egroupware/phpgwapi/inc/class.auth_ldap.inc.php

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<?php
/**************************************************************************\
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* eGroupWare API - Auth from LDAP *
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* This file written by Lars Kneschke <lkneschke@linux-at-work.de> *
* and Joseph Engo <jengo@phpgroupware.org> *
* Authentication based on LDAP Server *
* Copyright (C) 2000, 2001 Joseph Engo *
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* Copyright (C) 2002, 2003 Lars Kneschke *
* ------------------------------------------------------------------------ *
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* This library is part of the eGroupWare API *
* http://www.egroupware.org/api *
* ------------------------------------------------------------------------ *
* This library is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 2.1 of the License, *
* or any later version. *
* This library 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 Lesser General Public License for more details. *
* You should have received a copy of the GNU Lesser General Public License *
* along with this library; if not, write to the Free Software Foundation, *
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *
\**************************************************************************/
/* $Id$ */
class auth_
{
var $previous_login = -1;
/**
* authentication against LDAP
*
* @param string $username username of account to authenticate
* @param string $passwd corresponding password
* @return boolean true if successful authenticated, false otherwise
*/
function authenticate($username, $passwd)
{
if (ereg('[()|&=*,<>!~]',$username))
{
return False;
}
// allow non-ascii in username & password
$username = $GLOBALS['egw']->translation->convert($username,$GLOBALS['egw']->translation->charset(),'utf-8');
$passwd = $GLOBALS['egw']->translation->convert($passwd,$GLOBALS['egw']->translation->charset(),'utf-8');
if(!$ldap = $GLOBALS['egw']->common->ldapConnect())
{
$GLOBALS['egw']->log->message('F-Abort, Failed connecting to LDAP server for authenication, execution stopped');
$GLOBALS['egw']->log->commit();
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return False;
}
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/* Login with the LDAP Admin. User to find the User DN. */
if(!@ldap_bind($ldap, $GLOBALS['egw_info']['server']['ldap_root_dn'], $GLOBALS['egw_info']['server']['ldap_root_pw']))
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{
return False;
}
/* find the dn for this uid, the uid is not always in the dn */
$attributes = array('uid','dn','givenName','sn','mail','uidNumber','gidNumber','shadowExpire');
$filter = $GLOBALS['egw_info']['server']['ldap_search_filter'] ? $GLOBALS['egw_info']['server']['ldap_search_filter'] : '(uid=%user)';
$filter = str_replace(array('%user','%domain'),array($username,$GLOBALS['egw_info']['user']['domain']),$filter);
if ($GLOBALS['egw_info']['server']['account_repository'] == 'ldap')
{
$filter = "(&$filter(objectclass=posixaccount))";
}
$sri = ldap_search($ldap, $GLOBALS['egw_info']['server']['ldap_context'], $filter, $attributes);
$allValues = ldap_get_entries($ldap, $sri);
if ($allValues['count'] > 0)
{
if ($GLOBALS['egw_info']['server']['case_sensitive_username'] == true &&
$allValues[0]['uid'][0] != $username)
{
return false;
}
if ($GLOBALS['egw_info']['server']['account_repository'] == 'ldap' &&
isset($allValues[0]['shawdowexpire']) && $allValues[0]['shawdowexpire'][0]*24*3600 < time())
{
return false; // account is expired
}
$userDN = $allValues[0]['dn'];
/*
generate a bogus password to pass if the user doesn't give us one
this gets around systems that are anonymous search enabled
*/
if (empty($passwd))
{
$passwd = crypt(microtime());
}
// try to bind as the user with user suplied password
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if (@ldap_bind($ldap, $userDN, $passwd))
{
if ($GLOBALS['egw_info']['server']['account_repository'] != 'ldap')
{
if (!$account->account_id && $GLOBALS['egw_info']['server']['auto_create_acct'])
{
// create a global array with all availible info about that account
$GLOBALS['auto_create_acct'] = array();
foreach(array(
'givenname' => 'firstname',
'sn' => 'lastname',
'uidnumber' => 'account_id',
'mail' => 'email',
'gidnumber' => 'primary_group',
) as $ldap_name => $acct_name)
{
$GLOBALS['auto_create_acct'][$acct_name] =
$GLOBALS['egw']->translation->convert($allValues[0][$ldap_name][0],'utf-8');
}
return True;
}
return ($id = $GLOBALS['egw']->accounts->name2id($username,'account_lid','u')) &&
$GLOBALS['egw']->accounts->id2name($id,'account_status') == 'A';
}
return True;
}
}
// dn not found or password wrong
return False;
}
/**
* changes password in LDAP
*
* If $old_passwd is given, the password change is done binded as user and NOT with the
* "root" dn given in the configurations.
*
* @param string $old_passwd must be cleartext or empty to not to be checked
* @param string $new_passwd must be cleartext
* @param int $account_id account id of user whose passwd should be changed
* @return boolean true if password successful changed, false otherwise
*/
function change_password($old_passwd, $new_passwd, $account_id=0)
{
if (!$account_id)
{
$username = $GLOBALS['egw_info']['user']['account_lid'];
}
else
{
$username = $GLOBALS['egw']->translation->convert($GLOBALS['egw']->accounts->id2name($account_id),
$GLOBALS['egw']->translation->charset(),'utf-8');
}
//echo "<p>auth_ldap::change_password('$old_password','$new_passwd',$account_id) username='$username'</p>\n";
$filter = $GLOBALS['egw_info']['server']['ldap_search_filter'] ? $GLOBALS['egw_info']['server']['ldap_search_filter'] : '(uid=%user)';
$filter = str_replace(array('%user','%domain'),array($username,$GLOBALS['egw_info']['user']['domain']),$filter);
$ds = $GLOBALS['egw']->common->ldapConnect();
$sri = ldap_search($ds, $GLOBALS['egw_info']['server']['ldap_context'], $filter);
$allValues = ldap_get_entries($ds, $sri);
$entry['userpassword'] = $this->encrypt_password($new_passwd);
$dn = $allValues[0]['dn'];
if($old_passwd) // if old password given (not called by admin) --> bind as that user to change the pw
{
$ds = $GLOBALS['egw']->common->ldapConnect('',$dn,$old_passwd);
}
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if (!@ldap_modify($ds, $dn, $entry))
{
return false;
}
if($old_passwd) // if old password given (not called by admin) update the password in the session
{
$GLOBALS['egw']->session->appsession('password','phpgwapi',$new_passwd);
}
return $entry['userpassword'];
}
}