org.apache.xml.security.stax.impl.processor.input.XMLDecryptInputProcessor Maven / Gradle / Ivy

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Apache XML Security for Java supports XML-Signature Syntax and Processing, W3C Recommendation 12 February 2002, and XML Encryption Syntax and Processing, W3C Recommendation 10 December 2002. As of version 1.4, the library supports the standard Java API JSR-105: XML Digital Signature APIs.
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/**
 * 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.xml.security.stax.impl.processor.input;

import java.util.List;

import javax.crypto.Cipher;
import javax.xml.namespace.QName;

import org.apache.xml.security.binding.xmlenc.EncryptedDataType;
import org.apache.xml.security.exceptions.XMLSecurityException;
import org.apache.xml.security.stax.ext.*;
import org.apache.xml.security.stax.securityToken.InboundSecurityToken;
import org.apache.xml.security.stax.securityToken.SecurityTokenConstants;
import org.apache.xml.security.stax.ext.stax.XMLSecStartElement;
import org.apache.xml.security.stax.securityEvent.*;


/**
 * Processor for decryption of EncryptedData XML structures
 *
 * @author $Author: giger $
 * @version $Revision: 1228829 $ $Date: 2012-01-08 11:44:13 +0000 (Sun, 08 Jan 2012) $
 */
public class XMLDecryptInputProcessor extends AbstractDecryptInputProcessor {
    
    public XMLDecryptInputProcessor(XMLSecurityProperties securityProperties) throws XMLSecurityException {
        super(securityProperties);
    }
    
    @Override
    protected AbstractDecryptedEventReaderInputProcessor newDecryptedEventReaderInputProcessor(
            boolean encryptedHeader, XMLSecStartElement xmlSecStartElement, EncryptedDataType currentEncryptedDataType,
            InboundSecurityToken inboundSecurityToken, InboundSecurityContext inboundSecurityContext) throws XMLSecurityException {
        return new DecryptedEventReaderInputProcessor(getSecurityProperties(),
                SecurePart.Modifier.getModifier(currentEncryptedDataType.getType()),
                 encryptedHeader, xmlSecStartElement, currentEncryptedDataType, this, inboundSecurityToken);
    }

    @Override
    protected void handleSecurityToken(
            InboundSecurityToken inboundSecurityToken, InboundSecurityContext inboundSecurityContext, EncryptedDataType encryptedDataType
    ) throws XMLSecurityException {
        inboundSecurityToken.addTokenUsage(SecurityTokenConstants.TokenUsage_Encryption);

        TokenSecurityEvent tokenSecurityEvent = XMLSecurityUtils.createTokenSecurityEvent(inboundSecurityToken, encryptedDataType.getId());
        inboundSecurityContext.registerSecurityEvent(tokenSecurityEvent);
    }

    @Override
    protected void handleEncryptedContent(InputProcessorChain inputProcessorChain,
                                          XMLSecStartElement parentXMLSecStartElement,
                                          InboundSecurityToken inboundSecurityToken,
                                          EncryptedDataType encryptedDataType)
            throws XMLSecurityException {

        final DocumentContext documentContext = inputProcessorChain.getDocumentContext();
        List elementPath = parentXMLSecStartElement.getElementPath();

        ContentEncryptedElementSecurityEvent contentEncryptedElementSecurityEvent =
                new ContentEncryptedElementSecurityEvent(inboundSecurityToken, true, documentContext.getProtectionOrder());
        contentEncryptedElementSecurityEvent.setElementPath(elementPath);
        contentEncryptedElementSecurityEvent.setXmlSecEvent(parentXMLSecStartElement);
        contentEncryptedElementSecurityEvent.setSecurityToken(inboundSecurityToken);
        contentEncryptedElementSecurityEvent.setCorrelationID(encryptedDataType.getId());
        inputProcessorChain.getSecurityContext().registerSecurityEvent(contentEncryptedElementSecurityEvent);
    }

    @Override
    protected void handleCipherReference(InputProcessorChain inputProcessorChain, EncryptedDataType encryptedDataType,
                                         Cipher cipher, InboundSecurityToken inboundSecurityToken) throws XMLSecurityException {
        throw new XMLSecurityException("errorMessages.NotYetImplementedException");
    }

    /**
     * The DecryptedEventReaderInputProcessor reads the decrypted stream with a StAX reader and
     * forwards the generated XMLEvents
     */
    public class DecryptedEventReaderInputProcessor extends AbstractDecryptedEventReaderInputProcessor {

        public DecryptedEventReaderInputProcessor(
                XMLSecurityProperties securityProperties, SecurePart.Modifier encryptionModifier,
                boolean encryptedHeader, XMLSecStartElement xmlSecStartElement,
                EncryptedDataType encryptedDataType,
                XMLDecryptInputProcessor decryptInputProcessor,
                InboundSecurityToken inboundSecurityToken
        ) {
            super(
                    securityProperties, encryptionModifier, encryptedHeader, xmlSecStartElement,
                    encryptedDataType, decryptInputProcessor, inboundSecurityToken);
        }

        @Override
        protected void handleEncryptedElement(InputProcessorChain inputProcessorChain,
                                              XMLSecStartElement xmlSecStartElement,
                                              InboundSecurityToken inboundSecurityToken,
                                              EncryptedDataType encryptedDataType) throws XMLSecurityException {
            //fire a SecurityEvent:
            final DocumentContext documentContext = inputProcessorChain.getDocumentContext();
            List elementPath = xmlSecStartElement.getElementPath();
            
            EncryptedElementSecurityEvent encryptedElementSecurityEvent =
                    new EncryptedElementSecurityEvent(inboundSecurityToken, true, documentContext.getProtectionOrder());
            encryptedElementSecurityEvent.setElementPath(elementPath);
            encryptedElementSecurityEvent.setXmlSecEvent(xmlSecStartElement);
            encryptedElementSecurityEvent.setSecurityToken(inboundSecurityToken);
            encryptedElementSecurityEvent.setCorrelationID(encryptedDataType.getId());
            inputProcessorChain.getSecurityContext().registerSecurityEvent(encryptedElementSecurityEvent);
        }

    }
}