1 /*

     2  * Copyright 2005 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 package sun.net.www.protocol.http;

    27 import java.io.IOException;

    28 import java.net.Authenticator;

    29 import java.net.PasswordAuthentication;

    30 import java.util.Arrays;

    31 import javax.security.auth.callback.Callback;

    32 import javax.security.auth.callback.CallbackHandler;

    33 import javax.security.auth.callback.NameCallback;

    34 import javax.security.auth.callback.PasswordCallback;

    35 import javax.security.auth.callback.UnsupportedCallbackException;

    36 

    37 /**

    38  * @since 1.6

    39  */

    40 public class NegotiateCallbackHandler implements CallbackHandler {

    41 

    42     private String username;

    43     private char[] password;

    44 

    45     public void handle(Callback[] callbacks) throws

    46             UnsupportedCallbackException, IOException {

    47         for (int i=0; i<callbacks.length; i++) {

    48             Callback callBack = callbacks[i];

    49 

    50             if (callBack instanceof NameCallback) {

    51                 if (username == null) {

    52                     PasswordAuthentication passAuth =

    53                             Authenticator.requestPasswordAuthentication(

    54                             null, null, 0, null,

    55                             null, "Negotiate");

    56                     username = passAuth.getUserName();

    57                     password = passAuth.getPassword();

    58                 }

    59                 NameCallback nameCallback =

    60                         (NameCallback)callBack;

    61                 nameCallback.setName(username);

    62 

    63             } else if (callBack instanceof PasswordCallback) {

    64                 PasswordCallback passwordCallback =

    65                         (PasswordCallback)callBack;

    66                 if (password == null) {

    67                     PasswordAuthentication passAuth =

    68                             Authenticator.requestPasswordAuthentication(

    69                             null, null, 0, null,

    70                             null, "Negotiate");

    71                     username = passAuth.getUserName();

    72                     password = passAuth.getPassword();

    73                 }

    74                 passwordCallback.setPassword(password);

    75                 Arrays.fill(password, ' ');

    76             } else {

    77                 throw new UnsupportedCallbackException(callBack,

    78                         "Call back not supported");

    79             }//else

    80         }//for

    81     }

    82 }