Verificación / Autenticación por SMS de Firebase

No puedo hablar con cada integración que mencionaste, pero es posible que quieras probar otro Twilio servicios, Authy.

Recientemente hemos lanzado ejemplos de código listos para producción a través de tutoriales para ayudar a las personas a resolver este tipo de problemas.

Uno de esos ejemplos te guía a través de:

• Enviando una notificación push OneTouch a la aplicación móvil Authy o
• Enviando un token a través de la aplicación móvil Authy o
• Enviar un token de una sola vez en un mensaje de texto enviado con Authy vía Twilio.

Es el tutorial 2FA con Authy. El siguiente Nodo.js snippet muestra el extremo en espera de que el estado del usuario sea aprobado o denegado. Si el Usuario ha aprobado la solicitud OneTouch, guardaremos su sesión como confirmed, que oficialmente los registra.

Si la solicitud fue denegada, renderizamos la página /verify y le pedimos al Usuario que inicie sesión con un Token.

// Internal endpoint for checking the status of OneTouch
exports.authyStatus = function(request, response) {
    var status = (request.user) ? request.user.authyStatus : 'unverified';
    if (status == 'approved') {
        request.session.confirmed = true;
        request.session.save(function(err) {
            if (err) return error(response, 500, 
                'There was an error validating your session.');
        });
    }
    if (!request.session) {
        return error(response, 404, 'No valid session found for this user.');
    } else {
        response.send({ status: status });
    }   
};

Por lo tanto, esto de hecho requiere que tenga un servidor. Pero dado un ir en el ejemplo, esto debería ayudarlo a decidir qué funcionará mejor para su aplicación.

import android.app.Activity;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.text.TextUtils;
import android.util.Log;
import android.widget.EditText;
import android.widget.Toast;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.FirebaseException;
import com.google.firebase.FirebaseTooManyRequestsException;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseAuthInvalidCredentialsException;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.auth.PhoneAuthCredential;
import com.google.firebase.auth.PhoneAuthProvider;

import java.util.concurrent.TimeUnit;

public class PhoneAutenticationService {
public PhoneAutenticationService(Activity activity,FirebaseAuth auth) {
    this.activity = activity;
    this.mAuth = auth;
    setupCallback();
}

private static final String TAG = PhoneAutenticationService.class.getSimpleName();

private Activity activity;
private String verificationCode;
private static final String KEY_VERIFY_IN_PROGRESS = "key_verify_in_progress";

private static final int STATE_INITIALIZED = 1;
private static final int STATE_CODE_SENT = 2;
private static final int STATE_VERIFY_FAILED = 3;
private static final int STATE_VERIFY_SUCCESS = 4;
private static final int STATE_SIGNIN_FAILED = 5;
private static final int STATE_SIGNIN_SUCCESS = 6;

// [START declare_auth]
private FirebaseAuth mAuth;
// [END declare_auth]

private boolean mVerificationInProgress = false;
private String mVerificationId;
private PhoneAuthProvider.OnVerificationStateChangedCallbacks mCallbacks;
private PhoneAuthProvider.ForceResendingToken mResendToken;

protected void onSaveInstanceState(Bundle outState) {
    outState.putBoolean(KEY_VERIFY_IN_PROGRESS, mVerificationInProgress);
}

protected void onRestoreInstanceState(Bundle savedInstanceState) {
    mVerificationInProgress = savedInstanceState.getBoolean(KEY_VERIFY_IN_PROGRESS);
}


// [START on_start_check_user]
public void onStart(EditText mPhoneNumberField) {
    // Check if user is signed in (non-null) and update UI accordingly.
    FirebaseUser currentUser = mAuth.getCurrentUser();
    updateUI(currentUser);
    // [START_EXCLUDE]
    if (mVerificationInProgress && validatePhoneNumber(mPhoneNumberField)) {
        startPhoneNumberVerification(mPhoneNumberField.getText().toString());
    }
    // [END_EXCLUDE]
}
// [END on_start_check_user]

private void setupCallback(){
    mCallbacks = new PhoneAuthProvider.OnVerificationStateChangedCallbacks() {

        @Override
        public void onVerificationCompleted(PhoneAuthCredential credential) {
            // This callback will be invoked in two situations:
            // 1 - Instant verification. In some cases the phone number can be instantly
            //     verified without needing to send or enter a verification code.
            // 2 - Auto-retrieval. On some devices Google Play services can automatically
            //     detect the incoming verification SMS and perform verificaiton without
            //     user action.
            Log.d(TAG, "onVerificationCompleted:" + credential);
            // [START_EXCLUDE silent]
            mVerificationInProgress = false;
            // [END_EXCLUDE]

            // [START_EXCLUDE silent]
            // Update the UI and attempt sign in with the phone credential
            updateUI(STATE_VERIFY_SUCCESS, credential);
            // [END_EXCLUDE]
            signInWithPhoneAuthCredential(credential);
        }

        @Override
        public void onVerificationFailed(FirebaseException e) {
            // This callback is invoked in an invalid request for verification is made,
            // for instance if the the phone number format is not valid.
            Log.w(TAG, "onVerificationFailed", e);
            // [START_EXCLUDE silent]
            mVerificationInProgress = false;
            // [END_EXCLUDE]

            if (e instanceof FirebaseAuthInvalidCredentialsException) {
                // Invalid request
                // [START_EXCLUDE]
                Toast.makeText(activity,"Invalid phone number.",Toast.LENGTH_SHORT).show();
                // [END_EXCLUDE]
            } else if (e instanceof FirebaseTooManyRequestsException) {
                // The SMS quota for the project has been exceeded
                // [START_EXCLUDE]
                Toast.makeText(activity,"Quota exceeded.",Toast.LENGTH_SHORT).show();

                // [END_EXCLUDE]
            }

            // Show a message and update the UI
            // [START_EXCLUDE]
            updateUI(STATE_VERIFY_FAILED);
            // [END_EXCLUDE]
        }

        @Override
        public void onCodeSent(String verificationId,
                               PhoneAuthProvider.ForceResendingToken token) {
            // The SMS verification code has been sent to the provided phone number, we
            // now need to ask the user to enter the code and then construct a credential
            // by combining the code with a verification ID.
            Log.d(TAG, "onCodeSent:" + verificationId);
            Toast.makeText(activity,"onCodeSent:" + verificationId,Toast.LENGTH_SHORT).show();
            verificationCode = verificationId;
            // Save verification ID and resending token so we can use them later
            mVerificationId = verificationId;
            setVerificationCode(verificationId);
            mResendToken = token;

            // [START_EXCLUDE]
            // Update UI
            updateUI(STATE_CODE_SENT);
            // [END_EXCLUDE]
        }

    };
}


public void startPhoneNumberVerification(String phoneNumber) {
    // [START start_phone_auth]
    PhoneAuthProvider.getInstance().verifyPhoneNumber(
            phoneNumber,        // Phone number to verify
            60,                 // Timeout duration
            TimeUnit.SECONDS,   // Unit of timeout
            activity,               // Activity (for callback binding)
            mCallbacks);        // OnVerificationStateChangedCallbacks
    // [END start_phone_auth]

    mVerificationInProgress = true;
}



public void verifyPhoneNumberWithCode(String verificationId, String code) {
    // [START verify_with_code]
    PhoneAuthCredential credential = PhoneAuthProvider.getCredential(verificationId, code);

    // [END verify_with_code]
    signInWithPhoneAuthCredential(credential);
}

// [START resend_verification]
public void resendVerificationCode(String phoneNumber,
                                   PhoneAuthProvider.ForceResendingToken token) {
    PhoneAuthProvider.getInstance().verifyPhoneNumber(
            phoneNumber,        // Phone number to verify
            60,                 // Timeout duration
            TimeUnit.SECONDS,   // Unit of timeout
            activity,               // Activity (for callback binding)
            mCallbacks);        // resending
    // [END start_phone_auth]
}
// [END resend_verification]

// [START sign_in_with_phone]
public void signInWithPhoneAuthCredential(PhoneAuthCredential credential) {
    mAuth.signInWithCredential(credential)
            .addOnCompleteListener(activity, new OnCompleteListener<AuthResult>() {
                @Override
                public void onComplete(@NonNull Task<AuthResult> task) {
                    if (task.isSuccessful()) {
                        // Sign in success, update UI with the signed-in user's information
                        Log.d(TAG, "signInWithCredential:success");
                        Toast.makeText(activity,"signInWithCredential:success",Toast.LENGTH_SHORT).show();
                        FirebaseUser user = task.getResult().getUser();
                        // [START_EXCLUDE]
                        updateUI(STATE_SIGNIN_SUCCESS, user);
                        // [END_EXCLUDE]
                    } else {
                        // Sign in failed, display a message and update the UI
                        Log.w(TAG, "signInWithCredential:failure", task.getException());
                        if (task.getException() instanceof FirebaseAuthInvalidCredentialsException) {
                            // The verification code entered was invalid
                            // [START_EXCLUDE silent]
                            Toast.makeText(activity,"Invalid code.",Toast.LENGTH_SHORT).show();
                            // [END_EXCLUDE]
                        }
                        // [START_EXCLUDE silent]
                        // Update UI
                        updateUI(STATE_SIGNIN_FAILED);
                        // [END_EXCLUDE]
                    }
                }
            });
}
// [END sign_in_with_phone]


public void signOut() {
    mAuth.signOut();
    updateUI(STATE_INITIALIZED);
}

private void updateUI(int uiState) {
    updateUI(uiState, mAuth.getCurrentUser(), null);
}

public void updateUI(FirebaseUser user) {
    if (user != null) {
        updateUI(STATE_SIGNIN_SUCCESS, user);
    } else {
        updateUI(STATE_INITIALIZED);
    }
}

private void updateUI(int uiState, FirebaseUser user) {
    updateUI(uiState, user, null);
}

private void updateUI(int uiState, PhoneAuthCredential cred) {
    updateUI(uiState, null, cred);
}

private void updateUI(int uiState, FirebaseUser user, PhoneAuthCredential cred) {
    switch (uiState) {
        case STATE_INITIALIZED:
            // Initialized state, show only the phone number field and start button
            Toast.makeText(activity,"Initialized state",Toast.LENGTH_SHORT).show();
            break;
        case STATE_CODE_SENT:
            // Code sent state, show the verification field, the
            Toast.makeText(activity,"Code sent state",Toast.LENGTH_SHORT).show();

            break;
        case STATE_VERIFY_FAILED:
            // Verification has failed, show all options
            Toast.makeText(activity,"Verification has failed",Toast.LENGTH_SHORT).show();

            break;
        case STATE_VERIFY_SUCCESS:
            // Verification has succeeded, proceed to firebase sign in
            Toast.makeText(activity,"Verification has succeeded",Toast.LENGTH_SHORT).show();

            // Set the verification text based on the credential
            if (cred != null) {
                if (cred.getSmsCode() != null) {
                    //mVerificationField.setText(cred.getSmsCode());
                } else {
                    Toast.makeText(activity,"Invalid verification code.",Toast.LENGTH_SHORT).show();
                }
            }

            break;
        case STATE_SIGNIN_FAILED:
            // No-op, handled by sign-in check
            Toast.makeText(activity,"Sign in failed",Toast.LENGTH_SHORT).show();

            break;
        case STATE_SIGNIN_SUCCESS:
            // Np-op, handled by sign-in check
            Toast.makeText(activity,"Sign in sucesssss!!!!",Toast.LENGTH_SHORT).show();
            break;
    }

    if (user == null) {
        // Signed out

    } else {
        // Signed in
    }
}


public boolean validatePhoneNumber(EditText mPhoneNumberField) {
    String phoneNumber = mPhoneNumberField.getText().toString();
    if (TextUtils.isEmpty(phoneNumber) || phoneNumber.length()>10 || phoneNumber.length()<9) {
        Toast.makeText(activity,"Invalid phone number.",Toast.LENGTH_SHORT).show();
        return false;
    }

    return true;
}

public PhoneAuthProvider.OnVerificationStateChangedCallbacks getmCallbacks() {
    return mCallbacks;
}

public PhoneAuthProvider.ForceResendingToken getmResendToken() {
    return mResendToken;
}

public FirebaseAuth getmAuth() {
    return mAuth;
}

public String getVerificationCode() {
    return verificationCode;
}

public void setVerificationCode(String verificationCode) {
    this.verificationCode = verificationCode;
}

}

En tu actividad inicializa Firebase auth y listener

 mAuth = FirebaseAuth.getInstance();
    mAuthListener = new FirebaseAuth.AuthStateListener() {
        @Override
        public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
            FirebaseUser user = firebaseAuth.getCurrentUser();
            if (user != null) {
                Log.d(TAG, "onAuthStateChanged:signed_in:" + user.getUid());
            } else {
                Log.d(TAG, "onAuthStateChanged:signed_out");
            }
            // ...
        }
    };


    //init all auth process
    phoneAutenticationService = new PhoneAutenticationService(this,mAuth);

 @Override
public void onStart() {
    super.onStart();
    mAuth.addAuthStateListener(mAuthListener);
    getActivity().registerReceiver(smsBroadcastReceiver, filter);// define e broadcast receiver to intercept a sms verification code
}

@Override
public void onStop() {
    super.onStop();
    if (mAuthListener != null) {
        mAuth.removeAuthStateListener(mAuthListener);sms code
    }
    getActivity().unregisterReceiver(smsBroadcastReceiver);

}

Y finalmente llamar al método firebase para la autenticación

public void startAuthenticationByPhone(){
    if (!validatePhoneNumber(phoneInput)) {
        return;
    }
    startPhoneNumberVerification(phoneInput.getText().toString());

}......

Ahora phone auth está disponible en firebase.Aquí está el código para la autenticación del teléfono usando Firebase:

EditText phoneNum,Code;// two edit text one for enter phone number other for enter OTP code
Button sent_,Verify;// sent button to request for verification and verify is for to verify code
private PhoneAuthProvider.ForceResendingToken mResendToken;
private PhoneAuthProvider.OnVerificationStateChangedCallbacks mCallbacks;
private FirebaseAuth mAuth;
private String mVerificationId;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_phone_number_auth);

    phoneNum =(EditText) findViewById(R.id.fn_num);
    Code =(EditText) findViewById(R.id.code);

    sent_ =(Button)findViewById(R.id.sent_nu);
    Verify =(Button)findViewById(R.id.verify);

    callback_verificvation();               ///function initialization

    mAuth = FirebaseAuth.getInstance();
    sent_.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String num=phoneNum.getText().toString();
            startPhoneNumberVerification(num);          // call function for receive OTP 6 digit code
        }
    });
    Verify.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String code=Code.getText().toString();
            verifyPhoneNumberWithCode(mVerificationId,code);            //call function for verify code 

        }
    });
}

private void startPhoneNumberVerification(String phoneNumber) {
    // [START start_phone_auth]
    PhoneAuthProvider.getInstance().verifyPhoneNumber(
            phoneNumber,        // Phone number to verify
            60,                 // Timeout duration
            TimeUnit.SECONDS,   // Unit of timeout
            this,               // Activity (for callback binding)
            mCallbacks);        // OnVerificationStateChangedCallbacks
    // [END start_phone_auth]


}

private void signInWithPhoneAuthCredential(PhoneAuthCredential credential) {
    mAuth.signInWithCredential(credential)
            .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                @Override
                public void onComplete(@NonNull Task<AuthResult> task) {
                    if (task.isSuccessful()) {
                        // Sign in success, update UI with the signed-in user's information

                        FirebaseUser user = task.getResult().getUser();
                        Toast.makeText(getApplicationContext(), "sign in successfull", Toast.LENGTH_SHORT).show();

                    } else {
                        // Sign in failed, display a message and update the UI

                        if (task.getException() instanceof FirebaseAuthInvalidCredentialsException) {
                            // The verification code entered was invalid

                        }


                    }
                }
            });
}
private void verifyPhoneNumberWithCode(String verificationId, String code) {
    // [START verify_with_code]
    PhoneAuthCredential credential = PhoneAuthProvider.getCredential(verificationId, code);
    // [END verify_with_code]
    signInWithPhoneAuthCredential(credential);
}


private void callback_verificvation() {

    mCallbacks = new PhoneAuthProvider.OnVerificationStateChangedCallbacks() {

        @Override
        public void onVerificationCompleted(PhoneAuthCredential credential) {
            // This callback will be invoked in two situations:
            // 1 - Instant verification. In some cases the phone number can be instantly
            //     verified without needing to send or enter a verification code.
            // 2 - Auto-retrieval. On some devices Google Play services can automatically
            //     detect the incoming verification SMS and perform verificaiton without
            //     user action.





            signInWithPhoneAuthCredential(credential);
        }

        @Override
        public void onVerificationFailed(FirebaseException e) {
            // This callback is invoked in an invalid request for verification is made,
            // for instance if the the phone number format is not valid.


            if (e instanceof FirebaseAuthInvalidCredentialsException) {
                // Invalid request

            } else if (e instanceof FirebaseTooManyRequestsException) {
                // The SMS quota for the project has been exceeded

            }

            // Show a message and update the UI

        }

        @Override
        public void onCodeSent(String verificationId,
                               PhoneAuthProvider.ForceResendingToken token) {
            // The SMS verification code has been sent to the provided phone number, we
            // now need to ask the user to enter the code and then construct a credential
            // by combining the code with a verification ID.


            // Save verification ID and resending token so we can use them later
            mVerificationId = verificationId;
            mResendToken = token;


        }
    };