1 /* $OpenBSD: pfctl_table.c,v 1.66 2007/03/01 17:20:54 deraadt Exp $ */
4 * Copyright (c) 2002 Cedric Berger
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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.
33 #include <sys/types.h>
34 #include <sys/ioctl.h>
35 #include <sys/socket.h>
38 #include <net/pf/pfvar.h>
39 #include <arpa/inet.h>
51 #include "pfctl_parser.h"
54 extern void usage(void);
55 static int pfctl_table(int, char *[], char *, const char *, char *,
57 static void print_table(const struct pfr_table *, int, int);
58 static void print_tstats(const struct pfr_tstats *, int);
59 static int load_addr(struct pfr_buffer *, int, char *[], char *, int);
60 static void print_addrx(const struct pfr_addr *, const struct pfr_addr *,
62 static void print_astats(const struct pfr_astats *, int);
63 static void radix_perror(void);
64 static void xprintf(int, const char *, ...);
65 static void print_iface(const struct pfi_kif *, int);
67 static const char *stats_text[PFR_DIR_MAX][PFR_OP_TABLE_MAX] = {
68 { "In/Block:", "In/Pass:", "In/XPass:" },
69 { "Out/Block:", "Out/Pass:", "Out/XPass:" }
72 static const char *istats_text[2][2][2] = {
73 { { "In4/Pass:", "In4/Block:" }, { "Out4/Pass:", "Out4/Block:" } },
74 { { "In6/Pass:", "In6/Block:" }, { "Out6/Pass:", "Out6/Block:" } }
77 #define RVTEST(fct) do { \
78 if ((!(opts & PF_OPT_NOACTION) || \
79 (opts & PF_OPT_DUMMYACTION)) && \
86 #define CREATE_TABLE do { \
87 table.pfrt_flags |= PFR_TFLAG_PERSIST; \
88 if ((!(opts & PF_OPT_NOACTION) || \
89 (opts & PF_OPT_DUMMYACTION)) && \
90 (pfr_add_tables(&table, 1, &nadd, flags)) && \
96 warn_namespace_collision(table.pfrt_name); \
97 xprintf(opts, "%d table created", nadd); \
98 if (opts & PF_OPT_NOACTION) \
101 table.pfrt_flags &= ~PFR_TFLAG_PERSIST; \
105 pfctl_clear_tables(const char *anchor, int opts)
107 return pfctl_table(0, NULL, NULL, "-F", NULL, anchor, opts);
111 pfctl_show_tables(const char *anchor, int opts)
113 return pfctl_table(0, NULL, NULL, "-s", NULL, anchor, opts);
117 pfctl_command_tables(int argc, char *argv[], char *tname,
118 const char *command, char *file, const char *anchor, int opts)
120 if (tname == NULL || command == NULL)
122 return pfctl_table(argc, argv, tname, command, file, anchor, opts);
126 pfctl_table(int argc, char *argv[], char *tname, const char *command,
127 char *file, const char *anchor, int opts)
129 struct pfr_table table;
130 struct pfr_buffer b, b2;
131 const struct pfr_addr *a, *a2;
132 int nadd = 0, ndel = 0, nchange = 0, nzero = 0;
133 int rv = 0, flags = 0, nmatch = 0;
138 if (opts & PF_OPT_NOACTION)
139 flags |= PFR_FLAG_DUMMY;
141 bzero(&b, sizeof(b));
142 bzero(&b2, sizeof(b2));
143 bzero(&table, sizeof(table));
145 if (strlen(tname) >= PF_TABLE_NAME_SIZE)
147 if (strlcpy(table.pfrt_name, tname,
148 sizeof(table.pfrt_name)) >= sizeof(table.pfrt_name))
149 errx(1, "pfctl_table: strlcpy");
151 if (strlcpy(table.pfrt_anchor, anchor,
152 sizeof(table.pfrt_anchor)) >= sizeof(table.pfrt_anchor))
153 errx(1, "pfctl_table: strlcpy");
155 if (!strcmp(command, "-F")) {
156 if (argc || file != NULL)
158 RVTEST(pfr_clr_tables(&table, &ndel, flags));
159 xprintf(opts, "%d tables deleted", ndel);
160 } else if (!strcmp(command, "-s")) {
161 b.pfrb_type = (opts & PF_OPT_VERBOSE2) ?
162 PFRB_TSTATS : PFRB_TABLES;
163 if (argc || file != NULL)
166 pfr_buf_grow(&b, b.pfrb_size);
167 b.pfrb_size = b.pfrb_msize;
168 if (opts & PF_OPT_VERBOSE2)
169 RVTEST(pfr_get_tstats(&table,
170 b.pfrb_caddr, &b.pfrb_size, flags));
172 RVTEST(pfr_get_tables(&table,
173 b.pfrb_caddr, &b.pfrb_size, flags));
174 if (b.pfrb_size <= b.pfrb_msize)
178 if ((opts & PF_OPT_SHOWALL) && b.pfrb_size > 0)
179 pfctl_print_title("TABLES:");
182 if (opts & PF_OPT_VERBOSE2)
183 print_tstats(p, opts & PF_OPT_DEBUG);
185 print_table(p, opts & PF_OPT_VERBOSE,
186 opts & PF_OPT_DEBUG);
187 } else if (!strcmp(command, "kill")) {
188 if (argc || file != NULL)
190 RVTEST(pfr_del_tables(&table, 1, &ndel, flags));
191 xprintf(opts, "%d table deleted", ndel);
192 } else if (!strcmp(command, "flush")) {
193 if (argc || file != NULL)
195 RVTEST(pfr_clr_addrs(&table, &ndel, flags));
196 xprintf(opts, "%d addresses deleted", ndel);
197 } else if (!strcmp(command, "add")) {
198 b.pfrb_type = PFRB_ADDRS;
199 if (load_addr(&b, argc, argv, file, 0))
202 if (opts & PF_OPT_VERBOSE)
203 flags |= PFR_FLAG_FEEDBACK;
204 RVTEST(pfr_add_addrs(&table, b.pfrb_caddr, b.pfrb_size,
206 xprintf(opts, "%d/%d addresses added", nadd, b.pfrb_size);
207 if (opts & PF_OPT_VERBOSE)
209 if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
211 opts & PF_OPT_USEDNS);
212 } else if (!strcmp(command, "delete")) {
213 b.pfrb_type = PFRB_ADDRS;
214 if (load_addr(&b, argc, argv, file, 0))
216 if (opts & PF_OPT_VERBOSE)
217 flags |= PFR_FLAG_FEEDBACK;
218 RVTEST(pfr_del_addrs(&table, b.pfrb_caddr, b.pfrb_size,
220 xprintf(opts, "%d/%d addresses deleted", ndel, b.pfrb_size);
221 if (opts & PF_OPT_VERBOSE)
223 if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
225 opts & PF_OPT_USEDNS);
226 } else if (!strcmp(command, "replace")) {
227 b.pfrb_type = PFRB_ADDRS;
228 if (load_addr(&b, argc, argv, file, 0))
231 if (opts & PF_OPT_VERBOSE)
232 flags |= PFR_FLAG_FEEDBACK;
234 int sz2 = b.pfrb_msize;
236 RVTEST(pfr_set_addrs(&table, b.pfrb_caddr, b.pfrb_size,
237 &sz2, &nadd, &ndel, &nchange, flags));
238 if (sz2 <= b.pfrb_msize) {
242 pfr_buf_grow(&b, sz2);
245 xprintf(opts, "%d addresses added", nadd);
247 xprintf(opts, "%d addresses deleted", ndel);
249 xprintf(opts, "%d addresses changed", nchange);
250 if (!nadd && !ndel && !nchange)
251 xprintf(opts, "no changes");
252 if (opts & PF_OPT_VERBOSE)
254 if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
256 opts & PF_OPT_USEDNS);
257 } else if (!strcmp(command, "expire")) {
261 b.pfrb_type = PFRB_ASTATS;
262 b2.pfrb_type = PFRB_ADDRS;
263 if (argc != 1 || file != NULL)
265 lifetime = strtonum(*argv, 0, UINT_MAX, &errstr);
267 errx(1, "expiry time: %s", errstr);
269 pfr_buf_grow(&b, b.pfrb_size);
270 b.pfrb_size = b.pfrb_msize;
271 RVTEST(pfr_get_astats(&table, b.pfrb_caddr,
272 &b.pfrb_size, flags));
273 if (b.pfrb_size <= b.pfrb_msize)
277 if (time(NULL) - ((struct pfr_astats *)p)->pfras_tzero >
280 &((struct pfr_astats *)p)->pfras_a))
281 err(1, "duplicate buffer");
283 if (opts & PF_OPT_VERBOSE)
284 flags |= PFR_FLAG_FEEDBACK;
285 RVTEST(pfr_del_addrs(&table, b2.pfrb_caddr, b2.pfrb_size,
287 xprintf(opts, "%d/%d addresses expired", ndel, b2.pfrb_size);
288 if (opts & PF_OPT_VERBOSE)
290 if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
292 opts & PF_OPT_USEDNS);
293 } else if (!strcmp(command, "show")) {
294 b.pfrb_type = (opts & PF_OPT_VERBOSE) ?
295 PFRB_ASTATS : PFRB_ADDRS;
296 if (argc || file != NULL)
299 pfr_buf_grow(&b, b.pfrb_size);
300 b.pfrb_size = b.pfrb_msize;
301 if (opts & PF_OPT_VERBOSE)
302 RVTEST(pfr_get_astats(&table, b.pfrb_caddr,
303 &b.pfrb_size, flags));
305 RVTEST(pfr_get_addrs(&table, b.pfrb_caddr,
306 &b.pfrb_size, flags));
307 if (b.pfrb_size <= b.pfrb_msize)
311 if (opts & PF_OPT_VERBOSE)
312 print_astats(p, opts & PF_OPT_USEDNS);
314 print_addrx(p, NULL, opts & PF_OPT_USEDNS);
315 } else if (!strcmp(command, "test")) {
316 b.pfrb_type = PFRB_ADDRS;
317 b2.pfrb_type = PFRB_ADDRS;
319 if (load_addr(&b, argc, argv, file, 1))
321 if (opts & PF_OPT_VERBOSE2) {
322 flags |= PFR_FLAG_REPLACE;
324 if (pfr_buf_add(&b2, a))
325 err(1, "duplicate buffer");
327 RVTEST(pfr_tst_addrs(&table, b.pfrb_caddr, b.pfrb_size,
329 xprintf(opts, "%d/%d addresses match", nmatch, b.pfrb_size);
330 if ((opts & PF_OPT_VERBOSE) && !(opts & PF_OPT_VERBOSE2))
332 if (a->pfra_fback == PFR_FB_MATCH)
334 opts & PF_OPT_USEDNS);
335 if (opts & PF_OPT_VERBOSE2) {
337 PFRB_FOREACH(a, &b) {
338 a2 = pfr_buf_next(&b2, a2);
339 print_addrx(a2, a, opts & PF_OPT_USEDNS);
342 if (nmatch < b.pfrb_size)
344 } else if (!strcmp(command, "zero")) {
345 if (argc || file != NULL)
347 flags |= PFR_FLAG_ADDRSTOO;
348 RVTEST(pfr_clr_tstats(&table, 1, &nzero, flags));
349 xprintf(opts, "%d table/stats cleared", nzero);
351 warnx("pfctl_table: unknown command '%s'", command);
363 print_table(const struct pfr_table *ta, int verbose, int debug)
365 if (!debug && !(ta->pfrt_flags & PFR_TFLAG_ACTIVE))
368 printf("%c%c%c%c%c%c\t%s",
369 (ta->pfrt_flags & PFR_TFLAG_CONST) ? 'c' : '-',
370 (ta->pfrt_flags & PFR_TFLAG_PERSIST) ? 'p' : '-',
371 (ta->pfrt_flags & PFR_TFLAG_ACTIVE) ? 'a' : '-',
372 (ta->pfrt_flags & PFR_TFLAG_INACTIVE) ? 'i' : '-',
373 (ta->pfrt_flags & PFR_TFLAG_REFERENCED) ? 'r' : '-',
374 (ta->pfrt_flags & PFR_TFLAG_REFDANCHOR) ? 'h' : '-',
376 if (ta->pfrt_anchor[0])
377 printf("\t%s", ta->pfrt_anchor);
384 print_tstats(const struct pfr_tstats *ts, int debug)
386 time_t rtime = ts->pfrts_tzero;
389 if (!debug && !(ts->pfrts_flags & PFR_TFLAG_ACTIVE))
391 print_table(&ts->pfrts_t, 1, debug);
392 printf("\tAddresses: %d\n", ts->pfrts_cnt);
393 printf("\tCleared: %s", ctime(&rtime));
394 printf("\tReferences: [ Anchors: %-18d Rules: %-18d ]\n",
395 ts->pfrts_refcnt[PFR_REFCNT_ANCHOR],
396 ts->pfrts_refcnt[PFR_REFCNT_RULE]);
397 printf("\tEvaluations: [ NoMatch: %-18llu Match: %-18llu ]\n",
398 (unsigned long long)ts->pfrts_nomatch,
399 (unsigned long long)ts->pfrts_match);
400 for (dir = 0; dir < PFR_DIR_MAX; dir++)
401 for (op = 0; op < PFR_OP_TABLE_MAX; op++)
402 printf("\t%-12s [ Packets: %-18llu Bytes: %-18llu ]\n",
404 (unsigned long long)ts->pfrts_packets[dir][op],
405 (unsigned long long)ts->pfrts_bytes[dir][op]);
409 load_addr(struct pfr_buffer *b, int argc, char *argv[], char *file,
413 if (append_addr(b, *argv++, nonetwork)) {
415 warn("cannot decode %s", argv[-1]);
418 if (pfr_buf_load(b, file, nonetwork, append_addr)) {
419 warn("cannot load %s", file);
426 print_addrx(const struct pfr_addr *ad, const struct pfr_addr *rad, int dns)
428 char ch, buf[256] = "{error}";
429 char fb[] = { ' ', 'M', 'A', 'D', 'C', 'Z', 'X', ' ', 'Y' };
430 unsigned int fback, hostnet;
432 fback = (rad != NULL) ? rad->pfra_fback : ad->pfra_fback;
433 ch = (fback < sizeof(fb)/sizeof(*fb)) ? fb[fback] : '?';
434 hostnet = (ad->pfra_af == AF_INET6) ? 128 : 32;
435 inet_ntop(ad->pfra_af, &ad->pfra_u, buf, sizeof(buf));
436 printf("%c %c%s", ch, (ad->pfra_not?'!':' '), buf);
437 if (ad->pfra_net < hostnet)
438 printf("/%d", ad->pfra_net);
439 if (rad != NULL && fback != PFR_FB_NONE) {
440 if (strlcpy(buf, "{error}", sizeof(buf)) >= sizeof(buf))
441 errx(1, "print_addrx: strlcpy");
442 inet_ntop(rad->pfra_af, &rad->pfra_u, buf, sizeof(buf));
443 printf("\t%c%s", (rad->pfra_not?'!':' '), buf);
444 if (rad->pfra_net < hostnet)
445 printf("/%d", rad->pfra_net);
447 if (rad != NULL && fback == PFR_FB_NONE)
448 printf("\t nomatch");
449 if (dns && ad->pfra_net == hostnet) {
450 char hostname[NI_MAXHOST];
451 union sockaddr_union sa;
453 strlcpy(hostname, "?", sizeof(hostname));
454 bzero(&sa, sizeof(sa));
455 sa.sa.sa_family = ad->pfra_af;
456 if (sa.sa.sa_family == AF_INET) {
457 sa.sa.sa_len = sizeof(sa.sin);
458 sa.sin.sin_addr = ad->pfra_ip4addr;
460 sa.sa.sa_len = sizeof(sa.sin6);
461 sa.sin6.sin6_addr = ad->pfra_ip6addr;
463 if (getnameinfo(&sa.sa, sa.sa.sa_len, hostname, sizeof(hostname),
464 NULL, 0, NI_NAMEREQD) == 0)
465 printf("\t(%s)", hostname);
471 print_astats(const struct pfr_astats *as, int dns)
473 time_t rtime = as->pfras_tzero;
476 print_addrx(&as->pfras_a, NULL, dns);
477 printf("\tCleared: %s", ctime(&rtime));
478 for (dir = 0; dir < PFR_DIR_MAX; dir++)
479 for (op = 0; op < PFR_OP_ADDR_MAX; op++)
480 printf("\t%-12s [ Packets: %-18llu Bytes: %-18llu ]\n",
482 (unsigned long long)as->pfras_packets[dir][op],
483 (unsigned long long)as->pfras_bytes[dir][op]);
489 fprintf(stderr, "%s: %s.\n", getprogname(), pfr_strerror(errno));
493 pfctl_define_table(char *name, int flags, int addrs, const char *anchor,
494 struct pfr_buffer *ab, u_int32_t ticket)
496 struct pfr_table tbl;
498 bzero(&tbl, sizeof(tbl));
499 if (strlcpy(tbl.pfrt_name, name, sizeof(tbl.pfrt_name)) >=
500 sizeof(tbl.pfrt_name) || strlcpy(tbl.pfrt_anchor, anchor,
501 sizeof(tbl.pfrt_anchor)) >= sizeof(tbl.pfrt_anchor))
502 errx(1, "pfctl_define_table: strlcpy");
503 tbl.pfrt_flags = flags;
505 return pfr_ina_define(&tbl, ab->pfrb_caddr, ab->pfrb_size, NULL,
506 NULL, ticket, addrs ? PFR_FLAG_ADDRSTOO : 0);
510 warn_namespace_collision(const char *filter)
513 const struct pfr_table *t;
514 const char *name = NULL, *lastcoll;
517 bzero(&b, sizeof(b));
518 b.pfrb_type = PFRB_TABLES;
520 pfr_buf_grow(&b, b.pfrb_size);
521 b.pfrb_size = b.pfrb_msize;
522 if (pfr_get_tables(NULL, b.pfrb_caddr,
523 &b.pfrb_size, PFR_FLAG_ALLRSETS))
524 err(1, "pfr_get_tables");
525 if (b.pfrb_size <= b.pfrb_msize)
528 PFRB_FOREACH(t, &b) {
529 if (!(t->pfrt_flags & PFR_TFLAG_ACTIVE))
531 if (filter != NULL && strcmp(filter, t->pfrt_name))
533 if (!t->pfrt_anchor[0])
535 else if (name != NULL && !strcmp(name, t->pfrt_name)) {
542 warnx("warning: namespace collision with <%s> global table.",
545 warnx("warning: namespace collisions with %d global tables.",
551 xprintf(int opts, const char *fmt, ...)
555 if (opts & PF_OPT_QUIET)
559 vfprintf(stderr, fmt, args);
562 if (opts & PF_OPT_DUMMYACTION)
563 fprintf(stderr, " (dummy).\n");
564 else if (opts & PF_OPT_NOACTION)
565 fprintf(stderr, " (syntax only).\n");
567 fprintf(stderr, ".\n");
571 /* interface stuff */
574 pfctl_show_ifaces(const char *filter, int opts)
577 const struct pfi_kif *p;
580 bzero(&b, sizeof(b));
581 b.pfrb_type = PFRB_IFACES;
583 pfr_buf_grow(&b, b.pfrb_size);
584 b.pfrb_size = b.pfrb_msize;
585 if (pfi_get_ifaces(filter, b.pfrb_caddr, &b.pfrb_size)) {
589 if (b.pfrb_size <= b.pfrb_msize)
593 if (opts & PF_OPT_SHOWALL)
594 pfctl_print_title("INTERFACES:");
596 print_iface(p, opts);
601 print_iface(const struct pfi_kif *p, int opts)
603 time_t tzero = p->pfik_tzero;
606 printf("%s", p->pfik_name);
607 if (opts & PF_OPT_VERBOSE) {
608 if (p->pfik_flags & PFI_IFLAG_SKIP)
613 if (!(opts & PF_OPT_VERBOSE2))
615 printf("\tCleared: %s", ctime(&tzero));
616 printf("\tReferences: [ States: %-18d Rules: %-18d ]\n",
617 p->pfik_states, p->pfik_rules);
618 for (i = 0; i < 8; i++) {
622 printf("\t%-12s [ Packets: %-18llu Bytes: %-18llu ]\n",
623 istats_text[af][dir][act],
624 (unsigned long long)p->pfik_packets[af][dir][act],
625 (unsigned long long)p->pfik_bytes[af][dir][act]);