pfctl_table.c revision 7551d83c353e040b32c6ac205e577dbc5f2c8955
1/*	$OpenBSD: pfctl_table.c,v 1.67 2008/06/10 20:55:02 mcbride Exp $ */
2
3/*-
4 * SPDX-License-Identifier: BSD-2-Clause
5 *
6 * Copyright (c) 2002 Cedric Berger
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 *    - Redistributions of source code must retain the above copyright
14 *      notice, this list of conditions and the following disclaimer.
15 *    - Redistributions in binary form must reproduce the above
16 *      copyright notice, this list of conditions and the following
17 *      disclaimer in the documentation and/or other materials provided
18 *      with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
28 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 *
33 */
34
35#include <sys/cdefs.h>
36__FBSDID("$FreeBSD$");
37
38#include <sys/types.h>
39#include <sys/ioctl.h>
40#include <sys/socket.h>
41
42#include <net/if.h>
43#include <net/pfvar.h>
44#include <arpa/inet.h>
45
46#include <ctype.h>
47#include <err.h>
48#include <errno.h>
49#include <netdb.h>
50#include <stdarg.h>
51#include <stdio.h>
52#include <stdlib.h>
53#include <string.h>
54#include <time.h>
55
56#include "pfctl_parser.h"
57#include "pfctl.h"
58
59extern void	usage(void);
60static int	pfctl_table(int, char *[], char *, const char *, char *,
61		    const char *, int);
62static void	print_table(struct pfr_table *, int, int);
63static void	print_tstats(struct pfr_tstats *, int);
64static int	load_addr(struct pfr_buffer *, int, char *[], char *, int);
65static void	print_addrx(struct pfr_addr *, struct pfr_addr *, int);
66static void	print_astats(struct pfr_astats *, int);
67static void	radix_perror(void);
68static void	xprintf(int, const char *, ...);
69static void	print_iface(struct pfi_kif *, int);
70
71static const char	*stats_text[PFR_DIR_MAX][PFR_OP_TABLE_MAX] = {
72	{ "In/Block:",	"In/Pass:",	"In/XPass:" },
73	{ "Out/Block:",	"Out/Pass:",	"Out/XPass:" }
74};
75
76static const char	*istats_text[2][2][2] = {
77	{ { "In4/Pass:", "In4/Block:" }, { "Out4/Pass:", "Out4/Block:" } },
78	{ { "In6/Pass:", "In6/Block:" }, { "Out6/Pass:", "Out6/Block:" } }
79};
80
81#define RVTEST(fct) do {				\
82		if ((!(opts & PF_OPT_NOACTION) ||	\
83		    (opts & PF_OPT_DUMMYACTION)) &&	\
84		    (fct)) {				\
85			radix_perror();			\
86			goto _error;			\
87		}					\
88	} while (0)
89
90#define CREATE_TABLE do {						\
91		table.pfrt_flags |= PFR_TFLAG_PERSIST;			\
92		if ((!(opts & PF_OPT_NOACTION) ||			\
93		    (opts & PF_OPT_DUMMYACTION)) &&			\
94		    (pfr_add_tables(&table, 1, &nadd, flags)) &&	\
95		    (errno != EPERM)) {					\
96			radix_perror();					\
97			goto _error;					\
98		}							\
99		if (nadd) {						\
100			warn_namespace_collision(table.pfrt_name);	\
101			xprintf(opts, "%d table created", nadd);	\
102			if (opts & PF_OPT_NOACTION)			\
103				return (0);				\
104		}							\
105		table.pfrt_flags &= ~PFR_TFLAG_PERSIST;			\
106	} while(0)
107
108int
109pfctl_clear_tables(const char *anchor, int opts)
110{
111	return pfctl_table(0, NULL, NULL, "-F", NULL, anchor, opts);
112}
113
114int
115pfctl_show_tables(const char *anchor, int opts)
116{
117	return pfctl_table(0, NULL, NULL, "-s", NULL, anchor, opts);
118}
119
120int
121pfctl_command_tables(int argc, char *argv[], char *tname,
122    const char *command, char *file, const char *anchor, int opts)
123{
124	if (tname == NULL || command == NULL)
125		usage();
126	return pfctl_table(argc, argv, tname, command, file, anchor, opts);
127}
128
129int
130pfctl_table(int argc, char *argv[], char *tname, const char *command,
131    char *file, const char *anchor, int opts)
132{
133	struct pfr_table	 table;
134	struct pfr_buffer	 b, b2;
135	struct pfr_addr		*a, *a2;
136	int			 nadd = 0, ndel = 0, nchange = 0, nzero = 0;
137	int			 rv = 0, flags = 0, nmatch = 0;
138	void			*p;
139
140	if (command == NULL)
141		usage();
142	if (opts & PF_OPT_NOACTION)
143		flags |= PFR_FLAG_DUMMY;
144
145	bzero(&b, sizeof(b));
146	bzero(&b2, sizeof(b2));
147	bzero(&table, sizeof(table));
148	if (tname != NULL) {
149		if (strlen(tname) >= PF_TABLE_NAME_SIZE)
150			usage();
151		if (strlcpy(table.pfrt_name, tname,
152		    sizeof(table.pfrt_name)) >= sizeof(table.pfrt_name))
153			errx(1, "pfctl_table: strlcpy");
154	}
155	if (strlcpy(table.pfrt_anchor, anchor,
156	    sizeof(table.pfrt_anchor)) >= sizeof(table.pfrt_anchor))
157		errx(1, "pfctl_table: strlcpy");
158
159	if (!strcmp(command, "-F")) {
160		if (argc || file != NULL)
161			usage();
162		RVTEST(pfr_clr_tables(&table, &ndel, flags));
163		xprintf(opts, "%d tables deleted", ndel);
164	} else if (!strcmp(command, "-s")) {
165		b.pfrb_type = (opts & PF_OPT_VERBOSE2) ?
166		    PFRB_TSTATS : PFRB_TABLES;
167		if (argc || file != NULL)
168			usage();
169		for (;;) {
170			pfr_buf_grow(&b, b.pfrb_size);
171			b.pfrb_size = b.pfrb_msize;
172			if (opts & PF_OPT_VERBOSE2)
173				RVTEST(pfr_get_tstats(&table,
174				    b.pfrb_caddr, &b.pfrb_size, flags));
175			else
176				RVTEST(pfr_get_tables(&table,
177				    b.pfrb_caddr, &b.pfrb_size, flags));
178			if (b.pfrb_size <= b.pfrb_msize)
179				break;
180		}
181
182		if ((opts & PF_OPT_SHOWALL) && b.pfrb_size > 0)
183			pfctl_print_title("TABLES:");
184
185		PFRB_FOREACH(p, &b)
186			if (opts & PF_OPT_VERBOSE2)
187				print_tstats(p, opts & PF_OPT_DEBUG);
188			else
189				print_table(p, opts & PF_OPT_VERBOSE,
190				    opts & PF_OPT_DEBUG);
191	} else if (!strcmp(command, "kill")) {
192		if (argc || file != NULL)
193			usage();
194		RVTEST(pfr_del_tables(&table, 1, &ndel, flags));
195		xprintf(opts, "%d table deleted", ndel);
196	} else if (!strcmp(command, "flush")) {
197		if (argc || file != NULL)
198			usage();
199		RVTEST(pfr_clr_addrs(&table, &ndel, flags));
200		xprintf(opts, "%d addresses deleted", ndel);
201	} else if (!strcmp(command, "add")) {
202		b.pfrb_type = PFRB_ADDRS;
203		if (load_addr(&b, argc, argv, file, 0))
204			goto _error;
205		CREATE_TABLE;
206		if (opts & PF_OPT_VERBOSE)
207			flags |= PFR_FLAG_FEEDBACK;
208		RVTEST(pfr_add_addrs(&table, b.pfrb_caddr, b.pfrb_size,
209		    &nadd, flags));
210		xprintf(opts, "%d/%d addresses added", nadd, b.pfrb_size);
211		if (opts & PF_OPT_VERBOSE)
212			PFRB_FOREACH(a, &b)
213				if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
214					print_addrx(a, NULL,
215					    opts & PF_OPT_USEDNS);
216	} else if (!strcmp(command, "delete")) {
217		b.pfrb_type = PFRB_ADDRS;
218		if (load_addr(&b, argc, argv, file, 0))
219			goto _error;
220		if (opts & PF_OPT_VERBOSE)
221			flags |= PFR_FLAG_FEEDBACK;
222		RVTEST(pfr_del_addrs(&table, b.pfrb_caddr, b.pfrb_size,
223		    &ndel, flags));
224		xprintf(opts, "%d/%d addresses deleted", ndel, b.pfrb_size);
225		if (opts & PF_OPT_VERBOSE)
226			PFRB_FOREACH(a, &b)
227				if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
228					print_addrx(a, NULL,
229					    opts & PF_OPT_USEDNS);
230	} else if (!strcmp(command, "replace")) {
231		b.pfrb_type = PFRB_ADDRS;
232		if (load_addr(&b, argc, argv, file, 0))
233			goto _error;
234		CREATE_TABLE;
235		if (opts & PF_OPT_VERBOSE)
236			flags |= PFR_FLAG_FEEDBACK;
237		for (;;) {
238			int sz2 = b.pfrb_msize;
239
240			RVTEST(pfr_set_addrs(&table, b.pfrb_caddr, b.pfrb_size,
241			    &sz2, &nadd, &ndel, &nchange, flags));
242			if (sz2 <= b.pfrb_msize) {
243				b.pfrb_size = sz2;
244				break;
245			} else
246				pfr_buf_grow(&b, sz2);
247		}
248		if (nadd)
249			xprintf(opts, "%d addresses added", nadd);
250		if (ndel)
251			xprintf(opts, "%d addresses deleted", ndel);
252		if (nchange)
253			xprintf(opts, "%d addresses changed", nchange);
254		if (!nadd && !ndel && !nchange)
255			xprintf(opts, "no changes");
256		if (opts & PF_OPT_VERBOSE)
257			PFRB_FOREACH(a, &b)
258				if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
259					print_addrx(a, NULL,
260					    opts & PF_OPT_USEDNS);
261	} else if (!strcmp(command, "expire")) {
262		const char		*errstr;
263		u_int			 lifetime;
264
265		b.pfrb_type = PFRB_ASTATS;
266		b2.pfrb_type = PFRB_ADDRS;
267		if (argc != 1 || file != NULL)
268			usage();
269		lifetime = strtonum(*argv, 0, UINT_MAX, &errstr);
270		if (errstr)
271			errx(1, "expiry time: %s", errstr);
272		for (;;) {
273			pfr_buf_grow(&b, b.pfrb_size);
274			b.pfrb_size = b.pfrb_msize;
275			RVTEST(pfr_get_astats(&table, b.pfrb_caddr,
276			    &b.pfrb_size, flags));
277			if (b.pfrb_size <= b.pfrb_msize)
278				break;
279		}
280		PFRB_FOREACH(p, &b) {
281			((struct pfr_astats *)p)->pfras_a.pfra_fback = 0;
282			if (time(NULL) - ((struct pfr_astats *)p)->pfras_tzero >
283			    lifetime)
284				if (pfr_buf_add(&b2,
285				    &((struct pfr_astats *)p)->pfras_a))
286					err(1, "duplicate buffer");
287		}
288
289		if (opts & PF_OPT_VERBOSE)
290			flags |= PFR_FLAG_FEEDBACK;
291		RVTEST(pfr_del_addrs(&table, b2.pfrb_caddr, b2.pfrb_size,
292		    &ndel, flags));
293		xprintf(opts, "%d/%d addresses expired", ndel, b2.pfrb_size);
294		if (opts & PF_OPT_VERBOSE)
295			PFRB_FOREACH(a, &b2)
296				if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
297					print_addrx(a, NULL,
298					    opts & PF_OPT_USEDNS);
299	} else if (!strcmp(command, "show")) {
300		b.pfrb_type = (opts & PF_OPT_VERBOSE) ?
301			PFRB_ASTATS : PFRB_ADDRS;
302		if (argc || file != NULL)
303			usage();
304		for (;;) {
305			pfr_buf_grow(&b, b.pfrb_size);
306			b.pfrb_size = b.pfrb_msize;
307			if (opts & PF_OPT_VERBOSE)
308				RVTEST(pfr_get_astats(&table, b.pfrb_caddr,
309				    &b.pfrb_size, flags));
310			else
311				RVTEST(pfr_get_addrs(&table, b.pfrb_caddr,
312				    &b.pfrb_size, flags));
313			if (b.pfrb_size <= b.pfrb_msize)
314				break;
315		}
316		PFRB_FOREACH(p, &b)
317			if (opts & PF_OPT_VERBOSE)
318				print_astats(p, opts & PF_OPT_USEDNS);
319			else
320				print_addrx(p, NULL, opts & PF_OPT_USEDNS);
321	} else if (!strcmp(command, "test")) {
322		b.pfrb_type = PFRB_ADDRS;
323		b2.pfrb_type = PFRB_ADDRS;
324
325		if (load_addr(&b, argc, argv, file, 1))
326			goto _error;
327		if (opts & PF_OPT_VERBOSE2) {
328			flags |= PFR_FLAG_REPLACE;
329			PFRB_FOREACH(a, &b)
330				if (pfr_buf_add(&b2, a))
331					err(1, "duplicate buffer");
332		}
333		RVTEST(pfr_tst_addrs(&table, b.pfrb_caddr, b.pfrb_size,
334		    &nmatch, flags));
335		xprintf(opts, "%d/%d addresses match", nmatch, b.pfrb_size);
336		if ((opts & PF_OPT_VERBOSE) && !(opts & PF_OPT_VERBOSE2))
337			PFRB_FOREACH(a, &b)
338				if (a->pfra_fback == PFR_FB_MATCH)
339					print_addrx(a, NULL,
340					    opts & PF_OPT_USEDNS);
341		if (opts & PF_OPT_VERBOSE2) {
342			a2 = NULL;
343			PFRB_FOREACH(a, &b) {
344				a2 = pfr_buf_next(&b2, a2);
345				print_addrx(a2, a, opts & PF_OPT_USEDNS);
346			}
347		}
348		if (nmatch < b.pfrb_size)
349			rv = 2;
350	} else if (!strcmp(command, "zero")) {
351		if (argc || file != NULL)
352			usage();
353		flags |= PFR_FLAG_ADDRSTOO;
354		RVTEST(pfr_clr_tstats(&table, 1, &nzero, flags));
355		xprintf(opts, "%d table/stats cleared", nzero);
356	} else
357		warnx("pfctl_table: unknown command '%s'", command);
358	goto _cleanup;
359
360_error:
361	rv = -1;
362_cleanup:
363	pfr_buf_clear(&b);
364	pfr_buf_clear(&b2);
365	return (rv);
366}
367
368void
369print_table(struct pfr_table *ta, int verbose, int debug)
370{
371	if (!debug && !(ta->pfrt_flags & PFR_TFLAG_ACTIVE))
372		return;
373	if (verbose) {
374		printf("%c%c%c%c%c%c%c\t%s",
375		    (ta->pfrt_flags & PFR_TFLAG_CONST) ? 'c' : '-',
376		    (ta->pfrt_flags & PFR_TFLAG_PERSIST) ? 'p' : '-',
377		    (ta->pfrt_flags & PFR_TFLAG_ACTIVE) ? 'a' : '-',
378		    (ta->pfrt_flags & PFR_TFLAG_INACTIVE) ? 'i' : '-',
379		    (ta->pfrt_flags & PFR_TFLAG_REFERENCED) ? 'r' : '-',
380		    (ta->pfrt_flags & PFR_TFLAG_REFDANCHOR) ? 'h' : '-',
381		    (ta->pfrt_flags & PFR_TFLAG_COUNTERS) ? 'C' : '-',
382		    ta->pfrt_name);
383		if (ta->pfrt_anchor[0])
384			printf("\t%s", ta->pfrt_anchor);
385		puts("");
386	} else
387		puts(ta->pfrt_name);
388}
389
390void
391print_tstats(struct pfr_tstats *ts, int debug)
392{
393	time_t	time = ts->pfrts_tzero;
394	int	dir, op;
395
396	if (!debug && !(ts->pfrts_flags & PFR_TFLAG_ACTIVE))
397		return;
398	print_table(&ts->pfrts_t, 1, debug);
399	printf("\tAddresses:   %d\n", ts->pfrts_cnt);
400	printf("\tCleared:     %s", ctime(&time));
401	printf("\tReferences:  [ Anchors: %-18d Rules: %-18d ]\n",
402	    ts->pfrts_refcnt[PFR_REFCNT_ANCHOR],
403	    ts->pfrts_refcnt[PFR_REFCNT_RULE]);
404	printf("\tEvaluations: [ NoMatch: %-18llu Match: %-18llu ]\n",
405	    (unsigned long long)ts->pfrts_nomatch,
406	    (unsigned long long)ts->pfrts_match);
407	for (dir = 0; dir < PFR_DIR_MAX; dir++)
408		for (op = 0; op < PFR_OP_TABLE_MAX; op++)
409			printf("\t%-12s [ Packets: %-18llu Bytes: %-18llu ]\n",
410			    stats_text[dir][op],
411			    (unsigned long long)ts->pfrts_packets[dir][op],
412			    (unsigned long long)ts->pfrts_bytes[dir][op]);
413}
414
415int
416load_addr(struct pfr_buffer *b, int argc, char *argv[], char *file,
417    int nonetwork)
418{
419	while (argc--)
420		if (append_addr(b, *argv++, nonetwork)) {
421			if (errno)
422				warn("cannot decode %s", argv[-1]);
423			return (-1);
424		}
425	if (pfr_buf_load(b, file, nonetwork, append_addr)) {
426		warn("cannot load %s", file);
427		return (-1);
428	}
429	return (0);
430}
431
432void
433print_addrx(struct pfr_addr *ad, struct pfr_addr *rad, int dns)
434{
435	char		ch, buf[256] = "{error}";
436	char		fb[] = { ' ', 'M', 'A', 'D', 'C', 'Z', 'X', ' ', 'Y', ' ' };
437	unsigned int	fback, hostnet;
438
439	fback = (rad != NULL) ? rad->pfra_fback : ad->pfra_fback;
440	ch = (fback < sizeof(fb)/sizeof(*fb)) ? fb[fback] : '?';
441	hostnet = (ad->pfra_af == AF_INET6) ? 128 : 32;
442	inet_ntop(ad->pfra_af, &ad->pfra_u, buf, sizeof(buf));
443	printf("%c %c%s", ch, (ad->pfra_not?'!':' '), buf);
444	if (ad->pfra_net < hostnet)
445		printf("/%d", ad->pfra_net);
446	if (rad != NULL && fback != PFR_FB_NONE) {
447		if (strlcpy(buf, "{error}", sizeof(buf)) >= sizeof(buf))
448			errx(1, "print_addrx: strlcpy");
449		inet_ntop(rad->pfra_af, &rad->pfra_u, buf, sizeof(buf));
450		printf("\t%c%s", (rad->pfra_not?'!':' '), buf);
451		if (rad->pfra_net < hostnet)
452			printf("/%d", rad->pfra_net);
453	}
454	if (rad != NULL && fback == PFR_FB_NONE)
455		printf("\t nomatch");
456	if (dns && ad->pfra_net == hostnet) {
457		char host[NI_MAXHOST];
458		union sockaddr_union sa;
459
460		strlcpy(host, "?", sizeof(host));
461		bzero(&sa, sizeof(sa));
462		sa.sa.sa_family = ad->pfra_af;
463		if (sa.sa.sa_family == AF_INET) {
464			sa.sa.sa_len = sizeof(sa.sin);
465			sa.sin.sin_addr = ad->pfra_ip4addr;
466		} else {
467			sa.sa.sa_len = sizeof(sa.sin6);
468			sa.sin6.sin6_addr = ad->pfra_ip6addr;
469		}
470		if (getnameinfo(&sa.sa, sa.sa.sa_len, host, sizeof(host),
471		    NULL, 0, NI_NAMEREQD) == 0)
472			printf("\t(%s)", host);
473	}
474	printf("\n");
475}
476
477void
478print_astats(struct pfr_astats *as, int dns)
479{
480	time_t	time = as->pfras_tzero;
481	int	dir, op;
482
483	print_addrx(&as->pfras_a, NULL, dns);
484	printf("\tCleared:     %s", ctime(&time));
485 	if (as->pfras_a.pfra_fback == PFR_FB_NOCOUNT)
486		return;
487	for (dir = 0; dir < PFR_DIR_MAX; dir++)
488		for (op = 0; op < PFR_OP_ADDR_MAX; op++)
489			printf("\t%-12s [ Packets: %-18llu Bytes: %-18llu ]\n",
490			    stats_text[dir][op],
491			    (unsigned long long)as->pfras_packets[dir][op],
492			    (unsigned long long)as->pfras_bytes[dir][op]);
493}
494
495void
496radix_perror(void)
497{
498	extern char *__progname;
499	fprintf(stderr, "%s: %s.\n", __progname, pfr_strerror(errno));
500}
501
502int
503pfctl_define_table(char *name, int flags, int addrs, const char *anchor,
504    struct pfr_buffer *ab, u_int32_t ticket)
505{
506	struct pfr_table tbl;
507
508	bzero(&tbl, sizeof(tbl));
509	if (strlcpy(tbl.pfrt_name, name, sizeof(tbl.pfrt_name)) >=
510	    sizeof(tbl.pfrt_name) || strlcpy(tbl.pfrt_anchor, anchor,
511	    sizeof(tbl.pfrt_anchor)) >= sizeof(tbl.pfrt_anchor))
512		errx(1, "pfctl_define_table: strlcpy");
513	tbl.pfrt_flags = flags;
514
515	return pfr_ina_define(&tbl, ab->pfrb_caddr, ab->pfrb_size, NULL,
516	    NULL, ticket, addrs ? PFR_FLAG_ADDRSTOO : 0);
517}
518
519void
520warn_namespace_collision(const char *filter)
521{
522	struct pfr_buffer b;
523	struct pfr_table *t;
524	const char *name = NULL, *lastcoll;
525	int coll = 0;
526
527	bzero(&b, sizeof(b));
528	b.pfrb_type = PFRB_TABLES;
529	for (;;) {
530		pfr_buf_grow(&b, b.pfrb_size);
531		b.pfrb_size = b.pfrb_msize;
532		if (pfr_get_tables(NULL, b.pfrb_caddr,
533		    &b.pfrb_size, PFR_FLAG_ALLRSETS))
534			err(1, "pfr_get_tables");
535		if (b.pfrb_size <= b.pfrb_msize)
536			break;
537	}
538	PFRB_FOREACH(t, &b) {
539		if (!(t->pfrt_flags & PFR_TFLAG_ACTIVE))
540			continue;
541		if (filter != NULL && strcmp(filter, t->pfrt_name))
542			continue;
543		if (!t->pfrt_anchor[0])
544			name = t->pfrt_name;
545		else if (name != NULL && !strcmp(name, t->pfrt_name)) {
546			coll++;
547			lastcoll = name;
548			name = NULL;
549		}
550	}
551	if (coll == 1)
552		warnx("warning: namespace collision with <%s> global table.",
553		    lastcoll);
554	else if (coll > 1)
555		warnx("warning: namespace collisions with %d global tables.",
556		    coll);
557	pfr_buf_clear(&b);
558}
559
560void
561xprintf(int opts, const char *fmt, ...)
562{
563	va_list args;
564
565	if (opts & PF_OPT_QUIET)
566		return;
567
568	va_start(args, fmt);
569	vfprintf(stderr, fmt, args);
570	va_end(args);
571
572	if (opts & PF_OPT_DUMMYACTION)
573		fprintf(stderr, " (dummy).\n");
574	else if (opts & PF_OPT_NOACTION)
575		fprintf(stderr, " (syntax only).\n");
576	else
577		fprintf(stderr, ".\n");
578}
579
580
581/* interface stuff */
582
583int
584pfctl_show_ifaces(const char *filter, int opts)
585{
586	struct pfr_buffer	 b;
587	struct pfi_kif		*p;
588	int			 i = 0;
589
590	bzero(&b, sizeof(b));
591	b.pfrb_type = PFRB_IFACES;
592	for (;;) {
593		pfr_buf_grow(&b, b.pfrb_size);
594		b.pfrb_size = b.pfrb_msize;
595		if (pfi_get_ifaces(filter, b.pfrb_caddr, &b.pfrb_size)) {
596			radix_perror();
597			return (1);
598		}
599		if (b.pfrb_size <= b.pfrb_msize)
600			break;
601		i++;
602	}
603	if (opts & PF_OPT_SHOWALL)
604		pfctl_print_title("INTERFACES:");
605	PFRB_FOREACH(p, &b)
606		print_iface(p, opts);
607	return (0);
608}
609
610void
611print_iface(struct pfi_kif *p, int opts)
612{
613	time_t	tzero = p->pfik_tzero;
614	int	i, af, dir, act;
615
616	printf("%s", p->pfik_name);
617	if (opts & PF_OPT_VERBOSE) {
618		if (p->pfik_flags & PFI_IFLAG_SKIP)
619			printf(" (skip)");
620	}
621	printf("\n");
622
623	if (!(opts & PF_OPT_VERBOSE2))
624		return;
625	printf("\tCleared:     %s", ctime(&tzero));
626	printf("\tReferences:  %-18d\n", p->pfik_rulerefs);
627	for (i = 0; i < 8; i++) {
628		af = (i>>2) & 1;
629		dir = (i>>1) &1;
630		act = i & 1;
631		printf("\t%-12s [ Packets: %-18llu Bytes: %-18llu ]\n",
632		    istats_text[af][dir][act],
633		    (unsigned long long)p->pfik_packets[af][dir][act],
634		    (unsigned long long)p->pfik_bytes[af][dir][act]);
635	}
636}
637