theme/yui_combo.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 /**
  19  * This file is responsible for serving of yui images
  20  *
  21  * @package   moodlecore
  22  * @copyright 2009 Petr Skoda (skodak)  {@link http://skodak.org}
  23  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  */
  25
  26
  27 // we need just the values from config.php and minlib.php
  28 define('ABORT_AFTER_CONFIG', true);
  29 require('../config.php'); // this stops immediately at the beginning of lib/setup.php
  30
  31 // get special url parameters
  32 if (!$parts = combo_params()) {
  33     combo_not_found();
  34 }
  35
  36 $parts = trim($parts, '&');
  37
  38 // find out what we are serving - only one type per request
  39 $content = '';
  40 if (substr($parts, -3) === '.js') {
  41     $mimetype = 'application/x-javascript';
  42 } else if (substr($parts, -4) === '.css') {
  43     $mimetype = 'text/css';
  44 } else {
  45     combo_not_found();
  46 }
  47
  48 $parts = explode('&', $parts);
  49
  50 foreach ($parts as $part) {
  51     if (empty($part)) {
  52         continue;
  53     }
  54     $part = min_clean_param($part, 'SAFEPATH');
  55     $bits = explode('/', $part);
  56     if (count($bits) < 2) {
  57         $content .= "\n// Wrong combo resource $part!\n";
  58         continue;
  59     }
  60     $version = $bits[0];
  61     if ($version != $CFG->yui3version and $version != $CFG->yui2version) {
  62         $content .= "\n// Wrong yui version $part!\n";
  63         continue;
  64     }
  65     $contentfile = "$CFG->libdir/yui/$part";
  66     if (!file_exists($contentfile) or !is_file($contentfile)) {
  67         $content .= "\n// Combo resource $part not found!\n";
  68         continue;
  69     }
  70     $filecontent = file_get_contents($contentfile);
  71
  72     if ($mimetype === 'text/css') {
  73         // search for all images in yui2 CSS and serve them through the yui_image.php script
  74         $filecontent = preg_replace('/([a-z_-]+)\.(png|gif)/', 'yui_image.php?file='.$version.'/$1.$2', $filecontent);
  75     }
  76
  77     $content .= $filecontent;
  78 }
  79
  80
  81 combo_send_cached($content, $mimetype);
  82
  83
  84
  85 function combo_send_cached($content, $mimetype) {
  86     $lifetime = 60*60*24*300; // 300 days === forever
  87
  88     header('Content-Disposition: inline; filename="combo"');
  89     header('Last-Modified: '. gmdate('D, d M Y H:i:s', time()) .' GMT');
  90     header('Expires: '. gmdate('D, d M Y H:i:s', time() + $lifetime) .' GMT');
  91     header('Pragma: ');
  92     header('Cache-Control: max-age=315360000');
  93     header('Accept-Ranges: none');
  94     header('Content-Type: '.$mimetype);
  95     if (!min_enable_zlib_compression()) {
  96         header('Content-Length: '.strlen($content));
  97     }
  98
  99     echo $content;
 100     die;
 101 }
 102
 103 function combo_not_found() {
 104     header('HTTP/1.0 404 not found');
 105     die('Combo resource not found, sorry.');
 106 }
 107
 108 function combo_params() {
 109     if (!empty($_SERVER['REQUEST_URI'])) {
 110         $parts = explode('?', $_SERVER['REQUEST_URI']);
 111         if (count($parts) != 2) {
 112             return '';
 113         }
 114         return $parts[1];
 115
 116     } else if (!empty($_SERVER['QUERY_STRING'])) {
 117         return $_SERVER['QUERY_STRING'];
 118
 119     } else {
 120         return '';
 121     }
 122 }