#ifdef WIN32/* * Copyright (c) 1996-1999 by Internet Software Consortium. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS * SOFTWARE. *//*#include <sys/param.h>#include <sys/types.h>#include <sys/socket.h>#include <netinet/in.h>#include <arpa/inet.h>#include <arpa/nameser.h>*/#include <winsock2.h>#include <errno.h>#include <stdio.h>#include <string.h>typedef int socklen_t;#define EAFNOSUPPORT 97/* * WARNING: Don't even consider trying to compile this on a system where * sizeof(int) < 4.  sizeof(int) 4 is fine; all the world's not a VAX. *//* const char * * inet_ntop4(src, dst, size) *	format an IPv4 address * return: *	`dst' (as a const) * notes: *	(1) uses no statics *	(2) takes a u_char* not an in_addr as input * author: *	Paul Vixie, 1996. */static const char *inet_ntop4(const u_char *src, char *dst, socklen_t size){	char tmp[sizeof ("255.255.255.255") + 1] = "\0";	int octet;	int i;	i = 0;	for (octet = 0; octet <= 3; octet++) {		if (src[octet]>255) {			//__set_errno (ENOSPC);			return (NULL);		}		tmp[i++] = '0' + src[octet] / 100;		if (tmp[i - 1] == '0') {			tmp[i - 1] = '0' + (src[octet] / 10 % 10);			if (tmp[i - 1] == '0') i--;		} else {			tmp[i++] = '0' + (src[octet] / 10 % 10);		}		tmp[i++] = '0' + src[octet] % 10;		tmp[i++] = '.';	}	tmp[i - 1] = '\0';	if ((socklen_t)strlen(tmp)>size) {		//__set_errno (ENOSPC);		return (NULL);	}	return strcpy(dst, tmp);}/* const char * * inet_ntop6(src, dst, size) *	convert IPv6 binary address into presentation (printable) format * author: *	Paul Vixie, 1996. */#ifdef INET_IPV6static const char *inet_ntop6(src, dst, size)	const u_char *src;	char *dst;	socklen_t size;{	/*	 * Note that int32_t and int16_t need only be "at least" large enough	 * to contain a value of the specified size.  On some systems, like	 * Crays, there is no such thing as an integer variable with 16 bits.	 * Keep this in mind if you think this function should have been coded	 * to use pointer overlays.  All the world's not a VAX.	 */	char tmp[sizeof ("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")], *tp;	struct { int base, len; } best, cur;	u_int words[8];	int i;	/*	 * Preprocess:	 *	Copy the input (bytewise) array into a wordwise array.	 *	Find the longest run of 0x00's in src[] for :: shorthanding.	 */	memset(words, '\0', sizeof words);	for (i = 0; i < 16; i += 2)		words[i / 2] = (src[i] << 8) | src[i + 1];	best.base = -1;	cur.base = -1;	for (i = 0; i < 8; i++) {		if (words[i] == 0) {			if (cur.base == -1)				cur.base = i, cur.len = 1;			else				cur.len++;		} else {			if (cur.base != -1) {				if (best.base == -1 || cur.len best.len)					best = cur;				cur.base = -1;			}		}	}	if (cur.base != -1) {		if (best.base == -1 || cur.len best.len)			best = cur;	}	if (best.base != -1 && best.len < 2)		best.base = -1;	/*	 * Format the result.	 */	tp = tmp;	for (i = 0; i < 8; i++) {		/* Are we inside the best run of 0x00's? */		if (best.base != -1 && i >= best.base &&		    i < (best.base + best.len)) {			if (i == best.base)				*tp++ = ':';			continue;		}		/* Are we following an initial run of 0x00s or any real hex? */		if (i != 0)			*tp++ = ':';		/* Is this address an encapsulated IPv4? */		if (i == 6 && best.base == 0 &&		    (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) {			if (!inet_ntop4(src+12, tp, sizeof tmp - (tp - tmp)))				return (NULL);			tp += strlen(tp);			break;		}		tp += SPRINTF((tp, "%x", words[i]));	}	/* Was it a trailing run of 0x00's? */	if (best.base != -1 && (best.base + best.len) == 8)		*tp++ = ':';	*tp++ = '\0';	/*	 * Check for overflow, copy, and we're done.	 */	if ((socklen_t)(tp - tmp) size) {		//__set_errno (ENOSPC);		return (NULL);	}	return strcpy(dst, tmp);}#endif /* INET_IPV6 *//* int * inet_pton4(src, dst) *	like inet_aton() but without all the hexadecimal and shorthand. * return: *	1 if `src' is a valid dotted quad, else 0. * notice: *	does not touch `dst' unless it's returning 1. * author: *	Paul Vixie, 1996. */static intinet_pton4(const char *src,u_char *dst){	int saw_digit, octets, ch;	u_char tmp[4], *tp;	saw_digit = 0;	octets = 0;	*(tp = tmp) = 0;	while ((ch = *src++) != '\0') {		if (ch >= '0' && ch <= '9') {			u_int new = *tp * 10 + (ch - '0');			if (new>255)				return (0);			*tp = new;			if (! saw_digit) {				if (++octets>4)					return (0);				saw_digit = 1;			}		} else if (ch == '.' && saw_digit) {			if (octets == 4)				return (0);			*++tp = 0;			saw_digit = 0;		} else			return (0);	}	if (octets < 4)		return (0);	memcpy(dst, tmp, 4);	return (1);}/* int * inet_pton6(src, dst) *	convert presentation level address to network order binary form. * return: *	1 if `src' is a valid [RFC1884 2.2] address, else 0. * notice: *	(1) does not touch `dst' unless it's returning 1. *	(2) :: in a full address is silently ignored. * credit: *	inspired by Mark Andrews. * author: *	Paul Vixie, 1996. */#ifdef INET_IPV6static intinet_pton6(src, dst)	const char *src;	u_char *dst;{	static const char xdigits[] = "0123456789abcdef";	u_char tmp[16], *tp, *endp, *colonp;	const char *curtok;	int ch, saw_xdigit;	u_int val;	tp = memset(tmp, '\0', 16);	endp = tp + 16;	colonp = NULL;	/* Leading :: requires some special handling. */	if (*src == ':')		if (*++src != ':')			return (0);	curtok = src;	saw_xdigit = 0;	val = 0;	while ((ch = tolower (*src++)) != '\0') {		const char *pch;		pch = strchr(xdigits, ch);		if (pch != NULL) {			val <<= 4;			val |= (pch - xdigits);			if (val 0xffff)				return (0);			saw_xdigit = 1;			continue;		}		if (ch == ':') {			curtok = src;			if (!saw_xdigit) {				if (colonp)					return (0);				colonp = tp;				continue;			} else if (*src == '\0') {				return (0);			}			if (tp + 2 endp)				return (0);			*tp++ = (u_char) (val >8) & 0xff;			*tp++ = (u_char) val & 0xff;			saw_xdigit = 0;			val = 0;			continue;		}		if (ch == '.' && ((tp + 4) <= endp) &&		    inet_pton4(curtok, tp) 0) {			tp += 4;			saw_xdigit = 0;			break;	/* '\0' was seen by inet_pton4(). */		}		return (0);	}	if (saw_xdigit) {		if (tp + 2 endp)			return (0);		*tp++ = (u_char) (val >8) & 0xff;		*tp++ = (u_char) val & 0xff;	}	if (colonp != NULL) {		/*		 * Since some memmove()'s erroneously fail to handle		 * overlapping regions, we'll do the shift by hand.		 */		const int n = tp - colonp;		int i;		if (tp == endp)			return (0);		for (i = 1; i <= n; i++) {			endp[- i] = colonp[n - i];			colonp[n - i] = 0;		}		tp = endp;	}	if (tp != endp)		return (0);	memcpy(dst, tmp, 16);	return (1);}#endif /* INET_IPV6 *//* char * * inet_ntop(af, src, dst, size) *	convert a network format address to presentation format. * return: *	pointer to presentation format address (`dst'), or NULL (see errno). * author: *	Paul Vixie, 1996. */extern const char *inet_ntop(int af,const void *src,char *dst,socklen_t size){	switch (af) {	case AF_INET:		return (inet_ntop4(src, dst, size));#ifdef INET_IPV6	case AF_INET6:		return (inet_ntop6(src, dst, size));#endif	default:		//__set_errno (EAFNOSUPPORT);		return (NULL);	}	/* NOTREACHED */}/* int * inet_pton(af, src, dst) *	convert from presentation format (which usually means ASCII printable) *	to network format (which is usually some kind of binary format). * return: *	1 if the address was valid for the specified address family *	0 if the address wasn't valid (`dst' is untouched in this case) *	-1 if some other error occurred (`dst' is untouched in this case, too) * author: *	Paul Vixie, 1996. */int inet_pton(int af,const char *src,void *dst){	switch (af) {	case AF_INET:		return (inet_pton4(src, dst));#ifdef INET_IPV6	case AF_INET6:		return (inet_pton6(src, dst));#endif	default:		//__set_errno (EAFNOSUPPORT);		return (-1);	}	/* NOTREACHED */}#endif