/**
* 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.cxf.sts.token.provider;
import java.io.IOException;
import java.util.Collections;
import java.util.List;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.UnsupportedCallbackException;
import org.apache.cxf.sts.STSPropertiesMBean;
import org.apache.cxf.sts.request.TokenRequirements;
import org.apache.wss4j.common.saml.SAMLCallback;
import org.apache.wss4j.common.saml.bean.AttributeStatementBean;
import org.apache.wss4j.common.saml.bean.AuthDecisionStatementBean;
import org.apache.wss4j.common.saml.bean.AuthenticationStatementBean;
import org.apache.wss4j.common.saml.bean.ConditionsBean;
import org.apache.wss4j.common.saml.bean.SubjectBean;
import org.apache.wss4j.common.saml.bean.Version;
import org.apache.wss4j.dom.WSConstants;
/**
* This CallbackHandler implementation is populated with SAML Beans by the SAMLTokenProvider, and is tasked
* with setting them on a SAMLCallback object, which will be parsed (by WSS4J) into a SAML Assertion.
*/
public class SamlCallbackHandler implements CallbackHandler {
private TokenProviderParameters tokenParameters;
private List<AttributeStatementBean> attributeBeans;
private List<AuthenticationStatementBean> authBeans;
private List<AuthDecisionStatementBean> authDecisionBeans;
private ConditionsBean conditionsBean;
private SubjectBean subjectBean;
private String issuer;
/**
* Set the list of AttributeStatementBeans.
*/
public void setAttributeBeans(List<AttributeStatementBean> attributeBeanList) {
this.attributeBeans = attributeBeanList;
}
/**
* Set the list of AuthenticationStatementBeans.
*/
public void setAuthenticationBeans(List<AuthenticationStatementBean> authBeanList) {
this.authBeans = authBeanList;
}
/**
* Set the list of AuthDecisionStatementBeans.
*/
public void setAuthDecisionStatementBeans(List<AuthDecisionStatementBean> authDecisionBeanList) {
this.authDecisionBeans = authDecisionBeanList;
}
/**
* Set the SubjectBean
*/
public void setSubjectBean(SubjectBean subjectBean) {
this.subjectBean = subjectBean;
}
/**
* Set the ConditionsBean
*/
public void setConditionsBean(ConditionsBean conditionsBean) {
this.conditionsBean = conditionsBean;
}
/**
* Set the TokenProviderParameters.
*/
public void setTokenProviderParameters(TokenProviderParameters tokenProviderParameters) {
this.tokenParameters = tokenProviderParameters;
}
/**
* Set the issuer name
*/
public void setIssuer(String issuerName) {
this.issuer = issuerName;
}
public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
for (Callback callback : callbacks) {
if (callback instanceof SAMLCallback) {
SAMLCallback samlCallback = (SAMLCallback) callback;
// Set the Subject
if (subjectBean != null) {
samlCallback.setSubject(subjectBean);
}
// Set the token Type.
TokenRequirements tokenRequirements = tokenParameters.getTokenRequirements();
String tokenType = tokenRequirements.getTokenType();
boolean saml1 = false;
if (WSConstants.WSS_SAML_TOKEN_TYPE.equals(tokenType)
|| WSConstants.SAML_NS.equals(tokenType)) {
samlCallback.setSamlVersion(Version.SAML_11);
saml1 = true;
setSubjectOnBeans();
} else {
samlCallback.setSamlVersion(Version.SAML_20);
}
// Set the issuer
if (issuer == null) {
STSPropertiesMBean stsProperties = tokenParameters.getStsProperties();
samlCallback.setIssuer(stsProperties.getIssuer());
} else {
samlCallback.setIssuer(issuer);
}
// Set the statements
boolean statementAdded = false;
if (attributeBeans != null && !attributeBeans.isEmpty()) {
samlCallback.setAttributeStatementData(attributeBeans);
statementAdded = true;
}
if (authBeans != null && !authBeans.isEmpty()) {
samlCallback.setAuthenticationStatementData(authBeans);
statementAdded = true;
}
if (authDecisionBeans != null && !authDecisionBeans.isEmpty()) {
samlCallback.setAuthDecisionStatementData(authDecisionBeans);
statementAdded = true;
}
// If SAML 1.1 we *must* add a Statement
if (saml1 && !statementAdded) {
AttributeStatementBean defaultStatement =
new DefaultAttributeStatementProvider().getStatement(tokenParameters);
defaultStatement.setSubject(subjectBean);
samlCallback.setAttributeStatementData(Collections.singletonList(defaultStatement));
}
// Set the conditions
samlCallback.setConditions(conditionsBean);
}
}
}
/**
* For SAML 1.1 default to setting the SubjectBean on the statements if they
* don't already have a Subject defined.
*/
private void setSubjectOnBeans() {
if (attributeBeans != null) {
for (AttributeStatementBean attributeBean : attributeBeans) {
if (attributeBean.getSubject() == null) {
attributeBean.setSubject(subjectBean);
}
}
}
if (authBeans != null) {
for (AuthenticationStatementBean authBean : authBeans) {
if (authBean.getSubject() == null) {
authBean.setSubject(subjectBean);
}
}
}
if (authDecisionBeans != null) {
for (AuthDecisionStatementBean authDecisionBean : authDecisionBeans) {
if (authDecisionBean.getSubject() == null) {
authDecisionBean.setSubject(subjectBean);
}
}
}
}
}