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 //
  41 function EXTENSION_REGISTER ($ext_name, $id, $dry_run=false)
  42 {
  43         global $NOTES, $_CONFIG, $INC_POOL, $cacheInstance;
  44         // We want to register an extension and registration status is by default "failed" (= false)
  45         $EXT_LOAD_MODE = "register"; $ret = false; $SQLs = array();
  46         $INC_POOL = array();
  47
  48         // This shall never do a non-admin user!
  49         if (!IS_ADMIN()) return false;
  50
  51         // Is this extension already installed?
  52         if (EXT_IS_ACTIVE($ext_name)) return false;
  53
  54         // Generate file name
  55         $file = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
  56
  57         // Does this extension exists?
  58         if (FILE_READABLE($file))
  59         {
  60                 // Extension was found so we can load it in registration mode
  61                 require($file);
  62
  63                 // And run possible updates
  64                 $EXT_LOAD_MODE = "update"; $EXT_UPDATE_DEPENDS = "";
  65                 foreach ($EXT_VER_HISTORY as $EXT_VER)
  66                 {
  67                         require($file);
  68                         if (((GET_EXT_VERSION("sql_patches") != '') && ($_CONFIG['verbose_sql'] == "Y")) || (!EXT_IS_ACTIVE("sql_patches")))
  69                         {
  70                                 if (!empty($UPDATE_NOTES))
  71                                 {
  72                                         // Update notes found
  73                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".$UPDATE_NOTES."<br /><br />\n";
  74                                         $UPDATE_NOTES = "";
  75                                 }
  76                                  elseif (($EXT_VER == "0.0") || ($EXT_VER == "0.0.0"))
  77                                 {
  78                                         // Initial release
  79                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".INITIAL_RELEASE."<br /><br />\n";
  80                                 }
  81                                  else
  82                                 {
  83                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br /><I>".NO_UPDATE_NOTES."</I><br /><br />\n";
  84                                 }
  85                         }
  86                 }
  87
  88                 // Does this extension depends on an outstanding update of another update?
  89                 if (!empty($EXT_UPDATE_DEPENDS))
  90                 {
  91                         // Backup SQL commands and clear current
  92                         $SQLs2 = $SQLs;  $SQLs = array(); $test = false;
  93
  94                         // Backup language as well
  95                         $LANG_BCK = $EXT_LANG_PREFIX; $EXT_ALWAYS_ACTIVE = "N";
  96
  97                         // Load required extension also in update mode
  98                         $file = sprintf("%sinc/extensions/ext-%s.php", PATH, $EXT_UPDATE_DEPENDS);
  99
 100                         // Check for required file
 101                         if (FILE_READABLE($file))
 102                         {
 103                                 // File exists so let's load it
 104                                 $VER_BACKUP = $EXT_VERSION;
 105                                 require($file);
 106                                 $EXT_VERSION = $VER_BACKUP;
 107
 108                                 // If versions mismatch update extension first
 109                                 $ext_ver = GET_EXT_VERSION($EXT_UPDATE_DEPENDS);
 110                                 if (empty($ext_ver))
 111                                 {
 112                                         // Extension not registered so far so first load task's ID...
 113                                         $result = SQL_QUERY_ESC("SELECT id FROM "._MYSQL_PREFIX."_task_system WHERE task_type='EXTENSION' AND subject LIKE '[%s:]%%' LIMIT 1",
 114                                          array($EXT_UPDATE_DEPENDS), __FILE__, __LINE__);
 115                                         if (SQL_NUMROWS($result) == 1)
 116                                         {
 117                                                 // Task found so load task's ID and register extension...
 118                                                 list($task) = SQL_FETCHROW($result);
 119                                                 SQL_FREERESULT($result);
 120                                                 $test = EXTENSION_REGISTER($EXT_UPDATE_DEPENDS, $task, $dry_run);
 121                                         }
 122                                 }
 123                                  elseif ($ext_ver != $EXT_VERSION)
 124                                 {
 125                                         // Ok, update this extension now
 126                                         EXTENSION_UPDATE(basename($file), $EXT_UPDATE_DEPENDS, $ext_ver, $dry_run);
 127
 128                                         // All okay!
 129                                         $test = true;
 130                                 }
 131                                  else
 132                                 {
 133                                         // Nothing to register / update before...
 134                                         $test = true;
 135                                 }
 136                         }
 137                          else
 138                         {
 139                                 // Required file for update does not exists!
 140                                 $test = true;
 141                                 // But this is fine for the first time...
 142                         }
 143
 144                         // Finally restore previous SQLs
 145                         $SQLs = $SQLs2; unset($SQLs2);
 146                         $EXT_LANG_PREFIX = $LANG_BCK;
 147                 }
 148                  else
 149                 {
 150                         // Does not depend on an other extension
 151                         $test = true;
 152                 }
 153
 154                 // Switch back to register mode
 155                 $EXT_LOAD_MODE = "register";
 156
 157                 // Does everthing before wents ok?
 158                 if ($test) {
 159                         // "Dry-run-mode" activated?
 160                         if (!$dry_run) {
 161                                 // Run all SQLs
 162                                 foreach ($SQLs as $sql) {
 163                                         // Trim spaces away which we don't need
 164                                         $sql = trim($sql);
 165
 166                                         // Is there still an SQL query?
 167                                         if (!empty($sql)) {
 168                                                 // Do we have an "ALTER TABLE" command?
 169                                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
 170                                                         // Analyse the alteration command
 171                                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
 172                                                 } else {
 173                                                         // Run regular SQL command
 174                                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 175                                                 }
 176                                         } // END - if
 177                                 } // END - foreach
 178
 179                                 // Remove cache file(s) if extension is active
 180                                 if ((EXT_IS_ACTIVE("cache")) || (GET_EXT_VERSION("cache") != "")) {
 181                                         //* DEBUG: */ echo __LINE__.": DESTROY!<br />\n";
 182                                         // Remove cache files
 183                                         if ($cacheInstance->cache_file("extensions", true)) $cacheInstance->cache_destroy();
 184                                         if ($cacheInstance->cache_file("mod_reg", true))    $cacheInstance->cache_destroy();
 185                                         if ($cacheInstance->cache_file("config", true))     $cacheInstance->cache_destroy();
 186                                 } // END - if
 187
 188                                 // Check for added include files
 189                                 if (count($INC_POOL > 0)) {
 190                                         // Loads every include file
 191                                         foreach ($INC_POOL as $inc) {
 192                                                 require_once($inc);
 193                                         } // END - foreach
 194                                 } // END - if
 195
 196                                 // Register extension
 197                                 $result = SQL_QUERY_ESC("INSERT INTO "._MYSQL_PREFIX."_extensions (ext_name, ext_lang_file, ext_active, ext_version) VALUES ('%s', '%s', '%s', '%s')",
 198                                  array($ext_name, $EXT_LANG_PREFIX, $EXT_ALWAYS_ACTIVE, $EXT_VERSION), __FILE__, __LINE__);
 199
 200                                 // Update task management
 201                                 ADMIN_SOLVE_TASK($id);
 202
 203                                 // @TODO This causes the whole (!) menu cache being purged
 204                                 CACHE_PURGE_ADMIN_MENU();
 205
 206                                 // In normal mode return a true on success
 207                                 $ret = true;
 208
 209                                 // Remove SQLs
 210                                 unset($SQLs);
 211                         } else {
 212                                 // Rewrite SQL command to keep { and } inside
 213                                 foreach ($SQLs as $key => $sql) {
 214                                         $sql = str_replace('{', "&#123;", str_replace('}', "&#125;", $sql));
 215                                         $SQLs[$key] = $sql;
 216                                 } // END - foreach
 217
 218                                 // In  "dry-run" mode return array with all SQL commands
 219                                 $ret = $SQLs;
 220
 221                                 // Remove all SQL commands
 222                                 unset($SQLs);
 223                         }
 224                 } else {
 225                         // No, an error occurs while registering extension :-(
 226                         $ret = false;
 227                 }
 228         } elseif (($id > 0) && (!empty($ext_name))) {
 229                 // Remove task from system when id and extension's name is valid
 230                 $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_task_system WHERE id=%s AND status='NEW' LIMIT 1",
 231                  array(bigintval($id)), __FILE__, __LINE__);
 232         }
 233
 234         // Is this the sql_patches?
 235         //* DEBUG: */ echo __LINE__.":{$ext_name}/{$EXT_LOAD_MODE}<br />\n";
 236         if (($ext_name == "sql_patches") && (($EXT_LOAD_MODE == "register") || ($EXT_LOAD_MODE == "remove")) && (!$dry_run) && ($test)) {
 237                 // Then redirect to logout
 238                 //* DEBUG: */ echo __LINE__.": LOAD!<br />\n";
 239                 LOAD_URL("modules.php?module=admin&logout=1&".$EXT_LOAD_MODE."=sql_patches");
 240         } // END - if
 241
 242         // Return status code
 243         return $ret;
 244 }
 245 //
 246 function EXTENSION_RUN_SQLS($id, $EXT_LOAD_MODE) {
 247         global $cacheInstance;
 248         $SQLs = array();
 249
 250         // By default no SQL has been executed
 251         $sqlRan = false;
 252
 253         // This shall never do a non-admin user!
 254         if (!IS_ADMIN()) return false;
 255
 256         // Get extension's name
 257         $ext_name = GET_EXT_NAME($id);
 258         if (empty($ext_name)) return false;
 259
 260         // Load extension in detected mode
 261         //* DEBUG: */ echo __FUNCTION__.":ext_name[{$id}]={$ext_name}<br />\n";
 262         $file = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
 263         if (FILE_READABLE($file)) {
 264                 // Load the include
 265                 require($file);
 266         }
 267
 268         //* DEBUG: */ echo __FUNCTION__.":SQLs::count=".count($SQLs)."<br />\n";
 269         if ((is_array($SQLs) && (sizeof($SQLs) > 0))) {
 270                 // Run SQL commands...
 271                 foreach ($SQLs as $sql) {
 272                         // Trim spaces away which we don't need
 273                         $sql = trim($sql);
 274
 275                         // Is there still an SQL query?
 276                         if (!empty($sql)) {
 277                                 // Do we have an "ALTER TABLE" command?
 278                                 //* DEBUG: */ echo __FUNCTION__.":SQL={$SQL}<br />\n";
 279                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
 280                                         // Analyse the alteration command
 281                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
 282                                 } else {
 283                                         // Run regular SQL command
 284                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 285                                 }
 286
 287                                 // An SQL has been executed
 288                                 $sqlRan = true;
 289                         } // END - if
 290                 } // END - foreach
 291
 292                 // Removal mode?
 293                 if ($EXT_LOAD_MODE == "remove") {
 294                         // Delete this extension (remember to remove it from your server *before* you click on welcome!
 295                         $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_extensions WHERE id=%s LIMIT 1",
 296                          array($id), __FILE__, __LINE__);
 297                 } // END - if
 298
 299                 //* DEBUG: */ echo __FUNCTION__.":mode={$EXT_LOAD_MODE}<br />\n";
 300
 301                 // Remove cache file(s) if extension is active
 302                 if (((EXT_IS_ACTIVE("cache")) || (GET_EXT_VERSION("cache") != "")) && (((SQL_AFFECTEDROWS() == 1) && ($EXT_LOAD_MODE == "remove")) || ($sqlRan === true))) {
 303                         //* DEBUG: */ echo __LINE__.": DESTROY!<br />\n";
 304                         // Remove cache files
 305                         if ($cacheInstance->cache_file("extensions", true)) $cacheInstance->cache_destroy();
 306                         if ($cacheInstance->cache_file("mod_reg", true))    $cacheInstance->cache_destroy();
 307                         if ($cacheInstance->cache_file("config", true))     $cacheInstance->cache_destroy();
 308
 309                         // @TODO This causes the whole (!) menu cache being purged
 310                         CACHE_PURGE_ADMIN_MENU();
 311                 } // END - if
 312
 313                 // Is this the sql_patches?
 314                 //* DEBUG: */ echo __LINE__.": {$id}/{$ext_name}/{$EXT_LOAD_MODE}<br />\n";
 315                 if (($ext_name == "sql_patches") && (($EXT_LOAD_MODE == "register") || ($EXT_LOAD_MODE == "remove"))) {
 316                         // Then redirect to logout
 317                         //* DEBUG: */ echo __LINE__.": LOAD!<br />\n";
 318                         LOAD_URL("modules.php?module=admin&logout=1&".$EXT_LOAD_MODE."=sql_patches");
 319                 } // END - if
 320         } // END - if
 321 }
 322 // Check if given extension is active
 323 function EXT_IS_ACTIVE ($ext_name) {
 324         global $cacheArray, $_CONFIG;
 325
 326         // Extensions are all inactive during installation
 327         if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing')) || (empty($ext_name))) return false;
 328
 329         // Not active is the default
 330         $active = "N";
 331
 332         // Check cache
 333         if (!empty($cacheArray['extensions']['ext_active'][$ext_name])) {
 334                 // Load from cache
 335                 //* DEBUG: */ echo "CACHE! ext_name={$ext_name}<br />\n";
 336                 $active = $cacheArray['extensions']['ext_active'][$ext_name];
 337
 338                 // Count cache hits
 339                 if (isset($_CONFIG['cache_hits'])) $_CONFIG['cache_hits']++;
 340         } elseif (($ext_name == "cache") || (GET_EXT_VERSION("cache") == "")) {
 341                 //* DEBUG: */ echo "DB! ext_name={$ext_name}<br />\n";
 342                 // Load from database
 343                 $result = SQL_QUERY_ESC("SELECT ext_active FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 344                  array($ext_name), __FILE__, __LINE__);
 345                 if (SQL_NUMROWS($result) == 0) {
 346                         // Extension was not found!
 347                         return false;
 348                 }
 349                 list($active) = SQL_FETCHROW($result);
 350                 //* DEBUG: */ echo $ext_name."[DB]: {$active}<br />\n";
 351                 SQL_FREERESULT($result);
 352
 353                 // Write cache array
 354                 $cacheArray['extensions']['ext_active'][$ext_name] = $active;
 355         } else {
 356                 // Extension not active!
 357                 //* DEBUG: */ echo $ext_name.": Not active!<br />\n";
 358                 $cacheArray['extensions']['ext_active'][$ext_name] = "N";
 359         }
 360
 361         // Create FQFN for extension file
 362         $inc = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
 363
 364         // Debug message
 365         //DEBUG_LOG(__FUNCTION__.": ext_name={$ext_name},active={$active}");
 366
 367         // Is this extension activated? (For admins we always have active extensions...)
 368         return ($active == "Y");
 369 }
 370 // Get version from extensions
 371 function GET_EXT_VERSION ($ext_name) {
 372         global $cacheArray, $_CONFIG, $cacheInstance;
 373         $ret = false;
 374
 375         // Extensions are all inactive during installation
 376         if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing'))) return "";
 377         //* DEBUG: */ echo __FUNCTION__.": ext_name={$ext_name}<br />\n";
 378
 379         // Is the cache written?
 380         if (!empty($cacheArray['extensions']['ext_version'][$ext_name])) {
 381                 // Load data from cache
 382                 //* DEBUG: */ echo __FUNCTION__.": CACHE!<br />\n";
 383                 $ret = $cacheArray['extensions']['ext_version'][$ext_name];
 384
 385                 // Count cache hits
 386                 if (isset($_CONFIG['cache_hits'])) $_CONFIG['cache_hits']++; else $_CONFIG['cache_hits'] = 1;
 387         } elseif (!is_object($cacheInstance)) {
 388                 // Load from database
 389                 $result = SQL_QUERY_ESC("SELECT ext_version FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 390                  array($ext_name), __FILE__, __LINE__);
 391                 list($ret) = SQL_FETCHROW($result);
 392                 SQL_FREERESULT($result);
 393
 394                 // Set cache
 395                 $cacheArray['extensions']['ext_version'][$ext_name] = $ret;
 396         }
 397
 398         // Return result
 399         //* DEBUG: */ echo __FUNCTION__.": ret={$ret}<br />\n";
 400         return $ret;
 401 }
 402 //
 403 function EXTENSION_UPDATE($file, $ext, $EXT_VER, $dry_run=false)
 404 {
 405         // This shall never do a non-admin user!
 406         global $cacheInstance, $_CONFIG, $NOTES; $SQLs = array();
 407         if ((!IS_ADMIN()) || (empty($ext))) return false;
 408
 409         // Load extension in update mode
 410         $EXT_LOAD_MODE = "update"; $EXT_UPDATE_DEPENDS = ""; $NOTES = "";
 411         include(PATH."inc/extensions/".$file);
 412         if (!empty($EXT_UPDATE_DEPENDS))
 413         {
 414                 // Update another extension first!
 415                 $test = EXTENSION_UPDATE(("ext-".$EXT_UPDATE_DEPENDS.".php"), $EXT_UPDATE_DEPENDS, GET_EXT_VERSION($EXT_UPDATE_DEPENDS), $dry_run);
 416         }
 417
 418         // Check if version is updated
 419         if ((($EXT_VERSION != $EXT_VER) || ($dry_run)) && (is_array($EXT_VER_HISTORY)))
 420         {
 421                 // Search for starting point
 422                 $start = array_search($EXT_VER, $EXT_VER_HISTORY);
 423                 $NOTES = "";
 424
 425                 // And load SQL queries in order of version history
 426                 for ($idx = ($start + 1); $idx < sizeof($EXT_VER_HISTORY); $idx++)
 427                 {
 428                         // Remove old SQLs array to prevent possible bugs
 429                         if (!$dry_run) { unset($SQLs); $SQLs = array(); }
 430
 431                         // Set version
 432                         $EXT_VER = $EXT_VER_HISTORY[$idx];
 433
 434                         // Include again...
 435                         include(PATH."inc/extensions/".$file);
 436
 437                         // Add notes
 438                         if ($_CONFIG['verbose_sql'] == "Y")
 439                         {
 440                                 $EXT_VER = $EXT_VER_HISTORY[$idx];
 441                                 if (!empty($UPDATE_NOTES))
 442                                 {
 443                                         // Update notes found
 444                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".$UPDATE_NOTES."<br /><br />\n";
 445                                         $UPDATE_NOTES = "";
 446                                 }
 447                                  elseif ($EXT_VER == "0.0")
 448                                 {
 449                                         // Initial release
 450                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".INITIAL_RELEASE."<br /><br />\n";
 451                                 }
 452                                  else
 453                                 {
 454                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br /><I>".NO_UPDATE_NOTES."</I><br /><br />\n";
 455                                 }
 456                         }
 457
 458                         // Run SQLs
 459                         if ((is_array($SQLs)) && (!$dry_run))
 460                         {
 461                                 // Run SQL commands
 462                                 foreach ($SQLs as $sql)
 463                                 {
 464                                         $sql = trim($sql);
 465                                         if (!empty($sql))
 466                                         {
 467                                                 // Do we have an "ALTER TABLE" command?
 468                                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
 469                                                         // Analyse the alteration command
 470                                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
 471                                                 } else {
 472                                                         // Run regular SQL command
 473                                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 474                                                 }
 475                                         }
 476                                 }
 477                         } elseif (GET_EXT_VERSION("sql_patches") == "") {
 478                                 // Remove SQLs if extension is not installed
 479                                 $SQLs = array();
 480                         }
 481                 }
 482
 483                 if (!$dry_run)
 484                 {
 485                         // In normal mode insert task and update extension's version...
 486                         $ext_subj = "[UPDATE-".$ext."-".$EXT_VERSION.":] ".ADMIN_UPDATE_EXT_SUBJ;
 487
 488                         // Create task
 489                         CREATE_EXTENSION_UPDATE_TASK(GET_ADMIN_ID(get_session('admin_login')), $ext_subj, addslashes($NOTES));
 490
 491                         // Update extension's version
 492                         $result = SQL_QUERY_ESC("UPDATE "._MYSQL_PREFIX."_extensions SET ext_version='%s' WHERE ext_name='%s' LIMIT 1",
 493                          array($EXT_VERSION, $ext), __FILE__, __LINE__);
 494
 495                         // Update cache
 496                         if (EXT_IS_ACTIVE("cache")) {
 497                                 if ($cacheInstance->cache_file("extensions", true) == true) $cacheInstance->cache_destroy();
 498                                 if ($cacheInstance->cache_file("config", true) == true)     $cacheInstance->cache_destroy();
 499                                 if ($cacheInstance->cache_file("mod_reg", true) == true)    $cacheInstance->cache_destroy();
 500                         } // END - if
 501
 502                         // Remove array
 503                         unset($SQLs);
 504                 } else {
 505                         // In "dry-run" mode return array with SQL commands
 506                         return $SQLs;
 507                 }
 508         }
 509 }
 510 //
 511 function EXTENSION_VERBOSE_TABLE($SQLs, $title = ADMIN_SQLS_EXECUTED_ON_REMOVAL, $dashed = "", $switch = false, $WIDTH = "480") {
 512         global $_CONFIG;
 513
 514         $S = false; $SW = 2; $i = 1;
 515         $OUT = "";
 516         if ((is_array($SQLs)) && (GET_EXT_VERSION("sql_patches")) && ($_CONFIG['verbose_sql'] == "Y")) {
 517                 $OUT  = "<DIV align=\"center\">
 518 <TABLE border=\"0\" cellspacing=\"0\" cellpadding=\"0\" width=\"".$WIDTH."\" align=\"center\"".$dashed.">
 519 <TR>
 520   <TD colspan=\"2\" align=\"center\" class=\"admin_title bottom2\" height=\"24\">
 521     <STRONG>".$title.":</STRONG>
 522   </TD>
 523 </TR>\n";
 524                 foreach ($SQLs as $idx => $sql) {
 525                         $sql = trim($sql);
 526                         if (!empty($sql)) {
 527                                 $S = true;
 528                                 $OUT .= "<TR>
 529   <TD class=\"switch_sw".(3 - $SW)." bottom2\" style=\"padding-left: 2px\" width=\"30\">".$i.".</TD>
 530   <TD class=\"switch_sw".(3 - $SW)." bottom2\" style=\"padding-left: 5px; padding-right: 5px\">
 531     ".$sql."
 532   </TD>
 533 </TR>\n";
 534                                 if ($switch) $SW = 3 - $SW;
 535                                 $i++;
 536                         }
 537                 }
 538         }
 539
 540         if ((!$S) && (GET_EXT_VERSION("sql_patches")) && ($_CONFIG['verbose_sql'] == "Y")) {
 541                 // No addional SQL commands to run
 542                 $OUT .= "<TR>
 543   <TD colspan=\"2\" align=\"center\" class=\"switch_sw2 bottom2\" height=\"24\">
 544     <FONT class=\"admin_note\">".ADMIN_NO_ADDIONAL_SQLS."</FONT>
 545   </TD>
 546 </TR>\n";
 547         }
 548
 549         if (!empty($OUT)) {
 550                 // Add missing close-table tag
 551                 $OUT .= "</TABLE>
 552 </DIV>\n";
 553         }
 554
 555         // Return output
 556         return $OUT;
 557 }
 558 // Get extension name from id
 559 function GET_EXT_NAME ($id) {
 560         $ret = "";
 561         global $cacheArray, $_CONFIG;
 562         if (!empty($cacheArray['extensions']['ext_name'][$id])) {
 563                 // Load from cache
 564                 $ret = $cacheArray['extensions']['ext_name'][$id];
 565
 566                 // Count cache hits
 567                 $_CONFIG['cache_hits']++;
 568         } elseif (!EXT_IS_ACTIVE("cache")) {
 569                 // Load from database
 570                 $result = SQL_QUERY_ESC("SELECT ext_name FROM "._MYSQL_PREFIX."_extensions WHERE id=%s LIMIT 1",
 571                  array(bigintval($id)), __FILE__, __LINE__);
 572                 list($ret) = SQL_FETCHROW($result);
 573                 SQL_FREERESULT($result);
 574         }
 575         return $ret;
 576 }
 577 // Get extension id from name
 578 function GET_EXT_ID($name) {
 579         $ret = 0;
 580         global $cacheArray, $_CONFIG;
 581         if (isset($cacheArray['extensions']['ext_id'][$name])) {
 582                 // Load from cache
 583                 $ret = $cacheArray['extensions']['ext_id'][$name];
 584
 585                 // Count cache hits
 586                 $_CONFIG['cache_hits']++;
 587         } elseif (!EXT_IS_ACTIVE("cache")) {
 588                 // Load from database
 589                 $result = SQL_QUERY_ESC("SELECT id FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 590                  array($name), __FILE__, __LINE__);
 591                 list($ret) = SQL_FETCHROW($result);
 592                 SQL_FREERESULT($result);
 593         }
 594
 595         // Return value
 596         return $ret;
 597 }
 598 // Activate given extension
 599 function ACTIVATE_EXTENSION($ext_name) {
 600         // Activate the extension
 601         $result = SQL_QUERY_ESC("UPDATE "._MYSQL_PREFIX."_extensions SET ext_active='Y' WHERE ext_name='%s' LIMIT 1",
 602                 array($ext_name), __FILE__, __LINE__);
 603
 604         // Extension has been activated?
 605         if (SQL_AFFECTEDROWS() == 1) {
 606                 // Then run all queries
 607                 EXTENSION_RUN_SQLS(GET_EXT_ID($ext_name), "activate");
 608         } // END - if
 609 }
 610 //
 611 ?>