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/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
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Copyright (c) 2006-2009 ymnk, JCraft,Inc. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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3. The names of the authors may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
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INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT(INCLUDING
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NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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package com.jcraft.jsch;
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public class UserAuthGSSAPIWithMIC extends UserAuth {
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private static final int SSH_MSG_USERAUTH_GSSAPI_RESPONSE= 60;
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private static final int SSH_MSG_USERAUTH_GSSAPI_TOKEN= 61;
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private static final int SSH_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE=63;
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private static final int SSH_MSG_USERAUTH_GSSAPI_ERROR= 64;
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private static final int SSH_MSG_USERAUTH_GSSAPI_ERRTOK= 65;
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private static final int SSH_MSG_USERAUTH_GSSAPI_MIC= 66;
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private static final byte[][] supported_oid={
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// OID 1.2.840.113554.1.2.2 in DER
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{(byte)0x6,(byte)0x9,(byte)0x2a,(byte)0x86,(byte)0x48,
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(byte)0x86,(byte)0xf7,(byte)0x12,(byte)0x1,(byte)0x2,
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private static final String[] supported_method={
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"gssapi-with-mic.krb5"
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public boolean start(Session session)throws Exception{
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byte[] _username=Util.str2byte(username);
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// byte SSH_MSG_USERAUTH_REQUEST(50)
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// string user name(in ISO-10646 UTF-8 encoding)
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// string service name(in US-ASCII)
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// string "gssapi"(US-ASCII)
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// uint32 n, the number of OIDs client supports
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// string[n] mechanism OIDS
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buf.putByte((byte)SSH_MSG_USERAUTH_REQUEST);
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buf.putString(_username);
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buf.putString("ssh-connection".getBytes());
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buf.putString("gssapi-with-mic".getBytes());
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buf.putInt(supported_oid.length);
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for(int i=0; i<supported_oid.length; i++){
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buf.putString(supported_oid[i]);
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session.write(packet);
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buf=session.read(buf);
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command=buf.getCommand()&0xff;
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if(command==SSH_MSG_USERAUTH_FAILURE){
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if(command==SSH_MSG_USERAUTH_GSSAPI_RESPONSE){
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buf.getInt(); buf.getByte(); buf.getByte();
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byte[] message=buf.getString();
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for(int i=0; i<supported_oid.length; i++){
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if(Util.array_equals(message, supported_oid[i])){
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method=supported_method[i];
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if(command==SSH_MSG_USERAUTH_BANNER){
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buf.getInt(); buf.getByte(); buf.getByte();
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byte[] _message=buf.getString();
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byte[] lang=buf.getString();
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String message=Util.byte2str(_message);
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userinfo.showMessage(message);
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GSSContext context=null;
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Class c=Class.forName(session.getConfig(method));
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context=(GSSContext)(c.newInstance());
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context.create(username, session.host);
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catch(JSchException e){
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byte[] token=new byte[0];
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while(!context.isEstablished()){
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token=context.init(token, 0, token.length);
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catch(JSchException e){
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// ERRTOK should be sent?
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// byte SSH_MSG_USERAUTH_GSSAPI_ERRTOK
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// string error token
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buf.putByte((byte)SSH_MSG_USERAUTH_GSSAPI_TOKEN);
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buf.putString(token);
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session.write(packet);
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if(!context.isEstablished()){
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buf=session.read(buf);
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command=buf.getCommand()&0xff;
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if(command==SSH_MSG_USERAUTH_GSSAPI_ERROR){
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// uint32 major_status
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// uint32 minor_status
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// string language tag
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buf=session.read(buf);
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command=buf.getCommand()&0xff;
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else if(command==SSH_MSG_USERAUTH_GSSAPI_ERRTOK){
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// string error token
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buf=session.read(buf);
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command=buf.getCommand()&0xff;
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if(command==SSH_MSG_USERAUTH_FAILURE){
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buf.getInt(); buf.getByte(); buf.getByte();
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token=buf.getString();
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Buffer mbuf=new Buffer();
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// string session identifier
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// byte SSH_MSG_USERAUTH_REQUEST
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// string "gssapi-with-mic"
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mbuf.putString(session.getSessionId());
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mbuf.putByte((byte)SSH_MSG_USERAUTH_REQUEST);
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mbuf.putString(_username);
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mbuf.putString("ssh-connection".getBytes());
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mbuf.putString("gssapi-with-mic".getBytes());
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byte[] mic=context.getMIC(mbuf.buffer, 0, mbuf.getLength());
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buf.putByte((byte)SSH_MSG_USERAUTH_GSSAPI_MIC);
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session.write(packet);
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buf=session.read(buf);
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command=buf.getCommand()&0xff;
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if(command==SSH_MSG_USERAUTH_SUCCESS){
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else if(command==SSH_MSG_USERAUTH_FAILURE){
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buf.getInt(); buf.getByte(); buf.getByte();
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byte[] foo=buf.getString();
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int partial_success=buf.getByte();
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//System.err.println(new String(foo)+
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// " partial_success:"+(partial_success!=0));
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if(partial_success!=0){
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throw new JSchPartialAuthException(new String(foo));
added
removed
src/com/jcraft/jsch/UserAuthGSSAPIWithMIC.java
