| /* |
| * 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 android.security.cts.CVE_2021_39702; |
| |
| import static androidx.test.core.app.ApplicationProvider.getApplicationContext; |
| import static androidx.test.platform.app.InstrumentationRegistry.getInstrumentation; |
| |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assume.assumeNoException; |
| import static org.junit.Assume.assumeNotNull; |
| import static org.junit.Assume.assumeTrue; |
| |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ResolveInfo; |
| import android.net.Uri; |
| import android.provider.Settings; |
| import android.security.AppUriAuthenticationPolicy; |
| import android.security.Credentials; |
| import android.security.KeyChain; |
| |
| import androidx.test.runner.AndroidJUnit4; |
| import androidx.test.uiautomator.By; |
| import androidx.test.uiautomator.UiDevice; |
| import androidx.test.uiautomator.Until; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.io.IOException; |
| import java.util.regex.Pattern; |
| |
| @RunWith(AndroidJUnit4.class) |
| public class DeviceTest { |
| private static final int LAUNCH_TIMEOUT_MS = 20000; |
| private String vulnerableActivityName = ""; |
| |
| private void startOverlayService() { |
| Context context = getApplicationContext(); |
| assumeNotNull(context); |
| Intent intent = new Intent(context, PocService.class); |
| assumeTrue(context.getString(R.string.canNotDrawOverlaysMsg), |
| Settings.canDrawOverlays(context)); |
| try { |
| context.startService(intent); |
| } catch (Exception e) { |
| assumeNoException(context.getString(R.string.overlayServiceNotStartedException), e); |
| } |
| } |
| |
| public void startVulnerableActivity() { |
| Context context = getApplicationContext(); |
| assumeNotNull(context); |
| Intent intent = new Intent(Credentials.ACTION_MANAGE_CREDENTIALS); |
| intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); |
| AppUriAuthenticationPolicy policy = new AppUriAuthenticationPolicy.Builder() |
| .addAppAndUriMapping(context.getPackageName(), Uri.parse(""), |
| context.getString(R.string.overlayAttack)) |
| .build(); |
| intent.putExtra(KeyChain.EXTRA_AUTHENTICATION_POLICY, policy); |
| PackageManager pm = context.getPackageManager(); |
| assumeNotNull(pm); |
| ResolveInfo ri = pm.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY); |
| assumeTrue(context.getString(R.string.activityNotFoundMsg) + intent, ri != null); |
| assumeNotNull(ri.activityInfo); |
| vulnerableActivityName = ri.activityInfo.name; |
| try { |
| context.startActivity(intent); |
| } catch (Exception e) { |
| assumeNoException(context.getString(R.string.activityNotStartedException) + intent, e); |
| } |
| } |
| |
| @Test |
| public void testOverlayButtonPresence() { |
| Context context = getApplicationContext(); |
| assumeNotNull(context); |
| UiDevice device = UiDevice.getInstance(getInstrumentation()); |
| assumeNotNull(device); |
| |
| /* Start the overlay service */ |
| startOverlayService(); |
| |
| /* Wait for the overlay window */ |
| Pattern overlayTextPattern = Pattern.compile(context.getString(R.string.overlayButtonText), |
| Pattern.CASE_INSENSITIVE); |
| assumeTrue(context.getString(R.string.overlayUiScreenError), |
| device.wait(Until.hasObject(By.text(overlayTextPattern)), LAUNCH_TIMEOUT_MS)); |
| |
| /* Start the vulnerable activity */ |
| startVulnerableActivity(); |
| |
| /* Wait until the object of launcher activity is gone */ |
| boolean overlayDisallowed = device.wait(Until.gone(By.pkg(context.getPackageName())), |
| LAUNCH_TIMEOUT_MS); |
| |
| /* Check if the currently running activity is the vulnerable activity */ |
| String activityDump = ""; |
| try { |
| activityDump = device.executeShellCommand( |
| context.getString(R.string.dumpsysActivity) + " " + vulnerableActivityName); |
| } catch (IOException e) { |
| assumeNoException(context.getString(R.string.dumpsysActivityNotStartedException), e); |
| } |
| Pattern activityPattern = |
| Pattern.compile(context.getString(R.string.mResumedTrue), Pattern.CASE_INSENSITIVE); |
| assumeTrue(context.getString(R.string.vulActivityNotRunningError), |
| activityPattern.matcher(activityDump).find()); |
| |
| /* Failing the test as fix is not present */ |
| assertTrue(context.getString(R.string.errorMessage), overlayDisallowed); |
| } |
| } |