/*

 * Copyright (c) 2013, 2021, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package com.sun.org.apache.xalan.internal.utils;

import javax.xml.XMLConstants;

import jdk.xml.internal.JdkConstants;

/**

 * This class manages security related properties

 *

 */

public final class XMLSecurityPropertyManager extends FeaturePropertyBase {

    /**

     * Properties managed by the security property manager

     */

    public static enum Property {

        ACCESS_EXTERNAL_DTD(XMLConstants.ACCESS_EXTERNAL_DTD,

                JdkConstants.EXTERNAL_ACCESS_DEFAULT),

        ACCESS_EXTERNAL_STYLESHEET(XMLConstants.ACCESS_EXTERNAL_STYLESHEET,

                JdkConstants.EXTERNAL_ACCESS_DEFAULT);

        final String name;

        final String defaultValue;

        Property(String name, String value) {

            this.name = name;

            this.defaultValue = value;

        }

        public boolean equalsName(String propertyName) {

            return (propertyName == null) ? false : name.equals(propertyName);

        }

        String defaultValue() {

            return defaultValue;

        }

    }

    /**

     * Default constructor. Establishes default values

     */

    public XMLSecurityPropertyManager() {

        values = new String[Property.values().length];

        for (Property property : Property.values()) {

            values[property.ordinal()] = property.defaultValue();

        }

        //read system properties or jaxp.properties

        readSystemProperties();

    }

    /**

     * Get the index by property name

     * @param propertyName property name

     * @return the index of the property if found; return -1 if not

     */

    public int getIndex(String propertyName){

        for (Property property : Property.values()) {

            if (property.equalsName(propertyName)) {

                //internally, ordinal is used as index

                return property.ordinal();

            }

        }

        return -1;

    }

    /**

     * Read from system properties, or those in jaxp.properties

     */

    private void readSystemProperties() {

        getSystemProperty(Property.ACCESS_EXTERNAL_DTD,

                JdkConstants.SP_ACCESS_EXTERNAL_DTD);

        getSystemProperty(Property.ACCESS_EXTERNAL_STYLESHEET,

                JdkConstants.SP_ACCESS_EXTERNAL_STYLESHEET);

    }

}