From 195545423483eb157bc5669c8911b693aeecb267 Mon Sep 17 00:00:00 2001
From: Kyle M Hall <kyle@bywatersolutions.com>
Date: Thu, 15 Oct 2020 08:58:17 -0400
Subject: [PATCH] Bug 26692: Add barcode image generator service for OPAC

Some libraries would like to add a scannable barcode to the patron self
service area of the opac for patrons who do not have their library cards
with them. The existing svc/barcode on the staff side should work fine,
but requires a staff login. It makes sense to duplicate this script
but only require a valid patron login to use it.

Test Plan:
1) Apply this patch
2) Browse to /cgi-bin/koha/svc/barcode?barcode=123456789 from your OPAC address
3) Note the barcode image
---
 opac/svc/barcode | 122 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100755 opac/svc/barcode

diff --git a/opac/svc/barcode b/opac/svc/barcode
new file mode 100755
index 0000000000..15890fb902
--- /dev/null
+++ b/opac/svc/barcode
@@ -0,0 +1,122 @@
+#!/usr/bin/perl
+
+# Copyright 2014 ByWater Solutions
+#
+# 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 CGI qw(header);
+use GD::Barcode;
+
+use C4::Auth qw(checkauth);
+
+=head1 NAME
+
+/cgi-bin/koha/svc/barcode
+
+=head1 SYNOPSIS
+
+This service generates a PNG barcode image for the requested barcode.
+
+=head2 PARAMETERS
+
+=over
+
+=item I<barcode>
+
+I<barcode> is the desired barcode. It should be called like:
+
+=item I<type>
+
+I<type> is the desired barcode type. Possible values are
+Code39
+UPCE
+UPCA
+QRcode
+NW7
+Matrix2of5
+ITF
+Industrial2of5
+IATA2of5
+EAN8
+EAN13
+COOP2of5
+
+If ommited,it defaults to Code39.
+
+=item I<notext>
+
+Unless I<notext=1> is specified in the parameter list, the
+value of the barcode will included as text below the
+scannable barcode.
+
+
+=back
+
+=head2 EXAMPLES
+
+=over
+
+=item /cgi-bin/koha/svc/barcode?barcode=123456789
+
+Returns a Code39 barcode image for barcode 123456789
+
+=item /cgi-bin/koha/svc/barcode?barcode=123456789&type=UPCE
+
+Returns a UPCE barcode image for barcode 123456789
+
+=item /cgi-bin/koha/svc/barcode?barcode=123456789&notext=1
+
+Returns a Code39 barcode image for barcode 123456789
+which does not include the human readable text '123456789'
+below the scannable barcode.
+
+=back
+
+=cut
+
+my $input = CGI->new;
+
+my ( $user, $cookie, $sessionID, $flags ) = checkauth( $input, 1, {}, 'opac' );
+$user && $sessionID or response_bad_request("User not logged in");
+
+binmode(STDOUT);
+
+my $type = $input->param('type') || 'Code39';
+my $barcode = $input->param('barcode');
+my $notext = $input->param('notext') ? 1 : 0;
+my $image;
+
+eval {
+    $image = GD::Barcode->new( $type, $barcode )->plot( NoText => $notext )->png();
+};
+
+if ( $@ ) {
+    # problem creating image
+    print header( -status => 500 );
+} else {
+    print header('image/png');
+    print $image;
+}
+
+exit 0;
+
+=head1 AUTHOR
+
+Kyle M Hall <kyle@bywatersolutions.com>
+
+=cut
-- 
2.24.1 (Apple Git-126)