2022-10-05 17:20:02 +00:00
|
|
|
<?php
|
|
|
|
|
// HTTP proxy implementation with PHP socket
|
2022-10-05 17:27:51 +00:00
|
|
|
// Namhyeon Go <gnh1201@gmail.com>
|
2022-10-07 04:55:07 +00:00
|
|
|
// Created at: 2022-10-06
|
2022-11-25 10:32:17 +00:00
|
|
|
// Updated at: 2022-11-25
|
2022-10-05 17:20:02 +00:00
|
|
|
|
2022-11-25 12:37:34 +00:00
|
|
|
define("PHP_HTTPPROXY_VERSION", "0.1.3");
|
|
|
|
|
|
2022-10-07 04:48:58 +00:00
|
|
|
if (strpos($_SERVER['HTTP_USER_AGENT'], "php-httpproxy/") !== 0) {
|
2022-11-25 13:19:31 +00:00
|
|
|
exit('<!DOCTYPE html><html><head><title>It works!</title><meta charset="utf-8"></head><body><h1>It works!</h1><p><a href="https://github.com/gnh1201/php-httpproxy">Download the client</a></p><hr><p>php-httpproxy/' . PHP_HTTPPROXY_VERSION . ' (Server; PHP ' . phpversion() . '; abuse@catswords.net)</p></body></html>');
|
2022-10-07 04:48:58 +00:00
|
|
|
}
|
|
|
|
|
|
2022-10-05 17:25:44 +00:00
|
|
|
ini_set("default_socket_timeout", 1); // must be. because of `feof()` works
|
2022-10-06 03:40:40 +00:00
|
|
|
ini_set("max_execution_time", 0);
|
2022-10-05 17:20:02 +00:00
|
|
|
|
2022-10-06 12:03:05 +00:00
|
|
|
function parse_headers($str) { // Parses HTTP headers into an array
|
2022-10-06 12:48:49 +00:00
|
|
|
// https://stackoverflow.com/questions/16934409/curl-as-proxy-deal-with-https-connect-method
|
|
|
|
|
// https://stackoverflow.com/questions/12433958/how-to-parse-response-headers-in-php
|
2022-10-06 12:03:05 +00:00
|
|
|
$headers = array();
|
2022-10-05 17:20:02 +00:00
|
|
|
|
2022-10-06 12:03:05 +00:00
|
|
|
$lines = preg_split("'\r?\n'", $str);
|
2022-10-06 02:05:59 +00:00
|
|
|
|
2022-10-06 12:03:05 +00:00
|
|
|
$first_line = array_shift($lines);
|
|
|
|
|
$headers['@method'] = explode(' ', $first_line);
|
2022-10-06 02:39:40 +00:00
|
|
|
|
2022-10-06 12:03:05 +00:00
|
|
|
foreach ($lines as $line) {
|
|
|
|
|
if (!preg_match('/^([^:]+):(.*)$/', $line, $out)) continue;
|
|
|
|
|
$headers[$out[1]] = trim($out[2]);
|
|
|
|
|
}
|
2022-10-05 17:20:02 +00:00
|
|
|
|
2022-10-06 12:03:05 +00:00
|
|
|
return $headers;
|
|
|
|
|
}
|
2022-10-05 17:20:02 +00:00
|
|
|
|
2022-10-06 12:03:05 +00:00
|
|
|
$data = json_decode(file_get_contents('php://input'), true);
|
|
|
|
|
|
|
|
|
|
$buffer_size = $data['chunksize'];
|
2022-10-05 17:20:02 +00:00
|
|
|
|
2022-10-06 12:03:05 +00:00
|
|
|
$relay_data = base64_decode($data['data']);
|
|
|
|
|
$relay_headers = parse_headers($relay_data);
|
|
|
|
|
$relay_port = intval($data['port']);
|
|
|
|
|
$relay_scheme = $data['scheme'];
|
|
|
|
|
$relay_hostname = $data['server'];
|
|
|
|
|
|
2022-11-25 10:32:17 +00:00
|
|
|
if ($relay_scheme == "https") {
|
|
|
|
|
$relay_hostname = "tls://" . $relay_hostname;
|
|
|
|
|
}
|
|
|
|
|
|
2022-10-06 12:03:05 +00:00
|
|
|
switch ($relay_headers['@method'][0]) {
|
2022-11-25 10:32:17 +00:00
|
|
|
case "CONNECT":
|
2022-10-06 12:03:05 +00:00
|
|
|
echo sprintf("%s 200 Connection Established\r\n\r\n", $relay_headers['@method'][2]);
|
|
|
|
|
break;
|
|
|
|
|
|
2022-11-25 10:32:17 +00:00
|
|
|
default:
|
2022-10-06 12:03:05 +00:00
|
|
|
$fp = fsockopen($relay_hostname, $relay_port, $errno, $errstr, 1);
|
|
|
|
|
|
|
|
|
|
if (!$fp) {
|
|
|
|
|
echo "$errstr ($errno)<br />\n";
|
|
|
|
|
} else {
|
|
|
|
|
fwrite($fp, $relay_data);
|
|
|
|
|
|
|
|
|
|
$buf = null;
|
|
|
|
|
while (!feof($fp) && $buf !== false) {
|
|
|
|
|
$buf = fgets($fp, $buffer_size);
|
|
|
|
|
echo $buf;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fclose($fp);
|
|
|
|
|
}
|
2022-11-25 10:32:17 +00:00
|
|
|
}
|
