/**
* 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.
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package org.apache.cxf.rs.security.saml.authorization;
import java.security.Principal;
import java.util.Set;
import org.w3c.dom.Element;
import org.apache.cxf.message.Message;
import org.apache.cxf.rs.security.saml.assertion.Subject;
import org.apache.cxf.rt.security.SecurityConstants;
import org.apache.cxf.rt.security.claims.ClaimCollection;
import org.apache.cxf.rt.security.saml.claims.SAMLClaim;
import org.apache.cxf.rt.security.saml.claims.SAMLSecurityContext;
import org.apache.cxf.rt.security.saml.utils.SAMLUtils;
import org.apache.cxf.rt.security.utils.SecurityUtils;
import org.apache.cxf.security.SecurityContext;
import org.apache.wss4j.common.saml.SamlAssertionWrapper;
import org.apache.wss4j.common.saml.builder.SAML2Constants;
public class SecurityContextProviderImpl implements SecurityContextProvider {
private static final String ROLE_QUALIFIER_PROPERTY = "org.apache.cxf.saml.claims.role.qualifier";
private static final String ROLE_NAMEFORMAT_PROPERTY = "org.apache.cxf.saml.claims.role.nameformat";
public SecurityContext getSecurityContext(Message message,
SamlAssertionWrapper wrapper) {
// First check to see if we are allowed to set up a security context
// The SAML Assertion must be signed, or we must explicitly allow unsigned
String allowUnsigned =
(String)SecurityUtils.getSecurityPropertyValue(
SecurityConstants.ENABLE_UNSIGNED_SAML_ASSERTION_PRINCIPAL, message
);
boolean allowUnsignedSamlPrincipals = Boolean.parseBoolean(allowUnsigned);
if (!(wrapper.isSigned() || allowUnsignedSamlPrincipals)) {
return null;
}
ClaimCollection claims = getClaims(wrapper);
Subject subject = getSubject(message, wrapper, claims);
SecurityContext securityContext = doGetSecurityContext(message, subject, claims);
if (securityContext instanceof SAMLSecurityContext) {
Element assertionElement = wrapper.getElement();
((SAMLSecurityContext)securityContext).setAssertionElement(assertionElement);
}
return securityContext;
}
protected ClaimCollection getClaims(SamlAssertionWrapper wrapper) {
return SAMLUtils.getClaims(wrapper);
}
protected Subject getSubject(Message message, SamlAssertionWrapper wrapper, ClaimCollection claims) {
return org.apache.cxf.rs.security.saml.SAMLUtils.getSubject(message, wrapper);
}
protected SecurityContext doGetSecurityContext(
Message message, Subject subject, ClaimCollection claims
) {
String defaultRoleName = (String)message.getContextualProperty(ROLE_QUALIFIER_PROPERTY);
if (defaultRoleName == null) {
defaultRoleName =
(String)message.getContextualProperty(SecurityConstants.SAML_ROLE_ATTRIBUTENAME);
}
String defaultNameFormat = (String)message.getContextualProperty(ROLE_NAMEFORMAT_PROPERTY);
String subjectPrincipalName = getSubjectPrincipalName(subject, claims);
SubjectPrincipal subjectPrincipal =
new SubjectPrincipal(subjectPrincipalName, subject);
String roleName =
defaultRoleName == null ? SAMLClaim.SAML_ROLE_ATTRIBUTENAME_DEFAULT : defaultRoleName;
String nameFormat =
defaultNameFormat == null ? SAML2Constants.ATTRNAME_FORMAT_UNSPECIFIED : defaultNameFormat;
Set<Principal> roles =
SAMLUtils.parseRolesFromClaims(claims, roleName, nameFormat);
return new SAMLSecurityContext(subjectPrincipal, roles, claims);
}
//TODO: This can be overridden, but consider also introducing dedicated handlers
protected String getSubjectPrincipalName(Subject subject, ClaimCollection claims) {
// parse/decipher subject name, or check claims such as
// givenName, email, firstName
// and use it to authenticate with the external system if needed
// Or if STS has been used to validate the SAML token on the server side then
// whatever name the subject has provided can probably be used as a principal name
// as IDP must've confirmed that this subject indeed got authenticated and such...
return subject.getName();
}
}