inc/extensions.php

   1 <?php
   2 /************************************************************************
   3  * MXChange v0.2.1                                    Start: 03/25/2004 *
   4  * ===============                              Last change: 09/29/2004 *
   5  *                                                                      *
   6  * -------------------------------------------------------------------- *
   7  * File              : extensions.php                                   *
   8  * -------------------------------------------------------------------- *
   9  * Short description : Extension management                             *
  10  * -------------------------------------------------------------------- *
  11  * Kurzbeschreibung  : Erweiterungen-Management                         *
  12  * -------------------------------------------------------------------- *
  13  *                                                                      *
  14  * -------------------------------------------------------------------- *
  15  * Copyright (c) 2003 - 2008 by Roland Haeder                           *
  16  * For more information visit: http://www.mxchange.org                  *
  17  *                                                                      *
  18  * This program is free software; you can redistribute it and/or modify *
  19  * it under the terms of the GNU General Public License as published by *
  20  * the Free Software Foundation; either version 2 of the License, or    *
  21  * (at your option) any later version.                                  *
  22  *                                                                      *
  23  * This program is distributed in the hope that it will be useful,      *
  24  * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
  25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
  26  * GNU General Public License for more details.                         *
  27  *                                                                      *
  28  * You should have received a copy of the GNU General Public License    *
  29  * along with this program; if not, write to the Free Software          *
  30  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,               *
  31  * MA  02110-1301  USA                                                  *
  32  ************************************************************************/
  33
  34 // Some security stuff...
  35 if (!defined('__SECURITY')) {
  36         $INC = substr(dirname(__FILE__), 0, strpos(dirname(__FILE__), "/inc") + 4) . "/security.php";
  37         require($INC);
  38 }
  39
  40 // Load the extension and maybe found language and function files
  41 function LOAD_EXTENSION ($ext_name) {
  42         global $EXT_LOADED, $_CONFIG, $CSS, $cacheMode;
  43
  44         // Is the extension already loaded?
  45         //* DEBUG: */ echo "Loading extension {$ext_name}.<br />\n";
  46         if (isset($EXT_LOADED[$ext_name])) {
  47                 // Debug message
  48                 DEBUG_LOG(__FUNCTION__, __LINE__, sprintf("Extension %s already loaded.", $ext_name));
  49                 return false;
  50         }
  51
  52         // Construct FQFN for extension file
  53         $extInclude = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
  54
  55         // Is the extension file NOT there?
  56         if (!FILE_READABLE($extInclude)) {
  57                 // Debug message
  58                 DEBUG_LOG(__FUNCTION__, __LINE__, sprintf("Extension %s not found.", $ext_name));
  59
  60                 // Abort here
  61                 return false;
  62         } // END - if
  63
  64         // Construct FQFN for language file
  65         $langInclude = sprintf("%sinc/language/%s_%s.php", PATH, $ext_name, GET_LANGUAGE());
  66
  67         // Is this include there?
  68         if (FILE_READABLE($langInclude)) {
  69                 // Then load it
  70                 //* DEBUG: */ echo "--- Language loaded.<br />\n";
  71                 require($langInclude);
  72         } // END - if
  73
  74         // Construct FQFN for functions file
  75         $funcsInclude = sprintf("%sinc/libs/%s_functions.php", PATH, $ext_name);
  76
  77         // Is this include there?
  78         if (FILE_READABLE($funcsInclude)) {
  79                 // Then load it
  80                 //* DEBUG: */ echo "--- Functions loaded.<br />\n";
  81                 require($funcsInclude);
  82         } // END - if
  83
  84         // Set extension load mode to nothing (default)
  85         $EXT_LOAD_MODE = "";
  86
  87         // Include the extension file
  88         //* DEBUG: */ echo "Extension loaded.<br />\n";
  89         require($extInclude);
  90
  91         // Mark it as loaded
  92         $EXT_LOADED[$ext_name] = true;
  93
  94         // All fine!
  95         return true;
  96 }
  97
  98 //
  99 function EXTENSION_REGISTER ($ext_name, $id, $dry_run=false) {
 100         global $NOTES, $_CONFIG, $INC_POOL, $cacheInstance;
 101
 102         // This shall never do a non-admin user!
 103         if (!IS_ADMIN()) return false;
 104
 105         // Is this extension already installed?
 106         if (EXT_IS_ACTIVE($ext_name)) return false;
 107
 108         // We want to register an extension and registration status is by default "failed" (= false)
 109         $EXT_LOAD_MODE = "register"; $ret = false; $SQLs = array();
 110         $INC_POOL = array();
 111
 112         // By default the language prefix is the extension's name
 113         // @TODO: Do we really need this one anymore? Can't we just take $ext_name and done?
 114         // By default we have no failtures
 115         $EXT_REPORTS_FAILURE = false;
 116
 117         // Generate file name
 118         $file = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
 119
 120         // Does this extension exists?
 121         if (FILE_READABLE($file)) {
 122                 // Extension was found so we can load it in registration mode
 123                 $EXT_ALWAYS_ACTIVE = "N";
 124                 require($file);
 125
 126                 // And run possible updates
 127                 $EXT_LOAD_MODE = "update"; $EXT_UPDATE_DEPENDS = "";
 128                 foreach ($EXT_VER_HISTORY as $EXT_VER) {
 129                         // Load extension in update mode
 130                         require($file);
 131
 132                         // Do we have an update?
 133                         if (((GET_EXT_VERSION("sql_patches") != "") && ($_CONFIG['verbose_sql'] == "Y")) || (!EXT_IS_ACTIVE("sql_patches"))) {
 134                                 if (!empty($UPDATE_NOTES)) {
 135                                         // Update notes found
 136                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".$UPDATE_NOTES."<br /><br />\n";
 137                                         $UPDATE_NOTES = "";
 138                                 } elseif (($EXT_VER == "0.0") || ($EXT_VER == "0.0.0")) {
 139                                         // Initial release
 140                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".INITIAL_RELEASE."<br /><br />\n";
 141                                 } else {
 142                                         // No update notes found!
 143                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br /><I>".NO_UPDATE_NOTES."</I><br /><br />\n";
 144                                 }
 145                         } // END - if
 146                 } // END - foreach
 147
 148                 // Does this extension depends on an outstanding update of another update?
 149                 if (!empty($EXT_UPDATE_DEPENDS)) {
 150                         // Backup SQL commands and clear current
 151                         $SQLs2 = $SQLs;
 152                         $SQLs  = array();
 153                         $test  = false;
 154
 155                         // Load required extension also in update mode
 156                         $file = sprintf("%sinc/extensions/ext-%s.php", PATH, $EXT_UPDATE_DEPENDS);
 157
 158                         // Check for required file
 159                         if (FILE_READABLE($file)) {
 160                                 // Bacup version number
 161                                 $VER_BACKUP = $EXT_VERSION;
 162
 163                                 // Save the Parrent $EXT_ALWAYS_ACTIVE for later!
 164                                 $EXT_ALWAYS_ACTIVE_PARRENT = $EXT_ALWAYS_ACTIVE;
 165
 166                                 // Set EXT_ALWAYS_ACTIVE for update
 167                                 $EXT_ALWAYS_ACTIVE = "N";
 168
 169                                 // File exists so let's load it
 170                                 require($file);
 171
 172                                 // If versions mismatch update extension first
 173                                 $ext_ver = GET_EXT_VERSION($EXT_UPDATE_DEPENDS);
 174
 175                                 // Extension version set? If empty the extension is not registered
 176                                 if (empty($ext_ver)) {
 177                                         // Extension not registered so far so first load task's ID...
 178                                         $result = SQL_QUERY_ESC("SELECT id FROM "._MYSQL_PREFIX."_task_system WHERE task_type='EXTENSION' AND subject LIKE '[%s:]%%' LIMIT 1",
 179                                          array($EXT_UPDATE_DEPENDS), __FILE__, __LINE__);
 180
 181                                         // Entry found?
 182                                         if (SQL_NUMROWS($result) == 1) {
 183                                                 // Task found so load task's ID and register extension...
 184                                                 list($task) = SQL_FETCHROW($result);
 185
 186                                                 // Try to register the extension
 187                                                 $test = EXTENSION_REGISTER($EXT_UPDATE_DEPENDS, $task, $dry_run);
 188                                         } // END - if
 189
 190                                         // Free result
 191                                         SQL_FREERESULT($result);
 192                                 } elseif ($ext_ver != $EXT_VERSION) {
 193                                         // Ok, update this extension now
 194                                         EXTENSION_UPDATE(basename($file), $EXT_UPDATE_DEPENDS, $ext_ver, $dry_run);
 195
 196                                         // All okay!
 197                                         $test = true;
 198                                 } else {
 199                                         // Nothing to register / update before...
 200                                         $test = true;
 201                                 }
 202
 203                                 // Restore version number
 204                                 $EXT_VERSION = $VER_BACKUP;
 205
 206                                 // Restore $EXT_ALWAYS_ACTIVE with the value from parrent
 207                                 $EXT_ALWAYS_ACTIVE = $EXT_ALWAYS_ACTIVE_PARRENT;
 208                         } else {
 209                                 // Required file for update does not exists!
 210                                 $test = true;
 211                                 // But this is fine for the first time...
 212                         }
 213
 214                         // Finally restore previous SQLs
 215                         $SQLs = $SQLs2; unset($SQLs2);
 216                 } else {
 217                         // Does not depend on an other extension
 218                         $test = true;
 219                 }
 220
 221                 // Switch back to register mode
 222                 $EXT_LOAD_MODE = "register";
 223
 224                 // Remains true if extension registration reports no failtures
 225                 $test = ($test && !$EXT_REPORTS_FAILURE);
 226
 227                 // Does everthing before wents ok?
 228                 if ($test) {
 229                         // "Dry-run-mode" activated?
 230                         if (!$dry_run) {
 231                                 // Run all SQLs
 232                                 foreach ($SQLs as $sql) {
 233                                         // Trim spaces away which we don't need
 234                                         $sql = trim($sql);
 235
 236                                         // Is there still an SQL query?
 237                                         if (!empty($sql)) {
 238                                                 // Do we have an "ALTER TABLE" command?
 239                                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
 240                                                         // Analyse the alteration command
 241                                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
 242                                                 } else {
 243                                                         // Run regular SQL command
 244                                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 245                                                 }
 246                                         } // END - if
 247                                 } // END - foreach
 248
 249                                 // Remove cache file(s) if extension is active
 250                                 if ((EXT_IS_ACTIVE("cache")) || (GET_EXT_VERSION("cache") != "")) {
 251                                         //* DEBUG: */ echo __LINE__.": DESTROY!<br />\n";
 252                                         // Remove cache files
 253                                         if ($cacheInstance->loadCacheFile("extensions", true)) $cacheInstance->destroyCacheFile();
 254                                         if ($cacheInstance->loadCacheFile("mod_reg"))          $cacheInstance->destroyCacheFile();
 255                                         if ($cacheInstance->loadCacheFile("config"))           $cacheInstance->destroyCacheFile();
 256                                 } // END - if
 257
 258                                 // Check for added include files
 259                                 if (count($INC_POOL > 0)) {
 260                                         // Loads every include file
 261                                         foreach ($INC_POOL as $inc) {
 262                                                 require_once($inc);
 263                                         } // END - foreach
 264
 265                                         // Remove array
 266                                         unset($INC_POOL);
 267                                 } // END - if
 268
 269                                 // Register extension
 270                                 $result = SQL_QUERY_ESC("INSERT INTO "._MYSQL_PREFIX."_extensions (ext_name, ext_active, ext_version) VALUES ('%s','%s','%s','%s')",
 271                                  array($ext_name, $EXT_ALWAYS_ACTIVE, $EXT_VERSION), __FILE__, __LINE__);
 272
 273                                 // Update task management
 274                                 ADMIN_SOLVE_TASK($id);
 275
 276                                 // @TODO This causes the whole (!) menu cache being purged
 277                                 CACHE_PURGE_ADMIN_MENU();
 278
 279                                 // In normal mode return a true on success
 280                                 $ret = true;
 281
 282                                 // Remove SQLs
 283                                 unset($SQLs);
 284                         } else {
 285                                 // Rewrite SQL command to keep { and } inside
 286                                 foreach ($SQLs as $key => $sql) {
 287                                         $sql = str_replace('{', "&#123;", str_replace('}', "&#125;", $sql));
 288                                         $SQLs[$key] = $sql;
 289                                 } // END - foreach
 290
 291                                 // In  "dry-run" mode return array with all SQL commands
 292                                 $ret = $SQLs;
 293
 294                                 // Remove all SQL commands
 295                                 unset($SQLs);
 296                         }
 297                 } else {
 298                         // No, an error occurs while registering extension :-(
 299                         $ret = false;
 300                 }
 301         } elseif (($id > 0) && (!empty($ext_name))) {
 302                 // Remove task from system when id and extension's name is valid
 303                 $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_task_system WHERE id=%s AND status='NEW' LIMIT 1",
 304                  array(bigintval($id)), __FILE__, __LINE__);
 305         }
 306
 307         // Is this the sql_patches?
 308         //* DEBUG: */ echo __LINE__.":{$ext_name}/{$EXT_LOAD_MODE}<br />\n";
 309         if (($ext_name == "sql_patches") && (($EXT_LOAD_MODE == "register") || ($EXT_LOAD_MODE == "remove")) && (!$dry_run) && ($test)) {
 310                 // Then redirect to logout
 311                 //* DEBUG: */ echo __LINE__.": LOAD!<br />\n";
 312                 LOAD_URL("modules.php?module=admin&logout=1&".$EXT_LOAD_MODE."=sql_patches");
 313         } // END - if
 314
 315         // Return status code
 316         return $ret;
 317 }
 318 //
 319 function EXTENSION_RUN_SQLS($id, $EXT_LOAD_MODE) {
 320         global $cacheInstance, $_CONFIG;
 321         $SQLs = array();
 322
 323         // Extensions are never active by default
 324         $EXT_ALWAYS_ACTIVE = "N";
 325
 326         // By default no SQL has been executed
 327         $sqlRan = false;
 328
 329         // This shall never do a non-admin user!
 330         if (!IS_ADMIN()) return false;
 331
 332         // Get extension's name
 333         $ext_name = GET_EXT_NAME($id);
 334         if (empty($ext_name)) return false;
 335
 336         // Load extension in detected mode
 337         //* DEBUG: */ print __FUNCTION__."(<font color=\"#0000aa\">".__LINE__."</font>):ext_name[{$id}]={$ext_name}<br />\n";
 338         $file = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
 339         if (FILE_READABLE($file)) {
 340                 // Load the include
 341                 require($file);
 342         } // END - if
 343
 344         //* DEBUG: */ print __FUNCTION__."(<font color=\"#0000aa\">".__LINE__."</font>):SQLs::count=".count($SQLs)."<br />\n";
 345         if ((is_array($SQLs) && (sizeof($SQLs) > 0))) {
 346                 // Run SQL commands...
 347                 foreach ($SQLs as $sql) {
 348                         // Trim spaces away which we don't need
 349                         $sql = trim($sql);
 350
 351                         // Is there still an SQL query?
 352                         if (!empty($sql)) {
 353                                 // Do we have an "ALTER TABLE" command?
 354                                 //* DEBUG: */ print __FUNCTION__."(<font color=\"#0000aa\">".__LINE__."</font>):SQL={$SQL}<br />\n";
 355                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
 356                                         // Analyse the alteration command
 357                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
 358                                 } else {
 359                                         // Run regular SQL command
 360                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 361                                 }
 362
 363                                 // An SQL has been executed
 364                                 $sqlRan = true;
 365                         } // END - if
 366                 } // END - foreach
 367
 368                 // Removal mode?
 369                 if ($EXT_LOAD_MODE == "remove") {
 370                         // Delete this extension (remember to remove it from your server *before* you click on welcome!
 371                         $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_extensions WHERE id=%s LIMIT 1",
 372                          array($id), __FILE__, __LINE__);
 373                 } // END - if
 374
 375                 //* DEBUG: */ print __FUNCTION__."(<font color=\"#0000aa\">".__LINE__."</font>):mode={$EXT_LOAD_MODE}<br />\n";
 376
 377                 // Is this the sql_patches?
 378                 //* DEBUG: */ echo __LINE__.": {$id}/{$ext_name}/{$EXT_LOAD_MODE}<br />\n";
 379                 if (($ext_name == "sql_patches") && (($EXT_LOAD_MODE == "register") || ($EXT_LOAD_MODE == "remove"))) {
 380                         // Then redirect to logout
 381                         //* DEBUG: */ echo __LINE__.": LOAD!<br />\n";
 382                         LOAD_URL("modules.php?module=admin&logout=1&".$EXT_LOAD_MODE."=sql_patches");
 383                 } // END - if
 384         } // END - if
 385
 386         // Remove cache file(s) if extension is active
 387         if (((EXT_IS_ACTIVE("cache")) || (GET_EXT_VERSION("cache") != "")) && (((SQL_AFFECTEDROWS() == 1)) || ($sqlRan === true) || ($EXT_LOAD_MODE == "activate") || ($EXT_LOAD_MODE == "deactivate"))) {
 388                 //* DEBUG: */ echo __LINE__.": DESTROY!<br />\n";
 389                 // Remove cache files
 390                 if ($cacheInstance->loadCacheFile("extensions", true)) $cacheInstance->destroyCacheFile();
 391                 if ($cacheInstance->loadCacheFile("mod_reg"))    $cacheInstance->destroyCacheFile();
 392                 if ($cacheInstance->loadCacheFile("config"))     $cacheInstance->destroyCacheFile();
 393
 394                 // @TODO This causes the whole (!) menu cache being purged
 395                 CACHE_PURGE_ADMIN_MENU();
 396         } // END - if
 397 }
 398 // Check if given extension is active
 399 function EXT_IS_ACTIVE ($ext_name) {
 400         global $cacheArray, $_CONFIG;
 401
 402         // Extensions are all inactive during installation
 403         if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing')) || (empty($ext_name))) return false;
 404
 405         // Not active is the default
 406         $active = "N";
 407
 408         // Check cache
 409         if (!empty($cacheArray['extensions']['ext_active'][$ext_name])) {
 410                 // Load from cache
 411                 //* DEBUG: */ echo "CACHE! ext_name={$ext_name}<br />\n";
 412                 $active = $cacheArray['extensions']['ext_active'][$ext_name];
 413
 414                 // Count cache hits
 415                 if (isset($_CONFIG['cache_hits'])) $_CONFIG['cache_hits']++;
 416         } elseif (($ext_name == "cache") || (GET_EXT_VERSION("cache") == "")) {
 417                 //* DEBUG: */ echo "DB! ext_name={$ext_name}<br />\n";
 418                 // Load from database
 419                 $result = SQL_QUERY_ESC("SELECT ext_active FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 420                  array($ext_name), __FILE__, __LINE__);
 421                 if (SQL_NUMROWS($result) == 0) {
 422                         // Extension was not found!
 423                         return false;
 424                 }
 425
 426                 // Load entry
 427                 list($active) = SQL_FETCHROW($result);
 428
 429                 // Free result
 430                 SQL_FREERESULT($result);
 431
 432
 433                 // Write cache array
 434                 //* DEBUG: */ echo $ext_name."[DB]: {$active}<br />\n";
 435                 $cacheArray['extensions']['ext_active'][$ext_name] = $active;
 436         } else {
 437                 // Extension not active!
 438                 //* DEBUG: */ echo $ext_name.": Not active!<br />\n";
 439                 $cacheArray['extensions']['ext_active'][$ext_name] = "N";
 440         }
 441
 442         // Debug message
 443         //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, " ext_name={$ext_name},active={$active}");
 444
 445         // Is this extension activated? (For admins we always have active extensions...)
 446         return ($active == "Y");
 447 }
 448 // Get version from extensions
 449 function GET_EXT_VERSION ($ext_name) {
 450         global $cacheArray, $_CONFIG, $cacheInstance;
 451         $ret = false;
 452
 453         // Extensions are all inactive during installation
 454         if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing'))) return "";
 455         //* DEBUG: */ print __FUNCTION__."(<font color=\"#0000aa\">".__LINE__."</font>): ext_name={$ext_name}<br />\n";
 456
 457         // Is the cache written?
 458         if (!empty($cacheArray['extensions']['ext_version'][$ext_name])) {
 459                 // Load data from cache
 460                 //* DEBUG: */ print __FUNCTION__."(<font color=\"#0000aa\">".__LINE__."</font>): CACHE!<br />\n";
 461                 $ret = $cacheArray['extensions']['ext_version'][$ext_name];
 462
 463                 // Count cache hits
 464                 if (isset($_CONFIG['cache_hits'])) $_CONFIG['cache_hits']++; else $_CONFIG['cache_hits'] = 1;
 465         } elseif (!is_object($cacheInstance)) {
 466                 // Load from database
 467                 $result = SQL_QUERY_ESC("SELECT ext_version FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 468                  array($ext_name), __FILE__, __LINE__);
 469                 list($ret) = SQL_FETCHROW($result);
 470                 SQL_FREERESULT($result);
 471
 472                 // Set cache
 473                 $cacheArray['extensions']['ext_version'][$ext_name] = $ret;
 474         }
 475
 476         // Return result
 477         //* DEBUG: */ print __FUNCTION__."(<font color=\"#0000aa\">".__LINE__."</font>): ret={$ret}<br />\n";
 478         return $ret;
 479 }
 480 //
 481 function EXTENSION_UPDATE($file, $ext, $EXT_VER, $dry_run=false)
 482 {
 483         // This shall never do a non-admin user!
 484         global $cacheInstance, $_CONFIG, $NOTES;
 485
 486         // Init arrays
 487         $SQLs = array(); $INC_POOL = array();
 488
 489         // Only admins are allowed to update extensions
 490         if ((!IS_ADMIN()) || (empty($ext))) return false;
 491
 492         // Load extension in update mode
 493         $EXT_LOAD_MODE = "update"; $EXT_UPDATE_DEPENDS = ""; $NOTES = "";
 494
 495         // Load extension file
 496         include(sprintf("%sinc/extensions/%s", PATH, $file));
 497
 498         if (!empty($EXT_UPDATE_DEPENDS)) {
 499                 // Update another extension first!
 500                 $test = EXTENSION_UPDATE(("ext-".$EXT_UPDATE_DEPENDS.".php"), $EXT_UPDATE_DEPENDS, GET_EXT_VERSION($EXT_UPDATE_DEPENDS), $dry_run);
 501         }
 502
 503         // Check if version is updated
 504         if ((($EXT_VERSION != $EXT_VER) || ($dry_run)) && (is_array($EXT_VER_HISTORY)))
 505         {
 506                 // Search for starting point
 507                 $start = array_search($EXT_VER, $EXT_VER_HISTORY);
 508                 $NOTES = "";
 509
 510                 // And load SQL queries in order of version history
 511                 for ($idx = ($start + 1); $idx < sizeof($EXT_VER_HISTORY); $idx++)
 512                 {
 513                         // Remove old SQLs array to prevent possible bugs
 514                         if (!$dry_run) { unset($SQLs); $SQLs = array(); }
 515
 516                         // Set version
 517                         $EXT_VER = $EXT_VER_HISTORY[$idx];
 518
 519                         // Include again...
 520                         include(PATH."inc/extensions/".$file);
 521
 522                         // Add notes
 523                         if ($_CONFIG['verbose_sql'] == "Y")
 524                         {
 525                                 $EXT_VER = $EXT_VER_HISTORY[$idx];
 526                                 if (!empty($UPDATE_NOTES))
 527                                 {
 528                                         // Update notes found
 529                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".$UPDATE_NOTES."<br /><br />\n";
 530                                         $UPDATE_NOTES = "";
 531                                 }
 532                                  elseif ($EXT_VER == "0.0")
 533                                 {
 534                                         // Initial release
 535                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".INITIAL_RELEASE."<br /><br />\n";
 536                                 }
 537                                  else
 538                                 {
 539                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br /><I>".NO_UPDATE_NOTES."</I><br /><br />\n";
 540                                 }
 541                         }
 542
 543                         // In real-mode execute any existing includes
 544                         if ((!$dry_run) && (count($INC_POOL) > 0)) {
 545                                 // Include all files
 546                                 foreach ($INC_POOL as $fqfn) {
 547                                         require_once($fqfn);
 548                                 } // END - foreach
 549                         } // END - if
 550
 551                         // Run SQLs
 552                         if ((is_array($SQLs)) && (!$dry_run)) {
 553                                 // Run SQL commands
 554                                 foreach ($SQLs as $sql)
 555                                 {
 556                                         $sql = trim($sql);
 557                                         if (!empty($sql))
 558                                         {
 559                                                 // Do we have an "ALTER TABLE" command?
 560                                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
 561                                                         // Analyse the alteration command
 562                                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
 563                                                 } else {
 564                                                         // Run regular SQL command
 565                                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
 566                                                 }
 567                                         }
 568                                 }
 569                         } elseif (GET_EXT_VERSION("sql_patches") == "") {
 570                                 // Remove SQLs if extension is not installed
 571                                 $SQLs = array();
 572                         }
 573                 }
 574
 575                 if (!$dry_run)
 576                 {
 577                         // In normal mode insert task and update extension's version...
 578                         $ext_subj = "[UPDATE-".$ext."-".$EXT_VERSION.":] ".ADMIN_UPDATE_EXT_SUBJ;
 579
 580                         // Create task
 581                         CREATE_EXTENSION_UPDATE_TASK(GET_ADMIN_ID(get_session('admin_login')), $ext_subj, addslashes($NOTES));
 582
 583                         // Update extension's version
 584                         $result = SQL_QUERY_ESC("UPDATE "._MYSQL_PREFIX."_extensions SET ext_version='%s' WHERE ext_name='%s' LIMIT 1",
 585                          array($EXT_VERSION, $ext), __FILE__, __LINE__);
 586
 587                         // Update cache
 588                         if (EXT_IS_ACTIVE("cache")) {
 589                                 if ($cacheInstance->loadCacheFile("extensions", true)) $cacheInstance->destroyCacheFile();
 590                                 if ($cacheInstance->loadCacheFile("config")) $cacheInstance->destroyCacheFile();
 591                                 if ($cacheInstance->loadCacheFile("mod_reg")) $cacheInstance->destroyCacheFile();
 592                         } // END - if
 593
 594                         // Remove array
 595                         unset($SQLs);
 596                 } else {
 597                         // In "dry-run" mode return array with SQL commands
 598                         return $SQLs;
 599                 }
 600         }
 601 }
 602
 603 // Output verbose SQL table for extension
 604 function EXTENSION_VERBOSE_TABLE($SQLs, $title = ADMIN_SQLS_EXECUTED_ON_REMOVAL, $dashed = "", $switch = false, $WIDTH = "480") {
 605         global $_CONFIG;
 606
 607         $S = false; $SW = 2; $i = 1;
 608         $OUT = "";
 609         if ((is_array($SQLs)) && (GET_EXT_VERSION("sql_patches") >= "0.0.7") && ($_CONFIG['verbose_sql'] == "Y")) {
 610                 $OUT  = "<DIV align=\"center\">
 611 <TABLE border=\"0\" cellspacing=\"0\" cellpadding=\"0\" width=\"".$WIDTH."\" align=\"center\"".$dashed.">
 612 <TR>
 613   <TD colspan=\"2\" align=\"center\" class=\"admin_title bottom2\" height=\"24\">
 614     <STRONG>".$title.":</STRONG>
 615   </TD>
 616 </TR>\n";
 617                 foreach ($SQLs as $idx => $sql) {
 618                         $sql = trim($sql);
 619                         if (!empty($sql)) {
 620                                 $S = true;
 621                                 $OUT .= "<TR>
 622   <TD class=\"switch_sw".(3 - $SW)." bottom2\" style=\"padding-left: 2px\" width=\"30\">".$i.".</TD>
 623   <TD class=\"switch_sw".(3 - $SW)." bottom2\" style=\"padding-left: 5px; padding-right: 5px\">
 624     ".$sql."
 625   </TD>
 626 </TR>\n";
 627                                 if ($switch) $SW = 3 - $SW;
 628                                 $i++;
 629                         }
 630                 }
 631         }
 632
 633         if ((!$S) && (GET_EXT_VERSION("sql_patches") >= "0.0.7") && ($_CONFIG['verbose_sql'] == "Y")) {
 634                 // No addional SQL commands to run
 635                 $OUT .= "<TR>
 636   <TD colspan=\"2\" align=\"center\" class=\"switch_sw2 bottom2\" height=\"24\">
 637     <FONT class=\"admin_note\">".ADMIN_NO_ADDIONAL_SQLS."</FONT>
 638   </TD>
 639 </TR>\n";
 640         }
 641
 642         if (!empty($OUT)) {
 643                 // Add missing close-table tag
 644                 $OUT .= "</TABLE>
 645 </DIV>\n";
 646         }
 647
 648         // Return output
 649         return $OUT;
 650 }
 651
 652 // Get extension name from id
 653 function GET_EXT_NAME ($id) {
 654         $ret = "";
 655         global $cacheArray, $_CONFIG;
 656         if (!empty($cacheArray['extensions']['ext_name'][$id])) {
 657                 // Load from cache
 658                 $ret = $cacheArray['extensions']['ext_name'][$id];
 659
 660                 // Count cache hits
 661                 if (isset($_CONFIG['cache_hits'])) { $_CONFIG['cache_hits']++; } else { $_CONFIG['cache_hits'] = 1; }
 662         } elseif (!EXT_IS_ACTIVE("cache")) {
 663                 // Load from database
 664                 $result = SQL_QUERY_ESC("SELECT ext_name FROM "._MYSQL_PREFIX."_extensions WHERE id=%s LIMIT 1",
 665                  array(bigintval($id)), __FILE__, __LINE__);
 666                 list($ret) = SQL_FETCHROW($result);
 667                 SQL_FREERESULT($result);
 668         }
 669         return $ret;
 670 }
 671
 672 // Get extension id from name
 673 function GET_EXT_ID($name) {
 674         $ret = 0;
 675         global $cacheArray, $_CONFIG;
 676         if (isset($cacheArray['extensions']['ext_id'][$name])) {
 677                 // Load from cache
 678                 $ret = $cacheArray['extensions']['ext_id'][$name];
 679
 680                 // Count cache hits
 681                 if (isset($_CONFIG['cache_hits'])) { $_CONFIG['cache_hits']++; } else { $_CONFIG['cache_hits'] = 1; }
 682         } elseif (!EXT_IS_ACTIVE("cache")) {
 683                 // Load from database
 684                 $result = SQL_QUERY_ESC("SELECT id FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
 685                  array($name), __FILE__, __LINE__);
 686                 list($ret) = SQL_FETCHROW($result);
 687                 SQL_FREERESULT($result);
 688         }
 689
 690         // Return value
 691         return $ret;
 692 }
 693
 694 // Activate given extension
 695 function ACTIVATE_EXTENSION($ext_name) {
 696         // Activate the extension
 697         $result = SQL_QUERY_ESC("UPDATE "._MYSQL_PREFIX."_extensions SET ext_active='Y' WHERE ext_name='%s' LIMIT 1",
 698                 array($ext_name), __FILE__, __LINE__);
 699
 700         // Extension has been activated?
 701         if (SQL_AFFECTEDROWS() == 1) {
 702                 // Then run all queries
 703                 EXTENSION_RUN_SQLS(GET_EXT_ID($ext_name), "activate");
 704         } // END - if
 705 }
 706
 707 // Checks wether the extension is older than given
 708 function EXT_VERSION_IS_OLDER ($ext_name, $ext_ver) {
 709         // Get current extension version
 710         $currVersion = GET_EXT_VERSION($ext_name);
 711
 712         // Remove all dots from both versions
 713         $currVersion = str_replace(".", "", $currVersion);
 714         $ext_ver = str_replace(".", "", $ext_ver);
 715
 716         // Now compare both and return the result
 717         return ($currVersion < $ext_ver);
 718 }
 719 //
 720 ?>