Java Code Examples for org.bouncycastle.asn1.x509.DistributionPoint#getDistributionPoint()

/**
 * 
 * @return A list of ulrs that inform the location of the certificate revocation lists
 * @throws IOException exception
 */
public List<String> getCRLDistributionPoint() throws IOException {

    List<String> crlUrls = new ArrayList<>();
    ASN1Primitive primitive = getExtensionValue(Extension.cRLDistributionPoints.getId());
    if (primitive == null) {
        return null;
    }
    CRLDistPoint crlDistPoint = CRLDistPoint.getInstance(primitive);
    DistributionPoint[] distributionPoints = crlDistPoint.getDistributionPoints();

    for (DistributionPoint distributionPoint : distributionPoints) {
        DistributionPointName dpn = distributionPoint.getDistributionPoint();
        // Look for URIs in fullName
        if (dpn != null) {
            if (dpn.getType() == DistributionPointName.FULL_NAME) {
                GeneralName[] genNames = GeneralNames.getInstance(dpn.getName()).getNames();
                for (GeneralName genName : genNames) {
                    if (genName.getTagNo() == GeneralName.uniformResourceIdentifier) {
                        String url = DERIA5String.getInstance(genName.getName()).getString();
                        crlUrls.add(url);
                        logger.info("Adicionando a url {}", url);
                    }
                }
            }
        }
    }
    return crlUrls;
}
 

/**
 * Gives back the {@code List} of CRL URI meta-data found within the given X509 certificate.
 *
 * @param certificateToken
 *            the cert token certificate
 * @return the {@code List} of CRL URI, or empty list if the extension is not present
 */
public static List<String> getCrlUrls(final CertificateToken certificateToken) {
	final List<String> urls = new ArrayList<>();

	final byte[] crlDistributionPointsBytes = certificateToken.getCertificate().getExtensionValue(Extension.cRLDistributionPoints.getId());
	if (crlDistributionPointsBytes != null) {
		try {
			final ASN1Sequence asn1Sequence = DSSASN1Utils.getAsn1SequenceFromDerOctetString(crlDistributionPointsBytes);
			final CRLDistPoint distPoint = CRLDistPoint.getInstance(asn1Sequence);
			final DistributionPoint[] distributionPoints = distPoint.getDistributionPoints();
			for (final DistributionPoint distributionPoint : distributionPoints) {

				final DistributionPointName distributionPointName = distributionPoint.getDistributionPoint();
				if (DistributionPointName.FULL_NAME != distributionPointName.getType()) {
					continue;
				}
				final GeneralNames generalNames = (GeneralNames) distributionPointName.getName();
				final GeneralName[] names = generalNames.getNames();
				for (final GeneralName name : names) {
					String location = parseGn(name);
					if (location != null) {
						urls.add(location);
					}
				}
			}
		} catch (Exception e) {
			LOG.error("Unable to parse cRLDistributionPoints", e);
		}
	}

	return urls;
}
 

public String getCrlUri(X509Certificate certificate) throws IOException {
	ASN1Primitive obj;
	try {
		obj = getExtensionValue(certificate, Extension.cRLDistributionPoints.getId());
	} catch (IOException ex) {
		log.error("Failed to get CRL URL", ex);
		return null;
	}

	if (obj == null) {
		return null;
	}

	CRLDistPoint distPoint = CRLDistPoint.getInstance(obj);

	DistributionPoint[] distributionPoints = distPoint.getDistributionPoints();
	for (DistributionPoint distributionPoint : distributionPoints) {
		DistributionPointName distributionPointName = distributionPoint.getDistributionPoint();
		if (DistributionPointName.FULL_NAME != distributionPointName.getType()) {
			continue;
		}

		GeneralNames generalNames = (GeneralNames) distributionPointName.getName();
		GeneralName[] names = generalNames.getNames();
		for (GeneralName name : names) {
			if (name.getTagNo() != GeneralName.uniformResourceIdentifier) {
				continue;
			}

			DERIA5String derStr = DERIA5String.getInstance((ASN1TaggedObject) name.toASN1Primitive(), false);
			return derStr.getString();
		}
	}

	return null;
}
 

public Collection<X509CRL> loadCRL(X509Certificate[] chain) throws IOException, InvalidAlgorithmParameterException,
        NoSuchAlgorithmException, CertStoreException, CRLException, CertificateException {

    // for each certificate in chain
    for (X509Certificate cert : chain) {
        if (cert.getExtensionValue(Extension.cRLDistributionPoints.getId()) != null) {
            ASN1Primitive primitive = JcaX509ExtensionUtils
                    .parseExtensionValue(cert.getExtensionValue(Extension.cRLDistributionPoints.getId()));
            // extract distribution point extension
            CRLDistPoint distPoint = CRLDistPoint.getInstance(primitive);
            DistributionPoint[] dp = distPoint.getDistributionPoints();
            // each distribution point extension can hold number of distribution points
            for (DistributionPoint d : dp) {
                DistributionPointName dpName = d.getDistributionPoint();
                // Look for URIs in fullName
                if (dpName != null && dpName.getType() == DistributionPointName.FULL_NAME) {
                    GeneralName[] genNames = GeneralNames.getInstance(dpName.getName()).getNames();
                    // Look for an URI
                    for (GeneralName genName : genNames) {
                        // extract url
                        URL url = new URL(genName.getName().toString());
                        try {
                            // download from Internet to the collection
                            crlCollection.add(downloadCRL(url));
                        } catch (CertificateException | CRLException e) {
                            throw new CRLException("Couldn't download CRL");
                        }
                    }
                }
            }
        } else {
            Log.warning("Certificate " + cert.getSubjectX500Principal().getName().toString() + " have no CRLs");
        }
        // parameters for cert store is collection type, using collection with crl create parameters
        CollectionCertStoreParameters params = new CollectionCertStoreParameters(crlCollection);
        // this parameters are next used for creation of certificate store with crls
        crlStore = CertStore.getInstance("Collection", params);
    }
    return crlCollection;
}
 

/**
 * Get extension value for CRL Distribution Points as a string.
 *
 * @param bValue The octet string value
 * @return Extension value as a string
 * @throws IOException If an I/O problem occurs
 */
private String getCrlDistributionPointsStringValue(byte[] bValue)
    throws IOException
{
	CRLDistPoint dps = CRLDistPoint.getInstance(bValue);
	DistributionPoint[] points = dps.getDistributionPoints();

	StringBuilder sb = new StringBuilder();
	sb.append("<ul>");

	for (DistributionPoint point : points)
	{
		DistributionPointName dpn;
		if ((dpn = point.getDistributionPoint()) != null)
		{
			sb.append("<li>");
			switch (dpn.getType())
			{
				case DistributionPointName.FULL_NAME:
					sb.append(RB.getString("CrlDistributionPoint.0.0"));
					sb.append(": ");
					sb.append(getGeneralNamesString((GeneralNames) dpn.getName(), LinkClass.CRL));
					break;
				case DistributionPointName.NAME_RELATIVE_TO_CRL_ISSUER:
					sb.append(RB.getString("CrlDistributionPoint.0.1"));
					sb.append(": ");
					// TODO: need better decode?
					sb.append(stringify(dpn.getName()));
					break;
				default:
					sb.append(RB.getString("UnknownCrlDistributionPointName"));
					sb.append(": ");
					sb.append(stringify(dpn.getName()));
					break;
			}
			sb.append("</li>");
		}

		ReasonFlags flags;
		if ((flags = point.getReasons()) != null)
		{
			sb.append("<li>");
			sb.append(RB.getString("CrlDistributionPoint.1"));
			sb.append(": ");
			// TODO: decode
			sb.append(stringify(flags));
			sb.append("</li>");
		}

		GeneralNames issuer;
		if ((issuer = point.getCRLIssuer()) != null)
		{
			sb.append("<li>");
			sb.append(RB.getString("CrlDistributionPoint.2"));
			sb.append(": ");
			sb.append(getGeneralNamesString(issuer, LinkClass.CRL));
			sb.append("</li>");
		}
	}

	sb.append("</ul>");
	return sb.toString();
}
 

private String getDistributionPointString(DistributionPoint distributionPoint, String baseIndent)
		throws IOException {
	// @formatter:off

	/*
	 * DistributionPoint ::= ASN1Sequence {
	 * 		distributionPoint [0] DistributionPointName OPTIONAL,
	 * 		reasons [1] ReasonFlags OPTIONAL,
	 * 		cRLIssuer [2] GeneralNames OPTIONAL
	 * }
	 *
	 * GeneralNames ::= ASN1Sequence SIZE (1..MAX) OF GeneralName
	 */

	// @formatter:on

	StringBuilder sb = new StringBuilder();

	DistributionPointName distributionPointName = distributionPoint.getDistributionPoint();
	ReasonFlags reasons = distributionPoint.getReasons();
	GeneralNames crlIssuer = distributionPoint.getCRLIssuer();

	if (distributionPointName != null) { // Optional
		sb.append(getDistributionPointNameString(distributionPointName, baseIndent));
	}

	if (reasons != null) { // Optional
		sb.append(baseIndent);
		sb.append(res.getString("DistributionPointReasons"));
		sb.append(NEWLINE);

		String[] reasonFlags = getReasonFlagsStrings(reasons);

		for (String reasonFlag : reasonFlags) {
			sb.append(baseIndent);
			sb.append(INDENT);
			sb.append(reasonFlag);
			sb.append(NEWLINE);
		}
	}

	if (crlIssuer != null) { // Optional
		sb.append(baseIndent);
		sb.append(res.getString("DistributionPointCrlIssuer"));
		sb.append(NEWLINE);

		for (GeneralName generalName : crlIssuer.getNames()) {
			sb.append(baseIndent);
			sb.append(INDENT);
			sb.append(GeneralNameUtil.toString(generalName));
			sb.append(NEWLINE);
		}
	}

	return sb.toString();
}