196 lines
6.9 KiB
PHP
Executable file
196 lines
6.9 KiB
PHP
Executable file
<?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 .htconfig.php file
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* e.g.:
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*
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* // ldap hostname server - required
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* $a->config['ldapauth']['ldap_server'] = 'host.example.com';
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* // dn to search users - required
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* $a->config['ldapauth']['ldap_searchdn'] = 'ou=users,dc=example,dc=com';
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* // attribute to find username - required
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* $a->config['ldapauth']['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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* $a->config['ldapauth']['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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* $a->config['ldapauth']['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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* $a->config['ldapauth']['ldap_autocreateaccount'] = 'true';
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* // attribute to get email - optional - default : 'mail'
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* $a->config['ldapauth']['ldap_autocreateaccount_emailattribute'] = 'mail';
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* // attribute to get nickname - optional - default : 'givenName'
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* $a->config['ldapauth']['ldap_autocreateaccount_nameattribute'] = 'cn';
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*
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* ...etc.
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*/
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require_once('include/user.php');
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function ldapauth_install() {
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register_hook('authenticate', 'addon/ldapauth/ldapauth.php', 'ldapauth_hook_authenticate');
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}
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function ldapauth_uninstall() {
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unregister_hook('authenticate', 'addon/ldapauth/ldapauth.php', 'ldapauth_hook_authenticate');
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}
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function ldapauth_hook_authenticate($a,&$b) {
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if(ldapauth_authenticate($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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$ldap_server = get_config('ldapauth','ldap_server');
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$ldap_binddn = get_config('ldapauth','ldap_binddn');
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$ldap_bindpw = get_config('ldapauth','ldap_bindpw');
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$ldap_searchdn = get_config('ldapauth','ldap_searchdn');
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$ldap_userattr = get_config('ldapauth','ldap_userattr');
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$ldap_group = get_config('ldapauth','ldap_group');
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$ldap_autocreateaccount = get_config('ldapauth','ldap_autocreateaccount');
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$ldap_autocreateaccount_emailattribute = get_config('ldapauth','ldap_autocreateaccount_emailattribute');
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$ldap_autocreateaccount_nameattribute = get_config('ldapauth','ldap_autocreateaccount_nameattribute');
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if(! ((strlen($password))
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&& (function_exists('ldap_connect'))
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&& (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,$password))
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return false;
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$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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if(! strlen($ldap_autocreateaccount_nameattribute))
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$ldap_autocreateaccount_nameattribute = "givenName";
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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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}
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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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}
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else {
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logger('ldapauth: error: ' . $err);
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return false;
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}
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}
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elseif ($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,$name) {
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if($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 = array('username'=>$name,'nickname'=>$username,'email'=>$email,'password'=>$password,'verified'=>1);
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$result = create_user($arr);
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if ($result['success']){
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logger("ldapauth: account " . $username . " created");
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}else{
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logger("ldapauth: account " . $username . " was not created ! : " . implode($result));
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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($username){
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return q("SELECT * FROM `user` WHERE `nickname` = '%s' AND `blocked` = 0 AND `verified` = 1 LIMIT 1",$username);
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}
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