80 lines
2.3 KiB
PHP
80 lines
2.3 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2010-2021, the Friendica project
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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 <https://www.gnu.org/licenses/>.
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*
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*/
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namespace Friendica\Model\Storage;
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use Exception;
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use Friendica\Util\HTTPSignature;
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/**
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* External resource storage class
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*
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* This class is used to load external resources, like images.
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* Is not intended to be selectable by admins as default storage class.
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*/
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class ExternalResource implements IStorage
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{
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const NAME = 'ExternalResource';
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/**
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* @inheritDoc
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*/
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public function get(string $reference): string
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{
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$data = json_decode($reference);
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if (empty($data->url)) {
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throw new ReferenceStorageException(sprintf('Invalid reference %s, cannot retrieve URL', $reference));
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}
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$parts = parse_url($data->url);
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if (empty($parts['scheme']) || empty($parts['host'])) {
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throw new ReferenceStorageException(sprintf('Invalid reference %s, cannot extract scheme and host', $reference));
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}
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try {
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$fetchResult = HTTPSignature::fetchRaw($data->url, $data->uid, ['accept_content' => []]);
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} catch (Exception $exception) {
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throw new ReferenceStorageException(sprintf('External resource failed to get %s', $reference), $exception->getCode(), $exception);
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}
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if ($fetchResult->isSuccess()) {
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return $fetchResult->getBody();
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} else {
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throw new ReferenceStorageException(sprintf('External resource failed to get %s', $reference), $fetchResult->getReturnCode(), new Exception($fetchResult->getBody()));
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}
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}
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/**
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* @inheritDoc
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*/
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public function __toString()
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{
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return self::NAME;
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}
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/**
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* @inheritDoc
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*/
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public static function getName(): string
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{
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return self::NAME;
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}
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}
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