| /** |
| * 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.swssf.policy; |
| |
| import org.apache.ws.secpolicy.WSSPolicyException; |
| import org.swssf.wss.ext.WSSConstants; |
| import org.swssf.wss.ext.WSSSecurityProperties; |
| import org.swssf.wss.ext.WSSUtils; |
| import org.swssf.wss.ext.WSSecurityException; |
| import org.swssf.wss.impl.processor.input.SecurityHeaderInputProcessor; |
| import org.swssf.wss.securityEvent.EncryptedPartSecurityEvent; |
| import org.swssf.wss.securityEvent.RequiredElementSecurityEvent; |
| import org.swssf.wss.securityEvent.RequiredPartSecurityEvent; |
| import org.swssf.wss.securityEvent.SignedPartSecurityEvent; |
| import org.apache.xml.security.stax.ext.*; |
| import org.apache.xml.security.stax.ext.stax.XMLSecEndElement; |
| import org.apache.xml.security.stax.ext.stax.XMLSecEvent; |
| import org.apache.xml.security.stax.ext.stax.XMLSecStartElement; |
| import org.apache.xml.security.stax.securityEvent.ContentEncryptedElementSecurityEvent; |
| import org.apache.xml.security.stax.securityEvent.EncryptedElementSecurityEvent; |
| import org.apache.xml.security.stax.securityEvent.SignedElementSecurityEvent; |
| |
| import javax.xml.namespace.QName; |
| import javax.xml.stream.XMLStreamConstants; |
| import javax.xml.stream.XMLStreamException; |
| import java.util.List; |
| |
| /** |
| * Processor to generate SecurityEvents regarding not secured elements |
| * |
| * @author $Author$ |
| * @version $Revision$ $Date$ |
| */ |
| public class PolicyInputProcessor extends AbstractInputProcessor { |
| |
| private final PolicyEnforcer policyEnforcer; |
| |
| public PolicyInputProcessor(PolicyEnforcer policyEnforcer, XMLSecurityProperties securityProperties) { |
| super(securityProperties); |
| this.setPhase(WSSConstants.Phase.POSTPROCESSING); |
| this.addBeforeProcessor(SecurityHeaderInputProcessor.class.getName()); |
| this.policyEnforcer = policyEnforcer; |
| } |
| |
| @Override |
| public XMLSecEvent processNextHeaderEvent(InputProcessorChain inputProcessorChain) throws XMLStreamException, XMLSecurityException { |
| XMLSecEvent xmlSecEvent = inputProcessorChain.processHeaderEvent(); |
| //test if non encrypted element have to be encrypted per policy |
| boolean transportSecurityActive = Boolean.TRUE == inputProcessorChain.getSecurityContext().get(WSSConstants.TRANSPORT_SECURITY_ACTIVE); |
| //if transport security is active, every element is encrypted/signed |
| //WSP1.3, 4.2.1 EncryptedParts Assertion |
| List<QName> elementPath = null; |
| if (!transportSecurityActive) { |
| elementPath = xmlSecEvent.getElementPath(); |
| if (!inputProcessorChain.getDocumentContext().isInEncryptedContent() |
| && WSSUtils.isInSecurityHeader(xmlSecEvent, elementPath, |
| ((WSSSecurityProperties) getSecurityProperties()).getActor())) { |
| testEncryptionPolicy(xmlSecEvent, elementPath); |
| } |
| } |
| if (xmlSecEvent.getEventType() == XMLStreamConstants.START_ELEMENT) { |
| XMLSecStartElement xmlSecStartElement = xmlSecEvent.asStartElement(); |
| if (elementPath == null) { |
| elementPath = xmlSecStartElement.getElementPath(); |
| } |
| final int documentLevel = elementPath.size(); |
| if (documentLevel == 3 && WSSUtils.isInSOAPHeader(elementPath)) { |
| |
| RequiredPartSecurityEvent requiredPartSecurityEvent = new RequiredPartSecurityEvent(); |
| requiredPartSecurityEvent.setElementPath(elementPath); |
| policyEnforcer.registerSecurityEvent(requiredPartSecurityEvent); |
| RequiredElementSecurityEvent requiredElementSecurityEvent = new RequiredElementSecurityEvent(); |
| requiredElementSecurityEvent.setElementPath(elementPath); |
| policyEnforcer.registerSecurityEvent(requiredElementSecurityEvent); |
| } else if (documentLevel > 3) { |
| //test for required elements |
| RequiredElementSecurityEvent requiredElementSecurityEvent = new RequiredElementSecurityEvent(); |
| requiredElementSecurityEvent.setElementPath(elementPath); |
| policyEnforcer.registerSecurityEvent(requiredElementSecurityEvent); |
| } |
| } |
| return xmlSecEvent; |
| } |
| |
| @Override |
| public XMLSecEvent processNextEvent(InputProcessorChain inputProcessorChain) throws XMLStreamException, XMLSecurityException { |
| XMLSecEvent xmlSecEvent = inputProcessorChain.processEvent(); |
| |
| List<QName> elementPath = null; |
| switch (xmlSecEvent.getEventType()) { |
| case XMLStreamConstants.START_ELEMENT: |
| XMLSecStartElement xmlSecStartElement = xmlSecEvent.asStartElement(); |
| int documentLevel = xmlSecStartElement.getDocumentLevel(); |
| //test for required elements |
| if (documentLevel > 3) { |
| RequiredElementSecurityEvent requiredElementSecurityEvent = new RequiredElementSecurityEvent(); |
| elementPath = xmlSecStartElement.getElementPath(); |
| requiredElementSecurityEvent.setElementPath(elementPath); |
| policyEnforcer.registerSecurityEvent(requiredElementSecurityEvent); |
| } |
| break; |
| case XMLStreamConstants.END_ELEMENT: |
| XMLSecEndElement xmlSecEndElement = xmlSecEvent.asEndElement(); |
| //ns mismatch should be detected by the xml parser so a local-name equality check should be enough |
| if (xmlSecEndElement.getDocumentLevel() == 1 |
| && xmlSecEvent.asEndElement().getName().getLocalPart().equals(WSSConstants.TAG_soap_Envelope_LocalName)) { |
| try { |
| policyEnforcer.doFinal(); |
| } catch (WSSPolicyException e) { |
| throw new WSSecurityException(WSSecurityException.ErrorCode.INVALID_SECURITY, e); |
| } |
| } |
| break; |
| } |
| |
| boolean transportSecurityActive = Boolean.TRUE == inputProcessorChain.getSecurityContext().get(WSSConstants.TRANSPORT_SECURITY_ACTIVE); |
| //if transport security is active, every element is encrypted/signed |
| //WSP1.3, 4.2.1 EncryptedParts Assertion |
| //test if non encrypted element have to be encrypted per policy |
| if (!transportSecurityActive) { |
| final DocumentContext documentContext = inputProcessorChain.getDocumentContext(); |
| final boolean inEncryptedContent = documentContext.isInEncryptedContent(); |
| final boolean inSignedContent = documentContext.isInSignedContent(); |
| if (!inEncryptedContent || !inSignedContent) { |
| if (elementPath == null) { |
| elementPath = xmlSecEvent.getElementPath(); |
| } |
| if (!inEncryptedContent |
| && !WSSUtils.isInSecurityHeader(xmlSecEvent, elementPath, |
| ((WSSSecurityProperties) getSecurityProperties()).getActor())) { |
| testEncryptionPolicy(xmlSecEvent, elementPath); |
| } |
| |
| //WSP1.3, 4.1.1 SignedParts Assertion |
| //test if non signed element have to be signed per policy |
| if (!inSignedContent) { |
| testSignaturePolicy(xmlSecEvent, elementPath); |
| } |
| } |
| } |
| return xmlSecEvent; |
| } |
| |
| private void testSignaturePolicy(XMLSecEvent xmlSecEvent, List<QName> elementPath) throws WSSecurityException { |
| if (xmlSecEvent.getEventType() == XMLStreamConstants.START_ELEMENT) { |
| final int documentLevel = elementPath.size(); |
| if (documentLevel == 3 && WSSUtils.isInSOAPHeader(elementPath)) { |
| SignedPartSecurityEvent signedPartSecurityEvent = new SignedPartSecurityEvent(null, false, null); |
| signedPartSecurityEvent.setElementPath(elementPath); |
| policyEnforcer.registerSecurityEvent(signedPartSecurityEvent); |
| } else if (documentLevel == 2 && WSSUtils.isInSOAPBody(elementPath)) { |
| SignedPartSecurityEvent signedPartSecurityEvent = new SignedPartSecurityEvent(null, false, null); |
| signedPartSecurityEvent.setElementPath(elementPath); |
| policyEnforcer.registerSecurityEvent(signedPartSecurityEvent); |
| } else if (documentLevel > 3) { |
| SignedElementSecurityEvent signedElementSecurityEvent = new SignedElementSecurityEvent(null, false, null); |
| signedElementSecurityEvent.setElementPath(elementPath); |
| policyEnforcer.registerSecurityEvent(signedElementSecurityEvent); |
| } |
| } |
| } |
| |
| private void testEncryptionPolicy(XMLSecEvent xmlSecEvent, List<QName> elementPath) throws WSSecurityException { |
| //the following events are only interesting for policy verification. So call directly the policyEnforcer for these |
| switch (xmlSecEvent.getEventType()) { |
| case XMLStreamConstants.START_ELEMENT: |
| final int documentLevel = elementPath.size(); |
| if (documentLevel == 3 && WSSUtils.isInSOAPHeader(elementPath)) { |
| |
| EncryptedPartSecurityEvent encryptedPartSecurityEvent |
| = new EncryptedPartSecurityEvent(null, false, null); |
| encryptedPartSecurityEvent.setElementPath(elementPath); |
| policyEnforcer.registerSecurityEvent(encryptedPartSecurityEvent); |
| } else if (documentLevel == 3 && WSSUtils.isInSOAPBody(elementPath)) { |
| |
| EncryptedPartSecurityEvent encryptedPartSecurityEvent |
| = new EncryptedPartSecurityEvent(null, false, null); |
| encryptedPartSecurityEvent.setElementPath(elementPath); |
| policyEnforcer.registerSecurityEvent(encryptedPartSecurityEvent); |
| } else if (documentLevel > 3) { |
| |
| EncryptedElementSecurityEvent encryptedElementSecurityEvent |
| = new EncryptedElementSecurityEvent(null, false, null); |
| encryptedElementSecurityEvent.setElementPath(elementPath); |
| policyEnforcer.registerSecurityEvent(encryptedElementSecurityEvent); |
| |
| //... or it could be a contentEncryption too... |
| ContentEncryptedElementSecurityEvent contentEncryptedElementSecurityEvent |
| = new ContentEncryptedElementSecurityEvent(null, false, null); |
| contentEncryptedElementSecurityEvent.setElementPath(xmlSecEvent.getParentXMLSecStartElement().getElementPath()); |
| policyEnforcer.registerSecurityEvent(contentEncryptedElementSecurityEvent); |
| } |
| break; |
| case XMLStreamConstants.CHARACTERS: |
| case XMLStreamConstants.ENTITY_REFERENCE: |
| case XMLStreamConstants.PROCESSING_INSTRUCTION: |
| //can only be a content encryption |
| ContentEncryptedElementSecurityEvent contentEncryptedElementSecurityEvent |
| = new ContentEncryptedElementSecurityEvent(null, false, null); |
| contentEncryptedElementSecurityEvent.setElementPath(xmlSecEvent.getElementPath()); |
| policyEnforcer.registerSecurityEvent(contentEncryptedElementSecurityEvent); |
| break; |
| } |
| } |
| } |
