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 if (ret == EINVAL)
1345 fprintf(stderr, "Anchor '%s' "
1346 "not found.\n", anchorname);
1347 else
1348 errc(1, ret, "DIOCGETRULESETS");
1349 }
1350
1351 for (nr = 0; nr < mnr; ++nr) {
1352 if ((ret = pfctl_get_ruleset(pfh, npath, nr, &prs)) != 0)
1353 errc(1, ret, "DIOCGETRULESET");
1354 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1355 printf("anchor \"%s\" all {\n", prs.name);
1356 pfctl_show_rules(dev, npath, opts,
1357 format, prs.name, depth + 1, 0);
1358 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1359 printf("}\n");
1360 }
1361 path[len] = '\0';
1362 return (0);
1363 }
1364
1365 if (opts & PF_OPT_SHOWALL) {
1366 ret = pfctl_get_rules_info_h(pfh, &ri, PF_PASS, path);
1367 if (ret != 0) {
1368 warnc(ret, "DIOCGETRULES");
1369 goto error;
1370 }
1371 header++;
1372 }
1373 ret = pfctl_get_rules_info_h(pfh, &ri, PF_SCRUB, path);
1374 if (ret != 0) {
1375 warnc(ret, "DIOCGETRULES");
1376 goto error;
1377 }
1378 if (opts & PF_OPT_SHOWALL) {
1379 if (format == PFCTL_SHOW_RULES && (ri.nr > 0 || header))
1380 pfctl_print_title("FILTER RULES:");
1381 else if (format == PFCTL_SHOW_LABELS && labels)
1382 pfctl_print_title("LABEL COUNTERS:");
1383 }
1384
1385 for (nr = 0; nr < ri.nr; ++nr) {
1386 if ((ret = pfctl_get_clear_rule_h(pfh, nr, ri.ticket, path, PF_SCRUB,
1387 &rule, anchor_call, opts & PF_OPT_CLRRULECTRS)) != 0) {
1388 warnc(ret, "DIOCGETRULENV");
1389 goto error;
1390 }
1391
1392 if (pfctl_get_pool(dev, &rule.rdr,
1393 nr, ri.ticket, PF_SCRUB, path, PF_RDR) != 0)
1394 goto error;
1395
1396 if (pfctl_get_pool(dev, &rule.nat,
1397 nr, ri.ticket, PF_SCRUB, path, PF_NAT) != 0)
1398 goto error;
1399
1400 if (pfctl_get_pool(dev, &rule.route,
1401 nr, ri.ticket, PF_SCRUB, path, PF_RT) != 0)
1402 goto error;
1403
1404 switch (format) {
1405 case PFCTL_SHOW_LABELS:
1406 break;
1407 case PFCTL_SHOW_RULES:
1408 if (rule.label[0][0] && (opts & PF_OPT_SHOWALL))
1409 labels = 1;
1410 print_rule(&rule, anchor_call, rule_numbers, numeric);
1411 printf("\n");
1412 pfctl_print_rule_counters(&rule, opts);
1413 break;
1414 case PFCTL_SHOW_NOTHING:
1415 break;
1416 }
1417 pfctl_clear_pool(&rule.rdr);
1418 pfctl_clear_pool(&rule.nat);
1419 pfctl_clear_pool(&rule.route);
1420 }
1421 ret = pfctl_get_rules_info_h(pfh, &ri, PF_PASS, path);
1422 if (ret != 0) {
1423 warnc(ret, "DIOCGETRULES");
1424 goto error;
1425 }
1426 for (nr = 0; nr < ri.nr; ++nr) {
1427 if ((ret = pfctl_get_clear_rule_h(pfh, nr, ri.ticket, path, PF_PASS,
1428 &rule, anchor_call, opts & PF_OPT_CLRRULECTRS)) != 0) {
1429 warnc(ret, "DIOCGETRULE");
1430 goto error;
1431 }
1432
1433 if (pfctl_get_pool(dev, &rule.rdr,
1434 nr, ri.ticket, PF_PASS, path, PF_RDR) != 0)
1435 goto error;
1436
1437 if (pfctl_get_pool(dev, &rule.nat,
1438 nr, ri.ticket, PF_PASS, path, PF_NAT) != 0)
1439 goto error;
1440
1441 if (pfctl_get_pool(dev, &rule.route,
1442 nr, ri.ticket, PF_PASS, path, PF_RT) != 0)
1443 goto error;
1444
1445 switch (format) {
1446 case PFCTL_SHOW_LABELS: {
1447 bool show = false;
1448 int i = 0;
1449
1450 while (rule.label[i][0]) {
1451 printf("%s ", rule.label[i++]);
1452 show = true;
1453 }
1454
1455 if (show) {
1456 printf("%llu %llu %llu %llu"
1457 " %llu %llu %llu %ju\n",
1458 (unsigned long long)rule.evaluations,
1459 (unsigned long long)(rule.packets[0] +
1460 rule.packets[1]),
1461 (unsigned long long)(rule.bytes[0] +
1462 rule.bytes[1]),
1463 (unsigned long long)rule.packets[0],
1464 (unsigned long long)rule.bytes[0],
1465 (unsigned long long)rule.packets[1],
1466 (unsigned long long)rule.bytes[1],
1467 (uintmax_t)rule.states_tot);
1468 }
1469
1470 if (anchor_call[0] &&
1471 (((p = strrchr(anchor_call, '/')) ?
1472 p[1] == '_' : anchor_call[0] == '_') ||
1473 opts & PF_OPT_RECURSE)) {
1474 pfctl_show_rules(dev, npath, opts, format,
1475 anchor_call, depth, rule.anchor_wildcard);
1476 }
1477 break;
1478 }
1479 case PFCTL_SHOW_RULES:
1480 if (rule.label[0][0] && (opts & PF_OPT_SHOWALL))
1481 labels = 1;
1482 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1483 print_rule(&rule, anchor_call, rule_numbers, numeric);
1484
1485 /*
1486 * If this is a 'unnamed' brace notation
1487 * anchor, OR the user has explicitly requested
1488 * recursion, print it recursively.
1489 */
1490 if (anchor_call[0] &&
1491 (((p = strrchr(anchor_call, '/')) ?
1492 p[1] == '_' : anchor_call[0] == '_') ||
1493 opts & PF_OPT_RECURSE)) {
1494 printf(" {\n");
1495 pfctl_print_rule_counters(&rule, opts);
1496 pfctl_show_rules(dev, npath, opts, format,
1497 anchor_call, depth + 1,
1498 rule.anchor_wildcard);
1499 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1500 printf("}\n");
1501 } else {
1502 printf("\n");
1503 pfctl_print_rule_counters(&rule, opts);
1504 }
1505 break;
1506 case PFCTL_SHOW_NOTHING:
1507 break;
1508 }
1509 pfctl_clear_pool(&rule.rdr);
1510 pfctl_clear_pool(&rule.nat);
1511 }
1512
1513 error:
1514 path[len] = '\0';
1515 return (ret);
1516 }
1517
1518 int
pfctl_show_nat(int dev,const char * path,int opts,char * anchorname,int depth,int wildcard)1519 pfctl_show_nat(int dev, const char *path, int opts, char *anchorname, int depth,
1520 int wildcard)
1521 {
1522 struct pfctl_rules_info ri;
1523 struct pfctl_rule rule;
1524 char anchor_call[MAXPATHLEN];
1525 u_int32_t nr;
1526 static int nattype[3] = { PF_NAT, PF_RDR, PF_BINAT };
1527 int i, dotitle = opts & PF_OPT_SHOWALL;
1528 int ret;
1529 int len = strlen(path);
1530 char *npath, *p;
1531
1532 /*
1533 * Truncate a trailing / and * on an anchorname before searching for
1534 * the ruleset, this is syntactic sugar that doesn't actually make it
1535 * to the kernel.
1536 */
1537 if ((p = strrchr(anchorname, '/')) != NULL &&
1538 p[1] == '*' && p[2] == '\0') {
1539 p[0] = '\0';
1540 }
1541
1542 if ((npath = calloc(1, MAXPATHLEN)) == NULL)
1543 errx(1, "calloc");
1544
1545 if (anchorname[0] == '/') {
1546 snprintf(npath, MAXPATHLEN, "%s", anchorname);
1547 } else {
1548 snprintf(npath, MAXPATHLEN, "%s", path);
1549 if (npath[0])
1550 snprintf(&npath[len], MAXPATHLEN - len, "/%s", anchorname);
1551 else
1552 snprintf(&npath[len], MAXPATHLEN - len, "%s", anchorname);
1553 }
1554
1555 /*
1556 * If this anchor was called with a wildcard path, go through
1557 * the rulesets in the anchor rather than the rules.
1558 */
1559 if (wildcard && (opts & PF_OPT_RECURSE)) {
1560 struct pfioc_ruleset prs;
1561 u_int32_t mnr, nr;
1562 memset(&prs, 0, sizeof(prs));
1563 if ((ret = pfctl_get_rulesets(pfh, npath, &mnr)) != 0) {
1564 if (ret == EINVAL)
1565 fprintf(stderr, "NAT anchor '%s' "
1566 "not found.\n", anchorname);
1567 else
1568 errc(1, ret, "DIOCGETRULESETS");
1569 }
1570
1571 for (nr = 0; nr < mnr; ++nr) {
1572 if ((ret = pfctl_get_ruleset(pfh, npath, nr, &prs)) != 0)
1573 errc(1, ret, "DIOCGETRULESET");
1574 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1575 printf("nat-anchor \"%s\" all {\n", prs.name);
1576 pfctl_show_nat(dev, npath, opts,
1577 prs.name, depth + 1, 0);
1578 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1579 printf("}\n");
1580 }
1581 npath[len] = '\0';
1582 return (0);
1583 }
1584
1585 for (i = 0; i < 3; i++) {
1586 ret = pfctl_get_rules_info_h(pfh, &ri, nattype[i], npath);
1587 if (ret != 0) {
1588 warnc(ret, "DIOCGETRULES");
1589 return (-1);
1590 }
1591 for (nr = 0; nr < ri.nr; ++nr) {
1592 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1593
1594 if ((ret = pfctl_get_rule_h(pfh, nr, ri.ticket, npath,
1595 nattype[i], &rule, anchor_call)) != 0) {
1596 warnc(ret, "DIOCGETRULE");
1597 return (-1);
1598 }
1599 if (pfctl_get_pool(dev, &rule.rdr, nr,
1600 ri.ticket, nattype[i], npath, PF_RDR) != 0)
1601 return (-1);
1602 if (pfctl_get_pool(dev, &rule.nat, nr,
1603 ri.ticket, nattype[i], npath, PF_NAT) != 0)
1604 return (-1);
1605 if (pfctl_get_pool(dev, &rule.route, nr,
1606 ri.ticket, nattype[i], npath, PF_RT) != 0)
1607 return (-1);
1608
1609 if (dotitle) {
1610 pfctl_print_title("TRANSLATION RULES:");
1611 dotitle = 0;
1612 }
1613 print_rule(&rule, anchor_call,
1614 opts & PF_OPT_VERBOSE2, opts & PF_OPT_NUMERIC);
1615 if (anchor_call[0] &&
1616 (((p = strrchr(anchor_call, '/')) ?
1617 p[1] == '_' : anchor_call[0] == '_') ||
1618 opts & PF_OPT_RECURSE)) {
1619 printf(" {\n");
1620 pfctl_print_rule_counters(&rule, opts);
1621 pfctl_show_nat(dev, npath, opts, anchor_call,
1622 depth + 1, rule.anchor_wildcard);
1623 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1624 printf("}\n");
1625 } else {
1626 printf("\n");
1627 pfctl_print_rule_counters(&rule, opts);
1628 }
1629 }
1630 }
1631 return (0);
1632 }
1633
1634 static int
pfctl_print_src_node(struct pfctl_src_node * sn,void * arg)1635 pfctl_print_src_node(struct pfctl_src_node *sn, void *arg)
1636 {
1637 int *opts = (int *)arg;
1638
1639 if (*opts & PF_OPT_SHOWALL) {
1640 pfctl_print_title("SOURCE TRACKING NODES:");
1641 *opts &= ~PF_OPT_SHOWALL;
1642 }
1643
1644 print_src_node(sn, *opts);
1645
1646 return (0);
1647 }
1648
1649 int
pfctl_show_src_nodes(int dev,int opts)1650 pfctl_show_src_nodes(int dev, int opts)
1651 {
1652 int error;
1653
1654 error = pfctl_get_srcnodes(pfh, pfctl_print_src_node, &opts);
1655
1656 return (error);
1657 }
1658
1659 struct pfctl_show_state_arg {
1660 int opts;
1661 int dotitle;
1662 const char *iface;
1663 };
1664
1665 static int
pfctl_show_state(struct pfctl_state * s,void * arg)1666 pfctl_show_state(struct pfctl_state *s, void *arg)
1667 {
1668 struct pfctl_show_state_arg *a = (struct pfctl_show_state_arg *)arg;
1669
1670 if (a->dotitle) {
1671 pfctl_print_title("STATES:");
1672 a->dotitle = 0;
1673 }
1674 print_state(s, a->opts);
1675
1676 return (0);
1677 }
1678
1679 int
pfctl_show_states(int dev,const char * iface,int opts)1680 pfctl_show_states(int dev, const char *iface, int opts)
1681 {
1682 struct pfctl_show_state_arg arg;
1683 struct pfctl_state_filter filter = {};
1684
1685 if (iface != NULL)
1686 strlcpy(filter.ifname, iface, IFNAMSIZ);
1687
1688 arg.opts = opts;
1689 arg.dotitle = opts & PF_OPT_SHOWALL;
1690 arg.iface = iface;
1691
1692 if (pfctl_get_filtered_states_iter(&filter, pfctl_show_state, &arg))
1693 return (-1);
1694
1695 return (0);
1696 }
1697
1698 int
pfctl_show_status(int dev,int opts)1699 pfctl_show_status(int dev, int opts)
1700 {
1701 struct pfctl_status *status;
1702 struct pfctl_syncookies cookies;
1703 int ret;
1704
1705 if ((status = pfctl_get_status_h(pfh)) == NULL) {
1706 warn("DIOCGETSTATUS");
1707 return (-1);
1708 }
1709 if ((ret = pfctl_get_syncookies(dev, &cookies)) != 0) {
1710 pfctl_free_status(status);
1711 warnc(ret, "DIOCGETSYNCOOKIES");
1712 return (-1);
1713 }
1714 if (opts & PF_OPT_SHOWALL)
1715 pfctl_print_title("INFO:");
1716 print_status(status, &cookies, opts);
1717 pfctl_free_status(status);
1718 return (0);
1719 }
1720
1721 int
pfctl_show_running(int dev)1722 pfctl_show_running(int dev)
1723 {
1724 struct pfctl_status *status;
1725 int running;
1726
1727 if ((status = pfctl_get_status_h(pfh)) == NULL) {
1728 warn("DIOCGETSTATUS");
1729 return (-1);
1730 }
1731
1732 running = status->running;
1733
1734 print_running(status);
1735 pfctl_free_status(status);
1736 return (!running);
1737 }
1738
1739 int
pfctl_show_timeouts(int dev,int opts)1740 pfctl_show_timeouts(int dev, int opts)
1741 {
1742 uint32_t seconds;
1743 int i;
1744 int ret;
1745
1746 if (opts & PF_OPT_SHOWALL)
1747 pfctl_print_title("TIMEOUTS:");
1748 for (i = 0; pf_timeouts[i].name; i++) {
1749 if ((ret = pfctl_get_timeout(pfh, pf_timeouts[i].timeout, &seconds)) != 0)
1750 errc(1, ret, "DIOCGETTIMEOUT");
1751 printf("%-20s %10d", pf_timeouts[i].name, seconds);
1752 if (pf_timeouts[i].timeout >= PFTM_ADAPTIVE_START &&
1753 pf_timeouts[i].timeout <= PFTM_ADAPTIVE_END)
1754 printf(" states");
1755 else
1756 printf("s");
1757 printf("\n");
1758 }
1759 return (0);
1760
1761 }
1762
1763 int
pfctl_show_limits(int dev,int opts)1764 pfctl_show_limits(int dev, int opts)
1765 {
1766 unsigned int limit;
1767 int i;
1768 int ret;
1769
1770 if (opts & PF_OPT_SHOWALL)
1771 pfctl_print_title("LIMITS:");
1772 for (i = 0; pf_limits[i].name; i++) {
1773 if ((ret = pfctl_get_limit(pfh, pf_limits[i].index, &limit)) != 0)
1774 errc(1, ret, "DIOCGETLIMIT");
1775 printf("%-13s ", pf_limits[i].name);
1776 if (limit == UINT_MAX)
1777 printf("unlimited\n");
1778 else
1779 printf("hard limit %8u\n", limit);
1780 }
1781 return (0);
1782 }
1783
1784 void
pfctl_show_creators(int opts)1785 pfctl_show_creators(int opts)
1786 {
1787 int ret;
1788 uint32_t creators[16];
1789 size_t count = nitems(creators);
1790
1791 ret = pfctl_get_creatorids(pfh, creators, &count);
1792 if (ret != 0)
1793 errx(ret, "Failed to retrieve creators");
1794
1795 printf("Creator IDs:\n");
1796 for (size_t i = 0; i < count; i++)
1797 printf("%08x\n", creators[i]);
1798 }
1799
1800 /* callbacks for rule/nat/rdr/addr */
1801 int
pfctl_add_pool(struct pfctl * pf,struct pfctl_pool * p,sa_family_t af,int which)1802 pfctl_add_pool(struct pfctl *pf, struct pfctl_pool *p, sa_family_t af, int which)
1803 {
1804 struct pf_pooladdr *pa;
1805 int ret;
1806
1807 pf->paddr.af = af;
1808 TAILQ_FOREACH(pa, &p->list, entries) {
1809 memcpy(&pf->paddr.addr, pa, sizeof(struct pf_pooladdr));
1810 if ((pf->opts & PF_OPT_NOACTION) == 0) {
1811 if ((ret = pfctl_add_addr(pf->h, &pf->paddr, which)) != 0)
1812 errc(1, ret, "DIOCADDADDR");
1813 }
1814 }
1815 return (0);
1816 }
1817
1818 void
pfctl_init_rule(struct pfctl_rule * r)1819 pfctl_init_rule(struct pfctl_rule *r)
1820 {
1821 memset(r, 0, sizeof(struct pfctl_rule));
1822 TAILQ_INIT(&(r->rdr.list));
1823 TAILQ_INIT(&(r->nat.list));
1824 TAILQ_INIT(&(r->route.list));
1825 }
1826
1827 int
pfctl_append_rule(struct pfctl * pf,struct pfctl_rule * r,const char * anchor_call)1828 pfctl_append_rule(struct pfctl *pf, struct pfctl_rule *r,
1829 const char *anchor_call)
1830 {
1831 u_int8_t rs_num;
1832 struct pfctl_rule *rule;
1833 struct pfctl_ruleset *rs;
1834 char *p;
1835
1836 rs_num = pf_get_ruleset_number(r->action);
1837 if (rs_num == PF_RULESET_MAX)
1838 errx(1, "Invalid rule type %d", r->action);
1839
1840 rs = &pf->anchor->ruleset;
1841
1842 if (anchor_call[0] && r->anchor == NULL) {
1843 /*
1844 * Don't make non-brace anchors part of the main anchor pool.
1845 */
1846 if ((r->anchor = calloc(1, sizeof(*r->anchor))) == NULL)
1847 err(1, "pfctl_append_rule: calloc");
1848
1849 pf_init_ruleset(&r->anchor->ruleset);
1850 r->anchor->ruleset.anchor = r->anchor;
1851 if (strlcpy(r->anchor->path, anchor_call,
1852 sizeof(rule->anchor->path)) >= sizeof(rule->anchor->path))
1853 errx(1, "pfctl_append_rule: strlcpy");
1854 if ((p = strrchr(anchor_call, '/')) != NULL) {
1855 if (!strlen(p))
1856 err(1, "pfctl_append_rule: bad anchor name %s",
1857 anchor_call);
1858 } else
1859 p = (char *)anchor_call;
1860 if (strlcpy(r->anchor->name, p,
1861 sizeof(rule->anchor->name)) >= sizeof(rule->anchor->name))
1862 errx(1, "pfctl_append_rule: strlcpy");
1863 }
1864
1865 if ((rule = calloc(1, sizeof(*rule))) == NULL)
1866 err(1, "calloc");
1867 bcopy(r, rule, sizeof(*rule));
1868 TAILQ_INIT(&rule->rdr.list);
1869 pfctl_move_pool(&r->rdr, &rule->rdr);
1870 TAILQ_INIT(&rule->nat.list);
1871 pfctl_move_pool(&r->nat, &rule->nat);
1872 TAILQ_INIT(&rule->route.list);
1873 pfctl_move_pool(&r->route, &rule->route);
1874
1875 TAILQ_INSERT_TAIL(rs->rules[rs_num].active.ptr, rule, entries);
1876 return (0);
1877 }
1878
1879 int
pfctl_append_eth_rule(struct pfctl * pf,struct pfctl_eth_rule * r,const char * anchor_call)1880 pfctl_append_eth_rule(struct pfctl *pf, struct pfctl_eth_rule *r,
1881 const char *anchor_call)
1882 {
1883 struct pfctl_eth_rule *rule;
1884 struct pfctl_eth_ruleset *rs;
1885 char *p;
1886
1887 rs = &pf->eanchor->ruleset;
1888
1889 if (anchor_call[0] && r->anchor == NULL) {
1890 /*
1891 * Don't make non-brace anchors part of the main anchor pool.
1892 */
1893 if ((r->anchor = calloc(1, sizeof(*r->anchor))) == NULL)
1894 err(1, "pfctl_append_rule: calloc");
1895
1896 pf_init_eth_ruleset(&r->anchor->ruleset);
1897 r->anchor->ruleset.anchor = r->anchor;
1898 if (strlcpy(r->anchor->path, anchor_call,
1899 sizeof(rule->anchor->path)) >= sizeof(rule->anchor->path))
1900 errx(1, "pfctl_append_rule: strlcpy");
1901 if ((p = strrchr(anchor_call, '/')) != NULL) {
1902 if (!strlen(p))
1903 err(1, "pfctl_append_eth_rule: bad anchor name %s",
1904 anchor_call);
1905 } else
1906 p = (char *)anchor_call;
1907 if (strlcpy(r->anchor->name, p,
1908 sizeof(rule->anchor->name)) >= sizeof(rule->anchor->name))
1909 errx(1, "pfctl_append_eth_rule: strlcpy");
1910 }
1911
1912 if ((rule = calloc(1, sizeof(*rule))) == NULL)
1913 err(1, "calloc");
1914 bcopy(r, rule, sizeof(*rule));
1915
1916 TAILQ_INSERT_TAIL(&rs->rules, rule, entries);
1917 return (0);
1918 }
1919
1920 int
pfctl_eth_ruleset_trans(struct pfctl * pf,char * path,struct pfctl_eth_anchor * a)1921 pfctl_eth_ruleset_trans(struct pfctl *pf, char *path,
1922 struct pfctl_eth_anchor *a)
1923 {
1924 int osize = pf->trans->pfrb_size;
1925
1926 if ((pf->loadopt & PFCTL_FLAG_ETH) != 0) {
1927 if (pfctl_add_trans(pf->trans, PF_RULESET_ETH, path))
1928 return (1);
1929 }
1930 if (pfctl_trans(pf->dev, pf->trans, DIOCXBEGIN, osize))
1931 return (5);
1932
1933 return (0);
1934 }
1935
1936 int
pfctl_ruleset_trans(struct pfctl * pf,char * path,struct pfctl_anchor * a,bool do_eth)1937 pfctl_ruleset_trans(struct pfctl *pf, char *path, struct pfctl_anchor *a, bool do_eth)
1938 {
1939 int osize = pf->trans->pfrb_size;
1940
1941 if ((pf->loadopt & PFCTL_FLAG_ETH) != 0 && do_eth) {
1942 if (pfctl_add_trans(pf->trans, PF_RULESET_ETH, path))
1943 return (1);
1944 }
1945 if ((pf->loadopt & PFCTL_FLAG_NAT) != 0) {
1946 if (pfctl_add_trans(pf->trans, PF_RULESET_NAT, path) ||
1947 pfctl_add_trans(pf->trans, PF_RULESET_BINAT, path) ||
1948 pfctl_add_trans(pf->trans, PF_RULESET_RDR, path))
1949 return (1);
1950 }
1951 if (a == pf->astack[0] && ((altqsupport &&
1952 (pf->loadopt & PFCTL_FLAG_ALTQ) != 0))) {
1953 if (pfctl_add_trans(pf->trans, PF_RULESET_ALTQ, path))
1954 return (2);
1955 }
1956 if ((pf->loadopt & PFCTL_FLAG_FILTER) != 0) {
1957 if (pfctl_add_trans(pf->trans, PF_RULESET_SCRUB, path) ||
1958 pfctl_add_trans(pf->trans, PF_RULESET_FILTER, path))
1959 return (3);
1960 }
1961 if (pf->loadopt & PFCTL_FLAG_TABLE)
1962 if (pfctl_add_trans(pf->trans, PF_RULESET_TABLE, path))
1963 return (4);
1964 if (pfctl_trans(pf->dev, pf->trans, DIOCXBEGIN, osize))
1965 return (5);
1966
1967 return (0);
1968 }
1969
1970 int
pfctl_load_eth_ruleset(struct pfctl * pf,char * path,struct pfctl_eth_ruleset * rs,int depth)1971 pfctl_load_eth_ruleset(struct pfctl *pf, char *path,
1972 struct pfctl_eth_ruleset *rs, int depth)
1973 {
1974 struct pfctl_eth_rule *r;
1975 int error, len = strlen(path);
1976 int brace = 0;
1977
1978 pf->eanchor = rs->anchor;
1979 if (path[0])
1980 snprintf(&path[len], MAXPATHLEN - len, "/%s", pf->eanchor->name);
1981 else
1982 snprintf(&path[len], MAXPATHLEN - len, "%s", pf->eanchor->name);
1983
1984 if (depth) {
1985 if (TAILQ_FIRST(&rs->rules) != NULL) {
1986 brace++;
1987 if (pf->opts & PF_OPT_VERBOSE)
1988 printf(" {\n");
1989 if ((pf->opts & PF_OPT_NOACTION) == 0 &&
1990 (error = pfctl_eth_ruleset_trans(pf,
1991 path, rs->anchor))) {
1992 printf("pfctl_load_eth_rulesets: "
1993 "pfctl_eth_ruleset_trans %d\n", error);
1994 goto error;
1995 }
1996 } else if (pf->opts & PF_OPT_VERBOSE)
1997 printf("\n");
1998 }
1999
2000 while ((r = TAILQ_FIRST(&rs->rules)) != NULL) {
2001 TAILQ_REMOVE(&rs->rules, r, entries);
2002
2003 error = pfctl_load_eth_rule(pf, path, r, depth);
2004 if (error)
2005 return (error);
2006
2007 if (r->anchor) {
2008 if ((error = pfctl_load_eth_ruleset(pf, path,
2009 &r->anchor->ruleset, depth + 1)))
2010 return (error);
2011 } else if (pf->opts & PF_OPT_VERBOSE)
2012 printf("\n");
2013 free(r);
2014 }
2015 if (brace && pf->opts & PF_OPT_VERBOSE) {
2016 INDENT(depth - 1, (pf->opts & PF_OPT_VERBOSE));
2017 printf("}\n");
2018 }
2019 path[len] = '\0';
2020
2021 return (0);
2022 error:
2023 path[len] = '\0';
2024 return (error);
2025 }
2026
2027 int
pfctl_load_eth_rule(struct pfctl * pf,char * path,struct pfctl_eth_rule * r,int depth)2028 pfctl_load_eth_rule(struct pfctl *pf, char *path, struct pfctl_eth_rule *r,
2029 int depth)
2030 {
2031 char *name;
2032 char anchor[PF_ANCHOR_NAME_SIZE];
2033 int len = strlen(path);
2034 int ret;
2035
2036 if (strlcpy(anchor, path, sizeof(anchor)) >= sizeof(anchor))
2037 errx(1, "pfctl_load_eth_rule: strlcpy");
2038
2039 if (r->anchor) {
2040 if (r->anchor->match) {
2041 if (path[0])
2042 snprintf(&path[len], MAXPATHLEN - len,
2043 "/%s", r->anchor->name);
2044 else
2045 snprintf(&path[len], MAXPATHLEN - len,
2046 "%s", r->anchor->name);
2047 name = r->anchor->name;
2048 } else
2049 name = r->anchor->path;
2050 } else
2051 name = "";
2052
2053 if ((pf->opts & PF_OPT_NOACTION) == 0)
2054 if ((ret = pfctl_add_eth_rule(pf->dev, r, anchor, name,
2055 pf->eth_ticket)) != 0)
2056 errc(1, ret, "DIOCADDETHRULENV");
2057
2058 if (pf->opts & PF_OPT_VERBOSE) {
2059 INDENT(depth, !(pf->opts & PF_OPT_VERBOSE2));
2060 print_eth_rule(r, r->anchor ? r->anchor->name : "",
2061 pf->opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG));
2062 }
2063
2064 path[len] = '\0';
2065
2066 return (0);
2067 }
2068
2069 int
pfctl_load_ruleset(struct pfctl * pf,char * path,struct pfctl_ruleset * rs,int rs_num,int depth)2070 pfctl_load_ruleset(struct pfctl *pf, char *path, struct pfctl_ruleset *rs,
2071 int rs_num, int depth)
2072 {
2073 struct pfctl_rule *r;
2074 int error, len = strlen(path);
2075 int brace = 0;
2076
2077 pf->anchor = rs->anchor;
2078
2079 if (path[0])
2080 snprintf(&path[len], MAXPATHLEN - len, "/%s", pf->anchor->name);
2081 else
2082 snprintf(&path[len], MAXPATHLEN - len, "%s", pf->anchor->name);
2083
2084 if (depth) {
2085 if (TAILQ_FIRST(rs->rules[rs_num].active.ptr) != NULL) {
2086 brace++;
2087 if (pf->opts & PF_OPT_VERBOSE)
2088 printf(" {\n");
2089 if ((pf->opts & PF_OPT_NOACTION) == 0 &&
2090 (error = pfctl_ruleset_trans(pf,
2091 path, rs->anchor, false))) {
2092 printf("%s: "
2093 "pfctl_ruleset_trans %d\n", __func__, error);
2094 goto error;
2095 }
2096 } else if (pf->opts & PF_OPT_VERBOSE)
2097 printf("\n");
2098 }
2099
2100 if (pf->optimize && rs_num == PF_RULESET_FILTER)
2101 pfctl_optimize_ruleset(pf, rs);
2102
2103 while ((r = TAILQ_FIRST(rs->rules[rs_num].active.ptr)) != NULL) {
2104 TAILQ_REMOVE(rs->rules[rs_num].active.ptr, r, entries);
2105
2106 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++)
2107 expand_label(r->label[i], PF_RULE_LABEL_SIZE, r);
2108 expand_label(r->tagname, PF_TAG_NAME_SIZE, r);
2109 expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r);
2110
2111 if ((error = pfctl_load_rule(pf, path, r, depth)))
2112 goto error;
2113 if (r->anchor) {
2114 if ((error = pfctl_load_ruleset(pf, path,
2115 &r->anchor->ruleset, rs_num, depth + 1)))
2116 goto error;
2117 } else if (pf->opts & PF_OPT_VERBOSE)
2118 printf("\n");
2119 free(r);
2120 }
2121 if (brace && pf->opts & PF_OPT_VERBOSE) {
2122 INDENT(depth - 1, (pf->opts & PF_OPT_VERBOSE));
2123 printf("}\n");
2124 }
2125 path[len] = '\0';
2126 return (0);
2127
2128 error:
2129 path[len] = '\0';
2130 return (error);
2131
2132 }
2133
2134 int
pfctl_load_rule(struct pfctl * pf,char * path,struct pfctl_rule * r,int depth)2135 pfctl_load_rule(struct pfctl *pf, char *path, struct pfctl_rule *r, int depth)
2136 {
2137 u_int8_t rs_num = pf_get_ruleset_number(r->action);
2138 char *name;
2139 u_int32_t ticket;
2140 char anchor[PF_ANCHOR_NAME_SIZE];
2141 int len = strlen(path);
2142 int error;
2143 bool was_present;
2144
2145 /* set up anchor before adding to path for anchor_call */
2146 if ((pf->opts & PF_OPT_NOACTION) == 0)
2147 ticket = pfctl_get_ticket(pf->trans, rs_num, path);
2148 if (strlcpy(anchor, path, sizeof(anchor)) >= sizeof(anchor))
2149 errx(1, "pfctl_load_rule: strlcpy");
2150
2151 if (r->anchor) {
2152 if (r->anchor->match) {
2153 if (path[0])
2154 snprintf(&path[len], MAXPATHLEN - len,
2155 "/%s", r->anchor->name);
2156 else
2157 snprintf(&path[len], MAXPATHLEN - len,
2158 "%s", r->anchor->name);
2159 name = r->anchor->name;
2160 } else
2161 name = r->anchor->path;
2162 } else
2163 name = "";
2164
2165 was_present = false;
2166 if ((pf->opts & PF_OPT_NOACTION) == 0) {
2167 if ((pf->opts & PF_OPT_NOACTION) == 0) {
2168 if ((error = pfctl_begin_addrs(pf->h,
2169 &pf->paddr.ticket)) != 0)
2170 errc(1, error, "DIOCBEGINADDRS");
2171 }
2172
2173 if (pfctl_add_pool(pf, &r->rdr, r->af, PF_RDR))
2174 return (1);
2175 if (pfctl_add_pool(pf, &r->nat, r->naf ? r->naf : r->af, PF_NAT))
2176 return (1);
2177 if (pfctl_add_pool(pf, &r->route, r->af, PF_RT))
2178 return (1);
2179 error = pfctl_add_rule_h(pf->h, r, anchor, name, ticket,
2180 pf->paddr.ticket);
2181 switch (error) {
2182 case 0:
2183 /* things worked, do nothing */
2184 break;
2185 case EEXIST:
2186 /* an identical rule is already present */
2187 was_present = true;
2188 break;
2189 default:
2190 errc(1, error, "DIOCADDRULE");
2191 }
2192 }
2193
2194 if (pf->opts & PF_OPT_VERBOSE) {
2195 INDENT(depth, !(pf->opts & PF_OPT_VERBOSE2));
2196 print_rule(r, name,
2197 pf->opts & PF_OPT_VERBOSE2,
2198 pf->opts & PF_OPT_NUMERIC);
2199 if (was_present)
2200 printf(" -- rule was already present");
2201 }
2202 path[len] = '\0';
2203 pfctl_clear_pool(&r->rdr);
2204 pfctl_clear_pool(&r->nat);
2205 return (0);
2206 }
2207
2208 int
pfctl_add_altq(struct pfctl * pf,struct pf_altq * a)2209 pfctl_add_altq(struct pfctl *pf, struct pf_altq *a)
2210 {
2211 if (altqsupport &&
2212 (loadopt & PFCTL_FLAG_ALTQ) != 0) {
2213 memcpy(&pf->paltq->altq, a, sizeof(struct pf_altq));
2214 if ((pf->opts & PF_OPT_NOACTION) == 0) {
2215 if (ioctl(pf->dev, DIOCADDALTQ, pf->paltq)) {
2216 if (errno == ENXIO)
2217 errx(1, "qtype not configured");
2218 else if (errno == ENODEV)
2219 errx(1, "%s: driver does not support "
2220 "altq", a->ifname);
2221 else
2222 err(1, "DIOCADDALTQ");
2223 }
2224 }
2225 pfaltq_store(&pf->paltq->altq);
2226 }
2227 return (0);
2228 }
2229
2230 int
pfctl_rules(int dev,char * filename,int opts,int optimize,char * anchorname,struct pfr_buffer * trans)2231 pfctl_rules(int dev, char *filename, int opts, int optimize,
2232 char *anchorname, struct pfr_buffer *trans)
2233 {
2234 #define ERR(...) do { warn(__VA_ARGS__); goto _error; } while(0)
2235 #define ERRX(...) do { warnx(__VA_ARGS__); goto _error; } while(0)
2236
2237 struct pfr_buffer *t, buf;
2238 struct pfioc_altq pa;
2239 struct pfctl pf;
2240 struct pfctl_ruleset *rs;
2241 struct pfctl_eth_ruleset *ethrs;
2242 struct pfr_table trs;
2243 char *path = NULL;
2244 int osize;
2245
2246 RB_INIT(&pf_anchors);
2247 memset(&pf_main_anchor, 0, sizeof(pf_main_anchor));
2248 pf_init_ruleset(&pf_main_anchor.ruleset);
2249 pf_main_anchor.ruleset.anchor = &pf_main_anchor;
2250
2251 memset(&pf_eth_main_anchor, 0, sizeof(pf_eth_main_anchor));
2252 pf_init_eth_ruleset(&pf_eth_main_anchor.ruleset);
2253 pf_eth_main_anchor.ruleset.anchor = &pf_eth_main_anchor;
2254
2255 if (trans == NULL) {
2256 bzero(&buf, sizeof(buf));
2257 buf.pfrb_type = PFRB_TRANS;
2258 t = &buf;
2259 osize = 0;
2260 } else {
2261 t = trans;
2262 osize = t->pfrb_size;
2263 }
2264
2265 memset(&pa, 0, sizeof(pa));
2266 pa.version = PFIOC_ALTQ_VERSION;
2267 memset(&pf, 0, sizeof(pf));
2268 memset(&trs, 0, sizeof(trs));
2269 if ((path = calloc(1, MAXPATHLEN)) == NULL)
2270 ERRX("%s: calloc", __func__);
2271 if (strlcpy(trs.pfrt_anchor, anchorname,
2272 sizeof(trs.pfrt_anchor)) >= sizeof(trs.pfrt_anchor))
2273 ERRX("%s: strlcpy", __func__);
2274 pf.dev = dev;
2275 pf.h = pfh;
2276 pf.opts = opts;
2277 pf.optimize = optimize;
2278 pf.loadopt = loadopt;
2279
2280 /* non-brace anchor, create without resolving the path */
2281 if ((pf.anchor = calloc(1, sizeof(*pf.anchor))) == NULL)
2282 ERRX("%s: calloc", __func__);
2283 rs = &pf.anchor->ruleset;
2284 pf_init_ruleset(rs);
2285 rs->anchor = pf.anchor;
2286 if (strlcpy(pf.anchor->path, anchorname,
2287 sizeof(pf.anchor->path)) >= sizeof(pf.anchor->path))
2288 errx(1, "%s: strlcpy", __func__);
2289 if (strlcpy(pf.anchor->name, anchorname,
2290 sizeof(pf.anchor->name)) >= sizeof(pf.anchor->name))
2291 errx(1, "%s: strlcpy", __func__);
2292
2293
2294 pf.astack[0] = pf.anchor;
2295 pf.asd = 0;
2296 if (anchorname[0])
2297 pf.loadopt &= ~PFCTL_FLAG_ALTQ;
2298 pf.paltq = &pa;
2299 pf.trans = t;
2300 pfctl_init_options(&pf);
2301
2302 /* Set up ethernet anchor */
2303 if ((pf.eanchor = calloc(1, sizeof(*pf.eanchor))) == NULL)
2304 ERRX("%s: calloc", __func__);
2305
2306 if (strlcpy(pf.eanchor->path, anchorname,
2307 sizeof(pf.eanchor->path)) >= sizeof(pf.eanchor->path))
2308 errx(1, "%s: strlcpy", __func__);
2309 if (strlcpy(pf.eanchor->name, anchorname,
2310 sizeof(pf.eanchor->name)) >= sizeof(pf.eanchor->name))
2311 errx(1, "%s: strlcpy", __func__);
2312
2313 ethrs = &pf.eanchor->ruleset;
2314 pf_init_eth_ruleset(ethrs);
2315 ethrs->anchor = pf.eanchor;
2316 pf.eastack[0] = pf.eanchor;
2317
2318 if ((opts & PF_OPT_NOACTION) == 0) {
2319 /*
2320 * XXX For the time being we need to open transactions for
2321 * the main ruleset before parsing, because tables are still
2322 * loaded at parse time.
2323 */
2324 if (pfctl_ruleset_trans(&pf, anchorname, pf.anchor, true))
2325 ERRX("%s", __func__);
2326 if (pf.loadopt & PFCTL_FLAG_ETH)
2327 pf.eth_ticket = pfctl_get_ticket(t, PF_RULESET_ETH, anchorname);
2328 if (altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ))
2329 pa.ticket =
2330 pfctl_get_ticket(t, PF_RULESET_ALTQ, anchorname);
2331 if (pf.loadopt & PFCTL_FLAG_TABLE)
2332 pf.astack[0]->ruleset.tticket =
2333 pfctl_get_ticket(t, PF_RULESET_TABLE, anchorname);
2334 }
2335
2336 if (parse_config(filename, &pf) < 0) {
2337 if ((opts & PF_OPT_NOACTION) == 0)
2338 ERRX("Syntax error in config file: "
2339 "pf rules not loaded");
2340 else
2341 goto _error;
2342 }
2343 if (loadopt & PFCTL_FLAG_OPTION)
2344 pfctl_adjust_skip_ifaces(&pf);
2345
2346 if ((pf.loadopt & PFCTL_FLAG_FILTER &&
2347 (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_SCRUB, 0))) ||
2348 (pf.loadopt & PFCTL_FLAG_ETH &&
2349 (pfctl_load_eth_ruleset(&pf, path, ethrs, 0))) ||
2350 (pf.loadopt & PFCTL_FLAG_NAT &&
2351 (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_NAT, 0) ||
2352 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_RDR, 0) ||
2353 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_BINAT, 0))) ||
2354 (pf.loadopt & PFCTL_FLAG_FILTER &&
2355 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_FILTER, 0))) {
2356 if ((opts & PF_OPT_NOACTION) == 0)
2357 ERRX("Unable to load rules into kernel");
2358 else
2359 goto _error;
2360 }
2361
2362 if ((altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ) != 0))
2363 if (check_commit_altq(dev, opts) != 0)
2364 ERRX("errors in altq config");
2365
2366 if (trans == NULL) {
2367 /* process "load anchor" directives */
2368 if (pfctl_load_anchors(dev, &pf, t) == -1)
2369 ERRX("load anchors");
2370
2371 if ((opts & PF_OPT_NOACTION) == 0) {
2372 if (!anchorname[0] && pfctl_load_options(&pf))
2373 goto _error;
2374 if (pfctl_trans(dev, t, DIOCXCOMMIT, osize))
2375 ERR("DIOCXCOMMIT");
2376 }
2377 }
2378 free(path);
2379 return (0);
2380
2381 _error:
2382 if (trans == NULL) { /* main ruleset */
2383 if ((opts & PF_OPT_NOACTION) == 0)
2384 if (pfctl_trans(dev, t, DIOCXROLLBACK, osize))
2385 err(1, "DIOCXROLLBACK");
2386 exit(1);
2387 } else { /* sub ruleset */
2388 free(path);
2389 return (-1);
2390 }
2391
2392 #undef ERR
2393 #undef ERRX
2394 }
2395
2396 FILE *
pfctl_fopen(const char * name,const char * mode)2397 pfctl_fopen(const char *name, const char *mode)
2398 {
2399 struct stat st;
2400 FILE *fp;
2401
2402 fp = fopen(name, mode);
2403 if (fp == NULL)
2404 return (NULL);
2405 if (fstat(fileno(fp), &st)) {
2406 fclose(fp);
2407 return (NULL);
2408 }
2409 if (S_ISDIR(st.st_mode)) {
2410 fclose(fp);
2411 errno = EISDIR;
2412 return (NULL);
2413 }
2414 return (fp);
2415 }
2416
2417 void
pfctl_init_options(struct pfctl * pf)2418 pfctl_init_options(struct pfctl *pf)
2419 {
2420
2421 pf->timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL;
2422 pf->timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL;
2423 pf->timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL;
2424 pf->timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL;
2425 pf->timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL;
2426 pf->timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL;
2427 pf->timeout[PFTM_SCTP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL;
2428 pf->timeout[PFTM_SCTP_OPENING] = PFTM_TCP_OPENING_VAL;
2429 pf->timeout[PFTM_SCTP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL;
2430 pf->timeout[PFTM_SCTP_CLOSING] = PFTM_TCP_CLOSING_VAL;
2431 pf->timeout[PFTM_SCTP_CLOSED] = PFTM_TCP_CLOSED_VAL;
2432 pf->timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL;
2433 pf->timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL;
2434 pf->timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL;
2435 pf->timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL;
2436 pf->timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL;
2437 pf->timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL;
2438 pf->timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL;
2439 pf->timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL;
2440 pf->timeout[PFTM_FRAG] = PFTM_FRAG_VAL;
2441 pf->timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL;
2442 pf->timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL;
2443 pf->timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL;
2444 pf->timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START;
2445 pf->timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END;
2446
2447 pf->limit[PF_LIMIT_STATES] = PFSTATE_HIWAT;
2448 pf->limit[PF_LIMIT_FRAGS] = PFFRAG_FRENT_HIWAT;
2449 pf->limit[PF_LIMIT_SRC_NODES] = PFSNODE_HIWAT;
2450 pf->limit[PF_LIMIT_TABLE_ENTRIES] = PFR_KENTRY_HIWAT;
2451
2452 pf->debug = PF_DEBUG_URGENT;
2453 pf->reassemble = 0;
2454
2455 pf->syncookies = false;
2456 pf->syncookieswat[0] = PF_SYNCOOKIES_LOWATPCT;
2457 pf->syncookieswat[1] = PF_SYNCOOKIES_HIWATPCT;
2458 }
2459
2460 int
pfctl_load_options(struct pfctl * pf)2461 pfctl_load_options(struct pfctl *pf)
2462 {
2463 int i, error = 0;
2464
2465 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2466 return (0);
2467
2468 /* load limits */
2469 for (i = 0; i < PF_LIMIT_MAX; i++) {
2470 if ((pf->opts & PF_OPT_MERGE) && !pf->limit_set[i])
2471 continue;
2472 if (pfctl_load_limit(pf, i, pf->limit[i]))
2473 error = 1;
2474 }
2475
2476 /*
2477 * If we've set the states limit, but haven't explicitly set adaptive
2478 * timeouts, do it now with a start of 60% and end of 120%.
2479 */
2480 if (pf->limit_set[PF_LIMIT_STATES] &&
2481 !pf->timeout_set[PFTM_ADAPTIVE_START] &&
2482 !pf->timeout_set[PFTM_ADAPTIVE_END]) {
2483 pf->timeout[PFTM_ADAPTIVE_START] =
2484 (pf->limit[PF_LIMIT_STATES] / 10) * 6;
2485 pf->timeout_set[PFTM_ADAPTIVE_START] = 1;
2486 pf->timeout[PFTM_ADAPTIVE_END] =
2487 (pf->limit[PF_LIMIT_STATES] / 10) * 12;
2488 pf->timeout_set[PFTM_ADAPTIVE_END] = 1;
2489 }
2490
2491 /* load timeouts */
2492 for (i = 0; i < PFTM_MAX; i++) {
2493 if ((pf->opts & PF_OPT_MERGE) && !pf->timeout_set[i])
2494 continue;
2495 if (pfctl_load_timeout(pf, i, pf->timeout[i]))
2496 error = 1;
2497 }
2498
2499 /* load debug */
2500 if (!(pf->opts & PF_OPT_MERGE) || pf->debug_set)
2501 if (pfctl_load_debug(pf, pf->debug))
2502 error = 1;
2503
2504 /* load logif */
2505 if (!(pf->opts & PF_OPT_MERGE) || pf->ifname_set)
2506 if (pfctl_load_logif(pf, pf->ifname))
2507 error = 1;
2508
2509 /* load hostid */
2510 if (!(pf->opts & PF_OPT_MERGE) || pf->hostid_set)
2511 if (pfctl_load_hostid(pf, pf->hostid))
2512 error = 1;
2513
2514 /* load reassembly settings */
2515 if (!(pf->opts & PF_OPT_MERGE) || pf->reass_set)
2516 if (pfctl_load_reassembly(pf, pf->reassemble))
2517 error = 1;
2518
2519 /* load keepcounters */
2520 if (pfctl_set_keepcounters(pf->dev, pf->keep_counters))
2521 error = 1;
2522
2523 /* load syncookies settings */
2524 if (pfctl_load_syncookies(pf, pf->syncookies))
2525 error = 1;
2526
2527 return (error);
2528 }
2529
2530 int
pfctl_apply_limit(struct pfctl * pf,const char * opt,unsigned int limit)2531 pfctl_apply_limit(struct pfctl *pf, const char *opt, unsigned int limit)
2532 {
2533 int i;
2534
2535
2536 for (i = 0; pf_limits[i].name; i++) {
2537 if (strcasecmp(opt, pf_limits[i].name) == 0) {
2538 pf->limit[pf_limits[i].index] = limit;
2539 pf->limit_set[pf_limits[i].index] = 1;
2540 break;
2541 }
2542 }
2543 if (pf_limits[i].name == NULL) {
2544 warnx("Bad pool name.");
2545 return (1);
2546 }
2547
2548 if (pf->opts & PF_OPT_VERBOSE)
2549 printf("set limit %s %d\n", opt, limit);
2550
2551 return (0);
2552 }
2553
2554 int
pfctl_load_limit(struct pfctl * pf,unsigned int index,unsigned int limit)2555 pfctl_load_limit(struct pfctl *pf, unsigned int index, unsigned int limit)
2556 {
2557 if (pfctl_set_limit(pf->h, index, limit)) {
2558 if (errno == EBUSY)
2559 warnx("Current pool size exceeds requested %s limit %u",
2560 pf_limits[index].name, limit);
2561 else
2562 warnx("Cannot set %s limit to %u",
2563 pf_limits[index].name, limit);
2564 return (1);
2565 }
2566 return (0);
2567 }
2568
2569 int
pfctl_apply_timeout(struct pfctl * pf,const char * opt,int seconds,int quiet)2570 pfctl_apply_timeout(struct pfctl *pf, const char *opt, int seconds, int quiet)
2571 {
2572 int i;
2573
2574 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2575 return (0);
2576
2577 for (i = 0; pf_timeouts[i].name; i++) {
2578 if (strcasecmp(opt, pf_timeouts[i].name) == 0) {
2579 pf->timeout[pf_timeouts[i].timeout] = seconds;
2580 pf->timeout_set[pf_timeouts[i].timeout] = 1;
2581 break;
2582 }
2583 }
2584
2585 if (pf_timeouts[i].name == NULL) {
2586 warnx("Bad timeout name.");
2587 return (1);
2588 }
2589
2590
2591 if (pf->opts & PF_OPT_VERBOSE && ! quiet)
2592 printf("set timeout %s %d\n", opt, seconds);
2593
2594 return (0);
2595 }
2596
2597 int
pfctl_load_timeout(struct pfctl * pf,unsigned int timeout,unsigned int seconds)2598 pfctl_load_timeout(struct pfctl *pf, unsigned int timeout, unsigned int seconds)
2599 {
2600 if (pfctl_set_timeout(pf->h, timeout, seconds)) {
2601 warnx("DIOCSETTIMEOUT");
2602 return (1);
2603 }
2604 return (0);
2605 }
2606
2607 int
pfctl_set_reassembly(struct pfctl * pf,int on,int nodf)2608 pfctl_set_reassembly(struct pfctl *pf, int on, int nodf)
2609 {
2610 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2611 return (0);
2612
2613 pf->reass_set = 1;
2614 if (on) {
2615 pf->reassemble = PF_REASS_ENABLED;
2616 if (nodf)
2617 pf->reassemble |= PF_REASS_NODF;
2618 } else {
2619 pf->reassemble = 0;
2620 }
2621
2622 if (pf->opts & PF_OPT_VERBOSE)
2623 printf("set reassemble %s %s\n", on ? "yes" : "no",
2624 nodf ? "no-df" : "");
2625
2626 return (0);
2627 }
2628
2629 int
pfctl_set_optimization(struct pfctl * pf,const char * opt)2630 pfctl_set_optimization(struct pfctl *pf, const char *opt)
2631 {
2632 const struct pf_hint *hint;
2633 int i, r;
2634
2635 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2636 return (0);
2637
2638 for (i = 0; pf_hints[i].name; i++)
2639 if (strcasecmp(opt, pf_hints[i].name) == 0)
2640 break;
2641
2642 hint = pf_hints[i].hint;
2643 if (hint == NULL) {
2644 warnx("invalid state timeouts optimization");
2645 return (1);
2646 }
2647
2648 for (i = 0; hint[i].name; i++)
2649 if ((r = pfctl_apply_timeout(pf, hint[i].name,
2650 hint[i].timeout, 1)))
2651 return (r);
2652
2653 if (pf->opts & PF_OPT_VERBOSE)
2654 printf("set optimization %s\n", opt);
2655
2656 return (0);
2657 }
2658
2659 int
pfctl_set_logif(struct pfctl * pf,char * ifname)2660 pfctl_set_logif(struct pfctl *pf, char *ifname)
2661 {
2662
2663 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2664 return (0);
2665
2666 if (!strcmp(ifname, "none")) {
2667 free(pf->ifname);
2668 pf->ifname = NULL;
2669 } else {
2670 pf->ifname = strdup(ifname);
2671 if (!pf->ifname)
2672 errx(1, "pfctl_set_logif: strdup");
2673 }
2674 pf->ifname_set = 1;
2675
2676 if (pf->opts & PF_OPT_VERBOSE)
2677 printf("set loginterface %s\n", ifname);
2678
2679 return (0);
2680 }
2681
2682 int
pfctl_load_logif(struct pfctl * pf,char * ifname)2683 pfctl_load_logif(struct pfctl *pf, char *ifname)
2684 {
2685 if (ifname != NULL && strlen(ifname) >= IFNAMSIZ) {
2686 warnx("pfctl_load_logif: strlcpy");
2687 return (1);
2688 }
2689 return (pfctl_set_statusif(pfh, ifname ? ifname : ""));
2690 }
2691
2692 void
pfctl_set_hostid(struct pfctl * pf,u_int32_t hostid)2693 pfctl_set_hostid(struct pfctl *pf, u_int32_t hostid)
2694 {
2695 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2696 return;
2697
2698 HTONL(hostid);
2699
2700 pf->hostid = hostid;
2701 pf->hostid_set = 1;
2702
2703 if (pf->opts & PF_OPT_VERBOSE)
2704 printf("set hostid 0x%08x\n", ntohl(hostid));
2705 }
2706
2707 int
pfctl_load_hostid(struct pfctl * pf,u_int32_t hostid)2708 pfctl_load_hostid(struct pfctl *pf, u_int32_t hostid)
2709 {
2710 if (ioctl(dev, DIOCSETHOSTID, &hostid)) {
2711 warnx("DIOCSETHOSTID");
2712 return (1);
2713 }
2714 return (0);
2715 }
2716
2717 int
pfctl_load_reassembly(struct pfctl * pf,u_int32_t reassembly)2718 pfctl_load_reassembly(struct pfctl *pf, u_int32_t reassembly)
2719 {
2720 if (ioctl(dev, DIOCSETREASS, &reassembly)) {
2721 warnx("DIOCSETREASS");
2722 return (1);
2723 }
2724 return (0);
2725 }
2726
2727 int
pfctl_load_syncookies(struct pfctl * pf,u_int8_t val)2728 pfctl_load_syncookies(struct pfctl *pf, u_int8_t val)
2729 {
2730 struct pfctl_syncookies cookies;
2731
2732 bzero(&cookies, sizeof(cookies));
2733
2734 cookies.mode = val;
2735 cookies.lowwater = pf->syncookieswat[0];
2736 cookies.highwater = pf->syncookieswat[1];
2737
2738 if (pfctl_set_syncookies(dev, &cookies)) {
2739 warnx("DIOCSETSYNCOOKIES");
2740 return (1);
2741 }
2742 return (0);
2743 }
2744
2745 int
pfctl_cfg_syncookies(struct pfctl * pf,uint8_t val,struct pfctl_watermarks * w)2746 pfctl_cfg_syncookies(struct pfctl *pf, uint8_t val, struct pfctl_watermarks *w)
2747 {
2748 if (val != PF_SYNCOOKIES_ADAPTIVE && w != NULL) {
2749 warnx("syncookies start/end only apply to adaptive");
2750 return (1);
2751 }
2752 if (val == PF_SYNCOOKIES_ADAPTIVE && w != NULL) {
2753 if (!w->hi)
2754 w->hi = PF_SYNCOOKIES_HIWATPCT;
2755 if (!w->lo)
2756 w->lo = w->hi / 2;
2757 if (w->lo >= w->hi) {
2758 warnx("start must be higher than end");
2759 return (1);
2760 }
2761 pf->syncookieswat[0] = w->lo;
2762 pf->syncookieswat[1] = w->hi;
2763 pf->syncookieswat_set = 1;
2764 }
2765
2766 if (pf->opts & PF_OPT_VERBOSE) {
2767 if (val == PF_SYNCOOKIES_NEVER)
2768 printf("set syncookies never\n");
2769 else if (val == PF_SYNCOOKIES_ALWAYS)
2770 printf("set syncookies always\n");
2771 else if (val == PF_SYNCOOKIES_ADAPTIVE) {
2772 if (pf->syncookieswat_set)
2773 printf("set syncookies adaptive (start %u%%, "
2774 "end %u%%)\n", pf->syncookieswat[1],
2775 pf->syncookieswat[0]);
2776 else
2777 printf("set syncookies adaptive\n");
2778 } else { /* cannot happen */
2779 warnx("king bula ate all syncookies");
2780 return (1);
2781 }
2782 }
2783
2784 pf->syncookies = val;
2785 return (0);
2786 }
2787
2788 int
pfctl_do_set_debug(struct pfctl * pf,char * d)2789 pfctl_do_set_debug(struct pfctl *pf, char *d)
2790 {
2791 u_int32_t level;
2792 int ret;
2793
2794 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2795 return (0);
2796
2797 if (!strcmp(d, "none"))
2798 pf->debug = PF_DEBUG_NONE;
2799 else if (!strcmp(d, "urgent"))
2800 pf->debug = PF_DEBUG_URGENT;
2801 else if (!strcmp(d, "misc"))
2802 pf->debug = PF_DEBUG_MISC;
2803 else if (!strcmp(d, "loud"))
2804 pf->debug = PF_DEBUG_NOISY;
2805 else {
2806 warnx("unknown debug level \"%s\"", d);
2807 return (-1);
2808 }
2809
2810 pf->debug_set = 1;
2811 level = pf->debug;
2812
2813 if ((pf->opts & PF_OPT_NOACTION) == 0)
2814 if ((ret = pfctl_set_debug(pfh, level)) != 0)
2815 errc(1, ret, "DIOCSETDEBUG");
2816
2817 if (pf->opts & PF_OPT_VERBOSE)
2818 printf("set debug %s\n", d);
2819
2820 return (0);
2821 }
2822
2823 int
pfctl_load_debug(struct pfctl * pf,unsigned int level)2824 pfctl_load_debug(struct pfctl *pf, unsigned int level)
2825 {
2826 if (pfctl_set_debug(pf->h, level)) {
2827 warnx("DIOCSETDEBUG");
2828 return (1);
2829 }
2830 return (0);
2831 }
2832
2833 int
pfctl_set_interface_flags(struct pfctl * pf,char * ifname,int flags,int how)2834 pfctl_set_interface_flags(struct pfctl *pf, char *ifname, int flags, int how)
2835 {
2836 struct pfioc_iface pi;
2837 struct node_host *h = NULL, *n = NULL;
2838
2839 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2840 return (0);
2841
2842 bzero(&pi, sizeof(pi));
2843
2844 pi.pfiio_flags = flags;
2845
2846 /* Make sure our cache matches the kernel. If we set or clear the flag
2847 * for a group this applies to all members. */
2848 h = ifa_grouplookup(ifname, 0);
2849 for (n = h; n != NULL; n = n->next)
2850 pfctl_set_interface_flags(pf, n->ifname, flags, how);
2851
2852 if (strlcpy(pi.pfiio_name, ifname, sizeof(pi.pfiio_name)) >=
2853 sizeof(pi.pfiio_name))
2854 errx(1, "pfctl_set_interface_flags: strlcpy");
2855
2856 if ((pf->opts & PF_OPT_NOACTION) == 0) {
2857 if (how == 0) {
2858 if (ioctl(pf->dev, DIOCCLRIFFLAG, &pi))
2859 pfctl_err(pf->opts, 1, "DIOCCLRIFFLAG");
2860 } else {
2861 if (ioctl(pf->dev, DIOCSETIFFLAG, &pi))
2862 err(1, "DIOCSETIFFLAG");
2863 pfctl_check_skip_ifaces(ifname);
2864 }
2865 }
2866 return (0);
2867 }
2868
2869 void
pfctl_debug(int dev,u_int32_t level,int opts)2870 pfctl_debug(int dev, u_int32_t level, int opts)
2871 {
2872 int ret;
2873
2874 if ((ret = pfctl_set_debug(pfh, level)) != 0)
2875 errc(1, ret, "DIOCSETDEBUG");
2876 if ((opts & PF_OPT_QUIET) == 0) {
2877 fprintf(stderr, "debug level set to '");
2878 switch (level) {
2879 case PF_DEBUG_NONE:
2880 fprintf(stderr, "none");
2881 break;
2882 case PF_DEBUG_URGENT:
2883 fprintf(stderr, "urgent");
2884 break;
2885 case PF_DEBUG_MISC:
2886 fprintf(stderr, "misc");
2887 break;
2888 case PF_DEBUG_NOISY:
2889 fprintf(stderr, "loud");
2890 break;
2891 default:
2892 fprintf(stderr, "<invalid>");
2893 break;
2894 }
2895 fprintf(stderr, "'\n");
2896 }
2897 }
2898
2899 int
pfctl_test_altqsupport(int dev,int opts)2900 pfctl_test_altqsupport(int dev, int opts)
2901 {
2902 struct pfioc_altq pa;
2903
2904 pa.version = PFIOC_ALTQ_VERSION;
2905 if (ioctl(dev, DIOCGETALTQS, &pa)) {
2906 if (errno == ENODEV) {
2907 if (opts & PF_OPT_VERBOSE)
2908 fprintf(stderr, "No ALTQ support in kernel\n"
2909 "ALTQ related functions disabled\n");
2910 return (0);
2911 } else
2912 err(1, "DIOCGETALTQS");
2913 }
2914 return (1);
2915 }
2916
2917 int
pfctl_walk_show(int opts,struct pfioc_ruleset * pr,void * warg)2918 pfctl_walk_show(int opts, struct pfioc_ruleset *pr, void *warg)
2919 {
2920 if (pr->path[0]) {
2921 if (pr->path[0] != '_' || (opts & PF_OPT_VERBOSE))
2922 printf(" %s/%s\n", pr->path, pr->name);
2923 } else if (pr->name[0] != '_' || (opts & PF_OPT_VERBOSE))
2924 printf(" %s\n", pr->name);
2925
2926 return (0);
2927 }
2928
2929 int
pfctl_walk_get(int opts,struct pfioc_ruleset * pr,void * warg)2930 pfctl_walk_get(int opts, struct pfioc_ruleset *pr, void *warg)
2931 {
2932 struct pfr_anchoritem *pfra;
2933 struct pfr_anchors *anchors;
2934 int e;
2935
2936 anchors = (struct pfr_anchors *)warg;
2937
2938 pfra = malloc(sizeof(*pfra));
2939 if (pfra == NULL)
2940 err(1, "%s", __func__);
2941
2942 if (pr->path[0])
2943 e = asprintf(&pfra->pfra_anchorname, "%s/%s", pr->path,
2944 pr->name);
2945 else
2946 e = asprintf(&pfra->pfra_anchorname, "%s", pr->name);
2947
2948 if (e == -1)
2949 err(1, "%s", __func__);
2950
2951 SLIST_INSERT_HEAD(anchors, pfra, pfra_sle);
2952
2953 return (0);
2954 }
2955
2956 int
pfctl_walk_anchors(int dev,int opts,const char * anchor,int (walkf)(int,struct pfioc_ruleset *,void *),void * warg)2957 pfctl_walk_anchors(int dev, int opts, const char *anchor,
2958 int(walkf)(int, struct pfioc_ruleset *, void *), void *warg)
2959 {
2960 struct pfioc_ruleset pr;
2961 u_int32_t mnr, nr;
2962 int ret;
2963
2964 memset(&pr, 0, sizeof(pr));
2965 if ((ret = pfctl_get_rulesets(pfh, anchor, &mnr)) != 0) {
2966 if (ret == EINVAL)
2967 fprintf(stderr, "Anchor '%s' not found.\n", anchor);
2968 else
2969 errc(1, ret, "DIOCGETRULESETS");
2970 return (-1);
2971 }
2972 for (nr = 0; nr < mnr; ++nr) {
2973 char sub[MAXPATHLEN];
2974
2975 if ((ret = pfctl_get_ruleset(pfh, anchor, nr, &pr)) != 0)
2976 errc(1, ret, "DIOCGETRULESET");
2977 if (!strcmp(pr.name, PF_RESERVED_ANCHOR))
2978 continue;
2979 sub[0] = '\0';
2980 if (walkf(opts, &pr, warg))
2981 return (-1);
2982
2983 if (pr.path[0])
2984 snprintf(sub, sizeof(sub), "%s/%s", pr.path, pr.name);
2985 else
2986 snprintf(sub, sizeof(sub), "%s", pr.name);
2987 if (pfctl_walk_anchors(dev, opts, sub, walkf, warg))
2988 return (-1);
2989 }
2990 return (0);
2991 }
2992
2993 int
pfctl_show_anchors(int dev,int opts,char * anchor)2994 pfctl_show_anchors(int dev, int opts, char *anchor)
2995 {
2996 return (
2997 pfctl_walk_anchors(dev, opts, anchor, pfctl_walk_show, NULL));
2998 }
2999
3000 struct pfr_anchors *
pfctl_get_anchors(int dev,char * anchor,int opts)3001 pfctl_get_anchors(int dev, char *anchor, int opts)
3002 {
3003 struct pfioc_ruleset pr;
3004 static struct pfr_anchors anchors;
3005 char *n;
3006
3007 SLIST_INIT(&anchors);
3008
3009 memset(&pr, 0, sizeof(pr));
3010 if (*anchor != '\0') {
3011 n = dirname(anchor);
3012 if (n[0] != '.' && n[1] != '\0')
3013 strlcpy(pr.path, n, sizeof(pr.path));
3014 n = basename(anchor);
3015 if (n != NULL)
3016 strlcpy(pr.name, n, sizeof(pr.name));
3017 }
3018
3019 /* insert a root anchor first. */
3020 pfctl_walk_get(opts, &pr, &anchors);
3021
3022 if (pfctl_walk_anchors(dev, opts, anchor, pfctl_walk_get, &anchors))
3023 errx(1, "%s failed to retrieve list of anchors, can't continue",
3024 __func__);
3025
3026 return (&anchors);
3027 }
3028
3029 int
pfctl_call_cleartables(int dev,int opts,struct pfr_anchoritem * pfra)3030 pfctl_call_cleartables(int dev, int opts, struct pfr_anchoritem *pfra)
3031 {
3032 /*
3033 * PF_OPT_QUIET makes pfctl_clear_tables() to stop printing number of
3034 * tables cleared for given anchor.
3035 */
3036 opts |= PF_OPT_QUIET;
3037 return ((pfctl_do_clear_tables(pfra->pfra_anchorname, opts) == -1) ?
3038 1 : 0);
3039 }
3040
3041 int
pfctl_call_clearrules(int dev,int opts,struct pfr_anchoritem * pfra)3042 pfctl_call_clearrules(int dev, int opts, struct pfr_anchoritem *pfra)
3043 {
3044 /*
3045 * PF_OPT_QUIET makes pfctl_clear_rules() to stop printing a 'rules
3046 * cleared' message for every anchor it deletes.
3047 */
3048 opts |= PF_OPT_QUIET;
3049 return (pfctl_flush_rules(dev, opts, pfra->pfra_anchorname));
3050 }
3051
3052 int
pfctl_call_clearanchors(int dev,int opts,struct pfr_anchoritem * pfra)3053 pfctl_call_clearanchors(int dev, int opts, struct pfr_anchoritem *pfra)
3054 {
3055 int rv = 0;
3056
3057 rv |= pfctl_call_cleartables(dev, opts, pfra);
3058 rv |= pfctl_call_clearrules(dev, opts, pfra);
3059
3060 return (rv);
3061 }
3062
3063 int
pfctl_recurse(int dev,int opts,char * anchorname,int (* walkf)(int,int,struct pfr_anchoritem *))3064 pfctl_recurse(int dev, int opts, char *anchorname,
3065 int(*walkf)(int, int, struct pfr_anchoritem *))
3066 {
3067 int rv = 0;
3068 struct pfr_anchors *anchors;
3069 struct pfr_anchoritem *pfra, *pfra_save;
3070
3071 anchors = pfctl_get_anchors(dev, anchorname, opts);
3072 /*
3073 * While traversing the list, pfctl_clear_*() must always return
3074 * so that failures on one anchor do not prevent clearing others.
3075 */
3076 opts |= PF_OPT_IGNFAIL;
3077 printf("Removing:\n");
3078 SLIST_FOREACH_SAFE(pfra, anchors, pfra_sle, pfra_save) {
3079 printf(" %s\n",
3080 (*pfra->pfra_anchorname == '\0') ? "/" :
3081 pfra->pfra_anchorname);
3082 rv |= walkf(dev, opts, pfra);
3083 SLIST_REMOVE(anchors, pfra, pfr_anchoritem, pfra_sle);
3084 free(pfra->pfra_anchorname);
3085 free(pfra);
3086 }
3087
3088 return (rv);
3089 }
3090
3091 int
pfctl_show_eth_anchors(int dev,int opts,char * anchorname)3092 pfctl_show_eth_anchors(int dev, int opts, char *anchorname)
3093 {
3094 struct pfctl_eth_rulesets_info ri;
3095 struct pfctl_eth_ruleset_info rs;
3096 int ret;
3097
3098 if ((ret = pfctl_get_eth_rulesets_info(dev, &ri, anchorname)) != 0) {
3099 if (ret == ENOENT)
3100 fprintf(stderr, "Anchor '%s' not found.\n",
3101 anchorname);
3102 else
3103 errc(1, ret, "DIOCGETETHRULESETS");
3104 return (-1);
3105 }
3106
3107 for (int nr = 0; nr < ri.nr; nr++) {
3108 char sub[MAXPATHLEN];
3109
3110 if ((ret = pfctl_get_eth_ruleset(dev, anchorname, nr, &rs)) != 0)
3111 errc(1, ret, "DIOCGETETHRULESET");
3112
3113 if (!strcmp(rs.name, PF_RESERVED_ANCHOR))
3114 continue;
3115 sub[0] = 0;
3116 if (rs.path[0]) {
3117 strlcat(sub, rs.path, sizeof(sub));
3118 strlcat(sub, "/", sizeof(sub));
3119 }
3120 strlcat(sub, rs.name, sizeof(sub));
3121 if (sub[0] != '_' || (opts & PF_OPT_VERBOSE))
3122 printf(" %s\n", sub);
3123 if ((opts & PF_OPT_VERBOSE) && pfctl_show_eth_anchors(dev, opts, sub))
3124 return (-1);
3125 }
3126 return (0);
3127 }
3128
3129 const char *
pfctl_lookup_option(char * cmd,const char * const * list)3130 pfctl_lookup_option(char *cmd, const char * const *list)
3131 {
3132 if (cmd != NULL && *cmd)
3133 for (; *list; list++)
3134 if (!strncmp(cmd, *list, strlen(cmd)))
3135 return (*list);
3136 return (NULL);
3137 }
3138
3139 void
pfctl_reset(int dev,int opts)3140 pfctl_reset(int dev, int opts)
3141 {
3142 struct pfctl pf;
3143 struct pfr_buffer t;
3144 int i;
3145
3146 pf.dev = dev;
3147 pf.h = pfh;
3148 pfctl_init_options(&pf);
3149
3150 /* Force reset upon pfctl_load_options() */
3151 pf.debug_set = 1;
3152 pf.reass_set = 1;
3153 pf.syncookieswat_set = 1;
3154 pf.ifname = strdup("none");
3155 if (pf.ifname == NULL)
3156 err(1, "%s: strdup", __func__);
3157 pf.ifname_set = 1;
3158
3159 memset(&t, 0, sizeof(t));
3160 t.pfrb_type = PFRB_TRANS;
3161 if (pfctl_trans(dev, &t, DIOCXBEGIN, 0))
3162 err(1, "%s: DIOCXBEGIN", __func__);
3163
3164 for (i = 0; pf_limits[i].name; i++)
3165 pf.limit_set[pf_limits[i].index] = 1;
3166
3167 for (i = 0; pf_timeouts[i].name; i++)
3168 pf.timeout_set[pf_timeouts[i].timeout] = 1;
3169
3170 pfctl_load_options(&pf);
3171
3172 if (pfctl_trans(dev, &t, DIOCXCOMMIT, 0))
3173 err(1, "%s: DIOCXCOMMIT", __func__);
3174
3175 pfctl_clear_interface_flags(dev, opts);
3176 }
3177
3178 int
main(int argc,char * argv[])3179 main(int argc, char *argv[])
3180 {
3181 int ch;
3182 int mode = O_RDONLY;
3183 int opts = 0;
3184 int optimize = PF_OPTIMIZE_BASIC;
3185 char anchorname[MAXPATHLEN];
3186 char *path;
3187
3188 if (argc < 2)
3189 usage();
3190
3191 while ((ch = getopt(argc, argv,
3192 "a:AdD:eqf:F:ghi:k:K:mMnNOo:Pp:rRs:St:T:vx:z")) != -1) {
3193 switch (ch) {
3194 case 'a':
3195 anchoropt = optarg;
3196 break;
3197 case 'd':
3198 opts |= PF_OPT_DISABLE;
3199 mode = O_RDWR;
3200 break;
3201 case 'D':
3202 if (pfctl_cmdline_symset(optarg) < 0)
3203 warnx("could not parse macro definition %s",
3204 optarg);
3205 break;
3206 case 'e':
3207 opts |= PF_OPT_ENABLE;
3208 mode = O_RDWR;
3209 break;
3210 case 'q':
3211 opts |= PF_OPT_QUIET;
3212 break;
3213 case 'F':
3214 clearopt = pfctl_lookup_option(optarg, clearopt_list);
3215 if (clearopt == NULL) {
3216 warnx("Unknown flush modifier '%s'", optarg);
3217 usage();
3218 }
3219 mode = O_RDWR;
3220 break;
3221 case 'i':
3222 ifaceopt = optarg;
3223 break;
3224 case 'k':
3225 if (state_killers >= 2) {
3226 warnx("can only specify -k twice");
3227 usage();
3228 /* NOTREACHED */
3229 }
3230 state_kill[state_killers++] = optarg;
3231 mode = O_RDWR;
3232 break;
3233 case 'K':
3234 if (src_node_killers >= 2) {
3235 warnx("can only specify -K twice");
3236 usage();
3237 /* NOTREACHED */
3238 }
3239 src_node_kill[src_node_killers++] = optarg;
3240 mode = O_RDWR;
3241 break;
3242 case 'm':
3243 opts |= PF_OPT_MERGE;
3244 break;
3245 case 'M':
3246 opts |= PF_OPT_KILLMATCH;
3247 break;
3248 case 'n':
3249 opts |= PF_OPT_NOACTION;
3250 break;
3251 case 'N':
3252 loadopt |= PFCTL_FLAG_NAT;
3253 break;
3254 case 'r':
3255 opts |= PF_OPT_USEDNS;
3256 break;
3257 case 'f':
3258 rulesopt = optarg;
3259 mode = O_RDWR;
3260 break;
3261 case 'g':
3262 opts |= PF_OPT_DEBUG;
3263 break;
3264 case 'A':
3265 loadopt |= PFCTL_FLAG_ALTQ;
3266 break;
3267 case 'R':
3268 loadopt |= PFCTL_FLAG_FILTER;
3269 break;
3270 case 'o':
3271 optiopt = pfctl_lookup_option(optarg, optiopt_list);
3272 if (optiopt == NULL) {
3273 warnx("Unknown optimization '%s'", optarg);
3274 usage();
3275 }
3276 opts |= PF_OPT_OPTIMIZE;
3277 break;
3278 case 'O':
3279 loadopt |= PFCTL_FLAG_OPTION;
3280 break;
3281 case 'p':
3282 pf_device = optarg;
3283 break;
3284 case 'P':
3285 opts |= PF_OPT_NUMERIC;
3286 break;
3287 case 's':
3288 showopt = pfctl_lookup_option(optarg, showopt_list);
3289 if (showopt == NULL) {
3290 warnx("Unknown show modifier '%s'", optarg);
3291 usage();
3292 }
3293 break;
3294 case 'S':
3295 opts |= PF_OPT_NODNS;
3296 break;
3297 case 't':
3298 tableopt = optarg;
3299 break;
3300 case 'T':
3301 tblcmdopt = pfctl_lookup_option(optarg, tblcmdopt_list);
3302 if (tblcmdopt == NULL) {
3303 warnx("Unknown table command '%s'", optarg);
3304 usage();
3305 }
3306 break;
3307 case 'v':
3308 if (opts & PF_OPT_VERBOSE)
3309 opts |= PF_OPT_VERBOSE2;
3310 opts |= PF_OPT_VERBOSE;
3311 break;
3312 case 'x':
3313 debugopt = pfctl_lookup_option(optarg, debugopt_list);
3314 if (debugopt == NULL) {
3315 warnx("Unknown debug level '%s'", optarg);
3316 usage();
3317 }
3318 mode = O_RDWR;
3319 break;
3320 case 'z':
3321 opts |= PF_OPT_CLRRULECTRS;
3322 mode = O_RDWR;
3323 break;
3324 case 'h':
3325 /* FALLTHROUGH */
3326 default:
3327 usage();
3328 /* NOTREACHED */
3329 }
3330 }
3331
3332 if ((opts & PF_OPT_NODNS) && (opts & PF_OPT_USEDNS))
3333 errx(1, "-N and -r are mutually exclusive");
3334
3335 if ((tblcmdopt == NULL) ^ (tableopt == NULL))
3336 usage();
3337
3338 if (tblcmdopt != NULL) {
3339 argc -= optind;
3340 argv += optind;
3341 ch = *tblcmdopt;
3342 if (ch == 'l') {
3343 loadopt |= PFCTL_FLAG_TABLE;
3344 tblcmdopt = NULL;
3345 } else
3346 mode = strchr("st", ch) ? O_RDONLY : O_RDWR;
3347 } else if (argc != optind) {
3348 warnx("unknown command line argument: %s ...", argv[optind]);
3349 usage();
3350 /* NOTREACHED */
3351 }
3352 if (loadopt == 0)
3353 loadopt = ~0;
3354
3355 memset(anchorname, 0, sizeof(anchorname));
3356 if (anchoropt != NULL) {
3357 int len = strlen(anchoropt);
3358
3359 if (anchoropt[0] == '\0')
3360 errx(1, "anchor name must not be empty");
3361 if (mode == O_RDONLY && showopt == NULL && tblcmdopt == NULL) {
3362 warnx("anchors apply to -f, -F, -s, and -T only");
3363 usage();
3364 }
3365 if (mode == O_RDWR && tblcmdopt == NULL &&
3366 (anchoropt[0] == '_' || strstr(anchoropt, "/_") != NULL))
3367 errx(1, "anchor names beginning with '_' cannot "
3368 "be modified from the command line");
3369
3370 if (len >= 1 && anchoropt[len - 1] == '*') {
3371 if (len >= 2 && anchoropt[len - 2] == '/')
3372 anchoropt[len - 2] = '\0';
3373 else
3374 anchoropt[len - 1] = '\0';
3375 opts |= PF_OPT_RECURSE;
3376 }
3377 if (strlcpy(anchorname, anchoropt,
3378 sizeof(anchorname)) >= sizeof(anchorname))
3379 errx(1, "anchor name '%s' too long",
3380 anchoropt);
3381 loadopt &= PFCTL_FLAG_FILTER|PFCTL_FLAG_NAT|PFCTL_FLAG_TABLE|PFCTL_FLAG_ETH;
3382 }
3383
3384 if ((opts & PF_OPT_NOACTION) == 0) {
3385 dev = open(pf_device, mode);
3386 if (dev == -1)
3387 err(1, "%s", pf_device);
3388 altqsupport = pfctl_test_altqsupport(dev, opts);
3389 } else {
3390 dev = open(pf_device, O_RDONLY);
3391 if (dev >= 0)
3392 opts |= PF_OPT_DUMMYACTION;
3393 /* turn off options */
3394 opts &= ~ (PF_OPT_DISABLE | PF_OPT_ENABLE);
3395 clearopt = showopt = debugopt = NULL;
3396 #if !defined(ENABLE_ALTQ)
3397 altqsupport = 0;
3398 #else
3399 altqsupport = 1;
3400 #endif
3401 }
3402 pfh = pfctl_open(pf_device);
3403 if (pfh == NULL)
3404 err(1, "Failed to open netlink");
3405
3406 if (opts & PF_OPT_DISABLE)
3407 if (pfctl_disable(dev, opts))
3408 exit_val = 1;
3409
3410 if ((path = calloc(1, MAXPATHLEN)) == NULL)
3411 errx(1, "%s: calloc", __func__);
3412
3413 if (showopt != NULL) {
3414 switch (*showopt) {
3415 case 'A':
3416 pfctl_show_anchors(dev, opts, anchorname);
3417 if (opts & PF_OPT_VERBOSE2)
3418 printf("Ethernet:\n");
3419 pfctl_show_eth_anchors(dev, opts, anchorname);
3420 break;
3421 case 'r':
3422 pfctl_load_fingerprints(dev, opts);
3423 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_RULES,
3424 anchorname, 0, 0);
3425 break;
3426 case 'l':
3427 pfctl_load_fingerprints(dev, opts);
3428 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_LABELS,
3429 anchorname, 0, 0);
3430 break;
3431 case 'n':
3432 pfctl_load_fingerprints(dev, opts);
3433 pfctl_show_nat(dev, path, opts, anchorname, 0, 0);
3434 break;
3435 case 'q':
3436 pfctl_show_altq(dev, ifaceopt, opts,
3437 opts & PF_OPT_VERBOSE2);
3438 break;
3439 case 's':
3440 pfctl_show_states(dev, ifaceopt, opts);
3441 break;
3442 case 'S':
3443 pfctl_show_src_nodes(dev, opts);
3444 break;
3445 case 'i':
3446 pfctl_show_status(dev, opts);
3447 break;
3448 case 'R':
3449 exit_val = pfctl_show_running(dev);
3450 break;
3451 case 't':
3452 pfctl_show_timeouts(dev, opts);
3453 break;
3454 case 'm':
3455 pfctl_show_limits(dev, opts);
3456 break;
3457 case 'e':
3458 pfctl_show_eth_rules(dev, path, opts, 0, anchorname, 0,
3459 0);
3460 break;
3461 case 'a':
3462 opts |= PF_OPT_SHOWALL;
3463 pfctl_load_fingerprints(dev, opts);
3464
3465 pfctl_show_eth_rules(dev, path, opts, 0, anchorname, 0,
3466 0);
3467
3468 pfctl_show_nat(dev, path, opts, anchorname, 0, 0);
3469 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_RULES,
3470 anchorname, 0, 0);
3471 pfctl_show_altq(dev, ifaceopt, opts, 0);
3472 pfctl_show_states(dev, ifaceopt, opts);
3473 pfctl_show_src_nodes(dev, opts);
3474 pfctl_show_status(dev, opts);
3475 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_LABELS,
3476 anchorname, 0, 0);
3477 pfctl_show_timeouts(dev, opts);
3478 pfctl_show_limits(dev, opts);
3479 pfctl_show_tables(anchorname, opts);
3480 pfctl_show_fingerprints(opts);
3481 break;
3482 case 'T':
3483 pfctl_show_tables(anchorname, opts);
3484 break;
3485 case 'o':
3486 pfctl_load_fingerprints(dev, opts);
3487 pfctl_show_fingerprints(opts);
3488 break;
3489 case 'I':
3490 pfctl_show_ifaces(ifaceopt, opts);
3491 break;
3492 case 'c':
3493 pfctl_show_creators(opts);
3494 break;
3495 }
3496 }
3497
3498 if ((opts & PF_OPT_CLRRULECTRS) && showopt == NULL) {
3499 pfctl_show_eth_rules(dev, path, opts, PFCTL_SHOW_NOTHING,
3500 anchorname, 0, 0);
3501 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_NOTHING,
3502 anchorname, 0, 0);
3503 }
3504
3505 if (clearopt != NULL) {
3506 switch (*clearopt) {
3507 case 'e':
3508 pfctl_flush_eth_rules(dev, opts, anchorname);
3509 break;
3510 case 'r':
3511 if (opts & PF_OPT_RECURSE)
3512 pfctl_recurse(dev, opts, anchorname,
3513 pfctl_call_clearrules);
3514 else
3515 pfctl_flush_rules(dev, opts, anchorname);
3516 break;
3517 case 'n':
3518 pfctl_flush_nat(dev, opts, anchorname);
3519 break;
3520 case 'q':
3521 pfctl_clear_altq(dev, opts);
3522 break;
3523 case 's':
3524 pfctl_clear_iface_states(dev, ifaceopt, opts);
3525 break;
3526 case 'S':
3527 pfctl_clear_src_nodes(dev, opts);
3528 break;
3529 case 'i':
3530 pfctl_clear_stats(pfh, opts);
3531 break;
3532 case 'a':
3533 if (ifaceopt) {
3534 warnx("don't specify an interface with -Fall");
3535 usage();
3536 /* NOTREACHED */
3537 }
3538 pfctl_flush_eth_rules(dev, opts, anchorname);
3539 pfctl_flush_rules(dev, opts, anchorname);
3540 pfctl_flush_nat(dev, opts, anchorname);
3541 if (opts & PF_OPT_RECURSE)
3542 pfctl_recurse(dev, opts, anchorname,
3543 pfctl_call_clearanchors);
3544 else {
3545 pfctl_do_clear_tables(anchorname, opts);
3546 pfctl_flush_rules(dev, opts, anchorname);
3547 }
3548 if (!*anchorname) {
3549 pfctl_clear_altq(dev, opts);
3550 pfctl_clear_iface_states(dev, ifaceopt, opts);
3551 pfctl_clear_src_nodes(dev, opts);
3552 pfctl_clear_stats(pfh, opts);
3553 pfctl_clear_fingerprints(dev, opts);
3554 pfctl_reset(dev, opts);
3555 }
3556 break;
3557 case 'o':
3558 pfctl_clear_fingerprints(dev, opts);
3559 break;
3560 case 'T':
3561 if ((opts & PF_OPT_RECURSE) == 0)
3562 pfctl_do_clear_tables(anchorname, opts);
3563 else
3564 pfctl_recurse(dev, opts, anchorname,
3565 pfctl_call_cleartables);
3566 break;
3567 case 'R':
3568 pfctl_reset(dev, opts);
3569 break;
3570 }
3571 }
3572 if (state_killers) {
3573 if (!strcmp(state_kill[0], "label"))
3574 pfctl_label_kill_states(dev, ifaceopt, opts);
3575 else if (!strcmp(state_kill[0], "id"))
3576 pfctl_id_kill_states(dev, ifaceopt, opts);
3577 else if (!strcmp(state_kill[0], "gateway"))
3578 pfctl_gateway_kill_states(dev, ifaceopt, opts);
3579 else if (!strcmp(state_kill[0], "key"))
3580 pfctl_key_kill_states(dev, ifaceopt, opts);
3581 else
3582 pfctl_net_kill_states(dev, ifaceopt, opts);
3583 }
3584
3585 if (src_node_killers)
3586 pfctl_kill_src_nodes(dev, opts);
3587
3588 if (tblcmdopt != NULL) {
3589 exit_val = pfctl_table(argc, argv, tableopt,
3590 tblcmdopt, rulesopt, anchorname, opts);
3591 rulesopt = NULL;
3592 }
3593 if (optiopt != NULL) {
3594 switch (*optiopt) {
3595 case 'n':
3596 optimize = 0;
3597 break;
3598 case 'b':
3599 optimize |= PF_OPTIMIZE_BASIC;
3600 break;
3601 case 'o':
3602 case 'p':
3603 optimize |= PF_OPTIMIZE_PROFILE;
3604 break;
3605 }
3606 }
3607
3608 if ((rulesopt != NULL) && (loadopt & PFCTL_FLAG_OPTION) &&
3609 !anchorname[0] && !(opts & PF_OPT_NOACTION))
3610 pfctl_get_skip_ifaces();
3611
3612 if (rulesopt != NULL && !(opts & PF_OPT_MERGE) &&
3613 !anchorname[0] && (loadopt & PFCTL_FLAG_OPTION))
3614 if (pfctl_file_fingerprints(dev, opts, PF_OSFP_FILE))
3615 exit_val = 1;
3616
3617 if (rulesopt != NULL) {
3618 if (pfctl_rules(dev, rulesopt, opts, optimize,
3619 anchorname, NULL))
3620 exit_val = 1;
3621 }
3622
3623 if (opts & PF_OPT_ENABLE)
3624 if (pfctl_enable(dev, opts))
3625 exit_val = 1;
3626
3627 if (debugopt != NULL) {
3628 switch (*debugopt) {
3629 case 'n':
3630 pfctl_debug(dev, PF_DEBUG_NONE, opts);
3631 break;
3632 case 'u':
3633 pfctl_debug(dev, PF_DEBUG_URGENT, opts);
3634 break;
3635 case 'm':
3636 pfctl_debug(dev, PF_DEBUG_MISC, opts);
3637 break;
3638 case 'l':
3639 pfctl_debug(dev, PF_DEBUG_NOISY, opts);
3640 break;
3641 }
3642 }
3643
3644 exit(exit_val);
3645 }
3646