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 SNL_DECLARE_ATTR_PARSER(rule_parser, ap_getrule);
1933
1934 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1935 #define _OUT(_field) offsetof(struct pfctl_state, _field)
1936 static struct snl_attr_parser ap_state[] = {
1937 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 },
1938 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 },
1939 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname },
1940 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname },
1941 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1942 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1943 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested },
1944 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested },
1945 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr },
1946 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
1947 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 },
1948 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 },
1949 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 },
1950 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 },
1951 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
1952 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
1953 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
1954 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
1955 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 },
1956 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 },
1957 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 },
1958 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 },
1959 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 },
1960 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 },
1961 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 },
1962 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 },
1963 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 },
1964 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 },
1965 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname },
1966 { .type = PF_ST_SRC_NODE_FLAGS, .off = _OUT(src_node_flags), .cb = snl_attr_get_uint8 },
1967 { .type = PF_ST_RT_AF, .off = _OUT(rt_af), .cb = snl_attr_get_uint8 },
1968 { .type = PF_ST_CREATED_BY_RULE, .off = _OUT(created_by_rule), .arg = &rule_parser, .cb = snl_attr_get_nested },
1969 };
1970 #undef _IN
1971 #undef _OUT
1972 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, snl_f_p_empty, ap_state);
1973
1974 int
pfctl_get_states_h(struct pfctl_handle * h,struct pfctl_state_filter * filter,pfctl_get_state_fn f,void * arg)1975 pfctl_get_states_h(struct pfctl_handle *h, struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
1976 {
1977 int family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1978 int ret;
1979
1980 struct nlmsghdr *hdr;
1981 struct snl_writer nw;
1982
1983 if (family_id == 0)
1984 return (ENOTSUP);
1985
1986 snl_init_writer(&h->ss, &nw);
1987 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES);
1988 hdr->nlmsg_flags |= NLM_F_DUMP;
1989 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname);
1990 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto);
1991 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af);
1992 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6);
1993 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6);
1994 snl_add_msg_attr_bool(&nw, PF_ST_INCLUDE_RULE, filter->include_rule);
1995
1996 hdr = snl_finalize_msg(&nw);
1997 if (hdr == NULL)
1998 return (ENOMEM);
1999
2000 uint32_t seq_id = hdr->nlmsg_seq;
2001
2002 snl_send_message(&h->ss, hdr);
2003
2004 struct snl_errmsg_data e = {};
2005 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2006 struct pfctl_state s;
2007 bzero(&s, sizeof(s));
2008 if (!snl_parse_nlmsg(&h->ss, hdr, &state_parser, &s))
2009 continue;
2010
2011 ret = f(&s, arg);
2012 if (ret != 0)
2013 return (ret);
2014 }
2015
2016 return (e.error);
2017 }
2018
2019 int
pfctl_get_states_iter(pfctl_get_state_fn f,void * arg)2020 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg)
2021 {
2022 struct pfctl_state_filter filter = {};
2023 return (pfctl_get_filtered_states_iter(&filter, f, arg));
2024 }
2025
2026 int
pfctl_get_filtered_states_iter(struct pfctl_state_filter * filter,pfctl_get_state_fn f,void * arg)2027 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
2028 {
2029 struct pfctl_handle h = {};
2030 int error;
2031
2032 snl_init(&h.ss, NETLINK_GENERIC);
2033 error = pfctl_get_states_h(&h, filter, f, arg);
2034 snl_free(&h.ss);
2035
2036 return (error);
2037 }
2038
2039 static int
pfctl_append_states(struct pfctl_state * s,void * arg)2040 pfctl_append_states(struct pfctl_state *s, void *arg)
2041 {
2042 struct pfctl_state *new;
2043 struct pfctl_states *states = (struct pfctl_states *)arg;
2044
2045 new = malloc(sizeof(*s));
2046 if (new == NULL)
2047 return (ENOMEM);
2048
2049 memcpy(new, s, sizeof(*s));
2050
2051 TAILQ_INSERT_TAIL(&states->states, new, entry);
2052
2053 return (0);
2054 }
2055
2056 int
pfctl_get_states(int dev __unused,struct pfctl_states * states)2057 pfctl_get_states(int dev __unused, struct pfctl_states *states)
2058 {
2059 int ret;
2060
2061 bzero(states, sizeof(*states));
2062 TAILQ_INIT(&states->states);
2063
2064 ret = pfctl_get_states_iter(pfctl_append_states, states);
2065 if (ret != 0) {
2066 pfctl_free_states(states);
2067 return (ret);
2068 }
2069
2070 return (0);
2071 }
2072
2073 void
pfctl_free_states(struct pfctl_states * states)2074 pfctl_free_states(struct pfctl_states *states)
2075 {
2076 struct pfctl_state *s, *tmp;
2077
2078 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) {
2079 free(s);
2080 }
2081
2082 bzero(states, sizeof(*states));
2083 }
2084
2085 struct pfctl_nl_clear_states {
2086 uint32_t killed;
2087 };
2088 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field)
2089 static struct snl_attr_parser ap_clear_states[] = {
2090 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 },
2091 };
2092 #undef _OUT
2093 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, snl_f_p_empty, ap_clear_states);
2094
2095 static int
_pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed,int cmd)2096 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2097 unsigned int *killed, int cmd)
2098 {
2099 struct snl_writer nw;
2100 struct snl_errmsg_data e = {};
2101 struct pfctl_nl_clear_states attrs = {};
2102 struct nlmsghdr *hdr;
2103 uint32_t seq_id;
2104 int family_id;
2105
2106 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2107 if (family_id == 0)
2108 return (ENOTSUP);
2109
2110 snl_init_writer(&h->ss, &nw);
2111 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
2112 hdr->nlmsg_flags |= NLM_F_DUMP;
2113
2114 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id);
2115 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid));
2116 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction);
2117 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af);
2118 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto);
2119 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src);
2120 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst);
2121 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr);
2122 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname);
2123 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label);
2124 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match);
2125 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat);
2126
2127 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2128 return (ENXIO);
2129
2130 seq_id = hdr->nlmsg_seq;
2131
2132 if (! snl_send_message(&h->ss, hdr))
2133 return (ENXIO);
2134
2135 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2136 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs))
2137 continue;
2138 }
2139
2140 if (killed)
2141 *killed = attrs.killed;
2142
2143 return (e.error);
2144 }
2145
2146 int
pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2147 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2148 unsigned int *killed)
2149 {
2150 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES));
2151 }
2152
2153 int
pfctl_kill_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2154 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2155 unsigned int *killed)
2156 {
2157 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES));
2158 }
2159
2160 static int
_pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed,uint64_t cmd)2161 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2162 unsigned int *killed, uint64_t cmd)
2163 {
2164 struct pfctl_handle *h;
2165 int ret;
2166
2167 h = pfctl_open(PF_DEVICE);
2168 if (h == NULL)
2169 return (ENODEV);
2170
2171 ret = _pfctl_clear_states_h(h, kill, killed, cmd);
2172 pfctl_close(h);
2173
2174 return (ret);
2175 }
2176
2177 int
pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2178 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2179 unsigned int *killed)
2180 {
2181 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES));
2182 }
2183
2184 int
pfctl_kill_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2185 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed)
2186 {
2187 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES));
2188 }
2189
2190 int
pfctl_clear_rules(int dev,const char * anchorname)2191 pfctl_clear_rules(int dev, const char *anchorname)
2192 {
2193 struct pfioc_trans trans;
2194 struct pfioc_trans_e transe[2];
2195 int ret;
2196
2197 bzero(&trans, sizeof(trans));
2198 bzero(&transe, sizeof(transe));
2199
2200 transe[0].rs_num = PF_RULESET_SCRUB;
2201 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2202 >= sizeof(transe[0].anchor))
2203 return (E2BIG);
2204
2205 transe[1].rs_num = PF_RULESET_FILTER;
2206 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2207 >= sizeof(transe[1].anchor))
2208 return (E2BIG);
2209
2210 trans.size = 2;
2211 trans.esize = sizeof(transe[0]);
2212 trans.array = transe;
2213
2214 ret = ioctl(dev, DIOCXBEGIN, &trans);
2215 if (ret != 0)
2216 return (errno);
2217 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2218 if (ret != 0)
2219 return (errno);
2220
2221 return (0);
2222 }
2223
2224 int
pfctl_clear_nat(int dev,const char * anchorname)2225 pfctl_clear_nat(int dev, const char *anchorname)
2226 {
2227 struct pfioc_trans trans;
2228 struct pfioc_trans_e transe[3];
2229 int ret;
2230
2231 bzero(&trans, sizeof(trans));
2232 bzero(&transe, sizeof(transe));
2233
2234 transe[0].rs_num = PF_RULESET_NAT;
2235 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2236 >= sizeof(transe[0].anchor))
2237 return (E2BIG);
2238
2239 transe[1].rs_num = PF_RULESET_BINAT;
2240 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2241 >= sizeof(transe[0].anchor))
2242 return (E2BIG);
2243
2244 transe[2].rs_num = PF_RULESET_RDR;
2245 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor))
2246 >= sizeof(transe[2].anchor))
2247 return (E2BIG);
2248
2249 trans.size = 3;
2250 trans.esize = sizeof(transe[0]);
2251 trans.array = transe;
2252
2253 ret = ioctl(dev, DIOCXBEGIN, &trans);
2254 if (ret != 0)
2255 return (errno);
2256 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2257 if (ret != 0)
2258 return (errno);
2259
2260 return (0);
2261 }
2262
2263 int
pfctl_clear_eth_rules(int dev,const char * anchorname)2264 pfctl_clear_eth_rules(int dev, const char *anchorname)
2265 {
2266 struct pfioc_trans trans;
2267 struct pfioc_trans_e transe;
2268 int ret;
2269
2270 bzero(&trans, sizeof(trans));
2271 bzero(&transe, sizeof(transe));
2272
2273 transe.rs_num = PF_RULESET_ETH;
2274 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor))
2275 >= sizeof(transe.anchor))
2276 return (E2BIG);
2277
2278 trans.size = 1;
2279 trans.esize = sizeof(transe);
2280 trans.array = &transe;
2281
2282 ret = ioctl(dev, DIOCXBEGIN, &trans);
2283 if (ret != 0)
2284 return (errno);
2285 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2286 if (ret != 0)
2287 return (errno);
2288
2289 return (0);
2290 }
2291
2292 static int
_pfctl_get_limit(int dev,const int index,uint * limit)2293 _pfctl_get_limit(int dev, const int index, uint *limit)
2294 {
2295 struct pfioc_limit pl;
2296
2297 bzero(&pl, sizeof(pl));
2298 pl.index = index;
2299
2300 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1)
2301 return (errno);
2302
2303 *limit = pl.limit;
2304
2305 return (0);
2306 }
2307
2308 int
pfctl_set_syncookies(int dev,const struct pfctl_syncookies * s)2309 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s)
2310 {
2311 struct pfioc_nv nv;
2312 nvlist_t *nvl;
2313 int ret;
2314 uint state_limit;
2315 uint64_t lim, hi, lo;
2316
2317 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2318 if (ret != 0)
2319 return (ret);
2320
2321 if (state_limit == 0)
2322 state_limit = INT_MAX;
2323
2324 lim = state_limit;
2325 hi = lim * s->highwater / 100;
2326 lo = lim * s->lowwater / 100;
2327
2328 if (lo == hi)
2329 hi++;
2330
2331 nvl = nvlist_create(0);
2332
2333 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER);
2334 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE);
2335 nvlist_add_number(nvl, "highwater", hi);
2336 nvlist_add_number(nvl, "lowwater", lo);
2337
2338 nv.data = nvlist_pack(nvl, &nv.len);
2339 nv.size = nv.len;
2340 nvlist_destroy(nvl);
2341 nvl = NULL;
2342
2343 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv);
2344
2345 free(nv.data);
2346 if (ret != 0)
2347 return (errno);
2348
2349 return (0);
2350 }
2351
2352 int
pfctl_get_syncookies(int dev,struct pfctl_syncookies * s)2353 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s)
2354 {
2355 nvlist_t *nvl;
2356 int ret;
2357 uint state_limit;
2358 bool enabled, adaptive;
2359
2360 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2361 if (ret != 0)
2362 return (ret);
2363
2364 if (state_limit == 0)
2365 state_limit = INT_MAX;
2366
2367 bzero(s, sizeof(*s));
2368
2369 nvl = nvlist_create(0);
2370
2371 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) {
2372 ret = errno;
2373 goto out;
2374 }
2375
2376 enabled = nvlist_get_bool(nvl, "enabled");
2377 adaptive = nvlist_get_bool(nvl, "adaptive");
2378
2379 if (enabled) {
2380 if (adaptive)
2381 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE;
2382 else
2383 s->mode = PFCTL_SYNCOOKIES_ALWAYS;
2384 } else {
2385 s->mode = PFCTL_SYNCOOKIES_NEVER;
2386 }
2387
2388 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit;
2389 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit;
2390 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states");
2391
2392 out:
2393 nvlist_destroy(nvl);
2394 return (ret);
2395 }
2396
2397 int
pfctl_table_add_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * nadd,int flags)2398 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2399 *addr, int size, int *nadd, int flags)
2400 {
2401 struct pfioc_table io;
2402
2403 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2404 return (EINVAL);
2405 }
2406 bzero(&io, sizeof io);
2407 io.pfrio_flags = flags;
2408 io.pfrio_table = *tbl;
2409 io.pfrio_buffer = addr;
2410 io.pfrio_esize = sizeof(*addr);
2411 io.pfrio_size = size;
2412
2413 if (ioctl(dev, DIOCRADDADDRS, &io))
2414 return (errno);
2415 if (nadd != NULL)
2416 *nadd = io.pfrio_nadd;
2417 return (0);
2418 }
2419
2420 static void
snl_add_msg_attr_table(struct snl_writer * nw,uint32_t type,const struct pfr_table * tbl)2421 snl_add_msg_attr_table(struct snl_writer *nw, uint32_t type,
2422 const struct pfr_table *tbl)
2423 {
2424 int off;
2425
2426 off = snl_add_msg_attr_nested(nw, type);
2427
2428 snl_add_msg_attr_string(nw, PF_T_ANCHOR, tbl->pfrt_anchor);
2429 snl_add_msg_attr_string(nw, PF_T_NAME, tbl->pfrt_name);
2430 snl_add_msg_attr_u32(nw, PF_T_TABLE_FLAGS, tbl->pfrt_flags);
2431
2432 snl_end_attr_nested(nw, off);
2433 }
2434
2435 static void
snl_add_msg_attr_pfr_addr(struct snl_writer * nw,uint32_t type,const struct pfr_addr * addr)2436 snl_add_msg_attr_pfr_addr(struct snl_writer *nw, uint32_t type,
2437 const struct pfr_addr *addr)
2438 {
2439 int off;
2440
2441 off = snl_add_msg_attr_nested(nw, type);
2442
2443 snl_add_msg_attr_u8(nw, PFR_A_AF, addr->pfra_af);
2444 snl_add_msg_attr_u8(nw, PFR_A_NET, addr->pfra_net);
2445 snl_add_msg_attr_bool(nw, PFR_A_NOT, addr->pfra_not);
2446 snl_add_msg_attr_ip6(nw, PFR_A_ADDR, &addr->pfra_ip6addr);
2447
2448 snl_end_attr_nested(nw, off);
2449 }
2450
2451 static struct snl_attr_parser ap_table_add_addr[] = {
2452 { .type = PF_TA_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 },
2453 };
2454 SNL_DECLARE_PARSER(table_add_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_add_addr);
2455
2456 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)2457 _pfctl_table_add_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr
2458 *addrs, int size, int *nadd, int flags)
2459 {
2460 struct snl_writer nw;
2461 struct snl_errmsg_data e = {};
2462 struct nlmsghdr *hdr;
2463 uint32_t seq_id;
2464 uint32_t added;
2465 int family_id;
2466
2467 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2468 if (family_id == 0)
2469 return (ENOTSUP);
2470
2471 snl_init_writer(&h->ss, &nw);
2472 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_ADD_ADDR);
2473
2474 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
2475 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
2476 for (int i = 0; i < size; i++)
2477 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]);
2478
2479 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2480 return (ENXIO);
2481 seq_id = hdr->nlmsg_seq;
2482
2483 if (! snl_send_message(&h->ss, hdr))
2484 return (ENXIO);
2485
2486 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2487 if (! snl_parse_nlmsg(&h->ss, hdr, &table_add_addr_parser, &added))
2488 continue;
2489 }
2490
2491 if (nadd)
2492 *nadd = added;
2493
2494 return (e.error);
2495 }
2496
2497 int
pfctl_table_add_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * nadd,int flags)2498 pfctl_table_add_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr
2499 *addr, int size, int *nadd, int flags)
2500 {
2501 int ret;
2502 int off = 0;
2503 int partial_added;
2504 int chunk_size;
2505
2506 do {
2507 chunk_size = MIN(size - off, 256);
2508 ret = _pfctl_table_add_addrs_h(h, tbl, &addr[off], chunk_size, &partial_added, flags);
2509 if (ret != 0)
2510 break;
2511 if (nadd)
2512 *nadd += partial_added;
2513 off += chunk_size;
2514 } while (off < size);
2515
2516 return (ret);
2517 }
2518
2519 static struct snl_attr_parser ap_table_del_addr[] = {
2520 { .type = PF_TA_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 },
2521 };
2522 SNL_DECLARE_PARSER(table_del_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_del_addr);
2523 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)2524 _pfctl_table_del_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr
2525 *addrs, int size, int *ndel, int flags)
2526 {
2527 struct snl_writer nw;
2528 struct snl_errmsg_data e = {};
2529 struct nlmsghdr *hdr;
2530 uint32_t seq_id;
2531 uint32_t deleted;
2532 int family_id;
2533
2534 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2535 if (family_id == 0)
2536 return (ENOTSUP);
2537
2538 snl_init_writer(&h->ss, &nw);
2539 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_DEL_ADDR);
2540
2541 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
2542 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
2543 for (int i = 0; i < size; i++)
2544 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]);
2545
2546 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2547 return (ENXIO);
2548 seq_id = hdr->nlmsg_seq;
2549
2550 if (! snl_send_message(&h->ss, hdr))
2551 return (ENXIO);
2552
2553 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2554 if (! snl_parse_nlmsg(&h->ss, hdr, &table_del_addr_parser, &deleted))
2555 continue;
2556 }
2557
2558 if (ndel)
2559 *ndel = deleted;
2560
2561 return (e.error);
2562 }
2563
2564 int
pfctl_table_del_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * ndel,int flags)2565 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2566 *addr, int size, int *ndel, int flags)
2567 {
2568 struct pfioc_table io;
2569
2570 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2571 return (EINVAL);
2572 }
2573 bzero(&io, sizeof io);
2574 io.pfrio_flags = flags;
2575 io.pfrio_table = *tbl;
2576 io.pfrio_buffer = addr;
2577 io.pfrio_esize = sizeof(*addr);
2578 io.pfrio_size = size;
2579
2580 if (ioctl(dev, DIOCRDELADDRS, &io))
2581 return (errno);
2582 if (ndel != NULL)
2583 *ndel = io.pfrio_ndel;
2584 return (0);
2585 }
2586
2587 int
pfctl_table_del_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * ndel,int flags)2588 pfctl_table_del_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr
2589 *addr, int size, int *ndel, int flags)
2590 {
2591 int ret;
2592 int off = 0;
2593 int partial_deleted;
2594 int chunk_size;
2595
2596 do {
2597 chunk_size = MIN(size - off, 256);
2598 ret = _pfctl_table_del_addrs_h(h, tbl, &addr[off], chunk_size,
2599 &partial_deleted, flags);
2600 if (ret != 0)
2601 break;
2602 if (ndel)
2603 *ndel += partial_deleted;
2604 off += chunk_size;
2605 } while (off < size);
2606
2607 return (ret);
2608 }
2609
2610 struct pfctl_change {
2611 int add;
2612 int del;
2613 int change;
2614 };
2615 #define _OUT(_field) offsetof(struct pfctl_change, _field)
2616 static struct snl_attr_parser ap_table_set_addr[] = {
2617 { .type = PF_TA_NBR_ADDED, .off = _OUT(add), .cb = snl_attr_get_uint32 },
2618 { .type = PF_TA_NBR_DELETED, .off = _OUT(del), .cb = snl_attr_get_uint32 },
2619 { .type = PF_TA_NBR_CHANGED, .off = _OUT(change), .cb = snl_attr_get_uint32 },
2620 };
2621 #undef _OUT
2622 SNL_DECLARE_PARSER(table_set_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_set_addr);
2623
2624 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)2625 _pfctl_table_set_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr
2626 *addrs, int size, int *nadd, int *ndel, int *nchange, int flags)
2627 {
2628 struct snl_writer nw;
2629 struct snl_errmsg_data e = {};
2630 struct nlmsghdr *hdr;
2631 struct pfctl_change change = { 0 };
2632 uint32_t seq_id;
2633 int family_id;
2634
2635 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2636 if (family_id == 0)
2637 return (ENOTSUP);
2638
2639 snl_init_writer(&h->ss, &nw);
2640 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_SET_ADDR);
2641
2642 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
2643 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
2644 for (int i = 0; i < size; i++)
2645 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]);
2646
2647 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2648 return (ENXIO);
2649 seq_id = hdr->nlmsg_seq;
2650
2651 if (! snl_send_message(&h->ss, hdr))
2652 return (ENXIO);
2653
2654 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2655 if (! snl_parse_nlmsg(&h->ss, hdr, &table_set_addr_parser, &change))
2656 continue;
2657 }
2658
2659 if (nadd)
2660 *nadd = change.add;
2661 if (ndel)
2662 *ndel = change.del;
2663 if (nchange)
2664 *nchange = change.change;
2665
2666 return (e.error);
2667 }
2668
2669 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)2670 pfctl_table_set_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl,
2671 struct pfr_addr *addr, int size, int *nadd, int *ndel,
2672 int *nchange, int flags)
2673 {
2674 int ret;
2675 int off = 0;
2676 int partial_add, partial_del, partial_change;
2677 int chunk_size;
2678
2679 do {
2680 flags &= ~(PFR_FLAG_START | PFR_FLAG_DONE);
2681 if (off == 0)
2682 flags |= PFR_FLAG_START;
2683 chunk_size = MIN(size - off, 256);
2684 if ((chunk_size + off) == size)
2685 flags |= PFR_FLAG_DONE;
2686 ret = _pfctl_table_set_addrs_h(h, tbl, &addr[off], chunk_size,
2687 &partial_add, &partial_del, &partial_change, flags);
2688 if (ret != 0)
2689 break;
2690 if (! (flags & PFR_FLAG_DONE)) {
2691 assert(partial_del == 0);
2692 }
2693 if (nadd)
2694 *nadd += partial_add;
2695 if (ndel)
2696 *ndel += partial_del;
2697 if (nchange)
2698 *nchange += partial_change;
2699 off += chunk_size;
2700 } while (off < size);
2701
2702 return (ret);
2703 }
2704
2705 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)2706 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2707 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags)
2708 {
2709 struct pfioc_table io;
2710
2711 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2712 return (EINVAL);
2713 }
2714 bzero(&io, sizeof io);
2715 io.pfrio_flags = flags;
2716 io.pfrio_table = *tbl;
2717 io.pfrio_buffer = addr;
2718 io.pfrio_esize = sizeof(*addr);
2719 io.pfrio_size = size;
2720 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0;
2721 if (ioctl(dev, DIOCRSETADDRS, &io))
2722 return (errno);
2723 if (nadd != NULL)
2724 *nadd = io.pfrio_nadd;
2725 if (ndel != NULL)
2726 *ndel = io.pfrio_ndel;
2727 if (nchange != NULL)
2728 *nchange = io.pfrio_nchange;
2729 if (size2 != NULL)
2730 *size2 = io.pfrio_size2;
2731 return (0);
2732 }
2733
pfctl_table_get_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int * size,int flags)2734 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr,
2735 int *size, int flags)
2736 {
2737 struct pfioc_table io;
2738
2739 if (tbl == NULL || size == NULL || *size < 0 ||
2740 (*size && addr == NULL)) {
2741 return (EINVAL);
2742 }
2743 bzero(&io, sizeof io);
2744 io.pfrio_flags = flags;
2745 io.pfrio_table = *tbl;
2746 io.pfrio_buffer = addr;
2747 io.pfrio_esize = sizeof(*addr);
2748 io.pfrio_size = *size;
2749 if (ioctl(dev, DIOCRGETADDRS, &io))
2750 return (errno);
2751 *size = io.pfrio_size;
2752 return (0);
2753 }
2754
2755 struct nl_addrs {
2756 size_t max;
2757 struct pfr_addr *addrs;
2758 size_t count;
2759 size_t total_count;
2760 };
2761
2762 #define _OUT(_field) offsetof(struct pfr_addr, _field)
2763 static const struct snl_attr_parser ap_pfr_addr[] = {
2764 { .type = PFR_A_AF, .off = _OUT(pfra_af), .cb = snl_attr_get_uint32 },
2765 { .type = PFR_A_NET, .off = _OUT(pfra_net), .cb = snl_attr_get_uint8 },
2766 { .type = PFR_A_NOT, .off = _OUT(pfra_not), .cb = snl_attr_get_bool },
2767 { .type = PFR_A_ADDR, .off = _OUT(pfra_ip6addr), .cb = snl_attr_get_in6_addr },
2768 };
2769 #undef _OUT
2770 SNL_DECLARE_ATTR_PARSER(pfr_addr_parser, ap_pfr_addr);
2771
2772 static bool
snl_attr_get_pfr_addrs(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)2773 snl_attr_get_pfr_addrs(struct snl_state *ss, struct nlattr *nla,
2774 const void *arg __unused, void *target)
2775 {
2776 struct nl_addrs *a = (struct nl_addrs *)target;
2777 bool ret;
2778
2779 if (a->count >= a->max)
2780 return (false);
2781
2782 ret = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla),
2783 &pfr_addr_parser, &a->addrs[a->count]);
2784 if (ret)
2785 a->count++;
2786
2787 return (ret);
2788 }
2789
2790 #define _OUT(_field) offsetof(struct nl_addrs, _field)
2791 static struct snl_attr_parser ap_table_get_addr[] = {
2792 { .type = PF_TA_ADDR, .off = 0, .cb = snl_attr_get_pfr_addrs },
2793 { .type = PF_TA_ADDR_COUNT, .off = _OUT(total_count), .cb = snl_attr_get_uint32 },
2794 };
2795 #undef _OUT
2796 SNL_DECLARE_PARSER(table_get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_get_addr);
2797 int
pfctl_table_get_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addr,int * size,int flags)2798 pfctl_table_get_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl,
2799 struct pfr_addr *addr, int *size, int flags)
2800 {
2801 struct nl_addrs addrs = { 0 };
2802 struct snl_writer nw;
2803 struct snl_errmsg_data e = {};
2804 struct nlmsghdr *hdr;
2805 uint32_t seq_id;
2806 int family_id;
2807
2808 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2809 if (family_id == 0)
2810 return (ENOTSUP);
2811
2812 snl_init_writer(&h->ss, &nw);
2813 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_GET_ADDR);
2814
2815 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
2816 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
2817
2818 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2819 return (ENXIO);
2820
2821 seq_id = hdr->nlmsg_seq;
2822 if (! snl_send_message(&h->ss, hdr))
2823 return (ENXIO);
2824
2825 addrs.addrs = addr;
2826 addrs.max = *size;
2827 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2828 if (! snl_parse_nlmsg(&h->ss, hdr, &table_get_addr_parser, &addrs))
2829 continue;
2830 }
2831
2832 *size = addrs.total_count;
2833
2834 return (e.error);
2835 }
2836
2837 int
pfctl_set_statusif(struct pfctl_handle * h,const char * ifname)2838 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname)
2839 {
2840 struct snl_writer nw;
2841 struct snl_errmsg_data e = {};
2842 struct nlmsghdr *hdr;
2843 uint32_t seq_id;
2844 int family_id;
2845
2846 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2847 if (family_id == 0)
2848 return (ENOTSUP);
2849
2850 snl_init_writer(&h->ss, &nw);
2851 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF);
2852
2853 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname);
2854
2855 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2856 return (ENXIO);
2857
2858 seq_id = hdr->nlmsg_seq;
2859
2860 if (! snl_send_message(&h->ss, hdr))
2861 return (ENXIO);
2862
2863 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2864 }
2865
2866 return (e.error);
2867 }
2868
2869 #define _IN(_field) offsetof(struct genlmsghdr, _field)
2870 #define _OUT(_field) offsetof(struct pfctl_natlook, _field)
2871 static struct snl_attr_parser ap_natlook[] = {
2872 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr },
2873 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr },
2874 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 },
2875 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 },
2876 };
2877 #undef _IN
2878 #undef _OUT
2879 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, snl_f_p_empty, ap_natlook);
2880
2881 int
pfctl_natlook(struct pfctl_handle * h,const struct pfctl_natlook_key * k,struct pfctl_natlook * r)2882 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k,
2883 struct pfctl_natlook *r)
2884 {
2885 struct snl_writer nw;
2886 struct snl_errmsg_data e = {};
2887 struct nlmsghdr *hdr;
2888 uint32_t seq_id;
2889 int family_id;
2890
2891 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2892 if (family_id == 0)
2893 return (ENOTSUP);
2894
2895 snl_init_writer(&h->ss, &nw);
2896 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK);
2897 hdr->nlmsg_flags |= NLM_F_DUMP;
2898
2899 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af);
2900 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction);
2901 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto);
2902 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6);
2903 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6);
2904 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport);
2905 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport);
2906
2907 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2908 return (ENXIO);
2909
2910 seq_id = hdr->nlmsg_seq;
2911
2912 if (! snl_send_message(&h->ss, hdr))
2913 return (ENXIO);
2914
2915 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2916 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r))
2917 continue;
2918 }
2919
2920 return (e.error);
2921 }
2922
2923 int
pfctl_set_debug(struct pfctl_handle * h,uint32_t level)2924 pfctl_set_debug(struct pfctl_handle *h, uint32_t level)
2925 {
2926 struct snl_writer nw;
2927 struct snl_errmsg_data e = {};
2928 struct nlmsghdr *hdr;
2929 uint32_t seq_id;
2930 int family_id;
2931
2932 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2933 if (family_id == 0)
2934 return (ENOTSUP);
2935
2936 snl_init_writer(&h->ss, &nw);
2937 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG);
2938
2939 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level);
2940
2941 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2942 return (ENXIO);
2943
2944 seq_id = hdr->nlmsg_seq;
2945
2946 if (! snl_send_message(&h->ss, hdr))
2947 return (ENXIO);
2948
2949 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2950 }
2951
2952 return (e.error);
2953 }
2954
2955 int
pfctl_set_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t seconds)2956 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds)
2957 {
2958 struct snl_writer nw;
2959 struct snl_errmsg_data e = {};
2960 struct nlmsghdr *hdr;
2961 uint32_t seq_id;
2962 int family_id;
2963
2964 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2965 if (family_id == 0)
2966 return (ENOTSUP);
2967
2968 snl_init_writer(&h->ss, &nw);
2969 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT);
2970
2971 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2972 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds);
2973
2974 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2975 return (ENXIO);
2976
2977 seq_id = hdr->nlmsg_seq;
2978
2979 if (! snl_send_message(&h->ss, hdr))
2980 return (ENXIO);
2981
2982 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2983 }
2984
2985 return (e.error);
2986 }
2987
2988 struct pfctl_nl_timeout {
2989 uint32_t seconds;
2990 };
2991 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field)
2992 static struct snl_attr_parser ap_get_timeout[] = {
2993 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
2994 };
2995 #undef _OUT
2996 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, snl_f_p_empty, ap_get_timeout);
2997
2998 int
pfctl_get_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t * seconds)2999 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds)
3000 {
3001 struct snl_writer nw;
3002 struct pfctl_nl_timeout to = {};
3003 struct snl_errmsg_data e = {};
3004 struct nlmsghdr *hdr;
3005 uint32_t seq_id;
3006 int family_id;
3007
3008 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3009 if (family_id == 0)
3010 return (ENOTSUP);
3011
3012 snl_init_writer(&h->ss, &nw);
3013 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT);
3014 hdr->nlmsg_flags |= NLM_F_DUMP;
3015
3016 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
3017
3018 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3019 return (ENXIO);
3020
3021 seq_id = hdr->nlmsg_seq;
3022
3023 if (! snl_send_message(&h->ss, hdr))
3024 return (ENXIO);
3025
3026 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3027 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to))
3028 continue;
3029 }
3030
3031 if (seconds != NULL)
3032 *seconds = to.seconds;
3033
3034 return (e.error);
3035 }
3036
3037 int
pfctl_set_limit(struct pfctl_handle * h,const int index,const uint limit)3038 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit)
3039 {
3040 struct snl_writer nw;
3041 struct snl_errmsg_data e = {};
3042 struct nlmsghdr *hdr;
3043 uint32_t seq_id;
3044 int family_id;
3045
3046 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3047 if (family_id == 0)
3048 return (ENOTSUP);
3049
3050 snl_init_writer(&h->ss, &nw);
3051 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT);
3052
3053 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
3054 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit);
3055
3056 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3057 return (ENXIO);
3058
3059 seq_id = hdr->nlmsg_seq;
3060
3061 if (! snl_send_message(&h->ss, hdr))
3062 return (ENXIO);
3063
3064 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3065 }
3066
3067 return (e.error);
3068 }
3069
3070 struct pfctl_nl_limit {
3071 unsigned int limit;
3072 };
3073 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field)
3074 static struct snl_attr_parser ap_get_limit[] = {
3075 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
3076 };
3077 #undef _OUT
3078 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, snl_f_p_empty, ap_get_limit);
3079
3080 int
pfctl_get_limit(struct pfctl_handle * h,const int index,uint * limit)3081 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit)
3082 {
3083 struct snl_writer nw;
3084 struct pfctl_nl_limit li = {};
3085 struct snl_errmsg_data e = {};
3086 struct nlmsghdr *hdr;
3087 uint32_t seq_id;
3088 int family_id;
3089
3090 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3091 if (family_id == 0)
3092 return (ENOTSUP);
3093
3094 snl_init_writer(&h->ss, &nw);
3095 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT);
3096 hdr->nlmsg_flags |= NLM_F_DUMP;
3097
3098 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
3099
3100 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3101 return (ENXIO);
3102
3103 seq_id = hdr->nlmsg_seq;
3104
3105 if (! snl_send_message(&h->ss, hdr))
3106 return (ENXIO);
3107
3108 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3109 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li))
3110 continue;
3111 }
3112
3113 if (limit != NULL)
3114 *limit = li.limit;
3115
3116 return (e.error);
3117 }
3118
3119 struct pfctl_nl_begin_addrs {
3120 uint32_t ticket;
3121 };
3122 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field)
3123 static struct snl_attr_parser ap_begin_addrs[] = {
3124 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
3125 };
3126 #undef _OUT
3127 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_begin_addrs);
3128
3129 int
pfctl_begin_addrs(struct pfctl_handle * h,uint32_t * ticket)3130 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket)
3131 {
3132 struct snl_writer nw;
3133 struct pfctl_nl_begin_addrs attrs = {};
3134 struct snl_errmsg_data e = {};
3135 struct nlmsghdr *hdr;
3136 uint32_t seq_id;
3137 int family_id;
3138
3139 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3140 if (family_id == 0)
3141 return (ENOTSUP);
3142
3143 snl_init_writer(&h->ss, &nw);
3144 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS);
3145 hdr->nlmsg_flags |= NLM_F_DUMP;
3146
3147 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3148 return (ENXIO);
3149
3150 seq_id = hdr->nlmsg_seq;
3151
3152 if (! snl_send_message(&h->ss, hdr))
3153 return (ENXIO);
3154
3155 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3156 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs))
3157 continue;
3158 }
3159
3160 if (ticket != NULL)
3161 *ticket = attrs.ticket;
3162
3163 return (e.error);
3164 }
3165
3166 int
pfctl_add_addr(struct pfctl_handle * h,const struct pfioc_pooladdr * pa,int which)3167 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which)
3168 {
3169 struct snl_writer nw;
3170 struct snl_errmsg_data e = {};
3171 struct nlmsghdr *hdr;
3172 uint32_t seq_id;
3173 int family_id;
3174
3175 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3176 if (family_id == 0)
3177 return (ENOTSUP);
3178
3179 snl_init_writer(&h->ss, &nw);
3180 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR);
3181
3182 snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action);
3183 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket);
3184 snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr);
3185 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num);
3186 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action);
3187 snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last);
3188 snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af);
3189 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor);
3190 snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr);
3191 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
3192
3193 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3194 return (ENXIO);
3195
3196 seq_id = hdr->nlmsg_seq;
3197
3198 if (! snl_send_message(&h->ss, hdr))
3199 return (ENXIO);
3200
3201 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3202 }
3203
3204 return (e.error);
3205 }
3206
3207 static const struct snl_attr_parser ap_get_addrs[] = {
3208 { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 },
3209 };
3210 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addrs);
3211
3212 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)3213 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
3214 uint8_t r_action, const char *anchor, uint32_t *nr, int which)
3215 {
3216 struct snl_writer nw;
3217 struct snl_errmsg_data e = {};
3218 struct nlmsghdr *hdr;
3219 uint32_t seq_id;
3220 int family_id;
3221
3222 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3223 if (family_id == 0)
3224 return (ENOTSUP);
3225
3226 snl_init_writer(&h->ss, &nw);
3227 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS);
3228
3229 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
3230 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
3231 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
3232 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
3233 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
3234
3235 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3236 return (ENXIO);
3237
3238 seq_id = hdr->nlmsg_seq;
3239
3240 if (! snl_send_message(&h->ss, hdr))
3241 return (ENXIO);
3242
3243 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3244 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr))
3245 continue;
3246 }
3247
3248 return (e.error);
3249 }
3250
3251 #define _OUT(_field) offsetof(struct pf_pooladdr, _field)
3252 static const struct snl_attr_parser ap_pool_addr[] = {
3253 { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
3254 { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
3255 };
3256 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr);
3257 #undef _OUT
3258
3259 #define _OUT(_field) offsetof(struct pfioc_pooladdr, _field)
3260 static const struct snl_attr_parser ap_get_addr[] = {
3261 { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 },
3262 { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
3263 { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
3264 { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 },
3265 { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 },
3266 { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 },
3267 { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
3268 { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string },
3269 { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested },
3270 };
3271 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addr);
3272 #undef _OUT
3273
3274 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)3275 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
3276 uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa,
3277 int which)
3278 {
3279 struct snl_writer nw;
3280 struct snl_errmsg_data e = {};
3281 struct nlmsghdr *hdr;
3282 uint32_t seq_id;
3283 int family_id;
3284
3285 family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3286 if (family_id == 0)
3287 return (ENOTSUP);
3288
3289 snl_init_writer(&h->ss, &nw);
3290 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR);
3291
3292 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
3293 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
3294 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
3295 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
3296 snl_add_msg_attr_u32(&nw, PF_AA_NR, nr);
3297 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
3298
3299 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3300 return (ENXIO);
3301
3302 seq_id = hdr->nlmsg_seq;
3303
3304 if (! snl_send_message(&h->ss, hdr))
3305 return (ENXIO);
3306
3307 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3308 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa))
3309 continue;
3310 }
3311
3312 return (e.error);
3313 }
3314
3315 #define _OUT(_field) offsetof(struct pfioc_ruleset, _field)
3316 static const struct snl_attr_parser ap_ruleset[] = {
3317 { .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
3318 { .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string },
3319 };
3320 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, snl_f_p_empty, ap_ruleset);
3321 #undef _OUT
3322
3323 int
pfctl_get_rulesets(struct pfctl_handle * h,const char * path,uint32_t * nr)3324 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr)
3325 {
3326 struct snl_writer nw;
3327 struct snl_errmsg_data e = {};
3328 struct nlmsghdr *hdr;
3329 struct pfioc_ruleset rs = {};
3330 uint32_t seq_id;
3331 int family_id;
3332
3333 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3334 if (family_id == 0)
3335 return (ENOTSUP);
3336
3337 snl_init_writer(&h->ss, &nw);
3338 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS);
3339
3340 snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
3341
3342 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3343 return (ENXIO);
3344
3345 seq_id = hdr->nlmsg_seq;
3346
3347 if (! snl_send_message(&h->ss, hdr))
3348 return (ENXIO);
3349
3350 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3351 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs))
3352 continue;
3353 }
3354
3355 *nr = rs.nr;
3356
3357 return (e.error);
3358 }
3359
3360 int
pfctl_get_ruleset(struct pfctl_handle * h,const char * path,uint32_t nr,struct pfioc_ruleset * rs)3361 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs)
3362 {
3363 struct snl_writer nw;
3364 struct snl_errmsg_data e = {};
3365 struct nlmsghdr *hdr;
3366 uint32_t seq_id;
3367 int family_id;
3368
3369 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3370 if (family_id == 0)
3371 return (ENOTSUP);
3372
3373 snl_init_writer(&h->ss, &nw);
3374 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET);
3375
3376 snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
3377 snl_add_msg_attr_u32(&nw, PF_RS_NR, nr);
3378
3379 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3380 return (ENXIO);
3381
3382 seq_id = hdr->nlmsg_seq;
3383
3384 if (! snl_send_message(&h->ss, hdr))
3385 return (ENXIO);
3386
3387 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3388 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs))
3389 continue;
3390 }
3391
3392 rs->nr = nr;
3393 strlcpy(rs->path, path, sizeof(rs->path));
3394
3395 return (e.error);
3396 }
3397
3398 #define _OUT(_field) offsetof(struct pfctl_src_node, _field)
3399 static struct snl_attr_parser ap_srcnode[] = {
3400 { .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr },
3401 { .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr },
3402 { .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
3403 { .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
3404 { .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
3405 { .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
3406 { .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
3407 { .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
3408 { .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 },
3409 { .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
3410 { .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 },
3411 { .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 },
3412 { .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 },
3413 { .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested },
3414 { .type = PF_SN_RAF, .off = _OUT(raf), .cb = snl_attr_get_uint8 },
3415 { .type = PF_SN_NODE_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 },
3416 };
3417 #undef _OUT
3418 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, snl_f_p_empty, ap_srcnode);
3419
3420 int
pfctl_get_srcnodes(struct pfctl_handle * h,pfctl_get_srcnode_fn fn,void * arg)3421 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg)
3422 {
3423 struct snl_writer nw;
3424 struct pfctl_src_node sn;
3425 struct snl_errmsg_data e = {};
3426 struct nlmsghdr *hdr;
3427 uint32_t seq_id;
3428 int family_id;
3429 int ret;
3430
3431 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3432 if (family_id == 0)
3433 return (ENOTSUP);
3434
3435 snl_init_writer(&h->ss, &nw);
3436 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES);
3437
3438 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3439 return (ENXIO);
3440
3441 seq_id = hdr->nlmsg_seq;
3442
3443 if (!snl_send_message(&h->ss, hdr))
3444 return (ENXIO);
3445
3446 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3447 bzero(&sn, sizeof(sn));
3448 if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn))
3449 continue;
3450
3451 ret = fn(&sn, arg);
3452 if (ret != 0)
3453 return (ret);
3454 }
3455
3456 return (e.error);
3457 }
3458
3459 static struct snl_attr_parser ap_ndel[] = {
3460 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 },
3461 };
3462 SNL_DECLARE_PARSER(ndel_parser, struct genlmsghdr, snl_f_p_empty, ap_ndel);
3463
3464 int
pfctl_clear_tables(struct pfctl_handle * h,struct pfr_table * filter,int * ndel,int flags)3465 pfctl_clear_tables(struct pfctl_handle *h, struct pfr_table *filter,
3466 int *ndel, int flags)
3467 {
3468 struct snl_writer nw;
3469 struct snl_errmsg_data e = {};
3470 struct nlmsghdr *hdr;
3471 uint32_t seq_id;
3472 int family_id;
3473
3474 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3475 if (family_id == 0)
3476 return (ENOTSUP);
3477
3478 snl_init_writer(&h->ss, &nw);
3479 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLEAR_TABLES);
3480
3481 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor);
3482 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name);
3483 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags);
3484 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3485
3486 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3487 return (ENXIO);
3488
3489 seq_id = hdr->nlmsg_seq;
3490
3491 if (!snl_send_message(&h->ss, hdr))
3492 return (ENXIO);
3493
3494 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3495 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel))
3496 continue;
3497 }
3498
3499 return (e.error);
3500 }
3501
3502 static struct snl_attr_parser ap_nadd[] = {
3503 { .type = PF_T_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 },
3504 };
3505 SNL_DECLARE_PARSER(nadd_parser, struct genlmsghdr, snl_f_p_empty, ap_nadd);
3506 int
pfctl_add_table(struct pfctl_handle * h,struct pfr_table * table,int * nadd,int flags)3507 pfctl_add_table(struct pfctl_handle *h, struct pfr_table *table,
3508 int *nadd, int flags)
3509 {
3510 struct snl_writer nw;
3511 struct snl_errmsg_data e = {};
3512 struct nlmsghdr *hdr;
3513 uint32_t seq_id;
3514 int family_id;
3515
3516 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3517 if (family_id == 0)
3518 return (ENOTSUP);
3519
3520 snl_init_writer(&h->ss, &nw);
3521 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_TABLE);
3522
3523 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor);
3524 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name);
3525 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags);
3526 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3527
3528 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3529 return (ENXIO);
3530
3531 seq_id = hdr->nlmsg_seq;
3532
3533 if (!snl_send_message(&h->ss, hdr))
3534 return (ENXIO);
3535
3536 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3537 if (!snl_parse_nlmsg(&h->ss, hdr, &nadd_parser, nadd))
3538 continue;
3539 }
3540
3541 return (e.error);
3542 }
3543
3544 int
pfctl_del_table(struct pfctl_handle * h,struct pfr_table * table,int * ndel,int flags)3545 pfctl_del_table(struct pfctl_handle *h, struct pfr_table *table,
3546 int *ndel, int flags)
3547 {
3548 struct snl_writer nw;
3549 struct snl_errmsg_data e = {};
3550 struct nlmsghdr *hdr;
3551 uint32_t seq_id;
3552 int family_id;
3553
3554 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3555 if (family_id == 0)
3556 return (ENOTSUP);
3557
3558 snl_init_writer(&h->ss, &nw);
3559 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_DEL_TABLE);
3560
3561 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor);
3562 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name);
3563 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags);
3564 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3565
3566 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3567 return (ENXIO);
3568
3569 seq_id = hdr->nlmsg_seq;
3570
3571 if (!snl_send_message(&h->ss, hdr))
3572 return (ENXIO);
3573
3574 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3575 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel))
3576 continue;
3577 }
3578
3579 return (e.error);
3580 }
3581
3582 static bool
snl_attr_get_uint64_into_int_array(struct snl_state * ss,struct nlattr * nla,const void * arg,void * target)3583 snl_attr_get_uint64_into_int_array(struct snl_state *ss, struct nlattr *nla,
3584 const void *arg, void *target)
3585 {
3586 uint64_t *u64target;
3587 struct snl_uint64_array a = {
3588 .count = 0,
3589 .max = (size_t)arg,
3590 };
3591 bool error;
3592
3593 u64target = malloc(a.max * sizeof(uint64_t));
3594 a.array = u64target;
3595
3596 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a);
3597 if (! error)
3598 return (error);
3599
3600 for (size_t i = 0; i < a.count; i++)
3601 ((int *)target)[i] = (int)u64target[i];
3602
3603 free(u64target);
3604
3605 return (true);
3606 }
3607
3608 #define _OUT(_field) offsetof(struct pfr_table, _field)
3609 static const struct snl_attr_parser ap_table[] = {
3610 { .type = PF_T_ANCHOR, .off = _OUT(pfrt_anchor), .arg = (void *)MAXPATHLEN, .cb = snl_attr_copy_string },
3611 { .type = PF_T_NAME, .off = _OUT(pfrt_name), .arg = (void *)PF_TABLE_NAME_SIZE, .cb =snl_attr_copy_string },
3612 { .type = PF_T_TABLE_FLAGS, .off = _OUT(pfrt_flags), .cb = snl_attr_get_uint32 },
3613 };
3614 #undef _OUT
3615 SNL_DECLARE_ATTR_PARSER(table_parser, ap_table);
3616 #define _OUT(_field) offsetof(struct pfr_tstats, _field)
3617 static struct snl_attr_parser ap_tstats[] = {
3618 { .type = PF_TS_TABLE, .off = _OUT(pfrts_t), .arg = &table_parser, .cb = snl_attr_get_nested },
3619 { .type = PF_TS_PACKETS, .off = _OUT(pfrts_packets), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array},
3620 { .type = PF_TS_BYTES, .off = _OUT(pfrts_bytes), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array },
3621 { .type = PF_TS_MATCH, .off = _OUT(pfrts_match), .cb = snl_attr_get_uint64 },
3622 {. type = PF_TS_NOMATCH, .off = _OUT(pfrts_nomatch), .cb = snl_attr_get_uint64 },
3623 { .type = PF_TS_TZERO, .off = _OUT(pfrts_tzero), .cb = snl_attr_get_uint64 },
3624 { .type = PF_TS_CNT, .off = _OUT(pfrts_cnt), .cb = snl_attr_get_uint64 },
3625 { .type = PF_TS_REFCNT, .off = _OUT(pfrts_refcnt), . arg = (void *)PFR_REFCNT_MAX, .cb = snl_attr_get_uint64_into_int_array },
3626 };
3627 #undef _OUT
3628 SNL_DECLARE_PARSER(tstats_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats);
3629
3630 int
pfctl_get_tstats(struct pfctl_handle * h,const struct pfr_table * filter,pfctl_get_tstats_fn fn,void * arg)3631 pfctl_get_tstats(struct pfctl_handle *h, const struct pfr_table *filter,
3632 pfctl_get_tstats_fn fn, void *arg)
3633 {
3634 struct snl_writer nw;
3635 struct snl_errmsg_data e = {};
3636 struct nlmsghdr *hdr;
3637 uint32_t seq_id;
3638 int family_id;
3639 int ret;
3640
3641 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3642 if (family_id == 0)
3643 return (ENOTSUP);
3644
3645 snl_init_writer(&h->ss, &nw);
3646 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TSTATS);
3647
3648 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor);
3649 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name);
3650 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags);
3651
3652 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3653 return (ENXIO);
3654
3655 seq_id = hdr->nlmsg_seq;
3656
3657 if (!snl_send_message(&h->ss, hdr))
3658 return (ENXIO);
3659
3660 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3661 struct pfr_tstats tstats = {};
3662
3663 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_parser, &tstats))
3664 continue;
3665
3666 ret = fn(&tstats, arg);
3667 if (ret != 0)
3668 break;
3669 }
3670
3671 return (e.error);
3672 }
3673
3674 static struct snl_attr_parser ap_tstats_clr[] = {
3675 { .type = PF_TS_NZERO, .off = 0, .cb = snl_attr_get_uint64 },
3676 };
3677 SNL_DECLARE_PARSER(tstats_clr_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats_clr);
3678
3679 int
pfctl_clear_tstats(struct pfctl_handle * h,const struct pfr_table * filter,int * nzero,int flags)3680 pfctl_clear_tstats(struct pfctl_handle *h, const struct pfr_table *filter,
3681 int *nzero, int flags)
3682 {
3683 struct snl_writer nw;
3684 struct snl_errmsg_data e = {};
3685 struct nlmsghdr *hdr;
3686 uint64_t zero;
3687 uint32_t seq_id;
3688 int family_id;
3689
3690 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3691 if (family_id == 0)
3692 return (ENOTSUP);
3693
3694 snl_init_writer(&h->ss, &nw);
3695 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_TSTATS);
3696
3697 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor);
3698 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name);
3699 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags);
3700 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3701
3702 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3703 return (ENXIO);
3704
3705 seq_id = hdr->nlmsg_seq;
3706
3707 if (!snl_send_message(&h->ss, hdr))
3708 return (ENXIO);
3709
3710 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3711 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_clr_parser, &zero))
3712 continue;
3713 if (nzero)
3714 *nzero = (uint32_t)zero;
3715 }
3716
3717 return (e.error);
3718 }
3719
3720 static struct snl_attr_parser ap_clr_addrs[] = {
3721 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint64 },
3722 };
3723 SNL_DECLARE_PARSER(clr_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_clr_addrs);
3724
3725 int
pfctl_clear_addrs(struct pfctl_handle * h,const struct pfr_table * filter,int * ndel,int flags)3726 pfctl_clear_addrs(struct pfctl_handle *h, const struct pfr_table *filter,
3727 int *ndel, int flags)
3728 {
3729 struct snl_writer nw;
3730 struct snl_errmsg_data e = {};
3731 struct nlmsghdr *hdr;
3732 uint64_t del;
3733 uint32_t seq_id;
3734 int family_id;
3735
3736 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3737 if (family_id == 0)
3738 return (ENOTSUP);
3739
3740 snl_init_writer(&h->ss, &nw);
3741 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_ADDRS);
3742
3743 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor);
3744 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name);
3745 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags);
3746 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3747
3748 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3749 return (ENXIO);
3750
3751 seq_id = hdr->nlmsg_seq;
3752
3753 if (!snl_send_message(&h->ss, hdr))
3754 return (ENXIO);
3755
3756 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3757 if (!snl_parse_nlmsg(&h->ss, hdr, &clr_addrs_parser, &del))
3758 continue;
3759 if (ndel)
3760 *ndel = (uint32_t)del;
3761 }
3762
3763 return (e.error);
3764 }
3765
3766 struct nl_astats {
3767 struct pfr_astats *a;
3768 size_t max;
3769 size_t count;
3770 uint32_t total_count;
3771 uint32_t zeroed;
3772 };
3773
3774 #define _OUT(_field) offsetof(struct pfr_astats, _field)
3775 static const struct snl_attr_parser ap_pfr_astats[] = {
3776 { .type = PF_AS_ADDR , .off = _OUT(pfras_a), .arg = &pfr_addr_parser, .cb = snl_attr_get_nested },
3777 { .type = PF_AS_PACKETS, .off = _OUT(pfras_packets), .arg = (void *)(PFR_DIR_MAX * PFR_OP_ADDR_MAX), .cb = snl_attr_get_uint64_array },
3778 { .type = PF_AS_BYTES, .off = _OUT(pfras_bytes), .arg = (void *)(PFR_DIR_MAX * PFR_OP_ADDR_MAX), .cb = snl_attr_get_uint64_array },
3779 { .type = PF_AS_TZERO, .off = _OUT(pfras_tzero), .cb = snl_attr_get_time_t },
3780 };
3781 #undef _OUT
3782 SNL_DECLARE_ATTR_PARSER(pfr_astats_parser, ap_pfr_astats);
3783
3784 static bool
snl_attr_get_pfr_astats(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)3785 snl_attr_get_pfr_astats(struct snl_state *ss, struct nlattr *nla,
3786 const void *arg __unused, void *target)
3787 {
3788 struct nl_astats *a = (struct nl_astats *)target;
3789 bool ret;
3790
3791 if (a->count >= a->max)
3792 return (false);
3793
3794 ret = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla),
3795 &pfr_astats_parser, &a->a[a->count]);
3796 if (ret)
3797 a->count++;
3798
3799 return (ret);
3800 }
3801
3802 #define _OUT(_field) offsetof(struct nl_astats, _field)
3803 static struct snl_attr_parser ap_table_get_astats[] = {
3804 { .type = PF_TAS_ASTATS, .off = 0, .cb = snl_attr_get_pfr_astats },
3805 { .type = PF_TAS_ASTATS_COUNT, .off = _OUT(total_count), .cb = snl_attr_get_uint32 },
3806 { .type = PF_TAS_ASTATS_ZEROED, .off = _OUT(zeroed), .cb = snl_attr_get_uint32 },
3807 };
3808 #undef _OUT
3809 SNL_DECLARE_PARSER(table_astats_parser, struct genlmsghdr, snl_f_p_empty, ap_table_get_astats);
3810
3811 int
pfctl_get_astats(struct pfctl_handle * h,const struct pfr_table * tbl,struct pfr_astats * as,int * size,int flags)3812 pfctl_get_astats(struct pfctl_handle *h, const struct pfr_table *tbl,
3813 struct pfr_astats *as, int *size, int flags)
3814 {
3815 struct snl_writer nw;
3816 struct snl_errmsg_data e = {};
3817 struct nlmsghdr *hdr;
3818 struct nl_astats out = { 0 };
3819 uint32_t seq_id;
3820 int family_id;
3821
3822 if (tbl == NULL || size == NULL || *size < 0 ||
3823 (*size && as == NULL)) {
3824 errno = EINVAL;
3825 return (-1);
3826 }
3827
3828 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3829 if (family_id == 0)
3830 return (ENOTSUP);
3831
3832 snl_init_writer(&h->ss, &nw);
3833
3834 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_GET_ASTATS);
3835
3836 snl_add_msg_attr_table(&nw, PF_TAS_TABLE, tbl);
3837 snl_add_msg_attr_u32(&nw, PF_TAS_FLAGS, flags);
3838
3839 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3840 return (ENXIO);
3841 seq_id = hdr->nlmsg_seq;
3842
3843 if (! snl_send_message(&h->ss, hdr))
3844 return (ENXIO);
3845
3846 out.a = as;
3847 out.max = *size;
3848
3849 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3850 if (! snl_parse_nlmsg(&h->ss, hdr, &table_astats_parser, &out))
3851 continue;
3852 }
3853
3854 *size = out.total_count;
3855
3856 return (0);
3857 }
3858
3859 static int
_pfctl_clr_astats(struct pfctl_handle * h,const struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * nzero,int flags)3860 _pfctl_clr_astats(struct pfctl_handle *h, const struct pfr_table *tbl,
3861 struct pfr_addr *addrs, int size, int *nzero, int flags)
3862 {
3863 struct snl_writer nw;
3864 struct snl_errmsg_data e = {};
3865 struct nlmsghdr *hdr;
3866 uint32_t seq_id;
3867 struct nl_astats attrs;
3868 int family_id;
3869
3870 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3871 if (family_id == 0)
3872 return (ENOTSUP);
3873
3874 snl_init_writer(&h->ss, &nw);
3875 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_CLEAR_ASTATS);
3876
3877 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
3878 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
3879 for (int i = 0; i < size; i++)
3880 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]);
3881
3882 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3883 return (ENXIO);
3884 seq_id = hdr->nlmsg_seq;
3885
3886 if (! snl_send_message(&h->ss, hdr))
3887 return (ENXIO);
3888
3889 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3890 if (! snl_parse_nlmsg(&h->ss, hdr, &table_astats_parser, &attrs))
3891 continue;
3892 }
3893
3894 if (nzero)
3895 *nzero = attrs.zeroed;
3896
3897 return (e.error);
3898 }
3899
3900 int
pfctl_clr_astats(struct pfctl_handle * h,const struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * nzero,int flags)3901 pfctl_clr_astats(struct pfctl_handle *h, const struct pfr_table *tbl,
3902 struct pfr_addr *addrs, int size, int *nzero, int flags)
3903 {
3904 int ret;
3905 int off = 0;
3906 int partial_zeroed;
3907 int chunk_size;
3908
3909 do {
3910 chunk_size = MIN(size - off, 256);
3911 ret = _pfctl_clr_astats(h, tbl, &addrs[off], chunk_size,
3912 &partial_zeroed, flags);
3913 if (ret != 0)
3914 break;
3915 if (nzero)
3916 *nzero += partial_zeroed;
3917 off += chunk_size;
3918 } while (off < size);
3919
3920 return (ret);
3921 }
3922
3923 static int
_pfctl_test_addrs(struct pfctl_handle * h,const struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * nmatch,int flags)3924 _pfctl_test_addrs(struct pfctl_handle *h, const struct pfr_table *tbl,
3925 struct pfr_addr *addrs, int size, int *nmatch, int flags)
3926 {
3927 struct snl_writer nw;
3928 struct snl_errmsg_data e = {};
3929 struct nlmsghdr *hdr;
3930 uint32_t seq_id;
3931 struct nl_astats attrs;
3932 int family_id;
3933
3934 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3935 if (family_id == 0)
3936 return (ENOTSUP);
3937
3938 snl_init_writer(&h->ss, &nw);
3939 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_TEST_ADDRS);
3940
3941 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
3942 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
3943 for (int i = 0; i < size; i++)
3944 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]);
3945
3946 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3947 return (ENXIO);
3948 seq_id = hdr->nlmsg_seq;
3949
3950 if (! snl_send_message(&h->ss, hdr))
3951 return (ENXIO);
3952
3953 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3954 if (! snl_parse_nlmsg(&h->ss, hdr, &table_astats_parser, &attrs))
3955 continue;
3956 }
3957
3958 if (nmatch)
3959 *nmatch = attrs.total_count;
3960
3961 return (e.error);
3962 }
3963
3964 int
pfctl_test_addrs(struct pfctl_handle * h,const struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * nmatch,int flags)3965 pfctl_test_addrs(struct pfctl_handle *h, const struct pfr_table *tbl,
3966 struct pfr_addr *addrs, int size, int *nmatch, int flags)
3967 {
3968 int ret;
3969 int off = 0;
3970 int partial_match;
3971 int chunk_size;
3972
3973 if (nmatch)
3974 *nmatch = 0;
3975
3976 do {
3977 chunk_size = MIN(size - off, 256);
3978 ret = _pfctl_test_addrs(h, tbl, &addrs[off], chunk_size,
3979 &partial_match, flags);
3980 if (ret != 0)
3981 break;
3982 if (nmatch)
3983 *nmatch += partial_match;
3984 off += chunk_size;
3985 } while (off < size);
3986
3987 return (ret);
3988 }
3989
3990 static void
snl_add_msg_attr_limit_rate(struct snl_writer * nw,uint32_t type,const struct pfctl_limit_rate * rate)3991 snl_add_msg_attr_limit_rate(struct snl_writer *nw, uint32_t type,
3992 const struct pfctl_limit_rate *rate)
3993 {
3994 int off;
3995
3996 off = snl_add_msg_attr_nested(nw, type);
3997
3998 snl_add_msg_attr_u32(nw, PF_LR_LIMIT, rate->limit);
3999 snl_add_msg_attr_u32(nw, PF_LR_SECONDS, rate->seconds);
4000
4001 snl_end_attr_nested(nw, off);
4002 }
4003
4004 #define _OUT(_field) offsetof(struct pfctl_limit_rate, _field)
4005 static const struct snl_attr_parser ap_limit_rate[] = {
4006 { .type = PF_LR_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
4007 { .type = PF_LR_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
4008 };
4009 SNL_DECLARE_ATTR_PARSER(limit_rate_parser, ap_limit_rate);
4010 #undef _OUT
4011
4012 #define _OUT(_field) offsetof(struct pfctl_state_lim, _field)
4013 static struct snl_attr_parser ap_statelim[] = {
4014 { .type = PF_SL_NAME, .off = _OUT(name), .arg_u32 = PF_STATELIM_NAME_LEN, .cb = snl_attr_copy_string },
4015 { .type = PF_SL_ID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
4016 { .type = PF_SL_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
4017 { .type = PF_SL_RATE, .off = _OUT(rate), .arg = &limit_rate_parser, .cb = snl_attr_get_nested },
4018 { .type = PF_SL_DESCR, .off = _OUT(description), .arg_u32 = PF_STATELIM_DESCR_LEN, .cb = snl_attr_copy_string },
4019 { .type = PF_SL_INUSE, .off = _OUT(inuse), .cb = snl_attr_get_uint32 },
4020 { .type = PF_SL_ADMITTED, .off = _OUT(admitted), .cb = snl_attr_get_uint64 },
4021 { .type = PF_SL_HARDLIMITED, .off = _OUT(hardlimited), .cb = snl_attr_get_uint64 },
4022 { .type = PF_SL_RATELIMITED, .off = _OUT(ratelimited), .cb = snl_attr_get_uint64 },
4023 };
4024 #undef _OUT
4025 SNL_DECLARE_PARSER(statelim_parser, struct genlmsghdr, snl_f_p_empty, ap_statelim);
4026
4027 int
pfctl_state_limiter_nget(struct pfctl_handle * h,struct pfctl_state_lim * lim)4028 pfctl_state_limiter_nget(struct pfctl_handle *h, struct pfctl_state_lim *lim)
4029 {
4030 struct snl_writer nw;
4031 struct snl_errmsg_data e = {};
4032 struct nlmsghdr *hdr;
4033 uint32_t seq_id;
4034 int family_id;
4035
4036 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4037 if (family_id == 0)
4038 return (ENOTSUP);
4039
4040 snl_init_writer(&h->ss, &nw);
4041 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_STATE_LIMITER_NGET);
4042
4043 snl_add_msg_attr_u32(&nw, PF_SL_ID, lim->id);
4044
4045 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4046 return (ENXIO);
4047 seq_id = hdr->nlmsg_seq;
4048
4049 if (! snl_send_message(&h->ss, hdr))
4050 return (ENXIO);
4051
4052 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4053 if (! snl_parse_nlmsg(&h->ss, hdr, &statelim_parser, lim))
4054 continue;
4055 }
4056
4057 return (e.error);
4058 }
4059
4060 int
pfctl_state_limiter_add(struct pfctl_handle * h,struct pfctl_state_lim * lim)4061 pfctl_state_limiter_add(struct pfctl_handle *h, struct pfctl_state_lim *lim)
4062 {
4063 struct snl_writer nw;
4064 struct snl_errmsg_data e = {};
4065 struct nlmsghdr *hdr;
4066 uint32_t seq_id;
4067 int family_id;
4068
4069 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4070 if (family_id == 0)
4071 return (ENOTSUP);
4072
4073 snl_init_writer(&h->ss, &nw);
4074 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_STATE_LIMITER_ADD);
4075
4076 snl_add_msg_attr_u32(&nw, PF_SL_ID, lim->id);
4077 snl_add_msg_attr_u32(&nw, PF_SL_TICKET, lim->ticket);
4078 snl_add_msg_attr_string(&nw, PF_SL_NAME, lim->name);
4079 snl_add_msg_attr_u32(&nw, PF_SL_LIMIT, lim->limit);
4080 snl_add_msg_attr_limit_rate(&nw, PF_SL_RATE, &lim->rate);
4081 snl_add_msg_attr_string(&nw, PF_SL_DESCR, lim->description);
4082
4083 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4084 return (ENXIO);
4085 seq_id = hdr->nlmsg_seq;
4086
4087 if (! snl_send_message(&h->ss, hdr))
4088 return (ENXIO);
4089
4090 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4091 if (! snl_parse_nlmsg(&h->ss, hdr, &statelim_parser, lim))
4092 continue;
4093 }
4094
4095 return (e.error);
4096 }
4097
4098 #define _OUT(_field) offsetof(struct pfctl_source_lim, _field)
4099 static struct snl_attr_parser ap_sourcelim[] = {
4100 { .type = PF_SCL_NAME, .off = _OUT(name), .arg_u32 = PF_SOURCELIM_NAME_LEN, .cb = snl_attr_copy_string },
4101 { .type = PF_SCL_ID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
4102 { .type = PF_SCL_ENTRIES, .off = _OUT(entries), .cb = snl_attr_get_uint32 },
4103 { .type = PF_SCL_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
4104 { .type = PF_SCL_RATE, .off = _OUT(rate), .arg = &limit_rate_parser, .cb = snl_attr_get_nested },
4105 { .type = PF_SCL_OVERLOAD_TBL_NAME, .off = _OUT(overload_tblname), .arg_u32 = PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
4106 { .type = PF_SCL_OVERLOAD_HIGH_WM, .off = _OUT(overload_hwm), .cb = snl_attr_get_uint32 },
4107 { .type = PF_SCL_OVERLOAD_LOW_WM, .off = _OUT(overload_lwm), .cb = snl_attr_get_uint32 },
4108 { .type = PF_SCL_INET_PREFIX, .off = _OUT(inet_prefix), .cb = snl_attr_get_uint32 },
4109 { .type = PF_SCL_INET6_PREFIX, .off = _OUT(inet6_prefix), .cb = snl_attr_get_uint32 },
4110 { .type = PF_SCL_DESCR, .off = _OUT(description), .arg_u32 = PF_SOURCELIM_DESCR_LEN, .cb = snl_attr_copy_string },
4111 { .type = PF_SCL_NENTRIES, .off = _OUT(nentries), .cb = snl_attr_get_uint32 },
4112 { .type = PF_SCL_INUSE, .off = _OUT(inuse), .cb = snl_attr_get_uint32 },
4113 { .type = PF_SCL_ADDR_ALLOCS, .off = _OUT(addrallocs), .cb = snl_attr_get_uint64 },
4114 { .type = PF_SCL_ADDR_NOMEM, .off = _OUT(addrnomem), .cb = snl_attr_get_uint64 },
4115 { .type = PF_SCL_ADMITTED, .off = _OUT(admitted), .cb = snl_attr_get_uint64 },
4116 { .type = PF_SCL_ADDRLIMITED, .off = _OUT(addrlimited), .cb = snl_attr_get_uint64 },
4117 { .type = PF_SCL_HARDLIMITED, .off = _OUT(hardlimited), .cb = snl_attr_get_uint64 },
4118 { .type = PF_SCL_RATELIMITED, .off = _OUT(ratelimited), .cb = snl_attr_get_uint64 },
4119 };
4120 #undef _OUT
4121 SNL_DECLARE_PARSER(sourcelim_parser, struct genlmsghdr, snl_f_p_empty, ap_sourcelim);
4122
4123 int
pfctl_source_limiter_add(struct pfctl_handle * h,struct pfctl_source_lim * lim)4124 pfctl_source_limiter_add(struct pfctl_handle *h, struct pfctl_source_lim *lim)
4125 {
4126 struct snl_writer nw;
4127 struct snl_errmsg_data e = {};
4128 struct nlmsghdr *hdr;
4129 uint32_t seq_id;
4130 int family_id;
4131
4132 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4133 if (family_id == 0)
4134 return (ENOTSUP);
4135
4136 snl_init_writer(&h->ss, &nw);
4137 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SOURCE_LIMITER_ADD);
4138
4139 snl_add_msg_attr_u32(&nw, PF_SCL_TICKET, lim->ticket);
4140 snl_add_msg_attr_string(&nw, PF_SCL_NAME, lim->name);
4141 snl_add_msg_attr_u32(&nw, PF_SCL_ID, lim->id);
4142 snl_add_msg_attr_u32(&nw, PF_SCL_ENTRIES, lim->entries);
4143 snl_add_msg_attr_u32(&nw, PF_SCL_LIMIT, lim->limit);
4144 snl_add_msg_attr_limit_rate(&nw, PF_SCL_RATE, &lim->rate);
4145 snl_add_msg_attr_string(&nw, PF_SCL_OVERLOAD_TBL_NAME, lim->overload_tblname);
4146 snl_add_msg_attr_u32(&nw, PF_SCL_OVERLOAD_HIGH_WM, lim->overload_hwm);
4147 snl_add_msg_attr_u32(&nw, PF_SCL_OVERLOAD_LOW_WM, lim->overload_lwm);
4148 snl_add_msg_attr_u32(&nw, PF_SCL_INET_PREFIX, lim->inet_prefix);
4149 snl_add_msg_attr_u32(&nw, PF_SCL_INET6_PREFIX, lim->inet6_prefix);
4150 snl_add_msg_attr_string(&nw, PF_SCL_DESCR, lim->description);
4151
4152 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4153 return (ENXIO);
4154 seq_id = hdr->nlmsg_seq;
4155
4156 if (! snl_send_message(&h->ss, hdr))
4157 return (ENXIO);
4158
4159 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4160 if (! snl_parse_nlmsg(&h->ss, hdr, &sourcelim_parser, lim))
4161 continue;
4162 }
4163
4164 return (e.error);
4165 }
4166
4167 static int
_pfctl_source_limiter_get(struct pfctl_handle * h,int cmd,struct pfctl_source_lim * lim)4168 _pfctl_source_limiter_get(struct pfctl_handle *h, int cmd, struct pfctl_source_lim *lim)
4169 {
4170 struct snl_writer nw;
4171 struct snl_errmsg_data e = {};
4172 struct nlmsghdr *hdr;
4173 uint32_t seq_id;
4174 int family_id;
4175
4176 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4177 if (family_id == 0)
4178 return (ENOTSUP);
4179
4180 snl_init_writer(&h->ss, &nw);
4181 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
4182
4183 snl_add_msg_attr_u32(&nw, PF_SCL_ID, lim->id);
4184
4185 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4186 return (ENXIO);
4187 seq_id = hdr->nlmsg_seq;
4188
4189 if (! snl_send_message(&h->ss, hdr))
4190 return (ENXIO);
4191
4192 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4193 if (! snl_parse_nlmsg(&h->ss, hdr, &sourcelim_parser, lim))
4194 continue;
4195 }
4196
4197 return (e.error);
4198 }
4199
4200 int
pfctl_source_limiter_get(struct pfctl_handle * h,struct pfctl_source_lim * lim)4201 pfctl_source_limiter_get(struct pfctl_handle *h, struct pfctl_source_lim *lim)
4202 {
4203 return (_pfctl_source_limiter_get(h, PFNL_CMD_SOURCE_LIMITER_GET, lim));
4204 }
4205
4206 int
pfctl_source_limiter_nget(struct pfctl_handle * h,struct pfctl_source_lim * lim)4207 pfctl_source_limiter_nget(struct pfctl_handle *h, struct pfctl_source_lim *lim)
4208 {
4209 return (_pfctl_source_limiter_get(h, PFNL_CMD_SOURCE_LIMITER_NGET, lim));
4210 }
4211
4212 #define _OUT(_field) offsetof(struct pfctl_source, _field)
4213 static struct snl_attr_parser ap_source[] = {
4214 { .type = PF_SRC_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
4215 { .type = PF_SRC_RDOMAIN, .off = _OUT(rdomain), .cb = snl_attr_get_uint32 },
4216 { .type = PF_SRC_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr },
4217 { .type = PF_SRC_INUSE, .off = _OUT(inuse), .cb = snl_attr_get_uint32 },
4218 { .type = PF_SRC_ADMITTED, .off = _OUT(admitted), .cb = snl_attr_get_uint64 },
4219 { .type = PF_SRC_HARDLIMITED, .off = _OUT(hardlimited), .cb = snl_attr_get_uint64 },
4220 { .type = PF_SRC_RATELIMITED, .off = _OUT(ratelimited), .cb = snl_attr_get_uint64 },
4221 { .type = PF_SRC_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
4222 { .type = PF_SRC_INET_PREFIX, .off = _OUT(inet_prefix), .cb = snl_attr_get_uint32 },
4223 {. type = PF_SRC_INET6_PREFIX, .off = _OUT(inet6_prefix), .cb = snl_attr_get_uint32 },
4224 };
4225 #undef _OUT
4226 SNL_DECLARE_PARSER(source_parser, struct genlmsghdr, snl_f_p_empty, ap_source);
4227
4228 int
pfctl_source_get(struct pfctl_handle * h,int id,pfctl_get_source_fn fn,void * arg)4229 pfctl_source_get(struct pfctl_handle *h, int id, pfctl_get_source_fn fn, void *arg)
4230 {
4231 struct snl_writer nw;
4232 struct snl_errmsg_data e = {};
4233 struct nlmsghdr *hdr;
4234 uint32_t seq_id;
4235 int family_id, error;
4236
4237 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4238 if (family_id == 0)
4239 return (ENOTSUP);
4240
4241 snl_init_writer(&h->ss, &nw);
4242 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SOURCE_NGET);
4243
4244 snl_add_msg_attr_u32(&nw, PF_SRC_ID, id);
4245
4246 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4247 return (ENXIO);
4248 seq_id = hdr->nlmsg_seq;
4249
4250 if (! snl_send_message(&h->ss, hdr))
4251 return (ENXIO);
4252
4253 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4254 struct pfctl_source src;
4255
4256 if (! snl_parse_nlmsg(&h->ss, hdr, &source_parser, &src))
4257 continue;
4258
4259 error = fn(&src, arg);
4260 if (error != 0) {
4261 e.error = error;
4262 break;
4263 }
4264 }
4265
4266 return (e.error);
4267 }
4268
4269 int
pfctl_source_clear(struct pfctl_handle * h,struct pfctl_source_clear * kill)4270 pfctl_source_clear(struct pfctl_handle *h, struct pfctl_source_clear *kill)
4271 {
4272 struct snl_writer nw;
4273 struct snl_errmsg_data e = {};
4274 struct nlmsghdr *hdr;
4275 uint32_t seq_id;
4276 int family_id;
4277
4278 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4279 if (family_id == 0)
4280 return (ENOTSUP);
4281
4282 snl_init_writer(&h->ss, &nw);
4283 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SOURCE_CLEAR);
4284
4285 snl_add_msg_attr_string(&nw, PF_SC_NAME, kill->name);
4286 snl_add_msg_attr_u32(&nw, PF_SC_ID, kill->id);
4287 snl_add_msg_attr_u32(&nw, PF_SC_RDOMAIN, kill->rdomain);
4288 snl_add_msg_attr_u8(&nw, PF_SC_AF, kill->af);
4289 snl_add_msg_attr_ip6(&nw, PF_SC_ADDR, &kill->addr.v6);
4290
4291 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4292 return (ENXIO);
4293 seq_id = hdr->nlmsg_seq;
4294
4295 if (! snl_send_message(&h->ss, hdr))
4296 return (ENXIO);
4297
4298 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4299 }
4300
4301 return (e.error);
4302 }
4303
4304 static const struct snl_hdr_parser *all_parsers[] = {
4305 &begin_addrs_parser,
4306 &clear_states_parser,
4307 &clr_addrs_parser,
4308 &creator_parser,
4309 &get_addr_parser,
4310 &get_addrs_parser,
4311 &get_limit_parser,
4312 &get_timeout_parser,
4313 &getrule_parser,
4314 &getrules_parser,
4315 &getstatus_parser,
4316 &nadd_parser,
4317 &natlook_parser,
4318 &ndel_parser,
4319 &ruleset_parser,
4320 &skey_parser,
4321 &source_parser,
4322 &sourcelim_parser,
4323 &speer_parser,
4324 &srcnode_parser,
4325 &state_parser,
4326 &statelim_parser,
4327 &table_add_addr_parser,
4328 &table_astats_parser,
4329 &table_del_addr_parser,
4330 &table_get_addr_parser,
4331 &table_set_addr_parser,
4332 &tstats_clr_parser,
4333 &tstats_parser,
4334 };
4335
4336 static void
_pfctl_verify_parsers(void)4337 _pfctl_verify_parsers(void)
4338 {
4339 SNL_VERIFY_PARSERS(all_parsers);
4340 }
4341