gitea/services/auth/source/pam/source_authenticate.go
techknowlogick f183783baa
Save initial signup information for users to aid in spam prevention (#31852)
This will allow instance admins to view signup pattern patterns for
public instances. It is modelled after discourse, mastodon, and
MediaWiki's approaches.

Note: This has privacy implications, but as the above-stated open-source
projects take this approach, especially MediaWiki, which I have no doubt
looked into this thoroughly, it is likely okay for us, too. However, I
would be appreciative of any feedback on how this could be improved.

---------

Co-authored-by: Giteabot <teabot@gitea.io>
2024-09-09 17:05:16 -04:00

77 lines
2.0 KiB
Go

// Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package pam
import (
"context"
"fmt"
"strings"
"code.gitea.io/gitea/models/auth"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/auth/pam"
"code.gitea.io/gitea/modules/optional"
"code.gitea.io/gitea/modules/setting"
"github.com/google/uuid"
)
// Authenticate queries if login/password is valid against the PAM,
// and create a local user if success when enabled.
func (source *Source) Authenticate(ctx context.Context, user *user_model.User, userName, password string) (*user_model.User, error) {
pamLogin, err := pam.Auth(source.ServiceName, userName, password)
if err != nil {
if strings.Contains(err.Error(), "Authentication failure") {
return nil, user_model.ErrUserNotExist{Name: userName}
}
return nil, err
}
if user != nil {
return user, nil
}
// Allow PAM sources with `@` in their name, like from Active Directory
username := pamLogin
email := pamLogin
idx := strings.Index(pamLogin, "@")
if idx > -1 {
username = pamLogin[:idx]
}
if user_model.ValidateEmail(email) != nil {
if source.EmailDomain != "" {
email = fmt.Sprintf("%s@%s", username, source.EmailDomain)
} else {
email = fmt.Sprintf("%s@%s", username, setting.Service.NoReplyAddress)
}
if user_model.ValidateEmail(email) != nil {
email = uuid.New().String() + "@localhost"
}
}
user = &user_model.User{
LowerName: strings.ToLower(username),
Name: username,
Email: email,
Passwd: password,
LoginType: auth.PAM,
LoginSource: source.authSource.ID,
LoginName: userName, // This is what the user typed in
}
overwriteDefault := &user_model.CreateUserOverwriteOptions{
IsActive: optional.Some(true),
}
if err := user_model.CreateUser(ctx, user, &user_model.Meta{}, overwriteDefault); err != nil {
return user, err
}
return user, nil
}
// IsSkipLocalTwoFA returns if this source should skip local 2fa for password authentication
func (source *Source) IsSkipLocalTwoFA() bool {
return source.SkipLocalTwoFA
}