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