newtree/source/sv_user.c

/*
	sv_user.c

	server code for moving users

	Copyright (C) 1996-1997  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:

		Free Software Foundation, Inc.
		59 Temple Place - Suite 330
		Boston, MA  02111-1307, USA

	$Id$
*/

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "server.h"
#include "crc.h"
#include "console.h"
#include "msg.h"
#include "world.h"
#include "commdef.h"
#include "cmd.h"
#include "sys.h"
#include "pmove.h"
#include "compat.h"
#include "bothdefs.h"
#include "quakefs.h"
#include "checksum.h"

#include <math.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <ctype.h>

edict_t	*sv_player;

usercmd_t	cmd;

/* cvar_t	cl_rollspeed = {"cl_rollspeed", "200"};
 CVAR_FIXME */
cvar_t	*cl_rollspeed;
/* cvar_t	cl_rollangle = {"cl_rollangle", "2.0"};
 CVAR_FIXME */
cvar_t	*cl_rollangle;
/* cvar_t	sv_spectalk = {"sv_spectalk", "1"};
 CVAR_FIXME */
cvar_t	*sv_spectalk;

/* cvar_t	sv_mapcheck	= {"sv_mapcheck", "1"};
 CVAR_FIXME */
cvar_t	*sv_mapcheck;

/* cvar_t	sv_timekick	= {"sv_timekick", "3", false, true};
 CVAR_FIXME */
cvar_t	*sv_timekick;
/* cvar_t	sv_timekick_fuzz	= {"sv_timekick_fuzz", "10"};
 CVAR_FIXME */
cvar_t	*sv_timekick_fuzz;
/* cvar_t 	sv_timekick_interval	= {"sv_timekick_interval", "30"};
 CVAR_FIXME */
cvar_t 	*sv_timekick_interval;

extern	vec3_t	player_mins;

extern int fp_messages, fp_persecond, fp_secondsdead;
extern char fp_msg[];
/* extern cvar_t pausable;
 CVAR_FIXME */
extern cvar_t *pausable;

void SV_FullClientUpdateToClient (client_t *client, client_t *cl);

/*
============================================================

USER STRINGCMD EXECUTION

host_client and sv_player will be valid.
============================================================
*/

/*
================
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;
	cvar_t		*r_skyname;

	if (host_client->state == cs_spawned)
		return;

	host_client->state = cs_connected;
	host_client->connection_started = realtime;

	// send the info about the new client to all connected clients
//	SV_FullClientUpdate (host_client, &sv.reliable_datagram);
//	host_client->sendinfo = true;

	gamedir = Info_ValueForKey (svs.info, "*gamedir");
	if (!gamedir[0])
		gamedir = "qw";

//NOTE:  This doesn't go through ClientReliableWrite since it's before the user
//spawns.  These functions are written to not overflow
	if (host_client->num_backbuf) {
		Con_Printf("WARNING %s: [SV_New] Back buffered (%d0, clearing", host_client->name, host_client->netchan.message.cursize); 
		host_client->num_backbuf = 0;
		SZ_Clear(&host_client->netchan.message);
	}

	// send the serverdata
	MSG_WriteByte (&host_client->netchan.message, svc_serverdata);
	MSG_WriteLong (&host_client->netchan.message, PROTOCOL_VERSION);
	MSG_WriteLong (&host_client->netchan.message, svs.spawncount);
	MSG_WriteString (&host_client->netchan.message, gamedir);

	playernum = NUM_FOR_EDICT(host_client->edict)-1;
	if (host_client->spectator)
		playernum |= 128;
	MSG_WriteByte (&host_client->netchan.message, playernum);

	// send full levelname
	MSG_WriteString (&host_client->netchan.message, PR_GetString(sv.edicts->v.message));

	// send the movevars
	MSG_WriteFloat(&host_client->netchan.message, movevars.gravity);
	MSG_WriteFloat(&host_client->netchan.message, movevars.stopspeed);
	MSG_WriteFloat(&host_client->netchan.message, movevars.maxspeed);
	MSG_WriteFloat(&host_client->netchan.message, movevars.spectatormaxspeed);
	MSG_WriteFloat(&host_client->netchan.message, movevars.accelerate);
	MSG_WriteFloat(&host_client->netchan.message, movevars.airaccelerate);
	MSG_WriteFloat(&host_client->netchan.message, movevars.wateraccelerate);
	MSG_WriteFloat(&host_client->netchan.message, movevars.friction);
	MSG_WriteFloat(&host_client->netchan.message, movevars.waterfriction);
	MSG_WriteFloat(&host_client->netchan.message, movevars.entgravity);

	// send music
	MSG_WriteByte (&host_client->netchan.message, svc_cdtrack);
	MSG_WriteByte (&host_client->netchan.message, sv.edicts->v.sounds);

	// send server info string
	MSG_WriteByte (&host_client->netchan.message, svc_stufftext);
	MSG_WriteString (&host_client->netchan.message, va("fullserverinfo \"%s\"\n", svs.info) );

	// Send our current skybox
	r_skyname = Cvar_FindVar ("r_skyname");
	if (r_skyname != NULL)
	{
		MSG_WriteByte (&host_client->netchan.message, svc_stufftext);
		MSG_WriteString (&host_client->netchan.message, va("r_skyname %s",
					r_skyname->string));
	}
}

/*
==================
SV_Soundlist_f
==================
*/
void SV_Soundlist_f (void)
{
	char		**s;
	int			n;

	if (host_client->state != cs_connected)
	{
		Con_Printf ("soundlist not valid -- allready spawned\n");
		return;
	}

	// handle the case of a level changing while a client was connecting
	if ( atoi(Cmd_Argv(1)) != svs.spawncount )
	{
		Con_Printf ("SV_Soundlist_f from different level\n");
		SV_New_f ();
		return;
	}

	n = atoi(Cmd_Argv(2));
	
//NOTE:  This doesn't go through ClientReliableWrite since it's before the user
//spawns.  These functions are written to not overflow
	if (host_client->num_backbuf) {
		Con_Printf("WARNING %s: [SV_Soundlist] Back buffered (%d0, clearing", host_client->name, host_client->netchan.message.cursize); 
		host_client->num_backbuf = 0;
		SZ_Clear(&host_client->netchan.message);
	}

	MSG_WriteByte (&host_client->netchan.message, svc_soundlist);
	MSG_WriteByte (&host_client->netchan.message, n);
	for (s = sv.sound_precache+1 + n ; 
		*s && host_client->netchan.message.cursize < (MAX_MSGLEN/2); 
		s++, n++)
		MSG_WriteString (&host_client->netchan.message, *s);

	MSG_WriteByte (&host_client->netchan.message, 0);

	// next msg
	if (*s)
		MSG_WriteByte (&host_client->netchan.message, n);
	else
		MSG_WriteByte (&host_client->netchan.message, 0);
}

/*
==================
SV_Modellist_f
==================
*/
void SV_Modellist_f (void)
{
	char		**s;
	int			n;

	if (host_client->state != cs_connected)
	{
		Con_Printf ("modellist not valid -- allready spawned\n");
		return;
	}
	
	// handle the case of a level changing while a client was connecting
	if ( atoi(Cmd_Argv(1)) != svs.spawncount )
	{
		Con_Printf ("SV_Modellist_f from different level\n");
		SV_New_f ();
		return;
	}

	n = atoi(Cmd_Argv(2));

//NOTE:  This doesn't go through ClientReliableWrite since it's before the user
//spawns.  These functions are written to not overflow
	if (host_client->num_backbuf) {
		Con_Printf("WARNING %s: [SV_Modellist] Back buffered (%d0, clearing", host_client->name, host_client->netchan.message.cursize); 
		host_client->num_backbuf = 0;
		SZ_Clear(&host_client->netchan.message);
	}

	MSG_WriteByte (&host_client->netchan.message, svc_modellist);
	MSG_WriteByte (&host_client->netchan.message, n);
	for (s = sv.model_precache+1+n ; 
		*s && host_client->netchan.message.cursize < (MAX_MSGLEN/2); 
		s++, n++)
		MSG_WriteString (&host_client->netchan.message, *s);
	MSG_WriteByte (&host_client->netchan.message, 0);

	// next msg
	if (*s)
		MSG_WriteByte (&host_client->netchan.message, n);
	else
		MSG_WriteByte (&host_client->netchan.message, 0);
}

/*
==================
SV_PreSpawn_f
==================
*/
void SV_PreSpawn_f (void)
{
	unsigned	buf;
	unsigned	check;

	if (host_client->state != cs_connected)
	{
		Con_Printf ("prespawn not valid -- allready spawned\n");
		return;
	}
	
	// handle the case of a level changing while a client was connecting
	if ( atoi(Cmd_Argv(1)) != svs.spawncount )
	{
		Con_Printf ("SV_PreSpawn_f from different level\n");
		SV_New_f ();
		return;
	}
	
	buf = atoi(Cmd_Argv(2));
	if (buf >= sv.num_signon_buffers)
		buf = 0;

	if (!buf) {
		// should be three numbers following containing checksums
		check = atoi(Cmd_Argv(3));

//		Con_DPrintf("Client check = %d\n", check);

/* 		if (sv_mapcheck.value && check != sv.worldmodel->checksum &&
 CVAR_FIXME */
		if (sv_mapcheck->value && check != sv.worldmodel->checksum &&
			check != sv.worldmodel->checksum2) {
			SV_ClientPrintf (host_client, PRINT_HIGH, 
				"Map model file does not match (%s), %i != %i/%i.\n"
				"You may need a new version of the map, or the proper install files.\n",
				sv.modelname, check, sv.worldmodel->checksum, sv.worldmodel->checksum2);
			SV_DropClient (host_client); 
			return;
		}
		host_client->checksum = check;
	}

//NOTE:  This doesn't go through ClientReliableWrite since it's before the user
//spawns.  These functions are written to not overflow
	if (host_client->num_backbuf) {
		Con_Printf("WARNING %s: [SV_PreSpawn] Back buffered (%d0, clearing", host_client->name, host_client->netchan.message.cursize); 
		host_client->num_backbuf = 0;
		SZ_Clear(&host_client->netchan.message);
	}

	SZ_Write (&host_client->netchan.message, 
		sv.signon_buffers[buf],
		sv.signon_buffer_size[buf]);

	buf++;
	if (buf == sv.num_signon_buffers)
	{	// all done prespawning
		MSG_WriteByte (&host_client->netchan.message, svc_stufftext);
		MSG_WriteString (&host_client->netchan.message, va("cmd spawn %i 0\n",svs.spawncount) );
	}
	else
	{	// need to prespawn more
		MSG_WriteByte (&host_client->netchan.message, svc_stufftext);
		MSG_WriteString (&host_client->netchan.message, 
			va("cmd prespawn %i %i\n", svs.spawncount, buf) );
	}
}

/*
==================
SV_Spawn_f
==================
*/
void SV_Spawn_f (void)
{
	int		i;
	client_t	*client;
	edict_t	*ent;
	eval_t *val;
	int n;

	if (host_client->state != cs_connected)
	{
		Con_Printf ("Spawn not valid -- allready spawned\n");
		return;
	}

// handle the case of a level changing while a client was connecting
	if ( atoi(Cmd_Argv(1)) != svs.spawncount )
	{
		Con_Printf ("SV_Spawn_f from different level\n");
		SV_New_f ();
		return;
	}

	n = atoi(Cmd_Argv(2));

	// make sure n is valid
	if ( n < 0 || n > MAX_CLIENTS )
	{
		Con_Printf ("SV_Spawn_f invalid client start\n");
		SV_New_f ();
		return;
	}


	
// send all current names, colors, and frag counts
	// FIXME: is this a good thing?
	SZ_Clear (&host_client->netchan.message);

// send current status of all other players

	// normally this could overflow, but no need to check due to backbuf
	for (i=n, client = svs.clients + n ; i<MAX_CLIENTS ; i++, client++)
		SV_FullClientUpdateToClient (client, host_client);
	
// send all current light styles
	for (i=0 ; i<MAX_LIGHTSTYLES ; i++)
	{
		ClientReliableWrite_Begin (host_client, svc_lightstyle, 
			3 + (sv.lightstyles[i] ? strlen(sv.lightstyles[i]) : 1));
		ClientReliableWrite_Byte (host_client, (char)i);
		ClientReliableWrite_String (host_client, sv.lightstyles[i]);
	}

	// set up the edict
	ent = host_client->edict;

	memset (&ent->v, 0, progs->entityfields * 4);
	ent->v.colormap = NUM_FOR_EDICT(ent);
	ent->v.team = 0;	// FIXME
	ent->v.netname = PR_SetString(host_client->name);

	host_client->entgravity = 1.0;
	val = GetEdictFieldValue(ent, "gravity");
	if (val)
		val->_float = 1.0;
/* 	host_client->maxspeed = sv_maxspeed.value;
 CVAR_FIXME */
	host_client->maxspeed = sv_maxspeed->value;
	val = GetEdictFieldValue(ent, "maxspeed");
	if (val)
/* 		val->_float = sv_maxspeed.value;
 CVAR_FIXME */
		val->_float = sv_maxspeed->value;

//
// force stats to be updated
//
	memset (host_client->stats, 0, sizeof(host_client->stats));

	ClientReliableWrite_Begin (host_client, svc_updatestatlong, 6);
	ClientReliableWrite_Byte (host_client, STAT_TOTALSECRETS);
	ClientReliableWrite_Long (host_client, pr_global_struct->total_secrets);

	ClientReliableWrite_Begin (host_client, svc_updatestatlong, 6);
	ClientReliableWrite_Byte (host_client, STAT_TOTALMONSTERS);
	ClientReliableWrite_Long (host_client, pr_global_struct->total_monsters);

	ClientReliableWrite_Begin (host_client, svc_updatestatlong, 6);
	ClientReliableWrite_Byte (host_client, STAT_SECRETS);
	ClientReliableWrite_Long (host_client, pr_global_struct->found_secrets);

	ClientReliableWrite_Begin (host_client, svc_updatestatlong, 6);
	ClientReliableWrite_Byte (host_client, STAT_MONSTERS);
	ClientReliableWrite_Long (host_client, pr_global_struct->killed_monsters);

	// get the client to check and download skins
	// when that is completed, a begin command will be issued
	ClientReliableWrite_Begin (host_client, svc_stufftext, 8);
	ClientReliableWrite_String (host_client, "skins\n" );

}

/*
==================
SV_SpawnSpectator
==================
*/
void SV_SpawnSpectator (void)
{
	int		i;
	edict_t	*e;

	VectorCopy (vec3_origin, sv_player->v.origin);
	VectorCopy (vec3_origin, sv_player->v.view_ofs);
	sv_player->v.view_ofs[2] = 22;

	// search for an info_playerstart to spawn the spectator at
	for (i=MAX_CLIENTS-1 ; i<sv.num_edicts ; i++)
	{
		e = EDICT_NUM(i);
		if (!strcmp(PR_GetString(e->v.classname), "info_player_start"))
		{
			VectorCopy (e->v.origin, sv_player->v.origin);
			return;
		}
	}

}

/*
==================
SV_Begin_f
==================
*/
void SV_Begin_f (void)
{
	unsigned pmodel = 0, emodel = 0;
	int		i;

	if (host_client->state == cs_spawned)
		return; // don't begin again

	host_client->state = cs_spawned;
	
	// handle the case of a level changing while a client was connecting
	if ( atoi(Cmd_Argv(1)) != svs.spawncount )
	{
		Con_Printf ("SV_Begin_f from different level\n");
		SV_New_f ();
		return;
	}

	if (host_client->spectator)
	{
		SV_SpawnSpectator ();

		if (SpectatorConnect) {
			// copy spawn parms out of the client_t
			for (i=0 ; i< NUM_SPAWN_PARMS ; i++)
				(&pr_global_struct->parm1)[i] = host_client->spawn_parms[i];
	
			// call the spawn function
			pr_global_struct->time = sv.time;
			pr_global_struct->self = EDICT_TO_PROG(sv_player);
			PR_ExecuteProgram (SpectatorConnect);
		}
	}
	else
	{
		// copy spawn parms out of the client_t
		for (i=0 ; i< NUM_SPAWN_PARMS ; i++)
			(&pr_global_struct->parm1)[i] = host_client->spawn_parms[i];

		// call the spawn function
		pr_global_struct->time = sv.time;
		pr_global_struct->self = EDICT_TO_PROG(sv_player);
		PR_ExecuteProgram (pr_global_struct->ClientConnect);

		// actually spawn the player
		pr_global_struct->time = sv.time;
		pr_global_struct->self = EDICT_TO_PROG(sv_player);
		PR_ExecuteProgram (pr_global_struct->PutClientInServer);	
	}

	// clear the net statistics, because connecting gives a bogus picture
	host_client->netchan.frame_latency = 0;
	host_client->netchan.frame_rate = 0;
	host_client->netchan.drop_count = 0;
	host_client->netchan.good_count = 0;

	//check he's not cheating

	pmodel = atoi(Info_ValueForKey (host_client->userinfo, "pmodel"));
	emodel = atoi(Info_ValueForKey (host_client->userinfo, "emodel"));

	if (pmodel != sv.model_player_checksum ||
		emodel != sv.eyes_player_checksum)
		SV_BroadcastPrintf (PRINT_HIGH, "%s WARNING: non standard player/eyes model detected\n", host_client->name);

	// if we are paused, tell the client
	if (sv.paused) {
		ClientReliableWrite_Begin (host_client, svc_setpause, 2);
		ClientReliableWrite_Byte (host_client, sv.paused);
		SV_ClientPrintf(host_client, PRINT_HIGH, "Server is paused.\n");
	}

#if 0
//
// send a fixangle over the reliable channel to make sure it gets there
// Never send a roll angle, because savegames can catch the server
// in a state where it is expecting the client to correct the angle
// and it won't happen if the game was just loaded, so you wind up
// with a permanent head tilt
	ent = EDICT_NUM( 1 + (host_client - svs.clients) );
	MSG_WriteByte (&host_client->netchan.message, svc_setangle);
	for (i=0 ; i < 2 ; i++)
		MSG_WriteAngle (&host_client->netchan.message, ent->v.angles[i] );
	MSG_WriteAngle (&host_client->netchan.message, 0 );
#endif
}

//=============================================================================

/*
==================
SV_NextDownload_f
==================
*/
void SV_NextDownload_f (void)
{
	byte	buffer[1024];
	int		r;
	int		percent;
	int		size;

	if (!host_client->download)
		return;

	r = host_client->downloadsize - host_client->downloadcount;
	if (r > 768)
		r = 768;
	r = Qread (host_client->download, buffer, r);
	ClientReliableWrite_Begin (host_client, svc_download, 6+r);
	ClientReliableWrite_Short (host_client, r);

	host_client->downloadcount += r;
	size = host_client->downloadsize;
	if (!size)
		size = 1;
	percent = host_client->downloadcount*100/size;
	ClientReliableWrite_Byte (host_client, percent);
	ClientReliableWrite_SZ (host_client, buffer, r);

	if (host_client->downloadcount != host_client->downloadsize)
		return;

	Qclose (host_client->download);
	host_client->download = NULL;

}

void OutofBandPrintf(netadr_t where, char *fmt, ...)
{
	va_list		argptr;
	char	send[1024];
	
	send[0] = 0xff;
	send[1] = 0xff;
	send[2] = 0xff;
	send[3] = 0xff;
	send[4] = A2C_PRINT;
	va_start (argptr, fmt);
	vsnprintf (send+5, sizeof(send-5), fmt, argptr);
	va_end (argptr);

	NET_SendPacket (strlen(send)+1, send, where);
}

/*
==================
SV_NextUpload
==================
*/
void SV_NextUpload (void)
{
	int		percent;
	int		size;

	if (!*host_client->uploadfn) {
		SV_ClientPrintf(host_client, PRINT_HIGH, "Upload denied\n");
		ClientReliableWrite_Begin (host_client, svc_stufftext, 8);
		ClientReliableWrite_String (host_client, "stopul");

		// suck out rest of packet
		size = MSG_ReadShort ();	MSG_ReadByte ();
		msg_readcount += size;
		return;
	}

	size = MSG_ReadShort ();
	percent = MSG_ReadByte ();

	if (!host_client->upload)
	{
		host_client->upload = Qopen(host_client->uploadfn, "wb");
		if (!host_client->upload) {
			Sys_Printf("Can't create %s\n", host_client->uploadfn);
			ClientReliableWrite_Begin (host_client, svc_stufftext, 8);
			ClientReliableWrite_String (host_client, "stopul");
			*host_client->uploadfn = 0;
			return;
		}
		Sys_Printf("Receiving %s from %d...\n", host_client->uploadfn, host_client->userid);
		if (host_client->remote_snap)
			OutofBandPrintf(host_client->snap_from, "Server receiving %s from %d...\n", host_client->uploadfn, host_client->userid);
	}

	Qwrite (host_client->upload, net_message.data + msg_readcount, size);
	msg_readcount += size;

Con_DPrintf ("UPLOAD: %d received\n", size);

	if (percent != 100) {
		ClientReliableWrite_Begin (host_client, svc_stufftext, 8);
		ClientReliableWrite_String (host_client, "nextul\n");
	} else {
		Qclose (host_client->upload);
		host_client->upload = NULL;

		Sys_Printf("%s upload completed.\n", host_client->uploadfn);

		if (host_client->remote_snap) {
			char *p;

			if ((p = strchr(host_client->uploadfn, '/')) != NULL)
				p++;
			else
				p = host_client->uploadfn;
			OutofBandPrintf(host_client->snap_from, "%s upload completed.\nTo download, enter:\ndownload %s\n", 
				host_client->uploadfn, p);
		}
	}

}

/*
==================
SV_BeginDownload_f
==================
*/
void SV_BeginDownload_f(void)
{
	char	*name;
/* 	extern	cvar_t	allow_download;
 CVAR_FIXME */
	extern	cvar_t	*allow_download;
/* 	extern	cvar_t	allow_download_skins;
 CVAR_FIXME */
	extern	cvar_t	*allow_download_skins;
/* 	extern	cvar_t	allow_download_models;
 CVAR_FIXME */
	extern	cvar_t	*allow_download_models;
/* 	extern	cvar_t	allow_download_sounds;
 CVAR_FIXME */
	extern	cvar_t	*allow_download_sounds;
/* 	extern	cvar_t	allow_download_maps;
 CVAR_FIXME */
	extern	cvar_t	*allow_download_maps;
	extern	int		file_from_pak; // ZOID did file come from pak?

	name = Cmd_Argv(1);
// hacked by zoid to allow more conrol over download
		// first off, no .. or global allow check
/* 	if (strstr (name, "..") || !allow_download.value
 CVAR_FIXME */
	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, "skins/", 6) == 0 && !allow_download_skins.value)
 CVAR_FIXME */
		|| (strncmp(name, "skins/", 6) == 0 && !allow_download_skins->value)
		// now models
/* 		|| (strncmp(name, "progs/", 6) == 0 && !allow_download_models.value)
 CVAR_FIXME */
		|| (strncmp(name, "progs/", 6) == 0 && !allow_download_models->value)
		// now sounds
/* 		|| (strncmp(name, "sound/", 6) == 0 && !allow_download_sounds.value)
 CVAR_FIXME */
		|| (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)
 CVAR_FIXME */
		|| (strncmp(name, "maps/", 6) == 0 && !allow_download_maps->value)
		// MUST be in a subdirectory	
		|| !strstr (name, "/") )	
	{	// don't allow anything with .. path
		ClientReliableWrite_Begin (host_client, svc_download, 4);
		ClientReliableWrite_Short (host_client, -1);
		ClientReliableWrite_Byte (host_client, 0);
		return;
	}

	if (host_client->download) {
		Qclose (host_client->download);
		host_client->download = NULL;
	}

	// lowercase name (needed for casesen file systems)
	{
		char *p;

		for (p = name; *p; p++)
			*p = tolower((int)*p);
	}

	host_client->downloadsize = COM_FOpenFile (name, &host_client->download);
	host_client->downloadcount = 0;

	if (!host_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))
	{
		if (host_client->download) {
			Qclose(host_client->download);
			host_client->download = NULL;
		}

		Sys_Printf ("Couldn't download %s to %s\n", name, host_client->name);
		ClientReliableWrite_Begin (host_client, svc_download, 4);
		ClientReliableWrite_Short (host_client, -1);
		ClientReliableWrite_Byte (host_client, 0);
		return;
	}

	SV_NextDownload_f ();
	Sys_Printf ("Downloading %s to %s\n", name, host_client->name);
}

//=============================================================================

/*
==================
SV_Say
==================
*/
void SV_Say (qboolean team)
{
	client_t *client;
	int		j, tmp;
	char	*p;
	char	text[2048];
	char	t1[32], *t2;

	if (Cmd_Argc () < 2)
		return;

	if (team)
	{
		strncpy (t1, Info_ValueForKey (host_client->userinfo, "team"), 31);
		t1[31] = 0;
	}

/* 	if (host_client->spectator && (!sv_spectalk.value || team))
 CVAR_FIXME */
	if (host_client->spectator && (!sv_spectalk->value || team))
		snprintf (text, sizeof(text), "[SPEC] %s: ", host_client->name);
	else if (team)
		snprintf (text, sizeof(text), "(%s): ", host_client->name);
	else {
		snprintf (text, sizeof(text), "%s: ", host_client->name);
	}

	if (fp_messages) {
		if (!sv.paused && realtime<host_client->lockedtill) {
			SV_ClientPrintf(host_client, PRINT_CHAT,
				"You can't talk for %d more seconds\n", 
					(int) (host_client->lockedtill - realtime));
			return;
		}
		tmp = host_client->whensaidhead - fp_messages + 1;
		if (tmp < 0)
			tmp = 10+tmp;
		if (!sv.paused &&
			host_client->whensaid[tmp] && (realtime-host_client->whensaid[tmp] < fp_persecond)) {
			host_client->lockedtill = realtime + fp_secondsdead;
			if (fp_msg[0])
				SV_ClientPrintf(host_client, PRINT_CHAT,
					"FloodProt: %s\n", fp_msg);
			else
				SV_ClientPrintf(host_client, PRINT_CHAT,
					"FloodProt: You can't talk for %d seconds.\n", fp_secondsdead);
			return;
		}
		host_client->whensaidhead++;
		if (host_client->whensaidhead > 9)
			host_client->whensaidhead = 0;
		host_client->whensaid[host_client->whensaidhead] = realtime;
	}

	p = Cmd_Args();

	if (*p == '"')
	{
		p++;
		p[strlen(p)-1] = 0;
	}

	strcat(text, p);
	strcat(text, "\n");

	Sys_Printf ("%s", text);

	for (j = 0, client = svs.clients; j < MAX_CLIENTS; j++, client++)
	{
		if (client->state != cs_spawned)
			continue;
/* 		if (host_client->spectator && !sv_spectalk.value)
 CVAR_FIXME */
		if (host_client->spectator && !sv_spectalk->value)
			if (!client->spectator)
				continue;

		if (team)
		{
			// the spectator team
			if (host_client->spectator) {
				if (!client->spectator)
					continue;
			} else {
				t2 = Info_ValueForKey (client->userinfo, "team");
				if (strcmp(t1, t2) || client->spectator)
					continue;	// on different teams
			}
		}
		SV_ClientPrintf(client, PRINT_CHAT, "%s", text);
	}
}


/*
==================
SV_Say_f
==================
*/
void SV_Say_f(void)
{
	SV_Say (false);
}
/*
==================
SV_Say_Team_f
==================
*/
void SV_Say_Team_f(void)
{
	SV_Say (true);
}



//============================================================================

/*
=================
SV_Pings_f

The client is showing the scoreboard, so send new ping times for all
clients
=================
*/
void SV_Pings_f (void)
{
	client_t *client;
	int		j;

	for (j = 0, client = svs.clients; j < MAX_CLIENTS; j++, client++)
	{
		if (client->state != cs_spawned)
			continue;

		ClientReliableWrite_Begin (host_client, svc_updateping, 4);
		ClientReliableWrite_Byte (host_client, j);
		ClientReliableWrite_Short (host_client, SV_CalcPing(client));
		ClientReliableWrite_Begin (host_client, svc_updatepl, 4);
		ClientReliableWrite_Byte (host_client, j);
		ClientReliableWrite_Byte (host_client, client->lossage);
	}
}



/*
==================
SV_Kill_f
==================
*/
void SV_Kill_f (void)
{
	if (sv_player->v.health <= 0)
	{
		SV_ClientPrintf (host_client, PRINT_HIGH, "Can't suicide -- allready dead!\n");
		return;
	}
	
	pr_global_struct->time = sv.time;
	pr_global_struct->self = EDICT_TO_PROG(sv_player);
	PR_ExecuteProgram (pr_global_struct->ClientKill);
}

/*
==================
SV_TogglePause
==================
*/
void SV_TogglePause (const char *msg)
{
	int i;
	client_t *cl;

	sv.paused ^= 1;

	if (msg)
		SV_BroadcastPrintf (PRINT_HIGH, "%s", msg);

	// send notification to all clients
	for (i=0, cl = svs.clients ; i<MAX_CLIENTS ; i++, cl++)
	{
		if (!cl->state)
			continue;
		ClientReliableWrite_Begin (cl, svc_setpause, 2);
		ClientReliableWrite_Byte (cl, sv.paused);
	}
}


/*
==================
SV_Pause_f
==================
*/
void SV_Pause_f (void)
{
	char st[sizeof(host_client->name) + 32];

/* 	if (!pausable.value) {
 CVAR_FIXME */
	if (!pausable->value) {
		SV_ClientPrintf (host_client, PRINT_HIGH, "Pause not allowed.\n");
		return;
	}

	if (host_client->spectator) {
		SV_ClientPrintf (host_client, PRINT_HIGH, "Spectators can not pause.\n");
		return;
	}

	if (sv.paused)
		snprintf (st, sizeof(st), "%s paused the game\n", host_client->name);
	else
		snprintf (st, sizeof(st), "%s unpaused the game\n", host_client->name);

	SV_TogglePause(st);
}


/*
=================
SV_Drop_f

The client is going to disconnect, so remove the connection immediately
=================
*/
void SV_Drop_f (void)
{
	SV_EndRedirect ();
	if (!host_client->spectator)
		SV_BroadcastPrintf (PRINT_HIGH, "%s dropped\n", host_client->name);
	SV_DropClient (host_client);	
}

/*
=================
SV_PTrack_f

Change the bandwidth estimate for a client
=================
*/
void SV_PTrack_f (void)
{
	int		i;
	edict_t *ent, *tent;
	
	if (!host_client->spectator)
		return;

	if (Cmd_Argc() != 2)
	{
		// turn off tracking
		host_client->spec_track = 0;
		ent = EDICT_NUM(host_client - svs.clients + 1);
		tent = EDICT_NUM(0);
		ent->v.goalentity = EDICT_TO_PROG(tent);
		return;
	}
	
	i = atoi(Cmd_Argv(1));
	if (i < 0 || i >= MAX_CLIENTS || svs.clients[i].state != cs_spawned ||
		svs.clients[i].spectator) {
		SV_ClientPrintf (host_client, PRINT_HIGH, "Invalid client to track\n");
		host_client->spec_track = 0;
		ent = EDICT_NUM(host_client - svs.clients + 1);
		tent = EDICT_NUM(0);
		ent->v.goalentity = EDICT_TO_PROG(tent);
		return;
	}
	host_client->spec_track = i + 1; // now tracking

	ent = EDICT_NUM(host_client - svs.clients + 1);
	tent = EDICT_NUM(i + 1);
	ent->v.goalentity = EDICT_TO_PROG(tent);
}


/*
=================
SV_Rate_f

Change the bandwidth estimate for a client
=================
*/
void SV_Rate_f (void)
{
	int		rate;
	
	if (Cmd_Argc() != 2)
	{
		SV_ClientPrintf (host_client, PRINT_HIGH, "Current rate is %i\n",
			(int)(1.0/host_client->netchan.rate + 0.5));
		return;
	}
	
	rate = atoi(Cmd_Argv(1));
	if (rate < 500)
		rate = 500;
	if (rate > 10000)
		rate = 10000;

	SV_ClientPrintf (host_client, PRINT_HIGH, "Net rate set to %i\n", rate);
	host_client->netchan.rate = 1.0/rate;
}


/*
=================
SV_Msg_f

Change the message level for a client
=================
*/
void SV_Msg_f (void)
{	
	if (Cmd_Argc() != 2)
	{
		SV_ClientPrintf (host_client, PRINT_HIGH, "Current msg level is %i\n",
			host_client->messagelevel);
		return;
	}
	
	host_client->messagelevel = atoi(Cmd_Argv(1));

	SV_ClientPrintf (host_client, PRINT_HIGH, "Msg level set to %i\n", host_client->messagelevel);
}

/*
==================
SV_SetInfo_f

Allow clients to change userinfo
==================
*/
void SV_SetInfo_f (void)
{
	int i;
	char oldval[MAX_INFO_STRING];


	if (Cmd_Argc() == 1)
	{
		Con_Printf ("User info settings:\n");
		Info_Print (host_client->userinfo);
		return;
	}

	if (Cmd_Argc() != 3)
	{
		Con_Printf ("usage: setinfo [ <key> <value> ]\n");
		return;
	}

	if (Cmd_Argv(1)[0] == '*')
		return;		// don't set priveledged values

	strcpy(oldval, Info_ValueForKey(host_client->userinfo, Cmd_Argv(1)));

	Info_SetValueForKey (host_client->userinfo, Cmd_Argv(1), Cmd_Argv(2), MAX_INFO_STRING);
// name is extracted below in ExtractFromUserInfo
//	strncpy (host_client->name, Info_ValueForKey (host_client->userinfo, "name")
//		, sizeof(host_client->name)-1);	
//	SV_FullClientUpdate (host_client, &sv.reliable_datagram);
//	host_client->sendinfo = true;

	if (!strcmp(Info_ValueForKey(host_client->userinfo, Cmd_Argv(1)), oldval))
		return; // key hasn't changed

	// process any changed values
	SV_ExtractFromUserinfo (host_client);

	i = host_client - svs.clients;
	MSG_WriteByte (&sv.reliable_datagram, svc_setinfo);
	MSG_WriteByte (&sv.reliable_datagram, i);
	MSG_WriteString (&sv.reliable_datagram, Cmd_Argv(1));
	MSG_WriteString (&sv.reliable_datagram, Info_ValueForKey(host_client->userinfo, Cmd_Argv(1)));
}

/*
==================
SV_ShowServerinfo_f

Dumps the serverinfo info string
==================
*/
void SV_ShowServerinfo_f (void)
{
	Info_Print (svs.info);
}

void SV_NoSnap_f(void)
{
	if (*host_client->uploadfn) {
		*host_client->uploadfn = 0;
		SV_BroadcastPrintf (PRINT_HIGH, "%s refused remote screenshot\n", host_client->name);
	}
}

typedef struct
{
	char	*name;
	void	(*func) (void);
} ucmd_t;

ucmd_t ucmds[] =
{
	{"new", SV_New_f},
	{"modellist", SV_Modellist_f},
	{"soundlist", SV_Soundlist_f},
	{"prespawn", SV_PreSpawn_f},
	{"spawn", SV_Spawn_f},
	{"begin", SV_Begin_f},

	{"drop", SV_Drop_f},
	{"pings", SV_Pings_f},

// issued by hand at client consoles	
	{"rate", SV_Rate_f},
	{"kill", SV_Kill_f},
	{"pause", SV_Pause_f},
	{"msg", SV_Msg_f},

	{"say", SV_Say_f},
	{"say_team", SV_Say_Team_f},

	{"setinfo", SV_SetInfo_f},

	{"serverinfo", SV_ShowServerinfo_f},

	{"download", SV_BeginDownload_f},
	{"nextdl", SV_NextDownload_f},

	{"ptrack", SV_PTrack_f}, //ZOID - used with autocam

	{"snap", SV_NoSnap_f},
	
	{NULL, NULL}
};

/*
==================
SV_ExecuteUserCommand
==================
*/
void SV_ExecuteUserCommand (char *s)
{
	ucmd_t	*u;
	
	Cmd_TokenizeString (s);
	sv_player = host_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)
		Con_Printf ("Bad user command: %s\n", Cmd_Argv(0));

	SV_EndRedirect ();
}

/*
===========================================================================

USER CMD EXECUTION

===========================================================================
*/

/*
===============
V_CalcRoll

Used by view and sv_user
===============
*/
float V_CalcRoll (vec3_t angles, vec3_t velocity)
{
	vec3_t	forward, right, up;
	float	sign;
	float	side;
	float	value;
	
	AngleVectors (angles, forward, right, up);
	side = DotProduct (velocity, right);
	sign = side < 0 ? -1 : 1;
	side = fabs(side);
	
/* 	value = cl_rollangle.value;
 CVAR_FIXME */
	value = cl_rollangle->value;

/* 	if (side < cl_rollspeed.value)
 CVAR_FIXME */
	if (side < cl_rollspeed->value)
/* 		side = side * value / cl_rollspeed.value;
 CVAR_FIXME */
		side = side * value / cl_rollspeed->value;
	else
		side = value;
	
	return side*sign;
	
}




//============================================================================

vec3_t	pmove_mins, pmove_maxs;

/*
====================
AddLinksToPmove

====================
*/
void AddLinksToPmove ( areanode_t *node )
{
	link_t		*l, *next;
	edict_t		*check;
	int			pl;
	int			i;
	physent_t	*pe;

	pl = EDICT_TO_PROG(sv_player);

	// touch linked edicts
	for (l = node->solid_edicts.next ; l != &node->solid_edicts ; l = next)
	{
		next = l->next;
		check = EDICT_FROM_AREA(l);

		if (check->v.owner == pl)
			continue;		// player's own missile
		if (check->v.solid == SOLID_BSP 
			|| check->v.solid == SOLID_BBOX 
			|| check->v.solid == SOLID_SLIDEBOX)
		{
			if (check == sv_player)
				continue;

			for (i=0 ; i<3 ; i++)
				if (check->v.absmin[i] > pmove_maxs[i]
				|| check->v.absmax[i] < pmove_mins[i])
					break;
			if (i != 3)
				continue;
			if (pmove.numphysent == MAX_PHYSENTS)
				return;
			pe = &pmove.physents[pmove.numphysent];
			pmove.numphysent++;

			VectorCopy (check->v.origin, pe->origin);
			pe->info = NUM_FOR_EDICT(check);
			if (check->v.solid == SOLID_BSP)
				pe->model = sv.models[(int)(check->v.modelindex)];
			else
			{
				pe->model = NULL;
				VectorCopy (check->v.mins, pe->mins);
				VectorCopy (check->v.maxs, pe->maxs);
			}
		}
	}
	
// recurse down both sides
	if (node->axis == -1)
		return;

	if ( pmove_maxs[node->axis] > node->dist )
		AddLinksToPmove ( node->children[0] );
	if ( pmove_mins[node->axis] < node->dist )
		AddLinksToPmove ( node->children[1] );
}


/*
================
AddAllEntsToPmove

For debugging
================
*/
void AddAllEntsToPmove (void)
{
	int			e;
	edict_t		*check;
	int			i;
	physent_t	*pe;
	int			pl;

	pl = EDICT_TO_PROG(sv_player);
	check = NEXT_EDICT(sv.edicts);
	for (e=1 ; e<sv.num_edicts ; e++, check = NEXT_EDICT(check))
	{
		if (check->free)
			continue;
		if (check->v.owner == pl)
			continue;
		if (check->v.solid == SOLID_BSP 
			|| check->v.solid == SOLID_BBOX 
			|| check->v.solid == SOLID_SLIDEBOX)
		{
			if (check == sv_player)
				continue;

			for (i=0 ; i<3 ; i++)
				if (check->v.absmin[i] > pmove_maxs[i]
				|| check->v.absmax[i] < pmove_mins[i])
					break;
			if (i != 3)
				continue;
			pe = &pmove.physents[pmove.numphysent];

			VectorCopy (check->v.origin, pe->origin);
			pmove.physents[pmove.numphysent].info = e;
			if (check->v.solid == SOLID_BSP)
				pe->model = sv.models[(int)(check->v.modelindex)];
			else
			{
				pe->model = NULL;
				VectorCopy (check->v.mins, pe->mins);
				VectorCopy (check->v.maxs, pe->maxs);
			}

			if (++pmove.numphysent == MAX_PHYSENTS)
				break;
		}
	}
}

/*
===========
SV_PreRunCmd
===========
Done before running a player command.  Clears the touch array
*/
byte playertouch[(MAX_EDICTS+7)/8];

void SV_PreRunCmd(void)
{
	memset(playertouch, 0, sizeof(playertouch));
}

/*
===========
SV_RunCmd
===========
*/
void SV_RunCmd (usercmd_t *ucmd, qboolean inside)
{
        edict_t *ent;
        int             i, n, oldmsec;
        double  tmp_time;

        // To prevent a infinite loop
        if (!inside) {
                host_client->msecs += ucmd->msec;

/*                 if ((sv_timekick.value >= 1) &&
 CVAR_FIXME */
                if ((sv_timekick->value >= 1) &&
/*                         (tmp_time = realtime - host_client->last_check) >= sv_timekick_interval.value) {
 CVAR_FIXME */
                        (tmp_time = realtime - host_client->last_check) >= sv_timekick_interval->value) {
/*                         tmp_time *= (1000 + sv_timekick_fuzz.value);
 CVAR_FIXME */
                        tmp_time *= (1000 + sv_timekick_fuzz->value);
                        if (host_client->msecs > (int) tmp_time) {
                                host_client->msec_cheating++;
                                SV_BroadcastPrintf( PRINT_HIGH,
                                                va("%s thinks %d msecs pass in %f msecs. (Strike %d/%d)\n",
                                                host_client->name, host_client->msecs, tmp_time,
/*                                                 host_client->msec_cheating, (int)sv_timekick.value));
 CVAR_FIXME */
                                                host_client->msec_cheating, (int)sv_timekick->value));

/*                                 if (host_client->msec_cheating >= sv_timekick.value) {
 CVAR_FIXME */
                                if (host_client->msec_cheating >= sv_timekick->value) {
                                                SV_BroadcastPrintf(PRINT_HIGH, va("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 infomation on QuakeForge's time cheat protection, and to explain how some may be cheating without knowing it.\n"
);
                                        SV_DropClient(host_client);
                                }
                    }

                    host_client->msecs = 0;
                    host_client->last_check = realtime;
                }
        }

        cmd = *ucmd;

        // chop up very long commands
        if (cmd.msec > 50) {
                oldmsec = ucmd->msec;
                cmd.msec = oldmsec/2;
                SV_RunCmd (&cmd, 1);
                cmd.msec = oldmsec/2;
                cmd.impulse = 0;
                SV_RunCmd (&cmd, 1);
                return;
        }

        if (!sv_player->v.fixangle)
                VectorCopy (ucmd->angles, sv_player->v.v_angle);

        sv_player->v.button0 = ucmd->buttons & 1;
        sv_player->v.button2 = (ucmd->buttons & 2)>>1;
        if (ucmd->impulse)
                sv_player->v.impulse = ucmd->impulse;

//
// angles
// show 1/3 the pitch angle and all the roll angle
        if (sv_player->v.health > 0) {
                if (!sv_player->v.fixangle) {
                        sv_player->v.angles[PITCH] = -sv_player->v.v_angle[PITCH
]/3;
                        sv_player->v.angles[YAW] = sv_player->v.v_angle[YAW];
                }
                sv_player->v.angles[ROLL] =
                        V_CalcRoll (sv_player->v.angles, sv_player->v.velocity)*
4;
        }

        host_frametime = min(0.1, ucmd->msec * 0.001);
        
        if (!host_client->spectator) {
                pr_global_struct->frametime = host_frametime;

                pr_global_struct->time = sv.time;
                pr_global_struct->self = EDICT_TO_PROG(sv_player);
                PR_ExecuteProgram (pr_global_struct->PlayerPreThink);

                SV_RunThink (sv_player);
        }

        for (i=0 ; i<3 ; i++)
                pmove.origin[i] = sv_player->v.origin[i] + (sv_player->v.mins[i]
 - player_mins[i]);
        VectorCopy (sv_player->v.velocity, pmove.velocity);
        VectorCopy (sv_player->v.v_angle, pmove.angles);

        pmove.flying = sv_player->v.movetype == MOVETYPE_FLY;
        pmove.spectator = host_client->spectator;
        pmove.waterjumptime = sv_player->v.teleport_time;
        pmove.numphysent = 1;
        pmove.physents[0].model = sv.worldmodel;
        pmove.cmd = *ucmd;
        pmove.dead = sv_player->v.health <= 0;
        pmove.oldbuttons = host_client->oldbuttons;

        movevars.entgravity = host_client->entgravity;
        movevars.maxspeed = host_client->maxspeed;

        for (i=0 ; i<3 ; i++) {
                pmove_mins[i] = pmove.origin[i] - 256;
                pmove_maxs[i] = pmove.origin[i] + 256;
        }
#if 1
        AddLinksToPmove ( sv_areanodes );
#else
        AddAllEntsToPmove ();
#endif

#if 0
{
        int before, after;

before = PM_TestPlayerPosition (pmove.origin);
        PlayerMove ();
after = PM_TestPlayerPosition (pmove.origin);

if (sv_player->v.health > 0 && before && !after )
        Con_Printf ("player %s got stuck in playermove!!!!\n", host_client->name
);
}
#else
        PlayerMove ();
#endif

        host_client->oldbuttons = pmove.oldbuttons;
        sv_player->v.teleport_time = pmove.waterjumptime;
        sv_player->v.waterlevel = waterlevel;
        sv_player->v.watertype = watertype;
        if (onground != -1) {
                sv_player->v.flags = (int)sv_player->v.flags | FL_ONGROUND;
                sv_player->v.groundentity = EDICT_TO_PROG(EDICT_NUM(pmove.physents[onground].info));
        } else {
                sv_player->v.flags = (int)sv_player->v.flags & ~FL_ONGROUND;
        }
        for (i=0 ; i<3 ; i++)
                sv_player->v.origin[i] = pmove.origin[i] - (sv_player->v.mins[i]
 - player_mins[i]);

#if 0
        // truncate velocity the same way the net protocol will
        for (i=0 ; i<3 ; i++)
                sv_player->v.velocity[i] = (int)pmove.velocity[i];
#else
        VectorCopy (pmove.velocity, sv_player->v.velocity);
#endif

        VectorCopy (pmove.angles, sv_player->v.v_angle);

        if (!host_client->spectator) {
                // link into place and touch triggers
                SV_LinkEdict (sv_player, true);

                // touch other objects
                for (i=0 ; i<pmove.numtouch ; i++) {
                        n = pmove.physents[pmove.touchindex[i]].info;
                        ent = EDICT_NUM(n);
                        if (!ent->v.touch || (playertouch[n/8]&(1<<(n%8))))
                                continue;
                        pr_global_struct->self = EDICT_TO_PROG(ent);
                        pr_global_struct->other = EDICT_TO_PROG(sv_player);
                        PR_ExecuteProgram (ent->v.touch);
                        playertouch[n/8] |= 1 << (n%8);
                }
        }
}

/*
===========
SV_PostRunCmd
===========
Done after running a player command.
*/
void SV_PostRunCmd(void)
{
	// run post-think

	if (!host_client->spectator) {
		pr_global_struct->time = sv.time;
		pr_global_struct->self = EDICT_TO_PROG(sv_player);
		PR_ExecuteProgram (pr_global_struct->PlayerPostThink);
		SV_RunNewmis ();
	} else if (SpectatorThink) {
		pr_global_struct->time = sv.time;
		pr_global_struct->self = EDICT_TO_PROG(sv_player);
		PR_ExecuteProgram (SpectatorThink);
	}
}


/*
===================
SV_ExecuteClientMessage

The current net_message is parsed for the given client
===================
*/
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)
                        return; // Ender: Patched :)
				
		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, 0);
						net_drop--;
					}
					if (net_drop > 1)
						SV_RunCmd (&oldest, 0);
					if (net_drop > 0)
						SV_RunCmd (&oldcmd, 0);
				}
				SV_RunCmd (&newcmd, 0);

				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;

		}
	}
}

/*
==============
SV_UserInit
==============
*/
void SV_UserInit (void)
{
/* 	Cvar_RegisterVariable (&cl_rollspeed);
 CVAR_FIXME */
	cl_rollspeed = Cvar_Get("cl_rollspeed",  "200", CVAR_NONE, "None");
/* 	Cvar_RegisterVariable (&cl_rollangle);
 CVAR_FIXME */
	cl_rollangle = Cvar_Get("cl_rollangle",  "2.0", CVAR_NONE, "None");
/* 	Cvar_RegisterVariable (&sv_spectalk);
 CVAR_FIXME */
	sv_spectalk = Cvar_Get("sv_spectalk",  "1", CVAR_NONE, "None");
/* 	Cvar_RegisterVariable (&sv_mapcheck);
 CVAR_FIXME */
	sv_mapcheck = Cvar_Get("sv_mapcheck",  "1", CVAR_NONE, "None");
}