mirror of
https://github.com/roundcube/roundcubemail.git
synced 2026-02-26 12:31:19 +01:00
79 lines
3.0 KiB
PHP
79 lines
3.0 KiB
PHP
<?php
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/*
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+-----------------------------------------------------------------------+
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| This file is part of the Roundcube Webmail client |
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| Copyright (C) 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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class rcmail_action_utils_modcss extends rcmail_action
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{
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/**
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* Request handler.
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*
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* @param array $args Arguments from the previous step(s)
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*/
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#[Override]
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public function run($args = [])
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{
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$rcmail = rcmail::get_instance();
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$url = rcube_utils::get_input_string('_u', rcube_utils::INPUT_GET);
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$url = preg_replace('![^a-z0-9.-]!i', '', $url);
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if ($url === null || empty($_SESSION['modcssurls'][$url])) {
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$rcmail->output->sendExitError(403, 'Unauthorized request');
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}
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$realurl = $_SESSION['modcssurls'][$url];
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// don't allow any other connections than http(s)
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if (!preg_match('~^https?://~i', $realurl, $matches)) {
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$rcmail->output->sendExitError(403, 'Invalid URL');
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}
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$source = false;
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$ctype = null;
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try {
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$client = rcube::get_instance()->get_http_client();
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$response = $client->get($realurl);
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$source = $response->getBody();
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$ctype = $response->getHeader('Content-Type');
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$ctype = !empty($ctype) ? $ctype[0] : '';
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} catch (Exception $e) {
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rcube::raise_error($e, true, false);
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}
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$cid = rcube_utils::get_input_string('_c', rcube_utils::INPUT_GET);
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$prefix = rcube_utils::get_input_string('_p', rcube_utils::INPUT_GET);
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$container_id = preg_replace('/[^a-z0-9]/i', '', $cid);
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$css_prefix = preg_replace('/[^a-z0-9]/i', '', $prefix);
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$ctype_regexp = '~^text/(css|plain)~i';
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if ($source !== false && $ctype && preg_match($ctype_regexp, $ctype)) {
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$rcmail->output->sendExit(
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rcube_utils::mod_css_styles($source, $container_id, false, $css_prefix),
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['Content-Type: text/css']
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);
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}
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$rcmail->output->sendExitError(404, 'Invalid response returned by server');
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}
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}
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