WifiAwareShellCommand.java revision dc929704e04d634eff04dfd55024b18578be9717 
1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.server.wifi.aware;
18
19import android.app.AppGlobals;
20import android.content.pm.IPackageManager;
21import android.os.Binder;
22import android.os.ShellCommand;
23
24import java.io.PrintWriter;
25
26/**
27 * Interprets and executes 'adb shell cmd wifiaware [args]'.
28 */
29public class WifiAwareShellCommand extends ShellCommand {
30    private final WifiAwareStateManager mStateManager;
31    private final IPackageManager mPM;
32
33    WifiAwareShellCommand(WifiAwareStateManager stateManager) {
34        mStateManager = stateManager;
35        mPM = AppGlobals.getPackageManager();
36    }
37
38    @Override
39    public int onCommand(String cmd) {
40        checkRootPermission();
41
42        final PrintWriter pw = getOutPrintWriter();
43        try {
44            switch (cmd != null ? cmd : "") {
45                default:
46                    return handleDefaultCommands(cmd);
47            }
48        } catch (Exception e) {
49            pw.println("Exception: " + e);
50        }
51        return -1;
52    }
53
54    private void checkRootPermission() {
55        final int uid = Binder.getCallingUid();
56        if (uid == 0) {
57            // Root can do anything.
58            return;
59        }
60        throw new SecurityException("Uid " + uid + " does not have access to wifiaware commands");
61    }
62
63    @Override
64    public void onHelp() {
65        final PrintWriter pw = getOutPrintWriter();
66
67        pw.println("Wi-Fi Aware (wifiaware) commands:");
68        pw.println("  help");
69        pw.println("    Print this help text.");
70        pw.println();
71    }
72}
73