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Add NetworkServerAdvertiser class

This commit is contained in:
Ted John 2016-08-29 15:08:07 +01:00
parent 6266e77fd5
commit a346d8a048
3 changed files with 296 additions and 0 deletions
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2
openrct2.vcxproj
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@ -119,6 +119,7 @@
<ClCompile Include="src\network\NetworkKey.cpp" />
<ClCompile Include="src\network\NetworkPacket.cpp" />
<ClCompile Include="src\network\NetworkPlayer.cpp" />
<ClCompile Include="src\network\NetworkServerAdvertiser.cpp" />
<ClCompile Include="src\network\NetworkUser.cpp" />
<ClCompile Include="src\network\TcpSocket.cpp" />
<ClCompile Include="src\network\twitch.cpp" />
@ -438,6 +439,7 @@
<ClInclude Include="src\network\NetworkGroup.h" />
<ClInclude Include="src\network\NetworkPacket.h" />
<ClInclude Include="src\network\NetworkPlayer.h" />
<ClInclude Include="src\network\NetworkServerAdvertiser.h" />
<ClInclude Include="src\network\NetworkTypes.h" />
<ClInclude Include="src\network\NetworkUser.h" />
<ClInclude Include="src\network\TcpSocket.h" />

258
src/network/NetworkServerAdvertiser.cpp Normal file
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@ -0,0 +1,258 @@
#pragma region Copyright (c) 2014-2016 OpenRCT2 Developers
/*****************************************************************************
* OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
*
* OpenRCT2 is the work of many authors, a full list can be found in contributors.md
* For more information, visit https://github.com/OpenRCT2/OpenRCT2
*
* OpenRCT2 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.
*
* A full copy of the GNU General Public License can be found in licence.txt
*****************************************************************************/
#pragma endregion
#ifndef DISABLE_NETWORK
#include <string>
#include "../core/Console.hpp"
#include "../core/String.hpp"
#include "../core/Util.hpp"
#include "network.h"
#include "NetworkServerAdvertiser.h"
extern "C"
{
#include "../addresses.h"
#include "../config.h"
#include "../localisation/date.h"
#include "../management/finance.h"
#include "../peep/peep.h"
#include "../world/map.h"
#include "../world/park.h"
#include "http.h"
}
enum MASTER_SERVER_STATUS
{
MASTER_SERVER_STATUS_OK = 200,
MASTER_SERVER_STATUS_INVALID_TOKEN = 401,
MASTER_SERVER_STATUS_SERVER_NOT_FOUND = 404,
MASTER_SERVER_STATUS_INTERNAL_ERROR = 500
};
constexpr int MASTER_SERVER_REGISTER_TIME = 120 * 1000; // 2 minutes
constexpr int MASTER_SERVER_HEARTBEAT_TIME = 60 * 1000; // 1 minute
class NetworkServerAdvertiser : public INetworkServerAdvertiser
{
private:
uint16 _port;
ADVERTISE_STATUS _status = ADVERTISE_STATUS_UNREGISTERED;
uint32 _lastAdvertiseTime = 0;
uint32 _lastHeartbeatTime = 0;
// Our unique token for this server
std::string _token;
// Key received from the master server
std::string _key;
public:
NetworkServerAdvertiser(uint16 port)
{
_port = port;
_key = GenerateAdvertiseKey();
}
ADVERTISE_STATUS GetStatus() override
{
return _status;
}
void Update() override
{
switch (_status) {
case ADVERTISE_STATUS_UNREGISTERED:
if (_lastAdvertiseTime == 0 || SDL_TICKS_PASSED(SDL_GetTicks(), _lastAdvertiseTime + MASTER_SERVER_REGISTER_TIME))
{
SendRegistration();
}
break;
case ADVERTISE_STATUS_REGISTERED:
if (SDL_TICKS_PASSED(SDL_GetTicks(), _lastHeartbeatTime + MASTER_SERVER_HEARTBEAT_TIME))
{
SendHeartbeat();
}
break;
// exhaust enum values to satisfy clang
case ADVERTISE_STATUS_DISABLED:
break;
}
}
private:
void SendRegistration()
{
_lastAdvertiseTime = SDL_GetTicks();
// Send the registration request
http_json_request request;
request.tag = this;
request.url = GetMasterServerUrl();
request.method = HTTP_METHOD_POST;
json_t *body = json_object();
json_object_set_new(body, "key", json_string(_key.c_str()));
json_object_set_new(body, "port", json_integer(_port));
request.body = body;
http_request_json_async(&request, [](http_json_response * response) -> void
{
if (response == nullptr)
{
Console::WriteLine("Unable to connect to master server");
}
else
{
auto advertiser = (NetworkServerAdvertiser *)response->tag;
advertiser->OnRegistrationResponse(response->root);
http_request_json_dispose(response);
}
});
json_decref(body);
}
void SendHeartbeat()
{
http_json_request request;
request.tag = this;
request.url = GetMasterServerUrl();
request.method = HTTP_METHOD_PUT;
json_t * jsonBody = GetHeartbeatJson();
request.body = jsonBody;
_lastHeartbeatTime = SDL_GetTicks();
http_request_json_async(&request, [](http_json_response *response) -> void
{
if (response == nullptr)
{
log_warning("Unable to connect to master server");
}
else
{
auto advertiser = (NetworkServerAdvertiser *)response->tag;
advertiser->OnHeartbeatResponse(response->root);
http_request_json_dispose(response);
}
});
json_decref(jsonBody);
}
void OnRegistrationResponse(json_t * jsonRoot)
{
json_t *jsonStatus = json_object_get(jsonRoot, "status");
if (json_is_integer(jsonStatus))
{
int status = (int)json_integer_value(jsonStatus);
if (status == MASTER_SERVER_STATUS_OK)
{
json_t * jsonToken = json_object_get(jsonRoot, "token");
if (json_is_string(jsonToken))
{
_token = std::string(json_string_value(jsonToken));
_status = ADVERTISE_STATUS_REGISTERED;
}
}
else
{
const char * message = "Invalid response from server";
json_t * jsonMessage = json_object_get(jsonRoot, "message");
if (json_is_string(jsonMessage))
{
message = json_string_value(jsonMessage);
}
Console::Error::WriteLine("Unable to advertise: %s", message);
}
}
}
void OnHeartbeatResponse(json_t * jsonRoot)
{
json_t *jsonStatus = json_object_get(jsonRoot, "status");
if (json_is_integer(jsonStatus))
{
int status = (int)json_integer_value(jsonStatus);
if (status == MASTER_SERVER_STATUS_OK)
{
// Master server has successfully updated our server status
}
else if (status == MASTER_SERVER_STATUS_INVALID_TOKEN)
{
_status = ADVERTISE_STATUS_UNREGISTERED;
Console::WriteLine("Master server heartbeat failed: Invalid Token");
}
}
}
json_t * GetHeartbeatJson()
{
uint32 numPlayers = network_get_num_players();
json_t * root = json_object();
json_object_set_new(root, "token", json_string(_token.c_str()));
json_object_set_new(root, "players", json_integer(numPlayers));
json_t * gameInfo = json_object();
json_object_set_new(gameInfo, "mapSize", json_integer(gMapSize - 2));
json_object_set_new(gameInfo, "day", json_integer(gDateMonthTicks));
json_object_set_new(gameInfo, "month", json_integer(gDateMonthsElapsed));
json_object_set_new(gameInfo, "guests", json_integer(gNumGuestsInPark));
json_object_set_new(gameInfo, "parkValue", json_integer(gParkValue));
if (!(gParkFlags & PARK_FLAGS_NO_MONEY))
{
money32 cash = DECRYPT_MONEY(gCashEncrypted);
json_object_set_new(gameInfo, "cash", json_integer(cash));
}
json_object_set_new(root, "gameInfo", gameInfo);
return root;
}
static std::string GenerateAdvertiseKey()
{
// Generate a string of 16 random hex characters (64-integer key as a hex formatted string)
static const char hexChars[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
char key[17];
for (int i = 0; i < 16; i++)
{
int hexCharIndex = rand() % Util::CountOf(hexChars);
key[i] = hexChars[hexCharIndex];
}
key[Util::CountOf(key) - 1] = 0;
return key;
}
static const char * GetMasterServerUrl()
{
const char * result = OPENRCT2_MASTER_SERVER_URL;
if (!String::IsNullOrEmpty(gConfigNetwork.master_server_url))
{
result = gConfigNetwork.master_server_url;
}
return result;
}
};
INetworkServerAdvertiser * CreateServerAdvertiser(uint16 port)
{
return new NetworkServerAdvertiser(port);
}
#endif // DISABLE_NETWORK

36
src/network/NetworkServerAdvertiser.h Normal file
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@ -0,0 +1,36 @@
#pragma region Copyright (c) 2014-2016 OpenRCT2 Developers
/*****************************************************************************
* OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
*
* OpenRCT2 is the work of many authors, a full list can be found in contributors.md
* For more information, visit https://github.com/OpenRCT2/OpenRCT2
*
* OpenRCT2 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.
*
* A full copy of the GNU General Public License can be found in licence.txt
*****************************************************************************/
#pragma endregion
#pragma once
#include "../common.h"
enum ADVERTISE_STATUS
{
ADVERTISE_STATUS_DISABLED,
ADVERTISE_STATUS_UNREGISTERED,
ADVERTISE_STATUS_REGISTERED,
};
interface INetworkServerAdvertiser
{
virtual ~INetworkServerAdvertiser() { }
virtual ADVERTISE_STATUS GetStatus() abstract;
virtual void Update() abstract;
};
INetworkServerAdvertiser * CreateServerAdvertiser(uint16 port);