dedicated_room: Initial implementation

4 files changed, 418 insertions, 0 deletions

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index fc177fa52..54de1dc94 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -162,6 +162,7 @@ add_subdirectory(video_core)
 add_subdirectory(network)
 add_subdirectory(input_common)
 add_subdirectory(shader_recompiler)
+add_subdirectory(dedicated_room)
 
 if (YUZU_TESTS)
     add_subdirectory(tests)
diff --git a/src/dedicated_room/CMakeLists.txt b/src/dedicated_room/CMakeLists.txt
new file mode 100644
index 000000000..7a29bd015
--- /dev/null
+++ b/src/dedicated_room/CMakeLists.txt
@@ -0,0 +1,24 @@
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${PROJECT_SOURCE_DIR}/CMakeModules)
+
+add_executable(yuzu-room
+    yuzu-room.cpp
+    yuzu-room.rc
+)
+
+create_target_directory_groups(yuzu-room)
+
+target_link_libraries(yuzu-room PRIVATE common core network)
+if (ENABLE_WEB_SERVICE)
+    target_compile_definitions(yuzu-room PRIVATE -DENABLE_WEB_SERVICE)
+    target_link_libraries(yuzu-room PRIVATE web_service)
+endif()
+
+target_link_libraries(yuzu-room PRIVATE mbedtls)
+if (MSVC)
+    target_link_libraries(yuzu-room PRIVATE getopt)
+endif()
+target_link_libraries(yuzu-room PRIVATE ${PLATFORM_LIBRARIES} Threads::Threads)
+
+if(UNIX AND NOT APPLE)
+    install(TARGETS yuzu-room RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}/bin")
+endif()
diff --git a/src/dedicated_room/yuzu-room.cpp b/src/dedicated_room/yuzu-room.cpp
new file mode 100644
index 000000000..9c1bfaab9
--- /dev/null
+++ b/src/dedicated_room/yuzu-room.cpp
@@ -0,0 +1,376 @@
+// 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 <regex>
+#include <string>
+#include <thread>
+
+#ifdef _WIN32
+// windows.h needs to be included before shellapi.h
+#include <windows.h>
+
+#include <shellapi.h>
+#endif
+
+#include <mbedtls/base64.h>
+#include "common/common_types.h"
+#include "common/detached_tasks.h"
+#include "common/fs/file.h"
+#include "common/fs/fs.h"
+#include "common/fs/path_util.h"
+#include "common/logging/backend.h"
+#include "common/logging/log.h"
+#include "common/scm_rev.h"
+#include "common/settings.h"
+#include "common/string_util.h"
+#include "core/announce_multiplayer_session.h"
+#include "core/core.h"
+#include "network/network.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       yuzu 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-yuzu-mods Allow yuzu 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 << "yuzu dedicated room " << Common::g_scm_branch << " " << Common::g_scm_desc
+              << " Libnetwork: " << Network::network_version << std::endl;
+}
+
+/// The magic text at the beginning of a yuzu-room ban list file.
+static constexpr char BanListMagic[] = "YuzuRoom-BanList-1";
+
+static constexpr char token_delimiter{':'};
+
+static std::string UsernameFromDisplayToken(const std::string& display_token) {
+    std::size_t outlen;
+
+    std::array<unsigned char, 512> output;
+    mbedtls_base64_decode(output.data(), output.size(), &outlen,
+                          reinterpret_cast<const unsigned char*>(display_token.c_str()),
+                          display_token.length());
+    std::string decoded_display_token(reinterpret_cast<char*>(&output), outlen);
+    return decoded_display_token.substr(0, decoded_display_token.find(token_delimiter));
+}
+
+static std::string TokenFromDisplayToken(const std::string& display_token) {
+    std::size_t outlen;
+
+    std::array<unsigned char, 512> output;
+    mbedtls_base64_decode(output.data(), output.size(), &outlen,
+                          reinterpret_cast<const unsigned char*>(display_token.c_str()),
+                          display_token.length());
+    std::string decoded_display_token(reinterpret_cast<char*>(&output), outlen);
+    return decoded_display_token.substr(decoded_display_token.find(token_delimiter) + 1);
+}
+
+static Network::Room::BanList LoadBanList(const std::string& path) {
+    std::ifstream file;
+    Common::FS::OpenFileStream(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;
+    Common::FS::OpenFileStream(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();
+    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 = "yuzu-room.log";
+    u64 preferred_game_id = 0;
+    u32 port = Network::DefaultRoomPort;
+    u32 max_members = 16;
+    bool enable_yuzu_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-yuzu-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 = 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_yuzu_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";
+            Settings::values.web_api_url = web_api_url;
+            Settings::values.yuzu_username = UsernameFromDisplayToken(token);
+            username = Settings::values.yuzu_username.GetValue();
+            Settings::values.yuzu_token = TokenFromDisplayToken(token);
+        } else {
+            std::cout << "Hosting a public room\n\n";
+            Settings::values.web_api_url = web_api_url;
+            Settings::values.yuzu_username = username;
+            Settings::values.yuzu_token = token;
+        }
+    }
+    if (!announce && enable_yuzu_mods) {
+        enable_yuzu_mods = false;
+        std::cout << "Can not enable yuzu 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>(Settings::values.web_api_url.GetValue());
+#else
+        std::cout
+            << "yuzu 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>();
+    }
+
+    Core::System system{};
+    auto& network = system.GetRoomNetwork();
+    network.Init();
+    if (std::shared_ptr<Network::Room> room = network.GetRoom().lock()) {
+        AnnounceMultiplayerRoom::GameInfo preferred_game_info{.name = preferred_game,
+                                                              .id = preferred_game_id};
+        if (!room->Create(room_name, room_description, "", port, password, max_members, username,
+                          preferred_game_info, std::move(verify_backend), ban_list,
+                          enable_yuzu_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<Core::AnnounceMultiplayerSession>(network);
+        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;
+}
diff --git a/src/dedicated_room/yuzu-room.rc b/src/dedicated_room/yuzu-room.rc
new file mode 100644
index 000000000..b616a5764
--- /dev/null
+++ b/src/dedicated_room/yuzu-room.rc
@@ -0,0 +1,17 @@
+#include "winresrc.h"
+/////////////////////////////////////////////////////////////////////////////
+//
+// Icon
+//
+
+// Icon with lowest ID value placed first to ensure application icon
+// remains consistent on all systems.
+YUZU_ICON              ICON                    "../../dist/yuzu.ico"
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// RT_MANIFEST
+//
+
+0                       RT_MANIFEST             "../../dist/yuzu.manifest"