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<?php
/*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2008, 2009, StatusNet, Inc.
*
* 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/>.
*/
if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
require_once 'Net/LDAP2.php';
function ldap_get_config(){
static $config = null;
if($config == null){
$config = array();
$keys = array('host','port','version','starttls','binddn','bindpw','basedn','options','scope');
foreach($keys as $key){
$value = common_config('ldap', $key);
if($value!==false){
$config[$key]=$value;
}
}
}
return $config;
}
function ldap_get_connection($config = null){
if($config == null){
$config = ldap_get_config();
}
//cannot use Net_LDAP2::connect() as StatusNet uses
//PEAR::setErrorHandling(PEAR_ERROR_CALLBACK, 'handleError');
//PEAR handling can be overridden on instance objects, so we do that.
$ldap = new Net_LDAP2($config);
$ldap->setErrorHandling(PEAR_ERROR_RETURN);
$err=$ldap->bind();
if (Net_LDAP2::isError($err)) {
common_log(LOG_WARNING, 'Could not connect to LDAP server: '.$err->getMessage());
return false;
}
return $ldap;
}
function ldap_check_password($username, $password){
$ldap = ldap_get_connection();
if(!$ldap){
return false;
}
$entry = ldap_get_user($username);
if(!$entry){
return false;
}else{
$config = ldap_get_config();
$config['binddn']=$entry->dn();
$config['bindpw']=$password;
if(ldap_get_connection($config)){
return true;
}else{
return false;
}
}
}
/**
* get an LDAP entry for a user with a given username
*
* @param string $username
* $param array $attributes LDAP attributes to retrieve
* @return string DN
*/
function ldap_get_user($username,$attributes=array()){
$ldap = ldap_get_connection();
$filter = Net_LDAP2_Filter::create(common_config('ldap','nickname_attribute'), 'equals', $username);
$options = array(
'scope' => 'sub',
'attributes' => $attributes
);
$search = $ldap->search(null,$filter,$options);
if (PEAR::isError($search)) {
common_log(LOG_WARNING, 'Error while getting DN for user: '.$search->getMessage());
return false;
}
if($search->count()==0){
return false;
}else if($search->count()==1){
$entry = $search->shiftEntry();
return $entry;
}else{
common_log(LOG_WARNING, 'Found ' . $search->count() . ' ldap user with the username: ' . $username);
return false;
}
}
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