/*

 * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

/*

 * @test

 * @summary SASL: auth-conf negotiated, but unencrypted data is accepted,

  *         reset to unencrypt

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

 */

import javax.security.auth.callback.Callback;

import javax.security.auth.callback.CallbackHandler;

import javax.security.auth.callback.UnsupportedCallbackException;

import javax.security.sasl.AuthorizeCallback;

import javax.security.sasl.RealmCallback;

import javax.security.sasl.Sasl;

import javax.security.sasl.SaslServer;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.PrintStream;

import java.util.HashMap;

import java.util.logging.ConsoleHandler;

import java.util.logging.Handler;

import java.util.logging.Level;

import java.util.logging.Logger;

import org.ietf.jgss.*;

import sun.security.jgss.GSSUtil;

public class SaslGSS {

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

        String name = "host." + OneKDC.REALM_LOWER_CASE;

        new OneKDC(null).writeJAASConf();

        System.setProperty("javax.security.auth.useSubjectCredsOnly", "false");

        // Client in JGSS so that it can control wrap privacy mode

        GSSManager m = GSSManager.getInstance();

        GSSContext sc = m.createContext(

                        m.createName(OneKDC.SERVER, GSSUtil.NT_GSS_KRB5_PRINCIPAL),

                        GSSUtil.GSS_KRB5_MECH_OID,

                        null,

                        GSSContext.DEFAULT_LIFETIME);

        sc.requestMutualAuth(false);

        // Server in SASL

        final HashMap props = new HashMap();

        props.put(Sasl.QOP, "auth-conf");

        SaslServer ss = Sasl.createSaslServer("GSSAPI", "server",

                name, props,

                new CallbackHandler() {

                    public void handle(Callback[] callbacks)

                            throws IOException, UnsupportedCallbackException {

                        for (Callback cb : callbacks) {

                            if (cb instanceof RealmCallback) {

                                ((RealmCallback) cb).setText(OneKDC.REALM);

                            } else if (cb instanceof AuthorizeCallback) {

                                ((AuthorizeCallback) cb).setAuthorized(true);

                            }

                        }

                    }

                });

        ByteArrayOutputStream bout = new ByteArrayOutputStream();

        PrintStream oldErr = System.err;

        System.setErr(new PrintStream(bout));

        Logger.getLogger("javax.security.sasl").setLevel(Level.ALL);

        Handler h = new ConsoleHandler();

        h.setLevel(Level.ALL);

        Logger.getLogger("javax.security.sasl").addHandler(h);

        byte[] token = new byte[0];

        try {

            // Handshake

            token = sc.initSecContext(token, 0, token.length);

            token = ss.evaluateResponse(token);

            token = sc.unwrap(token, 0, token.length, new MessageProp(0, false));

            token[0] = (byte)(((token[0] & 4) != 0) ? 4 : 2);

            token = sc.wrap(token, 0, token.length, new MessageProp(0, false));

            ss.evaluateResponse(token);

        } finally {

            System.setErr(oldErr);

        }

        // Talk

        // 1. Client sends a auth-int message

        byte[] hello = "hello".getBytes();

        MessageProp qop = new MessageProp(0, false);

        token = sc.wrap(hello, 0, hello.length, qop);

        // 2. Server accepts it anyway

        ss.unwrap(token, 0, token.length);

        // 3. Server sends a message

        token = ss.wrap(hello, 0, hello.length);

        // 4. Client accepts, should be auth-conf

        sc.unwrap(token, 0, token.length, qop);

        if (!qop.getPrivacy()) {

            throw new Exception();

        }

        for (String s: bout.toString().split("\\n")) {

            if (s.contains("KRB5SRV04") && s.contains("NULL")) {

                return;

            }

        }

        System.out.println("=======================");

        System.out.println(bout.toString());

        System.out.println("=======================");

        throw new Exception("Haven't seen KRB5SRV04 with NULL");

    }

}