Genericize string values and scopes, add value/scope functors.

[shibboleth/sp.git] / shibsp / attribute / filtering / impl / AttributeValueStringFunctor.cpp

diff --git a/shibsp/attribute/filtering/impl/AttributeValueStringFunctor.cpp b/shibsp/attribute/filtering/impl/AttributeValueStringFunctor.cpp
new file mode 100644 (file)
index 0000000..c969ac5
--- /dev/null
+++ b/shibsp/attribute/filtering/impl/AttributeValueStringFunctor.cpp
@@ -0,0 +1,103 @@
+/*
+ *  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.
+ */
+
+/**
+ * AttributeValueStringFunctor.cpp
+ * 
+ * A match function that matches the value of an attribute against the specified value.
+ */
+
+#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 value[] =        UNICODE_LITERAL_5(v,a,l,u,e);
+
+    /**
+     * A match function that matches the value of an attribute against the specified value.
+     */
+    class SHIBSP_DLLLOCAL AttributeValueStringFunctor : public MatchFunctor
+    {
+        xmltooling::auto_ptr_char m_value;
+        xmltooling::auto_ptr_char m_attributeID;
+
+        bool hasValue(const FilteringContext& filterContext) const;
+        bool matches(const Attribute& attribute, size_t index) const;
+
+    public:
+        AttributeValueStringFunctor(const DOMElement* e)
+            : m_value(e ? e->getAttributeNS(NULL,value) : NULL), m_attributeID(e ? e->getAttributeNS(NULL,attributeID) : NULL) {
+            if (!m_value.get() || !*m_value.get())
+                throw ConfigurationException("AttributeValueString MatchFunctor requires non-empty value attribute.");
+        }
+
+        bool evaluatePolicyRequirement(const FilteringContext& filterContext) const {
+            if (!m_attributeID.get() || !*m_attributeID.get())
+                throw AttributeFilteringException("No attributeID specified.");
+            return hasValue(filterContext);
+        }
+
+        bool evaluatePermitValue(const FilteringContext& filterContext, const Attribute& attribute, size_t index) const {
+            if (!XMLString::equals(m_attributeID.get(), attribute.getId()))
+                return hasValue(filterContext);
+            return matches(attribute, index);
+        }
+    };
+
+    MatchFunctor* SHIBSP_DLLLOCAL AttributeValueStringFactory(const std::pair<const FilterPolicyContext*,const DOMElement*>& p)
+    {
+        return new AttributeValueStringFunctor(p.second);
+    }
+
+};
+
+bool AttributeValueStringFunctor::hasValue(const FilteringContext& filterContext) const
+{
+    size_t count;
+    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();
+        for (size_t index = 0; index < count; ++index) {
+            if (matches(*(attrs.first->second), index))
+                return true;
+        }
+    }
+    return false;
+}
+
+bool AttributeValueStringFunctor::matches(const Attribute& attribute, size_t index) const
+{
+    const char* val = attribute.getString(index);
+    if (!val)
+        return false;
+    if (attribute.isCaseSensitive())
+        return !strcmp(m_value.get(), val);
+
+#ifdef HAVE_STRCASECMP
+    return !strcasecmp(m_value.get(), val);
+#else
+    return !stricmp(m_value.get(), val);
+#endif
+}