function run()
{
$debug = array();
$ipn = new paypal_ipn($this->app->config->paypal_email, 0);
$payments = $this->app->loadClass('paypalpayments');
$users = $this->app->loadClass('users');
$config = $this->app->config;
// 1) Check it is a valid paypal ipn post...
if ($ipn->process() == true) {
// 2) check that the payment has been made to us
if ($ipn->data['receiver_email'] == $config->paypal_email || $ipn->data['receiver_email'] == $config->paypal_account_email) {
$debug[] = "Business checked ok...\n";
// 3) check that payment made by a valid user (and get that user)
$username = $ipn->data['item_number'];
$user = $users->getuser(array('username' => $username));
if ($user) {
$debug[] = "Got User<br />\n";
// 4a) Handle subscription signup notifications...
if ($ipn->data['txn_type'] == 'subscr_signup') {
$debug[] = "Signup notification<br />\n";
// i) if user doesn't already have this subscription id, check that the months and price is valid and update user...
if ($ipn->data['subscr_id'] != $user->sub_id) {
$months = 0;
if (preg_match('/^([0-9]+).*?m/i', $ipn->data['period3'], $match)) {
$months = (int) $match[1];
}
$amount = (double) $ipn->data['amount3'];
if (in_array($months, array(1, 3, 6, 12))) {
$avar = 'price_' . $months;
$realprice = $config->{$avar};
if ($realprice == $amount) {
$ups = array('sub_id' => $ipn->data['subscr_id'], 'sub_months' => $months, 'sub_amount' => $amount);
$users->updateusers(array($user->user_id), $ups);
}
}
}
$debug[] = "Signup notification processed...<br />";
} elseif ($ipn->data['txn_type'] == 'subscr_payment') {
$debug[] = "Subscription payment<br />";
// i) check that the payment is complete
if ($ipn->isComplete()) {
$debug[] = "Status is complete<br />\n";
// ii) check that the currency is correct...
if ($ipn->data['mc_currency'] == 'USD') {
$debug[] = "currency ok<br />";
// iii) check that the price / duration is valid - first see if the user has these values set...
$valid = false;
$amount = (double) $ipn->data['mc_gross'];
$months = 0;
if ($user->sub_id != '' && $user->sub_id == $ipn->data['subscr_id']) {
if ($user->sub_amount != 0 && $user->sub_amount == $amount) {
$months = $user->sub_months;
$valid = true;
}
}
// couldn't validate payment against user, so check our plans instead...
if (!$valid) {
if ($config->price_1 == $amount) {
$months = 1;
} elseif ($config->price_3 == $amount) {
$months = 3;
} elseif ($config->price_6 == $amount) {
$months = 6;
} elseif ($config->price_12 == $amount) {
$months = 12;
}
if ($months != 0) {
$valid = true;
}
}
// if everything so far is valid, continue
if ($valid) {
$debug[] = "Valid Payment<br />";
// confirm this isn't a duplicate payment...
if (!$payments->getpayments(array('count' => true, 'txnid' => $ipn->data['txn_id']))) {
$debug[] = "Not a duplicate<br />";
// add this payment to the database
$pid = $payments->addpayment($ipn->data['txn_id'], $ipn->data['subscr_id'], $user->user_id, $ipn->data['payer_email'], $ipn->data['mc_gross'], 1, $ipn->data);
if ($pid) {
$debug[] = "Payment added<br />\n";
// set the user to "paid account" and extend their days of paid
$users->upgradeuser($user, $months, $ipn);
// if we are sending upgrade confirmation emails, send 1 :)
$debug[] = "Payment added OK!";
}
// end payment inserted ok
} else {
// end no duplicate payment
$debug[] = "Duplicate payment\n";
}
} else {
// end everything is valid
$debug[] = "Everything is not valid\n";
}
} else {
// end currency ok
$debug[] = "Wrong currency\n";
}
} else {
// end complete
$debug[] = "Payment is not complete.";
}
} else {
// end payment type check
$debug[] = "Payment type is wrong\n";
}
} else {
// end user check
$debug[] = "User doesn't exist.\n";
}
} else {
// end business check
$debug[] = "Receiver email (" . $ipn->data['receiver_email'] . " != {$config->paypal_email}\n";
}
} else {
$debug[] = "No bloody ipn.";
switch ($ipn->error_code) {
case ERR_INVALID:
break;
case ERR_SOCKETS:
break;
}
}
print_r($debug);
exit;
}
