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Removed the old timecheat protection and added a system that adjusts 

time to what the server thinks is correct when too much inaccuracy
builds up.  This nearly eliminates all speed cheating, both normal and
reverse, except for a brief burst before the protection kicks in.  Might
need cleaning up/tweaking.
This commit is contained in:
Brian Koropoff 2002-09-12 04:57:40 +00:00
parent 2f98af35b8
commit 7f4cd09e9d
3 changed files with 18 additions and 48 deletions
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5
qw/include/server.h
View File

@ -555,9 +555,8 @@ void ClientReliableWrite_SZ(client_t *cl, void *data, int len);
void Cvar_Info (struct cvar_s *var);
extern struct cvar_s *sv_timekick;
extern struct cvar_s *sv_timekick_fuzz;
extern struct cvar_s *sv_timekick_interval;
extern struct cvar_s *sv_timecheck_fuzz;
extern struct cvar_s *sv_timecheck_decay;
extern struct cvar_s *sv_maxrate;
extern struct cvar_s *sv_timestamps;
extern struct cvar_s *sv_timefmt;

11
qw/source/sv_main.c
View File

@ -2041,13 +2041,10 @@ SV_InitLocal (void)
"Sets the water friction value");
sv_aim = Cvar_Get ("sv_aim", "2", CVAR_NONE, NULL,
"Sets the value for auto-aiming leniency");
sv_timekick = Cvar_Get ("sv_timekick", "3", CVAR_SERVERINFO, Cvar_Info,
"Time cheat protection");
sv_timekick_fuzz = Cvar_Get ("sv_timekick_fuzz", "30", CVAR_NONE, NULL,
"Time cheat \"fuzz factor\" in milliseconds");
sv_timekick_interval = Cvar_Get ("sv_timekick_interval", "30", CVAR_NONE,
NULL, "Time cheat check interval in "
"seconds");
sv_timecheck_fuzz = Cvar_Get ("sv_timecheck_fuzz", "250", CVAR_NONE, NULL,
"Milliseconds of tolerance before time cheat throttling kicks in.");
sv_timecheck_decay = Cvar_Get ("sv_timecheck_decay", "2", CVAR_NONE,
NULL, "Rate at which time inaccuracies are \"forgiven\".");
sv_minqfversion = Cvar_Get ("sv_minqfversion", "0", CVAR_SERVERINFO,
Cvar_Info, "Minimum QF version on client");
sv_maxrate = Cvar_Get ("sv_maxrate", "10000", CVAR_SERVERINFO, Cvar_Info,

50
qw/source/sv_user.c
View File

@ -84,9 +84,8 @@ cvar_t *sv_kickfake;
cvar_t *sv_mapcheck;
cvar_t *sv_timekick;
cvar_t *sv_timekick_fuzz;
cvar_t *sv_timekick_interval;
cvar_t *sv_timecheck_fuzz;
cvar_t *sv_timecheck_decay;
void SV_FullClientUpdateToClient (client_t *client, client_t *cl);
@ -1418,45 +1417,20 @@ SV_PreRunCmd (void)
void
SV_RunCmd (usercmd_t *ucmd, qboolean inside)
{
double tmp_time;
int oldmsec, tmp_time1, i, n;
int oldmsec, passed, i, n;
edict_t *ent;
if (!inside) { // prevent infinite loop
host_client->msecs += ucmd->msec;
if (!host_client->spectator && sv_timekick->int_val
&& ((tmp_time = realtime - host_client->last_check) >=
sv_timekick_interval->value)) {
tmp_time1 = tmp_time * (1000 + sv_timekick_fuzz->value);
if ((host_client->last_check != -1) // don't do it if new player
&& (host_client->msecs > tmp_time1)) {
host_client->msec_cheating++;
SV_BroadcastPrintf (PRINT_HIGH, "%s thinks there are %d ms "
"in %d seconds (Strike %d/%d)\n",
host_client->name, host_client->msecs,
(int) tmp_time, host_client->msec_cheating,
sv_timekick->int_val);
if (host_client->msec_cheating >= sv_timekick->int_val) {
SV_BroadcastPrintf (PRINT_HIGH, "Strike %d for %s!!\n",
host_client->msec_cheating,
host_client->name);
SV_BroadcastPrintf
(PRINT_HIGH, "Please see "
"http://www.quakeforge.net/speed_cheat.php for "
"information on QuakeForge's time cheat protection. "
"That page explains how some may be cheating "
"without knowing it.\n");
SV_DropClient (host_client);
if (!inside) {
if (host_client->last_check != -1.0) {
passed = (int)((realtime - host_client->last_check)*1000.0);
host_client->msecs += passed - ucmd->msec;
host_client->msecs -= host_client->msecs >= 0 ? sv_timecheck_decay->int_val : -sv_timecheck_decay->int_val;
if (abs(host_client->msecs) > sv_timecheck_fuzz->int_val) {
host_client->msecs = bound (-sv_timecheck_fuzz->int_val, host_client->msecs, sv_timecheck_fuzz->int_val);
ucmd->msec = passed;
}
}
host_client->msecs = 0;
host_client->last_check = realtime;
}
host_client->last_check = realtime;
}
cmd = *ucmd;