protected override string Execute()
{
Log.Debug("DeliveryReceiptJob : Sending delivery receipt...");
TextSecureAddress textSecureAddress = new TextSecureAddress(destination, new May<string>(relay));
messageSender.sendDeliveryReceipt(textSecureAddress, (ulong)timestamp);
return "";
}
/**
* Construct a TextSecureMessageSender.
*
* @param url The URL of the TextSecure server.
* @param trustStore The trust store containing the TextSecure server's signing TLS certificate.
* @param user The TextSecure username (eg phone number).
* @param password The TextSecure user's password.
* @param store The AxolotlStore.
* @param eventListener An optional event listener, which fires whenever sessions are
* setup or torn down for a recipient.
*/
public TextSecureMessageSender(String url, TrustStore trustStore,
String user, String password,
AxolotlStore store,
May<EventListener> eventListener, String userAgent)
{
this.socket = new PushServiceSocket(url, trustStore, new StaticCredentialsProvider(user, password, null), userAgent);
this.store = store;
this.localAddress = new TextSecureAddress(user);
this.eventListener = eventListener;
}
public async Task <PreKeyBundle> getPreKey(TextSecureAddress destination, uint deviceId)// throws IOException
{
try
{
String path = string.Format(PREKEY_DEVICE_PATH, destination.getNumber(),
deviceId.ToString());
if (destination.getRelay().HasValue)
{
path = path + "?relay=" + destination.getRelay().ForceGetValue();
}
String responseText = await makeRequest(path, "GET", null);
PreKeyResponse response = JsonUtil.fromJson <PreKeyResponse>(responseText);
if (response.getDevices() == null || response.getDevices().Count < 1)
{
throw new Exception("Empty prekey list");
}
PreKeyResponseItem device = response.getDevices()[0];
ECPublicKey preKey = null;
ECPublicKey signedPreKey = null;
byte[] signedPreKeySignature = null;
int preKeyId = -1;
int signedPreKeyId = -1;
if (device.getPreKey() != null)
{
preKeyId = (int)device.getPreKey().getKeyId();// TODO: whacky
preKey = device.getPreKey().getPublicKey();
}
if (device.getSignedPreKey() != null)
{
signedPreKeyId = (int)device.getSignedPreKey().getKeyId();// TODO: whacky
signedPreKey = device.getSignedPreKey().getPublicKey();
signedPreKeySignature = device.getSignedPreKey().getSignature();
}
return(new PreKeyBundle(device.getRegistrationId(), device.getDeviceId(), (uint)preKeyId, preKey,
(uint)signedPreKeyId, signedPreKey, signedPreKeySignature, response.getIdentityKey()));
}
/*catch (JsonUtil.JsonParseException e)
* {
* throw new IOException(e);
* }*/
catch (NotFoundException nfe)
{
throw new UnregisteredUserException(destination.getNumber(), nfe);
}
}
public override bool Equals(Object other)
{
if (other == null || !(other is TextSecureAddress))
{
return(false);
}
TextSecureAddress that = (TextSecureAddress)other;
return(equals(this.e164number, that.e164number) &&
equals(this.relay, that.relay));
}
/**
* Send a message to a single recipient.
*
* @param recipient The message's destination.
* @param message The message.
* @throws UntrustedIdentityException
* @throws IOException
*/
public async void sendMessage(TextSecureAddress recipient, TextSecureDataMessage message)
{
byte[] content = await createMessageContent(message);
ulong timestamp = message.getTimestamp();
SendMessageResponse response = sendMessage(recipient, timestamp, content, true);
if (response != null && response.getNeedsSync())
{
byte[] syncMessage = createMultiDeviceSentTranscriptContent(content, new May<TextSecureAddress>(recipient), timestamp);
sendMessage(localAddress, timestamp, syncMessage, false);
}
if (message.isEndSession())
{
store.DeleteAllSessions(recipient.getNumber());
if (eventListener.HasValue)
{
eventListener.ForceGetValue().onSecurityEvent(recipient);
}
}
}
/**
* Send a delivery receipt for a received message. It is not necessary to call this
* when receiving messages through {@link org.whispersystems.textsecure.api.TextSecureMessagePipe}.
* @param recipient The sender of the received message you're acknowledging.
* @param messageId The message id of the received message you're acknowledging.
* @throws IOException
*/
public void sendDeliveryReceipt(TextSecureAddress recipient, ulong messageId)
{
this.socket.sendReceipt(recipient.getNumber(), messageId, recipient.getRelay());
}
private void handleStaleDevices(TextSecureAddress recipient, StaleDevices staleDevices)
{
foreach (uint staleDeviceId in staleDevices.getStaleDevices())
{
store.DeleteSession(new AxolotlAddress(recipient.getNumber(), staleDeviceId));
}
}
private async void handleMismatchedDevices(PushServiceSocket socket, TextSecureAddress recipient,
MismatchedDevices mismatchedDevices)
{
try
{
foreach (uint extraDeviceId in mismatchedDevices.getExtraDevices())
{
store.DeleteSession(new AxolotlAddress(recipient.getNumber(), extraDeviceId));
}
foreach (uint missingDeviceId in mismatchedDevices.getMissingDevices())
{
PreKeyBundle preKey = await socket.getPreKey(recipient, missingDeviceId);
try
{
SessionBuilder sessionBuilder = new SessionBuilder(store, new AxolotlAddress(recipient.getNumber(), missingDeviceId));
sessionBuilder.process(preKey);
}
catch (libaxolotl.exceptions.UntrustedIdentityException e)
{
throw new UntrustedIdentityException("Untrusted identity key!", recipient.getNumber(), preKey.getIdentityKey());
}
}
}
catch (InvalidKeyException e)
{
throw new Exception(e.Message);
}
}
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 OutgoingPushMessageList getEncryptedMessages(PushServiceSocket socket,
TextSecureAddress recipient,
ulong timestamp,
byte[] plaintext,
bool legacy)
{
List<OutgoingPushMessage> messages = new List<OutgoingPushMessage>();
if (!recipient.Equals(localAddress))
{
messages.Add(getEncryptedMessage(socket, recipient, TextSecureAddress.DEFAULT_DEVICE_ID, plaintext, legacy));
}
foreach (uint deviceId in store.GetSubDeviceSessions(recipient.getNumber()))
{
messages.Add(getEncryptedMessage(socket, recipient, deviceId, plaintext, legacy));
}
return new OutgoingPushMessageList(recipient.getNumber(), timestamp, recipient.getRelay().HasValue ? recipient.getRelay().ForceGetValue() : null, messages);
}
private SendMessageResponse sendMessage(TextSecureAddress recipient, ulong timestamp, byte[] content, bool legacy)
{
for (int i = 0; i < 3; i++)
{
try
{
OutgoingPushMessageList messages = getEncryptedMessages(socket, recipient, timestamp, content,
legacy);
return socket.sendMessage(messages).Result;
}
catch (MismatchedDevicesException mde)
{
Debug.WriteLine(mde.Message, TAG);
handleMismatchedDevices(socket, recipient, mde.MismatchedDevices);
}
catch (StaleDevicesException ste)
{
//Log.w(TAG, ste);
handleStaleDevices(recipient, ste.StaleDevices);
}
catch (PushNetworkException e)
{
}
}
throw new Exception("Failed to resolve conflicts after 3 attempts!");
}
public TextSecureCipher(TextSecureAddress localAddress, AxolotlStore axolotlStore)
{
this.axolotlStore = axolotlStore;
this.localAddress = localAddress;
}
public async Task <List <PreKeyBundle> > getPreKeys(TextSecureAddress destination, uint deviceIdInteger)// throws IOException
{
try
{
String deviceId = deviceIdInteger.ToString();
if (deviceId.Equals("1"))
{
deviceId = "*";
}
String path = String.Format(PREKEY_DEVICE_PATH, destination.getNumber(), deviceId);
if (destination.getRelay().HasValue)
{
path = path + "?relay=" + destination.getRelay().ForceGetValue();
}
String responseText = await makeRequest(path, "GET", null);
PreKeyResponse response = JsonUtil.fromJson <PreKeyResponse>(responseText);
List <PreKeyBundle> bundles = new List <PreKeyBundle>();
foreach (PreKeyResponseItem device in response.getDevices())
{
ECPublicKey preKey = null;
ECPublicKey signedPreKey = null;
byte[] signedPreKeySignature = null;
int preKeyId = -1;
int signedPreKeyId = -1;
if (device.getSignedPreKey() != null)
{
signedPreKey = device.getSignedPreKey().getPublicKey();
signedPreKeyId = (int)device.getSignedPreKey().getKeyId(); // TODO: whacky
signedPreKeySignature = device.getSignedPreKey().getSignature();
}
if (device.getPreKey() != null)
{
preKeyId = (int)device.getPreKey().getKeyId();// TODO: whacky
preKey = device.getPreKey().getPublicKey();
}
bundles.Add(new PreKeyBundle(device.getRegistrationId(), device.getDeviceId(), (uint)preKeyId,
preKey, (uint)signedPreKeyId, signedPreKey, signedPreKeySignature,
response.getIdentityKey())); // TODO: whacky
}
return(bundles);
}
/*catch (JsonUtil.JsonParseException e)
* {
* throw new IOException(e);
* }*/
catch (NotFoundException nfe)
{
throw new UnregisteredUserException(destination.getNumber(), nfe);
}
}
public async Task<PreKeyBundle> getPreKey(TextSecureAddress destination, uint deviceId)// throws IOException
{
try
{
String path = string.Format(PREKEY_DEVICE_PATH, destination.getNumber(),
deviceId.ToString());
if (destination.getRelay().HasValue)
{
path = path + "?relay=" + destination.getRelay().ForceGetValue();
}
String responseText = await makeRequest(path, "GET", null);
PreKeyResponse response = JsonUtil.fromJson<PreKeyResponse>(responseText);
if (response.getDevices() == null || response.getDevices().Count < 1)
throw new Exception("Empty prekey list");
PreKeyResponseItem device = response.getDevices()[0];
ECPublicKey preKey = null;
ECPublicKey signedPreKey = null;
byte[] signedPreKeySignature = null;
int preKeyId = -1;
int signedPreKeyId = -1;
if (device.getPreKey() != null)
{
preKeyId = (int)device.getPreKey().getKeyId();// TODO: whacky
preKey = device.getPreKey().getPublicKey();
}
if (device.getSignedPreKey() != null)
{
signedPreKeyId = (int)device.getSignedPreKey().getKeyId();// TODO: whacky
signedPreKey = device.getSignedPreKey().getPublicKey();
signedPreKeySignature = device.getSignedPreKey().getSignature();
}
return new PreKeyBundle(device.getRegistrationId(), device.getDeviceId(), (uint)preKeyId, preKey,
(uint)signedPreKeyId, signedPreKey, signedPreKeySignature, response.getIdentityKey());
}
/*catch (JsonUtil.JsonParseException e)
{
throw new IOException(e);
}*/
catch (NotFoundException nfe)
{
throw new UnregisteredUserException(destination.getNumber(), nfe);
}
}
public async Task<List<PreKeyBundle>> getPreKeys(TextSecureAddress destination, uint deviceIdInteger)// throws IOException
{
try
{
String deviceId = deviceIdInteger.ToString();
if (deviceId.Equals("1"))
deviceId = "*";
String path = String.Format(PREKEY_DEVICE_PATH, destination.getNumber(), deviceId);
if (destination.getRelay().HasValue)
{
path = path + "?relay=" + destination.getRelay().ForceGetValue();
}
String responseText = await makeRequest(path, "GET", null);
PreKeyResponse response = JsonUtil.fromJson<PreKeyResponse>(responseText);
List<PreKeyBundle> bundles = new List<PreKeyBundle>();
foreach (PreKeyResponseItem device in response.getDevices())
{
ECPublicKey preKey = null;
ECPublicKey signedPreKey = null;
byte[] signedPreKeySignature = null;
int preKeyId = -1;
int signedPreKeyId = -1;
if (device.getSignedPreKey() != null)
{
signedPreKey = device.getSignedPreKey().getPublicKey();
signedPreKeyId = (int)device.getSignedPreKey().getKeyId(); // TODO: whacky
signedPreKeySignature = device.getSignedPreKey().getSignature();
}
if (device.getPreKey() != null)
{
preKeyId = (int)device.getPreKey().getKeyId();// TODO: whacky
preKey = device.getPreKey().getPublicKey();
}
bundles.Add(new PreKeyBundle(device.getRegistrationId(), device.getDeviceId(), (uint)preKeyId,
preKey, (uint)signedPreKeyId, signedPreKey, signedPreKeySignature,
response.getIdentityKey()));// TODO: whacky
}
return bundles;
}
/*catch (JsonUtil.JsonParseException e)
{
throw new IOException(e);
}*/
catch (NotFoundException nfe)
{
throw new UnregisteredUserException(destination.getNumber(), nfe);
}
}
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");
}
}