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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.
*/
/**
* EntityAttributesMetadataFilter.cpp
*
* Adds EntityAttributes tags to entities.
*/
#include "internal.h"
#include "saml2/metadata/Metadata.h"
#include "saml2/metadata/MetadataFilter.h"
#include <boost/lambda/bind.hpp>
#include <boost/lambda/casts.hpp>
#include <boost/lambda/lambda.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/iterator/indirect_iterator.hpp>
#include <xmltooling/logging.h>
#include <xercesc/util/regx/RegularExpression.hpp>
using namespace opensaml::saml2;
using namespace opensaml::saml2md;
using namespace xmltooling::logging;
using namespace xmltooling;
using namespace boost::lambda;
using namespace boost;
using namespace std;
namespace opensaml {
namespace saml2md {
class SAML_DLLLOCAL EntityAttributesMetadataFilter : public MetadataFilter
{
public:
EntityAttributesMetadataFilter(const DOMElement* e);
~EntityAttributesMetadataFilter() {}
const char* getId() const { return ENTITYATTR_METADATA_FILTER; }
void doFilter(const MetadataFilterContext* ctx, XMLObject& xmlObject) const;
private:
void filterEntity(EntityDescriptor* entity) const;
void filterGroup(EntitiesDescriptor* entities) const;
EntityAttributes* getEntityAttributes(EntityDescriptor* entity) const;
Category& m_log;
vector< boost::shared_ptr<Attribute> > m_attributes;
typedef multimap<xstring,const Attribute*> applymap_t;
typedef map< boost::shared_ptr<RegularExpression>,vector<const Attribute*> > regexmap_t;
applymap_t m_applyMap;
regexmap_t m_regexMap;
};
MetadataFilter* SAML_DLLLOCAL EntityAttributesMetadataFilterFactory(const DOMElement* const & e, bool)
{
return new EntityAttributesMetadataFilter(e);
}
static const XMLCh Entity[] = UNICODE_LITERAL_6(E,n,t,i,t,y);
static const XMLCh EntityRegex[] = UNICODE_LITERAL_11(E,n,t,i,t,y,R,e,g,e,x);
};
};
EntityAttributesMetadataFilter::EntityAttributesMetadataFilter(const DOMElement* e)
: m_log(Category::getInstance(SAML_LOGCAT".MetadataFilter.EntityAttributes"))
{
// Contains ordered set of Attribute and Entity elements.
// We track each Attribute we find, and then consume an Entity by adding.
// a mapping from the Entity to every Attribute seen to that point.
DOMElement* child = XMLHelper::getFirstChildElement(e);
while (child) {
if (XMLHelper::isNodeNamed(child, samlconstants::SAML20_NS, Attribute::LOCAL_NAME)) {
boost::shared_ptr<XMLObject> obj(AttributeBuilder::buildOneFromElement(child));
m_attributes.push_back(boost::dynamic_pointer_cast<Attribute>(obj));
}
else if (XMLString::equals(child->getLocalName(), Entity)) {
const XMLCh* eid = XMLHelper::getTextContent(child);
if (eid && *eid) {
for (vector< boost::shared_ptr<Attribute> >::const_iterator a = m_attributes.begin(); a != m_attributes.end(); ++a)
m_applyMap.insert(applymap_t::value_type(eid, a->get()));
}
}
else if (XMLString::equals(child->getLocalName(), EntityRegex)) {
const XMLCh* exp = XMLHelper::getTextContent(child);
if (exp && *exp) {
boost::shared_ptr<RegularExpression> regexp;
try {
regexp.reset(new RegularExpression(exp));
vector<const Attribute*>& tags = m_regexMap[regexp];
for (vector< boost::shared_ptr<Attribute> >::const_iterator a = m_attributes.begin(); a != m_attributes.end(); ++a)
tags.push_back(a->get());
}
catch (XMLException& ex) {
auto_ptr_char msg(ex.getMessage());
m_log.error(msg.get());
}
}
}
child = XMLHelper::getNextSiblingElement(child);
}
}
void EntityAttributesMetadataFilter::doFilter(const MetadataFilterContext*, XMLObject& xmlObject) const
{
EntitiesDescriptor* group = dynamic_cast<EntitiesDescriptor*>(&xmlObject);
if (group) {
filterGroup(group);
}
else {
EntityDescriptor* entity = dynamic_cast<EntityDescriptor*>(&xmlObject);
if (entity) {
filterEntity(entity);
}
else {
throw MetadataFilterException(ENTITYATTR_METADATA_FILTER " MetadataFilter was given an improper metadata instance to filter.");
}
}
}
void EntityAttributesMetadataFilter::filterGroup(EntitiesDescriptor* entities) const
{
const vector<EntityDescriptor*>& v = const_cast<const EntitiesDescriptor*>(entities)->getEntityDescriptors();
for_each(v.begin(), v.end(), lambda::bind(&EntityAttributesMetadataFilter::filterEntity, this, _1));
const vector<EntitiesDescriptor*>& v2 = const_cast<const EntitiesDescriptor*>(entities)->getEntitiesDescriptors();
for_each(v2.begin(), v2.end(), lambda::bind(&EntityAttributesMetadataFilter::filterGroup, this, _1));
}
void EntityAttributesMetadataFilter::filterEntity(EntityDescriptor* entity) const
{
if (!entity->getEntityID())
return;
pair<applymap_t::const_iterator,applymap_t::const_iterator> tags = m_applyMap.equal_range(entity->getEntityID());
if (tags.first != tags.second) {
EntityAttributes* wrapper = getEntityAttributes(entity);
VectorOf(Attribute) attrs = wrapper->getAttributes();
for (; tags.first != tags.second; ++tags.first) {
auto_ptr<Attribute> np(tags.first->second->cloneAttribute());
attrs.push_back(np.get());
np.release();
}
}
for (regexmap_t::const_iterator i = m_regexMap.begin(); i != m_regexMap.end(); ++i) {
try {
if (i->first->matches(entity->getEntityID())) {
EntityAttributes* wrapper = getEntityAttributes(entity);
VectorOf(Attribute) attrs = wrapper->getAttributes();
for (vector<const Attribute*>::const_iterator a = i->second.begin(); a != i->second.end(); ++a) {
auto_ptr<Attribute> np((*a)->cloneAttribute());
attrs.push_back(np.get());
np.release();
}
}
}
catch (const XMLException& ex) {
auto_ptr_char msg(ex.getMessage());
m_log.error(msg.get());
}
}
}
EntityAttributes* EntityAttributesMetadataFilter::getEntityAttributes(EntityDescriptor* entity) const
{
Extensions* exts = entity->getExtensions();
if (!exts) {
entity->setExtensions(ExtensionsBuilder::buildExtensions());
exts = entity->getExtensions();
}
EntityAttributes* wrapper = nullptr;
const vector<XMLObject*>& children = const_cast<const Extensions*>(exts)->getUnknownXMLObjects();
XMLObject* xo = find_if(children, ll_dynamic_cast<EntityAttributes*>(_1) != ((EntityAttributes*)nullptr));
if (xo) {
wrapper = dynamic_cast<EntityAttributes*>(xo);
}
else {
wrapper = EntityAttributesBuilder::buildEntityAttributes();
exts->getUnknownXMLObjects().push_back(wrapper);
}
return wrapper;
}
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