1 /* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5 /* 6 * Copyright 1999-2004 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 package com.sun.org.apache.xml.internal.security.transforms.implementations; 22 23 import java.io.OutputStream; 24 25 import com.sun.org.apache.xml.internal.security.c14n.CanonicalizationException; 26 import com.sun.org.apache.xml.internal.security.c14n.implementations.Canonicalizer20010315ExclOmitComments; 27 import com.sun.org.apache.xml.internal.security.exceptions.XMLSecurityException; 28 import com.sun.org.apache.xml.internal.security.signature.XMLSignatureInput; 29 import com.sun.org.apache.xml.internal.security.transforms.Transform; 30 import com.sun.org.apache.xml.internal.security.transforms.TransformSpi; 31 import com.sun.org.apache.xml.internal.security.transforms.Transforms; 32 import com.sun.org.apache.xml.internal.security.transforms.params.InclusiveNamespaces; 33 import com.sun.org.apache.xml.internal.security.utils.XMLUtils; 34 import org.w3c.dom.Element; 35 36 /** 37 * Class TransformC14NExclusive 38 * 39 * @author $Author: mullan $ 40 * @version $Revision: 1.5 $ 41 */ 42 public class TransformC14NExclusive extends TransformSpi { 43 44 /** Field implementedTransformURI */ 45 public static final String implementedTransformURI = 46 Transforms.TRANSFORM_C14N_EXCL_OMIT_COMMENTS; 47 48 /** 49 * Method engineGetURI 50 * 51 * @inheritDoc 52 */ 53 protected String engineGetURI() { 54 return implementedTransformURI; 55 } 56 57 /** 58 * Method enginePerformTransform 59 * 60 * @param input 61 * @return the transformed of the input 62 * @throws CanonicalizationException 63 */ 64 protected XMLSignatureInput enginePerformTransform 65 (XMLSignatureInput input, Transform _transformObject) 66 throws CanonicalizationException { 67 return enginePerformTransform(input, null, _transformObject); 68 } 69 70 protected XMLSignatureInput enginePerformTransform(XMLSignatureInput input,OutputStream os, Transform _transformObject) 71 throws CanonicalizationException { 72 try { 73 String inclusiveNamespaces = null; 74 75 if (_transformObject 76 .length(InclusiveNamespaces 77 .ExclusiveCanonicalizationNamespace, InclusiveNamespaces 78 ._TAG_EC_INCLUSIVENAMESPACES) == 1) { 79 Element inclusiveElement = 80 XMLUtils.selectNode( 81 _transformObject.getElement().getFirstChild(), 82 InclusiveNamespaces.ExclusiveCanonicalizationNamespace, 83 InclusiveNamespaces._TAG_EC_INCLUSIVENAMESPACES,0); 84 85 inclusiveNamespaces = new InclusiveNamespaces(inclusiveElement, 86 _transformObject.getBaseURI()).getInclusiveNamespaces(); 87 } 88 89 Canonicalizer20010315ExclOmitComments c14n = 90 new Canonicalizer20010315ExclOmitComments(); 91 if (os!=null) { 92 c14n.setWriter(os); 93 } 94 byte []result; 95 result =c14n.engineCanonicalize(input, inclusiveNamespaces); 96 97 XMLSignatureInput output=new XMLSignatureInput(result); 98 if (os!=null) { 99 output.setOutputStream(os); 100 } 101 return output; 102 } catch (XMLSecurityException ex) { 103 throw new CanonicalizationException("empty", ex); 104 } 105 } 106 }