2 files changed, 92 insertions, 0 deletions
diff --git a/core/Command/Db/ConvertMysqlToMB4.php b/core/Command/Db/ConvertMysqlToMB4.php
new file mode 100644
index 00000000000..d456db13b11
--- /dev/null
+++ b/core/Command/Db/ConvertMysqlToMB4.php
@@ -0,0 +1,91 @@
+<?php
+/**
+ * @author Thomas Müller <thomas.mueller@tmit.eu>
+ *
+ * @copyright Copyright (c) 2017, ownCloud GmbH
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OC\Core\Command\Db;
+
+use Doctrine\DBAL\Platforms\MySqlPlatform;
+use OC\Migration\ConsoleOutput;
+use OC\Repair\Collation;
+use OCP\IConfig;
+use OCP\IDBConnection;
+use OCP\ILogger;
+use OCP\IURLGenerator;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class ConvertMysqlToMB4 extends Command {
+	/** @var IConfig */
+	private $config;
+
+	/** @var IDBConnection */
+	private $connection;
+
+	/** @var IURLGenerator */
+	private $urlGenerator;
+
+	/** @var ILogger */
+	private $logger;
+
+	/**
+	 * @param IConfig $config
+	 * @param IDBConnection $connection
+	 * @param IURLGenerator $urlGenerator
+	 * @param ILogger $logger
+	 */
+	public function __construct(IConfig $config, IDBConnection $connection, IURLGenerator $urlGenerator, ILogger $logger) {
+		$this->config = $config;
+		$this->connection = $connection;
+		$this->urlGenerator = $urlGenerator;
+		$this->logger = $logger;
+		parent::__construct();
+	}
+
+	protected function configure() {
+		$this
+			->setName('db:convert-mysql-charset')
+			->setDescription('Convert charset of MySQL/MariaDB to use utf8mb4');
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output) {
+		if (!$this->connection->getDatabasePlatform() instanceof MySqlPlatform) {
+			$output->writeln("This command is only valid for MySQL/MariaDB databases.");
+			return 1;
+		}
+
+		if (!$this->connection->supports4ByteText()) {
+			$url = $this->urlGenerator->linkToDocs('admin-db-conversion');
+			$output->writeln("The database is not properly setup to use the charset utf8mb4.");
+			$output->writeln("Also check that the setting 'mysql.utf8mb4' is set to true in the config.php.");
+			$output->writeln("For more information please read the documentation at $url");
+			return 1;
+		}
+
+		// enable charset
+		$this->config->setSystemValue('mysql.utf8mb4', true);
+
+		// run conversion
+		$coll = new Collation($this->config, $this->logger, $this->connection, false);
+		$coll->run(new ConsoleOutput($output));
+
+		return 0;
+	}
+}
diff --git a/core/register_command.php b/core/register_command.php
index 6a8ab2bebe2..629fd183b06 100644
--- a/core/register_command.php
+++ b/core/register_command.php
@@ -84,6 +84,7 @@ if (\OC::$server->getConfig()->getSystemValue('installed', false)) {
 
 	$application->add(new OC\Core\Command\Db\GenerateChangeScript());
 	$application->add(new OC\Core\Command\Db\ConvertType(\OC::$server->getConfig(), new \OC\DB\ConnectionFactory(\OC::$server->getSystemConfig())));
+	$application->add(new OC\Core\Command\Db\ConvertMysqlToMB4(\OC::$server->getConfig(), \OC::$server->getDatabaseConnection(), \OC::$server->getURLGenerator(), \OC::$server->getLogger()));
 
 	$application->add(new OC\Core\Command\Encryption\Disable(\OC::$server->getConfig()));
 	$application->add(new OC\Core\Command\Encryption\Enable(\OC::$server->getConfig(), \OC::$server->getEncryptionManager()));