<?php
/**
 * $Header: /cvsroot/bitweaver/_bit_users/validate.php,v 1.11 2006/03/01 18:35:20 spiderr Exp $
 *
 * Copyright (c) 2004 bitweaver.org
 * Copyright (c) 2003 tikwiki.org
 * Copyright (c) 2002-2003, Luis Argerich, Garland Foster, Eduardo Polidor, et. al.
 * All Rights Reserved. See copyright.txt for details and a complete list of authors.
 * Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details
 *
 * $Id: validate.php,v 1.11 2006/03/01 18:35:20 spiderr Exp $
 * @package users
 * @subpackage functions
 */
$bypass_siteclose_check = 'y';

/**
 * required setup
 */
require_once( '../bit_setup_inc.php' );
global $gBitSystem;

//Remember where user is logging in from and send them back later; using session variable for those of us who use WebISO services
if( empty( $_SESSION['loginfrom'] ) ) {
	if( isset( $_SERVER['HTTP_REFERER'] ) && !strpos( $_SERVER['HTTP_REFERER'], 'login.php' )  && !strpos( $_SERVER['HTTP_REFERER'], 'register.php' ) ) {
		$from = parse_url( $_SERVER['HTTP_REFERER'] );
		$_SESSION['loginfrom'] = $from['path'];
	}
}

$https_mode = isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on';
$https_login_required = $gBitSystem->getConfig('https_login_required', 'n');
if ($gBitSystem->isFeatureActive( 'https_login_required' ) && !$https_mode) {
	$url = $gBitSystem->getConfig( 'https_domain' );
	$https_port = $gBitSystem->getConfig('https_port', $https_port);
	if ($https_port != 443)
		$url .= ':' . $https_port;
	$url .= $gBitSystem->getConfig( 'https_prefix' ) . $gBitSystem->getDefaultPage();
	if (SID)
		$url .= '?' . SID;
	$url = preg_replace('/\/+/', '/', $url);
	header("Location: https://$url");
	exit;
}

$user = isset($_REQUEST['user']) ? $_REQUEST['user'] : false;
$pass = isset($_REQUEST['pass']) ? $_REQUEST['pass'] : false;
$challenge = isset($_REQUEST['challenge']) ? $_REQUEST['challenge'] : false;
$response = isset($_REQUEST['response']) ? $_REQUEST['response'] : false;

// if $referer is set, login() will return the user to whence he came
$url = $gBitUser->login( $user, $pass, $challenge, $response );
if (!preg_match('/^\w+:\/{2}/', $url)) {
	$url = httpPrefix() . $url;
}

// but if we came from a login page, let's go home (except if we got an error when login in)
if( (strpos( $url, 'login.php?' ) || strpos( $url, 'remind_password.php' )) && strpos( $url, 'login.php?error=') == -1) {
	$url = $gBitSystem->getDefaultPage();
}

header('Location: ' . $url);
exit;
?>