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| <?php
/**
* PHP proxy script that proxies the URL given in the "url" parameter.
*
* Sends all incoming headers, and also returns all remote headers.
* Streams the response, so that large responses should work fine.
*
* @author Christian Weiske <cweiske@cweiske.de>
*/
if (!isset($_GET['url']) || $_GET['url'] == '') {
header('HTTP/1.0 400 Bad Request');
echo "url parameter missing\n";
exit(1);
}
if (substr($_GET['url'], 0, 7) != 'http://'
&& substr($_GET['url'], 0, 8) != 'https://'
) {
header('HTTP/1.0 400 Bad Request');
echo "Only http and https URLs supported\n";
exit(1);
}
$url = $_GET['url'];
//send original http headers
$headers = [];
foreach (apache_request_headers() as $name => $value) {
if (strtolower($name) == 'host') {
continue;
}
$headers[] = $name . ': ' . $value;
}
$context = stream_context_create(
['http' => ['header' => $headers, 'ignore_errors' => true]]
);
$fp = fopen($url, 'r', false, $context);
if (!$fp) {
header('HTTP/1.0 400 Bad Request');
echo "Error fetching URL\n";
exit(1);
}
//send original headers
if (is_array($http_response_header)) {
foreach ($http_response_header as $header) {
header($header);
}
}
//stream the data in 1kiB blocks
while (!feof($fp)) {
echo fread($fp, 1024);
ob_flush();
flush();
}
fclose($fp);
?>
|
