friendica/src/Core/Storage/Type/ExternalResource.php

99 lines
3.1 KiB
PHP

<?php
/**
* @copyright Copyright (C) 2010-2023, the Friendica project
*
* @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 <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Core\Storage\Type;
use Exception;
use Friendica\Core\Storage\Exception\ReferenceStorageException;
use Friendica\Core\Storage\Capability\ICanReadFromStorage;
use Friendica\Network\HTTPClient\Client\HttpClientAccept;
use Friendica\Network\HTTPClient\Client\HttpClientOptions;
use Friendica\Util\HTTPSignature;
use Psr\Log\LoggerInterface;
/**
* External resource storage class
*
* This class is used to load external resources, like images.
* Is not intended to be selectable by admins as default storage class.
*/
class ExternalResource implements ICanReadFromStorage
{
const NAME = 'ExternalResource';
/** @var LoggerInterface */
protected $logger;
public function __construct(LoggerInterface $logger)
{
$this->logger = $logger;
}
/**
* @inheritDoc
*/
public function get(string $reference): string
{
$data = json_decode($reference);
if (empty($data->url)) {
throw new ReferenceStorageException(sprintf('Invalid reference %s, cannot retrieve URL', $reference));
}
$parts = parse_url($data->url);
if (empty($parts['scheme']) || empty($parts['host'])) {
throw new ReferenceStorageException(sprintf('Invalid reference %s, cannot extract scheme and host', $reference));
}
try {
$fetchResult = HTTPSignature::fetchRaw($data->url, $data->uid, [HttpClientOptions::ACCEPT_CONTENT => [HttpClientAccept::IMAGE]]);
} catch (Exception $exception) {
$this->logger->notice('URL is invalid', ['url' => $data->url, 'error' => $exception]);
throw new ReferenceStorageException(sprintf('External resource failed to get %s', $reference), $exception->getCode(), $exception);
}
if (!empty($fetchResult) && $fetchResult->isSuccess()) {
$this->logger->debug('Got picture', ['Content-Type' => $fetchResult->getHeader('Content-Type'), 'uid' => $data->uid, 'url' => $data->url]);
return $fetchResult->getBody();
} else {
if (empty($fetchResult)) {
throw new ReferenceStorageException(sprintf('External resource failed to get %s', $reference));
} else {
throw new ReferenceStorageException(sprintf('External resource failed to get %s', $reference), $fetchResult->getReturnCode(), new Exception($fetchResult->getBody()));
}
}
}
/**
* @inheritDoc
*/
public function __toString(): string
{
return self::NAME;
}
/**
* @inheritDoc
*/
public static function getName(): string
{
return self::NAME;
}
}