/*
* SV_ParseClientMessage
* The current message is parsed for the given client
*/
void SV_ParseClientMessage( client_t *client, msg_t *msg )
{
int c;
char *s;
qboolean move_issued;
unsigned int cmdNum;
if( !msg )
return;
SV_UpdateActivity();
// only allow one move command
move_issued = qfalse;
while( 1 )
{
if( msg->readcount > msg->cursize )
{
Com_Printf( "SV_ParseClientMessage: badread\n" );
SV_DropClient( client, DROP_TYPE_GENERAL, "Error: Bad message" );
return;
}
c = MSG_ReadByte( msg );
if( c == -1 )
break;
switch( c )
{
default:
Com_Printf( "SV_ParseClientMessage: unknown command char\n" );
SV_DropClient( client, DROP_TYPE_GENERAL, "Error: Unknown command char" );
return;
case clc_nop:
break;
case clc_move:
{
if( move_issued )
return; // someone is trying to cheat...
move_issued = qtrue;
SV_ParseMoveCommand( client, msg );
}
break;
case clc_svcack:
{
if( client->reliable )
{
Com_Printf( "SV_ParseClientMessage: svack from reliable client\n" );
SV_DropClient( client, DROP_TYPE_GENERAL, "Error: svack from reliable client" );
return;
}
cmdNum = MSG_ReadLong( msg );
if( cmdNum < client->reliableAcknowledge || cmdNum > client->reliableSent )
{
//SV_DropClient( client, DROP_TYPE_GENERAL, "Error: bad server command acknowledged" );
return;
}
client->reliableAcknowledge = cmdNum;
}
break;
case clc_clientcommand:
if( !client->reliable )
{
cmdNum = MSG_ReadLong( msg );
if( cmdNum <= client->clientCommandExecuted )
{
s = MSG_ReadString( msg ); // read but ignore
continue;
}
client->clientCommandExecuted = cmdNum;
}
s = MSG_ReadString( msg );
SV_ExecuteUserCommand( client, s );
if( client->state == CS_ZOMBIE )
return; // disconnect command
break;
case clc_extension:
if( 1 )
{
int ext, len;
ext = MSG_ReadByte( msg ); // extension id
MSG_ReadByte( msg ); // version number
len = MSG_ReadShort( msg ); // command length
switch( ext )
{
default:
// unsupported
MSG_SkipData( msg, len );
break;
}
}
break;
}
}
}
/**
* @brief The current net_message is parsed for the given client
*/
void SV_ExecuteClientMessage (client_t * cl, int cmd, struct dbuffer *msg)
{
if (cmd == -1)
return;
switch (cmd) {
default:
Com_Printf("SV_ExecuteClientMessage: unknown command char '%d'\n", cmd);
SV_DropClient(cl, "Unknown command\n");
return;
case clc_nop:
break;
case clc_ack:
cl->lastmessage = svs.realtime;
break;
case clc_userinfo:
NET_ReadString(msg, cl->userinfo, sizeof(cl->userinfo));
Com_DPrintf(DEBUG_SERVER, "userinfo from client: %s\n", cl->userinfo);
SV_UserinfoChanged(cl);
break;
case clc_stringcmd:
{
char str[1024];
NET_ReadString(msg, str, sizeof(str));
Com_DPrintf(DEBUG_SERVER, "stringcmd from client: %s\n", str);
SV_ExecuteUserCommand(cl, str);
if (cl->state == cs_free)
return; /* disconnect command */
break;
}
case clc_action:
/* client actions are handled by the game module */
sv->messageBuffer = msg;
TH_MutexLock(svs.serverMutex);
svs.ge->ClientAction(cl->player);
TH_MutexUnlock(svs.serverMutex);
sv->messageBuffer = NULL;
break;
case clc_endround:
/* player wants to end round */
sv->messageBuffer = msg;
TH_MutexLock(svs.serverMutex);
svs.ge->ClientEndRound(cl->player);
TH_MutexUnlock(svs.serverMutex);
sv->messageBuffer = NULL;
break;
case clc_teaminfo:
/* player sends team info */
/* actors spawn accordingly */
sv->messageBuffer = msg;
TH_MutexLock(svs.serverMutex);
svs.ge->ClientTeamInfo(cl->player);
TH_MutexUnlock(svs.serverMutex);
sv->messageBuffer = NULL;
SV_SetClientState(cl, cs_spawned);
break;
case clc_initactorstates:
/* player sends team info */
/* actors spawn accordingly */
sv->messageBuffer = msg;
TH_MutexLock(svs.serverMutex);
svs.ge->ClientInitActorStates(cl->player);
TH_MutexUnlock(svs.serverMutex);
sv->messageBuffer = NULL;
break;
}
}
/*
===================
SV_ExecuteClientMessage
The current net_message is parsed for the given client
===================
*/
void SV_ExecuteClientMessage (client_t *cl)
{
int c;
const char *s;
usercmd_t oldest, oldcmd, newcmd;
client_frame_t *frame;
vec3_t o;
// calc ping time
frame = &cl->frames[cl->netchan.incoming_acknowledged & UPDATE_MASK];
frame->ping_time = realtime - frame->senttime;
// make sure the reply sequence number matches the incoming
// sequence number
if (cl->netchan.incoming_sequence >= cl->netchan.outgoing_sequence)
cl->netchan.outgoing_sequence = cl->netchan.incoming_sequence;
else
cl->send_message = false; // don't reply, sequences have slipped
// save time for ping calculations
cl->frames[cl->netchan.outgoing_sequence & UPDATE_MASK].senttime = realtime;
cl->frames[cl->netchan.outgoing_sequence & UPDATE_MASK].ping_time = -1;
host_client = cl;
sv_player = host_client->edict;
// mark time so clients will know how much to predict
// other players
cl->localtime = sv.time;
cl->delta_sequence = -1; // no delta unless requested
while (1)
{
if (msg_badread)
{
Con_Printf ("%s: badread\n", __thisfunc__);
SV_DropClient (cl);
return;
}
c = MSG_ReadByte ();
if (c == -1)
break;
switch (c)
{
default:
Con_Printf ("%s: unknown command char\n", __thisfunc__);
SV_DropClient (cl);
return;
case clc_nop:
break;
case clc_delta:
cl->delta_sequence = MSG_ReadByte ();
break;
case clc_move:
MSG_ReadUsercmd (&oldest, false);
MSG_ReadUsercmd (&oldcmd, false);
MSG_ReadUsercmd (&newcmd, true);
if ( cl->state != cs_spawned )
break;
SV_PreRunCmd();
if (net_drop < 20)
{
while (net_drop > 2)
{
SV_RunCmd (&cl->lastcmd);
net_drop--;
}
if (net_drop > 1)
SV_RunCmd (&oldest);
if (net_drop > 0)
SV_RunCmd (&oldcmd);
}
SV_RunCmd (&newcmd);
SV_PostRunCmd();
cl->lastcmd = newcmd;
cl->lastcmd.buttons = 0; // avoid multiple fires on lag
break;
case clc_stringcmd:
s = MSG_ReadString ();
SV_ExecuteUserCommand (s);
break;
case clc_tmove:
o[0] = MSG_ReadCoord();
o[1] = MSG_ReadCoord();
o[2] = MSG_ReadCoord();
// only allowed by spectators
if (host_client->spectator)
{
VectorCopy(o, sv_player->v.origin);
SV_LinkEdict(sv_player, false);
}
break;
case clc_inv_select:
cl->edict->v.inventory = MSG_ReadByte();
break;
case clc_get_effect:
c = MSG_ReadByte();
if (sv.Effects[c].type)
{
Con_Printf("Getting effect %d\n",(int)c);
SV_SendEffect(&host_client->netchan.message, c);
}
break;
}
}
}
/*
===================
SV_ExecuteClientMessage
The current net_message is parsed for the given client
===================
*/
void SV_ExecuteClientMessage(client_t *cl){
int c;
char *s;
usercmd_t nullcmd;
usercmd_t oldest, oldcmd, newcmd;
int net_drop;
int stringCmdCount;
int checksum, calculatedChecksum;
int checksumIndex;
qboolean move_issued;
int lastframe;
sv_client = cl;
sv_player = sv_client->edict;
// only allow one move command
move_issued = false;
stringCmdCount = 0;
while(1){
if(net_message.readcount > net_message.cursize){
Com_Printf("SV_ReadClientMessage: badread\n");
SV_DropClient(cl);
return;
}
c = MSG_ReadByte(&net_message);
if(c == -1)
break;
switch(c){
default:
Com_Printf("SV_ReadClientMessage: unknown command char\n");
SV_DropClient(cl);
return;
case clc_nop:
break;
case clc_userinfo:
strncpy(cl->userinfo, MSG_ReadString(&net_message), sizeof(cl->userinfo) - 1);
SV_UserinfoChanged(cl);
break;
case clc_move:
if(move_issued)
return; // someone is trying to cheat...
move_issued = true;
checksumIndex = net_message.readcount;
checksum = MSG_ReadByte(&net_message);
lastframe = MSG_ReadLong(&net_message);
if(lastframe != cl->lastframe){
cl->lastframe = lastframe;
if(cl->lastframe > 0){
cl->frame_latency[cl->lastframe&(LATENCY_COUNTS - 1)] =
svs.realtime - cl->frames[cl->lastframe & UPDATE_MASK].senttime;
}
}
memset(&nullcmd, 0, sizeof(nullcmd));
MSG_ReadDeltaUsercmd(&net_message, &nullcmd, &oldest);
MSG_ReadDeltaUsercmd(&net_message, &oldest, &oldcmd);
MSG_ReadDeltaUsercmd(&net_message, &oldcmd, &newcmd);
if(cl->state != cs_spawned){
cl->lastframe = -1;
break;
}
// if the checksum fails, ignore the rest of the packet
calculatedChecksum = COM_BlockSequenceCRCByte(
net_message.data + checksumIndex + 1,
net_message.readcount - checksumIndex - 1,
cl->netchan.incoming_sequence);
if(calculatedChecksum != checksum){
Com_DPrintf("Failed command checksum for %s(%d != %d)/%d\n",
cl->name, calculatedChecksum, checksum,
cl->netchan.incoming_sequence);
return;
}
if(!paused->value){
net_drop = cl->netchan.dropped;
if(net_drop < 20){
// if(net_drop > 2)
// Com_Printf("drop %i\n", net_drop);
while(net_drop > 2){
SV_ClientThink(cl, &cl->lastcmd);
net_drop--;
}
if(net_drop > 1)
SV_ClientThink(cl, &oldest);
if(net_drop > 0)
SV_ClientThink(cl, &oldcmd);
}
SV_ClientThink(cl, &newcmd);
}
cl->lastcmd = newcmd;
break;
case clc_stringcmd:
s = MSG_ReadString(&net_message);
// malicious users may try using too many string commands
if(++stringCmdCount < MAX_STRINGCMDS)
SV_ExecuteUserCommand(s);
if(cl->state == cs_zombie)
return; // disconnect command
break;
}
}
}
void SV_ExecuteClientMessage (client_t *cl)
{
int c;
char *s;
usercmd_t oldest, oldcmd, newcmd;
client_frame_t *frame;
vec3_t o;
qboolean move_issued = false; //only allow one move command
int checksumIndex;
byte checksum, calculatedChecksum;
int seq_hash;
// calc ping time
frame = &cl->frames[cl->netchan.incoming_acknowledged & UPDATE_MASK];
frame->ping_time = realtime - frame->senttime;
// make sure the reply sequence number matches the incoming
// sequence number
if (cl->netchan.incoming_sequence >= cl->netchan.outgoing_sequence)
cl->netchan.outgoing_sequence = cl->netchan.incoming_sequence;
else
cl->send_message = false; // don't reply, sequences have slipped
// save time for ping calculations
cl->frames[cl->netchan.outgoing_sequence & UPDATE_MASK].senttime = realtime;
cl->frames[cl->netchan.outgoing_sequence & UPDATE_MASK].ping_time = -1;
host_client = cl;
sv_player = host_client->edict;
// seq_hash = (cl->netchan.incoming_sequence & 0xffff) ; // ^ QW_CHECK_HASH;
seq_hash = cl->netchan.incoming_sequence;
// mark time so clients will know how much to predict
// other players
cl->localtime = sv.time;
cl->delta_sequence = -1; // no delta unless requested
while (1)
{
if (msg_badread)
{
Con_Printf ("SV_ReadClientMessage: badread\n");
SV_DropClient (cl);
return;
}
c = MSG_ReadByte ();
if (c == -1)
break;
switch (c)
{
default:
Con_Printf ("SV_ReadClientMessage: unknown command char\n");
SV_DropClient (cl);
return;
case clc_nop:
break;
case clc_delta:
cl->delta_sequence = MSG_ReadByte ();
break;
case clc_move:
if (move_issued)
return; // someone is trying to cheat...
move_issued = true;
checksumIndex = MSG_GetReadCount();
checksum = (byte)MSG_ReadByte ();
// read loss percentage
cl->lossage = MSG_ReadByte();
MSG_ReadDeltaUsercmd (&nullcmd, &oldest);
MSG_ReadDeltaUsercmd (&oldest, &oldcmd);
MSG_ReadDeltaUsercmd (&oldcmd, &newcmd);
if ( cl->state != cs_spawned )
break;
// if the checksum fails, ignore the rest of the packet
calculatedChecksum = COM_BlockSequenceCRCByte(
net_message.data + checksumIndex + 1,
MSG_GetReadCount() - checksumIndex - 1,
seq_hash);
if (calculatedChecksum != checksum)
{
Con_DPrintf ("Failed command checksum for %s(%d) (%d != %d)\n",
cl->name, cl->netchan.incoming_sequence, checksum, calculatedChecksum);
return;
}
if (!sv.paused) {
SV_PreRunCmd();
if (net_drop < 20)
{
while (net_drop > 2)
{
SV_RunCmd (&cl->lastcmd);
net_drop--;
}
if (net_drop > 1)
SV_RunCmd (&oldest);
if (net_drop > 0)
SV_RunCmd (&oldcmd);
}
SV_RunCmd (&newcmd);
SV_PostRunCmd();
}
cl->lastcmd = newcmd;
cl->lastcmd.buttons = 0; // avoid multiple fires on lag
break;
case clc_stringcmd:
s = MSG_ReadString ();
SV_ExecuteUserCommand (s);
break;
case clc_tmove:
o[0] = MSG_ReadCoord();
o[1] = MSG_ReadCoord();
o[2] = MSG_ReadCoord();
// only allowed by spectators
if (host_client->spectator) {
VectorCopy(o, sv_player->v.origin);
SV_LinkEdict(sv_player, false);
}
break;
case clc_upload:
SV_NextUpload();
break;
}
}
}