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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.digest;

import java.util.Map;

import javax.security.sasl.Sasl;

import org.wildfly.security.sasl.WildFlySasl;
import org.wildfly.security.sasl.util.SaslMechanismInformation;

/**
 * @author David M. Lloyd
 */
abstract class AbstractDigestFactory {

    private static final String[] MECHS = {
        SaslMechanismInformation.Names.DIGEST_SHA_512,
        SaslMechanismInformation.Names.DIGEST_SHA_512_256,
        SaslMechanismInformation.Names.DIGEST_SHA_256,
        SaslMechanismInformation.Names.DIGEST_SHA_384,
        SaslMechanismInformation.Names.DIGEST_SHA,
        SaslMechanismInformation.Names.DIGEST_MD5,
    };
    private static final String[] NO_MECHS = new String[0];

    @SuppressWarnings("RedundantIfStatement")
    boolean matches(final Map props, boolean query) {
        if (props == null) return true;
        if ("true".equals(props.get(WildFlySasl.MECHANISM_QUERY_ALL)) && query) {
            return true;
        }
        if ("true".equals(props.get(Sasl.POLICY_FORWARD_SECRECY))
            || "true".equals(props.get(Sasl.POLICY_PASS_CREDENTIALS))
            || "true".equals(props.get(Sasl.POLICY_NODICTIONARY))
            || "true".equals(props.get(Sasl.POLICY_NOACTIVE))) {
            return false;
        }
        return true;
    }

    boolean matchesMech(String mechanismName) {
        switch (mechanismName) {
            case SaslMechanismInformation.Names.DIGEST_MD5:
            case SaslMechanismInformation.Names.DIGEST_SHA:
            case SaslMechanismInformation.Names.DIGEST_SHA_256:
            case SaslMechanismInformation.Names.DIGEST_SHA_384:
            case SaslMechanismInformation.Names.DIGEST_SHA_512:
            case SaslMechanismInformation.Names.DIGEST_SHA_512_256: {
                return true;
            }
        }
        return false;
    }

    String select(String[] mechanismNames) {
        for (String mechanismName : mechanismNames) {
            if (matchesMech(mechanismName)) return mechanismName;
        }
        return null;
    }

    public String[] getMechanismNames(final Map props) {
        return matches(props, true) ? MECHS.clone() : NO_MECHS;
    }
}