// Implement OnLogin method
public void OnRegister(object sender, EventArgs e)
{
IdentityKeyPair identityKeyPair = KeyHelper.generateIdentityKeyPair();
uint registrationId = KeyHelper.generateRegistrationId(false);
List <PreKeyRecord> preKeys = KeyHelper.generatePreKeys(registrationId, 100).ToList();
Random random = new Random();
SignedPreKeyRecord signedPreKey = KeyHelper.generateSignedPreKey(identityKeyPair, Convert.ToUInt32(random.Next()));
InMemorySessionStore SessionStore = new InMemorySessionStore();
//SessionStore.StoreSession(new SignalProtocolAddress("1234", 1), new SessionRecord());
PreKeyStore PreKeyStore = new InMemoryPreKeyStore();
SignedPreKeyStore SignedPreKeyStore = new InMemorySignedPreKeyStore();
InMemoryIdentityKeyStore IdentityStore = new InMemoryIdentityKeyStore(identityKeyPair, registrationId);
// Store preKeys in PreKeyStore.
foreach (PreKeyRecord preKey in preKeys)
{
PreKeyStore.StorePreKey(preKey.getId(), preKey);
}
// Store signed prekey in SignedPreKeyStore.
SignedPreKeyStore.StoreSignedPreKey(signedPreKey.getId(), signedPreKey);
// Save stores in local Database
ISharedPreferences sharedprefs = PreferenceManager.GetDefaultSharedPreferences(this);
ISharedPreferencesEditor editor = sharedprefs.Edit();
editor.PutString("PreKeyStore", JsonConvert.SerializeObject(PreKeyStore));
editor.PutString("SignedPreKeyStore", JsonConvert.SerializeObject(SignedPreKeyStore));
List <Session> AllSessions = SessionStore.GetAllSessions();
editor.PutString("AllSessions", JsonConvert.SerializeObject(AllSessions));
editor.PutString("SessionStore", JsonConvert.SerializeObject(SessionStore));
editor.PutString("IdentityStore", JsonConvert.SerializeObject(IdentityStore));
List <TrustedKey> AllTrustedKeys = IdentityStore.GetAllTrustedKeys();
editor.PutString("AllTrustedKeys", JsonConvert.SerializeObject(AllTrustedKeys));
editor.Apply();
//var sessionStore = JsonConvert.DeserializeObject<InMemorySessionStore>(sharedprefs.GetString("SessionStore", string.Empty));
//var allSessions = JsonConvert.DeserializeObject<List<Session>>(sharedprefs.GetString("AllSessions", string.Empty));
//foreach (Session item in allSessions)
//{
// sessionStore.StoreSession(item.Name, item.DeviceID, item.array);
//}
// method to regidter in database
RequestRegister(registrationId, identityKeyPair, signedPreKey, preKeys);
StartActivity(typeof(FriendsActivity));
}
protected override void OnCreate(Bundle bundle)
{
// Getting saved data
ISharedPreferences sharedPref = PreferenceManager.GetDefaultSharedPreferences(this);
User SelectedFriend = JsonConvert.DeserializeObject <User>(sharedPref.GetString("SelectedFriend", string.Empty));
List <Models.Message> SelectedFriendMessageList = new List <Models.Message>();
SelectedFriendMessageList = JsonConvert.DeserializeObject <List <Models.Message> >(sharedPref.GetString("SelectedFriendMessageList", string.Empty));
foreach (Models.Message m in SelectedFriendMessageList)
{
SelectedFriend.SelectedUserMessages.Add(m);
}
InMemorySessionStore sessionStore = JsonConvert.DeserializeObject <InMemorySessionStore>(sharedPref.GetString("SessionStore", string.Empty));
var allSessions = JsonConvert.DeserializeObject <List <Session> >(sharedPref.GetString("AllSessions", string.Empty));
foreach (Session item in allSessions)
{
sessionStore.StoreSession(item.Name, item.DeviceID, item.array);
}
PreKeyStore preKeyStore = JsonConvert.DeserializeObject <InMemoryPreKeyStore>(sharedPref.GetString("PreKeyStore", string.Empty));
SignedPreKeyStore signedPreKeyStore = JsonConvert.DeserializeObject <InMemorySignedPreKeyStore>(sharedPref.GetString("SignedPreKeyStore", string.Empty));
InMemoryIdentityKeyStore identityStore = JsonConvert.DeserializeObject <InMemoryIdentityKeyStore>(sharedPref.GetString("IdentityStore", string.Empty));
IdentityKeyPair KeyPair = new IdentityKeyPair(JsonConvert.DeserializeObject <byte[]>(sharedPref.GetString("IdentityKeyPair", string.Empty)));
uint RegistrationID = Convert.ToUInt32(sharedPref.GetString("RegistrationId", string.Empty));
identityStore.PutValues(KeyPair, RegistrationID);
var allTrustedKeys = JsonConvert.DeserializeObject <List <TrustedKey> >(sharedPref.GetString("AllTrustedKeys", string.Empty));
foreach (TrustedKey item in allTrustedKeys)
{
identityStore.SaveIdentity(item.Name, new IdentityKey(item.Identity, 0));
}
SignalProtocolAddress SelectedFriendAddress = new SignalProtocolAddress(SelectedFriend.RegisterationID.ToString(), 1);
// Get the messages from the server
base.OnCreate(bundle);
TheirMessages = GetMessages(sharedPref, SelectedFriend, sessionStore, preKeyStore, signedPreKeyStore, identityStore, SelectedFriendAddress);
// Set our view from the "ChatList" layout resource
Title = SelectedFriend.Username;
SetContentView(Resource.Layout.Message);
listView = FindViewById <ListView>(Resource.Id.messageList);
//***display FriendsListItem in ListView using Adapter
listView.Adapter = adapter = new Adapter(this, TheirMessages, UserID);
messageText = FindViewById <EditText>(Resource.Id.messageText);
sendButton = FindViewById <Button>(Resource.Id.sendButton);
// **implement messages sending and receiving here
//listView.Adapter = adapter = new Adapter(this);
sendButton.Click += (sender, e) =>
{
SessionCipher sessionCipher = new SessionCipher(sessionStore, preKeyStore, signedPreKeyStore, identityStore, SelectedFriendAddress);
CiphertextMessage cipherMessage = sessionCipher.encrypt(Encoding.UTF8.GetBytes(messageText.Text));
SelectedFriend.SelectedUserMessages.Add(new Models.Message()
{
MessageID = 1,
MessageReceiverRegisID = SelectedFriend.RegisterationID,
MessageSenderRegisID = RegistrationID,
MessageText = messageText.Text,
MessageTimestamp = DateTime.Now
});
// Save stores in local Database
ISharedPreferences sharedprefs = PreferenceManager.GetDefaultSharedPreferences(this);
ISharedPreferencesEditor editor = sharedprefs.Edit();
SelectedFriendMessageList.Clear();
foreach (Models.Message m in SelectedFriend.SelectedUserMessages)
{
SelectedFriendMessageList.Add(m);
}
editor.PutString("SelectedFriendMessageList", JsonConvert.SerializeObject(SelectedFriendMessageList));
editor.PutString("SelectedFriend", JsonConvert.SerializeObject(SelectedFriend));
editor.PutString("PreKeyStore", JsonConvert.SerializeObject(preKeyStore));
editor.PutString("SignedPreKeyStore", JsonConvert.SerializeObject(signedPreKeyStore));
List <Session> AllSessions = sessionStore.GetAllSessions();
editor.PutString("AllSessions", JsonConvert.SerializeObject(AllSessions));
editor.PutString("SessionStore", JsonConvert.SerializeObject(sessionStore));
editor.PutString("IdentityStore", JsonConvert.SerializeObject(identityStore));
List <TrustedKey> AllTrustedKeys = identityStore.GetAllTrustedKeys();
editor.PutString("AllTrustedKeys", JsonConvert.SerializeObject(AllTrustedKeys));
editor.Apply();
Models.Message message = new Models.Message();
message.MessageID = 4;
message.MessageReceiverRegisID = SelectedFriend.RegisterationID;
message.MessageSenderRegisID = Convert.ToUInt32(sharedPref.GetString("RegistrationId", string.Empty));
message.MessageText = JsonConvert.SerializeObject(cipherMessage.serialize());
message.MessageTimestamp = DateTime.Now;
// call SendMessage() to send the
SendMessage(message);
// *display the messages in user's own screen using adapter (always display in MyMessageListItem).
adapter.NotifyDataSetInvalidated();
listView.SetSelection(adapter.Count);
};
}
