NS-3 based Named Data Networking (NDN) simulator
ndnSIM 2.5: NDN, CCN, CCNx, content centric networks
API Documentation
general-config-section.cpp
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2014-2018, Regents of the University of California,
4  * Arizona Board of Regents,
5  * Colorado State University,
6  * University Pierre & Marie Curie, Sorbonne University,
7  * Washington University in St. Louis,
8  * Beijing Institute of Technology,
9  * The University of Memphis.
10  *
11  * This file is part of NFD (Named Data Networking Forwarding Daemon).
12  * See AUTHORS.md for complete list of NFD authors and contributors.
13  *
14  * NFD is free software: you can redistribute it and/or modify it under the terms
15  * of the GNU General Public License as published by the Free Software Foundation,
16  * either version 3 of the License, or (at your option) any later version.
17  *
18  * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
19  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
20  * PURPOSE. See the GNU General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License along with
23  * NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
24  */
25 
28 
29 namespace nfd {
30 namespace general {
31 
32 static void
33 onConfig(const ConfigSection& section, bool isDryRun, const std::string&)
34 {
35  // general
36  // {
37  // user "ndn-user"
38  // group "ndn-user"
39  // }
40 
41  std::string user;
42  std::string group;
43 
44  for (const auto& i : section) {
45  if (i.first == "user") {
46  try {
47  user = i.second.get_value<std::string>("user");
48 
49  if (user.empty()) {
50  BOOST_THROW_EXCEPTION(ConfigFile::Error("Invalid value for \"user\" in \"general\" section"));
51  }
52  }
53  catch (const boost::property_tree::ptree_error&) {
54  BOOST_THROW_EXCEPTION(ConfigFile::Error("Invalid value for \"user\" in \"general\" section"));
55  }
56  }
57  else if (i.first == "group") {
58  try {
59  group = i.second.get_value<std::string>("group");
60 
61  if (group.empty()) {
62  BOOST_THROW_EXCEPTION(ConfigFile::Error("Invalid value for \"group\" in \"general\" section"));
63  }
64  }
65  catch (const boost::property_tree::ptree_error&) {
66  BOOST_THROW_EXCEPTION(ConfigFile::Error("Invalid value for \"group\" in \"general\" section"));
67  }
68  }
69  }
70 
71  PrivilegeHelper::initialize(user, group);
72 }
73 
74 void
76 {
77  config.addSectionHandler("general", &onConfig);
78 }
79 
80 } // namespace general
81 } // namespace nfd
void setConfigFile(ConfigFile &config)
configuration file parsing utility
Definition: config-file.hpp:57
static void initialize(const std::string &userName, const std::string &groupName)
Copyright (c) 2011-2015 Regents of the University of California.
Definition: ndn-common.hpp:40
void addSectionHandler(const std::string &sectionName, ConfigSectionHandler subscriber)
setup notification of configuration file sections
Definition: config-file.cpp:76
boost::property_tree::ptree ConfigSection
a config file section
static void onConfig(const ConfigSection &section, bool isDryRun, const std::string &)