Files
fs2open.github.com/code/network/multi_kick.cpp
T
2005-07-13 03:26:00 +00:00

403 lines
12 KiB
C++

/*
* Copyright (C) Volition, Inc. 1999. All rights reserved.
*
* All source code herein is the property of Volition, Inc. You may not sell
* or otherwise commercially exploit the source or things you created based on the
* source.
*
*/
/*
* $Logfile: /Freespace2/code/Network/multi_kick.cpp $
* $Revision: 2.7 $
* $Date: 2005-07-13 03:25:59 $
* $Author: Goober5000 $
*
* $Log: not supported by cvs2svn $
* Revision 2.6 2005/03/02 21:18:19 taylor
* better support for Inferno builds (in PreProcDefines.h now, no networking support)
* make sure NO_NETWORK builds are as friendly on Windows as it is on Linux/OSX
* revert a timeout in Client.h back to the original value before Linux merge
*
* Revision 2.5 2005/02/04 10:12:31 taylor
* merge with Linux/OSX tree - p0204
*
* Revision 2.4 2004/07/26 20:47:42 Kazan
* remove MCD complete
*
* Revision 2.3 2004/07/12 16:32:57 Kazan
* MCD - define _MCD_CHECK to use memory tracking
*
* Revision 2.2 2004/03/05 09:02:02 Goober5000
* Uber pass at reducing #includes
* --Goober5000
*
* Revision 2.1 2002/08/01 01:41:07 penguin
* The big include file move
*
* Revision 2.0 2002/06/03 04:02:26 penguin
* Warpcore CVS sync
*
* Revision 1.1 2002/05/02 18:03:11 mharris
* Initial checkin - converted filenames and includes to lower case
*
*
* 8 10/13/99 3:51p Jefff
* fixed unnumbered XSTRs
*
* 7 3/10/99 6:50p Dave
* Changed the way we buffer packets for all clients. Optimized turret
* fired packets. Did some weapon firing optimizations.
*
* 6 3/09/99 6:24p Dave
* More work on object update revamping. Identified several sources of
* unnecessary bandwidth.
*
* 5 11/19/98 8:03a Dave
* Full support for D3-style reliable sockets. Revamped packet lag/loss
* system, made it receiver side and at the lowest possible level.
*
* 4 11/17/98 11:12a Dave
* Removed player identification by address. Now assign explicit id #'s.
*
* 3 11/05/98 5:55p Dave
* Big pass at reducing #includes
*
* 2 10/07/98 10:53a Dave
* Initial checkin.
*
* 1 10/07/98 10:50a Dave
*
* 16 9/15/98 7:24p Dave
* Minor UI changes. Localized bunch of new text.
*
* 15 9/11/98 5:53p Dave
* Final revisions to kick system changes.
*
* 14 9/11/98 5:08p Dave
* More tweaks to kick notification system.
*
* 13 9/11/98 4:14p Dave
* Fixed file checksumming of < file_size. Put in more verbose kicking and
* PXO stats store reporting.
*
* 12 6/13/98 9:32p Mike
* Kill last character in file which caused "Find in Files" to report the
* file as "not a text file."
*
* 11 6/13/98 6:01p Hoffoss
* Externalized all new (or forgot to be added) strings to all the code.
*
* 10 4/23/98 6:18p Dave
* Store ETS values between respawns. Put kick feature in the text
* messaging system. Fixed text messaging system so that it doesn't
* process or trigger ship controls. Other UI fixes.
*
* 9 4/04/98 4:22p Dave
* First rev of UDP reliable sockets is done. Seems to work well if not
* overly burdened.
*
* 8 4/03/98 1:03a Dave
* First pass at unreliable guaranteed delivery packets.
*
* 7 4/01/98 11:19p Dave
* Put in auto-loading of xferred pilot pic files. Grey out background
* behind pinfo popup. Put a chatbox message in when players are kicked.
* Moved mission title down in briefing. Other ui fixes.
*
* 6 3/30/98 6:27p Dave
* Put in a more official set of multiplayer options, including a system
* for distributing netplayer and netgame settings.
*
* 5 3/24/98 5:00p Dave
* Fixed several ui bugs. Put in pre and post voice stream playback sound
* fx. Put in error specific popups for clients getting dropped from games
* through actions other than their own.
*
* 4 3/18/98 5:52p Dave
* Put in netgame password popup. Numerous ui changes. Laid groundwork for
* streamed multi_voice data.
*
* 3 3/17/98 5:29p Dave
* Minor bug fixes in player select menu. Solidified mp joining process.
* Made furball mode support ingame joiners and dropped players correctly.
*
* 2 3/15/98 4:17p Dave
* Fixed oberver hud problems. Put in handy netplayer macros. Reduced size
* of network orientation matrices.
*
* 1 2/12/98 4:38p Dave
* Multiplayer kick functionality
*
* $NoKeywords: $
*/
#ifndef NO_NETWORK
#include "globalincs/pstypes.h"
#include "network/multi.h"
#include "network/multi_kick.h"
#include "network/multimsgs.h"
#include "network/multiutil.h"
#include "freespace2/freespace.h"
#include "playerman/player.h"
#include "io/timer.h"
// ----------------------------------------------------------------------------------
// KICK DEFINES/VARS
//
#define MULTI_KICK_RESPONSE_TIME 4000 // if someone who has been kicked has not responded in this time, disconnect him hard
#define MAX_BAN_SLOTS 30
net_addr Multi_kick_ban_slots[MAX_BAN_SLOTS]; // banned addresses
int Multi_kick_num_ban_slots; // the # of banned addresses
// ----------------------------------------------------------------------------------
// KICK FORWARD DECLARATIONS
//
// send a player kick packet
void send_player_kick_packet(int player_index, int ban = 1, int reason = KICK_REASON_NORM);
// process a player kick packet
void process_player_kick_packet(ubyte *data, header *hinfo);
// add a net address to the banned list
void multi_kick_add_ban(net_addr *addr);
// can the given player perform a kick
int multi_kick_can_kick(net_player *player);
// ----------------------------------------------------------------------------------
// KICK FUNCTIONS
//
// initialize all kicking details (ban lists, etc). it is safe to call this function at any time
void multi_kick_init()
{
// blast all the ban slots
memset(Multi_kick_ban_slots,0,sizeof(net_addr)*MAX_BAN_SLOTS);
Multi_kick_num_ban_slots = 0;
}
// process all kick details (disconnecting players who have been kicked but haven't closed their socket)
void multi_kick_process()
{
int idx;
// if i'm not the server, don't do anything
if(!(Net_player->flags & NETINFO_FLAG_AM_MASTER)){
return;
}
// disconnect any kicked players who have timed out on leaving
for(idx=0;idx<MAX_PLAYERS;idx++){
if(MULTI_CONNECTED(Net_players[idx]) && (Net_players[idx].s_info.kick_timestamp != -1) && timestamp_elapsed(Net_players[idx].s_info.kick_timestamp) ){
delete_player(idx, Net_players[idx].s_info.kick_reason);
}
}
}
// attempt to kick a player. return success or fail
void multi_kick_player(int player_index, int ban, int reason)
{
// only the standalone should be able to kick the host of the game
if(!(Game_mode & GM_STANDALONE_SERVER) && ((Net_players[player_index].flags & NETINFO_FLAG_GAME_HOST) || (Net_players[player_index].flags & NETINFO_FLAG_AM_MASTER))){
nprintf(("Network","Cannot kick the host or server of a game!\n"));
} else {
// if we're the master, then delete the guy
if(Net_player->flags & NETINFO_FLAG_AM_MASTER){
// if we're supposed to ban him, add his address to the banned list
if(ban){
multi_kick_add_ban(&Net_players[player_index].p_info.addr);
}
// mark him as having been kicked
Net_players[player_index].flags |= NETINFO_FLAG_KICKED;
// set his kick timestamp and send him a leave game packet
Net_players[player_index].s_info.kick_timestamp = timestamp(MULTI_KICK_RESPONSE_TIME);
Net_players[player_index].s_info.kick_reason = reason;
send_leave_game_packet(Net_players[player_index].player_id, reason, &Net_players[player_index]);
// tell everyone else that he was kicked
send_leave_game_packet(Net_players[player_index].player_id, reason);
// wait until he either shuts his connection down or he times out)
// add the string to the chatbox and the hud (always safe - if it is not inited, nothing bad will happen)
char str[512];
memset(str, 0, 512);
sprintf(str, XSTR("<kicking %s ...>", 1501), Net_players[player_index].m_player->callsign);
multi_display_chat_msg(str, player_index, 0);
}
// otherwise, we should send the packet indicating that this guy should be kicked
else {
send_player_kick_packet(player_index, ban, reason);
}
}
}
// is this net address currently kicked and banded
int multi_kick_is_banned(net_addr *addr)
{
int idx;
// traverse the banned list
for(idx=0;idx<Multi_kick_num_ban_slots;idx++){
// if we found a duplicate
if(psnet_same(&Multi_kick_ban_slots[idx],addr)){
return 1;
}
}
// he's not banned
return 0;
}
// debug console function called to determine which player to kick
void multi_dcf_kick()
{
int player_num,idx;
// get the callsign of the player to kick
dc_get_arg(ARG_STRING);
if(strlen(Dc_arg) == 0){
dc_printf("Invalid player callsign!\n");
return ;
}
player_num = -1;
for(idx=0;idx<MAX_PLAYERS;idx++){
if(MULTI_CONNECTED(Net_players[idx]) && (stricmp(Net_players[idx].m_player->callsign,Dc_arg)==0)){
player_num = idx;
break;
}
}
// if we didn't find the player, notify of the results
if(player_num == -1){
dc_printf("Could not find player %s to kick!",Dc_arg);
}
// if we found the guy, then try and kick him
else {
multi_kick_player(player_num);
}
}
// fill in the passed string with the appropriate "kicked" string
void multi_kick_get_text(net_player *pl, int reason, char *str)
{
// safety net
if((pl == NULL) || (pl->m_player == NULL)){
strcpy(str, NOX(""));
}
switch(reason){
case KICK_REASON_BAD_XFER:
sprintf(str, XSTR("<%s was kicked because of mission file xfer failure>", 1003), pl->m_player->callsign);
break;
case KICK_REASON_CANT_XFER:
sprintf(str, XSTR("<%s was kicked for not having builtin mission %s>", 1004), pl->m_player->callsign, Game_current_mission_filename);
break;
case KICK_REASON_INGAME_ENDED:
sprintf(str, XSTR("<%s was kicked for ingame joining an ended game>",1005), pl->m_player->callsign);
break;
default:
sprintf(str, XSTR("<%s was kicked>",687), pl->m_player->callsign);
break;
}
}
// ----------------------------------------------------------------------------------
// KICK FORWARD DEFINITIONS
//
// add a net address to the banned list
void multi_kick_add_ban(net_addr *addr)
{
// if we still have any slots left
if(Multi_kick_num_ban_slots < (MAX_BAN_SLOTS - 1)){
memcpy(&Multi_kick_ban_slots[Multi_kick_num_ban_slots++],addr,sizeof(net_addr));
}
}
// ----------------------------------------------------------------------------------
// KICK PACKET HANDLERS
//
// send a player kick packet
void send_player_kick_packet(int player_index, int ban, int reason)
{
ubyte data[MAX_PACKET_SIZE];
int packet_size = 0;
BUILD_HEADER(KICK_PLAYER);
// add the address of the player to be kicked
ADD_SHORT(Net_players[player_index].player_id);
// indicate if he should be banned
ADD_INT(ban);
ADD_INT(reason);
// send the request to the server
multi_io_send_reliable(Net_player, data, packet_size);
}
// process a player kick packet
void process_player_kick_packet(ubyte *data, header *hinfo)
{
int player_num,from_player,ban,reason;
short player_id;
int offset = HEADER_LENGTH;
// get the address of the guy who is to be kicked
GET_SHORT(player_id);
GET_INT(ban);
GET_INT(reason);
player_num = find_player_id(player_id);
PACKET_SET_SIZE();
// only the server should ever receive a request to kick a guy
Assert(Net_player->flags & NETINFO_FLAG_AM_MASTER);
// determine who sent the packet
from_player = find_player_id(hinfo->id);
// check to see if this guy is allowed to make such a request
if((from_player == -1) || !multi_kick_can_kick(&Net_players[from_player]) ){
nprintf(("Network","Received a kick request from an invalid player!!\n"));
}
// otherwise, process the request fully
else {
// make sure we have a valid player to kick
if(player_num == -1){
nprintf(("Network","Received request to kick an unknown player!\n"));
} else {
// will handle all the rest of the details
multi_kick_player(player_num,ban,reason);
}
}
}
// can the given player perform a kick
int multi_kick_can_kick(net_player *player)
{
// only host or server can kick
if((player->flags & NETINFO_FLAG_AM_MASTER) || (player->flags & NETINFO_FLAG_GAME_HOST)){
return 1;
}
// this guy cannot kick
return 0;
}
#endif // !NO_NETWORK