/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2014-2019,  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,
 *                           The University of Memphis.
 *
 * 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/>.
 */

#include "mgmt/general-config-section.hpp"
#include "core/config-file.hpp"
#include "core/privilege-helper.hpp"

#include "tests/test-common.hpp"
#include "tests/daemon/global-io-fixture.hpp"

#include <cstring>

namespace nfd {
namespace general {
namespace tests {

using namespace nfd::tests;

class GeneralConfigSectionFixture : public GlobalIoFixture
{
public:
  GeneralConfigSectionFixture()
  {
    setConfigFile(configFile);
  }

#ifdef HAVE_PRIVILEGE_DROP_AND_ELEVATE
  ~GeneralConfigSectionFixture()
  {
    // revert changes to s_normalUid/s_normalGid, if any
    PrivilegeHelper::s_normalUid = ::geteuid();
    PrivilegeHelper::s_normalGid = ::getegid();
  }
#endif // HAVE_PRIVILEGE_DROP_AND_ELEVATE

protected:
  ConfigFile configFile;
};

BOOST_AUTO_TEST_SUITE(Mgmt)
BOOST_FIXTURE_TEST_SUITE(TestGeneralConfigSection, GeneralConfigSectionFixture)

BOOST_AUTO_TEST_CASE(EmptyConfig)
{
  const std::string CONFIG = R"CONFIG(
    general
    {
    }
  )CONFIG";

  configFile.parse(CONFIG, true, "test-general-config-section");

  BOOST_CHECK_EQUAL(PrivilegeHelper::s_normalUid, PrivilegeHelper::s_privilegedUid);
  BOOST_CHECK_EQUAL(PrivilegeHelper::s_normalGid, PrivilegeHelper::s_privilegedGid);
}

#ifdef HAVE_PRIVILEGE_DROP_AND_ELEVATE

BOOST_AUTO_TEST_CASE(UserConfig)
{
  const std::string CONFIG = R"CONFIG(
    general
    {
      user daemon
    }
  )CONFIG";

  configFile.parse(CONFIG, true, "test-general-config-section");

  BOOST_CHECK_NE(PrivilegeHelper::s_normalUid, PrivilegeHelper::s_privilegedUid);
  BOOST_CHECK_EQUAL(PrivilegeHelper::s_normalGid, PrivilegeHelper::s_privilegedGid);
}

BOOST_AUTO_TEST_CASE(GroupConfig)
{
  const std::string CONFIG = R"CONFIG(
    general
    {
      group daemon
    }
  )CONFIG";

  configFile.parse(CONFIG, true, "test-general-config-section");

  BOOST_CHECK_EQUAL(PrivilegeHelper::s_normalUid, PrivilegeHelper::s_privilegedUid);
  BOOST_CHECK_NE(PrivilegeHelper::s_normalGid, PrivilegeHelper::s_privilegedGid);
}

BOOST_AUTO_TEST_CASE(UserAndGroupConfig)
{
  const std::string CONFIG = R"CONFIG(
    general
    {
      user daemon
      group daemon
    }
  )CONFIG";

  configFile.parse(CONFIG, true, "test-general-config-section");

  BOOST_CHECK_NE(PrivilegeHelper::s_normalUid, PrivilegeHelper::s_privilegedUid);
  BOOST_CHECK_NE(PrivilegeHelper::s_normalGid, PrivilegeHelper::s_privilegedGid);
}

#endif // HAVE_PRIVILEGE_DROP_AND_ELEVATE

BOOST_AUTO_TEST_CASE(InvalidUserConfig)
{
  const std::string CONFIG = R"CONFIG(
    general
    {
      user
    }
  )CONFIG";

  BOOST_CHECK_EXCEPTION(configFile.parse(CONFIG, true, "test-general-config-section"),
                        ConfigFile::Error,
                        [] (const ConfigFile::Error& e) {
                          return std::strcmp(e.what(),
                                             "Invalid value for 'user' in section 'general'") == 0;
                        });
}

BOOST_AUTO_TEST_CASE(InvalidGroupConfig)
{
  const std::string CONFIG = R"CONFIG(
    general
    {
      group
    }
  )CONFIG";

  BOOST_CHECK_EXCEPTION(configFile.parse(CONFIG, true, "test-general-config-section"),
                        ConfigFile::Error,
                        [] (const ConfigFile::Error& e) {
                          return std::strcmp(e.what(),
                                             "Invalid value for 'group' in section 'general'") == 0;
                        });
}

BOOST_AUTO_TEST_SUITE_END() // TestGeneralConfigSection
BOOST_AUTO_TEST_SUITE_END() // Mgmt

} // namespace tests
} // namespace general
} // namespace nfd