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/*
* Copyright 2004,2005 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.rampart;
import org.apache.axiom.soap.SOAPEnvelope;
import org.apache.axiom.soap.SOAPFault;
import org.apache.axiom.soap.SOAPHeader;
import org.apache.axiom.soap.SOAPHeaderBlock;
import org.apache.axis2.AxisFault;
import org.apache.axis2.context.MessageContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.rahas.Token;
import org.apache.rahas.TokenStorage;
import org.apache.rampart.policy.RampartPolicyData;
import org.apache.rampart.saml.SAMLAssertionHandler;
import org.apache.rampart.saml.SAMLAssertionHandlerFactory;
import org.apache.rampart.util.Axis2Util;
import org.apache.rampart.util.RampartUtil;
import org.apache.ws.secpolicy.WSSPolicyException;
import org.apache.ws.secpolicy.model.UsernameToken;
import org.apache.ws.security.*;
import org.apache.ws.security.components.crypto.Crypto;
import javax.xml.namespace.QName;
import java.security.cert.X509Certificate;
import java.util.*;
public class RampartEngine {
private static Log log = LogFactory.getLog(RampartEngine.class);
private static Log tlog = LogFactory.getLog(RampartConstants.TIME_LOG);
private static ServiceNonceCache serviceNonceCache = new ServiceNonceCache();
public List process(MessageContext msgCtx) throws WSSPolicyException,
RampartException, WSSecurityException, AxisFault {
boolean dotDebug = tlog.isDebugEnabled();
log.debug("Enter process(MessageContext msgCtx)");
RampartMessageData rmd = new RampartMessageData(msgCtx, false);
RampartPolicyData rpd = rmd.getPolicyData();
msgCtx.setProperty(RampartMessageData.RAMPART_POLICY_DATA, rpd);
RampartUtil.validateTransport(rmd);
// If there is no policy information return immediately
if (rpd == null) {
return null;
}
//TODO these checks have to be done before the convertion to avoid unnecessary convertion to LLOM -> DOOM
// If the message is a security fault or no security
// header required by the policy
if(isSecurityFault(rmd) || !RampartUtil.isSecHeaderRequired(rpd,rmd.isInitiator(),true)) {
SOAPEnvelope env = Axis2Util.getSOAPEnvelopeFromDOMDocument(rmd.getDocument(), true);
//Convert back to llom since the inflow cannot use llom
msgCtx.setEnvelope(env);
Axis2Util.useDOOM(false);
log.debug("Return process MessageContext msgCtx)");
return null;
}
List results;
WSSecurityEngine engine = new WSSecurityEngine();
ValidatorData data = new ValidatorData(rmd);
SOAPHeader header = rmd.getMsgContext().getEnvelope().getHeader();
if(header == null) {
throw new RampartException("missingSOAPHeader");
}
ArrayList headerBlocks = header.getHeaderBlocksWithNSURI(WSConstants.WSSE_NS);
SOAPHeaderBlock secHeader = null;
//Issue is axiom - a returned collection must not be null
if(headerBlocks != null) {
Iterator headerBlocksIterator = headerBlocks.iterator();
while (headerBlocksIterator.hasNext()) {
SOAPHeaderBlock elem = (SOAPHeaderBlock) headerBlocksIterator.next();
if(elem.getLocalName().equals(WSConstants.WSSE_LN)) {
secHeader = elem;
break;
}
}
}
if(secHeader == null) {
throw new RampartException("missingSecurityHeader");
}
long t0=0, t1=0, t2=0, t3=0;
if(dotDebug){
t0 = System.currentTimeMillis();
}
//wss4j does not allow username tokens with no password per default, see https://issues.apache.org/jira/browse/WSS-420
//configure it to allow them explicitly if at least one username token assertion with no password requirement is found
if (!rmd.isInitiator()) {
Collection usernameTokens = RampartUtil.getUsernameTokens(rpd);
for (UsernameToken usernameTok : usernameTokens) {
if (usernameTok.isNoPassword()) {
log.debug("Found UsernameToken with no password assertion in policy, configuring ws security processing to allow username tokens without password." );
engine.getWssConfig().setAllowUsernameTokenNoPassword(true);
break;
}
}
}
String actorValue = secHeader.getAttributeValue(new QName(rmd
.getSoapConstants().getEnvelopeURI(), "actor"));
Crypto signatureCrypto = RampartUtil.getSignatureCrypto(rpd.getRampartConfig(),
msgCtx.getAxisService().getClassLoader());
TokenCallbackHandler tokenCallbackHandler = new TokenCallbackHandler(rmd.getTokenStorage(), RampartUtil.getPasswordCB(rmd));
if(rpd.isSymmetricBinding()) {
//Here we have to create the CB handler to get the tokens from the
//token storage
log.debug("Processing security header using SymetricBinding");
results = engine.processSecurityHeader(rmd.getDocument(),
actorValue,
tokenCallbackHandler,
signatureCrypto,
RampartUtil.getEncryptionCrypto(rpd.getRampartConfig(),
msgCtx.getAxisService().getClassLoader()));
// Remove encryption tokens if this is the initiator and if initiator is receiving a message
if (rmd.isInitiator() && (msgCtx.getFLOW() == MessageContext.IN_FLOW ||
msgCtx.getFLOW() == MessageContext.IN_FAULT_FLOW)) {
tokenCallbackHandler.removeEncryptedToken();
}
} else {
log.debug("Processing security header in normal path");
results = engine.processSecurityHeader(rmd.getDocument(),
actorValue,
tokenCallbackHandler,
signatureCrypto,
RampartUtil.getEncryptionCrypto(rpd.getRampartConfig(),
msgCtx.getAxisService().getClassLoader()));
}
if(dotDebug){
t1 = System.currentTimeMillis();
}
//Store symm tokens
//Pick the first SAML token
//TODO : This is a hack , MUST FIX
//get the sec context id from the req msg ctx
//Store username in MessageContext property
for (int j = 0; j < results.size(); j++) {
WSSecurityEngineResult wser = (WSSecurityEngineResult) results.get(j);
final Integer actInt =
(Integer) wser.get(WSSecurityEngineResult.TAG_ACTION);
if (WSConstants.ST_UNSIGNED == actInt.intValue()) {
Object samlAssertion = wser.get(WSSecurityEngineResult.TAG_SAML_ASSERTION);
SAMLAssertionHandler samlAssertionHandler
= SAMLAssertionHandlerFactory.createAssertionHandler(samlAssertion);
if (samlAssertionHandler.isBearerAssertion()) {
break;
}
//Store the token
try {
TokenStorage store = rmd.getTokenStorage();
if (store.getToken(samlAssertionHandler.getAssertionId()) == null) {
Token token = new Token(samlAssertionHandler.getAssertionId(),
samlAssertionHandler.getAssertionElement(),
samlAssertionHandler.getDateNotBefore(),
samlAssertionHandler.getDateNotOnOrAfter());
token.setSecret(samlAssertionHandler.
getAssertionKeyInfoSecret(signatureCrypto, tokenCallbackHandler));
store.add(token);
}
} catch (Exception e) {
throw new RampartException(
"errorInAddingTokenIntoStore", e);
}
} else if (WSConstants.UT == actInt) {
WSUsernameTokenPrincipal userNameTokenPrincipal = (WSUsernameTokenPrincipal)wser.get(WSSecurityEngineResult.TAG_PRINCIPAL);
String username = userNameTokenPrincipal.getName();
msgCtx.setProperty(RampartMessageData.USERNAME, username);
if (userNameTokenPrincipal.getNonce() != null) {
// Check whether this is a replay attack. To verify that we need to check whether nonce value
// is a repeating one
int nonceLifeTimeInSeconds = 0;
if (rpd.getRampartConfig() != null) {
String stringLifeTime = rpd.getRampartConfig().getNonceLifeTime();
try {
nonceLifeTimeInSeconds = Integer.parseInt(stringLifeTime);
} catch (NumberFormatException e) {
log.error("Invalid value for nonceLifeTime in rampart configuration file.", e);
throw new RampartException(
"invalidNonceLifeTime", e);
}
}
String serviceEndpointName = msgCtx.getAxisService().getEndpointName();
boolean valueRepeating = serviceNonceCache.isNonceRepeatingForService(serviceEndpointName, username, userNameTokenPrincipal.getNonce());
if (valueRepeating){
throw new RampartException("repeatingNonceValue", new Object[]{ userNameTokenPrincipal.getNonce(), username} );
}
serviceNonceCache.addNonceForService(serviceEndpointName, username, userNameTokenPrincipal.getNonce(), nonceLifeTimeInSeconds);
}
} else if (WSConstants.SIGN == actInt) {
X509Certificate cert = (X509Certificate) wser.get(WSSecurityEngineResult.TAG_X509_CERTIFICATE);
if (rpd.isAsymmetricBinding() && cert == null && rpd.getInitiatorToken() != null
&& !rpd.getInitiatorToken().isDerivedKeys()) {
// If symmetric binding is used, the certificate should be null.
// If certificate is not null then probably initiator and
// recipient are using 2 different bindings.
throw new RampartException("invalidSignatureAlgo");
}
msgCtx.setProperty(RampartMessageData.X509_CERT, cert);
}
}
SOAPEnvelope env = Axis2Util.getSOAPEnvelopeFromDOMDocument(rmd.getDocument(), true);
if(dotDebug){
t2 = System.currentTimeMillis();
}
//Convert back to llom since the inflow cannot use DOOM
msgCtx.setEnvelope(env);
Axis2Util.useDOOM(false);
PolicyValidatorCallbackHandler validator = RampartUtil.getPolicyValidatorCB(msgCtx, rpd);
if (validator instanceof ExtendedPolicyValidatorCallbackHandler) {
ExtendedPolicyValidatorCallbackHandler extendedPolicyValidatorCallbackHandler
= (ExtendedPolicyValidatorCallbackHandler)validator;
extendedPolicyValidatorCallbackHandler.validate(data,results);
} else {
Vector resultsVector = new Vector(results);
validator.validate(data, resultsVector);
}
if(dotDebug){
t3 = System.currentTimeMillis();
tlog.debug("processHeader by WSSecurityEngine took : " + (t1 - t0) +
", DOOM conversion took :" + (t2 - t1) +
", PolicyBasedResultsValidattor took " + (t3 - t2));
}
log.debug("Return process(MessageContext msgCtx)");
return results;
}
// Check whether this a soap fault because of failure in processing the security header
//and if so, we don't expect the security header
//
//
private boolean isSecurityFault(RampartMessageData rmd) {
SOAPFault soapFault = rmd.getMsgContext().getEnvelope().getBody().getFault();
return soapFault == null ? false : RampartUtil.isSecurityFault(soapFault);
}
}
