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package com.android.proxyhandler;
import android.net.ProxyProperties;
import android.util.Log;
import com.google.android.collect.Lists;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.ProxySelector;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
/**
* @hide
*/
public class ProxyServer extends Thread {
private static final String CONNECT = "CONNECT";
private static final String HTTP_OK = "HTTP/1.1 200 OK\n";
private static final String TAG = "ProxyServer";
private ExecutorService threadExecutor;
public boolean mIsRunning = false;
private ServerSocket serverSocket;
private ProxyProperties mProxy;
private class ProxyConnection implements Runnable {
private Socket connection;
private ProxyConnection(Socket connection) {
this.connection = connection;
}
@Override
public void run() {
try {
android.net.Proxy.setHttpProxySystemProperty(mProxy);
String requestLine = getLine(connection.getInputStream());
if (requestLine == null) {
connection.close();
return;
}
String[] splitLine = requestLine.split(" ");
if (splitLine.length < 3) {
connection.close();
return;
}
String requestType = splitLine[0];
String urlString = splitLine[1];
String host = "";
int port = 80;
if (requestType.equals(CONNECT)) {
String[] hostPortSplit = urlString.split(":");
host = hostPortSplit[0];
try {
port = Integer.parseInt(hostPortSplit[1]);
} catch (NumberFormatException nfe) {
port = 443;
}
urlString = "Https://" + host + ":" + port;
} else {
try {
URI url = new URI(urlString);
host = url.getHost();
port = url.getPort();
if (port < 0) {
port = 80;
}
} catch (URISyntaxException e) {
connection.close();
return;
}
}
List<Proxy> list = Lists.newArrayList();
try {
list = ProxySelector.getDefault().select(new URI(urlString));
} catch (URISyntaxException e) {
e.printStackTrace();
}
Socket server = null;
for (Proxy proxy : list) {
try {
if (!proxy.equals(Proxy.NO_PROXY)) {
// Only Inets created by PacProxySelector.
InetSocketAddress inetSocketAddress =
(InetSocketAddress)list.get(0).address();
server = new Socket(inetSocketAddress.getAddress(),
inetSocketAddress.getPort());
sendLine(server, requestLine);
} else {
server = new Socket(host, port);
if (requestType.equals(CONNECT)) {
while (getLine(connection.getInputStream()).length() != 0);
// No proxy to respond so we must.
sendLine(connection, HTTP_OK);
} else {
sendLine(server, requestLine);
}
}
} catch (IOException ioe) {
}
if (server != null) {
break;
}
}
if (server == null) {
server = new Socket(host, port);
if (requestType.equals(CONNECT)) {
while (getLine(connection.getInputStream()).length() != 0);
// No proxy to respond so we must.
sendLine(connection, HTTP_OK);
} else {
sendLine(server, requestLine);
}
}
// Pass data back and forth until complete.
SocketConnect.connect(connection, server);
} catch (IOException e) {
Log.d(TAG, "Problem Proxying", e);
}
try {
connection.close();
} catch (IOException ioe) {
}
}
private String getLine(InputStream inputStream) throws IOException {
StringBuffer buffer = new StringBuffer();
int byteBuffer = inputStream.read();
if (byteBuffer < 0) return "";
do {
if (byteBuffer != '\r') {
buffer.append((char)byteBuffer);
}
byteBuffer = inputStream.read();
} while ((byteBuffer != '\n') && (byteBuffer >= 0));
return buffer.toString();
}
private void sendLine(Socket socket, String line) throws IOException {
OutputStream os = socket.getOutputStream();
os.write(line.getBytes());
os.write('\r');
os.write('\n');
os.flush();
}
}
public ProxyServer() {
threadExecutor = Executors.newCachedThreadPool();
}
@Override
public void run() {
try {
serverSocket = new ServerSocket(ProxyService.PORT);
serverSocket.setReuseAddress(true);
while (mIsRunning) {
try {
ProxyConnection parser = new ProxyConnection(serverSocket.accept());
threadExecutor.execute(parser);
} catch (IOException e) {
e.printStackTrace();
}
}
} catch (SocketException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
mIsRunning = false;
}
public synchronized void startServer() {
mIsRunning = true;
start();
}
public synchronized void stopServer() {
mIsRunning = false;
if (serverSocket != null) {
try {
serverSocket.close();
serverSocket = null;
} catch (IOException e) {
e.printStackTrace();
}
}
}
public void setProxy(ProxyProperties proxy) {
mProxy = proxy;
}
}
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