Files
app_Settings/src/com/android/settings/ConfirmDeviceCredentialBaseFragment.java
Victor Chang 5e0a46bff6 Fix Continous loop in unifed screenlock when trying to Trust a CA cert
Cause: with unified screenlock, ConfirmDeviceCredentialActivity didn't
forward result with FLAG_ACTIVITY_FORWARD_RESULT

Also, fixed that ConfirmDeviceCredentialActivity didn't allow fingerprint
authenication in unified screenlock after keystore unlocked.

In ChooseLockSettingsHelper, add one new util function to allow
extra option to set returnCredentials to false while external to true.

Set StrongAuth to "not required" when it has been successfully unlocked.

Test:
1. PO Unified Screenlock/Work Challenge x fingerprint -> ok to trust cert
   (Also, no credential is returned in intent)
2. WorkMode off -> Reboot -> turn on Work mode
   -> no fingerprint option, PIN unlock successful to turn work mode on

Bug: 28752364
Change-Id: I6dc8865e8f005545f8577d7731afb4495647062b
2016-05-20 19:10:33 +01:00

336 lines
14 KiB
Java

/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.settings;
import android.annotation.Nullable;
import android.app.ActivityManager;
import android.app.ActivityManagerNative;
import android.app.ActivityOptions;
import android.app.AlertDialog;
import android.app.IActivityManager;
import android.app.admin.DevicePolicyManager;
import android.app.trust.TrustManager;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.IntentSender;
import android.graphics.Point;
import android.graphics.PorterDuff;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.os.RemoteException;
import android.os.UserManager;
import android.security.KeyStore;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.TextView;
import com.android.internal.widget.LockPatternUtils;
import com.android.settings.fingerprint.FingerprintUiHelper;
/**
* Base fragment to be shared for PIN/Pattern/Password confirmation fragments.
*/
public abstract class ConfirmDeviceCredentialBaseFragment extends OptionsMenuFragment
implements FingerprintUiHelper.Callback {
public static final String PACKAGE = "com.android.settings";
public static final String TITLE_TEXT = PACKAGE + ".ConfirmCredentials.title";
public static final String HEADER_TEXT = PACKAGE + ".ConfirmCredentials.header";
public static final String DETAILS_TEXT = PACKAGE + ".ConfirmCredentials.details";
public static final String ALLOW_FP_AUTHENTICATION =
PACKAGE + ".ConfirmCredentials.allowFpAuthentication";
public static final String DARK_THEME = PACKAGE + ".ConfirmCredentials.darkTheme";
public static final String SHOW_CANCEL_BUTTON =
PACKAGE + ".ConfirmCredentials.showCancelButton";
public static final String SHOW_WHEN_LOCKED =
PACKAGE + ".ConfirmCredentials.showWhenLocked";
private FingerprintUiHelper mFingerprintHelper;
protected boolean mIsStrongAuthRequired;
private boolean mAllowFpAuthentication;
protected boolean mReturnCredentials = false;
protected Button mCancelButton;
protected ImageView mFingerprintIcon;
protected int mEffectiveUserId;
protected int mUserId;
protected LockPatternUtils mLockPatternUtils;
protected TextView mErrorTextView;
protected final Handler mHandler = new Handler();
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mAllowFpAuthentication = getActivity().getIntent().getBooleanExtra(
ALLOW_FP_AUTHENTICATION, false);
mReturnCredentials = getActivity().getIntent().getBooleanExtra(
ChooseLockSettingsHelper.EXTRA_KEY_RETURN_CREDENTIALS, false);
// Only take this argument into account if it belongs to the current profile.
Intent intent = getActivity().getIntent();
mUserId = Utils.getUserIdFromBundle(getActivity(), intent.getExtras());
final UserManager userManager = UserManager.get(getActivity());
mEffectiveUserId = userManager.getCredentialOwnerProfile(mUserId);
mLockPatternUtils = new LockPatternUtils(getActivity());
mIsStrongAuthRequired = isFingerprintDisallowedByStrongAuth();
mAllowFpAuthentication = mAllowFpAuthentication && !isFingerprintDisabledByAdmin()
&& !mReturnCredentials && !mIsStrongAuthRequired;
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mCancelButton = (Button) view.findViewById(R.id.cancelButton);
mFingerprintIcon = (ImageView) view.findViewById(R.id.fingerprintIcon);
mFingerprintHelper = new FingerprintUiHelper(
mFingerprintIcon,
(TextView) view.findViewById(R.id.errorText), this, mEffectiveUserId);
boolean showCancelButton = getActivity().getIntent().getBooleanExtra(
SHOW_CANCEL_BUTTON, false);
mCancelButton.setVisibility(showCancelButton ? View.VISIBLE : View.GONE);
mCancelButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
getActivity().finish();
}
});
int credentialOwnerUserId = Utils.getCredentialOwnerUserId(
getActivity(),
Utils.getUserIdFromBundle(
getActivity(),
getActivity().getIntent().getExtras()));
if (Utils.isManagedProfile(UserManager.get(getActivity()), credentialOwnerUserId)) {
setWorkChallengeBackground(view, credentialOwnerUserId);
}
}
private boolean isFingerprintDisabledByAdmin() {
DevicePolicyManager dpm = (DevicePolicyManager) getActivity().getSystemService(
Context.DEVICE_POLICY_SERVICE);
final int disabledFeatures = dpm.getKeyguardDisabledFeatures(null, mEffectiveUserId);
return (disabledFeatures & DevicePolicyManager.KEYGUARD_DISABLE_FINGERPRINT) != 0;
}
// User could be locked while Effective user is unlocked even though the effective owns the
// credential. Otherwise, fingerprint can't unlock fbe/keystore through
// verifyTiedProfileChallenge. In such case, we also wanna show the user message that
// fingerprint is disabled due to device restart.
private boolean isFingerprintDisallowedByStrongAuth() {
return !(mLockPatternUtils.isFingerprintAllowedForUser(mEffectiveUserId)
&& KeyStore.getInstance().state(mUserId) == KeyStore.State.UNLOCKED);
}
@Override
public void onResume() {
super.onResume();
if (mAllowFpAuthentication) {
mFingerprintHelper.startListening();
}
if (isProfileChallenge()) {
updateErrorMessage(mLockPatternUtils.getCurrentFailedPasswordAttempts(
mEffectiveUserId));
}
}
protected void setAccessibilityTitle(CharSequence supplementalText) {
Intent intent = getActivity().getIntent();
if (intent != null) {
CharSequence titleText = intent.getCharSequenceExtra(
ConfirmDeviceCredentialBaseFragment.TITLE_TEXT);
if (titleText == null || supplementalText == null) {
return;
}
String accessibilityTitle =
new StringBuilder(titleText).append(",").append(supplementalText).toString();
getActivity().setTitle(Utils.createAccessibleSequence(titleText, accessibilityTitle));
}
}
@Override
public void onPause() {
super.onPause();
if (mAllowFpAuthentication) {
mFingerprintHelper.stopListening();
}
}
@Override
public void onAuthenticated() {
// Check whether we are still active.
if (getActivity() != null && getActivity().isResumed()) {
TrustManager trustManager =
(TrustManager) getActivity().getSystemService(Context.TRUST_SERVICE);
trustManager.setDeviceLockedForUser(mEffectiveUserId, false);
authenticationSucceeded();
authenticationSucceeded();
checkForPendingIntent();
}
}
protected abstract void authenticationSucceeded();
@Override
public void onFingerprintIconVisibilityChanged(boolean visible) {
}
public void prepareEnterAnimation() {
}
public void startEnterAnimation() {
}
protected void checkForPendingIntent() {
int taskId = getActivity().getIntent().getIntExtra(Intent.EXTRA_TASK_ID, -1);
if (taskId != -1) {
try {
IActivityManager activityManager = ActivityManagerNative.getDefault();
final ActivityOptions options = ActivityOptions.makeBasic();
options.setLaunchStackId(ActivityManager.StackId.INVALID_STACK_ID);
activityManager.startActivityFromRecents(taskId, options.toBundle());
return;
} catch (RemoteException e) {
// Do nothing.
}
}
IntentSender intentSender = getActivity().getIntent()
.getParcelableExtra(Intent.EXTRA_INTENT);
if (intentSender != null) {
try {
getActivity().startIntentSenderForResult(intentSender, -1, null, 0, 0, 0);
} catch (IntentSender.SendIntentException e) {
/* ignore */
}
}
}
private void setWorkChallengeBackground(View baseView, int userId) {
View mainContent = getActivity().findViewById(com.android.settings.R.id.main_content);
if (mainContent != null) {
// Remove the main content padding so that the background image is full screen.
mainContent.setPadding(0, 0, 0, 0);
}
DevicePolicyManager dpm = (DevicePolicyManager) getActivity().getSystemService(
Context.DEVICE_POLICY_SERVICE);
baseView.setBackground(new ColorDrawable(dpm.getOrganizationColorForUser(userId)));
ImageView imageView = (ImageView) baseView.findViewById(R.id.background_image);
if (imageView != null) {
Drawable image = getResources().getDrawable(R.drawable.work_challenge_background);
image.setColorFilter(
getResources().getColor(R.color.confirm_device_credential_transparent_black),
PorterDuff.Mode.DARKEN);
imageView.setImageDrawable(image);
Point screenSize = new Point();
getActivity().getWindowManager().getDefaultDisplay().getSize(screenSize);
imageView.setLayoutParams(new FrameLayout.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT,
screenSize.y));
}
}
protected boolean isProfileChallenge() {
return Utils.isManagedProfile(UserManager.get(getContext()), mEffectiveUserId);
}
protected void reportSuccessfullAttempt() {
if (isProfileChallenge()) {
mLockPatternUtils.reportSuccessfulPasswordAttempt(mEffectiveUserId);
// Keyguard is responsible to disable StrongAuth for primary user. Disable StrongAuth
// for work challenge only here.
mLockPatternUtils.userPresent(mEffectiveUserId);
}
}
protected void reportFailedAttempt() {
if (isProfileChallenge()) {
// + 1 for this attempt.
updateErrorMessage(
mLockPatternUtils.getCurrentFailedPasswordAttempts(mEffectiveUserId) + 1);
mLockPatternUtils.reportFailedPasswordAttempt(mEffectiveUserId);
}
}
protected void updateErrorMessage(int numAttempts) {
final int maxAttempts =
mLockPatternUtils.getMaximumFailedPasswordsForWipe(mEffectiveUserId);
if (maxAttempts > 0 && numAttempts > 0) {
int remainingAttempts = maxAttempts - numAttempts;
if (remainingAttempts == 1) {
// Last try
final String title = getActivity().getString(
R.string.lock_profile_wipe_warning_title);
final String message = getActivity().getString(getLastTryErrorMessage());
showDialog(title, message, android.R.string.ok, false /* dismiss */);
} else if (remainingAttempts <= 0) {
// Profile is wiped
final String message = getActivity().getString(R.string.lock_profile_wipe_content);
showDialog(null, message, R.string.lock_profile_wipe_dismiss, true /* dismiss */);
}
if (mErrorTextView != null) {
final String message = getActivity().getString(R.string.lock_profile_wipe_attempts,
numAttempts, maxAttempts);
showError(message, 0);
}
}
}
protected abstract int getLastTryErrorMessage();
private final Runnable mResetErrorRunnable = new Runnable() {
@Override
public void run() {
mErrorTextView.setText("");
}
};
protected void showError(CharSequence msg, long timeout) {
mErrorTextView.setText(msg);
onShowError();
mHandler.removeCallbacks(mResetErrorRunnable);
if (timeout != 0) {
mHandler.postDelayed(mResetErrorRunnable, timeout);
}
}
protected abstract void onShowError();
protected void showError(int msg, long timeout) {
showError(getText(msg), timeout);
}
private void showDialog(String title, String message, int buttonString, final boolean dismiss) {
final AlertDialog dialog = new AlertDialog.Builder(getActivity())
.setTitle(title)
.setMessage(message)
.setPositiveButton(buttonString, new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
if (dismiss) {
getActivity().finish();
}
}
})
.create();
dialog.show();
}
}