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
  #Apache::Session works well for this
  #print button to the browser
  #note, button is a CGI form, 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 = new CGI;
  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 = new CGI;
  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:

id

  - The Business::PayPal object id, if not specified a new 
    id will be created using md5_hex(rand())

address

  - The address of PayPal's payment server, currently:
    https://www.paypal.com/cgi-bin/webscr

cert

  - The x509 certificate for I<address>, see source for default

certcontent

  - The contents of the x509 certificate I<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:

cmd

  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.

redirect_cmd

  required, defaults to '_xclick'
  This allows the user information to be pre-filled in.
  You should never need to specify this, as the default should 
  work fine.

button_image

  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.

business

  required, no default
  This is the name of your PayPal account.

item_name

  This is the name of the item you are selling.

item_number

  This is a numerical id of the item you are selling.

image_url

  A URL pointing to a 150 x 50 image which will be displayed 
  instead of the name of your PayPal account.

no_shipping

  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.

return

  This is the URL to which the customer will return to after 
  they have finished paying.

cancel_return

  This is the URL to which the customer will be sent if they cancel
  before paying.

no_note

  defaults to 1
  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_code

  Currency the payment should be taken in, e.g. EUR, GBP.
  If not specified payments default to USD.

address1

undefined_quantity

  defaults to 0
  If set to 0 the quantity defaults to 1, if set to 1 the user 
  can edit the quantity.

notify_url

  The URL to which PayPal Instant Payment Notification is sent.

first_name

  First name of customer, used to pre-fill PayPal forms.

last_name

  Last name of customer, used to pre-fill PayPal forms.

shipping

  I don't know, something to do with shipping, please tell me if
  you find out.

shipping2

  I don't know, something to do with shipping, please tell me if you
  find out.

quantity

  defaults to 1
  Number of items being sold.

amount

  Price of the item being sold.

address1

  Address of customer, used to pre-fill PayPal forms.

address2

  Address of customer, used to pre-fill PayPal forms.

city

  City of customer, used to pre-fill PayPal forms.

state

  State of customer, used to pre-fill PayPal forms.

zip

  Zip of customer, used to pre-fill PayPal forms.

night_phone_a

  Phone

night_phone_b

  Phone

night_phone_c

  Phone

day_phone_a

  Phone

day_phone_b

  Phone

day_phone_c

  Phone

receiver_email

  Email address of customer - I think

invoice

  Invoice number - I think

custom

  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.

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 :-) ).

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.