Lock/Unlock the TYPO3 backend

This takes the Commands from typo3_console from @helhum. Is on
hold as long we don't have a solution of the focus of both projects.

Resolves: #22

Author: Stefano Kowalke

Classes/Command/BackendApiCommandController.php

@@ -0,0 +1,71 @@
+<?php
+namespace Etobi\CoreAPI\Command;
+
+/***************************************************************
+ *  Copyright notice
+ *
+ *  (c) 2014 Helmut Hummel <[email protected]>
+ *  All rights reserved
+ *
+ *  This script is part of the TYPO3 project. The TYPO3 project is
+ *  free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  The GNU General Public License can be found at
+ *  http://www.gnu.org/copyleft/gpl.html.
+ *  A copy is found in the text file GPL.txt and important notices to the license
+ *  from the author is found in LICENSE.txt distributed with these scripts.
+ *
+ *
+ *  This script is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  This copyright notice MUST APPEAR in all copies of the script!
+ ***************************************************************/
+use TYPO3\CMS\Extbase\Mvc\Controller\CommandController;
+
+/**
+ * API Command Controller
+ */
+class BackendApiCommandController extends CommandController {
+	/**
+	 * Locks backend access for all users by writing a lock file that is checked when the backend is accessed.
+	 *
+	 * @param string $redirectUrl URL to redirect to when the backend is accessed
+	 */
+	public function lockCommand($redirectUrl = NULL) {
+		if (@is_file((PATH_typo3conf . 'LOCK_BACKEND'))) {
+			$this->outputLine('A lockfile already exists. Overwriting it...');
+		}
+
+		\TYPO3\CMS\Core\Utility\GeneralUtility::writeFile(PATH_typo3conf . 'LOCK_BACKEND', (string)$redirectUrl);
+
+		if ($redirectUrl === NULL) {
+			$this->outputLine('Wrote lock file to \'typo3conf/LOCK_BACKEND\'');
+		} else {
+			$this->outputLine('Wrote lock file to \'typo3conf/LOCK_BACKEND\' with instruction to redirect to: \'' . $redirectUrl . '\'');
+		}
+	}
+
+	/**
+	 * Unlocks the backend access by deleting the lock file
+	 */
+	public function unlockCommand() {
+		if (@is_file((PATH_typo3conf . 'LOCK_BACKEND'))) {
+			unlink(PATH_typo3conf . 'LOCK_BACKEND');
+			if (@is_file((PATH_typo3conf . 'LOCK_BACKEND'))) {
+				$this->outputLine('ERROR: Could not remove lock file \'typo3conf/LOCK_BACKEND\'!');
+				$this->sendAndExit(1);
+			} else {
+				$this->outputLine('Removed lock file \'typo3conf/LOCK_BACKEND\'');
+			}
+		} else {
+			$this->outputLine('No lock file \'typo3conf/LOCK_BACKEND\' was found, hence no lock could be removed.');
+			$this->sendAndExit(2);
+		}
+	}
+}

ext_autoload.php

@@ -4,6 +4,7 @@
 $extensionClassesPath = $extensionPath . 'Classes/';
 
 return array(
+	'Etobi\CoreAPI\Command\BackendApiCommandController' => $extensionClassesPath . 'Command/BackendApiCommandController.php',
 	'Etobi\CoreAPI\Command\DatabaseApiCommandController' => $extensionClassesPath . 'Command/DatabaseApiCommandController.php',
 	'Etobi\CoreAPI\Command\SiteApiCommandController' => $extensionClassesPath . 'Command/SiteApiCommandController.php',
 	'Etobi\CoreAPI\Command\CacheApiCommandController' => $extensionClassesPath . 'Command/CacheApiCommandController.php',

ext_localconf.php

@@ -3,6 +3,7 @@
 
 if (TYPO3_MODE === 'BE') {
 		// Register commands
+	$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['extbase']['commandControllers'][] = 'Etobi\CoreAPI\Command\BackendApiCommandController';
 	$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['extbase']['commandControllers'][] = 'Etobi\CoreAPI\Command\DatabaseApiCommandController';
 	$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['extbase']['commandControllers'][] = 'Etobi\CoreAPI\Command\CacheApiCommandController';
 	$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['extbase']['commandControllers'][] = 'Etobi\CoreAPI\Command\SiteApiCommandController';