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105 lines
3 KiB
PHP
105 lines
3 KiB
PHP
<?php
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/**
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* SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
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* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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namespace OCA\DAV\CardDAV;
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use OCP\AppFramework\Http;
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use OCP\Files\NotFoundException;
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use Sabre\CardDAV\Card;
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use Sabre\DAV\Server;
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use Sabre\DAV\ServerPlugin;
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use Sabre\HTTP\RequestInterface;
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use Sabre\HTTP\ResponseInterface;
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use Symfony\Component\HttpFoundation\HeaderUtils;
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class ImageExportPlugin extends ServerPlugin {
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/** @var Server */
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protected $server;
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/**
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* ImageExportPlugin constructor.
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*
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* @param PhotoCache $cache
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*/
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public function __construct(
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private PhotoCache $cache,
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) {
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}
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/**
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* Initializes the plugin and registers event handlers
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*
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* @param Server $server
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* @return void
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*/
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#[\Override]
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public function initialize(Server $server) {
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$this->server = $server;
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$this->server->on('method:GET', [$this, 'httpGet'], 90);
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}
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/**
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* Intercepts GET requests on addressbook urls ending with ?photo.
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*
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* @param RequestInterface $request
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* @param ResponseInterface $response
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* @return bool
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*/
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public function httpGet(RequestInterface $request, ResponseInterface $response) {
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$queryParams = $request->getQueryParameters();
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// TODO: in addition to photo we should also add logo some point in time
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if (!array_key_exists('photo', $queryParams)) {
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return true;
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}
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$size = isset($queryParams['size']) ? (int)$queryParams['size'] : -1;
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$path = $request->getPath();
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$node = $this->server->tree->getNodeForPath($path);
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if (!$node instanceof Card) {
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return true;
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}
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$this->server->transactionType = 'carddav-image-export';
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// Checking ACL, if available.
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if ($aclPlugin = $this->server->getPlugin('acl')) {
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/** @var \Sabre\DAVACL\Plugin $aclPlugin */
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$aclPlugin->checkPrivileges($path, '{DAV:}read');
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}
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// Fetch addressbook
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$addressbookpath = explode('/', $path);
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array_pop($addressbookpath);
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$addressbookpath = implode('/', $addressbookpath);
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/** @var AddressBook $addressbook */
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$addressbook = $this->server->tree->getNodeForPath($addressbookpath);
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$response->setHeader('Cache-Control', 'private, max-age=3600, must-revalidate');
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$response->setHeader('Etag', $node->getETag());
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try {
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$file = $this->cache->get($addressbook->getResourceId(), $node->getName(), $size, $node);
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$response->setHeader('Content-Type', $file->getMimeType());
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$fileName = $node->getName() . '.' . PhotoCache::ALLOWED_CONTENT_TYPES[$file->getMimeType()];
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$sanitized = str_replace(['/', '\\'], '-', $fileName);
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$fallback = @iconv('UTF-8', 'ASCII//TRANSLIT', $sanitized) ?: $sanitized;
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$fallback = preg_replace('/[^\x20-\x7e]/', '', $fallback);
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$fallback = str_replace('%', '', $fallback);
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$response->setHeader('Content-Disposition', HeaderUtils::makeDisposition(HeaderUtils::DISPOSITION_ATTACHMENT, $sanitized, $fallback));
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$response->setStatus(Http::STATUS_OK);
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$response->setBody($file->getContent());
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} catch (NotFoundException $e) {
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$response->setStatus(Http::STATUS_NO_CONTENT);
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}
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return false;
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}
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}
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