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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.
*/
/**
* UIInfoMetadataFilter.cpp
*
* Adds UIInfo extension 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>
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 UIInfoMetadataFilter : public MetadataFilter
{
public:
UIInfoMetadataFilter(const DOMElement* e);
~UIInfoMetadataFilter() {}
const char* getId() const { return UIINFO_METADATA_FILTER; }
void doFilter(const MetadataFilterContext* ctx, XMLObject& xmlObject) const;
private:
void filterEntity(EntityDescriptor* entity) const;
void filterGroup(EntitiesDescriptor* entities) const;
Extensions* getContainer(IDPSSODescriptor* entity) const;
Category& m_log;
bool m_replace;
vector< boost::shared_ptr<UIInfo> > m_infos;
typedef map<xstring,const UIInfo*> applymap_t;
applymap_t m_applyMap;
};
MetadataFilter* SAML_DLLLOCAL UIInfoMetadataFilterFactory(const DOMElement* const & e, bool)
{
return new UIInfoMetadataFilter(e);
}
static const XMLCh Entity[] = UNICODE_LITERAL_6(E,n,t,i,t,y);
static const XMLCh replace[] = UNICODE_LITERAL_7(r,e,p,l,a,c,e);
};
};
UIInfoMetadataFilter::UIInfoMetadataFilter(const DOMElement* e)
: m_log(Category::getInstance(SAML_LOGCAT".MetadataFilter.UIInfo")),
m_replace(XMLHelper::getAttrBool(e, false, replace))
{
// Contains ordered set of UIInfo and Entity elements.
// We track each one we find, and then consume an Entity by adding.
// a mapping from the Entity to the last-seen UIInfo.
const UIInfo* lastSeen = nullptr;
DOMElement* child = XMLHelper::getFirstChildElement(e);
while (child) {
if (XMLHelper::isNodeNamed(child, samlconstants::SAML20MD_UI_NS, UIInfo::LOCAL_NAME)) {
boost::shared_ptr<XMLObject> obj(UIInfoBuilder::buildOneFromElement(child));
m_infos.push_back(boost::dynamic_pointer_cast<UIInfo>(obj));
lastSeen = m_infos.back().get();
}
else if (XMLString::equals(child->getLocalName(), Entity)) {
const XMLCh* eid = XMLHelper::getTextContent(child);
if (eid && *eid && lastSeen) {
m_applyMap.insert(applymap_t::value_type(eid, lastSeen));
}
}
else {
m_log.warn("ignoring unrecognized element, one of mdui:UIInfo or Entity required");
}
child = XMLHelper::getNextSiblingElement(child);
}
if (m_applyMap.empty()) {
m_log.warn("UIInfo filter has no rules to apply");
}
}
void UIInfoMetadataFilter::doFilter(const MetadataFilterContext*, XMLObject& xmlObject) const
{
if (m_applyMap.empty())
return;
EntitiesDescriptor* group = dynamic_cast<EntitiesDescriptor*>(&xmlObject);
if (group) {
filterGroup(group);
}
else {
EntityDescriptor* entity = dynamic_cast<EntityDescriptor*>(&xmlObject);
if (entity) {
filterEntity(entity);
}
else {
throw MetadataFilterException(UIINFO_METADATA_FILTER " MetadataFilter was given an improper metadata instance to filter.");
}
}
}
void UIInfoMetadataFilter::filterGroup(EntitiesDescriptor* entities) const
{
const vector<EntityDescriptor*>& v = const_cast<const EntitiesDescriptor*>(entities)->getEntityDescriptors();
for_each(v.begin(), v.end(), lambda::bind(&UIInfoMetadataFilter::filterEntity, this, _1));
const vector<EntitiesDescriptor*>& v2 = const_cast<const EntitiesDescriptor*>(entities)->getEntitiesDescriptors();
for_each(v2.begin(), v2.end(), lambda::bind(&UIInfoMetadataFilter::filterGroup, this, _1));
}
void UIInfoMetadataFilter::filterEntity(EntityDescriptor* entity) const
{
if (!entity->getEntityID())
return;
applymap_t::const_iterator uiinfo = m_applyMap.find(entity->getEntityID());
if (uiinfo == m_applyMap.end())
return;
VectorOf(IDPSSODescriptor) roles = entity->getIDPSSODescriptors();
for (VectorOf(IDPSSODescriptor)::iterator i = roles.begin(); i != roles.end(); ++i) {
Extensions* ext = getContainer(*i);
if (ext) {
auto_ptr<UIInfo> dup(uiinfo->second->cloneUIInfo());
ext->getUnknownXMLObjects().push_back(dup.get());
dup.release();
}
}
}
Extensions* UIInfoMetadataFilter::getContainer(IDPSSODescriptor* role) const
{
Extensions* exts = role->getExtensions();
if (!exts) {
role->setExtensions(ExtensionsBuilder::buildExtensions());
return role->getExtensions();
}
VectorOf(XMLObject) children = exts->getUnknownXMLObjects();
for (VectorOf(XMLObject)::iterator i = children.begin(); i != children.end(); ++i) {
if (dynamic_cast<UIInfo*>(*i)) {
if (!m_replace)
return nullptr;
children.erase(i);
break;
}
}
return exts;
}
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