加固后台管理安全
This commit is contained in:
@@ -1,6 +1,8 @@
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package middleware
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import (
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"context"
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"net/http"
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"strings"
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"hfb_sys/backend/internal/modules/auth"
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@@ -10,18 +12,34 @@ import (
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)
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const (
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ContextUserID = "user_id"
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ContextPhone = "phone"
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ContextAdminID = "admin_id"
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ContextUsername = "username"
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ContextUserID = "user_id"
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ContextPhone = "phone"
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ContextAdminID = "admin_id"
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ContextUsername = "username"
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ContextPasswordMustChange = "password_must_change"
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AdminAccessCookieName = "hfb_admin_access"
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)
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func extractToken(c *gin.Context) string {
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type AdminTokenContext struct {
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Username string
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PasswordMustChange bool
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}
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type AdminTokenValidatorFunc func(ctx context.Context, adminID uint64, tokenVersion int64) (AdminTokenContext, error)
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func extractBearerToken(c *gin.Context) string {
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header := c.GetHeader("Authorization")
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tokenText := strings.TrimSpace(strings.TrimPrefix(header, "Bearer "))
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if tokenText != "" && tokenText != header {
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return tokenText
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}
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return ""
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}
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func extractToken(c *gin.Context) string {
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if tokenText := extractBearerToken(c); tokenText != "" {
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return tokenText
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}
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return c.Query("token")
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}
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@@ -47,9 +65,14 @@ func Auth(jwtManager *auth.JWTManager) gin.HandlerFunc {
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}
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}
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func AdminAuth(jwtManager *auth.JWTManager) gin.HandlerFunc {
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func AdminAuth(jwtManager *auth.JWTManager, validate AdminTokenValidatorFunc) gin.HandlerFunc {
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return func(c *gin.Context) {
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tokenText := extractToken(c)
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tokenText := extractBearerToken(c)
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if tokenText == "" {
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if cookieToken, err := c.Cookie(AdminAccessCookieName); err == nil {
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tokenText = strings.TrimSpace(cookieToken)
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}
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}
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if tokenText == "" {
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response.Unauthorized(c, "缺少后台访问令牌")
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c.Abort()
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@@ -62,9 +85,44 @@ func AdminAuth(jwtManager *auth.JWTManager) gin.HandlerFunc {
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c.Abort()
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return
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}
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username := claims.Phone
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passwordMustChange := false
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if validate != nil {
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tokenContext, err := validate(c.Request.Context(), claims.UserID, claims.TokenVersion)
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if err != nil {
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response.Unauthorized(c, "后台访问令牌无效或已过期")
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c.Abort()
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return
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}
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username = tokenContext.Username
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passwordMustChange = tokenContext.PasswordMustChange
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}
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c.Set(ContextAdminID, claims.UserID)
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c.Set(ContextUsername, claims.Phone)
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c.Set(ContextUsername, username)
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c.Set(ContextPasswordMustChange, passwordMustChange)
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c.Next()
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}
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}
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func RequireAdminPasswordChanged() gin.HandlerFunc {
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allowed := map[string]bool{
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"/api/admin/me": true,
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"/api/admin/auth/logout": true,
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"/api/admin/admin-users/me/password": true,
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}
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return func(c *gin.Context) {
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value, ok := c.Get(ContextPasswordMustChange)
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if !ok {
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c.Next()
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return
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}
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mustChange, ok := value.(bool)
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if !ok || !mustChange || allowed[c.FullPath()] {
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c.Next()
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return
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}
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response.Error(c, http.StatusForbidden, "password_must_change", "请先修改初始密码")
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c.Abort()
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}
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}
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@@ -16,38 +16,56 @@ import (
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// 超级管理员(拥有 super_admin 角色的管理员)自动放行。
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func RequirePermission(permCode string, rdb *redis.Client) gin.HandlerFunc {
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return func(c *gin.Context) {
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value, ok := c.Get(ContextAdminID)
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if !ok {
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response.Unauthorized(c, "缺少管理员上下文")
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c.Abort()
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return
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if checkPermission(c, permCode, rdb) {
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c.Next()
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}
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adminID, ok := value.(uint64)
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if !ok {
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response.Unauthorized(c, "管理员上下文无效")
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c.Abort()
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return
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}
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codes, err := getPermCodes(c, rdb, adminID)
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if err != nil {
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response.Error(c, http.StatusInternalServerError, "perm_check_failed", "权限校验服务暂时不可用")
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c.Abort()
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return
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}
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for _, code := range codes {
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if code == permCode || code == "*" {
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c.Next()
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return
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}
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}
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response.Error(c, http.StatusForbidden, "forbidden", "没有操作权限")
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c.Abort()
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}
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}
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func RequirePermissionIf(permCode string, rdb *redis.Client, predicate func(*gin.Context) bool) gin.HandlerFunc {
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return func(c *gin.Context) {
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if predicate == nil || !predicate(c) {
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c.Next()
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return
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}
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if checkPermission(c, permCode, rdb) {
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c.Next()
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}
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}
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}
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func checkPermission(c *gin.Context, permCode string, rdb *redis.Client) bool {
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value, ok := c.Get(ContextAdminID)
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if !ok {
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response.Unauthorized(c, "缺少管理员上下文")
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c.Abort()
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return false
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}
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adminID, ok := value.(uint64)
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if !ok {
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response.Unauthorized(c, "管理员上下文无效")
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c.Abort()
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return false
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}
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codes, err := getPermCodes(c, rdb, adminID)
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if err != nil {
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response.Error(c, http.StatusInternalServerError, "perm_check_failed", "权限校验服务暂时不可用")
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c.Abort()
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return false
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}
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for _, code := range codes {
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if code == permCode || code == "*" {
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return true
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}
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}
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response.Error(c, http.StatusForbidden, "forbidden", "没有操作权限")
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c.Abort()
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return false
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}
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func getPermCodes(c *gin.Context, rdb *redis.Client, adminID uint64) ([]string, error) {
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if rdb == nil {
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return nil, errors.New("redis unavailable")
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@@ -1,12 +1,14 @@
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package middleware
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import (
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"context"
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"net/http"
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"strconv"
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"sync"
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"time"
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"github.com/gin-gonic/gin"
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"github.com/redis/go-redis/v9"
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)
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type rateLimitBucket struct {
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@@ -22,7 +24,14 @@ type rateLimiter struct {
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buckets map[string]rateLimitBucket
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}
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func RateLimitPerMinute(limit int) gin.HandlerFunc {
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type redisRateLimiter struct {
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redis *redis.Client
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fallback *rateLimiter
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limit int
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window time.Duration
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}
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func RateLimitPerMinute(limit int, rdb *redis.Client) gin.HandlerFunc {
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if limit <= 0 {
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return func(c *gin.Context) {
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c.Next()
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@@ -33,24 +42,57 @@ func RateLimitPerMinute(limit int) gin.HandlerFunc {
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window: time.Minute,
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buckets: make(map[string]rateLimitBucket),
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}
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if rdb != nil {
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return (&redisRateLimiter{
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redis: rdb,
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fallback: limiter,
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limit: limit,
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window: time.Minute,
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}).handle
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}
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return limiter.handle
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}
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func (l *redisRateLimiter) handle(c *gin.Context) {
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now := time.Now()
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key := c.ClientIP()
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allowed, resetAt, err := l.allow(c.Request.Context(), key, now)
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if err != nil {
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allowed, resetAt = l.fallback.allow(key, now)
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}
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if !allowed {
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writeRateLimited(c, now, resetAt)
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return
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}
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c.Next()
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}
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func (l *rateLimiter) handle(c *gin.Context) {
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now := time.Now()
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key := c.ClientIP()
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allowed, resetAt := l.allow(key, now)
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if !allowed {
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c.Header("Retry-After", retryAfterSeconds(now, resetAt))
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c.AbortWithStatusJSON(http.StatusTooManyRequests, gin.H{
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"code": "rate_limited",
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"message": "请求过于频繁,请稍后再试",
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})
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writeRateLimited(c, now, resetAt)
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return
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}
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c.Next()
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}
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func (l *redisRateLimiter) allow(ctx context.Context, key string, now time.Time) (bool, time.Time, error) {
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windowSeconds := int64(l.window / time.Second)
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windowID := now.Unix() / windowSeconds
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redisKey := "rate_limit:" + key + ":" + strconv.FormatInt(windowID, 10)
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count, err := l.redis.Incr(ctx, redisKey).Result()
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if err != nil {
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return false, time.Time{}, err
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}
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if count == 1 {
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_ = l.redis.Expire(ctx, redisKey, 2*l.window).Err()
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}
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resetAt := time.Unix((windowID+1)*windowSeconds, 0)
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return count <= int64(l.limit), resetAt, nil
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}
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func (l *rateLimiter) allow(key string, now time.Time) (bool, time.Time) {
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l.mu.Lock()
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defer l.mu.Unlock()
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@@ -81,3 +123,11 @@ func retryAfterSeconds(now time.Time, resetAt time.Time) string {
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}
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return strconv.Itoa(seconds)
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}
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func writeRateLimited(c *gin.Context, now time.Time, resetAt time.Time) {
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c.Header("Retry-After", retryAfterSeconds(now, resetAt))
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c.AbortWithStatusJSON(http.StatusTooManyRequests, gin.H{
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"code": "rate_limited",
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"message": "请求过于频繁,请稍后再试",
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})
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}
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Block a user