/*
==================
SV_Configstrings_f
==================
*/
void SV_Configstrings_f (void)
{
int startPos, start;
int maxLen; // Knightmare added
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;
}
// Knightmare- use sv_baselines_maxlen for proper bounding in multiplayer
maxLen = SV_SetMaxBaselinesSize();
// start = atoi(Cmd_Argv(2));
startPos = atoi(Cmd_Argv(2));
if (startPos < 0) // r1ch's fix for negative index
{
Com_Printf ("Illegal configstrings request (negative index) from %s[%s], dropping client\n", sv_client->name, NET_AdrToString(sv_client->netchan.remote_address));
SV_DropClient (sv_client);
return;
}
start = startPos;
// write a packet full of data
// Knightmare- use maxLen for proper bounding
// while ( sv_client->netchan.message.cursize < MAX_MSGLEN/2 && start < MAX_CONFIGSTRINGS)
while ( sv_client->netchan.message.cursize < maxLen && 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_UserMove
The message usually contains all the movement commands
that were in the last three packets, so that the information
in dropped packets can be recovered.
On very fast clients, there may be multiple usercmd packed into
each of the backup packets.
==================
*/
static void SV_UserMove( client_t *cl, msg_t *msg, qboolean delta ) {
int i, key;
int cmdCount;
usercmd_t nullcmd;
usercmd_t cmds[MAX_PACKET_USERCMDS];
usercmd_t *cmd, *oldcmd;
if ( delta ) {
cl->deltaMessage = cl->messageAcknowledge;
} else {
cl->deltaMessage = -1;
}
cmdCount = MSG_ReadByte( msg );
if ( cmdCount < 1 ) {
Com_Printf( "cmdCount < 1\n" );
return;
}
if ( cmdCount > MAX_PACKET_USERCMDS ) {
Com_Printf( "cmdCount > MAX_PACKET_USERCMDS\n" );
return;
}
// use the checksum feed in the key
key = sv.checksumFeed;
// also use the message acknowledge
key ^= cl->messageAcknowledge;
// also use the last acknowledged server command in the key
key ^= Com_HashKey(cl->reliableCommands[ cl->reliableAcknowledge & (MAX_RELIABLE_COMMANDS-1) ], 32);
Com_Memset( &nullcmd, 0, sizeof(nullcmd) );
oldcmd = &nullcmd;
for ( i = 0 ; i < cmdCount ; i++ ) {
cmd = &cmds[i];
MSG_ReadDeltaUsercmdKey( msg, key, oldcmd, cmd );
oldcmd = cmd;
}
// save time for ping calculation
cl->frames[ cl->messageAcknowledge & PACKET_MASK ].messageAcked = svs.time;
// if this is the first usercmd we have received
// this gamestate, put the client into the world
if ( cl->state == CS_PRIMED ) {
SV_ClientEnterWorld( cl, &cmds[0] );
// the moves can be processed normaly
}
//
if (sv_pure->integer != 0 && cl->pureAuthentic == 0) {
SV_DropClient( cl, "Cannot validate pure client!");
return;
}
if ( cl->state != CS_ACTIVE ) {
cl->deltaMessage = -1;
return;
}
// usually, the first couple commands will be duplicates
// of ones we have previously received, but the servertimes
// in the commands will cause them to be immediately discarded
for ( i = 0 ; i < cmdCount ; i++ ) {
// if this is a cmd from before a map_restart ignore it
if ( cmds[i].serverTime > cmds[cmdCount-1].serverTime ) {
continue;
}
// extremely lagged or cmd from before a map_restart
//if ( cmds[i].serverTime > svs.time + 3000 ) {
// continue;
//}
// don't execute if this is an old cmd which is already executed
// these old cmds are included when cl_packetdup > 0
if ( cmds[i].serverTime <= cl->lastUsercmd.serverTime ) {
continue;
}
SV_ClientThink (cl, &cmds[ i ]);
}
}
/*
=================
SV_Disconnect_f
The client is going to disconnect, so remove the connection immediately FIXME: move to game?
=================
*/
static void SV_Disconnect_f( client_t *cl ) {
SV_DropClient( cl, "disconnected" );
}
/*
==================
Host_ShutdownServer
This only happens at the end of a game, not between levels
==================
*/
void Host_ShutdownServer(qboolean crash)
{
int i;
int count;
sizebuf_t buf;
char message[4];
double start;
if (!sv.active)
return;
sv.active = false;
// stop all client sounds immediately
if (cls.state == ca_connected)
CL_Disconnect ();
// flush any pending messages - like the score!!!
start = Sys_FloatTime();
do
{
count = 0;
for (i=0, host_client = svs.clients ; i<svs.maxclients ; i++, host_client++)
{
if (host_client->active && host_client->message.cursize)
{
if (NET_CanSendMessage (host_client->netconnection))
{
NET_SendMessage(host_client->netconnection, &host_client->message);
SZ_Clear (&host_client->message);
}
else
{
NET_GetMessage(host_client->netconnection);
count++;
}
}
}
if ((Sys_FloatTime() - start) > 3.0)
break;
}
while (count);
// make sure all the clients know we're disconnecting
buf.data = message;
buf.maxsize = 4;
buf.cursize = 0;
MSG_WriteByte(&buf, svc_disconnect);
count = NET_SendToAll(&buf, 5);
if (count)
Con_Printf("Host_ShutdownServer: NET_SendToAll failed for %u clients\n", count);
for (i=0, host_client = svs.clients ; i<svs.maxclients ; i++, host_client++)
if (host_client->active)
SV_DropClient(crash);
//
// clear structures
//
memset (&sv, 0, sizeof(sv));
memset (svs.clients, 0, svs.maxclientslimit*sizeof(client_t));
}
/*
* SV_Disconnect_f
* The client is going to disconnect, so remove the connection immediately
*/
static void SV_Disconnect_f( client_t *client )
{
SV_DropClient( client, DROP_TYPE_GENERAL, NULL );
}
/*
================
SV_SpawnServer
Change the server to a new map, taking all connected
clients along with it.
This is NOT called for map_restart
================
*/
void SV_SpawnServer( char *server, qboolean killBots ) {
int i;
int checksum;
char systemInfo[16384];
const char *p;
// shut down the existing game if it is running
SV_ShutdownGameProgs();
Com_Printf ("------ Server Initialization ------\n");
Com_Printf ("Server: %s\n",server);
// if not running a dedicated server CL_MapLoading will connect the client to the server
// also print some status stuff
CL_MapLoading();
// make sure all the client stuff is unloaded
CL_ShutdownAll();
// clear the whole hunk because we're (re)loading the server
Hunk_Clear();
#ifndef DEDICATED
// Restart renderer
CL_StartHunkUsers( qtrue );
#endif
// clear collision map data
CM_ClearMap();
// init client structures and svs.numSnapshotEntities
if ( !Cvar_VariableValue("sv_running") ) {
SV_Startup();
} else {
// check for maxclients or democlients change
if ( sv_maxclients->modified || sv_democlients->modified ) {
SV_ChangeMaxClients();
}
}
// clear pak references
FS_ClearPakReferences(0);
// allocate the snapshot entities on the hunk
svs.snapshotEntities = Hunk_Alloc( sizeof(entityState_t)*svs.numSnapshotEntities, h_high );
svs.nextSnapshotEntities = 0;
// toggle the server bit so clients can detect that a
// server has changed
svs.snapFlagServerBit ^= SNAPFLAG_SERVERCOUNT;
for (i=0 ; i<sv_maxclients->integer ; i++) {
// save when the server started for each client already connected
if (svs.clients[i].state >= CS_CONNECTED) {
svs.clients[i].oldServerTime = sv.time;
}
}
// wipe the entire per-level structure
SV_ClearServer();
for ( i = 0 ; i < MAX_CONFIGSTRINGS ; i++ ) {
sv.configstrings[i] = CopyString("");
}
// make sure we are not paused
Cvar_Set("cl_paused", "0");
// get a new checksum feed and restart the file system
sv.checksumFeed = ( ((int) rand() << 16) ^ rand() ) ^ Com_Milliseconds();
FS_Restart( sv.checksumFeed );
CM_LoadMap( va("maps/%s.bsp", server), qfalse, &checksum );
// set serverinfo visible name
Cvar_Set( "mapname", server );
Cvar_Set( "sv_mapChecksum", va("%i",checksum) );
// serverid should be different each time
sv.serverId = com_frameTime;
sv.restartedServerId = sv.serverId; // I suppose the init here is just to be safe
sv.checksumFeedServerId = sv.serverId;
Cvar_Set( "sv_serverid", va("%i", sv.serverId ) );
// clear physics interaction links
SV_ClearWorld ();
// media configstring setting should be done during
// the loading stage, so connected clients don't have
// to load during actual gameplay
sv.state = SS_LOADING;
// load and spawn all other entities
SV_InitGameProgs();
// run a few frames to allow everything to settle
for (i = 0;i < 3; i++)
{
VM_Call (gvm, GAME_RUN_FRAME, sv.time);
sv.time += 100;
svs.time += 100;
}
// create a baseline for more efficient communications
SV_CreateBaseline ();
for (i=0 ; i<sv_maxclients->integer ; i++) {
// send the new gamestate to all connected clients
if (svs.clients[i].state >= CS_CONNECTED) {
char *denied;
// connect the client again
denied = VM_ExplicitArgPtr( gvm, VM_Call( gvm, GAME_CLIENT_CONNECT, i, qfalse ) ); // firstTime = qfalse
if ( denied ) {
// this generally shouldn't happen, because the client
// was connected before the level change
SV_DropClient( &svs.clients[i], denied );
} else {
// when we get the next packet from a connected client,
// the new gamestate will be sent
svs.clients[i].state = CS_CONNECTED;
}
}
}
// run another frame to allow things to look at all the players
VM_Call (gvm, GAME_RUN_FRAME, sv.time);
sv.time += 100;
svs.time += 100;
// if a dedicated server we need to touch the cgame because it could be in a
// seperate pk3 file and the client will need to load the latest cgame.qvm
if ( com_dedicated->integer ) {
SV_TouchCGame();
}
// the server sends these to the clients so they will only
// load pk3s also loaded at the server
Cvar_Set( "sv_paks", sv_pure->integer ? FS_LoadedPakChecksums() : "" );
Cvar_Set( "sv_pakNames", sv_pure->integer ? FS_LoadedPakNames() : "" );
// the server sends these to the clients so they can figure
// out which pk3s should be auto-downloaded
p = FS_ReferencedPakChecksums();
Cvar_Set( "sv_referencedPaks", p );
p = FS_ReferencedPakNames();
Cvar_Set( "sv_referencedPakNames", p );
// save systeminfo and serverinfo strings
Q_strncpyz( systemInfo, Cvar_InfoString_Big( CVAR_SYSTEMINFO ), sizeof( systemInfo ) );
cvar_modifiedFlags &= ~CVAR_SYSTEMINFO;
SV_SetConfigstring( CS_SYSTEMINFO, systemInfo );
SV_SetConfigstring( CS_SERVERINFO, Cvar_InfoString( CVAR_SERVERINFO ) );
cvar_modifiedFlags &= ~CVAR_SERVERINFO;
// any media configstring setting now should issue a warning
// and any configstring changes should be reliably transmitted
// to all clients
sv.state = SS_GAME;
// send a heartbeat now so the master will get up to date info
SV_Heartbeat_f();
Hunk_SetMark();
Com_Printf ("-----------------------------------\n");
// start recording a demo
if ( sv_autoDemo->integer ) {
qtime_t now;
Com_RealTime( &now );
Cbuf_AddText( va( "demo_record %04d%02d%02d%02d%02d%02d-%s\n",
1900 + now.tm_year,
1 + now.tm_mon,
now.tm_mday,
now.tm_hour,
now.tm_min,
now.tm_sec,
server ) );
}
}
// Change the server to a new map, taking all connected clients along with it.
// This is NOT called for map_restart
void SV_SpawnServer( char *server, qboolean killBots ) {
int i;
int checksum;
qboolean isBot;
char systemInfo[16384];
const char *p;
// shut down the existing game if it is running
SV_ShutdownGameProgs();
svs.gameStarted = qfalse;
Com_Printf ("------ Server Initialization ------\n");
Com_Printf ("Server: %s\n",server);
// if not running a dedicated server CL_MapLoading will connect the client to the server
// also print some status stuff
CL_MapLoading();
// make sure all the client stuff is unloaded
CL_ShutdownAll(qfalse);
// clear the whole hunk because we're (re)loading the server
Hunk_Clear();
#ifndef DEDICATED
// Restart renderer
CL_StartHunkUsers( qtrue );
#endif
// clear collision map data
CM_ClearMap();
// init client structures and svs.numSnapshotEntities
if ( !Cvar_VariableValue("sv_running") ) {
SV_Startup();
} else {
// check for maxclients change
if ( sv_maxclients->modified ) {
SV_ChangeMaxClients();
}
}
// clear pak references
FS_ClearPakReferences(0);
// allocate the snapshot entities on the hunk
svs.snapshotEntities = Hunk_Alloc( sizeof(entityState_t)*svs.numSnapshotEntities, PREF_HIGH );
svs.nextSnapshotEntities = 0;
// toggle the server bit so clients can detect that a
// server has changed
svs.snapFlagServerBit ^= SNAPFLAG_SERVERCOUNT;
// set nextmap to the same map, but it may be overriden
// by the game startup or another console command
Cvar_Set( "nextmap", "map_restart 0");
// Cvar_Set( "nextmap", va("map %s", server) );
for (i=0 ; i<sv_maxclients->integer ; i++) {
// save when the server started for each client already connected
if (svs.clients[i].state >= CS_CONNECTED) {
svs.clients[i].oldServerTime = sv.time;
}
}
// wipe the entire per-level structure
SV_ClearServer();
for ( i = 0 ; i < MAX_CONFIGSTRINGS ; i++ ) {
sv.configstrings[i] = CopyString("");
}
// make sure we are not paused
Cvar_Set("cl_paused", "0");
// get a new checksum feed and restart the file system
sv.checksumFeed = ( ((int) rand() << 16) ^ rand() ) ^ Com_Milliseconds();
FS_Restart( sv.checksumFeed );
CM_LoadMap( va("maps/%s.bsp", server), qfalse, &checksum );
// set serverinfo visible name
Cvar_Set( "mapname", server );
Cvar_Set( "sv_mapChecksum", va("%i",checksum) );
// serverid should be different each time
sv.serverId = com_frameTime;
sv.restartedServerId = sv.serverId; // I suppose the init here is just to be safe
sv.checksumFeedServerId = sv.serverId;
Cvar_Set( "sv_serverid", va("%i", sv.serverId ) );
// clear physics interaction links
SV_ClearWorld();
// media configstring setting should be done during
// the loading stage, so connected clients don't have
// to load during actual gameplay
sv.state = SS_LOADING;
// load and spawn all other entities
SV_InitGameProgs();
// don't allow a map_restart if game is modified
sv_gametype->modified = qfalse;
// run a few frames to allow everything to settle
for (i = 0;i < 3; i++)
{
game->RunFrame( sv.time );
SV_BotFrame (sv.time);
sv.time += 100;
svs.time += 100;
}
// create a baseline for more efficient communications
SV_CreateBaseline();
for (i=0 ; i<sv_maxclients->integer ; i++) {
// send the new gamestate to all connected clients
if (svs.clients[i].state >= CS_CONNECTED) {
char *denied;
if ( svs.clients[i].netchan.remoteAddress.type == NA_BOT ) {
if ( killBots ) {
SV_DropClient( &svs.clients[i], "" );
continue;
}
isBot = qtrue;
}
else {
isBot = qfalse;
}
// connect the client again
denied = game->ClientConnect( i, qfalse, isBot ); // firstTime = qfalse
if ( denied ) {
// this generally shouldn't happen, because the client
// was connected before the level change
SV_DropClient( &svs.clients[i], denied );
} else {
if( !isBot ) {
// when we get the next packet from a connected client,
// the new gamestate will be sent
svs.clients[i].state = CS_CONNECTED;
}
else {
client_t *client;
sharedEntity_t *ent;
client = &svs.clients[i];
client->state = CS_ACTIVE;
ent = SV_GentityNum( i );
ent->s.number = i;
client->gentity = ent;
client->deltaMessage = -1;
client->lastSnapshotTime = 0; // generate a snapshot immediately
game->ClientBegin( i );
}
}
}
}
// run another frame to allow things to look at all the players
game->RunFrame( sv.time );
SV_BotFrame (sv.time);
sv.time += 100;
svs.time += 100;
if ( sv_pure->integer ) {
// the server sends these to the clients so they will only
// load pk3s also loaded at the server
p = FS_LoadedPakChecksums();
Cvar_Set( "sv_paks", p );
if (strlen(p) == 0) {
Com_Printf( "WARNING: sv_pure set but no PK3 files loaded\n" );
}
p = FS_LoadedPakNames();
Cvar_Set( "sv_pakNames", p );
// if a dedicated pure server we need to touch the cgame because it could be in a
// seperate pk3 file and the client will need to load the latest cgame.qvm
if ( com_dedicated->integer ) {
SV_TouchCGame();
}
}
else {
Cvar_Set( "sv_paks", "" );
Cvar_Set( "sv_pakNames", "" );
}
// the server sends these to the clients so they can figure
// out which pk3s should be auto-downloaded
p = FS_ReferencedPakChecksums();
Cvar_Set( "sv_referencedPaks", p );
p = FS_ReferencedPakNames();
Cvar_Set( "sv_referencedPakNames", p );
// save systeminfo and serverinfo strings
Q_strncpyz( systemInfo, Cvar_InfoString_Big( CVAR_SYSTEMINFO ), sizeof( systemInfo ) );
cvar_modifiedFlags &= ~CVAR_SYSTEMINFO;
SV_SetConfigstring( CS_SYSTEMINFO, systemInfo );
SV_SetConfigstring( CS_SERVERINFO, Cvar_InfoString( CVAR_SERVERINFO ) );
cvar_modifiedFlags &= ~CVAR_SERVERINFO;
// any media configstring setting now should issue a warning
// and any configstring changes should be reliably transmitted
// to all clients
sv.state = SS_GAME;
// send a heartbeat now so the master will get up to date info
SV_Heartbeat_f();
Hunk_SetMark();
Com_Printf ("-----------------------------------\n");
}
P_P_F void Plugin_BanClient( unsigned int clientnum, int duration, int invokerid, char *banreason )
{
client_t *cl;
char* guid;
time_t expire;
char* temp;
time_t aclock;
char endtime[32];
char dropmsg[MAX_STRING_CHARS];
if(clientnum > sv_maxclients->integer)
return;
cl = &svs.clients[clientnum];
time(&aclock);
if(duration == -1)
{
expire = duration;
Q_strncpyz(endtime, "never", sizeof(endtime));
}
else
{
expire = (aclock+(time_t)(duration*60));
temp = ctime(&expire);
temp[strlen(temp)-1] = 0;
Q_strncpyz(endtime, temp, sizeof(endtime));
}
if(strlen(cl->pbguid) == 32)
{
guid = &cl->pbguid[24];
}
else if(cl->uid < 1)
{
Com_Printf("Error: This player has no valid ID and got banned by IP only\n");
SV_DropClient(cl, "Invalid ID\n");
SV_PlayerAddBanByip(&cl->netchan.remoteAddress, "INVALID USER", 0, "INVALID", 0, expire);
return;
}
if(banreason == NULL)
{
banreason = "N/A";
}
SV_AddBan(cl->uid, invokerid, guid, cl->name, expire, banreason);
if( cl->uid > 0 )
{
Com_Printf( "Banrecord added for player: %s uid: %i\n", cl->name, cl->uid);
SV_PrintAdministrativeLog( "Banned player: %s uid: %i until %s with the following reason: %s", cl->name, cl->uid, endtime, banreason);
Com_sprintf(dropmsg, sizeof(dropmsg), "You have been banned from this server\nYour ban will expire on: %s\nYour UID is: %i Banning admin UID is: %i\nReason for this ban:\n%s",
endtime, cl->uid, invokerid, banreason);
}else{
Com_Printf( "Banrecord added for player: %s guid: %s\n", cl->name, cl->pbguid);
SV_PrintAdministrativeLog( "Banned player: %s guid: %s until %s with the following reason: %s", cl->name, cl->pbguid, endtime, banreason);
Com_sprintf(dropmsg, sizeof(dropmsg), "You have been banned from this server\nYour ban will expire on: %s\nYour GUID is: %s Banning admin UID is: %i\nReason for this ban:\n%s",
endtime, cl->pbguid, invokerid, banreason);
if(cl->authentication < 1)
{
SV_PlayerAddBanByip(&cl->netchan.remoteAddress, banreason, 0, cl->pbguid, 0, expire);
}
}
SV_DropClient(cl, dropmsg);
}
/*
================
SV_MapRestart_f
Completely restarts a level, but doesn't send a new gamestate to the clients.
This allows fair starts with variable load times.
================
*/
static void SV_MapRestart_f( void ) {
int i;
client_t *client;
char *denied;
qboolean isBot;
int delay;
// make sure we aren't restarting twice in the same frame
if ( com_frameTime == sv.serverId ) {
return;
}
// make sure server is running
if ( !com_sv_running->integer ) {
Com_Printf( "Server is not running.\n" );
return;
}
if ( sv.restartTime ) {
return;
}
if (Cmd_Argc() > 1 ) {
delay = atoi( Cmd_Argv(1) );
}
else {
delay = 5;
}
if( delay ) {
sv.restartTime = svs.time + delay * 1000;
SV_SetConfigstring( CS_WARMUP, va("%i", sv.restartTime) );
return;
}
// check for changes in variables that can't just be restarted
// check for maxclients change
if ( sv_maxclients->modified || sv_gametype->modified ) {
char mapname[MAX_QPATH];
Com_Printf( "variable change -- restarting.\n" );
// restart the map the slow way
Q_strncpyz( mapname, Cvar_VariableString( "mapname" ), sizeof( mapname ) );
SV_SpawnServer( mapname, qfalse, eForceReload_NOTHING );
return;
}
// toggle the server bit so clients can detect that a
// map_restart has happened
svs.snapFlagServerBit ^= SNAPFLAG_SERVERCOUNT;
// generate a new serverid
sv.restartedServerId = sv.serverId;
sv.serverId = com_frameTime;
Cvar_Set( "sv_serverid", va("%i", sv.serverId ) );
// reset all the vm data in place without changing memory allocation
// note that we do NOT set sv.state = SS_LOADING, so configstrings that
// had been changed from their default values will generate broadcast updates
sv.state = SS_LOADING;
sv.restarting = qtrue;
SV_RestartGameProgs();
// run a few frames to allow everything to settle
for ( i = 0 ;i < 3 ; i++ ) {
VM_Call( gvm, GAME_RUN_FRAME, svs.time );
svs.time += 100;
}
sv.state = SS_GAME;
sv.restarting = qfalse;
// connect and begin all the clients
for (i=0 ; i<sv_maxclients->integer ; i++) {
client = &svs.clients[i];
// send the new gamestate to all connected clients
if ( client->state < CS_CONNECTED) {
continue;
}
if ( client->netchan.remoteAddress.type == NA_BOT ) {
isBot = qtrue;
} else {
isBot = qfalse;
}
// add the map_restart command
SV_AddServerCommand( client, "map_restart\n" );
// connect the client again, without the firstTime flag
denied = (char *)VM_ExplicitArgPtr( gvm, VM_Call( gvm, GAME_CLIENT_CONNECT, i, qfalse, isBot ) );
if ( denied ) {
// this generally shouldn't happen, because the client
// was connected before the level change
// SV_DropClient( client, denied );
SV_DropClient( client, "@MENUS_LOST_CONNECTION" );
Com_Printf( "SV_MapRestart_f(%d): dropped client %i - denied!\n", delay, i ); // bk010125
continue;
}
client->state = CS_ACTIVE;
SV_ClientEnterWorld( client, &client->lastUsercmd );
}
// run another frame to allow things to look at all the players
VM_Call( gvm, GAME_RUN_FRAME, svs.time );
svs.time += 100;
}
/*
===================
SV_ExecuteClientMessage
The current net_message is parsed for the given client
===================
*/
void SV_ExecuteClientMessage(client_t * cl)
{
enum
{
MAX_STRINGCMDS = 8
};
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;
}
}
}
/* <ee4f8> ../engine/sv_steam3.cpp:190 */
void CSteam3Server::OnGSClientDenyHelper(client_t *cl, EDenyReason eDenyReason, const char *pchOptionalText)
{
switch (eDenyReason)
{
case k_EDenyInvalidVersion:
SV_DropClient(cl, 0, "Client version incompatible with server. \nPlease exit and restart");
break;
case k_EDenyNotLoggedOn:
if (!this->m_bLanOnly)
SV_DropClient(cl, 0, "No Steam logon\n");
break;
case k_EDenyLoggedInElseWhere:
if (!this->m_bLanOnly)
SV_DropClient(cl, 0, "This Steam account is being used in another location\n");
break;
case k_EDenyNoLicense:
SV_DropClient(cl, 0, "This Steam account does not own this game. \nPlease login to the correct Steam account.");
break;
case k_EDenyCheater:
SV_DropClient(cl, 0, "VAC banned from secure server\n");
break;
case k_EDenyUnknownText:
if (pchOptionalText && *pchOptionalText)
SV_DropClient(cl, 0, pchOptionalText);
else
SV_DropClient(cl, 0, "Client dropped by server");
break;
case k_EDenyIncompatibleAnticheat:
SV_DropClient(cl, 0, "You are running an external tool that is incompatible with Secure servers.");
break;
case k_EDenyMemoryCorruption:
SV_DropClient(cl, 0, "Memory corruption detected.");
break;
case k_EDenyIncompatibleSoftware:
SV_DropClient(cl, 0, "You are running software that is not compatible with Secure servers.");
break;
case k_EDenySteamConnectionLost:
if (!this->m_bLanOnly)
SV_DropClient(cl, 0, "Steam connection lost\n");
break;
case k_EDenySteamConnectionError:
if (!this->m_bLanOnly)
SV_DropClient(cl, 0, "Unable to connect to Steam\n");
break;
case k_EDenySteamResponseTimedOut:
SV_DropClient(cl, 0, "Client timed out while answering challenge.\n---> Please make sure that you have opened the appropriate ports on any firewall you are connected behind.\n---> See http://support.steampowered.com for help with firewall configuration.");
break;
case k_EDenySteamValidationStalled:
if (this->m_bLanOnly)
cl->network_userid.m_SteamID = 1;
break;
default:
SV_DropClient(cl, 0, "Client dropped by server");
break;
}
}
/*
=================
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_BeginDownload_f
==================
*/
void SV_BeginDownload_f(void)
{
char *name, *p;
size_t length;
qboolean valid;
// 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
// r1ch fix: name is always filtered for security reasons
StripHighBits (name, 1);
// hacked by zoid to allow more conrol over download
// first off, no .. or global allow check
// r1ch fix: for some ./ references in maps, eg ./textures/map/file
length = strlen(name);
p = name;
while ((p = strstr (p, "./")))
{
memmove (p, p+2, length - (p - name) - 1);
length -= 2;
}
// r1ch fix: block the really nasty ones - \server.cfg will download from mod root on win32, .. is obvious
if (name[0] == '\\' || strstr (name, ".."))
{
Com_Printf ("Refusing illegal download path %s to %s\n", name, sv_client->name);
MSG_WriteByte (&sv_client->netchan.message, svc_download);
MSG_WriteShort (&sv_client->netchan.message, -1);
MSG_WriteByte (&sv_client->netchan.message, 0);
Com_Printf ("Client %s[%s] tried to download illegal path: %s\n", sv_client->name, NET_AdrToString (sv_client->netchan.remote_address), name);
SV_DropClient (sv_client);
return;
}
else if (offset < 0) // r1ch fix: negative offset will crash on read
{
Com_Printf ("Refusing illegal download offset %d to %s\n", offset, sv_client->name);
MSG_WriteByte (&sv_client->netchan.message, svc_download);
MSG_WriteShort (&sv_client->netchan.message, -1);
MSG_WriteByte (&sv_client->netchan.message, 0);
Com_Printf ("Client %s[%s] supplied illegal download offset for %s: %d\n", sv_client->name, NET_AdrToString (sv_client->netchan.remote_address), name, offset);
SV_DropClient (sv_client);
return;
}
else if ( !length || name[0] == 0 // empty name, maybe as result of ./ normalize
|| !IsValidChar(name[0])
// r1ch: \ is bad in general, client won't even write properly if we do sent it
|| strchr (name, '\\')
// MUST be in a subdirectory, unless a pk3
|| (!strstr (name, "/") && strcmp(name+strlen(name)-4, ".pk3"))
// r1ch: another bug, maps/. will fopen(".") -> crash
|| !IsValidChar(name[length-1]) )
/* 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/", 8) == 0 && !allow_download_players->value)
// now models
|| (strncmp(name, "models/", 7) == 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/", 5) == 0 && !allow_download_maps->value)
// MUST be in a subdirectory, unless a pk3
|| (!strstr (name, "/") && strcmp(name+strlen(name)-4, ".pk3")) ) */
{ // 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;
}
valid = true;
if ( !allow_download->value
|| (strncmp(name, "players/", 8) == 0 && !allow_download_players->value)
|| (strncmp(name, "models/", 7) == 0 && !allow_download_models->value)
|| (strncmp(name, "sound/", 6) == 0 && !allow_download_sounds->value)
|| (strncmp(name, "maps/", 5) == 0 && !allow_download_maps->value)
|| (strncmp(name, "pics/", 5) == 0 && !allow_download_pics->value)
|| ( ((strncmp(name, "env/", 4) == 0 || strncmp(name, "textures/", 9) == 0)) && !allow_download_textures->value ) )
valid = false;
if (!valid)
{
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;
// ZOID- special check for maps, if it came from a pak file, don't allow download
if (!sv_client->download || (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_Baselines_f
==================
*/
void SV_Baselines_f (void)
{
int startPos, start;
int maxLen; // Knightmare added
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;
}
// Knightmare- use sv_baselines_maxlen for proper bounding in multiplayer
maxLen = SV_SetMaxBaselinesSize();
// start = atoi(Cmd_Argv(2));
startPos = atoi(Cmd_Argv(2));
if (startPos < 0) // r1ch's fix for negative index
{
Com_Printf ("Illegal baselines request (negative index) from %s[%s], dropping client\n", sv_client->name, NET_AdrToString(sv_client->netchan.remote_address));
SV_DropClient (sv_client);
return;
}
start = startPos;
memset (&nullstate, 0, sizeof(nullstate));
// write a packet full of data
// Knightmare- use maxLen for proper bounding
// while ( sv_client->netchan.message.cursize < MAX_MSGLEN/2 && start < MAX_EDICTS)
while ( sv_client->netchan.message.cursize < maxLen && 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_SpawnServer
Change the server to a new map, taking all connected
clients along with it.
This is NOT called for map_restart
================
*/
void SV_SpawnServer( char *server )
{
int i;
int checksum;
qboolean isBot;
const char *p;
// shut down the existing game if it is running
SV_ShutdownGameProgs();
Com_Printf(_( "------ Server Initialization ------\n" ));
Com_Printf(_( "Server: %s\n"), server );
// if not running a dedicated server CL_MapLoading will connect the client to the server
// also print some status stuff
CL_MapLoading();
// make sure all the client stuff is unloaded
CL_ShutdownAll();
// clear the whole hunk because we're (re)loading the server
Hunk_Clear();
// clear collision map data // (SA) NOTE: TODO: used in missionpack
CM_ClearMap();
// wipe the entire per-level structure
SV_ClearServer();
// MrE: main zone should be pretty much emtpy at this point
// except for file system data and cached renderer data
Z_LogHeap();
// allocate empty config strings
for ( i = 0; i < MAX_CONFIGSTRINGS; i++ )
{
sv.configstrings[ i ] = CopyString( "" );
sv.configstringsmodified[ i ] = qfalse;
}
// init client structures and svs.numSnapshotEntities
if ( !Cvar_VariableValue( "sv_running" ) )
{
SV_Startup();
}
else
{
// check for maxclients change
if ( sv_maxclients->modified )
{
SV_ChangeMaxClients();
}
}
// clear pak references
FS_ClearPakReferences( 0 );
// allocate the snapshot entities on the hunk
svs.snapshotEntities = Hunk_Alloc( sizeof( entityState_t ) * svs.numSnapshotEntities, h_high );
svs.nextSnapshotEntities = 0;
// toggle the server bit so clients can detect that a
// server has changed
svs.snapFlagServerBit ^= SNAPFLAG_SERVERCOUNT;
// set sv_nextmap to the same map, but it may be overridden
// by the game startup or another console command
Cvar_Set( "sv_nextmap", "map_restart 0" );
// Cvar_Set( "sv_nextmap", va("map %s", server) );
SV_SetExpectedHunkUsage( va( "maps/%s.bsp", server ) );
// make sure we are not paused
Cvar_Set( "cl_paused", "0" );
#if !defined( DO_LIGHT_DEDICATED )
// get a new checksum feed and restart the file system
srand( Sys_Milliseconds() );
sv.checksumFeed = ( ( ( int ) rand() << 16 ) ^ rand() ) ^ Sys_Milliseconds();
// DO_LIGHT_DEDICATED
// only comment out when you need a new pure checksum string and its associated random feed
//Com_DPrintf("SV_SpawnServer checksum feed: %p\n", sv.checksumFeed);
#else // DO_LIGHT_DEDICATED implementation below
// we are not able to randomize the checksum feed since the feed is used as key for pure_checksum computations
// files.c 1776 : pack->pure_checksum = Com_BlockChecksumKey( fs_headerLongs, 4 * fs_numHeaderLongs, LittleLong(fs_checksumFeed) );
// we request a fake randomized feed, files.c knows the answer
srand( Sys_Milliseconds() );
sv.checksumFeed = FS_RandChecksumFeed();
#endif
FS_Restart( sv.checksumFeed );
CM_LoadMap( va( "maps/%s.bsp", server ), qfalse, &checksum );
// set serverinfo visible name
Cvar_Set( "mapname", server );
Cvar_Set( "sv_mapChecksum", va( "%i", checksum ) );
sv_newGameShlib = Cvar_Get( "sv_newGameShlib", "", CVAR_TEMP );
// serverid should be different each time
sv.serverId = com_frameTime;
sv.restartedServerId = sv.serverId;
sv.checksumFeedServerId = sv.serverId;
Cvar_Set( "sv_serverid", va( "%i", sv.serverId ) );
// clear physics interaction links
SV_ClearWorld();
// media configstring setting should be done during
// the loading stage, so connected clients don't have
// to load during actual gameplay
sv.state = SS_LOADING;
Cvar_Set( "sv_serverRestarting", "1" );
// load and spawn all other entities
SV_InitGameProgs();
// run a few frames to allow everything to settle
for ( i = 0; i < GAME_INIT_FRAMES; i++ )
{
VM_Call( gvm, GAME_RUN_FRAME, svs.time );
SV_BotFrame( svs.time );
svs.time += FRAMETIME;
}
// create a baseline for more efficient communications
SV_CreateBaseline();
for ( i = 0; i < sv_maxclients->integer; i++ )
{
// send the new gamestate to all connected clients
if ( svs.clients[ i ].state >= CS_CONNECTED )
{
char *denied;
if ( svs.clients[ i ].netchan.remoteAddress.type == NA_BOT )
{
isBot = qtrue;
}
else
{
isBot = qfalse;
}
// connect the client again
denied = VM_ExplicitArgPtr( gvm, VM_Call( gvm, GAME_CLIENT_CONNECT, i, qfalse, isBot ) ); // firstTime = qfalse
if ( denied )
{
// this generally shouldn't happen, because the client
// was connected before the level change
SV_DropClient( &svs.clients[ i ], denied );
}
else
{
if ( !isBot )
{
// when we get the next packet from a connected client,
// the new gamestate will be sent
svs.clients[ i ].state = CS_CONNECTED;
}
else
{
client_t *client;
sharedEntity_t *ent;
client = &svs.clients[ i ];
client->state = CS_ACTIVE;
ent = SV_GentityNum( i );
ent->s.number = i;
client->gentity = ent;
client->deltaMessage = -1;
client->nextSnapshotTime = svs.time; // generate a snapshot immediately
VM_Call( gvm, GAME_CLIENT_BEGIN, i );
}
}
}
}
// run another frame to allow things to look at all the players
VM_Call( gvm, GAME_RUN_FRAME, svs.time );
SV_BotFrame( svs.time );
svs.time += FRAMETIME;
if ( sv_pure->integer )
{
// the server sends these to the clients so they will only
// load pk3s also loaded at the server
p = FS_LoadedPakChecksums();
Cvar_Set( "sv_paks", p );
if ( strlen( p ) == 0 )
{
Com_Printf(_( "WARNING: sv_pure set but no PK3 files loaded\n" ));
}
p = FS_LoadedPakNames();
Cvar_Set( "sv_pakNames", p );
// if a dedicated pure server we need to touch the cgame because it could be in a
// separate pk3 file and the client will need to load the latest cgame.qvm
if ( com_dedicated->integer )
{
SV_TouchCGame();
}
}
else
{
Cvar_Set( "sv_paks", "" );
Cvar_Set( "sv_pakNames", "" );
}
// the server sends these to the clients so they can figure
// out which pk3s should be auto-downloaded
// NOTE: we consider the referencedPaks as 'required for operation'
p = FS_ReferencedPakChecksums();
Cvar_Set( "sv_referencedPaks", p );
p = FS_ReferencedPakNames();
Cvar_Set( "sv_referencedPakNames", p );
// save systeminfo and serverinfo strings
cvar_modifiedFlags &= ~CVAR_SYSTEMINFO;
SV_SetConfigstring( CS_SYSTEMINFO, Cvar_InfoString( CVAR_SYSTEMINFO, qtrue ) );
SV_SetConfigstring( CS_SERVERINFO, Cvar_InfoString( CVAR_SERVERINFO | CVAR_SERVERINFO_NOUPDATE, qfalse ) );
cvar_modifiedFlags &= ~CVAR_SERVERINFO;
// any media configstring setting now should issue a warning
// and any configstring changes should be reliably transmitted
// to all clients
sv.state = SS_GAME;
// send a heartbeat now so the master will get up to date info
SV_Heartbeat_f();
Hunk_SetMark();
SV_UpdateConfigStrings();
Cvar_Set( "sv_serverRestarting", "0" );
SV_AddOperatorCommands();
Com_Printf( "-----------------------------------\n" );
}
/*
=================
SV_Disconnect_f
The client is going to disconnect, so remove the connection immediately FIXME: move to game?
=================
*/
static void SV_Disconnect_f( client_t *cl ) {
SV_DropClient( cl, "@@@DISCONNECTED" );
}
/*
=======================
SV_SendMessageToClient
Called by SV_SendClientSnapshot and SV_SendClientGameState
=======================
*/
__cdecl void SV_SendMessageToClient( msg_t *msg, client_t *client ) {
int rateMsec;
int len;
*(int32_t*)0x13f39080 = *(int32_t*)msg->data;
len = 4 + MSG_WriteBitsCompress( 0, msg->data + 4 ,(byte*)0x13f39084 ,msg->cursize - 4);
if(client->delayDropMsg){
SV_DropClient(client, client->delayDropMsg);
}
if(client->demorecording && !client->demowaiting)
SV_WriteDemoMessageForClient((byte*)0x13f39080, len, client);
// record information about the message
client->frames[client->netchan.outgoingSequence & PACKET_MASK].messageSize = len;
client->frames[client->netchan.outgoingSequence & PACKET_MASK].messageSent = Sys_Milliseconds();
client->frames[client->netchan.outgoingSequence & PACKET_MASK].messageAcked = 0xFFFFFFFF;
// send the datagram
SV_Netchan_Transmit( client, (byte*)0x13f39080, len );
// set nextSnapshotTime based on rate and requested number of updates
// local clients get snapshots every frame
// TTimo - show_bug.cgi?id=491
// added sv_lanForceRate check
if(client->state == CS_ACTIVE && client->deltaMessage >= 0 && client->netchan.outgoingSequence - client->deltaMessage > 28){
client->nextSnapshotTime = svs.time + client->snapshotMsec * irand();
if(client->unknown6 +1 > 8)
{
client->unknown6 = 8;
}
}
client->unknown6 = 0;
if ( client->netchan.remoteAddress.type == NA_LOOPBACK || Sys_IsLANAddress( &client->netchan.remoteAddress )) {
client->nextSnapshotTime = svs.time - 1;
return;
}
// normal rate / snapshotMsec calculation
rateMsec = SV_RateMsec( client, msg->cursize );
// TTimo - during a download, ignore the snapshotMsec
// the update server on steroids, with this disabled and sv_fps 60, the download can reach 30 kb/s
// on a regular server, we will still top at 20 kb/s because of sv_fps 20
if ( !*client->downloadName && rateMsec < client->snapshotMsec ) {
// never send more packets than this, no matter what the rate is at
rateMsec = client->snapshotMsec;
client->rateDelayed = qfalse;
} else {
client->rateDelayed = qtrue;
}
client->nextSnapshotTime = svs.time + rateMsec;
// don't pile up empty snapshots while connecting
if ( client->state != CS_ACTIVE && !*client->downloadName) {
// a gigantic connection message may have already put the nextSnapshotTime
// more than a second away, so don't shorten it
// do shorten if client is downloading
if ( client->nextSnapshotTime < svs.time + 1000 ) {
client->nextSnapshotTime = svs.time + 1000;
}
}
sv.bpsTotalBytes += len ;
}
/*
=================
SV_VerifyPaks_f
If we are pure, disconnect the client if they do no meet the following conditions:
1. the first two checksums match our view of cgame and ui
2. there are no any additional checksums that we do not have
This routine would be a bit simpler with a goto but i abstained
=================
*/
static void SV_VerifyPaks_f( client_t *cl ) {
int nChkSum1, nChkSum2, nClientPaks, nServerPaks, i, j, nCurArg;
int nClientChkSum[1024];
int nServerChkSum[1024];
const char *pPaks, *pArg;
qboolean bGood = qtrue;
// if we are pure, we "expect" the client to load certain things from
// certain pk3 files, namely we want the client to have loaded the
// ui and cgame that we think should be loaded based on the pure setting
//
if ( sv_pure->integer != 0 ) {
nChkSum1 = nChkSum2 = 0;
// we run the game, so determine which cgame and ui the client "should" be running
bGood = (FS_FileIsInPAK("cgame" ARCH_STRING DLL_EXT, &nChkSum1) == 1);
if (bGood)
bGood = (FS_FileIsInPAK("ui" ARCH_STRING DLL_EXT, &nChkSum2) == 1);
nClientPaks = Cmd_Argc();
// start at arg 2 ( skip serverId cl_paks )
nCurArg = 1;
pArg = Cmd_Argv(nCurArg++);
if(!pArg) {
bGood = qfalse;
}
else
{
// https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=475
// we may get incoming cp sequences from a previous checksumFeed, which we need to ignore
// since serverId is a frame count, it always goes up
if (atoi(pArg) < sv.checksumFeedServerId)
{
Com_DPrintf("ignoring outdated cp command from client %s\n", cl->name);
return;
}
}
// we basically use this while loop to avoid using 'goto' :)
while (bGood) {
// must be at least 6: "cl_paks cgame ui @ firstref ... numChecksums"
// numChecksums is encoded
if (nClientPaks < 6) {
bGood = qfalse;
break;
}
// verify first to be the cgame checksum
pArg = Cmd_Argv(nCurArg++);
if (!pArg || *pArg == '@' || atoi(pArg) != nChkSum1 ) {
bGood = qfalse;
break;
}
// verify the second to be the ui checksum
pArg = Cmd_Argv(nCurArg++);
if (!pArg || *pArg == '@' || atoi(pArg) != nChkSum2 ) {
bGood = qfalse;
break;
}
// should be sitting at the delimeter now
pArg = Cmd_Argv(nCurArg++);
if (*pArg != '@') {
bGood = qfalse;
break;
}
// store checksums since tokenization is not re-entrant
for (i = 0; nCurArg < nClientPaks; i++) {
nClientChkSum[i] = atoi(Cmd_Argv(nCurArg++));
}
// store number to compare against (minus one cause the last is the number of checksums)
nClientPaks = i - 1;
// make sure none of the client check sums are the same
// so the client can't send 5 the same checksums
for (i = 0; i < nClientPaks; i++) {
for (j = 0; j < nClientPaks; j++) {
if (i == j)
continue;
if (nClientChkSum[i] == nClientChkSum[j]) {
bGood = qfalse;
break;
}
}
if (bGood == qfalse)
break;
}
if (bGood == qfalse)
break;
// get the pure checksums of the pk3 files loaded by the server
pPaks = FS_LoadedPakPureChecksums();
Cmd_TokenizeString( pPaks );
nServerPaks = Cmd_Argc();
if (nServerPaks > 1024)
nServerPaks = 1024;
for (i = 0; i < nServerPaks; i++) {
nServerChkSum[i] = atoi(Cmd_Argv(i));
}
// check if the client has provided any pure checksums of pk3 files not loaded by the server
for (i = 0; i < nClientPaks; i++) {
for (j = 0; j < nServerPaks; j++) {
if (nClientChkSum[i] == nServerChkSum[j]) {
break;
}
}
if (j >= nServerPaks) {
bGood = qfalse;
break;
}
}
if ( bGood == qfalse ) {
break;
}
// check if the number of checksums was correct
nChkSum1 = sv.checksumFeed;
for (i = 0; i < nClientPaks; i++) {
nChkSum1 ^= nClientChkSum[i];
}
nChkSum1 ^= nClientPaks;
if (nChkSum1 != nClientChkSum[nClientPaks]) {
bGood = qfalse;
break;
}
// break out
break;
}
cl->gotCP = qtrue;
if (bGood) {
cl->pureAuthentic = 1;
}
else {
cl->pureAuthentic = 0;
cl->lastSnapshotTime = 0;
cl->state = CS_ACTIVE;
SV_SendClientSnapshot( cl );
SV_DropClient( cl, "Unpure client detected. Invalid .PK3 files referenced!" );
}
}
}
/*
================
SV_SpawnServer
Change the server to a new map, taking all connected
clients along with it.
================
*/
void SV_SpawnServer( char *server, ForceReload_e eForceReload, qboolean bAllowScreenDissolve )
{
int i;
int checksum;
RE_RegisterMedia_LevelLoadBegin( server, eForceReload, bAllowScreenDissolve );
Cvar_SetValue( "cl_paused", 0 );
Cvar_Set( "timescale", "1" );//jic we were skipping
// shut down the existing game if it is running
SV_ShutdownGameProgs();
Com_Printf ("------ Server Initialization ------\n%s\n", com_version->string);
Com_Printf ("Server: %s\n",server);
// init client structures and svs.numSnapshotEntities
if ( !Cvar_VariableIntegerValue("sv_running") ) {
SV_Startup();
}
// don't let sound stutter and dump all stuff on the hunk
CL_MapLoading();
Hunk_Clear();
// clear out those shaders, images and Models
R_InitImages();
R_InitShaders();
R_ModelInit();
// create a heap for Ghoul2 to use for game side model vertex transforms used in collision detection
if (!G2VertSpaceServer)
{
static const int MiniHeapSize=128 * 1024; // maxsize of ghoul2 miniheap
G2VertSpaceServer = new CMiniHeap(MiniHeapSize);
}
if (svs.snapshotEntities)
{
Z_Free(svs.snapshotEntities);
}
// allocate the snapshot entities
svs.snapshotEntities = (entityState_t *) Z_Malloc (sizeof(entityState_t)*svs.numSnapshotEntities, TAG_CLIENTS, qtrue );
Music_SetLevelName(server);
// toggle the server bit so clients can detect that a
// server has changed
//!@ svs.snapFlagServerBit ^= SNAPFLAG_SERVERCOUNT;
// set nextmap to the same map, but it may be overriden
// by the game startup or another console command
Cvar_Set( "nextmap", va("map %s", server) );
// wipe the entire per-level structure
for ( i = 0 ; i < MAX_CONFIGSTRINGS ; i++ ) {
if ( sv.configstrings[i] ) {
Z_Free( sv.configstrings[i] );
}
}
memset (&sv, 0, sizeof(sv));
for ( i = 0 ; i < MAX_CONFIGSTRINGS ; i++ ) {
sv.configstrings[i] = CopyString("");
}
sv.time = 1000;
G2API_SetTime(sv.time,G2T_SV_TIME);
CM_LoadMap( va("maps/%s.bsp", server), qfalse, &checksum );
// set serverinfo visible name
Cvar_Set( "mapname", server );
Cvar_Set( "sv_mapChecksum", va("%i",checksum) );
// serverid should be different each time
sv.serverId = com_frameTime;
Cvar_Set( "sv_serverid", va("%i", sv.serverId ) );
// clear physics interaction links
SV_ClearWorld ();
// media configstring setting should be done during
// the loading stage, so connected clients don't have
// to load during actual gameplay
sv.state = SS_LOADING;
// load and spawn all other entities
SV_InitGameProgs();
// run a few frames to allow everything to settle
for ( i = 0 ;i < 3 ; i++ ) {
ge->RunFrame( sv.time );
sv.time += 100;
G2API_SetTime(sv.time,G2T_SV_TIME);
}
// create a baseline for more efficient communications
SV_CreateBaseline ();
for (i=0 ; i<1 ; i++) {
// clear all time counters, because we have reset sv.time
svs.clients[i].lastPacketTime = 0;
svs.clients[i].lastConnectTime = 0;
svs.clients[i].nextSnapshotTime = 0;
// send the new gamestate to all connected clients
if (svs.clients[i].state >= CS_CONNECTED) {
char *denied;
// connect the client again
denied = ge->ClientConnect( i, qfalse, eNO/*qfalse*/ ); // firstTime = qfalse, qbFromSavedGame
if ( denied ) {
// this generally shouldn't happen, because the client
// was connected before the level change
SV_DropClient( &svs.clients[i], denied );
} else {
svs.clients[i].state = CS_CONNECTED;
// when we get the next packet from a connected client,
// the new gamestate will be sent
}
}
}
// run another frame to allow things to look at all connected clients
ge->RunFrame( sv.time );
sv.time += 100;
G2API_SetTime(sv.time,G2T_SV_TIME);
// save systeminfo and serverinfo strings
SV_SetConfigstring( CS_SYSTEMINFO, Cvar_InfoString( CVAR_SYSTEMINFO ) );
cvar_modifiedFlags &= ~CVAR_SYSTEMINFO;
SV_SetConfigstring( CS_SERVERINFO, Cvar_InfoString( CVAR_SERVERINFO ) );
cvar_modifiedFlags &= ~CVAR_SERVERINFO;
// any media configstring setting now should issue a warning
// and any configstring changes should be reliably transmitted
// to all clients
sv.state = SS_GAME;
// send a heartbeat now so the master will get up to date info
svs.nextHeartbeatTime = -9999999;
Hunk_SetMark();
Com_Printf ("-----------------------------------\n");
}
/*
=================
SV_UserinfoChanged
Pull specific info from a newly changed userinfo string
into a more C friendly form.
=================
*/
void SV_UserinfoChanged( client_t *cl ) {
char *val;
char *ip;
int i;
int len;
// name for C code
Q_strncpyz( cl->name, Info_ValueForKey (cl->userinfo, "name"), sizeof(cl->name) );
// rate command
// if the client is on the same subnet as the server and we aren't running an
// internet public server, assume they don't need a rate choke
if ( Sys_IsLANAddress( cl->netchan.remoteAddress ) && com_dedicated->integer != 2 && sv_lanForceRate->integer == 1) {
cl->rate = 99999; // lans should not rate limit
} else {
val = Info_ValueForKey (cl->userinfo, "rate");
if (strlen(val)) {
i = atoi(val);
cl->rate = i;
if (cl->rate < 1000) {
cl->rate = 1000;
} else if (cl->rate > 90000) {
cl->rate = 90000;
}
} else {
cl->rate = 3000;
}
}
val = Info_ValueForKey (cl->userinfo, "handicap");
if (strlen(val)) {
i = atoi(val);
if (i<=0 || i>100 || strlen(val) > 4) {
Info_SetValueForKey( cl->userinfo, "handicap", "100" );
}
}
// snaps command
val = Info_ValueForKey (cl->userinfo, "snaps");
if(strlen(val))
{
i = atoi(val);
if(i < 1)
i = 1;
else if(i > sv_fps->integer)
i = sv_fps->integer;
i = 1000 / i;
}
else
i = 50;
if(i != cl->snapshotMsec)
{
// Reset last sent snapshot so we avoid desync between server frame time and snapshot send time
cl->lastSnapshotTime = 0;
cl->snapshotMsec = i;
}
#ifdef USE_VOIP
#ifdef LEGACY_PROTOCOL
if(cl->compat)
cl->hasVoip = qfalse;
else
#endif
{
val = Info_ValueForKey(cl->userinfo, "cl_voip");
cl->hasVoip = atoi(val);
}
#endif
// TTimo
// maintain the IP information
// the banning code relies on this being consistently present
if( NET_IsLocalAddress(cl->netchan.remoteAddress) )
ip = "localhost";
else
ip = (char*)NET_AdrToString( cl->netchan.remoteAddress );
val = Info_ValueForKey( cl->userinfo, "ip" );
if( val[0] )
len = strlen( ip ) - strlen( val ) + strlen( cl->userinfo );
else
len = strlen( ip ) + 4 + strlen( cl->userinfo );
if( len >= MAX_INFO_STRING )
SV_DropClient( cl, "userinfo string length exceeded" );
else
Info_SetValueForKey( cl->userinfo, "ip", ip );
}
/**
* @brief Change the server to a new map, taking all connected
* clients along with it.
* This is NOT called for map_restart
*/
void SV_SpawnServer(char *server)
{
int i;
int checksum;
qboolean isBot;
const char *p;
// broadcast a level change to all connected clients
if (svs.clients && !com_errorEntered)
{
SV_FinalCommand("spawnserver", qfalse);
}
// shut down the existing game if it is running
SV_ShutdownGameProgs();
Com_Printf("------ Server Initialization ------\n");
Com_Printf("Server: %s\n", server);
// if not running a dedicated server CL_MapLoading will connect the client to the server
// also print some status stuff
CL_MapLoading();
// make sure all the client stuff is unloaded
CL_ShutdownAll();
// clear the whole hunk because we're (re)loading the server
Hunk_Clear();
// clear collision map data
CM_ClearMap();
// wipe the entire per-level structure
SV_ClearServer();
// main zone should be pretty much emtpy at this point
// except for file system data and cached renderer data
Z_LogHeap();
// allocate empty config strings
for (i = 0 ; i < MAX_CONFIGSTRINGS ; i++)
{
sv.configstrings[i] = CopyString("");
sv.configstringsmodified[i] = qfalse;
}
// init client structures and svs.numSnapshotEntities
if (!Cvar_VariableValue("sv_running"))
{
SV_Startup();
}
else
{
// check for maxclients change
if (sv_maxclients->modified)
{
// If we are playing/waiting to play/waiting to stop a demo, we use a specialized function that will move real clients slots (so that democlients will be put to their original slots they were affected at the time of the real game)
if (sv.demoState == DS_WAITINGPLAYBACK || sv.demoState == DS_PLAYBACK || sv.demoState == DS_WAITINGSTOP)
{
SV_DemoChangeMaxClients();
}
else
{
SV_ChangeMaxClients();
}
}
}
// clear pak references
FS_ClearPakReferences(0);
// allocate the snapshot entities on the hunk
svs.snapshotEntities = Hunk_Alloc(sizeof(entityState_t) * svs.numSnapshotEntities, h_high);
svs.nextSnapshotEntities = 0;
// toggle the server bit so clients can detect that a
// server has changed
svs.snapFlagServerBit ^= SNAPFLAG_SERVERCOUNT;
// set nextmap to the same map, but it may be overriden
// by the game startup or another console command
Cvar_Set("nextmap", "map_restart 0");
SV_SetExpectedHunkUsage(va("maps/%s.bsp", server));
// make sure we are not paused
Cvar_Set("cl_paused", "0");
// get a new checksum feed and restart the file system
srand(Sys_Milliseconds());
sv.checksumFeed = ((rand() << 16) ^ rand()) ^ Sys_Milliseconds();
// only comment out when you need a new pure checksum string and it's associated random feed
// Com_DPrintf("SV_SpawnServer checksum feed: %p\n", sv.checksumFeed);
FS_Restart(sv.checksumFeed);
CM_LoadMap(va("maps/%s.bsp", server), qfalse, &checksum);
// set serverinfo visible name
Cvar_Set("mapname", server);
Cvar_Set("sv_mapChecksum", va("%i", checksum));
// serverid should be different each time
sv.serverId = com_frameTime;
sv.restartedServerId = sv.serverId;
sv.checksumFeedServerId = sv.serverId;
Cvar_Set("sv_serverid", va("%i", sv.serverId));
// clear physics interaction links
SV_ClearWorld();
// media configstring setting should be done during
// the loading stage, so connected clients don't have
// to load during actual gameplay
sv.state = SS_LOADING;
// load and spawn all other entities
SV_InitGameProgs();
// run a few frames to allow everything to settle
for (i = 0 ; i < GAME_INIT_FRAMES ; i++)
{
VM_Call(gvm, GAME_RUN_FRAME, svs.time);
svs.time += FRAMETIME;
}
// create a baseline for more efficient communications
SV_CreateBaseline();
for (i = 0 ; i < sv_maxclients->integer ; i++)
{
// send the new gamestate to all connected clients
if (svs.clients[i].state >= CS_CONNECTED)
{
char *denied;
if (svs.clients[i].netchan.remoteAddress.type == NA_BOT)
{
isBot = qtrue;
}
else
{
isBot = qfalse;
}
// connect the client again
denied = VM_ExplicitArgPtr(gvm, VM_Call(gvm, GAME_CLIENT_CONNECT, i, qfalse, isBot)); // firstTime = qfalse
if (denied)
{
// this generally shouldn't happen, because the client
// was connected before the level change
SV_DropClient(&svs.clients[i], denied);
}
else
{
if (!isBot)
{
// when we get the next packet from a connected client,
// the new gamestate will be sent
svs.clients[i].state = CS_CONNECTED;
}
else
{
client_t *client;
sharedEntity_t *ent;
client = &svs.clients[i];
client->state = CS_ACTIVE;
ent = SV_GentityNum(i);
ent->s.number = i;
client->gentity = ent;
client->deltaMessage = -1;
client->lastSnapshotTime = 0; // generate a snapshot immediately
VM_Call(gvm, GAME_CLIENT_BEGIN, i);
}
}
}
}
// run another frame to allow things to look at all the players
VM_Call(gvm, GAME_RUN_FRAME, svs.time);
svs.time += FRAMETIME;
if (sv_pure->integer)
{
// the server sends these to the clients so they will only
// load pk3s also loaded at the server
p = FS_LoadedPakChecksums();
Cvar_Set("sv_paks", p);
if (strlen(p) == 0)
{
Com_Printf("WARNING: sv_pure set but no PK3 files loaded\n");
}
p = FS_LoadedPakNames();
Cvar_Set("sv_pakNames", p);
}
else
{
Cvar_Set("sv_paks", "");
Cvar_Set("sv_pakNames", "");
}
// the server sends these to the clients so they can figure
// out which pk3s should be auto-downloaded
// NOTE: we consider the referencedPaks as 'required for operation'
// we want the server to reference the mod_bin pk3 that the client is expected to load from
SV_TouchCGameDLL();
p = FS_ReferencedPakChecksums();
Cvar_Set("sv_referencedPaks", p);
p = FS_ReferencedPakNames();
Cvar_Set("sv_referencedPakNames", p);
// save systeminfo and serverinfo strings
cvar_modifiedFlags &= ~CVAR_SYSTEMINFO;
SV_SetConfigstring(CS_SYSTEMINFO, Cvar_InfoString_Big(CVAR_SYSTEMINFO));
SV_SetConfigstring(CS_SERVERINFO, Cvar_InfoString(CVAR_SERVERINFO | CVAR_SERVERINFO_NOUPDATE));
cvar_modifiedFlags &= ~CVAR_SERVERINFO;
SV_SetConfigstring(CS_WOLFINFO, Cvar_InfoString(CVAR_WOLFINFO));
cvar_modifiedFlags &= ~CVAR_WOLFINFO;
// any media configstring setting now should issue a warning
// and any configstring changes should be reliably transmitted
// to all clients
sv.state = SS_GAME;
// send a heartbeat now so the master will get up to date info
if (sv_advert->integer & SVA_MASTER)
{
SV_Heartbeat_f();
}
else // let admin's know it's disabled
{
Com_Printf("Not sending heartbeats to master servers - disabled by sv_advert.\n");
}
Hunk_SetMark();
SV_UpdateConfigStrings();
Com_Printf("-----------------------------------\n");
// start recording a demo
if (sv_autoDemo->integer)
{
SV_DemoAutoDemoRecord();
}
}
/*
==================
SV_UserMove
The message usually contains all the movement commands
that were in the last three packets, so that the information
in dropped packets can be recovered.
On very fast clients, there may be multiple usercmd packed into
each of the backup packets.
==================
*/
static void SV_UserMove( client_t *cl, msg_t *msg, qboolean delta ) {
int i, key;
int cmdCount;
usercmd_t nullcmd;
usercmd_t cmds[MAX_PACKET_USERCMDS];
usercmd_t *cmd, *oldcmd;
if ( delta ) {
cl->deltaMessage = cl->messageAcknowledge;
} else {
cl->deltaMessage = -1;
}
cmdCount = MSG_ReadByte( msg );
if ( cmdCount < 1 ) {
Com_Printf( "cmdCount < 1\n" );
return;
}
if ( cmdCount > MAX_PACKET_USERCMDS ) {
Com_Printf( "cmdCount > MAX_PACKET_USERCMDS\n" );
return;
}
// use the checksum feed in the key
key = sv.checksumFeed;
// also use the message acknowledge
key ^= cl->messageAcknowledge;
// also use the last acknowledged server command in the key
key ^= MSG_HashKey(cl->reliableCommands[ cl->reliableAcknowledge & (MAX_RELIABLE_COMMANDS-1) ], 64);
Com_Memset( &nullcmd, 0, sizeof(nullcmd) );
oldcmd = &nullcmd;
for ( i = 0 ; i < cmdCount ; i++ ) {
cmd = &cmds[i];
MSG_ReadDeltaUsercmdKey( msg, key, oldcmd, cmd );
oldcmd = cmd;
}
// save time for ping calculation
cl->frames[ cl->messageAcknowledge & PACKET_MASK ].messageAcked = svs.time;
// TTimo
// catch the no-cp-yet situation before SV_ClientEnterWorld
// if CS_ACTIVE, then it's time to trigger a new gamestate emission
// if not, then we are getting remaining parasite usermove commands, which we should ignore
if (sv_pure->integer != 0 && cl->pureAuthentic == 0 && !cl->gotCP) {
if (cl->state == CS_ACTIVE)
{
// we didn't get a cp yet, don't assume anything and just send the gamestate all over again
Com_DPrintf( "%s: didn't get cp command, resending gamestate\n", cl->name);
SV_SendClientGameState( cl );
}
return;
}
// if this is the first usercmd we have received
// this gamestate, put the client into the world
if ( cl->state == CS_PRIMED ) {
SV_ClientEnterWorld( cl, &cmds[0] );
// the moves can be processed normaly
}
// a bad cp command was sent, drop the client
if (sv_pure->integer != 0 && cl->pureAuthentic == 0) {
SV_DropClient( cl, "Cannot validate pure client!");
return;
}
if ( cl->state != CS_ACTIVE ) {
cl->deltaMessage = -1;
return;
}
// usually, the first couple commands will be duplicates
// of ones we have previously received, but the servertimes
// in the commands will cause them to be immediately discarded
for ( i = 0 ; i < cmdCount ; i++ ) {
// if this is a cmd from before a map_restart ignore it
if ( cmds[i].serverTime > cmds[cmdCount-1].serverTime ) {
continue;
}
// extremely lagged or cmd from before a map_restart
//if ( cmds[i].serverTime > svs.time + 3000 ) {
// continue;
//}
// don't execute if this is an old cmd which is already executed
// these old cmds are included when cl_packetdup > 0
if ( cmds[i].serverTime <= cl->lastUsercmd.serverTime ) {
continue;
}
SV_ClientThink (cl, &cmds[ i ]);
}
}
/*
* SV_ParseClientMessage
* The current message is parsed for the given client
*/
void SV_ParseClientMessage( client_t *client, msg_t *msg )
{
int c;
char *s;
bool move_issued;
unsigned int cmdNum;
if( !msg )
return;
SV_UpdateActivity();
// only allow one move command
move_issued = false;
while( 1 )
{
if( msg->readcount > msg->cursize )
{
Com_Printf( "SV_ParseClientMessage: badread\n" );
SV_DropClient( client, DROP_TYPE_GENERAL, "%s", "Error: Bad message" );
return;
}
c = MSG_ReadByte( msg );
if( c == -1 )
break;
switch( c )
{
default:
Com_Printf( "SV_ParseClientMessage: unknown command char\n" );
SV_DropClient( client, DROP_TYPE_GENERAL, "%s", "Error: Unknown command char" );
return;
case clc_nop:
break;
case clc_move:
{
if( move_issued )
return; // someone is trying to cheat...
move_issued = true;
SV_ParseMoveCommand( client, msg );
}
break;
case clc_svcack:
{
if( client->reliable )
{
Com_Printf( "SV_ParseClientMessage: svack from reliable client\n" );
SV_DropClient( client, DROP_TYPE_GENERAL, "%s", "Error: svack from reliable client" );
return;
}
cmdNum = MSG_ReadLong( msg );
if( cmdNum < client->reliableAcknowledge || cmdNum > client->reliableSent )
{
//SV_DropClient( client, DROP_TYPE_GENERAL, "%s", "Error: bad server command acknowledged" );
return;
}
client->reliableAcknowledge = cmdNum;
}
break;
case clc_clientcommand:
if( !client->reliable )
{
cmdNum = MSG_ReadLong( msg );
if( cmdNum <= client->clientCommandExecuted )
{
s = MSG_ReadString( msg ); // read but ignore
continue;
}
client->clientCommandExecuted = cmdNum;
}
s = MSG_ReadString( msg );
SV_ExecuteUserCommand( client, s );
if( client->state == CS_ZOMBIE )
return; // disconnect command
break;
case clc_extension:
if( 1 )
{
int ext, len;
ext = MSG_ReadByte( msg ); // extension id
MSG_ReadByte( msg ); // version number
len = MSG_ReadShort( msg ); // command length
switch( ext )
{
default:
// unsupported
MSG_SkipData( msg, len );
break;
}
}
break;
}
}
}
/*
===================
SV_ExecuteClientMessage
Parse a client packet
===================
*/
void SV_ExecuteClientMessage( client_t *cl, msg_t *msg ) {
int c;
int serverId;
MSG_Bitstream(msg);
serverId = MSG_ReadLong( msg );
cl->messageAcknowledge = MSG_ReadLong( msg );
if (cl->messageAcknowledge < 0) {
// usually only hackers create messages like this
// it is more annoying for them to let them hanging
#ifndef NDEBUG
SV_DropClient( cl, "DEBUG: illegible client message" );
#endif
return;
}
cl->reliableAcknowledge = MSG_ReadLong( msg );
// NOTE: when the client message is fux0red the acknowledgement numbers
// can be out of range, this could cause the server to send thousands of server
// commands which the server thinks are not yet acknowledged in SV_UpdateServerCommandsToClient
if (cl->reliableAcknowledge < cl->reliableSequence - MAX_RELIABLE_COMMANDS) {
// usually only hackers create messages like this
// it is more annoying for them to let them hanging
#ifndef NDEBUG
SV_DropClient( cl, "DEBUG: illegible client message" );
#endif
cl->reliableAcknowledge = cl->reliableSequence;
return;
}
// if this is a usercmd from a previous gamestate,
// ignore it or retransmit the current gamestate
//
// if the client was downloading, let it stay at whatever serverId and
// gamestate it was at. This allows it to keep downloading even when
// the gamestate changes. After the download is finished, we'll
// notice and send it a new game state
//
// https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=536
// don't drop as long as previous command was a nextdl, after a dl is done, downloadName is set back to ""
// but we still need to read the next message to move to next download or send gamestate
// I don't like this hack though, it must have been working fine at some point, suspecting the fix is somewhere else
if ( serverId != sv.serverId && !*cl->downloadName && !strstr(cl->lastClientCommandString, "nextdl") ) {
if ( serverId >= sv.restartedServerId && serverId < sv.serverId ) { // TTimo - use a comparison here to catch multiple map_restart
// they just haven't caught the map_restart yet
Com_DPrintf("%s : ignoring pre map_restart / outdated client message\n", cl->name);
return;
}
// if we can tell that the client has dropped the last
// gamestate we sent them, resend it
if ( cl->messageAcknowledge > cl->gamestateMessageNum ) {
Com_DPrintf( "%s : dropped gamestate, resending\n", cl->name );
SV_SendClientGameState( cl );
}
return;
}
// this client has acknowledged the new gamestate so it's
// safe to start sending it the real time again
if( cl->oldServerTime && serverId == sv.serverId ){
Com_DPrintf( "%s acknowledged gamestate\n", cl->name );
cl->oldServerTime = 0;
}
// read optional clientCommand strings
do {
c = MSG_ReadByte( msg );
if ( c == clc_EOF ) {
break;
}
if ( c != clc_clientCommand ) {
break;
}
if ( !SV_ClientCommand( cl, msg ) ) {
return; // we couldn't execute it because of the flood protection
}
if (cl->state == CS_ZOMBIE) {
return; // disconnect command
}
} while ( 1 );
// read the usercmd_t
if ( c == clc_move ) {
SV_UserMove( cl, msg, qtrue );
} else if ( c == clc_moveNoDelta ) {
SV_UserMove( cl, msg, qfalse );
} else if ( c == clc_voip ) {
#ifdef USE_VOIP
SV_UserVoip( cl, msg );
#endif
} else if ( c != clc_EOF ) {
Com_Printf( "WARNING: bad command byte for client %i\n", (int) (cl - svs.clients) );
}
// if ( msg->readcount != msg->cursize ) {
// Com_Printf( "WARNING: Junk at end of packet for client %i\n", cl - svs.clients );
// }
}
/* <ba1d0> ../engine/sv_upld.c:491 */
void SV_ParseResourceList(client_t *pSenderClient)
{
int i, total;
int totalsize;
resource_t *resource;
resourceinfo_t ri;
total = MSG_ReadShort();
#ifdef REHLDS_FIXES
SV_ClearResourceLists( host_client );
#else // REHLDS_FIXES
SV_ClearResourceList( &host_client->resourcesneeded );
SV_ClearResourceList( &host_client->resourcesonhand );
#endif // REHLDS_FIXES
#ifdef REHLDS_FIXES
if (total > 1) // client uses only one custom resource (spray decal)
{
SV_DropClient(host_client, false, "Too many resources in client resource list");
return;
}
#endif // REHLDS_CHECKS
for (i = 0; i < total; i++)
{
resource = (resource_t *)Mem_ZeroMalloc(sizeof(resource_t));
Q_strncpy(resource->szFileName, MSG_ReadString(), sizeof(resource->szFileName) - 1);
resource->szFileName[sizeof(resource->szFileName) - 1] = 0;
resource->type = (resourcetype_t)MSG_ReadByte();
resource->nIndex = MSG_ReadShort();
resource->nDownloadSize = MSG_ReadLong();
resource->ucFlags = MSG_ReadByte() & (~RES_WASMISSING);
if (resource->ucFlags & RES_CUSTOM)
MSG_ReadBuf(16, resource->rgucMD5_hash);
resource->pNext = NULL;
resource->pPrev = NULL;
#ifdef REHLDS_FIXES
SV_AddToResourceList(resource, &host_client->resourcesneeded); // FIXED: Mem leak. Add to list to free current resource in SV_ClearResourceList if something goes wrong.
#endif // REHLDS_FIXES
if (msg_badread || resource->type > t_world ||
#ifdef REHLDS_FIXES
resource->type != t_decal || !(resource->ucFlags & RES_CUSTOM) || Q_strcmp(resource->szFileName, "tempdecal.wad") != 0 || // client uses only tempdecal.wad for customization
resource->nDownloadSize <= 0 || // FIXED: Check that download size is valid
#endif // REHLDS_FIXES
resource->nDownloadSize > 1024 * 1024 * 1024) // FIXME: Are they gone crazy??!
{
#ifdef REHLDS_FIXES
SV_ClearResourceLists( host_client );
#else // REHLDS_FIXES
SV_ClearResourceList( &host_client->resourcesneeded );
SV_ClearResourceList( &host_client->resourcesonhand );
#endif // REHLDS_FIXES
return;
}
#ifndef REHLDS_FIXES
SV_AddToResourceList(resource, &host_client->resourcesneeded);
#endif // REHLDS_FIXES
}
if (sv_allow_upload.value != 0.0f)
{
Con_DPrintf("Verifying and uploading resources...\n");
totalsize = COM_SizeofResourceList(&host_client->resourcesneeded, &ri);
#ifdef REHLDS_FIXES
if (totalsize > 0)
#else // REHLDS_FIXES
if (totalsize != 0)
#endif // REHLDS_FIXES
{
Con_DPrintf("Custom resources total %.2fK\n", total / 1024.0f);
#ifndef REHLDS_FIXES // because client can send only decals, why there is need to check other types?
if (ri.info[t_model].size)
{
total = ri.info[t_model].size;
Con_DPrintf(" Models: %.2fK\n", total / 1024.0f);
}
if (ri.info[t_sound].size)
{
total = ri.info[t_sound].size;
Con_DPrintf(" Sounds: %.2fK\n", total / 1024.0f);
}
if (ri.info[t_decal].size)
{
#endif // REHLDS_FIXES
// this check is useless, because presence of decals was checked before.
total = ri.info[t_decal].size;
Con_DPrintf(" Decals: %.2fK\n", total / 1024.0f);
#ifndef REHLDS_FIXES
}
if (ri.info[t_skin].size)
{
total = ri.info[t_skin].size;
Con_DPrintf(" Skins : %.2fK\n", total / 1024.0f);
}
if (ri.info[t_generic].size)
{
total = ri.info[t_generic].size;
Con_DPrintf(" Generic : %.2fK\n", total / 1024.0f);
}
if (ri.info[t_eventscript].size)
{
total = ri.info[t_eventscript].size;
Con_DPrintf(" Events : %.2fK\n", total / 1024.0f);
}
#endif // REHLDS_FIXES
Con_DPrintf("----------------------\n");
int bytestodownload = SV_EstimateNeededResources();
if (bytestodownload > sv_max_upload.value * 1024 * 1024)
{
#ifdef REHLDS_FIXES
SV_ClearResourceLists( host_client );
#else // REHLDS_FIXES
SV_ClearResourceList( &host_client->resourcesneeded );
SV_ClearResourceList( &host_client->resourcesonhand );
#endif //REHLDS_FIXES
return;
}
if (bytestodownload > 1024)
Con_DPrintf("Resources to request: %.2fK\n", bytestodownload / 1024.0f);
else
Con_DPrintf("Resources to request: %i bytes\n", bytestodownload);
}
}
host_client->uploading = TRUE;
host_client->uploaddoneregistering = FALSE;
SV_BatchUploadRequest(host_client);
}
void SV_DirectConnect( netadr_t from ) {
char userinfo[MAX_INFO_STRING];
int i;
client_t *cl, *newcl;
client_t temp;
sharedEntity_t *ent;
int clientNum;
int version;
int qport;
int challenge;
char *password;
int startIndex;
intptr_t denied;
int count;
char *ip;
const char *stringEd;
#ifdef LEGACY_PROTOCOL
qboolean compat = qfalse;
#endif
Com_DPrintf ("SVC_DirectConnect ()\n");
// Check whether this client is banned.
if(SV_IsBanned(&from, qfalse))
{
NET_OutOfBandPrint(NS_SERVER, from, "print\nYou are banned from this server.\n");
return;
}
Q_strncpyz( userinfo, Cmd_Argv(1), sizeof(userinfo) );
version = atoi(Info_ValueForKey(userinfo, "protocol"));
#ifdef LEGACY_PROTOCOL
if(version > 0 && com_legacyprotocol->integer == version)
compat = qtrue;
else
#endif
{
if(version != com_protocol->integer)
{
NET_OutOfBandPrint(NS_SERVER, from, "print\nServer uses protocol version %i "
"(yours is %i).\n", com_protocol->integer, version);
Com_DPrintf(" rejected connect from version %i\n", version);
return;
}
}
challenge = atoi( Info_ValueForKey( userinfo, "challenge" ) );
qport = atoi( Info_ValueForKey( userinfo, "qport" ) );
// quick reject
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( cl->state == CS_FREE ) {
continue;
}
if ( NET_CompareBaseAdr( from, cl->netchan.remoteAddress )
&& ( cl->netchan.qport == qport
|| from.port == cl->netchan.remoteAddress.port ) ) {
if (( svs.time - cl->lastConnectTime)
< (sv_reconnectlimit->integer * 1000)) {
Com_DPrintf ("%s:reconnect rejected : too soon\n", NET_AdrToString (from));
return;
}
break;
}
}
// don't let "ip" overflow userinfo string
if ( NET_IsLocalAddress (from) )
ip = "localhost";
else
ip = (char *)NET_AdrToString( from );
if( ( strlen( ip ) + strlen( userinfo ) + 4 ) >= MAX_INFO_STRING ) {
NET_OutOfBandPrint( NS_SERVER, from,
"print\nUserinfo string length exceeded. "
"Try removing setu cvars from your config.\n" );
return;
}
Info_SetValueForKey( userinfo, "ip", ip );
// see if the challenge is valid (LAN clients don't need to challenge)
if (!NET_IsLocalAddress(from))
{
int ping;
challenge_t *challengeptr;
for (i=0; i<MAX_CHALLENGES; i++)
{
if (NET_CompareAdr(from, svs.challenges[i].adr))
{
if(challenge == svs.challenges[i].challenge)
break;
}
}
if (i == MAX_CHALLENGES)
{
NET_OutOfBandPrint( NS_SERVER, from, "print\nNo or bad challenge for your address.\n" );
return;
}
challengeptr = &svs.challenges[i];
if(challengeptr->wasrefused)
{
// Return silently, so that error messages written by the server keep being displayed.
return;
}
ping = svs.time - challengeptr->pingTime;
// never reject a LAN client based on ping
if ( !Sys_IsLANAddress( from ) ) {
if ( sv_minPing->value && ping < sv_minPing->value ) {
NET_OutOfBandPrint( NS_SERVER, from, "print\n%s", SV_StringEdString("SERVER_FOR_HIGH_PING") );
stringEd = SV_GetString("CLIENT_REJECTED_LOW_PING");
Com_DPrintf (stringEd, i);
challengeptr->wasrefused = qtrue;
return;
}
if ( sv_maxPing->value && ping > sv_maxPing->value ) {
NET_OutOfBandPrint( NS_SERVER, from, "print\n%s", SV_StringEdString("SERVER_FOR_LOW_PING") );
stringEd = SV_GetString("CLIENT_REJECTED_LOW_PING");
Com_DPrintf (stringEd, i);
challengeptr->wasrefused = qtrue;
return;
}
}
stringEd = SV_GetString("CLIENT_CONN_WITH_PING");
Com_Printf(stringEd, i, ping);
challengeptr->connected = qtrue;
}
newcl = &temp;
Com_Memset (newcl, 0, sizeof(client_t));
// if there is already a slot for this ip, reuse it
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( cl->state == CS_FREE ) {
continue;
}
if ( NET_CompareBaseAdr( from, cl->netchan.remoteAddress )
&& ( cl->netchan.qport == qport
|| from.port == cl->netchan.remoteAddress.port ) ) {
Com_Printf ("%s:reconnect\n", NET_AdrToString (from));
newcl = cl;
// this doesn't work because it nukes the players userinfo
// // disconnect the client from the game first so any flags the
// // player might have are dropped
// VM_Call( gvm, GAME_CLIENT_DISCONNECT, newcl - svs.clients );
//
goto gotnewcl;
}
}
// find a client slot
// if "sv_privateClients" is set > 0, then that number
// of client slots will be reserved for connections that
// have "password" set to the value of "sv_privatePassword"
// Info requests will report the maxclients as if the private
// slots didn't exist, to prevent people from trying to connect
// to a full server.
// This is to allow us to reserve a couple slots here on our
// servers so we can play without having to kick people.
// check for privateClient password
password = Info_ValueForKey( userinfo, "password" );
if ( !strcmp( password, sv_privatePassword->string ) ) {
startIndex = 0;
} else {
// skip past the reserved slots
startIndex = sv_privateClients->integer;
}
newcl = NULL;
for ( i = startIndex; i < sv_maxclients->integer ; i++ ) {
cl = &svs.clients[i];
if (cl->state == CS_FREE) {
newcl = cl;
break;
}
}
if ( !newcl ) {
if ( NET_IsLocalAddress( from ) ) {
count = 0;
for ( i = startIndex; i < sv_maxclients->integer ; i++ ) {
cl = &svs.clients[i];
if (cl->netchan.remoteAddress.type == NA_BOT) {
count++;
}
}
// if they're all bots
if (count >= sv_maxclients->integer - startIndex) {
SV_DropClient(&svs.clients[sv_maxclients->integer - 1], "only bots on server");
newcl = &svs.clients[sv_maxclients->integer - 1];
}
else {
Com_Error( ERR_FATAL, "server is full on local connect" );
return;
}
}
else {
NET_OutOfBandPrint( NS_SERVER, from, "print\n%s\n", SV_StringEdString("SERVER_IS_FULL") );
Com_DPrintf ("Rejected a connection.\n");
return;
}
}
// we got a newcl, so reset the reliableSequence and reliableAcknowledge
cl->reliableAcknowledge = 0;
cl->reliableSequence = 0;
gotnewcl:
// build a new connection
// accept the new client
// this is the only place a client_t is ever initialized
*newcl = temp;
clientNum = newcl - svs.clients;
ent = SV_GentityNum( clientNum );
newcl->gentity = ent;
// save the challenge
newcl->challenge = challenge;
// save the address
#ifdef LEGACY_PROTOCOL
newcl->compat = compat;
Netchan_Setup(NS_SERVER, &newcl->netchan, from, qport, challenge, compat);
#else
Netchan_Setup(NS_SERVER, &newcl->netchan, from, qport, challenge, qfalse);
#endif
// init the netchan queue
newcl->netchan_end_queue = &newcl->netchan_start_queue;
// save the userinfo
Q_strncpyz( newcl->userinfo, userinfo, sizeof(newcl->userinfo) );
// get the game a chance to reject this connection or modify the userinfo
denied = VM_Call( gvm, GAME_CLIENT_CONNECT, clientNum, qtrue, qfalse ); // firstTime = qtrue
if ( denied ) {
// we can't just use VM_ArgPtr, because that is only valid inside a VM_Call
char *str = VM_ExplicitArgPtr( gvm, denied );
NET_OutOfBandPrint( NS_SERVER, from, "print\n%s\n", str );
Com_DPrintf ("Game rejected a connection: %s.\n", str);
return;
}
SV_UserinfoChanged( newcl );
// send the connect packet to the client
NET_OutOfBandPrint(NS_SERVER, from, "connectResponse %d", challenge);
Com_DPrintf( "Going from CS_FREE to CS_CONNECTED for %s\n", newcl->name );
newcl->state = CS_CONNECTED;
newcl->lastSnapshotTime = 0;
newcl->lastPacketTime = svs.time;
newcl->lastConnectTime = svs.time;
// when we receive the first packet from the client, we will
// notice that it is from a different serverid and that the
// gamestate message was not just sent, forcing a retransmit
newcl->gamestateMessageNum = -1;
// if this was the first client on the server, or the last client
// the server can hold, send a heartbeat to the master.
count = 0;
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( svs.clients[i].state >= CS_CONNECTED ) {
count++;
}
}
if ( count == 1 || count == sv_maxclients->integer ) {
SV_Heartbeat_f();
}
}
/*
==================
SV_DirectConnect
A "connect" OOB command has been received
==================
*/
void SV_DirectConnect( netadr_t from ) {
char userinfo[MAX_INFO_STRING];
int i;
client_t *cl, *newcl;
MAC_STATIC client_t temp;
sharedEntity_t *ent;
int clientNum;
int version;
int qport;
int challenge;
char *password;
int startIndex;
char *denied;
int count;
Com_DPrintf ("SVC_DirectConnect ()\n");
Q_strncpyz( userinfo, Cmd_Argv(1), sizeof(userinfo) );
version = atoi( Info_ValueForKey( userinfo, "protocol" ) );
if ( version != PROTOCOL_VERSION ) {
NET_OutOfBandPrint( NS_SERVER, from, "print\nServer uses protocol version %i.\n", PROTOCOL_VERSION );
Com_DPrintf (" rejected connect from version %i\n", version);
return;
}
challenge = atoi( Info_ValueForKey( userinfo, "challenge" ) );
qport = atoi( Info_ValueForKey( userinfo, "qport" ) );
// quick reject
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( cl->state == CS_FREE ) {
continue;
}
if ( NET_CompareBaseAdr( from, cl->netchan.remoteAddress )
&& ( cl->netchan.qport == qport
|| from.port == cl->netchan.remoteAddress.port ) ) {
if (( svs.time - cl->lastConnectTime)
< (sv_reconnectlimit->integer * 1000)) {
Com_DPrintf ("%s:reconnect rejected : too soon\n", NET_AdrToString (from));
return;
}
break;
}
}
// see if the challenge is valid (LAN clients don't need to challenge)
if ( !NET_IsLocalAddress (from) ) {
int ping;
for (i=0 ; i<MAX_CHALLENGES ; i++) {
if (NET_CompareAdr(from, svs.challenges[i].adr)) {
if ( challenge == svs.challenges[i].challenge ) {
break; // good
}
}
}
if (i == MAX_CHALLENGES) {
NET_OutOfBandPrint( NS_SERVER, from, "print\nNo or bad challenge for address.\n" );
return;
}
// force the IP key/value pair so the game can filter based on ip
Info_SetValueForKey( userinfo, "ip", NET_AdrToString( from ) );
ping = svs.time - svs.challenges[i].pingTime;
Com_Printf( "Client %i connecting with %i challenge ping\n", i, ping );
svs.challenges[i].connected = qtrue;
// never reject a LAN client based on ping
if ( !Sys_IsLANAddress( from ) ) {
if ( sv_minPing->value && ping < sv_minPing->value ) {
// don't let them keep trying until they get a big delay
NET_OutOfBandPrint( NS_SERVER, from, "print\nServer is for high pings only\n" );
Com_DPrintf ("Client %i rejected on a too low ping\n", i);
// reset the address otherwise their ping will keep increasing
// with each connect message and they'd eventually be able to connect
svs.challenges[i].adr.port = 0;
return;
}
if ( sv_maxPing->value && ping > sv_maxPing->value ) {
NET_OutOfBandPrint( NS_SERVER, from, "print\nServer is for low pings only\n" );
Com_DPrintf ("Client %i rejected on a too high ping\n", i);
return;
}
}
} else {
// force the "ip" info key to "localhost"
Info_SetValueForKey( userinfo, "ip", "localhost" );
}
newcl = &temp;
Com_Memset (newcl, 0, sizeof(client_t));
// if there is already a slot for this ip, reuse it
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( cl->state == CS_FREE ) {
continue;
}
if ( NET_CompareBaseAdr( from, cl->netchan.remoteAddress )
&& ( cl->netchan.qport == qport
|| from.port == cl->netchan.remoteAddress.port ) ) {
Com_Printf ("%s:reconnect\n", NET_AdrToString (from));
newcl = cl;
// disconnect the client from the game first so any flags the
// player might have are dropped
VM_Call( gvm, GAME_CLIENT_DISCONNECT, newcl - svs.clients );
//
goto gotnewcl;
}
}
// find a client slot
// if "sv_privateClients" is set > 0, then that number
// of client slots will be reserved for connections that
// have "password" set to the value of "sv_privatePassword"
// Info requests will report the maxclients as if the private
// slots didn't exist, to prevent people from trying to connect
// to a full server.
// This is to allow us to reserve a couple slots here on our
// servers so we can play without having to kick people.
// check for privateClient password
password = Info_ValueForKey( userinfo, "password" );
if ( !strcmp( password, sv_privatePassword->string ) ) {
startIndex = 0;
} else {
// skip past the reserved slots
startIndex = sv_privateClients->integer;
}
newcl = NULL;
for ( i = startIndex; i < sv_maxclients->integer ; i++ ) {
cl = &svs.clients[i];
if (cl->state == CS_FREE) {
newcl = cl;
break;
}
}
if ( !newcl ) {
if ( NET_IsLocalAddress( from ) ) {
count = 0;
for ( i = startIndex; i < sv_maxclients->integer ; i++ ) {
cl = &svs.clients[i];
if (cl->netchan.remoteAddress.type == NA_BOT) {
count++;
}
}
// if they're all bots
if (count >= sv_maxclients->integer - startIndex) {
SV_DropClient(&svs.clients[sv_maxclients->integer - 1], "only bots on server");
newcl = &svs.clients[sv_maxclients->integer - 1];
}
else {
Com_Error( ERR_FATAL, "server is full on local connect\n" );
return;
}
}
else {
const char *SV_GetStripEdString(char *refSection, char *refName);
NET_OutOfBandPrint( NS_SERVER, from, va("print\n%s\n", SV_GetStripEdString("SVINGAME","SERVER_IS_FULL")));
Com_DPrintf ("Rejected a connection.\n");
return;
}
}
// we got a newcl, so reset the reliableSequence and reliableAcknowledge
cl->reliableAcknowledge = 0;
cl->reliableSequence = 0;
gotnewcl:
// build a new connection
// accept the new client
// this is the only place a client_t is ever initialized
*newcl = temp;
clientNum = newcl - svs.clients;
ent = SV_GentityNum( clientNum );
newcl->gentity = ent;
// save the challenge
newcl->challenge = challenge;
// save the address
Netchan_Setup (NS_SERVER, &newcl->netchan , from, qport);
// save the userinfo
Q_strncpyz( newcl->userinfo, userinfo, sizeof(newcl->userinfo) );
// get the game a chance to reject this connection or modify the userinfo
denied = (char *)VM_Call( gvm, GAME_CLIENT_CONNECT, clientNum, qtrue, qfalse ); // firstTime = qtrue
if ( denied ) {
// we can't just use VM_ArgPtr, because that is only valid inside a VM_Call
denied = (char *)VM_ExplicitArgPtr( gvm, (int)denied );
NET_OutOfBandPrint( NS_SERVER, from, "print\n%s\n", denied );
Com_DPrintf ("Game rejected a connection: %s.\n", denied);
return;
}
SV_UserinfoChanged( newcl );
// send the connect packet to the client
NET_OutOfBandPrint( NS_SERVER, from, "connectResponse" );
Com_DPrintf( "Going from CS_FREE to CS_CONNECTED for %s\n", newcl->name );
newcl->state = CS_CONNECTED;
newcl->nextSnapshotTime = svs.time;
newcl->lastPacketTime = svs.time;
newcl->lastConnectTime = svs.time;
// when we receive the first packet from the client, we will
// notice that it is from a different serverid and that the
// gamestate message was not just sent, forcing a retransmit
newcl->gamestateMessageNum = -1;
// if this was the first client on the server, or the last client
// the server can hold, send a heartbeat to the master.
count = 0;
for (i=0,cl=svs.clients ; i < sv_maxclients->integer ; i++,cl++) {
if ( svs.clients[i].state >= CS_CONNECTED ) {
count++;
}
}
if ( count == 1 || count == sv_maxclients->integer ) {
SV_Heartbeat_f();
}
}
/*
================
SV_MapRestart_f
Completely restarts a level, but doesn't send a new gamestate to the clients.
This allows fair starts with variable load times.
================
*/
static void SV_MapRestart_f(void) {
int i;
client_t* client;
char* denied;
qboolean isBot;
int delay;
// make sure we aren't restarting twice in the same frame
if (com_frameTime == sv.serverId) {
return;
}
// make sure server is running
if (!com_sv_running->integer) {
Com_Printf("Server is not running.\n");
return;
}
if (sv.restartTime) {
return;
}
if (Cmd_Argc() > 1) {
delay = atoi(Cmd_Argv(1));
} else {
delay = 5;
}
if (delay && !Cvar_VariableValue("g_doWarmup")) {
sv.restartTime = sv.time + delay * 1000;
SV_SetConfigstring(CS_WARMUP, va("%i", sv.restartTime));
return;
}
// check for changes in variables that can't just be restarted
// check for maxclients change
if (sv_maxclients->modified || sv_gametype->modified) {
char mapname[MAX_QPATH];
Com_Printf("variable change -- restarting.\n");
// restart the map the slow way
Q_strncpyz(mapname, Cvar_VariableString("mapname"), sizeof(mapname));
SV_SpawnServer(mapname, qfalse);
return;
}
// toggle the server bit so clients can detect that a
// map_restart has happened
svs.snapFlagServerBit ^= SNAPFLAG_SERVERCOUNT;
// generate a new serverid
// TTimo - don't update restartedserverId there, otherwise we won't deal correctly with multiple map_restart
sv.serverId = com_frameTime;
Cvar_Set("sv_serverid", va("%i", sv.serverId));
// if a map_restart occurs while a client is changing maps, we need
// to give them the correct time so that when they finish loading
// they don't violate the backwards time check in cl_cgame.c
for (i = 0 ; i < sv_maxclients->integer ; i++) {
if (svs.clients[i].state == CS_PRIMED) {
svs.clients[i].oldServerTime = sv.restartTime;
}
}
// reset all the vm data in place without changing memory allocation
// note that we do NOT set sv.state = SS_LOADING, so configstrings that
// had been changed from their default values will generate broadcast updates
sv.state = SS_LOADING;
sv.restarting = qtrue;
SV_RestartGameProgs();
// run a few frames to allow everything to settle
for (i = 0; i < 3; i++) {
VM_Call(gvm, GAME_RUN_FRAME, sv.time);
sv.time += 100;
svs.time += 100;
}
sv.state = SS_GAME;
sv.restarting = qfalse;
// connect and begin all the clients
for (i = 0 ; i < sv_maxclients->integer ; i++) {
client = &svs.clients[i];
// send the new gamestate to all connected clients
if (client->state < CS_CONNECTED) {
continue;
}
if (client->netchan.remoteAddress.type == NA_BOT) {
isBot = qtrue;
} else {
isBot = qfalse;
}
// add the map_restart command
SV_AddServerCommand(client, "map_restart\n");
// connect the client again, without the firstTime flag
denied = VM_ExplicitArgPtr(gvm, VM_Call(gvm, GAME_CLIENT_CONNECT, i, qfalse, isBot));
if (denied) {
// this generally shouldn't happen, because the client
// was connected before the level change
SV_DropClient(client, denied);
Com_Printf("SV_MapRestart_f(%d): dropped client %i - denied!\n", delay, i);
continue;
}
if (client->state == CS_ACTIVE)
SV_ClientEnterWorld(client, &client->lastUsercmd);
else {
// If we don't reset client->lastUsercmd and are restarting during map load,
// the client will hang because we'll use the last Usercmd from the previous map,
// which is wrong obviously.
SV_ClientEnterWorld(client, NULL);
}
}
// run another frame to allow things to look at all the players
VM_Call(gvm, GAME_RUN_FRAME, sv.time);
sv.time += 100;
svs.time += 100;
}
/*
=================
SV_VerifyPaks_f
If we are pure, disconnect the client if they do no meet the following conditions:
1. the first two checksums match our view of cgame and ui
2. there are no any additional checksums that we do not have
This routine would be a bit simpler with a goto but i abstained
=================
*/
static void SV_VerifyPaks_f( client_t *cl ) {
int nChkSum1, nChkSum2, nClientPaks, nServerPaks, i, j, nCurArg;
int nClientChkSum[1024];
int nServerChkSum[1024];
const char *pPaks, *pArg;
qboolean bGood = qtrue;
// if we are pure, we "expect" the client to load certain things from
// certain pk3 files, namely we want the client to have loaded the
// ui and cgame that we think should be loaded based on the pure setting
//
if ( sv_pure->integer != 0 ) {
bGood = qtrue;
nChkSum1 = nChkSum2 = 0;
// we run the game, so determine which cgame and ui the client "should" be running
bGood = (qboolean)(FS_FileIsInPAK("vm/cgame.qvm", &nChkSum1) == 1);
if (bGood)
bGood = (qboolean)(FS_FileIsInPAK("vm/ui.qvm", &nChkSum2) == 1);
nClientPaks = Cmd_Argc();
// start at arg 1 ( skip cl_paks )
nCurArg = 1;
// we basically use this while loop to avoid using 'goto' :)
while (bGood) {
// must be at least 6: "cl_paks cgame ui @ firstref ... numChecksums"
// numChecksums is encoded
if (nClientPaks < 6) {
bGood = qfalse;
break;
}
// verify first to be the cgame checksum
pArg = Cmd_Argv(nCurArg++);
if (!pArg || *pArg == '@' || atoi(pArg) != nChkSum1 ) {
bGood = qfalse;
break;
}
// verify the second to be the ui checksum
pArg = Cmd_Argv(nCurArg++);
if (!pArg || *pArg == '@' || atoi(pArg) != nChkSum2 ) {
bGood = qfalse;
break;
}
// should be sitting at the delimeter now
pArg = Cmd_Argv(nCurArg++);
if (*pArg != '@') {
bGood = qfalse;
break;
}
// store checksums since tokenization is not re-entrant
for (i = 0; nCurArg < nClientPaks; i++) {
nClientChkSum[i] = atoi(Cmd_Argv(nCurArg++));
}
// store number to compare against (minus one cause the last is the number of checksums)
nClientPaks = i - 1;
// make sure none of the client check sums are the same
// so the client can't send 5 the same checksums
for (i = 0; i < nClientPaks; i++) {
for (j = 0; j < nClientPaks; j++) {
if (i == j)
continue;
if (nClientChkSum[i] == nClientChkSum[j]) {
bGood = qfalse;
break;
}
}
if (bGood == qfalse)
break;
}
if (bGood == qfalse)
break;
// get the pure checksums of the pk3 files loaded by the server
pPaks = FS_LoadedPakPureChecksums();
Cmd_TokenizeString( pPaks );
nServerPaks = Cmd_Argc();
if (nServerPaks > 1024)
nServerPaks = 1024;
for (i = 0; i < nServerPaks; i++) {
nServerChkSum[i] = atoi(Cmd_Argv(i));
}
// check if the client has provided any pure checksums of pk3 files not loaded by the server
for (i = 0; i < nClientPaks; i++) {
for (j = 0; j < nServerPaks; j++) {
if (nClientChkSum[i] == nServerChkSum[j]) {
break;
}
}
if (j >= nServerPaks) {
bGood = qfalse;
break;
}
}
if ( bGood == qfalse ) {
break;
}
// check if the number of checksums was correct
nChkSum1 = sv.checksumFeed;
for (i = 0; i < nClientPaks; i++) {
nChkSum1 ^= nClientChkSum[i];
}
nChkSum1 ^= nClientPaks;
if (nChkSum1 != nClientChkSum[nClientPaks]) {
bGood = qfalse;
break;
}
// break out
break;
}
if (bGood) {
cl->pureAuthentic = 1;
}
else {
cl->pureAuthentic = 0;
cl->nextSnapshotTime = -1;
cl->state = CS_ACTIVE;
SV_SendClientSnapshot( cl );
SV_DropClient( cl, "Unpure client detected. Invalid .PK3 files referenced!" );
}
}
}
/*
* SV_UserinfoChanged
*
* Pull specific info from a newly changed userinfo string
* into a more C friendly form.
*/
void SV_UserinfoChanged( client_t *client )
{
char *val;
int ival;
assert( client );
assert( Info_Validate( client->userinfo ) );
if( !client->edict || !( client->edict->r.svflags & SVF_FAKECLIENT ) )
{
// force the IP key/value pair so the game can filter based on ip
if( !Info_SetValueForKey( client->userinfo, "socket", NET_SocketTypeToString( client->netchan.socket->type ) ) )
{
SV_DropClient( client, DROP_TYPE_GENERAL, "Error: Couldn't set userinfo (socket)\n" );
return;
}
if( !Info_SetValueForKey( client->userinfo, "ip", NET_AddressToString( &client->netchan.remoteAddress ) ) )
{
SV_DropClient( client, DROP_TYPE_GENERAL, "Error: Couldn't set userinfo (ip)\n" );
return;
}
}
// mm session
ival = 0;
val = Info_ValueForKey( client->userinfo, "cl_mm_session" );
if( val )
ival = atoi( val );
if( !val || ival != client->mm_session )
Info_SetValueForKey( client->userinfo, "cl_mm_session", va("%d", client->mm_session ) );
// mm login
if( client->mm_login[0] != '\0' ) {
Info_SetValueForKey( client->userinfo, "cl_mm_login", client->mm_login );
}
else {
Info_RemoveKey( client->userinfo, "cl_mm_login" );
}
// call prog code to allow overrides
ge->ClientUserinfoChanged( client->edict, client->userinfo );
if( !Info_Validate( client->userinfo ) )
{
SV_DropClient( client, DROP_TYPE_GENERAL, "Error: Invalid userinfo (after game)" );
return;
}
// we assume that game module deals with setting a correct name
val = Info_ValueForKey( client->userinfo, "name" );
if( !val || !val[0] )
{
SV_DropClient( client, DROP_TYPE_GENERAL, "Error: No name set" );
return;
}
Q_strncpyz( client->name, val, sizeof( client->name ) );
#ifndef RATEKILLED
// rate command
if( NET_IsLANAddress( &client->netchan.remoteAddress ) )
{
client->rate = 99999; // lans should not rate limit
}
else
{
val = Info_ValueForKey( client->userinfo, "rate" );
if( val && val[0] )
{
int newrate;
newrate = atoi( val );
if( sv_maxrate->integer && newrate > sv_maxrate->integer )
newrate = sv_maxrate->integer;
else if( newrate > 90000 )
newrate = 90000;
if( newrate < 1000 )
newrate = 1000;
if( client->rate != newrate )
{
client->rate = newrate;
Com_Printf( "%s%s has rate %i\n", client->name, S_COLOR_WHITE, client->rate );
}
}
else
client->rate = 5000;
}
#endif
}
