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149 lines
3.8 KiB
149 lines
3.8 KiB
<?php
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/**
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* @copyright Copyright (c) 2017 Robin Appelman <robin@icewind.nl>
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*
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* @author Robin Appelman <robin@icewind.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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namespace OC\Remote;
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use OC\Remote\Api\NotFoundException;
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use OCP\Http\Client\IClientService;
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use OCP\ICache;
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use OCP\Remote\IInstance;
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/**
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* Provides some basic info about a remote Nextcloud instance
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*/
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class Instance implements IInstance {
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/** @var string */
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private $url;
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/** @var ICache */
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private $cache;
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/** @var IClientService */
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private $clientService;
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/** @var array|null */
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private $status;
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/**
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* @param string $url
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* @param ICache $cache
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* @param IClientService $clientService
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*/
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public function __construct($url, ICache $cache, IClientService $clientService) {
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$url = str_replace('https://', '', $url);
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$this->url = str_replace('http://', '', $url);
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$this->cache = $cache;
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$this->clientService = $clientService;
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}
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/**
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* @return string The url of the remote server without protocol
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*/
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public function getUrl() {
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return $this->url;
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}
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/**
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* @return string The of of the remote server with protocol
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*/
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public function getFullUrl() {
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return $this->getProtocol() . '://' . $this->getUrl();
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}
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/**
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* @return string The full version string in '13.1.2.3' format
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*/
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public function getVersion() {
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$status = $this->getStatus();
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return $status['version'];
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}
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/**
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* @return string 'http' or 'https'
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*/
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public function getProtocol() {
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$status = $this->getStatus();
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return $status['protocol'];
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}
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/**
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* Check that the remote server is installed and not in maintenance mode
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*
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* @return bool
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*/
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public function isActive() {
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$status = $this->getStatus();
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return $status['installed'] && !$status['maintenance'];
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}
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/**
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* @return array
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* @throws NotFoundException
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* @throws \Exception
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*/
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private function getStatus() {
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if ($this->status) {
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return $this->status;
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}
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$key = 'remote/' . $this->url . '/status';
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$httpsKey = 'remote/' . $this->url . '/https';
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$status = $this->cache->get($key);
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if (!$status) {
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$response = $this->downloadStatus('https://' . $this->getUrl() . '/status.php');
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$protocol = 'https';
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if (!$response) {
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if ($status = $this->cache->get($httpsKey)) {
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throw new \Exception('refusing to connect to remote instance(' . $this->url . ') over http that was previously accessible over https');
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}
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$response = $this->downloadStatus('http://' . $this->getUrl() . '/status.php');
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$protocol = 'http';
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} else {
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$this->cache->set($httpsKey, true, 60 * 60 * 24 * 365);
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}
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$status = json_decode($response, true);
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if ($status) {
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$status['protocol'] = $protocol;
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}
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if ($status) {
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$this->cache->set($key, $status, 5 * 60);
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$this->status = $status;
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} else {
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throw new NotFoundException('Remote server not found at address ' . $this->url);
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}
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}
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return $status;
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}
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/**
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* @param string $url
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* @return bool|string
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*/
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private function downloadStatus($url) {
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try {
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$request = $this->clientService->newClient()->get($url);
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return $request->getBody();
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} catch (\Exception $e) {
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return false;
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}
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}
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}
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