<?php
/**
* Socket communication class.
*
* Originally designed for use with DirectAdmin's API, this class will fill any HTTP socket need.
*
* Very, very basic usage:
* $Socket = new HTTPSocket;
* echo $Socket->get('http://user:pass@somesite.com/somedir/some.file?query=string&this=that');
*
* @author Phi1 'l0rdphi1' Stier <l0rdphi1@liquenox.net>
* @package HTTPSocket
* @version 3.0.4
*/
class HTTPSocket {
var $version = '3.0.4';
/* all vars are private except $error, $query_cache, and $doFollowLocationHeader */
var $method = 'GET';
var $remote_host;
var $remote_port;
var $remote_uname;
var $remote_passwd;
var $result;
var $result_header;
var $result_body;
var $result_status_code;
var $lastTransferSpeed;
var $bind_host;
var $error = array();
var $warn = array();
var $query_cache = array();
var $doFollowLocationHeader = TRUE;
var $redirectURL;
var $max_redirects = 5;
var $ssl_setting_message = 'DirectAdmin appears to be using SSL. Change your script to connect to ssl://';
var $extra_headers = array();
var $proxy = false;
var $proxy_headers = array();
/**
* Create server "connection".
*
*/
function connect($host, $port = '' )
{
if (!is_numeric($port))
{
$port = 80;
}
$this->remote_host = $host;
$this->remote_port = $port;
}
function bind( $ip = '' )
{
if ( $ip == '' )
{
$ip = $_SERVER['SERVER_ADDR'];
}
$this->bind_host = $ip;
}
/**
* Change the method being used to communicate.
*
* @param string|null request method. supports GET, POST, and HEAD. default is GET
*/
function set_method( $method = 'GET' )
{
$this->method = strtoupper($method);
}
/**
* Specify a username and password.
*
* @param string|null username. defualt is null
* @param string|null password. defualt is null
*/
function set_login( $uname = '', $passwd = '' )
{
if ( strlen($uname) > 0 )
{
$this->remote_uname = $uname;
}
if ( strlen($passwd) > 0 )
{
$this->remote_passwd = $passwd;
}
}
/**
* For pass through, this function writes the data in chunks.
*/
private function stream_chunk($ch, $data)
{
echo($data);
return strlen($data);
}
private function stream_header($ch, $data)
{
if (!preg_match('/^HTTP/i', $data))
{
header($data);
}
return strlen($data);
}
/**
* Query the server
*
* @param string containing properly formatted server API. See DA API docs and examples. Http:// URLs O.K. too.
* @param string|array query to pass to url
* @param int if connection KB/s drops below value here, will drop connection
*/
function query( $request, $content = '', $doSpeedCheck = 0 )
{
$this->error = $this->warn = array();
$this->result_status_code = NULL;
$is_ssl = FALSE;
// is our request a http:// ... ?
if (preg_match('!^http://!i',$request) || preg_match('!^https://!i',$request))
{
$location = parse_url($request);
if (preg_match('!^https://!i',$request))
{
$this->connect('https://'.$location['host'],$location['port']);
}
else
$this->connect('http://'.$location['host'],$location['port']);
$this->set_login($location['user'],$location['pass']);
$request = $location['path'];
$content = $location['query'];
if ( strlen($request) < 1 )
{
$request = '/';
}
}
if (preg_match('!^ssl://!i', $this->remote_host))
$this->remote_host = 'https://'.substr($this->remote_host, 6);
if (preg_match('!^tcp://!i', $this->remote_host))
$this->remote_host = 'http://'.substr($this->remote_host, 6);
if (preg_match('!^https://!i', $this->remote_host))
$is_ssl = TRUE;
$array_headers = array(
'Host' => ( $this->remote_port == 80 ? $this->remote_host : "$this->remote_host:$this->remote_port" ),
'Accept' => '*/*',
'Connection' => 'Close' );
foreach ( $this->extra_headers as $key => $value )
{
$array_headers[$key] = $value;
}
$this->result = $this->result_header = $this->result_body = '';
// was content sent as an array? if so, turn it into a string
if (is_array($content))
{
$pairs = array();
foreach ( $content as $key => $value )
{
$pairs[] = "$key=".urlencode($value);
}
$content = join('&',$pairs);
unset($pairs);
}
$OK = TRUE;
if ($this->method == 'GET' && isset($content) && $content != '')
$request .= '?'.$content;
$ch = curl_init($this->remote_host.':'.$this->remote_port.$request);
if ($is_ssl)
{
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); //1
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false); //2
//curl_setopt($ch, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1_2);
}
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_USERAGENT, "HTTPSocket/$this->version");
curl_setopt($ch, CURLOPT_FORBID_REUSE, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 100);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
curl_setopt($ch, CURLOPT_HEADER, 1);
if ($this->proxy)
{
curl_setopt($ch, CURLOPT_RETURNTRANSFER,false);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLINFO_HEADER_OUT, false);
curl_setopt($ch, CURLOPT_BUFFERSIZE, 8192); // 8192
curl_setopt($ch, CURLOPT_WRITEFUNCTION, array($this, "stream_chunk"));
curl_setopt($ch, CURLOPT_HEADERFUNCTION, array($this, "stream_header"));
}
curl_setopt($ch, CURLOPT_LOW_SPEED_LIMIT, 512);
curl_setopt($ch, CURLOPT_LOW_SPEED_TIME, 120);
// instance connection
if ($this->bind_host)
{
curl_setopt($ch, CURLOPT_INTERFACE, $this->bind_host);
}
// if we have a username and password, add the header
if ( isset($this->remote_uname) && isset($this->remote_passwd) )
{
curl_setopt($ch, CURLOPT_USERPWD, $this->remote_uname.':'.$this->remote_passwd);
}
// for DA skins: if $this->remote_passwd is NULL, try to use the login key system
if ( isset($this->remote_uname) && $this->remote_passwd == NULL )
{
curl_setopt($ch, CURLOPT_COOKIE, "session={$_SERVER['SESSION_ID']}; key={$_SERVER['SESSION_KEY']}");
}
// if method is POST, add content length & type headers
if ( $this->method == 'POST' )
{
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $content);
//$array_headers['Content-type'] = 'application/x-www-form-urlencoded';
$array_headers['Content-length'] = strlen($content);
}
curl_setopt($ch, CURLOPT_HTTPHEADER, $array_headers);
if( !($this->result = curl_exec($ch)) )
{
$this->error[] .= curl_error($ch);
$OK = FALSE;
}
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$this->result_header = substr($this->result, 0, $header_size);
$this->result_body = substr($this->result, $header_size);
$this->result_status_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$this->lastTransferSpeed = curl_getinfo($ch, CURLINFO_SPEED_DOWNLOAD) / 1024;
curl_close($ch);
$this->query_cache[] = $this->remote_host.':'.$this->remote_port.$request;
$headers = $this->fetch_header();
// did we get the full file?
if ( !empty($headers['content-length']) && $headers['content-length'] != strlen($this->result_body) )
{
$this->result_status_code = 206;
}
// now, if we're being passed a location header, should we follow it?
if ($this->doFollowLocationHeader)
{
//dont bother if we didn't even setup the script correctly
if (isset($headers['x-use-https']) && $headers['x-use-https']=='yes')
die($this->ssl_setting_message);
if (isset($headers['location']))
{
if ($this->max_redirects <= 0)
die("Too many redirects on: ".$headers['location']);
$this->max_redirects--;
$this->redirectURL = $headers['location'];
$this->query($headers['location']);
}
}
}
function getTransferSpeed()
{
return $this->lastTransferSpeed;
}
/**
* The quick way to get a URL's content :)
*
* @param string URL
* @param boolean return as array? (like PHP's file() command)
* @return string result body
*/
function get($location, $asArray = FALSE )
{
$this->query($location);
if ( $this->get_status_code() == 200 )
{
if ($asArray)
{
return preg_split("/\n/",$this->fetch_body());
}
return $this->fetch_body();
}
return FALSE;
}
/**
* Returns the last status code.
* 200 = OK;
* 403 = FORBIDDEN;
* etc.
*
* @return int status code
*/
function get_status_code()
{
return $this->result_status_code;
}
/**
* Adds a header, sent with the next query.
*
* @param string header name
* @param string header value
*/
function add_header($key,$value)
{
$this->extra_headers[$key] = $value;
}
/**
* Clears any extra headers.
*
*/
function clear_headers()
{
$this->extra_headers = array();
}
/**
* Return the result of a query.
*
* @return string result
*/
function fetch_result()
{
return $this->result;
}
/**
* Return the header of result (stuff before body).
*
* @param string (optional) header to return
* @return array result header
*/
function fetch_header( $header = '' )
{
if ($this->proxy)
return $this->proxy_headers;
$array_headers = preg_split("/\r\n/",$this->result_header);
$array_return = array( 0 => $array_headers[0] );
unset($array_headers[0]);
foreach ( $array_headers as $pair )
{
if ($pair == '' || $pair == "\r\n") continue;
list($key,$value) = preg_split("/: /",$pair,2);
$array_return[strtolower($key)] = $value;
}
if ( $header != '' )
{
return $array_return[strtolower($header)];
}
return $array_return;
}
/**
* Return the body of result (stuff after header).
*
* @return string result body
*/
function fetch_body()
{
return $this->result_body;
}
/**
* Return parsed body in array format.
*
* @return array result parsed
*/
function fetch_parsed_body()
{
parse_str($this->result_body,$x);
return $x;
}
/**
* Set a specifc message on how to change the SSL setting, in the event that it's not set correctly.
*/
function set_ssl_setting_message($str)
{
$this->ssl_setting_message = $str;
}
}