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engine: client: implement map CRC32 checking on client side

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This commit is contained in:
Alibek Omarov 2023-07-02 01:20:20 +03:00
parent ea24b5f3ca
commit 0de0615eeb
1 changed files with 15 additions and 0 deletions
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15
engine/client/cl_parse.c
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@ -21,6 +21,7 @@ GNU General Public License for more details.
#include "shake.h" #include "shake.h"
#include "hltv.h" #include "hltv.h"
#include "input.h" #include "input.h"
#include "server.h"
#if XASH_LOW_MEMORY != 2 #if XASH_LOW_MEMORY != 2
int CL_UPDATE_BACKUP = SINGLEPLAYER_BACKUP; int CL_UPDATE_BACKUP = SINGLEPLAYER_BACKUP;
#endif #endif
@ -848,8 +849,10 @@ CL_ParseServerData
void CL_ParseServerData( sizebuf_t *msg, qboolean legacy ) void CL_ParseServerData( sizebuf_t *msg, qboolean legacy )
{ {
char gamefolder[MAX_QPATH]; char gamefolder[MAX_QPATH];
string mapfile;
qboolean background; qboolean background;
int i; int i;
uint32_t mapCRC;
HPAK_CheckSize( CUSTOM_RES_PATH ); HPAK_CheckSize( CUSTOM_RES_PATH );
@ -912,6 +915,18 @@ void CL_ParseServerData( sizebuf_t *msg, qboolean legacy )
} }
} }
Q_snprintf( mapfile, sizeof( mapfile ), "maps/%s.bsp", clgame.mapname );
if( CRC32_MapFile( &mapCRC, mapfile, cl.maxclients > 1 ))
{
// validate map checksum
if( mapCRC != cl.checksum )
{
Con_Printf( S_ERROR "Your map [%s] differs from the server's.\n", clgame.mapname );
CL_Disconnect_f(); // for local game, call EndGame
Host_AbortCurrentFrame(); // to avoid svc_bad
}
}
if( clgame.maxModels > MAX_MODELS ) if( clgame.maxModels > MAX_MODELS )
Con_Printf( S_WARN "server model limit is above client model limit %i > %i\n", clgame.maxModels, MAX_MODELS ); Con_Printf( S_WARN "server model limit is above client model limit %i > %i\n", clgame.maxModels, MAX_MODELS );