Move pib service from ndn-cxx to ndn-tools

Code is copied from ndn-cxx:commit:e1c8c4cfffb33dca13c8ca7d7ef04c7401a7cbef,
(gerrit change-id Ieea485c0ebdce9fb9c876cad005cb95fd8e0c899)
with minor changes for changing include paths and building script.

Change-Id: I77b94fe69b20f04c338e7be7387125f709fa9e1a
Refs: #3018
diff --git a/tools/pib/pib-validator.hpp b/tools/pib/pib-validator.hpp
new file mode 100644
index 0000000..9d7a3e1
--- /dev/null
+++ b/tools/pib/pib-validator.hpp
@@ -0,0 +1,81 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2013-2015 Regents of the University of California.
+ *
+ * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
+ *
+ * ndn-cxx library is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * ndn-cxx library 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 Lesser General Public License for more details.
+ *
+ * You should have received copies of the GNU General Public License and GNU Lesser
+ * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ */
+
+#ifndef NDN_PIB_PIB_VALIDATOR_HPP
+#define NDN_PIB_PIB_VALIDATOR_HPP
+
+#include "pib-db.hpp"
+#include "key-cache.hpp"
+#include <ndn-cxx/security/validator.hpp>
+#include <unordered_map>
+
+namespace ndn {
+namespace pib {
+
+
+/*
+ * @brief The validator to verify the command interests to PIB service
+ *
+ * @sa http://redmine.named-data.net/projects/ndn-cxx/wiki/PublicKey_Info_Base
+ */
+class PibValidator : public Validator
+{
+  struct UserKeyCache;
+public:
+  explicit
+  PibValidator(const PibDb& pibDb,
+               size_t maxCacheSize = 1000);
+
+  ~PibValidator();
+
+protected:
+  virtual void
+  checkPolicy(const Interest& interest,
+              int nSteps,
+              const OnInterestValidated& onValidated,
+              const OnInterestValidationFailed& onValidationFailed,
+              std::vector<shared_ptr<ValidationRequest>>& nextSteps);
+
+  virtual void
+  checkPolicy(const Data& data,
+              int nSteps,
+              const OnDataValidated& onValidated,
+              const OnDataValidationFailed& onValidationFailed,
+              std::vector<shared_ptr<ValidationRequest>>& nextSteps);
+
+private:
+
+  const PibDb& m_db;
+
+  bool m_isMgmtReady;
+  std::string m_owner;
+  shared_ptr<IdentityCertificate> m_mgmtCert;
+
+  KeyCache m_keyCache;
+
+  util::signal::ScopedConnection m_mgmtChangeConnection;
+  util::signal::ScopedConnection m_keyDeletedConnection;
+};
+
+} // namespace pib
+} // namespace ndn
+
+#endif // NDN_PIB_PIB_VALIDATOR_HPP