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63 lines
1.9 KiB
PHP
63 lines
1.9 KiB
PHP
<?php
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/**
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* SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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namespace OCA\DAV\Connector\Sabre;
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use Sabre\DAV\CorePlugin;
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use Sabre\DAV\FS\Directory;
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use Sabre\DAV\ServerPlugin;
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use Sabre\DAV\Tree;
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use Sabre\HTTP\RequestInterface;
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use Sabre\HTTP\ResponseInterface;
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class AnonymousOptionsPlugin extends ServerPlugin {
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/**
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* @var \Sabre\DAV\Server
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*/
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private $server;
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/**
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* @param \Sabre\DAV\Server $server
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* @return void
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*/
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public function initialize(\Sabre\DAV\Server $server) {
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$this->server = $server;
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// before auth
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$this->server->on('beforeMethod:*', [$this, 'handleAnonymousOptions'], 9);
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}
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/**
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* @return bool
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*/
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public function isRequestInRoot($path) {
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return $path === '' || (is_string($path) && !str_contains($path, '/'));
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}
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/**
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* @throws \Sabre\DAV\Exception\Forbidden
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* @return bool
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*/
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public function handleAnonymousOptions(RequestInterface $request, ResponseInterface $response) {
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$isOffice = preg_match('/Microsoft Office/i', $request->getHeader('User-Agent') ?? '');
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$emptyAuth = $request->getHeader('Authorization') === null
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|| $request->getHeader('Authorization') === ''
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|| trim($request->getHeader('Authorization')) === 'Bearer';
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$isAnonymousOfficeOption = $request->getMethod() === 'OPTIONS' && $isOffice && $emptyAuth;
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$isOfficeHead = $request->getMethod() === 'HEAD' && $isOffice && $emptyAuth;
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if ($isAnonymousOfficeOption || $isOfficeHead) {
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/** @var CorePlugin $corePlugin */
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$corePlugin = $this->server->getPlugin('core');
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// setup a fake tree for anonymous access
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$this->server->tree = new Tree(new Directory(''));
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$corePlugin->httpOptions($request, $response);
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$this->server->emit('afterMethod:*', [$request, $response]);
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$this->server->emit('afterMethod:OPTIONS', [$request, $response]);
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$this->server->sapi->sendResponse($response);
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return false;
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}
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}
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}
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