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84 lines
3.1 KiB
PHP
84 lines
3.1 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) 2007-2014, The Roundcube Dev Team |
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| Licensed under the GNU General Public License version 3 or |
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| any later version with exceptions for skins & plugins. |
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| See the README file for a full license statement. |
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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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| Author: Aleksander Machniak <alec@alec.pl> |
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+-----------------------------------------------------------------------+
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*/
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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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exit("Unauthorized request");
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}
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// don't allow any other connections than http(s)
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if (!preg_match('~^(https?)://~i', $realurl, $matches)) {
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header('HTTP/1.1 403 Forbidden');
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exit("Invalid URL");
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}
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if (ini_get('allow_url_fopen')) {
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$scheme = strtolower($matches[1]);
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$options = array(
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$scheme => array(
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'method' => 'GET',
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'timeout' => 15,
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)
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);
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$context = stream_context_create($options);
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$source = @file_get_contents($realurl, false, $context);
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// php.net/manual/en/reserved.variables.httpresponseheader.php
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$headers = implode("\n", (array) $http_response_header);
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}
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else if (function_exists('curl_init')) {
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$curl = curl_init($realurl);
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curl_setopt($curl, CURLOPT_TIMEOUT, 15);
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curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 15);
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curl_setopt($curl, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS);
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curl_setopt($curl, CURLOPT_ENCODING, '');
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curl_setopt($curl, CURLOPT_HEADER, true);
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curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
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$data = curl_exec($curl);
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if ($data !== false) {
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list($headers, $source) = explode("\r\n\r\n", $data, 2);
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}
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else {
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$headers = false;
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$source = false;
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}
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}
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else {
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header('HTTP/1.1 403 Forbidden');
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exit("HTTP connections disabled");
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}
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$ctype_regexp = '~Content-Type:\s+text/(css|plain)~i';
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if ($source !== false && preg_match($ctype_regexp, $headers)) {
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header('Content-Type: text/css');
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echo rcube_utils::mod_css_styles($source, preg_replace('/[^a-z0-9]/i', '', $_GET['_c']));
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exit;
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}
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header('HTTP/1.0 404 Not Found');
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exit("Invalid response returned by server");
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