Получить cookies из браузера: перевести код с JS

pkcs1pad2: function($data, $keysize) {
        if($keysize < $data.length + 11)
            return null;
        var $buffer = [];
        var $i = $data.length - 1;
        while($i >= 0 && $keysize > 0)
            $buffer[--$keysize] = $data.charCodeAt($i--);
        $buffer[--$keysize] = 0;
        while($keysize > 2)
            $buffer[--$keysize] = Math.floor(Math.random()*254) + 1;
        $buffer[--$keysize] = 2;
        $buffer[--$keysize] = 0;
        return new BigInteger($buffer);
    }

var $buffer = [];

function OnRSAKeyResponse( transport )
{
    var results = transport.responseJSON;
    if ( results.publickey_mod && results.publickey_exp && results.timestamp )
    {
        var form = document.forms['logon'];
 
        var pubKey = RSA.getPublicKey( results.publickey_mod, results.publickey_exp );
        var encryptedPassword = RSA.encrypt( form.elements['password'].value, pubKey );
        new Ajax.Request( 'https://store.steampowered.com:443/login/dologin/',
        {
            method: 'post',
            parameters: {
                username: form.elements['username'].value,
                password: encryptedPassword,
                emailauth: form.elements['emailauth'].value,
                captchagid: form.elements['captchagid'].value,
                captcha_text: form.elements['captcha_text'].value,
                emailsteamid: form.elements['emailsteamid'].value,
                rsatimestamp: results.timestamp,
                remember_login: form.elements['remember_login'] && form.elements['remember_login'].checked
            },
            onSuccess: OnLoginResponse,
            onException: function( req, e ) { throw e; }
        }
        );
    }
    else //...

{"success":true,"login_complete":true,"transfer_url":"https:\/\/steamcommunity.com\/login\/transfer","transfer_parameters":{"steamid":"76561198073193161","token":"D0B4D598C09DB85C27D174D1ADDB73592078C310","remember_login":false}}

function TransferLogin( url, parameters)
{
    if ( g_bLoginTransferInProgress )
        return;
    g_bLoginTransferInProgress = true;
    
    var iframe = new Element( 'iframe', {id: 'transfer_iframe' } );
    iframe.hide();
    $(document.body).appendChild( iframe );
    
    var doc = iframe.contentWindow.document;
    doc.open();
    doc.write( '<form method="POST" action="' + url + '" name="transfer_form">' );
    for ( var param in parameters )
    {
        doc.write( '<input type="hidden" name="' + param + '" value="' + parameters[param] + '">' );
    }
    doc.write( '</form>' );
    doc.write( '<script>window.onload = function(){ document.forms["transfer_form"].submit(); }</script>' );
    doc.close();
    
    // firefox fires the onload event twice
    var cLoadCount = Prototype.Browser.Gecko ? 2 : 1;
    
    Event.observe( iframe, 'load', function( event ) { if ( --cLoadCount == 0 ) OnTransferComplete() } );
    Event.observe( iframe, 'error', function( event ) { OnTransferComplete(); } );
    
    // after 10 seconds, give up on waiting for transfer
    window.setTimeout( OnTransferComplete, 10000 );
}
 
function OnTransferComplete()
{
    if ( !g_bLoginTransferInProgress )
        return;
    g_bLoginTransferInProgress = false;
    if ( !g_bInEmailAuthProcess )
        LoginComplete();
    else if ( g_bEmailAuthSuccessfulWantToLeave )
        LoginComplete();
}
 
function LoginComplete()
{
    if ( $('openidForm') )
        $('openidForm').submit();
    else
        window.location = document.forms['logon'].elements['redir'].value;
}