/**
    * 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.stax.impl.transformer;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  
  import javax.xml.stream.XMLStreamException;
  
  import org.apache.wss4j.common.util.AttachmentUtils;
  import org.apache.xml.security.stax.impl.util.MultiInputStream;
  
  public class AttachmentCompleteSignatureTransform extends AttachmentContentSignatureTransform {
  
      @Override
      public void transform(InputStream inputStream) throws XMLStreamException {
          InputStream is = inputStream;
          try {
              OutputStream outputStream = getOutputStream();  //NOPMD
              if (outputStream == null) {
                  outputStream = new ByteArrayOutputStream();
                  is = new MultiInputStream(//NOPMD
                          new ByteArrayInputStream(
                                  ((ByteArrayOutputStream) outputStream).toByteArray()),
                          inputStream
                  );
              }
              AttachmentUtils.canonizeMimeHeaders(outputStream, getAttachment().getHeaders());
          } catch (IOException e) {
              throw new XMLStreamException(e);
          }
          super.transform(is);
      }
  }