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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.
*/
/**
* AudienceRestrictionRule.cpp
*
* SAML AudienceRestriction SecurityPolicyRule
*/
#include "internal.h"
#include "exceptions.h"
#include "binding/SecurityPolicy.h"
#include "binding/SecurityPolicyRule.h"
#include "saml1/core/Assertions.h"
#include "saml2/core/Assertions.h"
#define BOOST_BIND_GLOBAL_PLACEHOLDERS
#include <boost/bind.hpp>
#include <xmltooling/logging.h>
using namespace opensaml;
using namespace xmltooling::logging;
using namespace xmltooling;
using namespace boost;
using namespace std;
namespace opensaml {
class SAML_DLLLOCAL AudienceRestrictionRule : public SecurityPolicyRule
{
public:
AudienceRestrictionRule(const DOMElement* e);
virtual ~AudienceRestrictionRule() {
}
const char* getType() const {
return AUDIENCE_POLICY_RULE;
}
bool evaluate(const XMLObject& message, const GenericRequest* request, SecurityPolicy& policy) const;
private:
vector<const XMLCh*> m_audiences;
};
SecurityPolicyRule* SAML_DLLLOCAL AudienceRestrictionRuleFactory(const DOMElement* const & e, bool)
{
return new AudienceRestrictionRule(e);
}
};
AudienceRestrictionRule::AudienceRestrictionRule(const DOMElement* e) : SecurityPolicyRule(e)
{
e = e ? XMLHelper::getFirstChildElement(e, saml2::Audience::LOCAL_NAME) : nullptr;
while (e) {
if (e->hasChildNodes())
m_audiences.push_back(e->getFirstChild()->getNodeValue());
e = XMLHelper::getNextSiblingElement(e, saml2::Audience::LOCAL_NAME);
}
}
bool AudienceRestrictionRule::evaluate(const XMLObject& message, const GenericRequest* request, SecurityPolicy& policy) const
{
if (!SecurityPolicyRule::evaluate(message, request, policy)) {
return false;
}
static bool (*equals_fn)(const XMLCh*, const XMLCh*) = &XMLString::equals;
const saml2::AudienceRestriction* ac2=dynamic_cast<const saml2::AudienceRestriction*>(&message);
if (ac2) {
const vector<saml2::Audience*>& auds2 = ac2->getAudiences();
for (vector<saml2::Audience*>::const_iterator a1 = auds2.begin(); a1 != auds2.end(); ++a1) {
const XMLCh* a1val = (*a1)->getAudienceURI();
vector<xstring>::const_iterator policyMatch = find_if(
policy.getAudiences().begin(), policy.getAudiences().end(),
boost::bind(equals_fn, a1val, boost::bind(&xstring::c_str, _1))
);
if (policyMatch != policy.getAudiences().end())
return true;
vector<const XMLCh*>::const_iterator ruleMatch = find_if(
m_audiences.begin(), m_audiences.end(),
boost::bind(equals_fn, a1val, _1)
);
if (ruleMatch != m_audiences.end())
return true;
}
ostringstream os;
os << *ac2;
Category::getInstance(SAML_LOGCAT ".SecurityPolicyRule.AudienceRestriction").warn(
"unacceptable AudienceRestriction in assertion (%s)", os.str().c_str()
);
throw SecurityPolicyException("Assertion contains an unacceptable AudienceRestriction.");
}
const saml1::AudienceRestrictionCondition* ac1=dynamic_cast<const saml1::AudienceRestrictionCondition*>(&message);
if (ac1) {
const vector<saml1::Audience*>& auds1 = ac1->getAudiences();
for (vector<saml1::Audience*>::const_iterator a1 = auds1.begin(); a1 != auds1.end(); ++a1) {
const XMLCh* a1val = (*a1)->getAudienceURI();
vector<xstring>::const_iterator policyMatch = find_if(
policy.getAudiences().begin(), policy.getAudiences().end(),
boost::bind(equals_fn, a1val, boost::bind(&xstring::c_str, _1))
);
if (policyMatch != policy.getAudiences().end())
return true;
vector<const XMLCh*>::const_iterator ruleMatch = find_if(
m_audiences.begin(), m_audiences.end(),
boost::bind(equals_fn, a1val, _1)
);
if (ruleMatch != m_audiences.end())
return true;
}
ostringstream os;
os << *ac1;
Category::getInstance(SAML_LOGCAT ".SecurityPolicyRule.AudienceRestriction").warn(
"unacceptable AudienceRestrictionCondition in assertion (%s)", os.str().c_str()
);
throw SecurityPolicyException("Assertion contains an unacceptable AudienceRestrictionCondition.");
}
return false;
}
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