<?php
/*
 * Copyright (C) 2009  Nick White
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

$request = $_SERVER['REQUEST_URI'];

/* Sanitise */
if (preg_match ( '/\.\./', $request )  || /* don't go up the filesystem */
	preg_match ( '/[\'\"]/', $request )|| /* string terminators */
	preg_match ( '/\\\0/', $request ) )   /* null bytes */
{
	header('HTTP/1.0 500 Internal Error');
	echo "<h1>Error</h1>";
	exit (0);
}

$contentpath = $_SERVER['DOCUMENT_ROOT'] . '/webpages/' . $request;
$webpage = true;

/* if nothing exists in webpages directory, try root */
if ( ! is_dir($contentpath) && ! is_file($contentpath.'.php') )
{
	$contentpath = $_SERVER['DOCUMENT_ROOT'] . $request;
	$webpage = false;
}

if ( is_dir($contentpath) == TRUE )
	$contentpath .= 'index.php';
else
	$contentpath .= '.php';

if ( ! is_file($contentpath) )
{
	header('HTTP/1.0 404 Not Found');
	echo "<h1>Not Found</h1>";
	exit (0);
}

if($webpage)
{
	include($_SERVER['DOCUMENT_ROOT'] . "/includes/render-webpage.php");

	/* todo: base the function to use on content negotiation */
	render_xhtml($contentpath);
}
else
	include($contentpath);

?>