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);
        }
예제 #2
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        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");
            }
        }