+/*
+ * Copyright 2001-2007 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.
+ */
+
+/**
+ * NumberOfAttributeValuesFunctor.cpp
+ *
+ * A match function that evaluates to true if the given attribute has as a number\r
+ * of values that falls between the minimum and maximum.
+ */
+
+#include "internal.h"
+#include "exceptions.h"
+#include "attribute/Attribute.h"
+#include "attribute/filtering/FilteringContext.h"
+#include "attribute/filtering/FilterPolicyContext.h"
+
+using namespace shibsp;
+using namespace std;
+
+namespace shibsp {
+
+ static const XMLCh attributeID[] = UNICODE_LITERAL_11(a,t,t,r,i,b,u,t,e,I,D);
+ static const XMLCh maximum[] = UNICODE_LITERAL_7(m,a,x,i,m,u,m);
+ static const XMLCh minimum[] = UNICODE_LITERAL_7(m,i,n,i,m,u,m);
+
+ /**
+ * A match function that matches the scope of an attribute value against the specified value.
+ */
+ class SHIBSP_DLLLOCAL NumberOfAttributeValuesFunctor : public MatchFunctor
+ {
+ unsigned int m_min,m_max;
+ xmltooling::auto_ptr_char m_attributeID;
+
+ size_t count(const FilteringContext& filterContext) const;
+
+ public:
+ NumberOfAttributeValuesFunctor(const DOMElement* e)
+ : m_min(0), m_max(INT_MAX), m_attributeID(e ? e->getAttributeNS(NULL,attributeID) : NULL) {
+ if (!m_attributeID.get() || !*m_attributeID.get())
+ throw ConfigurationException("No attributeID specified.");
+ const XMLCh* num = e->getAttributeNS(NULL, minimum);
+ if (num && *num)
+ m_min = XMLString::parseInt(num);
+ num = e->getAttributeNS(NULL, maximum);
+ if (num && *num)
+ m_max = XMLString::parseInt(num);
+ }
+
+ bool evaluatePolicyRequirement(const FilteringContext& filterContext) const {
+ size_t c = count(filterContext);
+ return (m_min <= c && c <= m_max);
+ }
+
+ bool evaluatePermitValue(const FilteringContext& filterContext, const Attribute& attribute, size_t index) const {
+ size_t c = count(filterContext);
+ return (m_min <= c && c <= m_max);
+ }
+ };
+
+ MatchFunctor* SHIBSP_DLLLOCAL NumberOfAttributeValuesFactory(const std::pair<const FilterPolicyContext*,const DOMElement*>& p)
+ {
+ return new NumberOfAttributeValuesFunctor(p.second);
+ }
+
+};
+
+size_t NumberOfAttributeValuesFunctor::count(const FilteringContext& filterContext) const
+{
+ size_t count = 0;
+ pair<multimap<string,Attribute*>::const_iterator,multimap<string,Attribute*>::const_iterator> attrs =
+ filterContext.getAttributes().equal_range(m_attributeID.get());
+ for (; attrs.first != attrs.second; ++attrs.first)
+ count += attrs.first->second->valueCount();
+ return count;
+}