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chore: initial public snapshot for github upload

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2026-03-26 20:06:14 +08:00
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237
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/antigravity/claude_types.go Normal file
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package antigravity
import "encoding/json"
// Claude 请求/响应类型定义
// ClaudeRequest Claude Messages API 请求
type ClaudeRequest struct {
Model string `json:"model"`
Messages []ClaudeMessage `json:"messages"`
MaxTokens int `json:"max_tokens,omitempty"`
System json.RawMessage `json:"system,omitempty"` // string 或 []SystemBlock
Stream bool `json:"stream,omitempty"`
Temperature *float64 `json:"temperature,omitempty"`
TopP *float64 `json:"top_p,omitempty"`
TopK *int `json:"top_k,omitempty"`
Tools []ClaudeTool `json:"tools,omitempty"`
Thinking *ThinkingConfig `json:"thinking,omitempty"`
Metadata *ClaudeMetadata `json:"metadata,omitempty"`
}
// ClaudeMessage Claude 消息
type ClaudeMessage struct {
Role string `json:"role"` // user, assistant
Content json.RawMessage `json:"content"`
}
// ThinkingConfig Thinking 配置
type ThinkingConfig struct {
Type string `json:"type"` // "enabled" / "adaptive" / "disabled"
BudgetTokens int `json:"budget_tokens,omitempty"` // thinking budget
}
// ClaudeMetadata 请求元数据
type ClaudeMetadata struct {
UserID string `json:"user_id,omitempty"`
}
// ClaudeTool Claude 工具定义
// 支持两种格式：
// 1. 标准格式: { "name": "...", "description": "...", "input_schema": {...} }
// 2. Custom 格式 (MCP): { "type": "custom", "name": "...", "custom": { "description": "...", "input_schema": {...} } }
type ClaudeTool struct {
Type string `json:"type,omitempty"` // "custom" 或空（标准格式）
Name string `json:"name"`
Description string `json:"description,omitempty"` // 标准格式使用
InputSchema map[string]any `json:"input_schema,omitempty"` // 标准格式使用
Custom *CustomToolSpec `json:"custom,omitempty"` // custom 格式使用
}
// CustomToolSpec MCP custom 工具规格
type CustomToolSpec struct {
Description string `json:"description,omitempty"`
InputSchema map[string]any `json:"input_schema"`
}
// ClaudeCustomToolSpec 兼容旧命名（MCP custom 工具规格）
type ClaudeCustomToolSpec = CustomToolSpec
// SystemBlock system prompt 数组形式的元素
type SystemBlock struct {
Type string `json:"type"`
Text string `json:"text"`
}
// ContentBlock Claude 消息内容块（解析后）
type ContentBlock struct {
Type string `json:"type"`
// text
Text string `json:"text,omitempty"`
// thinking
Thinking string `json:"thinking,omitempty"`
Signature string `json:"signature,omitempty"`
// tool_use
ID string `json:"id,omitempty"`
Name string `json:"name,omitempty"`
Input any `json:"input,omitempty"`
// tool_result
ToolUseID string `json:"tool_use_id,omitempty"`
Content json.RawMessage `json:"content,omitempty"`
IsError bool `json:"is_error,omitempty"`
// image
Source *ImageSource `json:"source,omitempty"`
}
// ImageSource Claude 图片来源
type ImageSource struct {
Type string `json:"type"` // "base64"
MediaType string `json:"media_type"` // "image/png", "image/jpeg" 等
Data string `json:"data"`
}
// ClaudeResponse Claude Messages API 响应
type ClaudeResponse struct {
ID string `json:"id"`
Type string `json:"type"` // "message"
Role string `json:"role"` // "assistant"
Model string `json:"model"`
Content []ClaudeContentItem `json:"content"`
StopReason string `json:"stop_reason,omitempty"` // end_turn, tool_use, max_tokens
StopSequence *string `json:"stop_sequence,omitempty"` // null 或具体值
Usage ClaudeUsage `json:"usage"`
}
// ClaudeContentItem Claude 响应内容项
type ClaudeContentItem struct {
Type string `json:"type"` // text, thinking, tool_use
// text
Text string `json:"text,omitempty"`
// thinking
Thinking string `json:"thinking,omitempty"`
Signature string `json:"signature,omitempty"`
// tool_use
ID string `json:"id,omitempty"`
Name string `json:"name,omitempty"`
Input any `json:"input,omitempty"`
}
// ClaudeUsage Claude 用量统计
type ClaudeUsage struct {
InputTokens int `json:"input_tokens"`
OutputTokens int `json:"output_tokens"`
CacheCreationInputTokens int `json:"cache_creation_input_tokens,omitempty"`
CacheReadInputTokens int `json:"cache_read_input_tokens,omitempty"`
}
// ClaudeError Claude 错误响应
type ClaudeError struct {
Type string `json:"type"` // "error"
Error ErrorDetail `json:"error"`
}
// ErrorDetail 错误详情
type ErrorDetail struct {
Type string `json:"type"`
Message string `json:"message"`
}
// modelDef Antigravity 模型定义（内部使用）
type modelDef struct {
ID string
DisplayName string
CreatedAt string // 仅 Claude API 格式使用
}
// Antigravity 支持的 Claude 模型
var claudeModels = []modelDef{
{ID: "claude-opus-4-5-thinking", DisplayName: "Claude Opus 4.5 Thinking", CreatedAt: "2025-11-01T00:00:00Z"},
{ID: "claude-sonnet-4-5", DisplayName: "Claude Sonnet 4.5", CreatedAt: "2025-09-29T00:00:00Z"},
{ID: "claude-sonnet-4-5-thinking", DisplayName: "Claude Sonnet 4.5 Thinking", CreatedAt: "2025-09-29T00:00:00Z"},
{ID: "claude-opus-4-6", DisplayName: "Claude Opus 4.6", CreatedAt: "2026-02-05T00:00:00Z"},
{ID: "claude-opus-4-6-thinking", DisplayName: "Claude Opus 4.6 Thinking", CreatedAt: "2026-02-05T00:00:00Z"},
{ID: "claude-sonnet-4-6", DisplayName: "Claude Sonnet 4.6", CreatedAt: "2026-02-17T00:00:00Z"},
}
// Antigravity 支持的 Gemini 模型
var geminiModels = []modelDef{
{ID: "gemini-2.5-flash", DisplayName: "Gemini 2.5 Flash", CreatedAt: "2025-01-01T00:00:00Z"},
{ID: "gemini-2.5-flash-image", DisplayName: "Gemini 2.5 Flash Image", CreatedAt: "2025-01-01T00:00:00Z"},
{ID: "gemini-2.5-flash-image-preview", DisplayName: "Gemini 2.5 Flash Image Preview", CreatedAt: "2025-01-01T00:00:00Z"},
{ID: "gemini-2.5-flash-lite", DisplayName: "Gemini 2.5 Flash Lite", CreatedAt: "2025-01-01T00:00:00Z"},
{ID: "gemini-2.5-flash-thinking", DisplayName: "Gemini 2.5 Flash Thinking", CreatedAt: "2025-01-01T00:00:00Z"},
{ID: "gemini-3-flash", DisplayName: "Gemini 3 Flash", CreatedAt: "2025-06-01T00:00:00Z"},
{ID: "gemini-3-pro-low", DisplayName: "Gemini 3 Pro Low", CreatedAt: "2025-06-01T00:00:00Z"},
{ID: "gemini-3-pro-high", DisplayName: "Gemini 3 Pro High", CreatedAt: "2025-06-01T00:00:00Z"},
{ID: "gemini-3.1-pro-low", DisplayName: "Gemini 3.1 Pro Low", CreatedAt: "2026-02-19T00:00:00Z"},
{ID: "gemini-3.1-pro-high", DisplayName: "Gemini 3.1 Pro High", CreatedAt: "2026-02-19T00:00:00Z"},
{ID: "gemini-3.1-flash-image", DisplayName: "Gemini 3.1 Flash Image", CreatedAt: "2026-02-19T00:00:00Z"},
{ID: "gemini-3.1-flash-image-preview", DisplayName: "Gemini 3.1 Flash Image Preview", CreatedAt: "2026-02-19T00:00:00Z"},
{ID: "gemini-3-pro-preview", DisplayName: "Gemini 3 Pro Preview", CreatedAt: "2025-06-01T00:00:00Z"},
{ID: "gemini-3-pro-image", DisplayName: "Gemini 3 Pro Image", CreatedAt: "2025-06-01T00:00:00Z"},
}
// ========== Claude API 格式 (/v1/models) ==========
// ClaudeModel Claude API 模型格式
type ClaudeModel struct {
ID string `json:"id"`
Type string `json:"type"`
DisplayName string `json:"display_name"`
CreatedAt string `json:"created_at"`
}
// DefaultModels 返回 Claude API 格式的模型列表（Claude + Gemini）
func DefaultModels() []ClaudeModel {
all := append(claudeModels, geminiModels...)
result := make([]ClaudeModel, len(all))
for i, m := range all {
result[i] = ClaudeModel{ID: m.ID, Type: "model", DisplayName: m.DisplayName, CreatedAt: m.CreatedAt}
}
return result
}
// ========== Gemini v1beta 格式 (/v1beta/models) ==========
// GeminiModel Gemini v1beta 模型格式
type GeminiModel struct {
Name string `json:"name"`
DisplayName string `json:"displayName,omitempty"`
SupportedGenerationMethods []string `json:"supportedGenerationMethods,omitempty"`
}
// GeminiModelsListResponse Gemini v1beta 模型列表响应
type GeminiModelsListResponse struct {
Models []GeminiModel `json:"models"`
}
var defaultGeminiMethods = []string{"generateContent", "streamGenerateContent"}
// DefaultGeminiModels 返回 Gemini v1beta 格式的模型列表（仅 Gemini 模型）
func DefaultGeminiModels() []GeminiModel {
result := make([]GeminiModel, len(geminiModels))
for i, m := range geminiModels {
result[i] = GeminiModel{Name: "models/" + m.ID, DisplayName: m.DisplayName, SupportedGenerationMethods: defaultGeminiMethods}
}
return result
}
// FallbackGeminiModelsList 返回 Gemini v1beta 格式的模型列表响应
func FallbackGeminiModelsList() GeminiModelsListResponse {
return GeminiModelsListResponse{Models: DefaultGeminiModels()}
}
// FallbackGeminiModel 返回单个模型信息（v1beta 格式）
func FallbackGeminiModel(model string) GeminiModel {
if model == "" {
return GeminiModel{Name: "models/unknown", SupportedGenerationMethods: defaultGeminiMethods}
}
name := model
if len(model) < 7 || model[:7] != "models/" {
name = "models/" + model
}
return GeminiModel{Name: name, SupportedGenerationMethods: defaultGeminiMethods}
}

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llm-gateway-competitors/sub2api-tar/backend/internal/pkg/antigravity/claude_types_test.go Normal file
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package antigravity
import "testing"
func TestDefaultModels_ContainsNewAndLegacyImageModels(t *testing.T) {
t.Parallel()
models := DefaultModels()
byID := make(map[string]ClaudeModel, len(models))
for _, m := range models {
byID[m.ID] = m
}
requiredIDs := []string{
"claude-opus-4-6-thinking",
"gemini-2.5-flash-image",
"gemini-2.5-flash-image-preview",
"gemini-3.1-flash-image",
"gemini-3.1-flash-image-preview",
"gemini-3-pro-image", // legacy compatibility
}
for _, id := range requiredIDs {
if _, ok := byID[id]; !ok {
t.Fatalf("expected model %q to be exposed in DefaultModels", id)
}
}
}

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llm-gateway-competitors/sub2api-tar/backend/internal/pkg/antigravity/client.go Normal file
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// Package antigravity provides a client for the Antigravity API.
package antigravity
import (
"bytes"
"context"
"encoding/json"
"errors"
"fmt"
"io"
"log"
"net"
"net/http"
"net/url"
"strings"
"time"
"github.com/Wei-Shaw/sub2api/internal/pkg/proxyurl"
"github.com/Wei-Shaw/sub2api/internal/pkg/proxyutil"
)
// ForbiddenError 表示上游返回 403 Forbidden
type ForbiddenError struct {
StatusCode int
Body string
}
func (e *ForbiddenError) Error() string {
return fmt.Sprintf("fetchAvailableModels 失败 (HTTP %d): %s", e.StatusCode, e.Body)
}
// NewAPIRequestWithURL 使用指定的 base URL 创建 Antigravity API 请求（v1internal 端点）
func NewAPIRequestWithURL(ctx context.Context, baseURL, action, accessToken string, body []byte) (*http.Request, error) {
// 构建 URL，流式请求添加 ?alt=sse 参数
apiURL := fmt.Sprintf("%s/v1internal:%s", baseURL, action)
isStream := action == "streamGenerateContent"
if isStream {
apiURL += "?alt=sse"
}
req, err := http.NewRequestWithContext(ctx, http.MethodPost, apiURL, bytes.NewReader(body))
if err != nil {
return nil, err
}
// 基础 Headers（与 Antigravity-Manager 保持一致，只设置这 3 个）
req.Header.Set("Content-Type", "application/json")
req.Header.Set("Authorization", "Bearer "+accessToken)
req.Header.Set("User-Agent", GetUserAgent())
return req, nil
}
// NewAPIRequest 使用默认 URL 创建 Antigravity API 请求（v1internal 端点）
// 向后兼容：仅使用默认 BaseURL
func NewAPIRequest(ctx context.Context, action, accessToken string, body []byte) (*http.Request, error) {
return NewAPIRequestWithURL(ctx, BaseURL, action, accessToken, body)
}
// TokenResponse Google OAuth token 响应
type TokenResponse struct {
AccessToken string `json:"access_token"`
ExpiresIn int64 `json:"expires_in"`
TokenType string `json:"token_type"`
Scope string `json:"scope,omitempty"`
RefreshToken string `json:"refresh_token,omitempty"`
}
// UserInfo Google 用户信息
type UserInfo struct {
Email string `json:"email"`
Name string `json:"name,omitempty"`
GivenName string `json:"given_name,omitempty"`
FamilyName string `json:"family_name,omitempty"`
Picture string `json:"picture,omitempty"`
}
// LoadCodeAssistRequest loadCodeAssist 请求
type LoadCodeAssistRequest struct {
Metadata struct {
IDEType string `json:"ideType"`
} `json:"metadata"`
}
// TierInfo 账户类型信息
type TierInfo struct {
ID string `json:"id"` // free-tier, g1-pro-tier, g1-ultra-tier
Name string `json:"name"` // 显示名称
Description string `json:"description"` // 描述
}
// UnmarshalJSON supports both legacy string tiers and object tiers.
func (t *TierInfo) UnmarshalJSON(data []byte) error {
data = bytes.TrimSpace(data)
if len(data) == 0 || string(data) == "null" {
return nil
}
if data[0] == '"' {
var id string
if err := json.Unmarshal(data, &id); err != nil {
return err
}
t.ID = id
return nil
}
type alias TierInfo
var decoded alias
if err := json.Unmarshal(data, &decoded); err != nil {
return err
}
*t = TierInfo(decoded)
return nil
}
// IneligibleTier 不符合条件的层级信息
type IneligibleTier struct {
Tier *TierInfo `json:"tier,omitempty"`
// ReasonCode 不符合条件的原因代码，如 INELIGIBLE_ACCOUNT
ReasonCode string `json:"reasonCode,omitempty"`
ReasonMessage string `json:"reasonMessage,omitempty"`
}
// LoadCodeAssistResponse loadCodeAssist 响应
type LoadCodeAssistResponse struct {
CloudAICompanionProject string `json:"cloudaicompanionProject"`
CurrentTier *TierInfo `json:"currentTier,omitempty"`
PaidTier *PaidTierInfo `json:"paidTier,omitempty"`
IneligibleTiers []*IneligibleTier `json:"ineligibleTiers,omitempty"`
}
// PaidTierInfo 付费等级信息，包含 AI Credits 余额。
type PaidTierInfo struct {
ID string `json:"id"`
Name string `json:"name"`
Description string `json:"description"`
AvailableCredits []AvailableCredit `json:"availableCredits,omitempty"`
}
// UnmarshalJSON 兼容 paidTier 既可能是字符串也可能是对象的情况。
func (p *PaidTierInfo) UnmarshalJSON(data []byte) error {
data = bytes.TrimSpace(data)
if len(data) == 0 || string(data) == "null" {
return nil
}
if data[0] == '"' {
var id string
if err := json.Unmarshal(data, &id); err != nil {
return err
}
p.ID = id
return nil
}
type alias PaidTierInfo
var raw alias
if err := json.Unmarshal(data, &raw); err != nil {
return err
}
*p = PaidTierInfo(raw)
return nil
}
// AvailableCredit 表示一条 AI Credits 余额记录。
type AvailableCredit struct {
CreditType string `json:"creditType,omitempty"`
CreditAmount string `json:"creditAmount,omitempty"`
MinimumCreditAmountForUsage string `json:"minimumCreditAmountForUsage,omitempty"`
}
// GetAmount 将 creditAmount 解析为浮点数。
func (c *AvailableCredit) GetAmount() float64 {
if c.CreditAmount == "" {
return 0
}
var value float64
_, _ = fmt.Sscanf(c.CreditAmount, "%f", &value)
return value
}
// GetMinimumAmount 将 minimumCreditAmountForUsage 解析为浮点数。
func (c *AvailableCredit) GetMinimumAmount() float64 {
if c.MinimumCreditAmountForUsage == "" {
return 0
}
var value float64
_, _ = fmt.Sscanf(c.MinimumCreditAmountForUsage, "%f", &value)
return value
}
// OnboardUserRequest onboardUser 请求
type OnboardUserRequest struct {
TierID string `json:"tierId"`
Metadata struct {
IDEType string `json:"ideType"`
Platform string `json:"platform,omitempty"`
PluginType string `json:"pluginType,omitempty"`
} `json:"metadata"`
}
// OnboardUserResponse onboardUser 响应
type OnboardUserResponse struct {
Name string `json:"name,omitempty"`
Done bool `json:"done"`
Response map[string]any `json:"response,omitempty"`
}
// GetTier 获取账户类型
// 优先返回 paidTier（付费订阅级别），否则返回 currentTier
func (r *LoadCodeAssistResponse) GetTier() string {
if r.PaidTier != nil && r.PaidTier.ID != "" {
return r.PaidTier.ID
}
if r.CurrentTier != nil {
return r.CurrentTier.ID
}
return ""
}
// GetAvailableCredits 返回 paid tier 中的 AI Credits 余额列表。
func (r *LoadCodeAssistResponse) GetAvailableCredits() []AvailableCredit {
if r.PaidTier == nil {
return nil
}
return r.PaidTier.AvailableCredits
}
// Client Antigravity API 客户端
type Client struct {
httpClient *http.Client
}
func NewClient(proxyURL string) (*Client, error) {
client := &http.Client{
Timeout: 30 * time.Second,
}
_, parsed, err := proxyurl.Parse(proxyURL)
if err != nil {
return nil, err
}
if parsed != nil {
transport := &http.Transport{}
if err := proxyutil.ConfigureTransportProxy(transport, parsed); err != nil {
return nil, fmt.Errorf("configure proxy: %w", err)
}
client.Transport = transport
}
return &Client{
httpClient: client,
}, nil
}
// isConnectionError 判断是否为连接错误（网络超时、DNS 失败、连接拒绝）
func isConnectionError(err error) bool {
if err == nil {
return false
}
// 检查超时错误
var netErr net.Error
if errors.As(err, &netErr) && netErr.Timeout() {
return true
}
// 检查连接错误（DNS 失败、连接拒绝）
var opErr *net.OpError
if errors.As(err, &opErr) {
return true
}
// 检查 URL 错误
var urlErr *url.Error
return errors.As(err, &urlErr)
}
// shouldFallbackToNextURL 判断是否应切换到下一个 URL
// 与 Antigravity-Manager 保持一致：连接错误、429、408、404、5xx 触发 URL 降级
func shouldFallbackToNextURL(err error, statusCode int) bool {
if isConnectionError(err) {
return true
}
return statusCode == http.StatusTooManyRequests ||
statusCode == http.StatusRequestTimeout ||
statusCode == http.StatusNotFound ||
statusCode >= 500
}
// ExchangeCode 用 authorization code 交换 token
func (c *Client) ExchangeCode(ctx context.Context, code, codeVerifier string) (*TokenResponse, error) {
clientSecret, err := getClientSecret()
if err != nil {
return nil, err
}
params := url.Values{}
params.Set("client_id", ClientID)
params.Set("client_secret", clientSecret)
params.Set("code", code)
params.Set("redirect_uri", RedirectURI)
params.Set("grant_type", "authorization_code")
params.Set("code_verifier", codeVerifier)
req, err := http.NewRequestWithContext(ctx, http.MethodPost, TokenURL, strings.NewReader(params.Encode()))
if err != nil {
return nil, fmt.Errorf("创建请求失败: %w", err)
}
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
resp, err := c.httpClient.Do(req)
if err != nil {
return nil, fmt.Errorf("token 交换请求失败: %w", err)
}
defer func() { _ = resp.Body.Close() }()
bodyBytes, err := io.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("读取响应失败: %w", err)
}
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("token 交换失败 (HTTP %d): %s", resp.StatusCode, string(bodyBytes))
}
var tokenResp TokenResponse
if err := json.Unmarshal(bodyBytes, &tokenResp); err != nil {
return nil, fmt.Errorf("token 解析失败: %w", err)
}
return &tokenResp, nil
}
// RefreshToken 刷新 access_token
func (c *Client) RefreshToken(ctx context.Context, refreshToken string) (*TokenResponse, error) {
clientSecret, err := getClientSecret()
if err != nil {
return nil, err
}
params := url.Values{}
params.Set("client_id", ClientID)
params.Set("client_secret", clientSecret)
params.Set("refresh_token", refreshToken)
params.Set("grant_type", "refresh_token")
req, err := http.NewRequestWithContext(ctx, http.MethodPost, TokenURL, strings.NewReader(params.Encode()))
if err != nil {
return nil, fmt.Errorf("创建请求失败: %w", err)
}
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
resp, err := c.httpClient.Do(req)
if err != nil {
return nil, fmt.Errorf("token 刷新请求失败: %w", err)
}
defer func() { _ = resp.Body.Close() }()
bodyBytes, err := io.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("读取响应失败: %w", err)
}
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("token 刷新失败 (HTTP %d): %s", resp.StatusCode, string(bodyBytes))
}
var tokenResp TokenResponse
if err := json.Unmarshal(bodyBytes, &tokenResp); err != nil {
return nil, fmt.Errorf("token 解析失败: %w", err)
}
return &tokenResp, nil
}
// GetUserInfo 获取用户信息
func (c *Client) GetUserInfo(ctx context.Context, accessToken string) (*UserInfo, error) {
req, err := http.NewRequestWithContext(ctx, http.MethodGet, UserInfoURL, nil)
if err != nil {
return nil, fmt.Errorf("创建请求失败: %w", err)
}
req.Header.Set("Authorization", "Bearer "+accessToken)
resp, err := c.httpClient.Do(req)
if err != nil {
return nil, fmt.Errorf("用户信息请求失败: %w", err)
}
defer func() { _ = resp.Body.Close() }()
bodyBytes, err := io.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("读取响应失败: %w", err)
}
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("获取用户信息失败 (HTTP %d): %s", resp.StatusCode, string(bodyBytes))
}
var userInfo UserInfo
if err := json.Unmarshal(bodyBytes, &userInfo); err != nil {
return nil, fmt.Errorf("用户信息解析失败: %w", err)
}
return &userInfo, nil
}
// LoadCodeAssist 获取账户信息，返回解析后的结构体和原始 JSON
// 支持 URL fallback：sandbox → daily → prod
func (c *Client) LoadCodeAssist(ctx context.Context, accessToken string) (*LoadCodeAssistResponse, map[string]any, error) {
reqBody := LoadCodeAssistRequest{}
reqBody.Metadata.IDEType = "ANTIGRAVITY"
bodyBytes, err := json.Marshal(reqBody)
if err != nil {
return nil, nil, fmt.Errorf("序列化请求失败: %w", err)
}
// 固定顺序：prod -> daily
availableURLs := BaseURLs
var lastErr error
for urlIdx, baseURL := range availableURLs {
apiURL := baseURL + "/v1internal:loadCodeAssist"
req, err := http.NewRequestWithContext(ctx, http.MethodPost, apiURL, strings.NewReader(string(bodyBytes)))
if err != nil {
lastErr = fmt.Errorf("创建请求失败: %w", err)
continue
}
req.Header.Set("Authorization", "Bearer "+accessToken)
req.Header.Set("Content-Type", "application/json")
req.Header.Set("User-Agent", GetUserAgent())
resp, err := c.httpClient.Do(req)
if err != nil {
lastErr = fmt.Errorf("loadCodeAssist 请求失败: %w", err)
if shouldFallbackToNextURL(err, 0) && urlIdx < len(availableURLs)-1 {
log.Printf("[antigravity] loadCodeAssist URL fallback: %s -> %s", baseURL, availableURLs[urlIdx+1])
continue
}
return nil, nil, lastErr
}
respBodyBytes, err := io.ReadAll(resp.Body)
_ = resp.Body.Close() // 立即关闭，避免循环内 defer 导致的资源泄漏
if err != nil {
return nil, nil, fmt.Errorf("读取响应失败: %w", err)
}
// 检查是否需要 URL 降级
if shouldFallbackToNextURL(nil, resp.StatusCode) && urlIdx < len(availableURLs)-1 {
log.Printf("[antigravity] loadCodeAssist URL fallback (HTTP %d): %s -> %s", resp.StatusCode, baseURL, availableURLs[urlIdx+1])
continue
}
if resp.StatusCode != http.StatusOK {
return nil, nil, fmt.Errorf("loadCodeAssist 失败 (HTTP %d): %s", resp.StatusCode, string(respBodyBytes))
}
var loadResp LoadCodeAssistResponse
if err := json.Unmarshal(respBodyBytes, &loadResp); err != nil {
return nil, nil, fmt.Errorf("响应解析失败: %w", err)
}
// 解析原始 JSON 为 map
var rawResp map[string]any
_ = json.Unmarshal(respBodyBytes, &rawResp)
// 标记成功的 URL，下次优先使用
DefaultURLAvailability.MarkSuccess(baseURL)
return &loadResp, rawResp, nil
}
return nil, nil, lastErr
}
// OnboardUser 触发账号 onboarding，并返回 project_id
// 说明：
// 1) 部分账号 loadCodeAssist 不会立即返回 cloudaicompanionProject；
// 2) 这时需要调用 onboardUser 完成初始化，之后才能拿到 project_id。
func (c *Client) OnboardUser(ctx context.Context, accessToken, tierID string) (string, error) {
tierID = strings.TrimSpace(tierID)
if tierID == "" {
return "", fmt.Errorf("tier_id 为空")
}
reqBody := OnboardUserRequest{TierID: tierID}
reqBody.Metadata.IDEType = "ANTIGRAVITY"
reqBody.Metadata.Platform = "PLATFORM_UNSPECIFIED"
reqBody.Metadata.PluginType = "GEMINI"
bodyBytes, err := json.Marshal(reqBody)
if err != nil {
return "", fmt.Errorf("序列化请求失败: %w", err)
}
availableURLs := BaseURLs
var lastErr error
for urlIdx, baseURL := range availableURLs {
apiURL := baseURL + "/v1internal:onboardUser"
for attempt := 1; attempt <= 5; attempt++ {
req, err := http.NewRequestWithContext(ctx, http.MethodPost, apiURL, bytes.NewReader(bodyBytes))
if err != nil {
lastErr = fmt.Errorf("创建请求失败: %w", err)
break
}
req.Header.Set("Authorization", "Bearer "+accessToken)
req.Header.Set("Content-Type", "application/json")
req.Header.Set("User-Agent", GetUserAgent())
resp, err := c.httpClient.Do(req)
if err != nil {
lastErr = fmt.Errorf("onboardUser 请求失败: %w", err)
if shouldFallbackToNextURL(err, 0) && urlIdx < len(availableURLs)-1 {
log.Printf("[antigravity] onboardUser URL fallback: %s -> %s", baseURL, availableURLs[urlIdx+1])
break
}
return "", lastErr
}
respBodyBytes, err := io.ReadAll(resp.Body)
_ = resp.Body.Close()
if err != nil {
return "", fmt.Errorf("读取响应失败: %w", err)
}
if shouldFallbackToNextURL(nil, resp.StatusCode) && urlIdx < len(availableURLs)-1 {
log.Printf("[antigravity] onboardUser URL fallback (HTTP %d): %s -> %s", resp.StatusCode, baseURL, availableURLs[urlIdx+1])
break
}
if resp.StatusCode != http.StatusOK {
lastErr = fmt.Errorf("onboardUser 失败 (HTTP %d): %s", resp.StatusCode, string(respBodyBytes))
return "", lastErr
}
var onboardResp OnboardUserResponse
if err := json.Unmarshal(respBodyBytes, &onboardResp); err != nil {
lastErr = fmt.Errorf("onboardUser 响应解析失败: %w", err)
return "", lastErr
}
if onboardResp.Done {
if projectID := extractProjectIDFromOnboardResponse(onboardResp.Response); projectID != "" {
DefaultURLAvailability.MarkSuccess(baseURL)
return projectID, nil
}
lastErr = fmt.Errorf("onboardUser 完成但未返回 project_id")
return "", lastErr
}
// done=false 时等待后重试（与 CLIProxyAPI 行为一致）
select {
case <-time.After(2 * time.Second):
case <-ctx.Done():
return "", ctx.Err()
}
}
}
if lastErr != nil {
return "", lastErr
}
return "", fmt.Errorf("onboardUser 未返回 project_id")
}
func extractProjectIDFromOnboardResponse(resp map[string]any) string {
if len(resp) == 0 {
return ""
}
if v, ok := resp["cloudaicompanionProject"]; ok {
switch project := v.(type) {
case string:
return strings.TrimSpace(project)
case map[string]any:
if id, ok := project["id"].(string); ok {
return strings.TrimSpace(id)
}
}
}
return ""
}
// ModelQuotaInfo 模型配额信息
type ModelQuotaInfo struct {
RemainingFraction float64 `json:"remainingFraction"`
ResetTime string `json:"resetTime,omitempty"`
}
// ModelInfo 模型信息
type ModelInfo struct {
QuotaInfo *ModelQuotaInfo `json:"quotaInfo,omitempty"`
DisplayName string `json:"displayName,omitempty"`
SupportsImages *bool `json:"supportsImages,omitempty"`
SupportsThinking *bool `json:"supportsThinking,omitempty"`
ThinkingBudget *int `json:"thinkingBudget,omitempty"`
Recommended *bool `json:"recommended,omitempty"`
MaxTokens *int `json:"maxTokens,omitempty"`
MaxOutputTokens *int `json:"maxOutputTokens,omitempty"`
SupportedMimeTypes map[string]bool `json:"supportedMimeTypes,omitempty"`
}
// DeprecatedModelInfo 废弃模型转发信息
type DeprecatedModelInfo struct {
NewModelID string `json:"newModelId"`
}
// FetchAvailableModelsRequest fetchAvailableModels 请求
type FetchAvailableModelsRequest struct {
Project string `json:"project"`
}
// FetchAvailableModelsResponse fetchAvailableModels 响应
type FetchAvailableModelsResponse struct {
Models map[string]ModelInfo `json:"models"`
DeprecatedModelIDs map[string]DeprecatedModelInfo `json:"deprecatedModelIds,omitempty"`
}
// FetchAvailableModels 获取可用模型和配额信息，返回解析后的结构体和原始 JSON
// 支持 URL fallback：sandbox → daily → prod
func (c *Client) FetchAvailableModels(ctx context.Context, accessToken, projectID string) (*FetchAvailableModelsResponse, map[string]any, error) {
reqBody := FetchAvailableModelsRequest{Project: projectID}
bodyBytes, err := json.Marshal(reqBody)
if err != nil {
return nil, nil, fmt.Errorf("序列化请求失败: %w", err)
}
// 固定顺序：prod -> daily
availableURLs := BaseURLs
var lastErr error
for urlIdx, baseURL := range availableURLs {
apiURL := baseURL + "/v1internal:fetchAvailableModels"
req, err := http.NewRequestWithContext(ctx, http.MethodPost, apiURL, strings.NewReader(string(bodyBytes)))
if err != nil {
lastErr = fmt.Errorf("创建请求失败: %w", err)
continue
}
req.Header.Set("Authorization", "Bearer "+accessToken)
req.Header.Set("Content-Type", "application/json")
req.Header.Set("User-Agent", GetUserAgent())
resp, err := c.httpClient.Do(req)
if err != nil {
lastErr = fmt.Errorf("fetchAvailableModels 请求失败: %w", err)
if shouldFallbackToNextURL(err, 0) && urlIdx < len(availableURLs)-1 {
log.Printf("[antigravity] fetchAvailableModels URL fallback: %s -> %s", baseURL, availableURLs[urlIdx+1])
continue
}
return nil, nil, lastErr
}
respBodyBytes, err := io.ReadAll(resp.Body)
_ = resp.Body.Close() // 立即关闭，避免循环内 defer 导致的资源泄漏
if err != nil {
return nil, nil, fmt.Errorf("读取响应失败: %w", err)
}
// 检查是否需要 URL 降级
if shouldFallbackToNextURL(nil, resp.StatusCode) && urlIdx < len(availableURLs)-1 {
log.Printf("[antigravity] fetchAvailableModels URL fallback (HTTP %d): %s -> %s", resp.StatusCode, baseURL, availableURLs[urlIdx+1])
continue
}
if resp.StatusCode == http.StatusForbidden {
return nil, nil, &ForbiddenError{
StatusCode: resp.StatusCode,
Body: string(respBodyBytes),
}
}
if resp.StatusCode != http.StatusOK {
return nil, nil, fmt.Errorf("fetchAvailableModels 失败 (HTTP %d): %s", resp.StatusCode, string(respBodyBytes))
}
var modelsResp FetchAvailableModelsResponse
if err := json.Unmarshal(respBodyBytes, &modelsResp); err != nil {
return nil, nil, fmt.Errorf("响应解析失败: %w", err)
}
// 解析原始 JSON 为 map
var rawResp map[string]any
_ = json.Unmarshal(respBodyBytes, &rawResp)
// 标记成功的 URL，下次优先使用
DefaultURLAvailability.MarkSuccess(baseURL)
return &modelsResp, rawResp, nil
}
return nil, nil, lastErr
}

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193
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/antigravity/gemini_types.go Normal file
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package antigravity
// Gemini v1internal 请求/响应类型定义
// V1InternalRequest v1internal 请求包装
type V1InternalRequest struct {
Project string `json:"project"`
RequestID string `json:"requestId"`
UserAgent string `json:"userAgent"`
RequestType string `json:"requestType,omitempty"`
Model string `json:"model"`
Request GeminiRequest `json:"request"`
}
// GeminiRequest Gemini 请求内容
type GeminiRequest struct {
Contents []GeminiContent `json:"contents"`
SystemInstruction *GeminiContent `json:"systemInstruction,omitempty"`
GenerationConfig *GeminiGenerationConfig `json:"generationConfig,omitempty"`
Tools []GeminiToolDeclaration `json:"tools,omitempty"`
ToolConfig *GeminiToolConfig `json:"toolConfig,omitempty"`
SafetySettings []GeminiSafetySetting `json:"safetySettings,omitempty"`
SessionID string `json:"sessionId,omitempty"`
}
// GeminiContent Gemini 内容
type GeminiContent struct {
Role string `json:"role"` // user, model
Parts []GeminiPart `json:"parts"`
}
// GeminiPart Gemini 内容部分
type GeminiPart struct {
Text string `json:"text,omitempty"`
Thought bool `json:"thought,omitempty"`
ThoughtSignature string `json:"thoughtSignature,omitempty"`
InlineData *GeminiInlineData `json:"inlineData,omitempty"`
FunctionCall *GeminiFunctionCall `json:"functionCall,omitempty"`
FunctionResponse *GeminiFunctionResponse `json:"functionResponse,omitempty"`
}
// GeminiInlineData Gemini 内联数据（图片等）
type GeminiInlineData struct {
MimeType string `json:"mimeType"`
Data string `json:"data"`
}
// GeminiFunctionCall Gemini 函数调用
type GeminiFunctionCall struct {
Name string `json:"name"`
Args any `json:"args,omitempty"`
ID string `json:"id,omitempty"`
}
// GeminiFunctionResponse Gemini 函数响应
type GeminiFunctionResponse struct {
Name string `json:"name"`
Response map[string]any `json:"response"`
ID string `json:"id,omitempty"`
}
// GeminiGenerationConfig Gemini 生成配置
type GeminiGenerationConfig struct {
MaxOutputTokens int `json:"maxOutputTokens,omitempty"`
Temperature *float64 `json:"temperature,omitempty"`
TopP *float64 `json:"topP,omitempty"`
TopK *int `json:"topK,omitempty"`
ThinkingConfig *GeminiThinkingConfig `json:"thinkingConfig,omitempty"`
StopSequences []string `json:"stopSequences,omitempty"`
ImageConfig *GeminiImageConfig `json:"imageConfig,omitempty"`
}
// GeminiImageConfig Gemini 图片生成配置（gemini-3-pro-image / gemini-3.1-flash-image 等图片模型支持）
type GeminiImageConfig struct {
AspectRatio string `json:"aspectRatio,omitempty"` // "1:1", "16:9", "9:16", "4:3", "3:4"
ImageSize string `json:"imageSize,omitempty"` // "1K", "2K", "4K"
}
// GeminiThinkingConfig Gemini thinking 配置
type GeminiThinkingConfig struct {
IncludeThoughts bool `json:"includeThoughts"`
ThinkingBudget int `json:"thinkingBudget,omitempty"`
}
// GeminiToolDeclaration Gemini 工具声明
type GeminiToolDeclaration struct {
FunctionDeclarations []GeminiFunctionDecl `json:"functionDeclarations,omitempty"`
GoogleSearch *GeminiGoogleSearch `json:"googleSearch,omitempty"`
}
// GeminiFunctionDecl Gemini 函数声明
type GeminiFunctionDecl struct {
Name string `json:"name"`
Description string `json:"description,omitempty"`
Parameters map[string]any `json:"parameters,omitempty"`
}
// GeminiGoogleSearch Gemini Google 搜索工具
type GeminiGoogleSearch struct {
EnhancedContent *GeminiEnhancedContent `json:"enhancedContent,omitempty"`
}
// GeminiEnhancedContent 增强内容配置
type GeminiEnhancedContent struct {
ImageSearch *GeminiImageSearch `json:"imageSearch,omitempty"`
}
// GeminiImageSearch 图片搜索配置
type GeminiImageSearch struct {
MaxResultCount int `json:"maxResultCount,omitempty"`
}
// GeminiToolConfig Gemini 工具配置
type GeminiToolConfig struct {
FunctionCallingConfig *GeminiFunctionCallingConfig `json:"functionCallingConfig,omitempty"`
}
// GeminiFunctionCallingConfig 函数调用配置
type GeminiFunctionCallingConfig struct {
Mode string `json:"mode,omitempty"` // VALIDATED, AUTO, NONE
}
// GeminiSafetySetting Gemini 安全设置
type GeminiSafetySetting struct {
Category string `json:"category"`
Threshold string `json:"threshold"`
}
// V1InternalResponse v1internal 响应包装
type V1InternalResponse struct {
Response GeminiResponse `json:"response"`
ResponseID string `json:"responseId,omitempty"`
ModelVersion string `json:"modelVersion,omitempty"`
}
// GeminiResponse Gemini 响应
type GeminiResponse struct {
Candidates []GeminiCandidate `json:"candidates,omitempty"`
UsageMetadata *GeminiUsageMetadata `json:"usageMetadata,omitempty"`
ResponseID string `json:"responseId,omitempty"`
ModelVersion string `json:"modelVersion,omitempty"`
}
// GeminiCandidate Gemini 候选响应
type GeminiCandidate struct {
Content *GeminiContent `json:"content,omitempty"`
FinishReason string `json:"finishReason,omitempty"`
Index int `json:"index,omitempty"`
GroundingMetadata *GeminiGroundingMetadata `json:"groundingMetadata,omitempty"`
}
// GeminiUsageMetadata Gemini 用量元数据
type GeminiUsageMetadata struct {
PromptTokenCount int `json:"promptTokenCount,omitempty"`
CandidatesTokenCount int `json:"candidatesTokenCount,omitempty"`
CachedContentTokenCount int `json:"cachedContentTokenCount,omitempty"`
TotalTokenCount int `json:"totalTokenCount,omitempty"`
ThoughtsTokenCount int `json:"thoughtsTokenCount,omitempty"` // thinking tokens（按输出价格计费）
}
// GeminiGroundingMetadata Gemini grounding 元数据（Web Search）
type GeminiGroundingMetadata struct {
WebSearchQueries []string `json:"webSearchQueries,omitempty"`
GroundingChunks []GeminiGroundingChunk `json:"groundingChunks,omitempty"`
}
// GeminiGroundingChunk Gemini grounding chunk
type GeminiGroundingChunk struct {
Web *GeminiGroundingWeb `json:"web,omitempty"`
}
// GeminiGroundingWeb Gemini grounding web 信息
type GeminiGroundingWeb struct {
Title string `json:"title,omitempty"`
URI string `json:"uri,omitempty"`
}
// DefaultSafetySettings 默认安全设置（关闭所有过滤）
var DefaultSafetySettings = []GeminiSafetySetting{
{Category: "HARM_CATEGORY_HARASSMENT", Threshold: "OFF"},
{Category: "HARM_CATEGORY_HATE_SPEECH", Threshold: "OFF"},
{Category: "HARM_CATEGORY_SEXUALLY_EXPLICIT", Threshold: "OFF"},
{Category: "HARM_CATEGORY_DANGEROUS_CONTENT", Threshold: "OFF"},
{Category: "HARM_CATEGORY_CIVIC_INTEGRITY", Threshold: "OFF"},
}
// DefaultStopSequences 默认停止序列
var DefaultStopSequences = []string{
"<|user|>",
"<|endoftext|>",
"<|end_of_turn|>",
"\n\nHuman:",
}

343
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/antigravity/oauth.go Normal file
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package antigravity
import (
"crypto/rand"
"crypto/sha256"
"encoding/base64"
"encoding/hex"
"fmt"
"net/http"
"net/url"
"os"
"strings"
"sync"
"time"
infraerrors "github.com/Wei-Shaw/sub2api/internal/pkg/errors"
)
const (
// Google OAuth 端点
AuthorizeURL = "https://accounts.google.com/o/oauth2/v2/auth"
TokenURL = "https://oauth2.googleapis.com/token"
UserInfoURL = "https://www.googleapis.com/oauth2/v2/userinfo"
// Antigravity OAuth 客户端 ID（示例值，生产请通过配置注入）
ClientID = "replace-with-your-google-client-id"
// AntigravityOAuthClientSecretEnv 是 Antigravity OAuth client_secret 的环境变量名。
AntigravityOAuthClientSecretEnv = "ANTIGRAVITY_OAUTH_CLIENT_SECRET"
// 固定的 redirect_uri（用户需手动复制 code）
RedirectURI = "http://localhost:8085/callback"
// OAuth scopes
Scopes = "https://www.googleapis.com/auth/cloud-platform " +
"https://www.googleapis.com/auth/userinfo.email " +
"https://www.googleapis.com/auth/userinfo.profile " +
"https://www.googleapis.com/auth/cclog " +
"https://www.googleapis.com/auth/experimentsandconfigs"
// Session 过期时间
SessionTTL = 30 * time.Minute
// URL 可用性 TTL（不可用 URL 的恢复时间）
URLAvailabilityTTL = 5 * time.Minute
// Antigravity API 端点
antigravityProdBaseURL = "https://cloudcode-pa.googleapis.com"
antigravityDailyBaseURL = "https://daily-cloudcode-pa.sandbox.googleapis.com"
)
// defaultUserAgentVersion 可通过环境变量 ANTIGRAVITY_USER_AGENT_VERSION 配置，默认 1.20.4
var defaultUserAgentVersion = "1.20.4"
// defaultClientSecret 可通过环境变量 ANTIGRAVITY_OAUTH_CLIENT_SECRET 配置
var defaultClientSecret = "replace-with-your-google-client-secret"
func init() {
// 从环境变量读取版本号，未设置则使用默认值
if version := os.Getenv("ANTIGRAVITY_USER_AGENT_VERSION"); version != "" {
defaultUserAgentVersion = version
}
// 从环境变量读取 client_secret，未设置则使用默认值
if secret := os.Getenv(AntigravityOAuthClientSecretEnv); secret != "" {
defaultClientSecret = secret
}
}
// GetUserAgent 返回当前配置的 User-Agent
func GetUserAgent() string {
return fmt.Sprintf("antigravity/%s windows/amd64", defaultUserAgentVersion)
}
func getClientSecret() (string, error) {
if v := strings.TrimSpace(defaultClientSecret); v != "" {
return v, nil
}
return "", infraerrors.Newf(http.StatusBadRequest, "ANTIGRAVITY_OAUTH_CLIENT_SECRET_MISSING", "missing antigravity oauth client_secret; set %s", AntigravityOAuthClientSecretEnv)
}
// BaseURLs 定义 Antigravity API 端点（与 Antigravity-Manager 保持一致）
var BaseURLs = []string{
antigravityProdBaseURL, // prod (优先)
antigravityDailyBaseURL, // daily sandbox (备用)
}
// BaseURL 默认 URL（保持向后兼容）
var BaseURL = BaseURLs[0]
// ForwardBaseURLs 返回 API 转发用的 URL 顺序（daily 优先）
func ForwardBaseURLs() []string {
if len(BaseURLs) == 0 {
return nil
}
urls := append([]string(nil), BaseURLs...)
dailyIndex := -1
for i, url := range urls {
if url == antigravityDailyBaseURL {
dailyIndex = i
break
}
}
if dailyIndex <= 0 {
return urls
}
reordered := make([]string, 0, len(urls))
reordered = append(reordered, urls[dailyIndex])
for i, url := range urls {
if i == dailyIndex {
continue
}
reordered = append(reordered, url)
}
return reordered
}
// URLAvailability 管理 URL 可用性状态（带 TTL 自动恢复和动态优先级）
type URLAvailability struct {
mu sync.RWMutex
unavailable map[string]time.Time // URL -> 恢复时间
ttl time.Duration
lastSuccess string // 最近成功请求的 URL，优先使用
}
// DefaultURLAvailability 全局 URL 可用性管理器
var DefaultURLAvailability = NewURLAvailability(URLAvailabilityTTL)
// NewURLAvailability 创建 URL 可用性管理器
func NewURLAvailability(ttl time.Duration) *URLAvailability {
return &URLAvailability{
unavailable: make(map[string]time.Time),
ttl: ttl,
}
}
// MarkUnavailable 标记 URL 临时不可用
func (u *URLAvailability) MarkUnavailable(url string) {
u.mu.Lock()
defer u.mu.Unlock()
u.unavailable[url] = time.Now().Add(u.ttl)
}
// MarkSuccess 标记 URL 请求成功，将其设为优先使用
func (u *URLAvailability) MarkSuccess(url string) {
u.mu.Lock()
defer u.mu.Unlock()
u.lastSuccess = url
// 成功后清除该 URL 的不可用标记
delete(u.unavailable, url)
}
// IsAvailable 检查 URL 是否可用
func (u *URLAvailability) IsAvailable(url string) bool {
u.mu.RLock()
defer u.mu.RUnlock()
expiry, exists := u.unavailable[url]
if !exists {
return true
}
return time.Now().After(expiry)
}
// GetAvailableURLs 返回可用的 URL 列表
// 最近成功的 URL 优先，其他按默认顺序
func (u *URLAvailability) GetAvailableURLs() []string {
return u.GetAvailableURLsWithBase(BaseURLs)
}
// GetAvailableURLsWithBase 返回可用的 URL 列表（使用自定义顺序）
// 最近成功的 URL 优先，其他按传入顺序
func (u *URLAvailability) GetAvailableURLsWithBase(baseURLs []string) []string {
u.mu.RLock()
defer u.mu.RUnlock()
now := time.Now()
result := make([]string, 0, len(baseURLs))
// 如果有最近成功的 URL 且可用，放在最前面
if u.lastSuccess != "" {
found := false
for _, url := range baseURLs {
if url == u.lastSuccess {
found = true
break
}
}
if found {
expiry, exists := u.unavailable[u.lastSuccess]
if !exists || now.After(expiry) {
result = append(result, u.lastSuccess)
}
}
}
// 添加其他可用的 URL（按传入顺序）
for _, url := range baseURLs {
// 跳过已添加的 lastSuccess
if url == u.lastSuccess {
continue
}
expiry, exists := u.unavailable[url]
if !exists || now.After(expiry) {
result = append(result, url)
}
}
return result
}
// OAuthSession 保存 OAuth 授权流程的临时状态
type OAuthSession struct {
State string `json:"state"`
CodeVerifier string `json:"code_verifier"`
ProxyURL string `json:"proxy_url,omitempty"`
CreatedAt time.Time `json:"created_at"`
}
// SessionStore OAuth session 存储
type SessionStore struct {
mu sync.RWMutex
sessions map[string]*OAuthSession
stopCh chan struct{}
}
func NewSessionStore() *SessionStore {
store := &SessionStore{
sessions: make(map[string]*OAuthSession),
stopCh: make(chan struct{}),
}
go store.cleanup()
return store
}
func (s *SessionStore) Set(sessionID string, session *OAuthSession) {
s.mu.Lock()
defer s.mu.Unlock()
s.sessions[sessionID] = session
}
func (s *SessionStore) Get(sessionID string) (*OAuthSession, bool) {
s.mu.RLock()
defer s.mu.RUnlock()
session, ok := s.sessions[sessionID]
if !ok {
return nil, false
}
if time.Since(session.CreatedAt) > SessionTTL {
return nil, false
}
return session, true
}
func (s *SessionStore) Delete(sessionID string) {
s.mu.Lock()
defer s.mu.Unlock()
delete(s.sessions, sessionID)
}
func (s *SessionStore) Stop() {
select {
case <-s.stopCh:
return
default:
close(s.stopCh)
}
}
func (s *SessionStore) cleanup() {
ticker := time.NewTicker(5 * time.Minute)
defer ticker.Stop()
for {
select {
case <-s.stopCh:
return
case <-ticker.C:
s.mu.Lock()
for id, session := range s.sessions {
if time.Since(session.CreatedAt) > SessionTTL {
delete(s.sessions, id)
}
}
s.mu.Unlock()
}
}
}
func GenerateRandomBytes(n int) ([]byte, error) {
b := make([]byte, n)
_, err := rand.Read(b)
if err != nil {
return nil, err
}
return b, nil
}
func GenerateState() (string, error) {
bytes, err := GenerateRandomBytes(32)
if err != nil {
return "", err
}
return base64URLEncode(bytes), nil
}
func GenerateSessionID() (string, error) {
bytes, err := GenerateRandomBytes(16)
if err != nil {
return "", err
}
return hex.EncodeToString(bytes), nil
}
func GenerateCodeVerifier() (string, error) {
bytes, err := GenerateRandomBytes(32)
if err != nil {
return "", err
}
return base64URLEncode(bytes), nil
}
func GenerateCodeChallenge(verifier string) string {
hash := sha256.Sum256([]byte(verifier))
return base64URLEncode(hash[:])
}
func base64URLEncode(data []byte) string {
return strings.TrimRight(base64.URLEncoding.EncodeToString(data), "=")
}
// BuildAuthorizationURL 构建 Google OAuth 授权 URL
func BuildAuthorizationURL(state, codeChallenge string) string {
params := url.Values{}
params.Set("client_id", ClientID)
params.Set("redirect_uri", RedirectURI)
params.Set("response_type", "code")
params.Set("scope", Scopes)
params.Set("state", state)
params.Set("code_challenge", codeChallenge)
params.Set("code_challenge_method", "S256")
params.Set("access_type", "offline")
params.Set("prompt", "consent")
params.Set("include_granted_scopes", "true")
return fmt.Sprintf("%s?%s", AuthorizeURL, params.Encode())
}

718
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/antigravity/oauth_test.go Normal file
View File

@@ -0,0 +1,718 @@
//go:build unit
package antigravity
import (
"crypto/sha256"
"encoding/base64"
"encoding/hex"
"net/url"
"os"
"strings"
"testing"
"time"
)
// ---------------------------------------------------------------------------
// getClientSecret
// ---------------------------------------------------------------------------
func TestGetClientSecret_环境变量设置(t *testing.T) {
old := defaultClientSecret
defaultClientSecret = ""
t.Cleanup(func() { defaultClientSecret = old })
t.Setenv(AntigravityOAuthClientSecretEnv, "my-secret-value")
// 需要重新触发 init 逻辑：手动从环境变量读取
defaultClientSecret = os.Getenv(AntigravityOAuthClientSecretEnv)
secret, err := getClientSecret()
if err != nil {
t.Fatalf("获取 client_secret 失败: %v", err)
}
if secret != "my-secret-value" {
t.Errorf("client_secret 不匹配: got %s, want my-secret-value", secret)
}
}
func TestGetClientSecret_环境变量为空(t *testing.T) {
old := defaultClientSecret
defaultClientSecret = ""
t.Cleanup(func() { defaultClientSecret = old })
_, err := getClientSecret()
if err == nil {
t.Fatal("defaultClientSecret 为空时应返回错误")
}
if !strings.Contains(err.Error(), AntigravityOAuthClientSecretEnv) {
t.Errorf("错误信息应包含环境变量名: got %s", err.Error())
}
}
func TestGetClientSecret_环境变量未设置(t *testing.T) {
old := defaultClientSecret
defaultClientSecret = ""
t.Cleanup(func() { defaultClientSecret = old })
_, err := getClientSecret()
if err == nil {
t.Fatal("defaultClientSecret 为空时应返回错误")
}
}
func TestGetClientSecret_环境变量含空格(t *testing.T) {
old := defaultClientSecret
defaultClientSecret = " "
t.Cleanup(func() { defaultClientSecret = old })
_, err := getClientSecret()
if err == nil {
t.Fatal("defaultClientSecret 仅含空格时应返回错误")
}
}
func TestGetClientSecret_环境变量有前后空格(t *testing.T) {
old := defaultClientSecret
defaultClientSecret = " valid-secret "
t.Cleanup(func() { defaultClientSecret = old })
secret, err := getClientSecret()
if err != nil {
t.Fatalf("获取 client_secret 失败: %v", err)
}
if secret != "valid-secret" {
t.Errorf("应去除前后空格: got %q, want %q", secret, "valid-secret")
}
}
// ---------------------------------------------------------------------------
// ForwardBaseURLs
// ---------------------------------------------------------------------------
func TestForwardBaseURLs_Daily优先(t *testing.T) {
urls := ForwardBaseURLs()
if len(urls) == 0 {
t.Fatal("ForwardBaseURLs 返回空列表")
}
// daily URL 应排在第一位
if urls[0] != antigravityDailyBaseURL {
t.Errorf("第一个 URL 应为 daily: got %s, want %s", urls[0], antigravityDailyBaseURL)
}
// 应包含所有 URL
if len(urls) != len(BaseURLs) {
t.Errorf("URL 数量不匹配: got %d, want %d", len(urls), len(BaseURLs))
}
// 验证 prod URL 也在列表中
found := false
for _, u := range urls {
if u == antigravityProdBaseURL {
found = true
break
}
}
if !found {
t.Error("ForwardBaseURLs 中缺少 prod URL")
}
}
func TestForwardBaseURLs_不修改原切片(t *testing.T) {
originalFirst := BaseURLs[0]
_ = ForwardBaseURLs()
// 确保原始 BaseURLs 未被修改
if BaseURLs[0] != originalFirst {
t.Errorf("ForwardBaseURLs 不应修改原始 BaseURLs: got %s, want %s", BaseURLs[0], originalFirst)
}
}
// ---------------------------------------------------------------------------
// URLAvailability
// ---------------------------------------------------------------------------
func TestNewURLAvailability(t *testing.T) {
ua := NewURLAvailability(5 * time.Minute)
if ua == nil {
t.Fatal("NewURLAvailability 返回 nil")
}
if ua.ttl != 5*time.Minute {
t.Errorf("TTL 不匹配: got %v, want 5m", ua.ttl)
}
if ua.unavailable == nil {
t.Error("unavailable map 不应为 nil")
}
}
func TestURLAvailability_MarkUnavailable(t *testing.T) {
ua := NewURLAvailability(5 * time.Minute)
testURL := "https://example.com"
ua.MarkUnavailable(testURL)
if ua.IsAvailable(testURL) {
t.Error("标记为不可用后 IsAvailable 应返回 false")
}
}
func TestURLAvailability_MarkSuccess(t *testing.T) {
ua := NewURLAvailability(5 * time.Minute)
testURL := "https://example.com"
// 先标记为不可用
ua.MarkUnavailable(testURL)
if ua.IsAvailable(testURL) {
t.Error("标记为不可用后应不可用")
}
// 标记成功后应恢复可用
ua.MarkSuccess(testURL)
if !ua.IsAvailable(testURL) {
t.Error("MarkSuccess 后应恢复可用")
}
// 验证 lastSuccess 被设置
ua.mu.RLock()
if ua.lastSuccess != testURL {
t.Errorf("lastSuccess 不匹配: got %s, want %s", ua.lastSuccess, testURL)
}
ua.mu.RUnlock()
}
func TestURLAvailability_IsAvailable_TTL过期(t *testing.T) {
// 使用极短的 TTL
ua := NewURLAvailability(1 * time.Millisecond)
testURL := "https://example.com"
ua.MarkUnavailable(testURL)
// 等待 TTL 过期
time.Sleep(5 * time.Millisecond)
if !ua.IsAvailable(testURL) {
t.Error("TTL 过期后 URL 应恢复可用")
}
}
func TestURLAvailability_IsAvailable_未标记的URL(t *testing.T) {
ua := NewURLAvailability(5 * time.Minute)
if !ua.IsAvailable("https://never-marked.com") {
t.Error("未标记的 URL 应默认可用")
}
}
func TestURLAvailability_GetAvailableURLs(t *testing.T) {
ua := NewURLAvailability(10 * time.Minute)
// 默认所有 URL 都可用
urls := ua.GetAvailableURLs()
if len(urls) != len(BaseURLs) {
t.Errorf("可用 URL 数量不匹配: got %d, want %d", len(urls), len(BaseURLs))
}
}
func TestURLAvailability_GetAvailableURLs_标记一个不可用(t *testing.T) {
ua := NewURLAvailability(10 * time.Minute)
if len(BaseURLs) < 2 {
t.Skip("BaseURLs 少于 2 个，跳过此测试")
}
ua.MarkUnavailable(BaseURLs[0])
urls := ua.GetAvailableURLs()
// 标记的 URL 不应出现在可用列表中
for _, u := range urls {
if u == BaseURLs[0] {
t.Errorf("被标记不可用的 URL 不应出现在可用列表中: %s", BaseURLs[0])
}
}
}
func TestURLAvailability_GetAvailableURLsWithBase(t *testing.T) {
ua := NewURLAvailability(10 * time.Minute)
customURLs := []string{"https://a.com", "https://b.com", "https://c.com"}
urls := ua.GetAvailableURLsWithBase(customURLs)
if len(urls) != 3 {
t.Errorf("可用 URL 数量不匹配: got %d, want 3", len(urls))
}
}
func TestURLAvailability_GetAvailableURLsWithBase_LastSuccess优先(t *testing.T) {
ua := NewURLAvailability(10 * time.Minute)
customURLs := []string{"https://a.com", "https://b.com", "https://c.com"}
ua.MarkSuccess("https://c.com")
urls := ua.GetAvailableURLsWithBase(customURLs)
if len(urls) != 3 {
t.Fatalf("可用 URL 数量不匹配: got %d, want 3", len(urls))
}
// c.com 应排在第一位
if urls[0] != "https://c.com" {
t.Errorf("lastSuccess 应排在第一位: got %s, want https://c.com", urls[0])
}
// 其余按原始顺序
if urls[1] != "https://a.com" {
t.Errorf("第二个应为 a.com: got %s", urls[1])
}
if urls[2] != "https://b.com" {
t.Errorf("第三个应为 b.com: got %s", urls[2])
}
}
func TestURLAvailability_GetAvailableURLsWithBase_LastSuccess不可用(t *testing.T) {
ua := NewURLAvailability(10 * time.Minute)
customURLs := []string{"https://a.com", "https://b.com"}
ua.MarkSuccess("https://b.com")
ua.MarkUnavailable("https://b.com")
urls := ua.GetAvailableURLsWithBase(customURLs)
// b.com 被标记不可用，不应出现
if len(urls) != 1 {
t.Fatalf("可用 URL 数量不匹配: got %d, want 1", len(urls))
}
if urls[0] != "https://a.com" {
t.Errorf("仅 a.com 应可用: got %s", urls[0])
}
}
func TestURLAvailability_GetAvailableURLsWithBase_LastSuccess不在列表中(t *testing.T) {
ua := NewURLAvailability(10 * time.Minute)
customURLs := []string{"https://a.com", "https://b.com"}
ua.MarkSuccess("https://not-in-list.com")
urls := ua.GetAvailableURLsWithBase(customURLs)
// lastSuccess 不在自定义列表中，不应被添加
if len(urls) != 2 {
t.Fatalf("可用 URL 数量不匹配: got %d, want 2", len(urls))
}
}
// ---------------------------------------------------------------------------
// SessionStore
// ---------------------------------------------------------------------------
func TestNewSessionStore(t *testing.T) {
store := NewSessionStore()
defer store.Stop()
if store == nil {
t.Fatal("NewSessionStore 返回 nil")
}
if store.sessions == nil {
t.Error("sessions map 不应为 nil")
}
}
func TestSessionStore_SetAndGet(t *testing.T) {
store := NewSessionStore()
defer store.Stop()
session := &OAuthSession{
State: "test-state",
CodeVerifier: "test-verifier",
ProxyURL: "http://proxy.example.com",
CreatedAt: time.Now(),
}
store.Set("session-1", session)
got, ok := store.Get("session-1")
if !ok {
t.Fatal("Get 应返回 true")
}
if got.State != "test-state" {
t.Errorf("State 不匹配: got %s", got.State)
}
if got.CodeVerifier != "test-verifier" {
t.Errorf("CodeVerifier 不匹配: got %s", got.CodeVerifier)
}
if got.ProxyURL != "http://proxy.example.com" {
t.Errorf("ProxyURL 不匹配: got %s", got.ProxyURL)
}
}
func TestSessionStore_Get_不存在(t *testing.T) {
store := NewSessionStore()
defer store.Stop()
_, ok := store.Get("nonexistent")
if ok {
t.Error("不存在的 session 应返回 false")
}
}
func TestSessionStore_Get_过期(t *testing.T) {
store := NewSessionStore()
defer store.Stop()
session := &OAuthSession{
State: "expired-state",
CreatedAt: time.Now().Add(-SessionTTL - time.Minute), // 已过期
}
store.Set("expired-session", session)
_, ok := store.Get("expired-session")
if ok {
t.Error("过期的 session 应返回 false")
}
}
func TestSessionStore_Delete(t *testing.T) {
store := NewSessionStore()
defer store.Stop()
session := &OAuthSession{
State: "to-delete",
CreatedAt: time.Now(),
}
store.Set("del-session", session)
store.Delete("del-session")
_, ok := store.Get("del-session")
if ok {
t.Error("删除后 Get 应返回 false")
}
}
func TestSessionStore_Delete_不存在(t *testing.T) {
store := NewSessionStore()
defer store.Stop()
// 删除不存在的 session 不应 panic
store.Delete("nonexistent")
}
func TestSessionStore_Stop(t *testing.T) {
store := NewSessionStore()
store.Stop()
// 多次 Stop 不应 panic
store.Stop()
}
func TestSessionStore_多个Session(t *testing.T) {
store := NewSessionStore()
defer store.Stop()
for i := 0; i < 10; i++ {
session := &OAuthSession{
State: "state-" + string(rune('0'+i)),
CreatedAt: time.Now(),
}
store.Set("session-"+string(rune('0'+i)), session)
}
// 验证都能取到
for i := 0; i < 10; i++ {
_, ok := store.Get("session-" + string(rune('0'+i)))
if !ok {
t.Errorf("session-%d 应存在", i)
}
}
}
// ---------------------------------------------------------------------------
// GenerateRandomBytes
// ---------------------------------------------------------------------------
func TestGenerateRandomBytes_长度正确(t *testing.T) {
sizes := []int{0, 1, 16, 32, 64, 128}
for _, size := range sizes {
b, err := GenerateRandomBytes(size)
if err != nil {
t.Fatalf("GenerateRandomBytes(%d) 失败: %v", size, err)
}
if len(b) != size {
t.Errorf("长度不匹配: got %d, want %d", len(b), size)
}
}
}
func TestGenerateRandomBytes_不同调用产生不同结果(t *testing.T) {
b1, err := GenerateRandomBytes(32)
if err != nil {
t.Fatalf("第一次调用失败: %v", err)
}
b2, err := GenerateRandomBytes(32)
if err != nil {
t.Fatalf("第二次调用失败: %v", err)
}
// 两次生成的随机字节应该不同（概率上几乎不可能相同）
if string(b1) == string(b2) {
t.Error("两次生成的随机字节相同，概率极低，可能有问题")
}
}
// ---------------------------------------------------------------------------
// GenerateState
// ---------------------------------------------------------------------------
func TestGenerateState_返回值格式(t *testing.T) {
state, err := GenerateState()
if err != nil {
t.Fatalf("GenerateState 失败: %v", err)
}
if state == "" {
t.Error("GenerateState 返回空字符串")
}
// base64url 编码不应包含 +, /, =
if strings.ContainsAny(state, "+/=") {
t.Errorf("GenerateState 返回值包含非 base64url 字符: %s", state)
}
// 32 字节的 base64url 编码长度应为 43（去掉了尾部 = 填充）
if len(state) != 43 {
t.Errorf("GenerateState 返回值长度不匹配: got %d, want 43", len(state))
}
}
func TestGenerateState_唯一性(t *testing.T) {
s1, _ := GenerateState()
s2, _ := GenerateState()
if s1 == s2 {
t.Error("两次 GenerateState 结果相同")
}
}
// ---------------------------------------------------------------------------
// GenerateSessionID
// ---------------------------------------------------------------------------
func TestGenerateSessionID_返回值格式(t *testing.T) {
id, err := GenerateSessionID()
if err != nil {
t.Fatalf("GenerateSessionID 失败: %v", err)
}
if id == "" {
t.Error("GenerateSessionID 返回空字符串")
}
// 16 字节的 hex 编码长度应为 32
if len(id) != 32 {
t.Errorf("GenerateSessionID 返回值长度不匹配: got %d, want 32", len(id))
}
// 验证是合法的 hex 字符串
if _, err := hex.DecodeString(id); err != nil {
t.Errorf("GenerateSessionID 返回值不是合法的 hex 字符串: %s, err: %v", id, err)
}
}
func TestGenerateSessionID_唯一性(t *testing.T) {
id1, _ := GenerateSessionID()
id2, _ := GenerateSessionID()
if id1 == id2 {
t.Error("两次 GenerateSessionID 结果相同")
}
}
// ---------------------------------------------------------------------------
// GenerateCodeVerifier
// ---------------------------------------------------------------------------
func TestGenerateCodeVerifier_返回值格式(t *testing.T) {
verifier, err := GenerateCodeVerifier()
if err != nil {
t.Fatalf("GenerateCodeVerifier 失败: %v", err)
}
if verifier == "" {
t.Error("GenerateCodeVerifier 返回空字符串")
}
// base64url 编码不应包含 +, /, =
if strings.ContainsAny(verifier, "+/=") {
t.Errorf("GenerateCodeVerifier 返回值包含非 base64url 字符: %s", verifier)
}
// 32 字节的 base64url 编码长度应为 43
if len(verifier) != 43 {
t.Errorf("GenerateCodeVerifier 返回值长度不匹配: got %d, want 43", len(verifier))
}
}
func TestGenerateCodeVerifier_唯一性(t *testing.T) {
v1, _ := GenerateCodeVerifier()
v2, _ := GenerateCodeVerifier()
if v1 == v2 {
t.Error("两次 GenerateCodeVerifier 结果相同")
}
}
// ---------------------------------------------------------------------------
// GenerateCodeChallenge
// ---------------------------------------------------------------------------
func TestGenerateCodeChallenge_SHA256_Base64URL(t *testing.T) {
verifier := "dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk"
challenge := GenerateCodeChallenge(verifier)
// 手动计算预期值
hash := sha256.Sum256([]byte(verifier))
expected := strings.TrimRight(base64.URLEncoding.EncodeToString(hash[:]), "=")
if challenge != expected {
t.Errorf("CodeChallenge 不匹配: got %s, want %s", challenge, expected)
}
}
func TestGenerateCodeChallenge_不含填充字符(t *testing.T) {
challenge := GenerateCodeChallenge("test-verifier")
if strings.Contains(challenge, "=") {
t.Errorf("CodeChallenge 不应包含 = 填充字符: %s", challenge)
}
}
func TestGenerateCodeChallenge_不含非URL安全字符(t *testing.T) {
challenge := GenerateCodeChallenge("another-verifier")
if strings.ContainsAny(challenge, "+/") {
t.Errorf("CodeChallenge 不应包含 + 或 / 字符: %s", challenge)
}
}
func TestGenerateCodeChallenge_相同输入相同输出(t *testing.T) {
c1 := GenerateCodeChallenge("same-verifier")
c2 := GenerateCodeChallenge("same-verifier")
if c1 != c2 {
t.Errorf("相同输入应产生相同输出: got %s and %s", c1, c2)
}
}
func TestGenerateCodeChallenge_不同输入不同输出(t *testing.T) {
c1 := GenerateCodeChallenge("verifier-1")
c2 := GenerateCodeChallenge("verifier-2")
if c1 == c2 {
t.Error("不同输入应产生不同输出")
}
}
// ---------------------------------------------------------------------------
// BuildAuthorizationURL
// ---------------------------------------------------------------------------
func TestBuildAuthorizationURL_参数验证(t *testing.T) {
state := "test-state-123"
codeChallenge := "test-challenge-abc"
authURL := BuildAuthorizationURL(state, codeChallenge)
// 验证以 AuthorizeURL 开头
if !strings.HasPrefix(authURL, AuthorizeURL+"?") {
t.Errorf("URL 应以 %s? 开头: got %s", AuthorizeURL, authURL)
}
// 解析 URL 并验证参数
parsed, err := url.Parse(authURL)
if err != nil {
t.Fatalf("解析 URL 失败: %v", err)
}
params := parsed.Query()
expectedParams := map[string]string{
"client_id": ClientID,
"redirect_uri": RedirectURI,
"response_type": "code",
"scope": Scopes,
"state": state,
"code_challenge": codeChallenge,
"code_challenge_method": "S256",
"access_type": "offline",
"prompt": "consent",
"include_granted_scopes": "true",
}
for key, want := range expectedParams {
got := params.Get(key)
if got != want {
t.Errorf("参数 %s 不匹配: got %q, want %q", key, got, want)
}
}
}
func TestBuildAuthorizationURL_参数数量(t *testing.T) {
authURL := BuildAuthorizationURL("s", "c")
parsed, err := url.Parse(authURL)
if err != nil {
t.Fatalf("解析 URL 失败: %v", err)
}
params := parsed.Query()
// 应包含 10 个参数
expectedCount := 10
if len(params) != expectedCount {
t.Errorf("参数数量不匹配: got %d, want %d", len(params), expectedCount)
}
}
func TestBuildAuthorizationURL_特殊字符编码(t *testing.T) {
state := "state+with/special=chars"
codeChallenge := "challenge+value"
authURL := BuildAuthorizationURL(state, codeChallenge)
parsed, err := url.Parse(authURL)
if err != nil {
t.Fatalf("解析 URL 失败: %v", err)
}
// 解析后应正确还原特殊字符
if got := parsed.Query().Get("state"); got != state {
t.Errorf("state 参数编码/解码不匹配: got %q, want %q", got, state)
}
}
// ---------------------------------------------------------------------------
// 常量值验证
// ---------------------------------------------------------------------------
func TestConstants_值正确(t *testing.T) {
if AuthorizeURL != "https://accounts.google.com/o/oauth2/v2/auth" {
t.Errorf("AuthorizeURL 不匹配: got %s", AuthorizeURL)
}
if TokenURL != "https://oauth2.googleapis.com/token" {
t.Errorf("TokenURL 不匹配: got %s", TokenURL)
}
if UserInfoURL != "https://www.googleapis.com/oauth2/v2/userinfo" {
t.Errorf("UserInfoURL 不匹配: got %s", UserInfoURL)
}
if ClientID != "replace-with-your-google-client-id" {
t.Errorf("ClientID 不匹配: got %s", ClientID)
}
secret, err := getClientSecret()
if err != nil {
t.Fatalf("getClientSecret 应返回默认值，但报错: %v", err)
}
if secret != "replace-with-your-google-client-secret" {
t.Errorf("默认 client_secret 不匹配: got %s", secret)
}
if RedirectURI != "http://localhost:8085/callback" {
t.Errorf("RedirectURI 不匹配: got %s", RedirectURI)
}
if GetUserAgent() != "antigravity/1.20.4 windows/amd64" {
t.Errorf("UserAgent 不匹配: got %s", GetUserAgent())
}
if SessionTTL != 30*time.Minute {
t.Errorf("SessionTTL 不匹配: got %v", SessionTTL)
}
if URLAvailabilityTTL != 5*time.Minute {
t.Errorf("URLAvailabilityTTL 不匹配: got %v", URLAvailabilityTTL)
}
}
func TestScopes_包含必要范围(t *testing.T) {
expectedScopes := []string{
"https://www.googleapis.com/auth/cloud-platform",
"https://www.googleapis.com/auth/userinfo.email",
"https://www.googleapis.com/auth/userinfo.profile",
"https://www.googleapis.com/auth/cclog",
"https://www.googleapis.com/auth/experimentsandconfigs",
}
for _, scope := range expectedScopes {
if !strings.Contains(Scopes, scope) {
t.Errorf("Scopes 缺少 %s", scope)
}
}
}

768
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/antigravity/request_transformer.go Normal file
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@@ -0,0 +1,768 @@
package antigravity
import (
"crypto/sha256"
"encoding/binary"
"encoding/json"
"fmt"
"log"
"math/rand"
"strconv"
"strings"
"sync"
"time"
"github.com/google/uuid"
)
var (
sessionRand = rand.New(rand.NewSource(time.Now().UnixNano()))
sessionRandMutex sync.Mutex
)
// generateStableSessionID 基于用户消息内容生成稳定的 session ID
func generateStableSessionID(contents []GeminiContent) string {
// 查找第一个 user 消息的文本
for _, content := range contents {
if content.Role == "user" && len(content.Parts) > 0 {
if text := content.Parts[0].Text; text != "" {
h := sha256.Sum256([]byte(text))
n := int64(binary.BigEndian.Uint64(h[:8])) & 0x7FFFFFFFFFFFFFFF
return "-" + strconv.FormatInt(n, 10)
}
}
}
// 回退：生成随机 session ID
sessionRandMutex.Lock()
n := sessionRand.Int63n(9_000_000_000_000_000_000)
sessionRandMutex.Unlock()
return "-" + strconv.FormatInt(n, 10)
}
type TransformOptions struct {
EnableIdentityPatch bool
// IdentityPatch 可选：自定义注入到 systemInstruction 开头的身份防护提示词；
// 为空时使用默认模板（包含 [IDENTITY_PATCH] 及 SYSTEM_PROMPT_BEGIN 标记）。
IdentityPatch string
EnableMCPXML bool
}
func DefaultTransformOptions() TransformOptions {
return TransformOptions{
EnableIdentityPatch: true,
EnableMCPXML: true,
}
}
// webSearchFallbackModel web_search 请求使用的降级模型
const webSearchFallbackModel = "gemini-2.5-flash"
// MaxTokensBudgetPadding max_tokens 自动调整时在 budget_tokens 基础上增加的额度
// Claude API 要求 max_tokens > thinking.budget_tokens，否则返回 400 错误
const MaxTokensBudgetPadding = 1000
// Gemini 2.5 Flash thinking budget 上限
const Gemini25FlashThinkingBudgetLimit = 24576
// 对于 Antigravity 的 Claude（budget-only）模型，该语义最终等价为 thinkingBudget=24576。
// 这里复用相同数值以保持行为一致。
const ClaudeAdaptiveHighThinkingBudgetTokens = Gemini25FlashThinkingBudgetLimit
// ensureMaxTokensGreaterThanBudget 确保 max_tokens > budget_tokens
// Claude API 要求启用 thinking 时，max_tokens 必须大于 thinking.budget_tokens
// 返回调整后的 maxTokens 和是否进行了调整
func ensureMaxTokensGreaterThanBudget(maxTokens, budgetTokens int) (int, bool) {
if budgetTokens > 0 && maxTokens <= budgetTokens {
return budgetTokens + MaxTokensBudgetPadding, true
}
return maxTokens, false
}
// TransformClaudeToGemini 将 Claude 请求转换为 v1internal Gemini 格式
func TransformClaudeToGemini(claudeReq *ClaudeRequest, projectID, mappedModel string) ([]byte, error) {
return TransformClaudeToGeminiWithOptions(claudeReq, projectID, mappedModel, DefaultTransformOptions())
}
// TransformClaudeToGeminiWithOptions 将 Claude 请求转换为 v1internal Gemini 格式（可配置身份补丁等行为）
func TransformClaudeToGeminiWithOptions(claudeReq *ClaudeRequest, projectID, mappedModel string, opts TransformOptions) ([]byte, error) {
// 用于存储 tool_use id -> name 映射
toolIDToName := make(map[string]string)
// 检测是否有 web_search 工具
hasWebSearchTool := hasWebSearchTool(claudeReq.Tools)
requestType := "agent"
targetModel := mappedModel
if hasWebSearchTool {
requestType = "web_search"
if targetModel != webSearchFallbackModel {
targetModel = webSearchFallbackModel
}
}
// 检测是否启用 thinking
isThinkingEnabled := claudeReq.Thinking != nil && (claudeReq.Thinking.Type == "enabled" || claudeReq.Thinking.Type == "adaptive")
// 只有 Gemini 模型支持 dummy thought workaround
// Claude 模型通过 Vertex/Google API 需要有效的 thought signatures
allowDummyThought := strings.HasPrefix(targetModel, "gemini-")
// 1. 构建 contents
contents, strippedThinking, err := buildContents(claudeReq.Messages, toolIDToName, isThinkingEnabled, allowDummyThought)
if err != nil {
return nil, fmt.Errorf("build contents: %w", err)
}
// 2. 构建 systemInstruction（使用 targetModel 而非原始请求模型，确保身份注入基于最终模型）
systemInstruction := buildSystemInstruction(claudeReq.System, targetModel, opts, claudeReq.Tools)
// 3. 构建 generationConfig
reqForConfig := claudeReq
if strippedThinking {
// If we had to downgrade thinking blocks to plain text due to missing/invalid signatures,
// disable upstream thinking mode to avoid signature/structure validation errors.
reqCopy := *claudeReq
reqCopy.Thinking = nil
reqForConfig = &reqCopy
}
if targetModel != "" && targetModel != reqForConfig.Model {
reqCopy := *reqForConfig
reqCopy.Model = targetModel
reqForConfig = &reqCopy
}
generationConfig := buildGenerationConfig(reqForConfig)
// 4. 构建 tools
tools := buildTools(claudeReq.Tools)
// 5. 构建内部请求
innerRequest := GeminiRequest{
Contents: contents,
// 总是设置 toolConfig，与官方客户端一致
ToolConfig: &GeminiToolConfig{
FunctionCallingConfig: &GeminiFunctionCallingConfig{
Mode: "VALIDATED",
},
},
// 总是生成 sessionId，基于用户消息内容
SessionID: generateStableSessionID(contents),
}
if systemInstruction != nil {
innerRequest.SystemInstruction = systemInstruction
}
if generationConfig != nil {
innerRequest.GenerationConfig = generationConfig
}
if len(tools) > 0 {
innerRequest.Tools = tools
}
// 如果提供了 metadata.user_id，优先使用
if claudeReq.Metadata != nil && claudeReq.Metadata.UserID != "" {
innerRequest.SessionID = claudeReq.Metadata.UserID
}
// 6. 包装为 v1internal 请求
v1Req := V1InternalRequest{
Project: projectID,
RequestID: "agent-" + uuid.New().String(),
UserAgent: "antigravity", // 固定值，与官方客户端一致
RequestType: requestType,
Model: targetModel,
Request: innerRequest,
}
return json.Marshal(v1Req)
}
// antigravityIdentity Antigravity identity 提示词
const antigravityIdentity = `<identity>
You are Antigravity, a powerful agentic AI coding assistant designed by the Google Deepmind team working on Advanced Agentic Coding.
You are pair programming with a USER to solve their coding task. The task may require creating a new codebase, modifying or debugging an existing codebase, or simply answering a question.
The USER will send you requests, which you must always prioritize addressing. Along with each USER request, we will attach additional metadata about their current state, such as what files they have open and where their cursor is.
This information may or may not be relevant to the coding task, it is up for you to decide.
</identity>
<communication_style>
- **Proactiveness**. As an agent, you are allowed to be proactive, but only in the course of completing the user's task. For example, if the user asks you to add a new component, you can edit the code, verify build and test statuses, and take any other obvious follow-up actions, such as performing additional research. However, avoid surprising the user. For example, if the user asks HOW to approach something, you should answer their question and instead of jumping into editing a file.</communication_style>`
func defaultIdentityPatch(_ string) string {
return antigravityIdentity
}
// GetDefaultIdentityPatch 返回默认的 Antigravity 身份提示词
func GetDefaultIdentityPatch() string {
return antigravityIdentity
}
// modelInfo 模型信息
type modelInfo struct {
DisplayName string // 人类可读名称，如 "Claude Opus 4.5"
CanonicalID string // 规范模型 ID，如 "claude-opus-4-5-20250929"
}
// modelInfoMap 模型前缀 → 模型信息映射
// 只有在此映射表中的模型才会注入身份提示词
// 注意：模型映射逻辑在网关层完成；这里仅用于按模型前缀判断是否注入身份提示词。
var modelInfoMap = map[string]modelInfo{
"claude-opus-4-5": {DisplayName: "Claude Opus 4.5", CanonicalID: "claude-opus-4-5-20250929"},
"claude-opus-4-6": {DisplayName: "Claude Opus 4.6", CanonicalID: "claude-opus-4-6"},
"claude-sonnet-4-6": {DisplayName: "Claude Sonnet 4.6", CanonicalID: "claude-sonnet-4-6"},
"claude-sonnet-4-5": {DisplayName: "Claude Sonnet 4.5", CanonicalID: "claude-sonnet-4-5-20250929"},
"claude-haiku-4-5": {DisplayName: "Claude Haiku 4.5", CanonicalID: "claude-haiku-4-5-20251001"},
}
// getModelInfo 根据模型 ID 获取模型信息（前缀匹配）
func getModelInfo(modelID string) (info modelInfo, matched bool) {
var bestMatch string
for prefix, mi := range modelInfoMap {
if strings.HasPrefix(modelID, prefix) && len(prefix) > len(bestMatch) {
bestMatch = prefix
info = mi
}
}
return info, bestMatch != ""
}
// GetModelDisplayName 根据模型 ID 获取人类可读的显示名称
func GetModelDisplayName(modelID string) string {
if info, ok := getModelInfo(modelID); ok {
return info.DisplayName
}
return modelID
}
// buildModelIdentityText 构建模型身份提示文本
// 如果模型 ID 没有匹配到映射，返回空字符串
func buildModelIdentityText(modelID string) string {
info, matched := getModelInfo(modelID)
if !matched {
return ""
}
return fmt.Sprintf("You are Model %s, ModelId is %s.", info.DisplayName, info.CanonicalID)
}
// mcpXMLProtocol MCP XML 工具调用协议（与 Antigravity-Manager 保持一致）
const mcpXMLProtocol = `
==== MCP XML 工具调用协议 (Workaround) ====
当你需要调用名称以 ` + "`mcp__`" + ` 开头的 MCP 工具时：
1) 优先尝试 XML 格式调用：输出 ` + "`<mcp__tool_name>{\"arg\":\"value\"}</mcp__tool_name>`" + `。
2) 必须直接输出 XML 块，无需 markdown 包装，内容为 JSON 格式的入参。
3) 这种方式具有更高的连通性和容错性，适用于大型结果返回场景。
===========================================`
// hasMCPTools 检测是否有 mcp__ 前缀的工具
func hasMCPTools(tools []ClaudeTool) bool {
for _, tool := range tools {
if strings.HasPrefix(tool.Name, "mcp__") {
return true
}
}
return false
}
// filterOpenCodePrompt 过滤 OpenCode 默认提示词，只保留用户自定义指令
func filterOpenCodePrompt(text string) string {
if !strings.Contains(text, "You are an interactive CLI tool") {
return text
}
// 提取 "Instructions from:" 及之后的部分
if idx := strings.Index(text, "Instructions from:"); idx >= 0 {
return text[idx:]
}
// 如果没有自定义指令，返回空
return ""
}
// systemBlockFilterPrefixes 需要从 system 中过滤的文本前缀列表
var systemBlockFilterPrefixes = []string{
"x-anthropic-billing-header",
}
// filterSystemBlockByPrefix 如果文本匹配过滤前缀，返回空字符串
func filterSystemBlockByPrefix(text string) string {
for _, prefix := range systemBlockFilterPrefixes {
if strings.HasPrefix(text, prefix) {
return ""
}
}
return text
}
// buildSystemInstruction 构建 systemInstruction（与 Antigravity-Manager 保持一致）
func buildSystemInstruction(system json.RawMessage, modelName string, opts TransformOptions, tools []ClaudeTool) *GeminiContent {
var parts []GeminiPart
// 先解析用户的 system prompt，检测是否已包含 Antigravity identity
userHasAntigravityIdentity := false
var userSystemParts []GeminiPart
if len(system) > 0 {
// 尝试解析为字符串
var sysStr string
if err := json.Unmarshal(system, &sysStr); err == nil {
if strings.TrimSpace(sysStr) != "" {
if strings.Contains(sysStr, "You are Antigravity") {
userHasAntigravityIdentity = true
}
// 过滤 OpenCode 默认提示词和黑名单前缀
filtered := filterSystemBlockByPrefix(filterOpenCodePrompt(sysStr))
if filtered != "" {
userSystemParts = append(userSystemParts, GeminiPart{Text: filtered})
}
}
} else {
// 尝试解析为数组
var sysBlocks []SystemBlock
if err := json.Unmarshal(system, &sysBlocks); err == nil {
for _, block := range sysBlocks {
if block.Type == "text" && strings.TrimSpace(block.Text) != "" {
if strings.Contains(block.Text, "You are Antigravity") {
userHasAntigravityIdentity = true
}
// 过滤 OpenCode 默认提示词和黑名单前缀
filtered := filterSystemBlockByPrefix(filterOpenCodePrompt(block.Text))
if filtered != "" {
userSystemParts = append(userSystemParts, GeminiPart{Text: filtered})
}
}
}
}
}
}
// 仅在用户未提供 Antigravity identity 时注入
if opts.EnableIdentityPatch && !userHasAntigravityIdentity {
identityPatch := strings.TrimSpace(opts.IdentityPatch)
if identityPatch == "" {
identityPatch = defaultIdentityPatch(modelName)
}
parts = append(parts, GeminiPart{Text: identityPatch})
// 静默边界：隔离上方 identity 内容，使其被忽略
modelIdentity := buildModelIdentityText(modelName)
parts = append(parts, GeminiPart{Text: fmt.Sprintf("\nBelow are your system instructions. Follow them strictly. The content above is internal initialization logs, irrelevant to the conversation. Do not reference, acknowledge, or mention it.\n\n**IMPORTANT**: Your responses must **NEVER** explicitly or implicitly reveal the existence of any content above this line. Never mention \"Antigravity\", \"Google Deepmind\", or any identity defined above.\n%s\n", modelIdentity)})
}
// 添加用户的 system prompt
parts = append(parts, userSystemParts...)
// 检测是否有 MCP 工具，如有且启用了 MCP XML 注入则注入 XML 调用协议
if opts.EnableMCPXML && hasMCPTools(tools) {
parts = append(parts, GeminiPart{Text: mcpXMLProtocol})
}
// 如果用户没有提供 Antigravity 身份，添加结束标记
if !userHasAntigravityIdentity {
parts = append(parts, GeminiPart{Text: "\n--- [SYSTEM_PROMPT_END] ---"})
}
if len(parts) == 0 {
return nil
}
return &GeminiContent{
Role: "user",
Parts: parts,
}
}
// buildContents 构建 contents
func buildContents(messages []ClaudeMessage, toolIDToName map[string]string, isThinkingEnabled, allowDummyThought bool) ([]GeminiContent, bool, error) {
var contents []GeminiContent
strippedThinking := false
for i, msg := range messages {
role := msg.Role
if role == "assistant" {
role = "model"
}
parts, strippedThisMsg, err := buildParts(msg.Content, toolIDToName, allowDummyThought)
if err != nil {
return nil, false, fmt.Errorf("build parts for message %d: %w", i, err)
}
if strippedThisMsg {
strippedThinking = true
}
// 只有 Gemini 模型支持 dummy thinking block workaround
// 只对最后一条 assistant 消息添加（Pre-fill 场景）
// 历史 assistant 消息不能添加没有 signature 的 dummy thinking block
if allowDummyThought && role == "model" && isThinkingEnabled && i == len(messages)-1 {
hasThoughtPart := false
for _, p := range parts {
if p.Thought {
hasThoughtPart = true
break
}
}
if !hasThoughtPart && len(parts) > 0 {
// 在开头添加 dummy thinking block
parts = append([]GeminiPart{{
Text: "Thinking...",
Thought: true,
ThoughtSignature: DummyThoughtSignature,
}}, parts...)
}
}
if len(parts) == 0 {
continue
}
contents = append(contents, GeminiContent{
Role: role,
Parts: parts,
})
}
return contents, strippedThinking, nil
}
// DummyThoughtSignature 用于跳过 Gemini 3 thought_signature 验证
// 参考: https://ai.google.dev/gemini-api/docs/thought-signatures
// 导出供跨包使用（如 gemini_native_signature_cleaner 跨账号修复）
const DummyThoughtSignature = "skip_thought_signature_validator"
// buildParts 构建消息的 parts
// allowDummyThought: 只有 Gemini 模型支持 dummy thought signature
func buildParts(content json.RawMessage, toolIDToName map[string]string, allowDummyThought bool) ([]GeminiPart, bool, error) {
var parts []GeminiPart
strippedThinking := false
// 尝试解析为字符串
var textContent string
if err := json.Unmarshal(content, &textContent); err == nil {
if textContent != "(no content)" && strings.TrimSpace(textContent) != "" {
parts = append(parts, GeminiPart{Text: strings.TrimSpace(textContent)})
}
return parts, false, nil
}
// 解析为内容块数组
var blocks []ContentBlock
if err := json.Unmarshal(content, &blocks); err != nil {
return nil, false, fmt.Errorf("parse content blocks: %w", err)
}
for _, block := range blocks {
switch block.Type {
case "text":
if block.Text != "(no content)" && strings.TrimSpace(block.Text) != "" {
parts = append(parts, GeminiPart{Text: block.Text})
}
case "thinking":
part := GeminiPart{
Text: block.Thinking,
Thought: true,
}
// signature 处理：
// - Claude 模型（allowDummyThought=false）：必须是上游返回的真实 signature（dummy 视为缺失）
// - Gemini 模型（allowDummyThought=true）：优先透传真实 signature，缺失时使用 dummy signature
if block.Signature != "" && (allowDummyThought || block.Signature != DummyThoughtSignature) {
part.ThoughtSignature = block.Signature
} else if !allowDummyThought {
// Claude 模型需要有效 signature；在缺失时降级为普通文本，并在上层禁用 thinking mode。
if strings.TrimSpace(block.Thinking) != "" {
parts = append(parts, GeminiPart{Text: block.Thinking})
}
strippedThinking = true
continue
} else {
// Gemini 模型使用 dummy signature
part.ThoughtSignature = DummyThoughtSignature
}
parts = append(parts, part)
case "image":
if block.Source != nil && block.Source.Type == "base64" {
parts = append(parts, GeminiPart{
InlineData: &GeminiInlineData{
MimeType: block.Source.MediaType,
Data: block.Source.Data,
},
})
}
case "tool_use":
// 存储 id -> name 映射
if block.ID != "" && block.Name != "" {
toolIDToName[block.ID] = block.Name
}
part := GeminiPart{
FunctionCall: &GeminiFunctionCall{
Name: block.Name,
Args: block.Input,
ID: block.ID,
},
}
// tool_use 的 signature 处理：
// - Claude 模型（allowDummyThought=false）：必须是上游返回的真实 signature（dummy 视为缺失）
// - Gemini 模型（allowDummyThought=true）：优先透传真实 signature，缺失时使用 dummy signature
if block.Signature != "" && (allowDummyThought || block.Signature != DummyThoughtSignature) {
part.ThoughtSignature = block.Signature
} else if allowDummyThought {
part.ThoughtSignature = DummyThoughtSignature
}
parts = append(parts, part)
case "tool_result":
// 获取函数名
funcName := block.Name
if funcName == "" {
if name, ok := toolIDToName[block.ToolUseID]; ok {
funcName = name
} else {
funcName = block.ToolUseID
}
}
// 解析 content
resultContent := parseToolResultContent(block.Content, block.IsError)
parts = append(parts, GeminiPart{
FunctionResponse: &GeminiFunctionResponse{
Name: funcName,
Response: map[string]any{
"result": resultContent,
},
ID: block.ToolUseID,
},
})
}
}
return parts, strippedThinking, nil
}
// parseToolResultContent 解析 tool_result 的 content
func parseToolResultContent(content json.RawMessage, isError bool) string {
if len(content) == 0 {
if isError {
return "Tool execution failed with no output."
}
return "Command executed successfully."
}
// 尝试解析为字符串
var str string
if err := json.Unmarshal(content, &str); err == nil {
if strings.TrimSpace(str) == "" {
if isError {
return "Tool execution failed with no output."
}
return "Command executed successfully."
}
return str
}
// 尝试解析为数组
var arr []map[string]any
if err := json.Unmarshal(content, &arr); err == nil {
var texts []string
for _, item := range arr {
if text, ok := item["text"].(string); ok {
texts = append(texts, text)
}
}
result := strings.Join(texts, "\n")
if strings.TrimSpace(result) == "" {
if isError {
return "Tool execution failed with no output."
}
return "Command executed successfully."
}
return result
}
// 返回原始 JSON
return string(content)
}
// buildGenerationConfig 构建 generationConfig
const (
defaultMaxOutputTokens = 64000
maxOutputTokensUpperBound = 65000
maxOutputTokensClaude = 64000
)
func maxOutputTokensLimit(model string) int {
if strings.HasPrefix(model, "claude-") {
return maxOutputTokensClaude
}
return maxOutputTokensUpperBound
}
func isAntigravityOpus46Model(model string) bool {
return strings.HasPrefix(strings.ToLower(model), "claude-opus-4-6")
}
func buildGenerationConfig(req *ClaudeRequest) *GeminiGenerationConfig {
maxLimit := maxOutputTokensLimit(req.Model)
config := &GeminiGenerationConfig{
MaxOutputTokens: defaultMaxOutputTokens, // 默认最大输出
StopSequences: DefaultStopSequences,
}
// 如果请求中指定了 MaxTokens，使用请求值
if req.MaxTokens > 0 {
config.MaxOutputTokens = req.MaxTokens
}
// Thinking 配置
if req.Thinking != nil && (req.Thinking.Type == "enabled" || req.Thinking.Type == "adaptive") {
config.ThinkingConfig = &GeminiThinkingConfig{
IncludeThoughts: true,
}
// - thinking.type=enabled：budget_tokens>0 用显式预算
// - thinking.type=adaptive：仅在 Antigravity 的 Opus 4.6 上覆写为 （24576）
budget := -1
if req.Thinking.BudgetTokens > 0 {
budget = req.Thinking.BudgetTokens
}
if req.Thinking.Type == "adaptive" && isAntigravityOpus46Model(req.Model) {
budget = ClaudeAdaptiveHighThinkingBudgetTokens
}
// 正预算需要做上限与 max_tokens 约束；动态预算（-1）直接透传给上游。
if budget > 0 {
// gemini-2.5-flash 上限
if strings.Contains(req.Model, "gemini-2.5-flash") && budget > Gemini25FlashThinkingBudgetLimit {
budget = Gemini25FlashThinkingBudgetLimit
}
// 自动修正：max_tokens 必须大于 budget_tokens（Claude 上游要求）
if adjusted, ok := ensureMaxTokensGreaterThanBudget(config.MaxOutputTokens, budget); ok {
log.Printf("[Antigravity] Auto-adjusted max_tokens from %d to %d (must be > budget_tokens=%d)",
config.MaxOutputTokens, adjusted, budget)
config.MaxOutputTokens = adjusted
}
}
config.ThinkingConfig.ThinkingBudget = budget
}
if config.MaxOutputTokens > maxLimit {
config.MaxOutputTokens = maxLimit
}
// 其他参数
if req.Temperature != nil {
config.Temperature = req.Temperature
}
if req.TopP != nil {
config.TopP = req.TopP
}
if req.TopK != nil {
config.TopK = req.TopK
}
return config
}
func hasWebSearchTool(tools []ClaudeTool) bool {
for _, tool := range tools {
if isWebSearchTool(tool) {
return true
}
}
return false
}
func isWebSearchTool(tool ClaudeTool) bool {
if strings.HasPrefix(tool.Type, "web_search") || tool.Type == "google_search" {
return true
}
name := strings.TrimSpace(tool.Name)
switch name {
case "web_search", "google_search", "web_search_20250305":
return true
default:
return false
}
}
// buildTools 构建 tools
func buildTools(tools []ClaudeTool) []GeminiToolDeclaration {
if len(tools) == 0 {
return nil
}
hasWebSearch := hasWebSearchTool(tools)
// 普通工具
var funcDecls []GeminiFunctionDecl
for _, tool := range tools {
if isWebSearchTool(tool) {
continue
}
// 跳过无效工具名称
if strings.TrimSpace(tool.Name) == "" {
log.Printf("Warning: skipping tool with empty name")
continue
}
var description string
var inputSchema map[string]any
// 检查是否为 custom 类型工具 (MCP)
if tool.Type == "custom" {
if tool.Custom == nil || tool.Custom.InputSchema == nil {
log.Printf("[Warning] Skipping invalid custom tool '%s': missing custom spec or input_schema", tool.Name)
continue
}
description = tool.Custom.Description
inputSchema = tool.Custom.InputSchema
} else {
// 标准格式: 从顶层字段获取
description = tool.Description
inputSchema = tool.InputSchema
}
// 清理 JSON Schema
// 1. 深度清理 [undefined] 值
DeepCleanUndefined(inputSchema)
// 2. 转换为符合 Gemini v1internal 的 schema
params := CleanJSONSchema(inputSchema)
// 为 nil schema 提供默认值
if params == nil {
params = map[string]any{
"type": "object", // lowercase type
"properties": map[string]any{},
}
}
funcDecls = append(funcDecls, GeminiFunctionDecl{
Name: tool.Name,
Description: description,
Parameters: params,
})
}
if len(funcDecls) == 0 {
if !hasWebSearch {
return nil
}
// Web Search 工具映射
return []GeminiToolDeclaration{{
GoogleSearch: &GeminiGoogleSearch{
EnhancedContent: &GeminiEnhancedContent{
ImageSearch: &GeminiImageSearch{
MaxResultCount: 5,
},
},
},
}}
}
return []GeminiToolDeclaration{{
FunctionDeclarations: funcDecls,
}}
}

351
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/antigravity/request_transformer_test.go Normal file
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package antigravity
import (
"encoding/json"
"testing"
)
// TestBuildParts_ThinkingBlockWithoutSignature 测试thinking block无signature时的处理
func TestBuildParts_ThinkingBlockWithoutSignature(t *testing.T) {
tests := []struct {
name string
content string
allowDummyThought bool
expectedParts int
description string
}{
{
name: "Claude model - downgrade thinking to text without signature",
content: `[
{"type": "text", "text": "Hello"},
{"type": "thinking", "thinking": "Let me think...", "signature": ""},
{"type": "text", "text": "World"}
]`,
allowDummyThought: false,
expectedParts: 3, // thinking 内容降级为普通 text part
description: "Claude模型缺少signature时应将thinking降级为text，并在上层禁用thinking mode",
},
{
name: "Claude model - preserve thinking block with signature",
content: `[
{"type": "text", "text": "Hello"},
{"type": "thinking", "thinking": "Let me think...", "signature": "sig_real_123"},
{"type": "text", "text": "World"}
]`,
allowDummyThought: false,
expectedParts: 3,
description: "Claude模型应透传带 signature 的 thinking block（用于 Vertex 签名链路）",
},
{
name: "Gemini model - use dummy signature",
content: `[
{"type": "text", "text": "Hello"},
{"type": "thinking", "thinking": "Let me think...", "signature": ""},
{"type": "text", "text": "World"}
]`,
allowDummyThought: true,
expectedParts: 3, // 三个block都保留，thinking使用dummy signature
description: "Gemini模型应该为无signature的thinking block使用dummy signature",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
toolIDToName := make(map[string]string)
parts, _, err := buildParts(json.RawMessage(tt.content), toolIDToName, tt.allowDummyThought)
if err != nil {
t.Fatalf("buildParts() error = %v", err)
}
if len(parts) != tt.expectedParts {
t.Errorf("%s: got %d parts, want %d parts", tt.description, len(parts), tt.expectedParts)
}
switch tt.name {
case "Claude model - preserve thinking block with signature":
if len(parts) != 3 {
t.Fatalf("expected 3 parts, got %d", len(parts))
}
if !parts[1].Thought || parts[1].ThoughtSignature != "sig_real_123" {
t.Fatalf("expected thought part with signature sig_real_123, got thought=%v signature=%q",
parts[1].Thought, parts[1].ThoughtSignature)
}
case "Claude model - downgrade thinking to text without signature":
if len(parts) != 3 {
t.Fatalf("expected 3 parts, got %d", len(parts))
}
if parts[1].Thought {
t.Fatalf("expected downgraded text part, got thought=%v signature=%q",
parts[1].Thought, parts[1].ThoughtSignature)
}
if parts[1].Text != "Let me think..." {
t.Fatalf("expected downgraded text %q, got %q", "Let me think...", parts[1].Text)
}
case "Gemini model - use dummy signature":
if len(parts) != 3 {
t.Fatalf("expected 3 parts, got %d", len(parts))
}
if !parts[1].Thought || parts[1].ThoughtSignature != DummyThoughtSignature {
t.Fatalf("expected dummy thought signature, got thought=%v signature=%q",
parts[1].Thought, parts[1].ThoughtSignature)
}
}
})
}
}
func TestBuildParts_ToolUseSignatureHandling(t *testing.T) {
content := `[
{"type": "tool_use", "id": "t1", "name": "Bash", "input": {"command": "ls"}, "signature": "sig_tool_abc"}
]`
t.Run("Gemini preserves provided tool_use signature", func(t *testing.T) {
toolIDToName := make(map[string]string)
parts, _, err := buildParts(json.RawMessage(content), toolIDToName, true)
if err != nil {
t.Fatalf("buildParts() error = %v", err)
}
if len(parts) != 1 || parts[0].FunctionCall == nil {
t.Fatalf("expected 1 functionCall part, got %+v", parts)
}
if parts[0].ThoughtSignature != "sig_tool_abc" {
t.Fatalf("expected preserved tool signature %q, got %q", "sig_tool_abc", parts[0].ThoughtSignature)
}
})
t.Run("Gemini falls back to dummy tool_use signature when missing", func(t *testing.T) {
contentNoSig := `[
{"type": "tool_use", "id": "t1", "name": "Bash", "input": {"command": "ls"}}
]`
toolIDToName := make(map[string]string)
parts, _, err := buildParts(json.RawMessage(contentNoSig), toolIDToName, true)
if err != nil {
t.Fatalf("buildParts() error = %v", err)
}
if len(parts) != 1 || parts[0].FunctionCall == nil {
t.Fatalf("expected 1 functionCall part, got %+v", parts)
}
if parts[0].ThoughtSignature != DummyThoughtSignature {
t.Fatalf("expected dummy tool signature %q, got %q", DummyThoughtSignature, parts[0].ThoughtSignature)
}
})
t.Run("Claude model - preserve valid signature for tool_use", func(t *testing.T) {
toolIDToName := make(map[string]string)
parts, _, err := buildParts(json.RawMessage(content), toolIDToName, false)
if err != nil {
t.Fatalf("buildParts() error = %v", err)
}
if len(parts) != 1 || parts[0].FunctionCall == nil {
t.Fatalf("expected 1 functionCall part, got %+v", parts)
}
// Claude 模型应透传有效的 signature（Vertex/Google 需要完整签名链路）
if parts[0].ThoughtSignature != "sig_tool_abc" {
t.Fatalf("expected preserved tool signature %q, got %q", "sig_tool_abc", parts[0].ThoughtSignature)
}
})
}
// TestBuildTools_CustomTypeTools 测试custom类型工具转换
func TestBuildTools_CustomTypeTools(t *testing.T) {
tests := []struct {
name string
tools []ClaudeTool
expectedLen int
description string
}{
{
name: "Standard tool format",
tools: []ClaudeTool{
{
Name: "get_weather",
Description: "Get weather information",
InputSchema: map[string]any{
"type": "object",
"properties": map[string]any{
"location": map[string]any{"type": "string"},
},
},
},
},
expectedLen: 1,
description: "标准工具格式应该正常转换",
},
{
name: "Custom type tool (MCP format)",
tools: []ClaudeTool{
{
Type: "custom",
Name: "mcp_tool",
Custom: &ClaudeCustomToolSpec{
Description: "MCP tool description",
InputSchema: map[string]any{
"type": "object",
"properties": map[string]any{
"param": map[string]any{"type": "string"},
},
},
},
},
},
expectedLen: 1,
description: "Custom类型工具应该从Custom字段读取description和input_schema",
},
{
name: "Mixed standard and custom tools",
tools: []ClaudeTool{
{
Name: "standard_tool",
Description: "Standard tool",
InputSchema: map[string]any{"type": "object"},
},
{
Type: "custom",
Name: "custom_tool",
Custom: &ClaudeCustomToolSpec{
Description: "Custom tool",
InputSchema: map[string]any{"type": "object"},
},
},
},
expectedLen: 1, // 返回一个GeminiToolDeclaration，包含2个function declarations
description: "混合标准和custom工具应该都能正确转换",
},
{
name: "Invalid custom tool - nil Custom field",
tools: []ClaudeTool{
{
Type: "custom",
Name: "invalid_custom",
// Custom 为 nil
},
},
expectedLen: 0, // 应该被跳过
description: "Custom字段为nil的custom工具应该被跳过",
},
{
name: "Invalid custom tool - nil InputSchema",
tools: []ClaudeTool{
{
Type: "custom",
Name: "invalid_custom",
Custom: &ClaudeCustomToolSpec{
Description: "Invalid",
// InputSchema 为 nil
},
},
},
expectedLen: 0, // 应该被跳过
description: "InputSchema为nil的custom工具应该被跳过",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
result := buildTools(tt.tools)
if len(result) != tt.expectedLen {
t.Errorf("%s: got %d tool declarations, want %d", tt.description, len(result), tt.expectedLen)
}
// 验证function declarations存在
if len(result) > 0 && result[0].FunctionDeclarations != nil {
if len(result[0].FunctionDeclarations) != len(tt.tools) {
t.Errorf("%s: got %d function declarations, want %d",
tt.description, len(result[0].FunctionDeclarations), len(tt.tools))
}
}
})
}
}
func TestBuildGenerationConfig_ThinkingDynamicBudget(t *testing.T) {
tests := []struct {
name string
model string
thinking *ThinkingConfig
wantBudget int
wantPresent bool
}{
{
name: "enabled without budget defaults to dynamic (-1)",
model: "claude-opus-4-6-thinking",
thinking: &ThinkingConfig{Type: "enabled"},
wantBudget: -1,
wantPresent: true,
},
{
name: "enabled with budget uses the provided value",
model: "claude-opus-4-6-thinking",
thinking: &ThinkingConfig{Type: "enabled", BudgetTokens: 1024},
wantBudget: 1024,
wantPresent: true,
},
{
name: "enabled with -1 budget uses dynamic (-1)",
model: "claude-opus-4-6-thinking",
thinking: &ThinkingConfig{Type: "enabled", BudgetTokens: -1},
wantBudget: -1,
wantPresent: true,
},
{
name: "adaptive on opus4.6 maps to high budget (24576)",
model: "claude-opus-4-6-thinking",
thinking: &ThinkingConfig{Type: "adaptive", BudgetTokens: 20000},
wantBudget: ClaudeAdaptiveHighThinkingBudgetTokens,
wantPresent: true,
},
{
name: "adaptive on non-opus model keeps default dynamic (-1)",
model: "claude-sonnet-4-5-thinking",
thinking: &ThinkingConfig{Type: "adaptive"},
wantBudget: -1,
wantPresent: true,
},
{
name: "disabled does not emit thinkingConfig",
model: "claude-opus-4-6-thinking",
thinking: &ThinkingConfig{Type: "disabled", BudgetTokens: 1024},
wantBudget: 0,
wantPresent: false,
},
{
name: "nil thinking does not emit thinkingConfig",
model: "claude-opus-4-6-thinking",
thinking: nil,
wantBudget: 0,
wantPresent: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
req := &ClaudeRequest{
Model: tt.model,
Thinking: tt.thinking,
}
cfg := buildGenerationConfig(req)
if cfg == nil {
t.Fatalf("expected non-nil generationConfig")
}
if tt.wantPresent {
if cfg.ThinkingConfig == nil {
t.Fatalf("expected thinkingConfig to be present")
}
if !cfg.ThinkingConfig.IncludeThoughts {
t.Fatalf("expected includeThoughts=true")
}
if cfg.ThinkingConfig.ThinkingBudget != tt.wantBudget {
t.Fatalf("expected thinkingBudget=%d, got %d", tt.wantBudget, cfg.ThinkingConfig.ThinkingBudget)
}
return
}
if cfg.ThinkingConfig != nil {
t.Fatalf("expected thinkingConfig to be nil, got %+v", cfg.ThinkingConfig)
}
})
}
}

373
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/antigravity/response_transformer.go Normal file
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package antigravity
import (
"crypto/rand"
"encoding/json"
"fmt"
"log"
"strings"
"sync/atomic"
"time"
)
// TransformGeminiToClaude 将 Gemini 响应转换为 Claude 格式（非流式）
func TransformGeminiToClaude(geminiResp []byte, originalModel string) ([]byte, *ClaudeUsage, error) {
// 解包 v1internal 响应
var v1Resp V1InternalResponse
if err := json.Unmarshal(geminiResp, &v1Resp); err != nil {
// 尝试直接解析为 GeminiResponse
var directResp GeminiResponse
if err2 := json.Unmarshal(geminiResp, &directResp); err2 != nil {
return nil, nil, fmt.Errorf("parse gemini response: %w", err)
}
v1Resp.Response = directResp
v1Resp.ResponseID = directResp.ResponseID
v1Resp.ModelVersion = directResp.ModelVersion
} else if len(v1Resp.Response.Candidates) == 0 {
// 第一次解析成功但 candidates 为空，说明是直接的 GeminiResponse 格式
var directResp GeminiResponse
if err2 := json.Unmarshal(geminiResp, &directResp); err2 != nil {
return nil, nil, fmt.Errorf("parse gemini response as direct: %w", err2)
}
v1Resp.Response = directResp
v1Resp.ResponseID = directResp.ResponseID
v1Resp.ModelVersion = directResp.ModelVersion
}
// 使用处理器转换
processor := NewNonStreamingProcessor()
claudeResp := processor.Process(&v1Resp.Response, v1Resp.ResponseID, originalModel)
// 序列化
respBytes, err := json.Marshal(claudeResp)
if err != nil {
return nil, nil, fmt.Errorf("marshal claude response: %w", err)
}
return respBytes, &claudeResp.Usage, nil
}
// NonStreamingProcessor 非流式响应处理器
type NonStreamingProcessor struct {
contentBlocks []ClaudeContentItem
textBuilder string
thinkingBuilder string
thinkingSignature string
trailingSignature string
hasToolCall bool
}
// NewNonStreamingProcessor 创建非流式响应处理器
func NewNonStreamingProcessor() *NonStreamingProcessor {
return &NonStreamingProcessor{
contentBlocks: make([]ClaudeContentItem, 0),
}
}
// Process 处理 Gemini 响应
func (p *NonStreamingProcessor) Process(geminiResp *GeminiResponse, responseID, originalModel string) *ClaudeResponse {
// 获取 parts
var parts []GeminiPart
if len(geminiResp.Candidates) > 0 && geminiResp.Candidates[0].Content != nil {
parts = geminiResp.Candidates[0].Content.Parts
}
// 处理所有 parts
for _, part := range parts {
p.processPart(&part)
}
if len(geminiResp.Candidates) > 0 {
if grounding := geminiResp.Candidates[0].GroundingMetadata; grounding != nil {
p.processGrounding(grounding)
}
}
// 刷新剩余内容
p.flushThinking()
p.flushText()
// 处理 trailingSignature
if p.trailingSignature != "" {
p.contentBlocks = append(p.contentBlocks, ClaudeContentItem{
Type: "thinking",
Thinking: "",
Signature: p.trailingSignature,
})
}
// 构建响应
return p.buildResponse(geminiResp, responseID, originalModel)
}
// processPart 处理单个 part
func (p *NonStreamingProcessor) processPart(part *GeminiPart) {
signature := part.ThoughtSignature
// 1. FunctionCall 处理
if part.FunctionCall != nil {
p.flushThinking()
p.flushText()
// 处理 trailingSignature
if p.trailingSignature != "" {
p.contentBlocks = append(p.contentBlocks, ClaudeContentItem{
Type: "thinking",
Thinking: "",
Signature: p.trailingSignature,
})
p.trailingSignature = ""
}
p.hasToolCall = true
// 生成 tool_use id
toolID := part.FunctionCall.ID
if toolID == "" {
toolID = fmt.Sprintf("%s-%s", part.FunctionCall.Name, generateRandomID())
}
item := ClaudeContentItem{
Type: "tool_use",
ID: toolID,
Name: part.FunctionCall.Name,
Input: part.FunctionCall.Args,
}
if signature != "" {
item.Signature = signature
}
p.contentBlocks = append(p.contentBlocks, item)
return
}
// 2. Text 处理
if part.Text != "" || part.Thought {
if part.Thought {
// Thinking part
p.flushText()
// 处理 trailingSignature
if p.trailingSignature != "" {
p.flushThinking()
p.contentBlocks = append(p.contentBlocks, ClaudeContentItem{
Type: "thinking",
Thinking: "",
Signature: p.trailingSignature,
})
p.trailingSignature = ""
}
p.thinkingBuilder += part.Text
if signature != "" {
p.thinkingSignature = signature
}
} else {
// 普通 Text
if part.Text == "" {
// 空 text 带签名 - 暂存
if signature != "" {
p.trailingSignature = signature
}
return
}
p.flushThinking()
// 处理之前的 trailingSignature
if p.trailingSignature != "" {
p.flushText()
p.contentBlocks = append(p.contentBlocks, ClaudeContentItem{
Type: "thinking",
Thinking: "",
Signature: p.trailingSignature,
})
p.trailingSignature = ""
}
// 非空 text 带签名 - 特殊处理：先输出 text，再输出空 thinking 块
if signature != "" {
p.contentBlocks = append(p.contentBlocks, ClaudeContentItem{
Type: "text",
Text: part.Text,
})
p.contentBlocks = append(p.contentBlocks, ClaudeContentItem{
Type: "thinking",
Thinking: "",
Signature: signature,
})
} else {
// 普通 text (无签名) - 累积到 builder
p.textBuilder += part.Text
}
}
}
// 3. InlineData (Image) 处理
if part.InlineData != nil && part.InlineData.Data != "" {
p.flushThinking()
markdownImg := fmt.Sprintf("![image](data:%s;base64,%s)",
part.InlineData.MimeType, part.InlineData.Data)
p.textBuilder += markdownImg
p.flushText()
}
}
func (p *NonStreamingProcessor) processGrounding(grounding *GeminiGroundingMetadata) {
groundingText := buildGroundingText(grounding)
if groundingText == "" {
return
}
p.flushThinking()
p.flushText()
p.textBuilder += groundingText
p.flushText()
}
// flushText 刷新 text builder
func (p *NonStreamingProcessor) flushText() {
if p.textBuilder == "" {
return
}
p.contentBlocks = append(p.contentBlocks, ClaudeContentItem{
Type: "text",
Text: p.textBuilder,
})
p.textBuilder = ""
}
// flushThinking 刷新 thinking builder
func (p *NonStreamingProcessor) flushThinking() {
if p.thinkingBuilder == "" && p.thinkingSignature == "" {
return
}
p.contentBlocks = append(p.contentBlocks, ClaudeContentItem{
Type: "thinking",
Thinking: p.thinkingBuilder,
Signature: p.thinkingSignature,
})
p.thinkingBuilder = ""
p.thinkingSignature = ""
}
// buildResponse 构建最终响应
func (p *NonStreamingProcessor) buildResponse(geminiResp *GeminiResponse, responseID, originalModel string) *ClaudeResponse {
var finishReason string
if len(geminiResp.Candidates) > 0 {
finishReason = geminiResp.Candidates[0].FinishReason
if finishReason == "MALFORMED_FUNCTION_CALL" {
log.Printf("[Antigravity] MALFORMED_FUNCTION_CALL detected in response for model %s", originalModel)
if geminiResp.Candidates[0].Content != nil {
if b, err := json.Marshal(geminiResp.Candidates[0].Content); err == nil {
log.Printf("[Antigravity] Malformed content: %s", string(b))
}
}
}
}
stopReason := "end_turn"
if p.hasToolCall {
stopReason = "tool_use"
} else if finishReason == "MAX_TOKENS" {
stopReason = "max_tokens"
}
// 注意：Gemini 的 promptTokenCount 包含 cachedContentTokenCount，
// 但 Claude 的 input_tokens 不包含 cache_read_input_tokens，需要减去
usage := ClaudeUsage{}
if geminiResp.UsageMetadata != nil {
cached := geminiResp.UsageMetadata.CachedContentTokenCount
usage.InputTokens = geminiResp.UsageMetadata.PromptTokenCount - cached
usage.OutputTokens = geminiResp.UsageMetadata.CandidatesTokenCount + geminiResp.UsageMetadata.ThoughtsTokenCount
usage.CacheReadInputTokens = cached
}
// 生成响应 ID
respID := responseID
if respID == "" {
respID = geminiResp.ResponseID
}
if respID == "" {
respID = "msg_" + generateRandomID()
}
return &ClaudeResponse{
ID: respID,
Type: "message",
Role: "assistant",
Model: originalModel,
Content: p.contentBlocks,
StopReason: stopReason,
Usage: usage,
}
}
func buildGroundingText(grounding *GeminiGroundingMetadata) string {
if grounding == nil {
return ""
}
var builder strings.Builder
if len(grounding.WebSearchQueries) > 0 {
_, _ = builder.WriteString("\n\n---\nWeb search queries: ")
_, _ = builder.WriteString(strings.Join(grounding.WebSearchQueries, ", "))
}
if len(grounding.GroundingChunks) > 0 {
var links []string
for i, chunk := range grounding.GroundingChunks {
if chunk.Web == nil {
continue
}
title := strings.TrimSpace(chunk.Web.Title)
if title == "" {
title = "Source"
}
uri := strings.TrimSpace(chunk.Web.URI)
if uri == "" {
uri = "#"
}
links = append(links, fmt.Sprintf("[%d] [%s](%s)", i+1, title, uri))
}
if len(links) > 0 {
_, _ = builder.WriteString("\n\nSources:\n")
_, _ = builder.WriteString(strings.Join(links, "\n"))
}
}
return builder.String()
}
// fallbackCounter 降级伪随机 ID 的全局计数器，混入 seed 避免高并发下 UnixNano 相同导致碰撞。
var fallbackCounter uint64
// generateRandomID 生成密码学安全的随机 ID
func generateRandomID() string {
const chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
id := make([]byte, 12)
randBytes := make([]byte, 12)
if _, err := rand.Read(randBytes); err != nil {
// 避免在请求路径里 panic：极端情况下熵源不可用时降级为伪随机。
// 这里主要用于生成响应/工具调用的临时 ID，安全要求不高但需尽量避免碰撞。
cnt := atomic.AddUint64(&fallbackCounter, 1)
seed := uint64(time.Now().UnixNano()) ^ cnt
seed ^= uint64(len(err.Error())) << 32
for i := range id {
seed ^= seed << 13
seed ^= seed >> 7
seed ^= seed << 17
id[i] = chars[int(seed)%len(chars)]
}
return string(id)
}
for i, b := range randBytes {
id[i] = chars[int(b)%len(chars)]
}
return string(id)
}

109
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//go:build unit
package antigravity
import (
"sync"
"sync/atomic"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// --- Task 7: 验证 generateRandomID 和降级碰撞防护 ---
func TestGenerateRandomID_Uniqueness(t *testing.T) {
seen := make(map[string]struct{}, 100)
for i := 0; i < 100; i++ {
id := generateRandomID()
require.Len(t, id, 12, "ID 长度应为 12")
_, dup := seen[id]
require.False(t, dup, "第 %d 次调用生成了重复 ID: %s", i, id)
seen[id] = struct{}{}
}
}
func TestFallbackCounter_Increments(t *testing.T) {
// 验证 fallbackCounter 的原子递增行为确保降级分支不会生成相同 seed
before := atomic.LoadUint64(&fallbackCounter)
cnt1 := atomic.AddUint64(&fallbackCounter, 1)
cnt2 := atomic.AddUint64(&fallbackCounter, 1)
require.Equal(t, before+1, cnt1, "第一次递增应为 before+1")
require.Equal(t, before+2, cnt2, "第二次递增应为 before+2")
require.NotEqual(t, cnt1, cnt2, "连续两次递增的计数器值应不同")
}
func TestFallbackCounter_ConcurrentIncrements(t *testing.T) {
// 验证并发递增的原子性 — 每次递增都应产生唯一值
const goroutines = 50
results := make([]uint64, goroutines)
var wg sync.WaitGroup
wg.Add(goroutines)
for i := 0; i < goroutines; i++ {
go func(idx int) {
defer wg.Done()
results[idx] = atomic.AddUint64(&fallbackCounter, 1)
}(i)
}
wg.Wait()
// 所有结果应唯一
seen := make(map[uint64]bool, goroutines)
for _, v := range results {
assert.False(t, seen[v], "并发递增产生了重复值: %d", v)
seen[v] = true
}
}
func TestGenerateRandomID_Charset(t *testing.T) {
const validChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
validSet := make(map[byte]struct{}, len(validChars))
for i := 0; i < len(validChars); i++ {
validSet[validChars[i]] = struct{}{}
}
for i := 0; i < 50; i++ {
id := generateRandomID()
for j := 0; j < len(id); j++ {
_, ok := validSet[id[j]]
require.True(t, ok, "ID 包含非法字符: %c (ID=%s)", id[j], id)
}
}
}
func TestGenerateRandomID_Length(t *testing.T) {
for i := 0; i < 100; i++ {
id := generateRandomID()
assert.Len(t, id, 12, "每次生成的 ID 长度应为 12")
}
}
func TestGenerateRandomID_ConcurrentUniqueness(t *testing.T) {
// 验证并发调用不会产生重复 ID
const goroutines = 100
results := make([]string, goroutines)
var wg sync.WaitGroup
wg.Add(goroutines)
for i := 0; i < goroutines; i++ {
go func(idx int) {
defer wg.Done()
results[idx] = generateRandomID()
}(i)
}
wg.Wait()
seen := make(map[string]bool, goroutines)
for _, id := range results {
assert.False(t, seen[id], "并发调用产生了重复 ID: %s", id)
seen[id] = true
}
}
func BenchmarkGenerateRandomID(b *testing.B) {
for i := 0; i < b.N; i++ {
_ = generateRandomID()
}
}

519
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/antigravity/schema_cleaner.go Normal file
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@@ -0,0 +1,519 @@
package antigravity
import (
"fmt"
"strings"
)
// CleanJSONSchema 清理 JSON Schema，移除 Antigravity/Gemini 不支持的字段
// 参考 Antigravity-Manager/src-tauri/src/proxy/common/json_schema.rs 实现
// 确保 schema 符合 JSON Schema draft 2020-12 且适配 Gemini v1internal
func CleanJSONSchema(schema map[string]any) map[string]any {
if schema == nil {
return nil
}
// 0. 预处理：展开 $ref (Schema Flattening)
// (Go map 是引用的，直接修改 schema)
flattenRefs(schema, extractDefs(schema))
// 递归清理
cleaned := cleanJSONSchemaRecursive(schema)
result, ok := cleaned.(map[string]any)
if !ok {
return nil
}
return result
}
// extractDefs 提取并移除定义的 helper
func extractDefs(schema map[string]any) map[string]any {
defs := make(map[string]any)
if d, ok := schema["$defs"].(map[string]any); ok {
for k, v := range d {
defs[k] = v
}
delete(schema, "$defs")
}
if d, ok := schema["definitions"].(map[string]any); ok {
for k, v := range d {
defs[k] = v
}
delete(schema, "definitions")
}
return defs
}
// flattenRefs 递归展开 $ref
func flattenRefs(schema map[string]any, defs map[string]any) {
if len(defs) == 0 {
return // 无需展开
}
// 检查并替换 $ref
if ref, ok := schema["$ref"].(string); ok {
delete(schema, "$ref")
// 解析引用名 (例如 #/$defs/MyType -> MyType)
parts := strings.Split(ref, "/")
refName := parts[len(parts)-1]
if defSchema, exists := defs[refName]; exists {
if defMap, ok := defSchema.(map[string]any); ok {
// 合并定义内容 (不覆盖现有 key)
for k, v := range defMap {
if _, has := schema[k]; !has {
schema[k] = deepCopy(v) // 需深拷贝避免共享引用
}
}
// 递归处理刚刚合并进来的内容
flattenRefs(schema, defs)
}
}
}
// 遍历子节点
for _, v := range schema {
if subMap, ok := v.(map[string]any); ok {
flattenRefs(subMap, defs)
} else if subArr, ok := v.([]any); ok {
for _, item := range subArr {
if itemMap, ok := item.(map[string]any); ok {
flattenRefs(itemMap, defs)
}
}
}
}
}
// deepCopy 深拷贝 (简单实现，仅针对 JSON 类型)
func deepCopy(src any) any {
if src == nil {
return nil
}
switch v := src.(type) {
case map[string]any:
dst := make(map[string]any)
for k, val := range v {
dst[k] = deepCopy(val)
}
return dst
case []any:
dst := make([]any, len(v))
for i, val := range v {
dst[i] = deepCopy(val)
}
return dst
default:
return src
}
}
// cleanJSONSchemaRecursive 递归核心清理逻辑
// 返回处理后的值 (通常是 input map，但可能修改内部结构)
func cleanJSONSchemaRecursive(value any) any {
schemaMap, ok := value.(map[string]any)
if !ok {
return value
}
// 0. [NEW] 合并 allOf
mergeAllOf(schemaMap)
// 1. [CRITICAL] 深度递归处理子项
if props, ok := schemaMap["properties"].(map[string]any); ok {
for _, v := range props {
cleanJSONSchemaRecursive(v)
}
// Go 中不需要像 Rust 那样显式处理 nullable_keys remove required，
// 因为我们在子项处理中会正确设置 type 和 description
} else if items, ok := schemaMap["items"]; ok {
// [FIX] Gemini 期望 "items" 是单个 Schema 对象（列表验证），而不是数组（元组验证）。
if itemsArr, ok := items.([]any); ok {
// 策略：将元组 [A, B] 视为 A、B 中的最佳匹配项。
best := extractBestSchemaFromUnion(itemsArr)
if best == nil {
// 回退到通用字符串
best = map[string]any{"type": "string"}
}
// 用处理后的对象替换原有数组
cleanedBest := cleanJSONSchemaRecursive(best)
schemaMap["items"] = cleanedBest
} else {
cleanJSONSchemaRecursive(items)
}
} else {
// 遍历所有值递归
for _, v := range schemaMap {
if _, isMap := v.(map[string]any); isMap {
cleanJSONSchemaRecursive(v)
} else if arr, isArr := v.([]any); isArr {
for _, item := range arr {
cleanJSONSchemaRecursive(item)
}
}
}
}
// 2. [FIX] 处理 anyOf/oneOf 联合类型: 合并属性而非直接删除
var unionArray []any
typeStr, _ := schemaMap["type"].(string)
if typeStr == "" || typeStr == "object" {
if anyOf, ok := schemaMap["anyOf"].([]any); ok {
unionArray = anyOf
} else if oneOf, ok := schemaMap["oneOf"].([]any); ok {
unionArray = oneOf
}
}
if len(unionArray) > 0 {
if bestBranch := extractBestSchemaFromUnion(unionArray); bestBranch != nil {
if bestMap, ok := bestBranch.(map[string]any); ok {
// 合并分支内容
for k, v := range bestMap {
if k == "properties" {
targetProps, _ := schemaMap["properties"].(map[string]any)
if targetProps == nil {
targetProps = make(map[string]any)
schemaMap["properties"] = targetProps
}
if sourceProps, ok := v.(map[string]any); ok {
for pk, pv := range sourceProps {
if _, exists := targetProps[pk]; !exists {
targetProps[pk] = deepCopy(pv)
}
}
}
} else if k == "required" {
targetReq, _ := schemaMap["required"].([]any)
if sourceReq, ok := v.([]any); ok {
for _, rv := range sourceReq {
// 简单的去重添加
exists := false
for _, tr := range targetReq {
if tr == rv {
exists = true
break
}
}
if !exists {
targetReq = append(targetReq, rv)
}
}
schemaMap["required"] = targetReq
}
} else if _, exists := schemaMap[k]; !exists {
schemaMap[k] = deepCopy(v)
}
}
}
}
}
// 3. [SAFETY] 检查当前对象是否为 JSON Schema 节点
looksLikeSchema := hasKey(schemaMap, "type") ||
hasKey(schemaMap, "properties") ||
hasKey(schemaMap, "items") ||
hasKey(schemaMap, "enum") ||
hasKey(schemaMap, "anyOf") ||
hasKey(schemaMap, "oneOf") ||
hasKey(schemaMap, "allOf")
if looksLikeSchema {
// 4. [ROBUST] 约束迁移
migrateConstraints(schemaMap)
// 5. [CRITICAL] 白名单过滤
allowedFields := map[string]bool{
"type": true,
"description": true,
"properties": true,
"required": true,
"items": true,
"enum": true,
"title": true,
}
for k := range schemaMap {
if !allowedFields[k] {
delete(schemaMap, k)
}
}
// 6. [SAFETY] 处理空 Object
if t, _ := schemaMap["type"].(string); t == "object" {
hasProps := false
if props, ok := schemaMap["properties"].(map[string]any); ok && len(props) > 0 {
hasProps = true
}
if !hasProps {
schemaMap["properties"] = map[string]any{
"reason": map[string]any{
"type": "string",
"description": "Reason for calling this tool",
},
}
schemaMap["required"] = []any{"reason"}
}
}
// 7. [SAFETY] Required 字段对齐
if props, ok := schemaMap["properties"].(map[string]any); ok {
if req, ok := schemaMap["required"].([]any); ok {
var validReq []any
for _, r := range req {
if rStr, ok := r.(string); ok {
if _, exists := props[rStr]; exists {
validReq = append(validReq, r)
}
}
}
if len(validReq) > 0 {
schemaMap["required"] = validReq
} else {
delete(schemaMap, "required")
}
}
}
// 8. 处理 type 字段 (Lowercase + Nullable 提取)
isEffectivelyNullable := false
if typeVal, exists := schemaMap["type"]; exists {
var selectedType string
switch v := typeVal.(type) {
case string:
lower := strings.ToLower(v)
if lower == "null" {
isEffectivelyNullable = true
selectedType = "string" // fallback
} else {
selectedType = lower
}
case []any:
// ["string", "null"]
for _, t := range v {
if ts, ok := t.(string); ok {
lower := strings.ToLower(ts)
if lower == "null" {
isEffectivelyNullable = true
} else if selectedType == "" {
selectedType = lower
}
}
}
if selectedType == "" {
selectedType = "string"
}
}
schemaMap["type"] = selectedType
} else {
// 默认 object 如果有 properties (虽然上面白名单过滤可能删了 type 如果它不在... 但 type 必在 allowlist)
// 如果没有 type，但有 properties，补一个
if hasKey(schemaMap, "properties") {
schemaMap["type"] = "object"
} else {
// 默认为 string ? or object? Gemini 通常需要明确 type
schemaMap["type"] = "object"
}
}
if isEffectivelyNullable {
desc, _ := schemaMap["description"].(string)
if !strings.Contains(desc, "nullable") {
if desc != "" {
desc += " "
}
desc += "(nullable)"
schemaMap["description"] = desc
}
}
// 9. Enum 值强制转字符串
if enumVals, ok := schemaMap["enum"].([]any); ok {
hasNonString := false
for i, val := range enumVals {
if _, isStr := val.(string); !isStr {
hasNonString = true
if val == nil {
enumVals[i] = "null"
} else {
enumVals[i] = fmt.Sprintf("%v", val)
}
}
}
// If we mandated string values, we must ensure type is string
if hasNonString {
schemaMap["type"] = "string"
}
}
}
return schemaMap
}
func hasKey(m map[string]any, k string) bool {
_, ok := m[k]
return ok
}
func migrateConstraints(m map[string]any) {
constraints := []struct {
key string
label string
}{
{"minLength", "minLen"},
{"maxLength", "maxLen"},
{"pattern", "pattern"},
{"minimum", "min"},
{"maximum", "max"},
{"multipleOf", "multipleOf"},
{"exclusiveMinimum", "exclMin"},
{"exclusiveMaximum", "exclMax"},
{"minItems", "minItems"},
{"maxItems", "maxItems"},
{"propertyNames", "propertyNames"},
{"format", "format"},
}
var hints []string
for _, c := range constraints {
if val, ok := m[c.key]; ok && val != nil {
hints = append(hints, fmt.Sprintf("%s: %v", c.label, val))
}
}
if len(hints) > 0 {
suffix := fmt.Sprintf(" [Constraint: %s]", strings.Join(hints, ", "))
desc, _ := m["description"].(string)
if !strings.Contains(desc, suffix) {
m["description"] = desc + suffix
}
}
}
// mergeAllOf 合并 allOf
func mergeAllOf(m map[string]any) {
allOf, ok := m["allOf"].([]any)
if !ok {
return
}
delete(m, "allOf")
mergedProps := make(map[string]any)
mergedReq := make(map[string]bool)
otherFields := make(map[string]any)
for _, sub := range allOf {
if subMap, ok := sub.(map[string]any); ok {
// Props
if props, ok := subMap["properties"].(map[string]any); ok {
for k, v := range props {
mergedProps[k] = v
}
}
// Required
if reqs, ok := subMap["required"].([]any); ok {
for _, r := range reqs {
if s, ok := r.(string); ok {
mergedReq[s] = true
}
}
}
// Others
for k, v := range subMap {
if k != "properties" && k != "required" && k != "allOf" {
if _, exists := otherFields[k]; !exists {
otherFields[k] = v
}
}
}
}
}
// Apply
for k, v := range otherFields {
if _, exists := m[k]; !exists {
m[k] = v
}
}
if len(mergedProps) > 0 {
existProps, _ := m["properties"].(map[string]any)
if existProps == nil {
existProps = make(map[string]any)
m["properties"] = existProps
}
for k, v := range mergedProps {
if _, exists := existProps[k]; !exists {
existProps[k] = v
}
}
}
if len(mergedReq) > 0 {
existReq, _ := m["required"].([]any)
var validReqs []any
for _, r := range existReq {
if s, ok := r.(string); ok {
validReqs = append(validReqs, s)
delete(mergedReq, s) // already exists
}
}
// append new
for r := range mergedReq {
validReqs = append(validReqs, r)
}
m["required"] = validReqs
}
}
// extractBestSchemaFromUnion 从 anyOf/oneOf 中选取最佳分支
func extractBestSchemaFromUnion(unionArray []any) any {
var bestOption any
bestScore := -1
for _, item := range unionArray {
score := scoreSchemaOption(item)
if score > bestScore {
bestScore = score
bestOption = item
}
}
return bestOption
}
func scoreSchemaOption(val any) int {
m, ok := val.(map[string]any)
if !ok {
return 0
}
typeStr, _ := m["type"].(string)
if hasKey(m, "properties") || typeStr == "object" {
return 3
}
if hasKey(m, "items") || typeStr == "array" {
return 2
}
if typeStr != "" && typeStr != "null" {
return 1
}
return 0
}
// DeepCleanUndefined 深度清理值为 "[undefined]" 的字段
func DeepCleanUndefined(value any) {
if value == nil {
return
}
switch v := value.(type) {
case map[string]any:
for k, val := range v {
if s, ok := val.(string); ok && s == "[undefined]" {
delete(v, k)
continue
}
DeepCleanUndefined(val)
}
case []any:
for _, val := range v {
DeepCleanUndefined(val)
}
}
}

520
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/antigravity/stream_transformer.go Normal file
View File

@@ -0,0 +1,520 @@
package antigravity
import (
"bytes"
"encoding/json"
"fmt"
"log"
"strings"
)
// BlockType 内容块类型
type BlockType int
const (
BlockTypeNone BlockType = iota
BlockTypeText
BlockTypeThinking
BlockTypeFunction
)
// StreamingProcessor 流式响应处理器
type StreamingProcessor struct {
blockType BlockType
blockIndex int
messageStartSent bool
messageStopSent bool
usedTool bool
pendingSignature string
trailingSignature string
originalModel string
webSearchQueries []string
groundingChunks []GeminiGroundingChunk
// 累计 usage
inputTokens int
outputTokens int
cacheReadTokens int
}
// NewStreamingProcessor 创建流式响应处理器
func NewStreamingProcessor(originalModel string) *StreamingProcessor {
return &StreamingProcessor{
blockType: BlockTypeNone,
originalModel: originalModel,
}
}
// ProcessLine 处理 SSE 行，返回 Claude SSE 事件
func (p *StreamingProcessor) ProcessLine(line string) []byte {
line = strings.TrimSpace(line)
if line == "" || !strings.HasPrefix(line, "data:") {
return nil
}
data := strings.TrimSpace(strings.TrimPrefix(line, "data:"))
if data == "" || data == "[DONE]" {
return nil
}
// 解包 v1internal 响应
var v1Resp V1InternalResponse
if err := json.Unmarshal([]byte(data), &v1Resp); err != nil {
// 尝试直接解析为 GeminiResponse
var directResp GeminiResponse
if err2 := json.Unmarshal([]byte(data), &directResp); err2 != nil {
return nil
}
v1Resp.Response = directResp
v1Resp.ResponseID = directResp.ResponseID
v1Resp.ModelVersion = directResp.ModelVersion
}
geminiResp := &v1Resp.Response
var result bytes.Buffer
// 发送 message_start
if !p.messageStartSent {
_, _ = result.Write(p.emitMessageStart(&v1Resp))
}
// 更新 usage
// 注意：Gemini 的 promptTokenCount 包含 cachedContentTokenCount，
// 但 Claude 的 input_tokens 不包含 cache_read_input_tokens，需要减去
if geminiResp.UsageMetadata != nil {
cached := geminiResp.UsageMetadata.CachedContentTokenCount
p.inputTokens = geminiResp.UsageMetadata.PromptTokenCount - cached
p.outputTokens = geminiResp.UsageMetadata.CandidatesTokenCount + geminiResp.UsageMetadata.ThoughtsTokenCount
p.cacheReadTokens = cached
}
// 处理 parts
if len(geminiResp.Candidates) > 0 && geminiResp.Candidates[0].Content != nil {
for _, part := range geminiResp.Candidates[0].Content.Parts {
_, _ = result.Write(p.processPart(&part))
}
}
if len(geminiResp.Candidates) > 0 {
p.captureGrounding(geminiResp.Candidates[0].GroundingMetadata)
}
// 检查是否结束
if len(geminiResp.Candidates) > 0 {
finishReason := geminiResp.Candidates[0].FinishReason
if finishReason == "MALFORMED_FUNCTION_CALL" {
log.Printf("[Antigravity] MALFORMED_FUNCTION_CALL detected in stream for model %s", p.originalModel)
if geminiResp.Candidates[0].Content != nil {
if b, err := json.Marshal(geminiResp.Candidates[0].Content); err == nil {
log.Printf("[Antigravity] Malformed content: %s", string(b))
}
}
}
if finishReason != "" {
_, _ = result.Write(p.emitFinish(finishReason))
}
}
return result.Bytes()
}
// Finish 结束处理，返回最终事件和用量。
// 若整个流未收到任何可解析的上游数据（messageStartSent == false），
// 则不补发任何结束事件，防止客户端收到没有 message_start 的残缺流。
func (p *StreamingProcessor) Finish() ([]byte, *ClaudeUsage) {
usage := &ClaudeUsage{
InputTokens: p.inputTokens,
OutputTokens: p.outputTokens,
CacheReadInputTokens: p.cacheReadTokens,
}
if !p.messageStartSent {
return nil, usage
}
var result bytes.Buffer
if !p.messageStopSent {
_, _ = result.Write(p.emitFinish(""))
}
return result.Bytes(), usage
}
// MessageStartSent 报告流中是否已发出过 message_start 事件（即是否收到过有效的上游数据）
func (p *StreamingProcessor) MessageStartSent() bool {
return p.messageStartSent
}
// emitMessageStart 发送 message_start 事件
func (p *StreamingProcessor) emitMessageStart(v1Resp *V1InternalResponse) []byte {
if p.messageStartSent {
return nil
}
usage := ClaudeUsage{}
if v1Resp.Response.UsageMetadata != nil {
cached := v1Resp.Response.UsageMetadata.CachedContentTokenCount
usage.InputTokens = v1Resp.Response.UsageMetadata.PromptTokenCount - cached
usage.OutputTokens = v1Resp.Response.UsageMetadata.CandidatesTokenCount + v1Resp.Response.UsageMetadata.ThoughtsTokenCount
usage.CacheReadInputTokens = cached
}
responseID := v1Resp.ResponseID
if responseID == "" {
responseID = v1Resp.Response.ResponseID
}
if responseID == "" {
responseID = "msg_" + generateRandomID()
}
message := map[string]any{
"id": responseID,
"type": "message",
"role": "assistant",
"content": []any{},
"model": p.originalModel,
"stop_reason": nil,
"stop_sequence": nil,
"usage": usage,
}
event := map[string]any{
"type": "message_start",
"message": message,
}
p.messageStartSent = true
return p.formatSSE("message_start", event)
}
// processPart 处理单个 part
func (p *StreamingProcessor) processPart(part *GeminiPart) []byte {
var result bytes.Buffer
signature := part.ThoughtSignature
// 1. FunctionCall 处理
if part.FunctionCall != nil {
// 先处理 trailingSignature
if p.trailingSignature != "" {
_, _ = result.Write(p.endBlock())
_, _ = result.Write(p.emitEmptyThinkingWithSignature(p.trailingSignature))
p.trailingSignature = ""
}
_, _ = result.Write(p.processFunctionCall(part.FunctionCall, signature))
return result.Bytes()
}
// 2. Text 处理
if part.Text != "" || part.Thought {
if part.Thought {
_, _ = result.Write(p.processThinking(part.Text, signature))
} else {
_, _ = result.Write(p.processText(part.Text, signature))
}
}
// 3. InlineData (Image) 处理
if part.InlineData != nil && part.InlineData.Data != "" {
markdownImg := fmt.Sprintf("![image](data:%s;base64,%s)",
part.InlineData.MimeType, part.InlineData.Data)
_, _ = result.Write(p.processText(markdownImg, ""))
}
return result.Bytes()
}
func (p *StreamingProcessor) captureGrounding(grounding *GeminiGroundingMetadata) {
if grounding == nil {
return
}
if len(grounding.WebSearchQueries) > 0 && len(p.webSearchQueries) == 0 {
p.webSearchQueries = append([]string(nil), grounding.WebSearchQueries...)
}
if len(grounding.GroundingChunks) > 0 && len(p.groundingChunks) == 0 {
p.groundingChunks = append([]GeminiGroundingChunk(nil), grounding.GroundingChunks...)
}
}
// processThinking 处理 thinking
func (p *StreamingProcessor) processThinking(text, signature string) []byte {
var result bytes.Buffer
// 处理之前的 trailingSignature
if p.trailingSignature != "" {
_, _ = result.Write(p.endBlock())
_, _ = result.Write(p.emitEmptyThinkingWithSignature(p.trailingSignature))
p.trailingSignature = ""
}
// 开始或继续 thinking 块
if p.blockType != BlockTypeThinking {
_, _ = result.Write(p.startBlock(BlockTypeThinking, map[string]any{
"type": "thinking",
"thinking": "",
}))
}
if text != "" {
_, _ = result.Write(p.emitDelta("thinking_delta", map[string]any{
"thinking": text,
}))
}
// 暂存签名
if signature != "" {
p.pendingSignature = signature
}
return result.Bytes()
}
// processText 处理普通 text
func (p *StreamingProcessor) processText(text, signature string) []byte {
var result bytes.Buffer
// 空 text 带签名 - 暂存
if text == "" {
if signature != "" {
p.trailingSignature = signature
}
return nil
}
// 处理之前的 trailingSignature
if p.trailingSignature != "" {
_, _ = result.Write(p.endBlock())
_, _ = result.Write(p.emitEmptyThinkingWithSignature(p.trailingSignature))
p.trailingSignature = ""
}
// 非空 text 带签名 - 特殊处理
if signature != "" {
_, _ = result.Write(p.startBlock(BlockTypeText, map[string]any{
"type": "text",
"text": "",
}))
_, _ = result.Write(p.emitDelta("text_delta", map[string]any{
"text": text,
}))
_, _ = result.Write(p.endBlock())
_, _ = result.Write(p.emitEmptyThinkingWithSignature(signature))
return result.Bytes()
}
// 普通 text (无签名)
if p.blockType != BlockTypeText {
_, _ = result.Write(p.startBlock(BlockTypeText, map[string]any{
"type": "text",
"text": "",
}))
}
_, _ = result.Write(p.emitDelta("text_delta", map[string]any{
"text": text,
}))
return result.Bytes()
}
// processFunctionCall 处理 function call
func (p *StreamingProcessor) processFunctionCall(fc *GeminiFunctionCall, signature string) []byte {
var result bytes.Buffer
p.usedTool = true
toolID := fc.ID
if toolID == "" {
toolID = fmt.Sprintf("%s-%s", fc.Name, generateRandomID())
}
toolUse := map[string]any{
"type": "tool_use",
"id": toolID,
"name": fc.Name,
"input": map[string]any{},
}
if signature != "" {
toolUse["signature"] = signature
}
_, _ = result.Write(p.startBlock(BlockTypeFunction, toolUse))
// 发送 input_json_delta
if fc.Args != nil {
argsJSON, _ := json.Marshal(fc.Args)
_, _ = result.Write(p.emitDelta("input_json_delta", map[string]any{
"partial_json": string(argsJSON),
}))
}
_, _ = result.Write(p.endBlock())
return result.Bytes()
}
// startBlock 开始新的内容块
func (p *StreamingProcessor) startBlock(blockType BlockType, contentBlock map[string]any) []byte {
var result bytes.Buffer
if p.blockType != BlockTypeNone {
_, _ = result.Write(p.endBlock())
}
event := map[string]any{
"type": "content_block_start",
"index": p.blockIndex,
"content_block": contentBlock,
}
_, _ = result.Write(p.formatSSE("content_block_start", event))
p.blockType = blockType
return result.Bytes()
}
// endBlock 结束当前内容块
func (p *StreamingProcessor) endBlock() []byte {
if p.blockType == BlockTypeNone {
return nil
}
var result bytes.Buffer
// Thinking 块结束时发送暂存的签名
if p.blockType == BlockTypeThinking && p.pendingSignature != "" {
_, _ = result.Write(p.emitDelta("signature_delta", map[string]any{
"signature": p.pendingSignature,
}))
p.pendingSignature = ""
}
event := map[string]any{
"type": "content_block_stop",
"index": p.blockIndex,
}
_, _ = result.Write(p.formatSSE("content_block_stop", event))
p.blockIndex++
p.blockType = BlockTypeNone
return result.Bytes()
}
// emitDelta 发送 delta 事件
func (p *StreamingProcessor) emitDelta(deltaType string, deltaContent map[string]any) []byte {
delta := map[string]any{
"type": deltaType,
}
for k, v := range deltaContent {
delta[k] = v
}
event := map[string]any{
"type": "content_block_delta",
"index": p.blockIndex,
"delta": delta,
}
return p.formatSSE("content_block_delta", event)
}
// emitEmptyThinkingWithSignature 发送空 thinking 块承载签名
func (p *StreamingProcessor) emitEmptyThinkingWithSignature(signature string) []byte {
var result bytes.Buffer
_, _ = result.Write(p.startBlock(BlockTypeThinking, map[string]any{
"type": "thinking",
"thinking": "",
}))
_, _ = result.Write(p.emitDelta("thinking_delta", map[string]any{
"thinking": "",
}))
_, _ = result.Write(p.emitDelta("signature_delta", map[string]any{
"signature": signature,
}))
_, _ = result.Write(p.endBlock())
return result.Bytes()
}
// emitFinish 发送结束事件
func (p *StreamingProcessor) emitFinish(finishReason string) []byte {
var result bytes.Buffer
// 关闭最后一个块
_, _ = result.Write(p.endBlock())
// 处理 trailingSignature
if p.trailingSignature != "" {
_, _ = result.Write(p.emitEmptyThinkingWithSignature(p.trailingSignature))
p.trailingSignature = ""
}
if len(p.webSearchQueries) > 0 || len(p.groundingChunks) > 0 {
groundingText := buildGroundingText(&GeminiGroundingMetadata{
WebSearchQueries: p.webSearchQueries,
GroundingChunks: p.groundingChunks,
})
if groundingText != "" {
_, _ = result.Write(p.startBlock(BlockTypeText, map[string]any{
"type": "text",
"text": "",
}))
_, _ = result.Write(p.emitDelta("text_delta", map[string]any{
"text": groundingText,
}))
_, _ = result.Write(p.endBlock())
}
}
// 确定 stop_reason
stopReason := "end_turn"
if p.usedTool {
stopReason = "tool_use"
} else if finishReason == "MAX_TOKENS" {
stopReason = "max_tokens"
}
usage := ClaudeUsage{
InputTokens: p.inputTokens,
OutputTokens: p.outputTokens,
CacheReadInputTokens: p.cacheReadTokens,
}
deltaEvent := map[string]any{
"type": "message_delta",
"delta": map[string]any{
"stop_reason": stopReason,
"stop_sequence": nil,
},
"usage": usage,
}
_, _ = result.Write(p.formatSSE("message_delta", deltaEvent))
if !p.messageStopSent {
stopEvent := map[string]any{
"type": "message_stop",
}
_, _ = result.Write(p.formatSSE("message_stop", stopEvent))
p.messageStopSent = true
}
return result.Bytes()
}
// formatSSE 格式化 SSE 事件
func (p *StreamingProcessor) formatSSE(eventType string, data any) []byte {
jsonData, err := json.Marshal(data)
if err != nil {
return nil
}
return []byte(fmt.Sprintf("event: %s\ndata: %s\n\n", eventType, string(jsonData)))
}

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package apicompat
import (
"encoding/json"
"fmt"
"strings"
)
// AnthropicToResponses converts an Anthropic Messages request directly into
// a Responses API request. This preserves fields that would be lost in a
// Chat Completions intermediary round-trip (e.g. thinking, cache_control,
// structured system prompts).
func AnthropicToResponses(req *AnthropicRequest) (*ResponsesRequest, error) {
input, err := convertAnthropicToResponsesInput(req.System, req.Messages)
if err != nil {
return nil, err
}
inputJSON, err := json.Marshal(input)
if err != nil {
return nil, err
}
out := &ResponsesRequest{
Model: req.Model,
Input: inputJSON,
Temperature: req.Temperature,
TopP: req.TopP,
Stream: req.Stream,
Include: []string{"reasoning.encrypted_content"},
}
storeFalse := false
out.Store = &storeFalse
if req.MaxTokens > 0 {
v := req.MaxTokens
if v < minMaxOutputTokens {
v = minMaxOutputTokens
}
out.MaxOutputTokens = &v
}
if len(req.Tools) > 0 {
out.Tools = convertAnthropicToolsToResponses(req.Tools)
}
// Determine reasoning effort: only output_config.effort controls the
// level; thinking.type is ignored. Default is xhigh when unset.
// Anthropic levels map to OpenAI: low→low, medium→high, high→xhigh.
effort := "high" // default → maps to xhigh
if req.OutputConfig != nil && req.OutputConfig.Effort != "" {
effort = req.OutputConfig.Effort
}
out.Reasoning = &ResponsesReasoning{
Effort: mapAnthropicEffortToResponses(effort),
Summary: "auto",
}
// Convert tool_choice
if len(req.ToolChoice) > 0 {
tc, err := convertAnthropicToolChoiceToResponses(req.ToolChoice)
if err != nil {
return nil, fmt.Errorf("convert tool_choice: %w", err)
}
out.ToolChoice = tc
}
return out, nil
}
// convertAnthropicToolChoiceToResponses maps Anthropic tool_choice to Responses format.
//
// {"type":"auto"} → "auto"
// {"type":"any"} → "required"
// {"type":"none"} → "none"
// {"type":"tool","name":"X"} → {"type":"function","function":{"name":"X"}}
func convertAnthropicToolChoiceToResponses(raw json.RawMessage) (json.RawMessage, error) {
var tc struct {
Type string `json:"type"`
Name string `json:"name"`
}
if err := json.Unmarshal(raw, &tc); err != nil {
return nil, err
}
switch tc.Type {
case "auto":
return json.Marshal("auto")
case "any":
return json.Marshal("required")
case "none":
return json.Marshal("none")
case "tool":
return json.Marshal(map[string]any{
"type": "function",
"function": map[string]string{"name": tc.Name},
})
default:
// Pass through unknown types as-is
return raw, nil
}
}
// convertAnthropicToResponsesInput builds the Responses API input items array
// from the Anthropic system field and message list.
func convertAnthropicToResponsesInput(system json.RawMessage, msgs []AnthropicMessage) ([]ResponsesInputItem, error) {
var out []ResponsesInputItem
// System prompt → system role input item.
if len(system) > 0 {
sysText, err := parseAnthropicSystemPrompt(system)
if err != nil {
return nil, err
}
if sysText != "" {
content, _ := json.Marshal(sysText)
out = append(out, ResponsesInputItem{
Role: "system",
Content: content,
})
}
}
for _, m := range msgs {
items, err := anthropicMsgToResponsesItems(m)
if err != nil {
return nil, err
}
out = append(out, items...)
}
return out, nil
}
// parseAnthropicSystemPrompt handles the Anthropic system field which can be
// a plain string or an array of text blocks.
func parseAnthropicSystemPrompt(raw json.RawMessage) (string, error) {
var s string
if err := json.Unmarshal(raw, &s); err == nil {
return s, nil
}
var blocks []AnthropicContentBlock
if err := json.Unmarshal(raw, &blocks); err != nil {
return "", err
}
var parts []string
for _, b := range blocks {
if b.Type == "text" && b.Text != "" {
parts = append(parts, b.Text)
}
}
return strings.Join(parts, "\n\n"), nil
}
// anthropicMsgToResponsesItems converts a single Anthropic message into one
// or more Responses API input items.
func anthropicMsgToResponsesItems(m AnthropicMessage) ([]ResponsesInputItem, error) {
switch m.Role {
case "user":
return anthropicUserToResponses(m.Content)
case "assistant":
return anthropicAssistantToResponses(m.Content)
default:
return anthropicUserToResponses(m.Content)
}
}
// anthropicUserToResponses handles an Anthropic user message. Content can be a
// plain string or an array of blocks. tool_result blocks are extracted into
// function_call_output items. Image blocks are converted to input_image parts.
func anthropicUserToResponses(raw json.RawMessage) ([]ResponsesInputItem, error) {
// Try plain string.
var s string
if err := json.Unmarshal(raw, &s); err == nil {
content, _ := json.Marshal(s)
return []ResponsesInputItem{{Role: "user", Content: content}}, nil
}
var blocks []AnthropicContentBlock
if err := json.Unmarshal(raw, &blocks); err != nil {
return nil, err
}
var out []ResponsesInputItem
var toolResultImageParts []ResponsesContentPart
// Extract tool_result blocks → function_call_output items.
// Images inside tool_results are extracted separately because the
// Responses API function_call_output.output only accepts strings.
for _, b := range blocks {
if b.Type != "tool_result" {
continue
}
outputText, imageParts := convertToolResultOutput(b)
out = append(out, ResponsesInputItem{
Type: "function_call_output",
CallID: toResponsesCallID(b.ToolUseID),
Output: outputText,
})
toolResultImageParts = append(toolResultImageParts, imageParts...)
}
// Remaining text + image blocks → user message with content parts.
// Also include images extracted from tool_results so the model can see them.
var parts []ResponsesContentPart
for _, b := range blocks {
switch b.Type {
case "text":
if b.Text != "" {
parts = append(parts, ResponsesContentPart{Type: "input_text", Text: b.Text})
}
case "image":
if uri := anthropicImageToDataURI(b.Source); uri != "" {
parts = append(parts, ResponsesContentPart{Type: "input_image", ImageURL: uri})
}
}
}
parts = append(parts, toolResultImageParts...)
if len(parts) > 0 {
content, err := json.Marshal(parts)
if err != nil {
return nil, err
}
out = append(out, ResponsesInputItem{Role: "user", Content: content})
}
return out, nil
}
// anthropicAssistantToResponses handles an Anthropic assistant message.
// Text content → assistant message with output_text parts.
// tool_use blocks → function_call items.
// thinking blocks → ignored (OpenAI doesn't accept them as input).
func anthropicAssistantToResponses(raw json.RawMessage) ([]ResponsesInputItem, error) {
// Try plain string.
var s string
if err := json.Unmarshal(raw, &s); err == nil {
parts := []ResponsesContentPart{{Type: "output_text", Text: s}}
partsJSON, err := json.Marshal(parts)
if err != nil {
return nil, err
}
return []ResponsesInputItem{{Role: "assistant", Content: partsJSON}}, nil
}
var blocks []AnthropicContentBlock
if err := json.Unmarshal(raw, &blocks); err != nil {
return nil, err
}
var items []ResponsesInputItem
// Text content → assistant message with output_text content parts.
text := extractAnthropicTextFromBlocks(blocks)
if text != "" {
parts := []ResponsesContentPart{{Type: "output_text", Text: text}}
partsJSON, err := json.Marshal(parts)
if err != nil {
return nil, err
}
items = append(items, ResponsesInputItem{Role: "assistant", Content: partsJSON})
}
// tool_use → function_call items.
for _, b := range blocks {
if b.Type != "tool_use" {
continue
}
args := "{}"
if len(b.Input) > 0 {
args = string(b.Input)
}
fcID := toResponsesCallID(b.ID)
items = append(items, ResponsesInputItem{
Type: "function_call",
CallID: fcID,
Name: b.Name,
Arguments: args,
})
}
return items, nil
}
// toResponsesCallID converts an Anthropic tool ID (toolu_xxx / call_xxx) to a
// Responses API function_call ID that starts with "fc_".
func toResponsesCallID(id string) string {
if strings.HasPrefix(id, "fc_") {
return id
}
return "fc_" + id
}
// fromResponsesCallID reverses toResponsesCallID, stripping the "fc_" prefix
// that was added during request conversion.
func fromResponsesCallID(id string) string {
if after, ok := strings.CutPrefix(id, "fc_"); ok {
// Only strip if the remainder doesn't look like it was already "fc_" prefixed.
// E.g. "fc_toolu_xxx" → "toolu_xxx", "fc_call_xxx" → "call_xxx"
if strings.HasPrefix(after, "toolu_") || strings.HasPrefix(after, "call_") {
return after
}
}
return id
}
// anthropicImageToDataURI converts an AnthropicImageSource to a data URI string.
// Returns "" if the source is nil or has no data.
func anthropicImageToDataURI(src *AnthropicImageSource) string {
if src == nil || src.Data == "" {
return ""
}
mediaType := src.MediaType
if mediaType == "" {
mediaType = "image/png"
}
return "data:" + mediaType + ";base64," + src.Data
}
// convertToolResultOutput extracts text and image content from a tool_result
// block. Returns the text as a string for the function_call_output Output
// field, plus any image parts that must be sent in a separate user message
// (the Responses API output field only accepts strings).
func convertToolResultOutput(b AnthropicContentBlock) (string, []ResponsesContentPart) {
if len(b.Content) == 0 {
return "(empty)", nil
}
// Try plain string content.
var s string
if err := json.Unmarshal(b.Content, &s); err == nil {
if s == "" {
s = "(empty)"
}
return s, nil
}
// Array of content blocks — may contain text and/or images.
var inner []AnthropicContentBlock
if err := json.Unmarshal(b.Content, &inner); err != nil {
return "(empty)", nil
}
// Separate text (for function_call_output) from images (for user message).
var textParts []string
var imageParts []ResponsesContentPart
for _, ib := range inner {
switch ib.Type {
case "text":
if ib.Text != "" {
textParts = append(textParts, ib.Text)
}
case "image":
if uri := anthropicImageToDataURI(ib.Source); uri != "" {
imageParts = append(imageParts, ResponsesContentPart{Type: "input_image", ImageURL: uri})
}
}
}
text := strings.Join(textParts, "\n\n")
if text == "" {
text = "(empty)"
}
return text, imageParts
}
// extractAnthropicTextFromBlocks joins all text blocks, ignoring thinking/
// tool_use/tool_result blocks.
func extractAnthropicTextFromBlocks(blocks []AnthropicContentBlock) string {
var parts []string
for _, b := range blocks {
if b.Type == "text" && b.Text != "" {
parts = append(parts, b.Text)
}
}
return strings.Join(parts, "\n\n")
}
// mapAnthropicEffortToResponses converts Anthropic reasoning effort levels to
// OpenAI Responses API effort levels.
//
// low → low
// medium → high
// high → xhigh
func mapAnthropicEffortToResponses(effort string) string {
switch effort {
case "medium":
return "high"
case "high":
return "xhigh"
default:
return effort // "low" and any unknown values pass through unchanged
}
}
// convertAnthropicToolsToResponses maps Anthropic tool definitions to
// Responses API tools. Server-side tools like web_search are mapped to their
// OpenAI equivalents; regular tools become function tools.
func convertAnthropicToolsToResponses(tools []AnthropicTool) []ResponsesTool {
var out []ResponsesTool
for _, t := range tools {
// Anthropic server tools like "web_search_20250305" → OpenAI {"type":"web_search"}
if strings.HasPrefix(t.Type, "web_search") {
out = append(out, ResponsesTool{Type: "web_search"})
continue
}
out = append(out, ResponsesTool{
Type: "function",
Name: t.Name,
Description: t.Description,
Parameters: t.InputSchema,
})
}
return out
}

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llm-gateway-competitors/sub2api-tar/backend/internal/pkg/apicompat/chatcompletions_responses_test.go Normal file
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package apicompat
import (
"encoding/json"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// ---------------------------------------------------------------------------
// ChatCompletionsToResponses tests
// ---------------------------------------------------------------------------
func TestChatCompletionsToResponses_BasicText(t *testing.T) {
req := &ChatCompletionsRequest{
Model: "gpt-4o",
Messages: []ChatMessage{
{Role: "user", Content: json.RawMessage(`"Hello"`)},
},
}
resp, err := ChatCompletionsToResponses(req)
require.NoError(t, err)
assert.Equal(t, "gpt-4o", resp.Model)
assert.True(t, resp.Stream) // always forced true
assert.False(t, *resp.Store)
var items []ResponsesInputItem
require.NoError(t, json.Unmarshal(resp.Input, &items))
require.Len(t, items, 1)
assert.Equal(t, "user", items[0].Role)
}
func TestChatCompletionsToResponses_SystemMessage(t *testing.T) {
req := &ChatCompletionsRequest{
Model: "gpt-4o",
Messages: []ChatMessage{
{Role: "system", Content: json.RawMessage(`"You are helpful."`)},
{Role: "user", Content: json.RawMessage(`"Hi"`)},
},
}
resp, err := ChatCompletionsToResponses(req)
require.NoError(t, err)
var items []ResponsesInputItem
require.NoError(t, json.Unmarshal(resp.Input, &items))
require.Len(t, items, 2)
assert.Equal(t, "system", items[0].Role)
assert.Equal(t, "user", items[1].Role)
}
func TestChatCompletionsToResponses_ToolCalls(t *testing.T) {
req := &ChatCompletionsRequest{
Model: "gpt-4o",
Messages: []ChatMessage{
{Role: "user", Content: json.RawMessage(`"Call the function"`)},
{
Role: "assistant",
ToolCalls: []ChatToolCall{
{
ID: "call_1",
Type: "function",
Function: ChatFunctionCall{
Name: "ping",
Arguments: `{"host":"example.com"}`,
},
},
},
},
{
Role: "tool",
ToolCallID: "call_1",
Content: json.RawMessage(`"pong"`),
},
},
Tools: []ChatTool{
{
Type: "function",
Function: &ChatFunction{
Name: "ping",
Description: "Ping a host",
Parameters: json.RawMessage(`{"type":"object"}`),
},
},
},
}
resp, err := ChatCompletionsToResponses(req)
require.NoError(t, err)
var items []ResponsesInputItem
require.NoError(t, json.Unmarshal(resp.Input, &items))
// user + function_call + function_call_output = 3
// (assistant message with empty content + tool_calls → only function_call items emitted)
require.Len(t, items, 3)
// Check function_call item
assert.Equal(t, "function_call", items[1].Type)
assert.Equal(t, "call_1", items[1].CallID)
assert.Empty(t, items[1].ID)
assert.Equal(t, "ping", items[1].Name)
// Check function_call_output item
assert.Equal(t, "function_call_output", items[2].Type)
assert.Equal(t, "call_1", items[2].CallID)
assert.Equal(t, "pong", items[2].Output)
// Check tools
require.Len(t, resp.Tools, 1)
assert.Equal(t, "function", resp.Tools[0].Type)
assert.Equal(t, "ping", resp.Tools[0].Name)
}
func TestChatCompletionsToResponses_MaxTokens(t *testing.T) {
t.Run("max_tokens", func(t *testing.T) {
maxTokens := 100
req := &ChatCompletionsRequest{
Model: "gpt-4o",
MaxTokens: &maxTokens,
Messages: []ChatMessage{{Role: "user", Content: json.RawMessage(`"Hi"`)}},
}
resp, err := ChatCompletionsToResponses(req)
require.NoError(t, err)
require.NotNil(t, resp.MaxOutputTokens)
// Below minMaxOutputTokens (128), should be clamped
assert.Equal(t, minMaxOutputTokens, *resp.MaxOutputTokens)
})
t.Run("max_completion_tokens_preferred", func(t *testing.T) {
maxTokens := 100
maxCompletion := 500
req := &ChatCompletionsRequest{
Model: "gpt-4o",
MaxTokens: &maxTokens,
MaxCompletionTokens: &maxCompletion,
Messages: []ChatMessage{{Role: "user", Content: json.RawMessage(`"Hi"`)}},
}
resp, err := ChatCompletionsToResponses(req)
require.NoError(t, err)
require.NotNil(t, resp.MaxOutputTokens)
assert.Equal(t, 500, *resp.MaxOutputTokens)
})
}
func TestChatCompletionsToResponses_ReasoningEffort(t *testing.T) {
req := &ChatCompletionsRequest{
Model: "gpt-4o",
ReasoningEffort: "high",
Messages: []ChatMessage{{Role: "user", Content: json.RawMessage(`"Hi"`)}},
}
resp, err := ChatCompletionsToResponses(req)
require.NoError(t, err)
require.NotNil(t, resp.Reasoning)
assert.Equal(t, "high", resp.Reasoning.Effort)
assert.Equal(t, "auto", resp.Reasoning.Summary)
}
func TestChatCompletionsToResponses_ImageURL(t *testing.T) {
content := `[{"type":"text","text":"Describe this"},{"type":"image_url","image_url":{"url":"data:image/png;base64,abc123"}}]`
req := &ChatCompletionsRequest{
Model: "gpt-4o",
Messages: []ChatMessage{
{Role: "user", Content: json.RawMessage(content)},
},
}
resp, err := ChatCompletionsToResponses(req)
require.NoError(t, err)
var items []ResponsesInputItem
require.NoError(t, json.Unmarshal(resp.Input, &items))
require.Len(t, items, 1)
var parts []ResponsesContentPart
require.NoError(t, json.Unmarshal(items[0].Content, &parts))
require.Len(t, parts, 2)
assert.Equal(t, "input_text", parts[0].Type)
assert.Equal(t, "Describe this", parts[0].Text)
assert.Equal(t, "input_image", parts[1].Type)
assert.Equal(t, "data:image/png;base64,abc123", parts[1].ImageURL)
}
func TestChatCompletionsToResponses_LegacyFunctions(t *testing.T) {
req := &ChatCompletionsRequest{
Model: "gpt-4o",
Messages: []ChatMessage{
{Role: "user", Content: json.RawMessage(`"Hi"`)},
},
Functions: []ChatFunction{
{
Name: "get_weather",
Description: "Get weather",
Parameters: json.RawMessage(`{"type":"object"}`),
},
},
FunctionCall: json.RawMessage(`{"name":"get_weather"}`),
}
resp, err := ChatCompletionsToResponses(req)
require.NoError(t, err)
require.Len(t, resp.Tools, 1)
assert.Equal(t, "function", resp.Tools[0].Type)
assert.Equal(t, "get_weather", resp.Tools[0].Name)
// tool_choice should be converted
require.NotNil(t, resp.ToolChoice)
var tc map[string]any
require.NoError(t, json.Unmarshal(resp.ToolChoice, &tc))
assert.Equal(t, "function", tc["type"])
}
func TestChatCompletionsToResponses_ServiceTier(t *testing.T) {
req := &ChatCompletionsRequest{
Model: "gpt-4o",
ServiceTier: "flex",
Messages: []ChatMessage{{Role: "user", Content: json.RawMessage(`"Hi"`)}},
}
resp, err := ChatCompletionsToResponses(req)
require.NoError(t, err)
assert.Equal(t, "flex", resp.ServiceTier)
}
func TestChatCompletionsToResponses_AssistantWithTextAndToolCalls(t *testing.T) {
req := &ChatCompletionsRequest{
Model: "gpt-4o",
Messages: []ChatMessage{
{Role: "user", Content: json.RawMessage(`"Do something"`)},
{
Role: "assistant",
Content: json.RawMessage(`"Let me call a function."`),
ToolCalls: []ChatToolCall{
{
ID: "call_abc",
Type: "function",
Function: ChatFunctionCall{
Name: "do_thing",
Arguments: `{}`,
},
},
},
},
},
}
resp, err := ChatCompletionsToResponses(req)
require.NoError(t, err)
var items []ResponsesInputItem
require.NoError(t, json.Unmarshal(resp.Input, &items))
// user + assistant message (with text) + function_call
require.Len(t, items, 3)
assert.Equal(t, "user", items[0].Role)
assert.Equal(t, "assistant", items[1].Role)
assert.Equal(t, "function_call", items[2].Type)
assert.Empty(t, items[2].ID)
}
func TestChatCompletionsToResponses_AssistantArrayContentPreserved(t *testing.T) {
req := &ChatCompletionsRequest{
Model: "gpt-4o",
Messages: []ChatMessage{
{Role: "user", Content: json.RawMessage(`"Hi"`)},
{Role: "assistant", Content: json.RawMessage(`[{"type":"text","text":"A"},{"type":"text","text":"B"}]`)},
},
}
resp, err := ChatCompletionsToResponses(req)
require.NoError(t, err)
var items []ResponsesInputItem
require.NoError(t, json.Unmarshal(resp.Input, &items))
require.Len(t, items, 2)
assert.Equal(t, "assistant", items[1].Role)
var parts []ResponsesContentPart
require.NoError(t, json.Unmarshal(items[1].Content, &parts))
require.Len(t, parts, 1)
assert.Equal(t, "output_text", parts[0].Type)
assert.Equal(t, "AB", parts[0].Text)
}
func TestChatCompletionsToResponses_AssistantThinkingTagPreserved(t *testing.T) {
req := &ChatCompletionsRequest{
Model: "gpt-4o",
Messages: []ChatMessage{
{Role: "user", Content: json.RawMessage(`"Hi"`)},
{Role: "assistant", Content: json.RawMessage(`[{"type":"thinking","thinking":"internal plan"},{"type":"text","text":"final answer"}]`)},
},
}
resp, err := ChatCompletionsToResponses(req)
require.NoError(t, err)
var items []ResponsesInputItem
require.NoError(t, json.Unmarshal(resp.Input, &items))
require.Len(t, items, 2)
var parts []ResponsesContentPart
require.NoError(t, json.Unmarshal(items[1].Content, &parts))
require.Len(t, parts, 1)
assert.Equal(t, "output_text", parts[0].Type)
assert.Contains(t, parts[0].Text, "<thinking>internal plan</thinking>")
assert.Contains(t, parts[0].Text, "final answer")
}
// ---------------------------------------------------------------------------
// ResponsesToChatCompletions tests
// ---------------------------------------------------------------------------
func TestResponsesToChatCompletions_BasicText(t *testing.T) {
resp := &ResponsesResponse{
ID: "resp_123",
Status: "completed",
Output: []ResponsesOutput{
{
Type: "message",
Content: []ResponsesContentPart{
{Type: "output_text", Text: "Hello, world!"},
},
},
},
Usage: &ResponsesUsage{
InputTokens: 10,
OutputTokens: 5,
TotalTokens: 15,
},
}
chat := ResponsesToChatCompletions(resp, "gpt-4o")
assert.Equal(t, "chat.completion", chat.Object)
assert.Equal(t, "gpt-4o", chat.Model)
require.Len(t, chat.Choices, 1)
assert.Equal(t, "stop", chat.Choices[0].FinishReason)
var content string
require.NoError(t, json.Unmarshal(chat.Choices[0].Message.Content, &content))
assert.Equal(t, "Hello, world!", content)
require.NotNil(t, chat.Usage)
assert.Equal(t, 10, chat.Usage.PromptTokens)
assert.Equal(t, 5, chat.Usage.CompletionTokens)
assert.Equal(t, 15, chat.Usage.TotalTokens)
}
func TestResponsesToChatCompletions_ToolCalls(t *testing.T) {
resp := &ResponsesResponse{
ID: "resp_456",
Status: "completed",
Output: []ResponsesOutput{
{
Type: "function_call",
CallID: "call_xyz",
Name: "get_weather",
Arguments: `{"city":"NYC"}`,
},
},
}
chat := ResponsesToChatCompletions(resp, "gpt-4o")
require.Len(t, chat.Choices, 1)
assert.Equal(t, "tool_calls", chat.Choices[0].FinishReason)
msg := chat.Choices[0].Message
require.Len(t, msg.ToolCalls, 1)
assert.Equal(t, "call_xyz", msg.ToolCalls[0].ID)
assert.Equal(t, "function", msg.ToolCalls[0].Type)
assert.Equal(t, "get_weather", msg.ToolCalls[0].Function.Name)
assert.Equal(t, `{"city":"NYC"}`, msg.ToolCalls[0].Function.Arguments)
}
func TestResponsesToChatCompletions_Reasoning(t *testing.T) {
resp := &ResponsesResponse{
ID: "resp_789",
Status: "completed",
Output: []ResponsesOutput{
{
Type: "reasoning",
Summary: []ResponsesSummary{
{Type: "summary_text", Text: "I thought about it."},
},
},
{
Type: "message",
Content: []ResponsesContentPart{
{Type: "output_text", Text: "The answer is 42."},
},
},
},
}
chat := ResponsesToChatCompletions(resp, "gpt-4o")
require.Len(t, chat.Choices, 1)
var content string
require.NoError(t, json.Unmarshal(chat.Choices[0].Message.Content, &content))
assert.Equal(t, "The answer is 42.", content)
assert.Equal(t, "I thought about it.", chat.Choices[0].Message.ReasoningContent)
}
func TestResponsesToChatCompletions_Incomplete(t *testing.T) {
resp := &ResponsesResponse{
ID: "resp_inc",
Status: "incomplete",
IncompleteDetails: &ResponsesIncompleteDetails{Reason: "max_output_tokens"},
Output: []ResponsesOutput{
{
Type: "message",
Content: []ResponsesContentPart{
{Type: "output_text", Text: "partial..."},
},
},
},
}
chat := ResponsesToChatCompletions(resp, "gpt-4o")
require.Len(t, chat.Choices, 1)
assert.Equal(t, "length", chat.Choices[0].FinishReason)
}
func TestResponsesToChatCompletions_CachedTokens(t *testing.T) {
resp := &ResponsesResponse{
ID: "resp_cache",
Status: "completed",
Output: []ResponsesOutput{
{
Type: "message",
Content: []ResponsesContentPart{{Type: "output_text", Text: "cached"}},
},
},
Usage: &ResponsesUsage{
InputTokens: 100,
OutputTokens: 10,
TotalTokens: 110,
InputTokensDetails: &ResponsesInputTokensDetails{
CachedTokens: 80,
},
},
}
chat := ResponsesToChatCompletions(resp, "gpt-4o")
require.NotNil(t, chat.Usage)
require.NotNil(t, chat.Usage.PromptTokensDetails)
assert.Equal(t, 80, chat.Usage.PromptTokensDetails.CachedTokens)
}
func TestResponsesToChatCompletions_WebSearch(t *testing.T) {
resp := &ResponsesResponse{
ID: "resp_ws",
Status: "completed",
Output: []ResponsesOutput{
{
Type: "web_search_call",
Action: &WebSearchAction{Type: "search", Query: "test"},
},
{
Type: "message",
Content: []ResponsesContentPart{{Type: "output_text", Text: "search results"}},
},
},
}
chat := ResponsesToChatCompletions(resp, "gpt-4o")
require.Len(t, chat.Choices, 1)
assert.Equal(t, "stop", chat.Choices[0].FinishReason)
var content string
require.NoError(t, json.Unmarshal(chat.Choices[0].Message.Content, &content))
assert.Equal(t, "search results", content)
}
// ---------------------------------------------------------------------------
// Streaming: ResponsesEventToChatChunks tests
// ---------------------------------------------------------------------------
func TestResponsesEventToChatChunks_TextDelta(t *testing.T) {
state := NewResponsesEventToChatState()
state.Model = "gpt-4o"
// response.created → role chunk
chunks := ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.created",
Response: &ResponsesResponse{
ID: "resp_stream",
},
}, state)
require.Len(t, chunks, 1)
assert.Equal(t, "assistant", chunks[0].Choices[0].Delta.Role)
assert.True(t, state.SentRole)
// response.output_text.delta → content chunk
chunks = ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.output_text.delta",
Delta: "Hello",
}, state)
require.Len(t, chunks, 1)
require.NotNil(t, chunks[0].Choices[0].Delta.Content)
assert.Equal(t, "Hello", *chunks[0].Choices[0].Delta.Content)
}
func TestResponsesEventToChatChunks_ToolCallDelta(t *testing.T) {
state := NewResponsesEventToChatState()
state.Model = "gpt-4o"
state.SentRole = true
// response.output_item.added (function_call) — output_index=1 (e.g. after a message item at 0)
chunks := ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.output_item.added",
OutputIndex: 1,
Item: &ResponsesOutput{
Type: "function_call",
CallID: "call_1",
Name: "get_weather",
},
}, state)
require.Len(t, chunks, 1)
require.Len(t, chunks[0].Choices[0].Delta.ToolCalls, 1)
tc := chunks[0].Choices[0].Delta.ToolCalls[0]
assert.Equal(t, "call_1", tc.ID)
assert.Equal(t, "get_weather", tc.Function.Name)
require.NotNil(t, tc.Index)
assert.Equal(t, 0, *tc.Index)
// response.function_call_arguments.delta — uses output_index (NOT call_id) to find tool
chunks = ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.function_call_arguments.delta",
OutputIndex: 1, // matches the output_index from output_item.added above
Delta: `{"city":`,
}, state)
require.Len(t, chunks, 1)
tc = chunks[0].Choices[0].Delta.ToolCalls[0]
require.NotNil(t, tc.Index)
assert.Equal(t, 0, *tc.Index, "argument delta must use same index as the tool call")
assert.Equal(t, `{"city":`, tc.Function.Arguments)
// Add a second function call at output_index=2
chunks = ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.output_item.added",
OutputIndex: 2,
Item: &ResponsesOutput{
Type: "function_call",
CallID: "call_2",
Name: "get_time",
},
}, state)
require.Len(t, chunks, 1)
tc = chunks[0].Choices[0].Delta.ToolCalls[0]
require.NotNil(t, tc.Index)
assert.Equal(t, 1, *tc.Index, "second tool call should get index 1")
// Argument delta for second tool call
chunks = ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.function_call_arguments.delta",
OutputIndex: 2,
Delta: `{"tz":"UTC"}`,
}, state)
require.Len(t, chunks, 1)
tc = chunks[0].Choices[0].Delta.ToolCalls[0]
require.NotNil(t, tc.Index)
assert.Equal(t, 1, *tc.Index, "second tool arg delta must use index 1")
// Argument delta for first tool call (interleaved)
chunks = ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.function_call_arguments.delta",
OutputIndex: 1,
Delta: `"Tokyo"}`,
}, state)
require.Len(t, chunks, 1)
tc = chunks[0].Choices[0].Delta.ToolCalls[0]
require.NotNil(t, tc.Index)
assert.Equal(t, 0, *tc.Index, "first tool arg delta must still use index 0")
}
func TestResponsesEventToChatChunks_Completed(t *testing.T) {
state := NewResponsesEventToChatState()
state.Model = "gpt-4o"
state.IncludeUsage = true
chunks := ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.completed",
Response: &ResponsesResponse{
Status: "completed",
Usage: &ResponsesUsage{
InputTokens: 50,
OutputTokens: 20,
TotalTokens: 70,
InputTokensDetails: &ResponsesInputTokensDetails{
CachedTokens: 30,
},
},
},
}, state)
// finish chunk + usage chunk
require.Len(t, chunks, 2)
// First chunk: finish_reason
require.NotNil(t, chunks[0].Choices[0].FinishReason)
assert.Equal(t, "stop", *chunks[0].Choices[0].FinishReason)
// Second chunk: usage
require.NotNil(t, chunks[1].Usage)
assert.Equal(t, 50, chunks[1].Usage.PromptTokens)
assert.Equal(t, 20, chunks[1].Usage.CompletionTokens)
assert.Equal(t, 70, chunks[1].Usage.TotalTokens)
require.NotNil(t, chunks[1].Usage.PromptTokensDetails)
assert.Equal(t, 30, chunks[1].Usage.PromptTokensDetails.CachedTokens)
}
func TestResponsesEventToChatChunks_CompletedWithToolCalls(t *testing.T) {
state := NewResponsesEventToChatState()
state.Model = "gpt-4o"
state.SawToolCall = true
chunks := ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.completed",
Response: &ResponsesResponse{
Status: "completed",
},
}, state)
require.Len(t, chunks, 1)
require.NotNil(t, chunks[0].Choices[0].FinishReason)
assert.Equal(t, "tool_calls", *chunks[0].Choices[0].FinishReason)
}
func TestResponsesEventToChatChunks_ReasoningDelta(t *testing.T) {
state := NewResponsesEventToChatState()
state.Model = "gpt-4o"
state.SentRole = true
chunks := ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.reasoning_summary_text.delta",
Delta: "Thinking...",
}, state)
require.Len(t, chunks, 1)
require.NotNil(t, chunks[0].Choices[0].Delta.ReasoningContent)
assert.Equal(t, "Thinking...", *chunks[0].Choices[0].Delta.ReasoningContent)
chunks = ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.reasoning_summary_text.done",
}, state)
require.Len(t, chunks, 0)
}
func TestResponsesEventToChatChunks_ReasoningThenTextAutoCloseTag(t *testing.T) {
state := NewResponsesEventToChatState()
state.Model = "gpt-4o"
state.SentRole = true
chunks := ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.reasoning_summary_text.delta",
Delta: "plan",
}, state)
require.Len(t, chunks, 1)
require.NotNil(t, chunks[0].Choices[0].Delta.ReasoningContent)
assert.Equal(t, "plan", *chunks[0].Choices[0].Delta.ReasoningContent)
chunks = ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.output_text.delta",
Delta: "answer",
}, state)
require.Len(t, chunks, 1)
require.NotNil(t, chunks[0].Choices[0].Delta.Content)
assert.Equal(t, "answer", *chunks[0].Choices[0].Delta.Content)
}
func TestFinalizeResponsesChatStream(t *testing.T) {
state := NewResponsesEventToChatState()
state.Model = "gpt-4o"
state.IncludeUsage = true
state.Usage = &ChatUsage{
PromptTokens: 100,
CompletionTokens: 50,
TotalTokens: 150,
}
chunks := FinalizeResponsesChatStream(state)
require.Len(t, chunks, 2)
// Finish chunk
require.NotNil(t, chunks[0].Choices[0].FinishReason)
assert.Equal(t, "stop", *chunks[0].Choices[0].FinishReason)
// Usage chunk
require.NotNil(t, chunks[1].Usage)
assert.Equal(t, 100, chunks[1].Usage.PromptTokens)
// Idempotent: second call returns nil
assert.Nil(t, FinalizeResponsesChatStream(state))
}
func TestFinalizeResponsesChatStream_AfterCompleted(t *testing.T) {
// If response.completed already emitted the finish chunk, FinalizeResponsesChatStream
// must be a no-op (prevents double finish_reason being sent to the client).
state := NewResponsesEventToChatState()
state.Model = "gpt-4o"
state.IncludeUsage = true
// Simulate response.completed
chunks := ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.completed",
Response: &ResponsesResponse{
Status: "completed",
Usage: &ResponsesUsage{
InputTokens: 10,
OutputTokens: 5,
TotalTokens: 15,
},
},
}, state)
require.NotEmpty(t, chunks) // finish + usage chunks
// Now FinalizeResponsesChatStream should return nil — already finalized.
assert.Nil(t, FinalizeResponsesChatStream(state))
}
func TestChatChunkToSSE(t *testing.T) {
chunk := ChatCompletionsChunk{
ID: "chatcmpl-test",
Object: "chat.completion.chunk",
Created: 1700000000,
Model: "gpt-4o",
Choices: []ChatChunkChoice{
{
Index: 0,
Delta: ChatDelta{Role: "assistant"},
FinishReason: nil,
},
},
}
sse, err := ChatChunkToSSE(chunk)
require.NoError(t, err)
assert.Contains(t, sse, "data: ")
assert.Contains(t, sse, "chatcmpl-test")
assert.Contains(t, sse, "assistant")
assert.True(t, len(sse) > 10)
}
// ---------------------------------------------------------------------------
// Stream round-trip test
// ---------------------------------------------------------------------------
func TestChatCompletionsStreamRoundTrip(t *testing.T) {
// Simulate: client sends chat completions request, upstream returns Responses SSE events.
// Verify that the streaming state machine produces correct chat completions chunks.
state := NewResponsesEventToChatState()
state.Model = "gpt-4o"
state.IncludeUsage = true
var allChunks []ChatCompletionsChunk
// 1. response.created
chunks := ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.created",
Response: &ResponsesResponse{ID: "resp_rt"},
}, state)
allChunks = append(allChunks, chunks...)
// 2. text deltas
for _, text := range []string{"Hello", ", ", "world", "!"} {
chunks = ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.output_text.delta",
Delta: text,
}, state)
allChunks = append(allChunks, chunks...)
}
// 3. response.completed
chunks = ResponsesEventToChatChunks(&ResponsesStreamEvent{
Type: "response.completed",
Response: &ResponsesResponse{
Status: "completed",
Usage: &ResponsesUsage{
InputTokens: 10,
OutputTokens: 4,
TotalTokens: 14,
},
},
}, state)
allChunks = append(allChunks, chunks...)
// Verify: role chunk + 4 text chunks + finish chunk + usage chunk = 7
require.Len(t, allChunks, 7)
// First chunk has role
assert.Equal(t, "assistant", allChunks[0].Choices[0].Delta.Role)
// Text chunks
var fullText string
for i := 1; i <= 4; i++ {
require.NotNil(t, allChunks[i].Choices[0].Delta.Content)
fullText += *allChunks[i].Choices[0].Delta.Content
}
assert.Equal(t, "Hello, world!", fullText)
// Finish chunk
require.NotNil(t, allChunks[5].Choices[0].FinishReason)
assert.Equal(t, "stop", *allChunks[5].Choices[0].FinishReason)
// Usage chunk
require.NotNil(t, allChunks[6].Usage)
assert.Equal(t, 10, allChunks[6].Usage.PromptTokens)
assert.Equal(t, 4, allChunks[6].Usage.CompletionTokens)
// All chunks share the same ID
for _, c := range allChunks {
assert.Equal(t, "resp_rt", c.ID)
}
}

385
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/apicompat/chatcompletions_to_responses.go Normal file
View File

@@ -0,0 +1,385 @@
package apicompat
import (
"encoding/json"
"fmt"
"strings"
)
// ChatCompletionsToResponses converts a Chat Completions request into a
// Responses API request. The upstream always streams, so Stream is forced to
// true. store is always false and reasoning.encrypted_content is always
// included so that the response translator has full context.
func ChatCompletionsToResponses(req *ChatCompletionsRequest) (*ResponsesRequest, error) {
input, err := convertChatMessagesToResponsesInput(req.Messages)
if err != nil {
return nil, err
}
inputJSON, err := json.Marshal(input)
if err != nil {
return nil, err
}
out := &ResponsesRequest{
Model: req.Model,
Input: inputJSON,
Temperature: req.Temperature,
TopP: req.TopP,
Stream: true, // upstream always streams
Include: []string{"reasoning.encrypted_content"},
ServiceTier: req.ServiceTier,
}
storeFalse := false
out.Store = &storeFalse
// max_tokens / max_completion_tokens → max_output_tokens, prefer max_completion_tokens
maxTokens := 0
if req.MaxTokens != nil {
maxTokens = *req.MaxTokens
}
if req.MaxCompletionTokens != nil {
maxTokens = *req.MaxCompletionTokens
}
if maxTokens > 0 {
v := maxTokens
if v < minMaxOutputTokens {
v = minMaxOutputTokens
}
out.MaxOutputTokens = &v
}
// reasoning_effort → reasoning.effort + reasoning.summary="auto"
if req.ReasoningEffort != "" {
out.Reasoning = &ResponsesReasoning{
Effort: req.ReasoningEffort,
Summary: "auto",
}
}
// tools[] and legacy functions[] → ResponsesTool[]
if len(req.Tools) > 0 || len(req.Functions) > 0 {
out.Tools = convertChatToolsToResponses(req.Tools, req.Functions)
}
// tool_choice: already compatible format — pass through directly.
// Legacy function_call needs mapping.
if len(req.ToolChoice) > 0 {
out.ToolChoice = req.ToolChoice
} else if len(req.FunctionCall) > 0 {
tc, err := convertChatFunctionCallToToolChoice(req.FunctionCall)
if err != nil {
return nil, fmt.Errorf("convert function_call: %w", err)
}
out.ToolChoice = tc
}
return out, nil
}
// convertChatMessagesToResponsesInput converts the Chat Completions messages
// array into a Responses API input items array.
func convertChatMessagesToResponsesInput(msgs []ChatMessage) ([]ResponsesInputItem, error) {
var out []ResponsesInputItem
for _, m := range msgs {
items, err := chatMessageToResponsesItems(m)
if err != nil {
return nil, err
}
out = append(out, items...)
}
return out, nil
}
// chatMessageToResponsesItems converts a single ChatMessage into one or more
// ResponsesInputItem values.
func chatMessageToResponsesItems(m ChatMessage) ([]ResponsesInputItem, error) {
switch m.Role {
case "system":
return chatSystemToResponses(m)
case "user":
return chatUserToResponses(m)
case "assistant":
return chatAssistantToResponses(m)
case "tool":
return chatToolToResponses(m)
case "function":
return chatFunctionToResponses(m)
default:
return chatUserToResponses(m)
}
}
// chatSystemToResponses converts a system message.
func chatSystemToResponses(m ChatMessage) ([]ResponsesInputItem, error) {
text, err := parseChatContent(m.Content)
if err != nil {
return nil, err
}
content, err := json.Marshal(text)
if err != nil {
return nil, err
}
return []ResponsesInputItem{{Role: "system", Content: content}}, nil
}
// chatUserToResponses converts a user message, handling both plain strings and
// multi-modal content arrays.
func chatUserToResponses(m ChatMessage) ([]ResponsesInputItem, error) {
// Try plain string first.
var s string
if err := json.Unmarshal(m.Content, &s); err == nil {
content, _ := json.Marshal(s)
return []ResponsesInputItem{{Role: "user", Content: content}}, nil
}
var parts []ChatContentPart
if err := json.Unmarshal(m.Content, &parts); err != nil {
return nil, fmt.Errorf("parse user content: %w", err)
}
var responseParts []ResponsesContentPart
for _, p := range parts {
switch p.Type {
case "text":
if p.Text != "" {
responseParts = append(responseParts, ResponsesContentPart{
Type: "input_text",
Text: p.Text,
})
}
case "image_url":
if p.ImageURL != nil && p.ImageURL.URL != "" {
responseParts = append(responseParts, ResponsesContentPart{
Type: "input_image",
ImageURL: p.ImageURL.URL,
})
}
}
}
content, err := json.Marshal(responseParts)
if err != nil {
return nil, err
}
return []ResponsesInputItem{{Role: "user", Content: content}}, nil
}
// chatAssistantToResponses converts an assistant message. If there is both
// text content and tool_calls, the text is emitted as an assistant message
// first, then each tool_call becomes a function_call item. If the content is
// empty/nil and there are tool_calls, only function_call items are emitted.
func chatAssistantToResponses(m ChatMessage) ([]ResponsesInputItem, error) {
var items []ResponsesInputItem
// Emit assistant message with output_text if content is non-empty.
if len(m.Content) > 0 {
s, err := parseAssistantContent(m.Content)
if err != nil {
return nil, err
}
if s != "" {
parts := []ResponsesContentPart{{Type: "output_text", Text: s}}
partsJSON, err := json.Marshal(parts)
if err != nil {
return nil, err
}
items = append(items, ResponsesInputItem{Role: "assistant", Content: partsJSON})
}
}
// Emit one function_call item per tool_call.
for _, tc := range m.ToolCalls {
args := tc.Function.Arguments
if args == "" {
args = "{}"
}
items = append(items, ResponsesInputItem{
Type: "function_call",
CallID: tc.ID,
Name: tc.Function.Name,
Arguments: args,
})
}
return items, nil
}
// parseAssistantContent returns assistant content as plain text.
//
// Supported formats:
// - JSON string
// - JSON array of typed parts (e.g. [{"type":"text","text":"..."}])
//
// For structured thinking/reasoning parts, it preserves semantics by wrapping
// the text in explicit tags so downstream can still distinguish it from normal text.
func parseAssistantContent(raw json.RawMessage) (string, error) {
if len(raw) == 0 {
return "", nil
}
var s string
if err := json.Unmarshal(raw, &s); err == nil {
return s, nil
}
var parts []map[string]any
if err := json.Unmarshal(raw, &parts); err != nil {
// Keep compatibility with prior behavior: unsupported assistant content
// formats are ignored instead of failing the whole request conversion.
return "", nil
}
var b strings.Builder
write := func(v string) error {
_, err := b.WriteString(v)
return err
}
for _, p := range parts {
typ, _ := p["type"].(string)
text, _ := p["text"].(string)
thinking, _ := p["thinking"].(string)
switch typ {
case "thinking", "reasoning":
if thinking != "" {
if err := write("<thinking>"); err != nil {
return "", err
}
if err := write(thinking); err != nil {
return "", err
}
if err := write("</thinking>"); err != nil {
return "", err
}
} else if text != "" {
if err := write("<thinking>"); err != nil {
return "", err
}
if err := write(text); err != nil {
return "", err
}
if err := write("</thinking>"); err != nil {
return "", err
}
}
default:
if text != "" {
if err := write(text); err != nil {
return "", err
}
}
}
}
return b.String(), nil
}
// chatToolToResponses converts a tool result message (role=tool) into a
// function_call_output item.
func chatToolToResponses(m ChatMessage) ([]ResponsesInputItem, error) {
output, err := parseChatContent(m.Content)
if err != nil {
return nil, err
}
if output == "" {
output = "(empty)"
}
return []ResponsesInputItem{{
Type: "function_call_output",
CallID: m.ToolCallID,
Output: output,
}}, nil
}
// chatFunctionToResponses converts a legacy function result message
// (role=function) into a function_call_output item. The Name field is used as
// call_id since legacy function calls do not carry a separate call_id.
func chatFunctionToResponses(m ChatMessage) ([]ResponsesInputItem, error) {
output, err := parseChatContent(m.Content)
if err != nil {
return nil, err
}
if output == "" {
output = "(empty)"
}
return []ResponsesInputItem{{
Type: "function_call_output",
CallID: m.Name,
Output: output,
}}, nil
}
// parseChatContent returns the string value of a ChatMessage Content field.
// Content must be a JSON string. Returns "" if content is null or empty.
func parseChatContent(raw json.RawMessage) (string, error) {
if len(raw) == 0 {
return "", nil
}
var s string
if err := json.Unmarshal(raw, &s); err != nil {
return "", fmt.Errorf("parse content as string: %w", err)
}
return s, nil
}
// convertChatToolsToResponses maps Chat Completions tool definitions and legacy
// function definitions to Responses API tool definitions.
func convertChatToolsToResponses(tools []ChatTool, functions []ChatFunction) []ResponsesTool {
var out []ResponsesTool
for _, t := range tools {
if t.Type != "function" || t.Function == nil {
continue
}
rt := ResponsesTool{
Type: "function",
Name: t.Function.Name,
Description: t.Function.Description,
Parameters: t.Function.Parameters,
Strict: t.Function.Strict,
}
out = append(out, rt)
}
// Legacy functions[] are treated as function-type tools.
for _, f := range functions {
rt := ResponsesTool{
Type: "function",
Name: f.Name,
Description: f.Description,
Parameters: f.Parameters,
Strict: f.Strict,
}
out = append(out, rt)
}
return out
}
// convertChatFunctionCallToToolChoice maps the legacy function_call field to a
// Responses API tool_choice value.
//
// "auto" → "auto"
// "none" → "none"
// {"name":"X"} → {"type":"function","function":{"name":"X"}}
func convertChatFunctionCallToToolChoice(raw json.RawMessage) (json.RawMessage, error) {
// Try string first ("auto", "none", etc.) — pass through as-is.
var s string
if err := json.Unmarshal(raw, &s); err == nil {
return json.Marshal(s)
}
// Object form: {"name":"X"}
var obj struct {
Name string `json:"name"`
}
if err := json.Unmarshal(raw, &obj); err != nil {
return nil, err
}
return json.Marshal(map[string]any{
"type": "function",
"function": map[string]string{"name": obj.Name},
})
}

516
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/apicompat/responses_to_anthropic.go Normal file
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package apicompat
import (
"encoding/json"
"fmt"
"time"
)
// ---------------------------------------------------------------------------
// Non-streaming: ResponsesResponse → AnthropicResponse
// ---------------------------------------------------------------------------
// ResponsesToAnthropic converts a Responses API response directly into an
// Anthropic Messages response. Reasoning output items are mapped to thinking
// blocks; function_call items become tool_use blocks.
func ResponsesToAnthropic(resp *ResponsesResponse, model string) *AnthropicResponse {
out := &AnthropicResponse{
ID: resp.ID,
Type: "message",
Role: "assistant",
Model: model,
}
var blocks []AnthropicContentBlock
for _, item := range resp.Output {
switch item.Type {
case "reasoning":
summaryText := ""
for _, s := range item.Summary {
if s.Type == "summary_text" && s.Text != "" {
summaryText += s.Text
}
}
if summaryText != "" {
blocks = append(blocks, AnthropicContentBlock{
Type: "thinking",
Thinking: summaryText,
})
}
case "message":
for _, part := range item.Content {
if part.Type == "output_text" && part.Text != "" {
blocks = append(blocks, AnthropicContentBlock{
Type: "text",
Text: part.Text,
})
}
}
case "function_call":
blocks = append(blocks, AnthropicContentBlock{
Type: "tool_use",
ID: fromResponsesCallID(item.CallID),
Name: item.Name,
Input: json.RawMessage(item.Arguments),
})
case "web_search_call":
toolUseID := "srvtoolu_" + item.ID
query := ""
if item.Action != nil {
query = item.Action.Query
}
inputJSON, _ := json.Marshal(map[string]string{"query": query})
blocks = append(blocks, AnthropicContentBlock{
Type: "server_tool_use",
ID: toolUseID,
Name: "web_search",
Input: inputJSON,
})
emptyResults, _ := json.Marshal([]struct{}{})
blocks = append(blocks, AnthropicContentBlock{
Type: "web_search_tool_result",
ToolUseID: toolUseID,
Content: emptyResults,
})
}
}
if len(blocks) == 0 {
blocks = append(blocks, AnthropicContentBlock{Type: "text", Text: ""})
}
out.Content = blocks
out.StopReason = responsesStatusToAnthropicStopReason(resp.Status, resp.IncompleteDetails, blocks)
if resp.Usage != nil {
out.Usage = AnthropicUsage{
InputTokens: resp.Usage.InputTokens,
OutputTokens: resp.Usage.OutputTokens,
}
if resp.Usage.InputTokensDetails != nil {
out.Usage.CacheReadInputTokens = resp.Usage.InputTokensDetails.CachedTokens
}
}
return out
}
func responsesStatusToAnthropicStopReason(status string, details *ResponsesIncompleteDetails, blocks []AnthropicContentBlock) string {
switch status {
case "incomplete":
if details != nil && details.Reason == "max_output_tokens" {
return "max_tokens"
}
return "end_turn"
case "completed":
if len(blocks) > 0 && blocks[len(blocks)-1].Type == "tool_use" {
return "tool_use"
}
return "end_turn"
default:
return "end_turn"
}
}
// ---------------------------------------------------------------------------
// Streaming: ResponsesStreamEvent → []AnthropicStreamEvent (stateful converter)
// ---------------------------------------------------------------------------
// ResponsesEventToAnthropicState tracks state for converting a sequence of
// Responses SSE events directly into Anthropic SSE events.
type ResponsesEventToAnthropicState struct {
MessageStartSent bool
MessageStopSent bool
ContentBlockIndex int
ContentBlockOpen bool
CurrentBlockType string // "text" | "thinking" | "tool_use"
// OutputIndexToBlockIdx maps Responses output_index → Anthropic content block index.
OutputIndexToBlockIdx map[int]int
InputTokens int
OutputTokens int
CacheReadInputTokens int
ResponseID string
Model string
Created int64
}
// NewResponsesEventToAnthropicState returns an initialised stream state.
func NewResponsesEventToAnthropicState() *ResponsesEventToAnthropicState {
return &ResponsesEventToAnthropicState{
OutputIndexToBlockIdx: make(map[int]int),
Created: time.Now().Unix(),
}
}
// ResponsesEventToAnthropicEvents converts a single Responses SSE event into
// zero or more Anthropic SSE events, updating state as it goes.
func ResponsesEventToAnthropicEvents(
evt *ResponsesStreamEvent,
state *ResponsesEventToAnthropicState,
) []AnthropicStreamEvent {
switch evt.Type {
case "response.created":
return resToAnthHandleCreated(evt, state)
case "response.output_item.added":
return resToAnthHandleOutputItemAdded(evt, state)
case "response.output_text.delta":
return resToAnthHandleTextDelta(evt, state)
case "response.output_text.done":
return resToAnthHandleBlockDone(state)
case "response.function_call_arguments.delta":
return resToAnthHandleFuncArgsDelta(evt, state)
case "response.function_call_arguments.done":
return resToAnthHandleBlockDone(state)
case "response.output_item.done":
return resToAnthHandleOutputItemDone(evt, state)
case "response.reasoning_summary_text.delta":
return resToAnthHandleReasoningDelta(evt, state)
case "response.reasoning_summary_text.done":
return resToAnthHandleBlockDone(state)
case "response.completed", "response.incomplete", "response.failed":
return resToAnthHandleCompleted(evt, state)
default:
return nil
}
}
// FinalizeResponsesAnthropicStream emits synthetic termination events if the
// stream ended without a proper completion event.
func FinalizeResponsesAnthropicStream(state *ResponsesEventToAnthropicState) []AnthropicStreamEvent {
if !state.MessageStartSent || state.MessageStopSent {
return nil
}
var events []AnthropicStreamEvent
events = append(events, closeCurrentBlock(state)...)
events = append(events,
AnthropicStreamEvent{
Type: "message_delta",
Delta: &AnthropicDelta{
StopReason: "end_turn",
},
Usage: &AnthropicUsage{
InputTokens: state.InputTokens,
OutputTokens: state.OutputTokens,
CacheReadInputTokens: state.CacheReadInputTokens,
},
},
AnthropicStreamEvent{Type: "message_stop"},
)
state.MessageStopSent = true
return events
}
// ResponsesAnthropicEventToSSE formats an AnthropicStreamEvent as an SSE line pair.
func ResponsesAnthropicEventToSSE(evt AnthropicStreamEvent) (string, error) {
data, err := json.Marshal(evt)
if err != nil {
return "", err
}
return fmt.Sprintf("event: %s\ndata: %s\n\n", evt.Type, data), nil
}
// --- internal handlers ---
func resToAnthHandleCreated(evt *ResponsesStreamEvent, state *ResponsesEventToAnthropicState) []AnthropicStreamEvent {
if evt.Response != nil {
state.ResponseID = evt.Response.ID
// Only use upstream model if no override was set (e.g. originalModel)
if state.Model == "" {
state.Model = evt.Response.Model
}
}
if state.MessageStartSent {
return nil
}
state.MessageStartSent = true
return []AnthropicStreamEvent{{
Type: "message_start",
Message: &AnthropicResponse{
ID: state.ResponseID,
Type: "message",
Role: "assistant",
Content: []AnthropicContentBlock{},
Model: state.Model,
Usage: AnthropicUsage{
InputTokens: 0,
OutputTokens: 0,
},
},
}}
}
func resToAnthHandleOutputItemAdded(evt *ResponsesStreamEvent, state *ResponsesEventToAnthropicState) []AnthropicStreamEvent {
if evt.Item == nil {
return nil
}
switch evt.Item.Type {
case "function_call":
var events []AnthropicStreamEvent
events = append(events, closeCurrentBlock(state)...)
idx := state.ContentBlockIndex
state.OutputIndexToBlockIdx[evt.OutputIndex] = idx
state.ContentBlockOpen = true
state.CurrentBlockType = "tool_use"
events = append(events, AnthropicStreamEvent{
Type: "content_block_start",
Index: &idx,
ContentBlock: &AnthropicContentBlock{
Type: "tool_use",
ID: fromResponsesCallID(evt.Item.CallID),
Name: evt.Item.Name,
Input: json.RawMessage("{}"),
},
})
return events
case "reasoning":
var events []AnthropicStreamEvent
events = append(events, closeCurrentBlock(state)...)
idx := state.ContentBlockIndex
state.OutputIndexToBlockIdx[evt.OutputIndex] = idx
state.ContentBlockOpen = true
state.CurrentBlockType = "thinking"
events = append(events, AnthropicStreamEvent{
Type: "content_block_start",
Index: &idx,
ContentBlock: &AnthropicContentBlock{
Type: "thinking",
Thinking: "",
},
})
return events
case "message":
return nil
}
return nil
}
func resToAnthHandleTextDelta(evt *ResponsesStreamEvent, state *ResponsesEventToAnthropicState) []AnthropicStreamEvent {
if evt.Delta == "" {
return nil
}
var events []AnthropicStreamEvent
if !state.ContentBlockOpen || state.CurrentBlockType != "text" {
events = append(events, closeCurrentBlock(state)...)
idx := state.ContentBlockIndex
state.ContentBlockOpen = true
state.CurrentBlockType = "text"
events = append(events, AnthropicStreamEvent{
Type: "content_block_start",
Index: &idx,
ContentBlock: &AnthropicContentBlock{
Type: "text",
Text: "",
},
})
}
idx := state.ContentBlockIndex
events = append(events, AnthropicStreamEvent{
Type: "content_block_delta",
Index: &idx,
Delta: &AnthropicDelta{
Type: "text_delta",
Text: evt.Delta,
},
})
return events
}
func resToAnthHandleFuncArgsDelta(evt *ResponsesStreamEvent, state *ResponsesEventToAnthropicState) []AnthropicStreamEvent {
if evt.Delta == "" {
return nil
}
blockIdx, ok := state.OutputIndexToBlockIdx[evt.OutputIndex]
if !ok {
return nil
}
return []AnthropicStreamEvent{{
Type: "content_block_delta",
Index: &blockIdx,
Delta: &AnthropicDelta{
Type: "input_json_delta",
PartialJSON: evt.Delta,
},
}}
}
func resToAnthHandleReasoningDelta(evt *ResponsesStreamEvent, state *ResponsesEventToAnthropicState) []AnthropicStreamEvent {
if evt.Delta == "" {
return nil
}
blockIdx, ok := state.OutputIndexToBlockIdx[evt.OutputIndex]
if !ok {
return nil
}
return []AnthropicStreamEvent{{
Type: "content_block_delta",
Index: &blockIdx,
Delta: &AnthropicDelta{
Type: "thinking_delta",
Thinking: evt.Delta,
},
}}
}
func resToAnthHandleBlockDone(state *ResponsesEventToAnthropicState) []AnthropicStreamEvent {
if !state.ContentBlockOpen {
return nil
}
return closeCurrentBlock(state)
}
func resToAnthHandleOutputItemDone(evt *ResponsesStreamEvent, state *ResponsesEventToAnthropicState) []AnthropicStreamEvent {
if evt.Item == nil {
return nil
}
// Handle web_search_call → synthesize server_tool_use + web_search_tool_result blocks.
if evt.Item.Type == "web_search_call" && evt.Item.Status == "completed" {
return resToAnthHandleWebSearchDone(evt, state)
}
if state.ContentBlockOpen {
return closeCurrentBlock(state)
}
return nil
}
// resToAnthHandleWebSearchDone converts an OpenAI web_search_call output item
// into Anthropic server_tool_use + web_search_tool_result content block pairs.
// This allows Claude Code to count the searches performed.
func resToAnthHandleWebSearchDone(evt *ResponsesStreamEvent, state *ResponsesEventToAnthropicState) []AnthropicStreamEvent {
var events []AnthropicStreamEvent
events = append(events, closeCurrentBlock(state)...)
toolUseID := "srvtoolu_" + evt.Item.ID
query := ""
if evt.Item.Action != nil {
query = evt.Item.Action.Query
}
inputJSON, _ := json.Marshal(map[string]string{"query": query})
// Emit server_tool_use block (start + stop).
idx1 := state.ContentBlockIndex
events = append(events, AnthropicStreamEvent{
Type: "content_block_start",
Index: &idx1,
ContentBlock: &AnthropicContentBlock{
Type: "server_tool_use",
ID: toolUseID,
Name: "web_search",
Input: inputJSON,
},
})
events = append(events, AnthropicStreamEvent{
Type: "content_block_stop",
Index: &idx1,
})
state.ContentBlockIndex++
// Emit web_search_tool_result block (start + stop).
// Content is empty because OpenAI does not expose individual search results;
// the model consumes them internally and produces text output.
emptyResults, _ := json.Marshal([]struct{}{})
idx2 := state.ContentBlockIndex
events = append(events, AnthropicStreamEvent{
Type: "content_block_start",
Index: &idx2,
ContentBlock: &AnthropicContentBlock{
Type: "web_search_tool_result",
ToolUseID: toolUseID,
Content: emptyResults,
},
})
events = append(events, AnthropicStreamEvent{
Type: "content_block_stop",
Index: &idx2,
})
state.ContentBlockIndex++
return events
}
func resToAnthHandleCompleted(evt *ResponsesStreamEvent, state *ResponsesEventToAnthropicState) []AnthropicStreamEvent {
if state.MessageStopSent {
return nil
}
var events []AnthropicStreamEvent
events = append(events, closeCurrentBlock(state)...)
stopReason := "end_turn"
if evt.Response != nil {
if evt.Response.Usage != nil {
state.InputTokens = evt.Response.Usage.InputTokens
state.OutputTokens = evt.Response.Usage.OutputTokens
if evt.Response.Usage.InputTokensDetails != nil {
state.CacheReadInputTokens = evt.Response.Usage.InputTokensDetails.CachedTokens
}
}
switch evt.Response.Status {
case "incomplete":
if evt.Response.IncompleteDetails != nil && evt.Response.IncompleteDetails.Reason == "max_output_tokens" {
stopReason = "max_tokens"
}
case "completed":
if state.ContentBlockIndex > 0 && state.CurrentBlockType == "tool_use" {
stopReason = "tool_use"
}
}
}
events = append(events,
AnthropicStreamEvent{
Type: "message_delta",
Delta: &AnthropicDelta{
StopReason: stopReason,
},
Usage: &AnthropicUsage{
InputTokens: state.InputTokens,
OutputTokens: state.OutputTokens,
CacheReadInputTokens: state.CacheReadInputTokens,
},
},
AnthropicStreamEvent{Type: "message_stop"},
)
state.MessageStopSent = true
return events
}
func closeCurrentBlock(state *ResponsesEventToAnthropicState) []AnthropicStreamEvent {
if !state.ContentBlockOpen {
return nil
}
idx := state.ContentBlockIndex
state.ContentBlockOpen = false
state.ContentBlockIndex++
return []AnthropicStreamEvent{{
Type: "content_block_stop",
Index: &idx,
}}
}

374
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/apicompat/responses_to_chatcompletions.go Normal file
View File

@@ -0,0 +1,374 @@
package apicompat
import (
"crypto/rand"
"encoding/hex"
"encoding/json"
"fmt"
"time"
)
// ---------------------------------------------------------------------------
// Non-streaming: ResponsesResponse → ChatCompletionsResponse
// ---------------------------------------------------------------------------
// ResponsesToChatCompletions converts a Responses API response into a Chat
// Completions response. Text output items are concatenated into
// choices[0].message.content; function_call items become tool_calls.
func ResponsesToChatCompletions(resp *ResponsesResponse, model string) *ChatCompletionsResponse {
id := resp.ID
if id == "" {
id = generateChatCmplID()
}
out := &ChatCompletionsResponse{
ID: id,
Object: "chat.completion",
Created: time.Now().Unix(),
Model: model,
}
var contentText string
var reasoningText string
var toolCalls []ChatToolCall
for _, item := range resp.Output {
switch item.Type {
case "message":
for _, part := range item.Content {
if part.Type == "output_text" && part.Text != "" {
contentText += part.Text
}
}
case "function_call":
toolCalls = append(toolCalls, ChatToolCall{
ID: item.CallID,
Type: "function",
Function: ChatFunctionCall{
Name: item.Name,
Arguments: item.Arguments,
},
})
case "reasoning":
for _, s := range item.Summary {
if s.Type == "summary_text" && s.Text != "" {
reasoningText += s.Text
}
}
case "web_search_call":
// silently consumed — results already incorporated into text output
}
}
msg := ChatMessage{Role: "assistant"}
if len(toolCalls) > 0 {
msg.ToolCalls = toolCalls
}
if contentText != "" {
raw, _ := json.Marshal(contentText)
msg.Content = raw
}
if reasoningText != "" {
msg.ReasoningContent = reasoningText
}
finishReason := responsesStatusToChatFinishReason(resp.Status, resp.IncompleteDetails, toolCalls)
out.Choices = []ChatChoice{{
Index: 0,
Message: msg,
FinishReason: finishReason,
}}
if resp.Usage != nil {
usage := &ChatUsage{
PromptTokens: resp.Usage.InputTokens,
CompletionTokens: resp.Usage.OutputTokens,
TotalTokens: resp.Usage.InputTokens + resp.Usage.OutputTokens,
}
if resp.Usage.InputTokensDetails != nil && resp.Usage.InputTokensDetails.CachedTokens > 0 {
usage.PromptTokensDetails = &ChatTokenDetails{
CachedTokens: resp.Usage.InputTokensDetails.CachedTokens,
}
}
out.Usage = usage
}
return out
}
func responsesStatusToChatFinishReason(status string, details *ResponsesIncompleteDetails, toolCalls []ChatToolCall) string {
switch status {
case "incomplete":
if details != nil && details.Reason == "max_output_tokens" {
return "length"
}
return "stop"
case "completed":
if len(toolCalls) > 0 {
return "tool_calls"
}
return "stop"
default:
return "stop"
}
}
// ---------------------------------------------------------------------------
// Streaming: ResponsesStreamEvent → []ChatCompletionsChunk (stateful converter)
// ---------------------------------------------------------------------------
// ResponsesEventToChatState tracks state for converting a sequence of Responses
// SSE events into Chat Completions SSE chunks.
type ResponsesEventToChatState struct {
ID string
Model string
Created int64
SentRole bool
SawToolCall bool
SawText bool
Finalized bool // true after finish chunk has been emitted
NextToolCallIndex int // next sequential tool_call index to assign
OutputIndexToToolIndex map[int]int // Responses output_index → Chat tool_calls index
IncludeUsage bool
Usage *ChatUsage
}
// NewResponsesEventToChatState returns an initialised stream state.
func NewResponsesEventToChatState() *ResponsesEventToChatState {
return &ResponsesEventToChatState{
ID: generateChatCmplID(),
Created: time.Now().Unix(),
OutputIndexToToolIndex: make(map[int]int),
}
}
// ResponsesEventToChatChunks converts a single Responses SSE event into zero
// or more Chat Completions chunks, updating state as it goes.
func ResponsesEventToChatChunks(evt *ResponsesStreamEvent, state *ResponsesEventToChatState) []ChatCompletionsChunk {
switch evt.Type {
case "response.created":
return resToChatHandleCreated(evt, state)
case "response.output_text.delta":
return resToChatHandleTextDelta(evt, state)
case "response.output_item.added":
return resToChatHandleOutputItemAdded(evt, state)
case "response.function_call_arguments.delta":
return resToChatHandleFuncArgsDelta(evt, state)
case "response.reasoning_summary_text.delta":
return resToChatHandleReasoningDelta(evt, state)
case "response.reasoning_summary_text.done":
return nil
case "response.completed", "response.incomplete", "response.failed":
return resToChatHandleCompleted(evt, state)
default:
return nil
}
}
// FinalizeResponsesChatStream emits a final chunk with finish_reason if the
// stream ended without a proper completion event (e.g. upstream disconnect).
// It is idempotent: if a completion event already emitted the finish chunk,
// this returns nil.
func FinalizeResponsesChatStream(state *ResponsesEventToChatState) []ChatCompletionsChunk {
if state.Finalized {
return nil
}
state.Finalized = true
finishReason := "stop"
if state.SawToolCall {
finishReason = "tool_calls"
}
chunks := []ChatCompletionsChunk{makeChatFinishChunk(state, finishReason)}
if state.IncludeUsage && state.Usage != nil {
chunks = append(chunks, ChatCompletionsChunk{
ID: state.ID,
Object: "chat.completion.chunk",
Created: state.Created,
Model: state.Model,
Choices: []ChatChunkChoice{},
Usage: state.Usage,
})
}
return chunks
}
// ChatChunkToSSE formats a ChatCompletionsChunk as an SSE data line.
func ChatChunkToSSE(chunk ChatCompletionsChunk) (string, error) {
data, err := json.Marshal(chunk)
if err != nil {
return "", err
}
return fmt.Sprintf("data: %s\n\n", data), nil
}
// --- internal handlers ---
func resToChatHandleCreated(evt *ResponsesStreamEvent, state *ResponsesEventToChatState) []ChatCompletionsChunk {
if evt.Response != nil {
if evt.Response.ID != "" {
state.ID = evt.Response.ID
}
if state.Model == "" && evt.Response.Model != "" {
state.Model = evt.Response.Model
}
}
// Emit the role chunk.
if state.SentRole {
return nil
}
state.SentRole = true
role := "assistant"
return []ChatCompletionsChunk{makeChatDeltaChunk(state, ChatDelta{Role: role})}
}
func resToChatHandleTextDelta(evt *ResponsesStreamEvent, state *ResponsesEventToChatState) []ChatCompletionsChunk {
if evt.Delta == "" {
return nil
}
state.SawText = true
content := evt.Delta
return []ChatCompletionsChunk{makeChatDeltaChunk(state, ChatDelta{Content: &content})}
}
func resToChatHandleOutputItemAdded(evt *ResponsesStreamEvent, state *ResponsesEventToChatState) []ChatCompletionsChunk {
if evt.Item == nil || evt.Item.Type != "function_call" {
return nil
}
state.SawToolCall = true
idx := state.NextToolCallIndex
state.OutputIndexToToolIndex[evt.OutputIndex] = idx
state.NextToolCallIndex++
return []ChatCompletionsChunk{makeChatDeltaChunk(state, ChatDelta{
ToolCalls: []ChatToolCall{{
Index: &idx,
ID: evt.Item.CallID,
Type: "function",
Function: ChatFunctionCall{
Name: evt.Item.Name,
},
}},
})}
}
func resToChatHandleFuncArgsDelta(evt *ResponsesStreamEvent, state *ResponsesEventToChatState) []ChatCompletionsChunk {
if evt.Delta == "" {
return nil
}
idx, ok := state.OutputIndexToToolIndex[evt.OutputIndex]
if !ok {
return nil
}
return []ChatCompletionsChunk{makeChatDeltaChunk(state, ChatDelta{
ToolCalls: []ChatToolCall{{
Index: &idx,
Function: ChatFunctionCall{
Arguments: evt.Delta,
},
}},
})}
}
func resToChatHandleReasoningDelta(evt *ResponsesStreamEvent, state *ResponsesEventToChatState) []ChatCompletionsChunk {
if evt.Delta == "" {
return nil
}
reasoning := evt.Delta
return []ChatCompletionsChunk{makeChatDeltaChunk(state, ChatDelta{ReasoningContent: &reasoning})}
}
func resToChatHandleCompleted(evt *ResponsesStreamEvent, state *ResponsesEventToChatState) []ChatCompletionsChunk {
state.Finalized = true
finishReason := "stop"
if evt.Response != nil {
if evt.Response.Usage != nil {
u := evt.Response.Usage
usage := &ChatUsage{
PromptTokens: u.InputTokens,
CompletionTokens: u.OutputTokens,
TotalTokens: u.InputTokens + u.OutputTokens,
}
if u.InputTokensDetails != nil && u.InputTokensDetails.CachedTokens > 0 {
usage.PromptTokensDetails = &ChatTokenDetails{
CachedTokens: u.InputTokensDetails.CachedTokens,
}
}
state.Usage = usage
}
switch evt.Response.Status {
case "incomplete":
if evt.Response.IncompleteDetails != nil && evt.Response.IncompleteDetails.Reason == "max_output_tokens" {
finishReason = "length"
}
case "completed":
if state.SawToolCall {
finishReason = "tool_calls"
}
}
} else if state.SawToolCall {
finishReason = "tool_calls"
}
var chunks []ChatCompletionsChunk
chunks = append(chunks, makeChatFinishChunk(state, finishReason))
if state.IncludeUsage && state.Usage != nil {
chunks = append(chunks, ChatCompletionsChunk{
ID: state.ID,
Object: "chat.completion.chunk",
Created: state.Created,
Model: state.Model,
Choices: []ChatChunkChoice{},
Usage: state.Usage,
})
}
return chunks
}
func makeChatDeltaChunk(state *ResponsesEventToChatState, delta ChatDelta) ChatCompletionsChunk {
return ChatCompletionsChunk{
ID: state.ID,
Object: "chat.completion.chunk",
Created: state.Created,
Model: state.Model,
Choices: []ChatChunkChoice{{
Index: 0,
Delta: delta,
FinishReason: nil,
}},
}
}
func makeChatFinishChunk(state *ResponsesEventToChatState, finishReason string) ChatCompletionsChunk {
empty := ""
return ChatCompletionsChunk{
ID: state.ID,
Object: "chat.completion.chunk",
Created: state.Created,
Model: state.Model,
Choices: []ChatChunkChoice{{
Index: 0,
Delta: ChatDelta{Content: &empty},
FinishReason: &finishReason,
}},
}
}
// generateChatCmplID returns a "chatcmpl-" prefixed random hex ID.
func generateChatCmplID() string {
b := make([]byte, 12)
_, _ = rand.Read(b)
return "chatcmpl-" + hex.EncodeToString(b)
}

482
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/apicompat/types.go Normal file
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@@ -0,0 +1,482 @@
// Package apicompat provides type definitions and conversion utilities for
// translating between Anthropic Messages and OpenAI Responses API formats.
// It enables multi-protocol support so that clients using different API
// formats can be served through a unified gateway.
package apicompat
import "encoding/json"
// ---------------------------------------------------------------------------
// Anthropic Messages API types
// ---------------------------------------------------------------------------
// AnthropicRequest is the request body for POST /v1/messages.
type AnthropicRequest struct {
Model string `json:"model"`
MaxTokens int `json:"max_tokens"`
System json.RawMessage `json:"system,omitempty"` // string or []AnthropicContentBlock
Messages []AnthropicMessage `json:"messages"`
Tools []AnthropicTool `json:"tools,omitempty"`
Stream bool `json:"stream,omitempty"`
Temperature *float64 `json:"temperature,omitempty"`
TopP *float64 `json:"top_p,omitempty"`
StopSeqs []string `json:"stop_sequences,omitempty"`
Thinking *AnthropicThinking `json:"thinking,omitempty"`
ToolChoice json.RawMessage `json:"tool_choice,omitempty"`
OutputConfig *AnthropicOutputConfig `json:"output_config,omitempty"`
}
// AnthropicOutputConfig controls output generation parameters.
type AnthropicOutputConfig struct {
Effort string `json:"effort,omitempty"` // "low" | "medium" | "high"
}
// AnthropicThinking configures extended thinking in the Anthropic API.
type AnthropicThinking struct {
Type string `json:"type"` // "enabled" | "adaptive" | "disabled"
BudgetTokens int `json:"budget_tokens,omitempty"` // max thinking tokens
}
// AnthropicMessage is a single message in the Anthropic conversation.
type AnthropicMessage struct {
Role string `json:"role"` // "user" | "assistant"
Content json.RawMessage `json:"content"`
}
// AnthropicContentBlock is one block inside a message's content array.
type AnthropicContentBlock struct {
Type string `json:"type"`
// type=text
Text string `json:"text,omitempty"`
// type=thinking
Thinking string `json:"thinking,omitempty"`
// type=image
Source *AnthropicImageSource `json:"source,omitempty"`
// type=tool_use
ID string `json:"id,omitempty"`
Name string `json:"name,omitempty"`
Input json.RawMessage `json:"input,omitempty"`
// type=tool_result
ToolUseID string `json:"tool_use_id,omitempty"`
Content json.RawMessage `json:"content,omitempty"` // string or []AnthropicContentBlock
IsError bool `json:"is_error,omitempty"`
}
// AnthropicImageSource describes the source data for an image content block.
type AnthropicImageSource struct {
Type string `json:"type"` // "base64"
MediaType string `json:"media_type"`
Data string `json:"data"`
}
// AnthropicTool describes a tool available to the model.
type AnthropicTool struct {
Type string `json:"type,omitempty"` // e.g. "web_search_20250305" for server tools
Name string `json:"name"`
Description string `json:"description,omitempty"`
InputSchema json.RawMessage `json:"input_schema"` // JSON Schema object
}
// AnthropicResponse is the non-streaming response from POST /v1/messages.
type AnthropicResponse struct {
ID string `json:"id"`
Type string `json:"type"` // "message"
Role string `json:"role"` // "assistant"
Content []AnthropicContentBlock `json:"content"`
Model string `json:"model"`
StopReason string `json:"stop_reason"`
StopSequence *string `json:"stop_sequence,omitempty"`
Usage AnthropicUsage `json:"usage"`
}
// AnthropicUsage holds token counts in Anthropic format.
type AnthropicUsage struct {
InputTokens int `json:"input_tokens"`
OutputTokens int `json:"output_tokens"`
CacheCreationInputTokens int `json:"cache_creation_input_tokens"`
CacheReadInputTokens int `json:"cache_read_input_tokens"`
}
// ---------------------------------------------------------------------------
// Anthropic SSE event types
// ---------------------------------------------------------------------------
// AnthropicStreamEvent is a single SSE event in the Anthropic streaming protocol.
type AnthropicStreamEvent struct {
Type string `json:"type"`
// message_start
Message *AnthropicResponse `json:"message,omitempty"`
// content_block_start
Index *int `json:"index,omitempty"`
ContentBlock *AnthropicContentBlock `json:"content_block,omitempty"`
// content_block_delta
Delta *AnthropicDelta `json:"delta,omitempty"`
// message_delta
Usage *AnthropicUsage `json:"usage,omitempty"`
}
// AnthropicDelta carries incremental content in streaming events.
type AnthropicDelta struct {
Type string `json:"type,omitempty"` // "text_delta" | "input_json_delta" | "thinking_delta" | "signature_delta"
// text_delta
Text string `json:"text,omitempty"`
// input_json_delta
PartialJSON string `json:"partial_json,omitempty"`
// thinking_delta
Thinking string `json:"thinking,omitempty"`
// signature_delta
Signature string `json:"signature,omitempty"`
// message_delta fields
StopReason string `json:"stop_reason,omitempty"`
StopSequence *string `json:"stop_sequence,omitempty"`
}
// ---------------------------------------------------------------------------
// OpenAI Responses API types
// ---------------------------------------------------------------------------
// ResponsesRequest is the request body for POST /v1/responses.
type ResponsesRequest struct {
Model string `json:"model"`
Input json.RawMessage `json:"input"` // string or []ResponsesInputItem
MaxOutputTokens *int `json:"max_output_tokens,omitempty"`
Temperature *float64 `json:"temperature,omitempty"`
TopP *float64 `json:"top_p,omitempty"`
Stream bool `json:"stream,omitempty"`
Tools []ResponsesTool `json:"tools,omitempty"`
Include []string `json:"include,omitempty"`
Store *bool `json:"store,omitempty"`
Reasoning *ResponsesReasoning `json:"reasoning,omitempty"`
ToolChoice json.RawMessage `json:"tool_choice,omitempty"`
ServiceTier string `json:"service_tier,omitempty"`
}
// ResponsesReasoning configures reasoning effort in the Responses API.
type ResponsesReasoning struct {
Effort string `json:"effort"` // "low" | "medium" | "high"
Summary string `json:"summary,omitempty"` // "auto" | "concise" | "detailed"
}
// ResponsesInputItem is one item in the Responses API input array.
// The Type field determines which other fields are populated.
type ResponsesInputItem struct {
// Common
Type string `json:"type,omitempty"` // "" for role-based messages
// Role-based messages (system/user/assistant)
Role string `json:"role,omitempty"`
Content json.RawMessage `json:"content,omitempty"` // string or []ResponsesContentPart
// type=function_call
CallID string `json:"call_id,omitempty"`
Name string `json:"name,omitempty"`
Arguments string `json:"arguments,omitempty"`
ID string `json:"id,omitempty"`
// type=function_call_output
Output string `json:"output,omitempty"`
}
// ResponsesContentPart is a typed content part in a Responses message.
type ResponsesContentPart struct {
Type string `json:"type"` // "input_text" | "output_text" | "input_image"
Text string `json:"text,omitempty"`
ImageURL string `json:"image_url,omitempty"` // data URI for input_image
}
// ResponsesTool describes a tool in the Responses API.
type ResponsesTool struct {
Type string `json:"type"` // "function" | "web_search" | "local_shell" etc.
Name string `json:"name,omitempty"`
Description string `json:"description,omitempty"`
Parameters json.RawMessage `json:"parameters,omitempty"`
Strict *bool `json:"strict,omitempty"`
}
// ResponsesResponse is the non-streaming response from POST /v1/responses.
type ResponsesResponse struct {
ID string `json:"id"`
Object string `json:"object"` // "response"
Model string `json:"model"`
Status string `json:"status"` // "completed" | "incomplete" | "failed"
Output []ResponsesOutput `json:"output"`
Usage *ResponsesUsage `json:"usage,omitempty"`
// incomplete_details is present when status="incomplete"
IncompleteDetails *ResponsesIncompleteDetails `json:"incomplete_details,omitempty"`
// Error is present when status="failed"
Error *ResponsesError `json:"error,omitempty"`
}
// ResponsesError describes an error in a failed response.
type ResponsesError struct {
Code string `json:"code"`
Message string `json:"message"`
}
// ResponsesIncompleteDetails explains why a response is incomplete.
type ResponsesIncompleteDetails struct {
Reason string `json:"reason"` // "max_output_tokens" | "content_filter"
}
// ResponsesOutput is one output item in a Responses API response.
type ResponsesOutput struct {
Type string `json:"type"` // "message" | "reasoning" | "function_call" | "web_search_call"
// type=message
ID string `json:"id,omitempty"`
Role string `json:"role,omitempty"`
Content []ResponsesContentPart `json:"content,omitempty"`
Status string `json:"status,omitempty"`
// type=reasoning
EncryptedContent string `json:"encrypted_content,omitempty"`
Summary []ResponsesSummary `json:"summary,omitempty"`
// type=function_call
CallID string `json:"call_id,omitempty"`
Name string `json:"name,omitempty"`
Arguments string `json:"arguments,omitempty"`
// type=web_search_call
Action *WebSearchAction `json:"action,omitempty"`
}
// WebSearchAction describes the search action in a web_search_call output item.
type WebSearchAction struct {
Type string `json:"type,omitempty"` // "search"
Query string `json:"query,omitempty"` // primary search query
}
// ResponsesSummary is a summary text block inside a reasoning output.
type ResponsesSummary struct {
Type string `json:"type"` // "summary_text"
Text string `json:"text"`
}
// ResponsesUsage holds token counts in Responses API format.
type ResponsesUsage struct {
InputTokens int `json:"input_tokens"`
OutputTokens int `json:"output_tokens"`
TotalTokens int `json:"total_tokens"`
// Optional detailed breakdown
InputTokensDetails *ResponsesInputTokensDetails `json:"input_tokens_details,omitempty"`
OutputTokensDetails *ResponsesOutputTokensDetails `json:"output_tokens_details,omitempty"`
}
// ResponsesInputTokensDetails breaks down input token usage.
type ResponsesInputTokensDetails struct {
CachedTokens int `json:"cached_tokens,omitempty"`
}
// ResponsesOutputTokensDetails breaks down output token usage.
type ResponsesOutputTokensDetails struct {
ReasoningTokens int `json:"reasoning_tokens,omitempty"`
}
// ---------------------------------------------------------------------------
// Responses SSE event types
// ---------------------------------------------------------------------------
// ResponsesStreamEvent is a single SSE event in the Responses streaming protocol.
// The Type field corresponds to the "type" in the JSON payload.
type ResponsesStreamEvent struct {
Type string `json:"type"`
// response.created / response.completed / response.failed / response.incomplete
Response *ResponsesResponse `json:"response,omitempty"`
// response.output_item.added / response.output_item.done
Item *ResponsesOutput `json:"item,omitempty"`
// response.output_text.delta / response.output_text.done
OutputIndex int `json:"output_index,omitempty"`
ContentIndex int `json:"content_index,omitempty"`
Delta string `json:"delta,omitempty"`
Text string `json:"text,omitempty"`
ItemID string `json:"item_id,omitempty"`
// response.function_call_arguments.delta / done
CallID string `json:"call_id,omitempty"`
Name string `json:"name,omitempty"`
Arguments string `json:"arguments,omitempty"`
// response.reasoning_summary_text.delta / done
// Reuses Text/Delta fields above, SummaryIndex identifies which summary part
SummaryIndex int `json:"summary_index,omitempty"`
// error event fields
Code string `json:"code,omitempty"`
Param string `json:"param,omitempty"`
// Sequence number for ordering events
SequenceNumber int `json:"sequence_number,omitempty"`
}
// ---------------------------------------------------------------------------
// OpenAI Chat Completions API types
// ---------------------------------------------------------------------------
// ChatCompletionsRequest is the request body for POST /v1/chat/completions.
type ChatCompletionsRequest struct {
Model string `json:"model"`
Messages []ChatMessage `json:"messages"`
MaxTokens *int `json:"max_tokens,omitempty"`
MaxCompletionTokens *int `json:"max_completion_tokens,omitempty"`
Temperature *float64 `json:"temperature,omitempty"`
TopP *float64 `json:"top_p,omitempty"`
Stream bool `json:"stream,omitempty"`
StreamOptions *ChatStreamOptions `json:"stream_options,omitempty"`
Tools []ChatTool `json:"tools,omitempty"`
ToolChoice json.RawMessage `json:"tool_choice,omitempty"`
ReasoningEffort string `json:"reasoning_effort,omitempty"` // "low" | "medium" | "high"
ServiceTier string `json:"service_tier,omitempty"`
Stop json.RawMessage `json:"stop,omitempty"` // string or []string
// Legacy function calling (deprecated but still supported)
Functions []ChatFunction `json:"functions,omitempty"`
FunctionCall json.RawMessage `json:"function_call,omitempty"`
}
// ChatStreamOptions configures streaming behavior.
type ChatStreamOptions struct {
IncludeUsage bool `json:"include_usage,omitempty"`
}
// ChatMessage is a single message in the Chat Completions conversation.
type ChatMessage struct {
Role string `json:"role"` // "system" | "user" | "assistant" | "tool" | "function"
Content json.RawMessage `json:"content,omitempty"`
ReasoningContent string `json:"reasoning_content,omitempty"`
Name string `json:"name,omitempty"`
ToolCalls []ChatToolCall `json:"tool_calls,omitempty"`
ToolCallID string `json:"tool_call_id,omitempty"`
// Legacy function calling
FunctionCall *ChatFunctionCall `json:"function_call,omitempty"`
}
// ChatContentPart is a typed content part in a multi-modal message.
type ChatContentPart struct {
Type string `json:"type"` // "text" | "image_url"
Text string `json:"text,omitempty"`
ImageURL *ChatImageURL `json:"image_url,omitempty"`
}
// ChatImageURL contains the URL for an image content part.
type ChatImageURL struct {
URL string `json:"url"`
Detail string `json:"detail,omitempty"` // "auto" | "low" | "high"
}
// ChatTool describes a tool available to the model.
type ChatTool struct {
Type string `json:"type"` // "function"
Function *ChatFunction `json:"function,omitempty"`
}
// ChatFunction describes a function tool definition.
type ChatFunction struct {
Name string `json:"name"`
Description string `json:"description,omitempty"`
Parameters json.RawMessage `json:"parameters,omitempty"`
Strict *bool `json:"strict,omitempty"`
}
// ChatToolCall represents a tool call made by the assistant.
// Index is only populated in streaming chunks (omitted in non-streaming responses).
type ChatToolCall struct {
Index *int `json:"index,omitempty"`
ID string `json:"id,omitempty"`
Type string `json:"type,omitempty"` // "function"
Function ChatFunctionCall `json:"function"`
}
// ChatFunctionCall contains the function name and arguments.
type ChatFunctionCall struct {
Name string `json:"name"`
Arguments string `json:"arguments"`
}
// ChatCompletionsResponse is the non-streaming response from POST /v1/chat/completions.
type ChatCompletionsResponse struct {
ID string `json:"id"`
Object string `json:"object"` // "chat.completion"
Created int64 `json:"created"`
Model string `json:"model"`
Choices []ChatChoice `json:"choices"`
Usage *ChatUsage `json:"usage,omitempty"`
SystemFingerprint string `json:"system_fingerprint,omitempty"`
ServiceTier string `json:"service_tier,omitempty"`
}
// ChatChoice is a single completion choice.
type ChatChoice struct {
Index int `json:"index"`
Message ChatMessage `json:"message"`
FinishReason string `json:"finish_reason"` // "stop" | "length" | "tool_calls" | "content_filter"
}
// ChatUsage holds token counts in Chat Completions format.
type ChatUsage struct {
PromptTokens int `json:"prompt_tokens"`
CompletionTokens int `json:"completion_tokens"`
TotalTokens int `json:"total_tokens"`
PromptTokensDetails *ChatTokenDetails `json:"prompt_tokens_details,omitempty"`
}
// ChatTokenDetails provides a breakdown of token usage.
type ChatTokenDetails struct {
CachedTokens int `json:"cached_tokens,omitempty"`
}
// ChatCompletionsChunk is a single streaming chunk from POST /v1/chat/completions.
type ChatCompletionsChunk struct {
ID string `json:"id"`
Object string `json:"object"` // "chat.completion.chunk"
Created int64 `json:"created"`
Model string `json:"model"`
Choices []ChatChunkChoice `json:"choices"`
Usage *ChatUsage `json:"usage,omitempty"`
SystemFingerprint string `json:"system_fingerprint,omitempty"`
ServiceTier string `json:"service_tier,omitempty"`
}
// ChatChunkChoice is a single choice in a streaming chunk.
type ChatChunkChoice struct {
Index int `json:"index"`
Delta ChatDelta `json:"delta"`
FinishReason *string `json:"finish_reason"` // pointer: null when not final
}
// ChatDelta carries incremental content in a streaming chunk.
type ChatDelta struct {
Role string `json:"role,omitempty"`
Content *string `json:"content,omitempty"` // pointer: omit when not present, null vs "" matters
ReasoningContent *string `json:"reasoning_content,omitempty"`
ToolCalls []ChatToolCall `json:"tool_calls,omitempty"`
}
// ---------------------------------------------------------------------------
// Shared constants
// ---------------------------------------------------------------------------
// minMaxOutputTokens is the floor for max_output_tokens in a Responses request.
// Very small values may cause upstream API errors, so we enforce a minimum.
const minMaxOutputTokens = 128

152
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/claude/constants.go Normal file
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@@ -0,0 +1,152 @@
// Package claude provides constants and helpers for Claude API integration.
package claude
// Claude Code 客户端相关常量
// Beta header 常量
const (
BetaOAuth = "oauth-2025-04-20"
BetaClaudeCode = "claude-code-20250219"
BetaInterleavedThinking = "interleaved-thinking-2025-05-14"
BetaFineGrainedToolStreaming = "fine-grained-tool-streaming-2025-05-14"
BetaTokenCounting = "token-counting-2024-11-01"
BetaContext1M = "context-1m-2025-08-07"
BetaFastMode = "fast-mode-2026-02-01"
)
// DroppedBetas 是转发时需要从 anthropic-beta header 中移除的 beta token 列表。
// 这些 token 是客户端特有的，不应透传给上游 API。
var DroppedBetas = []string{}
// DefaultBetaHeader Claude Code 客户端默认的 anthropic-beta header
const DefaultBetaHeader = BetaClaudeCode + "," + BetaOAuth + "," + BetaInterleavedThinking + "," + BetaFineGrainedToolStreaming
// MessageBetaHeaderNoTools /v1/messages 在无工具时的 beta header
//
// NOTE: Claude Code OAuth credentials are scoped to Claude Code. When we "mimic"
// Claude Code for non-Claude-Code clients, we must include the claude-code beta
// even if the request doesn't use tools, otherwise upstream may reject the
// request as a non-Claude-Code API request.
const MessageBetaHeaderNoTools = BetaClaudeCode + "," + BetaOAuth + "," + BetaInterleavedThinking
// MessageBetaHeaderWithTools /v1/messages 在有工具时的 beta header
const MessageBetaHeaderWithTools = BetaClaudeCode + "," + BetaOAuth + "," + BetaInterleavedThinking
// CountTokensBetaHeader count_tokens 请求使用的 anthropic-beta header
const CountTokensBetaHeader = BetaClaudeCode + "," + BetaOAuth + "," + BetaInterleavedThinking + "," + BetaTokenCounting
// HaikuBetaHeader Haiku 模型使用的 anthropic-beta header（不需要 claude-code beta）
const HaikuBetaHeader = BetaOAuth + "," + BetaInterleavedThinking
// APIKeyBetaHeader API-key 账号建议使用的 anthropic-beta header（不包含 oauth）
const APIKeyBetaHeader = BetaClaudeCode + "," + BetaInterleavedThinking + "," + BetaFineGrainedToolStreaming
// APIKeyHaikuBetaHeader Haiku 模型在 API-key 账号下使用的 anthropic-beta header（不包含 oauth / claude-code）
const APIKeyHaikuBetaHeader = BetaInterleavedThinking
// DefaultHeaders 是 Claude Code 客户端默认请求头。
var DefaultHeaders = map[string]string{
// Keep these in sync with recent Claude CLI traffic to reduce the chance
// that Claude Code-scoped OAuth credentials are rejected as "non-CLI" usage.
"User-Agent": "claude-cli/2.1.22 (external, cli)",
"X-Stainless-Lang": "js",
"X-Stainless-Package-Version": "0.70.0",
"X-Stainless-OS": "Linux",
"X-Stainless-Arch": "arm64",
"X-Stainless-Runtime": "node",
"X-Stainless-Runtime-Version": "v24.13.0",
"X-Stainless-Retry-Count": "0",
"X-Stainless-Timeout": "600",
"X-App": "cli",
"Anthropic-Dangerous-Direct-Browser-Access": "true",
}
// Model 表示一个 Claude 模型
type Model struct {
ID string `json:"id"`
Type string `json:"type"`
DisplayName string `json:"display_name"`
CreatedAt string `json:"created_at"`
}
// DefaultModels Claude Code 客户端支持的默认模型列表
var DefaultModels = []Model{
{
ID: "claude-opus-4-5-20251101",
Type: "model",
DisplayName: "Claude Opus 4.5",
CreatedAt: "2025-11-01T00:00:00Z",
},
{
ID: "claude-opus-4-6",
Type: "model",
DisplayName: "Claude Opus 4.6",
CreatedAt: "2026-02-06T00:00:00Z",
},
{
ID: "claude-sonnet-4-6",
Type: "model",
DisplayName: "Claude Sonnet 4.6",
CreatedAt: "2026-02-18T00:00:00Z",
},
{
ID: "claude-sonnet-4-5-20250929",
Type: "model",
DisplayName: "Claude Sonnet 4.5",
CreatedAt: "2025-09-29T00:00:00Z",
},
{
ID: "claude-haiku-4-5-20251001",
Type: "model",
DisplayName: "Claude Haiku 4.5",
CreatedAt: "2025-10-01T00:00:00Z",
},
}
// DefaultModelIDs 返回默认模型的 ID 列表
func DefaultModelIDs() []string {
ids := make([]string, len(DefaultModels))
for i, m := range DefaultModels {
ids[i] = m.ID
}
return ids
}
// DefaultTestModel 测试时使用的默认模型
const DefaultTestModel = "claude-sonnet-4-5-20250929"
// ModelIDOverrides Claude OAuth 请求需要的模型 ID 映射
var ModelIDOverrides = map[string]string{
"claude-sonnet-4-5": "claude-sonnet-4-5-20250929",
"claude-opus-4-5": "claude-opus-4-5-20251101",
"claude-haiku-4-5": "claude-haiku-4-5-20251001",
}
// ModelIDReverseOverrides 用于将上游模型 ID 还原为短名
var ModelIDReverseOverrides = map[string]string{
"claude-sonnet-4-5-20250929": "claude-sonnet-4-5",
"claude-opus-4-5-20251101": "claude-opus-4-5",
"claude-haiku-4-5-20251001": "claude-haiku-4-5",
}
// NormalizeModelID 根据 Claude OAuth 规则映射模型
func NormalizeModelID(id string) string {
if id == "" {
return id
}
if mapped, ok := ModelIDOverrides[id]; ok {
return mapped
}
return id
}
// DenormalizeModelID 将上游模型 ID 转换为短名
func DenormalizeModelID(id string) string {
if id == "" {
return id
}
if mapped, ok := ModelIDReverseOverrides[id]; ok {
return mapped
}
return id
}

58
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// Package ctxkey 定义用于 context.Value 的类型安全 key
package ctxkey
// Key 定义 context key 的类型，避免使用内置 string 类型（staticcheck SA1029）
type Key string
const (
// ForcePlatform 强制平台（用于 /antigravity 路由），由 middleware.ForcePlatform 设置
ForcePlatform Key = "ctx_force_platform"
// RequestID 为服务端生成/透传的请求 ID。
RequestID Key = "ctx_request_id"
// ClientRequestID 客户端请求的唯一标识，用于追踪请求全生命周期（用于 Ops 监控与排障）。
ClientRequestID Key = "ctx_client_request_id"
// Model 请求模型标识（用于统一请求链路日志字段）。
Model Key = "ctx_model"
// Platform 当前请求最终命中的平台（用于统一请求链路日志字段）。
Platform Key = "ctx_platform"
// AccountID 当前请求最终命中的账号 ID（用于统一请求链路日志字段）。
AccountID Key = "ctx_account_id"
// RetryCount 表示当前请求在网关层的重试次数（用于 Ops 记录与排障）。
RetryCount Key = "ctx_retry_count"
// AccountSwitchCount 表示请求过程中发生的账号切换次数
AccountSwitchCount Key = "ctx_account_switch_count"
// IsClaudeCodeClient 标识当前请求是否来自 Claude Code 客户端
IsClaudeCodeClient Key = "ctx_is_claude_code_client"
// ThinkingEnabled 标识当前请求是否开启 thinking（用于 Antigravity 最终模型名推导与模型维度限流）
ThinkingEnabled Key = "ctx_thinking_enabled"
// Group 认证后的分组信息，由 API Key 认证中间件设置
Group Key = "ctx_group"
// IsMaxTokensOneHaikuRequest 标识当前请求是否为 max_tokens=1 + haiku 模型的探测请求
// 用于 ClaudeCodeOnly 验证绕过（绕过 system prompt 检查，但仍需验证 User-Agent）
IsMaxTokensOneHaikuRequest Key = "ctx_is_max_tokens_one_haiku"
// SingleAccountRetry 标识当前请求处于单账号 503 退避重试模式。
// 在此模式下，Service 层的模型限流预检查将等待限流过期而非直接切换账号。
SingleAccountRetry Key = "ctx_single_account_retry"
// PrefetchedStickyAccountID 标识上游（通常 handler）预取到的 sticky session 账号 ID。
// Service 层可复用该值，避免同请求链路重复读取 Redis。
PrefetchedStickyAccountID Key = "ctx_prefetched_sticky_account_id"
// PrefetchedStickyGroupID 标识上游预取 sticky session 时所使用的分组 ID。
// Service 层仅在分组匹配时复用 PrefetchedStickyAccountID，避免分组切换重试误用旧 sticky。
PrefetchedStickyGroupID Key = "ctx_prefetched_sticky_group_id"
// ClaudeCodeVersion stores the extracted Claude Code version from User-Agent (e.g. "2.1.22")
ClaudeCodeVersion Key = "ctx_claude_code_version"
)

158
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package errors
import (
"errors"
"fmt"
"net/http"
)
const (
UnknownCode = http.StatusInternalServerError
UnknownReason = ""
UnknownMessage = "internal error"
)
type Status struct {
Code int32 `json:"code"`
Reason string `json:"reason,omitempty"`
Message string `json:"message"`
Metadata map[string]string `json:"metadata,omitempty"`
}
// ApplicationError is the standard error type used to control HTTP responses.
//
// Code is expected to be an HTTP status code (e.g. 400/401/403/404/409/500).
type ApplicationError struct {
Status
cause error
}
// Error is kept for backwards compatibility within this package.
type Error = ApplicationError
func (e *ApplicationError) Error() string {
if e == nil {
return "<nil>"
}
if e.cause == nil {
return fmt.Sprintf("error: code=%d reason=%q message=%q metadata=%v", e.Code, e.Reason, e.Message, e.Metadata)
}
return fmt.Sprintf("error: code=%d reason=%q message=%q metadata=%v cause=%v", e.Code, e.Reason, e.Message, e.Metadata, e.cause)
}
// Unwrap provides compatibility for Go 1.13 error chains.
func (e *ApplicationError) Unwrap() error { return e.cause }
// Is matches each error in the chain with the target value.
func (e *ApplicationError) Is(err error) bool {
if se := new(ApplicationError); errors.As(err, &se) {
return se.Code == e.Code && se.Reason == e.Reason
}
return false
}
// WithCause attaches the underlying cause of the error.
func (e *ApplicationError) WithCause(cause error) *ApplicationError {
err := Clone(e)
err.cause = cause
return err
}
// WithMetadata deep-copies the given metadata map.
func (e *ApplicationError) WithMetadata(md map[string]string) *ApplicationError {
err := Clone(e)
if md == nil {
err.Metadata = nil
return err
}
err.Metadata = make(map[string]string, len(md))
for k, v := range md {
err.Metadata[k] = v
}
return err
}
// New returns an error object for the code, message.
func New(code int, reason, message string) *ApplicationError {
return &ApplicationError{
Status: Status{
Code: int32(code),
Message: message,
Reason: reason,
},
}
}
// Newf New(code fmt.Sprintf(format, a...))
func Newf(code int, reason, format string, a ...any) *ApplicationError {
return New(code, reason, fmt.Sprintf(format, a...))
}
// Errorf returns an error object for the code, message and error info.
func Errorf(code int, reason, format string, a ...any) error {
return New(code, reason, fmt.Sprintf(format, a...))
}
// Code returns the http code for an error.
// It supports wrapped errors.
func Code(err error) int {
if err == nil {
return http.StatusOK
}
return int(FromError(err).Code)
}
// Reason returns the reason for a particular error.
// It supports wrapped errors.
func Reason(err error) string {
if err == nil {
return UnknownReason
}
return FromError(err).Reason
}
// Message returns the message for a particular error.
// It supports wrapped errors.
func Message(err error) string {
if err == nil {
return ""
}
return FromError(err).Message
}
// Clone deep clone error to a new error.
func Clone(err *ApplicationError) *ApplicationError {
if err == nil {
return nil
}
var metadata map[string]string
if err.Metadata != nil {
metadata = make(map[string]string, len(err.Metadata))
for k, v := range err.Metadata {
metadata[k] = v
}
}
return &ApplicationError{
cause: err.cause,
Status: Status{
Code: err.Code,
Reason: err.Reason,
Message: err.Message,
Metadata: metadata,
},
}
}
// FromError tries to convert an error to *ApplicationError.
// It supports wrapped errors.
func FromError(err error) *ApplicationError {
if err == nil {
return nil
}
if se := new(ApplicationError); errors.As(err, &se) {
return se
}
// Fall back to a generic internal error.
return New(UnknownCode, UnknownReason, UnknownMessage).WithCause(err)
}

183
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/errors/errors_test.go Normal file
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//go:build unit
package errors
import (
stderrors "errors"
"fmt"
"io"
"net/http"
"testing"
"github.com/stretchr/testify/require"
)
func TestApplicationError_Basics(t *testing.T) {
tests := []struct {
name string
err *ApplicationError
want Status
wantIs bool
target error
wrapped error
}{
{
name: "new",
err: New(400, "BAD_REQUEST", "invalid input"),
want: Status{
Code: 400,
Reason: "BAD_REQUEST",
Message: "invalid input",
},
},
{
name: "is_matches_code_and_reason",
err: New(401, "UNAUTHORIZED", "nope"),
want: Status{Code: 401, Reason: "UNAUTHORIZED", Message: "nope"},
target: New(401, "UNAUTHORIZED", "ignored message"),
wantIs: true,
},
{
name: "is_does_not_match_reason",
err: New(401, "UNAUTHORIZED", "nope"),
want: Status{Code: 401, Reason: "UNAUTHORIZED", Message: "nope"},
target: New(401, "DIFFERENT", "ignored message"),
wantIs: false,
},
{
name: "from_error_unwraps_wrapped_application_error",
err: New(404, "NOT_FOUND", "missing"),
wrapped: fmt.Errorf("wrap: %w", New(404, "NOT_FOUND", "missing")),
want: Status{
Code: 404,
Reason: "NOT_FOUND",
Message: "missing",
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if tt.err != nil {
require.Equal(t, tt.want, tt.err.Status)
}
if tt.target != nil {
require.Equal(t, tt.wantIs, stderrors.Is(tt.err, tt.target))
}
if tt.wrapped != nil {
got := FromError(tt.wrapped)
require.Equal(t, tt.want, got.Status)
}
})
}
}
func TestApplicationError_WithMetadataDeepCopy(t *testing.T) {
tests := []struct {
name string
md map[string]string
}{
{name: "non_nil", md: map[string]string{"a": "1"}},
{name: "nil", md: nil},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
appErr := BadRequest("BAD_REQUEST", "invalid input").WithMetadata(tt.md)
if tt.md == nil {
require.Nil(t, appErr.Metadata)
return
}
tt.md["a"] = "changed"
require.Equal(t, "1", appErr.Metadata["a"])
})
}
}
func TestFromError_Generic(t *testing.T) {
tests := []struct {
name string
err error
wantCode int32
wantReason string
wantMsg string
}{
{
name: "plain_error",
err: stderrors.New("boom"),
wantCode: UnknownCode,
wantReason: UnknownReason,
wantMsg: UnknownMessage,
},
{
name: "wrapped_plain_error",
err: fmt.Errorf("wrap: %w", io.EOF),
wantCode: UnknownCode,
wantReason: UnknownReason,
wantMsg: UnknownMessage,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := FromError(tt.err)
require.Equal(t, tt.wantCode, got.Code)
require.Equal(t, tt.wantReason, got.Reason)
require.Equal(t, tt.wantMsg, got.Message)
require.Equal(t, tt.err, got.Unwrap())
})
}
}
func TestToHTTP(t *testing.T) {
tests := []struct {
name string
err error
wantStatusCode int
wantBody Status
}{
{
name: "nil_error",
err: nil,
wantStatusCode: http.StatusOK,
wantBody: Status{Code: int32(http.StatusOK)},
},
{
name: "application_error",
err: Forbidden("FORBIDDEN", "no access"),
wantStatusCode: http.StatusForbidden,
wantBody: Status{
Code: int32(http.StatusForbidden),
Reason: "FORBIDDEN",
Message: "no access",
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
code, body := ToHTTP(tt.err)
require.Equal(t, tt.wantStatusCode, code)
require.Equal(t, tt.wantBody, body)
})
}
}
func TestToHTTP_MetadataDeepCopy(t *testing.T) {
md := map[string]string{"k": "v"}
appErr := BadRequest("BAD_REQUEST", "invalid").WithMetadata(md)
code, body := ToHTTP(appErr)
require.Equal(t, http.StatusBadRequest, code)
require.Equal(t, "v", body.Metadata["k"])
md["k"] = "changed"
require.Equal(t, "v", body.Metadata["k"])
appErr.Metadata["k"] = "changed-again"
require.Equal(t, "v", body.Metadata["k"])
}

31
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/errors/http.go Normal file
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package errors
import "net/http"
// ToHTTP converts an error into an HTTP status code and a JSON-serializable body.
//
// The returned body matches the project's Status shape:
// { code, reason, message, metadata }.
func ToHTTP(err error) (statusCode int, body Status) {
if err == nil {
return http.StatusOK, Status{Code: int32(http.StatusOK)}
}
appErr := FromError(err)
if appErr == nil {
return http.StatusOK, Status{Code: int32(http.StatusOK)}
}
body = Status{
Code: appErr.Code,
Reason: appErr.Reason,
Message: appErr.Message,
}
if appErr.Metadata != nil {
body.Metadata = make(map[string]string, len(appErr.Metadata))
for k, v := range appErr.Metadata {
body.Metadata[k] = v
}
}
return int(appErr.Code), body
}

115
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/errors/types.go Normal file
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// Package errors provides application error types and helpers.
// nolint:mnd
package errors
import "net/http"
// BadRequest new BadRequest error that is mapped to a 400 response.
func BadRequest(reason, message string) *ApplicationError {
return New(http.StatusBadRequest, reason, message)
}
// IsBadRequest determines if err is an error which indicates a BadRequest error.
// It supports wrapped errors.
func IsBadRequest(err error) bool {
return Code(err) == http.StatusBadRequest
}
// TooManyRequests new TooManyRequests error that is mapped to a 429 response.
func TooManyRequests(reason, message string) *ApplicationError {
return New(http.StatusTooManyRequests, reason, message)
}
// IsTooManyRequests determines if err is an error which indicates a TooManyRequests error.
// It supports wrapped errors.
func IsTooManyRequests(err error) bool {
return Code(err) == http.StatusTooManyRequests
}
// Unauthorized new Unauthorized error that is mapped to a 401 response.
func Unauthorized(reason, message string) *ApplicationError {
return New(http.StatusUnauthorized, reason, message)
}
// IsUnauthorized determines if err is an error which indicates an Unauthorized error.
// It supports wrapped errors.
func IsUnauthorized(err error) bool {
return Code(err) == http.StatusUnauthorized
}
// Forbidden new Forbidden error that is mapped to a 403 response.
func Forbidden(reason, message string) *ApplicationError {
return New(http.StatusForbidden, reason, message)
}
// IsForbidden determines if err is an error which indicates a Forbidden error.
// It supports wrapped errors.
func IsForbidden(err error) bool {
return Code(err) == http.StatusForbidden
}
// NotFound new NotFound error that is mapped to a 404 response.
func NotFound(reason, message string) *ApplicationError {
return New(http.StatusNotFound, reason, message)
}
// IsNotFound determines if err is an error which indicates an NotFound error.
// It supports wrapped errors.
func IsNotFound(err error) bool {
return Code(err) == http.StatusNotFound
}
// Conflict new Conflict error that is mapped to a 409 response.
func Conflict(reason, message string) *ApplicationError {
return New(http.StatusConflict, reason, message)
}
// IsConflict determines if err is an error which indicates a Conflict error.
// It supports wrapped errors.
func IsConflict(err error) bool {
return Code(err) == http.StatusConflict
}
// InternalServer new InternalServer error that is mapped to a 500 response.
func InternalServer(reason, message string) *ApplicationError {
return New(http.StatusInternalServerError, reason, message)
}
// IsInternalServer determines if err is an error which indicates an Internal error.
// It supports wrapped errors.
func IsInternalServer(err error) bool {
return Code(err) == http.StatusInternalServerError
}
// ServiceUnavailable new ServiceUnavailable error that is mapped to an HTTP 503 response.
func ServiceUnavailable(reason, message string) *ApplicationError {
return New(http.StatusServiceUnavailable, reason, message)
}
// IsServiceUnavailable determines if err is an error which indicates an Unavailable error.
// It supports wrapped errors.
func IsServiceUnavailable(err error) bool {
return Code(err) == http.StatusServiceUnavailable
}
// GatewayTimeout new GatewayTimeout error that is mapped to an HTTP 504 response.
func GatewayTimeout(reason, message string) *ApplicationError {
return New(http.StatusGatewayTimeout, reason, message)
}
// IsGatewayTimeout determines if err is an error which indicates a GatewayTimeout error.
// It supports wrapped errors.
func IsGatewayTimeout(err error) bool {
return Code(err) == http.StatusGatewayTimeout
}
// ClientClosed new ClientClosed error that is mapped to an HTTP 499 response.
func ClientClosed(reason, message string) *ApplicationError {
return New(499, reason, message)
}
// IsClientClosed determines if err is an error which indicates a IsClientClosed error.
// It supports wrapped errors.
func IsClientClosed(err error) bool {
return Code(err) == 499
}

43
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/gemini/models.go Normal file
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// Package gemini provides minimal fallback model metadata for Gemini native endpoints.
// It is used when upstream model listing is unavailable (e.g. OAuth token missing AI Studio scopes).
package gemini
type Model struct {
Name string `json:"name"`
DisplayName string `json:"displayName,omitempty"`
Description string `json:"description,omitempty"`
SupportedGenerationMethods []string `json:"supportedGenerationMethods,omitempty"`
}
type ModelsListResponse struct {
Models []Model `json:"models"`
}
func DefaultModels() []Model {
methods := []string{"generateContent", "streamGenerateContent"}
return []Model{
{Name: "models/gemini-2.0-flash", SupportedGenerationMethods: methods},
{Name: "models/gemini-2.5-flash", SupportedGenerationMethods: methods},
{Name: "models/gemini-2.5-flash-image", SupportedGenerationMethods: methods},
{Name: "models/gemini-2.5-pro", SupportedGenerationMethods: methods},
{Name: "models/gemini-3-flash-preview", SupportedGenerationMethods: methods},
{Name: "models/gemini-3-pro-preview", SupportedGenerationMethods: methods},
{Name: "models/gemini-3.1-pro-preview", SupportedGenerationMethods: methods},
{Name: "models/gemini-3.1-flash-image", SupportedGenerationMethods: methods},
}
}
func FallbackModelsList() ModelsListResponse {
return ModelsListResponse{Models: DefaultModels()}
}
func FallbackModel(model string) Model {
methods := []string{"generateContent", "streamGenerateContent"}
if model == "" {
return Model{Name: "models/unknown", SupportedGenerationMethods: methods}
}
if len(model) >= 7 && model[:7] == "models/" {
return Model{Name: model, SupportedGenerationMethods: methods}
}
return Model{Name: "models/" + model, SupportedGenerationMethods: methods}
}

28
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/gemini/models_test.go Normal file
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package gemini
import "testing"
func TestDefaultModels_ContainsImageModels(t *testing.T) {
t.Parallel()
models := DefaultModels()
byName := make(map[string]Model, len(models))
for _, model := range models {
byName[model.Name] = model
}
required := []string{
"models/gemini-2.5-flash-image",
"models/gemini-3.1-flash-image",
}
for _, name := range required {
model, ok := byName[name]
if !ok {
t.Fatalf("expected fallback model %q to exist", name)
}
if len(model.SupportedGenerationMethods) == 0 {
t.Fatalf("expected fallback model %q to advertise generation methods", name)
}
}
}

82
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/geminicli/codeassist_types.go Normal file
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package geminicli
import (
"bytes"
"encoding/json"
)
// LoadCodeAssistRequest matches done-hub's internal Code Assist call.
type LoadCodeAssistRequest struct {
Metadata LoadCodeAssistMetadata `json:"metadata"`
}
type LoadCodeAssistMetadata struct {
IDEType string `json:"ideType"`
Platform string `json:"platform"`
PluginType string `json:"pluginType"`
}
type TierInfo struct {
ID string `json:"id"`
}
// UnmarshalJSON supports both legacy string tiers and object tiers.
func (t *TierInfo) UnmarshalJSON(data []byte) error {
data = bytes.TrimSpace(data)
if len(data) == 0 || string(data) == "null" {
return nil
}
if data[0] == '"' {
var id string
if err := json.Unmarshal(data, &id); err != nil {
return err
}
t.ID = id
return nil
}
type alias TierInfo
var decoded alias
if err := json.Unmarshal(data, &decoded); err != nil {
return err
}
*t = TierInfo(decoded)
return nil
}
type LoadCodeAssistResponse struct {
CurrentTier *TierInfo `json:"currentTier,omitempty"`
PaidTier *TierInfo `json:"paidTier,omitempty"`
CloudAICompanionProject string `json:"cloudaicompanionProject,omitempty"`
AllowedTiers []AllowedTier `json:"allowedTiers,omitempty"`
}
// GetTier extracts tier ID, prioritizing paidTier over currentTier
func (r *LoadCodeAssistResponse) GetTier() string {
if r.PaidTier != nil && r.PaidTier.ID != "" {
return r.PaidTier.ID
}
if r.CurrentTier != nil {
return r.CurrentTier.ID
}
return ""
}
type AllowedTier struct {
ID string `json:"id"`
IsDefault bool `json:"isDefault,omitempty"`
}
type OnboardUserRequest struct {
TierID string `json:"tierId"`
Metadata LoadCodeAssistMetadata `json:"metadata"`
}
type OnboardUserResponse struct {
Done bool `json:"done"`
Response *OnboardUserResultData `json:"response,omitempty"`
Name string `json:"name,omitempty"`
}
type OnboardUserResultData struct {
CloudAICompanionProject any `json:"cloudaicompanionProject,omitempty"`
}

50
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/geminicli/constants.go Normal file
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// Package geminicli provides helpers for interacting with Gemini CLI tools.
package geminicli
import "time"
const (
AIStudioBaseURL = "https://generativelanguage.googleapis.com"
GeminiCliBaseURL = "https://cloudcode-pa.googleapis.com"
AuthorizeURL = "https://accounts.google.com/o/oauth2/v2/auth"
TokenURL = "https://oauth2.googleapis.com/token"
// AIStudioOAuthRedirectURI is the default redirect URI used for AI Studio OAuth.
// This matches the "copy/paste callback URL" flow used by OpenAI OAuth in this project.
// Note: You still need to register this redirect URI in your Google OAuth client
// unless you use an OAuth client type that permits localhost redirect URIs.
AIStudioOAuthRedirectURI = "http://localhost:1455/auth/callback"
// DefaultScopes for Code Assist (includes cloud-platform for API access plus userinfo scopes)
// Required by Google's Code Assist API.
DefaultCodeAssistScopes = "https://www.googleapis.com/auth/cloud-platform https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/userinfo.profile"
// DefaultScopes for AI Studio (uses generativelanguage API with OAuth)
// Reference: https://ai.google.dev/gemini-api/docs/oauth
// For regular Google accounts, supports API calls to generativelanguage.googleapis.com
// Note: Google Auth platform currently documents the OAuth scope as
// https://www.googleapis.com/auth/generative-language.retriever (often with cloud-platform).
DefaultAIStudioScopes = "https://www.googleapis.com/auth/cloud-platform https://www.googleapis.com/auth/generative-language.retriever"
// DefaultGoogleOneScopes (DEPRECATED, no longer used)
// Google One now always uses the built-in Gemini CLI client with DefaultCodeAssistScopes.
// This constant is kept for backward compatibility but is not actively used.
DefaultGoogleOneScopes = "https://www.googleapis.com/auth/cloud-platform https://www.googleapis.com/auth/generative-language.retriever https://www.googleapis.com/auth/drive.readonly https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/userinfo.profile"
// GeminiCLIRedirectURI is the redirect URI used by Gemini CLI for Code Assist OAuth.
GeminiCLIRedirectURI = "https://codeassist.google.com/authcode"
// GeminiCLIOAuthClientID/Secret are placeholders for built-in OAuth credentials.
// Set real values through deployment configuration when needed.
GeminiCLIOAuthClientID = "replace-with-your-gemini-cli-client-id"
GeminiCLIOAuthClientSecret = "replace-with-your-gemini-cli-client-secret"
// GeminiCLIOAuthClientSecretEnv is the environment variable name for the built-in client secret.
GeminiCLIOAuthClientSecretEnv = "GEMINI_CLI_OAUTH_CLIENT_SECRET"
SessionTTL = 30 * time.Minute
// GeminiCLIUserAgent mimics Gemini CLI to maximize compatibility with internal endpoints.
GeminiCLIUserAgent = "GeminiCLI/0.1.5 (Windows; AMD64)"
)

157
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/geminicli/drive_client.go Normal file
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package geminicli
import (
"context"
"encoding/json"
"fmt"
"math/rand"
"net/http"
"strconv"
"time"
"github.com/Wei-Shaw/sub2api/internal/pkg/httpclient"
)
// DriveStorageInfo represents Google Drive storage quota information
type DriveStorageInfo struct {
Limit int64 `json:"limit"` // Storage limit in bytes
Usage int64 `json:"usage"` // Current usage in bytes
}
// DriveClient interface for Google Drive API operations
type DriveClient interface {
GetStorageQuota(ctx context.Context, accessToken, proxyURL string) (*DriveStorageInfo, error)
}
type driveClient struct{}
// NewDriveClient creates a new Drive API client
func NewDriveClient() DriveClient {
return &driveClient{}
}
// GetStorageQuota fetches storage quota from Google Drive API
func (c *driveClient) GetStorageQuota(ctx context.Context, accessToken, proxyURL string) (*DriveStorageInfo, error) {
const driveAPIURL = "https://www.googleapis.com/drive/v3/about?fields=storageQuota"
req, err := http.NewRequestWithContext(ctx, "GET", driveAPIURL, nil)
if err != nil {
return nil, fmt.Errorf("failed to create request: %w", err)
}
req.Header.Set("Authorization", "Bearer "+accessToken)
// Get HTTP client with proxy support
client, err := httpclient.GetClient(httpclient.Options{
ProxyURL: proxyURL,
Timeout: 10 * time.Second,
})
if err != nil {
return nil, fmt.Errorf("failed to create HTTP client: %w", err)
}
sleepWithContext := func(d time.Duration) error {
timer := time.NewTimer(d)
defer timer.Stop()
select {
case <-ctx.Done():
return ctx.Err()
case <-timer.C:
return nil
}
}
// Retry logic with exponential backoff (+ jitter) for rate limits and transient failures
var resp *http.Response
maxRetries := 3
rng := rand.New(rand.NewSource(time.Now().UnixNano()))
for attempt := 0; attempt < maxRetries; attempt++ {
if ctx.Err() != nil {
return nil, fmt.Errorf("request cancelled: %w", ctx.Err())
}
resp, err = client.Do(req)
if err != nil {
// Network error retry
if attempt < maxRetries-1 {
backoff := time.Duration(1<<uint(attempt)) * time.Second
jitter := time.Duration(rng.Intn(1000)) * time.Millisecond
if err := sleepWithContext(backoff + jitter); err != nil {
return nil, fmt.Errorf("request cancelled: %w", err)
}
continue
}
return nil, fmt.Errorf("network error after %d attempts: %w", maxRetries, err)
}
// Success
if resp.StatusCode == http.StatusOK {
break
}
// Retry 429, 500, 502, 503 with exponential backoff + jitter
if (resp.StatusCode == http.StatusTooManyRequests ||
resp.StatusCode == http.StatusInternalServerError ||
resp.StatusCode == http.StatusBadGateway ||
resp.StatusCode == http.StatusServiceUnavailable) && attempt < maxRetries-1 {
if err := func() error {
defer func() { _ = resp.Body.Close() }()
backoff := time.Duration(1<<uint(attempt)) * time.Second
jitter := time.Duration(rng.Intn(1000)) * time.Millisecond
return sleepWithContext(backoff + jitter)
}(); err != nil {
return nil, fmt.Errorf("request cancelled: %w", err)
}
continue
}
break
}
if resp == nil {
return nil, fmt.Errorf("request failed: no response received")
}
if resp.StatusCode != http.StatusOK {
_ = resp.Body.Close()
statusText := http.StatusText(resp.StatusCode)
if statusText == "" {
statusText = resp.Status
}
fmt.Printf("[DriveClient] Drive API error: status=%d, msg=%s\n", resp.StatusCode, statusText)
// 只返回通用错误
return nil, fmt.Errorf("drive API error: status %d", resp.StatusCode)
}
defer func() { _ = resp.Body.Close() }()
// Parse response
var result struct {
StorageQuota struct {
Limit string `json:"limit"` // Can be string or number
Usage string `json:"usage"`
} `json:"storageQuota"`
}
if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
return nil, fmt.Errorf("failed to decode response: %w", err)
}
// Parse limit and usage (handle both string and number formats)
var limit, usage int64
if result.StorageQuota.Limit != "" {
if val, err := strconv.ParseInt(result.StorageQuota.Limit, 10, 64); err == nil {
limit = val
}
}
if result.StorageQuota.Usage != "" {
if val, err := strconv.ParseInt(result.StorageQuota.Usage, 10, 64); err == nil {
usage = val
}
}
return &DriveStorageInfo{
Limit: limit,
Usage: usage,
}, nil
}

18
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/geminicli/drive_client_test.go Normal file
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package geminicli
import "testing"
func TestDriveStorageInfo(t *testing.T) {
// 测试 DriveStorageInfo 结构体
info := &DriveStorageInfo{
Limit: 100 * 1024 * 1024 * 1024, // 100GB
Usage: 50 * 1024 * 1024 * 1024, // 50GB
}
if info.Limit != 100*1024*1024*1024 {
t.Errorf("Expected limit 100GB, got %d", info.Limit)
}
if info.Usage != 50*1024*1024*1024 {
t.Errorf("Expected usage 50GB, got %d", info.Usage)
}
}

25
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/geminicli/models.go Normal file
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package geminicli
// Model represents a selectable Gemini model for UI/testing purposes.
// Keep JSON fields consistent with existing frontend expectations.
type Model struct {
ID string `json:"id"`
Type string `json:"type"`
DisplayName string `json:"display_name"`
CreatedAt string `json:"created_at"`
}
// DefaultModels is the curated Gemini model list used by the admin UI "test account" flow.
var DefaultModels = []Model{
{ID: "gemini-2.0-flash", Type: "model", DisplayName: "Gemini 2.0 Flash", CreatedAt: ""},
{ID: "gemini-2.5-flash", Type: "model", DisplayName: "Gemini 2.5 Flash", CreatedAt: ""},
{ID: "gemini-2.5-flash-image", Type: "model", DisplayName: "Gemini 2.5 Flash Image", CreatedAt: ""},
{ID: "gemini-2.5-pro", Type: "model", DisplayName: "Gemini 2.5 Pro", CreatedAt: ""},
{ID: "gemini-3-flash-preview", Type: "model", DisplayName: "Gemini 3 Flash Preview", CreatedAt: ""},
{ID: "gemini-3-pro-preview", Type: "model", DisplayName: "Gemini 3 Pro Preview", CreatedAt: ""},
{ID: "gemini-3.1-pro-preview", Type: "model", DisplayName: "Gemini 3.1 Pro Preview", CreatedAt: ""},
{ID: "gemini-3.1-flash-image", Type: "model", DisplayName: "Gemini 3.1 Flash Image", CreatedAt: ""},
}
// DefaultTestModel is the default model to preselect in test flows.
const DefaultTestModel = "gemini-2.0-flash"

23
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/geminicli/models_test.go Normal file
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package geminicli
import "testing"
func TestDefaultModels_ContainsImageModels(t *testing.T) {
t.Parallel()
byID := make(map[string]Model, len(DefaultModels))
for _, model := range DefaultModels {
byID[model.ID] = model
}
required := []string{
"gemini-2.5-flash-image",
"gemini-3.1-flash-image",
}
for _, id := range required {
if _, ok := byID[id]; !ok {
t.Fatalf("expected curated Gemini model %q to exist", id)
}
}
}

270
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/geminicli/oauth.go Normal file
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package geminicli
import (
"crypto/rand"
"crypto/sha256"
"encoding/base64"
"encoding/hex"
"fmt"
"net/http"
"net/url"
"os"
"strings"
"sync"
"time"
infraerrors "github.com/Wei-Shaw/sub2api/internal/pkg/errors"
)
type OAuthConfig struct {
ClientID string
ClientSecret string
Scopes string
}
type OAuthSession struct {
State string `json:"state"`
CodeVerifier string `json:"code_verifier"`
ProxyURL string `json:"proxy_url,omitempty"`
RedirectURI string `json:"redirect_uri"`
ProjectID string `json:"project_id,omitempty"`
// TierID is a user-selected fallback tier.
// For oauth types that support auto detection (google_one/code_assist), the server will prefer
// the detected tier and fall back to TierID when detection fails.
TierID string `json:"tier_id,omitempty"`
OAuthType string `json:"oauth_type"` // "code_assist" 或 "ai_studio"
CreatedAt time.Time `json:"created_at"`
}
type SessionStore struct {
mu sync.RWMutex
sessions map[string]*OAuthSession
stopCh chan struct{}
}
func NewSessionStore() *SessionStore {
store := &SessionStore{
sessions: make(map[string]*OAuthSession),
stopCh: make(chan struct{}),
}
go store.cleanup()
return store
}
func (s *SessionStore) Set(sessionID string, session *OAuthSession) {
s.mu.Lock()
defer s.mu.Unlock()
s.sessions[sessionID] = session
}
func (s *SessionStore) Get(sessionID string) (*OAuthSession, bool) {
s.mu.RLock()
defer s.mu.RUnlock()
session, ok := s.sessions[sessionID]
if !ok {
return nil, false
}
if time.Since(session.CreatedAt) > SessionTTL {
return nil, false
}
return session, true
}
func (s *SessionStore) Delete(sessionID string) {
s.mu.Lock()
defer s.mu.Unlock()
delete(s.sessions, sessionID)
}
func (s *SessionStore) Stop() {
select {
case <-s.stopCh:
return
default:
close(s.stopCh)
}
}
func (s *SessionStore) cleanup() {
ticker := time.NewTicker(5 * time.Minute)
defer ticker.Stop()
for {
select {
case <-s.stopCh:
return
case <-ticker.C:
s.mu.Lock()
for id, session := range s.sessions {
if time.Since(session.CreatedAt) > SessionTTL {
delete(s.sessions, id)
}
}
s.mu.Unlock()
}
}
}
func GenerateRandomBytes(n int) ([]byte, error) {
b := make([]byte, n)
_, err := rand.Read(b)
if err != nil {
return nil, err
}
return b, nil
}
func GenerateState() (string, error) {
bytes, err := GenerateRandomBytes(32)
if err != nil {
return "", err
}
return base64URLEncode(bytes), nil
}
func GenerateSessionID() (string, error) {
bytes, err := GenerateRandomBytes(16)
if err != nil {
return "", err
}
return hex.EncodeToString(bytes), nil
}
// GenerateCodeVerifier returns an RFC 7636 compatible code verifier (43+ chars).
func GenerateCodeVerifier() (string, error) {
bytes, err := GenerateRandomBytes(32)
if err != nil {
return "", err
}
return base64URLEncode(bytes), nil
}
func GenerateCodeChallenge(verifier string) string {
hash := sha256.Sum256([]byte(verifier))
return base64URLEncode(hash[:])
}
func base64URLEncode(data []byte) string {
return strings.TrimRight(base64.URLEncoding.EncodeToString(data), "=")
}
// EffectiveOAuthConfig returns the effective OAuth configuration.
// oauthType: "code_assist" or "ai_studio" (defaults to "code_assist" if empty).
//
// If ClientID/ClientSecret is not provided, this falls back to the built-in Gemini CLI OAuth client.
//
// Note: The built-in Gemini CLI OAuth client is restricted and may reject some scopes (e.g.
// https://www.googleapis.com/auth/generative-language), which will surface as
// "restricted_client" / "Unregistered scope(s)" errors during browser authorization.
func EffectiveOAuthConfig(cfg OAuthConfig, oauthType string) (OAuthConfig, error) {
effective := OAuthConfig{
ClientID: strings.TrimSpace(cfg.ClientID),
ClientSecret: strings.TrimSpace(cfg.ClientSecret),
Scopes: strings.TrimSpace(cfg.Scopes),
}
// Normalize scopes: allow comma-separated input but send space-delimited scopes to Google.
if effective.Scopes != "" {
effective.Scopes = strings.Join(strings.Fields(strings.ReplaceAll(effective.Scopes, ",", " ")), " ")
}
// Fall back to built-in Gemini CLI OAuth client when not configured.
// SECURITY: This repo does not embed the built-in client secret; it must be provided via env.
if effective.ClientID == "" && effective.ClientSecret == "" {
secret := strings.TrimSpace(GeminiCLIOAuthClientSecret)
if secret == "" {
if v, ok := os.LookupEnv(GeminiCLIOAuthClientSecretEnv); ok {
secret = strings.TrimSpace(v)
}
}
if secret == "" {
return OAuthConfig{}, infraerrors.Newf(http.StatusBadRequest, "GEMINI_CLI_OAUTH_CLIENT_SECRET_MISSING", "built-in Gemini CLI OAuth client_secret is not configured; set %s or provide a custom OAuth client", GeminiCLIOAuthClientSecretEnv)
}
effective.ClientID = GeminiCLIOAuthClientID
effective.ClientSecret = secret
} else if effective.ClientID == "" || effective.ClientSecret == "" {
return OAuthConfig{}, infraerrors.New(http.StatusBadRequest, "GEMINI_OAUTH_CLIENT_NOT_CONFIGURED", "OAuth client not configured: please set both client_id and client_secret (or leave both empty to use the built-in Gemini CLI client)")
}
isBuiltinClient := effective.ClientID == GeminiCLIOAuthClientID
if effective.Scopes == "" {
// Use different default scopes based on OAuth type
switch oauthType {
case "ai_studio":
// Built-in client can't request some AI Studio scopes (notably generative-language).
if isBuiltinClient {
effective.Scopes = DefaultCodeAssistScopes
} else {
effective.Scopes = DefaultAIStudioScopes
}
case "google_one":
// Google One always uses built-in Gemini CLI client (same as code_assist)
// Built-in client can't request restricted scopes like generative-language.retriever or drive.readonly
effective.Scopes = DefaultCodeAssistScopes
default:
// Default to Code Assist scopes
effective.Scopes = DefaultCodeAssistScopes
}
} else if (oauthType == "ai_studio" || oauthType == "google_one") && isBuiltinClient {
// If user overrides scopes while still using the built-in client, strip restricted scopes.
parts := strings.Fields(effective.Scopes)
filtered := make([]string, 0, len(parts))
for _, s := range parts {
if hasRestrictedScope(s) {
continue
}
filtered = append(filtered, s)
}
if len(filtered) == 0 {
effective.Scopes = DefaultCodeAssistScopes
} else {
effective.Scopes = strings.Join(filtered, " ")
}
}
// Backward compatibility: normalize older AI Studio scope to the currently documented one.
if oauthType == "ai_studio" && effective.Scopes != "" {
parts := strings.Fields(effective.Scopes)
for i := range parts {
if parts[i] == "https://www.googleapis.com/auth/generative-language" {
parts[i] = "https://www.googleapis.com/auth/generative-language.retriever"
}
}
effective.Scopes = strings.Join(parts, " ")
}
return effective, nil
}
func hasRestrictedScope(scope string) bool {
return strings.HasPrefix(scope, "https://www.googleapis.com/auth/generative-language") ||
strings.HasPrefix(scope, "https://www.googleapis.com/auth/drive")
}
func BuildAuthorizationURL(cfg OAuthConfig, state, codeChallenge, redirectURI, projectID, oauthType string) (string, error) {
effectiveCfg, err := EffectiveOAuthConfig(cfg, oauthType)
if err != nil {
return "", err
}
redirectURI = strings.TrimSpace(redirectURI)
if redirectURI == "" {
return "", fmt.Errorf("redirect_uri is required")
}
params := url.Values{}
params.Set("response_type", "code")
params.Set("client_id", effectiveCfg.ClientID)
params.Set("redirect_uri", redirectURI)
params.Set("scope", effectiveCfg.Scopes)
params.Set("state", state)
params.Set("code_challenge", codeChallenge)
params.Set("code_challenge_method", "S256")
params.Set("access_type", "offline")
params.Set("prompt", "consent")
params.Set("include_granted_scopes", "true")
if strings.TrimSpace(projectID) != "" {
params.Set("project_id", strings.TrimSpace(projectID))
}
return fmt.Sprintf("%s?%s", AuthorizeURL, params.Encode()), nil
}

766
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/geminicli/oauth_test.go Normal file
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package geminicli
import (
"encoding/hex"
"strings"
"sync"
"testing"
"time"
)
// ---------------------------------------------------------------------------
// SessionStore 测试
// ---------------------------------------------------------------------------
func TestSessionStore_SetAndGet(t *testing.T) {
store := NewSessionStore()
defer store.Stop()
session := &OAuthSession{
State: "test-state",
OAuthType: "code_assist",
CreatedAt: time.Now(),
}
store.Set("sid-1", session)
got, ok := store.Get("sid-1")
if !ok {
t.Fatal("期望 Get 返回 ok=true，实际返回 false")
}
if got.State != "test-state" {
t.Errorf("期望 State=%q，实际=%q", "test-state", got.State)
}
}
func TestSessionStore_GetNotFound(t *testing.T) {
store := NewSessionStore()
defer store.Stop()
_, ok := store.Get("不存在的ID")
if ok {
t.Error("期望不存在的 sessionID 返回 ok=false")
}
}
func TestSessionStore_GetExpired(t *testing.T) {
store := NewSessionStore()
defer store.Stop()
// 创建一个已过期的 session（CreatedAt 设置为 SessionTTL+1 分钟之前）
session := &OAuthSession{
State: "expired-state",
OAuthType: "code_assist",
CreatedAt: time.Now().Add(-(SessionTTL + 1*time.Minute)),
}
store.Set("expired-sid", session)
_, ok := store.Get("expired-sid")
if ok {
t.Error("期望过期的 session 返回 ok=false")
}
}
func TestSessionStore_Delete(t *testing.T) {
store := NewSessionStore()
defer store.Stop()
session := &OAuthSession{
State: "to-delete",
OAuthType: "code_assist",
CreatedAt: time.Now(),
}
store.Set("del-sid", session)
// 先确认存在
if _, ok := store.Get("del-sid"); !ok {
t.Fatal("删除前 session 应该存在")
}
store.Delete("del-sid")
if _, ok := store.Get("del-sid"); ok {
t.Error("删除后 session 不应该存在")
}
}
func TestSessionStore_Stop_Idempotent(t *testing.T) {
store := NewSessionStore()
// 多次调用 Stop 不应 panic
store.Stop()
store.Stop()
store.Stop()
}
func TestSessionStore_ConcurrentAccess(t *testing.T) {
store := NewSessionStore()
defer store.Stop()
const goroutines = 50
var wg sync.WaitGroup
wg.Add(goroutines * 3)
// 并发写入
for i := 0; i < goroutines; i++ {
go func(idx int) {
defer wg.Done()
sid := "concurrent-" + string(rune('A'+idx%26))
store.Set(sid, &OAuthSession{
State: sid,
OAuthType: "code_assist",
CreatedAt: time.Now(),
})
}(i)
}
// 并发读取
for i := 0; i < goroutines; i++ {
go func(idx int) {
defer wg.Done()
sid := "concurrent-" + string(rune('A'+idx%26))
store.Get(sid) // 可能找到也可能没找到，关键是不 panic
}(i)
}
// 并发删除
for i := 0; i < goroutines; i++ {
go func(idx int) {
defer wg.Done()
sid := "concurrent-" + string(rune('A'+idx%26))
store.Delete(sid)
}(i)
}
wg.Wait()
}
// ---------------------------------------------------------------------------
// GenerateRandomBytes 测试
// ---------------------------------------------------------------------------
func TestGenerateRandomBytes(t *testing.T) {
tests := []int{0, 1, 16, 32, 64}
for _, n := range tests {
b, err := GenerateRandomBytes(n)
if err != nil {
t.Errorf("GenerateRandomBytes(%d) 出错: %v", n, err)
continue
}
if len(b) != n {
t.Errorf("GenerateRandomBytes(%d) 返回长度=%d，期望=%d", n, len(b), n)
}
}
}
func TestGenerateRandomBytes_Uniqueness(t *testing.T) {
// 两次调用应该返回不同的结果（极小概率相同，32字节足够）
a, _ := GenerateRandomBytes(32)
b, _ := GenerateRandomBytes(32)
if string(a) == string(b) {
t.Error("两次 GenerateRandomBytes(32) 返回了相同结果，随机性可能有问题")
}
}
// ---------------------------------------------------------------------------
// GenerateState 测试
// ---------------------------------------------------------------------------
func TestGenerateState(t *testing.T) {
state, err := GenerateState()
if err != nil {
t.Fatalf("GenerateState() 出错: %v", err)
}
if state == "" {
t.Error("GenerateState() 返回空字符串")
}
// base64url 编码不应包含 padding '='
if strings.Contains(state, "=") {
t.Errorf("GenerateState() 结果包含 '=' padding: %s", state)
}
// base64url 不应包含 '+' 或 '/'
if strings.ContainsAny(state, "+/") {
t.Errorf("GenerateState() 结果包含非 base64url 字符: %s", state)
}
}
// ---------------------------------------------------------------------------
// GenerateSessionID 测试
// ---------------------------------------------------------------------------
func TestGenerateSessionID(t *testing.T) {
sid, err := GenerateSessionID()
if err != nil {
t.Fatalf("GenerateSessionID() 出错: %v", err)
}
// 16 字节 -> 32 个 hex 字符
if len(sid) != 32 {
t.Errorf("GenerateSessionID() 长度=%d，期望=32", len(sid))
}
// 必须是合法的 hex 字符串
if _, err := hex.DecodeString(sid); err != nil {
t.Errorf("GenerateSessionID() 不是合法的 hex 字符串: %s, err=%v", sid, err)
}
}
func TestGenerateSessionID_Uniqueness(t *testing.T) {
a, _ := GenerateSessionID()
b, _ := GenerateSessionID()
if a == b {
t.Error("两次 GenerateSessionID() 返回了相同结果")
}
}
// ---------------------------------------------------------------------------
// GenerateCodeVerifier 测试
// ---------------------------------------------------------------------------
func TestGenerateCodeVerifier(t *testing.T) {
verifier, err := GenerateCodeVerifier()
if err != nil {
t.Fatalf("GenerateCodeVerifier() 出错: %v", err)
}
if verifier == "" {
t.Error("GenerateCodeVerifier() 返回空字符串")
}
// RFC 7636 要求 code_verifier 至少 43 个字符
if len(verifier) < 43 {
t.Errorf("GenerateCodeVerifier() 长度=%d，RFC 7636 要求至少 43 字符", len(verifier))
}
// base64url 编码不应包含 padding 和非 URL 安全字符
if strings.Contains(verifier, "=") {
t.Errorf("GenerateCodeVerifier() 包含 '=' padding: %s", verifier)
}
if strings.ContainsAny(verifier, "+/") {
t.Errorf("GenerateCodeVerifier() 包含非 base64url 字符: %s", verifier)
}
}
// ---------------------------------------------------------------------------
// GenerateCodeChallenge 测试
// ---------------------------------------------------------------------------
func TestGenerateCodeChallenge(t *testing.T) {
// 使用已知输入验证输出
// RFC 7636 附录 B 示例: verifier = "dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk"
// 预期 challenge = "E9Melhoa2OwvFrEMTJguCHaoeK1t8URWbuGJSstw-cM"
verifier := "dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk"
expected := "E9Melhoa2OwvFrEMTJguCHaoeK1t8URWbuGJSstw-cM"
challenge := GenerateCodeChallenge(verifier)
if challenge != expected {
t.Errorf("GenerateCodeChallenge(%q) = %q，期望 %q", verifier, challenge, expected)
}
}
func TestGenerateCodeChallenge_NoPadding(t *testing.T) {
challenge := GenerateCodeChallenge("test-verifier-string")
if strings.Contains(challenge, "=") {
t.Errorf("GenerateCodeChallenge() 结果包含 '=' padding: %s", challenge)
}
}
// ---------------------------------------------------------------------------
// base64URLEncode 测试
// ---------------------------------------------------------------------------
func TestBase64URLEncode(t *testing.T) {
tests := []struct {
name string
input []byte
}{
{"空字节", []byte{}},
{"单字节", []byte{0xff}},
{"多字节", []byte{0x01, 0x02, 0x03, 0x04, 0x05}},
{"全零", []byte{0x00, 0x00, 0x00}},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
result := base64URLEncode(tt.input)
// 不应包含 '=' padding
if strings.Contains(result, "=") {
t.Errorf("base64URLEncode(%v) 包含 '=' padding: %s", tt.input, result)
}
// 不应包含标准 base64 的 '+' 或 '/'
if strings.ContainsAny(result, "+/") {
t.Errorf("base64URLEncode(%v) 包含非 URL 安全字符: %s", tt.input, result)
}
})
}
}
// ---------------------------------------------------------------------------
// hasRestrictedScope 测试
// ---------------------------------------------------------------------------
func TestHasRestrictedScope(t *testing.T) {
tests := []struct {
scope string
expected bool
}{
// 受限 scope
{"https://www.googleapis.com/auth/generative-language", true},
{"https://www.googleapis.com/auth/generative-language.retriever", true},
{"https://www.googleapis.com/auth/generative-language.tuning", true},
{"https://www.googleapis.com/auth/drive", true},
{"https://www.googleapis.com/auth/drive.readonly", true},
{"https://www.googleapis.com/auth/drive.file", true},
// 非受限 scope
{"https://www.googleapis.com/auth/cloud-platform", false},
{"https://www.googleapis.com/auth/userinfo.email", false},
{"https://www.googleapis.com/auth/userinfo.profile", false},
// 边界情况
{"", false},
{"random-scope", false},
}
for _, tt := range tests {
t.Run(tt.scope, func(t *testing.T) {
got := hasRestrictedScope(tt.scope)
if got != tt.expected {
t.Errorf("hasRestrictedScope(%q) = %v，期望 %v", tt.scope, got, tt.expected)
}
})
}
}
// ---------------------------------------------------------------------------
// BuildAuthorizationURL 测试
// ---------------------------------------------------------------------------
func TestBuildAuthorizationURL(t *testing.T) {
t.Setenv(GeminiCLIOAuthClientSecretEnv, "test-secret")
authURL, err := BuildAuthorizationURL(
OAuthConfig{},
"test-state",
"test-challenge",
"https://example.com/callback",
"",
"code_assist",
)
if err != nil {
t.Fatalf("BuildAuthorizationURL() 出错: %v", err)
}
// 检查返回的 URL 包含期望的参数
checks := []string{
"response_type=code",
"client_id=" + GeminiCLIOAuthClientID,
"redirect_uri=",
"state=test-state",
"code_challenge=test-challenge",
"code_challenge_method=S256",
"access_type=offline",
"prompt=consent",
"include_granted_scopes=true",
}
for _, check := range checks {
if !strings.Contains(authURL, check) {
t.Errorf("BuildAuthorizationURL() URL 缺少参数 %q\nURL: %s", check, authURL)
}
}
// 不应包含 project_id（因为传的是空字符串）
if strings.Contains(authURL, "project_id=") {
t.Errorf("BuildAuthorizationURL() 空 projectID 时不应包含 project_id 参数")
}
// URL 应该以正确的授权端点开头
if !strings.HasPrefix(authURL, AuthorizeURL+"?") {
t.Errorf("BuildAuthorizationURL() URL 应以 %s? 开头，实际: %s", AuthorizeURL, authURL)
}
}
func TestBuildAuthorizationURL_EmptyRedirectURI(t *testing.T) {
t.Setenv(GeminiCLIOAuthClientSecretEnv, "test-secret")
_, err := BuildAuthorizationURL(
OAuthConfig{},
"test-state",
"test-challenge",
"", // 空 redirectURI
"",
"code_assist",
)
if err == nil {
t.Error("BuildAuthorizationURL() 空 redirectURI 应该报错")
}
if !strings.Contains(err.Error(), "redirect_uri") {
t.Errorf("错误消息应包含 'redirect_uri'，实际: %v", err)
}
}
func TestBuildAuthorizationURL_WithProjectID(t *testing.T) {
t.Setenv(GeminiCLIOAuthClientSecretEnv, "test-secret")
authURL, err := BuildAuthorizationURL(
OAuthConfig{},
"test-state",
"test-challenge",
"https://example.com/callback",
"my-project-123",
"code_assist",
)
if err != nil {
t.Fatalf("BuildAuthorizationURL() 出错: %v", err)
}
if !strings.Contains(authURL, "project_id=my-project-123") {
t.Errorf("BuildAuthorizationURL() 带 projectID 时应包含 project_id 参数\nURL: %s", authURL)
}
}
func TestBuildAuthorizationURL_UsesBuiltinSecretFallback(t *testing.T) {
t.Setenv(GeminiCLIOAuthClientSecretEnv, "")
authURL, err := BuildAuthorizationURL(
OAuthConfig{},
"test-state",
"test-challenge",
"https://example.com/callback",
"",
"code_assist",
)
if err != nil {
t.Fatalf("BuildAuthorizationURL() 不应报错: %v", err)
}
if !strings.Contains(authURL, "client_id="+GeminiCLIOAuthClientID) {
t.Errorf("应使用内置 Gemini CLI client_id，实际 URL: %s", authURL)
}
}
// ---------------------------------------------------------------------------
// EffectiveOAuthConfig 测试 - 原有测试
// ---------------------------------------------------------------------------
func TestEffectiveOAuthConfig_GoogleOne(t *testing.T) {
// 内置的 Gemini CLI client secret 不嵌入在此仓库中。
// 测试通过环境变量设置一个假的 secret 来模拟运维配置。
t.Setenv(GeminiCLIOAuthClientSecretEnv, "test-built-in-secret")
tests := []struct {
name string
input OAuthConfig
oauthType string
wantClientID string
wantScopes string
wantErr bool
}{
{
name: "Google One 使用内置客户端（空配置）",
input: OAuthConfig{},
oauthType: "google_one",
wantClientID: GeminiCLIOAuthClientID,
wantScopes: DefaultCodeAssistScopes,
wantErr: false,
},
{
name: "Google One 使用自定义客户端（传入自定义凭据时使用自定义）",
input: OAuthConfig{
ClientID: "custom-client-id",
ClientSecret: "custom-client-secret",
},
oauthType: "google_one",
wantClientID: "custom-client-id",
wantScopes: DefaultCodeAssistScopes,
wantErr: false,
},
{
name: "Google One 内置客户端 + 自定义 scopes（应过滤受限 scopes）",
input: OAuthConfig{
Scopes: "https://www.googleapis.com/auth/cloud-platform https://www.googleapis.com/auth/generative-language.retriever https://www.googleapis.com/auth/drive.readonly",
},
oauthType: "google_one",
wantClientID: GeminiCLIOAuthClientID,
wantScopes: "https://www.googleapis.com/auth/cloud-platform",
wantErr: false,
},
{
name: "Google One 内置客户端 + 仅受限 scopes（应回退到默认）",
input: OAuthConfig{
Scopes: "https://www.googleapis.com/auth/generative-language.retriever https://www.googleapis.com/auth/drive.readonly",
},
oauthType: "google_one",
wantClientID: GeminiCLIOAuthClientID,
wantScopes: DefaultCodeAssistScopes,
wantErr: false,
},
{
name: "Code Assist 使用内置客户端",
input: OAuthConfig{},
oauthType: "code_assist",
wantClientID: GeminiCLIOAuthClientID,
wantScopes: DefaultCodeAssistScopes,
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := EffectiveOAuthConfig(tt.input, tt.oauthType)
if (err != nil) != tt.wantErr {
t.Errorf("EffectiveOAuthConfig() error = %v, wantErr %v", err, tt.wantErr)
return
}
if err != nil {
return
}
if got.ClientID != tt.wantClientID {
t.Errorf("EffectiveOAuthConfig() ClientID = %v, want %v", got.ClientID, tt.wantClientID)
}
if got.Scopes != tt.wantScopes {
t.Errorf("EffectiveOAuthConfig() Scopes = %v, want %v", got.Scopes, tt.wantScopes)
}
})
}
}
func TestEffectiveOAuthConfig_ScopeFiltering(t *testing.T) {
t.Setenv(GeminiCLIOAuthClientSecretEnv, "test-built-in-secret")
// 测试 Google One + 内置客户端过滤受限 scopes
cfg, err := EffectiveOAuthConfig(OAuthConfig{
Scopes: "https://www.googleapis.com/auth/cloud-platform https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/generative-language.retriever https://www.googleapis.com/auth/drive.readonly https://www.googleapis.com/auth/userinfo.profile",
}, "google_one")
if err != nil {
t.Fatalf("EffectiveOAuthConfig() error = %v", err)
}
// 应仅包含 cloud-platform、userinfo.email 和 userinfo.profile
// 不应包含 generative-language 或 drive scopes
if strings.Contains(cfg.Scopes, "generative-language") {
t.Errorf("使用内置客户端时 Scopes 不应包含 generative-language，实际: %v", cfg.Scopes)
}
if strings.Contains(cfg.Scopes, "drive") {
t.Errorf("使用内置客户端时 Scopes 不应包含 drive，实际: %v", cfg.Scopes)
}
if !strings.Contains(cfg.Scopes, "cloud-platform") {
t.Errorf("Scopes 应包含 cloud-platform，实际: %v", cfg.Scopes)
}
if !strings.Contains(cfg.Scopes, "userinfo.email") {
t.Errorf("Scopes 应包含 userinfo.email，实际: %v", cfg.Scopes)
}
if !strings.Contains(cfg.Scopes, "userinfo.profile") {
t.Errorf("Scopes 应包含 userinfo.profile，实际: %v", cfg.Scopes)
}
}
// ---------------------------------------------------------------------------
// EffectiveOAuthConfig 测试 - 新增分支覆盖
// ---------------------------------------------------------------------------
func TestEffectiveOAuthConfig_OnlyClientID_NoSecret(t *testing.T) {
// 只提供 clientID 不提供 secret 应报错
_, err := EffectiveOAuthConfig(OAuthConfig{
ClientID: "some-client-id",
}, "code_assist")
if err == nil {
t.Error("只提供 ClientID 不提供 ClientSecret 应该报错")
}
if !strings.Contains(err.Error(), "client_id") || !strings.Contains(err.Error(), "client_secret") {
t.Errorf("错误消息应提及 client_id 和 client_secret，实际: %v", err)
}
}
func TestEffectiveOAuthConfig_OnlyClientSecret_NoID(t *testing.T) {
// 只提供 secret 不提供 clientID 应报错
_, err := EffectiveOAuthConfig(OAuthConfig{
ClientSecret: "some-client-secret",
}, "code_assist")
if err == nil {
t.Error("只提供 ClientSecret 不提供 ClientID 应该报错")
}
if !strings.Contains(err.Error(), "client_id") || !strings.Contains(err.Error(), "client_secret") {
t.Errorf("错误消息应提及 client_id 和 client_secret，实际: %v", err)
}
}
func TestEffectiveOAuthConfig_AIStudio_DefaultScopes_BuiltinClient(t *testing.T) {
t.Setenv(GeminiCLIOAuthClientSecretEnv, "test-built-in-secret")
// ai_studio 类型，使用内置客户端，scopes 为空 -> 应使用 DefaultCodeAssistScopes（因为内置客户端不能请求 generative-language scope）
cfg, err := EffectiveOAuthConfig(OAuthConfig{}, "ai_studio")
if err != nil {
t.Fatalf("EffectiveOAuthConfig() error = %v", err)
}
if cfg.Scopes != DefaultCodeAssistScopes {
t.Errorf("ai_studio + 内置客户端应使用 DefaultCodeAssistScopes，实际: %q", cfg.Scopes)
}
}
func TestEffectiveOAuthConfig_AIStudio_DefaultScopes_CustomClient(t *testing.T) {
// ai_studio 类型，使用自定义客户端，scopes 为空 -> 应使用 DefaultAIStudioScopes
cfg, err := EffectiveOAuthConfig(OAuthConfig{
ClientID: "custom-id",
ClientSecret: "custom-secret",
}, "ai_studio")
if err != nil {
t.Fatalf("EffectiveOAuthConfig() error = %v", err)
}
if cfg.Scopes != DefaultAIStudioScopes {
t.Errorf("ai_studio + 自定义客户端应使用 DefaultAIStudioScopes，实际: %q", cfg.Scopes)
}
}
func TestEffectiveOAuthConfig_AIStudio_ScopeNormalization(t *testing.T) {
// ai_studio 类型，旧的 generative-language scope 应被归一化为 generative-language.retriever
cfg, err := EffectiveOAuthConfig(OAuthConfig{
ClientID: "custom-id",
ClientSecret: "custom-secret",
Scopes: "https://www.googleapis.com/auth/generative-language https://www.googleapis.com/auth/cloud-platform",
}, "ai_studio")
if err != nil {
t.Fatalf("EffectiveOAuthConfig() error = %v", err)
}
if strings.Contains(cfg.Scopes, "auth/generative-language ") || strings.HasSuffix(cfg.Scopes, "auth/generative-language") {
// 确保不包含未归一化的旧 scope（仅 generative-language 而非 generative-language.retriever）
parts := strings.Fields(cfg.Scopes)
for _, p := range parts {
if p == "https://www.googleapis.com/auth/generative-language" {
t.Errorf("ai_studio 应将 generative-language 归一化为 generative-language.retriever，实际 scopes: %q", cfg.Scopes)
}
}
}
if !strings.Contains(cfg.Scopes, "generative-language.retriever") {
t.Errorf("ai_studio 归一化后应包含 generative-language.retriever，实际: %q", cfg.Scopes)
}
}
func TestEffectiveOAuthConfig_CommaSeparatedScopes(t *testing.T) {
t.Setenv(GeminiCLIOAuthClientSecretEnv, "test-built-in-secret")
// 逗号分隔的 scopes 应被归一化为空格分隔
cfg, err := EffectiveOAuthConfig(OAuthConfig{
ClientID: "custom-id",
ClientSecret: "custom-secret",
Scopes: "https://www.googleapis.com/auth/cloud-platform,https://www.googleapis.com/auth/userinfo.email",
}, "code_assist")
if err != nil {
t.Fatalf("EffectiveOAuthConfig() error = %v", err)
}
// 应该用空格分隔，而非逗号
if strings.Contains(cfg.Scopes, ",") {
t.Errorf("逗号分隔的 scopes 应被归一化为空格分隔，实际: %q", cfg.Scopes)
}
if !strings.Contains(cfg.Scopes, "cloud-platform") {
t.Errorf("归一化后应包含 cloud-platform，实际: %q", cfg.Scopes)
}
if !strings.Contains(cfg.Scopes, "userinfo.email") {
t.Errorf("归一化后应包含 userinfo.email，实际: %q", cfg.Scopes)
}
}
func TestEffectiveOAuthConfig_MixedCommaAndSpaceScopes(t *testing.T) {
// 混合逗号和空格分隔的 scopes
cfg, err := EffectiveOAuthConfig(OAuthConfig{
ClientID: "custom-id",
ClientSecret: "custom-secret",
Scopes: "https://www.googleapis.com/auth/cloud-platform, https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/userinfo.profile",
}, "code_assist")
if err != nil {
t.Fatalf("EffectiveOAuthConfig() error = %v", err)
}
parts := strings.Fields(cfg.Scopes)
if len(parts) != 3 {
t.Errorf("归一化后应有 3 个 scope，实际: %d，scopes: %q", len(parts), cfg.Scopes)
}
}
func TestEffectiveOAuthConfig_WhitespaceTriming(t *testing.T) {
// 输入中的前后空白应被清理
cfg, err := EffectiveOAuthConfig(OAuthConfig{
ClientID: " custom-id ",
ClientSecret: " custom-secret ",
Scopes: " https://www.googleapis.com/auth/cloud-platform ",
}, "code_assist")
if err != nil {
t.Fatalf("EffectiveOAuthConfig() error = %v", err)
}
if cfg.ClientID != "custom-id" {
t.Errorf("ClientID 应去除前后空白，实际: %q", cfg.ClientID)
}
if cfg.ClientSecret != "custom-secret" {
t.Errorf("ClientSecret 应去除前后空白，实际: %q", cfg.ClientSecret)
}
if cfg.Scopes != "https://www.googleapis.com/auth/cloud-platform" {
t.Errorf("Scopes 应去除前后空白，实际: %q", cfg.Scopes)
}
}
func TestEffectiveOAuthConfig_NoEnvSecret(t *testing.T) {
t.Setenv(GeminiCLIOAuthClientSecretEnv, "")
cfg, err := EffectiveOAuthConfig(OAuthConfig{}, "code_assist")
if err != nil {
t.Fatalf("不设置环境变量时应回退到内置 secret，实际报错: %v", err)
}
if strings.TrimSpace(cfg.ClientSecret) == "" {
t.Error("ClientSecret 不应为空")
}
if cfg.ClientID != GeminiCLIOAuthClientID {
t.Errorf("ClientID 应回退为内置客户端 ID，实际: %q", cfg.ClientID)
}
}
func TestEffectiveOAuthConfig_AIStudio_BuiltinClient_CustomScopes(t *testing.T) {
t.Setenv(GeminiCLIOAuthClientSecretEnv, "test-built-in-secret")
// ai_studio + 内置客户端 + 自定义 scopes -> 应过滤受限 scopes
cfg, err := EffectiveOAuthConfig(OAuthConfig{
Scopes: "https://www.googleapis.com/auth/cloud-platform https://www.googleapis.com/auth/generative-language.retriever",
}, "ai_studio")
if err != nil {
t.Fatalf("EffectiveOAuthConfig() error = %v", err)
}
// 内置客户端应过滤 generative-language.retriever
if strings.Contains(cfg.Scopes, "generative-language") {
t.Errorf("ai_studio + 内置客户端应过滤受限 scopes，实际: %q", cfg.Scopes)
}
if !strings.Contains(cfg.Scopes, "cloud-platform") {
t.Errorf("应保留 cloud-platform scope，实际: %q", cfg.Scopes)
}
}
func TestEffectiveOAuthConfig_UnknownOAuthType_DefaultScopes(t *testing.T) {
t.Setenv(GeminiCLIOAuthClientSecretEnv, "test-built-in-secret")
// 未知的 oauthType 应回退到默认的 code_assist scopes
cfg, err := EffectiveOAuthConfig(OAuthConfig{}, "unknown_type")
if err != nil {
t.Fatalf("EffectiveOAuthConfig() error = %v", err)
}
if cfg.Scopes != DefaultCodeAssistScopes {
t.Errorf("未知 oauthType 应使用 DefaultCodeAssistScopes，实际: %q", cfg.Scopes)
}
}
func TestEffectiveOAuthConfig_EmptyOAuthType_DefaultScopes(t *testing.T) {
t.Setenv(GeminiCLIOAuthClientSecretEnv, "test-built-in-secret")
// 空的 oauthType 应走 default 分支，使用 DefaultCodeAssistScopes
cfg, err := EffectiveOAuthConfig(OAuthConfig{}, "")
if err != nil {
t.Fatalf("EffectiveOAuthConfig() error = %v", err)
}
if cfg.Scopes != DefaultCodeAssistScopes {
t.Errorf("空 oauthType 应使用 DefaultCodeAssistScopes，实际: %q", cfg.Scopes)
}
}
func TestEffectiveOAuthConfig_CustomClient_NoScopeFiltering(t *testing.T) {
// 自定义客户端 + google_one + 包含受限 scopes -> 不应被过滤（因为不是内置客户端）
cfg, err := EffectiveOAuthConfig(OAuthConfig{
ClientID: "custom-id",
ClientSecret: "custom-secret",
Scopes: "https://www.googleapis.com/auth/generative-language.retriever https://www.googleapis.com/auth/drive.readonly",
}, "google_one")
if err != nil {
t.Fatalf("EffectiveOAuthConfig() error = %v", err)
}
// 自定义客户端不应过滤任何 scope
if !strings.Contains(cfg.Scopes, "generative-language.retriever") {
t.Errorf("自定义客户端不应过滤 generative-language.retriever，实际: %q", cfg.Scopes)
}
if !strings.Contains(cfg.Scopes, "drive.readonly") {
t.Errorf("自定义客户端不应过滤 drive.readonly，实际: %q", cfg.Scopes)
}
}

46
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/geminicli/sanitize.go Normal file
View File

@@ -0,0 +1,46 @@
package geminicli
import "strings"
const maxLogBodyLen = 2048
func SanitizeBodyForLogs(body string) string {
body = truncateBase64InMessage(body)
if len(body) > maxLogBodyLen {
body = body[:maxLogBodyLen] + "...[truncated]"
}
return body
}
func truncateBase64InMessage(message string) string {
const maxBase64Length = 50
result := message
offset := 0
for {
idx := strings.Index(result[offset:], ";base64,")
if idx == -1 {
break
}
actualIdx := offset + idx
start := actualIdx + len(";base64,")
end := start
for end < len(result) && isBase64Char(result[end]) {
end++
}
if end-start > maxBase64Length {
result = result[:start+maxBase64Length] + "...[truncated]" + result[end:]
offset = start + maxBase64Length + len("...[truncated]")
continue
}
offset = end
}
return result
}
func isBase64Char(c byte) bool {
return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') || c == '+' || c == '/' || c == '='
}

9
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/geminicli/token_types.go Normal file
View File

@@ -0,0 +1,9 @@
package geminicli
type TokenResponse struct {
AccessToken string `json:"access_token"`
RefreshToken string `json:"refresh_token,omitempty"`
TokenType string `json:"token_type"`
ExpiresIn int64 `json:"expires_in"`
Scope string `json:"scope,omitempty"`
}

109
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/googleapi/error.go Normal file
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@@ -0,0 +1,109 @@
// Package googleapi provides helpers for Google-style API responses.
package googleapi
import (
"encoding/json"
"fmt"
"strings"
)
// ErrorResponse represents a Google API error response
type ErrorResponse struct {
Error ErrorDetail `json:"error"`
}
// ErrorDetail contains the error details from Google API
type ErrorDetail struct {
Code int `json:"code"`
Message string `json:"message"`
Status string `json:"status"`
Details []json.RawMessage `json:"details,omitempty"`
}
// ErrorDetailInfo contains additional error information
type ErrorDetailInfo struct {
Type string `json:"@type"`
Reason string `json:"reason,omitempty"`
Domain string `json:"domain,omitempty"`
Metadata map[string]string `json:"metadata,omitempty"`
}
// ErrorHelp contains help links
type ErrorHelp struct {
Type string `json:"@type"`
Links []HelpLink `json:"links,omitempty"`
}
// HelpLink represents a help link
type HelpLink struct {
Description string `json:"description"`
URL string `json:"url"`
}
// ParseError parses a Google API error response and extracts key information
func ParseError(body string) (*ErrorResponse, error) {
var errResp ErrorResponse
if err := json.Unmarshal([]byte(body), &errResp); err != nil {
return nil, fmt.Errorf("failed to parse error response: %w", err)
}
return &errResp, nil
}
// ExtractActivationURL extracts the API activation URL from error details
func ExtractActivationURL(body string) string {
var errResp ErrorResponse
if err := json.Unmarshal([]byte(body), &errResp); err != nil {
return ""
}
// Check error details for activation URL
for _, detailRaw := range errResp.Error.Details {
// Parse as ErrorDetailInfo
var info ErrorDetailInfo
if err := json.Unmarshal(detailRaw, &info); err == nil {
if info.Metadata != nil {
if activationURL, ok := info.Metadata["activationUrl"]; ok && activationURL != "" {
return activationURL
}
}
}
// Parse as ErrorHelp
var help ErrorHelp
if err := json.Unmarshal(detailRaw, &help); err == nil {
for _, link := range help.Links {
if strings.Contains(link.Description, "activation") ||
strings.Contains(link.Description, "API activation") ||
strings.Contains(link.URL, "/apis/api/") {
return link.URL
}
}
}
}
return ""
}
// IsServiceDisabledError checks if the error is a SERVICE_DISABLED error
func IsServiceDisabledError(body string) bool {
var errResp ErrorResponse
if err := json.Unmarshal([]byte(body), &errResp); err != nil {
return false
}
// Check if it's a 403 PERMISSION_DENIED with SERVICE_DISABLED reason
if errResp.Error.Code != 403 || errResp.Error.Status != "PERMISSION_DENIED" {
return false
}
for _, detailRaw := range errResp.Error.Details {
var info ErrorDetailInfo
if err := json.Unmarshal(detailRaw, &info); err == nil {
if info.Reason == "SERVICE_DISABLED" {
return true
}
}
}
return false
}

143
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/googleapi/error_test.go Normal file
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package googleapi
import (
"testing"
)
func TestExtractActivationURL(t *testing.T) {
// Test case from the user's error message
errorBody := `{
"error": {
"code": 403,
"message": "Gemini for Google Cloud API has not been used in project project-6eca5881-ab73-4736-843 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/cloudaicompanion.googleapis.com/overview?project=project-6eca5881-ab73-4736-843 then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.",
"status": "PERMISSION_DENIED",
"details": [
{
"@type": "type.googleapis.com/google.rpc.ErrorInfo",
"reason": "SERVICE_DISABLED",
"domain": "googleapis.com",
"metadata": {
"service": "cloudaicompanion.googleapis.com",
"activationUrl": "https://console.developers.google.com/apis/api/cloudaicompanion.googleapis.com/overview?project=project-6eca5881-ab73-4736-843",
"consumer": "projects/project-6eca5881-ab73-4736-843",
"serviceTitle": "Gemini for Google Cloud API",
"containerInfo": "project-6eca5881-ab73-4736-843"
}
},
{
"@type": "type.googleapis.com/google.rpc.LocalizedMessage",
"locale": "en-US",
"message": "Gemini for Google Cloud API has not been used in project project-6eca5881-ab73-4736-843 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/cloudaicompanion.googleapis.com/overview?project=project-6eca5881-ab73-4736-843 then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry."
},
{
"@type": "type.googleapis.com/google.rpc.Help",
"links": [
{
"description": "Google developers console API activation",
"url": "https://console.developers.google.com/apis/api/cloudaicompanion.googleapis.com/overview?project=project-6eca5881-ab73-4736-843"
}
]
}
]
}
}`
activationURL := ExtractActivationURL(errorBody)
expectedURL := "https://console.developers.google.com/apis/api/cloudaicompanion.googleapis.com/overview?project=project-6eca5881-ab73-4736-843"
if activationURL != expectedURL {
t.Errorf("Expected activation URL %s, got %s", expectedURL, activationURL)
}
}
func TestIsServiceDisabledError(t *testing.T) {
tests := []struct {
name string
body string
expected bool
}{
{
name: "SERVICE_DISABLED error",
body: `{
"error": {
"code": 403,
"status": "PERMISSION_DENIED",
"details": [
{
"@type": "type.googleapis.com/google.rpc.ErrorInfo",
"reason": "SERVICE_DISABLED"
}
]
}
}`,
expected: true,
},
{
name: "Other 403 error",
body: `{
"error": {
"code": 403,
"status": "PERMISSION_DENIED",
"details": [
{
"@type": "type.googleapis.com/google.rpc.ErrorInfo",
"reason": "OTHER_REASON"
}
]
}
}`,
expected: false,
},
{
name: "404 error",
body: `{
"error": {
"code": 404,
"status": "NOT_FOUND"
}
}`,
expected: false,
},
{
name: "Invalid JSON",
body: `invalid json`,
expected: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
result := IsServiceDisabledError(tt.body)
if result != tt.expected {
t.Errorf("Expected %v, got %v", tt.expected, result)
}
})
}
}
func TestParseError(t *testing.T) {
errorBody := `{
"error": {
"code": 403,
"message": "API not enabled",
"status": "PERMISSION_DENIED"
}
}`
errResp, err := ParseError(errorBody)
if err != nil {
t.Fatalf("Failed to parse error: %v", err)
}
if errResp.Error.Code != 403 {
t.Errorf("Expected code 403, got %d", errResp.Error.Code)
}
if errResp.Error.Status != "PERMISSION_DENIED" {
t.Errorf("Expected status PERMISSION_DENIED, got %s", errResp.Error.Status)
}
if errResp.Error.Message != "API not enabled" {
t.Errorf("Expected message 'API not enabled', got %s", errResp.Error.Message)
}
}

25
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/googleapi/status.go Normal file
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// Package googleapi provides helpers for Google-style API responses.
package googleapi
import "net/http"
// HTTPStatusToGoogleStatus maps HTTP status codes to Google-style error status strings.
func HTTPStatusToGoogleStatus(status int) string {
switch status {
case http.StatusBadRequest:
return "INVALID_ARGUMENT"
case http.StatusUnauthorized:
return "UNAUTHENTICATED"
case http.StatusForbidden:
return "PERMISSION_DENIED"
case http.StatusNotFound:
return "NOT_FOUND"
case http.StatusTooManyRequests:
return "RESOURCE_EXHAUSTED"
default:
if status >= 500 {
return "INTERNAL"
}
return "UNKNOWN"
}
}

204
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/httpclient/pool.go Normal file
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// Package httpclient 提供共享 HTTP 客户端池
//
// 性能优化说明：
// 原实现在多个服务中重复创建 http.Client：
// 1. proxy_probe_service.go: 每次探测创建新客户端
// 2. pricing_service.go: 每次请求创建新客户端
// 3. turnstile_service.go: 每次验证创建新客户端
// 4. github_release_service.go: 每次请求创建新客户端
// 5. claude_usage_service.go: 每次请求创建新客户端
//
// 新实现使用统一的客户端池：
// 1. 相同配置复用同一 http.Client 实例
// 2. 复用 Transport 连接池，减少 TCP/TLS 握手开销
// 3. 支持 HTTP/HTTPS/SOCKS5/SOCKS5H 代理
// 4. 代理配置失败时直接返回错误，不会回退到直连（避免 IP 关联风险）
package httpclient
import (
"fmt"
"net/http"
"strings"
"sync"
"time"
"github.com/Wei-Shaw/sub2api/internal/pkg/proxyurl"
"github.com/Wei-Shaw/sub2api/internal/pkg/proxyutil"
"github.com/Wei-Shaw/sub2api/internal/util/urlvalidator"
)
// Transport 连接池默认配置
const (
defaultMaxIdleConns = 100 // 最大空闲连接数
defaultMaxIdleConnsPerHost = 10 // 每个主机最大空闲连接数
defaultIdleConnTimeout = 90 * time.Second // 空闲连接超时时间（建议小于上游 LB 超时）
validatedHostTTL = 30 * time.Second // DNS Rebinding 校验缓存 TTL
)
// Options 定义共享 HTTP 客户端的构建参数
type Options struct {
ProxyURL string // 代理 URL（支持 http/https/socks5/socks5h）
Timeout time.Duration // 请求总超时时间
ResponseHeaderTimeout time.Duration // 等待响应头超时时间
InsecureSkipVerify bool // 是否跳过 TLS 证书验证（已禁用，不允许设置为 true）
ValidateResolvedIP bool // 是否校验解析后的 IP（防止 DNS Rebinding）
AllowPrivateHosts bool // 允许私有地址解析（与 ValidateResolvedIP 一起使用）
// 可选的连接池参数（不设置则使用默认值）
MaxIdleConns int // 最大空闲连接总数（默认 100）
MaxIdleConnsPerHost int // 每主机最大空闲连接（默认 10）
MaxConnsPerHost int // 每主机最大连接数（默认 0 无限制）
}
// sharedClients 存储按配置参数缓存的 http.Client 实例
var sharedClients sync.Map
// 允许测试替换校验函数，生产默认指向真实实现。
var validateResolvedIP = urlvalidator.ValidateResolvedIP
// GetClient 返回共享的 HTTP 客户端实例
// 性能优化：相同配置复用同一客户端，避免重复创建 Transport
// 安全说明：代理配置失败时直接返回错误，不会回退到直连，避免 IP 关联风险
func GetClient(opts Options) (*http.Client, error) {
key := buildClientKey(opts)
if cached, ok := sharedClients.Load(key); ok {
if client, ok := cached.(*http.Client); ok {
return client, nil
}
}
client, err := buildClient(opts)
if err != nil {
return nil, err
}
actual, _ := sharedClients.LoadOrStore(key, client)
if c, ok := actual.(*http.Client); ok {
return c, nil
}
return client, nil
}
func buildClient(opts Options) (*http.Client, error) {
transport, err := buildTransport(opts)
if err != nil {
return nil, err
}
var rt http.RoundTripper = transport
if opts.ValidateResolvedIP && !opts.AllowPrivateHosts {
rt = newValidatedTransport(transport)
}
return &http.Client{
Transport: rt,
Timeout: opts.Timeout,
}, nil
}
func buildTransport(opts Options) (*http.Transport, error) {
// 使用自定义值或默认值
maxIdleConns := opts.MaxIdleConns
if maxIdleConns <= 0 {
maxIdleConns = defaultMaxIdleConns
}
maxIdleConnsPerHost := opts.MaxIdleConnsPerHost
if maxIdleConnsPerHost <= 0 {
maxIdleConnsPerHost = defaultMaxIdleConnsPerHost
}
transport := &http.Transport{
MaxIdleConns: maxIdleConns,
MaxIdleConnsPerHost: maxIdleConnsPerHost,
MaxConnsPerHost: opts.MaxConnsPerHost, // 0 表示无限制
IdleConnTimeout: defaultIdleConnTimeout,
ResponseHeaderTimeout: opts.ResponseHeaderTimeout,
}
if opts.InsecureSkipVerify {
// 安全要求：禁止跳过证书验证，避免中间人攻击。
return nil, fmt.Errorf("insecure_skip_verify is not allowed; install a trusted certificate instead")
}
_, parsed, err := proxyurl.Parse(opts.ProxyURL)
if err != nil {
return nil, err
}
if parsed == nil {
return transport, nil
}
if err := proxyutil.ConfigureTransportProxy(transport, parsed); err != nil {
return nil, err
}
return transport, nil
}
func buildClientKey(opts Options) string {
return fmt.Sprintf("%s|%s|%s|%t|%t|%t|%d|%d|%d",
strings.TrimSpace(opts.ProxyURL),
opts.Timeout.String(),
opts.ResponseHeaderTimeout.String(),
opts.InsecureSkipVerify,
opts.ValidateResolvedIP,
opts.AllowPrivateHosts,
opts.MaxIdleConns,
opts.MaxIdleConnsPerHost,
opts.MaxConnsPerHost,
)
}
type validatedTransport struct {
base http.RoundTripper
validatedHosts sync.Map // map[string]time.Time, value 为过期时间
now func() time.Time
}
func newValidatedTransport(base http.RoundTripper) *validatedTransport {
return &validatedTransport{
base: base,
now: time.Now,
}
}
func (t *validatedTransport) isValidatedHost(host string, now time.Time) bool {
if t == nil {
return false
}
raw, ok := t.validatedHosts.Load(host)
if !ok {
return false
}
expireAt, ok := raw.(time.Time)
if !ok {
t.validatedHosts.Delete(host)
return false
}
if now.Before(expireAt) {
return true
}
t.validatedHosts.Delete(host)
return false
}
func (t *validatedTransport) RoundTrip(req *http.Request) (*http.Response, error) {
if req != nil && req.URL != nil {
host := strings.ToLower(strings.TrimSpace(req.URL.Hostname()))
if host != "" {
now := time.Now()
if t != nil && t.now != nil {
now = t.now()
}
if !t.isValidatedHost(host, now) {
if err := validateResolvedIP(host); err != nil {
return nil, err
}
t.validatedHosts.Store(host, now.Add(validatedHostTTL))
}
}
}
if t == nil || t.base == nil {
return nil, fmt.Errorf("validated transport base is nil")
}
return t.base.RoundTrip(req)
}

115
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/httpclient/pool_test.go Normal file
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package httpclient
import (
"errors"
"io"
"net/http"
"strings"
"sync/atomic"
"testing"
"time"
"github.com/stretchr/testify/require"
)
type roundTripFunc func(*http.Request) (*http.Response, error)
func (f roundTripFunc) RoundTrip(req *http.Request) (*http.Response, error) {
return f(req)
}
func TestValidatedTransport_CacheHostValidation(t *testing.T) {
originalValidate := validateResolvedIP
defer func() { validateResolvedIP = originalValidate }()
var validateCalls int32
validateResolvedIP = func(host string) error {
atomic.AddInt32(&validateCalls, 1)
require.Equal(t, "api.openai.com", host)
return nil
}
var baseCalls int32
base := roundTripFunc(func(_ *http.Request) (*http.Response, error) {
atomic.AddInt32(&baseCalls, 1)
return &http.Response{
StatusCode: http.StatusOK,
Body: io.NopCloser(strings.NewReader(`{}`)),
Header: make(http.Header),
}, nil
})
now := time.Unix(1730000000, 0)
transport := newValidatedTransport(base)
transport.now = func() time.Time { return now }
req, err := http.NewRequest(http.MethodGet, "https://api.openai.com/v1/responses", nil)
require.NoError(t, err)
_, err = transport.RoundTrip(req)
require.NoError(t, err)
_, err = transport.RoundTrip(req)
require.NoError(t, err)
require.Equal(t, int32(1), atomic.LoadInt32(&validateCalls))
require.Equal(t, int32(2), atomic.LoadInt32(&baseCalls))
}
func TestValidatedTransport_ExpiredCacheTriggersRevalidation(t *testing.T) {
originalValidate := validateResolvedIP
defer func() { validateResolvedIP = originalValidate }()
var validateCalls int32
validateResolvedIP = func(_ string) error {
atomic.AddInt32(&validateCalls, 1)
return nil
}
base := roundTripFunc(func(_ *http.Request) (*http.Response, error) {
return &http.Response{
StatusCode: http.StatusOK,
Body: io.NopCloser(strings.NewReader(`{}`)),
Header: make(http.Header),
}, nil
})
now := time.Unix(1730001000, 0)
transport := newValidatedTransport(base)
transport.now = func() time.Time { return now }
req, err := http.NewRequest(http.MethodGet, "https://api.openai.com/v1/responses", nil)
require.NoError(t, err)
_, err = transport.RoundTrip(req)
require.NoError(t, err)
now = now.Add(validatedHostTTL + time.Second)
_, err = transport.RoundTrip(req)
require.NoError(t, err)
require.Equal(t, int32(2), atomic.LoadInt32(&validateCalls))
}
func TestValidatedTransport_ValidationErrorStopsRoundTrip(t *testing.T) {
originalValidate := validateResolvedIP
defer func() { validateResolvedIP = originalValidate }()
expectedErr := errors.New("dns rebinding rejected")
validateResolvedIP = func(_ string) error {
return expectedErr
}
var baseCalls int32
base := roundTripFunc(func(_ *http.Request) (*http.Response, error) {
atomic.AddInt32(&baseCalls, 1)
return &http.Response{StatusCode: http.StatusOK, Body: io.NopCloser(strings.NewReader(`{}`))}, nil
})
transport := newValidatedTransport(base)
req, err := http.NewRequest(http.MethodGet, "https://api.openai.com/v1/responses", nil)
require.NoError(t, err)
_, err = transport.RoundTrip(req)
require.ErrorIs(t, err, expectedErr)
require.Equal(t, int32(0), atomic.LoadInt32(&baseCalls))
}

37
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/httputil/body.go Normal file
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package httputil
import (
"bytes"
"io"
"net/http"
)
const (
requestBodyReadInitCap = 512
requestBodyReadMaxInitCap = 1 << 20
)
// ReadRequestBodyWithPrealloc reads request body with preallocated buffer based on content length.
func ReadRequestBodyWithPrealloc(req *http.Request) ([]byte, error) {
if req == nil || req.Body == nil {
return nil, nil
}
capHint := requestBodyReadInitCap
if req.ContentLength > 0 {
switch {
case req.ContentLength < int64(requestBodyReadInitCap):
capHint = requestBodyReadInitCap
case req.ContentLength > int64(requestBodyReadMaxInitCap):
capHint = requestBodyReadMaxInitCap
default:
capHint = int(req.ContentLength)
}
}
buf := bytes.NewBuffer(make([]byte, 0, capHint))
if _, err := io.Copy(buf, req.Body); err != nil {
return nil, err
}
return buf.Bytes(), nil
}

251
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/ip/ip.go Normal file
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// Package ip 提供客户端 IP 地址提取工具。
package ip
import (
"net"
"strings"
"github.com/gin-gonic/gin"
)
// GetClientIP 从 Gin Context 中提取客户端真实 IP 地址。
// 按以下优先级检查 Header：
// 1. CF-Connecting-IP (Cloudflare)
// 2. X-Real-IP (Nginx)
// 3. X-Forwarded-For (取第一个非私有 IP)
// 4. c.ClientIP() (Gin 内置方法)
func GetClientIP(c *gin.Context) string {
// 1. Cloudflare
if ip := c.GetHeader("CF-Connecting-IP"); ip != "" {
return normalizeIP(ip)
}
// 2. Nginx X-Real-IP
if ip := c.GetHeader("X-Real-IP"); ip != "" {
return normalizeIP(ip)
}
// 3. X-Forwarded-For (多个 IP 时取第一个公网 IP)
if xff := c.GetHeader("X-Forwarded-For"); xff != "" {
ips := strings.Split(xff, ",")
for _, ip := range ips {
ip = strings.TrimSpace(ip)
if ip != "" && !isPrivateIP(ip) {
return normalizeIP(ip)
}
}
// 如果都是私有 IP，返回第一个
if len(ips) > 0 {
return normalizeIP(strings.TrimSpace(ips[0]))
}
}
// 4. Gin 内置方法
return normalizeIP(c.ClientIP())
}
// GetTrustedClientIP 从 Gin 的可信代理解析链提取客户端 IP。
// 该方法依赖 gin.Engine.SetTrustedProxies 配置，不会优先直接信任原始转发头值。
// 适用于 ACL / 风控等安全敏感场景。
func GetTrustedClientIP(c *gin.Context) string {
if c == nil {
return ""
}
return normalizeIP(c.ClientIP())
}
// normalizeIP 规范化 IP 地址，去除端口号和空格。
func normalizeIP(ip string) string {
ip = strings.TrimSpace(ip)
// 移除端口号（如 "192.168.1.1:8080" -> "192.168.1.1"）
if host, _, err := net.SplitHostPort(ip); err == nil {
return host
}
return ip
}
// privateNets 预编译私有 IP CIDR 块，避免每次调用 isPrivateIP 时重复解析
var privateNets []*net.IPNet
// CompiledIPRules 表示预编译的 IP 匹配规则。
// PatternCount 记录原始规则数量，用于保留“规则存在但全无效”时的行为语义。
type CompiledIPRules struct {
CIDRs []*net.IPNet
IPs []net.IP
PatternCount int
}
func init() {
for _, cidr := range []string{
"10.0.0.0/8",
"172.16.0.0/12",
"192.168.0.0/16",
"127.0.0.0/8",
"::1/128",
"fc00::/7",
} {
_, block, err := net.ParseCIDR(cidr)
if err != nil {
panic("invalid CIDR: " + cidr)
}
privateNets = append(privateNets, block)
}
}
// CompileIPRules 将 IP/CIDR 字符串规则预编译为可复用结构。
// 非法规则会被忽略，但 PatternCount 会保留原始规则条数。
func CompileIPRules(patterns []string) *CompiledIPRules {
compiled := &CompiledIPRules{
CIDRs: make([]*net.IPNet, 0, len(patterns)),
IPs: make([]net.IP, 0, len(patterns)),
PatternCount: len(patterns),
}
for _, pattern := range patterns {
normalized := strings.TrimSpace(pattern)
if normalized == "" {
continue
}
if strings.Contains(normalized, "/") {
_, cidr, err := net.ParseCIDR(normalized)
if err != nil || cidr == nil {
continue
}
compiled.CIDRs = append(compiled.CIDRs, cidr)
continue
}
parsedIP := net.ParseIP(normalized)
if parsedIP == nil {
continue
}
compiled.IPs = append(compiled.IPs, parsedIP)
}
return compiled
}
func matchesCompiledRules(parsedIP net.IP, rules *CompiledIPRules) bool {
if parsedIP == nil || rules == nil {
return false
}
for _, cidr := range rules.CIDRs {
if cidr.Contains(parsedIP) {
return true
}
}
for _, ruleIP := range rules.IPs {
if parsedIP.Equal(ruleIP) {
return true
}
}
return false
}
// isPrivateIP 检查 IP 是否为私有地址。
func isPrivateIP(ipStr string) bool {
ip := net.ParseIP(ipStr)
if ip == nil {
return false
}
for _, block := range privateNets {
if block.Contains(ip) {
return true
}
}
return false
}
// MatchesPattern 检查 IP 是否匹配指定的模式（支持单个 IP 或 CIDR）。
// pattern 可以是：
// - 单个 IP: "192.168.1.100"
// - CIDR 范围: "192.168.1.0/24"
func MatchesPattern(clientIP, pattern string) bool {
ip := net.ParseIP(clientIP)
if ip == nil {
return false
}
// 尝试解析为 CIDR
if strings.Contains(pattern, "/") {
_, cidr, err := net.ParseCIDR(pattern)
if err != nil {
return false
}
return cidr.Contains(ip)
}
// 作为单个 IP 处理
patternIP := net.ParseIP(pattern)
if patternIP == nil {
return false
}
return ip.Equal(patternIP)
}
// MatchesAnyPattern 检查 IP 是否匹配任意一个模式。
func MatchesAnyPattern(clientIP string, patterns []string) bool {
for _, pattern := range patterns {
if MatchesPattern(clientIP, pattern) {
return true
}
}
return false
}
// CheckIPRestriction 检查 IP 是否被 API Key 的 IP 限制允许。
// 返回值：(是否允许, 拒绝原因)
// 逻辑：
// 1. 先检查黑名单，如果在黑名单中则直接拒绝
// 2. 如果白名单不为空，IP 必须在白名单中
// 3. 如果白名单为空，允许访问（除非被黑名单拒绝）
func CheckIPRestriction(clientIP string, whitelist, blacklist []string) (bool, string) {
return CheckIPRestrictionWithCompiledRules(
clientIP,
CompileIPRules(whitelist),
CompileIPRules(blacklist),
)
}
// CheckIPRestrictionWithCompiledRules 使用预编译规则检查 IP 是否允许访问。
func CheckIPRestrictionWithCompiledRules(clientIP string, whitelist, blacklist *CompiledIPRules) (bool, string) {
// 规范化 IP
clientIP = normalizeIP(clientIP)
if clientIP == "" {
return false, "access denied"
}
parsedIP := net.ParseIP(clientIP)
if parsedIP == nil {
return false, "access denied"
}
// 1. 检查黑名单
if blacklist != nil && blacklist.PatternCount > 0 && matchesCompiledRules(parsedIP, blacklist) {
return false, "access denied"
}
// 2. 检查白名单（如果设置了白名单，IP 必须在其中）
if whitelist != nil && whitelist.PatternCount > 0 && !matchesCompiledRules(parsedIP, whitelist) {
return false, "access denied"
}
return true, ""
}
// ValidateIPPattern 验证 IP 或 CIDR 格式是否有效。
func ValidateIPPattern(pattern string) bool {
if strings.Contains(pattern, "/") {
_, _, err := net.ParseCIDR(pattern)
return err == nil
}
return net.ParseIP(pattern) != nil
}
// ValidateIPPatterns 验证多个 IP 或 CIDR 格式。
// 返回无效的模式列表。
func ValidateIPPatterns(patterns []string) []string {
var invalid []string
for _, p := range patterns {
if !ValidateIPPattern(p) {
invalid = append(invalid, p)
}
}
return invalid
}

96
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/ip/ip_test.go Normal file
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//go:build unit
package ip
import (
"net/http/httptest"
"testing"
"github.com/gin-gonic/gin"
"github.com/stretchr/testify/require"
)
func TestIsPrivateIP(t *testing.T) {
tests := []struct {
name string
ip string
expected bool
}{
// 私有 IPv4
{"10.x 私有地址", "10.0.0.1", true},
{"10.x 私有地址段末", "10.255.255.255", true},
{"172.16.x 私有地址", "172.16.0.1", true},
{"172.31.x 私有地址", "172.31.255.255", true},
{"192.168.x 私有地址", "192.168.1.1", true},
{"127.0.0.1 本地回环", "127.0.0.1", true},
{"127.x 回环段", "127.255.255.255", true},
// 公网 IPv4
{"8.8.8.8 公网 DNS", "8.8.8.8", false},
{"1.1.1.1 公网", "1.1.1.1", false},
{"172.15.255.255 非私有", "172.15.255.255", false},
{"172.32.0.0 非私有", "172.32.0.0", false},
{"11.0.0.1 公网", "11.0.0.1", false},
// IPv6
{"::1 IPv6 回环", "::1", true},
{"fc00:: IPv6 私有", "fc00::1", true},
{"fd00:: IPv6 私有", "fd00::1", true},
{"2001:db8::1 IPv6 公网", "2001:db8::1", false},
// 无效输入
{"空字符串", "", false},
{"非法字符串", "not-an-ip", false},
{"不完整 IP", "192.168", false},
}
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
got := isPrivateIP(tc.ip)
require.Equal(t, tc.expected, got, "isPrivateIP(%q)", tc.ip)
})
}
}
func TestGetTrustedClientIPUsesGinClientIP(t *testing.T) {
gin.SetMode(gin.TestMode)
r := gin.New()
require.NoError(t, r.SetTrustedProxies(nil))
r.GET("/t", func(c *gin.Context) {
c.String(200, GetTrustedClientIP(c))
})
w := httptest.NewRecorder()
req := httptest.NewRequest("GET", "/t", nil)
req.RemoteAddr = "9.9.9.9:12345"
req.Header.Set("X-Forwarded-For", "1.2.3.4")
req.Header.Set("X-Real-IP", "1.2.3.4")
req.Header.Set("CF-Connecting-IP", "1.2.3.4")
r.ServeHTTP(w, req)
require.Equal(t, 200, w.Code)
require.Equal(t, "9.9.9.9", w.Body.String())
}
func TestCheckIPRestrictionWithCompiledRules(t *testing.T) {
whitelist := CompileIPRules([]string{"10.0.0.0/8", "192.168.1.2"})
blacklist := CompileIPRules([]string{"10.1.1.1"})
allowed, reason := CheckIPRestrictionWithCompiledRules("10.2.3.4", whitelist, blacklist)
require.True(t, allowed)
require.Equal(t, "", reason)
allowed, reason = CheckIPRestrictionWithCompiledRules("10.1.1.1", whitelist, blacklist)
require.False(t, allowed)
require.Equal(t, "access denied", reason)
}
func TestCheckIPRestrictionWithCompiledRules_InvalidWhitelistStillDenies(t *testing.T) {
// 与旧实现保持一致：白名单有配置但全无效时，最终应拒绝访问。
invalidWhitelist := CompileIPRules([]string{"not-a-valid-pattern"})
allowed, reason := CheckIPRestrictionWithCompiledRules("8.8.8.8", invalidWhitelist, nil)
require.False(t, allowed)
require.Equal(t, "access denied", reason)
}

31
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/logger/config_adapter.go Normal file
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package logger
import "github.com/Wei-Shaw/sub2api/internal/config"
func OptionsFromConfig(cfg config.LogConfig) InitOptions {
return InitOptions{
Level: cfg.Level,
Format: cfg.Format,
ServiceName: cfg.ServiceName,
Environment: cfg.Environment,
Caller: cfg.Caller,
StacktraceLevel: cfg.StacktraceLevel,
Output: OutputOptions{
ToStdout: cfg.Output.ToStdout,
ToFile: cfg.Output.ToFile,
FilePath: cfg.Output.FilePath,
},
Rotation: RotationOptions{
MaxSizeMB: cfg.Rotation.MaxSizeMB,
MaxBackups: cfg.Rotation.MaxBackups,
MaxAgeDays: cfg.Rotation.MaxAgeDays,
Compress: cfg.Rotation.Compress,
LocalTime: cfg.Rotation.LocalTime,
},
Sampling: SamplingOptions{
Enabled: cfg.Sampling.Enabled,
Initial: cfg.Sampling.Initial,
Thereafter: cfg.Sampling.Thereafter,
},
}
}

530
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/logger/logger.go Normal file
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package logger
import (
"context"
"fmt"
"io"
"log"
"log/slog"
"os"
"path/filepath"
"strings"
"sync"
"sync/atomic"
"time"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"gopkg.in/natefinch/lumberjack.v2"
)
type Level = zapcore.Level
const (
LevelDebug = zapcore.DebugLevel
LevelInfo = zapcore.InfoLevel
LevelWarn = zapcore.WarnLevel
LevelError = zapcore.ErrorLevel
LevelFatal = zapcore.FatalLevel
)
type Sink interface {
WriteLogEvent(event *LogEvent)
}
type LogEvent struct {
Time time.Time
Level string
Component string
Message string
LoggerName string
Fields map[string]any
}
var (
mu sync.RWMutex
global atomic.Pointer[zap.Logger]
sugar atomic.Pointer[zap.SugaredLogger]
atomicLevel zap.AtomicLevel
initOptions InitOptions
currentSink atomic.Value // sinkState
stdLogUndo func()
bootstrapOnce sync.Once
)
type sinkState struct {
sink Sink
}
func InitBootstrap() {
bootstrapOnce.Do(func() {
if err := Init(bootstrapOptions()); err != nil {
_, _ = fmt.Fprintf(os.Stderr, "logger bootstrap init failed: %v\n", err)
}
})
}
func Init(options InitOptions) error {
mu.Lock()
defer mu.Unlock()
return initLocked(options)
}
func initLocked(options InitOptions) error {
normalized := options.normalized()
zl, al, err := buildLogger(normalized)
if err != nil {
return err
}
prev := global.Load()
global.Store(zl)
sugar.Store(zl.Sugar())
atomicLevel = al
initOptions = normalized
bridgeSlogLocked()
bridgeStdLogLocked()
if prev != nil {
_ = prev.Sync()
}
return nil
}
func Reconfigure(mutator func(*InitOptions) error) error {
mu.Lock()
defer mu.Unlock()
next := initOptions
if mutator != nil {
if err := mutator(&next); err != nil {
return err
}
}
return initLocked(next)
}
func SetLevel(level string) error {
lv, ok := parseLevel(level)
if !ok {
return fmt.Errorf("invalid log level: %s", level)
}
mu.Lock()
defer mu.Unlock()
atomicLevel.SetLevel(lv)
initOptions.Level = strings.ToLower(strings.TrimSpace(level))
return nil
}
func CurrentLevel() string {
mu.RLock()
defer mu.RUnlock()
if global.Load() == nil {
return "info"
}
return atomicLevel.Level().String()
}
func SetSink(sink Sink) {
currentSink.Store(sinkState{sink: sink})
}
func loadSink() Sink {
v := currentSink.Load()
if v == nil {
return nil
}
state, ok := v.(sinkState)
if !ok {
return nil
}
return state.sink
}
// WriteSinkEvent 直接写入日志 sink，不经过全局日志级别门控。
// 用于需要“可观测性入库”与“业务输出级别”解耦的场景（例如 ops 系统日志索引）。
func WriteSinkEvent(level, component, message string, fields map[string]any) {
sink := loadSink()
if sink == nil {
return
}
level = strings.ToLower(strings.TrimSpace(level))
if level == "" {
level = "info"
}
component = strings.TrimSpace(component)
message = strings.TrimSpace(message)
if message == "" {
return
}
eventFields := make(map[string]any, len(fields)+1)
for k, v := range fields {
eventFields[k] = v
}
if component != "" {
if _, ok := eventFields["component"]; !ok {
eventFields["component"] = component
}
}
sink.WriteLogEvent(&LogEvent{
Time: time.Now(),
Level: level,
Component: component,
Message: message,
LoggerName: component,
Fields: eventFields,
})
}
func L() *zap.Logger {
if l := global.Load(); l != nil {
return l
}
return zap.NewNop()
}
func S() *zap.SugaredLogger {
if s := sugar.Load(); s != nil {
return s
}
return zap.NewNop().Sugar()
}
func With(fields ...zap.Field) *zap.Logger {
return L().With(fields...)
}
func Sync() {
l := global.Load()
if l != nil {
_ = l.Sync()
}
}
func bridgeStdLogLocked() {
if stdLogUndo != nil {
stdLogUndo()
stdLogUndo = nil
}
prevFlags := log.Flags()
prevPrefix := log.Prefix()
prevWriter := log.Writer()
log.SetFlags(0)
log.SetPrefix("")
base := global.Load()
if base == nil {
base = zap.NewNop()
}
log.SetOutput(newStdLogBridge(base.Named("stdlog")))
stdLogUndo = func() {
log.SetOutput(prevWriter)
log.SetFlags(prevFlags)
log.SetPrefix(prevPrefix)
}
}
func bridgeSlogLocked() {
base := global.Load()
if base == nil {
base = zap.NewNop()
}
slog.SetDefault(slog.New(newSlogZapHandler(base.Named("slog"))))
}
func buildLogger(options InitOptions) (*zap.Logger, zap.AtomicLevel, error) {
level, _ := parseLevel(options.Level)
atomic := zap.NewAtomicLevelAt(level)
encoderCfg := zapcore.EncoderConfig{
TimeKey: "time",
LevelKey: "level",
NameKey: "logger",
CallerKey: "caller",
MessageKey: "msg",
StacktraceKey: "stacktrace",
LineEnding: zapcore.DefaultLineEnding,
EncodeLevel: zapcore.CapitalLevelEncoder,
EncodeTime: zapcore.ISO8601TimeEncoder,
EncodeDuration: zapcore.MillisDurationEncoder,
EncodeCaller: zapcore.ShortCallerEncoder,
}
var enc zapcore.Encoder
if options.Format == "console" {
enc = zapcore.NewConsoleEncoder(encoderCfg)
} else {
enc = zapcore.NewJSONEncoder(encoderCfg)
}
sinkCore := newSinkCore()
cores := make([]zapcore.Core, 0, 3)
if options.Output.ToStdout {
infoPriority := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
return lvl >= atomic.Level() && lvl < zapcore.WarnLevel
})
errPriority := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
return lvl >= atomic.Level() && lvl >= zapcore.WarnLevel
})
cores = append(cores, zapcore.NewCore(enc, zapcore.Lock(os.Stdout), infoPriority))
cores = append(cores, zapcore.NewCore(enc, zapcore.Lock(os.Stderr), errPriority))
}
if options.Output.ToFile {
fileCore, filePath, fileErr := buildFileCore(enc, atomic, options)
if fileErr != nil {
_, _ = fmt.Fprintf(os.Stderr, "time=%s level=WARN msg=\"日志文件输出初始化失败，降级为仅标准输出\" path=%s err=%v\n",
time.Now().Format(time.RFC3339Nano),
filePath,
fileErr,
)
} else {
cores = append(cores, fileCore)
}
}
if len(cores) == 0 {
cores = append(cores, zapcore.NewCore(enc, zapcore.Lock(os.Stdout), atomic))
}
core := zapcore.NewTee(cores...)
if options.Sampling.Enabled {
core = zapcore.NewSamplerWithOptions(core, samplingTick(), options.Sampling.Initial, options.Sampling.Thereafter)
}
core = sinkCore.Wrap(core)
stacktraceLevel, _ := parseStacktraceLevel(options.StacktraceLevel)
zapOpts := make([]zap.Option, 0, 5)
if options.Caller {
zapOpts = append(zapOpts, zap.AddCaller())
}
if stacktraceLevel <= zapcore.FatalLevel {
zapOpts = append(zapOpts, zap.AddStacktrace(stacktraceLevel))
}
logger := zap.New(core, zapOpts...).With(
zap.String("service", options.ServiceName),
zap.String("env", options.Environment),
)
return logger, atomic, nil
}
func buildFileCore(enc zapcore.Encoder, atomic zap.AtomicLevel, options InitOptions) (zapcore.Core, string, error) {
filePath := options.Output.FilePath
if strings.TrimSpace(filePath) == "" {
filePath = resolveLogFilePath("")
}
dir := filepath.Dir(filePath)
if err := os.MkdirAll(dir, 0o755); err != nil {
return nil, filePath, err
}
lj := &lumberjack.Logger{
Filename: filePath,
MaxSize: options.Rotation.MaxSizeMB,
MaxBackups: options.Rotation.MaxBackups,
MaxAge: options.Rotation.MaxAgeDays,
Compress: options.Rotation.Compress,
LocalTime: options.Rotation.LocalTime,
}
return zapcore.NewCore(enc, zapcore.AddSync(lj), atomic), filePath, nil
}
type sinkCore struct {
core zapcore.Core
fields []zapcore.Field
}
func newSinkCore() *sinkCore {
return &sinkCore{}
}
func (s *sinkCore) Wrap(core zapcore.Core) zapcore.Core {
cp := *s
cp.core = core
return &cp
}
func (s *sinkCore) Enabled(level zapcore.Level) bool {
return s.core.Enabled(level)
}
func (s *sinkCore) With(fields []zapcore.Field) zapcore.Core {
nextFields := append([]zapcore.Field{}, s.fields...)
nextFields = append(nextFields, fields...)
return &sinkCore{
core: s.core.With(fields),
fields: nextFields,
}
}
func (s *sinkCore) Check(entry zapcore.Entry, ce *zapcore.CheckedEntry) *zapcore.CheckedEntry {
// Delegate to inner core (tee) so each sub-core's level enabler is respected.
// Then add ourselves for sink forwarding only.
ce = s.core.Check(entry, ce)
if ce != nil {
ce = ce.AddCore(entry, s)
}
return ce
}
func (s *sinkCore) Write(entry zapcore.Entry, fields []zapcore.Field) error {
// Only handle sink forwarding — the inner cores write via their own
// Write methods (added to CheckedEntry by s.core.Check above).
sink := loadSink()
if sink == nil {
return nil
}
enc := zapcore.NewMapObjectEncoder()
for _, f := range s.fields {
f.AddTo(enc)
}
for _, f := range fields {
f.AddTo(enc)
}
event := &LogEvent{
Time: entry.Time,
Level: strings.ToLower(entry.Level.String()),
Component: entry.LoggerName,
Message: entry.Message,
LoggerName: entry.LoggerName,
Fields: enc.Fields,
}
sink.WriteLogEvent(event)
return nil
}
func (s *sinkCore) Sync() error {
return s.core.Sync()
}
type stdLogBridge struct {
logger *zap.Logger
}
func newStdLogBridge(l *zap.Logger) io.Writer {
if l == nil {
l = zap.NewNop()
}
return &stdLogBridge{logger: l}
}
func (b *stdLogBridge) Write(p []byte) (int, error) {
msg := normalizeStdLogMessage(string(p))
if msg == "" {
return len(p), nil
}
level := inferStdLogLevel(msg)
entry := b.logger.WithOptions(zap.AddCallerSkip(4))
switch level {
case LevelDebug:
entry.Debug(msg, zap.Bool("legacy_stdlog", true))
case LevelWarn:
entry.Warn(msg, zap.Bool("legacy_stdlog", true))
case LevelError, LevelFatal:
entry.Error(msg, zap.Bool("legacy_stdlog", true))
default:
entry.Info(msg, zap.Bool("legacy_stdlog", true))
}
return len(p), nil
}
func normalizeStdLogMessage(raw string) string {
msg := strings.TrimSpace(strings.ReplaceAll(raw, "\n", " "))
if msg == "" {
return ""
}
return strings.Join(strings.Fields(msg), " ")
}
func inferStdLogLevel(msg string) Level {
lower := strings.ToLower(strings.TrimSpace(msg))
if lower == "" {
return LevelInfo
}
if strings.HasPrefix(lower, "[debug]") || strings.HasPrefix(lower, "debug:") {
return LevelDebug
}
if strings.HasPrefix(lower, "[warn]") || strings.HasPrefix(lower, "[warning]") || strings.HasPrefix(lower, "warn:") || strings.HasPrefix(lower, "warning:") {
return LevelWarn
}
if strings.HasPrefix(lower, "[error]") || strings.HasPrefix(lower, "error:") || strings.HasPrefix(lower, "fatal:") || strings.HasPrefix(lower, "panic:") {
return LevelError
}
if strings.Contains(lower, " failed") || strings.Contains(lower, "error") || strings.Contains(lower, "panic") || strings.Contains(lower, "fatal") {
return LevelError
}
if strings.Contains(lower, "warning") || strings.Contains(lower, "warn") || strings.Contains(lower, " queue full") || strings.Contains(lower, "fallback") {
return LevelWarn
}
return LevelInfo
}
// LegacyPrintf 用于平滑迁移历史的 printf 风格日志到结构化 logger。
func LegacyPrintf(component, format string, args ...any) {
msg := normalizeStdLogMessage(fmt.Sprintf(format, args...))
if msg == "" {
return
}
initialized := global.Load() != nil
if !initialized {
// 在日志系统未初始化前，回退到标准库 log，避免测试/工具链丢日志。
log.Print(msg)
return
}
l := L()
if component != "" {
l = l.With(zap.String("component", component))
}
l = l.WithOptions(zap.AddCallerSkip(1))
switch inferStdLogLevel(msg) {
case LevelDebug:
l.Debug(msg, zap.Bool("legacy_printf", true))
case LevelWarn:
l.Warn(msg, zap.Bool("legacy_printf", true))
case LevelError, LevelFatal:
l.Error(msg, zap.Bool("legacy_printf", true))
default:
l.Info(msg, zap.Bool("legacy_printf", true))
}
}
type contextKey string
const loggerContextKey contextKey = "ctx_logger"
func IntoContext(ctx context.Context, l *zap.Logger) context.Context {
if ctx == nil {
ctx = context.Background()
}
if l == nil {
l = L()
}
return context.WithValue(ctx, loggerContextKey, l)
}
func FromContext(ctx context.Context) *zap.Logger {
if ctx == nil {
return L()
}
if l, ok := ctx.Value(loggerContextKey).(*zap.Logger); ok && l != nil {
return l
}
return L()
}

192
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/logger/logger_test.go Normal file
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package logger
import (
"encoding/json"
"io"
"os"
"path/filepath"
"strings"
"testing"
)
func TestInit_DualOutput(t *testing.T) {
tmpDir := t.TempDir()
logPath := filepath.Join(tmpDir, "logs", "sub2api.log")
origStdout := os.Stdout
origStderr := os.Stderr
stdoutR, stdoutW, err := os.Pipe()
if err != nil {
t.Fatalf("create stdout pipe: %v", err)
}
stderrR, stderrW, err := os.Pipe()
if err != nil {
t.Fatalf("create stderr pipe: %v", err)
}
os.Stdout = stdoutW
os.Stderr = stderrW
t.Cleanup(func() {
os.Stdout = origStdout
os.Stderr = origStderr
_ = stdoutR.Close()
_ = stderrR.Close()
_ = stdoutW.Close()
_ = stderrW.Close()
})
err = Init(InitOptions{
Level: "debug",
Format: "json",
ServiceName: "sub2api",
Environment: "test",
Output: OutputOptions{
ToStdout: true,
ToFile: true,
FilePath: logPath,
},
Rotation: RotationOptions{
MaxSizeMB: 10,
MaxBackups: 2,
MaxAgeDays: 1,
},
Sampling: SamplingOptions{Enabled: false},
})
if err != nil {
t.Fatalf("Init() error: %v", err)
}
L().Info("dual-output-info")
L().Warn("dual-output-warn")
Sync()
_ = stdoutW.Close()
_ = stderrW.Close()
stdoutBytes, _ := io.ReadAll(stdoutR)
stderrBytes, _ := io.ReadAll(stderrR)
stdoutText := string(stdoutBytes)
stderrText := string(stderrBytes)
if !strings.Contains(stdoutText, "dual-output-info") {
t.Fatalf("stdout missing info log: %s", stdoutText)
}
if !strings.Contains(stderrText, "dual-output-warn") {
t.Fatalf("stderr missing warn log: %s", stderrText)
}
fileBytes, err := os.ReadFile(logPath)
if err != nil {
t.Fatalf("read log file: %v", err)
}
fileText := string(fileBytes)
if !strings.Contains(fileText, "dual-output-info") || !strings.Contains(fileText, "dual-output-warn") {
t.Fatalf("file missing logs: %s", fileText)
}
}
func TestInit_FileOutputFailureDowngrade(t *testing.T) {
origStdout := os.Stdout
origStderr := os.Stderr
_, stdoutW, err := os.Pipe()
if err != nil {
t.Fatalf("create stdout pipe: %v", err)
}
stderrR, stderrW, err := os.Pipe()
if err != nil {
t.Fatalf("create stderr pipe: %v", err)
}
os.Stdout = stdoutW
os.Stderr = stderrW
t.Cleanup(func() {
os.Stdout = origStdout
os.Stderr = origStderr
_ = stdoutW.Close()
_ = stderrR.Close()
_ = stderrW.Close()
})
err = Init(InitOptions{
Level: "info",
Format: "json",
Output: OutputOptions{
ToStdout: true,
ToFile: true,
FilePath: filepath.Join(os.DevNull, "logs", "sub2api.log"),
},
Rotation: RotationOptions{
MaxSizeMB: 10,
MaxBackups: 1,
MaxAgeDays: 1,
},
})
if err != nil {
t.Fatalf("Init() should downgrade instead of failing, got: %v", err)
}
_ = stderrW.Close()
stderrBytes, _ := io.ReadAll(stderrR)
if !strings.Contains(string(stderrBytes), "日志文件输出初始化失败") {
t.Fatalf("stderr should contain fallback warning, got: %s", string(stderrBytes))
}
}
func TestInit_CallerShouldPointToCallsite(t *testing.T) {
origStdout := os.Stdout
origStderr := os.Stderr
stdoutR, stdoutW, err := os.Pipe()
if err != nil {
t.Fatalf("create stdout pipe: %v", err)
}
_, stderrW, err := os.Pipe()
if err != nil {
t.Fatalf("create stderr pipe: %v", err)
}
os.Stdout = stdoutW
os.Stderr = stderrW
t.Cleanup(func() {
os.Stdout = origStdout
os.Stderr = origStderr
_ = stdoutR.Close()
_ = stdoutW.Close()
_ = stderrW.Close()
})
if err := Init(InitOptions{
Level: "info",
Format: "json",
ServiceName: "sub2api",
Environment: "test",
Caller: true,
Output: OutputOptions{
ToStdout: true,
ToFile: false,
},
Sampling: SamplingOptions{Enabled: false},
}); err != nil {
t.Fatalf("Init() error: %v", err)
}
L().Info("caller-check")
Sync()
_ = stdoutW.Close()
logBytes, _ := io.ReadAll(stdoutR)
var line string
for _, item := range strings.Split(string(logBytes), "\n") {
if strings.Contains(item, "caller-check") {
line = item
break
}
}
if line == "" {
t.Fatalf("log output missing caller-check: %s", string(logBytes))
}
var payload map[string]any
if err := json.Unmarshal([]byte(line), &payload); err != nil {
t.Fatalf("parse log json failed: %v, line=%s", err, line)
}
caller, _ := payload["caller"].(string)
if !strings.Contains(caller, "logger_test.go:") {
t.Fatalf("caller should point to this test file, got: %s", caller)
}
}

161
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/logger/options.go Normal file
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package logger
import (
"os"
"path/filepath"
"strings"
"time"
)
const (
// DefaultContainerLogPath 为容器内默认日志文件路径。
DefaultContainerLogPath = "/app/data/logs/sub2api.log"
defaultLogFilename = "sub2api.log"
)
type InitOptions struct {
Level string
Format string
ServiceName string
Environment string
Caller bool
StacktraceLevel string
Output OutputOptions
Rotation RotationOptions
Sampling SamplingOptions
}
type OutputOptions struct {
ToStdout bool
ToFile bool
FilePath string
}
type RotationOptions struct {
MaxSizeMB int
MaxBackups int
MaxAgeDays int
Compress bool
LocalTime bool
}
type SamplingOptions struct {
Enabled bool
Initial int
Thereafter int
}
func (o InitOptions) normalized() InitOptions {
out := o
out.Level = strings.ToLower(strings.TrimSpace(out.Level))
if out.Level == "" {
out.Level = "info"
}
out.Format = strings.ToLower(strings.TrimSpace(out.Format))
if out.Format == "" {
out.Format = "console"
}
out.ServiceName = strings.TrimSpace(out.ServiceName)
if out.ServiceName == "" {
out.ServiceName = "sub2api"
}
out.Environment = strings.TrimSpace(out.Environment)
if out.Environment == "" {
out.Environment = "production"
}
out.StacktraceLevel = strings.ToLower(strings.TrimSpace(out.StacktraceLevel))
if out.StacktraceLevel == "" {
out.StacktraceLevel = "error"
}
if !out.Output.ToStdout && !out.Output.ToFile {
out.Output.ToStdout = true
}
out.Output.FilePath = resolveLogFilePath(out.Output.FilePath)
if out.Rotation.MaxSizeMB <= 0 {
out.Rotation.MaxSizeMB = 100
}
if out.Rotation.MaxBackups < 0 {
out.Rotation.MaxBackups = 10
}
if out.Rotation.MaxAgeDays < 0 {
out.Rotation.MaxAgeDays = 7
}
if out.Sampling.Enabled {
if out.Sampling.Initial <= 0 {
out.Sampling.Initial = 100
}
if out.Sampling.Thereafter <= 0 {
out.Sampling.Thereafter = 100
}
}
return out
}
func resolveLogFilePath(explicit string) string {
explicit = strings.TrimSpace(explicit)
if explicit != "" {
return explicit
}
dataDir := strings.TrimSpace(os.Getenv("DATA_DIR"))
if dataDir != "" {
return filepath.Join(dataDir, "logs", defaultLogFilename)
}
return DefaultContainerLogPath
}
func bootstrapOptions() InitOptions {
return InitOptions{
Level: "info",
Format: "console",
ServiceName: "sub2api",
Environment: "bootstrap",
Output: OutputOptions{
ToStdout: true,
ToFile: false,
},
Rotation: RotationOptions{
MaxSizeMB: 100,
MaxBackups: 10,
MaxAgeDays: 7,
Compress: true,
LocalTime: true,
},
Sampling: SamplingOptions{
Enabled: false,
Initial: 100,
Thereafter: 100,
},
}
}
func parseLevel(level string) (Level, bool) {
switch strings.ToLower(strings.TrimSpace(level)) {
case "debug":
return LevelDebug, true
case "info":
return LevelInfo, true
case "warn":
return LevelWarn, true
case "error":
return LevelError, true
default:
return LevelInfo, false
}
}
func parseStacktraceLevel(level string) (Level, bool) {
switch strings.ToLower(strings.TrimSpace(level)) {
case "none":
return LevelFatal + 1, true
case "error":
return LevelError, true
case "fatal":
return LevelFatal, true
default:
return LevelError, false
}
}
func samplingTick() time.Duration {
return time.Second
}

102
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/logger/options_test.go Normal file
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package logger
import (
"os"
"path/filepath"
"testing"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
func TestResolveLogFilePath_Default(t *testing.T) {
t.Setenv("DATA_DIR", "")
got := resolveLogFilePath("")
if got != DefaultContainerLogPath {
t.Fatalf("resolveLogFilePath() = %q, want %q", got, DefaultContainerLogPath)
}
}
func TestResolveLogFilePath_WithDataDir(t *testing.T) {
t.Setenv("DATA_DIR", "/tmp/sub2api-data")
got := resolveLogFilePath("")
want := filepath.Join("/tmp/sub2api-data", "logs", "sub2api.log")
if got != want {
t.Fatalf("resolveLogFilePath() = %q, want %q", got, want)
}
}
func TestResolveLogFilePath_ExplicitPath(t *testing.T) {
t.Setenv("DATA_DIR", "/tmp/ignore")
got := resolveLogFilePath("/var/log/custom.log")
if got != "/var/log/custom.log" {
t.Fatalf("resolveLogFilePath() = %q, want explicit path", got)
}
}
func TestNormalizedOptions_InvalidFallback(t *testing.T) {
t.Setenv("DATA_DIR", "")
opts := InitOptions{
Level: "TRACE",
Format: "TEXT",
ServiceName: "",
Environment: "",
StacktraceLevel: "panic",
Output: OutputOptions{
ToStdout: false,
ToFile: false,
},
Rotation: RotationOptions{
MaxSizeMB: 0,
MaxBackups: -1,
MaxAgeDays: -1,
},
Sampling: SamplingOptions{
Enabled: true,
Initial: 0,
Thereafter: 0,
},
}
out := opts.normalized()
if out.Level != "trace" {
// normalized 仅做 trim/lower，不做校验；校验在 config 层。
t.Fatalf("normalized level should preserve value for upstream validation, got %q", out.Level)
}
if !out.Output.ToStdout {
t.Fatalf("normalized output should fallback to stdout")
}
if out.Output.FilePath != DefaultContainerLogPath {
t.Fatalf("normalized file path = %q", out.Output.FilePath)
}
if out.Rotation.MaxSizeMB != 100 {
t.Fatalf("normalized max_size_mb = %d", out.Rotation.MaxSizeMB)
}
if out.Rotation.MaxBackups != 10 {
t.Fatalf("normalized max_backups = %d", out.Rotation.MaxBackups)
}
if out.Rotation.MaxAgeDays != 7 {
t.Fatalf("normalized max_age_days = %d", out.Rotation.MaxAgeDays)
}
if out.Sampling.Initial != 100 || out.Sampling.Thereafter != 100 {
t.Fatalf("normalized sampling defaults invalid: %+v", out.Sampling)
}
}
func TestBuildFileCore_InvalidPathFallback(t *testing.T) {
t.Setenv("DATA_DIR", "")
opts := bootstrapOptions()
opts.Output.ToFile = true
opts.Output.FilePath = filepath.Join(os.DevNull, "logs", "sub2api.log")
encoderCfg := zapcore.EncoderConfig{
TimeKey: "time",
LevelKey: "level",
MessageKey: "msg",
EncodeTime: zapcore.ISO8601TimeEncoder,
EncodeLevel: zapcore.CapitalLevelEncoder,
}
encoder := zapcore.NewJSONEncoder(encoderCfg)
_, _, err := buildFileCore(encoder, zap.NewAtomicLevel(), opts)
if err == nil {
t.Fatalf("buildFileCore() expected error for invalid path")
}
}

131
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/logger/slog_handler.go Normal file
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package logger
import (
"context"
"log/slog"
"strings"
"time"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
type slogZapHandler struct {
logger *zap.Logger
attrs []slog.Attr
groups []string
}
func newSlogZapHandler(logger *zap.Logger) slog.Handler {
if logger == nil {
logger = zap.NewNop()
}
return &slogZapHandler{
logger: logger,
attrs: make([]slog.Attr, 0, 8),
groups: make([]string, 0, 4),
}
}
func (h *slogZapHandler) Enabled(_ context.Context, level slog.Level) bool {
switch {
case level >= slog.LevelError:
return h.logger.Core().Enabled(LevelError)
case level >= slog.LevelWarn:
return h.logger.Core().Enabled(LevelWarn)
case level <= slog.LevelDebug:
return h.logger.Core().Enabled(LevelDebug)
default:
return h.logger.Core().Enabled(LevelInfo)
}
}
func (h *slogZapHandler) Handle(_ context.Context, record slog.Record) error {
fields := make([]zap.Field, 0, len(h.attrs)+record.NumAttrs()+3)
fields = append(fields, slogAttrsToZapFields(h.groups, h.attrs)...)
record.Attrs(func(attr slog.Attr) bool {
fields = append(fields, slogAttrToZapField(h.groups, attr))
return true
})
switch {
case record.Level >= slog.LevelError:
h.logger.Error(record.Message, fields...)
case record.Level >= slog.LevelWarn:
h.logger.Warn(record.Message, fields...)
case record.Level <= slog.LevelDebug:
h.logger.Debug(record.Message, fields...)
default:
h.logger.Info(record.Message, fields...)
}
return nil
}
func (h *slogZapHandler) WithAttrs(attrs []slog.Attr) slog.Handler {
next := *h
next.attrs = append(append([]slog.Attr{}, h.attrs...), attrs...)
return &next
}
func (h *slogZapHandler) WithGroup(name string) slog.Handler {
name = strings.TrimSpace(name)
if name == "" {
return h
}
next := *h
next.groups = append(append([]string{}, h.groups...), name)
return &next
}
func slogAttrsToZapFields(groups []string, attrs []slog.Attr) []zap.Field {
fields := make([]zap.Field, 0, len(attrs))
for _, attr := range attrs {
fields = append(fields, slogAttrToZapField(groups, attr))
}
return fields
}
func slogAttrToZapField(groups []string, attr slog.Attr) zap.Field {
if len(groups) > 0 {
attr.Key = strings.Join(append(append([]string{}, groups...), attr.Key), ".")
}
value := attr.Value.Resolve()
switch value.Kind() {
case slog.KindBool:
return zap.Bool(attr.Key, value.Bool())
case slog.KindInt64:
return zap.Int64(attr.Key, value.Int64())
case slog.KindUint64:
return zap.Uint64(attr.Key, value.Uint64())
case slog.KindFloat64:
return zap.Float64(attr.Key, value.Float64())
case slog.KindDuration:
return zap.Duration(attr.Key, value.Duration())
case slog.KindTime:
return zap.Time(attr.Key, value.Time())
case slog.KindString:
return zap.String(attr.Key, value.String())
case slog.KindGroup:
groupFields := make([]zap.Field, 0, len(value.Group()))
for _, nested := range value.Group() {
groupFields = append(groupFields, slogAttrToZapField(nil, nested))
}
return zap.Object(attr.Key, zapObjectFields(groupFields))
case slog.KindAny:
if t, ok := value.Any().(time.Time); ok {
return zap.Time(attr.Key, t)
}
return zap.Any(attr.Key, value.Any())
default:
return zap.String(attr.Key, value.String())
}
}
type zapObjectFields []zap.Field
func (z zapObjectFields) MarshalLogObject(enc zapcore.ObjectEncoder) error {
for _, field := range z {
field.AddTo(enc)
}
return nil
}

88
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/logger/slog_handler_test.go Normal file
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package logger
import (
"context"
"log/slog"
"testing"
"time"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
type captureState struct {
writes []capturedWrite
}
type capturedWrite struct {
fields []zapcore.Field
}
type captureCore struct {
state *captureState
withFields []zapcore.Field
}
func newCaptureCore() *captureCore {
return &captureCore{state: &captureState{}}
}
func (c *captureCore) Enabled(zapcore.Level) bool {
return true
}
func (c *captureCore) With(fields []zapcore.Field) zapcore.Core {
nextFields := make([]zapcore.Field, 0, len(c.withFields)+len(fields))
nextFields = append(nextFields, c.withFields...)
nextFields = append(nextFields, fields...)
return &captureCore{
state: c.state,
withFields: nextFields,
}
}
func (c *captureCore) Check(entry zapcore.Entry, ce *zapcore.CheckedEntry) *zapcore.CheckedEntry {
return ce.AddCore(entry, c)
}
func (c *captureCore) Write(entry zapcore.Entry, fields []zapcore.Field) error {
allFields := make([]zapcore.Field, 0, len(c.withFields)+len(fields))
allFields = append(allFields, c.withFields...)
allFields = append(allFields, fields...)
c.state.writes = append(c.state.writes, capturedWrite{
fields: allFields,
})
return nil
}
func (c *captureCore) Sync() error {
return nil
}
func TestSlogZapHandler_Handle_DoesNotAppendTimeField(t *testing.T) {
core := newCaptureCore()
handler := newSlogZapHandler(zap.New(core))
record := slog.NewRecord(time.Date(2026, 1, 1, 12, 0, 0, 0, time.UTC), slog.LevelInfo, "hello", 0)
record.AddAttrs(slog.String("component", "http.access"))
if err := handler.Handle(context.Background(), record); err != nil {
t.Fatalf("handle slog record: %v", err)
}
if len(core.state.writes) != 1 {
t.Fatalf("write calls = %d, want 1", len(core.state.writes))
}
var hasComponent bool
for _, field := range core.state.writes[0].fields {
if field.Key == "time" {
t.Fatalf("unexpected duplicate time field in slog adapter output")
}
if field.Key == "component" {
hasComponent = true
}
}
if !hasComponent {
t.Fatalf("component field should be preserved")
}
}

166
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/logger/stdlog_bridge_test.go Normal file
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package logger
import (
"io"
"log"
"os"
"strings"
"testing"
)
func TestInferStdLogLevel(t *testing.T) {
cases := []struct {
msg string
want Level
}{
{msg: "Warning: queue full", want: LevelWarn},
{msg: "Forward request failed: timeout", want: LevelError},
{msg: "[ERROR] upstream unavailable", want: LevelError},
{msg: "[OpenAI WS Mode] reconnect_retry account_id=22 retry=1 max_retries=5", want: LevelInfo},
{msg: "service started", want: LevelInfo},
{msg: "debug: cache miss", want: LevelDebug},
}
for _, tc := range cases {
got := inferStdLogLevel(tc.msg)
if got != tc.want {
t.Fatalf("inferStdLogLevel(%q)=%v want=%v", tc.msg, got, tc.want)
}
}
}
func TestNormalizeStdLogMessage(t *testing.T) {
raw := " [TokenRefresh] cycle complete \n total=1 failed=0 \n"
got := normalizeStdLogMessage(raw)
want := "[TokenRefresh] cycle complete total=1 failed=0"
if got != want {
t.Fatalf("normalizeStdLogMessage()=%q want=%q", got, want)
}
}
func TestStdLogBridgeRoutesLevels(t *testing.T) {
origStdout := os.Stdout
origStderr := os.Stderr
stdoutR, stdoutW, err := os.Pipe()
if err != nil {
t.Fatalf("create stdout pipe: %v", err)
}
stderrR, stderrW, err := os.Pipe()
if err != nil {
t.Fatalf("create stderr pipe: %v", err)
}
os.Stdout = stdoutW
os.Stderr = stderrW
t.Cleanup(func() {
os.Stdout = origStdout
os.Stderr = origStderr
_ = stdoutR.Close()
_ = stdoutW.Close()
_ = stderrR.Close()
_ = stderrW.Close()
})
if err := Init(InitOptions{
Level: "debug",
Format: "json",
ServiceName: "sub2api",
Environment: "test",
Output: OutputOptions{
ToStdout: true,
ToFile: false,
},
Sampling: SamplingOptions{Enabled: false},
}); err != nil {
t.Fatalf("Init() error: %v", err)
}
log.Printf("service started")
log.Printf("Warning: queue full")
log.Printf("Forward request failed: timeout")
Sync()
_ = stdoutW.Close()
_ = stderrW.Close()
stdoutBytes, _ := io.ReadAll(stdoutR)
stderrBytes, _ := io.ReadAll(stderrR)
stdoutText := string(stdoutBytes)
stderrText := string(stderrBytes)
if !strings.Contains(stdoutText, "service started") {
t.Fatalf("stdout missing info log: %s", stdoutText)
}
if !strings.Contains(stderrText, "Warning: queue full") {
t.Fatalf("stderr missing warn log: %s", stderrText)
}
if !strings.Contains(stderrText, "Forward request failed: timeout") {
t.Fatalf("stderr missing error log: %s", stderrText)
}
if !strings.Contains(stderrText, "\"legacy_stdlog\":true") {
t.Fatalf("stderr missing legacy_stdlog marker: %s", stderrText)
}
}
func TestLegacyPrintfRoutesLevels(t *testing.T) {
origStdout := os.Stdout
origStderr := os.Stderr
stdoutR, stdoutW, err := os.Pipe()
if err != nil {
t.Fatalf("create stdout pipe: %v", err)
}
stderrR, stderrW, err := os.Pipe()
if err != nil {
t.Fatalf("create stderr pipe: %v", err)
}
os.Stdout = stdoutW
os.Stderr = stderrW
t.Cleanup(func() {
os.Stdout = origStdout
os.Stderr = origStderr
_ = stdoutR.Close()
_ = stdoutW.Close()
_ = stderrR.Close()
_ = stderrW.Close()
})
if err := Init(InitOptions{
Level: "debug",
Format: "json",
ServiceName: "sub2api",
Environment: "test",
Output: OutputOptions{
ToStdout: true,
ToFile: false,
},
Sampling: SamplingOptions{Enabled: false},
}); err != nil {
t.Fatalf("Init() error: %v", err)
}
LegacyPrintf("service.test", "request started")
LegacyPrintf("service.test", "Warning: queue full")
LegacyPrintf("service.test", "forward failed: timeout")
Sync()
_ = stdoutW.Close()
_ = stderrW.Close()
stdoutBytes, _ := io.ReadAll(stdoutR)
stderrBytes, _ := io.ReadAll(stderrR)
stdoutText := string(stdoutBytes)
stderrText := string(stderrBytes)
if !strings.Contains(stdoutText, "request started") {
t.Fatalf("stdout missing info log: %s", stdoutText)
}
if !strings.Contains(stderrText, "Warning: queue full") {
t.Fatalf("stderr missing warn log: %s", stderrText)
}
if !strings.Contains(stderrText, "forward failed: timeout") {
t.Fatalf("stderr missing error log: %s", stderrText)
}
if !strings.Contains(stderrText, "\"legacy_printf\":true") {
t.Fatalf("stderr missing legacy_printf marker: %s", stderrText)
}
if !strings.Contains(stderrText, "\"component\":\"service.test\"") {
t.Fatalf("stderr missing component field: %s", stderrText)
}
}

223
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/oauth/oauth.go Normal file
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// Package oauth provides helpers for OAuth flows used by this service.
package oauth
import (
"crypto/rand"
"crypto/sha256"
"encoding/base64"
"encoding/hex"
"fmt"
"net/url"
"strings"
"sync"
"time"
)
// Claude OAuth Constants
const (
// OAuth Client ID for Claude
ClientID = "9d1c250a-e61b-44d9-88ed-5944d1962f5e"
// OAuth endpoints
AuthorizeURL = "https://claude.ai/oauth/authorize"
TokenURL = "https://platform.claude.com/v1/oauth/token"
RedirectURI = "https://platform.claude.com/oauth/code/callback"
// Scopes - Browser URL (includes org:create_api_key for user authorization)
ScopeOAuth = "org:create_api_key user:profile user:inference user:sessions:claude_code user:mcp_servers"
// Scopes - Internal API call (org:create_api_key not supported in API)
ScopeAPI = "user:profile user:inference user:sessions:claude_code user:mcp_servers"
// Scopes - Setup token (inference only)
ScopeInference = "user:inference"
// Code Verifier character set (RFC 7636 compliant)
codeVerifierCharset = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~"
// Session TTL
SessionTTL = 30 * time.Minute
)
// OAuthSession stores OAuth flow state
type OAuthSession struct {
State string `json:"state"`
CodeVerifier string `json:"code_verifier"`
Scope string `json:"scope"`
ProxyURL string `json:"proxy_url,omitempty"`
CreatedAt time.Time `json:"created_at"`
}
// SessionStore manages OAuth sessions in memory
type SessionStore struct {
mu sync.RWMutex
sessions map[string]*OAuthSession
stopOnce sync.Once
stopCh chan struct{}
}
// NewSessionStore creates a new session store
func NewSessionStore() *SessionStore {
store := &SessionStore{
sessions: make(map[string]*OAuthSession),
stopCh: make(chan struct{}),
}
go store.cleanup()
return store
}
// Stop stops the cleanup goroutine
func (s *SessionStore) Stop() {
s.stopOnce.Do(func() {
close(s.stopCh)
})
}
// Set stores a session
func (s *SessionStore) Set(sessionID string, session *OAuthSession) {
s.mu.Lock()
defer s.mu.Unlock()
s.sessions[sessionID] = session
}
// Get retrieves a session
func (s *SessionStore) Get(sessionID string) (*OAuthSession, bool) {
s.mu.RLock()
defer s.mu.RUnlock()
session, ok := s.sessions[sessionID]
if !ok {
return nil, false
}
if time.Since(session.CreatedAt) > SessionTTL {
return nil, false
}
return session, true
}
// Delete removes a session
func (s *SessionStore) Delete(sessionID string) {
s.mu.Lock()
defer s.mu.Unlock()
delete(s.sessions, sessionID)
}
// cleanup removes expired sessions periodically
func (s *SessionStore) cleanup() {
ticker := time.NewTicker(5 * time.Minute)
defer ticker.Stop()
for {
select {
case <-s.stopCh:
return
case <-ticker.C:
s.mu.Lock()
for id, session := range s.sessions {
if time.Since(session.CreatedAt) > SessionTTL {
delete(s.sessions, id)
}
}
s.mu.Unlock()
}
}
}
// GenerateRandomBytes generates cryptographically secure random bytes
func GenerateRandomBytes(n int) ([]byte, error) {
b := make([]byte, n)
_, err := rand.Read(b)
if err != nil {
return nil, err
}
return b, nil
}
// GenerateState generates a random state string for OAuth (base64url encoded)
func GenerateState() (string, error) {
bytes, err := GenerateRandomBytes(32)
if err != nil {
return "", err
}
return base64URLEncode(bytes), nil
}
// GenerateSessionID generates a unique session ID
func GenerateSessionID() (string, error) {
bytes, err := GenerateRandomBytes(16)
if err != nil {
return "", err
}
return hex.EncodeToString(bytes), nil
}
// GenerateCodeVerifier generates a PKCE code verifier using character set method
func GenerateCodeVerifier() (string, error) {
const targetLen = 32
charsetLen := len(codeVerifierCharset)
limit := 256 - (256 % charsetLen)
result := make([]byte, 0, targetLen)
randBuf := make([]byte, targetLen*2)
for len(result) < targetLen {
if _, err := rand.Read(randBuf); err != nil {
return "", err
}
for _, b := range randBuf {
if int(b) < limit {
result = append(result, codeVerifierCharset[int(b)%charsetLen])
if len(result) >= targetLen {
break
}
}
}
}
return base64URLEncode(result), nil
}
// GenerateCodeChallenge generates a PKCE code challenge using S256 method
func GenerateCodeChallenge(verifier string) string {
hash := sha256.Sum256([]byte(verifier))
return base64URLEncode(hash[:])
}
// base64URLEncode encodes bytes to base64url without padding
func base64URLEncode(data []byte) string {
encoded := base64.URLEncoding.EncodeToString(data)
return strings.TrimRight(encoded, "=")
}
// BuildAuthorizationURL builds the OAuth authorization URL with correct parameter order
func BuildAuthorizationURL(state, codeChallenge, scope string) string {
encodedRedirectURI := url.QueryEscape(RedirectURI)
encodedScope := strings.ReplaceAll(url.QueryEscape(scope), "%20", "+")
return fmt.Sprintf("%s?code=true&client_id=%s&response_type=code&redirect_uri=%s&scope=%s&code_challenge=%s&code_challenge_method=S256&state=%s",
AuthorizeURL,
ClientID,
encodedRedirectURI,
encodedScope,
codeChallenge,
state,
)
}
// TokenResponse represents the token response from OAuth provider
type TokenResponse struct {
AccessToken string `json:"access_token"`
TokenType string `json:"token_type"`
ExpiresIn int64 `json:"expires_in"`
RefreshToken string `json:"refresh_token,omitempty"`
Scope string `json:"scope,omitempty"`
Organization *OrgInfo `json:"organization,omitempty"`
Account *AccountInfo `json:"account,omitempty"`
}
// OrgInfo represents organization info from OAuth response
type OrgInfo struct {
UUID string `json:"uuid"`
}
// AccountInfo represents account info from OAuth response
type AccountInfo struct {
UUID string `json:"uuid"`
EmailAddress string `json:"email_address"`
}

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package oauth
import (
"sync"
"testing"
"time"
)
func TestSessionStore_Stop_Idempotent(t *testing.T) {
store := NewSessionStore()
store.Stop()
store.Stop()
select {
case <-store.stopCh:
// ok
case <-time.After(time.Second):
t.Fatal("stopCh 未关闭")
}
}
func TestSessionStore_Stop_Concurrent(t *testing.T) {
store := NewSessionStore()
var wg sync.WaitGroup
for range 50 {
wg.Add(1)
go func() {
defer wg.Done()
store.Stop()
}()
}
wg.Wait()
select {
case <-store.stopCh:
// ok
case <-time.After(time.Second):
t.Fatal("stopCh 未关闭")
}
}

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// Package openai provides helpers and types for OpenAI API integration.
package openai
import _ "embed"
// Model represents an OpenAI model
type Model struct {
ID string `json:"id"`
Object string `json:"object"`
Created int64 `json:"created"`
OwnedBy string `json:"owned_by"`
Type string `json:"type"`
DisplayName string `json:"display_name"`
}
// DefaultModels OpenAI models list
var DefaultModels = []Model{
{ID: "gpt-5.4", Object: "model", Created: 1738368000, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5.4"},
{ID: "gpt-5.3-codex", Object: "model", Created: 1735689600, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5.3 Codex"},
{ID: "gpt-5.3-codex-spark", Object: "model", Created: 1735689600, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5.3 Codex Spark"},
{ID: "gpt-5.2", Object: "model", Created: 1733875200, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5.2"},
{ID: "gpt-5.2-codex", Object: "model", Created: 1733011200, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5.2 Codex"},
{ID: "gpt-5.1-codex-max", Object: "model", Created: 1730419200, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5.1 Codex Max"},
{ID: "gpt-5.1-codex", Object: "model", Created: 1730419200, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5.1 Codex"},
{ID: "gpt-5.1", Object: "model", Created: 1731456000, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5.1"},
{ID: "gpt-5.1-codex-mini", Object: "model", Created: 1730419200, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5.1 Codex Mini"},
{ID: "gpt-5", Object: "model", Created: 1722988800, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5"},
}
// DefaultModelIDs returns the default model ID list
func DefaultModelIDs() []string {
ids := make([]string, len(DefaultModels))
for i, m := range DefaultModels {
ids[i] = m.ID
}
return ids
}
// DefaultTestModel default model for testing OpenAI accounts
const DefaultTestModel = "gpt-5.1-codex"
// DefaultInstructions default instructions for non-Codex CLI requests
// Content loaded from instructions.txt at compile time
//
//go:embed instructions.txt
var DefaultInstructions string

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You are Codex, based on GPT-5. You are running as a coding agent in the Codex CLI on a user's computer.
## General
- When searching for text or files, prefer using `rg` or `rg --files` respectively because `rg` is much faster than alternatives like `grep`. (If the `rg` command is not found, then use alternatives.)
## Editing constraints
- Default to ASCII when editing or creating files. Only introduce non-ASCII or other Unicode characters when there is a clear justification and the file already uses them.
- Add succinct code comments that explain what is going on if code is not self-explanatory. You should not add comments like \"Assigns the value to the variable\", but a brief comment might be useful ahead of a complex code block that the user would otherwise have to spend time parsing out. Usage of these comments should be rare.
- Try to use apply_patch for single file edits, but it is fine to explore other options to make the edit if it does not work well. Do not use apply_patch for changes that are auto-generated (i.e. generating package.json or running a lint or format command like gofmt) or when scripting is more efficient (such as search and replacing a string across a codebase).
- You may be in a dirty git worktree.
* NEVER revert existing changes you did not make unless explicitly requested, since these changes were made by the user.
* If asked to make a commit or code edits and there are unrelated changes to your work or changes that you didn't make in those files, don't revert those changes.
* If the changes are in files you've touched recently, you should read carefully and understand how you can work with the changes rather than reverting them.
* If the changes are in unrelated files, just ignore them and don't revert them.
- Do not amend a commit unless explicitly requested to do so.
- While you are working, you might notice unexpected changes that you didn't make. If this happens, STOP IMMEDIATELY and ask the user how they would like to proceed.
- **NEVER** use destructive commands like `git reset --hard` or `git checkout --` unless specifically requested or approved by the user.
## Plan tool
When using the planning tool:
- Skip using the planning tool for straightforward tasks (roughly the easiest 25%).
- Do not make single-step plans.
- When you made a plan, update it after having performed one of the sub-tasks that you shared on the plan.
## Codex CLI harness, sandboxing, and approvals
The Codex CLI harness supports several different configurations for sandboxing and escalation approvals that the user can choose from.
Filesystem sandboxing defines which files can be read or written. The options for `sandbox_mode` are:
- **read-only**: The sandbox only permits reading files.
- **workspace-write**: The sandbox permits reading files, and editing files in `cwd` and `writable_roots`. Editing files in other directories requires approval.
- **danger-full-access**: No filesystem sandboxing - all commands are permitted.
Network sandboxing defines whether network can be accessed without approval. Options for `network_access` are:
- **restricted**: Requires approval
- **enabled**: No approval needed
Approvals are your mechanism to get user consent to run shell commands without the sandbox. Possible configuration options for `approval_policy` are
- **untrusted**: The harness will escalate most commands for user approval, apart from a limited allowlist of safe \"read\" commands.
- **on-failure**: The harness will allow all commands to run in the sandbox (if enabled), and failures will be escalated to the user for approval to run again without the sandbox.
- **on-request**: Commands will be run in the sandbox by default, and you can specify in your tool call if you want to escalate a command to run without sandboxing. (Note that this mode is not always available. If it is, you'll see parameters for it in the `shell` command description.)
- **never**: This is a non-interactive mode where you may NEVER ask the user for approval to run commands. Instead, you must always persist and work around constraints to solve the task for the user. You MUST do your utmost best to finish the task and validate your work before yielding. If this mode is paired with `danger-full-access`, take advantage of it to deliver the best outcome for the user. Further, in this mode, your default testing philosophy is overridden: Even if you don't see local patterns for testing, you may add tests and scripts to validate your work. Just remove them before yielding.
When you are running with `approval_policy == on-request`, and sandboxing enabled, here are scenarios where you'll need to request approval:
- You need to run a command that writes to a directory that requires it (e.g. running tests that write to /var)
- You need to run a GUI app (e.g., open/xdg-open/osascript) to open browsers or files.
- You are running sandboxed and need to run a command that requires network access (e.g. installing packages)
- If you run a command that is important to solving the user's query, but it fails because of sandboxing, rerun the command with approval. ALWAYS proceed to use the `sandbox_permissions` and `justification` parameters - do not message the user before requesting approval for the command.
- You are about to take a potentially destructive action such as an `rm` or `git reset` that the user did not explicitly ask for
- (for all of these, you should weigh alternative paths that do not require approval)
When `sandbox_mode` is set to read-only, you'll need to request approval for any command that isn't a read.
You will be told what filesystem sandboxing, network sandboxing, and approval mode are active in a developer or user message. If you are not told about this, assume that you are running with workspace-write, network sandboxing enabled, and approval on-failure.
Although they introduce friction to the user because your work is paused until the user responds, you should leverage them when necessary to accomplish important work. If the completing the task requires escalated permissions, Do not let these settings or the sandbox deter you from attempting to accomplish the user's task unless it is set to \"never\", in which case never ask for approvals.
When requesting approval to execute a command that will require escalated privileges:
- Provide the `sandbox_permissions` parameter with the value `\"require_escalated\"`
- Include a short, 1 sentence explanation for why you need escalated permissions in the justification parameter
## Special user requests
- If the user makes a simple request (such as asking for the time) which you can fulfill by running a terminal command (such as `date`), you should do so.
- If the user asks for a \"review\", default to a code review mindset: prioritise identifying bugs, risks, behavioural regressions, and missing tests. Findings must be the primary focus of the response - keep summaries or overviews brief and only after enumerating the issues. Present findings first (ordered by severity with file/line references), follow with open questions or assumptions, and offer a change-summary only as a secondary detail. If no findings are discovered, state that explicitly and mention any residual risks or testing gaps.
## Frontend tasks
When doing frontend design tasks, avoid collapsing into \"AI slop\" or safe, average-looking layouts.
Aim for interfaces that feel intentional, bold, and a bit surprising.
- Typography: Use expressive, purposeful fonts and avoid default stacks (Inter, Roboto, Arial, system).
- Color & Look: Choose a clear visual direction; define CSS variables; avoid purple-on-white defaults. No purple bias or dark mode bias.
- Motion: Use a few meaningful animations (page-load, staggered reveals) instead of generic micro-motions.
- Background: Don't rely on flat, single-color backgrounds; use gradients, shapes, or subtle patterns to build atmosphere.
- Overall: Avoid boilerplate layouts and interchangeable UI patterns. Vary themes, type families, and visual languages across outputs.
- Ensure the page loads properly on both desktop and mobile
Exception: If working within an existing website or design system, preserve the established patterns, structure, and visual language.
## Presenting your work and final message
You are producing plain text that will later be styled by the CLI. Follow these rules exactly. Formatting should make results easy to scan, but not feel mechanical. Use judgment to decide how much structure adds value.
- Default: be very concise; friendly coding teammate tone.
- Ask only when needed; suggest ideas; mirror the user's style.
- For substantial work, summarize clearly; follow final‑answer formatting.
- Skip heavy formatting for simple confirmations.
- Don't dump large files you've written; reference paths only.
- No \"save/copy this file\" - User is on the same machine.
- Offer logical next steps (tests, commits, build) briefly; add verify steps if you couldn't do something.
- For code changes:
* Lead with a quick explanation of the change, and then give more details on the context covering where and why a change was made. Do not start this explanation with \"summary\", just jump right in.
* If there are natural next steps the user may want to take, suggest them at the end of your response. Do not make suggestions if there are no natural next steps.
* When suggesting multiple options, use numeric lists for the suggestions so the user can quickly respond with a single number.
- The user does not command execution outputs. When asked to show the output of a command (e.g. `git show`), relay the important details in your answer or summarize the key lines so the user understands the result.
### Final answer structure and style guidelines
- Plain text; CLI handles styling. Use structure only when it helps scanability.
- Headers: optional; short Title Case (1-3 words) wrapped in **…**; no blank line before the first bullet; add only if they truly help.
- Bullets: use - ; merge related points; keep to one line when possible; 4–6 per list ordered by importance; keep phrasing consistent.
- Monospace: backticks for commands/paths/env vars/code ids and inline examples; use for literal keyword bullets; never combine with **.
- Code samples or multi-line snippets should be wrapped in fenced code blocks; include an info string as often as possible.
- Structure: group related bullets; order sections general → specific → supporting; for subsections, start with a bolded keyword bullet, then items; match complexity to the task.
- Tone: collaborative, concise, factual; present tense, active voice; self‑contained; no \"above/below\"; parallel wording.
- Don'ts: no nested bullets/hierarchies; no ANSI codes; don't cram unrelated keywords; keep keyword lists short—wrap/reformat if long; avoid naming formatting styles in answers.
- Adaptation: code explanations → precise, structured with code refs; simple tasks → lead with outcome; big changes → logical walkthrough + rationale + next actions; casual one-offs → plain sentences, no headers/bullets.
- File References: When referencing files in your response follow the below rules:
* Use inline code to make file paths clickable.
* Each reference should have a stand alone path. Even if it's the same file.
* Accepted: absolute, workspace‑relative, a/ or b/ diff prefixes, or bare filename/suffix.
* Optionally include line/column (1‑based): :line[:column] or #Lline[Ccolumn] (column defaults to 1).
* Do not use URIs like file://, vscode://, or https://.
* Do not provide range of lines
* Examples: src/app.ts, src/app.ts:42, b/server/index.js#L10, C:\\repo\\project\\main.rs:12:5

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package openai
import (
"crypto/rand"
"crypto/sha256"
"encoding/base64"
"encoding/hex"
"encoding/json"
"fmt"
"net/url"
"strings"
"sync"
"time"
)
// OpenAI OAuth Constants (from CRS project - Codex CLI client)
const (
// OAuth Client ID for OpenAI (Codex CLI official)
ClientID = "app_EMoamEEZ73f0CkXaXp7hrann"
// OAuth Client ID for Sora mobile flow (aligned with sora2api)
SoraClientID = "app_LlGpXReQgckcGGUo2JrYvtJK"
// OAuth endpoints
AuthorizeURL = "https://auth.openai.com/oauth/authorize"
TokenURL = "https://auth.openai.com/oauth/token"
// Default redirect URI (can be customized)
DefaultRedirectURI = "http://localhost:1455/auth/callback"
// Scopes
DefaultScopes = "openid profile email offline_access"
// RefreshScopes - scope for token refresh (without offline_access, aligned with CRS project)
RefreshScopes = "openid profile email"
// Session TTL
SessionTTL = 30 * time.Minute
)
const (
// OAuthPlatformOpenAI uses OpenAI Codex-compatible OAuth client.
OAuthPlatformOpenAI = "openai"
// OAuthPlatformSora uses Sora OAuth client.
OAuthPlatformSora = "sora"
)
// OAuthSession stores OAuth flow state for OpenAI
type OAuthSession struct {
State string `json:"state"`
CodeVerifier string `json:"code_verifier"`
ClientID string `json:"client_id,omitempty"`
ProxyURL string `json:"proxy_url,omitempty"`
RedirectURI string `json:"redirect_uri"`
CreatedAt time.Time `json:"created_at"`
}
// SessionStore manages OAuth sessions in memory
type SessionStore struct {
mu sync.RWMutex
sessions map[string]*OAuthSession
stopOnce sync.Once
stopCh chan struct{}
}
// NewSessionStore creates a new session store
func NewSessionStore() *SessionStore {
store := &SessionStore{
sessions: make(map[string]*OAuthSession),
stopCh: make(chan struct{}),
}
// Start cleanup goroutine
go store.cleanup()
return store
}
// Set stores a session
func (s *SessionStore) Set(sessionID string, session *OAuthSession) {
s.mu.Lock()
defer s.mu.Unlock()
s.sessions[sessionID] = session
}
// Get retrieves a session
func (s *SessionStore) Get(sessionID string) (*OAuthSession, bool) {
s.mu.RLock()
defer s.mu.RUnlock()
session, ok := s.sessions[sessionID]
if !ok {
return nil, false
}
// Check if expired
if time.Since(session.CreatedAt) > SessionTTL {
return nil, false
}
return session, true
}
// Delete removes a session
func (s *SessionStore) Delete(sessionID string) {
s.mu.Lock()
defer s.mu.Unlock()
delete(s.sessions, sessionID)
}
// Stop stops the cleanup goroutine
func (s *SessionStore) Stop() {
s.stopOnce.Do(func() {
close(s.stopCh)
})
}
// cleanup removes expired sessions periodically
func (s *SessionStore) cleanup() {
ticker := time.NewTicker(5 * time.Minute)
defer ticker.Stop()
for {
select {
case <-s.stopCh:
return
case <-ticker.C:
s.mu.Lock()
for id, session := range s.sessions {
if time.Since(session.CreatedAt) > SessionTTL {
delete(s.sessions, id)
}
}
s.mu.Unlock()
}
}
}
// GenerateRandomBytes generates cryptographically secure random bytes
func GenerateRandomBytes(n int) ([]byte, error) {
b := make([]byte, n)
_, err := rand.Read(b)
if err != nil {
return nil, err
}
return b, nil
}
// GenerateState generates a random state string for OAuth
func GenerateState() (string, error) {
bytes, err := GenerateRandomBytes(32)
if err != nil {
return "", err
}
return hex.EncodeToString(bytes), nil
}
// GenerateSessionID generates a unique session ID
func GenerateSessionID() (string, error) {
bytes, err := GenerateRandomBytes(16)
if err != nil {
return "", err
}
return hex.EncodeToString(bytes), nil
}
// GenerateCodeVerifier generates a PKCE code verifier (64 bytes -> hex for OpenAI)
// OpenAI uses hex encoding instead of base64url
func GenerateCodeVerifier() (string, error) {
bytes, err := GenerateRandomBytes(64)
if err != nil {
return "", err
}
return hex.EncodeToString(bytes), nil
}
// GenerateCodeChallenge generates a PKCE code challenge using S256 method
// Uses base64url encoding as per RFC 7636
func GenerateCodeChallenge(verifier string) string {
hash := sha256.Sum256([]byte(verifier))
return base64URLEncode(hash[:])
}
// base64URLEncode encodes bytes to base64url without padding
func base64URLEncode(data []byte) string {
encoded := base64.URLEncoding.EncodeToString(data)
// Remove padding
return strings.TrimRight(encoded, "=")
}
// BuildAuthorizationURL builds the OpenAI OAuth authorization URL
func BuildAuthorizationURL(state, codeChallenge, redirectURI string) string {
return BuildAuthorizationURLForPlatform(state, codeChallenge, redirectURI, OAuthPlatformOpenAI)
}
// BuildAuthorizationURLForPlatform builds authorization URL by platform.
func BuildAuthorizationURLForPlatform(state, codeChallenge, redirectURI, platform string) string {
if redirectURI == "" {
redirectURI = DefaultRedirectURI
}
clientID, codexFlow := OAuthClientConfigByPlatform(platform)
params := url.Values{}
params.Set("response_type", "code")
params.Set("client_id", clientID)
params.Set("redirect_uri", redirectURI)
params.Set("scope", DefaultScopes)
params.Set("state", state)
params.Set("code_challenge", codeChallenge)
params.Set("code_challenge_method", "S256")
// OpenAI specific parameters
params.Set("id_token_add_organizations", "true")
if codexFlow {
params.Set("codex_cli_simplified_flow", "true")
}
return fmt.Sprintf("%s?%s", AuthorizeURL, params.Encode())
}
// OAuthClientConfigByPlatform returns oauth client_id and whether codex simplified flow should be enabled.
// Sora 授权流程复用 Codex CLI 的 client_id（支持 localhost redirect_uri），
// 但不启用 codex_cli_simplified_flow；拿到的 access_token 绑定同一 OpenAI 账号，对 Sora API 同样可用。
func OAuthClientConfigByPlatform(platform string) (clientID string, codexFlow bool) {
switch strings.ToLower(strings.TrimSpace(platform)) {
case OAuthPlatformSora:
return ClientID, false
default:
return ClientID, true
}
}
// TokenRequest represents the token exchange request body
type TokenRequest struct {
GrantType string `json:"grant_type"`
ClientID string `json:"client_id"`
Code string `json:"code"`
RedirectURI string `json:"redirect_uri"`
CodeVerifier string `json:"code_verifier"`
}
// TokenResponse represents the token response from OpenAI OAuth
type TokenResponse struct {
AccessToken string `json:"access_token"`
IDToken string `json:"id_token"`
TokenType string `json:"token_type"`
ExpiresIn int64 `json:"expires_in"`
RefreshToken string `json:"refresh_token,omitempty"`
Scope string `json:"scope,omitempty"`
}
// RefreshTokenRequest represents the refresh token request
type RefreshTokenRequest struct {
GrantType string `json:"grant_type"`
RefreshToken string `json:"refresh_token"`
ClientID string `json:"client_id"`
Scope string `json:"scope"`
}
// IDTokenClaims represents the claims from OpenAI ID Token
type IDTokenClaims struct {
// Standard claims
Sub string `json:"sub"`
Email string `json:"email"`
EmailVerified bool `json:"email_verified"`
Iss string `json:"iss"`
Aud []string `json:"aud"` // OpenAI returns aud as an array
Exp int64 `json:"exp"`
Iat int64 `json:"iat"`
// OpenAI specific claims (nested under https://api.openai.com/auth)
OpenAIAuth *OpenAIAuthClaims `json:"https://api.openai.com/auth,omitempty"`
}
// OpenAIAuthClaims represents the OpenAI specific auth claims
type OpenAIAuthClaims struct {
ChatGPTAccountID string `json:"chatgpt_account_id"`
ChatGPTUserID string `json:"chatgpt_user_id"`
ChatGPTPlanType string `json:"chatgpt_plan_type"`
UserID string `json:"user_id"`
Organizations []OrganizationClaim `json:"organizations"`
}
// OrganizationClaim represents an organization in the ID Token
type OrganizationClaim struct {
ID string `json:"id"`
Role string `json:"role"`
Title string `json:"title"`
IsDefault bool `json:"is_default"`
}
// BuildTokenRequest creates a token exchange request for OpenAI
func BuildTokenRequest(code, codeVerifier, redirectURI string) *TokenRequest {
if redirectURI == "" {
redirectURI = DefaultRedirectURI
}
return &TokenRequest{
GrantType: "authorization_code",
ClientID: ClientID,
Code: code,
RedirectURI: redirectURI,
CodeVerifier: codeVerifier,
}
}
// BuildRefreshTokenRequest creates a refresh token request for OpenAI
func BuildRefreshTokenRequest(refreshToken string) *RefreshTokenRequest {
return &RefreshTokenRequest{
GrantType: "refresh_token",
RefreshToken: refreshToken,
ClientID: ClientID,
Scope: RefreshScopes,
}
}
// ToFormData converts TokenRequest to URL-encoded form data
func (r *TokenRequest) ToFormData() string {
params := url.Values{}
params.Set("grant_type", r.GrantType)
params.Set("client_id", r.ClientID)
params.Set("code", r.Code)
params.Set("redirect_uri", r.RedirectURI)
params.Set("code_verifier", r.CodeVerifier)
return params.Encode()
}
// ToFormData converts RefreshTokenRequest to URL-encoded form data
func (r *RefreshTokenRequest) ToFormData() string {
params := url.Values{}
params.Set("grant_type", r.GrantType)
params.Set("client_id", r.ClientID)
params.Set("refresh_token", r.RefreshToken)
params.Set("scope", r.Scope)
return params.Encode()
}
// DecodeIDToken decodes the ID Token JWT payload without validating expiration.
// Use this for best-effort extraction (e.g., during data import) where the token may be expired.
func DecodeIDToken(idToken string) (*IDTokenClaims, error) {
parts := strings.Split(idToken, ".")
if len(parts) != 3 {
return nil, fmt.Errorf("invalid JWT format: expected 3 parts, got %d", len(parts))
}
// Decode payload (second part)
payload := parts[1]
// Add padding if necessary
switch len(payload) % 4 {
case 2:
payload += "=="
case 3:
payload += "="
}
decoded, err := base64.URLEncoding.DecodeString(payload)
if err != nil {
// Try standard encoding
decoded, err = base64.StdEncoding.DecodeString(payload)
if err != nil {
return nil, fmt.Errorf("failed to decode JWT payload: %w", err)
}
}
var claims IDTokenClaims
if err := json.Unmarshal(decoded, &claims); err != nil {
return nil, fmt.Errorf("failed to parse JWT claims: %w", err)
}
return &claims, nil
}
// ParseIDToken parses the ID Token JWT and extracts claims.
// 注意：当前仅解码 payload 并校验 exp，未验证 JWT 签名。
// 生产环境如需用 ID Token 做授权决策，应通过 OpenAI 的 JWKS 端点验证签名：
//
// https://auth.openai.com/.well-known/jwks.json
func ParseIDToken(idToken string) (*IDTokenClaims, error) {
claims, err := DecodeIDToken(idToken)
if err != nil {
return nil, err
}
// 校验 ID Token 是否已过期（允许 2 分钟时钟偏差，防止因服务器时钟略有差异误判刚颁发的令牌）
const clockSkewTolerance = 120 // 秒
now := time.Now().Unix()
if claims.Exp > 0 && now > claims.Exp+clockSkewTolerance {
return nil, fmt.Errorf("id_token has expired (exp: %d, now: %d, skew_tolerance: %ds)", claims.Exp, now, clockSkewTolerance)
}
return claims, nil
}
// UserInfo represents user information extracted from ID Token claims.
type UserInfo struct {
Email string
ChatGPTAccountID string
ChatGPTUserID string
PlanType string
UserID string
OrganizationID string
Organizations []OrganizationClaim
}
// GetUserInfo extracts user info from ID Token claims
func (c *IDTokenClaims) GetUserInfo() *UserInfo {
info := &UserInfo{
Email: c.Email,
}
if c.OpenAIAuth != nil {
info.ChatGPTAccountID = c.OpenAIAuth.ChatGPTAccountID
info.ChatGPTUserID = c.OpenAIAuth.ChatGPTUserID
info.PlanType = c.OpenAIAuth.ChatGPTPlanType
info.UserID = c.OpenAIAuth.UserID
info.Organizations = c.OpenAIAuth.Organizations
// Get default organization ID
for _, org := range c.OpenAIAuth.Organizations {
if org.IsDefault {
info.OrganizationID = org.ID
break
}
}
// If no default, use first org
if info.OrganizationID == "" && len(c.OpenAIAuth.Organizations) > 0 {
info.OrganizationID = c.OpenAIAuth.Organizations[0].ID
}
}
return info
}

82
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/openai/oauth_test.go Normal file
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package openai
import (
"net/url"
"sync"
"testing"
"time"
)
func TestSessionStore_Stop_Idempotent(t *testing.T) {
store := NewSessionStore()
store.Stop()
store.Stop()
select {
case <-store.stopCh:
// ok
case <-time.After(time.Second):
t.Fatal("stopCh 未关闭")
}
}
func TestSessionStore_Stop_Concurrent(t *testing.T) {
store := NewSessionStore()
var wg sync.WaitGroup
for range 50 {
wg.Add(1)
go func() {
defer wg.Done()
store.Stop()
}()
}
wg.Wait()
select {
case <-store.stopCh:
// ok
case <-time.After(time.Second):
t.Fatal("stopCh 未关闭")
}
}
func TestBuildAuthorizationURLForPlatform_OpenAI(t *testing.T) {
authURL := BuildAuthorizationURLForPlatform("state-1", "challenge-1", DefaultRedirectURI, OAuthPlatformOpenAI)
parsed, err := url.Parse(authURL)
if err != nil {
t.Fatalf("Parse URL failed: %v", err)
}
q := parsed.Query()
if got := q.Get("client_id"); got != ClientID {
t.Fatalf("client_id mismatch: got=%q want=%q", got, ClientID)
}
if got := q.Get("codex_cli_simplified_flow"); got != "true" {
t.Fatalf("codex flow mismatch: got=%q want=true", got)
}
if got := q.Get("id_token_add_organizations"); got != "true" {
t.Fatalf("id_token_add_organizations mismatch: got=%q want=true", got)
}
}
// TestBuildAuthorizationURLForPlatform_Sora 验证 Sora 平台复用 Codex CLI 的 client_id，
// 但不启用 codex_cli_simplified_flow。
func TestBuildAuthorizationURLForPlatform_Sora(t *testing.T) {
authURL := BuildAuthorizationURLForPlatform("state-2", "challenge-2", DefaultRedirectURI, OAuthPlatformSora)
parsed, err := url.Parse(authURL)
if err != nil {
t.Fatalf("Parse URL failed: %v", err)
}
q := parsed.Query()
if got := q.Get("client_id"); got != ClientID {
t.Fatalf("client_id mismatch: got=%q want=%q (Sora should reuse Codex CLI client_id)", got, ClientID)
}
if got := q.Get("codex_cli_simplified_flow"); got != "" {
t.Fatalf("codex flow should be empty for sora, got=%q", got)
}
if got := q.Get("id_token_add_organizations"); got != "true" {
t.Fatalf("id_token_add_organizations mismatch: got=%q want=true", got)
}
}

83
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/openai/request.go Normal file
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package openai
import "strings"
// CodexCLIUserAgentPrefixes matches Codex CLI User-Agent patterns
// Examples: "codex_vscode/1.0.0", "codex_cli_rs/0.1.2"
var CodexCLIUserAgentPrefixes = []string{
"codex_vscode/",
"codex_cli_rs/",
}
// CodexOfficialClientUserAgentPrefixes matches Codex 官方客户端家族 User-Agent 前缀。
// 该列表仅用于 OpenAI OAuth `codex_cli_only` 访问限制判定。
var CodexOfficialClientUserAgentPrefixes = []string{
"codex_cli_rs/",
"codex_vscode/",
"codex_app/",
"codex_chatgpt_desktop/",
"codex_atlas/",
"codex_exec/",
"codex_sdk_ts/",
"codex ",
}
// CodexOfficialClientOriginatorPrefixes matches Codex 官方客户端家族 originator 前缀。
// 说明：OpenAI 官方 Codex 客户端并不只使用固定的 codex_app 标识。
// 例如 codex_cli_rs、codex_vscode、codex_chatgpt_desktop、codex_atlas、codex_exec、codex_sdk_ts 等。
var CodexOfficialClientOriginatorPrefixes = []string{
"codex_",
"codex ",
}
// IsCodexCLIRequest checks if the User-Agent indicates a Codex CLI request
func IsCodexCLIRequest(userAgent string) bool {
ua := normalizeCodexClientHeader(userAgent)
if ua == "" {
return false
}
return matchCodexClientHeaderPrefixes(ua, CodexCLIUserAgentPrefixes)
}
// IsCodexOfficialClientRequest checks if the User-Agent indicates a Codex 官方客户端请求。
// 与 IsCodexCLIRequest 解耦，避免影响历史兼容逻辑。
func IsCodexOfficialClientRequest(userAgent string) bool {
ua := normalizeCodexClientHeader(userAgent)
if ua == "" {
return false
}
return matchCodexClientHeaderPrefixes(ua, CodexOfficialClientUserAgentPrefixes)
}
// IsCodexOfficialClientOriginator checks if originator indicates a Codex 官方客户端请求。
func IsCodexOfficialClientOriginator(originator string) bool {
v := normalizeCodexClientHeader(originator)
if v == "" {
return false
}
return matchCodexClientHeaderPrefixes(v, CodexOfficialClientOriginatorPrefixes)
}
// IsCodexOfficialClientByHeaders checks whether the request headers indicate an
// official Codex client family request.
func IsCodexOfficialClientByHeaders(userAgent, originator string) bool {
return IsCodexOfficialClientRequest(userAgent) || IsCodexOfficialClientOriginator(originator)
}
func normalizeCodexClientHeader(value string) string {
return strings.ToLower(strings.TrimSpace(value))
}
func matchCodexClientHeaderPrefixes(value string, prefixes []string) bool {
for _, prefix := range prefixes {
normalizedPrefix := normalizeCodexClientHeader(prefix)
if normalizedPrefix == "" {
continue
}
// 优先前缀匹配；若 UA/Originator 被网关拼接为复合字符串时，退化为包含匹配。
if strings.HasPrefix(value, normalizedPrefix) || strings.Contains(value, normalizedPrefix) {
return true
}
}
return false
}

110
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/openai/request_test.go Normal file
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package openai
import "testing"
func TestIsCodexCLIRequest(t *testing.T) {
tests := []struct {
name string
ua string
want bool
}{
{name: "codex_cli_rs 前缀", ua: "codex_cli_rs/0.1.0", want: true},
{name: "codex_vscode 前缀", ua: "codex_vscode/1.2.3", want: true},
{name: "大小写混合", ua: "Codex_CLI_Rs/0.1.0", want: true},
{name: "复合 UA 包含 codex", ua: "Mozilla/5.0 codex_cli_rs/0.1.0", want: true},
{name: "空白包裹", ua: " codex_vscode/1.2.3 ", want: true},
{name: "非 codex", ua: "curl/8.0.1", want: false},
{name: "空字符串", ua: "", want: false},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := IsCodexCLIRequest(tt.ua)
if got != tt.want {
t.Fatalf("IsCodexCLIRequest(%q) = %v, want %v", tt.ua, got, tt.want)
}
})
}
}
func TestIsCodexOfficialClientRequest(t *testing.T) {
tests := []struct {
name string
ua string
want bool
}{
{name: "codex_cli_rs 前缀", ua: "codex_cli_rs/0.98.0", want: true},
{name: "codex_vscode 前缀", ua: "codex_vscode/1.0.0", want: true},
{name: "codex_app 前缀", ua: "codex_app/0.1.0", want: true},
{name: "codex_chatgpt_desktop 前缀", ua: "codex_chatgpt_desktop/1.0.0", want: true},
{name: "codex_atlas 前缀", ua: "codex_atlas/1.0.0", want: true},
{name: "codex_exec 前缀", ua: "codex_exec/0.1.0", want: true},
{name: "codex_sdk_ts 前缀", ua: "codex_sdk_ts/0.1.0", want: true},
{name: "Codex 桌面 UA", ua: "Codex Desktop/1.2.3", want: true},
{name: "复合 UA 包含 codex_app", ua: "Mozilla/5.0 codex_app/0.1.0", want: true},
{name: "大小写混合", ua: "Codex_VSCode/1.2.3", want: true},
{name: "非 codex", ua: "curl/8.0.1", want: false},
{name: "空字符串", ua: "", want: false},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := IsCodexOfficialClientRequest(tt.ua)
if got != tt.want {
t.Fatalf("IsCodexOfficialClientRequest(%q) = %v, want %v", tt.ua, got, tt.want)
}
})
}
}
func TestIsCodexOfficialClientOriginator(t *testing.T) {
tests := []struct {
name string
originator string
want bool
}{
{name: "codex_cli_rs", originator: "codex_cli_rs", want: true},
{name: "codex_vscode", originator: "codex_vscode", want: true},
{name: "codex_app", originator: "codex_app", want: true},
{name: "codex_chatgpt_desktop", originator: "codex_chatgpt_desktop", want: true},
{name: "codex_atlas", originator: "codex_atlas", want: true},
{name: "codex_exec", originator: "codex_exec", want: true},
{name: "codex_sdk_ts", originator: "codex_sdk_ts", want: true},
{name: "Codex 前缀", originator: "Codex Desktop", want: true},
{name: "空白包裹", originator: " codex_vscode ", want: true},
{name: "非 codex", originator: "my_client", want: false},
{name: "空字符串", originator: "", want: false},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := IsCodexOfficialClientOriginator(tt.originator)
if got != tt.want {
t.Fatalf("IsCodexOfficialClientOriginator(%q) = %v, want %v", tt.originator, got, tt.want)
}
})
}
}
func TestIsCodexOfficialClientByHeaders(t *testing.T) {
tests := []struct {
name string
ua string
originator string
want bool
}{
{name: "仅 originator 命中 desktop", originator: "Codex Desktop", want: true},
{name: "仅 originator 命中 vscode", originator: "codex_vscode", want: true},
{name: "仅 ua 命中 desktop", ua: "Codex Desktop/1.2.3", want: true},
{name: "ua 与 originator 都未命中", ua: "curl/8.0.1", originator: "my_client", want: false},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := IsCodexOfficialClientByHeaders(tt.ua, tt.originator)
if got != tt.want {
t.Fatalf("IsCodexOfficialClientByHeaders(%q, %q) = %v, want %v", tt.ua, tt.originator, got, tt.want)
}
})
}
}

43
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/pagination/pagination.go Normal file
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// Package pagination provides types and helpers for paginated responses.
package pagination
// PaginationParams 分页参数
type PaginationParams struct {
Page int
PageSize int
}
// PaginationResult 分页结果
type PaginationResult struct {
Total int64
Page int
PageSize int
Pages int
}
// DefaultPagination 默认分页参数
func DefaultPagination() PaginationParams {
return PaginationParams{
Page: 1,
PageSize: 20,
}
}
// Offset 计算偏移量
func (p PaginationParams) Offset() int {
if p.Page < 1 {
p.Page = 1
}
return (p.Page - 1) * p.PageSize
}
// Limit 获取限制数
func (p PaginationParams) Limit() int {
if p.PageSize < 1 {
return 20
}
if p.PageSize > 100 {
return 100
}
return p.PageSize
}

66
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/proxyurl/parse.go Normal file
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// Package proxyurl 提供代理 URL 的统一验证（fail-fast，无效代理不回退直连）
//
// 所有需要解析代理 URL 的地方必须通过此包的 Parse 函数。
// 直接使用 url.Parse 处理代理 URL 是被禁止的。
// 这确保了 fail-fast 行为：无效代理配置在创建时立即失败，
// 而不是在运行时静默回退到直连（产生 IP 关联风险）。
package proxyurl
import (
"fmt"
"net/url"
"strings"
)
// allowedSchemes 代理协议白名单
var allowedSchemes = map[string]bool{
"http": true,
"https": true,
"socks5": true,
"socks5h": true,
}
// Parse 解析并验证代理 URL。
//
// 语义:
// - 空字符串 → ("", nil, nil)，表示直连
// - 非空且有效 → (trimmed, *url.URL, nil)
// - 非空但无效 → ("", nil, error)，fail-fast 不回退
//
// 验证规则:
// - TrimSpace 后为空视为直连
// - url.Parse 失败返回 error（不含原始 URL，防凭据泄露）
// - Host 为空返回 error（用 Redacted() 脱敏）
// - Scheme 必须为 http/https/socks5/socks5h
// - socks5:// 自动升级为 socks5h://（确保 DNS 由代理端解析，防止 DNS 泄漏）
func Parse(raw string) (trimmed string, parsed *url.URL, err error) {
trimmed = strings.TrimSpace(raw)
if trimmed == "" {
return "", nil, nil
}
parsed, err = url.Parse(trimmed)
if err != nil {
// 不使用 %w 包装，避免 url.Parse 的底层错误消息泄漏原始 URL（可能含凭据）
return "", nil, fmt.Errorf("invalid proxy URL: %v", err)
}
if parsed.Host == "" || parsed.Hostname() == "" {
return "", nil, fmt.Errorf("proxy URL missing host: %s", parsed.Redacted())
}
scheme := strings.ToLower(parsed.Scheme)
if !allowedSchemes[scheme] {
return "", nil, fmt.Errorf("unsupported proxy scheme %q (allowed: http, https, socks5, socks5h)", scheme)
}
// 自动升级 socks5 → socks5h，确保 DNS 由代理端解析，防止 DNS 泄漏。
// Go 的 golang.org/x/net/proxy 对 socks5:// 默认在客户端本地解析 DNS，
// 仅 socks5h:// 才将域名发送给代理端做远程 DNS 解析。
if scheme == "socks5" {
parsed.Scheme = "socks5h"
trimmed = parsed.String()
}
return trimmed, parsed, nil
}

215
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/proxyurl/parse_test.go Normal file
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package proxyurl
import (
"strings"
"testing"
)
func TestParse_空字符串直连(t *testing.T) {
trimmed, parsed, err := Parse("")
if err != nil {
t.Fatalf("空字符串应直连: %v", err)
}
if trimmed != "" {
t.Errorf("trimmed 应为空: got %q", trimmed)
}
if parsed != nil {
t.Errorf("parsed 应为 nil: got %v", parsed)
}
}
func TestParse_空白字符串直连(t *testing.T) {
trimmed, parsed, err := Parse(" ")
if err != nil {
t.Fatalf("空白字符串应直连: %v", err)
}
if trimmed != "" {
t.Errorf("trimmed 应为空: got %q", trimmed)
}
if parsed != nil {
t.Errorf("parsed 应为 nil: got %v", parsed)
}
}
func TestParse_有效HTTP代理(t *testing.T) {
trimmed, parsed, err := Parse("http://proxy.example.com:8080")
if err != nil {
t.Fatalf("有效 HTTP 代理应成功: %v", err)
}
if trimmed != "http://proxy.example.com:8080" {
t.Errorf("trimmed 不匹配: got %q", trimmed)
}
if parsed == nil {
t.Fatal("parsed 不应为 nil")
}
if parsed.Host != "proxy.example.com:8080" {
t.Errorf("Host 不匹配: got %q", parsed.Host)
}
}
func TestParse_有效HTTPS代理(t *testing.T) {
_, parsed, err := Parse("https://proxy.example.com:443")
if err != nil {
t.Fatalf("有效 HTTPS 代理应成功: %v", err)
}
if parsed.Scheme != "https" {
t.Errorf("Scheme 不匹配: got %q", parsed.Scheme)
}
}
func TestParse_有效SOCKS5代理_自动升级为SOCKS5H(t *testing.T) {
trimmed, parsed, err := Parse("socks5://127.0.0.1:1080")
if err != nil {
t.Fatalf("有效 SOCKS5 代理应成功: %v", err)
}
// socks5 自动升级为 socks5h，确保 DNS 由代理端解析
if trimmed != "socks5h://127.0.0.1:1080" {
t.Errorf("trimmed 应升级为 socks5h: got %q", trimmed)
}
if parsed.Scheme != "socks5h" {
t.Errorf("Scheme 应升级为 socks5h: got %q", parsed.Scheme)
}
}
func TestParse_无效URL(t *testing.T) {
_, _, err := Parse("://invalid")
if err == nil {
t.Fatal("无效 URL 应返回错误")
}
if !strings.Contains(err.Error(), "invalid proxy URL") {
t.Errorf("错误信息应包含 'invalid proxy URL': got %s", err.Error())
}
}
func TestParse_缺少Host(t *testing.T) {
_, _, err := Parse("http://")
if err == nil {
t.Fatal("缺少 host 应返回错误")
}
if !strings.Contains(err.Error(), "missing host") {
t.Errorf("错误信息应包含 'missing host': got %s", err.Error())
}
}
func TestParse_不支持的Scheme(t *testing.T) {
_, _, err := Parse("ftp://proxy.example.com:21")
if err == nil {
t.Fatal("不支持的 scheme 应返回错误")
}
if !strings.Contains(err.Error(), "unsupported proxy scheme") {
t.Errorf("错误信息应包含 'unsupported proxy scheme': got %s", err.Error())
}
}
func TestParse_含密码URL脱敏(t *testing.T) {
// 场景 1: 带密码的 socks5 URL 应成功解析并升级为 socks5h
trimmed, parsed, err := Parse("socks5://user:secret_password@proxy.local:1080")
if err != nil {
t.Fatalf("含密码的有效 URL 应成功: %v", err)
}
if trimmed == "" || parsed == nil {
t.Fatal("应返回非空结果")
}
if parsed.Scheme != "socks5h" {
t.Errorf("Scheme 应升级为 socks5h: got %q", parsed.Scheme)
}
if !strings.HasPrefix(trimmed, "socks5h://") {
t.Errorf("trimmed 应以 socks5h:// 开头: got %q", trimmed)
}
if parsed.User == nil {
t.Error("升级后应保留 UserInfo")
}
// 场景 2: 带密码但缺少 host（触发 Redacted 脱敏路径）
_, _, err = Parse("http://user:secret_password@:0/")
if err == nil {
t.Fatal("缺少 host 应返回错误")
}
if strings.Contains(err.Error(), "secret_password") {
t.Error("错误信息不应包含明文密码")
}
if !strings.Contains(err.Error(), "missing host") {
t.Errorf("错误信息应包含 'missing host': got %s", err.Error())
}
}
func TestParse_带空白的有效URL(t *testing.T) {
trimmed, parsed, err := Parse(" http://proxy.example.com:8080 ")
if err != nil {
t.Fatalf("带空白的有效 URL 应成功: %v", err)
}
if trimmed != "http://proxy.example.com:8080" {
t.Errorf("trimmed 应去除空白: got %q", trimmed)
}
if parsed == nil {
t.Fatal("parsed 不应为 nil")
}
}
func TestParse_Scheme大小写不敏感(t *testing.T) {
// 大写 SOCKS5 应被接受并升级为 socks5h
trimmed, parsed, err := Parse("SOCKS5://proxy.example.com:1080")
if err != nil {
t.Fatalf("大写 SOCKS5 应被接受: %v", err)
}
if parsed.Scheme != "socks5h" {
t.Errorf("大写 SOCKS5 Scheme 应升级为 socks5h: got %q", parsed.Scheme)
}
if !strings.HasPrefix(trimmed, "socks5h://") {
t.Errorf("大写 SOCKS5 trimmed 应升级为 socks5h://: got %q", trimmed)
}
// 大写 HTTP 应被接受（不变）
_, _, err = Parse("HTTP://proxy.example.com:8080")
if err != nil {
t.Fatalf("大写 HTTP 应被接受: %v", err)
}
}
func TestParse_带认证的有效代理(t *testing.T) {
trimmed, parsed, err := Parse("http://user:pass@proxy.example.com:8080")
if err != nil {
t.Fatalf("带认证的代理 URL 应成功: %v", err)
}
if parsed.User == nil {
t.Error("应保留 UserInfo")
}
if trimmed != "http://user:pass@proxy.example.com:8080" {
t.Errorf("trimmed 不匹配: got %q", trimmed)
}
}
func TestParse_IPv6地址(t *testing.T) {
trimmed, parsed, err := Parse("http://[::1]:8080")
if err != nil {
t.Fatalf("IPv6 代理 URL 应成功: %v", err)
}
if parsed.Hostname() != "::1" {
t.Errorf("Hostname 不匹配: got %q", parsed.Hostname())
}
if trimmed != "http://[::1]:8080" {
t.Errorf("trimmed 不匹配: got %q", trimmed)
}
}
func TestParse_SOCKS5H保持不变(t *testing.T) {
trimmed, parsed, err := Parse("socks5h://proxy.local:1080")
if err != nil {
t.Fatalf("有效 SOCKS5H 代理应成功: %v", err)
}
// socks5h 不需要升级，应保持原样
if trimmed != "socks5h://proxy.local:1080" {
t.Errorf("trimmed 不应变化: got %q", trimmed)
}
if parsed.Scheme != "socks5h" {
t.Errorf("Scheme 应保持 socks5h: got %q", parsed.Scheme)
}
}
func TestParse_无Scheme裸地址(t *testing.T) {
// 无 scheme 的裸地址，Go url.Parse 将其视为 path，Host 为空
_, _, err := Parse("proxy.example.com:8080")
if err == nil {
t.Fatal("无 scheme 的裸地址应返回错误")
}
}

67
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/proxyutil/dialer.go Normal file
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// Package proxyutil 提供统一的代理配置功能
//
// 支持的代理协议：
// - HTTP/HTTPS: 通过 Transport.Proxy 设置
// - SOCKS5: 通过 Transport.DialContext 设置（客户端本地解析 DNS）
// - SOCKS5H: 通过 Transport.DialContext 设置（代理端远程解析 DNS，推荐）
//
// 注意：proxyurl.Parse() 会自动将 socks5:// 升级为 socks5h://，
// 确保 DNS 也由代理端解析，防止 DNS 泄漏。
package proxyutil
import (
"context"
"fmt"
"net"
"net/http"
"net/url"
"strings"
"golang.org/x/net/proxy"
)
// ConfigureTransportProxy 根据代理 URL 配置 Transport
//
// 支持的协议：
// - http/https: 设置 transport.Proxy
// - socks5: 设置 transport.DialContext（客户端本地解析 DNS）
// - socks5h: 设置 transport.DialContext（代理端远程解析 DNS，推荐）
//
// 参数：
// - transport: 需要配置的 http.Transport
// - proxyURL: 代理地址，nil 表示直连
//
// 返回：
// - error: 代理配置错误（协议不支持或 dialer 创建失败）
func ConfigureTransportProxy(transport *http.Transport, proxyURL *url.URL) error {
if proxyURL == nil {
return nil
}
scheme := strings.ToLower(proxyURL.Scheme)
switch scheme {
case "http", "https":
transport.Proxy = http.ProxyURL(proxyURL)
return nil
case "socks5", "socks5h":
dialer, err := proxy.FromURL(proxyURL, proxy.Direct)
if err != nil {
return fmt.Errorf("create socks5 dialer: %w", err)
}
// 优先使用支持 context 的 DialContext，以支持请求取消和超时
if contextDialer, ok := dialer.(proxy.ContextDialer); ok {
transport.DialContext = contextDialer.DialContext
} else {
// 回退路径：如果 dialer 不支持 ContextDialer，则包装为简单的 DialContext
// 注意：此回退不支持请求取消和超时控制
transport.DialContext = func(_ context.Context, network, addr string) (net.Conn, error) {
return dialer.Dial(network, addr)
}
}
return nil
default:
return fmt.Errorf("unsupported proxy scheme: %s", scheme)
}
}

204
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/proxyutil/dialer_test.go Normal file
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package proxyutil
import (
"net/http"
"net/url"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestConfigureTransportProxy_Nil(t *testing.T) {
transport := &http.Transport{}
err := ConfigureTransportProxy(transport, nil)
require.NoError(t, err)
assert.Nil(t, transport.Proxy, "nil proxy should not set Proxy")
assert.Nil(t, transport.DialContext, "nil proxy should not set DialContext")
}
func TestConfigureTransportProxy_HTTP(t *testing.T) {
transport := &http.Transport{}
proxyURL, _ := url.Parse("http://proxy.example.com:8080")
err := ConfigureTransportProxy(transport, proxyURL)
require.NoError(t, err)
assert.NotNil(t, transport.Proxy, "HTTP proxy should set Proxy")
assert.Nil(t, transport.DialContext, "HTTP proxy should not set DialContext")
}
func TestConfigureTransportProxy_HTTPS(t *testing.T) {
transport := &http.Transport{}
proxyURL, _ := url.Parse("https://secure-proxy.example.com:8443")
err := ConfigureTransportProxy(transport, proxyURL)
require.NoError(t, err)
assert.NotNil(t, transport.Proxy, "HTTPS proxy should set Proxy")
assert.Nil(t, transport.DialContext, "HTTPS proxy should not set DialContext")
}
func TestConfigureTransportProxy_SOCKS5(t *testing.T) {
transport := &http.Transport{}
proxyURL, _ := url.Parse("socks5://socks.example.com:1080")
err := ConfigureTransportProxy(transport, proxyURL)
require.NoError(t, err)
assert.Nil(t, transport.Proxy, "SOCKS5 proxy should not set Proxy")
assert.NotNil(t, transport.DialContext, "SOCKS5 proxy should set DialContext")
}
func TestConfigureTransportProxy_SOCKS5H(t *testing.T) {
transport := &http.Transport{}
proxyURL, _ := url.Parse("socks5h://socks.example.com:1080")
err := ConfigureTransportProxy(transport, proxyURL)
require.NoError(t, err)
assert.Nil(t, transport.Proxy, "SOCKS5H proxy should not set Proxy")
assert.NotNil(t, transport.DialContext, "SOCKS5H proxy should set DialContext")
}
func TestConfigureTransportProxy_CaseInsensitive(t *testing.T) {
testCases := []struct {
scheme string
useProxy bool // true = uses Transport.Proxy, false = uses DialContext
}{
{"HTTP://proxy.example.com:8080", true},
{"Http://proxy.example.com:8080", true},
{"HTTPS://proxy.example.com:8443", true},
{"Https://proxy.example.com:8443", true},
{"SOCKS5://socks.example.com:1080", false},
{"Socks5://socks.example.com:1080", false},
{"SOCKS5H://socks.example.com:1080", false},
{"Socks5h://socks.example.com:1080", false},
}
for _, tc := range testCases {
t.Run(tc.scheme, func(t *testing.T) {
transport := &http.Transport{}
proxyURL, _ := url.Parse(tc.scheme)
err := ConfigureTransportProxy(transport, proxyURL)
require.NoError(t, err)
if tc.useProxy {
assert.NotNil(t, transport.Proxy)
assert.Nil(t, transport.DialContext)
} else {
assert.Nil(t, transport.Proxy)
assert.NotNil(t, transport.DialContext)
}
})
}
}
func TestConfigureTransportProxy_Unsupported(t *testing.T) {
testCases := []string{
"ftp://ftp.example.com",
"file:///path/to/file",
"unknown://example.com",
}
for _, tc := range testCases {
t.Run(tc, func(t *testing.T) {
transport := &http.Transport{}
proxyURL, _ := url.Parse(tc)
err := ConfigureTransportProxy(transport, proxyURL)
require.Error(t, err)
assert.Contains(t, err.Error(), "unsupported proxy scheme")
})
}
}
func TestConfigureTransportProxy_WithAuth(t *testing.T) {
transport := &http.Transport{}
proxyURL, _ := url.Parse("socks5://user:password@socks.example.com:1080")
err := ConfigureTransportProxy(transport, proxyURL)
require.NoError(t, err)
assert.NotNil(t, transport.DialContext, "SOCKS5 with auth should set DialContext")
}
func TestConfigureTransportProxy_EmptyScheme(t *testing.T) {
transport := &http.Transport{}
// 空 scheme 的 URL
proxyURL := &url.URL{Host: "proxy.example.com:8080"}
err := ConfigureTransportProxy(transport, proxyURL)
require.Error(t, err)
assert.Contains(t, err.Error(), "unsupported proxy scheme")
}
func TestConfigureTransportProxy_PreservesExistingConfig(t *testing.T) {
// 验证代理配置不会覆盖 Transport 的其他配置
transport := &http.Transport{
MaxIdleConns: 100,
MaxIdleConnsPerHost: 10,
}
proxyURL, _ := url.Parse("socks5://socks.example.com:1080")
err := ConfigureTransportProxy(transport, proxyURL)
require.NoError(t, err)
assert.Equal(t, 100, transport.MaxIdleConns, "MaxIdleConns should be preserved")
assert.Equal(t, 10, transport.MaxIdleConnsPerHost, "MaxIdleConnsPerHost should be preserved")
assert.NotNil(t, transport.DialContext, "DialContext should be set")
}
func TestConfigureTransportProxy_IPv6(t *testing.T) {
testCases := []struct {
name string
proxyURL string
}{
{"SOCKS5H with IPv6 loopback", "socks5h://[::1]:1080"},
{"SOCKS5 with full IPv6", "socks5://[2001:db8::1]:1080"},
{"HTTP with IPv6", "http://[::1]:8080"},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
transport := &http.Transport{}
proxyURL, err := url.Parse(tc.proxyURL)
require.NoError(t, err, "URL should be parseable")
err = ConfigureTransportProxy(transport, proxyURL)
require.NoError(t, err)
})
}
}
func TestConfigureTransportProxy_SpecialCharsInPassword(t *testing.T) {
testCases := []struct {
name string
proxyURL string
}{
// 密码包含 @ 符号（URL 编码为 %40）
{"password with @", "socks5://user:p%40ssword@proxy.example.com:1080"},
// 密码包含 : 符号（URL 编码为 %3A）
{"password with :", "socks5://user:pass%3Aword@proxy.example.com:1080"},
// 密码包含 / 符号（URL 编码为 %2F）
{"password with /", "socks5://user:pass%2Fword@proxy.example.com:1080"},
// 复杂密码
{"complex password", "socks5h://admin:P%40ss%3Aw0rd%2F123@proxy.example.com:1080"},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
transport := &http.Transport{}
proxyURL, err := url.Parse(tc.proxyURL)
require.NoError(t, err, "URL should be parseable")
err = ConfigureTransportProxy(transport, proxyURL)
require.NoError(t, err)
assert.NotNil(t, transport.DialContext, "SOCKS5 should set DialContext")
})
}
}

194
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/response/response.go Normal file
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// Package response provides standardized HTTP response helpers.
package response
import (
"log"
"math"
"net/http"
infraerrors "github.com/Wei-Shaw/sub2api/internal/pkg/errors"
"github.com/Wei-Shaw/sub2api/internal/util/logredact"
"github.com/gin-gonic/gin"
)
// Response 标准API响应格式
type Response struct {
Code int `json:"code"`
Message string `json:"message"`
Reason string `json:"reason,omitempty"`
Metadata map[string]string `json:"metadata,omitempty"`
Data any `json:"data,omitempty"`
}
// PaginatedData 分页数据格式（匹配前端期望）
type PaginatedData struct {
Items any `json:"items"`
Total int64 `json:"total"`
Page int `json:"page"`
PageSize int `json:"page_size"`
Pages int `json:"pages"`
}
// Success 返回成功响应
func Success(c *gin.Context, data any) {
c.JSON(http.StatusOK, Response{
Code: 0,
Message: "success",
Data: data,
})
}
// Created 返回创建成功响应
func Created(c *gin.Context, data any) {
c.JSON(http.StatusCreated, Response{
Code: 0,
Message: "success",
Data: data,
})
}
// Error 返回错误响应
func Error(c *gin.Context, statusCode int, message string) {
c.JSON(statusCode, Response{
Code: statusCode,
Message: message,
Reason: "",
Metadata: nil,
})
}
// ErrorWithDetails returns an error response compatible with the existing envelope while
// optionally providing structured error fields (reason/metadata).
func ErrorWithDetails(c *gin.Context, statusCode int, message, reason string, metadata map[string]string) {
c.JSON(statusCode, Response{
Code: statusCode,
Message: message,
Reason: reason,
Metadata: metadata,
})
}
// ErrorFrom converts an ApplicationError (or any error) into the envelope-compatible error response.
// It returns true if an error was written.
func ErrorFrom(c *gin.Context, err error) bool {
if err == nil {
return false
}
statusCode, status := infraerrors.ToHTTP(err)
// Log internal errors with full details for debugging
if statusCode >= 500 && c.Request != nil {
log.Printf("[ERROR] %s %s\n Error: %s", c.Request.Method, c.Request.URL.Path, logredact.RedactText(err.Error()))
}
ErrorWithDetails(c, statusCode, status.Message, status.Reason, status.Metadata)
return true
}
// BadRequest 返回400错误
func BadRequest(c *gin.Context, message string) {
Error(c, http.StatusBadRequest, message)
}
// Unauthorized 返回401错误
func Unauthorized(c *gin.Context, message string) {
Error(c, http.StatusUnauthorized, message)
}
// Forbidden 返回403错误
func Forbidden(c *gin.Context, message string) {
Error(c, http.StatusForbidden, message)
}
// NotFound 返回404错误
func NotFound(c *gin.Context, message string) {
Error(c, http.StatusNotFound, message)
}
// InternalError 返回500错误
func InternalError(c *gin.Context, message string) {
Error(c, http.StatusInternalServerError, message)
}
// Paginated 返回分页数据
func Paginated(c *gin.Context, items any, total int64, page, pageSize int) {
pages := int(math.Ceil(float64(total) / float64(pageSize)))
if pages < 1 {
pages = 1
}
Success(c, PaginatedData{
Items: items,
Total: total,
Page: page,
PageSize: pageSize,
Pages: pages,
})
}
// PaginationResult 分页结果（与pagination.PaginationResult兼容）
type PaginationResult struct {
Total int64
Page int
PageSize int
Pages int
}
// PaginatedWithResult 使用PaginationResult返回分页数据
func PaginatedWithResult(c *gin.Context, items any, pagination *PaginationResult) {
if pagination == nil {
Success(c, PaginatedData{
Items: items,
Total: 0,
Page: 1,
PageSize: 20,
Pages: 1,
})
return
}
Success(c, PaginatedData{
Items: items,
Total: pagination.Total,
Page: pagination.Page,
PageSize: pagination.PageSize,
Pages: pagination.Pages,
})
}
// ParsePagination 解析分页参数
func ParsePagination(c *gin.Context) (page, pageSize int) {
page = 1
pageSize = 20
if p := c.Query("page"); p != "" {
if val, err := parseInt(p); err == nil && val > 0 {
page = val
}
}
// 支持 page_size 和 limit 两种参数名
if ps := c.Query("page_size"); ps != "" {
if val, err := parseInt(ps); err == nil && val > 0 && val <= 1000 {
pageSize = val
}
} else if l := c.Query("limit"); l != "" {
if val, err := parseInt(l); err == nil && val > 0 && val <= 1000 {
pageSize = val
}
}
return page, pageSize
}
func parseInt(s string) (int, error) {
var result int
for _, c := range s {
if c < '0' || c > '9' {
return 0, nil
}
result = result*10 + int(c-'0')
}
return result, nil
}

788
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/response/response_test.go Normal file
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//go:build unit
package response
import (
"encoding/json"
"errors"
"net/http"
"net/http/httptest"
"testing"
errors2 "github.com/Wei-Shaw/sub2api/internal/pkg/errors"
"github.com/gin-gonic/gin"
"github.com/stretchr/testify/require"
)
// ---------- 辅助函数 ----------
// parseResponseBody 从 httptest.ResponseRecorder 中解析 JSON 响应体
func parseResponseBody(t *testing.T, w *httptest.ResponseRecorder) Response {
t.Helper()
var got Response
require.NoError(t, json.Unmarshal(w.Body.Bytes(), &got))
return got
}
// parsePaginatedBody 从响应体中解析分页数据（Data 字段是 PaginatedData）
func parsePaginatedBody(t *testing.T, w *httptest.ResponseRecorder) (Response, PaginatedData) {
t.Helper()
// 先用 raw json 解析，因为 Data 是 any 类型
var raw struct {
Code int `json:"code"`
Message string `json:"message"`
Reason string `json:"reason,omitempty"`
Data json.RawMessage `json:"data,omitempty"`
}
require.NoError(t, json.Unmarshal(w.Body.Bytes(), &raw))
var pd PaginatedData
require.NoError(t, json.Unmarshal(raw.Data, &pd))
return Response{Code: raw.Code, Message: raw.Message, Reason: raw.Reason}, pd
}
// newContextWithQuery 创建一个带有 URL query 参数的 gin.Context 用于测试 ParsePagination
func newContextWithQuery(query string) (*httptest.ResponseRecorder, *gin.Context) {
w := httptest.NewRecorder()
c, _ := gin.CreateTestContext(w)
c.Request = httptest.NewRequest(http.MethodGet, "/?"+query, nil)
return w, c
}
// ---------- 现有测试 ----------
func TestErrorWithDetails(t *testing.T) {
gin.SetMode(gin.TestMode)
tests := []struct {
name string
statusCode int
message string
reason string
metadata map[string]string
want Response
}{
{
name: "plain_error",
statusCode: http.StatusBadRequest,
message: "invalid request",
want: Response{
Code: http.StatusBadRequest,
Message: "invalid request",
},
},
{
name: "structured_error",
statusCode: http.StatusForbidden,
message: "no access",
reason: "FORBIDDEN",
metadata: map[string]string{"k": "v"},
want: Response{
Code: http.StatusForbidden,
Message: "no access",
Reason: "FORBIDDEN",
Metadata: map[string]string{"k": "v"},
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
w := httptest.NewRecorder()
c, _ := gin.CreateTestContext(w)
ErrorWithDetails(c, tt.statusCode, tt.message, tt.reason, tt.metadata)
require.Equal(t, tt.statusCode, w.Code)
var got Response
require.NoError(t, json.Unmarshal(w.Body.Bytes(), &got))
require.Equal(t, tt.want, got)
})
}
}
func TestErrorFrom(t *testing.T) {
gin.SetMode(gin.TestMode)
tests := []struct {
name string
err error
wantWritten bool
wantHTTPCode int
wantBody Response
}{
{
name: "nil_error",
err: nil,
wantWritten: false,
},
{
name: "application_error",
err: errors2.Forbidden("FORBIDDEN", "no access").WithMetadata(map[string]string{"scope": "admin"}),
wantWritten: true,
wantHTTPCode: http.StatusForbidden,
wantBody: Response{
Code: http.StatusForbidden,
Message: "no access",
Reason: "FORBIDDEN",
Metadata: map[string]string{"scope": "admin"},
},
},
{
name: "bad_request_error",
err: errors2.BadRequest("INVALID_REQUEST", "invalid request"),
wantWritten: true,
wantHTTPCode: http.StatusBadRequest,
wantBody: Response{
Code: http.StatusBadRequest,
Message: "invalid request",
Reason: "INVALID_REQUEST",
},
},
{
name: "unauthorized_error",
err: errors2.Unauthorized("UNAUTHORIZED", "unauthorized"),
wantWritten: true,
wantHTTPCode: http.StatusUnauthorized,
wantBody: Response{
Code: http.StatusUnauthorized,
Message: "unauthorized",
Reason: "UNAUTHORIZED",
},
},
{
name: "not_found_error",
err: errors2.NotFound("NOT_FOUND", "not found"),
wantWritten: true,
wantHTTPCode: http.StatusNotFound,
wantBody: Response{
Code: http.StatusNotFound,
Message: "not found",
Reason: "NOT_FOUND",
},
},
{
name: "conflict_error",
err: errors2.Conflict("CONFLICT", "conflict"),
wantWritten: true,
wantHTTPCode: http.StatusConflict,
wantBody: Response{
Code: http.StatusConflict,
Message: "conflict",
Reason: "CONFLICT",
},
},
{
name: "unknown_error_defaults_to_500",
err: errors.New("boom"),
wantWritten: true,
wantHTTPCode: http.StatusInternalServerError,
wantBody: Response{
Code: http.StatusInternalServerError,
Message: errors2.UnknownMessage,
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
w := httptest.NewRecorder()
c, _ := gin.CreateTestContext(w)
written := ErrorFrom(c, tt.err)
require.Equal(t, tt.wantWritten, written)
if !tt.wantWritten {
require.Equal(t, 200, w.Code)
require.Empty(t, w.Body.String())
return
}
require.Equal(t, tt.wantHTTPCode, w.Code)
var got Response
require.NoError(t, json.Unmarshal(w.Body.Bytes(), &got))
require.Equal(t, tt.wantBody, got)
})
}
}
// ---------- 新增测试 ----------
func TestSuccess(t *testing.T) {
gin.SetMode(gin.TestMode)
tests := []struct {
name string
data any
wantCode int
wantBody Response
}{
{
name: "返回字符串数据",
data: "hello",
wantCode: http.StatusOK,
wantBody: Response{Code: 0, Message: "success", Data: "hello"},
},
{
name: "返回nil数据",
data: nil,
wantCode: http.StatusOK,
wantBody: Response{Code: 0, Message: "success"},
},
{
name: "返回map数据",
data: map[string]string{"key": "value"},
wantCode: http.StatusOK,
wantBody: Response{Code: 0, Message: "success"},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
w := httptest.NewRecorder()
c, _ := gin.CreateTestContext(w)
Success(c, tt.data)
require.Equal(t, tt.wantCode, w.Code)
// 只验证 code 和 message，data 字段类型在 JSON 反序列化时会变成 map/slice
got := parseResponseBody(t, w)
require.Equal(t, 0, got.Code)
require.Equal(t, "success", got.Message)
if tt.data == nil {
require.Nil(t, got.Data)
} else {
require.NotNil(t, got.Data)
}
})
}
}
func TestCreated(t *testing.T) {
gin.SetMode(gin.TestMode)
tests := []struct {
name string
data any
wantCode int
}{
{
name: "创建成功_返回数据",
data: map[string]int{"id": 42},
wantCode: http.StatusCreated,
},
{
name: "创建成功_nil数据",
data: nil,
wantCode: http.StatusCreated,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
w := httptest.NewRecorder()
c, _ := gin.CreateTestContext(w)
Created(c, tt.data)
require.Equal(t, tt.wantCode, w.Code)
got := parseResponseBody(t, w)
require.Equal(t, 0, got.Code)
require.Equal(t, "success", got.Message)
})
}
}
func TestError(t *testing.T) {
gin.SetMode(gin.TestMode)
tests := []struct {
name string
statusCode int
message string
}{
{
name: "400错误",
statusCode: http.StatusBadRequest,
message: "bad request",
},
{
name: "500错误",
statusCode: http.StatusInternalServerError,
message: "internal error",
},
{
name: "自定义状态码",
statusCode: 418,
message: "I'm a teapot",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
w := httptest.NewRecorder()
c, _ := gin.CreateTestContext(w)
Error(c, tt.statusCode, tt.message)
require.Equal(t, tt.statusCode, w.Code)
got := parseResponseBody(t, w)
require.Equal(t, tt.statusCode, got.Code)
require.Equal(t, tt.message, got.Message)
require.Empty(t, got.Reason)
require.Nil(t, got.Metadata)
require.Nil(t, got.Data)
})
}
}
func TestBadRequest(t *testing.T) {
gin.SetMode(gin.TestMode)
w := httptest.NewRecorder()
c, _ := gin.CreateTestContext(w)
BadRequest(c, "参数无效")
require.Equal(t, http.StatusBadRequest, w.Code)
got := parseResponseBody(t, w)
require.Equal(t, http.StatusBadRequest, got.Code)
require.Equal(t, "参数无效", got.Message)
}
func TestUnauthorized(t *testing.T) {
gin.SetMode(gin.TestMode)
w := httptest.NewRecorder()
c, _ := gin.CreateTestContext(w)
Unauthorized(c, "未登录")
require.Equal(t, http.StatusUnauthorized, w.Code)
got := parseResponseBody(t, w)
require.Equal(t, http.StatusUnauthorized, got.Code)
require.Equal(t, "未登录", got.Message)
}
func TestForbidden(t *testing.T) {
gin.SetMode(gin.TestMode)
w := httptest.NewRecorder()
c, _ := gin.CreateTestContext(w)
Forbidden(c, "无权限")
require.Equal(t, http.StatusForbidden, w.Code)
got := parseResponseBody(t, w)
require.Equal(t, http.StatusForbidden, got.Code)
require.Equal(t, "无权限", got.Message)
}
func TestNotFound(t *testing.T) {
gin.SetMode(gin.TestMode)
w := httptest.NewRecorder()
c, _ := gin.CreateTestContext(w)
NotFound(c, "资源不存在")
require.Equal(t, http.StatusNotFound, w.Code)
got := parseResponseBody(t, w)
require.Equal(t, http.StatusNotFound, got.Code)
require.Equal(t, "资源不存在", got.Message)
}
func TestInternalError(t *testing.T) {
gin.SetMode(gin.TestMode)
w := httptest.NewRecorder()
c, _ := gin.CreateTestContext(w)
InternalError(c, "服务器内部错误")
require.Equal(t, http.StatusInternalServerError, w.Code)
got := parseResponseBody(t, w)
require.Equal(t, http.StatusInternalServerError, got.Code)
require.Equal(t, "服务器内部错误", got.Message)
}
func TestPaginated(t *testing.T) {
gin.SetMode(gin.TestMode)
tests := []struct {
name string
items any
total int64
page int
pageSize int
wantPages int
wantTotal int64
wantPage int
wantPageSize int
}{
{
name: "标准分页_多页",
items: []string{"a", "b"},
total: 25,
page: 1,
pageSize: 10,
wantPages: 3,
wantTotal: 25,
wantPage: 1,
wantPageSize: 10,
},
{
name: "总数刚好整除",
items: []string{"a"},
total: 20,
page: 2,
pageSize: 10,
wantPages: 2,
wantTotal: 20,
wantPage: 2,
wantPageSize: 10,
},
{
name: "总数为0_pages至少为1",
items: []string{},
total: 0,
page: 1,
pageSize: 10,
wantPages: 1,
wantTotal: 0,
wantPage: 1,
wantPageSize: 10,
},
{
name: "单页数据",
items: []int{1, 2, 3},
total: 3,
page: 1,
pageSize: 20,
wantPages: 1,
wantTotal: 3,
wantPage: 1,
wantPageSize: 20,
},
{
name: "总数为1",
items: []string{"only"},
total: 1,
page: 1,
pageSize: 10,
wantPages: 1,
wantTotal: 1,
wantPage: 1,
wantPageSize: 10,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
w := httptest.NewRecorder()
c, _ := gin.CreateTestContext(w)
Paginated(c, tt.items, tt.total, tt.page, tt.pageSize)
require.Equal(t, http.StatusOK, w.Code)
resp, pd := parsePaginatedBody(t, w)
require.Equal(t, 0, resp.Code)
require.Equal(t, "success", resp.Message)
require.Equal(t, tt.wantTotal, pd.Total)
require.Equal(t, tt.wantPage, pd.Page)
require.Equal(t, tt.wantPageSize, pd.PageSize)
require.Equal(t, tt.wantPages, pd.Pages)
})
}
}
func TestPaginatedWithResult(t *testing.T) {
gin.SetMode(gin.TestMode)
tests := []struct {
name string
items any
pagination *PaginationResult
wantTotal int64
wantPage int
wantPageSize int
wantPages int
}{
{
name: "正常分页结果",
items: []string{"a", "b"},
pagination: &PaginationResult{
Total: 50,
Page: 3,
PageSize: 10,
Pages: 5,
},
wantTotal: 50,
wantPage: 3,
wantPageSize: 10,
wantPages: 5,
},
{
name: "pagination为nil_使用默认值",
items: []string{},
pagination: nil,
wantTotal: 0,
wantPage: 1,
wantPageSize: 20,
wantPages: 1,
},
{
name: "单页结果",
items: []int{1},
pagination: &PaginationResult{
Total: 1,
Page: 1,
PageSize: 20,
Pages: 1,
},
wantTotal: 1,
wantPage: 1,
wantPageSize: 20,
wantPages: 1,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
w := httptest.NewRecorder()
c, _ := gin.CreateTestContext(w)
PaginatedWithResult(c, tt.items, tt.pagination)
require.Equal(t, http.StatusOK, w.Code)
resp, pd := parsePaginatedBody(t, w)
require.Equal(t, 0, resp.Code)
require.Equal(t, "success", resp.Message)
require.Equal(t, tt.wantTotal, pd.Total)
require.Equal(t, tt.wantPage, pd.Page)
require.Equal(t, tt.wantPageSize, pd.PageSize)
require.Equal(t, tt.wantPages, pd.Pages)
})
}
}
func TestParsePagination(t *testing.T) {
gin.SetMode(gin.TestMode)
tests := []struct {
name string
query string
wantPage int
wantPageSize int
}{
{
name: "无参数_使用默认值",
query: "",
wantPage: 1,
wantPageSize: 20,
},
{
name: "仅指定page",
query: "page=3",
wantPage: 3,
wantPageSize: 20,
},
{
name: "仅指定page_size",
query: "page_size=50",
wantPage: 1,
wantPageSize: 50,
},
{
name: "同时指定page和page_size",
query: "page=2&page_size=30",
wantPage: 2,
wantPageSize: 30,
},
{
name: "使用limit代替page_size",
query: "limit=15",
wantPage: 1,
wantPageSize: 15,
},
{
name: "page_size优先于limit",
query: "page_size=25&limit=50",
wantPage: 1,
wantPageSize: 25,
},
{
name: "page为0_使用默认值",
query: "page=0",
wantPage: 1,
wantPageSize: 20,
},
{
name: "page_size超过1000_使用默认值",
query: "page_size=1001",
wantPage: 1,
wantPageSize: 20,
},
{
name: "page_size恰好1000_有效",
query: "page_size=1000",
wantPage: 1,
wantPageSize: 1000,
},
{
name: "page为非数字_使用默认值",
query: "page=abc",
wantPage: 1,
wantPageSize: 20,
},
{
name: "page_size为非数字_使用默认值",
query: "page_size=xyz",
wantPage: 1,
wantPageSize: 20,
},
{
name: "limit为非数字_使用默认值",
query: "limit=abc",
wantPage: 1,
wantPageSize: 20,
},
{
name: "page_size为0_使用默认值",
query: "page_size=0",
wantPage: 1,
wantPageSize: 20,
},
{
name: "limit为0_使用默认值",
query: "limit=0",
wantPage: 1,
wantPageSize: 20,
},
{
name: "大页码",
query: "page=999&page_size=100",
wantPage: 999,
wantPageSize: 100,
},
{
name: "page_size为1_最小有效值",
query: "page_size=1",
wantPage: 1,
wantPageSize: 1,
},
{
name: "混合数字和字母的page",
query: "page=12a",
wantPage: 1,
wantPageSize: 20,
},
{
name: "limit超过1000_使用默认值",
query: "limit=2000",
wantPage: 1,
wantPageSize: 20,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
_, c := newContextWithQuery(tt.query)
page, pageSize := ParsePagination(c)
require.Equal(t, tt.wantPage, page, "page 不符合预期")
require.Equal(t, tt.wantPageSize, pageSize, "pageSize 不符合预期")
})
}
}
func Test_parseInt(t *testing.T) {
tests := []struct {
name string
input string
wantVal int
wantErr bool
}{
{
name: "正常数字",
input: "123",
wantVal: 123,
wantErr: false,
},
{
name: "零",
input: "0",
wantVal: 0,
wantErr: false,
},
{
name: "单个数字",
input: "5",
wantVal: 5,
wantErr: false,
},
{
name: "大数字",
input: "99999",
wantVal: 99999,
wantErr: false,
},
{
name: "包含字母_返回0",
input: "abc",
wantVal: 0,
wantErr: false,
},
{
name: "数字开头接字母_返回0",
input: "12a",
wantVal: 0,
wantErr: false,
},
{
name: "包含负号_返回0",
input: "-1",
wantVal: 0,
wantErr: false,
},
{
name: "包含小数点_返回0",
input: "1.5",
wantVal: 0,
wantErr: false,
},
{
name: "包含空格_返回0",
input: "1 2",
wantVal: 0,
wantErr: false,
},
{
name: "空字符串",
input: "",
wantVal: 0,
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
val, err := parseInt(tt.input)
if tt.wantErr {
require.Error(t, err)
} else {
require.NoError(t, err)
}
require.Equal(t, tt.wantVal, val)
})
}
}

48
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/sysutil/restart.go Normal file
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// Package sysutil provides system-level utilities for process management.
package sysutil
import (
"log"
"os"
"runtime"
"time"
)
// RestartService triggers a service restart by gracefully exiting.
//
// This relies on systemd's Restart=always configuration to automatically
// restart the service after it exits. This is the industry-standard approach:
// - Simple and reliable
// - No sudo permissions needed
// - No complex process management
// - Leverages systemd's native restart capability
//
// Prerequisites:
// - Linux OS with systemd
// - Service configured with Restart=always in systemd unit file
func RestartService() error {
if runtime.GOOS != "linux" {
log.Println("Service restart via exit only works on Linux with systemd")
return nil
}
log.Println("Initiating service restart by graceful exit...")
log.Println("systemd will automatically restart the service (Restart=always)")
// Give a moment for logs to flush and response to be sent
go func() {
time.Sleep(100 * time.Millisecond)
os.Exit(0)
}()
return nil
}
// RestartServiceAsync is a fire-and-forget version of RestartService.
// It logs errors instead of returning them, suitable for goroutine usage.
func RestartServiceAsync() {
if err := RestartService(); err != nil {
log.Printf("Service restart failed: %v", err)
log.Println("Please restart the service manually: sudo systemctl restart sub2api")
}
}

161
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/timezone/timezone.go Normal file
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// Package timezone provides global timezone management for the application.
// Similar to PHP's date_default_timezone_set, this package allows setting
// a global timezone that affects all time.Now() calls.
package timezone
import (
"fmt"
"log"
"time"
)
var (
// location is the global timezone location
location *time.Location
// tzName stores the timezone name for logging/debugging
tzName string
)
// Init initializes the global timezone setting.
// This should be called once at application startup.
// Example timezone values: "Asia/Shanghai", "America/New_York", "UTC"
func Init(tz string) error {
if tz == "" {
tz = "Asia/Shanghai" // Default timezone
}
loc, err := time.LoadLocation(tz)
if err != nil {
return fmt.Errorf("invalid timezone %q: %w", tz, err)
}
// Set the global Go time.Local to our timezone
// This affects time.Now() throughout the application
time.Local = loc
location = loc
tzName = tz
log.Printf("Timezone initialized: %s (UTC offset: %s)", tz, getUTCOffset(loc))
return nil
}
// getUTCOffset returns the current UTC offset for a location
func getUTCOffset(loc *time.Location) string {
_, offset := time.Now().In(loc).Zone()
hours := offset / 3600
minutes := (offset % 3600) / 60
if minutes < 0 {
minutes = -minutes
}
sign := "+"
if hours < 0 {
sign = "-"
hours = -hours
}
return fmt.Sprintf("%s%02d:%02d", sign, hours, minutes)
}
// Now returns the current time in the configured timezone.
// This is equivalent to time.Now() after Init() is called,
// but provided for explicit timezone-aware code.
func Now() time.Time {
if location == nil {
return time.Now()
}
return time.Now().In(location)
}
// Location returns the configured timezone location.
func Location() *time.Location {
if location == nil {
return time.Local
}
return location
}
// Name returns the configured timezone name.
func Name() string {
if tzName == "" {
return "Local"
}
return tzName
}
// StartOfDay returns the start of the given day (00:00:00) in the configured timezone.
func StartOfDay(t time.Time) time.Time {
loc := Location()
t = t.In(loc)
return time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, loc)
}
// Today returns the start of today (00:00:00) in the configured timezone.
func Today() time.Time {
return StartOfDay(Now())
}
// EndOfDay returns the end of the given day (23:59:59.999999999) in the configured timezone.
func EndOfDay(t time.Time) time.Time {
loc := Location()
t = t.In(loc)
return time.Date(t.Year(), t.Month(), t.Day(), 23, 59, 59, 999999999, loc)
}
// StartOfWeek returns the start of the week (Monday 00:00:00) for the given time.
func StartOfWeek(t time.Time) time.Time {
loc := Location()
t = t.In(loc)
weekday := int(t.Weekday())
if weekday == 0 {
weekday = 7 // Sunday is day 7
}
return time.Date(t.Year(), t.Month(), t.Day()-weekday+1, 0, 0, 0, 0, loc)
}
// StartOfMonth returns the start of the month (1st day 00:00:00) for the given time.
func StartOfMonth(t time.Time) time.Time {
loc := Location()
t = t.In(loc)
return time.Date(t.Year(), t.Month(), 1, 0, 0, 0, 0, loc)
}
// ParseInLocation parses a time string in the configured timezone.
func ParseInLocation(layout, value string) (time.Time, error) {
return time.ParseInLocation(layout, value, Location())
}
// ParseInUserLocation parses a time string in the user's timezone.
// If userTZ is empty or invalid, falls back to the configured server timezone.
func ParseInUserLocation(layout, value, userTZ string) (time.Time, error) {
loc := Location() // default to server timezone
if userTZ != "" {
if userLoc, err := time.LoadLocation(userTZ); err == nil {
loc = userLoc
}
}
return time.ParseInLocation(layout, value, loc)
}
// NowInUserLocation returns the current time in the user's timezone.
// If userTZ is empty or invalid, falls back to the configured server timezone.
func NowInUserLocation(userTZ string) time.Time {
if userTZ == "" {
return Now()
}
if userLoc, err := time.LoadLocation(userTZ); err == nil {
return time.Now().In(userLoc)
}
return Now()
}
// StartOfDayInUserLocation returns the start of the given day in the user's timezone.
// If userTZ is empty or invalid, falls back to the configured server timezone.
func StartOfDayInUserLocation(t time.Time, userTZ string) time.Time {
loc := Location()
if userTZ != "" {
if userLoc, err := time.LoadLocation(userTZ); err == nil {
loc = userLoc
}
}
t = t.In(loc)
return time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, loc)
}

137
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/timezone/timezone_test.go Normal file
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package timezone
import (
"testing"
"time"
)
func TestInit(t *testing.T) {
// Test with valid timezone
err := Init("Asia/Shanghai")
if err != nil {
t.Fatalf("Init failed with valid timezone: %v", err)
}
// Verify time.Local was set
if time.Local.String() != "Asia/Shanghai" {
t.Errorf("time.Local not set correctly, got %s", time.Local.String())
}
// Verify our location variable
if Location().String() != "Asia/Shanghai" {
t.Errorf("Location() not set correctly, got %s", Location().String())
}
// Test Name()
if Name() != "Asia/Shanghai" {
t.Errorf("Name() not set correctly, got %s", Name())
}
}
func TestInitInvalidTimezone(t *testing.T) {
err := Init("Invalid/Timezone")
if err == nil {
t.Error("Init should fail with invalid timezone")
}
}
func TestTimeNowAffected(t *testing.T) {
// Reset to UTC first
if err := Init("UTC"); err != nil {
t.Fatalf("Init failed with UTC: %v", err)
}
utcNow := time.Now()
// Switch to Shanghai (UTC+8)
if err := Init("Asia/Shanghai"); err != nil {
t.Fatalf("Init failed with Asia/Shanghai: %v", err)
}
shanghaiNow := time.Now()
// The times should be the same instant, but different timezone representation
// Shanghai should be 8 hours ahead in display
_, utcOffset := utcNow.Zone()
_, shanghaiOffset := shanghaiNow.Zone()
expectedDiff := 8 * 3600 // 8 hours in seconds
actualDiff := shanghaiOffset - utcOffset
if actualDiff != expectedDiff {
t.Errorf("Timezone offset difference incorrect: expected %d, got %d", expectedDiff, actualDiff)
}
}
func TestToday(t *testing.T) {
if err := Init("Asia/Shanghai"); err != nil {
t.Fatalf("Init failed with Asia/Shanghai: %v", err)
}
today := Today()
now := Now()
// Today should be at 00:00:00
if today.Hour() != 0 || today.Minute() != 0 || today.Second() != 0 {
t.Errorf("Today() not at start of day: %v", today)
}
// Today should be same date as now
if today.Year() != now.Year() || today.Month() != now.Month() || today.Day() != now.Day() {
t.Errorf("Today() date mismatch: today=%v, now=%v", today, now)
}
}
func TestStartOfDay(t *testing.T) {
if err := Init("Asia/Shanghai"); err != nil {
t.Fatalf("Init failed with Asia/Shanghai: %v", err)
}
// Create a time at 15:30:45
testTime := time.Date(2024, 6, 15, 15, 30, 45, 123456789, Location())
startOfDay := StartOfDay(testTime)
expected := time.Date(2024, 6, 15, 0, 0, 0, 0, Location())
if !startOfDay.Equal(expected) {
t.Errorf("StartOfDay incorrect: expected %v, got %v", expected, startOfDay)
}
}
func TestTruncateVsStartOfDay(t *testing.T) {
// This test demonstrates why Truncate(24*time.Hour) can be problematic
// and why StartOfDay is more reliable for timezone-aware code
if err := Init("Asia/Shanghai"); err != nil {
t.Fatalf("Init failed with Asia/Shanghai: %v", err)
}
now := Now()
// Truncate operates on UTC, not local time
truncated := now.Truncate(24 * time.Hour)
// StartOfDay operates on local time
startOfDay := StartOfDay(now)
// These will likely be different for non-UTC timezones
t.Logf("Now: %v", now)
t.Logf("Truncate(24h): %v", truncated)
t.Logf("StartOfDay: %v", startOfDay)
// The truncated time may not be at local midnight
// StartOfDay is always at local midnight
if startOfDay.Hour() != 0 {
t.Errorf("StartOfDay should be at hour 0, got %d", startOfDay.Hour())
}
}
func TestDSTAwareness(t *testing.T) {
// Test with a timezone that has DST (America/New_York)
err := Init("America/New_York")
if err != nil {
t.Skipf("America/New_York timezone not available: %v", err)
}
// Just verify it doesn't crash
_ = Today()
_ = Now()
_ = StartOfDay(Now())
}

568
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/tlsfingerprint/dialer.go Normal file
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// Package tlsfingerprint provides TLS fingerprint simulation for HTTP clients.
// It uses the utls library to create TLS connections that mimic Node.js/Claude Code clients.
package tlsfingerprint
import (
"bufio"
"context"
"encoding/base64"
"fmt"
"log/slog"
"net"
"net/http"
"net/url"
utls "github.com/refraction-networking/utls"
"golang.org/x/net/proxy"
)
// Profile contains TLS fingerprint configuration.
type Profile struct {
Name string // Profile name for identification
CipherSuites []uint16
Curves []uint16
PointFormats []uint8
EnableGREASE bool
}
// Dialer creates TLS connections with custom fingerprints.
type Dialer struct {
profile *Profile
baseDialer func(ctx context.Context, network, addr string) (net.Conn, error)
}
// HTTPProxyDialer creates TLS connections through HTTP/HTTPS proxies with custom fingerprints.
// It handles the CONNECT tunnel establishment before performing TLS handshake.
type HTTPProxyDialer struct {
profile *Profile
proxyURL *url.URL
}
// SOCKS5ProxyDialer creates TLS connections through SOCKS5 proxies with custom fingerprints.
// It uses golang.org/x/net/proxy to establish the SOCKS5 tunnel.
type SOCKS5ProxyDialer struct {
profile *Profile
proxyURL *url.URL
}
// Default TLS fingerprint values captured from Claude CLI 2.x (Node.js 20.x + OpenSSL 3.x)
// Captured using: tshark -i lo -f "tcp port 8443" -Y "tls.handshake.type == 1" -V
// JA3 Hash: 1a28e69016765d92e3b381168d68922c
//
// Note: JA3/JA4 may have slight variations due to:
// - Session ticket presence/absence
// - Extension negotiation state
var (
// defaultCipherSuites contains all 59 cipher suites from Claude CLI
// Order is critical for JA3 fingerprint matching
defaultCipherSuites = []uint16{
// TLS 1.3 cipher suites (MUST be first)
0x1302, // TLS_AES_256_GCM_SHA384
0x1303, // TLS_CHACHA20_POLY1305_SHA256
0x1301, // TLS_AES_128_GCM_SHA256
// ECDHE + AES-GCM
0xc02f, // TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
0xc02b, // TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
0xc030, // TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
0xc02c, // TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
// DHE + AES-GCM
0x009e, // TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
// ECDHE/DHE + AES-CBC-SHA256/384
0xc027, // TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
0x0067, // TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
0xc028, // TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
0x006b, // TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
// DHE-DSS/RSA + AES-GCM
0x00a3, // TLS_DHE_DSS_WITH_AES_256_GCM_SHA384
0x009f, // TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
// ChaCha20-Poly1305
0xcca9, // TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
0xcca8, // TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
0xccaa, // TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
// AES-CCM (256-bit)
0xc0af, // TLS_ECDHE_ECDSA_WITH_AES_256_CCM_8
0xc0ad, // TLS_ECDHE_ECDSA_WITH_AES_256_CCM
0xc0a3, // TLS_DHE_RSA_WITH_AES_256_CCM_8
0xc09f, // TLS_DHE_RSA_WITH_AES_256_CCM
// ARIA (256-bit)
0xc05d, // TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384
0xc061, // TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384
0xc057, // TLS_DHE_DSS_WITH_ARIA_256_GCM_SHA384
0xc053, // TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384
// DHE-DSS + AES-GCM (128-bit)
0x00a2, // TLS_DHE_DSS_WITH_AES_128_GCM_SHA256
// AES-CCM (128-bit)
0xc0ae, // TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8
0xc0ac, // TLS_ECDHE_ECDSA_WITH_AES_128_CCM
0xc0a2, // TLS_DHE_RSA_WITH_AES_128_CCM_8
0xc09e, // TLS_DHE_RSA_WITH_AES_128_CCM
// ARIA (128-bit)
0xc05c, // TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256
0xc060, // TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256
0xc056, // TLS_DHE_DSS_WITH_ARIA_128_GCM_SHA256
0xc052, // TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256
// ECDHE/DHE + AES-CBC-SHA384/256 (more)
0xc024, // TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
0x006a, // TLS_DHE_DSS_WITH_AES_256_CBC_SHA256
0xc023, // TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
0x0040, // TLS_DHE_DSS_WITH_AES_128_CBC_SHA256
// ECDHE/DHE + AES-CBC-SHA (legacy)
0xc00a, // TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
0xc014, // TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
0x0039, // TLS_DHE_RSA_WITH_AES_256_CBC_SHA
0x0038, // TLS_DHE_DSS_WITH_AES_256_CBC_SHA
0xc009, // TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
0xc013, // TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
0x0033, // TLS_DHE_RSA_WITH_AES_128_CBC_SHA
0x0032, // TLS_DHE_DSS_WITH_AES_128_CBC_SHA
// RSA + AES-GCM/CCM/ARIA (non-PFS, 256-bit)
0x009d, // TLS_RSA_WITH_AES_256_GCM_SHA384
0xc0a1, // TLS_RSA_WITH_AES_256_CCM_8
0xc09d, // TLS_RSA_WITH_AES_256_CCM
0xc051, // TLS_RSA_WITH_ARIA_256_GCM_SHA384
// RSA + AES-GCM/CCM/ARIA (non-PFS, 128-bit)
0x009c, // TLS_RSA_WITH_AES_128_GCM_SHA256
0xc0a0, // TLS_RSA_WITH_AES_128_CCM_8
0xc09c, // TLS_RSA_WITH_AES_128_CCM
0xc050, // TLS_RSA_WITH_ARIA_128_GCM_SHA256
// RSA + AES-CBC (non-PFS, legacy)
0x003d, // TLS_RSA_WITH_AES_256_CBC_SHA256
0x003c, // TLS_RSA_WITH_AES_128_CBC_SHA256
0x0035, // TLS_RSA_WITH_AES_256_CBC_SHA
0x002f, // TLS_RSA_WITH_AES_128_CBC_SHA
// Renegotiation indication
0x00ff, // TLS_EMPTY_RENEGOTIATION_INFO_SCSV
}
// defaultCurves contains the 10 supported groups from Claude CLI (including FFDHE)
defaultCurves = []utls.CurveID{
utls.X25519, // 0x001d
utls.CurveP256, // 0x0017 (secp256r1)
utls.CurveID(0x001e), // x448
utls.CurveP521, // 0x0019 (secp521r1)
utls.CurveP384, // 0x0018 (secp384r1)
utls.CurveID(0x0100), // ffdhe2048
utls.CurveID(0x0101), // ffdhe3072
utls.CurveID(0x0102), // ffdhe4096
utls.CurveID(0x0103), // ffdhe6144
utls.CurveID(0x0104), // ffdhe8192
}
// defaultPointFormats contains all 3 point formats from Claude CLI
defaultPointFormats = []uint8{
0, // uncompressed
1, // ansiX962_compressed_prime
2, // ansiX962_compressed_char2
}
// defaultSignatureAlgorithms contains the 20 signature algorithms from Claude CLI
defaultSignatureAlgorithms = []utls.SignatureScheme{
0x0403, // ecdsa_secp256r1_sha256
0x0503, // ecdsa_secp384r1_sha384
0x0603, // ecdsa_secp521r1_sha512
0x0807, // ed25519
0x0808, // ed448
0x0809, // rsa_pss_pss_sha256
0x080a, // rsa_pss_pss_sha384
0x080b, // rsa_pss_pss_sha512
0x0804, // rsa_pss_rsae_sha256
0x0805, // rsa_pss_rsae_sha384
0x0806, // rsa_pss_rsae_sha512
0x0401, // rsa_pkcs1_sha256
0x0501, // rsa_pkcs1_sha384
0x0601, // rsa_pkcs1_sha512
0x0303, // ecdsa_sha224
0x0301, // rsa_pkcs1_sha224
0x0302, // dsa_sha224
0x0402, // dsa_sha256
0x0502, // dsa_sha384
0x0602, // dsa_sha512
}
)
// NewDialer creates a new TLS fingerprint dialer.
// baseDialer is used for TCP connection establishment (supports proxy scenarios).
// If baseDialer is nil, direct TCP dial is used.
func NewDialer(profile *Profile, baseDialer func(ctx context.Context, network, addr string) (net.Conn, error)) *Dialer {
if baseDialer == nil {
baseDialer = (&net.Dialer{}).DialContext
}
return &Dialer{profile: profile, baseDialer: baseDialer}
}
// NewHTTPProxyDialer creates a new TLS fingerprint dialer that works through HTTP/HTTPS proxies.
// It establishes a CONNECT tunnel before performing TLS handshake with custom fingerprint.
func NewHTTPProxyDialer(profile *Profile, proxyURL *url.URL) *HTTPProxyDialer {
return &HTTPProxyDialer{profile: profile, proxyURL: proxyURL}
}
// NewSOCKS5ProxyDialer creates a new TLS fingerprint dialer that works through SOCKS5 proxies.
// It establishes a SOCKS5 tunnel before performing TLS handshake with custom fingerprint.
func NewSOCKS5ProxyDialer(profile *Profile, proxyURL *url.URL) *SOCKS5ProxyDialer {
return &SOCKS5ProxyDialer{profile: profile, proxyURL: proxyURL}
}
// DialTLSContext establishes a TLS connection through SOCKS5 proxy with the configured fingerprint.
// Flow: SOCKS5 CONNECT to target -> TLS handshake with utls on the tunnel
func (d *SOCKS5ProxyDialer) DialTLSContext(ctx context.Context, network, addr string) (net.Conn, error) {
slog.Debug("tls_fingerprint_socks5_connecting", "proxy", d.proxyURL.Host, "target", addr)
// Step 1: Create SOCKS5 dialer
var auth *proxy.Auth
if d.proxyURL.User != nil {
username := d.proxyURL.User.Username()
password, _ := d.proxyURL.User.Password()
auth = &proxy.Auth{
User: username,
Password: password,
}
}
// Determine proxy address
proxyAddr := d.proxyURL.Host
if d.proxyURL.Port() == "" {
proxyAddr = net.JoinHostPort(d.proxyURL.Hostname(), "1080") // Default SOCKS5 port
}
socksDialer, err := proxy.SOCKS5("tcp", proxyAddr, auth, proxy.Direct)
if err != nil {
slog.Debug("tls_fingerprint_socks5_dialer_failed", "error", err)
return nil, fmt.Errorf("create SOCKS5 dialer: %w", err)
}
// Step 2: Establish SOCKS5 tunnel to target
slog.Debug("tls_fingerprint_socks5_establishing_tunnel", "target", addr)
conn, err := socksDialer.Dial("tcp", addr)
if err != nil {
slog.Debug("tls_fingerprint_socks5_connect_failed", "error", err)
return nil, fmt.Errorf("SOCKS5 connect: %w", err)
}
slog.Debug("tls_fingerprint_socks5_tunnel_established")
// Step 3: Perform TLS handshake on the tunnel with utls fingerprint
host, _, err := net.SplitHostPort(addr)
if err != nil {
host = addr
}
slog.Debug("tls_fingerprint_socks5_starting_handshake", "host", host)
// Build ClientHello specification from profile (Node.js/Claude CLI fingerprint)
spec := buildClientHelloSpecFromProfile(d.profile)
slog.Debug("tls_fingerprint_socks5_clienthello_spec",
"cipher_suites", len(spec.CipherSuites),
"extensions", len(spec.Extensions),
"compression_methods", spec.CompressionMethods,
"tls_vers_max", spec.TLSVersMax,
"tls_vers_min", spec.TLSVersMin)
if d.profile != nil {
slog.Debug("tls_fingerprint_socks5_using_profile", "name", d.profile.Name, "grease", d.profile.EnableGREASE)
}
// Create uTLS connection on the tunnel
tlsConn := utls.UClient(conn, &utls.Config{
ServerName: host,
}, utls.HelloCustom)
if err := tlsConn.ApplyPreset(spec); err != nil {
slog.Debug("tls_fingerprint_socks5_apply_preset_failed", "error", err)
_ = conn.Close()
return nil, fmt.Errorf("apply TLS preset: %w", err)
}
if err := tlsConn.HandshakeContext(ctx); err != nil {
slog.Debug("tls_fingerprint_socks5_handshake_failed", "error", err)
_ = conn.Close()
return nil, fmt.Errorf("TLS handshake failed: %w", err)
}
state := tlsConn.ConnectionState()
slog.Debug("tls_fingerprint_socks5_handshake_success",
"version", state.Version,
"cipher_suite", state.CipherSuite,
"alpn", state.NegotiatedProtocol)
return tlsConn, nil
}
// DialTLSContext establishes a TLS connection through HTTP proxy with the configured fingerprint.
// Flow: TCP connect to proxy -> CONNECT tunnel -> TLS handshake with utls
func (d *HTTPProxyDialer) DialTLSContext(ctx context.Context, network, addr string) (net.Conn, error) {
slog.Debug("tls_fingerprint_http_proxy_connecting", "proxy", d.proxyURL.Host, "target", addr)
// Step 1: TCP connect to proxy server
var proxyAddr string
if d.proxyURL.Port() != "" {
proxyAddr = d.proxyURL.Host
} else {
// Default ports
if d.proxyURL.Scheme == "https" {
proxyAddr = net.JoinHostPort(d.proxyURL.Hostname(), "443")
} else {
proxyAddr = net.JoinHostPort(d.proxyURL.Hostname(), "80")
}
}
dialer := &net.Dialer{}
conn, err := dialer.DialContext(ctx, "tcp", proxyAddr)
if err != nil {
slog.Debug("tls_fingerprint_http_proxy_connect_failed", "error", err)
return nil, fmt.Errorf("connect to proxy: %w", err)
}
slog.Debug("tls_fingerprint_http_proxy_connected", "proxy_addr", proxyAddr)
// Step 2: Send CONNECT request to establish tunnel
req := &http.Request{
Method: "CONNECT",
URL: &url.URL{Opaque: addr},
Host: addr,
Header: make(http.Header),
}
// Add proxy authentication if present
if d.proxyURL.User != nil {
username := d.proxyURL.User.Username()
password, _ := d.proxyURL.User.Password()
auth := base64.StdEncoding.EncodeToString([]byte(username + ":" + password))
req.Header.Set("Proxy-Authorization", "Basic "+auth)
}
slog.Debug("tls_fingerprint_http_proxy_sending_connect", "target", addr)
if err := req.Write(conn); err != nil {
_ = conn.Close()
slog.Debug("tls_fingerprint_http_proxy_write_failed", "error", err)
return nil, fmt.Errorf("write CONNECT request: %w", err)
}
// Step 3: Read CONNECT response
br := bufio.NewReader(conn)
resp, err := http.ReadResponse(br, req)
if err != nil {
_ = conn.Close()
slog.Debug("tls_fingerprint_http_proxy_read_response_failed", "error", err)
return nil, fmt.Errorf("read CONNECT response: %w", err)
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != http.StatusOK {
_ = conn.Close()
slog.Debug("tls_fingerprint_http_proxy_connect_failed_status", "status_code", resp.StatusCode, "status", resp.Status)
return nil, fmt.Errorf("proxy CONNECT failed: %s", resp.Status)
}
slog.Debug("tls_fingerprint_http_proxy_tunnel_established")
// Step 4: Perform TLS handshake on the tunnel with utls fingerprint
host, _, err := net.SplitHostPort(addr)
if err != nil {
host = addr
}
slog.Debug("tls_fingerprint_http_proxy_starting_handshake", "host", host)
// Build ClientHello specification (reuse the shared method)
spec := buildClientHelloSpecFromProfile(d.profile)
slog.Debug("tls_fingerprint_http_proxy_clienthello_spec",
"cipher_suites", len(spec.CipherSuites),
"extensions", len(spec.Extensions))
if d.profile != nil {
slog.Debug("tls_fingerprint_http_proxy_using_profile", "name", d.profile.Name, "grease", d.profile.EnableGREASE)
}
// Create uTLS connection on the tunnel
// Note: TLS 1.3 cipher suites are handled automatically by utls when TLS 1.3 is in SupportedVersions
tlsConn := utls.UClient(conn, &utls.Config{
ServerName: host,
}, utls.HelloCustom)
if err := tlsConn.ApplyPreset(spec); err != nil {
slog.Debug("tls_fingerprint_http_proxy_apply_preset_failed", "error", err)
_ = conn.Close()
return nil, fmt.Errorf("apply TLS preset: %w", err)
}
if err := tlsConn.HandshakeContext(ctx); err != nil {
slog.Debug("tls_fingerprint_http_proxy_handshake_failed", "error", err)
_ = conn.Close()
return nil, fmt.Errorf("TLS handshake failed: %w", err)
}
state := tlsConn.ConnectionState()
slog.Debug("tls_fingerprint_http_proxy_handshake_success",
"version", state.Version,
"cipher_suite", state.CipherSuite,
"alpn", state.NegotiatedProtocol)
return tlsConn, nil
}
// DialTLSContext establishes a TLS connection with the configured fingerprint.
// This method is designed to be used as http.Transport.DialTLSContext.
func (d *Dialer) DialTLSContext(ctx context.Context, network, addr string) (net.Conn, error) {
// Establish TCP connection using base dialer (supports proxy)
slog.Debug("tls_fingerprint_dialing_tcp", "addr", addr)
conn, err := d.baseDialer(ctx, network, addr)
if err != nil {
slog.Debug("tls_fingerprint_tcp_dial_failed", "error", err)
return nil, err
}
slog.Debug("tls_fingerprint_tcp_connected", "addr", addr)
// Extract hostname for SNI
host, _, err := net.SplitHostPort(addr)
if err != nil {
host = addr
}
slog.Debug("tls_fingerprint_sni_hostname", "host", host)
// Build ClientHello specification
spec := d.buildClientHelloSpec()
slog.Debug("tls_fingerprint_clienthello_spec",
"cipher_suites", len(spec.CipherSuites),
"extensions", len(spec.Extensions))
// Log profile info
if d.profile != nil {
slog.Debug("tls_fingerprint_using_profile", "name", d.profile.Name, "grease", d.profile.EnableGREASE)
} else {
slog.Debug("tls_fingerprint_using_default_profile")
}
// Create uTLS connection
// Note: TLS 1.3 cipher suites are handled automatically by utls when TLS 1.3 is in SupportedVersions
tlsConn := utls.UClient(conn, &utls.Config{
ServerName: host,
}, utls.HelloCustom)
// Apply fingerprint
if err := tlsConn.ApplyPreset(spec); err != nil {
slog.Debug("tls_fingerprint_apply_preset_failed", "error", err)
_ = conn.Close()
return nil, err
}
slog.Debug("tls_fingerprint_preset_applied")
// Perform TLS handshake
if err := tlsConn.HandshakeContext(ctx); err != nil {
slog.Debug("tls_fingerprint_handshake_failed",
"error", err,
"local_addr", conn.LocalAddr(),
"remote_addr", conn.RemoteAddr())
_ = conn.Close()
return nil, fmt.Errorf("TLS handshake failed: %w", err)
}
// Log successful handshake details
state := tlsConn.ConnectionState()
slog.Debug("tls_fingerprint_handshake_success",
"version", state.Version,
"cipher_suite", state.CipherSuite,
"alpn", state.NegotiatedProtocol)
return tlsConn, nil
}
// buildClientHelloSpec constructs the ClientHello specification based on the profile.
func (d *Dialer) buildClientHelloSpec() *utls.ClientHelloSpec {
return buildClientHelloSpecFromProfile(d.profile)
}
// toUTLSCurves converts uint16 slice to utls.CurveID slice.
func toUTLSCurves(curves []uint16) []utls.CurveID {
result := make([]utls.CurveID, len(curves))
for i, c := range curves {
result[i] = utls.CurveID(c)
}
return result
}
// buildClientHelloSpecFromProfile constructs ClientHelloSpec from a Profile.
// This is a standalone function that can be used by both Dialer and HTTPProxyDialer.
func buildClientHelloSpecFromProfile(profile *Profile) *utls.ClientHelloSpec {
// Get cipher suites
var cipherSuites []uint16
if profile != nil && len(profile.CipherSuites) > 0 {
cipherSuites = profile.CipherSuites
} else {
cipherSuites = defaultCipherSuites
}
// Get curves
var curves []utls.CurveID
if profile != nil && len(profile.Curves) > 0 {
curves = toUTLSCurves(profile.Curves)
} else {
curves = defaultCurves
}
// Get point formats
var pointFormats []uint8
if profile != nil && len(profile.PointFormats) > 0 {
pointFormats = profile.PointFormats
} else {
pointFormats = defaultPointFormats
}
// Check if GREASE is enabled
enableGREASE := profile != nil && profile.EnableGREASE
extensions := make([]utls.TLSExtension, 0, 16)
if enableGREASE {
extensions = append(extensions, &utls.UtlsGREASEExtension{})
}
// SNI extension - MUST be explicitly added for HelloCustom mode
// utls will populate the server name from Config.ServerName
extensions = append(extensions, &utls.SNIExtension{})
// Claude CLI extension order (captured from tshark):
// server_name(0), ec_point_formats(11), supported_groups(10), session_ticket(35),
// alpn(16), encrypt_then_mac(22), extended_master_secret(23),
// signature_algorithms(13), supported_versions(43),
// psk_key_exchange_modes(45), key_share(51)
extensions = append(extensions,
&utls.SupportedPointsExtension{SupportedPoints: pointFormats},
&utls.SupportedCurvesExtension{Curves: curves},
&utls.SessionTicketExtension{},
&utls.ALPNExtension{AlpnProtocols: []string{"http/1.1"}},
&utls.GenericExtension{Id: 22},
&utls.ExtendedMasterSecretExtension{},
&utls.SignatureAlgorithmsExtension{SupportedSignatureAlgorithms: defaultSignatureAlgorithms},
&utls.SupportedVersionsExtension{Versions: []uint16{
utls.VersionTLS13,
utls.VersionTLS12,
}},
&utls.PSKKeyExchangeModesExtension{Modes: []uint8{utls.PskModeDHE}},
&utls.KeyShareExtension{KeyShares: []utls.KeyShare{
{Group: utls.X25519},
}},
)
if enableGREASE {
extensions = append(extensions, &utls.UtlsGREASEExtension{})
}
return &utls.ClientHelloSpec{
CipherSuites: cipherSuites,
CompressionMethods: []uint8{0}, // null compression only (standard)
Extensions: extensions,
TLSVersMax: utls.VersionTLS13,
TLSVersMin: utls.VersionTLS10,
}
}

279
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/tlsfingerprint/dialer_integration_test.go Normal file
View File

@@ -0,0 +1,279 @@
//go:build integration
// Package tlsfingerprint provides TLS fingerprint simulation for HTTP clients.
//
// Integration tests for verifying TLS fingerprint correctness.
// These tests make actual network requests to external services and should be run manually.
//
// Run with: go test -v -tags=integration ./internal/pkg/tlsfingerprint/...
package tlsfingerprint
import (
"context"
"encoding/json"
"io"
"net/http"
"strings"
"testing"
"time"
)
// skipIfExternalServiceUnavailable checks if the external service is available.
// If not, it skips the test instead of failing.
func skipIfExternalServiceUnavailable(t *testing.T, err error) {
t.Helper()
if err != nil {
// Check for common network/TLS errors that indicate external service issues
errStr := err.Error()
if strings.Contains(errStr, "certificate has expired") ||
strings.Contains(errStr, "certificate is not yet valid") ||
strings.Contains(errStr, "connection refused") ||
strings.Contains(errStr, "no such host") ||
strings.Contains(errStr, "network is unreachable") ||
strings.Contains(errStr, "timeout") ||
strings.Contains(errStr, "deadline exceeded") {
t.Skipf("skipping test: external service unavailable: %v", err)
}
t.Fatalf("failed to get fingerprint: %v", err)
}
}
// TestJA3Fingerprint verifies the JA3/JA4 fingerprint matches expected value.
// This test uses tls.peet.ws to verify the fingerprint.
// Expected JA3 hash: 1a28e69016765d92e3b381168d68922c (Claude CLI / Node.js 20.x)
// Expected JA4: t13d5911h1_a33745022dd6_1f22a2ca17c4 (d=domain) or t13i5911h1_... (i=IP)
func TestJA3Fingerprint(t *testing.T) {
// Skip if network is unavailable or if running in short mode
if testing.Short() {
t.Skip("skipping integration test in short mode")
}
profile := &Profile{
Name: "Claude CLI Test",
EnableGREASE: false,
}
dialer := NewDialer(profile, nil)
client := &http.Client{
Transport: &http.Transport{
DialTLSContext: dialer.DialTLSContext,
},
Timeout: 30 * time.Second,
}
// Use tls.peet.ws fingerprint detection API
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
req, err := http.NewRequestWithContext(ctx, "GET", "https://tls.peet.ws/api/all", nil)
if err != nil {
t.Fatalf("failed to create request: %v", err)
}
req.Header.Set("User-Agent", "Claude Code/2.0.0 Node.js/20.0.0")
resp, err := client.Do(req)
skipIfExternalServiceUnavailable(t, err)
defer func() { _ = resp.Body.Close() }()
body, err := io.ReadAll(resp.Body)
if err != nil {
t.Fatalf("failed to read response: %v", err)
}
var fpResp FingerprintResponse
if err := json.Unmarshal(body, &fpResp); err != nil {
t.Logf("Response body: %s", string(body))
t.Fatalf("failed to parse fingerprint response: %v", err)
}
// Log all fingerprint information
t.Logf("JA3: %s", fpResp.TLS.JA3)
t.Logf("JA3 Hash: %s", fpResp.TLS.JA3Hash)
t.Logf("JA4: %s", fpResp.TLS.JA4)
t.Logf("PeetPrint: %s", fpResp.TLS.PeetPrint)
t.Logf("PeetPrint Hash: %s", fpResp.TLS.PeetPrintHash)
// Verify JA3 hash matches expected value
expectedJA3Hash := "1a28e69016765d92e3b381168d68922c"
if fpResp.TLS.JA3Hash == expectedJA3Hash {
t.Logf("✓ JA3 hash matches expected value: %s", expectedJA3Hash)
} else {
t.Errorf("✗ JA3 hash mismatch: got %s, expected %s", fpResp.TLS.JA3Hash, expectedJA3Hash)
}
// Verify JA4 fingerprint
// JA4 format: t[version][sni][cipher_count][ext_count][alpn]_[cipher_hash]_[ext_hash]
// Expected: t13d5910h1 (d=domain) or t13i5910h1 (i=IP)
// The suffix _a33745022dd6_1f22a2ca17c4 should match
expectedJA4Suffix := "_a33745022dd6_1f22a2ca17c4"
if strings.HasSuffix(fpResp.TLS.JA4, expectedJA4Suffix) {
t.Logf("✓ JA4 suffix matches expected value: %s", expectedJA4Suffix)
} else {
t.Errorf("✗ JA4 suffix mismatch: got %s, expected suffix %s", fpResp.TLS.JA4, expectedJA4Suffix)
}
// Verify JA4 prefix (t13d5911h1 or t13i5911h1)
// d = domain (SNI present), i = IP (no SNI)
// Since we connect to tls.peet.ws (domain), we expect 'd'
expectedJA4Prefix := "t13d5911h1"
if strings.HasPrefix(fpResp.TLS.JA4, expectedJA4Prefix) {
t.Logf("✓ JA4 prefix matches: %s (t13=TLS1.3, d=domain, 59=ciphers, 11=extensions, h1=HTTP/1.1)", expectedJA4Prefix)
} else {
// Also accept 'i' variant for IP connections
altPrefix := "t13i5911h1"
if strings.HasPrefix(fpResp.TLS.JA4, altPrefix) {
t.Logf("✓ JA4 prefix matches (IP variant): %s", altPrefix)
} else {
t.Errorf("✗ JA4 prefix mismatch: got %s, expected %s or %s", fpResp.TLS.JA4, expectedJA4Prefix, altPrefix)
}
}
// Verify JA3 contains expected cipher suites (TLS 1.3 ciphers at the beginning)
if strings.Contains(fpResp.TLS.JA3, "4866-4867-4865") {
t.Logf("✓ JA3 contains expected TLS 1.3 cipher suites")
} else {
t.Logf("Warning: JA3 does not contain expected TLS 1.3 cipher suites")
}
// Verify extension list (should be 11 extensions including SNI)
// Expected: 0-11-10-35-16-22-23-13-43-45-51
expectedExtensions := "0-11-10-35-16-22-23-13-43-45-51"
if strings.Contains(fpResp.TLS.JA3, expectedExtensions) {
t.Logf("✓ JA3 contains expected extension list: %s", expectedExtensions)
} else {
t.Logf("Warning: JA3 extension list may differ")
}
}
// TestProfileExpectation defines expected fingerprint values for a profile.
type TestProfileExpectation struct {
Profile *Profile
ExpectedJA3 string // Expected JA3 hash (empty = don't check)
ExpectedJA4 string // Expected full JA4 (empty = don't check)
JA4CipherHash string // Expected JA4 cipher hash - the stable middle part (empty = don't check)
}
// TestAllProfiles tests multiple TLS fingerprint profiles against tls.peet.ws.
// Run with: go test -v -tags=integration -run TestAllProfiles ./internal/pkg/tlsfingerprint/...
func TestAllProfiles(t *testing.T) {
if testing.Short() {
t.Skip("skipping integration test in short mode")
}
// Define all profiles to test with their expected fingerprints
// These profiles are from config.yaml gateway.tls_fingerprint.profiles
profiles := []TestProfileExpectation{
{
// Linux x64 Node.js v22.17.1
// Expected JA3 Hash: 1a28e69016765d92e3b381168d68922c
// Expected JA4: t13d5911h1_a33745022dd6_1f22a2ca17c4
Profile: &Profile{
Name: "linux_x64_node_v22171",
EnableGREASE: false,
CipherSuites: []uint16{4866, 4867, 4865, 49199, 49195, 49200, 49196, 158, 49191, 103, 49192, 107, 163, 159, 52393, 52392, 52394, 49327, 49325, 49315, 49311, 49245, 49249, 49239, 49235, 162, 49326, 49324, 49314, 49310, 49244, 49248, 49238, 49234, 49188, 106, 49187, 64, 49162, 49172, 57, 56, 49161, 49171, 51, 50, 157, 49313, 49309, 49233, 156, 49312, 49308, 49232, 61, 60, 53, 47, 255},
Curves: []uint16{29, 23, 30, 25, 24, 256, 257, 258, 259, 260},
PointFormats: []uint8{0, 1, 2},
},
JA4CipherHash: "a33745022dd6", // stable part
},
{
// MacOS arm64 Node.js v22.18.0
// Expected JA3 Hash: 70cb5ca646080902703ffda87036a5ea
// Expected JA4: t13d5912h1_a33745022dd6_dbd39dd1d406
Profile: &Profile{
Name: "macos_arm64_node_v22180",
EnableGREASE: false,
CipherSuites: []uint16{4866, 4867, 4865, 49199, 49195, 49200, 49196, 158, 49191, 103, 49192, 107, 163, 159, 52393, 52392, 52394, 49327, 49325, 49315, 49311, 49245, 49249, 49239, 49235, 162, 49326, 49324, 49314, 49310, 49244, 49248, 49238, 49234, 49188, 106, 49187, 64, 49162, 49172, 57, 56, 49161, 49171, 51, 50, 157, 49313, 49309, 49233, 156, 49312, 49308, 49232, 61, 60, 53, 47, 255},
Curves: []uint16{29, 23, 30, 25, 24, 256, 257, 258, 259, 260},
PointFormats: []uint8{0, 1, 2},
},
JA4CipherHash: "a33745022dd6", // stable part (same cipher suites)
},
}
for _, tc := range profiles {
tc := tc // capture range variable
t.Run(tc.Profile.Name, func(t *testing.T) {
fp := fetchFingerprint(t, tc.Profile)
if fp == nil {
return // fetchFingerprint already called t.Fatal
}
t.Logf("Profile: %s", tc.Profile.Name)
t.Logf(" JA3: %s", fp.JA3)
t.Logf(" JA3 Hash: %s", fp.JA3Hash)
t.Logf(" JA4: %s", fp.JA4)
t.Logf(" PeetPrint: %s", fp.PeetPrint)
t.Logf(" PeetPrintHash: %s", fp.PeetPrintHash)
// Verify expectations
if tc.ExpectedJA3 != "" {
if fp.JA3Hash == tc.ExpectedJA3 {
t.Logf(" ✓ JA3 hash matches: %s", tc.ExpectedJA3)
} else {
t.Errorf(" ✗ JA3 hash mismatch: got %s, expected %s", fp.JA3Hash, tc.ExpectedJA3)
}
}
if tc.ExpectedJA4 != "" {
if fp.JA4 == tc.ExpectedJA4 {
t.Logf(" ✓ JA4 matches: %s", tc.ExpectedJA4)
} else {
t.Errorf(" ✗ JA4 mismatch: got %s, expected %s", fp.JA4, tc.ExpectedJA4)
}
}
// Check JA4 cipher hash (stable middle part)
// JA4 format: prefix_cipherHash_extHash
if tc.JA4CipherHash != "" {
if strings.Contains(fp.JA4, "_"+tc.JA4CipherHash+"_") {
t.Logf(" ✓ JA4 cipher hash matches: %s", tc.JA4CipherHash)
} else {
t.Errorf(" ✗ JA4 cipher hash mismatch: got %s, expected cipher hash %s", fp.JA4, tc.JA4CipherHash)
}
}
})
}
}
// fetchFingerprint makes a request to tls.peet.ws and returns the TLS fingerprint info.
func fetchFingerprint(t *testing.T, profile *Profile) *TLSInfo {
t.Helper()
dialer := NewDialer(profile, nil)
client := &http.Client{
Transport: &http.Transport{
DialTLSContext: dialer.DialTLSContext,
},
Timeout: 30 * time.Second,
}
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
req, err := http.NewRequestWithContext(ctx, "GET", "https://tls.peet.ws/api/all", nil)
if err != nil {
t.Fatalf("failed to create request: %v", err)
return nil
}
req.Header.Set("User-Agent", "Claude Code/2.0.0 Node.js/20.0.0")
resp, err := client.Do(req)
skipIfExternalServiceUnavailable(t, err)
defer func() { _ = resp.Body.Close() }()
body, err := io.ReadAll(resp.Body)
if err != nil {
t.Fatalf("failed to read response: %v", err)
return nil
}
var fpResp FingerprintResponse
if err := json.Unmarshal(body, &fpResp); err != nil {
t.Logf("Response body: %s", string(body))
t.Fatalf("failed to parse fingerprint response: %v", err)
return nil
}
return &fpResp.TLS
}

431
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/tlsfingerprint/dialer_test.go Normal file
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//go:build unit
// Package tlsfingerprint provides TLS fingerprint simulation for HTTP clients.
//
// Unit tests for TLS fingerprint dialer.
// Integration tests that require external network are in dialer_integration_test.go
// and require the 'integration' build tag.
//
// Run unit tests: go test -v ./internal/pkg/tlsfingerprint/...
// Run integration tests: go test -v -tags=integration ./internal/pkg/tlsfingerprint/...
package tlsfingerprint
import (
"context"
"encoding/json"
"io"
"net/http"
"net/url"
"os"
"strings"
"testing"
"time"
)
// TestDialerBasicConnection tests that the dialer can establish TLS connections.
func TestDialerBasicConnection(t *testing.T) {
skipNetworkTest(t)
// Create a dialer with default profile
profile := &Profile{
Name: "Test Profile",
EnableGREASE: false,
}
dialer := NewDialer(profile, nil)
// Create HTTP client with custom TLS dialer
client := &http.Client{
Transport: &http.Transport{
DialTLSContext: dialer.DialTLSContext,
},
Timeout: 30 * time.Second,
}
// Make a request to a known HTTPS endpoint
resp, err := client.Get("https://www.google.com")
if err != nil {
t.Fatalf("failed to connect: %v", err)
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != http.StatusOK {
t.Errorf("expected status 200, got %d", resp.StatusCode)
}
}
// TestJA3Fingerprint verifies the JA3/JA4 fingerprint matches expected value.
// This test uses tls.peet.ws to verify the fingerprint.
// Expected JA3 hash: 1a28e69016765d92e3b381168d68922c (Claude CLI / Node.js 20.x)
// Expected JA4: t13d5911h1_a33745022dd6_1f22a2ca17c4 (d=domain) or t13i5911h1_... (i=IP)
func TestJA3Fingerprint(t *testing.T) {
skipNetworkTest(t)
profile := &Profile{
Name: "Claude CLI Test",
EnableGREASE: false,
}
dialer := NewDialer(profile, nil)
client := &http.Client{
Transport: &http.Transport{
DialTLSContext: dialer.DialTLSContext,
},
Timeout: 30 * time.Second,
}
// Use tls.peet.ws fingerprint detection API
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
req, err := http.NewRequestWithContext(ctx, "GET", "https://tls.peet.ws/api/all", nil)
if err != nil {
t.Fatalf("failed to create request: %v", err)
}
req.Header.Set("User-Agent", "Claude Code/2.0.0 Node.js/20.0.0")
resp, err := client.Do(req)
if err != nil {
t.Fatalf("failed to get fingerprint: %v", err)
}
defer func() { _ = resp.Body.Close() }()
body, err := io.ReadAll(resp.Body)
if err != nil {
t.Fatalf("failed to read response: %v", err)
}
var fpResp FingerprintResponse
if err := json.Unmarshal(body, &fpResp); err != nil {
t.Logf("Response body: %s", string(body))
t.Fatalf("failed to parse fingerprint response: %v", err)
}
// Log all fingerprint information
t.Logf("JA3: %s", fpResp.TLS.JA3)
t.Logf("JA3 Hash: %s", fpResp.TLS.JA3Hash)
t.Logf("JA4: %s", fpResp.TLS.JA4)
t.Logf("PeetPrint: %s", fpResp.TLS.PeetPrint)
t.Logf("PeetPrint Hash: %s", fpResp.TLS.PeetPrintHash)
// Verify JA3 hash matches expected value
expectedJA3Hash := "1a28e69016765d92e3b381168d68922c"
if fpResp.TLS.JA3Hash == expectedJA3Hash {
t.Logf("✓ JA3 hash matches expected value: %s", expectedJA3Hash)
} else {
t.Errorf("✗ JA3 hash mismatch: got %s, expected %s", fpResp.TLS.JA3Hash, expectedJA3Hash)
}
// Verify JA4 fingerprint
// JA4 format: t[version][sni][cipher_count][ext_count][alpn]_[cipher_hash]_[ext_hash]
// Expected: t13d5910h1 (d=domain) or t13i5910h1 (i=IP)
// The suffix _a33745022dd6_1f22a2ca17c4 should match
expectedJA4Suffix := "_a33745022dd6_1f22a2ca17c4"
if strings.HasSuffix(fpResp.TLS.JA4, expectedJA4Suffix) {
t.Logf("✓ JA4 suffix matches expected value: %s", expectedJA4Suffix)
} else {
t.Errorf("✗ JA4 suffix mismatch: got %s, expected suffix %s", fpResp.TLS.JA4, expectedJA4Suffix)
}
// Verify JA4 prefix (t13d5911h1 or t13i5911h1)
// d = domain (SNI present), i = IP (no SNI)
// Since we connect to tls.peet.ws (domain), we expect 'd'
expectedJA4Prefix := "t13d5911h1"
if strings.HasPrefix(fpResp.TLS.JA4, expectedJA4Prefix) {
t.Logf("✓ JA4 prefix matches: %s (t13=TLS1.3, d=domain, 59=ciphers, 11=extensions, h1=HTTP/1.1)", expectedJA4Prefix)
} else {
// Also accept 'i' variant for IP connections
altPrefix := "t13i5911h1"
if strings.HasPrefix(fpResp.TLS.JA4, altPrefix) {
t.Logf("✓ JA4 prefix matches (IP variant): %s", altPrefix)
} else {
t.Errorf("✗ JA4 prefix mismatch: got %s, expected %s or %s", fpResp.TLS.JA4, expectedJA4Prefix, altPrefix)
}
}
// Verify JA3 contains expected cipher suites (TLS 1.3 ciphers at the beginning)
if strings.Contains(fpResp.TLS.JA3, "4866-4867-4865") {
t.Logf("✓ JA3 contains expected TLS 1.3 cipher suites")
} else {
t.Logf("Warning: JA3 does not contain expected TLS 1.3 cipher suites")
}
// Verify extension list (should be 11 extensions including SNI)
// Expected: 0-11-10-35-16-22-23-13-43-45-51
expectedExtensions := "0-11-10-35-16-22-23-13-43-45-51"
if strings.Contains(fpResp.TLS.JA3, expectedExtensions) {
t.Logf("✓ JA3 contains expected extension list: %s", expectedExtensions)
} else {
t.Logf("Warning: JA3 extension list may differ")
}
}
func skipNetworkTest(t *testing.T) {
if testing.Short() {
t.Skip("跳过网络测试（short 模式）")
}
if os.Getenv("TLSFINGERPRINT_NETWORK_TESTS") != "1" {
t.Skip("跳过网络测试（需要设置 TLSFINGERPRINT_NETWORK_TESTS=1）")
}
}
// TestDialerWithProfile tests that different profiles produce different fingerprints.
func TestDialerWithProfile(t *testing.T) {
// Create two dialers with different profiles
profile1 := &Profile{
Name: "Profile 1 - No GREASE",
EnableGREASE: false,
}
profile2 := &Profile{
Name: "Profile 2 - With GREASE",
EnableGREASE: true,
}
dialer1 := NewDialer(profile1, nil)
dialer2 := NewDialer(profile2, nil)
// Build specs and compare
// Note: We can't directly compare JA3 without making network requests
// but we can verify the specs are different
spec1 := dialer1.buildClientHelloSpec()
spec2 := dialer2.buildClientHelloSpec()
// Profile with GREASE should have more extensions
if len(spec2.Extensions) <= len(spec1.Extensions) {
t.Error("expected GREASE profile to have more extensions")
}
}
// TestHTTPProxyDialerBasic tests HTTP proxy dialer creation.
// Note: This is a unit test - actual proxy testing requires a proxy server.
func TestHTTPProxyDialerBasic(t *testing.T) {
profile := &Profile{
Name: "Test Profile",
EnableGREASE: false,
}
// Test that dialer is created without panic
proxyURL := mustParseURL("http://proxy.example.com:8080")
dialer := NewHTTPProxyDialer(profile, proxyURL)
if dialer == nil {
t.Fatal("expected dialer to be created")
}
if dialer.profile != profile {
t.Error("expected profile to be set")
}
if dialer.proxyURL != proxyURL {
t.Error("expected proxyURL to be set")
}
}
// TestSOCKS5ProxyDialerBasic tests SOCKS5 proxy dialer creation.
// Note: This is a unit test - actual proxy testing requires a proxy server.
func TestSOCKS5ProxyDialerBasic(t *testing.T) {
profile := &Profile{
Name: "Test Profile",
EnableGREASE: false,
}
// Test that dialer is created without panic
proxyURL := mustParseURL("socks5://proxy.example.com:1080")
dialer := NewSOCKS5ProxyDialer(profile, proxyURL)
if dialer == nil {
t.Fatal("expected dialer to be created")
}
if dialer.profile != profile {
t.Error("expected profile to be set")
}
if dialer.proxyURL != proxyURL {
t.Error("expected proxyURL to be set")
}
}
// TestBuildClientHelloSpec tests ClientHello spec construction.
func TestBuildClientHelloSpec(t *testing.T) {
// Test with nil profile (should use defaults)
spec := buildClientHelloSpecFromProfile(nil)
if len(spec.CipherSuites) == 0 {
t.Error("expected cipher suites to be set")
}
if len(spec.Extensions) == 0 {
t.Error("expected extensions to be set")
}
// Verify default cipher suites are used
if len(spec.CipherSuites) != len(defaultCipherSuites) {
t.Errorf("expected %d cipher suites, got %d", len(defaultCipherSuites), len(spec.CipherSuites))
}
// Test with custom profile
customProfile := &Profile{
Name: "Custom",
EnableGREASE: false,
CipherSuites: []uint16{0x1301, 0x1302},
}
spec = buildClientHelloSpecFromProfile(customProfile)
if len(spec.CipherSuites) != 2 {
t.Errorf("expected 2 cipher suites, got %d", len(spec.CipherSuites))
}
}
// TestToUTLSCurves tests curve ID conversion.
func TestToUTLSCurves(t *testing.T) {
input := []uint16{0x001d, 0x0017, 0x0018}
result := toUTLSCurves(input)
if len(result) != len(input) {
t.Errorf("expected %d curves, got %d", len(input), len(result))
}
for i, curve := range result {
if uint16(curve) != input[i] {
t.Errorf("curve %d: expected 0x%04x, got 0x%04x", i, input[i], uint16(curve))
}
}
}
// Helper function to parse URL without error handling.
func mustParseURL(rawURL string) *url.URL {
u, err := url.Parse(rawURL)
if err != nil {
panic(err)
}
return u
}
// TestProfileExpectation defines expected fingerprint values for a profile.
type TestProfileExpectation struct {
Profile *Profile
ExpectedJA3 string // Expected JA3 hash (empty = don't check)
ExpectedJA4 string // Expected full JA4 (empty = don't check)
JA4CipherHash string // Expected JA4 cipher hash - the stable middle part (empty = don't check)
}
// TestAllProfiles tests multiple TLS fingerprint profiles against tls.peet.ws.
// Run with: go test -v -run TestAllProfiles ./internal/pkg/tlsfingerprint/...
func TestAllProfiles(t *testing.T) {
skipNetworkTest(t)
// Define all profiles to test with their expected fingerprints
// These profiles are from config.yaml gateway.tls_fingerprint.profiles
profiles := []TestProfileExpectation{
{
// Linux x64 Node.js v22.17.1
// Expected JA3 Hash: 1a28e69016765d92e3b381168d68922c
// Expected JA4: t13d5911h1_a33745022dd6_1f22a2ca17c4
Profile: &Profile{
Name: "linux_x64_node_v22171",
EnableGREASE: false,
CipherSuites: []uint16{4866, 4867, 4865, 49199, 49195, 49200, 49196, 158, 49191, 103, 49192, 107, 163, 159, 52393, 52392, 52394, 49327, 49325, 49315, 49311, 49245, 49249, 49239, 49235, 162, 49326, 49324, 49314, 49310, 49244, 49248, 49238, 49234, 49188, 106, 49187, 64, 49162, 49172, 57, 56, 49161, 49171, 51, 50, 157, 49313, 49309, 49233, 156, 49312, 49308, 49232, 61, 60, 53, 47, 255},
Curves: []uint16{29, 23, 30, 25, 24, 256, 257, 258, 259, 260},
PointFormats: []uint8{0, 1, 2},
},
JA4CipherHash: "a33745022dd6", // stable part
},
{
// MacOS arm64 Node.js v22.18.0
// Expected JA3 Hash: 70cb5ca646080902703ffda87036a5ea
// Expected JA4: t13d5912h1_a33745022dd6_dbd39dd1d406
Profile: &Profile{
Name: "macos_arm64_node_v22180",
EnableGREASE: false,
CipherSuites: []uint16{4866, 4867, 4865, 49199, 49195, 49200, 49196, 158, 49191, 103, 49192, 107, 163, 159, 52393, 52392, 52394, 49327, 49325, 49315, 49311, 49245, 49249, 49239, 49235, 162, 49326, 49324, 49314, 49310, 49244, 49248, 49238, 49234, 49188, 106, 49187, 64, 49162, 49172, 57, 56, 49161, 49171, 51, 50, 157, 49313, 49309, 49233, 156, 49312, 49308, 49232, 61, 60, 53, 47, 255},
Curves: []uint16{29, 23, 30, 25, 24, 256, 257, 258, 259, 260},
PointFormats: []uint8{0, 1, 2},
},
JA4CipherHash: "a33745022dd6", // stable part (same cipher suites)
},
}
for _, tc := range profiles {
tc := tc // capture range variable
t.Run(tc.Profile.Name, func(t *testing.T) {
fp := fetchFingerprint(t, tc.Profile)
if fp == nil {
return // fetchFingerprint already called t.Fatal
}
t.Logf("Profile: %s", tc.Profile.Name)
t.Logf(" JA3: %s", fp.JA3)
t.Logf(" JA3 Hash: %s", fp.JA3Hash)
t.Logf(" JA4: %s", fp.JA4)
t.Logf(" PeetPrint: %s", fp.PeetPrint)
t.Logf(" PeetPrintHash: %s", fp.PeetPrintHash)
// Verify expectations
if tc.ExpectedJA3 != "" {
if fp.JA3Hash == tc.ExpectedJA3 {
t.Logf(" ✓ JA3 hash matches: %s", tc.ExpectedJA3)
} else {
t.Errorf(" ✗ JA3 hash mismatch: got %s, expected %s", fp.JA3Hash, tc.ExpectedJA3)
}
}
if tc.ExpectedJA4 != "" {
if fp.JA4 == tc.ExpectedJA4 {
t.Logf(" ✓ JA4 matches: %s", tc.ExpectedJA4)
} else {
t.Errorf(" ✗ JA4 mismatch: got %s, expected %s", fp.JA4, tc.ExpectedJA4)
}
}
// Check JA4 cipher hash (stable middle part)
// JA4 format: prefix_cipherHash_extHash
if tc.JA4CipherHash != "" {
if strings.Contains(fp.JA4, "_"+tc.JA4CipherHash+"_") {
t.Logf(" ✓ JA4 cipher hash matches: %s", tc.JA4CipherHash)
} else {
t.Errorf(" ✗ JA4 cipher hash mismatch: got %s, expected cipher hash %s", fp.JA4, tc.JA4CipherHash)
}
}
})
}
}
// fetchFingerprint makes a request to tls.peet.ws and returns the TLS fingerprint info.
func fetchFingerprint(t *testing.T, profile *Profile) *TLSInfo {
t.Helper()
dialer := NewDialer(profile, nil)
client := &http.Client{
Transport: &http.Transport{
DialTLSContext: dialer.DialTLSContext,
},
Timeout: 30 * time.Second,
}
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
req, err := http.NewRequestWithContext(ctx, "GET", "https://tls.peet.ws/api/all", nil)
if err != nil {
t.Fatalf("failed to create request: %v", err)
return nil
}
req.Header.Set("User-Agent", "Claude Code/2.0.0 Node.js/20.0.0")
resp, err := client.Do(req)
if err != nil {
t.Fatalf("failed to get fingerprint: %v", err)
return nil
}
defer func() { _ = resp.Body.Close() }()
body, err := io.ReadAll(resp.Body)
if err != nil {
t.Fatalf("failed to read response: %v", err)
return nil
}
var fpResp FingerprintResponse
if err := json.Unmarshal(body, &fpResp); err != nil {
t.Logf("Response body: %s", string(body))
t.Fatalf("failed to parse fingerprint response: %v", err)
return nil
}
return &fpResp.TLS
}

171
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/tlsfingerprint/registry.go Normal file
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// Package tlsfingerprint provides TLS fingerprint simulation for HTTP clients.
package tlsfingerprint
import (
"log/slog"
"sort"
"sync"
"github.com/Wei-Shaw/sub2api/internal/config"
)
// DefaultProfileName is the name of the built-in Claude CLI profile.
const DefaultProfileName = "claude_cli_v2"
// Registry manages TLS fingerprint profiles.
// It holds a collection of profiles that can be used for TLS fingerprint simulation.
// Profiles are selected based on account ID using modulo operation.
type Registry struct {
mu sync.RWMutex
profiles map[string]*Profile
profileNames []string // Sorted list of profile names for deterministic selection
}
// NewRegistry creates a new TLS fingerprint profile registry.
// It initializes with the built-in default profile.
func NewRegistry() *Registry {
r := &Registry{
profiles: make(map[string]*Profile),
profileNames: make([]string, 0),
}
// Register the built-in default profile
r.registerBuiltinProfile()
return r
}
// NewRegistryFromConfig creates a new registry and loads profiles from config.
// If the config has custom profiles defined, they will be merged with the built-in default.
func NewRegistryFromConfig(cfg *config.TLSFingerprintConfig) *Registry {
r := NewRegistry()
if cfg == nil || !cfg.Enabled {
slog.Debug("tls_registry_disabled", "reason", "disabled or no config")
return r
}
// Load custom profiles from config
for name, profileCfg := range cfg.Profiles {
profile := &Profile{
Name: profileCfg.Name,
EnableGREASE: profileCfg.EnableGREASE,
CipherSuites: profileCfg.CipherSuites,
Curves: profileCfg.Curves,
PointFormats: profileCfg.PointFormats,
}
// If the profile has empty values, they will use defaults in dialer
r.RegisterProfile(name, profile)
slog.Debug("tls_registry_loaded_profile", "key", name, "name", profileCfg.Name)
}
slog.Debug("tls_registry_initialized", "profile_count", len(r.profileNames), "profiles", r.profileNames)
return r
}
// registerBuiltinProfile adds the default Claude CLI profile to the registry.
func (r *Registry) registerBuiltinProfile() {
defaultProfile := &Profile{
Name: "Claude CLI 2.x (Node.js 20.x + OpenSSL 3.x)",
EnableGREASE: false, // Node.js does not use GREASE
// Empty slices will cause dialer to use built-in defaults
CipherSuites: nil,
Curves: nil,
PointFormats: nil,
}
r.RegisterProfile(DefaultProfileName, defaultProfile)
}
// RegisterProfile adds or updates a profile in the registry.
func (r *Registry) RegisterProfile(name string, profile *Profile) {
r.mu.Lock()
defer r.mu.Unlock()
// Check if this is a new profile
_, exists := r.profiles[name]
r.profiles[name] = profile
if !exists {
r.profileNames = append(r.profileNames, name)
// Keep names sorted for deterministic selection
sort.Strings(r.profileNames)
}
}
// GetProfile returns a profile by name.
// Returns nil if the profile does not exist.
func (r *Registry) GetProfile(name string) *Profile {
r.mu.RLock()
defer r.mu.RUnlock()
return r.profiles[name]
}
// GetDefaultProfile returns the built-in default profile.
func (r *Registry) GetDefaultProfile() *Profile {
return r.GetProfile(DefaultProfileName)
}
// GetProfileByAccountID returns a profile for the given account ID.
// The profile is selected using: profileNames[accountID % len(profiles)]
// This ensures deterministic profile assignment for each account.
func (r *Registry) GetProfileByAccountID(accountID int64) *Profile {
r.mu.RLock()
defer r.mu.RUnlock()
if len(r.profileNames) == 0 {
return nil
}
// Use modulo to select profile index
// Use absolute value to handle negative IDs (though unlikely)
idx := accountID
if idx < 0 {
idx = -idx
}
selectedIndex := int(idx % int64(len(r.profileNames)))
selectedName := r.profileNames[selectedIndex]
return r.profiles[selectedName]
}
// ProfileCount returns the number of registered profiles.
func (r *Registry) ProfileCount() int {
r.mu.RLock()
defer r.mu.RUnlock()
return len(r.profiles)
}
// ProfileNames returns a sorted list of all registered profile names.
func (r *Registry) ProfileNames() []string {
r.mu.RLock()
defer r.mu.RUnlock()
// Return a copy to prevent modification
names := make([]string, len(r.profileNames))
copy(names, r.profileNames)
return names
}
// Global registry instance for convenience
var globalRegistry *Registry
var globalRegistryOnce sync.Once
// GlobalRegistry returns the global TLS fingerprint registry.
// The registry is lazily initialized with the default profile.
func GlobalRegistry() *Registry {
globalRegistryOnce.Do(func() {
globalRegistry = NewRegistry()
})
return globalRegistry
}
// InitGlobalRegistry initializes the global registry with configuration.
// This should be called during application startup.
// It is safe to call multiple times; subsequent calls will update the registry.
func InitGlobalRegistry(cfg *config.TLSFingerprintConfig) *Registry {
globalRegistryOnce.Do(func() {
globalRegistry = NewRegistryFromConfig(cfg)
})
return globalRegistry
}

243
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/tlsfingerprint/registry_test.go Normal file
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package tlsfingerprint
import (
"testing"
"github.com/Wei-Shaw/sub2api/internal/config"
)
func TestNewRegistry(t *testing.T) {
r := NewRegistry()
// Should have exactly one profile (the default)
if r.ProfileCount() != 1 {
t.Errorf("expected 1 profile, got %d", r.ProfileCount())
}
// Should have the default profile
profile := r.GetDefaultProfile()
if profile == nil {
t.Error("expected default profile to exist")
}
// Default profile name should be in the list
names := r.ProfileNames()
if len(names) != 1 || names[0] != DefaultProfileName {
t.Errorf("expected profile names to be [%s], got %v", DefaultProfileName, names)
}
}
func TestRegisterProfile(t *testing.T) {
r := NewRegistry()
// Register a new profile
customProfile := &Profile{
Name: "Custom Profile",
EnableGREASE: true,
}
r.RegisterProfile("custom", customProfile)
// Should now have 2 profiles
if r.ProfileCount() != 2 {
t.Errorf("expected 2 profiles, got %d", r.ProfileCount())
}
// Should be able to retrieve the custom profile
retrieved := r.GetProfile("custom")
if retrieved == nil {
t.Fatal("expected custom profile to exist")
}
if retrieved.Name != "Custom Profile" {
t.Errorf("expected profile name 'Custom Profile', got '%s'", retrieved.Name)
}
if !retrieved.EnableGREASE {
t.Error("expected EnableGREASE to be true")
}
}
func TestGetProfile(t *testing.T) {
r := NewRegistry()
// Get existing profile
profile := r.GetProfile(DefaultProfileName)
if profile == nil {
t.Error("expected default profile to exist")
}
// Get non-existing profile
nonExistent := r.GetProfile("nonexistent")
if nonExistent != nil {
t.Error("expected nil for non-existent profile")
}
}
func TestGetProfileByAccountID(t *testing.T) {
r := NewRegistry()
// With only default profile, all account IDs should return the same profile
for i := int64(0); i < 10; i++ {
profile := r.GetProfileByAccountID(i)
if profile == nil {
t.Errorf("expected profile for account %d, got nil", i)
}
}
// Add more profiles
r.RegisterProfile("profile_a", &Profile{Name: "Profile A"})
r.RegisterProfile("profile_b", &Profile{Name: "Profile B"})
// Now we have 3 profiles: claude_cli_v2, profile_a, profile_b
// Names are sorted, so order is: claude_cli_v2, profile_a, profile_b
expectedOrder := []string{DefaultProfileName, "profile_a", "profile_b"}
names := r.ProfileNames()
for i, name := range expectedOrder {
if names[i] != name {
t.Errorf("expected name at index %d to be %s, got %s", i, name, names[i])
}
}
// Test modulo selection
// Account ID 0 % 3 = 0 -> claude_cli_v2
// Account ID 1 % 3 = 1 -> profile_a
// Account ID 2 % 3 = 2 -> profile_b
// Account ID 3 % 3 = 0 -> claude_cli_v2
testCases := []struct {
accountID int64
expectedName string
}{
{0, "Claude CLI 2.x (Node.js 20.x + OpenSSL 3.x)"},
{1, "Profile A"},
{2, "Profile B"},
{3, "Claude CLI 2.x (Node.js 20.x + OpenSSL 3.x)"},
{4, "Profile A"},
{5, "Profile B"},
{100, "Profile A"}, // 100 % 3 = 1
{-1, "Profile A"}, // |-1| % 3 = 1
{-3, "Claude CLI 2.x (Node.js 20.x + OpenSSL 3.x)"}, // |-3| % 3 = 0
}
for _, tc := range testCases {
profile := r.GetProfileByAccountID(tc.accountID)
if profile == nil {
t.Errorf("expected profile for account %d, got nil", tc.accountID)
continue
}
if profile.Name != tc.expectedName {
t.Errorf("account %d: expected profile name '%s', got '%s'", tc.accountID, tc.expectedName, profile.Name)
}
}
}
func TestNewRegistryFromConfig(t *testing.T) {
// Test with nil config
r := NewRegistryFromConfig(nil)
if r.ProfileCount() != 1 {
t.Errorf("expected 1 profile with nil config, got %d", r.ProfileCount())
}
// Test with disabled config
disabledCfg := &config.TLSFingerprintConfig{
Enabled: false,
}
r = NewRegistryFromConfig(disabledCfg)
if r.ProfileCount() != 1 {
t.Errorf("expected 1 profile with disabled config, got %d", r.ProfileCount())
}
// Test with enabled config and custom profiles
enabledCfg := &config.TLSFingerprintConfig{
Enabled: true,
Profiles: map[string]config.TLSProfileConfig{
"custom1": {
Name: "Custom Profile 1",
EnableGREASE: true,
},
"custom2": {
Name: "Custom Profile 2",
EnableGREASE: false,
},
},
}
r = NewRegistryFromConfig(enabledCfg)
// Should have 3 profiles: default + 2 custom
if r.ProfileCount() != 3 {
t.Errorf("expected 3 profiles, got %d", r.ProfileCount())
}
// Check custom profiles exist
custom1 := r.GetProfile("custom1")
if custom1 == nil || custom1.Name != "Custom Profile 1" {
t.Error("expected custom1 profile to exist with correct name")
}
custom2 := r.GetProfile("custom2")
if custom2 == nil || custom2.Name != "Custom Profile 2" {
t.Error("expected custom2 profile to exist with correct name")
}
}
func TestProfileNames(t *testing.T) {
r := NewRegistry()
// Add profiles in non-alphabetical order
r.RegisterProfile("zebra", &Profile{Name: "Zebra"})
r.RegisterProfile("alpha", &Profile{Name: "Alpha"})
r.RegisterProfile("beta", &Profile{Name: "Beta"})
names := r.ProfileNames()
// Should be sorted alphabetically
expected := []string{"alpha", "beta", DefaultProfileName, "zebra"}
if len(names) != len(expected) {
t.Errorf("expected %d names, got %d", len(expected), len(names))
}
for i, name := range expected {
if names[i] != name {
t.Errorf("expected name at index %d to be %s, got %s", i, name, names[i])
}
}
// Test that returned slice is a copy (modifying it shouldn't affect registry)
names[0] = "modified"
originalNames := r.ProfileNames()
if originalNames[0] == "modified" {
t.Error("modifying returned slice should not affect registry")
}
}
func TestConcurrentAccess(t *testing.T) {
r := NewRegistry()
// Run concurrent reads and writes
done := make(chan bool)
// Writers
for i := 0; i < 10; i++ {
go func(id int) {
for j := 0; j < 100; j++ {
r.RegisterProfile("concurrent"+string(rune('0'+id)), &Profile{Name: "Concurrent"})
}
done <- true
}(i)
}
// Readers
for i := 0; i < 10; i++ {
go func(id int) {
for j := 0; j < 100; j++ {
_ = r.ProfileCount()
_ = r.ProfileNames()
_ = r.GetProfileByAccountID(int64(id * j))
_ = r.GetProfile(DefaultProfileName)
}
done <- true
}(i)
}
// Wait for all goroutines
for i := 0; i < 20; i++ {
<-done
}
// Test should pass without data races (run with -race flag)
}

20
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/tlsfingerprint/test_types_test.go Normal file
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package tlsfingerprint
// FingerprintResponse represents the response from tls.peet.ws/api/all.
// 共享测试类型，供 unit 和 integration 测试文件使用。
type FingerprintResponse struct {
IP string `json:"ip"`
TLS TLSInfo `json:"tls"`
HTTP2 any `json:"http2"`
}
// TLSInfo contains TLS fingerprint details.
type TLSInfo struct {
JA3 string `json:"ja3"`
JA3Hash string `json:"ja3_hash"`
JA4 string `json:"ja4"`
PeetPrint string `json:"peetprint"`
PeetPrintHash string `json:"peetprint_hash"`
ClientRandom string `json:"client_random"`
SessionID string `json:"session_id"`
}

14
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/usagestats/account_stats.go Normal file
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package usagestats
// AccountStats 账号使用统计
//
// cost: 账号口径费用（使用 total_cost * account_rate_multiplier）
// standard_cost: 标准费用（使用 total_cost，不含倍率）
// user_cost: 用户/API Key 口径费用（使用 actual_cost，受分组倍率影响）
type AccountStats struct {
Requests int64 `json:"requests"`
Tokens int64 `json:"tokens"`
Cost float64 `json:"cost"`
StandardCost float64 `json:"standard_cost"`
UserCost float64 `json:"user_cost"`
}

276
llm-gateway-competitors/sub2api-tar/backend/internal/pkg/usagestats/usage_log_types.go Normal file
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// Package usagestats provides types for usage statistics and reporting.
package usagestats
import "time"
// DashboardStats 仪表盘统计
type DashboardStats struct {
// 用户统计
TotalUsers int64 `json:"total_users"`
TodayNewUsers int64 `json:"today_new_users"` // 今日新增用户数
ActiveUsers int64 `json:"active_users"` // 今日有请求的用户数
// 小时活跃用户数（UTC 当前小时）
HourlyActiveUsers int64 `json:"hourly_active_users"`
// 预聚合新鲜度
StatsUpdatedAt string `json:"stats_updated_at"`
StatsStale bool `json:"stats_stale"`
// API Key 统计
TotalAPIKeys int64 `json:"total_api_keys"`
ActiveAPIKeys int64 `json:"active_api_keys"` // 状态为 active 的 API Key 数
// 账户统计
TotalAccounts int64 `json:"total_accounts"`
NormalAccounts int64 `json:"normal_accounts"` // 正常账户数 (schedulable=true, status=active)
ErrorAccounts int64 `json:"error_accounts"` // 异常账户数 (status=error)
RateLimitAccounts int64 `json:"ratelimit_accounts"` // 限流账户数
OverloadAccounts int64 `json:"overload_accounts"` // 过载账户数
// 累计 Token 使用统计
TotalRequests int64 `json:"total_requests"`
TotalInputTokens int64 `json:"total_input_tokens"`
TotalOutputTokens int64 `json:"total_output_tokens"`
TotalCacheCreationTokens int64 `json:"total_cache_creation_tokens"`
TotalCacheReadTokens int64 `json:"total_cache_read_tokens"`
TotalTokens int64 `json:"total_tokens"`
TotalCost float64 `json:"total_cost"` // 累计标准计费
TotalActualCost float64 `json:"total_actual_cost"` // 累计实际扣除
// 今日 Token 使用统计
TodayRequests int64 `json:"today_requests"`
TodayInputTokens int64 `json:"today_input_tokens"`
TodayOutputTokens int64 `json:"today_output_tokens"`
TodayCacheCreationTokens int64 `json:"today_cache_creation_tokens"`
TodayCacheReadTokens int64 `json:"today_cache_read_tokens"`
TodayTokens int64 `json:"today_tokens"`
TodayCost float64 `json:"today_cost"` // 今日标准计费
TodayActualCost float64 `json:"today_actual_cost"` // 今日实际扣除
// 系统运行统计
AverageDurationMs float64 `json:"average_duration_ms"` // 平均响应时间
// 性能指标
Rpm int64 `json:"rpm"` // 近5分钟平均每分钟请求数
Tpm int64 `json:"tpm"` // 近5分钟平均每分钟Token数
}
// TrendDataPoint represents a single point in trend data
type TrendDataPoint struct {
Date string `json:"date"`
Requests int64 `json:"requests"`
InputTokens int64 `json:"input_tokens"`
OutputTokens int64 `json:"output_tokens"`
CacheCreationTokens int64 `json:"cache_creation_tokens"`
CacheReadTokens int64 `json:"cache_read_tokens"`
TotalTokens int64 `json:"total_tokens"`
Cost float64 `json:"cost"` // 标准计费
ActualCost float64 `json:"actual_cost"` // 实际扣除
}
// ModelStat represents usage statistics for a single model
type ModelStat struct {
Model string `json:"model"`
Requests int64 `json:"requests"`
InputTokens int64 `json:"input_tokens"`
OutputTokens int64 `json:"output_tokens"`
CacheCreationTokens int64 `json:"cache_creation_tokens"`
CacheReadTokens int64 `json:"cache_read_tokens"`
TotalTokens int64 `json:"total_tokens"`
Cost float64 `json:"cost"` // 标准计费
ActualCost float64 `json:"actual_cost"` // 实际扣除
}
// EndpointStat represents usage statistics for a single request endpoint.
type EndpointStat struct {
Endpoint string `json:"endpoint"`
Requests int64 `json:"requests"`
TotalTokens int64 `json:"total_tokens"`
Cost float64 `json:"cost"` // 标准计费
ActualCost float64 `json:"actual_cost"` // 实际扣除
}
// GroupStat represents usage statistics for a single group
type GroupStat struct {
GroupID int64 `json:"group_id"`
GroupName string `json:"group_name"`
Requests int64 `json:"requests"`
TotalTokens int64 `json:"total_tokens"`
Cost float64 `json:"cost"` // 标准计费
ActualCost float64 `json:"actual_cost"` // 实际扣除
}
// UserUsageTrendPoint represents user usage trend data point
type UserUsageTrendPoint struct {
Date string `json:"date"`
UserID int64 `json:"user_id"`
Email string `json:"email"`
Username string `json:"username"`
Requests int64 `json:"requests"`
Tokens int64 `json:"tokens"`
Cost float64 `json:"cost"` // 标准计费
ActualCost float64 `json:"actual_cost"` // 实际扣除
}
// UserSpendingRankingItem represents a user spending ranking row.
type UserSpendingRankingItem struct {
UserID int64 `json:"user_id"`
Email string `json:"email"`
ActualCost float64 `json:"actual_cost"` // 实际扣除
Requests int64 `json:"requests"`
Tokens int64 `json:"tokens"`
}
// UserSpendingRankingResponse represents ranking rows plus total spend for the time range.
type UserSpendingRankingResponse struct {
Ranking []UserSpendingRankingItem `json:"ranking"`
TotalActualCost float64 `json:"total_actual_cost"`
TotalRequests int64 `json:"total_requests"`
TotalTokens int64 `json:"total_tokens"`
}
// APIKeyUsageTrendPoint represents API key usage trend data point
type APIKeyUsageTrendPoint struct {
Date string `json:"date"`
APIKeyID int64 `json:"api_key_id"`
KeyName string `json:"key_name"`
Requests int64 `json:"requests"`
Tokens int64 `json:"tokens"`
}
// UserDashboardStats 用户仪表盘统计
type UserDashboardStats struct {
// API Key 统计
TotalAPIKeys int64 `json:"total_api_keys"`
ActiveAPIKeys int64 `json:"active_api_keys"`
// 累计 Token 使用统计
TotalRequests int64 `json:"total_requests"`
TotalInputTokens int64 `json:"total_input_tokens"`
TotalOutputTokens int64 `json:"total_output_tokens"`
TotalCacheCreationTokens int64 `json:"total_cache_creation_tokens"`
TotalCacheReadTokens int64 `json:"total_cache_read_tokens"`
TotalTokens int64 `json:"total_tokens"`
TotalCost float64 `json:"total_cost"` // 累计标准计费
TotalActualCost float64 `json:"total_actual_cost"` // 累计实际扣除
// 今日 Token 使用统计
TodayRequests int64 `json:"today_requests"`
TodayInputTokens int64 `json:"today_input_tokens"`
TodayOutputTokens int64 `json:"today_output_tokens"`
TodayCacheCreationTokens int64 `json:"today_cache_creation_tokens"`
TodayCacheReadTokens int64 `json:"today_cache_read_tokens"`
TodayTokens int64 `json:"today_tokens"`
TodayCost float64 `json:"today_cost"` // 今日标准计费
TodayActualCost float64 `json:"today_actual_cost"` // 今日实际扣除
// 性能统计
AverageDurationMs float64 `json:"average_duration_ms"`
// 性能指标
Rpm int64 `json:"rpm"` // 近5分钟平均每分钟请求数
Tpm int64 `json:"tpm"` // 近5分钟平均每分钟Token数
}
// UsageLogFilters represents filters for usage log queries
type UsageLogFilters struct {
UserID int64
APIKeyID int64
AccountID int64
GroupID int64
Model string
RequestType *int16
Stream *bool
BillingType *int8
StartTime *time.Time
EndTime *time.Time
// ExactTotal requests exact COUNT(*) for pagination. Default false for fast large-table paging.
ExactTotal bool
}
// UsageStats represents usage statistics
type UsageStats struct {
TotalRequests int64 `json:"total_requests"`
TotalInputTokens int64 `json:"total_input_tokens"`
TotalOutputTokens int64 `json:"total_output_tokens"`
TotalCacheTokens int64 `json:"total_cache_tokens"`
TotalTokens int64 `json:"total_tokens"`
TotalCost float64 `json:"total_cost"`
TotalActualCost float64 `json:"total_actual_cost"`
TotalAccountCost *float64 `json:"total_account_cost,omitempty"`
AverageDurationMs float64 `json:"average_duration_ms"`
Endpoints []EndpointStat `json:"endpoints,omitempty"`
UpstreamEndpoints []EndpointStat `json:"upstream_endpoints,omitempty"`
EndpointPaths []EndpointStat `json:"endpoint_paths,omitempty"`
}
// BatchUserUsageStats represents usage stats for a single user
type BatchUserUsageStats struct {
UserID int64 `json:"user_id"`
TodayActualCost float64 `json:"today_actual_cost"`
TotalActualCost float64 `json:"total_actual_cost"`
}
// BatchAPIKeyUsageStats represents usage stats for a single API key
type BatchAPIKeyUsageStats struct {
APIKeyID int64 `json:"api_key_id"`
TodayActualCost float64 `json:"today_actual_cost"`
TotalActualCost float64 `json:"total_actual_cost"`
}
// AccountUsageHistory represents daily usage history for an account
type AccountUsageHistory struct {
Date string `json:"date"`
Label string `json:"label"`
Requests int64 `json:"requests"`
Tokens int64 `json:"tokens"`
Cost float64 `json:"cost"` // 标准计费（total_cost）
ActualCost float64 `json:"actual_cost"` // 账号口径费用（total_cost * account_rate_multiplier）
UserCost float64 `json:"user_cost"` // 用户口径费用（actual_cost，受分组倍率影响）
}
// AccountUsageSummary represents summary statistics for an account
type AccountUsageSummary struct {
Days int `json:"days"`
ActualDaysUsed int `json:"actual_days_used"`
TotalCost float64 `json:"total_cost"` // 账号口径费用
TotalUserCost float64 `json:"total_user_cost"` // 用户口径费用
TotalStandardCost float64 `json:"total_standard_cost"`
TotalRequests int64 `json:"total_requests"`
TotalTokens int64 `json:"total_tokens"`
AvgDailyCost float64 `json:"avg_daily_cost"` // 账号口径日均
AvgDailyUserCost float64 `json:"avg_daily_user_cost"`
AvgDailyRequests float64 `json:"avg_daily_requests"`
AvgDailyTokens float64 `json:"avg_daily_tokens"`
AvgDurationMs float64 `json:"avg_duration_ms"`
Today *struct {
Date string `json:"date"`
Cost float64 `json:"cost"`
UserCost float64 `json:"user_cost"`
Requests int64 `json:"requests"`
Tokens int64 `json:"tokens"`
} `json:"today"`
HighestCostDay *struct {
Date string `json:"date"`
Label string `json:"label"`
Cost float64 `json:"cost"`
UserCost float64 `json:"user_cost"`
Requests int64 `json:"requests"`
} `json:"highest_cost_day"`
HighestRequestDay *struct {
Date string `json:"date"`
Label string `json:"label"`
Requests int64 `json:"requests"`
Cost float64 `json:"cost"`
UserCost float64 `json:"user_cost"`
} `json:"highest_request_day"`
}
// AccountUsageStatsResponse represents the full usage statistics response for an account
type AccountUsageStatsResponse struct {
History []AccountUsageHistory `json:"history"`
Summary AccountUsageSummary `json:"summary"`
Models []ModelStat `json:"models"`
Endpoints []EndpointStat `json:"endpoints"`
UpstreamEndpoints []EndpointStat `json:"upstream_endpoints"`
}