Add occ command to enable and disable single user mode

core/command/maintenance/singleuser.php

@@ -0,0 +1,51 @@
+<?php
+/**
+ * Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\Core\Command\Maintenance;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class SingleUser extends Command {
+
+	protected function configure() {
+		$this
+			->setName('maintenance:singleuser')
+			->setDescription('set single user mode')
+			->addOption(
+				'on',
+				null,
+				InputOption::VALUE_NONE,
+				'enable single user mode'
+			)
+			->addOption(
+				'off',
+				null,
+				InputOption::VALUE_NONE,
+				'disable single user mode'
+			);
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output) {
+		if ($input->getOption('on')) {
+			\OC_Config::setValue('singleuser', true);
+			$output->writeln('Single user mode enabled');
+		} elseif ($input->getOption('off')) {
+			\OC_Config::setValue('singleuser', false);
+			$output->writeln('Single user mode disabled');
+		} else {
+			if (\OC_Config::getValue('singleuser', false)) {
+				$output->writeln('Single user mode is currently enabled');
+			} else {
+				$output->writeln('Single user mode is currently disabled');
+			}
+		}
+	}
+}

core/register_command.php

@@ -10,3 +10,4 @@
 $application->add(new OC\Core\Command\Status);
 $application->add(new OC\Core\Command\Db\GenerateChangeScript());
 $application->add(new OC\Core\Command\Upgrade());
+$application->add(new OC\Core\Command\Maintenance\SingleUser());