public TextSecureAxolotlStore()
{
connection = new SQLiteConnection(new SQLite.Net.Platform.WinRT.SQLitePlatformWinRT(), AXOLOTLDB_PATH);
this.preKeyStore = new TextSecurePreKeyStore(connection);
this.signedPreKeyStore = new TextSecurePreKeyStore(connection);
this.identityKeyStore = new TextSecureIdentityKeyStore(connection);
this.sessionStore = new TextSecureSessionStore(connection);
}
/**
* Construct a SessionCipher for encrypt/decrypt operations on a session.
* In order to use SessionCipher, a session must have already been created
* and stored using {@link SessionBuilder}.
*
* @param sessionStore The {@link SessionStore} that contains a session for this recipient.
* @param remoteAddress The remote address that messages will be encrypted to or decrypted from.
*/
public SessionCipher(SessionStore sessionStore, PreKeyStore preKeyStore,
SignedPreKeyStore signedPreKeyStore, IdentityKeyStore identityKeyStore,
AxolotlAddress remoteAddress)
{
this.sessionStore = sessionStore;
this.preKeyStore = preKeyStore;
this.remoteAddress = remoteAddress;
this.sessionBuilder = new SessionBuilder(sessionStore, preKeyStore, signedPreKeyStore,
identityKeyStore, remoteAddress);
}
/**
* Construct a SessionCipher for encrypt/decrypt operations on a session.
* In order to use SessionCipher, a session must have already been created
* and stored using {@link SessionBuilder}.
*
* @param sessionStore The {@link SessionStore} that contains a session for this recipient.
* @param remoteAddress The remote address that messages will be encrypted to or decrypted from.
*/
public SessionCipher(SessionStore sessionStore, PreKeyStore preKeyStore,
SignedPreKeyStore signedPreKeyStore, IdentityKeyStore identityKeyStore,
SignalProtocolAddress remoteAddress)
{
this.sessionStore = sessionStore;
this.preKeyStore = preKeyStore;
this.remoteAddress = remoteAddress;
sessionBuilder = new SessionBuilder(sessionStore, preKeyStore, signedPreKeyStore,
identityKeyStore, remoteAddress);
}
/**
* Constructs a SessionBuilder.
*
* @param sessionStore The {@link org.whispersystems.libsignal.state.SessionStore} to store the constructed session in.
* @param preKeyStore The {@link org.whispersystems.libsignal.state.PreKeyStore} where the client's local {@link org.whispersystems.libsignal.state.PreKeyRecord}s are stored.
* @param identityKeyStore The {@link org.whispersystems.libsignal.state.IdentityKeyStore} containing the client's identity key information.
* @param remoteAddress The address of the remote user to build a session with.
*/
public SessionBuilder(SessionStore sessionStore,
PreKeyStore preKeyStore,
SignedPreKeyStore signedPreKeyStore,
IdentityKeyStore identityKeyStore,
SignalProtocolAddress remoteAddress)
{
this.sessionStore = sessionStore;
this.preKeyStore = preKeyStore;
this.signedPreKeyStore = signedPreKeyStore;
this.identityKeyStore = identityKeyStore;
this.remoteAddress = remoteAddress;
}
/**
* Constructs a SessionBuilder.
*
* @param sessionStore The {@link org.whispersystems.libaxolotl.state.SessionStore} to store the constructed session in.
* @param preKeyStore The {@link org.whispersystems.libaxolotl.state.PreKeyStore} where the client's local {@link org.whispersystems.libaxolotl.state.PreKeyRecord}s are stored.
* @param identityKeyStore The {@link org.whispersystems.libaxolotl.state.IdentityKeyStore} containing the client's identity key information.
* @param remoteAddress The address of the remote user to build a session with.
*/
public SessionBuilder(SessionStore sessionStore,
PreKeyStore preKeyStore,
SignedPreKeyStore signedPreKeyStore,
IdentityKeyStore identityKeyStore,
AxolotlAddress remoteAddress)
{
this.sessionStore = sessionStore;
this.preKeyStore = preKeyStore;
this.signedPreKeyStore = signedPreKeyStore;
this.identityKeyStore = identityKeyStore;
this.remoteAddress = remoteAddress;
}
//--------------------------------------------------------Constructor:----------------------------------------------------------------\\
#region --Constructors--
/// <summary>
/// Basic Constructor
/// </summary>
/// <history>
/// 06/08/2018 Created [Fabian Sauter]
/// </history>
public OmemoHelper(XMPPConnection2 connection)
{
this.CONNECTION = connection;
this.OMEMO_SESSIONS = new Dictionary <string, OmemoSession>();
this.MESSAGE_CACHE = new Dictionary <string, Tuple <List <OmemoMessageMessage>, OmemoSessionBuildHelper> >();
this.SESSION_STORE = new OmemoSessionStore(connection.account);
this.PRE_KEY_STORE = new OmemoPreKeyStore(connection.account);
this.SIGNED_PRE_KEY_STORE = new OmemoSignedPreKeyStore(connection.account);
this.IDENTITY_STORE = new OmemoIdentityKeyStore(connection.account);
reset();
}
public Models.Message[] GetMessages(ISharedPreferences sharedPref, User SelectedFriend, SessionStore sessionStore,
PreKeyStore preKeyStore, SignedPreKeyStore signedPreKeyStore, IdentityKeyStore identityStore, SignalProtocolAddress SelectedFriendAddress)
{
// send the server the user name
// server side does the selection and return the messages and store it in a message array.
//Send the login username and password to the server and get response
string apiUrl = "https://ycandgap.me/api_server2.php";
string apiMethod = "getMessage";
//Login_Request has two properties:username and password
Login_Request myLogin_Request = new Login_Request();
Models.Message recieveMessage = new Models.Message();
//get the login username from previow login page.
recieveMessage.MessageReceiverRegisID = Convert.ToUInt32(sharedPref.GetString("RegistrationId", string.Empty));
recieveMessage.MessageSenderRegisID = SelectedFriend.RegisterationID;
myLogin_Request.message = recieveMessage;
UserID = myLogin_Request.RegistrationID;
// make http post request
string response = Http.Post(apiUrl, new NameValueCollection()
{
{ "api_method", apiMethod },
{ "api_data", JsonConvert.SerializeObject(myLogin_Request) }
});
// decode json string to dto object
API_Response2 r = JsonConvert.DeserializeObject <API_Response2>(response);
// check response
if (r != null)
{
if (!r.IsError && !string.IsNullOrEmpty(r.MessageText))
{
SessionCipher sessionCipher = new SessionCipher(sessionStore, preKeyStore, signedPreKeyStore, identityStore, SelectedFriendAddress);
byte[] decipherMessage;
if (!sessionStore.ContainsSession(SelectedFriendAddress))
{
decipherMessage = sessionCipher.decrypt(new PreKeySignalMessage((JsonConvert.DeserializeObject <byte[]>(r.MessageText))));
}
else
{
decipherMessage = sessionCipher.decrypt(new SignalMessage((JsonConvert.DeserializeObject <byte[]>(r.MessageText))));
}
string checkMessage = Encoding.UTF8.GetString(decipherMessage);
SelectedFriend.SelectedUserMessages.Add(new Models.Message
{
MessageID = r.MessageID,
MessageSenderRegisID = r.MessageSenderRegisID,
MessageReceiverRegisID = r.MessageReceiverRegisID,
MessageText = checkMessage,
MessageTimestamp = r.MessageTimestamp
});
return(SelectedFriend.SelectedUserMessages.ToArray());
}
else
{
//if login fails, pop up an alert message. Wrong username or password or a new user
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
if (!string.IsNullOrEmpty(r.ErrorMessage))
{
dialogBuilder.SetMessage(r.ErrorMessage);
}
else
{
dialogBuilder.SetMessage("No new messages");
}
//dialogBuilder.SetPositiveButton("Ok", null);
dialogBuilder.Show();
return(null);
}
}
else
{
if (!sessionStore.ContainsSession(SelectedFriendAddress))
{
// Instantiate a SessionBuilder for a remote recipientId + deviceId tuple.
SessionBuilder sessionBuilder = new SessionBuilder(sessionStore, preKeyStore, signedPreKeyStore,
identityStore, SelectedFriendAddress);
RetrievedPreKey preKeyPublic = RetrieveSelectedFriendPublicPreKey(SelectedFriend);
IdentityKey SelectedFriendSignedPreKey = new IdentityKey(JsonConvert.DeserializeObject <byte[]>(SelectedFriend.SignedPreKey), 0);
PreKeyBundle retrievedPreKey = new PreKeyBundle(SelectedFriend.RegisterationID, 1, preKeyPublic.PrekeyID, preKeyPublic.PublicPreKey.getPublicKey()
, SelectedFriend.SignedPreKeyID, SelectedFriendSignedPreKey.getPublicKey(), JsonConvert.DeserializeObject <byte[]>(SelectedFriend.SignedPreKeySignature)
, new IdentityKey(JsonConvert.DeserializeObject <byte[]>(SelectedFriend.IdentityKey), 0));
// Build a session with a PreKey retrieved from the server.
sessionBuilder.process(retrievedPreKey);
}
return(null);
}
}
