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//===========================================================================//
//
// Purpose: Implementation of the rcon client.
//
//===========================================================================//
#include "pch.h"
#include "convar.h"
#include "concommand.h"
#include "cvar.h"
#include "rcon_shared.h"
#include "sv_rcon.pb.h"
#include "cl_rcon.pb.h"
#include "cl_rcon.h"
#include "igameserverdata.h"
//-----------------------------------------------------------------------------
// Purpose: NETCON systems init
//-----------------------------------------------------------------------------
void CRConClient::Init(void)
{
m_bInitialized = true;
}
//-----------------------------------------------------------------------------
// Purpose: NETCON systems shutdown
//-----------------------------------------------------------------------------
void CRConClient::Shutdown(void)
{
if (m_bConnEstablished)
{
this->Disconnect();
}
}
//-----------------------------------------------------------------------------
// Purpose: client rcon main processing loop
//-----------------------------------------------------------------------------
void CRConClient::RunFrame(void)
{
if (m_bInitialized && m_bConnEstablished)
{
this->Recv();
}
}
//-----------------------------------------------------------------------------
// Purpose: connect to address and port stored in 'rcon_address' cvar
// Output : true if connection succeeds, false otherwise
//-----------------------------------------------------------------------------
bool CRConClient::Connect(void)
{
if (strlen(CVar_rcon_address->GetString()) > 0)
{
// Default is [127.0.0.1]:37015
m_pNetAdr2->SetIPAndPort(CVar_rcon_address->GetString());
}
if (m_pSocket->ConnectSocket(*m_pNetAdr2, true) == SOCKET_ERROR)
{
spdlog::info("Connection to RCON server '{}' failed: (SOCKET_ERROR)", m_pNetAdr2->GetIPAndPort());
return false;
}
spdlog::info("Connected to: {}", m_pNetAdr2->GetIPAndPort().c_str());
m_bConnEstablished = true;
return true;
}
//-----------------------------------------------------------------------------
// Purpose: connect to specified address and port
// Input : *svInAdr -
// *svInPort -
// Output : true if connection succeeds, false otherwise
//-----------------------------------------------------------------------------
bool CRConClient::Connect(const std::string& svInAdr, const std::string& svInPort)
{
if (svInAdr.size() > 0 && svInPort.size() > 0)
{
// Default is [127.0.0.1]:37015
m_pNetAdr2->SetIPAndPort(svInAdr, svInPort);
}
if (m_pSocket->ConnectSocket(*m_pNetAdr2, true) == SOCKET_ERROR)
{
spdlog::info("Connection to RCON server '{}' failed: (SOCKET_ERROR)", m_pNetAdr2->GetIPAndPort());
return false;
}
spdlog::info("Connected to: {}", m_pNetAdr2->GetIPAndPort().c_str());
m_bConnEstablished = true;
return true;
}
//-----------------------------------------------------------------------------
// Purpose: disconnect from current session
//-----------------------------------------------------------------------------
void CRConClient::Disconnect(void)
{
::closesocket(m_pSocket->GetAcceptedSocketHandle(0));
m_bConnEstablished = false;
}
//-----------------------------------------------------------------------------
// Purpose: send message
// Input : *svMessage -
//-----------------------------------------------------------------------------
void CRConClient::Send(const std::string& svMessage) const
{
int nSendResult = ::send(m_pSocket->GetAcceptedSocketData(0)->m_hSocket, svMessage.c_str(), svMessage.size(), MSG_NOSIGNAL);
if (nSendResult == SOCKET_ERROR)
{
spdlog::info("Failed to send RCON message: (SOCKET_ERROR)");
}
}
//-----------------------------------------------------------------------------
// Purpose: receive message
//-----------------------------------------------------------------------------
void CRConClient::Recv(void)
{
static char szRecvBuf[MAX_NETCONSOLE_INPUT_LEN] {};
{ //////////////////////////////////////////////
int nPendingLen = ::recv(m_pSocket->GetAcceptedSocketData(0)->m_hSocket, szRecvBuf, sizeof(szRecvBuf), MSG_PEEK);
if (nPendingLen == SOCKET_ERROR && m_pSocket->IsSocketBlocking())
{
return;
}
if (nPendingLen <= 0 && m_bConnEstablished) // EOF or error.
{
this->Disconnect();
spdlog::info("Server closed RCON connection");
return;
}
} //////////////////////////////////////////////
u_long nReadLen; // Find out how much we have to read.
::ioctlsocket(m_pSocket->GetAcceptedSocketData(0)->m_hSocket, FIONREAD, &nReadLen);
while (nReadLen > 0)
{
memset(szRecvBuf, '\0', sizeof(szRecvBuf));
int nRecvLen = ::recv(m_pSocket->GetAcceptedSocketData(0)->m_hSocket, szRecvBuf, MIN(sizeof(szRecvBuf), nReadLen), MSG_NOSIGNAL);
if (nRecvLen == 0 && m_bConnEstablished) // Socket was closed.
{
this->Disconnect();
spdlog::info("Server closed RCON connection");
break;
}
if (nRecvLen < 0 && !m_pSocket->IsSocketBlocking())
{
break;
}
nReadLen -= nRecvLen; // Process what we've got.
this->ProcessBuffer(szRecvBuf, nRecvLen);
}
}
//-----------------------------------------------------------------------------
// Purpose: handles input response buffer
// Input : *pszIn -
// nRecvLen -
//-----------------------------------------------------------------------------
void CRConClient::ProcessBuffer(const char* pszIn, int nRecvLen) const
{
int nCharsInRespondBuffer = 0;
char szInputRespondBuffer[MAX_NETCONSOLE_INPUT_LEN] {};
while (nRecvLen)
{
switch (*pszIn)
{
case '\r':
{
if (nCharsInRespondBuffer)
{
sv_rcon::response sv_response = this->Deserialize(szInputRespondBuffer);
this->ProcessMessage(sv_response);
}
nCharsInRespondBuffer = 0;
break;
}
default:
{
if (nCharsInRespondBuffer < MAX_NETCONSOLE_INPUT_LEN - 1)
{
szInputRespondBuffer[nCharsInRespondBuffer++] = *pszIn;
}
break;
}
}
pszIn++;
nRecvLen--;
}
}
//-----------------------------------------------------------------------------
// Purpose: processes received message
// Input : *sv_response -
//-----------------------------------------------------------------------------
void CRConClient::ProcessMessage(const sv_rcon::response& sv_response) const
{
std::string svOut = sv_response.responsebuf();
switch (sv_response.responsetype())
{
case sv_rcon::response_t::SERVERDATA_RESPONSE_AUTH:
{
svOut.erase(std::remove(svOut.begin(), svOut.end(), '\n'), svOut.end());
spdlog::info("{}", svOut.c_str());
break;
}
case sv_rcon::response_t::SERVERDATA_RESPONSE_CONSOLE_LOG:
{
// !TODO: Network the enum to differentiate script/engine logs.
svOut.erase(std::remove(svOut.begin(), svOut.end(), '\n'), svOut.end());
spdlog::info("{}", svOut.c_str());
break;
}
default:
{
break;
}
}
}
//-----------------------------------------------------------------------------
// Purpose: serializes input
// Input : *svReqBuf -
// *svReqVal -
// request_t -
// Output : serialized results as string
//-----------------------------------------------------------------------------
std::string CRConClient::Serialize(const std::string& svReqBuf, const std::string& svReqVal, cl_rcon::request_t request_t) const
{
cl_rcon::request cl_request;
cl_request.set_requestid(-1);
cl_request.set_requesttype(request_t);
switch (request_t)
{
case cl_rcon::request_t::SERVERDATA_REQUEST_SETVALUE:
case cl_rcon::request_t::SERVERDATA_REQUEST_AUTH:
{
cl_request.set_requestbuf(svReqBuf);
cl_request.set_requestval(svReqVal);
break;
}
case cl_rcon::request_t::SERVERDATA_REQUEST_EXECCOMMAND:
{
cl_request.set_requestbuf(svReqBuf);
break;
}
}
return cl_request.SerializeAsString().append("\r");
}
//-----------------------------------------------------------------------------
// Purpose: de-serializes input
// Input : *svBuf -
// Output : de-serialized object
//-----------------------------------------------------------------------------
sv_rcon::response CRConClient::Deserialize(const std::string& svBuf) const
{
sv_rcon::response sv_response;
sv_response.ParseFromArray(svBuf.c_str(), static_cast<int>(svBuf.size()));
return sv_response;
}
//-----------------------------------------------------------------------------
// Purpose: checks if client rcon is initialized
// Output : true if initialized, false otherwise
//-----------------------------------------------------------------------------
bool CRConClient::IsInitialized(void) const
{
return m_bInitialized;
}
//-----------------------------------------------------------------------------
// Purpose: checks if client rcon is connected
// Output : true if connected, false otherwise
//-----------------------------------------------------------------------------
bool CRConClient::IsConnected(void) const
{
return m_bConnEstablished;
}
///////////////////////////////////////////////////////////////////////////////
CRConClient* g_pRConClient = new CRConClient();
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