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($sql)) {
 168                                                 // Do we have an "ALTER TABLE" command?
 169                                                 if (substr(strtolower($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                                 }
 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                                 // In normal mode return a true on success
 204                                 $ret = true; unset($SQLs);
 205                         } else {
 206                                 // Rewrite SQL command to keep { and } inside
 207                                 foreach ($SQLs as $key => $sql) {
 208                                         $sql = str_replace('{', "&#123;", str_replace('}', "&#125;", $sql));
 209                                         $SQLs[$key] = $sql;
 210                                 } // END - foreach
 211
 212                                 // In  "dry-run" mode return array with all SQL commands
 213                                 $ret = $SQLs;
 214
 215                                 // Remove all SQL commands
 216                                 unset($SQLs);
 217                         }
 218                 } else {
 219                         // No, an error occurs while registering extension :-(
 220                         $ret = false;
 221                 }
 222         } elseif (($id > 0) && (!empty($ext_name))) {
 223                 // Remove task from system when id and extension's name is valid
 224                 $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_task_system WHERE id=%s AND status='NEW' LIMIT 1",
 225                  array(bigintval($id)), __FILE__, __LINE__);
 226         }
 227
 228         // Is this the sql_patches?
 229         //* DEBUG: */ echo __LINE__.":{$ext_name}/{$EXT_LOAD_MODE}<br />\n";
 230         if (($ext_name == "sql_patches") && (($EXT_LOAD_MODE == "register") || ($EXT_LOAD_MODE == "remove")) && (!$dry_run) && ($test)) {
 231                 // Then redirect to logout
 232                 //* DEBUG: */ echo __LINE__.": LOAD!<br />\n";
 233                 LOAD_URL("modules.php?module=admin&logout=1&".$EXT_LOAD_MODE."=sql_patches");
 234         } // END - if
 235
 236         // Return status code
 237         return $ret;
 238 }
 239 //
 240 function EXTENSION_RUN_SQLS($id, $EXT_LOAD_MODE) {
 241         global $cacheInstance;
 242         $SQLs = array();
 243
 244         // This shall never do a non-admin user!
 245         if (!IS_ADMIN()) return false;
 246
 247         // Get extension's name
 248         $ext_name = GET_EXT_NAME($id);
 249         if (empty($ext_name)) return false;
 250
 251         // Load extension in detected mode
 252         $file = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
 253         if (file_exists($file) && is_readable($file)) require($file);
 254
 255         if ((is_array($SQLs) && (sizeof($SQLs) > 0))) {
 256                 // Run SQL commands...
 257                 foreach ($SQLs as $sql) {
 258                         // Trim spaces away which we don't need
 259                         $sql = trim($sql);
 260
 261                         // Is there still an SQL query?
 262                         if (!empty($sql)) {
 263                                 // Do we have an "ALTER TABLE" command?
 264                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
 265                                         // Analyse the alteration command
 266                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
 267                                 } else {
 268                                         // Run regular SQL command
 269                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 270                                 }
 271                         } // END - if
 272                 } // END - foreach
 273
 274                 // Removal mode?
 275                 if ($EXT_LOAD_MODE == "remove") {
 276                         // Delete this extension (remember to remove it from your server *before* you click on welcome!
 277                         $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_extensions WHERE id=%s LIMIT 1",
 278                          array($id), __FILE__, __LINE__);
 279                 } // END - if
 280
 281                 // Remove cache file(s) if extension is active
 282                 if ((EXT_IS_ACTIVE("cache")) || (GET_EXT_VERSION("cache") != "")) {
 283                         //* DEBUG: */ echo __LINE__.": DESTROY!<br />\n";
 284                         // Remove cache files
 285                         if ($cacheInstance->cache_file("extensions", true)) $cacheInstance->cache_destroy();
 286                         if ($cacheInstance->cache_file("mod_reg", true))    $cacheInstance->cache_destroy();
 287                         if ($cacheInstance->cache_file("config", true))     $cacheInstance->cache_destroy();
 288                 } // END - if
 289
 290                 // Is this the sql_patches?
 291                 //* DEBUG: */ echo __LINE__.": {$id}/{$ext_name}/{$EXT_LOAD_MODE}<br />\n";
 292                 if (($ext_name == "sql_patches") && (($EXT_LOAD_MODE == "register") || ($EXT_LOAD_MODE == "remove"))) {
 293                         // Then redirect to logout
 294                         //* DEBUG: */ echo __LINE__.": LOAD!<br />\n";
 295                         LOAD_URL("modules.php?module=admin&logout=1&".$EXT_LOAD_MODE."=sql_patches");
 296                 } // END - if
 297         } // END - if
 298 }
 299 // Check if given extension is active
 300 function EXT_IS_ACTIVE ($ext_name, $ignore_admin = false, $ignore_cache = false) {
 301         global $cacheArray, $_CONFIG;
 302
 303         // Extensions are all inactive during installation
 304         if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing')) || (empty($ext_name))) return false;
 305
 306         // Extension's file name will also be checked
 307         $file = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
 308         if ((!file_exists($file)) && (!is_readable($file))) return false;
 309         //* DEBUG: */ echo "*".$ext_name."(".count($cacheArray).")<br />";
 310
 311         // Failed is the default
 312         $ret = false;
 313         if ((!empty($cacheArray['extensions']['ext_active'][$ext_name])) && (!$ignore_cache)) {
 314                 // Load from cache
 315                 //* DEBUG: */ echo "CACHE!<br />\n";
 316                 $active = $cacheArray['extensions']['ext_active'][$ext_name];
 317
 318                 // Count cache hits
 319                 if (isset($_CONFIG['cache_hits'])) $_CONFIG['cache_hits']++;
 320         } else {
 321                 //* DEBUG: */ echo "DB!<br />\n";
 322                 // Load from database
 323                 $result = SQL_QUERY_ESC("SELECT ext_active FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 324                  array($ext_name), __FILE__, __LINE__);
 325                 if (SQL_NUMROWS($result) == 0) {
 326                         // Extension was not found!
 327                         return false;
 328                 }
 329                 list($active) = SQL_FETCHROW($result);
 330                 SQL_FREERESULT($result);
 331
 332                 // Write cache array
 333                 $cacheArray['extensions']['ext_active'][$ext_name] = $active;
 334         }
 335
 336         // Is this extension activated? (For admins we always have active extensions...)
 337         $inc = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
 338         // Shorter way
 339         return (
 340                 (
 341                         ($active == "Y") || (
 342                                 (IS_ADMIN()) &&
 343                                 (!$ignore_admin) &&
 344                                 (!empty($active))
 345                         )
 346                 ) && (
 347                         file_exists($inc)
 348                 ) && (
 349                         is_readable($inc)
 350                 )
 351         );
 352 }
 353 // Get version from extensions
 354 function GET_EXT_VERSION ($ext_name) {
 355         global $cacheArray, $_CONFIG, $cacheInstance;
 356         $ret = false;
 357
 358         // Extensions are all inactive during installation
 359         if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing'))) return "";
 360
 361         // Is the cache written?
 362         if (!empty($cacheArray['extensions']['ext_version'][$ext_name])) {
 363                 // Load data from cache
 364                 $ret = $cacheArray['extensions']['ext_version'][$ext_name];
 365
 366                 // Count cache hits
 367                 if (isset($_CONFIG['cache_hits'])) $_CONFIG['cache_hits']++; else $_CONFIG['cache_hits'] = 1;
 368         } elseif (!is_object($cacheInstance)) {
 369                 // Load from database
 370                 $result = SQL_QUERY_ESC("SELECT ext_version FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 371                  array($ext_name), __FILE__, __LINE__);
 372                 list($ret) = SQL_FETCHROW($result);
 373                 SQL_FREERESULT($result);
 374
 375                 // Set cache
 376                 $cacheArray['extensions']['ext_version'][$ext_name] = $ret;
 377         }
 378         return $ret;
 379 }
 380 //
 381 function EXTENSION_UPDATE($file, $ext, $EXT_VER, $dry_run=false)
 382 {
 383         // This shall never do a non-admin user!
 384         global $cacheInstance, $_CONFIG, $NOTES; $SQLs = array();
 385         if ((!IS_ADMIN()) || (empty($ext))) return false;
 386
 387         // Load extension in update mode
 388         $EXT_LOAD_MODE = "update"; $EXT_UPDATE_DEPENDS = ""; $NOTES = "";
 389         include(PATH."inc/extensions/".$file);
 390         if (!empty($EXT_UPDATE_DEPENDS))
 391         {
 392                 // Update another extension first!
 393                 $test = EXTENSION_UPDATE(("ext-".$EXT_UPDATE_DEPENDS.".php"), $EXT_UPDATE_DEPENDS, GET_EXT_VERSION($EXT_UPDATE_DEPENDS), $dry_run);
 394         }
 395
 396         // Check if version is updated
 397         if ((($EXT_VERSION != $EXT_VER) || ($dry_run)) && (is_array($EXT_VER_HISTORY)))
 398         {
 399                 // Search for starting point
 400                 $start = array_search($EXT_VER, $EXT_VER_HISTORY);
 401                 $NOTES = "";
 402
 403                 // And load SQL queries in order of version history
 404                 for ($idx = ($start + 1); $idx < sizeof($EXT_VER_HISTORY); $idx++)
 405                 {
 406                         // Remove old SQLs array to prevent possible bugs
 407                         if (!$dry_run) { unset($SQLs); $SQLs = array(); }
 408
 409                         // Set version
 410                         $EXT_VER = $EXT_VER_HISTORY[$idx];
 411
 412                         // Include again...
 413                         include(PATH."inc/extensions/".$file);
 414
 415                         // Add notes
 416                         if ($_CONFIG['verbose_sql'] == "Y")
 417                         {
 418                                 $EXT_VER = $EXT_VER_HISTORY[$idx];
 419                                 if (!empty($UPDATE_NOTES))
 420                                 {
 421                                         // Update notes found
 422                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".$UPDATE_NOTES."<br /><br />\n";
 423                                         $UPDATE_NOTES = "";
 424                                 }
 425                                  elseif ($EXT_VER == "0.0")
 426                                 {
 427                                         // Initial release
 428                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".INITIAL_RELEASE."<br /><br />\n";
 429                                 }
 430                                  else
 431                                 {
 432                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br /><I>".NO_UPDATE_NOTES."</I><br /><br />\n";
 433                                 }
 434                         }
 435
 436                         // Run SQLs
 437                         if ((is_array($SQLs)) && (!$dry_run))
 438                         {
 439                                 // Run SQL commands
 440                                 foreach ($SQLs as $sql)
 441                                 {
 442                                         $sql = trim($sql);
 443                                         if (!empty($sql))
 444                                         {
 445                                                 // Do we have an "ALTER TABLE" command?
 446                                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
 447                                                         // Analyse the alteration command
 448                                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
 449                                                 } else {
 450                                                         // Run regular SQL command
 451                                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 452                                                 }
 453                                         }
 454                                 }
 455                         } elseif (GET_EXT_VERSION("sql_patches") == "") {
 456                                 // Remove SQLs if extension is not installed
 457                                 $SQLs = array();
 458                         }
 459                 }
 460
 461                 if (!$dry_run)
 462                 {
 463                         // In normal mode insert task and update extension's version...
 464                         $ext_subj = "[UPDATE-".$ext."-".$EXT_VERSION.":] ".ADMIN_UPDATE_EXT_SUBJ;
 465
 466                         // Create task
 467                         $result = SQL_QUERY_ESC("SELECT id FROM "._MYSQL_PREFIX."_task_system WHERE subject='%s' LIMIT 1",
 468                          array($ext_subj), __FILE__, __LINE__);
 469                         if (SQL_NUMROWS($result) == 0) {
 470                                 // Task not created so it's a brand-new extension which we need to register and create a task for!
 471                                 $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())",
 472                                  array(GET_ADMIN_ID(get_session('admin_login')), $ext_subj, addslashes($NOTES)), __FILE__, __LINE__);
 473                         }
 474
 475                         // Free memory
 476                         SQL_FREERESULT($result);
 477
 478                         // Update extension's version
 479                         $result = SQL_QUERY_ESC("UPDATE "._MYSQL_PREFIX."_extensions SET ext_version='%s' WHERE ext_name='%s' LIMIT 1",
 480                          array($EXT_VERSION, $ext), __FILE__, __LINE__);
 481
 482                         // Update cache
 483                         if (EXT_IS_ACTIVE("cache")) {
 484                                 if ($cacheInstance->cache_file("extensions", true) == true) $cacheInstance->cache_destroy();
 485                                 if ($cacheInstance->cache_file("config", true) == true)     $cacheInstance->cache_destroy();
 486                                 if ($cacheInstance->cache_file("mod_reg", true) == true)    $cacheInstance->cache_destroy();
 487                         } // END - if
 488
 489                         // Remove array
 490                         unset($SQLs);
 491                 } else {
 492                         // In "dry-run" mode return array with SQL commands
 493                         return $SQLs;
 494                 }
 495         }
 496 }
 497 //
 498 function EXTENSION_VERBOSE_TABLE($SQLs, $title = ADMIN_SQLS_EXECUTED_ON_REMOVAL, $dashed = "", $switch = false, $WIDTH = "480") {
 499         global $_CONFIG;
 500
 501         $S = false; $SW = 2; $i = 1;
 502         $OUT = "";
 503         if ((is_array($SQLs)) && (GET_EXT_VERSION("sql_patches")) && ($_CONFIG['verbose_sql'] == "Y")) {
 504                 $OUT  = "<DIV align=\"center\">
 505 <TABLE border=\"0\" cellspacing=\"0\" cellpadding=\"0\" width=\"".$WIDTH."\" align=\"center\"".$dashed.">
 506 <TR>
 507   <TD colspan=\"2\" align=\"center\" class=\"admin_title bottom2\" height=\"24\">
 508     <STRONG>".$title.":</STRONG>
 509   </TD>
 510 </TR>\n";
 511                 foreach ($SQLs as $idx => $sql) {
 512                         $sql = trim($sql);
 513                         if (!empty($sql)) {
 514                                 $S = true;
 515                                 $OUT .= "<TR>
 516   <TD class=\"switch_sw".(3 - $SW)." bottom2\" style=\"padding-left: 2px\" width=\"30\">".$i.".</TD>
 517   <TD class=\"switch_sw".(3 - $SW)." bottom2\" style=\"padding-left: 5px; padding-right: 5px\">
 518     ".$sql."
 519   </TD>
 520 </TR>\n";
 521                                 if ($switch) $SW = 3 - $SW;
 522                                 $i++;
 523                         }
 524                 }
 525         }
 526
 527         if ((!$S) && (GET_EXT_VERSION("sql_patches")) && ($_CONFIG['verbose_sql'] == "Y")) {
 528                 // No addional SQL commands to run
 529                 $OUT .= "<TR>
 530   <TD colspan=\"2\" align=\"center\" class=\"switch_sw2 bottom2\" height=\"24\">
 531     <FONT class=\"admin_note\">".ADMIN_NO_ADDIONAL_SQLS."</FONT>
 532   </TD>
 533 </TR>\n";
 534         }
 535
 536         if (!empty($OUT)) {
 537                 // Add missing close-table tag
 538                 $OUT .= "</TABLE>
 539 </DIV>\n";
 540         }
 541
 542         // Return output
 543         return $OUT;
 544 }
 545 // Get extension name from id
 546 function GET_EXT_NAME ($id) {
 547         $ret = "";
 548         global $cacheArray, $_CONFIG;
 549         if (!empty($cacheArray['extensions']['ext_name'][$id])) {
 550                 // Load from cache
 551                 $ret = $cacheArray['extensions']['ext_name'][$id];
 552
 553                 // Count cache hits
 554                 $_CONFIG['cache_hits']++;
 555         } elseif (!EXT_IS_ACTIVE("cache")) {
 556                 // Load from database
 557                 $result = SQL_QUERY_ESC("SELECT ext_name FROM "._MYSQL_PREFIX."_extensions WHERE id=%s LIMIT 1",
 558                  array(bigintval($id)), __FILE__, __LINE__);
 559                 list($ret) = SQL_FETCHROW($result);
 560                 SQL_FREERESULT($result);
 561         }
 562         return $ret;
 563 }
 564 // Get extension id from name
 565 function GET_EXT_ID($name) {
 566         $ret = 0;
 567         global $cacheArray, $_CONFIG;
 568         if (isset($cacheArray['extensions']['ext_id'][$name])) {
 569                 // Load from cache
 570                 $ret = $cacheArray['extensions']['ext_id'][$name];
 571
 572                 // Count cache hits
 573                 $_CONFIG['cache_hits']++;
 574         } elseif (!EXT_IS_ACTIVE("cache")) {
 575                 // Load from database
 576                 $result = SQL_QUERY_ESC("SELECT id FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 577                  array($name), __FILE__, __LINE__);
 578                 list($ret) = SQL_FETCHROW($result);
 579                 SQL_FREERESULT($result);
 580         }
 581
 582         // Return value
 583         return $ret;
 584 }
 585 //
 586 ?>