first commit
This commit is contained in:
huangzhenpc
582
backend/internal/service/auth_service.go
Normal file
582
backend/internal/service/auth_service.go
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@@ -0,0 +1,582 @@
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package service
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import (
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"context"
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"crypto/rand"
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"encoding/hex"
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"errors"
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"fmt"
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"log"
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"net/mail"
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"strings"
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"time"
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"github.com/Wei-Shaw/sub2api/internal/config"
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infraerrors "github.com/Wei-Shaw/sub2api/internal/pkg/errors"
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"github.com/golang-jwt/jwt/v5"
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"golang.org/x/crypto/bcrypt"
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)
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var (
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ErrInvalidCredentials = infraerrors.Unauthorized("INVALID_CREDENTIALS", "invalid email or password")
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ErrUserNotActive = infraerrors.Forbidden("USER_NOT_ACTIVE", "user is not active")
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ErrEmailExists = infraerrors.Conflict("EMAIL_EXISTS", "email already exists")
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ErrEmailReserved = infraerrors.BadRequest("EMAIL_RESERVED", "email is reserved")
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ErrInvalidToken = infraerrors.Unauthorized("INVALID_TOKEN", "invalid token")
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ErrTokenExpired = infraerrors.Unauthorized("TOKEN_EXPIRED", "token has expired")
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ErrTokenTooLarge = infraerrors.BadRequest("TOKEN_TOO_LARGE", "token too large")
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ErrTokenRevoked = infraerrors.Unauthorized("TOKEN_REVOKED", "token has been revoked")
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ErrEmailVerifyRequired = infraerrors.BadRequest("EMAIL_VERIFY_REQUIRED", "email verification is required")
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ErrRegDisabled = infraerrors.Forbidden("REGISTRATION_DISABLED", "registration is currently disabled")
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ErrServiceUnavailable = infraerrors.ServiceUnavailable("SERVICE_UNAVAILABLE", "service temporarily unavailable")
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)
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// maxTokenLength 限制 token 大小，避免超长 header 触发解析时的异常内存分配。
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const maxTokenLength = 8192
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// JWTClaims JWT载荷数据
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type JWTClaims struct {
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UserID int64 `json:"user_id"`
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Email string `json:"email"`
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Role string `json:"role"`
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TokenVersion int64 `json:"token_version"` // Used to invalidate tokens on password change
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jwt.RegisteredClaims
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}
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// AuthService 认证服务
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type AuthService struct {
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userRepo UserRepository
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cfg *config.Config
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settingService *SettingService
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emailService *EmailService
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turnstileService *TurnstileService
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emailQueueService *EmailQueueService
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promoService *PromoService
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}
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// NewAuthService 创建认证服务实例
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func NewAuthService(
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userRepo UserRepository,
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cfg *config.Config,
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settingService *SettingService,
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emailService *EmailService,
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turnstileService *TurnstileService,
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emailQueueService *EmailQueueService,
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promoService *PromoService,
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) *AuthService {
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return &AuthService{
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userRepo: userRepo,
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cfg: cfg,
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settingService: settingService,
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emailService: emailService,
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turnstileService: turnstileService,
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emailQueueService: emailQueueService,
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promoService: promoService,
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}
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}
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// Register 用户注册，返回token和用户
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func (s *AuthService) Register(ctx context.Context, email, password string) (string, *User, error) {
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return s.RegisterWithVerification(ctx, email, password, "", "")
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}
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// RegisterWithVerification 用户注册（支持邮件验证和优惠码），返回token和用户
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func (s *AuthService) RegisterWithVerification(ctx context.Context, email, password, verifyCode, promoCode string) (string, *User, error) {
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// 检查是否开放注册（默认关闭：settingService 未配置时不允许注册）
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if s.settingService == nil || !s.settingService.IsRegistrationEnabled(ctx) {
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return "", nil, ErrRegDisabled
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}
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// 防止用户注册 LinuxDo OAuth 合成邮箱，避免第三方登录与本地账号发生碰撞。
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if isReservedEmail(email) {
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return "", nil, ErrEmailReserved
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}
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// 检查是否需要邮件验证
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if s.settingService != nil && s.settingService.IsEmailVerifyEnabled(ctx) {
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// 如果邮件验证已开启但邮件服务未配置，拒绝注册
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// 这是一个配置错误，不应该允许绕过验证
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if s.emailService == nil {
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log.Println("[Auth] Email verification enabled but email service not configured, rejecting registration")
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return "", nil, ErrServiceUnavailable
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}
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if verifyCode == "" {
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return "", nil, ErrEmailVerifyRequired
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}
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// 验证邮箱验证码
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if err := s.emailService.VerifyCode(ctx, email, verifyCode); err != nil {
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return "", nil, fmt.Errorf("verify code: %w", err)
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}
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}
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// 检查邮箱是否已存在
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existsEmail, err := s.userRepo.ExistsByEmail(ctx, email)
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if err != nil {
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log.Printf("[Auth] Database error checking email exists: %v", err)
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return "", nil, ErrServiceUnavailable
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}
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if existsEmail {
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return "", nil, ErrEmailExists
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}
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// 密码哈希
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hashedPassword, err := s.HashPassword(password)
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if err != nil {
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return "", nil, fmt.Errorf("hash password: %w", err)
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}
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// 获取默认配置
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defaultBalance := s.cfg.Default.UserBalance
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defaultConcurrency := s.cfg.Default.UserConcurrency
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if s.settingService != nil {
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defaultBalance = s.settingService.GetDefaultBalance(ctx)
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defaultConcurrency = s.settingService.GetDefaultConcurrency(ctx)
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}
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// 创建用户
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user := &User{
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Email: email,
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PasswordHash: hashedPassword,
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Role: RoleUser,
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Balance: defaultBalance,
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Concurrency: defaultConcurrency,
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Status: StatusActive,
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}
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if err := s.userRepo.Create(ctx, user); err != nil {
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// 优先检查邮箱冲突错误（竞态条件下可能发生）
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if errors.Is(err, ErrEmailExists) {
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return "", nil, ErrEmailExists
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}
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log.Printf("[Auth] Database error creating user: %v", err)
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return "", nil, ErrServiceUnavailable
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}
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// 应用优惠码（如果提供）
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if promoCode != "" && s.promoService != nil {
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if err := s.promoService.ApplyPromoCode(ctx, user.ID, promoCode); err != nil {
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// 优惠码应用失败不影响注册，只记录日志
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log.Printf("[Auth] Failed to apply promo code for user %d: %v", user.ID, err)
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} else {
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// 重新获取用户信息以获取更新后的余额
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if updatedUser, err := s.userRepo.GetByID(ctx, user.ID); err == nil {
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user = updatedUser
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}
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}
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}
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// 生成token
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token, err := s.GenerateToken(user)
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if err != nil {
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return "", nil, fmt.Errorf("generate token: %w", err)
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}
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return token, user, nil
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}
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// SendVerifyCodeResult 发送验证码返回结果
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type SendVerifyCodeResult struct {
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Countdown int `json:"countdown"` // 倒计时秒数
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}
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// SendVerifyCode 发送邮箱验证码（同步方式）
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func (s *AuthService) SendVerifyCode(ctx context.Context, email string) error {
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// 检查是否开放注册（默认关闭）
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if s.settingService == nil || !s.settingService.IsRegistrationEnabled(ctx) {
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return ErrRegDisabled
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}
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if isReservedEmail(email) {
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return ErrEmailReserved
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}
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// 检查邮箱是否已存在
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existsEmail, err := s.userRepo.ExistsByEmail(ctx, email)
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if err != nil {
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log.Printf("[Auth] Database error checking email exists: %v", err)
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return ErrServiceUnavailable
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}
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if existsEmail {
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return ErrEmailExists
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}
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// 发送验证码
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if s.emailService == nil {
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return errors.New("email service not configured")
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}
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// 获取网站名称
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siteName := "Sub2API"
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if s.settingService != nil {
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siteName = s.settingService.GetSiteName(ctx)
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}
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return s.emailService.SendVerifyCode(ctx, email, siteName)
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}
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// SendVerifyCodeAsync 异步发送邮箱验证码并返回倒计时
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func (s *AuthService) SendVerifyCodeAsync(ctx context.Context, email string) (*SendVerifyCodeResult, error) {
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log.Printf("[Auth] SendVerifyCodeAsync called for email: %s", email)
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// 检查是否开放注册（默认关闭）
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if s.settingService == nil || !s.settingService.IsRegistrationEnabled(ctx) {
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log.Println("[Auth] Registration is disabled")
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return nil, ErrRegDisabled
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}
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if isReservedEmail(email) {
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return nil, ErrEmailReserved
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}
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// 检查邮箱是否已存在
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existsEmail, err := s.userRepo.ExistsByEmail(ctx, email)
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if err != nil {
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log.Printf("[Auth] Database error checking email exists: %v", err)
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return nil, ErrServiceUnavailable
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}
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if existsEmail {
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log.Printf("[Auth] Email already exists: %s", email)
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return nil, ErrEmailExists
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}
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// 检查邮件队列服务是否配置
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if s.emailQueueService == nil {
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log.Println("[Auth] Email queue service not configured")
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return nil, errors.New("email queue service not configured")
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}
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// 获取网站名称
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siteName := "Sub2API"
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if s.settingService != nil {
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siteName = s.settingService.GetSiteName(ctx)
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}
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// 异步发送
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log.Printf("[Auth] Enqueueing verify code for: %s", email)
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if err := s.emailQueueService.EnqueueVerifyCode(email, siteName); err != nil {
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log.Printf("[Auth] Failed to enqueue: %v", err)
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return nil, fmt.Errorf("enqueue verify code: %w", err)
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}
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log.Printf("[Auth] Verify code enqueued successfully for: %s", email)
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return &SendVerifyCodeResult{
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Countdown: 60, // 60秒倒计时
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}, nil
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}
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// VerifyTurnstile 验证Turnstile token
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func (s *AuthService) VerifyTurnstile(ctx context.Context, token string, remoteIP string) error {
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required := s.cfg != nil && s.cfg.Server.Mode == "release" && s.cfg.Turnstile.Required
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if required {
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if s.settingService == nil {
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log.Println("[Auth] Turnstile required but settings service is not configured")
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return ErrTurnstileNotConfigured
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}
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enabled := s.settingService.IsTurnstileEnabled(ctx)
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secretConfigured := s.settingService.GetTurnstileSecretKey(ctx) != ""
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if !enabled || !secretConfigured {
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log.Printf("[Auth] Turnstile required but not configured (enabled=%v, secret_configured=%v)", enabled, secretConfigured)
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return ErrTurnstileNotConfigured
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}
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}
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if s.turnstileService == nil {
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if required {
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log.Println("[Auth] Turnstile required but service not configured")
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return ErrTurnstileNotConfigured
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}
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return nil // 服务未配置则跳过验证
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}
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if !required && s.settingService != nil && s.settingService.IsTurnstileEnabled(ctx) && s.settingService.GetTurnstileSecretKey(ctx) == "" {
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log.Println("[Auth] Turnstile enabled but secret key not configured")
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}
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return s.turnstileService.VerifyToken(ctx, token, remoteIP)
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}
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// IsTurnstileEnabled 检查是否启用Turnstile验证
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func (s *AuthService) IsTurnstileEnabled(ctx context.Context) bool {
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if s.turnstileService == nil {
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return false
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}
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return s.turnstileService.IsEnabled(ctx)
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}
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// IsRegistrationEnabled 检查是否开放注册
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func (s *AuthService) IsRegistrationEnabled(ctx context.Context) bool {
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if s.settingService == nil {
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return false // 安全默认：settingService 未配置时关闭注册
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}
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return s.settingService.IsRegistrationEnabled(ctx)
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}
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// IsEmailVerifyEnabled 检查是否开启邮件验证
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func (s *AuthService) IsEmailVerifyEnabled(ctx context.Context) bool {
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if s.settingService == nil {
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return false
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}
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return s.settingService.IsEmailVerifyEnabled(ctx)
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}
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// Login 用户登录，返回JWT token
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func (s *AuthService) Login(ctx context.Context, email, password string) (string, *User, error) {
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// 查找用户
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user, err := s.userRepo.GetByEmail(ctx, email)
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if err != nil {
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if errors.Is(err, ErrUserNotFound) {
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return "", nil, ErrInvalidCredentials
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}
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// 记录数据库错误但不暴露给用户
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log.Printf("[Auth] Database error during login: %v", err)
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return "", nil, ErrServiceUnavailable
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}
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// 验证密码
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if !s.CheckPassword(password, user.PasswordHash) {
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return "", nil, ErrInvalidCredentials
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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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return "", nil, ErrUserNotActive
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}
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// 生成JWT token
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token, err := s.GenerateToken(user)
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if err != nil {
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return "", nil, fmt.Errorf("generate token: %w", err)
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}
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return token, user, nil
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}
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// LoginOrRegisterOAuth 用于第三方 OAuth/SSO 登录：
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// - 如果邮箱已存在：直接登录（不需要本地密码）
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// - 如果邮箱不存在：创建新用户并登录
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//
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// 注意：该函数用于 LinuxDo OAuth 登录场景（不同于上游账号的 OAuth，例如 Claude/OpenAI/Gemini）。
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// 为了满足现有数据库约束（需要密码哈希），新用户会生成随机密码并进行哈希保存。
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func (s *AuthService) LoginOrRegisterOAuth(ctx context.Context, email, username string) (string, *User, error) {
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email = strings.TrimSpace(email)
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if email == "" || len(email) > 255 {
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return "", nil, infraerrors.BadRequest("INVALID_EMAIL", "invalid email")
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}
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if _, err := mail.ParseAddress(email); err != nil {
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return "", nil, infraerrors.BadRequest("INVALID_EMAIL", "invalid email")
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}
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username = strings.TrimSpace(username)
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if len([]rune(username)) > 100 {
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username = string([]rune(username)[:100])
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}
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user, err := s.userRepo.GetByEmail(ctx, email)
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if err != nil {
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if errors.Is(err, ErrUserNotFound) {
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// OAuth 首次登录视为注册（fail-close：settingService 未配置时不允许注册）
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if s.settingService == nil || !s.settingService.IsRegistrationEnabled(ctx) {
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return "", nil, ErrRegDisabled
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}
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randomPassword, err := randomHexString(32)
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if err != nil {
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log.Printf("[Auth] Failed to generate random password for oauth signup: %v", err)
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return "", nil, ErrServiceUnavailable
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}
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hashedPassword, err := s.HashPassword(randomPassword)
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if err != nil {
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return "", nil, fmt.Errorf("hash password: %w", err)
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}
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// 新用户默认值。
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defaultBalance := s.cfg.Default.UserBalance
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defaultConcurrency := s.cfg.Default.UserConcurrency
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if s.settingService != nil {
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defaultBalance = s.settingService.GetDefaultBalance(ctx)
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defaultConcurrency = s.settingService.GetDefaultConcurrency(ctx)
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}
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newUser := &User{
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Email: email,
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Username: username,
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PasswordHash: hashedPassword,
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Role: RoleUser,
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Balance: defaultBalance,
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Concurrency: defaultConcurrency,
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Status: StatusActive,
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}
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if err := s.userRepo.Create(ctx, newUser); err != nil {
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if errors.Is(err, ErrEmailExists) {
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// 并发场景：GetByEmail 与 Create 之间用户被创建。
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user, err = s.userRepo.GetByEmail(ctx, email)
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if err != nil {
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log.Printf("[Auth] Database error getting user after conflict: %v", err)
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return "", nil, ErrServiceUnavailable
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}
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} else {
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log.Printf("[Auth] Database error creating oauth user: %v", err)
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return "", nil, ErrServiceUnavailable
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}
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} else {
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user = newUser
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}
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} else {
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log.Printf("[Auth] Database error during oauth login: %v", err)
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return "", nil, ErrServiceUnavailable
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}
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}
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if !user.IsActive() {
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return "", nil, ErrUserNotActive
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}
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// 尽力补全：当用户名为空时，使用第三方返回的用户名回填。
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if user.Username == "" && username != "" {
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user.Username = username
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if err := s.userRepo.Update(ctx, user); err != nil {
|
||||
log.Printf("[Auth] Failed to update username after oauth login: %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
token, err := s.GenerateToken(user)
|
||||
if err != nil {
|
||||
return "", nil, fmt.Errorf("generate token: %w", err)
|
||||
}
|
||||
return token, user, nil
|
||||
}
|
||||
|
||||
// ValidateToken 验证JWT token并返回用户声明
|
||||
func (s *AuthService) ValidateToken(tokenString string) (*JWTClaims, error) {
|
||||
// 先做长度校验，尽早拒绝异常超长 token，降低 DoS 风险。
|
||||
if len(tokenString) > maxTokenLength {
|
||||
return nil, ErrTokenTooLarge
|
||||
}
|
||||
|
||||
// 使用解析器并限制可接受的签名算法，防止算法混淆。
|
||||
parser := jwt.NewParser(jwt.WithValidMethods([]string{
|
||||
jwt.SigningMethodHS256.Name,
|
||||
jwt.SigningMethodHS384.Name,
|
||||
jwt.SigningMethodHS512.Name,
|
||||
}))
|
||||
|
||||
// 保留默认 claims 校验（exp/nbf），避免放行过期或未生效的 token。
|
||||
token, err := parser.ParseWithClaims(tokenString, &JWTClaims{}, func(token *jwt.Token) (any, error) {
|
||||
// 验证签名方法
|
||||
if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
|
||||
return nil, fmt.Errorf("unexpected signing method: %v", token.Header["alg"])
|
||||
}
|
||||
return []byte(s.cfg.JWT.Secret), nil
|
||||
})
|
||||
|
||||
if err != nil {
|
||||
if errors.Is(err, jwt.ErrTokenExpired) {
|
||||
// token 过期但仍返回 claims（用于 RefreshToken 等场景）
|
||||
// jwt-go 在解析时即使遇到过期错误，token.Claims 仍会被填充
|
||||
if claims, ok := token.Claims.(*JWTClaims); ok {
|
||||
return claims, ErrTokenExpired
|
||||
}
|
||||
return nil, ErrTokenExpired
|
||||
}
|
||||
return nil, ErrInvalidToken
|
||||
}
|
||||
|
||||
if claims, ok := token.Claims.(*JWTClaims); ok && token.Valid {
|
||||
return claims, nil
|
||||
}
|
||||
|
||||
return nil, ErrInvalidToken
|
||||
}
|
||||
|
||||
func randomHexString(byteLength int) (string, error) {
|
||||
if byteLength <= 0 {
|
||||
byteLength = 16
|
||||
}
|
||||
buf := make([]byte, byteLength)
|
||||
if _, err := rand.Read(buf); err != nil {
|
||||
return "", err
|
||||
}
|
||||
return hex.EncodeToString(buf), nil
|
||||
}
|
||||
|
||||
func isReservedEmail(email string) bool {
|
||||
normalized := strings.ToLower(strings.TrimSpace(email))
|
||||
return strings.HasSuffix(normalized, LinuxDoConnectSyntheticEmailDomain)
|
||||
}
|
||||
|
||||
// GenerateToken 生成JWT token
|
||||
func (s *AuthService) GenerateToken(user *User) (string, error) {
|
||||
now := time.Now()
|
||||
expiresAt := now.Add(time.Duration(s.cfg.JWT.ExpireHour) * time.Hour)
|
||||
|
||||
claims := &JWTClaims{
|
||||
UserID: user.ID,
|
||||
Email: user.Email,
|
||||
Role: user.Role,
|
||||
TokenVersion: user.TokenVersion,
|
||||
RegisteredClaims: jwt.RegisteredClaims{
|
||||
ExpiresAt: jwt.NewNumericDate(expiresAt),
|
||||
IssuedAt: jwt.NewNumericDate(now),
|
||||
NotBefore: jwt.NewNumericDate(now),
|
||||
},
|
||||
}
|
||||
|
||||
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
|
||||
tokenString, err := token.SignedString([]byte(s.cfg.JWT.Secret))
|
||||
if err != nil {
|
||||
return "", fmt.Errorf("sign token: %w", err)
|
||||
}
|
||||
|
||||
return tokenString, nil
|
||||
}
|
||||
|
||||
// HashPassword 使用bcrypt加密密码
|
||||
func (s *AuthService) HashPassword(password string) (string, error) {
|
||||
hashedBytes, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
return string(hashedBytes), nil
|
||||
}
|
||||
|
||||
// CheckPassword 验证密码是否匹配
|
||||
func (s *AuthService) CheckPassword(password, hashedPassword string) bool {
|
||||
err := bcrypt.CompareHashAndPassword([]byte(hashedPassword), []byte(password))
|
||||
return err == nil
|
||||
}
|
||||
|
||||
// RefreshToken 刷新token
|
||||
func (s *AuthService) RefreshToken(ctx context.Context, oldTokenString string) (string, error) {
|
||||
// 验证旧token（即使过期也允许，用于刷新）
|
||||
claims, err := s.ValidateToken(oldTokenString)
|
||||
if err != nil && !errors.Is(err, ErrTokenExpired) {
|
||||
return "", err
|
||||
}
|
||||
|
||||
// 获取最新的用户信息
|
||||
user, err := s.userRepo.GetByID(ctx, claims.UserID)
|
||||
if err != nil {
|
||||
if errors.Is(err, ErrUserNotFound) {
|
||||
return "", ErrInvalidToken
|
||||
}
|
||||
log.Printf("[Auth] Database error refreshing token: %v", err)
|
||||
return "", ErrServiceUnavailable
|
||||
}
|
||||
|
||||
// 检查用户状态
|
||||
if !user.IsActive() {
|
||||
return "", ErrUserNotActive
|
||||
}
|
||||
|
||||
// Security: Check TokenVersion to prevent refreshing revoked tokens
|
||||
// This ensures tokens issued before a password change cannot be refreshed
|
||||
if claims.TokenVersion != user.TokenVersion {
|
||||
return "", ErrTokenRevoked
|
||||
}
|
||||
|
||||
// 生成新token
|
||||
return s.GenerateToken(user)
|
||||
}
|
||||
Reference in New Issue
Block a user