Java Code Examples for org.apache.xml.security.signature.Reference#getReferencedBytes()

The following examples show how to use org.apache.xml.security.signature.Reference#getReferencedBytes() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: XAdESTimestampDataBuilder.java From dss with GNU Lesser General Public License v2.1

5 votes

private byte[] getReferenceBytes(final Reference reference, final String canonicalizationMethod) throws XMLSecurityException {
	byte[] referencedBytes = reference.getReferencedBytes();
	if (DomUtils.isDOM(referencedBytes)) {
		referencedBytes = DSSXMLUtils.canonicalize(canonicalizationMethod, referencedBytes);
	}
	if (LOG.isTraceEnabled()) {
		LOG.trace("ReferencedBytes : {}", new String(referencedBytes));
	}
	return referencedBytes;
}

Example 2

Source File: XAdESTimestampDataBuilder.java From dss with GNU Lesser General Public License v2.1

5 votes

private void writeReferenceBytes(final Reference reference, ByteArrayOutputStream buffer) throws IOException {
	try {
		final byte[] referencedBytes = reference.getReferencedBytes();
		if (referencedBytes != null) {
			buffer.write(referencedBytes);
		} else {
			throw new DSSException(String.format("No binaries found for URI '%s'", reference.getURI()));
		}
	} catch (XMLSecurityException e) {
		throw new DSSException(String.format("Unable to retrieve content for URI '%s' : %s", reference.getURI(), e.getMessage()), e);
	}
}

Example 3

Source File: XAdESSignatureUtils.java From dss with GNU Lesser General Public License v2.1

5 votes

private static DSSDocument getReferenceDocument(Reference reference, XAdESSignature signature) {
	if (reference.typeIsReferenceToObject()) {
		List<Element> signatureObjects = signature.getSignatureObjects();
		for (Element sigObject : signatureObjects) {
			Node referencedObject = sigObject;
			String objectId = sigObject.getAttribute("Id");
			if (Utils.endsWithIgnoreCase(reference.getURI(), objectId)) {
				if (reference.typeIsReferenceToObject() && sigObject.hasChildNodes()) {
					referencedObject = sigObject.getFirstChild();
				}
				byte[] bytes = DSSXMLUtils.getNodeBytes(referencedObject);
				if (bytes != null) {
					return new InMemoryDocument(bytes, objectId);
				}
			}
		}
	}
	
	// if not an object or object has not been found
	try {
		byte[] referencedBytes = reference.getReferencedBytes();
		if (referencedBytes != null) {
			return new InMemoryDocument(referencedBytes, reference.getURI());
		}
		LOG.warn("Reference bytes returned null value : {}", reference.getId());
	} catch (Exception e) {
		LOG.warn("Unable to retrieve reference {}. Reason : {}", reference.getId(), e.getMessage(), e);
	}
	
	if (LOG.isDebugEnabled()) {
		LOG.debug("A referenced document not found for a reference with Id : [{}]", reference.getId());
	}
	return null;
}

Example 4

Source File: DSSXMLUtils.java From dss with GNU Lesser General Public License v2.1

5 votes

/**
 * Returns bytes of the original referenced data
 * @param reference {@link Reference} to get bytes from
 * @return byte array containing original data
 */
public static byte[] getReferenceOriginalContentBytes(Reference reference) {
	
	try {
		// returns bytes after transformation in case of enveloped signature
		Transforms transforms = reference.getTransforms();
		if (transforms != null) {
			Element transformsElement = transforms.getElement();
			NodeList transformChildNodes = transformsElement.getChildNodes();
			if (transformChildNodes != null && transformChildNodes.getLength() > 0) {
				for (int i = 0; i < transformChildNodes.getLength(); i++) {
					Node transformation = transformChildNodes.item(i);
					if (isEnvelopedTransform(transformation)) {
						return reference.getReferencedBytes();
					}
				    // if enveloped transformations are not applied to the signature go further and 
					// return bytes before transformation
				}
			}
		}
		
	} catch (XMLSecurityException | XMLSecurityRuntimeException e) {
		// if exception occurs during the transformations
		LOG.warn("Signature reference with id [{}] is corrupted or has an invalid format. "
				+ "Original data cannot be obtained. Reason: [{}]", reference.getId(), e.getMessage());
		
	}
	// otherwise bytes before transformation
	return getBytesBeforeTransformation(reference);
}