| /* |
| * Copyright (C) 2023 Savoir-faire Linux Inc. |
| * |
| * This program 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. |
| * |
| * This program 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 this program. If not, see <https://www.gnu.org/licenses/>. |
| */ |
| #include "dvpn.h" |
| #include "common.h" |
| #include "dhtnet_crtmgr/dhtnet_crtmgr.h" |
| |
| #include <string> |
| #include <vector> |
| #include <iostream> |
| #include <unistd.h> |
| #include <getopt.h> |
| #if __has_include(<fmt/std.h>) |
| #include <fmt/std.h> |
| #else |
| #include <fmt/ostream.h> |
| #endif |
| #include <netinet/in.h> |
| #include <yaml-cpp/yaml.h> |
| #include <fstream> |
| |
| struct dhtvpn_params |
| { |
| bool help {false}; |
| bool version {false}; |
| bool listen {false}; |
| std::filesystem::path path {}; |
| std::string bootstrap {}; |
| dht::InfoHash peer_id {}; |
| std::string turn_host {}; |
| std::string turn_user {}; |
| std::string turn_pass {}; |
| std::string turn_realm {}; |
| std::string configuration_file {}; |
| std::string ca {}; |
| std::string dvpn_configuration_file {}; |
| bool anonymous_cnx {false}; |
| }; |
| |
| static const constexpr struct option long_options[] |
| = {{"help", no_argument, nullptr, 'h'}, |
| {"version", no_argument, nullptr, 'v'}, |
| {"listen", no_argument, nullptr, 'l'}, |
| {"bootstrap", required_argument, nullptr, 'b'}, |
| {"id_path", required_argument, nullptr, 'I'}, |
| {"turn_host", required_argument, nullptr, 't'}, |
| {"turn_user", required_argument, nullptr, 'u'}, |
| {"turn_pass", required_argument, nullptr, 'w'}, |
| {"turn_realm", required_argument, nullptr, 'r'}, |
| {"vpn_configuration_file", required_argument, nullptr, 'c'}, |
| {"CA", required_argument, nullptr, 'C'}, |
| {"dvpn_configuration_file", required_argument, nullptr, 'd'}, |
| {"anonymous", no_argument, nullptr, 'a'}, |
| {nullptr, 0, nullptr, 0}}; |
| |
| dhtvpn_params |
| parse_args(int argc, char** argv) |
| { |
| dhtvpn_params params; |
| int opt; |
| while ((opt = getopt_long(argc, argv, "hvlw:r:u:t:I:b:c:C:d:", long_options, nullptr)) != -1) { |
| switch (opt) { |
| case 'h': |
| params.help = true; |
| break; |
| case 'v': |
| params.version = true; |
| break; |
| case 'l': |
| params.listen = true; |
| break; |
| case 'b': |
| params.bootstrap = optarg; |
| break; |
| case 'I': |
| params.path = optarg; |
| break; |
| case 't': |
| params.turn_host = optarg; |
| break; |
| case 'u': |
| params.turn_user = optarg; |
| break; |
| case 'w': |
| params.turn_pass = optarg; |
| break; |
| case 'r': |
| params.turn_realm = optarg; |
| break; |
| case 'c': |
| params.configuration_file = optarg; |
| break; |
| case 'C': |
| params.ca = optarg; |
| break; |
| case 'd': |
| params.dvpn_configuration_file = optarg; |
| break; |
| case 'a': |
| params.anonymous_cnx = true; |
| break; |
| default: |
| std::cerr << "Invalid option" << std::endl; |
| exit(EXIT_FAILURE); |
| } |
| } |
| // extract values from dvpn yaml file |
| if (!params.dvpn_configuration_file.empty()) { |
| printf("read configuration file: %s\n", params.dvpn_configuration_file.c_str()); |
| std::ifstream config_file(params.dvpn_configuration_file); |
| if (!config_file.is_open()) { |
| std::cerr << "Error: Could not open configuration file.\n"; |
| } else { |
| YAML::Node config = YAML::Load(config_file); |
| if (config["bootstrap"] && params.bootstrap.empty()) { |
| params.bootstrap = config["bootstrap"].as<std::string>(); |
| } |
| if (config["id_path"] && params.path.empty()) { |
| params.path = config["id_path"].as<std::string>(); |
| } |
| if (config["turn_host"] && params.turn_host.empty()) { |
| params.turn_host = config["turn_host"].as<std::string>(); |
| } |
| if (config["turn_user"] && params.turn_user.empty()) { |
| params.turn_user = config["turn_user"].as<std::string>(); |
| } |
| if (config["turn_pass"] && params.turn_pass.empty()) { |
| params.turn_pass = config["turn_pass"].as<std::string>(); |
| } |
| if (config["turn_realm"] && params.turn_realm.empty()) { |
| params.turn_realm = config["turn_realm"].as<std::string>(); |
| } |
| if (config["CA"] && params.ca.empty()) { |
| params.ca = config["CA"].as<std::string>(); |
| } |
| if (config["configuration_file"] && params.configuration_file.empty()) { |
| params.configuration_file = config["configuration_file"].as<std::string>(); |
| } |
| if (config["anonymous"] && !params.anonymous_cnx) { |
| params.anonymous_cnx = config["anonymous"].as<bool>(); |
| } |
| } |
| } |
| |
| // If not listening, the peer_id argument is required |
| if (!params.listen && !params.help && !params.version) { |
| if (optind < argc) { |
| params.peer_id = dht::InfoHash(argv[optind]); |
| optind++; // Move to the next argument |
| } else { |
| std::cerr << "Error: Missing peer_id argument.\n"; |
| exit(EXIT_FAILURE); |
| } |
| } |
| return params; |
| } |
| |
| static void |
| setSipLogLevel() |
| { |
| int level = 0; |
| if (char* envvar = getenv("SIPLOGLEVEL")) { |
| // From 0 (min) to 6 (max) |
| level = std::clamp(std::stoi(envvar), 0, 6); |
| } |
| |
| pj_log_set_level(level); |
| pj_log_set_log_func([](int level, const char* data, int len) { |
| fmt::print("{}", std::string_view(data, len)); |
| }); |
| } |
| |
| int |
| main(int argc, char** argv) |
| { |
| setSipLogLevel(); |
| auto params = parse_args(argc, argv); |
| |
| if (params.help) { |
| fmt::print( |
| "Usage: dvpn [options] [PEER_ID]\n" |
| "\nOptions:\n" |
| " -h, --help Show this help message and exit.\n" |
| " -v, --version Display the program version.\n" |
| " -l, --listen Start the program in listen mode.\n" |
| " -b, --bootstrap Specify the bootstrap option with an argument.\n" |
| " -I, --id_path Specify the id_path option with an argument.\n" |
| " -t, --turn_host Specify the turn_host option with an argument.\n" |
| " -u, --turn_user Specify the turn_user option with an argument.\n" |
| " -w, --turn_pass Specify the turn_pass option with an argument.\n" |
| " -r, --turn_realm Specify the turn_realm option with an argument.\n" |
| " -c, --vpn_configuration_file Specify the vpn_configuration_file path option with an argument.\n" |
| " -C, --CA Specify the CA path option with an argument.\n" |
| " -d, --dvpn_configuration_file Specify the dvpn_configuration_file path option with an argument.\n" |
| " -a, --anonymous Specify the anonymous option with an argument.\n" |
| "\n"); |
| return EXIT_SUCCESS; |
| } |
| if (params.version) { |
| fmt::print("dvpn v1.0\n"); |
| return EXIT_SUCCESS; |
| } |
| |
| fmt::print("dvpn 1.0\n"); |
| |
| auto identity = dhtnet::loadIdentity(params.path, params.ca); |
| fmt::print("Loaded identity: {} from {}\n", identity.second->getId(), params.path); |
| |
| std::unique_ptr<dhtnet::Dvpn> dvpn; |
| if (params.listen) { |
| // create dvpn instance |
| dvpn = std::make_unique<dhtnet::DvpnServer>(params.path, |
| identity, |
| params.bootstrap, |
| params.turn_host, |
| params.turn_user, |
| params.turn_pass, |
| params.turn_realm, |
| params.configuration_file, |
| params.anonymous_cnx); |
| } else { |
| dvpn = std::make_unique<dhtnet::DvpnClient>(params.peer_id, |
| params.path, |
| identity, |
| params.bootstrap, |
| params.turn_host, |
| params.turn_user, |
| params.turn_pass, |
| params.turn_realm, |
| params.configuration_file); |
| } |
| dvpn->run(); |
| return EXIT_SUCCESS; |
| } |