<?php
namespace Sabre\CalDAV;
/**
* The CalendarObject represents a single VEVENT or VTODO within a Calendar.
*
* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
* @author Evert Pot (http://evertpot.com/)
* @license http://sabre.io/license/ Modified BSD License
*/
class CalendarObject extends \Sabre\DAV\File implements ICalendarObject, \Sabre\DAVACL\IACL {
/**
* Sabre\CalDAV\Backend\BackendInterface
*
* @var Sabre\CalDAV\Backend\AbstractBackend
*/
protected $caldavBackend;
/**
* Array with information about this CalendarObject
*
* @var array
*/
protected $objectData;
/**
* Array with information about the containing calendar
*
* @var array
*/
protected $calendarInfo;
/**
* Constructor
*
* The following properties may be passed within $objectData:
*
* * calendarid - This must refer to a calendarid from a caldavBackend
* * uri - A unique uri. Only the 'basename' must be passed.
* * calendardata (optional) - The iCalendar data
* * etag - (optional) The etag for this object, MUST be encloded with
* double-quotes.
* * size - (optional) The size of the data in bytes.
* * lastmodified - (optional) format as a unix timestamp.
* * acl - (optional) Use this to override the default ACL for the node.
*
* @param Backend\BackendInterface $caldavBackend
* @param array $calendarInfo
* @param array $objectData
*/
function __construct(Backend\BackendInterface $caldavBackend, array $calendarInfo, array $objectData) {
$this->caldavBackend = $caldavBackend;
if (!isset($objectData['uri'])) {
throw new \InvalidArgumentException('The objectData argument must contain an \'uri\' property');
}
$this->calendarInfo = $calendarInfo;
$this->objectData = $objectData;
}
/**
* Returns the uri for this object
*
* @return string
*/
function getName() {
return $this->objectData['uri'];
}
/**
* Returns the ICalendar-formatted object
*
* @return string
*/
function get() {
// Pre-populating the 'calendardata' is optional, if we don't have it
// already we fetch it from the backend.
if (!isset($this->objectData['calendardata'])) {
$this->objectData = $this->caldavBackend->getCalendarObject($this->calendarInfo['id'], $this->objectData['uri']);
}
return $this->objectData['calendardata'];
}
/**
* Updates the ICalendar-formatted object
*
* @param string|resource $calendarData
* @return string
*/
function put($calendarData) {
if (is_resource($calendarData)) {
$calendarData = stream_get_contents($calendarData);
}
$etag = $this->caldavBackend->updateCalendarObject($this->calendarInfo['id'], $this->objectData['uri'], $calendarData);
$this->objectData['calendardata'] = $calendarData;
$this->objectData['etag'] = $etag;
return $etag;
}
/**
* Deletes the calendar object
*
* @return void
*/
function delete() {
$this->caldavBackend->deleteCalendarObject($this->calendarInfo['id'], $this->objectData['uri']);
}
/**
* Returns the mime content-type
*
* @return string
*/
function getContentType() {
$mime = 'text/calendar; charset=utf-8';
if (isset($this->objectData['component']) && $this->objectData['component']) {
$mime .= '; component=' . $this->objectData['component'];
}
return $mime;
}
/**
* Returns an ETag for this object.
*
* The ETag is an arbitrary string, but MUST be surrounded by double-quotes.
*
* @return string
*/
function getETag() {
if (isset($this->objectData['etag'])) {
return $this->objectData['etag'];
} else {
return '"' . md5($this->get()) . '"';
}
}
/**
* Returns the last modification date as a unix timestamp
*
* @return int
*/
function getLastModified() {
return $this->objectData['lastmodified'];
}
/**
* Returns the size of this object in bytes
*
* @return int
*/
function getSize() {
if (array_key_exists('size', $this->objectData)) {
return $this->objectData['size'];
} else {
return strlen($this->get());
}
}
/**
* Returns the owner principal
*
* This must be a url to a principal, or null if there's no owner
*
* @return string|null
*/
function getOwner() {
return $this->calendarInfo['principaluri'];
}
/**
* Returns a group principal
*
* This must be a url to a principal, or null if there's no owner
*
* @return string|null
*/
function getGroup() {
return null;
}
/**
* Returns a list of ACE's for this node.
*
* Each ACE has the following properties:
* * 'privilege', a string such as {DAV:}read or {DAV:}write. These are
* currently the only supported privileges
* * 'principal', a url to the principal who owns the node
* * 'protected' (optional), indicating that this ACE is not allowed to
* be updated.
*
* @return array
*/
function getACL() {
// An alternative acl may be specified in the object data.
if (isset($this->objectData['acl'])) {
return $this->objectData['acl'];
}
// The default ACL
return [
[
'privilege' => '{DAV:}read',
'principal' => $this->calendarInfo['principaluri'],
'protected' => true,
],
[
'privilege' => '{DAV:}write',
'principal' => $this->calendarInfo['principaluri'],
'protected' => true,
],
[
'privilege' => '{DAV:}read',
'principal' => $this->calendarInfo['principaluri'] . '/calendar-proxy-write',
'protected' => true,
],
[
'privilege' => '{DAV:}write',
'principal' => $this->calendarInfo['principaluri'] . '/calendar-proxy-write',
'protected' => true,
],
[
'privilege' => '{DAV:}read',
'principal' => $this->calendarInfo['principaluri'] . '/calendar-proxy-read',
'protected' => true,
],
];
}
/**
* Updates the ACL
*
* This method will receive a list of new ACE's.
*
* @param array $acl
* @return void
*/
function setACL(array $acl) {
throw new \Sabre\DAV\Exception\MethodNotAllowed('Changing ACL is not yet supported');
}
/**
* Returns the list of supported privileges for this node.
*
* The returned data structure is a list of nested privileges.
* See \Sabre\DAVACL\Plugin::getDefaultSupportedPrivilegeSet for a simple
* standard structure.
*
* If null is returned from this method, the default privilege set is used,
* which is fine for most common usecases.
*
* @return array|null
*/
function getSupportedPrivilegeSet() {
return null;
}
}
