Mercurial > 510Connectbot

annotate src/net/sourceforge/jsocks/server/IdentAuthenticator.java @ 374:597138203c15

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
debug kex error
author Carl Byington <carl@five-ten-sg.com>
date Mon, 04 Aug 2014 14:02:00 -0700
parents 72de889ecfe7
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
350
72de889ecfe7 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents: 349
diff changeset
1 package net.sourceforge.jsocks.server;
349
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
2 import net.sourceforge.jsocks.InetRange;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
3 import net.sourceforge.jsocks.ProxyMessage;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
4 import java.util.Hashtable;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
5 import java.util.Vector;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
6 import java.util.Enumeration;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
7 import java.net.*;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
8 import java.io.*;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
9
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
10 /**
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
11 An implementation of socks.ServerAuthentication which provides
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
12 simple authentication based on the host from which the connection
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
13 is made and the name of the user on the remote machine, as reported
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
14 by identd daemon on the remote machine.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
15 <p>
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
16 It can also be used to provide authentication based only on the contacting
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
17 host address.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
18 */
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
19
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
20 public class IdentAuthenticator extends ServerAuthenticatorNone{
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
21 /** Vector of InetRanges */
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
22 Vector hosts;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
23
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
24 /** Vector of user hashes*/
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
25 Vector users;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
26
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
27 String user;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
28
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
29
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
30 /**
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
31 Constructs empty IdentAuthenticator.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
32 */
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
33 public IdentAuthenticator(){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
34 hosts = new Vector();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
35 users = new Vector();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
36 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
37 /**
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
38 Used to create instances returned from startSession.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
39 @param in Input stream.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
40 @param out OutputStream.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
41 @param user Username associated with this connection,could be
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
42 null if name was not required.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
43 */
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
44 IdentAuthenticator(InputStream in,OutputStream out, String user){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
45 super(in,out);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
46 this.user = user;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
47 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
48
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
49 /**
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
50 Adds range of addresses from which connection is allowed. Hashtable
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
51 users should contain user names as keys and anything as values
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
52 (value is not used and will be ignored).
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
53 @param hostRange Range of ip addresses from which connection is allowed.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
54 @param users Hashtable of users for whom connection is allowed, or null
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
55 to indicate that anybody is allowed to connect from the hosts within given
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
56 range.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
57 */
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
58 public synchronized void add(InetRange hostRange,Hashtable users){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
59 this.hosts.addElement(hostRange);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
60 this.users.addElement(users);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
61 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
62
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
63 /**
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
64 Grants permission only to those users, who connect from one of the
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
65 hosts registered with add(InetRange,Hashtable) and whose names, as
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
66 reported by identd daemon, are listed for the host the connection
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
67 came from.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
68 */
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
69 public ServerAuthenticator startSession(Socket s)
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
70 throws IOException{
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
71
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
72 int ind = getRangeIndex(s.getInetAddress());
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
73 String user = null;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
74
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
75 //System.out.println("getRangeReturned:"+ind);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
76
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
77 if(ind < 0) return null; //Host is not on the list.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
78
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
79 ServerAuthenticatorNone auth = (ServerAuthenticatorNone)
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
80 super.startSession(s);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
81
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
82 //System.out.println("super.startSession() returned:"+auth);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
83 if(auth == null) return null;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
84
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
85 //do the authentication
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
86
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
87 Hashtable user_names = (Hashtable) users.elementAt(ind);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
88
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
89 if(user_names != null){ //If need to do authentication
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
90 Ident ident;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
91 ident = new Ident(s);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
92 //If can't obtain user name, fail
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
93 if(!ident.successful) return null;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
94 //If user name is not listed for this address, fail
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
95 if(!user_names.containsKey(ident.userName)) return null;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
96 user = ident.userName;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
97 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
98 return new IdentAuthenticator(auth.in,auth.out,user);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
99
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
100 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
101 /**
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
102 For SOCKS5 requests allways returns true. For SOCKS4 requests
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
103 checks wether the user name supplied in the request corresponds
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
104 to the name obtained from the ident daemon.
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
105 */
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
106 public boolean checkRequest(ProxyMessage msg,java.net.Socket s){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
107 //If it's version 5 request, or if anybody is permitted, return true;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
108 if(msg.version == 5 || user == null)
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
109 return true;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
110
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
111 if(msg.version != 4) return false; //Who knows?
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
112
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
113 return user.equals(msg.user);
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
114 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
115
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
116 /** Get String representaion of the IdentAuthenticator.*/
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
117 public String toString(){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
118 String s = "";
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
119
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
120 for(int i=0;i<hosts.size();++i)
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
121 s += "Range:"+hosts.elementAt(i)+"\nUsers:"+userNames(i)+"\n";
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
122 return s;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
123 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
124
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
125 //Private Methods
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
126 //////////////////
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
127 private int getRangeIndex(InetAddress ip){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
128 int index = 0;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
129 Enumeration eEnum = hosts.elements();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
130 while(eEnum.hasMoreElements()){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
131 InetRange ir = (InetRange) eEnum.nextElement();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
132 if(ir.contains(ip)) return index;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
133 index++;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
134 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
135 return -1; //Not found
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
136 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
137
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
138 private String userNames(int i){
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
139 if(users.elementAt(i) == null) return "Everybody is permitted.";
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
140
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
141 Enumeration eEnum = ((Hashtable)users.elementAt(i)).keys();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
142 if(!eEnum.hasMoreElements()) return "";
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
143 String s = eEnum.nextElement().toString();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
144 while(eEnum.hasMoreElements())
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
145 s += "; "+eEnum.nextElement();
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
146
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
147 return s;
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
148 }
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
149
205ee2873330 update jsocks to 2011-03-19
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
150 }