Function loadLanguageFile() does now support extensions
[mailer.git] / inc / extensions.php
index 765d1d8100b7c582068f4ca8445f558c1737eeeb..1b17f1101fac4658a573bf05fec6feb3d70bbd4d 100644 (file)
@@ -79,21 +79,8 @@ function LOAD_EXTENSION ($ext_name, $EXT_LOAD_MODE = '', $EXT_VER = '', $dry_run
                return false;
        } // END - if
 
-       // Construct FQFN for language file
-       $langInclude = sprintf("inc/language/%s_%s.php", $ext_name, getLanguage());
-
-       // Is this include there?
-       if ((isFileReadable($langInclude)) && (!isset($GLOBALS['ext_loaded']['lang'][$ext_name]))) {
-               // Then load it
-               //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, "--- Language loaded.");
-               $GLOBALS['ext_loaded']['lang'][$ext_name] = true;
-               loadIncludeOnce($langInclude);
-       } elseif ($ext_name != 'sql_patches') {
-               // No language file is not so good...
-               DEBUG_LOG(__FUNCTION__, __LINE__, sprintf("WARNING: Extension %s has no language file or we cannot read from it. lang=%s",
-                       $ext_name, getLanguage()
-               ));
-       }
+       // Load extension's own language file
+       loadLanguageFile($ext_name);
 
        // Construct FQFN for functions file
        $funcsInclude = sprintf("inc/libs/%s_functions.php", $ext_name);
@@ -104,7 +91,7 @@ function LOAD_EXTENSION ($ext_name, $EXT_LOAD_MODE = '', $EXT_VER = '', $dry_run
                //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, "--- Functions loaded.");
                $GLOBALS['ext_loaded']['funcs'][$ext_name] = true;
                loadIncludeOnce($funcsInclude);
-       } elseif ($ext_name != 'sql_patches') {
+       } elseif ((isDebugModeEnabled()) && ($ext_name != 'sql_patches') && (substr($ext_name, 0, 10) != 'admintheme')) {
                // No functions file is not so good...
                DEBUG_LOG(__FUNCTION__, __LINE__, sprintf("WARNING: Extension %s has no own functions file or we cannot read from it.",
                        $ext_name
@@ -148,7 +135,7 @@ function REGISTER_EXTENSION ($ext_name, $task_id, $dry_run = false, $logout = tr
        // Set current extension name
        EXT_SET_CURR_NAME($ext_name);
 
-       //* DEBUG: */ print __FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME()." - ENTERED!<br />\n";
+       //* DEBUG: */ OUTPUT_HTML(__FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME()." - ENTERED!<br />");
        // This shall never do a non-admin user or if the extension is active (already installed)
        if ((!IS_ADMIN()) || (EXT_IS_ACTIVE($ext_name))) {
                return false;
@@ -157,7 +144,7 @@ function REGISTER_EXTENSION ($ext_name, $task_id, $dry_run = false, $logout = tr
        // When this extension is already in install/update phase, all is fine
        if (EXT_IS_REGISTER_RUNNING($ext_name)) {
                // Then abort here which is fine
-               //* DEBUG: */ print __FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME()." - ALREADY!<br />\n";
+               //* DEBUG: */ OUTPUT_HTML(__FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME()." - ALREADY!<br />");
                return true;
        } // END - if
 
@@ -236,9 +223,12 @@ function REGISTER_EXTENSION ($ext_name, $task_id, $dry_run = false, $logout = tr
                                        // Entry found?
                                        if ($task > 0) {
                                                // Try to register the extension
-                                               //* DEBUG: */ print __FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME().":ext_update=".$ext_update.",taskId=".$task."<br />\n";
+                                               //* DEBUG: */ OUTPUT_HTML(__FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME().":ext_update=".$ext_update.",taskId=".$task."<br />");
                                                $test = REGISTER_EXTENSION($ext_update, $task, $dry_run, false);
-                                               //* DEBUG: */ print __FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME().':'; var_dump($test);
+
+                                               // Reset extension name
+                                               EXT_SET_CURR_NAME($ext_name);
+                                               //* DEBUG: */ OUTPUT_HTML(__FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME().':'); var_dump($test);
                                        } // END - if
                                } elseif ($ext_ver != EXT_GET_VERSION()) {
                                        // Ok, update this extension now
@@ -270,15 +260,15 @@ function REGISTER_EXTENSION ($ext_name, $task_id, $dry_run = false, $logout = tr
                $EXT_LOAD_MODE = 'register';
 
                // Remains true if extension registration reports no failures
-               //* DEBUG: */ print __FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME().':'; var_dump($test);
+               //* DEBUG: */ OUTPUT_HTML(__FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME().':'); var_dump($test);
                $test = (($test === true) && (EXT_GET_REPORTS_FAILURE() === false));
-               //* DEBUG: */ print __FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME().':'; var_dump($test);
+               //* DEBUG: */ OUTPUT_HTML(__FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME().':'); var_dump($test);
 
                // Does everthing before wents ok?
                if ($test === true) {
                        // "Dry-run-mode" activated?
                        if ((!$dry_run) && (!EXT_IS_ON_REMOVAL_LIST())) {
-                               //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, " ext_name=".EXT_GET_CURR_NAME());
+                               //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, "ext_name=".EXT_GET_CURR_NAME());
                                // Init SQLs and transfer ext->generic
                                INIT_SQLS();
                                SET_SQLS(GET_EXT_SQLS());
@@ -287,9 +277,9 @@ function REGISTER_EXTENSION ($ext_name, $task_id, $dry_run = false, $logout = tr
                                runFilterChain('pre_extension_installed', array('dry_run' => $dry_run));
 
                                // Register extension
-                               //* DEBUG: */ print __FUNCTION__."[".__LINE__."]:insert=".EXT_GET_CURR_NAME().'/'.EXT_GET_VERSION()." - INSERT!<br />\n";
+                               //* DEBUG: */ OUTPUT_HTML(__FUNCTION__."[".__LINE__."]:insert=".EXT_GET_CURR_NAME().'/'.EXT_GET_VERSION()." - INSERT!<br />");
                                SQL_QUERY_ESC("INSERT INTO `{!_MYSQL_PREFIX!}_extensions` (ext_name, ext_active, ext_version) VALUES ('%s','%s','%s')",
-                               array(EXT_GET_CURR_NAME(), EXT_GET_ALWAYS_ACTIVE(), EXT_GET_VERSION()), __FUNCTION__, __LINE__);
+                                       array(EXT_GET_CURR_NAME(), EXT_GET_ALWAYS_ACTIVE(), EXT_GET_VERSION()), __FUNCTION__, __LINE__);
 
                                // Remove cache file(s) if extension is active
                                runFilterChain('post_extension_installed', array('ext_name' => EXT_GET_CURR_NAME(), 'task_id' => $task_id));
@@ -325,10 +315,10 @@ function REGISTER_EXTENSION ($ext_name, $task_id, $dry_run = false, $logout = tr
                        $ret = false;
                }
        } elseif (($task_id > 0) && (EXT_GET_CURR_NAME() != '')) {
-               //* DEBUG: */ print __FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME()."<br />\n";
+               //* DEBUG: */ OUTPUT_HTML(__FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME()."<br />");
                // Remove task from system when id and extension's name is valid
                SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM `{!_MYSQL_PREFIX!}_task_system` WHERE `id`=%s AND `status`='NEW' LIMIT 1",
-               array(bigintval($task_id)), __FUNCTION__, __LINE__);
+                       array(bigintval($task_id)), __FUNCTION__, __LINE__);
        }
 
        // Is this the sql_patches?
@@ -346,7 +336,7 @@ function REGISTER_EXTENSION ($ext_name, $task_id, $dry_run = false, $logout = tr
        } // END - if
 
        // Return status code
-       //* DEBUG: */ print __FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME()." - LEFT!<br />\n";
+       //* DEBUG: */ OUTPUT_HTML(__FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME()." - LEFT!<br />");
        //* DEBUG: */ var_dump($ret);
        return $ret;
 }
@@ -361,7 +351,10 @@ function EXTENSION_RUN_SQLS ($ext_id, $load_mode) {
        $ext_name = GET_EXT_NAME($ext_id);
 
        // If it is not set then maybe there is no extension for that ID number
-       if ($ext_name == '') return false;
+       if (empty($ext_name)) {
+               // We should fix these all!
+               debug_report_bug(__FUNCTION__ . ': ext_name is empty. ext_id=' . $ext_id);
+       } // END - if
 
        // Set current SQL name
        EXT_SET_CURR_NAME($ext_name);
@@ -385,6 +378,9 @@ function EXTENSION_RUN_SQLS ($ext_id, $load_mode) {
 
        //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, ":SQLs::count=".COUNT_SQLS()."");
        if ((IS_SQLS_VALID() && (COUNT_SQLS() > 0))) {
+               // Run any filters depending on the action here
+               runFilterChain('extension_' . $load_mode, $ext_name);
+
                // Run SQL commands...
                runFilterChain('run_sqls');
 
@@ -392,7 +388,7 @@ function EXTENSION_RUN_SQLS ($ext_id, $load_mode) {
                if ($load_mode == 'remove') {
                        // Delete this extension (remember to remove it from your server *before* you click on welcome!
                        SQL_QUERY_ESC("DELETE LOW_PRIORITY FROM `{!_MYSQL_PREFIX!}_extensions` WHERE `ext_name`='%s' LIMIT 1",
-                       array(EXT_GET_CURR_NAME()), __FUNCTION__, __LINE__);
+                               array(EXT_GET_CURR_NAME()), __FUNCTION__, __LINE__);
                } // END - if
        } // END - if
 
@@ -433,8 +429,8 @@ function EXT_IS_ACTIVE ($ext_name) {
        } elseif (($ext_name == 'cache') || (GET_EXT_VERSION('cache') == '')) {
                //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, "DB! ext_name={$ext_name}");
                // Load from database
-               $result = SQL_QUERY_ESC("SELECT ext_active FROM `{!_MYSQL_PREFIX!}_extensions` WHERE `ext_name`='%s' LIMIT 1",
-               array($ext_name), __FUNCTION__, __LINE__);
+               $result = SQL_QUERY_ESC("SELECT `ext_active` FROM `{!_MYSQL_PREFIX!}_extensions` WHERE `ext_name`='%s' LIMIT 1",
+                       array($ext_name), __FUNCTION__, __LINE__);
 
                // Entry found?
                if (SQL_NUMROWS($result) == 1) {
@@ -455,7 +451,7 @@ function EXT_IS_ACTIVE ($ext_name) {
        }
 
        // Debug message
-       //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, " ext_name={$ext_name},active={$active}");
+       //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, "ext_name={$ext_name},active={$active}");
 
        // Is this extension activated? (For admins we always have active extensions...)
        return ($active == 'Y');
@@ -468,7 +464,7 @@ function GET_EXT_VERSION ($ext_name) {
        // Empty extension name should be fixed!
        if (empty($ext_name)) {
                // Please report this bug!
-               debug_report_bug(__FUNCTION__.": ext_name is empty which is not allowed here.");
+               debug_report_bug(__FUNCTION__ . ': ext_name is empty which is not allowed here.');
        } // END - if
 
        // Extensions are all inactive during installation
@@ -485,15 +481,18 @@ function GET_EXT_VERSION ($ext_name) {
                incrementConfigEntry('cache_hits');
        } elseif (!isCacheInstanceValid()) {
                // Load from database
-               $result = SQL_QUERY_ESC("SELECT ext_version FROM `{!_MYSQL_PREFIX!}_extensions` WHERE `ext_name`='%s' LIMIT 1",
-               array($ext_name), __FUNCTION__, __LINE__);
+               $result = SQL_QUERY_ESC("SELECT `ext_version` FROM `{!_MYSQL_PREFIX!}_extensions` WHERE `ext_name`='%s' LIMIT 1",
+                       array($ext_name), __FUNCTION__, __LINE__);
                //* DEBUG: */ DEBUG_LOG(__FUNCTION__, __LINE__, ": DB - ".SQL_NUMROWS($result)."");
 
                // Is the extension there?
                if (SQL_NUMROWS($result) == 1) {
                        // Load entry
                        list($ext_ver) = SQL_FETCHROW($result);
-               } // END - if
+               } elseif (isDebugModeEnabled()) {
+                       // Not found!
+                       DEBUG_LOG(__FUNCTION__, __LINE__, sprintf(": Cannot find extension %s in database!", $ext_name));
+               }
 
                // Free result
                SQL_FREERESULT($result);
@@ -536,21 +535,38 @@ function EXTENSION_UPDATE ($ext_name, $ext_ver, $dry_run = false) {
 
                // And load SQL queries in order of version history
                for ($idx = ($start + 1); $idx < count($history); $idx++) {
+                       // Set current extension name
+                       //* DEBUG: */ OUTPUT_HTML(__FUNCTION__.'['.__LINE__.':] ext_name='.$ext_name."<br />");
+                       EXT_SET_CURR_NAME($ext_name);
+
                        // Set extension version
                        $GLOBALS['cache_array']['update_ver'][EXT_GET_CURR_NAME()] = $history[$idx];
 
                        // Load again...
                        LOAD_EXTENSION(EXT_GET_CURR_NAME(), 'update', $GLOBALS['cache_array']['update_ver'][EXT_GET_CURR_NAME()], $dry_run);
 
-                       if (EXT_GET_UPDATE_DEPENDS() != '') {
-                               // Is the extension there?
-                               if (GET_EXT_VERSION(EXT_GET_UPDATE_DEPENDS()) != '') {
-                                       // Update another extension first!
-                                       $test = EXTENSION_UPDATE(EXT_GET_UPDATE_DEPENDS(), GET_EXT_VERSION(EXT_GET_UPDATE_DEPENDS()), $dry_run);
-                               } else {
-                                       // Register new extension
-                                       $test = REGISTER_EXTENSION(EXT_GET_UPDATE_DEPENDS(), 0, $dry_run, false);
-                               }
+                       // Get all depencies
+                       $depencies = EXT_GET_UPDATE_DEPENDS();
+
+                       // Nothing to apply?
+                       if (count($depencies) > 0) {
+                               // Apply all extension depencies
+                               foreach ($depencies as $ext_depend) {
+                                       // Set it as current
+                                       EXT_SET_CURR_NAME($ext_depend);
+
+                                       // Is the extension there?
+                                       if (GET_EXT_VERSION($ext_depend) != '') {
+                                               // Update another extension first!
+                                               $test = EXTENSION_UPDATE($ext_depend, GET_EXT_VERSION($ext_depend), $dry_run);
+                                       } else {
+                                               // Register new extension
+                                               $test = REGISTER_EXTENSION($ext_depend, 0, $dry_run, false);
+                                       }
+                               } // END - foreach
+
+                               // Set name back
+                               EXT_SET_CURR_NAME($ext_name);
                        } // END - if
 
                        // Add notes
@@ -666,10 +682,12 @@ function GET_EXT_NAME ($ext_id) {
        } elseif (!EXT_IS_ACTIVE('cache')) {
                // Load from database
                $result = SQL_QUERY_ESC("SELECT ext_name FROM `{!_MYSQL_PREFIX!}_extensions` WHERE `id`=%s LIMIT 1",
-               array(bigintval($ext_id)), __FUNCTION__, __LINE__);
+                       array(bigintval($ext_id)), __FUNCTION__, __LINE__);
                list($ret) = SQL_FETCHROW($result);
                SQL_FREERESULT($result);
        }
+
+       // Return the extension name
        return $ret;
 }
 
@@ -686,7 +704,7 @@ function GET_EXT_ID ($ext_name) {
        } elseif (!EXT_IS_ACTIVE('cache')) {
                // Load from database
                $result = SQL_QUERY_ESC("SELECT `id` FROM `{!_MYSQL_PREFIX!}_extensions` WHERE `ext_name`='%s' LIMIT 1",
-               array($ext_name), __FUNCTION__, __LINE__);
+                       array($ext_name), __FUNCTION__, __LINE__);
                list($ret) = SQL_FETCHROW($result);
                SQL_FREERESULT($result);
        }
@@ -754,8 +772,7 @@ function CREATE_EXTENSION_UPDATE_TASK ($admin_id, $ext_name, $ext_ver, $notes) {
                // Check if task is not there
                if (DETERMINE_TASK_ID_BY_SUBJECT($subject) == 0) {
                        // Task not created so it's a brand-new extension which we need to register and create a task for!
-                       SQL_QUERY_ESC("INSERT INTO `{!_MYSQL_PREFIX!}_task_system` (assigned_admin, userid, status, task_type, subject, text, task_created) VALUES ('%s','0','NEW','EXTENSION_UPDATE','%s','%s', UNIX_TIMESTAMP())",
-                       array($admin_id, $subject, $notes), __FUNCTION__, __LINE__);
+                       createNewTask($subject, $notes, 'EXTENSION_UPDATE', 0, $admin_id);
                } // END - if
        } // END - if
 }
@@ -764,34 +781,27 @@ function CREATE_EXTENSION_UPDATE_TASK ($admin_id, $ext_name, $ext_ver, $notes) {
 function CREATE_NEW_EXTENSION_TASK ($admin_id, $subject, $ext) {
        // Not installed and do we have created a task for the admin?
        if ((DETERMINE_TASK_ID_BY_SUBJECT($subject) == 0) && (GET_EXT_VERSION($ext) == '')) {
+               // Set default message if ext-foo is missing
+               $message = sprintf(getMessage('ADMIN_EXT_TEXT_FILE_MISSING'), $ext);
+
                // Template file
                $tpl = sprintf("%stemplates/%s/html/ext/ext_%s.tpl",
-               constant('PATH'),
-               getLanguage(),
-               $ext
+                       constant('PATH'),
+                       getLanguage(),
+                       $ext
                );
 
-               // Set default message if ext-foo is missing
-               $msg = sprintf(getMessage('ADMIN_EXT_TEXT_FILE_MISSING'), $ext);
-
                // Load text for task if found
                if (isFileReadable($tpl)) {
                        // Load extension's own text template (HTML!)
-                       $msg = LOAD_TEMPLATE('ext_' . $ext, true);
+                       $message = LOAD_TEMPLATE('ext_' . $ext, true);
                } else {
                        // Write this in debug.log as well
-                       DEBUG_LOG(__FUNCTION__, __LINE__, $msg);
+                       DEBUG_LOG(__FUNCTION__, __LINE__, $message);
                }
 
                // Task not created so it's a brand-new extension which we need to register and create a task for!
-               SQL_QUERY_ESC("INSERT INTO `{!_MYSQL_PREFIX!}_task_system` (assigned_admin, userid, status, task_type, subject, text, task_created)
-VALUES (%s, 0, 'NEW', 'EXTENSION', '%s', '%s', UNIX_TIMESTAMP())",
-               array(
-               $admin_id,
-               $subject,
-               smartAddSlashes($msg),
-               ),  __FUNCTION__, __LINE__, true, false, false
-               );
+               createNewTask($subject, $message, 'EXTENSION_UPDATE', 0, $admin_id, false);
        } // END - if
 }
 
@@ -803,13 +813,7 @@ function CREATE_EXTENSION_DEACTIVATION_TASK ($ext) {
        // Not installed and do we have created a task for the admin?
        if ((DETERMINE_TASK_ID_BY_SUBJECT($subject) == 0) && (GET_EXT_VERSION($ext) != '')) {
                // Task not created so add it
-               SQL_QUERY_ESC("INSERT INTO `{!_MYSQL_PREFIX!}_task_system` (assigned_admin, userid, status, task_type, subject, text, task_created)
-VALUES (0, 0, 'NEW', 'EXTENSION_DEACTIVATION', '%s', '%s', UNIX_TIMESTAMP())",
-               array(
-               $subject,
-               SQL_ESCAPE(LOAD_TEMPLATE('task_ext_deactivated', true, $ext)),
-               ),  __FUNCTION__, __LINE__, true, false
-               );
+               createNewTask($subject, SQL_ESCAPE(LOAD_TEMPLATE('task_ext_deactivated', true, $ext)), 'EXTENSION_DEACTIVATION');
        } // END - if
 }
 
@@ -835,8 +839,8 @@ function MODULE_HAS_MENU ($mod, $forceDb = false) {
                }
        } elseif ((GET_EXT_VERSION('sql_patches') >= '0.3.6') && ((!EXT_IS_ACTIVE('cache')) || ($forceDb === true))) {
                // Check database for entry
-               $result = SQL_QUERY_ESC("SELECT has_menu FROM `{!_MYSQL_PREFIX!}_mod_reg` WHERE `module`='%s' LIMIT 1",
-               array($mod), __FUNCTION__, __LINE__);
+               $result = SQL_QUERY_ESC("SELECT `has_menu` FROM `{!_MYSQL_PREFIX!}_mod_reg` WHERE `module`='%s' LIMIT 1",
+                       array($mod), __FUNCTION__, __LINE__);
 
                // Entry found?
                if (SQL_NUMROWS($result) == 1) {
@@ -858,7 +862,7 @@ function MODULE_HAS_MENU ($mod, $forceDb = false) {
        }
 
        // Return status
-       //* DEBUG: */ print __FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME().':'; var_dump($ret);
+       //* DEBUG: */ OUTPUT_HTML(__FUNCTION__."[".__LINE__."]:currName=".EXT_GET_CURR_NAME().':'; var_dump($ret));
        return $ret;
 }
 
@@ -868,8 +872,8 @@ function DETERMINE_EXTENSION_TASK_ID ($ext_name) {
        $task_id = 0;
 
        // Search for extension task's id
-       $result = SQL_QUERY_ESC("SELECT `id` FROM `{!_MYSQL_PREFIX!}_task_system` WHERE task_type='EXTENSION' AND subject='[%s:]' LIMIT 1",
-       array($ext_name), __FUNCTION__, __LINE__);
+       $result = SQL_QUERY_ESC("SELECT `id` FROM `{!_MYSQL_PREFIX!}_task_system` WHERE `task_type`='EXTENSION' AND `subject`='[%s:]' LIMIT 1",
+               array($ext_name), __FUNCTION__, __LINE__);
 
        // Entry found?
        if (SQL_NUMROWS($result) == 1) {
@@ -890,8 +894,8 @@ function DETERMINE_TASK_ID_BY_SUBJECT ($subject) {
        $task_id = 0;
 
        // Search for task id
-       $result = SQL_QUERY_ESC("SELECT `id` FROM `{!_MYSQL_PREFIX!}_task_system` WHERE subject LIKE '%s%%' LIMIT 1",
-       array($subject), __FUNCTION__, __LINE__);
+       $result = SQL_QUERY_ESC("SELECT `id` FROM `{!_MYSQL_PREFIX!}_task_system` WHERE `subject` LIKE '%s%%' LIMIT 1",
+               array($subject), __FUNCTION__, __LINE__);
 
        // Entry found?
        if (SQL_NUMROWS($result) == 1) {
@@ -913,7 +917,6 @@ function ADD_EXTENSION_NOTES ($ver) {
 
        // Is do we have verbose output enabled?
        if ((getConfig('verbose_sql') == 'Y') || (!EXT_IS_ACTIVE('sql_patches'))) {
-
                // Update notes found?
                if (EXT_GET_UPDATE_NOTES() != '') {
                        // Update notes found
@@ -1251,11 +1254,23 @@ function EXT_GET_REMOVAL_LIST () {
 // Redirects if the provided extension is not installed
 function redirectOnUninstalledExtension ($ext_name) {
        // So is the extension there?
-       if (!EXT_IS_ACTIVE($ext_name)) {
+       if ((!isExtensionInstalled($ext_name)) || (!EXT_IS_ACTIVE($ext_name))) {
                // Redirect to index
                redirectToUrl('modules.php?module=index&amp;msg=' . getCode('EXTENSION_PROBLEM') . '&amp;ext=' . $ext_name);
        } // END - if
 }
 
+// Determines wether the given extension is installed
+function isExtensionInstalled ($ext_name) {
+       // Default is not installed
+       $isInstalled = false;
+
+       // Check cache ext_version
+       $isInstalled = isset($GLOBALS['cache_array']['extensions']['ext_version'][$ext_name]);
+
+       // Return status
+       return $isInstalled;
+}
+
 //
 ?>