//--------------------------------------------------------Constructor:----------------------------------------------------------------\\
#region --Constructors--
/// <summary>
/// Basic Constructor
/// </summary>
/// <history>
/// 10/08/2018 Created [Fabian Sauter]
/// </history>
internal OmemoSessionBuildHelper(string chatJid, string bareAccountJid, string fullAccountJid, Action <OmemoSessionBuildHelper, OmemoSessionBuildResult> onSessionResult, XMPPConnection2 connection, OmemoHelper omemoHelper)
{
this.CONNECTION = connection;
this.ON_SESSION_RESULT = onSessionResult;
this.CHAT_JID = chatJid;
this.BARE_ACCOUNT_JID = bareAccountJid;
this.FULL_ACCOUNT_JID = fullAccountJid;
this.OMEMO_HELPER = omemoHelper;
this.STATE = OmemoSessionBuildHelperState.NOT_STARTED;
this.requestDeviceListHelper = null;
this.requestBundleInfoHelper = null;
this.SESSION = new OmemoSession(chatJid);
this.curAddress = null;
}
//--------------------------------------------------------Misc Methods:---------------------------------------------------------------\\
#region --Misc Methods (Public)--
public async Task <OmemoSessionBuildResult> buildSessionAsync(OmemoDeviceListSubscriptionState subscriptionState)
{
sessionBuildResult = null;
IList <SignalProtocolAddress> devicesOwn = getOwnOmemoDevices();
IList <SignalProtocolAddress> devicesRemote = null;
if (subscriptionState == OmemoDeviceListSubscriptionState.SUBSCRIBED)
{
// Because we are subscribed, the device list should be up to date:
devicesRemote = OMEMO_HELPER.OMEMO_STORE.LoadDevices(CHAT_JID);
}
if (devicesRemote is null || devicesRemote.Count <= 0)
{
// Request devices and try to subscribe to list:
devicesRemote = await requestDeviceListAsync();
if (devicesRemote is null)
{
return(sessionBuildResult);
}
// Does not have to be successful:
await subscribeToDeviceListAsync();
}
// Build sessions for all devices:
OmemoSession session = new OmemoSession(CHAT_JID);
await buildSessionForDevicesAsync(session.DEVICE_SESSIONS_REMOTE, devicesRemote);
if (session.DEVICE_SESSIONS_REMOTE.Count > 0)
{
await buildSessionForDevicesAsync(session.DEVICE_SESSIONS_OWN, devicesOwn);
sessionBuildResult = new OmemoSessionBuildResult(session);
}
else
{
Logger.Error("Failed to establish OMEMO session with: " + CHAT_JID + ". Target does not support OMEMO - not enough OMEMO sessions!");
sessionBuildResult = new OmemoSessionBuildResult(OmemoSessionBuildError.TARGET_DOES_NOT_SUPPORT_OMEMO);
}
return(sessionBuildResult);
}
