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: stable/9/usr.bin/netstat/route.c 242025 2012-10-25 01:23:41Z eadler $");
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 #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 #include <sys/sysctl.h>
59
60 #include <arpa/inet.h>
61 #include <libutil.h>
62 #include <netdb.h>
63 #include <stdint.h>
64 #include <stdio.h>
65 #include <stdlib.h>
66 #include <string.h>
67 #include <sysexits.h>
68 #include <unistd.h>
69 #include <err.h>
70 #include "netstat.h"
71
72 #define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d)))
73
74 /*
75 * Definitions for showing gateway flags.
76 */
77 struct bits {
78 u_long b_mask;
79 char b_val;
80 } bits[] = {
81 { RTF_UP, 'U' },
82 { RTF_GATEWAY, 'G' },
83 { RTF_HOST, 'H' },
84 { RTF_REJECT, 'R' },
85 { RTF_DYNAMIC, 'D' },
86 { RTF_MODIFIED, 'M' },
87 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */
88 { RTF_XRESOLVE, 'X' },
89 { RTF_STATIC, 'S' },
90 { RTF_PROTO1, '1' },
91 { RTF_PROTO2, '2' },
92 { RTF_PRCLONING,'c' },
93 { RTF_PROTO3, '3' },
94 { RTF_BLACKHOLE,'B' },
95 { RTF_BROADCAST,'b' },
96 #ifdef RTF_LLINFO
97 { RTF_LLINFO, 'L' },
98 #endif
99 #ifdef RTF_WASCLONED
100 { RTF_WASCLONED,'W' },
101 #endif
102 #ifdef RTF_CLONING
103 { RTF_CLONING, 'C' },
104 #endif
105 { 0 , 0 }
106 };
107
108 typedef union {
109 long dummy; /* Helps align structure. */
110 struct sockaddr u_sa;
111 u_short u_data[128];
112 } sa_u;
113
114 static sa_u pt_u;
115
116 int do_rtent = 0;
117 struct rtentry rtentry;
118 struct radix_node rnode;
119 struct radix_mask rmask;
120 struct radix_node_head **rt_tables;
121
122 int NewTree = 0;
123
124 struct timespec uptime;
125
126 static struct sockaddr *kgetsa(struct sockaddr *);
127 static void size_cols(int ef, struct radix_node *rn);
128 static void size_cols_tree(struct radix_node *rn);
129 static void size_cols_rtentry(struct rtentry *rt);
130 static void p_tree(struct radix_node *);
131 static void p_rtnode(void);
132 static void ntreestuff(void);
133 static void np_rtentry(struct rt_msghdr *);
134 static void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int);
135 static const char *fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask,
136 int flags);
137 static void p_flags(int, const char *);
138 static const char *fmt_flags(int f);
139 static void p_rtentry(struct rtentry *);
140 static void domask(char *, in_addr_t, u_long);
141
142 /*
143 * Print routing tables.
144 */
145 void
routepr(u_long rtree)146 routepr(u_long rtree)
147 {
148 struct radix_node_head **rnhp, *rnh, head;
149 size_t intsize;
150 int fam, fibnum, numfibs;
151
152 intsize = sizeof(int);
153 if (sysctlbyname("net.my_fibnum", &fibnum, &intsize, NULL, 0) == -1)
154 fibnum = 0;
155 if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1)
156 numfibs = 1;
157 rt_tables = calloc(numfibs * (AF_MAX+1),
158 sizeof(struct radix_node_head *));
159 if (rt_tables == NULL)
160 err(EX_OSERR, "memory allocation failed");
161 /*
162 * Since kernel & userland use different timebase
163 * (time_uptime vs time_second) and we are reading kernel memory
164 * directly we should do rt_rmx.rmx_expire --> expire_time conversion.
165 */
166 if (clock_gettime(CLOCK_UPTIME, &uptime) < 0)
167 err(EX_OSERR, "clock_gettime() failed");
168
169 printf("Routing tables\n");
170
171 if (Aflag == 0 && NewTree)
172 ntreestuff();
173 else {
174 if (rtree == 0) {
175 printf("rt_tables: symbol not in namelist\n");
176 return;
177 }
178
179 if (kread((u_long)(rtree), (char *)(rt_tables), (numfibs *
180 (AF_MAX+1) * sizeof(struct radix_node_head *))) != 0)
181 return;
182 for (fam = 0; fam <= AF_MAX; fam++) {
183 int tmpfib;
184
185 switch (fam) {
186 case AF_INET6:
187 case AF_INET:
188 tmpfib = fibnum;
189 break;
190 default:
191 tmpfib = 0;
192 }
193 rnhp = (struct radix_node_head **)*rt_tables;
194 /* Calculate the in-kernel address. */
195 rnhp += tmpfib * (AF_MAX+1) + fam;
196 /* Read the in kernel rhn pointer. */
197 if (kget(rnhp, rnh) != 0)
198 continue;
199 if (rnh == NULL)
200 continue;
201 /* Read the rnh data. */
202 if (kget(rnh, head) != 0)
203 continue;
204 if (fam == AF_UNSPEC) {
205 if (Aflag && af == 0) {
206 printf("Netmasks:\n");
207 p_tree(head.rnh_treetop);
208 }
209 } else if (af == AF_UNSPEC || af == fam) {
210 size_cols(fam, head.rnh_treetop);
211 pr_family(fam);
212 do_rtent = 1;
213 pr_rthdr(fam);
214 p_tree(head.rnh_treetop);
215 }
216 }
217 }
218 }
219
220 /*
221 * Print address family header before a section of the routing table.
222 */
223 void
pr_family(int af1)224 pr_family(int af1)
225 {
226 const char *afname;
227
228 switch (af1) {
229 case AF_INET:
230 afname = "Internet";
231 break;
232 #ifdef INET6
233 case AF_INET6:
234 afname = "Internet6";
235 break;
236 #endif /*INET6*/
237 case AF_IPX:
238 afname = "IPX";
239 break;
240 case AF_ISO:
241 afname = "ISO";
242 break;
243 case AF_APPLETALK:
244 afname = "AppleTalk";
245 break;
246 case AF_CCITT:
247 afname = "X.25";
248 break;
249 case AF_NETGRAPH:
250 afname = "Netgraph";
251 break;
252 default:
253 afname = NULL;
254 break;
255 }
256 if (afname)
257 printf("\n%s:\n", afname);
258 else
259 printf("\nProtocol Family %d:\n", af1);
260 }
261
262 /* column widths; each followed by one space */
263 #ifndef INET6
264 #define WID_DST_DEFAULT(af) 18 /* width of destination column */
265 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */
266 #define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */
267 #else
268 #define WID_DST_DEFAULT(af) \
269 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18)
270 #define WID_GW_DEFAULT(af) \
271 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18)
272 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 : 6))
273 #endif /*INET6*/
274
275 static int wid_dst;
276 static int wid_gw;
277 static int wid_flags;
278 static int wid_refs;
279 static int wid_use;
280 static int wid_mtu;
281 static int wid_if;
282 static int wid_expire;
283
284 static void
size_cols(int ef __unused,struct radix_node * rn)285 size_cols(int ef __unused, struct radix_node *rn)
286 {
287 wid_dst = WID_DST_DEFAULT(ef);
288 wid_gw = WID_GW_DEFAULT(ef);
289 wid_flags = 6;
290 wid_refs = 6;
291 wid_use = 8;
292 wid_mtu = 6;
293 wid_if = WID_IF_DEFAULT(ef);
294 wid_expire = 6;
295
296 if (Wflag)
297 size_cols_tree(rn);
298 }
299
300 static void
size_cols_tree(struct radix_node * rn)301 size_cols_tree(struct radix_node *rn)
302 {
303 again:
304 if (kget(rn, rnode) != 0)
305 return;
306 if (!(rnode.rn_flags & RNF_ACTIVE))
307 return;
308 if (rnode.rn_bit < 0) {
309 if ((rnode.rn_flags & RNF_ROOT) == 0) {
310 if (kget(rn, rtentry) != 0)
311 return;
312 size_cols_rtentry(&rtentry);
313 }
314 if ((rn = rnode.rn_dupedkey))
315 goto again;
316 } else {
317 rn = rnode.rn_right;
318 size_cols_tree(rnode.rn_left);
319 size_cols_tree(rn);
320 }
321 }
322
323 static void
size_cols_rtentry(struct rtentry * rt)324 size_cols_rtentry(struct rtentry *rt)
325 {
326 static struct ifnet ifnet, *lastif;
327 static char buffer[100];
328 const char *bp;
329 struct sockaddr *sa;
330 sa_u addr, mask;
331 int len;
332
333 bzero(&addr, sizeof(addr));
334 if ((sa = kgetsa(rt_key(rt))))
335 bcopy(sa, &addr, sa->sa_len);
336 bzero(&mask, sizeof(mask));
337 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt))))
338 bcopy(sa, &mask, sa->sa_len);
339 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags);
340 len = strlen(bp);
341 wid_dst = MAX(len, wid_dst);
342
343 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST);
344 len = strlen(bp);
345 wid_gw = MAX(len, wid_gw);
346
347 bp = fmt_flags(rt->rt_flags);
348 len = strlen(bp);
349 wid_flags = MAX(len, wid_flags);
350
351 if (addr.u_sa.sa_family == AF_INET || Wflag) {
352 len = snprintf(buffer, sizeof(buffer), "%d", rt->rt_refcnt);
353 wid_refs = MAX(len, wid_refs);
354 len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use);
355 wid_use = MAX(len, wid_use);
356 if (Wflag && rt->rt_rmx.rmx_mtu != 0) {
357 len = snprintf(buffer, sizeof(buffer),
358 "%lu", rt->rt_rmx.rmx_mtu);
359 wid_mtu = MAX(len, wid_mtu);
360 }
361 }
362 if (rt->rt_ifp) {
363 if (rt->rt_ifp != lastif) {
364 if (kget(rt->rt_ifp, ifnet) == 0)
365 len = strlen(ifnet.if_xname);
366 else
367 len = strlen("---");
368 lastif = rt->rt_ifp;
369 wid_if = MAX(len, wid_if);
370 }
371 if (rt->rt_rmx.rmx_expire) {
372 time_t expire_time;
373
374 if ((expire_time =
375 rt->rt_rmx.rmx_expire - uptime.tv_sec) > 0) {
376 len = snprintf(buffer, sizeof(buffer), "%d",
377 (int)expire_time);
378 wid_expire = MAX(len, wid_expire);
379 }
380 }
381 }
382 }
383
384
385 /*
386 * Print header for routing table columns.
387 */
388 void
pr_rthdr(int af1)389 pr_rthdr(int af1)
390 {
391
392 if (Aflag)
393 printf("%-8.8s ","Address");
394 if (af1 == AF_INET || Wflag) {
395 if (Wflag) {
396 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*.*s %*s\n",
397 wid_dst, wid_dst, "Destination",
398 wid_gw, wid_gw, "Gateway",
399 wid_flags, wid_flags, "Flags",
400 wid_refs, wid_refs, "Refs",
401 wid_use, wid_use, "Use",
402 wid_mtu, wid_mtu, "Mtu",
403 wid_if, wid_if, "Netif",
404 wid_expire, "Expire");
405 } else {
406 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n",
407 wid_dst, wid_dst, "Destination",
408 wid_gw, wid_gw, "Gateway",
409 wid_flags, wid_flags, "Flags",
410 wid_refs, wid_refs, "Refs",
411 wid_use, wid_use, "Use",
412 wid_if, wid_if, "Netif",
413 wid_expire, "Expire");
414 }
415 } else {
416 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n",
417 wid_dst, wid_dst, "Destination",
418 wid_gw, wid_gw, "Gateway",
419 wid_flags, wid_flags, "Flags",
420 wid_if, wid_if, "Netif",
421 wid_expire, "Expire");
422 }
423 }
424
425 static struct sockaddr *
kgetsa(struct sockaddr * dst)426 kgetsa(struct sockaddr *dst)
427 {
428
429 if (kget(dst, pt_u.u_sa) != 0)
430 return (NULL);
431 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa))
432 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len);
433 return (&pt_u.u_sa);
434 }
435
436 static void
p_tree(struct radix_node * rn)437 p_tree(struct radix_node *rn)
438 {
439
440 again:
441 if (kget(rn, rnode) != 0)
442 return;
443 if (!(rnode.rn_flags & RNF_ACTIVE))
444 return;
445 if (rnode.rn_bit < 0) {
446 if (Aflag)
447 printf("%-8.8lx ", (u_long)rn);
448 if (rnode.rn_flags & RNF_ROOT) {
449 if (Aflag)
450 printf("(root node)%s",
451 rnode.rn_dupedkey ? " =>\n" : "\n");
452 } else if (do_rtent) {
453 if (kget(rn, rtentry) == 0) {
454 p_rtentry(&rtentry);
455 if (Aflag)
456 p_rtnode();
457 }
458 } else {
459 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key),
460 NULL, 0, 44);
461 putchar('\n');
462 }
463 if ((rn = rnode.rn_dupedkey))
464 goto again;
465 } else {
466 if (Aflag && do_rtent) {
467 printf("%-8.8lx ", (u_long)rn);
468 p_rtnode();
469 }
470 rn = rnode.rn_right;
471 p_tree(rnode.rn_left);
472 p_tree(rn);
473 }
474 }
475
476 char nbuf[20];
477
478 static void
p_rtnode(void)479 p_rtnode(void)
480 {
481 struct radix_mask *rm = rnode.rn_mklist;
482
483 if (rnode.rn_bit < 0) {
484 if (rnode.rn_mask) {
485 printf("\t mask ");
486 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask),
487 NULL, 0, -1);
488 } else if (rm == 0)
489 return;
490 } else {
491 sprintf(nbuf, "(%d)", rnode.rn_bit);
492 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right);
493 }
494 while (rm) {
495 if (kget(rm, rmask) != 0)
496 break;
497 sprintf(nbuf, " %d refs, ", rmask.rm_refs);
498 printf(" mk = %8.8lx {(%d),%s",
499 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " ");
500 if (rmask.rm_flags & RNF_NORMAL) {
501 struct radix_node rnode_aux;
502 printf(" <normal>, ");
503 if (kget(rmask.rm_leaf, rnode_aux) == 0)
504 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask),
505 NULL, 0, -1);
506 else
507 p_sockaddr(NULL, NULL, 0, -1);
508 } else
509 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask),
510 NULL, 0, -1);
511 putchar('}');
512 if ((rm = rmask.rm_mklist))
513 printf(" ->");
514 }
515 putchar('\n');
516 }
517
518 static void
ntreestuff(void)519 ntreestuff(void)
520 {
521 size_t needed;
522 int mib[6];
523 char *buf, *next, *lim;
524 struct rt_msghdr *rtm;
525
526 mib[0] = CTL_NET;
527 mib[1] = PF_ROUTE;
528 mib[2] = 0;
529 mib[3] = 0;
530 mib[4] = NET_RT_DUMP;
531 mib[5] = 0;
532 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) {
533 err(1, "sysctl: net.route.0.0.dump estimate");
534 }
535
536 if ((buf = malloc(needed)) == 0) {
537 errx(2, "malloc(%lu)", (unsigned long)needed);
538 }
539 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
540 err(1, "sysctl: net.route.0.0.dump");
541 }
542 lim = buf + needed;
543 for (next = buf; next < lim; next += rtm->rtm_msglen) {
544 rtm = (struct rt_msghdr *)next;
545 np_rtentry(rtm);
546 }
547 }
548
549 static void
np_rtentry(struct rt_msghdr * rtm)550 np_rtentry(struct rt_msghdr *rtm)
551 {
552 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
553 #ifdef notdef
554 static int masks_done, banner_printed;
555 #endif
556 static int old_af;
557 int af1 = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST;
558
559 #ifdef notdef
560 /* for the moment, netmasks are skipped over */
561 if (!banner_printed) {
562 printf("Netmasks:\n");
563 banner_printed = 1;
564 }
565 if (masks_done == 0) {
566 if (rtm->rtm_addrs != RTA_DST ) {
567 masks_done = 1;
568 af1 = sa->sa_family;
569 }
570 } else
571 #endif
572 af1 = sa->sa_family;
573 if (af1 != old_af) {
574 pr_family(af1);
575 old_af = af1;
576 }
577 if (rtm->rtm_addrs == RTA_DST)
578 p_sockaddr(sa, NULL, 0, 36);
579 else {
580 p_sockaddr(sa, NULL, rtm->rtm_flags, 16);
581 sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa);
582 p_sockaddr(sa, NULL, 0, 18);
583 }
584 p_flags(rtm->rtm_flags & interesting, "%-6.6s ");
585 putchar('\n');
586 }
587
588 static void
p_sockaddr(struct sockaddr * sa,struct sockaddr * mask,int flags,int width)589 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width)
590 {
591 const char *cp;
592
593 cp = fmt_sockaddr(sa, mask, flags);
594
595 if (width < 0 )
596 printf("%s ", cp);
597 else {
598 if (numeric_addr)
599 printf("%-*s ", width, cp);
600 else
601 printf("%-*.*s ", width, width, cp);
602 }
603 }
604
605 static const char *
fmt_sockaddr(struct sockaddr * sa,struct sockaddr * mask,int flags)606 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags)
607 {
608 static char workbuf[128];
609 const char *cp;
610
611 if (sa == NULL)
612 return ("null");
613
614 switch(sa->sa_family) {
615 case AF_INET:
616 {
617 struct sockaddr_in *sockin = (struct sockaddr_in *)sa;
618
619 if ((sockin->sin_addr.s_addr == INADDR_ANY) &&
620 mask &&
621 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr)
622 ==0L)
623 cp = "default" ;
624 else if (flags & RTF_HOST)
625 cp = routename(sockin->sin_addr.s_addr);
626 else if (mask)
627 cp = netname(sockin->sin_addr.s_addr,
628 ntohl(((struct sockaddr_in *)mask)
629 ->sin_addr.s_addr));
630 else
631 cp = netname(sockin->sin_addr.s_addr, 0L);
632 break;
633 }
634
635 #ifdef INET6
636 case AF_INET6:
637 {
638 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
639
640 in6_fillscopeid(sa6);
641
642 if (flags & RTF_HOST)
643 cp = routename6(sa6);
644 else if (mask)
645 cp = netname6(sa6,
646 &((struct sockaddr_in6 *)mask)->sin6_addr);
647 else {
648 cp = netname6(sa6, NULL);
649 }
650 break;
651 }
652 #endif /*INET6*/
653
654 case AF_IPX:
655 {
656 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr;
657 if (ipx_nullnet(satoipx_addr(work)))
658 cp = "default";
659 else
660 cp = ipx_print(sa);
661 break;
662 }
663 case AF_APPLETALK:
664 {
665 if (!(flags & RTF_HOST) && mask)
666 cp = atalk_print2(sa,mask,9);
667 else
668 cp = atalk_print(sa,11);
669 break;
670 }
671 case AF_NETGRAPH:
672 {
673 strlcpy(workbuf, ((struct sockaddr_ng *)sa)->sg_data,
674 sizeof(workbuf));
675 cp = workbuf;
676 break;
677 }
678
679 case AF_LINK:
680 {
681 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
682
683 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
684 sdl->sdl_slen == 0) {
685 (void) sprintf(workbuf, "link#%d", sdl->sdl_index);
686 cp = workbuf;
687 } else
688 switch (sdl->sdl_type) {
689
690 case IFT_ETHER:
691 case IFT_L2VLAN:
692 case IFT_BRIDGE:
693 if (sdl->sdl_alen == ETHER_ADDR_LEN) {
694 cp = ether_ntoa((struct ether_addr *)
695 (sdl->sdl_data + sdl->sdl_nlen));
696 break;
697 }
698 /* FALLTHROUGH */
699 default:
700 cp = link_ntoa(sdl);
701 break;
702 }
703 break;
704 }
705
706 default:
707 {
708 u_char *s = (u_char *)sa->sa_data, *slim;
709 char *cq, *cqlim;
710
711 cq = workbuf;
712 slim = sa->sa_len + (u_char *) sa;
713 cqlim = cq + sizeof(workbuf) - 6;
714 cq += sprintf(cq, "(%d)", sa->sa_family);
715 while (s < slim && cq < cqlim) {
716 cq += sprintf(cq, " %02x", *s++);
717 if (s < slim)
718 cq += sprintf(cq, "%02x", *s++);
719 }
720 cp = workbuf;
721 }
722 }
723
724 return (cp);
725 }
726
727 static void
p_flags(int f,const char * format)728 p_flags(int f, const char *format)
729 {
730 printf(format, fmt_flags(f));
731 }
732
733 static const char *
fmt_flags(int f)734 fmt_flags(int f)
735 {
736 static char name[33];
737 char *flags;
738 struct bits *p = bits;
739
740 for (flags = name; p->b_mask; p++)
741 if (p->b_mask & f)
742 *flags++ = p->b_val;
743 *flags = '\0';
744 return (name);
745 }
746
747 static void
p_rtentry(struct rtentry * rt)748 p_rtentry(struct rtentry *rt)
749 {
750 static struct ifnet ifnet, *lastif;
751 static char buffer[128];
752 static char prettyname[128];
753 struct sockaddr *sa;
754 sa_u addr, mask;
755
756 bzero(&addr, sizeof(addr));
757 if ((sa = kgetsa(rt_key(rt))))
758 bcopy(sa, &addr, sa->sa_len);
759 bzero(&mask, sizeof(mask));
760 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt))))
761 bcopy(sa, &mask, sa->sa_len);
762 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst);
763 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw);
764 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags);
765 p_flags(rt->rt_flags, buffer);
766 if (addr.u_sa.sa_family == AF_INET || Wflag) {
767 printf("%*d %*lu ", wid_refs, rt->rt_refcnt,
768 wid_use, rt->rt_use);
769 if (Wflag) {
770 if (rt->rt_rmx.rmx_mtu != 0)
771 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu);
772 else
773 printf("%*s ", wid_mtu, "");
774 }
775 }
776 if (rt->rt_ifp) {
777 if (rt->rt_ifp != lastif) {
778 if (kget(rt->rt_ifp, ifnet) == 0)
779 strlcpy(prettyname, ifnet.if_xname,
780 sizeof(prettyname));
781 else
782 strlcpy(prettyname, "---", sizeof(prettyname));
783 lastif = rt->rt_ifp;
784 }
785 printf("%*.*s", wid_if, wid_if, prettyname);
786 if (rt->rt_rmx.rmx_expire) {
787 time_t expire_time;
788
789 if ((expire_time =
790 rt->rt_rmx.rmx_expire - uptime.tv_sec) > 0)
791 printf(" %*d", wid_expire, (int)expire_time);
792 }
793 if (rt->rt_nodes[0].rn_dupedkey)
794 printf(" =>");
795 }
796 putchar('\n');
797 }
798
799 char *
routename(in_addr_t in)800 routename(in_addr_t in)
801 {
802 char *cp;
803 static char line[MAXHOSTNAMELEN];
804 struct hostent *hp;
805
806 cp = 0;
807 if (!numeric_addr) {
808 hp = gethostbyaddr(&in, sizeof (struct in_addr), AF_INET);
809 if (hp) {
810 cp = hp->h_name;
811 trimdomain(cp, strlen(cp));
812 }
813 }
814 if (cp) {
815 strlcpy(line, cp, sizeof(line));
816 } else {
817 #define C(x) ((x) & 0xff)
818 in = ntohl(in);
819 sprintf(line, "%u.%u.%u.%u",
820 C(in >> 24), C(in >> 16), C(in >> 8), C(in));
821 }
822 return (line);
823 }
824
825 #define NSHIFT(m) ( \
826 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \
827 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \
828 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \
829 0)
830
831 static void
domask(char * dst,in_addr_t addr __unused,u_long mask)832 domask(char *dst, in_addr_t addr __unused, u_long mask)
833 {
834 int b, i;
835
836 if (mask == 0 || (!numeric_addr && NSHIFT(mask) != 0)) {
837 *dst = '\0';
838 return;
839 }
840 i = 0;
841 for (b = 0; b < 32; b++)
842 if (mask & (1 << b)) {
843 int bb;
844
845 i = b;
846 for (bb = b+1; bb < 32; bb++)
847 if (!(mask & (1 << bb))) {
848 i = -1; /* noncontig */
849 break;
850 }
851 break;
852 }
853 if (i == -1)
854 sprintf(dst, "&0x%lx", mask);
855 else
856 sprintf(dst, "/%d", 32-i);
857 }
858
859 /*
860 * Return the name of the network whose address is given.
861 * The address is assumed to be that of a net or subnet, not a host.
862 */
863 char *
netname(in_addr_t in,u_long mask)864 netname(in_addr_t in, u_long mask)
865 {
866 char *cp = 0;
867 static char line[MAXHOSTNAMELEN];
868 struct netent *np = 0;
869 in_addr_t i;
870
871 i = ntohl(in);
872 if (!numeric_addr && i) {
873 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET);
874 if (np != NULL) {
875 cp = np->n_name;
876 trimdomain(cp, strlen(cp));
877 }
878 }
879 if (cp != NULL) {
880 strlcpy(line, cp, sizeof(line));
881 } else {
882 inet_ntop(AF_INET, &in, line, sizeof(line) - 1);
883 }
884 domask(line + strlen(line), i, mask);
885 return (line);
886 }
887
888 #undef NSHIFT
889
890 #ifdef INET6
891 void
in6_fillscopeid(struct sockaddr_in6 * sa6)892 in6_fillscopeid(struct sockaddr_in6 *sa6)
893 {
894 #if defined(__KAME__)
895 /*
896 * XXX: This is a special workaround for KAME kernels.
897 * sin6_scope_id field of SA should be set in the future.
898 */
899 if (IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr) ||
900 IN6_IS_ADDR_MC_NODELOCAL(&sa6->sin6_addr) ||
901 IN6_IS_ADDR_MC_LINKLOCAL(&sa6->sin6_addr)) {
902 /* XXX: override is ok? */
903 sa6->sin6_scope_id =
904 ntohs(*(u_int16_t *)&sa6->sin6_addr.s6_addr[2]);
905 sa6->sin6_addr.s6_addr[2] = sa6->sin6_addr.s6_addr[3] = 0;
906 }
907 #endif
908 }
909
910 const char *
netname6(struct sockaddr_in6 * sa6,struct in6_addr * mask)911 netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask)
912 {
913 static char line[MAXHOSTNAMELEN];
914 u_char *p = (u_char *)mask;
915 u_char *lim;
916 int masklen, illegal = 0, flag = 0;
917
918 if (mask) {
919 for (masklen = 0, lim = p + 16; p < lim; p++) {
920 switch (*p) {
921 case 0xff:
922 masklen += 8;
923 break;
924 case 0xfe:
925 masklen += 7;
926 break;
927 case 0xfc:
928 masklen += 6;
929 break;
930 case 0xf8:
931 masklen += 5;
932 break;
933 case 0xf0:
934 masklen += 4;
935 break;
936 case 0xe0:
937 masklen += 3;
938 break;
939 case 0xc0:
940 masklen += 2;
941 break;
942 case 0x80:
943 masklen += 1;
944 break;
945 case 0x00:
946 break;
947 default:
948 illegal ++;
949 break;
950 }
951 }
952 if (illegal)
953 fprintf(stderr, "illegal prefixlen\n");
954 }
955 else
956 masklen = 128;
957
958 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr))
959 return("default");
960
961 if (numeric_addr)
962 flag |= NI_NUMERICHOST;
963 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line),
964 NULL, 0, flag);
965
966 if (numeric_addr)
967 sprintf(&line[strlen(line)], "/%d", masklen);
968
969 return line;
970 }
971
972 char *
routename6(struct sockaddr_in6 * sa6)973 routename6(struct sockaddr_in6 *sa6)
974 {
975 static char line[MAXHOSTNAMELEN];
976 int flag = 0;
977 /* use local variable for safety */
978 struct sockaddr_in6 sa6_local;
979
980 sa6_local.sin6_family = AF_INET6;
981 sa6_local.sin6_len = sizeof(sa6_local);
982 sa6_local.sin6_addr = sa6->sin6_addr;
983 sa6_local.sin6_scope_id = sa6->sin6_scope_id;
984
985 if (numeric_addr)
986 flag |= NI_NUMERICHOST;
987
988 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len,
989 line, sizeof(line), NULL, 0, flag);
990
991 return line;
992 }
993 #endif /*INET6*/
994
995 /*
996 * Print routing statistics
997 */
998 void
rt_stats(u_long rtsaddr,u_long rttaddr)999 rt_stats(u_long rtsaddr, u_long rttaddr)
1000 {
1001 struct rtstat rtstat;
1002 int rttrash;
1003
1004 if (rtsaddr == 0) {
1005 printf("rtstat: symbol not in namelist\n");
1006 return;
1007 }
1008 if (rttaddr == 0) {
1009 printf("rttrash: symbol not in namelist\n");
1010 return;
1011 }
1012 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat));
1013 kread(rttaddr, (char *)&rttrash, sizeof (rttrash));
1014 printf("routing:\n");
1015
1016 #define p(f, m) if (rtstat.f || sflag <= 1) \
1017 printf(m, rtstat.f, plural(rtstat.f))
1018
1019 p(rts_badredirect, "\t%hu bad routing redirect%s\n");
1020 p(rts_dynamic, "\t%hu dynamically created route%s\n");
1021 p(rts_newgateway, "\t%hu new gateway%s due to redirects\n");
1022 p(rts_unreach, "\t%hu destination%s found unreachable\n");
1023 p(rts_wildcard, "\t%hu use%s of a wildcard route\n");
1024 #undef p
1025
1026 if (rttrash || sflag <= 1)
1027 printf("\t%u route%s not in table but not freed\n",
1028 rttrash, plural(rttrash));
1029 }
1030
1031 char *
ipx_print(struct sockaddr * sa)1032 ipx_print(struct sockaddr *sa)
1033 {
1034 u_short port;
1035 struct servent *sp = 0;
1036 const char *net = "", *host = "";
1037 char *p;
1038 u_char *q;
1039 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr;
1040 static char mybuf[50];
1041 char cport[10], chost[15], cnet[15];
1042
1043 port = ntohs(work.x_port);
1044
1045 if (ipx_nullnet(work) && ipx_nullhost(work)) {
1046
1047 if (port) {
1048 if (sp)
1049 sprintf(mybuf, "*.%s", sp->s_name);
1050 else
1051 sprintf(mybuf, "*.%x", port);
1052 } else
1053 sprintf(mybuf, "*.*");
1054
1055 return (mybuf);
1056 }
1057
1058 if (ipx_wildnet(work))
1059 net = "any";
1060 else if (ipx_nullnet(work))
1061 net = "*";
1062 else {
1063 q = work.x_net.c_net;
1064 sprintf(cnet, "%02x%02x%02x%02x",
1065 q[0], q[1], q[2], q[3]);
1066 for (p = cnet; *p == '0' && p < cnet + 8; p++)
1067 continue;
1068 net = p;
1069 }
1070
1071 if (ipx_wildhost(work))
1072 host = "any";
1073 else if (ipx_nullhost(work))
1074 host = "*";
1075 else {
1076 q = work.x_host.c_host;
1077 sprintf(chost, "%02x%02x%02x%02x%02x%02x",
1078 q[0], q[1], q[2], q[3], q[4], q[5]);
1079 for (p = chost; *p == '0' && p < chost + 12; p++)
1080 continue;
1081 host = p;
1082 }
1083
1084 if (port) {
1085 if (strcmp(host, "*") == 0)
1086 host = "";
1087 if (sp)
1088 snprintf(cport, sizeof(cport),
1089 "%s%s", *host ? "." : "", sp->s_name);
1090 else
1091 snprintf(cport, sizeof(cport),
1092 "%s%x", *host ? "." : "", port);
1093 } else
1094 *cport = 0;
1095
1096 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport);
1097 return(mybuf);
1098 }
1099
1100 char *
ipx_phost(struct sockaddr * sa)1101 ipx_phost(struct sockaddr *sa)
1102 {
1103 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa;
1104 struct sockaddr_ipx work;
1105 static union ipx_net ipx_zeronet;
1106 char *p;
1107
1108 work = *sipx;
1109
1110 work.sipx_addr.x_port = 0;
1111 work.sipx_addr.x_net = ipx_zeronet;
1112 p = ipx_print((struct sockaddr *)&work);
1113 if (strncmp("*.", p, 2) == 0) p += 2;
1114
1115 return(p);
1116 }
1117
1118 void
upHex(char * p0)1119 upHex(char *p0)
1120 {
1121 char *p = p0;
1122
1123 for (; *p; p++)
1124 switch (*p) {
1125
1126 case 'a':
1127 case 'b':
1128 case 'c':
1129 case 'd':
1130 case 'e':
1131 case 'f':
1132 *p += ('A' - 'a');
1133 break;
1134 }
1135 }
1136