package de.devland.masterpassword.ui; import android.annotation.SuppressLint; import android.annotation.TargetApi; import android.app.Dialog; import android.content.Intent; import android.graphics.Color; import android.graphics.Typeface; import android.graphics.drawable.Drawable; import android.hardware.fingerprint.FingerprintManager; import android.os.Build; import android.os.Bundle; import android.os.CancellationSignal; import android.support.annotation.NonNull; import android.support.v4.app.DialogFragment; import android.support.v4.app.Fragment; import android.support.v4.content.ContextCompat; import android.support.v4.graphics.drawable.DrawableCompat; import android.support.v4.util.Pair; import android.support.v7.app.AlertDialog; import android.text.Editable; import android.text.TextWatcher; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.EditText; import android.widget.ImageView; import android.widget.TextView; import com.lambdaworks.crypto.SCryptUtil; import com.lyndir.lhunath.opal.system.util.StringUtils; import javax.crypto.Cipher; import butterknife.BindView; import butterknife.ButterKnife; import butterknife.OnClick; import de.devland.esperandro.Esperandro; import de.devland.masterpassword.App; import de.devland.masterpassword.R; import de.devland.masterpassword.base.ui.BaseFragment; import de.devland.masterpassword.base.util.SnackbarUtil; import de.devland.masterpassword.prefs.DefaultPrefs; import de.devland.masterpassword.util.FingerprintException; import de.devland.masterpassword.util.FingerprintUtil; import de.devland.masterpassword.util.GenerateUserKeysAsyncTask; import de.devland.masterpassword.util.Identicon; import de.devland.masterpassword.util.MasterPasswordHolder; import de.devland.masterpassword.util.ShowCaseManager; import lombok.NoArgsConstructor; import static android.content.Context.FINGERPRINT_SERVICE; /** * A simple {@link Fragment} subclass. */ @NoArgsConstructor public class LoginFragment extends BaseFragment { @BindView(R.id.editText_masterPassword) protected EditText masterPassword; @BindView(R.id.editText_fullName) protected EditText fullName; @BindView(R.id.textView_identicon) protected TextView identicon; @BindView(R.id.imageView_login) protected ImageView loginButton; @BindView(R.id.imageView_fingerprint) protected ImageView fingerprintIcon; protected DefaultPrefs defaultPrefs; protected TextWatcher credentialsChangeWatcher = new IdenticonUpdater(); private CancellationSignal cancellationSignal; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); defaultPrefs = Esperandro.getPreferences(DefaultPrefs.class, getActivity()); if (!MasterPasswordHolder.INSTANCE.needsLogin(false)) { Intent intent = new Intent(getActivity(), PasswordViewActivity.class); getActivity().startActivity(intent); getActivity().finish(); } } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_login, container, false); ButterKnife.bind(this, rootView); Drawable wrapped = DrawableCompat.wrap(ContextCompat.getDrawable(getContext(), R.drawable.ic_go)); DrawableCompat.setTint(wrapped, ContextCompat.getColor(getContext(), R.color.login_icon_tint)); loginButton.setImageDrawable(wrapped); wrapped = DrawableCompat.wrap(ContextCompat.getDrawable(getContext(), R.drawable.ic_fingerprint_black_24dp)); DrawableCompat.setTint(wrapped, ContextCompat.getColor(getContext(), R.color.login_icon_tint)); fingerprintIcon.setImageDrawable(wrapped); return rootView; } @SuppressWarnings("MissingPermission") @TargetApi(Build.VERSION_CODES.M) @Override public void onResume() { super.onResume(); if (!(defaultPrefs.fingerprintEnabled() && FingerprintUtil.canUseFingerprint(false))) { fingerprintIcon.setVisibility(View.GONE); } else { try { final Drawable fingerprint = fingerprintIcon.getDrawable(); FingerprintManager fingerprintManager = (FingerprintManager) App.get().getSystemService(FINGERPRINT_SERVICE); FingerprintManager.CryptoObject crypto = new FingerprintManager.CryptoObject(FingerprintUtil.initDecryptCipher(defaultPrefs.encryptionIV())); cancellationSignal = new CancellationSignal(); fingerprintManager.authenticate(crypto, cancellationSignal, 0, new FingerprintManager.AuthenticationCallback() { @Override public void onAuthenticationError(int errorCode, CharSequence errString) { super.onAuthenticationError(errorCode, errString); if (fingerprint != null) { DrawableCompat.setTint(fingerprint, Color.RED); } SnackbarUtil.showLong(App.get().getCurrentForegroundActivity(), errString.toString()); } @Override public void onAuthenticationHelp(int helpCode, CharSequence helpString) { super.onAuthenticationHelp(helpCode, helpString); if (fingerprint != null) { DrawableCompat.setTint(fingerprint, Color.YELLOW); } SnackbarUtil.showLong(App.get().getCurrentForegroundActivity(), helpString.toString()); } @Override public void onAuthenticationSucceeded(FingerprintManager.AuthenticationResult result) { super.onAuthenticationSucceeded(result); Cipher cipher = result.getCryptoObject().getCipher(); Pair<String, String> secret = FingerprintUtil.tryDecrypt(cipher, defaultPrefs.encrypted()); if (secret != null) { String password = secret.first; String name = secret.second; doLogin(name, password); } else { DrawableCompat.setTint(fingerprint, Color.RED); // TODO message } } @Override public void onAuthenticationFailed() { super.onAuthenticationFailed(); if (fingerprint != null) { DrawableCompat.setTint(fingerprint, Color.RED); } } }, null); } catch (FingerprintException e) { Throwable cause = e.getCause(); if (cause.getClass().getSimpleName().equals("KeyPermanentlyInvalidatedException")) { FingerprintUtil.resetFingerprintSettings(); SnackbarUtil.showLong(getActivity(), R.string.msg_fingerprint_changed); } else { SnackbarUtil.showLong(getActivity(), e.getMessage()); } } } } @TargetApi(Build.VERSION_CODES.JELLY_BEAN) @Override public void onPause() { super.onPause(); if (cancellationSignal != null) { cancellationSignal.cancel(); } } @Override public void onViewCreated(View view, Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); Typeface typeface = Typeface .createFromAsset(getActivity().getAssets(), "fonts/Emoticons-Regular.ttf"); identicon.setTypeface(typeface); fullName.addTextChangedListener(credentialsChangeWatcher); masterPassword.addTextChangedListener(credentialsChangeWatcher); if (defaultPrefs.saveUserName()) { fullName.setText(defaultPrefs.defaultUserName()); } ShowCaseManager.INSTANCE.showLoginShowCase(getActivity(), masterPassword); } @OnClick(R.id.imageView_login) public void onClick() { if (checkInputs()) { if (defaultPrefs.saveUserName()) { defaultPrefs.defaultUserName(fullName.getText().toString()); } doLogin(fullName.getText().toString(), masterPassword.getText().toString()); } } private void doLogin(String fullName, String password) { GenerateUserKeysAsyncTask keysAsyncTask = new GenerateUserKeysAsyncTask(getActivity(), new Runnable() { @Override public void run() { Intent intent = new Intent(getActivity(), PasswordViewActivity.class); getActivity().startActivity(intent); getActivity().finish(); } }); keysAsyncTask .execute(fullName, password); } private boolean checkInputs() { boolean result = true; if (masterPassword.getText() == null || masterPassword.getText().toString().equals("")) { result = false; masterPassword.setError(getActivity().getString(R.string.errorEmpty)); } else if (fullName.getText() == null || fullName.getText().toString().equals("")) { result = false; fullName.setError(getActivity().getString(R.string.errorEmpty)); } else if (defaultPrefs.verifyPassword()) { try { result = SCryptUtil .check(masterPassword.getText().toString(), defaultPrefs.masterPasswordHash()); if (!result) { masterPassword.setError(getActivity().getString(R.string.error_incorrectPassword)); } } catch (Exception e) { result = false; defaultPrefs.masterPasswordHash(null); defaultPrefs.verifyPassword(false); VerificationFailedDialog verificationFailedDialog = new VerificationFailedDialog(); verificationFailedDialog.show(getActivity().getSupportFragmentManager(), null); } } return result; } public class IdenticonUpdater implements TextWatcher { @Override public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) { } @Override public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) { } @Override public void afterTextChanged(Editable editable) { String password = masterPassword.getText().toString(); String name = fullName.getText().toString(); if (defaultPrefs.showCanary()) { if (!StringUtils.isEmpty(password) && !StringUtils.isEmpty(name)) { Identicon mpIdenticon = new Identicon(name, password); identicon.setText(mpIdenticon.getText()); int textColor = mpIdenticon.getColor().getColorCode(); identicon.setTextColor(textColor); } else { identicon.setText(""); } } } } @SuppressLint("ValidFragment") public static class VerificationFailedDialog extends DialogFragment { @NonNull @Override public Dialog onCreateDialog(Bundle savedInstanceState) { AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); builder.setPositiveButton(android.R.string.ok, null); builder.setTitle(R.string.title_verifyError); builder.setMessage(R.string.msg_verifyError); Dialog dialog = builder.create(); return dialog; } } }