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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/route/show.c	Lines:	180	315	57.1 %
Date:	2016-12-06	Branches:	122	262	46.6 %


/*	$OpenBSD: show.c,v 1.104 2016/07/13 08:40:46 mpi Exp $	*/
/*	$NetBSD: show.c,v 1.1 1996/11/15 18:01:41 gwr Exp $	*/

/*
 * Copyright (c) 1983, 1988, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * 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 University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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/socket.h>
#include <sys/sysctl.h>

#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <netmpls/mpls.h>
#include <arpa/inet.h>

#include <err.h>
#include <errno.h>
#include <netdb.h>
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>

#include "show.h"

char	*any_ntoa(const struct sockaddr *);
char	*link_print(struct sockaddr *);
char	*label_print(struct sockaddr *);

#define ROUNDUP(a) \
	((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))

/*
 * Definitions for showing gateway flags.
 */
struct bits {
	int	b_mask;
	char	b_val;
};
static const struct bits bits[] = {
	{ RTF_UP,	'U' },
	{ RTF_GATEWAY,	'G' },
	{ RTF_HOST,	'H' },
	{ RTF_REJECT,	'R' },
	{ RTF_BLACKHOLE, 'B' },
	{ RTF_DYNAMIC,	'D' },
	{ RTF_MODIFIED,	'M' },
	{ RTF_DONE,	'd' }, /* Completed -- for routing messages only */
	{ RTF_CLONING,	'C' },
	{ RTF_MULTICAST,'m' },
	{ RTF_LLINFO,	'L' },
	{ RTF_STATIC,	'S' },
	{ RTF_PROTO1,	'1' },
	{ RTF_PROTO2,	'2' },
	{ RTF_PROTO3,	'3' },
	{ RTF_CLONED,	'c' },
	{ RTF_MPATH,	'P' },
	{ RTF_MPLS,	'T' },
	{ RTF_LOCAL,	'l' },
	{ RTF_BROADCAST, 'b' },
	{ 0 }
};

int	 WID_DST(int);
void	 pr_rthdr(int);
void	 p_rtentry(struct rt_msghdr *);
void	 pr_family(int);
void	 p_sockaddr(struct sockaddr *, struct sockaddr *, int, int);
void	 p_sockaddr_mpls(struct sockaddr *, struct sockaddr *, int, int);
void	 p_flags(int, char *);
char	*routename4(in_addr_t);
char	*routename6(struct sockaddr_in6 *);
char	*netname4(in_addr_t, struct sockaddr_in *);
char	*netname6(struct sockaddr_in6 *, struct sockaddr_in6 *);

/*
 * Print routing tables.
 */
void
p_rttables(int af, u_int tableid, int hastable, char prio)
{
	struct rt_msghdr *rtm;
	char *buf = NULL, *next, *lim = NULL;
	size_t needed;
	int mib[7], mcnt;
	struct sockaddr *sa;

	mib[0] = CTL_NET;
	mib[1] = PF_ROUTE;
	mib[2] = 0;
	mib[3] = af;
	mib[4] = NET_RT_DUMP;
	mib[5] = prio;
	if (hastable) {
		mib[6] = tableid;
		mcnt = 7;
	} else
		mcnt = 6;

	while (1) {
		if (sysctl(mib, mcnt, NULL, &needed, NULL, 0) == -1)
			err(1, "route-sysctl-estimate");
		if (needed == 0)
			break;
		if ((buf = realloc(buf, needed)) == NULL)
			err(1, NULL);
		if (sysctl(mib, mcnt, buf, &needed, NULL, 0) == -1) {
			if (errno == ENOMEM)
				continue;
			err(1, "sysctl of routing table");
		}
		lim = buf + needed;
		break;
	}

	if (pledge("stdio rpath dns cpath wpath", NULL) == -1)
		err(1, "pledge");

	printf("Routing tables\n");

	if (buf) {
		for (next = buf; next < lim; next += rtm->rtm_msglen) {
			rtm = (struct rt_msghdr *)next;
			if (rtm->rtm_version != RTM_VERSION)
				continue;
			sa = (struct sockaddr *)(next + rtm->rtm_hdrlen);
			p_rtentry(rtm);
		}
		free(buf);
		buf = NULL;
	}
}

/*
 * column widths; each followed by one space
 * width of destination/gateway column
 * strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4
 */
#define	WID_GW(af)	((af) == AF_INET6 ? (nflag ? 30 : 18) : 18)

int
WID_DST(int af)
{

	if (nflag)
		switch (af) {
		case AF_MPLS:
			return 9;
		case AF_INET6:
			return 34;
		default:
			return 18;
		}
	else
		switch (af) {
		case AF_MPLS:
			return 9;
 		default:
			return 18;
		}
}

/*
 * Print header for routing table columns.
 */
void
pr_rthdr(int af)
{
	switch (af) {
	case PF_KEY:
		printf("%-18s %-5s %-18s %-5s %-5s %-22s\n",
		    "Source", "Port", "Destination",
		    "Port", "Proto", "SA(Address/Proto/Type/Direction)");
		break;
	case PF_MPLS:
		printf("%-9s %-9s %-6s %-18s %-6.6s %5.5s %8.8s %5.5s  %4.4s %s\n",
		    "In label", "Out label", "Op", "Gateway",
		    "Flags", "Refs", "Use", "Mtu", "Prio", "Interface");
		break;
	default:
		printf("%-*.*s %-*.*s %-6.6s %5.5s %8.8s %5.5s  %4.4s %s",
		    WID_DST(af), WID_DST(af), "Destination",
		    WID_GW(af), WID_GW(af), "Gateway",
		    "Flags", "Refs", "Use", "Mtu", "Prio", "Iface");
		if (verbose)
			printf(" %s", "Label");
		putchar('\n');
		break;
	}
}

static void
get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info)
{
	int	i;

	for (i = 0; i < RTAX_MAX; i++) {
		if (addrs & (1 << i)) {
			rti_info[i] = sa;
			sa = (struct sockaddr *)((char *)(sa) +
			    ROUNDUP(sa->sa_len));
		} else
			rti_info[i] = NULL;
	}
}

/*
 * Print a routing table entry.
 */
void
p_rtentry(struct rt_msghdr *rtm)
{
	static int	 old_af = -1;
	struct sockaddr	*sa = (struct sockaddr *)((char *)rtm + rtm->rtm_hdrlen);
	struct sockaddr	*mask, *rti_info[RTAX_MAX];
	char		 ifbuf[IF_NAMESIZE];
	char		*label;

	if (sa->sa_family == AF_KEY)
		return;

	get_rtaddrs(rtm->rtm_addrs, sa, rti_info);

	if (Fflag && rti_info[RTAX_GATEWAY]->sa_family != sa->sa_family) {
		return;
	}

	if (strlen(so_label.rtlabel.sr_label)) {
		if (!rti_info[RTAX_LABEL])
			return;
		label = ((struct sockaddr_rtlabel *)rti_info[RTAX_LABEL])->
		    sr_label;
		if (strcmp(label, so_label.rtlabel.sr_label))
			return;
	}

	if (old_af != sa->sa_family) {
		old_af = sa->sa_family;
		pr_family(sa->sa_family);
		pr_rthdr(sa->sa_family);
	}

	mask = rti_info[RTAX_NETMASK];
	if ((sa = rti_info[RTAX_DST]) == NULL)
		return;

	p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family));
	p_sockaddr_mpls(sa, rti_info[RTAX_SRC], rtm->rtm_mpls,
	    WID_DST(sa->sa_family));

	p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST,
	    WID_GW(sa->sa_family));

	p_flags(rtm->rtm_flags, "%-6.6s ");
	printf("%5u %8llu ", rtm->rtm_rmx.rmx_refcnt,
	    rtm->rtm_rmx.rmx_pksent);
	if (rtm->rtm_rmx.rmx_mtu)
		printf("%5u ", rtm->rtm_rmx.rmx_mtu);
	else
		printf("%5s ", "-");
	putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' ');
	printf("  %2d %-5.16s", rtm->rtm_priority,
	    if_indextoname(rtm->rtm_index, ifbuf));
	if (verbose && rti_info[RTAX_LABEL])
		printf(" %s", ((struct sockaddr_rtlabel *)
		    rti_info[RTAX_LABEL])->sr_label);
	putchar('\n');
}

/*
 * Print address family header before a section of the routing table.
 */
void
pr_family(int af)
{
	char *afname;

	switch (af) {
	case AF_INET:
		afname = "Internet";
		break;
	case AF_INET6:
		afname = "Internet6";
		break;
	case PF_KEY:
		afname = "Encap";
		break;
	case AF_MPLS:
		afname = "MPLS";
		break;
	default:
		afname = NULL;
		break;
	}
	if (afname)
		printf("\n%s:\n", afname);
	else
		printf("\nProtocol Family %d:\n", af);
}

void
p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width)
{
	char *cp;

	switch (sa->sa_family) {
	case AF_INET6:
	    {
		struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
		struct in6_addr *in6 = &sa6->sin6_addr;

		/*
		 * XXX: This is a special workaround for KAME kernels.
		 * sin6_scope_id field of SA should be set in the future.
		 */
		if (IN6_IS_ADDR_LINKLOCAL(in6) ||
		    IN6_IS_ADDR_MC_LINKLOCAL(in6) ||
		    IN6_IS_ADDR_MC_INTFACELOCAL(in6)) {
			/* XXX: override is ok? */
			sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)
			    &in6->s6_addr[2]);
			*(u_short *)&in6->s6_addr[2] = 0;
		}
		if (flags & RTF_HOST)
			cp = routename((struct sockaddr *)sa6);
		else
			cp = netname((struct sockaddr *)sa6, mask);
		break;
	    }
	case AF_MPLS:
		return;
	default:
		if ((flags & RTF_HOST) || mask == NULL)
			cp = routename(sa);
		else
			cp = netname(sa, mask);
		break;
	}
	if (width < 0)
		printf("%s", cp);
	else {
		if (nflag)
			printf("%-*s ", width, cp);
		else
			printf("%-*.*s ", width, width, cp);
	}
}

static char line[HOST_NAME_MAX+1];
static char domain[HOST_NAME_MAX+1];

void
p_sockaddr_mpls(struct sockaddr *in, struct sockaddr *out, int flags, int width)
{
	if (in->sa_family != AF_MPLS)
		return;

	if (flags & MPLS_OP_POP || flags == MPLS_OP_LOCAL) {
		printf("%-*s ", width, label_print(in));
		printf("%-*s ", width, label_print(NULL));
	} else {
		printf("%-*s ", width, label_print(in));
		printf("%-*s ", width, label_print(out));
	}

	printf("%-6s ", mpls_op(flags));
}

void
p_flags(int f, char *format)
{
	char name[33], *flags;
	const struct bits *p = bits;

	for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++)
		if (p->b_mask & f)
			*flags++ = p->b_val;
	*flags = '\0';
	printf(format, name);
}

char *
routename(struct sockaddr *sa)
{
	char *cp = NULL;
	static int first = 1;

	if (first) {
		first = 0;
		if (gethostname(domain, sizeof(domain)) == 0 &&
		    (cp = strchr(domain, '.')))
			(void)strlcpy(domain, cp + 1, sizeof(domain));
		else
			domain[0] = '\0';
		cp = NULL;
	}

	if (sa->sa_len == 0) {
		(void)strlcpy(line, "default", sizeof(line));
		return (line);
	}

	switch (sa->sa_family) {
	case AF_INET:
		return
		    (routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr));

	case AF_INET6:
	    {
		struct sockaddr_in6 sin6;

		memset(&sin6, 0, sizeof(sin6));
		memcpy(&sin6, sa, sa->sa_len);
		sin6.sin6_len = sizeof(struct sockaddr_in6);
		sin6.sin6_family = AF_INET6;
		if (sa->sa_len == sizeof(struct sockaddr_in6) &&
		    (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
		     IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) ||
		     IN6_IS_ADDR_MC_INTFACELOCAL(&sin6.sin6_addr)) &&
		    sin6.sin6_scope_id == 0) {
			sin6.sin6_scope_id =
			    ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
			sin6.sin6_addr.s6_addr[2] = 0;
			sin6.sin6_addr.s6_addr[3] = 0;
		}
		return (routename6(&sin6));
	    }

	case AF_LINK:
		return (link_print(sa));
	case AF_MPLS:
		return (label_print(sa));
	case AF_UNSPEC:
		if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) {
			static char name[RTLABEL_LEN];
			struct sockaddr_rtlabel *sr;

			sr = (struct sockaddr_rtlabel *)sa;
			(void)strlcpy(name, sr->sr_label, sizeof(name));
			return (name);
		}
		/* FALLTHROUGH */
	default:
		(void)snprintf(line, sizeof(line), "(%d) %s",
		    sa->sa_family, any_ntoa(sa));
		break;
	}
	return (line);
}

char *
routename4(in_addr_t in)
{
	char		*cp = NULL;
	struct in_addr	 ina;
	struct hostent	*hp;

	if (in == INADDR_ANY)
		cp = "default";
	if (!cp && !nflag) {
		if ((hp = gethostbyaddr((char *)&in,
		    sizeof(in), AF_INET)) != NULL) {
			if ((cp = strchr(hp->h_name, '.')) &&
			    !strcmp(cp + 1, domain))
				*cp = '\0';
			cp = hp->h_name;
		}
	}
	ina.s_addr = in;
	strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line));

	return (line);
}

char *
routename6(struct sockaddr_in6 *sin6)
{
	int	 niflags = 0;

	if (nflag)
		niflags |= NI_NUMERICHOST;
	else
		niflags |= NI_NOFQDN;

	if (getnameinfo((struct sockaddr *)sin6, sin6->sin6_len,
	    line, sizeof(line), NULL, 0, niflags) != 0)
		strncpy(line, "invalid", sizeof(line));

	return (line);
}

/*
 * Return the name of the network whose address is given.
 * The address is assumed to be that of a net or subnet, not a host.
 */
char *
netname4(in_addr_t in, struct sockaddr_in *maskp)
{
	char *cp = NULL;
	struct netent *np = NULL;
	in_addr_t mask;
	int mbits;

	in = ntohl(in);
	mask = maskp && maskp->sin_len != 0 ? ntohl(maskp->sin_addr.s_addr) : 0;
	if (!nflag && in != INADDR_ANY) {
		if ((np = getnetbyaddr(in, AF_INET)) != NULL)
			cp = np->n_name;
	}
	if (in == INADDR_ANY && mask == INADDR_ANY)
		cp = "default";
	mbits = mask ? 33 - ffs(mask) : 0;
	if (cp)
		strlcpy(line, cp, sizeof(line));
#define C(x)	((x) & 0xff)
	else if (mbits < 9)
		snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits);
	else if (mbits < 17)
		snprintf(line, sizeof(line), "%u.%u/%d",
		    C(in >> 24) , C(in >> 16), mbits);
	else if (mbits < 25)
		snprintf(line, sizeof(line), "%u.%u.%u/%d",
		    C(in >> 24), C(in >> 16), C(in >> 8), mbits);
	else
		snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24),
		    C(in >> 16), C(in >> 8), C(in), mbits);
#undef C
	return (line);
}

char *
netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask)
{
	struct sockaddr_in6 sin6;
	u_char *p;
	int masklen, final = 0, illegal = 0;
	int i, lim, flag, error;
	char hbuf[NI_MAXHOST];

	sin6 = *sa6;

	flag = 0;
	masklen = 0;
	if (mask) {
		lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr);
		lim = lim < (int)sizeof(struct in6_addr) ?
		    lim : (int)sizeof(struct in6_addr);
		for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) {
			if (final && *p) {
				illegal++;
				sin6.sin6_addr.s6_addr[i++] = 0x00;
				continue;
			}

			switch (*p & 0xff) {
			case 0xff:
				masklen += 8;
				break;
			case 0xfe:
				masklen += 7;
				final++;
				break;
			case 0xfc:
				masklen += 6;
				final++;
				break;
			case 0xf8:
				masklen += 5;
				final++;
				break;
			case 0xf0:
				masklen += 4;
				final++;
				break;
			case 0xe0:
				masklen += 3;
				final++;
				break;
			case 0xc0:
				masklen += 2;
				final++;
				break;
			case 0x80:
				masklen += 1;
				final++;
				break;
			case 0x00:
				final++;
				break;
			default:
				final++;
				illegal++;
				break;
			}

			if (!illegal)
				sin6.sin6_addr.s6_addr[i++] &= *p;
			else
				sin6.sin6_addr.s6_addr[i++] = 0x00;
		}
		while (i < (int)sizeof(struct in6_addr))
			sin6.sin6_addr.s6_addr[i++] = 0x00;
	} else
		masklen = 128;

	if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr))
		return ("default");

	if (illegal)
		warnx("illegal prefixlen");

	if (nflag)
		flag |= NI_NUMERICHOST;
	error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
	    hbuf, sizeof(hbuf), NULL, 0, flag);
	if (error)
		snprintf(hbuf, sizeof(hbuf), "invalid");

	snprintf(line, sizeof(line), "%s/%d", hbuf, masklen);
	return (line);
}

/*
 * Return the name of the network whose address is given.
 * The address is assumed to be that of a net or subnet, not a host.
 */
char *
netname(struct sockaddr *sa, struct sockaddr *mask)
{
	switch (sa->sa_family) {
	case AF_INET:
		return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr,
		    (struct sockaddr_in *)mask);
	case AF_INET6:
		return netname6((struct sockaddr_in6 *)sa,
		    (struct sockaddr_in6 *)mask);
	case AF_LINK:
		return (link_print(sa));
	case AF_MPLS:
		return (label_print(sa));
	default:
		snprintf(line, sizeof(line), "af %d: %s",
		    sa->sa_family, any_ntoa(sa));
		break;
	}
	return (line);
}

static const char hexlist[] = "0123456789abcdef";

char *
any_ntoa(const struct sockaddr *sa)
{
	static char obuf[240];
	const char *in = sa->sa_data;
	char *out = obuf;
	int len = sa->sa_len - offsetof(struct sockaddr, sa_data);

	*out++ = 'Q';
	do {
		*out++ = hexlist[(*in >> 4) & 15];
		*out++ = hexlist[(*in++)    & 15];
		*out++ = '.';
	} while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]);
	out[-1] = '\0';
	return (obuf);
}

char *
link_print(struct sockaddr *sa)
{
	struct sockaddr_dl	*sdl = (struct sockaddr_dl *)sa;
	u_char			*lla = (u_char *)sdl->sdl_data + sdl->sdl_nlen;

	if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
	    sdl->sdl_slen == 0) {
		(void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index);
		return (line);
	}
	switch (sdl->sdl_type) {
	case IFT_ETHER:
	case IFT_CARP:
		return (ether_ntoa((struct ether_addr *)lla));
	default:
		return (link_ntoa(sdl));
	}
}

char *
mpls_op(u_int32_t type)
{
	switch (type & (MPLS_OP_PUSH | MPLS_OP_POP | MPLS_OP_SWAP)) {
	case MPLS_OP_LOCAL:
		return ("LOCAL");
	case MPLS_OP_POP:
		return ("POP");
	case MPLS_OP_SWAP:
		return ("SWAP");
	case MPLS_OP_PUSH:
		return ("PUSH");
	default:
		return ("?");
	}
}

char *
label_print(struct sockaddr *sa)
{
	struct sockaddr_mpls	*smpls = (struct sockaddr_mpls *)sa;

	if (smpls)
		(void)snprintf(line, sizeof(line), "%u",
		    ntohl(smpls->smpls_label) >> MPLS_LABEL_OFFSET);
	else
		(void)snprintf(line, sizeof(line), "-");

	return (line);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: show.c,v 1.104 2016/07/13 08:40:46 mpi Exp $ */
2			/* $NetBSD: show.c,v 1.1 1996/11/15 18:01:41 gwr Exp $ */
3
4			/*
5			* Copyright (c) 1983, 1988, 1993
6			* The Regents of the University of California. All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			* 1. Redistributions of source code must retain the above copyright
12			* notice, this list of conditions and the following disclaimer.
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			* 3. Neither the name of the University nor the names of its contributors
17			* may be used to endorse or promote products derived from this software
18			* without specific prior written permission.
19			*
20			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30			* SUCH DAMAGE.
31			*/
32
33			#include <sys/socket.h>
34			#include <sys/sysctl.h>
35
36			#include <net/if.h>
37			#include <net/if_dl.h>
38			#include <net/if_types.h>
39			#include <net/route.h>
40			#include <netinet/in.h>
41			#include <netinet/if_ether.h>
42			#include <netmpls/mpls.h>
43			#include <arpa/inet.h>
44
45			#include <err.h>
46			#include <errno.h>
47			#include <netdb.h>
48			#include <stdio.h>
49			#include <stddef.h>
50			#include <stdlib.h>
51			#include <string.h>
52			#include <unistd.h>
53			#include <limits.h>
54
55			#include "show.h"
56
57			char any_ntoa(const struct sockaddr );
58			char link_print(struct sockaddr );
59			char label_print(struct sockaddr );
60
61			#define ROUNDUP(a) \
62			((a) > 0 ? (1 + (((a) - 1) \| (sizeof(long) - 1))) : sizeof(long))
63			#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
64
65			/*
66			* Definitions for showing gateway flags.
67			*/
68			struct bits {
69			int b_mask;
70			char b_val;
71			};
72			static const struct bits bits[] = {
73			{ RTF_UP, 'U' },
74			{ RTF_GATEWAY, 'G' },
75			{ RTF_HOST, 'H' },
76			{ RTF_REJECT, 'R' },
77			{ RTF_BLACKHOLE, 'B' },
78			{ RTF_DYNAMIC, 'D' },
79			{ RTF_MODIFIED, 'M' },
80			{ RTF_DONE, 'd' }, /* Completed -- for routing messages only */
81			{ RTF_CLONING, 'C' },
82			{ RTF_MULTICAST,'m' },
83			{ RTF_LLINFO, 'L' },
84			{ RTF_STATIC, 'S' },
85			{ RTF_PROTO1, '1' },
86			{ RTF_PROTO2, '2' },
87			{ RTF_PROTO3, '3' },
88			{ RTF_CLONED, 'c' },
89			{ RTF_MPATH, 'P' },
90			{ RTF_MPLS, 'T' },
91			{ RTF_LOCAL, 'l' },
92			{ RTF_BROADCAST, 'b' },
93			{ 0 }
94			};
95
96			int WID_DST(int);
97			void pr_rthdr(int);
98			void p_rtentry(struct rt_msghdr *);
99			void pr_family(int);
100			void p_sockaddr(struct sockaddr , struct sockaddr , int, int);
101			void p_sockaddr_mpls(struct sockaddr , struct sockaddr , int, int);
102			void p_flags(int, char *);
103			char *routename4(in_addr_t);
104			char routename6(struct sockaddr_in6 );
105			char netname4(in_addr_t, struct sockaddr_in );
106			char netname6(struct sockaddr_in6 , struct sockaddr_in6 *);
107
108			/*
109			* Print routing tables.
110			*/
111			void
112			p_rttables(int af, u_int tableid, int hastable, char prio)
113		5	{
114			struct rt_msghdr *rtm;
115		5	char buf = NULL, next, *lim = NULL;
116			size_t needed;
117			int mib[7], mcnt;
118			struct sockaddr *sa;
119
120		5	mib[0] = CTL_NET;
121		5	mib[1] = PF_ROUTE;
122		5	mib[2] = 0;
123		5	mib[3] = af;
124		5	mib[4] = NET_RT_DUMP;
125		5	mib[5] = prio;
126	✓✗	5	if (hastable) {
127		5	mib[6] = tableid;
128		5	mcnt = 7;
129			} else
130			mcnt = 6;
131
132			while (1) {
133	✗✓	5	if (sysctl(mib, mcnt, NULL, &needed, NULL, 0) == -1)
134			err(1, "route-sysctl-estimate");
135	✗✓	5	if (needed == 0)
136			break;
137	✗✓	5	if ((buf = realloc(buf, needed)) == NULL)
138			err(1, NULL);
139	✗✓	5	if (sysctl(mib, mcnt, buf, &needed, NULL, 0) == -1) {
140			if (errno == ENOMEM)
141			continue;
142			err(1, "sysctl of routing table");
143			}
144		5	lim = buf + needed;
145		5	break;
146			}
147
148	✗✓	5	if (pledge("stdio rpath dns cpath wpath", NULL) == -1)
149			err(1, "pledge");
150
151		5	printf("Routing tables\n");
152
153	✓✗	5	if (buf) {
154	✓✓	82	for (next = buf; next < lim; next += rtm->rtm_msglen) {
155		77	rtm = (struct rt_msghdr *)next;
156	✗✓	77	if (rtm->rtm_version != RTM_VERSION)
157			continue;
158		77	sa = (struct sockaddr *)(next + rtm->rtm_hdrlen);
159		77	p_rtentry(rtm);
160			}
161		5	free(buf);
162		5	buf = NULL;
163			}
164		5	}
165
166			/*
167			* column widths; each followed by one space
168			* width of destination/gateway column
169			* strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4
170			*/
171			#define WID_GW(af) ((af) == AF_INET6 ? (nflag ? 30 : 18) : 18)
172
173			int
174			WID_DST(int af)
175		164	{
176
177	✓✗	164	if (nflag)
178	✗✓✓	164	switch (af) {
179			case AF_MPLS:
180			return 9;
181			case AF_INET6:
182		28	return 34;
183			default:
184		136	return 18;
185			}
186			else
187			switch (af) {
188			case AF_MPLS:
189			return 9;
190			default:
191			return 18;
192			}
193			}
194
195			/*
196			* Print header for routing table columns.
197			*/
198			void
199			pr_rthdr(int af)
200		5	{
201	✗✗✓	5	switch (af) {
202			case PF_KEY:
203			printf("%-18s %-5s %-18s %-5s %-5s %-22s\n",
204			"Source", "Port", "Destination",
205			"Port", "Proto", "SA(Address/Proto/Type/Direction)");
206			break;
207			case PF_MPLS:
208			printf("%-9s %-9s %-6s %-18s %-6.6s %5.5s %8.8s %5.5s %4.4s %s\n",
209			"In label", "Out label", "Op", "Gateway",
210			"Flags", "Refs", "Use", "Mtu", "Prio", "Interface");
211			break;
212			default:
213	✓✓✓✗ ✓✓✓✗	5	printf("%-.s %-.s %-6.6s %5.5s %8.8s %5.5s %4.4s %s",
214			WID_DST(af), WID_DST(af), "Destination",
215			WID_GW(af), WID_GW(af), "Gateway",
216			"Flags", "Refs", "Use", "Mtu", "Prio", "Iface");
217	✗✓	5	if (verbose)
218			printf(" %s", "Label");
219	✓✗	5	putchar('\n');
220			break;
221			}
222		5	}
223
224			static void
225			get_rtaddrs(int addrs, struct sockaddr sa, struct sockaddr *rti_info)
226		77	{
227			int i;
228
229	✓✓	924	for (i = 0; i < RTAX_MAX; i++) {
230	✓✓	847	if (addrs & (1 << i)) {
231		385	rti_info[i] = sa;
232	✓✗	385	sa = (struct sockaddr )((char )(sa) +
233			ROUNDUP(sa->sa_len));
234			} else
235		462	rti_info[i] = NULL;
236			}
237		77	}
238
239			/*
240			* Print a routing table entry.
241			*/
242			void
243			p_rtentry(struct rt_msghdr *rtm)
244		77	{
245			static int old_af = -1;
246		77	struct sockaddr sa = (struct sockaddr )((char *)rtm + rtm->rtm_hdrlen);
247			struct sockaddr mask, rti_info[RTAX_MAX];
248			char ifbuf[IF_NAMESIZE];
249			char *label;
250
251	✗✓	77	if (sa->sa_family == AF_KEY)
252			return;
253
254		77	get_rtaddrs(rtm->rtm_addrs, sa, rti_info);
255
256	✗✓✗✗	77	if (Fflag && rti_info[RTAX_GATEWAY]->sa_family != sa->sa_family) {
257			return;
258			}
259
260	✗✓	77	if (strlen(so_label.rtlabel.sr_label)) {
261			if (!rti_info[RTAX_LABEL])
262			return;
263			label = ((struct sockaddr_rtlabel *)rti_info[RTAX_LABEL])->
264			sr_label;
265			if (strcmp(label, so_label.rtlabel.sr_label))
266			return;
267			}
268
269	✓✓	77	if (old_af != sa->sa_family) {
270		5	old_af = sa->sa_family;
271		5	pr_family(sa->sa_family);
272		5	pr_rthdr(sa->sa_family);
273			}
274
275		77	mask = rti_info[RTAX_NETMASK];
276	✗✓	77	if ((sa = rti_info[RTAX_DST]) == NULL)
277			return;
278
279		77	p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family));
280		77	p_sockaddr_mpls(sa, rti_info[RTAX_SRC], rtm->rtm_mpls,
281			WID_DST(sa->sa_family));
282
283	✓✓✓✗	77	p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST,
284			WID_GW(sa->sa_family));
285
286		77	p_flags(rtm->rtm_flags, "%-6.6s ");
287		77	printf("%5u %8llu ", rtm->rtm_rmx.rmx_refcnt,
288			rtm->rtm_rmx.rmx_pksent);
289	✓✗	77	if (rtm->rtm_rmx.rmx_mtu)
290		77	printf("%5u ", rtm->rtm_rmx.rmx_mtu);
291			else
292			printf("%5s ", "-");
293	✓✗✗✓ ✗✗	77	putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' ');
294		77	printf(" %2d %-5.16s", rtm->rtm_priority,
295			if_indextoname(rtm->rtm_index, ifbuf));
296	✗✓✗✗	77	if (verbose && rti_info[RTAX_LABEL])
297			printf(" %s", ((struct sockaddr_rtlabel *)
298			rti_info[RTAX_LABEL])->sr_label);
299	✓✗	77	putchar('\n');
300			}
301
302			/*
303			* Print address family header before a section of the routing table.
304			*/
305			void
306			pr_family(int af)
307		5	{
308			char *afname;
309
310	✓✓✗✗ ✗	5	switch (af) {
311			case AF_INET:
312		4	afname = "Internet";
313		4	break;
314			case AF_INET6:
315		1	afname = "Internet6";
316		1	break;
317			case PF_KEY:
318			afname = "Encap";
319			break;
320			case AF_MPLS:
321			afname = "MPLS";
322			break;
323			default:
324			afname = NULL;
325			break;
326			}
327	✓✗	5	if (afname)
328		5	printf("\n%s:\n", afname);
329			else
330			printf("\nProtocol Family %d:\n", af);
331		5	}
332
333			void
334			p_sockaddr(struct sockaddr sa, struct sockaddr mask, int flags, int width)
335		154	{
336			char *cp;
337
338	✓✓✗	154	switch (sa->sa_family) {
339			case AF_INET6:
340			{
341		26	struct sockaddr_in6 sa6 = (struct sockaddr_in6 )sa;
342		26	struct in6_addr *in6 = &sa6->sin6_addr;
343
344			/*
345			* XXX: This is a special workaround for KAME kernels.
346			* sin6_scope_id field of SA should be set in the future.
347			*/
348	✓✓✗✓ ✓✓✓✓ ✓✓✓✗	26	if (IN6_IS_ADDR_LINKLOCAL(in6) \|\|
349			IN6_IS_ADDR_MC_LINKLOCAL(in6) \|\|
350			IN6_IS_ADDR_MC_INTFACELOCAL(in6)) {
351			/* XXX: override is ok? */
352	✗✓	12	sa6->sin6_scope_id = (u_int32_t)ntohs((u_short )
353			&in6->s6_addr[2]);
354		12	(u_short )&in6->s6_addr[2] = 0;
355			}
356	✓✓	26	if (flags & RTF_HOST)
357		20	cp = routename((struct sockaddr *)sa6);
358			else
359		6	cp = netname((struct sockaddr *)sa6, mask);
360			break;
361			}
362			case AF_MPLS:
363			return;
364			default:
365	✓✓	128	if ((flags & RTF_HOST) \|\| mask == NULL)
366		80	cp = routename(sa);
367			else
368		48	cp = netname(sa, mask);
369			break;
370			}
371	✗✓	154	if (width < 0)
372			printf("%s", cp);
373			else {
374	✓✗	154	if (nflag)
375		154	printf("%-*s ", width, cp);
376			else
377			printf("%-.s ", width, width, cp);
378			}
379			}
380
381			static char line[HOST_NAME_MAX+1];
382			static char domain[HOST_NAME_MAX+1];
383
384			void
385			p_sockaddr_mpls(struct sockaddr in, struct sockaddr out, int flags, int width)
386		77	{
387	✓✗	77	if (in->sa_family != AF_MPLS)
388		77	return;
389
390			if (flags & MPLS_OP_POP \|\| flags == MPLS_OP_LOCAL) {
391			printf("%-*s ", width, label_print(in));
392			printf("%-*s ", width, label_print(NULL));
393			} else {
394			printf("%-*s ", width, label_print(in));
395			printf("%-*s ", width, label_print(out));
396			}
397
398			printf("%-6s ", mpls_op(flags));
399			}
400
401			void
402			p_flags(int f, char *format)
403		77	{
404			char name[33], *flags;
405		77	const struct bits *p = bits;
406
407	✓✓✓✗	1617	for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++)
408	✓✓	1540	if (p->b_mask & f)
409		237	*flags++ = p->b_val;
410		77	*flags = '\0';
411		77	printf(format, name);
412		77	}
413
414			char *
415			routename(struct sockaddr *sa)
416		105	{
417		105	char *cp = NULL;
418			static int first = 1;
419
420	✓✓	105	if (first) {
421		6	first = 0;
422	✓✗✓✗	12	if (gethostname(domain, sizeof(domain)) == 0 &&
423			(cp = strchr(domain, '.')))
424		6	(void)strlcpy(domain, cp + 1, sizeof(domain));
425			else
426			domain[0] = '\0';
427		6	cp = NULL;
428			}
429
430	✗✓	105	if (sa->sa_len == 0) {
431			(void)strlcpy(line, "default", sizeof(line));
432			return (line);
433			}
434
435	✓✓✗✗ ✗✗	105	switch (sa->sa_family) {
436			case AF_INET:
437		80	return
438			(routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr));
439
440			case AF_INET6:
441			{
442			struct sockaddr_in6 sin6;
443
444		25	memset(&sin6, 0, sizeof(sin6));
445		25	memcpy(&sin6, sa, sa->sa_len);
446		25	sin6.sin6_len = sizeof(struct sockaddr_in6);
447		25	sin6.sin6_family = AF_INET6;
448	✓✗✓✓ ✗✓✓✓ ✓✗✓✓ ✗✓✗✓	25	if (sa->sa_len == sizeof(struct sockaddr_in6) &&
449			(IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) \|\|
450			IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) \|\|
451			IN6_IS_ADDR_MC_INTFACELOCAL(&sin6.sin6_addr)) &&
452			sin6.sin6_scope_id == 0) {
453			sin6.sin6_scope_id =
454			ntohs((u_int16_t )&sin6.sin6_addr.s6_addr[2]);
455			sin6.sin6_addr.s6_addr[2] = 0;
456			sin6.sin6_addr.s6_addr[3] = 0;
457			}
458		25	return (routename6(&sin6));
459			}
460
461			case AF_LINK:
462			return (link_print(sa));
463			case AF_MPLS:
464			return (label_print(sa));
465			case AF_UNSPEC:
466			if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) {
467			static char name[RTLABEL_LEN];
468			struct sockaddr_rtlabel *sr;
469
470			sr = (struct sockaddr_rtlabel *)sa;
471			(void)strlcpy(name, sr->sr_label, sizeof(name));
472			return (name);
473			}
474			/* FALLTHROUGH */
475			default:
476			(void)snprintf(line, sizeof(line), "(%d) %s",
477			sa->sa_family, any_ntoa(sa));
478			break;
479			}
480			return (line);
481			}
482
483			char *
484			routename4(in_addr_t in)
485		80	{
486		80	char *cp = NULL;
487			struct in_addr ina;
488			struct hostent *hp;
489
490	✗✓	80	if (in == INADDR_ANY)
491			cp = "default";
492	✓✗✗✓	80	if (!cp && !nflag) {
493			if ((hp = gethostbyaddr((char *)&in,
494			sizeof(in), AF_INET)) != NULL) {
495			if ((cp = strchr(hp->h_name, '.')) &&
496			!strcmp(cp + 1, domain))
497			*cp = '\0';
498			cp = hp->h_name;
499			}
500			}
501		80	ina.s_addr = in;
502	✓✗	80	strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line));
503
504		80	return (line);
505			}
506
507			char *
508			routename6(struct sockaddr_in6 *sin6)
509		25	{
510		25	int niflags = 0;
511
512	✓✗	25	if (nflag)
513		25	niflags \|= NI_NUMERICHOST;
514			else
515			niflags \|= NI_NOFQDN;
516
517	✗✓	25	if (getnameinfo((struct sockaddr *)sin6, sin6->sin6_len,
518			line, sizeof(line), NULL, 0, niflags) != 0)
519			strncpy(line, "invalid", sizeof(line));
520
521		25	return (line);
522			}
523
524			/*
525			* Return the name of the network whose address is given.
526			* The address is assumed to be that of a net or subnet, not a host.
527			*/
528			char *
529			netname4(in_addr_t in, struct sockaddr_in *maskp)
530		48	{
531		48	char *cp = NULL;
532		48	struct netent *np = NULL;
533			in_addr_t mask;
534			int mbits;
535
536	✗✓	48	in = ntohl(in);
537	✓✗✓✗ ✗✓	48	mask = maskp && maskp->sin_len != 0 ? ntohl(maskp->sin_addr.s_addr) : 0;
538	✗✓	48	if (!nflag && in != INADDR_ANY) {
539			if ((np = getnetbyaddr(in, AF_INET)) != NULL)
540			cp = np->n_name;
541			}
542	✗✓	48	if (in == INADDR_ANY && mask == INADDR_ANY)
543			cp = "default";
544	✓✗	48	mbits = mask ? 33 - ffs(mask) : 0;
545	✗✓	48	if (cp)
546			strlcpy(line, cp, sizeof(line));
547			#define C(x) ((x) & 0xff)
548	✓✓	48	else if (mbits < 9)
549		4	snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits);
550	✓✓	44	else if (mbits < 17)
551		12	snprintf(line, sizeof(line), "%u.%u/%d",
552			C(in >> 24) , C(in >> 16), mbits);
553	✓✗	32	else if (mbits < 25)
554		32	snprintf(line, sizeof(line), "%u.%u.%u/%d",
555			C(in >> 24), C(in >> 16), C(in >> 8), mbits);
556			else
557			snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24),
558			C(in >> 16), C(in >> 8), C(in), mbits);
559			#undef C
560		48	return (line);
561			}
562
563			char *
564			netname6(struct sockaddr_in6 sa6, struct sockaddr_in6 mask)
565		6	{
566			struct sockaddr_in6 sin6;
567			u_char *p;
568		6	int masklen, final = 0, illegal = 0;
569			int i, lim, flag, error;
570			char hbuf[NI_MAXHOST];
571
572		6	sin6 = *sa6;
573
574		6	flag = 0;
575		6	masklen = 0;
576	✓✗	6	if (mask) {
577		6	lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr);
578		6	lim = lim < (int)sizeof(struct in6_addr) ?
579			lim : (int)sizeof(struct in6_addr);
580	✓✓	102	for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) {
581	✓✓✗✓	96	if (final && *p) {
582			illegal++;
583			sin6.sin6_addr.s6_addr[i++] = 0x00;
584			continue;
585			}
586
587	✓✗✗✗ ✗✗✗✗ ✓✗	96	switch (*p & 0xff) {
588			case 0xff:
589		24	masklen += 8;
590		24	break;
591			case 0xfe:
592			masklen += 7;
593			final++;
594			break;
595			case 0xfc:
596			masklen += 6;
597			final++;
598			break;
599			case 0xf8:
600			masklen += 5;
601			final++;
602			break;
603			case 0xf0:
604			masklen += 4;
605			final++;
606			break;
607			case 0xe0:
608			masklen += 3;
609			final++;
610			break;
611			case 0xc0:
612			masklen += 2;
613			final++;
614			break;
615			case 0x80:
616			masklen += 1;
617			final++;
618			break;
619			case 0x00:
620		72	final++;
621		72	break;
622			default:
623			final++;
624			illegal++;
625			break;
626			}
627
628	✓✗	96	if (!illegal)
629		96	sin6.sin6_addr.s6_addr[i++] &= *p;
630			else
631			sin6.sin6_addr.s6_addr[i++] = 0x00;
632			}
633	✗✓	6	while (i < (int)sizeof(struct in6_addr))
634			sin6.sin6_addr.s6_addr[i++] = 0x00;
635			} else
636			masklen = 128;
637
638	✗✓✗✗ ✗✗✗✗ ✗✗	6	if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr))
639			return ("default");
640
641	✗✓	6	if (illegal)
642			warnx("illegal prefixlen");
643
644	✓✗	6	if (nflag)
645		6	flag \|= NI_NUMERICHOST;
646		6	error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
647			hbuf, sizeof(hbuf), NULL, 0, flag);
648	✗✓	6	if (error)
649			snprintf(hbuf, sizeof(hbuf), "invalid");
650
651		6	snprintf(line, sizeof(line), "%s/%d", hbuf, masklen);
652		6	return (line);
653			}
654
655			/*
656			* Return the name of the network whose address is given.
657			* The address is assumed to be that of a net or subnet, not a host.
658			*/
659			char *
660			netname(struct sockaddr sa, struct sockaddr mask)
661		54	{
662	✓✓✗✗ ✗	54	switch (sa->sa_family) {
663			case AF_INET:
664		48	return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr,
665			(struct sockaddr_in *)mask);
666			case AF_INET6:
667		6	return netname6((struct sockaddr_in6 *)sa,
668			(struct sockaddr_in6 *)mask);
669			case AF_LINK:
670			return (link_print(sa));
671			case AF_MPLS:
672			return (label_print(sa));
673			default:
674			snprintf(line, sizeof(line), "af %d: %s",
675			sa->sa_family, any_ntoa(sa));
676			break;
677			}
678			return (line);
679			}
680
681			static const char hexlist[] = "0123456789abcdef";
682
683			char *
684			any_ntoa(const struct sockaddr *sa)
685			{
686			static char obuf[240];
687			const char *in = sa->sa_data;
688			char *out = obuf;
689			int len = sa->sa_len - offsetof(struct sockaddr, sa_data);
690
691			*out++ = 'Q';
692			do {
693			out++ = hexlist[(in >> 4) & 15];
694			out++ = hexlist[(in++) & 15];
695			*out++ = '.';
696			} while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]);
697			out[-1] = '\0';
698			return (obuf);
699			}
700
701			char *
702			link_print(struct sockaddr *sa)
703			{
704			struct sockaddr_dl sdl = (struct sockaddr_dl )sa;
705			u_char lla = (u_char )sdl->sdl_data + sdl->sdl_nlen;
706
707			if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
708			sdl->sdl_slen == 0) {
709			(void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index);
710			return (line);
711			}
712			switch (sdl->sdl_type) {
713			case IFT_ETHER:
714			case IFT_CARP:
715			return (ether_ntoa((struct ether_addr *)lla));
716			default:
717			return (link_ntoa(sdl));
718			}
719			}
720
721			char *
722			mpls_op(u_int32_t type)
723			{
724			switch (type & (MPLS_OP_PUSH \| MPLS_OP_POP \| MPLS_OP_SWAP)) {
725			case MPLS_OP_LOCAL:
726			return ("LOCAL");
727			case MPLS_OP_POP:
728			return ("POP");
729			case MPLS_OP_SWAP:
730			return ("SWAP");
731			case MPLS_OP_PUSH:
732			return ("PUSH");
733			default:
734			return ("?");
735			}
736			}
737
738			char *
739			label_print(struct sockaddr *sa)
740			{
741			struct sockaddr_mpls smpls = (struct sockaddr_mpls )sa;
742
743			if (smpls)
744			(void)snprintf(line, sizeof(line), "%u",
745			ntohl(smpls->smpls_label) >> MPLS_LABEL_OFFSET);
746			else
747			(void)snprintf(line, sizeof(line), "-");
748
749			return (line);
750			}