| /* |
| * Copyright 2005 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| /* |
| * $Id: DOMURIDereferencer.java,v 1.19 2005/09/23 20:09:34 mullan Exp $ |
| */ |
| package org.jcp.xml.dsig.internal.dom; |
| |
| import org.w3c.dom.Attr; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| |
| import com.sun.org.apache.xml.internal.security.Init; |
| import com.sun.org.apache.xml.internal.security.utils.IdResolver; |
| import com.sun.org.apache.xml.internal.security.utils.resolver.ResourceResolver; |
| import com.sun.org.apache.xml.internal.security.signature.XMLSignatureInput; |
| |
| import javax.xml.crypto.*; |
| import javax.xml.crypto.dom.*; |
| import javax.xml.crypto.dsig.*; |
| |
| /** |
| * DOM-based implementation of URIDereferencer. |
| * |
| * @author Sean Mullan |
| */ |
| public class DOMURIDereferencer implements URIDereferencer { |
| |
| static final URIDereferencer INSTANCE = new DOMURIDereferencer(); |
| |
| private DOMURIDereferencer() { |
| // need to call com.sun.org.apache.xml.internal.security.Init.init() |
| // before calling any apache security code |
| Init.init(); |
| } |
| |
| public Data dereference(URIReference uriRef, XMLCryptoContext context) |
| throws URIReferenceException { |
| |
| if (uriRef == null) { |
| throw new NullPointerException("uriRef cannot be null"); |
| } |
| if (context == null) { |
| throw new NullPointerException("context cannot be null"); |
| } |
| |
| DOMURIReference domRef = (DOMURIReference) uriRef; |
| Attr uriAttr = (Attr) domRef.getHere(); |
| String uri = uriRef.getURI(); |
| DOMCryptoContext dcc = (DOMCryptoContext) context; |
| |
| // Check if same-document URI and register ID |
| if (uri != null && uri.length() != 0 && uri.charAt(0) == '#') { |
| String id = uri.substring(1); |
| |
| if (id.startsWith("xpointer(id(")) { |
| int i1 = id.indexOf('\''); |
| int i2 = id.indexOf('\'', i1+1); |
| id = id.substring(i1+1, i2); |
| } |
| |
| // this is a bit of a hack to check for registered |
| // IDRefs and manually register them with Apache's IdResolver |
| // map which includes builtin schema knowledge of DSig/Enc IDs |
| if (context instanceof XMLSignContext) { |
| Node referencedElem = dcc.getElementById(id); |
| if (referencedElem != null) { |
| IdResolver.registerElementById((Element) referencedElem, id); |
| } |
| } |
| } |
| |
| try { |
| String baseURI = context.getBaseURI(); |
| ResourceResolver apacheResolver = |
| ResourceResolver.getInstance(uriAttr, baseURI); |
| XMLSignatureInput in = apacheResolver.resolve(uriAttr, baseURI); |
| if (in.isOctetStream()) { |
| return new ApacheOctetStreamData(in); |
| } else { |
| return new ApacheNodeSetData(in); |
| } |
| } catch (Exception e) { |
| throw new URIReferenceException(e); |
| } |
| } |
| } |