inc/extensions.php

   1 <?php
   2 /************************************************************************
   3  * MXChange v0.2.1                                    Start: 03/25/2004 *
   4  * ===============                              Last change: 09/29/2004 *
   5  *                                                                      *
   6  * -------------------------------------------------------------------- *
   7  * File              : extensions.php                                   *
   8  * -------------------------------------------------------------------- *
   9  * Short description : Extension management                             *
  10  * -------------------------------------------------------------------- *
  11  * Kurzbeschreibung  : Erweiterungen-Management                         *
  12  * -------------------------------------------------------------------- *
  13  *                                                                      *
  14  * -------------------------------------------------------------------- *
  15  * Copyright (c) 2003 - 2008 by Roland Haeder                           *
  16  * For more information visit: http://www.mxchange.org                  *
  17  *                                                                      *
  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.                                  *
  22  *                                                                      *
  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.                         *
  27  *                                                                      *
  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,               *
  31  * MA  02110-1301  USA                                                  *
  32  ************************************************************************/
  33
  34 // Some security stuff...
  35 if (!defined('__SECURITY')) {
  36         $INC = substr(dirname(__FILE__), 0, strpos(dirname(__FILE__), "/inc") + 4) . "/security.php";
  37         require($INC);
  38 }
  39
  40 // Load the extension and maybe found language and function files.
  41 function LOAD_EXTENSION ($ext_name, $EXT_LOAD_MODE = "", $EXT_VER = "", $dry_run = false) {
  42         global $EXT_LOADED, $_CONFIG, $CSS, $cacheMode, $SQLs, $EXT_VER_HISTORY;
  43         global $INC_POOL, $EXT_UPDATE_DEPENDS, $EXT_DEPRECATED, $UPDATE_NOTES;
  44         global $EXT_VERSION, $EXT_ALWAYS_ACTIVE;
  45
  46         // Init array
  47         $INC_POOL = array();
  48
  49         // Is the extension already loaded?
  50         //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, "Loading extension {$ext_name}, mode={$EXT_LOAD_MODE}, ver={$EXT_VER}.");
  51         if ((isset($EXT_LOADED['ext'][$ext_name])) && (empty($EXT_LOAD_MODE))) {
  52                 // Debug message
  53                 DEBUG_LOG(__FUNCTION__, __LINE__, sprintf("Extension %s already loaded.", $ext_name));
  54                 return false;
  55         } // END - if
  56
  57         // Construct FQFN for extension file
  58         $extInclude = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
  59
  60         // Is the extension file NOT there?
  61         if (!FILE_READABLE($extInclude)) {
  62                 // Debug message
  63                 DEBUG_LOG(__FUNCTION__, __LINE__, sprintf("Extension %s not found.", $ext_name));
  64
  65                 // Abort here
  66                 return false;
  67         } // END - if
  68
  69         // Construct FQFN for language file
  70         $langInclude = sprintf("%sinc/language/%s_%s.php", PATH, $ext_name, GET_LANGUAGE());
  71
  72         // Is this include there?
  73         if ((FILE_READABLE($langInclude)) && (!isset($EXT_LOADED['lang'][$ext_name]))) {
  74                 // Then load it
  75                 //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, "--- Language loaded.");
  76                 $EXT_LOADED['lang'][$ext_name] = true;
  77                 require($langInclude);
  78         } // END - if
  79
  80         // Construct FQFN for functions file
  81         $funcsInclude = sprintf("%sinc/libs/%s_functions.php", PATH, $ext_name);
  82
  83         // Is this include there?
  84         if ((FILE_READABLE($funcsInclude)) && (!isset($EXT_LOADED['funcs'][$ext_name]))) {
  85                 // Then load it
  86                 //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, "--- Functions loaded.");
  87                 $EXT_LOADED['funcs'][$ext_name] = true;
  88                 require($funcsInclude);
  89         } // END - if
  90
  91         // Extensions are not deprecated by default
  92         $EXT_DEPRECATED = "N";
  93
  94         // Extensions are not always active by default
  95         $EXT_ALWAYS_ACTIVE = "N";
  96
  97         // By default an extension update does not depend on other extensions
  98         $EXT_UPDATE_DEPENDS = "";
  99
 100         // Extension update notes
 101         $UPDATE_NOTES = "";
 102
 103         // Include the extension file
 104         //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, "Extension loaded.");
 105         require($extInclude);
 106
 107         // Is this extension deprecated?
 108         if ($EXT_DEPRECATED == "Y") {
 109                 // Deactivate the extension
 110                 DEACTIVATE_EXTENSION($ext_name);
 111
 112                 // Abort here
 113                 return false;
 114         } // END - if
 115
 116         // Mark it as loaded in normal mode
 117         if (empty($EXT_LOAD_MODE)) {
 118                 // Mark it now...
 119                 $EXT_LOADED['ext'][$ext_name] = true;
 120         } // END - if
 121
 122         // All fine!
 123         return true;
 124 }
 125
 126 //
 127 function EXTENSION_REGISTER ($ext_name, $task_id, $dry_run=false) {
 128         global $UPDATE_NOTES, $_CONFIG, $INC_POOL, $cacheInstance;
 129         global $EXT_VER_HISTORY, $SQLs, $NOTES, $EXT_ALWAYS_ACTIVE, $EXT_VERSION;
 130
 131         // This shall never do a non-admin user!
 132         if (!IS_ADMIN()) return false;
 133
 134         // Is this extension already installed?
 135         if (EXT_IS_ACTIVE($ext_name)) return false;
 136
 137         // Init variables
 138         $ret = false; $SQLs = array();
 139         $NOTES = "";
 140         $INC_POOL = array();
 141
 142         // By default the language prefix is the extension's name
 143         // @TODO: Do we really need this one anymore? Can't we just take $ext_name and done?
 144         // By default we have no failtures
 145         $EXT_REPORTS_FAILURE = false;
 146
 147         // Does this extension exists?
 148         if (LOAD_EXTENSION($ext_name, "register", "", $dry_run)) {
 149                 // And run possible updates
 150                 $history = $EXT_VER_HISTORY;
 151                 foreach ($history as $ver) {
 152                         //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, "ext_name={$ext_name}, ext_ver={$ver}");
 153                         // Load extension in update mode
 154                         LOAD_EXTENSION($ext_name, "update", $ver, $dry_run);
 155
 156                         // Do we have an update?
 157                         if (((GET_EXT_VERSION("sql_patches") != "") && ($_CONFIG['verbose_sql'] == "Y")) || (!EXT_IS_ACTIVE("sql_patches"))) {
 158                                 if (!empty($UPDATE_NOTES)) {
 159                                         // Update notes found
 160                                         $NOTES .= ("<div class=\"update_notes\"><strong>v".$ver.":</strong><br />".$UPDATE_NOTES."</div>");
 161                                         $UPDATE_NOTES = "";
 162                                 } elseif (($ver == "0.0") || ($ver == "0.0.0")) {
 163                                         // Initial release
 164                                         $NOTES .= ("<div class=\"update_notes\"><strong>v".$ver.":</strong><br />".INITIAL_RELEASE."</div>");
 165                                 } else {
 166                                         // No update notes found!
 167                                         $NOTES .= ("<div class=\"update_notes\"><strong>v".$ver.":</strong><br /><I>".NO_UPDATE_NOTES."</I></div>");
 168                                 }
 169                         } // END - if
 170                 } // END - foreach
 171
 172                 // Does this extension depends on an outstanding update of another update?
 173                 if (!empty($EXT_UPDATE_DEPENDS)) {
 174                         // Backup SQL commands and clear current
 175                         $SQLs2 = $SQLs;
 176                         $SQLs  = array();
 177                         $test  = false;
 178
 179                         // Check for required file
 180                         if (LOAD_EXTENSION($EXT_UPDATE_DEPENDS, "register", "", $dry_run)) {
 181                                 // If versions mismatch update extension first
 182                                 $ext_ver = GET_EXT_VERSION($EXT_UPDATE_DEPENDS);
 183
 184                                 // Extension version set? If empty the extension is not registered
 185                                 if (empty($ext_ver)) {
 186                                         // Extension not registered so far so first load task's ID...
 187                                         $result = SQL_QUERY_ESC("SELECT id FROM "._MYSQL_PREFIX."_task_system WHERE task_type='EXTENSION' AND subject LIKE '[%s:]%%' LIMIT 1",
 188                                                 array($EXT_UPDATE_DEPENDS), __FILE__, __LINE__);
 189
 190                                         // Entry found?
 191                                         if (SQL_NUMROWS($result) == 1) {
 192                                                 // Task found so load task's ID and register extension...
 193                                                 list($task) = SQL_FETCHROW($result);
 194
 195                                                 // Try to register the extension
 196                                                 $test = EXTENSION_REGISTER($EXT_UPDATE_DEPENDS, $task, $dry_run);
 197                                         } // END - if
 198
 199                                         // Free result
 200                                         SQL_FREERESULT($result);
 201                                 } elseif ($ext_ver != $EXT_VERSION) {
 202                                         // Ok, update this extension now
 203                                         EXTENSION_UPDATE(basename($file), $EXT_UPDATE_DEPENDS, $ext_ver, $dry_run);
 204
 205                                         // All okay!
 206                                         $test = true;
 207                                 } else {
 208                                         // Nothing to register / update before...
 209                                         $test = true;
 210                                 }
 211                         } else {
 212                                 // Required file for update does not exists!
 213                                 $test = true;
 214                                 // But this is fine for the first time...
 215                         }
 216
 217                         // Finally restore previous SQLs
 218                         $SQLs = $SQLs2; unset($SQLs2);
 219                 } else {
 220                         // Does not depend on an other extension
 221                         $test = true;
 222                 }
 223
 224                 // Switch back to register mode
 225                 $EXT_LOAD_MODE = "register";
 226
 227                 // Remains true if extension registration reports no failtures
 228                 $test = ($test && !$EXT_REPORTS_FAILURE);
 229
 230                 // Does everthing before wents ok?
 231                 if ($test) {
 232                         // "Dry-run-mode" activated?
 233                         if (!$dry_run) {
 234                                 // Run all SQLs
 235                                 foreach ($SQLs as $sql) {
 236                                         // Trim spaces away which we don't need
 237                                         $sql = trim($sql);
 238
 239                                         // Is there still an SQL query?
 240                                         if (!empty($sql)) {
 241                                                 // Do we have an "ALTER TABLE" command?
 242                                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
 243                                                         // Analyse the alteration command
 244                                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
 245                                                 } else {
 246                                                         // Run regular SQL command
 247                                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 248                                                 }
 249                                         } // END - if
 250                                 } // END - foreach
 251
 252                                 // Remove cache file(s) if extension is active
 253                                 RUN_FILTER('post_extension_installed', $ext_name);
 254
 255                                 // Check for added include files
 256                                 if (count($INC_POOL > 0)) {
 257                                         // Loads every include file
 258                                         foreach ($INC_POOL as $inc) {
 259                                                 require_once($inc);
 260                                         } // END - foreach
 261
 262                                         // Remove array
 263                                         unset($INC_POOL);
 264                                 } // END - if
 265
 266                                 // Register extension
 267                                 $result = SQL_QUERY_ESC("INSERT INTO "._MYSQL_PREFIX."_extensions (ext_name, ext_active, ext_version) VALUES ('%s','%s','%s')",
 268                                         array($ext_name, $EXT_ALWAYS_ACTIVE, $EXT_VERSION), __FILE__, __LINE__);
 269
 270                                 // Update task management
 271                                 ADMIN_SOLVE_TASK($task_id);
 272
 273                                 // @TODO This causes the whole (!) menu cache being purged
 274                                 CACHE_PURGE_ADMIN_MENU();
 275
 276                                 // In normal mode return a true on success
 277                                 $ret = true;
 278
 279                                 // Remove SQLs
 280                                 unset($SQLs);
 281                         } else {
 282                                 // Rewrite SQL command to keep { and } inside
 283                                 foreach ($SQLs as $key => $sql) {
 284                                         $sql = str_replace('{', "&#123;", str_replace('}', "&#125;", $sql));
 285                                         $SQLs[$key] = $sql;
 286                                 } // END - foreach
 287
 288                                 // In  "dry-run" mode return array with all SQL commands
 289                                 $ret = $SQLs;
 290
 291                                 // Remove all SQL commands
 292                                 unset($SQLs);
 293                         }
 294                 } else {
 295                         // No, an error occurs while registering extension :-(
 296                         $ret = false;
 297                 }
 298         } elseif (($task_id > 0) && (!empty($ext_name))) {
 299                 // Remove task from system when id and extension's name is valid
 300                 $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_task_system WHERE id=%s AND status='NEW' LIMIT 1",
 301                  array(bigintval($task_id)), __FILE__, __LINE__);
 302         }
 303
 304         // Is this the sql_patches?
 305         //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, ":{$ext_name}/{$EXT_LOAD_MODE}");
 306         if (($ext_name == "sql_patches") && (($EXT_LOAD_MODE == "register") || ($EXT_LOAD_MODE == "remove")) && (!$dry_run) && ($test)) {
 307                 // Then redirect to logout
 308                 //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, ": LOAD!");
 309                 LOAD_URL("modules.php?module=admin&logout=1&".$EXT_LOAD_MODE."=sql_patches");
 310         } // END - if
 311
 312         // Return status code
 313         return $ret;
 314 }
 315
 316 // Run SQL queries for given extension id
 317 // @TODO Change from ext_id to ext_name (not just even the variable! ;-) )
 318 function EXTENSION_RUN_SQLS ($ext_id, $load_mode) {
 319         global $cacheInstance, $_CONFIG, $SQLs;
 320
 321         // Extensions are never active by default
 322         $EXT_ALWAYS_ACTIVE = "N";
 323
 324         // By default no SQL has been executed
 325         $sqlRan = false;
 326
 327         // This shall never do a non-admin user!
 328         if (!IS_ADMIN()) return false;
 329
 330         // Get extension's name
 331         $ext_name = GET_EXT_NAME($ext_id);
 332         if (empty($ext_name)) return false;
 333
 334         // Load extension in detected mode
 335         //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, ":ext_name[{$ext_id}]={$ext_name}");
 336         LOAD_EXTENSION($ext_name, $load_mode);
 337
 338         //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, ":SQLs::count=".count($SQLs)."");
 339         if ((is_array($SQLs) && (sizeof($SQLs) > 0))) {
 340                 // Run SQL commands...
 341                 foreach ($SQLs as $sql) {
 342                         // Trim spaces away which we don't need
 343                         $sql = trim($sql);
 344
 345                         // Is there still an SQL query?
 346                         if (!empty($sql)) {
 347                                 // Do we have an "ALTER TABLE" command?
 348                                 //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, ":SQL={$SQL}");
 349                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
 350                                         // Analyse the alteration command
 351                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
 352                                 } else {
 353                                         // Run regular SQL command
 354                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 355                                 }
 356
 357                                 // An SQL has been executed
 358                                 $sqlRan = true;
 359                         } // END - if
 360                 } // END - foreach
 361
 362                 // Removal mode?
 363                 if ($load_mode == "remove") {
 364                         // Delete this extension (remember to remove it from your server *before* you click on welcome!
 365                         $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 366                                 array($ext_name), __FILE__, __LINE__);
 367                 } // END - if
 368         } // END - if
 369
 370         // Remove cache file(s) if extension is active
 371         if (((EXT_IS_ACTIVE("cache")) || (GET_EXT_VERSION("cache") != "")) && (((SQL_AFFECTEDROWS() == 1)) || ($sqlRan === true) || ($load_mode == "activate") || ($load_mode == "deactivate"))) {
 372                 // Run filters
 373                 RUN_FILTER('post_extension_run_sql', $ext_name);
 374
 375                 // @TODO This causes the whole (!) menu cache being purged
 376                 CACHE_PURGE_ADMIN_MENU();
 377         } // END - if
 378
 379         // Is this the sql_patches?
 380         //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, ": {$ext_id}/{$ext_name}/{$load_mode}");
 381         if (($ext_name == "sql_patches") && (($load_mode == "register") || ($load_mode == "remove"))) {
 382                 // Then redirect to logout
 383                 //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, ": LOAD!");
 384                 LOAD_URL("modules.php?module=admin&logout=1&".$load_mode."=sql_patches");
 385         } // END - if
 386 }
 387
 388 // Check if given extension is active
 389 function EXT_IS_ACTIVE ($ext_name) {
 390         global $cacheArray, $_CONFIG;
 391
 392         // Extensions are all inactive during installation
 393         if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing')) || (empty($ext_name))) return false;
 394
 395         // Not active is the default
 396         $active = "N";
 397
 398         // Check cache
 399         if (!empty($cacheArray['extensions']['ext_active'][$ext_name])) {
 400                 // Load from cache
 401                 //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, "CACHE! ext_name={$ext_name}");
 402                 $active = $cacheArray['extensions']['ext_active'][$ext_name];
 403
 404                 // Count cache hits
 405                 if (isset($_CONFIG['cache_hits'])) $_CONFIG['cache_hits']++;
 406         } elseif (($ext_name == "cache") || (GET_EXT_VERSION("cache") == "")) {
 407                 //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, "DB! ext_name={$ext_name}");
 408                 // Load from database
 409                 $result = SQL_QUERY_ESC("SELECT ext_active FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 410                         array($ext_name), __FILE__, __LINE__);
 411
 412                 // Entry found?
 413                 if (SQL_NUMROWS($result) == 0) {
 414                         // Extension was not found!
 415                         return false;
 416                 } // END - if
 417
 418                 // Load entry
 419                 list($active) = SQL_FETCHROW($result);
 420
 421                 // Free result
 422                 SQL_FREERESULT($result);
 423
 424                 // Write cache array
 425                 //* DEBUG: */ echo $ext_name."[DB]: {$active}");
 426                 $cacheArray['extensions']['ext_active'][$ext_name] = $active;
 427         } else {
 428                 // Extension not active!
 429                 //* DEBUG: */ echo $ext_name.": Not active!");
 430                 $cacheArray['extensions']['ext_active'][$ext_name] = "N";
 431         }
 432
 433         // Debug message
 434         //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, " ext_name={$ext_name},active={$active}");
 435
 436         // Is this extension activated? (For admins we always have active extensions...)
 437         return ($active == "Y");
 438 }
 439 // Get version from extensions
 440 function GET_EXT_VERSION ($ext_name) {
 441         global $cacheArray, $_CONFIG, $cacheInstance;
 442         $ret = false;
 443
 444         // Extensions are all inactive during installation
 445         if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing'))) return "";
 446         //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, ": ext_name={$ext_name}");
 447
 448         // Is the cache written?
 449         if (!empty($cacheArray['extensions']['ext_version'][$ext_name])) {
 450                 // Load data from cache
 451                 //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, ": CACHE!");
 452                 $ret = $cacheArray['extensions']['ext_version'][$ext_name];
 453
 454                 // Count cache hits
 455                 if (isset($_CONFIG['cache_hits'])) $_CONFIG['cache_hits']++; else $_CONFIG['cache_hits'] = 1;
 456         } elseif (!is_object($cacheInstance)) {
 457                 // Load from database
 458                 $result = SQL_QUERY_ESC("SELECT ext_version FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 459                  array($ext_name), __FILE__, __LINE__);
 460                 list($ret) = SQL_FETCHROW($result);
 461                 SQL_FREERESULT($result);
 462
 463                 // Set cache
 464                 $cacheArray['extensions']['ext_version'][$ext_name] = $ret;
 465         }
 466
 467         // Return result
 468         //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, ": ret={$ret}");
 469         return $ret;
 470 }
 471 //
 472 function EXTENSION_UPDATE ($file, $ext_name, $ext_ver, $dry_run=false) {
 473         // This shall never do a non-admin user!
 474         global $cacheInstance, $_CONFIG, $UPDATE_NOTES, $NOTES;
 475
 476         // Init arrays
 477         $SQLs = array(); $INC_POOL = array();
 478
 479         // Only admins are allowed to update extensions
 480         if ((!IS_ADMIN()) || (empty($ext_name))) return false;
 481
 482         // Load extension in update mode
 483         LOAD_EXTENSION($ext_name, "update". $ext_ver, $dry_run);
 484
 485         if (!empty($EXT_UPDATE_DEPENDS)) {
 486                 // Update another extension first!
 487                 $test = EXTENSION_UPDATE(("ext-".$EXT_UPDATE_DEPENDS.".php"), $EXT_UPDATE_DEPENDS, GET_EXT_VERSION($EXT_UPDATE_DEPENDS), $dry_run);
 488         }
 489
 490         // Save version history
 491         $history = $EXT_VER_HISTORY;
 492
 493         // Check if version is updated
 494         if ((($EXT_VERSION != $ext_ver) || ($dry_run)) && (is_array($history))) {
 495                 // Search for starting point
 496                 $start = array_search($ext_ver, $history);
 497                 $NOTES = "";
 498
 499                 // And load SQL queries in order of version history
 500                 for ($idx = ($start + 1); $idx < sizeof($history); $idx++) {
 501                         // Remove old SQLs array to prevent possible bugs
 502                         if (!$dry_run) { unset($SQLs); $SQLs = array(); }
 503
 504                         // Set extension version
 505                         $ver = $history[$idx];
 506
 507                         // Load again...
 508                         LOAD_EXTENSION($ext_name, "update", $ver, $dry_run);
 509
 510                         // Add notes
 511                         if ($_CONFIG['verbose_sql'] == "Y") {
 512                                 if (!empty($UPDATE_NOTES)) {
 513                                         // Update notes found
 514                                         $NOTES .= ("<div class=\"update_notes\"><strong>v".$ver.":</strong><br />".$UPDATE_NOTES."</div>");
 515                                         $UPDATE_NOTES = "";
 516                                 } elseif ($ver == "0.0") {
 517                                         // Initial release
 518                                         $NOTES .= ("<div class=\"update_notes\"><strong>v".$ver.":</strong><br />".INITIAL_RELEASE."</div>");
 519                                 } else {
 520                                         $NOTES .= ("<div class=\"update_notes\"><strong>v".$ver.":</strong><br /><I>".NO_UPDATE_NOTES."</I></div>");
 521                                 }
 522                         } // END - if
 523
 524                         // In real-mode execute any existing includes
 525                         if ((!$dry_run) && (count($INC_POOL) > 0)) {
 526                                 // Include all files
 527                                 foreach ($INC_POOL as $fqfn) {
 528                                         require_once($fqfn);
 529                                 } // END - foreach
 530                         } // END - if
 531
 532                         // Run SQLs
 533                         if ((is_array($SQLs)) && (!$dry_run)) {
 534                                 // Run SQL commands
 535                                 foreach ($SQLs as $sql)
 536                                 {
 537                                         $sql = trim($sql);
 538                                         if (!empty($sql))
 539                                         {
 540                                                 // Do we have an "ALTER TABLE" command?
 541                                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
 542                                                         // Analyse the alteration command
 543                                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
 544                                                 } else {
 545                                                         // Run regular SQL command
 546                                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 547                                                 }
 548                                         }
 549                                 }
 550                         } elseif (GET_EXT_VERSION("sql_patches") == "") {
 551                                 // Remove SQLs if extension is not installed
 552                                 $SQLs = array();
 553                         }
 554                 } // END - for
 555
 556                 if (!$dry_run) {
 557                         // In normal mode insert task and update extension's version...
 558                         $ext_subj = "[UPDATE-".$ext_name."-".$EXT_VERSION.":] ".ADMIN_UPDATE_EXT_SUBJ;
 559
 560                         // Create task
 561                         CREATE_EXTENSION_UPDATE_TASK(GET_CURRENT_ADMIN_ID(), $ext_subj, addslashes($NOTES));
 562
 563                         // Update extension's version
 564                         $result = SQL_QUERY_ESC("UPDATE "._MYSQL_PREFIX."_extensions SET ext_version='%s' WHERE ext_name='%s' LIMIT 1",
 565                                 array($EXT_VERSION, $ext_name), __FILE__, __LINE__);
 566
 567                         // Remove array
 568                         unset($SQLs);
 569
 570                         // Run filters on success extension update
 571                         RUN_FILTER('extension_update', $ext_name);
 572                 } else {
 573                         // In "dry-run" mode return array with SQL commands
 574                         return $SQLs;
 575                 }
 576         }
 577 }
 578
 579 // Output verbose SQL table for extension
 580 function EXTENSION_VERBOSE_TABLE ($queries = array(), $title = ADMIN_SQLS_EXECUTED_ON_REMOVAL, $dashed = "", $switch = false, $width = "480") {
 581         global $_CONFIG, $SQLs;
 582
 583         // Are there some queries in $queries?
 584         if (count($queries) > 0) {
 585                 // Then use them instead!
 586                 $SQLs = $queries;
 587         } // END - if
 588
 589         // Init variables
 590         $S = false; $SW = 2; $i = 1;
 591         $OUT = "";
 592
 593         // Do we have queries?
 594         if ((is_array($SQLs)) && (GET_EXT_VERSION("sql_patches") >= "0.0.7") && ($_CONFIG['verbose_sql'] == "Y")) {
 595                 $OUT  = "<div align=\"center\">
 596 <table border=\"0\" cellspacing=\"0\" cellpadding=\"0\" width=\"".$width."\" align=\"center\"".$dashed.">
 597 <tr>
 598   <td colspan=\"2\" align=\"center\" class=\"admin_title bottom2\" height=\"24\">
 599     <strong>".$title.":</strong>
 600   </td>
 601 </tr>\n";
 602                 foreach ($SQLs as $idx => $sql) {
 603                         $sql = trim($sql);
 604                         if (!empty($sql)) {
 605                                 $S = true;
 606                                 $OUT .= "<tr>
 607   <td class=\"switch_sw".(3 - $SW)." bottom2\" style=\"padding-left: 2px\" width=\"30\">".$i.".</td>
 608   <td class=\"switch_sw".(3 - $SW)." bottom2\" style=\"padding-left: 5px; padding-right: 5px\">
 609     ".$sql."
 610   </td>
 611 </tr>\n";
 612                                 if ($switch) $SW = 3 - $SW;
 613                                 $i++;
 614                         }
 615                 }
 616         }
 617
 618         if ((!$S) && (GET_EXT_VERSION("sql_patches") >= "0.0.7") && ($_CONFIG['verbose_sql'] == "Y")) {
 619                 // No addional SQL commands to run
 620                 $OUT .= "<tr>
 621   <td colspan=\"2\" align=\"center\" class=\"switch_sw2 bottom2\" height=\"24\">
 622     <font class=\"admin_note\">".ADMIN_NO_ADDIONAL_SQLS."</font>
 623   </td>
 624 </tr>\n";
 625         }
 626
 627         if (!empty($OUT)) {
 628                 // Add missing close-table tag
 629                 $OUT .= "</table>
 630 </div>\n";
 631         }
 632
 633         // Return output
 634         return $OUT;
 635 }
 636
 637 // Get extension name from id
 638 function GET_EXT_NAME ($ext_id) {
 639         global $cacheArray, $_CONFIG;
 640
 641         // Init extension name
 642         $ret = "";
 643
 644         // Is cache there?
 645         if (!empty($cacheArray['extensions']['ext_name'][$ext_id])) {
 646                 // Load from cache
 647                 $ret = $cacheArray['extensions']['ext_name'][$ext_id];
 648
 649                 // Count cache hits
 650                 if (isset($_CONFIG['cache_hits'])) { $_CONFIG['cache_hits']++; } else { $_CONFIG['cache_hits'] = 1; }
 651         } elseif (!EXT_IS_ACTIVE("cache")) {
 652                 // Load from database
 653                 $result = SQL_QUERY_ESC("SELECT ext_name FROM "._MYSQL_PREFIX."_extensions WHERE id=%s LIMIT 1",
 654                         array(bigintval($ext_id)), __FILE__, __LINE__);
 655                 list($ret) = SQL_FETCHROW($result);
 656                 SQL_FREERESULT($result);
 657         }
 658         return $ret;
 659 }
 660
 661 // Get extension id from name
 662 function GET_EXT_ID ($ext_name) {
 663         global $cacheArray, $_CONFIG;
 664
 665         // Init ID number
 666         $ret = 0;
 667         if (isset($cacheArray['extensions']['ext_id'][$ext_name])) {
 668                 // Load from cache
 669                 $ret = $cacheArray['extensions']['ext_id'][$ext_name];
 670
 671                 // Count cache hits
 672                 if (isset($_CONFIG['cache_hits'])) { $_CONFIG['cache_hits']++; } else { $_CONFIG['cache_hits'] = 1; }
 673         } elseif (!EXT_IS_ACTIVE("cache")) {
 674                 // Load from database
 675                 $result = SQL_QUERY_ESC("SELECT id FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 676                         array($ext_name), __FILE__, __LINE__);
 677                 list($ret) = SQL_FETCHROW($result);
 678                 SQL_FREERESULT($result);
 679         }
 680
 681         // Return value
 682         return $ret;
 683 }
 684
 685 // Activate given extension
 686 function ACTIVATE_EXTENSION ($ext_name) {
 687         // Activate the extension
 688         $result = SQL_QUERY_ESC("UPDATE "._MYSQL_PREFIX."_extensions SET ext_active='Y' WHERE ext_name='%s' LIMIT 1",
 689                 array($ext_name), __FILE__, __LINE__);
 690
 691         // Extension has been activated?
 692         if (SQL_AFFECTEDROWS() == 1) {
 693                 // Then run all queries
 694                 EXTENSION_RUN_SQLS(GET_EXT_ID($ext_name), "activate");
 695         } // END - if
 696 }
 697
 698 // Deactivate given extension
 699 function DEACTIVATE_EXTENSION($ext_name) {
 700         // Activate the extension
 701         $result = SQL_QUERY_ESC("UPDATE "._MYSQL_PREFIX."_extensions SET ext_active='N' WHERE ext_name='%s' LIMIT 1",
 702                 array($ext_name), __FILE__, __LINE__);
 703
 704         // Extension has been activated?
 705         if (SQL_AFFECTEDROWS() == 1) {
 706                 // Then run all queries
 707                 EXTENSION_RUN_SQLS(GET_EXT_ID($ext_name), "deactivate");
 708
 709                 // Create new task
 710                 CREATE_EXTENSION_DEACTIVATION_TASK($ext_name);
 711
 712                 // Notify the admin
 713                 SEND_ADMIN_NOTIFICATION(ADMIN_SUBJECT_EXTENSION_DEACTIVATED, "admin_ext_deactivated", array('ext_name' => $ext_name));
 714         } // END - if
 715 }
 716
 717 // Checks wether the extension is older than given
 718 function EXT_VERSION_IS_OLDER ($ext_name, $ext_ver) {
 719         // Get current extension version
 720         $currVersion = GET_EXT_VERSION($ext_name);
 721
 722         // Remove all dots from both versions
 723         $currVersion = str_replace(".", "", $currVersion);
 724         $ext_ver = str_replace(".", "", $ext_ver);
 725
 726         // Now compare both and return the result
 727         return ($currVersion < $ext_ver);
 728 }
 729
 730 // Creates a new task for updated extension
 731 function CREATE_EXTENSION_UPDATE_TASK ($admin_id, $subject, $notes) {
 732         // Check if task is not there
 733         $result = SQL_QUERY_ESC("SELECT id FROM "._MYSQL_PREFIX."_task_system WHERE subject='%s' LIMIT 1",
 734                 array($subject), __FILE__, __LINE__);
 735         if (SQL_NUMROWS($result) == 0) {
 736                 // Task not created so it's a brand-new extension which we need to register and create a task for!
 737                 $result = SQL_QUERY_ESC("INSERT INTO "._MYSQL_PREFIX."_task_system (assigned_admin, userid, status, task_type, subject, text, task_created) VALUES ('%s','0','NEW','EXTENSION_UPDATE','%s','%s', UNIX_TIMESTAMP())",
 738                         array($admin_id, $subject, $notes), __FILE__, __LINE__);
 739         } // END - if
 740
 741         // Free memory
 742         SQL_FREERESULT($result);
 743 }
 744
 745 // Creates a new task for newly installed extension
 746 function CREATE_NEW_EXTENSION_TASK ($admin_id, $subject, $ext) {
 747         // Not installed and do we have created a task for the admin?
 748         $result = SQL_QUERY_ESC("SELECT `id` FROM `"._MYSQL_PREFIX."_task_system` WHERE `subject` LIKE '%s%%' LIMIT 1",
 749                 array($subject), __FILE__, __LINE__);
 750         if ((SQL_NUMROWS($result) == 0) && (GET_EXT_VERSION($ext) == "")) {
 751                 // Template file
 752                 $tpl = sprintf("%stemplates/%s/html/ext/ext_%s.tpl",
 753                         PATH,
 754                         GET_LANGUAGE(),
 755                         $ext
 756                 );
 757
 758                 // Load text for task
 759                 if (FILE_READABLE($tpl)) {
 760                         // Load extension's own text template (HTML!)
 761                         $msg = LOAD_TEMPLATE("ext_".$ext, true);
 762                 } else {
 763                         // Load default message
 764                         $msg = LOAD_TEMPLATE("admin_new_ext", "", 0);
 765                 }
 766
 767                 // Task not created so it's a brand-new extension which we need to register and create a task for!
 768                 $result_insert = SQL_QUERY_ESC("INSERT INTO "._MYSQL_PREFIX."_task_system (assigned_admin, userid, status, task_type, subject, text, task_created)
 769 VALUES (%s,0,'NEW','EXTENSION','%s','%s',UNIX_TIMESTAMP())",
 770                         array(
 771                                 $admin_id,
 772                                 $subject,
 773                                 addslashes($msg),
 774                         ),  __FILE__, __LINE__, true, false
 775                 );
 776         } // END - if
 777
 778         // Free memory
 779         SQL_FREERESULT($result);
 780 }
 781
 782 // Creates a task for automatically deactivated (deprecated) extension
 783 function CREATE_EXTENSION_DEACTIVATION_TASK ($ext) {
 784         // Create subject line
 785         $subject = sprintf("[%s:] %s", $ext, TASK_SUBJ_EXTENSION_DEACTIVATED);
 786
 787         // Not installed and do we have created a task for the admin?
 788         $result = SQL_QUERY_ESC("SELECT `id` FROM `"._MYSQL_PREFIX."_task_system` WHERE `subject` = '%s' LIMIT 1",
 789                 array($subject), __FILE__, __LINE__);
 790         if ((SQL_NUMROWS($result) == 0) && (GET_EXT_VERSION($ext) != "")) {
 791                 // Task not created so add it
 792                 $result_insert = SQL_QUERY_ESC("INSERT INTO "._MYSQL_PREFIX."_task_system (assigned_admin, userid, status, task_type, subject, text, task_created)
 793 VALUES (0,0,'NEW','EXTENSION_DEACTIVATION','%s','%s',UNIX_TIMESTAMP())",
 794                         array(
 795                                 $subject,
 796                                 addslashes(LOAD_TEMPLATE("task_ext_deactivated", true, $ext)),
 797                         ),  __FILE__, __LINE__, true, false
 798                 );
 799         } // END - if
 800
 801         // Free memory
 802         SQL_FREERESULT($result);
 803 }
 804
 805 //
 806 ?>