gnu-social/plugins/LdapAuthorization/LdapAuthorizationPlugin.php

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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Plugin to enable LDAP Authorization
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Plugin
* @package StatusNet
* @author Craig Andrews <candrews@integralblue.com>
* @copyright 2009 Craig Andrews http://candrews.integralblue.com
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET') && !defined('LACONICA')) {
exit(1);
}
require_once INSTALLDIR.'/plugins/Authorization/AuthorizationPlugin.php';
require_once 'Net/LDAP2.php';
class LdapAuthorizationPlugin extends AuthorizationPlugin
{
public $host=null;
public $port=null;
public $version=null;
public $starttls=null;
public $binddn=null;
public $bindpw=null;
public $basedn=null;
public $options=null;
public $filter=null;
public $scope=null;
public $provider_name = null;
public $uniqueMember_attribute = null;
public $roles_to_groups = null;
function onInitializePlugin(){
parent::onInitializePlugin();
if(!isset($this->host)){
throw new Exception("must specify a host");
}
if(!isset($this->basedn)){
throw new Exception("must specify a basedn");
}
if(!isset($this->provider_name)){
throw new Exception("provider_name must be set. Use the provider_name from the LDAP Authentication plugin.");
}
if(!isset($this->uniqueMember_attribute)){
throw new Exception("uniqueMember_attribute must be set.");
}
if(!isset($this->roles_to_groups)){
throw new Exception("roles_to_groups must be set.");
}
}
//---interface implementation---//
function loginAllowed($user) {
$user_username = new User_username();
$user_username->user_id=$user->id;
$user_username->provider_name=$this->provider_name;
if($user_username->find() && $user_username->fetch()){
$entry = $this->ldap_get_user($user_username->username);
if($entry){
//if a user exists, we can assume he's allowed to login
return true;
}else{
return null;
}
}else{
return null;
}
}
function hasRole($profile, $name) {
$user_username = new User_username();
$user_username->user_id=$profile->id;
$user_username->provider_name=$this->provider_name;
if($user_username->find() && $user_username->fetch()){
$entry = $this->ldap_get_user($user_username->username);
if($entry){
if(isset($this->roles_to_groups[$name])){
if(is_array($this->roles_to_groups[$name])){
foreach($this->roles_to_groups[$name] as $group){
if($this->isMemberOfGroup($entry->dn(),$group)){
return true;
}
}
}else{
if($this->isMemberOfGroup($entry->dn(),$this->roles_to_groups[$name])){
return true;
}
}
}
}
}
return false;
}
function isMemberOfGroup($userDn, $groupDn)
{
$ldap = ldap_get_connection();
$link = $ldap->getLink();
$r = ldap_compare($link, $groupDn, $this->uniqueMember_attribute, $userDn);
if ($r === true){
return true;
}else if($r === false){
return false;
}else{
common_log(LOG_ERR, ldap_error($r));
return false;
}
}
}