IPN SCRIPT

<?php
header('Content-type: text/html; charset=utf-8');
?>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<?php
// tell PHP to log errors to ipn_errors.log in this directory
ini_set('log_errors', true);
ini_set('error_log', dirname(__FILE__).'/ipn_errors.log');

// intantiate the IPN listener
include('ipnlistener.php');
$listener = new IpnListener();

// For sandbox testing
//$pp_hostname = "www.sandbox.paypal.com";

//live
$pp_hostname = "www.paypal.com";

// tell the IPN listener to use the PayPal test sandbox
//$listener->use_sandbox = true;

// try to process the IPN POST
try {
    $listener->requirePostMethod();
    $verified = $listener->processIpn();
} catch (Exception $e) {
    error_log($e->getMessage());
    exit(0);
}

if ($verified) {
    $errmsg = '';   // stores errors from fraud checks

    // 1. Make sure the payment status is "Completed"
    if ($_POST['payment_status'] != 'Completed') {
        // simply ignore any IPN that is not completed
        exit(0);
    }

    // 2. Make sure seller email matches your primary account email.
    if ($_POST['receiver_email'] != 'anna@energyshop.se') {
        $errmsg .= "'receiver_email' does not match: ";
        $errmsg .= $_POST['receiver_email']."\n";
    }

    // 3. Make sure the currency code matches
    if ($_POST['mc_currency'] != 'SEK' && $_POST['mc_currency'] != 'USD') {
        $errmsg .= "'mc_currency' does not match: ";
        $errmsg .= $_POST['mc_currency']."\n";
    }

    // 4. Ensure the transaction is not a duplicate.
    mysql_connect('energyshop.se.mysql', 'energyshop_se', 'dxymNrJd') or exit(0);
    mysql_select_db('energyshop_se') or exit(0);

    $txn_id = mysql_real_escape_string($_POST['txn_id']);
    $sql = "SELECT COUNT(*) FROM orders WHERE txn_id = '$txn_id'";
    $r = mysql_query($sql);

    if (!$r) {
        error_log(mysql_error());
        exit(0);
    }

    $exists = mysql_result($r, 0);
    mysql_free_result($r);

    if ($exists) {
        $errmsg .= "'txn_id' has already been processed: ".$_POST['txn_id']."\n";
    }

    if (!empty($errmsg)) {

        // manually investigate errors from the fraud checking
        $body = "IPN failed fraud checks: \n$errmsg\n\n";
        $body .= $listener->getTextReport();
        mail('anna@energyshop.se', 'IPN Fraud Warning', $body);

    } else {

    // add this order to a table of completed orders
    $payer_email = mysql_real_escape_string($_POST['payer_email']);
    $mc_gross = mysql_real_escape_string($_POST['mc_gross']);
    $sql = "INSERT INTO orders VALUES
            (NULL, '$txn_id', '$payer_email', $mc_gross)";

    if (!mysql_query($sql)) {
        error_log(mysql_error());
        exit(0);
    }}}
// STEP 1: Read POST data

// reading posted data from directly from $_POST causes serialization
// issues with array data in POST
// reading raw POST data from input stream instead.
$raw_post_data = file_get_contents('php://input');
$raw_post_array = explode('&', $raw_post_data);
$myPost = array();
foreach ($raw_post_array as $keyval) {
  $keyval = explode ('=', $keyval);
  if (count($keyval) == 2)
     $myPost[$keyval[0]] = urldecode($keyval[1]);
}
// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-validate';
if(function_exists('get_magic_quotes_gpc')) {
   $get_magic_quotes_exists = true;
}
foreach ($myPost as $key => $value) {
   if($get_magic_quotes_exists == true && get_magic_quotes_gpc() == 1) {
        $value = urlencode(stripslashes($value));
   } else {
        $value = urlencode($value);
   }
   $req .= "&$key=$value";
}


// STEP 2: Post IPN data back to paypal to validate

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://www.paypal.com/cgi-bin/webscr");
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $req);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_FORBID_REUSE, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: Close'));

// In wamp like environments that do not come bundled with root authority certificates,
// please download 'cacert.pem' from "http://curl.haxx.se/docs/caextract.html" and set the directory path
// of the certificate as shown below.
// curl_setopt($ch, CURLOPT_CAINFO, dirname(__FILE__) . '/cacert.pem');
if( !($res = curl_exec($ch)) ) {
    error_log("Got " . curl_error($ch) . " when processing IPN data");
    curl_close($ch);
    exit;
}
curl_close($ch);


// STEP 3: Inspect IPN validation result and act accordingly

if (strcmp ($res, "VERIFIED") == 0) {
    // check whether the payment_status is Completed
    // check that txn_id has not been previously processed
    // check that receiver_email is your Primary PayPal email
    // check that payment_amount/payment_currency are correct
    // process payment

    // 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'];

     // send user an email with a confirmation
    $h1 = 0;
    $h2 = 0;
    $h3 = 0;
    $h4 = 0;
    $h5 = 0;
    $h6 = 0;
    $h7 = 0;
    $h8 = 0;
    $h9 = 0;
    $h10 = 0;
    $h11 = 0;
    $h12 = 0;
    $h13 = 0;
    $h14 = 0;
    $h15 = 0;
    $h16 = 0;
    $h17 = 0;
    $h18 = 0;
    $h19 = 0;
    $h20 = 0;
    $h21 = 0;
    $h22 = 0;
    $h23 = 0;
    $h24 = 0;
    $h25 = 0;
    $h26 = 0;
    $h27 = 0;
    $h28 = 0;
    $h29 = 0;
    $h30 = 0;
    $h31 = 0;
    $num = $_POST['num_cart_items'];
    $amount = $_POST['mc_gross'];
    $firstname = $_POST['first_name'];
    $lastname = $_POST['last_name'];
    $to = filter_var($_POST['payer_email'], FILTER_SANITIZE_EMAIL);
    $to2 = filter_var('anna@energyshop.se', FILTER_SANITIZE_EMAIL);
    $date = date('Y-m-d');
    $name = $_POST['item_name'];
    $subject = "Tack för Ert köp! / Thank you for your order!";
    $subject2 = "(COPY) Tack för Ert köp! / Thank you for your order!";
    $headerFields = array(
    'Date: ' . date('r', $_SERVER['REQUEST_TIME']),
    "Subject: =?UTF-8?Q?".imap_8bit($subject)."?=",
    "From: {$to}",
    "MIME-Version: 1.0",
    "Content-Type: text/html;charset=utf-8"
    );
    $headerFields2 = array(
    'Date: ' . date('r', $_SERVER['REQUEST_TIME']),
    "Subject: =?UTF-8?Q?".imap_8bit($subject2)."?=",
    "From: {$to}",
    "MIME-Version: 1.0",
    "Content-Type: text/html;charset=utf-8"
    );
    $message = '<html><body>';
    $message .= "$firstname $lastname, $payer_email \r\n";
    $message .= '<br />';
    $message .= "Tack för din beställning från energyshop.se. $date";
    $message .= '<br>';
    $message .= "Vi hoppas att varorna motsvarar dina förväntningar! \r\n";
    $message .= '<br />';
    $message .= "Du köpte $num produkter för totalt $amount kronor.";
    $message .= '<br>';
    $message .= 'Varor:';
    $message .= "$name";
    $message .= '<br>';
    $message .= 'Moms är inkluderad i priset:';
    $message .= '<br>';
    $message .= "6% moms Böcker, 12% moms EnergyUnion, 25% moms på övriga sortimentet \r\n";
    $message .= '<br />';
    $message .= 'Har du köpt digitala varor, ska du direkt efter betalningen fått tillgång till en sida där du laddar ned din beställning.';
    $message .= '<br>';
    $message .= "Har du köpt fysiska varor, skickas de till dig så snart som möjligt med Posten, dock senast en vecka efter din beställning.\r\n";
    $message .= '<br />';
    $message .= 'Vi på energyshop.se önskar dig en trevlig dag.';
    $message .= '<br>';
    $message .= 'Välkommen tillbaka när du vill!';
    $message .= '</body></html>';

    $message2 = "$message";
    $message2 .= '<br />';
    $message2 .= '(NOTE: THIS IS A COPY)';

    mail($to, $subject, $message,  implode("\r\n", $headerFields));
    mail('anna@energyshop.se', $subject2, $message2,  implode("\r\n", $headerFields2));
    }
     else {
    // log for manual investigation
    mail('anna@energyshop.se', 'Invalid IPN', $listener->getTextReport());
}
?>