1// Copyright 2021 The Gitea Authors. All rights reserved.
2// Use of this source code is governed by a MIT-style
3// license that can be found in the LICENSE file.
4
5package ldap
6
7import (
8	"fmt"
9	"strings"
10
11	asymkey_model "code.gitea.io/gitea/models/asymkey"
12	"code.gitea.io/gitea/models/auth"
13	"code.gitea.io/gitea/models/db"
14	user_model "code.gitea.io/gitea/models/user"
15	"code.gitea.io/gitea/services/mailer"
16	user_service "code.gitea.io/gitea/services/user"
17)
18
19// Authenticate queries if login/password is valid against the LDAP directory pool,
20// and create a local user if success when enabled.
21func (source *Source) Authenticate(user *user_model.User, userName, password string) (*user_model.User, error) {
22	loginName := userName
23	if user != nil {
24		loginName = user.LoginName
25	}
26	sr := source.SearchEntry(loginName, password, source.authSource.Type == auth.DLDAP)
27	if sr == nil {
28		// User not in LDAP, do nothing
29		return nil, user_model.ErrUserNotExist{Name: loginName}
30	}
31
32	isAttributeSSHPublicKeySet := len(strings.TrimSpace(source.AttributeSSHPublicKey)) > 0
33
34	// Update User admin flag if exist
35	if isExist, err := user_model.IsUserExist(0, sr.Username); err != nil {
36		return nil, err
37	} else if isExist {
38		if user == nil {
39			user, err = user_model.GetUserByName(sr.Username)
40			if err != nil {
41				return nil, err
42			}
43		}
44		if user != nil && !user.ProhibitLogin {
45			cols := make([]string, 0)
46			if len(source.AdminFilter) > 0 && user.IsAdmin != sr.IsAdmin {
47				// Change existing admin flag only if AdminFilter option is set
48				user.IsAdmin = sr.IsAdmin
49				cols = append(cols, "is_admin")
50			}
51			if !user.IsAdmin && len(source.RestrictedFilter) > 0 && user.IsRestricted != sr.IsRestricted {
52				// Change existing restricted flag only if RestrictedFilter option is set
53				user.IsRestricted = sr.IsRestricted
54				cols = append(cols, "is_restricted")
55			}
56			if len(cols) > 0 {
57				err = user_model.UpdateUserCols(db.DefaultContext, user, cols...)
58				if err != nil {
59					return nil, err
60				}
61			}
62		}
63	}
64
65	if user != nil {
66		if isAttributeSSHPublicKeySet && asymkey_model.SynchronizePublicKeys(user, source.authSource, sr.SSHPublicKey) {
67			return user, asymkey_model.RewriteAllPublicKeys()
68		}
69
70		return user, nil
71	}
72
73	// Fallback.
74	if len(sr.Username) == 0 {
75		sr.Username = userName
76	}
77
78	if len(sr.Mail) == 0 {
79		sr.Mail = fmt.Sprintf("%s@localhost", sr.Username)
80	}
81
82	user = &user_model.User{
83		LowerName:    strings.ToLower(sr.Username),
84		Name:         sr.Username,
85		FullName:     composeFullName(sr.Name, sr.Surname, sr.Username),
86		Email:        sr.Mail,
87		LoginType:    source.authSource.Type,
88		LoginSource:  source.authSource.ID,
89		LoginName:    userName,
90		IsActive:     true,
91		IsAdmin:      sr.IsAdmin,
92		IsRestricted: sr.IsRestricted,
93	}
94
95	err := user_model.CreateUser(user)
96	if err != nil {
97		return user, err
98	}
99
100	mailer.SendRegisterNotifyMail(user)
101
102	if isAttributeSSHPublicKeySet && asymkey_model.AddPublicKeysBySource(user, source.authSource, sr.SSHPublicKey) {
103		err = asymkey_model.RewriteAllPublicKeys()
104	}
105
106	if err == nil && len(source.AttributeAvatar) > 0 {
107		_ = user_service.UploadAvatar(user, sr.Avatar)
108	}
109
110	return user, err
111}
112
113// IsSkipLocalTwoFA returns if this source should skip local 2fa for password authentication
114func (source *Source) IsSkipLocalTwoFA() bool {
115	return source.SkipLocalTwoFA
116}
117