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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).

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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014 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.external;

import java.util.Map;

import javax.security.auth.callback.CallbackHandler;
import javax.security.sasl.Sasl;
import javax.security.sasl.SaslException;
import javax.security.sasl.SaslServer;
import javax.security.sasl.SaslServerFactory;

import org.kohsuke.MetaInfServices;
import org.wildfly.common.array.Arrays2;
import org.wildfly.security.sasl.WildFlySasl;
import org.wildfly.security.sasl.util.SaslMechanismInformation;

import static org.wildfly.security.sasl.WildFlySasl.SASL_SKIP_CERTIFICATE_VERIFICATION;

/**
 * Implementation of the SASL {@code EXTERNAL} server mechanism.  See RFC 4422
 * appendix A for more information about the {@code EXTERNAL} mechanism.
 *
 * @author David M. Lloyd
 */
@MetaInfServices(SaslServerFactory.class)
public final class ExternalSaslServerFactory implements SaslServerFactory {

    public SaslServer createSaslServer(final String mechanism, final String protocol, final String serverName, final Map props, final CallbackHandler cbh) throws SaslException {
        Object skipCertVerificationProp = props == null ? null : props.get(SASL_SKIP_CERTIFICATE_VERIFICATION);
        String skipCertVerification = skipCertVerificationProp instanceof String ? (String) skipCertVerificationProp : null;
        return mechanism.equals(SaslMechanismInformation.Names.EXTERNAL) && getMechanismNames(props, false).length != 0 ? new ExternalSaslServer(cbh, Boolean.parseBoolean(skipCertVerification)) : null;
    }

    private String[] getMechanismNames(final Map props, boolean query) {
        if (props == null) {
            return Arrays2.of(SaslMechanismInformation.Names.EXTERNAL);
        }
        if ("true".equals(props.get(WildFlySasl.MECHANISM_QUERY_ALL)) && query) {
            return Arrays2.of(SaslMechanismInformation.Names.EXTERNAL);
        }
        if ("true".equals(props.get(Sasl.POLICY_FORWARD_SECRECY))
                || "true".equals(props.get(Sasl.POLICY_PASS_CREDENTIALS))
                || "true".equals(props.get(Sasl.POLICY_NOANONYMOUS))) {
            return WildFlySasl.NO_NAMES;
        }
        return Arrays2.of(SaslMechanismInformation.Names.EXTERNAL);
    }

    @Override
    public String[] getMechanismNames(Map props) {
        return getMechanismNames(props, true);
    }

}