<?php



if (!defined('W3TC')) {

    die();

}



/**

* transport class for sending/receiving data via HTTP and HTTPS

* NOTE: PHP must be compiled with the CURL extension for HTTPS support

*

* @author   Dietrich Ayala <dietrich@ganx4.com>

* @author   Scott Nichol <snichol@users.sourceforge.net>

* @version  $Id: class.soap_transport_http.php,v 1.68 2010/04/26 20:15:08 snichol Exp $

* @access public

*/

class soap_transport_http extends nusoap_base {



	var $url = '';

	var $uri = '';

	var $digest_uri = '';

	var $scheme = '';

	var $host = '';

	var $port = '';

	var $path = '';

	var $request_method = 'POST';

	var $protocol_version = '1.0';

	var $encoding = '';

	var $outgoing_headers = array();

	var $incoming_headers = array();

	var $incoming_cookies = array();

	var $outgoing_payload = '';

	var $incoming_payload = '';

	var $response_status_line;	// HTTP response status line

	var $useSOAPAction = true;

	var $persistentConnection = false;

	var $ch = false;	// cURL handle

	var $ch_options = array();	// cURL custom options

	var $use_curl = false;		// force cURL use

	var $proxy = null;			// proxy information (associative array)

	var $username = '';

	var $password = '';

	var $authtype = '';

	var $digestRequest = array();

	var $certRequest = array();	// keys must be cainfofile (optional), sslcertfile, sslkeyfile, passphrase, certpassword (optional), verifypeer (optional), verifyhost (optional)

								// cainfofile: certificate authority file, e.g. '$pathToPemFiles/rootca.pem'

								// sslcertfile: SSL certificate file, e.g. '$pathToPemFiles/mycert.pem'

								// sslkeyfile: SSL key file, e.g. '$pathToPemFiles/mykey.pem'

								// passphrase: SSL key password/passphrase

								// certpassword: SSL certificate password

								// verifypeer: default is 1

								// verifyhost: default is 1



	/**

	* constructor

	*

	* @param string $url The URL to which to connect

	* @param array $curl_options User-specified cURL options

	* @param boolean $use_curl Whether to try to force cURL use

	* @access public

	*/

	function soap_transport_http($url, $curl_options = NULL, $use_curl = false){

		parent::nusoap_base();

		$this->debug("ctor url=$url use_curl=$use_curl curl_options:");

		$this->appendDebug($this->varDump($curl_options));

		$this->setURL($url);

		if (is_array($curl_options)) {

			$this->ch_options = $curl_options;

		}

		$this->use_curl = $use_curl;

		preg_match('/\$Revisio' . 'n: ([^ ]+)/', $this->revision, $rev);

		$this->setHeader('User-Agent', $this->title.'/'.$this->version.' ('.$rev[1].')');

	}



	/**

	* sets a cURL option

	*

	* @param	mixed $option The cURL option (always integer?)

	* @param	mixed $value The cURL option value

	* @access   private

	*/

	function setCurlOption($option, $value) {

		$this->debug("setCurlOption option=$option, value=");

		$this->appendDebug($this->varDump($value));

		curl_setopt($this->ch, $option, $value);

	}



	/**

	* sets an HTTP header

	*

	* @param string $name The name of the header

	* @param string $value The value of the header

	* @access private

	*/

	function setHeader($name, $value) {

		$this->outgoing_headers[$name] = $value;

		$this->debug("set header $name: $value");

	}



	/**

	* unsets an HTTP header

	*

	* @param string $name The name of the header

	* @access private

	*/

	function unsetHeader($name) {

		if (isset($this->outgoing_headers[$name])) {

			$this->debug("unset header $name");

			unset($this->outgoing_headers[$name]);

		}

	}



	/**

	* sets the URL to which to connect

	*

	* @param string $url The URL to which to connect

	* @access private

	*/

	function setURL($url) {

		$this->url = $url;



		$u = parse_url($url);

		foreach($u as $k => $v){

			$this->debug("parsed URL $k = $v");

			$this->$k = $v;

		}



		// add any GET params to path

		if(isset($u['query']) && $u['query'] != ''){

            $this->path .= '?' . $u['query'];

		}



		// set default port

		if(!isset($u['port'])){

			if($u['scheme'] == 'https'){

				$this->port = 443;

			} else {

				$this->port = 80;

			}

		}



		$this->uri = $this->path;

		$this->digest_uri = $this->uri;



		// build headers

		if (!isset($u['port'])) {

			$this->setHeader('Host', $this->host);

		} else {

			$this->setHeader('Host', $this->host.':'.$this->port);

		}



		if (isset($u['user']) && $u['user'] != '') {

			$this->setCredentials(urldecode($u['user']), isset($u['pass']) ? urldecode($u['pass']) : '');

		}

	}



	/**

	* gets the I/O method to use

	*

	* @return	string	I/O method to use (socket|curl|unknown)

	* @access	private

	*/

	function io_method() {

		if ($this->use_curl || ($this->scheme == 'https') || ($this->scheme == 'http' && $this->authtype == 'ntlm') || ($this->scheme == 'http' && is_array($this->proxy) && $this->proxy['authtype'] == 'ntlm'))

			return 'curl';

		if (($this->scheme == 'http' || $this->scheme == 'ssl') && $this->authtype != 'ntlm' && (!is_array($this->proxy) || $this->proxy['authtype'] != 'ntlm'))

			return 'socket';

		return 'unknown';

	}



	/**

	* establish an HTTP connection

	*

	* @param    integer $timeout set connection timeout in seconds

	* @param	integer $response_timeout set response timeout in seconds

	* @return	boolean true if connected, false if not

	* @access   private

	*/

	function connect($connection_timeout=0,$response_timeout=30){

	  	// For PHP 4.3 with OpenSSL, change https scheme to ssl, then treat like

	  	// "regular" socket.

	  	// TODO: disabled for now because OpenSSL must be *compiled* in (not just

	  	//       loaded), and until PHP5 stream_get_wrappers is not available.

//	  	if ($this->scheme == 'https') {

//		  	if (version_compare(phpversion(), '4.3.0') >= 0) {

//		  		if (extension_loaded('openssl')) {

//		  			$this->scheme = 'ssl';

//		  			$this->debug('Using SSL over OpenSSL');

//		  		}

//		  	}

//		}

		$this->debug("connect connection_timeout $connection_timeout, response_timeout $response_timeout, scheme $this->scheme, host $this->host, port $this->port");

	  if ($this->io_method() == 'socket') {

		if (!is_array($this->proxy)) {

			$host = $this->host;

			$port = $this->port;

		} else {

			$host = $this->proxy['host'];

			$port = $this->proxy['port'];

		}



		// use persistent connection

		if($this->persistentConnection && isset($this->fp) && is_resource($this->fp)){

			if (!feof($this->fp)) {

				$this->debug('Re-use persistent connection');

				return true;

			}

			fclose($this->fp);

			$this->debug('Closed persistent connection at EOF');

		}



		// munge host if using OpenSSL

		if ($this->scheme == 'ssl') {

			$host = 'ssl://' . $host;

		}

		$this->debug('calling fsockopen with host ' . $host . ' connection_timeout ' . $connection_timeout);



		// open socket

		if($connection_timeout > 0){

			$this->fp = @fsockopen( $host, $this->port, $this->errno, $this->error_str, $connection_timeout);

		} else {

			$this->fp = @fsockopen( $host, $this->port, $this->errno, $this->error_str);

		}



		// test pointer

		if(!$this->fp) {

			$msg = 'Couldn\'t open socket connection to server ' . $this->url;

			if ($this->errno) {

				$msg .= ', Error ('.$this->errno.'): '.$this->error_str;

			} else {

				$msg .= ' prior to connect().  This is often a problem looking up the host name.';

			}

			$this->debug($msg);

			$this->setError($msg);

			return false;

		}



		// set response timeout

		$this->debug('set response timeout to ' . $response_timeout);

		socket_set_timeout( $this->fp, $response_timeout);



		$this->debug('socket connected');

		return true;

	  } else if ($this->io_method() == 'curl') {

		if (!extension_loaded('curl')) {

//			$this->setError('cURL Extension, or OpenSSL extension w/ PHP version >= 4.3 is required for HTTPS');

			$this->setError('The PHP cURL Extension is required for HTTPS or NLTM.  You will need to re-build or update your PHP to include cURL or change php.ini to load the PHP cURL extension.');

			return false;

		}

		// Avoid warnings when PHP does not have these options

		if (defined('CURLOPT_CONNECTIONTIMEOUT'))

			$CURLOPT_CONNECTIONTIMEOUT = CURLOPT_CONNECTIONTIMEOUT;

		else

			$CURLOPT_CONNECTIONTIMEOUT = 78;

		if (defined('CURLOPT_HTTPAUTH'))

			$CURLOPT_HTTPAUTH = CURLOPT_HTTPAUTH;

		else

			$CURLOPT_HTTPAUTH = 107;

		if (defined('CURLOPT_PROXYAUTH'))

			$CURLOPT_PROXYAUTH = CURLOPT_PROXYAUTH;

		else

			$CURLOPT_PROXYAUTH = 111;

		if (defined('CURLAUTH_BASIC'))

			$CURLAUTH_BASIC = CURLAUTH_BASIC;

		else

			$CURLAUTH_BASIC = 1;

		if (defined('CURLAUTH_DIGEST'))

			$CURLAUTH_DIGEST = CURLAUTH_DIGEST;

		else

			$CURLAUTH_DIGEST = 2;

		if (defined('CURLAUTH_NTLM'))

			$CURLAUTH_NTLM = CURLAUTH_NTLM;

		else

			$CURLAUTH_NTLM = 8;



		$this->debug('connect using cURL');

		// init CURL

		$this->ch = curl_init();

		// set url

		$hostURL = ($this->port != '') ? "$this->scheme://$this->host:$this->port" : "$this->scheme://$this->host";

		// add path

		$hostURL .= $this->path;

		$this->setCurlOption(CURLOPT_URL, $hostURL);

		// follow location headers (re-directs)

		if (ini_get('safe_mode') || ini_get('open_basedir')) {

			$this->debug('safe_mode or open_basedir set, so do not set CURLOPT_FOLLOWLOCATION');

			$this->debug('safe_mode = ');

			$this->appendDebug($this->varDump(ini_get('safe_mode')));

			$this->debug('open_basedir = ');

			$this->appendDebug($this->varDump(ini_get('open_basedir')));

		} else {

			$this->setCurlOption(CURLOPT_FOLLOWLOCATION, 1);

		}

		// ask for headers in the response output

		$this->setCurlOption(CURLOPT_HEADER, 1);

		// ask for the response output as the return value

		$this->setCurlOption(CURLOPT_RETURNTRANSFER, 1);

		// encode

		// We manage this ourselves through headers and encoding

//		if(function_exists('gzuncompress')){

//			$this->setCurlOption(CURLOPT_ENCODING, 'deflate');

//		}

		// persistent connection

		if ($this->persistentConnection) {

			// I believe the following comment is now bogus, having applied to

			// the code when it used CURLOPT_CUSTOMREQUEST to send the request.

			// The way we send data, we cannot use persistent connections, since

			// there will be some "junk" at the end of our request.

			//$this->setCurlOption(CURL_HTTP_VERSION_1_1, true);

			$this->persistentConnection = false;

			$this->setHeader('Connection', 'close');

		}

		// set timeouts

		if ($connection_timeout != 0) {

			$this->setCurlOption($CURLOPT_CONNECTIONTIMEOUT, $connection_timeout);

		}

		if ($response_timeout != 0) {

			$this->setCurlOption(CURLOPT_TIMEOUT, $response_timeout);

		}



		if ($this->scheme == 'https') {

			$this->debug('set cURL SSL verify options');

			// recent versions of cURL turn on peer/host checking by default,

			// while PHP binaries are not compiled with a default location for the

			// CA cert bundle, so disable peer/host checking.

			//$this->setCurlOption(CURLOPT_CAINFO, 'f:\php-4.3.2-win32\extensions\curl-ca-bundle.crt');

			$this->setCurlOption(CURLOPT_SSL_VERIFYPEER, 0);

			$this->setCurlOption(CURLOPT_SSL_VERIFYHOST, 0);



			// support client certificates (thanks Tobias Boes, Doug Anarino, Eryan Ariobowo)

			if ($this->authtype == 'certificate') {

				$this->debug('set cURL certificate options');

				if (isset($this->certRequest['cainfofile'])) {

					$this->setCurlOption(CURLOPT_CAINFO, $this->certRequest['cainfofile']);

				}

				if (isset($this->certRequest['verifypeer'])) {

					$this->setCurlOption(CURLOPT_SSL_VERIFYPEER, $this->certRequest['verifypeer']);

				} else {

					$this->setCurlOption(CURLOPT_SSL_VERIFYPEER, 1);

				}

				if (isset($this->certRequest['verifyhost'])) {

					$this->setCurlOption(CURLOPT_SSL_VERIFYHOST, $this->certRequest['verifyhost']);

				} else {

					$this->setCurlOption(CURLOPT_SSL_VERIFYHOST, 1);

				}

				if (isset($this->certRequest['sslcertfile'])) {

					$this->setCurlOption(CURLOPT_SSLCERT, $this->certRequest['sslcertfile']);

				}

				if (isset($this->certRequest['sslkeyfile'])) {

					$this->setCurlOption(CURLOPT_SSLKEY, $this->certRequest['sslkeyfile']);

				}

				if (isset($this->certRequest['passphrase'])) {

					$this->setCurlOption(CURLOPT_SSLKEYPASSWD, $this->certRequest['passphrase']);

				}

				if (isset($this->certRequest['certpassword'])) {

					$this->setCurlOption(CURLOPT_SSLCERTPASSWD, $this->certRequest['certpassword']);

				}

			}

		}

		if ($this->authtype && ($this->authtype != 'certificate')) {

			if ($this->username) {

				$this->debug('set cURL username/password');

				$this->setCurlOption(CURLOPT_USERPWD, "$this->username:$this->password");

			}

			if ($this->authtype == 'basic') {

				$this->debug('set cURL for Basic authentication');

				$this->setCurlOption($CURLOPT_HTTPAUTH, $CURLAUTH_BASIC);

			}

			if ($this->authtype == 'digest') {

				$this->debug('set cURL for digest authentication');

				$this->setCurlOption($CURLOPT_HTTPAUTH, $CURLAUTH_DIGEST);

			}

			if ($this->authtype == 'ntlm') {

				$this->debug('set cURL for NTLM authentication');

				$this->setCurlOption($CURLOPT_HTTPAUTH, $CURLAUTH_NTLM);

			}

		}

		if (is_array($this->proxy)) {

			$this->debug('set cURL proxy options');

			if ($this->proxy['port'] != '') {

				$this->setCurlOption(CURLOPT_PROXY, $this->proxy['host'].':'.$this->proxy['port']);

			} else {

				$this->setCurlOption(CURLOPT_PROXY, $this->proxy['host']);

			}

			if ($this->proxy['username'] || $this->proxy['password']) {

				$this->debug('set cURL proxy authentication options');

				$this->setCurlOption(CURLOPT_PROXYUSERPWD, $this->proxy['username'].':'.$this->proxy['password']);

				if ($this->proxy['authtype'] == 'basic') {

					$this->setCurlOption($CURLOPT_PROXYAUTH, $CURLAUTH_BASIC);

				}

				if ($this->proxy['authtype'] == 'ntlm') {

					$this->setCurlOption($CURLOPT_PROXYAUTH, $CURLAUTH_NTLM);

				}

			}

		}

		$this->debug('cURL connection set up');

		return true;

	  } else {

		$this->setError('Unknown scheme ' . $this->scheme);

		$this->debug('Unknown scheme ' . $this->scheme);

		return false;

	  }

	}



	/**

	* sends the SOAP request and gets the SOAP response via HTTP[S]

	*

	* @param    string $data message data

	* @param    integer $timeout set connection timeout in seconds

	* @param	integer $response_timeout set response timeout in seconds

	* @param	array $cookies cookies to send

	* @return	string data

	* @access   public

	*/

	function send($data, $timeout=0, $response_timeout=30, $cookies=NULL) {



		$this->debug('entered send() with data of length: '.strlen($data));



		$this->tryagain = true;

		$tries = 0;

		while ($this->tryagain) {

			$this->tryagain = false;

			if ($tries++ < 2) {

				// make connnection

				if (!$this->connect($timeout, $response_timeout)){

					return false;

				}



				// send request

				if (!$this->sendRequest($data, $cookies)){

					return false;

				}



				// get response

				$respdata = $this->getResponse();

			} else {

				$this->setError("Too many tries to get an OK response ($this->response_status_line)");

			}

		}

		$this->debug('end of send()');

		return $respdata;

	}





	/**

	* sends the SOAP request and gets the SOAP response via HTTPS using CURL

	*

	* @param    string $data message data

	* @param    integer $timeout set connection timeout in seconds

	* @param	integer $response_timeout set response timeout in seconds

	* @param	array $cookies cookies to send

	* @return	string data

	* @access   public

	* @deprecated

	*/

	function sendHTTPS($data, $timeout=0, $response_timeout=30, $cookies) {

		return $this->send($data, $timeout, $response_timeout, $cookies);

	}



	/**

	* if authenticating, set user credentials here

	*

	* @param    string $username

	* @param    string $password

	* @param	string $authtype (basic|digest|certificate|ntlm)

	* @param	array $digestRequest (keys must be nonce, nc, realm, qop)

	* @param	array $certRequest (keys must be cainfofile (optional), sslcertfile, sslkeyfile, passphrase, certpassword (optional), verifypeer (optional), verifyhost (optional): see corresponding options in cURL docs)

	* @access   public

	*/

	function setCredentials($username, $password, $authtype = 'basic', $digestRequest = array(), $certRequest = array()) {

		$this->debug("setCredentials username=$username authtype=$authtype digestRequest=");

		$this->appendDebug($this->varDump($digestRequest));

		$this->debug("certRequest=");

		$this->appendDebug($this->varDump($certRequest));

		// cf. RFC 2617

		if ($authtype == 'basic') {

			$this->setHeader('Authorization', 'Basic '.base64_encode(str_replace(':','',$username).':'.$password));

		} elseif ($authtype == 'digest') {

			if (isset($digestRequest['nonce'])) {

				$digestRequest['nc'] = isset($digestRequest['nc']) ? $digestRequest['nc']++ : 1;



				// calculate the Digest hashes (calculate code based on digest implementation found at: http://www.rassoc.com/gregr/weblog/stories/2002/07/09/webServicesSecurityHttpDigestAuthenticationWithoutActiveDirectory.html)



				// A1 = unq(username-value) ":" unq(realm-value) ":" passwd

				$A1 = $username. ':' . (isset($digestRequest['realm']) ? $digestRequest['realm'] : '') . ':' . $password;



				// H(A1) = MD5(A1)

				$HA1 = md5($A1);



				// A2 = Method ":" digest-uri-value

				$A2 = $this->request_method . ':' . $this->digest_uri;



				// H(A2)

				$HA2 =  md5($A2);



				// KD(secret, data) = H(concat(secret, ":", data))

				// if qop == auth:

				// request-digest  = <"> < KD ( H(A1),     unq(nonce-value)

				//                              ":" nc-value

				//                              ":" unq(cnonce-value)

				//                              ":" unq(qop-value)

				//                              ":" H(A2)

				//                            ) <">

				// if qop is missing,

				// request-digest  = <"> < KD ( H(A1), unq(nonce-value) ":" H(A2) ) > <">



				$unhashedDigest = '';

				$nonce = isset($digestRequest['nonce']) ? $digestRequest['nonce'] : '';

				$cnonce = $nonce;

				if ($digestRequest['qop'] != '') {

					$unhashedDigest = $HA1 . ':' . $nonce . ':' . sprintf("%08d", $digestRequest['nc']) . ':' . $cnonce . ':' . $digestRequest['qop'] . ':' . $HA2;

				} else {

					$unhashedDigest = $HA1 . ':' . $nonce . ':' . $HA2;

				}



				$hashedDigest = md5($unhashedDigest);



				$opaque = '';

				if (isset($digestRequest['opaque'])) {

					$opaque = ', opaque="' . $digestRequest['opaque'] . '"';

				}



				$this->setHeader('Authorization', 'Digest username="' . $username . '", realm="' . $digestRequest['realm'] . '", nonce="' . $nonce . '", uri="' . $this->digest_uri . $opaque . '", cnonce="' . $cnonce . '", nc=' . sprintf("%08x", $digestRequest['nc']) . ', qop="' . $digestRequest['qop'] . '", response="' . $hashedDigest . '"');

			}

		} elseif ($authtype == 'certificate') {

			$this->certRequest = $certRequest;

			$this->debug('Authorization header not set for certificate');

		} elseif ($authtype == 'ntlm') {

			// do nothing

			$this->debug('Authorization header not set for ntlm');

		}

		$this->username = $username;

		$this->password = $password;

		$this->authtype = $authtype;

		$this->digestRequest = $digestRequest;

	}



	/**

	* set the soapaction value

	*

	* @param    string $soapaction

	* @access   public

	*/

	function setSOAPAction($soapaction) {

		$this->setHeader('SOAPAction', '"' . $soapaction . '"');

	}



	/**

	* use http encoding

	*

	* @param    string $enc encoding style. supported values: gzip, deflate, or both

	* @access   public

	*/

	function setEncoding($enc='gzip, deflate') {

		if (function_exists('gzdeflate')) {

			$this->protocol_version = '1.1';

			$this->setHeader('Accept-Encoding', $enc);

			if (!isset($this->outgoing_headers['Connection'])) {

				$this->setHeader('Connection', 'close');

				$this->persistentConnection = false;

			}

			// deprecated as of PHP 5.3.0

			//set_magic_quotes_runtime(0);

			$this->encoding = $enc;

		}

	}



	/**

	* set proxy info here

	*

	* @param    string $proxyhost use an empty string to remove proxy

	* @param    string $proxyport

	* @param	string $proxyusername

	* @param	string $proxypassword

	* @param	string $proxyauthtype (basic|ntlm)

	* @access   public

	*/

	function setProxy($proxyhost, $proxyport, $proxyusername = '', $proxypassword = '', $proxyauthtype = 'basic') {

		if ($proxyhost) {

			$this->proxy = array(

				'host' => $proxyhost,

				'port' => $proxyport,

				'username' => $proxyusername,

				'password' => $proxypassword,

				'authtype' => $proxyauthtype

			);

			if ($proxyusername != '' && $proxypassword != '' && $proxyauthtype = 'basic') {

				$this->setHeader('Proxy-Authorization', ' Basic '.base64_encode($proxyusername.':'.$proxypassword));

			}

		} else {

			$this->debug('remove proxy');

			$proxy = null;

			unsetHeader('Proxy-Authorization');

		}

	}





	/**

	 * Test if the given string starts with a header that is to be skipped.

	 * Skippable headers result from chunked transfer and proxy requests.

	 *

	 * @param	string $data The string to check.

	 * @returns	boolean	Whether a skippable header was found.

	 * @access	private

	 */

	function isSkippableCurlHeader(&$data) {

		$skipHeaders = array(	'HTTP/1.1 100',

								'HTTP/1.0 301',

								'HTTP/1.1 301',

								'HTTP/1.0 302',

								'HTTP/1.1 302',

								'HTTP/1.0 401',

								'HTTP/1.1 401',

								'HTTP/1.0 200 Connection established');

		foreach ($skipHeaders as $hd) {

			$prefix = substr($data, 0, strlen($hd));

			if ($prefix == $hd) return true;

		}



		return false;

	}



	/**

	* decode a string that is encoded w/ "chunked' transfer encoding

 	* as defined in RFC2068 19.4.6

	*

	* @param    string $buffer

	* @param    string $lb

	* @returns	string

	* @access   public

	* @deprecated

	*/

	function decodeChunked($buffer, $lb){

		// length := 0

		$length = 0;

		$new = '';



		// read chunk-size, chunk-extension (if any) and CRLF

		// get the position of the linebreak

		$chunkend = strpos($buffer, $lb);

		if ($chunkend == FALSE) {

			$this->debug('no linebreak found in decodeChunked');

			return $new;

		}

		$temp = substr($buffer,0,$chunkend);

		$chunk_size = hexdec( trim($temp) );

		$chunkstart = $chunkend + strlen($lb);

		// while (chunk-size > 0) {

		while ($chunk_size > 0) {

			$this->debug("chunkstart: $chunkstart chunk_size: $chunk_size");

			$chunkend = strpos( $buffer, $lb, $chunkstart + $chunk_size);



			// Just in case we got a broken connection

		  	if ($chunkend == FALSE) {

		  	    $chunk = substr($buffer,$chunkstart);

				// append chunk-data to entity-body

		    	$new .= $chunk;

		  	    $length += strlen($chunk);

		  	    break;

			}



		  	// read chunk-data and CRLF

		  	$chunk = substr($buffer,$chunkstart,$chunkend-$chunkstart);

		  	// append chunk-data to entity-body

		  	$new .= $chunk;

		  	// length := length + chunk-size

		  	$length += strlen($chunk);

		  	// read chunk-size and CRLF

		  	$chunkstart = $chunkend + strlen($lb);



		  	$chunkend = strpos($buffer, $lb, $chunkstart) + strlen($lb);

			if ($chunkend == FALSE) {

				break; //Just in case we got a broken connection

			}

			$temp = substr($buffer,$chunkstart,$chunkend-$chunkstart);

			$chunk_size = hexdec( trim($temp) );

			$chunkstart = $chunkend;

		}

		return $new;

	}



	/**

	 * Writes the payload, including HTTP headers, to $this->outgoing_payload.

	 *

	 * @param	string $data HTTP body

	 * @param	string $cookie_str data for HTTP Cookie header

	 * @return	void

	 * @access	private

	 */

	function buildPayload($data, $cookie_str = '') {

		// Note: for cURL connections, $this->outgoing_payload is ignored,

		// as is the Content-Length header, but these are still created as

		// debugging guides.



		// add content-length header

		if ($this->request_method != 'GET') {

			$this->setHeader('Content-Length', strlen($data));

		}



		// start building outgoing payload:

		if ($this->proxy) {

			$uri = $this->url;

		} else {

			$uri = $this->uri;

		}

		$req = "$this->request_method $uri HTTP/$this->protocol_version";

		$this->debug("HTTP request: $req");

		$this->outgoing_payload = "$req\r\n";



		// loop thru headers, serializing

		foreach($this->outgoing_headers as $k => $v){

			$hdr = $k.': '.$v;

			$this->debug("HTTP header: $hdr");

			$this->outgoing_payload .= "$hdr\r\n";

		}



		// add any cookies

		if ($cookie_str != '') {

			$hdr = 'Cookie: '.$cookie_str;

			$this->debug("HTTP header: $hdr");

			$this->outgoing_payload .= "$hdr\r\n";

		}



		// header/body separator

		$this->outgoing_payload .= "\r\n";



		// add data

		$this->outgoing_payload .= $data;

	}



	/**

	* sends the SOAP request via HTTP[S]

	*

	* @param    string $data message data

	* @param	array $cookies cookies to send

	* @return	boolean	true if OK, false if problem

	* @access   private

	*/

	function sendRequest($data, $cookies = NULL) {

		// build cookie string

		$cookie_str = $this->getCookiesForRequest($cookies, (($this->scheme == 'ssl') || ($this->scheme == 'https')));



		// build payload

		$this->buildPayload($data, $cookie_str);



	  if ($this->io_method() == 'socket') {

		// send payload

		if(!fputs($this->fp, $this->outgoing_payload, strlen($this->outgoing_payload))) {

			$this->setError('couldn\'t write message data to socket');

			$this->debug('couldn\'t write message data to socket');

			return false;

		}

		$this->debug('wrote data to socket, length = ' . strlen($this->outgoing_payload));

		return true;

	  } else if ($this->io_method() == 'curl') {

		// set payload

		// cURL does say this should only be the verb, and in fact it

		// turns out that the URI and HTTP version are appended to this, which

		// some servers refuse to work with (so we no longer use this method!)

		//$this->setCurlOption(CURLOPT_CUSTOMREQUEST, $this->outgoing_payload);

		$curl_headers = array();

		foreach($this->outgoing_headers as $k => $v){

			if ($k == 'Connection' || $k == 'Content-Length' || $k == 'Host' || $k == 'Authorization' || $k == 'Proxy-Authorization') {

				$this->debug("Skip cURL header $k: $v");

			} else {

				$curl_headers[] = "$k: $v";

			}

		}

		if ($cookie_str != '') {

			$curl_headers[] = 'Cookie: ' . $cookie_str;

		}

		$this->setCurlOption(CURLOPT_HTTPHEADER, $curl_headers);

		$this->debug('set cURL HTTP headers');

		if ($this->request_method == "POST") {

	  		$this->setCurlOption(CURLOPT_POST, 1);

	  		$this->setCurlOption(CURLOPT_POSTFIELDS, $data);

			$this->debug('set cURL POST data');

	  	} else {

	  	}

		// insert custom user-set cURL options

		foreach ($this->ch_options as $key => $val) {

			$this->setCurlOption($key, $val);

		}



		$this->debug('set cURL payload');

		return true;

	  }

	}



	/**

	* gets the SOAP response via HTTP[S]

	*

	* @return	string the response (also sets member variables like incoming_payload)

	* @access   private

	*/

	function getResponse(){

		$this->incoming_payload = '';



	  if ($this->io_method() == 'socket') {

	    // loop until headers have been retrieved

	    $data = '';

	    while (!isset($lb)){



			// We might EOF during header read.

			if(feof($this->fp)) {

				$this->incoming_payload = $data;

				$this->debug('found no headers before EOF after length ' . strlen($data));

				$this->debug("received before EOF:\n" . $data);

				$this->setError('server failed to send headers');

				return false;

			}



			$tmp = fgets($this->fp, 256);

			$tmplen = strlen($tmp);

			$this->debug("read line of $tmplen bytes: " . trim($tmp));



			if ($tmplen == 0) {

				$this->incoming_payload = $data;

				$this->debug('socket read of headers timed out after length ' . strlen($data));

				$this->debug("read before timeout: " . $data);

				$this->setError('socket read of headers timed out');

				return false;

			}



			$data .= $tmp;

			$pos = strpos($data,"\r\n\r\n");

			if($pos > 1){

				$lb = "\r\n";

			} else {

				$pos = strpos($data,"\n\n");

				if($pos > 1){

					$lb = "\n";

				}

			}

			// remove 100 headers

			if (isset($lb) && preg_match('/^HTTP\/1.1 100/',$data)) {

				unset($lb);

				$data = '';

			}//

		}

		// store header data

		$this->incoming_payload .= $data;

		$this->debug('found end of headers after length ' . strlen($data));

		// process headers

		$header_data = trim(substr($data,0,$pos));

		$header_array = explode($lb,$header_data);

		$this->incoming_headers = array();

		$this->incoming_cookies = array();

		foreach($header_array as $header_line){

			$arr = explode(':',$header_line, 2);

			if(count($arr) > 1){

				$header_name = strtolower(trim($arr[0]));

				$this->incoming_headers[$header_name] = trim($arr[1]);

				if ($header_name == 'set-cookie') {

					// TODO: allow multiple cookies from parseCookie

					$cookie = $this->parseCookie(trim($arr[1]));

					if ($cookie) {

						$this->incoming_cookies[] = $cookie;

						$this->debug('found cookie: ' . $cookie['name'] . ' = ' . $cookie['value']);

					} else {

						$this->debug('did not find cookie in ' . trim($arr[1]));

					}

    			}

			} else if (isset($header_name)) {

				// append continuation line to previous header

				$this->incoming_headers[$header_name] .= $lb . ' ' . $header_line;

			}

		}



		// loop until msg has been received

		if (isset($this->incoming_headers['transfer-encoding']) && strtolower($this->incoming_headers['transfer-encoding']) == 'chunked') {

			$content_length =  2147483647;	// ignore any content-length header

			$chunked = true;

			$this->debug("want to read chunked content");

		} elseif (isset($this->incoming_headers['content-length'])) {

			$content_length = $this->incoming_headers['content-length'];

			$chunked = false;

			$this->debug("want to read content of length $content_length");

		} else {

			$content_length =  2147483647;

			$chunked = false;

			$this->debug("want to read content to EOF");

		}

		$data = '';

		do {

			if ($chunked) {

				$tmp = fgets($this->fp, 256);

				$tmplen = strlen($tmp);

				$this->debug("read chunk line of $tmplen bytes");

				if ($tmplen == 0) {

					$this->incoming_payload = $data;

					$this->debug('socket read of chunk length timed out after length ' . strlen($data));

					$this->debug("read before timeout:\n" . $data);

					$this->setError('socket read of chunk length timed out');

					return false;

				}

				$content_length = hexdec(trim($tmp));

				$this->debug("chunk length $content_length");

			}

			$strlen = 0;

		    while (($strlen < $content_length) && (!feof($this->fp))) {

		    	$readlen = min(8192, $content_length - $strlen);

				$tmp = fread($this->fp, $readlen);

				$tmplen = strlen($tmp);

				$this->debug("read buffer of $tmplen bytes");

				if (($tmplen == 0) && (!feof($this->fp))) {

					$this->incoming_payload = $data;

					$this->debug('socket read of body timed out after length ' . strlen($data));

					$this->debug("read before timeout:\n" . $data);

					$this->setError('socket read of body timed out');

					return false;

				}

				$strlen += $tmplen;

				$data .= $tmp;

			}

			if ($chunked && ($content_length > 0)) {

				$tmp = fgets($this->fp, 256);

				$tmplen = strlen($tmp);

				$this->debug("read chunk terminator of $tmplen bytes");

				if ($tmplen == 0) {

					$this->incoming_payload = $data;

					$this->debug('socket read of chunk terminator timed out after length ' . strlen($data));

					$this->debug("read before timeout:\n" . $data);

					$this->setError('socket read of chunk terminator timed out');

					return false;

				}

			}

		} while ($chunked && ($content_length > 0) && (!feof($this->fp)));

		if (feof($this->fp)) {

			$this->debug('read to EOF');

		}

		$this->debug('read body of length ' . strlen($data));

		$this->incoming_payload .= $data;

		$this->debug('received a total of '.strlen($this->incoming_payload).' bytes of data from server');



		// close filepointer

		if(

			(isset($this->incoming_headers['connection']) && strtolower($this->incoming_headers['connection']) == 'close') ||

			(! $this->persistentConnection) || feof($this->fp)){

			fclose($this->fp);

			$this->fp = false;

			$this->debug('closed socket');

		}



		// connection was closed unexpectedly

		if($this->incoming_payload == ''){

			$this->setError('no response from server');

			return false;

		}



		// decode transfer-encoding

//		if(isset($this->incoming_headers['transfer-encoding']) && strtolower($this->incoming_headers['transfer-encoding']) == 'chunked'){

//			if(!$data = $this->decodeChunked($data, $lb)){

//				$this->setError('Decoding of chunked data failed');

//				return false;

//			}

			//print "<pre>\nde-chunked:\n---------------\n$data\n\n---------------\n</pre>";

			// set decoded payload

//			$this->incoming_payload = $header_data.$lb.$lb.$data;

//		}



	  } else if ($this->io_method() == 'curl') {

		// send and receive

		$this->debug('send and receive with cURL');

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

		$data = $this->incoming_payload;



        $cErr = curl_error($this->ch);

		if ($cErr != '') {

        	$err = 'cURL ERROR: '.curl_errno($this->ch).': '.$cErr.'<br>';

        	// TODO: there is a PHP bug that can cause this to SEGV for CURLINFO_CONTENT_TYPE

			foreach(curl_getinfo($this->ch) as $k => $v){

				$err .= "$k: $v<br>";

			}

			$this->debug($err);

			$this->setError($err);

			curl_close($this->ch);

	    	return false;

		} else {

			//echo '<pre>';

			//var_dump(curl_getinfo($this->ch));

			//echo '</pre>';

		}

		// close curl

		$this->debug('No cURL error, closing cURL');

		curl_close($this->ch);



		// try removing skippable headers

		$savedata = $data;

		while ($this->isSkippableCurlHeader($data)) {

			$this->debug("Found HTTP header to skip");

			if ($pos = strpos($data,"\r\n\r\n")) {

				$data = ltrim(substr($data,$pos));

			} elseif($pos = strpos($data,"\n\n") ) {

				$data = ltrim(substr($data,$pos));

			}

		}



		if ($data == '') {

			// have nothing left; just remove 100 header(s)

			$data = $savedata;

			while (preg_match('/^HTTP\/1.1 100/',$data)) {

				if ($pos = strpos($data,"\r\n\r\n")) {

					$data = ltrim(substr($data,$pos));

				} elseif($pos = strpos($data,"\n\n") ) {

					$data = ltrim(substr($data,$pos));

				}

			}

		}



		// separate content from HTTP headers

		if ($pos = strpos($data,"\r\n\r\n")) {

			$lb = "\r\n";

		} elseif( $pos = strpos($data,"\n\n")) {

			$lb = "\n";

		} else {

			$this->debug('no proper separation of headers and document');

			$this->setError('no proper separation of headers and document');

			return false;

		}

		$header_data = trim(substr($data,0,$pos));

		$header_array = explode($lb,$header_data);

		$data = ltrim(substr($data,$pos));

		$this->debug('found proper separation of headers and document');

		$this->debug('cleaned data, stringlen: '.strlen($data));

		// clean headers

		foreach ($header_array as $header_line) {

			$arr = explode(':',$header_line,2);

			if(count($arr) > 1){

				$header_name = strtolower(trim($arr[0]));

				$this->incoming_headers[$header_name] = trim($arr[1]);

				if ($header_name == 'set-cookie') {

					// TODO: allow multiple cookies from parseCookie

					$cookie = $this->parseCookie(trim($arr[1]));

					if ($cookie) {

						$this->incoming_cookies[] = $cookie;

						$this->debug('found cookie: ' . $cookie['name'] . ' = ' . $cookie['value']);

					} else {

						$this->debug('did not find cookie in ' . trim($arr[1]));

					}

    			}

			} else if (isset($header_name)) {

				// append continuation line to previous header

				$this->incoming_headers[$header_name] .= $lb . ' ' . $header_line;

			}

		}

	  }



		$this->response_status_line = $header_array[0];

		$arr = explode(' ', $this->response_status_line, 3);

		$http_version = $arr[0];

		$http_status = intval($arr[1]);

		$http_reason = count($arr) > 2 ? $arr[2] : '';



 		// see if we need to resend the request with http digest authentication

 		if (isset($this->incoming_headers['location']) && ($http_status == 301 || $http_status == 302)) {

 			$this->debug("Got $http_status $http_reason with Location: " . $this->incoming_headers['location']);

 			$this->setURL($this->incoming_headers['location']);

			$this->tryagain = true;

			return false;

		}



 		// see if we need to resend the request with http digest authentication

 		if (isset($this->incoming_headers['www-authenticate']) && $http_status == 401) {

 			$this->debug("Got 401 $http_reason with WWW-Authenticate: " . $this->incoming_headers['www-authenticate']);

 			if (strstr($this->incoming_headers['www-authenticate'], "Digest ")) {

 				$this->debug('Server wants digest authentication');

 				// remove "Digest " from our elements

 				$digestString = str_replace('Digest ', '', $this->incoming_headers['www-authenticate']);



 				// parse elements into array

 				$digestElements = explode(',', $digestString);

 				foreach ($digestElements as $val) {

 					$tempElement = explode('=', trim($val), 2);

 					$digestRequest[$tempElement[0]] = str_replace("\"", '', $tempElement[1]);

 				}



				// should have (at least) qop, realm, nonce

 				if (isset($digestRequest['nonce'])) {

 					$this->setCredentials($this->username, $this->password, 'digest', $digestRequest);

 					$this->tryagain = true;

 					return false;

 				}

 			}

			$this->debug('HTTP authentication failed');

			$this->setError('HTTP authentication failed');

			return false;

 		}



		if (

			($http_status >= 300 && $http_status <= 307) ||

			($http_status >= 400 && $http_status <= 417) ||

			($http_status >= 501 && $http_status <= 505)

		   ) {

			$this->setError("Unsupported HTTP response status $http_status $http_reason (soapclient->response has contents of the response)");

			return false;

		}



		// decode content-encoding

		if(isset($this->incoming_headers['content-encoding']) && $this->incoming_headers['content-encoding'] != ''){

			if(strtolower($this->incoming_headers['content-encoding']) == 'deflate' || strtolower($this->incoming_headers['content-encoding']) == 'gzip'){

    			// if decoding works, use it. else assume data wasn't gzencoded

    			if(function_exists('gzinflate')){

					//$timer->setMarker('starting decoding of gzip/deflated content');

					// IIS 5 requires gzinflate instead of gzuncompress (similar to IE 5 and gzdeflate v. gzcompress)

					// this means there are no Zlib headers, although there should be

					$this->debug('The gzinflate function exists');

					$datalen = strlen($data);

					if ($this->incoming_headers['content-encoding'] == 'deflate') {

						if ($degzdata = @gzinflate($data)) {

	    					$data = $degzdata;

	    					$this->debug('The payload has been inflated to ' . strlen($data) . ' bytes');

	    					if (strlen($data) < $datalen) {

	    						// test for the case that the payload has been compressed twice

		    					$this->debug('The inflated payload is smaller than the gzipped one; try again');

								if ($degzdata = @gzinflate($data)) {

			    					$data = $degzdata;

			    					$this->debug('The payload has been inflated again to ' . strlen($data) . ' bytes');

								}

	    					}

	    				} else {

	    					$this->debug('Error using gzinflate to inflate the payload');

	    					$this->setError('Error using gzinflate to inflate the payload');

	    				}

					} elseif ($this->incoming_headers['content-encoding'] == 'gzip') {

						if ($degzdata = @gzinflate(substr($data, 10))) {	// do our best

							$data = $degzdata;

	    					$this->debug('The payload has been un-gzipped to ' . strlen($data) . ' bytes');

	    					if (strlen($data) < $datalen) {

	    						// test for the case that the payload has been compressed twice

		    					$this->debug('The un-gzipped payload is smaller than the gzipped one; try again');

								if ($degzdata = @gzinflate(substr($data, 10))) {

			    					$data = $degzdata;

			    					$this->debug('The payload has been un-gzipped again to ' . strlen($data) . ' bytes');

								}

	    					}

	    				} else {

	    					$this->debug('Error using gzinflate to un-gzip the payload');

							$this->setError('Error using gzinflate to un-gzip the payload');

	    				}

					}

					//$timer->setMarker('finished decoding of gzip/deflated content');

					//print "<xmp>\nde-inflated:\n---------------\n$data\n-------------\n</xmp>";

					// set decoded payload

					$this->incoming_payload = $header_data.$lb.$lb.$data;

    			} else {

					$this->debug('The server sent compressed data. Your php install must have the Zlib extension compiled in to support this.');

					$this->setError('The server sent compressed data. Your php install must have the Zlib extension compiled in to support this.');

				}

			} else {

				$this->debug('Unsupported Content-Encoding ' . $this->incoming_headers['content-encoding']);

				$this->setError('Unsupported Content-Encoding ' . $this->incoming_headers['content-encoding']);

			}

		} else {

			$this->debug('No Content-Encoding header');

		}



		if(strlen($data) == 0){

			$this->debug('no data after headers!');

			$this->setError('no data present after HTTP headers');

			return false;

		}



		return $data;

	}



	/**

	 * sets the content-type for the SOAP message to be sent

	 *

	 * @param	string $type the content type, MIME style

	 * @param	mixed $charset character set used for encoding (or false)

	 * @access	public

	 */

	function setContentType($type, $charset = false) {

		$this->setHeader('Content-Type', $type . ($charset ? '; charset=' . $charset : ''));

	}



	/**

	 * specifies that an HTTP persistent connection should be used

	 *

	 * @return	boolean whether the request was honored by this method.

	 * @access	public

	 */

	function usePersistentConnection(){

		if (isset($this->outgoing_headers['Accept-Encoding'])) {

			return false;

		}

		$this->protocol_version = '1.1';

		$this->persistentConnection = true;

		$this->setHeader('Connection', 'Keep-Alive');

		return true;

	}



	/**

	 * parse an incoming Cookie into it's parts

	 *

	 * @param	string $cookie_str content of cookie

	 * @return	array with data of that cookie

	 * @access	private

	 */

	/*

	 * TODO: allow a Set-Cookie string to be parsed into multiple cookies

	 */

	function parseCookie($cookie_str) {

		$cookie_str = str_replace('; ', ';', $cookie_str) . ';';

		$data = preg_split('/;/', $cookie_str);

		$value_str = $data[0];



		$cookie_param = 'domain=';

		$start = strpos($cookie_str, $cookie_param);

		if ($start > 0) {

			$domain = substr($cookie_str, $start + strlen($cookie_param));

			$domain = substr($domain, 0, strpos($domain, ';'));

		} else {

			$domain = '';

		}



		$cookie_param = 'expires=';

		$start = strpos($cookie_str, $cookie_param);

		if ($start > 0) {

			$expires = substr($cookie_str, $start + strlen($cookie_param));

			$expires = substr($expires, 0, strpos($expires, ';'));

		} else {

			$expires = '';

		}



		$cookie_param = 'path=';

		$start = strpos($cookie_str, $cookie_param);

		if ( $start > 0 ) {

			$path = substr($cookie_str, $start + strlen($cookie_param));

			$path = substr($path, 0, strpos($path, ';'));

		} else {

			$path = '/';

		}



		$cookie_param = ';secure;';

		if (strpos($cookie_str, $cookie_param) !== FALSE) {

			$secure = true;

		} else {

			$secure = false;

		}



		$sep_pos = strpos($value_str, '=');



		if ($sep_pos) {

			$name = substr($value_str, 0, $sep_pos);

			$value = substr($value_str, $sep_pos + 1);

			$cookie= array(	'name' => $name,

			                'value' => $value,

							'domain' => $domain,

							'path' => $path,

							'expires' => $expires,

							'secure' => $secure

							);

			return $cookie;

		}

		return false;

	}



	/**

	 * sort out cookies for the current request

	 *

	 * @param	array $cookies array with all cookies

	 * @param	boolean $secure is the send-content secure or not?

	 * @return	string for Cookie-HTTP-Header

	 * @access	private

	 */

	function getCookiesForRequest($cookies, $secure=false) {

		$cookie_str = '';

		if ((! is_null($cookies)) && (is_array($cookies))) {

			foreach ($cookies as $cookie) {

				if (! is_array($cookie)) {

					continue;

				}

	    		$this->debug("check cookie for validity: ".$cookie['name'].'='.$cookie['value']);

				if ((isset($cookie['expires'])) && (! empty($cookie['expires']))) {

					if (strtotime($cookie['expires']) <= time()) {

						$this->debug('cookie has expired');

						continue;

					}

				}

				if ((isset($cookie['domain'])) && (! empty($cookie['domain']))) {

					$domain = preg_quote($cookie['domain']);

					if (! preg_match("'.*$domain$'i", $this->host)) {

						$this->debug('cookie has different domain');

						continue;

					}

				}

				if ((isset($cookie['path'])) && (! empty($cookie['path']))) {

					$path = preg_quote($cookie['path']);

					if (! preg_match("'^$path.*'i", $this->path)) {

						$this->debug('cookie is for a different path');

						continue;

					}

				}

				if ((! $secure) && (isset($cookie['secure'])) && ($cookie['secure'])) {

					$this->debug('cookie is secure, transport is not');

					continue;

				}

				$cookie_str .= $cookie['name'] . '=' . $cookie['value'] . '; ';

	    		$this->debug('add cookie to Cookie-String: ' . $cookie['name'] . '=' . $cookie['value']);

			}

		}

		return $cookie_str;

  }

}





?>