theme/styles.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 the one huge CSS of each theme.
  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 // disable moodle specific debug messages and any errors in output,
  28 // comment out when debugging or better look into error log!
  29 define('NO_DEBUG_DISPLAY', true);
  30
  31 // we need just the values from config.php and minlib.php
  32 define('ABORT_AFTER_CONFIG', true);
  33 require('../config.php'); // this stops immediately at the beginning of lib/setup.php
  34 require_once($CFG->dirroot.'/lib/csslib.php');
  35
  36 if ($slashargument = min_get_slash_argument()) {
  37     $slashargument = ltrim($slashargument, '/');
  38     if (substr_count($slashargument, '/') < 2) {
  39         image_not_found();
  40     }
  41     // image must be last because it may contain "/"
  42     list($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', 0, 'INT');
  50     $type      = min_optional_param('type', 'all', 'SAFEDIR');
  51 }
  52
  53 if (!in_array($type, array('all', 'ie', 'editor', 'plugins', 'parents', 'theme'))) {
  54     header('HTTP/1.0 404 not found');
  55     die('Theme was not found, sorry.');
  56 }
  57
  58 if (file_exists("$CFG->dirroot/theme/$themename/config.php")) {
  59     // exists
  60 } else if (!empty($CFG->themedir) and file_exists("$CFG->themedir/$themename/config.php")) {
  61     // exists
  62 } else {
  63     header('HTTP/1.0 404 not found');
  64     die('Theme was not found, sorry.');
  65 }
  66
  67 if ($type === 'ie') {
  68     css_send_ie_css($themename, $rev, $etag, !empty($slashargument));
  69 }
  70
  71 $candidatesheet = "$CFG->cachedir/theme/$themename/css/$type.css";
  72 $etag = sha1("$themename/$rev/$type");
  73
  74 if (file_exists($candidatesheet)) {
  75     if (!empty($_SERVER['HTTP_IF_NONE_MATCH']) || !empty($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
  76         // we do not actually need to verify the etag value because our files
  77         // never change in cache because we increment the rev parameter
  78         css_send_unmodified(filemtime($candidatesheet), $etag);
  79     }
  80     css_send_cached_css($candidatesheet, $etag);
  81 }
  82
  83 //=================================================================================
  84 // ok, now we need to start normal moodle script, we need to load all libs and $DB
  85 define('ABORT_AFTER_CONFIG_CANCEL', true);
  86
  87 define('NO_MOODLE_COOKIES', true); // Session not used here
  88 define('NO_UPGRADE_CHECK', true);  // Ignore upgrade check
  89
  90 require("$CFG->dirroot/lib/setup.php");
  91
  92 $theme = theme_config::load($themename);
  93
  94 $rev = theme_get_revision();
  95 $etag = sha1("$themename/$rev/$type");
  96
  97 if ($type === 'editor') {
  98     $cssfiles = $theme->editor_css_files();
  99     css_store_css($theme, $candidatesheet, $cssfiles);
 100 } else {
 101     $css = $theme->css_files();
 102     $allfiles = array();
 103     foreach ($css as $key=>$value) {
 104         $cssfiles = array();
 105         foreach($value as $val) {
 106             if (is_array($val)) {
 107                 foreach ($val as $k=>$v) {
 108                     $cssfiles[] = $v;
 109                 }
 110             } else {
 111                 $cssfiles[] = $val;
 112             }
 113         }
 114         $cssfile = "$CFG->cachedir/theme/$themename/css/$key.css";
 115         css_store_css($theme, $cssfile, $cssfiles);
 116         $allfiles = array_merge($allfiles, $cssfiles);
 117     }
 118     $cssfile = "$CFG->cachedir/theme/$themename/css/all.css";
 119     css_store_css($theme, $cssfile, $allfiles);
 120 }
 121
 122 // verify nothing failed in cache file creation
 123 clearstatcache();
 124 if (!file_exists($candidatesheet)) {
 125     css_send_css_not_found();
 126 }
 127
 128 css_send_cached_css($candidatesheet, $etag);