1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2021 Rubicon Communications, LLC (Netgate)
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33
34 #include <sys/ioctl.h>
35 #include <sys/nv.h>
36 #include <sys/queue.h>
37 #include <sys/types.h>
38
39 #include <net/if.h>
40 #include <net/pfvar.h>
41 #include <netinet/in.h>
42
43 #include <netpfil/pf/pf_nl.h>
44 #include <netlink/netlink.h>
45 #include <netlink/netlink_generic.h>
46 #include <netlink/netlink_snl.h>
47 #include <netlink/netlink_snl_generic.h>
48 #include <netlink/netlink_snl_route.h>
49
50 #include <assert.h>
51 #include <err.h>
52 #include <errno.h>
53 #include <fcntl.h>
54 #include <stdlib.h>
55 #include <string.h>
56
57 #include "libpfctl.h"
58
59 struct pfctl_handle {
60 int fd;
61 struct snl_state ss;
62 };
63
64 const char* PFCTL_SYNCOOKIES_MODE_NAMES[] = {
65 "never",
66 "always",
67 "adaptive"
68 };
69
70 static int _pfctl_clear_states(int , const struct pfctl_kill *,
71 unsigned int *, uint64_t);
72
73 struct pfctl_handle *
pfctl_open(const char * pf_device)74 pfctl_open(const char *pf_device)
75 {
76 struct pfctl_handle *h;
77
78 h = calloc(1, sizeof(struct pfctl_handle));
79 h->fd = -1;
80
81 h->fd = open(pf_device, O_RDWR);
82 if (h->fd < 0)
83 goto error;
84
85 if (!snl_init(&h->ss, NETLINK_GENERIC))
86 goto error;
87
88 return (h);
89 error:
90 close(h->fd);
91 snl_free(&h->ss);
92 free(h);
93
94 return (NULL);
95 }
96
97 void
pfctl_close(struct pfctl_handle * h)98 pfctl_close(struct pfctl_handle *h)
99 {
100 close(h->fd);
101 snl_free(&h->ss);
102 free(h);
103 }
104
105 int
pfctl_fd(struct pfctl_handle * h)106 pfctl_fd(struct pfctl_handle *h)
107 {
108 return (h->fd);
109 }
110
111 static int
pfctl_do_netlink_cmd(struct pfctl_handle * h,uint cmd)112 pfctl_do_netlink_cmd(struct pfctl_handle *h, uint cmd)
113 {
114 struct snl_errmsg_data e = {};
115 struct snl_writer nw;
116 struct nlmsghdr *hdr;
117 uint32_t seq_id;
118 int family_id;
119
120 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
121 if (family_id == 0)
122 return (ENOTSUP);
123
124 snl_init_writer(&h->ss, &nw);
125 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
126
127 hdr = snl_finalize_msg(&nw);
128 if (hdr == NULL)
129 return (ENOMEM);
130 seq_id = hdr->nlmsg_seq;
131
132 snl_send_message(&h->ss, hdr);
133
134 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
135 }
136
137 return (e.error);
138 }
139
140 static int
pfctl_do_ioctl(int dev,uint cmd,size_t size,nvlist_t ** nvl)141 pfctl_do_ioctl(int dev, uint cmd, size_t size, nvlist_t **nvl)
142 {
143 struct pfioc_nv nv;
144 void *data;
145 size_t nvlen;
146 int ret;
147
148 data = nvlist_pack(*nvl, &nvlen);
149 if (nvlen > size)
150 size = nvlen;
151
152 retry:
153 nv.data = malloc(size);
154 if (nv.data == NULL) {
155 ret = ENOMEM;
156 goto out;
157 }
158
159 memcpy(nv.data, data, nvlen);
160
161 nv.len = nvlen;
162 nv.size = size;
163
164 ret = ioctl(dev, cmd, &nv);
165 if (ret == -1 && errno == ENOSPC) {
166 size *= 2;
167 free(nv.data);
168 goto retry;
169 }
170
171 nvlist_destroy(*nvl);
172 *nvl = NULL;
173
174 if (ret == 0) {
175 *nvl = nvlist_unpack(nv.data, nv.len, 0);
176 if (*nvl == NULL) {
177 ret = EIO;
178 goto out;
179 }
180 } else {
181 ret = errno;
182 }
183
184 out:
185 free(data);
186 free(nv.data);
187
188 return (ret);
189 }
190
191 static void
pf_nvuint_8_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint8_t * numbers,size_t * nelems)192 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems,
193 uint8_t *numbers, size_t *nelems)
194 {
195 const uint64_t *tmp;
196 size_t elems;
197
198 tmp = nvlist_get_number_array(nvl, name, &elems);
199 assert(elems <= maxelems);
200
201 for (size_t i = 0; i < elems; i++)
202 numbers[i] = tmp[i];
203
204 if (nelems)
205 *nelems = elems;
206 }
207
208 static void
pf_nvuint_16_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint16_t * numbers,size_t * nelems)209 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems,
210 uint16_t *numbers, size_t *nelems)
211 {
212 const uint64_t *tmp;
213 size_t elems;
214
215 tmp = nvlist_get_number_array(nvl, name, &elems);
216 assert(elems <= maxelems);
217
218 for (size_t i = 0; i < elems; i++)
219 numbers[i] = tmp[i];
220
221 if (nelems)
222 *nelems = elems;
223 }
224
225 static void
pf_nvuint_32_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint32_t * numbers,size_t * nelems)226 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems,
227 uint32_t *numbers, size_t *nelems)
228 {
229 const uint64_t *tmp;
230 size_t elems;
231
232 tmp = nvlist_get_number_array(nvl, name, &elems);
233
234 for (size_t i = 0; i < elems && i < maxelems; i++)
235 numbers[i] = tmp[i];
236
237 if (nelems)
238 *nelems = elems;
239 }
240
241 static void
pf_nvuint_64_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint64_t * numbers,size_t * nelems)242 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems,
243 uint64_t *numbers, size_t *nelems)
244 {
245 const uint64_t *tmp;
246 size_t elems;
247
248 tmp = nvlist_get_number_array(nvl, name, &elems);
249 assert(elems <= maxelems);
250
251 for (size_t i = 0; i < elems; i++)
252 numbers[i] = tmp[i];
253
254 if (nelems)
255 *nelems = elems;
256 }
257
258 int
pfctl_startstop(struct pfctl_handle * h,int start)259 pfctl_startstop(struct pfctl_handle *h, int start)
260 {
261 return (pfctl_do_netlink_cmd(h, start ? PFNL_CMD_START : PFNL_CMD_STOP));
262 }
263
264 static void
_pfctl_get_status_counters(const nvlist_t * nvl,struct pfctl_status_counters * counters)265 _pfctl_get_status_counters(const nvlist_t *nvl,
266 struct pfctl_status_counters *counters)
267 {
268 const uint64_t *ids, *counts;
269 const char *const *names;
270 size_t id_len, counter_len, names_len;
271
272 ids = nvlist_get_number_array(nvl, "ids", &id_len);
273 counts = nvlist_get_number_array(nvl, "counters", &counter_len);
274 names = nvlist_get_string_array(nvl, "names", &names_len);
275 assert(id_len == counter_len);
276 assert(counter_len == names_len);
277
278 TAILQ_INIT(counters);
279
280 for (size_t i = 0; i < id_len; i++) {
281 struct pfctl_status_counter *c;
282
283 c = malloc(sizeof(*c));
284 if (c == NULL)
285 continue;
286
287 c->id = ids[i];
288 c->counter = counts[i];
289 c->name = strdup(names[i]);
290
291 TAILQ_INSERT_TAIL(counters, c, entry);
292 }
293 }
294
295 #define _OUT(_field) offsetof(struct pfctl_status_counter, _field)
296 static const struct snl_attr_parser ap_counter[] = {
297 { .type = PF_C_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_uint64 },
298 { .type = PF_C_NAME, .off = _OUT(name), .cb = snl_attr_get_string },
299 { .type = PF_C_ID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
300 };
301 SNL_DECLARE_ATTR_PARSER(counter_parser, ap_counter);
302 #undef _OUT
303
304 static bool
snl_attr_get_counters(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)305 snl_attr_get_counters(struct snl_state *ss, struct nlattr *nla,
306 const void *arg __unused, void *target)
307 {
308 struct pfctl_status_counter counter = {};
309 struct pfctl_status_counter *c;
310 bool error;
311
312 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &counter_parser, &counter);
313 if (! error)
314 return (error);
315
316 c = malloc(sizeof(*c));
317 if (c == NULL)
318 return (false);
319
320 c->id = counter.id;
321 c->counter = counter.counter;
322 c->name = strdup(counter.name);
323
324 TAILQ_INSERT_TAIL((struct pfctl_status_counters *)target, c, entry);
325
326 return (error);
327 }
328
329 struct snl_uint64_array {
330 uint64_t *array;
331 size_t count;
332 size_t max;
333 };
334 static bool
snl_attr_get_uint64_element(struct snl_state * ss,struct nlattr * nla,const void * arg,void * target)335 snl_attr_get_uint64_element(struct snl_state *ss, struct nlattr *nla,
336 const void *arg, void *target)
337 {
338 bool error;
339 uint64_t value;
340 struct snl_uint64_array *t = (struct snl_uint64_array *)target;
341
342 if (t->count >= t->max)
343 return (false);
344
345 error = snl_attr_get_uint64(ss, nla, arg, &value);
346 if (! error)
347 return (error);
348
349 t->array[t->count++] = value;
350
351 return (true);
352 }
353
354 static const struct snl_attr_parser ap_array[] = {
355 { .cb = snl_attr_get_uint64_element },
356 };
357 SNL_DECLARE_ATTR_PARSER(array_parser, ap_array);
358 static bool
snl_attr_get_uint64_array(struct snl_state * ss,struct nlattr * nla,const void * arg,void * target)359 snl_attr_get_uint64_array(struct snl_state *ss, struct nlattr *nla,
360 const void *arg, void *target)
361 {
362 struct snl_uint64_array a = {
363 .array = target,
364 .count = 0,
365 .max = (size_t)arg,
366 };
367 bool error;
368
369 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a);
370 if (! error)
371 return (error);
372
373 return (true);
374 }
375
376 #define _OUT(_field) offsetof(struct pfctl_status, _field)
377 static const struct snl_attr_parser ap_getstatus[] = {
378 { .type = PF_GS_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
379 { .type = PF_GS_RUNNING, .off = _OUT(running), .cb = snl_attr_get_bool },
380 { .type = PF_GS_SINCE, .off = _OUT(since), .cb = snl_attr_get_uint32 },
381 { .type = PF_GS_DEBUG, .off = _OUT(debug), .cb = snl_attr_get_uint32 },
382 { .type = PF_GS_HOSTID, .off = _OUT(hostid), .cb = snl_attr_get_uint32 },
383 { .type = PF_GS_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
384 { .type = PF_GS_SRC_NODES, .off = _OUT(src_nodes), .cb = snl_attr_get_uint32 },
385 { .type = PF_GS_REASSEMBLE, .off = _OUT(reass), .cb = snl_attr_get_uint32 },
386 { .type = PF_GS_SYNCOOKIES_ACTIVE, .off = _OUT(syncookies_active), .cb = snl_attr_get_uint32 },
387 { .type = PF_GS_COUNTERS, .off = _OUT(counters), .cb = snl_attr_get_counters },
388 { .type = PF_GS_LCOUNTERS, .off = _OUT(lcounters), .cb = snl_attr_get_counters },
389 { .type = PF_GS_FCOUNTERS, .off = _OUT(fcounters), .cb = snl_attr_get_counters },
390 { .type = PF_GS_SCOUNTERS, .off = _OUT(scounters), .cb = snl_attr_get_counters },
391 { .type = PF_GS_CHKSUM, .off = _OUT(pf_chksum), .arg_u32 = PF_MD5_DIGEST_LENGTH, .cb = snl_attr_get_bytes },
392 { .type = PF_GS_BCOUNTERS, .off = _OUT(bcounters), .arg_u32 = 2 * 2, .cb = snl_attr_get_uint64_array },
393 { .type = PF_GS_PCOUNTERS, .off = _OUT(pcounters), .arg_u32 = 2 * 2 * 2, .cb = snl_attr_get_uint64_array },
394 };
395 static struct snl_field_parser fp_getstatus[] = {};
396 SNL_DECLARE_PARSER(getstatus_parser, struct genlmsghdr, fp_getstatus, ap_getstatus);
397 #undef _OUT
398
399 struct pfctl_status *
pfctl_get_status_h(struct pfctl_handle * h __unused)400 pfctl_get_status_h(struct pfctl_handle *h __unused)
401 {
402 struct pfctl_status *status;
403 struct snl_errmsg_data e = {};
404 struct nlmsghdr *hdr;
405 struct snl_writer nw;
406 uint32_t seq_id;
407 int family_id;
408
409 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
410 if (family_id == 0)
411 return (NULL);
412
413 snl_init_writer(&h->ss, &nw);
414 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_STATUS);
415 hdr->nlmsg_flags |= NLM_F_DUMP;
416
417 hdr = snl_finalize_msg(&nw);
418 if (hdr == NULL) {
419 return (NULL);
420 }
421
422 seq_id = hdr->nlmsg_seq;
423 if (! snl_send_message(&h->ss, hdr))
424 return (NULL);
425
426 status = calloc(1, sizeof(*status));
427 if (status == NULL)
428 return (NULL);
429 TAILQ_INIT(&status->counters);
430 TAILQ_INIT(&status->lcounters);
431 TAILQ_INIT(&status->fcounters);
432 TAILQ_INIT(&status->scounters);
433
434 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
435 if (! snl_parse_nlmsg(&h->ss, hdr, &getstatus_parser, status))
436 continue;
437 }
438
439 return (status);
440 }
441
442 struct pfctl_status *
pfctl_get_status(int dev)443 pfctl_get_status(int dev)
444 {
445 struct pfctl_status *status;
446 nvlist_t *nvl;
447 size_t len;
448 const void *chksum;
449
450 status = calloc(1, sizeof(*status));
451 if (status == NULL)
452 return (NULL);
453
454 nvl = nvlist_create(0);
455
456 if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) {
457 nvlist_destroy(nvl);
458 free(status);
459 return (NULL);
460 }
461
462 status->running = nvlist_get_bool(nvl, "running");
463 status->since = nvlist_get_number(nvl, "since");
464 status->debug = nvlist_get_number(nvl, "debug");
465 status->hostid = ntohl(nvlist_get_number(nvl, "hostid"));
466 status->states = nvlist_get_number(nvl, "states");
467 status->src_nodes = nvlist_get_number(nvl, "src_nodes");
468 status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active");
469 status->reass = nvlist_get_number(nvl, "reass");
470
471 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"),
472 IFNAMSIZ);
473 chksum = nvlist_get_binary(nvl, "chksum", &len);
474 assert(len == PF_MD5_DIGEST_LENGTH);
475 memcpy(status->pf_chksum, chksum, len);
476
477 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"),
478 &status->counters);
479 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"),
480 &status->lcounters);
481 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"),
482 &status->fcounters);
483 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"),
484 &status->scounters);
485
486 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2,
487 (uint64_t *)status->pcounters, NULL);
488 pf_nvuint_64_array(nvl, "bcounters", 2 * 2,
489 (uint64_t *)status->bcounters, NULL);
490
491 nvlist_destroy(nvl);
492
493 return (status);
494 }
495 int
pfctl_clear_status(struct pfctl_handle * h)496 pfctl_clear_status(struct pfctl_handle *h)
497 {
498 return (pfctl_do_netlink_cmd(h, PFNL_CMD_CLEAR_STATUS));
499 }
500
501 static uint64_t
_pfctl_status_counter(struct pfctl_status_counters * counters,uint64_t id)502 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id)
503 {
504 struct pfctl_status_counter *c;
505
506 TAILQ_FOREACH(c, counters, entry) {
507 if (c->id == id)
508 return (c->counter);
509 }
510
511 return (0);
512 }
513
514 uint64_t
pfctl_status_counter(struct pfctl_status * status,int id)515 pfctl_status_counter(struct pfctl_status *status, int id)
516 {
517 return (_pfctl_status_counter(&status->counters, id));
518 }
519
520 uint64_t
pfctl_status_lcounter(struct pfctl_status * status,int id)521 pfctl_status_lcounter(struct pfctl_status *status, int id)
522 {
523 return (_pfctl_status_counter(&status->lcounters, id));
524 }
525
526 uint64_t
pfctl_status_fcounter(struct pfctl_status * status,int id)527 pfctl_status_fcounter(struct pfctl_status *status, int id)
528 {
529 return (_pfctl_status_counter(&status->fcounters, id));
530 }
531
532 uint64_t
pfctl_status_scounter(struct pfctl_status * status,int id)533 pfctl_status_scounter(struct pfctl_status *status, int id)
534 {
535 return (_pfctl_status_counter(&status->scounters, id));
536 }
537
538 void
pfctl_free_status(struct pfctl_status * status)539 pfctl_free_status(struct pfctl_status *status)
540 {
541 struct pfctl_status_counter *c, *tmp;
542
543 if (status == NULL)
544 return;
545
546 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) {
547 free(c->name);
548 free(c);
549 }
550 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) {
551 free(c->name);
552 free(c);
553 }
554 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) {
555 free(c->name);
556 free(c);
557 }
558 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) {
559 free(c->name);
560 free(c);
561 }
562
563 free(status);
564 }
565
566 static void
pfctl_nv_add_addr(nvlist_t * nvparent,const char * name,const struct pf_addr * addr)567 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name,
568 const struct pf_addr *addr)
569 {
570 nvlist_t *nvl = nvlist_create(0);
571
572 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr));
573
574 nvlist_add_nvlist(nvparent, name, nvl);
575 nvlist_destroy(nvl);
576 }
577
578 static void
pf_nvaddr_to_addr(const nvlist_t * nvl,struct pf_addr * addr)579 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr)
580 {
581 size_t len;
582 const void *data;
583
584 data = nvlist_get_binary(nvl, "addr", &len);
585 assert(len == sizeof(struct pf_addr));
586 memcpy(addr, data, len);
587 }
588
589 static void
pfctl_nv_add_addr_wrap(nvlist_t * nvparent,const char * name,const struct pf_addr_wrap * addr)590 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name,
591 const struct pf_addr_wrap *addr)
592 {
593 nvlist_t *nvl = nvlist_create(0);
594
595 nvlist_add_number(nvl, "type", addr->type);
596 nvlist_add_number(nvl, "iflags", addr->iflags);
597 if (addr->type == PF_ADDR_DYNIFTL)
598 nvlist_add_string(nvl, "ifname", addr->v.ifname);
599 if (addr->type == PF_ADDR_TABLE)
600 nvlist_add_string(nvl, "tblname", addr->v.tblname);
601 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr);
602 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask);
603
604 nvlist_add_nvlist(nvparent, name, nvl);
605 nvlist_destroy(nvl);
606 }
607
608 static void
pf_nvaddr_wrap_to_addr_wrap(const nvlist_t * nvl,struct pf_addr_wrap * addr)609 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr)
610 {
611 bzero(addr, sizeof(*addr));
612
613 addr->type = nvlist_get_number(nvl, "type");
614 addr->iflags = nvlist_get_number(nvl, "iflags");
615 if (addr->type == PF_ADDR_DYNIFTL) {
616 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"),
617 IFNAMSIZ);
618 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt");
619 }
620 if (addr->type == PF_ADDR_TABLE) {
621 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"),
622 PF_TABLE_NAME_SIZE);
623 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt");
624 }
625
626 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr);
627 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask);
628 }
629
630 static void
pfctl_nv_add_rule_addr(nvlist_t * nvparent,const char * name,const struct pf_rule_addr * addr)631 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name,
632 const struct pf_rule_addr *addr)
633 {
634 uint64_t ports[2];
635 nvlist_t *nvl = nvlist_create(0);
636
637 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr);
638 ports[0] = addr->port[0];
639 ports[1] = addr->port[1];
640 nvlist_add_number_array(nvl, "port", ports, 2);
641 nvlist_add_number(nvl, "neg", addr->neg);
642 nvlist_add_number(nvl, "port_op", addr->port_op);
643
644 nvlist_add_nvlist(nvparent, name, nvl);
645 nvlist_destroy(nvl);
646 }
647
648 static void
pf_nvrule_addr_to_rule_addr(const nvlist_t * nvl,struct pf_rule_addr * addr)649 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr)
650 {
651 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr);
652
653 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL);
654 addr->neg = nvlist_get_number(nvl, "neg");
655 addr->port_op = nvlist_get_number(nvl, "port_op");
656 }
657
658 static void
pf_nvmape_to_mape(const nvlist_t * nvl,struct pf_mape_portset * mape)659 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape)
660 {
661 mape->offset = nvlist_get_number(nvl, "offset");
662 mape->psidlen = nvlist_get_number(nvl, "psidlen");
663 mape->psid = nvlist_get_number(nvl, "psid");
664 }
665
666 static void
pf_nvpool_to_pool(const nvlist_t * nvl,struct pfctl_pool * pool)667 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool)
668 {
669 size_t len;
670 const void *data;
671
672 data = nvlist_get_binary(nvl, "key", &len);
673 assert(len == sizeof(pool->key));
674 memcpy(&pool->key, data, len);
675
676 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter);
677
678 pool->tblidx = nvlist_get_number(nvl, "tblidx");
679 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL);
680 pool->opts = nvlist_get_number(nvl, "opts");
681
682 if (nvlist_exists_nvlist(nvl, "mape"))
683 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape);
684 }
685
686 static void
pf_nvrule_uid_to_rule_uid(const nvlist_t * nvl,struct pf_rule_uid * uid)687 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid)
688 {
689 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL);
690 uid->op = nvlist_get_number(nvl, "op");
691 }
692
693 static void
pf_nvdivert_to_divert(const nvlist_t * nvl,struct pfctl_rule * rule)694 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule)
695 {
696 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr);
697 rule->divert.port = nvlist_get_number(nvl, "port");
698 }
699
700 static void
pf_nvrule_to_rule(const nvlist_t * nvl,struct pfctl_rule * rule)701 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule)
702 {
703 const uint64_t *skip;
704 const char *const *labels;
705 size_t skipcount, labelcount;
706
707 rule->nr = nvlist_get_number(nvl, "nr");
708
709 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src);
710 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst);
711
712 skip = nvlist_get_number_array(nvl, "skip", &skipcount);
713 assert(skip);
714 assert(skipcount == PF_SKIP_COUNT);
715 for (int i = 0; i < PF_SKIP_COUNT; i++)
716 rule->skip[i].nr = skip[i];
717
718 labels = nvlist_get_string_array(nvl, "labels", &labelcount);
719 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
720 for (size_t i = 0; i < labelcount; i++)
721 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
722 rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
723 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
724 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
725 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE);
726 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
727 PF_TAG_NAME_SIZE);
728 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
729 PF_TAG_NAME_SIZE);
730
731 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"),
732 PF_TABLE_NAME_SIZE);
733
734 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool);
735
736 rule->evaluations = nvlist_get_number(nvl, "evaluations");
737 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL);
738 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL);
739
740 if (nvlist_exists_number(nvl, "timestamp")) {
741 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
742 }
743
744 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint");
745
746 rule->rtableid = nvlist_get_number(nvl, "rtableid");
747 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL);
748 rule->max_states = nvlist_get_number(nvl, "max_states");
749 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes");
750 rule->max_src_states = nvlist_get_number(nvl, "max_src_states");
751 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn");
752 rule->max_src_conn_rate.limit =
753 nvlist_get_number(nvl, "max_src_conn_rate.limit");
754 rule->max_src_conn_rate.seconds =
755 nvlist_get_number(nvl, "max_src_conn_rate.seconds");
756 rule->qid = nvlist_get_number(nvl, "qid");
757 rule->pqid = nvlist_get_number(nvl, "pqid");
758 rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
759 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe");
760 rule->free_flags = nvlist_get_number(nvl, "dnflags");
761 rule->prob = nvlist_get_number(nvl, "prob");
762 rule->cuid = nvlist_get_number(nvl, "cuid");
763 rule->cpid = nvlist_get_number(nvl, "cpid");
764
765 rule->return_icmp = nvlist_get_number(nvl, "return_icmp");
766 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6");
767 rule->max_mss = nvlist_get_number(nvl, "max_mss");
768 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags");
769
770 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid);
771 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"),
772 (struct pf_rule_uid *)&rule->gid);
773
774 rule->rule_flag = nvlist_get_number(nvl, "rule_flag");
775 rule->action = nvlist_get_number(nvl, "action");
776 rule->direction = nvlist_get_number(nvl, "direction");
777 rule->log = nvlist_get_number(nvl, "log");
778 rule->logif = nvlist_get_number(nvl, "logif");
779 rule->quick = nvlist_get_number(nvl, "quick");
780 rule->ifnot = nvlist_get_number(nvl, "ifnot");
781 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not");
782 rule->natpass = nvlist_get_number(nvl, "natpass");
783
784 rule->keep_state = nvlist_get_number(nvl, "keep_state");
785 rule->af = nvlist_get_number(nvl, "af");
786 rule->proto = nvlist_get_number(nvl, "proto");
787 rule->type = nvlist_get_number(nvl, "type");
788 rule->code = nvlist_get_number(nvl, "code");
789 rule->flags = nvlist_get_number(nvl, "flags");
790 rule->flagset = nvlist_get_number(nvl, "flagset");
791 rule->min_ttl = nvlist_get_number(nvl, "min_ttl");
792 rule->allow_opts = nvlist_get_number(nvl, "allow_opts");
793 rule->rt = nvlist_get_number(nvl, "rt");
794 rule->return_ttl = nvlist_get_number(nvl, "return_ttl");
795 rule->tos = nvlist_get_number(nvl, "tos");
796 rule->set_tos = nvlist_get_number(nvl, "set_tos");
797 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
798 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
799
800 rule->flush = nvlist_get_number(nvl, "flush");
801 rule->prio = nvlist_get_number(nvl, "prio");
802 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL);
803
804 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule);
805
806 rule->states_cur = nvlist_get_number(nvl, "states_cur");
807 rule->states_tot = nvlist_get_number(nvl, "states_tot");
808 rule->src_nodes = nvlist_get_number(nvl, "src_nodes");
809 }
810
811 static void
pfctl_nveth_addr_to_eth_addr(const nvlist_t * nvl,struct pfctl_eth_addr * addr)812 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr)
813 {
814 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 };
815 size_t len;
816 const void *data;
817
818 data = nvlist_get_binary(nvl, "addr", &len);
819 assert(len == sizeof(addr->addr));
820 memcpy(addr->addr, data, sizeof(addr->addr));
821
822 data = nvlist_get_binary(nvl, "mask", &len);
823 assert(len == sizeof(addr->mask));
824 memcpy(addr->mask, data, sizeof(addr->mask));
825
826 addr->neg = nvlist_get_bool(nvl, "neg");
827
828 /* To make checks for 'is this address set?' easier. */
829 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0;
830 }
831
832 static nvlist_t *
pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr * addr)833 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr)
834 {
835 nvlist_t *nvl;
836
837 nvl = nvlist_create(0);
838 if (nvl == NULL)
839 return (NULL);
840
841 nvlist_add_bool(nvl, "neg", addr->neg);
842 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN);
843 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN);
844
845 return (nvl);
846 }
847
848 static void
pfctl_nveth_rule_to_eth_rule(const nvlist_t * nvl,struct pfctl_eth_rule * rule)849 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule)
850 {
851 const char *const *labels;
852 size_t labelcount, i;
853
854 rule->nr = nvlist_get_number(nvl, "nr");
855 rule->quick = nvlist_get_bool(nvl, "quick");
856 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
857 rule->ifnot = nvlist_get_bool(nvl, "ifnot");
858 rule->direction = nvlist_get_number(nvl, "direction");
859 rule->proto = nvlist_get_number(nvl, "proto");
860 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
861 PF_TAG_NAME_SIZE);
862 rule->match_tag = nvlist_get_number(nvl, "match_tag");
863 rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not");
864
865 labels = nvlist_get_string_array(nvl, "labels", &labelcount);
866 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
867 for (i = 0; i < labelcount; i++)
868 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
869 rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
870
871 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"),
872 &rule->src);
873 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"),
874 &rule->dst);
875
876 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"),
877 &rule->ipsrc);
878 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"),
879 &rule->ipdst);
880
881 rule->evaluations = nvlist_get_number(nvl, "evaluations");
882 rule->packets[0] = nvlist_get_number(nvl, "packets-in");
883 rule->packets[1] = nvlist_get_number(nvl, "packets-out");
884 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in");
885 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out");
886
887 if (nvlist_exists_number(nvl, "timestamp")) {
888 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
889 }
890
891 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
892 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
893 PF_TAG_NAME_SIZE);
894
895 rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
896 rule->dnflags = nvlist_get_number(nvl, "dnflags");
897
898 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
899 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
900
901 strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"),
902 IFNAMSIZ);
903
904 rule->action = nvlist_get_number(nvl, "action");
905 }
906
907 int
pfctl_get_eth_rulesets_info(int dev,struct pfctl_eth_rulesets_info * ri,const char * path)908 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri,
909 const char *path)
910 {
911 nvlist_t *nvl;
912 int ret;
913
914 bzero(ri, sizeof(*ri));
915
916 nvl = nvlist_create(0);
917 nvlist_add_string(nvl, "path", path);
918
919 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0)
920 goto out;
921
922 ri->nr = nvlist_get_number(nvl, "nr");
923
924 out:
925 nvlist_destroy(nvl);
926 return (ret);
927 }
928
929 int
pfctl_get_eth_ruleset(int dev,const char * path,int nr,struct pfctl_eth_ruleset_info * ri)930 pfctl_get_eth_ruleset(int dev, const char *path, int nr,
931 struct pfctl_eth_ruleset_info *ri)
932 {
933 nvlist_t *nvl;
934 int ret;
935
936 bzero(ri, sizeof(*ri));
937
938 nvl = nvlist_create(0);
939 nvlist_add_string(nvl, "path", path);
940 nvlist_add_number(nvl, "nr", nr);
941
942 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0)
943 goto out;
944
945 ri->nr = nvlist_get_number(nvl, "nr");
946 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN);
947 strlcpy(ri->name, nvlist_get_string(nvl, "name"),
948 PF_ANCHOR_NAME_SIZE);
949
950 out:
951 nvlist_destroy(nvl);
952 return (ret);
953 }
954
955 int
pfctl_get_eth_rules_info(int dev,struct pfctl_eth_rules_info * rules,const char * path)956 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules,
957 const char *path)
958 {
959 nvlist_t *nvl;
960 int ret;
961
962 bzero(rules, sizeof(*rules));
963
964 nvl = nvlist_create(0);
965 nvlist_add_string(nvl, "anchor", path);
966
967 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0)
968 goto out;
969
970 rules->nr = nvlist_get_number(nvl, "nr");
971 rules->ticket = nvlist_get_number(nvl, "ticket");
972
973 out:
974 nvlist_destroy(nvl);
975 return (ret);
976 }
977
978 int
pfctl_get_eth_rule(int dev,uint32_t nr,uint32_t ticket,const char * path,struct pfctl_eth_rule * rule,bool clear,char * anchor_call)979 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket,
980 const char *path, struct pfctl_eth_rule *rule, bool clear,
981 char *anchor_call)
982 {
983 nvlist_t *nvl;
984 int ret;
985
986 nvl = nvlist_create(0);
987
988 nvlist_add_string(nvl, "anchor", path);
989 nvlist_add_number(nvl, "ticket", ticket);
990 nvlist_add_number(nvl, "nr", nr);
991 nvlist_add_bool(nvl, "clear", clear);
992
993 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0)
994 goto out;
995
996 pfctl_nveth_rule_to_eth_rule(nvl, rule);
997
998 if (anchor_call)
999 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1000 MAXPATHLEN);
1001
1002 out:
1003 nvlist_destroy(nvl);
1004 return (ret);
1005 }
1006
1007 int
pfctl_add_eth_rule(int dev,const struct pfctl_eth_rule * r,const char * anchor,const char * anchor_call,uint32_t ticket)1008 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor,
1009 const char *anchor_call, uint32_t ticket)
1010 {
1011 struct pfioc_nv nv;
1012 nvlist_t *nvl, *addr;
1013 void *packed;
1014 int error = 0;
1015 size_t labelcount, size;
1016
1017 nvl = nvlist_create(0);
1018
1019 nvlist_add_number(nvl, "ticket", ticket);
1020 nvlist_add_string(nvl, "anchor", anchor);
1021 nvlist_add_string(nvl, "anchor_call", anchor_call);
1022
1023 nvlist_add_number(nvl, "nr", r->nr);
1024 nvlist_add_bool(nvl, "quick", r->quick);
1025 nvlist_add_string(nvl, "ifname", r->ifname);
1026 nvlist_add_bool(nvl, "ifnot", r->ifnot);
1027 nvlist_add_number(nvl, "direction", r->direction);
1028 nvlist_add_number(nvl, "proto", r->proto);
1029 nvlist_add_string(nvl, "match_tagname", r->match_tagname);
1030 nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not);
1031
1032 addr = pfctl_eth_addr_to_nveth_addr(&r->src);
1033 if (addr == NULL) {
1034 nvlist_destroy(nvl);
1035 return (ENOMEM);
1036 }
1037 nvlist_add_nvlist(nvl, "src", addr);
1038 nvlist_destroy(addr);
1039
1040 addr = pfctl_eth_addr_to_nveth_addr(&r->dst);
1041 if (addr == NULL) {
1042 nvlist_destroy(nvl);
1043 return (ENOMEM);
1044 }
1045 nvlist_add_nvlist(nvl, "dst", addr);
1046 nvlist_destroy(addr);
1047
1048 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc);
1049 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst);
1050
1051 labelcount = 0;
1052 while (labelcount < PF_RULE_MAX_LABEL_COUNT &&
1053 r->label[labelcount][0] != 0) {
1054 nvlist_append_string_array(nvl, "labels",
1055 r->label[labelcount]);
1056 labelcount++;
1057 }
1058 nvlist_add_number(nvl, "ridentifier", r->ridentifier);
1059
1060 nvlist_add_string(nvl, "qname", r->qname);
1061 nvlist_add_string(nvl, "tagname", r->tagname);
1062 nvlist_add_number(nvl, "dnpipe", r->dnpipe);
1063 nvlist_add_number(nvl, "dnflags", r->dnflags);
1064
1065 nvlist_add_string(nvl, "bridge_to", r->bridge_to);
1066
1067 nvlist_add_number(nvl, "action", r->action);
1068
1069 packed = nvlist_pack(nvl, &size);
1070 if (packed == NULL) {
1071 nvlist_destroy(nvl);
1072 return (ENOMEM);
1073 }
1074
1075 nv.len = size;
1076 nv.size = size;
1077 nv.data = packed;
1078
1079 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0)
1080 error = errno;
1081
1082 free(packed);
1083 nvlist_destroy(nvl);
1084
1085 return (error);
1086 }
1087
1088 static void
snl_add_msg_attr_addr_wrap(struct snl_writer * nw,uint32_t type,const struct pf_addr_wrap * addr)1089 snl_add_msg_attr_addr_wrap(struct snl_writer *nw, uint32_t type, const struct pf_addr_wrap *addr)
1090 {
1091 int off;
1092
1093 off = snl_add_msg_attr_nested(nw, type);
1094
1095 snl_add_msg_attr_ip6(nw, PF_AT_ADDR, &addr->v.a.addr.v6);
1096 snl_add_msg_attr_ip6(nw, PF_AT_MASK, &addr->v.a.mask.v6);
1097
1098 if (addr->type == PF_ADDR_DYNIFTL)
1099 snl_add_msg_attr_string(nw, PF_AT_IFNAME, addr->v.ifname);
1100 if (addr->type == PF_ADDR_TABLE)
1101 snl_add_msg_attr_string(nw, PF_AT_TABLENAME, addr->v.tblname);
1102 snl_add_msg_attr_u8(nw, PF_AT_TYPE, addr->type);
1103 snl_add_msg_attr_u8(nw, PF_AT_IFLAGS, addr->iflags);
1104
1105 snl_end_attr_nested(nw, off);
1106 }
1107
1108 static void
snl_add_msg_attr_rule_addr(struct snl_writer * nw,uint32_t type,const struct pf_rule_addr * addr)1109 snl_add_msg_attr_rule_addr(struct snl_writer *nw, uint32_t type, const struct pf_rule_addr *addr)
1110 {
1111 int off;
1112
1113 off = snl_add_msg_attr_nested(nw, type);
1114
1115 snl_add_msg_attr_addr_wrap(nw, PF_RAT_ADDR, &addr->addr);
1116 snl_add_msg_attr_u16(nw, PF_RAT_SRC_PORT, addr->port[0]);
1117 snl_add_msg_attr_u16(nw, PF_RAT_DST_PORT, addr->port[1]);
1118 snl_add_msg_attr_u8(nw, PF_RAT_NEG, addr->neg);
1119 snl_add_msg_attr_u8(nw, PF_RAT_OP, addr->port_op);
1120
1121 snl_end_attr_nested(nw, off);
1122 }
1123
1124 static void
snl_add_msg_attr_rule_labels(struct snl_writer * nw,uint32_t type,const char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE])1125 snl_add_msg_attr_rule_labels(struct snl_writer *nw, uint32_t type, const char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE])
1126 {
1127 int off, i = 0;
1128
1129 off = snl_add_msg_attr_nested(nw, type);
1130
1131 while (i < PF_RULE_MAX_LABEL_COUNT &&
1132 labels[i][0] != 0) {
1133 snl_add_msg_attr_string(nw, PF_LT_LABEL, labels[i]);
1134 i++;
1135 }
1136
1137 snl_end_attr_nested(nw, off);
1138 }
1139
1140 static void
snl_add_msg_attr_mape(struct snl_writer * nw,uint32_t type,const struct pf_mape_portset * me)1141 snl_add_msg_attr_mape(struct snl_writer *nw, uint32_t type, const struct pf_mape_portset *me)
1142 {
1143 int off;
1144
1145 off = snl_add_msg_attr_nested(nw, type);
1146
1147 snl_add_msg_attr_u8(nw, PF_MET_OFFSET, me->offset);
1148 snl_add_msg_attr_u8(nw, PF_MET_PSID_LEN, me->psidlen);
1149 snl_add_msg_attr_u16(nw, PF_MET_PSID, me->psid);
1150
1151 snl_end_attr_nested(nw, off);
1152 }
1153
1154 static void
snl_add_msg_attr_rpool(struct snl_writer * nw,uint32_t type,const struct pfctl_pool * pool)1155 snl_add_msg_attr_rpool(struct snl_writer *nw, uint32_t type, const struct pfctl_pool *pool)
1156 {
1157 int off;
1158
1159 off = snl_add_msg_attr_nested(nw, type);
1160
1161 snl_add_msg_attr(nw, PF_PT_KEY, sizeof(pool->key), &pool->key);
1162 snl_add_msg_attr_ip6(nw, PF_PT_COUNTER, &pool->counter.v6);
1163 snl_add_msg_attr_u32(nw, PF_PT_TBLIDX, pool->tblidx);
1164 snl_add_msg_attr_u16(nw, PF_PT_PROXY_SRC_PORT, pool->proxy_port[0]);
1165 snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]);
1166 snl_add_msg_attr_u8(nw, PF_PT_OPTS, pool->opts);
1167 snl_add_msg_attr_mape(nw, PF_PT_MAPE, &pool->mape);
1168
1169 snl_end_attr_nested(nw, off);
1170 }
1171
1172 static void
snl_add_msg_attr_timeouts(struct snl_writer * nw,uint32_t type,const uint32_t * timeouts)1173 snl_add_msg_attr_timeouts(struct snl_writer *nw, uint32_t type, const uint32_t *timeouts)
1174 {
1175 int off;
1176
1177 off = snl_add_msg_attr_nested(nw, type);
1178
1179 for (int i = 0; i < PFTM_MAX; i++)
1180 snl_add_msg_attr_u32(nw, PF_TT_TIMEOUT, timeouts[i]);
1181
1182 snl_end_attr_nested(nw, off);
1183 }
1184
1185 static void
snl_add_msg_attr_uid(struct snl_writer * nw,uint32_t type,const struct pf_rule_uid * uid)1186 snl_add_msg_attr_uid(struct snl_writer *nw, uint32_t type, const struct pf_rule_uid *uid)
1187 {
1188 int off;
1189
1190 off = snl_add_msg_attr_nested(nw, type);
1191
1192 snl_add_msg_attr_u32(nw, PF_RUT_UID_LOW, uid->uid[0]);
1193 snl_add_msg_attr_u32(nw, PF_RUT_UID_HIGH, uid->uid[1]);
1194 snl_add_msg_attr_u8(nw, PF_RUT_OP, uid->op);
1195
1196 snl_end_attr_nested(nw, off);
1197 }
1198
1199 static void
snl_add_msg_attr_pf_rule(struct snl_writer * nw,uint32_t type,const struct pfctl_rule * r)1200 snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r)
1201 {
1202 int off;
1203
1204 off = snl_add_msg_attr_nested(nw, type);
1205
1206 snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src);
1207 snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst);
1208 snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label);
1209 snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier);
1210 snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname);
1211 snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname);
1212 snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname);
1213 snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname);
1214 snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname);
1215 snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname);
1216 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL, &r->rpool);
1217 snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint);
1218 snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid);
1219 snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout);
1220 snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states);
1221 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes);
1222 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states);
1223 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit);
1224 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds);
1225
1226 snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe);
1227 snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe);
1228 snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags);
1229
1230 snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr);
1231 snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob);
1232 snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid);
1233 snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid);
1234
1235 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp);
1236 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6);
1237 snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss);
1238 snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags);
1239
1240 snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid);
1241 snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid);
1242
1243 snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag);
1244 snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action);
1245 snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction);
1246 snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log);
1247 snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif);
1248 snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick);
1249 snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot);
1250 snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not);
1251 snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass);
1252 snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state);
1253 snl_add_msg_attr_u8(nw, PF_RT_AF, r->af);
1254 snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto);
1255 snl_add_msg_attr_u8(nw, PF_RT_TYPE, r->type);
1256 snl_add_msg_attr_u8(nw, PF_RT_CODE, r->code);
1257 snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags);
1258 snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset);
1259 snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl);
1260 snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts);
1261 snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt);
1262 snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl);
1263 snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos);
1264 snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos);
1265
1266 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative);
1267 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard);
1268 snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush);
1269 snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio);
1270 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]);
1271 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]);
1272
1273 snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6);
1274 snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port);
1275
1276 snl_end_attr_nested(nw, off);
1277 }
1278
1279 int
pfctl_add_rule(int dev __unused,const struct pfctl_rule * r,const char * anchor,const char * anchor_call,uint32_t ticket,uint32_t pool_ticket)1280 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor,
1281 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket)
1282 {
1283 struct pfctl_handle *h;
1284 int ret;
1285
1286 h = pfctl_open(PF_DEVICE);
1287 if (h == NULL)
1288 return (ENODEV);
1289
1290 ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket);
1291
1292 pfctl_close(h);
1293
1294 return (ret);
1295 }
1296
1297 int
pfctl_add_rule_h(struct pfctl_handle * h,const struct pfctl_rule * r,const char * anchor,const char * anchor_call,uint32_t ticket,uint32_t pool_ticket)1298 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r,
1299 const char *anchor, const char *anchor_call, uint32_t ticket,
1300 uint32_t pool_ticket)
1301 {
1302 struct snl_writer nw;
1303 struct snl_errmsg_data e = {};
1304 struct nlmsghdr *hdr;
1305 uint32_t seq_id;
1306 int family_id;
1307
1308 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1309 if (family_id == 0)
1310 return (ENOTSUP);
1311
1312 snl_init_writer(&h->ss, &nw);
1313 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE);
1314 hdr->nlmsg_flags |= NLM_F_DUMP;
1315 snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket);
1316 snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket);
1317 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor);
1318 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call);
1319
1320 snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r);
1321
1322 if ((hdr = snl_finalize_msg(&nw)) == NULL)
1323 return (ENXIO);
1324
1325 seq_id = hdr->nlmsg_seq;
1326
1327 if (! snl_send_message(&h->ss, hdr))
1328 return (ENXIO);
1329
1330 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1331 }
1332
1333 return (e.error);
1334 }
1335
1336 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1337 #define _OUT(_field) offsetof(struct pfctl_rules_info, _field)
1338 static struct snl_attr_parser ap_getrules[] = {
1339 { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
1340 { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
1341 };
1342 static struct snl_field_parser fp_getrules[] = {
1343 };
1344 #undef _IN
1345 #undef _OUT
1346 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, fp_getrules, ap_getrules);
1347
1348 int
pfctl_get_rules_info_h(struct pfctl_handle * h,struct pfctl_rules_info * rules,uint32_t ruleset,const char * path)1349 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset,
1350 const char *path)
1351 {
1352 struct snl_errmsg_data e = {};
1353 struct nlmsghdr *hdr;
1354 struct snl_writer nw;
1355 uint32_t seq_id;
1356 int family_id;
1357
1358 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1359 if (family_id == 0)
1360 return (ENOTSUP);
1361
1362 snl_init_writer(&h->ss, &nw);
1363 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES);
1364 hdr->nlmsg_flags |= NLM_F_DUMP;
1365
1366 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path);
1367 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1368
1369 hdr = snl_finalize_msg(&nw);
1370 if (hdr == NULL)
1371 return (ENOMEM);
1372
1373 seq_id = hdr->nlmsg_seq;
1374 if (! snl_send_message(&h->ss, hdr))
1375 return (ENXIO);
1376
1377 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1378 if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules))
1379 continue;
1380 }
1381
1382 return (e.error);
1383 }
1384
1385 int
pfctl_get_rules_info(int dev __unused,struct pfctl_rules_info * rules,uint32_t ruleset,const char * path)1386 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset,
1387 const char *path)
1388 {
1389 struct pfctl_handle *h;
1390 int error;
1391
1392 h = pfctl_open(PF_DEVICE);
1393 if (h == NULL)
1394 return (ENOTSUP);
1395 error = pfctl_get_rules_info_h(h, rules, ruleset, path);
1396 pfctl_close(h);
1397
1398 return (error);
1399 }
1400
1401 int
pfctl_get_rule_h(struct pfctl_handle * h,uint32_t nr,uint32_t ticket,const char * anchor,uint32_t ruleset,struct pfctl_rule * rule,char * anchor_call)1402 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor,
1403 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1404 {
1405 return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule,
1406 anchor_call, false));
1407 }
1408
1409 int
pfctl_get_rule(int dev,uint32_t nr,uint32_t ticket,const char * anchor,uint32_t ruleset,struct pfctl_rule * rule,char * anchor_call)1410 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor,
1411 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1412 {
1413 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule,
1414 anchor_call, false));
1415 }
1416
1417 #define _OUT(_field) offsetof(struct pf_addr_wrap, _field)
1418 static const struct snl_attr_parser ap_addr_wrap[] = {
1419 { .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr },
1420 { .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr },
1421 { .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string },
1422 { .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1423 { .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 },
1424 { .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 },
1425 { .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 },
1426 { .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 },
1427 };
1428 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap);
1429 #undef _OUT
1430
1431 #define _OUT(_field) offsetof(struct pf_rule_addr, _field)
1432 static struct snl_attr_parser ap_rule_addr[] = {
1433 { .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
1434 { .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1435 { .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1436 { .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 },
1437 { .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 },
1438 };
1439 #undef _OUT
1440 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr);
1441
1442 struct snl_parsed_labels
1443 {
1444 char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
1445 uint32_t i;
1446 };
1447
1448 static bool
snl_attr_get_pf_rule_labels(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1449 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1450 const void *arg __unused, void *target)
1451 {
1452 struct snl_parsed_labels *l = (struct snl_parsed_labels *)target;
1453 bool ret;
1454
1455 if (l->i >= PF_RULE_MAX_LABEL_COUNT)
1456 return (E2BIG);
1457
1458 ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE,
1459 l->labels[l->i]);
1460 if (ret)
1461 l->i++;
1462
1463 return (ret);
1464 }
1465
1466 #define _OUT(_field) offsetof(struct nl_parsed_labels, _field)
1467 static const struct snl_attr_parser ap_labels[] = {
1468 { .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels },
1469 };
1470 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels);
1471 #undef _OUT
1472
1473 static bool
snl_attr_get_nested_pf_rule_labels(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1474 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1475 const void *arg __unused, void *target)
1476 {
1477 struct snl_parsed_labels parsed_labels = { };
1478 bool error;
1479
1480 /* Assumes target points to the beginning of the structure */
1481 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels);
1482 if (! error)
1483 return (error);
1484
1485 memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels));
1486
1487 return (true);
1488 }
1489
1490 #define _OUT(_field) offsetof(struct pf_mape_portset, _field)
1491 static const struct snl_attr_parser ap_mape_portset[] = {
1492 { .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 },
1493 { .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 },
1494 {. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 },
1495 };
1496 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset);
1497 #undef _OUT
1498
1499 #define _OUT(_field) offsetof(struct pfctl_pool, _field)
1500 static const struct snl_attr_parser ap_pool[] = {
1501 { .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes },
1502 { .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr },
1503 { .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 },
1504 { .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 },
1505 { .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 },
1506 { .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 },
1507 { .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested },
1508 };
1509 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool);
1510 #undef _OUT
1511
1512 struct nl_parsed_timeouts
1513 {
1514 uint32_t timeouts[PFTM_MAX];
1515 uint32_t i;
1516 };
1517
1518 static bool
snl_attr_get_pf_timeout(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1519 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla,
1520 const void *arg __unused, void *target)
1521 {
1522 struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target;
1523 bool ret;
1524
1525 if (t->i >= PFTM_MAX)
1526 return (E2BIG);
1527
1528 ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]);
1529 if (ret)
1530 t->i++;
1531
1532 return (ret);
1533 }
1534
1535 #define _OUT(_field) offsetof(struct nl_parsed_timeout, _field)
1536 static const struct snl_attr_parser ap_timeouts[] = {
1537 { .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout },
1538 };
1539 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts);
1540 #undef _OUT
1541
1542 static bool
snl_attr_get_nested_timeouts(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1543 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla,
1544 const void *arg __unused, void *target)
1545 {
1546 struct nl_parsed_timeouts parsed_timeouts = { };
1547 bool error;
1548
1549 /* Assumes target points to the beginning of the structure */
1550 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts);
1551 if (! error)
1552 return (error);
1553
1554 memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts));
1555
1556 return (true);
1557 }
1558
1559 #define _OUT(_field) offsetof(struct pf_rule_uid, _field)
1560 static const struct snl_attr_parser ap_rule_uid[] = {
1561 { .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 },
1562 { .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 },
1563 { .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 },
1564 };
1565 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid);
1566 #undef _OUT
1567
1568 struct pfctl_nl_get_rule {
1569 struct pfctl_rule r;
1570 char anchor_call[MAXPATHLEN];
1571 };
1572 #define _OUT(_field) offsetof(struct pfctl_nl_get_rule, _field)
1573 static struct snl_attr_parser ap_getrule[] = {
1574 { .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1575 { .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1576 { .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 },
1577 { .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels },
1578 { .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string },
1579 { .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1580 { .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1581 { .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1582 { .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1583 { .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1584 { .type = PF_RT_RPOOL, .off = _OUT(r.rpool), .arg = &pool_parser, .cb = snl_attr_get_nested },
1585 { .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 },
1586 { .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 },
1587 { .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts },
1588 { .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 },
1589 { .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 },
1590 { .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 },
1591 { .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 },
1592 { .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 },
1593 { .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 },
1594 { .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 },
1595 { .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 },
1596 { .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 },
1597 { .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 },
1598 { .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 },
1599 {. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 },
1600 { .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 },
1601 { .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 },
1602 { .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 },
1603 { .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 },
1604 { .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1605 { .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1606 { .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 },
1607 { .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 },
1608 { .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 },
1609 { .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 },
1610 { .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 },
1611 { .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 },
1612 { .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 },
1613 { .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 },
1614 { .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 },
1615 { .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 },
1616 { .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 },
1617 { .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 },
1618 { .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 },
1619 { .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 },
1620 { .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 },
1621 { .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 },
1622 { .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 },
1623 { .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 },
1624 { .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 },
1625 { .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 },
1626 { .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 },
1627 { .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 },
1628 { .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 },
1629 { .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 },
1630 { .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 },
1631 { .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 },
1632 { .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 },
1633 { .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 },
1634 { .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr },
1635 { .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 },
1636 { .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 },
1637 { .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 },
1638 { .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 },
1639 { .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 },
1640 { .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 },
1641 { .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 },
1642 { .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 },
1643 { .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 },
1644 { .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 },
1645 { .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string },
1646 };
1647 static struct snl_field_parser fp_getrule[] = {};
1648 #undef _OUT
1649 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, fp_getrule, ap_getrule);
1650
1651 int
pfctl_get_clear_rule_h(struct pfctl_handle * h,uint32_t nr,uint32_t ticket,const char * anchor,uint32_t ruleset,struct pfctl_rule * rule,char * anchor_call,bool clear)1652 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket,
1653 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1654 char *anchor_call, bool clear)
1655 {
1656 struct pfctl_nl_get_rule attrs = {};
1657 struct snl_errmsg_data e = {};
1658 struct nlmsghdr *hdr;
1659 struct snl_writer nw;
1660 uint32_t seq_id;
1661 int family_id;
1662
1663 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1664 if (family_id == 0)
1665 return (ENOTSUP);
1666
1667 snl_init_writer(&h->ss, &nw);
1668 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE);
1669 hdr->nlmsg_flags |= NLM_F_DUMP;
1670
1671 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor);
1672 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1673 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr);
1674 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket);
1675 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear);
1676
1677 hdr = snl_finalize_msg(&nw);
1678 if (hdr == NULL)
1679 return (ENOMEM);
1680
1681 seq_id = hdr->nlmsg_seq;
1682 if (! snl_send_message(&h->ss, hdr))
1683 return (ENXIO);
1684
1685 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1686 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs))
1687 continue;
1688 }
1689
1690 memcpy(rule, &attrs.r, sizeof(attrs.r));
1691 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN);
1692
1693 return (e.error);
1694 }
1695
1696 int
pfctl_get_clear_rule(int dev,uint32_t nr,uint32_t ticket,const char * anchor,uint32_t ruleset,struct pfctl_rule * rule,char * anchor_call,bool clear)1697 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket,
1698 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1699 char *anchor_call, bool clear)
1700 {
1701 nvlist_t *nvl;
1702 int ret;
1703
1704 nvl = nvlist_create(0);
1705 if (nvl == 0)
1706 return (ENOMEM);
1707
1708 nvlist_add_number(nvl, "nr", nr);
1709 nvlist_add_number(nvl, "ticket", ticket);
1710 nvlist_add_string(nvl, "anchor", anchor);
1711 nvlist_add_number(nvl, "ruleset", ruleset);
1712
1713 if (clear)
1714 nvlist_add_bool(nvl, "clear_counter", true);
1715
1716 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0)
1717 goto out;
1718
1719 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule);
1720
1721 if (anchor_call)
1722 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1723 MAXPATHLEN);
1724
1725 out:
1726 nvlist_destroy(nvl);
1727 return (ret);
1728 }
1729
1730 int
pfctl_set_keepcounters(int dev,bool keep)1731 pfctl_set_keepcounters(int dev, bool keep)
1732 {
1733 struct pfioc_nv nv;
1734 nvlist_t *nvl;
1735 int ret;
1736
1737 nvl = nvlist_create(0);
1738
1739 nvlist_add_bool(nvl, "keep_counters", keep);
1740
1741 nv.data = nvlist_pack(nvl, &nv.len);
1742 nv.size = nv.len;
1743
1744 nvlist_destroy(nvl);
1745
1746 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv);
1747
1748 free(nv.data);
1749 return (ret);
1750 }
1751
1752 struct pfctl_creator {
1753 uint32_t id;
1754 };
1755 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1756 #define _OUT(_field) offsetof(struct pfctl_creator, _field)
1757 static struct snl_attr_parser ap_creators[] = {
1758 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
1759 };
1760 static struct snl_field_parser fp_creators[] = {
1761 };
1762 #undef _IN
1763 #undef _OUT
1764 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, fp_creators, ap_creators);
1765
1766 static int
pfctl_get_creators_nl(struct snl_state * ss,uint32_t * creators,size_t * len)1767 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len)
1768 {
1769
1770 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1771 size_t i = 0;
1772
1773 struct nlmsghdr *hdr;
1774 struct snl_writer nw;
1775
1776 if (family_id == 0)
1777 return (ENOTSUP);
1778
1779 snl_init_writer(ss, &nw);
1780 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS);
1781 hdr->nlmsg_flags |= NLM_F_DUMP;
1782 hdr = snl_finalize_msg(&nw);
1783 if (hdr == NULL)
1784 return (ENOMEM);
1785 uint32_t seq_id = hdr->nlmsg_seq;
1786
1787 snl_send_message(ss, hdr);
1788
1789 struct snl_errmsg_data e = {};
1790 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1791 struct pfctl_creator c;
1792 bzero(&c, sizeof(c));
1793
1794 if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c))
1795 continue;
1796
1797 creators[i] = c.id;
1798 i++;
1799 if (i > *len)
1800 return (E2BIG);
1801 }
1802
1803 *len = i;
1804
1805 return (0);
1806 }
1807
1808 int
pfctl_get_creatorids(struct pfctl_handle * h,uint32_t * creators,size_t * len)1809 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len)
1810 {
1811 int error;
1812
1813 error = pfctl_get_creators_nl(&h->ss, creators, len);
1814
1815 return (error);
1816 }
1817
1818 static inline bool
snl_attr_get_pfaddr(struct snl_state * ss __unused,struct nlattr * nla,const void * arg __unused,void * target)1819 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla,
1820 const void *arg __unused, void *target)
1821 {
1822 memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla));
1823 return (true);
1824 }
1825
1826 static inline bool
snl_attr_store_ifname(struct snl_state * ss __unused,struct nlattr * nla,const void * arg __unused,void * target)1827 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla,
1828 const void *arg __unused, void *target)
1829 {
1830 size_t maxlen = NLA_DATA_LEN(nla);
1831
1832 if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) {
1833 strlcpy(target, (char *)NLA_DATA(nla), maxlen);
1834 return (true);
1835 }
1836 return (false);
1837 }
1838
1839 #define _OUT(_field) offsetof(struct pfctl_state_peer, _field)
1840 static const struct snl_attr_parser nla_p_speer[] = {
1841 { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 },
1842 { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 },
1843 { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 },
1844 { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 },
1845 { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 },
1846 };
1847 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer);
1848 #undef _OUT
1849
1850 #define _OUT(_field) offsetof(struct pf_state_key_export, _field)
1851 static const struct snl_attr_parser nla_p_skey[] = {
1852 { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr },
1853 { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr },
1854 { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1855 { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1856 };
1857 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey);
1858 #undef _OUT
1859
1860 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1861 #define _OUT(_field) offsetof(struct pfctl_state, _field)
1862 static struct snl_attr_parser ap_state[] = {
1863 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 },
1864 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 },
1865 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname },
1866 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname },
1867 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1868 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1869 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested },
1870 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested },
1871 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr },
1872 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
1873 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 },
1874 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 },
1875 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 },
1876 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 },
1877 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
1878 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
1879 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
1880 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
1881 { .type = PF_ST_AF, .off = _OUT(key[0].af), .cb = snl_attr_get_uint8 },
1882 { .type = PF_ST_PROTO, .off = _OUT(key[0].proto), .cb = snl_attr_get_uint8 },
1883 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 },
1884 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 },
1885 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 },
1886 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 },
1887 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 },
1888 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 },
1889 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 },
1890 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 },
1891 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 },
1892 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 },
1893 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname },
1894 };
1895 static struct snl_field_parser fp_state[] = {
1896 };
1897 #undef _IN
1898 #undef _OUT
1899 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, fp_state, ap_state);
1900
1901 static const struct snl_hdr_parser *all_parsers[] = {
1902 &state_parser, &skey_parser, &speer_parser,
1903 &creator_parser, &getrules_parser
1904 };
1905
1906 static int
pfctl_get_states_nl(struct pfctl_state_filter * filter,struct snl_state * ss,pfctl_get_state_fn f,void * arg)1907 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg)
1908 {
1909 SNL_VERIFY_PARSERS(all_parsers);
1910 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1911 int ret;
1912
1913 struct nlmsghdr *hdr;
1914 struct snl_writer nw;
1915
1916 if (family_id == 0)
1917 return (ENOTSUP);
1918
1919 snl_init_writer(ss, &nw);
1920 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES);
1921 hdr->nlmsg_flags |= NLM_F_DUMP;
1922 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname);
1923 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto);
1924 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af);
1925 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6);
1926 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6);
1927
1928 hdr = snl_finalize_msg(&nw);
1929 if (hdr == NULL)
1930 return (ENOMEM);
1931
1932 uint32_t seq_id = hdr->nlmsg_seq;
1933
1934 snl_send_message(ss, hdr);
1935
1936 struct snl_errmsg_data e = {};
1937 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1938 struct pfctl_state s;
1939 bzero(&s, sizeof(s));
1940 if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s))
1941 continue;
1942
1943 s.key[1].af = s.key[0].af;
1944 s.key[1].proto = s.key[0].proto;
1945
1946 ret = f(&s, arg);
1947 if (ret != 0)
1948 return (ret);
1949 }
1950
1951 return (0);
1952 }
1953
1954 int
pfctl_get_states_iter(pfctl_get_state_fn f,void * arg)1955 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg)
1956 {
1957 struct pfctl_state_filter filter = {};
1958 return (pfctl_get_filtered_states_iter(&filter, f, arg));
1959 }
1960
1961 int
pfctl_get_filtered_states_iter(struct pfctl_state_filter * filter,pfctl_get_state_fn f,void * arg)1962 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
1963 {
1964 struct snl_state ss = {};
1965 int error;
1966
1967 snl_init(&ss, NETLINK_GENERIC);
1968 error = pfctl_get_states_nl(filter, &ss, f, arg);
1969 snl_free(&ss);
1970
1971 return (error);
1972 }
1973
1974 static int
pfctl_append_states(struct pfctl_state * s,void * arg)1975 pfctl_append_states(struct pfctl_state *s, void *arg)
1976 {
1977 struct pfctl_state *new;
1978 struct pfctl_states *states = (struct pfctl_states *)arg;
1979
1980 new = malloc(sizeof(*s));
1981 if (new == NULL)
1982 return (ENOMEM);
1983
1984 memcpy(new, s, sizeof(*s));
1985
1986 TAILQ_INSERT_TAIL(&states->states, new, entry);
1987
1988 return (0);
1989 }
1990
1991 int
pfctl_get_states(int dev __unused,struct pfctl_states * states)1992 pfctl_get_states(int dev __unused, struct pfctl_states *states)
1993 {
1994 int ret;
1995
1996 bzero(states, sizeof(*states));
1997 TAILQ_INIT(&states->states);
1998
1999 ret = pfctl_get_states_iter(pfctl_append_states, states);
2000 if (ret != 0) {
2001 pfctl_free_states(states);
2002 return (ret);
2003 }
2004
2005 return (0);
2006 }
2007
2008 void
pfctl_free_states(struct pfctl_states * states)2009 pfctl_free_states(struct pfctl_states *states)
2010 {
2011 struct pfctl_state *s, *tmp;
2012
2013 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) {
2014 free(s);
2015 }
2016
2017 bzero(states, sizeof(*states));
2018 }
2019
2020 struct pfctl_nl_clear_states {
2021 uint32_t killed;
2022 };
2023 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field)
2024 static struct snl_attr_parser ap_clear_states[] = {
2025 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 },
2026 };
2027 static struct snl_field_parser fp_clear_states[] = {};
2028 #undef _OUT
2029 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, fp_clear_states, ap_clear_states);
2030
2031 static int
_pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed,int cmd)2032 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2033 unsigned int *killed, int cmd)
2034 {
2035 struct snl_writer nw;
2036 struct snl_errmsg_data e = {};
2037 struct pfctl_nl_clear_states attrs = {};
2038 struct nlmsghdr *hdr;
2039 uint32_t seq_id;
2040 int family_id;
2041
2042 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2043 if (family_id == 0)
2044 return (ENOTSUP);
2045
2046 snl_init_writer(&h->ss, &nw);
2047 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
2048 hdr->nlmsg_flags |= NLM_F_DUMP;
2049
2050 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id);
2051 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid));
2052 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction);
2053 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af);
2054 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto);
2055 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src);
2056 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst);
2057 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr);
2058 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname);
2059 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label);
2060 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match);
2061 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat);
2062
2063 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2064 return (ENXIO);
2065
2066 seq_id = hdr->nlmsg_seq;
2067
2068 if (! snl_send_message(&h->ss, hdr))
2069 return (ENXIO);
2070
2071 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2072 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs))
2073 continue;
2074 }
2075
2076 if (killed)
2077 *killed = attrs.killed;
2078
2079 return (e.error);
2080 }
2081
2082 int
pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2083 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2084 unsigned int *killed)
2085 {
2086 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES));
2087 }
2088
2089 int
pfctl_kill_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2090 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2091 unsigned int *killed)
2092 {
2093 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES));
2094 }
2095
2096 static int
_pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed,uint64_t cmd)2097 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2098 unsigned int *killed, uint64_t cmd)
2099 {
2100 struct pfctl_handle *h;
2101 int ret;
2102
2103 h = pfctl_open(PF_DEVICE);
2104 if (h == NULL)
2105 return (ENODEV);
2106
2107 ret = _pfctl_clear_states_h(h, kill, killed, cmd);
2108 pfctl_close(h);
2109
2110 return (ret);
2111 }
2112
2113 int
pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2114 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2115 unsigned int *killed)
2116 {
2117 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES));
2118 }
2119
2120 int
pfctl_kill_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2121 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed)
2122 {
2123 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES));
2124 }
2125
2126 int
pfctl_clear_rules(int dev,const char * anchorname)2127 pfctl_clear_rules(int dev, const char *anchorname)
2128 {
2129 struct pfioc_trans trans;
2130 struct pfioc_trans_e transe[2];
2131 int ret;
2132
2133 bzero(&trans, sizeof(trans));
2134 bzero(&transe, sizeof(transe));
2135
2136 transe[0].rs_num = PF_RULESET_SCRUB;
2137 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2138 >= sizeof(transe[0].anchor))
2139 return (E2BIG);
2140
2141 transe[1].rs_num = PF_RULESET_FILTER;
2142 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2143 >= sizeof(transe[1].anchor))
2144 return (E2BIG);
2145
2146 trans.size = 2;
2147 trans.esize = sizeof(transe[0]);
2148 trans.array = transe;
2149
2150 ret = ioctl(dev, DIOCXBEGIN, &trans);
2151 if (ret != 0)
2152 return (ret);
2153 return ioctl(dev, DIOCXCOMMIT, &trans);
2154 }
2155
2156 int
pfctl_clear_nat(int dev,const char * anchorname)2157 pfctl_clear_nat(int dev, const char *anchorname)
2158 {
2159 struct pfioc_trans trans;
2160 struct pfioc_trans_e transe[3];
2161 int ret;
2162
2163 bzero(&trans, sizeof(trans));
2164 bzero(&transe, sizeof(transe));
2165
2166 transe[0].rs_num = PF_RULESET_NAT;
2167 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2168 >= sizeof(transe[0].anchor))
2169 return (E2BIG);
2170
2171 transe[1].rs_num = PF_RULESET_BINAT;
2172 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2173 >= sizeof(transe[0].anchor))
2174 return (E2BIG);
2175
2176 transe[2].rs_num = PF_RULESET_RDR;
2177 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor))
2178 >= sizeof(transe[2].anchor))
2179 return (E2BIG);
2180
2181 trans.size = 3;
2182 trans.esize = sizeof(transe[0]);
2183 trans.array = transe;
2184
2185 ret = ioctl(dev, DIOCXBEGIN, &trans);
2186 if (ret != 0)
2187 return (ret);
2188 return ioctl(dev, DIOCXCOMMIT, &trans);
2189 }
2190 int
pfctl_clear_eth_rules(int dev,const char * anchorname)2191 pfctl_clear_eth_rules(int dev, const char *anchorname)
2192 {
2193 struct pfioc_trans trans;
2194 struct pfioc_trans_e transe;
2195 int ret;
2196
2197 bzero(&trans, sizeof(trans));
2198 bzero(&transe, sizeof(transe));
2199
2200 transe.rs_num = PF_RULESET_ETH;
2201 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor))
2202 >= sizeof(transe.anchor))
2203 return (E2BIG);
2204
2205 trans.size = 1;
2206 trans.esize = sizeof(transe);
2207 trans.array = &transe;
2208
2209 ret = ioctl(dev, DIOCXBEGIN, &trans);
2210 if (ret != 0)
2211 return (ret);
2212 return ioctl(dev, DIOCXCOMMIT, &trans);
2213 }
2214
2215 static int
_pfctl_get_limit(int dev,const int index,uint * limit)2216 _pfctl_get_limit(int dev, const int index, uint *limit)
2217 {
2218 struct pfioc_limit pl;
2219
2220 bzero(&pl, sizeof(pl));
2221 pl.index = index;
2222
2223 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1)
2224 return (errno);
2225
2226 *limit = pl.limit;
2227
2228 return (0);
2229 }
2230
2231 int
pfctl_set_syncookies(int dev,const struct pfctl_syncookies * s)2232 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s)
2233 {
2234 struct pfioc_nv nv;
2235 nvlist_t *nvl;
2236 int ret;
2237 uint state_limit;
2238 uint64_t lim, hi, lo;
2239
2240 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2241 if (ret != 0)
2242 return (ret);
2243
2244 lim = state_limit;
2245 hi = lim * s->highwater / 100;
2246 lo = lim * s->lowwater / 100;
2247
2248 if (lo == hi)
2249 hi++;
2250
2251 nvl = nvlist_create(0);
2252
2253 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER);
2254 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE);
2255 nvlist_add_number(nvl, "highwater", hi);
2256 nvlist_add_number(nvl, "lowwater", lo);
2257
2258 nv.data = nvlist_pack(nvl, &nv.len);
2259 nv.size = nv.len;
2260 nvlist_destroy(nvl);
2261 nvl = NULL;
2262
2263 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv);
2264
2265 free(nv.data);
2266 return (ret);
2267 }
2268
2269 int
pfctl_get_syncookies(int dev,struct pfctl_syncookies * s)2270 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s)
2271 {
2272 nvlist_t *nvl;
2273 int ret;
2274 uint state_limit;
2275 bool enabled, adaptive;
2276
2277 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2278 if (ret != 0)
2279 return (ret);
2280
2281 bzero(s, sizeof(*s));
2282
2283 nvl = nvlist_create(0);
2284
2285 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) {
2286 ret = errno;
2287 goto out;
2288 }
2289
2290 enabled = nvlist_get_bool(nvl, "enabled");
2291 adaptive = nvlist_get_bool(nvl, "adaptive");
2292
2293 if (enabled) {
2294 if (adaptive)
2295 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE;
2296 else
2297 s->mode = PFCTL_SYNCOOKIES_ALWAYS;
2298 } else {
2299 s->mode = PFCTL_SYNCOOKIES_NEVER;
2300 }
2301
2302 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit;
2303 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit;
2304 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states");
2305
2306 out:
2307 nvlist_destroy(nvl);
2308 return (ret);
2309 }
2310
2311 int
pfctl_table_add_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * nadd,int flags)2312 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2313 *addr, int size, int *nadd, int flags)
2314 {
2315 struct pfioc_table io;
2316
2317 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2318 return (EINVAL);
2319 }
2320 bzero(&io, sizeof io);
2321 io.pfrio_flags = flags;
2322 io.pfrio_table = *tbl;
2323 io.pfrio_buffer = addr;
2324 io.pfrio_esize = sizeof(*addr);
2325 io.pfrio_size = size;
2326
2327 if (ioctl(dev, DIOCRADDADDRS, &io))
2328 return (errno);
2329 if (nadd != NULL)
2330 *nadd = io.pfrio_nadd;
2331 return (0);
2332 }
2333
2334 int
pfctl_table_del_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * ndel,int flags)2335 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2336 *addr, int size, int *ndel, int flags)
2337 {
2338 struct pfioc_table io;
2339
2340 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2341 return (EINVAL);
2342 }
2343 bzero(&io, sizeof io);
2344 io.pfrio_flags = flags;
2345 io.pfrio_table = *tbl;
2346 io.pfrio_buffer = addr;
2347 io.pfrio_esize = sizeof(*addr);
2348 io.pfrio_size = size;
2349
2350 if (ioctl(dev, DIOCRDELADDRS, &io))
2351 return (errno);
2352 if (ndel != NULL)
2353 *ndel = io.pfrio_ndel;
2354 return (0);
2355 }
2356
2357 int
pfctl_table_set_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * size2,int * nadd,int * ndel,int * nchange,int flags)2358 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2359 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags)
2360 {
2361 struct pfioc_table io;
2362
2363 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2364 return (EINVAL);
2365 }
2366 bzero(&io, sizeof io);
2367 io.pfrio_flags = flags;
2368 io.pfrio_table = *tbl;
2369 io.pfrio_buffer = addr;
2370 io.pfrio_esize = sizeof(*addr);
2371 io.pfrio_size = size;
2372 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0;
2373 if (ioctl(dev, DIOCRSETADDRS, &io))
2374 return (-1);
2375 if (nadd != NULL)
2376 *nadd = io.pfrio_nadd;
2377 if (ndel != NULL)
2378 *ndel = io.pfrio_ndel;
2379 if (nchange != NULL)
2380 *nchange = io.pfrio_nchange;
2381 if (size2 != NULL)
2382 *size2 = io.pfrio_size2;
2383 return (0);
2384 }
2385
pfctl_table_get_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int * size,int flags)2386 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr,
2387 int *size, int flags)
2388 {
2389 struct pfioc_table io;
2390
2391 if (tbl == NULL || size == NULL || *size < 0 ||
2392 (*size && addr == NULL)) {
2393 return (EINVAL);
2394 }
2395 bzero(&io, sizeof io);
2396 io.pfrio_flags = flags;
2397 io.pfrio_table = *tbl;
2398 io.pfrio_buffer = addr;
2399 io.pfrio_esize = sizeof(*addr);
2400 io.pfrio_size = *size;
2401 if (ioctl(dev, DIOCRGETADDRS, &io))
2402 return (-1);
2403 *size = io.pfrio_size;
2404 return (0);
2405 }
2406
2407 int
pfctl_set_statusif(struct pfctl_handle * h,const char * ifname)2408 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname)
2409 {
2410 struct snl_writer nw;
2411 struct snl_errmsg_data e = {};
2412 struct nlmsghdr *hdr;
2413 uint32_t seq_id;
2414 int family_id;
2415
2416 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2417 if (family_id == 0)
2418 return (ENOTSUP);
2419
2420 snl_init_writer(&h->ss, &nw);
2421 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF);
2422
2423 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname);
2424
2425 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2426 return (ENXIO);
2427
2428 seq_id = hdr->nlmsg_seq;
2429
2430 if (! snl_send_message(&h->ss, hdr))
2431 return (ENXIO);
2432
2433 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2434 }
2435
2436 return (e.error);
2437 }
2438
2439 #define _IN(_field) offsetof(struct genlmsghdr, _field)
2440 #define _OUT(_field) offsetof(struct pfctl_natlook, _field)
2441 static struct snl_attr_parser ap_natlook[] = {
2442 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr },
2443 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr },
2444 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 },
2445 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 },
2446 };
2447 static struct snl_field_parser fp_natlook[] = {};
2448 #undef _IN
2449 #undef _OUT
2450 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, fp_natlook, ap_natlook);
2451
2452 int
pfctl_natlook(struct pfctl_handle * h,const struct pfctl_natlook_key * k,struct pfctl_natlook * r)2453 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k,
2454 struct pfctl_natlook *r)
2455 {
2456 struct snl_writer nw;
2457 struct snl_errmsg_data e = {};
2458 struct nlmsghdr *hdr;
2459 uint32_t seq_id;
2460 int family_id;
2461
2462 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2463 if (family_id == 0)
2464 return (ENOTSUP);
2465
2466 snl_init_writer(&h->ss, &nw);
2467 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK);
2468 hdr->nlmsg_flags |= NLM_F_DUMP;
2469
2470 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af);
2471 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction);
2472 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto);
2473 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6);
2474 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6);
2475 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport);
2476 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport);
2477
2478 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2479 return (ENXIO);
2480
2481 seq_id = hdr->nlmsg_seq;
2482
2483 if (! snl_send_message(&h->ss, hdr))
2484 return (ENXIO);
2485
2486 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2487 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r))
2488 continue;
2489 }
2490
2491 return (e.error);
2492 }
2493
2494 int
pfctl_set_debug(struct pfctl_handle * h,uint32_t level)2495 pfctl_set_debug(struct pfctl_handle *h, uint32_t level)
2496 {
2497 struct snl_writer nw;
2498 struct snl_errmsg_data e = {};
2499 struct nlmsghdr *hdr;
2500 uint32_t seq_id;
2501 int family_id;
2502
2503 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2504 if (family_id == 0)
2505 return (ENOTSUP);
2506
2507 snl_init_writer(&h->ss, &nw);
2508 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG);
2509
2510 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level);
2511
2512 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2513 return (ENXIO);
2514
2515 seq_id = hdr->nlmsg_seq;
2516
2517 if (! snl_send_message(&h->ss, hdr))
2518 return (ENXIO);
2519
2520 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2521 }
2522
2523 return (e.error);
2524 }
2525
2526 int
pfctl_set_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t seconds)2527 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds)
2528 {
2529 struct snl_writer nw;
2530 struct snl_errmsg_data e = {};
2531 struct nlmsghdr *hdr;
2532 uint32_t seq_id;
2533 int family_id;
2534
2535 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2536 if (family_id == 0)
2537 return (ENOTSUP);
2538
2539 snl_init_writer(&h->ss, &nw);
2540 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT);
2541
2542 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2543 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds);
2544
2545 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2546 return (ENXIO);
2547
2548 seq_id = hdr->nlmsg_seq;
2549
2550 if (! snl_send_message(&h->ss, hdr))
2551 return (ENXIO);
2552
2553 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2554 }
2555
2556 return (e.error);
2557 }
2558
2559 struct pfctl_nl_timeout {
2560 uint32_t seconds;
2561 };
2562 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field)
2563 static struct snl_attr_parser ap_get_timeout[] = {
2564 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
2565 };
2566 static struct snl_field_parser fp_get_timeout[] = {};
2567 #undef _OUT
2568 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, fp_get_timeout, ap_get_timeout);
2569
2570 int
pfctl_get_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t * seconds)2571 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds)
2572 {
2573 struct snl_writer nw;
2574 struct pfctl_nl_timeout to = {};
2575 struct snl_errmsg_data e = {};
2576 struct nlmsghdr *hdr;
2577 uint32_t seq_id;
2578 int family_id;
2579
2580 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2581 if (family_id == 0)
2582 return (ENOTSUP);
2583
2584 snl_init_writer(&h->ss, &nw);
2585 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT);
2586 hdr->nlmsg_flags |= NLM_F_DUMP;
2587
2588 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2589
2590 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2591 return (ENXIO);
2592
2593 seq_id = hdr->nlmsg_seq;
2594
2595 if (! snl_send_message(&h->ss, hdr))
2596 return (ENXIO);
2597
2598 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2599 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to))
2600 continue;
2601 }
2602
2603 if (seconds != NULL)
2604 *seconds = to.seconds;
2605
2606 return (e.error);
2607 }
2608
2609 int
pfctl_set_limit(struct pfctl_handle * h,const int index,const uint limit)2610 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit)
2611 {
2612 struct snl_writer nw;
2613 struct snl_errmsg_data e = {};
2614 struct nlmsghdr *hdr;
2615 uint32_t seq_id;
2616 int family_id;
2617
2618 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2619 if (family_id == 0)
2620 return (ENOTSUP);
2621
2622 snl_init_writer(&h->ss, &nw);
2623 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT);
2624
2625 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2626 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit);
2627
2628 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2629 return (ENXIO);
2630
2631 seq_id = hdr->nlmsg_seq;
2632
2633 if (! snl_send_message(&h->ss, hdr))
2634 return (ENXIO);
2635
2636 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2637 }
2638
2639 return (e.error);
2640 }
2641
2642 struct pfctl_nl_limit {
2643 unsigned int limit;
2644 };
2645 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field)
2646 static struct snl_attr_parser ap_get_limit[] = {
2647 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
2648 };
2649 static struct snl_field_parser fp_get_limit[] = {};
2650 #undef _OUT
2651 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, fp_get_limit, ap_get_limit);
2652
2653 int
pfctl_get_limit(struct pfctl_handle * h,const int index,uint * limit)2654 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit)
2655 {
2656 struct snl_writer nw;
2657 struct pfctl_nl_limit li = {};
2658 struct snl_errmsg_data e = {};
2659 struct nlmsghdr *hdr;
2660 uint32_t seq_id;
2661 int family_id;
2662
2663 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2664 if (family_id == 0)
2665 return (ENOTSUP);
2666
2667 snl_init_writer(&h->ss, &nw);
2668 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT);
2669 hdr->nlmsg_flags |= NLM_F_DUMP;
2670
2671 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2672
2673 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2674 return (ENXIO);
2675
2676 seq_id = hdr->nlmsg_seq;
2677
2678 if (! snl_send_message(&h->ss, hdr))
2679 return (ENXIO);
2680
2681 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2682 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li))
2683 continue;
2684 }
2685
2686 if (limit != NULL)
2687 *limit = li.limit;
2688
2689 return (e.error);
2690 }
2691
2692 struct pfctl_nl_begin_addrs {
2693 uint32_t ticket;
2694 };
2695 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field)
2696 static struct snl_attr_parser ap_begin_addrs[] = {
2697 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2698 };
2699 static struct snl_field_parser fp_begin_addrs[] = {};
2700 #undef _OUT
2701 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, fp_begin_addrs, ap_begin_addrs);
2702
2703 int
pfctl_begin_addrs(struct pfctl_handle * h,uint32_t * ticket)2704 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket)
2705 {
2706 struct snl_writer nw;
2707 struct pfctl_nl_begin_addrs attrs = {};
2708 struct snl_errmsg_data e = {};
2709 struct nlmsghdr *hdr;
2710 uint32_t seq_id;
2711 int family_id;
2712
2713 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2714 if (family_id == 0)
2715 return (ENOTSUP);
2716
2717 snl_init_writer(&h->ss, &nw);
2718 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS);
2719 hdr->nlmsg_flags |= NLM_F_DUMP;
2720
2721 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2722 return (ENXIO);
2723
2724 seq_id = hdr->nlmsg_seq;
2725
2726 if (! snl_send_message(&h->ss, hdr))
2727 return (ENXIO);
2728
2729 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2730 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs))
2731 continue;
2732 }
2733
2734 if (ticket != NULL)
2735 *ticket = attrs.ticket;
2736
2737 return (e.error);
2738 }
2739
2740