root/trunk/lib/class.soap_transport_http.php

<?php




/**
* 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>
* @version  $Id: class.soap_transport_http.php,v 1.57 2005/07/27 19:24:42 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 $useSOAPAction = true;
    var $persistentConnection = false;
    var $ch = false;    // cURL handle
    var $username = '';
    var $password = '';
    var $authtype = '';
    var $digestRequest = array();
    var $certRequest = array();    // keys must be cainfofile (optional), sslcertfile, sslkeyfile, passphrase, verifypeer (optional), verifyhost (optional)
                                // cainfofile: certificate authority file, e.g. '$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
                                // verifypeer: default is 1
                                // verifyhost: default is 1

    /**
    * constructor
    */
    function soap_transport_http($url){
        parent::nusoap_base();
        $this->setURL($url);
        ereg('\$Revisio' . 'n: ([^ ]+)', $this->revision, $rev);
        $this->outgoing_headers['User-Agent'] = $this->title.'/'.$this->version.' ('.$rev[1].')';
        $this->debug('set User-Agent: ' . $this->outgoing_headers['User-Agent']);
    }

    function setURL($url) {
        $this->url = $url;

        $u = parse_url($url);
        foreach($u as $k => $v){
            $this->debug("$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->outgoing_headers['Host'] = $this->host;
        } else {
            $this->outgoing_headers['Host'] = $this->host.':'.$this->port;
        }
        $this->debug('set Host: ' . $this->outgoing_headers['Host']);

        if (isset($u['user']) && $u['user'] != '') {
            $this->setCredentials(urldecode($u['user']), isset($u['pass']) ? urldecode($u['pass']) : '');
        }
    }
    
    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->scheme == 'http' || $this->scheme == 'ssl') {
        // use persistent connection
        if($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://' . $this->host;
        } else {
            $host = $this->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->scheme == 'https') {
        if (!extension_loaded('curl')) {
            $this->setError('CURL Extension, or OpenSSL extension w/ PHP version >= 4.3 is required for HTTPS');
            return false;
        }
        $this->debug('connect using https');
        // init CURL
        $this->ch = curl_init();
        // set url
        $hostURL = ($this->port != '') ? "https://$this->host:$this->port" : "https://$this->host";
        // add path
        $hostURL .= $this->path;
        curl_setopt($this->ch, CURLOPT_URL, $hostURL);
        // follow location headers (re-directs)
        curl_setopt($this->ch, CURLOPT_FOLLOWLOCATION, 1);
        // ask for headers in the response output
        curl_setopt($this->ch, CURLOPT_HEADER, 1);
        // ask for the response output as the return value
        curl_setopt($this->ch, CURLOPT_RETURNTRANSFER, 1);
        // encode
        // We manage this ourselves through headers and encoding
//        if(function_exists('gzuncompress')){
//            curl_setopt($this->ch, CURLOPT_ENCODING, 'deflate');
//        }
        // persistent connection
        if ($this->persistentConnection) {
            // The way we send data, we cannot use persistent connections, since
            // there will be some "junk" at the end of our request.
            //curl_setopt($this->ch, CURL_HTTP_VERSION_1_1, true);
            $this->persistentConnection = false;
            $this->outgoing_headers['Connection'] = 'close';
            $this->debug('set Connection: ' . $this->outgoing_headers['Connection']);
        }
        // set timeout
        if ($connection_timeout != 0) {
            curl_setopt($this->ch, CURLOPT_TIMEOUT, $connection_timeout);
        }
        // TODO: cURL has added a connection timeout separate from the response timeout
        //if ($connection_timeout != 0) {
        //    curl_setopt($this->ch, CURLOPT_CONNECTIONTIMEOUT, $connection_timeout);
        //}
        //if ($response_timeout != 0) {
        //    curl_setopt($this->ch, CURLOPT_TIMEOUT, $response_timeout);
        //}

        // 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.
//curl_setopt($this->ch, CURLOPT_CAINFO, 'f:\php-4.3.2-win32\extensions\curl-ca-bundle.crt');        
        curl_setopt($this->ch, CURLOPT_SSL_VERIFYPEER, 0);
        curl_setopt($this->ch, CURLOPT_SSL_VERIFYHOST, 0);

        // support client certificates (thanks Tobias Boes, Doug Anarino, Eryan Ariobowo)
        if ($this->authtype == 'certificate') {
            if (isset($this->certRequest['cainfofile'])) {
                curl_setopt($this->ch, CURLOPT_CAINFO, $this->certRequest['cainfofile']);
            }
            if (isset($this->certRequest['verifypeer'])) {
                curl_setopt($this->ch, CURLOPT_SSL_VERIFYPEER, $this->certRequest['verifypeer']);
            } else {
                curl_setopt($this->ch, CURLOPT_SSL_VERIFYPEER, 1);
            }
            if (isset($this->certRequest['verifyhost'])) {
                curl_setopt($this->ch, CURLOPT_SSL_VERIFYHOST, $this->certRequest['verifyhost']);
            } else {
                curl_setopt($this->ch, CURLOPT_SSL_VERIFYHOST, 1);
            }
            if (isset($this->certRequest['sslcertfile'])) {
                curl_setopt($this->ch, CURLOPT_SSLCERT, $this->certRequest['sslcertfile']);
            }
            if (isset($this->certRequest['sslkeyfile'])) {
                curl_setopt($this->ch, CURLOPT_SSLKEY, $this->certRequest['sslkeyfile']);
            }
            if (isset($this->certRequest['passphrase'])) {
                curl_setopt($this->ch, CURLOPT_SSLKEYPASSWD , $this->certRequest['passphrase']);
            }
        }
        $this->debug('cURL connection set up');
        return true;
      } else {
        $this->setError('Unknown scheme ' . $this->scheme);
        $this->debug('Unknown scheme ' . $this->scheme);
        return false;
      }
    }
    
    /**
    * send the SOAP message via HTTP
    *
    * @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->debug('end of send()');
        return $respdata;
    }


    /**
    * send the SOAP message via HTTPS 1.0 using CURL
    *
    * @param    string $msg message data
    * @param    integer $timeout set connection timeout in seconds
    * @param    integer $response_timeout set response timeout in seconds
    * @param    array $cookies cookies to send
    * @return    string data
    * @access   public
    */
    function sendHTTPS($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)
    * @param    array $digestRequest (keys must be nonce, nc, realm, qop)
    * @param    array $certRequest (keys must be cainfofile (optional), sslcertfile, sslkeyfile, passphrase, verifypeer (optional), verifyhost (optional): see corresponding options in cURL docs)
    * @access   public
    */
    function setCredentials($username, $password, $authtype = 'basic', $digestRequest = array(), $certRequest = array()) {
        $this->debug("Set credentials for authtype $authtype");
        // cf. RFC 2617
        if ($authtype == 'basic') {
            $this->outgoing_headers['Authorization'] = 'Basic '.base64_encode(str_replace(':','',$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 = 'POST:' . $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);
    
                $this->outgoing_headers['Authorization'] = 'Digest username="' . $username . '", realm="' . $digestRequest['realm'] . '", nonce="' . $nonce . '", uri="' . $this->digest_uri . '", cnonce="' . $cnonce . '", nc=' . sprintf("%08x", $digestRequest['nc']) . ', qop="' . $digestRequest['qop'] . '", response="' . $hashedDigest . '"';
            }
        } elseif ($authtype == 'certificate') {
            $this->certRequest = $certRequest;
        }
        $this->username = $username;
        $this->password = $password;
        $this->authtype = $authtype;
        $this->digestRequest = $digestRequest;
        
        if (isset($this->outgoing_headers['Authorization'])) {
            $this->debug('set Authorization: ' . substr($this->outgoing_headers['Authorization'], 0, 12) . '...');
        } else {
            $this->debug('Authorization header not set');
        }
    }
    
    /**
    * set the soapaction value
    *
    * @param    string $soapaction
    * @access   public
    */
    function setSOAPAction($soapaction) {
        $this->outgoing_headers['SOAPAction'] = '"' . $soapaction . '"';
        $this->debug('set SOAPAction: ' . $this->outgoing_headers['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->outgoing_headers['Accept-Encoding'] = $enc;
            $this->debug('set Accept-Encoding: ' . $this->outgoing_headers['Accept-Encoding']);
            if (!isset($this->outgoing_headers['Connection'])) {
                $this->outgoing_headers['Connection'] = 'close';
                $this->persistentConnection = false;
                $this->debug('set Connection: ' . $this->outgoing_headers['Connection']);
            }
            set_magic_quotes_runtime(0);
            // deprecated
            $this->encoding = $enc;
        }
    }
    
    /**
    * set proxy info here
    *
    * @param    string $proxyhost
    * @param    string $proxyport
    * @param    string $proxyusername
    * @param    string $proxypassword
    * @access   public
    */
    function setProxy($proxyhost, $proxyport, $proxyusername = '', $proxypassword = '') {
        $this->uri = $this->url;
        $this->host = $proxyhost;
        $this->port = $proxyport;
        if ($proxyusername != '' && $proxypassword != '') {
            $this->outgoing_headers['Proxy-Authorization'] = ' Basic '.base64_encode($proxyusername.':'.$proxypassword);
            $this->debug('set Proxy-Authorization: ' . $this->outgoing_headers['Proxy-Authorization']);
        }
    }
    
    /**
    * 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 payload, including HTTP headers, to $this->outgoing_payload.
     */
    function buildPayload($data, $cookie_str = '') {
        // add content-length header
        $this->outgoing_headers['Content-Length'] = strlen($data);
        $this->debug('set Content-Length: ' . $this->outgoing_headers['Content-Length']);

        // start building outgoing payload:
        $req = "$this->request_method $this->uri HTTP/$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;
    }

    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->scheme == 'http' || $this->scheme == 'ssl') {
        // send payload
        if(!fputs($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 ($this->scheme == 'https') {
        // set payload
        // TODO: cURL does say this should only be the verb, and in fact it
        // turns out that the URI and HTTP version are appended to this, which
        // some servers refuse to work with
        //curl_setopt($this->ch, CURLOPT_CUSTOMREQUEST, $this->outgoing_payload);
        foreach($this->outgoing_headers as $k => $v){
            $curl_headers[] = "$k: $v";
        }
        if ($cookie_str != '') {
            $curl_headers[] = 'Cookie: ' . $cookie_str;
        }
        curl_setopt($this->ch, CURLOPT_HTTPHEADER, $curl_headers);
        if ($this->request_method == "POST") {
              curl_setopt($this->ch, CURLOPT_POST, 1);
              curl_setopt($this->ch, CURLOPT_POSTFIELDS, $data);
          } else {
          }
        $this->debug('set cURL payload');
        return true;
      }
    }

    function getResponse(){
        $this->incoming_payload = '';
        
      if ($this->scheme == 'http' || $this->scheme == 'ssl') {
        // 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){
                    $lb = "\n";
                }
            }
            // remove 100 header
            if(isset($lb) && ereg('^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->scheme == 'https') {
        // 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);
        
        // remove 100 header(s)
        while (ereg('^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;
            }
        }
      }

        $arr = explode(' ', $header_array[0], 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) {
             $this->debug("Got 301 $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;
    }

    function setContentType($type, $charset = false) {
        $this->outgoing_headers['Content-Type'] = $type . ($charset ? '; charset=' . $charset : '');
        $this->debug('set Content-Type: ' . $this->outgoing_headers['Content-Type']);
    }

    function usePersistentConnection(){
        if (isset($this->outgoing_headers['Accept-Encoding'])) {
            return false;
        }
        $this->protocol_version = '1.1';
        $this->persistentConnection = true;
        $this->outgoing_headers['Connection'] = 'Keep-Alive';
        $this->debug('set Connection: ' . $this->outgoing_headers['Connection']);
        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 = 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;
  }
}


?>