95 lines
3.0 KiB
PHP
95 lines
3.0 KiB
PHP
|
<?php
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Proxy script to load a file from other domain
|
||
|
|
*
|
||
|
|
* PHP versions 4 and 5
|
||
|
|
*
|
||
|
|
* Copyright (c) 2010-2013 Shinya Muramatsu
|
||
|
|
*
|
||
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
||
|
|
* copy of this software and associated documentation files (the "Software"),
|
||
|
|
* to deal in the Software without restriction, including without limitation
|
||
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
||
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
||
|
|
* Software is furnished to do so, subject to the following conditions:
|
||
|
|
*
|
||
|
|
* The above copyright notice and this permission notice shall be included in
|
||
|
|
* all copies or substantial portions of the Software.
|
||
|
|
*
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
||
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
||
|
|
* DEALINGS IN THE SOFTWARE.
|
||
|
|
*
|
||
|
|
* @author Shinya Muramatsu <revulon@gmail.com>
|
||
|
|
* @copyright 2010-2013 Shinya Muramatsu
|
||
|
|
* @license http://www.opensource.org/licenses/mit-license.php MIT License
|
||
|
|
* @link http://flashcanvas.net/
|
||
|
|
* @link http://code.google.com/p/flashcanvas/
|
||
|
|
*/
|
||
|
|
|
||
|
|
function getHostName() {
|
||
|
|
if (isset($_SERVER['HTTP_X_FORWARDED_HOST'])) {
|
||
|
|
return $_SERVER['HTTP_X_FORWARDED_HOST'];
|
||
|
|
} else if (isset($_SERVER['HTTP_HOST'])) {
|
||
|
|
return $_SERVER['HTTP_HOST'];
|
||
|
|
} else {
|
||
|
|
return $_SERVER['SERVER_NAME'];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Whether we check referrer or not
|
||
|
|
define('CHECK_REFERRER', true);
|
||
|
|
|
||
|
|
// If necessary, specify the host where the SWF file is located
|
||
|
|
define('SWF_HOST_NAME', '');
|
||
|
|
|
||
|
|
// Check that the request comes from the same host
|
||
|
|
if (CHECK_REFERRER) {
|
||
|
|
if (empty($_SERVER['HTTP_REFERER'])) {
|
||
|
|
exit;
|
||
|
|
}
|
||
|
|
if (SWF_HOST_NAME) {
|
||
|
|
$host = SWF_HOST_NAME;
|
||
|
|
} else {
|
||
|
|
$host = getHostName();
|
||
|
|
}
|
||
|
|
$pattern = '#^https?://' . str_replace('.', '\.', $host) . '(:\d*)?/#';
|
||
|
|
if (!preg_match($pattern, $_SERVER['HTTP_REFERER'])) {
|
||
|
|
exit;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Check that the request has a valid URL parameter
|
||
|
|
if (empty($_GET['url'])) {
|
||
|
|
exit;
|
||
|
|
}
|
||
|
|
if (!preg_match('#^https?://#', $_GET['url'])) {
|
||
|
|
exit;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Percent-encode special characters in the URL
|
||
|
|
$search = array( '%', '#', ' ');
|
||
|
|
$replace = array('%25', '%23', '%20');
|
||
|
|
$url = str_replace($search, $replace, $_GET['url']);
|
||
|
|
|
||
|
|
// Disable compression
|
||
|
|
header('Content-Encoding: none');
|
||
|
|
|
||
|
|
// Load and output the file
|
||
|
|
if (extension_loaded('curl')) {
|
||
|
|
// Use cURL extension
|
||
|
|
$ch = curl_init($url);
|
||
|
|
// curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
|
||
|
|
// curl_setopt($ch, CURLOPT_MAXREDIRS, 10);
|
||
|
|
curl_exec($ch);
|
||
|
|
curl_close($ch);
|
||
|
|
} else {
|
||
|
|
// Use the http:// wrapper
|
||
|
|
readfile($url);
|
||
|
|
}
|