Examples of javax.security.sasl.SaslClient.evaluateChallenge()

javax.security.sasl.SaslClient.evaluateChallenge()
Evaluates the challenge data and generates a response. If a challenge is received from the server during the authentication process, this method is called to prepare an appropriate next response to submit to the server. @param challenge The non-null challenge sent from the server.The challenge array may have zero length. @return The possibly null response to send to the server.It is null if the challenge accompanied a "SUCCESS" status and the challenge only contains data for the client to update its state and no response needs to be sent to the server. The response is a zero-length byte array if the client is to send a response with no data. @exception SaslException If an error occurred while processingthe challenge or generating a response.

                res.throwOnError();


                int conversationId = (Integer) res.get("conversationId");


                while (! (Boolean) res.get("done")) {
                    response = saslClient.evaluateChallenge((byte[]) res.get("payload"));


                    if (response == null) {
                        throw new MongoException("SASL protocol error: no client response to challenge");
                    }

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            // Corner case : the SASL mech might send an initial challenge, and we have to
            // deal with it immediately.
            if ( sc.hasInitialResponse() )
            {
                byte[] challengeResponse = sc.evaluateChallenge( new byte[0] );


                // Stores the challenge's response, and send it to the server
                bindRequest.setCredentials( challengeResponse );
                writeRequest( bindRequest );

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            }


            while ( !sc.isComplete()
                && ( ( result == ResultCodeEnum.SASL_BIND_IN_PROGRESS ) || ( result == ResultCodeEnum.SUCCESS ) ) )
            {
                response = sc.evaluateChallenge( bindResponse.getServerSaslCreds() );


                if ( result == ResultCodeEnum.SUCCESS )
                {
                    if ( response != null )
                    {

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      ByteString saslCredentials;
      if (saslClient.hasInitialResponse())
      {
        try
        {
          byte[] credBytes = saslClient.evaluateChallenge(new byte[0]);
          saslCredentials = ByteString.wrap(credBytes);
        }
        catch (Exception e)
        {
          Message message = ERR_LDAPAUTH_GSSAPI_CANNOT_CREATE_INITIAL_CHALLENGE.

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          byte[] credBytes;
          try
          {
            if (serverSASLCredentials == null)
            {
              credBytes = saslClient.evaluateChallenge(new byte[0]);
            }
            else
            {
              credBytes = saslClient.evaluateChallenge(
                  serverSASLCredentials.toByteArray());

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            {
              credBytes = saslClient.evaluateChallenge(new byte[0]);
            }
            else
            {
              credBytes = saslClient.evaluateChallenge(
                  serverSASLCredentials.toByteArray());
            }
          }
          catch (Exception e)
          {

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            // Corner case : the SASL mech might send an initial challenge, and we have to
            // deal with it immediately.
            if ( sc.hasInitialResponse() )
            {
                byte[] challengeResponse = sc.evaluateChallenge( new byte[0] );


                // Stores the challenge's response, and send it to the server
                bindRequest.setCredentials( challengeResponse );
                writeRequest( bindRequest );

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            }


            while ( !sc.isComplete()
                && ( ( result == ResultCodeEnum.SASL_BIND_IN_PROGRESS ) || ( result == ResultCodeEnum.SUCCESS ) ) )
            {
                response = sc.evaluateChallenge( bindResponse.getServerSaslCreds() );


                if ( result == ResultCodeEnum.SUCCESS )
                {
                    if ( response != null )
                    {

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                    }
                }
            }
        });


        byte[] initialResponse = saslClient.evaluateChallenge(new byte[0]);


        ScramServer scramServer = new ScramServer("SHA-1", new CallbackHandler() {
            @Override
            public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
                for (Callback callback : callbacks) {

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            }
        });


        byte[] challenge = scramServer.evaluateResponse(initialResponse);


        byte[] response = saslClient.evaluateChallenge(challenge);


        byte[] serverFinalMessage = scramServer.evaluateResponse(response);
        Assert.assertTrue(new String(serverFinalMessage).startsWith("v="));
    }
}

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