include_once 'classes/DataAccess.class.php';
include_once 'classes/PayPalMsgHandler.class.php';
include_once 'classes/Logger.class.php';
include_once 'classes/Constants.class.php';
$dataAccess = new DataAccess();
$loggerDataAccess = new DataAccess();
$logger = new Logger($loggerDataAccess);
$payPalMsgHandler = new PayPalMsgHandler();
$ipnData = $_POST;
$status = 500;
$url = Constants::$payPalProdButtonFormUrl;
if ($payPalMsgHandler->GetResponseValByKey($ipnData, 'test_ipn') == "1") {
$url = Constants::$payPalTestButtonFormUrl;
}
// Debugging: log what we received
//$logger->LogInfo("IPN Received. Post Data: " . $payPalMsgHandler->ConvertIPNPostDataToRawString($ipnData));
// For all instant notifications, must acknowledge as per PayPal requirement by sending a POST request containing the same data back to PayPal,
// but only need to take further action for subscription creation, subscription renewal, and subscription cancellation.
$response = $payPalMsgHandler->SendIPNPostRequest($ipnData, $url, $status);
if ($status == 200 && $response == "VERIFIED") {
// If this notification really came from PayPal, proceed to handle it and execute any necessary actions
$rawIpnMessage = $payPalMsgHandler->ConvertIPNPostDataToRawString($ipnData);
$notificationType = "IPN";
$payPalMsgHandler->HandlePayPalTxnResponse($ipnData, $rawIpnMessage, $dataAccess, $logger, $notificationType);
} else {
$txnId = "";
if (isset($ipnData["txn_id"])) {
$txnId = $ipnData["txn_id"];
}
$logger->LogError(sprintf("Received bad PayPal IPN message. Status=[%d]; Response=[%s]; txn ID=[%s]", $status, $response, $txnId));
}
if (isset($_GET['tx'])) {
$tx = filter_var($_GET['tx'], FILTER_SANITIZE_STRING);
if (strlen($tx) > 0) {
$replyMsg = PayPalTxnMsg::ConstructDefaultMsg();
$url = Constants::$isPayPalTest ? Constants::$payPalTestButtonFormUrl : Constants::$payPalProdButtonFormUrl;
$identityToken = Constants::$isPayPalTest ? Constants::$payPalTestPostIdentityToken : Constants::$payPalProdPostIdentityToken;
$status = 500;
$response = $payPalMsgHandler->SendPDTPostRequest($tx, $url, $status, $identityToken);
if ($status != 200 || strpos($response, 'SUCCESS') !== 0) {
$logger->LogError(sprintf("Received bad PayPal PDT message (status %d): %s", $status, $response));
throw new Exception("Unable to retrieve PDT transaction details.");
} else {
$txnDetailsAssociativeArray = $payPalMsgHandler->FormatPDTResponseInAssociativeArray($response);
$rawPdtMessage = urldecode($response);
$notificationType = "PDT";
$replyMsg = $payPalMsgHandler->HandlePayPalTxnResponse($txnDetailsAssociativeArray, $rawPdtMessage, $dataAccess, $logger, $notificationType);
}
// If IPN for this payment has already been received, will not have all txn info in this replyMsg.
// Must look up PayPalUsers entry for this payer ID, to determine if user is now premium.
if (!$replyMsg->IsTxnLogged) {
$payPalUser = $payPalMsgHandler->LookUpPayPalUser($replyMsg->PayerId, $replyMsg->SubscriptionID, $dataAccess, $logger, $notificationType);
if ($payPalUser->IsActive) {
$replyMsg->UserUpgradedPremium = true;
$replyMsg->UserMessage = "Subscription successfully created!";
}
}
// Redirect to AccountManagement page to report results to user
$sessionDataAccess = new DataAccess();
$sessionHandler = new DBSessionHandler($sessionDataAccess);
session_set_save_handler($sessionHandler, true);
session_start();
