nextcloud-server/apps/files_external/lib/Lib/Backend/AmazonS3.php

<?php
/**
 * @copyright Copyright (c) 2016, ownCloud, Inc.
 *
 * @author Morris Jobke <hey@morrisjobke.de>
 * @author Robin Appelman <robin@icewind.nl>
 * @author Robin McCorkell <robin@mccorkell.me.uk>
 * @author Roeland Jago Douma <roeland@famdouma.nl>
 *
 * @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 OCA\Files_External\Lib\Backend;

use OCA\Files_External\Lib\Auth\AmazonS3\AccessKey;
use OCA\Files_External\Lib\Auth\AuthMechanism;
use OCA\Files_External\Lib\DefinitionParameter;
use OCA\Files_External\Lib\LegacyDependencyCheckPolyfill;
use OCP\IL10N;

class AmazonS3 extends Backend {
	use LegacyDependencyCheckPolyfill;

	public function __construct(IL10N $l, AccessKey $legacyAuth) {
		$this
			->setIdentifier('amazons3')
			->addIdentifierAlias('\OC\Files\Storage\AmazonS3') // legacy compat
			->setStorageClass('\OCA\Files_External\Lib\Storage\AmazonS3')
			->setText($l->t('Amazon S3'))
			->addParameters([
				new DefinitionParameter('bucket', $l->t('Bucket')),
				(new DefinitionParameter('hostname', $l->t('Hostname')))
					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
				(new DefinitionParameter('port', $l->t('Port')))
					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
				(new DefinitionParameter('region', $l->t('Region')))
					->setFlag(DefinitionParameter::FLAG_OPTIONAL),
				(new DefinitionParameter('use_ssl', $l->t('Enable SSL')))
					->setType(DefinitionParameter::VALUE_BOOLEAN),
				(new DefinitionParameter('use_path_style', $l->t('Enable Path Style')))
					->setType(DefinitionParameter::VALUE_BOOLEAN),
				(new DefinitionParameter('legacy_auth', $l->t('Legacy (v2) authentication')))
					->setType(DefinitionParameter::VALUE_BOOLEAN),
			])
			->addAuthScheme(AccessKey::SCHEME_AMAZONS3_ACCESSKEY)
			->addAuthScheme(AuthMechanism::SCHEME_NULL)
			->setLegacyAuthMechanism($legacyAuth)
		;
	}
}