/**
* 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.talend.esb.security.saml;
import java.io.PrintWriter;
import java.io.StringWriter;
import org.apache.cxf.interceptor.Fault;
import org.apache.cxf.message.Message;
import org.apache.cxf.phase.AbstractPhaseInterceptor;
import org.apache.cxf.phase.Phase;
import org.apache.cxf.rs.security.saml.SAMLConstants;
import org.apache.cxf.rs.security.saml.SamlFormOutInterceptor;
import org.apache.cxf.rs.security.saml.SamlHeaderOutInterceptor;
import org.apache.cxf.ws.security.SecurityConstants;
import org.apache.cxf.ws.security.tokenstore.SecurityToken;
import org.apache.cxf.ws.security.trust.STSClient;
/**
* An outbound REST interceptor which uses the STSClient to obtain a token from a STS.
* It then stores the DOM Element on the message context so that
* the REST SAML interceptors can retrieve it and send it in a form, header, etc.
* It caches a token and attempts to "renew" it if it has expired.
*/
public class STSRESTOutInterceptor extends AbstractPhaseInterceptor<Message> {
private STSClient stsClient;
private SecurityToken securityToken;
public STSRESTOutInterceptor() {
super(Phase.WRITE);
addBefore(SamlFormOutInterceptor.class.getName());
addBefore(SamlHeaderOutInterceptor.class.getName());
}
@Override
public void handleMessage(Message message) throws Fault {
if (!isRequestor(message)) {
return;
}
if (null != securityToken && !securityToken.isExpired() && null != securityToken.getToken()) {
message.put(SAMLConstants.SAML_TOKEN_ELEMENT, securityToken.getToken());
return;
}
if (null == stsClient) {
return;
}
try {
// Transpose ActAs/OnBehalfOf info from original request to the STS client.
Object token = message.getContextualProperty(SecurityConstants.STS_TOKEN_ACT_AS);
if (token != null) {
stsClient.setActAs(token);
}
token = message.getContextualProperty(SecurityConstants.STS_TOKEN_ON_BEHALF_OF);
if (token != null) {
stsClient.setOnBehalfOf(token);
}
Object o = message.getContextualProperty(SecurityConstants.STS_APPLIES_TO);
String appliesTo = null == o ? null : o.toString();
appliesTo = null == appliesTo
? message.getContextualProperty(Message.ENDPOINT_ADDRESS).toString()
: appliesTo;
stsClient.setMessage(message);
SecurityToken tok = null;
if (null == securityToken) {
tok = stsClient.requestSecurityToken(appliesTo);
} else {
tok = stsClient.renewSecurityToken(securityToken);
}
securityToken = tok;
if (null != securityToken && !securityToken.isExpired() && null != securityToken.getToken()) {
message.put(SAMLConstants.SAML_TOKEN_ELEMENT, securityToken.getToken());
return;
}
} catch (RuntimeException ex) {
throw new Fault(ex);
} catch (Exception ex) {
StringWriter sw = new StringWriter();
ex.printStackTrace(new PrintWriter(sw));
throw new Fault(new RuntimeException(ex.getMessage() + ", stacktrace: " + sw.toString()));
}
}
public STSClient getStsClient() {
return stsClient;
}
/**
* Set the STSClient object. This does the heavy lifting to get a (SAML) Token from the STS.
* @param stsClient the STSClient object.
*/
public void setStsClient(STSClient stsClient) {
this.stsClient = stsClient;
}
}