fix: P1/P2 优化 - OAuth验证 + API响应 + 缓存击穿 + Webhook关闭

P1 - OAuth auth_url origin 验证:
- 添加 validateOAuthUrl() 函数验证 OAuth URL origin
- 仅允许同源或可信 OAuth 提供商
- LoginPage 和 ProfileSecurityPage 调用前验证

P2 - API 响应运行时类型验证:
- 添加 isApiResponse() 运行时验证函数
- parseJsonResponse 验证响应结构完整性

P2 - 缓存击穿防护 (singleflight):
- AuthMiddleware.isJTIBlacklisted 使用 singleflight.Group
- 防止 L1 miss 时并发请求同时打 L2

P2 - Webhook 服务优雅关闭:
- WebhookService 添加 Shutdown() 方法
- 服务器关闭时等待 worker 完成
- main.go 集成 shutdown 调用

frontend/admin/src/lib/auth/oauth.test.ts

@@ -1,9 +1,10 @@
-import { describe, expect, it } from 'vitest'
+import { afterAll, describe, expect, it } from 'vitest'
 
 import {
   buildOAuthCallbackReturnTo,
   parseOAuthCallbackHash,
   sanitizeAuthRedirect,
+  validateOAuthUrl,
 } from './oauth'
 
 describe('oauth auth helpers', () => {
@@ -26,4 +27,40 @@ describe('oauth auth helpers', () => {
       message: '',
     })
   })
+
+  describe('validateOAuthUrl', () => {
+    const originalOrigin = window.location.origin
+
+    afterAll(() => {
+      // 恢复原始 origin
+      Object.defineProperty(window, 'location', {
+        value: { origin: originalOrigin },
+        writable: true,
+      })
+    })
+
+    it('allows same-origin URLs', () => {
+      Object.defineProperty(window, 'location', {
+        value: { origin: 'http://localhost:3000' },
+        writable: true,
+      })
+      expect(validateOAuthUrl('http://localhost:3000/api/v1/auth/oauth/authorize')).toBe(true)
+    })
+
+    it('allows trusted OAuth provider origins', () => {
+      expect(validateOAuthUrl('https://github.com/login/oauth/authorize')).toBe(true)
+      expect(validateOAuthUrl('https://google.com/oauth/authorize')).toBe(true)
+      expect(validateOAuthUrl('https://facebook.com/v1.0/oauth/authorize')).toBe(true)
+    })
+
+    it('rejects untrusted origins', () => {
+      expect(validateOAuthUrl('https://evil.example.com/oauth/authorize')).toBe(false)
+      expect(validateOAuthUrl('https://attacker.com/callback')).toBe(false)
+    })
+
+    it('rejects invalid URLs', () => {
+      expect(validateOAuthUrl('not-a-url')).toBe(false)
+      expect(validateOAuthUrl('')).toBe(false)
+    })
+  })
 })

frontend/admin/src/lib/auth/oauth.ts

@@ -6,6 +6,46 @@ export function sanitizeAuthRedirect(target: string | null | undefined, fallback
   return value
 }
 
+// 可信的 OAuth 提供商 origin 白名单
+const TRUSTED_OAUTH_ORIGINS = new Set([
+  // 社交登录提供商
+  'https://github.com',
+  'https://google.com',
+  'https://facebook.com',
+  'https://twitter.com',
+  'https://apple.com',
+  'https://weixin.qq.com',
+  'https://qq.com',
+  'https://alipay.com',
+  'https://douyin.com',
+])
+
+/**
+ * 验证 OAuth 授权 URL 的 origin 是否可信
+ * 防止开放重定向攻击
+ */
+export function validateOAuthUrl(authUrl: string): boolean {
+  try {
+    const url = new URL(authUrl)
+
+    // 允许同源（当前应用自身作为 OAuth 提供者的情况）
+    if (url.origin === window.location.origin) {
+      return true
+    }
+
+    // 检查是否在可信 origin 白名单中
+    if (TRUSTED_OAUTH_ORIGINS.has(url.origin)) {
+      return true
+    }
+
+    // 拒绝所有其他 origin
+    return false
+  } catch {
+    // 无效的 URL 格式
+    return false
+  }
+}
+
 export function buildOAuthCallbackReturnTo(redirectPath: string): string {
   const callbackUrl = new URL('/login/oauth/callback', window.location.origin)
   if (redirectPath && redirectPath !== '/dashboard') {

frontend/admin/src/lib/http/client.ts

@@ -85,7 +85,41 @@ function createTimeoutSignal(signal?: AbortSignal): { signal: AbortSignal; clean
 }
 
 async function parseJsonResponse<T>(response: Response): Promise<ApiResponse<T>> {
-  return response.json() as Promise<ApiResponse<T>>
+  const raw = await response.json()
+
+  // 运行时验证响应结构
+  if (!isApiResponse(raw)) {
+    throw new Error('Invalid API response structure: missing required fields')
+  }
+
+  return raw as ApiResponse<T>
+}
+
+/**
+ * 运行时验证 API 响应结构
+ * 防止后端返回异常格式时导致运行时错误
+ */
+function isApiResponse(obj: unknown): obj is ApiResponse<unknown> {
+  if (typeof obj !== 'object' || obj === null) {
+    return false
+  }
+
+  const r = obj as Record<string, unknown>
+
+  // 必须有 code 字段且为数字
+  if (typeof r.code !== 'number') {
+    return false
+  }
+
+  // 必须有 message 字段且为字符串
+  if (typeof r.message !== 'string') {
+    return false
+  }
+
+  // 如果有 data 字段，应该存在
+  // (data 可以是 undefined/null/任何类型，但我们允许这些值)
+
+  return true
 }
 
 async function refreshAccessToken(): Promise<TokenBundle> {

frontend/admin/src/pages/admin/ProfileSecurityPage/ProfileSecurityPage.tsx

@@ -31,7 +31,8 @@ import type { RcFile } from 'antd/es/upload'
 import dayjs from 'dayjs'
 import { useAuth } from '@/app/providers/auth-context'
 import { getErrorMessage } from '@/lib/errors'
-import { parseOAuthCallbackHash } from '@/lib/auth/oauth'
+import { parseOAuthCallbackHash, validateOAuthUrl } from '@/lib/auth/oauth'
+import { getDeviceFingerprint } from '@/lib/device-fingerprint'
 import { PageLayout, ContentCard } from '@/components/layout'
 import { PageHeader } from '@/components/common'
 import { getAuthCapabilities } from '@/services/auth'
@@ -198,6 +199,11 @@ export function ProfileSecurityPage() {
         totp_code: values.totp_code?.trim() || undefined,
       })
 
+      // 验证 OAuth URL origin 防止开放重定向攻击
+      if (!validateOAuthUrl(result.auth_url)) {
+        throw new Error('Invalid OAuth authorization URL')
+      }
+
       setBindVisible(false)
       setActiveProvider(null)
       bindSocialForm.resetFields()
@@ -306,11 +312,8 @@ export function ProfileSecurityPage() {
       // If "remember device" is checked, trust the current device
       if (totpRememberDevice) {
         try {
-          const stored = localStorage.getItem('device_fingerprint')
-          if (stored) {
-            const deviceInfo = JSON.parse(stored)
-            await trustDeviceByDeviceId(deviceInfo.device_id, '30d')
-          }
+          const deviceInfo = getDeviceFingerprint()
+          await trustDeviceByDeviceId(deviceInfo.device_id, '30d')
         } catch {
           // Non-critical: device trust failed, but TOTP was enabled
         }

frontend/admin/src/pages/auth/LoginPage/LoginPage.tsx

@@ -11,8 +11,9 @@ import {
 
 import { useAuth } from '@/app/providers/auth-context'
 import { AuthLayout } from '@/layouts'
-import { buildOAuthCallbackReturnTo, sanitizeAuthRedirect } from '@/lib/auth/oauth'
+import { buildOAuthCallbackReturnTo, sanitizeAuthRedirect, validateOAuthUrl } from '@/lib/auth/oauth'
 import { getErrorMessage, isFormValidationError } from '@/lib/errors'
+import { getDeviceFingerprint } from '@/lib/device-fingerprint'
 import {
   getAuthCapabilities,
   getOAuthAuthorizationUrl,
@@ -52,34 +53,6 @@ type SmsCodeFormValues = {
   code: string
 }
 
-// 构建设备指纹
-function buildDeviceFingerprint(): { device_id: string; device_name: string; device_browser: string; device_os: string } {
-  const ua = navigator.userAgent
-  let browser = 'Unknown'
-  let os = 'Unknown'
-
-  if (ua.includes('Chrome')) browser = 'Chrome'
-  else if (ua.includes('Firefox')) browser = 'Firefox'
-  else if (ua.includes('Safari')) browser = 'Safari'
-  else if (ua.includes('Edge')) browser = 'Edge'
-
-  if (ua.includes('Windows')) os = 'Windows'
-  else if (ua.includes('Mac')) os = 'macOS'
-  else if (ua.includes('Linux')) os = 'Linux'
-  else if (ua.includes('Android')) os = 'Android'
-  else if (ua.includes('iOS')) os = 'iOS'
-
-  // 使用随机ID作为设备唯一标识
-  const deviceId = `${browser}-${os}-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`
-
-  return {
-    device_id: deviceId,
-    device_name: `${browser} on ${os}`,
-    device_browser: browser,
-    device_os: os,
-  }
-}
-
 export function LoginPage() {
   const [activeTab, setActiveTab] = useState('password')
   const [loading, setLoading] = useState(false)
@@ -165,6 +138,10 @@ export function LoginPage() {
         provider,
         buildOAuthCallbackReturnTo(redirect),
       )
+      // 验证 OAuth URL origin 防止开放重定向攻击
+      if (!validateOAuthUrl(result.auth_url)) {
+        throw new Error('Invalid OAuth authorization URL')
+      }
       window.location.assign(result.auth_url)
     } catch (error) {
       message.error(getErrorMessage(error, '启动第三方登录失败'))
@@ -175,9 +152,7 @@ export function LoginPage() {
   const handlePasswordLogin = useCallback(async (values: LoginFormValues) => {
     setLoading(true)
     try {
-      const deviceInfo = buildDeviceFingerprint()
-      // Store device info for "remember device" feature on TOTP enable
-      localStorage.setItem('device_fingerprint', JSON.stringify(deviceInfo))
+      const deviceInfo = getDeviceFingerprint()
       const tokenBundle = await loginByPassword({
         username: values.username,
         password: values.password,