353 lines
9.3 KiB
Go
353 lines
9.3 KiB
Go
package service
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import (
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"crypto/rand"
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"crypto/sha256"
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"encoding/hex"
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"errors"
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"log"
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"net/mail"
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"regexp"
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"strings"
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"time"
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"infinite-canvas/backend/internal/model"
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"golang.org/x/crypto/bcrypt"
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"gorm.io/gorm"
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)
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const SessionCookieName = "open_ai_canvas_session"
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const sessionMaxAge = 30 * 24 * time.Hour
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var usernamePattern = regexp.MustCompile(`^[a-zA-Z0-9_-]{3,32}$`)
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// AuthError 保留为兼容别名；跨认证域的新代码应直接使用 AppError。
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type AuthError = AppError
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type RegisterRequest struct {
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Username string `json:"username"`
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Email string `json:"email"`
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EmailCode string `json:"emailCode"`
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DisplayName string `json:"displayName"`
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Password string `json:"password"`
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}
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type LoginRequest struct {
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Username string `json:"username"`
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Password string `json:"password"`
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}
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type PublicAuthSettings struct {
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FirstUser bool `json:"firstUser"`
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RegistrationEnabled bool `json:"registrationEnabled"`
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LinuxDOEnabled bool `json:"linuxdoEnabled"`
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EmailEnabled bool `json:"emailEnabled"`
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EmailCodeRequired bool `json:"emailCodeRequired"`
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}
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type AuthSessionResult struct {
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User AuthUser `json:"user"`
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Session string `json:"session"`
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MaxAgeSecs int `json:"maxAgeSecs"`
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}
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type AuthUser struct {
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model.User
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AvatarURL string `json:"avatarUrl,omitempty"`
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IdentityProvider string `json:"identityProvider,omitempty"`
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IdentityID string `json:"identityId,omitempty"`
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IdentityUsername string `json:"identityUsername,omitempty"`
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}
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func BadAuthRequest(message string) *AuthError {
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return NewAppError(400, message)
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}
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func NotFound(message string) *AuthError {
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return NewAppError(404, message)
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}
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func Unauthorized(message string) *AuthError {
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return NewAppError(401, message)
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}
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func Forbidden(message string) *AuthError {
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return NewAppError(403, message)
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}
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func (s *Service) PublicAuthSettings() (*PublicAuthSettings, error) {
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count, err := s.repo.UserCount()
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if err != nil {
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return nil, err
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}
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if count == 0 {
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return &PublicAuthSettings{FirstUser: true, RegistrationEnabled: true, LinuxDOEnabled: false}, nil
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}
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registrationEnabled, err := s.RegistrationEnabled()
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if err != nil {
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return nil, err
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}
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emailEnabled, err := s.EmailEnabled()
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if err != nil {
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return nil, err
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}
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return &PublicAuthSettings{FirstUser: false, RegistrationEnabled: registrationEnabled, LinuxDOEnabled: s.LinuxDOEnabled(), EmailEnabled: emailEnabled, EmailCodeRequired: true}, nil
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}
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func (s *Service) Register(req RegisterRequest) (*AuthSessionResult, error) {
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username := normalizeUsername(req.Username)
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email := normalizeEmail(req.Email)
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displayName := normalizeDisplayName(req.DisplayName, username)
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if err := validateUsername(username); err != nil {
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return nil, err
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}
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if err := validatePassword(req.Password); err != nil {
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return nil, err
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}
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if email != "" {
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if err := validateEmail(email); err != nil {
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return nil, err
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}
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}
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s.registrationMu.Lock()
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defer s.registrationMu.Unlock()
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count, err := s.repo.UserCount()
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if err != nil {
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return nil, err
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}
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var verifiedCode *model.EmailVerificationCode
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if count > 0 {
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registrationEnabled, err := s.RegistrationEnabled()
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if err != nil {
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return nil, err
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}
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if !registrationEnabled {
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return nil, Forbidden("管理员未开放新用户注册")
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}
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if email == "" {
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return nil, BadAuthRequest("请输入邮箱")
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}
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verifiedCode, err = s.VerifyRegistrationEmailCode(email, req.EmailCode)
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if err != nil {
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return nil, err
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}
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}
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if _, err := s.repo.UserByUsername(username); err == nil {
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return nil, BadAuthRequest("用户名已存在")
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} else if !errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, err
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}
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if email != "" {
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if _, err := s.repo.UserByEmail(email); err == nil {
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return nil, BadAuthRequest("邮箱已被注册")
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} else if !errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, err
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}
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}
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passwordHash, err := hashPassword(req.Password)
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if err != nil {
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return nil, err
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}
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now := time.Now()
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user := model.User{
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ID: newID(),
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Username: username,
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Email: email,
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DisplayName: displayName,
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Role: model.UserRoleUser,
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Status: model.UserStatusActive,
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PasswordHash: passwordHash,
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CreatedAt: now,
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UpdatedAt: now,
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}
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if count == 0 {
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user.Role = model.UserRoleAdmin
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}
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if verifiedCode != nil {
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if err := s.repo.CreateUserWithEmailVerification(&user, verifiedCode.ID, time.Now()); err != nil {
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return nil, err
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}
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} else if err := s.repo.Create(&user); err != nil {
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return nil, err
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}
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if err := s.ensureSignupBonus(user.ID); err != nil {
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return nil, err
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}
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return s.createAuthSession(&user)
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}
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func (s *Service) Login(req LoginRequest) (*AuthSessionResult, error) {
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account := strings.TrimSpace(req.Username)
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user, err := s.repo.UserByAccount(account)
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if err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, Unauthorized("用户名、邮箱或密码不正确")
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}
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return nil, err
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}
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if user.Status != model.UserStatusActive {
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return nil, Forbidden("该账号已被禁用")
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}
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if !verifyPassword(req.Password, user.PasswordHash) {
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return nil, Unauthorized("用户名、邮箱或密码不正确")
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}
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now := time.Now()
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user.LastLoginAt = &now
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user.UpdatedAt = now
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if err := s.repo.Save(user); err != nil {
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return nil, err
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}
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if err := s.ensureSignupBonus(user.ID); err != nil {
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return nil, err
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}
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s.recordActivity(user.ID, "login", 1)
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return s.createAuthSession(user)
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}
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func (s *Service) Logout(cookieValue string) error {
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sessionID, _ := parseSessionCookie(cookieValue)
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if sessionID == "" {
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return nil
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}
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return s.repo.DeleteAuthSession(sessionID)
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}
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func (s *Service) CurrentUser(cookieValue string) (*model.User, error) {
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sessionID, token := parseSessionCookie(cookieValue)
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if sessionID == "" || token == "" {
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return nil, Unauthorized("请先登录")
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}
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session, err := s.repo.AuthSession(sessionID)
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if err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, Unauthorized("登录状态已失效")
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}
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return nil, err
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}
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if time.Now().After(session.ExpiresAt) || session.TokenHash != hashToken(token) {
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if cleanupErr := s.repo.DeleteAuthSession(sessionID); cleanupErr != nil {
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log.Printf("expired auth session cleanup failed: session_id=%s error=%v", sessionID, cleanupErr)
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}
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return nil, Unauthorized("登录状态已失效")
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}
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user, err := s.repo.User(session.UserID)
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if err != nil {
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return nil, err
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}
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if user.Status != model.UserStatusActive {
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return nil, Forbidden("该账号已被禁用")
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}
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return user, nil
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}
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// 认证响应只补充当前用户自己的第三方公开身份，不把身份表或密钥字段暴露给其他列表接口。
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func (s *Service) PublicAuthUser(user *model.User) (AuthUser, error) {
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result := AuthUser{User: *user}
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identity, err := s.repo.UserIdentityForUser(user.ID, "linuxdo")
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return result, nil
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}
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if err != nil {
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return AuthUser{}, err
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}
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result.AvatarURL = identity.AvatarURL
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result.IdentityProvider = identity.Provider
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result.IdentityID = identity.Subject
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result.IdentityUsername = identity.ProviderUsername
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return result, nil
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}
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func (s *Service) createAuthSession(user *model.User) (*AuthSessionResult, error) {
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publicUser, err := s.PublicAuthUser(user)
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if err != nil {
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return nil, err
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}
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token := randomToken()
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now := time.Now()
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session := model.AuthSession{
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ID: newID(),
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UserID: user.ID,
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TokenHash: hashToken(token),
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ExpiresAt: now.Add(sessionMaxAge),
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CreatedAt: now,
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UpdatedAt: now,
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}
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if err := s.repo.Create(&session); err != nil {
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return nil, err
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}
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return &AuthSessionResult{User: publicUser, Session: session.ID + "." + token, MaxAgeSecs: int(sessionMaxAge.Seconds())}, nil
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}
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func hashPassword(password string) (string, error) {
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hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
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return string(hash), err
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}
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func verifyPassword(password string, hash string) bool {
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return bcrypt.CompareHashAndPassword([]byte(hash), []byte(password)) == nil
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}
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func hashToken(token string) string {
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sum := sha256.Sum256([]byte(token))
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return hex.EncodeToString(sum[:])
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}
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func randomToken() string {
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var b [32]byte
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if _, err := rand.Read(b[:]); err != nil {
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return newID() + newID()
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}
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return hex.EncodeToString(b[:])
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}
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func parseSessionCookie(value string) (string, string) {
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parts := strings.SplitN(value, ".", 2)
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if len(parts) != 2 {
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return "", ""
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}
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return strings.TrimSpace(parts[0]), strings.TrimSpace(parts[1])
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}
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func normalizeUsername(value string) string {
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return strings.TrimSpace(value)
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}
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func normalizeEmail(value string) string {
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return strings.ToLower(strings.TrimSpace(value))
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}
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func normalizeDisplayName(value string, fallback string) string {
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value = strings.TrimSpace(value)
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if value == "" {
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value = fallback
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}
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runes := []rune(value)
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if len(runes) > 40 {
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value = string(runes[:40])
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}
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return value
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}
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func validateUsername(value string) error {
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if !usernamePattern.MatchString(value) {
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return BadAuthRequest("用户名需为 3-32 位字母、数字、下划线或连字符")
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}
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return nil
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}
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func validatePassword(value string) error {
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if len([]rune(value)) < 8 {
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return BadAuthRequest("密码至少 8 位")
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}
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return nil
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}
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func validateEmail(value string) error {
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if _, err := mail.ParseAddress(value); err != nil {
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return BadAuthRequest("邮箱格式不正确")
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}
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return nil
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}
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