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 78078 2001-06-11 17:32:53Z ume $";
|
| 39 "$FreeBSD: head/usr.bin/netstat/route.c 78238 2001-06-15 00:25:44Z assar $"; |
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#define WID_IF(af) 6 /* width of netif column */
236#else
237#define WID_DST(af) \
|
238 ((af) == AF_INET6 ? (lflag ? 39 : (nflag ? 33: 18)) : 18)
|
| 238 ((af) == AF_INET6 ? (lflag ? 39 : (numeric_addr ? 33: 18)) : 18) |
239#define WID_GW(af) \
|
240 ((af) == AF_INET6 ? (lflag ? 31 : (nflag ? 29 : 18)) : 18)
|
| 240 ((af) == AF_INET6 ? (lflag ? 31 : (numeric_addr ? 29 : 18)) : 18) |
241#define WID_IF(af) ((af) == AF_INET6 ? 8 : 6)
242#endif /*INET6*/
243
244/*
245 * Print header for routing table columns.
246 */
247void
248pr_rthdr(af)
249 int af;
250{
251
252 if (Aflag)
253 printf("%-8.8s ","Address");
254 if (af == AF_INET || lflag)
255 if (lflag)
256 printf("%-*.*s %-*.*s %-6.6s %6.6s%8.8s %5.5s %*.*s %6s\n",
257 WID_DST(af), WID_DST(af), "Destination",
258 WID_GW(af), WID_GW(af), "Gateway",
259 "Flags", "Refs", "Use", "Mtu",
260 WID_IF(af), WID_IF(af), "Netif", "Expire");
261 else
262 printf("%-*.*s %-*.*s %-6.6s %6.6s%8.8s %8.8s %6s\n",
263 WID_DST(af), WID_DST(af), "Destination",
264 WID_GW(af), WID_GW(af), "Gateway",
265 "Flags", "Refs", "Use", "Netif", "Expire");
266 else
267 printf("%-*.*s %-*.*s %-6.6s %8.8s %6s\n",
268 WID_DST(af), WID_DST(af), "Destination",
269 WID_GW(af), WID_GW(af), "Gateway",
270 "Flags", "Netif", "Expire");
271}
272
273static struct sockaddr *
274kgetsa(dst)
275 register struct sockaddr *dst;
276{
277
278 kget(dst, pt_u.u_sa);
279 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa))
280 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len);
281 return (&pt_u.u_sa);
282}
283
284static void
285p_tree(rn)
286 struct radix_node *rn;
287{
288
289again:
290 kget(rn, rnode);
291 if (rnode.rn_bit < 0) {
292 if (Aflag)
293 printf("%-8.8lx ", (u_long)rn);
294 if (rnode.rn_flags & RNF_ROOT) {
295 if (Aflag)
296 printf("(root node)%s",
297 rnode.rn_dupedkey ? " =>\n" : "\n");
298 } else if (do_rtent) {
299 kget(rn, rtentry);
300 p_rtentry(&rtentry);
301 if (Aflag)
302 p_rtnode();
303 } else {
304 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key),
305 NULL, 0, 44);
306 putchar('\n');
307 }
308 if ((rn = rnode.rn_dupedkey))
309 goto again;
310 } else {
311 if (Aflag && do_rtent) {
312 printf("%-8.8lx ", (u_long)rn);
313 p_rtnode();
314 }
315 rn = rnode.rn_right;
316 p_tree(rnode.rn_left);
317 p_tree(rn);
318 }
319}
320
321char nbuf[20];
322
323static void
324p_rtnode()
325{
326 struct radix_mask *rm = rnode.rn_mklist;
327
328 if (rnode.rn_bit < 0) {
329 if (rnode.rn_mask) {
330 printf("\t mask ");
331 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask),
332 NULL, 0, -1);
333 } else if (rm == 0)
334 return;
335 } else {
336 sprintf(nbuf, "(%d)", rnode.rn_bit);
337 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right);
338 }
339 while (rm) {
340 kget(rm, rmask);
341 sprintf(nbuf, " %d refs, ", rmask.rm_refs);
342 printf(" mk = %8.8lx {(%d),%s",
343 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " ");
344 if (rmask.rm_flags & RNF_NORMAL) {
345 struct radix_node rnode_aux;
346 printf(" <normal>, ");
347 kget(rmask.rm_leaf, rnode_aux);
348 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask),
349 NULL, 0, -1);
350 } else
351 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask),
352 NULL, 0, -1);
353 putchar('}');
354 if ((rm = rmask.rm_mklist))
355 printf(" ->");
356 }
357 putchar('\n');
358}
359
360static void
361ntreestuff()
362{
363 size_t needed;
364 int mib[6];
365 char *buf, *next, *lim;
366 register struct rt_msghdr *rtm;
367
368 mib[0] = CTL_NET;
369 mib[1] = PF_ROUTE;
370 mib[2] = 0;
371 mib[3] = 0;
372 mib[4] = NET_RT_DUMP;
373 mib[5] = 0;
374 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) {
375 err(1, "sysctl: net.route.0.0.dump estimate");
376 }
377
378 if ((buf = malloc(needed)) == 0) {
379 err(2, "malloc(%lu)", (unsigned long)needed);
380 }
381 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
382 err(1, "sysctl: net.route.0.0.dump");
383 }
384 lim = buf + needed;
385 for (next = buf; next < lim; next += rtm->rtm_msglen) {
386 rtm = (struct rt_msghdr *)next;
387 np_rtentry(rtm);
388 }
389}
390
391static void
392np_rtentry(rtm)
393 register struct rt_msghdr *rtm;
394{
395 register struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
396#ifdef notdef
397 static int masks_done, banner_printed;
398#endif
399 static int old_af;
400 int af = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST;
401
402#ifdef notdef
403 /* for the moment, netmasks are skipped over */
404 if (!banner_printed) {
405 printf("Netmasks:\n");
406 banner_printed = 1;
407 }
408 if (masks_done == 0) {
409 if (rtm->rtm_addrs != RTA_DST ) {
410 masks_done = 1;
411 af = sa->sa_family;
412 }
413 } else
414#endif
415 af = sa->sa_family;
416 if (af != old_af) {
417 pr_family(af);
418 old_af = af;
419 }
420 if (rtm->rtm_addrs == RTA_DST)
421 p_sockaddr(sa, NULL, 0, 36);
422 else {
423 p_sockaddr(sa, NULL, rtm->rtm_flags, 16);
424 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa);
425 p_sockaddr(sa, NULL, 0, 18);
426 }
427 p_flags(rtm->rtm_flags & interesting, "%-6.6s ");
428 putchar('\n');
429}
430
431static void
432p_sockaddr(sa, mask, flags, width)
433 struct sockaddr *sa, *mask;
434 int flags, width;
435{
436 char workbuf[128], *cplim;
437 register char *cp = workbuf;
438
439 switch(sa->sa_family) {
440 case AF_INET:
441 {
442 register struct sockaddr_in *sin = (struct sockaddr_in *)sa;
443
444 if ((sin->sin_addr.s_addr == INADDR_ANY) &&
445 mask &&
446 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr)
447 ==0L)
448 cp = "default" ;
449 else if (flags & RTF_HOST)
450 cp = routename(sin->sin_addr.s_addr);
451 else if (mask)
452 cp = netname(sin->sin_addr.s_addr,
453 ntohl(((struct sockaddr_in *)mask)
454 ->sin_addr.s_addr));
455 else
456 cp = netname(sin->sin_addr.s_addr, 0L);
457 break;
458 }
459
460#ifdef INET6
461 case AF_INET6:
462 {
463 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
464 struct in6_addr *in6 = &sa6->sin6_addr;
465
466 /*
467 * XXX: This is a special workaround for KAME kernels.
468 * sin6_scope_id field of SA should be set in the future.
469 */
470 if (IN6_IS_ADDR_LINKLOCAL(in6) ||
471 IN6_IS_ADDR_MC_LINKLOCAL(in6)) {
472 /* XXX: override is ok? */
473 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]);
474 *(u_short *)&in6->s6_addr[2] = 0;
475 }
476
477 if (flags & RTF_HOST)
478 cp = routename6(sa6);
479 else if (mask)
480 cp = netname6(sa6,
481 &((struct sockaddr_in6 *)mask)->sin6_addr);
482 else {
483 cp = netname6(sa6, NULL);
484 }
485 break;
486 }
487#endif /*INET6*/
488
489 case AF_IPX:
490 {
491 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr;
492 if (ipx_nullnet(satoipx_addr(work)))
493 cp = "default";
494 else
495 cp = ipx_print(sa);
496 break;
497 }
498 case AF_APPLETALK:
499 {
500 if (!(flags & RTF_HOST) && mask)
501 cp = atalk_print2(sa,mask,9);
502 else
503 cp = atalk_print(sa,11);
504 break;
505 }
506 case AF_NETGRAPH:
507 {
508 printf("%s", ((struct sockaddr_ng *)sa)->sg_data);
509 break;
510 }
511#ifdef NS
512 case AF_NS:
513 cp = ns_print(sa);
514 break;
515#endif
516
517 case AF_LINK:
518 {
519 register struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
520
521 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
522 sdl->sdl_slen == 0)
523 (void) sprintf(workbuf, "link#%d", sdl->sdl_index);
524 else
525 switch (sdl->sdl_type) {
526
527 case IFT_ETHER:
528 {
529 register int i;
530 register u_char *lla = (u_char *)sdl->sdl_data +
531 sdl->sdl_nlen;
532
533 cplim = "";
534 for (i = 0; i < sdl->sdl_alen; i++, lla++) {
535 cp += sprintf(cp, "%s%x", cplim, *lla);
536 cplim = ":";
537 }
538 cp = workbuf;
539 break;
540 }
541
542 default:
543 cp = link_ntoa(sdl);
544 break;
545 }
546 break;
547 }
548
549 default:
550 {
551 register u_char *s = (u_char *)sa->sa_data, *slim;
552
553 slim = sa->sa_len + (u_char *) sa;
554 cplim = cp + sizeof(workbuf) - 6;
555 cp += sprintf(cp, "(%d)", sa->sa_family);
556 while (s < slim && cp < cplim) {
557 cp += sprintf(cp, " %02x", *s++);
558 if (s < slim)
559 cp += sprintf(cp, "%02x", *s++);
560 }
561 cp = workbuf;
562 }
563 }
564 if (width < 0 )
565 printf("%s ", cp);
566 else {
|
567 if (nflag)
|
| 567 if (numeric_addr) |
568 printf("%-*s ", width, cp);
569 else
570 printf("%-*.*s ", width, width, cp);
571 }
572}
573
574static void
575p_flags(f, format)
576 register int f;
577 char *format;
578{
579 char name[33], *flags;
580 register struct bits *p = bits;
581
582 for (flags = name; p->b_mask; p++)
583 if (p->b_mask & f)
584 *flags++ = p->b_val;
585 *flags = '\0';
586 printf(format, name);
587}
588
589static void
590p_rtentry(rt)
591 register struct rtentry *rt;
592{
593 static struct ifnet ifnet, *lastif;
594 struct rtentry parent;
595 static char name[16];
596 static char prettyname[9];
597 struct sockaddr *sa;
598 sa_u addr, mask;
599
600 /*
601 * Don't print protocol-cloned routes unless -a.
602 */
603 if (rt->rt_flags & RTF_WASCLONED && !aflag) {
604 kget(rt->rt_parent, parent);
605 if (parent.rt_flags & RTF_PRCLONING)
606 return;
607 }
608
609 bzero(&addr, sizeof(addr));
610 if ((sa = kgetsa(rt_key(rt))))
611 bcopy(sa, &addr, sa->sa_len);
612 bzero(&mask, sizeof(mask));
613 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt))))
614 bcopy(sa, &mask, sa->sa_len);
615 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags,
616 WID_DST(addr.u_sa.sa_family));
617 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST,
618 WID_GW(addr.u_sa.sa_family));
619 p_flags(rt->rt_flags, "%-6.6s ");
620 if (addr.u_sa.sa_family == AF_INET || lflag) {
621 printf("%6ld %8ld", rt->rt_refcnt, rt->rt_use);
622 if (lflag) {
623 if (rt->rt_rmx.rmx_mtu != 0)
624 printf("%6lu ", rt->rt_rmx.rmx_mtu);
625 else
626 printf("%6s ", "");
627 }
628 }
629 if (rt->rt_ifp) {
630 if (rt->rt_ifp != lastif) {
631 kget(rt->rt_ifp, ifnet);
632 kread((u_long)ifnet.if_name, name, 16);
633 lastif = rt->rt_ifp;
634 snprintf(prettyname, sizeof prettyname,
635 "%s%d", name, ifnet.if_unit);
636 }
637 printf("%8.8s", prettyname);
638 if (rt->rt_rmx.rmx_expire) {
639 time_t expire_time;
640
641 if ((expire_time =
642 rt->rt_rmx.rmx_expire - time((time_t *)0)) > 0)
643 printf(" %6d%s", (int)expire_time,
644 rt->rt_nodes[0].rn_dupedkey ? " =>" : "");
645 else
646 goto ifandkey;
647 } else if (rt->rt_nodes[0].rn_dupedkey) {
648ifandkey:;
649 printf(" =>");
650 }
651
652 }
653 putchar('\n');
654}
655
656char *
657routename(in)
658 u_long in;
659{
660 register char *cp;
661 static char line[MAXHOSTNAMELEN];
662 struct hostent *hp;
663
664 cp = 0;
|
665 if (!nflag) {
|
| 665 if (!numeric_addr) { |
666 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr),
667 AF_INET);
668 if (hp) {
669 cp = hp->h_name;
670 trimdomain(cp, strlen(cp));
671 }
672 }
673 if (cp) {
674 strncpy(line, cp, sizeof(line) - 1);
675 line[sizeof(line) - 1] = '\0';
676 } else {
677#define C(x) ((x) & 0xff)
678 in = ntohl(in);
679 sprintf(line, "%lu.%lu.%lu.%lu",
680 C(in >> 24), C(in >> 16), C(in >> 8), C(in));
681 }
682 return (line);
683}
684
685static u_long
686forgemask(a)
687 u_long a;
688{
689 u_long m;
690
691 if (IN_CLASSA(a))
692 m = IN_CLASSA_NET;
693 else if (IN_CLASSB(a))
694 m = IN_CLASSB_NET;
695 else
696 m = IN_CLASSC_NET;
697 return (m);
698}
699
700static void
701domask(dst, addr, mask)
702 char *dst;
703 u_long addr, mask;
704{
705 register int b, i;
706
707 if (!mask || (forgemask(addr) == mask)) {
708 *dst = '\0';
709 return;
710 }
711 i = 0;
712 for (b = 0; b < 32; b++)
713 if (mask & (1 << b)) {
714 register int bb;
715
716 i = b;
717 for (bb = b+1; bb < 32; bb++)
718 if (!(mask & (1 << bb))) {
719 i = -1; /* noncontig */
720 break;
721 }
722 break;
723 }
724 if (i == -1)
725 sprintf(dst, "&0x%lx", mask);
726 else
727 sprintf(dst, "/%d", 32-i);
728}
729
730/*
731 * Return the name of the network whose address is given.
732 * The address is assumed to be that of a net or subnet, not a host.
733 */
734char *
735netname(in, mask)
736 u_long in, mask;
737{
738 char *cp = 0;
739 static char line[MAXHOSTNAMELEN];
740 struct netent *np = 0;
741 u_long net, omask, dmask;
742 register u_long i;
743
744 i = ntohl(in);
745 dmask = forgemask(i);
746 omask = mask;
|
747 if (!nflag && i) {
|
| 747 if (!numeric_addr && i) { |
748 net = i & dmask;
749 if (!(np = getnetbyaddr(i, AF_INET)) && net != i)
750 np = getnetbyaddr(net, AF_INET);
751 if (np) {
752 cp = np->n_name;
753 trimdomain(cp, strlen(cp));
754 }
755 }
756 if (cp)
757 strncpy(line, cp, sizeof(line) - 1);
758 else {
759 switch (dmask) {
760 case IN_CLASSA_NET:
761 if ((i & IN_CLASSA_HOST) == 0) {
762 sprintf(line, "%lu", C(i >> 24));
763 break;
764 }
765 /* FALLTHROUGH */
766 case IN_CLASSB_NET:
767 if ((i & IN_CLASSB_HOST) == 0) {
768 sprintf(line, "%lu.%lu",
769 C(i >> 24), C(i >> 16));
770 break;
771 }
772 /* FALLTHROUGH */
773 case IN_CLASSC_NET:
774 if ((i & IN_CLASSC_HOST) == 0) {
775 sprintf(line, "%lu.%lu.%lu",
776 C(i >> 24), C(i >> 16), C(i >> 8));
777 break;
778 }
779 /* FALLTHROUGH */
780 default:
781 sprintf(line, "%lu.%lu.%lu.%lu",
782 C(i >> 24), C(i >> 16), C(i >> 8), C(i));
783 break;
784 }
785 }
786 domask(line+strlen(line), i, omask);
787 return (line);
788}
789
790#ifdef INET6
791char *
792netname6(sa6, mask)
793 struct sockaddr_in6 *sa6;
794 struct in6_addr *mask;
795{
796 static char line[MAXHOSTNAMELEN];
797 u_char *p = (u_char *)mask;
798 u_char *lim;
799 int masklen, illegal = 0, flag = NI_WITHSCOPEID;
800
801 if (mask) {
802 for (masklen = 0, lim = p + 16; p < lim; p++) {
803 switch (*p) {
804 case 0xff:
805 masklen += 8;
806 break;
807 case 0xfe:
808 masklen += 7;
809 break;
810 case 0xfc:
811 masklen += 6;
812 break;
813 case 0xf8:
814 masklen += 5;
815 break;
816 case 0xf0:
817 masklen += 4;
818 break;
819 case 0xe0:
820 masklen += 3;
821 break;
822 case 0xc0:
823 masklen += 2;
824 break;
825 case 0x80:
826 masklen += 1;
827 break;
828 case 0x00:
829 break;
830 default:
831 illegal ++;
832 break;
833 }
834 }
835 if (illegal)
836 fprintf(stderr, "illegal prefixlen\n");
837 }
838 else
839 masklen = 128;
840
841 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr))
842 return("default");
843
|
844 if (nflag)
|
| 844 if (numeric_addr) |
845 flag |= NI_NUMERICHOST;
846 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line),
847 NULL, 0, flag);
848
|
849 if (nflag)
|
| 849 if (numeric_addr) |
850 sprintf(&line[strlen(line)], "/%d", masklen);
851
852 return line;
853}
854
855char *
856routename6(sa6)
857 struct sockaddr_in6 *sa6;
858{
859 static char line[MAXHOSTNAMELEN];
860 int flag = NI_WITHSCOPEID;
861 /* use local variable for safety */
862 struct sockaddr_in6 sa6_local = {AF_INET6, sizeof(sa6_local),};
863
864 sa6_local.sin6_addr = sa6->sin6_addr;
865 sa6_local.sin6_scope_id = sa6->sin6_scope_id;
866
|
867 if (nflag)
|
| 867 if (numeric_addr) |
868 flag |= NI_NUMERICHOST;
869
870 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len,
871 line, sizeof(line), NULL, 0, flag);
872
873 return line;
874}
875#endif /*INET6*/
876
877/*
878 * Print routing statistics
879 */
880void
881rt_stats(off)
882 u_long off;
883{
884 struct rtstat rtstat;
885
886 if (off == 0) {
887 printf("rtstat: symbol not in namelist\n");
888 return;
889 }
890 kread(off, (char *)&rtstat, sizeof (rtstat));
891 printf("routing:\n");
892 printf("\t%u bad routing redirect%s\n",
893 rtstat.rts_badredirect, plural(rtstat.rts_badredirect));
894 printf("\t%u dynamically created route%s\n",
895 rtstat.rts_dynamic, plural(rtstat.rts_dynamic));
896 printf("\t%u new gateway%s due to redirects\n",
897 rtstat.rts_newgateway, plural(rtstat.rts_newgateway));
898 printf("\t%u destination%s found unreachable\n",
899 rtstat.rts_unreach, plural(rtstat.rts_unreach));
900 printf("\t%u use%s of a wildcard route\n",
901 rtstat.rts_wildcard, plural(rtstat.rts_wildcard));
902}
903
904char *
905ipx_print(sa)
906 register struct sockaddr *sa;
907{
908 u_short port;
909 struct servent *sp = 0;
910 char *net = "", *host = "";
911 register char *p;
912 register u_char *q;
913 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr;
914 static char mybuf[50];
915 char cport[10], chost[15], cnet[15];
916
917 port = ntohs(work.x_port);
918
919 if (ipx_nullnet(work) && ipx_nullhost(work)) {
920
921 if (port) {
922 if (sp)
923 sprintf(mybuf, "*.%s", sp->s_name);
924 else
925 sprintf(mybuf, "*.%x", port);
926 } else
927 sprintf(mybuf, "*.*");
928
929 return (mybuf);
930 }
931
932 if (ipx_wildnet(work))
933 net = "any";
934 else if (ipx_nullnet(work))
935 net = "*";
936 else {
937 q = work.x_net.c_net;
938 sprintf(cnet, "%02x%02x%02x%02x",
939 q[0], q[1], q[2], q[3]);
940 for (p = cnet; *p == '0' && p < cnet + 8; p++)
941 continue;
942 net = p;
943 }
944
945 if (ipx_wildhost(work))
946 host = "any";
947 else if (ipx_nullhost(work))
948 host = "*";
949 else {
950 q = work.x_host.c_host;
951 sprintf(chost, "%02x%02x%02x%02x%02x%02x",
952 q[0], q[1], q[2], q[3], q[4], q[5]);
953 for (p = chost; *p == '0' && p < chost + 12; p++)
954 continue;
955 host = p;
956 }
957
958 if (port) {
959 if (strcmp(host, "*") == 0)
960 host = "";
961 if (sp)
962 snprintf(cport, sizeof(cport),
963 "%s%s", *host ? "." : "", sp->s_name);
964 else
965 snprintf(cport, sizeof(cport),
966 "%s%x", *host ? "." : "", port);
967 } else
968 *cport = 0;
969
970 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport);
971 return(mybuf);
972}
973
974char *
975ipx_phost(sa)
976 struct sockaddr *sa;
977{
978 register struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa;
979 struct sockaddr_ipx work;
980 static union ipx_net ipx_zeronet;
981 char *p;
982 struct ipx_addr in;
983
984 work = *sipx;
985 in = work.sipx_addr;
986
987 work.sipx_addr.x_port = 0;
988 work.sipx_addr.x_net = ipx_zeronet;
989 p = ipx_print((struct sockaddr *)&work);
990 if (strncmp("*.", p, 2) == 0) p += 2;
991
992 return(p);
993}
994
995#ifdef NS
996short ns_nullh[] = {0,0,0};
997short ns_bh[] = {-1,-1,-1};
998
999char *
1000ns_print(sa)
1001 register struct sockaddr *sa;
1002{
1003 register struct sockaddr_ns *sns = (struct sockaddr_ns*)sa;
1004 struct ns_addr work;
1005 union { union ns_net net_e; u_long long_e; } net;
1006 u_short port;
1007 static char mybuf[50], cport[10], chost[25];
1008 char *host = "";
1009 register char *p; register u_char *q;
1010
1011 work = sns->sns_addr;
1012 port = ntohs(work.x_port);
1013 work.x_port = 0;
1014 net.net_e = work.x_net;
1015 if (ns_nullhost(work) && net.long_e == 0) {
1016 if (port ) {
1017 sprintf(mybuf, "*.%xH", port);
1018 upHex(mybuf);
1019 } else
1020 sprintf(mybuf, "*.*");
1021 return (mybuf);
1022 }
1023
1024 if (bcmp(ns_bh, work.x_host.c_host, 6) == 0) {
1025 host = "any";
1026 } else if (bcmp(ns_nullh, work.x_host.c_host, 6) == 0) {
1027 host = "*";
1028 } else {
1029 q = work.x_host.c_host;
1030 sprintf(chost, "%02x%02x%02x%02x%02x%02xH",
1031 q[0], q[1], q[2], q[3], q[4], q[5]);
1032 for (p = chost; *p == '0' && p < chost + 12; p++)
1033 continue;
1034 host = p;
1035 }
1036 if (port)
1037 sprintf(cport, ".%xH", htons(port));
1038 else
1039 *cport = 0;
1040
1041 sprintf(mybuf,"%xH.%s%s", ntohl(net.long_e), host, cport);
1042 upHex(mybuf);
1043 return(mybuf);
1044}
1045
1046char *
1047ns_phost(sa)
1048 struct sockaddr *sa;
1049{
1050 register struct sockaddr_ns *sns = (struct sockaddr_ns *)sa;
1051 struct sockaddr_ns work;
1052 static union ns_net ns_zeronet;
1053 char *p;
1054
1055 work = *sns;
1056 work.sns_addr.x_port = 0;
1057 work.sns_addr.x_net = ns_zeronet;
1058
1059 p = ns_print((struct sockaddr *)&work);
1060 if (strncmp("0H.", p, 3) == 0)
1061 p += 3;
1062 return(p);
1063}
1064#endif
1065
1066void
1067upHex(p0)
1068 char *p0;
1069{
1070 register char *p = p0;
1071
1072 for (; *p; p++)
1073 switch (*p) {
1074
1075 case 'a':
1076 case 'b':
1077 case 'c':
1078 case 'd':
1079 case 'e':
1080 case 'f':
1081 *p += ('A' - 'a');
1082 break;
1083 }
1084}
|