feat: Wormhole 内网穿透与反向代理网关

Go + Vue 管理台：Agent 隧道、域名反代、IP 安全、访客验证与监控大盘。
Gitea Actions CI 多架构镜像；纯 Go SQLite、无 CGO Docker 构建。

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/auth/jwt.go

@@ -0,0 +1,118 @@
+package auth
+
+import (
+	"errors"
+	"sync"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/wormhole/wormhole/internal/config"
+	"github.com/wormhole/wormhole/internal/store"
+)
+
+type Claims struct {
+	UserID   uint   `json:"user_id"`
+	Username string `json:"username"`
+	Role     string `json:"role"`
+	jwt.RegisteredClaims
+}
+
+type Service struct {
+	mu      sync.RWMutex
+	cfg     *config.AuthConfig
+	limiter *LoginLimiter
+}
+
+func NewService(cfg *config.AuthConfig) *Service {
+	return &Service{
+		cfg:     cfg,
+		limiter: NewLoginLimiter(cfg),
+	}
+}
+
+func (s *Service) ReloadAuth(cfg *config.AuthConfig) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	*s.cfg = *cfg
+	s.limiter = NewLoginLimiter(cfg)
+}
+
+func (s *Service) Login(st *store.Store, ip, username, password string) (string, *store.User, error) {
+	s.mu.RLock()
+	limiter := s.limiter
+	s.mu.RUnlock()
+	if retry, blocked := limiter.IsBlocked(ip, username); blocked {
+		return "", nil, &LoginBlockedError{RetryAfter: retry}
+	}
+
+	user, err := st.GetUserByUsername(username)
+	if err != nil {
+		limiter.RecordFailure(ip, username)
+		time.Sleep(300 * time.Millisecond)
+		return "", nil, errors.New("invalid credentials")
+	}
+	if !user.Status {
+		limiter.RecordFailure(ip, username)
+		time.Sleep(300 * time.Millisecond)
+		return "", nil, errors.New("invalid credentials")
+	}
+	if !store.CheckPassword(user.PasswordHash, password) {
+		limiter.RecordFailure(ip, username)
+		time.Sleep(300 * time.Millisecond)
+		return "", nil, errors.New("invalid credentials")
+	}
+	if user.Role == "visitor" {
+		limiter.RecordFailure(ip, username)
+		time.Sleep(300 * time.Millisecond)
+		return "", nil, errors.New("访客账号无法登录管理后台")
+	}
+
+	limiter.Reset(ip, username)
+	token, err := s.GenerateToken(user)
+	if err != nil {
+		return "", nil, err
+	}
+	return token, user, nil
+}
+
+func (s *Service) GenerateToken(user *store.User) (string, error) {
+	s.mu.RLock()
+	cfg := s.cfg
+	s.mu.RUnlock()
+	claims := Claims{
+		UserID:   user.ID,
+		Username: user.Username,
+		Role:     user.Role,
+		RegisteredClaims: jwt.RegisteredClaims{
+			ExpiresAt: jwt.NewNumericDate(time.Now().Add(cfg.TokenTTL)),
+			IssuedAt:  jwt.NewNumericDate(time.Now()),
+		},
+	}
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	return token.SignedString([]byte(cfg.JWTSecret))
+}
+
+func (s *Service) ParseToken(tokenStr string) (*Claims, error) {
+	s.mu.RLock()
+	secret := s.cfg.JWTSecret
+	s.mu.RUnlock()
+	token, err := jwt.ParseWithClaims(tokenStr, &Claims{}, func(t *jwt.Token) (interface{}, error) {
+		return []byte(secret), nil
+	})
+	if err != nil {
+		return nil, err
+	}
+	claims, ok := token.Claims.(*Claims)
+	if !ok || !token.Valid {
+		return nil, errors.New("invalid token")
+	}
+	return claims, nil
+}
+
+func IsAdmin(role string) bool {
+	return role == "admin"
+}
+
+func IsVisitor(role string) bool {
+	return role == "visitor"
+}