private byte[] decrypt(TextSecureEnvelope envelope, byte[] ciphertext)
{
AxolotlAddress sourceAddress = new AxolotlAddress(envelope.getSource(), envelope.getSourceDevice());
SessionCipher sessionCipher = new SessionCipher(axolotlStore, sourceAddress);
byte[] paddedMessage;
if (envelope.isPreKeyWhisperMessage())
{
paddedMessage = sessionCipher.decrypt(new PreKeyWhisperMessage(ciphertext));
}
else if (envelope.isWhisperMessage())
{
paddedMessage = sessionCipher.decrypt(new WhisperMessage(ciphertext));
}
else
{
throw new InvalidMessageException("Unknown type: " + envelope.getType());
}
PushTransportDetails transportDetails = new PushTransportDetails(sessionCipher.getSessionVersion());
return(transportDetails.getStrippedPaddingMessageBody(paddedMessage));
}
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);
* }*/
}