| /* |
| * Copyright (C) 2017 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.server.wifi; |
| |
| import android.app.AppGlobals; |
| import android.content.pm.IPackageManager; |
| import android.os.Binder; |
| import android.os.ShellCommand; |
| |
| import java.io.PrintWriter; |
| |
| /** |
| * Interprets and executes 'adb shell cmd wifi [args]'. |
| * |
| * To add new commands: |
| * - onCommand: Add a case "<command>" execute. Return a 0 |
| * if command executed successfully. |
| * - onHelp: add a description string. |
| * |
| * If additional state objects are necessary add them to the |
| * constructor. |
| * |
| * Permissions: currently root permission is required for all |
| * commands. If the requirement needs to be relaxed then modify |
| * the onCommand method to check for specific permissions on |
| * individual commands. |
| */ |
| public class WifiShellCommand extends ShellCommand { |
| private final WifiStateMachine mStateMachine; |
| private final IPackageManager mPM; |
| |
| WifiShellCommand(WifiStateMachine stateMachine) { |
| mStateMachine = stateMachine; |
| mPM = AppGlobals.getPackageManager(); |
| } |
| |
| @Override |
| public int onCommand(String cmd) { |
| checkRootPermission(); |
| |
| final PrintWriter pw = getOutPrintWriter(); |
| try { |
| switch (cmd != null ? cmd : "") { |
| case "set-ipreach-disconnect": { |
| boolean enabled; |
| String nextArg = getNextArgRequired(); |
| if ("enabled".equals(nextArg)) { |
| enabled = true; |
| } else if ("disabled".equals(nextArg)) { |
| enabled = false; |
| } else { |
| pw.println( |
| "Invalid argument to 'set-ipreach-disconnect' - must be 'enabled'" |
| + " or 'disabled'"); |
| return -1; |
| } |
| mStateMachine.setIpReachabilityDisconnectEnabled(enabled); |
| return 0; |
| } |
| case "get-ipreach-disconnect": |
| pw.println("IPREACH_DISCONNECT state is " |
| + mStateMachine.getIpReachabilityDisconnectEnabled()); |
| return 0; |
| case "set-poll-rssi-interval-msecs": |
| int newPollIntervalMsecs; |
| try { |
| newPollIntervalMsecs = Integer.parseInt(getNextArgRequired()); |
| } catch (NumberFormatException e) { |
| pw.println( |
| "Invalid argument to 'set-poll-rssi-interval-msecs' " |
| + "- must be a positive integer"); |
| return -1; |
| } |
| |
| if (newPollIntervalMsecs < 1) { |
| pw.println( |
| "Invalid argument to 'set-poll-rssi-interval-msecs' " |
| + "- must be a positive integer"); |
| return -1; |
| } |
| |
| mStateMachine.setPollRssiIntervalMsecs(newPollIntervalMsecs); |
| return 0; |
| case "get-poll-rssi-interval-msecs": |
| pw.println("WifiStateMachine.mPollRssiIntervalMsecs = " |
| + mStateMachine.getPollRssiIntervalMsecs()); |
| return 0; |
| default: |
| return handleDefaultCommands(cmd); |
| } |
| } catch (Exception e) { |
| pw.println("Exception: " + e); |
| } |
| return -1; |
| } |
| |
| private void checkRootPermission() { |
| final int uid = Binder.getCallingUid(); |
| if (uid == 0) { |
| // Root can do anything. |
| return; |
| } |
| throw new SecurityException("Uid " + uid + " does not have access to wifi commands"); |
| } |
| |
| @Override |
| public void onHelp() { |
| final PrintWriter pw = getOutPrintWriter(); |
| |
| pw.println("Wi-Fi (wifi) commands:"); |
| pw.println(" help"); |
| pw.println(" Print this help text."); |
| pw.println(" set-ipreach-disconnect enabled|disabled"); |
| pw.println(" Sets whether CMD_IP_REACHABILITY_LOST events should trigger disconnects."); |
| pw.println(" get-ipreach-disconnect"); |
| pw.println(" Gets setting of CMD_IP_REACHABILITY_LOST events triggering disconnects."); |
| pw.println(" set-poll-rssi-interval-msecs <int>"); |
| pw.println(" Sets the interval between RSSI polls to <int> milliseconds."); |
| pw.println(" get-poll-rssi-interval-msecs"); |
| pw.println(" Gets current interval between RSSI polls, in milliseconds."); |
| pw.println(); |
| } |
| } |