Source code of Windows XP (NT5)
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111 lines
2.2 KiB

/*++
Copyright (c) 1994 - 1995 Microsoft Corporation
Module Name:
PnpId.c
Abstract:
Generate pnp hardware id from model manufacturer
Author:
Revision History:
--*/
#define NOMINMAX
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
WORD wCRC16a[16]={
0000000, 0140301, 0140601, 0000500,
0141401, 0001700, 0001200, 0141101,
0143001, 0003300, 0003600, 0143501,
0002400, 0142701, 0142201, 0002100,
};
WORD wCRC16b[16]={
0000000, 0146001, 0154001, 0012000,
0170001, 0036000, 0024000, 0162001,
0120001, 0066000, 0074000, 0132001,
0050000, 0116001, 0104001, 0043000,
};
//
// From win95
//
#define MAX_DEVNODE_NAME_ROOT 20
USHORT
GetCheckSum(
PBYTE ptr,
ULONG ulSize
)
{
BYTE byte;
USHORT CS=0;
for ( ; ulSize ; --ulSize, ++ptr) {
byte = (BYTE)(((WORD)*ptr)^((WORD)CS)); // Xor CRC with new char
CS = ((CS)>>8) ^ wCRC16a[byte&0x0F] ^ wCRC16b[byte>>4];
}
printf("Check sum: %04X\n", CS);
return CS;
}
int
#if !defined(_MIPS_) && !defined(_ALPHA_) && !defined(_PPC_)
_cdecl
#endif
main (argc, argv)
int argc;
char *argv[];
{
TCHAR szHwId[100], szCheckSum[10],
szDevNodeName[100], *p;
USHORT usCheckSum;
DWORD dwLastError, dwcbHardwareIDSize;
if ( argc != 3 ) {
printf("Usage: %s ""Manufacturer Name"" ""Model Name""\n", argv[0]);
return 0;
}
lstrcpy(szHwId, argv[1]);
lstrcat(szHwId, argv[2]);
usCheckSum = GetCheckSum(szHwId, strlen(szHwId));
sprintf( szCheckSum, "%04X", usCheckSum );
dwcbHardwareIDSize = strlen(argv[1]) + strlen(argv[2]);
if ( dwcbHardwareIDSize > MAX_DEVNODE_NAME_ROOT )
dwcbHardwareIDSize = MAX_DEVNODE_NAME_ROOT;
szHwId[dwcbHardwareIDSize] = TEXT('\0');
for ( p = szHwId ; p = strchr(p, TEXT(' ')) ; )
*p = TEXT('_');
lstrcat(szHwId, szCheckSum);
lstrcpy(szDevNodeName, TEXT("LPTENUM"));
lstrcat(szDevNodeName, TEXT("\\"));
lstrcat(szDevNodeName, szHwId);
printf("Hardware Id : %s\n", szHwId);
printf("Devnode name: %s\n", szDevNodeName);
}