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<?php
/**
*
* LDAP auth plug-in for phpBB3
*
* Authentication plug-ins is largely down to Sergey Kanareykin, our thanks to him.
*
* This is for initial authentication via an LDAP server, user information is then
* obtained from the integrated user table
*
* You can do any kind of checking you like here ... the return data format is
* either the resulting row of user information, an integer zero (indicating an
* inactive user) or some error string
*
* @package login
* @version $Id$
* @copyright (c) 2005 phpBB Group
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
*/
/**
* Only allow changing authentication to ldap if we can connect to the ldap server
*/
function init_ldap()
{
global $config, $user;
if (!extension_loaded('ldap'))
{
return $user->lang['LDAP_NO_LDAP_EXTENSION'];
}
if (!($ldap = @ldap_connect($config['ldap_server'])))
{
return $user->lang['LDAP_NO_SERVER_CONNECTION'];
}
@ldap_set_option($ldap, LDAP_OPT_PROTOCOL_VERSION, 3);
// We'll get a notice here that we don't want, if we cannot connect to the server.
// ldap_connect only checks whether the specified server is valid, so the connection might still fail
ob_start();
$search = @ldap_search($ldap, $config['ldap_base_dn'], $config['ldap_uid'] . '=' . $user->data['username'], array($config['ldap_uid']));
if (ob_get_clean())
{
return $user->lang['LDAP_NO_SERVER_CONNECTION'];
}
$result = @ldap_get_entries($ldap, $search);
@ldap_close($ldap);
if (is_array($result) && sizeof($result) > 1)
{
return false;
}
return sprintf($user->lang['LDAP_NO_IDENTITY'], $user->data['username']);
}
/**
* Login function
*/
function login_ldap(&$username, &$password)
{
global $db, $config;
if (!extension_loaded('ldap'))
{
return array(
'status' => LOGIN_ERROR_EXTERNAL_AUTH,
'error_msg' => 'LDAP_NO_LDAP_EXTENSION',
'user_row' => array('user_id' => ANONYMOUS),
);
}
if (!($ldap = @ldap_connect($config['ldap_server'])))
{
return array(
'status' => LOGIN_ERROR_EXTERNAL_AUTH,
'error_msg' => 'LDAP_NO_SERVER_CONNECTION',
'user_row' => array('user_id' => ANONYMOUS),
);
}
@ldap_set_option($ldap, LDAP_OPT_PROTOCOL_VERSION, 3);
$search = @ldap_search($ldap, $config['ldap_base_dn'], $config['ldap_uid'] . '=' . $username, array($config['ldap_uid']));
$result = @ldap_get_entries($ldap, $search);
if (is_array($result) && sizeof($result) > 1)
{
if (@ldap_bind($ldap, $result[0]['dn'], $password))
{
@ldap_close($ldap);
$sql ='SELECT user_id, username, user_password, user_passchg, user_email, user_type
FROM ' . USERS_TABLE . "
WHERE username = '" . $db->sql_escape($username) . "'";
$result = $db->sql_query($sql);
$row = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
if ($row)
{
// User inactive...
if ($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' => $row,
);
}
}
else
{
@ldap_close($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($ldap);
return array(
'status' => LOGIN_ERROR_USERNAME,
'error_msg' => 'LOGIN_ERROR_USERNAME',
'user_row' => array('user_id' => ANONYMOUS),
);
}
/**
* This function is used to output any required fields in the authentication
* admin panel. It also defines any required configuration table fields.
*/
function admin_ldap(&$new)
{
global $user;
/**
* @todo Using same approach with cfg_build_template?
*/
$tpl = '
<dl>
<dt><label for="ldap_server">' . $user->lang['LDAP_SERVER'] . ':</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_dn">' . $user->lang['LDAP_DN'] . ':</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'] . ':</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>
';
// These are fields required in the config table
return array(
'tpl' => $tpl,
'config' => array('ldap_server', 'ldap_base_dn', 'ldap_uid')
);
}
/**
* Would be nice to allow syncing of 'appropriate' data when user updates
* their username, password, etc. ... should be up to the plugin what data
* is updated.
*
* @todo implement this functionality (probably 3.2)
*
* @param new|update|delete $mode defining the action to take on user updates
*/
function usercp_ldap($mode)
{
global $db, $config;
}
?>
|
