2002-03-04 18:15:39 +03:00
|
|
|
/* $NetBSD: getnameinfo.c,v 1.35 2002/03/04 15:16:31 sommerfeld Exp $ */
|
2000-09-26 03:07:28 +04:00
|
|
|
/* $KAME: getnameinfo.c,v 1.45 2000/09/25 22:43:56 itojun Exp $ */
|
1999-07-04 04:43:43 +04:00
|
|
|
|
1999-07-01 22:23:53 +04:00
|
|
|
/*
|
2001-10-06 17:59:41 +04:00
|
|
|
* Copyright (c) 2000 Ben Harris.
|
1999-07-01 22:23:53 +04:00
|
|
|
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
|
|
|
|
* All rights reserved.
|
2000-06-12 07:55:10 +04:00
|
|
|
*
|
1999-07-01 22:23:53 +04:00
|
|
|
* 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.
|
|
|
|
* 3. Neither the name of the project nor the names of its contributors
|
|
|
|
* may be used to endorse or promote products derived from this software
|
|
|
|
* without specific prior written permission.
|
2000-06-12 07:55:10 +04:00
|
|
|
*
|
1999-07-01 22:23:53 +04:00
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Issues to be discussed:
|
|
|
|
* - Thread safe-ness must be checked
|
1999-12-13 17:18:31 +03:00
|
|
|
* - RFC2553 says that we should raise error on short buffer. X/Open says
|
|
|
|
* we need to truncate the result. We obey RFC2553 (and X/Open should be
|
2000-08-07 20:18:45 +04:00
|
|
|
* modified). ipngwg rough consensus seems to follow RFC2553.
|
2000-04-26 20:08:38 +04:00
|
|
|
* - What is "local" in NI_FQDN?
|
|
|
|
* - NI_NAMEREQD and NI_NUMERICHOST conflict with each other.
|
2001-11-15 07:49:01 +03:00
|
|
|
* - (KAME extension) always attach textual scopeid (fe80::1%lo0), if
|
|
|
|
* sin6_scope_id is filled - standardization status?
|
|
|
|
* XXX breaks backward compat for code that expects no scopeid.
|
|
|
|
* beware on merge.
|
1999-07-01 22:23:53 +04:00
|
|
|
*/
|
|
|
|
|
2000-04-24 14:40:24 +04:00
|
|
|
#include <sys/cdefs.h>
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
2002-03-04 18:15:39 +03:00
|
|
|
__RCSID("$NetBSD: getnameinfo.c,v 1.35 2002/03/04 15:16:31 sommerfeld Exp $");
|
2000-04-24 14:40:24 +04:00
|
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
|
2000-04-24 13:27:30 +04:00
|
|
|
#include "namespace.h"
|
1999-07-01 22:23:53 +04:00
|
|
|
#include <sys/types.h>
|
|
|
|
#include <sys/socket.h>
|
1999-12-13 17:18:31 +03:00
|
|
|
#include <net/if.h>
|
2001-10-06 17:59:41 +04:00
|
|
|
#include <net/if_dl.h>
|
|
|
|
#include <net/if_ieee1394.h>
|
|
|
|
#include <net/if_types.h>
|
1999-07-01 22:23:53 +04:00
|
|
|
#include <netinet/in.h>
|
|
|
|
#include <arpa/inet.h>
|
|
|
|
#include <arpa/nameser.h>
|
2001-01-04 06:56:17 +03:00
|
|
|
#include <assert.h>
|
2001-10-06 17:59:41 +04:00
|
|
|
#include <limits.h>
|
1999-07-01 22:23:53 +04:00
|
|
|
#include <netdb.h>
|
|
|
|
#include <resolv.h>
|
|
|
|
#include <stddef.h>
|
2001-01-04 06:56:17 +03:00
|
|
|
#include <string.h>
|
1999-07-01 22:23:53 +04:00
|
|
|
|
2000-04-24 13:27:30 +04:00
|
|
|
#ifdef __weak_alias
|
|
|
|
__weak_alias(getnameinfo,_getnameinfo)
|
|
|
|
#endif
|
|
|
|
|
2001-01-26 01:50:55 +03:00
|
|
|
static const struct afd {
|
2001-04-26 23:43:53 +04:00
|
|
|
int a_af;
|
|
|
|
socklen_t a_addrlen;
|
|
|
|
socklen_t a_socklen;
|
|
|
|
int a_off;
|
1999-07-01 22:23:53 +04:00
|
|
|
} afdl [] = {
|
|
|
|
#ifdef INET6
|
|
|
|
{PF_INET6, sizeof(struct in6_addr), sizeof(struct sockaddr_in6),
|
|
|
|
offsetof(struct sockaddr_in6, sin6_addr)},
|
|
|
|
#endif
|
|
|
|
{PF_INET, sizeof(struct in_addr), sizeof(struct sockaddr_in),
|
|
|
|
offsetof(struct sockaddr_in, sin_addr)},
|
|
|
|
{0, 0, 0},
|
|
|
|
};
|
|
|
|
|
|
|
|
struct sockinet {
|
|
|
|
u_char si_len;
|
|
|
|
u_char si_family;
|
|
|
|
u_short si_port;
|
|
|
|
};
|
|
|
|
|
2001-10-06 17:59:41 +04:00
|
|
|
static int getnameinfo_inet __P((const struct sockaddr *, socklen_t, char *,
|
|
|
|
size_t, char *, size_t, int));
|
2000-02-09 15:25:06 +03:00
|
|
|
#ifdef INET6
|
2000-04-26 20:08:38 +04:00
|
|
|
static int ip6_parsenumeric __P((const struct sockaddr *, const char *, char *,
|
|
|
|
size_t, int));
|
|
|
|
static int ip6_sa2str __P((const struct sockaddr_in6 *, char *, size_t, int));
|
2000-06-12 07:55:10 +04:00
|
|
|
#endif
|
2001-10-06 17:59:41 +04:00
|
|
|
static int getnameinfo_link __P((const struct sockaddr *, socklen_t, char *,
|
|
|
|
size_t, char *, size_t, int));
|
|
|
|
static int hexname __P((const u_int8_t *, size_t, char *, size_t));
|
2000-02-09 15:25:06 +03:00
|
|
|
|
2001-10-06 17:59:41 +04:00
|
|
|
/*
|
|
|
|
* Top-level getnameinfo() code. Look at the address family, and pick an
|
|
|
|
* appropriate function to call.
|
|
|
|
*/
|
1999-07-01 22:23:53 +04:00
|
|
|
int
|
|
|
|
getnameinfo(sa, salen, host, hostlen, serv, servlen, flags)
|
2001-10-06 17:59:41 +04:00
|
|
|
const struct sockaddr *sa;
|
|
|
|
socklen_t salen;
|
|
|
|
char *host, *serv;
|
|
|
|
size_t hostlen, servlen;
|
|
|
|
int flags;
|
|
|
|
{
|
|
|
|
|
|
|
|
switch (sa->sa_family) {
|
|
|
|
case AF_INET:
|
|
|
|
case AF_INET6:
|
|
|
|
return getnameinfo_inet(sa, salen, host, hostlen,
|
|
|
|
serv, servlen, flags);
|
|
|
|
case AF_LINK:
|
|
|
|
return getnameinfo_link(sa, salen, host, hostlen,
|
|
|
|
serv, servlen, flags);
|
|
|
|
default:
|
|
|
|
return EAI_FAMILY;
|
|
|
|
}
|
2002-03-04 18:15:39 +03:00
|
|
|
}
|
2001-10-06 17:59:41 +04:00
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* getnameinfo_inet():
|
|
|
|
* Format an IPv4 or IPv6 sockaddr into a printable string.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
getnameinfo_inet(sa, salen, host, hostlen, serv, servlen, flags)
|
1999-07-01 22:23:53 +04:00
|
|
|
const struct sockaddr *sa;
|
2000-06-04 12:51:23 +04:00
|
|
|
socklen_t salen;
|
1999-07-01 22:23:53 +04:00
|
|
|
char *host;
|
|
|
|
size_t hostlen;
|
|
|
|
char *serv;
|
|
|
|
size_t servlen;
|
|
|
|
int flags;
|
|
|
|
{
|
2001-01-26 01:50:55 +03:00
|
|
|
const struct afd *afd;
|
1999-07-01 22:23:53 +04:00
|
|
|
struct servent *sp;
|
|
|
|
struct hostent *hp;
|
|
|
|
u_short port;
|
1999-12-13 17:18:31 +03:00
|
|
|
int family, i;
|
2000-04-26 20:08:38 +04:00
|
|
|
const char *addr;
|
1999-12-13 17:18:31 +03:00
|
|
|
u_int32_t v4a;
|
1999-07-01 22:23:53 +04:00
|
|
|
char numserv[512];
|
|
|
|
char numaddr[512];
|
|
|
|
|
2001-01-04 06:56:17 +03:00
|
|
|
/* sa is checked below */
|
|
|
|
/* host may be NULL */
|
|
|
|
/* serv may be NULL */
|
|
|
|
|
1999-07-01 22:23:53 +04:00
|
|
|
if (sa == NULL)
|
2001-11-15 07:38:32 +03:00
|
|
|
return EAI_FAIL;
|
1999-07-01 22:23:53 +04:00
|
|
|
|
2000-03-17 09:11:55 +03:00
|
|
|
#ifdef BSD4_4
|
1999-12-13 17:18:31 +03:00
|
|
|
if (sa->sa_len != salen)
|
2001-11-15 07:38:32 +03:00
|
|
|
return EAI_FAIL;
|
2000-03-17 09:11:55 +03:00
|
|
|
#endif
|
2001-11-15 07:38:32 +03:00
|
|
|
|
1999-07-01 22:23:53 +04:00
|
|
|
family = sa->sa_family;
|
|
|
|
for (i = 0; afdl[i].a_af; i++)
|
|
|
|
if (afdl[i].a_af == family) {
|
|
|
|
afd = &afdl[i];
|
|
|
|
goto found;
|
|
|
|
}
|
2001-11-15 07:38:32 +03:00
|
|
|
return EAI_FAMILY;
|
|
|
|
|
1999-07-01 22:23:53 +04:00
|
|
|
found:
|
1999-12-13 17:18:31 +03:00
|
|
|
if (salen != afd->a_socklen)
|
2001-11-15 07:38:32 +03:00
|
|
|
return EAI_FAIL;
|
|
|
|
|
2000-04-26 20:08:38 +04:00
|
|
|
/* network byte order */
|
2000-07-06 06:54:12 +04:00
|
|
|
port = ((const struct sockinet *)(const void *)sa)->si_port;
|
|
|
|
addr = (const char *)(const void *)sa + afd->a_off;
|
1999-07-01 22:23:53 +04:00
|
|
|
|
|
|
|
if (serv == NULL || servlen == 0) {
|
1999-12-13 17:18:31 +03:00
|
|
|
/*
|
|
|
|
* do nothing in this case.
|
|
|
|
* in case you are wondering if "&&" is more correct than
|
2001-11-15 07:38:32 +03:00
|
|
|
* "||" here: rfc2553bis-03 says that serv == NULL OR
|
|
|
|
* servlen == 0 means that the caller does not want the result.
|
1999-12-13 17:18:31 +03:00
|
|
|
*/
|
1999-07-01 22:23:53 +04:00
|
|
|
} else {
|
1999-12-13 17:18:31 +03:00
|
|
|
if (flags & NI_NUMERICSERV)
|
|
|
|
sp = NULL;
|
|
|
|
else {
|
|
|
|
sp = getservbyport(port,
|
|
|
|
(flags & NI_DGRAM) ? "udp" : "tcp");
|
|
|
|
}
|
1999-07-01 22:23:53 +04:00
|
|
|
if (sp) {
|
2000-09-26 03:07:28 +04:00
|
|
|
if (strlen(sp->s_name) + 1 > servlen)
|
2001-11-15 07:38:32 +03:00
|
|
|
return EAI_MEMORY;
|
1999-07-01 22:23:53 +04:00
|
|
|
strcpy(serv, sp->s_name);
|
1999-12-13 17:18:31 +03:00
|
|
|
} else {
|
|
|
|
snprintf(numserv, sizeof(numserv), "%d", ntohs(port));
|
2000-09-26 03:07:28 +04:00
|
|
|
if (strlen(numserv) + 1 > servlen)
|
2001-11-15 07:38:32 +03:00
|
|
|
return EAI_MEMORY;
|
1999-12-13 17:18:31 +03:00
|
|
|
strcpy(serv, numserv);
|
|
|
|
}
|
1999-07-01 22:23:53 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
switch (sa->sa_family) {
|
|
|
|
case AF_INET:
|
1999-12-13 17:18:31 +03:00
|
|
|
v4a = (u_int32_t)
|
2000-07-06 06:54:12 +04:00
|
|
|
ntohl(((const struct sockaddr_in *)
|
|
|
|
(const void *)sa)->sin_addr.s_addr);
|
1999-07-01 22:23:53 +04:00
|
|
|
if (IN_MULTICAST(v4a) || IN_EXPERIMENTAL(v4a))
|
|
|
|
flags |= NI_NUMERICHOST;
|
|
|
|
v4a >>= IN_CLASSA_NSHIFT;
|
2000-01-05 07:54:54 +03:00
|
|
|
if (v4a == 0)
|
2002-03-04 18:15:39 +03:00
|
|
|
flags |= NI_NUMERICHOST;
|
1999-07-01 22:23:53 +04:00
|
|
|
break;
|
|
|
|
#ifdef INET6
|
|
|
|
case AF_INET6:
|
1999-08-01 10:45:28 +04:00
|
|
|
{
|
2000-04-26 20:08:38 +04:00
|
|
|
const struct sockaddr_in6 *sin6;
|
2000-07-06 06:54:12 +04:00
|
|
|
sin6 = (const struct sockaddr_in6 *)(const void *)sa;
|
1999-12-13 17:18:31 +03:00
|
|
|
switch (sin6->sin6_addr.s6_addr[0]) {
|
1999-08-01 10:45:28 +04:00
|
|
|
case 0x00:
|
|
|
|
if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr))
|
|
|
|
;
|
|
|
|
else if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))
|
|
|
|
;
|
|
|
|
else
|
|
|
|
flags |= NI_NUMERICHOST;
|
|
|
|
break;
|
|
|
|
default:
|
1999-12-13 17:18:31 +03:00
|
|
|
if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
|
1999-08-01 10:45:28 +04:00
|
|
|
flags |= NI_NUMERICHOST;
|
1999-12-13 17:18:31 +03:00
|
|
|
}
|
1999-08-01 10:45:28 +04:00
|
|
|
else if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))
|
|
|
|
flags |= NI_NUMERICHOST;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
1999-07-01 22:23:53 +04:00
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
if (host == NULL || hostlen == 0) {
|
1999-12-13 17:18:31 +03:00
|
|
|
/*
|
|
|
|
* do nothing in this case.
|
|
|
|
* in case you are wondering if "&&" is more correct than
|
2001-11-15 07:38:32 +03:00
|
|
|
* "||" here: rfc2553bis-03 says that host == NULL or
|
|
|
|
* hostlen == 0 means that the caller does not want the result.
|
1999-12-13 17:18:31 +03:00
|
|
|
*/
|
1999-07-01 22:23:53 +04:00
|
|
|
} else if (flags & NI_NUMERICHOST) {
|
2000-02-09 15:25:06 +03:00
|
|
|
int numaddrlen;
|
|
|
|
|
1999-08-01 10:45:28 +04:00
|
|
|
/* NUMERICHOST and NAMEREQD conflicts with each other */
|
|
|
|
if (flags & NI_NAMEREQD)
|
2001-11-15 07:38:32 +03:00
|
|
|
return EAI_NONAME;
|
2000-02-09 15:25:06 +03:00
|
|
|
|
2000-04-26 20:08:38 +04:00
|
|
|
switch(afd->a_af) {
|
|
|
|
#ifdef INET6
|
|
|
|
case AF_INET6:
|
|
|
|
{
|
|
|
|
int error;
|
2000-02-09 15:25:06 +03:00
|
|
|
|
2000-04-26 20:08:38 +04:00
|
|
|
if ((error = ip6_parsenumeric(sa, addr, host,
|
|
|
|
hostlen, flags)) != 0)
|
|
|
|
return(error);
|
|
|
|
break;
|
|
|
|
}
|
2000-02-16 07:50:23 +03:00
|
|
|
#endif
|
2000-04-26 20:08:38 +04:00
|
|
|
default:
|
|
|
|
if (inet_ntop(afd->a_af, addr, numaddr, sizeof(numaddr))
|
|
|
|
== NULL)
|
2001-11-15 07:38:32 +03:00
|
|
|
return EAI_SYSTEM;
|
2000-04-26 20:08:38 +04:00
|
|
|
numaddrlen = strlen(numaddr);
|
|
|
|
if (numaddrlen + 1 > hostlen) /* don't forget terminator */
|
2001-11-15 07:38:32 +03:00
|
|
|
return EAI_MEMORY;
|
2000-04-26 20:08:38 +04:00
|
|
|
strcpy(host, numaddr);
|
|
|
|
break;
|
1999-12-13 17:18:31 +03:00
|
|
|
}
|
1999-07-01 22:23:53 +04:00
|
|
|
} else {
|
|
|
|
hp = gethostbyaddr(addr, afd->a_addrlen, afd->a_af);
|
|
|
|
|
|
|
|
if (hp) {
|
2000-04-26 20:08:38 +04:00
|
|
|
#if 0
|
|
|
|
/*
|
|
|
|
* commented out, since "for local host" is not
|
|
|
|
* implemented here - see RFC2553 p30
|
|
|
|
*/
|
1999-07-01 22:23:53 +04:00
|
|
|
if (flags & NI_NOFQDN) {
|
2000-04-26 20:08:38 +04:00
|
|
|
char *p;
|
1999-07-01 22:23:53 +04:00
|
|
|
p = strchr(hp->h_name, '.');
|
2000-04-26 20:08:38 +04:00
|
|
|
if (p)
|
|
|
|
*p = '\0';
|
1999-07-01 22:23:53 +04:00
|
|
|
}
|
2000-04-26 20:08:38 +04:00
|
|
|
#endif
|
2000-09-26 03:07:28 +04:00
|
|
|
if (strlen(hp->h_name) + 1 > hostlen) {
|
2001-11-15 07:38:32 +03:00
|
|
|
return EAI_MEMORY;
|
1999-07-01 22:23:53 +04:00
|
|
|
}
|
|
|
|
strcpy(host, hp->h_name);
|
|
|
|
} else {
|
|
|
|
if (flags & NI_NAMEREQD)
|
2001-11-15 07:38:32 +03:00
|
|
|
return EAI_NONAME;
|
2000-04-26 20:08:38 +04:00
|
|
|
switch(afd->a_af) {
|
|
|
|
#ifdef INET6
|
|
|
|
case AF_INET6:
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
|
|
|
|
if ((error = ip6_parsenumeric(sa, addr, host,
|
|
|
|
hostlen,
|
|
|
|
flags)) != 0)
|
|
|
|
return(error);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
default:
|
|
|
|
if (inet_ntop(afd->a_af, addr, host,
|
|
|
|
hostlen) == NULL)
|
2001-11-15 07:38:32 +03:00
|
|
|
return EAI_SYSTEM;
|
2000-04-26 20:08:38 +04:00
|
|
|
break;
|
|
|
|
}
|
1999-07-01 22:23:53 +04:00
|
|
|
}
|
|
|
|
}
|
2001-11-15 07:38:32 +03:00
|
|
|
return(0);
|
1999-07-01 22:23:53 +04:00
|
|
|
}
|
2000-02-09 15:25:06 +03:00
|
|
|
|
|
|
|
#ifdef INET6
|
2000-04-26 20:08:38 +04:00
|
|
|
static int
|
|
|
|
ip6_parsenumeric(sa, addr, host, hostlen, flags)
|
|
|
|
const struct sockaddr *sa;
|
|
|
|
const char *addr;
|
|
|
|
char *host;
|
|
|
|
size_t hostlen;
|
|
|
|
int flags;
|
|
|
|
{
|
|
|
|
int numaddrlen;
|
|
|
|
char numaddr[512];
|
|
|
|
|
2001-01-04 06:56:17 +03:00
|
|
|
_DIAGASSERT(sa != NULL);
|
|
|
|
_DIAGASSERT(addr != NULL);
|
|
|
|
_DIAGASSERT(host != NULL);
|
|
|
|
|
2001-11-15 07:38:32 +03:00
|
|
|
if (inet_ntop(AF_INET6, addr, numaddr, sizeof(numaddr)) == NULL)
|
|
|
|
return EAI_SYSTEM;
|
2000-04-26 20:08:38 +04:00
|
|
|
|
|
|
|
numaddrlen = strlen(numaddr);
|
|
|
|
if (numaddrlen + 1 > hostlen) /* don't forget terminator */
|
2001-11-15 07:38:32 +03:00
|
|
|
return EAI_MEMORY;
|
2000-04-26 20:08:38 +04:00
|
|
|
strcpy(host, numaddr);
|
|
|
|
|
2000-07-06 06:54:12 +04:00
|
|
|
if (((const struct sockaddr_in6 *)(const void *)sa)->sin6_scope_id) {
|
2001-11-15 07:49:01 +03:00
|
|
|
char zonebuf[MAXHOSTNAMELEN];
|
|
|
|
int zonelen;
|
|
|
|
|
|
|
|
zonelen = ip6_sa2str(
|
|
|
|
(const struct sockaddr_in6 *)(const void *)sa,
|
|
|
|
zonebuf, sizeof(zonebuf), flags);
|
|
|
|
if (zonelen < 0)
|
|
|
|
return EAI_MEMORY;
|
|
|
|
if (zonelen + 1 + numaddrlen + 1 > hostlen)
|
|
|
|
return EAI_MEMORY;
|
|
|
|
/* construct <numeric-addr><delim><zoneid> */
|
|
|
|
memcpy(host + numaddrlen + 1, zonebuf,
|
|
|
|
(size_t)zonelen);
|
|
|
|
host[numaddrlen] = SCOPE_DELIMITER;
|
|
|
|
host[numaddrlen + 1 + zonelen] = '\0';
|
2000-04-26 20:08:38 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2000-02-09 15:25:06 +03:00
|
|
|
/* ARGSUSED */
|
2000-04-26 20:08:38 +04:00
|
|
|
static int
|
|
|
|
ip6_sa2str(sa6, buf, bufsiz, flags)
|
|
|
|
const struct sockaddr_in6 *sa6;
|
2000-02-09 15:25:06 +03:00
|
|
|
char *buf;
|
2000-04-26 20:08:38 +04:00
|
|
|
size_t bufsiz;
|
2000-02-09 15:25:06 +03:00
|
|
|
int flags;
|
|
|
|
{
|
2001-01-04 06:56:17 +03:00
|
|
|
unsigned int ifindex;
|
|
|
|
const struct in6_addr *a6;
|
2001-08-19 05:37:39 +04:00
|
|
|
int n;
|
2001-01-04 06:56:17 +03:00
|
|
|
|
|
|
|
_DIAGASSERT(sa6 != NULL);
|
|
|
|
_DIAGASSERT(buf != NULL);
|
2002-03-04 18:15:39 +03:00
|
|
|
|
2001-01-04 06:56:17 +03:00
|
|
|
ifindex = (unsigned int)sa6->sin6_scope_id;
|
|
|
|
a6 = &sa6->sin6_addr;
|
2000-02-09 15:25:06 +03:00
|
|
|
|
2001-08-19 05:37:39 +04:00
|
|
|
#ifdef NI_NUMERICSCOPE
|
|
|
|
if ((flags & NI_NUMERICSCOPE) != 0) {
|
|
|
|
n = snprintf(buf, bufsiz, "%u", sa6->sin6_scope_id);
|
|
|
|
if (n < 0 || n >= bufsiz)
|
|
|
|
return -1;
|
|
|
|
else
|
|
|
|
return n;
|
2000-02-09 15:25:06 +03:00
|
|
|
}
|
|
|
|
#endif
|
2000-06-12 07:55:10 +04:00
|
|
|
|
2000-04-26 20:08:38 +04:00
|
|
|
/* if_indextoname() does not take buffer size. not a good api... */
|
|
|
|
if ((IN6_IS_ADDR_LINKLOCAL(a6) || IN6_IS_ADDR_MC_LINKLOCAL(a6)) &&
|
|
|
|
bufsiz >= IF_NAMESIZE) {
|
|
|
|
char *p = if_indextoname(ifindex, buf);
|
|
|
|
if (p) {
|
|
|
|
return(strlen(p));
|
|
|
|
}
|
|
|
|
}
|
2000-02-09 15:25:06 +03:00
|
|
|
|
2000-04-26 20:08:38 +04:00
|
|
|
/* last resort */
|
2001-08-19 05:37:39 +04:00
|
|
|
n = snprintf(buf, bufsiz, "%u", sa6->sin6_scope_id);
|
|
|
|
if (n < 0 || n >= bufsiz)
|
|
|
|
return -1;
|
|
|
|
else
|
|
|
|
return n;
|
2000-02-09 15:25:06 +03:00
|
|
|
}
|
2000-04-26 20:08:38 +04:00
|
|
|
#endif /* INET6 */
|
2001-10-06 17:59:41 +04:00
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* getnameinfo_link():
|
|
|
|
* Format a link-layer address into a printable format, paying attention to
|
|
|
|
* the interface type.
|
|
|
|
*/
|
|
|
|
/* ARGSUSED */
|
|
|
|
static int
|
|
|
|
getnameinfo_link(const struct sockaddr *sa, socklen_t salen,
|
|
|
|
char *host, size_t hostlen, char *serv, size_t servlen, int flags)
|
|
|
|
{
|
|
|
|
const struct sockaddr_dl *sdl =
|
|
|
|
(const struct sockaddr_dl *)(const void *)sa;
|
|
|
|
const struct ieee1394_hwaddr *iha;
|
|
|
|
int n;
|
|
|
|
|
|
|
|
if (serv != NULL && servlen > 0)
|
|
|
|
*serv = '\0';
|
|
|
|
|
|
|
|
if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && sdl->sdl_slen == 0) {
|
|
|
|
n = snprintf(host, hostlen, "link#%d", sdl->sdl_index);
|
|
|
|
if (n > hostlen) {
|
|
|
|
*host = '\0';
|
|
|
|
return EAI_MEMORY;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (sdl->sdl_type) {
|
|
|
|
#ifdef IFT_ECONET
|
|
|
|
case IFT_ECONET:
|
|
|
|
if (sdl->sdl_alen < 2)
|
|
|
|
return EAI_FAMILY;
|
|
|
|
if (LLADDR(sdl)[1] == 0)
|
|
|
|
n = snprintf(host, hostlen, "%d", LLADDR(sdl)[0]);
|
|
|
|
else
|
|
|
|
n = snprintf(host, hostlen, "%d.%d",
|
|
|
|
LLADDR(sdl)[1], LLADDR(sdl)[0]);
|
|
|
|
if (n >= hostlen) {
|
|
|
|
*host = '\0';
|
|
|
|
return EAI_MEMORY;
|
|
|
|
} else
|
|
|
|
return 0;
|
|
|
|
#endif
|
|
|
|
case IFT_IEEE1394:
|
|
|
|
if (sdl->sdl_alen < sizeof(iha->iha_uid))
|
|
|
|
return EAI_FAMILY;
|
|
|
|
iha =
|
|
|
|
(const struct ieee1394_hwaddr *)(const void *)LLADDR(sdl);
|
|
|
|
return hexname(iha->iha_uid, sizeof(iha->iha_uid),
|
|
|
|
host, hostlen);
|
|
|
|
/*
|
|
|
|
* The following have zero-length addresses.
|
|
|
|
* IFT_ATM (net/if_atmsubr.c)
|
|
|
|
* IFT_FAITH (net/if_faith.c)
|
|
|
|
* IFT_GIF (net/if_gif.c)
|
|
|
|
* IFT_LOOP (net/if_loop.c)
|
|
|
|
* IFT_PPP (net/if_ppp.c, net/if_spppsubr.c)
|
|
|
|
* IFT_SLIP (net/if_sl.c, net/if_strip.c)
|
|
|
|
* IFT_STF (net/if_stf.c)
|
|
|
|
* IFT_L2VLAN (net/if_vlan.c)
|
|
|
|
* IFT_PROPVIRTUAL (net/if_bridge.h>
|
|
|
|
*/
|
|
|
|
/*
|
|
|
|
* The following use IPv4 addresses as link-layer addresses:
|
|
|
|
* IFT_OTHER (net/if_gre.c)
|
|
|
|
*/
|
|
|
|
case IFT_ARCNET: /* default below is believed correct for all these. */
|
|
|
|
case IFT_ETHER:
|
|
|
|
case IFT_FDDI:
|
|
|
|
case IFT_HIPPI:
|
|
|
|
case IFT_ISO88025:
|
|
|
|
default:
|
|
|
|
return hexname((u_int8_t *)LLADDR(sdl), (size_t)sdl->sdl_alen,
|
|
|
|
host, hostlen);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
hexname(cp, len, host, hostlen)
|
|
|
|
const u_int8_t *cp;
|
|
|
|
char *host;
|
|
|
|
size_t len, hostlen;
|
|
|
|
{
|
|
|
|
int i, n;
|
|
|
|
char *outp = host;
|
|
|
|
|
|
|
|
*outp = '\0';
|
|
|
|
for (i = 0; i < len; i++) {
|
|
|
|
n = snprintf(outp, hostlen, "%s%02x",
|
|
|
|
i ? ":" : "", cp[i]);
|
|
|
|
if (n < 0 || n >= hostlen) {
|
|
|
|
*host = '\0';
|
|
|
|
return EAI_MEMORY;
|
|
|
|
}
|
|
|
|
outp += n;
|
|
|
|
hostlen -= n;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|