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route.c @ 6da9b23

4.1155-freebsd-126-freebsd-12freebsd-9.3

Last change on this file since 6da9b23 was 6da9b23, checked in by Sebastian Huber <sebastian.huber@…>, on 10/30/13 at 14:42:53

NETSTAT(1): Initialize global variables

Use BSD program lock.

Property mode set to 100644

File size: 25.4 KB

Line
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	#if 0
35	#ifndef lint
36	static char sccsid[] = "From: @(#)route.c 8.6 (Berkeley) 4/28/95";
37	#endif /* not lint */
38	#endif
39
40	#include <sys/cdefs.h>
41	__FBSDID("$FreeBSD$");
42
43	#include <rtems/bsd/sys/param.h>
44	#include <sys/protosw.h>
45	#include <sys/socket.h>
46	#include <sys/socketvar.h>
47	#include <rtems/bsd/sys/time.h>
48
49	#include <net/ethernet.h>
50	#include <net/if.h>
51	#include <net/if_var.h>
52	#include <net/if_dl.h>
53	#include <net/if_types.h>
54	#include <net/radix.h>
55	#include <net/route.h>
56
57	#include <netinet/in.h>
58	#ifdef __rtems__
59	/* no IPX on RTEMS */
60	/* no AppleTalk on RTEMS */
61	#else /* __rtems__ */
62	#include <netipx/ipx.h>
63	#include <netatalk/at.h>
64	#endif /* __rtems__ */
65	#ifdef __rtems__
66	/* why isn't this protected by a NETGRAPH define */
67	#else /* __rtems__ */
68	#include <netgraph/ng_socket.h>
69	#endif /* __rtems__ */
70
71	#include <sys/sysctl.h>
72
73	#include <arpa/inet.h>
74	#include <libutil.h>
75	#include <netdb.h>
76	#include <stdint.h>
77	#include <stdio.h>
78	#include <stdlib.h>
79	#include <string.h>
80	#include <sysexits.h>
81	#include <unistd.h>
82	#include <err.h>
83	#include "netstat.h"
84
85	#define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d)))
86
87	/*
88	* Definitions for showing gateway flags.
89	*/
90	struct bits {
91	u_long b_mask;
92	char b_val;
93	} static const bits[] = {
94	{ RTF_UP, 'U' },
95	{ RTF_GATEWAY, 'G' },
96	{ RTF_HOST, 'H' },
97	{ RTF_REJECT, 'R' },
98	{ RTF_DYNAMIC, 'D' },
99	{ RTF_MODIFIED, 'M' },
100	{ RTF_DONE, 'd' }, /* Completed -- for routing messages only */
101	{ RTF_XRESOLVE, 'X' },
102	{ RTF_STATIC, 'S' },
103	{ RTF_PROTO1, '1' },
104	{ RTF_PROTO2, '2' },
105	{ RTF_PRCLONING,'c' },
106	{ RTF_PROTO3, '3' },
107	{ RTF_BLACKHOLE,'B' },
108	{ RTF_BROADCAST,'b' },
109	#ifdef RTF_LLINFO
110	{ RTF_LLINFO, 'L' },
111	#endif
112	#ifdef RTF_WASCLONED
113	{ RTF_WASCLONED,'W' },
114	#endif
115	#ifdef RTF_CLONING
116	{ RTF_CLONING, 'C' },
117	#endif
118	{ 0 , 0 }
119	};
120
121	typedef union {
122	long dummy; /* Helps align structure. */
123	struct sockaddr u_sa;
124	u_short u_data[128];
125	} sa_u;
126
127	static sa_u pt_u;
128
129	static int fibnum;
130	static struct rtentry rtentry;
131	static struct radix_node rnode;
132	static struct radix_mask rmask;
133
134	static const int NewTree = 0;
135
136	static struct timespec uptime;
137
138	static struct sockaddr kgetsa(struct sockaddr );
139	static void size_cols(int ef, struct radix_node *rn);
140	static void size_cols_tree(struct radix_node *rn);
141	static void size_cols_rtentry(struct rtentry *rt);
142	static void p_tree(struct radix_node *);
143	static void p_rtnode(void);
144	static void ntreestuff(void);
145	static void np_rtentry(struct rt_msghdr *);
146	static void p_sockaddr(struct sockaddr , struct sockaddr , int, int);
147	static const char fmt_sockaddr(struct sockaddr sa, struct sockaddr *mask,
148	int flags);
149	static void p_flags(int, const char *);
150	static const char *fmt_flags(int f);
151	static void p_rtentry(struct rtentry *);
152	static void domask(char *, in_addr_t, u_long);
153
154	/*
155	* Print routing tables.
156	*/
157	void
158	routepr(u_long rtree)
159	{
160	struct radix_node_head *rnhp, rnh, head;
161	size_t intsize;
162	int i;
163	int numfibs;
164
165	intsize = sizeof(int);
166	if (sysctlbyname("net.my_fibnum", &fibnum, &intsize, NULL, 0) == -1)
167	fibnum = 0;
168	if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1)
169	numfibs = 1;
170	rt_tables = calloc(numfibs * (AF_MAX+1),
171	sizeof(struct radix_node_head *));
172	if (rt_tables == NULL)
173	err(EX_OSERR, "memory allocation failed");
174	/*
175	* Since kernel & userland use different timebase
176	* (time_uptime vs time_second) and we are reading kernel memory
177	* directly we should do rt_rmx.rmx_expire --> expire_time conversion.
178	*/
179	#ifdef __rtems__
180	{
181	rtems_clock_get_uptime(&uptime);
182	}
183	#else
184	if (clock_gettime(CLOCK_UPTIME, &uptime) < 0)
185	err(EX_OSERR, "clock_gettime() failed");
186	#endif
187
188	printf("Routing tables\n");
189
190	if (Aflag == 0 && NewTree)
191	ntreestuff();
192	else {
193	if (rtree == 0) {
194	printf("rt_tables: symbol not in namelist\n");
195	return;
196	}
197
198	if (kread((u_long)(rtree), (char )(rt_tables), (numfibs
199	(AF_MAX+1) * sizeof(struct radix_node_head *))) != 0)
200	return;
201	for (i = 0; i <= AF_MAX; i++) {
202	int tmpfib;
203	if (i != AF_INET)
204	tmpfib = 0;
205	else
206	tmpfib = fibnum;
207	rnhp = (struct radix_node_head *)rt_tables;
208	/* Calculate the in-kernel address. */
209	rnhp += tmpfib * (AF_MAX+1) + i;
210	/* Read the in kernel rhn pointer. */
211	if (kget(rnhp, rnh) != 0)
212	continue;
213	if (rnh == NULL)
214	continue;
215	#ifdef __rtems__
216	/* printf( "rnh %p %p\n", (void )rnhp, (void )rnh ); */
217	/* We get a 1 here on some fields. Why? XXX */
218	#endif
219	/* Read the rnh data. */
220	if (kget(rnh, head) != 0)
221	continue;
222	if (i == AF_UNSPEC) {
223	if (Aflag && af == 0) {
224	printf("Netmasks:\n");
225	p_tree(head.rnh_treetop);
226	}
227	} else if (af == AF_UNSPEC \|\| af == i) {
228	size_cols(i, head.rnh_treetop);
229	pr_family(i);
230	do_rtent = 1;
231	pr_rthdr(i);
232	p_tree(head.rnh_treetop);
233	}
234	}
235	}
236	}
237
238	/*
239	* Print address family header before a section of the routing table.
240	*/
241	void
242	pr_family(int af1)
243	{
244	const char *afname;
245
246	switch (af1) {
247	case AF_INET:
248	afname = "Internet";
249	break;
250	#ifdef INET6
251	case AF_INET6:
252	afname = "Internet6";
253	break;
254	#endif /INET6/
255	case AF_IPX:
256	afname = "IPX";
257	break;
258	case AF_ISO:
259	afname = "ISO";
260	break;
261	case AF_APPLETALK:
262	afname = "AppleTalk";
263	break;
264	case AF_CCITT:
265	afname = "X.25";
266	break;
267	case AF_NETGRAPH:
268	afname = "Netgraph";
269	break;
270	default:
271	afname = NULL;
272	break;
273	}
274	if (afname)
275	printf("\n%s:\n", afname);
276	else
277	printf("\nProtocol Family %d:\n", af1);
278	}
279
280	/* column widths; each followed by one space */
281	#ifndef INET6
282	#define WID_DST_DEFAULT(af) 18 /* width of destination column */
283	#define WID_GW_DEFAULT(af) 18 /* width of gateway column */
284	#define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */
285	#else
286	#define WID_DST_DEFAULT(af) \
287	((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18)
288	#define WID_GW_DEFAULT(af) \
289	((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18)
290	#define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 : 6))
291	#endif /INET6/
292
293	static int wid_dst;
294	static int wid_gw;
295	static int wid_flags;
296	static int wid_refs;
297	static int wid_use;
298	static int wid_mtu;
299	static int wid_if;
300	static int wid_expire;
301
302	static void
303	size_cols(int ef __unused, struct radix_node *rn)
304	{
305	wid_dst = WID_DST_DEFAULT(ef);
306	wid_gw = WID_GW_DEFAULT(ef);
307	wid_flags = 6;
308	wid_refs = 6;
309	wid_use = 8;
310	wid_mtu = 6;
311	wid_if = WID_IF_DEFAULT(ef);
312	wid_expire = 6;
313
314	if (Wflag)
315	size_cols_tree(rn);
316	}
317
318	static void
319	size_cols_tree(struct radix_node *rn)
320	{
321	again:
322	if (kget(rn, rnode) != 0)
323	return;
324	if (!(rnode.rn_flags & RNF_ACTIVE))
325	return;
326	if (rnode.rn_bit < 0) {
327	if ((rnode.rn_flags & RNF_ROOT) == 0) {
328	if (kget(rn, rtentry) != 0)
329	return;
330	size_cols_rtentry(&rtentry);
331	}
332	if ((rn = rnode.rn_dupedkey))
333	goto again;
334	} else {
335	rn = rnode.rn_right;
336	size_cols_tree(rnode.rn_left);
337	size_cols_tree(rn);
338	}
339	}
340
341	static void
342	size_cols_rtentry(struct rtentry *rt)
343	{
344	static struct ifnet ifnet, *lastif;
345	static char buffer[100];
346	const char *bp;
347	struct sockaddr *sa;
348	sa_u addr, mask;
349	int len;
350
351	bzero(&addr, sizeof(addr));
352	if ((sa = kgetsa(rt_key(rt))))
353	bcopy(sa, &addr, sa->sa_len);
354	bzero(&mask, sizeof(mask));
355	if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt))))
356	bcopy(sa, &mask, sa->sa_len);
357	bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags);
358	len = strlen(bp);
359	wid_dst = MAX(len, wid_dst);
360
361	bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST);
362	len = strlen(bp);
363	wid_gw = MAX(len, wid_gw);
364
365	bp = fmt_flags(rt->rt_flags);
366	len = strlen(bp);
367	wid_flags = MAX(len, wid_flags);
368
369	if (addr.u_sa.sa_family == AF_INET \|\| Wflag) {
370	len = snprintf(buffer, sizeof(buffer), "%d", rt->rt_refcnt);
371	wid_refs = MAX(len, wid_refs);
372	len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use);
373	wid_use = MAX(len, wid_use);
374	if (Wflag && rt->rt_rmx.rmx_mtu != 0) {
375	len = snprintf(buffer, sizeof(buffer),
376	"%lu", rt->rt_rmx.rmx_mtu);
377	wid_mtu = MAX(len, wid_mtu);
378	}
379	}
380	if (rt->rt_ifp) {
381	if (rt->rt_ifp != lastif) {
382	if (kget(rt->rt_ifp, ifnet) == 0)
383	len = strlen(ifnet.if_xname);
384	else
385	len = strlen("---");
386	lastif = rt->rt_ifp;
387	wid_if = MAX(len, wid_if);
388	}
389	if (rt->rt_rmx.rmx_expire) {
390	time_t expire_time;
391
392	if ((expire_time =
393	rt->rt_rmx.rmx_expire - uptime.tv_sec) > 0) {
394	len = snprintf(buffer, sizeof(buffer), "%d",
395	(int)expire_time);
396	wid_expire = MAX(len, wid_expire);
397	}
398	}
399	}
400	}
401
402
403	/*
404	* Print header for routing table columns.
405	*/
406	void
407	pr_rthdr(int af1)
408	{
409
410	if (Aflag)
411	printf("%-8.8s ","Address");
412	if (af1 == AF_INET \|\| Wflag) {
413	if (Wflag) {
414	printf("%-.s %-.s %-.s %.s %.s %.s %.s %*s\n",
415	wid_dst, wid_dst, "Destination",
416	wid_gw, wid_gw, "Gateway",
417	wid_flags, wid_flags, "Flags",
418	wid_refs, wid_refs, "Refs",
419	wid_use, wid_use, "Use",
420	wid_mtu, wid_mtu, "Mtu",
421	wid_if, wid_if, "Netif",
422	wid_expire, "Expire");
423	} else {
424	printf("%-.s %-.s %-.s %.s %.s %.s %*s\n",
425	wid_dst, wid_dst, "Destination",
426	wid_gw, wid_gw, "Gateway",
427	wid_flags, wid_flags, "Flags",
428	wid_refs, wid_refs, "Refs",
429	wid_use, wid_use, "Use",
430	wid_if, wid_if, "Netif",
431	wid_expire, "Expire");
432	}
433	} else {
434	printf("%-.s %-.s %-.s %.s %*s\n",
435	wid_dst, wid_dst, "Destination",
436	wid_gw, wid_gw, "Gateway",
437	wid_flags, wid_flags, "Flags",
438	wid_if, wid_if, "Netif",
439	wid_expire, "Expire");
440	}
441	}
442
443	static struct sockaddr *
444	kgetsa(struct sockaddr *dst)
445	{
446
447	if (kget(dst, pt_u.u_sa) != 0)
448	return (NULL);
449	if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa))
450	kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len);
451	return (&pt_u.u_sa);
452	}
453
454	static void
455	p_tree(struct radix_node *rn)
456	{
457
458	again:
459	if (kget(rn, rnode) != 0)
460	return;
461	if (!(rnode.rn_flags & RNF_ACTIVE))
462	return;
463	if (rnode.rn_bit < 0) {
464	if (Aflag)
465	printf("%-8.8lx ", (u_long)rn);
466	if (rnode.rn_flags & RNF_ROOT) {
467	if (Aflag)
468	printf("(root node)%s",
469	rnode.rn_dupedkey ? " =>\n" : "\n");
470	} else if (do_rtent) {
471	if (kget(rn, rtentry) == 0) {
472	p_rtentry(&rtentry);
473	if (Aflag)
474	p_rtnode();
475	}
476	} else {
477	p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key),
478	NULL, 0, 44);
479	putchar('\n');
480	}
481	if ((rn = rnode.rn_dupedkey))
482	goto again;
483	} else {
484	if (Aflag && do_rtent) {
485	printf("%-8.8lx ", (u_long)rn);
486	p_rtnode();
487	}
488	rn = rnode.rn_right;
489	p_tree(rnode.rn_left);
490	p_tree(rn);
491	}
492	}
493
494	static char nbuf[20];
495
496	static void
497	p_rtnode(void)
498	{
499	struct radix_mask *rm = rnode.rn_mklist;
500
501	if (rnode.rn_bit < 0) {
502	if (rnode.rn_mask) {
503	printf("\t mask ");
504	p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask),
505	NULL, 0, -1);
506	} else if (rm == 0)
507	return;
508	} else {
509	sprintf(nbuf, "(%d)", rnode.rn_bit);
510	printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right);
511	}
512	while (rm) {
513	if (kget(rm, rmask) != 0)
514	break;
515	sprintf(nbuf, " %d refs, ", rmask.rm_refs);
516	printf(" mk = %8.8lx {(%d),%s",
517	(u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " ");
518	if (rmask.rm_flags & RNF_NORMAL) {
519	struct radix_node rnode_aux;
520	printf(" <normal>, ");
521	if (kget(rmask.rm_leaf, rnode_aux) == 0)
522	p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask),
523	NULL, 0, -1);
524	else
525	p_sockaddr(NULL, NULL, 0, -1);
526	} else
527	p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask),
528	NULL, 0, -1);
529	putchar('}');
530	if ((rm = rmask.rm_mklist))
531	printf(" ->");
532	}
533	putchar('\n');
534	}
535
536	static void
537	ntreestuff(void)
538	{
539	size_t needed;
540	int mib[6];
541	char buf, next, *lim;
542	struct rt_msghdr *rtm;
543
544	mib[0] = CTL_NET;
545	mib[1] = PF_ROUTE;
546	mib[2] = 0;
547	mib[3] = 0;
548	mib[4] = NET_RT_DUMP;
549	mib[5] = 0;
550	if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) {
551	err(1, "sysctl: net.route.0.0.dump estimate");
552	}
553
554	if ((buf = malloc(needed)) == 0) {
555	errx(2, "malloc(%lu)", (unsigned long)needed);
556	}
557	if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
558	err(1, "sysctl: net.route.0.0.dump");
559	}
560	lim = buf + needed;
561	for (next = buf; next < lim; next += rtm->rtm_msglen) {
562	rtm = (struct rt_msghdr *)next;
563	np_rtentry(rtm);
564	}
565	}
566
567	static void
568	np_rtentry(struct rt_msghdr *rtm)
569	{
570	struct sockaddr sa = (struct sockaddr )(rtm + 1);
571	#ifdef notdef
572	static int masks_done, banner_printed;
573	#endif
574	static int old_af;
575	int af1 = 0, interesting = RTF_UP \| RTF_GATEWAY \| RTF_HOST;
576
577	#ifdef notdef
578	/* for the moment, netmasks are skipped over */
579	if (!banner_printed) {
580	printf("Netmasks:\n");
581	banner_printed = 1;
582	}
583	if (masks_done == 0) {
584	if (rtm->rtm_addrs != RTA_DST ) {
585	masks_done = 1;
586	af1 = sa->sa_family;
587	}
588	} else
589	#endif
590	af1 = sa->sa_family;
591	if (af1 != old_af) {
592	pr_family(af1);
593	old_af = af1;
594	}
595	if (rtm->rtm_addrs == RTA_DST)
596	p_sockaddr(sa, NULL, 0, 36);
597	else {
598	p_sockaddr(sa, NULL, rtm->rtm_flags, 16);
599	sa = (struct sockaddr )(SA_SIZE(sa) + (char )sa);
600	p_sockaddr(sa, NULL, 0, 18);
601	}
602	p_flags(rtm->rtm_flags & interesting, "%-6.6s ");
603	putchar('\n');
604	}
605
606	static void
607	p_sockaddr(struct sockaddr sa, struct sockaddr mask, int flags, int width)
608	{
609	const char *cp;
610
611	cp = fmt_sockaddr(sa, mask, flags);
612
613	if (width < 0 )
614	printf("%s ", cp);
615	else {
616	if (numeric_addr)
617	printf("%-*s ", width, cp);
618	else
619	printf("%-.s ", width, width, cp);
620	}
621	}
622
623	static const char *
624	fmt_sockaddr(struct sockaddr sa, struct sockaddr mask, int flags)
625	{
626	static char workbuf[128];
627	const char *cp;
628
629	if (sa == NULL)
630	return ("null");
631
632	switch(sa->sa_family) {
633	case AF_INET:
634	{
635	struct sockaddr_in sockin = (struct sockaddr_in )sa;
636
637	if ((sockin->sin_addr.s_addr == INADDR_ANY) &&
638	mask &&
639	ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr)
640	==0L)
641	cp = "default" ;
642	else if (flags & RTF_HOST)
643	cp = routename(sockin->sin_addr.s_addr);
644	else if (mask)
645	cp = netname(sockin->sin_addr.s_addr,
646	ntohl(((struct sockaddr_in *)mask)
647	->sin_addr.s_addr));
648	else
649	cp = netname(sockin->sin_addr.s_addr, 0L);
650	break;
651	}
652
653	#ifdef INET6
654	case AF_INET6:
655	{
656	struct sockaddr_in6 sa6 = (struct sockaddr_in6 )sa;
657	struct in6_addr *in6 = &sa6->sin6_addr;
658
659	/*
660	* XXX: This is a special workaround for KAME kernels.
661	* sin6_scope_id field of SA should be set in the future.
662	*/
663	if (IN6_IS_ADDR_LINKLOCAL(in6) \|\|
664	IN6_IS_ADDR_MC_LINKLOCAL(in6)) {
665	/* XXX: override is ok? */
666	sa6->sin6_scope_id = (u_int32_t)ntohs((u_short )&in6->s6_addr[2]);
667	(u_short )&in6->s6_addr[2] = 0;
668	}
669
670	if (flags & RTF_HOST)
671	cp = routename6(sa6);
672	else if (mask)
673	cp = netname6(sa6,
674	&((struct sockaddr_in6 *)mask)->sin6_addr);
675	else {
676	cp = netname6(sa6, NULL);
677	}
678	break;
679	}
680	#endif /INET6/
681
682	#ifndef __rtems__
683	case AF_IPX:
684	{
685	struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr;
686	if (ipx_nullnet(satoipx_addr(work)))
687	cp = "default";
688	else
689	cp = ipx_print(sa);
690	break;
691	}
692	case AF_APPLETALK:
693	{
694	if (!(flags & RTF_HOST) && mask)
695	cp = atalk_print2(sa,mask,9);
696	else
697	cp = atalk_print(sa,11);
698	break;
699	}
700	#endif
701	case AF_NETGRAPH:
702	{
703	#ifdef __rtems__
704	/* netgraph not supported yet */
705	err(EX_OSERR, "memory allocation failed");
706	#else
707	strlcpy(workbuf, ((struct sockaddr_ng *)sa)->sg_data,
708	sizeof(workbuf));
709	cp = workbuf;
710	#endif
711	break;
712	}
713
714	case AF_LINK:
715	{
716	struct sockaddr_dl sdl = (struct sockaddr_dl )sa;
717
718	if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
719	sdl->sdl_slen == 0) {
720	(void) sprintf(workbuf, "link#%d", sdl->sdl_index);
721	cp = workbuf;
722	} else
723	switch (sdl->sdl_type) {
724
725	case IFT_ETHER:
726	case IFT_L2VLAN:
727	case IFT_BRIDGE:
728	if (sdl->sdl_alen == ETHER_ADDR_LEN) {
729	cp = ether_ntoa((struct ether_addr *)
730	(sdl->sdl_data + sdl->sdl_nlen));
731	break;
732	}
733	/* FALLTHROUGH */
734	default:
735	cp = link_ntoa(sdl);
736	break;
737	}
738	break;
739	}
740
741	default:
742	{
743	u_char s = (u_char )sa->sa_data, *slim;
744	char cq, cqlim;
745
746	cq = workbuf;
747	slim = sa->sa_len + (u_char *) sa;
748	cqlim = cq + sizeof(workbuf) - 6;
749	cq += sprintf(cq, "(%d)", sa->sa_family);
750	while (s < slim && cq < cqlim) {
751	cq += sprintf(cq, " %02x", *s++);
752	if (s < slim)
753	cq += sprintf(cq, "%02x", *s++);
754	}
755	cp = workbuf;
756	}
757	}
758
759	return (cp);
760	}
761
762	static void
763	p_flags(int f, const char *format)
764	{
765	printf(format, fmt_flags(f));
766	}
767
768	static const char *
769	fmt_flags(int f)
770	{
771	static char name[33];
772	char *flags;
773	const struct bits *p = bits;
774
775	for (flags = name; p->b_mask; p++)
776	if (p->b_mask & f)
777	*flags++ = p->b_val;
778	*flags = '\0';
779	return (name);
780	}
781
782	static void
783	p_rtentry(struct rtentry *rt)
784	{
785	static struct ifnet ifnet, *lastif;
786	static char buffer[128];
787	static char prettyname[128];
788	struct sockaddr *sa;
789	sa_u addr, mask;
790
791	bzero(&addr, sizeof(addr));
792	if ((sa = kgetsa(rt_key(rt))))
793	bcopy(sa, &addr, sa->sa_len);
794	bzero(&mask, sizeof(mask));
795	if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt))))
796	bcopy(sa, &mask, sa->sa_len);
797	p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst);
798	p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw);
799	snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags);
800	p_flags(rt->rt_flags, buffer);
801	if (addr.u_sa.sa_family == AF_INET \|\| Wflag) {
802	printf("%d %lu ", wid_refs, rt->rt_refcnt,
803	wid_use, rt->rt_use);
804	if (Wflag) {
805	if (rt->rt_rmx.rmx_mtu != 0)
806	printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu);
807	else
808	printf("%*s ", wid_mtu, "");
809	}
810	}
811	if (rt->rt_ifp) {
812	if (rt->rt_ifp != lastif) {
813	if (kget(rt->rt_ifp, ifnet) == 0)
814	strlcpy(prettyname, ifnet.if_xname,
815	sizeof(prettyname));
816	else
817	strlcpy(prettyname, "---", sizeof(prettyname));
818	lastif = rt->rt_ifp;
819	}
820	printf("%.s", wid_if, wid_if, prettyname);
821	if (rt->rt_rmx.rmx_expire) {
822	time_t expire_time;
823
824	if ((expire_time =
825	rt->rt_rmx.rmx_expire - uptime.tv_sec) > 0)
826	printf(" %*d", wid_expire, (int)expire_time);
827	}
828	if (rt->rt_nodes[0].rn_dupedkey)
829	printf(" =>");
830	}
831	putchar('\n');
832	}
833
834	char *
835	routename(in_addr_t in)
836	{
837	char *cp;
838	static char line[MAXHOSTNAMELEN];
839	struct hostent *hp;
840
841	cp = 0;
842	if (!numeric_addr) {
843	hp = gethostbyaddr(&in, sizeof (struct in_addr), AF_INET);
844	if (hp) {
845	cp = hp->h_name;
846	trimdomain(cp, strlen(cp));
847	}
848	}
849	if (cp) {
850	strlcpy(line, cp, sizeof(line));
851	} else {
852	#define C(x) ((x) & 0xff)
853	in = ntohl(in);
854	sprintf(line, "%u.%u.%u.%u",
855	C(in >> 24), C(in >> 16), C(in >> 8), C(in));
856	}
857	return (line);
858	}
859
860	#define NSHIFT(m) ( \
861	(m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \
862	(m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \
863	(m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \
864	0)
865
866	static void
867	domask(char *dst, in_addr_t addr __unused, u_long mask)
868	{
869	int b, i;
870
871	if (mask == 0 \|\| (!numeric_addr && NSHIFT(mask) != 0)) {
872	*dst = '\0';
873	return;
874	}
875	i = 0;
876	for (b = 0; b < 32; b++)
877	if (mask & (1 << b)) {
878	int bb;
879
880	i = b;
881	for (bb = b+1; bb < 32; bb++)
882	if (!(mask & (1 << bb))) {
883	i = -1; /* noncontig */
884	break;
885	}
886	break;
887	}
888	if (i == -1)
889	sprintf(dst, "&0x%lx", mask);
890	else
891	sprintf(dst, "/%d", 32-i);
892	}
893
894	/*
895	* Return the name of the network whose address is given.
896	* The address is assumed to be that of a net or subnet, not a host.
897	*/
898	char *
899	netname(in_addr_t in, u_long mask)
900	{
901	char *cp = 0;
902	static char line[MAXHOSTNAMELEN];
903	struct netent *np = 0;
904	in_addr_t i;
905
906	i = ntohl(in);
907	if (!numeric_addr && i) {
908	np = getnetbyaddr(i >> NSHIFT(mask), AF_INET);
909	if (np != NULL) {
910	cp = np->n_name;
911	trimdomain(cp, strlen(cp));
912	}
913	}
914	if (cp != NULL) {
915	strlcpy(line, cp, sizeof(line));
916	} else {
917	inet_ntop(AF_INET, &in, line, sizeof(line) - 1);
918	}
919	domask(line + strlen(line), i, mask);
920	return (line);
921	}
922
923	#undef NSHIFT
924
925	#ifdef INET6
926	const char *
927	netname6(struct sockaddr_in6 sa6, struct in6_addr mask)
928	{
929	static char line[MAXHOSTNAMELEN];
930	u_char p = (u_char )mask;
931	u_char *lim;
932	int masklen, illegal = 0, flag = 0;
933
934	if (mask) {
935	for (masklen = 0, lim = p + 16; p < lim; p++) {
936	switch (*p) {
937	case 0xff:
938	masklen += 8;
939	break;
940	case 0xfe:
941	masklen += 7;
942	break;
943	case 0xfc:
944	masklen += 6;
945	break;
946	case 0xf8:
947	masklen += 5;
948	break;
949	case 0xf0:
950	masklen += 4;
951	break;
952	case 0xe0:
953	masklen += 3;
954	break;
955	case 0xc0:
956	masklen += 2;
957	break;
958	case 0x80:
959	masklen += 1;
960	break;
961	case 0x00:
962	break;
963	default:
964	illegal ++;
965	break;
966	}
967	}
968	if (illegal)
969	fprintf(stderr, "illegal prefixlen\n");
970	}
971	else
972	masklen = 128;
973
974	if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr))
975	return("default");
976
977	if (numeric_addr)
978	flag \|= NI_NUMERICHOST;
979	getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line),
980	NULL, 0, flag);
981
982	if (numeric_addr)
983	sprintf(&line[strlen(line)], "/%d", masklen);
984
985	return line;
986	}
987
988	char *
989	routename6(struct sockaddr_in6 *sa6)
990	{
991	static char line[MAXHOSTNAMELEN];
992	int flag = 0;
993	/* use local variable for safety */
994	struct sockaddr_in6 sa6_local;
995
996	sa6_local.sin6_family = AF_INET6;
997	sa6_local.sin6_len = sizeof(sa6_local);
998	sa6_local.sin6_addr = sa6->sin6_addr;
999	sa6_local.sin6_scope_id = sa6->sin6_scope_id;
1000
1001	if (numeric_addr)
1002	flag \|= NI_NUMERICHOST;
1003
1004	getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len,
1005	line, sizeof(line), NULL, 0, flag);
1006
1007	return line;
1008	}
1009	#endif /INET6/
1010
1011	/*
1012	* Print routing statistics
1013	*/
1014	void
1015	rt_stats(u_long rtsaddr, u_long rttaddr)
1016	{
1017	struct rtstat rtstat;
1018	int rttrash;
1019
1020	if (rtsaddr == 0) {
1021	printf("rtstat: symbol not in namelist\n");
1022	return;
1023	}
1024	if (rttaddr == 0) {
1025	printf("rttrash: symbol not in namelist\n");
1026	return;
1027	}
1028	kread(rtsaddr, (char *)&rtstat, sizeof (rtstat));
1029	kread(rttaddr, (char *)&rttrash, sizeof (rttrash));
1030	printf("routing:\n");
1031
1032	#define p(f, m) if (rtstat.f \|\| sflag <= 1) \
1033	printf(m, rtstat.f, plural(rtstat.f))
1034
1035	p(rts_badredirect, "\t%hu bad routing redirect%s\n");
1036	p(rts_dynamic, "\t%hu dynamically created route%s\n");
1037	p(rts_newgateway, "\t%hu new gateway%s due to redirects\n");
1038	p(rts_unreach, "\t%hu destination%s found unreachable\n");
1039	p(rts_wildcard, "\t%hu use%s of a wildcard route\n");
1040	#undef p
1041
1042	if (rttrash \|\| sflag <= 1)
1043	printf("\t%u route%s not in table but not freed\n",
1044	rttrash, plural(rttrash));
1045	}
1046
1047	#ifndef __rtems__
1048	char *
1049	ipx_print(struct sockaddr *sa)
1050	{
1051	u_short port;
1052	struct servent *sp = 0;
1053	const char net = "", host = "";
1054	char *p;
1055	u_char *q;
1056	struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr;
1057	static char mybuf[50];
1058	char cport[10], chost[15], cnet[15];
1059
1060	port = ntohs(work.x_port);
1061
1062	if (ipx_nullnet(work) && ipx_nullhost(work)) {
1063
1064	if (port) {
1065	if (sp)
1066	sprintf(mybuf, "*.%s", sp->s_name);
1067	else
1068	sprintf(mybuf, "*.%x", port);
1069	} else
1070	sprintf(mybuf, ".");
1071
1072	return (mybuf);
1073	}
1074
1075	if (ipx_wildnet(work))
1076	net = "any";
1077	else if (ipx_nullnet(work))
1078	net = "*";
1079	else {
1080	q = work.x_net.c_net;
1081	sprintf(cnet, "%02x%02x%02x%02x",
1082	q[0], q[1], q[2], q[3]);
1083	for (p = cnet; *p == '0' && p < cnet + 8; p++)
1084	continue;
1085	net = p;
1086	}
1087
1088	if (ipx_wildhost(work))
1089	host = "any";
1090	else if (ipx_nullhost(work))
1091	host = "*";
1092	else {
1093	q = work.x_host.c_host;
1094	sprintf(chost, "%02x%02x%02x%02x%02x%02x",
1095	q[0], q[1], q[2], q[3], q[4], q[5]);
1096	for (p = chost; *p == '0' && p < chost + 12; p++)
1097	continue;
1098	host = p;
1099	}
1100
1101	if (port) {
1102	if (strcmp(host, "*") == 0)
1103	host = "";
1104	if (sp)
1105	snprintf(cport, sizeof(cport),
1106	"%s%s", *host ? "." : "", sp->s_name);
1107	else
1108	snprintf(cport, sizeof(cport),
1109	"%s%x", *host ? "." : "", port);
1110	} else
1111	*cport = 0;
1112
1113	snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport);
1114	return(mybuf);
1115	}
1116
1117	char *
1118	ipx_phost(struct sockaddr *sa)
1119	{
1120	struct sockaddr_ipx sipx = (struct sockaddr_ipx )sa;
1121	struct sockaddr_ipx work;
1122	static union ipx_net ipx_zeronet;
1123	char *p;
1124	struct ipx_addr in;
1125
1126	work = *sipx;
1127	in = work.sipx_addr;
1128
1129	work.sipx_addr.x_port = 0;
1130	work.sipx_addr.x_net = ipx_zeronet;
1131	p = ipx_print((struct sockaddr *)&work);
1132	if (strncmp("*.", p, 2) == 0) p += 2;
1133
1134	return(p);
1135	}
1136	#endif
1137
1138	void
1139	upHex(char *p0)
1140	{
1141	char *p = p0;
1142
1143	for (; *p; p++)
1144	switch (*p) {
1145
1146	case 'a':
1147	case 'b':
1148	case 'c':
1149	case 'd':
1150	case 'e':
1151	case 'f':
1152	*p += ('A' - 'a');
1153	break;
1154	}
1155	}

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source: rtems-libbsd/freebsd/usr.bin/netstat/route.c @ 6da9b23

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