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citra/src/dedicated_room/citra-room.cpp

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// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <chrono>
#include <fstream>
#include <iostream>
#include <memory>
#include <string>
#include <thread>
#include <cryptopp/base64.h>
#ifdef _WIN32
// windows.h needs to be included before shellapi.h
#include <windows.h>
#include <shellapi.h>
#endif
#include "common/common_paths.h"
#include "common/common_types.h"
#include "common/detached_tasks.h"
#include "common/file_util.h"
#include "common/logging/backend.h"
#include "common/logging/log.h"
#include "common/scm_rev.h"
#include "common/string_util.h"
#include "network/announce_multiplayer_session.h"
#include "network/network.h"
#include "network/network_settings.h"
#include "network/room.h"
#include "network/verify_user.h"
#ifdef ENABLE_WEB_SERVICE
#include "web_service/verify_user_jwt.h"
#endif
#undef _UNICODE
#include <getopt.h>
#ifndef _MSC_VER
#include <unistd.h>
#endif
static void PrintHelp(const char* argv0) {
std::cout << "Usage: " << argv0
<< " [options] <filename>\n"
"--room-name The name of the room\n"
"--room-description The room description\n"
"--port The port used for the room\n"
"--max_members The maximum number of players for this room\n"
"--password The password for the room\n"
"--preferred-game The preferred game for this room\n"
"--preferred-game-id The preferred game-id for this room\n"
"--username The username used for announce\n"
"--token The token used for announce\n"
"--web-api-url Citra Web API url\n"
"--ban-list-file The file for storing the room ban list\n"
"--log-file The file for storing the room log\n"
"--enable-citra-mods Allow Citra Community Moderators to moderate on your room\n"
"-h, --help Display this help and exit\n"
"-v, --version Output version information and exit\n";
}
static void PrintVersion() {
std::cout << "Citra dedicated room " << Common::g_scm_branch << " " << Common::g_scm_desc
<< " Libnetwork: " << Network::network_version << std::endl;
}
/// The magic text at the beginning of a citra-room ban list file.
static constexpr char BanListMagic[] = "CitraRoom-BanList-1";
static constexpr char token_delimiter{':'};
static std::string UsernameFromDisplayToken(const std::string& display_token) {
std::string unencoded_display_token;
CryptoPP::StringSource ss(
display_token, true,
new CryptoPP::Base64Decoder(new CryptoPP::StringSink(unencoded_display_token)));
return unencoded_display_token.substr(0, unencoded_display_token.find(token_delimiter));
}
static std::string TokenFromDisplayToken(const std::string& display_token) {
std::string unencoded_display_token;
CryptoPP::StringSource ss(
display_token, true,
new CryptoPP::Base64Decoder(new CryptoPP::StringSink(unencoded_display_token)));
return unencoded_display_token.substr(unencoded_display_token.find(token_delimiter) + 1);
}
static Network::Room::BanList LoadBanList(const std::string& path) {
std::ifstream file;
OpenFStream(file, path, std::ios_base::in);
if (!file || file.eof()) {
std::cout << "Could not open ban list!\n\n";
return {};
}
std::string magic;
std::getline(file, magic);
if (magic != BanListMagic) {
std::cout << "Ban list is not valid!\n\n";
return {};
}
// false = username ban list, true = ip ban list
bool ban_list_type = false;
Network::Room::UsernameBanList username_ban_list;
Network::Room::IPBanList ip_ban_list;
while (!file.eof()) {
std::string line;
std::getline(file, line);
line.erase(std::remove(line.begin(), line.end(), '\0'), line.end());
line = Common::StripSpaces(line);
if (line.empty()) {
// An empty line marks start of the IP ban list
ban_list_type = true;
continue;
}
if (ban_list_type) {
ip_ban_list.emplace_back(line);
} else {
username_ban_list.emplace_back(line);
}
}
return {username_ban_list, ip_ban_list};
}
static void SaveBanList(const Network::Room::BanList& ban_list, const std::string& path) {
std::ofstream file;
OpenFStream(file, path, std::ios_base::out);
if (!file) {
std::cout << "Could not save ban list!\n\n";
return;
}
file << BanListMagic << "\n";
// Username ban list
for (const auto& username : ban_list.first) {
file << username << "\n";
}
file << "\n";
// IP ban list
for (const auto& ip : ban_list.second) {
file << ip << "\n";
}
file.flush();
}
static void InitializeLogging(const std::string& log_file) {
Common::Log::Initialize(log_file);
Common::Log::SetColorConsoleBackendEnabled(true);
Common::Log::Start();
}
/// Application entry point
int main(int argc, char** argv) {
Common::DetachedTasks detached_tasks;
int option_index = 0;
char* endarg;
std::string room_name;
std::string room_description;
std::string password;
std::string preferred_game;
std::string username;
std::string token;
std::string web_api_url;
std::string ban_list_file;
std::string log_file = "citra-room.log";
u64 preferred_game_id = 0;
u16 port = Network::DefaultRoomPort;
u32 max_members = 16;
bool enable_citra_mods = false;
static struct option long_options[] = {
{"room-name", required_argument, 0, 'n'},
{"room-description", required_argument, 0, 'd'},
{"port", required_argument, 0, 'p'},
{"max_members", required_argument, 0, 'm'},
{"password", required_argument, 0, 'w'},
{"preferred-game", required_argument, 0, 'g'},
{"preferred-game-id", required_argument, 0, 'i'},
{"username", optional_argument, 0, 'u'},
{"token", required_argument, 0, 't'},
{"web-api-url", required_argument, 0, 'a'},
{"ban-list-file", required_argument, 0, 'b'},
{"log-file", required_argument, 0, 'l'},
{"enable-citra-mods", no_argument, 0, 'e'},
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'v'},
{0, 0, 0, 0},
};
while (optind < argc) {
int arg = getopt_long(argc, argv, "n:d:p:m:w:g:u:t:a:i:l:hv", long_options, &option_index);
if (arg != -1) {
switch (static_cast<char>(arg)) {
case 'n':
room_name.assign(optarg);
break;
case 'd':
room_description.assign(optarg);
break;
case 'p':
port = static_cast<u16>(strtoul(optarg, &endarg, 0));
break;
case 'm':
max_members = strtoul(optarg, &endarg, 0);
break;
case 'w':
password.assign(optarg);
break;
case 'g':
preferred_game.assign(optarg);
break;
case 'i':
preferred_game_id = strtoull(optarg, &endarg, 16);
break;
case 'u':
username.assign(optarg);
break;
case 't':
token.assign(optarg);
break;
case 'a':
web_api_url.assign(optarg);
break;
case 'b':
ban_list_file.assign(optarg);
break;
case 'l':
log_file.assign(optarg);
break;
case 'e':
enable_citra_mods = true;
break;
case 'h':
PrintHelp(argv[0]);
return 0;
case 'v':
PrintVersion();
return 0;
}
}
}
if (room_name.empty()) {
std::cout << "room name is empty!\n\n";
PrintHelp(argv[0]);
return -1;
}
if (preferred_game.empty()) {
std::cout << "preferred game is empty!\n\n";
PrintHelp(argv[0]);
return -1;
}
if (preferred_game_id == 0) {
std::cout << "preferred-game-id not set!\nThis should get set to allow users to find your "
"room.\nSet with --preferred-game-id id\n\n";
}
if (max_members > Network::MaxConcurrentConnections || max_members < 2) {
std::cout << "max_members needs to be in the range 2 - "
<< Network::MaxConcurrentConnections << "!\n\n";
PrintHelp(argv[0]);
return -1;
}
if (port > 65535) {
std::cout << "port needs to be in the range 0 - 65535!\n\n";
PrintHelp(argv[0]);
return -1;
}
if (ban_list_file.empty()) {
std::cout << "Ban list file not set!\nThis should get set to load and save room ban "
"list.\nSet with --ban-list-file <file>\n\n";
}
bool announce = true;
if (token.empty() && announce) {
announce = false;
std::cout << "token is empty: Hosting a private room\n\n";
}
if (web_api_url.empty() && announce) {
announce = false;
std::cout << "endpoint url is empty: Hosting a private room\n\n";
}
if (announce) {
if (username.empty()) {
std::cout << "Hosting a public room\n\n";
NetSettings::values.web_api_url = web_api_url;
NetSettings::values.citra_username = UsernameFromDisplayToken(token);
username = NetSettings::values.citra_username;
NetSettings::values.citra_token = TokenFromDisplayToken(token);
} else {
std::cout << "Hosting a public room\n\n";
NetSettings::values.web_api_url = web_api_url;
NetSettings::values.citra_username = username;
NetSettings::values.citra_token = token;
}
}
if (!announce && enable_citra_mods) {
enable_citra_mods = false;
std::cout << "Can not enable Citra Moderators for private rooms\n\n";
}
InitializeLogging(log_file);
// Load the ban list
Network::Room::BanList ban_list;
if (!ban_list_file.empty()) {
ban_list = LoadBanList(ban_list_file);
}
std::unique_ptr<Network::VerifyUser::Backend> verify_backend;
if (announce) {
#ifdef ENABLE_WEB_SERVICE
verify_backend =
std::make_unique<WebService::VerifyUserJWT>(NetSettings::values.web_api_url);
#else
std::cout
<< "Citra Web Services is not available with this build: validation is disabled.\n\n";
verify_backend = std::make_unique<Network::VerifyUser::NullBackend>();
#endif
} else {
verify_backend = std::make_unique<Network::VerifyUser::NullBackend>();
}
Network::Init();
if (std::shared_ptr<Network::Room> room = Network::GetRoom().lock()) {
if (!room->Create(room_name, room_description, "", port, password, max_members, username,
preferred_game, preferred_game_id, std::move(verify_backend), ban_list,
enable_citra_mods)) {
std::cout << "Failed to create room: \n\n";
return -1;
}
std::cout << "Room is open. Close with Q+Enter...\n\n";
auto announce_session = std::make_unique<Network::AnnounceMultiplayerSession>();
if (announce) {
announce_session->Start();
}
while (room->GetState() == Network::Room::State::Open) {
std::string in;
std::cin >> in;
if (in.size() > 0) {
break;
}
std::this_thread::sleep_for(std::chrono::milliseconds(100));
}
if (announce) {
announce_session->Stop();
}
announce_session.reset();
// Save the ban list
if (!ban_list_file.empty()) {
SaveBanList(room->GetBanList(), ban_list_file);
}
room->Destroy();
}
Network::Shutdown();
detached_tasks.WaitForAllTasks();
return 0;
}
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