/*

 * reserved comment block

 * DO NOT REMOVE OR ALTER!

 */

/*

 * Copyright 2001-2005 The Apache Software Foundation.

 *

 * 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 com.sun.org.apache.xerces.internal.parsers;

import com.sun.org.apache.xerces.internal.impl.Constants;

import com.sun.org.apache.xerces.internal.xni.grammars.XMLGrammarPool;

import com.sun.org.apache.xerces.internal.xni.parser.XMLComponentManager;

import com.sun.org.apache.xerces.internal.util.SymbolTable;

import com.sun.org.apache.xerces.internal.utils.XMLSecurityManager;

/**

 * This configuration allows Xerces to behave in a security-conscious manner; that is,

 * it permits applications to instruct Xerces to limit certain

 * operations that could be exploited by malicious document authors to cause a denail-of-service

 * attack when the document is parsed.

 *

 * In addition to the features and properties recognized by the base

 * parser configuration, this class recognizes these additional

 * features and properties:

 * <ul>

 * <li>Properties

 *  <ul>

 *   <li>http://apache.org/xml/properties/security-manager</li>

 *  </ul>

 * </ul>

 *

 * @author Neil Graham, IBM

 *

 */

public class SecurityConfiguration extends XIncludeAwareParserConfiguration

{

    //

    // Constants

    //

    protected static final String SECURITY_MANAGER_PROPERTY =

        Constants.XERCES_PROPERTY_PREFIX + Constants.SECURITY_MANAGER_PROPERTY;

    //

    // Constructors

    //

    /** Default constructor. */

    public SecurityConfiguration () {

        this(null, null, null);

    } // <init>()

    /**

     * Constructs a parser configuration using the specified symbol table.

     *

     * @param symbolTable The symbol table to use.

     */

    public SecurityConfiguration (SymbolTable symbolTable) {

        this(symbolTable, null, null);

    } // <init>(SymbolTable)

    /**

     * Constructs a parser configuration using the specified symbol table and

     * grammar pool.

     * <p>

     * <strong>REVISIT:</strong>

     * Grammar pool will be updated when the new validation engine is

     * implemented.

     *

     * @param symbolTable The symbol table to use.

     * @param grammarPool The grammar pool to use.

     */

    public SecurityConfiguration (SymbolTable symbolTable,

                                         XMLGrammarPool grammarPool) {

        this(symbolTable, grammarPool, null);

    } // <init>(SymbolTable,XMLGrammarPool)

    /**

     * Constructs a parser configuration using the specified symbol table,

     * grammar pool, and parent settings.

     * <p>

     * <strong>REVISIT:</strong>

     * Grammar pool will be updated when the new validation engine is

     * implemented.

     *

     * @param symbolTable    The symbol table to use.

     * @param grammarPool    The grammar pool to use.

     * @param parentSettings The parent settings.

     */

    public SecurityConfiguration (SymbolTable symbolTable,

                                         XMLGrammarPool grammarPool,

                                         XMLComponentManager parentSettings) {

        super(symbolTable, grammarPool, parentSettings);

        // create the SecurityManager property:

        setProperty(SECURITY_MANAGER_PROPERTY, new XMLSecurityManager(true));

    } // <init>(SymbolTable,XMLGrammarPool)

} // class SecurityConfiguration