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/*++
Intel Corporation Proprietary Information
Copyright (c) 1995 Intel Corporation
This listing is supplied under the terms of a license agreement with
Intel Corporation and may not be used, copied, nor disclosed except in
accordance with the terms of that agreeement.
Module Name:
addrconv.c
Abstract:
This module contains the address conversion routines from the
winsock2 API. This module contains the following functions.
htonl()
htons()
ntohl()
ntohs()
inet_addr()
inet_ntoa()
WSAHtonl()
WSAHtons()
WSANtohl()
WSANtohs()
Author:
Dirk Brandewie [email protected] 14-06-1995
[Environment:]
[Notes:]
Revision History:
22-Aug-1995 [email protected]
Cleanup after code review. Moved includes to precomp.h
--*/
#include "precomp.h"
// these defines are used to check if address parts are in range
#define MAX_EIGHT_BIT_VALUE 0xff
#define MAX_SIXTEEN_BIT_VALUE 0xffff
#define MAX_TWENTY_FOUR_BIT_VALUE 0xffffff
// Defines for different based numbers in an address
#define BASE_TEN 10
#define BASE_EIGHT 8
#define BASE_SIXTEEN 16
//
// Macros for swapping the bytes in a long and a short.
//
#define SWAP_LONG(l) \
( ( ((l) >> 24) & 0x000000FFL ) | \
( ((l) >> 8) & 0x0000FF00L ) | \
( ((l) << 8) & 0x00FF0000L ) | \
( ((l) << 24) & 0xFF000000L ) )
#define WS_SWAP_SHORT(s) \
( ( ((s) >> 8) & 0x00FF ) | \
( ((s) << 8) & 0xFF00 ) )
//
// This preinitialized array defines the strings to be used for
// inet_ntoa. The index of each row corresponds to the value for a byte
// in an IP address. The first three bytes of each row are the
// char/string value for the byte, and the fourth byte in each row is
// the length of the string required for the byte. This approach
// allows a fast implementation with no jumps.
//
BYTE NToACharStrings[][4] = {
'0', 'x', 'x', 1,
'1', 'x', 'x', 1,
'2', 'x', 'x', 1,
'3', 'x', 'x', 1,
'4', 'x', 'x', 1,
'5', 'x', 'x', 1,
'6', 'x', 'x', 1,
'7', 'x', 'x', 1,
'8', 'x', 'x', 1,
'9', 'x', 'x', 1,
'1', '0', 'x', 2,
'1', '1', 'x', 2,
'1', '2', 'x', 2,
'1', '3', 'x', 2,
'1', '4', 'x', 2,
'1', '5', 'x', 2,
'1', '6', 'x', 2,
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