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Calendar.php
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Calendar.php
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<?php
namespace Sabre\CalDAV;
use Sabre\DAV;
use Sabre\DAVACL;
use Sabre\DAV\PropPatch;
/**
* This object represents a CalDAV calendar.
*
* A calendar can contain multiple TODO and or Events. These are represented
* as \Sabre\CalDAV\CalendarObject objects.
*
* @copyright Copyright (C) 2007-2015 fruux GmbH (https://fruux.com/).
* @author Evert Pot (http://evertpot.com/)
* @license http://sabre.io/license/ Modified BSD License
*/
class Calendar implements ICalendar, DAV\IProperties, DAV\Sync\ISyncCollection, DAV\IMultiGet {
/**
* This is an array with calendar information
*
* @var array
*/
protected $calendarInfo;
/**
* CalDAV backend
*
* @var Backend\BackendInterface
*/
protected $caldavBackend;
/**
* Constructor
*
* @param Backend\BackendInterface $caldavBackend
* @param array $calendarInfo
*/
function __construct(Backend\BackendInterface $caldavBackend, $calendarInfo) {
$this->caldavBackend = $caldavBackend;
$this->calendarInfo = $calendarInfo;
}
/**
* Returns the name of the calendar
*
* @return string
*/
function getName() {
return $this->calendarInfo['uri'];
}
/**
* Updates properties on this node.
*
* This method received a PropPatch object, which contains all the
* information about the update.
*
* To update specific properties, call the 'handle' method on this object.
* Read the PropPatch documentation for more information.
*
* @param PropPatch $propPatch
* @return void
*/
function propPatch(PropPatch $propPatch) {
return $this->caldavBackend->updateCalendar($this->calendarInfo['id'], $propPatch);
}
/**
* Returns the list of properties
*
* @param array $requestedProperties
* @return array
*/
function getProperties($requestedProperties) {
$response = [];
foreach ($this->calendarInfo as $propName => $propValue) {
if ($propName[0] === '{')
$response[$propName] = $this->calendarInfo[$propName];
}
return $response;
}
/**
* Returns a calendar object
*
* The contained calendar objects are for example Events or Todo's.
*
* @param string $name
* @return \Sabre\CalDAV\ICalendarObject
*/
function getChild($name) {
$obj = $this->caldavBackend->getCalendarObject($this->calendarInfo['id'], $name);
if (!$obj) throw new DAV\Exception\NotFound('Calendar object not found');
$obj['acl'] = $this->getChildACL();
return new CalendarObject($this->caldavBackend, $this->calendarInfo, $obj);
}
/**
* Returns the full list of calendar objects
*
* @return array
*/
function getChildren() {
$objs = $this->caldavBackend->getCalendarObjects($this->calendarInfo['id']);
$children = [];
foreach ($objs as $obj) {
$obj['acl'] = $this->getChildACL();
$children[] = new CalendarObject($this->caldavBackend, $this->calendarInfo, $obj);
}
return $children;
}
/**
* This method receives a list of paths in it's first argument.
* It must return an array with Node objects.
*
* If any children are not found, you do not have to return them.
*
* @param string[] $paths
* @return array
*/
function getMultipleChildren(array $paths) {
$objs = $this->caldavBackend->getMultipleCalendarObjects($this->calendarInfo['id'], $paths);
$children = [];
foreach ($objs as $obj) {
$obj['acl'] = $this->getChildACL();
$children[] = new CalendarObject($this->caldavBackend, $this->calendarInfo, $obj);
}
return $children;
}
/**
* Checks if a child-node exists.
*
* @param string $name
* @return bool
*/
function childExists($name) {
$obj = $this->caldavBackend->getCalendarObject($this->calendarInfo['id'], $name);
if (!$obj)
return false;
else
return true;
}
/**
* Creates a new directory
*
* We actually block this, as subdirectories are not allowed in calendars.
*
* @param string $name
* @return void
*/
function createDirectory($name) {
throw new DAV\Exception\MethodNotAllowed('Creating collections in calendar objects is not allowed');
}
/**
* Creates a new file
*
* The contents of the new file must be a valid ICalendar string.
*
* @param string $name
* @param resource $calendarData
* @return string|null
*/
function createFile($name, $calendarData = null) {
if (is_resource($calendarData)) {
$calendarData = stream_get_contents($calendarData);
}
return $this->caldavBackend->createCalendarObject($this->calendarInfo['id'], $name, $calendarData);
}
/**
* Deletes the calendar.
*
* @return void
*/
function delete() {
$this->caldavBackend->deleteCalendar($this->calendarInfo['id']);
}
/**
* Renames the calendar. Note that most calendars use the
* {DAV:}displayname to display a name to display a name.
*
* @param string $newName
* @return void
*/
function setName($newName) {
throw new DAV\Exception\MethodNotAllowed('Renaming calendars is not yet supported');
}
/**
* Returns the last modification date as a unix timestamp.
*
* @return void
*/
function getLastModified() {
return null;
}
/**
* 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() {
$acl = [
[
'privilege' => '{DAV:}read',
'principal' => $this->getOwner(),
'protected' => true,
],
[
'privilege' => '{DAV:}read',
'principal' => $this->getOwner() . '/calendar-proxy-write',
'protected' => true,
],
[
'privilege' => '{DAV:}read',
'principal' => $this->getOwner() . '/calendar-proxy-read',
'protected' => true,
],
[
'privilege' => '{' . Plugin::NS_CALDAV . '}read-free-busy',
'principal' => '{DAV:}authenticated',
'protected' => true,
],
];
if (empty($this->calendarInfo['{http://sabredav.org/ns}read-only'])) {
$acl[] = [
'privilege' => '{DAV:}write',
'principal' => $this->getOwner(),
'protected' => true,
];
$acl[] = [
'privilege' => '{DAV:}write',
'principal' => $this->getOwner() . '/calendar-proxy-write',
'protected' => true,
];
}
return $acl;
}
/**
* This method returns the ACL's for calendar objects in this calendar.
* The result of this method automatically gets passed to the
* calendar-object nodes in the calendar.
*
* @return array
*/
function getChildACL() {
$acl = [
[
'privilege' => '{DAV:}read',
'principal' => $this->getOwner(),
'protected' => true,
],
[
'privilege' => '{DAV:}read',
'principal' => $this->getOwner() . '/calendar-proxy-write',
'protected' => true,
],
[
'privilege' => '{DAV:}read',
'principal' => $this->getOwner() . '/calendar-proxy-read',
'protected' => true,
],
];
if (empty($this->calendarInfo['{http://sabredav.org/ns}read-only'])) {
$acl[] = [
'privilege' => '{DAV:}write',
'principal' => $this->getOwner(),
'protected' => true,
];
$acl[] = [
'privilege' => '{DAV:}write',
'principal' => $this->getOwner() . '/calendar-proxy-write',
'protected' => true,
];
}
return $acl;
}
/**
* Updates the ACL
*
* This method will receive a list of new ACE's.
*
* @param array $acl
* @return void
*/
function setACL(array $acl) {
throw new 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() {
$default = DAVACL\Plugin::getDefaultSupportedPrivilegeSet();
// We need to inject 'read-free-busy' in the tree, aggregated under
// {DAV:}read.
foreach ($default['aggregates'] as &$agg) {
if ($agg['privilege'] !== '{DAV:}read') continue;
$agg['aggregates'][] = [
'privilege' => '{' . Plugin::NS_CALDAV . '}read-free-busy',
];
}
return $default;
}
/**
* Performs a calendar-query on the contents of this calendar.
*
* The calendar-query is defined in RFC4791 : CalDAV. Using the
* calendar-query it is possible for a client to request a specific set of
* object, based on contents of iCalendar properties, date-ranges and
* iCalendar component types (VTODO, VEVENT).
*
* This method should just return a list of (relative) urls that match this
* query.
*
* The list of filters are specified as an array. The exact array is
* documented by Sabre\CalDAV\CalendarQueryParser.
*
* @param array $filters
* @return array
*/
function calendarQuery(array $filters) {
return $this->caldavBackend->calendarQuery($this->calendarInfo['id'], $filters);
}
/**
* This method returns the current sync-token for this collection.
* This can be any string.
*
* If null is returned from this function, the plugin assumes there's no
* sync information available.
*
* @return string|null
*/
function getSyncToken() {
if (
$this->caldavBackend instanceof Backend\SyncSupport &&
isset($this->calendarInfo['{DAV:}sync-token'])
) {
return $this->calendarInfo['{DAV:}sync-token'];
}
if (
$this->caldavBackend instanceof Backend\SyncSupport &&
isset($this->calendarInfo['{http://sabredav.org/ns}sync-token'])
) {
return $this->calendarInfo['{http://sabredav.org/ns}sync-token'];
}
}
/**
* The getChanges method returns all the changes that have happened, since
* the specified syncToken and the current collection.
*
* This function should return an array, such as the following:
*
* [
* 'syncToken' => 'The current synctoken',
* 'added' => [
* 'new.txt',
* ],
* 'modified' => [
* 'modified.txt',
* ],
* 'deleted' => [
* 'foo.php.bak',
* 'old.txt'
* ]
* ];
*
* The syncToken property should reflect the *current* syncToken of the
* collection, as reported getSyncToken(). This is needed here too, to
* ensure the operation is atomic.
*
* If the syncToken is specified as null, this is an initial sync, and all
* members should be reported.
*
* The modified property is an array of nodenames that have changed since
* the last token.
*
* The deleted property is an array with nodenames, that have been deleted
* from collection.
*
* The second argument is basically the 'depth' of the report. If it's 1,
* you only have to report changes that happened only directly in immediate
* descendants. If it's 2, it should also include changes from the nodes
* below the child collections. (grandchildren)
*
* The third (optional) argument allows a client to specify how many
* results should be returned at most. If the limit is not specified, it
* should be treated as infinite.
*
* If the limit (infinite or not) is higher than you're willing to return,
* you should throw a Sabre\DAV\Exception\TooMuchMatches() exception.
*
* If the syncToken is expired (due to data cleanup) or unknown, you must
* return null.
*
* The limit is 'suggestive'. You are free to ignore it.
*
* @param string $syncToken
* @param int $syncLevel
* @param int $limit
* @return array
*/
function getChanges($syncToken, $syncLevel, $limit = null) {
if (!$this->caldavBackend instanceof Backend\SyncSupport) {
return null;
}
return $this->caldavBackend->getChangesForCalendar(
$this->calendarInfo['id'],
$syncToken,
$syncLevel,
$limit
);
}
}

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