This VEVENT will have a recurrence id, and it's DTSTART and DTEND
altered.
| public getEventObject ( ) : Sabre\VObject\Component\VEvent | ||
| return | Sabre\VObject\Component\VEvent | |
/**
* If this calendar object, has events with recurrence rules, this method
* can be used to expand the event into multiple sub-events.
*
* Each event will be stripped from it's recurrence information, and only
* the instances of the event in the specified timerange will be left
* alone.
*
* In addition, this method will cause timezone information to be stripped,
* and normalized to UTC.
*
* This method will alter the VCalendar. This cannot be reversed.
*
* This functionality is specifically used by the CalDAV standard. It is
* possible for clients to request expand events, if they are rather simple
* clients and do not have the possibility to calculate recurrences.
*
* @param DateTime $start
* @param DateTime $end
* @param DateTimeZone $timeZone reference timezone for floating dates and
* times.
* @return void
*/
function expand(DateTime $start, DateTime $end, DateTimeZone $timeZone = null)
{
$newEvents = array();
if (!$timeZone) {
$timeZone = new DateTimeZone('UTC');
}
// An array of events. Events are indexed by UID. Each item in this
// array is a list of one or more events that match the UID.
$recurringEvents = array();
foreach ($this->select('VEVENT') as $key => $vevent) {
$uid = (string) $vevent->UID;
if (!$uid) {
throw new \LogicException('Event did not have a UID!');
}
if (isset($vevent->{'RECURRENCE-ID'}) || isset($vevent->RRULE)) {
if (isset($recurringEvents[$uid])) {
$recurringEvents[$uid][] = $vevent;
} else {
$recurringEvents[$uid] = array($vevent);
}
continue;
}
if (!isset($vevent->RRULE)) {
if ($vevent->isInTimeRange($start, $end)) {
$newEvents[] = $vevent;
}
continue;
}
}
foreach ($recurringEvents as $events) {
try {
$it = new EventIterator($events, $timeZone);
} catch (NoInstancesException $e) {
// This event is recurring, but it doesn't have a single
// instance. We are skipping this event from the output
// entirely.
continue;
}
$it->fastForward($start);
while ($it->valid() && $it->getDTStart() < $end) {
if ($it->getDTEnd() > $start) {
$newEvents[] = $it->getEventObject();
}
$it->next();
}
}
// Wiping out all old VEVENT objects
unset($this->VEVENT);
// Setting all properties to UTC time.
foreach ($newEvents as $newEvent) {
foreach ($newEvent->children as $child) {
if ($child instanceof VObject\Property\ICalendar\DateTime && $child->hasTime()) {
$dt = $child->getDateTimes($timeZone);
// We only need to update the first timezone, because
// setDateTimes will match all other timezones to the
// first.
$dt[0]->setTimeZone(new DateTimeZone('UTC'));
$child->setDateTimes($dt);
}
}
$this->add($newEvent);
}
// Removing all VTIMEZONE components
unset($this->VTIMEZONE);
}
/**
* Processes incoming REPLY messages.
*
* The message is a reply. This is for example an attendee telling
* an organizer he accepted the invite, or declined it.
*
* @param Message $itipMessage
* @param VCalendar $existingObject
* @return VCalendar|null
*/
protected function processMessageReply(Message $itipMessage, VCalendar $existingObject = null)
{
// A reply can only be processed based on an existing object.
// If the object is not available, the reply is ignored.
if (!$existingObject) {
return null;
}
$instances = array();
$requestStatus = '2.0';
// Finding all the instances the attendee replied to.
foreach ($itipMessage->message->VEVENT as $vevent) {
$recurId = isset($vevent->{'RECURRENCE-ID'}) ? $vevent->{'RECURRENCE-ID'}->getValue() : 'master';
$attendee = $vevent->ATTENDEE;
$instances[$recurId] = $attendee['PARTSTAT']->getValue();
if (isset($vevent->{'REQUEST-STATUS'})) {
$requestStatus = $vevent->{'REQUEST-STATUS'}->getValue();
list($requestStatus) = explode(';', $requestStatus);
}
}
// Now we need to loop through the original organizer event, to find
// all the instances where we have a reply for.
$masterObject = null;
foreach ($existingObject->VEVENT as $vevent) {
$recurId = isset($vevent->{'RECURRENCE-ID'}) ? $vevent->{'RECURRENCE-ID'}->getValue() : 'master';
if ($recurId === 'master') {
$masterObject = $vevent;
}
if (isset($instances[$recurId])) {
$attendeeFound = false;
if (isset($vevent->ATTENDEE)) {
foreach ($vevent->ATTENDEE as $attendee) {
if ($attendee->getValue() === $itipMessage->sender) {
$attendeeFound = true;
$attendee['PARTSTAT'] = $instances[$recurId];
$attendee['SCHEDULE-STATUS'] = $requestStatus;
// Un-setting the RSVP status, because we now know
// that the attende already replied.
unset($attendee['RSVP']);
break;
}
}
}
if (!$attendeeFound) {
// Adding a new attendee. The iTip documentation calls this
// a party crasher.
$attendee = $vevent->add('ATTENDEE', $itipMessage->sender, array('PARTSTAT' => $instances[$recurId]));
if ($itipMessage->senderName) {
$attendee['CN'] = $itipMessage->senderName;
}
}
unset($instances[$recurId]);
}
}
if (!$masterObject) {
// No master object, we can't add new instances.
return null;
}
// If we got replies to instances that did not exist in the
// original list, it means that new exceptions must be created.
foreach ($instances as $recurId => $partstat) {
$recurrenceIterator = new EventIterator($existingObject, $itipMessage->uid);
$found = false;
$iterations = 1000;
do {
$newObject = $recurrenceIterator->getEventObject();
$recurrenceIterator->next();
if (isset($newObject->{'RECURRENCE-ID'}) && $newObject->{'RECURRENCE-ID'}->getValue() === $recurId) {
$found = true;
}
$iterations--;
} while ($recurrenceIterator->valid() && !$found && $iterations);
// Invalid recurrence id. Skipping this object.
if (!$found) {
continue;
}
unset($newObject->RRULE, $newObject->EXDATE, $newObject->RDATE);
$attendeeFound = false;
if (isset($newObject->ATTENDEE)) {
foreach ($newObject->ATTENDEE as $attendee) {
if ($attendee->getValue() === $itipMessage->sender) {
$attendeeFound = true;
$attendee['PARTSTAT'] = $partstat;
break;
}
}
}
if (!$attendeeFound) {
// Adding a new attendee
$attendee = $newObject->add('ATTENDEE', $itipMessage->sender, array('PARTSTAT' => $partstat));
if ($itipMessage->senderName) {
$attendee['CN'] = $itipMessage->senderName;
}
}
$existingObject->add($newObject);
}
return $existingObject;
}
/**
* @depends testValues
*/
function testOverridenEventNoValuesExpected()
{
$vcal = new VCalendar();
$ev1 = $vcal->createComponent('VEVENT');
$ev1->UID = 'overridden';
$ev1->RRULE = 'FREQ=WEEKLY;COUNT=3';
$ev1->DTSTART = '20120124T120000Z';
$ev1->SUMMARY = 'baseEvent';
$vcal->add($ev1);
// ev2 overrides an event, and puts it 6 days earlier instead.
$ev2 = $vcal->createComponent('VEVENT');
$ev2->UID = 'overridden';
$ev2->{'RECURRENCE-ID'} = '20120131T120000Z';
$ev2->DTSTART = '20120125T120000Z';
$ev2->SUMMARY = 'Override!';
$vcal->add($ev2);
$it = new EventIterator($vcal, 'overridden');
$dates = array();
$summaries = array();
// The reported problem was specifically related to the VCALENDAR
// expansion. In this parcitular case, we had to forward to the 28th of
// january.
$it->fastForward(new DateTime('2012-01-28 23:00:00'));
// We stop the loop when it hits the 6th of februari. Normally this
// iterator would hit 24, 25 (overriden from 31) and 7 feb but because
// we 'filter' from the 28th till the 6th, we should get 0 results.
while ($it->valid() && $it->getDTSTart() < new DateTime('2012-02-06 23:00:00')) {
$dates[] = $it->getDTStart();
$summaries[] = (string) $it->getEventObject()->SUMMARY;
$it->next();
}
$this->assertEquals(array(), $dates);
$this->assertEquals(array(), $summaries);
}
/**
* If this calendar object, has events with recurrence rules, this method
* can be used to expand the event into multiple sub-events.
*
* Each event will be stripped from it's recurrence information, and only
* the instances of the event in the specified timerange will be left
* alone.
*
* In addition, this method will cause timezone information to be stripped,
* and normalized to UTC.
*
* This method will alter the VCalendar. This cannot be reversed.
*
* This functionality is specifically used by the CalDAV standard. It is
* possible for clients to request expand events, if they are rather simple
* clients and do not have the possibility to calculate recurrences.
*
* @param DateTime $start
* @param DateTime $end
* @return void
*/
public function expand(\DateTime $start, \DateTime $end)
{
$newEvents = array();
foreach ($this->select('VEVENT') as $key => $vevent) {
if (isset($vevent->{'RECURRENCE-ID'})) {
unset($this->children[$key]);
continue;
}
if (!$vevent->rrule) {
unset($this->children[$key]);
if ($vevent->isInTimeRange($start, $end)) {
$newEvents[] = $vevent;
}
continue;
}
$uid = (string) $vevent->uid;
if (!$uid) {
throw new \LogicException('Event did not have a UID!');
}
$it = new EventIterator($this, $vevent->uid);
$it->fastForward($start);
while ($it->valid() && $it->getDTStart() < $end) {
if ($it->getDTEnd() > $start) {
$newEvents[] = $it->getEventObject();
}
$it->next();
}
unset($this->children[$key]);
}
// Setting all properties to UTC time.
foreach ($newEvents as $newEvent) {
foreach ($newEvent->children as $child) {
if ($child instanceof VObject\Property\ICalendar\DateTime && $child->hasTime()) {
$dt = $child->getDateTimes();
// We only need to update the first timezone, because
// setDateTimes will match all other timezones to the
// first.
$dt[0]->setTimeZone(new \DateTimeZone('UTC'));
$child->setDateTimes($dt);
}
}
$this->add($newEvent);
}
// Removing all VTIMEZONE components
unset($this->VTIMEZONE);
}
/**
* Expand all events in this VCalendar object and return a new VCalendar
* with the expanded events.
*
* If this calendar object, has events with recurrence rules, this method
* can be used to expand the event into multiple sub-events.
*
* Each event will be stripped from it's recurrence information, and only
* the instances of the event in the specified timerange will be left
* alone.
*
* In addition, this method will cause timezone information to be stripped,
* and normalized to UTC.
*
* @param DateTimeInterface $start
* @param DateTimeInterface $end
* @param DateTimeZone $timeZone reference timezone for floating dates and
* times.
* @return VCalendar
*/
function expand(DateTimeInterface $start, DateTimeInterface $end, DateTimeZone $timeZone = null)
{
$newChildren = [];
$recurringEvents = [];
if (!$timeZone) {
$timeZone = new DateTimeZone('UTC');
}
$stripTimezones = function (Component $component) use($timeZone, &$stripTimezones) {
foreach ($component->children() as $componentChild) {
if ($componentChild instanceof Property\ICalendar\DateTime && $componentChild->hasTime()) {
$dt = $componentChild->getDateTimes($timeZone);
// We only need to update the first timezone, because
// setDateTimes will match all other timezones to the
// first.
$dt[0] = $dt[0]->setTimeZone(new DateTimeZone('UTC'));
$componentChild->setDateTimes($dt);
} elseif ($componentChild instanceof Component) {
$stripTimezones($componentChild);
}
}
return $component;
};
foreach ($this->children() as $child) {
if ($child instanceof Property && $child->name !== 'PRODID') {
// We explictly want to ignore PRODID, because we want to
// overwrite it with our own.
$newChildren[] = clone $child;
} elseif ($child instanceof Component && $child->name !== 'VTIMEZONE') {
// We're also stripping all VTIMEZONE objects because we're
// converting everything to UTC.
if ($child->name === 'VEVENT' && (isset($child->{'RECURRENCE-ID'}) || isset($child->RRULE) || isset($child->RDATE))) {
// Handle these a bit later.
$uid = (string) $child->UID;
if (!$uid) {
throw new InvalidDataException('Every VEVENT object must have a UID property');
}
if (isset($recurringEvents[$uid])) {
$recurringEvents[$uid][] = clone $child;
} else {
$recurringEvents[$uid] = [clone $child];
}
} elseif ($child->name === 'VEVENT' && $child->isInTimeRange($start, $end)) {
$newChildren[] = $stripTimezones(clone $child);
}
}
}
foreach ($recurringEvents as $events) {
try {
$it = new EventIterator($events, $timeZone);
} catch (NoInstancesException $e) {
// This event is recurring, but it doesn't have a single
// instance. We are skipping this event from the output
// entirely.
continue;
}
$it->fastForward($start);
while ($it->valid() && $it->getDTStart() < $end) {
if ($it->getDTEnd() > $start) {
$newChildren[] = $stripTimezones($it->getEventObject());
}
$it->next();
}
}
return new self($newChildren);
}
/**
* Validates if a component matches the given time range.
*
* This is all based on the rules specified in rfc4791, which are quite
* complex.
*
* @param VObject\Node $component
* @param DateTime $start
* @param DateTime $end
* @return bool
*/
protected function validateTimeRange(VObject\Node $component, $start, $end)
{
if (is_null($start)) {
$start = new DateTime('1900-01-01');
}
if (is_null($end)) {
$end = new DateTime('3000-01-01');
}
switch ($component->name) {
case 'VEVENT':
case 'VTODO':
case 'VJOURNAL':
return $component->isInTimeRange($start, $end);
case 'VALARM':
// If the valarm is wrapped in a recurring event, we need to
// expand the recursions, and validate each.
//
// Our datamodel doesn't easily allow us to do this straight
// in the VALARM component code, so this is a hack, and an
// expensive one too.
if ($component->parent->name === 'VEVENT' && $component->parent->RRULE) {
// Fire up the iterator!
$it = new VObject\Recur\EventIterator($component->parent->parent, (string) $component->parent->UID);
while ($it->valid()) {
$expandedEvent = $it->getEventObject();
// We need to check from these expanded alarms, which
// one is the first to trigger. Based on this, we can
// determine if we can 'give up' expanding events.
$firstAlarm = null;
if ($expandedEvent->VALARM !== null) {
foreach ($expandedEvent->VALARM as $expandedAlarm) {
$effectiveTrigger = $expandedAlarm->getEffectiveTriggerTime();
if ($expandedAlarm->isInTimeRange($start, $end)) {
return true;
}
if ((string) $expandedAlarm->TRIGGER['VALUE'] === 'DATE-TIME') {
// This is an alarm with a non-relative trigger
// time, likely created by a buggy client. The
// implication is that every alarm in this
// recurring event trigger at the exact same
// time. It doesn't make sense to traverse
// further.
} else {
// We store the first alarm as a means to
// figure out when we can stop traversing.
if (!$firstAlarm || $effectiveTrigger < $firstAlarm) {
$firstAlarm = $effectiveTrigger;
}
}
}
}
if (is_null($firstAlarm)) {
// No alarm was found.
//
// Or technically: No alarm that will change for
// every instance of the recurrence was found,
// which means we can assume there was no match.
return false;
}
if ($firstAlarm > $end) {
return false;
}
$it->next();
}
return false;
} else {
return $component->isInTimeRange($start, $end);
}
case 'VFREEBUSY':
throw new \Sabre\DAV\Exception\NotImplemented('time-range filters are currently not supported on ' . $component->name . ' components');
case 'COMPLETED':
case 'CREATED':
case 'DTEND':
case 'DTSTAMP':
case 'DTSTART':
case 'DUE':
case 'LAST-MODIFIED':
return $start <= $component->getDateTime() && $end >= $component->getDateTime();
default:
throw new \Sabre\DAV\Exception\BadRequest('You cannot create a time-range filter on a ' . $component->name . ' component');
}
}
/**
* Processes incoming REPLY messages.
*
* The message is a reply. This is for example an attendee telling
* an organizer he accepted the invite, or declined it.
*
* @param Message $itipMessage
* @param VCalendar $existingObject
* @return VCalendar|null
*/
protected function processMessageReply(Message $itipMessage, VCalendar $existingObject = null)
{
// A reply can only be processed based on an existing object.
// If the object is not available, the reply is ignored.
if (!$existingObject) {
return null;
}
$instances = array();
foreach ($itipMessage->message->VEVENT as $vevent) {
$recurId = isset($vevent->{'RECURRENCE-ID'}) ? $vevent->{'RECURRENCE-ID'}->getValue() : 'master';
$attendee = $vevent->ATTENDEE;
$instances[$recurId] = $attendee['PARTSTAT']->getValue();
}
$masterObject = null;
foreach ($existingObject->VEVENT as $vevent) {
$recurId = isset($vevent->{'RECURRENCE-ID'}) ? $vevent->{'RECURRENCE-ID'}->getValue() : 'master';
if ($recurId === 'master') {
$masterObject = $vevent;
}
if (isset($instances[$recurId])) {
$attendeeFound = false;
if (isset($vevent->ATTENDEE)) {
foreach ($vevent->ATTENDEE as $attendee) {
if ($attendee->getValue() === $itipMessage->sender) {
$attendeeFound = true;
$attendee['PARTSTAT'] = $instances[$recurId];
break;
}
}
}
if (!$attendeeFound) {
// Adding a new attendee. The iTip documentation calls this
// a party crasher.
$attendee = $vevent->add('ATTENDEE', $itipMessage->sender, array('PARTSTAT' => $instances[$recurId]));
if ($itipMessage->senderName) {
$attendee['CN'] = $itipMessage->senderName;
}
}
unset($instances[$recurId]);
}
}
if (!$masterObject) {
// No master object, we can't add new instances.
return null;
}
// If we got replies to instances that did not exist in the
// original list, it means that new exceptions must be created.
foreach ($instances as $recurId => $partstat) {
$recurrenceIterator = new EventIterator($existingObject, $itipMessage->uid);
$found = false;
$iterations = 1000;
do {
$newObject = $recurrenceIterator->getEventObject();
$recurrenceIterator->next();
if (isset($newObject->{'RECURRENCE-ID'}) && $newObject->{'RECURRENCE-ID'}->getValue() === $recurId) {
$found = true;
}
$iterations--;
} while ($recurrenceIterator->valid() && !$found && $iterations);
// Invalid recurrence id. Skipping this object.
if (!$found) {
continue;
}
unset($newObject->RRULE, $newObject->EXDATE, $newObject->RDATE);
$newObject->{'RECURRENCE-ID'} = $recurId;
$attendeeFound = false;
if (isset($newObject->ATTENDEE)) {
foreach ($newObject->ATTENDEE as $attendee) {
if ($attendee->getValue() === $itipMessage->sender) {
$attendeeFound = true;
$attendee['PARTSTAT'] = $partstat;
break;
}
}
}
if (!$attendeeFound) {
// Adding a new attendee
$attendee = $newObject->add('ATTENDEE', $itipMessage->sender, array('PARTSTAT' => $partstat));
if ($itipMessage->senderName) {
$attendee['CN'] = $itipMessage->senderName;
}
}
$existingObject->add($newObject);
}
return $existingObject;
}
