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/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* 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 ISC DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC 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.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "$Id: inet_neta.c,v 1.3 2005/04/27 04:56:20 sra Exp $";
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "port_before.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include "port_after.h"
#ifdef SPRINTF_CHAR
# define SPRINTF(x) strlen(sprintf/**/x)
#else
# define SPRINTF(x) ((size_t)sprintf x)
#endif
/*%
* char *
* inet_neta(src, dst, size)
* format an in_addr_t network number into presentation format.
* return:
* pointer to dst, or NULL if an error occurred (check errno).
* note:
* format of ``src'' is as for inet_network().
* author:
* Paul Vixie (ISC), July 1996
*/
char *
inet_neta(src, dst, size)
in_addr_t src;
char *dst;
size_t size;
{
char *odst = dst;
char *tp;
while (src & 0xffffffff) {
u_char b = (src & 0xff000000) >> 24;
src <<= 8;
if (b) {
if (size < sizeof "255.")
goto emsgsize;
tp = dst;
dst += SPRINTF((dst, "%u", b));
if (src != 0L) {
*dst++ = '.';
*dst = '\0';
}
size -= (size_t)(dst - tp);
}
}
if (dst == odst) {
if (size < sizeof "0.0.0.0")
goto emsgsize;
strcpy(dst, "0.0.0.0");
}
return (odst);
emsgsize:
errno = EMSGSIZE;
return (NULL);
}
/*
* Weak aliases for applications that use certain private entry points,
* and fail to include <arpa/inet.h>.
*/
#undef inet_neta
__weak_reference(__inet_neta, inet_neta);
/*! \file */
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