?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
usr.sbin/makefs: Sync with sys/vfs/hammer2
[dragonfly.git] / usr.bin / netstat / route.c
blob55fc9f2c9f7e2cf3c8fcb3ffb96fd491657c51dd
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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)route.c 8.6 (Berkeley) 4/28/95
30 * $FreeBSD: src/usr.bin/netstat/route.c,v 1.41.2.14 2002/07/17 02:22:22 kbyanc Exp $
31 */
32
33 #define _KERNEL_STRUCTURES
34 #include <sys/kinfo.h>
35 #include <sys/param.h>
36 #include <sys/socket.h>
37 #include <sys/time.h>
38
39 #include <net/ethernet.h>
40 #include <net/if.h>
41 #include <net/if_var.h> /* for struct ifnet */
42 #include <net/if_dl.h>
43 #include <net/if_types.h>
44 #include <net/route.h>
45
46 #include <netinet/in.h>
47 #include <netgraph/socket/ng_socket.h>
48
49 #include <netproto/mpls/mpls.h>
50
51 #include <sys/sysctl.h>
52
53 #include <arpa/inet.h>
54 #include <libutil.h>
55 #include <netdb.h>
56 #include <stdio.h>
57 #include <stdlib.h>
58 #include <string.h>
59 #include <unistd.h>
60 #include <err.h>
61 #include <time.h>
62 #include <kinfo.h>
63 #include "netstat.h"
64
65 #define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d)))
66 #define constSA(x) ((const struct sockaddr *)(x))
67
68 /*
69 * Definitions for showing gateway flags.
70 */
71 struct bits {
72 u_long b_mask;
73 char b_val;
74 } bits[] = {
75 { RTF_UP, 'U' },
76 { RTF_GATEWAY, 'G' },
77 { RTF_HOST, 'H' },
78 { RTF_REJECT, 'R' },
79 { RTF_DYNAMIC, 'D' },
80 { RTF_MODIFIED, 'M' },
81 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */
82 { RTF_CLONING, 'C' },
83 { RTF_XRESOLVE, 'X' },
84 { RTF_LLINFO, 'L' },
85 { RTF_STATIC, 'S' },
86 { RTF_PROTO1, '1' },
87 { RTF_PROTO2, '2' },
88 { RTF_WASCLONED,'W' },
89 { RTF_PRCLONING,'c' },
90 { RTF_PROTO3, '3' },
91 { RTF_BLACKHOLE,'B' },
92 { RTF_BROADCAST,'b' },
93 { RTF_MPLSOPS, 'm' },
94 { 0, 0 }
95 };
96
97 typedef union {
98 long dummy; /* Helps align structure. */
99 struct sockaddr u_sa;
100 u_short u_data[128];
101 } sa_u;
102
103 static sa_u pt_u;
104
105 int do_rtent = 0;
106 struct rtentry rtentry;
107 struct radix_node rnode;
108 struct radix_mask rmask;
109 struct radix_node_head *rt_tables[AF_MAX+1];
110
111 int NewTree = 0;
112
113 static struct sockaddr *kgetsa (const struct sockaddr *);
114 static void size_cols (int ef, struct radix_node *rn);
115 static void size_cols_tree (struct radix_node *rn);
116 static void size_cols_rtentry (struct rtentry *rt);
117 static void p_tree (struct radix_node *);
118 static void p_rtnode (void);
119 static void ntreestuff (void);
120 static void np_rtentry (struct rt_msghdr *);
121 static void p_sockaddr (struct sockaddr *, struct sockaddr *, int, int);
122 static const char *fmt_sockaddr (struct sockaddr *sa, struct sockaddr *mask,
123 int flags);
124 static void p_flags (int, const char *);
125 static const char *fmt_flags(int f);
126 static void p_rtentry (struct rtentry *);
127 static u_long forgemask (u_long);
128 static void domask (char *, u_long, u_long);
129 static const char *labelops(struct rtentry *);
130
131 /*
132 * Print routing tables.
133 */
134 void
135 routepr(u_long rtree)
136 {
137 struct radix_node_head *rnh, head;
138 int i;
139
140 printf("Routing tables\n");
141
142 if (Aflag == 0 && NewTree) {
143 ntreestuff();
144 } else {
145 if (rtree == 0) {
146 printf("rt_tables: symbol not in namelist\n");
147 return;
148 }
149 if (cpuflag >= 0) {
150 /*
151 * Severe hack.
152 */
153 rtree += cpuflag * (AF_MAX + 1) * sizeof(void *);
154 }
155 if (kget(rtree, rt_tables) != 0)
156 return;
157 for (i = 0; i <= AF_MAX; i++) {
158 if ((rnh = rt_tables[i]) == NULL)
159 continue;
160 if (kget(rnh, head) != 0)
161 continue;
162 if (i == AF_UNSPEC) {
163 if (Aflag && af == 0) {
164 printf("Netmasks:\n");
165 p_tree(head.rnh_treetop);
166 }
167 } else if (af == AF_UNSPEC || af == i) {
168 size_cols(i, head.rnh_treetop);
169 pr_family(i);
170 do_rtent = 1;
171 pr_rthdr(i);
172 p_tree(head.rnh_treetop);
173 }
174 }
175 }
176 }
177
178 /*
179 * Print address family header before a section of the routing table.
180 */
181 void
182 pr_family(int af1)
183 {
184 const char *afname;
185
186 switch (af1) {
187 case AF_INET:
188 afname = "Internet";
189 break;
190 #ifdef INET6
191 case AF_INET6:
192 afname = "Internet6";
193 break;
194 #endif /*INET6*/
195 case AF_CCITT:
196 afname = "X.25";
197 break;
198 case AF_NETGRAPH:
199 afname = "Netgraph";
200 break;
201 case AF_MPLS:
202 afname = "MPLS";
203 break;
204 default:
205 afname = NULL;
206 break;
207 }
208 if (afname)
209 printf("\n%s:\n", afname);
210 else
211 printf("\nProtocol Family %d:\n", af1);
212 }
213
214 /* column widths; each followed by one space */
215 #ifndef INET6
216 #define WID_DST_DEFAULT(af) 18 /* width of destination column */
217 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */
218 #define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */
219 #else
220 #define WID_DST_DEFAULT(af) \
221 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18)
222 #define WID_GW_DEFAULT(af) \
223 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18)
224 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 :6))
225 #endif /*INET6*/
226
227 static int wid_dst;
228 static int wid_gw;
229 static int wid_flags;
230 static int wid_refs;
231 static int wid_use;
232 static int wid_mtu;
233 static int wid_if;
234 static int wid_expire;
235 static int wid_mplslops;
236 static int wid_msl;
237 static int wid_iwmax;
238 static int wid_iw;
239
240 static void
241 size_cols(int ef, struct radix_node *rn)
242 {
243 wid_dst = WID_DST_DEFAULT(ef);
244 wid_gw = WID_GW_DEFAULT(ef);
245 wid_flags = 6;
246 wid_refs = 6;
247 wid_use = 8;
248 wid_mtu = 6;
249 wid_if = WID_IF_DEFAULT(ef);
250 wid_expire = 6;
251 wid_mplslops = 7;
252 wid_msl = 7;
253 wid_iwmax = 5;
254 wid_iw = 2;
255
256 if (Wflag)
257 size_cols_tree(rn);
258 }
259
260 static void
261 size_cols_tree(struct radix_node *rn)
262 {
263 again:
264 if (kget(rn, rnode) != 0)
265 return;
266 if (!(rnode.rn_flags & RNF_ACTIVE))
267 return;
268 if (rnode.rn_bit < 0) {
269 if ((rnode.rn_flags & RNF_ROOT) == 0) {
270 if (kget(rn, rtentry) != 0)
271 return;
272 size_cols_rtentry(&rtentry);
273 }
274 if ((rn = rnode.rn_dupedkey))
275 goto again;
276 } else {
277 rn = rnode.rn_right;
278 size_cols_tree(rnode.rn_left);
279 size_cols_tree(rn);
280 }
281 }
282
283 static void
284 size_cols_rtentry(struct rtentry *rt)
285 {
286 static struct ifnet ifnet, *lastif;
287 struct rtentry parent;
288 static char buffer[100];
289 const char *bp;
290 struct sockaddr *sa;
291 sa_u addr, mask;
292 int len;
293
294 /*
295 * Don't print protocol-cloned routes unless -a.
296 */
297 if (rt->rt_flags & RTF_WASCLONED && !aflag) {
298 if (kget(rt->rt_parent, parent) != 0)
299 return;
300 if (parent.rt_flags & RTF_PRCLONING)
301 return;
302 }
303
304 bzero(&addr, sizeof(addr));
305 if ((sa = kgetsa(rt_key(rt))))
306 bcopy(sa, &addr, sa->sa_len);
307 bzero(&mask, sizeof(mask));
308 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt))))
309 bcopy(sa, &mask, sa->sa_len);
310 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags);
311 len = strlen(bp);
312 wid_dst = MAX(len, wid_dst);
313
314 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST);
315 len = strlen(bp);
316 wid_gw = MAX(len, wid_gw);
317
318 bp = fmt_flags(rt->rt_flags);
319 len = strlen(bp);
320 wid_flags = MAX(len, wid_flags);
321
322 if (addr.u_sa.sa_family == AF_INET || Wflag) {
323 len = snprintf(buffer, sizeof(buffer), "%ld", rt->rt_refcnt);
324 wid_refs = MAX(len, wid_refs);
325 len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use);
326 wid_use = MAX(len, wid_use);
327 if (Wflag && rt->rt_rmx.rmx_mtu != 0) {
328 len = snprintf(buffer, sizeof(buffer),
329 "%lu", rt->rt_rmx.rmx_mtu);
330 wid_mtu = MAX(len, wid_mtu);
331 }
332 }
333 if (rt->rt_ifp) {
334 if (rt->rt_ifp != lastif) {
335 if (kget(rt->rt_ifp, ifnet) == 0)
336 len = strlen(ifnet.if_xname);
337 else
338 len = strlen("---");
339 lastif = rt->rt_ifp;
340 wid_if = MAX(len, wid_if);
341 }
342 if (rt->rt_rmx.rmx_expire) {
343 struct timespec sp;
344 int expire_time;
345
346 clock_gettime(CLOCK_MONOTONIC, &sp);
347
348 expire_time = (int)(rt->rt_rmx.rmx_expire - sp.tv_sec);
349
350 if (expire_time > 0) {
351 snprintf(buffer, sizeof(buffer), "%d",
352 (int)expire_time);
353 wid_expire = MAX(len, wid_expire);
354 }
355 }
356 }
357 if (Wflag) {
358 if (rt->rt_shim[0] != NULL) {
359 len = strlen(labelops(rt));
360 wid_mplslops = MAX(len, wid_mplslops);
361 }
362
363 if (rt->rt_rmx.rmx_msl) {
364 len = snprintf(buffer, sizeof(buffer),
365 "%lu", rt->rt_rmx.rmx_msl);
366 wid_msl = MAX(len, wid_msl);
367 }
368 if (rt->rt_rmx.rmx_iwmaxsegs) {
369 len = snprintf(buffer, sizeof(buffer),
370 "%lu", rt->rt_rmx.rmx_iwmaxsegs);
371 wid_iwmax = MAX(len, wid_iwmax);
372 }
373 if (rt->rt_rmx.rmx_iwcapsegs) {
374 len = snprintf(buffer, sizeof(buffer),
375 "%lu", rt->rt_rmx.rmx_iwcapsegs);
376 wid_iw = MAX(len, wid_iw);
377 }
378 }
379 }
380
381
382 /*
383 * Print header for routing table columns.
384 */
385 void
386 pr_rthdr(int af1)
387 {
388
389 if (Aflag)
390 printf("%-8.8s ","Address");
391 if (af1 == AF_INET || Wflag) {
392 if (Wflag) {
393 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*.*s "
394 "%*s %-*s%*s %*s %*s\n",
395 wid_dst, wid_dst, "Destination",
396 wid_gw, wid_gw, "Gateway",
397 wid_flags, wid_flags, "Flags",
398 wid_refs, wid_refs, "Refs",
399 wid_use, wid_use, "Use",
400 wid_mtu, wid_mtu, "Mtu",
401 wid_if, wid_if, "Netif",
402 wid_expire, "Expire",
403 wid_mplslops, "Labelops",
404 wid_msl, "Msl",
405 wid_iwmax, "IWmax",
406 wid_iw, "IW");
407 } else {
408 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n",
409 wid_dst, wid_dst, "Destination",
410 wid_gw, wid_gw, "Gateway",
411 wid_flags, wid_flags, "Flags",
412 wid_refs, wid_refs, "Refs",
413 wid_use, wid_use, "Use",
414 wid_if, wid_if, "Netif",
415 wid_expire, "Expire");
416 }
417 } else {
418 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n",
419 wid_dst, wid_dst, "Destination",
420 wid_gw, wid_gw, "Gateway",
421 wid_flags, wid_flags, "Flags",
422 wid_if, wid_if, "Netif",
423 wid_expire, "Expire");
424 }
425 }
426
427 static struct sockaddr *
428 kgetsa(const struct sockaddr *dst)
429 {
430
431 if (kget(dst, pt_u.u_sa) != 0)
432 return (NULL);
433 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa))
434 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len);
435 return (&pt_u.u_sa);
436 }
437
438 static void
439 p_tree(struct radix_node *rn)
440 {
441
442 again:
443 if (kget(rn, rnode) != 0)
444 return;
445 if (!(rnode.rn_flags & RNF_ACTIVE))
446 return;
447 if (rnode.rn_bit < 0) {
448 if (Aflag)
449 printf("%-8.8lx ", (u_long)rn);
450 if (rnode.rn_flags & RNF_ROOT) {
451 if (Aflag)
452 printf("(root node)%s",
453 rnode.rn_dupedkey ? " =>\n" : "\n");
454 } else if (do_rtent) {
455 if (kget(rn, rtentry) == 0) {
456 p_rtentry(&rtentry);
457 if (Aflag)
458 p_rtnode();
459 }
460 } else {
461 p_sockaddr(kgetsa(constSA(rnode.rn_key)), NULL, 0, 44);
462 putchar('\n');
463 }
464 if ((rn = rnode.rn_dupedkey))
465 goto again;
466 } else {
467 if (Aflag && do_rtent) {
468 printf("%-8.8lx ", (u_long)rn);
469 p_rtnode();
470 }
471 rn = rnode.rn_right;
472 p_tree(rnode.rn_left);
473 p_tree(rn);
474 }
475 }
476
477 char nbuf[20];
478
479 static void
480 p_rtnode(void)
481 {
482 struct radix_mask *rm = rnode.rn_mklist;
483
484 if (rnode.rn_bit < 0) {
485 if (rnode.rn_mask) {
486 printf("\t mask ");
487 p_sockaddr(kgetsa(constSA(rnode.rn_mask)),
488 NULL, 0, -1);
489 } else if (rm == NULL)
490 return;
491 } else {
492 sprintf(nbuf, "(%d)", rnode.rn_bit);
493 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right);
494 }
495 while (rm) {
496 if (kget(rm, rmask) != 0)
497 break;
498 sprintf(nbuf, " %d refs, ", rmask.rm_refs);
499 printf(" mk = %8.8lx {(%d),%s",
500 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " ");
501 if (rmask.rm_flags & RNF_NORMAL) {
502 struct radix_node rnode_aux;
503 printf(" <normal>, ");
504 if (kget(rmask.rm_leaf, rnode_aux) == 0)
505 p_sockaddr(kgetsa(constSA(rnode_aux.rn_mask)),
506 NULL, 0, -1);
507 else
508 p_sockaddr(NULL, NULL, 0, -1);
509 } else {
510 p_sockaddr(kgetsa(constSA(rmask.rm_mask)),
511 NULL, 0, -1);
512 }
513 putchar('}');
514 if ((rm = rmask.rm_next))
515 printf(" ->");
516 }
517 putchar('\n');
518 }
519
520 static void
521 ntreestuff(void)
522 {
523 size_t needed;
524 int mib[7];
525 int miblen;
526 char *buf, *next, *lim;
527 struct rt_msghdr *rtm;
528
529 mib[0] = CTL_NET;
530 mib[1] = PF_ROUTE;
531 mib[2] = 0;
532 mib[3] = 0;
533 mib[4] = NET_RT_DUMP;
534 mib[5] = 0;
535 if (cpuflag >= 0) {
536 mib[6] = cpuflag;
537 miblen = 7;
538 } else {
539 miblen = 6;
540 }
541 if (sysctl(mib, miblen, NULL, &needed, NULL, 0) < 0) {
542 err(1, "sysctl: net.route.0.0.dump estimate");
543 }
544
545 if ((buf = malloc(needed)) == NULL) {
546 err(2, "malloc(%lu)", (unsigned long)needed);
547 }
548 if (sysctl(mib, miblen, buf, &needed, NULL, 0) < 0) {
549 err(1, "sysctl: net.route.0.0.dump");
550 }
551 lim = buf + needed;
552 for (next = buf; next < lim; next += rtm->rtm_msglen) {
553 rtm = (struct rt_msghdr *)next;
554 np_rtentry(rtm);
555 }
556 }
557
558 static void
559 np_rtentry(struct rt_msghdr *rtm)
560 {
561 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
562 #ifdef notdef
563 static int masks_done, banner_printed;
564 #endif
565 static int old_af;
566 int af1 = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST;
567
568 #ifdef notdef
569 /* for the moment, netmasks are skipped over */
570 if (!banner_printed) {
571 printf("Netmasks:\n");
572 banner_printed = 1;
573 }
574 if (masks_done == 0) {
575 if (rtm->rtm_addrs != RTA_DST ) {
576 masks_done = 1;
577 af1 = sa->sa_family;
578 }
579 } else
580 #endif
581 af1 = sa->sa_family;
582 if (af1 != old_af) {
583 pr_family(af1);
584 old_af = af1;
585 }
586 if (rtm->rtm_addrs == RTA_DST)
587 p_sockaddr(sa, NULL, 0, 36);
588 else {
589 p_sockaddr(sa, NULL, rtm->rtm_flags, 16);
590 sa = (struct sockaddr *)(RT_ROUNDUP(sa->sa_len) + (char *)sa);
591 p_sockaddr(sa, NULL, 0, 18);
592 }
593 p_flags(rtm->rtm_flags & interesting, "%-6.6s ");
594 putchar('\n');
595 }
596
597 static void
598 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width)
599 {
600 const char *cp;
601
602 cp = fmt_sockaddr(sa, mask, flags);
603
604 if (width < 0 )
605 printf("%s ", cp);
606 else {
607 if (numeric_addr)
608 printf("%-*s ", width, cp);
609 else
610 printf("%-*.*s ", width, width, cp);
611 }
612 }
613
614 static const char *
615 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags)
616 {
617 static char workbuf[128];
618 const char *cp = workbuf;
619
620 if (sa == NULL)
621 return ("null");
622
623 switch(sa->sa_family) {
624 case AF_INET:
625 {
626 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
627
628 if ((sin->sin_addr.s_addr == INADDR_ANY) &&
629 mask &&
630 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr)
631 ==0L)
632 cp = "default" ;
633 else if (flags & RTF_HOST)
634 cp = routename(sin->sin_addr.s_addr);
635 else if (mask)
636 cp = netname(sin->sin_addr.s_addr,
637 ntohl(((struct sockaddr_in *)mask)
638 ->sin_addr.s_addr));
639 else
640 cp = netname(sin->sin_addr.s_addr, 0L);
641 break;
642 }
643
644 #ifdef INET6
645 case AF_INET6:
646 {
647 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
648 struct in6_addr *in6 = &sa6->sin6_addr;
649
650 /*
651 * XXX: This is a special workaround for KAME kernels.
652 * sin6_scope_id field of SA should be set in the future.
653 */
654 if (IN6_IS_ADDR_LINKLOCAL(in6) ||
655 IN6_IS_ADDR_MC_LINKLOCAL(in6)) {
656 /* XXX: override is ok? */
657 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]);
658 *(u_short *)&in6->s6_addr[2] = 0;
659 }
660
661 if (flags & RTF_HOST)
662 cp = routename6(sa6);
663 else if (mask)
664 cp = netname6(sa6,
665 &((struct sockaddr_in6 *)mask)->sin6_addr);
666 else {
667 cp = netname6(sa6, NULL);
668 }
669 break;
670 }
671 #endif /*INET6*/
672
673 case AF_NETGRAPH:
674 {
675 printf("%s", ((struct sockaddr_ng *)sa)->sg_data);
676 break;
677 }
678 case AF_LINK:
679 {
680 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
681
682 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
683 sdl->sdl_slen == 0)
684 (void) sprintf(workbuf, "link#%d", sdl->sdl_index);
685 else
686 switch (sdl->sdl_type) {
687
688 case IFT_ETHER:
689 case IFT_L2VLAN:
690 case IFT_CARP:
691 if (sdl->sdl_alen == ETHER_ADDR_LEN) {
692 cp = ether_ntoa((struct ether_addr *)
693 (sdl->sdl_data + sdl->sdl_nlen));
694 break;
695 }
696 /* FALLTHROUGH */
697 default:
698 cp = link_ntoa(sdl);
699 break;
700 }
701 break;
702 }
703
704 case AF_MPLS:
705 {
706 struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa;
707
708 (void) sprintf(workbuf, "%d", ntohl(smpls->smpls_label));
709 break;
710 }
711
712 default:
713 {
714 u_char *s = (u_char *)sa->sa_data, *slim;
715 char *cq, *cqlim;
716
717 cq = workbuf;
718 slim = sa->sa_len + (u_char *) sa;
719 cqlim = cq + sizeof(workbuf) - 6;
720 cq += sprintf(cq, "(%d)", sa->sa_family);
721 while (s < slim && cq < cqlim) {
722 cq += sprintf(cq, " %02x", *s++);
723 if (s < slim)
724 cq += sprintf(cq, "%02x", *s++);
725 }
726 cp = workbuf;
727 }
728 }
729
730 return (cp);
731 }
732
733 static void
734 p_flags(int f, const char *format)
735 {
736 printf(format, fmt_flags(f));
737 }
738
739 static const char *
740 fmt_flags(int f)
741 {
742 static char name[33];
743 char *flags;
744 struct bits *p = bits;
745
746 for (flags = name; p->b_mask; p++)
747 if (p->b_mask & f)
748 *flags++ = p->b_val;
749 *flags = '\0';
750 return (name);
751 }
752
753 static void
754 p_rtentry(struct rtentry *rt)
755 {
756 static struct ifnet ifnet, *lastif;
757 struct rtentry parent;
758 static char buffer[128];
759 static char prettyname[128];
760 struct sockaddr *sa;
761 sa_u addr, mask;
762
763 /*
764 * Don't print protocol-cloned routes unless -a or -A.
765 */
766 if (rt->rt_flags & RTF_WASCLONED && !(aflag || Aflag)) {
767 if (kget(rt->rt_parent, parent) != 0)
768 return;
769 if (parent.rt_flags & RTF_PRCLONING)
770 return;
771 }
772
773 bzero(&addr, sizeof(addr));
774 if ((sa = kgetsa(rt_key(rt))))
775 bcopy(sa, &addr, sa->sa_len);
776 bzero(&mask, sizeof(mask));
777 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt))))
778 bcopy(sa, &mask, sa->sa_len);
779 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst);
780 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw);
781 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags);
782 p_flags(rt->rt_flags, buffer);
783 if (addr.u_sa.sa_family == AF_INET || Wflag) {
784 printf("%*ld %*lu ", wid_refs, rt->rt_refcnt,
785 wid_use, rt->rt_use);
786 if (Wflag) {
787 if (rt->rt_rmx.rmx_mtu != 0)
788 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu);
789 else
790 printf("%*s ", wid_mtu, "");
791 }
792 }
793 if (rt->rt_ifp) {
794 if (rt->rt_ifp != lastif) {
795 if (kget(rt->rt_ifp, ifnet) == 0)
796 strlcpy(prettyname, ifnet.if_xname,
797 sizeof(prettyname));
798 else
799 strlcpy(prettyname, "---", sizeof(prettyname));
800 lastif = rt->rt_ifp;
801 }
802 printf("%*.*s", wid_if, wid_if, prettyname);
803 if (rt->rt_rmx.rmx_expire) {
804 struct timespec sp;
805 int expire_time;
806
807 clock_gettime(CLOCK_MONOTONIC, &sp);
808
809 expire_time = (int)(rt->rt_rmx.rmx_expire - sp.tv_sec);
810 if (expire_time > 0)
811 printf(" %*d", wid_expire, (int)expire_time);
812 else
813 printf("%*s ", wid_expire, "");
814 } else {
815 printf("%*s ", wid_expire, "");
816 }
817 if (rt->rt_nodes[0].rn_dupedkey)
818 printf(" =>");
819 }
820 if (Wflag) {
821 if (rt->rt_shim[0] != NULL)
822 printf(" %-*s", wid_mplslops, labelops(rt));
823 else
824 printf(" %-*s", wid_mplslops, "");
825 if (rt->rt_rmx.rmx_msl != 0)
826 printf(" %*lu", wid_msl, rt->rt_rmx.rmx_msl);
827 else
828 printf("%*s ", wid_msl, "");
829 if (rt->rt_rmx.rmx_iwmaxsegs != 0)
830 printf(" %*lu", wid_iwmax, rt->rt_rmx.rmx_iwmaxsegs);
831 else
832 printf("%*s ", wid_iwmax, "");
833 if (rt->rt_rmx.rmx_iwcapsegs != 0)
834 printf(" %*lu", wid_iw, rt->rt_rmx.rmx_iwcapsegs);
835 else
836 printf("%*s ", wid_iw, "");
837 }
838 putchar('\n');
839 }
840
841 char *
842 routename(u_long in)
843 {
844 char *cp;
845 static char line[MAXHOSTNAMELEN];
846 struct hostent *hp;
847
848 cp = NULL;
849 if (!numeric_addr) {
850 hp = gethostbyaddr(&in, sizeof (struct in_addr), AF_INET);
851 if (hp) {
852 cp = hp->h_name;
853 trimdomain(cp, strlen(cp));
854 }
855 }
856 if (cp) {
857 strncpy(line, cp, sizeof(line) - 1);
858 line[sizeof(line) - 1] = '\0';
859 } else {
860 #define C(x) ((x) & 0xff)
861 in = ntohl(in);
862 sprintf(line, "%lu.%lu.%lu.%lu",
863 C(in >> 24), C(in >> 16), C(in >> 8), C(in));
864 }
865 return (line);
866 }
867
868 static u_long
869 forgemask(u_long a)
870 {
871 u_long m;
872
873 if (IN_CLASSA(a))
874 m = IN_CLASSA_NET;
875 else if (IN_CLASSB(a))
876 m = IN_CLASSB_NET;
877 else
878 m = IN_CLASSC_NET;
879 return (m);
880 }
881
882 static void
883 domask(char *dst, u_long addr, u_long mask)
884 {
885 int b, i;
886
887 if (!mask || (forgemask(addr) == mask)) {
888 *dst = '\0';
889 return;
890 }
891 i = 0;
892 for (b = 0; b < 32; b++)
893 if (mask & (1 << b)) {
894 int bb;
895
896 i = b;
897 for (bb = b+1; bb < 32; bb++)
898 if (!(mask & (1 << bb))) {
899 i = -1; /* noncontig */
900 break;
901 }
902 break;
903 }
904 if (i == -1)
905 sprintf(dst, "&0x%lx", mask);
906 else
907 sprintf(dst, "/%d", 32-i);
908 }
909
910 /*
911 * Return the name of the network whose address is given.
912 * The address is assumed to be that of a net or subnet, not a host.
913 */
914 char *
915 netname(u_long in, u_long mask)
916 {
917 char *cp = NULL;
918 static char line[MAXHOSTNAMELEN];
919 struct netent *np = NULL;
920 u_long dmask;
921 u_long i;
922
923 #define NSHIFT(m) ( \
924 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \
925 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \
926 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \
927 0)
928
929 i = ntohl(in);
930 dmask = forgemask(i);
931 if (!numeric_addr && i) {
932 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET);
933 if (np == NULL && mask == 0)
934 np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET);
935 if (np != NULL) {
936 cp = np->n_name;
937 trimdomain(cp, strlen(cp));
938 }
939 }
940 #undef NSHIFT
941 if (cp != NULL) {
942 strncpy(line, cp, sizeof(line) - 1);
943 line[sizeof(line) - 1] = '\0';
944 } else {
945 if (mask <= IN_CLASSA_NET &&
946 (i & IN_CLASSA_HOST) == 0) {
947 sprintf(line, "%lu", C(i >> 24));
948 } else if (mask <= IN_CLASSB_NET &&
949 (i & IN_CLASSB_HOST) == 0) {
950 sprintf(line, "%lu.%lu",
951 C(i >> 24), C(i >> 16));
952 } else if (mask <= IN_CLASSC_NET &&
953 (i & IN_CLASSC_HOST) == 0) {
954 sprintf(line, "%lu.%lu.%lu",
955 C(i >> 24), C(i >> 16), C(i >> 8));
956 } else {
957 sprintf(line, "%lu.%lu.%lu.%lu",
958 C(i >> 24), C(i >> 16), C(i >> 8), C(i));
959 }
960 }
961 domask(line + strlen(line), i, mask);
962 return (line);
963 }
964
965 #ifdef INET6
966 const char *
967 netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask)
968 {
969 static char line[MAXHOSTNAMELEN];
970 u_char *p = (u_char *)mask;
971 u_char *lim;
972 int masklen, illegal = 0, flag = NI_WITHSCOPEID;
973
974 if (mask) {
975 for (masklen = 0, lim = p + 16; p < lim; p++) {
976 switch (*p) {
977 case 0xff:
978 masklen += 8;
979 break;
980 case 0xfe:
981 masklen += 7;
982 break;
983 case 0xfc:
984 masklen += 6;
985 break;
986 case 0xf8:
987 masklen += 5;
988 break;
989 case 0xf0:
990 masklen += 4;
991 break;
992 case 0xe0:
993 masklen += 3;
994 break;
995 case 0xc0:
996 masklen += 2;
997 break;
998 case 0x80:
999 masklen += 1;
1000 break;
1001 case 0x00:
1002 break;
1003 default:
1004 illegal ++;
1005 break;
1006 }
1007 }
1008 if (illegal)
1009 fprintf(stderr, "illegal prefixlen\n");
1010 }
1011 else
1012 masklen = 128;
1013
1014 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr))
1015 return("default");
1016
1017 if (numeric_addr)
1018 flag |= NI_NUMERICHOST;
1019 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line),
1020 NULL, 0, flag);
1021
1022 if (numeric_addr)
1023 sprintf(&line[strlen(line)], "/%d", masklen);
1024
1025 return line;
1026 }
1027
1028 char *
1029 routename6(struct sockaddr_in6 *sa6)
1030 {
1031 static char line[MAXHOSTNAMELEN];
1032 int flag = NI_WITHSCOPEID;
1033 /* use local variable for safety */
1034 struct sockaddr_in6 sa6_local;
1035
1036 sa6_local.sin6_family = AF_INET6;
1037 sa6_local.sin6_len = sizeof(sa6_local);
1038 sa6_local.sin6_addr = sa6->sin6_addr;
1039 sa6_local.sin6_scope_id = sa6->sin6_scope_id;
1040
1041 if (numeric_addr)
1042 flag |= NI_NUMERICHOST;
1043
1044 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len,
1045 line, sizeof(line), NULL, 0, flag);
1046
1047 return line;
1048 }
1049 #endif /*INET6*/
1050
1051 /*
1052 * Print routing statistics
1053 */
1054 void
1055 rt_stats(void)
1056 {
1057 struct rtstatistics rts;
1058 int error = 0;
1059
1060 error = kinfo_get_net_rtstatistics(&rts);
1061 if (error) {
1062 printf("routing: could not retrieve statistics\n");
1063 return;
1064 }
1065 printf("routing:\n");
1066
1067 #define p(f, m) if (rts.f || sflag <= 1) \
1068 printf(m, rts.f, plural(rts.f))
1069
1070 p(rts_badredirect, "\t%lu bad routing redirect%s\n");
1071 p(rts_dynamic, "\t%lu dynamically created route%s\n");
1072 p(rts_newgateway, "\t%lu new gateway%s due to redirects\n");
1073 p(rts_unreach, "\t%lu destination%s found unreachable\n");
1074 p(rts_wildcard, "\t%lu use%s of a wildcard route\n");
1075 #undef p
1076 }
1077
1078 static const char *
1079 labelops(struct rtentry *rt)
1080 {
1081 const char *lops[] = { "push", "pop", "swap", "pop all" };
1082 static char buffer[100];
1083 char *cp = buffer;
1084 struct sockaddr_mpls *smpls;
1085 int i;
1086
1087 for (i=0; i<MPLS_MAXLOPS; ++i) {
1088
1089 if (rt->rt_shim[i] == NULL)
1090 break;
1091 if (i>0) {
1092 cp += snprintf(cp,
1093 sizeof(buffer) - (cp - buffer),
1094 ", ");
1095 }
1096 smpls = (struct sockaddr_mpls *)kgetsa(rt->rt_shim[i]);
1097 if (smpls->smpls_op != MPLSLOP_POP &&
1098 smpls->smpls_op != MPLSLOP_POPALL){
1099 cp += snprintf(cp,
1100 sizeof(buffer) - (cp - buffer),
1101 "%s %d",
1102 lops[smpls->smpls_op - 1],
1103 ntohl(smpls->smpls_label));
1104 } else {
1105 cp += snprintf(cp,
1106 sizeof(buffer) - (cp - buffer),
1107 "%s",
1108 lops[smpls->smpls_op - 1]);
1109 }
1110 }
1111
1112 return (buffer);
1113 }
DragonFly BSD