J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 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.utils.resolver.implementations; |
| 22 | |
| 23 | |
| 24 | |
| 25 | import java.io.FileInputStream; |
| 26 | |
| 27 | import com.sun.org.apache.xml.internal.utils.URI; |
| 28 | import com.sun.org.apache.xml.internal.security.signature.XMLSignatureInput; |
| 29 | import com.sun.org.apache.xml.internal.security.utils.resolver.ResourceResolverException; |
| 30 | import com.sun.org.apache.xml.internal.security.utils.resolver.ResourceResolverSpi; |
| 31 | import org.w3c.dom.Attr; |
| 32 | |
| 33 | |
| 34 | /** |
| 35 | * A simple ResourceResolver for requests into the local filesystem. |
| 36 | * |
| 37 | * @author $Author: raul $ |
| 38 | */ |
| 39 | public class ResolverLocalFilesystem extends ResourceResolverSpi { |
| 40 | |
| 41 | /** {@link java.util.logging} logging facility */ |
| 42 | static java.util.logging.Logger log = |
| 43 | java.util.logging.Logger.getLogger( |
| 44 | ResolverLocalFilesystem.class.getName()); |
| 45 | |
| 46 | /** |
| 47 | * @inheritDoc |
| 48 | */ |
| 49 | public XMLSignatureInput engineResolve(Attr uri, String BaseURI) |
| 50 | throws ResourceResolverException { |
| 51 | |
| 52 | try { |
| 53 | URI uriNew = new URI(new URI(BaseURI), uri.getNodeValue()); |
| 54 | |
| 55 | // if the URI contains a fragment, ignore it |
| 56 | URI uriNewNoFrag = new URI(uriNew); |
| 57 | |
| 58 | uriNewNoFrag.setFragment(null); |
| 59 | |
| 60 | String fileName = |
| 61 | ResolverLocalFilesystem |
| 62 | .translateUriToFilename(uriNewNoFrag.toString()); |
| 63 | FileInputStream inputStream = new FileInputStream(fileName); |
| 64 | XMLSignatureInput result = new XMLSignatureInput(inputStream); |
| 65 | |
| 66 | result.setSourceURI(uriNew.toString()); |
| 67 | |
| 68 | return result; |
| 69 | } catch (Exception e) { |
| 70 | throw new ResourceResolverException("generic.EmptyMessage", e, uri, |
| 71 | BaseURI); |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Method translateUriToFilename |
| 77 | * |
| 78 | * @param uri |
| 79 | * @return the string of the filename |
| 80 | */ |
| 81 | private static String translateUriToFilename(String uri) { |
| 82 | |
| 83 | String subStr = uri.substring("file:/".length()); |
| 84 | |
| 85 | if (subStr.indexOf("%20") > -1) |
| 86 | { |
| 87 | int offset = 0; |
| 88 | int index = 0; |
| 89 | StringBuffer temp = new StringBuffer(subStr.length()); |
| 90 | do |
| 91 | { |
| 92 | index = subStr.indexOf("%20",offset); |
| 93 | if (index == -1) temp.append(subStr.substring(offset)); |
| 94 | else |
| 95 | { |
| 96 | temp.append(subStr.substring(offset,index)); |
| 97 | temp.append(' '); |
| 98 | offset = index+3; |
| 99 | } |
| 100 | } |
| 101 | while(index != -1); |
| 102 | subStr = temp.toString(); |
| 103 | } |
| 104 | |
| 105 | if (subStr.charAt(1) == ':') { |
| 106 | // we're running M$ Windows, so this works fine |
| 107 | return subStr; |
| 108 | } |
| 109 | // we're running some UNIX, so we have to prepend a slash |
| 110 | return "/" + subStr; |
| 111 | } |
| 112 | |
| 113 | /** |
| 114 | * @inheritDoc |
| 115 | */ |
| 116 | public boolean engineCanResolve(Attr uri, String BaseURI) { |
| 117 | |
| 118 | if (uri == null) { |
| 119 | return false; |
| 120 | } |
| 121 | |
| 122 | String uriNodeValue = uri.getNodeValue(); |
| 123 | |
| 124 | if (uriNodeValue.equals("") || (uriNodeValue.charAt(0)=='#')) { |
| 125 | return false; |
| 126 | } |
| 127 | |
| 128 | try { |
| 129 | //URI uriNew = new URI(new URI(BaseURI), uri.getNodeValue()); |
| 130 | if (true) |
| 131 | if (log.isLoggable(java.util.logging.Level.FINE)) log.log(java.util.logging.Level.FINE, "I was asked whether I can resolve " + uriNodeValue/*uriNew.toString()*/); |
| 132 | |
| 133 | if ( uriNodeValue.startsWith("file:") || |
| 134 | BaseURI.startsWith("file:")/*uriNew.getScheme().equals("file")*/) { |
| 135 | if (true) |
| 136 | if (log.isLoggable(java.util.logging.Level.FINE)) log.log(java.util.logging.Level.FINE, "I state that I can resolve " + uriNodeValue/*uriNew.toString()*/); |
| 137 | |
| 138 | return true; |
| 139 | } |
| 140 | } catch (Exception e) {} |
| 141 | |
| 142 | if (log.isLoggable(java.util.logging.Level.FINE)) log.log(java.util.logging.Level.FINE, "But I can't"); |
| 143 | |
| 144 | return false; |
| 145 | } |
| 146 | } |