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Differences Between: [Versions 310 and 401]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * This file is responsible for serving the one huge CSS of each theme.
  19   *
  20   * @package   core
  21   * @copyright 2009 Petr Skoda (skodak)  {@link http://skodak.org}
  22   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  
  26  // disable moodle specific debug messages and any errors in output,
  27  // comment out when debugging or better look into error log!
  28  define('NO_DEBUG_DISPLAY', true);
  29  
  30  // we need just the values from config.php and minlib.php
  31  define('ABORT_AFTER_CONFIG', true);
  32  require('../config.php'); // this stops immediately at the beginning of lib/setup.php
  33  require_once("$CFG->dirroot/lib/jslib.php");
  34  
  35  if ($slashargument = min_get_slash_argument()) {
  36      $slashargument = ltrim($slashargument, '/');
  37      if (substr_count($slashargument, '/') < 2) {
  38          header('HTTP/1.0 404 not found');
  39          die('Slash argument must contain both a revision and a file path');
  40      }
  41      // image must be last because it may contain "/"
  42      list($themename, $rev, $type) = explode('/', $slashargument, 3);
  43      $themename = min_clean_param($themename, 'SAFEDIR');
  44      $rev       = min_clean_param($rev, 'INT');
  45      $type      = min_clean_param($type, 'SAFEDIR');
  46  
  47  } else {
  48      $themename = min_optional_param('theme', 'standard', 'SAFEDIR');
  49      $rev       = min_optional_param('rev', -1, 'INT');
  50      $type      = min_optional_param('type', 'head', 'RAW');
  51  }
  52  
  53  if (!min_is_revision_valid_and_current($rev)) {
  54      // If the rev is invalid, normalise it to -1 to disable all caching.
  55      $rev = -1;
  56  }
  57  
  58  if ($type !== 'head' and $type !== 'footer') {
  59      header('HTTP/1.0 404 not found');
  60      die('Theme was not found, sorry.');
  61  }
  62  
  63  if (file_exists("$CFG->dirroot/theme/$themename/config.php")) {
  64      // exists
  65  } else if (!empty($CFG->themedir) and file_exists("$CFG->themedir/$themename/config.php")) {
  66      // exists
  67  } else {
  68      header('HTTP/1.0 404 not found');
  69      die('Theme was not found, sorry.');
  70  }
  71  
  72  $candidate = "$CFG->localcachedir/theme/$rev/$themename/javascript_$type.js";
  73  $etag = sha1("$rev/$themename/$type");
  74  
  75  if ($rev > 0 and file_exists($candidate)) {
  76      if (!empty($_SERVER['HTTP_IF_NONE_MATCH']) || !empty($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
  77          // we do not actually need to verify the etag value because our files
  78          // never change in cache because we increment the rev parameter
  79          js_send_unmodified(filemtime($candidate), $etag);
  80      }
  81      js_send_cached($candidate, $etag);
  82  }
  83  
  84  //=================================================================================
  85  // ok, now we need to start normal moodle script, we need to load all libs and $DB
  86  define('ABORT_AFTER_CONFIG_CANCEL', true);
  87  
  88  define('NO_MOODLE_COOKIES', true); // Session not used here
  89  define('NO_UPGRADE_CHECK', true);  // Ignore upgrade check
  90  
  91  require("$CFG->dirroot/lib/setup.php");
  92  
  93  $theme = theme_config::load($themename);
  94  $themerev = theme_get_revision();
  95  
  96  if ($themerev <= 0 or $rev != $themerev) {
  97      // Do not send caching headers if they do not request current revision,
  98      // we do not want to pollute browser caches with outdated JS.
  99      js_send_uncached($theme->javascript_content($type));
 100  }
 101  
 102  make_localcache_directory('theme', false);
 103  
 104  js_write_cache_file_content($candidate, core_minify::js_files($theme->javascript_files($type)));
 105  // Verify nothing failed in cache file creation.
 106  clearstatcache();
 107  if (file_exists($candidate)) {
 108      js_send_cached($candidate, $etag);
 109  }
 110  
 111  js_send_uncached($theme->javascript_content($type));