init

2026-04-25 13:26:02 +08:00
commit 62b87c6002
29 changed files with 1884 additions and 0 deletions
@@ -0,0 +1,142 @@
+package middlewares
+
+import (
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/golang-jwt/jwt/v5"
+	"go.uber.org/zap"
+)
+
+var (
+	jwtSecret   []byte
+	jwtIssuer   string
+	expireHours int
+)
+
+// JWTClaims JWT声明结构
+type JWTClaims struct {
+	UserID   int    `json:"user_id"`
+	Username string `json:"username"`
+	jwt.RegisteredClaims
+}
+
+// InitJWT 初始化JWT配置
+func InitJWT(secret string, expire int, issuer string) {
+	jwtSecret = []byte(secret)
+	expireHours = expire
+	jwtIssuer = issuer
+}
+
+// GenerateToken 生成JWT token
+func GenerateToken(userID int, username string) (string, error) {
+	claims := JWTClaims{
+		UserID:   userID,
+		Username: username,
+		RegisteredClaims: jwt.RegisteredClaims{
+			ExpiresAt: jwt.NewNumericDate(time.Now().Add(time.Duration(expireHours) * time.Hour)),
+			IssuedAt:  jwt.NewNumericDate(time.Now()),
+			NotBefore: jwt.NewNumericDate(time.Now()),
+			Issuer:    jwtIssuer,
+		},
+	}
+
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	return token.SignedString(jwtSecret)
+}
+
+// ParseToken 解析JWT token
+func ParseToken(tokenString string) (*JWTClaims, error) {
+	token, err := jwt.ParseWithClaims(tokenString, &JWTClaims{}, func(token *jwt.Token) (interface{}, error) {
+		return jwtSecret, nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	if claims, ok := token.Claims.(*JWTClaims); ok && token.Valid {
+		return claims, nil
+	}
+
+	return nil, jwt.ErrTokenInvalidClaims
+}
+
+// JWTAuth JWT认证中间件
+func JWTAuth() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		// 从Header获取token
+		authHeader := c.GetHeader("Authorization")
+		if authHeader == "" {
+			Logger.Warn("JWT认证失败：缺少Authorization头部",
+				zap.String("path", c.Request.URL.Path),
+				zap.String("client_ip", c.ClientIP()),
+			)
+			c.JSON(http.StatusOK, gin.H{
+				"code":    401,
+				"message": "缺少认证token",
+			})
+			c.Abort()
+			return
+		}
+
+		// Bearer token格式检查
+		if !strings.HasPrefix(authHeader, "Bearer ") {
+			Logger.Warn("JWT认证失败：token格式错误",
+				zap.String("auth_header", authHeader),
+				zap.String("path", c.Request.URL.Path),
+				zap.String("client_ip", c.ClientIP()),
+			)
+			c.JSON(http.StatusOK, gin.H{
+				"code":    401,
+				"message": "token格式错误",
+			})
+			c.Abort()
+			return
+		}
+
+		tokenString := strings.TrimPrefix(authHeader, "Bearer ")
+
+		// 解析token
+		claims, err := ParseToken(tokenString)
+		if err != nil {
+			Logger.Warn("JWT认证失败：token解析错误",
+				zap.Error(err),
+				zap.String("path", c.Request.URL.Path),
+				zap.String("client_ip", c.ClientIP()),
+			)
+			c.JSON(http.StatusOK, gin.H{
+				"code":    401,
+				"message": "token无效或已过期",
+			})
+			c.Abort()
+			return
+		}
+
+		// 将用户信息存储到上下文
+		c.Set("user_id", claims.UserID)
+		c.Set("username", claims.Username)
+
+		Logger.Debug("JWT认证成功",
+			zap.Int("user_id", claims.UserID),
+			zap.String("username", claims.Username),
+			zap.String("path", c.Request.URL.Path),
+		)
+
+		c.Next()
+	}
+}
+
+// GetCurrentUser 从上下文获取当前用户信息
+func GetCurrentUser(c *gin.Context) (int, string, bool) {
+	userID, userExists := c.Get("user_id")
+	username, nameExists := c.Get("username")
+
+	if !userExists || !nameExists {
+		return 0, "", false
+	}
+
+	return userID.(int), username.(string), true
+}