<?php

/*
 +-----------------------------------------------------------------------+
 | bin/modcss.php                                                        |
 |                                                                       |
 | This file is part of the RoundCube Webmail client                     |
 | Copyright (C) 2007-2008, RoundCube Dev. - Switzerland                 |
 | Licensed under the GNU GPL                                            |
 |                                                                       |
 | PURPOSE:                                                              |
 |   Modify CSS source from a URL                                        |
 |                                                                       |
 +-----------------------------------------------------------------------+
 | Author: Thomas Bruederli <roundcube@gmail.com>                        |
 +-----------------------------------------------------------------------+

 $Id$

*/

define('INSTALL_PATH', realpath(dirname(__FILE__) . '/..') . '/');
require INSTALL_PATH . 'program/include/iniset.php';

$RCMAIL = rcmail::get_instance();

$source = "";
if (!empty($RCMAIL->user->ID) && ($url = preg_replace('/[^a-z0-9.-_\?\$&=%]/i', '', $_GET['u'])))
{
	$a_uri = parse_url($url);
	$port = $a_uri['port'] ? $a_uri['port'] : 80;
	$host = $a_uri['host'];
	$path = $a_uri['path'] . ($a_uri['query'] ? '?'.$a_uri['query'] : '');


	if ($fp = fsockopen($host, $port, $errno, $errstr, 30))
	{
		$out = "GET $path HTTP/1.0\r\n";
		$out .= "Host: $host\r\n";
		$out .= "Connection: Close\r\n\r\n";
		fwrite($fp, $out);

		$header = true;
		while (!feof($fp))
		{
			$line = trim(fgets($fp, 4048));
			
			if ($header && preg_match('/^HTTP\/1\..\s+(\d+)/', $line, $regs) && intval($regs[1]) != 200)
				break;
			else if (empty($line) && $header)
				$header = false;
			else if (!$header)
				$source .= "$line\n";
		}
		fclose($fp);
	 }
}

if (!empty($source))
{
	header("Content-Type: text/css");
	echo rcmail_mod_css_styles($source, preg_replace('/[^a-z0-9]/i', '', $_GET['c']), $url);
}
else {
	header("HTTP/1.0 404 Not Found");
	echo "Requires a valid user session and source url";
}

?>