mirror of
https://github.com/moodle/moodle.git
synced 2025-01-19 06:18:28 +01:00
aea2973734
This will also force files loaded from the CDN to instead come from the local distribution since those patches will not be included in the CDN release. Please see the documentation at http://docs.moodle.org/dev/YUI/Patching for important on using these changes.
477 lines
18 KiB
PHP
477 lines
18 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 responsible for serving of yui Javascript and CSS
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*
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* @package core
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* @copyright 2009 Petr Skoda (skodak) {@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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// get special url parameters
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list($parts, $slasharguments) = combo_params();
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if (!$parts) {
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combo_not_found();
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}
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$etag = sha1($parts);
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$parts = trim($parts, '&');
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// find out what we are serving - only one type per request
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$content = '';
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if (substr($parts, -3) === '.js') {
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$mimetype = 'application/javascript';
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} else if (substr($parts, -4) === '.css') {
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$mimetype = 'text/css';
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} else {
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combo_not_found();
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}
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// if they are requesting a revision that's not -1, and they have supplied an
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// If-Modified-Since header, we can send back a 304 Not Modified since the
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// content never changes (the rev number is increased any time the content changes)
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if (strpos($parts, '/-1/') === false and (!empty($_SERVER['HTTP_IF_NONE_MATCH']) || !empty($_SERVER['HTTP_IF_MODIFIED_SINCE']))) {
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$lifetime = 60*60*24*360; // 1 year, we do not change YUI versions often, there are a few custom yui modules
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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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$parts = explode('&', $parts);
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$cache = true;
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$lastmodified = 0;
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while (count($parts)) {
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$part = array_shift($parts);
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if (empty($part)) {
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continue;
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}
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$filecontent = '';
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$part = min_clean_param($part, 'SAFEPATH');
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$bits = explode('/', $part);
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if (count($bits) < 2) {
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$content .= "\n// Wrong combo resource $part!\n";
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continue;
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}
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$version = array_shift($bits);
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if ($version === 'rollup') {
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$revision = array_shift($bits);
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$rollupname = array_shift($bits);
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if (strpos($rollupname, 'yui-moodlesimple') !== false) {
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if (substr($rollupname, -3) === '.js') {
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// Determine which version of this rollup should be used.
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$filesuffix = '.js';
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preg_match('/(-(debug|min))?\.js/', $rollupname, $matches);
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if (isset($matches[1])) {
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$filesuffix = $matches[0];
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}
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$type = 'js';
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} else if (substr($rollupname, -4) === '.css') {
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$type = 'css';
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} else {
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continue;
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}
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// Allow support for revisions on YUI between official releases.
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// We can just discard the subrevision since it is only used to invalidate the browser cache.
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$yuipatchedversion = explode('_', $revision);
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$yuiversion = $yuipatchedversion[0];
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$yuimodules = array(
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// Include everything from original SimpleYUI,
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// this list can be built using http://yuilibrary.com/yui/configurator/ by selecting all modules
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// listed in https://github.com/yui/yui3/blob/v3.12.0/build/simpleyui/simpleyui.js#L21327
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'yui',
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'yui-base',
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'get',
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'features',
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'loader-base',
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'loader-rollup',
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'loader-yui3',
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'oop',
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'event-custom-base',
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'dom-core',
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'dom-base',
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'color-base',
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'dom-style',
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'selector-native',
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'selector',
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'node-core',
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'node-base',
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'event-base',
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'event-base-ie',
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'pluginhost-base',
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'pluginhost-config',
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'event-delegate',
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'node-event-delegate',
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'node-pluginhost',
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'dom-screen',
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'node-screen',
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'node-style',
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'querystring-stringify-simple',
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'io-base',
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'json-parse',
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'transition',
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'selector-css2',
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'selector-css3',
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'dom-style-ie',
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// Some extras we use everywhere.
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'escape',
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'attribute-core',
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'event-custom-complex',
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'base-core',
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'attribute-base',
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'attribute-extras',
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'attribute-observable',
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'base-observable',
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'base-base',
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'base-pluginhost',
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'base-build',
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'event-synthetic',
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'attribute-complex',
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'event-mouseenter',
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'event-key',
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'event-outside',
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'event-autohide',
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'event-focus',
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'classnamemanager',
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'widget-base',
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'widget-htmlparser',
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'widget-skin',
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'widget-uievents',
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'widget-stdmod',
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'widget-position',
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'widget-position-align',
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'widget-stack',
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'widget-position-constrain',
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'overlay',
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'widget-autohide',
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'button-core',
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'button-plugin',
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'widget-buttons',
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'widget-modality',
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'panel',
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'yui-throttle',
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'dd-ddm-base',
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'dd-drag',
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'dd-plugin',
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// Cache is used by moodle-core-tooltip which we include everywhere.
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'cache-base',
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);
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// We need to add these new parts to the beginning of the $parts list, not the end.
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if ($type === 'js') {
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$newparts = array();
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foreach ($yuimodules as $module) {
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$newparts[] = $yuiversion . '/' . $module . '/' . $module . $filesuffix;
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}
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$newparts[] = 'yuiuseall/yuiuseall';
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$parts = array_merge($newparts, $parts);
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} else {
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$newparts = array();
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foreach ($yuimodules as $module) {
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$candidate = $yuiversion . '/' . $module . '/assets/skins/sam/' . $module . '.css';
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if (!file_exists("$CFG->libdir/yuilib/$candidate")) {
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continue;
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}
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$newparts[] = $candidate;
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}
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if ($newparts) {
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$parts = array_merge($newparts, $parts);
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}
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}
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}
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// Handle the mcore rollup.
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if (strpos($rollupname, 'mcore') !== false) {
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$yuimodules = array(
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'core/tooltip/tooltip',
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'core/popuphelp/popuphelp',
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'core/dock/dock-loader',
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'core/notification/notification-dialogue',
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);
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// Determine which version of this rollup should be used.
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$filesuffix = '.js';
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preg_match('/(-(debug|min))?\.js/', $rollupname, $matches);
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if (isset($matches[1])) {
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$filesuffix = $matches[0];
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}
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// We need to add these new parts to the beginning of the $parts list, not the end.
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$newparts = array();
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foreach ($yuimodules as $module) {
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$newparts[] = 'm/' . $revision . '/' . $module . $filesuffix;
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}
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$parts = array_merge($newparts, $parts);
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}
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continue;
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}
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if ($version === 'm') {
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$version = 'moodle';
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}
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if ($version === 'moodle') {
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if (count($bits) <= 3) {
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// This is an invalid module load attempt.
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$content .= "\n// Incorrect moodle module inclusion. Not enough component information in {$part}.\n";
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continue;
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}
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$revision = (int)array_shift($bits);
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if ($revision === -1) {
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// Revision -1 says please don't cache the JS
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$cache = false;
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}
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$frankenstyle = array_shift($bits);
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$filename = array_pop($bits);
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$modulename = $bits[0];
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$dir = core_component::get_component_directory($frankenstyle);
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// For shifted YUI modules, we need the YUI module name in frankenstyle format.
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$frankenstylemodulename = join('-', array($version, $frankenstyle, $modulename));
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$frankenstylefilename = preg_replace('/' . $modulename . '/', $frankenstylemodulename, $filename);
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// Submodules are stored in a directory with the full submodule name.
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// We need to remove the -debug.js, -min.js, and .js from the file name to calculate that directory name.
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$frankenstyledirectoryname = str_replace(array('-min.js', '-debug.js', '.js', '.css'), '', $frankenstylefilename);
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// By default, try and use the /yui/build directory.
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$contentfile = $dir . '/yui/build/' . $frankenstyledirectoryname;
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if ($mimetype == 'text/css') {
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// CSS assets are in a slightly different place to the JS.
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$contentfile = $contentfile . '/assets/skins/sam/' . $frankenstylefilename;
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// Add the path to the bits to handle fallback for non-shifted assets.
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$bits[] = 'assets';
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$bits[] = 'skins';
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$bits[] = 'sam';
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} else {
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$contentfile = $contentfile . '/' . $frankenstylefilename;
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}
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// If the shifted versions don't exist, fall back to the non-shifted file.
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if (!file_exists($contentfile) or !is_file($contentfile)) {
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// We have to revert to the non-minified and non-debug versions.
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$filename = preg_replace('/-(min|debug)\./', '.', $filename);
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$contentfile = $dir . '/yui/' . join('/', $bits) . '/' . $filename;
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}
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} else if ($version === '2in3') {
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$contentfile = "$CFG->libdir/yuilib/$part";
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} else if ($version == 'gallery') {
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if (count($bits) <= 2) {
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// This is an invalid module load attempt.
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$content .= "\n// Incorrect moodle module inclusion. Not enough component information in {$part}.\n";
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continue;
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}
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$revision = (int)array_shift($bits);
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if ($revision === -1) {
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// Revision -1 says please don't cache the JS
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$cache = false;
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}
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$contentfile = "$CFG->libdir/yuilib/gallery/" . join('/', $bits);
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} else if ($version == 'yuiuseall') {
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// Create global Y that is available in global scope,
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// this is the trick behind original SimpleYUI.
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$filecontent = "var Y = YUI().use('*');";
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} else {
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// Allow support for revisions on YUI between official releases.
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// We can just discard the subrevision since it is only used to invalidate the browser cache.
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$yuipatchedversion = explode('_', $version);
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$yuiversion = $yuipatchedversion[0];
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if ($yuiversion != $CFG->yui3version) {
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$content .= "\n// Wrong yui version $part!\n";
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continue;
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}
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$newpart = explode('/', $part);
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$newpart[0] = $yuiversion;
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$part = implode('/', $newpart);
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$contentfile = "$CFG->libdir/yuilib/$part";
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}
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if (!file_exists($contentfile) or !is_file($contentfile)) {
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$location = '$CFG->dirroot'.preg_replace('/^'.preg_quote($CFG->dirroot, '/').'/', '', $contentfile);
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$content .= "\n// Combo resource $part ($location) not found!\n";
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continue;
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}
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if (empty($filecontent)) {
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$filecontent = file_get_contents($contentfile);
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}
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$fmodified = filemtime($contentfile);
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if ($fmodified > $lastmodified) {
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$lastmodified = $fmodified;
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}
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$relroot = preg_replace('|^http.?://[^/]+|', '', $CFG->wwwroot);
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$sep = ($slasharguments ? '/' : '?file=');
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if ($mimetype === 'text/css') {
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if ($version == 'moodle') {
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// Search for all images in the file and replace with an appropriate link to the yui_image.php script
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$imagebits = array(
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$sep . $version,
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$frankenstyle,
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$modulename,
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array_shift($bits),
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'$1.$2'
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);
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$filecontent = preg_replace('/([a-z0-9_-]+)\.(png|gif)/', $relroot . '/theme/yui_image.php' . implode('/', $imagebits), $filecontent);
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} else if ($version == '2in3') {
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// First we need to remove relative paths to images. These are used by YUI modules to make use of global assets.
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// I've added this as a separate regex so it can be easily removed once
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// YUI standardise there CSS methods
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$filecontent = preg_replace('#(\.\./\.\./\.\./\.\./assets/skins/sam/)?([a-z0-9_-]+)\.(png|gif)#', '$2.$3', $filecontent);
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// search for all images in yui2 CSS and serve them through the yui_image.php script
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$filecontent = preg_replace('/([a-z0-9_-]+)\.(png|gif)/', $relroot.'/theme/yui_image.php'.$sep.$CFG->yui2version.'/$1.$2', $filecontent);
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} else if ($version == 'gallery') {
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// Replace any references to the CDN with a relative link.
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$filecontent = preg_replace('#(' . preg_quote('http://yui.yahooapis.com/') . '(gallery-[^/]*/))#', '../../../../', $filecontent);
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// Replace all relative image links with the a link to yui_image.php.
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$filecontent = preg_replace('#(' . preg_quote('../../../../') . ')(gallery-[^/]*/assets/skins/sam/[a-z0-9_-]+)\.(png|gif)#',
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$relroot . '/theme/yui_image.php' . $sep . '/gallery/' . $revision . '/$2.$3', $filecontent);
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} else {
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// First we need to remove relative paths to images. These are used by YUI modules to make use of global assets.
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// I've added this as a separate regex so it can be easily removed once
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// YUI standardise there CSS methods
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$filecontent = preg_replace('#(\.\./\.\./\.\./\.\./assets/skins/sam/)?([a-z0-9_-]+)\.(png|gif)#', '$2.$3', $filecontent);
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// search for all images in yui2 CSS and serve them through the yui_image.php script
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$filecontent = preg_replace('/([a-z0-9_-]+)\.(png|gif)/', $relroot.'/theme/yui_image.php'.$sep.$version.'/$1.$2', $filecontent);
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}
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}
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$content .= $filecontent;
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}
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if ($lastmodified == 0) {
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$lastmodified = time();
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}
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if ($cache) {
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combo_send_cached($content, $mimetype, $etag, $lastmodified);
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} else {
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combo_send_uncached($content, $mimetype);
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}
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/**
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* Send the JavaScript cached
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* @param string $content
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* @param string $mimetype
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* @param string $etag
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* @param int $lastmodified
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*/
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function combo_send_cached($content, $mimetype, $etag, $lastmodified) {
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$lifetime = 60*60*24*360; // 1 year, we do not change YUI versions often, there are a few custom yui modules
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header('Content-Disposition: inline; filename="combo"');
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header('Last-Modified: '. gmdate('D, d M Y H:i:s', $lastmodified) .' 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);
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header('Accept-Ranges: none');
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header('Content-Type: '.$mimetype);
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header('Etag: "'.$etag.'"');
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if (!min_enable_zlib_compression()) {
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header('Content-Length: '.strlen($content));
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}
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echo $content;
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die;
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}
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/**
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* Send the JavaScript uncached
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* @param string $content
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* @param string $mimetype
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*/
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function combo_send_uncached($content, $mimetype) {
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header('Content-Disposition: inline; filename="combo"');
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header('Last-Modified: '. gmdate('D, d M Y H:i:s', time()) .' GMT');
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header('Expires: '. gmdate('D, d M Y H:i:s', time() + 2) .' GMT');
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header('Pragma: ');
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header('Accept-Ranges: none');
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header('Content-Type: '.$mimetype);
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if (!min_enable_zlib_compression()) {
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header('Content-Length: '.strlen($content));
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}
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echo $content;
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die;
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}
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function combo_not_found($message = '') {
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header('HTTP/1.0 404 not found');
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if ($message) {
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echo $message;
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} else {
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echo 'Combo resource not found, sorry.';
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}
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die;
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}
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function combo_params() {
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if (isset($_SERVER['QUERY_STRING']) and strpos($_SERVER['QUERY_STRING'], 'file=/') === 0) {
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// url rewriting
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$slashargument = substr($_SERVER['QUERY_STRING'], 6);
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return array($slashargument, true);
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} else if (isset($_SERVER['REQUEST_URI']) and strpos($_SERVER['REQUEST_URI'], '?') !== false) {
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$parts = explode('?', $_SERVER['REQUEST_URI'], 2);
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return array($parts[1], false);
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} else if (isset($_SERVER['QUERY_STRING']) and strpos($_SERVER['QUERY_STRING'], '?') !== false) {
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// note: buggy or misconfigured IIS does return the query string in REQUEST_URI
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return array($_SERVER['QUERY_STRING'], false);
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} else if ($slashargument = min_get_slash_argument()) {
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$slashargument = ltrim($slashargument, '/');
|
|
return array($slashargument, true);
|
|
|
|
} else {
|
|
// unsupported server, sorry!
|
|
combo_not_found('Unsupported server - query string can not be determined, try disabling YUI combo loading in admin settings.');
|
|
}
|
|
}
|