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 (ereg(basename(__FILE__), $_SERVER['PHP_SELF']))
  36 {
  37         $INC = substr(dirname(__FILE__), 0, strpos(dirname(__FILE__), "/inc") + 4) . "/security.php";
  38         require($INC);
  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, $ext_name);
  56
  57         // Does this extension exists?
  58         if (file_exists($file) && is_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, $EXT_UPDATE_DEPENDS);
  99
 100                         // Check for required file
 101                         if (file_exists($file) && is_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                                                 // Run SQL command
 169                                                 $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 170                                         } // END - if
 171                                 } // END - foreach
 172
 173                                 // Remove cache file(s) if extension is active
 174                                 if ((EXT_IS_ACTIVE("cache")) || (GET_EXT_VERSION("cache") != "")) {
 175                                         //* DEBUG: */ echo __LINE__.": DESTROY!<br />\n";
 176                                         // Remove cache files
 177                                         if ($cacheInstance->cache_file("extensions", true)) $cacheInstance->cache_destroy();
 178                                         if ($cacheInstance->cache_file("mod_reg", true))    $cacheInstance->cache_destroy();
 179                                         if ($cacheInstance->cache_file("config", true))     $cacheInstance->cache_destroy();
 180                                 } // END - if
 181
 182                                 // Check for added include files
 183                                 if (count($INC_POOL > 0)) {
 184                                         // Loads every include file
 185                                         foreach ($INC_POOL as $inc) {
 186                                                 require_once($inc);
 187                                         } // END - foreach
 188                                 }
 189
 190                                 // Register extension
 191                                 $result = SQL_QUERY_ESC("INSERT INTO "._MYSQL_PREFIX."_extensions (ext_name, ext_lang_file, ext_active, ext_version) VALUES ('%s', '%s', '%s', '%s')",
 192                                  array($ext_name, $EXT_LANG_PREFIX, $EXT_ALWAYS_ACTIVE, $EXT_VERSION), __FILE__, __LINE__);
 193
 194                                 // Update task management
 195                                 $result = SQL_QUERY_ESC("UPDATE "._MYSQL_PREFIX."_task_system SET status='SOLVED' WHERE id=%d LIMIT 1",
 196                                  array(bigintval($id)), __FILE__, __LINE__);
 197
 198                                 // In normal mode return a true on success
 199                                 $ret = true; unset($SQLs);
 200                         } else {
 201                                 // Rewrite SQL command to keep { and } inside
 202                                 foreach ($SQLs as $key => $sql) {
 203                                         $sql = str_replace('{', "&#123;", str_replace('}', "&#125;", $sql));
 204                                         $SQLs[$key] = $sql;
 205                                 } // END - foreach
 206
 207                                 // In  "dry-run" mode return array with all SQL commands
 208                                 $ret = $SQLs;
 209
 210                                 // Remove all SQL commands
 211                                 unset($SQLs);
 212                         }
 213                 } else {
 214                         // No, an error occurs while registering extension :-(
 215                         $ret = false;
 216                 }
 217         } elseif (($id > 0) && (!empty($ext_name))) {
 218                 // Remove task from system when id and extension's name is valid
 219                 $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_task_system WHERE id=%d AND status='NEW' LIMIT 1",
 220                  array(bigintval($id)), __FILE__, __LINE__);
 221         }
 222
 223         // Is this the sql_patches?
 224         //* DEBUG: */ echo __LINE__.":{$ext_name}/{$EXT_LOAD_MODE}<br />\n";
 225         if (($ext_name == "sql_patches") && (($EXT_LOAD_MODE == "register") || ($EXT_LOAD_MODE == "remove")) && (!$dry_run) && ($test)) {
 226                 // Then redirect to logout
 227                 //* DEBUG: */ echo __LINE__.": LOAD!<br />\n";
 228                 LOAD_URL("modules.php?module=admin&logout=1&".$EXT_LOAD_MODE."=sql_patches");
 229         } // END - if
 230
 231         // Return status code
 232         return $ret;
 233 }
 234 //
 235 function EXTENSION_RUN_SQLS($id, $EXT_LOAD_MODE) {
 236         global $cacheInstance;
 237         $SQLs = array();
 238
 239         // This shall never do a non-admin user!
 240         if (!IS_ADMIN()) return false;
 241
 242         // Get extension's name
 243         $ext_name = GET_EXT_NAME($id);
 244         if (empty($ext_name)) return false;
 245
 246         // Load extension in detected mode
 247         $file = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
 248         if (file_exists($file) && is_readable($file)) require($file);
 249
 250         if ((is_array($SQLs) && (sizeof($SQLs) > 0))) {
 251                 // Run SQL commands...
 252                 foreach ($SQLs as $sql) {
 253                         // Trim spaces away which we don't need
 254                         $sql = trim($sql);
 255
 256                         // Is there still an SQL query?
 257                         if (!empty($sql)) {
 258                                 // Run SQL command
 259                                 $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 260                         } // END - if
 261                 } // END - foreach
 262
 263                 // Removal mode?
 264                 if ($EXT_LOAD_MODE == "remove") {
 265                         // Delete this extension (remember to remove it from your server *before* you click on welcome!
 266                         $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_extensions WHERE id=%d LIMIT 1",
 267                          array($id), __FILE__, __LINE__);
 268                 } // END - if
 269
 270                 // Remove cache file(s) if extension is active
 271                 if ((EXT_IS_ACTIVE("cache")) || (GET_EXT_VERSION("cache") != "")) {
 272                         //* DEBUG: */ echo __LINE__.": DESTROY!<br />\n";
 273                         // Remove cache files
 274                         if ($cacheInstance->cache_file("extensions", true)) $cacheInstance->cache_destroy();
 275                         if ($cacheInstance->cache_file("mod_reg", true))    $cacheInstance->cache_destroy();
 276                         if ($cacheInstance->cache_file("config", true))     $cacheInstance->cache_destroy();
 277                 } // END - if
 278
 279                 // Is this the sql_patches?
 280                 //* DEBUG: */ echo __LINE__.": {$id}/{$ext_name}/{$EXT_LOAD_MODE}<br />\n";
 281                 if (($ext_name == "sql_patches") && (($EXT_LOAD_MODE == "register") || ($EXT_LOAD_MODE == "remove"))) {
 282                         // Then redirect to logout
 283                         //* DEBUG: */ echo __LINE__.": LOAD!<br />\n";
 284                         LOAD_URL("modules.php?module=admin&logout=1&".$EXT_LOAD_MODE."=sql_patches");
 285                 } // END - if
 286         } // END - if
 287 }
 288 // Check if given extension is active
 289 function EXT_IS_ACTIVE ($ext_name, $ignore_admin = false, $ignore_cache = false) {
 290         global $cacheArray, $_CONFIG;
 291
 292         // Extensions are all inactive during installation
 293         if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing')) || (empty($ext_name))) return false;
 294
 295         // Extension's file name will also be checked
 296         $file = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
 297         if ((!file_exists($file)) && (!is_readable($file))) return false;
 298         //* DEBUG: */ echo "*".$ext_name."(".count($cacheArray).")<br />";
 299
 300         // Failed is the default
 301         $ret = false;
 302         if ((!empty($cacheArray['extensions']['ext_active'][$ext_name])) && (!$ignore_cache)) {
 303                 // Load from cache
 304                 //* DEBUG: */ echo "CACHE!<br />\n";
 305                 $active = $cacheArray['extensions']['ext_active'][$ext_name];
 306
 307                 // Count cache hits
 308                 if (isset($_CONFIG['cache_hits'])) $_CONFIG['cache_hits']++;
 309         } else {
 310                 //* DEBUG: */ echo "DB!<br />\n";
 311                 // Load from database
 312                 $result = SQL_QUERY_ESC("SELECT ext_active FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 313                  array($ext_name), __FILE__, __LINE__);
 314                 if (SQL_NUMROWS($result) == 0) {
 315                         // Extension was not found!
 316                         return false;
 317                 }
 318                 list($active) = SQL_FETCHROW($result);
 319                 SQL_FREERESULT($result);
 320
 321                 // Write cache array
 322                 $cacheArray['extensions']['ext_active'][$ext_name] = $active;
 323         }
 324
 325         // Is this extension activated? (For admins we always have active extensions...)
 326         $inc = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
 327         // Shorter way
 328         return (
 329                 (
 330                         ($active == "Y") || (
 331                                 (IS_ADMIN()) &&
 332                                 (!$ignore_admin) &&
 333                                 (!empty($active))
 334                         )
 335                 ) && (
 336                         file_exists($inc)
 337                 ) && (
 338                         is_readable($inc)
 339                 )
 340         );
 341 }
 342 // Get version from extensions
 343 function GET_EXT_VERSION ($ext_name) {
 344         global $cacheArray, $_CONFIG, $cacheInstance;
 345         $ret = false;
 346
 347         // Extensions are all inactive during installation
 348         if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing'))) return "";
 349
 350         // Is the cache written?
 351         if (!empty($cacheArray['extensions']['ext_version'][$ext_name])) {
 352                 // Load data from cache
 353                 $ret = $cacheArray['extensions']['ext_version'][$ext_name];
 354
 355                 // Count cache hits
 356                 if (isset($_CONFIG['cache_hits'])) $_CONFIG['cache_hits']++; else $_CONFIG['cache_hits'] = 1;
 357         } elseif (!is_object($cacheInstance)) {
 358                 // Load from database
 359                 $result = SQL_QUERY_ESC("SELECT ext_version FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 360                  array($ext_name), __FILE__, __LINE__);
 361                 list($ret) = SQL_FETCHROW($result);
 362                 SQL_FREERESULT($result);
 363
 364                 // Set cache
 365                 $cacheArray['extensions']['ext_version'][$ext_name] = $ret;
 366         }
 367         return $ret;
 368 }
 369 //
 370 function EXTENSION_UPDATE($file, $ext, $EXT_VER, $dry_run=false)
 371 {
 372         // This shall never do a non-admin user!
 373         global $cacheInstance, $_CONFIG, $NOTES; $SQLs = array();
 374         if ((!IS_ADMIN()) || (empty($ext))) return false;
 375
 376         // Load extension in update mode
 377         $EXT_LOAD_MODE = "update"; $EXT_UPDATE_DEPENDS = ""; $NOTES = "";
 378         include(PATH."inc/extensions/".$file);
 379         if (!empty($EXT_UPDATE_DEPENDS))
 380         {
 381                 // Update another extension first!
 382                 $test = EXTENSION_UPDATE(("ext-".$EXT_UPDATE_DEPENDS.".php"), $EXT_UPDATE_DEPENDS, GET_EXT_VERSION($EXT_UPDATE_DEPENDS), $dry_run);
 383         }
 384
 385         // Check if version is updated
 386         if ((($EXT_VERSION != $EXT_VER) || ($dry_run)) && (is_array($EXT_VER_HISTORY)))
 387         {
 388                 // Search for starting point
 389                 $start = array_search($EXT_VER, $EXT_VER_HISTORY);
 390                 $NOTES = "";
 391
 392                 // And load SQL queries in order of version history
 393                 for ($idx = ($start + 1); $idx < sizeof($EXT_VER_HISTORY); $idx++)
 394                 {
 395                         // Remove old SQLs array to prevent possible bugs
 396                         if (!$dry_run) { unset($SQLs); $SQLs = array(); }
 397
 398                         // Set version
 399                         $EXT_VER = $EXT_VER_HISTORY[$idx];
 400
 401                         // Include again...
 402                         include(PATH."inc/extensions/".$file);
 403
 404                         // Add notes
 405                         if ($_CONFIG['verbose_sql'] == "Y")
 406                         {
 407                                 $EXT_VER = $EXT_VER_HISTORY[$idx];
 408                                 if (!empty($UPDATE_NOTES))
 409                                 {
 410                                         // Update notes found
 411                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".$UPDATE_NOTES."<br /><br />\n";
 412                                         $UPDATE_NOTES = "";
 413                                 }
 414                                  elseif ($EXT_VER == "0.0")
 415                                 {
 416                                         // Initial release
 417                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".INITIAL_RELEASE."<br /><br />\n";
 418                                 }
 419                                  else
 420                                 {
 421                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br /><I>".NO_UPDATE_NOTES."</I><br /><br />\n";
 422                                 }
 423                         }
 424
 425                         // Run SQLs
 426                         if ((is_array($SQLs)) && (!$dry_run))
 427                         {
 428                                 // Run SQL commands
 429                                 foreach ($SQLs as $sql)
 430                                 {
 431                                         $sql = trim($sql);
 432                                         if (!empty($sql))
 433                                         {
 434                                                 // Run SQL command...
 435                                                 $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 436                                         }
 437                                 }
 438                         } elseif (GET_EXT_VERSION("sql_patches") == "") {
 439                                 // Remove SQLs if extension is not installed
 440                                 $SQLs = array();
 441                         }
 442                 }
 443
 444                 if (!$dry_run)
 445                 {
 446                         // In normal mode insert task and update extension's version...
 447                         $ext_subj = "[UPDATE-".$ext."-".$EXT_VERSION.":] ".ADMIN_UPDATE_EXT_SUBJ;
 448
 449                         // Create task
 450                         $result = SQL_QUERY_ESC("SELECT id FROM "._MYSQL_PREFIX."_task_system WHERE subject='%s' LIMIT 1",
 451                          array($ext_subj), __FILE__, __LINE__);
 452                         if (SQL_NUMROWS($result) == 0)
 453                         {
 454                                 // Task not created so it's a brand-new extension which we need to register and create a task for!
 455                                 $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())",
 456                                  array(GET_ADMIN_ID(SQL_ESCAPE(get_session('admin_login'))), $ext_subj, addslashes($NOTES)), __FILE__, __LINE__);
 457                         }
 458
 459                         // Free memory
 460                         SQL_FREERESULT($result);
 461
 462                         // Update extension's version
 463                         $result = SQL_QUERY_ESC("UPDATE "._MYSQL_PREFIX."_extensions SET ext_version='%s' WHERE ext_name='%s' LIMIT 1",
 464                          array($EXT_VERSION, $ext), __FILE__, __LINE__);
 465
 466                         // Update cache
 467                         if (EXT_IS_ACTIVE("cache"))
 468                         {
 469                                 if ($cacheInstance->cache_file("extensions", true) == true) $cacheInstance->cache_destroy();
 470                                 if ($cacheInstance->cache_file("config", true) == true)     $cacheInstance->cache_destroy();
 471                                 if ($cacheInstance->cache_file("mod_reg", true) == true)    $cacheInstance->cache_destroy();
 472                         }
 473
 474                         // Remove array
 475                         unset($SQLs);
 476                 }
 477                  else
 478                 {
 479                         // In "dry-run" mode return array with SQL commands
 480                         return $SQLs;
 481                 }
 482         }
 483 }
 484 //
 485 function EXTENSION_VERBOSE_TABLE($SQLs, $title=ADMIN_SQLS_EXECUTED_ON_REMOVAL, $dashed="", $switch=false, $WIDTH="480")
 486 {
 487         global $_CONFIG;
 488
 489         $S = false; $SW = 2; $i = 1;
 490         $OUT = "";
 491         if ((is_array($SQLs)) && (GET_EXT_VERSION("sql_patches")) && ($_CONFIG['verbose_sql'] == "Y"))
 492         {
 493                 $OUT  = "<DIV align=\"center\">
 494 <TABLE border=\"0\" cellspacing=\"0\" cellpadding=\"0\" width=\"".$WIDTH."\" align=\"center\"".$dashed.">
 495 <TR>
 496   <TD colspan=\"2\" align=\"center\" class=\"admin_title bottom2\" height=\"24\">
 497     <STRONG>".$title.":</STRONG>
 498   </TD>
 499 </TR>\n";
 500                 foreach ($SQLs as $idx=>$sql)
 501                 {
 502                         $sql = trim($sql);
 503                         if (!empty($sql))
 504                         {
 505                                 $S = true;
 506                                 $OUT .= "<TR>
 507   <TD class=\"switch_sw".(3 - $SW)." bottom2\" style=\"padding-left: 2px\" width=\"30\">".$i.".</TD>
 508   <TD class=\"switch_sw".(3 - $SW)." bottom2\" style=\"padding-left: 5px; padding-right: 5px\">
 509     ".$sql."
 510   </TD>
 511 </TR>\n";
 512                                 if ($switch) $SW = 3 - $SW;
 513                                 $i++;
 514                         }
 515                 }
 516         }
 517
 518         if ((!$S) && (GET_EXT_VERSION("sql_patches")) && ($_CONFIG['verbose_sql'] == "Y"))
 519         {
 520                 // No addional SQL commands to run
 521                 $OUT .= "<TR>
 522   <TD colspan=\"2\" align=\"center\" class=\"switch_sw2 bottom2\" height=\"24\">
 523     <FONT class=\"admin_note\">".ADMIN_NO_ADDIONAL_SQLS."</FONT>
 524   </TD>
 525 </TR>\n";
 526         }
 527
 528         if (!empty($OUT)) {
 529                 // Add missing close-table tag
 530                 $OUT .= "</TABLE>
 531 </DIV>\n";
 532         }
 533         return $OUT;
 534 }
 535 //
 536 function GET_EXT_NAME($id)
 537 {
 538         $ret = "";
 539         global $cacheArray, $_CONFIG;
 540         if (!empty($cacheArray['extensions']['ext_id'][$id]))
 541         {
 542                 // Load from cache
 543                 $ret = $cacheArray['extensions']['ext_id'][$id];
 544
 545                 // Count cache hits
 546                 $_CONFIG['cache_hits']++;
 547         }
 548          else
 549         {
 550                 // Load from database
 551                 $result = SQL_QUERY_ESC("SELECT ext_name FROM "._MYSQL_PREFIX."_extensions WHERE id=%d LIMIT 1",
 552                  array(bigintval($id)), __FILE__, __LINE__);
 553                 list($ret) = SQL_FETCHROW($result);
 554                 SQL_FREERESULT($result);
 555         }
 556         return $ret;
 557 }
 558 //
 559 function GET_EXT_ID($name)
 560 {
 561         $ret = "0";
 562         global $cacheArray, $_CONFIG;
 563         if ((isset($cacheArray['extensions']['ext_id'])) && (is_array($cacheArray['extensions']['ext_id'])))
 564         {
 565                 // Load from cache
 566                 $ret = array_search($name, $cacheArray['extensions']['ext_id']);
 567
 568                 // Count cache hits
 569                 $_CONFIG['cache_hits']++;
 570         }
 571          else
 572         {
 573                 // Load from database
 574                 $result = SQL_QUERY_ESC("SELECT id FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 575                  array($name), __FILE__, __LINE__);
 576                 list($ret) = SQL_FETCHROW($result);
 577                 SQL_FREERESULT($result);
 578         }
 579         return $ret;
 580 }
 581 //
 582 ?>