Cyd
2b8ca921cb
Complete disaster-recovery snapshot: engine/game source, game data assets, VC6 toolchain + DX SDKs, build outputs, deployed game, and _UNUSED archive. Large binaries in Git LFS; text preserved byte-for-byte (core.autocrlf=false, no eol attributes). See RECOVERY.md for the one-clone rebuild procedure.
95 lines
2.2 KiB
C++
95 lines
2.2 KiB
C++
#include "AdeptHeaders.hpp"
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#include "GameSpy.h"
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/******
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gutil.c
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GameSpy C Engine SDK
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Copyright 1999 GameSpy Industries, Inc
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Suite E-204
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2900 Bristol Street
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Costa Mesa, CA 92626
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(714)549-7689
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Fax(714)549-0757
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******/
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#include "gutil.h"
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#ifndef _GUTIL
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#define _GUTIL
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/*****************************************************************************/
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/* Various encryption / encoding routines */
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void swap_byte ( uchar *a, uchar *b )
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{
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uchar swapByte;
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swapByte = *a;
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*a = *b;
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*b = swapByte;
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}
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uchar encode_ct ( uchar c )
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{
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if (c < 26) return (uchar)('A'+c);
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if (c < 52) return (uchar)('a'+c-26);
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if (c < 62) return (uchar)('0'+c-52);
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if (c == 62) return (uchar)('+');
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if (c == 63) return (uchar)('/');
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return 0;
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}
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void gs_encode ( uchar *ins, int size, uchar *result )
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{
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int i,pos;
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uchar trip[3];
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uchar kwart[4];
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i=0;
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while (i < size)
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{
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for (pos=0 ; pos <= 2 ; pos++, i++)
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if (i < size) trip[pos] = *ins++;
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else trip[pos] = '\0';
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kwart[0] = (uchar)( (trip[0]) >> 2);
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kwart[1] = (uchar)((((trip[0]) & 3) << 4) + ((trip[1]) >> 4));
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kwart[2] = (uchar)((((trip[1]) & 15) << 2) + ((trip[2]) >> 6));
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kwart[3] = (uchar)( (trip[2]) & 63);
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for (pos=0; pos <= 3; pos++) *result++ = encode_ct(kwart[pos]);
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}
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*result='\0';
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}
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void gs_encrypt ( uchar *key, int key_len, uchar *buffer_ptr, int buffer_len )
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{
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short counter;
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uchar x, y, xorIndex;
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uchar state[256];
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for ( counter = 0; counter < 256; counter++) state[counter] = (uchar) counter;
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x = 0; y = 0;
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for ( counter = 0; counter < 256; counter++)
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{
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y = (uchar)((key[x] + state[counter] + y) % 256);
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x = (uchar)((x + 1) % key_len);
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swap_byte ( &state[counter], &state[y] );
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}
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x = 0; y = 0;
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for ( counter = 0; counter < buffer_len; counter ++)
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{
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x = (uchar)((x + buffer_ptr[counter] + 1) % 256);
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y = (uchar)((state[x] + y) % 256);
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swap_byte ( &state[x], &state[y] );
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xorIndex = (uchar)((state[x] + state[y]) % 256);
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buffer_ptr[counter] ^= state[xorIndex];
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}
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}
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/*****************************************************************************/
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#endif |