weijuesen
106 lines
3.0 KiB
Go
106 lines
3.0 KiB
Go
package middleware
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import (
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"net/http"
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"strings"
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"silk-server-go/internal/config"
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"github.com/gin-gonic/gin"
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"github.com/golang-jwt/jwt/v5"
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)
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// JWTClaims JWT 负载，与 NestJS 签发格式一致
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type JWTClaims struct {
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Username string `json:"username"`
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Role string `json:"role"`
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TokenType string `json:"tokenType,omitempty"` // access | refresh，空值视为 access（兼容旧令牌）
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jwt.RegisteredClaims
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}
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// 白名单路径，无需鉴权
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var whitelist = map[string]bool{
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"/api/v1/health": true,
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"/health": true,
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"/api/health": true,
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"/api/v1/auth/login": true,
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"/auth/login": true,
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"/api/v1/auth/register": true,
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"/auth/register": true,
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"/api/v1/auth/refresh": true,
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"/auth/refresh": true,
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"/api/v1/video/clips/internal": true,
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"/api/v1/video/recordings/internal/end": true,
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}
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// Auth JWT 鉴权中间件
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func Auth(cfg *config.Config) gin.HandlerFunc {
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return func(c *gin.Context) {
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path := c.Request.URL.Path
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// 白名单路径跳过鉴权
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if whitelist[path] {
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c.Next()
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return
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}
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// 视频片段流接口支持动态 ID，使用前缀+后缀匹配放行
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if strings.HasPrefix(path, "/api/v1/video/clips/") && strings.HasSuffix(path, "/stream") {
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c.Next()
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return
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}
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// 直播流转码代理接口
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if strings.HasPrefix(path, "/api/v1/video/cameras/") && (strings.HasSuffix(path, "/live/stream") || strings.HasSuffix(path, "/live/proxy")) {
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c.Next()
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return
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}
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// 解析 Authorization: Bearer <token>
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authHeader := c.GetHeader("Authorization")
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if authHeader == "" {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "未提供认证信息"})
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return
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}
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parts := strings.SplitN(authHeader, " ", 2)
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if len(parts) != 2 || !strings.EqualFold(parts[0], "Bearer") {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "认证格式错误"})
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return
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}
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tokenStr := parts[1]
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// 用 JWTSecret 验证 token，仅允许 HS256 算法
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claims := &JWTClaims{}
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token, err := jwt.ParseWithClaims(tokenStr, claims, func(t *jwt.Token) (interface{}, error) {
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return []byte(cfg.JWTSecret), nil
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}, jwt.WithValidMethods([]string{"HS256"}))
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if err != nil || !token.Valid {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "认证失败"})
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return
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}
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// 校验令牌是否已被登出吊销
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if IsRevoked(claims) {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "令牌已注销，请重新登录"})
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return
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}
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// 拒绝使用 refresh 令牌访问业务接口
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if claims.TokenType == "refresh" {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "认证失败"})
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return
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}
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// 将用户信息存入 context
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c.Set("user", map[string]interface{}{
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"sub": claims.Subject,
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"username": claims.Username,
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"role": claims.Role,
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})
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c.Next()
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}
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}
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