mirror of
https://github.com/moodle/moodle.git
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116 lines
3.3 KiB
PHP
116 lines
3.3 KiB
PHP
<?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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* This file is serving optimised JS
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*
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* @package core
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* @subpackage lib
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* @copyright 2010 Petr Skoda (skodak)
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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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// 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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ini_set('zlib.output_compression', 'Off');
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// setup include path
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set_include_path($CFG->libdir . '/minify/lib' . PATH_SEPARATOR . get_include_path());
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require_once('Minify.php');
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$file = min_optional_param('file', '', 'RAW');
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$rev = min_optional_param('rev', 0, 'INT');
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// some security first - pick only files with .js extension in dirroot
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$jsfiles = array();
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$files = explode(',', $file);
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foreach ($files as $fsfile) {
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$jsfile = realpath($CFG->dirroot.$fsfile);
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if ($jsfile === false) {
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// does not exist
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continue;
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}
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if ($CFG->dirroot === '/') {
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// Some shared hosting sites serve files directly from '/',
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// this is NOT supported, but at least allow JS when showing
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// errors and warnings.
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} else if (strpos($jsfile, $CFG->dirroot . DIRECTORY_SEPARATOR) !== 0) {
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// hackers - not in dirroot
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continue;
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}
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if (substr($jsfile, -3) !== '.js') {
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// hackers - not a JS file
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continue;
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}
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$jsfiles[] = $jsfile;
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}
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if (!$jsfiles) {
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// bad luck - no valid files
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die();
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}
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minify($jsfiles);
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function minify($files) {
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global $CFG;
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$cachedir = $CFG->cachedir.'/js';
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// make sure the cache dir exist
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if (!file_exists($cachedir)) {
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@mkdir($cachedir, $CFG->directorypermissions, true);
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}
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if (0 === stripos(PHP_OS, 'win')) {
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Minify::setDocRoot(); // IIS may need help
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}
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Minify::setCache($cachedir, true);
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$options = array(
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// Maximum age to cache
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'maxAge' => (60*60*24*20),
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// The files to minify
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'files' => $files
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);
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try {
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Minify::serve('Files', $options);
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die();
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} catch (Exception $e) {
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$error = $e->getMessage();
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$error = str_replace("\r", ' ', $error);
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$error = str_replace("\n", ' ', $error);
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}
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// minification failed - try to inform the developer and include the non-minified version
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$js = <<<EOD
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try {console.log('Error: Minimisation of javascript failed!');} catch (e) {}
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// Error: $error
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// Problem detected during javascript minimisation, please review the following code
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// =================================================================================
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EOD;
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echo $js;
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foreach ($files as $jsfile) {
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echo file_get_contents($jsfile)."\n";
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}
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}
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