/**
* The actual ChangesSink.
* For max. the $timeout value this method should block and if no changes
* are available return an empty array.
* If changes are available a list of folderids is expected.
*
* @param int $timeout max. amount of seconds to block
*
* @access public
* @return array
*/
public function ChangesSink($timeout = 30)
{
$notifications = array();
$stopat = time() + $timeout - 1;
//We can get here and the ChangesSink not be initialized yet
if (!$this->changessinkinit) {
ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendCalDAV->ChangesSink - Not initialized ChangesSink, sleep and exit"));
// We sleep and do nothing else
sleep($timeout);
return $notifications;
}
// only check once to reduce pressure in the DAV server
foreach ($this->sinkdata as $k => $v) {
$changed = false;
$url = $this->_caldav_path . substr($k, 1) . "/";
$response = $this->_caldav->GetSync($url, false, CALDAV_SUPPORTS_SYNC);
if (CALDAV_SUPPORTS_SYNC) {
if (count($response) > 0) {
$changed = true;
ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendCalDAV->ChangesSink - Changes detected"));
}
} else {
// If the numbers of events are different, we know for sure, there are changes
if (count($response) != count($v)) {
$changed = true;
ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendCalDAV->ChangesSink - Changes detected"));
} else {
// If the numbers of events are equals, we compare the biggest date
// FIXME: we are comparing strings no dates
if (!isset($this->sinkmax[$k])) {
$this->sinkmax[$k] = '';
for ($i = 0; $i < count($v); $i++) {
if ($v[$i]['getlastmodified'] > $this->sinkmax[$k]) {
$this->sinkmax[$k] = $v[$i]['getlastmodified'];
}
}
}
for ($i = 0; $i < count($response); $i++) {
if ($response[$i]['getlastmodified'] > $this->sinkmax[$k]) {
$changed = true;
}
}
if ($changed) {
ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendCalDAV->ChangesSink - Changes detected"));
}
}
}
if ($changed) {
$notifications[] = $k;
}
}
// Wait to timeout
if (empty($notifications)) {
while ($stopat > time()) {
sleep(1);
}
}
return $notifications;
}
define('LOGLEVEL', LOGLEVEL_DEBUG);
define('LOGUSERLEVEL', LOGLEVEL_DEVICEID);
// $username = "******";
// $password = "******";
//
// define('CALDAV_SERVER', 'http://sogo-demo.inverse.ca');
// define('CALDAV_PORT', '80');
// define('CALDAV_PATH', '/SOGo/dav/%u/Calendar/');
// define('CALDAV_PERSONAL', 'personal');
// define('CALDAV_SUPPORTS_SYNC', true);
$caldav_path = str_replace('%u', $username, CALDAV_PATH);
$caldav = new CalDAVClient(CALDAV_SERVER . ":" . CALDAV_PORT . $caldav_path, $username, $password);
printf("Connected %d\n", $caldav->CheckConnection());
// Show options supported by server
$options = $caldav->DoOptionsRequest();
print_r($options);
$calendars = $caldav->FindCalendars();
print_r($calendars);
$path = $caldav_path . CALDAV_PERSONAL . "/";
$val = $caldav->GetCalendarDetails($path);
print_r($val);
$begin = gmdate("Ymd\\THis\\Z", time() - 24 * 7 * 60 * 60);
$finish = gmdate("Ymd\\THis\\Z", 2147483647);
$msgs = $caldav->GetEvents($begin, $finish, $path);
print_r($msgs);
// Initial sync
$results = $caldav->GetSync($path, true, CALDAV_SUPPORTS_SYNC);
print_r($results);
sleep(60);
$results = $caldav->GetSync($path, false, CALDAV_SUPPORTS_SYNC);
print_r($results);
