void SVC_QRY_ParseMasterReply(void)
{
int i, c;
master_t *m;
int ret = net_message.cursize;
unsigned char *answer = net_message.data; // not the smartest way, but why copy from one place to another...
// no point to parse it, we do not query masters
if (!masters_query->integer)
{
Sys_DPrintf("master server reply ignored\n");
return;
}
Sys_DPrintf ("master server reply from %s:%d\n", inet_ntoa(net_from.sin_addr), (int)ntohs(net_from.sin_port));
// is it reply from registered master server or someone trying to do some evil things?
for (i = 0, m = masters.master; i < MAX_MASTERS; i++, m++)
{
if (m->state != ms_used)
continue; // master slot not used
if (NET_CompareAddress(&net_from, &m->addr))
{
// OK - it is reply from registered master server
m->next_query = time(NULL) + QW_MASTER_QUERY_TIME; // delay next query for some time
break;
}
}
if (i >= MAX_MASTERS)
{
Sys_Printf("Reply from not registered master server\n");
return;
}
Sys_DPrintf("master server returned %d bytes\n", ret);
for (c = 0, i = 6; i + 5 < ret; i += 6, c++)
{
char ip[64];
int port = 256 * (int)answer[i+4] + (int)answer[i+5];
snprintf(ip, sizeof(ip), "%u.%u.%u.%u",
(int)answer[i+0], (int)answer[i+1],
(int)answer[i+2], (int)answer[i+3]);
if (developer->integer > 1)
Sys_DPrintf("SERVER: %4d %s:%d\n", c, ip, port);
QRY_SV_new(ip, port, true);
}
}
peer_t *FWD_peer_by_addr(struct sockaddr_in *from)
{
peer_t *p;
for (p = peers; p; p = p->next)
{
if (NET_CompareAddress(&p->from, from))
return p;
}
return NULL;
}
static master_t *QRY_Master_ByAddr(struct sockaddr_in *addr)
{
int i;
master_t *m;
for (i = 0, m = masters.master; i < MAX_MASTERS; i++, m++)
{
if (m->state != ms_used)
continue; // master slot unused
if (NET_CompareAddress(addr, &m->addr))
return m;
}
return NULL;
}
/*
* SVC_DirectConnect
* A connection request that did not come from the master
*/
static void SVC_DirectConnect( const socket_t *socket, const netadr_t *address )
{
#ifdef TCP_ALLOW_CONNECT
int incoming = 0;
#endif
char userinfo[MAX_INFO_STRING];
client_t *cl, *newcl;
int i, version, game_port, challenge;
int previousclients;
int session_id;
char *session_id_str;
unsigned int ticket_id;
qboolean tv_client;
Com_DPrintf( "SVC_DirectConnect (%s)\n", Cmd_Args() );
version = atoi( Cmd_Argv( 1 ) );
if( version != APP_PROTOCOL_VERSION )
{
if( version <= 6 )
{ // before reject packet was added
Netchan_OutOfBandPrint( socket, address, "print\nServer is version %4.2f. Protocol %3i\n",
APP_VERSION, APP_PROTOCOL_VERSION );
}
else
{
Netchan_OutOfBandPrint( socket, address,
"reject\n%i\n%i\nServer and client don't have the same version\n", DROP_TYPE_GENERAL, 0 );
}
Com_DPrintf( " rejected connect from protocol %i\n", version );
return;
}
game_port = atoi( Cmd_Argv( 2 ) );
challenge = atoi( Cmd_Argv( 3 ) );
tv_client = ( atoi( Cmd_Argv( 5 ) ) & 1 ? qtrue : qfalse );
if( !Info_Validate( Cmd_Argv( 4 ) ) )
{
Netchan_OutOfBandPrint( socket, address, "reject\n%i\n%i\nInvalid userinfo string\n", DROP_TYPE_GENERAL, 0 );
Com_DPrintf( "Connection from %s refused: invalid userinfo string\n", NET_AddressToString( address ) );
return;
}
Q_strncpyz( userinfo, Cmd_Argv( 4 ), sizeof( userinfo ) );
// force the IP key/value pair so the game can filter based on ip
if( !Info_SetValueForKey( userinfo, "socket", NET_SocketTypeToString( socket->type ) ) )
{
Netchan_OutOfBandPrint( socket, address, "reject\n%i\n%i\nError: Couldn't set userinfo (socket)\n",
DROP_TYPE_GENERAL, 0 );
Com_DPrintf( "Connection from %s refused: couldn't set userinfo (socket)\n", NET_AddressToString( address ) );
return;
}
if( !Info_SetValueForKey( userinfo, "ip", NET_AddressToString( address ) ) )
{
Netchan_OutOfBandPrint( socket, address, "reject\n%i\n%i\nError: Couldn't set userinfo (ip)\n",
DROP_TYPE_GENERAL, 0 );
Com_DPrintf( "Connection from %s refused: couldn't set userinfo (ip)\n", NET_AddressToString( address ) );
return;
}
if( Cmd_Argc() >= 7 )
{
// we have extended information, ticket-id and session-id
Com_Printf("Extended information %s\n", Cmd_Argv(6) );
ticket_id = (unsigned int)atoi( Cmd_Argv(6) );
session_id_str = Info_ValueForKey( userinfo, "cl_mm_session" );
if( session_id_str != NULL )
session_id = atoi( session_id_str );
else
session_id = 0;
}
else
{
ticket_id = 0;
session_id = 0;
}
#ifdef TCP_ALLOW_CONNECT
if( socket->type == SOCKET_TCP )
{
// find the connection
for( i = 0; i < MAX_INCOMING_CONNECTIONS; i++ )
{
if( !svs.incoming[i].active )
continue;
if( NET_CompareAddress( &svs.incoming[i].address, address ) && socket == &svs.incoming[i].socket )
break;
}
if( i == MAX_INCOMING_CONNECTIONS )
{
Com_Error( ERR_FATAL, "Incoming connection not found.\n" );
return;
}
incoming = i;
}
#endif
// see if the challenge is valid
for( i = 0; i < MAX_CHALLENGES; i++ )
{
if( NET_CompareBaseAddress( address, &svs.challenges[i].adr ) )
{
if( challenge == svs.challenges[i].challenge )
{
svs.challenges[i].challenge = 0; // wsw : r1q2 : reset challenge
svs.challenges[i].time = 0;
NET_InitAddress( &svs.challenges[i].adr, NA_NOTRANSMIT );
break; // good
}
Netchan_OutOfBandPrint( socket, address, "reject\n%i\n%i\nBad challenge\n",
DROP_TYPE_GENERAL, DROP_FLAG_AUTORECONNECT );
return;
}
}
if( i == MAX_CHALLENGES )
{
Netchan_OutOfBandPrint( socket, address, "reject\n%i\n%i\nNo challenge for address\n",
DROP_TYPE_GENERAL, DROP_FLAG_AUTORECONNECT );
return;
}
//r1: limit connections from a single IP
if( sv_iplimit->integer )
{
previousclients = 0;
for( i = 0, cl = svs.clients; i < sv_maxclients->integer; i++, cl++ )
{
if( cl->state == CS_FREE )
continue;
if( NET_CompareBaseAddress( address, &cl->netchan.remoteAddress ) )
{
//r1: zombies are less dangerous
if( cl->state == CS_ZOMBIE )
previousclients++;
else
previousclients += 2;
}
}
if( previousclients >= sv_iplimit->integer * 2 )
{
Netchan_OutOfBandPrint( socket, address, "reject\n%i\n%i\nToo many connections from your host\n", DROP_TYPE_GENERAL,
DROP_FLAG_AUTORECONNECT );
Com_DPrintf( "%s:connect rejected : too many connections\n", NET_AddressToString( address ) );
return;
}
}
newcl = NULL;
// 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_CompareAddress( address, &cl->netchan.remoteAddress ) ||
( NET_CompareBaseAddress( address, &cl->netchan.remoteAddress ) && cl->netchan.game_port == game_port ) )
{
if( !NET_IsLocalAddress( address ) &&
( svs.realtime - cl->lastconnect ) < (unsigned)( sv_reconnectlimit->integer * 1000 ) )
{
Com_DPrintf( "%s:reconnect rejected : too soon\n", NET_AddressToString( address ) );
return;
}
Com_Printf( "%s:reconnect\n", NET_AddressToString( address ) );
newcl = cl;
break;
}
}
// find a client slot
if( !newcl )
{
for( i = 0, cl = svs.clients; i < sv_maxclients->integer; i++, cl++ )
{
if( cl->state == CS_FREE )
{
newcl = cl;
break;
}
// overwrite fakeclient if no free spots found
if( cl->state && cl->edict && ( cl->edict->r.svflags & SVF_FAKECLIENT ) )
newcl = cl;
}
if( !newcl )
{
Netchan_OutOfBandPrint( socket, address, "reject\n%i\n%i\nServer is full\n", DROP_TYPE_GENERAL,
DROP_FLAG_AUTORECONNECT );
Com_DPrintf( "Server is full. Rejected a connection.\n" );
return;
}
if( newcl->state && newcl->edict && ( newcl->edict->r.svflags & SVF_FAKECLIENT ) )
SV_DropClient( newcl, DROP_TYPE_GENERAL, "Need room for a real player" );
}
// get the game a chance to reject this connection or modify the userinfo
if( !SV_ClientConnect( socket, address, newcl, userinfo, game_port, challenge, qfalse,
tv_client, ticket_id, session_id ) )
{
char *rejtype, *rejflag, *rejtypeflag, *rejmsg;
rejtype = Info_ValueForKey( userinfo, "rejtype" );
if( !rejtype )
rejtype = "0";
rejflag = Info_ValueForKey( userinfo, "rejflag" );
if( !rejflag )
rejflag = "0";
// hax because Info_ValueForKey can only be called twice in a row
rejtypeflag = va( "%s\n%s", rejtype, rejflag );
rejmsg = Info_ValueForKey( userinfo, "rejmsg" );
if( !rejmsg )
rejmsg = "Game module rejected connection";
Netchan_OutOfBandPrint( socket, address, "reject\n%s\n%s\n", rejtypeflag, rejmsg );
Com_DPrintf( "Game rejected a connection.\n" );
return;
}
// send the connect packet to the client
Netchan_OutOfBandPrint( socket, address, "client_connect\n%s", newcl->session );
// free the incoming entry
#ifdef TCP_ALLOW_CONNECT
if( socket->type == SOCKET_TCP )
{
svs.incoming[incoming].active = qfalse;
svs.incoming[incoming].socket.open = qfalse;
}
#endif
}
/**
* Responds to a Steam server query.
*
* @param s query string
* @param socket response socket
* @param address response address
* @param inmsg message for arguments
* @return whether the request was handled as a Steam query
*/
bool SV_SteamServerQuery( const char *s, const socket_t *socket, const netadr_t *address, msg_t *inmsg )
{
#if APP_STEAMID
if( sv.state < ss_loading || sv.state > ss_game )
return false; // server not running
if( ( !sv_public->integer && !NET_IsLANAddress( address ) ) || ( sv_maxclients->integer == 1 ) )
return false;
if( !strcmp( s, "i" ) )
{
// ping
const char pingResponse[] = "j00000000000000";
Netchan_OutOfBand( socket, address, sizeof( pingResponse ), ( const uint8_t * )pingResponse );
return true;
}
if( !strcmp( s, "W" ) || !strcmp( s, "U\xFF\xFF\xFF\xFF" ) )
{
// challenge - security feature, but since we don't send multiple packets always return 0
const uint8_t challengeResponse[] = { 'A', 0, 0, 0, 0 };
Netchan_OutOfBand( socket, address, sizeof( challengeResponse ), ( const uint8_t * )challengeResponse );
return true;
}
if( !strcmp( s, "TSource Engine Query" ) )
{
// server info
char hostname[MAX_INFO_VALUE];
char gamedir[MAX_QPATH];
char gamename[128];
char version[32];
char tags[MAX_STEAMQUERY_TAG_STRING];
int i, players = 0, bots = 0, maxclients = 0;
int flags = 0x80 | 0x01; // game port | game ID containing app ID
client_t *cl;
msg_t msg;
uint8_t msgbuf[MAX_STEAMQUERY_PACKETLEN - sizeof( int32_t )];
if( sv_showInfoQueries->integer )
Com_Printf( "Steam Info Packet %s\n", NET_AddressToString( address ) );
Q_strncpyz( hostname, COM_RemoveColorTokens( sv_hostname->string ), sizeof( hostname ) );
if( !hostname[0] )
Q_strncpyz( hostname, sv_hostname->dvalue, sizeof( hostname ) );
Q_strncpyz( gamedir, FS_GameDirectory(), sizeof( gamedir ) );
Q_strncpyz( gamename, APPLICATION, sizeof( gamename ) );
if( Cvar_Value( "g_instagib" ) )
Q_strncatz( gamename, " IG", sizeof( gamename ) );
if( sv.configstrings[CS_GAMETYPETITLE][0] || sv.configstrings[CS_GAMETYPENAME][0] )
{
Q_strncatz( gamename, " ", sizeof( gamename ) );
Q_strncatz( gamename,
sv.configstrings[sv.configstrings[CS_GAMETYPETITLE][0] ? CS_GAMETYPETITLE : CS_GAMETYPENAME],
sizeof( gamename ) );
}
for( i = 0; i < sv_maxclients->integer; i++ )
{
cl = &svs.clients[i];
if( cl->state >= CS_CONNECTED )
{
if( cl->tvclient ) // exclude TV from the max players count
continue;
if( cl->edict->r.svflags & SVF_FAKECLIENT )
bots++;
players++;
}
maxclients++;
}
Q_snprintfz( version, sizeof( version ), "%i.%i.0.0", APP_VERSION_MAJOR, APP_VERSION_MINOR );
SV_GetSteamTags( tags );
if( tags[0] )
flags |= 0x20;
MSG_Init( &msg, msgbuf, sizeof( msgbuf ) );
MSG_WriteByte( &msg, 'I' );
MSG_WriteByte( &msg, APP_PROTOCOL_VERSION );
MSG_WriteString( &msg, hostname );
MSG_WriteString( &msg, sv.mapname );
MSG_WriteString( &msg, gamedir );
MSG_WriteString( &msg, gamename );
MSG_WriteShort( &msg, 0 ); // app ID specified later
MSG_WriteByte( &msg, min( players, 99 ) );
MSG_WriteByte( &msg, min( maxclients, 99 ) );
MSG_WriteByte( &msg, min( bots, 99 ) );
MSG_WriteByte( &msg, ( dedicated && dedicated->integer ) ? 'd' : 'l' );
MSG_WriteByte( &msg, STEAMQUERY_OS );
MSG_WriteByte( &msg, Cvar_String( "password" )[0] ? 1 : 0 );
MSG_WriteByte( &msg, 0 ); // VAC insecure
MSG_WriteString( &msg, version );
MSG_WriteByte( &msg, flags );
// port
MSG_WriteShort( &msg, sv_port->integer );
// tags
if( flags & 0x20 )
MSG_WriteString( &msg, tags );
// 64-bit game ID - needed to specify app ID
MSG_WriteLong( &msg, APP_STEAMID & 0xffffff );
MSG_WriteLong( &msg, 0 );
Netchan_OutOfBand( socket, address, msg.cursize, msg.data );
return true;
}
if( s[0] == 'U' )
{
// players
msg_t msg;
uint8_t msgbuf[MAX_STEAMQUERY_PACKETLEN - sizeof( int32_t )];
int i, players = 0;
client_t *cl;
char name[MAX_NAME_BYTES];
unsigned int time = Sys_Milliseconds();
if( sv_showInfoQueries->integer )
Com_Printf( "Steam Players Packet %s\n", NET_AddressToString( address ) );
MSG_Init( &msg, msgbuf, sizeof( msgbuf ) );
MSG_WriteByte( &msg, 'D' );
MSG_WriteByte( &msg, 0 );
for( i = 0; i < sv_maxclients->integer; i++ )
{
cl = &svs.clients[i];
if( ( cl->state < CS_CONNECTED ) || cl->tvclient )
continue;
Q_strncpyz( name, COM_RemoveColorTokens( cl->name ), sizeof( name ) );
if( ( msg.cursize + 10 + strlen( name ) ) > sizeof( msgbuf ) )
break;
MSG_WriteByte( &msg, i );
MSG_WriteString( &msg, name );
MSG_WriteLong( &msg, cl->edict->r.client->r.frags );
MSG_WriteFloat( &msg, ( float )( time - cl->lastconnect ) * 0.001f );
players++;
if( players == 99 )
break;
}
msgbuf[1] = players;
Netchan_OutOfBand( socket, address, msg.cursize, msg.data );
return true;
}
if( !strcmp( s, "s" ) )
{
// master server query, terminated by \n, followed by the challenge
int i;
bool fromMaster = false;
int challenge;
char gamedir[MAX_QPATH], basedir[MAX_QPATH], tags[MAX_STEAMQUERY_TAG_STRING];
int players = 0, bots = 0, maxclients = 0;
client_t *cl;
char msg[MAX_STEAMQUERY_PACKETLEN];
for( i = 0; i < MAX_MASTERS; i++ )
{
if( sv_masters[i].steam && NET_CompareAddress( address, &sv_masters[i].address ) )
{
fromMaster = true;
break;
}
}
if( !fromMaster )
return true;
if( sv_showInfoQueries->integer )
Com_Printf( "Steam Master Server Info Packet %s\n", NET_AddressToString( address ) );
challenge = MSG_ReadLong( inmsg );
Q_strncpyz( gamedir, FS_GameDirectory(), sizeof( gamedir ) );
Q_strncpyz( basedir, FS_BaseGameDirectory(), sizeof( basedir ) );
SV_GetSteamTags( tags );
for( i = 0; i < sv_maxclients->integer; i++ )
{
cl = &svs.clients[i];
if( cl->state >= CS_CONNECTED )
{
if( cl->tvclient ) // exclude TV from the max players count
continue;
if( cl->edict->r.svflags & SVF_FAKECLIENT )
bots++;
players++;
}
maxclients++;
}
Q_snprintfz( msg, sizeof( msg ),
"0\n\\protocol\\7\\challenge\\%i" // protocol must be 7 to match Source
"\\players\\%i\\max\\%i\\bots\\%i"
"\\gamedir\\%s\\map\\%s"
"\\password\\%i\\os\\%c"
"\\lan\\%i\\region\\255"
"%s%s"
"\\type\\%c\\secure\\0"
"\\version\\%i.%i.0.0"
"\\product\\%s\n",
challenge,
min( players, 99 ), min( maxclients, 99 ), min( bots, 99 ),
gamedir, sv.mapname,
Cvar_String( "password" )[0] ? 1 : 0, STEAMQUERY_OS,
sv_public->integer ? 0 : 1,
tags[0] ? "\\gametype\\" /* legacy - "gametype", not "tags" */ : "", tags,
( dedicated && dedicated->integer ) ? 'd' : 'l',
APP_VERSION_MAJOR, APP_VERSION_MINOR,
basedir );
NET_SendPacket( socket, ( const uint8_t * )msg, strlen( msg ), address );
return true;
}
if( s[0] == 'O' )
{
// out of date message
static bool printed = false;
if( !printed )
{
int i;
for( i = 0; i < MAX_MASTERS; i++ )
{
if( sv_masters[i].steam && NET_CompareAddress( address, &sv_masters[i].address ) )
{
Com_Printf( "Server is out of date and cannot be added to the Steam master servers.\n" );
printed = true;
return true;
}
}
}
return true;
}
#endif
return false;
}
/*
* TV_Downstream_DirectConnect
* A upstream request that did not come from the master
*/
static void TV_Downstream_DirectConnect( const socket_t *socket, const netadr_t *address )
{
#ifdef TCP_ALLOW_TVCONNECT
int incoming = 0;
#endif
char userinfo[MAX_INFO_STRING], *name;
client_t *cl, *newcl;
int i, version, game_port, challenge;
bool tv_client;
version = atoi( Cmd_Argv( 1 ) );
if( version != APP_PROTOCOL_VERSION )
{
if( version <= 6 )
{ // before reject packet was added
Netchan_OutOfBandPrint( socket, address, "print\nServer is version %4.2f. Protocol %3i\n",
APP_VERSION, APP_PROTOCOL_VERSION );
}
else
{
Netchan_OutOfBandPrint( socket, address,
"reject\n%i\n%i\nServer and client don't have the same version\n", DROP_TYPE_GENERAL, 0 );
}
return;
}
game_port = atoi( Cmd_Argv( 2 ) );
challenge = atoi( Cmd_Argv( 3 ) );
tv_client = ( atoi( Cmd_Argv( 5 ) ) & 1 ? true : false );
if( !Info_Validate( Cmd_Argv( 4 ) ) )
{
Netchan_OutOfBandPrint( socket, address, "reject\n%i\n%i\nInvalid userinfo string\n", DROP_TYPE_GENERAL, 0 );
Com_DPrintf( "Upstream from %s refused: invalid userinfo string\n", NET_AddressToString( address ) );
return;
}
Q_strncpyz( userinfo, Cmd_Argv( 4 ), sizeof( userinfo ) );
// force the IP key/value pair so the game can filter based on ip
if( !Info_SetValueForKey( userinfo, "socket", NET_SocketTypeToString( socket->type ) ) )
{
Netchan_OutOfBandPrint( socket, address, "reject\n%i\n%i\nError: Couldn't set userinfo (socket)\n",
DROP_TYPE_GENERAL, 0 );
Com_DPrintf( "Upstream from %s refused: couldn't set userinfo (socket)\n", NET_AddressToString( address ) );
return;
}
if( !Info_SetValueForKey( userinfo, "ip", NET_AddressToString( address ) ) )
{
Netchan_OutOfBandPrint( socket, address, "reject\n%i\n%i\nError: Couldn't set userinfo (ip)\n",
DROP_TYPE_GENERAL, 0 );
Com_DPrintf( "Upstream from %s refused: couldn't set userinfo (ip)\n", NET_AddressToString( address ) );
return;
}
// we handle name ourselves here, since tv module doesn't know about all the players
name = TV_Downstream_FixName( Info_ValueForKey( userinfo, "name" ), NULL );
if( !Info_SetValueForKey( userinfo, "name", name ) )
{
Netchan_OutOfBandPrint( socket, address, "reject\n%i\n%i\nError: Couldn't set userinfo (name)\n",
DROP_TYPE_GENERAL, 0 );
Com_DPrintf( "Upstream from %s refused: couldn't set userinfo (name)\n", NET_AddressToString( address ) );
return;
}
#ifdef TCP_ALLOW_TVCONNECT
if( socket->type == SOCKET_TCP )
{
// find the upstream
for( i = 0; i < MAX_INCOMING_CONNECTIONS; i++ )
{
if( !tvs.incoming[i].active )
continue;
if( NET_CompareAddress( &tvs.incoming[i].address, address ) && socket == &tvs.incoming[i].socket )
break;
}
if( i == MAX_INCOMING_CONNECTIONS )
{
Com_Error( ERR_FATAL, "Incoming upstream not found.\n" );
return;
}
incoming = i;
}
#endif
// see if the challenge is valid
for( i = 0; i < MAX_CHALLENGES; i++ )
{
if( NET_CompareBaseAddress( address, &tvs.challenges[i].adr ) )
{
if( challenge == tvs.challenges[i].challenge )
{
tvs.challenges[i].challenge = 0; // wsw : r1q2 : reset challenge
tvs.challenges[i].time = 0;
NET_InitAddress( &tvs.challenges[i].adr, NA_NOTRANSMIT );
break; // good
}
Netchan_OutOfBandPrint( socket, address, "reject\n%i\n%i\nBad challenge\n",
DROP_TYPE_GENERAL, DROP_FLAG_AUTORECONNECT );
return;
}
}
if( i == MAX_CHALLENGES )
{
Netchan_OutOfBandPrint( socket, address, "reject\n%i\n%i\nNo challenge for address\n",
DROP_TYPE_GENERAL, DROP_FLAG_AUTORECONNECT );
return;
}
newcl = NULL;
// if there is already a slot for this ip, reuse it
for( i = 0, cl = tvs.clients; i < tv_maxclients->integer; i++, cl++ )
{
if( cl->state == CS_FREE )
continue;
if( NET_CompareAddress( address, &cl->netchan.remoteAddress ) ||
( NET_CompareBaseAddress( address, &cl->netchan.remoteAddress ) && cl->netchan.game_port == game_port ) )
{
if( !NET_IsLocalAddress( address ) &&
( tvs.realtime - cl->lastconnect ) < (unsigned)( tv_reconnectlimit->integer * 1000 ) )
{
return;
}
newcl = cl;
break;
}
}
// find a client slot
if( !newcl )
{
for( i = 0, cl = tvs.clients; i < tv_maxclients->integer; i++, cl++ )
{
if( cl->state == CS_FREE )
{
newcl = cl;
break;
}
}
if( !newcl )
{
Netchan_OutOfBandPrint( socket, address, "reject\n%i\n%i\nServer is full\n", DROP_TYPE_GENERAL,
DROP_FLAG_AUTORECONNECT );
return;
}
}
// get the game a chance to reject this upstream or modify the userinfo
if( !TV_Downstream_ClientConnect( socket, address, newcl, userinfo, game_port, challenge, tv_client ) )
{
char *rejtypeflag, *rejmsg;
// hax because Info_ValueForKey can only be called twice in a row
rejtypeflag = va( "%s\n%s", Info_ValueForKey( userinfo, "rejtype" ), Info_ValueForKey( userinfo, "rejflag" ) );
rejmsg = Info_ValueForKey( userinfo, "rejmsg" );
Netchan_OutOfBandPrint( socket, address, "reject\n%s\n%s\n", rejtypeflag, rejmsg );
return;
}
// send the connect packet to the client
Netchan_OutOfBandPrint( socket, address, "client_connect" );
// free the incoming entry
#ifdef TCP_ALLOW_TVCONNECT
if( socket->type == SOCKET_TCP )
{
tvs.incoming[incoming].active = false;
tvs.incoming[incoming].socket.open = false;
}
#endif
}
static void FWD_network_update(void)
{
fd_set rfds;
struct timeval tv;
int retval;
int i1;
peer_t *p;
FD_ZERO(&rfds);
// select on main server socket
FD_SET(net_socket, &rfds);
i1 = net_socket + 1;
for (p = peers; p; p = p->next)
{
// select on peers sockets
FD_SET(p->s, &rfds);
if (p->s >= i1)
i1 = p->s + 1;
}
// if not DLL - read stdin
#ifndef APP_DLL
#ifndef _WIN32
// try read stdin only if connected to a terminal.
if (isatty(STDIN) && isatty(STDOUT))
{
FD_SET(STDIN, &rfds);
if (STDIN >= i1)
i1 = STDIN + 1;
}
#endif // _WIN32
#endif
/* Sleep for some time, wake up immidiately if there input packet. */
tv.tv_sec = 0;
tv.tv_usec = 100000; // 100 ms
retval = select(i1, &rfds, (fd_set *)0, (fd_set *)0, &tv);
// read console input.
// NOTE: we do not do that if we are in DLL mode...
Sys_ReadSTDIN(&ps, rfds);
if (retval <= 0)
return;
// if we have input packet on main server/proxy socket, then read it
if(FD_ISSET(net_socket, &rfds))
{
qbool connectionless;
int cnt;
// read it
for(;;)
{
if (!NET_GetPacket(net_socket, &net_message))
break;
// check for bans.
if (SV_IsBanned(&net_from))
continue;
if (net_message.cursize == 1 && net_message.data[0] == A2A_ACK)
{
QRY_SV_PingReply();
continue;
}
MSG_BeginReading();
connectionless = (MSG_ReadLong() == -1);
if (connectionless)
{
if (MSG_BadRead())
continue;
if (!SV_ConnectionlessPacket())
continue; // seems we do not need forward it
}
// search in peers
for (p = peers; p; p = p->next)
{
// we have this peer already, so forward/send packet to remote server
if (NET_CompareAddress(&p->from, &net_from))
break;
}
// peer was not found
if (!p)
continue;
// forward data to the server/proxy
if (p->ps >= ps_connected)
{
cnt = 1; // one packet by default
// check for "drop" aka client disconnect,
// first 10 bytes for NON connectionless packet is netchan related shit in QW
if (p->proto == pr_qw && !connectionless && net_message.cursize > 10 && net_message.data[10] == clc_stringcmd)
{
if (!strcmp((char*)net_message.data + 10 + 1, "drop"))
{
// Sys_Printf("peer drop detected\n");
p->ps = ps_drop; // drop peer ASAP
cnt = 3; // send few packets due to possibile packet lost
}
}
for ( ; cnt > 0; cnt--)
NET_SendPacket(p->s, net_message.cursize, net_message.data, &p->to);
}
time(&p->last);
}
}
// now lets check peers sockets, perhaps we have input packets too
for (p = peers; p; p = p->next)
{
if(FD_ISSET(p->s, &rfds))
{
// yeah, we have packet, read it then
for (;;)
{
if (!NET_GetPacket(p->s, &net_message))
break;
// check for bans.
if (SV_IsBanned(&net_from))
continue;
// we should check is this packet from remote server, this may be some evil packet from haxors...
if (!NET_CompareAddress(&p->to, &net_from))
continue;
MSG_BeginReading();
if (MSG_ReadLong() == -1)
{
if (MSG_BadRead())
continue;
if (!CL_ConnectionlessPacket(p))
continue; // seems we do not need forward it
NET_SendPacket(net_socket, net_message.cursize, net_message.data, &p->from);
continue;
}
if (p->ps >= ps_connected)
NET_SendPacket(net_socket, net_message.cursize, net_message.data, &p->from);
// qqshka: commented out
// time(&p->last);
} // for (;;)
} // if(FD_ISSET(p->s, &rfds))
if (p->ps == ps_challenge)
{
// send challenge time to time
if (time(NULL) - p->connect > 2)
{
p->connect = time(NULL);
Netchan_OutOfBandPrint(p->s, &p->to, "getchallenge%s", p->proto == pr_qw ? "\n" : "");
}
}
} // for (p = peers; p; p = p->next)
}
