import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jcifs.CIFSContext;


/**
 * Represents an NTLMSSP Type-2 message.
 */
public class Type2Message extends NtlmMessage {

    private static final Logger log = LoggerFactory.getLogger(Type2Message.class);

    private byte[] challenge;
    private String target;
    private byte[] context;
    private byte[] targetInformation;

     * environment.
     */
    public Type2Message() {
        this(getDefaultFlags(), null, null);
    }

    /**
     * Creates a Type-2 message in response to the given Type-1 message
     * using default values from the current environment.
     *
     * @param type1 The Type-1 message which this represents a response to.
     */
    public Type2Message(Type1Message type1) {
        this(type1, null, null);

        String target = "TARGET";
        byte[] challenge = new byte[] {
            0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8
        };

        Type2Message t2 = new Type2Message(this.context, flags, challenge, target);
        Type2Message parsed = new Type2Message(t2.toByteArray());
        assertArrayEquals(challenge, parsed.getChallenge());
        assertEquals(target, parsed.getTarget());
    }


    @Test

            final String challenge) throws NTLMEngineException {
        Type2Message type2Message;
        try {
            type2Message = new Type2Message(Base64.getDecoder().decode(challenge));
        } catch (final IOException exception) {
            throw new NTLMEngineException("Invalid NTLM type 2 message", exception);
        }
        final int type2Flags = type2Message.getFlags();

            byte[] src = Base64.decode(msg.substring(5));
            if ( src[ 8 ] == 1 ) {
                Type1Message type1 = new Type1Message(src);
                Type2Message type2 = new Type2Message(tc, type1, challenge, null);
                msg = new String(Base64.encode(type2.toByteArray()), "US-ASCII");
                resp.setHeader("WWW-Authenticate", "NTLM " + msg);
            }

        default:
            throw new SmbException("Invalid state");
        }
    }


    protected byte[] makeAuthenticate ( byte[] token ) throws SmbException {
        try {
            Type2Message msg2 = new Type2Message(token);

            if ( log.isTraceEnabled() ) {
                log.trace(msg2.toString());
                log.trace(Hexdump.toHexString(token));
            }

     *            taking place.
     * @param flags
     * @throws GeneralSecurityException
     * @throws CIFSException
     */
    public Type3Message ( CIFSContext tc, Type2Message type2, String targetName, String password, String domain, String user, String workstation,
            int flags ) throws GeneralSecurityException, CIFSException {

            byte[] src = Base64.decode(msg.substring(5));
            if (src[8] == 1) {
                Type1Message type1 = new Type1Message(src);
                Type2Message type2 = new Type2Message(type1, challenge, null);
                msg = Base64.encode(type2.toByteArray());
                resp.setHeader( "WWW-Authenticate", "NTLM " + msg );
            } else if (src[8] == 3) {

                    user = auth.getUserName();
                    password = new String(auth.getPassword());
                } catch (Exception ex) { }
            }
            Type2Message type2 = (Type2Message) message;
            message = new Type3Message(type2, password, domain, user,
                    Type3Message.getDefaultWorkstation(), 0);
        }
        return message;
    }

     */
    public static byte[] getLMResponse(Type2Message type2, String password) {
        if (type2 == null || password == null) return null;
        return NtlmPasswordAuthentication.getPreNTLMResponse(password,
                type2.getChallenge());
    }

    public static byte[] getLMv2Response(Type2Message type2,
            String domain, String user, String password,