feat: add a new TLS client with browser fingerprinting and implement Codex API authentication.

backend/internal/auth/codex_api.go

@@ -2,24 +2,18 @@ package auth
 
 import (
 	"bytes"
-	"context"
-	"crypto/tls"
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
 	"io"
 	"math/rand"
-	"net"
 	"net/http"
-	"net/http/cookiejar"
 	"net/url"
 	"strings"
 	"time"
 
+	"codex-pool/internal/client"
 	"codex-pool/internal/mail"
-
-	utls "github.com/refraction-networking/utls"
-	"golang.org/x/net/http2"
 )
 
 func init() {
@@ -36,7 +30,7 @@ var UseFixedAuthURL = false
 
 // CodexAPIAuth 纯 API 授权 (无浏览器) - 基于 get_code.go 的实现
 type CodexAPIAuth struct {
-	client        *http.Client
+	tlsClient     *client.TLSClient
 	email         string
 	password      string
 	workspaceID   string
@@ -47,130 +41,29 @@ type CodexAPIAuth struct {
 	sentinelToken string
 	solvedPow     string
 	userAgent     string
+	secChUa       string
+	secChPlatform string
 	proxyURL      string
 	logger        *AuthLogger
 }
 
-// utlsRoundTripper - 模拟 Chrome TLS 指纹
-type utlsRoundTripper struct {
-	proxyURL *url.URL
-}
-
-func (rt *utlsRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
-	var conn net.Conn
-	var err error
-
-	targetHost := req.URL.Host
-	if !strings.Contains(targetHost, ":") {
-		if req.URL.Scheme == "https" {
-			targetHost += ":443"
-		} else {
-			targetHost += ":80"
-		}
-	}
-
-	// 通过代理连接
-	if rt.proxyURL != nil {
-		proxyHost := rt.proxyURL.Host
-		conn, err = net.DialTimeout("tcp", proxyHost, 30*time.Second)
-		if err != nil {
-			return nil, fmt.Errorf("proxy dial error: %w", err)
-		}
-
-		// 构建 CONNECT 请求，支持代理认证
-		connectReq := fmt.Sprintf("CONNECT %s HTTP/1.1\r\nHost: %s\r\n", targetHost, targetHost)
-
-		// 添加代理认证头
-		if rt.proxyURL.User != nil {
-			username := rt.proxyURL.User.Username()
-			password, _ := rt.proxyURL.User.Password()
-			auth := base64.StdEncoding.EncodeToString([]byte(username + ":" + password))
-			connectReq += fmt.Sprintf("Proxy-Authorization: Basic %s\r\n", auth)
-		}
-		connectReq += "\r\n"
-
-		_, err = conn.Write([]byte(connectReq))
-		if err != nil {
-			conn.Close()
-			return nil, fmt.Errorf("proxy connect write error: %w", err)
-		}
-
-		// 读取代理响应
-		buf := make([]byte, 4096)
-		n, err := conn.Read(buf)
-		if err != nil {
-			conn.Close()
-			return nil, fmt.Errorf("proxy connect read error: %w", err)
-		}
-		response := string(buf[:n])
-		if !strings.Contains(response, "200") {
-			conn.Close()
-			return nil, fmt.Errorf("proxy connect failed: %s", response)
-		}
-	} else {
-		conn, err = net.DialTimeout("tcp", targetHost, 30*time.Second)
-		if err != nil {
-			return nil, fmt.Errorf("dial error: %w", err)
-		}
-	}
-
-	// 使用 uTLS 进行 TLS 握手，模拟 Chrome
-	tlsConn := utls.UClient(conn, &utls.Config{
-		ServerName:         req.URL.Hostname(),
-		InsecureSkipVerify: true,
-	}, utls.HelloChrome_Auto)
-
-	err = tlsConn.Handshake()
-	if err != nil {
-		conn.Close()
-		return nil, fmt.Errorf("tls handshake error: %w", err)
-	}
-
-	// 使用 HTTP/2 或 HTTP/1.1
-	alpn := tlsConn.ConnectionState().NegotiatedProtocol
-	if alpn == "h2" {
-		// HTTP/2
-		t2 := &http2.Transport{
-			DialTLSContext: func(ctx context.Context, network, addr string, cfg *tls.Config) (net.Conn, error) {
-				return tlsConn, nil
-			},
-		}
-		return t2.RoundTrip(req)
-	}
-
-	// HTTP/1.1
-	t1 := &http.Transport{
-		DialTLSContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
-			return tlsConn, nil
-		},
-	}
-	return t1.RoundTrip(req)
-}
-
-// NewCodexAPIAuth 创建 CodexAuth 实例
+// NewCodexAPIAuth 创建 CodexAuth 实例（使用随机 TLS 指纹）
 // authURL 和 sessionID 由 S2A 生成
 func NewCodexAPIAuth(email, password, workspaceID, authURL, sessionID, proxy string, logger *AuthLogger) (*CodexAPIAuth, error) {
-	var proxyURL *url.URL
-	if proxy != "" {
-		var err error
-		proxyURL, err = url.Parse(proxy)
+	tlsClient, err := client.New(proxy)
 	if err != nil {
-			return nil, fmt.Errorf("解析代理地址失败: %v", err)
-		}
+		return nil, fmt.Errorf("创建 TLS 客户端失败: %v", err)
 	}
 
-	jar, _ := cookiejar.New(nil)
-	client := &http.Client{
-		Transport: &utlsRoundTripper{proxyURL: proxyURL},
-		Jar:       jar,
-		CheckRedirect: func(req *http.Request, via []*http.Request) error {
-			return http.ErrUseLastResponse // 禁用自动重定向，手动跟随
-		},
-		Timeout: 30 * time.Second,
+	fpInfo := tlsClient.GetFingerprintInfo()
+	ua, secChUa, secChPlatform := tlsClient.GetHeadersInfo()
+
+	if logger != nil {
+		logger.LogStep(StepBrowserStart, "指纹: %s", fpInfo)
 	}
 
 	return &CodexAPIAuth{
-		client:      client,
+		tlsClient:     tlsClient,
 		email:         email,
 		password:      password,
 		workspaceID:   workspaceID,
@@ -178,7 +71,9 @@ func NewCodexAPIAuth(email, password, workspaceID, authURL, sessionID, proxy str
 		sessionID:     sessionID,
 		deviceID:      generateUUID(),
 		sid:           generateUUID(),
-		userAgent:   "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36",
+		userAgent:     ua,
+		secChUa:       secChUa,
+		secChPlatform: secChPlatform,
 		proxyURL:      proxy,
 		logger:        logger,
 	}, nil
@@ -278,7 +173,7 @@ func (c *CodexAPIAuth) getRequirementsToken() string {
 	return "gAAAAAC" + encoded + "~S"
 }
 
-// doRequest 执行 HTTP 请求
+// doRequest 执行 HTTP 请求（通过 TLSClient 随机指纹）
 func (c *CodexAPIAuth) doRequest(method, urlStr string, body interface{}, headers map[string]string) (*http.Response, []byte, error) {
 	var bodyReader io.Reader
 	if body != nil {
@@ -291,13 +186,17 @@ func (c *CodexAPIAuth) doRequest(method, urlStr string, body interface{}, header
 		return nil, nil, err
 	}
 
-	// 设置默认头
+	// 设置默认头（使用指纹动态生成的值）
 	req.Header.Set("User-Agent", c.userAgent)
 	req.Header.Set("Accept", "*/*")
 	req.Header.Set("Accept-Language", "en-US,en;q=0.9")
-	req.Header.Set("sec-ch-ua", `"Not(A:Brand";v="8", "Chromium";v="110", "Google Chrome";v="110"`)
+	if c.secChUa != "" {
+		req.Header.Set("sec-ch-ua", c.secChUa)
+	}
 	req.Header.Set("sec-ch-ua-mobile", "?0")
-	req.Header.Set("sec-ch-ua-platform", `"Windows"`)
+	if c.secChPlatform != "" {
+		req.Header.Set("sec-ch-ua-platform", c.secChPlatform)
+	}
 	req.Header.Set("sec-fetch-dest", "empty")
 	req.Header.Set("sec-fetch-mode", "cors")
 	req.Header.Set("sec-fetch-site", "same-origin")
@@ -306,7 +205,7 @@ func (c *CodexAPIAuth) doRequest(method, urlStr string, body interface{}, header
 		req.Header.Set(k, v)
 	}
 
-	resp, err := c.client.Do(req)
+	resp, err := c.tlsClient.Do(req)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -744,7 +643,7 @@ func min(a, b int) int {
 	return b
 }
 
-// CompleteWithCodexAPI 使用纯 API 方式完成授权
+// CompleteWithCodexAPI 使用纯 API 方式完成授权（带 403 重试换指纹机制）
 // authURL 和 sessionID 由 S2A 生成
 func CompleteWithCodexAPI(email, password, workspaceID, authURL, sessionID, proxy string, logger *AuthLogger) (string, error) {
 	if logger != nil {
@@ -755,18 +654,46 @@ func CompleteWithCodexAPI(email, password, workspaceID, authURL, sessionID, prox
 		}
 	}
 
+	// 403 重试机制 - 最多重试 3 次，每次换新指纹
+	var lastErr error
+	for retry := 0; retry < 3; retry++ {
 		auth, err := NewCodexAPIAuth(email, password, workspaceID, authURL, sessionID, proxy, logger)
 		if err != nil {
+			lastErr = err
 			if logger != nil {
 				logger.LogError(StepBrowserStart, "创建 CodexAuth 失败: %v", err)
 			}
-		return "", err
+			if retry < 2 {
+				if logger != nil {
+					logger.LogStep(StepBrowserStart, "重试 %d/3，换新指纹...", retry+1)
+				}
+				continue
+			}
+			return "", fmt.Errorf("创建 CodexAuth 失败 (已重试3次): %v", err)
 		}
 
 		code, err := auth.ObtainAuthorizationCode()
 		if err != nil {
+			auth.tlsClient.Close()
+			// 检查是否为 403 错误
+			if strings.Contains(err.Error(), "403") {
+				lastErr = err
+				if retry < 2 {
+					if logger != nil {
+						logger.LogStep(StepBrowserStart, "遇到 403，重试 %d/3，换新指纹...", retry+1)
+					}
+					time.Sleep(time.Duration(1+retry) * time.Second) // 递增延迟
+					continue
+				}
+				return "", fmt.Errorf("授权失败: %v (403 已重试3次)", err)
+			}
+			// 非 403 错误，不重试
 			return "", err
 		}
 
+		auth.tlsClient.Close()
 		return code, nil
+	}
+
+	return "", fmt.Errorf("授权失败 (已重试3次): %v", lastErr)
 }

backend/internal/client/tls.go

@@ -588,6 +588,15 @@ func (c *TLSClient) GetFingerprintInfo() string {
 	return fmt.Sprintf("%s/%s %s (%s)", typeName, fp.Browser, fp.Version, fp.Platform)
 }
 
+// GetHeadersInfo 获取指纹对应的 User-Agent、sec-ch-ua、sec-ch-ua-platform
+// 供 codex_api 等外部模块使用，确保 headers 与 TLS 指纹一致
+func (c *TLSClient) GetHeadersInfo() (userAgent, secChUa, secChPlatform string) {
+	userAgent = c.userAgent
+	secChUa = c.generateSecChUa()
+	secChPlatform = c.getPlatformHeader()
+	return
+}
+
 // Close 关闭客户端
 func (c *TLSClient) Close() {
 	if c.azureSession != nil {