<?php

require_once __DIR__ . '/xentral_autoloader.php';
if (class_exists(Config::class)){
    $config = new Config();
    $updateHost = $config->updateHost ?: 'update.xentral.biz';
}else{
    $updateHost = 'update.xentral.biz';
}
define('XENTRAL_UPDATE_HOST', $updateHost);

$WAWISION['host']=XENTRAL_UPDATE_HOST;
$WAWISION['port']="443";

$myUpd = new UpgradeClient($WAWISION,$this->app);


$myUpd->Connect();
if(isset($sendStats)) {
}
elseif(isset($buy)) {
}
elseif(isset($getBuyList)) {
}
elseif(isset($getBuyInfo)) {
}
elseif(isset($setBeta)) {
}
elseif(isset($setDevelopmentVersion)) {
}
elseif(isset($buyFromDemo)) {
}
elseif(isset($resetXentral)) {
}
elseif(isset($fiskalyCommand)) {
}
elseif(isset($createFiskalyClientFromClientId) && isset($tseId) && isset($organizationId)) {
}
elseif(isset($sma) && isset($sendSmaErrorMessage)) {
}
else{
}
if(!class_exists('Md5Dateien'))
{
  class Md5Dateien
  {
    var $Dateien;
    function __construct($quellverzeichnis)
    {
      $this->getVerzeichnis($quellverzeichnis, '', 0, '');
    }
    
    function getVerzeichnis($quellverzeichnis, $zielverzeichnis, $lvl, $relativ){
      //echo "Verzeichnis: ".$quellverzeichnis." ".$zielverzeichnis.  "\r\n";
      
      $quelllast = $quellverzeichnis;
      if($quellverzeichnis[strlen($quellverzeichnis) - 1] == '/')$quelllast = substr($quellverzeichnis, 0, strlen($quellverzeichnis) - 1);

      $path_parts = pathinfo($quelllast);
      
      $quelllast = $path_parts['basename'];

      if(file_exists($quellverzeichnis)) 
      {
        if($quelllast != 'importer' || $lvl != 1){
          if ($handle = opendir($quellverzeichnis)) {
            while (false !== ($entry = readdir($handle))) {

              if($entry != '.' && $entry != '..' && $entry != '.git' && $entry != '.svn' && $entry != 'main.conf.php' && $entry != 'user.inc.php' && $entry != 'user_db_version.php' && $entry != 'pygen') 
              {
                if(is_dir($quellverzeichnis.'/'.$entry))
                {
                  if(!($lvl == 1 && $entry == 'vorlagen' && strpos($quellverzeichnis,'www')))
                  $this->getVerzeichnis($quellverzeichnis.(strrpos($quellverzeichnis,'/')!==strlen($quellverzeichnis)-1?'/':'').$entry,$zielverzeichnis .(strrpos($zielverzeichnis,'/')!==strlen($zielverzeichnis)-1?'/':'').$entry, $lvl + 1,$relativ.'/'.$entry);
                } else {
                  if(!($lvl == 0 && ($entry == 'INSTALL' || $entry == 'LICENSE_LIST' || $entry == 'LICENSE' || $entry == 'README' || $entry == 'gitlog.txt')))
                  {
                    //$this->getFile($quellverzeichnis.(strrpos($quellverzeichnis,'/')!==strlen($quellverzeichnis)-1?'/':'').$entry,$zielverzeichnis .(strrpos($zielverzeichnis,'/')!==strlen($zielverzeichnis)-1?'/':'').$entry,$relativ.'/'.$entry);
                    if(strtolower(substr($entry,-4)) == '.php')$this->Dateien[$relativ.'/'.$entry] = md5_file($quellverzeichnis.(strrpos($quellverzeichnis,'/')!==strlen($quellverzeichnis)-1?'/':'').$entry);
                  }
                }
              }
            }
            @closedir($handle);
          } else {

          }
        }

      } else {

      }

      return true;
    }
  }
}

class UpgradeClient
{
  var $localmd5sums;

  /**
   * UpgradeClient constructor.
   *
   * @param Config          $conf
   * @param ApplicationCore $app
   */
  public function __construct($conf, $app)
  {
    $this->conf = $conf;
    $this->app = $app;
  }


  function Connect()
  {
    // check connection then stop	

  }	


  function CheckCRT()
  {
    $updateHost = XENTRAL_UPDATE_HOST;
    $cert = shell_exec("openssl s_client -connect {$updateHost}:443 < /dev/null 2>/dev/null | openssl x509 -in /dev/stdin");
    if($cert==$this->conf['cert']."\n") return 1;
    else {
      echo "wrong\n";
      exit;
    }

  }

  function CheckUpdate()
  {
    //$this->dir_rekursiv("./");
    //$parameter['md5sums'] = $this->localmd5sums;
    //shell_exec('find ./ -exec md5sum "{}" \;');
    $lines = null;
    $funktions_ind = null;
    $dateien = new Md5Dateien(__DIR__.'/');
    if(!empty($dateien->Dateien) && is_array($dateien->Dateien)) {
      foreach($dateien->Dateien as $k => $v) {
        if(
          strtolower(substr($k,-4)) === '.php'
          && strpos($k, '_custom') !== false
          && strpos($k,'/vendor/') === false
        ) {
          $datei = __DIR__.$k;
          if(!file_exists($datei)) {
            continue;
          }
          $fh = fopen($datei, 'r');
          if(!$fh) {
            continue;
          }
          $f_ind = -1;
          if(isset($lines)) {
            unset($lines);
          }
          $i = -1;
          while(($line = fgets($fh)) !== false) {
            $i++;
            $lines[$i] = $line;
            if(isset($funktions_ind) && isset($funktions_ind[$k])) {
              foreach($funktions_ind[$k] as $k2 => $v2) {
                if($v2 + 5 >= $i) {
                  $funktions[$k][$k2][] = $line;
                }
              }
            }
            if(strpos($line, 'function') !== false) {
              $f_ind++;
              for($j = $i-5; $j <= $i; $j++) {
                if($j > -1) {
                  $funktions[$k][$f_ind][] = $lines[$j];
                }
              }
              $funktions_ind[$k][$f_ind] = $i;
            }
          }
          fclose($fh);
        }
      }
    }
    $parameter['version'] = @$this->conf['version'];
    if(isset($funktions)) {
      $parameter['funktionen'] = $funktions;
      $this->Request("versionen", $parameter);
    }

    if (is_file(__DIR__ . '/marketing_labels.txt')) {
      $parameter['marketing_labels'] = explode(',', (string)@file_get_contents(__DIR__ . '/marketing_labels.txt'));
    }
    $result = $this->Request("md5list",$parameter);

    if($result==="ERROR") {
      echo "Updates: ERROR FROM SERVER (Perhaps a wrong license?)\n";
      return;
    }

    $rows = explode(";",$result);

    if(count($rows)>0)
    {
      foreach($rows as $value)
      {
        unset($single_row);
        $single_row = explode(":",$value);

        if(count($single_row)>=2 && strlen($single_row[0])>3 && strlen($single_row[1])>3)
        {

          $filename = $single_row[0];
          $file = __DIR__."/".$single_row[0];
          $md5sum = $single_row[1];

          $parameter['file']=$filename;
          $parameter['md5sum']=$md5sum;


          if($file==="./upgradesystemclient.php")
          {

          }	
          else if(is_file($file))
          {
            // pruefe md5sum
            if(md5_file($file)!=$md5sum)
            {
              // wenn update dann UPD_
              echo "update <- $file\n";
              $result = $this->Request("getfile",$parameter);
              $output =  (base64_decode($result));
              //$output = preg_replace('/[^(\x22-\x7F)\x0A]*/','', $output);
              file_put_contents($file."UPD", $output);
              /*
                 $fp = fopen($file."UPD","wb+");
                 fwrite($fp,base64_decode($result));
                 fclose($fp);
               */
              // pruefsuemme neu berechnen wenn passt umbenennen und ins archiv
              echo md5_file($file."UPD");
              echo "-".$md5sum."\n";
              if(md5_file($file."UPD")==$md5sum)
              {
                echo "update ok $file\n";
                rename($file."UPD",$file);
              }
            }
          } else if($file!="") {
            echo "datei <- $file\n";
            // pruefe ob es verzeichnis gibt
            $verzeichnis = dirname($file);
            if(!is_dir($verzeichnis))
            {
              echo "verzeichnis <- $verzeichnis\n";
              mkdir($verzeichnis,0777,true);	
            }
            $result = $this->Request("getfile",$parameter);
            $output =  base64_decode($result);
            //$output = iconv("UTF-8","ISO-8859-1//IGNORE",$output);
            //$output = iconv("ISO-8859-1","UTF-8",$output);
            //$output = preg_replace('/[^(\x20-\x7F)\x0A]*/','', $output);
            file_put_contents($file."NEW", $output);
            /*$fp = fopen($file."NEW","wb+");
              fwrite($fp,base64_decode($result));
              fclose($fp);
             */
            if(md5_file($file."NEW")==$md5sum)
            {
              echo "datei ok $file\n";
              rename($file."NEW",$file);
            } else {
              //	echo "datei XX $file local: ".md5_file($file."NEW")." remote: ".$md5sum."\n";

            }
          } else { }
        }
      }


    }
    //pruefe, update, lege verzeichnis an, lege datei an, loesche datei????


    // download all files with UPD_ prefix


    // get md5 liste von server

    // pruefe ob alle dateien passen, wenn ja dann alle updaten am schluss

    // wenn nein fehler abbrechen und ganzen prozess nochmal starten	

    //echo $md5sums;	


  }


  function CheckUpdateModules()
  {
    $parameter['version']=@$this->conf['version'];
    $result = $this->Request("md5listmodules",$parameter);

    if($result=="ERROR") { echo "Modules: ERROR FROM SERVER (Perhaps a wrong license?)\n"; return;} 

    $rows = explode(";",$result);

    if(count($rows)>0)
    {
      foreach($rows as $value)
      {
        unset($single_row);
        $single_row = explode(":",$value);

        if(count($single_row)>=2 && strlen($single_row[0])>3 && strlen($single_row[1])>3)
        {
          $filename = $single_row[0];
          $file = dirname(__FILE__)."/".$single_row[0];
          $md5sum = $single_row[1];

          $parameter['file']=$filename;
          $parameter['md5sum']=$md5sum;

          if($file=="./upgradesystemclient.php")
          {

          }	
          else if(is_file($file))
          {
            // pruefe md5sum
            if(md5_file($file)!=$md5sum)
            {
              // wenn update dann UPD_
              echo "update (M) <- $file\n";
              $result = $this->Request("getfilemodules",$parameter);
              $output =  (base64_decode($result));
              //$output = preg_replace('/[^(\x22-\x7F)\x0A]*/','', $output);
              file_put_contents($file."UPD", $output);
              /*
                 $fp = fopen($file."UPD","wb+");
                 fwrite($fp,base64_decode($result));
                 fclose($fp);
               */
              // pruefsuemme neu berechnen wenn passt umbenennen und ins archiv
              echo md5_file($file."UPD");
              echo "-".$md5sum."\n";
              if(md5_file($file."UPD")==$md5sum)
              {
                echo "update (M) ok $file\n";
                rename($file."UPD",$file);
              }
            }
          } else if($file!="") {
            echo "datei (M) <- $file\n";
            // pruefe ob es verzeichnis gibt
            $verzeichnis = dirname($file);
            if(!is_dir($verzeichnis))
            {
              echo "verzeichnis (M) <- $verzeichnis\n";
              mkdir($verzeichnis,0777,true);	
            }
            $result = $this->Request("getfilemodules",$parameter);
            $output =  base64_decode($result);
            //$output = iconv("UTF-8","ISO-8859-1//IGNORE",$output);
            //$output = iconv("ISO-8859-1","UTF-8",$output);
            //$output = preg_replace('/[^(\x20-\x7F)\x0A]*/','', $output);
            file_put_contents($file."NEW", $output);
            /*$fp = fopen($file."NEW","wb+");
              fwrite($fp,base64_decode($result));
              fclose($fp);
             */
            if(md5_file($file."NEW")==$md5sum)
            {
              echo "datei (M) ok $file\n";
              rename($file."NEW",$file);
            } else {
              //	echo "datei XX $file local: ".md5_file($file."NEW")." remote: ".$md5sum."\n";

            }
          } else { }
        }
      }


    }
    //pruefe, update, lege verzeichnis an, lege datei an, loesche datei????


    // download all files with UPD_ prefix


    // get md5 liste von server

    // pruefe ob alle dateien passen, wenn ja dann alle updaten am schluss

    // wenn nein fehler abbrechen und ganzen prozess nochmal starten	

    //echo $md5sums;	


  }

  /**
   * @param array $data
   *
   * @return string|null
   */
  public function sendSetDevelopmentStatus($data)
  {
    $parameter['version'] = isset($this->conf['version']) ? $this->conf['version']: null;
    $parameter['data'] = $data;

    return $this->Request('setdevelopmentversion', $parameter);
  }

  /**
   * @param array $data
   *
   * @return string|null
   */
  public function sendSetBetaStatus($data)
  {
    $parameter['version'] = isset($this->conf['version']) ? $this->conf['version']: null;
    $parameter['data'] = $data;

    return $this->Request('setbeta', $parameter);
  }


  function CheckUpdateKey()
  {
    $parameter['SERVER_NAME'] = $_SERVER['SERVER_NAME'];
    if(!empty($_SERVER['HTTP_HOST']) && (empty($parameter['SERVER_NAME']) || $parameter['SERVER_NAME'] === '_')) {
      $parameter['SERVER_NAME'] = $_SERVER['HTTP_HOST'];
    }
    $parameter['phpversion'] = (String)phpversion();
    $parameter['mysqlversion'] = $this->app->DB->GetVersion();
    $parameter['version']=@$this->conf['version'];
    $result = $this->Request('md5listcustom',$parameter);

    if($result==='ERROR') {
      return false;
    }
    
    $rows = explode(';',$result);

    $return = false;

    if(count($rows) <= 0) {
      return false;
    }

    foreach($rows as $value) {
      unset($single_row);
      $single_row = explode(':',$value);

      if(count($single_row)>=2 && strlen($single_row[0])>3 && strlen($single_row[1])>3) {
        $filename = $single_row[0];
        $file = __DIR__.'/'.$single_row[0];
        $md5sum = $single_row[1];

        $parameter['file']=$filename;
        $parameter['md5sum']=$md5sum;

        $fileOk = $filename === './key.php';
        if(!$fileOk && strpos($md5sum, 'DEL') === false) {
          if($filename === './www/themes/new/templates/loginslider.tpl') {
            $fileOk = true;
          }
          elseif(strpos($filename ,'./www/themes/new/templates/') === 0
            && (substr($filename,-4) === '.jpg' || substr($filename,-5) === '.jpeg')
            && strpos($filename, '/', 28) === false) {
            $fileOk = true;
          }
        }
        if(!$fileOk) {
          continue;
        }

        if(is_file($file)) {

          // pruefe md5sum
          if(md5_file($file)!=$md5sum) {
            // wenn update dann UPD_
            $result = $this->Request('getfilecustom',$parameter);
            $output =  (base64_decode($result));
            file_put_contents($file.'UPD', $output);

            if(md5_file($file.'UPD')==$md5sum && $result) {
              $return = rename($file.'UPD',$file);
            }
          }
          else {
            $return = true;
          }
          continue;
        }

        // pruefe ob es verzeichnis gibt
        $verzeichnis = dirname($file);
        if(!is_dir($verzeichnis) && !mkdir($verzeichnis,0777,true) && !is_dir($verzeichnis)) {
        }
        $result = $this->Request('getfilecustom',$parameter);
        $output =  base64_decode($result);
        file_put_contents($file.'NEW', $output);
        if(md5_file($file.'NEW')==$md5sum) {
          $return = rename($file.'NEW',$file);
        }
      }
    }


    return $return;
  }


  function DownloadUpdate()
  {


  }

  function CheckDownloadedUpdate()
  {


  }

  function ExecuteUpdate()
  {

  }


  function Request($command,$parameter)
  {
    global $erp;
    $auth['serial']=$this->app->erp->Firmendaten("lizenz");//$this->conf['serial'];
    $auth['authkey']=$this->app->erp->Firmendaten("schluessel");//$this->conf['authkey'];
    $auth['SERVER_NAME'] = (isset($_SERVER['SERVER_NAME']) && $_SERVER['SERVER_NAME'] != '')?$_SERVER['SERVER_NAME']:(isset($_SERVER['HTTP_HOST'])?$_SERVER['HTTP_HOST']:'');
    $auth = base64_encode(json_encode($auth));
    $parameter = base64_encode(json_encode($parameter));
    $client = new HttpClientUpgrade($this->conf['host'],$this->conf['port']);
    $client->post('/upgradesystem.php', array( "authjson" => $auth, "parameterjson"=>$parameter,"command"=>"$command" ));
    $pageContents = $client->getContent();
    return $pageContents;
  }

  function dir_rekursiv($verzeichnis)
  { 
    $handle =  opendir($verzeichnis);

    while ($datei = readdir($handle))
    {   
      if ($datei != "." && $datei != "..")
      {   
        if (is_dir($verzeichnis.$datei)) // Wenn Verzeichniseintrag ein Verzeichnis ist 
        {   
          // Erneuter Funktionsaufruf, um das aktuelle Verzeichnis auszulesen
          $this->dir_rekursiv($verzeichnis.$datei.'/');
        }
        else
        {   
          // Wenn Verzeichnis-Eintrag eine Datei ist, diese ausgeben
          $this->localmd5sums[$verzeichnis.$datei] = md5_file($verzeichnis.$datei);
        }
      }
    }
    closedir($handle);
  }


}


/* Version 0.9, 6th April 2003 - Simon Willison ( http://simon.incutio.com/ )
Manual: http://scripts.incutio.com/httpclient/
 */

class HttpClientUpgrade {
  // Request vars
  var $host;
  var $port;
  var $path;
  var $method;
  var $postdata = '';
  var $cookies = array();
  var $referer;
  var $accept = 'text/xml,application/xml,application/xhtml+xml,text/html,text/plain,image/png,image/jpeg,image/gif,*/*';
                                                                                                                       var $accept_encoding = 'gzip';
                                                                                                                       var $accept_language = 'en-us';
                                                                                                                       var $user_agent = 'Incutio HttpClientUpgrade v0.9';
  // Options
  var $timeout = 20;
  var $use_gzip = true;
  var $persist_cookies = true;  // If true, received cookies are placed in the $this->cookies array ready for the next request
  // Note: This currently ignores the cookie path (and time) completely. Time is not important, 
  //       but path could possibly lead to security problems.
  var $persist_referers = true; // For each request, sends path of last request as referer
  var $debug = false;
  var $handle_redirects = true; // Auaomtically redirect if Location or URI header is found
  var $max_redirects = 5;
  var $headers_only = false;    // If true, stops receiving once headers have been read.
  // Basic authorization variables
  var $username;
  var $password;
  // Response vars
  var $status;
  var $headers = array();
  var $content = '';
  var $errormsg;
  // Tracker variables
  var $redirect_count = 0;
  var $cookie_host = '';
  function __construct($host, $port=80) {
  $this->host = $host;
  $this->port = $port;
  }
  function get($path, $data = false) {
  $this->path = $path;
  $this->method = 'GET';
  if ($data) {
  $this->path .= '?'.$this->buildQueryString($data);
  }
  return $this->doRequest();
  }
  function post($path, $data) {
  $this->path = $path;
  $this->method = 'POST';
  $this->postdata = $this->buildQueryString($data);
  return $this->doRequest();
  }
  function buildQueryString($data) {
  $querystring = '';
  if (is_array($data)) {
  // Change data in to postable data
  foreach ($data as $key => $val) {
  if (is_array($val)) {
  foreach ($val as $val2) {
  $querystring .= urlencode($key).'='.urlencode($val2).'&';
  }
  } else {
  $querystring .= urlencode($key).'='.urlencode($val).'&';
  }
  }
  $querystring = substr($querystring, 0, -1); // Eliminate unnecessary &
  } else {
  $querystring = $data;
  }
  return $querystring;
  }
  function doRequest() {
  // Performs the actual HTTP request, returning true or false depending on outcome
  // check if port is available
  if(!fsockopen("ssl://".$this->host, $this->port, $errno, $errstr, $this->timeout) && $this->port==443)
  {
  $this->port=80;
  }

  if($this->port==443)
    $url = "ssl://".$this->host;
  else
    $url = $this->host;

  if (!$fp = @fsockopen($url, $this->port, $errno, $errstr, $this->timeout)) {
    // Set error message
    switch($errno) {
      case -3:
        $this->errormsg = 'Socket creation failed (-3)';
      case -4:
        $this->errormsg = 'DNS lookup failure (-4)';
      case -5:
        $this->errormsg = 'Connection refused or timed out (-5)';
      default:
        $this->errormsg = 'Connection failed ('.$errno.')';
            $this->errormsg .= ' '.$errstr;
            $this->debug($this->errormsg);
            }
            return false;
            }
            socket_set_timeout($fp, $this->timeout);
            $request = $this->buildRequest();
            $this->debug('Request', $request);
            fwrite($fp, $request);
            // Reset all the variables that should not persist between requests
            $this->headers = array();
            $this->content = '';
            $this->errormsg = '';
            // Set a couple of flags
            $inHeaders = true;
            $atStart = true;
            // Now start reading back the response
            while (!feof($fp)) {
            $line = fgets($fp, 4096);
            if ($atStart) {
              // Deal with first line of returned data
              $atStart = false;
              if (!preg_match('/HTTP\/(\\d\\.\\d)\\s*(\\d+)\\s*(.*)/', $line, $m)) {
                $this->errormsg = "Status code line invalid: ".htmlentities($line);
                $this->debug($this->errormsg);
                //return false;
              }
              $http_version = $m[1]; // not used
              $this->status = $m[2];
              $status_string = $m[3]; // not used
              $this->debug(trim($line));
              continue;
            }
            if ($inHeaders) {
              if (trim($line) == '') {
                $inHeaders = false;
                $this->debug('Received Headers', $this->headers);
                if ($this->headers_only) {
                  break; // Skip the rest of the input
                }
                continue;
              }
              if (!preg_match('/([^:]+):\\s*(.*)/', $line, $m)) {
                // Skip to the next header
                continue;
              }
              $key = strtolower(trim($m[1]));
              $val = trim($m[2]);
              // Deal with the possibility of multiple headers of same name
              if (isset($this->headers[$key])) {
                if (is_array($this->headers[$key])) {
                  $this->headers[$key][] = $val;
                } else {
                  $this->headers[$key] = array($this->headers[$key], $val);
                }
              } else {
                $this->headers[$key] = $val;
              }
              continue;
            }
            // We're not in the headers, so append the line to the contents
            $this->content .= $line;
            }
            fclose($fp);
            // If data is compressed, uncompress it
            if (isset($this->headers['content-encoding']) && $this->headers['content-encoding'] == 'gzip') {
              $this->debug('Content is gzip encoded, unzipping it');
              $this->content = substr($this->content, 10); // See http://www.php.net/manual/en/function.gzencode.php
              $this->content = gzinflate($this->content);
            }
            // If $persist_cookies, deal with any cookies
            if ($this->persist_cookies && isset($this->headers['set-cookie']) && $this->host == $this->cookie_host) {
              $cookies = $this->headers['set-cookie'];
              if (!is_array($cookies)) {
                $cookies = array($cookies);
              }
              foreach ($cookies as $cookie) {
                if (preg_match('/([^=]+)=([^;]+);/', $cookie, $m)) {
                  $this->cookies[$m[1]] = $m[2];
                }
              }
              // Record domain of cookies for security reasons
              $this->cookie_host = $this->host;
            }
            // If $persist_referers, set the referer ready for the next request
            if ($this->persist_referers) {
              $this->debug('Persisting referer: '.$this->getRequestURL());
              $this->referer = $this->getRequestURL();
            }
            // Finally, if handle_redirects and a redirect is sent, do that
            if ($this->handle_redirects) {
              if (++$this->redirect_count >= $this->max_redirects) {
                $this->errormsg = 'Number of redirects exceeded maximum ('.$this->max_redirects.')';
                    $this->debug($this->errormsg);
                    $this->redirect_count = 0;
                    return false;
                    }
                    $location = isset($this->headers['location']) ? $this->headers['location'] : '';
                    $uri = isset($this->headers['uri']) ? $this->headers['uri'] : '';
                    if ($location || $uri) {
                    $url = parse_url($location.$uri);
                    // This will FAIL if redirect is to a different site
                    return $this->get($url['path']);
                    }
                    }
                    return true;
                    }
                    function buildRequest() {
                    $headers = array();
                    $headers[] = "{$this->method} {$this->path} HTTP/1.0"; // Using 1.1 leads to all manner of problems, such as "chunked" encoding
                    $headers[] = "Host: {$this->host}";
                    $headers[] = "User-Agent: {$this->user_agent}";
                    $headers[] = "Accept: {$this->accept}";
                    if ($this->use_gzip) {
                      $headers[] = "Accept-encoding: {$this->accept_encoding}";
                    }
                    $headers[] = "Accept-language: {$this->accept_language}";
                    if ($this->referer) {
                      $headers[] = "Referer: {$this->referer}";
                    }
                    // Cookies
                    if ($this->cookies) {
                      $cookie = 'Cookie: ';
                      foreach ($this->cookies as $key => $value) {
                        $cookie .= "$key=$value; ";
                      }
                      $headers[] = $cookie;
                    }
                    // Basic authentication
                    if ($this->username && $this->password) {
                      $headers[] = 'Authorization: BASIC '.base64_encode($this->username.':'.$this->password);
                    }
                    // If this is a POST, set the content type and length
                    if ($this->postdata) {
                      $headers[] = 'Content-Type: application/x-www-form-urlencoded';
                      $headers[] = 'Content-Length: '.strlen($this->postdata);
                    }
                    $request = implode("\r\n", $headers)."\r\n\r\n".$this->postdata;
                    return $request;
                    }
                    function getStatus() {
                      return $this->status;
                    }
                    function getContent() {
                      return $this->content;
                    }
                    function getHeaders() {
                      return $this->headers;
                    }
                    function getHeader($header) {
                      $header = strtolower($header);
                      if (isset($this->headers[$header])) {
                        return $this->headers[$header];
                      } else {
                        return false;
                      }
                    }
                    function getError() {
                      return $this->errormsg;
                    }
                    function getCookies() {
                      return $this->cookies;
                    }
                    function getRequestURL() {
                      $url = 'http://'.$this->host;
                      if ($this->port != 80) {
                        $url .= ':'.$this->port;
                      }            
                      $url .= $this->path;
                      return $url;
                    }
                    // Setter methods
                    function setUserAgent($string) {
                      $this->user_agent = $string;
                    }
                    function setAuthorization($username, $password) {
                      $this->username = $username;
                      $this->password = $password;
                    }
                    function setCookies($array) {
                      $this->cookies = $array;
                    }
                    // Option setting methods
                    function useGzip($boolean) {
                      $this->use_gzip = $boolean;
                    }
                    function setPersistCookies($boolean) {
                      $this->persist_cookies = $boolean;
                    }
                    function setPersistReferers($boolean) {
                      $this->persist_referers = $boolean;
                    }
                    function setHandleRedirects($boolean) {
                      $this->handle_redirects = $boolean;
                    }
                    function setMaxRedirects($num) {
                      $this->max_redirects = $num;
                    }
                    function setHeadersOnly($boolean) {
                      $this->headers_only = $boolean;
                    }
                    function setDebug($boolean) {
                      $this->debug = $boolean;
                    }
                    // "Quick" static methods
                    function quickGet($url) {
                      $bits = parse_url($url);
                      $host = $bits['host'];
                      $port = isset($bits['port']) ? $bits['port'] : 80;
                      $path = isset($bits['path']) ? $bits['path'] : '/';
                      if (isset($bits['query'])) {
                        $path .= '?'.$bits['query'];
                      }
                      $client = new HttpClientUpgrade($host, $port);
                      if (!$client->get($path)) {
                        return false;
                      } else {
                        return $client->getContent();
                      }
                    }
                    function quickPost($url, $data) {
                      $bits = parse_url($url);
                      $host = $bits['host'];
                      $port = isset($bits['port']) ? $bits['port'] : 80;
                      $path = isset($bits['path']) ? $bits['path'] : '/';
                      $client = new HttpClientUpgrade($host, $port);
                      if (!$client->post($path, $data)) {
                        return false;
                      } else {
                        return $client->getContent();
                      }
                    }
                    function debug($msg, $object = false) {
                      if ($this->debug) {
                        print '<div style="border: 1px solid red; padding: 0.5em; margin: 0.5em;"><strong>HttpClientUpgrade Debug:</strong> '.$msg;
                        if ($object) {
                          ob_start();
                          print_r($object);
                          $content = htmlentities(ob_get_contents());
                          ob_end_clean();
                          print '<pre>'.$content.'</pre>';
                        }
                        print '</div>';
                      }
                    }   
}