60 lines
1.3 KiB
Go
60 lines
1.3 KiB
Go
package middleware
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import (
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"net/http"
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"strings"
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"github.com/gin-gonic/gin"
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"github.com/golang-jwt/jwt/v4"
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)
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func BearerAuth(jwtSecret []byte) 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.JSON(http.StatusUnauthorized, gin.H{"error": "missing authorization header"})
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c.Abort()
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return
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}
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// 检查 Bearer 前缀
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parts := strings.Split(authHeader, " ")
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if len(parts) != 2 || parts[0] != "Bearer" {
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c.JSON(http.StatusUnauthorized, gin.H{"error": "invalid authorization header"})
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c.Abort()
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return
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}
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tokenString := parts[1]
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// 解析和验证令牌
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token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
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// 验证签名算法
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if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, jwt.ErrSignatureInvalid
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}
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return jwtSecret, nil
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})
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if err != nil {
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c.JSON(http.StatusUnauthorized, gin.H{"error": "invalid token"})
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c.Abort()
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return
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}
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if !token.Valid {
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c.JSON(http.StatusUnauthorized, gin.H{"error": "invalid token"})
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c.Abort()
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return
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}
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// 将令牌中的声明存储在上下文中
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if claims, ok := token.Claims.(jwt.MapClaims); ok {
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c.Set("user_id", uint(claims["sub"].(float64)))
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c.Set("scope", claims["scope"].(string))
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}
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c.Next()
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}
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}
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