上传初始版，功能未经任何测试，仅为基本框架，目前为完全不可用状态

backend/api/middleware.go

@@ -0,0 +1,98 @@
+package api
+
+import (
+	"net/http"
+	"strings"
+
+	"d:\项目\dobaochet\backend\config"
+	"d:\项目\dobaochet\backend\db"
+	"d:\项目\dobaochet\backend\models"
+	"d:\项目\dobaochet\backend\utils"
+
+	"github.com/gin-gonic/gin"
+)
+
+// AuthMiddleware 认证中间件
+func AuthMiddleware(cfg *config.Config) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		// 从请求头获取Authorization
+		authHeader := c.GetHeader("Authorization")
+		if authHeader == "" {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "未提供认证令牌"})
+			c.Abort()
+			return
+		}
+
+		// 检查Bearer前缀
+		parts := strings.SplitN(authHeader, " ", 2)
+		if !(len(parts) == 2 && parts[0] == "Bearer") {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "认证令牌格式错误"})
+			c.Abort()
+			return
+		}
+
+		// 解析JWT令牌
+		claims, err := utils.ParseToken(parts[1], cfg.JWT.SecretKey)
+		if err != nil {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "无效的认证令牌"})
+			c.Abort()
+			return
+		}
+
+		// 查询用户信息
+		var user models.User
+		result := db.GetDB().Preload("Quota").First(&user, claims.UserID)
+		if result.Error != nil {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "用户不存在"})
+			c.Abort()
+			return
+		}
+
+		// 检查用户是否激活
+		if !user.IsActive {
+			c.JSON(http.StatusForbidden, gin.H{"error": "用户已被禁用"})
+			c.Abort()
+			return
+		}
+
+		// 将用户信息设置到上下文
+		c.Set("user", user)
+		c.Set("user_id", user.ID)
+		c.Set("is_admin", user.IsAdmin)
+
+		c.Next()
+	}
+}
+
+// AdminMiddleware 管理员中间件
+func AdminMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		// 从上下文获取用户信息
+		isAdmin, exists := c.Get("is_admin")
+		if !exists || !isAdmin.(bool) {
+			c.JSON(http.StatusForbidden, gin.H{"error": "需要管理员权限"})
+			c.Abort()
+			return
+		}
+
+		c.Next()
+	}
+}
+
+// CORSMiddleware CORS中间件
+func CORSMiddleware(cfg *config.Config) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		// 设置允许的来源
+		c.Writer.Header().Set("Access-Control-Allow-Origin", strings.Join(cfg.CORS.AllowOrigins, ","))
+		c.Writer.Header().Set("Access-Control-Allow-Credentials", "true")
+		c.Writer.Header().Set("Access-Control-Allow-Headers", strings.Join(cfg.CORS.AllowHeaders, ","))
+		c.Writer.Header().Set("Access-Control-Allow-Methods", strings.Join(cfg.CORS.AllowMethods, ","))
+
+		if c.Request.Method == "OPTIONS" {
+			c.AbortWithStatus(204)
+			return
+		}
+
+		c.Next()
+	}
+}