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/*
* Copyright (C) 2019 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.car.developeroptions.password;
import static com.android.car.developeroptions.Utils.SETTINGS_PACKAGE_NAME;
import android.annotation.Nullable;
import android.app.ActivityManager;
import android.app.IActivityManager;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.IBinder;
import android.os.RemoteException;
import android.os.UserHandle;
import android.util.Log;
import com.android.car.developeroptions.Utils;
public final class PasswordUtils extends com.android.settingslib.Utils {
private static final String TAG = "Settings";
/**
* Returns whether the uid which the activity with {@code activityToken} is launched from has
* been granted the {@code permission}.
*/
public static boolean isCallingAppPermitted(Context context, IBinder activityToken,
String permission) {
try {
return context.checkPermission(permission, /* pid= */ -1,
ActivityManager.getService().getLaunchedFromUid(activityToken))
== PackageManager.PERMISSION_GRANTED;
} catch (RemoteException e) {
Log.v(TAG, "Could not talk to activity manager.", e);
return false;
}
}
/**
* Returns the label of the package which the activity with {@code activityToken} is launched
* from or {@code null} if it is launched from the settings app itself.
*/
@Nullable
public static CharSequence getCallingAppLabel(Context context, IBinder activityToken) {
String pkg = getCallingAppPackageName(activityToken);
if (pkg == null || pkg.equals(SETTINGS_PACKAGE_NAME)) {
return null;
}
return Utils.getApplicationLabel(context, pkg);
}
/**
* Returns the package name which the activity with {@code activityToken} is launched from.
*/
@Nullable
public static String getCallingAppPackageName(IBinder activityToken) {
String pkg = null;
try {
pkg = ActivityManager.getService().getLaunchedFromPackage(activityToken);
} catch (RemoteException e) {
Log.v(TAG, "Could not talk to activity manager.", e);
}
return pkg;
}
/** Crashes the calling application and provides it with {@code message}. */
public static void crashCallingApplication(IBinder activityToken, String message) {
IActivityManager am = ActivityManager.getService();
try {
int uid = am.getLaunchedFromUid(activityToken);
int userId = UserHandle.getUserId(uid);
am.crashApplication(
uid,
/* initialPid= */ -1,
getCallingAppPackageName(activityToken),
userId,
message,
/* force */ false);
} catch (RemoteException e) {
Log.v(TAG, "Could not talk to activity manager.", e);
}
}
}
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