107 lines
3.2 KiB
C++
107 lines
3.2 KiB
C++
//
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// config.cpp
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//
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// Copyright (c) 2019 2020 Andrea Bondavalli. All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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#include <boost/asio.hpp>
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#include <boost/foreach.hpp>
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#include <boost/property_tree/json_parser.hpp>
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#include <boost/property_tree/ptree.hpp>
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#include <exception>
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#include <iostream>
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#include <sstream>
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#include <string>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include "config.hpp"
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#include "interface.hpp"
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#include "json.hpp"
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using namespace boost::asio;
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std::shared_ptr<Config> Config::parse(const std::string& filename) {
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Config config;
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std::ifstream jsonstream(filename);
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if (!jsonstream) {
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std::cerr << "Fatal: error opening config file " << filename << std::endl;
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return nullptr;
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}
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try {
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config = json_to_config(jsonstream);
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} catch (std::exception const& e) {
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std::cerr << "Configuration file " << filename << " : " << e.what()
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<< std::endl;
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return nullptr;
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}
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if (config.log_severity_ < 0 || config.log_severity_ > 5)
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config.log_severity_ = 2;
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if (config.playout_delay_ > 4000)
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config.playout_delay_ = 4000;
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if (config.tic_frame_size_at_1fs_ == 0 ||
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config.tic_frame_size_at_1fs_ > 8192)
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config.tic_frame_size_at_1fs_ = 192;
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if (config.max_tic_frame_size_ == 0 || config.max_tic_frame_size_ > 8192)
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config.max_tic_frame_size_ = 1024;
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if (config.sample_rate_ == 0)
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config.sample_rate_ = 44100;
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if (ip::address_v4::from_string(config.rtp_mcast_base_.c_str()).to_ulong() ==
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INADDR_NONE)
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config.rtp_mcast_base_ = "239.1.0.1";
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auto [mac_addr, mac_str] = get_interface_mac(config.interface_name_);
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if (mac_str.empty()) {
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std::cerr << "Cannot retrieve MAC address for interface "
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<< config.interface_name_ << std::endl;
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return nullptr;
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}
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config.mac_addr_ = mac_addr;
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config.mac_str_ = mac_str;
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auto [ip_addr, ip_str] = get_interface_ip(config.interface_name_);
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if (ip_str.empty()) {
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std::cerr << "Cannot retrieve IPv4 address for interface "
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<< config.interface_name_ << std::endl;
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return nullptr;
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}
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config.ip_addr_ = ip_addr;
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config.ip_str_ = ip_str;
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config.config_filename_ = filename;
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config.need_restart_ = false;
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return std::make_shared<Config>(config);
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}
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bool Config::save(const Config& config, bool need_restart) {
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std::ofstream js(config_filename_);
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if (!js) {
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BOOST_LOG_TRIVIAL(fatal)
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<< "Config:: cannot save to file " << config_filename_;
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return false;
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}
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js << config_to_json(config);
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BOOST_LOG_TRIVIAL(info) << "Config:: file saved";
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need_restart_ = need_restart;
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return true;
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}
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