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327f9afbc0
No longer use LDAP_NO_SERVER_CONNECTION in case ldap_search() fails. Add and use LDAP_SEARCH_FAILED instead, so users can tell the difference between ldap_connect() failing and ldap_search() failing. PHPBB3-8792
349 lines
9.7 KiB
PHP
349 lines
9.7 KiB
PHP
<?php
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/**
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*
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* LDAP auth plug-in for phpBB3
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*
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* Authentication plug-ins is largely down to Sergey Kanareykin, our thanks to him.
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*
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* @package login
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* @version $Id$
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* @copyright (c) 2005 phpBB Group
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License
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*
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*/
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/**
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* @ignore
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*/
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if (!defined('IN_PHPBB'))
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{
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exit;
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}
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/**
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* Connect to ldap server
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* Only allow changing authentication to ldap if we can connect to the ldap server
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* Called in acp_board while setting authentication plugins
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*/
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function init_ldap()
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{
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global $config, $user;
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if (!@extension_loaded('ldap'))
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{
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return $user->lang['LDAP_NO_LDAP_EXTENSION'];
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}
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$config['ldap_port'] = (int) $config['ldap_port'];
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if ($config['ldap_port'])
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{
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$ldap = @ldap_connect($config['ldap_server'], $config['ldap_port']);
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}
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else
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{
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$ldap = @ldap_connect($config['ldap_server']);
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}
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if (!$ldap)
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{
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return $user->lang['LDAP_NO_SERVER_CONNECTION'];
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}
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@ldap_set_option($ldap, LDAP_OPT_PROTOCOL_VERSION, 3);
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@ldap_set_option($ldap, LDAP_OPT_REFERRALS, 0);
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if ($config['ldap_user'] || $config['ldap_password'])
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{
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if (!@ldap_bind($ldap, htmlspecialchars_decode($config['ldap_user']), htmlspecialchars_decode($config['ldap_password'])))
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{
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return $user->lang['LDAP_INCORRECT_USER_PASSWORD'];
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}
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}
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// ldap_connect only checks whether the specified server is valid, so the connection might still fail
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$search = @ldap_search(
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$ldap,
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htmlspecialchars_decode($config['ldap_base_dn']),
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ldap_user_filter($user->data['username']),
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(empty($config['ldap_email'])) ?
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array(htmlspecialchars_decode($config['ldap_uid'])) :
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array(htmlspecialchars_decode($config['ldap_uid']), htmlspecialchars_decode($config['ldap_email'])),
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0,
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1
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);
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if ($search === false)
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{
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return $user->lang['LDAP_SEARCH_FAILED'];
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}
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$result = @ldap_get_entries($ldap, $search);
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@ldap_close($ldap);
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if (!is_array($result) || sizeof($result) < 2)
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{
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return sprintf($user->lang['LDAP_NO_IDENTITY'], $user->data['username']);
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}
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if (!empty($config['ldap_email']) && !isset($result[0][htmlspecialchars_decode($config['ldap_email'])]))
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{
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return $user->lang['LDAP_NO_EMAIL'];
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}
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return false;
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}
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/**
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* Login function
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*/
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function login_ldap(&$username, &$password)
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{
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global $db, $config, $user;
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// do not allow empty password
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if (!$password)
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{
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return array(
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'status' => LOGIN_ERROR_PASSWORD,
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'error_msg' => 'NO_PASSWORD_SUPPLIED',
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'user_row' => array('user_id' => ANONYMOUS),
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);
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}
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if (!$username)
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{
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return array(
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'status' => LOGIN_ERROR_USERNAME,
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'error_msg' => 'LOGIN_ERROR_USERNAME',
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'user_row' => array('user_id' => ANONYMOUS),
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);
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}
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if (!@extension_loaded('ldap'))
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{
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return array(
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'status' => LOGIN_ERROR_EXTERNAL_AUTH,
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'error_msg' => 'LDAP_NO_LDAP_EXTENSION',
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'user_row' => array('user_id' => ANONYMOUS),
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);
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}
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$config['ldap_port'] = (int) $config['ldap_port'];
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if ($config['ldap_port'])
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{
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$ldap = @ldap_connect($config['ldap_server'], $config['ldap_port']);
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}
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else
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{
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$ldap = @ldap_connect($config['ldap_server']);
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}
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if (!$ldap)
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{
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return array(
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'status' => LOGIN_ERROR_EXTERNAL_AUTH,
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'error_msg' => 'LDAP_NO_SERVER_CONNECTION',
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'user_row' => array('user_id' => ANONYMOUS),
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);
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}
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@ldap_set_option($ldap, LDAP_OPT_PROTOCOL_VERSION, 3);
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@ldap_set_option($ldap, LDAP_OPT_REFERRALS, 0);
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if ($config['ldap_user'] || $config['ldap_password'])
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{
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if (!@ldap_bind($ldap, htmlspecialchars_decode($config['ldap_user']), htmlspecialchars_decode($config['ldap_password'])))
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{
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return $user->lang['LDAP_NO_SERVER_CONNECTION'];
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}
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}
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$search = @ldap_search(
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$ldap,
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htmlspecialchars_decode($config['ldap_base_dn']),
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ldap_user_filter($username),
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(empty($config['ldap_email'])) ?
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array(htmlspecialchars_decode($config['ldap_uid'])) :
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array(htmlspecialchars_decode($config['ldap_uid']), htmlspecialchars_decode($config['ldap_email'])),
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0,
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1
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);
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$ldap_result = @ldap_get_entries($ldap, $search);
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if (is_array($ldap_result) && sizeof($ldap_result) > 1)
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{
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if (@ldap_bind($ldap, $ldap_result[0]['dn'], htmlspecialchars_decode($password)))
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{
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@ldap_close($ldap);
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$sql ='SELECT user_id, username, user_password, user_passchg, user_email, user_type
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FROM ' . USERS_TABLE . "
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WHERE username_clean = '" . $db->sql_escape(utf8_clean_string($username)) . "'";
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$result = $db->sql_query($sql);
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$row = $db->sql_fetchrow($result);
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$db->sql_freeresult($result);
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if ($row)
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{
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unset($ldap_result);
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// User inactive...
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if ($row['user_type'] == USER_INACTIVE || $row['user_type'] == USER_IGNORE)
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{
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return array(
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'status' => LOGIN_ERROR_ACTIVE,
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'error_msg' => 'ACTIVE_ERROR',
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'user_row' => $row,
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);
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}
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// Successful login... set user_login_attempts to zero...
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return array(
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'status' => LOGIN_SUCCESS,
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'error_msg' => false,
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'user_row' => $row,
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);
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}
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else
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{
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// retrieve default group id
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$sql = 'SELECT group_id
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FROM ' . GROUPS_TABLE . "
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WHERE group_name = '" . $db->sql_escape('REGISTERED') . "'
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AND group_type = " . GROUP_SPECIAL;
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$result = $db->sql_query($sql);
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$row = $db->sql_fetchrow($result);
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$db->sql_freeresult($result);
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if (!$row)
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{
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trigger_error('NO_GROUP');
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}
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// generate user account data
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$ldap_user_row = array(
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'username' => $username,
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'user_password' => phpbb_hash($password),
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'user_email' => (!empty($config['ldap_email'])) ? utf8_htmlspecialchars($ldap_result[0][htmlspecialchars_decode($config['ldap_email'])][0]) : '',
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'group_id' => (int) $row['group_id'],
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'user_type' => USER_NORMAL,
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'user_ip' => $user->ip,
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'user_new' => ($config['new_member_post_limit']) ? 1 : 0,
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);
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unset($ldap_result);
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// this is the user's first login so create an empty profile
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return array(
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'status' => LOGIN_SUCCESS_CREATE_PROFILE,
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'error_msg' => false,
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'user_row' => $ldap_user_row,
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);
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}
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}
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else
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{
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unset($ldap_result);
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@ldap_close($ldap);
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// Give status about wrong password...
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return array(
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'status' => LOGIN_ERROR_PASSWORD,
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'error_msg' => 'LOGIN_ERROR_PASSWORD',
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'user_row' => array('user_id' => ANONYMOUS),
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);
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}
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}
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@ldap_close($ldap);
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return array(
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'status' => LOGIN_ERROR_USERNAME,
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'error_msg' => 'LOGIN_ERROR_USERNAME',
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'user_row' => array('user_id' => ANONYMOUS),
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);
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}
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/**
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* Generates a filter string for ldap_search to find a user
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*
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* @param $username string Username identifying the searched user
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*
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* @return string A filter string for ldap_search
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*/
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function ldap_user_filter($username)
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{
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global $config;
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$filter = '(' . $config['ldap_uid'] . '=' . ldap_escape(htmlspecialchars_decode($username)) . ')';
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if ($config['ldap_user_filter'])
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{
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$_filter = ($config['ldap_user_filter'][0] == '(' && substr($config['ldap_user_filter'], -1) == ')') ? $config['ldap_user_filter'] : "({$config['ldap_user_filter']})";
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$filter = "(&{$filter}{$_filter})";
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}
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return $filter;
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}
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/**
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* Escapes an LDAP AttributeValue
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*/
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function ldap_escape($string)
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{
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return str_replace(array('*', '\\', '(', ')'), array('\\*', '\\\\', '\\(', '\\)'), $string);
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}
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/**
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* This function is used to output any required fields in the authentication
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* admin panel. It also defines any required configuration table fields.
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*/
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function acp_ldap(&$new)
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{
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global $user;
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$tpl = '
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<dl>
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<dt><label for="ldap_server">' . $user->lang['LDAP_SERVER'] . ':</label><br /><span>' . $user->lang['LDAP_SERVER_EXPLAIN'] . '</span></dt>
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<dd><input type="text" id="ldap_server" size="40" name="config[ldap_server]" value="' . $new['ldap_server'] . '" /></dd>
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</dl>
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<dl>
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<dt><label for="ldap_port">' . $user->lang['LDAP_PORT'] . ':</label><br /><span>' . $user->lang['LDAP_PORT_EXPLAIN'] . '</span></dt>
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<dd><input type="text" id="ldap_port" size="40" name="config[ldap_port]" value="' . $new['ldap_port'] . '" /></dd>
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</dl>
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<dl>
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<dt><label for="ldap_dn">' . $user->lang['LDAP_DN'] . ':</label><br /><span>' . $user->lang['LDAP_DN_EXPLAIN'] . '</span></dt>
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<dd><input type="text" id="ldap_dn" size="40" name="config[ldap_base_dn]" value="' . $new['ldap_base_dn'] . '" /></dd>
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</dl>
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<dl>
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<dt><label for="ldap_uid">' . $user->lang['LDAP_UID'] . ':</label><br /><span>' . $user->lang['LDAP_UID_EXPLAIN'] . '</span></dt>
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<dd><input type="text" id="ldap_uid" size="40" name="config[ldap_uid]" value="' . $new['ldap_uid'] . '" /></dd>
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</dl>
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<dl>
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<dt><label for="ldap_user_filter">' . $user->lang['LDAP_USER_FILTER'] . ':</label><br /><span>' . $user->lang['LDAP_USER_FILTER_EXPLAIN'] . '</span></dt>
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<dd><input type="text" id="ldap_user_filter" size="40" name="config[ldap_user_filter]" value="' . $new['ldap_user_filter'] . '" /></dd>
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</dl>
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<dl>
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<dt><label for="ldap_email">' . $user->lang['LDAP_EMAIL'] . ':</label><br /><span>' . $user->lang['LDAP_EMAIL_EXPLAIN'] . '</span></dt>
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<dd><input type="text" id="ldap_email" size="40" name="config[ldap_email]" value="' . $new['ldap_email'] . '" /></dd>
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</dl>
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<dl>
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<dt><label for="ldap_user">' . $user->lang['LDAP_USER'] . ':</label><br /><span>' . $user->lang['LDAP_USER_EXPLAIN'] . '</span></dt>
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<dd><input type="text" id="ldap_user" size="40" name="config[ldap_user]" value="' . $new['ldap_user'] . '" /></dd>
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</dl>
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<dl>
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<dt><label for="ldap_password">' . $user->lang['LDAP_PASSWORD'] . ':</label><br /><span>' . $user->lang['LDAP_PASSWORD_EXPLAIN'] . '</span></dt>
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<dd><input type="password" id="ldap_password" size="40" name="config[ldap_password]" value="' . $new['ldap_password'] . '" /></dd>
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</dl>
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';
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// These are fields required in the config table
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return array(
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'tpl' => $tpl,
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'config' => array('ldap_server', 'ldap_port', 'ldap_base_dn', 'ldap_uid', 'ldap_user_filter', 'ldap_email', 'ldap_user', 'ldap_password')
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);
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}
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?>
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