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annotate src/net/sourceforge/jsocks/UserPasswordAuthentication.java @ 349:205ee2873330

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update jsocks to 2011-03-19
author Carl Byington <carl@five-ten-sg.com>
date Fri, 01 Aug 2014 11:23:10 -0700
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1 package net.sourceforge.jsocks;
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2
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3 /**
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4 SOCKS5 User Password authentication scheme.
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5 */
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6 public class UserPasswordAuthentication implements Authentication{
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7
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8 /**SOCKS ID for User/Password authentication method*/
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9 public final static int METHOD_ID = 2;
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10
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11 String userName, password;
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12 byte[] request;
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13
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14 /**
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15 Create an instance of UserPasswordAuthentication.
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16 @param userName User Name to send to SOCKS server.
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17 @param password Password to send to SOCKS server.
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18 */
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19 public UserPasswordAuthentication(String userName,String password){
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20 this.userName = userName;
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21 this.password = password;
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22 formRequest();
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23 }
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24 /** Get the user name.
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25 @return User name.
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26 */
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27 public String getUser(){
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28 return userName;
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29 }
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30 /** Get password
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31 @return Password
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32 */
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33 public String getPassword(){
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34 return password;
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35 }
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36 /**
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37 Does User/Password authentication as defined in rfc1929.
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38 @return An array containnig in, out streams, or null if authentication
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39 fails.
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40 */
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41 public Object[] doSocksAuthentication(int methodId,
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42 java.net.Socket proxySocket)
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43 throws java.io.IOException{
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44
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45 if(methodId != METHOD_ID) return null;
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46
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47 java.io.InputStream in = proxySocket.getInputStream();
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48 java.io.OutputStream out = proxySocket.getOutputStream();
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49
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50 out.write(request);
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51 int version = in.read();
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52 if(version < 0) return null; //Server closed connection
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53 int status = in.read();
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54 if(status != 0) return null; //Server closed connection, or auth failed.
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55
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56 return new Object[] {in,out};
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57 }
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58
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59 //Private methods
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60 //////////////////
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61
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62 /** Convert UserName password in to binary form, ready to be send to server*/
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63 private void formRequest(){
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64 byte[] user_bytes = userName.getBytes();
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65 byte[] password_bytes = password.getBytes();
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66
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67 request = new byte[3+user_bytes.length+password_bytes.length];
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68 request[0] = (byte) 1;
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69 request[1] = (byte) user_bytes.length;
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70 System.arraycopy(user_bytes,0,request,2,user_bytes.length);
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71 request[2+user_bytes.length] = (byte) password_bytes.length;
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72 System.arraycopy(password_bytes,0,
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73 request,3+user_bytes.length,password_bytes.length);
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74 }
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75 }