]> Joshua Wise's Git repositories - dumload.git/blame - src/com/jcraft/jsch/UserAuthKeyboardInteractive.java
Fix port usage and always try to add the generated key
[dumload.git] / src / com / jcraft / jsch / UserAuthKeyboardInteractive.java
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JW
1/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
2/*
3Copyright (c) 2002-2010 ymnk, JCraft,Inc. All rights reserved.
4
5Redistribution and use in source and binary forms, with or without
6modification, are permitted provided that the following conditions are met:
7
8 1. Redistributions of source code must retain the above copyright notice,
9 this list of conditions and the following disclaimer.
10
11 2. Redistributions in binary form must reproduce the above copyright
12 notice, this list of conditions and the following disclaimer in
13 the documentation and/or other materials provided with the distribution.
14
15 3. The names of the authors may not be used to endorse or promote products
16 derived from this software without specific prior written permission.
17
18THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
19INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
21INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
22INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
24OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
25LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
26NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
27EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28*/
29
30package com.jcraft.jsch;
31
32class UserAuthKeyboardInteractive extends UserAuth{
33 public boolean start(Session session) throws Exception{
34 super.start(session);
35
36 if(userinfo!=null && !(userinfo instanceof UIKeyboardInteractive)){
37 return false;
38 }
39
40 String dest=username+"@"+session.host;
41 if(session.port!=22){
42 dest+=(":"+session.port);
43 }
44 byte[] password=session.password;
45
46 boolean cancel=false;
47
48 byte[] _username=null;
49 _username=Util.str2byte(username);
50
51 while(true){
52 // send
53 // byte SSH_MSG_USERAUTH_REQUEST(50)
54 // string user name (ISO-10646 UTF-8, as defined in [RFC-2279])
55 // string service name (US-ASCII) "ssh-userauth" ? "ssh-connection"
56 // string "keyboard-interactive" (US-ASCII)
57 // string language tag (as defined in [RFC-3066])
58 // string submethods (ISO-10646 UTF-8)
59 packet.reset();
60 buf.putByte((byte)SSH_MSG_USERAUTH_REQUEST);
61 buf.putString(_username);
62 buf.putString(Util.str2byte("ssh-connection"));
63 //buf.putString("ssh-userauth".getBytes());
64 buf.putString(Util.str2byte("keyboard-interactive"));
65 buf.putString(Util.empty);
66 buf.putString(Util.empty);
67 session.write(packet);
68
69 boolean firsttime=true;
70 loop:
71 while(true){
72 buf=session.read(buf);
73 int command=buf.getCommand()&0xff;
74
75 if(command==SSH_MSG_USERAUTH_SUCCESS){
76 return true;
77 }
78 if(command==SSH_MSG_USERAUTH_BANNER){
79 buf.getInt(); buf.getByte(); buf.getByte();
80 byte[] _message=buf.getString();
81 byte[] lang=buf.getString();
82 String message=Util.byte2str(_message);
83 if(userinfo!=null){
84 userinfo.showMessage(message);
85 }
86 continue loop;
87 }
88 if(command==SSH_MSG_USERAUTH_FAILURE){
89 buf.getInt(); buf.getByte(); buf.getByte();
90 byte[] foo=buf.getString();
91 int partial_success=buf.getByte();
92// System.err.println(new String(foo)+
93// " partial_success:"+(partial_success!=0));
94
95 if(partial_success!=0){
96 throw new JSchPartialAuthException(Util.byte2str(foo));
97 }
98
99 if(firsttime){
100 return false;
101 //throw new JSchException("USERAUTH KI is not supported");
102 //cancel=true; // ??
103 }
104 break;
105 }
106 if(command==SSH_MSG_USERAUTH_INFO_REQUEST){
107 firsttime=false;
108 buf.getInt(); buf.getByte(); buf.getByte();
109 String name=Util.byte2str(buf.getString());
110 String instruction=Util.byte2str(buf.getString());
111 String languate_tag=Util.byte2str(buf.getString());
112 int num=buf.getInt();
113 String[] prompt=new String[num];
114 boolean[] echo=new boolean[num];
115 for(int i=0; i<num; i++){
116 prompt[i]=Util.byte2str(buf.getString());
117 echo[i]=(buf.getByte()!=0);
118 }
119
120 byte[][] response=null;
121
122 if(password!=null &&
123 prompt.length==1 &&
124 !echo[0] &&
125 prompt[0].toLowerCase().startsWith("password:")){
126 response=new byte[1][];
127 response[0]=password;
128 password=null;
129 }
130 else if(num>0
131 ||(name.length()>0 || instruction.length()>0)
132 ){
133 if(userinfo!=null){
134 UIKeyboardInteractive kbi=(UIKeyboardInteractive)userinfo;
135 String[] _response=kbi.promptKeyboardInteractive(dest,
136 name,
137 instruction,
138 prompt,
139 echo);
140 if(_response!=null){
141 response=new byte[_response.length][];
142 for(int i=0; i<_response.length; i++){
143 response[i]=Util.str2byte(_response[i]);
144 }
145 }
146 }
147 }
148
149 // byte SSH_MSG_USERAUTH_INFO_RESPONSE(61)
150 // int num-responses
151 // string response[1] (ISO-10646 UTF-8)
152 // ...
153 // string response[num-responses] (ISO-10646 UTF-8)
154 packet.reset();
155 buf.putByte((byte)SSH_MSG_USERAUTH_INFO_RESPONSE);
156 if(num>0 &&
157 (response==null || // cancel
158 num!=response.length)){
159
160 if(response==null){
161 // working around the bug in OpenSSH ;-<
162 buf.putInt(num);
163 for(int i=0; i<num; i++){
164 buf.putString(Util.empty);
165 }
166 }
167 else{
168 buf.putInt(0);
169 }
170
171 if(response==null)
172 cancel=true;
173 }
174 else{
175 buf.putInt(num);
176 for(int i=0; i<num; i++){
177 buf.putString(response[i]);
178 }
179 }
180 session.write(packet);
181 /*
182 if(cancel)
183 break;
184 */
185 continue loop;
186 }
187 //throw new JSchException("USERAUTH fail ("+command+")");
188 return false;
189 }
190 if(cancel){
191 throw new JSchAuthCancelException("keyboard-interactive");
192 //break;
193 }
194 }
195 //return false;
196 }
197}
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