private OutgoingPushMessage getEncryptedMessage(PushServiceSocket socket, TextSecureAddress recipient, uint deviceId, byte[] plaintext, bool legacy)
{
AxolotlAddress axolotlAddress = new AxolotlAddress(recipient.getNumber(), deviceId);
TextSecureCipher cipher = new TextSecureCipher(localAddress, store);
if (!store.ContainsSession(axolotlAddress))
{
try
{
List<PreKeyBundle> preKeys = socket.getPreKeys(recipient, deviceId).Result;
foreach (PreKeyBundle preKey in preKeys)
{
try
{
AxolotlAddress preKeyAddress = new AxolotlAddress(recipient.getNumber(), preKey.getDeviceId());
SessionBuilder sessionBuilder = new SessionBuilder(store, preKeyAddress);
sessionBuilder.process(preKey);
}
catch (libaxolotl.exceptions.UntrustedIdentityException e)
{
throw new UntrustedIdentityException("Untrusted identity key!", recipient.getNumber(), preKey.getIdentityKey());
}
}
if (eventListener.HasValue)
{
eventListener.ForceGetValue().onSecurityEvent(recipient);
}
}
catch (InvalidKeyException e)
{
throw new Exception(e.Message);
}
}
return cipher.encrypt(axolotlAddress, plaintext, legacy);
}
private void handleMessage(TextSecureEnvelope envelope, May<long> smsMessageId)
{
try
{
AxolotlStore axolotlStore = new TextSecureAxolotlStore();
TextSecureAddress localAddress = new TextSecureAddress(TextSecurePreferences.getLocalNumber());
TextSecureCipher cipher = new TextSecureCipher(localAddress, axolotlStore);
TextSecureContent content = cipher.decrypt(envelope);
if (content.getDataMessage().HasValue)
{
TextSecureDataMessage message = content.getDataMessage().ForceGetValue();
if (message.isEndSession()) handleEndSessionMessage(envelope, message, smsMessageId);
else if (message.isGroupUpdate()) handleGroupMessage(envelope, message, smsMessageId);
else if (message.getAttachments().HasValue) handleMediaMessage(envelope, message, smsMessageId);
else handleTextMessage(envelope, message, smsMessageId);
}
/*else if (content.getSyncMessage().HasValue) TODO: SYNC enable
{
TextSecureSyncMessage syncMessage = content.getSyncMessage().ForceGetValue();
if (syncMessage.getSent().HasValue) handleSynchronizeSentMessage(masterSecret, syncMessage.getSent().ForceGetValue(), smsMessageId);
else if (syncMessage.getRequest().HasValue) handleSynchronizeRequestMessage(masterSecret, syncMessage.getRequest().ForceGetValue());
}*/
if (envelope.isPreKeyWhisperMessage())
{
App.Current.Worker.AddTaskActivities(new RefreshPreKeysTask());
//ApplicationContext.getInstance(context).getJobManager().add(new RefreshPreKeysJob(context));
}
}
catch (InvalidVersionException e)
{
Log.Warn(e);
handleInvalidVersionMessage(envelope, smsMessageId);
}
catch (InvalidMessageException e)
{
Log.Warn(e);
handleCorruptMessage(envelope, smsMessageId);
}
catch (InvalidKeyIdException e)
{
Log.Warn(e);
handleCorruptMessage(envelope, smsMessageId);
}
catch (InvalidKeyException e)
{
Log.Warn(e);
handleCorruptMessage(envelope, smsMessageId);
}
catch (NoSessionException e)
{
Log.Warn(e);
handleNoSessionMessage(envelope, smsMessageId);
}
catch (LegacyMessageException e)
{
Log.Warn(e);
handleLegacyMessage(envelope, smsMessageId);
}
catch (DuplicateMessageException e)
{
Log.Warn(e);
handleDuplicateMessage(envelope, smsMessageId);
}
catch (libaxolotl.exceptions.UntrustedIdentityException e)
{
Log.Warn(e);
handleUntrustedIdentityMessage(envelope, smsMessageId);
}
catch (Exception e)
{
Log.Warn($"Unexpected Exception");
}
}