owncloud/core

<?php
/**
 * @author Thomas Müller <thomas.mueller@tmit.eu>
 *
 * @copyright Copyright (c) 2018, ownCloud GmbH
 * @license AGPL-3.0
 *
 * This code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * 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, version 3,
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 *
 */

namespace OCA\DAV\Avatars;

use OCP\IAvatarManager;
use Sabre\DAV\Exception\Forbidden;
use Sabre\DAV\Exception\MethodNotAllowed;
use Sabre\DAV\Exception\NotFound;
use Sabre\DAV\ICollection;

class AvatarHome implements ICollection {
    /** @var array */
    private $principalInfo;
    /** @var IAvatarManager */
    private $avatarManager;

    /**
     * AvatarHome constructor.
     *
     * @param array $principalInfo
     */
    public function __construct($principalInfo, IAvatarManager $avatarManager) {
        $this->principalInfo = $principalInfo;
        $this->avatarManager = $avatarManager;
    }

    public function createFile($name, $data = null) {
        throw new Forbidden('Permission denied to create a file');
    }

    public function createDirectory($name) {
        throw new Forbidden('Permission denied to create a folder');
    }

    public function getChild($name) {
        $elements = \pathinfo($name);
        $ext = isset($elements['extension']) ? $elements['extension'] : '';
        $size = \intval(isset($elements['filename']) ? $elements['filename'] : '64');
        if (!\in_array($ext, ['jpeg', 'png'])) {
            throw new MethodNotAllowed('File format not allowed');
        }
        if ($size <= 0 || $size > 1024) {
            throw new MethodNotAllowed('Invalid image size');
        }
        $avatar = $this->avatarManager->getAvatar($this->getName());
        if ($avatar === null || !$avatar->exists()) {
            throw new NotFound();
        }
        return new AvatarNode($size, $ext, $avatar);
    }

    public function getChildren() {
        try {
            return [
                $this->getChild('96.jpeg')
            ];
        } catch (NotFound $exception) {
            return [];
        }
    }

    public function childExists($name) {
        try {
            $ret = $this->getChild($name);
            return $ret !== null;
        } catch (NotFound $ex) {
            return false;
        } catch (MethodNotAllowed $ex) {
            return false;
        }
    }

    public function delete() {
        throw new Forbidden('Permission denied to delete this folder');
    }

    public function getName() {
        list(, $name) = \Sabre\Uri\split($this->principalInfo['uri']);
        return $name;
    }

    public function setName($name) {
        throw new Forbidden('Permission denied to rename this folder');
    }

    /**
     * Returns the last modification time, as a unix timestamp
     *
     * @return int
     */
    public function getLastModified() {
        return null;
    }
}