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<?php |
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/** |
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* @copyright Copyright (c) 2016 Lukas Reschke <[email protected]> |
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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\App\AppStore\Fetcher; |
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use OCP\AppFramework\Http; |
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use OCP\AppFramework\Utility\ITimeFactory; |
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use OCP\Files\IAppData; |
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use OCP\Files\NotFoundException; |
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use OCP\Http\Client\IClientService; |
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use OCP\IConfig; |
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abstract class Fetcher { |
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const INVALIDATE_AFTER_SECONDS = 300; |
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/** @var IAppData */ |
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protected $appData; |
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/** @var IClientService */ |
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protected $clientService; |
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/** @var ITimeFactory */ |
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protected $timeFactory; |
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/** @var IConfig */ |
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protected $config; |
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/** @var string */ |
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protected $fileName; |
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/** @var string */ |
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protected $endpointUrl; |
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/** @var string */ |
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protected $version; |
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/** |
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* @param IAppData $appData |
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* @param IClientService $clientService |
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* @param ITimeFactory $timeFactory |
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* @param IConfig $config |
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*/ |
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public function __construct(IAppData $appData, |
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IClientService $clientService, |
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ITimeFactory $timeFactory, |
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IConfig $config) { |
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$this->appData = $appData; |
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$this->clientService = $clientService; |
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$this->timeFactory = $timeFactory; |
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$this->config = $config; |
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} |
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/** |
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* Fetches the response from the server |
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* |
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* @param string $ETag |
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* @param string $content |
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* |
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* @return array |
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*/ |
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protected function fetch($ETag, $content) { |
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$appstoreenabled = $this->config->getSystemValue('appstoreenabled', true); |
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if (!$appstoreenabled) { |
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return []; |
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} |
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$options = []; |
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if ($ETag !== '') { |
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$options['headers'] = [ |
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'If-None-Match' => $ETag, |
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]; |
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} |
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$client = $this->clientService->newClient(); |
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$response = $client->get($this->endpointUrl, $options); |
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$responseJson = []; |
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if ($response->getStatusCode() === Http::STATUS_NOT_MODIFIED) { |
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$responseJson['data'] = json_decode($content, true); |
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} else { |
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$responseJson['data'] = json_decode($response->getBody(), true); |
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$ETag = $response->getHeader('ETag'); |
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} |
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$responseJson['timestamp'] = $this->timeFactory->getTime(); |
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$responseJson['ncversion'] = $this->getVersion(); |
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if ($ETag !== '') { |
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$responseJson['ETag'] = $ETag; |
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} |
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return $responseJson; |
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} |
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/** |
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* Returns the array with the categories on the appstore server |
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* |
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* @return array |
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*/ |
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public function get() { |
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$appstoreenabled = $this->config->getSystemValue('appstoreenabled', true); |
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if (!$appstoreenabled) { |
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return []; |
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} |
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$rootFolder = $this->appData->getFolder('/'); |
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$ETag = ''; |
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$content = ''; |
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try { |
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// File does already exists |
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$file = $rootFolder->getFile($this->fileName); |
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$jsonBlob = json_decode($file->getContent(), true); |
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if (is_array($jsonBlob)) { |
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// No caching when the version has been updated |
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if (isset($jsonBlob['ncversion']) && $jsonBlob['ncversion'] === $this->getVersion()) { |
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// If the timestamp is older than 300 seconds request the files new |
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if ((int)$jsonBlob['timestamp'] > ($this->timeFactory->getTime() - self::INVALIDATE_AFTER_SECONDS)) { |
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return $jsonBlob['data']; |
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} |
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if (isset($jsonBlob['ETag'])) { |
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$ETag = $jsonBlob['ETag']; |
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$content = json_encode($jsonBlob['data']); |
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} |
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} |
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} |
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} catch (NotFoundException $e) { |
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// File does not already exists |
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$file = $rootFolder->newFile($this->fileName); |
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} |
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// Refresh the file content |
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try { |
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$responseJson = $this->fetch($ETag, $content); |
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$file->putContent(json_encode($responseJson)); |
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return json_decode($file->getContent(), true)['data']; |
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} catch (\Exception $e) { |
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return []; |
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} |
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} |
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/** |
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* Get the currently Nextcloud version |
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* @return string |
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*/ |
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protected function getVersion() { |
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if ($this->version === null) { |
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$this->version = $this->config->getSystemValue('version', '0.0.0'); |
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} |
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return $this->version; |
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} |
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/** |
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* Set the current Nextcloud version |
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* @param string $version |
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*/ |
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public function setVersion($version) { |
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$this->version = $version; |
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} |
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} |
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nextcloud /
server
