+/*
+ * Copyright 2001-2006 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.
+ */
+
+/**
+ * BlacklistMetadataFilter.cpp
+ *
+ * Removes blacklisted entities from a metadata instance
+ */
+
+#include "internal.h"
+#include "saml2/metadata/MetadataFilter.h"
+#include "signature/SignatureProfileValidator.h"
+
+#include <log4cpp/Category.hh>
+
+#include <xmltooling/util/NDC.h>
+#include <xmltooling/signature/SignatureValidator.h>
+
+using namespace opensaml::saml2md;
+using namespace opensaml;
+using namespace xmlsignature;
+using namespace xmltooling;
+using namespace log4cpp;
+using namespace std;
+
+namespace opensaml {
+ namespace saml2md {
+
+ class SAML_DLLLOCAL SignatureMetadataFilter : public MetadataFilter
+ {
+ public:
+ SignatureMetadataFilter(const DOMElement* e);
+ ~SignatureMetadataFilter() {
+ delete m_sigValidator;
+ }
+
+ const char* getId() const { return SIGNATURE_METADATA_FILTER; }
+ void doFilter(XMLObject& xmlObject) const;
+
+ private:
+ void doFilter(EntitiesDescriptor& entities, bool rootObject=false) const;
+ void verifySignature(Signature* sig) const {
+ if (sig) {
+ m_profileValidator.validate(sig);
+ m_sigValidator->validate(sig);
+ }
+ }
+
+ SignatureProfileValidator m_profileValidator;
+ SignatureValidator* m_sigValidator;
+ };
+
+ MetadataFilter* SAML_DLLLOCAL SignatureMetadataFilterFactory(const DOMElement* const & e)
+ {
+ return new SignatureMetadataFilter(e);
+ }
+
+ };
+};
+
+static const XMLCh GenericKeyResolver[] = UNICODE_LITERAL_11(K,e,y,R,e,s,o,l,v,e,r);
+static const XMLCh type[] = UNICODE_LITERAL_4(t,y,p,e);
+
+SignatureMetadataFilter::SignatureMetadataFilter(const DOMElement* e) : m_sigValidator(NULL)
+{
+ e = XMLHelper::getFirstChildElement(e, GenericKeyResolver);
+ auto_ptr_char t(e ? e->getAttributeNS(NULL,type) : NULL);
+ if (t.get()) {
+ auto_ptr<KeyResolver> kr(XMLToolingConfig::getConfig().KeyResolverManager.newPlugin(t.get(),e));
+ m_sigValidator = new SignatureValidator(kr.get());
+ kr.release();
+ }
+ else
+ throw MetadataFilterException("missing <KeyResolver> element, or no type attribute found");
+}
+
+void SignatureMetadataFilter::doFilter(XMLObject& xmlObject) const
+{
+#ifdef _DEBUG
+ NDC ndc("doFilter");
+#endif
+
+ try {
+ EntitiesDescriptor& entities = dynamic_cast<EntitiesDescriptor&>(xmlObject);
+ doFilter(entities, true);
+ return;
+ }
+ catch (bad_cast) {
+ }
+
+ try {
+ EntityDescriptor& entity = dynamic_cast<EntityDescriptor&>(xmlObject);
+ if (!entity.getSignature())
+ throw MetadataFilterException("Root metadata element was unsigned.");
+ verifySignature(entity.getSignature());
+ }
+ catch (bad_cast) {
+ }
+
+ throw MetadataFilterException("SignatureMetadataFilter was given an improper metadata instance to filter.");
+}
+
+void SignatureMetadataFilter::doFilter(EntitiesDescriptor& entities, bool rootObject) const
+{
+ Category& log=Category::getInstance(SAML_LOGCAT".Metadata");
+
+ Signature* sig = entities.getSignature();
+ if (!sig && rootObject)
+ throw MetadataFilterException("Root metadata element was unsigned.");
+ verifySignature(sig);
+
+ VectorOf(EntityDescriptor) v=entities.getEntityDescriptors();
+ for (VectorOf(EntityDescriptor)::size_type i=0; i<v.size(); ) {
+ try {
+ verifySignature(v[i]->getSignature());
+ i++;
+ }
+ catch (XMLToolingException& e) {
+ auto_ptr_char id(v[i]->getEntityID());
+ log.info("filtering out entity (%s) after failed signature check: ", id.get(), e.what());
+ v.erase(v.begin() + i);
+ }
+ }
+
+ VectorOf(EntitiesDescriptor) w=entities.getEntitiesDescriptors();
+ for (VectorOf(EntitiesDescriptor)::size_type j=0; j<w.size(); ) {
+ try {
+ verifySignature(w[j]->getSignature());
+ j++;
+ }
+ catch (XMLToolingException& e) {
+ auto_ptr_char name(w[j]->getName());
+ log.info("filtering out group (%s) after failed signature check: ", name.get(), e.what());
+ w.erase(w.begin() + j);
+ }
+ }
+}
projects / shibboleth / cpp-opensaml.git / commitdiff