-<?php

-/**

-*

-* LDAP auth plug-in for phpBB3

-*

-* Authentication plug-ins is largely down to Sergey Kanareykin, our thanks to him.

-*

-* @package login

-* @copyright (c) 2005 phpBB Group

-* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2

-*

-*/

-

-/**

-* @ignore

-*/

-if (!defined('IN_PHPBB'))

-{

- exit;

-}

-

-/**

-* Connect to ldap server

-* Only allow changing authentication to ldap if we can connect to the ldap server

-* Called in acp_board while setting authentication plugins

-*/

-function init_ldap()

-{

- global $config, $user;

-

- if (!@extension_loaded('ldap'))

- {

- return $user->lang['LDAP_NO_LDAP_EXTENSION'];

- }

-

- $config['ldap_port'] = (int) $config['ldap_port'];

- if ($config['ldap_port'])

- {

- $ldap = @ldap_connect($config['ldap_server'], $config['ldap_port']);

- }

- else

- {

- $ldap = @ldap_connect($config['ldap_server']);

- }

-

- if (!$ldap)

- {

- return $user->lang['LDAP_NO_SERVER_CONNECTION'];

- }

-

- @ldap_set_option($ldap, LDAP_OPT_PROTOCOL_VERSION, 3);

- @ldap_set_option($ldap, LDAP_OPT_REFERRALS, 0);

-

- if ($config['ldap_user'] || $config['ldap_password'])

- {

- if (!@ldap_bind($ldap, htmlspecialchars_decode($config['ldap_user']), htmlspecialchars_decode($config['ldap_password'])))

- {

- return $user->lang['LDAP_INCORRECT_USER_PASSWORD'];

- }

- }

-

- // ldap_connect only checks whether the specified server is valid, so the connection might still fail

- $search = @ldap_search(

- $ldap,

- htmlspecialchars_decode($config['ldap_base_dn']),

- ldap_user_filter($user->data['username']),

- (empty($config['ldap_email'])) ?

- array(htmlspecialchars_decode($config['ldap_uid'])) :

- array(htmlspecialchars_decode($config['ldap_uid']), htmlspecialchars_decode($config['ldap_email'])),

- 0,

- 1

- );

-

- if ($search === false)

- {

- return $user->lang['LDAP_SEARCH_FAILED'];

- }

-

- $result = @ldap_get_entries($ldap, $search);

-

- @ldap_close($ldap);

-

-

- if (!is_array($result) || sizeof($result) < 2)

- {

- return sprintf($user->lang['LDAP_NO_IDENTITY'], $user->data['username']);

- }

-

- if (!empty($config['ldap_email']) && !isset($result[0][htmlspecialchars_decode($config['ldap_email'])]))

- {

- return $user->lang['LDAP_NO_EMAIL'];

- }

-

- return false;

-}

-

-/**

-* Login function

-*/

-function login_ldap(&$username, &$password)

-{

- global $db, $config, $user;

-

- // do not allow empty password

- if (!$password)

- {

- return array(

- 'status' => LOGIN_ERROR_PASSWORD,

- 'error_msg' => 'NO_PASSWORD_SUPPLIED',

- 'user_row' => array('user_id' => ANONYMOUS),

- );

- }

-

- if (!$username)

- {

- return array(

- 'status' => LOGIN_ERROR_USERNAME,

- 'error_msg' => 'LOGIN_ERROR_USERNAME',

- 'user_row' => array('user_id' => ANONYMOUS),

- );

- }

-

- if (!@extension_loaded('ldap'))

- {

- return array(

- 'status' => LOGIN_ERROR_EXTERNAL_AUTH,

- 'error_msg' => 'LDAP_NO_LDAP_EXTENSION',

- 'user_row' => array('user_id' => ANONYMOUS),

- );

- }

-

- $config['ldap_port'] = (int) $config['ldap_port'];

- if ($config['ldap_port'])

- {

- $ldap = @ldap_connect($config['ldap_server'], $config['ldap_port']);

- }

- else

- {

- $ldap = @ldap_connect($config['ldap_server']);

- }

-

- if (!$ldap)

- {

- return array(

- 'status' => LOGIN_ERROR_EXTERNAL_AUTH,

- 'error_msg' => 'LDAP_NO_SERVER_CONNECTION',

- 'user_row' => array('user_id' => ANONYMOUS),

- );

- }

-

- @ldap_set_option($ldap, LDAP_OPT_PROTOCOL_VERSION, 3);

- @ldap_set_option($ldap, LDAP_OPT_REFERRALS, 0);

-

- if ($config['ldap_user'] || $config['ldap_password'])

- {

- if (!@ldap_bind($ldap, htmlspecialchars_decode($config['ldap_user']), htmlspecialchars_decode($config['ldap_password'])))

- {

- return array(

- 'status' => LOGIN_ERROR_EXTERNAL_AUTH,

- 'error_msg' => 'LDAP_NO_SERVER_CONNECTION',

- 'user_row' => array('user_id' => ANONYMOUS),

- );

- }

- }

-

- $search = @ldap_search(

- $ldap,

- htmlspecialchars_decode($config['ldap_base_dn']),

- ldap_user_filter($username),

- (empty($config['ldap_email'])) ?

- array(htmlspecialchars_decode($config['ldap_uid'])) :

- array(htmlspecialchars_decode($config['ldap_uid']), htmlspecialchars_decode($config['ldap_email'])),

- 0,

- 1

- );

-

- $ldap_result = @ldap_get_entries($ldap, $search);

-

- if (is_array($ldap_result) && sizeof($ldap_result) > 1)

- {

- if (@ldap_bind($ldap, $ldap_result[0]['dn'], htmlspecialchars_decode($password)))

- {

- @ldap_close($ldap);

-

- $sql ='SELECT user_id, username, user_password, user_passchg, user_email, user_type

- FROM ' . USERS_TABLE . "

- WHERE username_clean = '" . $db->sql_escape(utf8_clean_string($username)) . "'";

- $result = $db->sql_query($sql);

- $row = $db->sql_fetchrow($result);

- $db->sql_freeresult($result);

-

- if ($row)

- {

- unset($ldap_result);

-

- // User inactive...

- if ($row['user_type'] == USER_INACTIVE || $row['user_type'] == USER_IGNORE)

- {

- return array(

- 'status' => LOGIN_ERROR_ACTIVE,

- 'error_msg' => 'ACTIVE_ERROR',

- 'user_row' => $row,

- );

- }

-

- // Successful login... set user_login_attempts to zero...

- return array(

- 'status' => LOGIN_SUCCESS,

- 'error_msg' => false,

- 'user_row' => $row,

- );

- }

- else

- {

- // retrieve default group id

- $sql = 'SELECT group_id

- FROM ' . GROUPS_TABLE . "

- WHERE group_name = '" . $db->sql_escape('REGISTERED') . "'

- AND group_type = " . GROUP_SPECIAL;

- $result = $db->sql_query($sql);

- $row = $db->sql_fetchrow($result);

- $db->sql_freeresult($result);

-

- if (!$row)

- {

- trigger_error('NO_GROUP');

- }

-

- // generate user account data

- $ldap_user_row = array(

- 'username' => $username,

- 'user_password' => phpbb_hash($password),

- 'user_email' => (!empty($config['ldap_email'])) ? utf8_htmlspecialchars($ldap_result[0][htmlspecialchars_decode($config['ldap_email'])][0]) : '',

- 'group_id' => (int) $row['group_id'],

- 'user_type' => USER_NORMAL,

- 'user_ip' => $user->ip,

- 'user_new' => ($config['new_member_post_limit']) ? 1 : 0,

- );

-

- unset($ldap_result);

-

- // this is the user's first login so create an empty profile

- return array(

- 'status' => LOGIN_SUCCESS_CREATE_PROFILE,

- 'error_msg' => false,

- 'user_row' => $ldap_user_row,

- );

- }

- }

- else

- {

- unset($ldap_result);

- @ldap_close($ldap);

-

- // Give status about wrong password...

- return array(

- 'status' => LOGIN_ERROR_PASSWORD,

- 'error_msg' => 'LOGIN_ERROR_PASSWORD',

- 'user_row' => array('user_id' => ANONYMOUS),

- );

- }

- }

-

- @ldap_close($ldap);

-

- return array(

- 'status' => LOGIN_ERROR_USERNAME,

- 'error_msg' => 'LOGIN_ERROR_USERNAME',

- 'user_row' => array('user_id' => ANONYMOUS),

- );

-}

-

-/**

-* Generates a filter string for ldap_search to find a user

-*

-* @param $username string Username identifying the searched user

-*

-* @return string A filter string for ldap_search

-*/

-function ldap_user_filter($username)

-{

- global $config;

-

- $filter = '(' . $config['ldap_uid'] . '=' . ldap_escape(htmlspecialchars_decode($username)) . ')';

- if ($config['ldap_user_filter'])

- {

- $_filter = ($config['ldap_user_filter'][0] == '(' && substr($config['ldap_user_filter'], -1) == ')') ? $config['ldap_user_filter'] : "({$config['ldap_user_filter']})";

- $filter = "(&{$filter}{$_filter})";

- }

- return $filter;

-}

-

-/**

-* Escapes an LDAP AttributeValue

-*/

-function ldap_escape($string)

-{

- return str_replace(array('*', '\\', '(', ')'), array('\\*', '\\\\', '\\(', '\\)'), $string);

-}

-

-/**

-* This function is used to output any required fields in the authentication

-* admin panel. It also defines any required configuration table fields.

-*/

-function acp_ldap(&$new)

-{

- global $user;

-

- $tpl = '

-

- <dl>

- <dt><label for="ldap_server">' . $user->lang['LDAP_SERVER'] . $user->lang['COLON'] . '</label><br /><span>' . $user->lang['LDAP_SERVER_EXPLAIN'] . '</span></dt>

- <dd><input type="text" id="ldap_server" size="40" name="config[ldap_server]" value="' . $new['ldap_server'] . '" /></dd>

- </dl>

- <dl>

- <dt><label for="ldap_port">' . $user->lang['LDAP_PORT'] . $user->lang['COLON'] . '</label><br /><span>' . $user->lang['LDAP_PORT_EXPLAIN'] . '</span></dt>

- <dd><input type="text" id="ldap_port" size="40" name="config[ldap_port]" value="' . $new['ldap_port'] . '" /></dd>

- </dl>

- <dl>

- <dt><label for="ldap_dn">' . $user->lang['LDAP_DN'] . $user->lang['COLON'] . '</label><br /><span>' . $user->lang['LDAP_DN_EXPLAIN'] . '</span></dt>

- <dd><input type="text" id="ldap_dn" size="40" name="config[ldap_base_dn]" value="' . $new['ldap_base_dn'] . '" /></dd>

- </dl>

- <dl>

- <dt><label for="ldap_uid">' . $user->lang['LDAP_UID'] . $user->lang['COLON'] . '</label><br /><span>' . $user->lang['LDAP_UID_EXPLAIN'] . '</span></dt>

- <dd><input type="text" id="ldap_uid" size="40" name="config[ldap_uid]" value="' . $new['ldap_uid'] . '" /></dd>

- </dl>

- <dl>

- <dt><label for="ldap_user_filter">' . $user->lang['LDAP_USER_FILTER'] . $user->lang['COLON'] . '</label><br /><span>' . $user->lang['LDAP_USER_FILTER_EXPLAIN'] . '</span></dt>

- <dd><input type="text" id="ldap_user_filter" size="40" name="config[ldap_user_filter]" value="' . $new['ldap_user_filter'] . '" /></dd>

- </dl>

- <dl>

- <dt><label for="ldap_email">' . $user->lang['LDAP_EMAIL'] . $user->lang['COLON'] . '</label><br /><span>' . $user->lang['LDAP_EMAIL_EXPLAIN'] . '</span></dt>

- <dd><input type="email" id="ldap_email" size="40" name="config[ldap_email]" value="' . $new['ldap_email'] . '" /></dd>

- </dl>

- <dl>

- <dt><label for="ldap_user">' . $user->lang['LDAP_USER'] . $user->lang['COLON'] . '</label><br /><span>' . $user->lang['LDAP_USER_EXPLAIN'] . '</span></dt>

- <dd><input type="text" id="ldap_user" size="40" name="config[ldap_user]" value="' . $new['ldap_user'] . '" /></dd>

- </dl>

- <dl>

- <dt><label for="ldap_password">' . $user->lang['LDAP_PASSWORD'] . $user->lang['COLON'] . '</label><br /><span>' . $user->lang['LDAP_PASSWORD_EXPLAIN'] . '</span></dt>

- <dd><input type="password" id="ldap_password" size="40" name="config[ldap_password]" value="' . $new['ldap_password'] . '" autocomplete="off" /></dd>

- </dl>

- ';

-

- // These are fields required in the config table

- return array(

- 'tpl' => $tpl,

- 'config' => array('ldap_server', 'ldap_port', 'ldap_base_dn', 'ldap_uid', 'ldap_user_filter', 'ldap_email', 'ldap_user', 'ldap_password')

- );

-}