nextcloud-server/apps/dav/lib/Connector/Sabre/DummyGetResponsePlugin.php

<?php

/**
 * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
 * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
 * SPDX-License-Identifier: AGPL-3.0-only
 */
namespace OCA\DAV\Connector\Sabre;

use Sabre\DAV\Server;
use Sabre\HTTP\RequestInterface;
use Sabre\HTTP\ResponseInterface;

/**
 * Class DummyGetResponsePlugin is a plugin used to not show a "Not implemented"
 * error to clients that rely on verifying the functionality of the Nextcloud
 * WebDAV backend using a simple GET to /.
 *
 * This is considered a legacy behaviour and implementers should consider sending
 * a PROPFIND request instead to verify whether the WebDAV component is working
 * properly.
 *
 * FIXME: Remove once clients are all compliant.
 *
 * @package OCA\DAV\Connector\Sabre
 */
class DummyGetResponsePlugin extends \Sabre\DAV\ServerPlugin {
	protected ?Server $server = null;

	/**
	 * @param \Sabre\DAV\Server $server
	 * @return void
	 */
	public function initialize(\Sabre\DAV\Server $server) {
		$this->server = $server;
		$this->server->on('method:GET', [$this, 'httpGet'], 200);
	}

	/**
	 * @param RequestInterface $request
	 * @param ResponseInterface $response
	 * @return false
	 */
	public function httpGet(RequestInterface $request, ResponseInterface $response) {
		$string = 'This is the WebDAV interface. It can only be accessed by ' .
			'WebDAV clients such as the Nextcloud desktop sync client.';
		$stream = fopen('php://memory', 'r+');
		fwrite($stream, $string);
		rewind($stream);

		$response->setStatus(200);
		$response->setBody($stream);

		return false;
	}
}