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1573c3031b
This applies the same approach to generating minified js as is already used in theme/javascript.php and other scripts. When we need to do the minification, we load the full Moodle environment, so we can use the libraries. The reason this was required was because now the minifier uses autoloaded classes, which are not autoloaded when doing ABORT_AFTER_CONFIG. Fred persuaded me that it's probably safer to keep it that way, rather than alllow ABORT_AFTER_CONFIG scripts from autoloading the world and their dog (especially for resource serving scripts, they are intended to be lightweight when serving from cache).
118 lines
4.1 KiB
PHP
118 lines
4.1 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_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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require_once("$CFG->dirroot/lib/jslib.php");
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if ($slashargument = min_get_slash_argument()) {
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$slashargument = ltrim($slashargument, '/');
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if (substr_count($slashargument, '/') < 1) {
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header('HTTP/1.0 404 not found');
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die('Slash argument must contain both a revision and a file path');
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}
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// image must be last because it may contain "/"
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list($rev, $file) = explode('/', $slashargument, 2);
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$rev = min_clean_param($rev, 'INT');
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$file = '/'.min_clean_param($file, 'SAFEPATH');
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} else {
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$rev = min_optional_param('rev', -1, 'INT');
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$file = min_optional_param('jsfile', '', 'RAW'); // 'file' would collide with URL rewriting!
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}
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// some security first - pick only files with .js extension in dirroot
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$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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header('HTTP/1.0 404 not found');
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die('No valid javascript files found');
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}
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$etag = sha1($rev.implode(',', $jsfiles));
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// Use the caching only for meaningful revision numbers which prevents future cache poisoning.
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if ($rev > 0 and $rev < (time() + 60*60)) {
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$candidate = $CFG->localcachedir.'/js/'.$etag;
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if (file_exists($candidate)) {
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if (!empty($_SERVER['HTTP_IF_NONE_MATCH']) || !empty($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
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// we do not actually need to verify the etag value because our files
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// never change in cache because we increment the rev parameter
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js_send_unmodified(filemtime($candidate), $etag);
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}
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js_send_cached($candidate, $etag);
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} else {
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// The JS needs minfifying, so we're gonna have to load our full Moodle
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// environment to process it..
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define('ABORT_AFTER_CONFIG_CANCEL', true);
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define('NO_MOODLE_COOKIES', true); // Session not used here.
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define('NO_UPGRADE_CHECK', true); // Ignore upgrade check.
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require("$CFG->dirroot/lib/setup.php");
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js_write_cache_file_content($candidate, core_minify::js_files($jsfiles));
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// verify nothing failed in cache file creation
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clearstatcache();
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if (file_exists($candidate)) {
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js_send_cached($candidate, $etag);
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}
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}
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}
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$content = '';
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foreach ($jsfiles as $jsfile) {
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$content .= file_get_contents($jsfile)."\n";
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}
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js_send_uncached($content);
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