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_exists(PATH."inc/extensions/ext-sql_patches.php") && is_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");
81 if ($cacheMode == "load") {
82 // Load more cache files (like admins)
83 require_once(PATH."inc/load_cache.php");
85 // Re-initialize handler
86 $cacheInstance->cache_file("extensions", true);
88 // Load extension data from cache file
89 $EXT_DUMMY = $cacheInstance->cache_load();
90 foreach ($EXT_DUMMY['ext_name'] as $k=>$name) {
91 // Load functions file
92 if ($EXT_DUMMY['ext_funcs'][$k] == "Y") require_once(PATH."inc/libs/".$name."_functions.php");
95 if ($EXT_DUMMY['ext_lang'][$k] == "Y") {
96 $INC = sprintf("%sinc/language/%s_%s.php", PATH, $name, GET_LANGUAGE());
97 if (file_exists($INC)) require_once($INC);
101 if ($EXT_DUMMY['ext_css'][$k] == "Y") $EXT_CSS_FILES[] = "".$name.".css";
103 // Load extension file itself
104 if (($EXT_DUMMY['ext_active'][$k] == "Y") || ($EXT_DUMMY['ext_keep'][$k] == "Y") || (IS_ADMIN())) {
105 require_once(PATH."inc/extensions/ext-".$name.".php");
108 // Transfer version number and active status
109 $EXT_DUMMY['ext_version'][$name] = $EXT_DUMMY['ext_version'][$k];
110 unset($EXT_DUMMY['ext_version'][$k]);
111 $EXT_DUMMY['ext_active'][$name] = $EXT_DUMMY['ext_active'][$k];
112 unset($EXT_DUMMY['ext_active'][$k]);
113 $EXT_DUMMY['ext_menu'][$name] = $EXT_DUMMY['ext_menu'][$k];
114 unset($EXT_DUMMY['ext_menu'][$k]);
115 $cacheArray['active_extensions']['$name'] = $EXT_DUMMY['ext_keep'][$k];
116 unset($EXT_DUMMY['ext_keep'][$k]);
117 $k2 = $EXT_DUMMY['ext_id'][$k];
118 $EXT_DUMMY['ext_id'][$k2] = $name;
119 if ($k2 != $k) unset($EXT_DUMMY['ext_id'][$k]);
121 // Remove unneccessary data from memory
122 unset($EXT_DUMMY['ext_lang'][$k]);
123 unset($EXT_DUMMY['ext_css'][$k]);
124 unset($EXT_DUMMY['ext_funcs'][$k]);
128 $cacheInstance->cache_close();
130 // Loading cache is done so let's free some memory!
131 unset($EXT_DUMMY['ext_lang']);
132 unset($EXT_DUMMY['ext_keep']);
133 unset($EXT_DUMMY['ext_css']);
134 unset($EXT_DUMMY['ext_funcs']);
135 $cacheArray['extensions'] = $EXT_DUMMY;
138 // No database load needed
139 $res_ext_crt = false;
141 // If current user is not admin load only activated extensions
142 // The admin shall use every available extension for testing purposes
143 if ((!IS_ADMIN()) && ($cacheMode != "init")) $ADD = " WHERE ext_active='Y'";
145 if (GET_EXT_VERSION("sql_patches") >= "0.0.6") {
146 // Query with CSS file from DB
147 $res_ext_crt = SQL_QUERY("SELECT id, ext_name, ext_lang_file, ext_has_css, ext_active, ext_version
148 FROM "._MYSQL_PREFIX."_extensions".$ADD."
149 ORDER BY ext_name", __FILE__, __LINE__);
151 // Old obsulete query string
152 $res_ext_crt = SQL_QUERY("SELECT id, ext_name, ext_lang_file, ext_name, ext_active, ext_version
153 FROM "._MYSQL_PREFIX."_extensions".$ADD."
154 ORDER BY ext_name", __FILE__, __LINE__);
158 // Array for removed but not uninstalled extensions
161 // At least one found?
162 if ((SQL_NUMROWS($res_ext_crt) > 0) && (($cacheMode == "init") || ($cacheMode == "no")) && ($CSS != "1") && ($CSS != "-1"))
164 // Load theme management
165 require_once(PATH."inc/theme-manager.php");
167 // If we need to init the cache init it now
168 if ($cacheMode == "init") $cacheInstance->cache_init("EXTENSIONS");
170 // Extensions are registered so we load them
171 while (list($EXT_ID, $name, $lang, $css, $active, $version) = SQL_FETCHROW($res_ext_crt))
174 $result_menu = SQL_QUERY_ESC("SELECT has_menu FROM "._MYSQL_PREFIX."_mod_reg WHERE module='%s' LIMIT 1",
175 array($name), __FILE__, __LINE__);
176 list($menu) = SQL_FETCHROW($result_menu);
177 //* DEBUG: */ echo "*".$name."/".$menu."*<br>";
179 // An empty menu entry will be interpreted as N (no menu) to avoid problems
180 if (empty($menu)) $menu = "N";
183 $file1 = sprintf("%sinc/extensions/ext-%s.php", PATH, $name);
184 $file2 = $file1; $EXT_CSS = "N"; $EXT_ALWAYS_ACTIVE = "N";
186 // Special functions file
187 $file3 = sprintf("%sinc/libs/%s_functions.php", PATH, $name);
189 // Does the extension file exists?
190 if (file_exists($file1) && is_readable($file1))
192 // If there's no language file specified we don't need to load one... ;-)
194 // Create language file
195 $file2 = sprintf("%sinc/language/%s_%s.php", PATH, $lang, GET_LANGUAGE());
198 if (file_exists($file3) && is_readable($file3))
200 // Special functions file
202 require_once($file3);
206 // Don't load functions file
210 // Do we need a language file?
211 if (($file1 != $file2) && (file_exists($file2)) && (is_readable($file2)))
213 // Load language file
219 // Don't load language file
224 if ($name != "sql_patches")
226 // Load extension's file
227 include_once($file1);
231 // KEEP sql_patches ALWAYS ACTIVE!
232 $EXT_ALWAYS_ACTIVE = "Y";
237 $CSS_FILE = sprintf("%stheme/%s/css/%s.css", PATH, GET_CURR_THEME(), $name);
238 if (file_exists($CSS_FILE))
240 // CSS file for extension was found (use only relative path for now!)
241 $EXT_CSS_FILES[] = $name.".css";
245 // Don't load CSS file
251 if ($cacheMode == "init")
253 $cacheInstance->add_row(array(
259 'ext_funcs' => $funcs,
260 'ext_active' => $active,
261 'ext_version' => $version,
262 'ext_keep' => $EXT_ALWAYS_ACTIVE,
265 elseif ($cacheMode == "no")
267 // Remember this value for later usage
268 $cacheArray['active_extensions'][$name] = $EXT_ALWAYS_ACTIVE;
271 elseif (!file_exists($file1))
273 // Deleted extension file so we mark it for removal from DB
278 if ($cacheMode == "init")
281 $cacheInstance->cache_close();
283 // Load more cache files (like admins)
284 require_once(PATH."inc/load_cache.php");
289 SQL_FREERESULT($res_ext_crt);
291 // Load include files
292 if (!empty($INC_POOL[0]))
294 foreach ($INC_POOL as $inc)
300 // Uninstall extensions that are no longer in our system
303 // Remove extensions from two tables: extension registry and tasks table
304 foreach ($DEL as $name)
306 // First remove entry from extensions table
307 $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
308 array($name), __FILE__, __LINE__);
310 // Remove (maybe?) found tasks (main task and possible updates
311 $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_task_system WHERE subject LIKE '[%s:] %' AND (task_type='EXTENSION' OR task_type='EXTENSION_UPDATE')",
312 array($name), __FILE__, __LINE__);
315 // I think it's not neccessary to run the optimization function here
316 // because we didn't delete so much data from database. Can you aggree?