119 lines
3.1 KiB
Java
119 lines
3.1 KiB
Java
package com.runjva.sourceforge.jsocks.protocol;
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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.UnknownHostException;
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/**
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* Abstract class which describes SOCKS4/5 response/request.
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*/
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public abstract class ProxyMessage {
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/** Host as an IP address */
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public InetAddress ip = null;
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/** SOCKS version, or version of the response for SOCKS4 */
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public int version;
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/** Port field of the request/response */
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public int port;
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/** Request/response code as an int */
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public int command;
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/** Host as string. */
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public String host = null;
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/** User field for SOCKS4 request messages */
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public String user = null;
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ProxyMessage(int command, InetAddress ip, int port) {
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this.command = command;
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this.ip = ip;
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this.port = port;
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}
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ProxyMessage() {
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}
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/**
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* Initialises Message from the stream. Reads server response from given
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* stream.
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*
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* @param in
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* Input stream to read response from.
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* @throws SocksException
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* If server response code is not SOCKS_SUCCESS(0), or if any
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* error with protocol occurs.
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* @throws IOException
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* If any error happens with I/O.
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*/
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public abstract void read(InputStream in) throws SocksException,
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IOException;
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/**
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* Initialises Message from the stream. Reads server response or client
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* request from given stream.
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*
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* @param in
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* Input stream to read response from.
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* @param clinetMode
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* If true read server response, else read client request.
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* @throws SocksException
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* If server response code is not SOCKS_SUCCESS(0) and reading
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* in client mode, or if any error with protocol occurs.
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* @throws IOException
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* If any error happens with I/O.
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*/
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public abstract void read(InputStream in, boolean client_mode)
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throws SocksException, IOException;
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/**
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* Writes the message to the stream.
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*
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* @param out
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* Output stream to which message should be written.
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*/
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public abstract void write(OutputStream out) throws SocksException,
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IOException;
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/**
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* Get the Address field of this message as InetAddress object.
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*
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* @return Host address or null, if one can't be determined.
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*/
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public InetAddress getInetAddress() throws UnknownHostException {
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return ip;
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}
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/**
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* Get string representaion of this message.
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*
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* @return string representation of this message.
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*/
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public String toString() {
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return "Proxy Message:\n" + "Version:" + version + "\n" + "Command:"
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+ command + "\n" + "IP: " + ip + "\n" + "Port: " + port
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+ "\n" + "User: " + user + "\n";
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}
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// Package methods
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// ////////////////
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static final String bytes2IPV4(byte[] addr, int offset) {
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String hostName = "" + (addr[offset] & 0xFF);
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for (int i = offset + 1; i < offset + 4; i++) {
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hostName += "." + (addr[i] & 0xFF);
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}
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return hostName;
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}
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static final String bytes2IPV6(byte[] addr, int offset) {
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// Have no idea how they look like!
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return null;
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}
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}
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