4afe8b00a1
At the moment, local cover images cannot be cached by the web browser or any intermediate reverse proxies. This results in an unnecessary load on the server, and is entirely unnecessary. Signed-off-by: Dobrica Pavlinusic <dpavlin@rot13.org> Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>
105 lines
3 KiB
Perl
Executable file
105 lines
3 KiB
Perl
Executable file
#!/usr/bin/perl
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#
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# Copyright (C) 2011 C & P Bibliography Services
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# Jared Camins-Esakov <jcamins@cpbibliograpy.com>
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#
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# based on patronimage.pl
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#
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# This file is part of Koha.
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#
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# Koha is free software; you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with Koha; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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#
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#
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use strict;
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use warnings;
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use CGI;
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use C4::Context;
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use C4::Images;
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$| = 1;
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my $DEBUG = 0;
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my $data = new CGI;
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my $imagenumber;
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=head1 NAME
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opac-image.pl - Script for retrieving and formatting local cover images for display
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=head1 SYNOPSIS
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<img src="opac-image.pl?imagenumber=X" />
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<img src="opac-image.pl?biblionumber=X" />
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<img src="opac-image.pl?imagenumber=X&thumbnail=1" />
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<img src="opac-image.pl?biblionumber=X&thumbnail=1" />
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=head1 DESCRIPTION
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This script, when called from within HTML and passed a valid imagenumber or
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biblionumber, will retrieve the image data associated with that biblionumber
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if one exists, format it in proper HTML format and pass it back to be displayed.
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If the parameter thumbnail has been provided, a thumbnail will be returned
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rather than the full-size image. When a biblionumber is provided rather than an
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imagenumber, a random image is selected.
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=cut
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my ( $image, $mimetype ) = C4::Images->NoImage;
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if ( C4::Context->preference("OPACLocalCoverImages") ) {
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if ( defined $data->param('imagenumber') ) {
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$imagenumber = $data->param('imagenumber');
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}
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elsif ( defined $data->param('biblionumber') ) {
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my @imagenumbers = ListImagesForBiblio( $data->param('biblionumber') );
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if (@imagenumbers) {
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$imagenumber = $imagenumbers[0];
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}
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else {
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warn "No images for this biblio" if $DEBUG;
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}
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}
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else {
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$imagenumber = shift;
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}
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if ($imagenumber) {
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warn "imagenumber passed in: $imagenumber" if $DEBUG;
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my $imagedata = RetrieveImage($imagenumber);
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if ($imagedata) {
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if ( $data->param('thumbnail') ) {
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$image = $imagedata->{'thumbnail'};
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}
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else {
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$image = $imagedata->{'imagefile'};
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}
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$mimetype = $imagedata->{'mimetype'};
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}
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}
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}
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print $data->header(
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-type => $mimetype,
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-expires => '+30m',
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-Content_Length => length($image)
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), $image;
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=head1 AUTHOR
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Chris Nighswonger cnighswonger <at> foundations <dot> edu
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modified for local cover images by Koustubha Kale kmkale <at> anantcorp <dot> com
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=cut
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