138 lines
3.3 KiB
PHP
138 lines
3.3 KiB
PHP
<?php
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/**
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* @copyright 2018, Roeland Jago Douma <roeland@famdouma.nl>
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*
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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declare(strict_types=1);
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namespace OCP\AppFramework;
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use OCP\IRequest;
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use OCP\ISession;
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/**
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* Base controller for public shares
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*
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* It will verify if the user is properly authenticated to the share. If not a 404
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* is thrown by the PublicShareMiddleware.
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*
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* Use this for example for a controller that is not to be called via a webbrowser
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* directly. For example a PublicPreviewController. As this is not meant to be
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* called by a user direclty.
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*
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* To show an auth page extend the AuthPublicShareController
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*
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* @since 14.0.0
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*/
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abstract class PublicShareController extends Controller {
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/** @var ISession */
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protected $session;
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/** @var string */
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private $token;
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/**
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* @since 14.0.0
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*/
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public function __construct(string $appName,
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IRequest $request,
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ISession $session) {
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parent::__construct($appName, $request);
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$this->session = $session;
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}
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/**
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* Middleware set the token for the request
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*
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* @since 14.0.0
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*/
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final public function setToken(string $token) {
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$this->token = $token;
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}
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/**
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* Get the token for this request
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*
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* @since 14.0.0
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*/
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public function getToken(): string {
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return $this->token;
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}
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/**
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* Get a hash of the password for this share
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*
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* To ensure access is blocked when the password to a share is changed we store
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* a hash of the password for this token.
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*
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* @since 14.0.0
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*/
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abstract protected function getPasswordHash(): string;
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/**
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* Is the provided token a valid token
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*
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* This function is already called from the middleware directly after setting the token.
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*
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* @since 14.0.0
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*/
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abstract public function isValidToken(): bool;
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/**
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* Is a share with this token password protected
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*
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* @since 14.0.0
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*/
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abstract protected function isPasswordProtected(): bool;
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/**
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* Check if a share is authenticated or not
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*
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* @since 14.0.0
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*/
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final public function isAuthenticated(): bool {
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// Always authenticated against non password protected shares
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if (!$this->isPasswordProtected()) {
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return true;
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}
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// If we are authenticated properly
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if ($this->session->get('public_link_authenticated_token') === $this->getToken() &&
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$this->session->get('public_link_authenticated_password_hash') === $this->getPasswordHash()) {
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return true;
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}
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// Fail by default if nothing matches
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return false;
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}
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/**
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* Function called if the share is not found.
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*
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* You can use this to do some logging for example
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*
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* @since 14.0.0
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*/
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public function shareNotFound() {
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}
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}
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