From d89f36b67ea1d838a78523538a24e044518f3587 Mon Sep 17 00:00:00 2001 From: mcentner Date: Tue, 26 Jan 2010 16:22:56 +0000 Subject: MOCCA 1.2.11 with SHA-2 enabled. git-svn-id: https://joinup.ec.europa.eu/svn/mocca/branches/mocca-1.2.11-sha2@599 8a26b1a7-26f0-462f-b9ef-d0e30c41f5a4 --- .../egiz/bku/slcommands/impl/xsect/Signature.java | 995 +++++++++++++++++++++ 1 file changed, 995 insertions(+) create mode 100644 mocca-1.2.11/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/Signature.java (limited to 'mocca-1.2.11/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/Signature.java') diff --git a/mocca-1.2.11/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/Signature.java b/mocca-1.2.11/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/Signature.java new file mode 100644 index 00000000..3cebb6a3 --- /dev/null +++ b/mocca-1.2.11/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/impl/xsect/Signature.java @@ -0,0 +1,995 @@ +/* +* Copyright 2008 Federal Chancellery Austria and +* Graz University of Technology +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ +package at.gv.egiz.bku.slcommands.impl.xsect; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.io.StringWriter; +import java.io.UnsupportedEncodingException; +import java.security.InvalidAlgorithmParameterException; +import java.security.NoSuchAlgorithmException; +import java.security.PrivateKey; +import java.security.cert.X509Certificate; +import java.util.ArrayList; +import java.util.Collections; +import java.util.Date; +import java.util.List; + +import javax.xml.bind.JAXBElement; +import javax.xml.bind.JAXBException; +import javax.xml.crypto.MarshalException; +import javax.xml.crypto.dom.DOMStructure; +import javax.xml.crypto.dsig.CanonicalizationMethod; +import javax.xml.crypto.dsig.DigestMethod; +import javax.xml.crypto.dsig.Reference; +import javax.xml.crypto.dsig.SignatureMethod; +import javax.xml.crypto.dsig.SignedInfo; +import javax.xml.crypto.dsig.XMLObject; +import javax.xml.crypto.dsig.XMLSignature; +import javax.xml.crypto.dsig.XMLSignatureException; +import javax.xml.crypto.dsig.XMLSignatureFactory; +import javax.xml.crypto.dsig.dom.DOMSignContext; +import javax.xml.crypto.dsig.keyinfo.KeyInfo; +import javax.xml.crypto.dsig.keyinfo.KeyInfoFactory; +import javax.xml.crypto.dsig.keyinfo.X509Data; +import javax.xml.stream.XMLStreamException; + +import org.apache.commons.logging.Log; +import org.apache.commons.logging.LogFactory; +import org.etsi.uri._01903.v1_1.DataObjectFormatType; +import org.etsi.uri._01903.v1_1.QualifyingPropertiesType; +import org.w3c.dom.DOMConfiguration; +import org.w3c.dom.DOMException; +import org.w3c.dom.Document; +import org.w3c.dom.DocumentFragment; +import org.w3c.dom.Element; +import org.w3c.dom.Node; +import org.w3c.dom.NodeList; +import org.w3c.dom.ls.DOMImplementationLS; +import org.w3c.dom.ls.LSException; +import org.w3c.dom.ls.LSInput; +import org.w3c.dom.ls.LSOutput; +import org.w3c.dom.ls.LSParser; +import org.w3c.dom.ls.LSResourceResolver; +import org.w3c.dom.ls.LSSerializer; + +import at.buergerkarte.namespaces.securitylayer._1.Base64XMLLocRefReqRefContentType; +import at.buergerkarte.namespaces.securitylayer._1.Base64XMLOptRefContentType; +import at.buergerkarte.namespaces.securitylayer._1.DataObjectAssociationType; +import at.buergerkarte.namespaces.securitylayer._1.DataObjectInfoType; +import at.buergerkarte.namespaces.securitylayer._1.SignatureInfoCreationType; +import at.gv.egiz.bku.binding.HttpUtil; +import at.gv.egiz.bku.slexceptions.SLCommandException; +import at.gv.egiz.bku.slexceptions.SLRequestException; +import at.gv.egiz.bku.slexceptions.SLViewerException; +import at.gv.egiz.bku.utils.HexDump; +import at.gv.egiz.bku.utils.urldereferencer.StreamData; +import at.gv.egiz.bku.utils.urldereferencer.URLDereferencer; +import at.gv.egiz.bku.utils.urldereferencer.URLDereferencerContext; +import at.gv.egiz.dom.DOMUtils; +import at.gv.egiz.slbinding.impl.XMLContentType; +import at.gv.egiz.stal.STAL; +import at.gv.egiz.xades.QualifyingPropertiesException; +import at.gv.egiz.xades.QualifyingPropertiesFactory; + +/** + * This class represents an XML-Signature as to be created by the + * security layer command CreateXMLSignatureRequest. + * + * @author mcentner + */ +public class Signature { + public static final String XMLDSIG_PREFIX = "dsig"; + + /** + * Logging facility. + */ + private static Log log = LogFactory.getLog(Signature.class); + + /** + * The DOM implementation used. + */ + private DOMImplementationLS domImplLS; + + /** + * The SignatureContext for the XMLSignature. + */ + private SignatureContext ctx; + + /** + * The list of {@link DataObject}s for this signature. + */ + private List dataObjects = new ArrayList(); + + /** + * A mapping from the Id-attribute values of this signature's + * ds:References to the corresponding {@link DataObject}s. + */ +// private Map dataObjectReferencIds = new HashMap(); + + /** + * The SignatureEnvironment for this signature. + */ + private SignatureLocation signatureLocation; + + /** + * The XML signature. + */ + private XMLSignature xmlSignature; + + /** + * A list of attributes of type xsd:ID to be registered in the {@link DOMSignContext}. + */ + private List idAttributes = new ArrayList(); + + /** + * The signer's X509 certificate. + */ + private X509Certificate signerCertificate; + + /** + * The signing time. + */ + private Date signingTime; + + /** + * Creates a new SLXMLSignature instance. + */ + public Signature(URLDereferencerContext dereferencerContext, + IdValueFactory idValueFactory, + AlgorithmMethodFactory algorithmMethodFactory) { + + domImplLS = DOMUtils.getDOMImplementationLS(); + + ctx = new SignatureContext(); + + ctx.setSignatureFactory(XMLSignatureFactory.getInstance()); + + ctx.setDereferencerContext(dereferencerContext); + ctx.setIdValueFactory(idValueFactory); + ctx.setAlgorithmMethodFactory(algorithmMethodFactory); + + } + + /** + * @return the Document containing this Signature + */ + public Document getDocument() { + return ctx.getDocument(); + } + + /** + * @return the parent Node for this Signature + */ + public Node getParent() { + return (signatureLocation != null) ? signatureLocation.getParent() : null; + } + + /** + * @return the next sibling Node for this Signature + */ + public Node getNextSibling() { + return (signatureLocation != null) ? signatureLocation.getNextSibling() : null; + } + + /** + * @return the XMLSignature + */ + public XMLSignature getXMLSignature() { + return xmlSignature; + } + + /** + * @return the list of {@link Reference}s of this Signature + */ + @SuppressWarnings("unchecked") + public List getReferences() { + return (xmlSignature != null) ? xmlSignature.getSignedInfo().getReferences() : null; + } + + /** + * @return the list of {@link XMLObject}s of this Signature + */ + @SuppressWarnings("unchecked") + public List getXMLObjects() { + return (xmlSignature != null) ? xmlSignature.getObjects() : null; + } + + /** + * Prepares the signature document with the information given by the + * signatureInfo provided. + * + * @param signatureInfo + * the SignatureInfo + * + * @throws SLCommandException + * if processing fails for any reason + * @throws IllegalStateException + * if the parent node has already been set + * @throws NullPointerException + * if signatureInfo is null + */ + public void setSignatureInfo(SignatureInfoCreationType signatureInfo) throws SLCommandException { + + if (signatureLocation != null) { + throw new IllegalStateException("SignatureEnvironment already set."); + } + + Base64XMLOptRefContentType signatureEnvironment = signatureInfo.getSignatureEnvironment(); + + if (signatureEnvironment == null) { + + // no SignatureEnvironment, so we use an empty document and the document as parent + ensureSignatureLocation(); + + } else { + + // parse SignatureEnvrionment and use as document + Document document = parseSignatureEnvironment(signatureEnvironment, signatureInfo.getSupplement()); + ctx.setDocument(document); + + signatureLocation = new SignatureLocation(ctx); + signatureLocation.setSignatureInfo(signatureInfo); + + } + + } + + /** + * Ensures a SignatureLocation for this Signature. + */ + private void ensureSignatureLocation() { + + if (signatureLocation == null) { + Document document = DOMUtils.createDocument(); + ctx.setDocument(document); + + signatureLocation = new SignatureLocation(ctx); + signatureLocation.setParent(document); + } + + } + + /** + * Adds a DataObject with the information given by the + * dataObjectInfo provided to this Signature. + * + * @param dataObjectInfo + * the DataObjectInfo element + * + * @throws SLCommandException + * if adding the DataObject fails + * @throws SLRequestException + * if the information provided by the given + * dataObjectInfo does not conform to the security + * layer specification + * @throws NullPointerException + * if dataObjectInfo is null + */ + public void addDataObject(DataObjectInfoType dataObjectInfo) throws SLCommandException, SLRequestException { + + ensureSignatureLocation(); + + DataObject dataObject = new DataObject(ctx); + dataObject.setDataObjectInfo(dataObjectInfo); + + dataObjects.add(dataObject); + +// dataObjectReferencIds.put(dataObject.getReference().getId(), dataObject); + + } + + /** + * Sets the SigningTime qualifying property of this Signature. + * + * @param signingTime the signing time to set + */ + public void setSigningTime(Date signingTime) { + this.signingTime = signingTime; + } + + /** + * Sets the SignerCertificate qualifying property of this Signature. + * + * @param certificate the signer's certificate + */ + public void setSignerCeritifcate(X509Certificate certificate) { + this.signerCertificate = certificate; + } + + /** + * Builds the XMLSignature data structure of this Signature as configured by + * the various setter methods. + * + * @throws SLCommandException if building this signature fails + */ + public void buildXMLSignature() throws SLCommandException { + + String signatureId = ctx.getIdValueFactory().createIdValue("Signature"); + + List objects = new ArrayList(); + List references = new ArrayList(); + + // add all data objects + for (DataObject dataObject : dataObjects) { + if (dataObject.getXmlObject() != null) { + objects.add(dataObject.getXmlObject()); + } + if (dataObject.getReference() != null) { + references.add(dataObject.getReference()); + } + } + + addXAdESObjectAndReference(objects, references, signatureId); + + XMLSignatureFactory signatureFactory = ctx.getSignatureFactory(); + AlgorithmMethodFactory algorithmMethodFactory = ctx.getAlgorithmMethodFactory(); + + CanonicalizationMethod cm; + SignatureMethod sm; + try { + cm = algorithmMethodFactory.createCanonicalizationMethod(ctx); + sm = algorithmMethodFactory.createSignatureMethod(ctx); + } catch (NoSuchAlgorithmException e) { + log.error("Failed to get Canonicalization or Signature algorithm.", e); + throw new SLCommandException(4006); + } catch (InvalidAlgorithmParameterException e) { + log.error("Failed to get Canonicalization or Signature algorithm.", e); + throw new SLCommandException(4006); + } + + String siId = ctx.getIdValueFactory().createIdValue("SignedInfo"); + + SignedInfo si = signatureFactory.newSignedInfo(cm, sm, references, siId); + + KeyInfo ki = null; + if (signerCertificate != null) { + KeyInfoFactory kif = KeyInfoFactory.getInstance(); + X509Data x509Data = kif.newX509Data(Collections.singletonList(signerCertificate)); + ki = kif.newKeyInfo(Collections.singletonList(x509Data)); + } + + String signatureValueId = ctx.getIdValueFactory().createIdValue("SignatureValue"); + + xmlSignature = signatureFactory.newXMLSignature(si, ki, objects, signatureId, signatureValueId); + + } + + /** + * Sign this Signature using the given signContext. + *

+ * Call's {@link #buildXMLSignature()} if it has not been called yet. + *

+ * + * @param signContext + * the signing context + * + * @throws MarshalException + * if marshalling the XMLSignature fails + * @throws XMLSignatureException + * if signing the XMLSignature fails + * @throws SLCommandException + * if building the XMLSignature fails + * @throws SLViewerException + * @throws NullPointerException + * if signContext is null + */ + public void sign(DOMSignContext signContext) throws MarshalException, XMLSignatureException, SLCommandException, SLViewerException { + + if (xmlSignature == null) { + buildXMLSignature(); + } + + for (IdAttribute idAttribute : idAttributes) { + signContext.setIdAttributeNS(idAttribute.element, idAttribute.namespaceURI, idAttribute.localName); + } + + // DO NOT USE: + // signContext.setProperty("iaik.xml.crypto.dsig.sign-over", Boolean.TRUE); + + signContext.setProperty("javax.xml.crypto.dsig.cacheReference", Boolean.TRUE); + + signContext.putNamespacePrefix(XMLSignature.XMLNS,XMLDSIG_PREFIX); + + signContext.setURIDereferencer(new URIDereferncerAdapter(ctx.getDereferencerContext())); + + try { + xmlSignature.sign(signContext); + } catch (XMLSignatureException e) { + Throwable cause = e.getCause(); + while (cause != null) { + if (cause instanceof STALSignatureException) { + if (((STALSignatureException) cause).getCause() instanceof SLViewerException) { + throw (SLViewerException) ((STALSignatureException) cause).getCause(); + } + int errorCode = ((STALSignatureException) cause).getErrorCode(); + SLCommandException commandException = new SLCommandException(errorCode); + log.info("Failed to sign signature.", commandException); + throw commandException; + } else { + cause = cause.getCause(); + } + } + throw e; + } + + // debug + if (log.isTraceEnabled()) { + for (DataObject dataObject : dataObjects) { + Reference reference = dataObject.getReference(); + InputStream digestInputStream = reference.getDigestInputStream(); + if (digestInputStream != null) { + String mimeType = dataObject.getMimeType(); + StringBuilder sb = new StringBuilder(); + sb.append("DigestInput for Reference with id='"); + sb.append(reference.getId()); + sb.append("' (MIME-Type="); + sb.append(dataObject.getMimeType()); + sb.append("):\n"); + try { + if (mimeType != null && ( + mimeType.startsWith("text") || + "application/xhtml+xml".equals(mimeType))) { + byte[] b = new byte[512]; + for (int l; (l = digestInputStream.read(b)) != -1;) { + sb.append(new String(b, 0, l)); + } + } else { + sb.append(HexDump.hexDump(digestInputStream)); + } + } catch (IOException e) { + log.error(e); + } + log.trace(sb.toString()); + } else { + log.trace("Reference caching is not enabled."); + } + } + for (Reference reference : getReferences()) { + if (reference.getType() != null) { + InputStream digestInputStream = reference.getDigestInputStream(); + if (digestInputStream != null) { + StringBuilder sb = new StringBuilder(); + sb.append("DigestInput for Reference with id='"); + sb.append(reference.getId()); + sb.append("'; Type:"); + sb.append(reference.getType()); + sb.append("):\n"); + try { + byte[] b = new byte[512]; + for (int l; (l = digestInputStream.read(b)) != -1;) { + sb.append(new String(b, 0, l)); + } + } catch (IOException e) { + log.error(e); + } + log.trace(sb.toString()); + } else { + log.trace("Reference caching is not enabled."); + } + + } + } + } + + } + + /** + * Sign this Signature using the given stal implementation and + * keyboxIdentifier. + *

+ * This method configures an appropriate {@link DOMSignContext} and calls + * {@link #sign(DOMSignContext)}. If {@link #buildXMLSignature()} has not been + * called yet, it is called by this method. + *

+ * + * @param stal + * the STAL implementation to use + * @param keyboxIdentifier + * the KeyboxIdentifier to use + * + * @throws MarshalException + * if marshalling this Signature fails + * @throws XMLSignatureException + * if signing this Signature fails + * @throws SLCommandException + * if building this Signature fails + * @throws SLViewerException + * @throws NullPointerException + * if stal or keyboxIdentifier is + * null + */ + public void sign(STAL stal, String keyboxIdentifier) throws MarshalException, XMLSignatureException, SLCommandException, SLViewerException { + + if (stal == null) { + throw new NullPointerException("Argument 'stal' must not be null."); + } + + if (keyboxIdentifier == null) { + throw new NullPointerException("Argument 'keyboxIdentifier' must not be null."); + } + + if (xmlSignature == null) { + buildXMLSignature(); + } + + SignatureMethod signatureMethod = xmlSignature.getSignedInfo().getSignatureMethod(); + String algorithm = signatureMethod.getAlgorithm(); + + //don't get hashDataInputs (digestInputStreams) now, only once Signature.sign() was called (cf STALSignature.engineSign) + PrivateKey privateKey = new STALPrivateKey(stal, algorithm, keyboxIdentifier, dataObjects); // hashDataInputs); + + DOMSignContext signContext; + if (getNextSibling() == null) { + signContext = new DOMSignContext(privateKey, getParent()); + } else { + signContext = new DOMSignContext(privateKey, getParent(), getNextSibling()); + } + + sign(signContext); + } + +// @Override +// public HashDataInput getHashDataInput(final String referenceId) { +// final DataObject dataObject = dataObjectReferencIds.get(referenceId); +// if (dataObject != null) { +// return new HashDataInput() { +// +// InputStream hashDataInput = dataObject.getReference().getDigestInputStream(); +// +// @Override +// public String getReferenceId() { +// return referenceId; +// } +// +// @Override +// public String getMimeType() { +// return dataObject.getMimeType(); +// } +// +// @Override +// public InputStream getHashDataInput() { +// return hashDataInput; +// } +// }; +// } +// return null; +// } + + /** + * Adds the XAdES QualifyingProperties as an + * ds:Object and a corresponding ds:Reference to + * it's SignedProperties element to this Signature. + * + * @param objects + * the list of ds:Objects to add the created + * ds:Object to + * @param references + * the list of ds:References to add the created + * ds:Reference to + * @param signatureId TODO + * @throws SLCommandException + * if creating and adding the XAdES + * QualifyingProperties fails + * @throws NullPointerException + * if objects or references is + * null + */ + private void addXAdESObjectAndReference(List objects, List references, String signatureId) throws SLCommandException { + + QualifyingPropertiesFactory factory = QualifyingPropertiesFactory.getInstance(); + + String idValue = ctx.getIdValueFactory().createIdValue("SignedProperties"); + + Date date = (signingTime != null) ? signingTime : new Date(); + + List signingCertificates; + if (signerCertificate != null) { + signingCertificates = Collections.singletonList(signerCertificate); + } else { + signingCertificates = Collections.emptyList(); + } + + // TODO: report MOA-SP bug + // + // The security layer specification mandates the use of version 1.2.2. of the + // XAdES QualifyingProperties. However MOA-SP supports only version 1.1.1. Therefore, + // the version 1.1.1 is used in order to be compatible with current MOA-SP versions. + + List dataObjectFormats = new ArrayList(); + for (DataObject dataObject : dataObjects) { + if (dataObject.getMimeType() != null && dataObject.getReference() != null) { + Reference reference = dataObject.getReference(); + if (reference.getId() != null) { + String objectReference = "#" + reference.getId(); + dataObjectFormats.add(factory.createDataObjectFormatType( + objectReference, dataObject.getMimeType(), dataObject + .getDescription())); + } + } + } + + String target = "#" + signatureId; + + DigestMethod dm; + try { + dm = ctx.getAlgorithmMethodFactory().createDigestMethod(ctx); + } catch (NoSuchAlgorithmException e) { + log.error("Failed to get DigestMethod algorithm.", e); + throw new SLCommandException(4006); + } catch (InvalidAlgorithmParameterException e) { + log.error("Failed to get DigestMethod algorithm.", e); + throw new SLCommandException(4006); + } + + JAXBElement qualifyingProperties; + try { + qualifyingProperties = factory.createQualifyingProperties111(target, date, signingCertificates, idValue, dataObjectFormats, dm); + } catch (QualifyingPropertiesException e) { + log.error("Failed to create QualifyingProperties.", e); + throw new SLCommandException(4000); + } + + DocumentFragment fragment = ctx.getDocument().createDocumentFragment(); + + try { + factory.marshallQualifyingProperties(qualifyingProperties, fragment); + } catch (JAXBException e) { + log.error("Failed to marshal QualifyingProperties.", e); + throw new SLCommandException(4000); + } + + List content = Collections.singletonList(new DOMStructure(fragment.getFirstChild())); + + String objectIdValue = ctx.getIdValueFactory().createIdValue("Object"); + + XMLObject object = ctx.getSignatureFactory().newXMLObject(content, objectIdValue, null, null); + + objects.add(object); + + // TODO: Report MOA-SP Bug + // + // Direct referencing of the SignedPorperties Id-attribute is not supported by MOA-SP + // because the QualifyingProperties are parsed without the XAdES schema. Therefore, + // the shorthand XPointer could not be resolved. + // + // The following workaround uses an XPointer to select the SignedProperties in order + // to allow the signature to be verified with MOA-SP. + + String referenceURI = "#xmlns(xades=http://uri.etsi.org/01903/v1.1.1%23)%20xpointer(id('" + + objectIdValue + + "')/child::xades:QualifyingProperties/child::xades:SignedProperties)"; + + String referenceIdValue = ctx.getIdValueFactory().createIdValue("Reference"); + String referenceType = QualifyingPropertiesFactory.SIGNED_PROPERTIES_REFERENCE_TYPE_V1_1_1; + + try { + dm = ctx.getAlgorithmMethodFactory().createDigestMethod(ctx); + } catch (NoSuchAlgorithmException e) { + log.error("Failed to get DigestMethod algorithm.", e); + throw new SLCommandException(4006); + } catch (InvalidAlgorithmParameterException e) { + log.error("Failed to get DigestMethod algorithm.", e); + throw new SLCommandException(4006); + } + + Reference reference = ctx.getSignatureFactory().newReference(referenceURI, dm, null, referenceType, referenceIdValue); + + references.add(reference); + + Node child = fragment.getFirstChild(); + if (child instanceof Element) { + NodeList nodes = ((Element) child).getElementsByTagNameNS(QualifyingPropertiesFactory.NS_URI_V1_1_1, "SignedProperties"); + if (nodes.getLength() > 0) { + IdAttribute idAttribute = new IdAttribute(); + idAttribute.element = (Element) nodes.item(0); + idAttribute.namespaceURI = null; + idAttribute.localName = "Id"; + idAttributes.add(idAttribute); + } + } + + } + + /** + * Parse the SignatureEnvironment. + * + * @param signatureEnvironment + * the SignatureEnvironment element + * @param supplements + * an optional list of Supplements (may be + * null) + * + * @return the parsed SignatureEnvironment document + * + * @throws SLCommandException + * if parsing the SignatureEnvironment fails + * @throws NullPointerException + * if signatureEnvironment is null + */ + private Document parseSignatureEnvironment( + Base64XMLOptRefContentType signatureEnvironment, + List supplements) throws SLCommandException { + + if (signatureEnvironment == null) { + throw new NullPointerException("Argument 'signatureEnvironment' must not be null."); + } + + LSInput input; + try { + if (signatureEnvironment.getReference() != null) { + log.debug("SignatureEnvironment contains Reference " + signatureEnvironment.getReference() + "."); + input = createLSInput(signatureEnvironment.getReference()); + } else if (signatureEnvironment.getBase64Content() != null) { + log.debug("SignatureEnvironment contains Base64Content."); + input = createLSInput(signatureEnvironment.getBase64Content()); + } else if (signatureEnvironment.getXMLContent() != null) { + log.debug("SignatureEnvironment contains XMLContent."); + input = createLSInput((XMLContentType) signatureEnvironment.getXMLContent()); + } else { + // the schema does not allow us to reach this point + throw new SLCommandException(4000); + } + } catch (IOException e) { + log.info("XML document in which the signature is to be integrated cannot be resolved.", e); + throw new SLCommandException(4100); + } catch (XMLStreamException e) { + log.info("XML document in which the signature is to be integrated cannot be resolved.", e); + throw new SLCommandException(4100); + } + + LSParser parser = domImplLS.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null); + DOMConfiguration domConfig = parser.getDomConfig(); + SimpleDOMErrorHandler errorHandler = new SimpleDOMErrorHandler(); + domConfig.setParameter("error-handler", errorHandler); + LSResourceResolverAdapter resourceResolver = new LSResourceResolverAdapter(supplements); + domConfig.setParameter("resource-resolver", resourceResolver); + domConfig.setParameter("validate", Boolean.TRUE); + + Document doc; + try { + doc = parser.parse(input); + } catch (DOMException e) { + log.info("XML document in which the signature is to be integrated cannot be parsed.", e); + throw new SLCommandException(4101); + } catch (LSException e) { + log.info("XML document in which the signature is to be integrated cannot be parsed.", e); + throw new SLCommandException(4101); + } + + if (resourceResolver.getError() != null) { + log.info("Failed to resolve resource while parsing SignatureEnvironment document.", resourceResolver.getError()); + // we don't stop here, as we only _try_ to parse validating + } + + if (errorHandler.hasFatalErrors()) { + // log fatal errors + if (log.isInfoEnabled()) { + List errorMessages = errorHandler.getErrorMessages(); + StringBuffer sb = new StringBuffer(); + for (String errorMessage : errorMessages) { + sb.append(" "); + sb.append(errorMessage); + } + log.info("XML document in which the signature is to be integrated cannot be parsed." + sb.toString()); + } + throw new SLCommandException(4101); + } + + // log parsed document + if (log.isTraceEnabled()) { + + StringWriter writer = new StringWriter(); + + writer.write("SignatureEnvironment:\n"); + + LSOutput output = domImplLS.createLSOutput(); + output.setCharacterStream(writer); + output.setEncoding("UTF-8"); + LSSerializer serializer = domImplLS.createLSSerializer(); + serializer.write(doc, output); + + log.trace(writer.toString()); + } + + return doc; + + } + + /** + * Creates an LSInput from the given reference URI. + * + * @param reference + * the reference URL + * + * @return an LSInput from the given reference URI + * + * @throws IOException + * if dereferencing the given reference fails + */ + private LSInput createLSInput(String reference) throws IOException { + + URLDereferencer urlDereferencer = URLDereferencer.getInstance(); + StreamData streamData = urlDereferencer.dereference(reference, ctx.getDereferencerContext()); + + String contentType = streamData.getContentType(); + String charset = HttpUtil.getCharset(contentType, true); + InputStreamReader streamReader; + try { + streamReader = new InputStreamReader(streamData.getStream(), charset); + } catch (UnsupportedEncodingException e) { + log.info("Charset " + charset + " not supported. Using default."); + streamReader = new InputStreamReader(streamData.getStream()); + } + + LSInput input = domImplLS.createLSInput(); + input = domImplLS.createLSInput(); + input.setCharacterStream(streamReader); + + return input; + + } + + /** + * Creates an LSInput from the given content bytes. + * + * @param content + * the content bytes + * + * @return an LSInput from the givne content bytes + */ + private LSInput createLSInput(byte[] content) { + + ByteArrayInputStream inputStream = new ByteArrayInputStream(content); + LSInput input = domImplLS.createLSInput(); + input.setByteStream(inputStream); + + return input; + + } + + /** + * Creates an LSInput from the given XML content. + * + * @param content + * the XML content + * @return an LSInput from the given XML content + * + * @throws XMLStreamException + * if reading the XMLStream from the given XML content fails + */ + private LSInput createLSInput(XMLContentType content) throws XMLStreamException { + + ByteArrayOutputStream redirectedStream = content.getRedirectedStream(); + if (redirectedStream != null) { + LSInput input = domImplLS.createLSInput(); + input.setByteStream(new ByteArrayInputStream(redirectedStream.toByteArray())); + return input; + } else { + return null; + } + + } + + /** + * Represents an xsd:Id-attribute value. + * + * @author mcentner + */ + private class IdAttribute { + + private Element element; + + private String namespaceURI; + + private String localName; + + } + + /** + * An implementation of the LSResourceResolver that uses a list of supplements + * to resolve resources. + * + * @author mcentner + */ + private class LSResourceResolverAdapter implements LSResourceResolver { + + List supplements; + + private LSResourceResolverAdapter( + List supplements) { + this.supplements = supplements; + } + + private Exception error; + + /** + * @return the error + */ + public Exception getError() { + return error; + } + + @Override + public LSInput resolveResource(String type, String namespaceURI, + String publicId, String systemId, String baseURI) { + + if (log.isTraceEnabled()) { + log.trace("Resolve resource :" + + "\n type=" + type + + "\n namespaceURI=" + namespaceURI + + "\n publicId=" + publicId + + "\n systemId=" + systemId + + "\n baseURI=" + baseURI); + } + + if (systemId != null) { + + log.debug("Resolve resource '" + systemId + "'."); + + for (DataObjectAssociationType supplement : supplements) { + + Base64XMLLocRefReqRefContentType content = supplement.getContent(); + if (content != null) { + + String reference = content.getReference(); + if (systemId.equals(reference)) { + + try { + if (content.getLocRefContent() != null) { + log.trace("Resolved resource '" + reference + "' to supplement with LocRefContent."); + return createLSInput(content.getLocRefContent()); + } else if (content.getBase64Content() != null) { + log.trace("Resolved resource '" + reference + "' to supplement with Base64Content."); + return createLSInput(content.getBase64Content()); + } else if (content.getXMLContent() != null) { + log.trace("Resolved resource '" + reference + "' to supplement with XMLContent."); + return createLSInput((XMLContentType) content.getXMLContent()); + } else { + return null; + } + } catch (IOException e) { + log.info("Failed to resolve resource '" + systemId + "' to supplement.", e); + error = e; + return null; + } catch (XMLStreamException e) { + log.info("Failed to resolve resource '" + systemId + "' to supplement.", e); + error = e; + return null; + } + + } + + } + + } + + log.info("Failed to resolve resource '" + systemId + "' to supplement. No such supplement."); + + } + + return null; + + } + + + } + +} -- cgit v1.2.3