mirror of
https://codeberg.org/Mercury-IM/Smack
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[SMACK-226] Added proxy support via patch from Atul Aggarwal.
git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@10673 b35dd754-fafc-0310-a699-88a17e54d16e
This commit is contained in:
Daniel Henninger
dhenninger
parent
708284ca46
commit
4c4cc77e42
7 changed files with 1875 additions and 4 deletions
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@ -0,0 +1,398 @@
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package org.jivesoftware.smack.proxy;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.net.InetAddress;
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import java.net.Socket;
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import java.net.UnknownHostException;
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import javax.net.SocketFactory;
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/**
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* Socket factory for socks4 proxy
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*
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* @author Atul Aggarwal
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*/
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public class Socks4ProxySocketFactory
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extends SocketFactory
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{
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private ProxyInfo proxy;
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public Socks4ProxySocketFactory(ProxyInfo proxy)
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{
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this.proxy = proxy;
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}
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public Socket createSocket(String host, int port)
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throws IOException, UnknownHostException
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{
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return socks4ProxifiedSocket(host,port);
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}
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public Socket createSocket(String host ,int port, InetAddress localHost,
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int localPort)
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throws IOException, UnknownHostException
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{
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return socks4ProxifiedSocket(host,port);
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}
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public Socket createSocket(InetAddress host, int port)
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throws IOException
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{
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return socks4ProxifiedSocket(host.getHostAddress(),port);
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}
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public Socket createSocket( InetAddress address, int port,
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InetAddress localAddress, int localPort)
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throws IOException
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{
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return socks4ProxifiedSocket(address.getHostAddress(),port);
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}
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private Socket socks4ProxifiedSocket(String host, int port)
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throws IOException
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{
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Socket socket = null;
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InputStream in = null;
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OutputStream out = null;
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String proxy_host = proxy.getProxyAddress();
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int proxy_port = proxy.getProxyPort();
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String user = proxy.getProxyUsername();
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String passwd = proxy.getProxyPassword();
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try
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{
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socket=new Socket(proxy_host, proxy_port);
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in=socket.getInputStream();
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out=socket.getOutputStream();
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socket.setTcpNoDelay(true);
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byte[] buf=new byte[1024];
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int index=0;
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/*
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1) CONNECT
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The client connects to the SOCKS server and sends a CONNECT request when
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it wants to establish a connection to an application server. The client
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includes in the request packet the IP address and the port number of the
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destination host, and userid, in the following format.
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+----+----+----+----+----+----+----+----+----+----+....+----+
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| VN | CD | DSTPORT | DSTIP | USERID |NULL|
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+----+----+----+----+----+----+----+----+----+----+....+----+
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# of bytes: 1 1 2 4 variable 1
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VN is the SOCKS protocol version number and should be 4. CD is the
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SOCKS command code and should be 1 for CONNECT request. NULL is a byte
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of all zero bits.
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*/
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index=0;
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buf[index++]=4;
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buf[index++]=1;
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buf[index++]=(byte)(port>>>8);
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buf[index++]=(byte)(port&0xff);
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try
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{
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InetAddress addr=InetAddress.getByName(host);
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byte[] byteAddress = addr.getAddress();
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for (int i = 0; i < byteAddress.length; i++)
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{
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buf[index++]=byteAddress[i];
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}
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}
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catch(UnknownHostException uhe)
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{
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throw new ProxyException(ProxyInfo.ProxyType.SOCKS4,
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uhe.toString(), uhe);
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}
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if(user!=null)
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{
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System.arraycopy(user.getBytes(), 0, buf, index, user.length());
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index+=user.length();
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}
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buf[index++]=0;
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out.write(buf, 0, index);
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/*
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The SOCKS server checks to see whether such a request should be granted
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based on any combination of source IP address, destination IP address,
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destination port number, the userid, and information it may obtain by
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consulting IDENT, cf. RFC 1413. If the request is granted, the SOCKS
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server makes a connection to the specified port of the destination host.
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A reply packet is sent to the client when this connection is established,
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or when the request is rejected or the operation fails.
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+----+----+----+----+----+----+----+----+
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| VN | CD | DSTPORT | DSTIP |
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+----+----+----+----+----+----+----+----+
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# of bytes: 1 1 2 4
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VN is the version of the reply code and should be 0. CD is the result
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code with one of the following values:
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90: request granted
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91: request rejected or failed
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92: request rejected becasue SOCKS server cannot connect to
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identd on the client
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93: request rejected because the client program and identd
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report different user-ids
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The remaining fields are ignored.
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*/
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int len=6;
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int s=0;
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while(s<len)
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{
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int i=in.read(buf, s, len-s);
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if(i<=0)
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{
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throw new ProxyException(ProxyInfo.ProxyType.SOCKS4,
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"stream is closed");
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}
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s+=i;
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}
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if(buf[0]!=0)
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{
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throw new ProxyException(ProxyInfo.ProxyType.SOCKS4,
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"server returns VN "+buf[0]);
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}
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if(buf[1]!=90)
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{
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try
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{
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socket.close();
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}
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catch(Exception eee)
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{
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}
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String message="ProxySOCKS4: server returns CD "+buf[1];
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throw new ProxyException(ProxyInfo.ProxyType.SOCKS4,message);
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}
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byte[] temp = new byte[2];
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in.read(temp, 0, 2);
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return socket;
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}
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catch(RuntimeException e)
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{
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throw e;
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}
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catch(Exception e)
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{
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try
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{
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if(socket!=null)socket.close();
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}
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catch(Exception eee)
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{
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}
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throw new ProxyException(ProxyInfo.ProxyType.SOCKS4, e.toString());
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}
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}
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}
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package org.jivesoftware.smack.proxy;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.net.InetAddress;
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import java.net.Socket;
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import java.net.UnknownHostException;
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import javax.net.SocketFactory;
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/**
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* Socket factory for socks4 proxy
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*
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* @author Atul Aggarwal
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*/
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public class Socks4ProxySocketFactory
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extends SocketFactory
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{
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private ProxyInfo proxy;
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public Socks4ProxySocketFactory(ProxyInfo proxy)
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{
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this.proxy = proxy;
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}
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public Socket createSocket(String host, int port)
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throws IOException, UnknownHostException
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{
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return socks4ProxifiedSocket(host,port);
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}
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public Socket createSocket(String host ,int port, InetAddress localHost,
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int localPort)
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throws IOException, UnknownHostException
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{
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return socks4ProxifiedSocket(host,port);
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}
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public Socket createSocket(InetAddress host, int port)
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throws IOException
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{
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return socks4ProxifiedSocket(host.getHostAddress(),port);
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}
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public Socket createSocket( InetAddress address, int port,
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InetAddress localAddress, int localPort)
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throws IOException
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{
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return socks4ProxifiedSocket(address.getHostAddress(),port);
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}
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private Socket socks4ProxifiedSocket(String host, int port)
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throws IOException
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{
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Socket socket = null;
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InputStream in = null;
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OutputStream out = null;
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String proxy_host = proxy.getProxyAddress();
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int proxy_port = proxy.getProxyPort();
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String user = proxy.getProxyUsername();
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String passwd = proxy.getProxyPassword();
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try
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{
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socket=new Socket(proxy_host, proxy_port);
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in=socket.getInputStream();
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out=socket.getOutputStream();
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socket.setTcpNoDelay(true);
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byte[] buf=new byte[1024];
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int index=0;
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/*
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1) CONNECT
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The client connects to the SOCKS server and sends a CONNECT request when
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it wants to establish a connection to an application server. The client
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includes in the request packet the IP address and the port number of the
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destination host, and userid, in the following format.
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+----+----+----+----+----+----+----+----+----+----+....+----+
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| VN | CD | DSTPORT | DSTIP | USERID |NULL|
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+----+----+----+----+----+----+----+----+----+----+....+----+
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# of bytes: 1 1 2 4 variable 1
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VN is the SOCKS protocol version number and should be 4. CD is the
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SOCKS command code and should be 1 for CONNECT request. NULL is a byte
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of all zero bits.
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*/
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index=0;
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buf[index++]=4;
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buf[index++]=1;
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buf[index++]=(byte)(port>>>8);
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buf[index++]=(byte)(port&0xff);
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try
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{
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InetAddress addr=InetAddress.getByName(host);
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byte[] byteAddress = addr.getAddress();
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for (int i = 0; i < byteAddress.length; i++)
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{
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buf[index++]=byteAddress[i];
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}
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}
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catch(UnknownHostException uhe)
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{
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throw new ProxyException(ProxyInfo.ProxyType.SOCKS4,
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uhe.toString(), uhe);
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}
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if(user!=null)
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{
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System.arraycopy(user.getBytes(), 0, buf, index, user.length());
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index+=user.length();
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}
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buf[index++]=0;
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out.write(buf, 0, index);
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/*
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The SOCKS server checks to see whether such a request should be granted
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based on any combination of source IP address, destination IP address,
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destination port number, the userid, and information it may obtain by
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consulting IDENT, cf. RFC 1413. If the request is granted, the SOCKS
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server makes a connection to the specified port of the destination host.
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A reply packet is sent to the client when this connection is established,
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or when the request is rejected or the operation fails.
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+----+----+----+----+----+----+----+----+
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| VN | CD | DSTPORT | DSTIP |
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+----+----+----+----+----+----+----+----+
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# of bytes: 1 1 2 4
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VN is the version of the reply code and should be 0. CD is the result
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code with one of the following values:
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90: request granted
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91: request rejected or failed
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92: request rejected becasue SOCKS server cannot connect to
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identd on the client
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93: request rejected because the client program and identd
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report different user-ids
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The remaining fields are ignored.
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*/
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int len=6;
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int s=0;
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while(s<len)
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{
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int i=in.read(buf, s, len-s);
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if(i<=0)
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{
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throw new ProxyException(ProxyInfo.ProxyType.SOCKS4,
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"stream is closed");
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}
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s+=i;
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}
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if(buf[0]!=0)
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{
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throw new ProxyException(ProxyInfo.ProxyType.SOCKS4,
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"server returns VN "+buf[0]);
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}
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if(buf[1]!=90)
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{
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try
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{
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socket.close();
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}
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catch(Exception eee)
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{
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}
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String message="ProxySOCKS4: server returns CD "+buf[1];
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throw new ProxyException(ProxyInfo.ProxyType.SOCKS4,message);
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}
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byte[] temp = new byte[2];
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in.read(temp, 0, 2);
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return socket;
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}
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catch(RuntimeException e)
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{
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throw e;
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}
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catch(Exception e)
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{
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try
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{
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if(socket!=null)socket.close();
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}
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catch(Exception eee)
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{
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}
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throw new ProxyException(ProxyInfo.ProxyType.SOCKS4, e.toString());
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}
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}
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}
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