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, const char *, int);
135 int pfctl_recurse(int, int, const 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 { "anchors", PF_LIMIT_ANCHORS },
187 { "eth-anchors", PF_LIMIT_ETH_ANCHORS },
188 { NULL, 0 }
189 };
190
191 struct pf_hint {
192 const char *name;
193 int timeout;
194 };
195 static const struct pf_hint pf_hint_normal[] = {
196 { "tcp.first", 2 * 60 },
197 { "tcp.opening", 30 },
198 { "tcp.established", 24 * 60 * 60 },
199 { "tcp.closing", 15 * 60 },
200 { "tcp.finwait", 45 },
201 { "tcp.closed", 90 },
202 { "tcp.tsdiff", 30 },
203 { NULL, 0 }
204 };
205 static const struct pf_hint pf_hint_satellite[] = {
206 { "tcp.first", 3 * 60 },
207 { "tcp.opening", 30 + 5 },
208 { "tcp.established", 24 * 60 * 60 },
209 { "tcp.closing", 15 * 60 + 5 },
210 { "tcp.finwait", 45 + 5 },
211 { "tcp.closed", 90 + 5 },
212 { "tcp.tsdiff", 60 },
213 { NULL, 0 }
214 };
215 static const struct pf_hint pf_hint_conservative[] = {
216 { "tcp.first", 60 * 60 },
217 { "tcp.opening", 15 * 60 },
218 { "tcp.established", 5 * 24 * 60 * 60 },
219 { "tcp.closing", 60 * 60 },
220 { "tcp.finwait", 10 * 60 },
221 { "tcp.closed", 3 * 60 },
222 { "tcp.tsdiff", 60 },
223 { NULL, 0 }
224 };
225 static const struct pf_hint pf_hint_aggressive[] = {
226 { "tcp.first", 30 },
227 { "tcp.opening", 5 },
228 { "tcp.established", 5 * 60 * 60 },
229 { "tcp.closing", 60 },
230 { "tcp.finwait", 30 },
231 { "tcp.closed", 30 },
232 { "tcp.tsdiff", 10 },
233 { NULL, 0 }
234 };
235
236 static const struct {
237 const char *name;
238 const struct pf_hint *hint;
239 } pf_hints[] = {
240 { "normal", pf_hint_normal },
241 { "satellite", pf_hint_satellite },
242 { "high-latency", pf_hint_satellite },
243 { "conservative", pf_hint_conservative },
244 { "aggressive", pf_hint_aggressive },
245 { NULL, NULL }
246 };
247
248 static const char * const clearopt_list[] = {
249 "nat", "queue", "rules", "Sources",
250 "states", "info", "Tables", "osfp", "all",
251 "ethernet", "Reset", NULL
252 };
253
254 static const char * const showopt_list[] = {
255 "ether", "nat", "queue", "rules", "Anchors", "Sources", "states",
256 "info", "Interfaces", "labels", "timeouts", "memory", "Tables",
257 "osfp", "Running", "all", "creatorids", NULL
258 };
259
260 static const char * const tblcmdopt_list[] = {
261 "kill", "flush", "add", "delete", "load", "replace", "show",
262 "test", "zero", "expire", "reset", NULL
263 };
264
265 static const char * const debugopt_list[] = {
266 "none", "urgent", "misc", "loud", NULL
267 };
268
269 static const char * const optiopt_list[] = {
270 "none", "basic", "profile", NULL
271 };
272
273 void
usage(void)274 usage(void)
275 {
276 extern char *__progname;
277
278 fprintf(stderr,
279 "usage: %s [-AdeghMmNnOPqRSrvz] [-a anchor] [-D macro=value] [-F modifier]\n"
280 "\t[-f file] [-i interface] [-K host | network]\n"
281 "\t[-k host | network | gateway | label | id] [-o level] [-p device]\n"
282 "\t[-s modifier] [-t table -T command [address ...]] [-x level]\n",
283 __progname);
284
285 exit(1);
286 }
287
288 void
pfctl_err(int opts,int eval,const char * fmt,...)289 pfctl_err(int opts, int eval, const char *fmt, ...)
290 {
291 va_list ap;
292
293 va_start(ap, fmt);
294
295 if ((opts & PF_OPT_IGNFAIL) == 0)
296 verr(eval, fmt, ap);
297 else
298 vwarn(fmt, ap);
299
300 va_end(ap);
301
302 exit_val = eval;
303 }
304
305 void
pfctl_errx(int opts,int eval,const char * fmt,...)306 pfctl_errx(int opts, int eval, const char *fmt, ...)
307 {
308 va_list ap;
309
310 va_start(ap, fmt);
311
312 if ((opts & PF_OPT_IGNFAIL) == 0)
313 verrx(eval, fmt, ap);
314 else
315 vwarnx(fmt, ap);
316
317 va_end(ap);
318
319 exit_val = eval;
320 }
321
322 /*
323 * Cache protocol number to name translations.
324 *
325 * Translation is performed a lot e.g., when dumping states and
326 * getprotobynumber is incredibly expensive.
327 *
328 * Note from the getprotobynumber(3) manpage:
329 * <quote>
330 * These functions use a thread-specific data space; if the data is needed
331 * for future use, it should be copied before any subsequent calls overwrite
332 * it. Only the Internet protocols are currently understood.
333 * </quote>
334 *
335 * Consequently we only cache the name and strdup it for safety.
336 *
337 * At the time of writing this comment the last entry in /etc/protocols is:
338 * divert 258 DIVERT # Divert pseudo-protocol [non IANA]
339 */
340 const char *
pfctl_proto2name(int proto)341 pfctl_proto2name(int proto)
342 {
343 static const char *pfctl_proto_cache[259];
344 struct protoent *p;
345
346 if (proto >= nitems(pfctl_proto_cache)) {
347 p = getprotobynumber(proto);
348 if (p == NULL) {
349 return (NULL);
350 }
351 return (p->p_name);
352 }
353
354 if (pfctl_proto_cache[proto] == NULL) {
355 p = getprotobynumber(proto);
356 if (p == NULL) {
357 return (NULL);
358 }
359 pfctl_proto_cache[proto] = strdup(p->p_name);
360 }
361
362 return (pfctl_proto_cache[proto]);
363 }
364
365 int
pfctl_enable(int dev,int opts)366 pfctl_enable(int dev, int opts)
367 {
368 int ret;
369
370 if ((ret = pfctl_startstop(pfh, 1)) != 0) {
371 if (ret == EEXIST)
372 errx(1, "pf already enabled");
373 else if (ret == ESRCH)
374 errx(1, "pfil registeration failed");
375 else
376 errc(1, ret, "DIOCSTART");
377 }
378 if ((opts & PF_OPT_QUIET) == 0)
379 fprintf(stderr, "pf enabled\n");
380
381 if (altqsupport && ioctl(dev, DIOCSTARTALTQ))
382 if (errno != EEXIST)
383 err(1, "DIOCSTARTALTQ");
384
385 return (0);
386 }
387
388 int
pfctl_disable(int dev,int opts)389 pfctl_disable(int dev, int opts)
390 {
391 int ret;
392
393 if ((ret = pfctl_startstop(pfh, 0)) != 0) {
394 if (ret == ENOENT)
395 errx(1, "pf not enabled");
396 else
397 errc(1, ret, "DIOCSTOP");
398 }
399 if ((opts & PF_OPT_QUIET) == 0)
400 fprintf(stderr, "pf disabled\n");
401
402 if (altqsupport && ioctl(dev, DIOCSTOPALTQ))
403 if (errno != ENOENT)
404 err(1, "DIOCSTOPALTQ");
405
406 return (0);
407 }
408
409 void
pfctl_clear_stats(struct pfctl_handle * h,int opts)410 pfctl_clear_stats(struct pfctl_handle *h, int opts)
411 {
412 int ret;
413 if ((ret = pfctl_clear_status(h)) != 0)
414 pfctl_err(opts, 1, "DIOCCLRSTATUS");
415 if ((opts & PF_OPT_QUIET) == 0)
416 fprintf(stderr, "pf: statistics cleared\n");
417 }
418
419 void
pfctl_get_skip_ifaces(void)420 pfctl_get_skip_ifaces(void)
421 {
422 bzero(&skip_b, sizeof(skip_b));
423 skip_b.pfrb_type = PFRB_IFACES;
424 for (;;) {
425 pfr_buf_grow(&skip_b, skip_b.pfrb_size);
426 skip_b.pfrb_size = skip_b.pfrb_msize;
427 if (pfi_get_ifaces(NULL, skip_b.pfrb_caddr, &skip_b.pfrb_size))
428 err(1, "pfi_get_ifaces");
429 if (skip_b.pfrb_size <= skip_b.pfrb_msize)
430 break;
431 }
432 }
433
434 void
pfctl_check_skip_ifaces(char * ifname)435 pfctl_check_skip_ifaces(char *ifname)
436 {
437 struct pfi_kif *p;
438 struct node_host *h = NULL, *n = NULL;
439
440 PFRB_FOREACH(p, &skip_b) {
441 if (!strcmp(ifname, p->pfik_name) &&
442 (p->pfik_flags & PFI_IFLAG_SKIP))
443 p->pfik_flags &= ~PFI_IFLAG_SKIP;
444 if (!strcmp(ifname, p->pfik_name) && p->pfik_group != NULL) {
445 if ((h = ifa_grouplookup(p->pfik_name, 0)) == NULL)
446 continue;
447
448 for (n = h; n != NULL; n = n->next) {
449 if (strncmp(p->pfik_name, ifname, IFNAMSIZ))
450 continue;
451
452 p->pfik_flags &= ~PFI_IFLAG_SKIP;
453 }
454 }
455 }
456 }
457
458 void
pfctl_adjust_skip_ifaces(struct pfctl * pf)459 pfctl_adjust_skip_ifaces(struct pfctl *pf)
460 {
461 struct pfi_kif *p, *pp;
462 struct node_host *h = NULL, *n = NULL;
463
464 PFRB_FOREACH(p, &skip_b) {
465 if (p->pfik_group == NULL || !(p->pfik_flags & PFI_IFLAG_SKIP))
466 continue;
467
468 pfctl_set_interface_flags(pf, p->pfik_name, PFI_IFLAG_SKIP, 0);
469 if ((h = ifa_grouplookup(p->pfik_name, 0)) == NULL)
470 continue;
471
472 for (n = h; n != NULL; n = n->next)
473 PFRB_FOREACH(pp, &skip_b) {
474 if (strncmp(pp->pfik_name, n->ifname, IFNAMSIZ))
475 continue;
476
477 if (!(pp->pfik_flags & PFI_IFLAG_SKIP))
478 pfctl_set_interface_flags(pf,
479 pp->pfik_name, PFI_IFLAG_SKIP, 1);
480 if (pp->pfik_flags & PFI_IFLAG_SKIP)
481 pp->pfik_flags &= ~PFI_IFLAG_SKIP;
482 }
483 }
484
485 PFRB_FOREACH(p, &skip_b) {
486 if (! (p->pfik_flags & PFI_IFLAG_SKIP))
487 continue;
488
489 pfctl_set_interface_flags(pf, p->pfik_name, PFI_IFLAG_SKIP, 0);
490 }
491 }
492
493 void
pfctl_clear_interface_flags(int dev,int opts)494 pfctl_clear_interface_flags(int dev, int opts)
495 {
496 struct pfioc_iface pi;
497
498 if ((opts & PF_OPT_NOACTION) == 0) {
499 bzero(&pi, sizeof(pi));
500 pi.pfiio_flags = PFI_IFLAG_SKIP;
501
502 if (ioctl(dev, DIOCCLRIFFLAG, &pi))
503 err(1, "DIOCCLRIFFLAG");
504 if ((opts & PF_OPT_QUIET) == 0)
505 fprintf(stderr, "pf: interface flags reset\n");
506 }
507 }
508
509 void
pfctl_flush_eth_rules(int dev,int opts,char * anchorname)510 pfctl_flush_eth_rules(int dev, int opts, char *anchorname)
511 {
512 int ret;
513
514 ret = pfctl_clear_eth_rules(dev, anchorname);
515 if (ret != 0)
516 err(1, "pfctl_clear_eth_rules");
517
518 if ((opts & PF_OPT_QUIET) == 0)
519 fprintf(stderr, "Ethernet rules cleared\n");
520 }
521
522 int
pfctl_flush_rules(int dev,int opts,char * anchorname)523 pfctl_flush_rules(int dev, int opts, char *anchorname)
524 {
525 int ret;
526
527 ret = pfctl_clear_rules(dev, anchorname);
528 if (ret != 0) {
529 pfctl_err(opts, 1, "%s", __func__);
530 return (1);
531 } else if ((opts & PF_OPT_QUIET) == 0)
532 fprintf(stderr, "rules cleared\n");
533
534 return (0);
535 }
536
537 void
pfctl_flush_nat(int dev,int opts,char * anchorname)538 pfctl_flush_nat(int dev, int opts, char *anchorname)
539 {
540 int ret;
541
542 ret = pfctl_clear_nat(dev, anchorname);
543 if (ret != 0)
544 err(1, "pfctl_clear_nat");
545 if ((opts & PF_OPT_QUIET) == 0)
546 fprintf(stderr, "nat cleared\n");
547 }
548
549 int
pfctl_clear_altq(int dev,int opts)550 pfctl_clear_altq(int dev, int opts)
551 {
552 struct pfr_buffer t;
553
554 if (!altqsupport)
555 return (-1);
556 memset(&t, 0, sizeof(t));
557 t.pfrb_type = PFRB_TRANS;
558 if (pfctl_add_trans(&t, PF_RULESET_ALTQ, "") ||
559 pfctl_trans(dev, &t, DIOCXBEGIN, 0) ||
560 pfctl_trans(dev, &t, DIOCXCOMMIT, 0))
561 err(1, "pfctl_clear_altq");
562 if ((opts & PF_OPT_QUIET) == 0)
563 fprintf(stderr, "altq cleared\n");
564 return (0);
565 }
566
567 void
pfctl_clear_src_nodes(int dev,int opts)568 pfctl_clear_src_nodes(int dev, int opts)
569 {
570 if (ioctl(dev, DIOCCLRSRCNODES))
571 pfctl_err(opts, 1, "DIOCCLRSRCNODES");
572 if ((opts & PF_OPT_QUIET) == 0)
573 fprintf(stderr, "source tracking entries cleared\n");
574 }
575
576 void
pfctl_clear_iface_states(int dev,const char * iface,int opts)577 pfctl_clear_iface_states(int dev, const char *iface, int opts)
578 {
579 struct pfctl_kill kill;
580 unsigned int killed;
581 int ret;
582
583 memset(&kill, 0, sizeof(kill));
584 if (iface != NULL && strlcpy(kill.ifname, iface,
585 sizeof(kill.ifname)) >= sizeof(kill.ifname))
586 pfctl_errx(opts, 1, "invalid interface: %s", iface);
587
588 if (opts & PF_OPT_KILLMATCH)
589 kill.kill_match = true;
590
591 if ((ret = pfctl_clear_states_h(pfh, &kill, &killed)) != 0)
592 pfctl_err(opts, 1, "DIOCCLRSTATUS");
593 if ((opts & PF_OPT_QUIET) == 0)
594 fprintf(stderr, "%d states cleared\n", killed);
595 }
596
597 struct addrinfo *
pfctl_addrprefix(char * addr,struct pf_addr * mask,int numeric)598 pfctl_addrprefix(char *addr, struct pf_addr *mask, int numeric)
599 {
600 char *p;
601 const char *errstr;
602 int prefix, ret_ga, q, r;
603 struct addrinfo hints, *res;
604
605 bzero(&hints, sizeof(hints));
606 hints.ai_socktype = SOCK_DGRAM; /* dummy */
607 if (numeric)
608 hints.ai_flags = AI_NUMERICHOST;
609
610 if ((p = strchr(addr, '/')) != NULL) {
611 *p++ = '\0';
612 /* prefix only with numeric addresses */
613 hints.ai_flags |= AI_NUMERICHOST;
614 }
615
616 if ((ret_ga = getaddrinfo(addr, NULL, &hints, &res))) {
617 errx(1, "getaddrinfo: %s", gai_strerror(ret_ga));
618 /* NOTREACHED */
619 }
620
621 if (p == NULL)
622 return (res);
623
624 prefix = strtonum(p, 0, res->ai_family == AF_INET6 ? 128 : 32, &errstr);
625 if (errstr)
626 errx(1, "prefix is %s: %s", errstr, p);
627
628 q = prefix >> 3;
629 r = prefix & 7;
630 switch (res->ai_family) {
631 case AF_INET:
632 bzero(&mask->v4, sizeof(mask->v4));
633 mask->v4.s_addr = htonl((u_int32_t)
634 (0xffffffffffULL << (32 - prefix)));
635 break;
636 case AF_INET6:
637 bzero(&mask->v6, sizeof(mask->v6));
638 if (q > 0)
639 memset((void *)&mask->v6, 0xff, q);
640 if (r > 0)
641 *((u_char *)&mask->v6 + q) =
642 (0xff00 >> r) & 0xff;
643 break;
644 }
645
646 return (res);
647 }
648
649 void
pfctl_kill_src_nodes(int dev,int opts)650 pfctl_kill_src_nodes(int dev, int opts)
651 {
652 struct pfioc_src_node_kill psnk;
653 struct addrinfo *res[2], *resp[2];
654 struct sockaddr last_src, last_dst;
655 int killed, sources, dests;
656
657 killed = sources = dests = 0;
658
659 memset(&psnk, 0, sizeof(psnk));
660 memset(&psnk.psnk_src.addr.v.a.mask, 0xff,
661 sizeof(psnk.psnk_src.addr.v.a.mask));
662 memset(&last_src, 0xff, sizeof(last_src));
663 memset(&last_dst, 0xff, sizeof(last_dst));
664
665 res[0] = pfctl_addrprefix(src_node_kill[0],
666 &psnk.psnk_src.addr.v.a.mask, (opts & PF_OPT_NODNS));
667
668 for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) {
669 if (resp[0]->ai_addr == NULL)
670 continue;
671 /* We get lots of duplicates. Catch the easy ones */
672 if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0)
673 continue;
674 last_src = *(struct sockaddr *)resp[0]->ai_addr;
675
676 psnk.psnk_af = resp[0]->ai_family;
677 sources++;
678
679 copy_satopfaddr(&psnk.psnk_src.addr.v.a.addr, resp[0]->ai_addr);
680
681 if (src_node_killers > 1) {
682 dests = 0;
683 memset(&psnk.psnk_dst.addr.v.a.mask, 0xff,
684 sizeof(psnk.psnk_dst.addr.v.a.mask));
685 memset(&last_dst, 0xff, sizeof(last_dst));
686 res[1] = pfctl_addrprefix(src_node_kill[1],
687 &psnk.psnk_dst.addr.v.a.mask,
688 (opts & PF_OPT_NODNS));
689 for (resp[1] = res[1]; resp[1];
690 resp[1] = resp[1]->ai_next) {
691 if (resp[1]->ai_addr == NULL)
692 continue;
693 if (psnk.psnk_af != resp[1]->ai_family)
694 continue;
695
696 if (memcmp(&last_dst, resp[1]->ai_addr,
697 sizeof(last_dst)) == 0)
698 continue;
699 last_dst = *(struct sockaddr *)resp[1]->ai_addr;
700
701 dests++;
702
703 copy_satopfaddr(&psnk.psnk_src.addr.v.a.addr,
704 resp[1]->ai_addr);
705 if (ioctl(dev, DIOCKILLSRCNODES, &psnk))
706 err(1, "DIOCKILLSRCNODES");
707 killed += psnk.psnk_killed;
708 }
709 freeaddrinfo(res[1]);
710 } else {
711 if (ioctl(dev, DIOCKILLSRCNODES, &psnk))
712 err(1, "DIOCKILLSRCNODES");
713 killed += psnk.psnk_killed;
714 }
715 }
716
717 freeaddrinfo(res[0]);
718
719 if ((opts & PF_OPT_QUIET) == 0)
720 fprintf(stderr, "killed %d src nodes from %d sources and %d "
721 "destinations\n", killed, sources, dests);
722 }
723
724 void
pfctl_net_kill_states(int dev,const char * iface,int opts)725 pfctl_net_kill_states(int dev, const char *iface, int opts)
726 {
727 struct pfctl_kill kill;
728 struct addrinfo *res[2], *resp[2];
729 struct sockaddr last_src, last_dst;
730 unsigned int newkilled;
731 int killed, sources, dests;
732 int ret;
733
734 killed = sources = dests = 0;
735
736 memset(&kill, 0, sizeof(kill));
737 memset(&kill.src.addr.v.a.mask, 0xff,
738 sizeof(kill.src.addr.v.a.mask));
739 memset(&last_src, 0xff, sizeof(last_src));
740 memset(&last_dst, 0xff, sizeof(last_dst));
741 if (iface != NULL && strlcpy(kill.ifname, iface,
742 sizeof(kill.ifname)) >= sizeof(kill.ifname))
743 pfctl_errx(opts, 1, "invalid interface: %s", iface);
744
745 if (state_killers == 2 && (strcmp(state_kill[0], "nat") == 0)) {
746 kill.nat = true;
747 state_kill[0] = state_kill[1];
748 state_killers = 1;
749 }
750
751 res[0] = pfctl_addrprefix(state_kill[0],
752 &kill.src.addr.v.a.mask, (opts & PF_OPT_NODNS));
753
754 if (opts & PF_OPT_KILLMATCH)
755 kill.kill_match = true;
756
757 for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) {
758 if (resp[0]->ai_addr == NULL)
759 continue;
760 /* We get lots of duplicates. Catch the easy ones */
761 if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0)
762 continue;
763 last_src = *(struct sockaddr *)resp[0]->ai_addr;
764
765 kill.af = resp[0]->ai_family;
766 sources++;
767
768 copy_satopfaddr(&kill.src.addr.v.a.addr, resp[0]->ai_addr);
769
770 if (state_killers > 1) {
771 dests = 0;
772 memset(&kill.dst.addr.v.a.mask, 0xff,
773 sizeof(kill.dst.addr.v.a.mask));
774 memset(&last_dst, 0xff, sizeof(last_dst));
775 res[1] = pfctl_addrprefix(state_kill[1],
776 &kill.dst.addr.v.a.mask,
777 (opts & PF_OPT_NODNS));
778 for (resp[1] = res[1]; resp[1];
779 resp[1] = resp[1]->ai_next) {
780 if (resp[1]->ai_addr == NULL)
781 continue;
782 if (kill.af != resp[1]->ai_family)
783 continue;
784
785 if (memcmp(&last_dst, resp[1]->ai_addr,
786 sizeof(last_dst)) == 0)
787 continue;
788 last_dst = *(struct sockaddr *)resp[1]->ai_addr;
789
790 dests++;
791
792 copy_satopfaddr(&kill.src.addr.v.a.addr,
793 resp[1]->ai_addr);
794
795 if ((ret = pfctl_kill_states_h(pfh, &kill, &newkilled)) != 0)
796 pfctl_errx(opts, 1, "DIOCKILLSTATES");
797 killed += newkilled;
798 }
799 freeaddrinfo(res[1]);
800 } else {
801 if ((ret = pfctl_kill_states_h(pfh, &kill, &newkilled)) != 0)
802 pfctl_errx(opts, 1, "DIOCKILLSTATES");
803 killed += newkilled;
804 }
805 }
806
807 freeaddrinfo(res[0]);
808
809 if ((opts & PF_OPT_QUIET) == 0)
810 fprintf(stderr, "killed %d states from %d sources and %d "
811 "destinations\n", killed, sources, dests);
812 }
813
814 void
pfctl_gateway_kill_states(int dev,const char * iface,int opts)815 pfctl_gateway_kill_states(int dev, const char *iface, int opts)
816 {
817 struct pfctl_kill kill;
818 struct addrinfo *res, *resp;
819 struct sockaddr last_src;
820 unsigned int newkilled;
821 int killed = 0;
822
823 if (state_killers != 2 || (strlen(state_kill[1]) == 0)) {
824 warnx("no gateway specified");
825 usage();
826 }
827
828 memset(&kill, 0, sizeof(kill));
829 memset(&kill.rt_addr.addr.v.a.mask, 0xff,
830 sizeof(kill.rt_addr.addr.v.a.mask));
831 memset(&last_src, 0xff, sizeof(last_src));
832 if (iface != NULL && strlcpy(kill.ifname, iface,
833 sizeof(kill.ifname)) >= sizeof(kill.ifname))
834 pfctl_errx(opts, 1, "invalid interface: %s", iface);
835
836 if (opts & PF_OPT_KILLMATCH)
837 kill.kill_match = true;
838
839 res = pfctl_addrprefix(state_kill[1], &kill.rt_addr.addr.v.a.mask,
840 (opts & PF_OPT_NODNS));
841
842 for (resp = res; resp; resp = resp->ai_next) {
843 if (resp->ai_addr == NULL)
844 continue;
845 /* We get lots of duplicates. Catch the easy ones */
846 if (memcmp(&last_src, resp->ai_addr, sizeof(last_src)) == 0)
847 continue;
848 last_src = *(struct sockaddr *)resp->ai_addr;
849
850 kill.af = resp->ai_family;
851
852 copy_satopfaddr(&kill.rt_addr.addr.v.a.addr,
853 resp->ai_addr);
854 if (pfctl_kill_states_h(pfh, &kill, &newkilled))
855 pfctl_errx(opts, 1, "DIOCKILLSTATES");
856 killed += newkilled;
857 }
858
859 freeaddrinfo(res);
860
861 if ((opts & PF_OPT_QUIET) == 0)
862 fprintf(stderr, "killed %d states\n", killed);
863 }
864
865 void
pfctl_label_kill_states(int dev,const char * iface,int opts)866 pfctl_label_kill_states(int dev, const char *iface, int opts)
867 {
868 struct pfctl_kill kill;
869 unsigned int killed;
870 int ret;
871
872 if (state_killers != 2 || (strlen(state_kill[1]) == 0)) {
873 warnx("no label specified");
874 usage();
875 }
876 memset(&kill, 0, sizeof(kill));
877 if (iface != NULL && strlcpy(kill.ifname, iface,
878 sizeof(kill.ifname)) >= sizeof(kill.ifname))
879 pfctl_errx(opts, 1, "invalid interface: %s", iface);
880
881 if (opts & PF_OPT_KILLMATCH)
882 kill.kill_match = true;
883
884 if (strlcpy(kill.label, state_kill[1], sizeof(kill.label)) >=
885 sizeof(kill.label))
886 errx(1, "label too long: %s", state_kill[1]);
887
888 if ((ret = pfctl_kill_states_h(pfh, &kill, &killed)) != 0)
889 pfctl_errx(opts, 1, "DIOCKILLSTATES");
890
891 if ((opts & PF_OPT_QUIET) == 0)
892 fprintf(stderr, "killed %d states\n", killed);
893 }
894
895 void
pfctl_id_kill_states(int dev,const char * iface,int opts)896 pfctl_id_kill_states(int dev, const char *iface, int opts)
897 {
898 struct pfctl_kill kill;
899 unsigned int killed;
900 int ret;
901
902 if (state_killers != 2 || (strlen(state_kill[1]) == 0)) {
903 warnx("no id specified");
904 usage();
905 }
906
907 memset(&kill, 0, sizeof(kill));
908
909 if (opts & PF_OPT_KILLMATCH)
910 kill.kill_match = true;
911
912 if ((sscanf(state_kill[1], "%jx/%x",
913 &kill.cmp.id, &kill.cmp.creatorid)) == 2) {
914 }
915 else if ((sscanf(state_kill[1], "%jx", &kill.cmp.id)) == 1) {
916 kill.cmp.creatorid = 0;
917 } else {
918 warnx("wrong id format specified");
919 usage();
920 }
921 if (kill.cmp.id == 0) {
922 warnx("cannot kill id 0");
923 usage();
924 }
925
926 if ((ret = pfctl_kill_states_h(pfh, &kill, &killed)) != 0)
927 pfctl_errx(opts, 1, "DIOCKILLSTATES");
928
929 if ((opts & PF_OPT_QUIET) == 0)
930 fprintf(stderr, "killed %d states\n", killed);
931 }
932
933 void
pfctl_key_kill_states(int dev,const char * iface,int opts)934 pfctl_key_kill_states(int dev, const char *iface, int opts)
935 {
936 struct pfctl_kill kill;
937 char *s, *token, *tokens[4];
938 struct protoent *p;
939 u_int i, sidx, didx;
940 int ret, killed;
941
942 if (state_killers != 2 || (strlen(state_kill[1]) == 0)) {
943 warnx("no key specified");
944 usage();
945 }
946 memset(&kill, 0, sizeof(kill));
947
948 if (iface != NULL &&
949 strlcpy(kill.ifname, iface, sizeof(kill.ifname)) >=
950 sizeof(kill.ifname))
951 pfctl_errx(opts, 1, "invalid interface: %s", iface);
952
953 s = strdup(state_kill[1]);
954 if (!s)
955 errx(1, "%s: strdup", __func__);
956 i = 0;
957 while ((token = strsep(&s, " \t")) != NULL)
958 if (*token != '\0') {
959 if (i < 4)
960 tokens[i] = token;
961 i++;
962 }
963 if (i != 4)
964 errx(1, "%s: key must be "
965 "\"protocol host1:port1 direction host2:port2\" format",
966 __func__);
967
968 if ((p = getprotobyname(tokens[0])) == NULL)
969 errx(1, "invalid protocol: %s", tokens[0]);
970 kill.proto = p->p_proto;
971
972 if (strcmp(tokens[2], "->") == 0) {
973 sidx = 1;
974 didx = 3;
975 } else if (strcmp(tokens[2], "<-") == 0) {
976 sidx = 3;
977 didx = 1;
978 } else
979 errx(1, "invalid direction: %s", tokens[2]);
980
981 if (pfctl_parse_host(tokens[sidx], &kill.src) == -1)
982 errx(1, "invalid host: %s", tokens[sidx]);
983 if (pfctl_parse_host(tokens[didx], &kill.dst) == -1)
984 errx(1, "invalid host: %s", tokens[didx]);
985
986 if ((ret = pfctl_kill_states_h(pfh, &kill, &killed)) != 0)
987 pfctl_errx(opts, 1, "DIOCKILLSTATES");
988
989 if ((opts & PF_OPT_QUIET) == 0)
990 fprintf(stderr, "killed %d states\n", killed);
991 }
992
993 int
pfctl_parse_host(char * str,struct pf_rule_addr * addr)994 pfctl_parse_host(char *str, struct pf_rule_addr *addr)
995 {
996 char *s = NULL, *sbs, *sbe;
997 struct addrinfo hints, *ai;
998
999 s = strdup(str);
1000 if (!s)
1001 errx(1, "pfctl_parse_host: strdup");
1002
1003 memset(&hints, 0, sizeof(hints));
1004 hints.ai_socktype = SOCK_DGRAM; /* dummy */
1005 hints.ai_flags = AI_NUMERICHOST;
1006
1007 if ((sbs = strchr(s, '[')) != NULL && (sbe = strrchr(s, ']')) != NULL) {
1008 hints.ai_family = AF_INET6;
1009 *(sbs++) = *sbe = '\0';
1010 } else if ((sbs = strchr(s, ':')) != NULL) {
1011 hints.ai_family = AF_INET;
1012 *(sbs++) = '\0';
1013 } else {
1014 /* Assume that no ':<number>' means port 0 */
1015 }
1016
1017 if (getaddrinfo(s, sbs, &hints, &ai) != 0)
1018 goto error;
1019
1020 copy_satopfaddr(&addr->addr.v.a.addr, ai->ai_addr);
1021 addr->port[0] = ai->ai_family == AF_INET6 ?
1022 ((struct sockaddr_in6 *)ai->ai_addr)->sin6_port :
1023 ((struct sockaddr_in *)ai->ai_addr)->sin_port;
1024 freeaddrinfo(ai);
1025 free(s);
1026
1027 memset(&addr->addr.v.a.mask, 0xff, sizeof(struct pf_addr));
1028 addr->port_op = PF_OP_EQ;
1029 addr->addr.type = PF_ADDR_ADDRMASK;
1030
1031 return (0);
1032
1033 error:
1034 free(s);
1035 return (-1);
1036 }
1037
1038 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)1039 pfctl_get_pool(int dev, struct pfctl_pool *pool, u_int32_t nr,
1040 u_int32_t ticket, int r_action, const char *anchorname, int which)
1041 {
1042 struct pfioc_pooladdr pp;
1043 struct pfctl_pooladdr *pa;
1044 u_int32_t pnr, mpnr;
1045 int ret;
1046
1047 memset(&pp, 0, sizeof(pp));
1048 if ((ret = pfctl_get_addrs(pfh, ticket, nr, r_action, anchorname, &mpnr, which)) != 0) {
1049 warnc(ret, "DIOCGETADDRS");
1050 return (-1);
1051 }
1052
1053 TAILQ_INIT(&pool->list);
1054 for (pnr = 0; pnr < mpnr; ++pnr) {
1055 if ((ret = pfctl_get_addr(pfh, ticket, nr, r_action, anchorname, pnr, &pp, which)) != 0) {
1056 warnc(ret, "DIOCGETADDR");
1057 return (-1);
1058 }
1059 pa = calloc(1, sizeof(struct pfctl_pooladdr));
1060 if (pa == NULL)
1061 err(1, "calloc");
1062 bcopy(&pp.addr, pa, sizeof(struct pfctl_pooladdr));
1063 pa->af = pp.af;
1064 TAILQ_INSERT_TAIL(&pool->list, pa, entries);
1065 }
1066
1067 return (0);
1068 }
1069
1070 void
pfctl_move_pool(struct pfctl_pool * src,struct pfctl_pool * dst)1071 pfctl_move_pool(struct pfctl_pool *src, struct pfctl_pool *dst)
1072 {
1073 struct pfctl_pooladdr *pa;
1074
1075 while ((pa = TAILQ_FIRST(&src->list)) != NULL) {
1076 TAILQ_REMOVE(&src->list, pa, entries);
1077 TAILQ_INSERT_TAIL(&dst->list, pa, entries);
1078 }
1079 }
1080
1081 void
pfctl_clear_pool(struct pfctl_pool * pool)1082 pfctl_clear_pool(struct pfctl_pool *pool)
1083 {
1084 struct pfctl_pooladdr *pa;
1085
1086 while ((pa = TAILQ_FIRST(&pool->list)) != NULL) {
1087 TAILQ_REMOVE(&pool->list, pa, entries);
1088 free(pa);
1089 }
1090 }
1091
1092 void
pfctl_print_eth_rule_counters(struct pfctl_eth_rule * rule,int opts)1093 pfctl_print_eth_rule_counters(struct pfctl_eth_rule *rule, int opts)
1094 {
1095 if (opts & PF_OPT_VERBOSE) {
1096 printf(" [ Evaluations: %-8llu Packets: %-8llu "
1097 "Bytes: %-10llu]\n",
1098 (unsigned long long)rule->evaluations,
1099 (unsigned long long)(rule->packets[0] +
1100 rule->packets[1]),
1101 (unsigned long long)(rule->bytes[0] +
1102 rule->bytes[1]));
1103 }
1104 if (opts & PF_OPT_VERBOSE2) {
1105 char timestr[30];
1106
1107 if (rule->last_active_timestamp != 0) {
1108 bcopy(ctime(&rule->last_active_timestamp), timestr,
1109 sizeof(timestr));
1110 *strchr(timestr, '\n') = '\0';
1111 } else {
1112 snprintf(timestr, sizeof(timestr), "N/A");
1113 }
1114 printf(" [ Last Active Time: %s ]\n", timestr);
1115 }
1116 }
1117
1118 void
pfctl_print_rule_counters(struct pfctl_rule * rule,int opts)1119 pfctl_print_rule_counters(struct pfctl_rule *rule, int opts)
1120 {
1121 if (opts & PF_OPT_DEBUG) {
1122 const char *t[PF_SKIP_COUNT] = { "i", "d", "f",
1123 "p", "sa", "da", "sp", "dp" };
1124 int i;
1125
1126 printf(" [ Skip steps: ");
1127 for (i = 0; i < PF_SKIP_COUNT; ++i) {
1128 if (rule->skip[i].nr == rule->nr + 1)
1129 continue;
1130 printf("%s=", t[i]);
1131 if (rule->skip[i].nr == -1)
1132 printf("end ");
1133 else
1134 printf("%u ", rule->skip[i].nr);
1135 }
1136 printf("]\n");
1137
1138 printf(" [ queue: qname=%s qid=%u pqname=%s pqid=%u ]\n",
1139 rule->qname, rule->qid, rule->pqname, rule->pqid);
1140 }
1141 if (opts & PF_OPT_VERBOSE) {
1142 printf(" [ Evaluations: %-8llu Packets: %-8llu "
1143 "Bytes: %-10llu States: %-6ju]\n",
1144 (unsigned long long)rule->evaluations,
1145 (unsigned long long)(rule->packets[0] +
1146 rule->packets[1]),
1147 (unsigned long long)(rule->bytes[0] +
1148 rule->bytes[1]), (uintmax_t)rule->states_cur);
1149 printf(" [ Source Nodes: %-6ju "
1150 "Limit: %-6ju "
1151 "NAT/RDR: %-6ju "
1152 "Route: %-6ju "
1153 "]\n",
1154 (uintmax_t)rule->src_nodes,
1155 (uintmax_t)rule->src_nodes_type[PF_SN_LIMIT],
1156 (uintmax_t)rule->src_nodes_type[PF_SN_NAT],
1157 (uintmax_t)rule->src_nodes_type[PF_SN_ROUTE]);
1158 if (!(opts & PF_OPT_DEBUG))
1159 printf(" [ Inserted: uid %u pid %u "
1160 "State Creations: %-6ju]\n",
1161 (unsigned)rule->cuid, (unsigned)rule->cpid,
1162 (uintmax_t)rule->states_tot);
1163 }
1164 if (opts & PF_OPT_VERBOSE2) {
1165 char timestr[30];
1166 if (rule->last_active_timestamp != 0) {
1167 bcopy(ctime(&rule->last_active_timestamp), timestr,
1168 sizeof(timestr));
1169 *strchr(timestr, '\n') = '\0';
1170 } else {
1171 snprintf(timestr, sizeof(timestr), "N/A");
1172 }
1173 printf(" [ Last Active Time: %s ]\n", timestr);
1174 }
1175 }
1176
1177 void
pfctl_print_title(char * title)1178 pfctl_print_title(char *title)
1179 {
1180 if (!first_title)
1181 printf("\n");
1182 first_title = 0;
1183 printf("%s\n", title);
1184 }
1185
1186 int
pfctl_show_eth_rules(int dev,char * path,int opts,enum pfctl_show format,char * anchorname,int depth,int wildcard)1187 pfctl_show_eth_rules(int dev, char *path, int opts, enum pfctl_show format,
1188 char *anchorname, int depth, int wildcard)
1189 {
1190 char anchor_call[MAXPATHLEN];
1191 struct pfctl_eth_rules_info info;
1192 struct pfctl_eth_rule rule;
1193 int brace;
1194 int dotitle = opts & PF_OPT_SHOWALL;
1195 int len = strlen(path);
1196 int ret;
1197 char *npath, *p;
1198
1199 /*
1200 * Truncate a trailing / and * on an anchorname before searching for
1201 * the ruleset, this is syntactic sugar that doesn't actually make it
1202 * to the kernel.
1203 */
1204 if ((p = strrchr(anchorname, '/')) != NULL &&
1205 p[1] == '*' && p[2] == '\0') {
1206 p[0] = '\0';
1207 }
1208
1209 if (anchorname[0] == '/') {
1210 if ((npath = calloc(1, MAXPATHLEN)) == NULL)
1211 errx(1, "calloc");
1212 snprintf(npath, MAXPATHLEN, "%s", anchorname);
1213 } else {
1214 if (path[0])
1215 snprintf(&path[len], MAXPATHLEN - len, "/%s", anchorname);
1216 else
1217 snprintf(&path[len], MAXPATHLEN - len, "%s", anchorname);
1218 npath = path;
1219 }
1220
1221 /*
1222 * If this anchor was called with a wildcard path, go through
1223 * the rulesets in the anchor rather than the rules.
1224 */
1225 if (wildcard && (opts & PF_OPT_RECURSE)) {
1226 struct pfctl_eth_rulesets_info ri;
1227 u_int32_t mnr, nr;
1228
1229 if ((ret = pfctl_get_eth_rulesets_info(dev, &ri, npath)) != 0) {
1230 if (ret == EINVAL) {
1231 fprintf(stderr, "Anchor '%s' "
1232 "not found.\n", anchorname);
1233 } else {
1234 warnc(ret, "DIOCGETETHRULESETS");
1235 return (-1);
1236 }
1237 }
1238 mnr = ri.nr;
1239
1240 pfctl_print_eth_rule_counters(&rule, opts);
1241 for (nr = 0; nr < mnr; ++nr) {
1242 struct pfctl_eth_ruleset_info rs;
1243
1244 if ((ret = pfctl_get_eth_ruleset(dev, npath, nr, &rs)) != 0)
1245 errc(1, ret, "DIOCGETETHRULESET");
1246 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1247 printf("anchor \"%s\" all {\n", rs.name);
1248 pfctl_show_eth_rules(dev, npath, opts,
1249 format, rs.name, depth + 1, 0);
1250 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1251 printf("}\n");
1252 }
1253 path[len] = '\0';
1254 return (0);
1255 }
1256
1257 if ((ret = pfctl_get_eth_rules_info(dev, &info, path)) != 0) {
1258 warnc(ret, "DIOCGETETHRULES");
1259 return (-1);
1260 }
1261 for (int nr = 0; nr < info.nr; nr++) {
1262 brace = 0;
1263 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1264 if ((ret = pfctl_get_eth_rule(dev, nr, info.ticket, path, &rule,
1265 opts & PF_OPT_CLRRULECTRS, anchor_call)) != 0) {
1266 warnc(ret, "DIOCGETETHRULE");
1267 return (-1);
1268 }
1269 if (anchor_call[0] &&
1270 ((((p = strrchr(anchor_call, '_')) != NULL) &&
1271 (p == anchor_call ||
1272 *(--p) == '/')) || (opts & PF_OPT_RECURSE))) {
1273 brace++;
1274 int aclen = strlen(anchor_call);
1275 if (anchor_call[aclen - 1] == '*')
1276 anchor_call[aclen - 2] = '\0';
1277 }
1278 p = &anchor_call[0];
1279 if (dotitle) {
1280 pfctl_print_title("ETH RULES:");
1281 dotitle = 0;
1282 }
1283 print_eth_rule(&rule, anchor_call,
1284 opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG));
1285 if (brace)
1286 printf(" {\n");
1287 else
1288 printf("\n");
1289 pfctl_print_eth_rule_counters(&rule, opts);
1290 if (brace) {
1291 pfctl_show_eth_rules(dev, path, opts, format,
1292 p, depth + 1, rule.anchor_wildcard);
1293 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1294 printf("}\n");
1295 }
1296 }
1297
1298 path[len] = '\0';
1299 return (0);
1300 }
1301
1302 int
pfctl_show_rules(int dev,char * path,int opts,enum pfctl_show format,char * anchorname,int depth,int wildcard)1303 pfctl_show_rules(int dev, char *path, int opts, enum pfctl_show format,
1304 char *anchorname, int depth, int wildcard)
1305 {
1306 struct pfctl_rules_info ri;
1307 struct pfctl_rule rule;
1308 char anchor_call[MAXPATHLEN];
1309 u_int32_t nr, header = 0;
1310 int rule_numbers = opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG);
1311 int numeric = opts & PF_OPT_NUMERIC;
1312 int len = strlen(path), ret = 0;
1313 char *npath, *p;
1314
1315 /*
1316 * Truncate a trailing / and * on an anchorname before searching for
1317 * the ruleset, this is syntactic sugar that doesn't actually make it
1318 * to the kernel.
1319 */
1320 if ((p = strrchr(anchorname, '/')) != NULL &&
1321 p[1] == '*' && p[2] == '\0') {
1322 p[0] = '\0';
1323 }
1324
1325 if (anchorname[0] == '/') {
1326 if ((npath = calloc(1, MAXPATHLEN)) == NULL)
1327 errx(1, "calloc");
1328 strlcpy(npath, anchorname, MAXPATHLEN);
1329 } else {
1330 if (path[0])
1331 snprintf(&path[len], MAXPATHLEN - len, "/%s", anchorname);
1332 else
1333 snprintf(&path[len], MAXPATHLEN - len, "%s", anchorname);
1334 npath = path;
1335 }
1336
1337 /*
1338 * If this anchor was called with a wildcard path, go through
1339 * the rulesets in the anchor rather than the rules.
1340 */
1341 if (wildcard && (opts & PF_OPT_RECURSE)) {
1342 struct pfioc_ruleset prs;
1343 u_int32_t mnr, nr;
1344
1345 memset(&prs, 0, sizeof(prs));
1346 if ((ret = pfctl_get_rulesets(pfh, npath, &mnr)) != 0)
1347 errx(1, "%s", pf_strerror(ret));
1348
1349 for (nr = 0; nr < mnr; ++nr) {
1350 if ((ret = pfctl_get_ruleset(pfh, npath, nr, &prs)) != 0)
1351 errx(1, "%s", pf_strerror(ret));
1352 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1353 printf("anchor \"%s\" all {\n", prs.name);
1354 pfctl_show_rules(dev, npath, opts,
1355 format, prs.name, depth + 1, 0);
1356 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1357 printf("}\n");
1358 }
1359 path[len] = '\0';
1360 return (0);
1361 }
1362
1363 if (opts & PF_OPT_SHOWALL) {
1364 ret = pfctl_get_rules_info_h(pfh, &ri, PF_PASS, path);
1365 if (ret != 0) {
1366 warnx("%s", pf_strerror(ret));
1367 goto error;
1368 }
1369 header++;
1370 }
1371 ret = pfctl_get_rules_info_h(pfh, &ri, PF_SCRUB, path);
1372 if (ret != 0) {
1373 warnx("%s", pf_strerror(ret));
1374 goto error;
1375 }
1376 if (opts & PF_OPT_SHOWALL) {
1377 if (format == PFCTL_SHOW_RULES && (ri.nr > 0 || header))
1378 pfctl_print_title("FILTER RULES:");
1379 else if (format == PFCTL_SHOW_LABELS && labels)
1380 pfctl_print_title("LABEL COUNTERS:");
1381 }
1382
1383 for (nr = 0; nr < ri.nr; ++nr) {
1384 if ((ret = pfctl_get_clear_rule_h(pfh, nr, ri.ticket, path, PF_SCRUB,
1385 &rule, anchor_call, opts & PF_OPT_CLRRULECTRS)) != 0) {
1386 warnc(ret, "DIOCGETRULENV");
1387 goto error;
1388 }
1389
1390 if (pfctl_get_pool(dev, &rule.rdr,
1391 nr, ri.ticket, PF_SCRUB, path, PF_RDR) != 0)
1392 goto error;
1393
1394 if (pfctl_get_pool(dev, &rule.nat,
1395 nr, ri.ticket, PF_SCRUB, path, PF_NAT) != 0)
1396 goto error;
1397
1398 if (pfctl_get_pool(dev, &rule.route,
1399 nr, ri.ticket, PF_SCRUB, path, PF_RT) != 0)
1400 goto error;
1401
1402 switch (format) {
1403 case PFCTL_SHOW_LABELS:
1404 break;
1405 case PFCTL_SHOW_RULES:
1406 if (rule.label[0][0] && (opts & PF_OPT_SHOWALL))
1407 labels = 1;
1408 print_rule(&rule, anchor_call, rule_numbers, numeric);
1409 printf("\n");
1410 pfctl_print_rule_counters(&rule, opts);
1411 break;
1412 case PFCTL_SHOW_NOTHING:
1413 break;
1414 }
1415 pfctl_clear_pool(&rule.rdr);
1416 pfctl_clear_pool(&rule.nat);
1417 pfctl_clear_pool(&rule.route);
1418 }
1419 ret = pfctl_get_rules_info_h(pfh, &ri, PF_PASS, path);
1420 if (ret != 0) {
1421 warnc(ret, "DIOCGETRULES");
1422 goto error;
1423 }
1424 for (nr = 0; nr < ri.nr; ++nr) {
1425 if ((ret = pfctl_get_clear_rule_h(pfh, nr, ri.ticket, path, PF_PASS,
1426 &rule, anchor_call, opts & PF_OPT_CLRRULECTRS)) != 0) {
1427 warnc(ret, "DIOCGETRULE");
1428 goto error;
1429 }
1430
1431 if (pfctl_get_pool(dev, &rule.rdr,
1432 nr, ri.ticket, PF_PASS, path, PF_RDR) != 0)
1433 goto error;
1434
1435 if (pfctl_get_pool(dev, &rule.nat,
1436 nr, ri.ticket, PF_PASS, path, PF_NAT) != 0)
1437 goto error;
1438
1439 if (pfctl_get_pool(dev, &rule.route,
1440 nr, ri.ticket, PF_PASS, path, PF_RT) != 0)
1441 goto error;
1442
1443 switch (format) {
1444 case PFCTL_SHOW_LABELS: {
1445 bool show = false;
1446 int i = 0;
1447
1448 while (rule.label[i][0]) {
1449 printf("%s ", rule.label[i++]);
1450 show = true;
1451 }
1452
1453 if (show) {
1454 printf("%llu %llu %llu %llu"
1455 " %llu %llu %llu %ju\n",
1456 (unsigned long long)rule.evaluations,
1457 (unsigned long long)(rule.packets[0] +
1458 rule.packets[1]),
1459 (unsigned long long)(rule.bytes[0] +
1460 rule.bytes[1]),
1461 (unsigned long long)rule.packets[0],
1462 (unsigned long long)rule.bytes[0],
1463 (unsigned long long)rule.packets[1],
1464 (unsigned long long)rule.bytes[1],
1465 (uintmax_t)rule.states_tot);
1466 }
1467
1468 if (anchor_call[0] &&
1469 (((p = strrchr(anchor_call, '/')) ?
1470 p[1] == '_' : anchor_call[0] == '_') ||
1471 opts & PF_OPT_RECURSE)) {
1472 pfctl_show_rules(dev, npath, opts, format,
1473 anchor_call, depth, rule.anchor_wildcard);
1474 }
1475 break;
1476 }
1477 case PFCTL_SHOW_RULES:
1478 if (rule.label[0][0] && (opts & PF_OPT_SHOWALL))
1479 labels = 1;
1480 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1481 print_rule(&rule, anchor_call, rule_numbers, numeric);
1482
1483 /*
1484 * If this is a 'unnamed' brace notation
1485 * anchor, OR the user has explicitly requested
1486 * recursion, print it recursively.
1487 */
1488 if (anchor_call[0] &&
1489 (((p = strrchr(anchor_call, '/')) ?
1490 p[1] == '_' : anchor_call[0] == '_') ||
1491 opts & PF_OPT_RECURSE)) {
1492 printf(" {\n");
1493 pfctl_print_rule_counters(&rule, opts);
1494 pfctl_show_rules(dev, npath, opts, format,
1495 anchor_call, depth + 1,
1496 rule.anchor_wildcard);
1497 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1498 printf("}\n");
1499 } else {
1500 printf("\n");
1501 pfctl_print_rule_counters(&rule, opts);
1502 }
1503 break;
1504 case PFCTL_SHOW_NOTHING:
1505 break;
1506 }
1507 pfctl_clear_pool(&rule.rdr);
1508 pfctl_clear_pool(&rule.nat);
1509 }
1510
1511 error:
1512 path[len] = '\0';
1513 return (ret);
1514 }
1515
1516 int
pfctl_show_nat(int dev,const char * path,int opts,char * anchorname,int depth,int wildcard)1517 pfctl_show_nat(int dev, const char *path, int opts, char *anchorname, int depth,
1518 int wildcard)
1519 {
1520 struct pfctl_rules_info ri;
1521 struct pfctl_rule rule;
1522 char anchor_call[MAXPATHLEN];
1523 u_int32_t nr;
1524 static int nattype[3] = { PF_NAT, PF_RDR, PF_BINAT };
1525 int i, dotitle = opts & PF_OPT_SHOWALL;
1526 int ret;
1527 int len = strlen(path);
1528 char *npath, *p;
1529
1530 /*
1531 * Truncate a trailing / and * on an anchorname before searching for
1532 * the ruleset, this is syntactic sugar that doesn't actually make it
1533 * to the kernel.
1534 */
1535 if ((p = strrchr(anchorname, '/')) != NULL &&
1536 p[1] == '*' && p[2] == '\0') {
1537 p[0] = '\0';
1538 }
1539
1540 if ((npath = calloc(1, MAXPATHLEN)) == NULL)
1541 errx(1, "calloc");
1542
1543 if (anchorname[0] == '/') {
1544 snprintf(npath, MAXPATHLEN, "%s", anchorname);
1545 } else {
1546 snprintf(npath, MAXPATHLEN, "%s", path);
1547 if (npath[0])
1548 snprintf(&npath[len], MAXPATHLEN - len, "/%s", anchorname);
1549 else
1550 snprintf(&npath[len], MAXPATHLEN - len, "%s", anchorname);
1551 }
1552
1553 /*
1554 * If this anchor was called with a wildcard path, go through
1555 * the rulesets in the anchor rather than the rules.
1556 */
1557 if (wildcard && (opts & PF_OPT_RECURSE)) {
1558 struct pfioc_ruleset prs;
1559 u_int32_t mnr, nr;
1560 memset(&prs, 0, sizeof(prs));
1561 if ((ret = pfctl_get_rulesets(pfh, npath, &mnr)) != 0) {
1562 if (ret == EINVAL)
1563 fprintf(stderr, "NAT anchor '%s' "
1564 "not found.\n", anchorname);
1565 else
1566 errx(1, "%s", pf_strerror(ret));
1567 }
1568
1569 for (nr = 0; nr < mnr; ++nr) {
1570 if ((ret = pfctl_get_ruleset(pfh, npath, nr, &prs)) != 0)
1571 errx(1, "%s", pf_strerror(ret));
1572 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1573 printf("nat-anchor \"%s\" all {\n", prs.name);
1574 pfctl_show_nat(dev, npath, opts,
1575 prs.name, depth + 1, 0);
1576 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1577 printf("}\n");
1578 }
1579 npath[len] = '\0';
1580 return (0);
1581 }
1582
1583 for (i = 0; i < 3; i++) {
1584 ret = pfctl_get_rules_info_h(pfh, &ri, nattype[i], npath);
1585 if (ret != 0) {
1586 warnc(ret, "DIOCGETRULES");
1587 return (-1);
1588 }
1589 for (nr = 0; nr < ri.nr; ++nr) {
1590 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1591
1592 if ((ret = pfctl_get_rule_h(pfh, nr, ri.ticket, npath,
1593 nattype[i], &rule, anchor_call)) != 0) {
1594 warnc(ret, "DIOCGETRULE");
1595 return (-1);
1596 }
1597 if (pfctl_get_pool(dev, &rule.rdr, nr,
1598 ri.ticket, nattype[i], npath, PF_RDR) != 0)
1599 return (-1);
1600 if (pfctl_get_pool(dev, &rule.nat, nr,
1601 ri.ticket, nattype[i], npath, PF_NAT) != 0)
1602 return (-1);
1603 if (pfctl_get_pool(dev, &rule.route, nr,
1604 ri.ticket, nattype[i], npath, PF_RT) != 0)
1605 return (-1);
1606
1607 if (dotitle) {
1608 pfctl_print_title("TRANSLATION RULES:");
1609 dotitle = 0;
1610 }
1611 print_rule(&rule, anchor_call,
1612 opts & PF_OPT_VERBOSE2, opts & PF_OPT_NUMERIC);
1613 if (anchor_call[0] &&
1614 (((p = strrchr(anchor_call, '/')) ?
1615 p[1] == '_' : anchor_call[0] == '_') ||
1616 opts & PF_OPT_RECURSE)) {
1617 printf(" {\n");
1618 pfctl_print_rule_counters(&rule, opts);
1619 pfctl_show_nat(dev, npath, opts, anchor_call,
1620 depth + 1, rule.anchor_wildcard);
1621 INDENT(depth, !(opts & PF_OPT_VERBOSE));
1622 printf("}\n");
1623 } else {
1624 printf("\n");
1625 pfctl_print_rule_counters(&rule, opts);
1626 }
1627 }
1628 }
1629 return (0);
1630 }
1631
1632 static int
pfctl_print_src_node(struct pfctl_src_node * sn,void * arg)1633 pfctl_print_src_node(struct pfctl_src_node *sn, void *arg)
1634 {
1635 int *opts = (int *)arg;
1636
1637 if (*opts & PF_OPT_SHOWALL) {
1638 pfctl_print_title("SOURCE TRACKING NODES:");
1639 *opts &= ~PF_OPT_SHOWALL;
1640 }
1641
1642 print_src_node(sn, *opts);
1643
1644 return (0);
1645 }
1646
1647 int
pfctl_show_src_nodes(int dev,int opts)1648 pfctl_show_src_nodes(int dev, int opts)
1649 {
1650 int error;
1651
1652 error = pfctl_get_srcnodes(pfh, pfctl_print_src_node, &opts);
1653
1654 return (error);
1655 }
1656
1657 struct pfctl_show_state_arg {
1658 int opts;
1659 int dotitle;
1660 const char *iface;
1661 };
1662
1663 static int
pfctl_show_state(struct pfctl_state * s,void * arg)1664 pfctl_show_state(struct pfctl_state *s, void *arg)
1665 {
1666 struct pfctl_show_state_arg *a = (struct pfctl_show_state_arg *)arg;
1667
1668 if (a->dotitle) {
1669 pfctl_print_title("STATES:");
1670 a->dotitle = 0;
1671 }
1672 print_state(s, a->opts);
1673
1674 return (0);
1675 }
1676
1677 int
pfctl_show_states(int dev,const char * iface,int opts)1678 pfctl_show_states(int dev, const char *iface, int opts)
1679 {
1680 struct pfctl_show_state_arg arg;
1681 struct pfctl_state_filter filter = {};
1682
1683 if (iface != NULL)
1684 strlcpy(filter.ifname, iface, IFNAMSIZ);
1685
1686 arg.opts = opts;
1687 arg.dotitle = opts & PF_OPT_SHOWALL;
1688 arg.iface = iface;
1689
1690 if (pfctl_get_filtered_states_iter(&filter, pfctl_show_state, &arg))
1691 return (-1);
1692
1693 return (0);
1694 }
1695
1696 int
pfctl_show_status(int dev,int opts)1697 pfctl_show_status(int dev, int opts)
1698 {
1699 struct pfctl_status *status;
1700 struct pfctl_syncookies cookies;
1701 int ret;
1702
1703 if ((status = pfctl_get_status_h(pfh)) == NULL) {
1704 warn("DIOCGETSTATUS");
1705 return (-1);
1706 }
1707 if ((ret = pfctl_get_syncookies(dev, &cookies)) != 0) {
1708 pfctl_free_status(status);
1709 warnc(ret, "DIOCGETSYNCOOKIES");
1710 return (-1);
1711 }
1712 if (opts & PF_OPT_SHOWALL)
1713 pfctl_print_title("INFO:");
1714 print_status(status, &cookies, opts);
1715 pfctl_free_status(status);
1716 return (0);
1717 }
1718
1719 int
pfctl_show_running(int dev)1720 pfctl_show_running(int dev)
1721 {
1722 struct pfctl_status *status;
1723 int running;
1724
1725 if ((status = pfctl_get_status_h(pfh)) == NULL) {
1726 warn("DIOCGETSTATUS");
1727 return (-1);
1728 }
1729
1730 running = status->running;
1731
1732 print_running(status);
1733 pfctl_free_status(status);
1734 return (!running);
1735 }
1736
1737 int
pfctl_show_timeouts(int dev,int opts)1738 pfctl_show_timeouts(int dev, int opts)
1739 {
1740 uint32_t seconds;
1741 int i;
1742 int ret;
1743
1744 if (opts & PF_OPT_SHOWALL)
1745 pfctl_print_title("TIMEOUTS:");
1746 for (i = 0; pf_timeouts[i].name; i++) {
1747 if ((ret = pfctl_get_timeout(pfh, pf_timeouts[i].timeout, &seconds)) != 0)
1748 errc(1, ret, "DIOCGETTIMEOUT");
1749 printf("%-20s %10d", pf_timeouts[i].name, seconds);
1750 if (pf_timeouts[i].timeout >= PFTM_ADAPTIVE_START &&
1751 pf_timeouts[i].timeout <= PFTM_ADAPTIVE_END)
1752 printf(" states");
1753 else
1754 printf("s");
1755 printf("\n");
1756 }
1757 return (0);
1758
1759 }
1760
1761 int
pfctl_show_limits(int dev,int opts)1762 pfctl_show_limits(int dev, int opts)
1763 {
1764 unsigned int limit;
1765 int i;
1766 int ret;
1767
1768 if (opts & PF_OPT_SHOWALL)
1769 pfctl_print_title("LIMITS:");
1770 for (i = 0; pf_limits[i].name; i++) {
1771 if ((ret = pfctl_get_limit(pfh, pf_limits[i].index, &limit)) != 0)
1772 errc(1, ret, "DIOCGETLIMIT");
1773 printf("%-13s ", pf_limits[i].name);
1774 if (limit == UINT_MAX)
1775 printf("unlimited\n");
1776 else
1777 printf("hard limit %8u\n", limit);
1778 }
1779 return (0);
1780 }
1781
1782 void
pfctl_show_creators(int opts)1783 pfctl_show_creators(int opts)
1784 {
1785 int ret;
1786 uint32_t creators[16];
1787 size_t count = nitems(creators);
1788
1789 ret = pfctl_get_creatorids(pfh, creators, &count);
1790 if (ret != 0)
1791 errx(ret, "Failed to retrieve creators");
1792
1793 printf("Creator IDs:\n");
1794 for (size_t i = 0; i < count; i++)
1795 printf("%08x\n", creators[i]);
1796 }
1797
1798 /* callbacks for rule/nat/rdr/addr */
1799 int
pfctl_add_pool(struct pfctl * pf,struct pfctl_pool * p,int which)1800 pfctl_add_pool(struct pfctl *pf, struct pfctl_pool *p, int which)
1801 {
1802 struct pfctl_pooladdr *pa;
1803 int ret;
1804
1805 TAILQ_FOREACH(pa, &p->list, entries) {
1806 memcpy(&pf->paddr.addr, pa, sizeof(struct pfctl_pooladdr));
1807 pf->paddr.af = pa->af;
1808 if ((pf->opts & PF_OPT_NOACTION) == 0) {
1809 if ((ret = pfctl_add_addr(pf->h, &pf->paddr, which)) != 0)
1810 errc(1, ret, "DIOCADDADDR");
1811 }
1812 }
1813 return (0);
1814 }
1815
1816 void
pfctl_init_rule(struct pfctl_rule * r)1817 pfctl_init_rule(struct pfctl_rule *r)
1818 {
1819 memset(r, 0, sizeof(struct pfctl_rule));
1820 TAILQ_INIT(&(r->rdr.list));
1821 TAILQ_INIT(&(r->nat.list));
1822 TAILQ_INIT(&(r->route.list));
1823 }
1824
1825 int
pfctl_append_rule(struct pfctl * pf,struct pfctl_rule * r,const char * anchor_call)1826 pfctl_append_rule(struct pfctl *pf, struct pfctl_rule *r,
1827 const char *anchor_call)
1828 {
1829 u_int8_t rs_num;
1830 struct pfctl_rule *rule;
1831 struct pfctl_ruleset *rs;
1832 char *p;
1833
1834 rs_num = pf_get_ruleset_number(r->action);
1835 if (rs_num == PF_RULESET_MAX)
1836 errx(1, "Invalid rule type %d", r->action);
1837
1838 rs = &pf->anchor->ruleset;
1839
1840 if (anchor_call[0] && r->anchor == NULL) {
1841 /*
1842 * Don't make non-brace anchors part of the main anchor pool.
1843 */
1844 if ((r->anchor = calloc(1, sizeof(*r->anchor))) == NULL)
1845 err(1, "pfctl_append_rule: calloc");
1846
1847 pf_init_ruleset(&r->anchor->ruleset);
1848 r->anchor->ruleset.anchor = r->anchor;
1849 if (strlcpy(r->anchor->path, anchor_call,
1850 sizeof(rule->anchor->path)) >= sizeof(rule->anchor->path))
1851 errx(1, "pfctl_append_rule: strlcpy");
1852 if ((p = strrchr(anchor_call, '/')) != NULL) {
1853 if (!strlen(p))
1854 err(1, "pfctl_append_rule: bad anchor name %s",
1855 anchor_call);
1856 } else
1857 p = (char *)anchor_call;
1858 if (strlcpy(r->anchor->name, p,
1859 sizeof(rule->anchor->name)) >= sizeof(rule->anchor->name))
1860 errx(1, "pfctl_append_rule: strlcpy");
1861 }
1862
1863 if ((rule = calloc(1, sizeof(*rule))) == NULL)
1864 err(1, "calloc");
1865 bcopy(r, rule, sizeof(*rule));
1866 TAILQ_INIT(&rule->rdr.list);
1867 pfctl_move_pool(&r->rdr, &rule->rdr);
1868 TAILQ_INIT(&rule->nat.list);
1869 pfctl_move_pool(&r->nat, &rule->nat);
1870 TAILQ_INIT(&rule->route.list);
1871 pfctl_move_pool(&r->route, &rule->route);
1872
1873 TAILQ_INSERT_TAIL(rs->rules[rs_num].active.ptr, rule, entries);
1874 return (0);
1875 }
1876
1877 int
pfctl_append_eth_rule(struct pfctl * pf,struct pfctl_eth_rule * r,const char * anchor_call)1878 pfctl_append_eth_rule(struct pfctl *pf, struct pfctl_eth_rule *r,
1879 const char *anchor_call)
1880 {
1881 struct pfctl_eth_rule *rule;
1882 struct pfctl_eth_ruleset *rs;
1883 char *p;
1884
1885 rs = &pf->eanchor->ruleset;
1886
1887 if (anchor_call[0] && r->anchor == NULL) {
1888 /*
1889 * Don't make non-brace anchors part of the main anchor pool.
1890 */
1891 if ((r->anchor = calloc(1, sizeof(*r->anchor))) == NULL)
1892 err(1, "pfctl_append_rule: calloc");
1893
1894 pf_init_eth_ruleset(&r->anchor->ruleset);
1895 r->anchor->ruleset.anchor = r->anchor;
1896 if (strlcpy(r->anchor->path, anchor_call,
1897 sizeof(rule->anchor->path)) >= sizeof(rule->anchor->path))
1898 errx(1, "pfctl_append_rule: strlcpy");
1899 if ((p = strrchr(anchor_call, '/')) != NULL) {
1900 if (!strlen(p))
1901 err(1, "pfctl_append_eth_rule: bad anchor name %s",
1902 anchor_call);
1903 } else
1904 p = (char *)anchor_call;
1905 if (strlcpy(r->anchor->name, p,
1906 sizeof(rule->anchor->name)) >= sizeof(rule->anchor->name))
1907 errx(1, "pfctl_append_eth_rule: strlcpy");
1908 }
1909
1910 if ((rule = calloc(1, sizeof(*rule))) == NULL)
1911 err(1, "calloc");
1912 bcopy(r, rule, sizeof(*rule));
1913
1914 TAILQ_INSERT_TAIL(&rs->rules, rule, entries);
1915 return (0);
1916 }
1917
1918 int
pfctl_eth_ruleset_trans(struct pfctl * pf,char * path,struct pfctl_eth_anchor * a)1919 pfctl_eth_ruleset_trans(struct pfctl *pf, char *path,
1920 struct pfctl_eth_anchor *a)
1921 {
1922 int osize = pf->trans->pfrb_size;
1923
1924 if ((pf->loadopt & PFCTL_FLAG_ETH) != 0) {
1925 if (pfctl_add_trans(pf->trans, PF_RULESET_ETH, path))
1926 return (1);
1927 }
1928 if (pfctl_trans(pf->dev, pf->trans, DIOCXBEGIN, osize))
1929 return (5);
1930
1931 return (0);
1932 }
1933
1934 int
pfctl_ruleset_trans(struct pfctl * pf,char * path,struct pfctl_anchor * a,bool do_eth)1935 pfctl_ruleset_trans(struct pfctl *pf, char *path, struct pfctl_anchor *a, bool do_eth)
1936 {
1937 int osize = pf->trans->pfrb_size;
1938
1939 if ((pf->loadopt & PFCTL_FLAG_ETH) != 0 && do_eth) {
1940 if (pfctl_add_trans(pf->trans, PF_RULESET_ETH, path))
1941 return (1);
1942 }
1943 if ((pf->loadopt & PFCTL_FLAG_NAT) != 0) {
1944 if (pfctl_add_trans(pf->trans, PF_RULESET_NAT, path) ||
1945 pfctl_add_trans(pf->trans, PF_RULESET_BINAT, path) ||
1946 pfctl_add_trans(pf->trans, PF_RULESET_RDR, path))
1947 return (1);
1948 }
1949 if (a == pf->astack[0] && ((altqsupport &&
1950 (pf->loadopt & PFCTL_FLAG_ALTQ) != 0))) {
1951 if (pfctl_add_trans(pf->trans, PF_RULESET_ALTQ, path))
1952 return (2);
1953 }
1954 if ((pf->loadopt & PFCTL_FLAG_FILTER) != 0) {
1955 if (pfctl_add_trans(pf->trans, PF_RULESET_SCRUB, path) ||
1956 pfctl_add_trans(pf->trans, PF_RULESET_FILTER, path))
1957 return (3);
1958 }
1959 if (pf->loadopt & PFCTL_FLAG_TABLE)
1960 if (pfctl_add_trans(pf->trans, PF_RULESET_TABLE, path))
1961 return (4);
1962 if (pfctl_trans(pf->dev, pf->trans, DIOCXBEGIN, osize))
1963 return (5);
1964
1965 return (0);
1966 }
1967
1968 int
pfctl_load_eth_ruleset(struct pfctl * pf,char * path,struct pfctl_eth_ruleset * rs,int depth)1969 pfctl_load_eth_ruleset(struct pfctl *pf, char *path,
1970 struct pfctl_eth_ruleset *rs, int depth)
1971 {
1972 struct pfctl_eth_rule *r;
1973 int error, len = strlen(path);
1974 int brace = 0;
1975
1976 pf->eanchor = rs->anchor;
1977 if (path[0])
1978 snprintf(&path[len], MAXPATHLEN - len, "/%s", pf->eanchor->name);
1979 else
1980 snprintf(&path[len], MAXPATHLEN - len, "%s", pf->eanchor->name);
1981
1982 if (depth) {
1983 if (TAILQ_FIRST(&rs->rules) != NULL) {
1984 brace++;
1985 if (pf->opts & PF_OPT_VERBOSE)
1986 printf(" {\n");
1987 if ((pf->opts & PF_OPT_NOACTION) == 0 &&
1988 (error = pfctl_eth_ruleset_trans(pf,
1989 path, rs->anchor))) {
1990 printf("pfctl_load_eth_rulesets: "
1991 "pfctl_eth_ruleset_trans %d\n", error);
1992 goto error;
1993 }
1994 } else if (pf->opts & PF_OPT_VERBOSE)
1995 printf("\n");
1996 }
1997
1998 while ((r = TAILQ_FIRST(&rs->rules)) != NULL) {
1999 TAILQ_REMOVE(&rs->rules, r, entries);
2000
2001 error = pfctl_load_eth_rule(pf, path, r, depth);
2002 if (error)
2003 return (error);
2004
2005 if (r->anchor) {
2006 if ((error = pfctl_load_eth_ruleset(pf, path,
2007 &r->anchor->ruleset, depth + 1)))
2008 return (error);
2009 } else if (pf->opts & PF_OPT_VERBOSE)
2010 printf("\n");
2011 free(r);
2012 }
2013 if (brace && pf->opts & PF_OPT_VERBOSE) {
2014 INDENT(depth - 1, (pf->opts & PF_OPT_VERBOSE));
2015 printf("}\n");
2016 }
2017 path[len] = '\0';
2018
2019 return (0);
2020 error:
2021 path[len] = '\0';
2022 return (error);
2023 }
2024
2025 int
pfctl_load_eth_rule(struct pfctl * pf,char * path,struct pfctl_eth_rule * r,int depth)2026 pfctl_load_eth_rule(struct pfctl *pf, char *path, struct pfctl_eth_rule *r,
2027 int depth)
2028 {
2029 char *name;
2030 char anchor[PF_ANCHOR_NAME_SIZE];
2031 int len = strlen(path);
2032 int ret;
2033
2034 if (strlcpy(anchor, path, sizeof(anchor)) >= sizeof(anchor))
2035 errx(1, "pfctl_load_eth_rule: strlcpy");
2036
2037 if (r->anchor) {
2038 if (r->anchor->match) {
2039 if (path[0])
2040 snprintf(&path[len], MAXPATHLEN - len,
2041 "/%s", r->anchor->name);
2042 else
2043 snprintf(&path[len], MAXPATHLEN - len,
2044 "%s", r->anchor->name);
2045 name = r->anchor->name;
2046 } else
2047 name = r->anchor->path;
2048 } else
2049 name = "";
2050
2051 if ((pf->opts & PF_OPT_NOACTION) == 0)
2052 if ((ret = pfctl_add_eth_rule(pf->dev, r, anchor, name,
2053 pf->eth_ticket)) != 0)
2054 errc(1, ret, "DIOCADDETHRULENV");
2055
2056 if (pf->opts & PF_OPT_VERBOSE) {
2057 INDENT(depth, !(pf->opts & PF_OPT_VERBOSE2));
2058 print_eth_rule(r, r->anchor ? r->anchor->name : "",
2059 pf->opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG));
2060 }
2061
2062 path[len] = '\0';
2063
2064 return (0);
2065 }
2066
2067 int
pfctl_load_ruleset(struct pfctl * pf,char * path,struct pfctl_ruleset * rs,int rs_num,int depth)2068 pfctl_load_ruleset(struct pfctl *pf, char *path, struct pfctl_ruleset *rs,
2069 int rs_num, int depth)
2070 {
2071 struct pfctl_rule *r;
2072 int error, len = strlen(path);
2073 int brace = 0;
2074
2075 pf->anchor = rs->anchor;
2076
2077 if (path[0])
2078 snprintf(&path[len], MAXPATHLEN - len, "/%s", pf->anchor->name);
2079 else
2080 snprintf(&path[len], MAXPATHLEN - len, "%s", pf->anchor->name);
2081
2082 if (depth) {
2083 if (TAILQ_FIRST(rs->rules[rs_num].active.ptr) != NULL) {
2084 brace++;
2085 if (pf->opts & PF_OPT_VERBOSE)
2086 printf(" {\n");
2087 if ((pf->opts & PF_OPT_NOACTION) == 0 &&
2088 (error = pfctl_ruleset_trans(pf,
2089 path, rs->anchor, false))) {
2090 printf("%s: "
2091 "pfctl_ruleset_trans %d\n", __func__, error);
2092 goto error;
2093 }
2094 } else if (pf->opts & PF_OPT_VERBOSE)
2095 printf("\n");
2096 }
2097
2098 if (pf->optimize && rs_num == PF_RULESET_FILTER)
2099 pfctl_optimize_ruleset(pf, rs);
2100
2101 while ((r = TAILQ_FIRST(rs->rules[rs_num].active.ptr)) != NULL) {
2102 TAILQ_REMOVE(rs->rules[rs_num].active.ptr, r, entries);
2103
2104 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++)
2105 expand_label(r->label[i], PF_RULE_LABEL_SIZE, r);
2106 expand_label(r->tagname, PF_TAG_NAME_SIZE, r);
2107 expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r);
2108
2109 if ((error = pfctl_load_rule(pf, path, r, depth)))
2110 goto error;
2111 if (r->anchor) {
2112 if ((error = pfctl_load_ruleset(pf, path,
2113 &r->anchor->ruleset, rs_num, depth + 1)))
2114 goto error;
2115 } else if (pf->opts & PF_OPT_VERBOSE)
2116 printf("\n");
2117 free(r);
2118 }
2119 if (brace && pf->opts & PF_OPT_VERBOSE) {
2120 INDENT(depth - 1, (pf->opts & PF_OPT_VERBOSE));
2121 printf("}\n");
2122 }
2123 path[len] = '\0';
2124 return (0);
2125
2126 error:
2127 path[len] = '\0';
2128 return (error);
2129
2130 }
2131
2132 int
pfctl_load_rule(struct pfctl * pf,char * path,struct pfctl_rule * r,int depth)2133 pfctl_load_rule(struct pfctl *pf, char *path, struct pfctl_rule *r, int depth)
2134 {
2135 u_int8_t rs_num = pf_get_ruleset_number(r->action);
2136 char *name;
2137 u_int32_t ticket;
2138 char anchor[PF_ANCHOR_NAME_SIZE];
2139 int len = strlen(path);
2140 int error;
2141 bool was_present;
2142
2143 /* set up anchor before adding to path for anchor_call */
2144 if ((pf->opts & PF_OPT_NOACTION) == 0)
2145 ticket = pfctl_get_ticket(pf->trans, rs_num, path);
2146 if (strlcpy(anchor, path, sizeof(anchor)) >= sizeof(anchor))
2147 errx(1, "pfctl_load_rule: strlcpy");
2148
2149 if (r->anchor) {
2150 if (r->anchor->match) {
2151 if (path[0])
2152 snprintf(&path[len], MAXPATHLEN - len,
2153 "/%s", r->anchor->name);
2154 else
2155 snprintf(&path[len], MAXPATHLEN - len,
2156 "%s", r->anchor->name);
2157 name = r->anchor->name;
2158 } else
2159 name = r->anchor->path;
2160 } else
2161 name = "";
2162
2163 was_present = false;
2164 if ((pf->opts & PF_OPT_NOACTION) == 0) {
2165 if ((pf->opts & PF_OPT_NOACTION) == 0) {
2166 if ((error = pfctl_begin_addrs(pf->h,
2167 &pf->paddr.ticket)) != 0)
2168 errc(1, error, "DIOCBEGINADDRS");
2169 }
2170
2171 if (pfctl_add_pool(pf, &r->rdr, PF_RDR))
2172 return (1);
2173 if (pfctl_add_pool(pf, &r->nat, PF_NAT))
2174 return (1);
2175 if (pfctl_add_pool(pf, &r->route, PF_RT))
2176 return (1);
2177 error = pfctl_add_rule_h(pf->h, r, anchor, name, ticket,
2178 pf->paddr.ticket);
2179 switch (error) {
2180 case 0:
2181 /* things worked, do nothing */
2182 break;
2183 case EEXIST:
2184 /* an identical rule is already present */
2185 was_present = true;
2186 break;
2187 default:
2188 errc(1, error, "DIOCADDRULE");
2189 }
2190 }
2191
2192 if (pf->opts & PF_OPT_VERBOSE) {
2193 INDENT(depth, !(pf->opts & PF_OPT_VERBOSE2));
2194 print_rule(r, name,
2195 pf->opts & PF_OPT_VERBOSE2,
2196 pf->opts & PF_OPT_NUMERIC);
2197 if (was_present)
2198 printf(" -- rule was already present");
2199 }
2200 path[len] = '\0';
2201 pfctl_clear_pool(&r->rdr);
2202 pfctl_clear_pool(&r->nat);
2203 return (0);
2204 }
2205
2206 int
pfctl_add_altq(struct pfctl * pf,struct pf_altq * a)2207 pfctl_add_altq(struct pfctl *pf, struct pf_altq *a)
2208 {
2209 if (altqsupport &&
2210 (loadopt & PFCTL_FLAG_ALTQ) != 0) {
2211 memcpy(&pf->paltq->altq, a, sizeof(struct pf_altq));
2212 if ((pf->opts & PF_OPT_NOACTION) == 0) {
2213 if (ioctl(pf->dev, DIOCADDALTQ, pf->paltq)) {
2214 if (errno == ENXIO)
2215 errx(1, "qtype not configured");
2216 else if (errno == ENODEV)
2217 errx(1, "%s: driver does not support "
2218 "altq", a->ifname);
2219 else
2220 err(1, "DIOCADDALTQ");
2221 }
2222 }
2223 pfaltq_store(&pf->paltq->altq);
2224 }
2225 return (0);
2226 }
2227
2228 int
pfctl_rules(int dev,char * filename,int opts,int optimize,char * anchorname,struct pfr_buffer * trans)2229 pfctl_rules(int dev, char *filename, int opts, int optimize,
2230 char *anchorname, struct pfr_buffer *trans)
2231 {
2232 #define ERR(...) do { warn(__VA_ARGS__); goto _error; } while(0)
2233 #define ERRX(...) do { warnx(__VA_ARGS__); goto _error; } while(0)
2234
2235 struct pfr_buffer *t, buf;
2236 struct pfioc_altq pa;
2237 struct pfctl pf;
2238 struct pfctl_ruleset *rs;
2239 struct pfctl_eth_ruleset *ethrs;
2240 struct pfr_table trs;
2241 char *path = NULL;
2242 int osize;
2243
2244 RB_INIT(&pf_anchors);
2245 memset(&pf_main_anchor, 0, sizeof(pf_main_anchor));
2246 pf_init_ruleset(&pf_main_anchor.ruleset);
2247 pf_main_anchor.ruleset.anchor = &pf_main_anchor;
2248
2249 memset(&pf_eth_main_anchor, 0, sizeof(pf_eth_main_anchor));
2250 pf_init_eth_ruleset(&pf_eth_main_anchor.ruleset);
2251 pf_eth_main_anchor.ruleset.anchor = &pf_eth_main_anchor;
2252
2253 if (trans == NULL) {
2254 bzero(&buf, sizeof(buf));
2255 buf.pfrb_type = PFRB_TRANS;
2256 t = &buf;
2257 osize = 0;
2258 } else {
2259 t = trans;
2260 osize = t->pfrb_size;
2261 }
2262
2263 memset(&pa, 0, sizeof(pa));
2264 pa.version = PFIOC_ALTQ_VERSION;
2265 memset(&pf, 0, sizeof(pf));
2266 memset(&trs, 0, sizeof(trs));
2267 if ((path = calloc(1, MAXPATHLEN)) == NULL)
2268 ERRX("%s: calloc", __func__);
2269 if (strlcpy(trs.pfrt_anchor, anchorname,
2270 sizeof(trs.pfrt_anchor)) >= sizeof(trs.pfrt_anchor))
2271 ERRX("%s: strlcpy", __func__);
2272 pf.dev = dev;
2273 pf.h = pfh;
2274 pf.opts = opts;
2275 pf.optimize = optimize;
2276 pf.loadopt = loadopt;
2277
2278 /* non-brace anchor, create without resolving the path */
2279 if ((pf.anchor = calloc(1, sizeof(*pf.anchor))) == NULL)
2280 ERRX("%s: calloc", __func__);
2281 rs = &pf.anchor->ruleset;
2282 pf_init_ruleset(rs);
2283 rs->anchor = pf.anchor;
2284 if (strlcpy(pf.anchor->path, anchorname,
2285 sizeof(pf.anchor->path)) >= sizeof(pf.anchor->path))
2286 errx(1, "%s: strlcpy", __func__);
2287 if (strlcpy(pf.anchor->name, anchorname,
2288 sizeof(pf.anchor->name)) >= sizeof(pf.anchor->name))
2289 errx(1, "%s: strlcpy", __func__);
2290
2291
2292 pf.astack[0] = pf.anchor;
2293 pf.asd = 0;
2294 if (anchorname[0])
2295 pf.loadopt &= ~PFCTL_FLAG_ALTQ;
2296 pf.paltq = &pa;
2297 pf.trans = t;
2298 pfctl_init_options(&pf);
2299
2300 /* Set up ethernet anchor */
2301 if ((pf.eanchor = calloc(1, sizeof(*pf.eanchor))) == NULL)
2302 ERRX("%s: calloc", __func__);
2303
2304 if (strlcpy(pf.eanchor->path, anchorname,
2305 sizeof(pf.eanchor->path)) >= sizeof(pf.eanchor->path))
2306 errx(1, "%s: strlcpy", __func__);
2307 if (strlcpy(pf.eanchor->name, anchorname,
2308 sizeof(pf.eanchor->name)) >= sizeof(pf.eanchor->name))
2309 errx(1, "%s: strlcpy", __func__);
2310
2311 ethrs = &pf.eanchor->ruleset;
2312 pf_init_eth_ruleset(ethrs);
2313 ethrs->anchor = pf.eanchor;
2314 pf.eastack[0] = pf.eanchor;
2315
2316 if ((opts & PF_OPT_NOACTION) == 0) {
2317 /*
2318 * XXX For the time being we need to open transactions for
2319 * the main ruleset before parsing, because tables are still
2320 * loaded at parse time.
2321 */
2322 if (pfctl_ruleset_trans(&pf, anchorname, pf.anchor, true))
2323 ERRX("%s", __func__);
2324 if (pf.loadopt & PFCTL_FLAG_ETH)
2325 pf.eth_ticket = pfctl_get_ticket(t, PF_RULESET_ETH, anchorname);
2326 if (altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ))
2327 pa.ticket =
2328 pfctl_get_ticket(t, PF_RULESET_ALTQ, anchorname);
2329 if (pf.loadopt & PFCTL_FLAG_TABLE)
2330 pf.astack[0]->ruleset.tticket =
2331 pfctl_get_ticket(t, PF_RULESET_TABLE, anchorname);
2332 }
2333
2334 if (parse_config(filename, &pf) < 0) {
2335 if ((opts & PF_OPT_NOACTION) == 0)
2336 ERRX("Syntax error in config file: "
2337 "pf rules not loaded");
2338 else
2339 goto _error;
2340 }
2341 if (loadopt & PFCTL_FLAG_OPTION)
2342 pfctl_adjust_skip_ifaces(&pf);
2343
2344 if ((pf.loadopt & PFCTL_FLAG_FILTER &&
2345 (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_SCRUB, 0))) ||
2346 (pf.loadopt & PFCTL_FLAG_ETH &&
2347 (pfctl_load_eth_ruleset(&pf, path, ethrs, 0))) ||
2348 (pf.loadopt & PFCTL_FLAG_NAT &&
2349 (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_NAT, 0) ||
2350 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_RDR, 0) ||
2351 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_BINAT, 0))) ||
2352 (pf.loadopt & PFCTL_FLAG_FILTER &&
2353 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_FILTER, 0))) {
2354 if ((opts & PF_OPT_NOACTION) == 0)
2355 ERRX("Unable to load rules into kernel");
2356 else
2357 goto _error;
2358 }
2359
2360 if ((altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ) != 0))
2361 if (check_commit_altq(dev, opts) != 0)
2362 ERRX("errors in altq config");
2363
2364 if (trans == NULL) {
2365 /* process "load anchor" directives */
2366 if (pfctl_load_anchors(dev, &pf, t) == -1)
2367 ERRX("load anchors");
2368
2369 if ((opts & PF_OPT_NOACTION) == 0) {
2370 if (!anchorname[0] && pfctl_load_options(&pf))
2371 goto _error;
2372 if (pfctl_trans(dev, t, DIOCXCOMMIT, osize))
2373 ERR("DIOCXCOMMIT");
2374 }
2375 }
2376 free(path);
2377 return (0);
2378
2379 _error:
2380 if (trans == NULL) { /* main ruleset */
2381 if ((opts & PF_OPT_NOACTION) == 0)
2382 if (pfctl_trans(dev, t, DIOCXROLLBACK, osize))
2383 err(1, "DIOCXROLLBACK");
2384 exit(1);
2385 } else { /* sub ruleset */
2386 free(path);
2387 return (-1);
2388 }
2389
2390 #undef ERR
2391 #undef ERRX
2392 }
2393
2394 FILE *
pfctl_fopen(const char * name,const char * mode)2395 pfctl_fopen(const char *name, const char *mode)
2396 {
2397 struct stat st;
2398 FILE *fp;
2399
2400 fp = fopen(name, mode);
2401 if (fp == NULL)
2402 return (NULL);
2403 if (fstat(fileno(fp), &st)) {
2404 fclose(fp);
2405 return (NULL);
2406 }
2407 if (S_ISDIR(st.st_mode)) {
2408 fclose(fp);
2409 errno = EISDIR;
2410 return (NULL);
2411 }
2412 return (fp);
2413 }
2414
2415 void
pfctl_init_options(struct pfctl * pf)2416 pfctl_init_options(struct pfctl *pf)
2417 {
2418
2419 pf->timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL;
2420 pf->timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL;
2421 pf->timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL;
2422 pf->timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL;
2423 pf->timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL;
2424 pf->timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL;
2425 pf->timeout[PFTM_SCTP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL;
2426 pf->timeout[PFTM_SCTP_OPENING] = PFTM_TCP_OPENING_VAL;
2427 pf->timeout[PFTM_SCTP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL;
2428 pf->timeout[PFTM_SCTP_CLOSING] = PFTM_TCP_CLOSING_VAL;
2429 pf->timeout[PFTM_SCTP_CLOSED] = PFTM_TCP_CLOSED_VAL;
2430 pf->timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL;
2431 pf->timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL;
2432 pf->timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL;
2433 pf->timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL;
2434 pf->timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL;
2435 pf->timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL;
2436 pf->timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL;
2437 pf->timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL;
2438 pf->timeout[PFTM_FRAG] = PFTM_FRAG_VAL;
2439 pf->timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL;
2440 pf->timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL;
2441 pf->timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL;
2442 pf->timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START;
2443 pf->timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END;
2444
2445 pf->limit[PF_LIMIT_STATES] = PFSTATE_HIWAT;
2446 pf->limit[PF_LIMIT_FRAGS] = PFFRAG_FRENT_HIWAT;
2447 pf->limit[PF_LIMIT_SRC_NODES] = PFSNODE_HIWAT;
2448 pf->limit[PF_LIMIT_TABLE_ENTRIES] = PFR_KENTRY_HIWAT;
2449
2450 pf->debug = PF_DEBUG_URGENT;
2451 pf->reassemble = 0;
2452
2453 pf->syncookies = false;
2454 pf->syncookieswat[0] = PF_SYNCOOKIES_LOWATPCT;
2455 pf->syncookieswat[1] = PF_SYNCOOKIES_HIWATPCT;
2456 }
2457
2458 int
pfctl_load_options(struct pfctl * pf)2459 pfctl_load_options(struct pfctl *pf)
2460 {
2461 int i, error = 0;
2462
2463 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2464 return (0);
2465
2466 /* load limits */
2467 for (i = 0; i < PF_LIMIT_MAX; i++) {
2468 if ((pf->opts & PF_OPT_MERGE) && !pf->limit_set[i])
2469 continue;
2470 if (pfctl_load_limit(pf, i, pf->limit[i]))
2471 error = 1;
2472 }
2473
2474 /*
2475 * If we've set the states limit, but haven't explicitly set adaptive
2476 * timeouts, do it now with a start of 60% and end of 120%.
2477 */
2478 if (pf->limit_set[PF_LIMIT_STATES] &&
2479 !pf->timeout_set[PFTM_ADAPTIVE_START] &&
2480 !pf->timeout_set[PFTM_ADAPTIVE_END]) {
2481 pf->timeout[PFTM_ADAPTIVE_START] =
2482 (pf->limit[PF_LIMIT_STATES] / 10) * 6;
2483 pf->timeout_set[PFTM_ADAPTIVE_START] = 1;
2484 pf->timeout[PFTM_ADAPTIVE_END] =
2485 (pf->limit[PF_LIMIT_STATES] / 10) * 12;
2486 pf->timeout_set[PFTM_ADAPTIVE_END] = 1;
2487 }
2488
2489 /* load timeouts */
2490 for (i = 0; i < PFTM_MAX; i++) {
2491 if ((pf->opts & PF_OPT_MERGE) && !pf->timeout_set[i])
2492 continue;
2493 if (pfctl_load_timeout(pf, i, pf->timeout[i]))
2494 error = 1;
2495 }
2496
2497 /* load debug */
2498 if (!(pf->opts & PF_OPT_MERGE) || pf->debug_set)
2499 if (pfctl_load_debug(pf, pf->debug))
2500 error = 1;
2501
2502 /* load logif */
2503 if (!(pf->opts & PF_OPT_MERGE) || pf->ifname_set)
2504 if (pfctl_load_logif(pf, pf->ifname))
2505 error = 1;
2506
2507 /* load hostid */
2508 if (!(pf->opts & PF_OPT_MERGE) || pf->hostid_set)
2509 if (pfctl_load_hostid(pf, pf->hostid))
2510 error = 1;
2511
2512 /* load reassembly settings */
2513 if (!(pf->opts & PF_OPT_MERGE) || pf->reass_set)
2514 if (pfctl_load_reassembly(pf, pf->reassemble))
2515 error = 1;
2516
2517 /* load keepcounters */
2518 if (pfctl_set_keepcounters(pf->dev, pf->keep_counters))
2519 error = 1;
2520
2521 /* load syncookies settings */
2522 if (pfctl_load_syncookies(pf, pf->syncookies))
2523 error = 1;
2524
2525 return (error);
2526 }
2527
2528 int
pfctl_apply_limit(struct pfctl * pf,const char * opt,unsigned int limit)2529 pfctl_apply_limit(struct pfctl *pf, const char *opt, unsigned int limit)
2530 {
2531 int i;
2532
2533
2534 for (i = 0; pf_limits[i].name; i++) {
2535 if (strcasecmp(opt, pf_limits[i].name) == 0) {
2536 pf->limit[pf_limits[i].index] = limit;
2537 pf->limit_set[pf_limits[i].index] = 1;
2538 break;
2539 }
2540 }
2541 if (pf_limits[i].name == NULL) {
2542 warnx("Bad pool name.");
2543 return (1);
2544 }
2545
2546 if (pf->opts & PF_OPT_VERBOSE)
2547 printf("set limit %s %d\n", opt, limit);
2548
2549 return (0);
2550 }
2551
2552 int
pfctl_load_limit(struct pfctl * pf,unsigned int index,unsigned int limit)2553 pfctl_load_limit(struct pfctl *pf, unsigned int index, unsigned int limit)
2554 {
2555 if (pfctl_set_limit(pf->h, index, limit)) {
2556 if (errno == EBUSY)
2557 warnx("Current pool size exceeds requested %s limit %u",
2558 pf_limits[index].name, limit);
2559 else
2560 warnx("Cannot set %s limit to %u",
2561 pf_limits[index].name, limit);
2562 return (1);
2563 }
2564 return (0);
2565 }
2566
2567 int
pfctl_apply_timeout(struct pfctl * pf,const char * opt,int seconds,int quiet)2568 pfctl_apply_timeout(struct pfctl *pf, const char *opt, int seconds, int quiet)
2569 {
2570 int i;
2571
2572 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2573 return (0);
2574
2575 for (i = 0; pf_timeouts[i].name; i++) {
2576 if (strcasecmp(opt, pf_timeouts[i].name) == 0) {
2577 pf->timeout[pf_timeouts[i].timeout] = seconds;
2578 pf->timeout_set[pf_timeouts[i].timeout] = 1;
2579 break;
2580 }
2581 }
2582
2583 if (pf_timeouts[i].name == NULL) {
2584 warnx("Bad timeout name.");
2585 return (1);
2586 }
2587
2588
2589 if (pf->opts & PF_OPT_VERBOSE && ! quiet)
2590 printf("set timeout %s %d\n", opt, seconds);
2591
2592 return (0);
2593 }
2594
2595 int
pfctl_load_timeout(struct pfctl * pf,unsigned int timeout,unsigned int seconds)2596 pfctl_load_timeout(struct pfctl *pf, unsigned int timeout, unsigned int seconds)
2597 {
2598 if (pfctl_set_timeout(pf->h, timeout, seconds)) {
2599 warnx("DIOCSETTIMEOUT");
2600 return (1);
2601 }
2602 return (0);
2603 }
2604
2605 int
pfctl_set_reassembly(struct pfctl * pf,int on,int nodf)2606 pfctl_set_reassembly(struct pfctl *pf, int on, int nodf)
2607 {
2608 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2609 return (0);
2610
2611 pf->reass_set = 1;
2612 if (on) {
2613 pf->reassemble = PF_REASS_ENABLED;
2614 if (nodf)
2615 pf->reassemble |= PF_REASS_NODF;
2616 } else {
2617 pf->reassemble = 0;
2618 }
2619
2620 if (pf->opts & PF_OPT_VERBOSE)
2621 printf("set reassemble %s %s\n", on ? "yes" : "no",
2622 nodf ? "no-df" : "");
2623
2624 return (0);
2625 }
2626
2627 int
pfctl_set_optimization(struct pfctl * pf,const char * opt)2628 pfctl_set_optimization(struct pfctl *pf, const char *opt)
2629 {
2630 const struct pf_hint *hint;
2631 int i, r;
2632
2633 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2634 return (0);
2635
2636 for (i = 0; pf_hints[i].name; i++)
2637 if (strcasecmp(opt, pf_hints[i].name) == 0)
2638 break;
2639
2640 hint = pf_hints[i].hint;
2641 if (hint == NULL) {
2642 warnx("invalid state timeouts optimization");
2643 return (1);
2644 }
2645
2646 for (i = 0; hint[i].name; i++)
2647 if ((r = pfctl_apply_timeout(pf, hint[i].name,
2648 hint[i].timeout, 1)))
2649 return (r);
2650
2651 if (pf->opts & PF_OPT_VERBOSE)
2652 printf("set optimization %s\n", opt);
2653
2654 return (0);
2655 }
2656
2657 int
pfctl_set_logif(struct pfctl * pf,char * ifname)2658 pfctl_set_logif(struct pfctl *pf, char *ifname)
2659 {
2660
2661 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2662 return (0);
2663
2664 if (!strcmp(ifname, "none")) {
2665 free(pf->ifname);
2666 pf->ifname = NULL;
2667 } else {
2668 pf->ifname = strdup(ifname);
2669 if (!pf->ifname)
2670 errx(1, "pfctl_set_logif: strdup");
2671 }
2672 pf->ifname_set = 1;
2673
2674 if (pf->opts & PF_OPT_VERBOSE)
2675 printf("set loginterface %s\n", ifname);
2676
2677 return (0);
2678 }
2679
2680 int
pfctl_load_logif(struct pfctl * pf,char * ifname)2681 pfctl_load_logif(struct pfctl *pf, char *ifname)
2682 {
2683 if (ifname != NULL && strlen(ifname) >= IFNAMSIZ) {
2684 warnx("pfctl_load_logif: strlcpy");
2685 return (1);
2686 }
2687 return (pfctl_set_statusif(pfh, ifname ? ifname : ""));
2688 }
2689
2690 void
pfctl_set_hostid(struct pfctl * pf,u_int32_t hostid)2691 pfctl_set_hostid(struct pfctl *pf, u_int32_t hostid)
2692 {
2693 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2694 return;
2695
2696 HTONL(hostid);
2697
2698 pf->hostid = hostid;
2699 pf->hostid_set = 1;
2700
2701 if (pf->opts & PF_OPT_VERBOSE)
2702 printf("set hostid 0x%08x\n", ntohl(hostid));
2703 }
2704
2705 int
pfctl_load_hostid(struct pfctl * pf,u_int32_t hostid)2706 pfctl_load_hostid(struct pfctl *pf, u_int32_t hostid)
2707 {
2708 if (ioctl(dev, DIOCSETHOSTID, &hostid)) {
2709 warnx("DIOCSETHOSTID");
2710 return (1);
2711 }
2712 return (0);
2713 }
2714
2715 int
pfctl_load_reassembly(struct pfctl * pf,u_int32_t reassembly)2716 pfctl_load_reassembly(struct pfctl *pf, u_int32_t reassembly)
2717 {
2718 if (ioctl(dev, DIOCSETREASS, &reassembly)) {
2719 warnx("DIOCSETREASS");
2720 return (1);
2721 }
2722 return (0);
2723 }
2724
2725 int
pfctl_load_syncookies(struct pfctl * pf,u_int8_t val)2726 pfctl_load_syncookies(struct pfctl *pf, u_int8_t val)
2727 {
2728 struct pfctl_syncookies cookies;
2729
2730 bzero(&cookies, sizeof(cookies));
2731
2732 cookies.mode = val;
2733 cookies.lowwater = pf->syncookieswat[0];
2734 cookies.highwater = pf->syncookieswat[1];
2735
2736 if (pfctl_set_syncookies(dev, &cookies)) {
2737 warnx("DIOCSETSYNCOOKIES");
2738 return (1);
2739 }
2740 return (0);
2741 }
2742
2743 int
pfctl_cfg_syncookies(struct pfctl * pf,uint8_t val,struct pfctl_watermarks * w)2744 pfctl_cfg_syncookies(struct pfctl *pf, uint8_t val, struct pfctl_watermarks *w)
2745 {
2746 if (val != PF_SYNCOOKIES_ADAPTIVE && w != NULL) {
2747 warnx("syncookies start/end only apply to adaptive");
2748 return (1);
2749 }
2750 if (val == PF_SYNCOOKIES_ADAPTIVE && w != NULL) {
2751 if (!w->hi)
2752 w->hi = PF_SYNCOOKIES_HIWATPCT;
2753 if (!w->lo)
2754 w->lo = w->hi / 2;
2755 if (w->lo >= w->hi) {
2756 warnx("start must be higher than end");
2757 return (1);
2758 }
2759 pf->syncookieswat[0] = w->lo;
2760 pf->syncookieswat[1] = w->hi;
2761 pf->syncookieswat_set = 1;
2762 }
2763
2764 if (pf->opts & PF_OPT_VERBOSE) {
2765 if (val == PF_SYNCOOKIES_NEVER)
2766 printf("set syncookies never\n");
2767 else if (val == PF_SYNCOOKIES_ALWAYS)
2768 printf("set syncookies always\n");
2769 else if (val == PF_SYNCOOKIES_ADAPTIVE) {
2770 if (pf->syncookieswat_set)
2771 printf("set syncookies adaptive (start %u%%, "
2772 "end %u%%)\n", pf->syncookieswat[1],
2773 pf->syncookieswat[0]);
2774 else
2775 printf("set syncookies adaptive\n");
2776 } else { /* cannot happen */
2777 warnx("king bula ate all syncookies");
2778 return (1);
2779 }
2780 }
2781
2782 pf->syncookies = val;
2783 return (0);
2784 }
2785
2786 int
pfctl_do_set_debug(struct pfctl * pf,char * d)2787 pfctl_do_set_debug(struct pfctl *pf, char *d)
2788 {
2789 u_int32_t level;
2790 int ret;
2791
2792 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2793 return (0);
2794
2795 if (!strcmp(d, "none"))
2796 pf->debug = PF_DEBUG_NONE;
2797 else if (!strcmp(d, "urgent"))
2798 pf->debug = PF_DEBUG_URGENT;
2799 else if (!strcmp(d, "misc"))
2800 pf->debug = PF_DEBUG_MISC;
2801 else if (!strcmp(d, "loud"))
2802 pf->debug = PF_DEBUG_NOISY;
2803 else {
2804 warnx("unknown debug level \"%s\"", d);
2805 return (-1);
2806 }
2807
2808 pf->debug_set = 1;
2809 level = pf->debug;
2810
2811 if ((pf->opts & PF_OPT_NOACTION) == 0)
2812 if ((ret = pfctl_set_debug(pfh, level)) != 0)
2813 errc(1, ret, "DIOCSETDEBUG");
2814
2815 if (pf->opts & PF_OPT_VERBOSE)
2816 printf("set debug %s\n", d);
2817
2818 return (0);
2819 }
2820
2821 int
pfctl_load_debug(struct pfctl * pf,unsigned int level)2822 pfctl_load_debug(struct pfctl *pf, unsigned int level)
2823 {
2824 if (pfctl_set_debug(pf->h, level)) {
2825 warnx("DIOCSETDEBUG");
2826 return (1);
2827 }
2828 return (0);
2829 }
2830
2831 int
pfctl_set_interface_flags(struct pfctl * pf,char * ifname,int flags,int how)2832 pfctl_set_interface_flags(struct pfctl *pf, char *ifname, int flags, int how)
2833 {
2834 struct pfioc_iface pi;
2835 struct node_host *h = NULL, *n = NULL;
2836
2837 if ((loadopt & PFCTL_FLAG_OPTION) == 0)
2838 return (0);
2839
2840 bzero(&pi, sizeof(pi));
2841
2842 pi.pfiio_flags = flags;
2843
2844 /* Make sure our cache matches the kernel. If we set or clear the flag
2845 * for a group this applies to all members. */
2846 h = ifa_grouplookup(ifname, 0);
2847 for (n = h; n != NULL; n = n->next)
2848 pfctl_set_interface_flags(pf, n->ifname, flags, how);
2849
2850 if (strlcpy(pi.pfiio_name, ifname, sizeof(pi.pfiio_name)) >=
2851 sizeof(pi.pfiio_name))
2852 errx(1, "pfctl_set_interface_flags: strlcpy");
2853
2854 if ((pf->opts & PF_OPT_NOACTION) == 0) {
2855 if (how == 0) {
2856 if (ioctl(pf->dev, DIOCCLRIFFLAG, &pi))
2857 pfctl_err(pf->opts, 1, "DIOCCLRIFFLAG");
2858 } else {
2859 if (ioctl(pf->dev, DIOCSETIFFLAG, &pi))
2860 err(1, "DIOCSETIFFLAG");
2861 pfctl_check_skip_ifaces(ifname);
2862 }
2863 }
2864 return (0);
2865 }
2866
2867 void
pfctl_debug(int dev,u_int32_t level,int opts)2868 pfctl_debug(int dev, u_int32_t level, int opts)
2869 {
2870 int ret;
2871
2872 if ((ret = pfctl_set_debug(pfh, level)) != 0)
2873 errc(1, ret, "DIOCSETDEBUG");
2874 if ((opts & PF_OPT_QUIET) == 0) {
2875 fprintf(stderr, "debug level set to '");
2876 switch (level) {
2877 case PF_DEBUG_NONE:
2878 fprintf(stderr, "none");
2879 break;
2880 case PF_DEBUG_URGENT:
2881 fprintf(stderr, "urgent");
2882 break;
2883 case PF_DEBUG_MISC:
2884 fprintf(stderr, "misc");
2885 break;
2886 case PF_DEBUG_NOISY:
2887 fprintf(stderr, "loud");
2888 break;
2889 default:
2890 fprintf(stderr, "<invalid>");
2891 break;
2892 }
2893 fprintf(stderr, "'\n");
2894 }
2895 }
2896
2897 int
pfctl_test_altqsupport(int dev,int opts)2898 pfctl_test_altqsupport(int dev, int opts)
2899 {
2900 struct pfioc_altq pa;
2901
2902 pa.version = PFIOC_ALTQ_VERSION;
2903 if (ioctl(dev, DIOCGETALTQS, &pa)) {
2904 if (errno == ENODEV) {
2905 if (opts & PF_OPT_VERBOSE)
2906 fprintf(stderr, "No ALTQ support in kernel\n"
2907 "ALTQ related functions disabled\n");
2908 return (0);
2909 } else
2910 err(1, "DIOCGETALTQS");
2911 }
2912 return (1);
2913 }
2914
2915 int
pfctl_walk_show(int opts,struct pfioc_ruleset * pr,void * warg)2916 pfctl_walk_show(int opts, struct pfioc_ruleset *pr, void *warg)
2917 {
2918 if (pr->path[0]) {
2919 if (pr->path[0] != '_' || (opts & PF_OPT_VERBOSE))
2920 printf(" %s/%s\n", pr->path, pr->name);
2921 } else if (pr->name[0] != '_' || (opts & PF_OPT_VERBOSE))
2922 printf(" %s\n", pr->name);
2923
2924 return (0);
2925 }
2926
2927 int
pfctl_walk_get(int opts,struct pfioc_ruleset * pr,void * warg)2928 pfctl_walk_get(int opts, struct pfioc_ruleset *pr, void *warg)
2929 {
2930 struct pfr_anchoritem *pfra;
2931 struct pfr_anchors *anchors;
2932 int e;
2933
2934 anchors = (struct pfr_anchors *)warg;
2935
2936 pfra = malloc(sizeof(*pfra));
2937 if (pfra == NULL)
2938 err(1, "%s", __func__);
2939
2940 if (pr->path[0])
2941 e = asprintf(&pfra->pfra_anchorname, "%s/%s", pr->path,
2942 pr->name);
2943 else
2944 e = asprintf(&pfra->pfra_anchorname, "%s", pr->name);
2945
2946 if (e == -1)
2947 err(1, "%s", __func__);
2948
2949 SLIST_INSERT_HEAD(anchors, pfra, pfra_sle);
2950
2951 return (0);
2952 }
2953
2954 int
pfctl_walk_anchors(int dev,int opts,const char * anchor,int (walkf)(int,struct pfioc_ruleset *,void *),void * warg)2955 pfctl_walk_anchors(int dev, int opts, const char *anchor,
2956 int(walkf)(int, struct pfioc_ruleset *, void *), void *warg)
2957 {
2958 struct pfioc_ruleset pr;
2959 u_int32_t mnr, nr;
2960 int ret;
2961
2962 memset(&pr, 0, sizeof(pr));
2963 if ((ret = pfctl_get_rulesets(pfh, anchor, &mnr)) != 0)
2964 errx(1, "%s", pf_strerror(ret));
2965 for (nr = 0; nr < mnr; ++nr) {
2966 char sub[MAXPATHLEN];
2967
2968 if ((ret = pfctl_get_ruleset(pfh, anchor, nr, &pr)) != 0)
2969 errc(1, ret, "DIOCGETRULESET");
2970 if (!strcmp(pr.name, PF_RESERVED_ANCHOR))
2971 continue;
2972 sub[0] = '\0';
2973 if (walkf(opts, &pr, warg))
2974 return (-1);
2975
2976 if (pr.path[0])
2977 snprintf(sub, sizeof(sub), "%s/%s", pr.path, pr.name);
2978 else
2979 snprintf(sub, sizeof(sub), "%s", pr.name);
2980 if (pfctl_walk_anchors(dev, opts, sub, walkf, warg))
2981 return (-1);
2982 }
2983 return (0);
2984 }
2985
2986 int
pfctl_show_anchors(int dev,int opts,char * anchor)2987 pfctl_show_anchors(int dev, int opts, char *anchor)
2988 {
2989 return (
2990 pfctl_walk_anchors(dev, opts, anchor, pfctl_walk_show, NULL));
2991 }
2992
2993 struct pfr_anchors *
pfctl_get_anchors(int dev,const char * anchor,int opts)2994 pfctl_get_anchors(int dev, const char *anchor, int opts)
2995 {
2996 struct pfioc_ruleset pr;
2997 static struct pfr_anchors anchors;
2998 char anchorbuf[PATH_MAX];
2999 char *n;
3000
3001 SLIST_INIT(&anchors);
3002
3003 memset(&pr, 0, sizeof(pr));
3004 if (*anchor != '\0') {
3005 strlcpy(anchorbuf, anchor, sizeof(anchorbuf));
3006 n = dirname(anchorbuf);
3007 if (n[0] != '.' && n[1] != '\0')
3008 strlcpy(pr.path, n, sizeof(pr.path));
3009 strlcpy(anchorbuf, anchor, sizeof(anchorbuf));
3010 n = basename(anchorbuf);
3011 if (n != NULL)
3012 strlcpy(pr.name, n, sizeof(pr.name));
3013 }
3014
3015 /* insert a root anchor first. */
3016 pfctl_walk_get(opts, &pr, &anchors);
3017
3018 if (pfctl_walk_anchors(dev, opts, anchor, pfctl_walk_get, &anchors))
3019 errx(1, "%s failed to retrieve list of anchors, can't continue",
3020 __func__);
3021
3022 return (&anchors);
3023 }
3024
3025 int
pfctl_call_cleartables(int dev,int opts,struct pfr_anchoritem * pfra)3026 pfctl_call_cleartables(int dev, int opts, struct pfr_anchoritem *pfra)
3027 {
3028 /*
3029 * PF_OPT_QUIET makes pfctl_clear_tables() to stop printing number of
3030 * tables cleared for given anchor.
3031 */
3032 opts |= PF_OPT_QUIET;
3033 return ((pfctl_do_clear_tables(pfra->pfra_anchorname, opts) == -1) ?
3034 1 : 0);
3035 }
3036
3037 int
pfctl_call_clearrules(int dev,int opts,struct pfr_anchoritem * pfra)3038 pfctl_call_clearrules(int dev, int opts, struct pfr_anchoritem *pfra)
3039 {
3040 /*
3041 * PF_OPT_QUIET makes pfctl_clear_rules() to stop printing a 'rules
3042 * cleared' message for every anchor it deletes.
3043 */
3044 opts |= PF_OPT_QUIET;
3045 return (pfctl_flush_rules(dev, opts, pfra->pfra_anchorname));
3046 }
3047
3048 int
pfctl_call_clearanchors(int dev,int opts,struct pfr_anchoritem * pfra)3049 pfctl_call_clearanchors(int dev, int opts, struct pfr_anchoritem *pfra)
3050 {
3051 int rv = 0;
3052
3053 rv |= pfctl_call_cleartables(dev, opts, pfra);
3054 rv |= pfctl_call_clearrules(dev, opts, pfra);
3055
3056 return (rv);
3057 }
3058
3059 int
pfctl_recurse(int dev,int opts,const char * anchorname,int (* walkf)(int,int,struct pfr_anchoritem *))3060 pfctl_recurse(int dev, int opts, const char *anchorname,
3061 int(*walkf)(int, int, struct pfr_anchoritem *))
3062 {
3063 int rv = 0;
3064 struct pfr_anchors *anchors;
3065 struct pfr_anchoritem *pfra, *pfra_save;
3066
3067 anchors = pfctl_get_anchors(dev, anchorname, opts);
3068 /*
3069 * While traversing the list, pfctl_clear_*() must always return
3070 * so that failures on one anchor do not prevent clearing others.
3071 */
3072 opts |= PF_OPT_IGNFAIL;
3073 printf("Removing:\n");
3074 SLIST_FOREACH_SAFE(pfra, anchors, pfra_sle, pfra_save) {
3075 printf(" %s\n",
3076 (*pfra->pfra_anchorname == '\0') ? "/" :
3077 pfra->pfra_anchorname);
3078 rv |= walkf(dev, opts, pfra);
3079 SLIST_REMOVE(anchors, pfra, pfr_anchoritem, pfra_sle);
3080 free(pfra->pfra_anchorname);
3081 free(pfra);
3082 }
3083
3084 return (rv);
3085 }
3086
3087 int
pfctl_show_eth_anchors(int dev,int opts,char * anchorname)3088 pfctl_show_eth_anchors(int dev, int opts, char *anchorname)
3089 {
3090 struct pfctl_eth_rulesets_info ri;
3091 struct pfctl_eth_ruleset_info rs;
3092 int ret;
3093
3094 if ((ret = pfctl_get_eth_rulesets_info(dev, &ri, anchorname)) != 0) {
3095 if (ret == ENOENT)
3096 fprintf(stderr, "Anchor '%s' not found.\n",
3097 anchorname);
3098 else
3099 errc(1, ret, "DIOCGETETHRULESETS");
3100 return (-1);
3101 }
3102
3103 for (int nr = 0; nr < ri.nr; nr++) {
3104 char sub[MAXPATHLEN];
3105
3106 if ((ret = pfctl_get_eth_ruleset(dev, anchorname, nr, &rs)) != 0)
3107 errc(1, ret, "DIOCGETETHRULESET");
3108
3109 if (!strcmp(rs.name, PF_RESERVED_ANCHOR))
3110 continue;
3111 sub[0] = 0;
3112 if (rs.path[0]) {
3113 strlcat(sub, rs.path, sizeof(sub));
3114 strlcat(sub, "/", sizeof(sub));
3115 }
3116 strlcat(sub, rs.name, sizeof(sub));
3117 if (sub[0] != '_' || (opts & PF_OPT_VERBOSE))
3118 printf(" %s\n", sub);
3119 if ((opts & PF_OPT_VERBOSE) && pfctl_show_eth_anchors(dev, opts, sub))
3120 return (-1);
3121 }
3122 return (0);
3123 }
3124
3125 const char *
pfctl_lookup_option(char * cmd,const char * const * list)3126 pfctl_lookup_option(char *cmd, const char * const *list)
3127 {
3128 if (cmd != NULL && *cmd)
3129 for (; *list; list++)
3130 if (!strncmp(cmd, *list, strlen(cmd)))
3131 return (*list);
3132 return (NULL);
3133 }
3134
3135 void
pfctl_reset(int dev,int opts)3136 pfctl_reset(int dev, int opts)
3137 {
3138 struct pfctl pf;
3139 struct pfr_buffer t;
3140 int i;
3141
3142 memset(&pf, 0, sizeof(pf));
3143 pf.dev = dev;
3144 pf.h = pfh;
3145 pfctl_init_options(&pf);
3146
3147 /* Force reset upon pfctl_load_options() */
3148 pf.debug_set = 1;
3149 pf.reass_set = 1;
3150 pf.syncookieswat_set = 1;
3151 pf.ifname = strdup("none");
3152 if (pf.ifname == NULL)
3153 err(1, "%s: strdup", __func__);
3154 pf.ifname_set = 1;
3155
3156 memset(&t, 0, sizeof(t));
3157 t.pfrb_type = PFRB_TRANS;
3158 if (pfctl_trans(dev, &t, DIOCXBEGIN, 0))
3159 err(1, "%s: DIOCXBEGIN", __func__);
3160
3161 for (i = 0; pf_limits[i].name; i++)
3162 pf.limit_set[pf_limits[i].index] = 1;
3163
3164 for (i = 0; pf_timeouts[i].name; i++)
3165 pf.timeout_set[pf_timeouts[i].timeout] = 1;
3166
3167 pfctl_load_options(&pf);
3168
3169 if (pfctl_trans(dev, &t, DIOCXCOMMIT, 0))
3170 err(1, "%s: DIOCXCOMMIT", __func__);
3171
3172 pfctl_clear_interface_flags(dev, opts);
3173 }
3174
3175 int
main(int argc,char * argv[])3176 main(int argc, char *argv[])
3177 {
3178 int ch;
3179 int mode = O_RDONLY;
3180 int opts = 0;
3181 int optimize = PF_OPTIMIZE_BASIC;
3182 char anchorname[MAXPATHLEN];
3183 char *path;
3184
3185 if (argc < 2)
3186 usage();
3187
3188 while ((ch = getopt(argc, argv,
3189 "a:AdD:eqf:F:ghi:k:K:mMnNOo:Pp:rRs:St:T:vx:z")) != -1) {
3190 switch (ch) {
3191 case 'a':
3192 anchoropt = optarg;
3193 break;
3194 case 'd':
3195 opts |= PF_OPT_DISABLE;
3196 mode = O_RDWR;
3197 break;
3198 case 'D':
3199 if (pfctl_cmdline_symset(optarg) < 0)
3200 warnx("could not parse macro definition %s",
3201 optarg);
3202 break;
3203 case 'e':
3204 opts |= PF_OPT_ENABLE;
3205 mode = O_RDWR;
3206 break;
3207 case 'q':
3208 opts |= PF_OPT_QUIET;
3209 break;
3210 case 'F':
3211 clearopt = pfctl_lookup_option(optarg, clearopt_list);
3212 if (clearopt == NULL) {
3213 warnx("Unknown flush modifier '%s'", optarg);
3214 usage();
3215 }
3216 mode = O_RDWR;
3217 break;
3218 case 'i':
3219 ifaceopt = optarg;
3220 break;
3221 case 'k':
3222 if (state_killers >= 2) {
3223 warnx("can only specify -k twice");
3224 usage();
3225 /* NOTREACHED */
3226 }
3227 state_kill[state_killers++] = optarg;
3228 mode = O_RDWR;
3229 break;
3230 case 'K':
3231 if (src_node_killers >= 2) {
3232 warnx("can only specify -K twice");
3233 usage();
3234 /* NOTREACHED */
3235 }
3236 src_node_kill[src_node_killers++] = optarg;
3237 mode = O_RDWR;
3238 break;
3239 case 'm':
3240 opts |= PF_OPT_MERGE;
3241 break;
3242 case 'M':
3243 opts |= PF_OPT_KILLMATCH;
3244 break;
3245 case 'n':
3246 opts |= PF_OPT_NOACTION;
3247 break;
3248 case 'N':
3249 loadopt |= PFCTL_FLAG_NAT;
3250 break;
3251 case 'r':
3252 opts |= PF_OPT_USEDNS;
3253 break;
3254 case 'f':
3255 rulesopt = optarg;
3256 mode = O_RDWR;
3257 break;
3258 case 'g':
3259 opts |= PF_OPT_DEBUG;
3260 break;
3261 case 'A':
3262 loadopt |= PFCTL_FLAG_ALTQ;
3263 break;
3264 case 'R':
3265 loadopt |= PFCTL_FLAG_FILTER;
3266 break;
3267 case 'o':
3268 optiopt = pfctl_lookup_option(optarg, optiopt_list);
3269 if (optiopt == NULL) {
3270 warnx("Unknown optimization '%s'", optarg);
3271 usage();
3272 }
3273 opts |= PF_OPT_OPTIMIZE;
3274 break;
3275 case 'O':
3276 loadopt |= PFCTL_FLAG_OPTION;
3277 break;
3278 case 'p':
3279 pf_device = optarg;
3280 break;
3281 case 'P':
3282 opts |= PF_OPT_NUMERIC;
3283 break;
3284 case 's':
3285 showopt = pfctl_lookup_option(optarg, showopt_list);
3286 if (showopt == NULL) {
3287 warnx("Unknown show modifier '%s'", optarg);
3288 usage();
3289 }
3290 break;
3291 case 'S':
3292 opts |= PF_OPT_NODNS;
3293 break;
3294 case 't':
3295 tableopt = optarg;
3296 break;
3297 case 'T':
3298 tblcmdopt = pfctl_lookup_option(optarg, tblcmdopt_list);
3299 if (tblcmdopt == NULL) {
3300 warnx("Unknown table command '%s'", optarg);
3301 usage();
3302 }
3303 break;
3304 case 'v':
3305 if (opts & PF_OPT_VERBOSE)
3306 opts |= PF_OPT_VERBOSE2;
3307 opts |= PF_OPT_VERBOSE;
3308 break;
3309 case 'x':
3310 debugopt = pfctl_lookup_option(optarg, debugopt_list);
3311 if (debugopt == NULL) {
3312 warnx("Unknown debug level '%s'", optarg);
3313 usage();
3314 }
3315 mode = O_RDWR;
3316 break;
3317 case 'z':
3318 opts |= PF_OPT_CLRRULECTRS;
3319 mode = O_RDWR;
3320 break;
3321 case 'h':
3322 /* FALLTHROUGH */
3323 default:
3324 usage();
3325 /* NOTREACHED */
3326 }
3327 }
3328
3329 if ((opts & PF_OPT_NODNS) && (opts & PF_OPT_USEDNS))
3330 errx(1, "-N and -r are mutually exclusive");
3331
3332 if ((tblcmdopt == NULL) ^ (tableopt == NULL))
3333 usage();
3334
3335 if (tblcmdopt != NULL) {
3336 argc -= optind;
3337 argv += optind;
3338 ch = *tblcmdopt;
3339 if (ch == 'l') {
3340 loadopt |= PFCTL_FLAG_TABLE;
3341 tblcmdopt = NULL;
3342 } else
3343 mode = strchr("st", ch) ? O_RDONLY : O_RDWR;
3344 } else if (argc != optind) {
3345 warnx("unknown command line argument: %s ...", argv[optind]);
3346 usage();
3347 /* NOTREACHED */
3348 }
3349 if (loadopt == 0)
3350 loadopt = ~0;
3351
3352 memset(anchorname, 0, sizeof(anchorname));
3353 if (anchoropt != NULL) {
3354 int len = strlen(anchoropt);
3355
3356 if (anchoropt[0] == '\0')
3357 errx(1, "anchor name must not be empty");
3358 if (mode == O_RDONLY && showopt == NULL && tblcmdopt == NULL) {
3359 warnx("anchors apply to -f, -F, -s, and -T only");
3360 usage();
3361 }
3362 if (mode == O_RDWR && tblcmdopt == NULL &&
3363 (anchoropt[0] == '_' || strstr(anchoropt, "/_") != NULL))
3364 errx(1, "anchor names beginning with '_' cannot "
3365 "be modified from the command line");
3366
3367 if (len >= 1 && anchoropt[len - 1] == '*') {
3368 if (len >= 2 && anchoropt[len - 2] == '/')
3369 anchoropt[len - 2] = '\0';
3370 else
3371 anchoropt[len - 1] = '\0';
3372 opts |= PF_OPT_RECURSE;
3373 }
3374 if (strlcpy(anchorname, anchoropt,
3375 sizeof(anchorname)) >= sizeof(anchorname))
3376 errx(1, "anchor name '%s' too long",
3377 anchoropt);
3378 loadopt &= PFCTL_FLAG_FILTER|PFCTL_FLAG_NAT|PFCTL_FLAG_TABLE|PFCTL_FLAG_ETH;
3379 }
3380
3381 if ((opts & PF_OPT_NOACTION) == 0) {
3382 dev = open(pf_device, mode);
3383 if (dev == -1)
3384 err(1, "%s", pf_device);
3385 altqsupport = pfctl_test_altqsupport(dev, opts);
3386 } else {
3387 dev = open(pf_device, O_RDONLY);
3388 if (dev >= 0)
3389 opts |= PF_OPT_DUMMYACTION;
3390 /* turn off options */
3391 opts &= ~ (PF_OPT_DISABLE | PF_OPT_ENABLE);
3392 clearopt = showopt = debugopt = NULL;
3393 #if !defined(ENABLE_ALTQ)
3394 altqsupport = 0;
3395 #else
3396 altqsupport = 1;
3397 #endif
3398 }
3399 pfh = pfctl_open(pf_device);
3400 if (pfh == NULL)
3401 err(1, "Failed to open netlink");
3402
3403 if (opts & PF_OPT_DISABLE)
3404 if (pfctl_disable(dev, opts))
3405 exit_val = 1;
3406
3407 if ((path = calloc(1, MAXPATHLEN)) == NULL)
3408 errx(1, "%s: calloc", __func__);
3409
3410 if (showopt != NULL) {
3411 switch (*showopt) {
3412 case 'A':
3413 pfctl_show_anchors(dev, opts, anchorname);
3414 if (opts & PF_OPT_VERBOSE2)
3415 printf("Ethernet:\n");
3416 pfctl_show_eth_anchors(dev, opts, anchorname);
3417 break;
3418 case 'r':
3419 pfctl_load_fingerprints(dev, opts);
3420 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_RULES,
3421 anchorname, 0, 0);
3422 break;
3423 case 'l':
3424 pfctl_load_fingerprints(dev, opts);
3425 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_LABELS,
3426 anchorname, 0, 0);
3427 break;
3428 case 'n':
3429 pfctl_load_fingerprints(dev, opts);
3430 pfctl_show_nat(dev, path, opts, anchorname, 0, 0);
3431 break;
3432 case 'q':
3433 pfctl_show_altq(dev, ifaceopt, opts,
3434 opts & PF_OPT_VERBOSE2);
3435 break;
3436 case 's':
3437 pfctl_show_states(dev, ifaceopt, opts);
3438 break;
3439 case 'S':
3440 pfctl_show_src_nodes(dev, opts);
3441 break;
3442 case 'i':
3443 pfctl_show_status(dev, opts);
3444 break;
3445 case 'R':
3446 exit_val = pfctl_show_running(dev);
3447 break;
3448 case 't':
3449 pfctl_show_timeouts(dev, opts);
3450 break;
3451 case 'm':
3452 pfctl_show_limits(dev, opts);
3453 break;
3454 case 'e':
3455 pfctl_show_eth_rules(dev, path, opts, 0, anchorname, 0,
3456 0);
3457 break;
3458 case 'a':
3459 opts |= PF_OPT_SHOWALL;
3460 pfctl_load_fingerprints(dev, opts);
3461
3462 pfctl_show_eth_rules(dev, path, opts, 0, anchorname, 0,
3463 0);
3464
3465 pfctl_show_nat(dev, path, opts, anchorname, 0, 0);
3466 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_RULES,
3467 anchorname, 0, 0);
3468 pfctl_show_altq(dev, ifaceopt, opts, 0);
3469 pfctl_show_states(dev, ifaceopt, opts);
3470 pfctl_show_src_nodes(dev, opts);
3471 pfctl_show_status(dev, opts);
3472 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_LABELS,
3473 anchorname, 0, 0);
3474 pfctl_show_timeouts(dev, opts);
3475 pfctl_show_limits(dev, opts);
3476 pfctl_show_tables(anchorname, opts);
3477 pfctl_show_fingerprints(opts);
3478 break;
3479 case 'T':
3480 pfctl_show_tables(anchorname, opts);
3481 break;
3482 case 'o':
3483 pfctl_load_fingerprints(dev, opts);
3484 pfctl_show_fingerprints(opts);
3485 break;
3486 case 'I':
3487 pfctl_show_ifaces(ifaceopt, opts);
3488 break;
3489 case 'c':
3490 pfctl_show_creators(opts);
3491 break;
3492 }
3493 }
3494
3495 if ((opts & PF_OPT_CLRRULECTRS) && showopt == NULL) {
3496 pfctl_show_eth_rules(dev, path, opts, PFCTL_SHOW_NOTHING,
3497 anchorname, 0, 0);
3498 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_NOTHING,
3499 anchorname, 0, 0);
3500 }
3501
3502 if (clearopt != NULL) {
3503 switch (*clearopt) {
3504 case 'e':
3505 pfctl_flush_eth_rules(dev, opts, anchorname);
3506 break;
3507 case 'r':
3508 if (opts & PF_OPT_RECURSE)
3509 pfctl_recurse(dev, opts, anchorname,
3510 pfctl_call_clearrules);
3511 else
3512 pfctl_flush_rules(dev, opts, anchorname);
3513 break;
3514 case 'n':
3515 pfctl_flush_nat(dev, opts, anchorname);
3516 break;
3517 case 'q':
3518 pfctl_clear_altq(dev, opts);
3519 break;
3520 case 's':
3521 pfctl_clear_iface_states(dev, ifaceopt, opts);
3522 break;
3523 case 'S':
3524 pfctl_clear_src_nodes(dev, opts);
3525 break;
3526 case 'i':
3527 pfctl_clear_stats(pfh, opts);
3528 break;
3529 case 'a':
3530 if (ifaceopt) {
3531 warnx("don't specify an interface with -Fall");
3532 usage();
3533 /* NOTREACHED */
3534 }
3535 pfctl_flush_eth_rules(dev, opts, anchorname);
3536 pfctl_flush_rules(dev, opts, anchorname);
3537 pfctl_flush_nat(dev, opts, anchorname);
3538 if (opts & PF_OPT_RECURSE)
3539 pfctl_recurse(dev, opts, anchorname,
3540 pfctl_call_clearanchors);
3541 else {
3542 pfctl_do_clear_tables(anchorname, opts);
3543 pfctl_flush_rules(dev, opts, anchorname);
3544 }
3545 if (!*anchorname) {
3546 pfctl_clear_altq(dev, opts);
3547 pfctl_clear_iface_states(dev, ifaceopt, opts);
3548 pfctl_clear_src_nodes(dev, opts);
3549 pfctl_clear_stats(pfh, opts);
3550 pfctl_clear_fingerprints(dev, opts);
3551 pfctl_reset(dev, opts);
3552 }
3553 break;
3554 case 'o':
3555 pfctl_clear_fingerprints(dev, opts);
3556 break;
3557 case 'T':
3558 if ((opts & PF_OPT_RECURSE) == 0)
3559 pfctl_do_clear_tables(anchorname, opts);
3560 else
3561 pfctl_recurse(dev, opts, anchorname,
3562 pfctl_call_cleartables);
3563 break;
3564 case 'R':
3565 pfctl_reset(dev, opts);
3566 break;
3567 }
3568 }
3569 if (state_killers) {
3570 if (!strcmp(state_kill[0], "label"))
3571 pfctl_label_kill_states(dev, ifaceopt, opts);
3572 else if (!strcmp(state_kill[0], "id"))
3573 pfctl_id_kill_states(dev, ifaceopt, opts);
3574 else if (!strcmp(state_kill[0], "gateway"))
3575 pfctl_gateway_kill_states(dev, ifaceopt, opts);
3576 else if (!strcmp(state_kill[0], "key"))
3577 pfctl_key_kill_states(dev, ifaceopt, opts);
3578 else
3579 pfctl_net_kill_states(dev, ifaceopt, opts);
3580 }
3581
3582 if (src_node_killers)
3583 pfctl_kill_src_nodes(dev, opts);
3584
3585 if (tblcmdopt != NULL) {
3586 exit_val = pfctl_table(argc, argv, tableopt,
3587 tblcmdopt, rulesopt, anchorname, opts);
3588 rulesopt = NULL;
3589 }
3590 if (optiopt != NULL) {
3591 switch (*optiopt) {
3592 case 'n':
3593 optimize = 0;
3594 break;
3595 case 'b':
3596 optimize |= PF_OPTIMIZE_BASIC;
3597 break;
3598 case 'o':
3599 case 'p':
3600 optimize |= PF_OPTIMIZE_PROFILE;
3601 break;
3602 }
3603 }
3604
3605 if ((rulesopt != NULL) && (loadopt & PFCTL_FLAG_OPTION) &&
3606 !anchorname[0] && !(opts & PF_OPT_NOACTION))
3607 pfctl_get_skip_ifaces();
3608
3609 if (rulesopt != NULL && !(opts & PF_OPT_MERGE) &&
3610 !anchorname[0] && (loadopt & PFCTL_FLAG_OPTION))
3611 if (pfctl_file_fingerprints(dev, opts, PF_OSFP_FILE))
3612 exit_val = 1;
3613
3614 if (rulesopt != NULL) {
3615 if (pfctl_rules(dev, rulesopt, opts, optimize,
3616 anchorname, NULL))
3617 exit_val = 1;
3618 }
3619
3620 if (opts & PF_OPT_ENABLE)
3621 if (pfctl_enable(dev, opts))
3622 exit_val = 1;
3623
3624 if (debugopt != NULL) {
3625 switch (*debugopt) {
3626 case 'n':
3627 pfctl_debug(dev, PF_DEBUG_NONE, opts);
3628 break;
3629 case 'u':
3630 pfctl_debug(dev, PF_DEBUG_URGENT, opts);
3631 break;
3632 case 'm':
3633 pfctl_debug(dev, PF_DEBUG_MISC, opts);
3634 break;
3635 case 'l':
3636 pfctl_debug(dev, PF_DEBUG_NOISY, opts);
3637 break;
3638 }
3639 }
3640
3641 exit(exit_val);
3642 }
3643
3644 char *
pf_strerror(int errnum)3645 pf_strerror(int errnum)
3646 {
3647 switch (errnum) {
3648 case ESRCH:
3649 return "Table does not exist.";
3650 case EINVAL:
3651 case ENOENT:
3652 return "Anchor does not exist.";
3653 default:
3654 return strerror(errnum);
3655 }
3656 }
3657