private async Task HandleMessage(SignalServiceEnvelope envelope)
{
var cipher = new SignalServiceCipher(new SignalServiceAddress(SignalLibHandle.Instance.Store.Username), new Store(), LibUtils.GetCertificateValidator());
// TODO: Starting to get messages of an unknown type which causes Decrypt to return null, so handle the null case for now.
var content = cipher.Decrypt(envelope);
long timestamp = Util.CurrentTimeMillis();
if (content == null)
{
//TODO callmessages
Logger.LogWarning("HandleMessage() received unrecognized message");
return;
}
if (content.Message != null)
{
SignalServiceDataMessage message = content.Message;
if (message.EndSession)
{
await HandleSessionResetMessage(envelope, content, message, false, timestamp);
}
else if (message.IsGroupUpdate())
{
if (message.Group.Type == SignalServiceGroup.GroupType.UPDATE)
{
await HandleGroupUpdateMessage(envelope, content, message, false, timestamp);
}
else if (message.Group.Type == SignalServiceGroup.GroupType.QUIT)
{
await HandleGroupLeaveMessage(envelope, content, message, false, timestamp);
}
else if (message.Group.Type == SignalServiceGroup.GroupType.REQUEST_INFO)
{
Logger.LogWarning("Received REQUEST_INFO request");
}
}
else if (message.ExpirationUpdate)
{
await HandleExpirationUpdateMessage(envelope, content, message, false, timestamp);
}
else
{
await HandleSignalMessage(envelope, content, message, false, timestamp);
}
}
else if (content.SynchronizeMessage != null)
{
if (content.SynchronizeMessage.Sent != null)
{
var syncMessage = content.SynchronizeMessage.Sent;
var dataMessage = syncMessage.Message;
if (dataMessage.EndSession)
{
await HandleSessionResetMessage(envelope, content, dataMessage, true, timestamp);
}
else if (dataMessage.IsGroupUpdate())
{
if (dataMessage.Group.Type == SignalServiceGroup.GroupType.UPDATE)
{
await HandleGroupUpdateMessage(envelope, content, dataMessage, true, timestamp);
}
else if (dataMessage.Group.Type == SignalServiceGroup.GroupType.QUIT)
{
await HandleGroupLeaveMessage(envelope, content, dataMessage, true, timestamp);
}
else if (dataMessage.Group.Type == SignalServiceGroup.GroupType.REQUEST_INFO)
{
Logger.LogWarning("Received synced REQUEST_INFO request");
}
}
else if (dataMessage.ExpirationUpdate)
{
await HandleExpirationUpdateMessage(envelope, content, dataMessage, true, timestamp);
}
else
{
await HandleSignalMessage(envelope, content, dataMessage, true, timestamp);
}
}
else if (content.SynchronizeMessage.Reads != null)
{
var readMessages = content.SynchronizeMessage.Reads;
foreach (var readMessage in readMessages)
{
try
{
await HandleSyncedReadMessage(readMessage);
}
catch (Exception e)
{
Logger.LogError("HandleReadMessage failed: {0}\n{1}", e.Message, e.StackTrace);
}
}
}
else if (content.SynchronizeMessage.BlockedList != null)
{
List <string> blockedNumbers = content.SynchronizeMessage.BlockedList.Numbers;
await HandleBlockedNumbers(blockedNumbers);
}
else if (content.SynchronizeMessage.Groups != null)
{
Logger.LogInformation("HandleMessage() handling groups sync message from device {0}", envelope.GetSourceDevice());
int read;
var avatarBuffer = new byte[4096];
var groups = content.SynchronizeMessage.Groups;
using (var tmpFile = LibUtils.CreateTmpFile("groups_sync"))
{
var plaintextStream = await MessageReceiver.RetrieveAttachment(Token, groups.AsPointer(), tmpFile, 10000, null);
var deviceGroupsStream = new DeviceGroupsInputStream(plaintextStream);
var groupsList = new List <(SignalGroup, IList <string>)>();
DeviceGroup g;
while ((g = deviceGroupsStream.Read()) != null)
{
if (g.Avatar != null)
{
SignalServiceAttachmentStream ssas = g.Avatar.AsStream();
while ((read = ssas.InputStream.Read(avatarBuffer, 0, avatarBuffer.Length)) > 0)
{
}
}
var group = new SignalGroup()
{
ThreadDisplayName = g.Name,
ThreadId = Base64.EncodeBytes(g.Id),
GroupMemberships = new List <GroupMembership>(),
CanReceive = true,
ExpiresInSeconds = g.ExpirationTimer != null ? g.ExpirationTimer.Value : 0
};
groupsList.Add((group, g.Members));
}
List <SignalConversation> dbGroups = await SignalDBContext.InsertOrUpdateGroups(groupsList);
await SignalLibHandle.Instance.DispatchAddOrUpdateConversations(dbGroups);
}
}
else if (content.SynchronizeMessage.Contacts != null && content.SynchronizeMessage.Contacts.Complete) //TODO incomplete updates
{
Logger.LogInformation("HandleMessage() handling contacts sync message from device {0}", envelope.GetSourceDevice());
int read;
var avatarBuffer = new byte[4096];
ContactsMessage contacts = content.SynchronizeMessage.Contacts;
using (var tmpFile = LibUtils.CreateTmpFile("contacts_sync"))
{
var plaintextStream = await MessageReceiver.RetrieveAttachment(Token, contacts.Contacts.AsPointer(), tmpFile, 10000, null);
var deviceContactsStream = new DeviceContactsInputStream(plaintextStream);
List <SignalContact> contactsList = new List <SignalContact>();
DeviceContact c;
while ((c = deviceContactsStream.Read()) != null)
{
if (c.Avatar != null)
{
SignalServiceAttachmentStream ssas = c.Avatar.AsStream();
while ((read = ssas.InputStream.Read(avatarBuffer, 0, avatarBuffer.Length)) > 0)
{
}
}
SignalContact contact = new SignalContact()
{
ThreadDisplayName = c.Name,
ThreadId = c.Number,
Color = c.Color,
CanReceive = true,
ExpiresInSeconds = c.ExpirationTimer != null ? c.ExpirationTimer.Value : 0
};
contactsList.Add(contact);
}
var dbContacts = SignalDBContext.InsertOrUpdateContacts(contactsList);
await SignalLibHandle.Instance.DispatchAddOrUpdateConversations(dbContacts);
}
}
}
else if (content.ReadMessage != null)
{
SignalServiceReceiptMessage receiptMessage = content.ReadMessage;
Logger.LogTrace("HandleMessage() received ReceiptMessage (type={0}, when={1})", receiptMessage.ReceiptType, receiptMessage.When);
}
else
{
//TODO callmessages
Logger.LogWarning("HandleMessage() received unrecognized message");
}
}