Koha-clms/Koha/Auth/Identity/Referer.pm

122 lines
3.5 KiB
Perl

package Koha::Auth::Identity::Referer;
#
# This file is part of Koha.
#
# Koha is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# Koha is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Koha; if not, see <https://www.gnu.org/licenses>.
use Modern::Perl;
use C4::Context;
=head1 NAME
Koha::Auth::Identity::Referer
=head1 SYNOPSIS
use Koha::Auth::Identity::Referer;
Koha::Auth::Identity::Referer->store_referer({
referer => $c->req->headers->referer,
interface => $interface,
session => $session,
});
my $target_uri = Koha::Auth::Identity::Referer->get_referer({
session => $session,
});
=head1 DESCRIPTION
Class for working with HTTP referrers specifically for
when doing SSO.
=head1 FUNCTIONS
=head2 store_referer
Koha::Auth::Identity::Referer->store_referer({
referer => $c->req->headers->referer,
interface => $interface,
session => $session,
});
If the referer is for a Koha URL, then it gets saved
in a session variable for use after a successful SSO login.
=cut
sub store_referer {
my ( $class, $args ) = @_;
my $referer = $args->{referer};
my $interface = $args->{interface};
my $session = $args->{session};
my $valid_referer;
if ( $referer && $interface && $session ) {
my $base_url;
if ( $interface eq 'opac' ) {
$base_url = C4::Context->preference('OPACBaseURL');
} else {
$base_url = C4::Context->preference('staffClientBaseURL');
}
if ( $base_url && $referer && $referer =~ /^\Q$base_url\E/ ) {
my $referer_uri = URI->new($referer);
#NOTE: Remove logout.x query param to prevent logout loops
$referer_uri->query_param_delete('logout.x') if $referer_uri->query_param('logout.x');
my $referer_to_save = $referer_uri->path_query();
if ($referer_to_save) {
#NOTE: Don't bother saving a root referer
#NOTE: Don't save opac-main.pl because it should redirect to opac-user.pl
unless ( ( $referer_to_save eq '/' ) || ( $referer_to_save eq '/cgi-bin/koha/opac-main.pl' ) ) {
$session->param( 'idp_referer', $referer_to_save );
$session->flush();
}
}
}
}
return $valid_referer;
}
=head2 get_referer
my $target_uri = Koha::Auth::Identity::Referer->get_referer({
session => $session,
});
If a referer was stored in a session variable, then we retrieve
it for use by SSO functionality. That is, after a successful SSO, we'll
redirect to this referer, so we wind up back where we started.
=cut
sub get_referer {
my ( $class, $args ) = @_;
my $referer;
my $session = $args->{session};
if ($session) {
my $idp_referer = $session->param('idp_referer');
if ($idp_referer) {
$referer = $idp_referer;
$session->clear('idp_referer');
$session->flush();
}
}
return $referer;
}
1;