131 lines
3.3 KiB
Go
131 lines
3.3 KiB
Go
package middleware
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import (
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"context"
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"crypto/subtle"
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"strings"
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"sub2api/internal/model"
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"sub2api/internal/service"
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"github.com/gin-gonic/gin"
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)
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// AdminAuth 管理员认证中间件
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// 支持两种认证方式（通过不同的 header 区分）：
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// 1. Admin API Key: x-api-key: <admin-api-key>
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// 2. JWT Token: Authorization: Bearer <jwt-token> (需要管理员角色)
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func AdminAuth(
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authService *service.AuthService,
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userRepo interface {
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GetByID(ctx context.Context, id int64) (*model.User, error)
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GetFirstAdmin(ctx context.Context) (*model.User, error)
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},
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settingService *service.SettingService,
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) gin.HandlerFunc {
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return func(c *gin.Context) {
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// 检查 x-api-key header（Admin API Key 认证）
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apiKey := c.GetHeader("x-api-key")
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if apiKey != "" {
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if !validateAdminApiKey(c, apiKey, settingService, userRepo) {
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return
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}
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c.Next()
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return
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}
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// 检查 Authorization header（JWT 认证）
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authHeader := c.GetHeader("Authorization")
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if authHeader != "" {
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parts := strings.SplitN(authHeader, " ", 2)
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if len(parts) == 2 && parts[0] == "Bearer" {
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if !validateJWTForAdmin(c, parts[1], authService, userRepo) {
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return
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}
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c.Next()
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return
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}
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}
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// 无有效认证信息
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AbortWithError(c, 401, "UNAUTHORIZED", "Authorization required")
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}
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}
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// validateAdminApiKey 验证管理员 API Key
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func validateAdminApiKey(
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c *gin.Context,
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key string,
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settingService *service.SettingService,
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userRepo interface {
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GetFirstAdmin(ctx context.Context) (*model.User, error)
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},
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) bool {
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storedKey, err := settingService.GetAdminApiKey(c.Request.Context())
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if err != nil {
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AbortWithError(c, 500, "INTERNAL_ERROR", "Internal server error")
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return false
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}
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// 未配置或不匹配，统一返回相同错误（避免信息泄露）
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if storedKey == "" || subtle.ConstantTimeCompare([]byte(key), []byte(storedKey)) != 1 {
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AbortWithError(c, 401, "INVALID_ADMIN_KEY", "Invalid admin API key")
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return false
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}
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// 获取真实的管理员用户
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admin, err := userRepo.GetFirstAdmin(c.Request.Context())
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if err != nil {
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AbortWithError(c, 500, "INTERNAL_ERROR", "No admin user found")
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return false
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}
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c.Set(string(ContextKeyUser), admin)
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c.Set("auth_method", "admin_api_key")
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return true
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}
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// validateJWTForAdmin 验证 JWT 并检查管理员权限
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func validateJWTForAdmin(
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c *gin.Context,
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token string,
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authService *service.AuthService,
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userRepo interface {
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GetByID(ctx context.Context, id int64) (*model.User, error)
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},
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) bool {
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// 验证 JWT token
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claims, err := authService.ValidateToken(token)
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if err != nil {
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if err == service.ErrTokenExpired {
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AbortWithError(c, 401, "TOKEN_EXPIRED", "Token has expired")
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return false
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}
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AbortWithError(c, 401, "INVALID_TOKEN", "Invalid token")
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return false
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}
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// 从数据库获取用户
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user, err := userRepo.GetByID(c.Request.Context(), claims.UserID)
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if err != nil {
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AbortWithError(c, 401, "USER_NOT_FOUND", "User not found")
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return false
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}
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// 检查用户状态
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if !user.IsActive() {
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AbortWithError(c, 401, "USER_INACTIVE", "User account is not active")
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return false
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}
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// 检查管理员权限
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if user.Role != model.RoleAdmin {
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AbortWithError(c, 403, "FORBIDDEN", "Admin access required")
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return false
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}
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c.Set(string(ContextKeyUser), user)
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c.Set("auth_method", "jwt")
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return true
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}
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