Have a look at Authen::NZRealMe and its sub modules

The process may be a little different depending on whether you are trying to parse a Service Provider issued SAML AuthnRequest or an Identity Provider issued SAMLResponse

An AuthnRequest will typically be rawdeflated ( IO::Compress::RawDeflate::rawdeflate ), Base64 encoded ( MIME::Base64::encode_base64 ), and URI encoded ( URI::Escape::uri_escape ).

To parse a SAML AuthnRequest you need to process the data in reverse.

Here is a simple example. Note: This example does not verify the digital signature of the AuthnRequest (if it exists). 

use warnings;
use strict;
use MIME::Base64               qw(encode_base64 decode_base64);
use URI::Escape                qw(uri_escape uri_unescape);
use IO::Uncompress::RawInflate qw(rawinflate $RawInflateError);

my $AuthnRequestXML = '';
my $samlRequest = 'BASE64_ENCODED_SAMLREQUEST_FROM_SERVICE_PROVIDER';
$samlRequest = uri_unescape($samlRequest);
$samlRequest = decode_base64($samlRequest);
rawinflate \$samlRequest => $AuthnRequestXML or return "Error decompre
+ssing data: $RawInflateError\n";
print "SAML AuthnRequest XML:\n$AuthnRequestXML\n";

[download]
To make the XML output easier to read, you can send it through XML::Tidy 
use XML::Tidy;
XML::Tidy->new('xml'=>$AuthnRequestXML)->tidy()->toString();

[download]

In reply to Re: Perl and SAML by bcarroll
in thread Perl and SAML by Hammy

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.