am f4348489: Merge "Adding shell commands for grant/revoke of bind app widget...

# Copyright 2014 The Android Open Source Project

LOCAL_PATH:= $(call my-dir)

include $(CLEAR_VARS)

LOCAL_SRC_FILES := $(call all-subdir-java-files)

LOCAL_MODULE := appwidget

include $(BUILD_JAVA_LIBRARY)

include $(CLEAR_VARS)

LOCAL_MODULE := appwidget

LOCAL_SRC_FILES := appwidget

LOCAL_MODULE_CLASS := EXECUTABLES

LOCAL_MODULE_TAGS := optional

include $(BUILD_PREBUILT)

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# Script to start "appwidget" on the device, which has a very rudimentary shell.

base=/system

export CLASSPATH=$base/framework/appwidget.jar

exec app_process $base/bin com.android.commands.appwidget.AppWidget "$@"

/*

** Copyright 2014, 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.commands.appwidget;

import android.content.Context;

import android.os.IBinder;

import android.os.RemoteException;

import android.os.ServiceManager;

import android.os.UserHandle;

import android.text.TextUtils;

import com.android.internal.appwidget.IAppWidgetService;

/**

 * This class is a command line utility for manipulating app widgets. A client

 * can grant or revoke the permission for a given package to bind app widgets.

 */

public class AppWidget {

    private static final String USAGE =

        "usage: adb shell appwidget [subcommand] [options]\n"

        + "\n"

        + "usage: adb shell appwidget grantbind --package <PACKAGE> "

                + " [--user <USER_ID> | current]\n"

        + "  <PACKAGE> an Android package name.\n"

        + "  <USER_ID> The user id under which the package is installed.\n"

        + "  Example:\n"

        + "  # Grant the \"foo.bar.baz\" package to bind app widgets for the current user.\n"

        + "  adb shell grantbind --package foo.bar.baz --user current\n"

        + "\n"

        + "usage: adb shell appwidget revokebind --package <PACKAGE> "

                + "[--user <USER_ID> | current]\n"

        + "  <PACKAGE> an Android package name.\n"

        + "  <USER_ID> The user id under which the package is installed.\n"

        + "  Example:\n"

        + "  # Revoke the permisison to bind app widgets from the \"foo.bar.baz\" package.\n"

        + "  adb shell revokebind --package foo.bar.baz --user current\n"

        + "\n";

    private static class Parser {

        private static final String ARGUMENT_GRANT_BIND = "grantbind";

        private static final String ARGUMENT_REVOKE_BIND = "revokebind";

        private static final String ARGUMENT_PACKAGE = "--package";

        private static final String ARGUMENT_USER = "--user";

        private static final String ARGUMENT_PREFIX = "--";

        private static final String VALUE_USER_CURRENT = "current";

        private final Tokenizer mTokenizer;

        public Parser(String[] args) {

            mTokenizer = new Tokenizer(args);

        }

        public Runnable parseCommand() {

            try {

                String operation = mTokenizer.nextArg();

                if (ARGUMENT_GRANT_BIND.equals(operation)) {

                    return parseSetGrantBindAppWidgetPermissionCommand(true);

                } else if (ARGUMENT_REVOKE_BIND.equals(operation)) {

                    return parseSetGrantBindAppWidgetPermissionCommand(false);

                } else {

                    throw new IllegalArgumentException("Unsupported operation: " + operation);

                }

            } catch (IllegalArgumentException iae) {

                System.out.println(USAGE);

                System.out.println("[ERROR] " + iae.getMessage());

                return null;

            }

        }

        private SetBindAppWidgetPermissionCommand parseSetGrantBindAppWidgetPermissionCommand(

                boolean granted) {

            String packageName = null;

            int userId = UserHandle.USER_OWNER;

            for (String argument; (argument = mTokenizer.nextArg()) != null;) {

                if (ARGUMENT_PACKAGE.equals(argument)) {

                    packageName = argumentValueRequired(argument);

                } else if (ARGUMENT_USER.equals(argument)) {

                    String user = argumentValueRequired(argument);

                    if (VALUE_USER_CURRENT.equals(user)) {

                        userId = UserHandle.USER_CURRENT;

                    } else {

                        userId = Integer.parseInt(user);

                    }

                } else {

                    throw new IllegalArgumentException("Unsupported argument: " + argument);

                }

            }

            if (packageName == null) {

                throw new IllegalArgumentException("Package name not specified."

                        + " Did you specify --package argument?");

            }

            return new SetBindAppWidgetPermissionCommand(packageName, granted, userId);

        }

        private String argumentValueRequired(String argument) {

            String value = mTokenizer.nextArg();

            if (TextUtils.isEmpty(value) || value.startsWith(ARGUMENT_PREFIX)) {

                throw new IllegalArgumentException("No value for argument: " + argument);

            }

            return value;

        }

    }

    private static class Tokenizer {

        private final String[] mArgs;

        private int mNextArg;

        public Tokenizer(String[] args) {

            mArgs = args;

        }

        private String nextArg() {

            if (mNextArg < mArgs.length) {

                return mArgs[mNextArg++];

            } else {

                return null;

            }

        }

    }

    private static class SetBindAppWidgetPermissionCommand implements Runnable {

        final String mPackageName;

        final boolean mGranted;

        final int mUserId;

        public SetBindAppWidgetPermissionCommand(String packageName, boolean granted,

                int userId) {

            mPackageName = packageName;

            mGranted = granted;

            mUserId = userId;

        }

        @Override

        public void run() {

            IBinder binder = ServiceManager.getService(Context.APPWIDGET_SERVICE);

            IAppWidgetService appWidgetService = IAppWidgetService.Stub.asInterface(binder);

            try {

                appWidgetService.setBindAppWidgetPermission(mPackageName, mGranted, mUserId);

            } catch (RemoteException re) {

                re.printStackTrace();

            }

        }

    }

    public static void main(String[] args) {

        Parser parser = new Parser(args);

        Runnable command = parser.parseCommand();

        if (command != null) {

            command.run();

        }

    }

}