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annotate src/net/sourceforge/jsocks/Socks4Proxy.java @ 429:d5f6d6886113

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author Carl Byington <carl@five-ten-sg.com>
date Sun, 14 Dec 2014 19:04:20 -0800
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1 package net.sourceforge.jsocks;
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2 import java.net.*;
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3 import java.io.*;
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4 import java.util.Hashtable;
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5 import java.util.Enumeration;
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6
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7 /**
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8 CProxy which describes SOCKS4 proxy.
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9 */
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10
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11 public class Socks4Proxy extends CProxy implements Cloneable{
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12
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13 //Data members
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14 String user;
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15
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16 //Public Constructors
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17 //====================
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18
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19 /**
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20 Creates the SOCKS4 proxy
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21 @param p CProxy to use to connect to this proxy, allows proxy chaining.
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22 @param proxyHost Address of the proxy server.
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23 @param proxyPort Port of the proxy server
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24 @param user User name to use for identification purposes.
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25 @throws UnknownHostException If proxyHost can't be resolved.
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26 */
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27 public Socks4Proxy(CProxy p,String proxyHost,int proxyPort,String user)
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28 throws UnknownHostException{
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29 super(p,proxyHost,proxyPort);
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30 this.user = new String(user);
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31 version = 4;
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32 }
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33
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34 /**
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35 Creates the SOCKS4 proxy
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36 @param proxyHost Address of the proxy server.
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37 @param proxyPort Port of the proxy server
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38 @param user User name to use for identification purposes.
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39 @throws UnknownHostException If proxyHost can't be resolved.
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40 */
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41 public Socks4Proxy(String proxyHost,int proxyPort,String user)
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42 throws UnknownHostException{
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43 this(null,proxyHost,proxyPort,user);
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44 }
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45
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46 /**
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47 Creates the SOCKS4 proxy
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48 @param p CProxy to use to connect to this proxy, allows proxy chaining.
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49 @param proxyIP Address of the proxy server.
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50 @param proxyPort Port of the proxy server
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51 @param user User name to use for identification purposes.
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52 */
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53 public Socks4Proxy(CProxy p,InetAddress proxyIP,int proxyPort,String user){
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54 super(p,proxyIP,proxyPort);
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55 this.user = new String(user);
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56 version = 4;
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57 }
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58
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59 /**
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60 Creates the SOCKS4 proxy
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61 @param proxyIP Address of the proxy server.
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62 @param proxyPort Port of the proxy server
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63 @param user User name to use for identification purposes.
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64 */
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65 public Socks4Proxy(InetAddress proxyIP,int proxyPort,String user){
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66 this(null,proxyIP,proxyPort,user);
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67 }
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68
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69 //Public instance methods
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70 //========================
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71
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72 /**
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73 * Creates a clone of this proxy. Changes made to the clone should not
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74 * affect this object.
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75 */
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76 public Object clone(){
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77 Socks4Proxy newProxy = new Socks4Proxy(proxyIP,proxyPort,user);
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78 newProxy.directHosts = (InetRange)directHosts.clone();
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79 newProxy.chainProxy = chainProxy;
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80 return newProxy;
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81 }
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82
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83
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84 //Public Static(Class) Methods
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85 //==============================
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86
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87
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88 //Protected Methods
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89 //=================
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90
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91 protected CProxy copy(){
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92 Socks4Proxy copy = new Socks4Proxy(proxyIP,proxyPort,user);
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93 copy.directHosts = this.directHosts;
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94 copy.chainProxy = chainProxy;
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95 return copy;
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96 }
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97
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98 protected ProxyMessage formMessage(int cmd,InetAddress ip,int port){
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99 switch(cmd){
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100 case SOCKS_CMD_CONNECT:
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101 cmd = Socks4Message.REQUEST_CONNECT;
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102 break;
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103 case SOCKS_CMD_BIND:
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104 cmd = Socks4Message.REQUEST_BIND;
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105 break;
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106 default:
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107 return null;
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108 }
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109 return new Socks4Message(cmd,ip,port,user);
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110 }
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111 protected ProxyMessage formMessage(int cmd,String host,int port)
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112 throws UnknownHostException{
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113 return formMessage(cmd,InetAddress.getByName(host),port);
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114 }
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115 protected ProxyMessage formMessage(InputStream in)
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116 throws SocksException,
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117 IOException{
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118 return new Socks4Message(in,true);
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119 }
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120
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121 }