Add modular admin controller

admin.php

@@ -0,0 +1,50 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+check_status(ACCESS_ADMINISTRATOR);
+
+require_once(BRATONIEN_TOOLS_PATH . 'include/tool_registry.inc.php');
+
+$tools = bratonien_tools_get_tools();
+$messages = array();
+$errors = array();
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['bratonien_tool']))
+{
+  check_pwg_token();
+
+  $tool_id = (string) $_POST['bratonien_tool'];
+
+  if (!isset($tools[$tool_id]))
+  {
+    $errors[] = 'Unbekanntes Werkzeug.';
+  }
+  elseif (!empty($tools[$tool_id]['handler']) && is_callable($tools[$tool_id]['handler']))
+  {
+    try
+    {
+      $result = call_user_func($tools[$tool_id]['handler']);
+      if (!empty($result['message']))
+      {
+        $messages[] = $result['message'];
+      }
+    }
+    catch (Throwable $e)
+    {
+      $errors[] = 'Werkzeug fehlgeschlagen: ' . $e->getMessage();
+    }
+  }
+}
+
+$template->assign(array(
+  'BRATONIEN_TOOLS' => $tools,
+  'BRATONIEN_MESSAGES' => $messages,
+  'BRATONIEN_ERRORS' => $errors,
+  'PWG_TOKEN' => get_pwg_token(),
+));
+
+$template->set_filename('plugin_admin_content', BRATONIEN_TOOLS_PATH . 'template/admin.tpl');
+$template->assign_var_from_handle('ADMIN_CONTENT', 'plugin_admin_content');