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<?php
/**
* SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
* SPDX-License-Identifier: AGPL-3.0-only
*/
namespace OCA\DAV\CardDAV;
use OCP\Files\NotFoundException;
use Sabre\CardDAV\Card;
use Sabre\DAV\Server;
use Sabre\DAV\ServerPlugin;
use Sabre\HTTP\RequestInterface;
use Sabre\HTTP\ResponseInterface;
class ImageExportPlugin extends ServerPlugin {
/** @var Server */
protected $server;
/**
* ImageExportPlugin constructor.
*
* @param PhotoCache $cache
*/
public function __construct(
private PhotoCache $cache,
) {
}
/**
* Initializes the plugin and registers event handlers
*
* @param Server $server
* @return void
*/
public function initialize(Server $server) {
$this->server = $server;
$this->server->on('method:GET', [$this, 'httpGet'], 90);
}
/**
* Intercepts GET requests on addressbook urls ending with ?photo.
*
* @param RequestInterface $request
* @param ResponseInterface $response
* @return bool
*/
public function httpGet(RequestInterface $request, ResponseInterface $response) {
$queryParams = $request->getQueryParameters();
// TODO: in addition to photo we should also add logo some point in time
if (!array_key_exists('photo', $queryParams)) {
return true;
}
$size = isset($queryParams['size']) ? (int)$queryParams['size'] : -1;
$path = $request->getPath();
$node = $this->server->tree->getNodeForPath($path);
if (!($node instanceof Card)) {
return true;
}
$this->server->transactionType = 'carddav-image-export';
// Checking ACL, if available.
if ($aclPlugin = $this->server->getPlugin('acl')) {
/** @var \Sabre\DAVACL\Plugin $aclPlugin */
$aclPlugin->checkPrivileges($path, '{DAV:}read');
}
// Fetch addressbook
$addressbookpath = explode('/', $path);
array_pop($addressbookpath);
$addressbookpath = implode('/', $addressbookpath);
/** @var AddressBook $addressbook */
$addressbook = $this->server->tree->getNodeForPath($addressbookpath);
$response->setHeader('Cache-Control', 'private, max-age=3600, must-revalidate');
$response->setHeader('Etag', $node->getETag());
try {
$file = $this->cache->get($addressbook->getResourceId(), $node->getName(), $size, $node);
$response->setHeader('Content-Type', $file->getMimeType());
$fileName = $node->getName() . '.' . PhotoCache::ALLOWED_CONTENT_TYPES[$file->getMimeType()];
$response->setHeader('Content-Disposition', "attachment; filename=$fileName");
$response->setStatus(200);
$response->setBody($file->getContent());
} catch (NotFoundException $e) {
$response->setStatus(404);
}
return false;
}
}
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