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pfctl_table.c revision 1.4
      1 /*	$NetBSD: pfctl_table.c,v 1.4 2004/11/14 11:26:48 yamt Exp $	*/
      2 /*	$OpenBSD: pfctl_table.c,v 1.61 2004/06/12 22:22:44 cedric Exp $ */
      3 
      4 /*
      5  * Copyright (c) 2002 Cedric Berger
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  *
     12  *    - Redistributions of source code must retain the above copyright
     13  *      notice, this list of conditions and the following disclaimer.
     14  *    - Redistributions in binary form must reproduce the above
     15  *      copyright notice, this list of conditions and the following
     16  *      disclaimer in the documentation and/or other materials provided
     17  *      with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     22  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
     23  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     25  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     26  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
     27  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     29  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     30  * POSSIBILITY OF SUCH DAMAGE.
     31  *
     32  */
     33 
     34 #include <sys/types.h>
     35 #include <sys/ioctl.h>
     36 #include <sys/socket.h>
     37 
     38 #ifdef __NetBSD__
     39 #include <netinet/in.h>
     40 #endif
     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 
     59 extern void	usage(void);
     60 static int	pfctl_table(int, char *[], char *, const char *, char *,
     61 		    const char *, int);
     62 static void	print_table(struct pfr_table *, int, int);
     63 static void	print_tstats(struct pfr_tstats *, int);
     64 static int	load_addr(struct pfr_buffer *, int, char *[], char *, int);
     65 static void	print_addrx(struct pfr_addr *, struct pfr_addr *, int);
     66 static void	print_astats(struct pfr_astats *, int);
     67 static void	radix_perror(void);
     68 static void	xprintf(int, const char *, ...);
     69 static void	print_iface(struct pfi_if *, int);
     70 static void	oprintf(int, int, const char *, int *, int);
     71 
     72 static const char	*stats_text[PFR_DIR_MAX][PFR_OP_TABLE_MAX] = {
     73 	{ "In/Block:",	"In/Pass:",	"In/XPass:" },
     74 	{ "Out/Block:",	"Out/Pass:",	"Out/XPass:" }
     75 };
     76 
     77 static const char	*istats_text[2][2][2] = {
     78 	{ { "In4/Pass:", "In4/Block:" }, { "Out4/Pass:", "Out4/Block:" } },
     79 	{ { "In6/Pass:", "In6/Block:" }, { "Out6/Pass:", "Out6/Block:" } }
     80 };
     81 
     82 #define RVTEST(fct) do {				\
     83 		if ((!(opts & PF_OPT_NOACTION) ||	\
     84 		    (opts & PF_OPT_DUMMYACTION)) &&	\
     85 		    (fct)) {				\
     86 			radix_perror();			\
     87 			goto _error;			\
     88 		}					\
     89 	} while (0)
     90 
     91 #define CREATE_TABLE do {						\
     92 		table.pfrt_flags |= PFR_TFLAG_PERSIST;			\
     93 		if ((!(opts & PF_OPT_NOACTION) ||			\
     94 		    (opts & PF_OPT_DUMMYACTION)) &&			\
     95 		    (pfr_add_tables(&table, 1, &nadd, flags)) &&	\
     96 		    (errno != EPERM)) {					\
     97 			radix_perror();					\
     98 			goto _error;					\
     99 		}							\
    100 		if (nadd) {						\
    101 			warn_namespace_collision(table.pfrt_name);	\
    102 			xprintf(opts, "%d table created", nadd);	\
    103 			if (opts & PF_OPT_NOACTION)			\
    104 				return (0);				\
    105 		}							\
    106 		table.pfrt_flags &= ~PFR_TFLAG_PERSIST;			\
    107 	} while(0)
    108 
    109 int
    110 pfctl_clear_tables(const char *anchor, int opts)
    111 {
    112 	return pfctl_table(0, NULL, NULL, "-F", NULL, anchor, opts);
    113 }
    114 
    115 int
    116 pfctl_show_tables(const char *anchor, int opts)
    117 {
    118 	return pfctl_table(0, NULL, NULL, "-s", NULL, anchor, opts);
    119 }
    120 
    121 int
    122 pfctl_command_tables(int argc, char *argv[], char *tname,
    123     const char *command, char *file, const char *anchor, int opts)
    124 {
    125 	if (tname == NULL || command == NULL)
    126 		usage();
    127 	return pfctl_table(argc, argv, tname, command, file, anchor, opts);
    128 }
    129 
    130 int
    131 pfctl_table(int argc, char *argv[], char *tname, const char *command,
    132     char *file, const char *anchor, int opts)
    133 {
    134 	struct pfr_table	 table;
    135 	struct pfr_buffer	 b, b2;
    136 	struct pfr_addr		*a, *a2;
    137 	int			 nadd = 0, ndel = 0, nchange = 0, nzero = 0;
    138 	int			 rv = 0, flags = 0, nmatch = 0;
    139 	void			*p;
    140 
    141 	if (command == NULL)
    142 		usage();
    143 	if (opts & PF_OPT_NOACTION)
    144 		flags |= PFR_FLAG_DUMMY;
    145 
    146 	bzero(&b, sizeof(b));
    147 	bzero(&b2, sizeof(b2));
    148 	bzero(&table, sizeof(table));
    149 	if (tname != NULL) {
    150 		if (strlen(tname) >= PF_TABLE_NAME_SIZE)
    151 			usage();
    152 		if (strlcpy(table.pfrt_name, tname,
    153 		    sizeof(table.pfrt_name)) >= sizeof(table.pfrt_name))
    154 			errx(1, "pfctl_table: strlcpy");
    155 	}
    156 	if (strlcpy(table.pfrt_anchor, anchor,
    157 	    sizeof(table.pfrt_anchor)) >= sizeof(table.pfrt_anchor))
    158 		errx(1, "pfctl_table: strlcpy");
    159 
    160 	if (!strcmp(command, "-F")) {
    161 		if (argc || file != NULL)
    162 			usage();
    163 		RVTEST(pfr_clr_tables(&table, &ndel, flags));
    164 		xprintf(opts, "%d tables deleted", ndel);
    165 	} else if (!strcmp(command, "-s")) {
    166 		b.pfrb_type = (opts & PF_OPT_VERBOSE2) ?
    167 		    PFRB_TSTATS : PFRB_TABLES;
    168 		if (argc || file != NULL)
    169 			usage();
    170 		for (;;) {
    171 			pfr_buf_grow(&b, b.pfrb_size);
    172 			b.pfrb_size = b.pfrb_msize;
    173 			if (opts & PF_OPT_VERBOSE2)
    174 				RVTEST(pfr_get_tstats(&table,
    175 				    b.pfrb_caddr, &b.pfrb_size, flags));
    176 			else
    177 				RVTEST(pfr_get_tables(&table,
    178 				    b.pfrb_caddr, &b.pfrb_size, flags));
    179 			if (b.pfrb_size <= b.pfrb_msize)
    180 				break;
    181 		}
    182 
    183 		if (opts & PF_OPT_SHOWALL && b.pfrb_size > 0)
    184 			pfctl_print_title("TABLES:");
    185 
    186 		PFRB_FOREACH(p, &b)
    187 			if (opts & PF_OPT_VERBOSE2)
    188 				print_tstats(p, opts & PF_OPT_DEBUG);
    189 			else
    190 				print_table(p, opts & PF_OPT_VERBOSE,
    191 				    opts & PF_OPT_DEBUG);
    192 	} else if (!strcmp(command, "kill")) {
    193 		if (argc || file != NULL)
    194 			usage();
    195 		RVTEST(pfr_del_tables(&table, 1, &ndel, flags));
    196 		xprintf(opts, "%d table deleted", ndel);
    197 	} else if (!strcmp(command, "flush")) {
    198 		if (argc || file != NULL)
    199 			usage();
    200 		RVTEST(pfr_clr_addrs(&table, &ndel, flags));
    201 		xprintf(opts, "%d addresses deleted", ndel);
    202 	} else if (!strcmp(command, "add")) {
    203 		b.pfrb_type = PFRB_ADDRS;
    204 		if (load_addr(&b, argc, argv, file, 0))
    205 			goto _error;
    206 		CREATE_TABLE;
    207 		if (opts & PF_OPT_VERBOSE)
    208 			flags |= PFR_FLAG_FEEDBACK;
    209 		RVTEST(pfr_add_addrs(&table, b.pfrb_caddr, b.pfrb_size,
    210 		    &nadd, flags));
    211 		xprintf(opts, "%d/%d addresses added", nadd, b.pfrb_size);
    212 		if (opts & PF_OPT_VERBOSE)
    213 			PFRB_FOREACH(a, &b)
    214 				if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
    215 					print_addrx(a, NULL,
    216 					    opts & PF_OPT_USEDNS);
    217 	} else if (!strcmp(command, "delete")) {
    218 		b.pfrb_type = PFRB_ADDRS;
    219 		if (load_addr(&b, argc, argv, file, 0))
    220 			goto _error;
    221 		if (opts & PF_OPT_VERBOSE)
    222 			flags |= PFR_FLAG_FEEDBACK;
    223 		RVTEST(pfr_del_addrs(&table, b.pfrb_caddr, b.pfrb_size,
    224 		    &ndel, flags));
    225 		xprintf(opts, "%d/%d addresses deleted", ndel, b.pfrb_size);
    226 		if (opts & PF_OPT_VERBOSE)
    227 			PFRB_FOREACH(a, &b)
    228 				if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
    229 					print_addrx(a, NULL,
    230 					    opts & PF_OPT_USEDNS);
    231 	} else if (!strcmp(command, "replace")) {
    232 		b.pfrb_type = PFRB_ADDRS;
    233 		if (load_addr(&b, argc, argv, file, 0))
    234 			goto _error;
    235 		CREATE_TABLE;
    236 		if (opts & PF_OPT_VERBOSE)
    237 			flags |= PFR_FLAG_FEEDBACK;
    238 		for (;;) {
    239 			int sz2 = b.pfrb_msize;
    240 
    241 			RVTEST(pfr_set_addrs(&table, b.pfrb_caddr, b.pfrb_size,
    242 			    &sz2, &nadd, &ndel, &nchange, flags));
    243 			if (sz2 <= b.pfrb_msize) {
    244 				b.pfrb_size = sz2;
    245 				break;
    246 			} else
    247 				pfr_buf_grow(&b, sz2);
    248 		}
    249 		if (nadd)
    250 			xprintf(opts, "%d addresses added", nadd);
    251 		if (ndel)
    252 			xprintf(opts, "%d addresses deleted", ndel);
    253 		if (nchange)
    254 			xprintf(opts, "%d addresses changed", nchange);
    255 		if (!nadd && !ndel && !nchange)
    256 			xprintf(opts, "no changes");
    257 		if (opts & PF_OPT_VERBOSE)
    258 			PFRB_FOREACH(a, &b)
    259 				if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
    260 					print_addrx(a, NULL,
    261 					    opts & PF_OPT_USEDNS);
    262 	} else if (!strcmp(command, "show")) {
    263 		b.pfrb_type = (opts & PF_OPT_VERBOSE) ?
    264 			PFRB_ASTATS : PFRB_ADDRS;
    265 		if (argc || file != NULL)
    266 			usage();
    267 		for (;;) {
    268 			pfr_buf_grow(&b, b.pfrb_size);
    269 			b.pfrb_size = b.pfrb_msize;
    270 			if (opts & PF_OPT_VERBOSE)
    271 				RVTEST(pfr_get_astats(&table, b.pfrb_caddr,
    272 				    &b.pfrb_size, flags));
    273 			else
    274 				RVTEST(pfr_get_addrs(&table, b.pfrb_caddr,
    275 				    &b.pfrb_size, flags));
    276 			if (b.pfrb_size <= b.pfrb_msize)
    277 				break;
    278 		}
    279 		PFRB_FOREACH(p, &b)
    280 			if (opts & PF_OPT_VERBOSE)
    281 				print_astats(p, opts & PF_OPT_USEDNS);
    282 			else
    283 				print_addrx(p, NULL, opts & PF_OPT_USEDNS);
    284 	} else if (!strcmp(command, "test")) {
    285 		b.pfrb_type = PFRB_ADDRS;
    286 		b2.pfrb_type = PFRB_ADDRS;
    287 
    288 		if (load_addr(&b, argc, argv, file, 1))
    289 			goto _error;
    290 		if (opts & PF_OPT_VERBOSE2) {
    291 			flags |= PFR_FLAG_REPLACE;
    292 			PFRB_FOREACH(a, &b)
    293 				if (pfr_buf_add(&b2, a))
    294 					err(1, "duplicate buffer");
    295 		}
    296 		RVTEST(pfr_tst_addrs(&table, b.pfrb_caddr, b.pfrb_size,
    297 		    &nmatch, flags));
    298 		xprintf(opts, "%d/%d addresses match", nmatch, b.pfrb_size);
    299 		if (opts & PF_OPT_VERBOSE && !(opts & PF_OPT_VERBOSE2))
    300 			PFRB_FOREACH(a, &b)
    301 				if (a->pfra_fback == PFR_FB_MATCH)
    302 					print_addrx(a, NULL,
    303 					    opts & PF_OPT_USEDNS);
    304 		if (opts & PF_OPT_VERBOSE2) {
    305 			a2 = NULL;
    306 			PFRB_FOREACH(a, &b) {
    307 				a2 = pfr_buf_next(&b2, a2);
    308 				print_addrx(a2, a, opts & PF_OPT_USEDNS);
    309 			}
    310 		}
    311 		if (nmatch < b.pfrb_size)
    312 			rv = 2;
    313 	} else if (!strcmp(command, "zero")) {
    314 		if (argc || file != NULL)
    315 			usage();
    316 		flags |= PFR_FLAG_ADDRSTOO;
    317 		RVTEST(pfr_clr_tstats(&table, 1, &nzero, flags));
    318 		xprintf(opts, "%d table/stats cleared", nzero);
    319 	} else
    320 		warnx("pfctl_table: unknown command '%s'", command);
    321 	goto _cleanup;
    322 
    323 _error:
    324 	rv = -1;
    325 _cleanup:
    326 	pfr_buf_clear(&b);
    327 	pfr_buf_clear(&b2);
    328 	return (rv);
    329 }
    330 
    331 void
    332 print_table(struct pfr_table *ta, int verbose, int debug)
    333 {
    334 	if (!debug && !(ta->pfrt_flags & PFR_TFLAG_ACTIVE))
    335 		return;
    336 	if (verbose) {
    337 		printf("%c%c%c%c%c%c\t%s",
    338 		    (ta->pfrt_flags & PFR_TFLAG_CONST) ? 'c' : '-',
    339 		    (ta->pfrt_flags & PFR_TFLAG_PERSIST) ? 'p' : '-',
    340 		    (ta->pfrt_flags & PFR_TFLAG_ACTIVE) ? 'a' : '-',
    341 		    (ta->pfrt_flags & PFR_TFLAG_INACTIVE) ? 'i' : '-',
    342 		    (ta->pfrt_flags & PFR_TFLAG_REFERENCED) ? 'r' : '-',
    343 		    (ta->pfrt_flags & PFR_TFLAG_REFDANCHOR) ? 'h' : '-',
    344 		    ta->pfrt_name);
    345 		if (ta->pfrt_anchor[0])
    346 			printf("\t%s", ta->pfrt_anchor);
    347 		puts("");
    348 	} else
    349 		puts(ta->pfrt_name);
    350 }
    351 
    352 void
    353 print_tstats(struct pfr_tstats *ts, int debug)
    354 {
    355 	time_t	time = ts->pfrts_tzero;
    356 	int	dir, op;
    357 
    358 	if (!debug && !(ts->pfrts_flags & PFR_TFLAG_ACTIVE))
    359 		return;
    360 	print_table(&ts->pfrts_t, 1, debug);
    361 	printf("\tAddresses:   %d\n", ts->pfrts_cnt);
    362 	printf("\tCleared:     %s", ctime(&time));
    363 	printf("\tReferences:  [ Anchors: %-18d Rules: %-18d ]\n",
    364 	    ts->pfrts_refcnt[PFR_REFCNT_ANCHOR],
    365 	    ts->pfrts_refcnt[PFR_REFCNT_RULE]);
    366 	printf("\tEvaluations: [ NoMatch: %-18llu Match: %-18llu ]\n",
    367 	    (unsigned long long)ts->pfrts_nomatch,
    368 	    (unsigned long long)ts->pfrts_match);
    369 	for (dir = 0; dir < PFR_DIR_MAX; dir++)
    370 		for (op = 0; op < PFR_OP_TABLE_MAX; op++)
    371 			printf("\t%-12s [ Packets: %-18llu Bytes: %-18llu ]\n",
    372 			    stats_text[dir][op],
    373 			    (unsigned long long)ts->pfrts_packets[dir][op],
    374 			    (unsigned long long)ts->pfrts_bytes[dir][op]);
    375 }
    376 
    377 int
    378 load_addr(struct pfr_buffer *b, int argc, char *argv[], char *file,
    379     int nonetwork)
    380 {
    381 	while (argc--)
    382 		if (append_addr(b, *argv++, nonetwork)) {
    383 			if (errno)
    384 				warn("cannot decode %s", argv[-1]);
    385 			return (-1);
    386 		}
    387 	if (pfr_buf_load(b, file, nonetwork, append_addr)) {
    388 		warn("cannot load %s", file);
    389 		return (-1);
    390 	}
    391 	return (0);
    392 }
    393 
    394 void
    395 print_addrx(struct pfr_addr *ad, struct pfr_addr *rad, int dns)
    396 {
    397 	char		ch, buf[256] = "{error}";
    398 	char		fb[] = { ' ', 'M', 'A', 'D', 'C', 'Z', 'X', ' ', 'Y' };
    399 	unsigned int	fback, hostnet;
    400 
    401 	fback = (rad != NULL) ? rad->pfra_fback : ad->pfra_fback;
    402 	ch = (fback < sizeof(fb)/sizeof(*fb)) ? fb[fback] : '?';
    403 	hostnet = (ad->pfra_af == AF_INET6) ? 128 : 32;
    404 	inet_ntop(ad->pfra_af, &ad->pfra_u, buf, sizeof(buf));
    405 	printf("%c %c%s", ch, (ad->pfra_not?'!':' '), buf);
    406 	if (ad->pfra_net < hostnet)
    407 		printf("/%d", ad->pfra_net);
    408 	if (rad != NULL && fback != PFR_FB_NONE) {
    409 		if (strlcpy(buf, "{error}", sizeof(buf)) >= sizeof(buf))
    410 			errx(1, "print_addrx: strlcpy");
    411 		inet_ntop(rad->pfra_af, &rad->pfra_u, buf, sizeof(buf));
    412 		printf("\t%c%s", (rad->pfra_not?'!':' '), buf);
    413 		if (rad->pfra_net < hostnet)
    414 			printf("/%d", rad->pfra_net);
    415 	}
    416 	if (rad != NULL && fback == PFR_FB_NONE)
    417 		printf("\t nomatch");
    418 	if (dns && ad->pfra_net == hostnet) {
    419 		char host[NI_MAXHOST];
    420 		union sockaddr_union sa;
    421 
    422 		strlcpy(host, "?", sizeof(host));
    423 		bzero(&sa, sizeof(sa));
    424 		sa.sa.sa_family = ad->pfra_af;
    425 		if (sa.sa.sa_family == AF_INET) {
    426 			sa.sa.sa_len = sizeof(sa.sin);
    427 			sa.sin.sin_addr = ad->pfra_ip4addr;
    428 		} else {
    429 			sa.sa.sa_len = sizeof(sa.sin6);
    430 			sa.sin6.sin6_addr = ad->pfra_ip6addr;
    431 		}
    432 		if (getnameinfo(&sa.sa, sa.sa.sa_len, host, sizeof(host),
    433 		    NULL, 0, NI_NAMEREQD) == 0)
    434 			printf("\t(%s)", host);
    435 	}
    436 	printf("\n");
    437 }
    438 
    439 void
    440 print_astats(struct pfr_astats *as, int dns)
    441 {
    442 	time_t	time = as->pfras_tzero;
    443 	int	dir, op;
    444 
    445 	print_addrx(&as->pfras_a, NULL, dns);
    446 	printf("\tCleared:     %s", ctime(&time));
    447 	for (dir = 0; dir < PFR_DIR_MAX; dir++)
    448 		for (op = 0; op < PFR_OP_ADDR_MAX; op++)
    449 			printf("\t%-12s [ Packets: %-18llu Bytes: %-18llu ]\n",
    450 			    stats_text[dir][op],
    451 			    (unsigned long long)as->pfras_packets[dir][op],
    452 			    (unsigned long long)as->pfras_bytes[dir][op]);
    453 }
    454 
    455 void
    456 radix_perror(void)
    457 {
    458 	extern char *__progname;
    459 	fprintf(stderr, "%s: %s.\n", __progname, pfr_strerror(errno));
    460 }
    461 
    462 int
    463 pfctl_define_table(char *name, int flags, int addrs, const char *anchor,
    464     struct pfr_buffer *ab, u_int32_t ticket)
    465 {
    466 	struct pfr_table tbl;
    467 
    468 	bzero(&tbl, sizeof(tbl));
    469 	if (strlcpy(tbl.pfrt_name, name, sizeof(tbl.pfrt_name)) >=
    470 	    sizeof(tbl.pfrt_name) || strlcpy(tbl.pfrt_anchor, anchor,
    471 	    sizeof(tbl.pfrt_anchor)) >= sizeof(tbl.pfrt_anchor))
    472 		errx(1, "pfctl_define_table: strlcpy");
    473 	tbl.pfrt_flags = flags;
    474 
    475 	return pfr_ina_define(&tbl, ab->pfrb_caddr, ab->pfrb_size, NULL,
    476 	    NULL, ticket, addrs ? PFR_FLAG_ADDRSTOO : 0);
    477 }
    478 
    479 void
    480 warn_namespace_collision(const char *filter)
    481 {
    482 	struct pfr_buffer b;
    483 	struct pfr_table *t;
    484 	const char *name = NULL, *lastcoll;
    485 	int coll = 0;
    486 
    487 	bzero(&b, sizeof(b));
    488 	b.pfrb_type = PFRB_TABLES;
    489 	for (;;) {
    490 		pfr_buf_grow(&b, b.pfrb_size);
    491 		b.pfrb_size = b.pfrb_msize;
    492 		if (pfr_get_tables(NULL, b.pfrb_caddr,
    493 		    &b.pfrb_size, PFR_FLAG_ALLRSETS))
    494 			err(1, "pfr_get_tables");
    495 		if (b.pfrb_size <= b.pfrb_msize)
    496 			break;
    497 	}
    498 	PFRB_FOREACH(t, &b) {
    499 		if (!(t->pfrt_flags & PFR_TFLAG_ACTIVE))
    500 			continue;
    501 		if (filter != NULL && strcmp(filter, t->pfrt_name))
    502 			continue;
    503 		if (!t->pfrt_anchor[0])
    504 			name = t->pfrt_name;
    505 		else if (name != NULL && !strcmp(name, t->pfrt_name)) {
    506 			coll++;
    507 			lastcoll = name;
    508 			name = NULL;
    509 		}
    510 	}
    511 	if (coll == 1)
    512 		warnx("warning: namespace collision with <%s> global table.",
    513 		    lastcoll);
    514 	else if (coll > 1)
    515 		warnx("warning: namespace collisions with %d global tables.",
    516 		    coll);
    517 	pfr_buf_clear(&b);
    518 }
    519 
    520 void
    521 xprintf(int opts, const char *fmt, ...)
    522 {
    523 	va_list args;
    524 
    525 	if (opts & PF_OPT_QUIET)
    526 		return;
    527 
    528 	va_start(args, fmt);
    529 	vfprintf(stderr, fmt, args);
    530 	va_end(args);
    531 
    532 	if (opts & PF_OPT_DUMMYACTION)
    533 		fprintf(stderr, " (dummy).\n");
    534 	else if (opts & PF_OPT_NOACTION)
    535 		fprintf(stderr, " (syntax only).\n");
    536 	else
    537 		fprintf(stderr, ".\n");
    538 }
    539 
    540 
    541 /* interface stuff */
    542 
    543 int
    544 pfctl_show_ifaces(const char *filter, int opts)
    545 {
    546 	struct pfr_buffer	 b;
    547 	struct pfi_if		*p;
    548 	int			 i = 0, f = PFI_FLAG_GROUP|PFI_FLAG_INSTANCE;
    549 
    550 	if (filter != NULL && *filter && !isdigit((unsigned char)filter[strlen(filter)-1]))
    551 		f &= ~PFI_FLAG_INSTANCE;
    552 	bzero(&b, sizeof(b));
    553 	b.pfrb_type = PFRB_IFACES;
    554 	for (;;) {
    555 		pfr_buf_grow(&b, b.pfrb_size);
    556 		b.pfrb_size = b.pfrb_msize;
    557 		if (pfi_get_ifaces(filter, b.pfrb_caddr, &b.pfrb_size, f)) {
    558 			radix_perror();
    559 			return (1);
    560 		}
    561 		if (b.pfrb_size <= b.pfrb_msize)
    562 			break;
    563 		i++;
    564 	}
    565 	if (opts & PF_OPT_SHOWALL)
    566 		pfctl_print_title("INTERFACES:");
    567 	PFRB_FOREACH(p, &b)
    568 		print_iface(p, opts);
    569 	return (0);
    570 }
    571 
    572 void
    573 print_iface(struct pfi_if *p, int opts)
    574 {
    575 	time_t	tzero = p->pfif_tzero;
    576 	int	flags = (opts & PF_OPT_VERBOSE) ? p->pfif_flags : 0;
    577 	int	first = 1;
    578 	int	i, af, dir, act;
    579 
    580 	printf("%s", p->pfif_name);
    581 	oprintf(flags, PFI_IFLAG_INSTANCE, "instance", &first, 0);
    582 	oprintf(flags, PFI_IFLAG_GROUP, "group", &first, 0);
    583 	oprintf(flags, PFI_IFLAG_CLONABLE, "clonable", &first, 0);
    584 	oprintf(flags, PFI_IFLAG_DYNAMIC, "dynamic", &first, 0);
    585 	oprintf(flags, PFI_IFLAG_ATTACHED, "attached", &first, 1);
    586 	printf("\n");
    587 
    588 	if (!(opts & PF_OPT_VERBOSE2))
    589 		return;
    590 	printf("\tCleared:     %s", ctime(&tzero));
    591 	printf("\tReferences:  [ States:  %-18d Rules: %-18d ]\n",
    592 	    p->pfif_states, p->pfif_rules);
    593 	for (i = 0; i < 8; i++) {
    594 		af = (i>>2) & 1;
    595 		dir = (i>>1) &1;
    596 		act = i & 1;
    597 		printf("\t%-12s [ Packets: %-18llu Bytes: %-18llu ]\n",
    598 		    istats_text[af][dir][act],
    599 		    (unsigned long long)p->pfif_packets[af][dir][act],
    600 		    (unsigned long long)p->pfif_bytes[af][dir][act]);
    601 	}
    602 }
    603 
    604 void
    605 oprintf(int flags, int flag, const char *s, int *first, int last)
    606 {
    607 	if (flags & flag) {
    608 		printf(*first ? "\t(%s" : ", %s", s);
    609 		*first = 0;
    610 	}
    611 	if (last && !*first)
    612 		printf(")");
    613 }
    614 
    615