001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.camel.component.cxf.common.header;
018    
019    import java.util.Arrays;
020    import java.util.Iterator;
021    import java.util.List;
022    
023    import org.apache.camel.spi.HeaderFilterStrategy.Direction;
024    import org.apache.cxf.binding.soap.SoapBindingConstants;
025    import org.apache.cxf.binding.soap.SoapBindingFactory;
026    import org.apache.cxf.binding.soap.SoapHeader;
027    import org.apache.cxf.binding.soap.SoapVersion;
028    import org.apache.cxf.binding.soap.SoapVersionFactory;
029    import org.apache.cxf.headers.Header;
030    import org.slf4j.Logger;
031    import org.slf4j.LoggerFactory;
032    
033    /**
034     * A {@link MessageHeaderFilter} to drop all SOAP headers.
035     *
036     * @version 
037     */
038    public class SoapMessageHeaderFilter implements MessageHeaderFilter {
039        private static final Logger LOG = LoggerFactory.getLogger(SoapMessageHeaderFilter.class);
040    
041        private static final List<String> ACTIVATION_NS = 
042            Arrays.asList(SoapBindingConstants.SOAP11_BINDING_ID, 
043                          SoapBindingFactory.SOAP_11_BINDING, 
044                          SoapBindingFactory.SOAP_12_BINDING);
045        
046        public List<String> getActivationNamespaces() {
047            return ACTIVATION_NS;
048        }
049    
050        public void filter(Direction direction, List<Header> headers) {
051            // Treat both in and out direction the same
052            if (headers == null) {
053                return;
054            }
055            
056            Iterator<Header> iterator = headers.iterator();
057            while (iterator.hasNext()) {
058                Header header = iterator.next();
059                LOG.trace("Processing header: {}", header);
060                
061                if (!(header instanceof SoapHeader)) {
062                    LOG.trace("Skipped header: {} since it is not a SoapHeader", header);
063                    continue;
064                }
065                
066                SoapHeader soapHeader = SoapHeader.class.cast(header);
067                for (Iterator<SoapVersion> itv = SoapVersionFactory.getInstance().getVersions(); itv.hasNext();) {
068                    SoapVersion version = itv.next();
069    
070                    if (soapHeader.getActor() != null 
071                        && soapHeader.getActor().equals(version.getNextRole())) {
072                        // dropping headers if actor/role equals to {ns}/role|actor/next
073                        // cxf SoapHeader needs to have soap:header@relay attribute, 
074                        // then we can check for it here as well
075                        LOG.trace("Filtered header: {}", header);
076                        iterator.remove();
077                        break;
078                    }
079                }
080            }
081        }
082    
083    }