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![Varun Patil](/assets/img/avatar_default.png)
Can be null if not logged in; currently crashes Signed-off-by: Varun Patil <varunpatil@ucla.edu>
157 lines
4.2 KiB
PHP
157 lines
4.2 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* @copyright Copyright (c) 2016, Roeland Jago Douma <roeland@famdouma.nl>
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*
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* @author Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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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\Core\Controller;
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use OCA\Files_Sharing\SharedStorage;
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use OCP\AppFramework\Controller;
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use OCP\AppFramework\Http;
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use OCP\AppFramework\Http\DataResponse;
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use OCP\AppFramework\Http\FileDisplayResponse;
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use OCP\Files\File;
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use OCP\Files\IRootFolder;
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use OCP\Files\Node;
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use OCP\Files\NotFoundException;
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use OCP\IPreview;
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use OCP\IRequest;
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class PreviewController extends Controller {
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private ?string $userId;
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private IRootFolder $root;
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private IPreview $preview;
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public function __construct(string $appName,
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IRequest $request,
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IPreview $preview,
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IRootFolder $root,
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?string $userId
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) {
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parent::__construct($appName, $request);
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$this->preview = $preview;
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$this->root = $root;
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$this->userId = $userId;
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}
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/**
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* @NoAdminRequired
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* @NoCSRFRequired
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*
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* @return DataResponse|FileDisplayResponse
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*/
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public function getPreview(
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string $file = '',
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int $x = 32,
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int $y = 32,
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bool $a = false,
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bool $forceIcon = true,
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string $mode = 'fill'): Http\Response {
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if ($file === '' || $x === 0 || $y === 0) {
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return new DataResponse([], Http::STATUS_BAD_REQUEST);
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}
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try {
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$userFolder = $this->root->getUserFolder($this->userId);
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$node = $userFolder->get($file);
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} catch (NotFoundException $e) {
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return new DataResponse([], Http::STATUS_NOT_FOUND);
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}
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return $this->fetchPreview($node, $x, $y, $a, $forceIcon, $mode);
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}
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/**
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* @NoAdminRequired
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* @NoCSRFRequired
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*
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* @return DataResponse|FileDisplayResponse
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*/
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public function getPreviewByFileId(
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int $fileId = -1,
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int $x = 32,
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int $y = 32,
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bool $a = false,
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bool $forceIcon = true,
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string $mode = 'fill') {
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if ($fileId === -1 || $x === 0 || $y === 0) {
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return new DataResponse([], Http::STATUS_BAD_REQUEST);
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}
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$userFolder = $this->root->getUserFolder($this->userId);
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$nodes = $userFolder->getById($fileId);
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if (\count($nodes) === 0) {
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return new DataResponse([], Http::STATUS_NOT_FOUND);
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}
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$node = array_pop($nodes);
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return $this->fetchPreview($node, $x, $y, $a, $forceIcon, $mode);
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}
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/**
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* @return DataResponse|FileDisplayResponse
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*/
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private function fetchPreview(
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Node $node,
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int $x,
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int $y,
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bool $a,
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bool $forceIcon,
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string $mode) : Http\Response {
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if (!($node instanceof File) || (!$forceIcon && !$this->preview->isAvailable($node))) {
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return new DataResponse([], Http::STATUS_NOT_FOUND);
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}
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if (!$node->isReadable()) {
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return new DataResponse([], Http::STATUS_FORBIDDEN);
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}
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$storage = $node->getStorage();
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if ($storage->instanceOfStorage(SharedStorage::class)) {
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/** @var SharedStorage $storage */
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$share = $storage->getShare();
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$attributes = $share->getAttributes();
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if ($attributes !== null && $attributes->getAttribute('permissions', 'download') === false) {
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return new DataResponse([], Http::STATUS_FORBIDDEN);
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}
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}
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try {
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$f = $this->preview->getPreview($node, $x, $y, !$a, $mode);
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$response = new FileDisplayResponse($f, Http::STATUS_OK, [
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'Content-Type' => $f->getMimeType(),
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]);
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$response->cacheFor(3600 * 24, false, true);
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return $response;
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} catch (NotFoundException $e) {
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return new DataResponse([], Http::STATUS_NOT_FOUND);
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} catch (\InvalidArgumentException $e) {
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return new DataResponse([], Http::STATUS_BAD_REQUEST);
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}
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}
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}
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