paypal_donations.ipn.inc in PayPal Donations 7

Handling the PayPal IPN callbacks

File

includes/paypal_donations.ipn.inc

<?php

/**
 * @file
 * Handling the PayPal IPN callbacks
 */

/**
 * IPN callback function().
 */
function paypal_donations__ipn_callback() {
  $paypal_host = variable_get('paypal_donations_service_url', 'www.sandbox.paypal.com');
  header("Content-type: text/html");
  header("Expires: Wed, 29 Jan 1975 04:15:00 GMT");
  header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
  header("Cache-Control: no-cache, must-revalidate");
  header("Pragma: no-cache");

  // 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}";
  }
  $header = '';

  // Post back to PayPal system to validate.
  $header .= "POST /cgi-bin/webscr HTTP/1.1\r\n";
  $header .= "Host: " . $paypal_host . "\r\n";
  $header .= "Content-Type: application/x-www-form-urlencoded\r\n";
  $header .= "Content-Length: " . strlen($req) . "\r\n\r\n";
  $fp = fsockopen('ssl://' . $paypal_host, 443, $errno, $errstr, 30);
  if (!$fp) {
    watchdog('paypal', 'HTTP error');
  }
  else {
    fwrite($fp, $header . $req);
    watchdog('paypal', $header . $req);
    while (!feof($fp)) {
      $res = fgets($fp, 64);
      if (trim($res) == "VERIFIED") {
        global $user;
        if (!empty($_POST['txn_id'])) {
          if ($_POST['txn_type'] == 'web_accept') {
            $donation_type = 'single';
          }
          elseif ($_POST['txn_type'] == 'subscr_payment') {
            $donation_type = 'recurring';
          }
          $query = new EntityFieldQuery();
          $query
            ->entityCondition('entity_type', 'paypal_donations_item');
          $query
            ->fieldCondition('field_paypal_transaction_id', 'value', $_POST['txn_id'], '=');
          $count = $query
            ->count()
            ->execute();
          if ($count < 1) {
            $entity = new stdClass();
            $entity->field_paypal_transaction_id[LANGUAGE_NONE][0]['value'] = $_POST['txn_id'];
            $entity->field_paypal_donator_email[LANGUAGE_NONE][0]['value'] = $_POST['payer_email'];
            $entity->field_paypal_donations_amount[LANGUAGE_NONE][0]['value'] = $_POST['mc_gross'];
            $entity->field_paypal_donator_name[LANGUAGE_NONE][0]['value'] = $_POST['first_name'] . " " . $_POST['last_name'];
            $entity->field_paypal_donator_country[LANGUAGE_NONE][0]['value'] = $_POST['address_country'];
            $entity->field_paypal_donations_type[LANGUAGE_NONE][0]['value'] = $donation_type;
            $entity->created = time();
            entity_save('paypal_donations_item', $entity);
            module_invoke_all("paypal_donations_made", $entity, $_POST);
            watchdog('paypal', 'Paypal payment received with transaction id @txn_id.', array(
              '@txn_id' => $_POST['txn_id'],
            ), WATCHDOG_NOTICE);
            drupal_mail('paypal_donations', 'payer_confirmation', $_POST['payer_email'], user_preferred_language($user), array(
              'first_name' => $_POST['first_name'],
              'amount' => $_POST['mc_gross'],
              'donation_type' => $donation_type,
            ));
            drupal_mail('paypal_donations', 'admin_confirmation', $_POST['receiver_email'], user_preferred_language($user), array(
              'name' => $_POST['first_name'] . " " . $_POST['last_name'],
              'amount' => $_POST['mc_gross'],
            ));
          }
        }
      }
    }
    fclose($fp);
  }
  die;
}

Functions

Name	Description
paypal_donations__ipn_callback	IPN callback function().