Add server components

server/update/middleware/auth.go

@@ -0,0 +1,74 @@
+package middleware
+
+import (
+	"net/http"
+	"strings"
+
+	"software-download-center/utils"
+
+	"github.com/gin-gonic/gin"
+)
+
+// AuthMiddleware 认证中间件
+func AuthMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		// 从请求头获取 token
+		authHeader := c.GetHeader("Authorization")
+		if authHeader == "" {
+			// 尝试从 cookie 获取
+			token, err := c.Cookie("token")
+			if err != nil || token == "" {
+				c.JSON(http.StatusUnauthorized, gin.H{
+					"error": "未授权，请先登录",
+				})
+				c.Abort()
+				return
+			}
+			authHeader = "Bearer " + token
+		}
+
+		// 提取 token
+		parts := strings.SplitN(authHeader, " ", 2)
+		if len(parts) != 2 || parts[0] != "Bearer" {
+			c.JSON(http.StatusUnauthorized, gin.H{
+				"error": "无效的认证格式",
+			})
+			c.Abort()
+			return
+		}
+
+		token := parts[1]
+
+		// 解析 token
+		claims, err := utils.ParseToken(token)
+		if err != nil {
+			c.JSON(http.StatusUnauthorized, gin.H{
+				"error": "无效的 token",
+			})
+			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)
+		c.Set("is_admin", claims.IsAdmin)
+
+		c.Next()
+	}
+}
+
+// AdminMiddleware 管理员中间件
+func AdminMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		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()
+	}
+}