| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 com.sun.org.apache.xml.internal.security.transforms.implementations; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| import com.sun.org.apache.xml.internal.security.c14n.CanonicalizationException; |
| import com.sun.org.apache.xml.internal.security.c14n.implementations.Canonicalizer20010315Excl; |
| import com.sun.org.apache.xml.internal.security.c14n.implementations.Canonicalizer20010315ExclOmitComments; |
| import com.sun.org.apache.xml.internal.security.exceptions.XMLSecurityException; |
| import com.sun.org.apache.xml.internal.security.signature.XMLSignatureInput; |
| import com.sun.org.apache.xml.internal.security.transforms.TransformSpi; |
| import com.sun.org.apache.xml.internal.security.transforms.Transforms; |
| import com.sun.org.apache.xml.internal.security.transforms.params.InclusiveNamespaces; |
| import com.sun.org.apache.xml.internal.security.utils.XMLUtils; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| |
| /** |
| * Class TransformC14NExclusive |
| * |
| */ |
| public class TransformC14NExclusive extends TransformSpi { |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| protected String engineGetURI() { |
| return Transforms.TRANSFORM_C14N_EXCL_OMIT_COMMENTS; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| protected XMLSignatureInput enginePerformTransform( |
| XMLSignatureInput input, OutputStream os, Element transformElement, |
| String baseURI, boolean secureValidation |
| ) throws CanonicalizationException { |
| try { |
| String inclusiveNamespaces = null; |
| |
| if (length(transformElement, |
| InclusiveNamespaces.ExclusiveCanonicalizationNamespace, |
| InclusiveNamespaces._TAG_EC_INCLUSIVENAMESPACES) == 1 |
| ) { |
| Element inclusiveElement = |
| XMLUtils.selectNode( |
| transformElement.getFirstChild(), |
| InclusiveNamespaces.ExclusiveCanonicalizationNamespace, |
| InclusiveNamespaces._TAG_EC_INCLUSIVENAMESPACES, |
| 0 |
| ); |
| |
| inclusiveNamespaces = |
| new InclusiveNamespaces( |
| inclusiveElement, baseURI).getInclusiveNamespaces(); |
| } |
| |
| Canonicalizer20010315Excl c14n = getCanonicalizer(); |
| |
| if (os == null) { |
| try (ByteArrayOutputStream writer = new ByteArrayOutputStream()) { |
| c14n.engineCanonicalize(input, inclusiveNamespaces, writer, secureValidation); |
| writer.flush(); |
| XMLSignatureInput output = new XMLSignatureInput(writer.toByteArray()); |
| output.setSecureValidation(secureValidation); |
| return output; |
| } catch (IOException ex) { |
| throw new CanonicalizationException("empty", new Object[] {ex.getMessage()}); |
| } |
| } else { |
| c14n.engineCanonicalize(input, inclusiveNamespaces, os, secureValidation); |
| XMLSignatureInput output = new XMLSignatureInput((byte[])null); |
| output.setSecureValidation(secureValidation); |
| output.setOutputStream(os); |
| return output; |
| } |
| } catch (XMLSecurityException ex) { |
| throw new CanonicalizationException(ex); |
| } |
| } |
| |
| protected Canonicalizer20010315Excl getCanonicalizer() { |
| return new Canonicalizer20010315ExclOmitComments(); |
| } |
| |
| /** |
| * Method length |
| * |
| * @param namespace |
| * @param localname |
| * @return the number of elements {namespace}:localname under this element |
| */ |
| private int length(Element element, String namespace, String localname) { |
| int number = 0; |
| Node sibling = element.getFirstChild(); |
| while (sibling != null) { |
| if (localname.equals(sibling.getLocalName()) |
| && namespace.equals(sibling.getNamespaceURI())) { |
| number++; |
| } |
| sibling = sibling.getNextSibling(); |
| } |
| return number; |
| } |
| } |