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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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.
//
// Moodle 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 Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* jQuery serving script.
*
* Do not include jQuery scripts or CSS directly, always use
* $PAGE->requires->jquery() or $PAGE->requires->jquery_plugin('xx', 'yy').
*
* @package core
* @copyright 2013 Petr Skoda {@link http://skodak.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
// Disable moodle specific debug messages and any errors in output,
// comment out when debugging or better look into error log!
define('NO_DEBUG_DISPLAY', true);
// We need just the values from config.php and minlib.php.
define('ABORT_AFTER_CONFIG', true);
require('../config.php'); // This stops immediately at the beginning of lib/setup.php.
if ($slashargument = min_get_slash_argument()) {
$path = ltrim($slashargument, '/');
} else {
$path = min_optional_param('file', '', 'SAFEPATH');
$path = ltrim($path, '/');
}
if (strpos($path, '/') === false) {
jquery_file_not_found();
}
list($component, $path) = explode('/', $path, 2);
if (empty($path) or empty($component)) {
jquery_file_not_found();
}
// Find the jQuery dir for this component.
if ($component === 'core') {
$componentdir = "$CFG->dirroot/lib";
} else if (strpos($component, 'theme_')) {
if (!empty($CFG->themedir)) {
$componentdir = "$CFG->themedir/$component";
} else {
$componentdir = "$CFG->dirroot/theme/$component";
}
} else {
$componentdir = core_component::get_component_directory($component);
}
if (!file_exists($componentdir) or !file_exists("$componentdir/jquery/plugins.php")) {
jquery_file_not_found();
}
$file = realpath("$componentdir/jquery/$path");
if (!$file or is_dir($file)) {
jquery_file_not_found();
}
$etag = sha1("$component/$path");
// 90 days only - based on Moodle point release cadence being every 3 months.
$lifetime = 60 * 60 * 24 * 90;
$pathinfo = pathinfo($path);
if (empty($pathinfo['extension'])) {
jquery_file_not_found();
}
$filename = $pathinfo['filename'].'.'.$pathinfo['extension'];
switch($pathinfo['extension']) {
case 'gif' : $mimetype = 'image/gif';
break;
case 'png' : $mimetype = 'image/png';
break;
case 'jpg' : $mimetype = 'image/jpeg';
break;
case 'jpeg' : $mimetype = 'image/jpeg';
break;
case 'ico' : $mimetype = 'image/vnd.microsoft.icon';
break;
case 'svg' : $mimetype = 'image/svg+xml';
break;
case 'js' : $mimetype = 'application/javascript';
break;
case 'css' : $mimetype = 'text/css';
break;
case 'php' : jquery_file_not_found();
break;
default : $mimetype = 'document/unknown';
}
if (!empty($_SERVER['HTTP_IF_NONE_MATCH']) || !empty($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
// We do not actually need to verify the etag value because these files
// never change, devs need to change file names on update!
header('HTTP/1.1 304 Not Modified');
header('Expires: '. gmdate('D, d M Y H:i:s', time() + $lifetime) .' GMT');
header('Cache-Control: public, max-age='.$lifetime);
header('Content-Type: '.$mimetype);
header('Etag: "'.$etag.'"');
die;
}
require_once("$CFG->dirroot/lib/xsendfilelib.php");
header('Etag: "'.$etag.'"');
header('Content-Disposition: inline; filename="'.$filename.'"');
header('Last-Modified: '. gmdate('D, d M Y H:i:s', filemtime($file)) .' GMT');
header('Expires: '. gmdate('D, d M Y H:i:s', time() + $lifetime) .' GMT');
header('Pragma: ');
header('Cache-Control: public, max-age='.$lifetime.', immutable');
header('Accept-Ranges: none');
header('Content-Type: '.$mimetype);
if (xsendfile($file)) {
die;
}
if ($mimetype === 'text/css' or $mimetype === 'application/javascript') {
if (!min_enable_zlib_compression()) {
header('Content-Length: '.filesize($file));
}
} else {
// No need to compress images.
header('Content-Length: '.filesize($file));
}
readfile($file);
die;
function jquery_file_not_found() {
// Note: we can not disclose the exact file path here, sorry.
header('HTTP/1.0 404 not found');
die('File was not found, sorry.');
}