org.apache.xerces.parsers.SecurityConfiguration Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.xerces.parsers;
import org.apache.xerces.impl.Constants;
import org.apache.xerces.util.SecurityManager;
import org.apache.xerces.util.SymbolTable;
import org.apache.xerces.xni.grammars.XMLGrammarPool;
import org.apache.xerces.xni.parser.XMLComponentManager;
/**
* 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:
*
* - Properties
*
* - http://apache.org/xml/properties/security-manager
*
*
*
* @author Neil Graham, IBM
*
* @version $Id: SecurityConfiguration.java 699902 2008-09-28 21:40:49Z mrglavas $
*/
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);
} // ()
/**
* Constructs a parser configuration using the specified symbol table.
*
* @param symbolTable The symbol table to use.
*/
public SecurityConfiguration (SymbolTable symbolTable) {
this(symbolTable, null, null);
} // (SymbolTable)
/**
* Constructs a parser configuration using the specified symbol table and
* grammar pool.
*
* REVISIT:
* 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);
} // (SymbolTable,XMLGrammarPool)
/**
* Constructs a parser configuration using the specified symbol table,
* grammar pool, and parent settings.
*
* REVISIT:
* 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 SecurityManager());
} // (SymbolTable,XMLGrammarPool)
} // class SecurityConfiguration