fix(db): Fix md5 for oracle >= 20

Signed-off-by: Joas Schilling <coding@schilljs.com>

lib/private/DB/Connection.php

@@ -13,6 +13,7 @@ use Doctrine\DBAL\Cache\QueryCacheProfile;
 use Doctrine\DBAL\Configuration;
 use Doctrine\DBAL\Connections\PrimaryReadReplicaConnection;
 use Doctrine\DBAL\Driver;
+use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
 use Doctrine\DBAL\Exception;
 use Doctrine\DBAL\Exception\ConnectionLost;
 use Doctrine\DBAL\Platforms\MySQLPlatform;
@@ -749,4 +750,13 @@ class Connection extends PrimaryReadReplicaConnection {
 			throw new \Exception('Database ' . $platform::class . ' not supported');
 		}
 	}
+
+	/**
+	 * @internal Should only be used inside the QueryBuilder, ExpressionBuilder and FunctionBuilder
+	 * All apps and API code should not need this and instead use provided functionality from the above.
+	 */
+	public function getServerVersion(): string {
+		/** @var ServerInfoAwareConnection $this->_conn */
+		return $this->_conn->getServerVersion();
+	}
 }

lib/private/DB/ConnectionAdapter.php

@@ -232,4 +232,12 @@ class ConnectionAdapter implements IDBConnection {
 	public function getDatabaseProvider(): string {
 		return $this->inner->getDatabaseProvider();
 	}
+
+	/**
+	 * @internal Should only be used inside the QueryBuilder, ExpressionBuilder and FunctionBuilder
+	 * All apps and API code should not need this and instead use provided functionality from the above.
+	 */
+	public function getServerVersion(): string {
+		return $this->inner->getServerVersion();
+	}
 }

lib/private/DB/QueryBuilder/FunctionBuilder/FunctionBuilder.php

@@ -5,6 +5,7 @@
  */
 namespace OC\DB\QueryBuilder\FunctionBuilder;
 
+use OC\DB\Connection;
 use OC\DB\QueryBuilder\QueryFunction;
 use OC\DB\QueryBuilder\QuoteHelper;
 use OCP\DB\QueryBuilder\IFunctionBuilder;
@@ -13,7 +14,7 @@ use OCP\DB\QueryBuilder\IQueryFunction;
 use OCP\IDBConnection;
 
 class FunctionBuilder implements IFunctionBuilder {
-	/** @var IDBConnection */
+	/** @var IDBConnection|Connection */
 	protected $connection;
 
 	/** @var IQueryBuilder */

lib/private/DB/QueryBuilder/FunctionBuilder/OCIFunctionBuilder.php

@@ -12,6 +12,9 @@ use OCP\DB\QueryBuilder\IQueryFunction;
 
 class OCIFunctionBuilder extends FunctionBuilder {
 	public function md5($input): IQueryFunction {
+		if (version_compare($this->connection->getServerVersion(), '20', '>=')) {
+			return new QueryFunction('LOWER(STANDARD_HASH(' . $this->helper->quoteColumnName($input) . ", 'MD5'))");
+		}
 		return new QueryFunction('LOWER(DBMS_OBFUSCATION_TOOLKIT.md5 (input => UTL_RAW.cast_to_raw(' . $this->helper->quoteColumnName($input) .')))');
 	}