/// <summary>
/// Decrypt a received <see cref="SignalServiceEnvelope"/>
/// </summary>
/// <param name="envelope">The received SignalServiceEnvelope</param>
/// <returns>a decrypted SignalServiceContent</returns>
public SignalServiceContent decrypt(SignalServiceEnvelope envelope)
{
try
{
SignalServiceContent content = new SignalServiceContent();
if (envelope.hasLegacyMessage())
{
DataMessage message = DataMessage.ParseFrom(decrypt(envelope, envelope.getLegacyMessage()));
content = new SignalServiceContent(createSignalServiceMessage(envelope, message));
}
else if (envelope.hasContent())
{
Content message = Content.ParseFrom(decrypt(envelope, envelope.getContent()));
if (message.HasDataMessage)
{
content = new SignalServiceContent(createSignalServiceMessage(envelope, message.DataMessage));
}
else if (message.HasSyncMessage && localAddress.getNumber().Equals(envelope.getSource()))
{
content = new SignalServiceContent(createSynchronizeMessage(envelope, message.SyncMessage));
}
}
return(content);
}
catch (InvalidProtocolBufferException e)
{
throw new InvalidMessageException(e);
}
}
private void handleUntrustedIdentityMessage(SignalServiceEnvelope envelope, May <long> smsMessageId)
{
try
{
var database = DatabaseFactory.getTextMessageDatabase(); //getEncryptingSmsDatabase(context);
Recipients recipients = RecipientFactory.getRecipientsFromString(envelope.getSource(), false);
long recipientId = recipients.getPrimaryRecipient().getRecipientId();
PreKeySignalMessage whisperMessage = new PreKeySignalMessage(envelope.getLegacyMessage());
IdentityKey identityKey = whisperMessage.getIdentityKey();
String encoded = Base64.encodeBytes(envelope.getLegacyMessage());
IncomingTextMessage textMessage = new IncomingTextMessage(envelope.getSource(), envelope.getSourceDevice(),
envelope.getTimestamp(), encoded,
May <SignalServiceGroup> .NoValue);
if (!smsMessageId.HasValue)
{
IncomingPreKeyBundleMessage bundleMessage = new IncomingPreKeyBundleMessage(textMessage, encoded);
Pair <long, long> messageAndThreadId = database.InsertMessageInbox(bundleMessage);
database.SetMismatchedIdentity(messageAndThreadId.first(), recipientId, identityKey);
//MessageNotifier.updateNotification(context, masterSecret.getMasterSecret().orNull(), messageAndThreadId.second);
}
else
{
var messageId = smsMessageId.ForceGetValue();
database.UpdateMessageBody(messageId, encoded);
database.MarkAsPreKeyBundle(messageId);
database.SetMismatchedIdentity(messageId, recipientId, identityKey);
}
}
catch (InvalidMessageException e)
{
throw new InvalidOperationException(e.Message);
}
catch (InvalidVersionException e)
{
throw new InvalidOperationException(e.Message);
}
}
public long Insert(SignalServiceEnvelope envelope)
{
// TODO check if exists
var push = new Push()
{
Type = envelope.getType(),
Source = envelope.getSource(),
DeviceId = envelope.getSourceDevice(),
LegacyMessage = envelope.hasLegacyMessage() ? Base64.encodeBytes(envelope.getLegacyMessage()) : "",
Content = envelope.hasContent() ? Base64.encodeBytes(envelope.getContent()) : "",
Timestamp = TimeUtil.GetDateTime(envelope.getTimestamp())
};
try
{
conn.Insert(push);
} catch (Exception e) { Debug.WriteLine(e.Message); }
return(push.PushId);
}