Java Code Examples for org.ietf.jgss.GSSContext#requestMutualAuth()

protected byte[] generateGSSToken(
                                   final byte[] input,
                                   final Oid oid ) throws GSSException {

    byte[] token = input;
    if (token == null) {
        token = new byte[0];
    }
    GSSManager manager = getManager();

    GSSName serverName = manager.createName(servicePrincipalName, servicePrincipalOid);

    GSSContext gssContext = manager.createContext(serverName.canonicalize(oid),
                                                  oid,
                                                  null,
                                                  GSSContext.DEFAULT_LIFETIME);
    gssContext.requestMutualAuth(true);
    gssContext.requestCredDeleg(true);
    // Get client to login if not already done
    return gssClient.negotiate(gssContext, token);
}
 

GSSContext initGSS() throws Exception {
    final GSSManager MANAGER = GSSManager.getInstance();

    final PrivilegedExceptionAction<GSSCredential> action = new PrivilegedExceptionAction<GSSCredential>() {
        @Override
        public GSSCredential run() throws GSSException {
            return MANAGER.createCredential(null, GSSCredential.DEFAULT_LIFETIME, KrbConstants.SPNEGO, GSSCredential.INITIATE_ONLY);
        }
    };

    final GSSCredential clientcreds = Subject.doAs(initiatorSubject, action);

    final GSSContext context = MANAGER.createContext(MANAGER.createName(acceptorPrincipal, GSSName.NT_USER_NAME, KrbConstants.SPNEGO),
            KrbConstants.SPNEGO, clientcreds, GSSContext.DEFAULT_LIFETIME);

    //TODO make configurable
    context.requestMutualAuth(true);
    context.requestConf(true);
    context.requestInteg(true);
    context.requestReplayDet(true);
    context.requestSequenceDet(true);
    context.requestCredDeleg(false);

    return context;
}
 

@Override
public Object run() {
  try {
    Oid krb5Mechanism = new Oid("1.2.840.113554.1.2.2");
    Oid krb5PrincipalNameType = new Oid("1.2.840.113554.1.2.2.1");
    final GSSManager manager = GSSManager.getInstance();
    final GSSName clientName = manager.createName(clientPrincipalName, krb5PrincipalNameType);
    final GSSCredential clientCred = manager.createCredential(clientName, 8 * 3600, krb5Mechanism,
        GSSCredential.INITIATE_ONLY);
    final GSSName serverName = manager.createName(serverPrincipalName, krb5PrincipalNameType);

    final GSSContext context = manager.createContext(serverName, krb5Mechanism, clientCred,
        GSSContext.DEFAULT_LIFETIME);
    byte[] inToken = new byte[0];
    byte[] outToken = context.initSecContext(inToken, 0, inToken.length);
    if (outToken == null) {
      throw new FailedRequestException("could not initialize the security context");
    }
    context.requestMutualAuth(true);
    outputToken.append(new String(Base64.getEncoder().encode(outToken)));
    context.dispose();
  } catch (GSSException exception) {
    throw new FailedRequestException(exception.getMessage(), exception);
  }
  return null;
}
 

@Override
public ByteArrayHolder run() throws Exception {
    byte[] token = input;
    if (token == null) {
        token = new byte[0];
    }
    GSSManager manager = getManager();
    String httPrincipal = kerberosConfig.getServerPrincipal().replaceFirst("/.*@", "/" + authServer + "@");
    GSSName serverName = manager.createName(httPrincipal, null);
    GSSContext gssContext = manager.createContext(
            serverName.canonicalize(oid), oid, null, GSSContext.DEFAULT_LIFETIME);
    gssContext.requestMutualAuth(true);
    gssContext.requestCredDeleg(true);
    byte[] outputToken = gssContext.initSecContext(token, 0, token.length);

    ByteArrayHolder result = new ByteArrayHolder();
    result.bytes = outputToken;
    return result;
}
 

private String generateTicket() throws GSSException {
  final GSSManager manager = GSSManager.getInstance();
  // Oid for kerberos principal name
  Oid krb5PrincipalOid = new Oid("1.2.840.113554.1.2.2.1");
  Oid KERB_V5_OID = new Oid("1.2.840.113554.1.2.2");
  final GSSName clientName = manager.createName(principal,
      krb5PrincipalOid);
  final GSSCredential clientCred = manager.createCredential(clientName,
      8 * 3600,
      KERB_V5_OID,
      GSSCredential.INITIATE_ONLY);

  final GSSName serverName = manager.createName(principal, krb5PrincipalOid);

  final GSSContext context = manager.createContext(serverName,
      KERB_V5_OID,
      clientCred,
      GSSContext.DEFAULT_LIFETIME);
  context.requestMutualAuth(true);
  context.requestConf(false);
  context.requestInteg(true);

  final byte[] outToken = context.initSecContext(new byte[0], 0, 0);
  StringBuffer outputBuffer = new StringBuffer();
  outputBuffer.append("Negotiate ");
  outputBuffer.append(Bytes.toString(Base64.getEncoder().encode(outToken)));
  System.out.print("Ticket is: " + outputBuffer);
  return outputBuffer.toString();
}
 

/**
 * Encodes the authentication packet for supported authentication methods.
 * 
 * @param request the socks proxy request data
 * @return the encoded buffer
 * @throws GSSException when something fails while using GSSAPI
 */
private IoBuffer encodeGSSAPIAuthenticationPacket(final SocksProxyRequest request) throws GSSException {
    GSSContext ctx = (GSSContext) getSession().getAttribute(GSS_CONTEXT);
    if (ctx == null) {
        // first step in the authentication process
        GSSManager manager = GSSManager.getInstance();
        GSSName serverName = manager.createName(request.getServiceKerberosName(), null);
        Oid krb5OID = new Oid(SocksProxyConstants.KERBEROS_V5_OID);

        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug("Available mechs:");
            for (Oid o : manager.getMechs()) {
                if (o.equals(krb5OID)) {
                    LOGGER.debug("Found Kerberos V OID available");
                }
                LOGGER.debug("{} with oid = {}", manager.getNamesForMech(o), o);
            }
        }

        ctx = manager.createContext(serverName, krb5OID, null, GSSContext.DEFAULT_LIFETIME);

        ctx.requestMutualAuth(true); // Mutual authentication
        ctx.requestConf(false);
        ctx.requestInteg(false);

        getSession().setAttribute(GSS_CONTEXT, ctx);
    }

    byte[] token = (byte[]) getSession().getAttribute(GSS_TOKEN);
    if (token != null) {
        LOGGER.debug("  Received Token[{}] = {}", token.length, ByteUtilities.asHex(token));
    }
    IoBuffer buf = null;

    if (!ctx.isEstablished()) {
        // token is ignored on the first call
        if (token == null) {
            token = new byte[32];
        }

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

        // Send a token to the server if one was generated by
        // initSecContext
        if (token != null) {
            LOGGER.debug("  Sending Token[{}] = {}", token.length, ByteUtilities.asHex(token));

            getSession().setAttribute(GSS_TOKEN, token);
            buf = IoBuffer.allocate(4 + token.length);
            buf.put(new byte[] { SocksProxyConstants.GSSAPI_AUTH_SUBNEGOTIATION_VERSION,
                    SocksProxyConstants.GSSAPI_MSG_TYPE });

            buf.put(ByteUtilities.intToNetworkByteOrder(token.length, 2));
            buf.put(token);
        }
    }

    return buf;
}