private async Task <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 = await socket.getPreKeys(recipient, deviceId);
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(/*MasterSecretUnion masterSecret, */ TextSecureEnvelope envelope /*, Optional<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(/*masterSecret, */ envelope, message /*, smsMessageId*/);
}
//else if (message.isGroupUpdate()) handleGroupMessage(masterSecret, envelope, message, smsMessageId);
//else if (message.getAttachments().isPresent()) handleMediaMessage(masterSecret, envelope, message, smsMessageId);
else
{
handleTextMessage(/*masterSecret, */ 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.w(TAG, e);
//handleInvalidVersionMessage(masterSecret, envelope, smsMessageId);
}
/* catch (InvalidMessageException | InvalidKeyIdException | InvalidKeyException | MmsException e) {
* Log.w(TAG, e);
* handleCorruptMessage(masterSecret, envelope, smsMessageId);
* } catch (NoSessionException e)
* {
* Log.w(TAG, e);
* handleNoSessionMessage(masterSecret, envelope, smsMessageId);
* }
* catch (LegacyMessageException e)
* {
* Log.w(TAG, e);
* handleLegacyMessage(masterSecret, envelope, smsMessageId);
* }
* catch (DuplicateMessageException e)
* {
* Log.w(TAG, e);
* handleDuplicateMessage(masterSecret, envelope, smsMessageId);
* }
* catch (UntrustedIdentityException e)
* {
* Log.w(TAG, e);
* handleUntrustedIdentityMessage(masterSecret, envelope, smsMessageId);
* }*/
}