--- a/jdk/src/share/classes/sun/security/jgss/spnego/NegTokenInit.java	Thu Mar 12 10:32:58 2009 -0700
+++ b/jdk/src/share/classes/sun/security/jgss/spnego/NegTokenInit.java	Fri Mar 13 09:20:56 2009 +0800
@@ -1,5 +1,5 @@
 /*
- * Copyright 2005-2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 2005-2009 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
@@ -66,11 +66,11 @@
     private byte[] mechTypes = null;
     private Oid[] mechTypeList = null;
 
-    private byte[] reqFlags = null;
+    private BitArray reqFlags = null;
     private byte[] mechToken = null;
     private byte[] mechListMIC = null;
 
-    NegTokenInit(byte[] mechTypes, byte[] flags,
+    NegTokenInit(byte[] mechTypes, BitArray flags,
                 byte[] token, byte[] mechListMIC)
     {
         super(NEG_TOKEN_INIT_ID);
@@ -101,7 +101,7 @@
             // write context flags with CONTEXT 01
             if (reqFlags != null) {
                 DerOutputStream flags = new DerOutputStream();
-                flags.putBitString(reqFlags);
+                flags.putUnalignedBitString(reqFlags);
                 initToken.write(DerValue.createTag(DerValue.TAG_CONTEXT,
                                                 true, (byte) 0x01), flags);
             }
@@ -237,7 +237,7 @@
         return mechTypeList;
     }
 
-    byte[] getReqFlags() {
+    BitArray getReqFlags() {
         return reqFlags;
     }
 

--- a/jdk/src/share/classes/sun/security/jgss/spnego/SpNegoContext.java	Thu Mar 12 10:32:58 2009 -0700
+++ b/jdk/src/share/classes/sun/security/jgss/spnego/SpNegoContext.java	Fri Mar 13 09:20:56 2009 +0800
@@ -1,5 +1,5 @@
 /*
- * Copyright 2005-2008 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 2005-2009 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
@@ -53,13 +53,6 @@
 
     private int state = STATE_NEW;
 
-    private static final int CHECKSUM_DELEG_FLAG    = 1;
-    private static final int CHECKSUM_MUTUAL_FLAG   = 2;
-    private static final int CHECKSUM_REPLAY_FLAG   = 4;
-    private static final int CHECKSUM_SEQUENCE_FLAG = 8;
-    private static final int CHECKSUM_CONF_FLAG     = 16;
-    private static final int CHECKSUM_INTEG_FLAG    = 32;
-
     /*
      * Optional features that the application can set and their default
      * values.
@@ -697,25 +690,17 @@
     /**
      * get the context flags
      */
-    private byte[] getContextFlags() {
-        int flags = 0;
+    private BitArray getContextFlags() {
+        BitArray out = new BitArray(7);
 
-        if (getCredDelegState())
-            flags |= CHECKSUM_DELEG_FLAG;
-        if (getMutualAuthState())
-            flags |= CHECKSUM_MUTUAL_FLAG;
-        if (getReplayDetState())
-            flags |= CHECKSUM_REPLAY_FLAG;
-        if (getSequenceDetState())
-            flags |= CHECKSUM_SEQUENCE_FLAG;
-        if (getIntegState())
-            flags |= CHECKSUM_INTEG_FLAG;
-        if (getConfState())
-            flags |= CHECKSUM_CONF_FLAG;
+        if (getCredDelegState()) out.set(0, true);
+        if (getMutualAuthState()) out.set(1, true);
+        if (getReplayDetState()) out.set(2, true);
+        if (getSequenceDetState()) out.set(3, true);
+        if (getConfState()) out.set(5, true);
+        if (getIntegState()) out.set(6, true);
 
-        byte[] temp = new byte[1];
-        temp[0] = (byte)(flags & 0xff);
-        return temp;
+        return out;
     }
 
     private void setContextFlags() {

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/sun/security/krb5/auto/SpnegoReqFlags.java	Fri Mar 13 09:20:56 2009 +0800
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2009 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.
+ *
+ * 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.
+ */
+
+/*
+ * @test
+ * @bug 6815182
+ * @summary GSSAPI/SPNEGO does not work with server using MIT Kerberos library
+ */
+
+import sun.security.jgss.GSSUtil;
+import sun.security.util.BitArray;
+import sun.security.util.DerInputStream;
+import sun.security.util.DerValue;
+
+public class SpnegoReqFlags {
+
+    public static void main(String[] args)
+            throws Exception {
+
+        // Create and start the KDC
+        new OneKDC(null).writeJAASConf();
+        new SpnegoReqFlags().go();
+    }
+
+    void go() throws Exception {
+        Context c = Context.fromJAAS("client");
+        c.startAsClient(OneKDC.SERVER, GSSUtil.GSS_SPNEGO_MECH_OID);
+
+        byte[] token = c.doAs(new Action() {
+            @Override
+            public byte[] run(Context me, byte[] input) throws Exception {
+                me.x().requestCredDeleg(true);
+                me.x().requestReplayDet(false);
+                me.x().requestSequenceDet(false);
+                return me.x().initSecContext(new byte[0], 0, 0);
+            }
+        }, null);
+
+        DerValue d = new DerValue(token);   // GSSToken
+        DerInputStream ins = d.data;        // OID + mech token
+        d.data.getDerValue();               // skip OID
+        d = d.data.getDerValue();           // NegTokenInit
+        d = d.data.getDerValue();           // The SEQUENCE inside
+
+        boolean found = false;
+
+        // Go through all fields inside NegTokenInit. The reqFlags field
+        // is optional. It's even not recommended in RFC 4178.
+        while (d.data.available() > 0) {
+            DerValue d2 = d.data.getDerValue();
+            if (d2.isContextSpecific((byte)1)) {
+                found = true;
+                System.out.println("regFlags field located.");
+                BitArray ba = d2.data.getUnalignedBitString();
+                if (ba.length() != 7) {
+                    throw new Exception("reqFlags should contain 7 bits");
+                }
+                if (!ba.get(0)) {
+                    throw new Exception("delegFlag should be true");
+                }
+                if (ba.get(2) || ba.get(3)) {
+                    throw new Exception("replay/sequenceFlag should be false");
+                }
+            }
+        }
+
+        if (!found) {
+            System.out.println("Warning: regFlags field not found, too new?");
+        }
+        c.dispose();
+    }
+}