93 lines
1.9 KiB
Go
93 lines
1.9 KiB
Go
// Package auth provides authentication and session management functionality.
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// It includes secure session storage with in-memory caching and JSON persistence,
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// user authentication against the database, and secure cookie handling.
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package auth
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import (
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"dk/internal/password"
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"dk/internal/session"
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"dk/internal/users"
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)
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var Manager *AuthManager
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type AuthManager struct {
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store *session.Store
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}
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func Init(sessionsFilePath string) {
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Manager = &AuthManager{
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store: session.NewStore(sessionsFilePath),
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}
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}
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func (am *AuthManager) Authenticate(usernameOrEmail, plainPassword string) (*users.User, error) {
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var user *users.User
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var err error
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user, err = users.ByUsername(usernameOrEmail)
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if err != nil {
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user, err = users.ByEmail(usernameOrEmail)
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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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isValid, err := password.Verify(plainPassword, user.Password)
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if err != nil {
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return nil, err
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}
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if !isValid {
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return nil, ErrInvalidCredentials
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}
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return user, nil
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}
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func (am *AuthManager) CreateSession(user *users.User) *session.Session {
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sess := session.New(user.ID, user.Username, user.Email)
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am.store.Save(sess)
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return sess
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}
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func (am *AuthManager) GetSession(sessionID string) (*session.Session, bool) {
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return am.store.Get(sessionID)
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}
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func (am *AuthManager) UpdateSession(sessionID string) bool {
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sess, exists := am.store.Get(sessionID)
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if !exists {
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return false
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}
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sess.Touch()
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am.store.Save(sess)
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return true
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}
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func (am *AuthManager) DeleteSession(sessionID string) {
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am.store.Delete(sessionID)
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}
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func (am *AuthManager) SessionStats() (total, active int) {
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return am.store.Stats()
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}
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func (am *AuthManager) Close() error {
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return am.store.Close()
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}
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var (
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ErrInvalidCredentials = &AuthError{"invalid username/email or password"}
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ErrSessionNotFound = &AuthError{"session not found"}
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ErrSessionExpired = &AuthError{"session expired"}
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)
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type AuthError struct {
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Message string
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}
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func (e *AuthError) Error() string {
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return e.Message
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}
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