route.c revision 77911 
1/*
2 * Copyright (c) 1983, 1988, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35#if 0
36static char sccsid[] = "From: @(#)route.c	8.6 (Berkeley) 4/28/95";
37#endif
38static const char rcsid[] =
39  "$FreeBSD: head/usr.bin/netstat/route.c 77911 2001-06-08 15:44:17Z ru $";
40#endif /* not lint */
41
42#include <sys/param.h>
43#include <sys/protosw.h>
44#include <sys/socket.h>
45#include <sys/time.h>
46
47#include <net/if.h>
48#include <net/if_var.h>
49#include <net/if_dl.h>
50#include <net/if_types.h>
51#include <net/route.h>
52
53#include <netinet/in.h>
54#include <netipx/ipx.h>
55#include <netatalk/at.h>
56#include <netgraph/ng_socket.h>
57
58#ifdef NS
59#include <netns/ns.h>
60#endif
61
62#include <sys/sysctl.h>
63
64#include <arpa/inet.h>
65#include <libutil.h>
66#include <netdb.h>
67#include <stdio.h>
68#include <stdlib.h>
69#include <string.h>
70#include <unistd.h>
71#include <err.h>
72#include <time.h>
73#include "netstat.h"
74
75#define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d)))
76
77
78/* alignment constraint for routing socket */
79#define ROUNDUP(a) \
80       ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
81#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
82
83/*
84 * Definitions for showing gateway flags.
85 */
86struct bits {
87	u_long	b_mask;
88	char	b_val;
89} bits[] = {
90	{ RTF_UP,	'U' },
91	{ RTF_GATEWAY,	'G' },
92	{ RTF_HOST,	'H' },
93	{ RTF_REJECT,	'R' },
94	{ RTF_DYNAMIC,	'D' },
95	{ RTF_MODIFIED,	'M' },
96	{ RTF_DONE,	'd' }, /* Completed -- for routing messages only */
97	{ RTF_CLONING,	'C' },
98	{ RTF_XRESOLVE,	'X' },
99	{ RTF_LLINFO,	'L' },
100	{ RTF_STATIC,	'S' },
101	{ RTF_PROTO1,	'1' },
102	{ RTF_PROTO2,	'2' },
103	{ RTF_WASCLONED,'W' },
104	{ RTF_PRCLONING,'c' },
105	{ RTF_PROTO3,	'3' },
106	{ RTF_BLACKHOLE,'B' },
107	{ RTF_BROADCAST,'b' },
108	{ 0 }
109};
110
111typedef union {
112	long	dummy;		/* Helps align structure. */
113	struct	sockaddr u_sa;
114	u_short	u_data[128];
115} sa_u;
116
117static sa_u pt_u;
118
119int	do_rtent = 0;
120struct	rtentry rtentry;
121struct	radix_node rnode;
122struct	radix_mask rmask;
123struct	radix_node_head *rt_tables[AF_MAX+1];
124
125int	NewTree = 0;
126
127static struct sockaddr *kgetsa __P((struct sockaddr *));
128static void p_tree __P((struct radix_node *));
129static void p_rtnode __P((void));
130static void ntreestuff __P((void));
131static void np_rtentry __P((struct rt_msghdr *));
132static void p_sockaddr __P((struct sockaddr *, struct sockaddr *, int, int));
133static void p_flags __P((int, char *));
134static void p_rtentry __P((struct rtentry *));
135static u_long forgemask __P((u_long));
136static void domask __P((char *, u_long, u_long));
137
138#ifdef INET6
139char *routename6 __P((struct sockaddr_in6 *));
140char *netname6 __P((struct sockaddr_in6 *, struct in6_addr *));
141#endif /*INET6*/
142
143/*
144 * Print routing tables.
145 */
146void
147routepr(rtree)
148	u_long rtree;
149{
150	struct radix_node_head *rnh, head;
151	int i;
152
153	printf("Routing tables\n");
154
155	if (Aflag == 0 && NewTree)
156		ntreestuff();
157	else {
158		if (rtree == 0) {
159			printf("rt_tables: symbol not in namelist\n");
160			return;
161		}
162
163		kget(rtree, rt_tables);
164		for (i = 0; i <= AF_MAX; i++) {
165			if ((rnh = rt_tables[i]) == 0)
166				continue;
167			kget(rnh, head);
168			if (i == AF_UNSPEC) {
169				if (Aflag && af == 0) {
170					printf("Netmasks:\n");
171					p_tree(head.rnh_treetop);
172				}
173			} else if (af == AF_UNSPEC || af == i) {
174				pr_family(i);
175				do_rtent = 1;
176				pr_rthdr(i);
177				p_tree(head.rnh_treetop);
178			}
179		}
180	}
181}
182
183/*
184 * Print address family header before a section of the routing table.
185 */
186void
187pr_family(af)
188	int af;
189{
190	char *afname;
191
192	switch (af) {
193	case AF_INET:
194		afname = "Internet";
195		break;
196#ifdef INET6
197	case AF_INET6:
198		afname = "Internet6";
199		break;
200#endif /*INET6*/
201	case AF_IPX:
202		afname = "IPX";
203		break;
204#ifdef NS
205	case AF_NS:
206		afname = "XNS";
207		break;
208#endif
209	case AF_ISO:
210		afname = "ISO";
211		break;
212	case AF_APPLETALK:
213		afname = "AppleTalk";
214		break;
215	case AF_CCITT:
216		afname = "X.25";
217		break;
218	case AF_NETGRAPH:
219		afname = "Netgraph";
220		break;
221	default:
222		afname = NULL;
223		break;
224	}
225	if (afname)
226		printf("\n%s:\n", afname);
227	else
228		printf("\nProtocol Family %d:\n", af);
229}
230
231/* column widths; each followed by one space */
232#ifndef INET6
233#define	WID_DST(af) 	18	/* width of destination column */
234#define	WID_GW(af)	18	/* width of gateway column */
235#else
236#define	WID_DST(af) \
237	((af) == AF_INET6 ? (lflag ? 39 : (nflag ? 33: 18)) : 18)
238#define	WID_GW(af) \
239	((af) == AF_INET6 ? (lflag ? 31 : (nflag ? 29 : 18)) : 18)
240#endif /*INET6*/
241
242/*
243 * Print header for routing table columns.
244 */
245void
246pr_rthdr(af)
247	int af;
248{
249
250	if (Aflag)
251		printf("%-8.8s ","Address");
252	if (af == AF_INET || lflag)
253		printf("%-*.*s %-*.*s %-6.6s  %6.6s%8.8s  %8.8s %6s\n",
254			WID_DST(af), WID_DST(af), "Destination",
255			WID_GW(af), WID_GW(af), "Gateway",
256			"Flags", "Refs", "Use", "Netif", "Expire");
257	else
258		printf("%-*.*s %-*.*s %-6.6s  %8.8s %6s\n",
259			WID_DST(af), WID_DST(af), "Destination",
260			WID_GW(af), WID_GW(af), "Gateway",
261			"Flags", "Netif", "Expire");
262}
263
264static struct sockaddr *
265kgetsa(dst)
266	register struct sockaddr *dst;
267{
268
269	kget(dst, pt_u.u_sa);
270	if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa))
271		kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len);
272	return (&pt_u.u_sa);
273}
274
275static void
276p_tree(rn)
277	struct radix_node *rn;
278{
279
280again:
281	kget(rn, rnode);
282	if (rnode.rn_bit < 0) {
283		if (Aflag)
284			printf("%-8.8lx ", (u_long)rn);
285		if (rnode.rn_flags & RNF_ROOT) {
286			if (Aflag)
287				printf("(root node)%s",
288				    rnode.rn_dupedkey ? " =>\n" : "\n");
289		} else if (do_rtent) {
290			kget(rn, rtentry);
291			p_rtentry(&rtentry);
292			if (Aflag)
293				p_rtnode();
294		} else {
295			p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key),
296				   NULL, 0, 44);
297			putchar('\n');
298		}
299		if ((rn = rnode.rn_dupedkey))
300			goto again;
301	} else {
302		if (Aflag && do_rtent) {
303			printf("%-8.8lx ", (u_long)rn);
304			p_rtnode();
305		}
306		rn = rnode.rn_right;
307		p_tree(rnode.rn_left);
308		p_tree(rn);
309	}
310}
311
312char	nbuf[20];
313
314static void
315p_rtnode()
316{
317	struct radix_mask *rm = rnode.rn_mklist;
318
319	if (rnode.rn_bit < 0) {
320		if (rnode.rn_mask) {
321			printf("\t  mask ");
322			p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask),
323				   NULL, 0, -1);
324		} else if (rm == 0)
325			return;
326	} else {
327		sprintf(nbuf, "(%d)", rnode.rn_bit);
328		printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right);
329	}
330	while (rm) {
331		kget(rm, rmask);
332		sprintf(nbuf, " %d refs, ", rmask.rm_refs);
333		printf(" mk = %8.8lx {(%d),%s",
334			(u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " ");
335		if (rmask.rm_flags & RNF_NORMAL) {
336			struct radix_node rnode_aux;
337			printf(" <normal>, ");
338			kget(rmask.rm_leaf, rnode_aux);
339			p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask),
340				    NULL, 0, -1);
341		} else
342		    p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask),
343				NULL, 0, -1);
344		putchar('}');
345		if ((rm = rmask.rm_mklist))
346			printf(" ->");
347	}
348	putchar('\n');
349}
350
351static void
352ntreestuff()
353{
354	size_t needed;
355	int mib[6];
356	char *buf, *next, *lim;
357	register struct rt_msghdr *rtm;
358
359	mib[0] = CTL_NET;
360	mib[1] = PF_ROUTE;
361	mib[2] = 0;
362	mib[3] = 0;
363	mib[4] = NET_RT_DUMP;
364	mib[5] = 0;
365	if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) {
366		err(1, "sysctl: net.route.0.0.dump estimate");
367	}
368
369	if ((buf = malloc(needed)) == 0) {
370		err(2, "malloc(%lu)", (unsigned long)needed);
371	}
372	if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
373		err(1, "sysctl: net.route.0.0.dump");
374	}
375	lim  = buf + needed;
376	for (next = buf; next < lim; next += rtm->rtm_msglen) {
377		rtm = (struct rt_msghdr *)next;
378		np_rtentry(rtm);
379	}
380}
381
382static void
383np_rtentry(rtm)
384	register struct rt_msghdr *rtm;
385{
386	register struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
387#ifdef notdef
388	static int masks_done, banner_printed;
389#endif
390	static int old_af;
391	int af = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST;
392
393#ifdef notdef
394	/* for the moment, netmasks are skipped over */
395	if (!banner_printed) {
396		printf("Netmasks:\n");
397		banner_printed = 1;
398	}
399	if (masks_done == 0) {
400		if (rtm->rtm_addrs != RTA_DST ) {
401			masks_done = 1;
402			af = sa->sa_family;
403		}
404	} else
405#endif
406		af = sa->sa_family;
407	if (af != old_af) {
408		pr_family(af);
409		old_af = af;
410	}
411	if (rtm->rtm_addrs == RTA_DST)
412		p_sockaddr(sa, NULL, 0, 36);
413	else {
414		p_sockaddr(sa, NULL, rtm->rtm_flags, 16);
415		sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa);
416		p_sockaddr(sa, NULL, 0, 18);
417	}
418	p_flags(rtm->rtm_flags & interesting, "%-6.6s ");
419	putchar('\n');
420}
421
422static void
423p_sockaddr(sa, mask, flags, width)
424	struct sockaddr *sa, *mask;
425	int flags, width;
426{
427	char workbuf[128], *cplim;
428	register char *cp = workbuf;
429
430	switch(sa->sa_family) {
431	case AF_INET:
432	    {
433		register struct sockaddr_in *sin = (struct sockaddr_in *)sa;
434
435		if ((sin->sin_addr.s_addr == INADDR_ANY) &&
436			mask &&
437			ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr)
438				==0L)
439				cp = "default" ;
440		else if (flags & RTF_HOST)
441			cp = routename(sin->sin_addr.s_addr);
442		else if (mask)
443			cp = netname(sin->sin_addr.s_addr,
444				     ntohl(((struct sockaddr_in *)mask)
445					   ->sin_addr.s_addr));
446		else
447			cp = netname(sin->sin_addr.s_addr, 0L);
448		break;
449	    }
450
451#ifdef INET6
452	case AF_INET6:
453	    {
454		struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
455		struct in6_addr *in6 = &sa6->sin6_addr;
456
457		/*
458		 * XXX: This is a special workaround for KAME kernels.
459		 * sin6_scope_id field of SA should be set in the future.
460		 */
461		if (IN6_IS_ADDR_LINKLOCAL(in6) ||
462		    IN6_IS_ADDR_MC_LINKLOCAL(in6)) {
463		    /* XXX: override is ok? */
464		    sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]);
465		    *(u_short *)&in6->s6_addr[2] = 0;
466		}
467
468		if (flags & RTF_HOST)
469		    cp = routename6(sa6);
470		else if (mask)
471		    cp = netname6(sa6,
472				  &((struct sockaddr_in6 *)mask)->sin6_addr);
473		else {
474		    cp = netname6(sa6, NULL);
475		}
476		break;
477	    }
478#endif /*INET6*/
479
480	case AF_IPX:
481	    {
482		struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr;
483		if (ipx_nullnet(satoipx_addr(work)))
484			cp = "default";
485		else
486			cp = ipx_print(sa);
487		break;
488	    }
489	case AF_APPLETALK:
490	    {
491		if (!(flags & RTF_HOST) && mask)
492			cp = atalk_print2(sa,mask,9);
493		else
494			cp = atalk_print(sa,11);
495		break;
496	    }
497	case AF_NETGRAPH:
498	    {
499		printf("%s", ((struct sockaddr_ng *)sa)->sg_data);
500		break;
501	    }
502#ifdef NS
503	case AF_NS:
504		cp = ns_print(sa);
505		break;
506#endif
507
508	case AF_LINK:
509	    {
510		register struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
511
512		if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
513		    sdl->sdl_slen == 0)
514			(void) sprintf(workbuf, "link#%d", sdl->sdl_index);
515		else
516			switch (sdl->sdl_type) {
517
518			case IFT_ETHER:
519			    {
520				register int i;
521				register u_char *lla = (u_char *)sdl->sdl_data +
522				    sdl->sdl_nlen;
523
524				cplim = "";
525				for (i = 0; i < sdl->sdl_alen; i++, lla++) {
526					cp += sprintf(cp, "%s%x", cplim, *lla);
527					cplim = ":";
528				}
529				cp = workbuf;
530				break;
531			    }
532
533			default:
534				cp = link_ntoa(sdl);
535				break;
536			}
537		break;
538	    }
539
540	default:
541	    {
542		register u_char *s = (u_char *)sa->sa_data, *slim;
543
544		slim =  sa->sa_len + (u_char *) sa;
545		cplim = cp + sizeof(workbuf) - 6;
546		cp += sprintf(cp, "(%d)", sa->sa_family);
547		while (s < slim && cp < cplim) {
548			cp += sprintf(cp, " %02x", *s++);
549			if (s < slim)
550			    cp += sprintf(cp, "%02x", *s++);
551		}
552		cp = workbuf;
553	    }
554	}
555	if (width < 0 )
556		printf("%s ", cp);
557	else {
558		if (nflag)
559			printf("%-*s ", width, cp);
560		else
561			printf("%-*.*s ", width, width, cp);
562	}
563}
564
565static void
566p_flags(f, format)
567	register int f;
568	char *format;
569{
570	char name[33], *flags;
571	register struct bits *p = bits;
572
573	for (flags = name; p->b_mask; p++)
574		if (p->b_mask & f)
575			*flags++ = p->b_val;
576	*flags = '\0';
577	printf(format, name);
578}
579
580static void
581p_rtentry(rt)
582	register struct rtentry *rt;
583{
584	static struct ifnet ifnet, *lastif;
585	struct rtentry parent;
586	static char name[16];
587	static char prettyname[9];
588	struct sockaddr *sa;
589	sa_u addr, mask;
590
591	/*
592	 * Don't print protocol-cloned routes unless -a.
593	 */
594	if (rt->rt_flags & RTF_WASCLONED && !aflag) {
595		kget(rt->rt_parent, parent);
596		if (parent.rt_flags & RTF_PRCLONING)
597			return;
598	}
599
600	bzero(&addr, sizeof(addr));
601	if ((sa = kgetsa(rt_key(rt))))
602		bcopy(sa, &addr, sa->sa_len);
603	bzero(&mask, sizeof(mask));
604	if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt))))
605		bcopy(sa, &mask, sa->sa_len);
606	p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags,
607	    WID_DST(addr.u_sa.sa_family));
608	p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST,
609	    WID_GW(addr.u_sa.sa_family));
610	p_flags(rt->rt_flags, "%-6.6s ");
611	if (addr.u_sa.sa_family == AF_INET || lflag)
612		printf("%6ld %8ld ", rt->rt_refcnt, rt->rt_use);
613	if (rt->rt_ifp) {
614		if (rt->rt_ifp != lastif) {
615			kget(rt->rt_ifp, ifnet);
616			kread((u_long)ifnet.if_name, name, 16);
617			lastif = rt->rt_ifp;
618			snprintf(prettyname, sizeof prettyname,
619				 "%s%d", name, ifnet.if_unit);
620		}
621		printf("%8.8s", prettyname);
622		if (rt->rt_rmx.rmx_expire) {
623			time_t expire_time;
624
625			if ((expire_time =
626			    rt->rt_rmx.rmx_expire - time((time_t *)0)) > 0)
627				printf(" %6d%s", (int)expire_time,
628				    rt->rt_nodes[0].rn_dupedkey ? " =>" : "");
629			else
630			    goto ifandkey;
631		} else if (rt->rt_nodes[0].rn_dupedkey) {
632ifandkey:;
633			printf(" =>");
634		}
635
636	}
637	putchar('\n');
638}
639
640char *
641routename(in)
642	u_long in;
643{
644	register char *cp;
645	static char line[MAXHOSTNAMELEN];
646	struct hostent *hp;
647
648	cp = 0;
649	if (!nflag) {
650		hp = gethostbyaddr((char *)&in, sizeof (struct in_addr),
651			AF_INET);
652		if (hp) {
653			cp = hp->h_name;
654			trimdomain(cp, strlen(cp));
655		}
656	}
657	if (cp) {
658		strncpy(line, cp, sizeof(line) - 1);
659		line[sizeof(line) - 1] = '\0';
660	} else {
661#define C(x)	((x) & 0xff)
662		in = ntohl(in);
663		sprintf(line, "%lu.%lu.%lu.%lu",
664		    C(in >> 24), C(in >> 16), C(in >> 8), C(in));
665	}
666	return (line);
667}
668
669static u_long
670forgemask(a)
671	u_long a;
672{
673	u_long m;
674
675	if (IN_CLASSA(a))
676		m = IN_CLASSA_NET;
677	else if (IN_CLASSB(a))
678		m = IN_CLASSB_NET;
679	else
680		m = IN_CLASSC_NET;
681	return (m);
682}
683
684static void
685domask(dst, addr, mask)
686	char *dst;
687	u_long addr, mask;
688{
689	register int b, i;
690
691	if (!mask || (forgemask(addr) == mask)) {
692		*dst = '\0';
693		return;
694	}
695	i = 0;
696	for (b = 0; b < 32; b++)
697		if (mask & (1 << b)) {
698			register int bb;
699
700			i = b;
701			for (bb = b+1; bb < 32; bb++)
702				if (!(mask & (1 << bb))) {
703					i = -1;	/* noncontig */
704					break;
705				}
706			break;
707		}
708	if (i == -1)
709		sprintf(dst, "&0x%lx", mask);
710	else
711		sprintf(dst, "/%d", 32-i);
712}
713
714/*
715 * Return the name of the network whose address is given.
716 * The address is assumed to be that of a net or subnet, not a host.
717 */
718char *
719netname(in, mask)
720	u_long in, mask;
721{
722	char *cp = 0;
723	static char line[MAXHOSTNAMELEN];
724	struct netent *np = 0;
725	u_long net, omask, dmask;
726	register u_long i;
727
728	i = ntohl(in);
729	dmask = forgemask(i);
730	omask = mask;
731	if (!nflag && i) {
732		net = i & dmask;
733		if (!(np = getnetbyaddr(i, AF_INET)) && net != i)
734			np = getnetbyaddr(net, AF_INET);
735		if (np) {
736			cp = np->n_name;
737			trimdomain(cp, strlen(cp));
738		}
739	}
740	if (cp)
741		strncpy(line, cp, sizeof(line) - 1);
742	else {
743		switch (dmask) {
744		case IN_CLASSA_NET:
745			if ((i & IN_CLASSA_HOST) == 0) {
746				sprintf(line, "%lu", C(i >> 24));
747				break;
748			}
749			/* FALLTHROUGH */
750		case IN_CLASSB_NET:
751			if ((i & IN_CLASSB_HOST) == 0) {
752				sprintf(line, "%lu.%lu",
753					C(i >> 24), C(i >> 16));
754				break;
755			}
756			/* FALLTHROUGH */
757		case IN_CLASSC_NET:
758			if ((i & IN_CLASSC_HOST) == 0) {
759				sprintf(line, "%lu.%lu.%lu",
760					C(i >> 24), C(i >> 16), C(i >> 8));
761				break;
762			}
763			/* FALLTHROUGH */
764		default:
765			sprintf(line, "%lu.%lu.%lu.%lu",
766				C(i >> 24), C(i >> 16), C(i >> 8), C(i));
767			break;
768		}
769	}
770	domask(line+strlen(line), i, omask);
771	return (line);
772}
773
774#ifdef INET6
775char *
776netname6(sa6, mask)
777	struct sockaddr_in6 *sa6;
778	struct in6_addr *mask;
779{
780	static char line[MAXHOSTNAMELEN];
781	u_char *p = (u_char *)mask;
782	u_char *lim;
783	int masklen, illegal = 0, flag = NI_WITHSCOPEID;
784
785	if (mask) {
786		for (masklen = 0, lim = p + 16; p < lim; p++) {
787			switch (*p) {
788			 case 0xff:
789				 masklen += 8;
790				 break;
791			 case 0xfe:
792				 masklen += 7;
793				 break;
794			 case 0xfc:
795				 masklen += 6;
796				 break;
797			 case 0xf8:
798				 masklen += 5;
799				 break;
800			 case 0xf0:
801				 masklen += 4;
802				 break;
803			 case 0xe0:
804				 masklen += 3;
805				 break;
806			 case 0xc0:
807				 masklen += 2;
808				 break;
809			 case 0x80:
810				 masklen += 1;
811				 break;
812			 case 0x00:
813				 break;
814			 default:
815				 illegal ++;
816				 break;
817			}
818		}
819		if (illegal)
820			fprintf(stderr, "illegal prefixlen\n");
821	}
822	else
823		masklen = 128;
824
825	if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr))
826		return("default");
827
828	if (nflag)
829		flag |= NI_NUMERICHOST;
830	getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line),
831		    NULL, 0, flag);
832
833	if (nflag)
834		sprintf(&line[strlen(line)], "/%d", masklen);
835
836	return line;
837}
838
839char *
840routename6(sa6)
841	struct sockaddr_in6 *sa6;
842{
843	static char line[MAXHOSTNAMELEN];
844	int flag = NI_WITHSCOPEID;
845	/* use local variable for safety */
846	struct sockaddr_in6 sa6_local = {AF_INET6, sizeof(sa6_local),};
847
848	sa6_local.sin6_addr = sa6->sin6_addr;
849	sa6_local.sin6_scope_id = sa6->sin6_scope_id;
850
851	if (nflag)
852		flag |= NI_NUMERICHOST;
853
854	getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len,
855		    line, sizeof(line), NULL, 0, flag);
856
857	return line;
858}
859#endif /*INET6*/
860
861/*
862 * Print routing statistics
863 */
864void
865rt_stats(off)
866	u_long off;
867{
868	struct rtstat rtstat;
869
870	if (off == 0) {
871		printf("rtstat: symbol not in namelist\n");
872		return;
873	}
874	kread(off, (char *)&rtstat, sizeof (rtstat));
875	printf("routing:\n");
876	printf("\t%u bad routing redirect%s\n",
877		rtstat.rts_badredirect, plural(rtstat.rts_badredirect));
878	printf("\t%u dynamically created route%s\n",
879		rtstat.rts_dynamic, plural(rtstat.rts_dynamic));
880	printf("\t%u new gateway%s due to redirects\n",
881		rtstat.rts_newgateway, plural(rtstat.rts_newgateway));
882	printf("\t%u destination%s found unreachable\n",
883		rtstat.rts_unreach, plural(rtstat.rts_unreach));
884	printf("\t%u use%s of a wildcard route\n",
885		rtstat.rts_wildcard, plural(rtstat.rts_wildcard));
886}
887
888char *
889ipx_print(sa)
890	register struct sockaddr *sa;
891{
892	u_short port;
893	struct servent *sp = 0;
894	char *net = "", *host = "";
895	register char *p;
896	register u_char *q;
897	struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr;
898	static char mybuf[50];
899	char cport[10], chost[15], cnet[15];
900
901	port = ntohs(work.x_port);
902
903	if (ipx_nullnet(work) && ipx_nullhost(work)) {
904
905		if (port) {
906			if (sp)
907				sprintf(mybuf, "*.%s", sp->s_name);
908			else
909				sprintf(mybuf, "*.%x", port);
910		} else
911			sprintf(mybuf, "*.*");
912
913		return (mybuf);
914	}
915
916	if (ipx_wildnet(work))
917		net = "any";
918	else if (ipx_nullnet(work))
919		net = "*";
920	else {
921		q = work.x_net.c_net;
922		sprintf(cnet, "%02x%02x%02x%02x",
923			q[0], q[1], q[2], q[3]);
924		for (p = cnet; *p == '0' && p < cnet + 8; p++)
925			continue;
926		net = p;
927	}
928
929	if (ipx_wildhost(work))
930		host = "any";
931	else if (ipx_nullhost(work))
932		host = "*";
933	else {
934		q = work.x_host.c_host;
935		sprintf(chost, "%02x%02x%02x%02x%02x%02x",
936			q[0], q[1], q[2], q[3], q[4], q[5]);
937		for (p = chost; *p == '0' && p < chost + 12; p++)
938			continue;
939		host = p;
940	}
941
942	if (port) {
943		if (strcmp(host, "*") == 0)
944			host = "";
945		if (sp)
946			snprintf(cport, sizeof(cport),
947				"%s%s", *host ? "." : "", sp->s_name);
948		else
949			snprintf(cport, sizeof(cport),
950				"%s%x", *host ? "." : "", port);
951	} else
952		*cport = 0;
953
954	snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport);
955	return(mybuf);
956}
957
958char *
959ipx_phost(sa)
960	struct sockaddr *sa;
961{
962	register struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa;
963	struct sockaddr_ipx work;
964	static union ipx_net ipx_zeronet;
965	char *p;
966	struct ipx_addr in;
967
968	work = *sipx;
969	in = work.sipx_addr;
970
971	work.sipx_addr.x_port = 0;
972	work.sipx_addr.x_net = ipx_zeronet;
973	p = ipx_print((struct sockaddr *)&work);
974	if (strncmp("*.", p, 2) == 0) p += 2;
975
976	return(p);
977}
978
979#ifdef NS
980short ns_nullh[] = {0,0,0};
981short ns_bh[] = {-1,-1,-1};
982
983char *
984ns_print(sa)
985	register struct sockaddr *sa;
986{
987	register struct sockaddr_ns *sns = (struct sockaddr_ns*)sa;
988	struct ns_addr work;
989	union { union ns_net net_e; u_long long_e; } net;
990	u_short port;
991	static char mybuf[50], cport[10], chost[25];
992	char *host = "";
993	register char *p; register u_char *q;
994
995	work = sns->sns_addr;
996	port = ntohs(work.x_port);
997	work.x_port = 0;
998	net.net_e  = work.x_net;
999	if (ns_nullhost(work) && net.long_e == 0) {
1000		if (port ) {
1001			sprintf(mybuf, "*.%xH", port);
1002			upHex(mybuf);
1003		} else
1004			sprintf(mybuf, "*.*");
1005		return (mybuf);
1006	}
1007
1008	if (bcmp(ns_bh, work.x_host.c_host, 6) == 0) {
1009		host = "any";
1010	} else if (bcmp(ns_nullh, work.x_host.c_host, 6) == 0) {
1011		host = "*";
1012	} else {
1013		q = work.x_host.c_host;
1014		sprintf(chost, "%02x%02x%02x%02x%02x%02xH",
1015			q[0], q[1], q[2], q[3], q[4], q[5]);
1016		for (p = chost; *p == '0' && p < chost + 12; p++)
1017			continue;
1018		host = p;
1019	}
1020	if (port)
1021		sprintf(cport, ".%xH", htons(port));
1022	else
1023		*cport = 0;
1024
1025	sprintf(mybuf,"%xH.%s%s", ntohl(net.long_e), host, cport);
1026	upHex(mybuf);
1027	return(mybuf);
1028}
1029
1030char *
1031ns_phost(sa)
1032	struct sockaddr *sa;
1033{
1034	register struct sockaddr_ns *sns = (struct sockaddr_ns *)sa;
1035	struct sockaddr_ns work;
1036	static union ns_net ns_zeronet;
1037	char *p;
1038
1039	work = *sns;
1040	work.sns_addr.x_port = 0;
1041	work.sns_addr.x_net = ns_zeronet;
1042
1043	p = ns_print((struct sockaddr *)&work);
1044	if (strncmp("0H.", p, 3) == 0)
1045		p += 3;
1046	return(p);
1047}
1048#endif
1049
1050void
1051upHex(p0)
1052	char *p0;
1053{
1054	register char *p = p0;
1055
1056	for (; *p; p++)
1057		switch (*p) {
1058
1059		case 'a':
1060		case 'b':
1061		case 'c':
1062		case 'd':
1063		case 'e':
1064		case 'f':
1065			*p += ('A' - 'a');
1066			break;
1067		}
1068}
1069