egroupware/phpgwapi/inc/class.auth_sql.inc.php
2011-05-04 13:33:34 +00:00

254 lines
8.6 KiB
PHP

<?php
/**
* eGroupWare API - Authentication from SQL
*
* @link http://www.egroupware.org
* @author Ralf Becker <ralfbecker@outdoor-training.de>
* @author Dan Kuykendall <seek3r@phpgroupware.org>
* @author Joseph Engo <jengo@phpgroupware.org>
* Copyright (C) 2000, 2001 Dan Kuykendall
* @license http://opensource.org/licenses/lgpl-license.php LGPL - GNU Lesser General Public License
* @package api
* @subpackage authentication
* @version $Id$
*/
/**
* eGroupWare API - Authentication based on SQL table of accounts
*
* Encryption types other than md5() added by Miles Lott <milos@groupwhere.org>
* based on code from http://www.thomas-alfeld.de/frank/
*
* Massive code cleanup and added password migration by Cornelius Weiss <egw@von-und-zu-weiss.de
*/
class auth_sql implements auth_backend
{
/**
* Reference to the global db object
*
* @var egw_db
*/
var $db;
var $table = 'egw_accounts';
var $previous_login = -1;
function __construct()
{
$this->db = $GLOBALS['egw']->db;
$this->type = @$GLOBALS['egw_info']['server']['sql_encryption_type'] ?
strtolower($GLOBALS['egw_info']['server']['sql_encryption_type']) : 'md5';
}
/**
* password authentication against password stored in sql datababse
*
* @param string $username username of account to authenticate
* @param string $passwd corresponding password
* @param string $passwd_type='text' 'text' for cleartext passwords (default)
* @return boolean true if successful authenticated, false otherwise
*/
function authenticate($username, $passwd, $passwd_type='text')
{
/* normal web form login */
$where = array(
'account_lid' => $username,
'account_type' => 'u',
'account_status' => 'A'
);
if (!$GLOBALS['egw_info']['server']['case_sensitive_username']) // = is case sensitiv eg. on postgres, but not on mysql!
{
$where[] = 'account_lid '.$this->db->capabilities[egw_db::CAPABILITY_CASE_INSENSITIV_LIKE].' '.$this->db->quote($username);
unset($where['account_lid']);
}
if($passwd_type == 'text')
{
if (!($row = $this->db->select($this->table,'account_lid,account_pwd,account_lastlogin,account_id',$where,__LINE__,__FILE__)->fetch()) ||
empty($row['account_pwd']) ||
$GLOBALS['egw_info']['server']['case_sensitive_username'] && $row['account_lid'] != $username)
{
return false;
}
if(!($match = auth::compare_password($passwd,$row['account_pwd'],$this->type,strtolower($username))) ||
preg_match('/^{(.+)}/',$row['account_pwd'],$matches) && // explicit specified hash, eg. from ldap
in_array(strtolower($matches[1]),explode(',',strtolower($GLOBALS['egw_info']['server']['pwd_migration_types']))))
{
// do we have to migrate an old password ?
if($GLOBALS['egw_info']['server']['pwd_migration_allowed'] && !empty($GLOBALS['egw_info']['server']['pwd_migration_types']))
{
foreach(explode(',', $GLOBALS['egw_info']['server']['pwd_migration_types']) as $type)
{
if(($match = auth::compare_password($passwd,$row['account_pwd'],$type,strtolower($username))))
{
$encrypted_passwd = auth::encrypt_sql($passwd);
$this->_update_passwd($encrypted_passwd,$passwd,$row['account_id'],false,true);
break;
}
}
}
if (!$match) return false;
}
}
/* Auth via crypted password. NOTE: mail needs cleartext password to authenticate against mailserver! */
else
{
$where['account_pwd'] = $passwd;
if (!($row = $this->db->select($this->table,'account_lid,account_lastlogin',$where,__LINE__,__FILE__)->fetch()) ||
$GLOBALS['egw_info']['server']['case_sensitive_username'] && $row['account_lid'] != $username)
{
return false;
}
}
// if this point is reached, auth was successfull
$this->previous_login = $row['account_lastlogin'];
return true;
}
/**
* fetch the last pwd change for the user
*
* @param string $username username of account to authenticate
* @return mixed false or account_lastpwd_change
*/
function getLastPwdChange($username)
{
/* normal web form login */
$where = array(
'account_lid' => $username,
'account_type' => 'u',
'account_status' => 'A'
);
if (!$GLOBALS['egw_info']['server']['case_sensitive_username']) // = is case sensitiv eg. on postgres, but not on mysql!
{
$where[] = 'account_lid '.$this->db->capabilities[egw_db::CAPABILITY_CASE_INSENSITIV_LIKE].' '.$this->db->quote($username);
unset($where['account_lid']);
}
if (!($row = $this->db->select($this->table,'account_lid,account_lastpwd_change',$where,__LINE__,__FILE__)->fetch()) ||
$GLOBALS['egw_info']['server']['case_sensitive_username'] && $row['account_lid'] != $username)
{
return false;
}
// if this point is reached, we found a user with that name and return the account_lastpwd_change
$rv = $row['account_lastpwd_change'];
return $rv;
}
/**
* changes account_lastpwd_change in sql datababse
*
* @param int $account_id account id of user whose passwd should be changed
* @param string $passwd must be cleartext, usually not used, but may be used to authenticate as user to do the change -> ldap
* @param int $lastpwdchange must be a unixtimestamp
* @return boolean true if account_lastpwd_change successful changed, false otherwise
*/
function setLastPwdChange($account_id=0, $passwd=NULL, $lastpwdchange=NULL)
{
$admin = True;
// Don't allow password changes for other accounts when using XML-RPC
if(!$account_id || $GLOBALS['egw_info']['flags']['currentapp'] == 'login')
{
$admin = False;
$account_id = $GLOBALS['egw_info']['user']['account_id'];
$username = $GLOBALS['egw_info']['user']['account_lid'];
}
else
{
$username = $GLOBALS['egw']->accounts->id2name($account_id);
}
if (($pw = $this->db->select($this->table,'account_pwd',array(
'account_id' => $account_id,
'account_type' => 'u',
'account_status' => 'A',
),__LINE__,__FILE__)->fetchColumn()) === false)
{
return false; // account not found
}
// Check the passwd to make sure this is legal
if(!$admin && !auth::compare_password($passwd,$pw,$this->type,strtolower($username)))
{
return false;
}
$this->db->update($this->table,array(
'account_lastpwd_change' => (is_null($lastpwdchange) || $lastpwdchange<0 ? time():$lastpwdchange),
),array(
'account_id' => $account_id,
),__LINE__,__FILE__);
if(!$this->db->affected_rows()) return false;
return true;
}
/**
* changes password in sql datababse
*
* @param string $old_passwd must be cleartext
* @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)
{
$admin = True;
// Don't allow password changes for other accounts when using XML-RPC
if(!$account_id || $GLOBALS['egw_info']['flags']['currentapp'] == 'login')
{
$admin = False;
$account_id = $GLOBALS['egw_info']['user']['account_id'];
$username = $GLOBALS['egw_info']['user']['account_lid'];
}
else
{
$username = $GLOBALS['egw']->accounts->id2name($account_id);
}
if (($pw = $this->db->select($this->table,'account_pwd',array(
'account_id' => $account_id,
'account_type' => 'u',
'account_status' => 'A',
),__LINE__,__FILE__)->fetchColumn()) === false)
{
return false; // account not found
}
// Check the old_passwd to make sure this is legal
if(!$admin && !auth::compare_password($old_passwd,$pw,$this->type,strtolower($username)))
{
return false;
}
// old password ok, or admin called the function from the admin application (no old passwd available).
return $this->_update_passwd(auth::encrypt_sql($new_passwd),$new_passwd,$account_id,$admin);
}
/**
* changes password in sql datababse
*
* @param string $encrypted_passwd
* @param string $new_passwd cleartext
* @param int $account_id account id of user whose passwd should be changed
* @param boolean $admin=false called by admin, if not update password in the session
* @param boolean $update_lastpw_change=true
* @return boolean true if password successful changed, false otherwise
*/
private function _update_passwd($encrypted_passwd,$new_passwd,$account_id,$admin=false,$update_lastpw_change=true)
{
$update = array('account_pwd' => $encrypted_passwd);
if ($update_lastpw_change) $write['account_lastpwd_change'] = time();
$this->db->update($this->table,$update,array(
'account_id' => $account_id,
),__LINE__,__FILE__);
if(!$this->db->affected_rows()) return false;
if(!$admin)
{
$GLOBALS['egw']->session->appsession('password','phpgwapi',$new_passwd);
}
return $encrypted_passwd;
}
}