org.wildfly.security.sasl.oauth2.OAuth2SaslClient Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of wildfly-client-all

This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

There is a newer version: 34.0.0.Final

Show newest version

/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2016 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.wildfly.security.sasl.oauth2;

import org.wildfly.common.Assert;
import org.wildfly.security.mechanism.AuthenticationMechanismException;
import org.wildfly.security.mechanism.oauth2.OAuth2Client;
import org.wildfly.security.mechanism.oauth2.OAuth2InitialClientMessage;
import org.wildfly.security.sasl.util.AbstractSaslClient;

import javax.security.auth.callback.CallbackHandler;
import javax.security.sasl.SaslException;

import static org.wildfly.security.mechanism._private.ElytronMessages.saslOAuth2;

/**
 * An OAuth2 Sasl Client based on RFC-7628.
 *
 * @author Pedro Igor
 */
final class OAuth2SaslClient extends AbstractSaslClient {

    private static final int S_FIRST_MESSAGE = 1;
    private static final int S_FINAL_SERVER_RESPONSE = 2;
    private final OAuth2Client oauth2Client;

    OAuth2SaslClient(final String mechanismName, final String protocol, final String serverName, final CallbackHandler callbackHandler, final String authorizationId, OAuth2Client oauth2Client) {
        super(mechanismName, protocol, serverName, callbackHandler, authorizationId, true, saslOAuth2);
        this.oauth2Client = oauth2Client;
        setNegotiationState(S_FIRST_MESSAGE);
    }

    public void dispose() throws SaslException {
        setNegotiationState(FAILED_STATE);
    }

    protected byte[] evaluateMessage(final int state, final byte[] challenge) throws SaslException {
        boolean ok = false;
        try {
            switch (state) {
                case S_FIRST_MESSAGE: {
                    if (challenge.length != 0) {
                        throw saslOAuth2.mechInitialChallengeMustBeEmpty().toSaslException();
                    }

                    OAuth2InitialClientMessage initialResponse = this.oauth2Client.getInitialResponse();

                    setNegotiationState(S_FINAL_SERVER_RESPONSE);
                    ok = true;

                    return initialResponse.getMessage();
                }
                case S_FINAL_SERVER_RESPONSE: {
                    byte[] finalMessage = this.oauth2Client.handleServerResponse(challenge);

                    // successful authentication
                    if (finalMessage == null) {
                        negotiationComplete();
                        ok = true;
                    }

                    return finalMessage;
                }
            }
            throw Assert.impossibleSwitchCase(state);
        } catch (AuthenticationMechanismException e) {
            throw e.toSaslException();
        } finally {
            if (! ok) {
                setNegotiationState(FAILED_STATE);
            }
        }
    }
}