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https://github.com/OpenRCT2/OpenRCT2
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f275e5ba9b
System headers, particularly windows.h polute the namespace too much with macros and unwanted definitions. Do not use them in header files.
262 lines
8.3 KiB
C++
262 lines
8.3 KiB
C++
#pragma region Copyright (c) 2014-2017 OpenRCT2 Developers
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/*****************************************************************************
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* OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
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*
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* OpenRCT2 is the work of many authors, a full list can be found in contributors.md
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* For more information, visit https://github.com/OpenRCT2/OpenRCT2
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*
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* OpenRCT2 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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* (at your option) any later version.
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*
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* A full copy of the GNU General Public License can be found in licence.txt
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*****************************************************************************/
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#pragma endregion
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#ifndef DISABLE_NETWORK
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#include <string>
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#include "../core/Console.hpp"
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#include "../core/String.hpp"
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#include "../core/Util.hpp"
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#include "network.h"
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#include "NetworkServerAdvertiser.h"
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extern "C"
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{
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#include "../config/Config.h"
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#include "../localisation/date.h"
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#include "../management/finance.h"
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#include "../peep/peep.h"
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#include "../platform/platform.h"
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#include "../util/util.h"
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#include "../world/map.h"
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#include "../world/park.h"
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#include "http.h"
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}
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enum MASTER_SERVER_STATUS
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{
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MASTER_SERVER_STATUS_OK = 200,
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MASTER_SERVER_STATUS_INVALID_TOKEN = 401,
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MASTER_SERVER_STATUS_SERVER_NOT_FOUND = 404,
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MASTER_SERVER_STATUS_INTERNAL_ERROR = 500
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};
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constexpr sint32 MASTER_SERVER_REGISTER_TIME = 120 * 1000; // 2 minutes
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constexpr sint32 MASTER_SERVER_HEARTBEAT_TIME = 60 * 1000; // 1 minute
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class NetworkServerAdvertiser : public INetworkServerAdvertiser
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{
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private:
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uint16 _port;
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ADVERTISE_STATUS _status = ADVERTISE_STATUS_UNREGISTERED;
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uint32 _lastAdvertiseTime = 0;
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uint32 _lastHeartbeatTime = 0;
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// Our unique token for this server
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std::string _token;
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// Key received from the master server
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std::string _key;
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public:
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explicit NetworkServerAdvertiser(uint16 port)
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{
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_port = port;
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_key = GenerateAdvertiseKey();
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}
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ADVERTISE_STATUS GetStatus() override
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{
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return _status;
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}
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void Update() override
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{
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switch (_status) {
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case ADVERTISE_STATUS_UNREGISTERED:
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if (_lastAdvertiseTime == 0 || platform_get_ticks() > _lastAdvertiseTime + MASTER_SERVER_REGISTER_TIME)
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{
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SendRegistration();
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}
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break;
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case ADVERTISE_STATUS_REGISTERED:
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if (platform_get_ticks() > _lastHeartbeatTime + MASTER_SERVER_HEARTBEAT_TIME)
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{
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SendHeartbeat();
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}
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break;
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// exhaust enum values to satisfy clang
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case ADVERTISE_STATUS_DISABLED:
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break;
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}
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}
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private:
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void SendRegistration()
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{
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_lastAdvertiseTime = platform_get_ticks();
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// Send the registration request
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http_request_t request = { 0 };
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request.tag = this;
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request.url = GetMasterServerUrl();
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request.method = HTTP_METHOD_POST;
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json_t *body = json_object();
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json_object_set_new(body, "key", json_string(_key.c_str()));
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json_object_set_new(body, "port", json_integer(_port));
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request.root = body;
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request.type = HTTP_DATA_JSON;
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http_request_async(&request, [](http_response_t * response) -> void
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{
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if (response == nullptr)
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{
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Console::WriteLine("Unable to connect to master server");
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}
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else
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{
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auto advertiser = static_cast<NetworkServerAdvertiser*>(response->tag);
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advertiser->OnRegistrationResponse(response->root);
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http_request_dispose(response);
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}
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});
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json_decref(body);
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}
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void SendHeartbeat()
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{
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http_request_t request = { 0 };
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request.tag = this;
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request.url = GetMasterServerUrl();
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request.method = HTTP_METHOD_PUT;
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json_t * jsonBody = GetHeartbeatJson();
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request.root = jsonBody;
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request.type = HTTP_DATA_JSON;
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_lastHeartbeatTime = platform_get_ticks();
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http_request_async(&request, [](http_response_t *response) -> void
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{
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if (response == nullptr)
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{
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log_warning("Unable to connect to master server");
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}
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else
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{
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auto advertiser = static_cast<NetworkServerAdvertiser*>(response->tag);
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advertiser->OnHeartbeatResponse(response->root);
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http_request_dispose(response);
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}
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});
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json_decref(jsonBody);
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}
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void OnRegistrationResponse(json_t * jsonRoot)
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{
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json_t *jsonStatus = json_object_get(jsonRoot, "status");
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if (json_is_integer(jsonStatus))
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{
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sint32 status = (sint32)json_integer_value(jsonStatus);
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if (status == MASTER_SERVER_STATUS_OK)
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{
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json_t * jsonToken = json_object_get(jsonRoot, "token");
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if (json_is_string(jsonToken))
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{
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_token = std::string(json_string_value(jsonToken));
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_status = ADVERTISE_STATUS_REGISTERED;
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}
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}
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else
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{
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const char * message = "Invalid response from server";
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json_t * jsonMessage = json_object_get(jsonRoot, "message");
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if (json_is_string(jsonMessage))
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{
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message = json_string_value(jsonMessage);
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}
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Console::Error::WriteLine("Unable to advertise: %s", message);
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}
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}
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}
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void OnHeartbeatResponse(json_t * jsonRoot)
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{
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json_t *jsonStatus = json_object_get(jsonRoot, "status");
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if (json_is_integer(jsonStatus))
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{
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sint32 status = (sint32)json_integer_value(jsonStatus);
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if (status == MASTER_SERVER_STATUS_OK)
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{
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// Master server has successfully updated our server status
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}
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else if (status == MASTER_SERVER_STATUS_INVALID_TOKEN)
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{
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_status = ADVERTISE_STATUS_UNREGISTERED;
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Console::WriteLine("Master server heartbeat failed: Invalid Token");
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}
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}
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}
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json_t * GetHeartbeatJson()
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{
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uint32 numPlayers = network_get_num_players();
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json_t * root = json_object();
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json_object_set_new(root, "token", json_string(_token.c_str()));
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json_object_set_new(root, "players", json_integer(numPlayers));
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json_t * gameInfo = json_object();
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json_object_set_new(gameInfo, "mapSize", json_integer(gMapSize - 2));
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json_object_set_new(gameInfo, "day", json_integer(gDateMonthTicks));
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json_object_set_new(gameInfo, "month", json_integer(gDateMonthsElapsed));
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json_object_set_new(gameInfo, "guests", json_integer(gNumGuestsInPark));
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json_object_set_new(gameInfo, "parkValue", json_integer(gParkValue));
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if (!(gParkFlags & PARK_FLAGS_NO_MONEY))
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{
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money32 cash = DECRYPT_MONEY(gCashEncrypted);
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json_object_set_new(gameInfo, "cash", json_integer(cash));
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}
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json_object_set_new(root, "gameInfo", gameInfo);
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return root;
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}
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static std::string GenerateAdvertiseKey()
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{
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// Generate a string of 16 random hex characters (64-integer key as a hex formatted string)
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static const char hexChars[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
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char key[17];
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for (sint32 i = 0; i < 16; i++)
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{
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sint32 hexCharIndex = util_rand() % Util::CountOf(hexChars);
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key[i] = hexChars[hexCharIndex];
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}
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key[Util::CountOf(key) - 1] = 0;
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return key;
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}
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static const char * GetMasterServerUrl()
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{
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const char * result = OPENRCT2_MASTER_SERVER_URL;
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if (!String::IsNullOrEmpty(gConfigNetwork.master_server_url))
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{
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result = gConfigNetwork.master_server_url;
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}
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return result;
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}
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};
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INetworkServerAdvertiser * CreateServerAdvertiser(uint16 port)
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{
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return new NetworkServerAdvertiser(port);
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}
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#endif // DISABLE_NETWORK
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