Vend::Payment::Linkpoint - Interchange Linkpoint Support
&charge=linkpoint
or
[charge mode=linkpoint param1=value1 param2=value2]
LPERL
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 -- in theory (and even usually in practice) you
could switch from CyberCash to Linkpoint with a few configuration file
changes.
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
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 data come back negative.
If you want to fail based on a bad AVS check, make sure you're only doing an
auth -- not a sale, or your customers would get charged on orders
that fail the AVS check and never get logged in your system!
Add the parameters like this:
Route linkpoint check_sub avs_check
This is a matching sample subroutine you could put in interchange.cfg:
GlobalSub <<EOR
sub avs_check {
my ($result) = @_;
my $avs = $result->{r_avs};
my ($addr, $zip) = split m{}, $avs;
return 1 if $addr eq 'Y' or $zip eq 'Y';
return 1 if $addr eq 'X' and $zip eq 'X';
$result->{MStatus} = 'failure';
$result->{r_error} = $result->{MErrMsg} = "The billing address you entered does not match the cardholder's billing address";
return 0;
}
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. 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.
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.
There is actually nothing *in* Vend::Payment::Linkpoint. It changes packages to
Vend::Payment and places things there.
Stefan Hornburg (Racke) <racke@linuxia.de> Ron Phipps
<rphipps@reliant-solutions.com>