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 $GLOBALS['cache_instance'] = null;
47 $GLOBALS['cache_array'] = array();
49 // Skip loading extensions
50 if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing'))) return;
52 // Initialize array for "always keep active extensions"
53 $GLOBALS['cache_array']['active_extensions'] = array();
55 // By default no cache is set
56 $GLOBALS['cacheMode'] = "no";
58 // Load sql_patchrs extension alone
59 LOAD_EXTENSION("sql_patches");
64 if (EXT_IS_ACTIVE("cache")) {
65 // Load cache extension alone
66 LOAD_EXTENSION("cache");
68 // Check extension cache
69 switch (($GLOBALS['cache_instance']->loadCacheFile("extensions", true)) && ($GLOBALS['cache_instance']->extensionVersionMatches("sql_patches"))) {
70 case true : $GLOBALS['cacheMode'] = "load"; break;
71 case false: $GLOBALS['cacheMode'] = "init"; break;
74 // Do we need to init the cache?
75 if (($GLOBALS['cacheMode'] == "init") && (getConfig('cache_exts') == "Y")) {
77 $GLOBALS['cache_instance']->init("EXTENSIONS");
78 $GLOBALS['cache_instance']->storeExtensionVersion("sql_patches");
79 } elseif (getConfig('cache_exts') != "Y") {
80 // Cache will not be created for extensions
81 $GLOBALS['cacheMode'] = "skip";
86 if ($GLOBALS['cacheMode'] == "load") {
90 // Re-initialize handler
91 $GLOBALS['cache_instance']->loadCacheFile("extensions", true);
93 // Load extension data from cache file
94 $EXT_DUMMY = $GLOBALS['cache_instance']->getArrayFromCache();
96 // Is the cache file fine?
97 if (!isset($EXT_DUMMY['ext_name'])) {
98 // Cache file is damaged so kill it
99 $GLOBALS['cache_instance']->destroyCacheFile();
106 // Begin with the cache preparation of extensions
107 $EXT_NAMES = array();
108 foreach ($EXT_DUMMY['ext_name'] as $k => $name) {
110 if ($EXT_DUMMY['ext_css'][$k] == "Y") $EXT_CSS_FILES[] = "".$name.".css";
112 // Load extension file itself
113 if ((($EXT_DUMMY['ext_active'][$k] == "Y") || ($EXT_DUMMY['ext_keep'][$k] == "Y") || (IS_ADMIN())) && (!in_array($name, array("sql_patches", "cache")))) {
118 $EXT_DUMMY['ext_version'][$name] = $EXT_DUMMY['ext_version'][$k];
119 unset($EXT_DUMMY['ext_version'][$k]);
121 // Extension is active
122 $EXT_DUMMY['ext_active'][$name] = $EXT_DUMMY['ext_active'][$k];
123 unset($EXT_DUMMY['ext_active'][$k]);
126 $EXT_DUMMY['ext_menu'][$name] = $EXT_DUMMY['ext_menu'][$k];
127 unset($EXT_DUMMY['ext_menu'][$k]);
130 $EXT_DUMMY['ext_id'][$name] = $EXT_DUMMY['ext_id'][$k];
131 $id = $EXT_DUMMY['ext_id'][$name];
132 unset($EXT_DUMMY['ext_id'][$k]);
135 $EXT_NAMES[$id] = $name;
137 // Add deprecated flag (defaults to "not deprecated")
138 $EXT_DUMMY['ext_deprecated'][$name] = "N";
140 // Mark it as active extension
141 $GLOBALS['cache_array']['active_extensions']['$name'] = $EXT_DUMMY['ext_keep'][$k];
142 unset($EXT_DUMMY['ext_keep'][$k]);
144 // Remove unneccessary data from memory
145 unset($EXT_DUMMY['ext_css'][$k]);
148 // Write dummy array back
149 $EXT_DUMMY['ext_name'] = $EXT_NAMES;
152 // Loading cache is done so let's free some memory!
153 unset($EXT_DUMMY['ext_keep']);
154 unset($EXT_DUMMY['ext_css']);
155 $GLOBALS['cache_array']['extensions'] = $EXT_DUMMY;
158 // No database load needed
159 $res_ext_crt = false;
161 // Load all extension files
162 foreach ($EXT_POOL as $ext) {
163 LOAD_EXTENSION($ext);
166 // Init filter system
167 INIT_FILTER_SYSTEM();
169 // Load more cache files (like admins)
170 LOAD_INC_ONCE("inc/load_cache.php");
175 // If current user is not admin load only activated extensions. But load
176 // them all if we are going to init the cache files. The admin shall use
177 // every available extension for testing purposes.
178 if ((!IS_ADMIN()) && ($GLOBALS['cacheMode'] != "init")) $ADD = " WHERE ext_active='Y'";
180 if (GET_EXT_VERSION("sql_patches") >= "0.0.6") {
181 // Query with CSS file from DB
182 $res_ext_crt = SQL_QUERY("SELECT id AS ext_id, ext_name, ext_has_css AS ext_css, ext_active, ext_version
183 FROM `{!_MYSQL_PREFIX!}_extensions`".$ADD."
184 ORDER BY ext_name", __FILE__, __LINE__);
186 // Old obsolete query string
187 $res_ext_crt = SQL_QUERY("SELECT id AS ext_id, ext_name, ext_name, ext_active, ext_version
188 FROM `{!_MYSQL_PREFIX!}_extensions`".$ADD."
189 ORDER BY ext_name", __FILE__, __LINE__);
193 // Array for removed but not uninstalled extensions
196 // At least one found?
197 if ((SQL_NUMROWS($res_ext_crt) > 0) && ((($GLOBALS['cacheMode'] == "init") && ($GLOBALS['output_mode'] != "1") && ($GLOBALS['output_mode'] != "-1")) || ($GLOBALS['cacheMode'] == "no"))) {
198 // Load session management
199 LOAD_INC_ONCE("inc/session.php");
201 // Extensions are registered so we load them
202 while ($content = SQL_FETCHARRAY($res_ext_crt)) {
204 $content['ext_menu'] = "N";
205 if (MODULE_HAS_MENU($content['ext_name'], true)) {
206 $content['ext_menu'] = "Y";
209 // Generate FQFN for extension
210 $FQFN = sprintf("%sinc/extensions/ext-%s.php", constant('PATH'), $content['ext_name']);
212 // Does the extension file exists?
213 if (FILE_READABLE($FQFN)) {
214 // By default no extension is always active, except sql_patches
215 $EXT_ALWAYS_ACTIVE = "N";
218 if (($content['ext_name'] != "sql_patches") && (($content['ext_name'] != "cache") || (!EXT_IS_ACTIVE("cache")))) {
220 LOAD_EXTENSION($content['ext_name']);
222 // Keep sql_patches always active
223 $EXT_ALWAYS_ACTIVE = "Y";
226 // Transfer EXT_ALWAYS_ACTIVE flag
227 $content['ext_keep'] = $EXT_ALWAYS_ACTIVE;
229 // CSS file handling:
230 if ((!isset($content['ext_css'])) || ($content['ext_css'] == "Y")) {
231 // Create FQFN for the CSS file
232 $GLOBALS['output_mode']_FILE = sprintf("%stheme/%s/css/%s.css", constant('PATH'), GET_CURR_THEME(), $content['ext_name']);
234 // Is the file there?
235 if (FILE_READABLE($GLOBALS['output_mode']_FILE)) {
236 // CSS file for extension was found (use only relative path for now!)
237 $EXT_CSS_FILES[] = $content['ext_name'].".css";
238 $content['ext_css'] = "Y";
240 // Don't load CSS file
241 $content['ext_css'] = "N";
246 if ($GLOBALS['cacheMode'] == "init") {
248 $GLOBALS['cache_instance']->addRow($content);
249 } elseif ($GLOBALS['cacheMode'] == "no") {
250 // Remember this value for later usage
251 $GLOBALS['cache_array']['active_extensions'][$content['ext_name']] = $EXT_ALWAYS_ACTIVE;
253 } elseif (!FILE_READABLE($FQFN)) {
254 // Deleted extension file so we mark it for removal from DB
255 $DEL[] = $content['ext_name'];
259 // Init filter system
260 INIT_FILTER_SYSTEM();
262 if ($GLOBALS['cacheMode'] == "init") {
264 $GLOBALS['cache_instance']->finalize();
266 // Load more cache files (like admins)
267 LOAD_INC_ONCE("inc/load_cache.php");
271 SQL_FREERESULT($res_ext_crt);
272 } elseif (!EXT_IS_ACTIVE("cache")) {
273 // Init filter system even when there are no extensions installed. #16
274 INIT_FILTER_SYSTEM();
278 RUN_FILTER('load_includes', $INC_POOL);
280 // Uninstall extensions that are no longer in our system
281 if (!empty($DEL[0])) {
282 // Remove extensions from two tables: extension registry and tasks table
283 foreach ($DEL as $del_ext) {
284 // First remove entry from extensions table
285 SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM `{!_MYSQL_PREFIX!}_extensions` WHERE ext_name='%s' LIMIT 1",
286 array($del_ext), __FILE__, __LINE__);
288 // Remove (maybe?) found tasks (main task and possible updates
289 SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM `{!_MYSQL_PREFIX!}_task_system` WHERE subject='[%s:]' AND (task_type='EXTENSION' OR task_type='EXTENSION_UPDATE')",
290 array($del_ext), __FILE__, __LINE__);
293 // I think it's not neccessary to run the optimization function here
294 // because we didn't delete so much data from database. Can you aggree?