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route.c @ f1710b6

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

Last change on this file since f1710b6 was f1710b6, checked in by Joel Sherrill <joel.sherrill@…>, on 09/07/12 at 17:50:18

netstat: New command - Almost completely compiles

Currently disable in Makefile until all builds. Adding it so
others can assist in debugging issues.

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 <sys/param.h>
44	#ifdef __rtems__
45	#include <freebsd/sys/protosw.h>
46	#else
47	#include <sys/protosw.h>
48	#endif
49	#include <sys/socket.h>
50	#include <sys/socketvar.h>
51	#include <sys/time.h>
52
53	#include <net/ethernet.h>
54	#include <net/if.h>
55	#ifdef __rtems__
56	#include <freebsd/net/if_var.h>
57	#else
58	#include <net/if_var.h>
59	#endif
60	#include <net/if_dl.h>
61	#include <net/if_types.h>
62	#ifdef __rtems__
63	#include <freebsd/net/radix.h>
64	#else
65	#include <net/radix.h>
66	#endif
67	#include <net/route.h>
68
69	#include <netinet/in.h>
70	#ifdef __rtems__
71	/* no IPX on RTEMS */
72	/* no AppleTalk on RTEMS */
73	#else
74	#include <netipx/ipx.h>
75	#include <netatalk/at.h>
76	#endif
77	#ifdef __rtems__
78	/* why isn't this protected by a NETGRAPH define */
79	#else
80	#include <netgraph/ng_socket.h>
81	#endif
82
83	#include <sys/sysctl.h>
84
85	#include <arpa/inet.h>
86	#ifdef __rtems__
87	/* apparently libutil.h is not needed */
88	#else
89	#include <libutil.h>
90	#endif
91	#include <netdb.h>
92	#include <stdint.h>
93	#include <stdio.h>
94	#include <stdlib.h>
95	#include <string.h>
96	#include <sysexits.h>
97	#include <unistd.h>
98	#include <err.h>
99	#include "netstat.h"
100
101	#define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d)))
102
103	/*
104	* Definitions for showing gateway flags.
105	*/
106	struct bits {
107	u_long b_mask;
108	char b_val;
109	} bits[] = {
110	{ RTF_UP, 'U' },
111	{ RTF_GATEWAY, 'G' },
112	{ RTF_HOST, 'H' },
113	{ RTF_REJECT, 'R' },
114	{ RTF_DYNAMIC, 'D' },
115	{ RTF_MODIFIED, 'M' },
116	{ RTF_DONE, 'd' }, /* Completed -- for routing messages only */
117	{ RTF_XRESOLVE, 'X' },
118	{ RTF_STATIC, 'S' },
119	{ RTF_PROTO1, '1' },
120	{ RTF_PROTO2, '2' },
121	{ RTF_PRCLONING,'c' },
122	{ RTF_PROTO3, '3' },
123	{ RTF_BLACKHOLE,'B' },
124	{ RTF_BROADCAST,'b' },
125	#ifdef RTF_LLINFO
126	{ RTF_LLINFO, 'L' },
127	#endif
128	#ifdef RTF_WASCLONED
129	{ RTF_WASCLONED,'W' },
130	#endif
131	#ifdef RTF_CLONING
132	{ RTF_CLONING, 'C' },
133	#endif
134	{ 0 , 0 }
135	};
136
137	typedef union {
138	long dummy; /* Helps align structure. */
139	struct sockaddr u_sa;
140	u_short u_data[128];
141	} sa_u;
142
143	static sa_u pt_u;
144
145	int fibnum;
146	int do_rtent = 0;
147	struct rtentry rtentry;
148	struct radix_node rnode;
149	struct radix_mask rmask;
150	struct radix_node_head **rt_tables;
151
152	int NewTree = 0;
153
154	struct timespec uptime;
155
156	static struct sockaddr kgetsa(struct sockaddr );
157	static void size_cols(int ef, struct radix_node *rn);
158	static void size_cols_tree(struct radix_node *rn);
159	static void size_cols_rtentry(struct rtentry *rt);
160	static void p_tree(struct radix_node *);
161	static void p_rtnode(void);
162	static void ntreestuff(void);
163	static void np_rtentry(struct rt_msghdr *);
164	static void p_sockaddr(struct sockaddr , struct sockaddr , int, int);
165	static const char fmt_sockaddr(struct sockaddr sa, struct sockaddr *mask,
166	int flags);
167	static void p_flags(int, const char *);
168	static const char *fmt_flags(int f);
169	static void p_rtentry(struct rtentry *);
170	static void domask(char *, in_addr_t, u_long);
171
172	/*
173	* Print routing tables.
174	*/
175	void
176	routepr(u_long rtree)
177	{
178	struct radix_node_head *rnhp, rnh, head;
179	size_t intsize;
180	int i;
181	int numfibs;
182
183	intsize = sizeof(int);
184	if (sysctlbyname("net.my_fibnum", &fibnum, &intsize, NULL, 0) == -1)
185	fibnum = 0;
186	if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1)
187	numfibs = 1;
188	rt_tables = calloc(numfibs * (AF_MAX+1),
189	sizeof(struct radix_node_head *));
190	if (rt_tables == NULL)
191	err(EX_OSERR, "memory allocation failed");
192	/*
193	* Since kernel & userland use different timebase
194	* (time_uptime vs time_second) and we are reading kernel memory
195	* directly we should do rt_rmx.rmx_expire --> expire_time conversion.
196	*/
197	#ifdef __rtems__
198	#warning "fix clock_gettime(CLOCK_UPTIME)"
199	#else
200	if (clock_gettime(CLOCK_UPTIME, &uptime) < 0)
201	err(EX_OSERR, "clock_gettime() failed");
202	#endif
203
204	printf("Routing tables\n");
205
206	if (Aflag == 0 && NewTree)
207	ntreestuff();
208	else {
209	if (rtree == 0) {
210	printf("rt_tables: symbol not in namelist\n");
211	return;
212	}
213
214	if (kread((u_long)(rtree), (char )(rt_tables), (numfibs
215	(AF_MAX+1) * sizeof(struct radix_node_head *))) != 0)
216	return;
217	for (i = 0; i <= AF_MAX; i++) {
218	int tmpfib;
219	if (i != AF_INET)
220	tmpfib = 0;
221	else
222	tmpfib = fibnum;
223	rnhp = (struct radix_node_head *)rt_tables;
224	/* Calculate the in-kernel address. */
225	rnhp += tmpfib * (AF_MAX+1) + i;
226	/* Read the in kernel rhn pointer. */
227	if (kget(rnhp, rnh) != 0)
228	continue;
229	if (rnh == NULL)
230	continue;
231	/* Read the rnh data. */
232	if (kget(rnh, head) != 0)
233	continue;
234	if (i == AF_UNSPEC) {
235	if (Aflag && af == 0) {
236	printf("Netmasks:\n");
237	p_tree(head.rnh_treetop);
238	}
239	} else if (af == AF_UNSPEC \|\| af == i) {
240	size_cols(i, head.rnh_treetop);
241	pr_family(i);
242	do_rtent = 1;
243	pr_rthdr(i);
244	p_tree(head.rnh_treetop);
245	}
246	}
247	}
248	}
249
250	/*
251	* Print address family header before a section of the routing table.
252	*/
253	void
254	pr_family(int af1)
255	{
256	const char *afname;
257
258	switch (af1) {
259	case AF_INET:
260	afname = "Internet";
261	break;
262	#ifdef INET6
263	case AF_INET6:
264	afname = "Internet6";
265	break;
266	#endif /INET6/
267	case AF_IPX:
268	afname = "IPX";
269	break;
270	case AF_ISO:
271	afname = "ISO";
272	break;
273	case AF_APPLETALK:
274	afname = "AppleTalk";
275	break;
276	case AF_CCITT:
277	afname = "X.25";
278	break;
279	case AF_NETGRAPH:
280	afname = "Netgraph";
281	break;
282	default:
283	afname = NULL;
284	break;
285	}
286	if (afname)
287	printf("\n%s:\n", afname);
288	else
289	printf("\nProtocol Family %d:\n", af1);
290	}
291
292	/* column widths; each followed by one space */
293	#ifndef INET6
294	#define WID_DST_DEFAULT(af) 18 /* width of destination column */
295	#define WID_GW_DEFAULT(af) 18 /* width of gateway column */
296	#define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */
297	#else
298	#define WID_DST_DEFAULT(af) \
299	((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18)
300	#define WID_GW_DEFAULT(af) \
301	((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18)
302	#define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 : 6))
303	#endif /INET6/
304
305	static int wid_dst;
306	static int wid_gw;
307	static int wid_flags;
308	static int wid_refs;
309	static int wid_use;
310	static int wid_mtu;
311	static int wid_if;
312	static int wid_expire;
313
314	static void
315	size_cols(int ef __unused, struct radix_node *rn)
316	{
317	wid_dst = WID_DST_DEFAULT(ef);
318	wid_gw = WID_GW_DEFAULT(ef);
319	wid_flags = 6;
320	wid_refs = 6;
321	wid_use = 8;
322	wid_mtu = 6;
323	wid_if = WID_IF_DEFAULT(ef);
324	wid_expire = 6;
325
326	if (Wflag)
327	size_cols_tree(rn);
328	}
329
330	static void
331	size_cols_tree(struct radix_node *rn)
332	{
333	again:
334	if (kget(rn, rnode) != 0)
335	return;
336	if (!(rnode.rn_flags & RNF_ACTIVE))
337	return;
338	if (rnode.rn_bit < 0) {
339	if ((rnode.rn_flags & RNF_ROOT) == 0) {
340	if (kget(rn, rtentry) != 0)
341	return;
342	size_cols_rtentry(&rtentry);
343	}
344	if ((rn = rnode.rn_dupedkey))
345	goto again;
346	} else {
347	rn = rnode.rn_right;
348	size_cols_tree(rnode.rn_left);
349	size_cols_tree(rn);
350	}
351	}
352
353	static void
354	size_cols_rtentry(struct rtentry *rt)
355	{
356	static struct ifnet ifnet, *lastif;
357	static char buffer[100];
358	const char *bp;
359	struct sockaddr *sa;
360	sa_u addr, mask;
361	int len;
362
363	bzero(&addr, sizeof(addr));
364	if ((sa = kgetsa(rt_key(rt))))
365	bcopy(sa, &addr, sa->sa_len);
366	bzero(&mask, sizeof(mask));
367	if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt))))
368	bcopy(sa, &mask, sa->sa_len);
369	bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags);
370	len = strlen(bp);
371	wid_dst = MAX(len, wid_dst);
372
373	bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST);
374	len = strlen(bp);
375	wid_gw = MAX(len, wid_gw);
376
377	bp = fmt_flags(rt->rt_flags);
378	len = strlen(bp);
379	wid_flags = MAX(len, wid_flags);
380
381	if (addr.u_sa.sa_family == AF_INET \|\| Wflag) {
382	len = snprintf(buffer, sizeof(buffer), "%d", rt->rt_refcnt);
383	wid_refs = MAX(len, wid_refs);
384	len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use);
385	wid_use = MAX(len, wid_use);
386	if (Wflag && rt->rt_rmx.rmx_mtu != 0) {
387	len = snprintf(buffer, sizeof(buffer),
388	"%lu", rt->rt_rmx.rmx_mtu);
389	wid_mtu = MAX(len, wid_mtu);
390	}
391	}
392	if (rt->rt_ifp) {
393	if (rt->rt_ifp != lastif) {
394	if (kget(rt->rt_ifp, ifnet) == 0)
395	len = strlen(ifnet.if_xname);
396	else
397	len = strlen("---");
398	lastif = rt->rt_ifp;
399	wid_if = MAX(len, wid_if);
400	}
401	if (rt->rt_rmx.rmx_expire) {
402	time_t expire_time;
403
404	if ((expire_time =
405	rt->rt_rmx.rmx_expire - uptime.tv_sec) > 0) {
406	len = snprintf(buffer, sizeof(buffer), "%d",
407	(int)expire_time);
408	wid_expire = MAX(len, wid_expire);
409	}
410	}
411	}
412	}
413
414
415	/*
416	* Print header for routing table columns.
417	*/
418	void
419	pr_rthdr(int af1)
420	{
421
422	if (Aflag)
423	printf("%-8.8s ","Address");
424	if (af1 == AF_INET \|\| Wflag) {
425	if (Wflag) {
426	printf("%-.s %-.s %-.s %.s %.s %.s %.s %*s\n",
427	wid_dst, wid_dst, "Destination",
428	wid_gw, wid_gw, "Gateway",
429	wid_flags, wid_flags, "Flags",
430	wid_refs, wid_refs, "Refs",
431	wid_use, wid_use, "Use",
432	wid_mtu, wid_mtu, "Mtu",
433	wid_if, wid_if, "Netif",
434	wid_expire, "Expire");
435	} else {
436	printf("%-.s %-.s %-.s %.s %.s %.s %*s\n",
437	wid_dst, wid_dst, "Destination",
438	wid_gw, wid_gw, "Gateway",
439	wid_flags, wid_flags, "Flags",
440	wid_refs, wid_refs, "Refs",
441	wid_use, wid_use, "Use",
442	wid_if, wid_if, "Netif",
443	wid_expire, "Expire");
444	}
445	} else {
446	printf("%-.s %-.s %-.s %.s %*s\n",
447	wid_dst, wid_dst, "Destination",
448	wid_gw, wid_gw, "Gateway",
449	wid_flags, wid_flags, "Flags",
450	wid_if, wid_if, "Netif",
451	wid_expire, "Expire");
452	}
453	}
454
455	static struct sockaddr *
456	kgetsa(struct sockaddr *dst)
457	{
458
459	if (kget(dst, pt_u.u_sa) != 0)
460	return (NULL);
461	if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa))
462	kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len);
463	return (&pt_u.u_sa);
464	}
465
466	static void
467	p_tree(struct radix_node *rn)
468	{
469
470	again:
471	if (kget(rn, rnode) != 0)
472	return;
473	if (!(rnode.rn_flags & RNF_ACTIVE))
474	return;
475	if (rnode.rn_bit < 0) {
476	if (Aflag)
477	printf("%-8.8lx ", (u_long)rn);
478	if (rnode.rn_flags & RNF_ROOT) {
479	if (Aflag)
480	printf("(root node)%s",
481	rnode.rn_dupedkey ? " =>\n" : "\n");
482	} else if (do_rtent) {
483	if (kget(rn, rtentry) == 0) {
484	p_rtentry(&rtentry);
485	if (Aflag)
486	p_rtnode();
487	}
488	} else {
489	p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key),
490	NULL, 0, 44);
491	putchar('\n');
492	}
493	if ((rn = rnode.rn_dupedkey))
494	goto again;
495	} else {
496	if (Aflag && do_rtent) {
497	printf("%-8.8lx ", (u_long)rn);
498	p_rtnode();
499	}
500	rn = rnode.rn_right;
501	p_tree(rnode.rn_left);
502	p_tree(rn);
503	}
504	}
505
506	char nbuf[20];
507
508	static void
509	p_rtnode(void)
510	{
511	struct radix_mask *rm = rnode.rn_mklist;
512
513	if (rnode.rn_bit < 0) {
514	if (rnode.rn_mask) {
515	printf("\t mask ");
516	p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask),
517	NULL, 0, -1);
518	} else if (rm == 0)
519	return;
520	} else {
521	sprintf(nbuf, "(%d)", rnode.rn_bit);
522	printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right);
523	}
524	while (rm) {
525	if (kget(rm, rmask) != 0)
526	break;
527	sprintf(nbuf, " %d refs, ", rmask.rm_refs);
528	printf(" mk = %8.8lx {(%d),%s",
529	(u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " ");
530	if (rmask.rm_flags & RNF_NORMAL) {
531	struct radix_node rnode_aux;
532	printf(" <normal>, ");
533	if (kget(rmask.rm_leaf, rnode_aux) == 0)
534	p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask),
535	NULL, 0, -1);
536	else
537	p_sockaddr(NULL, NULL, 0, -1);
538	} else
539	p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask),
540	NULL, 0, -1);
541	putchar('}');
542	if ((rm = rmask.rm_mklist))
543	printf(" ->");
544	}
545	putchar('\n');
546	}
547
548	static void
549	ntreestuff(void)
550	{
551	size_t needed;
552	int mib[6];
553	char buf, next, *lim;
554	struct rt_msghdr *rtm;
555
556	mib[0] = CTL_NET;
557	mib[1] = PF_ROUTE;
558	mib[2] = 0;
559	mib[3] = 0;
560	mib[4] = NET_RT_DUMP;
561	mib[5] = 0;
562	if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) {
563	err(1, "sysctl: net.route.0.0.dump estimate");
564	}
565
566	if ((buf = malloc(needed)) == 0) {
567	errx(2, "malloc(%lu)", (unsigned long)needed);
568	}
569	if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
570	err(1, "sysctl: net.route.0.0.dump");
571	}
572	lim = buf + needed;
573	for (next = buf; next < lim; next += rtm->rtm_msglen) {
574	rtm = (struct rt_msghdr *)next;
575	np_rtentry(rtm);
576	}
577	}
578
579	static void
580	np_rtentry(struct rt_msghdr *rtm)
581	{
582	struct sockaddr sa = (struct sockaddr )(rtm + 1);
583	#ifdef notdef
584	static int masks_done, banner_printed;
585	#endif
586	static int old_af;
587	int af1 = 0, interesting = RTF_UP \| RTF_GATEWAY \| RTF_HOST;
588
589	#ifdef notdef
590	/* for the moment, netmasks are skipped over */
591	if (!banner_printed) {
592	printf("Netmasks:\n");
593	banner_printed = 1;
594	}
595	if (masks_done == 0) {
596	if (rtm->rtm_addrs != RTA_DST ) {
597	masks_done = 1;
598	af1 = sa->sa_family;
599	}
600	} else
601	#endif
602	af1 = sa->sa_family;
603	if (af1 != old_af) {
604	pr_family(af1);
605	old_af = af1;
606	}
607	if (rtm->rtm_addrs == RTA_DST)
608	p_sockaddr(sa, NULL, 0, 36);
609	else {
610	p_sockaddr(sa, NULL, rtm->rtm_flags, 16);
611	sa = (struct sockaddr )(SA_SIZE(sa) + (char )sa);
612	p_sockaddr(sa, NULL, 0, 18);
613	}
614	p_flags(rtm->rtm_flags & interesting, "%-6.6s ");
615	putchar('\n');
616	}
617
618	static void
619	p_sockaddr(struct sockaddr sa, struct sockaddr mask, int flags, int width)
620	{
621	const char *cp;
622
623	cp = fmt_sockaddr(sa, mask, flags);
624
625	if (width < 0 )
626	printf("%s ", cp);
627	else {
628	if (numeric_addr)
629	printf("%-*s ", width, cp);
630	else
631	printf("%-.s ", width, width, cp);
632	}
633	}
634
635	static const char *
636	fmt_sockaddr(struct sockaddr sa, struct sockaddr mask, int flags)
637	{
638	static char workbuf[128];
639	const char *cp;
640
641	if (sa == NULL)
642	return ("null");
643
644	switch(sa->sa_family) {
645	case AF_INET:
646	{
647	struct sockaddr_in sockin = (struct sockaddr_in )sa;
648
649	if ((sockin->sin_addr.s_addr == INADDR_ANY) &&
650	mask &&
651	ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr)
652	==0L)
653	cp = "default" ;
654	else if (flags & RTF_HOST)
655	cp = routename(sockin->sin_addr.s_addr);
656	else if (mask)
657	cp = netname(sockin->sin_addr.s_addr,
658	ntohl(((struct sockaddr_in *)mask)
659	->sin_addr.s_addr));
660	else
661	cp = netname(sockin->sin_addr.s_addr, 0L);
662	break;
663	}
664
665	#ifdef INET6
666	case AF_INET6:
667	{
668	struct sockaddr_in6 sa6 = (struct sockaddr_in6 )sa;
669	struct in6_addr *in6 = &sa6->sin6_addr;
670
671	/*
672	* XXX: This is a special workaround for KAME kernels.
673	* sin6_scope_id field of SA should be set in the future.
674	*/
675	if (IN6_IS_ADDR_LINKLOCAL(in6) \|\|
676	IN6_IS_ADDR_MC_LINKLOCAL(in6)) {
677	/* XXX: override is ok? */
678	sa6->sin6_scope_id = (u_int32_t)ntohs((u_short )&in6->s6_addr[2]);
679	(u_short )&in6->s6_addr[2] = 0;
680	}
681
682	if (flags & RTF_HOST)
683	cp = routename6(sa6);
684	else if (mask)
685	cp = netname6(sa6,
686	&((struct sockaddr_in6 *)mask)->sin6_addr);
687	else {
688	cp = netname6(sa6, NULL);
689	}
690	break;
691	}
692	#endif /INET6/
693
694	#ifndef __rtems__
695	case AF_IPX:
696	{
697	struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr;
698	if (ipx_nullnet(satoipx_addr(work)))
699	cp = "default";
700	else
701	cp = ipx_print(sa);
702	break;
703	}
704	case AF_APPLETALK:
705	{
706	if (!(flags & RTF_HOST) && mask)
707	cp = atalk_print2(sa,mask,9);
708	else
709	cp = atalk_print(sa,11);
710	break;
711	}
712	#endif
713	case AF_NETGRAPH:
714	{
715	#ifdef __rtems__
716	/* netgraph not supported yet */
717	err(EX_OSERR, "memory allocation failed");
718	#else
719	strlcpy(workbuf, ((struct sockaddr_ng *)sa)->sg_data,
720	sizeof(workbuf));
721	cp = workbuf;
722	#endif
723	break;
724	}
725
726	case AF_LINK:
727	{
728	struct sockaddr_dl sdl = (struct sockaddr_dl )sa;
729
730	if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
731	sdl->sdl_slen == 0) {
732	(void) sprintf(workbuf, "link#%d", sdl->sdl_index);
733	cp = workbuf;
734	} else
735	switch (sdl->sdl_type) {
736
737	case IFT_ETHER:
738	case IFT_L2VLAN:
739	case IFT_BRIDGE:
740	if (sdl->sdl_alen == ETHER_ADDR_LEN) {
741	cp = ether_ntoa((struct ether_addr *)
742	(sdl->sdl_data + sdl->sdl_nlen));
743	break;
744	}
745	/* FALLTHROUGH */
746	default:
747	cp = link_ntoa(sdl);
748	break;
749	}
750	break;
751	}
752
753	default:
754	{
755	u_char s = (u_char )sa->sa_data, *slim;
756	char cq, cqlim;
757
758	cq = workbuf;
759	slim = sa->sa_len + (u_char *) sa;
760	cqlim = cq + sizeof(workbuf) - 6;
761	cq += sprintf(cq, "(%d)", sa->sa_family);
762	while (s < slim && cq < cqlim) {
763	cq += sprintf(cq, " %02x", *s++);
764	if (s < slim)
765	cq += sprintf(cq, "%02x", *s++);
766	}
767	cp = workbuf;
768	}
769	}
770
771	return (cp);
772	}
773
774	static void
775	p_flags(int f, const char *format)
776	{
777	printf(format, fmt_flags(f));
778	}
779
780	static const char *
781	fmt_flags(int f)
782	{
783	static char name[33];
784	char *flags;
785	struct bits *p = bits;
786
787	for (flags = name; p->b_mask; p++)
788	if (p->b_mask & f)
789	*flags++ = p->b_val;
790	*flags = '\0';
791	return (name);
792	}
793
794	static void
795	p_rtentry(struct rtentry *rt)
796	{
797	static struct ifnet ifnet, *lastif;
798	static char buffer[128];
799	static char prettyname[128];
800	struct sockaddr *sa;
801	sa_u addr, mask;
802
803	bzero(&addr, sizeof(addr));
804	if ((sa = kgetsa(rt_key(rt))))
805	bcopy(sa, &addr, sa->sa_len);
806	bzero(&mask, sizeof(mask));
807	if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt))))
808	bcopy(sa, &mask, sa->sa_len);
809	p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst);
810	p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw);
811	snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags);
812	p_flags(rt->rt_flags, buffer);
813	if (addr.u_sa.sa_family == AF_INET \|\| Wflag) {
814	printf("%d %lu ", wid_refs, rt->rt_refcnt,
815	wid_use, rt->rt_use);
816	if (Wflag) {
817	if (rt->rt_rmx.rmx_mtu != 0)
818	printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu);
819	else
820	printf("%*s ", wid_mtu, "");
821	}
822	}
823	if (rt->rt_ifp) {
824	if (rt->rt_ifp != lastif) {
825	if (kget(rt->rt_ifp, ifnet) == 0)
826	strlcpy(prettyname, ifnet.if_xname,
827	sizeof(prettyname));
828	else
829	strlcpy(prettyname, "---", sizeof(prettyname));
830	lastif = rt->rt_ifp;
831	}
832	printf("%.s", wid_if, wid_if, prettyname);
833	if (rt->rt_rmx.rmx_expire) {
834	time_t expire_time;
835
836	if ((expire_time =
837	rt->rt_rmx.rmx_expire - uptime.tv_sec) > 0)
838	printf(" %*d", wid_expire, (int)expire_time);
839	}
840	if (rt->rt_nodes[0].rn_dupedkey)
841	printf(" =>");
842	}
843	putchar('\n');
844	}
845
846	char *
847	routename(in_addr_t in)
848	{
849	char *cp;
850	static char line[MAXHOSTNAMELEN];
851	struct hostent *hp;
852
853	cp = 0;
854	if (!numeric_addr) {
855	hp = gethostbyaddr(&in, sizeof (struct in_addr), AF_INET);
856	if (hp) {
857	cp = hp->h_name;
858	trimdomain(cp, strlen(cp));
859	}
860	}
861	if (cp) {
862	strlcpy(line, cp, sizeof(line));
863	} else {
864	#define C(x) ((x) & 0xff)
865	in = ntohl(in);
866	sprintf(line, "%u.%u.%u.%u",
867	C(in >> 24), C(in >> 16), C(in >> 8), C(in));
868	}
869	return (line);
870	}
871
872	#define NSHIFT(m) ( \
873	(m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \
874	(m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \
875	(m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \
876	0)
877
878	static void
879	domask(char *dst, in_addr_t addr __unused, u_long mask)
880	{
881	int b, i;
882
883	if (mask == 0 \|\| (!numeric_addr && NSHIFT(mask) != 0)) {
884	*dst = '\0';
885	return;
886	}
887	i = 0;
888	for (b = 0; b < 32; b++)
889	if (mask & (1 << b)) {
890	int bb;
891
892	i = b;
893	for (bb = b+1; bb < 32; bb++)
894	if (!(mask & (1 << bb))) {
895	i = -1; /* noncontig */
896	break;
897	}
898	break;
899	}
900	if (i == -1)
901	sprintf(dst, "&0x%lx", mask);
902	else
903	sprintf(dst, "/%d", 32-i);
904	}
905
906	/*
907	* Return the name of the network whose address is given.
908	* The address is assumed to be that of a net or subnet, not a host.
909	*/
910	char *
911	netname(in_addr_t in, u_long mask)
912	{
913	char *cp = 0;
914	static char line[MAXHOSTNAMELEN];
915	struct netent *np = 0;
916	in_addr_t i;
917
918	i = ntohl(in);
919	if (!numeric_addr && i) {
920	np = getnetbyaddr(i >> NSHIFT(mask), AF_INET);
921	if (np != NULL) {
922	cp = np->n_name;
923	trimdomain(cp, strlen(cp));
924	}
925	}
926	if (cp != NULL) {
927	strlcpy(line, cp, sizeof(line));
928	} else {
929	inet_ntop(AF_INET, &in, line, sizeof(line) - 1);
930	}
931	domask(line + strlen(line), i, mask);
932	return (line);
933	}
934
935	#undef NSHIFT
936
937	#ifdef INET6
938	const char *
939	netname6(struct sockaddr_in6 sa6, struct in6_addr mask)
940	{
941	static char line[MAXHOSTNAMELEN];
942	u_char p = (u_char )mask;
943	u_char *lim;
944	int masklen, illegal = 0, flag = 0;
945
946	if (mask) {
947	for (masklen = 0, lim = p + 16; p < lim; p++) {
948	switch (*p) {
949	case 0xff:
950	masklen += 8;
951	break;
952	case 0xfe:
953	masklen += 7;
954	break;
955	case 0xfc:
956	masklen += 6;
957	break;
958	case 0xf8:
959	masklen += 5;
960	break;
961	case 0xf0:
962	masklen += 4;
963	break;
964	case 0xe0:
965	masklen += 3;
966	break;
967	case 0xc0:
968	masklen += 2;
969	break;
970	case 0x80:
971	masklen += 1;
972	break;
973	case 0x00:
974	break;
975	default:
976	illegal ++;
977	break;
978	}
979	}
980	if (illegal)
981	fprintf(stderr, "illegal prefixlen\n");
982	}
983	else
984	masklen = 128;
985
986	if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr))
987	return("default");
988
989	if (numeric_addr)
990	flag \|= NI_NUMERICHOST;
991	getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line),
992	NULL, 0, flag);
993
994	if (numeric_addr)
995	sprintf(&line[strlen(line)], "/%d", masklen);
996
997	return line;
998	}
999
1000	char *
1001	routename6(struct sockaddr_in6 *sa6)
1002	{
1003	static char line[MAXHOSTNAMELEN];
1004	int flag = 0;
1005	/* use local variable for safety */
1006	struct sockaddr_in6 sa6_local;
1007
1008	sa6_local.sin6_family = AF_INET6;
1009	sa6_local.sin6_len = sizeof(sa6_local);
1010	sa6_local.sin6_addr = sa6->sin6_addr;
1011	sa6_local.sin6_scope_id = sa6->sin6_scope_id;
1012
1013	if (numeric_addr)
1014	flag \|= NI_NUMERICHOST;
1015
1016	getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len,
1017	line, sizeof(line), NULL, 0, flag);
1018
1019	return line;
1020	}
1021	#endif /INET6/
1022
1023	/*
1024	* Print routing statistics
1025	*/
1026	void
1027	rt_stats(u_long rtsaddr, u_long rttaddr)
1028	{
1029	struct rtstat rtstat;
1030	int rttrash;
1031
1032	if (rtsaddr == 0) {
1033	printf("rtstat: symbol not in namelist\n");
1034	return;
1035	}
1036	if (rttaddr == 0) {
1037	printf("rttrash: symbol not in namelist\n");
1038	return;
1039	}
1040	kread(rtsaddr, (char *)&rtstat, sizeof (rtstat));
1041	kread(rttaddr, (char *)&rttrash, sizeof (rttrash));
1042	printf("routing:\n");
1043
1044	#define p(f, m) if (rtstat.f \|\| sflag <= 1) \
1045	printf(m, rtstat.f, plural(rtstat.f))
1046
1047	p(rts_badredirect, "\t%hu bad routing redirect%s\n");
1048	p(rts_dynamic, "\t%hu dynamically created route%s\n");
1049	p(rts_newgateway, "\t%hu new gateway%s due to redirects\n");
1050	p(rts_unreach, "\t%hu destination%s found unreachable\n");
1051	p(rts_wildcard, "\t%hu use%s of a wildcard route\n");
1052	#undef p
1053
1054	if (rttrash \|\| sflag <= 1)
1055	printf("\t%u route%s not in table but not freed\n",
1056	rttrash, plural(rttrash));
1057	}
1058
1059	#ifndef __rtems__
1060	char *
1061	ipx_print(struct sockaddr *sa)
1062	{
1063	u_short port;
1064	struct servent *sp = 0;
1065	const char net = "", host = "";
1066	char *p;
1067	u_char *q;
1068	struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr;
1069	static char mybuf[50];
1070	char cport[10], chost[15], cnet[15];
1071
1072	port = ntohs(work.x_port);
1073
1074	if (ipx_nullnet(work) && ipx_nullhost(work)) {
1075
1076	if (port) {
1077	if (sp)
1078	sprintf(mybuf, "*.%s", sp->s_name);
1079	else
1080	sprintf(mybuf, "*.%x", port);
1081	} else
1082	sprintf(mybuf, ".");
1083
1084	return (mybuf);
1085	}
1086
1087	if (ipx_wildnet(work))
1088	net = "any";
1089	else if (ipx_nullnet(work))
1090	net = "*";
1091	else {
1092	q = work.x_net.c_net;
1093	sprintf(cnet, "%02x%02x%02x%02x",
1094	q[0], q[1], q[2], q[3]);
1095	for (p = cnet; *p == '0' && p < cnet + 8; p++)
1096	continue;
1097	net = p;
1098	}
1099
1100	if (ipx_wildhost(work))
1101	host = "any";
1102	else if (ipx_nullhost(work))
1103	host = "*";
1104	else {
1105	q = work.x_host.c_host;
1106	sprintf(chost, "%02x%02x%02x%02x%02x%02x",
1107	q[0], q[1], q[2], q[3], q[4], q[5]);
1108	for (p = chost; *p == '0' && p < chost + 12; p++)
1109	continue;
1110	host = p;
1111	}
1112
1113	if (port) {
1114	if (strcmp(host, "*") == 0)
1115	host = "";
1116	if (sp)
1117	snprintf(cport, sizeof(cport),
1118	"%s%s", *host ? "." : "", sp->s_name);
1119	else
1120	snprintf(cport, sizeof(cport),
1121	"%s%x", *host ? "." : "", port);
1122	} else
1123	*cport = 0;
1124
1125	snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport);
1126	return(mybuf);
1127	}
1128
1129	char *
1130	ipx_phost(struct sockaddr *sa)
1131	{
1132	struct sockaddr_ipx sipx = (struct sockaddr_ipx )sa;
1133	struct sockaddr_ipx work;
1134	static union ipx_net ipx_zeronet;
1135	char *p;
1136	struct ipx_addr in;
1137
1138	work = *sipx;
1139	in = work.sipx_addr;
1140
1141	work.sipx_addr.x_port = 0;
1142	work.sipx_addr.x_net = ipx_zeronet;
1143	p = ipx_print((struct sockaddr *)&work);
1144	if (strncmp("*.", p, 2) == 0) p += 2;
1145
1146	return(p);
1147	}
1148	#endif
1149
1150	void
1151	upHex(char *p0)
1152	{
1153	char *p = p0;
1154
1155	for (; *p; p++)
1156	switch (*p) {
1157
1158	case 'a':
1159	case 'b':
1160	case 'c':
1161	case 'd':
1162	case 'e':
1163	case 'f':
1164	*p += ('A' - 'a');
1165	break;
1166	}
1167	}

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source: rtems-libbsd/freebsd-userspace/commands/usr.bin/netstat/route.c @ f1710b6

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