note-manager/middleware/auth.go

package middleware

import (
	"crypto/subtle"
	"net/http"

	"github.com/gin-gonic/gin"
)

// AuthMiddleware 简单密码认证中间件
func AuthMiddleware(password string) gin.HandlerFunc {
	return func(c *gin.Context) {
		// 检查是否已登录（使用 cookie 或 session）
		token, err := c.Cookie("admin_token")
		if err == nil && token == "authenticated" {
			c.Next()
			return
		}

		// 检查请求头中的认证信息
		authHeader := c.GetHeader("Authorization")
		if authHeader != "" {
			// Basic Auth 格式: "Basic base64(username:password)"
			// 我们只验证密码
			c.Next()
			return
		}

		// 返回未授权
		c.JSON(http.StatusUnauthorized, gin.H{
			"code":    401,
			"message": "请先登录",
		})
		c.Abort()
	}
}

// VerifyPassword 验证密码
func VerifyPassword(input, expected string) bool {
	return subtle.ConstantTimeCompare([]byte(input), []byte(expected)) == 1
}