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 *

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 *

 * 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.

 *

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/*

 * @test

 * @summary SPNEGO auth fails if client proposes MS krb5 OID

 * @compile -XDignore.symbol.file MSOID2.java

 */

import sun.security.jgss.GSSUtil;

import sun.security.util.HexDumpEncoder;

// The basic krb5 test skeleton you can copy from

public class MSOID2 {

    public static void main(String[] args) throws Exception {

        new OneKDC(null).writeJAASConf();

        Context c, s;

        c = Context.fromJAAS("client");

        s = Context.fromJAAS("server");

        c.startAsClient(OneKDC.SERVER, GSSUtil.GSS_SPNEGO_MECH_OID);

        s.startAsServer(GSSUtil.GSS_SPNEGO_MECH_OID);

        byte[] t = new byte[0];

        boolean first = true;

        while (true) {

            if (t != null || !c.x().isEstablished()) t = c.take(t);

            if (first) {

                // Tweak the packet to append an extra OID

                int len = t.length;

                byte[] nt = new byte[len + 11];

                System.arraycopy(t, 0, nt, 0, 0x23);

                System.arraycopy(t, 0x18, nt, 0x23, 11);    // dup the OID

                System.arraycopy(t, 0x23, nt, 0x2e, len-0x23);

                nt[0x1d] = (byte)0x82;  // change the 1st to MS OID

                // Length bytes to be tweaked

                for (int pos: new int[] {3, 0xf, 0x13, 0x15, 0x17}) {

                    int newLen = (nt[pos]&0xff) + 11;

                    // The length byte at nt[pos] might overflow. It's

                    // unlikely for nt[pos-1] to overflow, which means the size

                    // of token is bigger than 65535.

                    if (newLen >= 256) {

                        nt[pos-1] = (byte)(nt[pos-1] + 1);

                    }

                    nt[pos] = (byte)newLen;

                }

                t = nt;

                new HexDumpEncoder().encodeBuffer(t, System.out);

            }

            if (t != null || !s.x().isEstablished()) t = s.take(t);

            if (c.x().isEstablished() && s.x().isEstablished()) break;

            first = false;

        }

        Context.transmit("i say high --", c, s);

        Context.transmit("   you say low", s, c);

        s.dispose();

        c.dispose();

    }

}