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engine: implement support for secured client dlls

pull/2/head
Bien Pham 3 years ago committed by a1batross
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d8fd0b3dcb
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988183a96a
2 changed files with 471 additions and 0 deletions
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  1. 12
      engine/client/cl_game.c
  2. 459
      engine/client/cl_securedstub.c

12
engine/client/cl_game.c
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@ -3932,6 +3932,8 @@ void CL_UnloadProgs( void )
Cmd_Unlink( CMD_CLIENTDLL ); Cmd_Unlink( CMD_CLIENTDLL );
} }
void GetSecuredClientAPI( CL_EXPORT_FUNCS F );
qboolean CL_LoadProgs( const char *name ) qboolean CL_LoadProgs( const char *name )
{ {
static playermove_t gpMove; static playermove_t gpMove;
@ -3984,7 +3986,17 @@ qboolean CL_LoadProgs( const char *name )
// trying to fill interface now // trying to fill interface now
GetClientAPI( &clgame.dllFuncs ); GetClientAPI( &clgame.dllFuncs );
}
else if(( GetClientAPI = (void *)COM_GetProcAddress( clgame.hInstance, "F" )) != NULL )
{
Con_Reportf( "CL_LoadProgs: found single callback export (secured client dlls)\n" );
// trying to fill interface now
GetSecuredClientAPI( GetClientAPI );
}
if ( GetClientAPI != NULL )
{
// check critical functions again // check critical functions again
for( func = cdll_exports; func && func->name; func++ ) for( func = cdll_exports; func && func->name; func++ )
{ {

459
engine/client/cl_securedstub.c
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@ -0,0 +1,459 @@
/*
cl_securedstub.c - secured client dll stub
Copyright (C) 2022 FWGS
This program 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.
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.
*/
#include "common.h"
#include "client.h"
typedef struct cldll_func_src_s
{
int (*pfnInitialize)( cl_enginefunc_t *pEnginefuncs, int iVersion );
void (*pfnInit)( void );
int (*pfnVidInit)( void );
int (*pfnRedraw)( float flTime, int intermission );
int (*pfnUpdateClientData)( client_data_t *cdata, float flTime );
void (*pfnReset)( void );
void (*pfnPlayerMove)( struct playermove_s *ppmove, int server );
void (*pfnPlayerMoveInit)( struct playermove_s *ppmove );
char (*pfnPlayerMoveTexture)( char *name );
void (*IN_ActivateMouse)( void );
void (*IN_DeactivateMouse)( void );
void (*IN_MouseEvent)( int mstate );
void (*IN_ClearStates)( void );
void (*IN_Accumulate)( void );
void (*CL_CreateMove)( float frametime, struct usercmd_s *cmd, int active );
int (*CL_IsThirdPerson)( void );
void (*CL_CameraOffset)( float *ofs ); // unused
void *(*KB_Find)( const char *name );
void (*CAM_Think)( void ); // camera stuff
void (*pfnCalcRefdef)( ref_params_t *pparams );
int (*pfnAddEntity)( int type, cl_entity_t *ent, const char *modelname );
void (*pfnCreateEntities)( void );
void (*pfnDrawNormalTriangles)( void );
void (*pfnDrawTransparentTriangles)( void );
void (*pfnStudioEvent)( const struct mstudioevent_s *event, const cl_entity_t *entity );
void (*pfnPostRunCmd)( struct local_state_s *from, struct local_state_s *to, usercmd_t *cmd, int runfuncs, double time, unsigned int random_seed );
void (*pfnShutdown)( void );
void (*pfnTxferLocalOverrides)( entity_state_t *state, const clientdata_t *client );
void (*pfnProcessPlayerState)( entity_state_t *dst, const entity_state_t *src );
void (*pfnTxferPredictionData)( entity_state_t *ps, const entity_state_t *pps, clientdata_t *pcd, const clientdata_t *ppcd, weapon_data_t *wd, const weapon_data_t *pwd );
void (*pfnDemo_ReadBuffer)( int size, byte *buffer );
int (*pfnConnectionlessPacket)( const struct netadr_s *net_from, const char *args, char *buffer, int *size );
int (*pfnGetHullBounds)( int hullnumber, float *mins, float *maxs );
void (*pfnFrame)( double time );
int (*pfnKey_Event)( int eventcode, int keynum, const char *pszCurrentBinding );
void (*pfnTempEntUpdate)( double frametime, double client_time, double cl_gravity, struct tempent_s **ppTempEntFree, struct tempent_s **ppTempEntActive, int ( *Callback_AddVisibleEntity )( cl_entity_t *pEntity ), void ( *Callback_TempEntPlaySound )( struct tempent_s *pTemp, float damp ));
cl_entity_t *(*pfnGetUserEntity)( int index );
void (*pfnVoiceStatus)( int entindex, qboolean bTalking );
void (*pfnDirectorMessage)( int iSize, void *pbuf );
int (*pfnGetStudioModelInterface)( int version, struct r_studio_interface_s **ppinterface, struct engine_studio_api_s *pstudio );
void (*pfnChatInputPosition)( int *x, int *y );
int (*pfnGetPlayerTeam)( int iPlayer );
void *(*pfnClientFactory)( void );
} cldll_func_src_t;
typedef struct cldll_func_dst_s
{
void (*pfnInitialize)( cl_enginefunc_t **pEnginefuncs, int *iVersion );
void (*pfnInit)( void );
void (*pfnVidInit)( void );
void (*pfnRedraw)( float *flTime, int *intermission );
void (*pfnUpdateClientData)( client_data_t **cdata, float *flTime );
void (*pfnReset)( void );
void (*pfnPlayerMove)( struct playermove_s **ppmove, int *server );
void (*pfnPlayerMoveInit)( struct playermove_s **ppmove );
void (*pfnPlayerMoveTexture)( char **name );
void (*IN_ActivateMouse)( void );
void (*IN_DeactivateMouse)( void );
void (*IN_MouseEvent)( int *mstate );
void (*IN_ClearStates)( void );
void (*IN_Accumulate)( void );
void (*CL_CreateMove)( float *frametime, struct usercmd_s **cmd, int *active );
void (*CL_IsThirdPerson)( void );
void (*CL_CameraOffset)( float **ofs );
void (*KB_Find)( const char **name );
void (*CAM_Think)( void );
void (*pfnCalcRefdef)( ref_params_t **pparams );
void (*pfnAddEntity)( int *type, cl_entity_t **ent, const char **modelname );
void (*pfnCreateEntities)( void );
void (*pfnDrawNormalTriangles)( void );
void (*pfnDrawTransparentTriangles)( void );
void (*pfnStudioEvent)( const struct mstudioevent_s **event, const cl_entity_t **entity );
void (*pfnPostRunCmd)( struct local_state_s **from, struct local_state_s **to, usercmd_t **cmd, int *runfuncs, double *time, unsigned int *random_seed );
void (*pfnShutdown)( void );
void (*pfnTxferLocalOverrides)( entity_state_t **state, const clientdata_t **client );
void (*pfnProcessPlayerState)( entity_state_t **dst, const entity_state_t **src );
void (*pfnTxferPredictionData)( entity_state_t **ps, const entity_state_t **pps, clientdata_t **pcd, const clientdata_t **ppcd, weapon_data_t **wd, const weapon_data_t **pwd );
void (*pfnDemo_ReadBuffer)( int *size, byte **buffer );
void (*pfnConnectionlessPacket)( const struct netadr_s **net_from, const char **args, char **buffer, int **size );
void (*pfnGetHullBounds)( int *hullnumber, float **mins, float **maxs );
void (*pfnFrame)( double *time );
void (*pfnKey_Event)( int *eventcode, int *keynum, const char **pszCurrentBinding );
void (*pfnTempEntUpdate)( double *frametime, double *client_time, double *cl_gravity, struct tempent_s ***ppTempEntFree, struct tempent_s ***ppTempEntActive, int ( **Callback_AddVisibleEntity )( cl_entity_t *pEntity ), void ( **Callback_TempEntPlaySound )( struct tempent_s *pTemp, float damp ));
void (*pfnGetUserEntity)( int *index );
void (*pfnVoiceStatus)( int *entindex, qboolean *bTalking );
void (*pfnDirectorMessage)( int *iSize, void **pbuf );
void (*pfnGetStudioModelInterface)( int *version, struct r_studio_interface_s ***ppinterface, struct engine_studio_api_s **pstudio );
void (*pfnChatInputPosition)( int **x, int **y );
void (*pfnGetPlayerTeam)( int *iPlayer );
} cldll_func_dst_t;
typedef struct modfuncs_s
{
void (*m_pfnLoadMod)( char *pchModule );
void (*m_pfnCloseMod)( void );
int (*m_pfnNCall)( int ijump, int cnArg, ... );
void (*m_pfnGetClDstAddrs)( cldll_func_dst_t *pcldstAddrs );
void (*m_pfnGetEngDstAddrs)( struct cl_enginefunc_dst_s *pengdstAddrs );
void (*m_pfnModuleLoaded)( void );
void (*m_pfnProcessOutgoingNet)( struct netchan_s *pchan, struct sizebuf_s *psizebuf );
qboolean (*m_pfnProcessIncomingNet)( struct netchan_s *pchan, struct sizebuf_s *psizebuf );
void (*m_pfnTextureLoad)( char *pszName, int dxWidth, int dyHeight, char *pbData );
void (*m_pfnModelLoad)( struct model_s *pmodel, void *pvBuf );
void (*m_pfnFrameBegin)( void );
void (*m_pfnFrameRender1)( void );
void (*m_pfnFrameRender2)( void );
void (*m_pfnSetModSHelpers)( struct modshelpers_s *pmodshelpers );
void (*m_pfnSetModCHelpers)( struct modchelpers_s *pmodchelpers );
void (*m_pfnSetEngData)( struct engdata_s *pengdata );
int m_nVersion;
void (*m_pfnConnectClient)( int iPlayer );
void (*m_pfnRecordIP)( unsigned int pnIP );
void (*m_pfnPlayerStatus)( unsigned char *pbData, int cbData );
void (*m_pfnSetEngineVersion)( int nVersion );
int m_nVoid2;
int m_nVoid3;
int m_nVoid4;
int m_nVoid5;
int m_nVoid6;
int m_nVoid7;
int m_nVoid8;
int m_nVoid9;
} modfuncs_t;
static void DstInitialize( cl_enginefunc_t **pEnginefuncs, int *iVersion )
{
// stub
}
static void DstInit( void )
{
// stub
}
static void DstVidInit( void )
{
// stub
}
static void DstRedraw( float *flTime, int *intermission )
{
// stub
}
static void DstUpdateClientData( client_data_t **cdata, float *flTime )
{
// stub
}
static void DstReset( void )
{
// stub
}
static void DstPlayerMove( struct playermove_s **ppmove, int *server )
{
// stub
}
static void DstPlayerMoveInit( struct playermove_s **ppmove )
{
// stub
}
static void DstPlayerMoveTexture( char **name )
{
// stub
}
static void DstIN_ActivateMouse( void )
{
// stub
}
static void DstIN_DeactivateMouse( void )
{
// stub
}
static void DstIN_MouseEvent( int *mstate )
{
// stub
}
static void DstIN_ClearStates( void )
{
// stub
}
static void DstIN_Accumulate( void )
{
// stub
}
static void DstCL_CreateMove( float *frametime, struct usercmd_s **cmd, int *active )
{
// stub
}
static void DstCL_IsThirdPerson( void )
{
// stub
}
static void DstCL_CameraOffset( float **ofs )
{
// stub
}
static void DstKB_Find( const char **name )
{
// stub
}
static void DstCAM_Think( void )
{
// stub
}
static void DstCalcRefdef( ref_params_t **pparams )
{
// stub
}
static void DstAddEntity( int *type, cl_entity_t **ent, const char **modelname )
{
// stub
}
static void DstCreateEntities( void )
{
// stub
}
static void DstDrawNormalTriangles( void )
{
// stub
}
static void DstDrawTransparentTriangles( void )
{
// stub
}
static void DstStudioEvent( const struct mstudioevent_s **event, const cl_entity_t **entity )
{
// stub
}
static void DstPostRunCmd( struct local_state_s **from, struct local_state_s **to, usercmd_t **cmd, int *runfuncs, double *time, unsigned int *random_seed )
{
// stub
}
static void DstShutdown( void )
{
// stub
}
static void DstTxferLocalOverrides( entity_state_t **state, const clientdata_t **client )
{
// stub
}
static void DstProcessPlayerState( entity_state_t **dst, const entity_state_t **src )
{
// stub
}
static void DstTxferPredictionData( entity_state_t **ps, const entity_state_t **pps, clientdata_t **pcd, const clientdata_t **ppcd, weapon_data_t **wd, const weapon_data_t **pwd )
{
// stub
}
static void DstDemo_ReadBuffer( int *size, byte **buffer )
{
// stub
}
static void DstConnectionlessPacket( const struct netadr_s **net_from, const char **args, char **buffer, int **size )
{
// stub
}
static void DstGetHullBounds( int *hullnumber, float **mins, float **maxs )
{
// stub
}
static void DstFrame( double *time )
{
// stub
}
static void DstKey_Event( int *eventcode, int *keynum, const char **pszCurrentBinding )
{
// stub
}
static void DstTempEntUpdate( double *frametime, double *client_time, double *cl_gravity, struct tempent_s ***ppTempEntFree, struct tempent_s ***ppTempEntActive, int ( **Callback_AddVisibleEntity )( cl_entity_t *pEntity ), void ( **Callback_TempEntPlaySound )( struct tempent_s *pTemp, float damp ) )
{
// stub
}
static void DstGetUserEntity( int *index )
{
// stub
}
static void DstVoiceStatus( int *entindex, qboolean *bTalking )
{
// stub
}
static void DstDirectorMessage( int *iSize, void **pbuf )
{
// stub
}
static void DstGetStudioModelInterface( int *version, struct r_studio_interface_s ***ppinterface, struct engine_studio_api_s **pstudio )
{
// stub
}
static void DstChatInputPosition( int **x, int **y )
{
// stub
}
static void DstGetPlayerTeam( int *iPlayer )
{
// stub
}
static cldll_func_dst_t cldllFuncDst =
{
DstInitialize,
DstInit,
DstVidInit,
DstRedraw,
DstUpdateClientData,
DstReset,
DstPlayerMove,
DstPlayerMoveInit,
DstPlayerMoveTexture,
DstIN_ActivateMouse,
DstIN_DeactivateMouse,
DstIN_MouseEvent,
DstIN_ClearStates,
DstIN_Accumulate,
DstCL_CreateMove,
DstCL_IsThirdPerson,
DstCL_CameraOffset,
DstKB_Find,
DstCAM_Think,
DstCalcRefdef,
DstAddEntity,
DstCreateEntities,
DstDrawNormalTriangles,
DstDrawTransparentTriangles,
DstStudioEvent,
DstPostRunCmd,
DstShutdown,
DstTxferLocalOverrides,
DstProcessPlayerState,
DstTxferPredictionData,
DstDemo_ReadBuffer,
DstConnectionlessPacket,
DstGetHullBounds,
DstFrame,
DstKey_Event,
DstTempEntUpdate,
DstGetUserEntity,
DstVoiceStatus,
DstDirectorMessage,
DstGetStudioModelInterface,
DstChatInputPosition,
DstGetPlayerTeam,
};
void GetSecuredClientAPI( CL_EXPORT_FUNCS F )
{
cldll_func_src_t cldllFuncSrc;
modfuncs_t modFuncs;
const dllfunc_t *func;
memset( &cldllFuncSrc, 0, sizeof( cldllFuncSrc ) );
memset( &modFuncs, 0, sizeof( modFuncs ) );
// secured client dlls need these
*(cldll_func_dst_t **)&cldllFuncSrc.pfnVidInit = &cldllFuncDst;
*(modfuncs_t **)&cldllFuncSrc.pfnInitialize = &modFuncs;
// trying to fill interface now
F( &cldllFuncSrc );
// map exports to xash's cldll_func_t
clgame.dllFuncs.pfnInitialize = cldllFuncSrc.pfnInitialize;
clgame.dllFuncs.pfnInit = cldllFuncSrc.pfnInit;
clgame.dllFuncs.pfnVidInit = cldllFuncSrc.pfnVidInit;
clgame.dllFuncs.pfnRedraw = cldllFuncSrc.pfnRedraw;
clgame.dllFuncs.pfnUpdateClientData = cldllFuncSrc.pfnUpdateClientData;
clgame.dllFuncs.pfnReset = cldllFuncSrc.pfnReset;
clgame.dllFuncs.pfnPlayerMove = cldllFuncSrc.pfnPlayerMove;
clgame.dllFuncs.pfnPlayerMoveInit = cldllFuncSrc.pfnPlayerMoveInit;
clgame.dllFuncs.pfnPlayerMoveTexture = cldllFuncSrc.pfnPlayerMoveTexture;
clgame.dllFuncs.IN_ActivateMouse = cldllFuncSrc.IN_ActivateMouse;
clgame.dllFuncs.IN_DeactivateMouse = cldllFuncSrc.IN_DeactivateMouse;
clgame.dllFuncs.IN_MouseEvent = cldllFuncSrc.IN_MouseEvent;
clgame.dllFuncs.IN_ClearStates = cldllFuncSrc.IN_ClearStates;
clgame.dllFuncs.IN_Accumulate = cldllFuncSrc.IN_Accumulate;
clgame.dllFuncs.CL_CreateMove = cldllFuncSrc.CL_CreateMove;
clgame.dllFuncs.CL_IsThirdPerson = cldllFuncSrc.CL_IsThirdPerson;
clgame.dllFuncs.CL_CameraOffset = cldllFuncSrc.CL_CameraOffset;
clgame.dllFuncs.KB_Find = cldllFuncSrc.KB_Find;
clgame.dllFuncs.CAM_Think = cldllFuncSrc.CAM_Think;
clgame.dllFuncs.pfnCalcRefdef = cldllFuncSrc.pfnCalcRefdef;
clgame.dllFuncs.pfnAddEntity = cldllFuncSrc.pfnAddEntity;
clgame.dllFuncs.pfnCreateEntities = cldllFuncSrc.pfnCreateEntities;
clgame.dllFuncs.pfnDrawNormalTriangles = cldllFuncSrc.pfnDrawNormalTriangles;
clgame.dllFuncs.pfnDrawTransparentTriangles = cldllFuncSrc.pfnDrawTransparentTriangles;
clgame.dllFuncs.pfnStudioEvent = cldllFuncSrc.pfnStudioEvent;
clgame.dllFuncs.pfnPostRunCmd = cldllFuncSrc.pfnPostRunCmd;
clgame.dllFuncs.pfnShutdown = cldllFuncSrc.pfnShutdown;
clgame.dllFuncs.pfnTxferLocalOverrides = cldllFuncSrc.pfnTxferLocalOverrides;
clgame.dllFuncs.pfnProcessPlayerState = cldllFuncSrc.pfnProcessPlayerState;
clgame.dllFuncs.pfnTxferPredictionData = cldllFuncSrc.pfnTxferPredictionData;
clgame.dllFuncs.pfnDemo_ReadBuffer = cldllFuncSrc.pfnDemo_ReadBuffer;
clgame.dllFuncs.pfnConnectionlessPacket = cldllFuncSrc.pfnConnectionlessPacket;
clgame.dllFuncs.pfnGetHullBounds = cldllFuncSrc.pfnGetHullBounds;
clgame.dllFuncs.pfnFrame = cldllFuncSrc.pfnFrame;
clgame.dllFuncs.pfnKey_Event = cldllFuncSrc.pfnKey_Event;
clgame.dllFuncs.pfnTempEntUpdate = cldllFuncSrc.pfnTempEntUpdate;
clgame.dllFuncs.pfnGetUserEntity = cldllFuncSrc.pfnGetUserEntity;
clgame.dllFuncs.pfnVoiceStatus = cldllFuncSrc.pfnVoiceStatus;
clgame.dllFuncs.pfnDirectorMessage = cldllFuncSrc.pfnDirectorMessage;
clgame.dllFuncs.pfnGetStudioModelInterface = cldllFuncSrc.pfnGetStudioModelInterface;
clgame.dllFuncs.pfnChatInputPosition = cldllFuncSrc.pfnChatInputPosition;
}
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