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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Georg Ehrke <oc.list@georgehrke.com>
* @author Joas Schilling <coding@schilljs.com>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author Thomas Citharel <tcit@tcit.fr>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @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\CalDAV;
use OCA\DAV\DAV\Sharing\IShareable;
use OCP\IConfig;
use OCP\IL10N;
use Sabre\CalDAV\Backend\BackendInterface;
use Sabre\DAV\Exception\Forbidden;
use Sabre\DAV\Exception\NotFound;
use Sabre\DAV\PropPatch;
/**
* Class Calendar
*
* @package OCA\DAV\CalDAV
* @property BackendInterface|CalDavBackend $caldavBackend
*/
class Calendar extends \Sabre\CalDAV\Calendar implements IShareable {
/** @var IConfig */
private $config;
public function __construct(BackendInterface $caldavBackend, $calendarInfo, IL10N $l10n, IConfig $config) {
parent::__construct($caldavBackend, $calendarInfo);
if ($this->getName() === BirthdayService::BIRTHDAY_CALENDAR_URI) {
$this->calendarInfo['{DAV:}displayname'] = $l10n->t('Contact birthdays');
}
if ($this->getName() === CalDavBackend::PERSONAL_CALENDAR_URI &&
$this->calendarInfo['{DAV:}displayname'] === CalDavBackend::PERSONAL_CALENDAR_NAME) {
$this->calendarInfo['{DAV:}displayname'] = $l10n->t('Personal');
}
$this->config = $config;
}
/**
* Updates the list of shares.
*
* The first array is a list of people that are to be added to the
* resource.
*
* Every element in the add array has the following properties:
* * href - A url. Usually a mailto: address
* * commonName - Usually a first and last name, or false
* * summary - A description of the share, can also be false
* * readOnly - A boolean value
*
* Every element in the remove array is just the address string.
*
* @param array $add
* @param array $remove
* @return void
* @throws Forbidden
*/
public function updateShares(array $add, array $remove) {
if ($this->isShared()) {
throw new Forbidden();
}
$this->caldavBackend->updateShares($this, $add, $remove);
}
/**
* Returns the list of people whom this resource is shared with.
*
* Every element in this array should have the following properties:
* * href - Often a mailto: address
* * commonName - Optional, for example a first + last name
* * status - See the Sabre\CalDAV\SharingPlugin::STATUS_ constants.
* * readOnly - boolean
* * summary - Optional, a description for the share
*
* @return array
*/
public function getShares() {
if ($this->isShared()) {
return [];
}
return $this->caldavBackend->getShares($this->getResourceId());
}
/**
* @return int
*/
public function getResourceId() {
return $this->calendarInfo['id'];
}
/**
* @return string
*/
public function getPrincipalURI() {
return $this->calendarInfo['principaluri'];
}
public function getACL() {
$acl = [
[
'privilege' => '{DAV:}read',
'principal' => $this->getOwner(),
'protected' => true,
]];
if ($this->getName() !== BirthdayService::BIRTHDAY_CALENDAR_URI) {
$acl[] = [
'privilege' => '{DAV:}write',
'principal' => $this->getOwner(),
'protected' => true,
];
} else {
$acl[] = [
'privilege' => '{DAV:}write-properties',
'principal' => $this->getOwner(),
'protected' => true,
];
}
if ($this->getOwner() !== parent::getOwner()) {
$acl[] = [
'privilege' => '{DAV:}read',
'principal' => parent::getOwner(),
'protected' => true,
];
if ($this->canWrite()) {
$acl[] = [
'privilege' => '{DAV:}write',
'principal' => parent::getOwner(),
'protected' => true,
];
} else {
$acl[] = [
'privilege' => '{DAV:}write-properties',
'principal' => parent::getOwner(),
'protected' => true,
];
}
}
if ($this->isPublic()) {
$acl[] = [
'privilege' => '{DAV:}read',
'principal' => 'principals/system/public',
'protected' => true,
];
}
$acl = $this->caldavBackend->applyShareAcl($this->getResourceId(), $acl);
if (!$this->isShared()) {
return $acl;
}
$allowedPrincipals = [$this->getOwner(), parent::getOwner(), 'principals/system/public'];
return array_filter($acl, function($rule) use ($allowedPrincipals) {
return in_array($rule['principal'], $allowedPrincipals);
});
}
public function getChildACL() {
return $this->getACL();
}
public function getOwner() {
if (isset($this->calendarInfo['{http://owncloud.org/ns}owner-principal'])) {
return $this->calendarInfo['{http://owncloud.org/ns}owner-principal'];
}
return parent::getOwner();
}
public function delete() {
if (isset($this->calendarInfo['{http://owncloud.org/ns}owner-principal']) &&
$this->calendarInfo['{http://owncloud.org/ns}owner-principal'] !== $this->calendarInfo['principaluri']) {
$principal = 'principal:' . parent::getOwner();
$shares = $this->caldavBackend->getShares($this->getResourceId());
$shares = array_filter($shares, function($share) use ($principal){
return $share['href'] === $principal;
});
if (empty($shares)) {
throw new Forbidden();
}
$this->caldavBackend->updateShares($this, [], [
$principal
]);
return;
}
// Remember when a user deleted their birthday calendar
// in order to not regenerate it on the next contacts change
if ($this->getName() === BirthdayService::BIRTHDAY_CALENDAR_URI) {
$principalURI = $this->getPrincipalURI();
$userId = substr($principalURI, 17);
$this->config->setUserValue($userId, 'dav', 'generateBirthdayCalendar', 'no');
}
parent::delete();
}
public function propPatch(PropPatch $propPatch) {
// parent::propPatch will only update calendars table
// if calendar is shared, changes have to be made to the properties table
if (!$this->isShared()) {
parent::propPatch($propPatch);
}
}
public function getChild($name) {
$obj = $this->caldavBackend->getCalendarObject($this->calendarInfo['id'], $name);
if (!$obj) {
throw new NotFound('Calendar object not found');
}
if ($obj['classification'] === CalDavBackend::CLASSIFICATION_PRIVATE && $this->isShared()) {
throw new NotFound('Calendar object not found');
}
$obj['acl'] = $this->getChildACL();
return new CalendarObject($this->caldavBackend, $this->calendarInfo, $obj);
}
public function getChildren() {
$objs = $this->caldavBackend->getCalendarObjects($this->calendarInfo['id']);
$children = [];
foreach ($objs as $obj) {
if ($obj['classification'] === CalDavBackend::CLASSIFICATION_PRIVATE && $this->isShared()) {
continue;
}
$obj['acl'] = $this->getChildACL();
$children[] = new CalendarObject($this->caldavBackend, $this->calendarInfo, $obj);
}
return $children;
}
public function getMultipleChildren(array $paths) {
$objs = $this->caldavBackend->getMultipleCalendarObjects($this->calendarInfo['id'], $paths);
$children = [];
foreach ($objs as $obj) {
if ($obj['classification'] === CalDavBackend::CLASSIFICATION_PRIVATE && $this->isShared()) {
continue;
}
$obj['acl'] = $this->getChildACL();
$children[] = new CalendarObject($this->caldavBackend, $this->calendarInfo, $obj);
}
return $children;
}
public function childExists($name) {
$obj = $this->caldavBackend->getCalendarObject($this->calendarInfo['id'], $name);
if (!$obj) {
return false;
}
if ($obj['classification'] === CalDavBackend::CLASSIFICATION_PRIVATE && $this->isShared()) {
return false;
}
return true;
}
public function calendarQuery(array $filters) {
$uris = $this->caldavBackend->calendarQuery($this->calendarInfo['id'], $filters);
if ($this->isShared()) {
return array_filter($uris, function ($uri) {
return $this->childExists($uri);
});
}
return $uris;
}
/**
* @param boolean $value
* @return string|null
*/
public function setPublishStatus($value) {
$publicUri = $this->caldavBackend->setPublishStatus($value, $this);
$this->calendarInfo['publicuri'] = $publicUri;
return $publicUri;
}
/**
* @return mixed $value
*/
public function getPublishStatus() {
return $this->caldavBackend->getPublishStatus($this);
}
private function canWrite() {
if (isset($this->calendarInfo['{http://owncloud.org/ns}read-only'])) {
return !$this->calendarInfo['{http://owncloud.org/ns}read-only'];
}
return true;
}
private function isPublic() {
return isset($this->calendarInfo['{http://owncloud.org/ns}public']);
}
protected function isShared() {
if (!isset($this->calendarInfo['{http://owncloud.org/ns}owner-principal'])) {
return false;
}
return $this->calendarInfo['{http://owncloud.org/ns}owner-principal'] !== $this->calendarInfo['principaluri'];
}
public function isSubscription() {
return isset($this->calendarInfo['{http://calendarserver.org/ns/}source']);
}
}