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Update index.php

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Namhyeon Go 2024-02-26 13:49:14 +09:00 committed by GitHub
parent 61c7ceceef
commit b01543899a
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1 changed files with 57 additions and 19 deletions
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index.php
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@ -1,6 +1,6 @@
<?php
// Caterpillar - The simple and parasitic web proxy with spam filter
// Namhyeon Go <abuse@catswords.net>
// Namhyeon Go (Catswords Research) <abuse@catswords.net>
// https://github.com/gnh1201/caterpillar
// Created at: 2022-10-06
// Updated at: 2024-02-26
@ -14,6 +14,14 @@ if (strpos($_SERVER['HTTP_USER_AGENT'], "php-httpproxy/") !== 0) {
ini_set("default_socket_timeout", 1); // must be. because of `feof()` works
ini_set("max_execution_time", 0);
function jsonrpc2_error_encode($error) {
$data = array(
"jsonrpc" => "2.0",
"error" => $error
);
return json_encode($data);
}
function parse_headers($str) { // Parses HTTP headers into an array
// https://stackoverflow.com/questions/16934409/curl-as-proxy-deal-with-https-connect-method
// https://stackoverflow.com/questions/12433958/how-to-parse-response-headers-in-php
@ -34,36 +42,46 @@ function parse_headers($str) { // Parses HTTP headers into an array
// stateless mode
function relay_request($params) {
$buffer_size = $params['chunksize'];
$relay_data = base64_decode($params['data']);
$relay_headers = parse_headers($relay_data);
$relay_port = intval($params['port']);
$relay_scheme = $params['scheme'];
$relay_hostname = $params['server'];
if (in_array($relay_scheme, array("https", "ssl", "tls"))) {
$relay_hostname = "tls://" . $relay_hostname;
$buffer_size = $params['buffer_size'];
$data = base64_decode($params['data']);
$rawdata_length = intval($params['data_length']);
$headers = parse_headers($data);
$client_address = $params['client_address'];
$client_port = intval($params['client_port']);
$client_encoding = $params['client_encoding'];
$remote_address = $params['remote_address'];
$remote_port = intval($params['remote_port']);
$scheme = $params['scheme'];
$url = $params['url'];
$datetime = $params['datetime']; // format: %Y-%m-%d %H:%M:%S.%f
if (in_array($scheme, array("https", "ssl", "tls"))) {
$remote_address = "tls://" . $remote_address;
}
switch ($relay_headers['@method'][0]) {
case "CONNECT":
echo sprintf("%s 200 Connection Established\r\n\r\n", $relay_headers['@method'][2]);
break;
default:
$fp = fsockopen($relay_hostname, $relay_port, $errno, $errstr, 1);
$fp = fsockopen($remote_address, $remote_port, $error_code, $error_message, 1);
if (!$fp) {
echo "$errstr ($errno)<br />\n";
$error = array(
"status" => 400,
"code" => $error_code,
"message" => $error_message
);
echo "HTTP/1.1 400 Bad Request\r\n\r\n" . jsonrpc2_error_encode($error);
} else {
fwrite($fp, $relay_data);
fwrite($fp, $data);
$buf = null;
while (!feof($fp) && $buf !== false) {
$buf = fgets($fp, $buffer_size);
echo $buf;
}
fclose($fp);
}
}
@ -71,7 +89,27 @@ function relay_request($params) {
// stateful mode
function relay_connect($params) {
// todo
$buffer_size = $params['buffer_size'];
$client_address = $params['client_address'];
$client_port = intval($params['client_port']);
$client_encoding = $params['client_encoding'];
$remote_address = $params['remote_address'];
$remote_port = intval($params['remote_port']);
$scheme = $params['scheme'];
$url = $params['url'];
$datetime = $params['datetime']; // format: %Y-%m-%d %H:%M:%S.%f
$fp = fsockopen($client_address, $client_port, $error_code, $error_message, 1);
if (!$fp) {
$error = array(
"status" => 400,
"code" => $error_code,
"message" => $error_message
);
echo "HTTP/1.1 400 Bad Request\r\n\r\n" . jsonrpc2_error_encode($error);
} else {
// todo
}
}
// parse context