/**
* Sets the backend to be used by the wrappers. This is used to check for permissions.
* The calls made are not part of IBackend, but are implemented by BackendZarafa only.
*
* @param IBackend $backend
*/
public static function SetBackend($backend)
{
self::$backend = $backend;
}
/**
* Returns a status indication of the folder.
* If there are changes in the folder, the returned value must change.
* The returned values are compared with '===' to determine if a folder needs synchronization or not.
*
* @param string $store the store where the folder resides
* @param string $folderid the folder id
*
* @access public
* @return string
*/
public function GetFolderStat($store, $folderid)
{
list($user, $domain) = Utils::SplitDomainUser($store);
if ($user === false) {
$user = $this->mainUser;
}
// if there is a ReplyBackImExporter, the exporter needs to run!
$wrapper = KopanoChangesWrapper::GetWrapper($user, false, null, $folderid, null);
if ($wrapper && $wrapper->HasReplyBackExporter()) {
return "replyback-" . time();
}
if (!isset($this->folderStatCache[$user])) {
$this->folderStatCache[$user] = array();
}
// if there is nothing in the cache for a store, load the data for all folders of it
if (empty($this->folderStatCache[$user])) {
// get the store
$userstore = $this->openMessageStore($user);
$rootfolder = mapi_msgstore_openentry($userstore);
$hierarchy = mapi_folder_gethierarchytable($rootfolder, CONVENIENT_DEPTH);
$rows = mapi_table_queryallrows($hierarchy, array(PR_SOURCE_KEY, PR_LOCAL_COMMIT_TIME_MAX, PR_CONTENT_COUNT, PR_CONTENT_UNREAD, PR_DELETED_MSG_COUNT));
if (count($rows) == 0) {
ZLog::Write(LOGLEVEL_INFO, sprintf("KopanoBackend->GetFolderStat(): could not access folder statistics for user '%s'. Probably missing 'read' permissions on the root folder! Folders of this store will be synchronized ONCE per hour only!", $user));
}
foreach ($rows as $folder) {
$commit_time = isset($folder[PR_LOCAL_COMMIT_TIME_MAX]) ? $folder[PR_LOCAL_COMMIT_TIME_MAX] : "0000000000";
$content_count = isset($folder[PR_CONTENT_COUNT]) ? $folder[PR_CONTENT_COUNT] : -1;
$content_unread = isset($folder[PR_CONTENT_UNREAD]) ? $folder[PR_CONTENT_UNREAD] : -1;
$content_deleted = isset($folder[PR_DELETED_MSG_COUNT]) ? $folder[PR_DELETED_MSG_COUNT] : -1;
$this->folderStatCache[$user][bin2hex($folder[PR_SOURCE_KEY])] = $commit_time . "/" . $content_count . "/" . $content_unread . "/" . $content_deleted;
}
ZLog::Write(LOGLEVEL_DEBUG, sprintf("KopanoBackend->GetFolderStat() fetched status information of %d folders for store '%s'", count($this->folderStatCache[$user]), $user));
}
if (isset($this->folderStatCache[$user][$folderid])) {
return $this->folderStatCache[$user][$folderid];
} else {
// a timestamp that changes once per hour is returned in case there is no data found for this folder. It will be synchronized only once per hour.
return gmdate("Y-m-d-H");
}
}
