ipn.php

<?php
// Author: Monnier Antoine
// 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)."


/////////////////////////////////////////////////
/////////////Begin Script below./////////////////
/////////////////////////////////////////////////

include('config.php');




// 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/1.1\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";

    $header .= "Host: www.sandbox.paypal.com\r\n";  // www.paypal.com for a live site

$header .= "Content-Length: " . strlen($req) . "\r\n";
$header .= "Connection: close\r\n\r\n";

// If testing on Sandbox use:
if($DBsandbox)
{
    $fp = fsockopen ('ssl://www.sandbox.paypal.com', 443, $errno, $errstr, 30);
}
else
{
    $fp = fsockopen ('ssl://www.paypal.com', 443, $errno, $errstr, 30);
}


// assign posted variables to local variables
$item_name = $_POST['item_name'];
$business = $_POST['business'];
$item_number = $_POST['item_number'];
$payment_status = $_POST['payment_status'];
$mc_gross = $_POST['mc_gross'];
$payment_currency = $_POST['mc_currency'];
$txn_id = $_POST['txn_id'];
$receiver_email = $_POST['receiver_email'];
$receiver_id = $_POST['receiver_id'];
$quantity = $_POST['quantity'];
$num_cart_items = $_POST['num_cart_items'];
$payment_date = $_POST['payment_date'];
$first_name = $_POST['first_name'];
$last_name = $_POST['last_name'];
$payment_type = $_POST['payment_type'];
$payment_status = $_POST['payment_status'];
$payment_gross = $_POST['payment_gross'];
$payment_fee = $_POST['payment_fee'];
$settle_amount = $_POST['settle_amount'];
$memo = $_POST['memo'];
$payer_email = $_POST['payer_email'];
$txn_type = $_POST['txn_type'];
$payer_status = $_POST['payer_status'];
$address_street = $_POST['address_street'];
$address_city = $_POST['address_city'];
$address_state = $_POST['address_state'];
$address_zip = $_POST['address_zip'];
$address_country = $_POST['address_country'];
$address_status = $_POST['address_status'];
$item_number = $_POST['item_number'];
$tax = $_POST['tax'];
$option_name1 = $_POST['option_name1'];
$option_selection1 = $_POST['option_selection1'];
$option_name2 = $_POST['option_name2'];
$option_selection2 = $_POST['option_selection2'];
$for_auction = $_POST['for_auction'];
$invoice = $_POST['invoice'];
$custom = $_POST['custom'];
$notify_version = $_POST['notify_version'];
$verify_sign = $_POST['verify_sign'];
$payer_business_name = $_POST['payer_business_name'];
$payer_id =$_POST['payer_id'];
$mc_currency = $_POST['mc_currency'];
$mc_fee = $_POST['mc_fee'];
$exchange_rate = $_POST['exchange_rate'];
$settle_currency  = $_POST['settle_currency'];
$parent_txn_id  = $_POST['parent_txn_id'];
$pending_reason = $_POST['pending_reason'];
$reason_code = $_POST['reason_code'];


// subscription specific vars

$subscr_id = $_POST['subscr_id'];
$subscr_date = $_POST['subscr_date'];
$subscr_effective  = $_POST['subscr_effective'];
$period1 = $_POST['period1'];
$period2 = $_POST['period2'];
$period3 = $_POST['period3'];
$amount1 = $_POST['amount1'];
$amount2 = $_POST['amount2'];
$amount3 = $_POST['amount3'];
$mc_amount1 = $_POST['mc_amount1'];
$mc_amount2 = $_POST['mc_amount2'];
$mc_amount3 = $_POST['mcamount3'];
$recurring = $_POST['recurring'];
$reattempt = $_POST['reattempt'];
$retry_at = $_POST['retry_at'];
$recur_times = $_POST['recur_times'];
$username = $_POST['username'];
$password = $_POST['password'];

//auction specific vars

$for_auction = $_POST['for_auction'];
$auction_closing_date  = $_POST['auction_closing_date'];
$auction_multi_item  = $_POST['auction_multi_item'];
$auction_buyer_id  = $_POST['auction_buyer_id'];


if (!$fp || $receiver_email!=$checkReciverEmail)
{
    
}
else
{
    
    fputs ($fp, $header . $req);
    $found=false;
    while (!feof($fp) && !$found) 
    {
        
        $res = fgets ($fp, 1024);
        
        
        if (stripos($res, "VERIFIED") !== false)
        {
        
            $found=true;
            
            //create MySQL connection
            $Connect = @mysql_connect($DB_Server, $DB_Username, $DB_Password)
            or die("Couldn't connect to MySQL:<br>" . mysql_error() . "<br>" . mysql_errno());
            
            
            //select database
            $Db = @mysql_select_db($DB_DBName, $Connect)
            or die("Couldn't select database:<br>" . mysql_error(). "<br>" . mysql_errno());
            
            
            $fecha = date("m")."/".date("d")."/".date("Y");
            $fecha = date("Y").date("m").date("d");
            
        
            
            //execute query
        
        
            if ($txn_type == "cart")
            {
                
            }
            else
            {
                
                $sandbox="true";
                
                if($DBsandbox)
                {
                    $sandbox="true";
                }
                else
                {
                    $sandbox="false";
                }
                
                
                
                $strQuery="INSERT INTO donations (username, amount, date, processed, sandbox, first_name, last_name, payer_email, expires, expired, canGet)";
                $strQuery.=" VALUES ('".$custom."','".$mc_gross."','".$payment_date."','false','".$sandbox."','".$first_name."','".$last_name."','".$payer_email."','null','false',1);";
                 
            
                $result=mysql_query($strQuery);
            
                
            }
        
            
            // send an email in any case
            echo "Verified";
            mail($notify_email, "VERIFIED IPN", "$res\n $req\n $strQuery\n $struery\n  $strQuery2");
        
        
        }
        
        // if the IPN POST was 'INVALID'...do this
        
        
        else if (stripos($res, "INVALID") !== false)
        {
                $found=true;
            // log for manual investigation
            
            mail($notify_email, "INVALID IPN", "$res\n $req");
        }
    }    
    fclose ($fp);
}

?>