ref: db47532c3fa9080a1422fcc097f565da453d6cbe
dir: /server/sv_user.c/
/*
Copyright (C) 1997-2001 Id Software, Inc.
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 2
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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// sv_user.c -- server code for moving users
#include <u.h>
#include <libc.h>
#include <stdio.h>
#include "../dat.h"
#include "../fns.h"
edict_t *sv_player;
/*
============================================================
USER STRINGCMD EXECUTION
sv_client and sv_player will be valid.
============================================================
*/
/*
==================
SV_BeginDemoServer
==================
*/
void SV_BeginDemoserver (void)
{
char name[MAX_OSPATH];
Com_sprintf (name, sizeof(name), "demos/%s", sv.name);
FS_FOpenFile (name, &sv.demofile);
if (!sv.demofile)
Com_Error (ERR_DROP, "Couldn't open %s\n", name);
}
/*
================
SV_New_f
Sends the first message from the server to a connected client.
This will be sent on the initial connection and upon each server load.
================
*/
void SV_New_f (void)
{
char *gamedir;
int playernum;
edict_t *ent;
Com_DPrintf ("New() from %s\n", sv_client->name);
if (sv_client->state != cs_connected)
{
Com_Printf ("New not valid -- already spawned\n");
return;
}
// demo servers just dump the file message
if (sv.state == ss_demo)
{
SV_BeginDemoserver ();
return;
}
//
// serverdata needs to go over for all types of servers
// to make sure the protocol is right, and to set the gamedir
//
gamedir = Cvar_VariableString ("gamedir");
// send the serverdata
MSG_WriteByte (&sv_client->netchan.message, svc_serverdata);
MSG_WriteLong (&sv_client->netchan.message, PROTOCOL_VERSION);
MSG_WriteLong (&sv_client->netchan.message, svs.spawncount);
MSG_WriteByte (&sv_client->netchan.message, sv.attractloop);
MSG_WriteString (&sv_client->netchan.message, gamedir);
if (sv.state == ss_cinematic || sv.state == ss_pic)
playernum = -1;
else
playernum = sv_client - svs.clients;
MSG_WriteShort (&sv_client->netchan.message, playernum);
// send full levelname
MSG_WriteString (&sv_client->netchan.message, sv.configstrings[CS_NAME]);
//
// game server
//
if (sv.state == ss_game)
{
// set up the entity for the client
ent = EDICT_NUM(playernum+1);
ent->s.number = playernum+1;
sv_client->edict = ent;
memset (&sv_client->lastcmd, 0, sizeof(sv_client->lastcmd));
// begin fetching configstrings
MSG_WriteByte (&sv_client->netchan.message, svc_stufftext);
MSG_WriteString (&sv_client->netchan.message, va("cmd configstrings %i 0\n",svs.spawncount) );
}
}
/*
==================
SV_Configstrings_f
==================
*/
void SV_Configstrings_f (void)
{
int start;
Com_DPrintf ("Configstrings() from %s\n", sv_client->name);
if (sv_client->state != cs_connected)
{
Com_Printf ("configstrings not valid -- already spawned\n");
return;
}
// handle the case of a level changing while a client was connecting
if ( atoi(Cmd_Argv(1)) != svs.spawncount )
{
Com_Printf ("SV_Configstrings_f from different level\n");
SV_New_f ();
return;
}
start = atoi(Cmd_Argv(2));
// write a packet full of data
while ( sv_client->netchan.message.cursize < MAX_MSGLEN/2
&& start < MAX_CONFIGSTRINGS)
{
if (sv.configstrings[start][0])
{
MSG_WriteByte (&sv_client->netchan.message, svc_configstring);
MSG_WriteShort (&sv_client->netchan.message, start);
MSG_WriteString (&sv_client->netchan.message, sv.configstrings[start]);
}
start++;
}
// send next command
if (start == MAX_CONFIGSTRINGS)
{
MSG_WriteByte (&sv_client->netchan.message, svc_stufftext);
MSG_WriteString (&sv_client->netchan.message, va("cmd baselines %i 0\n",svs.spawncount) );
}
else
{
MSG_WriteByte (&sv_client->netchan.message, svc_stufftext);
MSG_WriteString (&sv_client->netchan.message, va("cmd configstrings %i %i\n",svs.spawncount, start) );
}
}
/*
==================
SV_Baselines_f
==================
*/
void SV_Baselines_f (void)
{
int start;
entity_state_t nullstate;
entity_state_t *base;
Com_DPrintf ("Baselines() from %s\n", sv_client->name);
if (sv_client->state != cs_connected)
{
Com_Printf ("baselines not valid -- already spawned\n");
return;
}
// handle the case of a level changing while a client was connecting
if ( atoi(Cmd_Argv(1)) != svs.spawncount )
{
Com_Printf ("SV_Baselines_f from different level\n");
SV_New_f ();
return;
}
start = atoi(Cmd_Argv(2));
memset (&nullstate, 0, sizeof(nullstate));
// write a packet full of data
while ( sv_client->netchan.message.cursize < MAX_MSGLEN/2
&& start < MAX_EDICTS)
{
base = &sv.baselines[start];
if (base->modelindex || base->sound || base->effects)
{
MSG_WriteByte (&sv_client->netchan.message, svc_spawnbaseline);
MSG_WriteDeltaEntity (&nullstate, base, &sv_client->netchan.message, true, true);
}
start++;
}
// send next command
if (start == MAX_EDICTS)
{
MSG_WriteByte (&sv_client->netchan.message, svc_stufftext);
MSG_WriteString (&sv_client->netchan.message, va("precache %i\n", svs.spawncount) );
}
else
{
MSG_WriteByte (&sv_client->netchan.message, svc_stufftext);
MSG_WriteString (&sv_client->netchan.message, va("cmd baselines %i %i\n",svs.spawncount, start) );
}
}
/*
==================
SV_Begin_f
==================
*/
void SV_Begin_f (void)
{
Com_DPrintf ("Begin() from %s\n", sv_client->name);
// handle the case of a level changing while a client was connecting
if ( atoi(Cmd_Argv(1)) != svs.spawncount )
{
Com_Printf ("SV_Begin_f from different level\n");
SV_New_f ();
return;
}
sv_client->state = cs_spawned;
// call the game begin function
ge->ClientBegin (sv_player);
Cbuf_InsertFromDefer ();
}
//=============================================================================
/*
==================
SV_NextDownload_f
==================
*/
void SV_NextDownload_f (void)
{
int r;
int percent;
int size;
if (!sv_client->download)
return;
r = sv_client->downloadsize - sv_client->downloadcount;
if (r > 1024)
r = 1024;
MSG_WriteByte (&sv_client->netchan.message, svc_download);
MSG_WriteShort (&sv_client->netchan.message, r);
sv_client->downloadcount += r;
size = sv_client->downloadsize;
if (!size)
size = 1;
percent = sv_client->downloadcount*100/size;
MSG_WriteByte (&sv_client->netchan.message, percent);
SZ_Write (&sv_client->netchan.message,
sv_client->download + sv_client->downloadcount - r, r);
if (sv_client->downloadcount != sv_client->downloadsize)
return;
FS_FreeFile (sv_client->download);
sv_client->download = NULL;
}
/*
==================
SV_BeginDownload_f
==================
*/
void SV_BeginDownload_f(void)
{
char *name;
extern cvar_t *allow_download;
extern cvar_t *allow_download_players;
extern cvar_t *allow_download_models;
extern cvar_t *allow_download_sounds;
extern cvar_t *allow_download_maps;
extern int file_from_pak; // ZOID did file come from pak?
int offset = 0;
name = Cmd_Argv(1);
if (Cmd_Argc() > 2)
offset = atoi(Cmd_Argv(2)); // downloaded offset
// hacked by zoid to allow more conrol over download
// first off, no .. or global allow check
if (strstr (name, "..") || !allow_download->value
// leading dot is no good
|| *name == '.'
// leading slash bad as well, must be in subdir
|| *name == '/'
// next up, skin check
|| (strncmp(name, "players/", 6) == 0 && !allow_download_players->value)
// now models
|| (strncmp(name, "models/", 6) == 0 && !allow_download_models->value)
// now sounds
|| (strncmp(name, "sound/", 6) == 0 && !allow_download_sounds->value)
// now maps (note special case for maps, must not be in pak)
|| (strncmp(name, "maps/", 6) == 0 && !allow_download_maps->value)
// MUST be in a subdirectory
|| !strstr (name, "/") )
{ // don't allow anything with .. path
MSG_WriteByte (&sv_client->netchan.message, svc_download);
MSG_WriteShort (&sv_client->netchan.message, -1);
MSG_WriteByte (&sv_client->netchan.message, 0);
return;
}
if (sv_client->download)
FS_FreeFile (sv_client->download);
sv_client->downloadsize = FS_LoadFile (name, (void **)&sv_client->download);
sv_client->downloadcount = offset;
if (offset > sv_client->downloadsize)
sv_client->downloadcount = sv_client->downloadsize;
if (!sv_client->download
// special check for maps, if it came from a pak file, don't allow
// download ZOID
|| (strncmp(name, "maps/", 5) == 0 && file_from_pak))
{
Com_DPrintf ("Couldn't download %s to %s\n", name, sv_client->name);
if (sv_client->download) {
FS_FreeFile (sv_client->download);
sv_client->download = NULL;
}
MSG_WriteByte (&sv_client->netchan.message, svc_download);
MSG_WriteShort (&sv_client->netchan.message, -1);
MSG_WriteByte (&sv_client->netchan.message, 0);
return;
}
SV_NextDownload_f ();
Com_DPrintf ("Downloading %s to %s\n", name, sv_client->name);
}
//============================================================================
/*
=================
SV_Disconnect_f
The client is going to disconnect, so remove the connection immediately
=================
*/
void SV_Disconnect_f (void)
{
// SV_EndRedirect ();
SV_DropClient (sv_client);
}
/*
==================
SV_ShowServerinfo_f
Dumps the serverinfo info string
==================
*/
void SV_ShowServerinfo_f (void)
{
Info_Print (Cvar_Serverinfo());
}
void SV_Nextserver (void)
{
char *v;
//ZOID, ss_pic can be nextserver'd in coop mode
if (sv.state == ss_game || (sv.state == ss_pic && !Cvar_VariableValue("coop")))
return; // can't nextserver while playing a normal game
svs.spawncount++; // make sure another doesn't sneak in
v = Cvar_VariableString ("nextserver");
if (!v[0])
Cbuf_AddText ("killserver\n");
else
{
Cbuf_AddText (v);
Cbuf_AddText ("\n");
}
Cvar_Set ("nextserver","");
}
/*
==================
SV_Nextserver_f
A cinematic has completed or been aborted by a client, so move
to the next server,
==================
*/
void SV_Nextserver_f (void)
{
if ( atoi(Cmd_Argv(1)) != svs.spawncount ) {
Com_DPrintf ("Nextserver() from wrong level, from %s\n", sv_client->name);
return; // leftover from last server
}
Com_DPrintf ("Nextserver() from %s\n", sv_client->name);
SV_Nextserver ();
}
typedef struct
{
char *name;
void (*func) (void);
} ucmd_t;
ucmd_t ucmds[] =
{
// auto issued
{"new", SV_New_f},
{"configstrings", SV_Configstrings_f},
{"baselines", SV_Baselines_f},
{"begin", SV_Begin_f},
{"nextserver", SV_Nextserver_f},
{"disconnect", SV_Disconnect_f},
// issued by hand at client consoles
{"info", SV_ShowServerinfo_f},
{"download", SV_BeginDownload_f},
{"nextdl", SV_NextDownload_f},
{NULL, NULL}
};
/*
==================
SV_ExecuteUserCommand
==================
*/
void SV_ExecuteUserCommand (char *s)
{
ucmd_t *u;
Cmd_TokenizeString (s, true);
sv_player = sv_client->edict;
// SV_BeginRedirect (RD_CLIENT);
for (u=ucmds ; u->name ; u++)
if (!strcmp (Cmd_Argv(0), u->name) )
{
u->func ();
break;
}
if (!u->name && sv.state == ss_game)
ge->ClientCommand (sv_player);
// SV_EndRedirect ();
}
/*
===========================================================================
USER CMD EXECUTION
===========================================================================
*/
void SV_ClientThink (client_t *cl, usercmd_t *cmd)
{
cl->commandMsec -= cmd->msec;
if (cl->commandMsec < 0 && sv_enforcetime->value )
{
Com_DPrintf ("commandMsec underflow from %s\n", cl->name);
return;
}
ge->ClientThink (cl->edict, cmd);
}
#define MAX_STRINGCMDS 8
/*
===================
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 (!sv_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;
}
}
}