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99 lines
2.8 KiB
PHP
99 lines
2.8 KiB
PHP
<?php
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/*
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+-----------------------------------------------------------------------+
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| program/steps/utils/modcss.inc |
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| This file is part of the Roundcube Webmail client |
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| Copyright (C) 2007-2011, The Roundcube Dev Team |
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| Licensed under the GNU GPL |
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| PURPOSE: |
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| Modify CSS source from a URL |
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+-----------------------------------------------------------------------+
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| Author: Thomas Bruederli <roundcube@gmail.com> |
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+-----------------------------------------------------------------------+
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$Id$
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*/
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$source = '';
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$url = preg_replace('![^a-z0-9.-]!i', '', $_GET['_u']);
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if ($url === null || !($realurl = $_SESSION['modcssurls'][$url])) {
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header('HTTP/1.1 403 Forbidden');
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echo "Unauthorized request";
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exit;
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}
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$a_uri = parse_url($realurl);
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$port = $a_uri['port'] ? $a_uri['port'] : 80;
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$host = $a_uri['host'];
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$path = $a_uri['path'] . ($a_uri['query'] ? '?'.$a_uri['query'] : '');
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// don't allow any other connections than http(s)
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if (strtolower(substr($a_uri['scheme'], 0, 4)) != 'http') {
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header('HTTP/1.1 403 Forbidden');
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echo "Invalid URL";
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exit;
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}
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// try to open socket connection
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if (!($fp = fsockopen($host, $port, $errno, $error, 15))) {
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header('HTTP/1.1 500 Internal Server Error');
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echo $error;
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exit;
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}
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// set timeout for socket
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stream_set_timeout($fp, 30);
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// send request
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$out = "GET $path HTTP/1.0\r\n";
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$out .= "Host: $host\r\n";
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$out .= "Connection: Close\r\n\r\n";
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fwrite($fp, $out);
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// read response
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$header = true;
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$headers = array();
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while (!feof($fp)) {
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$line = trim(fgets($fp, 4048));
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if ($header) {
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if (preg_match('/^HTTP\/1\..\s+(\d+)/', $line, $regs)
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&& intval($regs[1]) != 200) {
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break;
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}
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else if (empty($line)) {
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$header = false;
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}
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else {
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list($key, $value) = explode(': ', $line);
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$headers[strtolower($key)] = $value;
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}
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}
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else {
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$source .= "$line\n";
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}
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}
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fclose($fp);
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// check content-type header and mod styles
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$mimetype = strtolower($headers['content-type']);
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if (!empty($source) && in_array($mimetype, array('text/css','text/plain'))) {
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header('Content-Type: text/css');
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echo rcmail_mod_css_styles($source, preg_replace('/[^a-z0-9]/i', '', $_GET['_c']));
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exit;
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}
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else
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$error = "Invalid response returned by server";
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header('HTTP/1.0 404 Not Found');
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echo $error;
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exit;
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