annotate src/net/sourceforge/jsocks/Proxy.java @ 113:cb3b9b660b3d

depress() keys from the terminal monitor go straight thru buffer.keyPressed() rather than detour though the key listener
author Carl Byington <carl@five-ten-sg.com>
date Wed, 18 Jun 2014 14:24:00 -0700
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1 package net.sourceforge.jsocks;
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2 import java.io.IOException;
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3 import java.io.InputStream;
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4 import java.io.InterruptedIOException;
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5 import java.io.OutputStream;
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6 import java.net.InetAddress;
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7 import java.net.Socket;
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8 import java.net.UnknownHostException;
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9
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10 /**
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11 Abstract class Proxy, base for classes Socks4Proxy and Socks5Proxy.
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12 Defines methods for specifying default proxy, to be
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13 used by all classes of this package.
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14 */
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15
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16 public abstract class Proxy {
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17
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18 //Data members
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19 //protected InetRange directHosts = new InetRange();
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20
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21 protected InetAddress proxyIP = null;
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22 protected String proxyHost = null;
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23 protected int proxyPort;
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24 protected Socket proxySocket = null;
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25
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26 protected InputStream in;
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27 protected OutputStream out;
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28
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29 protected int version;
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30
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31 protected Proxy chainProxy = null;
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32
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33
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34 //Protected static/class variables
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35 protected static Proxy defaultProxy = null;
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36
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37 //Constructors
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38 //====================
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39 Proxy(String proxyHost, int proxyPort) throws UnknownHostException {
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40 this.proxyHost = proxyHost;
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41 this.proxyIP = InetAddress.getByName(proxyHost);
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42 this.proxyPort = proxyPort;
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43 }
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44
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45 Proxy(Proxy chainProxy, InetAddress proxyIP, int proxyPort) {
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46 this.chainProxy = chainProxy;
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47 this.proxyIP = proxyIP;
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48 this.proxyPort = proxyPort;
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49 }
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50
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51 Proxy(InetAddress proxyIP, int proxyPort) {
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52 this.proxyIP = proxyIP;
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53 this.proxyPort = proxyPort;
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54 }
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55
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56 Proxy(Proxy p) {
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57 this.proxyIP = p.proxyIP;
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58 this.proxyPort = p.proxyPort;
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59 this.version = p.version;
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60 }
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61
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62 //Public instance methods
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63 //========================
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64
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65 /**
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66 Get the port on which proxy server is running.
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67 * @return Proxy port.
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68 */
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69 public int getPort() {
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70 return proxyPort;
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71 }
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72 /**
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73 Get the ip address of the proxy server host.
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74 * @return Proxy InetAddress.
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75 */
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76 public InetAddress getInetAddress() {
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77 return proxyIP;
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78 }
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79
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80 /**
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81 Get string representation of this proxy.
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82 * @returns string in the form:proxyHost:proxyPort \t Version versionNumber
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83 */
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84 public String toString() {
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85 return ("" + proxyIP.getHostName() + ":" + proxyPort + "\tVersion " + version);
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86 }
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87
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88
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89 //Public Static(Class) Methods
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90 //==============================
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91
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92 /**
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93 * Sets SOCKS4 proxy as default.
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94 @param hostName Host name on which SOCKS4 server is running.
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95 @param port Port on which SOCKS4 server is running.
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96 @param user Username to use for communications with proxy.
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97 */
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98 public static void setDefaultProxy(String hostName, int port, String user)
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99 throws UnknownHostException {
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100 defaultProxy = new Socks4Proxy(hostName, port, user);
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101 }
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102
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103 /**
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104 * Sets SOCKS4 proxy as default.
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105 @param ipAddress Host address on which SOCKS4 server is running.
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106 @param port Port on which SOCKS4 server is running.
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107 @param user Username to use for communications with proxy.
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108 */
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109 public static void setDefaultProxy(InetAddress ipAddress, int port,
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110 String user) {
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111 defaultProxy = new Socks4Proxy(ipAddress, port, user);
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112 }
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113 /**
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114 * Sets SOCKS5 proxy as default.
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115 * Default proxy only supports no-authentication.
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116 @param hostName Host name on which SOCKS5 server is running.
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117 @param port Port on which SOCKS5 server is running.
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118 */
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119 public static void setDefaultProxy(String hostName, int port)
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120 throws UnknownHostException {
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121 defaultProxy = new Socks5Proxy(hostName, port);
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122 }
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123 /**
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124 * Sets SOCKS5 proxy as default.
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125 * Default proxy only supports no-authentication.
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126 @param ipAddress Host address on which SOCKS5 server is running.
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127 @param port Port on which SOCKS5 server is running.
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128 */
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129 public static void setDefaultProxy(InetAddress ipAddress, int port) {
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130 defaultProxy = new Socks5Proxy(ipAddress, port);
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131 }
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132 /**
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133 * Sets default proxy.
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134 @param p Proxy to use as default proxy.
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135 */
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136 public static void setDefaultProxy(Proxy p) {
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137 defaultProxy = p;
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138 }
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139
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140 /**
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141 Get current default proxy.
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142 * @return Current default proxy, or null if none is set.
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143 */
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144 public static Proxy getDefaultProxy() {
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145 return defaultProxy;
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146 }
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147
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148 /**
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149 Parses strings in the form: host[:port:user:password], and creates
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150 proxy from information obtained from parsing.
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151 <p>
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152 Defaults: port = 1080.<br>
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153 If user specified but not password, creates Socks4Proxy, if user
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154 not specified creates Socks5Proxy, if both user and password are
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155 speciefied creates Socks5Proxy with user/password authentication.
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156 @param proxy_entry String in the form host[:port:user:password]
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157 @return Proxy created from the string, null if entry was somehow
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158 invalid(host unknown for example, or empty string)
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159 */
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160 public static Proxy parseProxy(String proxy_entry) {
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161 String proxy_host;
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162 int proxy_port = 1080;
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163 String proxy_user = null;
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164 String proxy_password = null;
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165 Proxy proxy;
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166 java.util.StringTokenizer st = new java.util.StringTokenizer(
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167 proxy_entry, ":");
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168
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169 if (st.countTokens() < 1) return null;
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170
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171 proxy_host = st.nextToken();
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172
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173 if (st.hasMoreTokens())
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
174 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
175 proxy_port = Integer.parseInt(st.nextToken().trim());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
176 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
177 catch (NumberFormatException nfe) {}
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
178
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
179 if (st.hasMoreTokens())
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
180 proxy_user = st.nextToken();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
181
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
182 if (st.hasMoreTokens())
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
183 proxy_password = st.nextToken();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
184
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
185 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
186 if (proxy_user == null)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
187 proxy = new Socks5Proxy(proxy_host, proxy_port);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
188 else if (proxy_password == null)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
189 proxy = new Socks4Proxy(proxy_host, proxy_port, proxy_user);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
190 else {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
191 proxy = new Socks5Proxy(proxy_host, proxy_port);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
192 /*
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
193 UserPasswordAuthentication upa = new UserPasswordAuthentication(
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
194 proxy_user, proxy_password);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
195
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
196 ((Socks5Proxy)proxy).setAuthenticationMethod(upa.METHOD_ID,upa);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
197 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
198 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
199 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
200 catch (UnknownHostException uhe) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
201 return null;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
202 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
203
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
204 return proxy;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
205 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
206
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
207
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
208 //Protected Methods
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
209 //=================
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
210
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
211 protected void startSession()throws SocksException {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
212 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
213 proxySocket = new Socket(proxyIP, proxyPort);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
214 in = proxySocket.getInputStream();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
215 out = proxySocket.getOutputStream();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
216 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
217 catch (SocksException se) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
218 throw se;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
219 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
220 catch (IOException io_ex) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
221 throw new SocksException(SOCKS_PROXY_IO_ERROR, "" + io_ex);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
222 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
223 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
224
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
225 protected abstract Proxy copy();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
226 protected abstract ProxyMessage formMessage(int cmd, InetAddress ip, int port);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
227 protected abstract ProxyMessage formMessage(int cmd, String host, int port)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
228 throws UnknownHostException;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
229 protected abstract ProxyMessage formMessage(InputStream in)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
230 throws SocksException,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
231 IOException;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
232
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
233
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
234 protected ProxyMessage connect(InetAddress ip, int port)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
235 throws SocksException {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
236 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
237 startSession();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
238 ProxyMessage request = formMessage(SOCKS_CMD_CONNECT,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
239 ip, port);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
240 return exchange(request);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
241 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
242 catch (SocksException se) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
243 endSession();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
244 throw se;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
245 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
246 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
247 protected ProxyMessage connect(String host, int port)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
248 throws UnknownHostException, SocksException {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
249 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
250 startSession();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
251 ProxyMessage request = formMessage(SOCKS_CMD_CONNECT,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
252 host, port);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
253 return exchange(request);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
254 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
255 catch (SocksException se) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
256 endSession();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
257 throw se;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
258 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
259 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
260
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
261 protected ProxyMessage bind(InetAddress ip, int port)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
262 throws SocksException {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
263 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
264 startSession();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
265 ProxyMessage request = formMessage(SOCKS_CMD_BIND,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
266 ip, port);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
267 return exchange(request);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
268 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
269 catch (SocksException se) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
270 endSession();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
271 throw se;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
272 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
273 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
274 protected ProxyMessage bind(String host, int port)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
275 throws UnknownHostException, SocksException {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
276 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
277 startSession();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
278 ProxyMessage request = formMessage(SOCKS_CMD_BIND,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
279 host, port);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
280 return exchange(request);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
281 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
282 catch (SocksException se) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
283 endSession();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
284 throw se;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
285 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
286 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
287
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
288 protected ProxyMessage accept()
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
289 throws IOException, SocksException {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
290 ProxyMessage msg;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
291
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
292 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
293 msg = formMessage(in);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
294 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
295 catch (InterruptedIOException iioe) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
296 throw iioe;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
297 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
298 catch (IOException io_ex) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
299 endSession();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
300 throw new SocksException(SOCKS_PROXY_IO_ERROR, "While Trying accept:"
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
301 + io_ex);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
302 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
303
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
304 return msg;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
305 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
306
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
307 protected ProxyMessage udpAssociate(InetAddress ip, int port)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
308 throws SocksException {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
309 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
310 startSession();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
311 ProxyMessage request = formMessage(SOCKS_CMD_UDP_ASSOCIATE,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
312 ip, port);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
313
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
314 if (request != null)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
315 return exchange(request);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
316 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
317 catch (SocksException se) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
318 endSession();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
319 throw se;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
320 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
321
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
322 //Only get here if request was null
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
323 endSession();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
324 throw new SocksException(SOCKS_METHOD_NOTSUPPORTED,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
325 "This version of proxy does not support UDP associate, use version 5");
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
326 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
327 protected ProxyMessage udpAssociate(String host, int port)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
328 throws UnknownHostException, SocksException {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
329 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
330 startSession();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
331 ProxyMessage request = formMessage(SOCKS_CMD_UDP_ASSOCIATE,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
332 host, port);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
333
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
334 if (request != null) return exchange(request);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
335 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
336 catch (SocksException se) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
337 endSession();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
338 throw se;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
339 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
340
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
341 //Only get here if request was null
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
342 endSession();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
343 throw new SocksException(SOCKS_METHOD_NOTSUPPORTED,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
344 "This version of proxy does not support UDP associate, use version 5");
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
345 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
346
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
347
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
348 protected void endSession() {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
349 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
350 if (proxySocket != null) proxySocket.close();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
351
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
352 proxySocket = null;
0ce5cc452d02 initial version
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353 }
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354 catch (IOException io_ex) {
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355 }
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356 }
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357
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358 /**
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359 *Sends the request to SOCKS server
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360 */
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361 protected void sendMsg(ProxyMessage msg)throws SocksException,
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362 IOException {
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363 msg.write(out);
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364 }
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365
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366 /**
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367 * Reads the reply from the SOCKS server
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368 */
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369 protected ProxyMessage readMsg()throws SocksException,
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370 IOException {
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371 return formMessage(in);
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372 }
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373 /**
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374 *Sends the request reads reply and returns it
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375 *throws exception if something wrong with IO
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376 *or the reply code is not zero
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377 */
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378 protected ProxyMessage exchange(ProxyMessage request)
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379 throws SocksException {
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380 ProxyMessage reply;
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381
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382 try {
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383 request.write(out);
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384 reply = formMessage(in);
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385 }
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386 catch (SocksException s_ex) {
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387 throw s_ex;
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388 }
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389 catch (IOException ioe) {
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390 throw(new SocksException(SOCKS_PROXY_IO_ERROR, "" + ioe));
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391 }
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392
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393 return reply;
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394 }
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395
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396
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397 //Private methods
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398 //===============
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399
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400
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401 //Constants
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402
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403 public static final int SOCKS_SUCCESS = 0;
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404 public static final int SOCKS_FAILURE = 1;
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405 public static final int SOCKS_BADCONNECT = 2;
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406 public static final int SOCKS_BADNETWORK = 3;
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407 public static final int SOCKS_HOST_UNREACHABLE = 4;
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408 public static final int SOCKS_CONNECTION_REFUSED = 5;
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409 public static final int SOCKS_TTL_EXPIRE = 6;
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410 public static final int SOCKS_CMD_NOT_SUPPORTED = 7;
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411 public static final int SOCKS_ADDR_NOT_SUPPORTED = 8;
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412
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413 public static final int SOCKS_NO_PROXY = 1 << 16;
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414 public static final int SOCKS_PROXY_NO_CONNECT = 2 << 16;
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415 public static final int SOCKS_PROXY_IO_ERROR = 3 << 16;
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416 public static final int SOCKS_AUTH_NOT_SUPPORTED = 4 << 16;
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417 public static final int SOCKS_AUTH_FAILURE = 5 << 16;
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418 public static final int SOCKS_JUST_ERROR = 6 << 16;
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419
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420 public static final int SOCKS_DIRECT_FAILED = 7 << 16;
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421 public static final int SOCKS_METHOD_NOTSUPPORTED = 8 << 16;
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422
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423
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424 public static final int SOCKS_CMD_CONNECT = 0x1;
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425 static final int SOCKS_CMD_BIND = 0x2;
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426 static final int SOCKS_CMD_UDP_ASSOCIATE = 0x3;
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427
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428 }