<?php
/*======================================================================*\
|| #################################################################### ||
|| # vBulletin 5.0.0 Beta 10
|| # ---------------------------------------------------------------- # ||
|| # Copyright �2000-2012 vBulletin Solutions Inc. All Rights Reserved. ||
|| # This file may not be redistributed in whole or significant part. # ||
|| # ---------------- VBULLETIN IS NOT FREE SOFTWARE ---------------- # ||
|| # http://www.vbulletin.com | http://www.vbulletin.com/license.html # ||
|| #################################################################### ||
\*======================================================================*/

define('VURL_URL',                 1);
define('VURL_TIMEOUT',             2);
define('VURL_POST',                4);
define('VURL_HEADER',              8);
define('VURL_POSTFIELDS',         16);
define('VURL_ENCODING',           32);
define('VURL_USERAGENT',          64);
define('VURL_RETURNTRANSFER',    128);
define('VURL_HTTPHEADER',        256);

define('VURL_CLOSECONNECTION',  1024);
define('VURL_FOLLOWLOCATION',   2048);
define('VURL_MAXREDIRS',        4096);
define('VURL_NOBODY',           8192);
define('VURL_CUSTOMREQUEST',   16384);
define('VURL_MAXSIZE',         32768);
define('VURL_DIEONMAXSIZE',    65536);
define('VURL_VALIDSSLONLY',   131072);

define('VURL_ERROR_MAXSIZE',       1);
define('VURL_ERROR_SSL',           2);
define('VURL_ERROR_URL',           4);
define('VURL_ERROR_NOLIB',         8);

define('VURL_HANDLED',             1);
define('VURL_NEXT',                2);

define('VURL_STATE_HEADERS',  1);
define('VURL_STATE_LOCATION', 2);
define('VURL_STATE_BODY',     3);

/**
* vBulletin remote url class
*
* This class handles sending and returning data to remote urls via cURL and fsockopen
*
* @package 		vBulletin
* @version		$Revision: 59834 $
* @date 		$Date: 2012-03-01 14:23:09 -0800 (Thu, 01 Mar 2012) $
*
*/
class vB_vURL
{
	/**
	* vBulletin Registry Object
	*
	* @var	string
	*/
	var $registry = null;

	/**
	* Error code
	*
	* @var	int
	*/
	var $error = 0;

	/**
	* Options bitfield
	*
	* @var	integer
	*/
	var $bitoptions = 0;

	/**
	* List of headers by key
	*
	* @var	array
	*/
	var $headerkey = array();

	/**
	* Options Array
	*
	* @var	array
	*/
	var $options = array();

	/**
	* Transport Object Array
	*
	* @var	array
	*/
	var $classnames = array('cURL', 'fsockopen');

	/**
	* Transport Object Array
	*
	* @var	array
	*/
	var $transports = array();

	/**
	* Temporary filename for storing result
	*
	* @var	string
	*/
	var $tmpfile = null;

	/**
	 * Resets the class to initial settings
	 *
	 */
	function reset()
	{
		$this->bitoptions = 0;
		$this->headerkey = array();
		$this->error = 0;

		$this->options = array(
			VURL_TIMEOUT    => 15,
			VURL_POSTFIELDS => '',
			VURL_ENCODING   => '',
			VURL_USERAGENT  => '',
			VURL_URL        => '',
			VURL_HTTPHEADER => array(),
			VURL_MAXREDIRS  => 5,
			VURL_USERAGENT  => 'vBulletin via PHP',
			VURL_DIEONMAXSIZE => 1
		);

		foreach (array_keys($this->transports) AS $tname)
		{
			$transport =& $this->transports[$tname];
			$transport->reset();
		}

	}

	/**
	* Constructor
	*
	* @param	object	vBulletin Registry Object
	*/
	function vB_vURL(&$registry)
	{
		if (is_object($registry))
		{
			$this->registry =& $registry;
		}
		else
		{
			trigger_error('vB_vURL::Registry object is not an object', E_USER_ERROR);
		}

		// create the objects we need
		foreach ($this->classnames AS $classname)
		{
			$fullclass = 'vB_vURL_' . $classname;
			if (class_exists($fullclass, false))
			{
				$this->transports["$classname"] = new $fullclass($this);
			}
		}
		$this->reset();
	}

	/**
	* Destructor for PHP 5+, this deals with the case that
	* people forget to either unlink or move the file.
	*/
	function __destruct()
	{
		if (file_exists($this->tmpfile))
		{
			@unlink($this->tmpfile);
		}
	}

	/**
	* On/Off options
	*
	* @param		integer	one of the VURL_* defines
	* @param		mixed		option to set
	*
	*/
	function set_option($option, $extra)
	{
		switch ($option)
		{
			case VURL_POST:
			case VURL_HEADER:
			case VURL_NOBODY:
			case VURL_FOLLOWLOCATION:
			case VURL_RETURNTRANSFER:
			case VURL_CLOSECONNECTION:
			case VURL_VALIDSSLONLY:
				if ($extra == 1 OR $extra == true)
				{
					$this->bitoptions = $this->bitoptions | $option;
				}
				else
				{
					$this->bitoptions = $this->bitoptions & ~$option;
				}
				break;
			case VURL_TIMEOUT:
				if ($extra == 1 OR $extra == true)
				{
					$this->options[VURL_TIMEOUT] = intval($extra);
				}
				else
				{
					$this->options[VURL_TIMEOUT] = 15;
				}
				break;
			case VURL_POSTFIELDS:
				if ($extra == 1 OR $extra == true)
				{
					$this->options[VURL_POSTFIELDS] = $extra;
				}
				else
				{
					$this->options[VURL_POSTFIELDS] = '';
				}
				break;
			case VURL_ENCODING:
			case VURL_USERAGENT:
			case VURL_URL:
			case VURL_CUSTOMREQUEST:
				$this->options["$option"] = $extra;
				break;
			case VURL_HTTPHEADER:
				if (is_array($extra))
				{
					$this->headerkey = array();
					$this->options[VURL_HTTPHEADER] = $extra;
					foreach ($extra AS $line)
					{
						list($header, $value) = explode(': ', $line, 2);
						$this->headerkey[strtolower($header)] = $value;
					}
				}
				else
				{
					$this->options[VURL_HTTPHEADER] = array();
					$this->headerkey = array();
				}
				break;
			case VURL_MAXSIZE:
			case VURL_MAXREDIRS:
			case VURL_DIEONMAXSIZE:
				$this->options["$option"]	= intval($extra);
				break;
		}
	}

	/**
	* The do it all function
	*
	* @return	mixed		false on failure, array or string on success
	*/
	function exec()
	{
		$result = $this->exec2();

		if (is_array($result))
		{
			if (empty($result['body']) AND file_exists($result['body_file']))
			{
				$result['body'] = file_get_contents($result['body_file']);
				@unlink($result['body_file']);
			}
			if (!($this->bitoptions & VURL_HEADER))
			{
				return $result['body'];
			}
		}

		return $result;
	}

	/**
	* The function which formats the response array, removing what isn't required
	*
	* @param	array		response containing headers and body / body_file
	*
	* @return	mixed		true or array depending on response requested
	*/
	function format_response($response)
	{
		if ($this->bitoptions & VURL_RETURNTRANSFER)
		{
			if ($this->bitoptions & VURL_HEADER)
			{
				$response['headers'] = $this->build_headers($response['headers']);

				if ($this->bitoptions & VURL_NOBODY)
				{
					return $response['headers'];
				}
				else
				{
					return $response;
				}
			}
			else if ($this->bitoptions & VURL_NOBODY)
			{
				@unlink($response['body_file']);
				return true;
			}
			else
			{
				unset($response['headers']);
				return $response;
			}
		}
		else
		{
			@unlink($response['body_file']);
			return true;
		}
	}

	/**
	* new vURL method which stores items in a file if it can until needed
	*
	* @return	mixed		false on failure, true or array depending on response requested
	*/
	function exec2()
	{
		if ($this->registry->options['safeupload'])
		{
			$this->tmpfile = $this->registry->options['tmppath'] . '/vbupload' . $this->registry->userinfo['userid'] . substr(TIMENOW, -4);
		}
		else
		{
			$this->tmpfile = @tempnam(ini_get('upload_tmp_dir'), 'vbupload');
		}

		if (empty($this->options[VURL_URL]))
		{
			trigger_error('Must set URL with set_option(VURL_URL, $url)', E_USER_ERROR);
		}

		if ($this->options[VURL_USERAGENT])
		{
			$this->options[VURL_HTTPHEADER][] = 'User-Agent: ' . $this->options[VURL_USERAGENT];
		}
		if ($this->bitoptions & VURL_CLOSECONNECTION)
		{
			$this->options[VURL_HTTPHEADER][] = 'Connection: close';
		}

		foreach (array_keys($this->transports) AS $tname)
		{
			$transport =& $this->transports[$tname];
			if (($result = $transport->exec()) === VURL_HANDLED  AND !$this->fetch_error())
			{
				return $this->format_response(array('headers' => $transport->response_header, 'body' => $transport->response_text, 'body_file' => $this->tmpfile));
			}

			if ($this->fetch_error())
			{
				return false;
			}

		}

		@unlink($this->tmpfile);
		$this->set_error(VURL_ERROR_NOLIB);
		return false;
	}

	/**
	* Build the headers array
	*
	* @param		string	string of headers split by "\r\n"
	*
	* @return	array
	*/
	function build_headers($data)
	{
			$returnedheaders = explode("\r\n", $data);
			$headers = array();
			foreach ($returnedheaders AS $line)
			{
				list($header, $value) = explode(': ', $line, 2);
				if (preg_match('#^http/(1\.[012]) ([12345]\d\d) (.*)#i', $header, $httpmatches))
				{
					$headers['http-response']['version'] = $httpmatches[1];
					$headers['http-response']['statuscode'] = $httpmatches[2];
					$headers['http-response']['statustext'] = $httpmatches[3];
				}
				else if (!empty($header))
				{
					$headers[strtolower($header)] = $value;
				}
			}

			return $headers;
	}

	/**
	* Set Error
	*
	* @param		integer	Error Code
	*
	*/
	function set_error($errorcode)
	{
		$this->error = $errorcode;
	}

	/**
	* Return Error
	*
	* @return	integer
	*/
	function fetch_error()
	{
		return $this->error;
	}

	/**
	 * Does a HTTP HEAD Request
	 *
	 * @param	string	The URL to do the head request on
	 *
	 * @return	mixed	False on Failure, Array or String on Success
	 *
	 */
	function fetch_head($url)
	{
		$this->reset();
		$this->set_option(VURL_URL, $url);
		$this->set_option(VURL_RETURNTRANSFER, true);
		$this->set_option(VURL_HEADER, true);
		$this->set_option(VURL_NOBODY, true);
		$this->set_option(VURL_CUSTOMREQUEST, 'HEAD');
		$this->set_option(VURL_CLOSECONNECTION, 1);
		return $this->exec();
	}

	/**
	 * Does a HTTP Request, returning the body of the document
	 *
	 * @param	string	The URL
	 * @param	integer	The Maximum Size to get
	 * @param	boolean	Die when we reach the maximum Size?
	 * @param	boolean	Also Get headers?
	 *
	 * @return	mixed	False on Failure, Array or String on Success
	 *
	 */
	function fetch_body($url, $maxsize, $dieonmaxsize, $returnheaders)
	{
		$this->reset();
		$this->set_option(VURL_URL, $url);
		$this->set_option(VURL_RETURNTRANSFER, true);
		if (intval($maxsize))
		{
			$this->set_option(VURL_MAXSIZE, $maxsize);
		}
		if ($returnheaders)
		{
			$this->set_option(VURL_HEADER, true);
		}
		if (!$dieonmaxsize)
		{
			$this->set_option(VURL_DIEONMAXSIZE, false);
		}
		return $this->exec();
	}
}

class vB_vURL_cURL
{
	/**
	* String that holds the cURL callback data
	*
	* @var	string
	*/
	var $response_text = '';

	/**
	* String that holds the cURL callback data
	*
	* @var	string
	*/
	var $response_header = '';

	/**
	* cURL Handler
	*
	* @var	resource
	*/
	var $ch = null;

	/**
	* vB_vURL object
	*
	* @var	object
	*/
	var $vurl = null;

	/**
	* Filepointer to the temporary file
	*
	* @var	resource
	*/
	var $fp = null;

	/**
	* Length of the current response
	*
	* @var	integer
	*/
	var $response_length = 0;

	/**
	* Private variable when we request headers. Values are one of VURL_STATE_* constants.
	*
	* @var	int
	*/
	var $__finished_headers = VURL_STATE_HEADERS;

	/**
	* If the current result is when the max limit is reached
	*
	* @var	integer
	*/
	var $max_limit_reached = false;

	/**
	* Constructor
	*
	* @param	object	Instance of a vB_vURL Object
	*/
	function vB_vURL_cURL(&$vurl_registry)
	{
		if (!is_a($vurl_registry, 'vB_vURL'))
		{
			trigger_error('Direct Instantiation of ' . __CLASS__ . ' prohibited.', E_USER_ERROR);
		}
		$this->vurl =& $vurl_registry;
	}

	/**
	* Callback for handling headers
	*
	* @param	resource	cURL object
	* @param	string		Request
	*
	* @return	integer		length of the request
	*/
	function curl_callback_header(&$ch, $string)
	{
		if (trim($string) !== '')
		{
			$this->response_header .= $string;
		}
		return strlen($string);
	}

	/**
	* Callback for handling the request body
	*
	* @param	resource	cURL object
	* @param	string		Request
	*
	* @return	integer		length of the request
	*/
	function curl_callback_response(&$ch, $response)
	{
		$chunk_length = strlen($response);

		/* We receive both headers + body */
		if ($this->vurl->bitoptions & VURL_HEADER)
		{
			if ($this->__finished_headers != VURL_STATE_BODY)
			{
				if ($this->vurl->bitoptions & VURL_FOLLOWLOCATION AND preg_match('#(?<=\r\n|^)Location:#i', $response))
				{
					$this->__finished_headers = VURL_STATE_LOCATION;
				}

				if ($response === "\r\n")
				{
					if ($this->__finished_headers == VURL_STATE_LOCATION)
					{
						// found a location -- still following it; reset the headers so they only match the new request
						$this->response_header = '';
						$this->__finished_headers = VURL_STATE_HEADERS;
					}
					else
					{
						// no location -- we're done
						$this->__finished_headers = VURL_STATE_BODY;
					}
				}

				return $chunk_length;
			}
		}

		// no filepointer and we're using or about to use more than 100k
		if (!$this->fp AND $this->response_length + $chunk_length >= 1024*100)
		{
			if ($this->fp = @fopen($this->vurl->tmpfile, 'wb'))
			{
				fwrite($this->fp, $this->response_text);
				unset($this->response_text);
			}
		}

		if ($this->fp AND $response)
		{
			fwrite($this->fp, $response);
		}
		else
		{
			$this->response_text .= $response;

		}

		$this->response_length += $chunk_length;

		if ($this->vurl->options[VURL_MAXSIZE] AND $this->response_length > $this->vurl->options[VURL_MAXSIZE])
		{
			$this->max_limit_reached = true;
			$this->vurl->set_error(VURL_ERROR_MAXSIZE);
			return false;
		}

		return $chunk_length;
	}

	/**
	* Clears all previous request info
	*/
	function reset()
	{
		$this->response_text = '';
		$this->response_header = '';
		$this->response_length = 0;
		$this->__finished_headers = VURL_STATE_HEADERS;
		$this->max_limit_reached = false;
	}

	/**
	* Performs fetching of the file if possible
	*
	* @return	integer		Returns one of two constants, VURL_NEXT or VURL_HANDLED
	*/
	function exec()
	{
		$urlinfo = @parse_url($this->vurl->options[VURL_URL]);
		if (empty($urlinfo['port']))
		{
			if ($urlinfo['scheme'] == 'https')
			{
				$urlinfo['port'] = 443;
			}
			else
			{
				$urlinfo['port'] = 80;
			}
		}

		if (!function_exists('curl_init') OR ($this->ch = curl_init()) === false)
		{
			return VURL_NEXT;
		}

		if ($urlinfo['scheme'] == 'https')
		{
			// curl_version crashes if no zlib support in cURL (php <= 5.2.5)
			$curlinfo = curl_version();
			if (empty($curlinfo['ssl_version']))
			{
				curl_close($this->ch);
				return VURL_NEXT;
			}
		}

		curl_setopt($this->ch, CURLOPT_URL, $this->vurl->options[VURL_URL]);
		curl_setopt($this->ch, CURLOPT_TIMEOUT, $this->vurl->options[VURL_TIMEOUT]);
		if ($this->vurl->options[VURL_CUSTOMREQUEST])
		{
			curl_setopt($this->ch, CURLOPT_CUSTOMREQUEST, $this->vurl->options[VURL_CUSTOMREQUEST]);
		}
		else if ($this->vurl->bitoptions & VURL_POST)
		{
			curl_setopt($this->ch, CURLOPT_POST, 1);
			curl_setopt($this->ch, CURLOPT_POSTFIELDS, $this->vurl->options[VURL_POSTFIELDS]);
		}
		else
		{
			curl_setopt($this->ch, CURLOPT_POST, 0);
		}
		curl_setopt($this->ch, CURLOPT_HEADER, ($this->vurl->bitoptions & VURL_HEADER) ? 1 : 0);
		curl_setopt($this->ch, CURLOPT_HTTPHEADER, $this->vurl->options[VURL_HTTPHEADER]);
		curl_setopt($this->ch, CURLOPT_RETURNTRANSFER, ($this->vurl->bitoptions & VURL_RETURNTRANSFER) ? 1 : 0);
		if ($this->vurl->bitoptions & VURL_NOBODY)
		{
			curl_setopt($this->ch, CURLOPT_NOBODY, 1);
		}

		if ($this->vurl->bitoptions & VURL_FOLLOWLOCATION)
		{
			if (@curl_setopt($this->ch, CURLOPT_FOLLOWLOCATION, 1) === false) // disabled in safe_mode/open_basedir in PHP 5.1.6/4.4.4
			{
				curl_close($this->ch);
				return VURL_NEXT;
			}
			curl_setopt($this->ch, CURLOPT_MAXREDIRS, $this->vurl->options[VURL_MAXREDIRS]);
		}
		else
		{
			curl_setopt($this->ch, CURLOPT_FOLLOWLOCATION, 0);
		}

		if ($this->vurl->options[VURL_ENCODING])
		{
			@curl_setopt($this->ch, CURLOPT_ENCODING, $this->vurl->options[VURL_ENCODING]); // this will work on versions of cURL after 7.10, though was broken on PHP 4.3.6/Win32
		}

		$this->reset();

		curl_setopt($this->ch, CURLOPT_WRITEFUNCTION, array(&$this, 'curl_callback_response'));
		curl_setopt($this->ch, CURLOPT_HEADERFUNCTION, array(&$this, 'curl_callback_header'));

		if (!($this->vurl->bitoptions & VURL_VALIDSSLONLY))
		{
			curl_setopt($this->ch, CURLOPT_SSL_VERIFYPEER, 0);
			curl_setopt($this->ch, CURLOPT_SSL_VERIFYHOST, 0);
		}

		$result = curl_exec($this->ch);

		if ($urlinfo['scheme'] == 'https' AND $result === false AND curl_errno($this->ch) == '60') ## CURLE_SSL_CACERT problem with the CA cert (path? access rights?)
		{
			curl_setopt($this->ch, CURLOPT_CAINFO, DIR . '/includes/paymentapi/ca-bundle.crt');
			$result = curl_exec($this->ch);
		}

		curl_close($this->ch);
		if ($this->fp)
		{
			fclose($this->fp);
			$this->fp = null;
		}

		if ($result !== false OR (!$this->vurl->options[VURL_DIEONMAXSIZE] AND $this->max_limit_reached))
		{
			return VURL_HANDLED;
		}
		return VURL_NEXT;
	}
}

class vB_vURL_fsockopen
{
	/**
	* String that holds the cURL callback data
	*
	* @var	string
	*/
	var $response_text = '';

	/**
	* String that holds the cURL callback data
	*
	* @var	string
	*/
	var $response_header = '';

	/**
	* vB_vURL object
	*
	* @var	object
	*/
	var $vurl = null;

	/**
	* Filepointer to the temporary file
	*
	* @var	resource
	*/
	var $fp = null;

	/**
	* Length of the current response
	*
	* @var	integer
	*/
	var $response_length = 0;

	/**
	* If the current result is when the max limit is reached
	*
	* @var	integer
	*/
	var $max_limit_reached = false;

	/**
	* Constructor
	*
	* @param	object	Instance of a vB_vURL Object
	*/
	function vB_vURL_fsockopen(&$vurl_registry)
	{
		if (!is_a($vurl_registry, 'vB_vURL'))
		{
			trigger_error('Direct Instantiation of ' . __CLASS__ . ' prohibited.', E_USER_ERROR);
		}
		$this->vurl =& $vurl_registry;
	}

	/**
	* Clears all previous request info
	*/
	function reset()
	{
		$this->response_text = '';
		$this->response_header = '';
		$this->response_length = 0;
		$this->max_limit_reached = false;
	}

	/**
	* Inflates the response if its gzip or deflate
	*/
	function inflate_response($type)
	{
		if (!empty($this->response_text))
		{
			switch($type)
			{
				case 'gzip':
					if ($this->response_text[0] == "\x1F" AND $this->response_text[1] == "\x8b")
					{
						if ($inflated = @gzinflate(substr($this->response_text, 10)))
						{
							$this->response_text = $inflated;
						}
					}
				break;
				case 'deflate':

					if ($this->response_text[0] == "\x78" AND $this->response_text[1] == "\x9C" AND $inflated = @gzinflate(substr($this->response_text, 2)))
					{
						$this->response_text = $inflated;
					}
					else if ($inflated = @gzinflate($this->response_text))
					{
						$this->response_text = $inflated;
					}
				break;
			}
		}
		else
		{
			$compressed_file = $this->vurl->tmpfile;
			if ($gzfp = @gzopen($compressed_file, 'r'))
			{
				if ($newfp = @fopen($this->vurl->tmpfile . 'u', 'w'))
				{
					$this->vurl->tmpfile = $this->vurl->tmpfile . 'u';
					if (function_exists('stream_copy_to_stream'))
					{
						stream_copy_to_stream($gzfp, $newfp);
					}
					else
					{
						while(!gzeof($gzfp))
						{
							fwrite($fp, gzread($gzfp, 20480));
						}
					}

					fclose($newfp);
				}

				fclose($gzfp);
				@unlink($compressed_file);
			}
		}
	}

	/**
	* Callback for handling the request body
	*
	* @param	string		Request
	*
	* @return	integer		length of the request
	*/
	function callback_response($response)
	{
		$chunk_length = strlen($response);

		// no filepointer and we're using or about to use more than 100k
		if (!$this->fp AND $this->response_length + $chunk_length >= 1024*100)
		{
			if ($this->fp = @fopen($this->vurl->tmpfile, 'wb'))
			{
				fwrite($this->fp, $this->response_text);
				unset($this->response_text);
			}
		}

		if ($response)
		{
			if ($this->fp)
			{
				fwrite($this->fp, $response);
			}
			else
			{
				$this->response_text .= $response;

			}
		}

		$this->response_length += $chunk_length;

		if ($this->vurl->options[VURL_MAXSIZE] AND $this->response_length > $this->vurl->options[VURL_MAXSIZE])
		{
			$this->max_limit_reached = true;
			$this->vurl->set_error(VURL_ERROR_MAXSIZE);
			return false;
		}

		return $chunk_length;
	}

	/**
	* Performs fetching of the file if possible
	*
	* @return	integer		Returns one of two constants, VURL_NEXT or VURL_HANDLED
	*/
	function exec()
	{
		static $location_following_count = 0;

		$urlinfo = @parse_url($this->vurl->options[VURL_URL]);
		if (empty($urlinfo['port']))
		{
			if ($urlinfo['scheme'] == 'https')
			{
				$urlinfo['port'] = 443;
			}
			else
			{
				$urlinfo['port'] = 80;
			}
		}

		if (empty($urlinfo['path']))
		{
			$urlinfo['path'] = '/';
		}

		if ($urlinfo['scheme'] == 'https')
		{
			if (!function_exists('openssl_open'))
			{
				$this->vurl->set_error(VURL_ERROR_SSL);
				return VURL_NEXT;
			}
			$scheme = 'ssl://';
		}

		if ($request_resource = @fsockopen($scheme . $urlinfo['host'], $urlinfo['port'], $errno, $errstr, $this->vurl->options[VURL_TIMEOUT]))
		{
			$headers = array();
			if ($this->vurl->bitoptions & VURL_NOBODY)
			{
				$this->vurl->options[VURL_CUSTOMREQUEST] = 'HEAD';
			}
			if ($this->vurl->options[VURL_CUSTOMREQUEST])
			{
				$headers[] = $this->vurl->options[VURL_CUSTOMREQUEST] . " $urlinfo[path]" . ($urlinfo['query'] ? "?$urlinfo[query]" : '') . " HTTP/1.0";
			}
			else if ($this->vurl->bitoptions & VURL_POST)
			{
				$headers[] = "POST $urlinfo[path]" . ($urlinfo['query'] ? "?$urlinfo[query]" : '') . " HTTP/1.0";
				if (empty($this->vurl->headerkey['content-type']))
				{
					$headers[] = 'Content-Type: application/x-www-form-urlencoded';
				}
				if (empty($this->vurl->headerkey['content-length']))
				{
					$headers[] = 'Content-Length: ' . strlen($this->vurl->options[VURL_POSTFIELDS]);
				}
			}
			else
			{
				$headers[] = "GET $urlinfo[path]" . ($urlinfo['query'] ? "?$urlinfo[query]" : '') . " HTTP/1.0";
			}
			$headers[] = "Host: $urlinfo[host]";
			if (!empty($this->vurl->options[VURL_HTTPHEADER]))
			{
				$headers = array_merge($headers, $this->vurl->options[VURL_HTTPHEADER]);
			}
			if ($this->vurl->options[VURL_ENCODING])
			{
				$encodemethods = explode(',', $this->vurl->options[VURL_ENCODING]);
				$finalmethods = array();
				foreach ($encodemethods AS $type)
				{
					$type = strtolower(trim($type));
					if ($type == 'gzip' AND function_exists('gzinflate'))
					{
						$finalmethods[] = 'gzip';
					}
					else if ($type == 'deflate' AND function_exists('gzinflate'))
					{
						$finalmethods[] = 'deflate';
					}
					else
					{
						$finalmethods[] = $type;
					}
				}

				if (!empty($finalmethods))
				{
					$headers[] = "Accept-Encoding: " . implode(', ', $finalmethods);
				}
			}

			$output = implode("\r\n", $headers) . "\r\n\r\n";
			if ($this->vurl->bitoptions & VURL_POST)
			{
				$output .= $this->vurl->options[VURL_POSTFIELDS];
			}

			$result = false;

			if (fputs($request_resource, $output, strlen($output)))
			{
				stream_set_timeout($request_resource, $this->vurl->options[VURL_TIMEOUT]);
				$in_header = true;
				$result = true;

				while (!feof($request_resource))
				{
					$response = @fread($request_resource, 2048);

					if ($in_header)
					{
						$header_end_position = strpos($response, "\r\n\r\n");

						if ($header_end_position === false)
						{
							$this->response_header .= $response;
						}
						else
						{
							$this->response_header .= substr($response, 0, $header_end_position);
							$in_header = false;
							$response = substr($response, $header_end_position + 4);
						}
					}

					if ($this->callback_response($response) != strlen($response))
					{
						$result = false;
						break;
					}
				}
				fclose($request_resource);
			}

			if ($this->fp)
			{
				fclose($this->fp);
				$this->fp = null;
			}

			if ($result !== false OR (!$this->vurl->options[VURL_DIEONMAXSIZE] AND $this->max_limit_reached))
			{
				if ($this->vurl->bitoptions & VURL_FOLLOWLOCATION AND preg_match("#\r\nLocation: (.*)(\r\n|$)#siU", $this->response_header, $location) AND $location_following_count < $this->vurl->options[VURL_MAXREDIRS])
				{
					$location_following_count++;
					$this->vurl->set_option(VURL_URL, trim($location[1]));
					$this->reset();
					return $this->exec();
				}

				// need to handle gzip if it was used
				if (function_exists('gzinflate'))
				{
					if (stristr($this->response_header, "Content-encoding: gzip\r\n") !== false)
					{
						$this->inflate_response('gzip');
					}
					else if (stristr($this->response_header, "Content-encoding: deflate\r\n") !== false)
					{
						$this->inflate_response('deflate');
					}
				}

				return VURL_HANDLED;
			}
		}
		return VURL_NEXT;
	}

}

/*======================================================================*\
|| ####################################################################
|| # 
|| # CVS: $RCSfile$ - $Revision: 59834 $
|| ####################################################################
\*======================================================================*/
?>
