mirror of
https://github.com/FWGS/xash3d-fwgs
synced 2024-12-23 09:16:04 +01:00
engine: client: implement errormsg, secure client by checking server IP address we're connected to
This commit is contained in:
parent
4e4a9827b1
commit
9662ab106f
@ -1154,6 +1154,7 @@ void CL_StopPlayback( void )
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// let game known about demo state
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Cvar_FullSet( "cl_background", "0", FCVAR_READ_ONLY );
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cls.state = ca_disconnected;
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memset( &cls.serveradr, 0, sizeof( cls.serveradr ) );
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cls.set_lastdemo = false;
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S_StopBackgroundTrack();
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cls.connect_time = 0;
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@ -503,6 +503,13 @@ void UI_AddTouchButtonToList( const char *name, const char *texture, const char
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}
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}
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/*
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=================
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UI_ResetPing
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notify gameui dll about latency reset
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=================
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*/
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void UI_ResetPing( void )
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{
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if( gameui.dllFuncs2.pfnResetPing )
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@ -511,11 +518,62 @@ void UI_ResetPing( void )
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}
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}
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/*
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=================
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UI_ShowConnectionWarning
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show connection warning dialog implemented by gameui dll
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=================
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*/
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void UI_ShowConnectionWarning( void )
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{
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if( gameui.dllFuncs2.pfnShowConnectionWarning )
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if( cls.state != ca_connected )
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return;
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if( Host_IsLocalClient() )
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return;
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if( ++cl.lostpackets == 8 )
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{
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gameui.dllFuncs2.pfnShowConnectionWarning();
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CL_Disconnect();
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if( gameui.dllFuncs2.pfnShowConnectionWarning )
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{
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gameui.dllFuncs2.pfnShowConnectionWarning();
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}
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Con_DPrintf( S_WARN "Too many lost packets! Showing Network options menu\n" );
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}
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}
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/*
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=================
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UI_ShowConnectionWarning
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show update dialog
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=================
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*/
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void UI_ShowUpdateDialog( qboolean preferStore )
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{
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if( gameui.dllFuncs2.pfnShowUpdateDialog )
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{
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gameui.dllFuncs2.pfnShowUpdateDialog( preferStore );
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}
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Con_Printf( S_WARN "This version is not supported anymore. To continue, install latest engine version\n" );
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}
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/*
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=================
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UI_ShowConnectionWarning
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show message box
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=================
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*/
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void UI_ShowMessageBox( const char *text )
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{
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if( gameui.dllFuncs2.pfnShowMessageBox )
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{
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gameui.dllFuncs2.pfnShowMessageBox( text );
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}
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}
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@ -1098,6 +1098,8 @@ void CL_CheckForResend( void )
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cls.signon = 0;
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cls.state = ca_connecting;
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Q_strncpy( cls.servername, "localhost", sizeof( cls.servername ));
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cls.serveradr.type = NA_LOOPBACK;
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// we don't need a challenge on the localhost
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CL_SendConnectPacket();
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return;
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@ -1150,6 +1152,7 @@ void CL_CheckForResend( void )
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return;
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}
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cls.serveradr = adr;
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cls.max_fragment_size = Q_max( FRAGMENT_MAX_SIZE, cls.max_fragment_size >> Q_min( 1, cls.connect_retry ));
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cls.connect_time = host.realtime; // for retransmit requests
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cls.connect_retry++;
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@ -1501,6 +1504,7 @@ void CL_Disconnect( void )
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IN_LockInputDevices( false ); // unlock input devices
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cls.state = ca_disconnected;
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memset( &cls.serveradr, 0, sizeof( cls.serveradr ) );
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cls.set_lastdemo = false;
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cls.connect_retry = 0;
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cls.signon = 0;
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@ -1858,6 +1862,19 @@ void CL_SetupOverviewParams( void )
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}
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}
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/*
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=================
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CL_IsFromConnectingServer
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Used for connectionless packets, when netchan may not be ready.
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=================
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*/
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static qboolean CL_IsFromConnectingServer( netadr_t from )
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{
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return NET_IsLocalAddress( from ) ||
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NET_CompareAdr( cls.serveradr, from );
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}
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/*
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=================
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CL_ConnectionlessPacket
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@ -1887,6 +1904,9 @@ void CL_ConnectionlessPacket( netadr_t from, sizebuf_t *msg )
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// server connection
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if( !Q_strcmp( c, "client_connect" ))
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{
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if( !CL_IsFromConnectingServer( from ))
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return;
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if( cls.state == ca_connected )
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{
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Con_DPrintf( S_ERROR "dup connect received. ignored\n");
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@ -1927,21 +1947,19 @@ void CL_ConnectionlessPacket( netadr_t from, sizebuf_t *msg )
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// print command from somewhere
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Con_Printf( "%s", MSG_ReadString( msg ));
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}
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else if( !Q_strcmp( c, "errormsg" ))
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{
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args = MSG_ReadString( msg );
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if( !Q_strcmp( args, "Server uses protocol version 48.\n" ))
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{
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cls.legacyserver = from;
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}
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}
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else if( !Q_strcmp( c, "testpacket" ))
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{
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byte recv_buf[NET_MAX_FRAGMENT];
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dword crcValue = MSG_ReadLong( msg );
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int realsize = MSG_GetMaxBytes( msg ) - MSG_GetNumBytesRead( msg );
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dword crcValue;
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int realsize;
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dword crcValue2 = 0;
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if( !CL_IsFromConnectingServer( from ))
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return;
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crcValue = MSG_ReadLong( msg );
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realsize = MSG_GetMaxBytes( msg ) - MSG_GetNumBytesRead( msg );
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if( cls.max_fragment_size != MSG_GetMaxBytes( msg ))
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{
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if( cls.connect_retry >= CL_TEST_RETRIES )
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@ -1999,6 +2017,9 @@ void CL_ConnectionlessPacket( netadr_t from, sizebuf_t *msg )
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}
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else if( !Q_strcmp( c, "challenge" ))
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{
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if( !CL_IsFromConnectingServer( from ))
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return;
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// challenge from the server we are connecting to
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cls.challenge = Q_atoi( Cmd_Argv( 1 ));
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CL_SendConnectPacket();
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@ -2006,11 +2027,17 @@ void CL_ConnectionlessPacket( netadr_t from, sizebuf_t *msg )
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}
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else if( !Q_strcmp( c, "echo" ))
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{
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if( !CL_IsFromConnectingServer( from ))
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return;
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// echo request from server
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Netchan_OutOfBandPrint( NS_CLIENT, from, "%s", Cmd_Argv( 1 ));
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}
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else if( !Q_strcmp( c, "disconnect" ))
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{
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if( !CL_IsFromConnectingServer( from ))
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return;
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// a disconnect message from the server, which will happen if the server
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// dropped the connection but it is still getting packets from us
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CL_Disconnect_f();
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@ -2021,6 +2048,48 @@ void CL_ConnectionlessPacket( netadr_t from, sizebuf_t *msg )
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memset( &cls.legacyserver, 0, sizeof( cls.legacyserver ));
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}
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}
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else if( !Q_strcmp( c, "errormsg" ))
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{
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if( !CL_IsFromConnectingServer( from ))
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return;
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args = MSG_ReadString( msg );
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if( !Q_strcmp( args, "Server uses protocol version 48.\n" ))
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{
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cls.legacyserver = from;
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}
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else
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{
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if( UI_IsVisible() )
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UI_ShowMessageBox( va("^3Server message^7\n%s", args ) );
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Msg( "%s", args );
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}
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}
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else if( !Q_strcmp( c, "updatemsg" ))
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{
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// got an update message from master server
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// show update dialog from menu
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netadr_t adr;
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qboolean preferStore = true;
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if( !Q_strcmp( Cmd_Argv( 1 ), "nostore" ) )
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preferStore = false;
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// trust only hardcoded master server
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if( NET_StringToAdr( MASTERSERVER_ADR, &adr ) )
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{
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if( NET_CompareAdr( from, adr ))
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{
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UI_ShowUpdateDialog( preferStore );
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}
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}
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else
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{
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// in case we don't have master anymore
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UI_ShowUpdateDialog( preferStore );
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}
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}
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else if( !Q_strcmp( c, "f" ))
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{
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// serverlist got from masterserver
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@ -2713,28 +2782,6 @@ void CL_Escape_f( void )
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else UI_SetActiveMenu( true );
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}
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/*
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=================
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CL_WarnLostSplitPacket
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=================
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*/
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void CL_WarnLostSplitPacket( void )
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{
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if( cls.state != ca_connected )
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return;
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if( Host_IsLocalClient() )
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return;
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if( ++cl.lostpackets == 8 )
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{
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CL_Disconnect();
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UI_ShowConnectionWarning();
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Con_DPrintf( S_WARN "Too many lost packets! Showing Network options menu\n" );
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}
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}
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/*
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=================
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CL_InitLocal
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@ -2744,6 +2791,7 @@ void CL_InitLocal( void )
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{
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cls.state = ca_disconnected;
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cls.signon = 0;
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memset( &cls.serveradr, 0, sizeof( cls.serveradr ) );
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cl.resourcesneeded.pNext = cl.resourcesneeded.pPrev = &cl.resourcesneeded;
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cl.resourcesonhand.pNext = cl.resourcesonhand.pPrev = &cl.resourcesonhand;
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@ -618,11 +618,15 @@ typedef struct
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file_t *demoheader; // contain demo startup info in case we record a demo on this level
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qboolean internetservers_wait; // internetservers is waiting for dns request
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qboolean internetservers_pending; // internetservers is waiting for dns request
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// legacy mode support
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qboolean legacymode; // one-way 48 protocol compatibility
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netadr_t legacyserver;
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netadr_t legacyservers[MAX_LEGACY_SERVERS];
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int legacyservercount;
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int extensions;
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netadr_t serveradr;
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} client_static_t;
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#ifdef __cplusplus
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@ -1075,7 +1079,8 @@ void UI_CharEvent( int key );
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qboolean UI_MouseInRect( void );
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qboolean UI_IsVisible( void );
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void UI_ResetPing( void );
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void UI_ShowConnectionWarning( void );
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void UI_ShowUpdateDialog( qboolean preferStore );
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void UI_ShowMessageBox( const char *text );
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void UI_AddTouchButtonToList( const char *name, const char *texture, const char *command, unsigned char *color, int flags );
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void pfnPIC_Set( HIMAGE hPic, int r, int g, int b, int a );
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void pfnPIC_Draw( int x, int y, int width, int height, const wrect_t *prc );
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@ -851,7 +851,6 @@ qboolean CL_IsInConsole( void );
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qboolean CL_IsThirdPerson( void );
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qboolean CL_IsIntermission( void );
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qboolean CL_Initialized( void );
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void CL_WarnLostSplitPacket( void );
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char *CL_Userinfo( void );
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void CL_LegacyUpdateInfo( void );
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void CL_CharEvent( int key );
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@ -952,6 +951,7 @@ void GL_FreeImage( const char *name );
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void VID_InitDefaultResolution( void );
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void VID_Init( void );
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void UI_SetActiveMenu( qboolean fActive );
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void UI_ShowConnectionWarning( void );
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void Cmd_Null_f( void );
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// soundlib shared exports
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@ -327,7 +327,7 @@ void CL_ClearStaticEntities( void )
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}
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void CL_WarnLostSplitPacket( void )
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void UI_ShowConnectionWarning( void )
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{
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}
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@ -140,7 +140,7 @@ qboolean NetSplit_GetLong( netsplit_t *ns, netadr_t *from, byte *data, size_t *l
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// warn if previous packet not received
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if( p->received < p->count )
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{
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CL_WarnLostSplitPacket();
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UI_ShowConnectionWarning();
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Con_Reportf( S_WARN "NetSplit_GetLong: lost packet %d\n", p->id );
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}
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