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                 // Extension was found so we can load it in registration mode
  60                 require($file);
  61
  62                 // And run possible updates
  63                 $EXT_LOAD_MODE = "update"; $EXT_UPDATE_DEPENDS = "";
  64                 foreach ($EXT_VER_HISTORY as $EXT_VER) {
  65                         // Load extension in update mode
  66                         require($file);
  67
  68                         // Do we have an update?
  69                         if (((GET_EXT_VERSION("sql_patches") != "") && ($_CONFIG['verbose_sql'] == "Y")) || (!EXT_IS_ACTIVE("sql_patches"))) {
  70                                 if (!empty($UPDATE_NOTES)) {
  71                                         // Update notes found
  72                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".$UPDATE_NOTES."<br /><br />\n";
  73                                         $UPDATE_NOTES = "";
  74                                 } elseif (($EXT_VER == "0.0") || ($EXT_VER == "0.0.0")) {
  75                                         // Initial release
  76                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".INITIAL_RELEASE."<br /><br />\n";
  77                                 } else {
  78                                         // No update notes found!
  79                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br /><I>".NO_UPDATE_NOTES."</I><br /><br />\n";
  80                                 }
  81                         } // END - if
  82                 } // END - foreach
  83
  84                 // Does this extension depends on an outstanding update of another update?
  85                 if (!empty($EXT_UPDATE_DEPENDS)) {
  86                         // Backup SQL commands and clear current
  87                         $SQLs2 = $SQLs;
  88                         $SQLs  = array();
  89                         $test  = false;
  90
  91                         // Backup language as well
  92                         $LANG_BCK = $EXT_LANG_PREFIX;
  93                         $EXT_ALWAYS_ACTIVE = "N";
  94
  95                         // Load required extension also in update mode
  96                         $file = sprintf("%sinc/extensions/ext-%s.php", PATH, $EXT_UPDATE_DEPENDS);
  97
  98                         // Check for required file
  99                         if (FILE_READABLE($file)) {
 100                                 // File exists so let's load it
 101                                 $VER_BACKUP = $EXT_VERSION;
 102                                 require($file);
 103                                 $EXT_VERSION = $VER_BACKUP;
 104
 105                                 // If versions mismatch update extension first
 106                                 $ext_ver = GET_EXT_VERSION($EXT_UPDATE_DEPENDS);
 107
 108                                 // Extension version set?
 109                                 if (empty($ext_ver)) {
 110                                         // Extension not registered so far so first load task's ID...
 111                                         $result = SQL_QUERY_ESC("SELECT id FROM "._MYSQL_PREFIX."_task_system WHERE task_type='EXTENSION' AND subject LIKE '[%s:]%%' LIMIT 1",
 112                                          array($EXT_UPDATE_DEPENDS), __FILE__, __LINE__);
 113
 114                                         // Entry found?
 115                                         if (SQL_NUMROWS($result) == 1) {
 116                                                 // Task found so load task's ID and register extension...
 117                                                 list($task) = SQL_FETCHROW($result);
 118
 119                                                 // Try to register the extension
 120                                                 $test = EXTENSION_REGISTER($EXT_UPDATE_DEPENDS, $task, $dry_run);
 121                                         } // END - if
 122
 123                                         // Free result
 124                                         SQL_FREERESULT($result);
 125                                 } elseif ($ext_ver != $EXT_VERSION) {
 126                                         // Ok, update this extension now
 127                                         EXTENSION_UPDATE(basename($file), $EXT_UPDATE_DEPENDS, $ext_ver, $dry_run);
 128
 129                                         // All okay!
 130                                         $test = true;
 131                                 } else {
 132                                         // Nothing to register / update before...
 133                                         $test = true;
 134                                 }
 135                         } else {
 136                                 // Required file for update does not exists!
 137                                 $test = true;
 138                                 // But this is fine for the first time...
 139                         }
 140
 141                         // Finally restore previous SQLs
 142                         $SQLs = $SQLs2; unset($SQLs2);
 143                         $EXT_LANG_PREFIX = $LANG_BCK;
 144                 } else {
 145                         // Does not depend on an other extension
 146                         $test = true;
 147                 }
 148
 149                 // Switch back to register mode
 150                 $EXT_LOAD_MODE = "register";
 151
 152                 // Does everthing before wents ok?
 153                 if ($test) {
 154                         // "Dry-run-mode" activated?
 155                         if (!$dry_run) {
 156                                 // Run all SQLs
 157                                 foreach ($SQLs as $sql) {
 158                                         // Trim spaces away which we don't need
 159                                         $sql = trim($sql);
 160
 161                                         // Is there still an SQL query?
 162                                         if (!empty($sql)) {
 163                                                 // Do we have an "ALTER TABLE" command?
 164                                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
 165                                                         // Analyse the alteration command
 166                                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
 167                                                 } else {
 168                                                         // Run regular SQL command
 169                                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 170                                                 }
 171                                         } // END - if
 172                                 } // END - foreach
 173
 174                                 // Remove cache file(s) if extension is active
 175                                 if ((EXT_IS_ACTIVE("cache")) || (GET_EXT_VERSION("cache") != "")) {
 176                                         //* DEBUG: */ echo __LINE__.": DESTROY!<br />\n";
 177                                         // Remove cache files
 178                                         if ($cacheInstance->cache_file("extensions", true)) $cacheInstance->cache_destroy();
 179                                         if ($cacheInstance->cache_file("mod_reg", true))    $cacheInstance->cache_destroy();
 180                                         if ($cacheInstance->cache_file("config", true))     $cacheInstance->cache_destroy();
 181                                 } // END - if
 182
 183                                 // Check for added include files
 184                                 if (count($INC_POOL > 0)) {
 185                                         // Loads every include file
 186                                         foreach ($INC_POOL as $inc) {
 187                                                 require_once($inc);
 188                                         } // END - foreach
 189                                 } // END - if
 190
 191                                 // Register extension
 192                                 $result = SQL_QUERY_ESC("INSERT INTO "._MYSQL_PREFIX."_extensions (ext_name, ext_lang_file, ext_active, ext_version) VALUES ('%s', '%s', '%s', '%s')",
 193                                  array($ext_name, $EXT_LANG_PREFIX, $EXT_ALWAYS_ACTIVE, $EXT_VERSION), __FILE__, __LINE__);
 194
 195                                 // Update task management
 196                                 ADMIN_SOLVE_TASK($id);
 197
 198                                 // @TODO This causes the whole (!) menu cache being purged
 199                                 CACHE_PURGE_ADMIN_MENU();
 200
 201                                 // In normal mode return a true on success
 202                                 $ret = true;
 203
 204                                 // Remove SQLs
 205                                 unset($SQLs);
 206                         } else {
 207                                 // Rewrite SQL command to keep { and } inside
 208                                 foreach ($SQLs as $key => $sql) {
 209                                         $sql = str_replace('{', "&#123;", str_replace('}', "&#125;", $sql));
 210                                         $SQLs[$key] = $sql;
 211                                 } // END - foreach
 212
 213                                 // In  "dry-run" mode return array with all SQL commands
 214                                 $ret = $SQLs;
 215
 216                                 // Remove all SQL commands
 217                                 unset($SQLs);
 218                         }
 219                 } else {
 220                         // No, an error occurs while registering extension :-(
 221                         $ret = false;
 222                 }
 223         } elseif (($id > 0) && (!empty($ext_name))) {
 224                 // Remove task from system when id and extension's name is valid
 225                 $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_task_system WHERE id=%s AND status='NEW' LIMIT 1",
 226                  array(bigintval($id)), __FILE__, __LINE__);
 227         }
 228
 229         // Is this the sql_patches?
 230         //* DEBUG: */ echo __LINE__.":{$ext_name}/{$EXT_LOAD_MODE}<br />\n";
 231         if (($ext_name == "sql_patches") && (($EXT_LOAD_MODE == "register") || ($EXT_LOAD_MODE == "remove")) && (!$dry_run) && ($test)) {
 232                 // Then redirect to logout
 233                 //* DEBUG: */ echo __LINE__.": LOAD!<br />\n";
 234                 LOAD_URL("modules.php?module=admin&logout=1&".$EXT_LOAD_MODE."=sql_patches");
 235         } // END - if
 236
 237         // Return status code
 238         return $ret;
 239 }
 240 //
 241 function EXTENSION_RUN_SQLS($id, $EXT_LOAD_MODE) {
 242         global $cacheInstance;
 243         $SQLs = array();
 244
 245         // By default no SQL has been executed
 246         $sqlRan = false;
 247
 248         // This shall never do a non-admin user!
 249         if (!IS_ADMIN()) return false;
 250
 251         // Get extension's name
 252         $ext_name = GET_EXT_NAME($id);
 253         if (empty($ext_name)) return false;
 254
 255         // Load extension in detected mode
 256         //* DEBUG: */ echo __FUNCTION__.":ext_name[{$id}]={$ext_name}<br />\n";
 257         $file = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
 258         if (FILE_READABLE($file)) {
 259                 // Load the include
 260                 require($file);
 261         } // END - if
 262
 263         //* DEBUG: */ echo __FUNCTION__.":SQLs::count=".count($SQLs)."<br />\n";
 264         if ((is_array($SQLs) && (sizeof($SQLs) > 0))) {
 265                 // Run SQL commands...
 266                 foreach ($SQLs as $sql) {
 267                         // Trim spaces away which we don't need
 268                         $sql = trim($sql);
 269
 270                         // Is there still an SQL query?
 271                         if (!empty($sql)) {
 272                                 // Do we have an "ALTER TABLE" command?
 273                                 //* DEBUG: */ echo __FUNCTION__.":SQL={$SQL}<br />\n";
 274                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
 275                                         // Analyse the alteration command
 276                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
 277                                 } else {
 278                                         // Run regular SQL command
 279                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 280                                 }
 281
 282                                 // An SQL has been executed
 283                                 $sqlRan = true;
 284                         } // END - if
 285                 } // END - foreach
 286
 287                 // Removal mode?
 288                 if ($EXT_LOAD_MODE == "remove") {
 289                         // Delete this extension (remember to remove it from your server *before* you click on welcome!
 290                         $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_extensions WHERE id=%s LIMIT 1",
 291                          array($id), __FILE__, __LINE__);
 292                 } // END - if
 293
 294                 //* DEBUG: */ echo __FUNCTION__.":mode={$EXT_LOAD_MODE}<br />\n";
 295
 296                 // Remove cache file(s) if extension is active
 297                 if (((EXT_IS_ACTIVE("cache")) || (GET_EXT_VERSION("cache") != "")) && (((SQL_AFFECTEDROWS() == 1) && ($EXT_LOAD_MODE == "remove")) || ($sqlRan === true))) {
 298                         //* DEBUG: */ echo __LINE__.": DESTROY!<br />\n";
 299                         // Remove cache files
 300                         if ($cacheInstance->cache_file("extensions", true)) $cacheInstance->cache_destroy();
 301                         if ($cacheInstance->cache_file("mod_reg", true))    $cacheInstance->cache_destroy();
 302                         if ($cacheInstance->cache_file("config", true))     $cacheInstance->cache_destroy();
 303
 304                         // @TODO This causes the whole (!) menu cache being purged
 305                         CACHE_PURGE_ADMIN_MENU();
 306                 } // END - if
 307
 308                 // Is this the sql_patches?
 309                 //* DEBUG: */ echo __LINE__.": {$id}/{$ext_name}/{$EXT_LOAD_MODE}<br />\n";
 310                 if (($ext_name == "sql_patches") && (($EXT_LOAD_MODE == "register") || ($EXT_LOAD_MODE == "remove"))) {
 311                         // Then redirect to logout
 312                         //* DEBUG: */ echo __LINE__.": LOAD!<br />\n";
 313                         LOAD_URL("modules.php?module=admin&logout=1&".$EXT_LOAD_MODE."=sql_patches");
 314                 } // END - if
 315         } // END - if
 316 }
 317 // Check if given extension is active
 318 function EXT_IS_ACTIVE ($ext_name) {
 319         global $cacheArray, $_CONFIG;
 320
 321         // Extensions are all inactive during installation
 322         if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing')) || (empty($ext_name))) return false;
 323
 324         // Not active is the default
 325         $active = "N";
 326
 327         // Check cache
 328         if (!empty($cacheArray['extensions']['ext_active'][$ext_name])) {
 329                 // Load from cache
 330                 //* DEBUG: */ echo "CACHE! ext_name={$ext_name}<br />\n";
 331                 $active = $cacheArray['extensions']['ext_active'][$ext_name];
 332
 333                 // Count cache hits
 334                 if (isset($_CONFIG['cache_hits'])) $_CONFIG['cache_hits']++;
 335         } elseif (($ext_name == "cache") || (GET_EXT_VERSION("cache") == "")) {
 336                 //* DEBUG: */ echo "DB! ext_name={$ext_name}<br />\n";
 337                 // Load from database
 338                 $result = SQL_QUERY_ESC("SELECT ext_active FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 339                  array($ext_name), __FILE__, __LINE__);
 340                 if (SQL_NUMROWS($result) == 0) {
 341                         // Extension was not found!
 342                         return false;
 343                 }
 344                 list($active) = SQL_FETCHROW($result);
 345                 //* DEBUG: */ echo $ext_name."[DB]: {$active}<br />\n";
 346                 SQL_FREERESULT($result);
 347
 348                 // Write cache array
 349                 $cacheArray['extensions']['ext_active'][$ext_name] = $active;
 350         } else {
 351                 // Extension not active!
 352                 //* DEBUG: */ echo $ext_name.": Not active!<br />\n";
 353                 $cacheArray['extensions']['ext_active'][$ext_name] = "N";
 354         }
 355
 356         // Create FQFN for extension file
 357         $inc = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
 358
 359         // Debug message
 360         //DEBUG_LOG(__FUNCTION__.": ext_name={$ext_name},active={$active}");
 361
 362         // Is this extension activated? (For admins we always have active extensions...)
 363         return ($active == "Y");
 364 }
 365 // Get version from extensions
 366 function GET_EXT_VERSION ($ext_name) {
 367         global $cacheArray, $_CONFIG, $cacheInstance;
 368         $ret = false;
 369
 370         // Extensions are all inactive during installation
 371         if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing'))) return "";
 372         //* DEBUG: */ echo __FUNCTION__.": ext_name={$ext_name}<br />\n";
 373
 374         // Is the cache written?
 375         if (!empty($cacheArray['extensions']['ext_version'][$ext_name])) {
 376                 // Load data from cache
 377                 //* DEBUG: */ echo __FUNCTION__.": CACHE!<br />\n";
 378                 $ret = $cacheArray['extensions']['ext_version'][$ext_name];
 379
 380                 // Count cache hits
 381                 if (isset($_CONFIG['cache_hits'])) $_CONFIG['cache_hits']++; else $_CONFIG['cache_hits'] = 1;
 382         } elseif (!is_object($cacheInstance)) {
 383                 // Load from database
 384                 $result = SQL_QUERY_ESC("SELECT ext_version FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 385                  array($ext_name), __FILE__, __LINE__);
 386                 list($ret) = SQL_FETCHROW($result);
 387                 SQL_FREERESULT($result);
 388
 389                 // Set cache
 390                 $cacheArray['extensions']['ext_version'][$ext_name] = $ret;
 391         }
 392
 393         // Return result
 394         //* DEBUG: */ echo __FUNCTION__.": ret={$ret}<br />\n";
 395         return $ret;
 396 }
 397 //
 398 function EXTENSION_UPDATE($file, $ext, $EXT_VER, $dry_run=false)
 399 {
 400         // This shall never do a non-admin user!
 401         global $cacheInstance, $_CONFIG, $NOTES; $SQLs = array();
 402         if ((!IS_ADMIN()) || (empty($ext))) return false;
 403
 404         // Load extension in update mode
 405         $EXT_LOAD_MODE = "update"; $EXT_UPDATE_DEPENDS = ""; $NOTES = "";
 406
 407         // Load extension file
 408         include(sprintf("%sinc/extensions/%s", PATH, $file));
 409
 410         if (!empty($EXT_UPDATE_DEPENDS)) {
 411                 // Update another extension first!
 412                 $test = EXTENSION_UPDATE(("ext-".$EXT_UPDATE_DEPENDS.".php"), $EXT_UPDATE_DEPENDS, GET_EXT_VERSION($EXT_UPDATE_DEPENDS), $dry_run);
 413         }
 414
 415         // Check if version is updated
 416         if ((($EXT_VERSION != $EXT_VER) || ($dry_run)) && (is_array($EXT_VER_HISTORY)))
 417         {
 418                 // Search for starting point
 419                 $start = array_search($EXT_VER, $EXT_VER_HISTORY);
 420                 $NOTES = "";
 421
 422                 // And load SQL queries in order of version history
 423                 for ($idx = ($start + 1); $idx < sizeof($EXT_VER_HISTORY); $idx++)
 424                 {
 425                         // Remove old SQLs array to prevent possible bugs
 426                         if (!$dry_run) { unset($SQLs); $SQLs = array(); }
 427
 428                         // Set version
 429                         $EXT_VER = $EXT_VER_HISTORY[$idx];
 430
 431                         // Include again...
 432                         include(PATH."inc/extensions/".$file);
 433
 434                         // Add notes
 435                         if ($_CONFIG['verbose_sql'] == "Y")
 436                         {
 437                                 $EXT_VER = $EXT_VER_HISTORY[$idx];
 438                                 if (!empty($UPDATE_NOTES))
 439                                 {
 440                                         // Update notes found
 441                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".$UPDATE_NOTES."<br /><br />\n";
 442                                         $UPDATE_NOTES = "";
 443                                 }
 444                                  elseif ($EXT_VER == "0.0")
 445                                 {
 446                                         // Initial release
 447                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".INITIAL_RELEASE."<br /><br />\n";
 448                                 }
 449                                  else
 450                                 {
 451                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br /><I>".NO_UPDATE_NOTES."</I><br /><br />\n";
 452                                 }
 453                         }
 454
 455                         // Run SQLs
 456                         if ((is_array($SQLs)) && (!$dry_run))
 457                         {
 458                                 // Run SQL commands
 459                                 foreach ($SQLs as $sql)
 460                                 {
 461                                         $sql = trim($sql);
 462                                         if (!empty($sql))
 463                                         {
 464                                                 // Do we have an "ALTER TABLE" command?
 465                                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
 466                                                         // Analyse the alteration command
 467                                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
 468                                                 } else {
 469                                                         // Run regular SQL command
 470                                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 471                                                 }
 472                                         }
 473                                 }
 474                         } elseif (GET_EXT_VERSION("sql_patches") == "") {
 475                                 // Remove SQLs if extension is not installed
 476                                 $SQLs = array();
 477                         }
 478                 }
 479
 480                 if (!$dry_run)
 481                 {
 482                         // In normal mode insert task and update extension's version...
 483                         $ext_subj = "[UPDATE-".$ext."-".$EXT_VERSION.":] ".ADMIN_UPDATE_EXT_SUBJ;
 484
 485                         // Create task
 486                         CREATE_EXTENSION_UPDATE_TASK(GET_ADMIN_ID(get_session('admin_login')), $ext_subj, addslashes($NOTES));
 487
 488                         // Update extension's version
 489                         $result = SQL_QUERY_ESC("UPDATE "._MYSQL_PREFIX."_extensions SET ext_version='%s' WHERE ext_name='%s' LIMIT 1",
 490                          array($EXT_VERSION, $ext), __FILE__, __LINE__);
 491
 492                         // Update cache
 493                         if (EXT_IS_ACTIVE("cache")) {
 494                                 if ($cacheInstance->cache_file("extensions", true) == true) $cacheInstance->cache_destroy();
 495                                 if ($cacheInstance->cache_file("config", true) == true)     $cacheInstance->cache_destroy();
 496                                 if ($cacheInstance->cache_file("mod_reg", true) == true)    $cacheInstance->cache_destroy();
 497                         } // END - if
 498
 499                         // Remove array
 500                         unset($SQLs);
 501                 } else {
 502                         // In "dry-run" mode return array with SQL commands
 503                         return $SQLs;
 504                 }
 505         }
 506 }
 507 //
 508 function EXTENSION_VERBOSE_TABLE($SQLs, $title = ADMIN_SQLS_EXECUTED_ON_REMOVAL, $dashed = "", $switch = false, $WIDTH = "480") {
 509         global $_CONFIG;
 510
 511         $S = false; $SW = 2; $i = 1;
 512         $OUT = "";
 513         if ((is_array($SQLs)) && (GET_EXT_VERSION("sql_patches") >= "0.0.7") && ($_CONFIG['verbose_sql'] == "Y")) {
 514                 $OUT  = "<DIV align=\"center\">
 515 <TABLE border=\"0\" cellspacing=\"0\" cellpadding=\"0\" width=\"".$WIDTH."\" align=\"center\"".$dashed.">
 516 <TR>
 517   <TD colspan=\"2\" align=\"center\" class=\"admin_title bottom2\" height=\"24\">
 518     <STRONG>".$title.":</STRONG>
 519   </TD>
 520 </TR>\n";
 521                 foreach ($SQLs as $idx => $sql) {
 522                         $sql = trim($sql);
 523                         if (!empty($sql)) {
 524                                 $S = true;
 525                                 $OUT .= "<TR>
 526   <TD class=\"switch_sw".(3 - $SW)." bottom2\" style=\"padding-left: 2px\" width=\"30\">".$i.".</TD>
 527   <TD class=\"switch_sw".(3 - $SW)." bottom2\" style=\"padding-left: 5px; padding-right: 5px\">
 528     ".$sql."
 529   </TD>
 530 </TR>\n";
 531                                 if ($switch) $SW = 3 - $SW;
 532                                 $i++;
 533                         }
 534                 }
 535         }
 536
 537         if ((!$S) && (GET_EXT_VERSION("sql_patches") >= "0.0.7") && ($_CONFIG['verbose_sql'] == "Y")) {
 538                 // No addional SQL commands to run
 539                 $OUT .= "<TR>
 540   <TD colspan=\"2\" align=\"center\" class=\"switch_sw2 bottom2\" height=\"24\">
 541     <FONT class=\"admin_note\">".ADMIN_NO_ADDIONAL_SQLS."</FONT>
 542   </TD>
 543 </TR>\n";
 544         }
 545
 546         if (!empty($OUT)) {
 547                 // Add missing close-table tag
 548                 $OUT .= "</TABLE>
 549 </DIV>\n";
 550         }
 551
 552         // Return output
 553         return $OUT;
 554 }
 555 // Get extension name from id
 556 function GET_EXT_NAME ($id) {
 557         $ret = "";
 558         global $cacheArray, $_CONFIG;
 559         if (!empty($cacheArray['extensions']['ext_name'][$id])) {
 560                 // Load from cache
 561                 $ret = $cacheArray['extensions']['ext_name'][$id];
 562
 563                 // Count cache hits
 564                 $_CONFIG['cache_hits']++;
 565         } elseif (!EXT_IS_ACTIVE("cache")) {
 566                 // Load from database
 567                 $result = SQL_QUERY_ESC("SELECT ext_name FROM "._MYSQL_PREFIX."_extensions WHERE id=%s LIMIT 1",
 568                  array(bigintval($id)), __FILE__, __LINE__);
 569                 list($ret) = SQL_FETCHROW($result);
 570                 SQL_FREERESULT($result);
 571         }
 572         return $ret;
 573 }
 574 // Get extension id from name
 575 function GET_EXT_ID($name) {
 576         $ret = 0;
 577         global $cacheArray, $_CONFIG;
 578         if (isset($cacheArray['extensions']['ext_id'][$name])) {
 579                 // Load from cache
 580                 $ret = $cacheArray['extensions']['ext_id'][$name];
 581
 582                 // Count cache hits
 583                 $_CONFIG['cache_hits']++;
 584         } elseif (!EXT_IS_ACTIVE("cache")) {
 585                 // Load from database
 586                 $result = SQL_QUERY_ESC("SELECT id FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 587                  array($name), __FILE__, __LINE__);
 588                 list($ret) = SQL_FETCHROW($result);
 589                 SQL_FREERESULT($result);
 590         }
 591
 592         // Return value
 593         return $ret;
 594 }
 595 // Activate given extension
 596 function ACTIVATE_EXTENSION($ext_name) {
 597         // Activate the extension
 598         $result = SQL_QUERY_ESC("UPDATE "._MYSQL_PREFIX."_extensions SET ext_active='Y' WHERE ext_name='%s' LIMIT 1",
 599                 array($ext_name), __FILE__, __LINE__);
 600
 601         // Extension has been activated?
 602         if (SQL_AFFECTEDROWS() == 1) {
 603                 // Then run all queries
 604                 EXTENSION_RUN_SQLS(GET_EXT_ID($ext_name), "activate");
 605         } // END - if
 606 }
 607 // Checks wether the extension is older than given
 608 function EXT_VERSION_IS_OLDER ($ext_name, $ext_ver) {
 609         // Get current extension version
 610         $currVersion = GET_EXT_VERSION($ext_name);
 611
 612         // Remove all dots from both versions
 613         $currVersion = str_replace(".", "", $currVersion);
 614         $ext_ver = str_replace(".", "", $ext_ver);
 615
 616         // Now compare both and return the result
 617         return ($currVersion < $ext_ver);
 618 }
 619 //
 620 ?>