/*
=================
CL_ReadNetMessage
=================
*/
void CL_ReadNetMessage( void )
{
size_t curSize;
while( CL_GetMessage( net_message_buffer, &curSize ))
{
BF_Init( &net_message, "ServerData", net_message_buffer, curSize );
// check for connectionless packet (0xffffffff) first
if( BF_GetMaxBytes( &net_message ) >= 4 && *(int *)net_message.pData == -1 )
{
CL_ConnectionlessPacket( net_from, &net_message );
continue;
}
// can't be a valid sequenced packet
if( cls.state < ca_connected ) continue;
if( BF_GetMaxBytes( &net_message ) < 8 )
{
MsgDev( D_WARN, "%s: runt packet\n", NET_AdrToString( net_from ));
continue;
}
// packet from server
if( !cls.demoplayback && !NET_CompareAdr( net_from, cls.netchan.remote_address ))
{
MsgDev( D_ERROR, "CL_ReadPackets: %s:sequenced packet without connection\n", NET_AdrToString( net_from ));
continue;
}
if( !cls.demoplayback && !Netchan_Process( &cls.netchan, &net_message ))
continue; // wasn't accepted for some reason
CL_ParseServerMessage( &net_message );
}
// check for fragmentation/reassembly related packets.
if( cls.state != ca_disconnected && Netchan_IncomingReady( &cls.netchan ))
{
// the header is different lengths for reliable and unreliable messages
int headerBytes = BF_GetNumBytesRead( &net_message );
// process the incoming buffer(s)
if( Netchan_CopyNormalFragments( &cls.netchan, &net_message ))
{
CL_ParseServerMessage( &net_message );
}
if( Netchan_CopyFileFragments( &cls.netchan, &net_message ))
{
// remove from resource request stuff.
CL_ProcessFile( true, cls.netchan.incomingfilename );
}
}
Netchan_UpdateProgress( &cls.netchan );
}
/*
=====================
CL_WriteMessageHistory
list last 32 messages for debugging net troubleshooting
=====================
*/
void CL_WriteMessageHistory( void )
{
int i, thecmd;
oldcmd_t *old, *failcommand;
sizebuf_t *msg = &net_message;
if( !cls.initialized || cls.state == ca_disconnected )
return;
if( !cls_message_debug.parsing )
return;
MsgDev( D_INFO, "Last %i messages parsed.\n", MSG_COUNT );
// finish here
thecmd = cls_message_debug.currentcmd - 1;
thecmd -= ( MSG_COUNT - 1 ); // back up to here
for( i = 0; i < MSG_COUNT - 1; i++ )
{
thecmd &= MSG_MASK;
old = &cls_message_debug.oldcmd[thecmd];
MsgDev( D_INFO,"%i %04i %s\n", old->frame_number, old->starting_offset, CL_MsgInfo( old->command ));
thecmd++;
}
failcommand = &cls_message_debug.oldcmd[thecmd];
MsgDev( D_INFO, "BAD: %3i:%s\n", BF_GetNumBytesRead( msg ) - 1, CL_MsgInfo( failcommand->command ));
if( host.developer >= 3 )
{
CL_WriteErrorMessage( BF_GetNumBytesRead( msg ) - 1, msg );
}
cls_message_debug.parsing = false;
}
/*
=====================
CL_ParseServerMessage
=====================
*/
void CL_ParseServerMessage( sizebuf_t *msg )
{
char *s;
int i, j, cmd;
int param1, param2;
int bufStart;
cls_message_debug.parsing = true; // begin parsing
starting_count = BF_GetNumBytesRead( msg ); // updates each frame
// parse the message
while( 1 )
{
if( BF_CheckOverflow( msg ))
{
Host_Error( "CL_ParseServerMessage: overflow!\n" );
return;
}
// mark start position
bufStart = BF_GetNumBytesRead( msg );
// end of message
if( BF_GetNumBitsLeft( msg ) < 8 )
break;
cmd = BF_ReadByte( msg );
// record command for debugging spew on parse problem
CL_Parse_RecordCommand( cmd, bufStart );
// other commands
switch( cmd )
{
case svc_bad:
Host_Error( "svc_bad\n" );
break;
case svc_nop:
// this does nothing
break;
case svc_disconnect:
MsgDev( D_INFO, "Disconnected from server\n" );
CL_Drop ();
Host_AbortCurrentFrame ();
break;
case svc_changing:
if( BF_ReadOneBit( msg ))
{
cls.changelevel = true;
S_StopAllSounds();
if( cls.demoplayback )
{
SCR_BeginLoadingPlaque( cl.background );
cls.changedemo = true;
}
}
else MsgDev( D_INFO, "Server disconnected, reconnecting\n" );
CL_ClearState ();
CL_InitEdicts (); // re-arrange edicts
if( cls.demoplayback )
{
cl.background = (cls.demonum != -1) ? true : false;
cls.state = ca_connected;
}
else cls.state = ca_connecting;
cls.connect_time = MAX_HEARTBEAT; // CL_CheckForResend() will fire immediately
break;
case svc_setview:
cl.refdef.viewentity = BF_ReadWord( msg );
break;
case svc_sound:
CL_ParseSoundPacket( msg, false );
break;
case svc_time:
// shuffle timestamps
cl.mtime[1] = cl.mtime[0];
cl.mtime[0] = BF_ReadFloat( msg );
break;
case svc_print:
i = BF_ReadByte( msg );
MsgDev( D_INFO, "^6%s", BF_ReadString( msg ));
if( i == PRINT_CHAT ) S_StartLocalSound( "common/menu2.wav", VOL_NORM, false );
break;
case svc_stufftext:
CL_ParseStuffText( msg );
break;
case svc_lightstyle:
CL_ParseLightStyle( msg );
break;
case svc_setangle:
CL_ParseSetAngle( msg );
break;
case svc_serverdata:
Cbuf_Execute(); // make sure any stuffed commands are done
CL_ParseServerData( msg );
break;
case svc_addangle:
CL_ParseAddAngle( msg );
break;
case svc_clientdata:
CL_ParseClientData( msg );
break;
case svc_packetentities:
CL_ParsePacketEntities( msg, false );
break;
case svc_deltapacketentities:
CL_ParsePacketEntities( msg, true );
break;
case svc_updatepings:
CL_UpdateUserPings( msg );
break;
case svc_usermessage:
CL_RegisterUserMessage( msg );
break;
case svc_particle:
CL_ParseParticles( msg );
break;
case svc_restoresound:
CL_ParseRestoreSoundPacket( msg );
break;
case svc_spawnstatic:
CL_ParseStaticEntity( msg );
break;
case svc_ambientsound:
CL_ParseSoundPacket( msg, true );
break;
case svc_crosshairangle:
CL_ParseCrosshairAngle( msg );
break;
case svc_spawnbaseline:
CL_ParseBaseline( msg );
break;
case svc_temp_entity:
CL_ParseTempEntity( msg );
break;
case svc_setpause:
cl.refdef.paused = ( BF_ReadOneBit( msg ) != 0 );
break;
case svc_deltamovevars:
CL_ParseMovevars( msg );
break;
case svc_customization:
CL_ParseCustomization( msg );
break;
case svc_centerprint:
CL_CenterPrint( BF_ReadString( msg ), 0.25f );
break;
case svc_event:
CL_ParseEvent( msg );
break;
case svc_event_reliable:
CL_ParseReliableEvent( msg );
break;
case svc_updateuserinfo:
CL_UpdateUserinfo( msg );
break;
case svc_intermission:
cl.refdef.intermission = true;
break;
case svc_modelindex:
CL_PrecacheModel( msg );
break;
case svc_soundindex:
CL_PrecacheSound( msg );
break;
case svc_soundfade:
CL_ParseSoundFade( msg );
break;
case svc_cdtrack:
param1 = BF_ReadByte( msg );
param1 = bound( 1, param1, MAX_CDTRACKS ); // tracknum
param2 = BF_ReadByte( msg );
param2 = bound( 1, param2, MAX_CDTRACKS ); // loopnum
S_StartBackgroundTrack( clgame.cdtracks[param1-1], clgame.cdtracks[param2-1], 0 );
break;
case svc_serverinfo:
CL_ServerInfo( msg );
break;
case svc_eventindex:
CL_PrecacheEvent( msg );
break;
case svc_deltatable:
Delta_ParseTableField( msg );
break;
case svc_weaponanim:
param1 = BF_ReadByte( msg ); // iAnim
param2 = BF_ReadByte( msg ); // body
CL_WeaponAnim( param1, param2 );
break;
case svc_bspdecal:
CL_ParseStaticDecal( msg );
break;
case svc_roomtype:
param1 = BF_ReadShort( msg );
Cvar_SetFloat( "room_type", param1 );
break;
case svc_chokecount:
i = BF_ReadByte( msg );
j = cls.netchan.incoming_acknowledged - 1;
for( ; i > 0 && j > cls.netchan.outgoing_sequence - CL_UPDATE_BACKUP; j-- )
{
if( cl.frames[j & CL_UPDATE_MASK].receivedtime != -3.0 )
{
cl.frames[j & CL_UPDATE_MASK].receivedtime = -2.0;
i--;
}
}
break;
case svc_resourcelist:
CL_ParseResourceList( msg );
break;
case svc_director:
CL_ParseDirector( msg );
break;
case svc_studiodecal:
CL_ParseStudioDecal( msg );
break;
case svc_querycvarvalue:
CL_ParseCvarValue( msg );
break;
case svc_querycvarvalue2:
CL_ParseCvarValue2( msg );
break;
default:
CL_ParseUserMessage( msg, cmd );
break;
}
}
cls_message_debug.parsing = false; // done
// we don't know if it is ok to save a demo message until
// after we have parsed the frame
if( !cls.demoplayback )
{
if( cls.demorecording && !cls.demowaiting )
{
CL_WriteDemoMessage( false, starting_count, msg );
}
else if( cls.state != ca_active )
{
CL_WriteDemoMessage( true, starting_count, msg );
}
}
}
/*
==============================
Netchan_CopyFileFragments
==============================
*/
qboolean Netchan_CopyFileFragments( netchan_t *chan, sizebuf_t *msg )
{
fragbuf_t *p, *n;
char filename[CS_SIZE];
int nsize;
byte *buffer;
int pos;
if( !chan->incomingready[FRAG_FILE_STREAM] )
return false;
if( !chan->incomingbufs[FRAG_FILE_STREAM] )
{
MsgDev( D_WARN, "Netchan_CopyFileFragments: Called with no fragments readied\n" );
chan->incomingready[FRAG_FILE_STREAM] = false;
return false;
}
p = chan->incomingbufs[FRAG_FILE_STREAM];
BF_Init( msg, "NetMessage", net_message_buffer, sizeof( net_message_buffer ));
// copy in first chunk so we can get filename out
BF_WriteBits( msg, BF_GetData( &p->frag_message ), BF_GetNumBitsWritten( &p->frag_message ));
BF_SeekToBit( msg, 0 ); // rewind buffer
//Q_strncpy( filename, BF_ReadString( msg ), sizeof( filename ));
Q_snprintf( filename, sizeof( filename ), "downloaded/%s", BF_ReadString( msg ) );
if( Q_strlen( filename ) <= 0 )
{
MsgDev( D_ERROR, "File fragment received with no filename\nFlushing input queue\n" );
// clear out bufs
Netchan_FlushIncoming( chan, FRAG_FILE_STREAM );
return false;
}
else if( Q_strstr( filename, ".." ))
{
MsgDev( D_ERROR, "File fragment received with relative path, ignoring\n" );
// clear out bufs
Netchan_FlushIncoming( chan, FRAG_FILE_STREAM );
return false;
}
Q_strncpy( chan->incomingfilename, filename, sizeof( chan->incomingfilename ));
if( FS_FileExists( filename, false ))
{
MsgDev( D_ERROR, "Can't download %s, already exists\n", filename );
// clear out bufs
Netchan_FlushIncoming( chan, FRAG_FILE_STREAM );
return true;
}
// create file from buffers
nsize = 0;
while ( p )
{
nsize += BF_GetNumBytesWritten( &p->frag_message ); // Size will include a bit of slop, oh well
if( p == chan->incomingbufs[FRAG_FILE_STREAM] )
{
nsize -= BF_GetNumBytesRead( msg );
}
p = p->next;
}
buffer = Mem_Alloc( net_mempool, nsize + 1 );
p = chan->incomingbufs[ FRAG_FILE_STREAM ];
pos = 0;
while( p )
{
int cursize;
n = p->next;
cursize = BF_GetNumBytesWritten( &p->frag_message );
// first message has the file name, don't write that into the data stream,
// just write the rest of the actual data
if( p == chan->incomingbufs[FRAG_FILE_STREAM] )
{
// copy it in
cursize -= BF_GetNumBytesRead( msg );
Q_memcpy( &buffer[pos], &p->frag_message.pData[BF_GetNumBytesRead( msg )], cursize );
}
else
{
Q_memcpy( &buffer[pos], p->frag_message.pData, cursize );
}
pos += cursize;
Mem_Free( p );
p = n;
}
FS_WriteFile( filename, buffer, pos );
Mem_Free( buffer );
// clear remnants
BF_Clear( msg );
chan->incomingbufs[FRAG_FILE_STREAM] = NULL;
// reset flag
chan->incomingready[FRAG_FILE_STREAM] = false;
return true;
}
