1 /* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5 /* 6 * Copyright 2005 The Apache Software Foundation. 7 * 8 * Licensed under the Apache License, Version 2.0 (the "License"); 9 * you may not use this file except in compliance with the License. 10 * You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 * 20 */ 21 /* 22 * Copyright (c) 2005, 2008, Oracle and/or its affiliates. All rights reserved. 23 */ 24 /* 25 * $Id: DOMCanonicalXMLC14NMethod.java,v 1.2 2008/07/24 15:20:32 mullan Exp $ 26 */ 27 package org.jcp.xml.dsig.internal.dom; 28 29 import javax.xml.crypto.*; 30 import javax.xml.crypto.dsig.*; 31 import javax.xml.crypto.dsig.spec.TransformParameterSpec; 32 33 import java.security.InvalidAlgorithmParameterException; 34 35 import com.sun.org.apache.xml.internal.security.c14n.Canonicalizer; 36 import com.sun.org.apache.xml.internal.security.c14n.InvalidCanonicalizerException; 37 38 /** 39 * DOM-based implementation of CanonicalizationMethod for Canonical XML 40 * (with or without comments). Uses Apache XML-Sec Canonicalizer. 41 * 42 * @author Sean Mullan 43 */ 44 public final class DOMCanonicalXMLC14NMethod extends ApacheCanonicalizer { 45 46 public void init(TransformParameterSpec params) 47 throws InvalidAlgorithmParameterException { 48 if (params != null) { 49 throw new InvalidAlgorithmParameterException("no parameters " + 50 "should be specified for Canonical XML C14N algorithm"); 51 } 52 } 53 54 public Data transform(Data data, XMLCryptoContext xc) 55 throws TransformException { 56 57 // ignore comments if dereferencing same-document URI that requires 58 // you to omit comments, even if the Transform says otherwise - 59 // this is to be compliant with section 4.3.3.3 of W3C Rec. 60 if (data instanceof DOMSubTreeData) { 61 DOMSubTreeData subTree = (DOMSubTreeData) data; 62 if (subTree.excludeComments()) { 63 try { 64 apacheCanonicalizer = Canonicalizer.getInstance 65 (CanonicalizationMethod.INCLUSIVE); 66 } catch (InvalidCanonicalizerException ice) { 67 throw new TransformException 68 ("Couldn't find Canonicalizer for: " + 69 CanonicalizationMethod.INCLUSIVE + ": " + 70 ice.getMessage(), ice); 71 } 72 } 73 } 74 75 return canonicalize(data, xc); 76 } 77 }