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55834476c4
When serving Moodle YUI files, including just moodlelib.php is not enough any more. We need the full setup in order to use MUC. Please note that cookies are disabled in these two scripts. This may make cache_store::MODE_SESSION caches unavailable. We do not expect they will be needed here.
252 lines
9.2 KiB
PHP
252 lines
9.2 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 images
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*
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* @package moodlecore
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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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$lastmodified = 0;
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foreach ($parts as $part) {
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if (empty($part)) {
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continue;
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}
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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 $part!\n";
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continue;
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}
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//debug($bits);
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$version = array_shift($bits);
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if ($version === 'moodle') {
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if (!defined('ABORT_AFTER_CONFIG_CANCEL')) {
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define('ABORT_AFTER_CONFIG_CANCEL', true);
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define('NO_UPGRADE_CHECK', true);
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define('NO_MOODLE_COOKIES', true);
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require($CFG->libdir.'/setup.php');
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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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$dir = get_component_directory($frankenstyle);
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if ($mimetype == 'text/css') {
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$bits[] = 'assets';
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$bits[] = 'skins';
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$bits[] = 'sam';
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}
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$contentfile = $dir.'/yui/'.join('/', $bits).'/'.$filename;
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} else if ($version === '2in3') {
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$contentfile = "$CFG->libdir/yuilib/$part";
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} else if ($version == 'gallery') {
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$contentfile = "$CFG->libdir/yui/$part";
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} else {
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if ($version != $CFG->yui3version) {
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$content .= "\n// Wrong yui version $part!\n";
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continue;
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}
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$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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$filecontent = file_get_contents($contentfile);
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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 ($version == 'moodle') {
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$filecontent = preg_replace('/([a-z0-9_-]+)\.(png|gif)/', $relroot.'/theme/yui_image.php'.$sep.$version.'/'.$frankenstyle.'/'.array_shift($bits).'/$1.$2', $filecontent);
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} else if ($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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// search for all images in gallery module 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.$version.'/'.$bits[0].'/'.$bits[1].'/$1.$2', $filecontent);
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} else {
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// First we need to remove relative paths to images. These are used by YUI modules to make use of global assets.
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// I've added this as a separate regex so it can be easily removed once
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// YUI standardise there CSS methods
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$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, '/');
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return array($slashargument, true);
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} else {
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// unsupported server, sorry!
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combo_not_found('Unsupported server - query string can not be determined, try disabling YUI combo loading in admin settings.');
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}
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}
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