2016-01-26 00:49:26 +03:00
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<?php
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/**
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* @author Arthur Schiwon <blizzz@owncloud.com>
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* @author Björn Schießle <schiessle@owncloud.com>
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* @author Scrutinizer Auto-Fixer <auto-fixer@scrutinizer-ci.com>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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*
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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* @license AGPL-3.0
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*
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* This code 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, version 3,
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* as published by the Free Software Foundation.
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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, version 3,
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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 OCA\DAV\DAV\Sharing;
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2016-02-05 19:30:16 +03:00
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use OCA\DAV\Connector\Sabre\Principal;
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2016-01-26 00:49:26 +03:00
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use OCP\IDBConnection;
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class Backend {
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/** @var IDBConnection */
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private $db;
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const ACCESS_OWNER = 1;
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const ACCESS_READ_WRITE = 2;
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const ACCESS_READ = 3;
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/** @var string */
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private $resourceType;
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/**
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* CardDavBackend constructor.
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*
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* @param IDBConnection $db
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*/
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2016-02-05 19:30:16 +03:00
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public function __construct(IDBConnection $db, Principal $principalBackend, $resourceType) {
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2016-01-26 00:49:26 +03:00
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$this->db = $db;
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2016-02-05 19:30:16 +03:00
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$this->principalBackend = $principalBackend;
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2016-01-26 00:49:26 +03:00
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$this->resourceType = $resourceType;
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}
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/**
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* @param IShareable $shareable
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* @param string[] $add
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* @param string[] $remove
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*/
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public function updateShares($shareable, $add, $remove) {
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foreach($add as $element) {
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$this->shareWith($shareable, $element);
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}
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foreach($remove as $element) {
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2016-02-01 13:47:41 +03:00
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$this->unshare($shareable, $element);
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2016-01-26 00:49:26 +03:00
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}
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}
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/**
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* @param IShareable $shareable
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* @param string $element
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*/
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private function shareWith($shareable, $element) {
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$user = $element['href'];
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$parts = explode(':', $user, 2);
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if ($parts[0] !== 'principal') {
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return;
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}
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2016-02-01 13:47:41 +03:00
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// don't share with owner
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if ($shareable->getOwner() === $parts[1]) {
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return;
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}
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2016-01-26 00:49:26 +03:00
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// remove the share if it already exists
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2016-02-01 13:47:41 +03:00
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$this->unshare($shareable, $element['href']);
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2016-01-26 00:49:26 +03:00
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$access = self::ACCESS_READ;
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if (isset($element['readOnly'])) {
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$access = $element['readOnly'] ? self::ACCESS_READ : self::ACCESS_READ_WRITE;
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}
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$query = $this->db->getQueryBuilder();
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$query->insert('dav_shares')
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->values([
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'principaluri' => $query->createNamedParameter($parts[1]),
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'type' => $query->createNamedParameter($this->resourceType),
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'access' => $query->createNamedParameter($access),
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'resourceid' => $query->createNamedParameter($shareable->getResourceId())
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]);
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$query->execute();
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}
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2016-02-03 22:18:56 +03:00
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/**
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* @param $resourceId
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*/
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public function deleteAllShares($resourceId) {
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$query = $this->db->getQueryBuilder();
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$query->delete('dav_shares')
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->where($query->expr()->eq('resourceid', $query->createNamedParameter($resourceId)))
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->andWhere($query->expr()->eq('type', $query->createNamedParameter($this->resourceType)))
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->execute();
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}
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2016-01-26 00:49:26 +03:00
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/**
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2016-02-01 13:47:41 +03:00
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* @param IShareable $shareable
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2016-01-26 00:49:26 +03:00
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* @param string $element
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*/
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2016-02-01 13:47:41 +03:00
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private function unshare($shareable, $element) {
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2016-01-26 00:49:26 +03:00
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$parts = explode(':', $element, 2);
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if ($parts[0] !== 'principal') {
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return;
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}
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2016-02-01 13:47:41 +03:00
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// don't share with owner
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if ($shareable->getOwner() === $parts[1]) {
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return;
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}
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2016-01-26 00:49:26 +03:00
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$query = $this->db->getQueryBuilder();
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$query->delete('dav_shares')
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2016-02-01 13:47:41 +03:00
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->where($query->expr()->eq('resourceid', $query->createNamedParameter($shareable->getResourceId())))
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2016-01-26 00:49:26 +03:00
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->andWhere($query->expr()->eq('type', $query->createNamedParameter($this->resourceType)))
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->andWhere($query->expr()->eq('principaluri', $query->createNamedParameter($parts[1])))
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;
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$query->execute();
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}
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/**
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* Returns the list of people whom this resource is shared with.
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*
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* Every element in this array should have the following properties:
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* * href - Often a mailto: address
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* * commonName - Optional, for example a first + last name
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* * status - See the Sabre\CalDAV\SharingPlugin::STATUS_ constants.
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* * readOnly - boolean
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* * summary - Optional, a description for the share
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*
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* @return array
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*/
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public function getShares($resourceId) {
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$query = $this->db->getQueryBuilder();
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$result = $query->select(['principaluri', 'access'])
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->from('dav_shares')
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->where($query->expr()->eq('resourceid', $query->createNamedParameter($resourceId)))
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->andWhere($query->expr()->eq('type', $query->createNamedParameter($this->resourceType)))
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->execute();
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$shares = [];
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while($row = $result->fetch()) {
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2016-02-05 19:30:16 +03:00
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$p = $this->principalBackend->getPrincipalByPath($row['principaluri']);
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2016-01-26 00:49:26 +03:00
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$shares[]= [
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'href' => "principal:${row['principaluri']}",
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2016-02-05 19:30:16 +03:00
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'commonName' => isset($p['{DAV:}displayname']) ? $p['{DAV:}displayname'] : '',
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2016-01-26 00:49:26 +03:00
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'status' => 1,
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2016-01-28 22:30:40 +03:00
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'readOnly' => ($row['access'] == self::ACCESS_READ),
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2016-01-26 00:49:26 +03:00
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'{'.\OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD.'}principal' => $row['principaluri']
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];
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}
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return $shares;
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}
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/**
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* For shared resources the sharee is set in the ACL of the resource
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*
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* @param int $resourceId
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* @param array $acl
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* @return array
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*/
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public function applyShareAcl($resourceId, $acl) {
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$shares = $this->getShares($resourceId);
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foreach ($shares as $share) {
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$acl[] = [
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'privilege' => '{DAV:}read',
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'principal' => $share['{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}principal'],
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'protected' => true,
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];
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if (!$share['readOnly']) {
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$acl[] = [
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'privilege' => '{DAV:}write',
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'principal' => $share['{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}principal'],
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'protected' => true,
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];
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}
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}
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return $acl;
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}
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}
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