2 /************************************************************************
3 * MXChange v0.2.1 Start: 06/26/2004 *
4 * =============== Last change: 07/01/2005 *
6 * -------------------------------------------------------------------- *
7 * File : load_extensions.php *
8 * -------------------------------------------------------------------- *
9 * Short description : Load all extensions *
10 * -------------------------------------------------------------------- *
11 * Kurzbeschreibung : Alle Erweiterungen laden *
12 * -------------------------------------------------------------------- *
14 * -------------------------------------------------------------------- *
15 * Copyright (c) 2003 - 2008 by Roland Haeder *
16 * For more information visit: http://www.mxchange.org *
18 * This program is free software; you can redistribute it and/or modify *
19 * it under the terms of the GNU General Public License as published by *
20 * the Free Software Foundation; either version 2 of the License, or *
21 * (at your option) any later version. *
23 * This program is distributed in the hope that it will be useful, *
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
26 * GNU General Public License for more details. *
28 * You should have received a copy of the GNU General Public License *
29 * along with this program; if not, write to the Free Software *
30 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *
32 ************************************************************************/
34 // Some security stuff...
35 if (ereg(basename(__FILE__), $_SERVER['PHP_SELF']))
37 $INC = substr(dirname(__FILE__), 0, strpos(dirname(__FILE__), "/inc") + 4) . "/security.php";
41 global $EXT_CSS_FILES;
42 $EXT_CSS_FILES = array();
45 // Skip loading extensions
46 if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing'))) return;
48 // Load default sql_patches extension if present
49 if (FILE_READABLE(PATH."inc/extensions/ext-sql_patches.php")) {
52 require_once(PATH."inc/extensions/ext-sql_patches.php");
53 $cacheArray['active_extensions'] = array('sql_patches' => 'Y'); // KEEP THIS ALWAYS ACTIVE!
55 // Initialize array for "always keep active extensions"
56 $cacheArray['active_extensions'] = array();
62 if (EXT_IS_ACTIVE("cache")) {
63 // Load cache extension alone
64 include_once(PATH."inc/libs/cache_functions.php");
66 include_once(PATH."inc/extensions/ext-cache.php");
67 switch($cacheInstance->cache_file("extensions", true)) {
68 case true : $cacheMode = "load"; break;
69 case false: $cacheMode = "init"; break;
72 // Do not recreate cache file when it's switched off!
73 if (($cacheMode == "init") && ($_CONFIG['cache_exts'] == "N")) $cacheMode = "skip";
76 if ($cacheMode == "load") include(PATH."inc/language/cache_".GET_LANGUAGE().".php");
78 // Cache extension not active
82 if ($cacheMode == "load") {
83 // Load more cache files (like admins)
84 require_once(PATH."inc/load_cache.php");
86 // Re-initialize handler
87 $cacheInstance->cache_file("extensions", true);
89 // Load extension data from cache file
90 $EXT_DUMMY = $cacheInstance->cache_load();
92 foreach ($EXT_DUMMY['ext_name'] as $k => $name) {
93 // Load functions file
94 if ($EXT_DUMMY['ext_funcs'][$k] == "Y") {
95 require_once(PATH."inc/libs/".$name."_functions.php");
99 if ($EXT_DUMMY['ext_lang'][$k] == "Y") {
100 $INC = sprintf("%sinc/language/%s_%s.php", PATH, $name, GET_LANGUAGE());
101 if (FILE_READABLE($INC)) require_once($INC);
105 if ($EXT_DUMMY['ext_css'][$k] == "Y") $EXT_CSS_FILES[] = "".$name.".css";
107 // Load extension file itself
108 if (($EXT_DUMMY['ext_active'][$k] == "Y") || ($EXT_DUMMY['ext_keep'][$k] == "Y") || (IS_ADMIN())) {
109 require_once(PATH."inc/extensions/ext-".$name.".php");
113 $EXT_DUMMY['ext_version'][$name] = $EXT_DUMMY['ext_version'][$k];
114 unset($EXT_DUMMY['ext_version'][$k]);
115 // Extension is active
116 $EXT_DUMMY['ext_active'][$name] = $EXT_DUMMY['ext_active'][$k];
117 unset($EXT_DUMMY['ext_active'][$k]);
119 $EXT_DUMMY['ext_menu'][$name] = $EXT_DUMMY['ext_menu'][$k];
120 unset($EXT_DUMMY['ext_menu'][$k]);
122 $EXT_DUMMY['ext_id'][$name] = $EXT_DUMMY['ext_id'][$k];
123 $id = $EXT_DUMMY['ext_id'][$name];
124 unset($EXT_DUMMY['ext_id'][$k]);
127 $EXT_NAMES[$id] = $name;
129 // Mark it as active extension
130 $cacheArray['active_extensions']['$name'] = $EXT_DUMMY['ext_keep'][$k];
131 unset($EXT_DUMMY['ext_keep'][$k]);
133 // Remove unneccessary data from memory
134 unset($EXT_DUMMY['ext_lang'][$k]);
135 unset($EXT_DUMMY['ext_css'][$k]);
136 unset($EXT_DUMMY['ext_funcs'][$k]);
139 // Write dummy array back
140 $EXT_DUMMY['ext_name'] = $EXT_NAMES;
144 $cacheInstance->cache_close();
146 // Loading cache is done so let's free some memory!
147 unset($EXT_DUMMY['ext_lang']);
148 unset($EXT_DUMMY['ext_keep']);
149 unset($EXT_DUMMY['ext_css']);
150 unset($EXT_DUMMY['ext_funcs']);
151 $cacheArray['extensions'] = $EXT_DUMMY;
154 // No database load needed
155 $res_ext_crt = false;
157 // If current user is not admin load only activated extensions
158 // The admin shall use every available extension for testing purposes
159 if ((!IS_ADMIN()) && ($cacheMode != "init")) $ADD = " WHERE ext_active='Y'";
161 if (GET_EXT_VERSION("sql_patches") >= "0.0.6") {
162 // Query with CSS file from DB
163 $res_ext_crt = SQL_QUERY("SELECT id, ext_name, ext_lang_file, ext_has_css, ext_active, ext_version
164 FROM "._MYSQL_PREFIX."_extensions".$ADD."
165 ORDER BY ext_name", __FILE__, __LINE__);
167 // Old obsulete query string
168 $res_ext_crt = SQL_QUERY("SELECT id, ext_name, ext_lang_file, ext_name, ext_active, ext_version
169 FROM "._MYSQL_PREFIX."_extensions".$ADD."
170 ORDER BY ext_name", __FILE__, __LINE__);
174 // Array for removed but not uninstalled extensions
177 // At least one found?
178 if ((SQL_NUMROWS($res_ext_crt) > 0) && (($cacheMode == "init") || ($cacheMode == "no")) && ($CSS != "1") && ($CSS != "-1")) {
179 // Load theme management
180 require_once(PATH."inc/theme-manager.php");
182 // If we need to init the cache init it now
183 if ($cacheMode == "init") $cacheInstance->cache_init("EXTENSIONS");
185 // Extensions are registered so we load them
186 while (list($EXT_ID, $name, $lang, $css, $active, $version) = SQL_FETCHROW($res_ext_crt)) {
189 if (MODULE_HAS_MENU($name, true)) {
194 $file1 = sprintf("%sinc/extensions/ext-%s.php", PATH, $name);
195 $file2 = $file1; $EXT_CSS = "N"; $EXT_ALWAYS_ACTIVE = "N";
197 // Special functions file
198 $file3 = sprintf("%sinc/libs/%s_functions.php", PATH, $name);
200 // Does the extension file exists?
201 if (FILE_READABLE($file1)) {
202 // If there's no language file specified we don't need to load one... ;-)
204 // Create language file
205 $file2 = sprintf("%sinc/language/%s_%s.php", PATH, $lang, GET_LANGUAGE());
208 if (FILE_READABLE($file3)) {
209 // Special functions file
211 require_once($file3);
213 // Don't load functions file
217 // Do we need a language file?
218 if (($file1 != $file2) && (FILE_READABLE($file2))) {
219 // Load language file
223 // Don't load language file
228 if ($name != "sql_patches") {
229 // Load extension's file
230 include_once($file1);
232 // KEEP sql_patches ALWAYS ACTIVE!
233 $EXT_ALWAYS_ACTIVE = "Y";
237 $CSS_FILE = sprintf("%stheme/%s/css/%s.css", PATH, GET_CURR_THEME(), $name);
238 if (FILE_READABLE($CSS_FILE)) {
239 // CSS file for extension was found (use only relative path for now!)
240 $EXT_CSS_FILES[] = $name.".css";
242 // Don't load CSS file
248 if ($cacheMode == "init") {
249 $cacheInstance->add_row(array(
255 'ext_funcs' => $funcs,
256 'ext_active' => $active,
257 'ext_version' => $version,
258 'ext_keep' => $EXT_ALWAYS_ACTIVE,
260 } elseif ($cacheMode == "no") {
261 // Remember this value for later usage
262 $cacheArray['active_extensions'][$name] = $EXT_ALWAYS_ACTIVE;
264 } elseif (!FILE_READABLE($file1)) {
265 // Deleted extension file so we mark it for removal from DB
270 if ($cacheMode == "init") {
272 $cacheInstance->cache_close();
274 // Load more cache files (like admins)
275 require_once(PATH."inc/load_cache.php");
280 SQL_FREERESULT($res_ext_crt);
282 // Load include files
283 if (!empty($INC_POOL[0])) {
284 foreach ($INC_POOL as $inc) {
289 // Uninstall extensions that are no longer in our system
290 if (!empty($DEL[0])) {
291 // Remove extensions from two tables: extension registry and tasks table
292 foreach ($DEL as $name) {
293 // First remove entry from extensions table
294 $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
295 array($name), __FILE__, __LINE__);
297 // Remove (maybe?) found tasks (main task and possible updates
298 $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_task_system WHERE subject LIKE '[%s:] %' AND (task_type='EXTENSION' OR task_type='EXTENSION_UPDATE')",
299 array($name), __FILE__, __LINE__);
302 // I think it's not neccessary to run the optimization function here
303 // because we didn't delete so much data from database. Can you aggree?