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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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/*
 * Copyright 2022 Red Hat, Inc.
 *
 * 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.common.xml;

/**
 * Constants to configure the factories.
 * OWASP XML
 * External Entity Prevention Cheatsheet
 * @author Boris Unckel
 * @since 1.6.0.Final
 */
final class FactoryConstants {

    /**
     * This is the PRIMARY defense. If DTDs (doctypes) are disallowed, almost all XML entity attacks are prevented
     * Xerces 2 only:
     * @see{https://xerces.apache.org/xerces2-j/features.html#disallow-doctype-decl}
     */
    public static final String APACHE_DISALLOW_DOCTYPE_DECL = "http://apache.org/xml/features/disallow-doctype-decl";

    /**
     * If you can't completely disable DTDs, then at least do the following. This feature has to be used together with the
     * following one (external-parameter-entities), otherwise it will not protect you from XXE for sure Do not include external
     * general entities.
     * Xerces 1:
     * @see{https://xerces.apache.org/xerces-j/features.html#external-general-entities}
     *
     * Xerces 2:
     * @see{https://xerces.apache.org/xerces2-j/features.html#external-general-entities}
     */
    public static final String XML_EXTERNAL_GENERAL_ENTITIES = "http://xml.org/sax/features/external-general-entities";

    /**
     * This feature has to be used together with the previous one(external-general-entities), otherwise it will not protect you from XXE for sure
     *  Do not include external parameter entities or the external DTD subset.
     * Xerces:
     * @see{https://xerces.apache.org/xerces-j/features.html#external-parameter-entities}
     *
     * Xerces 2:
     * @see{https://xerces.apache.org/xerces2-j/features.html#external-parameter-entities}
     */
    public static final String XML_EXTERNAL_PARAMETER_ENTITIES = "http://xml.org/sax/features/external-parameter-entities";

    /**
     * Disable external DTDs as well.
     */
    public static final String APACHE_LOAD_EXTERNAL_DTD = "http://apache.org/xml/features/nonvalidating/load-external-dtd";

    /**
     * No instance.
     */
    private FactoryConstants() {
        throw new IllegalStateException("No instance");
    }

}