ref: 88418ce4fd49ee62171f01ba90d591e3e6858fc8
dir: /qw/sv_main.c/
#include <u.h>
#include <libc.h>
#include <stdio.h>
#include "quakedef.h"
quakeparms_t host_parms;
qboolean host_initialized; // true if into command execution (compatability)
double host_frametime;
double realtime; // without any filtering or bounding
int host_hunklevel;
netadr_t master_adr[MAX_MASTERS]; // address of group servers
client_t *host_client; // current client
cvar_t sv_mintic = {"sv_mintic","0.03"}; // bound the size of the
cvar_t sv_maxtic = {"sv_maxtic","0.1"}; // physics time tic
cvar_t developer = {"developer","0"}; // show extra messages
cvar_t timeout = {"timeout","65"}; // seconds without any message
cvar_t zombietime = {"zombietime", "2"}; // seconds to sink messages
// after disconnect
cvar_t rcon_password = {"rcon_password", ""}; // password for remote server commands
cvar_t password = {"password", ""}; // password for entering the game
cvar_t spectator_password = {"spectator_password", ""}; // password for entering as a sepctator
cvar_t allow_download = {"allow_download", "1"};
cvar_t allow_download_skins = {"allow_download_skins", "1"};
cvar_t allow_download_models = {"allow_download_models", "1"};
cvar_t allow_download_sounds = {"allow_download_sounds", "1"};
cvar_t allow_download_maps = {"allow_download_maps", "1"};
cvar_t sv_phs = {"sv_phs", "1"};
cvar_t pausable = {"pausable", "1"};
//
// game rules mirrored in svs.info
//
cvar_t fraglimit = {"fraglimit","0",false,true};
cvar_t timelimit = {"timelimit","0",false,true};
cvar_t teamplay = {"teamplay","0",false,true};
cvar_t samelevel = {"samelevel","0", false, true};
cvar_t maxclients = {"maxclients","8", false, true};
cvar_t maxspectators = {"maxspectators","8", false, true};
cvar_t deathmatch = {"deathmatch","1", false, true}; // 0, 1, or 2
cvar_t spawn = {"spawn","0", false, true};
cvar_t watervis = {"watervis", "0", false, true};
cvar_t hostname = {"hostname","unnamed", false, true};
FILE *sv_logfile;
FILE *sv_fraglogfile;
void SV_AcceptClient (netadr_t adr, int userid, char *userinfo);
void Master_Shutdown (void);
//============================================================================
qboolean ServerPaused(void)
{
return sv.paused;
}
/*
================
SV_Shutdown
Quake calls this before calling Sys_Quit or Sys_Error
================
*/
void SV_Shutdown (void)
{
Master_Shutdown ();
if (sv_logfile)
{
fclose (sv_logfile);
sv_logfile = NULL;
}
if (sv_fraglogfile)
{
fclose (sv_fraglogfile);
sv_logfile = NULL;
}
NET_Shutdown ();
}
/*
================
SV_Error
Sends a datagram to all the clients informing them of the server crash,
then exits
================
*/
void SV_Error (char *error, ...)
{
va_list argptr;
static char string[1024];
static qboolean inerror = false;
if (inerror)
Sys_Error ("SV_Error: recursively entered (%s)", string);
inerror = true;
va_start (argptr,error);
vsprintf (string,error,argptr);
va_end (argptr);
Con_Printf ("SV_Error: %s\n",string);
SV_FinalMessage (va("server crashed: %s\n", string));
SV_Shutdown ();
Sys_Error ("SV_Error: %s\n",string);
}
/*
==================
SV_FinalMessage
Used by SV_Error and SV_Quit_f to send a final message to all connected
clients before the server goes down. The messages are sent immediately,
not just stuck on the outgoing message list, because the server is going
to totally exit after returning from this function.
==================
*/
void SV_FinalMessage (char *message)
{
int i;
client_t *cl;
SZ_Clear (&net_message);
MSG_WriteByte (&net_message, svc_print);
MSG_WriteByte (&net_message, PRINT_HIGH);
MSG_WriteString (&net_message, message);
MSG_WriteByte (&net_message, svc_disconnect);
for (i=0, cl = svs.clients ; i<MAX_CLIENTS ; i++, cl++)
if (cl->state >= cs_spawned)
Netchan_Transmit (&cl->netchan, net_message.cursize
, net_message.data);
}
/*
=====================
SV_DropClient
Called when the player is totally leaving the server, either willingly
or unwillingly. This is NOT called if the entire server is quiting
or crashing.
=====================
*/
void SV_DropClient (client_t *drop)
{
// add the disconnect
MSG_WriteByte (&drop->netchan.message, svc_disconnect);
if (drop->state == cs_spawned)
if (!drop->spectator)
{
// call the prog function for removing a client
// this will set the body to a dead frame, among other things
pr_global_struct->self = EDICT_TO_PROG(drop->edict);
PR_ExecuteProgram (pr_global_struct->ClientDisconnect);
}
else if (SpectatorDisconnect)
{
// call the prog function for removing a client
// this will set the body to a dead frame, among other things
pr_global_struct->self = EDICT_TO_PROG(drop->edict);
PR_ExecuteProgram (SpectatorDisconnect);
}
if (drop->spectator)
Con_Printf ("Spectator %s removed\n",drop->name);
else
Con_Printf ("Client %s removed\n",drop->name);
if (drop->download)
{
fclose (drop->download);
drop->download = NULL;
}
if (drop->upload)
{
fclose (drop->upload);
drop->upload = NULL;
}
*drop->uploadfn = 0;
drop->state = cs_zombie; // become free in a few seconds
drop->connection_started = realtime; // for zombie timeout
drop->old_frags = 0;
drop->edict->v.frags = 0;
drop->name[0] = 0;
memset (drop->userinfo, 0, sizeof(drop->userinfo));
// send notification to all remaining clients
SV_FullClientUpdate (drop, &sv.reliable_datagram);
}
//====================================================================
/*
===================
SV_CalcPing
===================
*/
int SV_CalcPing (client_t *cl)
{
float ping;
int i;
int count;
register client_frame_t *frame;
ping = 0;
count = 0;
for (frame = cl->frames, i=0 ; i<UPDATE_BACKUP ; i++, frame++)
{
if (frame->ping_time > 0)
{
ping += frame->ping_time;
count++;
}
}
if (!count)
return 9999;
ping /= count;
return ping*1000;
}
/*
===================
SV_FullClientUpdate
Writes all update values to a sizebuf
===================
*/
void SV_FullClientUpdate (client_t *client, sizebuf_t *buf)
{
int i;
char info[MAX_INFO_STRING];
i = client - svs.clients;
//Sys_Printf("SV_FullClientUpdate: Updated frags for client %d\n", i);
MSG_WriteByte (buf, svc_updatefrags);
MSG_WriteByte (buf, i);
MSG_WriteShort (buf, client->old_frags);
MSG_WriteByte (buf, svc_updateping);
MSG_WriteByte (buf, i);
MSG_WriteShort (buf, SV_CalcPing (client));
MSG_WriteByte (buf, svc_updatepl);
MSG_WriteByte (buf, i);
MSG_WriteByte (buf, client->lossage);
MSG_WriteByte (buf, svc_updateentertime);
MSG_WriteByte (buf, i);
MSG_WriteFloat (buf, realtime - client->connection_started);
strcpy (info, client->userinfo);
Info_RemovePrefixedKeys (info, '_'); // server passwords, etc
MSG_WriteByte (buf, svc_updateuserinfo);
MSG_WriteByte (buf, i);
MSG_WriteLong (buf, client->userid);
MSG_WriteString (buf, info);
}
/*
===================
SV_FullClientUpdateToClient
Writes all update values to a client's reliable stream
===================
*/
void SV_FullClientUpdateToClient (client_t *client, client_t *cl)
{
ClientReliableCheckBlock(cl, 24 + strlen(client->userinfo));
if (cl->num_backbuf) {
SV_FullClientUpdate (client, &cl->backbuf);
ClientReliable_FinishWrite(cl);
} else
SV_FullClientUpdate (client, &cl->netchan.message);
}
/*
==============================================================================
CONNECTIONLESS COMMANDS
==============================================================================
*/
/*
================
SVC_Status
Responds with all the info that qplug or qspy can see
This message can be up to around 5k with worst case string lengths.
================
*/
void SVC_Status (void)
{
int i;
client_t *cl;
int ping;
int top, bottom;
Cmd_TokenizeString ("status");
SV_BeginRedirect (RD_PACKET);
Con_Printf ("%s\n", svs.info);
for (i=0 ; i<MAX_CLIENTS ; i++)
{
cl = &svs.clients[i];
if ((cl->state == cs_connected || cl->state == cs_spawned ) && !cl->spectator)
{
top = atoi(Info_ValueForKey (cl->userinfo, "topcolor"));
bottom = atoi(Info_ValueForKey (cl->userinfo, "bottomcolor"));
top = (top < 0) ? 0 : ((top > 13) ? 13 : top);
bottom = (bottom < 0) ? 0 : ((bottom > 13) ? 13 : bottom);
ping = SV_CalcPing (cl);
Con_Printf ("%d %d %d %d \"%s\" \"%s\" %d %d\n", cl->userid,
cl->old_frags, (int)(realtime - cl->connection_started)/60,
ping, cl->name, Info_ValueForKey (cl->userinfo, "skin"), top, bottom);
}
}
SV_EndRedirect ();
}
/*
===================
SV_CheckLog
===================
*/
#define LOG_HIGHWATER 4096
#define LOG_FLUSH 10*60
void SV_CheckLog (void)
{
sizebuf_t *sz;
sz = &svs.log[svs.logsequence&1];
// bump sequence if allmost full, or ten minutes have passed and
// there is something still sitting there
if (sz->cursize > LOG_HIGHWATER
|| (realtime - svs.logtime > LOG_FLUSH && sz->cursize) )
{
// swap buffers and bump sequence
svs.logtime = realtime;
svs.logsequence++;
sz = &svs.log[svs.logsequence&1];
sz->cursize = 0;
Con_Printf ("beginning fraglog sequence %d\n", svs.logsequence);
}
}
/*
================
SVC_Log
Responds with all the logged frags for ranking programs.
If a sequence number is passed as a parameter and it is
the same as the current sequence, an A2A_NACK will be returned
instead of the data.
================
*/
void SVC_Log (void)
{
int seq;
char data[MAX_DATAGRAM+64];
if (Cmd_Argc() == 2)
seq = atoi(Cmd_Argv(1));
else
seq = -1;
if (seq == svs.logsequence-1 || !sv_fraglogfile)
{ // they allready have this data, or we aren't logging frags
data[0] = A2A_NACK;
NET_SendPacket (1, data, net_from);
return;
}
Con_DPrintf ("sending log %d to %s\n", svs.logsequence-1, net_from->sys);
sprintf (data, "stdlog %d\n", svs.logsequence-1);
strcat (data, (char *)svs.log_buf[((svs.logsequence-1)&1)]);
NET_SendPacket (strlen(data)+1, data, net_from);
}
/*
================
SVC_Ping
Just responds with an acknowledgement
================
*/
void SVC_Ping (void)
{
char data;
data = A2A_ACK;
NET_SendPacket (1, &data, net_from);
}
/*
=================
SVC_GetChallenge
Returns a challenge number that can be used
in a subsequent client_connect command.
We do this to prevent denial of service attacks that
flood the server with invalid connection IPs. With a
challenge, they must give a valid IP address.
=================
*/
void SVC_GetChallenge (void)
{
int i;
int oldest;
int oldestTime;
oldest = 0;
oldestTime = 0x7fffffff;
// see if we already have a challenge for this ip
for (i = 0 ; i < MAX_CHALLENGES ; i++)
{
if (NET_CompareBaseAdr (net_from, &svs.challenges[i].adr))
break;
if (svs.challenges[i].time < oldestTime)
{
oldestTime = svs.challenges[i].time;
oldest = i;
}
}
if (i == MAX_CHALLENGES)
{
// overwrite the oldest
svs.challenges[oldest].challenge = (rand() << 16) ^ rand();
svs.challenges[oldest].adr = *net_from;
svs.challenges[oldest].time = realtime;
i = oldest;
}
// send it back
Netchan_OutOfBandPrint (net_from, "%c%d", S2C_CHALLENGE,
svs.challenges[i].challenge);
}
/*
==================
SVC_DirectConnect
A connection request that did not come from the master
==================
*/
void SVC_DirectConnect (void)
{
char userinfo[1024];
static int userid;
netadr_t adr;
int i;
client_t *cl, *newcl;
client_t temp;
edict_t *ent;
int edictnum;
char *s;
int clients, spectators;
qboolean spectator;
int qport;
int version;
int challenge;
version = atoi(Cmd_Argv(1));
if (version != PROTOCOL_VERSION)
{
Netchan_OutOfBandPrint (net_from, "%c\nServer is version %4.2f.\n", A2C_PRINT, VERSION);
Con_Printf ("* rejected connect from version %d\n", version);
return;
}
qport = atoi(Cmd_Argv(2));
challenge = atoi(Cmd_Argv(3));
// note an extra byte is needed to replace spectator key
strncpy (userinfo, Cmd_Argv(4), sizeof(userinfo)-2);
userinfo[sizeof(userinfo) - 2] = 0;
// see if the challenge is valid
for (i=0 ; i<MAX_CHALLENGES ; i++)
{
if (NET_CompareBaseAdr (net_from, &svs.challenges[i].adr))
{
if (challenge == svs.challenges[i].challenge)
break; // good
Netchan_OutOfBandPrint (net_from, "%c\nBad challenge.\n", A2C_PRINT);
return;
}
}
if (i == MAX_CHALLENGES)
{
Netchan_OutOfBandPrint (net_from, "%c\nNo challenge for address.\n", A2C_PRINT);
return;
}
// check for password or spectator_password
s = Info_ValueForKey (userinfo, "spectator");
if (s[0] && strcmp(s, "0"))
{
if (spectator_password.string[0] &&
cistrcmp(spectator_password.string, "none") &&
strcmp(spectator_password.string, s) )
{ // failed
Con_Printf ("%s:spectator password failed\n", net_from->sys);
Netchan_OutOfBandPrint (net_from, "%c\nrequires a spectator password\n\n", A2C_PRINT);
return;
}
Info_RemoveKey (userinfo, "spectator"); // remove passwd
Info_SetValueForStarKey (userinfo, "*spectator", "1", MAX_INFO_STRING);
spectator = true;
}
else
{
s = Info_ValueForKey (userinfo, "password");
if (password.string[0] &&
cistrcmp(password.string, "none") &&
strcmp(password.string, s) )
{
Con_Printf ("%s:password failed\n", net_from->sys);
Netchan_OutOfBandPrint (net_from, "%c\nserver requires a password\n\n", A2C_PRINT);
return;
}
spectator = false;
Info_RemoveKey (userinfo, "password"); // remove passwd
}
adr = *net_from;
userid++; // so every client gets a unique id
newcl = &temp;
memset (newcl, 0, sizeof(client_t));
newcl->userid = userid;
// works properly
if (!sv_highchars.value) {
byte *p, *q;
for (p = (byte *)newcl->userinfo, q = (byte *)userinfo;
*q && p < (byte *)newcl->userinfo + sizeof(newcl->userinfo)-1; q++)
if (*q > 31 && *q <= 127)
*p++ = *q;
} else
strncpy (newcl->userinfo, userinfo, sizeof(newcl->userinfo)-1);
// if there is allready a slot for this ip, drop it
for (i=0,cl=svs.clients ; i<MAX_CLIENTS ; i++,cl++)
{
if (cl->state == cs_free)
continue;
if (NET_CompareBaseAdr (&adr, &cl->netchan.remote_address)
&& ( cl->netchan.qport == qport
|| strcmp(adr.srv, cl->netchan.remote_address.srv) == 0))
{
if (cl->state == cs_connected) {
Con_Printf("%s:dup connect\n", adr.sys);
userid--;
return;
}
Con_Printf ("%s:reconnect\n", adr.sys);
SV_DropClient (cl);
break;
}
}
// count up the clients and spectators
clients = 0;
spectators = 0;
for (i=0,cl=svs.clients ; i<MAX_CLIENTS ; i++,cl++)
{
if (cl->state == cs_free)
continue;
if (cl->spectator)
spectators++;
else
clients++;
}
// if at server limits, refuse connection
if ( maxclients.value > MAX_CLIENTS )
Cvar_SetValue ("maxclients", MAX_CLIENTS);
if (maxspectators.value > MAX_CLIENTS)
Cvar_SetValue ("maxspectators", MAX_CLIENTS);
if (maxspectators.value + maxclients.value > MAX_CLIENTS)
Cvar_SetValue ("maxspectators", MAX_CLIENTS - maxspectators.value + maxclients.value);
if ( (spectator && spectators >= (int)maxspectators.value)
|| (!spectator && clients >= (int)maxclients.value) )
{
Con_Printf ("%s:full connect\n", adr.sys);
Netchan_OutOfBandPrint (&adr, "%c\nserver is full\n\n", A2C_PRINT);
return;
}
// find a client slot
newcl = NULL;
for (i=0,cl=svs.clients ; i<MAX_CLIENTS ; i++,cl++)
{
if (cl->state == cs_free)
{
newcl = cl;
break;
}
}
if (!newcl)
{
Con_Printf ("WARNING: miscounted available clients\n");
return;
}
// build a new connection
// accept the new client
// this is the only place a client_t is ever initialized
*newcl = temp;
Netchan_OutOfBandPrint (&adr, "%c", S2C_CONNECTION );
edictnum = (newcl-svs.clients)+1;
Netchan_Setup (&newcl->netchan , &adr, qport);
newcl->state = cs_connected;
newcl->datagram.allowoverflow = true;
newcl->datagram.data = newcl->datagram_buf;
newcl->datagram.maxsize = sizeof(newcl->datagram_buf);
// spectator mode can ONLY be set at join time
newcl->spectator = spectator;
ent = EDICT_NUM(edictnum);
newcl->edict = ent;
// parse some info from the info strings
SV_ExtractFromUserinfo (newcl);
// JACK: Init the floodprot stuff.
for (i=0; i<10; i++)
newcl->whensaid[i] = 0.0;
newcl->whensaidhead = 0;
newcl->lockedtill = 0;
// call the progs to get default spawn parms for the new client
PR_ExecuteProgram (pr_global_struct->SetNewParms);
for (i=0 ; i<NUM_SPAWN_PARMS ; i++)
newcl->spawn_parms[i] = (&pr_global_struct->parm1)[i];
if (newcl->spectator)
Con_Printf ("Spectator %s connected\n", newcl->name);
else
Con_DPrintf ("Client %s connected\n", newcl->name);
newcl->sendinfo = true;
}
int Rcon_Validate (void)
{
if (!strlen (rcon_password.string))
return 0;
if (strcmp (Cmd_Argv(1), rcon_password.string) )
return 0;
return 1;
}
/*
===============
SVC_RemoteCommand
A client issued an rcon command.
Shift down the remaining args
Redirect all printfs
===============
*/
void SVC_RemoteCommand (void)
{
int i;
char remaining[1024];
if (!Rcon_Validate ()) {
Con_Printf ("Bad rcon from %s:\n%s\n"
, net_from->sys, net_message.data+4);
SV_BeginRedirect (RD_PACKET);
Con_Printf ("Bad rcon_password.\n");
} else {
Con_Printf ("Rcon from %s:\n%s\n"
, net_from->sys, net_message.data+4);
SV_BeginRedirect (RD_PACKET);
remaining[0] = 0;
for (i=2 ; i<Cmd_Argc() ; i++)
{
strcat (remaining, Cmd_Argv(i) );
strcat (remaining, " ");
}
Cmd_ExecuteString (remaining);
}
SV_EndRedirect ();
}
/*
=================
SV_ConnectionlessPacket
A connectionless packet has four leading 0xff
characters to distinguish it from a game channel.
Clients that are in the game can still send
connectionless packets.
=================
*/
void SV_ConnectionlessPacket (void)
{
char *s;
char *c;
MSG_BeginReading ();
MSG_ReadLong (); // skip the -1 marker
s = MSG_ReadStringLine ();
Cmd_TokenizeString (s);
c = Cmd_Argv(0);
if (!strcmp(c, "ping") || ( c[0] == A2A_PING && (c[1] == 0 || c[1] == '\n')) )
{
SVC_Ping ();
return;
}
if (c[0] == A2A_ACK && (c[1] == 0 || c[1] == '\n') )
{
Con_Printf ("A2A_ACK from %s\n", net_from->sys);
return;
}
else if (!strcmp(c,"status"))
{
SVC_Status ();
return;
}
else if (!strcmp(c,"log"))
{
SVC_Log ();
return;
}
else if (!strcmp(c,"connect"))
{
SVC_DirectConnect ();
return;
}
else if (!strcmp(c,"getchallenge"))
{
SVC_GetChallenge ();
return;
}
else if (!strcmp(c, "rcon"))
SVC_RemoteCommand ();
else
Con_Printf ("bad connectionless packet from %s:\n%s\n"
, net_from->sys, s);
}
/*
==============================================================================
PACKET FILTERING
You can add or remove addresses from the filter list with:
addip <ip>
removeip <ip>
The ip address is specified in dot format, and any unspecified digits will match any value, so you can specify an entire class C network with "addip 192.246.40".
Removeip will only remove an address specified exactly the same way. You cannot addip a subnet, then removeip a single host.
listip
Prints the current list of filters.
writeip
Dumps "addip <ip>" commands to listip.cfg so it can be execed at a later date. The filter lists are not saved and restored by default, because I beleive it would cause too much confusion.
filterban <0 or 1>
If 1 (the default), then ip addresses matching the current list will be prohibited from entering the game. This is the default setting.
If 0, then only addresses matching the list will be allowed. This lets you easily set up a private game, or a game that only allows players from your local network.
==============================================================================
*/
#define MAX_IPFILTERS 1024
netadr_t ipfilters[MAX_IPFILTERS];
int numipfilters;
cvar_t filterban = {"filterban", "1"};
/*
=================
SV_AddIP_f
=================
*/
void SV_AddIP_f (void)
{
int i;
i = numipfilters;
if(i == MAX_IPFILTERS){
Con_Printf("IP filter list is full\n");
return;
}
numipfilters++;
NET_StringToAdr(Cmd_Argv(1), &ipfilters[i], nil);
}
/*
=================
SV_RemoveIP_f
=================
*/
void SV_RemoveIP_f (void)
{
netadr_t a;
int i, j;
if(!NET_StringToAdr(Cmd_Argv(1), &a, nil))
return;
for (i=0 ; i<numipfilters ; i++)
if(strcmp(a.addr, ipfilters[i].addr) == 0){
for (j=i+1 ; j<numipfilters ; j++)
ipfilters[j-1] = ipfilters[j];
numipfilters--;
Con_Printf ("Removed.\n");
return;
}
Con_Printf ("Didn't find %s.\n", Cmd_Argv(1));
}
/*
=================
SV_ListIP_f
=================
*/
void SV_ListIP_f (void)
{
int i;
Con_Printf ("Filter list:\n");
for (i=0 ; i<numipfilters ; i++)
Con_Printf ("%s\n", ipfilters[i].addr);
}
/*
=================
SV_WriteIP_f
=================
*/
void SV_WriteIP_f (void)
{
FILE *f;
char name[MAX_OSPATH];
int i;
sprintf (name, "%s/listip.cfg", com_gamedir);
Con_Printf ("Writing %s.\n", name);
f = fopen (name, "wb");
if (!f)
{
Con_Printf ("Couldn't open %s\n", name);
return;
}
for (i=0 ; i<numipfilters ; i++)
fprintf (f, "addip %s\n", ipfilters[i].addr);
fclose (f);
}
/*
=================
SV_SendBan
=================
*/
void SV_SendBan (void)
{
char data[128];
data[0] = data[1] = data[2] = data[3] = 0xff;
data[4] = A2C_PRINT;
data[5] = 0;
strcat (data, "\nbanned.\n");
NET_SendPacket (strlen(data), data, net_from);
}
/*
=================
SV_FilterPacket
=================
*/
qboolean SV_FilterPacket (void)
{
int i;
for (i=0 ; i<numipfilters ; i++)
if(strcmp(net_from->addr, ipfilters[i].addr) == 0)
return filterban.value;
return !filterban.value;
}
//============================================================================
/*
=================
SV_ReadPackets
=================
*/
void SV_ReadPackets (void)
{
int i;
client_t *cl;
int qport;
while (NET_GetPacket ())
{
if (SV_FilterPacket ())
{
SV_SendBan (); // tell them we aren't listening...
continue;
}
// check for connectionless packet (0xffffffff) first
if (*(int *)net_message.data == -1)
{
SV_ConnectionlessPacket ();
continue;
}
// read the qport out of the message so we can fix up
// stupid address translating routers
MSG_BeginReading ();
MSG_ReadLong (); // sequence number
MSG_ReadLong (); // sequence number
qport = MSG_ReadShort () & 0xffff;
// check for packets from connected clients
for (i=0, cl=svs.clients ; i<MAX_CLIENTS ; i++,cl++)
{
if (cl->state == cs_free)
continue;
if (!NET_CompareBaseAdr (net_from, &cl->netchan.remote_address))
continue;
if (cl->netchan.qport != qport)
continue;
if(strcmp(cl->netchan.remote_address.srv, net_from->srv) != 0)
{
Con_DPrintf ("SV_ReadPackets: fixing up a translated port\n");
strcpy(cl->netchan.remote_address.srv, net_from->srv);
}
if (Netchan_Process(&cl->netchan))
{ // this is a valid, sequenced packet, so process it
svs.stats.packets++;
cl->send_message = true; // reply at end of frame
if (cl->state != cs_zombie)
SV_ExecuteClientMessage (cl);
}
break;
}
if (i != MAX_CLIENTS)
continue;
// packet is not from a known client
// Con_Printf ("%s:sequenced packet without connection\n"
// ,NET_AdrToString(net_from));
}
}
/*
==================
SV_CheckTimeouts
If a packet has not been received from a client in timeout.value
seconds, drop the conneciton.
When a client is normally dropped, the client_t goes into a zombie state
for a few seconds to make sure any final reliable message gets resent
if necessary
==================
*/
void SV_CheckTimeouts (void)
{
int i;
client_t *cl;
float droptime;
int nclients;
droptime = realtime - timeout.value;
nclients = 0;
for (i=0,cl=svs.clients ; i<MAX_CLIENTS ; i++,cl++)
{
if (cl->state == cs_connected || cl->state == cs_spawned) {
if (!cl->spectator)
nclients++;
if (cl->netchan.last_received < droptime) {
SV_BroadcastPrintf (PRINT_HIGH, "%s timed out\n", cl->name);
SV_DropClient (cl);
cl->state = cs_free; // don't bother with zombie state
}
}
if (cl->state == cs_zombie &&
realtime - cl->connection_started > zombietime.value)
{
cl->state = cs_free; // can now be reused
NET_Close(&cl->netchan.remote_address);
}
}
if (sv.paused && !nclients) {
// nobody left, unpause the server
SV_TogglePause("Pause released since no players are left.\n");
}
}
/*
===================
SV_GetConsoleCommands
Add them exactly as if they had been typed at the console
===================
*/
void SV_GetConsoleCommands (void)
{
char *p;
while((p = Sys_ConsoleInput()) != nil){
Cbuf_AddText(p);
free(p);
}
}
/*
===================
SV_CheckVars
===================
*/
void SV_CheckVars (void)
{
static char *pw, *spw;
int v;
if (password.string == pw && spectator_password.string == spw)
return;
pw = password.string;
spw = spectator_password.string;
v = 0;
if (pw && pw[0] && strcmp(pw, "none"))
v |= 1;
if (spw && spw[0] && strcmp(spw, "none"))
v |= 2;
Con_Printf ("Updated needpass.\n");
if (!v)
Info_SetValueForKey (svs.info, "needpass", "", MAX_SERVERINFO_STRING);
else
Info_SetValueForKey (svs.info, "needpass", va("%d",v), MAX_SERVERINFO_STRING);
}
/*
==================
SV_Frame
==================
*/
void SV_Frame (float time)
{
static double start, end;
start = Sys_DoubleTime ();
svs.stats.idle += start - end;
// keep the random time dependent
rand ();
// decide the simulation time
if (!sv.paused) {
realtime += time;
sv.time += time;
}
// check timeouts
SV_CheckTimeouts ();
// toggle the log buffer if full
SV_CheckLog ();
// move autonomous things around if enough time has passed
if (!sv.paused)
SV_Physics ();
// get packets
SV_ReadPackets ();
// check for commands typed to the host
SV_GetConsoleCommands ();
// process console commands
Cbuf_Execute ();
SV_CheckVars ();
// send messages back to the clients that had packets read this frame
SV_SendClientMessages ();
// send a heartbeat to the master if needed
Master_Heartbeat ();
// collect timing statistics
end = Sys_DoubleTime ();
svs.stats.active += end-start;
if (++svs.stats.count == STATFRAMES)
{
svs.stats.latched_active = svs.stats.active;
svs.stats.latched_idle = svs.stats.idle;
svs.stats.latched_packets = svs.stats.packets;
svs.stats.active = 0;
svs.stats.idle = 0;
svs.stats.packets = 0;
svs.stats.count = 0;
}
}
/*
===============
SV_InitLocal
===============
*/
void SV_InitLocal (void)
{
int i;
extern cvar_t sv_maxvelocity;
extern cvar_t sv_gravity;
extern cvar_t sv_aim;
extern cvar_t sv_stopspeed;
extern cvar_t sv_spectatormaxspeed;
extern cvar_t sv_accelerate;
extern cvar_t sv_airaccelerate;
extern cvar_t sv_wateraccelerate;
extern cvar_t sv_friction;
extern cvar_t sv_waterfriction;
SV_InitOperatorCommands ();
SV_UserInit ();
Cvar_RegisterVariable (&rcon_password);
Cvar_RegisterVariable (&password);
Cvar_RegisterVariable (&spectator_password);
Cvar_RegisterVariable (&sv_mintic);
Cvar_RegisterVariable (&sv_maxtic);
Cvar_RegisterVariable (&fraglimit);
Cvar_RegisterVariable (&timelimit);
Cvar_RegisterVariable (&teamplay);
Cvar_RegisterVariable (&samelevel);
Cvar_RegisterVariable (&maxclients);
Cvar_RegisterVariable (&maxspectators);
Cvar_RegisterVariable (&hostname);
Cvar_RegisterVariable (&deathmatch);
Cvar_RegisterVariable (&spawn);
Cvar_RegisterVariable (&watervis);
Cvar_RegisterVariable (&developer);
Cvar_RegisterVariable (&timeout);
Cvar_RegisterVariable (&zombietime);
Cvar_RegisterVariable (&sv_maxvelocity);
Cvar_RegisterVariable (&sv_gravity);
Cvar_RegisterVariable (&sv_stopspeed);
Cvar_RegisterVariable (&sv_maxspeed);
Cvar_RegisterVariable (&sv_spectatormaxspeed);
Cvar_RegisterVariable (&sv_accelerate);
Cvar_RegisterVariable (&sv_airaccelerate);
Cvar_RegisterVariable (&sv_wateraccelerate);
Cvar_RegisterVariable (&sv_friction);
Cvar_RegisterVariable (&sv_waterfriction);
Cvar_RegisterVariable (&sv_aim);
Cvar_RegisterVariable (&filterban);
Cvar_RegisterVariable (&allow_download);
Cvar_RegisterVariable (&allow_download_skins);
Cvar_RegisterVariable (&allow_download_models);
Cvar_RegisterVariable (&allow_download_sounds);
Cvar_RegisterVariable (&allow_download_maps);
Cvar_RegisterVariable (&sv_highchars);
Cvar_RegisterVariable (&sv_phs);
Cvar_RegisterVariable (&pausable);
Cmd_AddCommand ("addip", SV_AddIP_f);
Cmd_AddCommand ("removeip", SV_RemoveIP_f);
Cmd_AddCommand ("listip", SV_ListIP_f);
Cmd_AddCommand ("writeip", SV_WriteIP_f);
for (i=0 ; i<MAX_MODELS ; i++)
sprintf (localmodels[i], "*%d", i);
Info_SetValueForStarKey (svs.info, "*version", va("%4.2f", VERSION), MAX_SERVERINFO_STRING);
// init fraglog stuff
svs.logsequence = 1;
svs.logtime = realtime;
svs.log[0].data = svs.log_buf[0];
svs.log[0].maxsize = sizeof(svs.log_buf[0]);
svs.log[0].cursize = 0;
svs.log[0].allowoverflow = true;
svs.log[1].data = svs.log_buf[1];
svs.log[1].maxsize = sizeof(svs.log_buf[1]);
svs.log[1].cursize = 0;
svs.log[1].allowoverflow = true;
}
//============================================================================
/*
================
Master_Heartbeat
Send a message to the master every few minutes to
let it know we are alive, and log information
================
*/
#define HEARTBEAT_SECONDS 300
void Master_Heartbeat (void)
{
char string[2048];
int active;
int i;
if (realtime - svs.last_heartbeat < HEARTBEAT_SECONDS)
return; // not time to send yet
svs.last_heartbeat = realtime;
//
// count active users
//
active = 0;
for (i=0 ; i<MAX_CLIENTS ; i++)
if (svs.clients[i].state == cs_connected ||
svs.clients[i].state == cs_spawned )
active++;
svs.heartbeat_sequence++;
sprintf (string, "%c\n%d\n%d\n", S2M_HEARTBEAT,
svs.heartbeat_sequence, active);
// send to group master
for (i=0 ; i<MAX_MASTERS ; i++)
if (strlen(master_adr[i].srv) > 0)
{
Con_Printf ("Sending heartbeat to %s\n", master_adr[i].sys);
NET_SendPacket (strlen(string), string, &master_adr[i]);
}
}
/*
=================
Master_Shutdown
Informs all masters that this server is going down
=================
*/
void Master_Shutdown (void)
{
char string[2048];
int i;
sprintf (string, "%c\n", S2M_SHUTDOWN);
// send to group master
for (i=0 ; i<MAX_MASTERS ; i++)
if(strlen(master_adr[i].srv) > 0)
{
Con_Printf ("Sending heartbeat to %s\n", master_adr[i].sys);
NET_SendPacket (strlen(string), string, &master_adr[i]);
}
}
/*
=================
SV_ExtractFromUserinfo
Pull specific info from a newly changed userinfo string
into a more C freindly form.
=================
*/
void SV_ExtractFromUserinfo (client_t *cl)
{
char *val, *p, *q;
int i;
client_t *client;
int dupc = 1;
char newname[80];
// name for C code
val = Info_ValueForKey (cl->userinfo, "name");
// trim user name
strncpy(newname, val, sizeof(newname) - 1);
newname[sizeof(newname) - 1] = 0;
for (p = newname; (*p == ' ' || *p == '\r' || *p == '\n') && *p; p++)
;
if (p != newname && !*p) {
//white space only
strcpy(newname, "unnamed");
p = newname;
}
if (p != newname && *p) {
for (q = newname; *p; *q++ = *p++)
;
*q = 0;
}
for (p = newname + strlen(newname) - 1; p != newname && (*p == ' ' || *p == '\r' || *p == '\n') ; p--)
;
p[1] = 0;
if (strcmp(val, newname)) {
Info_SetValueForKey (cl->userinfo, "name", newname, MAX_INFO_STRING);
val = Info_ValueForKey (cl->userinfo, "name");
}
if (!val[0] || !cistrcmp(val, "console")) {
Info_SetValueForKey (cl->userinfo, "name", "unnamed", MAX_INFO_STRING);
val = Info_ValueForKey (cl->userinfo, "name");
}
// check to see if another user by the same name exists
while (1) {
for (i=0, client = svs.clients ; i<MAX_CLIENTS ; i++, client++) {
if (client->state != cs_spawned || client == cl)
continue;
if (!cistrcmp(client->name, val))
break;
}
if (i != MAX_CLIENTS) { // dup name
if (strlen(val) > sizeof(cl->name) - 1)
val[sizeof(cl->name) - 4] = 0;
p = val;
if (val[0] == '(')
if (val[2] == ')')
p = val + 3;
else if (val[3] == ')')
p = val + 4;
sprintf(newname, "(%d)%-.40s", dupc++, p);
Info_SetValueForKey (cl->userinfo, "name", newname, MAX_INFO_STRING);
val = Info_ValueForKey (cl->userinfo, "name");
} else
break;
}
if (strncmp(val, cl->name, strlen(cl->name))) {
if (!sv.paused) {
if (!cl->lastnametime || realtime - cl->lastnametime > 5) {
cl->lastnamecount = 0;
cl->lastnametime = realtime;
} else if (cl->lastnamecount++ > 4) {
SV_BroadcastPrintf (PRINT_HIGH, "%s was kicked for name spam\n", cl->name);
SV_ClientPrintf (cl, PRINT_HIGH, "You were kicked from the game for name spamming\n");
SV_DropClient (cl);
return;
}
}
if (cl->state >= cs_spawned && !cl->spectator)
SV_BroadcastPrintf (PRINT_HIGH, "%s changed name to %s\n", cl->name, val);
}
strncpy (cl->name, val, sizeof(cl->name)-1);
// rate command
val = Info_ValueForKey (cl->userinfo, "rate");
if (strlen(val))
{
i = atoi(val);
if (i < 500)
i = 500;
if (i > 10000)
i = 10000;
cl->netchan.rate = 1.0/i;
}
// msg command
val = Info_ValueForKey (cl->userinfo, "msg");
if (strlen(val))
{
cl->messagelevel = atoi(val);
}
}
//============================================================================
/*
====================
SV_InitNet
====================
*/
void SV_InitNet (void)
{
int port;
int p;
port = PORT_SERVER;
p = COM_CheckParm ("-port");
if (p && p < com_argc)
{
port = atoi(com_argv[p+1]);
Con_Printf ("Port: %d\n", port);
}
NET_Init (port);
Netchan_Init ();
// heartbeats will allways be sent to the id master
svs.last_heartbeat = -99999; // send immediately
}
/*
====================
SV_Init
====================
*/
void SV_Init (quakeparms_t *parms)
{
COM_InitArgv (parms->argc, parms->argv);
COM_AddParm ("-game");
COM_AddParm ("qw");
if (COM_CheckParm ("-minmemory"))
parms->memsize = MINIMUM_MEMORY;
host_parms = *parms;
if (parms->memsize < MINIMUM_MEMORY)
SV_Error ("Only %4.1f megs of memory reported, can't execute game", parms->memsize / (float)0x100000);
Memory_Init (parms->membase, parms->memsize);
Cbuf_Init ();
Cmd_Init ();
COM_Init ();
PR_Init ();
Mod_Init ();
SV_InitNet ();
SV_InitLocal ();
Sys_Init ();
Pmove_Init ();
Hunk_AllocName (0, "-HOST_HUNKLEVEL-");
host_hunklevel = Hunk_LowMark ();
Cbuf_InsertText ("exec server.cfg\n");
host_initialized = true;
Con_Printf ("Exe: 00:00:00 Dec 17 1996\n");
Con_Printf ("%4.1f megabyte heap\n",parms->memsize/ (1024*1024.0));
Con_Printf ("\nServer Version %4.2f\n\n", VERSION);
Con_Printf ("======== QuakeWorld Initialized ========\n");
// process command line arguments
Cmd_StuffCmds_f ();
Cbuf_Execute ();
// if a map wasn't specified on the command line, spawn start.map
if (sv.state == ss_dead)
Cmd_ExecuteString ("map start");
if (sv.state == ss_dead)
SV_Error ("Couldn't spawn a server");
}