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<?php
declare(strict_types=1);
/**
* Nextcloud - Social Support
*
* This file is licensed under the Affero General Public License version 3 or
* later. See the COPYING file.
*
* @author Maxence Lange <maxence@artificial-owl.com>
* @copyright 2018, Maxence Lange <maxence@artificial-owl.com>
* @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\Social\Service;
use daita\MySmallPhpTools\Exceptions\MalformedArrayException;
use daita\MySmallPhpTools\Model\Request;
use daita\MySmallPhpTools\Traits\TArrayTools;
use daita\MySmallPhpTools\Traits\TStringTools;
use Exception;
use OCA\Social\Exceptions\CacheContentException;
use OCA\Social\Exceptions\CacheContentMimeTypeException;
use OCA\Social\Exceptions\CacheDocumentDoesNotExistException;
use OCA\Social\Exceptions\RequestContentException;
use OCA\Social\Exceptions\RequestNetworkException;
use OCA\Social\Exceptions\RequestResultNotJsonException;
use OCA\Social\Exceptions\RequestResultSizeException;
use OCA\Social\Exceptions\RequestServerException;
use OCA\Social\Exceptions\SocialAppConfigException;
use OCA\Social\Exceptions\UnauthorizedFediverseException;
use OCP\Files\IAppData;
use OCP\Files\NotFoundException;
use OCP\Files\NotPermittedException;
use OCP\Files\SimpleFS\ISimpleFile;
class CacheDocumentService {
use TArrayTools;
use TStringTools;
/** @var IAppData */
private $appData;
/** @var CurlService */
private $curlService;
/** @var ConfigService */
private $configService;
/** @var MiscService */
private $miscService;
/**
* CacheService constructor.
*
* @param IAppData $appData
* @param CurlService $curlService
* @param ConfigService $configService
* @param MiscService $miscService
*/
public function __construct(
IAppData $appData, CurlService $curlService, ConfigService $configService,
MiscService $miscService
) {
$this->appData = $appData;
$this->curlService = $curlService;
$this->configService = $configService;
$this->miscService = $miscService;
}
/**
* @param string $url
*
* @param string $mime
*
* @return string
* @throws CacheContentMimeTypeException
* @throws MalformedArrayException
* @throws NotFoundException
* @throws NotPermittedException
* @throws RequestContentException
* @throws RequestNetworkException
* @throws RequestResultNotJsonException
* @throws RequestResultSizeException
* @throws RequestServerException
* @throws SocialAppConfigException
* @throws UnauthorizedFediverseException
*/
public function saveRemoteFileToCache(string $url, &$mime = '') {
$filename = $this->uuid();
// creating a path aa/bb/cc/dd/ from the filename aabbccdd-0123-[...]
$path = chunk_split(substr($filename, 0, 8), 2, '/');
try {
$folder = $this->appData->getFolder($path);
} catch (NotFoundException $e) {
$folder = $this->appData->newFolder($path);
}
$content = $this->retrieveContent($url);
// To get the mime type, we create a temp file
$tmpFile = tmpfile();
$tmpPath = stream_get_meta_data($tmpFile)['uri'];
fwrite($tmpFile, $content);
$mime = mime_content_type($tmpPath);
fclose($tmpFile);
$this->filterMimeTypes($mime);
$cache = $folder->newFile($filename);
$cache->putContent($content);
return $path . $filename;
}
/**
*
* @param string $mime
*
* @throws CacheContentMimeTypeException
*/
public function filterMimeTypes(string $mime) {
$allowedMimeType = [
'image/jpeg',
'image/gif',
'image/png'
];
if (in_array($mime, $allowedMimeType)) {
return;
}
throw new CacheContentMimeTypeException();
}
/**
* @param string $path
*
* @return ISimpleFile
* @throws CacheContentException
* @throws CacheDocumentDoesNotExistException
*/
public function getContentFromCache(string $path) {
if ($path === '') {
throw new CacheDocumentDoesNotExistException();
}
$pos = strrpos($path, '/');
$dir = substr($path, 0, $pos);
$filename = substr($path, $pos + 1);
try {
$file = $this->appData->getFolder($dir)
->getFile($filename);
return $file;
} catch (Exception $e) {
throw new CacheContentException();
}
}
/**
* @param string $url
*
* @return string
* @throws MalformedArrayException
* @throws RequestContentException
* @throws RequestNetworkException
* @throws RequestResultNotJsonException
* @throws RequestResultSizeException
* @throws RequestServerException
* @throws SocialAppConfigException
* @throws UnauthorizedFediverseException
*/
public function retrieveContent(string $url) {
$url = parse_url($url);
$this->mustContains(['path', 'host', 'scheme'], $url);
$request = new Request($url['path'], Request::TYPE_GET, true);
$request->setAddress($url['host']);
$request->setProtocol($url['scheme']);
$content = $this->curlService->request($request);
return $content;
}
}
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