eu.europa.esig.dss.asic.cades.validation.scope.ASiCWithCAdESSignatureScopeFinder Maven / Gradle / Ivy

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/**
 * DSS - Digital Signature Services
 * Copyright (C) 2015 European Commission, provided under the CEF programme
 * 
 * This file is part of the "DSS - Digital Signature Services" project.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
package eu.europa.esig.dss.asic.cades.validation.scope;

import eu.europa.esig.dss.asic.common.ASiCUtils;
import eu.europa.esig.dss.cades.validation.CAdESSignature;
import eu.europa.esig.dss.cades.validation.scope.CAdESSignatureScopeFinder;
import eu.europa.esig.dss.model.DSSDocument;
import eu.europa.esig.dss.model.Digest;
import eu.europa.esig.dss.spi.DSSUtils;
import eu.europa.esig.dss.utils.Utils;
import eu.europa.esig.dss.validation.AdvancedSignature;
import eu.europa.esig.dss.validation.ManifestEntry;
import eu.europa.esig.dss.validation.ManifestFile;
import eu.europa.esig.dss.validation.scope.ContainerContentSignatureScope;
import eu.europa.esig.dss.validation.scope.ContainerSignatureScope;
import eu.europa.esig.dss.validation.scope.FullSignatureScope;
import eu.europa.esig.dss.validation.scope.ManifestSignatureScope;
import eu.europa.esig.dss.validation.scope.SignatureScope;

import java.util.ArrayList;
import java.util.List;

/**
 * Finds a list of {@code SignatureScope}s for an ASiC with CAdES container
 */
public class ASiCWithCAdESSignatureScopeFinder extends CAdESSignatureScopeFinder {

	/**
	 * Default constructor
	 */
	public ASiCWithCAdESSignatureScopeFinder() {
		// empty
	}

    @Override
    public List findSignatureScope(final CAdESSignature cadesSignature) {
        List result = new ArrayList<>();
        DSSDocument originalDocument = getOriginalDocument(cadesSignature);
        if (originalDocument == null) {
        	return result;
        }
        
        if (isASiCSArchive(cadesSignature) && isASiCSContainer(originalDocument)) {
			ContainerSignatureScope containerSignatureScope = new ContainerSignatureScope(
					originalDocument.getName(), DSSUtils.getDigest(getDefaultDigestAlgorithm(), originalDocument));
			result.add(containerSignatureScope);
			for (DSSDocument archivedDocument : cadesSignature.getContainerContents()) {
				containerSignatureScope.addChildSignatureScope(new ContainerContentSignatureScope(DSSUtils.decodeURI(archivedDocument.getName()), getDigest(archivedDocument)));
			}
			
        } else if (isASiCEArchive(cadesSignature)) {
			ManifestFile manifestFile = cadesSignature.getManifestFile();
			ManifestSignatureScope manifestSignatureScope = new ManifestSignatureScope(
					manifestFile.getFilename(), new Digest(getDefaultDigestAlgorithm(),
					Utils.fromBase64(manifestFile.getDigestBase64String(getDefaultDigestAlgorithm()))) );
			result.add(manifestSignatureScope);
			
        	for (ManifestEntry manifestEntry : manifestFile.getEntries()) {
        		if (manifestEntry.isIntact()) {
					manifestSignatureScope.addChildSignatureScope(new FullSignatureScope(manifestEntry.getFileName(), manifestEntry.getDigest()));
        		}
        	}
        	
        } else {
        	return getSignatureScopeFromOriginalDocument(cadesSignature, originalDocument);
        }
        return result;
    }

	@Override
	protected boolean isASiCSArchive(AdvancedSignature advancedSignature) {
		return !super.isASiCEArchive(advancedSignature);
	}

	/**
	 * This method verifies whether the given document is an ASiC-S ZIP container
	 *
	 * @param document {@link DSSDocument} to check
	 * @return TRUE of the document is an ASiC-S data container, FALSE otherwise
	 */
	private boolean isASiCSContainer(DSSDocument document) {
		return document.getName() != null && !document.getName().contains("/") && ASiCUtils.isZip(document);
	}

}