private IQ SetRoster(XmppStream stream, IQ iq, XmppHandlerContext context)
{
var answer = new IQ(IqType.result);
answer.Id = iq.Id;
answer.To = iq.From;
answer.From = iq.To;
iq.Id = UniqueId.CreateNewId();
var roster = (Roster)iq.Query;
UserRosterItem item = null;
try
{
var rosterItems = roster.GetRoster();
if (rosterItems.Length != 1) throw new JabberException(ErrorCode.BadRequest);
var rosterItem = rosterItems[0];
item = UserRosterItem.FromRosterItem(rosterItem);
if (rosterItem.Subscription == SubscriptionType.remove)
{
context.StorageManager.RosterStorage.RemoveRosterItem(iq.From, item.Jid);
//Send presences
var unsubscribe = new Presence() { Type = PresenceType.unsubscribe, To = item.Jid, From = iq.From };
var unsubscribed = new Presence() { Type = PresenceType.unsubscribed, To = item.Jid, From = iq.From };
var unavailable = new Presence() { Type = PresenceType.unavailable, To = item.Jid, From = iq.From };
bool sended = false;
foreach (var session in context.SessionManager.GetBareJidSessions(item.Jid))
{
if (session.RosterRequested)
{
context.Sender.SendTo(session, unsubscribe);
context.Sender.SendTo(session, unsubscribed);
sended = true;
}
context.Sender.SendTo(session, unavailable);
}
if (!sended)
{
context.StorageManager.OfflineStorage.SaveOfflinePresence(unsubscribe);
context.StorageManager.OfflineStorage.SaveOfflinePresence(unsubscribed);
}
}
else
{
item = context.StorageManager.RosterStorage.SaveRosterItem(iq.From, item);
roster.RemoveAllChildNodes();
roster.AddRosterItem(item.ToRosterItem());
}
//send all available user's resources
context.Sender.Broadcast(context.SessionManager.GetBareJidSessions(iq.From), iq);
}
catch (System.Exception)
{
roster.RemoveAllChildNodes();
item = context.StorageManager.RosterStorage.GetRosterItem(iq.From, item.Jid);
if (item != null)
{
roster.AddRosterItem(item.ToRosterItem());
context.Sender.Broadcast(context.SessionManager.GetBareJidSessions(iq.From), iq);
}
throw;
}
return answer;
}
