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));
        }
Exemplo n.º 2
0
        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);
             * }*/
        }