NAME

       Vend::Payment::Linkpoint - Interchange Linkpoint Support

SYNOPSIS

           &charge=linkpoint

               or

           [charge mode=linkpoint param1=value1 param2=value2]

PREREQUISITES

           LPERL

DESCRIPTION

       The Vend::Payment::Linkpoint module implements the linkpoint() routine for use with
       Interchange. It is compatible on a call level with the other Interchange payment modules.

       To enable this module, place this directive in "interchange.cfg":

           Require module Vend::Payment::Linkpoint

       This must be in interchange.cfg or a file included from it.

       Make sure CreditCardAuto is off (default in Interchange demos).

       The mode can be named anything, but the "gateway" parameter must be set to "linkpoint". To
       make it the default payment gateway for all credit card transactions in a specific
       catalog, you can set in "catalog.cfg":

           Variable MV_PAYMENT_MODE linkpoint

       It uses several of the standard settings from Interchange payment. Any time we speak of a
       setting, it is obtained either first from the tag/call options, then from an Interchange
       order Route named for the mode, then finally a default global payment variable, For
       example, the "id" parameter would be specified by:

           [charge mode=linkpoint id=YourLinkpointID]

       or

           Route linkpoint id YourLinkpointID

       or

           Variable MV_PAYMENT_ID YourLinkpointID

       Required settings are "id" and "keyfile".

       The active settings are:

       host
           Your LinkPoint Secure Payment Gateway (LSPG) hostname. Usually secure.linkpt.net
           (production) or staging.linkpt.net (testing).

       keyfile
           File name of the merchant security certificate. This file should contain the RSA
           private key and the certificate, otherwise you get an error like "Unable to open/parse
           client certificate file."

       id  Store number assigned to your merchant account.

       transaction
           The type of transaction to be run. Valid values are:

               Interchange         Linkpoint
               ----------------    -----------------
                   auth            PREAUTH
                   sale            SALE
                   settle_prior    POSTAUTH

           Default is "sale".

       check_sub
           Name of a Sub or GlobalSub to be called after the result hash has been received from
           LinkPoint. A reference to the modifiable result hash is passed into the subroutine,
           and it should return true (in the Perl truth sense) if its checks were successful, or
           false if not.

           This can come in handy since LinkPoint has no option to decline a charge when AVS or
           CVV data come back negative.

           If you want to fail based on a bad AVS/CVV check, make sure you're only doing an auth
           -- not a sale, or your customers would get charged on orders that fail the AVS/CVV
           check and never get logged in your system!

           Add the parameters like this:

                   Route  linkpoint  check_sub  link_check

           This is a matching sample subroutine you could put in interchange.cfg:

                   GlobalSub <<EOR
                   sub link_check {
                           my ($result) = @_;
                           my $avs = $result->{r_avs};
                           my ($addr, $zip, $nothing, $cvv) = split m{}, $avs;
           #::logDebug("avs=$avs, addr=$addr zip=$zip banks=$nothing cvv=$cvv");
                           return 1 if $addr eq 'Y' or $zip eq 'Y';
                           return 1 if $addr eq 'X' and $zip eq 'X';
                           return 1 if $cvv =~ /^[MPSUX]$/;
                           $result->{MStatus} = 'failure';
                           if ($cvv eq 'N' || '') {
                                   $result->{r_error} = "The card security code you entered does not match. Additional failed attempts may hold your available funds.";
                           }
                           else {
                                   $result->{r_error} = "The billing address you entered does not match the cardholder's billing address. Additional failed attempts may hold your available funds.";
                           }
                   }
                   EOR

           That would work equally well as a Sub in catalog.cfg. It will succeed if either the
           address or zip is 'Y', or if both are unknown, or if the CVV matches or is unknown. If
           it fails, it sets the error message in the result hash.

           Of course you can use this sub to do any other post-processing you want as well.

   Troubleshooting
       If nothing works:

       •   Make sure you "Require"d the module in interchange.cfg:

               Require module Vend::Payment::Linkpoint

       •   Make sure lpperl (v3.0.012+) is installed and working. You can test to see whether
           your Perl thinks they are:

               perl -Mlpperl -e 'print "It works.\n"'

           If it "It works." and returns to the prompt you should be OK (presuming they are in
           working order otherwise).

       •   Make sure curl is installed and working.  Lpperl uses curl to contact Linkpoint.

       •   Check the error logs, both catalog and global.

       •   Make sure you set your payment parameters properly.

       •   Try an order, then put this code in a page:

               <XMP>
               [calc]
                   my $string = $Tag->uneval( { ref => $Session->{payment_result} });
                   $string =~ s/{/{\n/;
                   $string =~ s/,/,\n/g;
                   return $string;
               [/calc]
               </XMP>

           That should show what happened.

BUGS

       There is actually nothing *in* Vend::Payment::Linkpoint. It changes packages to
       Vend::Payment and places things there.

AUTHOR

       Stefan Hornburg (Racke) <racke@linuxia.de> Ron Phipps <rphipps@reliant-solutions.com>