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annotate src/net/sourceforge/jsocks/ProxyServer.java @ 391:bcbd579253a1

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author Carl Byington <carl@five-ten-sg.com>
date Tue, 16 Sep 2014 11:12:45 -0700
parents 205ee2873330
children
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1 package net.sourceforge.jsocks;
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2 import net.sourceforge.jsocks.server.ServerAuthenticator;
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3 import java.net.*;
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4 import java.io.*;
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5
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6 /**
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7 SOCKS4 and SOCKS5 proxy, handles both protocols simultaniously.
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8 Implements all SOCKS commands, including UDP relaying.
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9 <p>
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10 In order to use it you will need to implement ServerAuthenticator
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11 interface. There is an implementation of this interface which does
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12 no authentication ServerAuthenticatorNone, but it is very dangerous
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13 to use, as it will give access to your local network to anybody
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14 in the world. One should never use this authentication scheme unless
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15 one have pretty good reason to do so.
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16 There is a couple of other authentication schemes in socks.server package.
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17 @see socks.server.ServerAuthenticator
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18 */
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19 public class ProxyServer implements Runnable{
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20
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21 ServerAuthenticator auth;
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22 ProxyMessage msg = null;
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23
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24 Socket sock=null,remote_sock=null;
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25 ServerSocket ss=null;
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26 UDPRelayServer relayServer = null;
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27 InputStream in,remote_in;
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28 OutputStream out,remote_out;
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29
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30 int mode;
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31 static final int START_MODE = 0;
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32 static final int ACCEPT_MODE = 1;
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33 static final int PIPE_MODE = 2;
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34 static final int ABORT_MODE = 3;
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35
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36 static final int BUF_SIZE = 8192;
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37
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38 Thread pipe_thread1,pipe_thread2;
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39 long lastReadTime;
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40
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41 static int iddleTimeout = 180000; //3 minutes
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42 static int acceptTimeout = 180000; //3 minutes
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43
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44 static PrintStream log = null;
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45 static CProxy proxy;
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46
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47
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48 //Public Constructors
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49 /////////////////////
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50
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51
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52 /**
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53 Creates a proxy server with given Authentication scheme.
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54 @param auth Authentication scheme to be used.
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55 */
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56 public ProxyServer(ServerAuthenticator auth){
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57 this.auth = auth;
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58 }
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59
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60 //Other constructors
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61 ////////////////////
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62
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63 ProxyServer(ServerAuthenticator auth,Socket s){
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64 this.auth = auth;
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65 this.sock = s;
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66 mode = START_MODE;
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67 }
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68
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69 //Public methods
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70 /////////////////
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71
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72 /**
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73 Set the logging stream. Specifying null disables logging.
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74 */
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75 public static void setLog(OutputStream out){
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76 if(out == null){
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77 log = null;
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78 }else{
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79 log = new PrintStream(out,true);
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80 }
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81
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82 UDPRelayServer.log = log;
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83 }
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84
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85 /**
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86 Set proxy.
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87 <p>
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88 Allows CProxy chaining so that one CProxy server is connected to another
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89 and so on. If proxy supports SOCKSv4, then only some SOCKSv5 requests
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90 can be handled, UDP would not work, however CONNECT and BIND will be
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91 translated.
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92
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93 @param p CProxy which should be used to handle user requests.
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94 */
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95 public static void setProxy(CProxy p){
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96 proxy =p;
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97 UDPRelayServer.proxy = proxy;
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98 }
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99
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100 /**
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101 Get proxy.
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102 @return CProxy wich is used to handle user requests.
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103 */
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104 public static CProxy getProxy(){
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105 return proxy;
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106 }
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107
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108 /**
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109 Sets the timeout for connections, how long shoud server wait
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110 for data to arrive before dropping the connection.<br>
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111 Zero timeout implies infinity.<br>
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112 Default timeout is 3 minutes.
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113 */
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114 public static void setIddleTimeout(int timeout){
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115 iddleTimeout = timeout;
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116 }
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117 /**
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118 Sets the timeout for BIND command, how long the server should
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119 wait for the incoming connection.<br>
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120 Zero timeout implies infinity.<br>
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121 Default timeout is 3 minutes.
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122 */
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123 public static void setAcceptTimeout(int timeout){
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124 acceptTimeout = timeout;
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125 }
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126
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127 /**
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128 Sets the timeout for UDPRelay server.<br>
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129 Zero timeout implies infinity.<br>
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130 Default timeout is 3 minutes.
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131 */
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132 public static void setUDPTimeout(int timeout){
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133 UDPRelayServer.setTimeout(timeout);
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134 }
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135
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136 /**
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137 Sets the size of the datagrams used in the UDPRelayServer.<br>
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138 Default size is 64K, a bit more than maximum possible size of the
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139 datagram.
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140 */
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141 public static void setDatagramSize(int size){
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142 UDPRelayServer.setDatagramSize(size);
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143 }
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144
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145
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146 /**
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147 Start the CProxy server at given port.<br>
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148 This methods blocks.
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149 */
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150 public void start(int port){
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151 start(port,5,null);
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152 }
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153
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154 /**
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155 Create a server with the specified port, listen backlog, and local
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parents: 0
diff changeset
156 IP address to bind to. The localIP argument can be used on a multi-homed
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parents: 0
diff changeset
157 host for a ServerSocket that will only accept connect requests to one of
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parents: 0
diff changeset
158 its addresses. If localIP is null, it will default accepting connections
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parents: 0
diff changeset
159 on any/all local addresses. The port must be between 0 and 65535,
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parents: 0
diff changeset
160 inclusive. <br>
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parents: 0
diff changeset
161 This methods blocks.
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parents: 0
diff changeset
162 */
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parents: 0
diff changeset
163 public void start(int port,int backlog,InetAddress localIP){
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parents: 0
diff changeset
164 try{
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parents: 0
diff changeset
165 ss = new ServerSocket(port,backlog,localIP);
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parents: 0
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166 log("Starting SOCKS Proxy on:"+ss.getInetAddress().getHostAddress()+":"
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parents: 0
diff changeset
167 +ss.getLocalPort());
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parents: 0
diff changeset
168 while(true){
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parents: 0
diff changeset
169 Socket s = ss.accept();
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parents: 0
diff changeset
170 log("Accepted from:"+s.getInetAddress().getHostName()+":"
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parents: 0
diff changeset
171 +s.getPort());
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parents: 0
diff changeset
172 ProxyServer ps = new ProxyServer(auth,s);
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parents: 0
diff changeset
173 (new Thread(ps)).start();
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parents: 0
diff changeset
174 }
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parents: 0
diff changeset
175 }catch(IOException ioe){
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parents: 0
diff changeset
176 ioe.printStackTrace();
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parents: 0
diff changeset
177 }finally{
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parents: 0
diff changeset
178 }
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parents: 0
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179 }
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180
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diff changeset
181 /**
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parents: 0
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182 Stop server operation.It would be wise to interrupt thread running the
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parents: 0
diff changeset
183 server afterwards.
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parents: 0
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184 */
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parents: 0
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185 public void stop(){
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parents: 0
diff changeset
186 try{
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parents: 0
diff changeset
187 if(ss != null) ss.close();
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parents: 0
diff changeset
188 }catch(IOException ioe){
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parents: 0
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189 }
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parents: 0
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190 }
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parents: 0
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191
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192 //Runnable interface
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parents: 0
diff changeset
193 ////////////////////
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parents: 0
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194 public void run(){
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parents: 0
diff changeset
195 switch(mode){
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parents: 0
diff changeset
196 case START_MODE:
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parents: 0
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197 try{
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parents: 0
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198 startSession();
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parents: 0
diff changeset
199 }catch(IOException ioe){
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parents: 0
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200 handleException(ioe);
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parents: 0
diff changeset
201 //ioe.printStackTrace();
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parents: 0
diff changeset
202 }finally{
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parents: 0
diff changeset
203 abort();
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parents: 0
diff changeset
204 if(auth!=null) auth.endSession();
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parents: 0
diff changeset
205 log("Main thread(client->remote)stopped.");
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parents: 0
diff changeset
206 }
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parents: 0
diff changeset
207 break;
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parents: 0
diff changeset
208 case ACCEPT_MODE:
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parents: 0
diff changeset
209 try{
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parents: 0
diff changeset
210 doAccept();
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diff changeset
211 mode = PIPE_MODE;
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parents: 0
diff changeset
212 pipe_thread1.interrupt(); //Tell other thread that connection have
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parents: 0
diff changeset
213 //been accepted.
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parents: 0
diff changeset
214 pipe(remote_in,out);
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parents: 0
diff changeset
215 }catch(IOException ioe){
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parents: 0
diff changeset
216 //log("Accept exception:"+ioe);
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parents: 0
diff changeset
217 handleException(ioe);
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parents: 0
diff changeset
218 }finally{
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parents: 0
diff changeset
219 abort();
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parents: 0
diff changeset
220 log("Accept thread(remote->client) stopped");
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
221 }
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
222 break;
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parents: 0
diff changeset
223 case PIPE_MODE:
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parents: 0
diff changeset
224 try{
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parents: 0
diff changeset
225 pipe(remote_in,out);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
226 }catch(IOException ioe){
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
227 }finally{
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parents: 0
diff changeset
228 abort();
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parents: 0
diff changeset
229 log("Support thread(remote->client) stopped");
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parents: 0
diff changeset
230 }
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parents: 0
diff changeset
231 break;
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parents: 0
diff changeset
232 case ABORT_MODE:
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parents: 0
diff changeset
233 break;
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parents: 0
diff changeset
234 default:
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parents: 0
diff changeset
235 log("Unexpected MODE "+mode);
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parents: 0
diff changeset
236 }
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parents: 0
diff changeset
237 }
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parents: 0
diff changeset
238
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parents: 0
diff changeset
239 //Private methods
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parents: 0
diff changeset
240 /////////////////
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parents: 0
diff changeset
241 private void startSession() throws IOException{
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parents: 0
diff changeset
242 sock.setSoTimeout(iddleTimeout);
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parents: 0
diff changeset
243
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diff changeset
244 try{
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parents: 0
diff changeset
245 auth = auth.startSession(sock);
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parents: 0
diff changeset
246 }catch(IOException ioe){
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parents: 0
diff changeset
247 log("Auth throwed exception:"+ioe);
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parents: 0
diff changeset
248 auth = null;
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parents: 0
diff changeset
249 return;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
250 }
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parents: 0
diff changeset
251
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parents: 0
diff changeset
252 if(auth == null){ //Authentication failed
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parents: 0
diff changeset
253 log("Authentication failed");
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parents: 0
diff changeset
254 return;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
255 }
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parents: 0
diff changeset
256
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diff changeset
257 in = auth.getInputStream();
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diff changeset
258 out = auth.getOutputStream();
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parents: 0
diff changeset
259
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diff changeset
260 msg = readMsg(in);
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parents: 0
diff changeset
261 handleRequest(msg);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
262 }
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parents: 0
diff changeset
263
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parents: 0
diff changeset
264 private void handleRequest(ProxyMessage msg)
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parents: 0
diff changeset
265 throws IOException{
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parents: 0
diff changeset
266 if(!auth.checkRequest(msg)) throw new
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parents: 0
diff changeset
267 SocksException(CProxy.SOCKS_FAILURE);
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parents: 0
diff changeset
268
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parents: 0
diff changeset
269 if(msg.ip == null){
205ee2873330 update jsocks to 2011-03-19
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parents: 0
diff changeset
270 if(msg instanceof Socks5Message){
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parents: 0
diff changeset
271 msg.ip = InetAddress.getByName(msg.host);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
272 }else
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parents: 0
diff changeset
273 throw new SocksException(CProxy.SOCKS_FAILURE);
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parents: 0
diff changeset
274 }
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parents: 0
diff changeset
275 log(msg);
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parents: 0
diff changeset
276
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parents: 0
diff changeset
277 switch(msg.command){
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parents: 0
diff changeset
278 case CProxy.SOCKS_CMD_CONNECT:
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parents: 0
diff changeset
279 onConnect(msg);
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parents: 0
diff changeset
280 break;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
281 case CProxy.SOCKS_CMD_BIND:
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parents: 0
diff changeset
282 onBind(msg);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
283 break;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
284 case CProxy.SOCKS_CMD_UDP_ASSOCIATE:
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parents: 0
diff changeset
285 onUDP(msg);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
286 break;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
287 default:
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parents: 0
diff changeset
288 throw new SocksException(CProxy.SOCKS_CMD_NOT_SUPPORTED);
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parents: 0
diff changeset
289 }
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
290 }
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parents: 0
diff changeset
291
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parents: 0
diff changeset
292 private void handleException(IOException ioe){
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
293 //If we couldn't read the request, return;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
294 if(msg == null) return;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
295 //If have been aborted by other thread
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
296 if(mode == ABORT_MODE) return;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
297 //If the request was successfully completed, but exception happened later
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
298 if(mode == PIPE_MODE) return;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
299
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parents: 0
diff changeset
300 int error_code = CProxy.SOCKS_FAILURE;
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parents: 0
diff changeset
301
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
302 if(ioe instanceof SocksException)
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
303 error_code = ((SocksException)ioe).errCode;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
304 else if(ioe instanceof NoRouteToHostException)
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
305 error_code = CProxy.SOCKS_HOST_UNREACHABLE;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
306 else if(ioe instanceof ConnectException)
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
307 error_code = CProxy.SOCKS_CONNECTION_REFUSED;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
308 else if(ioe instanceof InterruptedIOException)
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
309 error_code = CProxy.SOCKS_TTL_EXPIRE;
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parents: 0
diff changeset
310
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
311 if(error_code > CProxy.SOCKS_ADDR_NOT_SUPPORTED || error_code < 0){
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parents: 0
diff changeset
312 error_code = CProxy.SOCKS_FAILURE;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
313 }
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parents: 0
diff changeset
314
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
315 sendErrorMessage(error_code);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
316 }
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
317
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
318 private void onConnect(ProxyMessage msg) throws IOException {
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
319 Socket s = null;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
320 ProxyMessage response = null;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
321 int iSock5Cmd = CProxy.SOCKS_FAILURE; //defaulting to failure
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
322 int iSock4Msg = Socks4Message.REPLY_NO_CONNECT;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
323 InetAddress sIp = null; int iPort = 0;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
324
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
325 try {
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
326 if (proxy == null) {
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
327 s = new Socket(msg.ip, msg.port);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
328 } else {
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parents: 0
diff changeset
329 s = new SocksSocket(proxy, msg.ip, msg.port);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
330 }
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
331 log("Connected to " + s.getInetAddress() + ":" + s.getPort());
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
332
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
333 iSock5Cmd = CProxy.SOCKS_SUCCESS; iSock4Msg = Socks4Message.REPLY_OK;
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parents: 0
diff changeset
334 sIp = s.getInetAddress(); iPort = s.getPort();
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
335
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
336 }
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
337 catch (Exception sE) {
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
338 log("Failed connecting to remote socket. Exception: " + sE.getLocalizedMessage());
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
339
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
340 //TBD Pick proper socks error for corresponding socket error, below is too generic
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
341 iSock5Cmd = CProxy.SOCKS_CONNECTION_REFUSED; iSock4Msg = Socks4Message.REPLY_NO_CONNECT;
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parents: 0
diff changeset
342 }
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
343
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parents: 0
diff changeset
344 if (msg instanceof Socks5Message) {
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parents: 0
diff changeset
345 response = new Socks5Message(iSock5Cmd, sIp, iPort);
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parents: 0
diff changeset
346 } else {
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parents: 0
diff changeset
347 response = new Socks4Message(iSock4Msg, sIp, iPort);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
348 }
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parents: 0
diff changeset
349
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
350 response.write(out);
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parents: 0
diff changeset
351
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
352 if (s != null) {
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
353 startPipe(s);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
354 }
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
355 else {
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
356 throw (new RuntimeException("onConnect() Failed to create Socket()"));
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
357 }
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
358
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
359 return;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
360 }
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
361
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
362
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
363 private void onBind(ProxyMessage msg) throws IOException{
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
364 ProxyMessage response = null;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
365
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
366 if(proxy == null)
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
367 ss = new ServerSocket(0);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
368 else
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parents: 0
diff changeset
369 ss = new SocksServerSocket(proxy, msg.ip, msg.port);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
370
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
371 ss.setSoTimeout(acceptTimeout);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
372
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
373 log("Trying accept on "+ss.getInetAddress()+":"+ss.getLocalPort());
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
374
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
375 if(msg.version == 5)
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
376 response = new Socks5Message(CProxy.SOCKS_SUCCESS,ss.getInetAddress(),
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
377 ss.getLocalPort());
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
378 else
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parents: 0
diff changeset
379 response = new Socks4Message(Socks4Message.REPLY_OK,
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
380 ss.getInetAddress(),
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
381 ss.getLocalPort());
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
382 response.write(out);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
383
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
384 mode = ACCEPT_MODE;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
385
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
386 pipe_thread1 = Thread.currentThread();
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
387 pipe_thread2 = new Thread(this);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
388 pipe_thread2.start();
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
389
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
390 //Make timeout infinit.
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
391 sock.setSoTimeout(0);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
392 int eof=0;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
393
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
394 try{
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
395 while((eof=in.read())>=0){
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
396 if(mode != ACCEPT_MODE){
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
397 if(mode != PIPE_MODE) return;//Accept failed
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
398
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
399 remote_out.write(eof);
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
400 break;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
401 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
402 }
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
403 }catch(EOFException eofe){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
404 //System.out.println("EOF exception");
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
405 return;//Connection closed while we were trying to accept.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
406 }catch(InterruptedIOException iioe){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
407 //Accept thread interrupted us.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
408 //System.out.println("Interrupted");
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
409 if(mode != PIPE_MODE)
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
410 return;//If accept thread was not successfull return.
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
411 }finally{
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
412 //System.out.println("Finnaly!");
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
413 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
414
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
415 if(eof < 0)//Connection closed while we were trying to accept;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
416 return;
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
417
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
418 //Do not restore timeout, instead timeout is set on the
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
419 //remote socket. It does not make any difference.
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
420
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
421 pipe(in,remote_out);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
422 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
423
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
424 private void onUDP(ProxyMessage msg) throws IOException{
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
425 if(msg.ip.getHostAddress().equals("0.0.0.0"))
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
426 msg.ip = sock.getInetAddress();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
427 log("Creating UDP relay server for "+msg.ip+":"+msg.port);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
428 relayServer = new UDPRelayServer(msg.ip,msg.port,
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Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
429 Thread.currentThread(),sock,auth);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
430
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
431 ProxyMessage response;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
432
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
433 response = new Socks5Message(CProxy.SOCKS_SUCCESS,
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
434 relayServer.relayIP,relayServer.relayPort);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
435
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
436 response.write(out);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
437
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
438 relayServer.start();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
439
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
440 //Make timeout infinit.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
441 sock.setSoTimeout(0);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
442 try{
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
443 while(in.read()>=0) /*do nothing*/;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
444 }catch(EOFException eofe){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
445 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
446 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
447
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
448 //Private methods
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
449 //////////////////
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
450
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
451 private void doAccept() throws IOException{
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
452 Socket s;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
453 long startTime = System.currentTimeMillis();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
454
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
455 while(true){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
456 s = ss.accept();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
457 if(s.getInetAddress().equals(msg.ip)){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
458 //got the connection from the right host
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
459 //Close listenning socket.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
460 ss.close();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
461 break;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
462 }else if(ss instanceof SocksServerSocket){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
463 //We can't accept more then one connection
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
464 s.close();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
465 ss.close();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
466 throw new SocksException(CProxy.SOCKS_FAILURE);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
467 }else{
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
468 if(acceptTimeout!=0){ //If timeout is not infinit
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
469 int newTimeout = acceptTimeout-(int)(System.currentTimeMillis()-
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
470 startTime);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
471 if(newTimeout <= 0) throw new InterruptedIOException(
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
472 "In doAccept()");
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
473 ss.setSoTimeout(newTimeout);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
474 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
475 s.close(); //Drop all connections from other hosts
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
476 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
477 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
478
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
479 //Accepted connection
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
480 remote_sock = s;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
481 remote_in = s.getInputStream();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
482 remote_out = s.getOutputStream();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
483
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
484 //Set timeout
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
485 remote_sock.setSoTimeout(iddleTimeout);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
486
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
487 log("Accepted from "+s.getInetAddress()+":"+s.getPort());
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
488
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
489 ProxyMessage response;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
490
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
491 if(msg.version == 5)
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
492 response = new Socks5Message(CProxy.SOCKS_SUCCESS, s.getInetAddress(),
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
493 s.getPort());
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
494 else
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
495 response = new Socks4Message(Socks4Message.REPLY_OK,
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
496 s.getInetAddress(), s.getPort());
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
497 response.write(out);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
498 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
499
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
500 private ProxyMessage readMsg(InputStream in) throws IOException{
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
501 PushbackInputStream push_in;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
502 if(in instanceof PushbackInputStream)
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
503 push_in = (PushbackInputStream) in;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
504 else
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
505 push_in = new PushbackInputStream(in);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
506
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
507 int version = push_in.read();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
508 push_in.unread(version);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
509
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
510
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
511 ProxyMessage msg;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
512
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
513 if(version == 5){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
514 msg = new Socks5Message(push_in,false);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
515 }else if(version == 4){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
516 msg = new Socks4Message(push_in,false);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
517 }else{
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
518 throw new SocksException(CProxy.SOCKS_FAILURE);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
519 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
520 return msg;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
521 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
522
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
523 private void startPipe(Socket s){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
524 mode = PIPE_MODE;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
525 remote_sock = s;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
526 try{
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
527 remote_in = s.getInputStream();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
528 remote_out = s.getOutputStream();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
529 pipe_thread1 = Thread.currentThread();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
530 pipe_thread2 = new Thread(this);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
531 pipe_thread2.start();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
532 pipe(in,remote_out);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
533 }catch(IOException ioe){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
534 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
535 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
536
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
537 private void sendErrorMessage(int error_code){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
538 ProxyMessage err_msg;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
539 if(msg instanceof Socks4Message)
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
540 err_msg = new Socks4Message(Socks4Message.REPLY_REJECTED);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
541 else
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
542 err_msg = new Socks5Message(error_code);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
543 try{
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
544 err_msg.write(out);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
545 }catch(IOException ioe){}
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
546 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
547
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
548 private synchronized void abort(){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
549 if(mode == ABORT_MODE) return;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
550 mode = ABORT_MODE;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
551 try{
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
552 log("Aborting operation");
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
553 if(remote_sock != null) remote_sock.close();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
554 if(sock != null) sock.close();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
555 if(relayServer!=null) relayServer.stop();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
556 if(ss!=null) ss.close();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
557 if(pipe_thread1 != null) pipe_thread1.interrupt();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
558 if(pipe_thread2 != null) pipe_thread2.interrupt();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
559 }catch(IOException ioe){}
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
560 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
561
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
562 static final void log(String s){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
563 if(log != null){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
564 log.println(s);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
565 log.flush();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
566 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
567 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
568
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
569 static final void log(ProxyMessage msg){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
570 log("Request version:"+msg.version+
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
571 "\tCommand: "+command2String(msg.command));
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
572 log("IP:"+msg.ip +"\tPort:"+msg.port+
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
573 (msg.version==4?"\tUser:"+msg.user:""));
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
574 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
575
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
576 private void pipe(InputStream in,OutputStream out) throws IOException{
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
577 lastReadTime = System.currentTimeMillis();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
578 byte[] buf = new byte[BUF_SIZE];
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
579 int len = 0;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
580 while(len >= 0){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
581 try{
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
582 if(len!=0){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
583 out.write(buf,0,len);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
584 out.flush();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
585 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
586 len= in.read(buf);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
587 lastReadTime = System.currentTimeMillis();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
588 }catch(InterruptedIOException iioe){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
589 if(iddleTimeout == 0) return;//Other thread interrupted us.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
590 long timeSinceRead = System.currentTimeMillis() - lastReadTime;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
591 if(timeSinceRead >= iddleTimeout - 1000) //-1s for adjustment.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
592 return;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
593 len = 0;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
594
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
595 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
596 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
597 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
598 static final String command_names[] = {"CONNECT","BIND","UDP_ASSOCIATE"};
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
599
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
600 static final String command2String(int cmd){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
601 if(cmd > 0 && cmd < 4) return command_names[cmd-1];
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
602 else return "Unknown Command "+cmd;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
603 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 0
diff changeset
604 }