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 * 4. 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
30 #if 0
31 #ifndef lint
32 static char sccsid[] = "From: @(#)route.c 8.6 (Berkeley) 4/28/95";
33 #endif /* not lint */
34 #endif
35
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
38
39 #include <sys/param.h>
40 #include <sys/protosw.h>
41 #include <sys/socket.h>
42 #include <sys/socketvar.h>
43 #include <sys/time.h>
44
45 #include <net/ethernet.h>
46 #include <net/if.h>
47 #include <net/if_var.h>
48 #include <net/if_dl.h>
49 #include <net/if_types.h>
50 #include <net/radix.h>
51 #define _WANT_RTENTRY
52 #include <net/route.h>
53
54 #include <netinet/in.h>
55 #include <netipx/ipx.h>
56 #include <netatalk/at.h>
57 #include <netgraph/ng_socket.h>
58
59 #include <sys/sysctl.h>
60
61 #include <arpa/inet.h>
62 #include <ifaddrs.h>
63 #include <libutil.h>
64 #include <netdb.h>
65 #include <nlist.h>
66 #include <stdint.h>
67 #include <stdio.h>
68 #include <stdlib.h>
69 #include <string.h>
70 #include <sysexits.h>
71 #include <unistd.h>
72 #include <err.h>
73 #include "netstat.h"
74
75 #define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d)))
76
77 /*
78 * Definitions for showing gateway flags.
79 */
80 struct bits {
81 u_long b_mask;
82 char b_val;
83 } bits[] = {
84 { RTF_UP, 'U' },
85 { RTF_GATEWAY, 'G' },
86 { RTF_HOST, 'H' },
87 { RTF_REJECT, 'R' },
88 { RTF_DYNAMIC, 'D' },
89 { RTF_MODIFIED, 'M' },
90 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */
91 { RTF_XRESOLVE, 'X' },
92 { RTF_STATIC, 'S' },
93 { RTF_PROTO1, '1' },
94 { RTF_PROTO2, '2' },
95 { RTF_PROTO3, '3' },
96 { RTF_BLACKHOLE,'B' },
97 { RTF_BROADCAST,'b' },
98 #ifdef RTF_LLINFO
99 { RTF_LLINFO, 'L' },
100 #endif
101 { 0 , 0 }
102 };
103
104 /*
105 * kvm(3) bindings for every needed symbol
106 */
107 static struct nlist rl[] = {
108 #define N_RTSTAT 0
109 { .n_name = "_rtstat" },
110 #define N_RTREE 1
111 { .n_name = "_rt_tables"},
112 #define N_RTTRASH 2
113 { .n_name = "_rttrash" },
114 { .n_name = NULL },
115 };
116
117 typedef union {
118 long dummy; /* Helps align structure. */
119 struct sockaddr u_sa;
120 u_short u_data[128];
121 } sa_u;
122
123 static sa_u pt_u;
124
125 struct ifmap_entry {
126 char ifname[IFNAMSIZ];
127 };
128
129 static struct ifmap_entry *ifmap;
130 static int ifmap_size;
131
132 int do_rtent = 0;
133 struct rtentry rtentry;
134 struct radix_node rnode;
135 struct radix_mask rmask;
136
137 int NewTree = 1;
138
139 struct timespec uptime;
140
141 static struct sockaddr *kgetsa(struct sockaddr *);
142 static void size_cols(int ef, struct radix_node *rn);
143 static void size_cols_tree(struct radix_node *rn);
144 static void size_cols_rtentry(struct rtentry *rt);
145 static void p_rtnode_kvm(void);
146 static void p_rtable_sysctl(int, int);
147 static void p_rtable_kvm(int, int );
148 static void p_rtree_kvm(struct radix_node *);
149 static void p_rtentry_sysctl(struct rt_msghdr *);
150 static void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int);
151 static const char *fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask,
152 int flags);
153 static void p_flags(int, const char *);
154 static const char *fmt_flags(int f);
155 static void p_rtentry_kvm(struct rtentry *);
156 static void domask(char *, in_addr_t, u_long);
157
158 /*
159 * Print routing tables.
160 */
161 void
routepr(int fibnum,int af)162 routepr(int fibnum, int af)
163 {
164 size_t intsize;
165 int numfibs;
166
167 intsize = sizeof(int);
168 if (fibnum == -1 &&
169 sysctlbyname("net.my_fibnum", &fibnum, &intsize, NULL, 0) == -1)
170 fibnum = 0;
171 if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1)
172 numfibs = 1;
173 if (fibnum < 0 || fibnum > numfibs - 1)
174 errx(EX_USAGE, "%d: invalid fib", fibnum);
175 /*
176 * Since kernel & userland use different timebase
177 * (time_uptime vs time_second) and we are reading kernel memory
178 * directly we should do rt_expire --> expire_time conversion.
179 */
180 if (clock_gettime(CLOCK_UPTIME, &uptime) < 0)
181 err(EX_OSERR, "clock_gettime() failed");
182
183 printf("Routing tables");
184 if (fibnum)
185 printf(" (fib: %d)", fibnum);
186 printf("\n");
187
188 if (Aflag == 0 && live != 0 && NewTree)
189 p_rtable_sysctl(fibnum, af);
190 else
191 p_rtable_kvm(fibnum, af);
192 }
193
194
195 /*
196 * Print address family header before a section of the routing table.
197 */
198 void
pr_family(int af1)199 pr_family(int af1)
200 {
201 const char *afname;
202
203 switch (af1) {
204 case AF_INET:
205 afname = "Internet";
206 break;
207 #ifdef INET6
208 case AF_INET6:
209 afname = "Internet6";
210 break;
211 #endif /*INET6*/
212 case AF_IPX:
213 afname = "IPX";
214 break;
215 case AF_ISO:
216 afname = "ISO";
217 break;
218 case AF_APPLETALK:
219 afname = "AppleTalk";
220 break;
221 case AF_CCITT:
222 afname = "X.25";
223 break;
224 case AF_NETGRAPH:
225 afname = "Netgraph";
226 break;
227 default:
228 afname = NULL;
229 break;
230 }
231 if (afname)
232 printf("\n%s:\n", afname);
233 else
234 printf("\nProtocol Family %d:\n", af1);
235 }
236
237 /* column widths; each followed by one space */
238 #ifndef INET6
239 #define WID_DST_DEFAULT(af) 18 /* width of destination column */
240 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */
241 #define WID_IF_DEFAULT(af) (Wflag ? 10 : 8) /* width of netif column */
242 #else
243 #define WID_DST_DEFAULT(af) \
244 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18)
245 #define WID_GW_DEFAULT(af) \
246 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18)
247 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 10 : 8))
248 #endif /*INET6*/
249
250 static int wid_dst;
251 static int wid_gw;
252 static int wid_flags;
253 static int wid_pksent;
254 static int wid_mtu;
255 static int wid_if;
256 static int wid_expire;
257
258 static void
size_cols(int ef,struct radix_node * rn)259 size_cols(int ef, struct radix_node *rn)
260 {
261 wid_dst = WID_DST_DEFAULT(ef);
262 wid_gw = WID_GW_DEFAULT(ef);
263 wid_flags = 6;
264 wid_pksent = 8;
265 wid_mtu = 6;
266 wid_if = WID_IF_DEFAULT(ef);
267 wid_expire = 6;
268
269 if (Wflag && rn != NULL)
270 size_cols_tree(rn);
271 }
272
273 static void
size_cols_tree(struct radix_node * rn)274 size_cols_tree(struct radix_node *rn)
275 {
276 again:
277 if (kget(rn, rnode) != 0)
278 return;
279 if (!(rnode.rn_flags & RNF_ACTIVE))
280 return;
281 if (rnode.rn_bit < 0) {
282 if ((rnode.rn_flags & RNF_ROOT) == 0) {
283 if (kget(rn, rtentry) != 0)
284 return;
285 size_cols_rtentry(&rtentry);
286 }
287 if ((rn = rnode.rn_dupedkey))
288 goto again;
289 } else {
290 rn = rnode.rn_right;
291 size_cols_tree(rnode.rn_left);
292 size_cols_tree(rn);
293 }
294 }
295
296 static void
size_cols_rtentry(struct rtentry * rt)297 size_cols_rtentry(struct rtentry *rt)
298 {
299 static struct ifnet ifnet, *lastif;
300 static char buffer[100];
301 const char *bp;
302 struct sockaddr *sa;
303 sa_u addr, mask;
304 int len;
305
306 bzero(&addr, sizeof(addr));
307 if ((sa = kgetsa(rt_key(rt))))
308 bcopy(sa, &addr, sa->sa_len);
309 bzero(&mask, sizeof(mask));
310 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt))))
311 bcopy(sa, &mask, sa->sa_len);
312 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags);
313 len = strlen(bp);
314 wid_dst = MAX(len, wid_dst);
315
316 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST);
317 len = strlen(bp);
318 wid_gw = MAX(len, wid_gw);
319
320 bp = fmt_flags(rt->rt_flags);
321 len = strlen(bp);
322 wid_flags = MAX(len, wid_flags);
323
324 if (Wflag) {
325 len = snprintf(buffer, sizeof(buffer), "%ju",
326 (uintmax_t )kread_counter((u_long )rt->rt_pksent));
327 wid_pksent = MAX(len, wid_pksent);
328 }
329 if (rt->rt_ifp) {
330 if (rt->rt_ifp != lastif) {
331 if (kget(rt->rt_ifp, ifnet) == 0)
332 len = strlen(ifnet.if_xname);
333 else
334 len = strlen("---");
335 lastif = rt->rt_ifp;
336 wid_if = MAX(len, wid_if);
337 }
338 if (rt->rt_expire) {
339 time_t expire_time;
340
341 if ((expire_time =
342 rt->rt_expire - uptime.tv_sec) > 0) {
343 len = snprintf(buffer, sizeof(buffer), "%d",
344 (int)expire_time);
345 wid_expire = MAX(len, wid_expire);
346 }
347 }
348 }
349 }
350
351
352 /*
353 * Print header for routing table columns.
354 */
355 void
pr_rthdr(int af1)356 pr_rthdr(int af1)
357 {
358
359 if (Aflag)
360 printf("%-8.8s ","Address");
361 if (Wflag) {
362 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n",
363 wid_dst, wid_dst, "Destination",
364 wid_gw, wid_gw, "Gateway",
365 wid_flags, wid_flags, "Flags",
366 wid_pksent, wid_pksent, "Use",
367 wid_mtu, wid_mtu, "Mtu",
368 wid_if, wid_if, "Netif",
369 wid_expire, "Expire");
370 } else {
371 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n",
372 wid_dst, wid_dst, "Destination",
373 wid_gw, wid_gw, "Gateway",
374 wid_flags, wid_flags, "Flags",
375 wid_if, wid_if, "Netif",
376 wid_expire, "Expire");
377 }
378 }
379
380 static struct sockaddr *
kgetsa(struct sockaddr * dst)381 kgetsa(struct sockaddr *dst)
382 {
383
384 if (kget(dst, pt_u.u_sa) != 0)
385 return (NULL);
386 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa))
387 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len);
388 return (&pt_u.u_sa);
389 }
390
391 /*
392 * Print kernel routing tables for given fib
393 * using debugging kvm(3) interface.
394 */
395 static void
p_rtable_kvm(int fibnum,int af)396 p_rtable_kvm(int fibnum, int af)
397 {
398 struct radix_node_head **rnhp, *rnh, head;
399 struct radix_node_head **rt_tables;
400 u_long rtree;
401 int fam, af_size;
402
403 kresolve_list(rl);
404 if ((rtree = rl[N_RTREE].n_value) == 0) {
405 printf("rt_tables: symbol not in namelist\n");
406 return;
407 }
408
409 af_size = (AF_MAX + 1) * sizeof(struct radix_node_head *);
410 rt_tables = calloc(1, af_size);
411 if (rt_tables == NULL)
412 err(EX_OSERR, "memory allocation failed");
413
414 if (kread((u_long)(rtree), (char *)(rt_tables) + fibnum * af_size,
415 af_size) != 0)
416 err(EX_OSERR, "error retrieving radix pointers");
417 for (fam = 0; fam <= AF_MAX; fam++) {
418 int tmpfib;
419
420 switch (fam) {
421 case AF_INET6:
422 case AF_INET:
423 tmpfib = fibnum;
424 break;
425 default:
426 tmpfib = 0;
427 }
428 rnhp = (struct radix_node_head **)*rt_tables;
429 /* Calculate the in-kernel address. */
430 rnhp += tmpfib * (AF_MAX + 1) + fam;
431 /* Read the in kernel rhn pointer. */
432 if (kget(rnhp, rnh) != 0)
433 continue;
434 if (rnh == NULL)
435 continue;
436 /* Read the rnh data. */
437 if (kget(rnh, head) != 0)
438 continue;
439 if (fam == AF_UNSPEC) {
440 if (Aflag && af == 0) {
441 printf("Netmasks:\n");
442 p_rtree_kvm(head.rnh_treetop);
443 }
444 } else if (af == AF_UNSPEC || af == fam) {
445 size_cols(fam, head.rnh_treetop);
446 pr_family(fam);
447 do_rtent = 1;
448 pr_rthdr(fam);
449 p_rtree_kvm(head.rnh_treetop);
450 }
451 }
452
453 free(rt_tables);
454 }
455
456 /*
457 * Print given kernel radix tree using
458 * debugging kvm(3) interface.
459 */
460 static void
p_rtree_kvm(struct radix_node * rn)461 p_rtree_kvm(struct radix_node *rn)
462 {
463
464 again:
465 if (kget(rn, rnode) != 0)
466 return;
467 if (!(rnode.rn_flags & RNF_ACTIVE))
468 return;
469 if (rnode.rn_bit < 0) {
470 if (Aflag)
471 printf("%-8.8lx ", (u_long)rn);
472 if (rnode.rn_flags & RNF_ROOT) {
473 if (Aflag)
474 printf("(root node)%s",
475 rnode.rn_dupedkey ? " =>\n" : "\n");
476 } else if (do_rtent) {
477 if (kget(rn, rtentry) == 0) {
478 p_rtentry_kvm(&rtentry);
479 if (Aflag)
480 p_rtnode_kvm();
481 }
482 } else {
483 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key),
484 NULL, 0, 44);
485 putchar('\n');
486 }
487 if ((rn = rnode.rn_dupedkey))
488 goto again;
489 } else {
490 if (Aflag && do_rtent) {
491 printf("%-8.8lx ", (u_long)rn);
492 p_rtnode_kvm();
493 }
494 rn = rnode.rn_right;
495 p_rtree_kvm(rnode.rn_left);
496 p_rtree_kvm(rn);
497 }
498 }
499
500 char nbuf[20];
501
502 static void
p_rtnode_kvm(void)503 p_rtnode_kvm(void)
504 {
505 struct radix_mask *rm = rnode.rn_mklist;
506
507 if (rnode.rn_bit < 0) {
508 if (rnode.rn_mask) {
509 printf("\t mask ");
510 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask),
511 NULL, 0, -1);
512 } else if (rm == 0)
513 return;
514 } else {
515 sprintf(nbuf, "(%d)", rnode.rn_bit);
516 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right);
517 }
518 while (rm) {
519 if (kget(rm, rmask) != 0)
520 break;
521 sprintf(nbuf, " %d refs, ", rmask.rm_refs);
522 printf(" mk = %8.8lx {(%d),%s",
523 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " ");
524 if (rmask.rm_flags & RNF_NORMAL) {
525 struct radix_node rnode_aux;
526 printf(" <normal>, ");
527 if (kget(rmask.rm_leaf, rnode_aux) == 0)
528 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask),
529 NULL, 0, -1);
530 else
531 p_sockaddr(NULL, NULL, 0, -1);
532 } else
533 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask),
534 NULL, 0, -1);
535 putchar('}');
536 if ((rm = rmask.rm_mklist))
537 printf(" ->");
538 }
539 putchar('\n');
540 }
541
542 static void
p_rtable_sysctl(int fibnum,int af)543 p_rtable_sysctl(int fibnum, int af)
544 {
545 size_t needed;
546 int mib[7];
547 char *buf, *next, *lim;
548 struct rt_msghdr *rtm;
549 struct sockaddr *sa;
550 int fam = 0, ifindex = 0, size;
551
552 struct ifaddrs *ifap, *ifa;
553 struct sockaddr_dl *sdl;
554
555 /*
556 * Retrieve interface list at first
557 * since we need #ifindex -> if_xname match
558 */
559 if (getifaddrs(&ifap) != 0)
560 err(EX_OSERR, "getifaddrs");
561
562 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
563
564 if (ifa->ifa_addr->sa_family != AF_LINK)
565 continue;
566
567 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
568 ifindex = sdl->sdl_index;
569
570 if (ifindex >= ifmap_size) {
571 size = roundup(ifindex + 1, 32) *
572 sizeof(struct ifmap_entry);
573 if ((ifmap = realloc(ifmap, size)) == NULL)
574 errx(2, "realloc(%d) failed", size);
575 memset(&ifmap[ifmap_size], 0,
576 size - ifmap_size *
577 sizeof(struct ifmap_entry));
578
579 ifmap_size = roundup(ifindex + 1, 32);
580 }
581
582 if (*ifmap[ifindex].ifname != '\0')
583 continue;
584
585 strlcpy(ifmap[ifindex].ifname, ifa->ifa_name, IFNAMSIZ);
586 }
587
588 freeifaddrs(ifap);
589
590 mib[0] = CTL_NET;
591 mib[1] = PF_ROUTE;
592 mib[2] = 0;
593 mib[3] = af;
594 mib[4] = NET_RT_DUMP;
595 mib[5] = 0;
596 mib[6] = fibnum;
597 if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0)
598 err(EX_OSERR, "sysctl: net.route.0.%d.dump.%d estimate", af,
599 fibnum);
600 if ((buf = malloc(needed)) == NULL)
601 errx(2, "malloc(%lu)", (unsigned long)needed);
602 if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0)
603 err(1, "sysctl: net.route.0.%d.dump.%d", af, fibnum);
604 lim = buf + needed;
605 for (next = buf; next < lim; next += rtm->rtm_msglen) {
606 rtm = (struct rt_msghdr *)next;
607 if (rtm->rtm_version != RTM_VERSION)
608 continue;
609 /*
610 * Peek inside header to determine AF
611 */
612 sa = (struct sockaddr *)(rtm + 1);
613 if (fam != sa->sa_family) {
614 fam = sa->sa_family;
615 size_cols(fam, NULL);
616 pr_family(fam);
617 pr_rthdr(fam);
618 }
619 p_rtentry_sysctl(rtm);
620 }
621 free(buf);
622 }
623
624 static void
p_rtentry_sysctl(struct rt_msghdr * rtm)625 p_rtentry_sysctl(struct rt_msghdr *rtm)
626 {
627 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
628 char buffer[128];
629 char prettyname[128];
630 sa_u addr, mask, gw;
631 unsigned int l;
632
633 #define GETSA(_s, _f) { \
634 bzero(&(_s), sizeof(_s)); \
635 if (rtm->rtm_addrs & _f) { \
636 l = roundup(sa->sa_len, sizeof(long)); \
637 memcpy(&(_s), sa, (l > sizeof(_s)) ? sizeof(_s) : l); \
638 sa = (struct sockaddr *)((char *)sa + l); \
639 } \
640 }
641
642 GETSA(addr, RTA_DST);
643 GETSA(gw, RTA_GATEWAY);
644 GETSA(mask, RTA_NETMASK);
645 p_sockaddr(&addr.u_sa, &mask.u_sa, rtm->rtm_flags, wid_dst);
646 p_sockaddr(&gw.u_sa, NULL, RTF_HOST, wid_gw);
647
648 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags);
649 p_flags(rtm->rtm_flags, buffer);
650 if (Wflag) {
651 printf("%*lu ", wid_pksent, rtm->rtm_rmx.rmx_pksent);
652
653 if (rtm->rtm_rmx.rmx_mtu != 0)
654 printf("%*lu ", wid_mtu, rtm->rtm_rmx.rmx_mtu);
655 else
656 printf("%*s ", wid_mtu, "");
657 }
658
659 memset(prettyname, 0, sizeof(prettyname));
660 if (rtm->rtm_index < ifmap_size) {
661 strlcpy(prettyname, ifmap[rtm->rtm_index].ifname,
662 sizeof(prettyname));
663 if (*prettyname == '\0')
664 strlcpy(prettyname, "---", sizeof(prettyname));
665 }
666
667 printf("%*.*s", wid_if, wid_if, prettyname);
668 if (rtm->rtm_rmx.rmx_expire) {
669 time_t expire_time;
670
671 if ((expire_time =
672 rtm->rtm_rmx.rmx_expire - uptime.tv_sec) > 0)
673 printf(" %*d", wid_expire, (int)expire_time);
674 }
675
676 putchar('\n');
677 }
678
679 static void
p_sockaddr(struct sockaddr * sa,struct sockaddr * mask,int flags,int width)680 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width)
681 {
682 const char *cp;
683
684 cp = fmt_sockaddr(sa, mask, flags);
685
686 if (width < 0 )
687 printf("%s ", cp);
688 else {
689 if (numeric_addr)
690 printf("%-*s ", width, cp);
691 else
692 printf("%-*.*s ", width, width, cp);
693 }
694 }
695
696 static const char *
fmt_sockaddr(struct sockaddr * sa,struct sockaddr * mask,int flags)697 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags)
698 {
699 static char workbuf[128];
700 const char *cp;
701
702 if (sa == NULL)
703 return ("null");
704
705 switch(sa->sa_family) {
706 case AF_INET:
707 {
708 struct sockaddr_in *sockin = (struct sockaddr_in *)sa;
709
710 if ((sockin->sin_addr.s_addr == INADDR_ANY) &&
711 mask &&
712 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr)
713 ==0L)
714 cp = "default" ;
715 else if (flags & RTF_HOST)
716 cp = routename(sockin->sin_addr.s_addr);
717 else if (mask)
718 cp = netname(sockin->sin_addr.s_addr,
719 ((struct sockaddr_in *)mask)->sin_addr.s_addr);
720 else
721 cp = netname(sockin->sin_addr.s_addr, INADDR_ANY);
722 break;
723 }
724
725 #ifdef INET6
726 case AF_INET6:
727 {
728 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
729
730 /*
731 * The sa6->sin6_scope_id must be filled here because
732 * this sockaddr is extracted from kmem(4) directly
733 * and has KAME-specific embedded scope id in
734 * sa6->sin6_addr.s6_addr[2].
735 */
736 in6_fillscopeid(sa6);
737
738 if (flags & RTF_HOST)
739 cp = routename6(sa6);
740 else if (mask)
741 cp = netname6(sa6,
742 &((struct sockaddr_in6 *)mask)->sin6_addr);
743 else {
744 cp = netname6(sa6, NULL);
745 }
746 break;
747 }
748 #endif /*INET6*/
749
750 case AF_IPX:
751 {
752 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr;
753 if (ipx_nullnet(satoipx_addr(work)))
754 cp = "default";
755 else
756 cp = ipx_print(sa);
757 break;
758 }
759 case AF_APPLETALK:
760 {
761 if (!(flags & RTF_HOST) && mask)
762 cp = atalk_print2(sa,mask,9);
763 else
764 cp = atalk_print(sa,11);
765 break;
766 }
767 case AF_NETGRAPH:
768 {
769 strlcpy(workbuf, ((struct sockaddr_ng *)sa)->sg_data,
770 sizeof(workbuf));
771 cp = workbuf;
772 break;
773 }
774
775 case AF_LINK:
776 {
777 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
778
779 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
780 sdl->sdl_slen == 0) {
781 (void) sprintf(workbuf, "link#%d", sdl->sdl_index);
782 cp = workbuf;
783 } else
784 switch (sdl->sdl_type) {
785
786 case IFT_ETHER:
787 case IFT_L2VLAN:
788 case IFT_BRIDGE:
789 if (sdl->sdl_alen == ETHER_ADDR_LEN) {
790 cp = ether_ntoa((struct ether_addr *)
791 (sdl->sdl_data + sdl->sdl_nlen));
792 break;
793 }
794 /* FALLTHROUGH */
795 default:
796 cp = link_ntoa(sdl);
797 break;
798 }
799 break;
800 }
801
802 default:
803 {
804 u_char *s = (u_char *)sa->sa_data, *slim;
805 char *cq, *cqlim;
806
807 cq = workbuf;
808 slim = sa->sa_len + (u_char *) sa;
809 cqlim = cq + sizeof(workbuf) - 6;
810 cq += sprintf(cq, "(%d)", sa->sa_family);
811 while (s < slim && cq < cqlim) {
812 cq += sprintf(cq, " %02x", *s++);
813 if (s < slim)
814 cq += sprintf(cq, "%02x", *s++);
815 }
816 cp = workbuf;
817 }
818 }
819
820 return (cp);
821 }
822
823 static void
p_flags(int f,const char * format)824 p_flags(int f, const char *format)
825 {
826 printf(format, fmt_flags(f));
827 }
828
829 static const char *
fmt_flags(int f)830 fmt_flags(int f)
831 {
832 static char name[33];
833 char *flags;
834 struct bits *p = bits;
835
836 for (flags = name; p->b_mask; p++)
837 if (p->b_mask & f)
838 *flags++ = p->b_val;
839 *flags = '\0';
840 return (name);
841 }
842
843 static void
p_rtentry_kvm(struct rtentry * rt)844 p_rtentry_kvm(struct rtentry *rt)
845 {
846 static struct ifnet ifnet, *lastif;
847 static char buffer[128];
848 static char prettyname[128];
849 struct sockaddr *sa;
850 sa_u addr, mask;
851
852 bzero(&addr, sizeof(addr));
853 if ((sa = kgetsa(rt_key(rt))))
854 bcopy(sa, &addr, sa->sa_len);
855 bzero(&mask, sizeof(mask));
856 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt))))
857 bcopy(sa, &mask, sa->sa_len);
858 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst);
859 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw);
860 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags);
861 p_flags(rt->rt_flags, buffer);
862 if (Wflag) {
863 printf("%*ju ", wid_pksent,
864 (uintmax_t )kread_counter((u_long )rt->rt_pksent));
865
866 if (rt->rt_mtu != 0)
867 printf("%*lu ", wid_mtu, rt->rt_mtu);
868 else
869 printf("%*s ", wid_mtu, "");
870 }
871 if (rt->rt_ifp) {
872 if (rt->rt_ifp != lastif) {
873 if (kget(rt->rt_ifp, ifnet) == 0)
874 strlcpy(prettyname, ifnet.if_xname,
875 sizeof(prettyname));
876 else
877 strlcpy(prettyname, "---", sizeof(prettyname));
878 lastif = rt->rt_ifp;
879 }
880 printf("%*.*s", wid_if, wid_if, prettyname);
881 if (rt->rt_expire) {
882 time_t expire_time;
883
884 if ((expire_time =
885 rt->rt_expire - uptime.tv_sec) > 0)
886 printf(" %*d", wid_expire, (int)expire_time);
887 }
888 if (rt->rt_nodes[0].rn_dupedkey)
889 printf(" =>");
890 }
891 putchar('\n');
892 }
893
894 char *
routename(in_addr_t in)895 routename(in_addr_t in)
896 {
897 char *cp;
898 static char line[MAXHOSTNAMELEN];
899 struct hostent *hp;
900
901 cp = 0;
902 if (!numeric_addr) {
903 hp = gethostbyaddr(&in, sizeof (struct in_addr), AF_INET);
904 if (hp) {
905 cp = hp->h_name;
906 trimdomain(cp, strlen(cp));
907 }
908 }
909 if (cp) {
910 strlcpy(line, cp, sizeof(line));
911 } else {
912 #define C(x) ((x) & 0xff)
913 in = ntohl(in);
914 sprintf(line, "%u.%u.%u.%u",
915 C(in >> 24), C(in >> 16), C(in >> 8), C(in));
916 }
917 return (line);
918 }
919
920 #define NSHIFT(m) ( \
921 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \
922 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \
923 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \
924 0)
925
926 static void
domask(char * dst,in_addr_t addr __unused,u_long mask)927 domask(char *dst, in_addr_t addr __unused, u_long mask)
928 {
929 int b, i;
930
931 if (mask == 0 || (!numeric_addr && NSHIFT(mask) != 0)) {
932 *dst = '\0';
933 return;
934 }
935 i = 0;
936 for (b = 0; b < 32; b++)
937 if (mask & (1 << b)) {
938 int bb;
939
940 i = b;
941 for (bb = b+1; bb < 32; bb++)
942 if (!(mask & (1 << bb))) {
943 i = -1; /* noncontig */
944 break;
945 }
946 break;
947 }
948 if (i == -1)
949 sprintf(dst, "&0x%lx", mask);
950 else
951 sprintf(dst, "/%d", 32-i);
952 }
953
954 /*
955 * Return the name of the network whose address is given.
956 */
957 char *
netname(in_addr_t in,in_addr_t mask)958 netname(in_addr_t in, in_addr_t mask)
959 {
960 char *cp = 0;
961 static char line[MAXHOSTNAMELEN];
962 struct netent *np = 0;
963 in_addr_t i;
964
965 /* It is ok to supply host address. */
966 in &= mask;
967
968 i = ntohl(in);
969 if (!numeric_addr && i) {
970 np = getnetbyaddr(i >> NSHIFT(ntohl(mask)), AF_INET);
971 if (np != NULL) {
972 cp = np->n_name;
973 trimdomain(cp, strlen(cp));
974 }
975 }
976 if (cp != NULL) {
977 strlcpy(line, cp, sizeof(line));
978 } else {
979 inet_ntop(AF_INET, &in, line, sizeof(line) - 1);
980 }
981 domask(line + strlen(line), i, ntohl(mask));
982 return (line);
983 }
984
985 #undef NSHIFT
986
987 #ifdef INET6
988 void
in6_fillscopeid(struct sockaddr_in6 * sa6)989 in6_fillscopeid(struct sockaddr_in6 *sa6)
990 {
991 #if defined(__KAME__)
992 /*
993 * XXX: This is a special workaround for KAME kernels.
994 * sin6_scope_id field of SA should be set in the future.
995 */
996 if (IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr) ||
997 IN6_IS_ADDR_MC_NODELOCAL(&sa6->sin6_addr) ||
998 IN6_IS_ADDR_MC_LINKLOCAL(&sa6->sin6_addr)) {
999 if (sa6->sin6_scope_id == 0)
1000 sa6->sin6_scope_id =
1001 ntohs(*(u_int16_t *)&sa6->sin6_addr.s6_addr[2]);
1002 sa6->sin6_addr.s6_addr[2] = sa6->sin6_addr.s6_addr[3] = 0;
1003 }
1004 #endif
1005 }
1006
1007 const char *
netname6(struct sockaddr_in6 * sa6,struct in6_addr * mask)1008 netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask)
1009 {
1010 static char line[MAXHOSTNAMELEN];
1011 u_char *p = (u_char *)mask;
1012 u_char *lim;
1013 int masklen, illegal = 0, flag = 0;
1014
1015 if (mask) {
1016 for (masklen = 0, lim = p + 16; p < lim; p++) {
1017 switch (*p) {
1018 case 0xff:
1019 masklen += 8;
1020 break;
1021 case 0xfe:
1022 masklen += 7;
1023 break;
1024 case 0xfc:
1025 masklen += 6;
1026 break;
1027 case 0xf8:
1028 masklen += 5;
1029 break;
1030 case 0xf0:
1031 masklen += 4;
1032 break;
1033 case 0xe0:
1034 masklen += 3;
1035 break;
1036 case 0xc0:
1037 masklen += 2;
1038 break;
1039 case 0x80:
1040 masklen += 1;
1041 break;
1042 case 0x00:
1043 break;
1044 default:
1045 illegal ++;
1046 break;
1047 }
1048 }
1049 if (illegal)
1050 fprintf(stderr, "illegal prefixlen\n");
1051 }
1052 else
1053 masklen = 128;
1054
1055 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr))
1056 return("default");
1057
1058 if (numeric_addr)
1059 flag |= NI_NUMERICHOST;
1060 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line),
1061 NULL, 0, flag);
1062
1063 if (numeric_addr)
1064 sprintf(&line[strlen(line)], "/%d", masklen);
1065
1066 return line;
1067 }
1068
1069 char *
routename6(struct sockaddr_in6 * sa6)1070 routename6(struct sockaddr_in6 *sa6)
1071 {
1072 static char line[MAXHOSTNAMELEN];
1073 int flag = 0;
1074 /* use local variable for safety */
1075 struct sockaddr_in6 sa6_local;
1076
1077 sa6_local.sin6_family = AF_INET6;
1078 sa6_local.sin6_len = sizeof(sa6_local);
1079 sa6_local.sin6_addr = sa6->sin6_addr;
1080 sa6_local.sin6_scope_id = sa6->sin6_scope_id;
1081
1082 if (numeric_addr)
1083 flag |= NI_NUMERICHOST;
1084
1085 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len,
1086 line, sizeof(line), NULL, 0, flag);
1087
1088 return line;
1089 }
1090 #endif /*INET6*/
1091
1092 /*
1093 * Print routing statistics
1094 */
1095 void
rt_stats(void)1096 rt_stats(void)
1097 {
1098 struct rtstat rtstat;
1099 u_long rtsaddr, rttaddr;
1100 int rttrash;
1101
1102 kresolve_list(rl);
1103
1104 if ((rtsaddr = rl[N_RTSTAT].n_value) == 0) {
1105 printf("rtstat: symbol not in namelist\n");
1106 return;
1107 }
1108 if ((rttaddr = rl[N_RTTRASH].n_value) == 0) {
1109 printf("rttrash: symbol not in namelist\n");
1110 return;
1111 }
1112 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat));
1113 kread(rttaddr, (char *)&rttrash, sizeof (rttrash));
1114 printf("routing:\n");
1115
1116 #define p(f, m) if (rtstat.f || sflag <= 1) \
1117 printf(m, rtstat.f, plural(rtstat.f))
1118
1119 p(rts_badredirect, "\t%hu bad routing redirect%s\n");
1120 p(rts_dynamic, "\t%hu dynamically created route%s\n");
1121 p(rts_newgateway, "\t%hu new gateway%s due to redirects\n");
1122 p(rts_unreach, "\t%hu destination%s found unreachable\n");
1123 p(rts_wildcard, "\t%hu use%s of a wildcard route\n");
1124 #undef p
1125
1126 if (rttrash || sflag <= 1)
1127 printf("\t%u route%s not in table but not freed\n",
1128 rttrash, plural(rttrash));
1129 }
1130
1131 char *
ipx_print(struct sockaddr * sa)1132 ipx_print(struct sockaddr *sa)
1133 {
1134 u_short port;
1135 struct servent *sp = 0;
1136 const char *net = "", *host = "";
1137 char *p;
1138 u_char *q;
1139 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr;
1140 static char mybuf[50];
1141 char cport[10], chost[15], cnet[15];
1142
1143 port = ntohs(work.x_port);
1144
1145 if (ipx_nullnet(work) && ipx_nullhost(work)) {
1146
1147 if (port) {
1148 if (sp)
1149 sprintf(mybuf, "*.%s", sp->s_name);
1150 else
1151 sprintf(mybuf, "*.%x", port);
1152 } else
1153 sprintf(mybuf, "*.*");
1154
1155 return (mybuf);
1156 }
1157
1158 if (ipx_wildnet(work))
1159 net = "any";
1160 else if (ipx_nullnet(work))
1161 net = "*";
1162 else {
1163 q = work.x_net.c_net;
1164 sprintf(cnet, "%02x%02x%02x%02x",
1165 q[0], q[1], q[2], q[3]);
1166 for (p = cnet; *p == '0' && p < cnet + 8; p++)
1167 continue;
1168 net = p;
1169 }
1170
1171 if (ipx_wildhost(work))
1172 host = "any";
1173 else if (ipx_nullhost(work))
1174 host = "*";
1175 else {
1176 q = work.x_host.c_host;
1177 sprintf(chost, "%02x%02x%02x%02x%02x%02x",
1178 q[0], q[1], q[2], q[3], q[4], q[5]);
1179 for (p = chost; *p == '0' && p < chost + 12; p++)
1180 continue;
1181 host = p;
1182 }
1183
1184 if (port) {
1185 if (strcmp(host, "*") == 0)
1186 host = "";
1187 if (sp)
1188 snprintf(cport, sizeof(cport),
1189 "%s%s", *host ? "." : "", sp->s_name);
1190 else
1191 snprintf(cport, sizeof(cport),
1192 "%s%x", *host ? "." : "", port);
1193 } else
1194 *cport = 0;
1195
1196 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport);
1197 return(mybuf);
1198 }
1199
1200 char *
ipx_phost(struct sockaddr * sa)1201 ipx_phost(struct sockaddr *sa)
1202 {
1203 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa;
1204 struct sockaddr_ipx work;
1205 static union ipx_net ipx_zeronet;
1206 char *p;
1207
1208 work = *sipx;
1209
1210 work.sipx_addr.x_port = 0;
1211 work.sipx_addr.x_net = ipx_zeronet;
1212 p = ipx_print((struct sockaddr *)&work);
1213 if (strncmp("*.", p, 2) == 0) p += 2;
1214
1215 return(p);
1216 }
1217
1218 void
upHex(char * p0)1219 upHex(char *p0)
1220 {
1221 char *p = p0;
1222
1223 for (; *p; p++)
1224 switch (*p) {
1225
1226 case 'a':
1227 case 'b':
1228 case 'c':
1229 case 'd':
1230 case 'e':
1231 case 'f':
1232 *p += ('A' - 'a');
1233 break;
1234 }
1235 }
1236