Java Code Examples for org.apache.xml.security.transforms.Transforms#TRANSFORM_BASE64_DECODE

/**
 * Verifies a compatibility of defined signature parameters and reference transformations
 */
private void checkReferencesValidity() {
	String referenceWrongMessage = "Reference setting is not correct! ";
	for (DSSReference reference : params.getReferences()) {
		List<DSSTransform> transforms = reference.getTransforms();
		if (Utils.isCollectionNotEmpty(transforms)) {
			boolean incorrectUsageOfEnvelopedSignature = false;
			for (DSSTransform transform : transforms) {
				switch (transform.getAlgorithm()) {
				case Transforms.TRANSFORM_BASE64_DECODE:
					if (params.isEmbedXML()) {
						throw new DSSException(referenceWrongMessage + "The embedXML(true) parameter is not compatible with base64 transform.");
					} else if (params.isManifestSignature()) {
						throw new DSSException(referenceWrongMessage + "Manifest signature is not compatible with base64 transform.");
					} else if (!SignaturePackaging.ENVELOPING.equals(params.getSignaturePackaging())) {
						throw new DSSException(referenceWrongMessage + 
								String.format("Base64 transform is not compatible with %s signature format.", params.getSignaturePackaging()));
					} else if (transforms.size() > 1) {
						throw new DSSException(referenceWrongMessage + "Base64 transform cannot be used with other transformations.");
					}
					break;
				case Transforms.TRANSFORM_ENVELOPED_SIGNATURE:
					incorrectUsageOfEnvelopedSignature = true;
					break;
				case Transforms.TRANSFORM_C14N11_OMIT_COMMENTS:
				case Transforms.TRANSFORM_C14N11_WITH_COMMENTS:
				case Transforms.TRANSFORM_C14N_EXCL_OMIT_COMMENTS:
				case Transforms.TRANSFORM_C14N_EXCL_WITH_COMMENTS:
				case Transforms.TRANSFORM_C14N_OMIT_COMMENTS:
				case Transforms.TRANSFORM_C14N_WITH_COMMENTS:
					// enveloped signature must follow up by a canonicalization
					incorrectUsageOfEnvelopedSignature = false;
					break;
				default:
					// do nothing
					break;
				}
				
			}
			if (incorrectUsageOfEnvelopedSignature) {
				throw new DSSException(referenceWrongMessage + "Enveloped Signature Transform must be followed up by a Canonicalization Transform.");
			}
			
		} else {
			String uri = reference.getUri();
			if (Utils.isStringBlank(uri) || DomUtils.isElementReference(uri)) {
				LOG.warn("A reference with id='{}' and uri='{}' points to an XML Node, while no transforms are defined! "
						+ "The configuration can lead to an unexpected result!", reference.getId(), uri);
			}
			if (SignaturePackaging.ENVELOPED.equals(params.getSignaturePackaging()) && Utils.isStringBlank(uri)) {
				throw new DSSException(referenceWrongMessage + "Enveloped signature must have an enveloped transformation!");
			}
			
		}
	}
}
 

public Base64Transform() {
	super(Transforms.TRANSFORM_BASE64_DECODE);
}
 

public Base64Transform(DSSNamespace xmlDSigNamespace) {
	super(xmlDSigNamespace, Transforms.TRANSFORM_BASE64_DECODE);
}