nlsr: discover Faces from NFD
refs: #2954
Change-Id: I072972d88bce0e1012e96f33577657048b7df1e1
diff --git a/src/validator.cpp b/src/validator.cpp
new file mode 100644
index 0000000..a73c9ee
--- /dev/null
+++ b/src/validator.cpp
@@ -0,0 +1,89 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2017, The University of Memphis,
+ * Regents of the University of California
+ *
+ * This file is part of NLSR (Named-data Link State Routing).
+ * See AUTHORS.md for complete list of NLSR authors and contributors.
+ *
+ * NLSR is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * NLSR is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * NLSR, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#include "validator.hpp"
+
+namespace nlsr {
+
+void
+Validator::checkPolicy(const ndn::Data& data, int nSteps, const ndn::OnDataValidated& onValidated,
+ const ndn::OnDataValidationFailed& onValidationFailed,
+ std::vector<shared_ptr<ndn::ValidationRequest>>& nextSteps)
+{
+ if (!m_shouldValidate) {
+ onValidated(data.shared_from_this());
+ }
+ else {
+ ValidatorConfig::checkPolicy(data, nSteps, onValidated, onValidationFailed, nextSteps);
+ }
+}
+
+void
+Validator::afterCheckPolicy(const NextSteps& nextSteps, const OnFailure& onFailure)
+{
+ if (m_face == nullptr) {
+ onFailure("Require more information to validate the packet!");
+ return;
+ }
+
+ for (const std::shared_ptr<ndn::ValidationRequest>& request : nextSteps) {
+
+ ndn::Interest& interest = request->m_interest;
+
+ // Look for certificate in permanent storage
+ std::shared_ptr<const ndn::IdentityCertificate> cert = m_certStore.find(interest.getName());
+
+ if (cert != nullptr) {
+ // If the certificate is found, no reason to express interest
+ std::shared_ptr<ndn::Data> data = std::make_shared<ndn::Data>(interest.getName());
+ data->setContent(cert->wireEncode());
+
+ Validator::onData(interest, *data, request);
+ }
+ else {
+ // Prepend broadcast prefix to interest name
+ ndn::Name broadcastName = m_broadcastPrefix;
+ broadcastName.append(interest.getName());
+ interest.setName(broadcastName);
+
+ // Attempt to fetch the certificate
+ m_face->expressInterest(interest,
+ std::bind(&Validator::onData, this, _1, _2, request),
+ std::bind(&Validator::onTimeout, // Nack
+ this, _1, request->m_nRetries,
+ onFailure,
+ request),
+ std::bind(&Validator::onTimeout,
+ this, _1, request->m_nRetries,
+ onFailure,
+ request));
+ }
+ }
+}
+
+std::shared_ptr<const ndn::Data>
+Validator::preCertificateValidation(const ndn::Data& data)
+{
+ std::shared_ptr<ndn::Data> internalData = std::make_shared<ndn::Data>();
+ internalData->wireDecode(data.getContent().blockFromValue());
+ return internalData;
+}
+
+} // namespace nlsr