Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/route/show.c	Lines:	202	328	61.6 %
Date:	2017-11-07	Branches:	120	239	50.2 %


/*	$OpenBSD: show.c,v 1.108 2016/12/13 08:40:54 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_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_BLACKHOLE,'B' },
	{ RTF_PROTO3,	'3' },
	{ RTF_PROTO2,	'2' },
	{ RTF_PROTO1,	'1' },
	{ RTF_CLONED,	'c' },
	{ RTF_CACHED,	'h' },
	{ RTF_MPATH,	'P' },
	{ RTF_MPLS,	'T' },
	{ RTF_LOCAL,	'l' },
	{ RTF_BFD,	'F' },
	{ RTF_BROADCAST,'b' },
	{ RTF_CONNECTED,'n' },
	{ 0 }
};

int	 WID_DST(int);
void	 pr_rthdr(int);
void	 p_rtentry(struct rt_msghdr *);
void	 pr_family(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 flock 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;
	}
}

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", routename(rti_info[RTAX_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 + 2];
			struct sockaddr_rtlabel *sr;

			sr = (struct sockaddr_rtlabel *)sa;
			snprintf(name, sizeof(name), "\"%s\"", sr->sr_label);
			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 1.108 2016/12/13 08:40:54 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_DYNAMIC, 'D' },
78			{ RTF_MODIFIED, 'M' },
79			{ RTF_DONE, 'd' }, /* Completed -- for routing messages only */
80			{ RTF_CLONING, 'C' },
81			{ RTF_MULTICAST,'m' },
82			{ RTF_LLINFO, 'L' },
83			{ RTF_STATIC, 'S' },
84			{ RTF_BLACKHOLE,'B' },
85			{ RTF_PROTO3, '3' },
86			{ RTF_PROTO2, '2' },
87			{ RTF_PROTO1, '1' },
88			{ RTF_CLONED, 'c' },
89			{ RTF_CACHED, 'h' },
90			{ RTF_MPATH, 'P' },
91			{ RTF_MPLS, 'T' },
92			{ RTF_LOCAL, 'l' },
93			{ RTF_BFD, 'F' },
94			{ RTF_BROADCAST,'b' },
95			{ RTF_CONNECTED,'n' },
96			{ 0 }
97			};
98
99			int WID_DST(int);
100			void pr_rthdr(int);
101			void p_rtentry(struct rt_msghdr *);
102			void pr_family(int);
103			void p_sockaddr_mpls(struct sockaddr , struct sockaddr , int, int);
104			void p_flags(int, char *);
105			char *routename4(in_addr_t);
106			char routename6(struct sockaddr_in6 );
107			char netname4(in_addr_t, struct sockaddr_in );
108			char netname6(struct sockaddr_in6 , struct sockaddr_in6 *);
109
110			/*
111			* Print routing tables.
112			*/
113			void
114			p_rttables(int af, u_int tableid, int hastable, char prio)
115			{
116			struct rt_msghdr *rtm;
117			char buf = NULL, next, *lim = NULL;
118		450	size_t needed;
119		225	int mib[7], mcnt;
120			struct sockaddr *sa;
121
122		225	mib[0] = CTL_NET;
123		225	mib[1] = PF_ROUTE;
124		225	mib[2] = 0;
125		225	mib[3] = af;
126		225	mib[4] = NET_RT_DUMP;
127		225	mib[5] = prio;
128	✓✗	225	if (hastable) {
129		225	mib[6] = tableid;
130			mcnt = 7;
131		225	} else
132			mcnt = 6;
133
134			while (1) {
135	✗✓	225	if (sysctl(mib, mcnt, NULL, &needed, NULL, 0) == -1)
136			err(1, "route-sysctl-estimate");
137	✓✗	225	if (needed == 0)
138			break;
139	✗✓	225	if ((buf = realloc(buf, needed)) == NULL)
140			err(1, NULL);
141	✗✓	225	if (sysctl(mib, mcnt, buf, &needed, NULL, 0) == -1) {
142			if (errno == ENOMEM)
143			continue;
144			err(1, "sysctl of routing table");
145			}
146		225	lim = buf + needed;
147		225	break;
148			}
149
150	✗✓	225	if (pledge("stdio rpath dns flock cpath wpath", NULL) == -1)
151			err(1, "pledge");
152
153		225	printf("Routing tables\n");
154
155	✓✗	225	if (buf) {
156	✓✓	3744	for (next = buf; next < lim; next += rtm->rtm_msglen) {
157		1647	rtm = (struct rt_msghdr *)next;
158	✓✗	1647	if (rtm->rtm_version != RTM_VERSION)
159			continue;
160		1647	sa = (struct sockaddr *)(next + rtm->rtm_hdrlen);
161		1647	p_rtentry(rtm);
162		1647	}
163		225	free(buf);
164			buf = NULL;
165		225	}
166		225	}
167
168			/*
169			* column widths; each followed by one space
170			* width of destination/gateway column
171			* strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4
172			*/
173			#define WID_GW(af) ((af) == AF_INET6 ? (nflag ? 30 : 18) : 18)
174
175			int
176			WID_DST(int af)
177			{
178
179	✓✗	7488	if (nflag)
180	✗✓✓	3744	switch (af) {
181			case AF_MPLS:
182			return 9;
183			case AF_INET6:
184		504	return 34;
185			default:
186		3240	return 18;
187			}
188			else
189			switch (af) {
190			case AF_MPLS:
191			return 9;
192			default:
193			return 18;
194			}
195		3744	}
196
197			/*
198			* Print header for routing table columns.
199			*/
200			void
201			pr_rthdr(int af)
202			{
203	✗✗✓	450	switch (af) {
204			case PF_KEY:
205			printf("%-18s %-5s %-18s %-5s %-5s %-22s\n",
206			"Source", "Port", "Destination",
207			"Port", "Proto", "SA(Address/Proto/Type/Direction)");
208			break;
209			case PF_MPLS:
210			printf("%-9s %-9s %-6s %-18s %-6.6s %5.5s %8.8s %5.5s %4.4s %s\n",
211			"In label", "Out label", "Op", "Gateway",
212			"Flags", "Refs", "Use", "Mtu", "Prio", "Interface");
213			break;
214			default:
215		225	printf("%-.s %-.s %-6.6s %5.5s %8.8s %5.5s %4.4s %s",
216		225	WID_DST(af), WID_DST(af), "Destination",
217	✓✓✓✓	711	WID_GW(af), WID_GW(af), "Gateway",
218			"Flags", "Refs", "Use", "Mtu", "Prio", "Iface");
219	✗✓	225	if (verbose)
220			printf(" %s", "Label");
221	✓✗	450	putchar('\n');
222			break;
223			}
224		225	}
225
226			void
227			get_rtaddrs(int addrs, struct sockaddr sa, struct sockaddr *rti_info)
228			{
229			int i;
230
231	✓✓	54351	for (i = 0; i < RTAX_MAX; i++) {
232	✓✓	24705	if (addrs & (1 << i)) {
233		8235	rti_info[i] = sa;
234		16470	sa = (struct sockaddr )((char )(sa) +
235	✓✗	24705	ROUNDUP(sa->sa_len));
236		8235	} else
237		16470	rti_info[i] = NULL;
238			}
239		1647	}
240
241			/*
242			* Print a routing table entry.
243			*/
244			void
245			p_rtentry(struct rt_msghdr *rtm)
246			{
247			static int old_af = -1;
248		3294	struct sockaddr sa = (struct sockaddr )((char *)rtm + rtm->rtm_hdrlen);
249		1647	struct sockaddr mask, rti_info[RTAX_MAX];
250		1647	char ifbuf[IF_NAMESIZE];
251			char *label;
252
253	✗✓	1647	if (sa->sa_family == AF_KEY)
254			return;
255
256		1647	get_rtaddrs(rtm->rtm_addrs, sa, rti_info);
257
258	✓✓✗✓	1800	if (Fflag && rti_info[RTAX_GATEWAY]->sa_family != sa->sa_family) {
259			return;
260			}
261
262	✗✓	1647	if (strlen(so_label.rtlabel.sr_label)) {
263			if (!rti_info[RTAX_LABEL])
264			return;
265			label = ((struct sockaddr_rtlabel *)rti_info[RTAX_LABEL])->
266			sr_label;
267			if (strcmp(label, so_label.rtlabel.sr_label))
268			return;
269			}
270
271	✓✓	1647	if (old_af != sa->sa_family) {
272		225	old_af = sa->sa_family;
273		225	pr_family(sa->sa_family);
274		225	pr_rthdr(sa->sa_family);
275		225	}
276
277		1647	mask = rti_info[RTAX_NETMASK];
278	✗✓	1647	if ((sa = rti_info[RTAX_DST]) == NULL)
279			return;
280
281		1647	p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family));
282		3294	p_sockaddr_mpls(sa, rti_info[RTAX_SRC], rtm->rtm_mpls,
283		1647	WID_DST(sa->sa_family));
284
285		3294	p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST,
286	✓✓	3528	WID_GW(sa->sa_family));
287
288		1647	p_flags(rtm->rtm_flags, "%-6.6s ");
289		3294	printf("%5u %8llu ", rtm->rtm_rmx.rmx_refcnt,
290		1647	rtm->rtm_rmx.rmx_pksent);
291	✓✓	1647	if (rtm->rtm_rmx.rmx_mtu)
292		1539	printf("%5u ", rtm->rtm_rmx.rmx_mtu);
293			else
294		108	printf("%5s ", "-");
295	✓✗	3294	putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' ');
296		3294	printf(" %2d %-5.16s", rtm->rtm_priority,
297		1647	if_indextoname(rtm->rtm_index, ifbuf));
298	✗✓✗✗	1647	if (verbose && rti_info[RTAX_LABEL])
299			printf(" %s", routename(rti_info[RTAX_LABEL]));
300	✓✗	3294	putchar('\n');
301		3294	}
302
303			/*
304			* Print address family header before a section of the routing table.
305			*/
306			void
307			pr_family(int af)
308			{
309			char *afname;
310
311	✓✓✗✗ ✗	450	switch (af) {
312			case AF_INET:
313			afname = "Internet";
314		207	break;
315			case AF_INET6:
316			afname = "Internet6";
317		18	break;
318			case PF_KEY:
319			afname = "Encap";
320			break;
321			case AF_MPLS:
322			afname = "MPLS";
323			break;
324			default:
325			afname = NULL;
326			break;
327			}
328	✓✗	225	if (afname)
329		225	printf("\n%s:\n", afname);
330			else
331			printf("\nProtocol Family %d:\n", af);
332		225	}
333
334			void
335			p_sockaddr(struct sockaddr sa, struct sockaddr mask, int flags, int width)
336			{
337			char *cp;
338
339	✓✗✓	6588	switch (sa->sa_family) {
340			case AF_INET6:
341			{
342		468	struct sockaddr_in6 sa6 = (struct sockaddr_in6 )sa;
343		468	struct in6_addr *in6 = &sa6->sin6_addr;
344
345			/*
346			* XXX: This is a special workaround for KAME kernels.
347			* sin6_scope_id field of SA should be set in the future.
348			*/
349	✓✓✗✓ ✓✗	630	if (IN6_IS_ADDR_LINKLOCAL(in6) \|\|
350	✓✓✓✓	468	IN6_IS_ADDR_MC_LINKLOCAL(in6) \|\|
351	✓✓	360	IN6_IS_ADDR_MC_INTFACELOCAL(in6)) {
352			/* XXX: override is ok? */
353		216	sa6->sin6_scope_id = (u_int32_t)ntohs((u_short )
354			&in6->s6_addr[2]);
355		216	(u_short )&in6->s6_addr[2] = 0;
356		216	}
357	✓✓	468	if (flags & RTF_HOST)
358		360	cp = routename((struct sockaddr *)sa6);
359			else
360		108	cp = netname((struct sockaddr *)sa6, mask);
361			break;
362			}
363			case AF_MPLS:
364			return;
365			default:
366	✓✓	2826	if ((flags & RTF_HOST) \|\| mask == NULL)
367		2313	cp = routename(sa);
368			else
369		513	cp = netname(sa, mask);
370			break;
371			}
372	✗✓	3294	if (width < 0)
373			printf("%s", cp);
374			else {
375	✓✗	3294	if (nflag)
376		3294	printf("%-*s ", width, cp);
377			else
378			printf("%-.s ", width, width, cp);
379			}
380		6588	}
381
382			static char line[HOST_NAME_MAX+1];
383			static char domain[HOST_NAME_MAX+1];
384
385			void
386			p_sockaddr_mpls(struct sockaddr in, struct sockaddr out, int flags, int width)
387			{
388	✗✓	3294	if (in->sa_family != AF_MPLS)
389			return;
390
391			if (flags & MPLS_OP_POP \|\| flags == MPLS_OP_LOCAL) {
392			printf("%-*s ", width, label_print(in));
393			printf("%-*s ", width, label_print(NULL));
394			} else {
395			printf("%-*s ", width, label_print(in));
396			printf("%-*s ", width, label_print(out));
397			}
398
399			printf("%-6s ", mpls_op(flags));
400		1647	}
401
402			void
403			p_flags(int f, char *format)
404			{
405		3294	char name[33], *flags;
406			const struct bits *p = bits;
407
408	✓✓	79056	for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++)
409	✓✓	37881	if (p->b_mask & f)
410		5355	*flags++ = p->b_val;
411		1647	*flags = '\0';
412		1647	printf(format, name);
413		1647	}
414
415			char *
416			routename(struct sockaddr *sa)
417			{
418			char *cp = NULL;
419			static int first = 1;
420
421	✓✓	5436	if (first) {
422		234	first = 0;
423	✓✗✓✗	468	if (gethostname(domain, sizeof(domain)) == 0 &&
424		234	(cp = strchr(domain, '.')))
425		234	(void)strlcpy(domain, cp + 1, sizeof(domain));
426			else
427			domain[0] = '\0';
428			cp = NULL;
429		234	}
430
431	✗✓	2718	if (sa->sa_len == 0) {
432			(void)strlcpy(line, "default", sizeof(line));
433			return (line);
434			}
435
436	✓✓✓✗ ✗✗	2718	switch (sa->sa_family) {
437			case AF_INET:
438		2277	return
439		2277	(routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr));
440
441			case AF_INET6:
442			{
443		405	struct sockaddr_in6 sin6;
444
445		405	memset(&sin6, 0, sizeof(sin6));
446		405	memcpy(&sin6, sa, sa->sa_len);
447		405	sin6.sin6_len = sizeof(struct sockaddr_in6);
448		405	sin6.sin6_family = AF_INET6;
449	✓✗✗✓	513	if (sa->sa_len == sizeof(struct sockaddr_in6) &&
450	✓✓✗✓	513	(IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) \|\|
451	✓✓✓✗	306	IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) \|\|
452	✓✓✗✓	306	IN6_IS_ADDR_MC_INTFACELOCAL(&sin6.sin6_addr)) &&
453		108	sin6.sin6_scope_id == 0) {
454			sin6.sin6_scope_id =
455			ntohs((u_int16_t )&sin6.sin6_addr.s6_addr[2]);
456			sin6.sin6_addr.s6_addr[2] = 0;
457			sin6.sin6_addr.s6_addr[3] = 0;
458			}
459		405	return (routename6(&sin6));
460		405	}
461
462			case AF_LINK:
463		36	return (link_print(sa));
464			case AF_MPLS:
465			return (label_print(sa));
466			case AF_UNSPEC:
467			if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) {
468			static char name[RTLABEL_LEN + 2];
469			struct sockaddr_rtlabel *sr;
470
471			sr = (struct sockaddr_rtlabel *)sa;
472			snprintf(name, sizeof(name), "\"%s\"", sr->sr_label);
473			return (name);
474			}
475			/* FALLTHROUGH */
476			default:
477			(void)snprintf(line, sizeof(line), "(%d) %s",
478			sa->sa_family, any_ntoa(sa));
479			break;
480			}
481			return (line);
482		2718	}
483
484			char *
485			routename4(in_addr_t in)
486			{
487			char *cp = NULL;
488			struct in_addr ina;
489			struct hostent *hp;
490
491	✗✓	2277	if (in == INADDR_ANY)
492			cp = "default";
493	✗✓	2277	if (!cp && !nflag) {
494			if ((hp = gethostbyaddr((char *)&in,
495			sizeof(in), AF_INET)) != NULL) {
496			if ((cp = strchr(hp->h_name, '.')) &&
497			!strcmp(cp + 1, domain))
498			*cp = '\0';
499			cp = hp->h_name;
500			}
501			}
502		2277	ina.s_addr = in;
503	✗✓	6831	strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line));
504
505		2277	return (line);
506			}
507
508			char *
509			routename6(struct sockaddr_in6 *sin6)
510			{
511			int niflags = 0;
512
513	✓✗	810	if (nflag)
514		405	niflags \|= NI_NUMERICHOST;
515			else
516			niflags \|= NI_NOFQDN;
517
518	✗✓	810	if (getnameinfo((struct sockaddr *)sin6, sin6->sin6_len,
519		405	line, sizeof(line), NULL, 0, niflags) != 0)
520			strncpy(line, "invalid", sizeof(line));
521
522		405	return (line);
523			}
524
525			/*
526			* Return the name of the network whose address is given.
527			* The address is assumed to be that of a net or subnet, not a host.
528			*/
529			char *
530			netname4(in_addr_t in, struct sockaddr_in *maskp)
531			{
532			char *cp = NULL;
533			struct netent *np = NULL;
534			in_addr_t mask;
535			int mbits;
536
537		1026	in = ntohl(in);
538	✓✗✓✗	2052	mask = maskp && maskp->sin_len != 0 ? ntohl(maskp->sin_addr.s_addr) : 0;
539	✗✓	513	if (!nflag && in != INADDR_ANY) {
540			if ((np = getnetbyaddr(in, AF_INET)) != NULL)
541			cp = np->n_name;
542			}
543	✗✓	513	if (in == INADDR_ANY && mask == INADDR_ANY)
544			cp = "default";
545	✓✗	1539	mbits = mask ? 33 - ffs(mask) : 0;
546	✗✓	513	if (cp)
547			strlcpy(line, cp, sizeof(line));
548			#define C(x) ((x) & 0xff)
549	✓✓	513	else if (mbits < 9)
550		9	snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits);
551	✓✓	504	else if (mbits < 17)
552		72	snprintf(line, sizeof(line), "%u.%u/%d",
553		72	C(in >> 24) , C(in >> 16), mbits);
554	✓✓	432	else if (mbits < 25)
555		414	snprintf(line, sizeof(line), "%u.%u.%u/%d",
556			C(in >> 24), C(in >> 16), C(in >> 8), mbits);
557			else
558		18	snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24),
559		18	C(in >> 16), C(in >> 8), C(in), mbits);
560			#undef C
561		513	return (line);
562			}
563
564			char *
565			netname6(struct sockaddr_in6 sa6, struct sockaddr_in6 mask)
566			{
567		216	struct sockaddr_in6 sin6;
568			u_char *p;
569			int masklen, final = 0, illegal = 0;
570			int i, lim, flag, error;
571		108	char hbuf[NI_MAXHOST];
572
573		108	sin6 = *sa6;
574
575			flag = 0;
576			masklen = 0;
577	✓✗	108	if (mask) {
578		108	lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr);
579		108	lim = lim < (int)sizeof(struct in6_addr) ?
580			lim : (int)sizeof(struct in6_addr);
581	✓✓	3672	for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) {
582	✓✓✗✓	2916	if (final && *p) {
583			illegal++;
584			sin6.sin6_addr.s6_addr[i++] = 0x00;
585			continue;
586			}
587
588	✓✗✗✗ ✗✗✗✗ ✓✗	1728	switch (*p & 0xff) {
589			case 0xff:
590		432	masklen += 8;
591		432	break;
592			case 0xfe:
593			masklen += 7;
594			final++;
595			break;
596			case 0xfc:
597			masklen += 6;
598			final++;
599			break;
600			case 0xf8:
601			masklen += 5;
602			final++;
603			break;
604			case 0xf0:
605			masklen += 4;
606			final++;
607			break;
608			case 0xe0:
609			masklen += 3;
610			final++;
611			break;
612			case 0xc0:
613			masklen += 2;
614			final++;
615			break;
616			case 0x80:
617			masklen += 1;
618			final++;
619			break;
620			case 0x00:
621		1296	final++;
622		1296	break;
623			default:
624			final++;
625			illegal++;
626			break;
627			}
628
629	✓✗	1728	if (!illegal)
630		1728	sin6.sin6_addr.s6_addr[i++] &= *p;
631			else
632			sin6.sin6_addr.s6_addr[i++] = 0x00;
633			}
634	✗✓	108	while (i < (int)sizeof(struct in6_addr))
635			sin6.sin6_addr.s6_addr[i++] = 0x00;
636			} else
637			masklen = 128;
638
639	✗✓✗✗ ✗✗✗✗ ✗✗	108	if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr))
640			return ("default");
641
642	✗✓	108	if (illegal)
643			warnx("illegal prefixlen");
644
645	✓✗	108	if (nflag)
646		108	flag \|= NI_NUMERICHOST;
647		216	error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
648		108	hbuf, sizeof(hbuf), NULL, 0, flag);
649	✗✓	108	if (error)
650			snprintf(hbuf, sizeof(hbuf), "invalid");
651
652		108	snprintf(line, sizeof(line), "%s/%d", hbuf, masklen);
653		108	return (line);
654		108	}
655
656			/*
657			* Return the name of the network whose address is given.
658			* The address is assumed to be that of a net or subnet, not a host.
659			*/
660			char *
661			netname(struct sockaddr sa, struct sockaddr mask)
662			{
663	✓✓✗✗ ✗	1242	switch (sa->sa_family) {
664			case AF_INET:
665		1026	return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr,
666		513	(struct sockaddr_in *)mask);
667			case AF_INET6:
668		216	return netname6((struct sockaddr_in6 *)sa,
669		108	(struct sockaddr_in6 *)mask);
670			case AF_LINK:
671			return (link_print(sa));
672			case AF_MPLS:
673			return (label_print(sa));
674			default:
675			snprintf(line, sizeof(line), "af %d: %s",
676			sa->sa_family, any_ntoa(sa));
677			break;
678			}
679			return (line);
680		621	}
681
682			static const char hexlist[] = "0123456789abcdef";
683
684			char *
685			any_ntoa(const struct sockaddr *sa)
686			{
687			static char obuf[240];
688			const char *in = sa->sa_data;
689			char *out = obuf;
690			int len = sa->sa_len - offsetof(struct sockaddr, sa_data);
691
692			*out++ = 'Q';
693			do {
694			out++ = hexlist[(in >> 4) & 15];
695			out++ = hexlist[(in++) & 15];
696			*out++ = '.';
697			} while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]);
698			out[-1] = '\0';
699			return (obuf);
700			}
701
702			char *
703			link_print(struct sockaddr *sa)
704			{
705		72	struct sockaddr_dl sdl = (struct sockaddr_dl )sa;
706		36	u_char lla = (u_char )sdl->sdl_data + sdl->sdl_nlen;
707
708	✗✓✗✗ ✗✗	36	if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
709			sdl->sdl_slen == 0) {
710			(void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index);
711			return (line);
712			}
713	✗✓✗	36	switch (sdl->sdl_type) {
714			case IFT_ETHER:
715			case IFT_CARP:
716		36	return (ether_ntoa((struct ether_addr *)lla));
717			default:
718			return (link_ntoa(sdl));
719			}
720		36	}
721
722			char *
723			mpls_op(u_int32_t type)
724			{
725			switch (type & (MPLS_OP_PUSH \| MPLS_OP_POP \| MPLS_OP_SWAP)) {
726			case MPLS_OP_LOCAL:
727			return ("LOCAL");
728			case MPLS_OP_POP:
729			return ("POP");
730			case MPLS_OP_SWAP:
731			return ("SWAP");
732			case MPLS_OP_PUSH:
733			return ("PUSH");
734			default:
735			return ("?");
736			}
737			}
738
739			char *
740			label_print(struct sockaddr *sa)
741			{
742			struct sockaddr_mpls smpls = (struct sockaddr_mpls )sa;
743
744			if (smpls)
745			(void)snprintf(line, sizeof(line), "%u",
746			ntohl(smpls->smpls_label) >> MPLS_LABEL_OFFSET);
747			else
748			(void)snprintf(line, sizeof(line), "-");
749
750			return (line);
751			}