/**
* 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.processor;
import java.util.Date;
import java.util.List;
import org.apache.commons.codec.binary.Base64;
import org.apache.wss4j.common.principal.SAMLTokenPrincipalImpl;
import org.apache.wss4j.common.principal.WSUsernameTokenPrincipalImpl;
import org.w3c.dom.Element;
import org.apache.wss4j.common.cache.ReplayCache;
import org.apache.wss4j.common.ext.WSSecurityException;
import org.apache.wss4j.dom.WSConstants;
import org.apache.wss4j.dom.WSDocInfo;
import org.apache.wss4j.dom.WSSConfig;
import org.apache.wss4j.dom.WSSecurityEngine;
import org.apache.wss4j.dom.WSSecurityEngineResult;
import org.apache.wss4j.dom.handler.RequestData;
import org.apache.wss4j.dom.message.token.UsernameToken;
import org.apache.wss4j.dom.validate.Credential;
import org.apache.wss4j.dom.validate.Validator;
public class UsernameTokenProcessor implements Processor {
private static final org.slf4j.Logger LOG =
org.slf4j.LoggerFactory.getLogger(UsernameTokenProcessor.class);
public List<WSSecurityEngineResult> handleToken(
Element elem,
RequestData data,
WSDocInfo wsDocInfo
) throws WSSecurityException {
if (LOG.isDebugEnabled()) {
LOG.debug("Found UsernameToken list element");
}
// See if the token has been previously processed
String id = elem.getAttributeNS(WSConstants.WSU_NS, "Id");
if (!"".equals(id)) {
Element foundElement = wsDocInfo.getTokenElement(id);
if (elem.equals(foundElement)) {
WSSecurityEngineResult result = wsDocInfo.getResult(id);
return java.util.Collections.singletonList(result);
} else if (foundElement != null) {
throw new WSSecurityException(
WSSecurityException.ErrorCode.INVALID_SECURITY_TOKEN, "duplicateError"
);
}
}
Validator validator = data.getValidator(WSSecurityEngine.USERNAME_TOKEN);
Credential credential = handleUsernameToken(elem, validator, data);
UsernameToken token = credential.getUsernametoken();
int action = WSConstants.UT;
byte[] secretKey = null;
if (token.getPassword() == null) {
action = WSConstants.UT_NOPASSWORD;
if (token.isDerivedKey()) {
token.setRawPassword(data);
secretKey = token.getDerivedKey(data.getBSPEnforcer());
}
}
WSSecurityEngineResult result = new WSSecurityEngineResult(action, token);
String tokenId = token.getID();
if (!"".equals(tokenId)) {
result.put(WSSecurityEngineResult.TAG_ID, tokenId);
}
result.put(WSSecurityEngineResult.TAG_SECRET, secretKey);
if (validator != null) {
result.put(WSSecurityEngineResult.TAG_VALIDATED_TOKEN, Boolean.TRUE);
if (credential.getTransformedToken() != null) {
result.put(
WSSecurityEngineResult.TAG_TRANSFORMED_TOKEN, credential.getTransformedToken()
);
if (credential.getPrincipal() != null) {
result.put(WSSecurityEngineResult.TAG_PRINCIPAL, credential.getPrincipal());
} else {
SAMLTokenPrincipalImpl samlPrincipal =
new SAMLTokenPrincipalImpl(credential.getTransformedToken());
result.put(WSSecurityEngineResult.TAG_PRINCIPAL, samlPrincipal);
}
} else if (credential.getPrincipal() != null) {
result.put(WSSecurityEngineResult.TAG_PRINCIPAL, credential.getPrincipal());
} else {
WSUsernameTokenPrincipalImpl principal =
new WSUsernameTokenPrincipalImpl(token.getName(), token.isHashed());
principal.setNonce(Base64.decodeBase64(token.getNonce()));
principal.setPassword(token.getPassword());
principal.setCreatedTime(token.getCreated());
principal.setPasswordType(token.getPasswordType());
result.put(WSSecurityEngineResult.TAG_PRINCIPAL, principal);
}
result.put(WSSecurityEngineResult.TAG_SUBJECT, credential.getSubject());
}
wsDocInfo.addTokenElement(elem);
wsDocInfo.addResult(result);
return java.util.Collections.singletonList(result);
}
/**
* Check the UsernameToken element and validate it.
*
* @param token the DOM element that contains the UsernameToken
* @param data The RequestData object from which to obtain configuration
* @return a Credential object corresponding to the (validated) Username Token
* @throws WSSecurityException
*/
private Credential
handleUsernameToken(
Element token,
Validator validator,
RequestData data
) throws WSSecurityException {
boolean allowNamespaceQualifiedPasswordTypes = false;
WSSConfig wssConfig = data.getWssConfig();
int utTTL = 300;
int futureTimeToLive = 60;
if (wssConfig != null) {
allowNamespaceQualifiedPasswordTypes =
wssConfig.getAllowNamespaceQualifiedPasswordTypes();
utTTL = wssConfig.getUtTTL();
futureTimeToLive = wssConfig.getUtFutureTTL();
}
//
// Parse and validate the UsernameToken element
//
UsernameToken ut =
new UsernameToken(token, allowNamespaceQualifiedPasswordTypes, data.getBSPEnforcer());
// Test for replay attacks
ReplayCache replayCache = data.getNonceReplayCache();
if (replayCache != null && ut.getNonce() != null) {
if (replayCache.contains(ut.getNonce())) {
throw new WSSecurityException(
WSSecurityException.ErrorCode.INVALID_SECURITY,
"badUsernameToken",
"A replay attack has been detected"
);
}
// If no Created, then just cache for the default time
// Otherwise, cache for the configured TTL of the UsernameToken Created time, as any
// older token will just get rejected anyway
Date created = ut.getCreatedDate();
if (created == null || utTTL <= 0) {
replayCache.add(ut.getNonce());
} else {
replayCache.add(ut.getNonce(), utTTL + 1L);
}
}
// Validate whether the security semantics have expired
if (!ut.verifyCreated(utTTL, futureTimeToLive)) {
throw new WSSecurityException(WSSecurityException.ErrorCode.MESSAGE_EXPIRED);
}
Credential credential = new Credential();
credential.setUsernametoken(ut);
if (validator != null) {
return validator.validate(credential, data);
}
return credential;
}
}