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/**
* Licensed to the University Corporation for Advanced Internet
* Development, Inc. (UCAID) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership.
*
* UCAID 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.
*/
/**
* EntityRoleMetadataFilter.cpp
*
* Removes non-included roles from a metadata instance.
*/
#include "internal.h"
#include "saml2/metadata/Metadata.h"
#include "saml2/metadata/MetadataFilter.h"
#include <xmltooling/logging.h>
using namespace opensaml::saml2md;
using namespace xmltooling::logging;
using namespace xmltooling;
using namespace std;
using boost::scoped_ptr;
namespace opensaml {
namespace saml2md {
class SAML_DLLLOCAL EntityRoleMetadataFilter : public MetadataFilter
{
public:
EntityRoleMetadataFilter(const DOMElement* e);
~EntityRoleMetadataFilter() {}
const char* getId() const { return ENTITYROLE_METADATA_FILTER; }
void doFilter(const MetadataFilterContext* ctx, XMLObject& xmlObject) const;
private:
void doFilter(EntityDescriptor& entity) const;
void doFilter(EntitiesDescriptor& entities) const;
bool m_removeRolelessEntityDescriptors, m_removeEmptyEntitiesDescriptors;
set<xmltooling::QName> m_roles;
bool m_idp, m_sp, m_authn, m_attr, m_pdp, m_authnq, m_attrq, m_authzq;
};
MetadataFilter* SAML_DLLLOCAL EntityRoleMetadataFilterFactory(const DOMElement* const & e, bool)
{
return new EntityRoleMetadataFilter(e);
}
};
};
static const XMLCh RetainedRole[] = UNICODE_LITERAL_12(R,e,t,a,i,n,e,d,R,o,l,e);
static const XMLCh removeRolelessEntityDescriptors[] = UNICODE_LITERAL_31(r,e,m,o,v,e,R,o,l,e,l,e,s,s,E,n,t,i,t,y,D,e,s,c,r,i,p,t,o,r,s);
static const XMLCh removeEmptyEntitiesDescriptors[] = UNICODE_LITERAL_30(r,e,m,o,v,e,E,m,p,t,y,E,n,t,i,t,i,e,s,D,e,s,c,r,i,p,t,o,r,s);
EntityRoleMetadataFilter::EntityRoleMetadataFilter(const DOMElement* e)
: m_removeRolelessEntityDescriptors(XMLHelper::getAttrBool(e, true, removeRolelessEntityDescriptors)),
m_removeEmptyEntitiesDescriptors(XMLHelper::getAttrBool(e, true, removeEmptyEntitiesDescriptors)),
m_idp(false), m_sp(false), m_authn(false), m_attr(false), m_pdp(false), m_authnq(false), m_attrq(false), m_authzq(false)
{
e = XMLHelper::getFirstChildElement(e, RetainedRole);
while (e) {
scoped_ptr<xmltooling::QName> q(XMLHelper::getNodeValueAsQName(e));
if (q) {
if (*q == IDPSSODescriptor::ELEMENT_QNAME)
m_idp = true;
else if (*q == SPSSODescriptor::ELEMENT_QNAME)
m_sp = true;
else if (*q == AuthnAuthorityDescriptor::ELEMENT_QNAME)
m_authn = true;
else if (*q == AttributeAuthorityDescriptor::ELEMENT_QNAME)
m_attr = true;
else if (*q == PDPDescriptor::ELEMENT_QNAME)
m_pdp = true;
else if (*q == AuthnQueryDescriptorType::TYPE_QNAME)
m_authnq = true;
else if (*q == AttributeQueryDescriptorType::TYPE_QNAME)
m_attrq = true;
else if (*q == AuthzDecisionQueryDescriptorType::TYPE_QNAME)
m_authzq = true;
else
m_roles.insert(*q);
}
e = XMLHelper::getNextSiblingElement(e, RetainedRole);
}
}
void EntityRoleMetadataFilter::doFilter(const MetadataFilterContext*, XMLObject& xmlObject) const
{
EntitiesDescriptor* group = dynamic_cast<EntitiesDescriptor*>(&xmlObject);
if (group) {
doFilter(*group);
}
else {
EntityDescriptor* entity = dynamic_cast<EntityDescriptor*>(&xmlObject);
if (entity) {
doFilter(*entity);
}
else {
throw MetadataFilterException(ENTITYROLE_METADATA_FILTER " MetadataFilter was given an improper metadata instance to filter.");
}
}
}
void EntityRoleMetadataFilter::doFilter(EntitiesDescriptor& entities) const
{
Category& log=Category::getInstance(SAML_LOGCAT ".MetadataFilter." ENTITYROLE_METADATA_FILTER);
VectorOf(EntityDescriptor) v = entities.getEntityDescriptors();
for (VectorOf(EntityDescriptor)::size_type i = 0; i < v.size(); ) {
doFilter(*v[i]);
if (m_removeRolelessEntityDescriptors) {
const EntityDescriptor& e = const_cast<const EntityDescriptor&>(*v[i]);
if (e.getIDPSSODescriptors().empty() &&
e.getSPSSODescriptors().empty() &&
e.getAuthnAuthorityDescriptors().empty() &&
e.getAttributeAuthorityDescriptors().empty() &&
e.getPDPDescriptors().empty() &&
e.getAuthnQueryDescriptorTypes().empty() &&
e.getAttributeQueryDescriptorTypes().empty() &&
e.getAuthzDecisionQueryDescriptorTypes().empty() &&
e.getRoleDescriptors().empty()) {
auto_ptr_char temp(e.getEntityID());
log.debug("filtering out role-less entity (%s)", temp.get());
v.erase(v.begin() + i);
continue;
}
}
i++;
}
VectorOf(EntitiesDescriptor) groups = entities.getEntitiesDescriptors();
for (VectorOf(EntitiesDescriptor)::size_type j = 0; j < groups.size(); ) {
EntitiesDescriptor* group = groups[j];
doFilter(*group);
if (m_removeEmptyEntitiesDescriptors && group->getEntitiesDescriptors().empty() && group->getEntityDescriptors().empty()) {
auto_ptr_char temp(entities.getName());
auto_ptr_char temp2(group->getName());
log.debug(
"filtering out empty EntitiesDescriptor (%s) from EntitiesDescriptor (%s)",
temp2.get() ? temp2.get() : "unnamed",
temp.get() ? temp.get() : "unnamed"
);
groups.erase(groups.begin() + j);
}
else {
j++;
}
}
}
void EntityRoleMetadataFilter::doFilter(EntityDescriptor& entity) const
{
if (!m_idp)
entity.getIDPSSODescriptors().clear();
if (!m_sp)
entity.getSPSSODescriptors().clear();
if (!m_authn)
entity.getAuthnAuthorityDescriptors().clear();
if (!m_attr)
entity.getAttributeAuthorityDescriptors().clear();
if (!m_pdp)
entity.getPDPDescriptors().clear();
if (!m_authnq)
entity.getAuthnQueryDescriptorTypes().clear();
if (!m_attrq)
entity.getAttributeQueryDescriptorTypes().clear();
if (!m_authzq)
entity.getAuthzDecisionQueryDescriptorTypes().clear();
VectorOf(RoleDescriptor) v = entity.getRoleDescriptors();
for (VectorOf(RoleDescriptor)::size_type i = 0; i < v.size(); ) {
const xmltooling::QName* type = v[i]->getSchemaType();
if (!type || m_roles.find(*type) != m_roles.end())
v.erase(v.begin() + i);
else
i++;
}
}
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