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The Apache WSS4J project provides a Java implementation of the primary security standards
for Web Services, namely the OASIS Web Services Security (WS-Security) specifications
from the OASIS Web Services Security TC.
/*
* Copyright 2003-2004 The Apache Software Foundation.
*
* Licensed 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.ws.security.message.token;
import org.apache.ws.security.WSConstants;
import org.apache.ws.security.WSSecurityException;
import org.apache.ws.security.util.DOM2Writer;
import org.apache.ws.security.util.WSSecurityUtil;
import org.apache.ws.security.util.XmlSchemaDateFormat;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.Text;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.text.DateFormat;
import java.util.Calendar;
import java.util.TimeZone;
import java.util.Date;
import java.util.Vector;
/**
* Timestamp according to SOAP Message Security 1.0,
* chapter 10 / appendix A.2
*
*
* @author Christof Soehngen ([email protected])
*/
public class Timestamp {
protected Element element = null;
protected Vector customElements = null;
protected Calendar created;
protected Calendar expires;
/**
* Constructs a Timestamp object and parses the
* wsu:Timestamp element to initialize it.
*
* @param element the wsu:Timestamp element that
* contains the timestamp data
*/
public Timestamp(Element element) throws WSSecurityException {
this.element = element;
customElements = new Vector();
String strCreated = null;
String strExpires = null;
for (Node currentChild = element.getFirstChild();
currentChild != null;
currentChild = currentChild.getNextSibling()) {
if (currentChild instanceof Element) {
if (WSConstants.CREATED_LN.equals(currentChild.getLocalName()) &&
WSConstants.WSU_NS.equals(currentChild.getNamespaceURI())) {
if (strCreated == null) {
strCreated = ((Text) ((Element) currentChild).getFirstChild()).getData();
}
else {
throw new WSSecurityException(WSSecurityException.INVALID_SECURITY,
"invalidTimestamp");
}
} else if (WSConstants.EXPIRES_LN.equals(currentChild.getLocalName()) &&
WSConstants.WSU_NS.equals(currentChild.getNamespaceURI())) {
if (strExpires == null) {
strExpires = ((Text) ((Element) currentChild).getFirstChild()).getData();
}
else {
throw new WSSecurityException(WSSecurityException.INVALID_SECURITY,
"invalidTimestamp");
}
} else {
customElements.add((Element) currentChild);
}
}
}
DateFormat zulu = new XmlSchemaDateFormat();;
try {
if (strCreated != null) {
created = Calendar.getInstance();
created.setTime(zulu.parse(strCreated));
}
if (strExpires != null) {
expires = Calendar.getInstance();
expires.setTime(zulu.parse(strExpires));
}
} catch (ParseException e) {
throw new WSSecurityException(WSSecurityException.INVALID_SECURITY,
"invalidTimestamp",
null, e);
}
}
/**
* Constructs a Timestamp object according
* to the defined parameters.
*
*
* @param doc the SOAP envelope as Document
* @param ttl the time to live (validity of the security semantics) in seconds
*/
public Timestamp(boolean milliseconds, Document doc, int ttl) {
customElements = new Vector();
element =
doc.createElementNS(WSConstants.WSU_NS,
WSConstants.WSU_PREFIX
+ ":"
+ WSConstants.TIMESTAMP_TOKEN_LN);
WSSecurityUtil.setNamespace(element,
WSConstants.WSU_NS,
WSConstants.WSU_PREFIX);
DateFormat zulu = null;
if (milliseconds) {
zulu = new XmlSchemaDateFormat();
}
else {
zulu = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
zulu.setTimeZone(TimeZone.getTimeZone("UTC"));
}
created = getCurrentTime();
Element elementCreated =
doc.createElementNS(WSConstants.WSU_NS,
WSConstants.WSU_PREFIX + ":" + WSConstants.CREATED_LN);
WSSecurityUtil.setNamespace(elementCreated,
WSConstants.WSU_NS,
WSConstants.WSU_PREFIX);
elementCreated.appendChild(doc.createTextNode(zulu.format(created.getTime())));
element.appendChild(elementCreated);
if (ttl != 0) {
long currentTime = created.getTimeInMillis();
currentTime += ttl * 1000;
expires = getCurrentTime();
expires.setTimeInMillis(currentTime);
Element elementExpires =
doc.createElementNS(WSConstants.WSU_NS,
WSConstants.WSU_PREFIX + ":" + WSConstants.EXPIRES_LN);
WSSecurityUtil.setNamespace(elementExpires,
WSConstants.WSU_NS,
WSConstants.WSU_PREFIX);
elementExpires.appendChild(doc.createTextNode(zulu.format(expires.getTime())));
element.appendChild(elementExpires);
}
}
/**
* Get the current time
*
* @return calendar the current time
*/
protected Calendar getCurrentTime() {
return Calendar.getInstance();
}
/**
* Returns the dom element of this Timestamp object.
*
* @return the wsse:UsernameToken element
*/
public Element getElement() {
return this.element;
}
/**
* Returns the string representation of the token.
*
* @return a XML string representation
*/
public String toString() {
return DOM2Writer.nodeToString((Node) this.element);
}
/**
* Get the time of creation.
*
*
* @return the "created" time
*/
public Calendar getCreated() {
return created;
}
/**
* Get the time of expiration.
*
*
* @return the "expires" time
*/
public Calendar getExpires() {
return expires;
}
/**
* Creates and adds a custom element to this Timestamp
*/
public void addCustomElement(Document doc, Element customElement) {
customElements.add(customElement);
element.appendChild(customElement);
}
/**
* Get the the custom elements from this Timestamp
*
* @return the vector containing the custom elements.
*/
public Vector getCustomElements() {
return this.customElements;
}
/**
* Set wsu:Id attribute of this timestamp
* @param id
*/
public void setID(String id) {
String prefix = WSSecurityUtil.setNamespace(this.element,
WSConstants.WSU_NS, WSConstants.WSU_PREFIX);
this.element.setAttributeNS(WSConstants.WSU_NS, prefix + ":Id", id);
}
/**
* Returns the value of the wsu:Id attribute
* @return TODO
*/
public String getID() {
return this.element.getAttributeNS(WSConstants.WSU_NS, "Id");
}
}