private byte[] createSentTranscriptMessage(byte[] content, May <SignalServiceAddress> recipient, ulong timestamp)
{
{
try
{
Content.Builder container = Content.CreateBuilder();
SyncMessage.Builder syncMessage = SyncMessage.CreateBuilder();
SyncMessage.Types.Sent.Builder sentMessage = SyncMessage.Types.Sent.CreateBuilder();
sentMessage.SetTimestamp(timestamp);
sentMessage.SetMessage(DataMessage.ParseFrom(content));
if (recipient.HasValue)
{
sentMessage.SetDestination(recipient.ForceGetValue().getNumber());
}
return(container.SetSyncMessage(syncMessage.SetSent(sentMessage)).Build().ToByteArray());;
}
catch (InvalidProtocolBufferException e)
{
throw new Exception(e.Message);
}
}
}
/**
* Decrypt a received {@link org.whispersystems.textsecure.api.messages.TextSecureEnvelope}
*
* @param envelope The received TextSecureEnvelope
* @return a decrypted TextSecureMessage
* @throws InvalidVersionException
* @throws InvalidMessageException
* @throws InvalidKeyException
* @throws DuplicateMessageException
* @throws InvalidKeyIdException
* @throws UntrustedIdentityException
* @throws LegacyMessageException
* @throws NoSessionException
*/
public TextSecureContent decrypt(TextSecureEnvelope envelope)
{
try
{
TextSecureContent content = new TextSecureContent();
if (envelope.hasLegacyMessage())
{
DataMessage message = DataMessage.ParseFrom(decrypt(envelope, envelope.getLegacyMessage()));
content = new TextSecureContent(createTextSecureMessage(envelope, message));
}
else if (envelope.hasContent())
{
Content message = Content.ParseFrom(decrypt(envelope, envelope.getContent()));
if (message.HasDataMessage)
{
content = new TextSecureContent(createTextSecureMessage(envelope, message.DataMessage));
}
else if (message.HasSyncMessage && localAddress.getNumber().Equals(envelope.getSource()))
{
content = new TextSecureContent(createSynchronizeMessage(envelope, message.SyncMessage));
}
}
return(content);
}
catch (InvalidProtocolBufferException e)
{
throw new InvalidMessageException(e);
}
}
private byte[] createMultiDeviceSentTranscriptContent(byte[] content, May <SignalServiceAddress> recipient, ulong timestamp)
{
try
{
Content.Builder container = Content.CreateBuilder();
SyncMessage.Builder syncMessage = SyncMessage.CreateBuilder();
SyncMessage.Types.Sent.Builder sentMessage = SyncMessage.Types.Sent.CreateBuilder();
DataMessage dataMessage = DataMessage.ParseFrom(content);
sentMessage.SetTimestamp(timestamp);
sentMessage.SetMessage(dataMessage);
if (recipient.HasValue)
{
sentMessage.SetDestination(recipient.ForceGetValue().getNumber());
}
if (dataMessage.ExpireTimer > 0)
{
sentMessage.SetExpirationStartTimestamp((ulong)Util.CurrentTimeMillis());
}
return(container.SetSyncMessage(syncMessage.SetSent(sentMessage)).Build().ToByteArray());
}
catch (InvalidProtocolBufferException e)
{
throw new Exception(e.Message);
}
}