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