4 * Name: LDAP Authenticate
5 * Description: Authenticate a user against an LDAP directory
7 * Author: Mike Macgirvin <http://macgirvin.com/profile/mike>
14 * Module: LDAP Authenticate
16 * Authenticate a user against an LDAP directory
17 * Useful for Windows Active Directory and other LDAP-based organisations
18 * to maintain a single password across the organisation.
20 * Optionally authenticates only if a member of a given group in the directory.
22 * By default, the person must have registered with Friendica using the normal registration
23 * procedures in order to have a Friendica user record, contact, and profile.
24 * However, it's possible with an option to automate the creation of a Friendica basic account.
26 * Note when using with Windows Active Directory: you may need to set TLS_CACERT in your site
27 * ldap.conf file to the signing cert for your LDAP server.
29 * The configuration options for this module may be set in the .htconfig.php file
32 * // ldap hostname server - required
33 * $a->config['ldapauth']['ldap_server'] = 'host.example.com';
34 * // dn to search users - required
35 * $a->config['ldapauth']['ldap_searchdn'] = 'ou=users,dc=example,dc=com';
36 * // attribute to find username - required
37 * $a->config['ldapauth']['ldap_userattr'] = 'uid';
39 * // admin dn - optional - only if ldap server dont have anonymous access
40 * $a->config['ldapauth']['ldap_binddn'] = 'cn=admin,dc=example,dc=com';
41 * // admin password - optional - only if ldap server dont have anonymous access
42 * $a->config['ldapauth']['ldap_bindpw'] = 'password';
44 * // for create Friendica account if user exist in ldap
45 * // required an email and a simple (beautiful) nickname on user ldap object
46 * // active account creation - optional - default none
47 * $a->config['ldapauth']['ldap_autocreateaccount'] = 'true';
48 * // attribute to get email - optional - default : 'mail'
49 * $a->config['ldapauth']['ldap_autocreateaccount_emailattribute'] = 'mail';
50 * // attribute to get nickname - optional - default : 'givenName'
51 * $a->config['ldapauth']['ldap_autocreateaccount_nameattribute'] = 'cn';
55 use Friendica\Core\Config;
56 use Friendica\Model\User;
58 function ldapauth_install()
60 register_hook('authenticate', 'addon/ldapauth/ldapauth.php', 'ldapauth_hook_authenticate');
63 function ldapauth_uninstall()
65 unregister_hook('authenticate', 'addon/ldapauth/ldapauth.php', 'ldapauth_hook_authenticate');
68 function ldapauth_hook_authenticate($a, &$b)
70 if (ldapauth_authenticate($b['username'], $b['password'])) {
71 $results = get_existing_account($b['username']);
72 if (!empty($results)) {
73 $b['user_record'] = $results[0];
74 $b['authenticated'] = 1;
80 function ldapauth_authenticate($username, $password)
82 $ldap_server = Config::get('ldapauth', 'ldap_server');
83 $ldap_binddn = Config::get('ldapauth', 'ldap_binddn');
84 $ldap_bindpw = Config::get('ldapauth', 'ldap_bindpw');
85 $ldap_searchdn = Config::get('ldapauth', 'ldap_searchdn');
86 $ldap_userattr = Config::get('ldapauth', 'ldap_userattr');
87 $ldap_group = Config::get('ldapauth', 'ldap_group');
88 $ldap_autocreateaccount = Config::get('ldapauth', 'ldap_autocreateaccount');
89 $ldap_autocreateaccount_emailattribute = Config::get('ldapauth', 'ldap_autocreateaccount_emailattribute');
90 $ldap_autocreateaccount_nameattribute = Config::get('ldapauth', 'ldap_autocreateaccount_nameattribute');
92 if (!(strlen($password) && function_exists('ldap_connect') && strlen($ldap_server))) {
93 logger("ldapauth: not configured or missing php-ldap module");
97 $connect = @ldap_connect($ldap_server);
99 if ($connect === false) {
100 logger("ldapauth: could not connect to $ldap_server");
104 @ldap_set_option($connect, LDAP_OPT_PROTOCOL_VERSION, 3);
105 @ldap_set_option($connect, LDAP_OPT_REFERRALS, 0);
106 if ((@ldap_bind($connect, $ldap_binddn, $ldap_bindpw)) === false) {
107 logger("ldapauth: could not bind $ldap_server as $ldap_binddn");
111 $res = @ldap_search($connect, $ldap_searchdn, $ldap_userattr . '=' . $username);
114 logger("ldapauth: $ldap_userattr=$username,$ldap_searchdn not found");
118 $id = @ldap_first_entry($connect, $res);
124 $dn = @ldap_get_dn($connect, $id);
126 if (!@ldap_bind($connect, $dn, $password)) {
132 if ($ldap_autocreateaccount == "true") {
133 if (!strlen($ldap_autocreateaccount_emailattribute)) {
134 $ldap_autocreateaccount_emailattribute = "mail";
136 if (!strlen($ldap_autocreateaccount_nameattribute)) {
137 $ldap_autocreateaccount_nameattribute = "givenName";
139 $emailarray = @ldap_get_values($connect, $id, $ldap_autocreateaccount_emailattribute);
140 $namearray = @ldap_get_values($connect, $id, $ldap_autocreateaccount_nameattribute);
143 if (!strlen($ldap_group)) {
144 ldap_autocreateaccount($ldap_autocreateaccount, $username, $password, $emailarray[0], $namearray[0]);
148 $r = @ldap_compare($connect, $ldap_group, 'member', $dn);
150 $err = @ldap_error($connect);
151 $eno = @ldap_errno($connect);
152 @ldap_close($connect);
155 logger("ldapauth: access control group Does Not Exist");
157 } elseif ($eno === 16) {
158 logger('ldapauth: membership attribute does not exist in access control group');
161 logger('ldapauth: error: ' . $err);
164 } elseif ($r === false) {
165 @ldap_close($connect);
169 ldap_autocreateaccount($ldap_autocreateaccount, $username, $password, $emailarray[0], $namearray[0]);
173 function ldap_autocreateaccount($ldap_autocreateaccount, $username, $password, $email, $name)
175 if ($ldap_autocreateaccount == "true") {
176 $results = get_existing_account($username);
177 if (empty($results)) {
178 if (strlen($email) > 0 && strlen($name) > 0) {
179 $arr = array('username' => $name, 'nickname' => $username, 'email' => $email, 'password' => $password, 'verified' => 1);
183 logger("ldapauth: account " . $username . " created");
184 } catch (Exception $ex) {
185 logger("ldapauth: account " . $username . " was not created ! : " . $ex->getMessage());
188 logger("ldapauth: unable to create account, no email or nickname found");
194 function get_existing_account($username)
196 return q("SELECT * FROM `user` WHERE `nickname` = '%s' AND `blocked` = 0 AND `verified` = 1 LIMIT 1", $username);