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Apache XML Security for Java supports XML-Signature Syntax and Processing,
W3C Recommendation 12 February 2002, and XML Encryption Syntax and
Processing, W3C Recommendation 10 December 2002. As of version 1.4,
the library supports the standard Java API JSR-105: XML Digital Signature APIs.
/**
* 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.stax.XMLSecStartElement;
import java.io.InputStream;
import java.net.URI;
/**
* Resolver for local filesystem resources. Use the standard java security-manager to
* restrict filesystem accesses.
*
* @author $Author: coheigea $
* @version $Revision: 1513098 $ $Date: 2013-08-12 11:28:33 +0100 (Mon, 12 Aug 2013) $
*/
public class ResolverFilesystem implements ResourceResolver, ResourceResolverLookup {
private String uri;
private String baseURI;
public ResolverFilesystem() {
}
public ResolverFilesystem(String uri, String baseURI) {
this.uri = uri;
this.baseURI = baseURI;
}
@Override
public ResourceResolverLookup canResolve(String uri, String baseURI) {
if (uri == null) {
return null;
}
if (uri.startsWith("file:") || baseURI != null && baseURI.startsWith("file:")) {
return this;
}
return null;
}
@Override
public ResourceResolver newInstance(String uri, String baseURI) {
return new ResolverFilesystem(uri, baseURI);
}
@Override
public boolean isSameDocumentReference() {
return false;
}
@Override
public boolean matches(XMLSecStartElement xmlSecStartElement) {
return false;
}
@Override
public InputStream getInputStreamFromExternalReference() throws XMLSecurityException {
try {
URI tmp;
if (baseURI == null || "".equals(baseURI)) {
tmp = new URI(uri);
} else {
tmp = new URI(baseURI).resolve(uri);
}
if (tmp.getFragment() != null) {
tmp = new URI(tmp.getScheme(), tmp.getSchemeSpecificPart(), null);
}
return tmp.toURL().openStream();
} catch (Exception e) {
throw new XMLSecurityException(e);
}
}
}