sm-ext-sourcetvmanager/forwards.cpp

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/**
* vim: set ts=4 :
* =============================================================================
* SourceMod SourceTV Manager Extension
* Copyright (C) 2004-2016 AlliedModders LLC. All rights reserved.
* =============================================================================
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 3.0, as published by the
* Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, AlliedModders LLC gives you permission to link the
* code of this program (as well as its derivative works) to "Half-Life 2," the
* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
* by the Valve Corporation. You must obey the GNU General Public License in
* all respects for all other code used. Additionally, AlliedModders LLC grants
* this exception to all derivative works. AlliedModders LLC defines further
* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
* or <http://www.sourcemod.net/license.php>.
*
* Version: $Id$
*/
#include "extension.h"
#include "forwards.h"
CForwardManager g_pSTVForwards;
SH_DECL_HOOK2_void(IDemoRecorder, StartRecording, SH_NOATTRIB, 0, const char *, bool)
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#if SOURCE_ENGINE == SE_CSGO
SH_DECL_HOOK1_void(IDemoRecorder, StopRecording, SH_NOATTRIB, 0, CGameInfo const *)
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#else
SH_DECL_HOOK0_void(IDemoRecorder, StopRecording, SH_NOATTRIB, 0)
#endif
#if SOURCE_ENGINE == SE_CSGO
SH_DECL_MANUALHOOK13(CHLTVServer_ConnectClient, 0, 0, 0, IClient *, netadr_s &, int, int, int, const char *, const char *, const char *, int, CUtlVector<NetMsg_SplitPlayerConnect *> &, bool, CrossPlayPlatform_t, const unsigned char *, int);
SH_DECL_HOOK1_void(IClient, Disconnect, SH_NOATTRIB, 0, const char *);
#else
SH_DECL_MANUALHOOK9(CHLTVServer_ConnectClient, 0, 0, 0, IClient *, netadr_t &, int, int, int, int, const char *, const char *, const char *, int);
SH_DECL_HOOK0_void_vafmt(IClient, Disconnect, SH_NOATTRIB, 0);
#endif
void CForwardManager::Init()
{
int offset = -1;
if (!g_pGameConf->GetOffset("CHLTVServer::ConnectClient", &offset) || offset == -1)
{
smutils->LogError(myself, "Failed to get CHLTVServer::ConnectClient offset.");
}
else
{
SH_MANUALHOOK_RECONFIGURE(CHLTVServer_ConnectClient, offset, 0, 0);
m_bHasClientConnectOffset = true;
}
m_StartRecordingFwd = forwards->CreateForward("SourceTV_OnStartRecording", ET_Ignore, 2, NULL, Param_Cell, Param_String);
m_StopRecordingFwd = forwards->CreateForward("SourceTV_OnStopRecording", ET_Ignore, 3, NULL, Param_Cell, Param_String, Param_Cell);
m_SpectatorPreConnectFwd = forwards->CreateForward("SourceTV_OnSpectatorPreConnect", ET_LowEvent, 4, NULL, Param_String, Param_String, Param_String, Param_String);
m_SpectatorConnectedFwd = forwards->CreateForward("SourceTV_OnSpectatorConnected", ET_Ignore, 1, NULL, Param_Cell);
m_SpectatorDisconnectFwd = forwards->CreateForward("SourceTV_OnSpectatorDisconnect", ET_Ignore, 2, NULL, Param_Cell, Param_String);
m_SpectatorDisconnectedFwd = forwards->CreateForward("SourceTV_OnSpectatorDisconnected", ET_Ignore, 2, NULL, Param_Cell, Param_String);
}
void CForwardManager::Shutdown()
{
forwards->ReleaseForward(m_StartRecordingFwd);
forwards->ReleaseForward(m_StopRecordingFwd);
forwards->ReleaseForward(m_SpectatorPreConnectFwd);
forwards->ReleaseForward(m_SpectatorConnectedFwd);
forwards->ReleaseForward(m_SpectatorDisconnectFwd);
forwards->ReleaseForward(m_SpectatorDisconnectedFwd);
}
void CForwardManager::HookRecorder(IDemoRecorder *recorder)
{
SH_ADD_HOOK(IDemoRecorder, StartRecording, recorder, SH_MEMBER(this, &CForwardManager::OnStartRecording_Post), true);
SH_ADD_HOOK(IDemoRecorder, StopRecording, recorder, SH_MEMBER(this, &CForwardManager::OnStopRecording_Post), true);
}
void CForwardManager::UnhookRecorder(IDemoRecorder *recorder)
{
SH_REMOVE_HOOK(IDemoRecorder, StartRecording, recorder, SH_MEMBER(this, &CForwardManager::OnStartRecording_Post), true);
SH_REMOVE_HOOK(IDemoRecorder, StopRecording, recorder, SH_MEMBER(this, &CForwardManager::OnStopRecording_Post), true);
}
void CForwardManager::HookServer(IServer *server)
{
if (!m_bHasClientConnectOffset)
return;
SH_ADD_MANUALHOOK(CHLTVServer_ConnectClient, server, SH_MEMBER(this, &CForwardManager::OnSpectatorConnect), false);
// Hook all already connected clients as well for late loading
for (int i = 0; i < server->GetClientCount(); i++)
{
IClient *client = server->GetClient(i);
if (client->IsConnected())
{
HookClient(client);
// Ip and password unknown :(
// Could add more gamedata to fetch it if people really lateload the extension and expect it to work :B
g_HLTVClientManager.GetClient(i + 1)->Initialize("", "", client);
}
}
}
void CForwardManager::UnhookServer(IServer *server)
{
if (!m_bHasClientConnectOffset)
return;
SH_REMOVE_MANUALHOOK(CHLTVServer_ConnectClient, server, SH_MEMBER(this, &CForwardManager::OnSpectatorConnect), false);
// Unhook all connected clients as well.
for (int i = 0; i < server->GetClientCount(); i++)
{
IClient *client = server->GetClient(i);
if (client->IsConnected())
UnhookClient(client);
}
}
void CForwardManager::HookClient(IClient *client)
{
SH_ADD_HOOK(IClient, Disconnect, client, SH_MEMBER(this, &CForwardManager::OnSpectatorDisconnect), false);
}
void CForwardManager::UnhookClient(IClient *client)
{
SH_REMOVE_HOOK(IClient, Disconnect, client, SH_MEMBER(this, &CForwardManager::OnSpectatorDisconnect), false);
}
#if SOURCE_ENGINE == SE_CSGO
// CBaseServer::RejectConnection(ns_address const&, char const*, ...)
static void RejectConnection(IServer *server, netadr_t &address, char *pchReason)
{
static ICallWrapper *pRejectConnection = nullptr;
if (!pRejectConnection)
{
int offset = -1;
if (!g_pGameConf->GetOffset("CHLTVServer::RejectConnection", &offset) || offset == -1)
{
smutils->LogError(myself, "Failed to get CHLTVServer::RejectConnection offset.");
return;
}
PassInfo pass[4];
pass[0].flags = PASSFLAG_BYVAL;
pass[0].type = PassType_Basic;
pass[0].size = sizeof(void *);
pass[1].flags = PASSFLAG_BYVAL;
pass[1].type = PassType_Basic;
pass[1].size = sizeof(void *);
pass[2].flags = PASSFLAG_BYVAL;
pass[2].type = PassType_Basic;
pass[2].size = sizeof(char *);
pass[3].flags = PASSFLAG_BYVAL;
pass[3].type = PassType_Basic;
pass[3].size = sizeof(char *);
void **vtable = *(void ***)server;
void *func = vtable[offset];
pRejectConnection = bintools->CreateCall(func, CallConv_Cdecl, NULL, pass, 4);
}
static char fmt[] = "%s";
if (pRejectConnection)
{
unsigned char vstk[sizeof(void *) * 2 + sizeof(char *) * 2];
unsigned char *vptr = vstk;
*(void **)vptr = (void *)server;
vptr += sizeof(void *);
*(void **)vptr = (void *)&address;
vptr += sizeof(void *);
*(char **)vptr = fmt;
vptr += sizeof(char *);
*(char **)vptr = pchReason;
pRejectConnection->Execute(vstk, NULL);
}
}
static bool ExtractPlayerName(CUtlVector<NetMsg_SplitPlayerConnect *> &pSplitPlayerConnectVector, char *name, int maxlen)
{
for (int i = 0; i < pSplitPlayerConnectVector.Count(); i++)
{
NetMsg_SplitPlayerConnect *split = pSplitPlayerConnectVector[i];
if (!split->has_convars())
continue;
const CMsg_CVars cvars = split->convars();
for (int c = 0; c < cvars.cvars_size(); c++)
{
const CMsg_CVars_CVar cvar = cvars.cvars(c);
if (!cvar.has_name() || !cvar.has_value())
continue;
if (!strcmp(cvar.name().c_str(), "name"))
{
strncpy(name, cvar.value().c_str(), maxlen);
return true;
}
}
}
return false;
}
#else
static void RejectConnection(IServer *server, netadr_t &address, int iClientChallenge, char *pchReason)
{
static ICallWrapper *pRejectConnection = nullptr;
if (!pRejectConnection)
{
int offset = -1;
if (!g_pGameConf->GetOffset("CHLTVServer::RejectConnection", &offset) || offset == -1)
{
smutils->LogError(myself, "Failed to get CHLTVServer::RejectConnection offset.");
return;
}
PassInfo pass[3];
pass[0].flags = PASSFLAG_BYVAL;
pass[0].type = PassType_Basic;
pass[0].size = sizeof(netadr_t *);
pass[1].flags = PASSFLAG_BYVAL;
pass[1].type = PassType_Basic;
pass[1].size = sizeof(int);
pass[2].flags = PASSFLAG_BYVAL;
pass[2].type = PassType_Basic;
pass[2].size = sizeof(char *);
pRejectConnection = bintools->CreateVCall(offset, 0, 0, NULL, pass, 3);
}
if (pRejectConnection)
{
unsigned char vstk[sizeof(void *) + sizeof(netadr_t *) + sizeof(int) + sizeof(char *)];
unsigned char *vptr = vstk;
*(void **)vptr = (void *)server;
vptr += sizeof(void *);
*(netadr_t **)vptr = &address;
vptr += sizeof(netadr_t *);
*(int *)vptr = iClientChallenge;
vptr += sizeof(int);
*(char **)vptr = pchReason;
pRejectConnection->Execute(vstk, NULL);
}
}
#endif
// Mimic Connect extension https://forums.alliedmods.net/showthread.php?t=162489
// Thanks asherkin!
char passwordBuffer[255];
#if SOURCE_ENGINE == SE_CSGO
// CHLTVServer::ConnectClient(ns_address const&, int, int, int, char const*, char const*, char const*, int, CUtlVector<CNetMessagePB<16, CCLCMsg_SplitPlayerConnect, 0, true> *, CUtlMemory<CNetMessagePB<16, CCLCMsg_SplitPlayerConnect, 0, true> *, int>> &, bool, CrossPlayPlatform_t, unsigned char const*, int)
IClient *CForwardManager::OnSpectatorConnect(netadr_s & address, int nProtocol, int iChallenge, int nAuthProtocol, const char *pchName, const char *pchPassword, const char *pCookie, int cbCookie, CUtlVector<NetMsg_SplitPlayerConnect *> &pSplitPlayerConnectVector, bool bUnknown, CrossPlayPlatform_t platform, const unsigned char *pUnknown, int iUnknown)
#else
IClient *CForwardManager::OnSpectatorConnect(netadr_t & address, int nProtocol, int iChallenge, int iClientChallenge, int nAuthProtocol, const char *pchName, const char *pchPassword, const char *pCookie, int cbCookie)
#endif
{
if (!pCookie || cbCookie < sizeof(uint64))
RETURN_META_VALUE(MRES_IGNORED, nullptr);
#if SOURCE_ENGINE == SE_CSGO
// CS:GO doesn't send the player name in pchName, but only in the client info convars.
// Try to extract the name from the protobuf msg.
char playerName[MAX_PLAYER_NAME_LENGTH];
if (ExtractPlayerName(pSplitPlayerConnectVector, playerName, sizeof(playerName)))
pchName = playerName;
#endif
char ipString[16];
V_snprintf(ipString, sizeof(ipString), "%u.%u.%u.%u", address.ip[0], address.ip[1], address.ip[2], address.ip[3]);
V_strncpy(passwordBuffer, pchPassword, 255);
// SourceTV doesn't validate steamids?!
char rejectReason[255];
m_SpectatorPreConnectFwd->PushString(pchName);
m_SpectatorPreConnectFwd->PushStringEx(passwordBuffer, 255, SM_PARAM_STRING_UTF8 | SM_PARAM_STRING_COPY, SM_PARAM_COPYBACK);
m_SpectatorPreConnectFwd->PushString(ipString);
m_SpectatorPreConnectFwd->PushStringEx(rejectReason, 255, SM_PARAM_STRING_UTF8 | SM_PARAM_STRING_COPY, SM_PARAM_COPYBACK);
cell_t retVal = 1;
m_SpectatorPreConnectFwd->Execute(&retVal);
IServer *server = META_IFACEPTR(IServer);
if (retVal == 0)
{
#if SOURCE_ENGINE == SE_CSGO
RejectConnection(server, address, rejectReason);
#else
RejectConnection(server, address, iClientChallenge, rejectReason);
#endif
RETURN_META_VALUE(MRES_SUPERCEDE, nullptr);
}
// Call the original function.
#if SOURCE_ENGINE == SE_CSGO
IClient *client = SH_MCALL(server, CHLTVServer_ConnectClient)(address, nProtocol, iChallenge, nAuthProtocol, pchName, passwordBuffer, pCookie, cbCookie, pSplitPlayerConnectVector, bUnknown, platform, pUnknown, iUnknown);
#else
IClient *client = SH_MCALL(server, CHLTVServer_ConnectClient)(address, nProtocol, iChallenge, iClientChallenge, nAuthProtocol, pchName, passwordBuffer, pCookie, cbCookie);
#endif
if (!client)
RETURN_META_VALUE(MRES_SUPERCEDE, nullptr);
HookClient(client);
HLTVClientWrapper *wrapper = g_HLTVClientManager.GetClient(client->GetPlayerSlot() + 1);
wrapper->Initialize(ipString, pchPassword, client);
m_SpectatorConnectedFwd->PushCell(client->GetPlayerSlot() + 1);
m_SpectatorConnectedFwd->Execute();
// Don't call the hooked function again, just return its value.
RETURN_META_VALUE(MRES_SUPERCEDE, client);
}
void CForwardManager::OnSpectatorDisconnect(const char *reason)
{
IClient *client = META_IFACEPTR(IClient);
if (!client)
RETURN_META(MRES_IGNORED);
UnhookClient(client);
char disconnectReason[255];
V_strncpy(disconnectReason, reason, 255);
int clientIndex = client->GetPlayerSlot() + 1;
m_SpectatorDisconnectFwd->PushCell(clientIndex);
m_SpectatorDisconnectFwd->PushStringEx(disconnectReason, 255, SM_PARAM_STRING_UTF8 | SM_PARAM_STRING_COPY, SM_PARAM_COPYBACK);
m_SpectatorDisconnectFwd->Execute();
#if SOURCE_ENGINE == SE_CSGO
SH_CALL(client, &IClient::Disconnect)(disconnectReason);
#else
SH_CALL(client, &IClient::Disconnect)("%s", disconnectReason);
#endif
m_SpectatorDisconnectedFwd->PushCell(clientIndex);
m_SpectatorDisconnectedFwd->PushString(disconnectReason);
m_SpectatorDisconnectedFwd->Execute();
RETURN_META(MRES_SUPERCEDE);
}
void CForwardManager::OnStartRecording_Post(const char *filename, bool bContinuously)
{
if (m_StartRecordingFwd->GetFunctionCount() == 0)
RETURN_META(MRES_IGNORED);
m_StartRecordingFwd->PushCell(0); // TODO: Get current hltvserver index
m_StartRecordingFwd->PushString(filename);
m_StartRecordingFwd->Execute();
RETURN_META(MRES_IGNORED);
}
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#if SOURCE_ENGINE == SE_CSGO
void CForwardManager::OnStopRecording_Post(CGameInfo const *info)
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#else
void CForwardManager::OnStopRecording_Post()
#endif
{
if (m_StopRecordingFwd->GetFunctionCount() == 0)
RETURN_META(MRES_IGNORED);
IDemoRecorder *recorder = META_IFACEPTR(IDemoRecorder);
if (!recorder->IsRecording())
RETURN_META(MRES_IGNORED);
char *pDemoFile = (char *)recorder->GetDemoFile();
m_StopRecordingFwd->PushCell(0); // TODO: Get current hltvserver index
m_StopRecordingFwd->PushString(pDemoFile);
m_StopRecordingFwd->PushCell(recorder->GetRecordingTick());
m_StopRecordingFwd->Execute();
RETURN_META(MRES_IGNORED);
}