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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.
/**
* 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.ws.security.message.token;
import java.util.Enumeration;
import java.util.Hashtable;
import javax.xml.namespace.QName;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ws.security.WSConstants;
import org.apache.ws.security.WSSecurityException;
import org.apache.ws.security.conversation.ConversationConstants;
import org.apache.ws.security.conversation.ConversationException;
import org.apache.ws.security.util.DOM2Writer;
import org.apache.ws.security.util.WSSecurityUtil;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.Text;
/**
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*/
/**
* @author Ruchith Fernando
* @version 1.0
*/
public class DerivedKeyToken {
private Log log = LogFactory.getLog(DerivedKeyToken.class.getName());
// These are the elements that are used to create the SecurityContextToken
protected Element element = null;
protected Element elementSecurityTokenReference = null;
protected Element elementProperties = null;
protected Element elementGeneration = null;
protected Element elementOffset = null;
protected Element elementLength = null;
protected Element elementLabel = null;
protected Element elementNonce = null;
private String ns;
/**
* This will create an empty DerivedKeyToken
*
* @param doc The DOM document
*/
public DerivedKeyToken(Document doc) throws ConversationException {
this(ConversationConstants.DEFAULT_VERSION, doc);
}
/**
* This will create an empty DerivedKeyToken
*
* @param doc The DOM document
*/
public DerivedKeyToken(int version, Document doc) throws ConversationException {
log.debug("DerivedKeyToken: created");
this.ns = ConversationConstants.getWSCNs(version);
this.element =
doc.createElementNS(ns, "wsc:" + ConversationConstants.DERIVED_KEY_TOKEN_LN);
WSSecurityUtil.setNamespace(this.element, ns, ConversationConstants.WSC_PREFIX);
}
/**
* This will create a DerivedKeyToken object with the given DerivedKeyToken element
*
* @param elem The DerivedKeyToken DOM element
* @throws WSSecurityException If the element is not a derived key token
*/
public DerivedKeyToken(Element elem) throws WSSecurityException {
log.debug("DerivedKeyToken: created : element constructor");
this.element = elem;
QName el =
new QName(this.element.getNamespaceURI(), this.element.getLocalName());
if (!(el.equals(ConversationConstants.DERIVED_KEY_TOKEN_QNAME_05_02) ||
el.equals(ConversationConstants.DERIVED_KEY_TOKEN_QNAME_05_12))) {
throw new WSSecurityException(
WSSecurityException.INVALID_SECURITY_TOKEN,
"badTokenType00",
new Object[]{el}
);
}
this.elementSecurityTokenReference =
(Element) WSSecurityUtil.getDirectChild(
this.element,
ConversationConstants.SECURITY_TOKEN_REFERENCE_LN,
WSConstants.WSSE_NS
);
this.ns = el.getNamespaceURI();
this.elementProperties =
(Element) WSSecurityUtil.getDirectChild(
this.element, ConversationConstants.PROPERTIES_LN, this.ns
);
this.elementGeneration =
(Element) WSSecurityUtil.getDirectChild(
this.element, ConversationConstants.GENERATION_LN, this.ns
);
this.elementOffset =
(Element) WSSecurityUtil.getDirectChild(
this.element, ConversationConstants.OFFSET_LN, this.ns
);
this.elementLength =
(Element) WSSecurityUtil.getDirectChild(
this.element, ConversationConstants.LENGTH_LN, this.ns
);
this.elementLabel =
(Element) WSSecurityUtil.getDirectChild(
this.element, ConversationConstants.LABEL_LN, this.ns
);
this.elementNonce =
(Element) WSSecurityUtil.getDirectChild(
this.element, ConversationConstants.NONCE_LN, this.ns
);
}
/**
* Sets the security token reference of the derived key token
* This is the reference to the shared secret used in the conversation/context
*
* @param ref Security token reference
*/
public void setSecurityTokenReference(SecurityTokenReference ref) {
this.elementSecurityTokenReference = ref.getElement();
WSSecurityUtil.prependChildElement(this.element, ref.getElement());
}
/**
* Sets the security token reference of the derived key token
* This is the reference to the shared secret used in the conversation/context
*
* @param ref Security token reference
* @deprecated use setSecurityTokenReference(SecurityTokenReference ref) instead
*/
public void setSecuityTokenReference(SecurityTokenReference ref) {
setSecurityTokenReference(ref);
}
public void setSecurityTokenReference(Element elem) {
this.elementSecurityTokenReference = elem;
WSSecurityUtil.prependChildElement(this.element, elem);
}
/**
* @deprecated use setSecurityTokenReference(Element elem) instead
*/
public void setSecuityTokenReference(Element elem) {
setSecurityTokenReference(elem);
}
/**
* Returns the SecurityTokenReference of the derived key token
*
* @return the Security Token Reference of the derived key token
* @throws WSSecurityException
*/
public SecurityTokenReference getSecurityTokenReference() throws WSSecurityException {
if (this.elementSecurityTokenReference != null) {
return new SecurityTokenReference(this.elementSecurityTokenReference);
}
return null;
}
/**
* Returns the SecurityTokenReference of the derived key token
*
* @return the Security Token Reference of the derived key token
* @throws WSSecurityException
* @deprecated use getSecurityTokenReference() instead
*/
public SecurityTokenReference getSecuityTokenReference() throws WSSecurityException {
return getSecurityTokenReference();
}
//Write the getter for security token reference
/**
* This adds a property into
* /DerivedKeyToken/Properties
*
* @param propName Name of the property
* @param propValue Value of the property
*/
private void addProperty(String propName, String propValue) {
if (this.elementProperties == null) { //Create the properties element if it is not there
this.elementProperties =
this.element.getOwnerDocument().createElementNS(
this.ns, "wsc:" + ConversationConstants.PROPERTIES_LN
);
this.element.appendChild(this.elementProperties);
}
Element tempElement =
this.element.getOwnerDocument().createElementNS(this.ns, "wsc:" + propName);
tempElement.appendChild(this.element.getOwnerDocument().createTextNode(propValue));
this.elementProperties.appendChild(tempElement);
}
/**
* This is used to set the Name, Label and Nonce element values in the properties element
* At this point I'm not sure if these are the only properties that will appear in the
* Properties element. There fore this method is provided
* If this is not required feel free to remove this :D
*
*
* @param name Value of the Properties/Name element
* @param label Value of the Properties/Label element
* @param nonce Value of the Properties/Nonce element
*/
public void setProperties(String name, String label, String nonce) {
Hashtable table = new Hashtable(3);
table.put("Name", name);
table.put("Label", label);
table.put("Nonce", nonce);
this.setProperties(table);
}
/**
* If there are other types of properties other than Name, Label and Nonce
* This is provided for extensibility purposes
*
* @param properties The properties and values in a hashtable
*/
public void setProperties(Hashtable properties) {
Enumeration keys = properties.keys();
while (keys.hasMoreElements()) {
String propertyName = (String) keys.nextElement(); //Get the property name
//Check whether this property is already there
//If so change the value
Node node =
WSSecurityUtil.findElement(this.elementProperties, propertyName, this.ns);
if (node instanceof Element) { //If the node is not null
Text node1 = getFirstNode((Element) node);
node1.setData((String) properties.get(propertyName));
} else {
this.addProperty(propertyName, (String) properties.get(propertyName));
}
}
}
public Hashtable getProperties() {
if (this.elementProperties != null) {
Hashtable table = new Hashtable();
NodeList nodes = this.elementProperties.getChildNodes();
for (int i = 0; i < nodes.getLength(); i++) {
Node tempNode = nodes.item(i);
if (tempNode instanceof Element) {
Text text = this.getFirstNode((Element) tempNode);
table.put(tempNode.getNodeName(), text.getData());
}
}
}
return null;
}
/**
* Sets the length of the derived key
*
* @param length The length of the derived key as a long
*/
public void setLength(int length) {
this.elementLength =
this.element.getOwnerDocument().createElementNS(
this.ns, "wsc:" + ConversationConstants.LENGTH_LN
);
this.elementLength.appendChild(
this.element.getOwnerDocument().createTextNode(Long.toString(length))
);
this.element.appendChild(this.elementLength);
}
public int getLength() {
if (this.elementLength != null) {
return Integer.parseInt(getFirstNode(this.elementLength).getData());
}
return -1;
}
/**
* Sets the offset
*
* @param offset The offset value as an integer
*/
public void setOffset(int offset) throws ConversationException {
//This element MUST NOT be used if the element is specified
if (this.elementGeneration == null) {
this.elementOffset =
this.element.getOwnerDocument().createElementNS(
this.ns, "wsc:" + ConversationConstants.OFFSET_LN
);
this.elementOffset.appendChild(
this.element.getOwnerDocument().createTextNode(Integer.toString(offset))
);
this.element.appendChild(this.elementOffset);
} else {
throw new ConversationException(
"Offset cannot be set along with generation - generation is already set"
);
}
}
public int getOffset() {
if (this.elementOffset != null) {
return Integer.parseInt(getFirstNode(this.elementOffset).getData());
}
return -1;
}
/**
* Sets the generation of the derived key
*
* @param generation generation value as an integer
*/
public void setGeneration(int generation) throws
ConversationException {
//This element MUST NOT be used if the element is specified
if (this.elementOffset == null) {
this.elementGeneration =
this.element.getOwnerDocument().createElementNS(
this.ns, "wsc:" + ConversationConstants.GENERATION_LN
);
this.elementGeneration.appendChild(
this.element.getOwnerDocument().createTextNode(Integer.toString(generation))
);
this.element.appendChild(this.elementGeneration);
} else {
throw new ConversationException(
"Generation cannot be set along with offset - Offset is already set"
);
}
}
public int getGeneration() {
if (this.elementGeneration != null) {
return Integer.parseInt(getFirstNode(this.elementGeneration).getData());
}
return -1;
}
/**
* Sets the label of the derived key
*
* @param label Label value as a string
*/
public void setLabel(String label) {
this.elementLabel =
this.element.getOwnerDocument().createElementNS(
this.ns, "wsc:" + ConversationConstants.LABEL_LN
);
this.elementLabel.appendChild(this.element.getOwnerDocument().createTextNode(label));
this.element.appendChild(this.elementLabel);
}
/**
* Sets the nonce value of the derived key
*
* @param nonce Nonce value as a string
*/
public void setNonce(String nonce) {
this.elementNonce =
this.element.getOwnerDocument().createElementNS(
this.ns, "wsc:" + ConversationConstants.NONCE_LN
);
this.elementNonce.appendChild(this.element.getOwnerDocument().createTextNode(nonce));
this.element.appendChild(this.elementNonce);
}
/**
* Returns the label of the derived key token
*
* @return Label of the derived key token
*/
public String getLabel() {
if (this.elementLabel != null) {
return getFirstNode(this.elementLabel).getData();
}
return null;
}
/**
* Return the nonce of the derived key token
*
* @return Nonce of the derived key token
*/
public String getNonce() {
if (this.elementNonce != null) {
return getFirstNode(this.elementNonce).getData();
}
return null;
}
/**
* Returns the first text node of an element.
*
* @param e the element to get the node from
* @return the first text node or null if node
* is null or is not a text node
*/
private Text getFirstNode(Element e) {
Node node = e.getFirstChild();
return (node instanceof Text) ? (Text) node : null;
}
/**
* Returns the dom element of this SecurityContextToken object.
*
* @return the DerivedKeyToken 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);
}
/**
* Gets the id.
*
* @return the value of the wsu:Id attribute of this
* DerivedKeyToken
*/
public String getID() {
return this.element.getAttributeNS(WSConstants.WSU_NS, "Id");
}
/**
* Set the id of this derived key token.
*
* @param id the value for the wsu:Id attribute of this
* DerivedKeyToken
*/
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);
}
/**
* Gets the derivation algorithm
*
* @return the value of the wsc:Algorithm attribute of this
* DerivedKeyToken
*/
public String getAlgorithm() {
String algo = this.element.getAttributeNS(this.ns, "Algorithm");
if (algo == null || algo.equals("")) {
return ConversationConstants.DerivationAlgorithm.P_SHA_1;
} else {
return algo;
}
}
/**
* Set the derivation algorithm of this derived key token.
*
* @param algo the value for the Algorithm attribute of this
* DerivedKeyToken
*/
public void setAlgorithm(String algo) {
this.element.setAttributeNS(this.ns, "Algorithm", algo);
}
}