93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
/*
|
|
* Copyright (c) 1996 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.
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static const char orig_rcsid[] = "From Id: inet_neta.c,v 8.2 1996/08/08 06:54:44 vixie Exp";
|
|
#endif
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#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>
|
|
|
|
#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);
|