--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/net/www/protocol/http/NegotiateCallbackHandler.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2005 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+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
+    }
+}