0.2.1/inc/load_extensions.php

   1 <?php\r
   2 /************************************************************************\r
   3  * MXChange v0.2.1                                    Start: 06/26/2004 *\r
   4  * ===============                              Last change: 07/01/2005 *\r
   5  *                                                                      *\r
   6  * -------------------------------------------------------------------- *\r
   7  * File              : load_extensions.php                              *\r
   8  * -------------------------------------------------------------------- *\r
   9  * Short description : Load all extensions                              *\r
  10  * -------------------------------------------------------------------- *\r
  11  * Kurzbeschreibung  : Alle Erweiterungen laden                         *\r
  12  * -------------------------------------------------------------------- *\r
  13  *                                                                      *\r
  14  * -------------------------------------------------------------------- *\r
  15  * Copyright (c) 2003 - 2008 by Roland Haeder                           *\r
  16  * For more information visit: http://www.mxchange.org                  *\r
  17  *                                                                      *\r
  18  * This program is free software; you can redistribute it and/or modify *\r
  19  * it under the terms of the GNU General Public License as published by *\r
  20  * the Free Software Foundation; either version 2 of the License, or    *\r
  21  * (at your option) any later version.                                  *\r
  22  *                                                                      *\r
  23  * This program is distributed in the hope that it will be useful,      *\r
  24  * but WITHOUT ANY WARRANTY; without even the implied warranty of       *\r
  25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *\r
  26  * GNU General Public License for more details.                         *\r
  27  *                                                                      *\r
  28  * You should have received a copy of the GNU General Public License    *\r
  29  * along with this program; if not, write to the Free Software          *\r
  30  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,               *\r
  31  * MA  02110-1301  USA                                                  *\r
  32  ************************************************************************/\r
  33 \r
  34 // Some security stuff...\r
  35 if (ereg(basename(__FILE__), $_SERVER['PHP_SELF']))\r
  36 {\r
  37         $INC = substr(dirname(__FILE__), 0, strpos(dirname(__FILE__), "/inc") + 4)."/security.php";\r
  38         require($INC);\r
  39 }\r
  40 //\r
  41 global $EXT_CSS_FILES;\r
  42 $EXT_CSS_FILES = array();\r
  43 $ADD = "";\r
  44 \r
  45 // Skip loading extensions\r
  46 if ((!mxchange_installed) || (mxchange_installing)) return;\r
  47 \r
  48 // Load default sql_patches extension if present\r
  49 if (file_exists(PATH."inc/extensions/ext-sql_patches.php") && is_readable(PATH."inc/extensions/ext-sql_patches.php"))\r
  50 {\r
  51         // Load it...\r
  52         $EXT_LOAD_MODE = "";\r
  53         require_once(PATH."inc/extensions/ext-sql_patches.php");\r
  54         $KEEP_ACTIVE = array('sql_patches' => "Y"); // KEEP THIS ALWAYS ACTIVE!\r
  55 }\r
  56  else\r
  57 {\r
  58         // Initialize array for "always keep active extensions"\r
  59         $KEEP_ACTIVE = array();\r
  60 }\r
  61 \r
  62 //\r
  63 // Load extensions\r
  64 //\r
  65 if (EXT_IS_ACTIVE("cache"))\r
  66 {\r
  67         // Load cache extension alone\r
  68         include_once(PATH."inc/libs/cache_functions.php");\r
  69         $CACHE_FILE = "";\r
  70         include_once(PATH."inc/extensions/ext-cache.php");\r
  71         switch($CACHE->cache_file("extensions", true))\r
  72         {\r
  73                 case true : $CACHE_FILE = "load"; break;\r
  74                 case false: $CACHE_FILE = "init"; break;\r
  75         }\r
  76 \r
  77         // Do not recreate cache file when it's switched off!\r
  78         if (($CACHE_FILE == "init") && ($CONFIG['cache_exts'] == "N")) $CACHE_FILE = "skip";\r
  79 \r
  80         // Load language\r
  81         if ($CACHE_FILE == "load") include(PATH."inc/language/cache_".GET_LANGUAGE().".php");\r
  82 }\r
  83  else\r
  84 {\r
  85         $CACHE_FILE = "no";\r
  86 }\r
  87 \r
  88 if ($CACHE_FILE == "load")\r
  89 {\r
  90         // Load more cache files (like admins)\r
  91         require_once(PATH."inc/load_cache.php");\r
  92 \r
  93         // Re-initialize handler\r
  94         $CACHE->cache_file("extensions", true);\r
  95 \r
  96         // Load extension data from cache file\r
  97         $EXT_DUMMY = $CACHE->cache_load();\r
  98         foreach ($EXT_DUMMY['ext_name'] as $k=>$name)\r
  99         {\r
 100                 // Load functions file\r
 101                 if ($EXT_DUMMY['ext_funcs'][$k] == "Y") require_once(PATH."inc/libs/".$name."_functions.php");\r
 102 \r
 103                 // Load Language file\r
 104                 if ($EXT_DUMMY['ext_lang'][$k] == "Y")\r
 105                 {\r
 106                         $INC = sprintf(PATH."inc/language/%s_%s.php", $name, GET_LANGUAGE());\r
 107                         if (file_exists($INC)) require_once($INC);\r
 108                 }\r
 109 \r
 110                 // Load CSS file\r
 111                 if ($EXT_DUMMY['ext_css'][$k] == "Y") $EXT_CSS_FILES[] = "".$name.".css";\r
 112 \r
 113                 // Load extension file itself\r
 114                 if (($EXT_DUMMY['ext_active'][$k] == "Y") || ($EXT_DUMMY['ext_keep'][$k] == "Y") || (IS_ADMIN()))\r
 115                 {\r
 116                         require_once(PATH."inc/extensions/ext-".$name.".php");\r
 117                 }\r
 118 \r
 119                 // Transfer version number and active status\r
 120                 $EXT_DUMMY['ext_version'][$name] = $EXT_DUMMY['ext_version'][$k];\r
 121                 unset($EXT_DUMMY['ext_version'][$k]);\r
 122                 $EXT_DUMMY['ext_active'][$name] = $EXT_DUMMY['ext_active'][$k];\r
 123                 unset($EXT_DUMMY['ext_active'][$k]);\r
 124                 $EXT_DUMMY['ext_menu'][$name] = $EXT_DUMMY['ext_menu'][$k];\r
 125                 unset($EXT_DUMMY['ext_menu'][$k]);\r
 126                 $KEEP_ACTIVE['$name'] = $EXT_DUMMY['ext_keep'][$k];\r
 127                 unset($EXT_DUMMY['ext_keep'][$k]);\r
 128                 $k2 = $EXT_DUMMY['ext_id'][$k];\r
 129                 $EXT_DUMMY['ext_id'][$k2] = $name;\r
 130                 if ($k2 != $k) unset($EXT_DUMMY['ext_id'][$k]);\r
 131 \r
 132                 // Remove unneccessary data from memory\r
 133                 unset($EXT_DUMMY['ext_lang'][$k]);\r
 134                 unset($EXT_DUMMY['ext_css'][$k]);\r
 135                 unset($EXT_DUMMY['ext_funcs'][$k]);\r
 136         }\r
 137 \r
 138         // Close cache file\r
 139         $CACHE->cache_close();\r
 140 \r
 141         // Loading cache is done so let's free some memory!\r
 142         unset($EXT_DUMMY['ext_lang']);\r
 143         unset($EXT_DUMMY['ext_keep']);\r
 144         unset($EXT_DUMMY['ext_css']);\r
 145         unset($EXT_DUMMY['ext_funcs']);\r
 146         $EXTENSIONS = $EXT_DUMMY;\r
 147         unset($EXT_DUMMY);\r
 148 \r
 149         // No database load needed\r
 150         $res_ext_crt = false;\r
 151 }\r
 152  else\r
 153 {\r
 154         // If current user is not admin load only activated extensions\r
 155         // The admin shall use every available extension for testing purposes\r
 156         if (!IS_ADMIN()) $ADD = " WHERE ext_active='Y'";\r
 157 \r
 158         if (GET_EXT_VERSION("sql_patches") >= "0.0.6")\r
 159         {\r
 160                 // Query with CSS file from DB\r
 161                 $res_ext_crt = SQL_QUERY("SELECT id, ext_name, ext_lang_file, ext_has_css, ext_active, ext_version\r
 162 FROM "._MYSQL_PREFIX."_extensions".$ADD."\r
 163 ORDER BY ext_name", __FILE__, __LINE__);\r
 164         }\r
 165          else\r
 166         {\r
 167                 // Old obsulete query string\r
 168                 $res_ext_crt = SQL_QUERY("SELECT id, ext_name, ext_lang_file, ext_name, ext_active, ext_version\r
 169 FROM "._MYSQL_PREFIX."_extensions".$ADD."\r
 170 ORDER BY ext_name", __FILE__, __LINE__);\r
 171         }\r
 172 }\r
 173 \r
 174 // Array for removed but not uninstalled extensions\r
 175 $DEL = array();\r
 176 \r
 177 // At least one found?\r
 178 if ((SQL_NUMROWS($res_ext_crt) > 0) && (($CACHE_FILE == "init") || ($CACHE_FILE == "no")) && ($CSS != "1") && ($CSS != "-1"))\r
 179 {\r
 180         // Load theme management\r
 181         require_once(PATH."inc/theme-manager.php");\r
 182 \r
 183         // If we need to init the cache init it now\r
 184         if ($CACHE_FILE == "init") $CACHE->cache_init("EXTENSIONS");\r
 185 \r
 186         // Extensions are registered so we load them\r
 187         while (list($EXT_ID, $name, $lang, $css, $active, $version) = SQL_FETCHROW($res_ext_crt))\r
 188         {\r
 189                 // Get menu entry\r
 190                 $result_menu = SQL_QUERY_ESC("SELECT has_menu FROM "._MYSQL_PREFIX."_mod_reg WHERE module='%s' LIMIT 1",\r
 191                  array($name), __FILE__, __LINE__);\r
 192                 list($menu) = SQL_FETCHROW($result_menu);\r
 193                 //* DEBUG: */ echo "*".$name."/".$menu."*<br>";\r
 194 \r
 195                 // An empty menu entry will be interpreted as N (no menu) to avoid problems\r
 196                 if (empty($menu)) $menu = "N";\r
 197 \r
 198                 // Load extensions\r
 199                 $file1 = sprintf(PATH."inc/extensions/ext-%s.php", $name);\r
 200                 $file2 = $file1; $EXT_CSS = "N"; $EXT_ALWAYS_ACTIVE = "N";\r
 201 \r
 202                 // Special functions file\r
 203                 $file3 = sprintf(PATH."inc/libs/%s_functions.php", $name);\r
 204 \r
 205                 // Does the extension file exists?\r
 206                 if (file_exists($file1) && is_readable($file1))\r
 207                 {\r
 208                         // If there's no language file specified we don't need to load one... ;-)\r
 209                         if (!empty($lang)) {\r
 210                                 // Create language file\r
 211                                 $file2 = sprintf(PATH."inc/language/%s_%s.php", $lang, GET_LANGUAGE());\r
 212                         }\r
 213 \r
 214                         if (file_exists($file3) && is_readable($file3))\r
 215                         {\r
 216                                 // Special functions file\r
 217                                 $funcs = "Y";\r
 218                                 require_once($file3);\r
 219                         }\r
 220                          else\r
 221                         {\r
 222                                 // Don't load functions file\r
 223                                 $funcs = "N";\r
 224                         }\r
 225 \r
 226                         // Do we need a language file?\r
 227                         if (($file1 != $file2) && (file_exists($file2)) && (is_readable($file2)))\r
 228                         {\r
 229                                 // Load language file\r
 230                                 $lang = "Y";\r
 231                                 include($file2);\r
 232                         }\r
 233                          else\r
 234                         {\r
 235                                 // Don't load language file\r
 236                                 $lang = "N";\r
 237                         }\r
 238 \r
 239                         // Load extension\r
 240                         if ($name != "sql_patches")\r
 241                         {\r
 242                                 // Load extension's file\r
 243                                 include_once($file1);\r
 244                         }\r
 245                          else\r
 246                         {\r
 247                                 // KEEP sql_patches ALWAYS ACTIVE!\r
 248                                 $EXT_ALWAYS_ACTIVE = "Y";\r
 249                         }\r
 250 \r
 251                         if ($css == "Y")\r
 252                         {\r
 253                                 $CSS_FILE = PATH."theme/".GET_CURR_THEME()."/css/".$name.".css";\r
 254                                 if (file_exists($CSS_FILE))\r
 255                                 {\r
 256                                         // CSS file for extension was found (use only relative path for now!)\r
 257                                         $EXT_CSS_FILES[] = $name.".css";\r
 258                                 }\r
 259                                  else\r
 260                                 {\r
 261                                         // Don't load CSS file\r
 262                                         $css = "N";\r
 263                                 }\r
 264                         }\r
 265 \r
 266                         // Add cache row\r
 267                         if ($CACHE_FILE == "init")\r
 268                         {\r
 269                                 $CACHE->add_row(array(\r
 270                                         'ext_id'      => $EXT_ID,\r
 271                                         'ext_name'    => $name,\r
 272                                         'ext_lang'    => $lang,\r
 273                                         'ext_css'     => $css,\r
 274                                         'ext_menu'    => $menu,\r
 275                                         'ext_funcs'   => $funcs,\r
 276                                         'ext_active'  => $active,\r
 277                                         'ext_version' => $version,\r
 278                                         'ext_keep'    => $EXT_ALWAYS_ACTIVE,\r
 279                                 ));\r
 280                         }\r
 281                          elseif ($CACHE_FILE == "no")\r
 282                         {\r
 283                                 // Remember this value for later usage\r
 284                                 $KEEP_ACTIVE[$name] = $EXT_ALWAYS_ACTIVE;\r
 285                         }\r
 286                 }\r
 287                  elseif (!file_exists($file1))\r
 288                 {\r
 289                         // Deleted extension file so we mark it for removal from DB\r
 290                         $DEL[] = $name;\r
 291                 }\r
 292         }\r
 293 \r
 294         if ($CACHE_FILE == "init")\r
 295         {\r
 296                 // Close cache file\r
 297                 $CACHE->cache_close();\r
 298 \r
 299                 // Load more cache files (like admins)\r
 300                 require_once(PATH."inc/load_cache.php");\r
 301         }\r
 302 }\r
 303 \r
 304 // Free memory\r
 305 SQL_FREERESULT($res_ext_crt);\r
 306 \r
 307 // Compile configuration system\r
 308 /**\r
 309  * Commented out...\r
 310  *\r
 311  *foreach ($CONFIG as $k=>$v)\r
 312  *{\r
 313  *      $CONFIG[$k] = COMPILE_CODE($v);\r
 314  *}\r
 315  */\r
 316 \r
 317 // Load include files\r
 318 if (!empty($INC_POOL[0]))\r
 319 {\r
 320         foreach ($INC_POOL as $inc)\r
 321         {\r
 322                 require_once($inc);\r
 323         }\r
 324 }\r
 325 \r
 326 // Uninstall extensions that are no longer in our system\r
 327 if (!empty($DEL[0]))\r
 328 {\r
 329         // Remove extensions from two tables: extension registry and tasks table\r
 330         foreach ($DEL as $name)\r
 331         {\r
 332                 // First remove entry from extensions table\r
 333                 $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",\r
 334                  array($name), __FILE__, __LINE__);\r
 335 \r
 336                 // Remove (maybe?) found tasks (main task and possible updates\r
 337                 $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_task_system WHERE subject LIKE '[%s:] %' AND (task_type='EXTENSION' OR task_type='EXTENSION_UPDATE')",\r
 338                  array($name), __FILE__, __LINE__);\r
 339         }\r
 340 \r
 341         // I think it's not neccessary to run the optimization function here\r
 342         // because we didn't delete so much data from database. Can you aggree?\r
 343 }\r
 344 //\r
 345 ?>\r