I got my IPN solution working by using a simple PHP script which takes
the IPN data and stores it out to a file with a unique filename. A LC
script then scans for these files and does what it needs to with the data.
This was only working in the simulator until I discovered that the
GoDaddy shopping cart was sending its own IPN url to PayPal, overriding
the PHP notification url I had specified there. I made a change in
GoDaddy and all is now working.
Here's the PHP script:
-----------------------------
<?php
// Revision Notes
// 11/04/11 - changed post back url from
https://www.paypal.com/cgi-bin/webscr to
https://ipnpb.paypal.com/cgi-bin/webscr
// For more info see below:
// https://www.x.com/content/bulletin-ip-address-expansion-paypal-services
// "ACTION REQUIRED: if you are using IPN (Instant Payment Notification)
for Order Management and your IPN listener script is behind a firewall
that uses ACL (Access Control List) rules which restrict outbound
traffic to a limited number of IP addresses, then you may need to do one
of the following:
// To continue posting back to https://www.paypal.com to perform IPN
validation you will need to update your firewall ACL to allow outbound
access to *any* IP address for the servers that host your IPN script
// OR Alternatively, you will need to modify your IPN script to post
back IPNs to the newly created URL https://ipnpb.paypal.com using HTTPS
(port 443) and update firewall ACL rules to allow outbound access to the
ipnpb.paypal.com IP ranges (see end of message)."
// 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";
// If testing on Sandbox use:
// $header .= "Host: www.sandbox.paypal.com:443\r\n";
$header .= "Host: ipnpb.paypal.com:443\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($req) . "\r\n\r\n";
// If testing on Sandbox use:
// $fp = fsockopen ('ssl://www.sandbox.paypal.com', 443, $errno,
$errstr, 30);
$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'];
$tempFileName = "dump" . rand(1000, 100000) . ".txt";
file_put_contents($tempFileName, print_r($_POST, true));
if (!$fp) {
// HTTP ERROR
} else {
fputs ($fp, $header . $req);
while (!feof($fp)) {
$res = fgets ($fp, 1024);
if (strcmp ($res, "VERIFIED") == 0) {
// check 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
$mail_From = "From: MyOrderEmailAddressGoesHere";
$mail_To = "rdmil...@together.net";
$mail_Subject = "VERIFIED IPN";
$mail_Body = $req;
foreach ($_POST as $key => $value){
$emailtext .= $key . " = " .$value ."\n\n";
}
mail($mail_To, $mail_Subject, $emailtext . "\n\n" . $mail_Body, $mail_From);
}
else if (strcmp ($res, "INVALID") == 0) {
// log for manual investigation
$mail_From = "From: MyOrderEmailAddressGoesHere";
$mail_To = "rdmil...@together.net";
$mail_Subject = "INVALID IPN";
$mail_Body = $req;
foreach ($_POST as $key => $value){
$emailtext .= $key . " = " .$value ."\n\n";
}
mail($mail_To, $mail_Subject, $emailtext . "\n\n" . $mail_Body, $mail_From);
}
}
fclose ($fp);
}
?>
----------------------------------------
On 5/2/2012 5:18 PM, J. Landman Gay wrote:
On 5/2/12 12:56 PM, Peter Haworth wrote:
Congrats on working through all this.
Slightly off topic but related. I assume you're doing this to send out
license codes or something similar.
Right, I'm trying to automate AirLaunch sales from my web site.
Zygodact makes the serial keys and I've finally got it working with
the PayPal "Buy Now" button I think.
At the time I was using the Mac Mail client and it lets you define rules
for identifying and processing incoming messages, including the
ability to
run an Applescript. I was able to cobble together an Applescript that
tracked down the mp3 file(s) that had been purchsed (using the PayPal
product codes) and send an automated reply to the purchaser with
download
link(s) to them.
What a good idea. It would come in handy for the LiveCode market place
sales, because those can't be automated with my registration system. I
still have to process those orders manually.
I don't use Apple Mail though. It would be great if Thunderbird could
automate a response. I wonder...
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