// Copyright (C) 1999-2000 Id Software, Inc.
//

/*
 *  Portions Copyright (C) 2000-2001 Tim Angus
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation; either version 2.1, 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 Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser 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.
 */

/*  To assertain which portions are licensed under the LGPL and which are
 *  licensed by Id Software, Inc. please run a diff between the equivalent
 *  versions of the "Tremulous" modification and the unmodified "Quake3"
 *  game source code.
 */
                    
// this file holds commands that can be executed by the server console, but not remote clients

#include "g_local.h"


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

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.

g_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.


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

// extern vmCvar_t  g_banIPs;
// extern vmCvar_t  g_filterBan;


typedef struct ipFilter_s
{
  unsigned  mask;
  unsigned  compare;
} ipFilter_t;

#define MAX_IPFILTERS 1024

static ipFilter_t ipFilters[MAX_IPFILTERS];
static int      numIPFilters;

/*
=================
StringToFilter
=================
*/
static qboolean StringToFilter (char *s, ipFilter_t *f)
{
  char  num[128];
  int   i, j;
  byte  b[4];
  byte  m[4];

  for (i=0 ; i<4 ; i++)
  {
    b[i] = 0;
    m[i] = 0;
  }

  for (i=0 ; i<4 ; i++)
  {
    if (*s < '0' || *s > '9')
    {
      G_Printf( "Bad filter address: %s\n", s );
      return qfalse;
    }

    j = 0;
    while (*s >= '0' && *s <= '9')
    {
      num[j++] = *s++;
    }
    num[j] = 0;
    b[i] = atoi(num);
    if (b[i] != 0)
      m[i] = 255;

    if (!*s)
      break;
    s++;
  }

  f->mask = *(unsigned *)m;
  f->compare = *(unsigned *)b;

  return qtrue;
}

/*
=================
UpdateIPBans
=================
*/
static void UpdateIPBans (void)
{
  byte  b[4];
  int   i;
  char  iplist[MAX_INFO_STRING];

  *iplist = 0;
  for (i = 0 ; i < numIPFilters ; i++)
  {
    if (ipFilters[i].compare == 0xffffffff)
      continue;

    *(unsigned *)b = ipFilters[i].compare;
    Com_sprintf( iplist + strlen(iplist), sizeof(iplist) - strlen(iplist),
      "%i.%i.%i.%i ", b[0], b[1], b[2], b[3]);
  }

  trap_Cvar_Set( "g_banIPs", iplist );
}

/*
=================
G_FilterPacket
=================
*/
qboolean G_FilterPacket (char *from)
{
  int   i;
  unsigned  in;
  byte m[4];
  char *p;

  i = 0;
  p = from;
  while (*p && i < 4) {
    m[i] = 0;
    while (*p >= '0' && *p <= '9') {
      m[i] = m[i]*10 + (*p - '0');
      p++;
    }
    if (!*p || *p == ':')
      break;
    i++, p++;
  }

  in = *(unsigned *)m;

  for (i=0 ; i<numIPFilters ; i++)
    if ( (in & ipFilters[i].mask) == ipFilters[i].compare)
      return g_filterBan.integer != 0;

  return g_filterBan.integer == 0;
}

/*
=================
AddIP
=================
*/
static void AddIP( char *str )
{
  int   i;

  for (i = 0 ; i < numIPFilters ; i++)
    if (ipFilters[i].compare == 0xffffffff)
      break;    // free spot
  if (i == numIPFilters)
  {
    if (numIPFilters == MAX_IPFILTERS)
    {
      G_Printf ("IP filter list is full\n");
      return;
    }
    numIPFilters++;
  }

  if (!StringToFilter (str, &ipFilters[i]))
    ipFilters[i].compare = 0xffffffffu;

  UpdateIPBans();
}

/*
=================
G_ProcessIPBans
=================
*/
void G_ProcessIPBans(void)
{
  char *s, *t;
  char    str[MAX_TOKEN_CHARS];

  Q_strncpyz( str, g_banIPs.string, sizeof(str) );

  for (t = s = g_banIPs.string; *t; /* */ ) {
    s = strchr(s, ' ');
    if (!s)
      break;
    while (*s == ' ')
      *s++ = 0;
    if (*t)
      AddIP( t );
    t = s;
  }
}


/*
=================
Svcmd_AddIP_f
=================
*/
void Svcmd_AddIP_f (void)
{
  char    str[MAX_TOKEN_CHARS];

  if ( trap_Argc() < 2 ) {
    G_Printf("Usage:  addip <ip-mask>\n");
    return;
  }

  trap_Argv( 1, str, sizeof( str ) );

  AddIP( str );

}

/*
=================
Svcmd_RemoveIP_f
=================
*/
void Svcmd_RemoveIP_f (void)
{
  ipFilter_t  f;
  int     i;
  char    str[MAX_TOKEN_CHARS];

  if ( trap_Argc() < 2 ) {
    G_Printf("Usage:  sv removeip <ip-mask>\n");
    return;
  }

  trap_Argv( 1, str, sizeof( str ) );

  if (!StringToFilter (str, &f))
    return;

  for (i=0 ; i<numIPFilters ; i++) {
    if (ipFilters[i].mask == f.mask &&
      ipFilters[i].compare == f.compare) {
      ipFilters[i].compare = 0xffffffffu;
      G_Printf ("Removed.\n");

      UpdateIPBans();
      return;
    }
  }

  G_Printf ( "Didn't find %s.\n", str );
}

/*
===================
Svcmd_EntityList_f
===================
*/
void  Svcmd_EntityList_f (void) {
  int     e;
  gentity_t   *check;

  check = g_entities+1;
  for (e = 1; e < level.num_entities ; e++, check++) {
    if ( !check->inuse ) {
      continue;
    }
    G_Printf("%3i:", e);
    switch ( check->s.eType ) {
    case ET_GENERAL:
      G_Printf("ET_GENERAL          ");
      break;
    case ET_PLAYER:
      G_Printf("ET_PLAYER           ");
      break;
    case ET_ITEM:
      G_Printf("ET_ITEM             ");
      break;
    case ET_BUILDABLE:
      G_Printf("ET_BUILDABLE        ");
      break;
    case ET_MISSILE:
      G_Printf("ET_MISSILE          ");
      break;
    case ET_MOVER:
      G_Printf("ET_MOVER            ");
      break;
    case ET_BEAM:
      G_Printf("ET_BEAM             ");
      break;
    case ET_PORTAL:
      G_Printf("ET_PORTAL           ");
      break;
    case ET_SPEAKER:
      G_Printf("ET_SPEAKER          ");
      break;
    case ET_PUSH_TRIGGER:
      G_Printf("ET_PUSH_TRIGGER     ");
      break;
    case ET_TELEPORT_TRIGGER:
      G_Printf("ET_TELEPORT_TRIGGER ");
      break;
    case ET_INVISIBLE:
      G_Printf("ET_INVISIBLE        ");
      break;
    case ET_GRAPPLE:
      G_Printf("ET_GRAPPLE          ");
      break;
    default:
      G_Printf("%3i                 ", check->s.eType);
      break;
    }

    if ( check->classname ) {
      G_Printf("%s", check->classname);
    }
    G_Printf("\n");
  }
}

gclient_t *ClientForString( const char *s ) {
  gclient_t *cl;
  int     i;
  int     idnum;

  // numeric values are just slot numbers
  if ( s[0] >= '0' && s[0] <= '9' ) {
    idnum = atoi( s );
    if ( idnum < 0 || idnum >= level.maxclients ) {
      Com_Printf( "Bad client slot: %i\n", idnum );
      return NULL;
    }

    cl = &level.clients[idnum];
    if ( cl->pers.connected == CON_DISCONNECTED ) {
      G_Printf( "Client %i is not connected\n", idnum );
      return NULL;
    }
    return cl;
  }

  // check for a name match
  for ( i=0 ; i < level.maxclients ; i++ ) {
    cl = &level.clients[i];
    if ( cl->pers.connected == CON_DISCONNECTED ) {
      continue;
    }
    if ( !Q_stricmp( cl->pers.netname, s ) ) {
      return cl;
    }
  }

  G_Printf( "User %s is not on the server\n", s );

  return NULL;
}

/*
===================
Svcmd_ForceTeam_f

forceteam <player> <team>
===================
*/
void  Svcmd_ForceTeam_f( void ) {
  gclient_t *cl;
  char    str[MAX_TOKEN_CHARS];

  // find the player
  trap_Argv( 1, str, sizeof( str ) );
  cl = ClientForString( str );
  if ( !cl ) {
    return;
  }

  // set the team
  trap_Argv( 2, str, sizeof( str ) );
  SetTeam( &g_entities[cl - level.clients], str );
}

char  *ConcatArgs( int start );

/*
=================
ConsoleCommand

=================
*/
qboolean  ConsoleCommand( void ) {
  char  cmd[MAX_TOKEN_CHARS];

  trap_Argv( 0, cmd, sizeof( cmd ) );

  if ( Q_stricmp (cmd, "entitylist") == 0 ) {
    Svcmd_EntityList_f();
    return qtrue;
  }

  if ( Q_stricmp (cmd, "forceteam") == 0 ) {
    Svcmd_ForceTeam_f();
    return qtrue;
  }

  if (Q_stricmp (cmd, "game_memory") == 0) {
    Svcmd_GameMem_f();
    return qtrue;
  }

  //TA: rip bots
  /*if (Q_stricmp (cmd, "addbot") == 0) {
    Svcmd_AddBot_f();
    return qtrue;
  }

  if (Q_stricmp (cmd, "botlist") == 0) {
    Svcmd_BotList_f();
    return qtrue;
  }*/

  if (Q_stricmp (cmd, "abort_podium") == 0) {
    Svcmd_AbortPodium_f();
    return qtrue;
  }

  if (Q_stricmp (cmd, "addip") == 0) {
    Svcmd_AddIP_f();
    return qtrue;
  }

  if (Q_stricmp (cmd, "removeip") == 0) {
    Svcmd_RemoveIP_f();
    return qtrue;
  }

  if (Q_stricmp (cmd, "listip") == 0) {
    trap_SendConsoleCommand( EXEC_NOW, "g_banIPs\n" );
    return qtrue;
  }

  if (g_dedicated.integer) {
    if (Q_stricmp (cmd, "say") == 0) {
      trap_SendServerCommand( -1, va("print \"server: %s\"", ConcatArgs(1) ) );
      return qtrue;
    }
    // everything else will also be printed as a say command
    trap_SendServerCommand( -1, va("print \"server: %s\"", ConcatArgs(0) ) );
    return qtrue;
  }
                                        
  return qfalse;
}