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/*
* Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.ws.security.trust.sts;
import com.sun.xml.ws.api.security.trust.BaseSTS;
import com.sun.xml.ws.security.trust.WSTrustConstants;
import com.sun.xml.ws.api.security.trust.WSTrustContract;
import com.sun.xml.ws.api.security.trust.WSTrustException;
import com.sun.xml.ws.api.security.trust.config.STSConfiguration;
import com.sun.xml.ws.policy.PolicyAssertion;
import com.sun.xml.ws.security.IssuedTokenContext;
import com.sun.xml.ws.security.impl.IssuedTokenContextImpl;
import com.sun.xml.ws.security.impl.policy.Constants;
import com.sun.xml.ws.security.trust.WSTrustVersion;
import com.sun.xml.ws.security.trust.WSTrustConstants;
import com.sun.xml.ws.security.trust.WSTrustElementFactory;
import com.sun.xml.ws.security.trust.WSTrustFactory;
import com.sun.xml.ws.security.trust.elements.BaseSTSRequest;
import com.sun.xml.ws.security.trust.elements.BaseSTSResponse;
import com.sun.xml.ws.security.trust.elements.RequestSecurityToken;
import com.sun.xml.ws.security.trust.impl.DefaultSTSConfiguration;
import com.sun.xml.ws.security.trust.impl.DefaultTrustSPMetadata;
import com.sun.xml.ws.security.trust.util.WSTrustUtil;
import com.sun.xml.wss.SecurityEnvironment;
import com.sun.xml.wss.SubjectAccessor;
import com.sun.xml.wss.XWSSecurityException;
import java.util.Iterator;
import javax.xml.namespace.QName;
import javax.xml.transform.TransformerException;
import jakarta.xml.ws.WebServiceException;
import javax.xml.transform.Source;
import jakarta.xml.ws.handler.MessageContext;
//import jakarta.xml.ws.BindingType;
//import jakarta.xml.ws.RespectBinding;
import com.sun.xml.ws.policy.impl.bindings.AppliesTo;
import com.sun.xml.wss.WSITXMLFactory;
import com.sun.xml.wss.impl.MessageConstants;
import javax.xml.XMLConstants;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMResult;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* The Base class of an STS implementation. This could be used to implement
* the actual STS. The sub class could override the methods of this class to
* customize the implementation.
*/
//@RespectBinding
//@BindingType
public abstract class BaseSTSImpl implements BaseSTS {
/**
* The default value of the timeout for the tokens issued by this STS
*/
public static final int DEFAULT_TIMEOUT = 36000;
public static final String DEFAULT_ISSUER = "SampleSunSTS";
/**
* The xml element tag for STS Configuration
*/
public static final String STS_CONFIGURATION = "STSConfiguration";
/**
* The default implementation class for the Trust contract. This
* class issues SAML tokens.
*/
public static final String DEFAULT_IMPL =
"com.sun.xml.ws.security.trust.impl.IssueSamlTokenContractImpl";
/**
* The default value for AppliesTo if appliesTo is not specified.
*/
public static final String DEFAULT_APPLIESTO = "default";
/**
* The String AppliesTo
*/
public static final String APPLIES_TO = "AppliesTo";
/**
* The String LifeTime that is used to specify lifetime of the tokens
* issued by this STS.
*/
public static final String LIFETIME = "LifeTime";
/**
* The String CertAlias that is used in the configuration.
* This identifies the alias of the Service that this STS serves.
*/
public static final String ALIAS = "CertAlias";
/**
* The String encrypt-issued-key
*/
public static final String ENCRYPT_KEY = "encryptIssuedKey";
/**
* The String encrypt-issued-token
*/
public static final String ENCRYPT_TOKEN = "encryptIssuedToken";
/**
* The String Contract.
*/
public static final String CONTRACT = "Contract";
public static final String ISSUER = "Issuer";
/**
* The String TokenType.
*/
public static final String TOKEN_TYPE = "TokenType";
/**
* The String KeyType.
*/
public static final String KEY_TYPE = "KeyType";
/**
* The String ServiceProviders.
*/
public static final String SERVICE_PROVIDERS = "ServiceProviders";
/**
* The String endPoint.
*/
public static final String END_POINT = "endPoint";
private static final QName Q_EK = new QName("",ENCRYPT_KEY);
private static final QName Q_ET = new QName("",ENCRYPT_TOKEN);
private static final QName Q_EP = new QName("",END_POINT);
protected WSTrustVersion wstVer = WSTrustVersion.WS_TRUST_10;
/** Implementation of the invoke method of the Provider interface
*
* @param rstElement The message comprising of RequestSecurityToken.
* @return The response message comprising of RequestSecurityTokenResponse
* @throws WebServiceException if there is an error processing request.
* The cause of the WebServiceException may be set to a subclass
* of ProtocolException to control the protocol level
* representation of the exception.
**/
public Source invoke(final Source rstElement){
final STSConfiguration config = getConfiguration();
Source rstrEle = null;
try{
// Get RequestSecurityToken
final WSTrustElementFactory eleFac = WSTrustElementFactory.newInstance(wstVer);
final RequestSecurityToken rst = parseRST(rstElement, config);
String appliesTo = null;
final AppliesTo applTo = rst.getAppliesTo();
if(applTo != null){
appliesTo = WSTrustUtil.getAppliesToURI(applTo);
}
if (appliesTo == null){
appliesTo = DEFAULT_APPLIESTO;
}
if(rst.getRequestType().toString().equals(wstVer.getIssueRequestTypeURI())){
rstrEle = issue(config, appliesTo, eleFac, rst);
}else if(rst.getRequestType().toString().equals(wstVer.getCancelRequestTypeURI())){
rstrEle = cancel(config, appliesTo, eleFac, rst);
}else if(rst.getRequestType().toString().equals(wstVer.getRenewRequestTypeURI())){
rstrEle = renew(config, appliesTo, eleFac, rst);
}else if(rst.getRequestType().toString().equals(wstVer.getValidateRequestTypeURI())){
rstrEle = validate(config, appliesTo, eleFac, rst);
}
} catch (Exception ex){
//ex.printStackTrace();
throw new WebServiceException(ex);
}
return rstrEle;
}
/** The actual STS class should override this method to return the
* correct MessageContext
*
* @return The MessageContext
*/
protected abstract MessageContext getMessageContext();
STSConfiguration getConfiguration() {
final MessageContext msgCtx = getMessageContext();
//final CallbackHandler handler = (CallbackHandler)msgCtx.get(WSTrustConstants.STS_CALL_BACK_HANDLER);
final SecurityEnvironment secEnv = (SecurityEnvironment)msgCtx.get(WSTrustConstants.SECURITY_ENVIRONMENT);
WSTrustVersion wstVersion = (WSTrustVersion)msgCtx.get(WSTrustConstants.WST_VERSION);
String authnCtxClass = (String)msgCtx.get(WSTrustConstants.AUTHN_CONTEXT_CLASS);
if (wstVersion != null){
wstVer = wstVersion;
}
//Get Runtime STSConfiguration
STSConfiguration rtConfig = WSTrustFactory.getRuntimeSTSConfiguration();
if (rtConfig != null){
if (rtConfig.getCallbackHandler() == null){
rtConfig.getOtherOptions().put(WSTrustConstants.SECURITY_ENVIRONMENT, secEnv);
}
if (wstVersion == null){
wstVersion = (WSTrustVersion)rtConfig.getOtherOptions().get(WSTrustConstants.WST_VERSION);
if (wstVersion != null){
wstVer = wstVersion;
}
}
rtConfig.getOtherOptions().put(WSTrustConstants.WST_VERSION, wstVer);
return rtConfig;
}
// Get default STSConfiguration
DefaultSTSConfiguration config = new DefaultSTSConfiguration();
config.getOtherOptions().put(WSTrustConstants.SECURITY_ENVIRONMENT, secEnv);
//config.setCallbackHandler(handler);
final Iterator iterator = (Iterator)msgCtx.get(
Constants.SUN_TRUST_SERVER_SECURITY_POLICY_NS);
if (iterator == null){
throw new WebServiceException("STS configuration information is not available");
}
while(iterator.hasNext()) {
final PolicyAssertion assertion = (PolicyAssertion)iterator.next();
if (!STS_CONFIGURATION.equals(assertion.getName().getLocalPart())) {
continue;
}
config.setEncryptIssuedToken(Boolean.parseBoolean(assertion.getAttributeValue(Q_ET)));
config.setEncryptIssuedKey(Boolean.parseBoolean(assertion.getAttributeValue(Q_EK)));
final Iterator stsConfig =
assertion.getNestedAssertionsIterator();
while(stsConfig.hasNext()){
final PolicyAssertion serviceSTSPolicy = stsConfig.next();
if(LIFETIME.equals(serviceSTSPolicy.getName().getLocalPart())){
config.setIssuedTokenTimeout(Integer.parseInt(serviceSTSPolicy.getValue()));
continue;
}
if(CONTRACT.equals(serviceSTSPolicy.getName().getLocalPart())){
config.setType(serviceSTSPolicy.getValue());
continue;
}
if(ISSUER.equals(serviceSTSPolicy.getName().getLocalPart())){
config.setIssuer(serviceSTSPolicy.getValue());
continue;
}
if(SERVICE_PROVIDERS.equals(serviceSTSPolicy.getName().getLocalPart())){
final Iterator serviceProviders =
serviceSTSPolicy.getNestedAssertionsIterator();
String endpointUri = null;
while(serviceProviders.hasNext()){
final PolicyAssertion serviceProvider = serviceProviders.next();
endpointUri = serviceProvider.getAttributeValue(Q_EP);
if (endpointUri == null){
endpointUri = serviceProvider.getAttributeValue(new QName("", END_POINT.toLowerCase()));
}
final DefaultTrustSPMetadata data = new DefaultTrustSPMetadata(endpointUri);
final Iterator spConfig = serviceProvider.getNestedAssertionsIterator();
while(spConfig.hasNext()){
final PolicyAssertion policy = spConfig.next();
if(ALIAS.equals(policy.getName().getLocalPart())){
data.setCertAlias(policy.getValue());
}else if (TOKEN_TYPE.equals(policy.getName().getLocalPart())){
data.setTokenType(policy.getValue());
}else if (KEY_TYPE.equals(policy.getName().getLocalPart())){
data.setKeyType(policy.getValue());
}
}
config.addTrustSPMetadata(data, endpointUri);
}
}
}
}
config.getOtherOptions().put(WSTrustConstants.WST_VERSION, wstVer);
if(authnCtxClass != null){
config.getOtherOptions().put(WSTrustConstants.AUTHN_CONTEXT_CLASS, authnCtxClass);
}
config.getOtherOptions().putAll(msgCtx);
return config;
}
private Source issue(final STSConfiguration config, final String appliesTo,
final WSTrustElementFactory eleFac, final BaseSTSRequest rst)
throws WSTrustException, TransformerException {
// Create the RequestSecurityTokenResponse message
final WSTrustContract contract = WSTrustFactory.newWSTrustContract(config,
appliesTo);
final IssuedTokenContext context = new IssuedTokenContextImpl();
try {
context.setRequestorSubject(SubjectAccessor.getRequesterSubject(getMessageContext()));
} catch (XWSSecurityException ex) {
throw new WSTrustException("error getting subject",ex);
}
final BaseSTSResponse response = contract.issue(rst, context);
return eleFac.toSource(response);
}
private Source cancel(final STSConfiguration config,
final String appliesTo, final WSTrustElementFactory eleFac,
final BaseSTSRequest rst) {
return null;
}
private Source renew(final STSConfiguration config,final String appliesTo,
final WSTrustElementFactory eleFac, final RequestSecurityToken rst)
throws WSTrustException {
Source rstrEle;
// Create the RequestSecurityTokenResponse message
final WSTrustContract contract = WSTrustFactory.newWSTrustContract(config,
appliesTo);
final IssuedTokenContext context = new IssuedTokenContextImpl();
final BaseSTSResponse rstr = contract.renew(rst, context);
rstrEle = eleFac.toSource(rstr);
return rstrEle;
}
private Source validate(final STSConfiguration config,final String appliesTo,
final WSTrustElementFactory eleFac, final BaseSTSRequest rst)
throws WSTrustException {
Source rstrEle;
// Create the RequestSecurityTokenResponse message
final WSTrustContract contract = WSTrustFactory.newWSTrustContract(config,
appliesTo);
final IssuedTokenContext context = new IssuedTokenContextImpl();
final BaseSTSResponse rstr = contract.validate(rst, context);
rstrEle = eleFac.toSource(rstr);
return rstrEle;
}
private RequestSecurityToken parseRST(Source source, STSConfiguration config) throws WSTrustException{
Element ele = null;
try{
DOMResult result = new DOMResult();
TransformerFactory tfactory = WSITXMLFactory.createTransformerFactory(WSITXMLFactory.DISABLE_SECURE_PROCESSING);
Transformer tf = tfactory.newTransformer();
tf.transform(source, result);
Node node = result.getNode();
if (node instanceof Document){
ele = ((Document)node).getDocumentElement();
} else if (node instanceof Element){
ele = (Element)node;
}
}catch(Exception xe){
throw new WSTrustException("Error occurred while trying to parse RST stream", xe);
}
WSTrustElementFactory fact = WSTrustElementFactory.newInstance(wstVer);
RequestSecurityToken rst = fact.createRSTFrom(ele);
// handling SAML assertion in RST; assume there is one one
// in it fro OnBehalfOf, ActAs or ValidateTarget.
NodeList list = ele.getElementsByTagNameNS("*", "Assertion");
if (list.getLength() > 0){
Element assertion = (Element)list.item(0);
config.getOtherOptions().put(WSTrustConstants.SAML_ASSERTION_ELEMENT_IN_RST, assertion);
}
return rst;
}
}
