sv_user.c

Quake 2 Source code for students by Theerthan You can also download from idsoftwares.com

/*
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 "server.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