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/*
 * SignatureProcessor.java
 *
 * Created on August 10, 2006, 2:56 PM
 *
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the License).  You may not use this file except in
 * compliance with the License.
 *
 * You can obtain a copy of the license at
 * https://glassfish.dev.java.net/public/CDDLv1.0.html.
 * See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL
 * Header Notice in each file and include the License file
 * at https://glassfish.dev.java.net/public/CDDLv1.0.html.
 * If applicable, add the following below the CDDL Header,
 * with the fields enclosed by brackets [] replaced by
 * you own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
 *
 * Copyright 2006 Sun Microsystems Inc. All Rights Reserved
 */

package com.sun.xml.ws.security.opt.impl.dsig;

import com.sun.xml.ws.security.opt.api.keyinfo.BuilderResult;
import com.sun.xml.ws.security.opt.impl.util.NamespaceAndPrefixMapper;
import com.sun.xml.ws.security.opt.impl.util.NamespaceContextEx;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.xml.crypto.dsig.keyinfo.KeyInfo;
import com.sun.xml.ws.security.opt.crypto.jaxb.JAXBSignContext;
import com.sun.xml.wss.impl.policy.mls.SignaturePolicy;
import com.sun.xml.wss.impl.policy.mls.WSSPolicy;
import com.sun.xml.wss.logging.LogDomainConstants;
import com.sun.xml.wss.logging.impl.opt.signature.LogStringsMessages;
import com.sun.xml.wss.XWSSecurityException;
import com.sun.xml.wss.impl.MessageConstants;
import com.sun.xml.wss.impl.misc.Base64;
import com.sun.xml.ws.security.opt.impl.JAXBFilterProcessingContext;
import com.sun.xml.ws.security.opt.impl.outgoing.SecurityHeader;

import javax.xml.crypto.dsig.SignedInfo;
import javax.xml.crypto.dsig.XMLSignature;
import java.security.Key;
import java.util.List;
import java.util.ArrayList;


/**
 *
 * @author [email protected]
 */

public class SignatureProcessor {
    
    private static final Logger logger = Logger.getLogger(LogDomainConstants.IMPL_OPT_SIGNATURE_DOMAIN,
            LogDomainConstants.IMPL_OPT_SIGNATURE_DOMAIN_BUNDLE);
    
    /** Creates a new instance of SignatureProcessor */
    public SignatureProcessor() {
    }
    
    /**
     * 
     * 
     * @param context JAXBFilterProcessingContext
     * @return errorCode
     * @throws XWSSecurityException
     */
    public static int sign(JAXBFilterProcessingContext context) throws XWSSecurityException {
        try{
            SignaturePolicy signaturePolicy  = (SignaturePolicy)context.getSecurityPolicy();
            ((NamespaceContextEx)context.getNamespaceContext()).addSignatureNS();
            WSSPolicy keyBinding = (WSSPolicy)signaturePolicy.getKeyBinding();
            if(logger.isLoggable(Level.FINEST)){
                logger.log(Level.FINEST, "KeyBinding is "+keyBinding);
            }
            
            Key signingKey = null;

            SignatureElementFactory signFactory = new SignatureElementFactory();
            
            KeyInfo keyInfo = null;
            SecurityHeader securityHeader = context.getSecurityHeader();
            
            //Get the Signing key and KeyInfo from TokenProcessor
            TokenProcessor tokenProcessor = new TokenProcessor(signaturePolicy, context);
            BuilderResult builderResult = tokenProcessor.process();
            signingKey = builderResult.getDataProtectionKey();
            keyInfo = builderResult.getKeyInfo();
            
            SignedInfo signedInfo = signFactory.constructSignedInfo(context);
            JAXBSignContext signContext = new JAXBSignContext(signingKey);
            signContext.setURIDereferencer(DSigResolver.getInstance());
            XMLSignature signature = signFactory.constructSignature(signedInfo, keyInfo, signaturePolicy.getUUID());            
            signContext.put(MessageConstants.WSS_PROCESSING_CONTEXT, context);            
            NamespaceAndPrefixMapper npMapper = new NamespaceAndPrefixMapper(context.getNamespaceContext(), context.getDisableIncPrefix());
            signContext.put(NamespaceAndPrefixMapper.NS_PREFIX_MAPPER, npMapper);            
            signContext.putNamespacePrefix(MessageConstants.DSIG_NS, MessageConstants.DSIG_PREFIX);
            signature.sign(signContext);
            
            JAXBSignatureHeaderElement jaxBSign = new JAXBSignatureHeaderElement((com.sun.xml.ws.security.opt.crypto.dsig.Signature)signature,context.getSOAPVersion());
            securityHeader.add(jaxBSign);
            
            //For SignatureConfirmation
            List scList = (ArrayList)context.getExtraneousProperty("SignatureConfirmation");
            if(scList != null){
                scList.add(Base64.encode(signature.getSignatureValue().getValue()));
            } 
            //End SignatureConfirmation specific code
            
        } catch(XWSSecurityException xe){
            logger.log(Level.SEVERE, LogStringsMessages.WSS_1701_SIGN_FAILED(), xe);
            throw xe;
        } catch(Exception ex){
            logger.log(Level.SEVERE, LogStringsMessages.WSS_1701_SIGN_FAILED(), ex);
            throw new XWSSecurityException(ex);
        }        
        return 0;
    }
    
}