176 lines
4.3 KiB
C++
176 lines
4.3 KiB
C++
//Anything above this #include will be ignored by the compiler
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#include "../qcommon/exe_headers.h"
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#include "client.h"
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// TTimo: unused, commenting out to make gcc happy
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#if 1
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/*
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==============
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CL_Netchan_Encode
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// first 12 bytes of the data are always:
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long serverId;
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long messageAcknowledge;
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long reliableAcknowledge;
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==============
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*/
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static void CL_Netchan_Encode( msg_t *msg ) {
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#ifdef _XBOX
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return;
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#endif
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int serverId, messageAcknowledge, reliableAcknowledge;
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int i, index, srdc, sbit, soob;
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byte key, *string;
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if ( msg->cursize <= CL_ENCODE_START ) {
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return;
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}
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srdc = msg->readcount;
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sbit = msg->bit;
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soob = msg->oob;
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msg->bit = 0;
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msg->readcount = 0;
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msg->oob = (qboolean)0;
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serverId = MSG_ReadLong(msg);
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messageAcknowledge = MSG_ReadLong(msg);
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reliableAcknowledge = MSG_ReadLong(msg);
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msg->oob = (qboolean)soob;
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msg->bit = sbit;
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msg->readcount = srdc;
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string = (byte *)clc.serverCommands[ reliableAcknowledge & (MAX_RELIABLE_COMMANDS-1) ];
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index = 0;
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//
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key = clc.challenge ^ serverId ^ messageAcknowledge;
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for (i = CL_ENCODE_START; i < msg->cursize; i++) {
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// modify the key with the last received now acknowledged server command
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if (!string[index])
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index = 0;
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if (/*string[index] > 127 || */ // eurofix: remove this so we can chat in european languages... -ste
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string[index] == '%')
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{
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key ^= '.' << (i & 1);
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}
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else {
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key ^= string[index] << (i & 1);
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}
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index++;
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// encode the data with this key
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*(msg->data + i) = (*(msg->data + i)) ^ key;
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}
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}
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/*
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==============
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CL_Netchan_Decode
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// first four bytes of the data are always:
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long reliableAcknowledge;
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==============
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*/
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static void CL_Netchan_Decode( msg_t *msg ) {
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#ifdef _XBOX
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return;
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#endif
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long reliableAcknowledge, i, index;
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byte key, *string;
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int srdc, sbit, soob;
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srdc = msg->readcount;
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sbit = msg->bit;
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soob = msg->oob;
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msg->oob = (qboolean)0;
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reliableAcknowledge = MSG_ReadLong(msg);
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msg->oob = (qboolean)soob;
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msg->bit = sbit;
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msg->readcount = srdc;
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string = (unsigned char *)clc.reliableCommands[ reliableAcknowledge & (MAX_RELIABLE_COMMANDS-1) ];
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index = 0;
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// xor the client challenge with the netchan sequence number (need something that changes every message)
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key = clc.challenge ^ LittleLong( *(unsigned *)msg->data );
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for (i = msg->readcount + CL_DECODE_START; i < msg->cursize; i++) {
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// modify the key with the last sent and with this message acknowledged client command
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if (!string[index])
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index = 0;
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if (/*string[index] > 127 || */ // eurofix: remove this so we can chat in european languages... -ste
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string[index] == '%')
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{
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key ^= '.' << (i & 1);
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}
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else {
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key ^= string[index] << (i & 1);
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}
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index++;
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// decode the data with this key
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*(msg->data + i) = *(msg->data + i) ^ key;
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}
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}
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#endif
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/*
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=================
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CL_Netchan_TransmitNextFragment
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=================
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*/
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void CL_Netchan_TransmitNextFragment( netchan_t *chan ) {
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Netchan_TransmitNextFragment( chan );
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}
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//byte chksum[65536];
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/*
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===============
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CL_Netchan_Transmit
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================
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*/
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void CL_Netchan_Transmit( netchan_t *chan, msg_t* msg ) {
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// int i;
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MSG_WriteByte( msg, clc_EOF );
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// for(i=CL_ENCODE_START;i<msg->cursize;i++) {
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// chksum[i-CL_ENCODE_START] = msg->data[i];
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// }
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// Huff_Compress( msg, CL_ENCODE_START );
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CL_Netchan_Encode( msg );
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Netchan_Transmit( chan, msg->cursize, msg->data );
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}
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extern int oldsize;
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int newsize = 0;
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/*
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=================
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CL_Netchan_Process
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=================
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*/
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qboolean CL_Netchan_Process( netchan_t *chan, msg_t *msg ) {
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int ret;
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// int i;
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// static int newsize = 0;
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ret = Netchan_Process( chan, msg );
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if (!ret)
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return qfalse;
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CL_Netchan_Decode( msg );
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// Huff_Decompress( msg, CL_DECODE_START );
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// for(i=CL_DECODE_START+msg->readcount;i<msg->cursize;i++) {
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// if (msg->data[i] != chksum[i-(CL_DECODE_START+msg->readcount)]) {
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// Com_Error(ERR_DROP,"bad %d v %d\n", msg->data[i], chksum[i-(CL_DECODE_START+msg->readcount)]);
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// }
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// }
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newsize += msg->cursize;
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// Com_Printf("saved %d to %d (%d%%)\n", (oldsize>>3), newsize, 100-(newsize*100/(oldsize>>3)));
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return qtrue;
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}
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