/builder2/elements/pix_mail/paypal_ipn.php
PHP | 187 lines | 145 code | 17 blank | 25 comment | 20 complexity | dc65a8258de3712ba5d6ef0b756b911d MD5 | raw file
- <?php
- // FLATPACK - Paypal forms ipn emails notifications
- // By PixFort
- // http://pixfort.com
- // Copyright PixFort 2016
- // CONFIG: Enable debug mode. This means we'll log requests into 'ipn.log' in the same directory.
- // Especially useful if you encounter network errors or other intermittent problems with IPN (validation).
- // Set this to 0 once you go live or don't require logging.
- define("DEBUG", 1);
- // Set to 0 once you're ready to go live
- define("USE_SANDBOX", 1);
- define("LOG_FILE", "./ipn.log");
- include("config.php");
- $subject = "FLATPACK PayPal Form Notification";
- // Read POST data
- // reading posted data 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";
- }
- // Post IPN data back to PayPal to validate the IPN data is genuine
- // Without this step anyone can fake IPN data
- if(USE_SANDBOX == true) {
- $paypal_url = "https://www.sandbox.paypal.com/cgi-bin/webscr";
- } else {
- $paypal_url = "https://www.paypal.com/cgi-bin/webscr";
- }
- $ch = curl_init($paypal_url);
- if ($ch == FALSE) {
- return FALSE;
- }
- curl_setopt($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_SSLVERSION, 4);
- // curl_setopt($ch, CURLOPT_SSL_CIPHER_LIST, "TLSv1");
- curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1);
- curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
- curl_setopt($ch, CURLOPT_FORBID_REUSE, 1);
- if(DEBUG == true) {
- curl_setopt($ch, CURLOPT_HEADER, 1);
- curl_setopt($ch, CURLINFO_HEADER_OUT, 1);
- }
- // CONFIG: Optional proxy configuration
- //curl_setopt($ch, CURLOPT_PROXY, $proxy);
- //curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
- // Set TCP timeout to 30 seconds
- curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
- curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: Close'));
- // CONFIG: Please download 'cacert.pem' from "http://curl.haxx.se/docs/caextract.html" and set the directory path
- // of the certificate as shown below. Ensure the file is readable by the webserver.
- // This is mandatory for some environments.
- //$cert = __DIR__ . "./cacert.pem";
- //curl_setopt($ch, CURLOPT_CAINFO, $cert);
- $res = curl_exec($ch);
- error_log(date('[Y-m-d H:i e] '). "HTTP request of validation request:". curl_getinfo($ch, CURLINFO_HEADER_OUT) ." for IPN payload: $req" . PHP_EOL, 3, LOG_FILE);
- error_log(date('[Y-m-d H:i e] '). "HTTP response of validation request: $res" . PHP_EOL, 3, LOG_FILE);
- if (curl_errno($ch) != 0) // cURL error
- {
- if(DEBUG == true) {
- error_log(date('[Y-m-d H:i e] '). "Can't connect to PayPal to validate IPN message: " . curl_error($ch) . PHP_EOL, 3, LOG_FILE);
- }
- curl_close($ch);
- exit;
- } else {
- // Log the entire HTTP response if debug is switched on.
- if(DEBUG == true) {
- error_log(date('[Y-m-d H:i e] '). "HTTP request of validation request:". curl_getinfo($ch, CURLINFO_HEADER_OUT) ." for IPN payload: $req" . PHP_EOL, 3, LOG_FILE);
- error_log(date('[Y-m-d H:i e] '). "HTTP response of validation request: $res" . PHP_EOL, 3, LOG_FILE);
- }
- curl_close($ch);
- }
- // Inspect IPN validation result and act accordingly
- // Split response headers and payload, a better way for strcmp
- $tokens = explode("\r\n\r\n", trim($res));
- $res = trim(end($tokens));
- 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 PayPal email
- // check that payment_amount/payment_currency are correct
- // process payment and mark item as paid.
- // 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'];
- $payer_fname = $_POST['first_name'];
- $payer_lname = $_POST['last_name'];
- if($receiver_email){$to_Email=$receiver_email;}
- $msg_header = "Thank you for your purchase.<br>";
- $final_msg = "Item Name : " . $item_name . "<br>";
- $final_msg .= "Item Number : " . $item_number . "<br>";
- $final_msg .= "Payment status : " . $payment_status . "<br>";
- $final_msg .= "Payment amount : " . $payment_amount . "<br>";
- $final_msg .= "Payment currency : " . $payment_currency . "<br>";
- $final_msg .= "txn_id : " . $txn_id . "<br>";
- $final_msg .= "Receiver email : " . $receiver_email . "<br>";
- $final_msg .= "Payer email : " . $payer_email . "<br>";
- $final_msg .= "Payer First Name : " . $payer_fname . "<br>";
- $final_msg .= "Payer First Name : " . $payer_lname . "<br>";
- $final_msg .= "<br>---------------------------------------------------<br>";
- $msg_footer = "Paypal Payment Form by PixFort<br>";
- $msg_footer .= "Envato: http://themeforest.net/user/pixfort<br>";
- $msg_footer .= "Website: http://pixfort.com<br>";
- $headers = 'From: '.$to_Email.'' . "\r\n" .
- 'Reply-To: '.$to_Email.'' . "\r\n" .
- 'X-Mailer: PHP/' . phpversion().'' . "\r\n" .
- "Content-Type: text/html;charset=utf-8";
-
- $seller_msg = $final_msg . $msg_footer;
- $buyer_msg = $msg_header . $final_msg;
- // send mail
- $sentMail1 = @mail($to_Email, $subject, $seller_msg, $headers);
- $sentMail2 = @mail($payer_email, $subject, $buyer_msg, $headers);
- if(!$sentMail1) {
- error_log(date('[Y-m-d H:i e] '). "PixFort Notification sentMail1 send failed". PHP_EOL, 3, LOG_FILE);
- }else{
- error_log(date('[Y-m-d H:i e] '). "PixFort Notification sentMail1 sent successfully". PHP_EOL, 3, LOG_FILE);
- }
- if(!$sentMail2) {
- error_log(date('[Y-m-d H:i e] '). "PixFort Notification sentMail2 send failed". PHP_EOL, 3, LOG_FILE);
- }else{
- error_log(date('[Y-m-d H:i e] '). "PixFort Notification sentMail2 sent successfully". PHP_EOL, 3, LOG_FILE);
- }
-
- if(DEBUG == true) {
- error_log(date('[Y-m-d H:i e] '). "Verified IPN: $req ". PHP_EOL, 3, LOG_FILE);
- }
- } else if (strcmp ($res, "INVALID") == 0) {
- // log for manual investigation
- // Add business logic here which deals with invalid IPN messages
- if(DEBUG == true) {
- error_log(date('[Y-m-d H:i e] '). "Invalid IPN: $req" . PHP_EOL, 3, LOG_FILE);
- }
- }
- ?>