Source Code Cross Referenced for ResolverId.java in  » 6.0-JDK-Modules-com.sun » xws-security » com » sun » xml » wss » impl » resolver » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules com.sun » xws security » com.sun.xml.wss.impl.resolver 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $Id: ResolverId.java,v 1.5 2007/01/08 16:06:09 shyam_rao Exp $
003:         */
004:
005:        /*
006:         * The contents of this file are subject to the terms
007:         * of the Common Development and Distribution License
008:         * (the License).  You may not use this file except in
009:         * compliance with the License.
010:         * 
011:         * You can obtain a copy of the license at
012:         * https://glassfish.dev.java.net/public/CDDLv1.0.html.
013:         * See the License for the specific language governing
014:         * permissions and limitations under the License.
015:         * 
016:         * When distributing Covered Code, include this CDDL
017:         * Header Notice in each file and include the License file
018:         * at https://glassfish.dev.java.net/public/CDDLv1.0.html.
019:         * If applicable, add the following below the CDDL Header,
020:         * with the fields enclosed by brackets [] replaced by
021:         * you own identifying information:
022:         * "Portions Copyrighted [year] [name of copyright owner]"
023:         * 
024:         * Copyright 2006 Sun Microsystems Inc. All Rights Reserved
025:         */
026:
027:        package com.sun.xml.wss.impl.resolver;
028:
029:        import java.util.HashSet;
030:        import java.util.Set;
031:        import java.util.logging.Level;
032:        import java.util.logging.Logger;
033:
034:        import javax.xml.transform.TransformerException;
035:
036:        import org.w3c.dom.Attr;
037:        import org.w3c.dom.Document;
038:        import org.w3c.dom.Element;
039:        import org.w3c.dom.NamedNodeMap;
040:        import org.w3c.dom.Node;
041:        import org.w3c.dom.NodeList;
042:
043:        import com.sun.org.apache.xml.internal.utils.URI;
044:        import com.sun.org.apache.xml.internal.security.signature.XMLSignatureInput;
045:        import com.sun.org.apache.xml.internal.security.utils.XMLUtils;
046:        import com.sun.org.apache.xml.internal.security.utils.resolver.ResourceResolverException;
047:        import com.sun.org.apache.xml.internal.security.utils.resolver.ResourceResolverSpi;
048:        import com.sun.org.apache.xpath.internal.XPathAPI;
049:        import com.sun.xml.wss.impl.MessageConstants;
050:        import com.sun.xml.wss.logging.LogDomainConstants;
051:
052:        /**
053:         * This resolver is used for resolving same-document URIs for eg. URI="#wsuId".
054:         *
055:         * @author Anil Tappetla
056:         */
057:
058:        public class ResolverId extends ResourceResolverSpi {
059:
060:            /* Implementation class name */
061:            private static String implementationClassName = ResolverId.class
062:                    .getName();
063:
064:            protected static final Logger log = Logger.getLogger(
065:                    LogDomainConstants.WSS_API_DOMAIN,
066:                    LogDomainConstants.WSS_API_DOMAIN_BUNDLE);
067:
068:            /**
069:             * Method getResolverName
070:             *
071:             * @return The resolver implementation class name
072:             */
073:            public static String getResolverName() {
074:                return implementationClassName;
075:            }
076:
077:            /**
078:             * Method engineResolve
079:             *
080:             * @param uri
081:             * @param BaseURI
082:             *
083:             * @return XMLSignatureInput
084:             *
085:             * @throws ResourceResolverException
086:             */
087:            public XMLSignatureInput engineResolve(Attr uri, String BaseURI)
088:                    throws ResourceResolverException {
089:                String uriNodeValue = uri.getNodeValue();
090:                if (MessageConstants.debug) {
091:                    log.log(Level.FINEST, "uri = " + uriNodeValue);
092:                }
093:                Document doc = uri.getOwnerDocument();
094:
095:                // this must be done so that Xalan can catch ALL namespaces
096:                XMLUtils.circumventBug2650(doc);
097:
098:                Element selectedElem = null;
099:                if (uriNodeValue.equals("")) {
100:                    selectedElem = doc.getDocumentElement();
101:                } else {
102:                    /*
103:                     * URI="#wsuId"
104:                     * Identifies a node-set containing the element with wsu:Id attribute
105:                     * value 'wsuId' of the XML resource containing the signature.
106:                     * XML Signature (and its applications) modify this node-set to
107:                     * include the element plus all descendents including namespaces and
108:                     * attributes -- but not comments.
109:                     */
110:                    String id = uriNodeValue.substring(1);
111:                    try {
112:                        selectedElem = getElementById(doc, id);
113:                    } catch (TransformerException e) {
114:                        log.log(Level.SEVERE,
115:                                "WSS0603.xpathapi.transformer.exception", e
116:                                        .getMessage());
117:                        throw new ResourceResolverException("empty", e, uri,
118:                                BaseURI);
119:                    }
120:                }
121:
122:                if (selectedElem == null) {
123:                    log.log(Level.SEVERE, "WSS0604.cannot.find.element");
124:                    throw new ResourceResolverException("empty", uri, BaseURI);
125:                }
126:                Set resultSet = dereferenceSameDocumentURI(selectedElem);
127:                XMLSignatureInput result = new XMLSignatureInput(resultSet);
128:
129:                result.setMIMEType("text/xml");
130:
131:                try {
132:                    URI uriNew = new URI(new URI(BaseURI), uri.getNodeValue());
133:                    result.setSourceURI(uriNew.toString());
134:                } catch (URI.MalformedURIException ex) {
135:                    result.setSourceURI(BaseURI);
136:                }
137:
138:                return result;
139:            }
140:
141:            /**
142:             * Method engineCanResolve
143:             *
144:             * @param uri
145:             * @param BaseURI
146:             *
147:             * @return true if uri node can be resolved, false otherwise
148:             */
149:            public boolean engineCanResolve(Attr uri, String BaseURI) {
150:                if (uri == null)
151:                    return false;
152:
153:                String uriNodeValue = uri.getNodeValue();
154:                if (uriNodeValue.startsWith("#"))
155:                    return true;
156:
157:                return false;
158:            }
159:
160:            /**
161:             * Looks up elements with wsu:Id or Id in xenc or dsig namespace
162:             *
163:             * @param doc
164:             * @param id
165:             *
166:             * @return element
167:             *
168:             * @throws TransformerException
169:             */
170:            private Element getElementById(Document doc, String id)
171:                    throws TransformerException {
172:
173:                Element selement = doc.getElementById(id);
174:                if (selement != null) {
175:                    if (MessageConstants.debug) {
176:                        log.log(Level.FINEST,
177:                                "Document.getElementById() returned "
178:                                        + selement);
179:                    }
180:                    return selement;
181:                }
182:
183:                if (MessageConstants.debug) {
184:                    log.log(Level.FINEST,
185:                            "Document.getElementById() FAILED......'" + id
186:                                    + "'");
187:                }
188:
189:                Element nscontext = XMLUtils.createDSctx(doc, "wsu",
190:                        MessageConstants.WSU_NS);
191:                Element element = (Element) XPathAPI.selectSingleNode(doc,
192:                        "//*[@wsu:Id='" + id + "']", nscontext);
193:
194:                if (element == null) {
195:                    NodeList elems = XPathAPI.selectNodeList(doc, "//*[@Id='"
196:                            + id + "']", nscontext);
197:                    for (int i = 0; i < elems.getLength(); i++) {
198:                        Element elem = (Element) elems.item(i);
199:                        String namespace = elem.getNamespaceURI();
200:                        if (namespace.equals(MessageConstants.DSIG_NS)
201:                                || namespace.equals(MessageConstants.XENC_NS)) {
202:                            element = elem;
203:                            break;
204:                        }
205:                    }
206:                }
207:                // look for SAML AssertionID
208:                if (element == null) {
209:
210:                    NodeList assertions = doc
211:                            .getElementsByTagName(MessageConstants.SAML_ASSERTION_LNAME);
212:
213:                    int len = assertions.getLength();
214:                    if (len > 0) {
215:                        for (int i = 0; i < len; i++) {
216:                            Element elem = (Element) assertions.item(i);
217:                            String assertionId = elem
218:                                    .getAttribute(MessageConstants.SAML_ASSERTIONID_LNAME);
219:                            if (id.equals(assertionId)) {
220:                                element = elem;
221:                                break;
222:                            }
223:                        }
224:                    }
225:                }
226:
227:                return element;
228:            }
229:
230:            /**
231:             * Dereferences a same-document URI fragment.
232:             *
233:             * @param node the node referenced by the -
234:             *             URI fragment. If null, returns -
235:             *             an empty set.
236:             * @return 
237:             */
238:            private Set dereferenceSameDocumentURI(Node node) {
239:                Set nodeSet = new HashSet();
240:                if (node != null) {
241:                    nodeSetMinusCommentNodes(node, nodeSet, null);
242:                }
243:                return nodeSet;
244:            }
245:
246:            /**
247:             * Method nodeSetMinusCommentNodes
248:             *
249:             * @param node the node to traverse
250:             * @param nodeSet the set of nodes traversed so far
251:             * @param the previous sibling node
252:             */
253:            private void nodeSetMinusCommentNodes(Node node, Set nodeSet,
254:                    Node prevSibling) {
255:                switch (node.getNodeType()) {
256:                case Node.ELEMENT_NODE:
257:                    NamedNodeMap attrs = node.getAttributes();
258:                    if (attrs != null) {
259:                        for (int i = 0; i < attrs.getLength(); i++) {
260:                            nodeSet.add(attrs.item(i));
261:                        }
262:                    }
263:                    nodeSet.add(node);
264:                    Node pSibling = null;
265:                    for (Node child = node.getFirstChild(); child != null; child = child
266:                            .getNextSibling()) {
267:                        nodeSetMinusCommentNodes(child, nodeSet, pSibling);
268:                        pSibling = child;
269:                    }
270:                    break;
271:                case Node.TEXT_NODE:
272:                case Node.CDATA_SECTION_NODE:
273:                    // emulate XPath which only returns the first node in
274:                    // contiguous text/cdata nodes
275:                    if (prevSibling != null
276:                            && (prevSibling.getNodeType() == Node.TEXT_NODE || prevSibling
277:                                    .getNodeType() == Node.CDATA_SECTION_NODE)) {
278:                        return;
279:                    }
280:                case Node.PROCESSING_INSTRUCTION_NODE:
281:                    nodeSet.add(node);
282:                }
283:            }
284:        }
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