daemon: add NameServer
Change-Id: I64b82a0e9351bcc15691279470c807399480a474
diff --git a/src/daemon/config-file.hpp b/src/daemon/config-file.hpp
new file mode 100644
index 0000000..fca4af2
--- /dev/null
+++ b/src/daemon/config-file.hpp
@@ -0,0 +1,150 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014, Regents of the University of California.
+ *
+ * This file is part of NDNS (Named Data Networking Domain Name Service).
+ * See AUTHORS.md for complete list of NDNS authors and contributors.
+ *
+ * NDNS 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.
+ *
+ * NDNS 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
+ * NDNS, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Copyright (c) 2014 Regents of the University of California,
+ * Arizona Board of Regents,
+ * Colorado State University,
+ * University Pierre & Marie Curie, Sorbonne University,
+ * Washington University in St. Louis,
+ * Beijing Institute of Technology
+ *
+ * This file is part of NFD (Named Data Networking Forwarding Daemon).
+ * See AUTHORS.md for complete list of NFD authors and contributors.
+ *
+ * NFD 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.
+ *
+ * NFD 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
+ * NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#ifndef NDNS_DAEMON_CONFIG_FILE_HPP
+#define NDNS_DAEMON_CONFIG_FILE_HPP
+
+#include "common.hpp"
+#include <functional>
+#include <map>
+#include <boost/noncopyable.hpp>
+#include <boost/property_tree/ptree.hpp>
+
+
+namespace ndn {
+namespace ndns {
+
+typedef boost::property_tree::ptree ConfigSection;
+
+/// \brief callback for config file sections
+typedef std::function<void(const ConfigSection& /*section*/,
+ bool /*isDryRun*/,
+ const std::string& /*filename*/)> ConfigSectionHandler;
+
+/// \brief callback for config file sections without a subscribed handler
+typedef std::function<void(const std::string& /*filename*/,
+ const std::string& /*sectionName*/,
+ const ConfigSection& /*section*/,
+ bool /*isDryRun*/)> UnknownConfigSectionHandler;
+
+class ConfigFile : boost::noncopyable
+{
+public:
+
+ class Error : public std::runtime_error
+ {
+ public:
+ explicit
+ Error(const std::string& what)
+ : std::runtime_error(what)
+ {
+
+ }
+ };
+
+ ConfigFile(UnknownConfigSectionHandler unknownSectionCallback = throwErrorOnUnknownSection);
+
+ static void
+ throwErrorOnUnknownSection(const std::string& filename,
+ const std::string& sectionName,
+ const ConfigSection& section,
+ bool isDryRun);
+
+ static void
+ ignoreUnknownSection(const std::string& filename,
+ const std::string& sectionName,
+ const ConfigSection& section,
+ bool isDryRun);
+
+ /// \brief setup notification of configuration file sections
+ void
+ addSectionHandler(const std::string& sectionName,
+ ConfigSectionHandler subscriber);
+
+
+ /**
+ * \param filename file to parse
+ * \param isDryRun true if performing a dry run of configuration, false otherwise
+ * \throws ConfigFile::Error if file not found
+ * \throws ConfigFile::Error if parse error
+ */
+ void
+ parse(const std::string& filename, bool isDryRun);
+
+ /**
+ * \param input configuration (as a string) to parse
+ * \param isDryRun true if performing a dry run of configuration, false otherwise
+ * \param filename optional convenience argument to provide more detailed error messages
+ * \throws ConfigFile::Error if file not found
+ * \throws ConfigFile::Error if parse error
+ */
+ void
+ parse(const std::string& input, bool isDryRun, const std::string& filename);
+
+ /**
+ * \param input stream to parse
+ * \param isDryRun true if performing a dry run of configuration, false otherwise
+ * \param filename optional convenience argument to provide more detailed error messages
+ * \throws ConfigFile::Error if parse error
+ */
+ void
+ parse(std::istream& input, bool isDryRun, const std::string& filename);
+
+private:
+
+ void
+ process(bool isDryRun, const std::string& filename);
+
+private:
+ UnknownConfigSectionHandler m_unknownSectionCallback;
+
+ typedef std::map<std::string, ConfigSectionHandler> SubscriptionTable;
+
+ SubscriptionTable m_subscriptions;
+
+ ConfigSection m_global;
+};
+
+} // namespace ndns
+} // namespace ndn
+
+#endif // NDNS_DAEMON_CONFIG_FILE_HPP