| /** |
| * 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.wss4j.dom.processor; |
| |
| import java.util.Collections; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import javax.xml.namespace.QName; |
| |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| import org.apache.wss4j.common.ext.WSSecurityException; |
| import org.apache.wss4j.common.util.XMLUtils; |
| import org.apache.wss4j.dom.WSConstants; |
| import org.apache.wss4j.dom.WSDataRef; |
| import org.apache.wss4j.dom.engine.WSSecurityEngineResult; |
| import org.apache.wss4j.dom.handler.RequestData; |
| |
| /** |
| * This will process incoming <code>saml2:EncryptedAssertion</code> elements. |
| */ |
| public class EncryptedAssertionProcessor implements Processor { |
| |
| private static final org.slf4j.Logger LOG = |
| org.slf4j.LoggerFactory.getLogger(EncryptedAssertionProcessor.class); |
| |
| public List<WSSecurityEngineResult> handleToken( |
| Element elem, |
| RequestData request |
| ) throws WSSecurityException { |
| LOG.debug("Found EncryptedAssertion element"); |
| |
| Element encryptedDataElement = |
| XMLUtils.getDirectChildElement(elem, WSConstants.ENC_DATA_LN, WSConstants.ENC_NS); |
| if (encryptedDataElement == null) { |
| // Maybe it has already been decrypted... |
| return Collections.emptyList(); |
| } |
| |
| List<WSSecurityEngineResult> completeResults = new LinkedList<>(); |
| |
| // Check all EncryptedKey elements |
| for (Node currentChild = elem.getFirstChild(); |
| currentChild != null; |
| currentChild = currentChild.getNextSibling() |
| ) { |
| if (Node.ELEMENT_NODE == currentChild.getNodeType() |
| && "EncryptedKey".equals(currentChild.getLocalName()) |
| && WSConstants.ENC_NS.equals(currentChild.getNamespaceURI())) { |
| QName el = |
| new QName(((Element)currentChild).getNamespaceURI(), |
| ((Element)currentChild).getLocalName()); |
| Processor proc = request.getWssConfig().getProcessor(el); |
| if (proc != null) { |
| completeResults.addAll(proc.handleToken((Element)currentChild, request)); |
| } |
| } |
| } |
| |
| // If we have processed EncryptedKey elements, then the Assertion is already decrypted |
| // at this point. Process it accordingly. |
| if (!completeResults.isEmpty()) { |
| for (WSSecurityEngineResult r : completeResults) { |
| @SuppressWarnings("unchecked") |
| List<WSDataRef> dataRefs = |
| (List<WSDataRef>)r.get(WSSecurityEngineResult.TAG_DATA_REF_URIS); |
| if (dataRefs != null) { |
| for (WSDataRef dataRef : dataRefs) { |
| if (WSConstants.SAML_TOKEN.equals(dataRef.getName()) |
| || WSConstants.SAML2_TOKEN.equals(dataRef.getName())) { |
| // Get hold of the plain text element |
| Element decryptedElem = dataRef.getProtectedElement(); |
| QName el = new QName(decryptedElem.getNamespaceURI(), decryptedElem.getLocalName()); |
| Processor proc = request.getWssConfig().getProcessor(el); |
| if (proc != null) { |
| LOG.debug("Processing decrypted element with: {}", proc.getClass().getName()); |
| List<WSSecurityEngineResult> results = proc.handleToken(decryptedElem, request); |
| completeResults.addAll(0, results); |
| return completeResults; |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| // Otherwise decrypt the element ourselves |
| |
| // Type must be "Element" if specified |
| String typeStr = encryptedDataElement.getAttributeNS(null, "Type"); |
| if (typeStr != null && !(WSConstants.ENC_NS + "Element").equals(typeStr)) { |
| throw new WSSecurityException( |
| WSSecurityException.ErrorCode.INVALID_SECURITY, "badElement", |
| new Object[] {"Element", typeStr} |
| ); |
| } |
| |
| // Now hand it off to another processor (EncryptedDataProcessor) |
| QName el = |
| new QName(encryptedDataElement.getNamespaceURI(), encryptedDataElement.getLocalName()); |
| Processor proc = request.getWssConfig().getProcessor(el); |
| if (proc != null) { |
| LOG.debug("Processing decrypted element with: {}", proc.getClass().getName()); |
| return proc.handleToken(encryptedDataElement, request); |
| } |
| |
| return Collections.emptyList(); |
| } |
| |
| } |