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ee891dacc7
The correct place to write errors and notices is log, we can let Javascript and binary files to be randomly modified.
120 lines
3.5 KiB
PHP
120 lines
3.5 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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// 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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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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