/*
* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package sun.net.www.protocol.http;
import java.io.IOException;
import java.net.Authenticator;
import java.net.PasswordAuthentication;
import java.util.Arrays;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
/**
* @since 1.6
*/
public class NegotiateCallbackHandler implements CallbackHandler {
private String username;
private char[] password;
public void handle(Callback[] callbacks) throws
UnsupportedCallbackException, IOException {
for (int i=0; i<callbacks.length; i++) {
Callback callBack = callbacks[i];
if (callBack instanceof NameCallback) {
if (username == null) {
PasswordAuthentication passAuth =
Authenticator.requestPasswordAuthentication(
null, null, 0, null,
null, "Negotiate");
username = passAuth.getUserName();
password = passAuth.getPassword();
}
NameCallback nameCallback =
(NameCallback)callBack;
nameCallback.setName(username);
} else if (callBack instanceof PasswordCallback) {
PasswordCallback passwordCallback =
(PasswordCallback)callBack;
if (password == null) {
PasswordAuthentication passAuth =
Authenticator.requestPasswordAuthentication(
null, null, 0, null,
null, "Negotiate");
username = passAuth.getUserName();
password = passAuth.getPassword();
}
passwordCallback.setPassword(password);
Arrays.fill(password, ' ');
} else {
throw new UnsupportedCallbackException(callBack,
"Call back not supported");
}//else
}//for
}
}