Add support for setting NLSR prefix costs via configuration file and nlsrc
This change alters the nlsr.conf 'advertising' format, as the previous
setup used unnecessary keys which made dynamically adjusting the
stateful conf file difficult.
Incorporates code written by Yanbiao Li.
Change-Id: I3ed5d0a564099be8cc1389ee6acc6f2d04cef889
diff --git a/src/utility/boost-info-editor.cpp b/src/utility/boost-info-editor.cpp
new file mode 100644
index 0000000..bd6893a
--- /dev/null
+++ b/src/utility/boost-info-editor.cpp
@@ -0,0 +1,93 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2014-2025, The University of Memphis,
+ * Regents of the University of California,
+ * Arizona Board of Regents.
+ *
+ * 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 "boost-info-editor.hpp"
+#include "logger.hpp"
+
+#include <boost/property_tree/info_parser.hpp>
+
+namespace nlsr::util::boost_info_editor {
+
+// Incorporates Apache 2.0 licensed code by Yanbiao Li under a compatible license
+boost::property_tree::ptree
+load(const std::string& fileName)
+{
+ boost::property_tree::ptree info;
+ std::ifstream input(fileName);
+
+ // Thrown errors are received at calling function
+ boost::property_tree::info_parser::read_info(input, info);
+
+ input.close();
+ return info;
+}
+
+bool
+save(const std::string& fileName, boost::property_tree::ptree& info)
+{
+ std::ofstream output(fileName);
+ try {
+ write_info(output, info);
+ } catch (const boost::property_tree::info_parser::info_parser_error& error) {
+ return false;
+ }
+ output.close();
+ return true;
+}
+
+bool
+put(const std::string& fileName, const std::string& section, const std::string& value)
+{
+ boost::property_tree::ptree info;
+ try {
+ info = load(fileName);
+ }
+ catch (const boost::property_tree::info_parser::info_parser_error& error) {
+ return false;
+ }
+ info.put(section.c_str(), value.c_str());
+ return save(fileName, info);
+}
+
+bool
+remove(const std::string& fileName, const std::string& section)
+{
+ boost::property_tree::ptree info;
+ try {
+ info = load(fileName);
+ }
+ catch (const boost::property_tree::info_parser::info_parser_error& error) {
+ return false;
+ }
+ std::size_t pos = section.find_last_of(".");
+ if (pos == std::string::npos) {
+ info.erase(section.c_str());
+ }
+ else {
+ boost::optional<boost::property_tree::ptree&> child =
+ info.get_child_optional(section.substr(0, pos));
+ if (child) {
+ child->erase(section.substr(pos + 1));
+ }
+ }
+ return save(fileName, info);
+}
+} // namespace nlsr::util::boost_info_editor