<?php
# PAPERWEB - GPLv3 licence
# Copyright 2016 Yves Gablin
#  This program 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.
#  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
#
$CONF = parse_ini_file('paperweb.ini.php');

$datearg = escapeshellarg($_REQUEST['doThumbnails']);
$json = exec("sudo -u {$CONF['USER']} {$CONF['PATH']} -M {$datearg}");
$meta = json_decode($json, true);
$knownetag = trim(@$_SERVER['HTTP_IF_NONE_MATCH'], ' "');
if ($meta['etag'] == $knownetag) {
  header('HTTP/1.1 304 Not Modified');
} else {
  header("ETag: \"{$meta['etag']}\"");
  header("Cache-Control: public");
?>
<?xml version="1.0" encoding="UTF-8"?>
<?php
  require('thumbs.inc.php');
}