Código HTML:
<?php
if(!function_exists('apache_request_headers')) {
function apache_request_headers() {
$headers = array();
foreach($_SERVER as $key => $value) {
if(substr($key, 0, 5) == 'HTTP_') {
$headers[str_replace(' ', '-', ucwords(str_replace('_', ' ', strtolower(substr($key, 5)))))] = $value;
}
}
return $headers;
}
}
// Figure out requester's IP to shipt it to X-Forwarded-For
$ip = '';
if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
//echo "HTTP_CLIENT_IP: ".$ip;
} elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
//echo "HTTP_X_FORWARDED_FOR: ".$ip;
} else {
$ip = $_SERVER['REMOTE_ADDR'];
//echo "REMOTE_ADDR: ".$ip;
}
preg_match('@^(?:http://)?([^/]+)@i', $_SERVER['HTTP_REFERER'], $matches);
$host = $matches[1];
preg_match('/[^.]+\.[^.]+$/', $host, $matches);
$domainName = "{$matches[0]}";
if($domainName == $RequestDomain) {
$method = $_SERVER['REQUEST_METHOD'];
$response = proxy_request($destinationURL, ($method == "GET" ? $_GET : $_POST), $method);
$headerArray = explode("\r\n", $response[header]);
foreach($headerArray as $headerLine) {
header($headerLine);
}
echo $response[content];
} else {
echo "HTTP Referer is not recognized. Cancelling all actions";
}
function proxy_request($url, $data, $method) {
// Based on post_request from http://www.jonasjohn.de/snippets/php/post-request.htm
global $ip;
// Convert the data array into URL Parameters like a=b&foo=bar etc.
$data = http_build_query($data);
$datalength = strlen($data);
// parse the given URL
$url = parse_url($url);
if ($url['scheme'] != 'http') {
die('Error: Only HTTP request are supported !');
}
// extract host and path:
$host = $url['host'];
$path = $url['path'];
// open a socket connection on port 80 - timeout: 30 sec
$fp = fsockopen($host, 80, $errno, $errstr, 30);
if ($fp){
// send the request headers:
if($method == "POST") {
fputs($fp, "POST $path HTTP/1.1\r\n");
} else {
fputs($fp, "GET $path?$data HTTP/1.1\r\n");
}
fputs($fp, "Host: $host\r\n");
fputs($fp, "X-Forwarded-For: $ip\r\n");
fputs($fp, "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n");
$requestHeaders = apache_request_headers();
while ((list($header, $value) = each($requestHeaders))) {
if($header == "Content-Length") {
fputs($fp, "Content-Length: $datalength\r\n");
} else if($header !== "Connection" && $header !== "Host" && $header !== "Content-length") {
fputs($fp, "$header: $value\r\n");
}
}
fputs($fp, "Connection: close\r\n\r\n");
fputs($fp, $data);
$result = '';
while(!feof($fp)) {
// receive the results of the request
$result .= fgets($fp, 128);
}
}
else {
return array(
'status' => 'err',
'error' => "$errstr ($errno)"
);
}
// close the socket connection:
fclose($fp);
// split the result header from the content
$result = explode("\r\n\r\n", $result, 2);
$header = isset($result[0]) ? $result[0] : '';
$content = isset($result[1]) ? $result[1] : '';
// return as structured array:
return array(
'status' => 'ok',
'header' => $header,
'content' => $content
);
}
?>
