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<?php
/**
* @copyright Copyright (c) 2016 Lukas Reschke <lukas@statuscode.ch>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Richdocuments\WOPI;
use OCP\Http\Client\IClientService;
use OCP\ICache;
use OCP\ICacheFactory;
use OCP\IConfig;
class DiscoveryManager {
/** @var IClientService */
private $clientService;
/** @var ICache */
private $cache;
/** @var IConfig */
private $config;
/** @var string */
private $discovery;
public function __construct(IClientService $clientService,
ICacheFactory $cacheFactory,
IConfig $config) {
$this->clientService = $clientService;
$this->cache = $cacheFactory->createDistributed('richdocuments');
$this->config = $config;
}
public function get() {
if ($this->discovery) {
return $this->discovery;
}
$this->discovery = $this->cache->get('discovery');
if (!$this->discovery) {
$response = $this->fetchFromRemote();
$responseBody = $response->getBody();
$this->discovery = $responseBody;
$this->cache->set('discovery', $this->discovery, 3600);
}
return $this->discovery;
}
/**
* @return \OCP\Http\Client\IResponse
* @throws \Exception
*/
public function fetchFromRemote() {
$remoteHost = $this->config->getAppValue('richdocuments', 'wopi_url');
$wopiDiscovery = $remoteHost . '/hosting/discovery';
$client = $this->clientService->newClient();
$options = ['timeout' => 45, 'nextcloud' => ['allow_local_address' => true]];
if ($this->config->getAppValue('richdocuments', 'disable_certificate_verification') === 'yes') {
$options['verify'] = false;
}
if ($this->isProxyStarting($wopiDiscovery))
$options['timeout'] = 180;
try {
return $client->get($wopiDiscovery, $options);
} catch (\Exception $e) {
throw $e;
}
}
public function refetch() {
$this->cache->remove('discovery');
$this->discovery = null;
}
/**
* @return boolean indicating if proxy.php is in initialize or false otherwise
*/
private function isProxyStarting($url) {
$usesProxy = false;
$proxyPos = strrpos($url, 'proxy.php');
if ($proxyPos === false)
$usesProxy = false;
else
$usesProxy = true;
if ($usesProxy === true) {
$statusUrl = substr($url, 0, $proxyPos);
$statusUrl = $statusUrl . 'proxy.php?status';
$client = $this->clientService->newClient();
$options = ['timeout' => 5, 'nextcloud' => ['allow_local_address' => true]];
if ($this->config->getAppValue('richdocuments', 'disable_certificate_verification') === 'yes') {
$options['verify'] = false;
}
try {
$response = $client->get($statusUrl, $options);
if ($response->getStatusCode() === 200) {
$body = json_decode($response->getBody(), true);
if ($body['status'] === 'starting'
|| $body['status'] === 'stopped'
|| $body['status'] === 'restarting') {
return true;
}
}
} catch (\Exception $e) {
// ignore
}
}
return false;
}
}
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