Restrict access to instant app data in usage stats

- Events are obfuscated based on whether the app was instant or not at
the time each event was logged.

- UsageStats are obfuscated based on whether each app is instant or
not at the moment.

Bug 38202133
Test: Manual test using UsageStatsTest and instant apps

Change-Id: I3c74309196b88d010d317cb0dd6749bf4624e876

4 files changed, 54 insertions, 1 deletions

diff --git a/tests/UsageStatsTest/Android.mk b/tests/UsageStatsTest/Android.mk
index 5f7467a301d2..6b5c9998fc06 100644
--- a/tests/UsageStatsTest/Android.mk
+++ b/tests/UsageStatsTest/Android.mk
@@ -8,6 +8,8 @@ LOCAL_SRC_FILES := $(call all-java-files-under, src)
 
 LOCAL_STATIC_JAVA_LIBRARIES := android-support-v4
 
+LOCAL_CERTIFICATE := platform
+
 LOCAL_PACKAGE_NAME := UsageStatsTest
 
 include $(BUILD_PACKAGE)
diff --git a/tests/UsageStatsTest/AndroidManifest.xml b/tests/UsageStatsTest/AndroidManifest.xml
index 589674a8c0ad..c27be7b2d5bf 100644
--- a/tests/UsageStatsTest/AndroidManifest.xml
+++ b/tests/UsageStatsTest/AndroidManifest.xml
@@ -1,7 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  Note: Add android:sharedUserId="android.uid.system" to the root element to simulate the system UID
+  caller case.
+-->
+
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.android.tests.usagestats">
+    package="com.android.tests.usagestats"
+    >
 
     <uses-permission android:name="android.permission.PACKAGE_USAGE_STATS" />
 
diff --git a/tests/UsageStatsTest/res/menu/main.xml b/tests/UsageStatsTest/res/menu/main.xml
index e781058f1e42..4ccbc81ab317 100644
--- a/tests/UsageStatsTest/res/menu/main.xml
+++ b/tests/UsageStatsTest/res/menu/main.xml
@@ -2,4 +2,6 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:id="@+id/log"
         android:title="View Log"/>
+    <item android:id="@+id/call_is_app_inactive"
+        android:title="Call isAppInactive()"/>
 </menu>
diff --git a/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageStatsActivity.java b/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageStatsActivity.java
index c08c1a3f61c8..9429d9bbf89b 100644
--- a/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageStatsActivity.java
+++ b/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageStatsActivity.java
@@ -16,12 +16,16 @@
 
 package com.android.tests.usagestats;
 
+import android.app.AlertDialog;
 import android.app.ListActivity;
 import android.app.usage.UsageStats;
 import android.app.usage.UsageStatsManager;
 import android.content.Context;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Bundle;
+import android.text.InputType;
+import android.text.TextUtils;
 import android.text.format.DateUtils;
 import android.view.LayoutInflater;
 import android.view.Menu;
@@ -30,6 +34,7 @@ import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.BaseAdapter;
+import android.widget.EditText;
 import android.widget.TextView;
 
 import java.util.ArrayList;
@@ -69,6 +74,9 @@ public class UsageStatsActivity extends ListActivity {
             case R.id.log:
                 startActivity(new Intent(this, UsageLogActivity.class));
                 return true;
+            case R.id.call_is_app_inactive:
+                callIsAppInactive();
+                return true;
 
             default:
                 return super.onOptionsItemSelected(item);
@@ -81,6 +89,41 @@ public class UsageStatsActivity extends ListActivity {
         updateAdapter();
     }
 
+    private void callIsAppInactive() {
+        final AlertDialog.Builder builder = new AlertDialog.Builder(this);
+        builder.setTitle("Enter package name");
+        final EditText input = new EditText(this);
+        input.setInputType(InputType.TYPE_CLASS_TEXT);
+        input.setHint("com.android.tests.usagestats");
+        builder.setView(input);
+
+        builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+                final String packageName = input.getText().toString().trim();
+                if (!TextUtils.isEmpty(packageName)) {
+                    showInactive(packageName);
+                }
+            }
+        });
+        builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+                dialog.cancel();
+            }
+        });
+
+        builder.show();
+    }
+
+    private void showInactive(String packageName) {
+        final AlertDialog.Builder builder = new AlertDialog.Builder(this);
+        builder.setMessage(
+                "isAppInactive(\"" + packageName + "\") = "
+                        + (mUsageStatsManager.isAppInactive(packageName) ? "true" : "false"));
+        builder.show();
+    }
+
     private void updateAdapter() {
         long now = System.currentTimeMillis();
         long beginTime = now - USAGE_STATS_PERIOD;