| /** |
| * 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 org.apache.xml.security.stax.impl.resourceResolvers; |
| |
| import org.apache.xml.security.exceptions.XMLSecurityException; |
| import org.apache.xml.security.stax.ext.ResourceResolver; |
| import org.apache.xml.security.stax.ext.ResourceResolverLookup; |
| import org.apache.xml.security.stax.ext.XMLSecurityConstants; |
| import org.apache.xml.security.stax.ext.stax.XMLSecStartElement; |
| |
| import javax.xml.namespace.QName; |
| import javax.xml.stream.events.Attribute; |
| import java.io.InputStream; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * Resolver for xpointer references in the same document. |
| * Supported xpointers are '#xpointer(/)' and '#xpointer(id('ID'))' |
| * |
| */ |
| public class ResolverXPointer implements ResourceResolver, ResourceResolverLookup { |
| |
| private Pattern pattern = Pattern.compile("^#xpointer\\((/)|(id\\([\"\']([^\"\']*)[\"\']\\))\\)"); |
| private String id; |
| private boolean rootNodeOccured = false; |
| |
| public ResolverXPointer() { |
| } |
| |
| public ResolverXPointer(String uri) { |
| Matcher matcher = pattern.matcher(uri); |
| if (matcher.find() && matcher.groupCount() == 3) { |
| String slash = matcher.group(1); |
| if (slash != null) { |
| this.id = null; |
| return; |
| } |
| String id = matcher.group(3); |
| if (id != null) { |
| this.id = id; |
| return; |
| } |
| } |
| } |
| |
| public String getId() { |
| return id; |
| } |
| |
| public boolean isRootNodeOccured() { |
| return rootNodeOccured; |
| } |
| |
| public void setRootNodeOccured(boolean rootNodeOccured) { |
| this.rootNodeOccured = rootNodeOccured; |
| } |
| |
| @Override |
| public ResourceResolverLookup canResolve(String uri, String baseURI) { |
| if (uri != null && pattern.matcher(uri).find()) { |
| return this; |
| } |
| return null; |
| } |
| |
| @Override |
| public ResourceResolver newInstance(String uri, String baseURI) { |
| return new ResolverXPointer(uri); |
| } |
| |
| @Override |
| public boolean isSameDocumentReference() { |
| return true; |
| } |
| |
| @Override |
| public boolean matches(XMLSecStartElement xmlSecStartElement) { |
| return this.matches(xmlSecStartElement, XMLSecurityConstants.ATT_NULL_Id); |
| } |
| |
| public boolean matches(XMLSecStartElement xmlSecStartElement, QName idAttributeNS) { |
| //when id is null we have #xpointer(/) and then we just return true for the first start-element |
| if (id == null) { |
| if (!rootNodeOccured) { |
| rootNodeOccured = true; |
| return true; |
| } |
| return false; |
| } |
| //case #xpointer(id('ID')): |
| Attribute attribute = xmlSecStartElement.getAttributeByName(idAttributeNS); |
| if (attribute != null && attribute.getValue().equals(id)) { |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public InputStream getInputStreamFromExternalReference() throws XMLSecurityException { |
| return null; |
| } |
| } |