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78 lines
2.1 KiB
78 lines
2.1 KiB
// Copyright 2021 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package smtp
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import (
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"errors"
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"net/smtp"
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"net/textproto"
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"strings"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/util"
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)
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// Authenticate queries if the provided login/password is authenticates against the SMTP server
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// Users will be autoregistered as required
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func (source *Source) Authenticate(user *models.User, login, password string) (*models.User, error) {
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// Verify allowed domains.
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if len(source.AllowedDomains) > 0 {
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idx := strings.Index(login, "@")
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if idx == -1 {
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return nil, models.ErrUserNotExist{Name: login}
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} else if !util.IsStringInSlice(login[idx+1:], strings.Split(source.AllowedDomains, ","), true) {
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return nil, models.ErrUserNotExist{Name: login}
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}
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}
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var auth smtp.Auth
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switch source.Auth {
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case PlainAuthentication:
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auth = smtp.PlainAuth("", login, password, source.Host)
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case LoginAuthentication:
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auth = &loginAuthenticator{login, password}
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case CRAMMD5Authentication:
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auth = smtp.CRAMMD5Auth(login, password)
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default:
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return nil, errors.New("unsupported SMTP auth type")
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}
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if err := Authenticate(auth, source); err != nil {
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// Check standard error format first,
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// then fallback to worse case.
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tperr, ok := err.(*textproto.Error)
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if (ok && tperr.Code == 535) ||
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strings.Contains(err.Error(), "Username and Password not accepted") {
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return nil, models.ErrUserNotExist{Name: login}
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}
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if (ok && tperr.Code == 534) ||
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strings.Contains(err.Error(), "Application-specific password required") {
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return nil, models.ErrUserNotExist{Name: login}
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}
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return nil, err
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}
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if user != nil {
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return user, nil
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}
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username := login
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idx := strings.Index(login, "@")
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if idx > -1 {
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username = login[:idx]
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}
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user = &models.User{
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LowerName: strings.ToLower(username),
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Name: strings.ToLower(username),
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Email: login,
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Passwd: password,
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LoginType: models.LoginSMTP,
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LoginSource: source.loginSource.ID,
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LoginName: login,
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IsActive: true,
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}
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return user, models.CreateUser(user)
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}
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