<?php

//to init db
include 'class.php';
$class = new account($_GET['debug']);


// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-validate';

foreach ($_POST as $key => $value) {
    $value = urlencode(stripslashes($value));
    $req .= "&$key=$value";
}

// post back to PayPal system to validate
$header .= "POST /cgi-bin/webscr HTTP/1.0\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($req) . "\r\n\r\n";
$fp = fsockopen ('ssl://www.paypal.com', 443, $errno, $errstr, 30);

// assign posted variables to local variables
$item_name = $_POST['item_name'];
$item_number = $_POST['item_number'];
$payment_status = $_POST['payment_status'];
$payment_amount = $_POST['mc_gross'];
$payment_currency = $_POST['mc_currency'];
$txn_id = $_POST['txn_id'];
$receiver_email = $_POST['receiver_email'];
$payer_email = $_POST['payer_email'];

if (!$fp) {
    // HTTP ERROR
} else {
    fputs ($fp, $header . $req);
    while (!feof($fp)) {
    $res = fgets ($fp, 1024);
        if (strcmp ($res, "VERIFIED") == 0) {
            //Check if completed
            if($payment_status == "Completed"){
                if($payment_amount==$class->getCostForItem($item_name)&&$payment_currency=="CAD"){ //If valid
                    if($receiver_email==$class->getAdminEmail()){
                        $class->doActionForItem($item_name,$payer_email,$item_number);
                    }
                }
            }else{
                $class->doActionForFailedItem($item_name,$payer_email,$item_number);
            }
        }
        else if (strcmp ($res, "INVALID") == 0) {
            // log for manual investigation
        }
    }
    fclose ($fp);
}
?>