206 lines
6.6 KiB
PHP
206 lines
6.6 KiB
PHP
<?php
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/**
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* Name: LDAP Authenticate
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* Description: Authenticate a user against an LDAP directory
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* Version: 1.1
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* Author: Mike Macgirvin <http://macgirvin.com/profile/mike>
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* Author: aymhce
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*/
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/**
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* Friendica addon
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*
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* Module: LDAP Authenticate
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*
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* Authenticate a user against an LDAP directory
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* Useful for Windows Active Directory and other LDAP-based organisations
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* to maintain a single password across the organisation.
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*
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* Optionally authenticates only if a member of a given group in the directory.
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*
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* By default, the person must have registered with Friendica using the normal registration
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* procedures in order to have a Friendica user record, contact, and profile.
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* However, it's possible with an option to automate the creation of a Friendica basic account.
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*
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* Note when using with Windows Active Directory: you may need to set TLS_CACERT in your site
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* ldap.conf file to the signing cert for your LDAP server.
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*
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* The configuration options for this module may be set in the config/local.ini.php file
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* e.g.:
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*
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* [ldapauth]
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* ; ldap hostname server - required
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* ldap_server = host.example.com
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* ; dn to search users - required
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* ldap_searchdn = ou=users,dc=example,dc=com
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* ; attribute to find username - required
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* ldap_userattr = uid
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*
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* ; admin dn - optional - only if ldap server dont have anonymous access
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* ldap_binddn = cn=admin,dc=example,dc=com
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* ; admin password - optional - only if ldap server dont have anonymous access
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* ldap_bindpw = password
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*
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* ; for create Friendica account if user exist in ldap
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* ; required an email and a simple (beautiful) nickname on user ldap object
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* ; active account creation - optional - default none
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* ldap_autocreateaccount = true
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* ; attribute to get email - optional - default : 'mail'
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* ldap_autocreateaccount_emailattribute = mail
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* ; attribute to get nickname - optional - default : 'givenName'
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* ldap_autocreateaccount_nameattribute = cn
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*
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* ...etc.
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*/
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use Friendica\Core\Addon;
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use Friendica\Core\Config;
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use Friendica\Model\User;
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function ldapauth_install()
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{
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Addon::registerHook('load_config', 'addon/ldapauth/ldapauth.php', 'ldapauth_load_config');
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Addon::registerHook('authenticate', 'addon/ldapauth/ldapauth.php', 'ldapauth_hook_authenticate');
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}
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function ldapauth_uninstall()
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{
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Addon::unregisterHook('load_config', 'addon/ldapauth/ldapauth.php', 'ldapauth_load_config');
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Addon::unregisterHook('authenticate', 'addon/ldapauth/ldapauth.php', 'ldapauth_hook_authenticate');
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}
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function ldapauth_load_config(\Friendica\App $a)
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{
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$a->loadConfigFile(__DIR__. '/config/ldapauth.ini.php');
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}
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function ldapauth_hook_authenticate($a, &$b)
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{
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if (ldapauth_authenticate($b['username'], $b['password'])) {
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$results = get_existing_account($b['username']);
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if (!empty($results)) {
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$b['user_record'] = $results[0];
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$b['authenticated'] = 1;
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}
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}
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return;
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}
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function ldapauth_authenticate($username, $password)
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{
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$ldap_server = Config::get('ldapauth', 'ldap_server');
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$ldap_binddn = Config::get('ldapauth', 'ldap_binddn');
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$ldap_bindpw = Config::get('ldapauth', 'ldap_bindpw');
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$ldap_searchdn = Config::get('ldapauth', 'ldap_searchdn');
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$ldap_userattr = Config::get('ldapauth', 'ldap_userattr');
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$ldap_group = Config::get('ldapauth', 'ldap_group');
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$ldap_autocreateaccount = Config::get('ldapauth', 'ldap_autocreateaccount');
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$ldap_autocreateaccount_emailattribute = Config::get('ldapauth', 'ldap_autocreateaccount_emailattribute');
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$ldap_autocreateaccount_nameattribute = Config::get('ldapauth', 'ldap_autocreateaccount_nameattribute');
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if (!(strlen($password) && function_exists('ldap_connect') && strlen($ldap_server))) {
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logger("ldapauth: not configured or missing php-ldap module");
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return false;
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}
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$connect = @ldap_connect($ldap_server);
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if ($connect === false) {
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logger("ldapauth: could not connect to $ldap_server");
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return false;
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}
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@ldap_set_option($connect, LDAP_OPT_PROTOCOL_VERSION, 3);
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@ldap_set_option($connect, LDAP_OPT_REFERRALS, 0);
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if ((@ldap_bind($connect, $ldap_binddn, $ldap_bindpw)) === false) {
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logger("ldapauth: could not bind $ldap_server as $ldap_binddn");
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return false;
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}
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$res = @ldap_search($connect, $ldap_searchdn, $ldap_userattr . '=' . $username);
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if (!$res) {
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logger("ldapauth: $ldap_userattr=$username,$ldap_searchdn not found");
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return false;
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}
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$id = @ldap_first_entry($connect, $res);
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if (!$id) {
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return false;
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}
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$dn = @ldap_get_dn($connect, $id);
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if (!@ldap_bind($connect, $dn, $password)) {
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return false;
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}
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$emailarray = [];
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$namearray = [];
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if ($ldap_autocreateaccount == "true") {
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if (!strlen($ldap_autocreateaccount_emailattribute)) {
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$ldap_autocreateaccount_emailattribute = "mail";
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}
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if (!strlen($ldap_autocreateaccount_nameattribute)) {
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$ldap_autocreateaccount_nameattribute = "givenName";
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}
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$emailarray = @ldap_get_values($connect, $id, $ldap_autocreateaccount_emailattribute);
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$namearray = @ldap_get_values($connect, $id, $ldap_autocreateaccount_nameattribute);
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}
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if (!strlen($ldap_group)) {
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ldap_autocreateaccount($ldap_autocreateaccount, $username, $password, $emailarray[0], $namearray[0]);
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return true;
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}
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$r = @ldap_compare($connect, $ldap_group, 'member', $dn);
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if ($r === -1) {
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$err = @ldap_error($connect);
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$eno = @ldap_errno($connect);
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@ldap_close($connect);
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if ($eno === 32) {
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logger("ldapauth: access control group Does Not Exist");
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return false;
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} elseif ($eno === 16) {
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logger('ldapauth: membership attribute does not exist in access control group');
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return false;
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} else {
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logger('ldapauth: error: ' . $err);
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return false;
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}
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} elseif ($r === false) {
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@ldap_close($connect);
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return false;
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}
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ldap_autocreateaccount($ldap_autocreateaccount, $username, $password, $emailarray[0], $namearray[0]);
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return true;
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}
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function ldap_autocreateaccount($ldap_autocreateaccount, $username, $password, $email, $name)
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{
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if ($ldap_autocreateaccount == "true") {
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$results = get_existing_account($username);
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if (empty($results)) {
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if (strlen($email) > 0 && strlen($name) > 0) {
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$arr = ['username' => $name, 'nickname' => $username, 'email' => $email, 'password' => $password, 'verified' => 1];
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try {
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User::create($arr);
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logger("ldapauth: account " . $username . " created");
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} catch (Exception $ex) {
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logger("ldapauth: account " . $username . " was not created ! : " . $ex->getMessage());
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}
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} else {
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logger("ldapauth: unable to create account, no email or nickname found");
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}
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}
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}
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}
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function get_existing_account($username)
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{
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return q("SELECT * FROM `user` WHERE `nickname` = '%s' AND `blocked` = 0 AND `verified` = 1 LIMIT 1", $username);
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}
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