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 (!defined('__SECURITY')) {
36 $INC = substr(dirname(__FILE__), 0, strpos(dirname(__FILE__), "/inc") + 4) . "/security.php";
41 global $EXT_CSS_FILES;
42 $EXT_CSS_FILES = array();
45 // Init cache instance and array
46 global $cacheInstance, $cacheArray;
47 $cacheInstance = null;
48 $cacheArray = array();
50 // Skip loading extensions
51 if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing'))) return;
53 // Initialize array for "always keep active extensions"
54 $cacheArray['active_extensions'] = array();
56 // By default no cache is set
59 // Load sql_patchrs extension alone
60 LOAD_EXTENSION("sql_patches");
65 if (EXT_IS_ACTIVE("cache")) {
66 // Load cache extension alone
67 LOAD_EXTENSION("cache");
69 // Check extension cache
70 switch (($cacheInstance->loadCacheFile("extensions", true)) && ($cacheInstance->extensionVersionMatches("sql_patches"))) {
71 case true : $cacheMode = "load"; break;
72 case false: $cacheMode = "init"; break;
75 // Do we need to init the cache?
76 if (($cacheMode == "init") && (getConfig('cache_exts') == "Y")) {
78 $cacheInstance->init("EXTENSIONS");
79 $cacheInstance->storeExtensionVersion("sql_patches");
80 } elseif (getConfig('cache_exts') != "Y") {
81 // Cache will not be created for extensions
87 if ($cacheMode == "load") {
91 // Re-initialize handler
92 $cacheInstance->loadCacheFile("extensions", true);
94 // Load extension data from cache file
95 $EXT_DUMMY = $cacheInstance->getArrayFromCache();
97 // Is the cache file fine?
98 if (!isset($EXT_DUMMY['ext_name'])) {
99 // Cache file is damaged so kill it
100 $cacheInstance->destroyCacheFile();
107 // Begin with the cache preparation of extensions
108 $EXT_NAMES = array();
109 foreach ($EXT_DUMMY['ext_name'] as $k => $name) {
111 if ($EXT_DUMMY['ext_css'][$k] == "Y") $EXT_CSS_FILES[] = "".$name.".css";
113 // Load extension file itself
114 if ((($EXT_DUMMY['ext_active'][$k] == "Y") || ($EXT_DUMMY['ext_keep'][$k] == "Y") || (IS_ADMIN())) && (!in_array($name, array("sql_patches", "cache")))) {
119 $EXT_DUMMY['ext_version'][$name] = $EXT_DUMMY['ext_version'][$k];
120 unset($EXT_DUMMY['ext_version'][$k]);
122 // Extension is active
123 $EXT_DUMMY['ext_active'][$name] = $EXT_DUMMY['ext_active'][$k];
124 unset($EXT_DUMMY['ext_active'][$k]);
127 $EXT_DUMMY['ext_menu'][$name] = $EXT_DUMMY['ext_menu'][$k];
128 unset($EXT_DUMMY['ext_menu'][$k]);
131 $EXT_DUMMY['ext_id'][$name] = $EXT_DUMMY['ext_id'][$k];
132 $id = $EXT_DUMMY['ext_id'][$name];
133 unset($EXT_DUMMY['ext_id'][$k]);
136 $EXT_NAMES[$id] = $name;
138 // Add deprecated flag (defaults to "not deprecated")
139 $EXT_DUMMY['ext_deprecated'][$name] = "N";
141 // Mark it as active extension
142 $cacheArray['active_extensions']['$name'] = $EXT_DUMMY['ext_keep'][$k];
143 unset($EXT_DUMMY['ext_keep'][$k]);
145 // Remove unneccessary data from memory
146 unset($EXT_DUMMY['ext_css'][$k]);
149 // Write dummy array back
150 $EXT_DUMMY['ext_name'] = $EXT_NAMES;
153 // Loading cache is done so let's free some memory!
154 unset($EXT_DUMMY['ext_keep']);
155 unset($EXT_DUMMY['ext_css']);
156 $cacheArray['extensions'] = $EXT_DUMMY;
159 // No database load needed
160 $res_ext_crt = false;
162 // Load all extension files
163 foreach ($EXT_POOL as $ext) {
164 LOAD_EXTENSION($ext);
167 // Init filter system
168 INIT_FILTER_SYSTEM();
170 // Load more cache files (like admins)
171 LOAD_INC_ONCE("inc/load_cache.php");
176 // If current user is not admin load only activated extensions. But load
177 // them all if we are going to init the cache files. The admin shall use
178 // every available extension for testing purposes.
179 if ((!IS_ADMIN()) && ($cacheMode != "init")) $ADD = " WHERE ext_active='Y'";
181 if (GET_EXT_VERSION("sql_patches") >= "0.0.6") {
182 // Query with CSS file from DB
183 $res_ext_crt = SQL_QUERY("SELECT id AS ext_id, ext_name, ext_has_css AS ext_css, ext_active, ext_version
184 FROM `{!_MYSQL_PREFIX!}_extensions`".$ADD."
185 ORDER BY ext_name", __FILE__, __LINE__);
187 // Old obsolete query string
188 $res_ext_crt = SQL_QUERY("SELECT id AS ext_id, ext_name, ext_name, ext_active, ext_version
189 FROM `{!_MYSQL_PREFIX!}_extensions`".$ADD."
190 ORDER BY ext_name", __FILE__, __LINE__);
194 // Array for removed but not uninstalled extensions
197 // At least one found?
198 if ((SQL_NUMROWS($res_ext_crt) > 0) && ((($cacheMode == "init") && ($CSS != "1") && ($CSS != "-1")) || ($cacheMode == "no"))) {
199 // Load session management
200 LOAD_INC_ONCE("inc/session.php");
202 // Extensions are registered so we load them
203 while ($content = SQL_FETCHARRAY($res_ext_crt)) {
205 $content['ext_menu'] = "N";
206 if (MODULE_HAS_MENU($content['ext_name'], true)) {
207 $content['ext_menu'] = "Y";
210 // Generate FQFN for extension
211 $FQFN = sprintf("%sinc/extensions/ext-%s.php", constant('PATH'), $content['ext_name']);
213 // Does the extension file exists?
214 if (FILE_READABLE($FQFN)) {
215 // By default no extension is always active, except sql_patches
216 $EXT_ALWAYS_ACTIVE = "N";
219 if (($content['ext_name'] != "sql_patches") && (($content['ext_name'] != "cache") || (!EXT_IS_ACTIVE("cache")))) {
221 LOAD_EXTENSION($content['ext_name']);
223 // Keep sql_patches always active
224 $EXT_ALWAYS_ACTIVE = "Y";
227 // Transfer EXT_ALWAYS_ACTIVE flag
228 $content['ext_keep'] = $EXT_ALWAYS_ACTIVE;
230 // CSS file handling:
231 if ((!isset($content['ext_css'])) || ($content['ext_css'] == "Y")) {
232 // Create FQFN for the CSS file
233 $CSS_FILE = sprintf("%stheme/%s/css/%s.css", constant('PATH'), GET_CURR_THEME(), $content['ext_name']);
235 // Is the file there?
236 if (FILE_READABLE($CSS_FILE)) {
237 // CSS file for extension was found (use only relative path for now!)
238 $EXT_CSS_FILES[] = $content['ext_name'].".css";
239 $content['ext_css'] = "Y";
241 // Don't load CSS file
242 $content['ext_css'] = "N";
247 if ($cacheMode == "init") {
249 $cacheInstance->addRow($content);
250 } elseif ($cacheMode == "no") {
251 // Remember this value for later usage
252 $cacheArray['active_extensions'][$content['ext_name']] = $EXT_ALWAYS_ACTIVE;
254 } elseif (!FILE_READABLE($FQFN)) {
255 // Deleted extension file so we mark it for removal from DB
256 $DEL[] = $content['ext_name'];
260 // Init filter system
261 INIT_FILTER_SYSTEM();
263 if ($cacheMode == "init") {
265 $cacheInstance->finalize();
267 // Load more cache files (like admins)
268 LOAD_INC_ONCE("inc/load_cache.php");
272 SQL_FREERESULT($res_ext_crt);
273 } elseif (!EXT_IS_ACTIVE("cache")) {
274 // Init filter system even when there are no extensions installed. #16
275 INIT_FILTER_SYSTEM();
279 RUN_FILTER('load_includes', $INC_POOL);
281 // Uninstall extensions that are no longer in our system
282 if (!empty($DEL[0])) {
283 // Remove extensions from two tables: extension registry and tasks table
284 foreach ($DEL as $del_ext) {
285 // First remove entry from extensions table
286 SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM `{!_MYSQL_PREFIX!}_extensions` WHERE ext_name='%s' LIMIT 1",
287 array($del_ext), __FILE__, __LINE__);
289 // Remove (maybe?) found tasks (main task and possible updates
290 SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM `{!_MYSQL_PREFIX!}_task_system` WHERE subject='[%s:]' AND (task_type='EXTENSION' OR task_type='EXTENSION_UPDATE')",
291 array($del_ext), __FILE__, __LINE__);
294 // I think it's not neccessary to run the optimization function here
295 // because we didn't delete so much data from database. Can you aggree?