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 $cacheArray['active_extensions'] = array();
62 if (EXT_IS_ACTIVE("cache"))
64 // Load cache extension alone
65 include_once(PATH."inc/libs/cache_functions.php");
67 include_once(PATH."inc/extensions/ext-cache.php");
68 switch($cacheInstance->cache_file("extensions", true))
70 case true : $cacheMode = "load"; break;
71 case false: $cacheMode = "init"; break;
74 // Do not recreate cache file when it's switched off!
75 if (($cacheMode == "init") && ($_CONFIG['cache_exts'] == 'N')) $cacheMode = "skip";
78 if ($cacheMode == "load") include(PATH."inc/language/cache_".GET_LANGUAGE().".php");
83 if ($cacheMode == "load")
85 // Load more cache files (like admins)
86 require_once(PATH."inc/load_cache.php");
88 // Re-initialize handler
89 $cacheInstance->cache_file("extensions", true);
91 // Load extension data from cache file
92 $EXT_DUMMY = $cacheInstance->cache_load();
93 foreach ($EXT_DUMMY['ext_name'] as $k=>$name)
95 // Load functions file
96 if ($EXT_DUMMY['ext_funcs'][$k] == 'Y') require_once(PATH."inc/libs/".$name."_functions.php");
99 if ($EXT_DUMMY['ext_lang'][$k] == 'Y')
101 $INC = sprintf(PATH."inc/language/%s_%s.php", $name, GET_LANGUAGE());
102 if (file_exists($INC)) require_once($INC);
106 if ($EXT_DUMMY['ext_css'][$k] == 'Y') $EXT_CSS_FILES[] = "".$name.".css";
108 // Load extension file itself
109 if (($EXT_DUMMY['ext_active'][$k] == 'Y') || ($EXT_DUMMY['ext_keep'][$k] == 'Y') || (IS_ADMIN()))
111 require_once(PATH."inc/extensions/ext-".$name.".php");
114 // Transfer version number and active status
115 $EXT_DUMMY['ext_version'][$name] = $EXT_DUMMY['ext_version'][$k];
116 unset($EXT_DUMMY['ext_version'][$k]);
117 $EXT_DUMMY['ext_active'][$name] = $EXT_DUMMY['ext_active'][$k];
118 unset($EXT_DUMMY['ext_active'][$k]);
119 $EXT_DUMMY['ext_menu'][$name] = $EXT_DUMMY['ext_menu'][$k];
120 unset($EXT_DUMMY['ext_menu'][$k]);
121 $cacheArray['active_extensions']['$name'] = $EXT_DUMMY['ext_keep'][$k];
122 unset($EXT_DUMMY['ext_keep'][$k]);
123 $k2 = $EXT_DUMMY['ext_id'][$k];
124 $EXT_DUMMY['ext_id'][$k2] = $name;
125 if ($k2 != $k) unset($EXT_DUMMY['ext_id'][$k]);
127 // Remove unneccessary data from memory
128 unset($EXT_DUMMY['ext_lang'][$k]);
129 unset($EXT_DUMMY['ext_css'][$k]);
130 unset($EXT_DUMMY['ext_funcs'][$k]);
134 $cacheInstance->cache_close();
136 // Loading cache is done so let's free some memory!
137 unset($EXT_DUMMY['ext_lang']);
138 unset($EXT_DUMMY['ext_keep']);
139 unset($EXT_DUMMY['ext_css']);
140 unset($EXT_DUMMY['ext_funcs']);
141 $cacheArray['extensions'] = $EXT_DUMMY;
144 // No database load needed
145 $res_ext_crt = false;
149 // If current user is not admin load only activated extensions
150 // The admin shall use every available extension for testing purposes
151 if ((!IS_ADMIN()) && ($cacheMode != "init")) $ADD = " WHERE ext_active='Y'";
153 if (GET_EXT_VERSION("sql_patches") >= "0.0.6")
155 // Query with CSS file from DB
156 $res_ext_crt = SQL_QUERY("SELECT id, ext_name, ext_lang_file, ext_has_css, ext_active, ext_version
157 FROM "._MYSQL_PREFIX."_extensions".$ADD."
158 ORDER BY ext_name", __FILE__, __LINE__);
162 // Old obsulete query string
163 $res_ext_crt = SQL_QUERY("SELECT id, ext_name, ext_lang_file, ext_name, ext_active, ext_version
164 FROM "._MYSQL_PREFIX."_extensions".$ADD."
165 ORDER BY ext_name", __FILE__, __LINE__);
169 // Array for removed but not uninstalled extensions
172 // At least one found?
173 if ((SQL_NUMROWS($res_ext_crt) > 0) && (($cacheMode == "init") || ($cacheMode == "no")) && ($CSS != "1") && ($CSS != "-1"))
175 // Load theme management
176 require_once(PATH."inc/theme-manager.php");
178 // If we need to init the cache init it now
179 if ($cacheMode == "init") $cacheInstance->cache_init("EXTENSIONS");
181 // Extensions are registered so we load them
182 while (list($EXT_ID, $name, $lang, $css, $active, $version) = SQL_FETCHROW($res_ext_crt))
185 $result_menu = SQL_QUERY_ESC("SELECT has_menu FROM "._MYSQL_PREFIX."_mod_reg WHERE module='%s' LIMIT 1",
186 array($name), __FILE__, __LINE__);
187 list($menu) = SQL_FETCHROW($result_menu);
188 //* DEBUG: */ echo "*".$name."/".$menu."*<br>";
190 // An empty menu entry will be interpreted as N (no menu) to avoid problems
191 if (empty($menu)) $menu = 'N';
194 $file1 = sprintf(PATH."inc/extensions/ext-%s.php", $name);
195 $file2 = $file1; $EXT_CSS = 'N'; $EXT_ALWAYS_ACTIVE = 'N';
197 // Special functions file
198 $file3 = sprintf(PATH."inc/libs/%s_functions.php", $name);
200 // Does the extension file exists?
201 if (file_exists($file1) && is_readable($file1))
203 // If there's no language file specified we don't need to load one... ;-)
205 // Create language file
206 $file2 = sprintf(PATH."inc/language/%s_%s.php", $lang, GET_LANGUAGE());
209 if (file_exists($file3) && is_readable($file3))
211 // Special functions file
213 require_once($file3);
217 // Don't load functions file
221 // Do we need a language file?
222 if (($file1 != $file2) && (file_exists($file2)) && (is_readable($file2)))
224 // Load language file
230 // Don't load language file
235 if ($name != "sql_patches")
237 // Load extension's file
238 include_once($file1);
242 // KEEP sql_patches ALWAYS ACTIVE!
243 $EXT_ALWAYS_ACTIVE = 'Y';
248 $CSS_FILE = PATH."theme/".GET_CURR_THEME()."/css/".$name.".css";
249 if (file_exists($CSS_FILE))
251 // CSS file for extension was found (use only relative path for now!)
252 $EXT_CSS_FILES[] = $name.".css";
256 // Don't load CSS file
262 if ($cacheMode == "init")
264 $cacheInstance->add_row(array(
270 'ext_funcs' => $funcs,
271 'ext_active' => $active,
272 'ext_version' => $version,
273 'ext_keep' => $EXT_ALWAYS_ACTIVE,
276 elseif ($cacheMode == "no")
278 // Remember this value for later usage
279 $cacheArray['active_extensions'][$name] = $EXT_ALWAYS_ACTIVE;
282 elseif (!file_exists($file1))
284 // Deleted extension file so we mark it for removal from DB
289 if ($cacheMode == "init")
292 $cacheInstance->cache_close();
294 // Load more cache files (like admins)
295 require_once(PATH."inc/load_cache.php");
300 SQL_FREERESULT($res_ext_crt);
302 // Load include files
303 if (!empty($INC_POOL[0]))
305 foreach ($INC_POOL as $inc)
311 // Uninstall extensions that are no longer in our system
314 // Remove extensions from two tables: extension registry and tasks table
315 foreach ($DEL as $name)
317 // First remove entry from extensions table
318 $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
319 array($name), __FILE__, __LINE__);
321 // Remove (maybe?) found tasks (main task and possible updates
322 $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_task_system WHERE subject LIKE '[%s:] %' AND (task_type='EXTENSION' OR task_type='EXTENSION_UPDATE')",
323 array($name), __FILE__, __LINE__);
326 // I think it's not neccessary to run the optimization function here
327 // because we didn't delete so much data from database. Can you aggree?