1 /*
2  * Copyright (C) 2010 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 
17 package com.android.mtp;
18 
19 import android.app.ActivityManager;
20 import android.content.BroadcastReceiver;
21 import android.content.Context;
22 import android.content.Intent;
23 import android.content.IntentFilter;
24 import android.hardware.usb.UsbManager;
25 import android.os.Bundle;
26 import android.os.UserHandle;
27 import android.util.Log;
28 
29 public class MtpReceiver extends BroadcastReceiver {
30     private static final String TAG = MtpReceiver.class.getSimpleName();
31     private static final boolean DEBUG = false;
32 
33     @Override
onReceive(Context context, Intent intent)34     public void onReceive(Context context, Intent intent) {
35         final String action = intent.getAction();
36         if (Intent.ACTION_BOOT_COMPLETED.equals(action)) {
37             final Intent usbState = context.registerReceiver(
38                     null, new IntentFilter(UsbManager.ACTION_USB_STATE));
39             if (usbState != null) {
40                 handleUsbState(context, usbState);
41             }
42         } else if (UsbManager.ACTION_USB_STATE.equals(action)) {
43             handleUsbState(context, intent);
44         }
45     }
46 
handleUsbState(Context context, Intent intent)47     private void handleUsbState(Context context, Intent intent) {
48         Bundle extras = intent.getExtras();
49         boolean configured = extras.getBoolean(UsbManager.USB_CONFIGURED);
50         boolean connected = extras.getBoolean(UsbManager.USB_CONNECTED);
51         boolean mtpEnabled = extras.getBoolean(UsbManager.USB_FUNCTION_MTP);
52         boolean ptpEnabled = extras.getBoolean(UsbManager.USB_FUNCTION_PTP);
53         boolean unlocked = extras.getBoolean(UsbManager.USB_DATA_UNLOCKED);
54         boolean isCurrentUser = UserHandle.myUserId() == ActivityManager.getCurrentUser();
55 
56         if (configured && (mtpEnabled || ptpEnabled)) {
57             if (!isCurrentUser)
58                 return;
59             intent = new Intent(context, MtpService.class);
60             intent.putExtra(UsbManager.USB_DATA_UNLOCKED, unlocked);
61             if (ptpEnabled) {
62                 intent.putExtra(UsbManager.USB_FUNCTION_PTP, true);
63             }
64             if (DEBUG) { Log.d(TAG, "handleUsbState startService"); }
65             context.startService(intent);
66         } else if (!connected || !(mtpEnabled || ptpEnabled)) {
67             // Only unbind if disconnected or disabled.
68             boolean status = context.stopService(new Intent(context, MtpService.class));
69             if (DEBUG) { Log.d(TAG, "handleUsbState stopService status=" + status); }
70         }
71     }
72 }
73