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/**
* 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.wss4j.dom.util;
import org.apache.wss4j.dom.SOAP11Constants;
import org.apache.wss4j.dom.SOAP12Constants;
import org.apache.wss4j.dom.SOAPConstants;
import org.apache.wss4j.dom.WSConstants;
import org.apache.wss4j.dom.callback.CallbackLookup;
import org.apache.wss4j.dom.engine.WSSConfig;
import org.apache.wss4j.common.WSEncryptionPart;
import org.apache.wss4j.common.ext.WSSecurityException;
import org.apache.wss4j.common.util.AttachmentUtils;
import org.apache.wss4j.common.util.XMLUtils;
import org.apache.wss4j.dom.handler.HandlerAction;
import org.apache.wss4j.dom.handler.RequestData;
import org.apache.wss4j.dom.handler.WSHandlerConstants;
import org.apache.xml.security.stax.ext.XMLSecurityConstants;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.Text;
//import com.sun.xml.internal.messaging.saaj.soap.SOAPDocumentImpl;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.security.auth.callback.CallbackHandler;
/**
* WS-Security Utility methods.
*/
public final class WSSecurityUtil {
private static boolean isSAAJ14 = false;
private static final org.slf4j.Logger LOG =
org.slf4j.LoggerFactory.getLogger(WSSecurityUtil.class);
private static final ClassValue GET_DOM_ELEMENTS_METHODS = new ClassValue() {
@Override
protected Method computeValue(Class type) {
try {
return getMethod(type, "getDomElement");
} catch (NoSuchMethodException e) {
//best effort to try, do nothing if NoSuchMethodException
return null;
}
}
};
private static final ClassValue GET_ENVELOPE_METHODS = new ClassValue() {
@Override
protected Method computeValue(Class type) {
try {
return getMethod(type, "getEnvelope");
} catch (NoSuchMethodException e) {
//best effort to try, do nothing if NoSuchMethodException
return null;
}
}
};
static {
try {
Method[] methods = WSSecurityUtil.class.getClassLoader().
loadClass("com.sun.xml.messaging.saaj.soap.SOAPDocumentImpl").getMethods();
for (Method method : methods) {
if (method.getName().equals("register")) {
//this is the 1.4+ SAAJ impl
isSAAJ14 = true;
break;
}
}
} catch (ClassNotFoundException cnfe) {
LOG.debug("Can't load class com.sun.xml.messaging.saaj.soap.SOAPDocumentImpl", cnfe);
try {
Method[] methods = WSSecurityUtil.class.getClassLoader().
loadClass("com.sun.xml.internal.messaging.saaj.soap.SOAPDocumentImpl").getMethods();
for (Method method : methods) {
if (method.getName().equals("register")) {
//this is the SAAJ impl in JDK9
isSAAJ14 = true;
break;
}
}
} catch (ClassNotFoundException cnfe1) {
LOG.debug("can't load class com.sun.xml.internal.messaging.saaj.soap.SOAPDocumentImpl", cnfe1);
}
}
}
private WSSecurityUtil() {
// Complete
}
private static Method getMethod(final Class clazz, final String name,
final Class... parameterTypes) throws NoSuchMethodException {
try {
return AccessController.doPrivileged(new PrivilegedExceptionAction() {
public Method run() throws Exception {
return clazz.getMethod(name, parameterTypes);
}
});
} catch (PrivilegedActionException pae) {
Exception e = pae.getException();
if (e instanceof NoSuchMethodException) {
throw (NoSuchMethodException)e;
}
throw new SecurityException(e);
}
}
private static T setAccessible(final T o) {
return AccessController.doPrivileged(new PrivilegedAction() {
public T run() {
o.setAccessible(true);
return o;
}
});
}
public static Element getSOAPHeader(Document doc) {
String soapNamespace = WSSecurityUtil.getSOAPNamespace(doc.getDocumentElement());
return
XMLUtils.getDirectChildElement(
doc.getDocumentElement(), WSConstants.ELEM_HEADER, soapNamespace
);
}
/**
* Returns the first WS-Security header element for a given actor. Only one
* WS-Security header is allowed for an actor.
*
* @param doc
* @param actor
* @return the wsse:Security element or null
* if not such element found
*/
public static Element getSecurityHeader(Document doc, String actor) throws WSSecurityException {
Element soapHeaderElement = getSOAPHeader(doc);
if (soapHeaderElement == null) { // no SOAP header at all
return null;
}
String soapNamespace = WSSecurityUtil.getSOAPNamespace(doc.getDocumentElement());
return getSecurityHeader(soapHeaderElement, actor, WSConstants.URI_SOAP12_ENV.equals(soapNamespace));
}
/**
* Returns the first WS-Security header element for a given actor. Only one
* WS-Security header is allowed for an actor.
*/
public static Element getSecurityHeader(Element soapHeader, String actor, boolean soap12)
throws WSSecurityException {
String actorLocal = WSConstants.ATTR_ACTOR;
String soapNamespace = WSConstants.URI_SOAP11_ENV;
if (soap12) {
actorLocal = WSConstants.ATTR_ROLE;
soapNamespace = WSConstants.URI_SOAP12_ENV;
}
//
// Iterate through the security headers
//
Element foundSecurityHeader = null;
for (
Node currentChild = soapHeader.getFirstChild();
currentChild != null;
currentChild = currentChild.getNextSibling()
) {
if (Node.ELEMENT_NODE == currentChild.getNodeType()
&& WSConstants.WSSE_LN.equals(currentChild.getLocalName())
&& (WSConstants.WSSE_NS.equals(currentChild.getNamespaceURI())
|| WSConstants.OLD_WSSE_NS.equals(currentChild.getNamespaceURI()))) {
Element elem = (Element)currentChild;
Attr attr = elem.getAttributeNodeNS(soapNamespace, actorLocal);
String hActor = (attr != null) ? attr.getValue() : null;
if (WSSecurityUtil.isActorEqual(actor, hActor)) {
if (foundSecurityHeader != null) {
LOG.debug(
"Two or more security headers have the same actor name: {}", actor
);
throw new WSSecurityException(WSSecurityException.ErrorCode.INVALID_SECURITY);
}
foundSecurityHeader = elem;
}
}
}
return foundSecurityHeader;
}
/**
* Compares two actor strings and returns true if these are equal. Takes
* care of the null length strings and uses ignore case.
*
* @param actor
* @param hActor
* @return true is the actor arguments are equal
*/
public static boolean isActorEqual(String actor, String hActor) {
if ((hActor == null || hActor.length() == 0)
&& (actor == null || actor.length() == 0)) {
return true;
}
if (hActor != null && actor != null && hActor.equalsIgnoreCase(actor)) {
return true;
}
return false;
}
/**
* Gets all direct children with specified localname and namespace.
*
* @param fNode the node where to start the search
* @param localName local name of the children to get
* @param namespace the namespace of the children to get
* @return the list of nodes or null if not such nodes are found
*/
public static List getDirectChildElements(
Node fNode,
String localName,
String namespace
) {
List children = new ArrayList<>();
for (
Node currentChild = fNode.getFirstChild();
currentChild != null;
currentChild = currentChild.getNextSibling()
) {
if (Node.ELEMENT_NODE == currentChild.getNodeType()
&& localName.equals(currentChild.getLocalName())
&& namespace.equals(currentChild.getNamespaceURI())) {
children.add((Element)currentChild);
}
}
return children;
}
/**
* return the first soap "Body" element.
*
* @param doc
* @return the body element or null if document does not
* contain a SOAP body
*/
public static Element findBodyElement(Document doc) {
Element docElement = doc.getDocumentElement();
String ns = docElement.getNamespaceURI();
return XMLUtils.getDirectChildElement(docElement, WSConstants.ELEM_BODY, ns);
}
/**
* Find the DOM Element in the SOAP Envelope that is referenced by the
* WSEncryptionPart argument. The "Id" is used before the Element localname/namespace.
*
* @param part The WSEncryptionPart object corresponding to the DOM Element(s) we want
* @param callbackLookup The CallbackLookup object used to find Elements
* @param doc The owning document
* @return the DOM Element in the SOAP Envelope that is found
*/
public static List findElements(
WSEncryptionPart part, CallbackLookup callbackLookup, Document doc
) throws WSSecurityException {
// See if the DOM Element is stored in the WSEncryptionPart first
if (part.getElement() != null) {
return Collections.singletonList(part.getElement());
}
// Next try to find the Element via its wsu:Id
String id = part.getId();
if (id != null) {
Element foundElement = callbackLookup.getElement(id, null, false);
return Collections.singletonList(foundElement);
}
// Otherwise just lookup all elements with the localname/namespace
return callbackLookup.getElements(part.getName(), part.getNamespace());
}
/**
* Get the default encryption part - the SOAP Body of type "Content".
*/
public static WSEncryptionPart getDefaultEncryptionPart(Document doc) {
String soapNamespace =
WSSecurityUtil.getSOAPNamespace(doc.getDocumentElement());
return new WSEncryptionPart(WSConstants.ELEM_BODY, soapNamespace, "Content");
}
/**
* create a new element in the same namespace
*
* @param parent for the new element
* @param localName of the new element
* @return the new element
*/
private static Element createElementInSameNamespace(Node parent, String localName) {
String qName = localName;
String prefix = parent.getPrefix();
if (prefix != null && prefix.length() > 0) {
qName = prefix + ":" + localName;
}
String nsUri = parent.getNamespaceURI();
return parent.getOwnerDocument().createElementNS(nsUri, qName);
}
/**
* prepend a child element
*
* @param parent element of this child element
* @param child the element to append
* @return the child element
*/
public static Element prependChildElement(
Element parent,
Element child
) {
Node firstChild = parent.getFirstChild();
Element domChild = null;
try {
domChild = (Element)getDomElement(child);
} catch (WSSecurityException e) {
LOG.debug("Error when try to get Dom Element from the child", e);
}
if (firstChild == null) {
return (Element)parent.appendChild(domChild);
} else {
return (Element)parent.insertBefore(domChild, firstChild);
}
}
/**
* find the first ws-security header block
*
* @param doc the DOM document (SOAP request)
* @param envelope the SOAP envelope
* @param doCreate if true create a new WSS header block if none exists
* @return the WSS header or null if none found and doCreate is false
*/
public static Element findWsseSecurityHeaderBlock(
Document doc,
Element envelope,
boolean doCreate
) throws WSSecurityException {
return findWsseSecurityHeaderBlock(doc, envelope, null, doCreate);
}
/**
* find a WS-Security header block for a given actor
*
* @param doc the DOM document (SOAP request)
* @param envelope the SOAP envelope
* @param actor the actor (role) name of the WSS header
* @param doCreate if true create a new WSS header block if none exists
* @return the WSS header or null if none found and doCreate is false
*/
public static Element findWsseSecurityHeaderBlock(
Document doc,
Element envelope,
String actor,
boolean doCreate
) throws WSSecurityException {
String soapNamespace = WSSecurityUtil.getSOAPNamespace(doc.getDocumentElement());
Element header =
XMLUtils.getDirectChildElement(
doc.getDocumentElement(),
WSConstants.ELEM_HEADER,
soapNamespace
);
if (header == null) { // no SOAP header at all
if (doCreate) {
if (isSAAJ14) {
try {
Node node = null;
Method method = GET_ENVELOPE_METHODS.get(doc.getClass());
if (method != null) {
try {
node = (Node)setAccessible(method).invoke(doc);
} catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
throw new WSSecurityException(WSSecurityException.ErrorCode.INVALID_SECURITY);
}
}
if (node != null) {
header = createElementInSameNamespace(node, WSConstants.ELEM_HEADER);
} else {
header = createElementInSameNamespace(doc.getDocumentElement(), WSConstants.ELEM_HEADER);
}
header = (Element)doc.importNode(header, true);
header = (Element)getDomElement(header);
header = prependChildElement(envelope, header);
} catch (Exception e) {
throw new WSSecurityException(WSSecurityException.ErrorCode.INVALID_SECURITY);
}
} else {
header = createElementInSameNamespace(envelope, WSConstants.ELEM_HEADER);
header = prependChildElement(envelope, header);
}
} else {
return null;
}
}
String actorLocal = WSConstants.ATTR_ACTOR;
if (WSConstants.URI_SOAP12_ENV.equals(soapNamespace)) {
actorLocal = WSConstants.ATTR_ROLE;
}
//
// Iterate through the security headers
//
Element foundSecurityHeader = null;
for (
Node currentChild = header.getFirstChild();
currentChild != null;
currentChild = currentChild.getNextSibling()
) {
if (Node.ELEMENT_NODE == currentChild.getNodeType()
&& WSConstants.WSSE_LN.equals(currentChild.getLocalName())
&& WSConstants.WSSE_NS.equals(currentChild.getNamespaceURI())) {
Element elem = (Element)currentChild;
Attr attr = elem.getAttributeNodeNS(soapNamespace, actorLocal);
String hActor = (attr != null) ? attr.getValue() : null;
if (WSSecurityUtil.isActorEqual(actor, hActor)) {
if (foundSecurityHeader != null) {
LOG.debug(
"Two or more security headers have the same actor name: {}", actor
);
throw new WSSecurityException(WSSecurityException.ErrorCode.INVALID_SECURITY);
}
foundSecurityHeader = elem;
}
}
}
if (foundSecurityHeader != null) {
return foundSecurityHeader;
} else if (doCreate) {
foundSecurityHeader = doc.createElementNS(WSConstants.WSSE_NS, "wsse:Security");
foundSecurityHeader.setAttributeNS(WSConstants.XMLNS_NS, "xmlns:wsse", WSConstants.WSSE_NS);
foundSecurityHeader = (Element)doc.importNode(foundSecurityHeader, true);
foundSecurityHeader = (Element)getDomElement(foundSecurityHeader);
return prependChildElement(header, foundSecurityHeader);
}
return null;
}
/**
* create a base64 test node
*
* @param doc the DOM document (SOAP request)
* @param data to encode
* @return a Text node containing the base64 encoded data
*/
public static Text createBase64EncodedTextNode(Document doc, byte[] data) {
return doc.createTextNode(org.apache.xml.security.utils.XMLUtils.encodeToString(data));
}
public static SOAPConstants getSOAPConstants(Element startElement) {
Document doc = startElement.getOwnerDocument();
String ns = doc.getDocumentElement().getNamespaceURI();
if (WSConstants.URI_SOAP12_ENV.equals(ns)) {
return new SOAP12Constants();
}
return new SOAP11Constants();
}
public static String getSOAPNamespace(Element startElement) {
return getSOAPConstants(startElement).getEnvelopeURI();
}
public static List decodeAction(String action) throws WSSecurityException {
String actionToParse = action;
if (actionToParse == null) {
return Collections.emptyList();
}
actionToParse = actionToParse.trim();
if (actionToParse.length() == 0) {
return Collections.emptyList();
}
List actions = new ArrayList<>();
String[] single = actionToParse.split("\\s");
for (String parsedAction : single) {
if (parsedAction.equals(WSHandlerConstants.NO_SECURITY)) {
return Collections.emptyList();
} else if (parsedAction.equals(WSHandlerConstants.USERNAME_TOKEN)) {
actions.add(WSConstants.UT);
} else if (parsedAction.equals(WSHandlerConstants.USERNAME_TOKEN_NO_PASSWORD)) {
actions.add(WSConstants.UT_NOPASSWORD);
} else if (parsedAction.equals(WSHandlerConstants.SIGNATURE)) {
actions.add(WSConstants.SIGN);
} else if (parsedAction.equals(WSHandlerConstants.SIGNATURE_DERIVED)) {
actions.add(WSConstants.DKT_SIGN);
} else if (parsedAction.equals(WSHandlerConstants.ENCRYPT)
|| parsedAction.equals(WSHandlerConstants.ENCRYPTION)) {
actions.add(WSConstants.ENCR);
} else if (parsedAction.equals(WSHandlerConstants.ENCRYPT_DERIVED)
|| parsedAction.equals(WSHandlerConstants.ENCRYPTION_DERIVED)) {
actions.add(WSConstants.DKT_ENCR);
} else if (parsedAction.equals(WSHandlerConstants.SAML_TOKEN_UNSIGNED)) {
actions.add(WSConstants.ST_UNSIGNED);
} else if (parsedAction.equals(WSHandlerConstants.SAML_TOKEN_SIGNED)) {
actions.add(WSConstants.ST_SIGNED);
} else if (parsedAction.equals(WSHandlerConstants.TIMESTAMP)) {
actions.add(WSConstants.TS);
} else if (parsedAction.equals(WSHandlerConstants.USERNAME_TOKEN_SIGNATURE)) {
actions.add(WSConstants.UT_SIGN);
} else if (parsedAction.equals(WSHandlerConstants.ENABLE_SIGNATURE_CONFIRMATION)) {
actions.add(WSConstants.SC);
} else if (parsedAction.equals(WSHandlerConstants.CUSTOM_TOKEN)) {
actions.add(WSConstants.CUSTOM_TOKEN);
} else {
throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE, "empty",
new Object[] {"Unknown action defined: " + parsedAction}
);
}
}
return actions;
}
/**
* Decode an action String. This method should only be called on the outbound side.
* @param action The initial String of actions to perform
* @param wssConfig This object holds the list of custom actions to be performed.
* @return The list of HandlerAction Objects
* @throws WSSecurityException
*/
public static List decodeHandlerAction(
String action,
WSSConfig wssConfig
) throws WSSecurityException {
if (action == null) {
return Collections.emptyList();
}
List actions = new ArrayList<>();
String[] single = action.split(" ");
for (String parsedAction : single) {
if (parsedAction.equals(WSHandlerConstants.NO_SECURITY)) {
return actions;
} else if (parsedAction.equals(WSHandlerConstants.USERNAME_TOKEN)) {
actions.add(new HandlerAction(WSConstants.UT));
} else if (parsedAction.equals(WSHandlerConstants.USERNAME_TOKEN_NO_PASSWORD)) {
actions.add(new HandlerAction(WSConstants.UT_NOPASSWORD));
} else if (parsedAction.equals(WSHandlerConstants.SIGNATURE)) {
actions.add(new HandlerAction(WSConstants.SIGN));
} else if (parsedAction.equals(WSHandlerConstants.SIGNATURE_DERIVED)) {
actions.add(new HandlerAction(WSConstants.DKT_SIGN));
} else if (parsedAction.equals(WSHandlerConstants.ENCRYPT)
|| parsedAction.equals(WSHandlerConstants.ENCRYPTION)) {
actions.add(new HandlerAction(WSConstants.ENCR));
} else if (parsedAction.equals(WSHandlerConstants.ENCRYPT_DERIVED)
|| parsedAction.equals(WSHandlerConstants.ENCRYPTION_DERIVED)) {
actions.add(new HandlerAction(WSConstants.DKT_ENCR));
} else if (parsedAction.equals(WSHandlerConstants.SAML_TOKEN_UNSIGNED)) {
actions.add(new HandlerAction(WSConstants.ST_UNSIGNED));
} else if (parsedAction.equals(WSHandlerConstants.SAML_TOKEN_SIGNED)) {
actions.add(new HandlerAction(WSConstants.ST_SIGNED));
} else if (parsedAction.equals(WSHandlerConstants.TIMESTAMP)) {
actions.add(new HandlerAction(WSConstants.TS));
} else if (parsedAction.equals(WSHandlerConstants.USERNAME_TOKEN_SIGNATURE)) {
actions.add(new HandlerAction(WSConstants.UT_SIGN));
} else if (parsedAction.equals(WSHandlerConstants.ENABLE_SIGNATURE_CONFIRMATION)) {
actions.add(new HandlerAction(WSConstants.SC));
} else if (parsedAction.equals(WSHandlerConstants.CUSTOM_TOKEN)) {
actions.add(new HandlerAction(WSConstants.CUSTOM_TOKEN));
} else {
try {
int customAction = Integer.parseInt(parsedAction);
if (wssConfig == null || wssConfig.getAction(customAction) == null) {
throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE, "empty",
new Object[] {"Unknown action defined: " + parsedAction}
);
}
actions.add(new HandlerAction(customAction));
} catch (NumberFormatException ex) {
throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE, "empty",
new Object[] {"Unknown action defined: " + parsedAction}
);
}
}
}
return actions;
}
/**
* Generate a nonce of the given length using the SHA1PRNG algorithm. The SecureRandom
* instance that backs this method is cached for efficiency.
*
* @return a nonce of the given length
* @throws WSSecurityException
*/
public static byte[] generateNonce(int length) throws WSSecurityException {
try {
return XMLSecurityConstants.generateBytes(length);
} catch (Exception ex) {
throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE, ex,
"empty", new Object[] {"Error in generating nonce of length " + length}
);
}
}
public static void inlineAttachments(List includeElements,
CallbackHandler attachmentCallbackHandler,
boolean removeAttachments) throws WSSecurityException {
for (Element includeElement : includeElements) {
String xopURI = includeElement.getAttributeNS(null, "href");
if (xopURI != null) {
// Retrieve the attachment bytes
byte[] attachmentBytes =
WSSecurityUtil.getBytesFromAttachment(xopURI, attachmentCallbackHandler, removeAttachments);
String encodedBytes = org.apache.xml.security.utils.XMLUtils.encodeToString(attachmentBytes);
Node encodedChild =
includeElement.getOwnerDocument().createTextNode(encodedBytes);
includeElement.getParentNode().replaceChild(encodedChild, includeElement);
}
}
}
/**
* Register the javax.xml.soap.Node with new Cloned Dom Node with java9
* @param doc The SOAPDocumentImpl
* @param clonedElement The cloned Element
* @return new clonedElement which already associated with the SAAJ Node
* @throws WSSecurityException
*/
public static Element cloneElement(Document doc, Element clonedElement) throws WSSecurityException {
clonedElement = (Element)clonedElement.cloneNode(true);
if (isSAAJ14) {
// here we need register the javax.xml.soap.Node with new instance
clonedElement = (Element)doc.importNode(clonedElement, true);
clonedElement = (Element)getDomElement(clonedElement);
}
return clonedElement;
}
/**
* Try to get the DOM Node from the SAAJ Node with JAVA9
* @param node The original node we need check
* @return The DOM node
* @throws WSSecurityException
*/
private static Node getDomElement(Node node) throws WSSecurityException {
if (node != null && isSAAJ14) {
Method method = GET_DOM_ELEMENTS_METHODS.get(node.getClass());
if (method != null) {
try {
return (Node)setAccessible(method).invoke(node);
} catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
throw new WSSecurityException(WSSecurityException.ErrorCode.INVALID_SECURITY);
}
}
}
return node;
}
public static byte[] getBytesFromAttachment(
String xopUri, RequestData data
) throws WSSecurityException {
return getBytesFromAttachment(xopUri, data.getAttachmentCallbackHandler());
}
public static byte[] getBytesFromAttachment(
String xopUri, CallbackHandler attachmentCallbackHandler
) throws WSSecurityException {
return getBytesFromAttachment(xopUri, attachmentCallbackHandler, true);
}
public static byte[] getBytesFromAttachment(
String xopUri, CallbackHandler attachmentCallbackHandler, boolean removeAttachments
) throws WSSecurityException {
return AttachmentUtils.getBytesFromAttachment(xopUri, attachmentCallbackHandler, removeAttachments);
}
public static String getAttachmentId(String xopUri) throws WSSecurityException {
return AttachmentUtils.getAttachmentId(xopUri);
}
}
