com.eucalyptus.ws.handlers.IoWsSecHandler.java Source code

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Here is the source code for com.eucalyptus.ws.handlers.IoWsSecHandler.java

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/*************************************************************************
 * (c) Copyright 2016 Hewlett Packard Enterprise Development Company LP
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 3 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/.
 ************************************************************************/
package com.eucalyptus.ws.handlers;

import java.util.Collection;
import java.util.List;
import java.util.function.Function;
import javax.xml.crypto.dsig.Reference;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMException;
import org.apache.axiom.om.impl.builder.StAXOMBuilder;
import org.apache.axiom.soap.SOAPEnvelope;
import org.apache.axiom.soap.impl.builder.StAXSOAPModelBuilder;
import org.apache.log4j.Logger;
import org.apache.ws.security.WSConstants;
import org.apache.ws.security.WSEncryptionPart;
import org.apache.ws.security.WSSConfig;
import org.apache.ws.security.WSSecurityException;
import org.apache.ws.security.message.WSSecHeader;
import org.apache.ws.security.message.WSSecSignature;
import org.apache.ws.security.message.WSSecTimestamp;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import com.eucalyptus.binding.HoldMe;
import com.eucalyptus.crypto.util.WSSecurity;
import com.eucalyptus.ws.IoMessage;
import com.eucalyptus.ws.util.CredentialProxy;
import com.google.common.collect.Lists;
import io.netty.channel.ChannelDuplexHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPromise;

/**
 *
 */
public abstract class IoWsSecHandler extends ChannelDuplexHandler {

    private static Logger LOG = Logger.getLogger(IoWsSecHandler.class);
    private final Function<ChannelHandlerContext, CredentialProxy> credentialLookup;

    static {
        WSSecurity.init();
    }

    public IoWsSecHandler(final CredentialProxy credentials) {
        this(ctx -> credentials);
    }

    public IoWsSecHandler(final Function<ChannelHandlerContext, CredentialProxy> credentialLookup) {
        this.credentialLookup = credentialLookup;
    }

    @Override
    public void write(final io.netty.channel.ChannelHandlerContext ctx, final Object msg,
            final ChannelPromise promise) throws Exception {
        final Object o = msg;
        if (o instanceof IoMessage) {
            try {
                final IoMessage ioMessage = (IoMessage) o;
                OMElement elem = null;
                Document doc = null;
                SOAPEnvelope env = ioMessage.getSoapEnvelope();
                HoldMe.canHas.lock();
                try {
                    final StAXOMBuilder doomBuilder = HoldMe.getStAXOMBuilder(HoldMe.getDOOMFactory(),
                            env.getXMLStreamReader());
                    elem = doomBuilder.getDocumentElement();
                    elem.build();
                    doc = ((Element) elem).getOwnerDocument();
                } finally {
                    HoldMe.canHas.unlock();
                }

                final List<WSEncryptionPart> partsToSign = Lists.newArrayList();
                final WSSecHeader wsheader = new WSSecHeader("", false);
                try {
                    wsheader.insertSecurityHeader(doc);
                } catch (WSSecurityException e) {
                    LOG.error(e, e);
                    ctx.fireExceptionCaught(e);
                }

                final WSSecSignature signer = new WSSecSignature();
                final WSSConfig config = WSSConfig.getNewInstance();
                config.setWsiBSPCompliant(false);
                signer.setWsConfig(config);
                signer.setKeyIdentifierType(WSConstants.BST_DIRECT_REFERENCE);
                signer.setSigCanonicalization(WSConstants.C14N_EXCL_OMIT_COMMENTS);
                try {
                    signer.prepare(doc, this.credentialLookup.apply(ctx), wsheader);
                } catch (WSSecurityException e) {
                    LOG.error(doc);
                    LOG.error(e, e);
                    ctx.fireExceptionCaught(e);
                }

                if (this.shouldTimeStamp()) {
                    final WSSecTimestamp ts = new WSSecTimestamp();
                    ts.setTimeToLive(300);
                    ts.prepare(doc);
                    ts.prependToHeader(wsheader);
                }
                partsToSign.addAll(this.getSignatureParts());
                signer.appendBSTElementToHeader(wsheader);
                List<Reference> references = null;
                try {
                    references = signer.addReferencesToSign(partsToSign, wsheader);
                } catch (WSSecurityException e) {
                    LOG.error(doc);
                    LOG.error(e, e);
                    ctx.fireExceptionCaught(e);
                }

                try {
                    signer.computeSignature(references, false, null);
                } catch (WSSecurityException e) {
                    LOG.error(doc);
                    LOG.error(e, e);
                    ctx.fireExceptionCaught(e);
                }
                SOAPEnvelope envelope = null;
                HoldMe.canHas.lock();
                try {
                    final StAXSOAPModelBuilder stAXSOAPModelBuilder = new StAXSOAPModelBuilder(
                            elem.getXMLStreamReader(), HoldMe.getOMSOAP11Factory(), null);
                    envelope = stAXSOAPModelBuilder.getSOAPEnvelope();
                    if (envelope != null)
                        envelope.build();
                } finally {
                    HoldMe.canHas.unlock();
                }

                ioMessage.setSoapEnvelope(envelope);
            } catch (OMException e) {
                LOG.error(e, e);
                ctx.fireExceptionCaught(e);
            }
        }
        super.write(ctx, msg, promise);
    }

    public abstract Collection<WSEncryptionPart> getSignatureParts();

    public abstract boolean shouldTimeStamp();
}