| /** |
| * 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.message; |
| |
| import javax.security.auth.callback.Callback; |
| import javax.security.auth.callback.CallbackHandler; |
| import javax.security.auth.callback.UnsupportedCallbackException; |
| |
| import org.apache.wss4j.common.ext.Attachment; |
| import org.apache.wss4j.common.ext.AttachmentRequestCallback; |
| import org.apache.wss4j.common.ext.AttachmentResultCallback; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * A Callback Handler implementation for the case of signing/encrypting Attachments via the SwA |
| * (SOAP with Attachments) specification or when using xop:Include in the case of MTOM. |
| */ |
| public class AttachmentCallbackHandler implements CallbackHandler { |
| |
| private final List<Attachment> originalRequestAttachments; |
| private Map<String, Attachment> attachmentMap = new HashMap<>(); |
| private List<Attachment> responseAttachments = new ArrayList<>(); |
| |
| public AttachmentCallbackHandler() { |
| originalRequestAttachments = Collections.emptyList(); |
| } |
| |
| public AttachmentCallbackHandler(List<Attachment> attachments) { |
| originalRequestAttachments = attachments; |
| if (attachments != null) { |
| for (Attachment attachment : attachments) { |
| attachmentMap.put(attachment.getId(), attachment); |
| } |
| } |
| } |
| |
| public void handle(Callback[] callbacks) |
| throws IOException, UnsupportedCallbackException { |
| for (int i = 0; i < callbacks.length; i++) { |
| if (callbacks[i] instanceof AttachmentRequestCallback) { |
| AttachmentRequestCallback attachmentRequestCallback = |
| (AttachmentRequestCallback) callbacks[i]; |
| |
| List<Attachment> attachments = |
| getAttachmentsToAdd(attachmentRequestCallback.getAttachmentId()); |
| if (attachments.isEmpty()) { |
| throw new RuntimeException("wrong attachment requested"); |
| } |
| |
| attachmentRequestCallback.setAttachments(attachments); |
| } else if (callbacks[i] instanceof AttachmentResultCallback) { |
| AttachmentResultCallback attachmentResultCallback = |
| (AttachmentResultCallback) callbacks[i]; |
| responseAttachments.add(attachmentResultCallback.getAttachment()); |
| attachmentMap.put(attachmentResultCallback.getAttachment().getId(), |
| attachmentResultCallback.getAttachment()); |
| } else { |
| throw new UnsupportedCallbackException(callbacks[i], "Unrecognized Callback"); |
| } |
| } |
| } |
| |
| public List<Attachment> getResponseAttachments() { |
| return responseAttachments; |
| } |
| |
| // Try to match the Attachment Id. Otherwise, add all Attachments. |
| private List<Attachment> getAttachmentsToAdd(String id) { |
| List<Attachment> attachments = new ArrayList<>(); |
| if (attachmentMap.containsKey(id)) { |
| attachments.add(attachmentMap.get(id)); |
| } else { |
| if (originalRequestAttachments != null) { |
| attachments.addAll(originalRequestAttachments); |
| } |
| } |
| |
| return attachments; |
| } |
| |
| } |