50820f59487c26cde3fe1cd6b96fba6b129bcdbe
[mailer.git] / inc / extensions.php
1 <?php
2 /************************************************************************
3  * MXChange v0.2.1                                    Start: 03/25/2004 *
4  * ===============                              Last change: 09/29/2004 *
5  *                                                                      *
6  * -------------------------------------------------------------------- *
7  * File              : extensions.php                                   *
8  * -------------------------------------------------------------------- *
9  * Short description : Extension management                             *
10  * -------------------------------------------------------------------- *
11  * Kurzbeschreibung  : Erweiterungen-Management                         *
12  * -------------------------------------------------------------------- *
13  *                                                                      *
14  * -------------------------------------------------------------------- *
15  * Copyright (c) 2003 - 2008 by Roland Haeder                           *
16  * For more information visit: http://www.mxchange.org                  *
17  *                                                                      *
18  * This program is free software; you can redistribute it and/or modify *
19  * it under the terms of the GNU General Public License as published by *
20  * the Free Software Foundation; either version 2 of the License, or    *
21  * (at your option) any later version.                                  *
22  *                                                                      *
23  * This program is distributed in the hope that it will be useful,      *
24  * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
26  * GNU General Public License for more details.                         *
27  *                                                                      *
28  * You should have received a copy of the GNU General Public License    *
29  * along with this program; if not, write to the Free Software          *
30  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,               *
31  * MA  02110-1301  USA                                                  *
32  ************************************************************************/
33
34 // Some security stuff...
35 if (!defined('__SECURITY')) {
36         $INC = substr(dirname(__FILE__), 0, strpos(dirname(__FILE__), "/inc") + 4) . "/security.php";
37         require($INC);
38 }
39
40 //
41 function EXTENSION_REGISTER ($ext_name, $id, $dry_run=false)
42 {
43         global $NOTES, $_CONFIG, $INC_POOL, $cacheInstance;
44         // We want to register an extension and registration status is by default "failed" (= false)
45         $EXT_LOAD_MODE = "register"; $ret = false; $SQLs = array();
46         $INC_POOL = array();
47
48         // This shall never do a non-admin user!
49         if (!IS_ADMIN()) return false;
50
51         // Is this extension already installed?
52         if (EXT_IS_ACTIVE($ext_name)) return false;
53
54         // Generate file name
55         $file = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
56
57         // Does this extension exists?
58         if (FILE_READABLE($file))
59         {
60                 // Extension was found so we can load it in registration mode
61                 require($file);
62
63                 // And run possible updates
64                 $EXT_LOAD_MODE = "update"; $EXT_UPDATE_DEPENDS = "";
65                 foreach ($EXT_VER_HISTORY as $EXT_VER)
66                 {
67                         require($file);
68                         if (((GET_EXT_VERSION("sql_patches") != '') && ($_CONFIG['verbose_sql'] == "Y")) || (!EXT_IS_ACTIVE("sql_patches")))
69                         {
70                                 if (!empty($UPDATE_NOTES))
71                                 {
72                                         // Update notes found
73                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".$UPDATE_NOTES."<br /><br />\n";
74                                         $UPDATE_NOTES = "";
75                                 }
76                                  elseif (($EXT_VER == "0.0") || ($EXT_VER == "0.0.0"))
77                                 {
78                                         // Initial release
79                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".INITIAL_RELEASE."<br /><br />\n";
80                                 }
81                                  else
82                                 {
83                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br /><I>".NO_UPDATE_NOTES."</I><br /><br />\n";
84                                 }
85                         }
86                 }
87
88                 // Does this extension depends on an outstanding update of another update?
89                 if (!empty($EXT_UPDATE_DEPENDS))
90                 {
91                         // Backup SQL commands and clear current
92                         $SQLs2 = $SQLs;  $SQLs = array(); $test = false;
93
94                         // Backup language as well
95                         $LANG_BCK = $EXT_LANG_PREFIX; $EXT_ALWAYS_ACTIVE = "N";
96
97                         // Load required extension also in update mode
98                         $file = sprintf("%sinc/extensions/ext-%s.php", PATH, $EXT_UPDATE_DEPENDS);
99
100                         // Check for required file
101                         if (FILE_READABLE($file))
102                         {
103                                 // File exists so let's load it
104                                 $VER_BACKUP = $EXT_VERSION;
105                                 require($file);
106                                 $EXT_VERSION = $VER_BACKUP;
107
108                                 // If versions mismatch update extension first
109                                 $ext_ver = GET_EXT_VERSION($EXT_UPDATE_DEPENDS);
110                                 if (empty($ext_ver))
111                                 {
112                                         // Extension not registered so far so first load task's ID...
113                                         $result = SQL_QUERY_ESC("SELECT id FROM "._MYSQL_PREFIX."_task_system WHERE task_type='EXTENSION' AND subject LIKE '[%s:]%%' LIMIT 1",
114                                          array($EXT_UPDATE_DEPENDS), __FILE__, __LINE__);
115                                         if (SQL_NUMROWS($result) == 1)
116                                         {
117                                                 // Task found so load task's ID and register extension...
118                                                 list($task) = SQL_FETCHROW($result);
119                                                 SQL_FREERESULT($result);
120                                                 $test = EXTENSION_REGISTER($EXT_UPDATE_DEPENDS, $task, $dry_run);
121                                         }
122                                 }
123                                  elseif ($ext_ver != $EXT_VERSION)
124                                 {
125                                         // Ok, update this extension now
126                                         EXTENSION_UPDATE(basename($file), $EXT_UPDATE_DEPENDS, $ext_ver, $dry_run);
127
128                                         // All okay!
129                                         $test = true;
130                                 }
131                                  else
132                                 {
133                                         // Nothing to register / update before...
134                                         $test = true;
135                                 }
136                         }
137                          else
138                         {
139                                 // Required file for update does not exists!
140                                 $test = true;
141                                 // But this is fine for the first time...
142                         }
143
144                         // Finally restore previous SQLs
145                         $SQLs = $SQLs2; unset($SQLs2);
146                         $EXT_LANG_PREFIX = $LANG_BCK;
147                 }
148                  else
149                 {
150                         // Does not depend on an other extension
151                         $test = true;
152                 }
153
154                 // Switch back to register mode
155                 $EXT_LOAD_MODE = "register";
156
157                 // Does everthing before wents ok?
158                 if ($test) {
159                         // "Dry-run-mode" activated?
160                         if (!$dry_run) {
161                                 // Run all SQLs
162                                 foreach ($SQLs as $sql) {
163                                         // Trim spaces away which we don't need
164                                         $sql = trim($sql);
165
166                                         // Is there still an SQL query?
167                                         if (!empty($sql)) {
168                                                 // Do we have an "ALTER TABLE" command?
169                                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
170                                                         // Analyse the alteration command
171                                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
172                                                 } else {
173                                                         // Run regular SQL command
174                                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
175                                                 }
176                                         } // END - if
177                                 } // END - foreach
178
179                                 // Remove cache file(s) if extension is active
180                                 if ((EXT_IS_ACTIVE("cache")) || (GET_EXT_VERSION("cache") != "")) {
181                                         //* DEBUG: */ echo __LINE__.": DESTROY!<br />\n";
182                                         // Remove cache files
183                                         if ($cacheInstance->cache_file("extensions", true)) $cacheInstance->cache_destroy();
184                                         if ($cacheInstance->cache_file("mod_reg", true))    $cacheInstance->cache_destroy();
185                                         if ($cacheInstance->cache_file("config", true))     $cacheInstance->cache_destroy();
186                                 } // END - if
187
188                                 // Check for added include files
189                                 if (count($INC_POOL > 0)) {
190                                         // Loads every include file
191                                         foreach ($INC_POOL as $inc) {
192                                                 require_once($inc);
193                                         } // END - foreach
194                                 } // END - if
195
196                                 // Register extension
197                                 $result = SQL_QUERY_ESC("INSERT INTO "._MYSQL_PREFIX."_extensions (ext_name, ext_lang_file, ext_active, ext_version) VALUES ('%s', '%s', '%s', '%s')",
198                                  array($ext_name, $EXT_LANG_PREFIX, $EXT_ALWAYS_ACTIVE, $EXT_VERSION), __FILE__, __LINE__);
199
200                                 // Update task management
201                                 ADMIN_SOLVE_TASK($id);
202
203                                 // @TODO This causes the whole (!) menu cache being purged
204                                 CACHE_PURGE_ADMIN_MENU();
205
206                                 // In normal mode return a true on success
207                                 $ret = true;
208
209                                 // Remove SQLs
210                                 unset($SQLs);
211                         } else {
212                                 // Rewrite SQL command to keep { and } inside
213                                 foreach ($SQLs as $key => $sql) {
214                                         $sql = str_replace('{', "&#123;", str_replace('}', "&#125;", $sql));
215                                         $SQLs[$key] = $sql;
216                                 } // END - foreach
217
218                                 // In  "dry-run" mode return array with all SQL commands
219                                 $ret = $SQLs;
220
221                                 // Remove all SQL commands
222                                 unset($SQLs);
223                         }
224                 } else {
225                         // No, an error occurs while registering extension :-(
226                         $ret = false;
227                 }
228         } elseif (($id > 0) && (!empty($ext_name))) {
229                 // Remove task from system when id and extension's name is valid
230                 $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_task_system WHERE id=%s AND status='NEW' LIMIT 1",
231                  array(bigintval($id)), __FILE__, __LINE__);
232         }
233
234         // Is this the sql_patches?
235         //* DEBUG: */ echo __LINE__.":{$ext_name}/{$EXT_LOAD_MODE}<br />\n";
236         if (($ext_name == "sql_patches") && (($EXT_LOAD_MODE == "register") || ($EXT_LOAD_MODE == "remove")) && (!$dry_run) && ($test)) {
237                 // Then redirect to logout
238                 //* DEBUG: */ echo __LINE__.": LOAD!<br />\n";
239                 LOAD_URL("modules.php?module=admin&logout=1&".$EXT_LOAD_MODE."=sql_patches");
240         } // END - if
241
242         // Return status code
243         return $ret;
244 }
245 //
246 function EXTENSION_RUN_SQLS($id, $EXT_LOAD_MODE) {
247         global $cacheInstance;
248         $SQLs = array();
249
250         // By default no SQL has been executed
251         $sqlRan = false;
252
253         // This shall never do a non-admin user!
254         if (!IS_ADMIN()) return false;
255
256         // Get extension's name
257         $ext_name = GET_EXT_NAME($id);
258         if (empty($ext_name)) return false;
259
260         // Load extension in detected mode
261         //* DEBUG: */ echo __FUNCTION__.":ext_name[{$id}]={$ext_name}<br />\n";
262         $file = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
263         if (FILE_READABLE($file)) {
264                 // Load the include
265                 require($file);
266         }
267
268         //* DEBUG: */ echo __FUNCTION__.":SQLs::count=".count($SQLs)."<br />\n";
269         if ((is_array($SQLs) && (sizeof($SQLs) > 0))) {
270                 // Run SQL commands...
271                 foreach ($SQLs as $sql) {
272                         // Trim spaces away which we don't need
273                         $sql = trim($sql);
274
275                         // Is there still an SQL query?
276                         if (!empty($sql)) {
277                                 // Do we have an "ALTER TABLE" command?
278                                 //* DEBUG: */ echo __FUNCTION__.":SQL={$SQL}<br />\n";
279                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
280                                         // Analyse the alteration command
281                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
282                                 } else {
283                                         // Run regular SQL command
284                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
285                                 }
286
287                                 // An SQL has been executed
288                                 $sqlRan = true;
289                         } // END - if
290                 } // END - foreach
291
292                 // Removal mode?
293                 if ($EXT_LOAD_MODE == "remove") {
294                         // Delete this extension (remember to remove it from your server *before* you click on welcome!
295                         $result = SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM "._MYSQL_PREFIX."_extensions WHERE id=%s LIMIT 1",
296                          array($id), __FILE__, __LINE__);
297                 } // END - if
298
299                 //* DEBUG: */ echo __FUNCTION__.":mode={$EXT_LOAD_MODE}<br />\n";
300
301                 // Remove cache file(s) if extension is active
302                 if (((EXT_IS_ACTIVE("cache")) || (GET_EXT_VERSION("cache") != "")) && (((SQL_AFFECTEDROWS() == 1) && ($EXT_LOAD_MODE == "remove")) || ($sqlRan === true))) {
303                         //* DEBUG: */ echo __LINE__.": DESTROY!<br />\n";
304                         // Remove cache files
305                         if ($cacheInstance->cache_file("extensions", true)) $cacheInstance->cache_destroy();
306                         if ($cacheInstance->cache_file("mod_reg", true))    $cacheInstance->cache_destroy();
307                         if ($cacheInstance->cache_file("config", true))     $cacheInstance->cache_destroy();
308
309                         // @TODO This causes the whole (!) menu cache being purged
310                         CACHE_PURGE_ADMIN_MENU();
311                 } // END - if
312
313                 // Is this the sql_patches?
314                 //* DEBUG: */ echo __LINE__.": {$id}/{$ext_name}/{$EXT_LOAD_MODE}<br />\n";
315                 if (($ext_name == "sql_patches") && (($EXT_LOAD_MODE == "register") || ($EXT_LOAD_MODE == "remove"))) {
316                         // Then redirect to logout
317                         //* DEBUG: */ echo __LINE__.": LOAD!<br />\n";
318                         LOAD_URL("modules.php?module=admin&logout=1&".$EXT_LOAD_MODE."=sql_patches");
319                 } // END - if
320         } // END - if
321 }
322 // Check if given extension is active
323 function EXT_IS_ACTIVE ($ext_name) {
324         global $cacheArray, $_CONFIG;
325
326         // Extensions are all inactive during installation
327         if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing')) || (empty($ext_name))) return false;
328
329         // Not active is the default
330         $active = "N";
331
332         // Check cache
333         if (!empty($cacheArray['extensions']['ext_active'][$ext_name])) {
334                 // Load from cache
335                 //* DEBUG: */ echo "CACHE! ext_name={$ext_name}<br />\n";
336                 $active = $cacheArray['extensions']['ext_active'][$ext_name];
337
338                 // Count cache hits
339                 if (isset($_CONFIG['cache_hits'])) $_CONFIG['cache_hits']++;
340         } elseif (($ext_name == "cache") || (GET_EXT_VERSION("cache") == "")) {
341                 //* DEBUG: */ echo "DB! ext_name={$ext_name}<br />\n";
342                 // Load from database
343                 $result = SQL_QUERY_ESC("SELECT ext_active FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
344                  array($ext_name), __FILE__, __LINE__);
345                 if (SQL_NUMROWS($result) == 0) {
346                         // Extension was not found!
347                         return false;
348                 }
349                 list($active) = SQL_FETCHROW($result);
350                 //* DEBUG: */ echo $ext_name."[DB]: {$active}<br />\n";
351                 SQL_FREERESULT($result);
352
353                 // Write cache array
354                 $cacheArray['extensions']['ext_active'][$ext_name] = $active;
355         } else {
356                 // Extension not active!
357                 //* DEBUG: */ echo $ext_name.": Not active!<br />\n";
358                 $cacheArray['extensions']['ext_active'][$ext_name] = "N";
359         }
360
361         // Create FQFN for extension file
362         $inc = sprintf("%sinc/extensions/ext-%s.php", PATH, $ext_name);
363
364         // Debug message
365         //DEBUG_LOG(__FUNCTION__.": ext_name={$ext_name},active={$active}");
366
367         // Is this extension activated? (For admins we always have active extensions...)
368         return ($active == "Y");
369 }
370 // Get version from extensions
371 function GET_EXT_VERSION ($ext_name) {
372         global $cacheArray, $_CONFIG, $cacheInstance;
373         $ret = false;
374
375         // Extensions are all inactive during installation
376         if ((!isBooleanConstantAndTrue('mxchange_installed')) || (isBooleanConstantAndTrue('mxchange_installing'))) return "";
377         //* DEBUG: */ echo __FUNCTION__.": ext_name={$ext_name}<br />\n";
378
379         // Is the cache written?
380         if (!empty($cacheArray['extensions']['ext_version'][$ext_name])) {
381                 // Load data from cache
382                 //* DEBUG: */ echo __FUNCTION__.": CACHE!<br />\n";
383                 $ret = $cacheArray['extensions']['ext_version'][$ext_name];
384
385                 // Count cache hits
386                 if (isset($_CONFIG['cache_hits'])) $_CONFIG['cache_hits']++; else $_CONFIG['cache_hits'] = 1;
387         } elseif (!is_object($cacheInstance)) {
388                 // Load from database
389                 $result = SQL_QUERY_ESC("SELECT ext_version FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
390                  array($ext_name), __FILE__, __LINE__);
391                 list($ret) = SQL_FETCHROW($result);
392                 SQL_FREERESULT($result);
393
394                 // Set cache
395                 $cacheArray['extensions']['ext_version'][$ext_name] = $ret;
396         }
397
398         // Return result
399         //* DEBUG: */ echo __FUNCTION__.": ret={$ret}<br />\n";
400         return $ret;
401 }
402 //
403 function EXTENSION_UPDATE($file, $ext, $EXT_VER, $dry_run=false)
404 {
405         // This shall never do a non-admin user!
406         global $cacheInstance, $_CONFIG, $NOTES; $SQLs = array();
407         if ((!IS_ADMIN()) || (empty($ext))) return false;
408
409         // Load extension in update mode
410         $EXT_LOAD_MODE = "update"; $EXT_UPDATE_DEPENDS = ""; $NOTES = "";
411         include(PATH."inc/extensions/".$file);
412         if (!empty($EXT_UPDATE_DEPENDS))
413         {
414                 // Update another extension first!
415                 $test = EXTENSION_UPDATE(("ext-".$EXT_UPDATE_DEPENDS.".php"), $EXT_UPDATE_DEPENDS, GET_EXT_VERSION($EXT_UPDATE_DEPENDS), $dry_run);
416         }
417
418         // Check if version is updated
419         if ((($EXT_VERSION != $EXT_VER) || ($dry_run)) && (is_array($EXT_VER_HISTORY)))
420         {
421                 // Search for starting point
422                 $start = array_search($EXT_VER, $EXT_VER_HISTORY);
423                 $NOTES = "";
424
425                 // And load SQL queries in order of version history
426                 for ($idx = ($start + 1); $idx < sizeof($EXT_VER_HISTORY); $idx++)
427                 {
428                         // Remove old SQLs array to prevent possible bugs
429                         if (!$dry_run) { unset($SQLs); $SQLs = array(); }
430
431                         // Set version
432                         $EXT_VER = $EXT_VER_HISTORY[$idx];
433
434                         // Include again...
435                         include(PATH."inc/extensions/".$file);
436
437                         // Add notes
438                         if ($_CONFIG['verbose_sql'] == "Y")
439                         {
440                                 $EXT_VER = $EXT_VER_HISTORY[$idx];
441                                 if (!empty($UPDATE_NOTES))
442                                 {
443                                         // Update notes found
444                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".$UPDATE_NOTES."<br /><br />\n";
445                                         $UPDATE_NOTES = "";
446                                 }
447                                  elseif ($EXT_VER == "0.0")
448                                 {
449                                         // Initial release
450                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br />".INITIAL_RELEASE."<br /><br />\n";
451                                 }
452                                  else
453                                 {
454                                         $NOTES .= "<STRONG>v".$EXT_VER.":</STRONG><br /><I>".NO_UPDATE_NOTES."</I><br /><br />\n";
455                                 }
456                         }
457
458                         // Run SQLs
459                         if ((is_array($SQLs)) && (!$dry_run))
460                         {
461                                 // Run SQL commands
462                                 foreach ($SQLs as $sql)
463                                 {
464                                         $sql = trim($sql);
465                                         if (!empty($sql))
466                                         {
467                                                 // Do we have an "ALTER TABLE" command?
468                                                 if (substr(strtolower($sql), 0, 11) == "alter table") {
469                                                         // Analyse the alteration command
470                                                         SQL_ALTER_TABLE($sql, __FILE__, __LINE__);
471                                                 } else {
472                                                         // Run regular SQL command
473                                                         $result = SQL_QUERY($sql, __FILE__, __LINE__, false);
474                                                 }
475                                         }
476                                 }
477                         } elseif (GET_EXT_VERSION("sql_patches") == "") {
478                                 // Remove SQLs if extension is not installed
479                                 $SQLs = array();
480                         }
481                 }
482
483                 if (!$dry_run)
484                 {
485                         // In normal mode insert task and update extension's version...
486                         $ext_subj = "[UPDATE-".$ext."-".$EXT_VERSION.":] ".ADMIN_UPDATE_EXT_SUBJ;
487
488                         // Create task
489                         CREATE_EXTENSION_UPDATE_TASK(GET_ADMIN_ID(get_session('admin_login')), $ext_subj, addslashes($NOTES));
490
491                         // Update extension's version
492                         $result = SQL_QUERY_ESC("UPDATE "._MYSQL_PREFIX."_extensions SET ext_version='%s' WHERE ext_name='%s' LIMIT 1",
493                          array($EXT_VERSION, $ext), __FILE__, __LINE__);
494
495                         // Update cache
496                         if (EXT_IS_ACTIVE("cache")) {
497                                 if ($cacheInstance->cache_file("extensions", true) == true) $cacheInstance->cache_destroy();
498                                 if ($cacheInstance->cache_file("config", true) == true)     $cacheInstance->cache_destroy();
499                                 if ($cacheInstance->cache_file("mod_reg", true) == true)    $cacheInstance->cache_destroy();
500                         } // END - if
501
502                         // Remove array
503                         unset($SQLs);
504                 } else {
505                         // In "dry-run" mode return array with SQL commands
506                         return $SQLs;
507                 }
508         }
509 }
510 //
511 function EXTENSION_VERBOSE_TABLE($SQLs, $title = ADMIN_SQLS_EXECUTED_ON_REMOVAL, $dashed = "", $switch = false, $WIDTH = "480") {
512         global $_CONFIG;
513
514         $S = false; $SW = 2; $i = 1;
515         $OUT = "";
516         if ((is_array($SQLs)) && (GET_EXT_VERSION("sql_patches")) && ($_CONFIG['verbose_sql'] == "Y")) {
517                 $OUT  = "<DIV align=\"center\">
518 <TABLE border=\"0\" cellspacing=\"0\" cellpadding=\"0\" width=\"".$WIDTH."\" align=\"center\"".$dashed.">
519 <TR>
520   <TD colspan=\"2\" align=\"center\" class=\"admin_title bottom2\" height=\"24\">
521     <STRONG>".$title.":</STRONG>
522   </TD>
523 </TR>\n";
524                 foreach ($SQLs as $idx => $sql) {
525                         $sql = trim($sql);
526                         if (!empty($sql)) {
527                                 $S = true;
528                                 $OUT .= "<TR>
529   <TD class=\"switch_sw".(3 - $SW)." bottom2\" style=\"padding-left: 2px\" width=\"30\">".$i.".</TD>
530   <TD class=\"switch_sw".(3 - $SW)." bottom2\" style=\"padding-left: 5px; padding-right: 5px\">
531     ".$sql."
532   </TD>
533 </TR>\n";
534                                 if ($switch) $SW = 3 - $SW;
535                                 $i++;
536                         }
537                 }
538         }
539
540         if ((!$S) && (GET_EXT_VERSION("sql_patches")) && ($_CONFIG['verbose_sql'] == "Y")) {
541                 // No addional SQL commands to run
542                 $OUT .= "<TR>
543   <TD colspan=\"2\" align=\"center\" class=\"switch_sw2 bottom2\" height=\"24\">
544     <FONT class=\"admin_note\">".ADMIN_NO_ADDIONAL_SQLS."</FONT>
545   </TD>
546 </TR>\n";
547         }
548
549         if (!empty($OUT)) {
550                 // Add missing close-table tag
551                 $OUT .= "</TABLE>
552 </DIV>\n";
553         }
554
555         // Return output
556         return $OUT;
557 }
558 // Get extension name from id
559 function GET_EXT_NAME ($id) {
560         $ret = "";
561         global $cacheArray, $_CONFIG;
562         if (!empty($cacheArray['extensions']['ext_name'][$id])) {
563                 // Load from cache
564                 $ret = $cacheArray['extensions']['ext_name'][$id];
565
566                 // Count cache hits
567                 $_CONFIG['cache_hits']++;
568         } elseif (!EXT_IS_ACTIVE("cache")) {
569                 // Load from database
570                 $result = SQL_QUERY_ESC("SELECT ext_name FROM "._MYSQL_PREFIX."_extensions WHERE id=%s LIMIT 1",
571                  array(bigintval($id)), __FILE__, __LINE__);
572                 list($ret) = SQL_FETCHROW($result);
573                 SQL_FREERESULT($result);
574         }
575         return $ret;
576 }
577 // Get extension id from name
578 function GET_EXT_ID($name) {
579         $ret = 0;
580         global $cacheArray, $_CONFIG;
581         if (isset($cacheArray['extensions']['ext_id'][$name])) {
582                 // Load from cache
583                 $ret = $cacheArray['extensions']['ext_id'][$name];
584
585                 // Count cache hits
586                 $_CONFIG['cache_hits']++;
587         } elseif (!EXT_IS_ACTIVE("cache")) {
588                 // Load from database
589                 $result = SQL_QUERY_ESC("SELECT id FROM "._MYSQL_PREFIX."_extensions WHERE ext_name='%s' LIMIT 1",
590                  array($name), __FILE__, __LINE__);
591                 list($ret) = SQL_FETCHROW($result);
592                 SQL_FREERESULT($result);
593         }
594
595         // Return value
596         return $ret;
597 }
598 // Activate given extension
599 function ACTIVATE_EXTENSION($ext_name) {
600         // Activate the extension
601         $result = SQL_QUERY_ESC("UPDATE "._MYSQL_PREFIX."_extensions SET ext_active='Y' WHERE ext_name='%s' LIMIT 1",
602                 array($ext_name), __FILE__, __LINE__);
603
604         // Extension has been activated?
605         if (SQL_AFFECTEDROWS() == 1) {
606                 // Then run all queries
607                 EXTENSION_RUN_SQLS(GET_EXT_ID($ext_name), "activate");
608         } // END - if
609 }
610 //
611 ?>