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";
44 // Init cache instance and array
45 $GLOBALS['cache_instance'] = null;
46 $GLOBALS['cache_array'] = array();
48 // Skip loading extensions
49 if ((!isInstalled()) || (isInstalling())) {
50 // Init filter system here
57 // Initialize array for "always keep active extensions"
58 $GLOBALS['cache_array']['active_extensions'] = array();
60 // By default no cache is set
61 $GLOBALS['cacheMode'] = "no";
63 // Load sql_patchrs extension alone
64 if (!LOAD_EXTENSION("sql_patches")) {
65 // Could not load sql_patches! ARGH!!!
66 trigger_error("Cannot load extension sql_patches.");
69 // Init inc pool array
75 if (EXT_IS_ACTIVE("cache")) {
76 // Load cache extension alone
77 if (!LOAD_EXTENSION("cache")) {
78 // Extension 'cache' was not loaded
79 trigger_error("Cannot load extension cache.");
82 // Check extension cache
83 switch (($GLOBALS['cache_instance']->loadCacheFile("extensions", true)) && ($GLOBALS['cache_instance']->extensionVersionMatches("sql_patches"))) {
84 case true : $GLOBALS['cacheMode'] = "load"; break;
85 case false: $GLOBALS['cacheMode'] = "init"; break;
88 // Do we need to init the cache?
89 if (($GLOBALS['cacheMode'] == "init") && (getConfig('cache_exts') == "Y")) {
91 $GLOBALS['cache_instance']->init("EXTENSIONS");
92 $GLOBALS['cache_instance']->storeExtensionVersion("sql_patches");
93 } elseif (getConfig('cache_exts') != "Y") {
94 // Cache will not be created for extensions
95 $GLOBALS['cacheMode'] = "skip";
100 if ($GLOBALS['cacheMode'] == "load") {
101 // Init include array
104 // Re-initialize handler
105 $GLOBALS['cache_instance']->loadCacheFile("extensions", true);
107 // Load extension data from cache file
108 $EXT_DUMMY = $GLOBALS['cache_instance']->getArrayFromCache();
110 // Is the cache file fine?
111 if (!isset($EXT_DUMMY['ext_name'])) {
112 // Cache file is damaged so kill it
113 $GLOBALS['cache_instance']->destroyCacheFile();
120 // Begin with the cache preparation of extensions
121 $EXT_NAMES = array();
122 foreach ($EXT_DUMMY['ext_name'] as $k => $name) {
124 if ($EXT_DUMMY['ext_css'][$k] == "Y") EXT_ADD_CSS_FILE("".$name.".css");
126 // Load extension file itself
127 if ((($EXT_DUMMY['ext_active'][$k] == "Y") || ($EXT_DUMMY['ext_keep'][$k] == "Y") || (IS_ADMIN())) && (!in_array($name, array("sql_patches", "cache")))) {
132 $EXT_DUMMY['ext_version'][$name] = $EXT_DUMMY['ext_version'][$k];
133 unset($EXT_DUMMY['ext_version'][$k]);
135 // Extension is active
136 $EXT_DUMMY['ext_active'][$name] = $EXT_DUMMY['ext_active'][$k];
137 unset($EXT_DUMMY['ext_active'][$k]);
140 $EXT_DUMMY['ext_menu'][$name] = $EXT_DUMMY['ext_menu'][$k];
141 unset($EXT_DUMMY['ext_menu'][$k]);
144 $EXT_DUMMY['ext_id'][$name] = $EXT_DUMMY['ext_id'][$k];
145 $id = $EXT_DUMMY['ext_id'][$name];
146 unset($EXT_DUMMY['ext_id'][$k]);
149 $EXT_NAMES[$id] = $name;
151 // Add deprecated flag (defaults to "not deprecated")
152 $EXT_DUMMY['ext_deprecated'][$name] = "N";
154 // Mark it as active extension
155 $GLOBALS['cache_array']['active_extensions']['$name'] = $EXT_DUMMY['ext_keep'][$k];
156 unset($EXT_DUMMY['ext_keep'][$k]);
158 // Remove unneccessary data from memory
159 unset($EXT_DUMMY['ext_css'][$k]);
162 // Write dummy array back
163 $EXT_DUMMY['ext_name'] = $EXT_NAMES;
166 // Loading cache is done so let's free some memory!
167 unset($EXT_DUMMY['ext_keep']);
168 unset($EXT_DUMMY['ext_css']);
169 $GLOBALS['cache_array']['extensions'] = $EXT_DUMMY;
172 // No database load needed
173 $res_ext_crt = false;
175 // Load all extension files
176 foreach ($EXT_POOL as $ext) {
177 LOAD_EXTENSION($ext);
180 // Init filter system
181 INIT_FILTER_SYSTEM();
183 // Load more cache files (like admins)
184 LOAD_INC_ONCE("inc/load_cache.php");
189 // If current user is not admin load only activated extensions. But load
190 // them all if we are going to init the cache files. The admin shall use
191 // every available extension for testing purposes.
192 if ((!IS_ADMIN()) && ($GLOBALS['cacheMode'] != "init")) $ADD = " WHERE ext_active='Y'";
194 if (GET_EXT_VERSION("sql_patches") >= "0.0.6") {
195 // Query with CSS file from DB
196 $res_ext_crt = SQL_QUERY("SELECT id AS ext_id, ext_name, ext_has_css AS ext_css, ext_active, ext_version
197 FROM `{!_MYSQL_PREFIX!}_extensions`".$ADD."
198 ORDER BY ext_name", __FILE__, __LINE__);
200 // Old obsolete query string
201 $res_ext_crt = SQL_QUERY("SELECT id AS ext_id, ext_name, ext_name, ext_active, ext_version
202 FROM `{!_MYSQL_PREFIX!}_extensions`".$ADD."
203 ORDER BY ext_name", __FILE__, __LINE__);
207 // Array for removed but not uninstalled extensions
210 // At least one found?
211 if ((SQL_NUMROWS($res_ext_crt) > 0) && ((($GLOBALS['cacheMode'] == "init") && ($GLOBALS['output_mode'] != "1") && ($GLOBALS['output_mode'] != "-1")) || ($GLOBALS['cacheMode'] == "no"))) {
212 // Extensions are registered so we load them
213 while ($content = SQL_FETCHARRAY($res_ext_crt)) {
215 $content['ext_menu'] = "N";
216 if (MODULE_HAS_MENU($content['ext_name'], true)) {
217 $content['ext_menu'] = "Y";
220 // Generate FQFN for extension
221 $FQFN = sprintf("%sinc/extensions/ext-%s.php", constant('PATH'), $content['ext_name']);
223 // Does the extension file exists?
224 if (FILE_READABLE($FQFN)) {
225 // By default no extension is always active, except sql_patches
226 EXT_SET_ALWAYS_ACTIVE("N");
229 if (($content['ext_name'] != "sql_patches") && (($content['ext_name'] != "cache") || (!EXT_IS_ACTIVE("cache")))) {
231 LOAD_EXTENSION($content['ext_name']);
233 // Keep sql_patches always active
234 EXT_SET_ALWAYS_ACTIVE("Y");
237 // Transfer EXT_ALWAYS_ACTIVE flag
238 $content['ext_keep'] = EXT_GET_ALWAYS_ACTIVE();
240 // CSS file handling:
241 if ((!isset($content['ext_css'])) || ($content['ext_css'] == "Y")) {
242 // Create FQFN for the CSS file
243 $FQFN = sprintf("%stheme/%s/css/%s.css", constant('PATH'), GET_CURR_THEME(), $content['ext_name']);
245 // Is the file there?
246 if (FILE_READABLE($FQFN)) {
247 // CSS file for extension was found (use only relative path for now!)
248 EXT_ADD_CSS_FILE($content['ext_name'].".css");
249 $content['ext_css'] = "Y";
251 // Don't load CSS file
252 $content['ext_css'] = "N";
257 if ($GLOBALS['cacheMode'] == "init") {
259 $GLOBALS['cache_instance']->addRow($content);
260 } elseif ($GLOBALS['cacheMode'] == "no") {
261 // Remember this value for later usage
262 $GLOBALS['cache_array']['active_extensions'][$content['ext_name']] = EXT_GET_ALWAYS_ACTIVE();
264 } elseif (!FILE_READABLE($FQFN)) {
265 // Deleted extension file so we mark it for removal from DB
266 $DEL[] = $content['ext_name'];
270 // Init filter system
271 INIT_FILTER_SYSTEM();
273 if ($GLOBALS['cacheMode'] == "init") {
275 $GLOBALS['cache_instance']->finalize();
277 // Load more cache files (like admins)
278 LOAD_INC_ONCE("inc/load_cache.php");
282 SQL_FREERESULT($res_ext_crt);
283 } elseif (!EXT_IS_ACTIVE("cache")) {
284 // Init filter system even when there are no extensions installed. #16
285 INIT_FILTER_SYSTEM();
289 RUN_FILTER('load_includes', $INC_POOL);
291 // Uninstall extensions that are no longer in our system
292 if (!empty($DEL[0])) {
293 // Remove extensions from two tables: extension registry and tasks table
294 foreach ($DEL as $del_ext) {
295 // First remove entry from extensions table
296 SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM `{!_MYSQL_PREFIX!}_extensions` WHERE ext_name='%s' LIMIT 1",
297 array($del_ext), __FILE__, __LINE__);
299 // Remove (maybe?) found tasks (main task and possible updates
300 SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM `{!_MYSQL_PREFIX!}_task_system` WHERE subject='[%s:]' AND (task_type='EXTENSION' OR task_type='EXTENSION_UPDATE')",
301 array($del_ext), __FILE__, __LINE__);
304 // I think it's not neccessary to run the optimization function here
305 // because we didn't delete so much data from database. Can you aggree?