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8216986: Remove unused code from SocksSocketImpl
Reviewed-by: alanb
This commit is contained in:
Michael McMahon
parent
288ebae13c
commit
0fc677a674
6 changed files with 148 additions and 591 deletions
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@ -28,14 +28,11 @@ import java.io.InputStream;
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import java.io.OutputStream;
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import java.io.BufferedOutputStream;
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import java.security.AccessController;
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import java.security.PrivilegedAction;
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import java.security.PrivilegedExceptionAction;
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import jdk.internal.util.StaticProperty;
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import sun.net.SocksProxy;
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import sun.net.spi.DefaultProxySelector;
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import sun.net.www.ParseUtil;
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/* import org.ietf.jgss.*; */
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/**
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* SOCKS (V4 & V5) TCP socket implementation (RFC 1928).
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@ -51,19 +48,11 @@ class SocksSocketImpl extends PlainSocketImpl implements SocksConsts {
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private Socket cmdsock = null;
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private InputStream cmdIn = null;
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private OutputStream cmdOut = null;
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/* true if the Proxy has been set programmatically */
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private boolean applicationSetProxy; /* false */
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SocksSocketImpl() {
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// Nothing needed
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}
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SocksSocketImpl(String server, int port) {
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this.server = server;
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this.serverPort = (port == -1 ? DEFAULT_PORT : port);
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}
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SocksSocketImpl(Proxy proxy) {
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SocketAddress a = proxy.address();
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if (a instanceof InetSocketAddress) {
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@ -75,10 +64,6 @@ class SocksSocketImpl extends PlainSocketImpl implements SocksConsts {
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useV4 = useV4(proxy);
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}
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void setV4() {
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useV4 = true;
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}
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private static boolean useV4(Proxy proxy) {
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if (proxy instanceof SocksProxy
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&& ((SocksProxy)proxy).protocolVersion() == 4) {
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@ -123,10 +108,6 @@ class SocksSocketImpl extends PlainSocketImpl implements SocksConsts {
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throw new SocketTimeoutException();
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}
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private int readSocksReply(InputStream in, byte[] data) throws IOException {
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return readSocksReply(in, data, 0L);
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}
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private int readSocksReply(InputStream in, byte[] data, long deadlineMillis) throws IOException {
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int len = data.length;
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int received = 0;
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@ -144,14 +125,6 @@ class SocksSocketImpl extends PlainSocketImpl implements SocksConsts {
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return received;
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}
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/**
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* Provides the authentication mechanism required by the proxy.
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*/
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private boolean authenticate(byte method, InputStream in,
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BufferedOutputStream out) throws IOException {
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return authenticate(method, in, out, 0L);
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}
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private boolean authenticate(byte method, InputStream in,
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BufferedOutputStream out,
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long deadlineMillis) throws IOException {
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@ -212,60 +185,6 @@ class SocksSocketImpl extends PlainSocketImpl implements SocksConsts {
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/* Authentication succeeded */
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return true;
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}
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/**
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* GSSAPI authentication mechanism.
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* Unfortunately the RFC seems out of sync with the Reference
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* implementation. I'll leave this in for future completion.
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*/
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// if (method == GSSAPI) {
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// try {
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// GSSManager manager = GSSManager.getInstance();
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// GSSName name = manager.createName("SERVICE:socks@"+server,
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// null);
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// GSSContext context = manager.createContext(name, null, null,
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// GSSContext.DEFAULT_LIFETIME);
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// context.requestMutualAuth(true);
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// context.requestReplayDet(true);
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// context.requestSequenceDet(true);
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// context.requestCredDeleg(true);
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// byte []inToken = new byte[0];
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// while (!context.isEstablished()) {
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// byte[] outToken
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// = context.initSecContext(inToken, 0, inToken.length);
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// // send the output token if generated
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// if (outToken != null) {
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// out.write(1);
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// out.write(1);
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// out.writeShort(outToken.length);
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// out.write(outToken);
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// out.flush();
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// data = new byte[2];
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// i = readSocksReply(in, data, deadlineMillis);
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// if (i != 2 || data[1] == 0xff) {
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// in.close();
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// out.close();
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// return false;
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// }
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// i = readSocksReply(in, data, deadlineMillis);
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// int len = 0;
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// len = ((int)data[0] & 0xff) << 8;
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// len += data[1];
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// data = new byte[len];
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// i = readSocksReply(in, data, deadlineMillis);
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// if (i == len)
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// return true;
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// in.close();
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// out.close();
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// }
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// }
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// } catch (GSSException e) {
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// /* RFC 1961 states that if Context initialisation fails the connection
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// MUST be closed */
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// e.printStackTrace();
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// in.close();
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// out.close();
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// }
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// }
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return false;
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}
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@ -590,450 +509,6 @@ class SocksSocketImpl extends PlainSocketImpl implements SocksConsts {
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external_address = epoint;
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}
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private void bindV4(InputStream in, OutputStream out,
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InetAddress baddr,
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int lport) throws IOException {
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if (!(baddr instanceof Inet4Address)) {
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throw new SocketException("SOCKS V4 requires IPv4 only addresses");
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}
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super.bind(baddr, lport);
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byte[] addr1 = baddr.getAddress();
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/* Test for AnyLocal */
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InetAddress naddr = baddr;
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if (naddr.isAnyLocalAddress()) {
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naddr = AccessController.doPrivileged(
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new PrivilegedAction<>() {
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public InetAddress run() {
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return cmdsock.getLocalAddress();
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}
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});
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addr1 = naddr.getAddress();
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}
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out.write(PROTO_VERS4);
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out.write(BIND);
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out.write((super.getLocalPort() >> 8) & 0xff);
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out.write((super.getLocalPort() >> 0) & 0xff);
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out.write(addr1);
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String userName = getUserName();
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try {
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out.write(userName.getBytes("ISO-8859-1"));
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} catch (java.io.UnsupportedEncodingException uee) {
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assert false;
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}
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out.write(0);
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out.flush();
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byte[] data = new byte[8];
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int n = readSocksReply(in, data);
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if (n != 8)
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throw new SocketException("Reply from SOCKS server has bad length: " + n);
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if (data[0] != 0 && data[0] != 4)
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throw new SocketException("Reply from SOCKS server has bad version");
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SocketException ex = null;
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switch (data[1]) {
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case 90:
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// Success!
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external_address = new InetSocketAddress(baddr, lport);
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break;
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case 91:
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ex = new SocketException("SOCKS request rejected");
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break;
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case 92:
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ex = new SocketException("SOCKS server couldn't reach destination");
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break;
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case 93:
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ex = new SocketException("SOCKS authentication failed");
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break;
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default:
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ex = new SocketException("Reply from SOCKS server contains bad status");
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break;
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}
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if (ex != null) {
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in.close();
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out.close();
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throw ex;
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}
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}
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/**
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* Sends the Bind request to the SOCKS proxy. In the SOCKS protocol, bind
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* means "accept incoming connection from", so the SocketAddress is
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* the one of the host we do accept connection from.
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*
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* @param saddr the Socket address of the remote host.
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* @exception IOException if an I/O error occurs when binding this socket.
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*/
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protected synchronized void socksBind(InetSocketAddress saddr) throws IOException {
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if (socket != null) {
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// this is a client socket, not a server socket, don't
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// call the SOCKS proxy for a bind!
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return;
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}
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// Connects to the SOCKS server
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if (server == null) {
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// This is the general case
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// server is not null only when the socket was created with a
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// specified proxy in which case it does bypass the ProxySelector
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ProxySelector sel = java.security.AccessController.doPrivileged(
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new java.security.PrivilegedAction<>() {
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public ProxySelector run() {
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return ProxySelector.getDefault();
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}
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});
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if (sel == null) {
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/*
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* No default proxySelector --> direct connection
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*/
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return;
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}
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URI uri;
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// Use getHostString() to avoid reverse lookups
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String host = saddr.getHostString();
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// IPv6 literal?
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if (saddr.getAddress() instanceof Inet6Address &&
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(!host.startsWith("[")) && (host.indexOf(':') >= 0)) {
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host = "[" + host + "]";
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}
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try {
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uri = new URI("serversocket://" + ParseUtil.encodePath(host) + ":"+ saddr.getPort());
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} catch (URISyntaxException e) {
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// This shouldn't happen
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assert false : e;
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uri = null;
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}
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Proxy p = null;
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Exception savedExc = null;
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java.util.Iterator<Proxy> iProxy = null;
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iProxy = sel.select(uri).iterator();
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if (iProxy == null || !(iProxy.hasNext())) {
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return;
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}
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while (iProxy.hasNext()) {
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p = iProxy.next();
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if (p == null || p.type() != Proxy.Type.SOCKS) {
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return;
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}
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if (!(p.address() instanceof InetSocketAddress))
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throw new SocketException("Unknown address type for proxy: " + p);
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// Use getHostString() to avoid reverse lookups
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server = ((InetSocketAddress) p.address()).getHostString();
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serverPort = ((InetSocketAddress) p.address()).getPort();
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useV4 = useV4(p);
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// Connects to the SOCKS server
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try {
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AccessController.doPrivileged(
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new PrivilegedExceptionAction<>() {
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public Void run() throws Exception {
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cmdsock = new Socket(new PlainSocketImpl());
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cmdsock.connect(new InetSocketAddress(server, serverPort));
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cmdIn = cmdsock.getInputStream();
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cmdOut = cmdsock.getOutputStream();
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return null;
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}
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});
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} catch (Exception e) {
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// Ooops, let's notify the ProxySelector
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sel.connectFailed(uri,p.address(),new SocketException(e.getMessage()));
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server = null;
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serverPort = -1;
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cmdsock = null;
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savedExc = e;
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// Will continue the while loop and try the next proxy
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}
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}
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/*
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* If server is still null at this point, none of the proxy
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* worked
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*/
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if (server == null || cmdsock == null) {
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throw new SocketException("Can't connect to SOCKS proxy:"
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+ savedExc.getMessage());
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}
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} else {
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try {
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AccessController.doPrivileged(
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new PrivilegedExceptionAction<>() {
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public Void run() throws Exception {
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cmdsock = new Socket(new PlainSocketImpl());
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cmdsock.connect(new InetSocketAddress(server, serverPort));
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cmdIn = cmdsock.getInputStream();
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cmdOut = cmdsock.getOutputStream();
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return null;
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}
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});
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} catch (Exception e) {
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throw new SocketException(e.getMessage());
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}
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}
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BufferedOutputStream out = new BufferedOutputStream(cmdOut, 512);
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InputStream in = cmdIn;
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if (useV4) {
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bindV4(in, out, saddr.getAddress(), saddr.getPort());
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return;
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}
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out.write(PROTO_VERS);
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out.write(2);
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out.write(NO_AUTH);
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out.write(USER_PASSW);
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out.flush();
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byte[] data = new byte[2];
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int i = readSocksReply(in, data);
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if (i != 2 || ((int)data[0]) != PROTO_VERS) {
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// Maybe it's not a V5 sever after all
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// Let's try V4 before we give up
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bindV4(in, out, saddr.getAddress(), saddr.getPort());
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return;
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}
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if (((int)data[1]) == NO_METHODS)
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throw new SocketException("SOCKS : No acceptable methods");
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if (!authenticate(data[1], in, out)) {
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throw new SocketException("SOCKS : authentication failed");
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}
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// We're OK. Let's issue the BIND command.
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out.write(PROTO_VERS);
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out.write(BIND);
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out.write(0);
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int lport = saddr.getPort();
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if (saddr.isUnresolved()) {
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out.write(DOMAIN_NAME);
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out.write(saddr.getHostName().length());
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try {
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out.write(saddr.getHostName().getBytes("ISO-8859-1"));
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} catch (java.io.UnsupportedEncodingException uee) {
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assert false;
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}
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out.write((lport >> 8) & 0xff);
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out.write((lport >> 0) & 0xff);
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} else if (saddr.getAddress() instanceof Inet4Address) {
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byte[] addr1 = saddr.getAddress().getAddress();
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out.write(IPV4);
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out.write(addr1);
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out.write((lport >> 8) & 0xff);
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out.write((lport >> 0) & 0xff);
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out.flush();
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} else if (saddr.getAddress() instanceof Inet6Address) {
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byte[] addr1 = saddr.getAddress().getAddress();
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out.write(IPV6);
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out.write(addr1);
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out.write((lport >> 8) & 0xff);
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out.write((lport >> 0) & 0xff);
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out.flush();
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} else {
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cmdsock.close();
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throw new SocketException("unsupported address type : " + saddr);
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}
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data = new byte[4];
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i = readSocksReply(in, data);
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SocketException ex = null;
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int len, nport;
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byte[] addr;
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switch (data[1]) {
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case REQUEST_OK:
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// success!
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switch(data[3]) {
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case IPV4:
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addr = new byte[4];
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i = readSocksReply(in, addr);
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if (i != 4)
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throw new SocketException("Reply from SOCKS server badly formatted");
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data = new byte[2];
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i = readSocksReply(in, data);
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if (i != 2)
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throw new SocketException("Reply from SOCKS server badly formatted");
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nport = ((int)data[0] & 0xff) << 8;
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nport += ((int)data[1] & 0xff);
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external_address =
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new InetSocketAddress(new Inet4Address("", addr) , nport);
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break;
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case DOMAIN_NAME:
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len = data[1];
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byte[] host = new byte[len];
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i = readSocksReply(in, host);
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if (i != len)
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throw new SocketException("Reply from SOCKS server badly formatted");
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data = new byte[2];
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i = readSocksReply(in, data);
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if (i != 2)
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throw new SocketException("Reply from SOCKS server badly formatted");
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nport = ((int)data[0] & 0xff) << 8;
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nport += ((int)data[1] & 0xff);
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external_address = new InetSocketAddress(new String(host), nport);
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break;
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case IPV6:
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len = data[1];
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addr = new byte[len];
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i = readSocksReply(in, addr);
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if (i != len)
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throw new SocketException("Reply from SOCKS server badly formatted");
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data = new byte[2];
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i = readSocksReply(in, data);
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if (i != 2)
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throw new SocketException("Reply from SOCKS server badly formatted");
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nport = ((int)data[0] & 0xff) << 8;
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nport += ((int)data[1] & 0xff);
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external_address =
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new InetSocketAddress(new Inet6Address("", addr), nport);
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break;
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}
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break;
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case GENERAL_FAILURE:
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ex = new SocketException("SOCKS server general failure");
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break;
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case NOT_ALLOWED:
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ex = new SocketException("SOCKS: Bind not allowed by ruleset");
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break;
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case NET_UNREACHABLE:
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ex = new SocketException("SOCKS: Network unreachable");
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break;
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case HOST_UNREACHABLE:
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ex = new SocketException("SOCKS: Host unreachable");
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break;
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case CONN_REFUSED:
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ex = new SocketException("SOCKS: Connection refused");
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break;
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case TTL_EXPIRED:
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ex = new SocketException("SOCKS: TTL expired");
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break;
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case CMD_NOT_SUPPORTED:
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ex = new SocketException("SOCKS: Command not supported");
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break;
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case ADDR_TYPE_NOT_SUP:
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ex = new SocketException("SOCKS: address type not supported");
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break;
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}
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if (ex != null) {
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in.close();
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out.close();
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cmdsock.close();
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cmdsock = null;
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throw ex;
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}
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cmdIn = in;
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cmdOut = out;
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}
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/**
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* Accepts a connection from a specific host.
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*
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* @param s the accepted connection.
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* @param saddr the socket address of the host we do accept
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* connection from
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* @exception IOException if an I/O error occurs when accepting the
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* connection.
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*/
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protected void acceptFrom(SocketImpl s, InetSocketAddress saddr) throws IOException {
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if (cmdsock == null) {
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// Not a Socks ServerSocket.
|
||||
return;
|
||||
}
|
||||
InputStream in = cmdIn;
|
||||
// Sends the "SOCKS BIND" request.
|
||||
socksBind(saddr);
|
||||
in.read();
|
||||
int i = in.read();
|
||||
in.read();
|
||||
SocketException ex = null;
|
||||
int nport;
|
||||
byte[] addr;
|
||||
InetSocketAddress real_end = null;
|
||||
switch (i) {
|
||||
case REQUEST_OK:
|
||||
// success!
|
||||
i = in.read();
|
||||
switch(i) {
|
||||
case IPV4:
|
||||
addr = new byte[4];
|
||||
readSocksReply(in, addr);
|
||||
nport = in.read() << 8;
|
||||
nport += in.read();
|
||||
real_end =
|
||||
new InetSocketAddress(new Inet4Address("", addr) , nport);
|
||||
break;
|
||||
case DOMAIN_NAME:
|
||||
int len = in.read();
|
||||
addr = new byte[len];
|
||||
readSocksReply(in, addr);
|
||||
nport = in.read() << 8;
|
||||
nport += in.read();
|
||||
real_end = new InetSocketAddress(new String(addr), nport);
|
||||
break;
|
||||
case IPV6:
|
||||
addr = new byte[16];
|
||||
readSocksReply(in, addr);
|
||||
nport = in.read() << 8;
|
||||
nport += in.read();
|
||||
real_end =
|
||||
new InetSocketAddress(new Inet6Address("", addr), nport);
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case GENERAL_FAILURE:
|
||||
ex = new SocketException("SOCKS server general failure");
|
||||
break;
|
||||
case NOT_ALLOWED:
|
||||
ex = new SocketException("SOCKS: Accept not allowed by ruleset");
|
||||
break;
|
||||
case NET_UNREACHABLE:
|
||||
ex = new SocketException("SOCKS: Network unreachable");
|
||||
break;
|
||||
case HOST_UNREACHABLE:
|
||||
ex = new SocketException("SOCKS: Host unreachable");
|
||||
break;
|
||||
case CONN_REFUSED:
|
||||
ex = new SocketException("SOCKS: Connection refused");
|
||||
break;
|
||||
case TTL_EXPIRED:
|
||||
ex = new SocketException("SOCKS: TTL expired");
|
||||
break;
|
||||
case CMD_NOT_SUPPORTED:
|
||||
ex = new SocketException("SOCKS: Command not supported");
|
||||
break;
|
||||
case ADDR_TYPE_NOT_SUP:
|
||||
ex = new SocketException("SOCKS: address type not supported");
|
||||
break;
|
||||
}
|
||||
if (ex != null) {
|
||||
cmdIn.close();
|
||||
cmdOut.close();
|
||||
cmdsock.close();
|
||||
cmdsock = null;
|
||||
throw ex;
|
||||
}
|
||||
|
||||
/**
|
||||
* This is where we have to do some fancy stuff.
|
||||
* The datastream from the socket "accepted" by the proxy will
|
||||
* come through the cmdSocket. So we have to swap the socketImpls
|
||||
*/
|
||||
if (s instanceof SocksSocketImpl) {
|
||||
((SocksSocketImpl)s).external_address = real_end;
|
||||
}
|
||||
if (s instanceof PlainSocketImpl) {
|
||||
PlainSocketImpl psi = (PlainSocketImpl) s;
|
||||
psi.setInputStream((SocketInputStream) in);
|
||||
psi.setFileDescriptor(cmdsock.getImpl().getFileDescriptor());
|
||||
psi.setAddress(cmdsock.getImpl().getInetAddress());
|
||||
psi.setPort(cmdsock.getImpl().getPort());
|
||||
psi.setLocalPort(cmdsock.getImpl().getLocalPort());
|
||||
} else {
|
||||
s.fd = cmdsock.getImpl().fd;
|
||||
s.address = cmdsock.getImpl().address;
|
||||
s.port = cmdsock.getImpl().port;
|
||||
s.localport = cmdsock.getImpl().localport;
|
||||
}
|
||||
|
||||
// Need to do that so that the socket won't be closed
|
||||
// when the ServerSocket is closed by the user.
|
||||
// It kinds of detaches the Socket because it is now
|
||||
// used elsewhere.
|
||||
cmdsock = null;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
|
|
@ -1064,16 +539,6 @@ class SocksSocketImpl extends PlainSocketImpl implements SocksConsts {
|
|||
return super.getPort();
|
||||
}
|
||||
|
||||
@Override
|
||||
protected int getLocalPort() {
|
||||
if (socket != null)
|
||||
return super.getLocalPort();
|
||||
if (external_address != null)
|
||||
return external_address.getPort();
|
||||
else
|
||||
return super.getLocalPort();
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void close() throws IOException {
|
||||
if (cmdsock != null)
|
||||
|
|
@ -1083,14 +548,6 @@ class SocksSocketImpl extends PlainSocketImpl implements SocksConsts {
|
|||
}
|
||||
|
||||
private String getUserName() {
|
||||
String userName = "";
|
||||
if (applicationSetProxy) {
|
||||
try {
|
||||
userName = System.getProperty("user.name");
|
||||
} catch (SecurityException se) { /* swallow Exception */ }
|
||||
} else {
|
||||
userName = StaticProperty.userName();
|
||||
}
|
||||
return userName;
|
||||
return StaticProperty.userName();
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue