memories/lib/Controller/VideoController.php

138 lines
5.0 KiB
PHP

<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2022 Varun Patil <radialapps@gmail.com>
* @author Varun Patil <radialapps@gmail.com>
* @license AGPL-3.0-or-later
*
* 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\Memories\Controller;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\DataDisplayResponse;
use OCP\AppFramework\Http\JSONResponse;
class VideoController extends ApiBase
{
/**
* @NoAdminRequired
*
* @NoCSRFRequired
*
* Transcode a video to HLS by proxy
*
* @return JSONResponse an empty JSONResponse with respective http status code
*/
public function transcode(string $client, string $fileid, string $profile): Http\Response
{
$user = $this->userSession->getUser();
if (null === $user) {
return new JSONResponse([], Http::STATUS_PRECONDITION_FAILED);
}
// Make sure not running in read-only mode
if (false !== $this->config->getSystemValue('memories.no_transcode', 'UNSET')) {
return new JSONResponse(['message' => 'Transcoding disabled'], Http::STATUS_FORBIDDEN);
}
// Check client identifier is 8 characters or more
if (\strlen($client) < 8) {
return new JSONResponse(['message' => 'Invalid client identifier'], Http::STATUS_BAD_REQUEST);
}
// Get file
$files = $this->rootFolder->getUserFolder($user->getUID())->getById($fileid);
if (0 === \count($files)) {
return new JSONResponse(['message' => 'File not found'], Http::STATUS_NOT_FOUND);
}
$file = $files[0];
// Local files only for now
if (!$file->getStorage()->isLocal()) {
return new JSONResponse(['message' => 'External storage not supported'], Http::STATUS_FORBIDDEN);
}
// Get file path
$path = $file->getStorage()->getLocalFile($file->getInternalPath());
if (!$path || !file_exists($path)) {
return new JSONResponse(['message' => 'File not found'], Http::STATUS_NOT_FOUND);
}
// Check if file starts with temp dir
$tmpDir = sys_get_temp_dir();
if (0 === strpos($path, $tmpDir)) {
return new JSONResponse(['message' => 'File is in temp dir!'], Http::STATUS_NOT_FOUND);
}
// Make upstream request
[$data, $contentType, $returnCode] = $this->getUpstream($client, $path, $profile);
// If status code was 0, it's likely the server is down
// Make one attempt to start if we can't find the process
if (0 === $returnCode) {
$transcoder = $this->config->getSystemValue('memories.transcoder', false);
if (!$transcoder) {
return new JSONResponse(['message' => 'Transcoder not configured'], Http::STATUS_INTERNAL_SERVER_ERROR);
}
// Check for environment variables
$vaapi = $this->config->getSystemValue('memories.qsv', false);
$env = '';
if ($vaapi) {
$env .= 'VAAPI=1 ';
}
// Check if already running
shell_exec("pkill {$transcoder}");
shell_exec("{$env} nohup {$transcoder} > {$tmpDir}/go-vod.log 2>&1 & > /dev/null");
// wait for 1s and try again
sleep(1);
[$data, $contentType, $returnCode] = $this->getUpstream($client, $path, $profile);
}
// Check data was received
if ($returnCode >= 400 || false === $data) {
return new JSONResponse(['message' => 'Transcode failed'], Http::STATUS_INTERNAL_SERVER_ERROR);
}
// Create and send response
$response = new DataDisplayResponse($data, Http::STATUS_OK, [
'Content-Type' => $contentType,
]);
$response->cacheFor(0, false, false);
return $response;
}
private function getUpstream($client, $path, $profile)
{
$path = rawurlencode($path);
$ch = curl_init("http://127.0.0.1:47788/{$client}{$path}/{$profile}");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
curl_setopt($ch, CURLOPT_HEADER, 0);
$data = curl_exec($ch);
$contentType = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
$returnCode = (int) curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
return [$data, $contentType, $returnCode];
}
}