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package Koha::Util::Navigation;
# Copyright Rijksmuseum 2018
#
# 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 <http://www.gnu.org/licenses>.
use Modern::Perl;
use C4::Context;
=head1 NAME
Koha::Util
=head1 SYNOPSIS
use Koha::Util::Navigation;
my $cgi = CGI->new;
my $referer = Koha::Util::Navigation::local_referer($cgi);
=head1 DESCRIPTION
Utility class
=head1 FUNCTIONS
=head2 local_referer
my $referer = Koha::Util::Navigation::local_referer( $cgi, { fallback => '/', remove_language => 1, staff => 1 });
If the referer is a local URI, return local path.
Otherwise return fallback.
Optional parameters fallback, remove_language and staff. If you do not
pass staff, opac is assumed.
=cut
sub local_referer {
my ( $cgi, $params ) = @_;
my $referer = $cgi->referer;
my $fallback = $params->{fallback} // '/';
my $staff = $params->{staff}; # no staff means OPAC
return $fallback if !$referer;
my $base = C4::Context->preference($staff ? 'staffClientBaseURL' : 'OPACBaseURL');
my $rv;
# Try ..BaseURL first, otherwise use CGI::url
if( $base ) {
if( $referer =~ m|^\Q$base\E|i &&
$referer =~ /\/cgi-bin\/koha\// )
{
$rv = substr( $referer, length($base) );
$rv =~ s/^\///;
$rv = '/'.$rv;
}
} else {
my $cgibase = $cgi->url( -base => 1 );
$cgibase =~ s/^https?://;
if( $referer =~ /$cgibase(\/cgi-bin\/koha\/.*)$/ ) {
$rv = $1;
}
}
$rv =~ s/(?<=[?&])language=[\w-]+(&|$)// if $rv and $params->{remove_language};
return $rv // $fallback;
}
1;
=head1 AUTHOR
Marcel de Rooy, Rijksmuseum Amsterdam, The Netherlands
Koha development team
=cut