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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* This file is responsible for serving the one huge CSS of each theme.
*
* @package moodlecore
* @copyright 2009 Petr Skoda (skodak) {@link http://skodak.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
// we need just the values from config.php and minlib.php
define('ABORT_AFTER_CONFIG', true);
require('../config.php'); // this stops immediately at the beginning of lib/setup.php
$themename = min_optional_param('theme', 'standard', 'SAFEDIR');
$rev = min_optional_param('rev', 0, 'INT');
$type = min_optional_param('type', 'head', 'RAW');
if ($type !== 'head' and $type !== 'footer') {
header('HTTP/1.0 404 not found');
die('Theme was not found, sorry.');
}
if (file_exists("$CFG->dirroot/theme/$themename/config.php")) {
// exists
} else if (!empty($CFG->themedir) and file_exists("$CFG->themedir/$themename/config.php")) {
// exists
} else {
header('HTTP/1.0 404 not found');
die('Theme was not found, sorry.');
}
$candidate = "$CFG->dataroot/cache/theme/$themename/javascript_$type.js";
if ($rev > -1 and file_exists($candidate)) {
if (!empty($_SERVER['HTTP_IF_NONE_MATCH'])) {
// we do not actually need to verify the etag value because our files
// never change in cache because we increment the rev parameter
header('HTTP/1.1 304 Not Modified');
$lifetime = 60*60*24*30; // 30 days
header('Expires: '. gmdate('D, d M Y H:i:s', time() + $lifetime) .' GMT');
header('Cache-Control: max-age='.$lifetime);
header('Content-Type: application/javascript; charset=utf-8');
die;
}
send_cached_js($candidate, $rev);
}
//=================================================================================
// ok, now we need to start normal moodle script, we need to load all libs and $DB
define('ABORT_AFTER_CONFIG_CANCEL', true);
define('NO_MOODLE_COOKIES', true); // Session not used here
define('NO_UPGRADE_CHECK', true); // Ignore upgrade check
require("$CFG->dirroot/lib/setup.php");
// setup include path
set_include_path($CFG->libdir . '/minify/lib' . PATH_SEPARATOR . get_include_path());
require_once('Minify.php');
$theme = theme_config::load($themename);
if ($rev > -1) {
check_dir_exists(dirname($candidate));
$fp = fopen($candidate, 'w');
fwrite($fp, minify($theme->javascript_files($type)));
fclose($fp);
send_cached_js($candidate);
} else {
send_uncached_js($theme->javascript_content($type));
}
//=================================================================================
//=== utility functions ==
// we are not using filelib because we need to fine tune all header
// parameters to get the best performance.
function send_cached_js($jspath) {
$lifetime = 60*60*24*30; // 30 days
header('Content-Disposition: inline; filename="javascript.php"');
header('Last-Modified: '. gmdate('D, d M Y H:i:s', filemtime($jspath)) .' GMT');
header('Expires: '. gmdate('D, d M Y H:i:s', time() + $lifetime) .' GMT');
header('Pragma: ');
header('Cache-Control: max-age='.$lifetime);
header('Accept-Ranges: none');
header('Content-Type: application/javascript; charset=utf-8');
if (!min_enable_zlib_compression()) {
header('Content-Length: '.filesize($jspath));
}
readfile($jspath);
die;
}
function send_uncached_js($js) {
header('Content-Disposition: inline; filename="javascript.php"');
header('Last-Modified: '. gmdate('D, d M Y H:i:s', time()) .' GMT');
header('Expires: '. gmdate('D, d M Y H:i:s', time() + 2) .' GMT');
header('Pragma: ');
header('Accept-Ranges: none');
header('Content-Type: application/javascript; charset=utf-8');
header('Content-Length: '.strlen($js));
echo $js;
die;
}
function minify($files) {
if (0 === stripos(PHP_OS, 'win')) {
Minify::setDocRoot(); // IIS may need help
}
// disable all caching, we do it in moodle
Minify::setCache(null, false);
$options = array(
'bubbleCssImports' => false,
// Don't gzip content we just want text for storage
'encodeOutput' => false,
// Maximum age to cache, not used but required
'maxAge' => 1800,
// The files to minify
'files' => $files,
// Turn orr URI rewriting
'rewriteCssUris' => false,
// This returns the CSS rather than echoing it for display
'quiet' => true
);
$result = Minify::serve('Files', $options);
return $result['content'];
}
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