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102 lines
3 KiB
PHP
102 lines
3 KiB
PHP
<?php
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/**
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* SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
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* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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namespace OCA\DAV\Connector;
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use OCA\DAV\Connector\Sabre\PublicAuth;
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use OCP\Defaults;
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use OCP\IRequest;
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use OCP\ISession;
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use OCP\Security\Bruteforce\IThrottler;
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use OCP\Share\Exceptions\ShareNotFound;
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use OCP\Share\IManager;
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use OCP\Share\IShare;
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use Sabre\DAV\Auth\Backend\AbstractBasic;
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/**
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* Class PublicAuth
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*
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* @package OCA\DAV\Connector
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*/
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class LegacyPublicAuth extends AbstractBasic {
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private const BRUTEFORCE_ACTION = 'legacy_public_webdav_auth';
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private ?IShare $share = null;
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public function __construct(
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private IRequest $request,
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private IManager $shareManager,
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private ISession $session,
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private IThrottler $throttler,
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) {
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// setup realm
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$defaults = new Defaults();
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$this->realm = $defaults->getName() ?: 'Nextcloud';
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}
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/**
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* Validates a username and password
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*
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* This method should return true or false depending on if login
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* succeeded.
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*
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* @param string $username
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* @param string $password
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*
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* @return bool
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* @throws \Sabre\DAV\Exception\NotAuthenticated
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*/
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protected function validateUserPass($username, $password) {
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$this->throttler->sleepDelayOrThrowOnMax($this->request->getRemoteAddress(), self::BRUTEFORCE_ACTION);
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try {
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$share = $this->shareManager->getShareByToken($username);
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} catch (ShareNotFound $e) {
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$this->throttler->registerAttempt(self::BRUTEFORCE_ACTION, $this->request->getRemoteAddress());
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return false;
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}
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$this->share = $share;
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\OC_User::setIncognitoMode(true);
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// check if the share is password protected
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if ($share->getPassword() !== null) {
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if ($share->getShareType() === IShare::TYPE_LINK
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|| $share->getShareType() === IShare::TYPE_EMAIL
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|| $share->getShareType() === IShare::TYPE_CIRCLE) {
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if ($this->shareManager->checkPassword($share, $password)) {
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return true;
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} elseif ($this->session->exists(PublicAuth::DAV_AUTHENTICATED)
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&& $this->session->get(PublicAuth::DAV_AUTHENTICATED) === $share->getId()) {
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return true;
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} else {
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if (in_array('XMLHttpRequest', explode(',', $this->request->getHeader('X-Requested-With')))) {
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// do not re-authenticate over ajax, use dummy auth name to prevent browser popup
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http_response_code(401);
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header('WWW-Authenticate: DummyBasic realm="' . $this->realm . '"');
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throw new \Sabre\DAV\Exception\NotAuthenticated('Cannot authenticate over ajax calls');
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}
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$this->throttler->registerAttempt(self::BRUTEFORCE_ACTION, $this->request->getRemoteAddress());
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return false;
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}
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} elseif ($share->getShareType() === IShare::TYPE_REMOTE) {
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return true;
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} else {
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$this->throttler->registerAttempt(self::BRUTEFORCE_ACTION, $this->request->getRemoteAddress());
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return false;
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}
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}
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return true;
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}
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public function getShare(): IShare {
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assert($this->share !== null);
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return $this->share;
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}
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}
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