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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.ws.security.message;
import org.apache.ws.security.WSConstants;
import org.apache.ws.security.WSSConfig;
import org.apache.ws.security.WSSecurityException;
import org.apache.ws.security.message.token.UsernameToken;
import org.apache.ws.security.util.Base64;
import org.apache.ws.security.util.WSSecurityUtil;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
/**
* Builds a WS UsernameToken.
*
* Refer to the WS specification, UsernameToken profile
*
* @author Werner Dittmann ([email protected]).
*/
public class WSSecUsernameToken extends WSSecBase {
private static org.apache.commons.logging.Log log =
org.apache.commons.logging.LogFactory.getLog(WSSecUsernameToken.class);
private String passwordType = WSConstants.PASSWORD_DIGEST;
private UsernameToken ut = null;
private boolean nonce = false;
private boolean created = false;
private boolean useDerivedKey = false;
private boolean useMac = false;
private byte[] saltValue;
private int iteration = UsernameToken.DEFAULT_ITERATION;
private int secretKeyLength = WSConstants.WSE_DERIVED_KEY_LEN;
private boolean passwordsAreEncoded = false;
public WSSecUsernameToken() {
super();
}
public WSSecUsernameToken(WSSConfig config) {
super(config);
}
/**
* Defines how to construct the password element of the
* UsernameToken.
*
* @param pwType
* contains the password type. Only allowed values are
* {@link WSConstants#PASSWORD_DIGEST} and
* {@link WSConstants#PASSWORD_TEXT}.
* or null when no password is needed.
*/
public void setPasswordType(String pwType) {
this.passwordType = pwType;
}
/**
* Add a Nonce element to the UsernameToken.
*/
public void addNonce() {
nonce = true;
}
/**
* Add a Created element to the UsernameToken.
*/
public void addCreated() {
created = true;
}
/**
* Set the secret key length
*/
public void setSecretKeyLength(int length) {
secretKeyLength = length;
}
/**
* Get the secret key length
*/
public int getSecretKeyLength() {
return secretKeyLength;
}
/**
* Add a derived key to the UsernameToken
* @param useMac whether the derived key is to be used for a MAC or not
* @param saltValue The salt value to use
* @param iteration The number of iterations to use in deriving a key
*/
public void addDerivedKey(boolean useMac, byte[] saltValue, int iteration) {
passwordType = null;
useDerivedKey = true;
this.useMac = useMac;
this.saltValue = saltValue;
if (iteration > 0) {
this.iteration = iteration;
}
}
/**
* Get the derived secret key.
*
* After the prepare() method was called use this method
* to compute a derived secret key. If "useDerivedKey" is set, then the returned secret
* key is derived as per the UsernameToken 1.1 specification. Otherwise, the generation
* of this secret key is according to the WS-Trust specifications.
*
* @return Return the derived secret key of this token or null if prepare()
* was not called before.
*/
public byte[] getSecretKey() throws WSSecurityException {
if (ut == null) {
return null;
}
if (useDerivedKey) {
if (passwordsAreEncoded) {
return UsernameToken.generateDerivedKey(Base64.decode(password), saltValue, iteration);
} else {
return UsernameToken.generateDerivedKey(password, saltValue, iteration);
}
}
return ut.getSecretKey(secretKeyLength);
}
/**
* Get the derived key.
*
* After the prepare() method was called use this method
* to compute a derived key. The generation of this secret key is according
* to the UsernameTokenProfile 1.1 specification (section 4 - Key Derivation).
*
* @return Return the derived key of this token or null if prepare()
* was not called before.
*/
public byte[] getDerivedKey() throws WSSecurityException {
if (ut == null || !useDerivedKey) {
return null;
}
if (passwordsAreEncoded) {
return UsernameToken.generateDerivedKey(Base64.decode(password), saltValue, iteration);
} else {
return UsernameToken.generateDerivedKey(password, saltValue, iteration);
}
}
/**
* @param passwordsAreEncoded
* whether passwords are encoded
*/
public void setPasswordsAreEncoded(boolean passwordsAreEncoded) {
this.passwordsAreEncoded = passwordsAreEncoded;
}
/**
* @return whether passwords are encoded
*/
public boolean getPasswordsAreEncoded() {
return passwordsAreEncoded;
}
/**
* Get the id generated during prepare().
*
* Returns the the value of wsu:Id attribute of this UsernameToken.
*
* @return Return the wsu:Id of this token or null if prepare()
* was not called before.
*/
public String getId() {
if (ut == null) {
return null;
}
return ut.getID();
}
/**
* Creates a Username token.
*
* The method prepares and initializes a WSSec UsernameToken structure after
* the relevant information was set. A Before calling
* prepare() all parameters such as user, password,
* passwordType etc. must be set. A complete UsernameToken is
* constructed.
*
* @param doc The SOAP envelope as W3C document
*/
public void prepare(Document doc) {
ut = new UsernameToken(getWsConfig().isPrecisionInMilliSeconds(), doc,
getWsConfig().getCurrentTime(), passwordType);
ut.setPasswordsAreEncoded(passwordsAreEncoded);
ut.setName(user);
if (useDerivedKey) {
saltValue = ut.addSalt(doc, saltValue, useMac);
ut.addIteration(doc, iteration);
} else {
ut.setPassword(password);
}
if (nonce) {
ut.addNonce(doc);
}
if (created) {
ut.addCreated(getWsConfig().isPrecisionInMilliSeconds(), getWsConfig().getCurrentTime(), doc);
}
ut.setID(getWsConfig().getIdAllocator().createId("UsernameToken-", ut));
}
/**
* Prepends the UsernameToken element to the elements already in the
* Security header.
*
* The method can be called any time after prepare().
* This allows to insert the UsernameToken element at any position in the
* Security header.
*
* @param secHeader The security header that holds the Signature element.
*/
public void prependToHeader(WSSecHeader secHeader) {
WSSecurityUtil.prependChildElement(secHeader.getSecurityHeader(), ut.getElement());
}
/**
* Appends the UsernameToken element to the elements already in the
* Security header.
*
* The method can be called any time after prepare().
* This allows to insert the UsernameToken element at any position in the
* Security header.
*
* @param secHeader The security header that holds the Signature element.
*/
public void appendToHeader(WSSecHeader secHeader) {
Element secHeaderElement = secHeader.getSecurityHeader();
secHeaderElement.appendChild(ut.getElement());
}
/**
* Adds a new UsernameToken to a soap envelope.
*
* Before calling build() all parameters such as user,
* password, passwordType etc. must be set. A complete
* UsernameToken is constructed and added to the
* wsse:Security header.
*
* @param doc The SOAP envelope as W3C document
* @param secHeader The security header inside the SOAP envelope
* @return Document with UsernameToken added
*/
public Document build(Document doc, WSSecHeader secHeader) {
log.debug("Begin add username token...");
prepare(doc);
prependToHeader(secHeader);
return doc;
}
/**
* Returns the UsernameToken element.
*
* The method can be called any time after prepare().
* This allows to insert the UsernameToken element at any position in the
* Security header.
*
* @return the Username Token element
*/
public Element getUsernameTokenElement() {
return ut.getElement();
}
}
