fix: 修复代码审核发现的安全和质量问题

安全修复（P0）：
- 移除硬编码的 OAuth client_secret（Antigravity、Gemini CLI），
  改为通过环境变量注入（ANTIGRAVITY_OAUTH_CLIENT_SECRET、
  GEMINI_CLI_OAUTH_CLIENT_SECRET）
- 新增 logredact.RedactText() 对非结构化文本做敏感信息脱敏，
  覆盖 GOCSPX-*/AIza* 令牌和常见 key=value 模式
- 日志中不再打印 org_uuid、account_uuid、email_address 等敏感值

安全修复（P1）：
- URL 验证增强：新增 ValidateHTTPURL 统一入口，支持 allowlist 和
  私网地址阻断（localhost/内网 IP）
- 代理回退安全：代理初始化失败时默认阻止直连回退，防止 IP 泄露，
  可通过 security.proxy_fallback.allow_direct_on_error 显式开启
- Gemini OAuth 配置校验：client_id 与 client_secret 必须同时
  设置或同时留空

其他改进：
- 新增 tools/secret_scan.py 密钥扫描工具和 Makefile secret-scan 目标
- 更新所有 docker-compose 和部署配置，传递 OAuth secret 环境变量
- google_one OAuth 类型使用固定 redirectURI，与 code_assist 对齐
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Makefile

-.PHONY: build build-backend build-frontend test test-backend test-frontend
+.PHONY: build build-backend build-frontend test test-backend test-frontend secret-scan
 
 # 一键编译前后端
 build: build-backend build-frontend
@@ -20,3 +20,6 @@ test-backend:
 test-frontend:
 	@pnpm --dir frontend run lint:check
 	@pnpm --dir frontend run typecheck
+
+secret-scan:
+	@python3 tools/secret_scan.py

backend/internal/config/config.go

@@ -176,6 +176,7 @@ type SecurityConfig struct {
 	URLAllowlist    URLAllowlistConfig   `mapstructure:"url_allowlist"`
 	ResponseHeaders ResponseHeaderConfig `mapstructure:"response_headers"`
 	CSP             CSPConfig            `mapstructure:"csp"`
+	ProxyFallback   ProxyFallbackConfig  `mapstructure:"proxy_fallback"`
 	ProxyProbe      ProxyProbeConfig     `mapstructure:"proxy_probe"`
 }
 
@@ -200,6 +201,12 @@ type CSPConfig struct {
 	Policy  string `mapstructure:"policy"`
 }
 
+type ProxyFallbackConfig struct {
+	// AllowDirectOnError 当代理初始化失败时是否允许回退直连。
+	// 默认 false：避免因代理配置错误导致 IP 泄露/关联。
+	AllowDirectOnError bool `mapstructure:"allow_direct_on_error"`
+}
+
 type ProxyProbeConfig struct {
 	InsecureSkipVerify bool `mapstructure:"insecure_skip_verify"` // 已禁用：禁止跳过 TLS 证书验证
 }
@@ -1047,9 +1054,20 @@ func setDefaults() {
 	viper.SetDefault("gemini.oauth.scopes", "")
 	viper.SetDefault("gemini.quota.policy", "")
 
+	// Security - proxy fallback
+	viper.SetDefault("security.proxy_fallback.allow_direct_on_error", false)
+
 }
 
 func (c *Config) Validate() error {
+	// Gemini OAuth 配置校验：client_id 与 client_secret 必须同时设置或同时留空。
+	// 留空时表示使用内置的 Gemini CLI OAuth 客户端（其 client_secret 通过环境变量注入）。
+	geminiClientID := strings.TrimSpace(c.Gemini.OAuth.ClientID)
+	geminiClientSecret := strings.TrimSpace(c.Gemini.OAuth.ClientSecret)
+	if (geminiClientID == "") != (geminiClientSecret == "") {
+		return fmt.Errorf("gemini.oauth.client_id and gemini.oauth.client_secret must be both set or both empty")
+	}
+
 	if strings.TrimSpace(c.Server.FrontendURL) != "" {
 		if err := ValidateAbsoluteHTTPURL(c.Server.FrontendURL); err != nil {
 			return fmt.Errorf("server.frontend_url invalid: %w", err)

backend/internal/pkg/antigravity/client.go

@@ -187,9 +187,14 @@ func shouldFallbackToNextURL(err error, statusCode int) bool {
 
 // 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("client_secret", clientSecret)
 	params.Set("code", code)
 	params.Set("redirect_uri", RedirectURI)
 	params.Set("grant_type", "authorization_code")
@@ -226,9 +231,14 @@ func (c *Client) ExchangeCode(ctx context.Context, code, codeVerifier string) (*
 
 // 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("client_secret", clientSecret)
 	params.Set("refresh_token", refreshToken)
 	params.Set("grant_type", "refresh_token")
 

backend/internal/pkg/antigravity/oauth.go

@@ -6,10 +6,14 @@ import (
 	"encoding/base64"
 	"encoding/hex"
 	"fmt"
+	"net/http"
 	"net/url"
+	"os"
 	"strings"
 	"sync"
 	"time"
+
+	infraerrors "github.com/Wei-Shaw/sub2api/internal/pkg/errors"
 )
 
 const (
@@ -20,7 +24,11 @@ const (
 
 	// Antigravity OAuth 客户端凭证
 	ClientID     = "1071006060591-tmhssin2h21lcre235vtolojh4g403ep.apps.googleusercontent.com"
-	ClientSecret = "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"
+	ClientSecret = ""
+
+	// AntigravityOAuthClientSecretEnv 是 Antigravity OAuth client_secret 的环境变量名。
+	// 出于安全原因，该值不得硬编码入库。
+	AntigravityOAuthClientSecretEnv = "ANTIGRAVITY_OAUTH_CLIENT_SECRET"
 
 	// 固定的 redirect_uri（用户需手动复制 code）
 	RedirectURI = "http://localhost:8085/callback"
@@ -46,6 +54,18 @@ const (
 	antigravityDailyBaseURL = "https://daily-cloudcode-pa.sandbox.googleapis.com"
 )
 
+func getClientSecret() (string, error) {
+	if v := strings.TrimSpace(ClientSecret); v != "" {
+		return v, nil
+	}
+	if v, ok := os.LookupEnv(AntigravityOAuthClientSecretEnv); ok {
+		if vv := strings.TrimSpace(v); vv != "" {
+			return vv, 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)

backend/internal/pkg/geminicli/constants.go

@@ -39,7 +39,12 @@ const (
 	// They enable the "login without creating your own OAuth client" experience, but Google may
 	// restrict which scopes are allowed for this client.
 	GeminiCLIOAuthClientID = "681255809395-oo8ft2oprdrnp9e3aqf6av3hmdib135j.apps.googleusercontent.com"
-	GeminiCLIOAuthClientSecret = "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"
+	// GeminiCLIOAuthClientSecret is intentionally not embedded in this repository.
+	// If you rely on the built-in Gemini CLI OAuth client, you MUST provide its client_secret via config/env.
+	GeminiCLIOAuthClientSecret = ""
+
+	// GeminiCLIOAuthClientSecretEnv is the environment variable name for the built-in client secret.
+	GeminiCLIOAuthClientSecretEnv = "GEMINI_CLI_OAUTH_CLIENT_SECRET"
 
 	SessionTTL = 30 * time.Minute
 

backend/internal/pkg/geminicli/oauth.go

@@ -6,10 +6,14 @@ import (
 	"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 {
@@ -164,15 +168,24 @@ func EffectiveOAuthConfig(cfg OAuthConfig, oauthType string) (OAuthConfig, error
 	}
 
 	// 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 = GeminiCLIOAuthClientSecret
+		effective.ClientSecret = secret
 	} else if effective.ClientID == "" || effective.ClientSecret == "" {
-		return OAuthConfig{}, fmt.Errorf("OAuth client not configured: please set both client_id and client_secret (or leave both empty to use the built-in Gemini CLI client)")
+		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 &&
-		effective.ClientSecret == GeminiCLIOAuthClientSecret
+	isBuiltinClient := effective.ClientID == GeminiCLIOAuthClientID
 
 	if effective.Scopes == "" {
 		// Use different default scopes based on OAuth type

backend/internal/pkg/response/response.go

@@ -7,6 +7,7 @@ import (
 	"net/http"
 
 	infraerrors "github.com/Wei-Shaw/sub2api/internal/pkg/errors"
+	"github.com/Wei-Shaw/sub2api/internal/util/logredact"
 	"github.com/gin-gonic/gin"
 )
 
@@ -78,7 +79,7 @@ func ErrorFrom(c *gin.Context, err error) bool {
 
 	// 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, err.Error())
+		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)

backend/internal/repository/github_release_service.go

@@ -18,14 +18,21 @@ type githubReleaseClient struct {
 	downloadHTTPClient *http.Client
 }
 
+type githubReleaseClientError struct {
+	err error
+}
+
 // NewGitHubReleaseClient 创建 GitHub Release 客户端
 // proxyURL 为空时直连 GitHub，支持 http/https/socks5/socks5h 协议
-func NewGitHubReleaseClient(proxyURL string) service.GitHubReleaseClient {
+func NewGitHubReleaseClient(proxyURL string, allowDirectOnProxyError bool) service.GitHubReleaseClient {
 	sharedClient, err := httpclient.GetClient(httpclient.Options{
 		Timeout:  30 * time.Second,
 		ProxyURL: proxyURL,
 	})
 	if err != nil {
+		if proxyURL != "" && !allowDirectOnProxyError {
+			return &githubReleaseClientError{err: fmt.Errorf("proxy client init failed and direct fallback is disabled; set security.proxy_fallback.allow_direct_on_error=true to allow fallback: %w", err)}
+		}
 		sharedClient = &http.Client{Timeout: 30 * time.Second}
 	}
 
@@ -35,6 +42,9 @@ func NewGitHubReleaseClient(proxyURL string) service.GitHubReleaseClient {
 		ProxyURL: proxyURL,
 	})
 	if err != nil {
+		if proxyURL != "" && !allowDirectOnProxyError {
+			return &githubReleaseClientError{err: fmt.Errorf("proxy client init failed and direct fallback is disabled; set security.proxy_fallback.allow_direct_on_error=true to allow fallback: %w", err)}
+		}
 		downloadClient = &http.Client{Timeout: 10 * time.Minute}
 	}
 
@@ -44,6 +54,18 @@ func NewGitHubReleaseClient(proxyURL string) service.GitHubReleaseClient {
 	}
 }
 
+func (c *githubReleaseClientError) FetchLatestRelease(ctx context.Context, repo string) (*service.GitHubRelease, error) {
+	return nil, c.err
+}
+
+func (c *githubReleaseClientError) DownloadFile(ctx context.Context, url, dest string, maxSize int64) error {
+	return c.err
+}
+
+func (c *githubReleaseClientError) FetchChecksumFile(ctx context.Context, url string) ([]byte, error) {
+	return nil, c.err
+}
+
 func (c *githubReleaseClient) FetchLatestRelease(ctx context.Context, repo string) (*service.GitHubRelease, error) {
 	url := fmt.Sprintf("https://api.github.com/repos/%s/releases/latest", repo)
 

backend/internal/repository/wire.go

@@ -28,7 +28,7 @@ func ProvideConcurrencyCache(rdb *redis.Client, cfg *config.Config) service.Conc
 // ProvideGitHubReleaseClient 创建 GitHub Release 客户端
 // 从配置中读取代理设置，支持国内服务器通过代理访问 GitHub
 func ProvideGitHubReleaseClient(cfg *config.Config) service.GitHubReleaseClient {
-	return NewGitHubReleaseClient(cfg.Update.ProxyURL)
+	return NewGitHubReleaseClient(cfg.Update.ProxyURL, cfg.Security.ProxyFallback.AllowDirectOnError)
 }
 
 // ProvidePricingRemoteClient 创建定价数据远程客户端

backend/internal/service/gemini_oauth_service.go

@@ -81,8 +81,7 @@ func (s *GeminiOAuthService) GetOAuthConfig() *GeminiOAuthCapabilities {
 	// AI Studio OAuth is only enabled when the operator configures a custom OAuth client.
 	clientID := strings.TrimSpace(s.cfg.Gemini.OAuth.ClientID)
 	clientSecret := strings.TrimSpace(s.cfg.Gemini.OAuth.ClientSecret)
-	enabled := clientID != "" && clientSecret != "" &&
-		(clientID != geminicli.GeminiCLIOAuthClientID || clientSecret != geminicli.GeminiCLIOAuthClientSecret)
+	enabled := clientID != "" && clientSecret != "" && clientID != geminicli.GeminiCLIOAuthClientID
 
 	return &GeminiOAuthCapabilities{
 		AIStudioOAuthEnabled: enabled,
@@ -151,8 +150,7 @@ func (s *GeminiOAuthService) GenerateAuthURL(ctx context.Context, proxyID *int64
 		return nil, err
 	}
 
-	isBuiltinClient := effectiveCfg.ClientID == geminicli.GeminiCLIOAuthClientID &&
-		effectiveCfg.ClientSecret == geminicli.GeminiCLIOAuthClientSecret
+	isBuiltinClient := effectiveCfg.ClientID == geminicli.GeminiCLIOAuthClientID
 
 	// AI Studio OAuth requires a user-provided OAuth client (built-in Gemini CLI client is scope-restricted).
 	if oauthType == "ai_studio" && isBuiltinClient {
@@ -485,15 +483,14 @@ func (s *GeminiOAuthService) ExchangeCode(ctx context.Context, input *GeminiExch
 		if err != nil {
 			return nil, err
 		}
-		isBuiltinClient := effectiveCfg.ClientID == geminicli.GeminiCLIOAuthClientID &&
-			effectiveCfg.ClientSecret == geminicli.GeminiCLIOAuthClientSecret
+		isBuiltinClient := effectiveCfg.ClientID == geminicli.GeminiCLIOAuthClientID
 		if isBuiltinClient {
 			return nil, fmt.Errorf("AI Studio OAuth requires a custom OAuth Client. Please use an AI Studio API Key account, or configure GEMINI_OAUTH_CLIENT_ID / GEMINI_OAUTH_CLIENT_SECRET and re-authorize")
 		}
 	}
 
-	// code_assist always uses the built-in client and its fixed redirect URI.
-	if oauthType == "code_assist" {
+	// code_assist/google_one always uses the built-in client and its fixed redirect URI.
+	if oauthType == "code_assist" || oauthType == "google_one" {
 		redirectURI = geminicli.GeminiCLIRedirectURI
 	}
 

backend/internal/service/oauth_service.go

@@ -217,7 +217,7 @@ func (s *OAuthService) CookieAuth(ctx context.Context, input *CookieAuthInput) (
 	// Ensure org_uuid is set (from step 1 if not from token response)
 	if tokenInfo.OrgUUID == "" && orgUUID != "" {
 		tokenInfo.OrgUUID = orgUUID
-		log.Printf("[OAuth] Set org_uuid from cookie auth: %s", orgUUID)
+		log.Printf("[OAuth] Set org_uuid from cookie auth")
 	}
 
 	return tokenInfo, nil
@@ -251,16 +251,16 @@ func (s *OAuthService) exchangeCodeForToken(ctx context.Context, code, codeVerif
 
 	if tokenResp.Organization != nil && tokenResp.Organization.UUID != "" {
 		tokenInfo.OrgUUID = tokenResp.Organization.UUID
-		log.Printf("[OAuth] Got org_uuid: %s", tokenInfo.OrgUUID)
+		log.Printf("[OAuth] Got org_uuid")
 	}
 	if tokenResp.Account != nil {
 		if tokenResp.Account.UUID != "" {
 			tokenInfo.AccountUUID = tokenResp.Account.UUID
-			log.Printf("[OAuth] Got account_uuid: %s", tokenInfo.AccountUUID)
+			log.Printf("[OAuth] Got account_uuid")
 		}
 		if tokenResp.Account.EmailAddress != "" {
 			tokenInfo.EmailAddress = tokenResp.Account.EmailAddress
-			log.Printf("[OAuth] Got email_address: %s", tokenInfo.EmailAddress)
+			log.Printf("[OAuth] Got email_address")
 		}
 	}
 

backend/internal/util/logredact/redact.go

@@ -2,6 +2,7 @@ package logredact
 
 import (
 	"encoding/json"
+	"regexp"
 	"strings"
 )
 
@@ -19,6 +20,22 @@ var defaultSensitiveKeys = map[string]struct{}{
 	"password":           {},
 }
 
+var defaultSensitiveKeyList = []string{
+	"authorization_code",
+	"code",
+	"code_verifier",
+	"access_token",
+	"refresh_token",
+	"id_token",
+	"client_secret",
+	"password",
+}
+
+var (
+	reGOCSPX = regexp.MustCompile(`GOCSPX-[0-9A-Za-z_-]{24,}`)
+	reAIza   = regexp.MustCompile(`AIza[0-9A-Za-z_-]{35}`)
+)
+
 func RedactMap(input map[string]any, extraKeys ...string) map[string]any {
 	if input == nil {
 		return map[string]any{}
@@ -48,6 +65,62 @@ func RedactJSON(raw []byte, extraKeys ...string) string {
 	return string(encoded)
 }
 
+// RedactText 对非结构化文本做轻量脱敏。
+//
+// 规则：
+// - 如果文本本身是 JSON，则按 RedactJSON 处理。
+// - 否则尝试对常见 key=value / key:"value" 片段做脱敏。
+//
+// 注意：该函数用于日志/错误信息兜底，不保证覆盖所有格式。
+func RedactText(input string, extraKeys ...string) string {
+	input = strings.TrimSpace(input)
+	if input == "" {
+		return ""
+	}
+
+	raw := []byte(input)
+	if json.Valid(raw) {
+		return RedactJSON(raw, extraKeys...)
+	}
+
+	keyAlt := buildKeyAlternation(extraKeys)
+	// JSON-like: "access_token":"..."
+	reJSONLike := regexp.MustCompile(`(?i)("(?:` + keyAlt + `)"\s*:\s*")([^"]*)(")`)
+	// Query-like: access_token=...
+	reQueryLike := regexp.MustCompile(`(?i)\b((?:` + keyAlt + `))=([^&\s]+)`)
+	// Plain: access_token: ... / access_token = ...
+	rePlain := regexp.MustCompile(`(?i)\b((?:` + keyAlt + `))\b(\s*[:=]\s*)([^,\s]+)`)
+
+	out := input
+	out = reGOCSPX.ReplaceAllString(out, "GOCSPX-***")
+	out = reAIza.ReplaceAllString(out, "AIza***")
+	out = reJSONLike.ReplaceAllString(out, `$1***$3`)
+	out = reQueryLike.ReplaceAllString(out, `$1=***`)
+	out = rePlain.ReplaceAllString(out, `$1$2***`)
+	return out
+}
+
+func buildKeyAlternation(extraKeys []string) string {
+	seen := make(map[string]struct{}, len(defaultSensitiveKeyList)+len(extraKeys))
+	keys := make([]string, 0, len(defaultSensitiveKeyList)+len(extraKeys))
+	for _, k := range defaultSensitiveKeyList {
+		seen[k] = struct{}{}
+		keys = append(keys, regexp.QuoteMeta(k))
+	}
+	for _, k := range extraKeys {
+		n := normalizeKey(k)
+		if n == "" {
+			continue
+		}
+		if _, ok := seen[n]; ok {
+			continue
+		}
+		seen[n] = struct{}{}
+		keys = append(keys, regexp.QuoteMeta(n))
+	}
+	return strings.Join(keys, "|")
+}
+
 func buildKeySet(extraKeys []string) map[string]struct{} {
 	keys := make(map[string]struct{}, len(defaultSensitiveKeys)+len(extraKeys))
 	for k := range defaultSensitiveKeys {

backend/internal/util/urlvalidator/validator.go

@@ -17,8 +17,15 @@ type ValidationOptions struct {
 	AllowPrivate     bool
 }
 
-func ValidateURLFormat(raw string, allowInsecureHTTP bool) (string, error) {
-	// 最小格式校验：仅保证 URL 可解析且 scheme 合规，不做白名单/私网/SSRF 校验
+// ValidateHTTPURL validates an outbound HTTP/HTTPS URL.
+//
+// It provides a single validation entry point that supports:
+// - scheme 校验（https 或可选允许 http）
+// - 可选 allowlist（支持 *.example.com 通配）
+// - allow_private_hosts 策略（阻断 localhost/私网字面量 IP）
+//
+// 注意：DNS Rebinding 防护（解析后 IP 校验）应在实际发起请求时执行，避免 TOCTOU。
+func ValidateHTTPURL(raw string, allowInsecureHTTP bool, opts ValidationOptions) (string, error) {
 	trimmed := strings.TrimSpace(raw)
 	if trimmed == "" {
 		return "", errors.New("url is required")
@@ -34,10 +41,13 @@ func ValidateURLFormat(raw string, allowInsecureHTTP bool) (string, error) {
 		return "", fmt.Errorf("invalid url scheme: %s", parsed.Scheme)
 	}
 
-	host := strings.TrimSpace(parsed.Hostname())
+	host := strings.ToLower(strings.TrimSpace(parsed.Hostname()))
 	if host == "" {
 		return "", errors.New("invalid host")
 	}
+	if !opts.AllowPrivate && isBlockedHost(host) {
+		return "", fmt.Errorf("host is not allowed: %s", host)
+	}
 
 	if port := parsed.Port(); port != "" {
 		num, err := strconv.Atoi(port)
@@ -46,10 +56,21 @@ func ValidateURLFormat(raw string, allowInsecureHTTP bool) (string, error) {
 		}
 	}
 
-	return strings.TrimRight(trimmed, "/"), nil
+	allowlist := normalizeAllowlist(opts.AllowedHosts)
+	if opts.RequireAllowlist && len(allowlist) == 0 {
+		return "", errors.New("allowlist is not configured")
+	}
+	if len(allowlist) > 0 && !isAllowedHost(host, allowlist) {
+		return "", fmt.Errorf("host is not allowed: %s", host)
+	}
+
+	parsed.Path = strings.TrimRight(parsed.Path, "/")
+	parsed.RawPath = ""
+	return strings.TrimRight(parsed.String(), "/"), nil
 }
 
-func ValidateHTTPSURL(raw string, opts ValidationOptions) (string, error) {
+func ValidateURLFormat(raw string, allowInsecureHTTP bool) (string, error) {
+	// 最小格式校验：仅保证 URL 可解析且 scheme 合规，不做白名单/私网/SSRF 校验
 	trimmed := strings.TrimSpace(raw)
 	if trimmed == "" {
 		return "", errors.New("url is required")
@@ -59,29 +80,29 @@ func ValidateHTTPSURL(raw string, opts ValidationOptions) (string, error) {
 	if err != nil || parsed.Scheme == "" || parsed.Host == "" {
 		return "", fmt.Errorf("invalid url: %s", trimmed)
 	}
-	if !strings.EqualFold(parsed.Scheme, "https") {
+
+	scheme := strings.ToLower(parsed.Scheme)
+	if scheme != "https" && (!allowInsecureHTTP || scheme != "http") {
 		return "", fmt.Errorf("invalid url scheme: %s", parsed.Scheme)
 	}
 
-	host := strings.ToLower(strings.TrimSpace(parsed.Hostname()))
+	host := strings.TrimSpace(parsed.Hostname())
 	if host == "" {
 		return "", errors.New("invalid host")
 	}
-	if !opts.AllowPrivate && isBlockedHost(host) {
-		return "", fmt.Errorf("host is not allowed: %s", host)
-	}
 
-	allowlist := normalizeAllowlist(opts.AllowedHosts)
-	if opts.RequireAllowlist && len(allowlist) == 0 {
-		return "", errors.New("allowlist is not configured")
+	if port := parsed.Port(); port != "" {
+		num, err := strconv.Atoi(port)
+		if err != nil || num <= 0 || num > 65535 {
+			return "", fmt.Errorf("invalid port: %s", port)
 		}
-	if len(allowlist) > 0 && !isAllowedHost(host, allowlist) {
-		return "", fmt.Errorf("host is not allowed: %s", host)
 	}
 
-	parsed.Path = strings.TrimRight(parsed.Path, "/")
-	parsed.RawPath = ""
-	return strings.TrimRight(parsed.String(), "/"), nil
+	return strings.TrimRight(trimmed, "/"), nil
+}
+
+func ValidateHTTPSURL(raw string, opts ValidationOptions) (string, error) {
+	return ValidateHTTPURL(raw, false, opts)
 }
 
 // ValidateResolvedIP 验证 DNS 解析后的 IP 地址是否安全

deploy/.env.example

@@ -161,6 +161,19 @@ TOTP_ENCRYPTION_KEY=
 # Leave unset to use default ./config.yaml
 #CONFIG_FILE=./config.yaml
 
+# -----------------------------------------------------------------------------
+# Built-in OAuth Client Secrets (Optional)
+# -----------------------------------------------------------------------------
+# SECURITY NOTE:
+# - 本项目不会在代码仓库中内置第三方 OAuth client_secret。
+# - 如需使用“内置客户端”（而不是自建 OAuth Client），请在运行环境通过 env 注入。
+#
+# Gemini CLI built-in OAuth client_secret（用于 Gemini code_assist/google_one 内置登录流）
+# GEMINI_CLI_OAUTH_CLIENT_SECRET=
+#
+# Antigravity OAuth client_secret（用于 Antigravity OAuth 登录流）
+# ANTIGRAVITY_OAUTH_CLIENT_SECRET=
+
 # -----------------------------------------------------------------------------
 # Rate Limiting (Optional)
 # 速率限制（可选）

deploy/README.md

@@ -303,6 +303,10 @@ Requires your own OAuth client credentials.
 ```bash
 GEMINI_OAUTH_CLIENT_ID=your-client-id.apps.googleusercontent.com
 GEMINI_OAUTH_CLIENT_SECRET=GOCSPX-your-client-secret
+
+# 可选：如需使用 Gemini CLI 内置 OAuth Client（Code Assist / Google One）
+# 安全说明：本仓库不会内置该 client_secret，请在运行环境通过环境变量注入。
+# GEMINI_CLI_OAUTH_CLIENT_SECRET=GOCSPX-your-built-in-secret
 ```
 
 **Step 3: Create Account in Admin UI**
@@ -430,6 +434,11 @@ If you need to use AI Studio OAuth for Gemini accounts, add the OAuth client cre
    Environment=GEMINI_OAUTH_CLIENT_SECRET=GOCSPX-your-client-secret
    ```
 
+   如需使用“内置 Gemini CLI OAuth Client”（Code Assist / Google One），还需要注入：
+   ```ini
+   Environment=GEMINI_CLI_OAUTH_CLIENT_SECRET=GOCSPX-your-built-in-secret
+   ```
+
 3. Reload and restart:
    ```bash
    sudo systemctl daemon-reload

deploy/config.example.yaml

@@ -707,10 +707,14 @@ turnstile:
 # 默认：使用 Gemini CLI 的公开 OAuth 凭证（与 Google 官方 CLI 工具相同）
 gemini:
   oauth:
-    # Gemini CLI public OAuth credentials (works for both Code Assist and AI Studio)
-    # Gemini CLI 公开 OAuth 凭证（适用于 Code Assist 和 AI Studio）
-    client_id: "681255809395-oo8ft2oprdrnp9e3aqf6av3hmdib135j.apps.googleusercontent.com"
-    client_secret: "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"
+    # OAuth 客户端配置说明：
+    # 1) 留空 client_id/client_secret：使用 Gemini CLI 内置 OAuth Client（其 client_secret 需通过环境变量注入）
+    #    - GEMINI_CLI_OAUTH_CLIENT_SECRET
+    # 2) 同时设置 client_id/client_secret：使用你自建的 OAuth Client（推荐，权限更完整）
+    #
+    # 注意：client_id 与 client_secret 必须同时为空或同时非空。
+    client_id: ""
+    client_secret: ""
     # Optional scopes (space-separated). Leave empty to auto-select based on oauth_type.
     # 可选的权限范围（空格分隔）。留空则根据 oauth_type 自动选择。
     scopes: ""

deploy/docker-compose-aicodex.yml

@@ -125,6 +125,11 @@ services:
       - GEMINI_OAUTH_SCOPES=${GEMINI_OAUTH_SCOPES:-}
       - GEMINI_QUOTA_POLICY=${GEMINI_QUOTA_POLICY:-}
 
+      # Built-in OAuth client secrets (optional)
+      # SECURITY: This repo does not embed third-party client_secret.
+      - GEMINI_CLI_OAUTH_CLIENT_SECRET=${GEMINI_CLI_OAUTH_CLIENT_SECRET:-}
+      - ANTIGRAVITY_OAUTH_CLIENT_SECRET=${ANTIGRAVITY_OAUTH_CLIENT_SECRET:-}
+
       # =======================================================================
       # Security Configuration (URL Allowlist)
       # =======================================================================

deploy/docker-compose-test.yml

@@ -104,6 +104,11 @@ services:
       - GEMINI_OAUTH_SCOPES=${GEMINI_OAUTH_SCOPES:-}
       - GEMINI_QUOTA_POLICY=${GEMINI_QUOTA_POLICY:-}
 
+      # Built-in OAuth client secrets (optional)
+      # SECURITY: This repo does not embed third-party client_secret.
+      - GEMINI_CLI_OAUTH_CLIENT_SECRET=${GEMINI_CLI_OAUTH_CLIENT_SECRET:-}
+      - ANTIGRAVITY_OAUTH_CLIENT_SECRET=${ANTIGRAVITY_OAUTH_CLIENT_SECRET:-}
+
       # =======================================================================
       # Security Configuration (URL Allowlist)
       # =======================================================================

deploy/docker-compose.local.yml

@@ -123,6 +123,11 @@ services:
       - GEMINI_OAUTH_SCOPES=${GEMINI_OAUTH_SCOPES:-}
       - GEMINI_QUOTA_POLICY=${GEMINI_QUOTA_POLICY:-}
 
+      # Built-in OAuth client secrets (optional)
+      # SECURITY: This repo does not embed third-party client_secret.
+      - GEMINI_CLI_OAUTH_CLIENT_SECRET=${GEMINI_CLI_OAUTH_CLIENT_SECRET:-}
+      - ANTIGRAVITY_OAUTH_CLIENT_SECRET=${ANTIGRAVITY_OAUTH_CLIENT_SECRET:-}
+
       # =======================================================================
       # Security Configuration (URL Allowlist)
       # =======================================================================

deploy/docker-compose.standalone.yml

@@ -88,6 +88,11 @@ services:
       - GEMINI_OAUTH_CLIENT_SECRET=${GEMINI_OAUTH_CLIENT_SECRET:-}
       - GEMINI_OAUTH_SCOPES=${GEMINI_OAUTH_SCOPES:-}
       - GEMINI_QUOTA_POLICY=${GEMINI_QUOTA_POLICY:-}
+
+      # Built-in OAuth client secrets (optional)
+      # SECURITY: This repo does not embed third-party client_secret.
+      - GEMINI_CLI_OAUTH_CLIENT_SECRET=${GEMINI_CLI_OAUTH_CLIENT_SECRET:-}
+      - ANTIGRAVITY_OAUTH_CLIENT_SECRET=${ANTIGRAVITY_OAUTH_CLIENT_SECRET:-}
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:8080/health"]
       interval: 30s