pfctl_table.c revision 0ccf4838d7a8b4da2c3beaac7ea1fd977aa0ed11
1/*	$OpenBSD: pfctl_table.c,v 1.67 2008/06/10 20:55:02 mcbride Exp $ */
2
3/*
4 * Copyright (c) 2002 Cedric Berger
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 *    - Redistributions of source code must retain the above copyright
12 *      notice, this list of conditions and the following disclaimer.
13 *    - Redistributions in binary form must reproduce the above
14 *      copyright notice, this list of conditions and the following
15 *      disclaimer in the documentation and/or other materials provided
16 *      with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD$");
35
36#include <sys/types.h>
37#include <sys/ioctl.h>
38#include <sys/socket.h>
39
40#include <net/if.h>
41#include <net/pfvar.h>
42#include <arpa/inet.h>
43
44#include <ctype.h>
45#include <err.h>
46#include <errno.h>
47#include <netdb.h>
48#include <stdarg.h>
49#include <stdio.h>
50#include <stdlib.h>
51#include <string.h>
52#include <time.h>
53
54#include "pfctl_parser.h"
55#include "pfctl.h"
56
57extern void	usage(void);
58static int	pfctl_table(int, char *[], char *, const char *, char *,
59		    const char *, int);
60static void	print_table(struct pfr_table *, int, int);
61static void	print_tstats(struct pfr_tstats *, int);
62static int	load_addr(struct pfr_buffer *, int, char *[], char *, int);
63static void	print_addrx(struct pfr_addr *, struct pfr_addr *, int);
64static void	print_astats(struct pfr_astats *, int);
65static void	radix_perror(void);
66static void	xprintf(int, const char *, ...);
67static void	print_iface(struct pfi_kif *, int);
68
69static const char	*stats_text[PFR_DIR_MAX][PFR_OP_TABLE_MAX] = {
70	{ "In/Block:",	"In/Pass:",	"In/XPass:" },
71	{ "Out/Block:",	"Out/Pass:",	"Out/XPass:" }
72};
73
74static const char	*istats_text[2][2][2] = {
75	{ { "In4/Pass:", "In4/Block:" }, { "Out4/Pass:", "Out4/Block:" } },
76	{ { "In6/Pass:", "In6/Block:" }, { "Out6/Pass:", "Out6/Block:" } }
77};
78
79#define RVTEST(fct) do {				\
80		if ((!(opts & PF_OPT_NOACTION) ||	\
81		    (opts & PF_OPT_DUMMYACTION)) &&	\
82		    (fct)) {				\
83			radix_perror();			\
84			goto _error;			\
85		}					\
86	} while (0)
87
88#define CREATE_TABLE do {						\
89		table.pfrt_flags |= PFR_TFLAG_PERSIST;			\
90		if ((!(opts & PF_OPT_NOACTION) ||			\
91		    (opts & PF_OPT_DUMMYACTION)) &&			\
92		    (pfr_add_tables(&table, 1, &nadd, flags)) &&	\
93		    (errno != EPERM)) {					\
94			radix_perror();					\
95			goto _error;					\
96		}							\
97		if (nadd) {						\
98			warn_namespace_collision(table.pfrt_name);	\
99			xprintf(opts, "%d table created", nadd);	\
100			if (opts & PF_OPT_NOACTION)			\
101				return (0);				\
102		}							\
103		table.pfrt_flags &= ~PFR_TFLAG_PERSIST;			\
104	} while(0)
105
106int
107pfctl_clear_tables(const char *anchor, int opts)
108{
109	return pfctl_table(0, NULL, NULL, "-F", NULL, anchor, opts);
110}
111
112int
113pfctl_show_tables(const char *anchor, int opts)
114{
115	return pfctl_table(0, NULL, NULL, "-s", NULL, anchor, opts);
116}
117
118int
119pfctl_command_tables(int argc, char *argv[], char *tname,
120    const char *command, char *file, const char *anchor, int opts)
121{
122	if (tname == NULL || command == NULL)
123		usage();
124	return pfctl_table(argc, argv, tname, command, file, anchor, opts);
125}
126
127int
128pfctl_table(int argc, char *argv[], char *tname, const char *command,
129    char *file, const char *anchor, int opts)
130{
131	struct pfr_table	 table;
132	struct pfr_buffer	 b, b2;
133	struct pfr_addr		*a, *a2;
134	int			 nadd = 0, ndel = 0, nchange = 0, nzero = 0;
135	int			 rv = 0, flags = 0, nmatch = 0;
136	void			*p;
137
138	if (command == NULL)
139		usage();
140	if (opts & PF_OPT_NOACTION)
141		flags |= PFR_FLAG_DUMMY;
142
143	bzero(&b, sizeof(b));
144	bzero(&b2, sizeof(b2));
145	bzero(&table, sizeof(table));
146	if (tname != NULL) {
147		if (strlen(tname) >= PF_TABLE_NAME_SIZE)
148			usage();
149		if (strlcpy(table.pfrt_name, tname,
150		    sizeof(table.pfrt_name)) >= sizeof(table.pfrt_name))
151			errx(1, "pfctl_table: strlcpy");
152	}
153	if (strlcpy(table.pfrt_anchor, anchor,
154	    sizeof(table.pfrt_anchor)) >= sizeof(table.pfrt_anchor))
155		errx(1, "pfctl_table: strlcpy");
156
157	if (!strcmp(command, "-F")) {
158		if (argc || file != NULL)
159			usage();
160		RVTEST(pfr_clr_tables(&table, &ndel, flags));
161		xprintf(opts, "%d tables deleted", ndel);
162	} else if (!strcmp(command, "-s")) {
163		b.pfrb_type = (opts & PF_OPT_VERBOSE2) ?
164		    PFRB_TSTATS : PFRB_TABLES;
165		if (argc || file != NULL)
166			usage();
167		for (;;) {
168			pfr_buf_grow(&b, b.pfrb_size);
169			b.pfrb_size = b.pfrb_msize;
170			if (opts & PF_OPT_VERBOSE2)
171				RVTEST(pfr_get_tstats(&table,
172				    b.pfrb_caddr, &b.pfrb_size, flags));
173			else
174				RVTEST(pfr_get_tables(&table,
175				    b.pfrb_caddr, &b.pfrb_size, flags));
176			if (b.pfrb_size <= b.pfrb_msize)
177				break;
178		}
179
180		if ((opts & PF_OPT_SHOWALL) && b.pfrb_size > 0)
181			pfctl_print_title("TABLES:");
182
183		PFRB_FOREACH(p, &b)
184			if (opts & PF_OPT_VERBOSE2)
185				print_tstats(p, opts & PF_OPT_DEBUG);
186			else
187				print_table(p, opts & PF_OPT_VERBOSE,
188				    opts & PF_OPT_DEBUG);
189	} else if (!strcmp(command, "kill")) {
190		if (argc || file != NULL)
191			usage();
192		RVTEST(pfr_del_tables(&table, 1, &ndel, flags));
193		xprintf(opts, "%d table deleted", ndel);
194	} else if (!strcmp(command, "flush")) {
195		if (argc || file != NULL)
196			usage();
197		RVTEST(pfr_clr_addrs(&table, &ndel, flags));
198		xprintf(opts, "%d addresses deleted", ndel);
199	} else if (!strcmp(command, "add")) {
200		b.pfrb_type = PFRB_ADDRS;
201		if (load_addr(&b, argc, argv, file, 0))
202			goto _error;
203		CREATE_TABLE;
204		if (opts & PF_OPT_VERBOSE)
205			flags |= PFR_FLAG_FEEDBACK;
206		RVTEST(pfr_add_addrs(&table, b.pfrb_caddr, b.pfrb_size,
207		    &nadd, flags));
208		xprintf(opts, "%d/%d addresses added", nadd, b.pfrb_size);
209		if (opts & PF_OPT_VERBOSE)
210			PFRB_FOREACH(a, &b)
211				if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
212					print_addrx(a, NULL,
213					    opts & PF_OPT_USEDNS);
214	} else if (!strcmp(command, "delete")) {
215		b.pfrb_type = PFRB_ADDRS;
216		if (load_addr(&b, argc, argv, file, 0))
217			goto _error;
218		if (opts & PF_OPT_VERBOSE)
219			flags |= PFR_FLAG_FEEDBACK;
220		RVTEST(pfr_del_addrs(&table, b.pfrb_caddr, b.pfrb_size,
221		    &ndel, flags));
222		xprintf(opts, "%d/%d addresses deleted", ndel, b.pfrb_size);
223		if (opts & PF_OPT_VERBOSE)
224			PFRB_FOREACH(a, &b)
225				if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
226					print_addrx(a, NULL,
227					    opts & PF_OPT_USEDNS);
228	} else if (!strcmp(command, "replace")) {
229		b.pfrb_type = PFRB_ADDRS;
230		if (load_addr(&b, argc, argv, file, 0))
231			goto _error;
232		CREATE_TABLE;
233		if (opts & PF_OPT_VERBOSE)
234			flags |= PFR_FLAG_FEEDBACK;
235		for (;;) {
236			int sz2 = b.pfrb_msize;
237
238			RVTEST(pfr_set_addrs(&table, b.pfrb_caddr, b.pfrb_size,
239			    &sz2, &nadd, &ndel, &nchange, flags));
240			if (sz2 <= b.pfrb_msize) {
241				b.pfrb_size = sz2;
242				break;
243			} else
244				pfr_buf_grow(&b, sz2);
245		}
246		if (nadd)
247			xprintf(opts, "%d addresses added", nadd);
248		if (ndel)
249			xprintf(opts, "%d addresses deleted", ndel);
250		if (nchange)
251			xprintf(opts, "%d addresses changed", nchange);
252		if (!nadd && !ndel && !nchange)
253			xprintf(opts, "no changes");
254		if (opts & PF_OPT_VERBOSE)
255			PFRB_FOREACH(a, &b)
256				if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
257					print_addrx(a, NULL,
258					    opts & PF_OPT_USEDNS);
259	} else if (!strcmp(command, "expire")) {
260		const char		*errstr;
261		u_int			 lifetime;
262
263		b.pfrb_type = PFRB_ASTATS;
264		b2.pfrb_type = PFRB_ADDRS;
265		if (argc != 1 || file != NULL)
266			usage();
267		lifetime = strtonum(*argv, 0, UINT_MAX, &errstr);
268		if (errstr)
269			errx(1, "expiry time: %s", errstr);
270		for (;;) {
271			pfr_buf_grow(&b, b.pfrb_size);
272			b.pfrb_size = b.pfrb_msize;
273			RVTEST(pfr_get_astats(&table, b.pfrb_caddr,
274			    &b.pfrb_size, flags));
275			if (b.pfrb_size <= b.pfrb_msize)
276				break;
277		}
278		PFRB_FOREACH(p, &b) {
279			((struct pfr_astats *)p)->pfras_a.pfra_fback = 0;
280			if (time(NULL) - ((struct pfr_astats *)p)->pfras_tzero >
281			    lifetime)
282				if (pfr_buf_add(&b2,
283				    &((struct pfr_astats *)p)->pfras_a))
284					err(1, "duplicate buffer");
285		}
286
287		if (opts & PF_OPT_VERBOSE)
288			flags |= PFR_FLAG_FEEDBACK;
289		RVTEST(pfr_del_addrs(&table, b2.pfrb_caddr, b2.pfrb_size,
290		    &ndel, flags));
291		xprintf(opts, "%d/%d addresses expired", ndel, b2.pfrb_size);
292		if (opts & PF_OPT_VERBOSE)
293			PFRB_FOREACH(a, &b2)
294				if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
295					print_addrx(a, NULL,
296					    opts & PF_OPT_USEDNS);
297	} else if (!strcmp(command, "show")) {
298		b.pfrb_type = (opts & PF_OPT_VERBOSE) ?
299			PFRB_ASTATS : PFRB_ADDRS;
300		if (argc || file != NULL)
301			usage();
302		for (;;) {
303			pfr_buf_grow(&b, b.pfrb_size);
304			b.pfrb_size = b.pfrb_msize;
305			if (opts & PF_OPT_VERBOSE)
306				RVTEST(pfr_get_astats(&table, b.pfrb_caddr,
307				    &b.pfrb_size, flags));
308			else
309				RVTEST(pfr_get_addrs(&table, b.pfrb_caddr,
310				    &b.pfrb_size, flags));
311			if (b.pfrb_size <= b.pfrb_msize)
312				break;
313		}
314		PFRB_FOREACH(p, &b)
315			if (opts & PF_OPT_VERBOSE)
316				print_astats(p, opts & PF_OPT_USEDNS);
317			else
318				print_addrx(p, NULL, opts & PF_OPT_USEDNS);
319	} else if (!strcmp(command, "test")) {
320		b.pfrb_type = PFRB_ADDRS;
321		b2.pfrb_type = PFRB_ADDRS;
322
323		if (load_addr(&b, argc, argv, file, 1))
324			goto _error;
325		if (opts & PF_OPT_VERBOSE2) {
326			flags |= PFR_FLAG_REPLACE;
327			PFRB_FOREACH(a, &b)
328				if (pfr_buf_add(&b2, a))
329					err(1, "duplicate buffer");
330		}
331		RVTEST(pfr_tst_addrs(&table, b.pfrb_caddr, b.pfrb_size,
332		    &nmatch, flags));
333		xprintf(opts, "%d/%d addresses match", nmatch, b.pfrb_size);
334		if ((opts & PF_OPT_VERBOSE) && !(opts & PF_OPT_VERBOSE2))
335			PFRB_FOREACH(a, &b)
336				if (a->pfra_fback == PFR_FB_MATCH)
337					print_addrx(a, NULL,
338					    opts & PF_OPT_USEDNS);
339		if (opts & PF_OPT_VERBOSE2) {
340			a2 = NULL;
341			PFRB_FOREACH(a, &b) {
342				a2 = pfr_buf_next(&b2, a2);
343				print_addrx(a2, a, opts & PF_OPT_USEDNS);
344			}
345		}
346		if (nmatch < b.pfrb_size)
347			rv = 2;
348	} else if (!strcmp(command, "zero")) {
349		if (argc || file != NULL)
350			usage();
351		flags |= PFR_FLAG_ADDRSTOO;
352		RVTEST(pfr_clr_tstats(&table, 1, &nzero, flags));
353		xprintf(opts, "%d table/stats cleared", nzero);
354	} else
355		warnx("pfctl_table: unknown command '%s'", command);
356	goto _cleanup;
357
358_error:
359	rv = -1;
360_cleanup:
361	pfr_buf_clear(&b);
362	pfr_buf_clear(&b2);
363	return (rv);
364}
365
366void
367print_table(struct pfr_table *ta, int verbose, int debug)
368{
369	if (!debug && !(ta->pfrt_flags & PFR_TFLAG_ACTIVE))
370		return;
371	if (verbose) {
372		printf("%c%c%c%c%c%c%c\t%s",
373		    (ta->pfrt_flags & PFR_TFLAG_CONST) ? 'c' : '-',
374		    (ta->pfrt_flags & PFR_TFLAG_PERSIST) ? 'p' : '-',
375		    (ta->pfrt_flags & PFR_TFLAG_ACTIVE) ? 'a' : '-',
376		    (ta->pfrt_flags & PFR_TFLAG_INACTIVE) ? 'i' : '-',
377		    (ta->pfrt_flags & PFR_TFLAG_REFERENCED) ? 'r' : '-',
378		    (ta->pfrt_flags & PFR_TFLAG_REFDANCHOR) ? 'h' : '-',
379		    (ta->pfrt_flags & PFR_TFLAG_COUNTERS) ? 'C' : '-',
380		    ta->pfrt_name);
381		if (ta->pfrt_anchor[0])
382			printf("\t%s", ta->pfrt_anchor);
383		puts("");
384	} else
385		puts(ta->pfrt_name);
386}
387
388void
389print_tstats(struct pfr_tstats *ts, int debug)
390{
391	time_t	time = ts->pfrts_tzero;
392	int	dir, op;
393
394	if (!debug && !(ts->pfrts_flags & PFR_TFLAG_ACTIVE))
395		return;
396	print_table(&ts->pfrts_t, 1, debug);
397	printf("\tAddresses:   %d\n", ts->pfrts_cnt);
398	printf("\tCleared:     %s", ctime(&time));
399	printf("\tReferences:  [ Anchors: %-18d Rules: %-18d ]\n",
400	    ts->pfrts_refcnt[PFR_REFCNT_ANCHOR],
401	    ts->pfrts_refcnt[PFR_REFCNT_RULE]);
402	printf("\tEvaluations: [ NoMatch: %-18llu Match: %-18llu ]\n",
403	    (unsigned long long)ts->pfrts_nomatch,
404	    (unsigned long long)ts->pfrts_match);
405	for (dir = 0; dir < PFR_DIR_MAX; dir++)
406		for (op = 0; op < PFR_OP_TABLE_MAX; op++)
407			printf("\t%-12s [ Packets: %-18llu Bytes: %-18llu ]\n",
408			    stats_text[dir][op],
409			    (unsigned long long)ts->pfrts_packets[dir][op],
410			    (unsigned long long)ts->pfrts_bytes[dir][op]);
411}
412
413int
414load_addr(struct pfr_buffer *b, int argc, char *argv[], char *file,
415    int nonetwork)
416{
417	while (argc--)
418		if (append_addr(b, *argv++, nonetwork)) {
419			if (errno)
420				warn("cannot decode %s", argv[-1]);
421			return (-1);
422		}
423	if (pfr_buf_load(b, file, nonetwork, append_addr)) {
424		warn("cannot load %s", file);
425		return (-1);
426	}
427	return (0);
428}
429
430void
431print_addrx(struct pfr_addr *ad, struct pfr_addr *rad, int dns)
432{
433	char		ch, buf[256] = "{error}";
434	char		fb[] = { ' ', 'M', 'A', 'D', 'C', 'Z', 'X', ' ', 'Y', ' ' };
435	unsigned int	fback, hostnet;
436
437	fback = (rad != NULL) ? rad->pfra_fback : ad->pfra_fback;
438	ch = (fback < sizeof(fb)/sizeof(*fb)) ? fb[fback] : '?';
439	hostnet = (ad->pfra_af == AF_INET6) ? 128 : 32;
440	inet_ntop(ad->pfra_af, &ad->pfra_u, buf, sizeof(buf));
441	printf("%c %c%s", ch, (ad->pfra_not?'!':' '), buf);
442	if (ad->pfra_net < hostnet)
443		printf("/%d", ad->pfra_net);
444	if (rad != NULL && fback != PFR_FB_NONE) {
445		if (strlcpy(buf, "{error}", sizeof(buf)) >= sizeof(buf))
446			errx(1, "print_addrx: strlcpy");
447		inet_ntop(rad->pfra_af, &rad->pfra_u, buf, sizeof(buf));
448		printf("\t%c%s", (rad->pfra_not?'!':' '), buf);
449		if (rad->pfra_net < hostnet)
450			printf("/%d", rad->pfra_net);
451	}
452	if (rad != NULL && fback == PFR_FB_NONE)
453		printf("\t nomatch");
454	if (dns && ad->pfra_net == hostnet) {
455		char host[NI_MAXHOST];
456		union sockaddr_union sa;
457
458		strlcpy(host, "?", sizeof(host));
459		bzero(&sa, sizeof(sa));
460		sa.sa.sa_family = ad->pfra_af;
461		if (sa.sa.sa_family == AF_INET) {
462			sa.sa.sa_len = sizeof(sa.sin);
463			sa.sin.sin_addr = ad->pfra_ip4addr;
464		} else {
465			sa.sa.sa_len = sizeof(sa.sin6);
466			sa.sin6.sin6_addr = ad->pfra_ip6addr;
467		}
468		if (getnameinfo(&sa.sa, sa.sa.sa_len, host, sizeof(host),
469		    NULL, 0, NI_NAMEREQD) == 0)
470			printf("\t(%s)", host);
471	}
472	printf("\n");
473}
474
475void
476print_astats(struct pfr_astats *as, int dns)
477{
478	time_t	time = as->pfras_tzero;
479	int	dir, op;
480
481	print_addrx(&as->pfras_a, NULL, dns);
482	printf("\tCleared:     %s", ctime(&time));
483 	if (as->pfras_a.pfra_fback == PFR_FB_NOCOUNT)
484		return;
485	for (dir = 0; dir < PFR_DIR_MAX; dir++)
486		for (op = 0; op < PFR_OP_ADDR_MAX; op++)
487			printf("\t%-12s [ Packets: %-18llu Bytes: %-18llu ]\n",
488			    stats_text[dir][op],
489			    (unsigned long long)as->pfras_packets[dir][op],
490			    (unsigned long long)as->pfras_bytes[dir][op]);
491}
492
493void
494radix_perror(void)
495{
496	extern char *__progname;
497	fprintf(stderr, "%s: %s.\n", __progname, pfr_strerror(errno));
498}
499
500int
501pfctl_define_table(char *name, int flags, int addrs, const char *anchor,
502    struct pfr_buffer *ab, u_int32_t ticket)
503{
504	struct pfr_table tbl;
505
506	bzero(&tbl, sizeof(tbl));
507	if (strlcpy(tbl.pfrt_name, name, sizeof(tbl.pfrt_name)) >=
508	    sizeof(tbl.pfrt_name) || strlcpy(tbl.pfrt_anchor, anchor,
509	    sizeof(tbl.pfrt_anchor)) >= sizeof(tbl.pfrt_anchor))
510		errx(1, "pfctl_define_table: strlcpy");
511	tbl.pfrt_flags = flags;
512
513	return pfr_ina_define(&tbl, ab->pfrb_caddr, ab->pfrb_size, NULL,
514	    NULL, ticket, addrs ? PFR_FLAG_ADDRSTOO : 0);
515}
516
517void
518warn_namespace_collision(const char *filter)
519{
520	struct pfr_buffer b;
521	struct pfr_table *t;
522	const char *name = NULL, *lastcoll;
523	int coll = 0;
524
525	bzero(&b, sizeof(b));
526	b.pfrb_type = PFRB_TABLES;
527	for (;;) {
528		pfr_buf_grow(&b, b.pfrb_size);
529		b.pfrb_size = b.pfrb_msize;
530		if (pfr_get_tables(NULL, b.pfrb_caddr,
531		    &b.pfrb_size, PFR_FLAG_ALLRSETS))
532			err(1, "pfr_get_tables");
533		if (b.pfrb_size <= b.pfrb_msize)
534			break;
535	}
536	PFRB_FOREACH(t, &b) {
537		if (!(t->pfrt_flags & PFR_TFLAG_ACTIVE))
538			continue;
539		if (filter != NULL && strcmp(filter, t->pfrt_name))
540			continue;
541		if (!t->pfrt_anchor[0])
542			name = t->pfrt_name;
543		else if (name != NULL && !strcmp(name, t->pfrt_name)) {
544			coll++;
545			lastcoll = name;
546			name = NULL;
547		}
548	}
549	if (coll == 1)
550		warnx("warning: namespace collision with <%s> global table.",
551		    lastcoll);
552	else if (coll > 1)
553		warnx("warning: namespace collisions with %d global tables.",
554		    coll);
555	pfr_buf_clear(&b);
556}
557
558void
559xprintf(int opts, const char *fmt, ...)
560{
561	va_list args;
562
563	if (opts & PF_OPT_QUIET)
564		return;
565
566	va_start(args, fmt);
567	vfprintf(stderr, fmt, args);
568	va_end(args);
569
570	if (opts & PF_OPT_DUMMYACTION)
571		fprintf(stderr, " (dummy).\n");
572	else if (opts & PF_OPT_NOACTION)
573		fprintf(stderr, " (syntax only).\n");
574	else
575		fprintf(stderr, ".\n");
576}
577
578
579/* interface stuff */
580
581int
582pfctl_show_ifaces(const char *filter, int opts)
583{
584	struct pfr_buffer	 b;
585	struct pfi_kif		*p;
586	int			 i = 0;
587
588	bzero(&b, sizeof(b));
589	b.pfrb_type = PFRB_IFACES;
590	for (;;) {
591		pfr_buf_grow(&b, b.pfrb_size);
592		b.pfrb_size = b.pfrb_msize;
593		if (pfi_get_ifaces(filter, b.pfrb_caddr, &b.pfrb_size)) {
594			radix_perror();
595			return (1);
596		}
597		if (b.pfrb_size <= b.pfrb_msize)
598			break;
599		i++;
600	}
601	if (opts & PF_OPT_SHOWALL)
602		pfctl_print_title("INTERFACES:");
603	PFRB_FOREACH(p, &b)
604		print_iface(p, opts);
605	return (0);
606}
607
608void
609print_iface(struct pfi_kif *p, int opts)
610{
611	time_t	tzero = p->pfik_tzero;
612	int	i, af, dir, act;
613
614	printf("%s", p->pfik_name);
615	if (opts & PF_OPT_VERBOSE) {
616		if (p->pfik_flags & PFI_IFLAG_SKIP)
617			printf(" (skip)");
618	}
619	printf("\n");
620
621	if (!(opts & PF_OPT_VERBOSE2))
622		return;
623	printf("\tCleared:     %s", ctime(&tzero));
624	printf("\tReferences:  %-18d\n", p->pfik_rulerefs);
625	for (i = 0; i < 8; i++) {
626		af = (i>>2) & 1;
627		dir = (i>>1) &1;
628		act = i & 1;
629		printf("\t%-12s [ Packets: %-18llu Bytes: %-18llu ]\n",
630		    istats_text[af][dir][act],
631		    (unsigned long long)p->pfik_packets[af][dir][act],
632		    (unsigned long long)p->pfik_bytes[af][dir][act]);
633	}
634}
635