Business::PayPal - Perl extension for automating PayPal transactions
Business::PayPal makes the automation of PayPal transactions as simple as doing credit card transactions through a regular processor. It includes methods for creating PayPal buttons and for validating the Instant Payment Notification that is sent when PayPal processes a payment.
To generate a PayPal button for use on your site Include something like the following in your CGI
use Business::PayPal; my $paypal = Business::PayPal->new; my $button = $paypal->button( business => 'dr@dursec.com', item_name => 'CanSecWest Registration Example', return => 'http://www.cansecwest.com/return.cgi', cancel_return => 'http://www.cansecwest.com/cancel.cgi', amount => '1600.00', quantity => 1, notify_url => http://www.cansecwest.com/ipn.cgi ); my $id = $paypal->id;
Store $id somewhere so we can get it back again later
Store current context with $id.
Print button to the browser.
Note, button is an HTML form, already enclosed in <form></form> tags
To validate the Instant Payment Notification from PayPal for the button used above include something like the following in your 'notify_url' CGI.
use CGI; my $query = CGI->new; my %query = $query->Vars; my $id = $query{custom}; my $paypal = Business::PayPal->new(id => $id); my ($txnstatus, $reason) = $paypal->ipnvalidate(\%query); die "PayPal failed: $reason" unless $txnstatus; my $money = $query{payment_gross}; my $paystatus = $query{payment_status};
check if paystatus eq 'Completed' check if $money is the ammount you expected save payment status information to store as $id
To tell the user if their payment succeeded or not, use something like the following in the CGI pointed to by the 'return' parameter in your PayPal button.
use CGI; my $query = CGI->new; my $id = $query{custom}; #get payment status from store for $id #return payment status to customer
Creates a new Business::PayPal object, it can take the following parameters:
The Business::PayPal object id, if not specified a new id will be created using md5_hex(rand())
The address of PayPal's payment server, currently: https://www.paypal.com/cgi-bin/webscr
The x509 certificate for address, see source for default
The contents of the x509 certificate cert, see source for default
Returns the id for the Business::PayPal object.
Returns the HTML for a PayPal button. It takes a large number of parameters, which control the look and function of the button, some of which are required and some of which have defaults. They are as follows:
required, defaults to '_ext-enter'
This allows the user information to be pre-filled in. You should never need to specify this, as the default should work fine.
required, defaults to '_xclick'
required, defaults to:
CGI::image_button(-name => 'submit', -src => 'http://images.paypal.com/x-click-but01.gif' -alt => 'Make payments with PayPal', )
You may wish to change this if the button is on an https page so as to avoid the browser warnings about insecure content on a secure page.
required, no default
This is the name of your PayPal account.
This is the name of the item you are selling.
This is a numerical id of the item you are selling.
A URL pointing to a 150 x 50 image which will be displayed instead of the name of your PayPal account.
defaults to 1
If set to 1, does not ask customer for shipping info, if set to 0 the customer will be prompted for shipping information.
This is the URL to which the customer will return to after they have finished paying.
This is the URL to which the customer will be sent if they cancel before paying.
If set to 1, does not ask customer for a note with the payment, if set to 0, the customer will be asked to include a note.
Currency the payment should be taken in, e.g. EUR, GBP. If not specified payments default to USD.
defaults to 0
If set to 0 the quantity defaults to 1, if set to 1 the user can edit the quantity.
The URL to which PayPal Instant Payment Notification is sent.
First name of customer, used to pre-fill PayPal forms.
Last name of customer, used to pre-fill PayPal forms.
I don't know, something to do with shipping, please tell me if you find out.
Number of items being sold.
Price of the item being sold.
Address of customer, used to pre-fill PayPal forms.
City of customer, used to pre-fill PayPal forms.
State of customer, used to pre-fill PayPal forms.
Zip of customer, used to pre-fill PayPal forms.
Phone
Email address of customer - I think
Invoice number - I think
defaults to the Business::PayPal id
Used by Business::PayPal to track which button is associated with which Instant Payment Notification.
Takes a reference to a hash of name value pairs, such as from a CGI query object, which should contain all the name value pairs which have been posted to the script by PayPal's Instant Payment Notification posts that data back to PayPal, checking if the ssl certificate matches, and returns success or failure, and the reason.
This method should not normally be used unless you need to test, or if you are overriding the behaviour of ipnvalidate. It takes a reference to a hash containing the query, posts to PayPal with the data, and returns success or failure, as well as PayPal's response.
Gabor Szabo, <gabor@szabgab.com>
phred, <fred@redhotpenguin.com>
mock, <mock@obscurity.org>
CGI, perl, Apache::Session.
https://www.cansecwest.com/register.cgi is currently using this module to do conference registrations. If you wish to see it working, just fill out the forms until you get to the PayPal button, click on the button, and then cancel before paying (or pay, and come to CanSecWest :-) ).
Explanation of the fields: http://www.paypalobjects.com/en_US/ebook/subscriptions/html.html See also in the pdf here: https://www.paypal.com/cgi-bin/webscr?cmd=p/xcl/rec/subscr-manual-outside
Copyright (c) 2010, phred <fred@redhotpenguin.com>. All rights reserved.
Copyright (c) 2002, mock <mock@obscurity.org>. All rights reserved.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
To install Business::PayPal, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Business::PayPal
CPAN shell
perl -MCPAN -e shell install Business::PayPal
For more information on module installation, please visit the detailed CPAN module installation guide.