FRP bypass defense in the settings app
Over the last few years, there have been a number of
Factory Reset Protection bypass bugs in the SUW flow.
It's unlikely to defense all points from individual apps.
Therefore, we decide to block some critical pages when
user doesn't complete the SUW flow.
Test: Can't open the certain pages in the suw flow.
Bug: 258422561
Fix: 200746457
Bug: 202975040
Fix: 213091525
Fix: 213090835
Fix: 201561699
Fix: 213090827
Fix: 213090875
Change-Id: Ia18f367109df5af7da0a5acad7702898a459d32e
Merged-In: Ia18f367109df5af7da0a5acad7702898a459d32e
diff --git a/src/com/android/settings/SettingsPreferenceFragment.java b/src/com/android/settings/SettingsPreferenceFragment.java
index 1d6a48d..d3e1c49 100644
--- a/src/com/android/settings/SettingsPreferenceFragment.java
+++ b/src/com/android/settings/SettingsPreferenceFragment.java
@@ -54,6 +54,7 @@
import com.android.settingslib.widget.LayoutPreference;
import com.google.android.material.appbar.AppBarLayout;
+import com.google.android.setupcompat.util.WizardManagerHelper;
import java.util.UUID;
@@ -63,7 +64,7 @@
public abstract class SettingsPreferenceFragment extends InstrumentedPreferenceFragment
implements DialogCreatable, HelpResourceProvider, Indexable {
- private static final String TAG = "SettingsPreference";
+ private static final String TAG = "SettingsPreferenceFragment";
private static final String SAVE_HIGHLIGHTED_KEY = "android:preference_highlighted";
@@ -122,6 +123,15 @@
private boolean mPreferenceHighlighted = false;
@Override
+ public void onAttach(Context context) {
+ if (shouldSkipForInitialSUW() && !WizardManagerHelper.isDeviceProvisioned(getContext())) {
+ Log.w(TAG, "Skip " + getClass().getSimpleName() + " before SUW completed.");
+ finish();
+ }
+ super.onAttach(context);
+ }
+
+ @Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
@@ -267,6 +277,16 @@
|| (mAdapter.getPreferenceAdapterPosition(preference) != RecyclerView.NO_POSITION));
}
+ /**
+ * Whether UI should be skipped in the initial SUW flow.
+ *
+ * @return {@code true} when UI should be skipped in the initial SUW flow.
+ * {@code false} when UI should not be skipped in the initial SUW flow.
+ */
+ protected boolean shouldSkipForInitialSUW() {
+ return false;
+ }
+
protected void onDataSetChanged() {
highlightPreferenceIfNeeded();
updateEmptyView();
diff --git a/src/com/android/settings/accounts/AccountDashboardFragment.java b/src/com/android/settings/accounts/AccountDashboardFragment.java
index f57b124..a2b6182 100644
--- a/src/com/android/settings/accounts/AccountDashboardFragment.java
+++ b/src/com/android/settings/accounts/AccountDashboardFragment.java
@@ -84,6 +84,11 @@
return controllers;
}
+ @Override
+ protected boolean shouldSkipForInitialSUW() {
+ return true;
+ }
+
static void buildAutofillPreferenceControllers(
Context context, List<AbstractPreferenceController> controllers) {
controllers.add(new DefaultAutofillPreferenceController(context));
diff --git a/src/com/android/settings/applications/appinfo/AppInfoDashboardFragment.java b/src/com/android/settings/applications/appinfo/AppInfoDashboardFragment.java
index e1ea8e4..dbe03d9 100755
--- a/src/com/android/settings/applications/appinfo/AppInfoDashboardFragment.java
+++ b/src/com/android/settings/applications/appinfo/AppInfoDashboardFragment.java
@@ -503,6 +503,11 @@
return true;
}
+ @Override
+ protected boolean shouldSkipForInitialSUW() {
+ return true;
+ }
+
private void uninstallPkg(String packageName, boolean allUsers, boolean andDisable) {
stopListeningToPackageRemove();
// Create new intent to launch Uninstaller activity
diff --git a/src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java b/src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java
index fbab1fd..74013b3 100644
--- a/src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java
+++ b/src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java
@@ -215,6 +215,11 @@
}
}
+ @Override
+ protected boolean shouldSkipForInitialSUW() {
+ return true;
+ }
+
/**
* Long-pressing a developer options quick settings tile will by default (see
* QS_TILE_PREFERENCES in the manifest) take you to the developer options page.
diff --git a/src/com/android/settings/system/ResetDashboardFragment.java b/src/com/android/settings/system/ResetDashboardFragment.java
index e5fc8f1..c352b92 100644
--- a/src/com/android/settings/system/ResetDashboardFragment.java
+++ b/src/com/android/settings/system/ResetDashboardFragment.java
@@ -64,6 +64,11 @@
use(EraseEuiccDataController.class).setFragment(this);
}
+ @Override
+ protected boolean shouldSkipForInitialSUW() {
+ return true;
+ }
+
private static List<AbstractPreferenceController> buildPreferenceControllers(Context context,
Lifecycle lifecycle) {
final List<AbstractPreferenceController> controllers = new ArrayList<>();
diff --git a/tests/robotests/src/com/android/settings/SettingsPreferenceFragmentTest.java b/tests/robotests/src/com/android/settings/SettingsPreferenceFragmentTest.java
index cb53f69..6489311 100644
--- a/tests/robotests/src/com/android/settings/SettingsPreferenceFragmentTest.java
+++ b/tests/robotests/src/com/android/settings/SettingsPreferenceFragmentTest.java
@@ -23,11 +23,13 @@
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import android.content.Context;
import android.os.Bundle;
+import android.provider.Settings;
import android.view.View;
import android.widget.FrameLayout;
@@ -41,6 +43,7 @@
import com.android.settings.testutils.shadow.ShadowFragment;
import com.android.settings.widget.WorkOnlyCategory;
+import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
@@ -64,7 +67,9 @@
private PreferenceScreen mPreferenceScreen;
private Context mContext;
private TestFragment mFragment;
+ private TestFragment2 mFragment2;
private View mEmptyView;
+ private int mInitDeviceProvisionedValue;
@Before
public void setUp() {
@@ -72,13 +77,24 @@
FakeFeatureFactory.setupForTest();
mContext = RuntimeEnvironment.application;
mFragment = spy(new TestFragment());
+ mFragment2 = spy(new TestFragment2());
doReturn(mActivity).when(mFragment).getActivity();
when(mFragment.getContext()).thenReturn(mContext);
+ when(mFragment2.getContext()).thenReturn(mContext);
mEmptyView = new View(mContext);
ReflectionHelpers.setField(mFragment, "mEmptyView", mEmptyView);
doReturn(ITEM_COUNT).when(mPreferenceScreen).getPreferenceCount();
+
+ mInitDeviceProvisionedValue = Settings.Global.getInt(mContext.getContentResolver(),
+ Settings.Global.DEVICE_PROVISIONED, 0);
+ }
+
+ @After
+ public void tearDown() {
+ Settings.Global.putInt(mContext.getContentResolver(),
+ Settings.Global.DEVICE_PROVISIONED, mInitDeviceProvisionedValue);
}
@Test
@@ -210,9 +226,67 @@
assertThat(mFragment.mPinnedHeaderFrameLayout.getVisibility()).isEqualTo(View.INVISIBLE);
}
+ @Test
+ public void onAttach_shouldNotSkipForSUWAndDeviceIsProvisioned_notCallFinish() {
+ Settings.Global.putInt(mContext.getContentResolver(),
+ Settings.Global.DEVICE_PROVISIONED, 1);
+
+ mFragment.onAttach(mContext);
+
+ verify(mFragment, never()).finish();
+ }
+
+ @Test
+ public void onAttach_shouldNotSkipForSUWAndDeviceIsNotProvisioned_notCallFinish() {
+ Settings.Global.putInt(mContext.getContentResolver(),
+ Settings.Global.DEVICE_PROVISIONED, 0);
+
+ mFragment.onAttach(mContext);
+
+ verify(mFragment, never()).finish();
+ }
+
+ @Test
+ public void onAttach_shouldSkipForSUWAndDeviceIsDeviceProvisioned_notCallFinish() {
+ Settings.Global.putInt(mContext.getContentResolver(),
+ Settings.Global.DEVICE_PROVISIONED, 1);
+
+ mFragment2.onAttach(mContext);
+
+ verify(mFragment2, never()).finish();
+ }
+
+ @Test
+ public void onAttach_shouldSkipForSUWAndDeviceProvisioned_notCallFinish() {
+ Settings.Global.putInt(mContext.getContentResolver(),
+ Settings.Global.DEVICE_PROVISIONED, 0);
+
+ mFragment2.onAttach(mContext);
+
+ verify(mFragment2, times(1)).finish();
+ }
+
public static class TestFragment extends SettingsPreferenceFragment {
@Override
+ protected boolean shouldSkipForInitialSUW() {
+ return false;
+ }
+
+ @Override
+ public int getMetricsCategory() {
+ return 0;
+ }
+ }
+
+ public static class TestFragment2 extends SettingsPreferenceFragment {
+
+ @Override
+ protected boolean shouldSkipForInitialSUW() {
+ return true;
+ }
+
+ @Override
public int getMetricsCategory() {
return 0;
}
diff --git a/tests/robotests/src/com/android/settings/accounts/AccountDashboardFragmentTest.java b/tests/robotests/src/com/android/settings/accounts/AccountDashboardFragmentTest.java
index fe57090..921587e 100644
--- a/tests/robotests/src/com/android/settings/accounts/AccountDashboardFragmentTest.java
+++ b/tests/robotests/src/com/android/settings/accounts/AccountDashboardFragmentTest.java
@@ -114,4 +114,9 @@
assertThat(indexRaws).isNotEmpty();
}
+
+ @Test
+ public void shouldSkipForInitialSUW_returnTrue() {
+ assertThat(mFragment.shouldSkipForInitialSUW()).isTrue();
+ }
}
diff --git a/tests/robotests/src/com/android/settings/applications/appinfo/AppInfoDashboardFragmentTest.java b/tests/robotests/src/com/android/settings/applications/appinfo/AppInfoDashboardFragmentTest.java
index 95d7659..2cec3d1 100644
--- a/tests/robotests/src/com/android/settings/applications/appinfo/AppInfoDashboardFragmentTest.java
+++ b/tests/robotests/src/com/android/settings/applications/appinfo/AppInfoDashboardFragmentTest.java
@@ -384,6 +384,11 @@
.isTrue();
}
+ @Test
+ public void shouldSkipForInitialSUW_returnTrue() {
+ assertThat(mFragment.shouldSkipForInitialSUW()).isTrue();
+ }
+
@Implements(AppUtils.class)
public static class ShadowAppUtils {
diff --git a/tests/robotests/src/com/android/settings/development/DevelopmentSettingsDashboardFragmentTest.java b/tests/robotests/src/com/android/settings/development/DevelopmentSettingsDashboardFragmentTest.java
index 2d4082b..bd4ee56 100644
--- a/tests/robotests/src/com/android/settings/development/DevelopmentSettingsDashboardFragmentTest.java
+++ b/tests/robotests/src/com/android/settings/development/DevelopmentSettingsDashboardFragmentTest.java
@@ -278,6 +278,11 @@
verify(controller).onDisableLogPersistDialogRejected();
}
+ @Test
+ public void shouldSkipForInitialSUW_returnTrue() {
+ assertThat(mDashboard.shouldSkipForInitialSUW()).isTrue();
+ }
+
@Implements(EnableDevelopmentSettingWarningDialog.class)
public static class ShadowEnableDevelopmentSettingWarningDialog {
diff --git a/tests/robotests/src/com/android/settings/system/ResetDashboardFragmentTest.java b/tests/robotests/src/com/android/settings/system/ResetDashboardFragmentTest.java
new file mode 100644
index 0000000..c1d4788
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/system/ResetDashboardFragmentTest.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2022 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.system;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+
+@RunWith(RobolectricTestRunner.class)
+public class ResetDashboardFragmentTest {
+
+ private ResetDashboardFragment mFragment;
+
+ @Before
+ public void setup() {
+ mFragment = new ResetDashboardFragment();
+ }
+
+ @Test
+ public void shouldSkipForInitialSUW_returnTrue() {
+ assertThat(mFragment.shouldSkipForInitialSUW()).isTrue();
+ }
+}
