1 /* $OpenBSD: pfctl.c,v 1.278 2008/08/31 20:18:17 jmc Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-2-Clause
5 *
6 * Copyright (c) 2001 Daniel Hartmeier
7 * Copyright (c) 2002,2003 Henning Brauer
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 *
14 * - Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * - Redistributions in binary form must reproduce the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer in the documentation and/or other materials provided
19 * with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 *
34 */
35
36 #include <sys/cdefs.h>
37 #define PFIOC_USE_LATEST
38
39 #include <sys/types.h>
40 #include <sys/ioctl.h>
41 #include <sys/socket.h>
42 #include <sys/stat.h>
43 #include <sys/endian.h>
44
45 #include <net/if.h>
46 #include <netinet/in.h>
47 #include <net/pfvar.h>
48 #include <arpa/inet.h>
49 #include <net/altq/altq.h>
50
51 #include <err.h>
52 #include <errno.h>
53 #include <fcntl.h>
54 #include <libpfctl.h>
55 #include <limits.h>
56 #include <netdb.h>
57 #include <stdint.h>
58 #include <stdio.h>
59 #include <stdlib.h>
60 #include <string.h>
61 #include <unistd.h>
62 #include <stdarg.h>
63 #include <libgen.h>
64
65 #include "pfctl_parser.h"
66 #include "pfctl.h"
67
68 void usage(void);
69 int pfctl_enable(int, int);
70 int pfctl_disable(int, int);
71 void pfctl_clear_stats(struct pfctl_handle *, int);
72 void pfctl_get_skip_ifaces(void);
73 void pfctl_check_skip_ifaces(char *);
74 void pfctl_adjust_skip_ifaces(struct pfctl *);
75 void pfctl_clear_interface_flags(int, int);
76 void pfctl_flush_eth_rules(int, int, char *);
77 int pfctl_flush_rules(int, int, char *);
78 void pfctl_flush_nat(int, int, char *);
79 int pfctl_clear_altq(int, int);
80 void pfctl_clear_src_nodes(int, int);
81 void pfctl_clear_iface_states(int, const char *, int);
82 struct addrinfo *
83 pfctl_addrprefix(char *, struct pf_addr *, int);
84 void pfctl_kill_src_nodes(int, int);
85 void pfctl_net_kill_states(int, const char *, int);
86 void pfctl_gateway_kill_states(int, const char *, int);
87 void pfctl_label_kill_states(int, const char *, int);
88 void pfctl_id_kill_states(int, const char *, int);
89 void pfctl_key_kill_states(int, const char *, int);
90 int pfctl_parse_host(char *, struct pf_rule_addr *);
91 void pfctl_init_options(struct pfctl *);
92 int pfctl_load_options(struct pfctl *);
93 int pfctl_load_limit(struct pfctl *, unsigned int, unsigned int);
94 int pfctl_load_timeout(struct pfctl *, unsigned int, unsigned int);
95 int pfctl_load_debug(struct pfctl *, unsigned int);
96 int pfctl_load_logif(struct pfctl *, char *);
97 int pfctl_load_hostid(struct pfctl *, u_int32_t);
98 int pfctl_load_reassembly(struct pfctl *, u_int32_t);
99 int pfctl_load_syncookies(struct pfctl *, u_int8_t);
100 int pfctl_get_pool(int, struct pfctl_pool *, u_int32_t, u_int32_t, int,
101 const char *, int);
102 void pfctl_print_eth_rule_counters(struct pfctl_eth_rule *, int);
103 void pfctl_print_rule_counters(struct pfctl_rule *, int);
104 int pfctl_show_eth_rules(int, char *, int, enum pfctl_show, char *, int, int);
105 int pfctl_show_rules(int, char *, int, enum pfctl_show, char *, int, int);
106 int pfctl_show_nat(int, const char *, int, char *, int, int);
107 int pfctl_show_src_nodes(int, int);
108 int pfctl_show_states(int, const char *, int);
109 int pfctl_show_status(int, int);
110 int pfctl_show_running(int);
111 int pfctl_show_timeouts(int, int);
112 int pfctl_show_limits(int, int);
113 void pfctl_debug(int, u_int32_t, int);
114 int pfctl_test_altqsupport(int, int);
115 int pfctl_show_anchors(int, int, char *);
116 int pfctl_show_eth_anchors(int, int, char *);
117 int pfctl_ruleset_trans(struct pfctl *, char *, struct pfctl_anchor *, bool);
118 int pfctl_eth_ruleset_trans(struct pfctl *, char *,
119 struct pfctl_eth_anchor *);
120 int pfctl_load_eth_ruleset(struct pfctl *, char *,
121 struct pfctl_eth_ruleset *, int);
122 int pfctl_load_eth_rule(struct pfctl *, char *, struct pfctl_eth_rule *,
123 int);
124 int pfctl_load_ruleset(struct pfctl *, char *,
125 struct pfctl_ruleset *, int, int);
126 int pfctl_load_rule(struct pfctl *, char *, struct pfctl_rule *, int);
127 const char *pfctl_lookup_option(char *, const char * const *);
128 void pfctl_reset(int, int);
129 int pfctl_walk_show(int, struct pfioc_ruleset *, void *);
130 int pfctl_walk_get(int, struct pfioc_ruleset *, void *);
131 int pfctl_walk_anchors(int, int, const char *,
132 int(*)(int, struct pfioc_ruleset *, void *), void *);
133 struct pfr_anchors *
134 pfctl_get_anchors(int, char *, int);
135 int pfctl_recurse(int, int, char *,
136 int(*)(int, int, struct pfr_anchoritem *));
137 int pfctl_call_clearrules(int, int, struct pfr_anchoritem *);
138 int pfctl_call_cleartables(int, int, struct pfr_anchoritem *);
139 int pfctl_call_clearanchors(int, int, struct pfr_anchoritem *);
140
141 static struct pfctl_anchor_global pf_anchors;
142 struct pfctl_anchor pf_main_anchor;
143 struct pfctl_eth_anchor pf_eth_main_anchor;
144 static struct pfr_buffer skip_b;
145
146 static const char *clearopt;
147 static char *rulesopt;
148 static const char *showopt;
149 static const char *debugopt;
150 static char *anchoropt;
151 static const char *optiopt = NULL;
152 static const char *pf_device = PF_DEVICE;
153 static char *ifaceopt;
154 static char *tableopt;
155 static const char *tblcmdopt;
156 static int src_node_killers;
157 static char *src_node_kill[2];
158 static int state_killers;
159 static char *state_kill[2];
160 int loadopt;
161 int altqsupport;
162
163 int dev = -1;
164 struct pfctl_handle *pfh = NULL;
165 static int first_title = 1;
166 static int labels = 0;
167 static int exit_val = 0;
168
169 #define INDENT(d, o) do { \
170 if (o) { \
171 int i; \
172 for (i=0; i < d; i++) \
173 printf(" "); \
174 } \
175 } while (0); \
176
177
178 static const struct {
179 const char *name;
180 int index;
181 } pf_limits[] = {
182 { "states", PF_LIMIT_STATES },
183 { "src-nodes", PF_LIMIT_SRC_NODES },
184 { "frags", PF_LIMIT_FRAGS },
185 { "table-entries", PF_LIMIT_TABLE_ENTRIES },
186 { NULL, 0 }
187 };
188
189 struct pf_hint {
190 const char *name;
191 int timeout;
192 };
193 static const struct pf_hint pf_hint_normal[] = {
194 { "tcp.first", 2 * 60 },
195 { "tcp.opening", 30 },
196 { "tcp.established", 24 * 60 * 60 },
197 { "tcp.closing", 15 * 60 },
198 { "tcp.finwait", 45 },
199 { "tcp.closed", 90 },
200 { "tcp.tsdiff", 30 },
201 { NULL, 0 }
202 };
203 static const struct pf_hint pf_hint_satellite[] = {
204 { "tcp.first", 3 * 60 },
205 { "tcp.opening", 30 + 5 },
206 { "tcp.established", 24 * 60 * 60 },
207 { "tcp.closing", 15 * 60 + 5 },
208 { "tcp.finwait", 45 + 5 },
209 { "tcp.closed", 90 + 5 },
210 { "tcp.tsdiff", 60 },
211 { NULL, 0 }
212 };
213 static const struct pf_hint pf_hint_conservative[] = {
214 { "tcp.first", 60 * 60 },
215 { "tcp.opening", 15 * 60 },
216 { "tcp.established", 5 * 24 * 60 * 60 },
217 { "tcp.closing", 60 * 60 },
218 { "tcp.finwait", 10 * 60 },
219 { "tcp.closed", 3 * 60 },
220 { "tcp.tsdiff", 60 },
221 { NULL, 0 }
222 };
223 static const struct pf_hint pf_hint_aggressive[] = {
224 { "tcp.first", 30 },
225 { "tcp.opening", 5 },
226 { "tcp.established", 5 * 60 * 60 },
227 { "tcp.closing", 60 },
228 { "tcp.finwait", 30 },
229 { "tcp.closed", 30 },
230 { "tcp.tsdiff", 10 },
231 { NULL, 0 }
232 };
233
234 static const struct {
235 const char *name;
236 const struct pf_hint *hint;
237 } pf_hints[] = {
238 { "normal", pf_hint_normal },
239 { "satellite", pf_hint_satellite },
240 { "high-latency", pf_hint_satellite },
241 { "conservative", pf_hint_conservative },
242 { "aggressive", pf_hint_aggressive },
243 { NULL, NULL }
244 };
245
246 static const char * const clearopt_list[] = {
247 "nat", "queue", "rules", "Sources",
248 "states", "info", "Tables", "osfp", "all",
249 "ethernet", "Reset", NULL
250 };
251
252 static const char * const showopt_list[] = {
253 "ether", "nat", "queue", "rules", "Anchors", "Sources", "states",
254 "info", "Interfaces", "labels", "timeouts", "memory", "Tables",
255 "osfp", "Running", "all", "creatorids", NULL
256 };
257
258 static const char * const tblcmdopt_list[] = {
259 "kill", "flush", "add", "delete", "load", "replace", "show",
260 "test", "zero", "expire", "reset", NULL
261 };
262
263 static const char * const debugopt_list[] = {
264 "none", "urgent", "misc", "loud", NULL
265 };
266
267 static const char * const optiopt_list[] = {
268 "none", "basic", "profile", NULL
269 };
270
271 void
usage(void)272 usage(void)
273 {
274 extern char *__progname;
275
276 fprintf(stderr,
277 "usage: %s [-AdeghMmNnOPqRSrvz] [-a anchor] [-D macro=value] [-F modifier]\n"
278 "\t[-f file] [-i interface] [-K host | network]\n"
279 "\t[-k host | network | gateway | label | id] [-o level] [-p device]\n"
280 "\t[-s modifier] [-t table -T command [address ...]] [-x level]\n",
281 __progname);
282
283 exit(1);
284 }
285
286 void
pfctl_err(int opts,int eval,const char * fmt,...)287 pfctl_err(int opts, int eval, const char *fmt, ...)
288 {
289 va_list ap;
290
291 va_start(ap, fmt);
292
293 if ((opts & PF_OPT_IGNFAIL) == 0)
294 verr(eval, fmt, ap);
295 else
296 vwarn(fmt, ap);
297
298 va_end(ap);
299
300 exit_val = eval;
301 }
302
303 void
pfctl_errx(int opts,int eval,const char * fmt,...)304 pfctl_errx(int opts, int eval, const char *fmt, ...)
305 {
306 va_list ap;
307
308 va_start(ap, fmt);
309
310 if ((opts & PF_OPT_IGNFAIL) == 0)
311 verrx(eval, fmt, ap);
312 else
313 vwarnx(fmt, ap);
314
315 va_end(ap);
316
317 exit_val = eval;
318 }
319
320 /*
321 * Cache protocol number to name translations.
322 *
323 * Translation is performed a lot e.g., when dumping states and
324 * getprotobynumber is incredibly expensive.
325 *
326 * Note from the getprotobynumber(3) manpage:
327 * <quote>
328 * These functions use a thread-specific data space; if the data is needed
329 * for future use, it should be copied before any subsequent calls overwrite
330 * it. Only the Internet protocols are currently understood.
331 * </quote>
332 *
333 * Consequently we only cache the name and strdup it for safety.
334 *
335 * At the time of writing this comment the last entry in /etc/protocols is:
336 * divert 258 DIVERT # Divert pseudo-protocol [non IANA]
337 */
338 const char *
pfctl_proto2name(int proto)339 pfctl_proto2name(int proto)
340 {
341 static const char *pfctl_proto_cache[259];
342 struct protoent *p;
343
344 if (proto >= nitems(pfctl_proto_cache)) {
345 p = getprotobynumber(proto);
346 if (p == NULL) {
347 return (NULL);
348 }
349 return (p->p_name);
350 }
351
352 if (pfctl_proto_cache[proto] == NULL) {
353 p = getprotobynumber(proto);
354 if (p == NULL) {
355 return (NULL);
356 }
357 pfctl_proto_cache[proto] = strdup(p->p_name);
358 }
359
360 return (pfctl_proto_cache[proto]);
361 }
362
363 int
pfctl_enable(int dev,int opts)364 pfctl_enable(int dev, int opts)
365 {
366 int ret;
367
368 if ((ret = pfctl_startstop(pfh, 1)) != 0) {
369 if (ret == EEXIST)
370 errx(1, "pf already enabled");
371 else if (ret == ESRCH)
372 errx(1, "pfil registeration failed");
373 else
374 errc(1, ret, "DIOCSTART");
375 }
376 if ((opts & PF_OPT_QUIET) == 0)
377 fprintf(stderr, "pf enabled\n");
378
379 if (altqsupport && ioctl(dev, DIOCSTARTALTQ))
380 if (errno != EEXIST)
381 err(1, "DIOCSTARTALTQ");
382
383 return (0);
384 }
385
386 int
pfctl_disable(int dev,int opts)387 pfctl_disable(int dev, int opts)
388 {
389 int ret;
390
391 if ((ret = pfctl_startstop(pfh, 0)) != 0) {
392 if (ret == ENOENT)
393 errx(1, "pf not enabled");
394 else
395 errc(1, ret, "DIOCSTOP");
396 }
397 if ((opts & PF_OPT_QUIET) == 0)
398 fprintf(stderr, "pf disabled\n");
399
400 if (altqsupport && ioctl(dev, DIOCSTOPALTQ))
401 if (errno != ENOENT)
402 err(1, "DIOCSTOPALTQ");
403
404 return (0);
405 }
406
407 void
pfctl_clear_stats(struct pfctl_handle * h,int opts)408 pfctl_clear_stats(struct pfctl_handle *h, int opts)
409 {
410 int ret;
411 if ((ret = pfctl_clear_status(h)) != 0)
412 pfctl_err(opts, 1, "DIOCCLRSTATUS");
413 if ((opts & PF_OPT_QUIET) == 0)
414 fprintf(stderr, "pf: statistics cleared\n");
415 }
416
417 void
pfctl_get_skip_ifaces(void)418 pfctl_get_skip_ifaces(void)
419 {
420 bzero(&skip_b, sizeof(skip_b));
421 skip_b.pfrb_type = PFRB_IFACES;
422 for (;;) {
423 pfr_buf_grow(&skip_b, skip_b.pfrb_size);
424 skip_b.pfrb_size = skip_b.pfrb_msize;
425 if (pfi_get_ifaces(NULL, skip_b.pfrb_caddr, &skip_b.pfrb_size))
426 err(1, "pfi_get_ifaces");
427 if (skip_b.pfrb_size <= skip_b.pfrb_msize)
428 break;
429 }
430 }
431
432 void
pfctl_check_skip_ifaces(char * ifname)433 pfctl_check_skip_ifaces(char *ifname)
434 {
435 struct pfi_kif *p;
436 struct node_host *h = NULL, *n = NULL;
437
438 PFRB_FOREACH(p, &skip_b) {
439 if (!strcmp(ifname, p->pfik_name) &&
440 (p->pfik_flags & PFI_IFLAG_SKIP))
441 p->pfik_flags &= ~PFI_IFLAG_SKIP;
442 if (!strcmp(ifname, p->pfik_name) && p->pfik_group != NULL) {
443 if ((h = ifa_grouplookup(p->pfik_name, 0)) == NULL)
444 continue;
445
446 for (n = h; n != NULL; n = n->next) {
447 if (strncmp(p->pfik_name, ifname, IFNAMSIZ))
448 continue;
449
450 p->pfik_flags &= ~PFI_IFLAG_SKIP;
451 }
452 }
453 }
454 }
455
456 void
pfctl_adjust_skip_ifaces(struct pfctl * pf)457 pfctl_adjust_skip_ifaces(struct pfctl *pf)
458 {
459 struct pfi_kif *p, *pp;
460 struct node_host *h = NULL, *n = NULL;
461
462 PFRB_FOREACH(p, &skip_b) {
463 if (p->pfik_group == NULL || !(p->pfik_flags & PFI_IFLAG_SKIP))
464 continue;
465
466 pfctl_set_interface_flags(pf, p->pfik_name, PFI_IFLAG_SKIP, 0);
467 if ((h = ifa_grouplookup(p->pfik_name, 0)) == NULL)
468 continue;
469
470 for (n = h; n != NULL; n = n->next)
471 PFRB_FOREACH(pp, &skip_b) {
472 if (strncmp(pp->pfik_name, n->ifname, IFNAMSIZ))
473 continue;
474
475 if (!(pp->pfik_flags & PFI_IFLAG_SKIP))
476 pfctl_set_interface_flags(pf,
477 pp->pfik_name, PFI_IFLAG_SKIP, 1);
478 if (pp->pfik_flags & PFI_IFLAG_SKIP)
479 pp->pfik_flags &= ~PFI_IFLAG_SKIP;
480 }
481 }
482
483 PFRB_FOREACH(p, &skip_b) {
484 if (! (p->pfik_flags & PFI_IFLAG_SKIP))
485 continue;
486
487 pfctl_set_interface_flags(pf, p->pfik_name, PFI_IFLAG_SKIP, 0);
488 }
489 }
490
491 void
pfctl_clear_interface_flags(int dev,int opts)492 pfctl_clear_interface_flags(int dev, int opts)
493 {
494 struct pfioc_iface pi;
495
496 if ((opts & PF_OPT_NOACTION) == 0) {
497 bzero(&pi, sizeof(pi));
498 pi.pfiio_flags = PFI_IFLAG_SKIP;
499
500 if (ioctl(dev, DIOCCLRIFFLAG, &pi))
501 err(1, "DIOCCLRIFFLAG");
502 if ((opts & PF_OPT_QUIET) == 0)
503 fprintf(stderr, "pf: interface flags reset\n");
504 }
505 }
506
507 void
pfctl_flush_eth_rules(int dev,int opts,char * anchorname)508 pfctl_flush_eth_rules(int dev, int opts, char *anchorname)
509 {
510 int ret;
511
512 ret = pfctl_clear_eth_rules(dev, anchorname);
513 if (ret != 0)
514 err(1, "pfctl_clear_eth_rules");
515
516 if ((opts & PF_OPT_QUIET) == 0)
517 fprintf(stderr, "Ethernet rules cleared\n");
518 }
519
520 int
pfctl_flush_rules(int dev,int opts,char * anchorname)521 pfctl_flush_rules(int dev, int opts, char *anchorname)
522 {
523 int ret;
524
525 ret = pfctl_clear_rules(dev, anchorname);
526 if (ret != 0) {
527 pfctl_err(opts, 1, "%s", __func__);
528 return (1);
529 } else if ((opts & PF_OPT_QUIET) == 0)
530 fprintf(stderr, "rules cleared\n");
531
532 return (0);
533 }
534
535 void
pfctl_flush_nat(int dev,int opts,char * anchorname)536 pfctl_flush_nat(int dev, int opts, char *anchorname)
537 {
538 int ret;
539
540 ret = pfctl_clear_nat(dev, anchorname);
541 if (ret != 0)
542 err(1, "pfctl_clear_nat");
543 if ((opts & PF_OPT_QUIET) == 0)
544 fprintf(stderr, "nat cleared\n");
545 }
546
547 int
pfctl_clear_altq(int dev,int opts)548 pfctl_clear_altq(int dev, int opts)
549 {
550 struct pfr_buffer t;
551
552 if (!altqsupport)
553 return (-1);
554 memset(&t, 0, sizeof(t));
555 t.pfrb_type = PFRB_TRANS;
556 if (pfctl_add_trans(&t, PF_RULESET_ALTQ, "") ||
557 pfctl_trans(dev, &t, DIOCXBEGIN, 0) ||
558 pfctl_trans(dev, &t, DIOCXCOMMIT, 0))
559 err(1, "pfctl_clear_altq");
560 if ((opts & PF_OPT_QUIET) == 0)
561 fprintf(stderr, "altq cleared\n");
562 return (0);
563 }
564
565 void
pfctl_clear_src_nodes(int dev,int opts)566 pfctl_clear_src_nodes(int dev, int opts)
567 {
568 if (ioctl(dev, DIOCCLRSRCNODES))
569 pfctl_err(opts, 1, "DIOCCLRSRCNODES");
570 if ((opts & PF_OPT_QUIET) == 0)
571 fprintf(stderr, "source tracking entries cleared\n");
572 }
573
574 void
pfctl_clear_iface_states(int dev,const char * iface,int opts)575 pfctl_clear_iface_states(int dev, const char *iface, int opts)
576 {
577 struct pfctl_kill kill;
578 unsigned int killed;
579 int ret;
580
581 memset(&kill, 0, sizeof(kill));
582 if (iface != NULL && strlcpy(kill.ifname, iface,
583 sizeof(kill.ifname)) >= sizeof(kill.ifname))
584 pfctl_errx(opts, 1, "invalid interface: %s", iface);
585
586 if (opts & PF_OPT_KILLMATCH)
587 kill.kill_match = true;
588
589 if ((ret = pfctl_clear_states_h(pfh, &kill, &killed)) != 0)
590 pfctl_err(opts, 1, "DIOCCLRSTATUS");
591 if ((opts & PF_OPT_QUIET) == 0)
592 fprintf(stderr, "%d states cleared\n", killed);
593 }
594
595 struct addrinfo *
pfctl_addrprefix(char * addr,struct pf_addr * mask,int numeric)596 pfctl_addrprefix(char *addr, struct pf_addr *mask, int numeric)
597 {
598 char *p;
599 const char *errstr;
600 int prefix, ret_ga, q, r;
601 struct addrinfo hints, *res;
602
603 bzero(&hints, sizeof(hints));
604 hints.ai_socktype = SOCK_DGRAM; /* dummy */
605 if (numeric)
606 hints.ai_flags = AI_NUMERICHOST;
607
608 if ((p = strchr(addr, '/')) != NULL) {
609 *p++ = '\0';
610 /* prefix only with numeric addresses */
611 hints.ai_flags |= AI_NUMERICHOST;
612 }
613
614 if ((ret_ga = getaddrinfo(addr, NULL, &hints, &res))) {
615 errx(1, "getaddrinfo: %s", gai_strerror(ret_ga));
616 /* NOTREACHED */
617 }
618
619 if (p == NULL)
620 return (res);
621
622 prefix = strtonum(p, 0, res->ai_family == AF_INET6 ? 128 : 32, &errstr);
623 if (errstr)
624 errx(1, "prefix is %s: %s", errstr, p);
625
626 q = prefix >> 3;
627 r = prefix & 7;
628 switch (res->ai_family) {
629 case AF_INET:
630 bzero(&mask->v4, sizeof(mask->v4));
631 mask->v4.s_addr = htonl((u_int32_t)
632 (0xffffffffffULL << (32 - prefix)));
633 break;
634 case AF_INET6:
635 bzero(&mask->v6, sizeof(mask->v6));
636 if (q > 0)
637 memset((void *)&mask->v6, 0xff, q);
638 if (r > 0)
639 *((u_char *)&mask->v6 + q) =
640 (0xff00 >> r) & 0xff;
641 break;
642 }
643
644 return (res);
645 }
646
647 void
pfctl_kill_src_nodes(int dev,int opts)648 pfctl_kill_src_nodes(int dev, int opts)
649 {
650 struct pfioc_src_node_kill psnk;
651 struct addrinfo *res[2], *resp[2];
652 struct sockaddr last_src, last_dst;
653 int killed, sources, dests;
654
655 killed = sources = dests = 0;
656
657 memset(&psnk, 0, sizeof(psnk));
658 memset(&psnk.psnk_src.addr.v.a.mask, 0xff,
659 sizeof(psnk.psnk_src.addr.v.a.mask));
660 memset(&last_src, 0xff, sizeof(last_src));
661 memset(&last_dst, 0xff, sizeof(last_dst));
662
663 res[0] = pfctl_addrprefix(src_node_kill[0],
664 &psnk.psnk_src.addr.v.a.mask, (opts & PF_OPT_NODNS));
665
666 for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) {
667 if (resp[0]->ai_addr == NULL)
668 continue;
669 /* We get lots of duplicates. Catch the easy ones */
670 if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0)
671 continue;
672 last_src = *(struct sockaddr *)resp[0]->ai_addr;
673
674 psnk.psnk_af = resp[0]->ai_family;
675 sources++;
676
677 copy_satopfaddr(&psnk.psnk_src.addr.v.a.addr, resp[0]->ai_addr);
678
679 if (src_node_killers > 1) {
680 dests = 0;
681 memset(&psnk.psnk_dst.addr.v.a.mask, 0xff,
682 sizeof(psnk.psnk_dst.addr.v.a.mask));
683 memset(&last_dst, 0xff, sizeof(last_dst));
684 res[1] = pfctl_addrprefix(src_node_kill[1],
685 &psnk.psnk_dst.addr.v.a.mask,
686 (opts & PF_OPT_NODNS));
687 for (resp[1] = res[1]; resp[1];
688 resp[1] = resp[1]->ai_next) {
689 if (resp[1]->ai_addr == NULL)
690 continue;
691 if (psnk.psnk_af != resp[1]->ai_family)
692 continue;
693
694 if (memcmp(&last_dst, resp[1]->ai_addr,
695 sizeof(last_dst)) == 0)
696 continue;
697 last_dst = *(struct sockaddr *)resp[1]->ai_addr;
698
699 dests++;
700
701 copy_satopfaddr(&psnk.psnk_src.addr.v.a.addr,
702 resp[1]->ai_addr);
703 if (ioctl(dev, DIOCKILLSRCNODES, &psnk))
704 err(1, "DIOCKILLSRCNODES");
705 killed += psnk.psnk_killed;
706 }
707 freeaddrinfo(res[1]);
708 } else {
709 if (ioctl(dev, DIOCKILLSRCNODES, &psnk))
710 err(1, "DIOCKILLSRCNODES");
711 killed += psnk.psnk_killed;
712 }
713 }
714
715 freeaddrinfo(res[0]);
716
717 if ((opts & PF_OPT_QUIET) == 0)
718 fprintf(stderr, "killed %d src nodes from %d sources and %d "
719 "destinations\n", killed, sources, dests);
720 }
721
722 void
pfctl_net_kill_states(int dev,const char * iface,int opts)723 pfctl_net_kill_states(int dev, const char *iface, int opts)
724 {
725 struct pfctl_kill kill;
726 struct addrinfo *res[2], *resp[2];
727 struct sockaddr last_src, last_dst;
728 unsigned int newkilled;
729 int killed, sources, dests;
730 int ret;
731
732 killed = sources = dests = 0;
733
734 memset(&kill, 0, sizeof(kill));
735 memset(&kill.src.addr.v.a.mask, 0xff,
736 sizeof(kill.src.addr.v.a.mask));
737 memset(&last_src, 0xff, sizeof(last_src));
738 memset(&last_dst, 0xff, sizeof(last_dst));
739 if (iface != NULL && strlcpy(kill.ifname, iface,
740 sizeof(kill.ifname)) >= sizeof(kill.ifname))
741 pfctl_errx(opts, 1, "invalid interface: %s", iface);
742
743 if (state_killers == 2 && (strcmp(state_kill[0], "nat") == 0)) {
744 kill.nat = true;
745 state_kill[0] = state_kill[1];
746 state_killers = 1;
747 }
748
749 res[0] = pfctl_addrprefix(state_kill[0],
750 &kill.src.addr.v.a.mask, (opts & PF_OPT_NODNS));
751
752 if (opts & PF_OPT_KILLMATCH)
753 kill.kill_match = true;
754
755 for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) {
756 if (resp[0]->ai_addr == NULL)
757 continue;
758 /* We get lots of duplicates. Catch the easy ones */
759 if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0)
760 continue;
761 last_src = *(struct sockaddr *)resp[0]->ai_addr;
762
763 kill.af = resp[0]->ai_family;
764 sources++;
765
766 copy_satopfaddr(&kill.src.addr.v.a.addr, resp[0]->ai_addr);
767
768 if (state_killers > 1) {
769 dests = 0;
770 memset(&kill.dst.addr.v.a.mask, 0xff,
771 sizeof(kill.dst.addr.v.a.mask));
772 memset(&last_dst, 0xff, sizeof(last_dst));
773 res[1] = pfctl_addrprefix(state_kill[1],
774 &kill.dst.addr.v.a.mask,
775 (opts & PF_OPT_NODNS));
776 for (resp[1] = res[1]; resp[1];
777 resp[1] = resp[1]->ai_next) {
778 if (resp[1]->ai_addr == NULL)
779 continue;
780 if (kill.af != resp[1]->ai_family)
781 continue;
782
783 if (memcmp(&last_dst, resp[1]->ai_addr,
784 sizeof(last_dst)) == 0)
785 continue;
786 last_dst = *(struct sockaddr *)resp[1]->ai_addr;
787
788 dests++;
789
790 copy_satopfaddr(&kill.src.addr.v.a.addr,
791 resp[1]->ai_addr);
792
793 if ((ret = pfctl_kill_states_h(pfh, &kill, &newkilled)) != 0)
794 pfctl_errx(opts, 1, "DIOCKILLSTATES");
795 killed += newkilled;
796 }
797 freeaddrinfo(res[1]);
798 } else {
799 if ((ret = pfctl_kill_states_h(pfh, &kill, &newkilled)) != 0)
800 pfctl_errx(opts, 1, "DIOCKILLSTATES");
801 killed += newkilled;
802 }
803 }
804
805 freeaddrinfo(res[0]);
806
807 if ((opts & PF_OPT_QUIET) == 0)
808 fprintf(stderr, "killed %d states from %d sources and %d "
809 "destinations\n", killed, sources, dests);
810 }
811
812 void
pfctl_gateway_kill_states(int dev,const char * iface,int opts)813 pfctl_gateway_kill_states(int dev, const char *iface, int opts)
814 {
815 struct pfctl_kill kill;
816 struct addrinfo *res, *resp;
817 struct sockaddr last_src;
818 unsigned int newkilled;
819 int killed = 0;
820
821 if (state_killers != 2 || (strlen(state_kill[1]) == 0)) {
822 warnx("no gateway specified");
823 usage();
824 }
825
826 memset(&kill, 0, sizeof(kill));
827 memset(&kill.rt_addr.addr.v.a.mask, 0xff,
828 sizeof(kill.rt_addr.addr.v.a.mask));
829 memset(&last_src, 0xff, sizeof(last_src));
830 if (iface != NULL && strlcpy(kill.ifname, iface,
831 sizeof(kill.ifname)) >= sizeof(kill.ifname))
832 pfctl_errx(opts, 1, "invalid interface: %s", iface);
833
834 if (opts & PF_OPT_KILLMATCH)
835 kill.kill_match = true;
836
837 res = pfctl_addrprefix(state_kill[1], &kill.rt_addr.addr.v.a.mask,
838 (opts & PF_OPT_NODNS));
839
840 for (resp = res; resp; resp = resp->ai_next) {
841 if (resp->ai_addr == NULL)
842 continue;
843 /* We get lots of duplicates. Catch the easy ones */
844 if (memcmp(&last_src, resp->ai_addr, sizeof(last_src)) == 0)
845 continue;
846 last_src = *(struct sockaddr *)resp->ai_addr;
847
848 kill.af = resp->ai_family;
849
850 copy_satopfaddr(&kill.rt_addr.addr.v.a.addr,
851 resp->ai_addr);
852 if (pfctl_kill_states_h(pfh, &kill, &newkilled))
853 pfctl_errx(opts, 1, "DIOCKILLSTATES");
854 killed += newkilled;
855 }
856
857 freeaddrinfo(res);
858
859 if ((opts & PF_OPT_QUIET) == 0)
860 fprintf(stderr, "killed %d states\n", killed);
861 }
862
863 void
pfctl_label_kill_states(int dev,const char * iface,int opts)864 pfctl_label_kill_states(int dev, const char *iface, int opts)
865 {
866 struct pfctl_kill kill;
867 unsigned int killed;
868 int ret;
869
870 if (state_killers != 2 || (strlen(state_kill[1]) == 0)) {
871 warnx("no label specified");
872 usage();
873 }
874 memset(&kill, 0, sizeof(kill));
875 if (iface != NULL && strlcpy(kill.ifname, iface,
876 sizeof(kill.ifname)) >= sizeof(kill.ifname))
877 pfctl_errx(opts, 1, "invalid interface: %s", iface);
878
879 if (opts & PF_OPT_KILLMATCH)
880 kill.kill_match = true;
881
882 if (strlcpy(kill.label, state_kill[1], sizeof(kill.label)) >=
883 sizeof(kill.label))
884 errx(1, "label too long: %s", state_kill[1]);
885
886 if ((ret = pfctl_kill_states_h(pfh, &kill, &killed)) != 0)
887 pfctl_errx(opts, 1, "DIOCKILLSTATES");
888
889 if ((opts & PF_OPT_QUIET) == 0)
890 fprintf(stderr, "killed %d states\n", killed);
891 }
892
893 void
pfctl_id_kill_states(int dev,const char * iface,int opts)894 pfctl_id_kill_states(int dev, const char *iface, int opts)
895 {
896 struct pfctl_kill kill;
897 unsigned int killed;
898 int ret;
899
900 if (state_killers != 2 || (strlen(state_kill[1]) == 0)) {
901 warnx("no id specified");
902 usage();
903 }
904
905 memset(&kill, 0, sizeof(kill));
906
907 if (opts & PF_OPT_KILLMATCH)
908 kill.kill_match = true;
909
910 if ((sscanf(state_kill[1], "%jx/%x",
911 &kill.cmp.id, &kill.cmp.creatorid)) == 2) {
912 }
913 else if ((sscanf(state_kill[1], "%jx", &kill.cmp.id)) == 1) {
914 kill.cmp.creatorid = 0;
915 } else {
916 warnx("wrong id format specified");
917 usage();
918 }
919 if (kill.cmp.id == 0) {
920 warnx("cannot kill id 0");
921 usage();
922 }
923
924 if ((ret = pfctl_kill_states_h(pfh, &kill, &killed)) != 0)
925 pfctl_errx(opts, 1, "DIOCKILLSTATES");
926
927 if ((opts & PF_OPT_QUIET) == 0)
928 fprintf(stderr, "killed %d states\n", killed);
929 }
930
931 void
pfctl_key_kill_states(int dev,const char * iface,int opts)932 pfctl_key_kill_states(int dev, const char *iface, int opts)
933 {
934 struct pfctl_kill kill;
935 char *s, *token, *tokens[4];
936 struct protoent *p;
937 u_int i, sidx, didx;
938 int ret, killed;
939
940 if (state_killers != 2 || (strlen(state_kill[1]) == 0)) {
941 warnx("no key specified");
942 usage();
943 }
944 memset(&kill, 0, sizeof(kill));
945
946 if (iface != NULL &&
947 strlcpy(kill.ifname, iface, sizeof(kill.ifname)) >=
948 sizeof(kill.ifname))
949 pfctl_errx(opts, 1, "invalid interface: %s", iface);
950
951 s = strdup(state_kill[1]);
952 if (!s)
953 errx(1, "%s: strdup", __func__);
954 i = 0;
955 while ((token = strsep(&s, " \t")) != NULL)
956 if (*token != '\0') {
957 if (i < 4)
958 tokens[i] = token;
959 i++;
960 }
961 if (i != 4)
962 errx(1, "%s: key must be "
963 "\"protocol host1:port1 direction host2:port2\" format",
964 __func__);
965
966 if ((p = getprotobyname(tokens[0])) == NULL)
967 errx(1, "invalid protocol: %s", tokens[0]);
968 kill.proto = p->p_proto;
969
970 if (strcmp(tokens[2], "->") == 0) {
971 sidx = 1;
972 didx = 3;
973 } else if (strcmp(tokens[2], "<-") == 0) {
974 sidx = 3;
975 didx = 1;
976 } else
977 errx(1, "invalid direction: %s", tokens[2]);
978
979 if (pfctl_parse_host(tokens[sidx], &kill.src) == -1)
980 errx(1, "invalid host: %s", tokens[sidx]);
981 if (pfctl_parse_host(tokens[didx], &kill.dst) == -1)
982 errx(1, "invalid host: %s", tokens[didx]);
983
984 if ((ret = pfctl_kill_states_h(pfh, &kill, &killed)) != 0)
985 pfctl_errx(opts, 1, "DIOCKILLSTATES");
986
987 if ((opts & PF_OPT_QUIET) == 0)
988 fprintf(stderr, "killed %d states\n", killed);
989 }
990
991 int
pfctl_parse_host(char * str,struct pf_rule_addr * addr)992 pfctl_parse_host(char *str, struct pf_rule_addr *addr)
993 {
994 char *s = NULL, *sbs, *sbe;
995 struct addrinfo hints, *ai;
996
997 s = strdup(str);
998 if (!s)
999 errx(1, "pfctl_parse_host: strdup");
1000
1001 memset(&hints, 0, sizeof(hints));
1002 hints.ai_socktype = SOCK_DGRAM; /* dummy */
1003 hints.ai_flags = AI_NUMERICHOST;
1004
1005 if ((sbs = strchr(s, '[')) != NULL && (sbe = strrchr(s, ']')) != NULL) {
1006 hints.ai_family = AF_INET6;
1007 *(sbs++) = *sbe = '\0';
1008 } else if ((sbs = strchr(s, ':')) != NULL) {
1009 hints.ai_family = AF_INET;
1010 *(sbs++) = '\0';
1011 } else {
1012 /* Assume that no ':<number>' means port 0 */
1013 }
1014
1015 if (getaddrinfo(s, sbs, &hints, &ai) != 0)
1016 goto error;
1017
1018 copy_satopfaddr(&addr->addr.v.a.addr, ai->ai_addr);
1019 addr->port[0] = ai->ai_family == AF_INET6 ?
1020 ((struct sockaddr_in6 *)ai->ai_addr)->sin6_port :
1021 ((struct sockaddr_in *)ai->ai_addr)->sin_port;
1022 freeaddrinfo(ai);
1023 free(s);
1024
1025 memset(&addr->addr.v.a.mask, 0xff, sizeof(struct pf_addr));
1026 addr->port_op = PF_OP_EQ;
1027 addr->addr.type = PF_ADDR_ADDRMASK;
1028
1029 return (0);
1030
1031 error:
1032 free(s);
1033 return (-1);
1034 }
1035
1036 int
pfctl_get_pool(int dev,struct pfctl_pool * pool,u_int32_t nr,u_int32_t ticket,int r_action,const char * anchorname,int which)1037 pfctl_get_pool(int dev, struct pfctl_pool *pool, u_int32_t nr,
1038 u_int32_t ticket, int r_action, const char *anchorname, int which)
1039 {
1040 struct pfioc_pooladdr pp;
1041 struct pf_pooladdr *pa;
1042 u_int32_t pnr, mpnr;
1043 int ret;
1044
1045 memset(&pp, 0, sizeof(pp));
1046 if ((ret = pfctl_get_addrs(pfh, ticket, nr, r_action, anchorname, &mpnr, which)) != 0) {
1047 warnc(ret, "DIOCGETADDRS");
1048 return (-1);
1049 }
1050
1051 TAILQ_INIT(&pool->list);
1052 for (pnr = 0; pnr < mpnr; ++pnr) {
1053 if ((ret = pfctl_get_addr(pfh, ticket, nr, r_action, anchorname, pnr, &pp, which)) != 0) {
1054 warnc(ret, "DIOCGETADDR");
1055 return (-1);
1056 }
1057 pa = calloc(1, sizeof(struct pf_pooladdr));
1058 if (pa == NULL)
1059 err(1, "calloc");
1060 bcopy(&pp.addr, pa, sizeof(struct pf_pooladdr));
1061 TAILQ_INSERT_TAIL(&pool->list, pa, entries);
1062 }
1063
1064 return (0);
1065 }
1066
1067 void
pfctl_move_pool(struct pfctl_pool * src,struct pfctl_pool * dst)1068 pfctl_move_pool(struct pfctl_pool *src, struct pfctl_pool *dst)
1069 {
1070 struct pf_pooladdr *pa;
1071
1072 while ((pa = TAILQ_FIRST(&src->list)) != NULL) {
1073 TAILQ_REMOVE(&src->list, pa, entries);
1074 TAILQ_INSERT_TAIL(&dst->list, pa, entries);
1075 }
1076 }
1077
1078 void
pfctl_clear_pool(struct pfctl_pool * pool)1079 pfctl_clear_pool(struct pfctl_pool *pool)
1080 {
1081 struct pf_pooladdr *pa;
1082
1083 while ((pa = TAILQ_FIRST(&pool->list)) != NULL) {
1084 TAILQ_REMOVE(&pool->list, pa, entries);
1085 free(pa);
1086 }
1087 }
1088
1089 void
pfctl_print_eth_rule_counters(struct pfctl_eth_rule * rule,int opts)1090 pfctl_print_eth_rule_counters(struct pfctl_eth_rule *rule, int opts)
1091 {
1092 if (opts & PF_OPT_VERBOSE) {
1093 printf(" [ Evaluations: %-8llu Packets: %-8llu "
1094 "Bytes: %-10llu]\n",
1095 (unsigned long long)rule->evaluations,
1096 (unsigned long long)(rule->packets[0] +
1097 rule->packets[1]),
1098 (unsigned long long)(rule->bytes[0] +
1099 rule->bytes[1]));
1100 }
1101 if (opts & PF_OPT_VERBOSE2) {
1102 char timestr[30];
1103
1104 if (rule->last_active_timestamp != 0) {
1105 bcopy(ctime(&rule->last_active_timestamp), timestr,
1106 sizeof(timestr));
1107 *strchr(timestr, '\n') = '\0';
1108 } else {
1109 snprintf(timestr, sizeof(timestr), "N/A");
1110 }
1111 printf(" [ Last Active Time: %s ]\n", timestr);
1112 }
1113 }
1114
1115 void
pfctl_print_rule_counters(struct pfctl_rule * rule,int opts)1116 pfctl_print_rule_counters(struct pfctl_rule *rule, int opts)
1117 {
1118 if (opts & PF_OPT_DEBUG) {
1119 const char *t[PF_SKIP_COUNT] = { "i", "d", "f",
1120 "p", "sa", "da", "sp", "dp" };
1121 int i;
1122
1123 printf(" [ Skip steps: ");
1124 for (i = 0; i < PF_SKIP_COUNT; ++i) {
1125 if (rule->skip[i].nr == rule->nr + 1)
1126 continue;
1127 printf("%s=", t[i]);
1128 if (rule->skip[i].nr == -1)
1129 printf("end ");
1130 else
1131 printf("%u ", rule->skip[i].nr);
1132 }
1133 printf("]\n");
1134
1135 printf(" [ queue: qname=%s qid=%u pqname=%s pqid=%u ]\n",
1136 rule->qname, rule->qid, rule->pqname, rule->pqid);
1137 }
1138 if (opts & PF_OPT_VERBOSE) {
1139 printf(" [ Evaluations: %-8llu Packets: %-8llu "
1140 "Bytes: %-10llu States: %-6ju]\n",
1141 (unsigned long long)rule->evaluations,
1142 (unsigned long long)(rule->packets[0] +
1143 rule->packets[1]),
1144 (unsigned long long)(rule->bytes[0] +
1145 rule->bytes[1]), (uintmax_t)rule->states_cur);
1146 printf(" [ Source Nodes: %-6ju "
1147 "Limit: %-6ju "
1148 "NAT/RDR: %-6ju "
1149 "Route: %-6ju "
1150 "]\n",
1151 (uintmax_t)rule->src_nodes,
1152 (uintmax_t)rule->src_nodes_type[PF_SN_LIMIT],
1153 (uintmax_t)rule->src_nodes_type[PF_SN_NAT],
1154 (uintmax_t)rule->src_nodes_type[PF_SN_ROUTE]);
1155 if (!(opts & PF_OPT_DEBUG))
1156 printf(" [ Inserted: uid %u pid %u "
1157 "State Creations: %-6ju]\n",
1158 (unsigned)rule->cuid, (unsigned)rule->cpid,
1159 (uintmax_t)rule->states_tot);
1160 }
1161 if (opts & PF_OPT_VERBOSE2) {
1162 char timestr[30];
1163 if (rule->last_active_timestamp != 0) {
1164 bcopy(ctime(&rule->last_active_timestamp), timestr,
1165 sizeof(timestr));
1166 *strchr(timestr, '\n') = '\0';
1167 } else {
1168 snprintf(timestr, sizeof(timestr), "N/A");
1169 }
1170 printf(" [ Last Active Time: %s ]\n", timestr);
1171 }
1172 }
1173
1174 void
pfctl_print_title(char * title)1175 pfctl_print_title(char *title)
1176 {
1177 if (!first_title)
1178 printf("\n");
1179 first_title = 0;
1180 printf("%s\n", title);
1181 }
1182
1183 int
pfctl_show_eth_rules(int dev,char * path,int opts,enum pfctl_show format,char * anchorname,int depth,int wildcard)1184 pfctl_show_eth_rules(int dev, char *path, int opts, enum pfctl_show format,
1185 char *anchorname, int depth, int wildcard)
1186 {
1187 char anchor_call[MAXPATHLEN];
1188 struct pfctl_eth_rules_info info;
1189 struct pfctl_eth_rule rule;
1190 int brace;
1191 int dotitle = opts & PF_OPT_SHOWALL;
1192 int len = strlen(path);
1193 int ret;
1194 char *npath, *p;
1195
1196 /*
1197 * Truncate a trailing / and * on an anchorname before searching for
1198 * the ruleset, this is syntactic sugar that doesn't actually make it
1199 * to the kernel.
1200 */
1201 if ((p = strrchr(anchorname, '/')) != NULL &&
1202 p[1] == '*' && p[2] == '\0') {
1203 p[0] = '\0';
1204 }
1205
1206 if (anchorname[0] == '/') {
1207 if ((npath = calloc(1, MAXPATHLEN)) == NULL)
1208 errx(1, "calloc");
1209 snprintf(npath, MAXPATHLEN, "%s", anchorname);
1210 } else {
1211 if (path[0])
1212 snprintf(&path[len], MAXPATHLEN - len, "/%s", anchorname);
1213 else
1214 snprintf(&path[len], MAXPATHLEN - len, "%s", anchorname);
1215 npath = path;
1216 }
1217
1218 /*
1219 * If this anchor was called with a wildcard path, go through
1220 * the rulesets in the anchor rather than the rules.
1221 */
1222 if (wildcard && (opts & PF_OPT_RECURSE)) {
1223 struct pfctl_eth_rulesets_info ri;
1224 u_int32_t mnr, nr;
1225
1226 if ((ret = pfctl_get_eth_rulesets_info(dev, &ri, npath)) != 0) {
1227 if (ret == EINVAL) {
1228 fprintf(stderr, "Anchor '%s' "
1229 "not found.\n", anchorname);
1230 } else {
1231 warnc(ret, "DIOCGETETHRULESETS");
1232 return (-1);
1233 }
1234 }
1235 mnr = ri.nr;
1236
1237 pfctl_print_eth_rule_counters(&rule, opts);
1238 for (nr = 0; nr < mnr; ++nr) {
1239 struct pfctl_eth_ruleset_info rs;
1240
1241 if ((ret = pfctl_get_eth_ruleset(dev, npath, nr, &rs)) != 0)
1242 errc(1, ret, "DIOCGETETHRULESET");
1243 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1244 printf("anchor \"%s\" all {\n", rs.name);
1245 pfctl_show_eth_rules(dev, npath, opts,
1246 format, rs.name, depth + 1, 0);
1247 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1248 printf("}\n");
1249 }
1250 path[len] = '\0';
1251 return (0);
1252 }
1253
1254 if ((ret = pfctl_get_eth_rules_info(dev, &info, path)) != 0) {
1255 warnc(ret, "DIOCGETETHRULES");
1256 return (-1);
1257 }
1258 for (int nr = 0; nr < info.nr; nr++) {
1259 brace = 0;
1260 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1261 if ((ret = pfctl_get_eth_rule(dev, nr, info.ticket, path, &rule,
1262 opts & PF_OPT_CLRRULECTRS, anchor_call)) != 0) {
1263 warnc(ret, "DIOCGETETHRULE");
1264 return (-1);
1265 }
1266 if (anchor_call[0] &&
1267 ((((p = strrchr(anchor_call, '_')) != NULL) &&
1268 (p == anchor_call ||
1269 *(--p) == '/')) || (opts & PF_OPT_RECURSE))) {
1270 brace++;
1271 int aclen = strlen(anchor_call);
1272 if (anchor_call[aclen - 1] == '*')
1273 anchor_call[aclen - 2] = '\0';
1274 }
1275 p = &anchor_call[0];
1276 if (dotitle) {
1277 pfctl_print_title("ETH RULES:");
1278 dotitle = 0;
1279 }
1280 print_eth_rule(&rule, anchor_call,
1281 opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG));
1282 if (brace)
1283 printf(" {\n");
1284 else
1285 printf("\n");
1286 pfctl_print_eth_rule_counters(&rule, opts);
1287 if (brace) {
1288 pfctl_show_eth_rules(dev, path, opts, format,
1289 p, depth + 1, rule.anchor_wildcard);
1290 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1291 printf("}\n");
1292 }
1293 }
1294
1295 path[len] = '\0';
1296 return (0);
1297 }
1298
1299 int
pfctl_show_rules(int dev,char * path,int opts,enum pfctl_show format,char * anchorname,int depth,int wildcard)1300 pfctl_show_rules(int dev, char *path, int opts, enum pfctl_show format,
1301 char *anchorname, int depth, int wildcard)
1302 {
1303 struct pfctl_rules_info ri;
1304 struct pfctl_rule rule;
1305 char anchor_call[MAXPATHLEN];
1306 u_int32_t nr, header = 0;
1307 int rule_numbers = opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG);
1308 int numeric = opts & PF_OPT_NUMERIC;
1309 int len = strlen(path), ret = 0;
1310 char *npath, *p;
1311
1312 /*
1313 * Truncate a trailing / and * on an anchorname before searching for
1314 * the ruleset, this is syntactic sugar that doesn't actually make it
1315 * to the kernel.
1316 */
1317 if ((p = strrchr(anchorname, '/')) != NULL &&
1318 p[1] == '*' && p[2] == '\0') {
1319 p[0] = '\0';
1320 }
1321
1322 if (anchorname[0] == '/') {
1323 if ((npath = calloc(1, MAXPATHLEN)) == NULL)
1324 errx(1, "calloc");
1325 strlcpy(npath, anchorname, MAXPATHLEN);
1326 } else {
1327 if (path[0])
1328 snprintf(&path[len], MAXPATHLEN - len, "/%s", anchorname);
1329 else
1330 snprintf(&path[len], MAXPATHLEN - len, "%s", anchorname);
1331 npath = path;
1332 }
1333
1334 /*
1335 * If this anchor was called with a wildcard path, go through
1336 * the rulesets in the anchor rather than the rules.
1337 */
1338 if (wildcard && (opts & PF_OPT_RECURSE)) {
1339 struct pfioc_ruleset prs;
1340 u_int32_t mnr, nr;
1341
1342 memset(&prs, 0, sizeof(prs));
1343 if ((ret = pfctl_get_rulesets(pfh, npath, &mnr)) != 0)
1344 errx(1, "%s", pf_strerror(ret));
1345
1346 for (nr = 0; nr < mnr; ++nr) {
1347 if ((ret = pfctl_get_ruleset(pfh, npath, nr, &prs)) != 0)
1348 errx(1, "%s", pf_strerror(ret));
1349 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1350 printf("anchor \"%s\" all {\n", prs.name);
1351 pfctl_show_rules(dev, npath, opts,
1352 format, prs.name, depth + 1, 0);
1353 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1354 printf("}\n");
1355 }
1356 path[len] = '\0';
1357 return (0);
1358 }
1359
1360 if (opts & PF_OPT_SHOWALL) {
1361 ret = pfctl_get_rules_info_h(pfh, &ri, PF_PASS, path);
1362 if (ret != 0) {
1363 warnx("%s", pf_strerror(ret));
1364 goto error;
1365 }
1366 header++;
1367 }
1368 ret = pfctl_get_rules_info_h(pfh, &ri, PF_SCRUB, path);
1369 if (ret != 0) {
1370 warnx("%s", pf_strerror(ret));
1371 goto error;
1372 }
1373 if (opts & PF_OPT_SHOWALL) {
1374 if (format == PFCTL_SHOW_RULES && (ri.nr > 0 || header))
1375 pfctl_print_title("FILTER RULES:");
1376 else if (format == PFCTL_SHOW_LABELS && labels)
1377 pfctl_print_title("LABEL COUNTERS:");
1378 }
1379
1380 for (nr = 0; nr < ri.nr; ++nr) {
1381 if ((ret = pfctl_get_clear_rule_h(pfh, nr, ri.ticket, path, PF_SCRUB,
1382 &rule, anchor_call, opts & PF_OPT_CLRRULECTRS)) != 0) {
1383 warnc(ret, "DIOCGETRULENV");
1384 goto error;
1385 }
1386
1387 if (pfctl_get_pool(dev, &rule.rdr,
1388 nr, ri.ticket, PF_SCRUB, path, PF_RDR) != 0)
1389 goto error;
1390
1391 if (pfctl_get_pool(dev, &rule.nat,
1392 nr, ri.ticket, PF_SCRUB, path, PF_NAT) != 0)
1393 goto error;
1394
1395 if (pfctl_get_pool(dev, &rule.route,
1396 nr, ri.ticket, PF_SCRUB, path, PF_RT) != 0)
1397 goto error;
1398
1399 switch (format) {
1400 case PFCTL_SHOW_LABELS:
1401 break;
1402 case PFCTL_SHOW_RULES:
1403 if (rule.label[0][0] && (opts & PF_OPT_SHOWALL))
1404 labels = 1;
1405 print_rule(&rule, anchor_call, rule_numbers, numeric);
1406 printf("\n");
1407 pfctl_print_rule_counters(&rule, opts);
1408 break;
1409 case PFCTL_SHOW_NOTHING:
1410 break;
1411 }
1412 pfctl_clear_pool(&rule.rdr);
1413 pfctl_clear_pool(&rule.nat);
1414 pfctl_clear_pool(&rule.route);
1415 }
1416 ret = pfctl_get_rules_info_h(pfh, &ri, PF_PASS, path);
1417 if (ret != 0) {
1418 warnc(ret, "DIOCGETRULES");
1419 goto error;
1420 }
1421 for (nr = 0; nr < ri.nr; ++nr) {
1422 if ((ret = pfctl_get_clear_rule_h(pfh, nr, ri.ticket, path, PF_PASS,
1423 &rule, anchor_call, opts & PF_OPT_CLRRULECTRS)) != 0) {
1424 warnc(ret, "DIOCGETRULE");
1425 goto error;
1426 }
1427
1428 if (pfctl_get_pool(dev, &rule.rdr,
1429 nr, ri.ticket, PF_PASS, path, PF_RDR) != 0)
1430 goto error;
1431
1432 if (pfctl_get_pool(dev, &rule.nat,
1433 nr, ri.ticket, PF_PASS, path, PF_NAT) != 0)
1434 goto error;
1435
1436 if (pfctl_get_pool(dev, &rule.route,
1437 nr, ri.ticket, PF_PASS, path, PF_RT) != 0)
1438 goto error;
1439
1440 switch (format) {
1441 case PFCTL_SHOW_LABELS: {
1442 bool show = false;
1443 int i = 0;
1444
1445 while (rule.label[i][0]) {
1446 printf("%s ", rule.label[i++]);
1447 show = true;
1448 }
1449
1450 if (show) {
1451 printf("%llu %llu %llu %llu"
1452 " %llu %llu %llu %ju\n",
1453 (unsigned long long)rule.evaluations,
1454 (unsigned long long)(rule.packets[0] +
1455 rule.packets[1]),
1456 (unsigned long long)(rule.bytes[0] +
1457 rule.bytes[1]),
1458 (unsigned long long)rule.packets[0],
1459 (unsigned long long)rule.bytes[0],
1460 (unsigned long long)rule.packets[1],
1461 (unsigned long long)rule.bytes[1],
1462 (uintmax_t)rule.states_tot);
1463 }
1464
1465 if (anchor_call[0] &&
1466 (((p = strrchr(anchor_call, '/')) ?
1467 p[1] == '_' : anchor_call[0] == '_') ||
1468 opts & PF_OPT_RECURSE)) {
1469 pfctl_show_rules(dev, npath, opts, format,
1470 anchor_call, depth, rule.anchor_wildcard);
1471 }
1472 break;
1473 }
1474 case PFCTL_SHOW_RULES:
1475 if (rule.label[0][0] && (opts & PF_OPT_SHOWALL))
1476 labels = 1;
1477 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1478 print_rule(&rule, anchor_call, rule_numbers, numeric);
1479
1480 /*
1481 * If this is a 'unnamed' brace notation
1482 * anchor, OR the user has explicitly requested
1483 * recursion, print it recursively.
1484 */
1485 if (anchor_call[0] &&
1486 (((p = strrchr(anchor_call, '/')) ?
1487 p[1] == '_' : anchor_call[0] == '_') ||
1488 opts & PF_OPT_RECURSE)) {
1489 printf(" {\n");
1490 pfctl_print_rule_counters(&rule, opts);
1491 pfctl_show_rules(dev, npath, opts, format,
1492 anchor_call, depth + 1,
1493 rule.anchor_wildcard);
1494 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1495 printf("}\n");
1496 } else {
1497 printf("\n");
1498 pfctl_print_rule_counters(&rule, opts);
1499 }
1500 break;
1501 case PFCTL_SHOW_NOTHING:
1502 break;
1503 }
1504 pfctl_clear_pool(&rule.rdr);
1505 pfctl_clear_pool(&rule.nat);
1506 }
1507
1508 error:
1509 path[len] = '\0';
1510 return (ret);
1511 }
1512
1513 int
pfctl_show_nat(int dev,const char * path,int opts,char * anchorname,int depth,int wildcard)1514 pfctl_show_nat(int dev, const char *path, int opts, char *anchorname, int depth,
1515 int wildcard)
1516 {
1517 struct pfctl_rules_info ri;
1518 struct pfctl_rule rule;
1519 char anchor_call[MAXPATHLEN];
1520 u_int32_t nr;
1521 static int nattype[3] = { PF_NAT, PF_RDR, PF_BINAT };
1522 int i, dotitle = opts & PF_OPT_SHOWALL;
1523 int ret;
1524 int len = strlen(path);
1525 char *npath, *p;
1526
1527 /*
1528 * Truncate a trailing / and * on an anchorname before searching for
1529 * the ruleset, this is syntactic sugar that doesn't actually make it
1530 * to the kernel.
1531 */
1532 if ((p = strrchr(anchorname, '/')) != NULL &&
1533 p[1] == '*' && p[2] == '\0') {
1534 p[0] = '\0';
1535 }
1536
1537 if ((npath = calloc(1, MAXPATHLEN)) == NULL)
1538 errx(1, "calloc");
1539
1540 if (anchorname[0] == '/') {
1541 snprintf(npath, MAXPATHLEN, "%s", anchorname);
1542 } else {
1543 snprintf(npath, MAXPATHLEN, "%s", path);
1544 if (npath[0])
1545 snprintf(&npath[len], MAXPATHLEN - len, "/%s", anchorname);
1546 else
1547 snprintf(&npath[len], MAXPATHLEN - len, "%s", anchorname);
1548 }
1549
1550 /*
1551 * If this anchor was called with a wildcard path, go through
1552 * the rulesets in the anchor rather than the rules.
1553 */
1554 if (wildcard && (opts & PF_OPT_RECURSE)) {
1555 struct pfioc_ruleset prs;
1556 u_int32_t mnr, nr;
1557 memset(&prs, 0, sizeof(prs));
1558 if ((ret = pfctl_get_rulesets(pfh, npath, &mnr)) != 0) {
1559 if (ret == EINVAL)
1560 fprintf(stderr, "NAT anchor '%s' "
1561 "not found.\n", anchorname);
1562 else
1563 errx(1, "%s", pf_strerror(ret));
1564 }
1565
1566 for (nr = 0; nr < mnr; ++nr) {
1567 if ((ret = pfctl_get_ruleset(pfh, npath, nr, &prs)) != 0)
1568 errx(1, "%s", pf_strerror(ret));
1569 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1570 printf("nat-anchor \"%s\" all {\n", prs.name);
1571 pfctl_show_nat(dev, npath, opts,
1572 prs.name, depth + 1, 0);
1573 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1574 printf("}\n");
1575 }
1576 npath[len] = '\0';
1577 return (0);
1578 }
1579
1580 for (i = 0; i < 3; i++) {
1581 ret = pfctl_get_rules_info_h(pfh, &ri, nattype[i], npath);
1582 if (ret != 0) {
1583 warnc(ret, "DIOCGETRULES");
1584 return (-1);
1585 }
1586 for (nr = 0; nr < ri.nr; ++nr) {
1587 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1588
1589 if ((ret = pfctl_get_rule_h(pfh, nr, ri.ticket, npath,
1590 nattype[i], &rule, anchor_call)) != 0) {
1591 warnc(ret, "DIOCGETRULE");
1592 return (-1);
1593 }
1594 if (pfctl_get_pool(dev, &rule.rdr, nr,
1595 ri.ticket, nattype[i], npath, PF_RDR) != 0)
1596 return (-1);
1597 if (pfctl_get_pool(dev, &rule.nat, nr,
1598 ri.ticket, nattype[i], npath, PF_NAT) != 0)
1599 return (-1);
1600 if (pfctl_get_pool(dev, &rule.route, nr,
1601 ri.ticket, nattype[i], npath, PF_RT) != 0)
1602 return (-1);
1603
1604 if (dotitle) {
1605 pfctl_print_title("TRANSLATION RULES:");
1606 dotitle = 0;
1607 }
1608 print_rule(&rule, anchor_call,
1609 opts & PF_OPT_VERBOSE2, opts & PF_OPT_NUMERIC);
1610 if (anchor_call[0] &&
1611 (((p = strrchr(anchor_call, '/')) ?
1612 p[1] == '_' : anchor_call[0] == '_') ||
1613 opts & PF_OPT_RECURSE)) {
1614 printf(" {\n");
1615 pfctl_print_rule_counters(&rule, opts);
1616 pfctl_show_nat(dev, npath, opts, anchor_call,
1617 depth + 1, rule.anchor_wildcard);
1618 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1619 printf("}\n");
1620 } else {
1621 printf("\n");
1622 pfctl_print_rule_counters(&rule, opts);
1623 }
1624 }
1625 }
1626 return (0);
1627 }
1628
1629 static int
pfctl_print_src_node(struct pfctl_src_node * sn,void * arg)1630 pfctl_print_src_node(struct pfctl_src_node *sn, void *arg)
1631 {
1632 int *opts = (int *)arg;
1633
1634 if (*opts & PF_OPT_SHOWALL) {
1635 pfctl_print_title("SOURCE TRACKING NODES:");
1636 *opts &= ~PF_OPT_SHOWALL;
1637 }
1638
1639 print_src_node(sn, *opts);
1640
1641 return (0);
1642 }
1643
1644 int
pfctl_show_src_nodes(int dev,int opts)1645 pfctl_show_src_nodes(int dev, int opts)
1646 {
1647 int error;
1648
1649 error = pfctl_get_srcnodes(pfh, pfctl_print_src_node, &opts);
1650
1651 return (error);
1652 }
1653
1654 struct pfctl_show_state_arg {
1655 int opts;
1656 int dotitle;
1657 const char *iface;
1658 };
1659
1660 static int
pfctl_show_state(struct pfctl_state * s,void * arg)1661 pfctl_show_state(struct pfctl_state *s, void *arg)
1662 {
1663 struct pfctl_show_state_arg *a = (struct pfctl_show_state_arg *)arg;
1664
1665 if (a->dotitle) {
1666 pfctl_print_title("STATES:");
1667 a->dotitle = 0;
1668 }
1669 print_state(s, a->opts);
1670
1671 return (0);
1672 }
1673
1674 int
pfctl_show_states(int dev,const char * iface,int opts)1675 pfctl_show_states(int dev, const char *iface, int opts)
1676 {
1677 struct pfctl_show_state_arg arg;
1678 struct pfctl_state_filter filter = {};
1679
1680 if (iface != NULL)
1681 strlcpy(filter.ifname, iface, IFNAMSIZ);
1682
1683 arg.opts = opts;
1684 arg.dotitle = opts & PF_OPT_SHOWALL;
1685 arg.iface = iface;
1686
1687 if (pfctl_get_filtered_states_iter(&filter, pfctl_show_state, &arg))
1688 return (-1);
1689
1690 return (0);
1691 }
1692
1693 int
pfctl_show_status(int dev,int opts)1694 pfctl_show_status(int dev, int opts)
1695 {
1696 struct pfctl_status *status;
1697 struct pfctl_syncookies cookies;
1698 int ret;
1699
1700 if ((status = pfctl_get_status_h(pfh)) == NULL) {
1701 warn("DIOCGETSTATUS");
1702 return (-1);
1703 }
1704 if ((ret = pfctl_get_syncookies(dev, &cookies)) != 0) {
1705 pfctl_free_status(status);
1706 warnc(ret, "DIOCGETSYNCOOKIES");
1707 return (-1);
1708 }
1709 if (opts & PF_OPT_SHOWALL)
1710 pfctl_print_title("INFO:");
1711 print_status(status, &cookies, opts);
1712 pfctl_free_status(status);
1713 return (0);
1714 }
1715
1716 int
pfctl_show_running(int dev)1717 pfctl_show_running(int dev)
1718 {
1719 struct pfctl_status *status;
1720 int running;
1721
1722 if ((status = pfctl_get_status_h(pfh)) == NULL) {
1723 warn("DIOCGETSTATUS");
1724 return (-1);
1725 }
1726
1727 running = status->running;
1728
1729 print_running(status);
1730 pfctl_free_status(status);
1731 return (!running);
1732 }
1733
1734 int
pfctl_show_timeouts(int dev,int opts)1735 pfctl_show_timeouts(int dev, int opts)
1736 {
1737 uint32_t seconds;
1738 int i;
1739 int ret;
1740
1741 if (opts & PF_OPT_SHOWALL)
1742 pfctl_print_title("TIMEOUTS:");
1743 for (i = 0; pf_timeouts[i].name; i++) {
1744 if ((ret = pfctl_get_timeout(pfh, pf_timeouts[i].timeout, &seconds)) != 0)
1745 errc(1, ret, "DIOCGETTIMEOUT");
1746 printf("%-20s %10d", pf_timeouts[i].name, seconds);
1747 if (pf_timeouts[i].timeout >= PFTM_ADAPTIVE_START &&
1748 pf_timeouts[i].timeout <= PFTM_ADAPTIVE_END)
1749 printf(" states");
1750 else
1751 printf("s");
1752 printf("\n");
1753 }
1754 return (0);
1755
1756 }
1757
1758 int
pfctl_show_limits(int dev,int opts)1759 pfctl_show_limits(int dev, int opts)
1760 {
1761 unsigned int limit;
1762 int i;
1763 int ret;
1764
1765 if (opts & PF_OPT_SHOWALL)
1766 pfctl_print_title("LIMITS:");
1767 for (i = 0; pf_limits[i].name; i++) {
1768 if ((ret = pfctl_get_limit(pfh, pf_limits[i].index, &limit)) != 0)
1769 errc(1, ret, "DIOCGETLIMIT");
1770 printf("%-13s ", pf_limits[i].name);
1771 if (limit == UINT_MAX)
1772 printf("unlimited\n");
1773 else
1774 printf("hard limit %8u\n", limit);
1775 }
1776 return (0);
1777 }
1778
1779 void
pfctl_show_creators(int opts)1780 pfctl_show_creators(int opts)
1781 {
1782 int ret;
1783 uint32_t creators[16];
1784 size_t count = nitems(creators);
1785
1786 ret = pfctl_get_creatorids(pfh, creators, &count);
1787 if (ret != 0)
1788 errx(ret, "Failed to retrieve creators");
1789
1790 printf("Creator IDs:\n");
1791 for (size_t i = 0; i < count; i++)
1792 printf("%08x\n", creators[i]);
1793 }
1794
1795 /* callbacks for rule/nat/rdr/addr */
1796 int
pfctl_add_pool(struct pfctl * pf,struct pfctl_pool * p,sa_family_t af,int which)1797 pfctl_add_pool(struct pfctl *pf, struct pfctl_pool *p, sa_family_t af, int which)
1798 {
1799 struct pf_pooladdr *pa;
1800 int ret;
1801
1802 pf->paddr.af = af;
1803 TAILQ_FOREACH(pa, &p->list, entries) {
1804 memcpy(&pf->paddr.addr, pa, sizeof(struct pf_pooladdr));
1805 if ((pf->opts & PF_OPT_NOACTION) == 0) {
1806 if ((ret = pfctl_add_addr(pf->h, &pf->paddr, which)) != 0)
1807 errc(1, ret, "DIOCADDADDR");
1808 }
1809 }
1810 return (0);
1811 }
1812
1813 void
pfctl_init_rule(struct pfctl_rule * r)1814 pfctl_init_rule(struct pfctl_rule *r)
1815 {
1816 memset(r, 0, sizeof(struct pfctl_rule));
1817 TAILQ_INIT(&(r->rdr.list));
1818 TAILQ_INIT(&(r->nat.list));
1819 TAILQ_INIT(&(r->route.list));
1820 }
1821
1822 int
pfctl_append_rule(struct pfctl * pf,struct pfctl_rule * r,const char * anchor_call)1823 pfctl_append_rule(struct pfctl *pf, struct pfctl_rule *r,
1824 const char *anchor_call)
1825 {
1826 u_int8_t rs_num;
1827 struct pfctl_rule *rule;
1828 struct pfctl_ruleset *rs;
1829 char *p;
1830
1831 rs_num = pf_get_ruleset_number(r->action);
1832 if (rs_num == PF_RULESET_MAX)
1833 errx(1, "Invalid rule type %d", r->action);
1834
1835 rs = &pf->anchor->ruleset;
1836
1837 if (anchor_call[0] && r->anchor == NULL) {
1838 /*
1839 * Don't make non-brace anchors part of the main anchor pool.
1840 */
1841 if ((r->anchor = calloc(1, sizeof(*r->anchor))) == NULL)
1842 err(1, "pfctl_append_rule: calloc");
1843
1844 pf_init_ruleset(&r->anchor->ruleset);
1845 r->anchor->ruleset.anchor = r->anchor;
1846 if (strlcpy(r->anchor->path, anchor_call,
1847 sizeof(rule->anchor->path)) >= sizeof(rule->anchor->path))
1848 errx(1, "pfctl_append_rule: strlcpy");
1849 if ((p = strrchr(anchor_call, '/')) != NULL) {
1850 if (!strlen(p))
1851 err(1, "pfctl_append_rule: bad anchor name %s",
1852 anchor_call);
1853 } else
1854 p = (char *)anchor_call;
1855 if (strlcpy(r->anchor->name, p,
1856 sizeof(rule->anchor->name)) >= sizeof(rule->anchor->name))
1857 errx(1, "pfctl_append_rule: strlcpy");
1858 }
1859
1860 if ((rule = calloc(1, sizeof(*rule))) == NULL)
1861 err(1, "calloc");
1862 bcopy(r, rule, sizeof(*rule));
1863 TAILQ_INIT(&rule->rdr.list);
1864 pfctl_move_pool(&r->rdr, &rule->rdr);
1865 TAILQ_INIT(&rule->nat.list);
1866 pfctl_move_pool(&r->nat, &rule->nat);
1867 TAILQ_INIT(&rule->route.list);
1868 pfctl_move_pool(&r->route, &rule->route);
1869
1870 TAILQ_INSERT_TAIL(rs->rules[rs_num].active.ptr, rule, entries);
1871 return (0);
1872 }
1873
1874 int
pfctl_append_eth_rule(struct pfctl * pf,struct pfctl_eth_rule * r,const char * anchor_call)1875 pfctl_append_eth_rule(struct pfctl *pf, struct pfctl_eth_rule *r,
1876 const char *anchor_call)
1877 {
1878 struct pfctl_eth_rule *rule;
1879 struct pfctl_eth_ruleset *rs;
1880 char *p;
1881
1882 rs = &pf->eanchor->ruleset;
1883
1884 if (anchor_call[0] && r->anchor == NULL) {
1885 /*
1886 * Don't make non-brace anchors part of the main anchor pool.
1887 */
1888 if ((r->anchor = calloc(1, sizeof(*r->anchor))) == NULL)
1889 err(1, "pfctl_append_rule: calloc");
1890
1891 pf_init_eth_ruleset(&r->anchor->ruleset);
1892 r->anchor->ruleset.anchor = r->anchor;
1893 if (strlcpy(r->anchor->path, anchor_call,
1894 sizeof(rule->anchor->path)) >= sizeof(rule->anchor->path))
1895 errx(1, "pfctl_append_rule: strlcpy");
1896 if ((p = strrchr(anchor_call, '/')) != NULL) {
1897 if (!strlen(p))
1898 err(1, "pfctl_append_eth_rule: bad anchor name %s",
1899 anchor_call);
1900 } else
1901 p = (char *)anchor_call;
1902 if (strlcpy(r->anchor->name, p,
1903 sizeof(rule->anchor->name)) >= sizeof(rule->anchor->name))
1904 errx(1, "pfctl_append_eth_rule: strlcpy");
1905 }
1906
1907 if ((rule = calloc(1, sizeof(*rule))) == NULL)
1908 err(1, "calloc");
1909 bcopy(r, rule, sizeof(*rule));
1910
1911 TAILQ_INSERT_TAIL(&rs->rules, rule, entries);
1912 return (0);
1913 }
1914
1915 int
pfctl_eth_ruleset_trans(struct pfctl * pf,char * path,struct pfctl_eth_anchor * a)1916 pfctl_eth_ruleset_trans(struct pfctl *pf, char *path,
1917 struct pfctl_eth_anchor *a)
1918 {
1919 int osize = pf->trans->pfrb_size;
1920
1921 if ((pf->loadopt & PFCTL_FLAG_ETH) != 0) {
1922 if (pfctl_add_trans(pf->trans, PF_RULESET_ETH, path))
1923 return (1);
1924 }
1925 if (pfctl_trans(pf->dev, pf->trans, DIOCXBEGIN, osize))
1926 return (5);
1927
1928 return (0);
1929 }
1930
1931 int
pfctl_ruleset_trans(struct pfctl * pf,char * path,struct pfctl_anchor * a,bool do_eth)1932 pfctl_ruleset_trans(struct pfctl *pf, char *path, struct pfctl_anchor *a, bool do_eth)
1933 {
1934 int osize = pf->trans->pfrb_size;
1935
1936 if ((pf->loadopt & PFCTL_FLAG_ETH) != 0 && do_eth) {
1937 if (pfctl_add_trans(pf->trans, PF_RULESET_ETH, path))
1938 return (1);
1939 }
1940 if ((pf->loadopt & PFCTL_FLAG_NAT) != 0) {
1941 if (pfctl_add_trans(pf->trans, PF_RULESET_NAT, path) ||
1942 pfctl_add_trans(pf->trans, PF_RULESET_BINAT, path) ||
1943 pfctl_add_trans(pf->trans, PF_RULESET_RDR, path))
1944 return (1);
1945 }
1946 if (a == pf->astack[0] && ((altqsupport &&
1947 (pf->loadopt & PFCTL_FLAG_ALTQ) != 0))) {
1948 if (pfctl_add_trans(pf->trans, PF_RULESET_ALTQ, path))
1949 return (2);
1950 }
1951 if ((pf->loadopt & PFCTL_FLAG_FILTER) != 0) {
1952 if (pfctl_add_trans(pf->trans, PF_RULESET_SCRUB, path) ||
1953 pfctl_add_trans(pf->trans, PF_RULESET_FILTER, path))
1954 return (3);
1955 }
1956 if (pf->loadopt & PFCTL_FLAG_TABLE)
1957 if (pfctl_add_trans(pf->trans, PF_RULESET_TABLE, path))
1958 return (4);
1959 if (pfctl_trans(pf->dev, pf->trans, DIOCXBEGIN, osize))
1960 return (5);
1961
1962 return (0);
1963 }
1964
1965 int
pfctl_load_eth_ruleset(struct pfctl * pf,char * path,struct pfctl_eth_ruleset * rs,int depth)1966 pfctl_load_eth_ruleset(struct pfctl *pf, char *path,
1967 struct pfctl_eth_ruleset *rs, int depth)
1968 {
1969 struct pfctl_eth_rule *r;
1970 int error, len = strlen(path);
1971 int brace = 0;
1972
1973 pf->eanchor = rs->anchor;
1974 if (path[0])
1975 snprintf(&path[len], MAXPATHLEN - len, "/%s", pf->eanchor->name);
1976 else
1977 snprintf(&path[len], MAXPATHLEN - len, "%s", pf->eanchor->name);
1978
1979 if (depth) {
1980 if (TAILQ_FIRST(&rs->rules) != NULL) {
1981 brace++;
1982 if (pf->opts & PF_OPT_VERBOSE)
1983 printf(" {\n");
1984 if ((pf->opts & PF_OPT_NOACTION) == 0 &&
1985 (error = pfctl_eth_ruleset_trans(pf,
1986 path, rs->anchor))) {
1987 printf("pfctl_load_eth_rulesets: "
1988 "pfctl_eth_ruleset_trans %d\n", error);
1989 goto error;
1990 }
1991 } else if (pf->opts & PF_OPT_VERBOSE)
1992 printf("\n");
1993 }
1994
1995 while ((r = TAILQ_FIRST(&rs->rules)) != NULL) {
1996 TAILQ_REMOVE(&rs->rules, r, entries);
1997
1998 error = pfctl_load_eth_rule(pf, path, r, depth);
1999 if (error)
2000 return (error);
2001
2002 if (r->anchor) {
2003 if ((error = pfctl_load_eth_ruleset(pf, path,
2004 &r->anchor->ruleset, depth + 1)))
2005 return (error);
2006 } else if (pf->opts & PF_OPT_VERBOSE)
2007 printf("\n");
2008 free(r);
2009 }
2010 if (brace && pf->opts & PF_OPT_VERBOSE) {
2011 INDENT(depth - 1, (pf->opts & PF_OPT_VERBOSE));
2012 printf("}\n");
2013 }
2014 path[len] = '\0';
2015
2016 return (0);
2017 error:
2018 path[len] = '\0';
2019 return (error);
2020 }
2021
2022 int
pfctl_load_eth_rule(struct pfctl * pf,char * path,struct pfctl_eth_rule * r,int depth)2023 pfctl_load_eth_rule(struct pfctl *pf, char *path, struct pfctl_eth_rule *r,
2024 int depth)
2025 {
2026 char *name;
2027 char anchor[PF_ANCHOR_NAME_SIZE];
2028 int len = strlen(path);
2029 int ret;
2030
2031 if (strlcpy(anchor, path, sizeof(anchor)) >= sizeof(anchor))
2032 errx(1, "pfctl_load_eth_rule: strlcpy");
2033
2034 if (r->anchor) {
2035 if (r->anchor->match) {
2036 if (path[0])
2037 snprintf(&path[len], MAXPATHLEN - len,
2038 "/%s", r->anchor->name);
2039 else
2040 snprintf(&path[len], MAXPATHLEN - len,
2041 "%s", r->anchor->name);
2042 name = r->anchor->name;
2043 } else
2044 name = r->anchor->path;
2045 } else
2046 name = "";
2047
2048 if ((pf->opts & PF_OPT_NOACTION) == 0)
2049 if ((ret = pfctl_add_eth_rule(pf->dev, r, anchor, name,
2050 pf->eth_ticket)) != 0)
2051 errc(1, ret, "DIOCADDETHRULENV");
2052
2053 if (pf->opts & PF_OPT_VERBOSE) {
2054 INDENT(depth, !(pf->opts & PF_OPT_VERBOSE2));
2055 print_eth_rule(r, r->anchor ? r->anchor->name : "",
2056 pf->opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG));
2057 }
2058
2059 path[len] = '\0';
2060
2061 return (0);
2062 }
2063
2064 int
pfctl_load_ruleset(struct pfctl * pf,char * path,struct pfctl_ruleset * rs,int rs_num,int depth)2065 pfctl_load_ruleset(struct pfctl *pf, char *path, struct pfctl_ruleset *rs,
2066 int rs_num, int depth)
2067 {
2068 struct pfctl_rule *r;
2069 int error, len = strlen(path);
2070 int brace = 0;
2071
2072 pf->anchor = rs->anchor;
2073
2074 if (path[0])
2075 snprintf(&path[len], MAXPATHLEN - len, "/%s", pf->anchor->name);
2076 else
2077 snprintf(&path[len], MAXPATHLEN - len, "%s", pf->anchor->name);
2078
2079 if (depth) {
2080 if (TAILQ_FIRST(rs->rules[rs_num].active.ptr) != NULL) {
2081 brace++;
2082 if (pf->opts & PF_OPT_VERBOSE)
2083 printf(" {\n");
2084 if ((pf->opts & PF_OPT_NOACTION) == 0 &&
2085 (error = pfctl_ruleset_trans(pf,
2086 path, rs->anchor, false))) {
2087 printf("%s: "
2088 "pfctl_ruleset_trans %d\n", __func__, error);
2089 goto error;
2090 }
2091 } else if (pf->opts & PF_OPT_VERBOSE)
2092 printf("\n");
2093 }
2094
2095 if (pf->optimize && rs_num == PF_RULESET_FILTER)
2096 pfctl_optimize_ruleset(pf, rs);
2097
2098 while ((r = TAILQ_FIRST(rs->rules[rs_num].active.ptr)) != NULL) {
2099 TAILQ_REMOVE(rs->rules[rs_num].active.ptr, r, entries);
2100
2101 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++)
2102 expand_label(r->label[i], PF_RULE_LABEL_SIZE, r);
2103 expand_label(r->tagname, PF_TAG_NAME_SIZE, r);
2104 expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r);
2105
2106 if ((error = pfctl_load_rule(pf, path, r, depth)))
2107 goto error;
2108 if (r->anchor) {
2109 if ((error = pfctl_load_ruleset(pf, path,
2110 &r->anchor->ruleset, rs_num, depth + 1)))
2111 goto error;
2112 } else if (pf->opts & PF_OPT_VERBOSE)
2113 printf("\n");
2114 free(r);
2115 }
2116 if (brace && pf->opts & PF_OPT_VERBOSE) {
2117 INDENT(depth - 1, (pf->opts & PF_OPT_VERBOSE));
2118 printf("}\n");
2119 }
2120 path[len] = '\0';
2121 return (0);
2122
2123 error:
2124 path[len] = '\0';
2125 return (error);
2126
2127 }
2128
2129 int
pfctl_load_rule(struct pfctl * pf,char * path,struct pfctl_rule * r,int depth)2130 pfctl_load_rule(struct pfctl *pf, char *path, struct pfctl_rule *r, int depth)
2131 {
2132 u_int8_t rs_num = pf_get_ruleset_number(r->action);
2133 char *name;
2134 u_int32_t ticket;
2135 char anchor[PF_ANCHOR_NAME_SIZE];
2136 int len = strlen(path);
2137 int error;
2138 bool was_present;
2139
2140 /* set up anchor before adding to path for anchor_call */
2141 if ((pf->opts & PF_OPT_NOACTION) == 0)
2142 ticket = pfctl_get_ticket(pf->trans, rs_num, path);
2143 if (strlcpy(anchor, path, sizeof(anchor)) >= sizeof(anchor))
2144 errx(1, "pfctl_load_rule: strlcpy");
2145
2146 if (r->anchor) {
2147 if (r->anchor->match) {
2148 if (path[0])
2149 snprintf(&path[len], MAXPATHLEN - len,
2150 "/%s", r->anchor->name);
2151 else
2152 snprintf(&path[len], MAXPATHLEN - len,
2153 "%s", r->anchor->name);
2154 name = r->anchor->name;
2155 } else
2156 name = r->anchor->path;
2157 } else
2158 name = "";
2159
2160 was_present = false;
2161 if ((pf->opts & PF_OPT_NOACTION) == 0) {
2162 if ((pf->opts & PF_OPT_NOACTION) == 0) {
2163 if ((error = pfctl_begin_addrs(pf->h,
2164 &pf->paddr.ticket)) != 0)
2165 errc(1, error, "DIOCBEGINADDRS");
2166 }
2167
2168 if (pfctl_add_pool(pf, &r->rdr, r->af, PF_RDR))
2169 return (1);
2170 if (pfctl_add_pool(pf, &r->nat, r->naf ? r->naf : r->af, PF_NAT))
2171 return (1);
2172 if (pfctl_add_pool(pf, &r->route, r->af, PF_RT))
2173 return (1);
2174 error = pfctl_add_rule_h(pf->h, r, anchor, name, ticket,
2175 pf->paddr.ticket);
2176 switch (error) {
2177 case 0:
2178 /* things worked, do nothing */
2179 break;
2180 case EEXIST:
2181 /* an identical rule is already present */
2182 was_present = true;
2183 break;
2184 default:
2185 errc(1, error, "DIOCADDRULE");
2186 }
2187 }
2188
2189 if (pf->opts & PF_OPT_VERBOSE) {
2190 INDENT(depth, !(pf->opts & PF_OPT_VERBOSE2));
2191 print_rule(r, name,
2192 pf->opts & PF_OPT_VERBOSE2,
2193 pf->opts & PF_OPT_NUMERIC);
2194 if (was_present)
2195 printf(" -- rule was already present");
2196 }
2197 path[len] = '\0';
2198 pfctl_clear_pool(&r->rdr);
2199 pfctl_clear_pool(&r->nat);
2200 return (0);
2201 }
2202
2203 int
pfctl_add_altq(struct pfctl * pf,struct pf_altq * a)2204 pfctl_add_altq(struct pfctl *pf, struct pf_altq *a)
2205 {
2206 if (altqsupport &&
2207 (loadopt & PFCTL_FLAG_ALTQ) != 0) {
2208 memcpy(&pf->paltq->altq, a, sizeof(struct pf_altq));
2209 if ((pf->opts & PF_OPT_NOACTION) == 0) {
2210 if (ioctl(pf->dev, DIOCADDALTQ, pf->paltq)) {
2211 if (errno == ENXIO)
2212 errx(1, "qtype not configured");
2213 else if (errno == ENODEV)
2214 errx(1, "%s: driver does not support "
2215 "altq", a->ifname);
2216 else
2217 err(1, "DIOCADDALTQ");
2218 }
2219 }
2220 pfaltq_store(&pf->paltq->altq);
2221 }
2222 return (0);
2223 }
2224
2225 int
pfctl_rules(int dev,char * filename,int opts,int optimize,char * anchorname,struct pfr_buffer * trans)2226 pfctl_rules(int dev, char *filename, int opts, int optimize,
2227 char *anchorname, struct pfr_buffer *trans)
2228 {
2229 #define ERR(...) do { warn(__VA_ARGS__); goto _error; } while(0)
2230 #define ERRX(...) do { warnx(__VA_ARGS__); goto _error; } while(0)
2231
2232 struct pfr_buffer *t, buf;
2233 struct pfioc_altq pa;
2234 struct pfctl pf;
2235 struct pfctl_ruleset *rs;
2236 struct pfctl_eth_ruleset *ethrs;
2237 struct pfr_table trs;
2238 char *path = NULL;
2239 int osize;
2240
2241 RB_INIT(&pf_anchors);
2242 memset(&pf_main_anchor, 0, sizeof(pf_main_anchor));
2243 pf_init_ruleset(&pf_main_anchor.ruleset);
2244 pf_main_anchor.ruleset.anchor = &pf_main_anchor;
2245
2246 memset(&pf_eth_main_anchor, 0, sizeof(pf_eth_main_anchor));
2247 pf_init_eth_ruleset(&pf_eth_main_anchor.ruleset);
2248 pf_eth_main_anchor.ruleset.anchor = &pf_eth_main_anchor;
2249
2250 if (trans == NULL) {
2251 bzero(&buf, sizeof(buf));
2252 buf.pfrb_type = PFRB_TRANS;
2253 t = &buf;
2254 osize = 0;
2255 } else {
2256 t = trans;
2257 osize = t->pfrb_size;
2258 }
2259
2260 memset(&pa, 0, sizeof(pa));
2261 pa.version = PFIOC_ALTQ_VERSION;
2262 memset(&pf, 0, sizeof(pf));
2263 memset(&trs, 0, sizeof(trs));
2264 if ((path = calloc(1, MAXPATHLEN)) == NULL)
2265 ERRX("%s: calloc", __func__);
2266 if (strlcpy(trs.pfrt_anchor, anchorname,
2267 sizeof(trs.pfrt_anchor)) >= sizeof(trs.pfrt_anchor))
2268 ERRX("%s: strlcpy", __func__);
2269 pf.dev = dev;
2270 pf.h = pfh;
2271 pf.opts = opts;
2272 pf.optimize = optimize;
2273 pf.loadopt = loadopt;
2274
2275 /* non-brace anchor, create without resolving the path */
2276 if ((pf.anchor = calloc(1, sizeof(*pf.anchor))) == NULL)
2277 ERRX("%s: calloc", __func__);
2278 rs = &pf.anchor->ruleset;
2279 pf_init_ruleset(rs);
2280 rs->anchor = pf.anchor;
2281 if (strlcpy(pf.anchor->path, anchorname,
2282 sizeof(pf.anchor->path)) >= sizeof(pf.anchor->path))
2283 errx(1, "%s: strlcpy", __func__);
2284 if (strlcpy(pf.anchor->name, anchorname,
2285 sizeof(pf.anchor->name)) >= sizeof(pf.anchor->name))
2286 errx(1, "%s: strlcpy", __func__);
2287
2288
2289 pf.astack[0] = pf.anchor;
2290 pf.asd = 0;
2291 if (anchorname[0])
2292 pf.loadopt &= ~PFCTL_FLAG_ALTQ;
2293 pf.paltq = &pa;
2294 pf.trans = t;
2295 pfctl_init_options(&pf);
2296
2297 /* Set up ethernet anchor */
2298 if ((pf.eanchor = calloc(1, sizeof(*pf.eanchor))) == NULL)
2299 ERRX("%s: calloc", __func__);
2300
2301 if (strlcpy(pf.eanchor->path, anchorname,
2302 sizeof(pf.eanchor->path)) >= sizeof(pf.eanchor->path))
2303 errx(1, "%s: strlcpy", __func__);
2304 if (strlcpy(pf.eanchor->name, anchorname,
2305 sizeof(pf.eanchor->name)) >= sizeof(pf.eanchor->name))
2306 errx(1, "%s: strlcpy", __func__);
2307
2308 ethrs = &pf.eanchor->ruleset;
2309 pf_init_eth_ruleset(ethrs);
2310 ethrs->anchor = pf.eanchor;
2311 pf.eastack[0] = pf.eanchor;
2312
2313 if ((opts & PF_OPT_NOACTION) == 0) {
2314 /*
2315 * XXX For the time being we need to open transactions for
2316 * the main ruleset before parsing, because tables are still
2317 * loaded at parse time.
2318 */
2319 if (pfctl_ruleset_trans(&pf, anchorname, pf.anchor, true))
2320 ERRX("%s", __func__);
2321 if (pf.loadopt & PFCTL_FLAG_ETH)
2322 pf.eth_ticket = pfctl_get_ticket(t, PF_RULESET_ETH, anchorname);
2323 if (altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ))
2324 pa.ticket =
2325 pfctl_get_ticket(t, PF_RULESET_ALTQ, anchorname);
2326 if (pf.loadopt & PFCTL_FLAG_TABLE)
2327 pf.astack[0]->ruleset.tticket =
2328 pfctl_get_ticket(t, PF_RULESET_TABLE, anchorname);
2329 }
2330
2331 if (parse_config(filename, &pf) < 0) {
2332 if ((opts & PF_OPT_NOACTION) == 0)
2333 ERRX("Syntax error in config file: "
2334 "pf rules not loaded");
2335 else
2336 goto _error;
2337 }
2338 if (loadopt & PFCTL_FLAG_OPTION)
2339 pfctl_adjust_skip_ifaces(&pf);
2340
2341 if ((pf.loadopt & PFCTL_FLAG_FILTER &&
2342 (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_SCRUB, 0))) ||
2343 (pf.loadopt & PFCTL_FLAG_ETH &&
2344 (pfctl_load_eth_ruleset(&pf, path, ethrs, 0))) ||
2345 (pf.loadopt & PFCTL_FLAG_NAT &&
2346 (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_NAT, 0) ||
2347 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_RDR, 0) ||
2348 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_BINAT, 0))) ||
2349 (pf.loadopt & PFCTL_FLAG_FILTER &&
2350 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_FILTER, 0))) {
2351 if ((opts & PF_OPT_NOACTION) == 0)
2352 ERRX("Unable to load rules into kernel");
2353 else
2354 goto _error;
2355 }
2356
2357 if ((altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ) != 0))
2358 if (check_commit_altq(dev, opts) != 0)
2359 ERRX("errors in altq config");
2360
2361 if (trans == NULL) {
2362 /* process "load anchor" directives */
2363 if (pfctl_load_anchors(dev, &pf, t) == -1)
2364 ERRX("load anchors");
2365
2366 if ((opts & PF_OPT_NOACTION) == 0) {
2367 if (!anchorname[0] && pfctl_load_options(&pf))
2368 goto _error;
2369 if (pfctl_trans(dev, t, DIOCXCOMMIT, osize))
2370 ERR("DIOCXCOMMIT");
2371 }
2372 }
2373 free(path);
2374 return (0);
2375
2376 _error:
2377 if (trans == NULL) { /* main ruleset */
2378 if ((opts & PF_OPT_NOACTION) == 0)
2379 if (pfctl_trans(dev, t, DIOCXROLLBACK, osize))
2380 err(1, "DIOCXROLLBACK");
2381 exit(1);
2382 } else { /* sub ruleset */
2383 free(path);
2384 return (-1);
2385 }
2386
2387 #undef ERR
2388 #undef ERRX
2389 }
2390
2391 FILE *
pfctl_fopen(const char * name,const char * mode)2392 pfctl_fopen(const char *name, const char *mode)
2393 {
2394 struct stat st;
2395 FILE *fp;
2396
2397 fp = fopen(name, mode);
2398 if (fp == NULL)
2399 return (NULL);
2400 if (fstat(fileno(fp), &st)) {
2401 fclose(fp);
2402 return (NULL);
2403 }
2404 if (S_ISDIR(st.st_mode)) {
2405 fclose(fp);
2406 errno = EISDIR;
2407 return (NULL);
2408 }
2409 return (fp);
2410 }
2411
2412 void
pfctl_init_options(struct pfctl * pf)2413 pfctl_init_options(struct pfctl *pf)
2414 {
2415
2416 pf->timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL;
2417 pf->timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL;
2418 pf->timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL;
2419 pf->timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL;
2420 pf->timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL;
2421 pf->timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL;
2422 pf->timeout[PFTM_SCTP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL;
2423 pf->timeout[PFTM_SCTP_OPENING] = PFTM_TCP_OPENING_VAL;
2424 pf->timeout[PFTM_SCTP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL;
2425 pf->timeout[PFTM_SCTP_CLOSING] = PFTM_TCP_CLOSING_VAL;
2426 pf->timeout[PFTM_SCTP_CLOSED] = PFTM_TCP_CLOSED_VAL;
2427 pf->timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL;
2428 pf->timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL;
2429 pf->timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL;
2430 pf->timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL;
2431 pf->timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL;
2432 pf->timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL;
2433 pf->timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL;
2434 pf->timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL;
2435 pf->timeout[PFTM_FRAG] = PFTM_FRAG_VAL;
2436 pf->timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL;
2437 pf->timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL;
2438 pf->timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL;
2439 pf->timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START;
2440 pf->timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END;
2441
2442 pf->limit[PF_LIMIT_STATES] = PFSTATE_HIWAT;
2443 pf->limit[PF_LIMIT_FRAGS] = PFFRAG_FRENT_HIWAT;
2444 pf->limit[PF_LIMIT_SRC_NODES] = PFSNODE_HIWAT;
2445 pf->limit[PF_LIMIT_TABLE_ENTRIES] = PFR_KENTRY_HIWAT;
2446
2447 pf->debug = PF_DEBUG_URGENT;
2448 pf->reassemble = 0;
2449
2450 pf->syncookies = false;
2451 pf->syncookieswat[0] = PF_SYNCOOKIES_LOWATPCT;
2452 pf->syncookieswat[1] = PF_SYNCOOKIES_HIWATPCT;
2453 }
2454
2455 int
pfctl_load_options(struct pfctl * pf)2456 pfctl_load_options(struct pfctl *pf)
2457 {
2458 int i, error = 0;
2459
2460 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2461 return (0);
2462
2463 /* load limits */
2464 for (i = 0; i < PF_LIMIT_MAX; i++) {
2465 if ((pf->opts & PF_OPT_MERGE) && !pf->limit_set[i])
2466 continue;
2467 if (pfctl_load_limit(pf, i, pf->limit[i]))
2468 error = 1;
2469 }
2470
2471 /*
2472 * If we've set the states limit, but haven't explicitly set adaptive
2473 * timeouts, do it now with a start of 60% and end of 120%.
2474 */
2475 if (pf->limit_set[PF_LIMIT_STATES] &&
2476 !pf->timeout_set[PFTM_ADAPTIVE_START] &&
2477 !pf->timeout_set[PFTM_ADAPTIVE_END]) {
2478 pf->timeout[PFTM_ADAPTIVE_START] =
2479 (pf->limit[PF_LIMIT_STATES] / 10) * 6;
2480 pf->timeout_set[PFTM_ADAPTIVE_START] = 1;
2481 pf->timeout[PFTM_ADAPTIVE_END] =
2482 (pf->limit[PF_LIMIT_STATES] / 10) * 12;
2483 pf->timeout_set[PFTM_ADAPTIVE_END] = 1;
2484 }
2485
2486 /* load timeouts */
2487 for (i = 0; i < PFTM_MAX; i++) {
2488 if ((pf->opts & PF_OPT_MERGE) && !pf->timeout_set[i])
2489 continue;
2490 if (pfctl_load_timeout(pf, i, pf->timeout[i]))
2491 error = 1;
2492 }
2493
2494 /* load debug */
2495 if (!(pf->opts & PF_OPT_MERGE) || pf->debug_set)
2496 if (pfctl_load_debug(pf, pf->debug))
2497 error = 1;
2498
2499 /* load logif */
2500 if (!(pf->opts & PF_OPT_MERGE) || pf->ifname_set)
2501 if (pfctl_load_logif(pf, pf->ifname))
2502 error = 1;
2503
2504 /* load hostid */
2505 if (!(pf->opts & PF_OPT_MERGE) || pf->hostid_set)
2506 if (pfctl_load_hostid(pf, pf->hostid))
2507 error = 1;
2508
2509 /* load reassembly settings */
2510 if (!(pf->opts & PF_OPT_MERGE) || pf->reass_set)
2511 if (pfctl_load_reassembly(pf, pf->reassemble))
2512 error = 1;
2513
2514 /* load keepcounters */
2515 if (pfctl_set_keepcounters(pf->dev, pf->keep_counters))
2516 error = 1;
2517
2518 /* load syncookies settings */
2519 if (pfctl_load_syncookies(pf, pf->syncookies))
2520 error = 1;
2521
2522 return (error);
2523 }
2524
2525 int
pfctl_apply_limit(struct pfctl * pf,const char * opt,unsigned int limit)2526 pfctl_apply_limit(struct pfctl *pf, const char *opt, unsigned int limit)
2527 {
2528 int i;
2529
2530
2531 for (i = 0; pf_limits[i].name; i++) {
2532 if (strcasecmp(opt, pf_limits[i].name) == 0) {
2533 pf->limit[pf_limits[i].index] = limit;
2534 pf->limit_set[pf_limits[i].index] = 1;
2535 break;
2536 }
2537 }
2538 if (pf_limits[i].name == NULL) {
2539 warnx("Bad pool name.");
2540 return (1);
2541 }
2542
2543 if (pf->opts & PF_OPT_VERBOSE)
2544 printf("set limit %s %d\n", opt, limit);
2545
2546 return (0);
2547 }
2548
2549 int
pfctl_load_limit(struct pfctl * pf,unsigned int index,unsigned int limit)2550 pfctl_load_limit(struct pfctl *pf, unsigned int index, unsigned int limit)
2551 {
2552 if (pfctl_set_limit(pf->h, index, limit)) {
2553 if (errno == EBUSY)
2554 warnx("Current pool size exceeds requested %s limit %u",
2555 pf_limits[index].name, limit);
2556 else
2557 warnx("Cannot set %s limit to %u",
2558 pf_limits[index].name, limit);
2559 return (1);
2560 }
2561 return (0);
2562 }
2563
2564 int
pfctl_apply_timeout(struct pfctl * pf,const char * opt,int seconds,int quiet)2565 pfctl_apply_timeout(struct pfctl *pf, const char *opt, int seconds, int quiet)
2566 {
2567 int i;
2568
2569 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2570 return (0);
2571
2572 for (i = 0; pf_timeouts[i].name; i++) {
2573 if (strcasecmp(opt, pf_timeouts[i].name) == 0) {
2574 pf->timeout[pf_timeouts[i].timeout] = seconds;
2575 pf->timeout_set[pf_timeouts[i].timeout] = 1;
2576 break;
2577 }
2578 }
2579
2580 if (pf_timeouts[i].name == NULL) {
2581 warnx("Bad timeout name.");
2582 return (1);
2583 }
2584
2585
2586 if (pf->opts & PF_OPT_VERBOSE && ! quiet)
2587 printf("set timeout %s %d\n", opt, seconds);
2588
2589 return (0);
2590 }
2591
2592 int
pfctl_load_timeout(struct pfctl * pf,unsigned int timeout,unsigned int seconds)2593 pfctl_load_timeout(struct pfctl *pf, unsigned int timeout, unsigned int seconds)
2594 {
2595 if (pfctl_set_timeout(pf->h, timeout, seconds)) {
2596 warnx("DIOCSETTIMEOUT");
2597 return (1);
2598 }
2599 return (0);
2600 }
2601
2602 int
pfctl_set_reassembly(struct pfctl * pf,int on,int nodf)2603 pfctl_set_reassembly(struct pfctl *pf, int on, int nodf)
2604 {
2605 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2606 return (0);
2607
2608 pf->reass_set = 1;
2609 if (on) {
2610 pf->reassemble = PF_REASS_ENABLED;
2611 if (nodf)
2612 pf->reassemble |= PF_REASS_NODF;
2613 } else {
2614 pf->reassemble = 0;
2615 }
2616
2617 if (pf->opts & PF_OPT_VERBOSE)
2618 printf("set reassemble %s %s\n", on ? "yes" : "no",
2619 nodf ? "no-df" : "");
2620
2621 return (0);
2622 }
2623
2624 int
pfctl_set_optimization(struct pfctl * pf,const char * opt)2625 pfctl_set_optimization(struct pfctl *pf, const char *opt)
2626 {
2627 const struct pf_hint *hint;
2628 int i, r;
2629
2630 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2631 return (0);
2632
2633 for (i = 0; pf_hints[i].name; i++)
2634 if (strcasecmp(opt, pf_hints[i].name) == 0)
2635 break;
2636
2637 hint = pf_hints[i].hint;
2638 if (hint == NULL) {
2639 warnx("invalid state timeouts optimization");
2640 return (1);
2641 }
2642
2643 for (i = 0; hint[i].name; i++)
2644 if ((r = pfctl_apply_timeout(pf, hint[i].name,
2645 hint[i].timeout, 1)))
2646 return (r);
2647
2648 if (pf->opts & PF_OPT_VERBOSE)
2649 printf("set optimization %s\n", opt);
2650
2651 return (0);
2652 }
2653
2654 int
pfctl_set_logif(struct pfctl * pf,char * ifname)2655 pfctl_set_logif(struct pfctl *pf, char *ifname)
2656 {
2657
2658 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2659 return (0);
2660
2661 if (!strcmp(ifname, "none")) {
2662 free(pf->ifname);
2663 pf->ifname = NULL;
2664 } else {
2665 pf->ifname = strdup(ifname);
2666 if (!pf->ifname)
2667 errx(1, "pfctl_set_logif: strdup");
2668 }
2669 pf->ifname_set = 1;
2670
2671 if (pf->opts & PF_OPT_VERBOSE)
2672 printf("set loginterface %s\n", ifname);
2673
2674 return (0);
2675 }
2676
2677 int
pfctl_load_logif(struct pfctl * pf,char * ifname)2678 pfctl_load_logif(struct pfctl *pf, char *ifname)
2679 {
2680 if (ifname != NULL && strlen(ifname) >= IFNAMSIZ) {
2681 warnx("pfctl_load_logif: strlcpy");
2682 return (1);
2683 }
2684 return (pfctl_set_statusif(pfh, ifname ? ifname : ""));
2685 }
2686
2687 void
pfctl_set_hostid(struct pfctl * pf,u_int32_t hostid)2688 pfctl_set_hostid(struct pfctl *pf, u_int32_t hostid)
2689 {
2690 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2691 return;
2692
2693 HTONL(hostid);
2694
2695 pf->hostid = hostid;
2696 pf->hostid_set = 1;
2697
2698 if (pf->opts & PF_OPT_VERBOSE)
2699 printf("set hostid 0x%08x\n", ntohl(hostid));
2700 }
2701
2702 int
pfctl_load_hostid(struct pfctl * pf,u_int32_t hostid)2703 pfctl_load_hostid(struct pfctl *pf, u_int32_t hostid)
2704 {
2705 if (ioctl(dev, DIOCSETHOSTID, &hostid)) {
2706 warnx("DIOCSETHOSTID");
2707 return (1);
2708 }
2709 return (0);
2710 }
2711
2712 int
pfctl_load_reassembly(struct pfctl * pf,u_int32_t reassembly)2713 pfctl_load_reassembly(struct pfctl *pf, u_int32_t reassembly)
2714 {
2715 if (ioctl(dev, DIOCSETREASS, &reassembly)) {
2716 warnx("DIOCSETREASS");
2717 return (1);
2718 }
2719 return (0);
2720 }
2721
2722 int
pfctl_load_syncookies(struct pfctl * pf,u_int8_t val)2723 pfctl_load_syncookies(struct pfctl *pf, u_int8_t val)
2724 {
2725 struct pfctl_syncookies cookies;
2726
2727 bzero(&cookies, sizeof(cookies));
2728
2729 cookies.mode = val;
2730 cookies.lowwater = pf->syncookieswat[0];
2731 cookies.highwater = pf->syncookieswat[1];
2732
2733 if (pfctl_set_syncookies(dev, &cookies)) {
2734 warnx("DIOCSETSYNCOOKIES");
2735 return (1);
2736 }
2737 return (0);
2738 }
2739
2740 int
pfctl_cfg_syncookies(struct pfctl * pf,uint8_t val,struct pfctl_watermarks * w)2741 pfctl_cfg_syncookies(struct pfctl *pf, uint8_t val, struct pfctl_watermarks *w)
2742 {
2743 if (val != PF_SYNCOOKIES_ADAPTIVE && w != NULL) {
2744 warnx("syncookies start/end only apply to adaptive");
2745 return (1);
2746 }
2747 if (val == PF_SYNCOOKIES_ADAPTIVE && w != NULL) {
2748 if (!w->hi)
2749 w->hi = PF_SYNCOOKIES_HIWATPCT;
2750 if (!w->lo)
2751 w->lo = w->hi / 2;
2752 if (w->lo >= w->hi) {
2753 warnx("start must be higher than end");
2754 return (1);
2755 }
2756 pf->syncookieswat[0] = w->lo;
2757 pf->syncookieswat[1] = w->hi;
2758 pf->syncookieswat_set = 1;
2759 }
2760
2761 if (pf->opts & PF_OPT_VERBOSE) {
2762 if (val == PF_SYNCOOKIES_NEVER)
2763 printf("set syncookies never\n");
2764 else if (val == PF_SYNCOOKIES_ALWAYS)
2765 printf("set syncookies always\n");
2766 else if (val == PF_SYNCOOKIES_ADAPTIVE) {
2767 if (pf->syncookieswat_set)
2768 printf("set syncookies adaptive (start %u%%, "
2769 "end %u%%)\n", pf->syncookieswat[1],
2770 pf->syncookieswat[0]);
2771 else
2772 printf("set syncookies adaptive\n");
2773 } else { /* cannot happen */
2774 warnx("king bula ate all syncookies");
2775 return (1);
2776 }
2777 }
2778
2779 pf->syncookies = val;
2780 return (0);
2781 }
2782
2783 int
pfctl_do_set_debug(struct pfctl * pf,char * d)2784 pfctl_do_set_debug(struct pfctl *pf, char *d)
2785 {
2786 u_int32_t level;
2787 int ret;
2788
2789 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2790 return (0);
2791
2792 if (!strcmp(d, "none"))
2793 pf->debug = PF_DEBUG_NONE;
2794 else if (!strcmp(d, "urgent"))
2795 pf->debug = PF_DEBUG_URGENT;
2796 else if (!strcmp(d, "misc"))
2797 pf->debug = PF_DEBUG_MISC;
2798 else if (!strcmp(d, "loud"))
2799 pf->debug = PF_DEBUG_NOISY;
2800 else {
2801 warnx("unknown debug level \"%s\"", d);
2802 return (-1);
2803 }
2804
2805 pf->debug_set = 1;
2806 level = pf->debug;
2807
2808 if ((pf->opts & PF_OPT_NOACTION) == 0)
2809 if ((ret = pfctl_set_debug(pfh, level)) != 0)
2810 errc(1, ret, "DIOCSETDEBUG");
2811
2812 if (pf->opts & PF_OPT_VERBOSE)
2813 printf("set debug %s\n", d);
2814
2815 return (0);
2816 }
2817
2818 int
pfctl_load_debug(struct pfctl * pf,unsigned int level)2819 pfctl_load_debug(struct pfctl *pf, unsigned int level)
2820 {
2821 if (pfctl_set_debug(pf->h, level)) {
2822 warnx("DIOCSETDEBUG");
2823 return (1);
2824 }
2825 return (0);
2826 }
2827
2828 int
pfctl_set_interface_flags(struct pfctl * pf,char * ifname,int flags,int how)2829 pfctl_set_interface_flags(struct pfctl *pf, char *ifname, int flags, int how)
2830 {
2831 struct pfioc_iface pi;
2832 struct node_host *h = NULL, *n = NULL;
2833
2834 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2835 return (0);
2836
2837 bzero(&pi, sizeof(pi));
2838
2839 pi.pfiio_flags = flags;
2840
2841 /* Make sure our cache matches the kernel. If we set or clear the flag
2842 * for a group this applies to all members. */
2843 h = ifa_grouplookup(ifname, 0);
2844 for (n = h; n != NULL; n = n->next)
2845 pfctl_set_interface_flags(pf, n->ifname, flags, how);
2846
2847 if (strlcpy(pi.pfiio_name, ifname, sizeof(pi.pfiio_name)) >=
2848 sizeof(pi.pfiio_name))
2849 errx(1, "pfctl_set_interface_flags: strlcpy");
2850
2851 if ((pf->opts & PF_OPT_NOACTION) == 0) {
2852 if (how == 0) {
2853 if (ioctl(pf->dev, DIOCCLRIFFLAG, &pi))
2854 pfctl_err(pf->opts, 1, "DIOCCLRIFFLAG");
2855 } else {
2856 if (ioctl(pf->dev, DIOCSETIFFLAG, &pi))
2857 err(1, "DIOCSETIFFLAG");
2858 pfctl_check_skip_ifaces(ifname);
2859 }
2860 }
2861 return (0);
2862 }
2863
2864 void
pfctl_debug(int dev,u_int32_t level,int opts)2865 pfctl_debug(int dev, u_int32_t level, int opts)
2866 {
2867 int ret;
2868
2869 if ((ret = pfctl_set_debug(pfh, level)) != 0)
2870 errc(1, ret, "DIOCSETDEBUG");
2871 if ((opts & PF_OPT_QUIET) == 0) {
2872 fprintf(stderr, "debug level set to '");
2873 switch (level) {
2874 case PF_DEBUG_NONE:
2875 fprintf(stderr, "none");
2876 break;
2877 case PF_DEBUG_URGENT:
2878 fprintf(stderr, "urgent");
2879 break;
2880 case PF_DEBUG_MISC:
2881 fprintf(stderr, "misc");
2882 break;
2883 case PF_DEBUG_NOISY:
2884 fprintf(stderr, "loud");
2885 break;
2886 default:
2887 fprintf(stderr, "<invalid>");
2888 break;
2889 }
2890 fprintf(stderr, "'\n");
2891 }
2892 }
2893
2894 int
pfctl_test_altqsupport(int dev,int opts)2895 pfctl_test_altqsupport(int dev, int opts)
2896 {
2897 struct pfioc_altq pa;
2898
2899 pa.version = PFIOC_ALTQ_VERSION;
2900 if (ioctl(dev, DIOCGETALTQS, &pa)) {
2901 if (errno == ENODEV) {
2902 if (opts & PF_OPT_VERBOSE)
2903 fprintf(stderr, "No ALTQ support in kernel\n"
2904 "ALTQ related functions disabled\n");
2905 return (0);
2906 } else
2907 err(1, "DIOCGETALTQS");
2908 }
2909 return (1);
2910 }
2911
2912 int
pfctl_walk_show(int opts,struct pfioc_ruleset * pr,void * warg)2913 pfctl_walk_show(int opts, struct pfioc_ruleset *pr, void *warg)
2914 {
2915 if (pr->path[0]) {
2916 if (pr->path[0] != '_' || (opts & PF_OPT_VERBOSE))
2917 printf(" %s/%s\n", pr->path, pr->name);
2918 } else if (pr->name[0] != '_' || (opts & PF_OPT_VERBOSE))
2919 printf(" %s\n", pr->name);
2920
2921 return (0);
2922 }
2923
2924 int
pfctl_walk_get(int opts,struct pfioc_ruleset * pr,void * warg)2925 pfctl_walk_get(int opts, struct pfioc_ruleset *pr, void *warg)
2926 {
2927 struct pfr_anchoritem *pfra;
2928 struct pfr_anchors *anchors;
2929 int e;
2930
2931 anchors = (struct pfr_anchors *)warg;
2932
2933 pfra = malloc(sizeof(*pfra));
2934 if (pfra == NULL)
2935 err(1, "%s", __func__);
2936
2937 if (pr->path[0])
2938 e = asprintf(&pfra->pfra_anchorname, "%s/%s", pr->path,
2939 pr->name);
2940 else
2941 e = asprintf(&pfra->pfra_anchorname, "%s", pr->name);
2942
2943 if (e == -1)
2944 err(1, "%s", __func__);
2945
2946 SLIST_INSERT_HEAD(anchors, pfra, pfra_sle);
2947
2948 return (0);
2949 }
2950
2951 int
pfctl_walk_anchors(int dev,int opts,const char * anchor,int (walkf)(int,struct pfioc_ruleset *,void *),void * warg)2952 pfctl_walk_anchors(int dev, int opts, const char *anchor,
2953 int(walkf)(int, struct pfioc_ruleset *, void *), void *warg)
2954 {
2955 struct pfioc_ruleset pr;
2956 u_int32_t mnr, nr;
2957 int ret;
2958
2959 memset(&pr, 0, sizeof(pr));
2960 if ((ret = pfctl_get_rulesets(pfh, anchor, &mnr)) != 0)
2961 errx(1, "%s", pf_strerror(ret));
2962 for (nr = 0; nr < mnr; ++nr) {
2963 char sub[MAXPATHLEN];
2964
2965 if ((ret = pfctl_get_ruleset(pfh, anchor, nr, &pr)) != 0)
2966 errc(1, ret, "DIOCGETRULESET");
2967 if (!strcmp(pr.name, PF_RESERVED_ANCHOR))
2968 continue;
2969 sub[0] = '\0';
2970 if (walkf(opts, &pr, warg))
2971 return (-1);
2972
2973 if (pr.path[0])
2974 snprintf(sub, sizeof(sub), "%s/%s", pr.path, pr.name);
2975 else
2976 snprintf(sub, sizeof(sub), "%s", pr.name);
2977 if (pfctl_walk_anchors(dev, opts, sub, walkf, warg))
2978 return (-1);
2979 }
2980 return (0);
2981 }
2982
2983 int
pfctl_show_anchors(int dev,int opts,char * anchor)2984 pfctl_show_anchors(int dev, int opts, char *anchor)
2985 {
2986 return (
2987 pfctl_walk_anchors(dev, opts, anchor, pfctl_walk_show, NULL));
2988 }
2989
2990 struct pfr_anchors *
pfctl_get_anchors(int dev,char * anchor,int opts)2991 pfctl_get_anchors(int dev, char *anchor, int opts)
2992 {
2993 struct pfioc_ruleset pr;
2994 static struct pfr_anchors anchors;
2995 char *n;
2996
2997 SLIST_INIT(&anchors);
2998
2999 memset(&pr, 0, sizeof(pr));
3000 if (*anchor != '\0') {
3001 n = dirname(anchor);
3002 if (n[0] != '.' && n[1] != '\0')
3003 strlcpy(pr.path, n, sizeof(pr.path));
3004 n = basename(anchor);
3005 if (n != NULL)
3006 strlcpy(pr.name, n, sizeof(pr.name));
3007 }
3008
3009 /* insert a root anchor first. */
3010 pfctl_walk_get(opts, &pr, &anchors);
3011
3012 if (pfctl_walk_anchors(dev, opts, anchor, pfctl_walk_get, &anchors))
3013 errx(1, "%s failed to retrieve list of anchors, can't continue",
3014 __func__);
3015
3016 return (&anchors);
3017 }
3018
3019 int
pfctl_call_cleartables(int dev,int opts,struct pfr_anchoritem * pfra)3020 pfctl_call_cleartables(int dev, int opts, struct pfr_anchoritem *pfra)
3021 {
3022 /*
3023 * PF_OPT_QUIET makes pfctl_clear_tables() to stop printing number of
3024 * tables cleared for given anchor.
3025 */
3026 opts |= PF_OPT_QUIET;
3027 return ((pfctl_do_clear_tables(pfra->pfra_anchorname, opts) == -1) ?
3028 1 : 0);
3029 }
3030
3031 int
pfctl_call_clearrules(int dev,int opts,struct pfr_anchoritem * pfra)3032 pfctl_call_clearrules(int dev, int opts, struct pfr_anchoritem *pfra)
3033 {
3034 /*
3035 * PF_OPT_QUIET makes pfctl_clear_rules() to stop printing a 'rules
3036 * cleared' message for every anchor it deletes.
3037 */
3038 opts |= PF_OPT_QUIET;
3039 return (pfctl_flush_rules(dev, opts, pfra->pfra_anchorname));
3040 }
3041
3042 int
pfctl_call_clearanchors(int dev,int opts,struct pfr_anchoritem * pfra)3043 pfctl_call_clearanchors(int dev, int opts, struct pfr_anchoritem *pfra)
3044 {
3045 int rv = 0;
3046
3047 rv |= pfctl_call_cleartables(dev, opts, pfra);
3048 rv |= pfctl_call_clearrules(dev, opts, pfra);
3049
3050 return (rv);
3051 }
3052
3053 int
pfctl_recurse(int dev,int opts,char * anchorname,int (* walkf)(int,int,struct pfr_anchoritem *))3054 pfctl_recurse(int dev, int opts, char *anchorname,
3055 int(*walkf)(int, int, struct pfr_anchoritem *))
3056 {
3057 int rv = 0;
3058 struct pfr_anchors *anchors;
3059 struct pfr_anchoritem *pfra, *pfra_save;
3060
3061 anchors = pfctl_get_anchors(dev, anchorname, opts);
3062 /*
3063 * While traversing the list, pfctl_clear_*() must always return
3064 * so that failures on one anchor do not prevent clearing others.
3065 */
3066 opts |= PF_OPT_IGNFAIL;
3067 printf("Removing:\n");
3068 SLIST_FOREACH_SAFE(pfra, anchors, pfra_sle, pfra_save) {
3069 printf(" %s\n",
3070 (*pfra->pfra_anchorname == '\0') ? "/" :
3071 pfra->pfra_anchorname);
3072 rv |= walkf(dev, opts, pfra);
3073 SLIST_REMOVE(anchors, pfra, pfr_anchoritem, pfra_sle);
3074 free(pfra->pfra_anchorname);
3075 free(pfra);
3076 }
3077
3078 return (rv);
3079 }
3080
3081 int
pfctl_show_eth_anchors(int dev,int opts,char * anchorname)3082 pfctl_show_eth_anchors(int dev, int opts, char *anchorname)
3083 {
3084 struct pfctl_eth_rulesets_info ri;
3085 struct pfctl_eth_ruleset_info rs;
3086 int ret;
3087
3088 if ((ret = pfctl_get_eth_rulesets_info(dev, &ri, anchorname)) != 0) {
3089 if (ret == ENOENT)
3090 fprintf(stderr, "Anchor '%s' not found.\n",
3091 anchorname);
3092 else
3093 errc(1, ret, "DIOCGETETHRULESETS");
3094 return (-1);
3095 }
3096
3097 for (int nr = 0; nr < ri.nr; nr++) {
3098 char sub[MAXPATHLEN];
3099
3100 if ((ret = pfctl_get_eth_ruleset(dev, anchorname, nr, &rs)) != 0)
3101 errc(1, ret, "DIOCGETETHRULESET");
3102
3103 if (!strcmp(rs.name, PF_RESERVED_ANCHOR))
3104 continue;
3105 sub[0] = 0;
3106 if (rs.path[0]) {
3107 strlcat(sub, rs.path, sizeof(sub));
3108 strlcat(sub, "/", sizeof(sub));
3109 }
3110 strlcat(sub, rs.name, sizeof(sub));
3111 if (sub[0] != '_' || (opts & PF_OPT_VERBOSE))
3112 printf(" %s\n", sub);
3113 if ((opts & PF_OPT_VERBOSE) && pfctl_show_eth_anchors(dev, opts, sub))
3114 return (-1);
3115 }
3116 return (0);
3117 }
3118
3119 const char *
pfctl_lookup_option(char * cmd,const char * const * list)3120 pfctl_lookup_option(char *cmd, const char * const *list)
3121 {
3122 if (cmd != NULL && *cmd)
3123 for (; *list; list++)
3124 if (!strncmp(cmd, *list, strlen(cmd)))
3125 return (*list);
3126 return (NULL);
3127 }
3128
3129 void
pfctl_reset(int dev,int opts)3130 pfctl_reset(int dev, int opts)
3131 {
3132 struct pfctl pf;
3133 struct pfr_buffer t;
3134 int i;
3135
3136 pf.dev = dev;
3137 pf.h = pfh;
3138 pfctl_init_options(&pf);
3139
3140 /* Force reset upon pfctl_load_options() */
3141 pf.debug_set = 1;
3142 pf.reass_set = 1;
3143 pf.syncookieswat_set = 1;
3144 pf.ifname = strdup("none");
3145 if (pf.ifname == NULL)
3146 err(1, "%s: strdup", __func__);
3147 pf.ifname_set = 1;
3148
3149 memset(&t, 0, sizeof(t));
3150 t.pfrb_type = PFRB_TRANS;
3151 if (pfctl_trans(dev, &t, DIOCXBEGIN, 0))
3152 err(1, "%s: DIOCXBEGIN", __func__);
3153
3154 for (i = 0; pf_limits[i].name; i++)
3155 pf.limit_set[pf_limits[i].index] = 1;
3156
3157 for (i = 0; pf_timeouts[i].name; i++)
3158 pf.timeout_set[pf_timeouts[i].timeout] = 1;
3159
3160 pfctl_load_options(&pf);
3161
3162 if (pfctl_trans(dev, &t, DIOCXCOMMIT, 0))
3163 err(1, "%s: DIOCXCOMMIT", __func__);
3164
3165 pfctl_clear_interface_flags(dev, opts);
3166 }
3167
3168 int
main(int argc,char * argv[])3169 main(int argc, char *argv[])
3170 {
3171 int ch;
3172 int mode = O_RDONLY;
3173 int opts = 0;
3174 int optimize = PF_OPTIMIZE_BASIC;
3175 char anchorname[MAXPATHLEN];
3176 char *path;
3177
3178 if (argc < 2)
3179 usage();
3180
3181 while ((ch = getopt(argc, argv,
3182 "a:AdD:eqf:F:ghi:k:K:mMnNOo:Pp:rRs:St:T:vx:z")) != -1) {
3183 switch (ch) {
3184 case 'a':
3185 anchoropt = optarg;
3186 break;
3187 case 'd':
3188 opts |= PF_OPT_DISABLE;
3189 mode = O_RDWR;
3190 break;
3191 case 'D':
3192 if (pfctl_cmdline_symset(optarg) < 0)
3193 warnx("could not parse macro definition %s",
3194 optarg);
3195 break;
3196 case 'e':
3197 opts |= PF_OPT_ENABLE;
3198 mode = O_RDWR;
3199 break;
3200 case 'q':
3201 opts |= PF_OPT_QUIET;
3202 break;
3203 case 'F':
3204 clearopt = pfctl_lookup_option(optarg, clearopt_list);
3205 if (clearopt == NULL) {
3206 warnx("Unknown flush modifier '%s'", optarg);
3207 usage();
3208 }
3209 mode = O_RDWR;
3210 break;
3211 case 'i':
3212 ifaceopt = optarg;
3213 break;
3214 case 'k':
3215 if (state_killers >= 2) {
3216 warnx("can only specify -k twice");
3217 usage();
3218 /* NOTREACHED */
3219 }
3220 state_kill[state_killers++] = optarg;
3221 mode = O_RDWR;
3222 break;
3223 case 'K':
3224 if (src_node_killers >= 2) {
3225 warnx("can only specify -K twice");
3226 usage();
3227 /* NOTREACHED */
3228 }
3229 src_node_kill[src_node_killers++] = optarg;
3230 mode = O_RDWR;
3231 break;
3232 case 'm':
3233 opts |= PF_OPT_MERGE;
3234 break;
3235 case 'M':
3236 opts |= PF_OPT_KILLMATCH;
3237 break;
3238 case 'n':
3239 opts |= PF_OPT_NOACTION;
3240 break;
3241 case 'N':
3242 loadopt |= PFCTL_FLAG_NAT;
3243 break;
3244 case 'r':
3245 opts |= PF_OPT_USEDNS;
3246 break;
3247 case 'f':
3248 rulesopt = optarg;
3249 mode = O_RDWR;
3250 break;
3251 case 'g':
3252 opts |= PF_OPT_DEBUG;
3253 break;
3254 case 'A':
3255 loadopt |= PFCTL_FLAG_ALTQ;
3256 break;
3257 case 'R':
3258 loadopt |= PFCTL_FLAG_FILTER;
3259 break;
3260 case 'o':
3261 optiopt = pfctl_lookup_option(optarg, optiopt_list);
3262 if (optiopt == NULL) {
3263 warnx("Unknown optimization '%s'", optarg);
3264 usage();
3265 }
3266 opts |= PF_OPT_OPTIMIZE;
3267 break;
3268 case 'O':
3269 loadopt |= PFCTL_FLAG_OPTION;
3270 break;
3271 case 'p':
3272 pf_device = optarg;
3273 break;
3274 case 'P':
3275 opts |= PF_OPT_NUMERIC;
3276 break;
3277 case 's':
3278 showopt = pfctl_lookup_option(optarg, showopt_list);
3279 if (showopt == NULL) {
3280 warnx("Unknown show modifier '%s'", optarg);
3281 usage();
3282 }
3283 break;
3284 case 'S':
3285 opts |= PF_OPT_NODNS;
3286 break;
3287 case 't':
3288 tableopt = optarg;
3289 break;
3290 case 'T':
3291 tblcmdopt = pfctl_lookup_option(optarg, tblcmdopt_list);
3292 if (tblcmdopt == NULL) {
3293 warnx("Unknown table command '%s'", optarg);
3294 usage();
3295 }
3296 break;
3297 case 'v':
3298 if (opts & PF_OPT_VERBOSE)
3299 opts |= PF_OPT_VERBOSE2;
3300 opts |= PF_OPT_VERBOSE;
3301 break;
3302 case 'x':
3303 debugopt = pfctl_lookup_option(optarg, debugopt_list);
3304 if (debugopt == NULL) {
3305 warnx("Unknown debug level '%s'", optarg);
3306 usage();
3307 }
3308 mode = O_RDWR;
3309 break;
3310 case 'z':
3311 opts |= PF_OPT_CLRRULECTRS;
3312 mode = O_RDWR;
3313 break;
3314 case 'h':
3315 /* FALLTHROUGH */
3316 default:
3317 usage();
3318 /* NOTREACHED */
3319 }
3320 }
3321
3322 if ((opts & PF_OPT_NODNS) && (opts & PF_OPT_USEDNS))
3323 errx(1, "-N and -r are mutually exclusive");
3324
3325 if ((tblcmdopt == NULL) ^ (tableopt == NULL))
3326 usage();
3327
3328 if (tblcmdopt != NULL) {
3329 argc -= optind;
3330 argv += optind;
3331 ch = *tblcmdopt;
3332 if (ch == 'l') {
3333 loadopt |= PFCTL_FLAG_TABLE;
3334 tblcmdopt = NULL;
3335 } else
3336 mode = strchr("st", ch) ? O_RDONLY : O_RDWR;
3337 } else if (argc != optind) {
3338 warnx("unknown command line argument: %s ...", argv[optind]);
3339 usage();
3340 /* NOTREACHED */
3341 }
3342 if (loadopt == 0)
3343 loadopt = ~0;
3344
3345 memset(anchorname, 0, sizeof(anchorname));
3346 if (anchoropt != NULL) {
3347 int len = strlen(anchoropt);
3348
3349 if (anchoropt[0] == '\0')
3350 errx(1, "anchor name must not be empty");
3351 if (mode == O_RDONLY && showopt == NULL && tblcmdopt == NULL) {
3352 warnx("anchors apply to -f, -F, -s, and -T only");
3353 usage();
3354 }
3355 if (mode == O_RDWR && tblcmdopt == NULL &&
3356 (anchoropt[0] == '_' || strstr(anchoropt, "/_") != NULL))
3357 errx(1, "anchor names beginning with '_' cannot "
3358 "be modified from the command line");
3359
3360 if (len >= 1 && anchoropt[len - 1] == '*') {
3361 if (len >= 2 && anchoropt[len - 2] == '/')
3362 anchoropt[len - 2] = '\0';
3363 else
3364 anchoropt[len - 1] = '\0';
3365 opts |= PF_OPT_RECURSE;
3366 }
3367 if (strlcpy(anchorname, anchoropt,
3368 sizeof(anchorname)) >= sizeof(anchorname))
3369 errx(1, "anchor name '%s' too long",
3370 anchoropt);
3371 loadopt &= PFCTL_FLAG_FILTER|PFCTL_FLAG_NAT|PFCTL_FLAG_TABLE|PFCTL_FLAG_ETH;
3372 }
3373
3374 if ((opts & PF_OPT_NOACTION) == 0) {
3375 dev = open(pf_device, mode);
3376 if (dev == -1)
3377 err(1, "%s", pf_device);
3378 altqsupport = pfctl_test_altqsupport(dev, opts);
3379 } else {
3380 dev = open(pf_device, O_RDONLY);
3381 if (dev >= 0)
3382 opts |= PF_OPT_DUMMYACTION;
3383 /* turn off options */
3384 opts &= ~ (PF_OPT_DISABLE | PF_OPT_ENABLE);
3385 clearopt = showopt = debugopt = NULL;
3386 #if !defined(ENABLE_ALTQ)
3387 altqsupport = 0;
3388 #else
3389 altqsupport = 1;
3390 #endif
3391 }
3392 pfh = pfctl_open(pf_device);
3393 if (pfh == NULL)
3394 err(1, "Failed to open netlink");
3395
3396 if (opts & PF_OPT_DISABLE)
3397 if (pfctl_disable(dev, opts))
3398 exit_val = 1;
3399
3400 if ((path = calloc(1, MAXPATHLEN)) == NULL)
3401 errx(1, "%s: calloc", __func__);
3402
3403 if (showopt != NULL) {
3404 switch (*showopt) {
3405 case 'A':
3406 pfctl_show_anchors(dev, opts, anchorname);
3407 if (opts & PF_OPT_VERBOSE2)
3408 printf("Ethernet:\n");
3409 pfctl_show_eth_anchors(dev, opts, anchorname);
3410 break;
3411 case 'r':
3412 pfctl_load_fingerprints(dev, opts);
3413 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_RULES,
3414 anchorname, 0, 0);
3415 break;
3416 case 'l':
3417 pfctl_load_fingerprints(dev, opts);
3418 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_LABELS,
3419 anchorname, 0, 0);
3420 break;
3421 case 'n':
3422 pfctl_load_fingerprints(dev, opts);
3423 pfctl_show_nat(dev, path, opts, anchorname, 0, 0);
3424 break;
3425 case 'q':
3426 pfctl_show_altq(dev, ifaceopt, opts,
3427 opts & PF_OPT_VERBOSE2);
3428 break;
3429 case 's':
3430 pfctl_show_states(dev, ifaceopt, opts);
3431 break;
3432 case 'S':
3433 pfctl_show_src_nodes(dev, opts);
3434 break;
3435 case 'i':
3436 pfctl_show_status(dev, opts);
3437 break;
3438 case 'R':
3439 exit_val = pfctl_show_running(dev);
3440 break;
3441 case 't':
3442 pfctl_show_timeouts(dev, opts);
3443 break;
3444 case 'm':
3445 pfctl_show_limits(dev, opts);
3446 break;
3447 case 'e':
3448 pfctl_show_eth_rules(dev, path, opts, 0, anchorname, 0,
3449 0);
3450 break;
3451 case 'a':
3452 opts |= PF_OPT_SHOWALL;
3453 pfctl_load_fingerprints(dev, opts);
3454
3455 pfctl_show_eth_rules(dev, path, opts, 0, anchorname, 0,
3456 0);
3457
3458 pfctl_show_nat(dev, path, opts, anchorname, 0, 0);
3459 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_RULES,
3460 anchorname, 0, 0);
3461 pfctl_show_altq(dev, ifaceopt, opts, 0);
3462 pfctl_show_states(dev, ifaceopt, opts);
3463 pfctl_show_src_nodes(dev, opts);
3464 pfctl_show_status(dev, opts);
3465 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_LABELS,
3466 anchorname, 0, 0);
3467 pfctl_show_timeouts(dev, opts);
3468 pfctl_show_limits(dev, opts);
3469 pfctl_show_tables(anchorname, opts);
3470 pfctl_show_fingerprints(opts);
3471 break;
3472 case 'T':
3473 pfctl_show_tables(anchorname, opts);
3474 break;
3475 case 'o':
3476 pfctl_load_fingerprints(dev, opts);
3477 pfctl_show_fingerprints(opts);
3478 break;
3479 case 'I':
3480 pfctl_show_ifaces(ifaceopt, opts);
3481 break;
3482 case 'c':
3483 pfctl_show_creators(opts);
3484 break;
3485 }
3486 }
3487
3488 if ((opts & PF_OPT_CLRRULECTRS) && showopt == NULL) {
3489 pfctl_show_eth_rules(dev, path, opts, PFCTL_SHOW_NOTHING,
3490 anchorname, 0, 0);
3491 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_NOTHING,
3492 anchorname, 0, 0);
3493 }
3494
3495 if (clearopt != NULL) {
3496 switch (*clearopt) {
3497 case 'e':
3498 pfctl_flush_eth_rules(dev, opts, anchorname);
3499 break;
3500 case 'r':
3501 if (opts & PF_OPT_RECURSE)
3502 pfctl_recurse(dev, opts, anchorname,
3503 pfctl_call_clearrules);
3504 else
3505 pfctl_flush_rules(dev, opts, anchorname);
3506 break;
3507 case 'n':
3508 pfctl_flush_nat(dev, opts, anchorname);
3509 break;
3510 case 'q':
3511 pfctl_clear_altq(dev, opts);
3512 break;
3513 case 's':
3514 pfctl_clear_iface_states(dev, ifaceopt, opts);
3515 break;
3516 case 'S':
3517 pfctl_clear_src_nodes(dev, opts);
3518 break;
3519 case 'i':
3520 pfctl_clear_stats(pfh, opts);
3521 break;
3522 case 'a':
3523 if (ifaceopt) {
3524 warnx("don't specify an interface with -Fall");
3525 usage();
3526 /* NOTREACHED */
3527 }
3528 pfctl_flush_eth_rules(dev, opts, anchorname);
3529 pfctl_flush_rules(dev, opts, anchorname);
3530 pfctl_flush_nat(dev, opts, anchorname);
3531 if (opts & PF_OPT_RECURSE)
3532 pfctl_recurse(dev, opts, anchorname,
3533 pfctl_call_clearanchors);
3534 else {
3535 pfctl_do_clear_tables(anchorname, opts);
3536 pfctl_flush_rules(dev, opts, anchorname);
3537 }
3538 if (!*anchorname) {
3539 pfctl_clear_altq(dev, opts);
3540 pfctl_clear_iface_states(dev, ifaceopt, opts);
3541 pfctl_clear_src_nodes(dev, opts);
3542 pfctl_clear_stats(pfh, opts);
3543 pfctl_clear_fingerprints(dev, opts);
3544 pfctl_reset(dev, opts);
3545 }
3546 break;
3547 case 'o':
3548 pfctl_clear_fingerprints(dev, opts);
3549 break;
3550 case 'T':
3551 if ((opts & PF_OPT_RECURSE) == 0)
3552 pfctl_do_clear_tables(anchorname, opts);
3553 else
3554 pfctl_recurse(dev, opts, anchorname,
3555 pfctl_call_cleartables);
3556 break;
3557 case 'R':
3558 pfctl_reset(dev, opts);
3559 break;
3560 }
3561 }
3562 if (state_killers) {
3563 if (!strcmp(state_kill[0], "label"))
3564 pfctl_label_kill_states(dev, ifaceopt, opts);
3565 else if (!strcmp(state_kill[0], "id"))
3566 pfctl_id_kill_states(dev, ifaceopt, opts);
3567 else if (!strcmp(state_kill[0], "gateway"))
3568 pfctl_gateway_kill_states(dev, ifaceopt, opts);
3569 else if (!strcmp(state_kill[0], "key"))
3570 pfctl_key_kill_states(dev, ifaceopt, opts);
3571 else
3572 pfctl_net_kill_states(dev, ifaceopt, opts);
3573 }
3574
3575 if (src_node_killers)
3576 pfctl_kill_src_nodes(dev, opts);
3577
3578 if (tblcmdopt != NULL) {
3579 exit_val = pfctl_table(argc, argv, tableopt,
3580 tblcmdopt, rulesopt, anchorname, opts);
3581 rulesopt = NULL;
3582 }
3583 if (optiopt != NULL) {
3584 switch (*optiopt) {
3585 case 'n':
3586 optimize = 0;
3587 break;
3588 case 'b':
3589 optimize |= PF_OPTIMIZE_BASIC;
3590 break;
3591 case 'o':
3592 case 'p':
3593 optimize |= PF_OPTIMIZE_PROFILE;
3594 break;
3595 }
3596 }
3597
3598 if ((rulesopt != NULL) && (loadopt & PFCTL_FLAG_OPTION) &&
3599 !anchorname[0] && !(opts & PF_OPT_NOACTION))
3600 pfctl_get_skip_ifaces();
3601
3602 if (rulesopt != NULL && !(opts & PF_OPT_MERGE) &&
3603 !anchorname[0] && (loadopt & PFCTL_FLAG_OPTION))
3604 if (pfctl_file_fingerprints(dev, opts, PF_OSFP_FILE))
3605 exit_val = 1;
3606
3607 if (rulesopt != NULL) {
3608 if (pfctl_rules(dev, rulesopt, opts, optimize,
3609 anchorname, NULL))
3610 exit_val = 1;
3611 }
3612
3613 if (opts & PF_OPT_ENABLE)
3614 if (pfctl_enable(dev, opts))
3615 exit_val = 1;
3616
3617 if (debugopt != NULL) {
3618 switch (*debugopt) {
3619 case 'n':
3620 pfctl_debug(dev, PF_DEBUG_NONE, opts);
3621 break;
3622 case 'u':
3623 pfctl_debug(dev, PF_DEBUG_URGENT, opts);
3624 break;
3625 case 'm':
3626 pfctl_debug(dev, PF_DEBUG_MISC, opts);
3627 break;
3628 case 'l':
3629 pfctl_debug(dev, PF_DEBUG_NOISY, opts);
3630 break;
3631 }
3632 }
3633
3634 exit(exit_val);
3635 }
3636
3637 char *
pf_strerror(int errnum)3638 pf_strerror(int errnum)
3639 {
3640 switch (errnum) {
3641 case ESRCH:
3642 return "Table does not exist.";
3643 case EINVAL:
3644 case ENOENT:
3645 return "Anchor does not exist.";
3646 default:
3647 return strerror(errnum);
3648 }
3649 }
3650