Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/netstat/show.c	Lines:	203	320	63.4 %
Date:	2017-11-07	Branches:	114	225	50.7 %


/*	$OpenBSD: show.c,v 1.53 2017/01/21 11:32:04 guenther 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 "netstat.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	 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 *);

size_t
get_sysctl(const int *mib, u_int mcnt, char **buf)
{
	size_t needed;

	while (1) {
		if (sysctl(mib, mcnt, NULL, &needed, NULL, 0) == -1)
			err(1, "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");
		}
		break;
	}

	return needed;
}

/*
 * Print routing tables.
 */
void
p_rttables(int af, u_int tableid)
{
	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] = 0;
	mib[6] = tableid;
	mcnt = 7;

	needed = get_sysctl(mib, mcnt, &buf);
	lim = buf + needed;

	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);
}

/*
 * 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, int Aflag)
{
	if (Aflag)
		printf("%-*.*s ", PLEN, PLEN, "Address");
	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 (vflag && !Aflag)
			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];

	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 (old_af != sa->sa_family) {
		old_af = sa->sa_family;
		pr_family(sa->sa_family);
		pr_rthdr(sa->sa_family, 0);
	}

	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 (vflag && 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_addr(struct sockaddr *sa, struct sockaddr *mask, int flags)
{
	p_sockaddr(sa, mask, flags, WID_DST(sa->sa_family));
}

void
p_gwaddr(struct sockaddr *sa, int af)
{
	p_sockaddr(sa, 0, RTF_HOST, WID_GW(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_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, sizeof(*sin6),
	    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, in_addr_t mask)
{
	int mbits;

	in = ntohl(in);
	mask = ntohl(mask);
	mbits = mask ? 33 - ffs(mask) : 0;
	if (in == INADDR_ANY && mask == INADDR_ANY)
		strlcpy(line, "default", 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, sizeof(sin6),
	    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,
		    mask->sa_len == 0 ? 0 :
		    ((struct sockaddr_in *)mask)->sin_addr.s_addr);
	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 1.53 2017/01/21 11:32:04 guenther 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 "netstat.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 p_rtentry(struct rt_msghdr *);
101			void pr_family(int);
102			void p_sockaddr(struct sockaddr , struct sockaddr , int, 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
108			size_t
109			get_sysctl(const int mib, u_int mcnt, char *buf)
110			{
111		150	size_t needed;
112
113		75	while (1) {
114	✗✓	75	if (sysctl(mib, mcnt, NULL, &needed, NULL, 0) == -1)
115			err(1, "sysctl-estimate");
116	✓✗	75	if (needed == 0)
117			break;
118	✗✓	75	if ((buf = realloc(buf, needed)) == NULL)
119			err(1, NULL);
120	✗✓	75	if (sysctl(mib, mcnt, *buf, &needed, NULL, 0) == -1) {
121			if (errno == ENOMEM)
122			continue;
123			err(1, "sysctl");
124			}
125			break;
126			}
127
128		150	return needed;
129		75	}
130
131			/*
132			* Print routing tables.
133			*/
134			void
135			p_rttables(int af, u_int tableid)
136			{
137			struct rt_msghdr *rtm;
138		148	char buf = NULL, next, *lim = NULL;
139			size_t needed;
140		74	int mib[7], mcnt;
141			struct sockaddr *sa;
142
143		74	mib[0] = CTL_NET;
144		74	mib[1] = PF_ROUTE;
145		74	mib[2] = 0;
146		74	mib[3] = af;
147		74	mib[4] = NET_RT_DUMP;
148		74	mib[5] = 0;
149		74	mib[6] = tableid;
150			mcnt = 7;
151
152		74	needed = get_sysctl(mib, mcnt, &buf);
153		74	lim = buf + needed;
154
155		74	printf("Routing tables\n");
156
157	✓✗	74	if (buf) {
158	✓✓	3306	for (next = buf; next < lim; next += rtm->rtm_msglen) {
159		1579	rtm = (struct rt_msghdr *)next;
160	✓✗	1579	if (rtm->rtm_version != RTM_VERSION)
161			continue;
162		1579	sa = (struct sockaddr *)(next + rtm->rtm_hdrlen);
163		1579	p_rtentry(rtm);
164		1579	}
165			}
166		74	free(buf);
167		74	}
168
169			/*
170			* column widths; each followed by one space
171			* width of destination/gateway column
172			* strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4
173			*/
174			#define WID_GW(af) ((af) == AF_INET6 ? (nflag ? 30 : 18) : 18)
175
176			int
177			WID_DST(int af)
178			{
179
180	✓✗	6760	if (nflag)
181	✗✓✓	3380	switch (af) {
182			case AF_MPLS:
183			return 9;
184			case AF_INET6:
185		2452	return 34;
186			default:
187		928	return 18;
188			}
189			else
190			switch (af) {
191			case AF_MPLS:
192			return 9;
193			default:
194			return 18;
195			}
196		3380	}
197
198			/*
199			* Print header for routing table columns.
200			*/
201			void
202			pr_rthdr(int af, int Aflag)
203			{
204	✗✓	222	if (Aflag)
205			printf("%-.s ", PLEN, PLEN, "Address");
206	✗✗✓	111	switch (af) {
207			case PF_KEY:
208			printf("%-18s %-5s %-18s %-5s %-5s %-22s\n",
209			"Source", "Port", "Destination",
210			"Port", "Proto", "SA(Address/Proto/Type/Direction)");
211			break;
212			case PF_MPLS:
213			printf("%-9s %-9s %-6s %-18s %-6.6s %5.5s %8.8s %5.5s %4.4s %s\n",
214			"In label", "Out label", "Op", "Gateway",
215			"Flags", "Refs", "Use", "Mtu", "Prio", "Interface");
216			break;
217			default:
218		111	printf("%-.s %-.s %-6.6s %5.5s %8.8s %5.5s %4.4s %s",
219		111	WID_DST(af), WID_DST(af), "Destination",
220	✓✓✓✓	481	WID_GW(af), WID_GW(af), "Gateway",
221			"Flags", "Refs", "Use", "Mtu", "Prio", "Iface");
222	✗✓	111	if (vflag && !Aflag)
223			printf(" %s", "Label");
224	✓✗	222	putchar('\n');
225			break;
226			}
227		111	}
228
229			static void
230			get_rtaddrs(int addrs, struct sockaddr sa, struct sockaddr *rti_info)
231			{
232			int i;
233
234	✓✓	52107	for (i = 0; i < RTAX_MAX; i++) {
235	✓✓	23685	if (addrs & (1 << i)) {
236		7895	rti_info[i] = sa;
237		15790	sa = (struct sockaddr )((char )(sa) +
238	✓✗	23685	ROUNDUP(sa->sa_len));
239		7895	} else
240		15790	rti_info[i] = NULL;
241			}
242		1579	}
243
244			/*
245			* Print a routing table entry.
246			*/
247			void
248			p_rtentry(struct rt_msghdr *rtm)
249			{
250			static int old_af = -1;
251		3158	struct sockaddr sa = (struct sockaddr )((char *)rtm + rtm->rtm_hdrlen);
252		1579	struct sockaddr mask, rti_info[RTAX_MAX];
253		1579	char ifbuf[IF_NAMESIZE];
254
255	✗✓	1579	if (sa->sa_family == AF_KEY)
256			return;
257
258		1579	get_rtaddrs(rtm->rtm_addrs, sa, rti_info);
259
260	✗✓✗✗	1579	if (Fflag && rti_info[RTAX_GATEWAY]->sa_family != sa->sa_family) {
261			return;
262			}
263	✓✓	1579	if (old_af != sa->sa_family) {
264		111	old_af = sa->sa_family;
265		111	pr_family(sa->sa_family);
266		111	pr_rthdr(sa->sa_family, 0);
267		111	}
268
269		1579	mask = rti_info[RTAX_NETMASK];
270	✗✓	1579	if ((sa = rti_info[RTAX_DST]) == NULL)
271			return;
272
273		1579	p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family));
274		3158	p_sockaddr_mpls(sa, rti_info[RTAX_SRC], rtm->rtm_mpls,
275		1579	WID_DST(sa->sa_family));
276
277		3158	p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST,
278	✓✓	4310	WID_GW(sa->sa_family));
279
280		1579	p_flags(rtm->rtm_flags, "%-6.6s ");
281		3158	printf("%5u %8llu ", rtm->rtm_rmx.rmx_refcnt,
282		1579	rtm->rtm_rmx.rmx_pksent);
283	✓✓	1579	if (rtm->rtm_rmx.rmx_mtu)
284		1092	printf("%5u ", rtm->rtm_rmx.rmx_mtu);
285			else
286		487	printf("%5s ", "-");
287	✓✗	3158	putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' ');
288		3158	printf(" %2d %-5.16s", rtm->rtm_priority,
289		1579	if_indextoname(rtm->rtm_index, ifbuf));
290	✗✓✗✗	1579	if (vflag && rti_info[RTAX_LABEL])
291			printf(" %s", ((struct sockaddr_rtlabel *)
292			rti_info[RTAX_LABEL])->sr_label);
293	✓✗	3158	putchar('\n');
294		3158	}
295
296			/*
297			* Print address family header before a section of the routing table.
298			*/
299			void
300			pr_family(int af)
301			{
302			char *afname;
303
304	✓✓✗✗ ✗	222	switch (af) {
305			case AF_INET:
306			afname = "Internet";
307		37	break;
308			case AF_INET6:
309			afname = "Internet6";
310		74	break;
311			case PF_KEY:
312			afname = "Encap";
313			break;
314			case AF_MPLS:
315			afname = "MPLS";
316			break;
317			default:
318			afname = NULL;
319			break;
320			}
321	✓✗	111	if (afname)
322		111	printf("\n%s:\n", afname);
323			else
324			printf("\nProtocol Family %d:\n", af);
325		111	}
326
327			void
328			p_addr(struct sockaddr sa, struct sockaddr mask, int flags)
329			{
330			p_sockaddr(sa, mask, flags, WID_DST(sa->sa_family));
331			}
332
333			void
334			p_gwaddr(struct sockaddr *sa, int af)
335			{
336			p_sockaddr(sa, 0, RTF_HOST, WID_GW(af));
337			}
338
339			void
340			p_sockaddr(struct sockaddr sa, struct sockaddr mask, int flags, int width)
341			{
342			char *cp;
343
344	✓✗✓	6316	switch (sa->sa_family) {
345			case AF_INET6:
346			{
347		2268	struct sockaddr_in6 sa6 = (struct sockaddr_in6 )sa;
348		2268	struct in6_addr *in6 = &sa6->sin6_addr;
349
350			/*
351			* XXX: This is a special workaround for KAME kernels.
352			* sin6_scope_id field of SA should be set in the future.
353			*/
354	✓✓✓✓ ✓✗	2820	if (IN6_IS_ADDR_LINKLOCAL(in6) \|\|
355	✓✓✓✓	2216	IN6_IS_ADDR_MC_LINKLOCAL(in6) \|\|
356	✓✓	1920	IN6_IS_ADDR_MC_INTFACELOCAL(in6)) {
357			/* XXX: override is ok? */
358		644	sa6->sin6_scope_id = (u_int32_t)ntohs((u_short )
359			&in6->s6_addr[2]);
360		644	(u_short )&in6->s6_addr[2] = 0;
361		644	}
362	✓✓	2268	if (flags & RTF_HOST)
363		1264	cp = routename((struct sockaddr *)sa6);
364			else
365		1004	cp = netname((struct sockaddr *)sa6, mask);
366			break;
367			}
368			case AF_MPLS:
369			return;
370			default:
371	✓✓	890	if ((flags & RTF_HOST) \|\| mask == NULL)
372		723	cp = routename(sa);
373			else
374		167	cp = netname(sa, mask);
375			break;
376			}
377	✗✓	3158	if (width < 0)
378			printf("%s", cp);
379			else {
380	✓✗	3158	if (nflag)
381		3158	printf("%-*s ", width, cp);
382			else
383			printf("%-.s ", width, width, cp);
384			}
385		6316	}
386
387			static char line[HOST_NAME_MAX+1];
388			static char domain[HOST_NAME_MAX+1];
389
390			void
391			p_sockaddr_mpls(struct sockaddr in, struct sockaddr out, int flags, int width)
392			{
393	✗✓	3158	if (in->sa_family != AF_MPLS)
394			return;
395
396			if (flags & MPLS_OP_POP \|\| flags == MPLS_OP_LOCAL) {
397			printf("%-*s ", width, label_print(in));
398			printf("%-*s ", width, label_print(NULL));
399			} else {
400			printf("%-*s ", width, label_print(in));
401			printf("%-*s ", width, label_print(out));
402			}
403
404			printf("%-6s ", mpls_op(flags));
405		1579	}
406
407			void
408			p_flags(int f, char *format)
409			{
410		3158	char name[33], *flags;
411			const struct bits *p = bits;
412
413	✓✓	75792	for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++)
414	✓✓	36317	if (p->b_mask & f)
415		5669	*flags++ = p->b_val;
416		1579	*flags = '\0';
417		1579	printf(format, name);
418		1579	}
419
420			char *
421			routename(struct sockaddr *sa)
422			{
423			char *cp = NULL;
424			static int first = 1;
425
426	✓✓	3974	if (first) {
427		74	first = 0;
428	✓✗✓✗	148	if (gethostname(domain, sizeof(domain)) == 0 &&
429		74	(cp = strchr(domain, '.')))
430		74	(void)strlcpy(domain, cp + 1, sizeof(domain));
431			else
432			domain[0] = '\0';
433			cp = NULL;
434		74	}
435
436	✗✓	1987	if (sa->sa_len == 0) {
437			(void)strlcpy(line, "default", sizeof(line));
438			return (line);
439			}
440
441	✓✓✓✗ ✗✗	1987	switch (sa->sa_family) {
442			case AF_INET:
443		529	return
444		529	(routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr));
445
446			case AF_INET6:
447			{
448		1264	struct sockaddr_in6 sin6;
449
450		1264	memset(&sin6, 0, sizeof(sin6));
451		1264	memcpy(&sin6, sa, sa->sa_len);
452		1264	sin6.sin6_family = AF_INET6;
453	✓✗✗✓	1520	if (sa->sa_len == sizeof(struct sockaddr_in6) &&
454	✓✓✗✓	1520	(IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) \|\|
455	✗✓✗✗	1008	IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) \|\|
456	✗✓✗✗	1008	IN6_IS_ADDR_MC_INTFACELOCAL(&sin6.sin6_addr)) &&
457		256	sin6.sin6_scope_id == 0) {
458			sin6.sin6_scope_id =
459			ntohs((u_int16_t )&sin6.sin6_addr.s6_addr[2]);
460			sin6.sin6_addr.s6_addr[2] = 0;
461			sin6.sin6_addr.s6_addr[3] = 0;
462			}
463		1264	return (routename6(&sin6));
464		1264	}
465
466			case AF_LINK:
467		194	return (link_print(sa));
468			case AF_MPLS:
469			return (label_print(sa));
470			case AF_UNSPEC:
471			if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) {
472			static char name[RTLABEL_LEN];
473			struct sockaddr_rtlabel *sr;
474
475			sr = (struct sockaddr_rtlabel *)sa;
476			(void)strlcpy(name, sr->sr_label, sizeof(name));
477			return (name);
478			}
479			/* FALLTHROUGH */
480			default:
481			(void)snprintf(line, sizeof(line), "(%d) %s",
482			sa->sa_family, any_ntoa(sa));
483			break;
484			}
485			return (line);
486		1987	}
487
488			char *
489			routename4(in_addr_t in)
490			{
491			char *cp = NULL;
492			struct in_addr ina;
493			struct hostent *hp;
494
495	✗✓	532	if (in == INADDR_ANY)
496			cp = "default";
497	✗✓	532	if (!cp && !nflag) {
498			if ((hp = gethostbyaddr((char *)&in,
499			sizeof(in), AF_INET)) != NULL) {
500			if ((cp = strchr(hp->h_name, '.')) &&
501			!strcmp(cp + 1, domain))
502			*cp = '\0';
503			cp = hp->h_name;
504			}
505			}
506		532	ina.s_addr = in;
507	✗✓	1596	strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line));
508
509		532	return (line);
510			}
511
512			char *
513			routename6(struct sockaddr_in6 *sin6)
514			{
515			int niflags = 0;
516
517	✓✗	2532	if (nflag)
518		1266	niflags \|= NI_NUMERICHOST;
519			else
520			niflags \|= NI_NOFQDN;
521
522	✗✓	2532	if (getnameinfo((struct sockaddr )sin6, sizeof(sin6),
523		1266	line, sizeof(line), NULL, 0, niflags) != 0)
524			strncpy(line, "invalid", sizeof(line));
525
526		1266	return (line);
527			}
528
529			/*
530			* Return the name of the network whose address is given.
531			* The address is assumed to be that of a net or subnet, not a host.
532			*/
533			char *
534			netname4(in_addr_t in, in_addr_t mask)
535			{
536			int mbits;
537
538		340	in = ntohl(in);
539		170	mask = ntohl(mask);
540	✓✓	473	mbits = mask ? 33 - ffs(mask) : 0;
541	✓✓	170	if (in == INADDR_ANY && mask == INADDR_ANY)
542		37	strlcpy(line, "default", sizeof(line));
543			#define C(x) ((x) & 0xff)
544	✓✓	133	else if (mbits < 9)
545		57	snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits);
546	✗✓	76	else if (mbits < 17)
547			snprintf(line, sizeof(line), "%u.%u/%d",
548			C(in >> 24) , C(in >> 16), mbits);
549	✓✗	76	else if (mbits < 25)
550		76	snprintf(line, sizeof(line), "%u.%u.%u/%d",
551			C(in >> 24), C(in >> 16), C(in >> 8), mbits);
552			else
553			snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24),
554			C(in >> 16), C(in >> 8), C(in), mbits);
555			#undef C
556		170	return (line);
557			}
558
559			char *
560			netname6(struct sockaddr_in6 sa6, struct sockaddr_in6 mask)
561			{
562		2012	struct sockaddr_in6 sin6;
563			u_char *p;
564			int masklen, final = 0, illegal = 0;
565			int i, lim, flag, error;
566		1006	char hbuf[NI_MAXHOST];
567
568		1006	sin6 = *sa6;
569
570			flag = 0;
571			masklen = 0;
572	✓✗	1006	if (mask) {
573		1006	lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr);
574		1006	lim = lim < (int)sizeof(struct in6_addr) ?
575			lim : (int)sizeof(struct in6_addr);
576	✓✓	34204	for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) {
577	✓✓✗✓	24987	if (final && *p) {
578			illegal++;
579			sin6.sin6_addr.s6_addr[i++] = 0x00;
580			continue;
581			}
582
583	✓✗✗✗ ✓✗✓✗ ✓✗	16096	switch (*p & 0xff) {
584			case 0xff:
585		6200	masklen += 8;
586		6200	break;
587			case 0xfe:
588			masklen += 7;
589			final++;
590			break;
591			case 0xfc:
592			masklen += 6;
593			final++;
594			break;
595			case 0xf8:
596			masklen += 5;
597			final++;
598			break;
599			case 0xf0:
600		112	masklen += 4;
601		112	final++;
602		112	break;
603			case 0xe0:
604			masklen += 3;
605			final++;
606			break;
607			case 0xc0:
608		112	masklen += 2;
609		112	final++;
610		112	break;
611			case 0x80:
612			masklen += 1;
613			final++;
614			break;
615			case 0x00:
616		9672	final++;
617		9672	break;
618			default:
619			final++;
620			illegal++;
621			break;
622			}
623
624	✓✗	16096	if (!illegal)
625		16096	sin6.sin6_addr.s6_addr[i++] &= *p;
626			else
627			sin6.sin6_addr.s6_addr[i++] = 0x00;
628			}
629	✗✓	1006	while (i < (int)sizeof(struct in6_addr))
630			sin6.sin6_addr.s6_addr[i++] = 0x00;
631			} else
632			masklen = 128;
633
634	✗✓✗✗ ✗✗✗✗ ✗✗	1006	if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr))
635			return ("default");
636
637	✗✓	1006	if (illegal)
638			warnx("illegal prefixlen");
639
640	✓✗	1006	if (nflag)
641		1006	flag \|= NI_NUMERICHOST;
642		2012	error = getnameinfo((struct sockaddr *)&sin6, sizeof(sin6),
643		1006	hbuf, sizeof(hbuf), NULL, 0, flag);
644	✗✓	1006	if (error)
645			snprintf(hbuf, sizeof(hbuf), "invalid");
646
647		1006	snprintf(line, sizeof(line), "%s/%d", hbuf, masklen);
648		1006	return (line);
649		1006	}
650
651			/*
652			* Return the name of the network whose address is given.
653			* The address is assumed to be that of a net or subnet, not a host.
654			*/
655			char *
656			netname(struct sockaddr sa, struct sockaddr mask)
657			{
658	✓✓✗✗ ✗	2342	switch (sa->sa_family) {
659			case AF_INET:
660		334	return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr,
661	✓✗	501	mask->sa_len == 0 ? 0 :
662		167	((struct sockaddr_in *)mask)->sin_addr.s_addr);
663			case AF_INET6:
664		2008	return netname6((struct sockaddr_in6 *)sa,
665		1004	(struct sockaddr_in6 *)mask);
666			case AF_LINK:
667			return (link_print(sa));
668			case AF_MPLS:
669			return (label_print(sa));
670			default:
671			snprintf(line, sizeof(line), "af %d: %s",
672			sa->sa_family, any_ntoa(sa));
673			break;
674			}
675			return (line);
676		1171	}
677
678			static const char hexlist[] = "0123456789abcdef";
679
680			char *
681			any_ntoa(const struct sockaddr *sa)
682			{
683			static char obuf[240];
684			const char *in = sa->sa_data;
685			char *out = obuf;
686			int len = sa->sa_len - offsetof(struct sockaddr, sa_data);
687
688			*out++ = 'Q';
689			do {
690			out++ = hexlist[(in >> 4) & 15];
691			out++ = hexlist[(in++) & 15];
692			*out++ = '.';
693			} while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]);
694			out[-1] = '\0';
695			return (obuf);
696			}
697
698			char *
699			link_print(struct sockaddr *sa)
700			{
701		388	struct sockaddr_dl sdl = (struct sockaddr_dl )sa;
702		194	u_char lla = (u_char )sdl->sdl_data + sdl->sdl_nlen;
703
704	✓✓✗✓ ✗✗	278	if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
705			sdl->sdl_slen == 0) {
706			(void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index);
707			return (line);
708			}
709	✗✓✗	194	switch (sdl->sdl_type) {
710			case IFT_ETHER:
711			case IFT_CARP:
712		194	return (ether_ntoa((struct ether_addr *)lla));
713			default:
714			return (link_ntoa(sdl));
715			}
716		194	}
717
718			char *
719			mpls_op(u_int32_t type)
720			{
721			switch (type & (MPLS_OP_PUSH \| MPLS_OP_POP \| MPLS_OP_SWAP)) {
722			case MPLS_OP_LOCAL:
723			return ("LOCAL");
724			case MPLS_OP_POP:
725			return ("POP");
726			case MPLS_OP_SWAP:
727			return ("SWAP");
728			case MPLS_OP_PUSH:
729			return ("PUSH");
730			default:
731			return ("?");
732			}
733			}
734
735			char *
736			label_print(struct sockaddr *sa)
737			{
738			struct sockaddr_mpls smpls = (struct sockaddr_mpls )sa;
739
740			if (smpls)
741			(void)snprintf(line, sizeof(line), "%u",
742			ntohl(smpls->smpls_label) >> MPLS_LABEL_OFFSET);
743			else
744			(void)snprintf(line, sizeof(line), "-");
745
746			return (line);
747			}