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crc32.cpp
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// MaxiM: Ported, not changed
#include "partoss.h"
#include "globext.h"
#include "crc32.h"
#include "lowlevel.h"
unsigned long cr3tab[256] = { /* CRC polynomial 0xedb88320 */
0x00000000ul, 0x77073096ul, 0xee0e612cul, 0x990951baul, 0x076dc419ul,
0x706af48ful, 0xe963a535ul, 0x9e6495a3ul,
0x0edb8832ul, 0x79dcb8a4ul, 0xe0d5e91eul, 0x97d2d988ul, 0x09b64c2bul,
0x7eb17cbdul, 0xe7b82d07ul, 0x90bf1d91ul,
0x1db71064ul, 0x6ab020f2ul, 0xf3b97148ul, 0x84be41deul, 0x1adad47dul,
0x6ddde4ebul, 0xf4d4b551ul, 0x83d385c7ul,
0x136c9856ul, 0x646ba8c0ul, 0xfd62f97aul, 0x8a65c9ecul, 0x14015c4ful,
0x63066cd9ul, 0xfa0f3d63ul, 0x8d080df5ul,
0x3b6e20c8ul, 0x4c69105eul, 0xd56041e4ul, 0xa2677172ul, 0x3c03e4d1ul,
0x4b04d447ul, 0xd20d85fdul, 0xa50ab56bul,
0x35b5a8faul, 0x42b2986cul, 0xdbbbc9d6ul, 0xacbcf940ul, 0x32d86ce3ul,
0x45df5c75ul, 0xdcd60dcful, 0xabd13d59ul,
0x26d930acul, 0x51de003aul, 0xc8d75180ul, 0xbfd06116ul, 0x21b4f4b5ul,
0x56b3c423ul, 0xcfba9599ul, 0xb8bda50ful,
0x2802b89eul, 0x5f058808ul, 0xc60cd9b2ul, 0xb10be924ul, 0x2f6f7c87ul,
0x58684c11ul, 0xc1611dabul, 0xb6662d3dul,
0x76dc4190ul, 0x01db7106ul, 0x98d220bcul, 0xefd5102aul, 0x71b18589ul,
0x06b6b51ful, 0x9fbfe4a5ul, 0xe8b8d433ul,
0x7807c9a2ul, 0x0f00f934ul, 0x9609a88eul, 0xe10e9818ul, 0x7f6a0dbbul,
0x086d3d2dul, 0x91646c97ul, 0xe6635c01ul,
0x6b6b51f4ul, 0x1c6c6162ul, 0x856530d8ul, 0xf262004eul, 0x6c0695edul,
0x1b01a57bul, 0x8208f4c1ul, 0xf50fc457ul,
0x65b0d9c6ul, 0x12b7e950ul, 0x8bbeb8eaul, 0xfcb9887cul, 0x62dd1ddful,
0x15da2d49ul, 0x8cd37cf3ul, 0xfbd44c65ul,
0x4db26158ul, 0x3ab551ceul, 0xa3bc0074ul, 0xd4bb30e2ul, 0x4adfa541ul,
0x3dd895d7ul, 0xa4d1c46dul, 0xd3d6f4fbul,
0x4369e96aul, 0x346ed9fcul, 0xad678846ul, 0xda60b8d0ul, 0x44042d73ul,
0x33031de5ul, 0xaa0a4c5ful, 0xdd0d7cc9ul,
0x5005713cul, 0x270241aaul, 0xbe0b1010ul, 0xc90c2086ul, 0x5768b525ul,
0x206f85b3ul, 0xb966d409ul, 0xce61e49ful,
0x5edef90eul, 0x29d9c998ul, 0xb0d09822ul, 0xc7d7a8b4ul, 0x59b33d17ul,
0x2eb40d81ul, 0xb7bd5c3bul, 0xc0ba6cadul,
0xedb88320ul, 0x9abfb3b6ul, 0x03b6e20cul, 0x74b1d29aul, 0xead54739ul,
0x9dd277aful, 0x04db2615ul, 0x73dc1683ul,
0xe3630b12ul, 0x94643b84ul, 0x0d6d6a3eul, 0x7a6a5aa8ul, 0xe40ecf0bul,
0x9309ff9dul, 0x0a00ae27ul, 0x7d079eb1ul,
0xf00f9344ul, 0x8708a3d2ul, 0x1e01f268ul, 0x6906c2feul, 0xf762575dul,
0x806567cbul, 0x196c3671ul, 0x6e6b06e7ul,
0xfed41b76ul, 0x89d32be0ul, 0x10da7a5aul, 0x67dd4accul, 0xf9b9df6ful,
0x8ebeeff9ul, 0x17b7be43ul, 0x60b08ed5ul,
0xd6d6a3e8ul, 0xa1d1937eul, 0x38d8c2c4ul, 0x4fdff252ul, 0xd1bb67f1ul,
0xa6bc5767ul, 0x3fb506ddul, 0x48b2364bul,
0xd80d2bdaul, 0xaf0a1b4cul, 0x36034af6ul, 0x41047a60ul, 0xdf60efc3ul,
0xa867df55ul, 0x316e8eeful, 0x4669be79ul,
0xcb61b38cul, 0xbc66831aul, 0x256fd2a0ul, 0x5268e236ul, 0xcc0c7795ul,
0xbb0b4703ul, 0x220216b9ul, 0x5505262ful,
0xc5ba3bbeul, 0xb2bd0b28ul, 0x2bb45a92ul, 0x5cb36a04ul, 0xc2d7ffa7ul,
0xb5d0cf31ul, 0x2cd99e8bul, 0x5bdeae1dul,
0x9b64c2b0ul, 0xec63f226ul, 0x756aa39cul, 0x026d930aul, 0x9c0906a9ul,
0xeb0e363ful, 0x72076785ul, 0x05005713ul,
0x95bf4a82ul, 0xe2b87a14ul, 0x7bb12baeul, 0x0cb61b38ul, 0x92d28e9bul,
0xe5d5be0dul, 0x7cdcefb7ul, 0x0bdbdf21ul,
0x86d3d2d4ul, 0xf1d4e242ul, 0x68ddb3f8ul, 0x1fda836eul, 0x81be16cdul,
0xf6b9265bul, 0x6fb077e1ul, 0x18b74777ul,
0x88085ae6ul, 0xff0f6a70ul, 0x66063bcaul, 0x11010b5cul, 0x8f659efful,
0xf862ae69ul, 0x616bffd3ul, 0x166ccf45ul,
0xa00ae278ul, 0xd70dd2eeul, 0x4e048354ul, 0x3903b3c2ul, 0xa7672661ul,
0xd06016f7ul, 0x4969474dul, 0x3e6e77dbul,
0xaed16a4aul, 0xd9d65adcul, 0x40df0b66ul, 0x37d83bf0ul, 0xa9bcae53ul,
0xdebb9ec5ul, 0x47b2cf7ful, 0x30b5ffe9ul,
0xbdbdf21cul, 0xcabac28aul, 0x53b39330ul, 0x24b4a3a6ul, 0xbad03605ul,
0xcdd70693ul, 0x54de5729ul, 0x23d967bful,
0xb3667a2eul, 0xc4614ab8ul, 0x5d681b02ul, 0x2a6f2b94ul, 0xb40bbe37ul,
0xc30c8ea1ul, 0x5a05df1bul, 0x2d02ef8dul
};
unsigned long crc32block (char *ptr, short count, unsigned long tcrc)
{
short i = 0;
char *temp = NULL;
temp = ptr;
for (i = 0; i < count; i++, temp++)
{
tcrc =
cr3tab[((short)tcrc ^ *temp) & 0xff] ^ ((tcrc >> 8) & 0x00FFFFFFul);
}
return tcrc;
}
void dupcheck (short type)
{
unsigned short i = 0;
isdupe = 0;
if (((type != 2) ? msgcrc32 : smsgcrc32) == 0L)
{
//
// For Jury Fradkin
//
if (bcfg.loglevel > 9)
{
sprintf (logout, "Empty magic number!");
logwrite (1, 10);
}
//
// For Jury Fradkin
//
return;
}
if (dupemax > bcfg.maxdupes)
return;
if (dupbuf == NULL)
return;
// if(type==1 || type==3)
// {
for (i = 0; i < dupemax; i++)
{
if (dupbuf[i] == ((type != 2) ? msgcrc32 : smsgcrc32))
{
isdupe = 1;
//
// For Jury Fradkin
//
if (bcfg.loglevel > 9)
{
sprintf (logout, "Duped magic number - %lx",
((type != 2) ? msgcrc32 : smsgcrc32));
logwrite (1, 10);
}
//
// For Jury Fradkin
//
break;
}
}
// }
if (!isdupe)
{
//
// For Jury Fradkin
//
if (bcfg.loglevel > 10)
{
sprintf (logout, "Magic number - %lx",
((type != 2) ? msgcrc32 : smsgcrc32));
logwrite (1, 12);
}
//
// For Jury Fradkin
//
if (dupemax < newarea->dupes)
dupemax++;
dupecur++;
if (dupecur > newarea->dupes)
dupecur = 1;
dupbuf[dupecur - 1] = ((type != 2) ? msgcrc32 : smsgcrc32);
newarea->duptouch = 1;
}
}
void dupundo (void)
{
if (dupbuf == NULL)
return;
if (dupecur)
dupecur--;
if (dupecur == 0)
dupecur = 1;
dupbuf[dupecur - 1] = 0L;
newarea->duptouch = 1;
}