256 lines
6.2 KiB
C
256 lines
6.2 KiB
C
/* $NetBSD: sockaddr_snprintf.c,v 1.9 2008/04/28 20:23:03 martin Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2004 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Christos Zoulas.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
#include <sys/cdefs.h>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: sockaddr_snprintf.c,v 1.9 2008/04/28 20:23:03 martin Exp $");
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/un.h>
|
|
|
|
#include <netinet/in.h>
|
|
#ifndef __minix
|
|
#include <netatalk/at.h>
|
|
#include <net/if_dl.h>
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <util.h>
|
|
#include <netdb.h>
|
|
|
|
int
|
|
sockaddr_snprintf(char * const sbuf, const size_t len, const char * const fmt,
|
|
const struct sockaddr * const sa)
|
|
{
|
|
const void *a = NULL;
|
|
char abuf[1024], nbuf[1024], *addr = NULL, *w = NULL;
|
|
char Abuf[1024], pbuf[32], *name = NULL, *port = NULL;
|
|
char *ebuf = &sbuf[len - 1], *buf = sbuf;
|
|
const char *ptr, *s;
|
|
int p = -1;
|
|
const struct sockaddr_in *sin4 = NULL;
|
|
#ifndef __minix
|
|
const struct sockaddr_at *sat = NULL;
|
|
const struct sockaddr_in6 *sin6 = NULL;
|
|
const struct sockaddr_un *sun = NULL;
|
|
const struct sockaddr_dl *sdl = NULL;
|
|
#endif
|
|
int na = 1;
|
|
|
|
#define ADDC(c) do { if (buf < ebuf) *buf++ = c; else buf++; } \
|
|
while (/*CONSTCOND*/0)
|
|
#define ADDS(p) do { for (s = p; *s; s++) ADDC(*s); } \
|
|
while (/*CONSTCOND*/0)
|
|
#define ADDNA() do { if (na) ADDS("N/A"); } \
|
|
while (/*CONSTCOND*/0)
|
|
|
|
switch (sa->sa_family) {
|
|
case AF_UNSPEC:
|
|
goto done;
|
|
#ifndef __minix
|
|
case AF_APPLETALK:
|
|
sat = ((const struct sockaddr_at *)(const void *)sa);
|
|
p = ntohs(sat->sat_port);
|
|
(void)snprintf(addr = abuf, sizeof(abuf), "%u.%u",
|
|
ntohs(sat->sat_addr.s_net), sat->sat_addr.s_node);
|
|
(void)snprintf(port = pbuf, sizeof(pbuf), "%d", p);
|
|
break;
|
|
case AF_LOCAL:
|
|
sun = ((const struct sockaddr_un *)(const void *)sa);
|
|
(void)strlcpy(addr = abuf, sun->sun_path, SUN_LEN(sun));
|
|
break;
|
|
#endif
|
|
case AF_INET:
|
|
sin4 = ((const struct sockaddr_in *)(const void *)sa);
|
|
p = ntohs(sin4->sin_port);
|
|
a = &sin4->sin_addr;
|
|
break;
|
|
#ifndef __minix
|
|
case AF_INET6:
|
|
sin6 = ((const struct sockaddr_in6 *)(const void *)sa);
|
|
p = ntohs(sin6->sin6_port);
|
|
a = &sin6->sin6_addr;
|
|
break;
|
|
case AF_LINK:
|
|
sdl = ((const struct sockaddr_dl *)(const void *)sa);
|
|
(void)strlcpy(addr = abuf, link_ntoa(sdl), sizeof(abuf));
|
|
if ((w = strchr(addr, ':')) != 0) {
|
|
*w++ = '\0';
|
|
addr = w;
|
|
}
|
|
break;
|
|
#endif
|
|
default:
|
|
errno = EAFNOSUPPORT;
|
|
return -1;
|
|
}
|
|
|
|
if (addr == abuf)
|
|
name = addr;
|
|
|
|
#ifndef __minix
|
|
if (a && getnameinfo(sa, (socklen_t)sa->sa_len, addr = abuf,
|
|
#else
|
|
if (a && getnameinfo(sa, (socklen_t)len, addr = abuf,
|
|
#endif
|
|
(unsigned int)sizeof(abuf), NULL, 0,
|
|
NI_NUMERICHOST|NI_NUMERICSERV) != 0)
|
|
return -1;
|
|
|
|
for (ptr = fmt; *ptr; ptr++) {
|
|
if (*ptr != '%') {
|
|
ADDC(*ptr);
|
|
continue;
|
|
}
|
|
next_char:
|
|
switch (*++ptr) {
|
|
case '?':
|
|
na = 0;
|
|
goto next_char;
|
|
case 'a':
|
|
ADDS(addr);
|
|
break;
|
|
case 'p':
|
|
if (p != -1) {
|
|
(void)snprintf(nbuf, sizeof(nbuf), "%d", p);
|
|
ADDS(nbuf);
|
|
} else
|
|
ADDNA();
|
|
break;
|
|
case 'f':
|
|
(void)snprintf(nbuf, sizeof(nbuf), "%d", sa->sa_family);
|
|
ADDS(nbuf);
|
|
break;
|
|
case 'l':
|
|
#ifndef __minix
|
|
(void)snprintf(nbuf, sizeof(nbuf), "%d", sa->sa_len);
|
|
#else
|
|
(void)snprintf(nbuf, sizeof(nbuf), "%d", len);
|
|
#endif
|
|
ADDS(nbuf);
|
|
break;
|
|
case 'A':
|
|
if (name)
|
|
ADDS(name);
|
|
else if (!a)
|
|
ADDNA();
|
|
else {
|
|
#ifndef __minix
|
|
getnameinfo(sa, (socklen_t)sa->sa_len,
|
|
#else
|
|
getnameinfo(sa, (socklen_t)len,
|
|
#endif
|
|
name = Abuf,
|
|
(unsigned int)sizeof(nbuf), NULL, 0, 0);
|
|
ADDS(name);
|
|
}
|
|
break;
|
|
case 'P':
|
|
if (port)
|
|
ADDS(port);
|
|
else if (p == -1)
|
|
ADDNA();
|
|
else {
|
|
#ifndef __minix
|
|
getnameinfo(sa, (socklen_t)sa->sa_len, NULL, 0,
|
|
#else
|
|
getnameinfo(sa, (socklen_t)len, NULL, 0,
|
|
#endif
|
|
port = pbuf,
|
|
(unsigned int)sizeof(pbuf), 0);
|
|
ADDS(port);
|
|
}
|
|
break;
|
|
#ifndef __minix
|
|
case 'I':
|
|
if (sdl && addr != abuf) {
|
|
ADDS(abuf);
|
|
} else {
|
|
ADDNA();
|
|
}
|
|
break;
|
|
case 'F':
|
|
if (sin6) {
|
|
(void)snprintf(nbuf, sizeof(nbuf), "%d",
|
|
sin6->sin6_flowinfo);
|
|
ADDS(nbuf);
|
|
break;
|
|
} else {
|
|
ADDNA();
|
|
}
|
|
break;
|
|
case 'S':
|
|
if (sin6) {
|
|
(void)snprintf(nbuf, sizeof(nbuf), "%d",
|
|
sin6->sin6_scope_id);
|
|
ADDS(nbuf);
|
|
break;
|
|
} else {
|
|
ADDNA();
|
|
}
|
|
break;
|
|
case 'R':
|
|
if (sat) {
|
|
const struct netrange *n =
|
|
&sat->sat_range.r_netrange;
|
|
(void)snprintf(nbuf, sizeof(nbuf),
|
|
"%d:[%d,%d]", n->nr_phase , n->nr_firstnet,
|
|
n->nr_lastnet);
|
|
ADDS(nbuf);
|
|
} else {
|
|
ADDNA();
|
|
}
|
|
break;
|
|
#endif
|
|
default:
|
|
ADDC('%');
|
|
if (na == 0)
|
|
ADDC('?');
|
|
if (*ptr == '\0')
|
|
goto done;
|
|
/*FALLTHROUGH*/
|
|
case '%':
|
|
ADDC(*ptr);
|
|
break;
|
|
}
|
|
na = 1;
|
|
}
|
|
done:
|
|
if (buf < ebuf)
|
|
*buf = '\0';
|
|
else if (len != 0)
|
|
sbuf[len - 1] = '\0';
|
|
return (int)(buf - sbuf);
|
|
}
|