feat(auth): add login brute-force protection

docs/RBAC说明.md

@@ -119,6 +119,9 @@ auth:
   # self_serve（默认）：任何人都可注册，自动建空间 + Owner 成员
   # invite_only       ：禁止公开注册，新用户必须通过 /tenants/:id/members 邀请进入
   registration_mode: self_serve
+  # 密码登录的每 IP 滑动窗口限流；默认均为 10
+  login_rate_limit_max: 10
+  login_rate_limit_window_minutes: 10
 
 audit:
   # 审计日志保留天数；每日后台清理；默认 90；置 0 关闭清理

frontend/src/api/auth/index.ts

@@ -12,6 +12,8 @@ export interface LoginRequest {
 export interface LoginResponse {
   success: boolean
   message?: string
+  status?: number
+  retryAfter?: string | number
   user?: {
     id: string
     username: string
@@ -214,7 +216,9 @@ export async function login(data: LoginRequest): Promise<LoginResponse> {
   } catch (error: any) {
     return {
       success: false,
-      message: error.message || t('error.auth.loginFailed')
+      message: error.message || t('error.auth.loginFailed'),
+      status: error.status,
+      retryAfter: error.retryAfter,
     }
   }
 }

frontend/src/i18n/locales/en-US.ts

@@ -1892,6 +1892,8 @@ export default {
     passwordMismatch: 'Entered passwords do not match',
     loginError: 'Login error, please check email or password',
     loginErrorRetry: 'Login error, please try again later',
+    loginRateLimited: 'Too many login attempts. Try again in {seconds} seconds.',
+    loginRetryCountdown: 'Try again in {seconds}s',
     registerError: 'Registration error, please try again later',
     workspaceOnboarding: {
       title: 'Choose your workspace',

frontend/src/i18n/locales/ko-KR.ts

@@ -4495,6 +4495,8 @@ export default {
     passwordMismatch: '두 비밀번호가 일치하지 않습니다',
     loginError: '로그인 오류, 이메일 또는 비밀번호를 확인해주세요',
     loginErrorRetry: '로그인 오류, 나중에 다시 시도해주세요',
+    loginRateLimited: '로그인 시도가 너무 많습니다. {seconds}초 후에 다시 시도하세요.',
+    loginRetryCountdown: '{seconds}초 후 재시도',
     registerError: '가입 오류, 나중에 다시 시도해주세요',
     workspaceOnboarding: {
       title: '작업 공간 선택',

frontend/src/i18n/locales/ru-RU.ts

@@ -4495,6 +4495,8 @@ export default {
     passwordMismatch: 'Введённые пароли не совпадают',
     loginError: 'Ошибка входа, пожалуйста, проверьте электронную почту или пароль',
     loginErrorRetry: 'Ошибка входа, пожалуйста, повторите попытку позже',
+    loginRateLimited: 'Слишком много попыток входа. Повторите через {seconds} сек.',
+    loginRetryCountdown: 'Повторите через {seconds} сек.',
     registerError: 'Ошибка регистрации, пожалуйста, повторите попытку позже',
     workspaceOnboarding: {
       title: 'Выберите рабочее пространство',

frontend/src/i18n/locales/zh-CN.ts

@@ -4497,6 +4497,8 @@ export default {
     passwordMismatch: '两次输入的密码不一致',
     loginError: '登录错误，请检查邮箱或密码',
     loginErrorRetry: '登录错误，请稍后重试',
+    loginRateLimited: '登录尝试次数过多，请在 {seconds} 秒后重试。',
+    loginRetryCountdown: '{seconds} 秒后重试',
     registerError: '注册错误，请稍后重试',
     workspaceOnboarding: {
       title: '选择你的工作空间',

frontend/src/utils/request.ts

@@ -238,9 +238,11 @@ instance.interceptors.response.use(
     } else if (typeof data === 'string') {
       errorMessage = data;
     }
+    const retryAfter = error.response.headers?.['retry-after'];
     return Promise.reject({ 
       status, 
       message: errorMessage,
+      retryAfter,
       ...(typeof data === 'object' ? data : {}) 
     });
   }

frontend/src/views/auth/Login.vue

@@ -203,18 +203,23 @@
               label-align="top">
               <t-form-item :label="$t('auth.email')" name="email">
                 <t-input v-model="formData.email" :placeholder="$t('auth.emailPlaceholder')" type="text"
-                  autocomplete="email" size="large" :disabled="loading" />
+                  autocomplete="email" size="large" :disabled="loading || loginLocked" />
               </t-form-item>
 
               <t-form-item :label="$t('auth.password')" name="password">
                 <t-input v-model="formData.password" :placeholder="$t('auth.passwordPlaceholder')" type="password"
-                  autocomplete="current-password" size="large" :disabled="loading" @enter="handleLogin" />
+                  autocomplete="current-password" size="large" :disabled="loading || loginLocked" @enter="handleLogin" />
               </t-form-item>
 
-              <t-button type="submit" theme="primary" size="large" block :loading="loading" class="submit-button">
-                {{ loading ? $t('auth.loggingIn') : $t('auth.login') }}
+              <t-button type="submit" theme="primary" size="large" block :loading="loading" :disabled="loginLocked" class="submit-button">
+                {{ loading ? $t('auth.loggingIn') : (loginLocked ? $t('auth.loginRetryCountdown', { seconds: loginRetryAfterSeconds }) : $t('auth.login')) }}
               </t-button>
 
+              <div v-if="loginLocked" class="login-rate-limit-notice" role="alert" aria-live="polite">
+                <t-icon name="time" />
+                <span>{{ $t('auth.loginRateLimited', { seconds: loginRetryAfterSeconds }) }}</span>
+              </div>
+
               <div class="register-cta" v-if="registrationEnabled">
                 <div class="register-cta__divider">
                   <span>{{ $t('auth.firstTime') }}</span>
@@ -418,6 +423,29 @@ const oidcProviderName = ref('')
 // link is visible; the actual mode is fetched from /auth/config in onMounted.
 // In invite_only mode the link/card are hidden.
 const registrationEnabled = ref(true)
+const loginRetryAfterSeconds = ref(0)
+let loginRetryTimer: ReturnType<typeof setInterval> | undefined
+const loginLocked = computed(() => loginRetryAfterSeconds.value > 0)
+
+const clearLoginRetryTimer = () => {
+  if (loginRetryTimer) {
+    clearInterval(loginRetryTimer)
+    loginRetryTimer = undefined
+  }
+}
+
+const startLoginRetryCountdown = (retryAfter: string | number | undefined) => {
+  const seconds = Number.parseInt(String(retryAfter), 10)
+  loginRetryAfterSeconds.value = Number.isFinite(seconds) && seconds > 0 ? seconds : 60
+  clearLoginRetryTimer()
+  loginRetryTimer = setInterval(() => {
+    loginRetryAfterSeconds.value -= 1
+    if (loginRetryAfterSeconds.value <= 0) {
+      loginRetryAfterSeconds.value = 0
+      clearLoginRetryTimer()
+    }
+  }, 1000)
+}
 
 // invite-link state. When the URL carries ?token=xxx we resolve it to
 // the originating tenant + role and switch the form into a "register
@@ -546,6 +574,7 @@ onMounted(() => {
 
 onBeforeUnmount(() => {
   document.removeEventListener('click', handleClickOutside)
+  clearLoginRetryTimer()
 })
 
 const persistLoginResponse = async (response: any, skipRedirect = false) => {
@@ -673,6 +702,7 @@ const acceptAndEnter = async (token: string) => {
 
 // Handle login
 const handleLogin = async () => {
+  if (loginLocked.value) return
   try {
     const valid = await formRef.value?.validate()
     if (valid !== true) return
@@ -694,6 +724,10 @@ const handleLogin = async () => {
       await persistLoginResponse(response)
       notifyLoginSuccess(response, t, tm, formatRole, roleIcon)
     } else {
+      if (response.status === 429) {
+        startLoginRetryCountdown(response.retryAfter)
+        return
+      }
       MessagePlugin.error(response.message || t('auth.loginError'))
     }
   } catch (error: any) {
@@ -1543,6 +1577,20 @@ onMounted(async () => {
   margin: 20px 0 16px 0;
 }
 
+.login-rate-limit-notice {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  margin-top: 12px;
+  padding: 10px 12px;
+  color: var(--td-error-color-7);
+  background: var(--td-error-color-1);
+  border: 1px solid var(--td-error-color-3);
+  border-radius: 6px;
+  font-size: 13px;
+  line-height: 20px;
+}
+
 .oidc-divider {
   position: relative;
   margin: 4px 0 6px;

internal/config/auth_legacy_env_test.go

@@ -103,6 +103,25 @@ func TestApplyAuthAndTenantDefaults_DefaultTenantMode(t *testing.T) {
 	})
 }
 
+func TestApplyAuthAndTenantDefaults_LoginRateLimit(t *testing.T) {
+	cfg := &Config{Auth: &AuthConfig{}}
+
+	applyAuthAndTenantDefaults(cfg)
+
+	if cfg.Auth.LoginRateLimitMax != 10 {
+		t.Fatalf("login_rate_limit_max = %d, want 10", cfg.Auth.LoginRateLimitMax)
+	}
+	if cfg.Auth.LoginRateLimitWindowMinutes != 10 {
+		t.Fatalf("login_rate_limit_window_minutes = %d, want 10", cfg.Auth.LoginRateLimitWindowMinutes)
+	}
+	if err := ValidateConfig(&Config{Auth: &AuthConfig{LoginRateLimitMax: -1}}); err == nil {
+		t.Fatal("ValidateConfig unexpectedly accepted a negative login_rate_limit_max")
+	}
+	if err := ValidateConfig(&Config{Auth: &AuthConfig{LoginRateLimitWindowMinutes: -1}}); err == nil {
+		t.Fatal("ValidateConfig unexpectedly accepted a negative login_rate_limit_window_minutes")
+	}
+}
+
 // TestApplyAuthAndTenantDefaults_CrossTenantAccess is a regression test for the
 // env-binding gap: viper.AutomaticEnv has no SetEnvPrefix, so
 // WEKNORA_TENANT_ENABLE_CROSS_TENANT_ACCESS is never bound to the nested struct

internal/config/config.go

@@ -280,6 +280,13 @@ type AuthConfig struct {
 	// tenantless creates only the identity and waits for an invitation or an
 	// explicit self-service tenant creation.
 	DefaultTenantMode string `yaml:"default_tenant_mode" json:"default_tenant_mode"`
+	// LoginRateLimitMax is the maximum number of password-login requests that
+	// one client IP may make during LoginRateLimitWindowMinutes. It is enabled by
+	// default to bound online password guessing.
+	LoginRateLimitMax int `yaml:"login_rate_limit_max" json:"login_rate_limit_max"`
+	// LoginRateLimitWindowMinutes is the rolling window for
+	// LoginRateLimitMax, expressed in whole minutes.
+	LoginRateLimitWindowMinutes int `yaml:"login_rate_limit_window_minutes" json:"login_rate_limit_window_minutes"`
 }
 
 // AuthRegistrationMode constants used by handlers and middleware.
@@ -637,6 +644,12 @@ func ValidateConfig(cfg *Config) error {
 			errs = append(errs, fmt.Sprintf("auth.default_tenant_mode must be %q or %q, got %q",
 				AuthDefaultTenantModeCreatePersonal, AuthDefaultTenantModeTenantless, tenantMode))
 		}
+		if cfg.Auth.LoginRateLimitMax < 0 {
+			errs = append(errs, "auth.login_rate_limit_max must be >= 0")
+		}
+		if cfg.Auth.LoginRateLimitWindowMinutes < 0 {
+			errs = append(errs, "auth.login_rate_limit_window_minutes must be >= 0")
+		}
 	}
 
 	if cfg.Audit != nil && cfg.Audit.RetentionDays < 0 {
@@ -850,6 +863,12 @@ func applyAuthAndTenantDefaults(cfg *Config) {
 	if strings.TrimSpace(cfg.Auth.DefaultTenantMode) == "" {
 		cfg.Auth.DefaultTenantMode = AuthDefaultTenantModeCreatePersonal
 	}
+	if cfg.Auth.LoginRateLimitMax == 0 {
+		cfg.Auth.LoginRateLimitMax = 10
+	}
+	if cfg.Auth.LoginRateLimitWindowMinutes == 0 {
+		cfg.Auth.LoginRateLimitWindowMinutes = 10
+	}
 
 	if value := strings.TrimSpace(os.Getenv("WEKNORA_TENANT_ENABLE_RBAC")); value != "" {
 		v := strings.EqualFold(value, "true")

internal/middleware/auth_login_ratelimit.go

@@ -0,0 +1,56 @@
+package middleware
+
+import (
+	"net/http"
+	"strconv"
+	"sync"
+	"time"
+
+	apperrors "github.com/Tencent/WeKnora/internal/errors"
+	"github.com/Tencent/WeKnora/internal/ratelimit"
+	"github.com/gin-gonic/gin"
+	"github.com/redis/go-redis/v9"
+)
+
+const loginRateLimitKeyPrefix = "auth:login:ratelimit:"
+
+var (
+	loginLimiterOnce sync.Once
+	loginLimiter     *ratelimit.Limiter
+)
+
+// loginRateLimiter creates one shared limiter for password logins. Redis makes
+// its sliding window effective across application instances; the limiter's
+// local fallback keeps standalone deployments protected when Redis is absent.
+func loginRateLimiter(redisClient *redis.Client, window time.Duration) *ratelimit.Limiter {
+	loginLimiterOnce.Do(func() {
+		loginLimiter = ratelimit.New(redisClient, loginRateLimitKeyPrefix, window, "")
+		stopCh := make(chan struct{})
+		go loginLimiter.StartCleanup(stopCh)
+	})
+	return loginLimiter
+}
+
+// LoginRateLimit protects POST /auth/login from online password guessing. The
+// key is the resolved client IP; Router's trusted-proxy policy prevents a
+// caller from bypassing the budget by forging X-Forwarded-For.
+func LoginRateLimit(redisClient *redis.Client, max int, window time.Duration) gin.HandlerFunc {
+	limiter := loginRateLimiter(redisClient, window)
+	retryAfter := int(window.Seconds())
+	if retryAfter < 1 {
+		retryAfter = 1
+	}
+	return func(c *gin.Context) {
+		if !limiter.Allow(c.Request.Context(), c.ClientIP(), max) {
+			c.Header("Retry-After", strconv.Itoa(retryAfter))
+			c.Error(&apperrors.AppError{
+				Code:     apperrors.ErrTooManyRequests,
+				Message:  "too many login attempts; please retry later",
+				HTTPCode: http.StatusTooManyRequests,
+			})
+			c.Abort()
+			return
+		}
+		c.Next()
+	}
+}

internal/middleware/auth_login_ratelimit_test.go

@@ -0,0 +1,33 @@
+package middleware
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/stretchr/testify/require"
+)
+
+func TestLoginRateLimitRejectsRequestsOverBudget(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	// Use a distinct max/window for this test. The package singleton is created
+	// only once, so this test owns the first construction in this package.
+	r := gin.New()
+	r.Use(ErrorHandler())
+	r.POST("/login", LoginRateLimit(nil, 2, time.Hour), func(c *gin.Context) {
+		c.Status(http.StatusNoContent)
+	})
+
+	for i := 0; i < 2; i++ {
+		w := httptest.NewRecorder()
+		r.ServeHTTP(w, httptest.NewRequest(http.MethodPost, "/login", nil))
+		require.Equal(t, http.StatusNoContent, w.Code)
+	}
+
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, httptest.NewRequest(http.MethodPost, "/login", nil))
+	require.Equal(t, http.StatusTooManyRequests, w.Code)
+	require.Equal(t, "3600", w.Header().Get("Retry-After"))
+}

internal/router/router.go

@@ -226,7 +226,7 @@ func NewRouter(params RouterParams) *gin.Engine {
 		// so that sub-groups inherit it.
 		v1.Use(rbacGuards.apiKeyAuthorizer.Middleware())
 
-		RegisterAuthRoutes(v1, params.AuthHandler, rbacGuards)
+		RegisterAuthRoutes(v1, params.AuthHandler, rbacGuards, params.RedisClient, params.Config)
 		RegisterTenantRoutes(v1, params.TenantHandler, params.TenantMemberHandler, params.TenantInvitationHandler, params.AuditLogHandler, rbacGuards)
 		RegisterMyInvitationRoutes(v1, params.TenantInvitationHandler)
 		RegisterKnowledgeBaseRoutes(v1, params.KBHandler, rbacGuards)

internal/router/routes_auth_tenant.go

@@ -2,9 +2,12 @@ package router
 
 import (
 	"net/http"
+	"time"
 
 	"github.com/gin-gonic/gin"
+	"github.com/redis/go-redis/v9"
 
+	"github.com/Tencent/WeKnora/internal/config"
 	"github.com/Tencent/WeKnora/internal/handler"
 	"github.com/Tencent/WeKnora/internal/middleware"
 	"github.com/Tencent/WeKnora/internal/types"
@@ -177,7 +180,7 @@ func RegisterMyInvitationRoutes(r *gin.RouterGroup, invitationHandler *handler.T
 }
 
 // RegisterAuthRoutes registers authentication routes
-func RegisterAuthRoutes(r *gin.RouterGroup, handler *handler.AuthHandler, g *rbacGuards) {
+func RegisterAuthRoutes(r *gin.RouterGroup, handler *handler.AuthHandler, g *rbacGuards, redisClient *redis.Client, cfg *config.Config) {
 	r.POST("/auth/register", handler.Register)
 	// Share-link surfaces are unauthenticated and accept a plaintext
 	// token from the caller; rate-limit by IP to bound brute-force /
@@ -187,7 +190,16 @@ func RegisterAuthRoutes(r *gin.RouterGroup, handler *handler.AuthHandler, g *rba
 	publicAuthRL := middleware.PublicAuthRateLimit()
 	r.POST("/auth/register-by-invite", publicAuthRL, handler.RegisterByInvite)
 	r.POST("/auth/invitations/lookup", publicAuthRL, handler.LookupInvitationByToken)
-	r.POST("/auth/login", handler.Login)
+	loginMax, loginWindow := 10, 10*time.Minute
+	if cfg != nil && cfg.Auth != nil {
+		if cfg.Auth.LoginRateLimitMax > 0 {
+			loginMax = cfg.Auth.LoginRateLimitMax
+		}
+		if cfg.Auth.LoginRateLimitWindowMinutes > 0 {
+			loginWindow = time.Duration(cfg.Auth.LoginRateLimitWindowMinutes) * time.Minute
+		}
+	}
+	r.POST("/auth/login", middleware.LoginRateLimit(redisClient, loginMax, loginWindow), handler.Login)
 	r.POST("/auth/auto-setup", handler.AutoSetup)
 	r.GET("/auth/config", handler.GetAuthConfig)
 	r.POST("/auth/switch-tenant", handler.SwitchTenant)