inc/filters.php

   1 <?php
   2 /************************************************************************
   3  * MXChange v0.2.1                                    Start: 12/16/2008 *
   4  * ===============                              Last change: 12/16/2008 *
   5  *                                                                      *
   6  * -------------------------------------------------------------------- *
   7  * File              : filters.php                                      *
   8  * -------------------------------------------------------------------- *
   9  * Short description : Functions for filter system                      *
  10  * -------------------------------------------------------------------- *
  11  * Kurzbeschreibung  : Funktionen fuer Filter-System                    *
  12  * -------------------------------------------------------------------- *
  13  * $Revision::                                                        $ *
  14  * $Date::                                                            $ *
  15  * $Tag:: 0.2.1-FINAL                                                 $ *
  16  * $Author::                                                          $ *
  17  * Needs to be in all Files and every File needs "svn propset           *
  18  * svn:keywords Date Revision" (autoprobset!) at least!!!!!!            *
  19  * -------------------------------------------------------------------- *
  20  * Copyright (c) 2003 - 2008 by Roland Haeder                           *
  21  * For more information visit: http://www.mxchange.org                  *
  22  *                                                                      *
  23  * This program is free software; you can redistribute it and/or modify *
  24  * it under the terms of the GNU General Public License as published by *
  25  * the Free Software Foundation; either version 2 of the License, or    *
  26  * (at your option) any later version.                                  *
  27  *                                                                      *
  28  * This program is distributed in the hope that it will be useful,      *
  29  * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
  30  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
  31  * GNU General Public License for more details.                         *
  32  *                                                                      *
  33  * You should have received a copy of the GNU General Public License    *
  34  * along with this program; if not, write to the Free Software          *
  35  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,               *
  36  * MA  02110-1301  USA                                                  *
  37  ************************************************************************/
  38
  39 // Some security stuff...
  40 if (!defined('__SECURITY')) {
  41         $INC = substr(dirname(__FILE__), 0, strpos(dirname(__FILE__), '/inc') + 4) . '/security.php';
  42         require($INC);
  43 }
  44
  45 // Init "generic filter system"
  46 function initFilterSystem () {
  47         // Is the filter already initialized?
  48         if ((isset($GLOBALS['filters']['chains'])) && (is_array($GLOBALS['filters']['chains']))) {
  49                 // Then abort here
  50                 debug_report_bug(getMessage('FILTER_FAILED_ALREADY_INIT'));
  51         } // END - if
  52
  53         // Init the filter system (just some ideas)
  54         $GLOBALS['filters']['chains'] = array(
  55                 'preinit'   => array(), // Filters for pre-init phase
  56                 'postinit'  => array(), // Filters for post-init phase
  57                 'shutdown'  => array()  // Filters for shutdown phase
  58         );
  59
  60         // Init loaded filters and counter
  61         $GLOBALS['filters']['loaded'] =  array();
  62         $GLOBALS['filters']['counter'] = array();
  63
  64         // Load all saved filers if sql_patches is updated
  65         if (isset($GLOBALS['cache_array']['filter'])) {
  66                 // Found in cache so rewrite the array
  67                 $filterArray = array();
  68                 foreach ($GLOBALS['cache_array']['filter']['filter_name'] as $idx => $filterName) {
  69                         // Get filter function
  70                         $filterFunction = $GLOBALS['cache_array']['filter']['filter_function'][$idx];
  71
  72                         // Add the element with mapped index
  73                         $filterArray['counter'][$filterName][$filterFunction] = $GLOBALS['cache_array']['filter']['filter_counter'][$idx];
  74                         $filterArray['loaded'][$filterName][$filterFunction]  = true;
  75                         $filterArray['chains'][$filterName][$filterFunction]  = $GLOBALS['cache_array']['filter']['filter_active'][$idx];
  76                 } // END - foreach
  77
  78                 // Set the array
  79                 //die('<pre>'.print_r($filterArray, true).'</pre>');
  80                 $GLOBALS['filters'] = $filterArray;
  81
  82                 // Remove the cache
  83                 unset($GLOBALS['cache_array']['filter']);
  84         } elseif (GET_EXT_VERSION('sql_patches') >= '0.5.9') {
  85                 // Init add
  86                 $add = '';
  87                 if (GET_EXT_VERSION('sql_patches') >= '0.6.0') $add = ", `filter_counter`";
  88
  89                 // Load all active filers
  90                 $result = SQL_QUERY("SELECT `filter_name`,`filter_function`,`filter_active`".$add."
  91 FROM `{!_MYSQL_PREFIX!}_filters`
  92 ORDER BY `filter_id` ASC", __FUNCTION__, __LINE__);
  93
  94                 // Are there entries?
  95                 if (SQL_NUMROWS($result) > 0) {
  96                         // Load all filters
  97                         while ($filterArray = SQL_FETCHARRAY($result)) {
  98                                 // Get filter name and function
  99                                 $filterName     = $filterArray['filter_name'];
 100                                 $filterFunction = $filterArray['filter_function'];
 101
 102                                 // Set counter to default
 103                                 $GLOBALS['filters']['counter'][$filterName][$filterFunction] = 0;
 104
 105                                 // Mark this filter as loaded (from database)
 106                                 $GLOBALS['filters']['loaded'][$filterName][$filterFunction] = true;
 107
 108                                 // Set this filter
 109                                 $GLOBALS['filters']['chains'][$filterName][$filterFunction] = $filterArray['filter_active'];
 110
 111                                 // Is the array element for counter there?
 112                                 if (isset($filterArray['filter_counter'])) {
 113                                         // Then use this value!
 114                                         $GLOBALS['filters']['counter'][$filterName][$filterFunction] = $filterArray['filter_counter'];
 115                                 } // END - if
 116                         } // END - while
 117                 } // END - if
 118
 119                 // Free result
 120                 SQL_FREERESULT($result);
 121         }
 122
 123         // Init filters
 124         registerFilter('init', 'UPDATE_LOGIN_DATA');
 125         registerFilter('init', 'INIT_RANDOMIZER');
 126
 127         // Login failures handler
 128         registerFilter('post_youhere_line', 'CALL_HANDLER_LOGIN_FAILTURES');
 129
 130         // Filters for pre-extension-registration
 131         registerFilter('pre_extension_installed', 'RUN_SQLS');
 132
 133         // Filters for post-extension-registration
 134         registerFilter('post_extension_installed', 'AUTO_ACTIVATE_EXTENSION');
 135         registerFilter('post_extension_installed', 'SOLVE_TASK');
 136         registerFilter('post_extension_installed', 'LOAD_INCLUDES');
 137         registerFilter('post_extension_installed', 'REMOVE_UPDATES');
 138
 139         // Solving tasks
 140         registerFilter('solve_task', 'SOLVE_TASK');
 141
 142         // Loading includes in general
 143         registerFilter('load_includes', 'LOAD_INCLUDES');
 144
 145         // Run SQLs
 146         registerFilter('run_sqls', 'RUN_SQLS');
 147
 148         // Admin ACL check
 149         registerFilter('check_admin_acl', 'CHECK_ADMIN_ACL');
 150
 151         // Register shutdown filters
 152         registerFilter('shutdown', 'FLUSH_FILTERS');
 153 }
 154
 155 // "Registers" a new filter function
 156 function registerFilter ($filterName, $filterFunction, $silentAbort = true, $force = false, $dry_run = false) {
 157         // Extend the filter function name
 158         $filterFunction = sprintf("FILTER_%s", strtoupper($filterFunction));
 159
 160         // Is that filter already there?
 161         if ((isset($GLOBALS['filters']['chains'][$filterName][$filterFunction])) && (!$force)) {
 162                 // Then abort here
 163                 if ($silentAbort === false) {
 164                         addFatalMessage(__FUNCTION__, __LINE__, getMessage('FILTER_FAILED_ALREADY_ADDED'), array($filterFunction, $filterName));
 165                 } // END - if
 166
 167                 // Abort here
 168                 return false;
 169         } // END - if
 170
 171         // Is the function there?
 172         if (!function_exists($filterFunction)) {
 173                 // Then abort here
 174                 addFatalMessage(__FUNCTION__, __LINE__, getMessage('FILTER_FAILED_NOT_FOUND'), array($filterFunction, $filterName));
 175                 return false;
 176         } // END - if
 177
 178         // Shall we add it?
 179         if (!$dry_run) {
 180                 // Simply add it to the array
 181                 $GLOBALS['filters']['chains'][$filterName][$filterFunction] = 'Y';
 182                 $GLOBALS['filters']['counter'][$filterName][$filterFunction] = 0;
 183         } // END - if
 184 }
 185
 186 // "Unregisters" a filter from the given chain
 187 function unregisterFilter ($filterName, $filterFunction, $force = false, $dry_run = false) {
 188         // Extend the filter function name only if not loaded from database
 189         if (!isset($GLOBALS['filters']['loaded'][$filterName][$filterFunction])) {
 190                 $filterFunction = sprintf("FILTER_%s", strtoupper($filterFunction));
 191         } // END - if
 192
 193         // Is that filter there?
 194         if ((!isset($GLOBALS['filters']['chains'][$filterName][$filterFunction])) && (!$force)) {
 195                 // Not found, so abort here
 196                 addFatalMessage(__FUNCTION__, __LINE__, getMessage('FILTER_FAILED_NOT_REMOVED'), array($filterFunction, $filterName));
 197                 return false;
 198         } // END - if
 199
 200         // Shall we remove? (default, not while just showing an extension removal)
 201         if ($dry_run === false) {
 202                 // Mark for filter removal
 203                 $GLOBALS['filters']['chains'][$filterName][$filterFunction] = 'R';
 204         } // END  - if
 205 }
 206
 207 // "Runs" the given filters, data is optional and can be any type of data
 208 function runFilterChain ($filterName, $data = null, $silentAbort = true) {
 209         // Is that filter chain there?
 210         if (!isset($GLOBALS['filters']['chains'][$filterName])) {
 211                 // We should find all these non-existing filter chains
 212                 DEBUG_LOG(__FUNCTION__, __LINE__, 'Filter chain ' . $filterName . ' not found!');
 213
 214                 // Abort here
 215                 return false;
 216         } // END - if
 217
 218         // Default return value
 219         $returnValue = $data;
 220
 221         // Then run all filters
 222         foreach ($GLOBALS['filters']['chains'][$filterName] as $filterFunction => $active) {
 223                 // Debug message
 224                 //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, "Running: name={$filterName},func={$filterFunction},active={$active}");
 225
 226                 // Is the filter active?
 227                 if (($active == 'Y') || ((in_array($filterName, array('extension_remove', 'post_extension_run_sql'))) && ($active == 'R'))) {
 228                         // Is this filter there?
 229                         if (!function_exists($filterFunction)) {
 230                                 // Unregister it
 231                                 unregisterFilter($filterName, $filterFunction);
 232
 233                                 // Skip this entry
 234                                 continue;
 235                         } // END - if
 236
 237                         // Call the filter chain
 238                         $returnValue = call_user_func_array($filterFunction, array($returnValue));
 239
 240                         // Update usage counter
 241                         countFilterUsage($filterName, $filterFunction);
 242                 } elseif (isDebugModeEnabled()) {
 243                         // Debug message
 244                         DEBUG_LOG(__FUNCTION__, __LINE__, "Skipped: name={$filterName},func={$filterFunction},active={$active}");
 245                 }
 246         } // END - foreach
 247
 248         // Return the filtered content
 249         return $returnValue;
 250 }
 251
 252 // Count the filter usage
 253 function countFilterUsage ($filterName, $filterFunction) {
 254         // Is it there?
 255         if (isset($GLOBALS['filters']['counter'][$filterName][$filterFunction])) {
 256                 // Yes, then increase
 257                 $GLOBALS['filters']['counter'][$filterName][$filterFunction]++;
 258         } else {
 259                 // No, then create
 260                 $GLOBALS['filters']['counter'][$filterName][$filterFunction] = 1;
 261         }
 262 }
 263
 264 // -----------------------------------------------------------------------------
 265 // Generic filter functions we always need
 266 // -----------------------------------------------------------------------------
 267
 268 // Filter for flushing all new filters to the database
 269 function FILTER_FLUSH_FILTERS () {
 270         // Clear all previous SQL queries
 271         INIT_SQLS();
 272
 273         // Are we installing?
 274         if ((isInstalling()) || (!isInstalled())) {
 275                 // Then silently skip this filter
 276                 return true;
 277         } // END - if
 278
 279         // Is a database link here and not in installation mode?
 280         if ((!SQL_IS_LINK_UP()) && (!isInstalling())) {
 281                 // Abort here
 282                 addFatalMessage(__FUNCTION__, __LINE__, getMessage('FILTER_FLUSH_FAILED_NO_DATABASE'));
 283                 return false;
 284         } // END - if
 285
 286         // Is the extension sql_patches updated?
 287         if (EXT_VERSION_IS_OLDER('sql_patches', '0.5.9')) {
 288                 // Abort silently here
 289                 return false;
 290         } // END - if
 291
 292         // Nothing is added/remove by default
 293         $inserted = 0;
 294         $removed = 0;
 295
 296         // Prepare SQL queries
 297         $insertSQL = "INSERT INTO `{!_MYSQL_PREFIX!}_filters` (`filter_name`,`filter_function`,`filter_active`) VALUES";
 298         $removeSQL = "DELETE LOW_PRIORITY FROM `{!_MYSQL_PREFIX!}_filters` WHERE";
 299
 300         // Write all filters to database
 301         foreach ($GLOBALS['filters']['chains'] as $filterName => $filterArray) {
 302                 // Walk through all filters
 303                 foreach ($filterArray as $filterFunction => $active) {
 304                         // Is this filter loaded?
 305                         if (!isset($GLOBALS['filters']['loaded'][$filterName][$filterFunction])) {
 306                                 // Add this filter (all filters are active by default)
 307                                 $insertSQL .= sprintf("('%s','%s','Y'),", $filterName, $filterFunction);
 308                                 $inserted++;
 309                         } elseif ($active == "R") {
 310                                 // Remove this filter
 311                                 $removeSQL .= sprintf(" (`filter_name`='%s' AND `filter_function`='%s') OR", $filterName, $filterFunction);
 312                                 $removed++;
 313                         }
 314                 } // END - foreach
 315         } // END - foreach
 316
 317         // Something has been added?
 318         if ($inserted > 0) {
 319                 // Finish SQL command
 320                 $insertSQL = substr($insertSQL, 0, -1);
 321
 322                 // And run it
 323                 ADD_SQL($insertSQL);
 324         } // END - if
 325
 326         // Something has been removed?
 327         if ($removed > 0) {
 328                 // Finish SQL command
 329                 $removeSQL = substr($removeSQL, 0, -2) . "LIMIT ".$removed;
 330
 331                 // And run it
 332                 ADD_SQL($removeSQL);
 333         } // END - if
 334
 335         // Shall we update usage counters (ONLY FOR DEBUGGING!)
 336         if (getConfig('update_filter_usage') == 'Y') {
 337                 // Update all counters
 338                 foreach ($GLOBALS['filters']['counter'] as $filterName => $filterArray) {
 339                         // Walk through all filters
 340                         foreach ($filterArray as $filterFunction => $cnt) {
 341                                 // Construct and add the query
 342                                 ADD_SQL(sprintf("UPDATE `{!_MYSQL_PREFIX!}_filters` SET `filter_counter`=%s WHERE `filter_name`='%s' AND `filter_function`='%s' LIMIT 1",
 343                                         bigintval($cnt),
 344                                         $filterName,
 345                                         $filterFunction
 346                                 ));
 347                         } // END - foreach
 348                 } // END - foreach
 349         } // END - if
 350
 351         // Run the run_sqls filter in non-dry mode
 352         runFilterChain('run_sqls');
 353 }
 354
 355 // Filter for calling the handler for login failures
 356 function FILTER_CALL_HANDLER_LOGIN_FAILTURES ($data) {
 357         // Init content
 358         $content = $data;
 359
 360         // Handle failed logins here if not in guest
 361         //* DEBUG: */ print __FUNCTION__."(<font color=\"#0000aa\">".__LINE__."</font>):type={$data['type']},action={getAction()},what={getWhat()},lvl={$data['access_level']}<br />\n";
 362         if ((($data['type'] == 'what') || ($data['type'] == 'action') && ((!isWhatSet()) || (getWhat() == 'overview') || (getWhat() == getConfig('index_home')))) && ($data['access_level'] != 'guest') && ((GET_EXT_VERSION('sql_patches') >= '0.4.7') || (GET_EXT_VERSION('admins') >= '0.7.0'))) {
 363                 // Handle failure
 364                 $content['content'] .= HANDLE_LOGIN_FAILTURES($data['access_level']);
 365         } // END - if
 366
 367         // Return the content
 368         return $content;
 369 }
 370
 371 // Filter for redirecting to logout if sql_patches has been installed
 372 function FILTER_REDIRECT_TO_LOGOUT_SQL_PATCHES () {
 373         // Remove this filter
 374         unregisterFilter('shutdown', __FUNCTION__);
 375
 376         // Is the element set?
 377         if (isset($GLOBALS['ext_load_mode'])) {
 378                 // Redirect here
 379                 redirectToUrl('modules.php?module=admin&amp;logout=1&amp;' . $GLOBALS['ext_load_mode'] . '=sql_patches');
 380         } // END - if
 381
 382         // This should not happen!
 383         DEBUG_LOG(__FUNCTION__, __LINE__, 'Cannot auto-logout because no extension load-mode has been set.');
 384 }
 385
 386 // Filter for auto-activation of a extension
 387 function FILTER_AUTO_ACTIVATE_EXTENSION ($data) {
 388         // Is this extension always activated?
 389         if (EXT_GET_ALWAYS_ACTIVE() == 'Y') {
 390                 // Then activate the extension
 391                 //* DEBUG: */ echo __FUNCTION__."(<font color=\"#0000aa\">".__LINE__."</font>): ext_name={$data['ext_name']}<br />\n";
 392                 ACTIVATE_EXTENSION($data['ext_name']);
 393         } // END - if
 394
 395         // Return the data
 396         return $data;
 397 }
 398
 399 // Filter for solving task given task
 400 function FILTER_SOLVE_TASK ($data) {
 401         // Don't solve anything if no admin!
 402         if (!IS_ADMIN()) return $data;
 403
 404         // Is this a direct task id or array element task_id is found?
 405         if (is_int($data)) {
 406                 // Then solve it...
 407                 ADMIN_SOLVE_TASK($data);
 408         } elseif ((is_array($data)) && (isset($data['task_id']))) {
 409                 // Solve it...
 410                 ADMIN_SOLVE_TASK($data['task_id']);
 411         }
 412
 413         // Return the data
 414         return $data;
 415 }
 416
 417 // Filter to load include files
 418 function FILTER_LOAD_INCLUDES () {
 419         // Default is $data as inclusion list
 420         $data = GET_INC_POOL();
 421
 422         // Is it an array?
 423         if ((!isset($data)) || (!is_array($data))) {
 424                 // Then abort here
 425                 debug_report_bug(sprintf("INC_POOL is no array! Type: %s", gettype($data)));
 426         } elseif (isset($data['inc_pool'])) {
 427                 // Use this as new inclusion pool!
 428                 SET_INC_POOL($data['inc_pool']);
 429         }
 430
 431         // Check for added include files
 432         if (COUNT_INC_POOL() > 0) {
 433                 // Loads every include file
 434                 foreach (GET_INC_POOL() as $FQFN) {
 435                         loadIncludeOnce($FQFN);
 436                 } // END - foreach
 437
 438                 // Reset array
 439                 INIT_INC_POOL();
 440         } // END - if
 441
 442         // Continue with processing
 443         return $data;
 444 }
 445
 446 // Filter for running SQL commands
 447 function FILTER_RUN_SQLS ($data) {
 448         // Debug message
 449         //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, " - Entered!");
 450
 451         // Is the array there?
 452         if ((IS_SQLS_VALID()) && ((!isset($data['dry_run'])) || ($data['dry_run'] == false))) {
 453                 // Run SQL commands
 454                 //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, " - Found ".COUNT_SQLS()." queries to run.");
 455                 foreach (GET_SQLS() as $sql) {
 456                         // Trim spaces away
 457                         $sql = trim($sql);
 458
 459                         // Is there still a query left?
 460                         if (!empty($sql)) {
 461                                 // Do we have an "ALTER TABLE" command?
 462                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
 463                                         // Analyse the alteration command
 464                                         //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, "Alterting table: {$sql}");
 465                                         SQL_ALTER_TABLE($sql, __FUNCTION__, __LINE__);
 466                                 } else {
 467                                         // Run regular SQL command
 468                                         //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, "Running regular query: {$sql}");
 469                                         SQL_QUERY($sql, __FUNCTION__, __LINE__, false);
 470                                 }
 471                         } // END - if
 472                 } // END - foreach
 473         } // END - if
 474
 475         // Debug message
 476         //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, " - Left!");
 477 }
 478
 479 // Filter for updating/validating login data
 480 function FILTER_UPDATE_LOGIN_DATA () {
 481         // Add missing array
 482         if ((!isset($GLOBALS['last'])) || (!is_array($GLOBALS['last']))) $GLOBALS['last'] = array();
 483
 484         // Recheck if logged in
 485         if (!IS_MEMBER()) return false;
 486
 487         // Secure user ID
 488         setUserId(getSession('userid'));
 489
 490         // Load last module and last online time
 491         $result = SQL_QUERY_ESC("SELECT last_module, last_online FROM `{!_MYSQL_PREFIX!}_user_data` WHERE userid=%s LIMIT 1",
 492                 array(getUserId()), __FUNCTION__, __LINE__);
 493
 494         // Entry found?
 495         if (SQL_NUMROWS($result) == 1) {
 496                 // Load last module and online time
 497                 list($mod, $onl) = SQL_FETCHROW($result);
 498
 499                 // Maybe first login time?
 500                 if (empty($mod)) $mod = 'login';
 501
 502                 // This will be displayed on welcome page! :-)
 503                 if (empty($GLOBALS['last']['module'])) {
 504                         $GLOBALS['last']['module'] = $mod; $GLOBALS['last']['online'] = $onl;
 505                 } // END - if
 506
 507                 // 'what' not set?
 508                 if (!isWhatSet()) {
 509                         // Fix it to default
 510                         setWhat('welcome');
 511                         if (getConfig('index_home') != '') setWhatFromConfig('index_home');
 512                 } // END - if
 513
 514                 // Update last module / online time
 515                 SQL_QUERY_ESC("UPDATE `{!_MYSQL_PREFIX!}_user_data` SET `last_module`='%s', last_online=UNIX_TIMESTAMP(), REMOTE_ADDR='%s' WHERE userid=%s LIMIT 1",
 516                         array(getWhat(), detectRemoteAddr(), getUserId()), __FUNCTION__, __LINE__);
 517         }  else {
 518                 // Destroy session, we cannot update!
 519                 destroyUserSession();
 520         }
 521
 522         // Free the result
 523         SQL_FREERESULT($result);
 524 }
 525
 526 // Filter for checking admin ACL
 527 function FILTER_CHECK_ADMIN_ACL () {
 528         // Extension not installed so it's always allowed to access everywhere!
 529         $ret = true;
 530
 531         // Ok, Cookie-Update done
 532         if ((GET_EXT_VERSION('admins') >= '0.3.0') && (EXT_IS_ACTIVE('admins'))) {
 533                 // Check if action GET variable was set
 534                 $action = getAction();
 535                 if (isWhatSet()) {
 536                         // Get action value by what-value
 537                         $action = getModeAction('admin', getWhat());
 538                 } // END - if
 539
 540                 // Check for access control line of current menu entry
 541                 $ret = adminsCheckAdminAcl($action, getWhat());
 542         } // END - if
 543
 544         // Return result
 545         return $ret;
 546 }
 547
 548 // Filter for initializing randomizer
 549 function FILTER_INIT_RANDOMIZER () {
 550         // Simply init the randomizer with seed and _ADD value
 551         mt_srand(generateSeed() + getConfig('_ADD'));
 552 }
 553
 554 // Filter for removing updates
 555 function FILTER_REMOVE_UPDATES () {
 556         // Init removal list
 557         EXT_INIT_REMOVAL_LIST();
 558
 559         // Add the current extension to it
 560         EXT_ADD_CURRENT_TO_REMOVAL_LIST();
 561
 562         // Simply remove it
 563         UNSET_EXT_SQLS();
 564
 565         // Do we need to remove update depency?
 566         if (EXT_COUNT_UPDATE_DEPENDS() > 0) {
 567                 // Then find all updates we shall no longer execute
 568                 foreach (EXT_GET_UPDATE_DEPENDS() as $id=>$ext_name) {
 569                         // Shall we remove this update?
 570                         if (in_array($ext_name, EXT_GET_REMOVAL_LIST())) {
 571                                 // Then remove this extension!
 572                                 EXT_REMOVE_UPDATE_DEPENDS($ext_name);
 573                         } // END - if
 574                 } // END - foreach
 575         } // END - if
 576 }
 577
 578 //
 579 ?>