49 lines
1.3 KiB
Go
49 lines
1.3 KiB
Go
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package mildware
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import (
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"net/http"
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"strings"
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"gen2d/internal/model"
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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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// AuthMiddleware 返回 JWT 认证中间件，校验 Bearer token 并注入 userID 到上下文。
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func AuthMiddleware(jwtSecret string) gin.HandlerFunc {
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return func(c *gin.Context) {
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authHeader := c.GetHeader("Authorization")
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if authHeader == "" {
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c.AbortWithStatusJSON(http.StatusUnauthorized, model.Fail(http.StatusUnauthorized, "未提供认证令牌"))
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return
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}
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tokenString := strings.TrimPrefix(authHeader, "Bearer ")
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if tokenString == authHeader {
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c.AbortWithStatusJSON(http.StatusUnauthorized, model.Fail(http.StatusUnauthorized, "认证格式错误，需为 Bearer <token>"))
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return
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}
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token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
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return []byte(jwtSecret), nil
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})
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if err != nil || !token.Valid {
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c.AbortWithStatusJSON(http.StatusUnauthorized, model.Fail(http.StatusUnauthorized, "令牌无效或已过期"))
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return
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}
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claims, ok := token.Claims.(jwt.MapClaims)
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if !ok {
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c.AbortWithStatusJSON(http.StatusUnauthorized, model.Fail(http.StatusUnauthorized, "令牌解析失败"))
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return
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}
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if sub, ok := claims["sub"]; ok {
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c.Set("userID", sub)
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}
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c.Next()
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}
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}
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