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 static void _pfctl_verify_parsers(void);
73
74 struct pfctl_handle *
pfctl_open(const char * pf_device)75 pfctl_open(const char *pf_device)
76 {
77 struct pfctl_handle *h;
78
79 _pfctl_verify_parsers();
80
81 h = calloc(1, sizeof(struct pfctl_handle));
82
83 h->fd = open(pf_device, O_RDWR);
84 if (h->fd < 0)
85 goto error;
86
87 if (!snl_init(&h->ss, NETLINK_GENERIC))
88 goto error;
89
90 return (h);
91 error:
92 if (h->fd != -1)
93 close(h->fd);
94 snl_free(&h->ss);
95 free(h);
96
97 return (NULL);
98 }
99
100 void
pfctl_close(struct pfctl_handle * h)101 pfctl_close(struct pfctl_handle *h)
102 {
103 close(h->fd);
104 snl_free(&h->ss);
105 free(h);
106 }
107
108 int
pfctl_fd(struct pfctl_handle * h)109 pfctl_fd(struct pfctl_handle *h)
110 {
111 return (h->fd);
112 }
113
114 static int
pfctl_do_netlink_cmd(struct pfctl_handle * h,uint cmd)115 pfctl_do_netlink_cmd(struct pfctl_handle *h, uint cmd)
116 {
117 struct snl_errmsg_data e = {};
118 struct snl_writer nw;
119 struct nlmsghdr *hdr;
120 uint32_t seq_id;
121 int family_id;
122
123 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
124 if (family_id == 0)
125 return (ENOTSUP);
126
127 snl_init_writer(&h->ss, &nw);
128 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
129
130 hdr = snl_finalize_msg(&nw);
131 if (hdr == NULL)
132 return (ENOMEM);
133 seq_id = hdr->nlmsg_seq;
134
135 snl_send_message(&h->ss, hdr);
136
137 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
138 }
139
140 return (e.error);
141 }
142
143 static int
pfctl_do_ioctl(int dev,uint cmd,size_t size,nvlist_t ** nvl)144 pfctl_do_ioctl(int dev, uint cmd, size_t size, nvlist_t **nvl)
145 {
146 struct pfioc_nv nv;
147 void *data;
148 size_t nvlen;
149 int ret;
150
151 data = nvlist_pack(*nvl, &nvlen);
152 if (nvlen > size)
153 size = nvlen;
154
155 retry:
156 nv.data = malloc(size);
157 if (nv.data == NULL) {
158 ret = ENOMEM;
159 goto out;
160 }
161
162 memcpy(nv.data, data, nvlen);
163
164 nv.len = nvlen;
165 nv.size = size;
166
167 ret = ioctl(dev, cmd, &nv);
168 if (ret == -1 && errno == ENOSPC) {
169 size *= 2;
170 free(nv.data);
171 goto retry;
172 }
173
174 nvlist_destroy(*nvl);
175 *nvl = NULL;
176
177 if (ret == 0) {
178 *nvl = nvlist_unpack(nv.data, nv.len, 0);
179 if (*nvl == NULL) {
180 ret = EIO;
181 goto out;
182 }
183 } else {
184 ret = errno;
185 }
186
187 out:
188 free(data);
189 free(nv.data);
190
191 return (ret);
192 }
193
194 static void
pf_nvuint_8_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint8_t * numbers,size_t * nelems)195 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems,
196 uint8_t *numbers, size_t *nelems)
197 {
198 const uint64_t *tmp;
199 size_t elems;
200
201 tmp = nvlist_get_number_array(nvl, name, &elems);
202 assert(elems <= maxelems);
203
204 for (size_t i = 0; i < elems; i++)
205 numbers[i] = tmp[i];
206
207 if (nelems)
208 *nelems = elems;
209 }
210
211 static void
pf_nvuint_16_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint16_t * numbers,size_t * nelems)212 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems,
213 uint16_t *numbers, size_t *nelems)
214 {
215 const uint64_t *tmp;
216 size_t elems;
217
218 tmp = nvlist_get_number_array(nvl, name, &elems);
219 assert(elems <= maxelems);
220
221 for (size_t i = 0; i < elems; i++)
222 numbers[i] = tmp[i];
223
224 if (nelems)
225 *nelems = elems;
226 }
227
228 static void
pf_nvuint_32_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint32_t * numbers,size_t * nelems)229 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems,
230 uint32_t *numbers, size_t *nelems)
231 {
232 const uint64_t *tmp;
233 size_t elems;
234
235 tmp = nvlist_get_number_array(nvl, name, &elems);
236
237 for (size_t i = 0; i < elems && i < maxelems; i++)
238 numbers[i] = tmp[i];
239
240 if (nelems)
241 *nelems = elems;
242 }
243
244 static void
pf_nvuint_64_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint64_t * numbers,size_t * nelems)245 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems,
246 uint64_t *numbers, size_t *nelems)
247 {
248 const uint64_t *tmp;
249 size_t elems;
250
251 tmp = nvlist_get_number_array(nvl, name, &elems);
252 assert(elems <= maxelems);
253
254 for (size_t i = 0; i < elems; i++)
255 numbers[i] = tmp[i];
256
257 if (nelems)
258 *nelems = elems;
259 }
260
261 int
pfctl_startstop(struct pfctl_handle * h,int start)262 pfctl_startstop(struct pfctl_handle *h, int start)
263 {
264 return (pfctl_do_netlink_cmd(h, start ? PFNL_CMD_START : PFNL_CMD_STOP));
265 }
266
267 static void
_pfctl_get_status_counters(const nvlist_t * nvl,struct pfctl_status_counters * counters)268 _pfctl_get_status_counters(const nvlist_t *nvl,
269 struct pfctl_status_counters *counters)
270 {
271 const uint64_t *ids, *counts;
272 const char *const *names;
273 size_t id_len, counter_len, names_len;
274
275 ids = nvlist_get_number_array(nvl, "ids", &id_len);
276 counts = nvlist_get_number_array(nvl, "counters", &counter_len);
277 names = nvlist_get_string_array(nvl, "names", &names_len);
278 assert(id_len == counter_len);
279 assert(counter_len == names_len);
280
281 TAILQ_INIT(counters);
282
283 for (size_t i = 0; i < id_len; i++) {
284 struct pfctl_status_counter *c;
285
286 c = malloc(sizeof(*c));
287 if (c == NULL)
288 continue;
289
290 c->id = ids[i];
291 c->counter = counts[i];
292 c->name = strdup(names[i]);
293
294 TAILQ_INSERT_TAIL(counters, c, entry);
295 }
296 }
297
298 #define _OUT(_field) offsetof(struct pfctl_status_counter, _field)
299 static const struct snl_attr_parser ap_counter[] = {
300 { .type = PF_C_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_uint64 },
301 { .type = PF_C_NAME, .off = _OUT(name), .cb = snl_attr_get_string },
302 { .type = PF_C_ID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
303 };
304 SNL_DECLARE_ATTR_PARSER(counter_parser, ap_counter);
305 #undef _OUT
306
307 static bool
snl_attr_get_counters(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)308 snl_attr_get_counters(struct snl_state *ss, struct nlattr *nla,
309 const void *arg __unused, void *target)
310 {
311 struct pfctl_status_counter counter = {};
312 struct pfctl_status_counter *c;
313 bool error;
314
315 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &counter_parser, &counter);
316 if (! error)
317 return (error);
318
319 c = malloc(sizeof(*c));
320 if (c == NULL)
321 return (false);
322
323 c->id = counter.id;
324 c->counter = counter.counter;
325 c->name = strdup(counter.name);
326
327 TAILQ_INSERT_TAIL((struct pfctl_status_counters *)target, c, entry);
328
329 return (error);
330 }
331
332 struct snl_uint64_array {
333 uint64_t *array;
334 size_t count;
335 size_t max;
336 };
337 static bool
snl_attr_get_uint64_element(struct snl_state * ss,struct nlattr * nla,const void * arg,void * target)338 snl_attr_get_uint64_element(struct snl_state *ss, struct nlattr *nla,
339 const void *arg, void *target)
340 {
341 bool error;
342 uint64_t value;
343 struct snl_uint64_array *t = (struct snl_uint64_array *)target;
344
345 if (t->count >= t->max)
346 return (false);
347
348 error = snl_attr_get_uint64(ss, nla, arg, &value);
349 if (! error)
350 return (error);
351
352 t->array[t->count++] = value;
353
354 return (true);
355 }
356
357 static const struct snl_attr_parser ap_array[] = {
358 { .cb = snl_attr_get_uint64_element },
359 };
360 SNL_DECLARE_ATTR_PARSER(array_parser, ap_array);
361 static bool
snl_attr_get_uint64_array(struct snl_state * ss,struct nlattr * nla,const void * arg,void * target)362 snl_attr_get_uint64_array(struct snl_state *ss, struct nlattr *nla,
363 const void *arg, void *target)
364 {
365 struct snl_uint64_array a = {
366 .array = target,
367 .count = 0,
368 .max = (size_t)arg,
369 };
370 bool error;
371
372 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a);
373 if (! error)
374 return (error);
375
376 return (true);
377 }
378
379 #define _OUT(_field) offsetof(struct pfctl_status, _field)
380 static const struct snl_attr_parser ap_getstatus[] = {
381 { .type = PF_GS_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
382 { .type = PF_GS_RUNNING, .off = _OUT(running), .cb = snl_attr_get_bool },
383 { .type = PF_GS_SINCE, .off = _OUT(since), .cb = snl_attr_get_uint32 },
384 { .type = PF_GS_DEBUG, .off = _OUT(debug), .cb = snl_attr_get_uint32 },
385 { .type = PF_GS_HOSTID, .off = _OUT(hostid), .cb = snl_attr_get_uint32 },
386 { .type = PF_GS_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
387 { .type = PF_GS_SRC_NODES, .off = _OUT(src_nodes), .cb = snl_attr_get_uint32 },
388 { .type = PF_GS_REASSEMBLE, .off = _OUT(reass), .cb = snl_attr_get_uint32 },
389 { .type = PF_GS_SYNCOOKIES_ACTIVE, .off = _OUT(syncookies_active), .cb = snl_attr_get_uint32 },
390 { .type = PF_GS_COUNTERS, .off = _OUT(counters), .cb = snl_attr_get_counters },
391 { .type = PF_GS_LCOUNTERS, .off = _OUT(lcounters), .cb = snl_attr_get_counters },
392 { .type = PF_GS_FCOUNTERS, .off = _OUT(fcounters), .cb = snl_attr_get_counters },
393 { .type = PF_GS_SCOUNTERS, .off = _OUT(scounters), .cb = snl_attr_get_counters },
394 { .type = PF_GS_CHKSUM, .off = _OUT(pf_chksum), .arg_u32 = PF_MD5_DIGEST_LENGTH, .cb = snl_attr_get_bytes },
395 { .type = PF_GS_PCOUNTERS, .off = _OUT(pcounters), .arg_u32 = 2 * 2 * 2, .cb = snl_attr_get_uint64_array },
396 { .type = PF_GS_BCOUNTERS, .off = _OUT(bcounters), .arg_u32 = 2 * 2, .cb = snl_attr_get_uint64_array },
397 { .type = PF_GS_NCOUNTERS, .off = _OUT(ncounters), .cb = snl_attr_get_counters },
398 { .type = PF_GS_FRAGMENTS, .off = _OUT(fragments), .cb = snl_attr_get_uint64 },
399 };
400 SNL_DECLARE_PARSER(getstatus_parser, struct genlmsghdr, snl_f_p_empty, ap_getstatus);
401 #undef _OUT
402
403 struct pfctl_status *
pfctl_get_status_h(struct pfctl_handle * h)404 pfctl_get_status_h(struct pfctl_handle *h)
405 {
406 struct pfctl_status *status;
407 struct snl_errmsg_data e = {};
408 struct nlmsghdr *hdr;
409 struct snl_writer nw;
410 uint32_t seq_id;
411 int family_id;
412
413 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
414 if (family_id == 0)
415 return (NULL);
416
417 snl_init_writer(&h->ss, &nw);
418 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_STATUS);
419 hdr->nlmsg_flags |= NLM_F_DUMP;
420
421 hdr = snl_finalize_msg(&nw);
422 if (hdr == NULL) {
423 return (NULL);
424 }
425
426 seq_id = hdr->nlmsg_seq;
427 if (! snl_send_message(&h->ss, hdr))
428 return (NULL);
429
430 status = calloc(1, sizeof(*status));
431 if (status == NULL)
432 return (NULL);
433 TAILQ_INIT(&status->counters);
434 TAILQ_INIT(&status->lcounters);
435 TAILQ_INIT(&status->fcounters);
436 TAILQ_INIT(&status->scounters);
437 TAILQ_INIT(&status->ncounters);
438
439 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
440 if (! snl_parse_nlmsg(&h->ss, hdr, &getstatus_parser, status))
441 continue;
442 }
443
444 return (status);
445 }
446
447 struct pfctl_status *
pfctl_get_status(int dev)448 pfctl_get_status(int dev)
449 {
450 struct pfctl_status *status;
451 nvlist_t *nvl;
452 size_t len;
453 const void *chksum;
454
455 status = calloc(1, sizeof(*status));
456 if (status == NULL)
457 return (NULL);
458
459 nvl = nvlist_create(0);
460
461 if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) {
462 nvlist_destroy(nvl);
463 free(status);
464 return (NULL);
465 }
466
467 status->running = nvlist_get_bool(nvl, "running");
468 status->since = nvlist_get_number(nvl, "since");
469 status->debug = nvlist_get_number(nvl, "debug");
470 status->hostid = ntohl(nvlist_get_number(nvl, "hostid"));
471 status->states = nvlist_get_number(nvl, "states");
472 status->src_nodes = nvlist_get_number(nvl, "src_nodes");
473 status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active");
474 status->reass = nvlist_get_number(nvl, "reass");
475
476 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"),
477 IFNAMSIZ);
478 chksum = nvlist_get_binary(nvl, "chksum", &len);
479 assert(len == PF_MD5_DIGEST_LENGTH);
480 memcpy(status->pf_chksum, chksum, len);
481
482 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"),
483 &status->counters);
484 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"),
485 &status->lcounters);
486 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"),
487 &status->fcounters);
488 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"),
489 &status->scounters);
490
491 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2,
492 (uint64_t *)status->pcounters, NULL);
493 pf_nvuint_64_array(nvl, "bcounters", 2 * 2,
494 (uint64_t *)status->bcounters, NULL);
495
496 nvlist_destroy(nvl);
497
498 return (status);
499 }
500 int
pfctl_clear_status(struct pfctl_handle * h)501 pfctl_clear_status(struct pfctl_handle *h)
502 {
503 return (pfctl_do_netlink_cmd(h, PFNL_CMD_CLEAR_STATUS));
504 }
505
506 static uint64_t
_pfctl_status_counter(struct pfctl_status_counters * counters,uint64_t id)507 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id)
508 {
509 struct pfctl_status_counter *c;
510
511 TAILQ_FOREACH(c, counters, entry) {
512 if (c->id == id)
513 return (c->counter);
514 }
515
516 return (0);
517 }
518
519 uint64_t
pfctl_status_counter(struct pfctl_status * status,int id)520 pfctl_status_counter(struct pfctl_status *status, int id)
521 {
522 return (_pfctl_status_counter(&status->counters, id));
523 }
524
525 uint64_t
pfctl_status_lcounter(struct pfctl_status * status,int id)526 pfctl_status_lcounter(struct pfctl_status *status, int id)
527 {
528 return (_pfctl_status_counter(&status->lcounters, id));
529 }
530
531 uint64_t
pfctl_status_fcounter(struct pfctl_status * status,int id)532 pfctl_status_fcounter(struct pfctl_status *status, int id)
533 {
534 return (_pfctl_status_counter(&status->fcounters, id));
535 }
536
537 uint64_t
pfctl_status_scounter(struct pfctl_status * status,int id)538 pfctl_status_scounter(struct pfctl_status *status, int id)
539 {
540 return (_pfctl_status_counter(&status->scounters, id));
541 }
542
543 void
pfctl_free_status(struct pfctl_status * status)544 pfctl_free_status(struct pfctl_status *status)
545 {
546 struct pfctl_status_counter *c, *tmp;
547
548 if (status == NULL)
549 return;
550
551 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) {
552 free(c->name);
553 free(c);
554 }
555 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) {
556 free(c->name);
557 free(c);
558 }
559 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) {
560 free(c->name);
561 free(c);
562 }
563 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) {
564 free(c->name);
565 free(c);
566 }
567 TAILQ_FOREACH_SAFE(c, &status->ncounters, entry, tmp) {
568 free(c->name);
569 free(c);
570 }
571
572 free(status);
573 }
574
575 static void
pfctl_nv_add_addr(nvlist_t * nvparent,const char * name,const struct pf_addr * addr)576 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name,
577 const struct pf_addr *addr)
578 {
579 nvlist_t *nvl = nvlist_create(0);
580
581 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr));
582
583 nvlist_add_nvlist(nvparent, name, nvl);
584 nvlist_destroy(nvl);
585 }
586
587 static void
pf_nvaddr_to_addr(const nvlist_t * nvl,struct pf_addr * addr)588 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr)
589 {
590 size_t len;
591 const void *data;
592
593 data = nvlist_get_binary(nvl, "addr", &len);
594 assert(len == sizeof(struct pf_addr));
595 memcpy(addr, data, len);
596 }
597
598 static void
pfctl_nv_add_addr_wrap(nvlist_t * nvparent,const char * name,const struct pf_addr_wrap * addr)599 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name,
600 const struct pf_addr_wrap *addr)
601 {
602 nvlist_t *nvl = nvlist_create(0);
603
604 nvlist_add_number(nvl, "type", addr->type);
605 nvlist_add_number(nvl, "iflags", addr->iflags);
606 if (addr->type == PF_ADDR_DYNIFTL)
607 nvlist_add_string(nvl, "ifname", addr->v.ifname);
608 if (addr->type == PF_ADDR_TABLE)
609 nvlist_add_string(nvl, "tblname", addr->v.tblname);
610 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr);
611 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask);
612
613 nvlist_add_nvlist(nvparent, name, nvl);
614 nvlist_destroy(nvl);
615 }
616
617 static void
pf_nvaddr_wrap_to_addr_wrap(const nvlist_t * nvl,struct pf_addr_wrap * addr)618 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr)
619 {
620 bzero(addr, sizeof(*addr));
621
622 addr->type = nvlist_get_number(nvl, "type");
623 addr->iflags = nvlist_get_number(nvl, "iflags");
624 if (addr->type == PF_ADDR_DYNIFTL) {
625 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"),
626 IFNAMSIZ);
627 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt");
628 }
629 if (addr->type == PF_ADDR_TABLE) {
630 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"),
631 PF_TABLE_NAME_SIZE);
632 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt");
633 }
634
635 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr);
636 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask);
637 }
638
639 static void
pfctl_nv_add_rule_addr(nvlist_t * nvparent,const char * name,const struct pf_rule_addr * addr)640 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name,
641 const struct pf_rule_addr *addr)
642 {
643 uint64_t ports[2];
644 nvlist_t *nvl = nvlist_create(0);
645
646 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr);
647 ports[0] = addr->port[0];
648 ports[1] = addr->port[1];
649 nvlist_add_number_array(nvl, "port", ports, 2);
650 nvlist_add_number(nvl, "neg", addr->neg);
651 nvlist_add_number(nvl, "port_op", addr->port_op);
652
653 nvlist_add_nvlist(nvparent, name, nvl);
654 nvlist_destroy(nvl);
655 }
656
657 static void
pf_nvrule_addr_to_rule_addr(const nvlist_t * nvl,struct pf_rule_addr * addr)658 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr)
659 {
660 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr);
661
662 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL);
663 addr->neg = nvlist_get_number(nvl, "neg");
664 addr->port_op = nvlist_get_number(nvl, "port_op");
665 }
666
667 static void
pf_nvmape_to_mape(const nvlist_t * nvl,struct pf_mape_portset * mape)668 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape)
669 {
670 mape->offset = nvlist_get_number(nvl, "offset");
671 mape->psidlen = nvlist_get_number(nvl, "psidlen");
672 mape->psid = nvlist_get_number(nvl, "psid");
673 }
674
675 static void
pf_nvpool_to_pool(const nvlist_t * nvl,struct pfctl_pool * pool)676 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool)
677 {
678 size_t len;
679 const void *data;
680
681 data = nvlist_get_binary(nvl, "key", &len);
682 assert(len == sizeof(pool->key));
683 memcpy(&pool->key, data, len);
684
685 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter);
686
687 pool->tblidx = nvlist_get_number(nvl, "tblidx");
688 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL);
689 pool->opts = nvlist_get_number(nvl, "opts");
690
691 if (nvlist_exists_nvlist(nvl, "mape"))
692 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape);
693 }
694
695 static void
pf_nvrule_uid_to_rule_uid(const nvlist_t * nvl,struct pf_rule_uid * uid)696 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid)
697 {
698 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL);
699 uid->op = nvlist_get_number(nvl, "op");
700 }
701
702 static void
pf_nvdivert_to_divert(const nvlist_t * nvl,struct pfctl_rule * rule)703 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule)
704 {
705 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr);
706 rule->divert.port = nvlist_get_number(nvl, "port");
707 }
708
709 static void
pf_nvrule_to_rule(const nvlist_t * nvl,struct pfctl_rule * rule)710 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule)
711 {
712 const uint64_t *skip;
713 const char *const *labels;
714 size_t skipcount, labelcount;
715
716 rule->nr = nvlist_get_number(nvl, "nr");
717
718 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src);
719 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst);
720
721 skip = nvlist_get_number_array(nvl, "skip", &skipcount);
722 assert(skip);
723 assert(skipcount == PF_SKIP_COUNT);
724 for (int i = 0; i < PF_SKIP_COUNT; i++)
725 rule->skip[i].nr = skip[i];
726
727 labels = nvlist_get_string_array(nvl, "labels", &labelcount);
728 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
729 for (size_t i = 0; i < labelcount; i++)
730 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
731 rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
732 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
733 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
734 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE);
735 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
736 PF_TAG_NAME_SIZE);
737 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
738 PF_TAG_NAME_SIZE);
739
740 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"),
741 PF_TABLE_NAME_SIZE);
742
743 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rdr);
744
745 rule->evaluations = nvlist_get_number(nvl, "evaluations");
746 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL);
747 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL);
748
749 if (nvlist_exists_number(nvl, "timestamp")) {
750 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
751 }
752
753 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint");
754
755 rule->rtableid = nvlist_get_number(nvl, "rtableid");
756 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL);
757 rule->max_states = nvlist_get_number(nvl, "max_states");
758 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes");
759 rule->max_src_states = nvlist_get_number(nvl, "max_src_states");
760 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn");
761 rule->max_src_conn_rate.limit =
762 nvlist_get_number(nvl, "max_src_conn_rate.limit");
763 rule->max_src_conn_rate.seconds =
764 nvlist_get_number(nvl, "max_src_conn_rate.seconds");
765 rule->qid = nvlist_get_number(nvl, "qid");
766 rule->pqid = nvlist_get_number(nvl, "pqid");
767 rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
768 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe");
769 rule->free_flags = nvlist_get_number(nvl, "dnflags");
770 rule->prob = nvlist_get_number(nvl, "prob");
771 rule->cuid = nvlist_get_number(nvl, "cuid");
772 rule->cpid = nvlist_get_number(nvl, "cpid");
773
774 rule->return_icmp = nvlist_get_number(nvl, "return_icmp");
775 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6");
776 rule->max_mss = nvlist_get_number(nvl, "max_mss");
777 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags");
778
779 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid);
780 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"),
781 (struct pf_rule_uid *)&rule->gid);
782
783 rule->rule_flag = nvlist_get_number(nvl, "rule_flag");
784 rule->action = nvlist_get_number(nvl, "action");
785 rule->direction = nvlist_get_number(nvl, "direction");
786 rule->log = nvlist_get_number(nvl, "log");
787 rule->logif = nvlist_get_number(nvl, "logif");
788 rule->quick = nvlist_get_number(nvl, "quick");
789 rule->ifnot = nvlist_get_number(nvl, "ifnot");
790 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not");
791 rule->natpass = nvlist_get_number(nvl, "natpass");
792
793 rule->keep_state = nvlist_get_number(nvl, "keep_state");
794 rule->af = nvlist_get_number(nvl, "af");
795 rule->proto = nvlist_get_number(nvl, "proto");
796 rule->type = nvlist_get_number(nvl, "type");
797 rule->code = nvlist_get_number(nvl, "code");
798 rule->flags = nvlist_get_number(nvl, "flags");
799 rule->flagset = nvlist_get_number(nvl, "flagset");
800 rule->min_ttl = nvlist_get_number(nvl, "min_ttl");
801 rule->allow_opts = nvlist_get_number(nvl, "allow_opts");
802 rule->rt = nvlist_get_number(nvl, "rt");
803 rule->return_ttl = nvlist_get_number(nvl, "return_ttl");
804 rule->tos = nvlist_get_number(nvl, "tos");
805 rule->set_tos = nvlist_get_number(nvl, "set_tos");
806 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
807 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
808
809 rule->flush = nvlist_get_number(nvl, "flush");
810 rule->prio = nvlist_get_number(nvl, "prio");
811 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL);
812
813 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule);
814
815 rule->states_cur = nvlist_get_number(nvl, "states_cur");
816 rule->states_tot = nvlist_get_number(nvl, "states_tot");
817 rule->src_nodes = nvlist_get_number(nvl, "src_nodes");
818 }
819
820 static void
pfctl_nveth_addr_to_eth_addr(const nvlist_t * nvl,struct pfctl_eth_addr * addr)821 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr)
822 {
823 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 };
824 size_t len;
825 const void *data;
826
827 data = nvlist_get_binary(nvl, "addr", &len);
828 assert(len == sizeof(addr->addr));
829 memcpy(addr->addr, data, sizeof(addr->addr));
830
831 data = nvlist_get_binary(nvl, "mask", &len);
832 assert(len == sizeof(addr->mask));
833 memcpy(addr->mask, data, sizeof(addr->mask));
834
835 addr->neg = nvlist_get_bool(nvl, "neg");
836
837 /* To make checks for 'is this address set?' easier. */
838 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0;
839 }
840
841 static nvlist_t *
pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr * addr)842 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr)
843 {
844 nvlist_t *nvl;
845
846 nvl = nvlist_create(0);
847 if (nvl == NULL)
848 return (NULL);
849
850 nvlist_add_bool(nvl, "neg", addr->neg);
851 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN);
852 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN);
853
854 return (nvl);
855 }
856
857 static void
pfctl_nveth_rule_to_eth_rule(const nvlist_t * nvl,struct pfctl_eth_rule * rule)858 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule)
859 {
860 const char *const *labels;
861 size_t labelcount, i;
862
863 rule->nr = nvlist_get_number(nvl, "nr");
864 rule->quick = nvlist_get_bool(nvl, "quick");
865 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
866 rule->ifnot = nvlist_get_bool(nvl, "ifnot");
867 rule->direction = nvlist_get_number(nvl, "direction");
868 rule->proto = nvlist_get_number(nvl, "proto");
869 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
870 PF_TAG_NAME_SIZE);
871 rule->match_tag = nvlist_get_number(nvl, "match_tag");
872 rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not");
873
874 labels = nvlist_get_string_array(nvl, "labels", &labelcount);
875 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
876 for (i = 0; i < labelcount; i++)
877 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
878 rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
879
880 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"),
881 &rule->src);
882 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"),
883 &rule->dst);
884
885 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"),
886 &rule->ipsrc);
887 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"),
888 &rule->ipdst);
889
890 rule->evaluations = nvlist_get_number(nvl, "evaluations");
891 rule->packets[0] = nvlist_get_number(nvl, "packets-in");
892 rule->packets[1] = nvlist_get_number(nvl, "packets-out");
893 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in");
894 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out");
895
896 if (nvlist_exists_number(nvl, "timestamp")) {
897 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
898 }
899
900 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
901 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
902 PF_TAG_NAME_SIZE);
903
904 rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
905 rule->dnflags = nvlist_get_number(nvl, "dnflags");
906
907 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
908 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
909
910 strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"),
911 IFNAMSIZ);
912
913 rule->action = nvlist_get_number(nvl, "action");
914 }
915
916 int
pfctl_get_eth_rulesets_info(int dev,struct pfctl_eth_rulesets_info * ri,const char * path)917 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri,
918 const char *path)
919 {
920 nvlist_t *nvl;
921 int ret;
922
923 bzero(ri, sizeof(*ri));
924
925 nvl = nvlist_create(0);
926 nvlist_add_string(nvl, "path", path);
927
928 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0)
929 goto out;
930
931 ri->nr = nvlist_get_number(nvl, "nr");
932
933 out:
934 nvlist_destroy(nvl);
935 return (ret);
936 }
937
938 int
pfctl_get_eth_ruleset(int dev,const char * path,int nr,struct pfctl_eth_ruleset_info * ri)939 pfctl_get_eth_ruleset(int dev, const char *path, int nr,
940 struct pfctl_eth_ruleset_info *ri)
941 {
942 nvlist_t *nvl;
943 int ret;
944
945 bzero(ri, sizeof(*ri));
946
947 nvl = nvlist_create(0);
948 nvlist_add_string(nvl, "path", path);
949 nvlist_add_number(nvl, "nr", nr);
950
951 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0)
952 goto out;
953
954 ri->nr = nvlist_get_number(nvl, "nr");
955 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN);
956 strlcpy(ri->name, nvlist_get_string(nvl, "name"),
957 PF_ANCHOR_NAME_SIZE);
958
959 out:
960 nvlist_destroy(nvl);
961 return (ret);
962 }
963
964 int
pfctl_get_eth_rules_info(int dev,struct pfctl_eth_rules_info * rules,const char * path)965 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules,
966 const char *path)
967 {
968 nvlist_t *nvl;
969 int ret;
970
971 bzero(rules, sizeof(*rules));
972
973 nvl = nvlist_create(0);
974 nvlist_add_string(nvl, "anchor", path);
975
976 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0)
977 goto out;
978
979 rules->nr = nvlist_get_number(nvl, "nr");
980 rules->ticket = nvlist_get_number(nvl, "ticket");
981
982 out:
983 nvlist_destroy(nvl);
984 return (ret);
985 }
986
987 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)988 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket,
989 const char *path, struct pfctl_eth_rule *rule, bool clear,
990 char *anchor_call)
991 {
992 nvlist_t *nvl;
993 int ret;
994
995 nvl = nvlist_create(0);
996
997 nvlist_add_string(nvl, "anchor", path);
998 nvlist_add_number(nvl, "ticket", ticket);
999 nvlist_add_number(nvl, "nr", nr);
1000 nvlist_add_bool(nvl, "clear", clear);
1001
1002 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0)
1003 goto out;
1004
1005 pfctl_nveth_rule_to_eth_rule(nvl, rule);
1006
1007 if (anchor_call)
1008 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1009 MAXPATHLEN);
1010
1011 out:
1012 nvlist_destroy(nvl);
1013 return (ret);
1014 }
1015
1016 int
pfctl_add_eth_rule(int dev,const struct pfctl_eth_rule * r,const char * anchor,const char * anchor_call,uint32_t ticket)1017 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor,
1018 const char *anchor_call, uint32_t ticket)
1019 {
1020 struct pfioc_nv nv;
1021 nvlist_t *nvl, *addr;
1022 void *packed;
1023 int error = 0;
1024 size_t labelcount, size;
1025
1026 nvl = nvlist_create(0);
1027
1028 nvlist_add_number(nvl, "ticket", ticket);
1029 nvlist_add_string(nvl, "anchor", anchor);
1030 nvlist_add_string(nvl, "anchor_call", anchor_call);
1031
1032 nvlist_add_number(nvl, "nr", r->nr);
1033 nvlist_add_bool(nvl, "quick", r->quick);
1034 nvlist_add_string(nvl, "ifname", r->ifname);
1035 nvlist_add_bool(nvl, "ifnot", r->ifnot);
1036 nvlist_add_number(nvl, "direction", r->direction);
1037 nvlist_add_number(nvl, "proto", r->proto);
1038 nvlist_add_string(nvl, "match_tagname", r->match_tagname);
1039 nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not);
1040
1041 addr = pfctl_eth_addr_to_nveth_addr(&r->src);
1042 if (addr == NULL) {
1043 nvlist_destroy(nvl);
1044 return (ENOMEM);
1045 }
1046 nvlist_add_nvlist(nvl, "src", addr);
1047 nvlist_destroy(addr);
1048
1049 addr = pfctl_eth_addr_to_nveth_addr(&r->dst);
1050 if (addr == NULL) {
1051 nvlist_destroy(nvl);
1052 return (ENOMEM);
1053 }
1054 nvlist_add_nvlist(nvl, "dst", addr);
1055 nvlist_destroy(addr);
1056
1057 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc);
1058 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst);
1059
1060 labelcount = 0;
1061 while (labelcount < PF_RULE_MAX_LABEL_COUNT &&
1062 r->label[labelcount][0] != 0) {
1063 nvlist_append_string_array(nvl, "labels",
1064 r->label[labelcount]);
1065 labelcount++;
1066 }
1067 nvlist_add_number(nvl, "ridentifier", r->ridentifier);
1068
1069 nvlist_add_string(nvl, "qname", r->qname);
1070 nvlist_add_string(nvl, "tagname", r->tagname);
1071 nvlist_add_number(nvl, "dnpipe", r->dnpipe);
1072 nvlist_add_number(nvl, "dnflags", r->dnflags);
1073
1074 nvlist_add_string(nvl, "bridge_to", r->bridge_to);
1075
1076 nvlist_add_number(nvl, "action", r->action);
1077
1078 packed = nvlist_pack(nvl, &size);
1079 if (packed == NULL) {
1080 nvlist_destroy(nvl);
1081 return (ENOMEM);
1082 }
1083
1084 nv.len = size;
1085 nv.size = size;
1086 nv.data = packed;
1087
1088 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0)
1089 error = errno;
1090
1091 free(packed);
1092 nvlist_destroy(nvl);
1093
1094 return (error);
1095 }
1096
1097 static void
snl_add_msg_attr_addr_wrap(struct snl_writer * nw,uint32_t type,const struct pf_addr_wrap * addr)1098 snl_add_msg_attr_addr_wrap(struct snl_writer *nw, uint32_t type, const struct pf_addr_wrap *addr)
1099 {
1100 int off;
1101
1102 off = snl_add_msg_attr_nested(nw, type);
1103
1104 snl_add_msg_attr_ip6(nw, PF_AT_ADDR, &addr->v.a.addr.v6);
1105 snl_add_msg_attr_ip6(nw, PF_AT_MASK, &addr->v.a.mask.v6);
1106
1107 if (addr->type == PF_ADDR_DYNIFTL)
1108 snl_add_msg_attr_string(nw, PF_AT_IFNAME, addr->v.ifname);
1109 if (addr->type == PF_ADDR_TABLE)
1110 snl_add_msg_attr_string(nw, PF_AT_TABLENAME, addr->v.tblname);
1111 snl_add_msg_attr_u8(nw, PF_AT_TYPE, addr->type);
1112 snl_add_msg_attr_u8(nw, PF_AT_IFLAGS, addr->iflags);
1113
1114 snl_end_attr_nested(nw, off);
1115 }
1116
1117 static void
snl_add_msg_attr_pool_addr(struct snl_writer * nw,uint32_t type,const struct pf_pooladdr * pa)1118 snl_add_msg_attr_pool_addr(struct snl_writer *nw, uint32_t type, const struct pf_pooladdr *pa)
1119 {
1120 int off;
1121
1122 off = snl_add_msg_attr_nested(nw, type);
1123
1124 snl_add_msg_attr_string(nw, PF_PA_IFNAME, pa->ifname);
1125 snl_add_msg_attr_addr_wrap(nw, PF_PA_ADDR, &pa->addr);
1126
1127 snl_end_attr_nested(nw, off);
1128 }
1129
1130 static void
snl_add_msg_attr_rule_addr(struct snl_writer * nw,uint32_t type,const struct pf_rule_addr * addr)1131 snl_add_msg_attr_rule_addr(struct snl_writer *nw, uint32_t type, const struct pf_rule_addr *addr)
1132 {
1133 int off;
1134
1135 off = snl_add_msg_attr_nested(nw, type);
1136
1137 snl_add_msg_attr_addr_wrap(nw, PF_RAT_ADDR, &addr->addr);
1138 snl_add_msg_attr_u16(nw, PF_RAT_SRC_PORT, addr->port[0]);
1139 snl_add_msg_attr_u16(nw, PF_RAT_DST_PORT, addr->port[1]);
1140 snl_add_msg_attr_u8(nw, PF_RAT_NEG, addr->neg);
1141 snl_add_msg_attr_u8(nw, PF_RAT_OP, addr->port_op);
1142
1143 snl_end_attr_nested(nw, off);
1144 }
1145
1146 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])1147 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])
1148 {
1149 int off, i = 0;
1150
1151 off = snl_add_msg_attr_nested(nw, type);
1152
1153 while (i < PF_RULE_MAX_LABEL_COUNT &&
1154 labels[i][0] != 0) {
1155 snl_add_msg_attr_string(nw, PF_LT_LABEL, labels[i]);
1156 i++;
1157 }
1158
1159 snl_end_attr_nested(nw, off);
1160 }
1161
1162 static void
snl_add_msg_attr_mape(struct snl_writer * nw,uint32_t type,const struct pf_mape_portset * me)1163 snl_add_msg_attr_mape(struct snl_writer *nw, uint32_t type, const struct pf_mape_portset *me)
1164 {
1165 int off;
1166
1167 off = snl_add_msg_attr_nested(nw, type);
1168
1169 snl_add_msg_attr_u8(nw, PF_MET_OFFSET, me->offset);
1170 snl_add_msg_attr_u8(nw, PF_MET_PSID_LEN, me->psidlen);
1171 snl_add_msg_attr_u16(nw, PF_MET_PSID, me->psid);
1172
1173 snl_end_attr_nested(nw, off);
1174 }
1175
1176 static void
snl_add_msg_attr_rpool(struct snl_writer * nw,uint32_t type,const struct pfctl_pool * pool)1177 snl_add_msg_attr_rpool(struct snl_writer *nw, uint32_t type, const struct pfctl_pool *pool)
1178 {
1179 int off;
1180
1181 off = snl_add_msg_attr_nested(nw, type);
1182
1183 snl_add_msg_attr(nw, PF_PT_KEY, sizeof(pool->key), &pool->key);
1184 snl_add_msg_attr_ip6(nw, PF_PT_COUNTER, &pool->counter.v6);
1185 snl_add_msg_attr_u32(nw, PF_PT_TBLIDX, pool->tblidx);
1186 snl_add_msg_attr_u16(nw, PF_PT_PROXY_SRC_PORT, pool->proxy_port[0]);
1187 snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]);
1188 snl_add_msg_attr_u8(nw, PF_PT_OPTS, pool->opts);
1189 snl_add_msg_attr_mape(nw, PF_PT_MAPE, &pool->mape);
1190
1191 snl_end_attr_nested(nw, off);
1192 }
1193
1194 static void
snl_add_msg_attr_timeouts(struct snl_writer * nw,uint32_t type,const uint32_t * timeouts)1195 snl_add_msg_attr_timeouts(struct snl_writer *nw, uint32_t type, const uint32_t *timeouts)
1196 {
1197 int off;
1198
1199 off = snl_add_msg_attr_nested(nw, type);
1200
1201 for (int i = 0; i < PFTM_MAX; i++)
1202 snl_add_msg_attr_u32(nw, PF_TT_TIMEOUT, timeouts[i]);
1203
1204 snl_end_attr_nested(nw, off);
1205 }
1206
1207 static void
snl_add_msg_attr_uid(struct snl_writer * nw,uint32_t type,const struct pf_rule_uid * uid)1208 snl_add_msg_attr_uid(struct snl_writer *nw, uint32_t type, const struct pf_rule_uid *uid)
1209 {
1210 int off;
1211
1212 off = snl_add_msg_attr_nested(nw, type);
1213
1214 snl_add_msg_attr_u32(nw, PF_RUT_UID_LOW, uid->uid[0]);
1215 snl_add_msg_attr_u32(nw, PF_RUT_UID_HIGH, uid->uid[1]);
1216 snl_add_msg_attr_u8(nw, PF_RUT_OP, uid->op);
1217
1218 snl_end_attr_nested(nw, off);
1219 }
1220
1221 static void
snl_add_msg_attr_threshold(struct snl_writer * nw,uint32_t type,const struct pfctl_threshold * th)1222 snl_add_msg_attr_threshold(struct snl_writer *nw, uint32_t type, const struct pfctl_threshold *th)
1223 {
1224 int off;
1225
1226 off = snl_add_msg_attr_nested(nw, type);
1227
1228 snl_add_msg_attr_u32(nw, PF_TH_LIMIT, th->limit);
1229 snl_add_msg_attr_u32(nw, PF_TH_SECONDS, th->seconds);
1230
1231 snl_end_attr_nested(nw, off);
1232 }
1233
1234 static void
snl_add_msg_attr_pf_rule(struct snl_writer * nw,uint32_t type,const struct pfctl_rule * r)1235 snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r)
1236 {
1237 int off;
1238
1239 off = snl_add_msg_attr_nested(nw, type);
1240
1241 snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src);
1242 snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst);
1243 snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label);
1244 snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier);
1245 snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname);
1246 snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname);
1247 snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname);
1248 snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname);
1249 snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname);
1250 snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname);
1251 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RDR, &r->rdr);
1252 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_NAT, &r->nat);
1253 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RT, &r->route);
1254 snl_add_msg_attr_threshold(nw, PF_RT_PKTRATE, &r->pktrate);
1255 snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint);
1256 snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid);
1257 snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout);
1258 snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states);
1259 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes);
1260 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states);
1261 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN, r->max_src_conn);
1262 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit);
1263 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds);
1264 snl_add_msg_attr_u16(nw, PF_RT_MAX_PKT_SIZE, r->max_pkt_size);
1265
1266 snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe);
1267 snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe);
1268 snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags);
1269
1270 snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr);
1271 snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob);
1272 snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid);
1273 snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid);
1274
1275 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp);
1276 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6);
1277 snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss);
1278 snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags);
1279
1280 snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid);
1281 snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid);
1282 snl_add_msg_attr_string(nw, PF_RT_RCV_IFNAME, r->rcv_ifname);
1283 snl_add_msg_attr_bool(nw, PF_RT_RCV_IFNOT, r->rcvifnot);
1284
1285 snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag);
1286 snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action);
1287 snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction);
1288 snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log);
1289 snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif);
1290 snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick);
1291 snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot);
1292 snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not);
1293 snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass);
1294 snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state);
1295 snl_add_msg_attr_u8(nw, PF_RT_AF, r->af);
1296 snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto);
1297 snl_add_msg_attr_u16(nw, PF_RT_TYPE_2, r->type);
1298 snl_add_msg_attr_u16(nw, PF_RT_CODE_2, r->code);
1299 snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags);
1300 snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset);
1301 snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl);
1302 snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts);
1303 snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt);
1304 snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl);
1305 snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos);
1306 snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos);
1307
1308 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative);
1309 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard);
1310 snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush);
1311 snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio);
1312 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]);
1313 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]);
1314 snl_add_msg_attr_u8(nw, PF_RT_NAF, r->naf);
1315
1316 snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6);
1317 snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port);
1318
1319 snl_add_msg_attr_u8(nw, PF_RT_STATE_LIMIT, r->statelim.id);
1320 snl_add_msg_attr_u32(nw, PF_RT_STATE_LIMIT_ACTION, r->statelim.limiter_action);
1321 snl_add_msg_attr_u8(nw, PF_RT_SOURCE_LIMIT, r->sourcelim.id);
1322 snl_add_msg_attr_u32(nw, PF_RT_SOURCE_LIMIT_ACTION, r->sourcelim.limiter_action);
1323
1324 snl_end_attr_nested(nw, off);
1325 }
1326
1327 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)1328 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor,
1329 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket)
1330 {
1331 struct pfctl_handle *h;
1332 int ret;
1333
1334 h = pfctl_open(PF_DEVICE);
1335 if (h == NULL)
1336 return (ENODEV);
1337
1338 ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket);
1339
1340 pfctl_close(h);
1341
1342 return (ret);
1343 }
1344
1345 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)1346 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r,
1347 const char *anchor, const char *anchor_call, uint32_t ticket,
1348 uint32_t pool_ticket)
1349 {
1350 struct snl_writer nw;
1351 struct snl_errmsg_data e = {};
1352 struct nlmsghdr *hdr;
1353 uint32_t seq_id;
1354 int family_id;
1355
1356 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1357 if (family_id == 0)
1358 return (ENOTSUP);
1359
1360 snl_init_writer(&h->ss, &nw);
1361 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE);
1362 hdr->nlmsg_flags |= NLM_F_DUMP;
1363 snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket);
1364 snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket);
1365 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor);
1366 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call);
1367
1368 snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r);
1369
1370 if ((hdr = snl_finalize_msg(&nw)) == NULL)
1371 return (ENXIO);
1372
1373 seq_id = hdr->nlmsg_seq;
1374
1375 if (! snl_send_message(&h->ss, hdr))
1376 return (ENXIO);
1377
1378 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1379 }
1380
1381 return (e.error);
1382 }
1383
1384 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1385 #define _OUT(_field) offsetof(struct pfctl_rules_info, _field)
1386 static struct snl_attr_parser ap_getrules[] = {
1387 { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
1388 { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
1389 };
1390 #undef _IN
1391 #undef _OUT
1392 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, snl_f_p_empty, ap_getrules);
1393
1394 int
pfctl_get_rules_info_h(struct pfctl_handle * h,struct pfctl_rules_info * rules,uint32_t ruleset,const char * path)1395 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset,
1396 const char *path)
1397 {
1398 struct snl_errmsg_data e = {};
1399 struct nlmsghdr *hdr;
1400 struct snl_writer nw;
1401 uint32_t seq_id;
1402 int family_id;
1403
1404 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1405 if (family_id == 0)
1406 return (ENOTSUP);
1407
1408 snl_init_writer(&h->ss, &nw);
1409 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES);
1410 hdr->nlmsg_flags |= NLM_F_DUMP;
1411
1412 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path);
1413 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1414
1415 hdr = snl_finalize_msg(&nw);
1416 if (hdr == NULL)
1417 return (ENOMEM);
1418
1419 seq_id = hdr->nlmsg_seq;
1420 if (! snl_send_message(&h->ss, hdr))
1421 return (ENXIO);
1422
1423 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1424 if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules))
1425 continue;
1426 }
1427
1428 return (e.error);
1429 }
1430
1431 int
pfctl_get_rules_info(int dev __unused,struct pfctl_rules_info * rules,uint32_t ruleset,const char * path)1432 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset,
1433 const char *path)
1434 {
1435 struct pfctl_handle *h;
1436 int error;
1437
1438 h = pfctl_open(PF_DEVICE);
1439 if (h == NULL)
1440 return (ENOTSUP);
1441 error = pfctl_get_rules_info_h(h, rules, ruleset, path);
1442 pfctl_close(h);
1443
1444 return (error);
1445 }
1446
1447 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)1448 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor,
1449 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1450 {
1451 return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule,
1452 anchor_call, false));
1453 }
1454
1455 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)1456 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor,
1457 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1458 {
1459 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule,
1460 anchor_call, false));
1461 }
1462
1463 #define _OUT(_field) offsetof(struct pf_addr_wrap, _field)
1464 static const struct snl_attr_parser ap_addr_wrap[] = {
1465 { .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr },
1466 { .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr },
1467 { .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string },
1468 { .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1469 { .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 },
1470 { .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 },
1471 { .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 },
1472 { .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 },
1473 };
1474 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap);
1475 #undef _OUT
1476
1477 #define _OUT(_field) offsetof(struct pf_rule_addr, _field)
1478 static struct snl_attr_parser ap_rule_addr[] = {
1479 { .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
1480 { .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1481 { .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1482 { .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 },
1483 { .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 },
1484 };
1485 #undef _OUT
1486 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr);
1487
1488 struct snl_parsed_labels
1489 {
1490 char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
1491 uint32_t i;
1492 };
1493
1494 static bool
snl_attr_get_pf_rule_labels(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1495 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1496 const void *arg __unused, void *target)
1497 {
1498 struct snl_parsed_labels *l = (struct snl_parsed_labels *)target;
1499 bool ret;
1500
1501 if (l->i >= PF_RULE_MAX_LABEL_COUNT)
1502 return (false);
1503
1504 ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE,
1505 l->labels[l->i]);
1506 if (ret)
1507 l->i++;
1508
1509 return (ret);
1510 }
1511
1512 #define _OUT(_field) offsetof(struct nl_parsed_labels, _field)
1513 static const struct snl_attr_parser ap_labels[] = {
1514 { .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels },
1515 };
1516 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels);
1517 #undef _OUT
1518
1519 static bool
snl_attr_get_nested_pf_rule_labels(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1520 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1521 const void *arg __unused, void *target)
1522 {
1523 struct snl_parsed_labels parsed_labels = { };
1524 bool error;
1525
1526 /* Assumes target points to the beginning of the structure */
1527 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels);
1528 if (! error)
1529 return (error);
1530
1531 memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels));
1532
1533 return (true);
1534 }
1535
1536 #define _OUT(_field) offsetof(struct pf_mape_portset, _field)
1537 static const struct snl_attr_parser ap_mape_portset[] = {
1538 { .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 },
1539 { .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 },
1540 {. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 },
1541 };
1542 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset);
1543 #undef _OUT
1544
1545 #define _OUT(_field) offsetof(struct pfctl_pool, _field)
1546 static const struct snl_attr_parser ap_pool[] = {
1547 { .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes },
1548 { .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr },
1549 { .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 },
1550 { .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 },
1551 { .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 },
1552 { .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 },
1553 { .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested },
1554 };
1555 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool);
1556 #undef _OUT
1557
1558 struct nl_parsed_timeouts
1559 {
1560 uint32_t timeouts[PFTM_MAX];
1561 uint32_t i;
1562 };
1563
1564 static bool
snl_attr_get_pf_timeout(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1565 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla,
1566 const void *arg __unused, void *target)
1567 {
1568 struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target;
1569 bool ret;
1570
1571 if (t->i >= PFTM_MAX)
1572 return (false);
1573
1574 ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]);
1575 if (ret)
1576 t->i++;
1577
1578 return (ret);
1579 }
1580
1581 #define _OUT(_field) offsetof(struct nl_parsed_timeout, _field)
1582 static const struct snl_attr_parser ap_timeouts[] = {
1583 { .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout },
1584 };
1585 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts);
1586 #undef _OUT
1587
1588 static bool
snl_attr_get_nested_timeouts(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1589 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla,
1590 const void *arg __unused, void *target)
1591 {
1592 struct nl_parsed_timeouts parsed_timeouts = { };
1593 bool error;
1594
1595 /* Assumes target points to the beginning of the structure */
1596 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts);
1597 if (! error)
1598 return (error);
1599
1600 memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts));
1601
1602 return (true);
1603 }
1604
1605 #define _OUT(_field) offsetof(struct pf_rule_uid, _field)
1606 static const struct snl_attr_parser ap_rule_uid[] = {
1607 { .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 },
1608 { .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 },
1609 { .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 },
1610 };
1611 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid);
1612 #undef _OUT
1613
1614 #define _OUT(_field) offsetof(struct pfctl_threshold, _field)
1615 static const struct snl_attr_parser ap_pfctl_threshold[] = {
1616 { .type = PF_TH_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
1617 { .type = PF_TH_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
1618 { .type = PF_TH_COUNT, .off = _OUT(count), .cb = snl_attr_get_uint32 },
1619 };
1620 SNL_DECLARE_ATTR_PARSER(pfctl_threshold_parser, ap_pfctl_threshold);
1621 #undef _OUT
1622
1623 struct pfctl_nl_get_rule {
1624 struct pfctl_rule r;
1625 char anchor_call[MAXPATHLEN];
1626 };
1627 #define _OUT(_field) offsetof(struct pfctl_nl_get_rule, _field)
1628 static struct snl_attr_parser ap_getrule[] = {
1629 { .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1630 { .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1631 { .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 },
1632 { .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels },
1633 { .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string },
1634 { .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1635 { .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1636 { .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1637 { .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1638 { .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1639 { .type = PF_RT_RPOOL_RDR, .off = _OUT(r.rdr), .arg = &pool_parser, .cb = snl_attr_get_nested },
1640 { .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 },
1641 { .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 },
1642 { .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts },
1643 { .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 },
1644 { .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 },
1645 { .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 },
1646 { .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 },
1647 { .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 },
1648 { .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 },
1649 { .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 },
1650 { .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 },
1651 { .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 },
1652 { .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 },
1653 { .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 },
1654 {. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 },
1655 { .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 },
1656 { .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 },
1657 { .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 },
1658 { .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 },
1659 { .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1660 { .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1661 { .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 },
1662 { .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 },
1663 { .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 },
1664 { .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 },
1665 { .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 },
1666 { .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 },
1667 { .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 },
1668 { .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 },
1669 { .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 },
1670 { .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 },
1671 { .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 },
1672 { .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 },
1673 { .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 },
1674 { .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 },
1675 { .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 },
1676 { .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 },
1677 { .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 },
1678 { .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 },
1679 { .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 },
1680 { .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 },
1681 { .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 },
1682 { .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 },
1683 { .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 },
1684 { .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 },
1685 { .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 },
1686 { .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 },
1687 { .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 },
1688 { .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 },
1689 { .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr },
1690 { .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 },
1691 { .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 },
1692 { .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 },
1693 { .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 },
1694 { .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 },
1695 { .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 },
1696 { .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 },
1697 { .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 },
1698 { .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 },
1699 { .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 },
1700 { .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string },
1701 { .type = PF_RT_RCV_IFNAME, .off = _OUT(r.rcv_ifname), .arg = (void*)IFNAMSIZ, .cb = snl_attr_copy_string },
1702 { .type = PF_RT_MAX_SRC_CONN, .off = _OUT(r.max_src_conn), .cb = snl_attr_get_uint32 },
1703 { .type = PF_RT_RPOOL_NAT, .off = _OUT(r.nat), .arg = &pool_parser, .cb = snl_attr_get_nested },
1704 { .type = PF_RT_NAF, .off = _OUT(r.naf), .cb = snl_attr_get_uint8 },
1705 { .type = PF_RT_RPOOL_RT, .off = _OUT(r.route), .arg = &pool_parser, .cb = snl_attr_get_nested },
1706 { .type = PF_RT_RCV_IFNOT, .off = _OUT(r.rcvifnot),.cb = snl_attr_get_bool },
1707 { .type = PF_RT_SRC_NODES_LIMIT, .off = _OUT(r.src_nodes_type[PF_SN_LIMIT]), .cb = snl_attr_get_uint64 },
1708 { .type = PF_RT_SRC_NODES_NAT, .off = _OUT(r.src_nodes_type[PF_SN_NAT]), .cb = snl_attr_get_uint64 },
1709 { .type = PF_RT_SRC_NODES_ROUTE, .off = _OUT(r.src_nodes_type[PF_SN_ROUTE]), .cb = snl_attr_get_uint64 },
1710 { .type = PF_RT_PKTRATE, .off = _OUT(r.pktrate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested },
1711 { .type = PF_RT_MAX_PKT_SIZE, .off =_OUT(r.max_pkt_size), .cb = snl_attr_get_uint16 },
1712 { .type = PF_RT_TYPE_2, .off = _OUT(r.type), .cb = snl_attr_get_uint16 },
1713 { .type = PF_RT_CODE_2, .off = _OUT(r.code), .cb = snl_attr_get_uint16 },
1714 { .type = PF_RT_EXPTIME, .off = _OUT(r.exptime), .cb = snl_attr_get_time_t },
1715 { .type = PF_RT_STATE_LIMIT, .off = _OUT(r.statelim.id), .cb = snl_attr_get_uint8 },
1716 { .type = PF_RT_SOURCE_LIMIT, .off = _OUT(r.sourcelim.id), .cb = snl_attr_get_uint8 },
1717 { .type = PF_RT_STATE_LIMIT_ACTION, .off = _OUT(r.statelim.limiter_action), .cb = snl_attr_get_uint32 },
1718 { .type = PF_RT_SOURCE_LIMIT_ACTION, .off = _OUT(r.sourcelim.limiter_action), .cb = snl_attr_get_uint32 },
1719 };
1720 #undef _OUT
1721 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, snl_f_p_empty, ap_getrule);
1722
1723 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)1724 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket,
1725 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1726 char *anchor_call, bool clear)
1727 {
1728 struct pfctl_nl_get_rule attrs = {};
1729 struct snl_errmsg_data e = {};
1730 struct nlmsghdr *hdr;
1731 struct snl_writer nw;
1732 uint32_t seq_id;
1733 int family_id;
1734
1735 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1736 if (family_id == 0)
1737 return (ENOTSUP);
1738
1739 snl_init_writer(&h->ss, &nw);
1740 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE);
1741 hdr->nlmsg_flags |= NLM_F_DUMP;
1742
1743 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor);
1744 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1745 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr);
1746 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket);
1747 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear);
1748
1749 hdr = snl_finalize_msg(&nw);
1750 if (hdr == NULL)
1751 return (ENOMEM);
1752
1753 seq_id = hdr->nlmsg_seq;
1754 if (! snl_send_message(&h->ss, hdr))
1755 return (ENXIO);
1756
1757 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1758 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs))
1759 continue;
1760 }
1761
1762 memcpy(rule, &attrs.r, sizeof(attrs.r));
1763 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN);
1764
1765 return (e.error);
1766 }
1767
1768 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)1769 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket,
1770 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1771 char *anchor_call, bool clear)
1772 {
1773 nvlist_t *nvl;
1774 int ret;
1775
1776 nvl = nvlist_create(0);
1777 if (nvl == 0)
1778 return (ENOMEM);
1779
1780 nvlist_add_number(nvl, "nr", nr);
1781 nvlist_add_number(nvl, "ticket", ticket);
1782 nvlist_add_string(nvl, "anchor", anchor);
1783 nvlist_add_number(nvl, "ruleset", ruleset);
1784
1785 if (clear)
1786 nvlist_add_bool(nvl, "clear_counter", true);
1787
1788 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0)
1789 goto out;
1790
1791 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule);
1792
1793 if (anchor_call)
1794 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1795 MAXPATHLEN);
1796
1797 out:
1798 nvlist_destroy(nvl);
1799 return (ret);
1800 }
1801
1802 int
pfctl_set_keepcounters(int dev,bool keep)1803 pfctl_set_keepcounters(int dev, bool keep)
1804 {
1805 struct pfioc_nv nv;
1806 nvlist_t *nvl;
1807 int ret;
1808
1809 nvl = nvlist_create(0);
1810
1811 nvlist_add_bool(nvl, "keep_counters", keep);
1812
1813 nv.data = nvlist_pack(nvl, &nv.len);
1814 nv.size = nv.len;
1815
1816 nvlist_destroy(nvl);
1817
1818 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv);
1819
1820 free(nv.data);
1821 return (ret);
1822 }
1823
1824 struct pfctl_creator {
1825 uint32_t id;
1826 };
1827 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1828 #define _OUT(_field) offsetof(struct pfctl_creator, _field)
1829 static struct snl_attr_parser ap_creators[] = {
1830 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
1831 };
1832 #undef _IN
1833 #undef _OUT
1834 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, snl_f_p_empty, ap_creators);
1835
1836 static int
pfctl_get_creators_nl(struct snl_state * ss,uint32_t * creators,size_t * len)1837 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len)
1838 {
1839
1840 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1841 size_t i = 0;
1842
1843 struct nlmsghdr *hdr;
1844 struct snl_writer nw;
1845
1846 if (family_id == 0)
1847 return (ENOTSUP);
1848
1849 snl_init_writer(ss, &nw);
1850 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS);
1851 hdr->nlmsg_flags |= NLM_F_DUMP;
1852 hdr = snl_finalize_msg(&nw);
1853 if (hdr == NULL)
1854 return (ENOMEM);
1855 uint32_t seq_id = hdr->nlmsg_seq;
1856
1857 snl_send_message(ss, hdr);
1858
1859 struct snl_errmsg_data e = {};
1860 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1861 struct pfctl_creator c;
1862 bzero(&c, sizeof(c));
1863
1864 if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c))
1865 continue;
1866
1867 creators[i] = c.id;
1868 i++;
1869 if (i > *len)
1870 return (E2BIG);
1871 }
1872
1873 *len = i;
1874
1875 return (0);
1876 }
1877
1878 int
pfctl_get_creatorids(struct pfctl_handle * h,uint32_t * creators,size_t * len)1879 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len)
1880 {
1881 int error;
1882
1883 error = pfctl_get_creators_nl(&h->ss, creators, len);
1884
1885 return (error);
1886 }
1887
1888 static inline bool
snl_attr_get_pfaddr(struct snl_state * ss __unused,struct nlattr * nla,const void * arg __unused,void * target)1889 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla,
1890 const void *arg __unused, void *target)
1891 {
1892 memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla));
1893 return (true);
1894 }
1895
1896 static inline bool
snl_attr_store_ifname(struct snl_state * ss __unused,struct nlattr * nla,const void * arg __unused,void * target)1897 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla,
1898 const void *arg __unused, void *target)
1899 {
1900 size_t maxlen = NLA_DATA_LEN(nla);
1901
1902 if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) {
1903 strlcpy(target, (char *)NLA_DATA(nla), maxlen);
1904 return (true);
1905 }
1906 return (false);
1907 }
1908
1909 #define _OUT(_field) offsetof(struct pfctl_state_peer, _field)
1910 static const struct snl_attr_parser nla_p_speer[] = {
1911 { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 },
1912 { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 },
1913 { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 },
1914 { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 },
1915 { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 },
1916 };
1917 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer);
1918 #undef _OUT
1919
1920 #define _OUT(_field) offsetof(struct pfctl_state_key, _field)
1921 static const struct snl_attr_parser nla_p_skey[] = {
1922 { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr },
1923 { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr },
1924 { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1925 { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1926 { .type = PF_STK_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
1927 { .type = PF_STK_PROTO, .off = _OUT(proto), .cb = snl_attr_get_uint16 },
1928 };
1929 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey);
1930 #undef _OUT
1931
1932 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1933 #define _OUT(_field) offsetof(struct pfctl_state, _field)
1934 static struct snl_attr_parser ap_state[] = {
1935 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 },
1936 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 },
1937 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname },
1938 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname },
1939 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1940 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1941 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested },
1942 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested },
1943 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr },
1944 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
1945 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 },
1946 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 },
1947 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 },
1948 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 },
1949 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
1950 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
1951 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
1952 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
1953 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 },
1954 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 },
1955 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 },
1956 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 },
1957 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 },
1958 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 },
1959 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 },
1960 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 },
1961 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 },
1962 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 },
1963 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname },
1964 { .type = PF_ST_SRC_NODE_FLAGS, .off = _OUT(src_node_flags), .cb = snl_attr_get_uint8 },
1965 { .type = PF_ST_RT_AF, .off = _OUT(rt_af), .cb = snl_attr_get_uint8 },
1966 };
1967 #undef _IN
1968 #undef _OUT
1969 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, snl_f_p_empty, ap_state);
1970
1971 int
pfctl_get_states_h(struct pfctl_handle * h,struct pfctl_state_filter * filter,pfctl_get_state_fn f,void * arg)1972 pfctl_get_states_h(struct pfctl_handle *h, struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
1973 {
1974 int family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1975 int ret;
1976
1977 struct nlmsghdr *hdr;
1978 struct snl_writer nw;
1979
1980 if (family_id == 0)
1981 return (ENOTSUP);
1982
1983 snl_init_writer(&h->ss, &nw);
1984 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES);
1985 hdr->nlmsg_flags |= NLM_F_DUMP;
1986 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname);
1987 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto);
1988 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af);
1989 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6);
1990 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6);
1991
1992 hdr = snl_finalize_msg(&nw);
1993 if (hdr == NULL)
1994 return (ENOMEM);
1995
1996 uint32_t seq_id = hdr->nlmsg_seq;
1997
1998 snl_send_message(&h->ss, hdr);
1999
2000 struct snl_errmsg_data e = {};
2001 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2002 struct pfctl_state s;
2003 bzero(&s, sizeof(s));
2004 if (!snl_parse_nlmsg(&h->ss, hdr, &state_parser, &s))
2005 continue;
2006
2007 ret = f(&s, arg);
2008 if (ret != 0)
2009 return (ret);
2010 }
2011
2012 return (0);
2013 }
2014
2015 int
pfctl_get_states_iter(pfctl_get_state_fn f,void * arg)2016 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg)
2017 {
2018 struct pfctl_state_filter filter = {};
2019 return (pfctl_get_filtered_states_iter(&filter, f, arg));
2020 }
2021
2022 int
pfctl_get_filtered_states_iter(struct pfctl_state_filter * filter,pfctl_get_state_fn f,void * arg)2023 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
2024 {
2025 struct pfctl_handle h = {};
2026 int error;
2027
2028 snl_init(&h.ss, NETLINK_GENERIC);
2029 error = pfctl_get_states_h(&h, filter, f, arg);
2030 snl_free(&h.ss);
2031
2032 return (error);
2033 }
2034
2035 static int
pfctl_append_states(struct pfctl_state * s,void * arg)2036 pfctl_append_states(struct pfctl_state *s, void *arg)
2037 {
2038 struct pfctl_state *new;
2039 struct pfctl_states *states = (struct pfctl_states *)arg;
2040
2041 new = malloc(sizeof(*s));
2042 if (new == NULL)
2043 return (ENOMEM);
2044
2045 memcpy(new, s, sizeof(*s));
2046
2047 TAILQ_INSERT_TAIL(&states->states, new, entry);
2048
2049 return (0);
2050 }
2051
2052 int
pfctl_get_states(int dev __unused,struct pfctl_states * states)2053 pfctl_get_states(int dev __unused, struct pfctl_states *states)
2054 {
2055 int ret;
2056
2057 bzero(states, sizeof(*states));
2058 TAILQ_INIT(&states->states);
2059
2060 ret = pfctl_get_states_iter(pfctl_append_states, states);
2061 if (ret != 0) {
2062 pfctl_free_states(states);
2063 return (ret);
2064 }
2065
2066 return (0);
2067 }
2068
2069 void
pfctl_free_states(struct pfctl_states * states)2070 pfctl_free_states(struct pfctl_states *states)
2071 {
2072 struct pfctl_state *s, *tmp;
2073
2074 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) {
2075 free(s);
2076 }
2077
2078 bzero(states, sizeof(*states));
2079 }
2080
2081 struct pfctl_nl_clear_states {
2082 uint32_t killed;
2083 };
2084 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field)
2085 static struct snl_attr_parser ap_clear_states[] = {
2086 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 },
2087 };
2088 #undef _OUT
2089 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, snl_f_p_empty, ap_clear_states);
2090
2091 static int
_pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed,int cmd)2092 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2093 unsigned int *killed, int cmd)
2094 {
2095 struct snl_writer nw;
2096 struct snl_errmsg_data e = {};
2097 struct pfctl_nl_clear_states attrs = {};
2098 struct nlmsghdr *hdr;
2099 uint32_t seq_id;
2100 int family_id;
2101
2102 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2103 if (family_id == 0)
2104 return (ENOTSUP);
2105
2106 snl_init_writer(&h->ss, &nw);
2107 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
2108 hdr->nlmsg_flags |= NLM_F_DUMP;
2109
2110 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id);
2111 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid));
2112 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction);
2113 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af);
2114 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto);
2115 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src);
2116 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst);
2117 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr);
2118 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname);
2119 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label);
2120 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match);
2121 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat);
2122
2123 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2124 return (ENXIO);
2125
2126 seq_id = hdr->nlmsg_seq;
2127
2128 if (! snl_send_message(&h->ss, hdr))
2129 return (ENXIO);
2130
2131 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2132 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs))
2133 continue;
2134 }
2135
2136 if (killed)
2137 *killed = attrs.killed;
2138
2139 return (e.error);
2140 }
2141
2142 int
pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2143 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2144 unsigned int *killed)
2145 {
2146 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES));
2147 }
2148
2149 int
pfctl_kill_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2150 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2151 unsigned int *killed)
2152 {
2153 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES));
2154 }
2155
2156 static int
_pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed,uint64_t cmd)2157 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2158 unsigned int *killed, uint64_t cmd)
2159 {
2160 struct pfctl_handle *h;
2161 int ret;
2162
2163 h = pfctl_open(PF_DEVICE);
2164 if (h == NULL)
2165 return (ENODEV);
2166
2167 ret = _pfctl_clear_states_h(h, kill, killed, cmd);
2168 pfctl_close(h);
2169
2170 return (ret);
2171 }
2172
2173 int
pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2174 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2175 unsigned int *killed)
2176 {
2177 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES));
2178 }
2179
2180 int
pfctl_kill_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2181 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed)
2182 {
2183 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES));
2184 }
2185
2186 int
pfctl_clear_rules(int dev,const char * anchorname)2187 pfctl_clear_rules(int dev, const char *anchorname)
2188 {
2189 struct pfioc_trans trans;
2190 struct pfioc_trans_e transe[2];
2191 int ret;
2192
2193 bzero(&trans, sizeof(trans));
2194 bzero(&transe, sizeof(transe));
2195
2196 transe[0].rs_num = PF_RULESET_SCRUB;
2197 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2198 >= sizeof(transe[0].anchor))
2199 return (E2BIG);
2200
2201 transe[1].rs_num = PF_RULESET_FILTER;
2202 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2203 >= sizeof(transe[1].anchor))
2204 return (E2BIG);
2205
2206 trans.size = 2;
2207 trans.esize = sizeof(transe[0]);
2208 trans.array = transe;
2209
2210 ret = ioctl(dev, DIOCXBEGIN, &trans);
2211 if (ret != 0)
2212 return (errno);
2213 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2214 if (ret != 0)
2215 return (errno);
2216
2217 return (0);
2218 }
2219
2220 int
pfctl_clear_nat(int dev,const char * anchorname)2221 pfctl_clear_nat(int dev, const char *anchorname)
2222 {
2223 struct pfioc_trans trans;
2224 struct pfioc_trans_e transe[3];
2225 int ret;
2226
2227 bzero(&trans, sizeof(trans));
2228 bzero(&transe, sizeof(transe));
2229
2230 transe[0].rs_num = PF_RULESET_NAT;
2231 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2232 >= sizeof(transe[0].anchor))
2233 return (E2BIG);
2234
2235 transe[1].rs_num = PF_RULESET_BINAT;
2236 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2237 >= sizeof(transe[0].anchor))
2238 return (E2BIG);
2239
2240 transe[2].rs_num = PF_RULESET_RDR;
2241 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor))
2242 >= sizeof(transe[2].anchor))
2243 return (E2BIG);
2244
2245 trans.size = 3;
2246 trans.esize = sizeof(transe[0]);
2247 trans.array = transe;
2248
2249 ret = ioctl(dev, DIOCXBEGIN, &trans);
2250 if (ret != 0)
2251 return (errno);
2252 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2253 if (ret != 0)
2254 return (errno);
2255
2256 return (0);
2257 }
2258
2259 int
pfctl_clear_eth_rules(int dev,const char * anchorname)2260 pfctl_clear_eth_rules(int dev, const char *anchorname)
2261 {
2262 struct pfioc_trans trans;
2263 struct pfioc_trans_e transe;
2264 int ret;
2265
2266 bzero(&trans, sizeof(trans));
2267 bzero(&transe, sizeof(transe));
2268
2269 transe.rs_num = PF_RULESET_ETH;
2270 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor))
2271 >= sizeof(transe.anchor))
2272 return (E2BIG);
2273
2274 trans.size = 1;
2275 trans.esize = sizeof(transe);
2276 trans.array = &transe;
2277
2278 ret = ioctl(dev, DIOCXBEGIN, &trans);
2279 if (ret != 0)
2280 return (errno);
2281 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2282 if (ret != 0)
2283 return (errno);
2284
2285 return (0);
2286 }
2287
2288 static int
_pfctl_get_limit(int dev,const int index,uint * limit)2289 _pfctl_get_limit(int dev, const int index, uint *limit)
2290 {
2291 struct pfioc_limit pl;
2292
2293 bzero(&pl, sizeof(pl));
2294 pl.index = index;
2295
2296 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1)
2297 return (errno);
2298
2299 *limit = pl.limit;
2300
2301 return (0);
2302 }
2303
2304 int
pfctl_set_syncookies(int dev,const struct pfctl_syncookies * s)2305 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s)
2306 {
2307 struct pfioc_nv nv;
2308 nvlist_t *nvl;
2309 int ret;
2310 uint state_limit;
2311 uint64_t lim, hi, lo;
2312
2313 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2314 if (ret != 0)
2315 return (ret);
2316
2317 if (state_limit == 0)
2318 state_limit = INT_MAX;
2319
2320 lim = state_limit;
2321 hi = lim * s->highwater / 100;
2322 lo = lim * s->lowwater / 100;
2323
2324 if (lo == hi)
2325 hi++;
2326
2327 nvl = nvlist_create(0);
2328
2329 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER);
2330 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE);
2331 nvlist_add_number(nvl, "highwater", hi);
2332 nvlist_add_number(nvl, "lowwater", lo);
2333
2334 nv.data = nvlist_pack(nvl, &nv.len);
2335 nv.size = nv.len;
2336 nvlist_destroy(nvl);
2337 nvl = NULL;
2338
2339 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv);
2340
2341 free(nv.data);
2342 if (ret != 0)
2343 return (errno);
2344
2345 return (0);
2346 }
2347
2348 int
pfctl_get_syncookies(int dev,struct pfctl_syncookies * s)2349 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s)
2350 {
2351 nvlist_t *nvl;
2352 int ret;
2353 uint state_limit;
2354 bool enabled, adaptive;
2355
2356 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2357 if (ret != 0)
2358 return (ret);
2359
2360 if (state_limit == 0)
2361 state_limit = INT_MAX;
2362
2363 bzero(s, sizeof(*s));
2364
2365 nvl = nvlist_create(0);
2366
2367 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) {
2368 ret = errno;
2369 goto out;
2370 }
2371
2372 enabled = nvlist_get_bool(nvl, "enabled");
2373 adaptive = nvlist_get_bool(nvl, "adaptive");
2374
2375 if (enabled) {
2376 if (adaptive)
2377 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE;
2378 else
2379 s->mode = PFCTL_SYNCOOKIES_ALWAYS;
2380 } else {
2381 s->mode = PFCTL_SYNCOOKIES_NEVER;
2382 }
2383
2384 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit;
2385 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit;
2386 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states");
2387
2388 out:
2389 nvlist_destroy(nvl);
2390 return (ret);
2391 }
2392
2393 int
pfctl_table_add_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * nadd,int flags)2394 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2395 *addr, int size, int *nadd, int flags)
2396 {
2397 struct pfioc_table io;
2398
2399 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2400 return (EINVAL);
2401 }
2402 bzero(&io, sizeof io);
2403 io.pfrio_flags = flags;
2404 io.pfrio_table = *tbl;
2405 io.pfrio_buffer = addr;
2406 io.pfrio_esize = sizeof(*addr);
2407 io.pfrio_size = size;
2408
2409 if (ioctl(dev, DIOCRADDADDRS, &io))
2410 return (errno);
2411 if (nadd != NULL)
2412 *nadd = io.pfrio_nadd;
2413 return (0);
2414 }
2415
2416 static void
snl_add_msg_attr_table(struct snl_writer * nw,uint32_t type,const struct pfr_table * tbl)2417 snl_add_msg_attr_table(struct snl_writer *nw, uint32_t type,
2418 const struct pfr_table *tbl)
2419 {
2420 int off;
2421
2422 off = snl_add_msg_attr_nested(nw, type);
2423
2424 snl_add_msg_attr_string(nw, PF_T_ANCHOR, tbl->pfrt_anchor);
2425 snl_add_msg_attr_string(nw, PF_T_NAME, tbl->pfrt_name);
2426 snl_add_msg_attr_u32(nw, PF_T_TABLE_FLAGS, tbl->pfrt_flags);
2427
2428 snl_end_attr_nested(nw, off);
2429 }
2430
2431 static void
snl_add_msg_attr_pfr_addr(struct snl_writer * nw,uint32_t type,const struct pfr_addr * addr)2432 snl_add_msg_attr_pfr_addr(struct snl_writer *nw, uint32_t type,
2433 const struct pfr_addr *addr)
2434 {
2435 int off;
2436
2437 off = snl_add_msg_attr_nested(nw, type);
2438
2439 snl_add_msg_attr_u8(nw, PFR_A_AF, addr->pfra_af);
2440 snl_add_msg_attr_u8(nw, PFR_A_NET, addr->pfra_net);
2441 snl_add_msg_attr_bool(nw, PFR_A_NOT, addr->pfra_not);
2442 snl_add_msg_attr_ip6(nw, PFR_A_ADDR, &addr->pfra_ip6addr);
2443
2444 snl_end_attr_nested(nw, off);
2445 }
2446
2447 static struct snl_attr_parser ap_table_add_addr[] = {
2448 { .type = PF_TA_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 },
2449 };
2450 SNL_DECLARE_PARSER(table_add_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_add_addr);
2451
2452 static int
_pfctl_table_add_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * nadd,int flags)2453 _pfctl_table_add_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr
2454 *addrs, int size, int *nadd, int flags)
2455 {
2456 struct snl_writer nw;
2457 struct snl_errmsg_data e = {};
2458 struct nlmsghdr *hdr;
2459 uint32_t seq_id;
2460 uint32_t added;
2461 int family_id;
2462
2463 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2464 if (family_id == 0)
2465 return (ENOTSUP);
2466
2467 snl_init_writer(&h->ss, &nw);
2468 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_ADD_ADDR);
2469
2470 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
2471 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
2472 for (int i = 0; i < size; i++)
2473 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]);
2474
2475 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2476 return (ENXIO);
2477 seq_id = hdr->nlmsg_seq;
2478
2479 if (! snl_send_message(&h->ss, hdr))
2480 return (ENXIO);
2481
2482 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2483 if (! snl_parse_nlmsg(&h->ss, hdr, &table_add_addr_parser, &added))
2484 continue;
2485 }
2486
2487 if (nadd)
2488 *nadd = added;
2489
2490 return (e.error);
2491 }
2492
2493 int
pfctl_table_add_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * nadd,int flags)2494 pfctl_table_add_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr
2495 *addr, int size, int *nadd, int flags)
2496 {
2497 int ret;
2498 int off = 0;
2499 int partial_added;
2500 int chunk_size;
2501
2502 do {
2503 chunk_size = MIN(size - off, 256);
2504 ret = _pfctl_table_add_addrs_h(h, tbl, &addr[off], chunk_size, &partial_added, flags);
2505 if (ret != 0)
2506 break;
2507 if (nadd)
2508 *nadd += partial_added;
2509 off += chunk_size;
2510 } while (off < size);
2511
2512 return (ret);
2513 }
2514
2515 static struct snl_attr_parser ap_table_del_addr[] = {
2516 { .type = PF_TA_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 },
2517 };
2518 SNL_DECLARE_PARSER(table_del_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_del_addr);
2519 static int
_pfctl_table_del_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * ndel,int flags)2520 _pfctl_table_del_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr
2521 *addrs, int size, int *ndel, int flags)
2522 {
2523 struct snl_writer nw;
2524 struct snl_errmsg_data e = {};
2525 struct nlmsghdr *hdr;
2526 uint32_t seq_id;
2527 uint32_t deleted;
2528 int family_id;
2529
2530 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2531 if (family_id == 0)
2532 return (ENOTSUP);
2533
2534 snl_init_writer(&h->ss, &nw);
2535 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_DEL_ADDR);
2536
2537 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
2538 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
2539 for (int i = 0; i < size; i++)
2540 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]);
2541
2542 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2543 return (ENXIO);
2544 seq_id = hdr->nlmsg_seq;
2545
2546 if (! snl_send_message(&h->ss, hdr))
2547 return (ENXIO);
2548
2549 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2550 if (! snl_parse_nlmsg(&h->ss, hdr, &table_del_addr_parser, &deleted))
2551 continue;
2552 }
2553
2554 if (ndel)
2555 *ndel = deleted;
2556
2557 return (e.error);
2558 }
2559
2560 int
pfctl_table_del_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * ndel,int flags)2561 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2562 *addr, int size, int *ndel, int flags)
2563 {
2564 struct pfioc_table io;
2565
2566 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2567 return (EINVAL);
2568 }
2569 bzero(&io, sizeof io);
2570 io.pfrio_flags = flags;
2571 io.pfrio_table = *tbl;
2572 io.pfrio_buffer = addr;
2573 io.pfrio_esize = sizeof(*addr);
2574 io.pfrio_size = size;
2575
2576 if (ioctl(dev, DIOCRDELADDRS, &io))
2577 return (errno);
2578 if (ndel != NULL)
2579 *ndel = io.pfrio_ndel;
2580 return (0);
2581 }
2582
2583 int
pfctl_table_del_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * ndel,int flags)2584 pfctl_table_del_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr
2585 *addr, int size, int *ndel, int flags)
2586 {
2587 int ret;
2588 int off = 0;
2589 int partial_deleted;
2590 int chunk_size;
2591
2592 do {
2593 chunk_size = MIN(size - off, 256);
2594 ret = _pfctl_table_del_addrs_h(h, tbl, &addr[off], chunk_size,
2595 &partial_deleted, flags);
2596 if (ret != 0)
2597 break;
2598 if (ndel)
2599 *ndel += partial_deleted;
2600 off += chunk_size;
2601 } while (off < size);
2602
2603 return (ret);
2604 }
2605
2606 struct pfctl_change {
2607 int add;
2608 int del;
2609 int change;
2610 };
2611 #define _OUT(_field) offsetof(struct pfctl_change, _field)
2612 static struct snl_attr_parser ap_table_set_addr[] = {
2613 { .type = PF_TA_NBR_ADDED, .off = _OUT(add), .cb = snl_attr_get_uint32 },
2614 { .type = PF_TA_NBR_DELETED, .off = _OUT(del), .cb = snl_attr_get_uint32 },
2615 { .type = PF_TA_NBR_CHANGED, .off = _OUT(change), .cb = snl_attr_get_uint32 },
2616 };
2617 #undef _OUT
2618 SNL_DECLARE_PARSER(table_set_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_set_addr);
2619
2620 static int
_pfctl_table_set_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * nadd,int * ndel,int * nchange,int flags)2621 _pfctl_table_set_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr
2622 *addrs, int size, int *nadd, int *ndel, int *nchange, int flags)
2623 {
2624 struct snl_writer nw;
2625 struct snl_errmsg_data e = {};
2626 struct nlmsghdr *hdr;
2627 struct pfctl_change change = { 0 };
2628 uint32_t seq_id;
2629 int family_id;
2630
2631 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2632 if (family_id == 0)
2633 return (ENOTSUP);
2634
2635 snl_init_writer(&h->ss, &nw);
2636 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_SET_ADDR);
2637
2638 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
2639 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
2640 for (int i = 0; i < size; i++)
2641 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]);
2642
2643 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2644 return (ENXIO);
2645 seq_id = hdr->nlmsg_seq;
2646
2647 if (! snl_send_message(&h->ss, hdr))
2648 return (ENXIO);
2649
2650 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2651 if (! snl_parse_nlmsg(&h->ss, hdr, &table_set_addr_parser, &change))
2652 continue;
2653 }
2654
2655 if (nadd)
2656 *nadd = change.add;
2657 if (ndel)
2658 *ndel = change.del;
2659 if (nchange)
2660 *nchange = change.change;
2661
2662 return (e.error);
2663 }
2664
2665 int
pfctl_table_set_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * nadd,int * ndel,int * nchange,int flags)2666 pfctl_table_set_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl,
2667 struct pfr_addr *addr, int size, int *nadd, int *ndel,
2668 int *nchange, int flags)
2669 {
2670 int ret;
2671 int off = 0;
2672 int partial_add, partial_del, partial_change;
2673 int chunk_size;
2674
2675 do {
2676 flags &= ~(PFR_FLAG_START | PFR_FLAG_DONE);
2677 if (off == 0)
2678 flags |= PFR_FLAG_START;
2679 chunk_size = MIN(size - off, 256);
2680 if ((chunk_size + off) == size)
2681 flags |= PFR_FLAG_DONE;
2682 ret = _pfctl_table_set_addrs_h(h, tbl, &addr[off], chunk_size,
2683 &partial_add, &partial_del, &partial_change, flags);
2684 if (ret != 0)
2685 break;
2686 if (! (flags & PFR_FLAG_DONE)) {
2687 assert(partial_del == 0);
2688 }
2689 if (nadd)
2690 *nadd += partial_add;
2691 if (ndel)
2692 *ndel += partial_del;
2693 if (nchange)
2694 *nchange += partial_change;
2695 off += chunk_size;
2696 } while (off < size);
2697
2698 return (ret);
2699 }
2700
2701 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)2702 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2703 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags)
2704 {
2705 struct pfioc_table io;
2706
2707 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2708 return (EINVAL);
2709 }
2710 bzero(&io, sizeof io);
2711 io.pfrio_flags = flags;
2712 io.pfrio_table = *tbl;
2713 io.pfrio_buffer = addr;
2714 io.pfrio_esize = sizeof(*addr);
2715 io.pfrio_size = size;
2716 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0;
2717 if (ioctl(dev, DIOCRSETADDRS, &io))
2718 return (errno);
2719 if (nadd != NULL)
2720 *nadd = io.pfrio_nadd;
2721 if (ndel != NULL)
2722 *ndel = io.pfrio_ndel;
2723 if (nchange != NULL)
2724 *nchange = io.pfrio_nchange;
2725 if (size2 != NULL)
2726 *size2 = io.pfrio_size2;
2727 return (0);
2728 }
2729
pfctl_table_get_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int * size,int flags)2730 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr,
2731 int *size, int flags)
2732 {
2733 struct pfioc_table io;
2734
2735 if (tbl == NULL || size == NULL || *size < 0 ||
2736 (*size && addr == NULL)) {
2737 return (EINVAL);
2738 }
2739 bzero(&io, sizeof io);
2740 io.pfrio_flags = flags;
2741 io.pfrio_table = *tbl;
2742 io.pfrio_buffer = addr;
2743 io.pfrio_esize = sizeof(*addr);
2744 io.pfrio_size = *size;
2745 if (ioctl(dev, DIOCRGETADDRS, &io))
2746 return (errno);
2747 *size = io.pfrio_size;
2748 return (0);
2749 }
2750
2751 struct nl_addrs {
2752 size_t max;
2753 struct pfr_addr *addrs;
2754 size_t count;
2755 size_t total_count;
2756 };
2757
2758 #define _OUT(_field) offsetof(struct pfr_addr, _field)
2759 static const struct snl_attr_parser ap_pfr_addr[] = {
2760 { .type = PFR_A_AF, .off = _OUT(pfra_af), .cb = snl_attr_get_uint32 },
2761 { .type = PFR_A_NET, .off = _OUT(pfra_net), .cb = snl_attr_get_uint8 },
2762 { .type = PFR_A_NOT, .off = _OUT(pfra_not), .cb = snl_attr_get_bool },
2763 { .type = PFR_A_ADDR, .off = _OUT(pfra_ip6addr), .cb = snl_attr_get_in6_addr },
2764 };
2765 #undef _OUT
2766 SNL_DECLARE_ATTR_PARSER(pfr_addr_parser, ap_pfr_addr);
2767
2768 static bool
snl_attr_get_pfr_addrs(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)2769 snl_attr_get_pfr_addrs(struct snl_state *ss, struct nlattr *nla,
2770 const void *arg __unused, void *target)
2771 {
2772 struct nl_addrs *a = (struct nl_addrs *)target;
2773 bool ret;
2774
2775 if (a->count >= a->max)
2776 return (false);
2777
2778 ret = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla),
2779 &pfr_addr_parser, &a->addrs[a->count]);
2780 if (ret)
2781 a->count++;
2782
2783 return (ret);
2784 }
2785
2786 #define _OUT(_field) offsetof(struct nl_addrs, _field)
2787 static struct snl_attr_parser ap_table_get_addr[] = {
2788 { .type = PF_TA_ADDR, .off = 0, .cb = snl_attr_get_pfr_addrs },
2789 { .type = PF_TA_ADDR_COUNT, .off = _OUT(total_count), .cb = snl_attr_get_uint32 },
2790 };
2791 #undef _OUT
2792 SNL_DECLARE_PARSER(table_get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_get_addr);
2793 int
pfctl_table_get_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addr,int * size,int flags)2794 pfctl_table_get_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl,
2795 struct pfr_addr *addr, int *size, int flags)
2796 {
2797 struct nl_addrs addrs = { 0 };
2798 struct snl_writer nw;
2799 struct snl_errmsg_data e = {};
2800 struct nlmsghdr *hdr;
2801 uint32_t seq_id;
2802 int family_id;
2803
2804 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2805 if (family_id == 0)
2806 return (ENOTSUP);
2807
2808 snl_init_writer(&h->ss, &nw);
2809 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_GET_ADDR);
2810
2811 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
2812 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
2813
2814 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2815 return (ENXIO);
2816
2817 seq_id = hdr->nlmsg_seq;
2818 if (! snl_send_message(&h->ss, hdr))
2819 return (ENXIO);
2820
2821 addrs.addrs = addr;
2822 addrs.max = *size;
2823 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2824 if (! snl_parse_nlmsg(&h->ss, hdr, &table_get_addr_parser, &addrs))
2825 continue;
2826 }
2827
2828 *size = addrs.total_count;
2829
2830 return (e.error);
2831 }
2832
2833 int
pfctl_set_statusif(struct pfctl_handle * h,const char * ifname)2834 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname)
2835 {
2836 struct snl_writer nw;
2837 struct snl_errmsg_data e = {};
2838 struct nlmsghdr *hdr;
2839 uint32_t seq_id;
2840 int family_id;
2841
2842 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2843 if (family_id == 0)
2844 return (ENOTSUP);
2845
2846 snl_init_writer(&h->ss, &nw);
2847 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF);
2848
2849 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname);
2850
2851 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2852 return (ENXIO);
2853
2854 seq_id = hdr->nlmsg_seq;
2855
2856 if (! snl_send_message(&h->ss, hdr))
2857 return (ENXIO);
2858
2859 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2860 }
2861
2862 return (e.error);
2863 }
2864
2865 #define _IN(_field) offsetof(struct genlmsghdr, _field)
2866 #define _OUT(_field) offsetof(struct pfctl_natlook, _field)
2867 static struct snl_attr_parser ap_natlook[] = {
2868 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr },
2869 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr },
2870 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 },
2871 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 },
2872 };
2873 #undef _IN
2874 #undef _OUT
2875 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, snl_f_p_empty, ap_natlook);
2876
2877 int
pfctl_natlook(struct pfctl_handle * h,const struct pfctl_natlook_key * k,struct pfctl_natlook * r)2878 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k,
2879 struct pfctl_natlook *r)
2880 {
2881 struct snl_writer nw;
2882 struct snl_errmsg_data e = {};
2883 struct nlmsghdr *hdr;
2884 uint32_t seq_id;
2885 int family_id;
2886
2887 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2888 if (family_id == 0)
2889 return (ENOTSUP);
2890
2891 snl_init_writer(&h->ss, &nw);
2892 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK);
2893 hdr->nlmsg_flags |= NLM_F_DUMP;
2894
2895 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af);
2896 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction);
2897 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto);
2898 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6);
2899 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6);
2900 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport);
2901 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport);
2902
2903 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2904 return (ENXIO);
2905
2906 seq_id = hdr->nlmsg_seq;
2907
2908 if (! snl_send_message(&h->ss, hdr))
2909 return (ENXIO);
2910
2911 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2912 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r))
2913 continue;
2914 }
2915
2916 return (e.error);
2917 }
2918
2919 int
pfctl_set_debug(struct pfctl_handle * h,uint32_t level)2920 pfctl_set_debug(struct pfctl_handle *h, uint32_t level)
2921 {
2922 struct snl_writer nw;
2923 struct snl_errmsg_data e = {};
2924 struct nlmsghdr *hdr;
2925 uint32_t seq_id;
2926 int family_id;
2927
2928 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2929 if (family_id == 0)
2930 return (ENOTSUP);
2931
2932 snl_init_writer(&h->ss, &nw);
2933 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG);
2934
2935 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level);
2936
2937 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2938 return (ENXIO);
2939
2940 seq_id = hdr->nlmsg_seq;
2941
2942 if (! snl_send_message(&h->ss, hdr))
2943 return (ENXIO);
2944
2945 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2946 }
2947
2948 return (e.error);
2949 }
2950
2951 int
pfctl_set_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t seconds)2952 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds)
2953 {
2954 struct snl_writer nw;
2955 struct snl_errmsg_data e = {};
2956 struct nlmsghdr *hdr;
2957 uint32_t seq_id;
2958 int family_id;
2959
2960 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2961 if (family_id == 0)
2962 return (ENOTSUP);
2963
2964 snl_init_writer(&h->ss, &nw);
2965 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT);
2966
2967 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2968 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds);
2969
2970 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2971 return (ENXIO);
2972
2973 seq_id = hdr->nlmsg_seq;
2974
2975 if (! snl_send_message(&h->ss, hdr))
2976 return (ENXIO);
2977
2978 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2979 }
2980
2981 return (e.error);
2982 }
2983
2984 struct pfctl_nl_timeout {
2985 uint32_t seconds;
2986 };
2987 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field)
2988 static struct snl_attr_parser ap_get_timeout[] = {
2989 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
2990 };
2991 #undef _OUT
2992 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, snl_f_p_empty, ap_get_timeout);
2993
2994 int
pfctl_get_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t * seconds)2995 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds)
2996 {
2997 struct snl_writer nw;
2998 struct pfctl_nl_timeout to = {};
2999 struct snl_errmsg_data e = {};
3000 struct nlmsghdr *hdr;
3001 uint32_t seq_id;
3002 int family_id;
3003
3004 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3005 if (family_id == 0)
3006 return (ENOTSUP);
3007
3008 snl_init_writer(&h->ss, &nw);
3009 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT);
3010 hdr->nlmsg_flags |= NLM_F_DUMP;
3011
3012 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
3013
3014 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3015 return (ENXIO);
3016
3017 seq_id = hdr->nlmsg_seq;
3018
3019 if (! snl_send_message(&h->ss, hdr))
3020 return (ENXIO);
3021
3022 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3023 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to))
3024 continue;
3025 }
3026
3027 if (seconds != NULL)
3028 *seconds = to.seconds;
3029
3030 return (e.error);
3031 }
3032
3033 int
pfctl_set_limit(struct pfctl_handle * h,const int index,const uint limit)3034 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit)
3035 {
3036 struct snl_writer nw;
3037 struct snl_errmsg_data e = {};
3038 struct nlmsghdr *hdr;
3039 uint32_t seq_id;
3040 int family_id;
3041
3042 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3043 if (family_id == 0)
3044 return (ENOTSUP);
3045
3046 snl_init_writer(&h->ss, &nw);
3047 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT);
3048
3049 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
3050 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit);
3051
3052 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3053 return (ENXIO);
3054
3055 seq_id = hdr->nlmsg_seq;
3056
3057 if (! snl_send_message(&h->ss, hdr))
3058 return (ENXIO);
3059
3060 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3061 }
3062
3063 return (e.error);
3064 }
3065
3066 struct pfctl_nl_limit {
3067 unsigned int limit;
3068 };
3069 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field)
3070 static struct snl_attr_parser ap_get_limit[] = {
3071 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
3072 };
3073 #undef _OUT
3074 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, snl_f_p_empty, ap_get_limit);
3075
3076 int
pfctl_get_limit(struct pfctl_handle * h,const int index,uint * limit)3077 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit)
3078 {
3079 struct snl_writer nw;
3080 struct pfctl_nl_limit li = {};
3081 struct snl_errmsg_data e = {};
3082 struct nlmsghdr *hdr;
3083 uint32_t seq_id;
3084 int family_id;
3085
3086 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3087 if (family_id == 0)
3088 return (ENOTSUP);
3089
3090 snl_init_writer(&h->ss, &nw);
3091 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT);
3092 hdr->nlmsg_flags |= NLM_F_DUMP;
3093
3094 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
3095
3096 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3097 return (ENXIO);
3098
3099 seq_id = hdr->nlmsg_seq;
3100
3101 if (! snl_send_message(&h->ss, hdr))
3102 return (ENXIO);
3103
3104 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3105 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li))
3106 continue;
3107 }
3108
3109 if (limit != NULL)
3110 *limit = li.limit;
3111
3112 return (e.error);
3113 }
3114
3115 struct pfctl_nl_begin_addrs {
3116 uint32_t ticket;
3117 };
3118 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field)
3119 static struct snl_attr_parser ap_begin_addrs[] = {
3120 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
3121 };
3122 #undef _OUT
3123 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_begin_addrs);
3124
3125 int
pfctl_begin_addrs(struct pfctl_handle * h,uint32_t * ticket)3126 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket)
3127 {
3128 struct snl_writer nw;
3129 struct pfctl_nl_begin_addrs attrs = {};
3130 struct snl_errmsg_data e = {};
3131 struct nlmsghdr *hdr;
3132 uint32_t seq_id;
3133 int family_id;
3134
3135 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3136 if (family_id == 0)
3137 return (ENOTSUP);
3138
3139 snl_init_writer(&h->ss, &nw);
3140 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS);
3141 hdr->nlmsg_flags |= NLM_F_DUMP;
3142
3143 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3144 return (ENXIO);
3145
3146 seq_id = hdr->nlmsg_seq;
3147
3148 if (! snl_send_message(&h->ss, hdr))
3149 return (ENXIO);
3150
3151 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3152 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs))
3153 continue;
3154 }
3155
3156 if (ticket != NULL)
3157 *ticket = attrs.ticket;
3158
3159 return (e.error);
3160 }
3161
3162 int
pfctl_add_addr(struct pfctl_handle * h,const struct pfioc_pooladdr * pa,int which)3163 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which)
3164 {
3165 struct snl_writer nw;
3166 struct snl_errmsg_data e = {};
3167 struct nlmsghdr *hdr;
3168 uint32_t seq_id;
3169 int family_id;
3170
3171 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3172 if (family_id == 0)
3173 return (ENOTSUP);
3174
3175 snl_init_writer(&h->ss, &nw);
3176 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR);
3177
3178 snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action);
3179 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket);
3180 snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr);
3181 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num);
3182 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action);
3183 snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last);
3184 snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af);
3185 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor);
3186 snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr);
3187 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
3188
3189 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3190 return (ENXIO);
3191
3192 seq_id = hdr->nlmsg_seq;
3193
3194 if (! snl_send_message(&h->ss, hdr))
3195 return (ENXIO);
3196
3197 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3198 }
3199
3200 return (e.error);
3201 }
3202
3203 static const struct snl_attr_parser ap_get_addrs[] = {
3204 { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 },
3205 };
3206 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addrs);
3207
3208 int
pfctl_get_addrs(struct pfctl_handle * h,uint32_t ticket,uint32_t r_num,uint8_t r_action,const char * anchor,uint32_t * nr,int which)3209 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
3210 uint8_t r_action, const char *anchor, uint32_t *nr, int which)
3211 {
3212 struct snl_writer nw;
3213 struct snl_errmsg_data e = {};
3214 struct nlmsghdr *hdr;
3215 uint32_t seq_id;
3216 int family_id;
3217
3218 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3219 if (family_id == 0)
3220 return (ENOTSUP);
3221
3222 snl_init_writer(&h->ss, &nw);
3223 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS);
3224
3225 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
3226 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
3227 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
3228 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
3229 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
3230
3231 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3232 return (ENXIO);
3233
3234 seq_id = hdr->nlmsg_seq;
3235
3236 if (! snl_send_message(&h->ss, hdr))
3237 return (ENXIO);
3238
3239 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3240 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr))
3241 continue;
3242 }
3243
3244 return (e.error);
3245 }
3246
3247 #define _OUT(_field) offsetof(struct pf_pooladdr, _field)
3248 static const struct snl_attr_parser ap_pool_addr[] = {
3249 { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
3250 { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
3251 };
3252 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr);
3253 #undef _OUT
3254
3255 #define _OUT(_field) offsetof(struct pfioc_pooladdr, _field)
3256 static const struct snl_attr_parser ap_get_addr[] = {
3257 { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 },
3258 { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
3259 { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
3260 { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 },
3261 { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 },
3262 { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 },
3263 { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
3264 { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string },
3265 { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested },
3266 };
3267 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addr);
3268 #undef _OUT
3269
3270 int
pfctl_get_addr(struct pfctl_handle * h,uint32_t ticket,uint32_t r_num,uint8_t r_action,const char * anchor,uint32_t nr,struct pfioc_pooladdr * pa,int which)3271 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
3272 uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa,
3273 int which)
3274 {
3275 struct snl_writer nw;
3276 struct snl_errmsg_data e = {};
3277 struct nlmsghdr *hdr;
3278 uint32_t seq_id;
3279 int family_id;
3280
3281 family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3282 if (family_id == 0)
3283 return (ENOTSUP);
3284
3285 snl_init_writer(&h->ss, &nw);
3286 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR);
3287
3288 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
3289 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
3290 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
3291 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
3292 snl_add_msg_attr_u32(&nw, PF_AA_NR, nr);
3293 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
3294
3295 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3296 return (ENXIO);
3297
3298 seq_id = hdr->nlmsg_seq;
3299
3300 if (! snl_send_message(&h->ss, hdr))
3301 return (ENXIO);
3302
3303 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3304 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa))
3305 continue;
3306 }
3307
3308 return (e.error);
3309 }
3310
3311 #define _OUT(_field) offsetof(struct pfioc_ruleset, _field)
3312 static const struct snl_attr_parser ap_ruleset[] = {
3313 { .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
3314 { .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string },
3315 };
3316 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, snl_f_p_empty, ap_ruleset);
3317 #undef _OUT
3318
3319 int
pfctl_get_rulesets(struct pfctl_handle * h,const char * path,uint32_t * nr)3320 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr)
3321 {
3322 struct snl_writer nw;
3323 struct snl_errmsg_data e = {};
3324 struct nlmsghdr *hdr;
3325 struct pfioc_ruleset rs = {};
3326 uint32_t seq_id;
3327 int family_id;
3328
3329 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3330 if (family_id == 0)
3331 return (ENOTSUP);
3332
3333 snl_init_writer(&h->ss, &nw);
3334 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS);
3335
3336 snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
3337
3338 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3339 return (ENXIO);
3340
3341 seq_id = hdr->nlmsg_seq;
3342
3343 if (! snl_send_message(&h->ss, hdr))
3344 return (ENXIO);
3345
3346 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3347 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs))
3348 continue;
3349 }
3350
3351 *nr = rs.nr;
3352
3353 return (e.error);
3354 }
3355
3356 int
pfctl_get_ruleset(struct pfctl_handle * h,const char * path,uint32_t nr,struct pfioc_ruleset * rs)3357 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs)
3358 {
3359 struct snl_writer nw;
3360 struct snl_errmsg_data e = {};
3361 struct nlmsghdr *hdr;
3362 uint32_t seq_id;
3363 int family_id;
3364
3365 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3366 if (family_id == 0)
3367 return (ENOTSUP);
3368
3369 snl_init_writer(&h->ss, &nw);
3370 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET);
3371
3372 snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
3373 snl_add_msg_attr_u32(&nw, PF_RS_NR, nr);
3374
3375 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3376 return (ENXIO);
3377
3378 seq_id = hdr->nlmsg_seq;
3379
3380 if (! snl_send_message(&h->ss, hdr))
3381 return (ENXIO);
3382
3383 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3384 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs))
3385 continue;
3386 }
3387
3388 rs->nr = nr;
3389 strlcpy(rs->path, path, sizeof(rs->path));
3390
3391 return (e.error);
3392 }
3393
3394 #define _OUT(_field) offsetof(struct pfctl_src_node, _field)
3395 static struct snl_attr_parser ap_srcnode[] = {
3396 { .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr },
3397 { .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr },
3398 { .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
3399 { .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
3400 { .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
3401 { .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
3402 { .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
3403 { .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
3404 { .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 },
3405 { .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
3406 { .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 },
3407 { .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 },
3408 { .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 },
3409 { .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested },
3410 { .type = PF_SN_RAF, .off = _OUT(raf), .cb = snl_attr_get_uint8 },
3411 { .type = PF_SN_NODE_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 },
3412 };
3413 #undef _OUT
3414 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, snl_f_p_empty, ap_srcnode);
3415
3416 int
pfctl_get_srcnodes(struct pfctl_handle * h,pfctl_get_srcnode_fn fn,void * arg)3417 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg)
3418 {
3419 struct snl_writer nw;
3420 struct pfctl_src_node sn;
3421 struct snl_errmsg_data e = {};
3422 struct nlmsghdr *hdr;
3423 uint32_t seq_id;
3424 int family_id;
3425 int ret;
3426
3427 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3428 if (family_id == 0)
3429 return (ENOTSUP);
3430
3431 snl_init_writer(&h->ss, &nw);
3432 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES);
3433
3434 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3435 return (ENXIO);
3436
3437 seq_id = hdr->nlmsg_seq;
3438
3439 if (!snl_send_message(&h->ss, hdr))
3440 return (ENXIO);
3441
3442 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3443 bzero(&sn, sizeof(sn));
3444 if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn))
3445 continue;
3446
3447 ret = fn(&sn, arg);
3448 if (ret != 0)
3449 return (ret);
3450 }
3451
3452 return (e.error);
3453 }
3454
3455 static struct snl_attr_parser ap_ndel[] = {
3456 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 },
3457 };
3458 SNL_DECLARE_PARSER(ndel_parser, struct genlmsghdr, snl_f_p_empty, ap_ndel);
3459
3460 int
pfctl_clear_tables(struct pfctl_handle * h,struct pfr_table * filter,int * ndel,int flags)3461 pfctl_clear_tables(struct pfctl_handle *h, struct pfr_table *filter,
3462 int *ndel, int flags)
3463 {
3464 struct snl_writer nw;
3465 struct snl_errmsg_data e = {};
3466 struct nlmsghdr *hdr;
3467 uint32_t seq_id;
3468 int family_id;
3469
3470 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3471 if (family_id == 0)
3472 return (ENOTSUP);
3473
3474 snl_init_writer(&h->ss, &nw);
3475 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLEAR_TABLES);
3476
3477 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor);
3478 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name);
3479 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags);
3480 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3481
3482 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3483 return (ENXIO);
3484
3485 seq_id = hdr->nlmsg_seq;
3486
3487 if (!snl_send_message(&h->ss, hdr))
3488 return (ENXIO);
3489
3490 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3491 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel))
3492 continue;
3493 }
3494
3495 return (e.error);
3496 }
3497
3498 static struct snl_attr_parser ap_nadd[] = {
3499 { .type = PF_T_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 },
3500 };
3501 SNL_DECLARE_PARSER(nadd_parser, struct genlmsghdr, snl_f_p_empty, ap_nadd);
3502 int
pfctl_add_table(struct pfctl_handle * h,struct pfr_table * table,int * nadd,int flags)3503 pfctl_add_table(struct pfctl_handle *h, struct pfr_table *table,
3504 int *nadd, int flags)
3505 {
3506 struct snl_writer nw;
3507 struct snl_errmsg_data e = {};
3508 struct nlmsghdr *hdr;
3509 uint32_t seq_id;
3510 int family_id;
3511
3512 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3513 if (family_id == 0)
3514 return (ENOTSUP);
3515
3516 snl_init_writer(&h->ss, &nw);
3517 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_TABLE);
3518
3519 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor);
3520 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name);
3521 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags);
3522 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3523
3524 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3525 return (ENXIO);
3526
3527 seq_id = hdr->nlmsg_seq;
3528
3529 if (!snl_send_message(&h->ss, hdr))
3530 return (ENXIO);
3531
3532 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3533 if (!snl_parse_nlmsg(&h->ss, hdr, &nadd_parser, nadd))
3534 continue;
3535 }
3536
3537 return (e.error);
3538 }
3539
3540 int
pfctl_del_table(struct pfctl_handle * h,struct pfr_table * table,int * ndel,int flags)3541 pfctl_del_table(struct pfctl_handle *h, struct pfr_table *table,
3542 int *ndel, int flags)
3543 {
3544 struct snl_writer nw;
3545 struct snl_errmsg_data e = {};
3546 struct nlmsghdr *hdr;
3547 uint32_t seq_id;
3548 int family_id;
3549
3550 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3551 if (family_id == 0)
3552 return (ENOTSUP);
3553
3554 snl_init_writer(&h->ss, &nw);
3555 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_DEL_TABLE);
3556
3557 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor);
3558 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name);
3559 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags);
3560 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3561
3562 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3563 return (ENXIO);
3564
3565 seq_id = hdr->nlmsg_seq;
3566
3567 if (!snl_send_message(&h->ss, hdr))
3568 return (ENXIO);
3569
3570 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3571 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel))
3572 continue;
3573 }
3574
3575 return (e.error);
3576 }
3577
3578 static bool
snl_attr_get_uint64_into_int_array(struct snl_state * ss,struct nlattr * nla,const void * arg,void * target)3579 snl_attr_get_uint64_into_int_array(struct snl_state *ss, struct nlattr *nla,
3580 const void *arg, void *target)
3581 {
3582 uint64_t *u64target;
3583 struct snl_uint64_array a = {
3584 .count = 0,
3585 .max = (size_t)arg,
3586 };
3587 bool error;
3588
3589 u64target = malloc(a.max * sizeof(uint64_t));
3590 a.array = u64target;
3591
3592 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a);
3593 if (! error)
3594 return (error);
3595
3596 for (size_t i = 0; i < a.count; i++)
3597 ((int *)target)[i] = (int)u64target[i];
3598
3599 free(u64target);
3600
3601 return (true);
3602 }
3603
3604 #define _OUT(_field) offsetof(struct pfr_table, _field)
3605 static const struct snl_attr_parser ap_table[] = {
3606 { .type = PF_T_ANCHOR, .off = _OUT(pfrt_anchor), .arg = (void *)MAXPATHLEN, .cb = snl_attr_copy_string },
3607 { .type = PF_T_NAME, .off = _OUT(pfrt_name), .arg = (void *)PF_TABLE_NAME_SIZE, .cb =snl_attr_copy_string },
3608 { .type = PF_T_TABLE_FLAGS, .off = _OUT(pfrt_flags), .cb = snl_attr_get_uint32 },
3609 };
3610 #undef _OUT
3611 SNL_DECLARE_ATTR_PARSER(table_parser, ap_table);
3612 #define _OUT(_field) offsetof(struct pfr_tstats, _field)
3613 static struct snl_attr_parser ap_tstats[] = {
3614 { .type = PF_TS_TABLE, .off = _OUT(pfrts_t), .arg = &table_parser, .cb = snl_attr_get_nested },
3615 { .type = PF_TS_PACKETS, .off = _OUT(pfrts_packets), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array},
3616 { .type = PF_TS_BYTES, .off = _OUT(pfrts_bytes), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array },
3617 { .type = PF_TS_MATCH, .off = _OUT(pfrts_match), .cb = snl_attr_get_uint64 },
3618 {. type = PF_TS_NOMATCH, .off = _OUT(pfrts_nomatch), .cb = snl_attr_get_uint64 },
3619 { .type = PF_TS_TZERO, .off = _OUT(pfrts_tzero), .cb = snl_attr_get_uint64 },
3620 { .type = PF_TS_CNT, .off = _OUT(pfrts_cnt), .cb = snl_attr_get_uint64 },
3621 { .type = PF_TS_REFCNT, .off = _OUT(pfrts_refcnt), . arg = (void *)PFR_REFCNT_MAX, .cb = snl_attr_get_uint64_into_int_array },
3622 };
3623 #undef _OUT
3624 SNL_DECLARE_PARSER(tstats_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats);
3625
3626 int
pfctl_get_tstats(struct pfctl_handle * h,const struct pfr_table * filter,pfctl_get_tstats_fn fn,void * arg)3627 pfctl_get_tstats(struct pfctl_handle *h, const struct pfr_table *filter,
3628 pfctl_get_tstats_fn fn, void *arg)
3629 {
3630 struct snl_writer nw;
3631 struct snl_errmsg_data e = {};
3632 struct nlmsghdr *hdr;
3633 uint32_t seq_id;
3634 int family_id;
3635 int ret;
3636
3637 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3638 if (family_id == 0)
3639 return (ENOTSUP);
3640
3641 snl_init_writer(&h->ss, &nw);
3642 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TSTATS);
3643
3644 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor);
3645 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name);
3646 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags);
3647
3648 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3649 return (ENXIO);
3650
3651 seq_id = hdr->nlmsg_seq;
3652
3653 if (!snl_send_message(&h->ss, hdr))
3654 return (ENXIO);
3655
3656 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3657 struct pfr_tstats tstats = {};
3658
3659 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_parser, &tstats))
3660 continue;
3661
3662 ret = fn(&tstats, arg);
3663 if (ret != 0)
3664 break;
3665 }
3666
3667 return (e.error);
3668 }
3669
3670 static struct snl_attr_parser ap_tstats_clr[] = {
3671 { .type = PF_TS_NZERO, .off = 0, .cb = snl_attr_get_uint64 },
3672 };
3673 SNL_DECLARE_PARSER(tstats_clr_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats_clr);
3674
3675 int
pfctl_clear_tstats(struct pfctl_handle * h,const struct pfr_table * filter,int * nzero,int flags)3676 pfctl_clear_tstats(struct pfctl_handle *h, const struct pfr_table *filter,
3677 int *nzero, int flags)
3678 {
3679 struct snl_writer nw;
3680 struct snl_errmsg_data e = {};
3681 struct nlmsghdr *hdr;
3682 uint64_t zero;
3683 uint32_t seq_id;
3684 int family_id;
3685
3686 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3687 if (family_id == 0)
3688 return (ENOTSUP);
3689
3690 snl_init_writer(&h->ss, &nw);
3691 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_TSTATS);
3692
3693 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor);
3694 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name);
3695 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags);
3696 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3697
3698 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3699 return (ENXIO);
3700
3701 seq_id = hdr->nlmsg_seq;
3702
3703 if (!snl_send_message(&h->ss, hdr))
3704 return (ENXIO);
3705
3706 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3707 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_clr_parser, &zero))
3708 continue;
3709 if (nzero)
3710 *nzero = (uint32_t)zero;
3711 }
3712
3713 return (e.error);
3714 }
3715
3716 static struct snl_attr_parser ap_clr_addrs[] = {
3717 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint64 },
3718 };
3719 SNL_DECLARE_PARSER(clr_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_clr_addrs);
3720
3721 int
pfctl_clear_addrs(struct pfctl_handle * h,const struct pfr_table * filter,int * ndel,int flags)3722 pfctl_clear_addrs(struct pfctl_handle *h, const struct pfr_table *filter,
3723 int *ndel, int flags)
3724 {
3725 struct snl_writer nw;
3726 struct snl_errmsg_data e = {};
3727 struct nlmsghdr *hdr;
3728 uint64_t del;
3729 uint32_t seq_id;
3730 int family_id;
3731
3732 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3733 if (family_id == 0)
3734 return (ENOTSUP);
3735
3736 snl_init_writer(&h->ss, &nw);
3737 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_ADDRS);
3738
3739 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor);
3740 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name);
3741 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags);
3742 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3743
3744 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3745 return (ENXIO);
3746
3747 seq_id = hdr->nlmsg_seq;
3748
3749 if (!snl_send_message(&h->ss, hdr))
3750 return (ENXIO);
3751
3752 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3753 if (!snl_parse_nlmsg(&h->ss, hdr, &clr_addrs_parser, &del))
3754 continue;
3755 if (ndel)
3756 *ndel = (uint32_t)del;
3757 }
3758
3759 return (e.error);
3760 }
3761
3762 struct nl_astats {
3763 struct pfr_astats *a;
3764 size_t max;
3765 size_t count;
3766 uint32_t total_count;
3767 uint32_t zeroed;
3768 };
3769
3770 #define _OUT(_field) offsetof(struct pfr_astats, _field)
3771 static const struct snl_attr_parser ap_pfr_astats[] = {
3772 { .type = PF_AS_ADDR , .off = _OUT(pfras_a), .arg = &pfr_addr_parser, .cb = snl_attr_get_nested },
3773 { .type = PF_AS_PACKETS, .off = _OUT(pfras_packets), .arg = (void *)(PFR_DIR_MAX * PFR_OP_ADDR_MAX), .cb = snl_attr_get_uint64_array },
3774 { .type = PF_AS_BYTES, .off = _OUT(pfras_bytes), .arg = (void *)(PFR_DIR_MAX * PFR_OP_ADDR_MAX), .cb = snl_attr_get_uint64_array },
3775 { .type = PF_AS_TZERO, .off = _OUT(pfras_tzero), .cb = snl_attr_get_time_t },
3776 };
3777 #undef _OUT
3778 SNL_DECLARE_ATTR_PARSER(pfr_astats_parser, ap_pfr_astats);
3779
3780 static bool
snl_attr_get_pfr_astats(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)3781 snl_attr_get_pfr_astats(struct snl_state *ss, struct nlattr *nla,
3782 const void *arg __unused, void *target)
3783 {
3784 struct nl_astats *a = (struct nl_astats *)target;
3785 bool ret;
3786
3787 if (a->count >= a->max)
3788 return (false);
3789
3790 ret = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla),
3791 &pfr_astats_parser, &a->a[a->count]);
3792 if (ret)
3793 a->count++;
3794
3795 return (ret);
3796 }
3797
3798 #define _OUT(_field) offsetof(struct nl_astats, _field)
3799 static struct snl_attr_parser ap_table_get_astats[] = {
3800 { .type = PF_TAS_ASTATS, .off = 0, .cb = snl_attr_get_pfr_astats },
3801 { .type = PF_TAS_ASTATS_COUNT, .off = _OUT(total_count), .cb = snl_attr_get_uint32 },
3802 { .type = PF_TAS_ASTATS_ZEROED, .off = _OUT(zeroed), .cb = snl_attr_get_uint32 },
3803 };
3804 #undef _OUT
3805 SNL_DECLARE_PARSER(table_astats_parser, struct genlmsghdr, snl_f_p_empty, ap_table_get_astats);
3806
3807 int
pfctl_get_astats(struct pfctl_handle * h,const struct pfr_table * tbl,struct pfr_astats * as,int * size,int flags)3808 pfctl_get_astats(struct pfctl_handle *h, const struct pfr_table *tbl,
3809 struct pfr_astats *as, int *size, int flags)
3810 {
3811 struct snl_writer nw;
3812 struct snl_errmsg_data e = {};
3813 struct nlmsghdr *hdr;
3814 struct nl_astats out = { 0 };
3815 uint32_t seq_id;
3816 int family_id;
3817
3818 if (tbl == NULL || size == NULL || *size < 0 ||
3819 (*size && as == NULL)) {
3820 errno = EINVAL;
3821 return (-1);
3822 }
3823
3824 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3825 if (family_id == 0)
3826 return (ENOTSUP);
3827
3828 snl_init_writer(&h->ss, &nw);
3829
3830 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_GET_ASTATS);
3831
3832 snl_add_msg_attr_table(&nw, PF_TAS_TABLE, tbl);
3833 snl_add_msg_attr_u32(&nw, PF_TAS_FLAGS, flags);
3834
3835 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3836 return (ENXIO);
3837 seq_id = hdr->nlmsg_seq;
3838
3839 if (! snl_send_message(&h->ss, hdr))
3840 return (ENXIO);
3841
3842 out.a = as;
3843 out.max = *size;
3844
3845 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3846 if (! snl_parse_nlmsg(&h->ss, hdr, &table_astats_parser, &out))
3847 continue;
3848 }
3849
3850 *size = out.total_count;
3851
3852 return (0);
3853 }
3854
3855 static int
_pfctl_clr_astats(struct pfctl_handle * h,const struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * nzero,int flags)3856 _pfctl_clr_astats(struct pfctl_handle *h, const struct pfr_table *tbl,
3857 struct pfr_addr *addrs, int size, int *nzero, int flags)
3858 {
3859 struct snl_writer nw;
3860 struct snl_errmsg_data e = {};
3861 struct nlmsghdr *hdr;
3862 uint32_t seq_id;
3863 struct nl_astats attrs;
3864 int family_id;
3865
3866 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3867 if (family_id == 0)
3868 return (ENOTSUP);
3869
3870 snl_init_writer(&h->ss, &nw);
3871 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_CLEAR_ASTATS);
3872
3873 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
3874 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
3875 for (int i = 0; i < size; i++)
3876 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]);
3877
3878 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3879 return (ENXIO);
3880 seq_id = hdr->nlmsg_seq;
3881
3882 if (! snl_send_message(&h->ss, hdr))
3883 return (ENXIO);
3884
3885 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3886 if (! snl_parse_nlmsg(&h->ss, hdr, &table_astats_parser, &attrs))
3887 continue;
3888 }
3889
3890 if (nzero)
3891 *nzero = attrs.zeroed;
3892
3893 return (e.error);
3894 }
3895
3896 int
pfctl_clr_astats(struct pfctl_handle * h,const struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * nzero,int flags)3897 pfctl_clr_astats(struct pfctl_handle *h, const struct pfr_table *tbl,
3898 struct pfr_addr *addrs, int size, int *nzero, int flags)
3899 {
3900 int ret;
3901 int off = 0;
3902 int partial_zeroed;
3903 int chunk_size;
3904
3905 do {
3906 chunk_size = MIN(size - off, 256);
3907 ret = _pfctl_clr_astats(h, tbl, &addrs[off], chunk_size,
3908 &partial_zeroed, flags);
3909 if (ret != 0)
3910 break;
3911 if (nzero)
3912 *nzero += partial_zeroed;
3913 off += chunk_size;
3914 } while (off < size);
3915
3916 return (ret);
3917 }
3918
3919 static int
_pfctl_test_addrs(struct pfctl_handle * h,const struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * nmatch,int flags)3920 _pfctl_test_addrs(struct pfctl_handle *h, const struct pfr_table *tbl,
3921 struct pfr_addr *addrs, int size, int *nmatch, int flags)
3922 {
3923 struct snl_writer nw;
3924 struct snl_errmsg_data e = {};
3925 struct nlmsghdr *hdr;
3926 uint32_t seq_id;
3927 struct nl_astats attrs;
3928 int family_id;
3929
3930 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3931 if (family_id == 0)
3932 return (ENOTSUP);
3933
3934 snl_init_writer(&h->ss, &nw);
3935 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_TEST_ADDRS);
3936
3937 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
3938 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
3939 for (int i = 0; i < size; i++)
3940 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]);
3941
3942 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3943 return (ENXIO);
3944 seq_id = hdr->nlmsg_seq;
3945
3946 if (! snl_send_message(&h->ss, hdr))
3947 return (ENXIO);
3948
3949 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3950 if (! snl_parse_nlmsg(&h->ss, hdr, &table_astats_parser, &attrs))
3951 continue;
3952 }
3953
3954 if (nmatch)
3955 *nmatch = attrs.total_count;
3956
3957 return (e.error);
3958 }
3959
3960 int
pfctl_test_addrs(struct pfctl_handle * h,const struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * nmatch,int flags)3961 pfctl_test_addrs(struct pfctl_handle *h, const struct pfr_table *tbl,
3962 struct pfr_addr *addrs, int size, int *nmatch, int flags)
3963 {
3964 int ret;
3965 int off = 0;
3966 int partial_match;
3967 int chunk_size;
3968
3969 if (nmatch)
3970 *nmatch = 0;
3971
3972 do {
3973 chunk_size = MIN(size - off, 256);
3974 ret = _pfctl_test_addrs(h, tbl, &addrs[off], chunk_size,
3975 &partial_match, flags);
3976 if (ret != 0)
3977 break;
3978 if (nmatch)
3979 *nmatch += partial_match;
3980 off += chunk_size;
3981 } while (off < size);
3982
3983 return (ret);
3984 }
3985
3986 static void
snl_add_msg_attr_limit_rate(struct snl_writer * nw,uint32_t type,const struct pfctl_limit_rate * rate)3987 snl_add_msg_attr_limit_rate(struct snl_writer *nw, uint32_t type,
3988 const struct pfctl_limit_rate *rate)
3989 {
3990 int off;
3991
3992 off = snl_add_msg_attr_nested(nw, type);
3993
3994 snl_add_msg_attr_u32(nw, PF_LR_LIMIT, rate->limit);
3995 snl_add_msg_attr_u32(nw, PF_LR_SECONDS, rate->seconds);
3996
3997 snl_end_attr_nested(nw, off);
3998 }
3999
4000 #define _OUT(_field) offsetof(struct pfctl_limit_rate, _field)
4001 static const struct snl_attr_parser ap_limit_rate[] = {
4002 { .type = PF_LR_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
4003 { .type = PF_LR_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
4004 };
4005 SNL_DECLARE_ATTR_PARSER(limit_rate_parser, ap_limit_rate);
4006 #undef _OUT
4007
4008 #define _OUT(_field) offsetof(struct pfctl_state_lim, _field)
4009 static struct snl_attr_parser ap_statelim[] = {
4010 { .type = PF_SL_NAME, .off = _OUT(name), .arg_u32 = PF_STATELIM_NAME_LEN, .cb = snl_attr_copy_string },
4011 { .type = PF_SL_ID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
4012 { .type = PF_SL_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
4013 { .type = PF_SL_RATE, .off = _OUT(rate), .arg = &limit_rate_parser, .cb = snl_attr_get_nested },
4014 { .type = PF_SL_DESCR, .off = _OUT(description), .arg_u32 = PF_STATELIM_DESCR_LEN, .cb = snl_attr_copy_string },
4015 { .type = PF_SL_INUSE, .off = _OUT(inuse), .cb = snl_attr_get_uint32 },
4016 { .type = PF_SL_ADMITTED, .off = _OUT(admitted), .cb = snl_attr_get_uint64 },
4017 { .type = PF_SL_HARDLIMITED, .off = _OUT(hardlimited), .cb = snl_attr_get_uint64 },
4018 { .type = PF_SL_RATELIMITED, .off = _OUT(ratelimited), .cb = snl_attr_get_uint64 },
4019 };
4020 #undef _OUT
4021 SNL_DECLARE_PARSER(statelim_parser, struct genlmsghdr, snl_f_p_empty, ap_statelim);
4022
4023 int
pfctl_state_limiter_nget(struct pfctl_handle * h,struct pfctl_state_lim * lim)4024 pfctl_state_limiter_nget(struct pfctl_handle *h, struct pfctl_state_lim *lim)
4025 {
4026 struct snl_writer nw;
4027 struct snl_errmsg_data e = {};
4028 struct nlmsghdr *hdr;
4029 uint32_t seq_id;
4030 int family_id;
4031
4032 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4033 if (family_id == 0)
4034 return (ENOTSUP);
4035
4036 snl_init_writer(&h->ss, &nw);
4037 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_STATE_LIMITER_NGET);
4038
4039 snl_add_msg_attr_u32(&nw, PF_SL_ID, lim->id);
4040
4041 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4042 return (ENXIO);
4043 seq_id = hdr->nlmsg_seq;
4044
4045 if (! snl_send_message(&h->ss, hdr))
4046 return (ENXIO);
4047
4048 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4049 if (! snl_parse_nlmsg(&h->ss, hdr, &statelim_parser, lim))
4050 continue;
4051 }
4052
4053 return (e.error);
4054 }
4055
4056 int
pfctl_state_limiter_add(struct pfctl_handle * h,struct pfctl_state_lim * lim)4057 pfctl_state_limiter_add(struct pfctl_handle *h, struct pfctl_state_lim *lim)
4058 {
4059 struct snl_writer nw;
4060 struct snl_errmsg_data e = {};
4061 struct nlmsghdr *hdr;
4062 uint32_t seq_id;
4063 int family_id;
4064
4065 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4066 if (family_id == 0)
4067 return (ENOTSUP);
4068
4069 snl_init_writer(&h->ss, &nw);
4070 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_STATE_LIMITER_ADD);
4071
4072 snl_add_msg_attr_u32(&nw, PF_SL_ID, lim->id);
4073 snl_add_msg_attr_u32(&nw, PF_SL_TICKET, lim->ticket);
4074 snl_add_msg_attr_string(&nw, PF_SL_NAME, lim->name);
4075 snl_add_msg_attr_u32(&nw, PF_SL_LIMIT, lim->limit);
4076 snl_add_msg_attr_limit_rate(&nw, PF_SL_RATE, &lim->rate);
4077 snl_add_msg_attr_string(&nw, PF_SL_DESCR, lim->description);
4078
4079 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4080 return (ENXIO);
4081 seq_id = hdr->nlmsg_seq;
4082
4083 if (! snl_send_message(&h->ss, hdr))
4084 return (ENXIO);
4085
4086 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4087 if (! snl_parse_nlmsg(&h->ss, hdr, &statelim_parser, &lim))
4088 continue;
4089 }
4090
4091 return (e.error);
4092 }
4093
4094 #define _OUT(_field) offsetof(struct pfctl_source_lim, _field)
4095 static struct snl_attr_parser ap_sourcelim[] = {
4096 { .type = PF_SCL_NAME, .off = _OUT(name), .arg_u32 = PF_SOURCELIM_NAME_LEN, .cb = snl_attr_copy_string },
4097 { .type = PF_SCL_ID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
4098 { .type = PF_SCL_ENTRIES, .off = _OUT(entries), .cb = snl_attr_get_uint32 },
4099 { .type = PF_SCL_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
4100 { .type = PF_SCL_RATE, .off = _OUT(rate), .arg = &limit_rate_parser, .cb = snl_attr_get_nested },
4101 { .type = PF_SCL_OVERLOAD_TBL_NAME, .off = _OUT(overload_tblname), .arg_u32 = PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
4102 { .type = PF_SCL_OVERLOAD_HIGH_WM, .off = _OUT(overload_hwm), .cb = snl_attr_get_uint32 },
4103 { .type = PF_SCL_OVERLOAD_LOW_WM, .off = _OUT(overload_lwm), .cb = snl_attr_get_uint32 },
4104 { .type = PF_SCL_INET_PREFIX, .off = _OUT(inet_prefix), .cb = snl_attr_get_uint32 },
4105 { .type = PF_SCL_INET6_PREFIX, .off = _OUT(inet6_prefix), .cb = snl_attr_get_uint32 },
4106 { .type = PF_SCL_DESCR, .off = _OUT(description), .arg_u32 = PF_SOURCELIM_DESCR_LEN, .cb = snl_attr_copy_string },
4107 { .type = PF_SCL_NENTRIES, .off = _OUT(nentries), .cb = snl_attr_get_uint32 },
4108 { .type = PF_SCL_INUSE, .off = _OUT(inuse), .cb = snl_attr_get_uint32 },
4109 { .type = PF_SCL_ADDR_ALLOCS, .off = _OUT(addrallocs), .cb = snl_attr_get_uint64 },
4110 { .type = PF_SCL_ADDR_NOMEM, .off = _OUT(addrnomem), .cb = snl_attr_get_uint64 },
4111 { .type = PF_SCL_ADMITTED, .off = _OUT(admitted), .cb = snl_attr_get_uint64 },
4112 { .type = PF_SCL_ADDRLIMITED, .off = _OUT(addrlimited), .cb = snl_attr_get_uint64 },
4113 { .type = PF_SCL_HARDLIMITED, .off = _OUT(hardlimited), .cb = snl_attr_get_uint64 },
4114 { .type = PF_SCL_RATELIMITED, .off = _OUT(ratelimited), .cb = snl_attr_get_uint64 },
4115 };
4116 #undef _OUT
4117 SNL_DECLARE_PARSER(sourcelim_parser, struct genlmsghdr, snl_f_p_empty, ap_sourcelim);
4118
4119 int
pfctl_source_limiter_add(struct pfctl_handle * h,struct pfctl_source_lim * lim)4120 pfctl_source_limiter_add(struct pfctl_handle *h, struct pfctl_source_lim *lim)
4121 {
4122 struct snl_writer nw;
4123 struct snl_errmsg_data e = {};
4124 struct nlmsghdr *hdr;
4125 uint32_t seq_id;
4126 int family_id;
4127
4128 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4129 if (family_id == 0)
4130 return (ENOTSUP);
4131
4132 snl_init_writer(&h->ss, &nw);
4133 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SOURCE_LIMITER_ADD);
4134
4135 snl_add_msg_attr_u32(&nw, PF_SCL_TICKET, lim->ticket);
4136 snl_add_msg_attr_string(&nw, PF_SCL_NAME, lim->name);
4137 snl_add_msg_attr_u32(&nw, PF_SCL_ID, lim->id);
4138 snl_add_msg_attr_u32(&nw, PF_SCL_ENTRIES, lim->entries);
4139 snl_add_msg_attr_u32(&nw, PF_SCL_LIMIT, lim->limit);
4140 snl_add_msg_attr_limit_rate(&nw, PF_SCL_RATE, &lim->rate);
4141 snl_add_msg_attr_string(&nw, PF_SCL_OVERLOAD_TBL_NAME, lim->overload_tblname);
4142 snl_add_msg_attr_u32(&nw, PF_SCL_OVERLOAD_HIGH_WM, lim->overload_hwm);
4143 snl_add_msg_attr_u32(&nw, PF_SCL_OVERLOAD_LOW_WM, lim->overload_lwm);
4144 snl_add_msg_attr_u32(&nw, PF_SCL_INET_PREFIX, lim->inet_prefix);
4145 snl_add_msg_attr_u32(&nw, PF_SCL_INET6_PREFIX, lim->inet6_prefix);
4146 snl_add_msg_attr_string(&nw, PF_SCL_DESCR, lim->description);
4147
4148 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4149 return (ENXIO);
4150 seq_id = hdr->nlmsg_seq;
4151
4152 if (! snl_send_message(&h->ss, hdr))
4153 return (ENXIO);
4154
4155 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4156 if (! snl_parse_nlmsg(&h->ss, hdr, &sourcelim_parser, &lim))
4157 continue;
4158 }
4159
4160 return (e.error);
4161 }
4162
4163 static int
_pfctl_source_limiter_get(struct pfctl_handle * h,int cmd,struct pfctl_source_lim * lim)4164 _pfctl_source_limiter_get(struct pfctl_handle *h, int cmd, struct pfctl_source_lim *lim)
4165 {
4166 struct snl_writer nw;
4167 struct snl_errmsg_data e = {};
4168 struct nlmsghdr *hdr;
4169 uint32_t seq_id;
4170 int family_id;
4171
4172 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4173 if (family_id == 0)
4174 return (ENOTSUP);
4175
4176 snl_init_writer(&h->ss, &nw);
4177 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
4178
4179 snl_add_msg_attr_u32(&nw, PF_SCL_ID, lim->id);
4180
4181 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4182 return (ENXIO);
4183 seq_id = hdr->nlmsg_seq;
4184
4185 if (! snl_send_message(&h->ss, hdr))
4186 return (ENXIO);
4187
4188 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4189 if (! snl_parse_nlmsg(&h->ss, hdr, &sourcelim_parser, lim))
4190 continue;
4191 }
4192
4193 return (e.error);
4194 }
4195
4196 int
pfctl_source_limiter_get(struct pfctl_handle * h,struct pfctl_source_lim * lim)4197 pfctl_source_limiter_get(struct pfctl_handle *h, struct pfctl_source_lim *lim)
4198 {
4199 return (_pfctl_source_limiter_get(h, PFNL_CMD_SOURCE_LIMITER_GET, lim));
4200 }
4201
4202 int
pfctl_source_limiter_nget(struct pfctl_handle * h,struct pfctl_source_lim * lim)4203 pfctl_source_limiter_nget(struct pfctl_handle *h, struct pfctl_source_lim *lim)
4204 {
4205 return (_pfctl_source_limiter_get(h, PFNL_CMD_SOURCE_LIMITER_NGET, lim));
4206 }
4207
4208 #define _OUT(_field) offsetof(struct pfctl_source, _field)
4209 static struct snl_attr_parser ap_source[] = {
4210 { .type = PF_SRC_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
4211 { .type = PF_SRC_RDOMAIN, .off = _OUT(rdomain), .cb = snl_attr_get_uint32 },
4212 { .type = PF_SRC_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr },
4213 { .type = PF_SRC_INUSE, .off = _OUT(inuse), .cb = snl_attr_get_uint32 },
4214 { .type = PF_SRC_ADMITTED, .off = _OUT(admitted), .cb = snl_attr_get_uint64 },
4215 { .type = PF_SRC_HARDLIMITED, .off = _OUT(hardlimited), .cb = snl_attr_get_uint64 },
4216 { .type = PF_SRC_RATELIMITED, .off = _OUT(ratelimited), .cb = snl_attr_get_uint64 },
4217 { .type = PF_SRC_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
4218 { .type = PF_SRC_INET_PREFIX, .off = _OUT(inet_prefix), .cb = snl_attr_get_uint32 },
4219 {. type = PF_SRC_INET6_PREFIX, .off = _OUT(inet6_prefix), .cb = snl_attr_get_uint32 },
4220 };
4221 #undef _OUT
4222 SNL_DECLARE_PARSER(source_parser, struct genlmsghdr, snl_f_p_empty, ap_source);
4223
4224 int
pfctl_source_get(struct pfctl_handle * h,int id,pfctl_get_source_fn fn,void * arg)4225 pfctl_source_get(struct pfctl_handle *h, int id, pfctl_get_source_fn fn, void *arg)
4226 {
4227 struct snl_writer nw;
4228 struct snl_errmsg_data e = {};
4229 struct nlmsghdr *hdr;
4230 uint32_t seq_id;
4231 int family_id, error;
4232
4233 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4234 if (family_id == 0)
4235 return (ENOTSUP);
4236
4237 snl_init_writer(&h->ss, &nw);
4238 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SOURCE_NGET);
4239
4240 snl_add_msg_attr_u32(&nw, PF_SRC_ID, id);
4241
4242 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4243 return (ENXIO);
4244 seq_id = hdr->nlmsg_seq;
4245
4246 if (! snl_send_message(&h->ss, hdr))
4247 return (ENXIO);
4248
4249 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4250 struct pfctl_source src;
4251
4252 if (! snl_parse_nlmsg(&h->ss, hdr, &source_parser, &src))
4253 continue;
4254
4255 error = fn(&src, arg);
4256 if (error != 0) {
4257 e.error = error;
4258 break;
4259 }
4260 }
4261
4262 return (e.error);
4263 }
4264
4265 int
pfctl_source_clear(struct pfctl_handle * h,struct pfctl_source_clear * kill)4266 pfctl_source_clear(struct pfctl_handle *h, struct pfctl_source_clear *kill)
4267 {
4268 struct snl_writer nw;
4269 struct snl_errmsg_data e = {};
4270 struct nlmsghdr *hdr;
4271 uint32_t seq_id;
4272 int family_id;
4273
4274 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4275 if (family_id == 0)
4276 return (ENOTSUP);
4277
4278 snl_init_writer(&h->ss, &nw);
4279 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SOURCE_CLEAR);
4280
4281 snl_add_msg_attr_string(&nw, PF_SC_NAME, kill->name);
4282 snl_add_msg_attr_u32(&nw, PF_SC_ID, kill->id);
4283 snl_add_msg_attr_u32(&nw, PF_SC_RDOMAIN, kill->rdomain);
4284 snl_add_msg_attr_u8(&nw, PF_SC_AF, kill->af);
4285 snl_add_msg_attr_ip6(&nw, PF_SC_ADDR, &kill->addr.v6);
4286
4287 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4288 return (ENXIO);
4289 seq_id = hdr->nlmsg_seq;
4290
4291 if (! snl_send_message(&h->ss, hdr))
4292 return (ENXIO);
4293
4294 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4295 }
4296
4297 return (e.error);
4298 }
4299
4300 static const struct snl_hdr_parser *all_parsers[] = {
4301 &begin_addrs_parser,
4302 &clear_states_parser,
4303 &clr_addrs_parser,
4304 &creator_parser,
4305 &get_addr_parser,
4306 &get_addrs_parser,
4307 &get_limit_parser,
4308 &get_timeout_parser,
4309 &getrule_parser,
4310 &getrules_parser,
4311 &getstatus_parser,
4312 &nadd_parser,
4313 &natlook_parser,
4314 &ndel_parser,
4315 &ruleset_parser,
4316 &skey_parser,
4317 &source_parser,
4318 &sourcelim_parser,
4319 &speer_parser,
4320 &srcnode_parser,
4321 &state_parser,
4322 &statelim_parser,
4323 &table_add_addr_parser,
4324 &table_astats_parser,
4325 &table_del_addr_parser,
4326 &table_get_addr_parser,
4327 &table_set_addr_parser,
4328 &tstats_clr_parser,
4329 &tstats_parser,
4330 };
4331
4332 static void
_pfctl_verify_parsers(void)4333 _pfctl_verify_parsers(void)
4334 {
4335 SNL_VERIFY_PARSERS(all_parsers);
4336 }
4337