AdbUtils.java revision 5af84db492a0c198377ba4dacc83c5a211e96ff6 
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
17package com.android.dumprendertree2.forwarder;
18
19import android.util.Log;
20
21import java.io.IOException;
22import java.io.InputStream;
23import java.io.OutputStream;
24import java.net.Socket;
25
26/**
27 * The utility class that can setup a socket allowing the device to communicate with remote
28 * machines through the machine that the device is connected to via adb.
29 */
30public class AdbUtils {
31    private static final String LOG_TAG = "AdbUtils";
32
33    private static final String ADB_OK = "OKAY";
34    private static final int ADB_PORT = 5037;
35    private static final String ADB_HOST = "127.0.0.1";
36    private static final int ADB_RESPONSE_SIZE = 4;
37
38    /**
39     * Creates a new socket that can be configured to serve as a transparent proxy to a
40     * remote machine. This can be achieved by calling configureSocket()
41     *
42     * @return a socket that can be configured to link to remote machine
43     */
44    public static Socket createSocket() {
45        Socket socket = null;
46        try {
47            socket = new Socket(ADB_HOST, ADB_PORT);
48        } catch (IOException e) {
49            Log.e(LOG_TAG, "Creation failed.", e);
50        }
51        return socket;
52    }
53
54    /**
55     * Configures the connection to serve as a transparent proxy to a remote machine.
56     * The given streams must belong to a socket created by createSocket().
57     *
58     * @param inputStream inputStream of the socket we want to configure
59     * @param outputStream outputStream of the socket we want to configure
60     * @param remoteAddress address of the remote machine (as you would type in a browser
61     *      in a machine that the device is connected to via adb)
62     * @param remotePort port on which to connect
63     * @return if the configuration suceeded
64     * @throws IOException
65     */
66    public static boolean configureConnection(InputStream inputStream, OutputStream outputStream,
67            String remoteAddress, int remotePort) throws IOException {
68        String cmd = "tcp:" + remotePort + ":" + remoteAddress;
69        cmd = String.format("%04X", cmd.length()) + cmd;
70
71        byte[] buf = new byte[ADB_RESPONSE_SIZE];
72        outputStream.write(cmd.getBytes());
73        int read = inputStream.read(buf);
74        if (read != ADB_RESPONSE_SIZE || !ADB_OK.equals(new String(buf))) {
75            Log.w(LOG_TAG, "adb cmd faild.");
76            return false;
77        }
78        return true;
79    }
80}