--- /dev/null
+/*
+ * Copyright 2009 Internet2
+ *
+ * Licensed 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.
+ */
+
+/**
+ * DelegationRestrictionRule.cpp
+ *
+ * SAML DelegationRestriction SecurityPolicyRule
+ */
+
+#include "internal.h"
+#include "exceptions.h"
+#include "binding/SecurityPolicyRule.h"
+#include "saml2/core/Assertions.h"
+#include "util/SAMLConstants.h"
+
+#include <xmltooling/logging.h>
+
+using namespace opensaml::saml2;
+using namespace opensaml;
+using namespace xmltooling::logging;
+using namespace xmltooling;
+using namespace std;
+
+namespace opensaml {
+ namespace saml2 {
+ class SAML_DLLLOCAL DelegationRestrictionRule : public SecurityPolicyRule
+ {
+ public:
+ DelegationRestrictionRule(const DOMElement* e);
+
+ virtual ~DelegationRestrictionRule() {
+ for_each(m_delegates.begin(), m_delegates.end(), xmltooling::cleanup<Delegate>());
+ }
+ const char* getType() const {
+ return DELEGATION_POLICY_RULE;
+ }
+ bool evaluate(const XMLObject& message, const GenericRequest* request, SecurityPolicy& policy) const;
+
+ private:
+ vector<Delegate*> m_delegates;
+ enum {
+ MATCH_ANY,
+ MATCH_NEWEST,
+ MATCH_OLDEST
+ } m_match;
+ };
+
+ SecurityPolicyRule* SAML_DLLLOCAL DelegationRestrictionRuleFactory(const DOMElement* const & e)
+ {
+ return new DelegationRestrictionRule(e);
+ }
+
+ class SAML_DLLLOCAL _isSameDelegate : public binary_function<const Delegate*,const Delegate*,bool>,
+ public unary_function<const Delegate*,bool>
+ {
+ const Delegate* m_operand;
+ bool isSameFormat(const XMLCh* f1, const XMLCh* f2) const {
+ if (!f1 || !*f1)
+ f1 = NameIDType::UNSPECIFIED;
+ if (!f2 || !*f2)
+ f2 = NameIDType::UNSPECIFIED;
+ return XMLString::equals(f1, f2);
+ }
+ bool matches(const NameID* n1, const NameID* n2) const {
+ return (isSameFormat(n1->getFormat(), n2->getFormat()) &&
+ XMLString::equals(n1->getName(), n2->getName()) &&
+ XMLString::equals(n1->getNameQualifier(), n2->getNameQualifier()) &&
+ XMLString::equals(n1->getSPNameQualifier(), n2->getSPNameQualifier()));
+ }
+ public:
+ _isSameDelegate() : m_operand(NULL) {}
+ _isSameDelegate(const Delegate* d) : m_operand(d) {}
+
+ // d1 is the input from the message, d2 is from the policy
+ bool operator()(const Delegate* d1, const Delegate* d2) const {
+ if (!d1->getNameID()) {
+ Category::getInstance(SAML_LOGCAT".SecurityPolicyRule.DelegationRestriction").error(
+ "rule doesn't support evaluation of BaseID or EncryptedID in a Delegate"
+ );
+ return false;
+ }
+ if (!d2->getConfirmationMethod() || XMLString::equals(d1->getConfirmationMethod(), d2->getConfirmationMethod())) {
+ return matches(d1->getNameID(), d2->getNameID());
+ }
+ return false;
+ }
+
+ // d is from the policy
+ bool operator()(const Delegate* d) const {
+ return this->operator()(m_operand, d);
+ }
+ };
+
+ static XMLCh match[] = UNICODE_LITERAL_5(m,a,t,c,h);
+ static XMLCh any[] = UNICODE_LITERAL_8(a,n,y,O,r,d,e,r);
+ static XMLCh newest[] = UNICODE_LITERAL_6(n,e,w,e,s,t);
+ static XMLCh oldest[] = UNICODE_LITERAL_6(o,l,d,e,s,t);
+
+ }
+};
+
+DelegationRestrictionRule::DelegationRestrictionRule(const DOMElement* e) : m_match(MATCH_ANY)
+{
+ if (e) {
+ const XMLCh* m = e->getAttributeNS(NULL, match);
+ if (XMLString::equals(m, newest))
+ m_match = MATCH_NEWEST;
+ else if (XMLString::equals(m, oldest))
+ m_match = MATCH_OLDEST;
+ else if (m && *m && !XMLString::equals(m, any))
+ throw SecurityPolicyException("Invalid value for \"match\" attribute in Delegation rule.");
+
+ try {
+ DOMElement* d = XMLHelper::getFirstChildElement(e, samlconstants::SAML20_DELEGATION_CONDITION_NS, Delegate::LOCAL_NAME);
+ while (d) {
+ auto_ptr<XMLObject> wrapper(XMLObjectBuilder::buildOneFromElement(d));
+ Delegate* down = dynamic_cast<Delegate*>(wrapper.get());
+ if (down) {
+ m_delegates.push_back(down);
+ wrapper.release();
+ }
+ d = XMLHelper::getNextSiblingElement(d, samlconstants::SAML20_DELEGATION_CONDITION_NS, Delegate::LOCAL_NAME);
+ }
+ }
+ catch (exception&) {
+ for_each(m_delegates.begin(), m_delegates.end(), xmltooling::cleanup<Delegate>());
+ throw;
+ }
+ }
+}
+
+bool DelegationRestrictionRule::evaluate(const XMLObject& message, const GenericRequest* request, SecurityPolicy& policy) const
+{
+ const DelegationRestrictionType* drt=dynamic_cast<const DelegationRestrictionType*>(&message);
+ if (!drt)
+ return false;
+
+ // If we have no embedded Delegates, the condition evaluates to true.
+ if (m_delegates.empty())
+ return true;
+
+ const vector<Delegate*>& dels = drt->getDelegates();
+ if (m_match == MATCH_ANY) {
+ // Each Delegate in the condition MUST match an embedded Delegate.
+ for (vector<Delegate*>::const_iterator d1 = dels.begin(); d1 != dels.end(); ++d1) {
+ if (find_if(m_delegates.begin(), m_delegates.end(), _isSameDelegate(*d1)) == m_delegates.end())
+ return false;
+ }
+ }
+ else if (m_match == MATCH_OLDEST) {
+ return (search(dels.begin(), dels.end(), m_delegates.begin(), m_delegates.end(), _isSameDelegate()) == dels.begin());
+ }
+ else if (m_match == MATCH_NEWEST) {
+ return (search(dels.rbegin(), dels.rend(), m_delegates.begin(), m_delegates.end(), _isSameDelegate()) == dels.rbegin());
+ }
+
+ return true;
+}
projects / shibboleth / cpp-opensaml.git / blobdiff