Jason Monk | da205a7 | 2013-08-21 15:57:30 -0400 | [diff] [blame] | 1 | /** |
| 2 | * Copyright (c) 2013, 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 | */ |
Jason Monk | 602b232 | 2013-07-03 17:04:33 -0400 | [diff] [blame] | 16 | package com.android.proxyhandler; |
| 17 | |
Jason Monk | 6f8a68f | 2013-08-23 19:21:25 -0400 | [diff] [blame] | 18 | import android.os.RemoteException; |
Jason Monk | 602b232 | 2013-07-03 17:04:33 -0400 | [diff] [blame] | 19 | import android.util.Log; |
| 20 | |
Jason Monk | 6f8a68f | 2013-08-23 19:21:25 -0400 | [diff] [blame] | 21 | import com.android.net.IProxyPortListener; |
Jason Monk | 602b232 | 2013-07-03 17:04:33 -0400 | [diff] [blame] | 22 | import com.google.android.collect.Lists; |
| 23 | |
| 24 | import java.io.IOException; |
| 25 | import java.io.InputStream; |
| 26 | import java.io.OutputStream; |
| 27 | import java.net.InetSocketAddress; |
| 28 | import java.net.Proxy; |
| 29 | import java.net.ProxySelector; |
| 30 | import java.net.ServerSocket; |
| 31 | import java.net.Socket; |
| 32 | import java.net.SocketException; |
| 33 | import java.net.URI; |
| 34 | import java.net.URISyntaxException; |
| 35 | import java.util.List; |
| 36 | import java.util.concurrent.ExecutorService; |
| 37 | import java.util.concurrent.Executors; |
| 38 | |
| 39 | /** |
| 40 | * @hide |
| 41 | */ |
| 42 | public class ProxyServer extends Thread { |
| 43 | |
| 44 | private static final String CONNECT = "CONNECT"; |
| 45 | private static final String HTTP_OK = "HTTP/1.1 200 OK\n"; |
| 46 | |
| 47 | private static final String TAG = "ProxyServer"; |
| 48 | |
| 49 | private ExecutorService threadExecutor; |
| 50 | |
| 51 | public boolean mIsRunning = false; |
| 52 | |
| 53 | private ServerSocket serverSocket; |
Jason Monk | 6f8a68f | 2013-08-23 19:21:25 -0400 | [diff] [blame] | 54 | private int mPort; |
| 55 | private IProxyPortListener mCallback; |
Jason Monk | 602b232 | 2013-07-03 17:04:33 -0400 | [diff] [blame] | 56 | |
| 57 | private class ProxyConnection implements Runnable { |
| 58 | private Socket connection; |
| 59 | |
| 60 | private ProxyConnection(Socket connection) { |
| 61 | this.connection = connection; |
| 62 | } |
| 63 | |
| 64 | @Override |
| 65 | public void run() { |
| 66 | try { |
Jason Monk | 602b232 | 2013-07-03 17:04:33 -0400 | [diff] [blame] | 67 | String requestLine = getLine(connection.getInputStream()); |
| 68 | if (requestLine == null) { |
| 69 | connection.close(); |
| 70 | return; |
| 71 | } |
| 72 | String[] splitLine = requestLine.split(" "); |
| 73 | if (splitLine.length < 3) { |
| 74 | connection.close(); |
| 75 | return; |
| 76 | } |
| 77 | String requestType = splitLine[0]; |
| 78 | String urlString = splitLine[1]; |
| 79 | |
| 80 | String host = ""; |
| 81 | int port = 80; |
| 82 | |
| 83 | if (requestType.equals(CONNECT)) { |
| 84 | String[] hostPortSplit = urlString.split(":"); |
| 85 | host = hostPortSplit[0]; |
| 86 | try { |
| 87 | port = Integer.parseInt(hostPortSplit[1]); |
| 88 | } catch (NumberFormatException nfe) { |
| 89 | port = 443; |
| 90 | } |
| 91 | urlString = "Https://" + host + ":" + port; |
| 92 | } else { |
| 93 | try { |
| 94 | URI url = new URI(urlString); |
| 95 | host = url.getHost(); |
| 96 | port = url.getPort(); |
| 97 | if (port < 0) { |
| 98 | port = 80; |
| 99 | } |
| 100 | } catch (URISyntaxException e) { |
| 101 | connection.close(); |
| 102 | return; |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | List<Proxy> list = Lists.newArrayList(); |
| 107 | try { |
| 108 | list = ProxySelector.getDefault().select(new URI(urlString)); |
| 109 | } catch (URISyntaxException e) { |
| 110 | e.printStackTrace(); |
| 111 | } |
| 112 | Socket server = null; |
| 113 | for (Proxy proxy : list) { |
| 114 | try { |
| 115 | if (!proxy.equals(Proxy.NO_PROXY)) { |
| 116 | // Only Inets created by PacProxySelector. |
| 117 | InetSocketAddress inetSocketAddress = |
Jason Monk | 179d6e8 | 2013-10-30 12:37:28 -0400 | [diff] [blame] | 118 | (InetSocketAddress)proxy.address(); |
| 119 | server = new Socket(inetSocketAddress.getHostName(), |
Jason Monk | 602b232 | 2013-07-03 17:04:33 -0400 | [diff] [blame] | 120 | inetSocketAddress.getPort()); |
| 121 | sendLine(server, requestLine); |
| 122 | } else { |
| 123 | server = new Socket(host, port); |
| 124 | if (requestType.equals(CONNECT)) { |
| 125 | while (getLine(connection.getInputStream()).length() != 0); |
| 126 | // No proxy to respond so we must. |
| 127 | sendLine(connection, HTTP_OK); |
| 128 | } else { |
| 129 | sendLine(server, requestLine); |
| 130 | } |
| 131 | } |
| 132 | } catch (IOException ioe) { |
| 133 | |
| 134 | } |
| 135 | if (server != null) { |
| 136 | break; |
| 137 | } |
| 138 | } |
| 139 | if (server == null) { |
| 140 | server = new Socket(host, port); |
| 141 | if (requestType.equals(CONNECT)) { |
| 142 | while (getLine(connection.getInputStream()).length() != 0); |
| 143 | // No proxy to respond so we must. |
| 144 | sendLine(connection, HTTP_OK); |
| 145 | } else { |
| 146 | sendLine(server, requestLine); |
| 147 | } |
| 148 | } |
| 149 | // Pass data back and forth until complete. |
| 150 | SocketConnect.connect(connection, server); |
| 151 | } catch (IOException e) { |
| 152 | Log.d(TAG, "Problem Proxying", e); |
| 153 | } |
| 154 | try { |
| 155 | connection.close(); |
| 156 | } catch (IOException ioe) { |
| 157 | |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | private String getLine(InputStream inputStream) throws IOException { |
| 162 | StringBuffer buffer = new StringBuffer(); |
| 163 | int byteBuffer = inputStream.read(); |
| 164 | if (byteBuffer < 0) return ""; |
| 165 | do { |
| 166 | if (byteBuffer != '\r') { |
| 167 | buffer.append((char)byteBuffer); |
| 168 | } |
| 169 | byteBuffer = inputStream.read(); |
| 170 | } while ((byteBuffer != '\n') && (byteBuffer >= 0)); |
| 171 | |
| 172 | return buffer.toString(); |
| 173 | } |
| 174 | |
| 175 | private void sendLine(Socket socket, String line) throws IOException { |
| 176 | OutputStream os = socket.getOutputStream(); |
| 177 | os.write(line.getBytes()); |
| 178 | os.write('\r'); |
| 179 | os.write('\n'); |
| 180 | os.flush(); |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | public ProxyServer() { |
| 185 | threadExecutor = Executors.newCachedThreadPool(); |
Jason Monk | 6f8a68f | 2013-08-23 19:21:25 -0400 | [diff] [blame] | 186 | mPort = -1; |
| 187 | mCallback = null; |
Jason Monk | 602b232 | 2013-07-03 17:04:33 -0400 | [diff] [blame] | 188 | } |
| 189 | |
| 190 | @Override |
| 191 | public void run() { |
| 192 | try { |
Jason Monk | 6f8a68f | 2013-08-23 19:21:25 -0400 | [diff] [blame] | 193 | serverSocket = new ServerSocket(0); |
Jason Monk | 602b232 | 2013-07-03 17:04:33 -0400 | [diff] [blame] | 194 | |
Jason Monk | 6f8a68f | 2013-08-23 19:21:25 -0400 | [diff] [blame] | 195 | if (serverSocket != null) { |
| 196 | setPort(serverSocket.getLocalPort()); |
Jason Monk | 602b232 | 2013-07-03 17:04:33 -0400 | [diff] [blame] | 197 | |
Jason Monk | 6f8a68f | 2013-08-23 19:21:25 -0400 | [diff] [blame] | 198 | while (mIsRunning) { |
| 199 | try { |
Jason Monk | fa4518f | 2013-08-14 16:58:25 -0400 | [diff] [blame] | 200 | Socket socket = serverSocket.accept(); |
| 201 | // Only receive local connections. |
| 202 | if (socket.getInetAddress().isLoopbackAddress()) { |
| 203 | ProxyConnection parser = new ProxyConnection(socket); |
Jason Monk | 602b232 | 2013-07-03 17:04:33 -0400 | [diff] [blame] | 204 | |
Jason Monk | fa4518f | 2013-08-14 16:58:25 -0400 | [diff] [blame] | 205 | threadExecutor.execute(parser); |
| 206 | } else { |
| 207 | socket.close(); |
| 208 | } |
Jason Monk | 6f8a68f | 2013-08-23 19:21:25 -0400 | [diff] [blame] | 209 | } catch (IOException e) { |
| 210 | e.printStackTrace(); |
| 211 | } |
Jason Monk | 602b232 | 2013-07-03 17:04:33 -0400 | [diff] [blame] | 212 | } |
| 213 | } |
| 214 | } catch (SocketException e) { |
Jason Monk | 6f8a68f | 2013-08-23 19:21:25 -0400 | [diff] [blame] | 215 | Log.e(TAG, "Failed to start proxy server", e); |
| 216 | } catch (IOException e1) { |
| 217 | Log.e(TAG, "Failed to start proxy server", e1); |
Jason Monk | 602b232 | 2013-07-03 17:04:33 -0400 | [diff] [blame] | 218 | } |
| 219 | |
| 220 | mIsRunning = false; |
| 221 | } |
| 222 | |
Jason Monk | 6f8a68f | 2013-08-23 19:21:25 -0400 | [diff] [blame] | 223 | public synchronized void setPort(int port) { |
| 224 | if (mCallback != null) { |
| 225 | try { |
| 226 | mCallback.setProxyPort(port); |
| 227 | } catch (RemoteException e) { |
| 228 | Log.w(TAG, "Proxy failed to report port to PacManager", e); |
| 229 | } |
| 230 | } |
| 231 | mPort = port; |
| 232 | } |
| 233 | |
| 234 | public synchronized void setCallback(IProxyPortListener callback) { |
| 235 | if (mPort != -1) { |
| 236 | try { |
| 237 | callback.setProxyPort(mPort); |
| 238 | } catch (RemoteException e) { |
| 239 | Log.w(TAG, "Proxy failed to report port to PacManager", e); |
| 240 | } |
| 241 | } |
| 242 | mCallback = callback; |
| 243 | } |
| 244 | |
Jason Monk | 602b232 | 2013-07-03 17:04:33 -0400 | [diff] [blame] | 245 | public synchronized void startServer() { |
| 246 | mIsRunning = true; |
| 247 | start(); |
| 248 | } |
| 249 | |
| 250 | public synchronized void stopServer() { |
| 251 | mIsRunning = false; |
| 252 | if (serverSocket != null) { |
| 253 | try { |
| 254 | serverSocket.close(); |
| 255 | serverSocket = null; |
| 256 | } catch (IOException e) { |
| 257 | e.printStackTrace(); |
| 258 | } |
| 259 | } |
| 260 | } |
Jason Monk | 6f8a68f | 2013-08-23 19:21:25 -0400 | [diff] [blame] | 261 | |
| 262 | public boolean isBound() { |
| 263 | return (mPort != -1); |
| 264 | } |
| 265 | |
| 266 | public int getPort() { |
| 267 | return mPort; |
| 268 | } |
Jason Monk | 602b232 | 2013-07-03 17:04:33 -0400 | [diff] [blame] | 269 | } |