Proxy.php-梧桐雨的遨游内网漫游

<?php
//@KaiyiZhang Github
//
////////////////////////////////////////////////////////////////////////////////
// Description:
// Script to redirect the request http://host/proxy.php?url=http://someUrl // to http://someUrl .
//
// This script can be used to circumvent javascript's security requirements
// which prevent a URL from an external web site being called.
//
// Author: Nedjo Rogers
////////////////////////////////////////////////////////////////////////////////
// read in the variables
if(array_key_exists('HTTP_SERVERURL', $_SERVER)){
$onlineresource=$_SERVER['HTTP_SERVERURL'];
}else{
$onlineresource=$_REQUEST['url'];
}
$parsed = parse_url($onlineresource);
$host = @$parsed["host"];
$path = @$parsed["path"] . "?" . @$parsed["query"];
if(empty($host)) {
$host = "localhost";
}
$port = @$parsed['port'];
if(empty($port)){
$port="80";
}
$contenttype = @$_REQUEST['contenttype'];
if(empty($contenttype)) {
$contenttype = "text/html";
}
$data = @$GLOBALS["HTTP_RAW_POST_DATA"];
// define content type
header("Content-type: " . $contenttype);
if(empty($data)) {
$result = send_request();
}
else {
// post XML
$posting = new HTTP_Client($host, $port, $data);
$posting->set_path($path);
$result = $posting->send_request();
}
// strip leading text from result and output result
$len=strlen($result);
$pos = strpos($result, "<");
if($pos > 1) {
$result = substr($result, $pos, $len);
}
//$result = str_replace("xlink:","",$result);
echo $result;
// define class with functions to open socket and post XML
// from http://www.phpbuilder.com/annotate/message.php3?id=1013274 by Richard Hundt
class HTTP_Client {
var $host;
var $path;
var $port;
var $data;
var $socket;
var $errno;
var $errstr;
var $timeout;
var $buf;
var $result;
var $agent_name = "MyAgent";
//Constructor, timeout 30s
function HTTP_Client($host, $port, $data, $timeout = 30) {
$this->host = $host;
$this->port = $port;
$this->data = $data;
$this->timeout = $timeout;
}

//Opens a connection
function connect() {
$this->socket = fsockopen($this->host,
$this->port,
$this->errno,
$this->errstr,
$this->timeout
);
if(!$this->socket)
return false;
else
return true;
}

//Set the path
function set_path($path) {
$this->path = $path;
}

//Send request and clean up
function send_request() {
if(!$this->connect()) {
return false;
}
else {
$this->result = $this->request($this->data);
return $this->result;
}
}

function request($data) {
$this->buf = "";
fwrite($this->socket,
"POST $this->path HTTP/1.0\r\n".
"Host:$this->host\r\n".
"User-Agent: $this->agent_name\r\n".
"Content-Type: application/html\r\n".
"Content-Length: ".strlen($data).
"\r\n".
"\r\n".$data.
"\r\n"
);

while(!feof($this->socket))
$this->buf .= fgets($this->socket, 2048);
$this->close();
return $this->buf;
}

function close() {
fclose($this->socket);
}
}
function send_request() {
global $onlineresource;
$ch = curl_init();
$timeout = 5; // set to zero for no timeout
// fix to allow HTTPS connections with incorrect certificates
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt ($ch, CURLOPT_URL,$onlineresource);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
curl_setopt ($ch, CURLOPT_ENCODING , "gzip, deflate");
$file_contents = curl_exec($ch);
curl_close($ch);
$lines = array();
$lines = explode("\n", $file_contents);
if(!($response = $lines)) {
echo "Unable to retrieve file '$service_request'";
}
$response = implode("",$response);
return $response;
}
?>