1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2021 Rubicon Communications, LLC (Netgate)
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33
34 #include <sys/ioctl.h>
35 #include <sys/nv.h>
36 #include <sys/queue.h>
37 #include <sys/types.h>
38
39 #include <net/if.h>
40 #include <net/pfvar.h>
41 #include <netinet/in.h>
42
43 #include <netpfil/pf/pf_nl.h>
44 #include <netlink/netlink.h>
45 #include <netlink/netlink_generic.h>
46 #include <netlink/netlink_snl.h>
47 #include <netlink/netlink_snl_generic.h>
48 #include <netlink/netlink_snl_route.h>
49
50 #include <assert.h>
51 #include <err.h>
52 #include <errno.h>
53 #include <fcntl.h>
54 #include <stdlib.h>
55 #include <string.h>
56
57 #include "libpfctl.h"
58
59 struct pfctl_handle {
60 int fd;
61 struct snl_state ss;
62 };
63
64 const char* PFCTL_SYNCOOKIES_MODE_NAMES[] = {
65 "never",
66 "always",
67 "adaptive"
68 };
69
70 static int _pfctl_clear_states(int , const struct pfctl_kill *,
71 unsigned int *, uint64_t);
72
73 struct pfctl_handle *
pfctl_open(const char * pf_device)74 pfctl_open(const char *pf_device)
75 {
76 struct pfctl_handle *h;
77
78 h = calloc(1, sizeof(struct pfctl_handle));
79 h->fd = -1;
80
81 h->fd = open(pf_device, O_RDWR);
82 if (h->fd < 0)
83 goto error;
84
85 if (!snl_init(&h->ss, NETLINK_GENERIC))
86 goto error;
87
88 return (h);
89 error:
90 close(h->fd);
91 snl_free(&h->ss);
92 free(h);
93
94 return (NULL);
95 }
96
97 void
pfctl_close(struct pfctl_handle * h)98 pfctl_close(struct pfctl_handle *h)
99 {
100 close(h->fd);
101 snl_free(&h->ss);
102 free(h);
103 }
104
105 int
pfctl_fd(struct pfctl_handle * h)106 pfctl_fd(struct pfctl_handle *h)
107 {
108 return (h->fd);
109 }
110
111 static int
pfctl_do_netlink_cmd(struct pfctl_handle * h,uint cmd)112 pfctl_do_netlink_cmd(struct pfctl_handle *h, uint cmd)
113 {
114 struct snl_errmsg_data e = {};
115 struct snl_writer nw;
116 struct nlmsghdr *hdr;
117 uint32_t seq_id;
118 int family_id;
119
120 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
121 if (family_id == 0)
122 return (ENOTSUP);
123
124 snl_init_writer(&h->ss, &nw);
125 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
126
127 hdr = snl_finalize_msg(&nw);
128 if (hdr == NULL)
129 return (ENOMEM);
130 seq_id = hdr->nlmsg_seq;
131
132 snl_send_message(&h->ss, hdr);
133
134 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
135 }
136
137 return (e.error);
138 }
139
140 static int
pfctl_do_ioctl(int dev,uint cmd,size_t size,nvlist_t ** nvl)141 pfctl_do_ioctl(int dev, uint cmd, size_t size, nvlist_t **nvl)
142 {
143 struct pfioc_nv nv;
144 void *data;
145 size_t nvlen;
146 int ret;
147
148 data = nvlist_pack(*nvl, &nvlen);
149 if (nvlen > size)
150 size = nvlen;
151
152 retry:
153 nv.data = malloc(size);
154 if (nv.data == NULL) {
155 ret = ENOMEM;
156 goto out;
157 }
158
159 memcpy(nv.data, data, nvlen);
160
161 nv.len = nvlen;
162 nv.size = size;
163
164 ret = ioctl(dev, cmd, &nv);
165 if (ret == -1 && errno == ENOSPC) {
166 size *= 2;
167 free(nv.data);
168 goto retry;
169 }
170
171 nvlist_destroy(*nvl);
172 *nvl = NULL;
173
174 if (ret == 0) {
175 *nvl = nvlist_unpack(nv.data, nv.len, 0);
176 if (*nvl == NULL) {
177 ret = EIO;
178 goto out;
179 }
180 } else {
181 ret = errno;
182 }
183
184 out:
185 free(data);
186 free(nv.data);
187
188 return (ret);
189 }
190
191 static void
pf_nvuint_8_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint8_t * numbers,size_t * nelems)192 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems,
193 uint8_t *numbers, size_t *nelems)
194 {
195 const uint64_t *tmp;
196 size_t elems;
197
198 tmp = nvlist_get_number_array(nvl, name, &elems);
199 assert(elems <= maxelems);
200
201 for (size_t i = 0; i < elems; i++)
202 numbers[i] = tmp[i];
203
204 if (nelems)
205 *nelems = elems;
206 }
207
208 static void
pf_nvuint_16_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint16_t * numbers,size_t * nelems)209 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems,
210 uint16_t *numbers, size_t *nelems)
211 {
212 const uint64_t *tmp;
213 size_t elems;
214
215 tmp = nvlist_get_number_array(nvl, name, &elems);
216 assert(elems <= maxelems);
217
218 for (size_t i = 0; i < elems; i++)
219 numbers[i] = tmp[i];
220
221 if (nelems)
222 *nelems = elems;
223 }
224
225 static void
pf_nvuint_32_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint32_t * numbers,size_t * nelems)226 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems,
227 uint32_t *numbers, size_t *nelems)
228 {
229 const uint64_t *tmp;
230 size_t elems;
231
232 tmp = nvlist_get_number_array(nvl, name, &elems);
233
234 for (size_t i = 0; i < elems && i < maxelems; i++)
235 numbers[i] = tmp[i];
236
237 if (nelems)
238 *nelems = elems;
239 }
240
241 static void
pf_nvuint_64_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint64_t * numbers,size_t * nelems)242 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems,
243 uint64_t *numbers, size_t *nelems)
244 {
245 const uint64_t *tmp;
246 size_t elems;
247
248 tmp = nvlist_get_number_array(nvl, name, &elems);
249 assert(elems <= maxelems);
250
251 for (size_t i = 0; i < elems; i++)
252 numbers[i] = tmp[i];
253
254 if (nelems)
255 *nelems = elems;
256 }
257
258 int
pfctl_startstop(struct pfctl_handle * h,int start)259 pfctl_startstop(struct pfctl_handle *h, int start)
260 {
261 return (pfctl_do_netlink_cmd(h, start ? PFNL_CMD_START : PFNL_CMD_STOP));
262 }
263
264 static void
_pfctl_get_status_counters(const nvlist_t * nvl,struct pfctl_status_counters * counters)265 _pfctl_get_status_counters(const nvlist_t *nvl,
266 struct pfctl_status_counters *counters)
267 {
268 const uint64_t *ids, *counts;
269 const char *const *names;
270 size_t id_len, counter_len, names_len;
271
272 ids = nvlist_get_number_array(nvl, "ids", &id_len);
273 counts = nvlist_get_number_array(nvl, "counters", &counter_len);
274 names = nvlist_get_string_array(nvl, "names", &names_len);
275 assert(id_len == counter_len);
276 assert(counter_len == names_len);
277
278 TAILQ_INIT(counters);
279
280 for (size_t i = 0; i < id_len; i++) {
281 struct pfctl_status_counter *c;
282
283 c = malloc(sizeof(*c));
284 if (c == NULL)
285 continue;
286
287 c->id = ids[i];
288 c->counter = counts[i];
289 c->name = strdup(names[i]);
290
291 TAILQ_INSERT_TAIL(counters, c, entry);
292 }
293 }
294
295 #define _OUT(_field) offsetof(struct pfctl_status_counter, _field)
296 static const struct snl_attr_parser ap_counter[] = {
297 { .type = PF_C_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_uint64 },
298 { .type = PF_C_NAME, .off = _OUT(name), .cb = snl_attr_get_string },
299 { .type = PF_C_ID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
300 };
301 SNL_DECLARE_ATTR_PARSER(counter_parser, ap_counter);
302 #undef _OUT
303
304 static bool
snl_attr_get_counters(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)305 snl_attr_get_counters(struct snl_state *ss, struct nlattr *nla,
306 const void *arg __unused, void *target)
307 {
308 struct pfctl_status_counter counter = {};
309 struct pfctl_status_counter *c;
310 bool error;
311
312 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &counter_parser, &counter);
313 if (! error)
314 return (error);
315
316 c = malloc(sizeof(*c));
317 if (c == NULL)
318 return (false);
319
320 c->id = counter.id;
321 c->counter = counter.counter;
322 c->name = strdup(counter.name);
323
324 TAILQ_INSERT_TAIL((struct pfctl_status_counters *)target, c, entry);
325
326 return (error);
327 }
328
329 struct snl_uint64_array {
330 uint64_t *array;
331 size_t count;
332 size_t max;
333 };
334 static bool
snl_attr_get_uint64_element(struct snl_state * ss,struct nlattr * nla,const void * arg,void * target)335 snl_attr_get_uint64_element(struct snl_state *ss, struct nlattr *nla,
336 const void *arg, void *target)
337 {
338 bool error;
339 uint64_t value;
340 struct snl_uint64_array *t = (struct snl_uint64_array *)target;
341
342 if (t->count >= t->max)
343 return (false);
344
345 error = snl_attr_get_uint64(ss, nla, arg, &value);
346 if (! error)
347 return (error);
348
349 t->array[t->count++] = value;
350
351 return (true);
352 }
353
354 static const struct snl_attr_parser ap_array[] = {
355 { .cb = snl_attr_get_uint64_element },
356 };
357 SNL_DECLARE_ATTR_PARSER(array_parser, ap_array);
358 static bool
snl_attr_get_uint64_array(struct snl_state * ss,struct nlattr * nla,const void * arg,void * target)359 snl_attr_get_uint64_array(struct snl_state *ss, struct nlattr *nla,
360 const void *arg, void *target)
361 {
362 struct snl_uint64_array a = {
363 .array = target,
364 .count = 0,
365 .max = (size_t)arg,
366 };
367 bool error;
368
369 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a);
370 if (! error)
371 return (error);
372
373 return (true);
374 }
375
376 #define _OUT(_field) offsetof(struct pfctl_status, _field)
377 static const struct snl_attr_parser ap_getstatus[] = {
378 { .type = PF_GS_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
379 { .type = PF_GS_RUNNING, .off = _OUT(running), .cb = snl_attr_get_bool },
380 { .type = PF_GS_SINCE, .off = _OUT(since), .cb = snl_attr_get_uint32 },
381 { .type = PF_GS_DEBUG, .off = _OUT(debug), .cb = snl_attr_get_uint32 },
382 { .type = PF_GS_HOSTID, .off = _OUT(hostid), .cb = snl_attr_get_uint32 },
383 { .type = PF_GS_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
384 { .type = PF_GS_SRC_NODES, .off = _OUT(src_nodes), .cb = snl_attr_get_uint32 },
385 { .type = PF_GS_REASSEMBLE, .off = _OUT(reass), .cb = snl_attr_get_uint32 },
386 { .type = PF_GS_SYNCOOKIES_ACTIVE, .off = _OUT(syncookies_active), .cb = snl_attr_get_uint32 },
387 { .type = PF_GS_COUNTERS, .off = _OUT(counters), .cb = snl_attr_get_counters },
388 { .type = PF_GS_LCOUNTERS, .off = _OUT(lcounters), .cb = snl_attr_get_counters },
389 { .type = PF_GS_FCOUNTERS, .off = _OUT(fcounters), .cb = snl_attr_get_counters },
390 { .type = PF_GS_SCOUNTERS, .off = _OUT(scounters), .cb = snl_attr_get_counters },
391 { .type = PF_GS_CHKSUM, .off = _OUT(pf_chksum), .arg_u32 = PF_MD5_DIGEST_LENGTH, .cb = snl_attr_get_bytes },
392 { .type = PF_GS_BCOUNTERS, .off = _OUT(bcounters), .arg_u32 = 2 * 2, .cb = snl_attr_get_uint64_array },
393 { .type = PF_GS_PCOUNTERS, .off = _OUT(pcounters), .arg_u32 = 2 * 2 * 2, .cb = snl_attr_get_uint64_array },
394 };
395 static struct snl_field_parser fp_getstatus[] = {};
396 SNL_DECLARE_PARSER(getstatus_parser, struct genlmsghdr, fp_getstatus, ap_getstatus);
397 #undef _OUT
398
399 struct pfctl_status *
pfctl_get_status_h(struct pfctl_handle * h __unused)400 pfctl_get_status_h(struct pfctl_handle *h __unused)
401 {
402 struct pfctl_status *status;
403 struct snl_errmsg_data e = {};
404 struct nlmsghdr *hdr;
405 struct snl_writer nw;
406 uint32_t seq_id;
407 int family_id;
408
409 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
410 if (family_id == 0)
411 return (NULL);
412
413 snl_init_writer(&h->ss, &nw);
414 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_STATUS);
415 hdr->nlmsg_flags |= NLM_F_DUMP;
416
417 hdr = snl_finalize_msg(&nw);
418 if (hdr == NULL) {
419 return (NULL);
420 }
421
422 seq_id = hdr->nlmsg_seq;
423 if (! snl_send_message(&h->ss, hdr))
424 return (NULL);
425
426 status = calloc(1, sizeof(*status));
427 if (status == NULL)
428 return (NULL);
429 TAILQ_INIT(&status->counters);
430 TAILQ_INIT(&status->lcounters);
431 TAILQ_INIT(&status->fcounters);
432 TAILQ_INIT(&status->scounters);
433
434 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
435 if (! snl_parse_nlmsg(&h->ss, hdr, &getstatus_parser, status))
436 continue;
437 }
438
439 return (status);
440 }
441
442 struct pfctl_status *
pfctl_get_status(int dev)443 pfctl_get_status(int dev)
444 {
445 struct pfctl_status *status;
446 nvlist_t *nvl;
447 size_t len;
448 const void *chksum;
449
450 status = calloc(1, sizeof(*status));
451 if (status == NULL)
452 return (NULL);
453
454 nvl = nvlist_create(0);
455
456 if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) {
457 nvlist_destroy(nvl);
458 free(status);
459 return (NULL);
460 }
461
462 status->running = nvlist_get_bool(nvl, "running");
463 status->since = nvlist_get_number(nvl, "since");
464 status->debug = nvlist_get_number(nvl, "debug");
465 status->hostid = ntohl(nvlist_get_number(nvl, "hostid"));
466 status->states = nvlist_get_number(nvl, "states");
467 status->src_nodes = nvlist_get_number(nvl, "src_nodes");
468 status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active");
469 status->reass = nvlist_get_number(nvl, "reass");
470
471 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"),
472 IFNAMSIZ);
473 chksum = nvlist_get_binary(nvl, "chksum", &len);
474 assert(len == PF_MD5_DIGEST_LENGTH);
475 memcpy(status->pf_chksum, chksum, len);
476
477 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"),
478 &status->counters);
479 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"),
480 &status->lcounters);
481 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"),
482 &status->fcounters);
483 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"),
484 &status->scounters);
485
486 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2,
487 (uint64_t *)status->pcounters, NULL);
488 pf_nvuint_64_array(nvl, "bcounters", 2 * 2,
489 (uint64_t *)status->bcounters, NULL);
490
491 nvlist_destroy(nvl);
492
493 return (status);
494 }
495 int
pfctl_clear_status(struct pfctl_handle * h)496 pfctl_clear_status(struct pfctl_handle *h)
497 {
498 return (pfctl_do_netlink_cmd(h, PFNL_CMD_CLEAR_STATUS));
499 }
500
501 static uint64_t
_pfctl_status_counter(struct pfctl_status_counters * counters,uint64_t id)502 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id)
503 {
504 struct pfctl_status_counter *c;
505
506 TAILQ_FOREACH(c, counters, entry) {
507 if (c->id == id)
508 return (c->counter);
509 }
510
511 return (0);
512 }
513
514 uint64_t
pfctl_status_counter(struct pfctl_status * status,int id)515 pfctl_status_counter(struct pfctl_status *status, int id)
516 {
517 return (_pfctl_status_counter(&status->counters, id));
518 }
519
520 uint64_t
pfctl_status_lcounter(struct pfctl_status * status,int id)521 pfctl_status_lcounter(struct pfctl_status *status, int id)
522 {
523 return (_pfctl_status_counter(&status->lcounters, id));
524 }
525
526 uint64_t
pfctl_status_fcounter(struct pfctl_status * status,int id)527 pfctl_status_fcounter(struct pfctl_status *status, int id)
528 {
529 return (_pfctl_status_counter(&status->fcounters, id));
530 }
531
532 uint64_t
pfctl_status_scounter(struct pfctl_status * status,int id)533 pfctl_status_scounter(struct pfctl_status *status, int id)
534 {
535 return (_pfctl_status_counter(&status->scounters, id));
536 }
537
538 void
pfctl_free_status(struct pfctl_status * status)539 pfctl_free_status(struct pfctl_status *status)
540 {
541 struct pfctl_status_counter *c, *tmp;
542
543 if (status == NULL)
544 return;
545
546 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) {
547 free(c->name);
548 free(c);
549 }
550 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) {
551 free(c->name);
552 free(c);
553 }
554 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) {
555 free(c->name);
556 free(c);
557 }
558 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) {
559 free(c->name);
560 free(c);
561 }
562
563 free(status);
564 }
565
566 static void
pfctl_nv_add_addr(nvlist_t * nvparent,const char * name,const struct pf_addr * addr)567 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name,
568 const struct pf_addr *addr)
569 {
570 nvlist_t *nvl = nvlist_create(0);
571
572 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr));
573
574 nvlist_add_nvlist(nvparent, name, nvl);
575 nvlist_destroy(nvl);
576 }
577
578 static void
pf_nvaddr_to_addr(const nvlist_t * nvl,struct pf_addr * addr)579 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr)
580 {
581 size_t len;
582 const void *data;
583
584 data = nvlist_get_binary(nvl, "addr", &len);
585 assert(len == sizeof(struct pf_addr));
586 memcpy(addr, data, len);
587 }
588
589 static void
pfctl_nv_add_addr_wrap(nvlist_t * nvparent,const char * name,const struct pf_addr_wrap * addr)590 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name,
591 const struct pf_addr_wrap *addr)
592 {
593 nvlist_t *nvl = nvlist_create(0);
594
595 nvlist_add_number(nvl, "type", addr->type);
596 nvlist_add_number(nvl, "iflags", addr->iflags);
597 if (addr->type == PF_ADDR_DYNIFTL)
598 nvlist_add_string(nvl, "ifname", addr->v.ifname);
599 if (addr->type == PF_ADDR_TABLE)
600 nvlist_add_string(nvl, "tblname", addr->v.tblname);
601 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr);
602 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask);
603
604 nvlist_add_nvlist(nvparent, name, nvl);
605 nvlist_destroy(nvl);
606 }
607
608 static void
pf_nvaddr_wrap_to_addr_wrap(const nvlist_t * nvl,struct pf_addr_wrap * addr)609 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr)
610 {
611 bzero(addr, sizeof(*addr));
612
613 addr->type = nvlist_get_number(nvl, "type");
614 addr->iflags = nvlist_get_number(nvl, "iflags");
615 if (addr->type == PF_ADDR_DYNIFTL) {
616 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"),
617 IFNAMSIZ);
618 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt");
619 }
620 if (addr->type == PF_ADDR_TABLE) {
621 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"),
622 PF_TABLE_NAME_SIZE);
623 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt");
624 }
625
626 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr);
627 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask);
628 }
629
630 static void
pfctl_nv_add_rule_addr(nvlist_t * nvparent,const char * name,const struct pf_rule_addr * addr)631 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name,
632 const struct pf_rule_addr *addr)
633 {
634 uint64_t ports[2];
635 nvlist_t *nvl = nvlist_create(0);
636
637 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr);
638 ports[0] = addr->port[0];
639 ports[1] = addr->port[1];
640 nvlist_add_number_array(nvl, "port", ports, 2);
641 nvlist_add_number(nvl, "neg", addr->neg);
642 nvlist_add_number(nvl, "port_op", addr->port_op);
643
644 nvlist_add_nvlist(nvparent, name, nvl);
645 nvlist_destroy(nvl);
646 }
647
648 static void
pf_nvrule_addr_to_rule_addr(const nvlist_t * nvl,struct pf_rule_addr * addr)649 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr)
650 {
651 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr);
652
653 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL);
654 addr->neg = nvlist_get_number(nvl, "neg");
655 addr->port_op = nvlist_get_number(nvl, "port_op");
656 }
657
658 static void
pf_nvmape_to_mape(const nvlist_t * nvl,struct pf_mape_portset * mape)659 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape)
660 {
661 mape->offset = nvlist_get_number(nvl, "offset");
662 mape->psidlen = nvlist_get_number(nvl, "psidlen");
663 mape->psid = nvlist_get_number(nvl, "psid");
664 }
665
666 static void
pf_nvpool_to_pool(const nvlist_t * nvl,struct pfctl_pool * pool)667 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool)
668 {
669 size_t len;
670 const void *data;
671
672 data = nvlist_get_binary(nvl, "key", &len);
673 assert(len == sizeof(pool->key));
674 memcpy(&pool->key, data, len);
675
676 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter);
677
678 pool->tblidx = nvlist_get_number(nvl, "tblidx");
679 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL);
680 pool->opts = nvlist_get_number(nvl, "opts");
681
682 if (nvlist_exists_nvlist(nvl, "mape"))
683 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape);
684 }
685
686 static void
pf_nvrule_uid_to_rule_uid(const nvlist_t * nvl,struct pf_rule_uid * uid)687 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid)
688 {
689 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL);
690 uid->op = nvlist_get_number(nvl, "op");
691 }
692
693 static void
pf_nvdivert_to_divert(const nvlist_t * nvl,struct pfctl_rule * rule)694 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule)
695 {
696 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr);
697 rule->divert.port = nvlist_get_number(nvl, "port");
698 }
699
700 static void
pf_nvrule_to_rule(const nvlist_t * nvl,struct pfctl_rule * rule)701 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule)
702 {
703 const uint64_t *skip;
704 const char *const *labels;
705 size_t skipcount, labelcount;
706
707 rule->nr = nvlist_get_number(nvl, "nr");
708
709 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src);
710 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst);
711
712 skip = nvlist_get_number_array(nvl, "skip", &skipcount);
713 assert(skip);
714 assert(skipcount == PF_SKIP_COUNT);
715 for (int i = 0; i < PF_SKIP_COUNT; i++)
716 rule->skip[i].nr = skip[i];
717
718 labels = nvlist_get_string_array(nvl, "labels", &labelcount);
719 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
720 for (size_t i = 0; i < labelcount; i++)
721 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
722 rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
723 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
724 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
725 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE);
726 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
727 PF_TAG_NAME_SIZE);
728 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
729 PF_TAG_NAME_SIZE);
730
731 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"),
732 PF_TABLE_NAME_SIZE);
733
734 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool);
735
736 rule->evaluations = nvlist_get_number(nvl, "evaluations");
737 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL);
738 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL);
739
740 if (nvlist_exists_number(nvl, "timestamp")) {
741 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
742 }
743
744 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint");
745
746 rule->rtableid = nvlist_get_number(nvl, "rtableid");
747 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL);
748 rule->max_states = nvlist_get_number(nvl, "max_states");
749 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes");
750 rule->max_src_states = nvlist_get_number(nvl, "max_src_states");
751 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn");
752 rule->max_src_conn_rate.limit =
753 nvlist_get_number(nvl, "max_src_conn_rate.limit");
754 rule->max_src_conn_rate.seconds =
755 nvlist_get_number(nvl, "max_src_conn_rate.seconds");
756 rule->qid = nvlist_get_number(nvl, "qid");
757 rule->pqid = nvlist_get_number(nvl, "pqid");
758 rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
759 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe");
760 rule->free_flags = nvlist_get_number(nvl, "dnflags");
761 rule->prob = nvlist_get_number(nvl, "prob");
762 rule->cuid = nvlist_get_number(nvl, "cuid");
763 rule->cpid = nvlist_get_number(nvl, "cpid");
764
765 rule->return_icmp = nvlist_get_number(nvl, "return_icmp");
766 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6");
767 rule->max_mss = nvlist_get_number(nvl, "max_mss");
768 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags");
769
770 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid);
771 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"),
772 (struct pf_rule_uid *)&rule->gid);
773
774 rule->rule_flag = nvlist_get_number(nvl, "rule_flag");
775 rule->action = nvlist_get_number(nvl, "action");
776 rule->direction = nvlist_get_number(nvl, "direction");
777 rule->log = nvlist_get_number(nvl, "log");
778 rule->logif = nvlist_get_number(nvl, "logif");
779 rule->quick = nvlist_get_number(nvl, "quick");
780 rule->ifnot = nvlist_get_number(nvl, "ifnot");
781 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not");
782 rule->natpass = nvlist_get_number(nvl, "natpass");
783
784 rule->keep_state = nvlist_get_number(nvl, "keep_state");
785 rule->af = nvlist_get_number(nvl, "af");
786 rule->proto = nvlist_get_number(nvl, "proto");
787 rule->type = nvlist_get_number(nvl, "type");
788 rule->code = nvlist_get_number(nvl, "code");
789 rule->flags = nvlist_get_number(nvl, "flags");
790 rule->flagset = nvlist_get_number(nvl, "flagset");
791 rule->min_ttl = nvlist_get_number(nvl, "min_ttl");
792 rule->allow_opts = nvlist_get_number(nvl, "allow_opts");
793 rule->rt = nvlist_get_number(nvl, "rt");
794 rule->return_ttl = nvlist_get_number(nvl, "return_ttl");
795 rule->tos = nvlist_get_number(nvl, "tos");
796 rule->set_tos = nvlist_get_number(nvl, "set_tos");
797 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
798 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
799
800 rule->flush = nvlist_get_number(nvl, "flush");
801 rule->prio = nvlist_get_number(nvl, "prio");
802 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL);
803
804 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule);
805
806 rule->states_cur = nvlist_get_number(nvl, "states_cur");
807 rule->states_tot = nvlist_get_number(nvl, "states_tot");
808 rule->src_nodes = nvlist_get_number(nvl, "src_nodes");
809 }
810
811 static void
pfctl_nveth_addr_to_eth_addr(const nvlist_t * nvl,struct pfctl_eth_addr * addr)812 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr)
813 {
814 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 };
815 size_t len;
816 const void *data;
817
818 data = nvlist_get_binary(nvl, "addr", &len);
819 assert(len == sizeof(addr->addr));
820 memcpy(addr->addr, data, sizeof(addr->addr));
821
822 data = nvlist_get_binary(nvl, "mask", &len);
823 assert(len == sizeof(addr->mask));
824 memcpy(addr->mask, data, sizeof(addr->mask));
825
826 addr->neg = nvlist_get_bool(nvl, "neg");
827
828 /* To make checks for 'is this address set?' easier. */
829 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0;
830 }
831
832 static nvlist_t *
pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr * addr)833 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr)
834 {
835 nvlist_t *nvl;
836
837 nvl = nvlist_create(0);
838 if (nvl == NULL)
839 return (NULL);
840
841 nvlist_add_bool(nvl, "neg", addr->neg);
842 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN);
843 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN);
844
845 return (nvl);
846 }
847
848 static void
pfctl_nveth_rule_to_eth_rule(const nvlist_t * nvl,struct pfctl_eth_rule * rule)849 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule)
850 {
851 const char *const *labels;
852 size_t labelcount, i;
853
854 rule->nr = nvlist_get_number(nvl, "nr");
855 rule->quick = nvlist_get_bool(nvl, "quick");
856 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
857 rule->ifnot = nvlist_get_bool(nvl, "ifnot");
858 rule->direction = nvlist_get_number(nvl, "direction");
859 rule->proto = nvlist_get_number(nvl, "proto");
860 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
861 PF_TAG_NAME_SIZE);
862 rule->match_tag = nvlist_get_number(nvl, "match_tag");
863 rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not");
864
865 labels = nvlist_get_string_array(nvl, "labels", &labelcount);
866 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
867 for (i = 0; i < labelcount; i++)
868 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
869 rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
870
871 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"),
872 &rule->src);
873 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"),
874 &rule->dst);
875
876 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"),
877 &rule->ipsrc);
878 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"),
879 &rule->ipdst);
880
881 rule->evaluations = nvlist_get_number(nvl, "evaluations");
882 rule->packets[0] = nvlist_get_number(nvl, "packets-in");
883 rule->packets[1] = nvlist_get_number(nvl, "packets-out");
884 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in");
885 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out");
886
887 if (nvlist_exists_number(nvl, "timestamp")) {
888 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
889 }
890
891 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
892 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
893 PF_TAG_NAME_SIZE);
894
895 rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
896 rule->dnflags = nvlist_get_number(nvl, "dnflags");
897
898 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
899 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
900
901 strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"),
902 IFNAMSIZ);
903
904 rule->action = nvlist_get_number(nvl, "action");
905 }
906
907 int
pfctl_get_eth_rulesets_info(int dev,struct pfctl_eth_rulesets_info * ri,const char * path)908 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri,
909 const char *path)
910 {
911 nvlist_t *nvl;
912 int ret;
913
914 bzero(ri, sizeof(*ri));
915
916 nvl = nvlist_create(0);
917 nvlist_add_string(nvl, "path", path);
918
919 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0)
920 goto out;
921
922 ri->nr = nvlist_get_number(nvl, "nr");
923
924 out:
925 nvlist_destroy(nvl);
926 return (ret);
927 }
928
929 int
pfctl_get_eth_ruleset(int dev,const char * path,int nr,struct pfctl_eth_ruleset_info * ri)930 pfctl_get_eth_ruleset(int dev, const char *path, int nr,
931 struct pfctl_eth_ruleset_info *ri)
932 {
933 nvlist_t *nvl;
934 int ret;
935
936 bzero(ri, sizeof(*ri));
937
938 nvl = nvlist_create(0);
939 nvlist_add_string(nvl, "path", path);
940 nvlist_add_number(nvl, "nr", nr);
941
942 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0)
943 goto out;
944
945 ri->nr = nvlist_get_number(nvl, "nr");
946 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN);
947 strlcpy(ri->name, nvlist_get_string(nvl, "name"),
948 PF_ANCHOR_NAME_SIZE);
949
950 out:
951 nvlist_destroy(nvl);
952 return (ret);
953 }
954
955 int
pfctl_get_eth_rules_info(int dev,struct pfctl_eth_rules_info * rules,const char * path)956 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules,
957 const char *path)
958 {
959 nvlist_t *nvl;
960 int ret;
961
962 bzero(rules, sizeof(*rules));
963
964 nvl = nvlist_create(0);
965 nvlist_add_string(nvl, "anchor", path);
966
967 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0)
968 goto out;
969
970 rules->nr = nvlist_get_number(nvl, "nr");
971 rules->ticket = nvlist_get_number(nvl, "ticket");
972
973 out:
974 nvlist_destroy(nvl);
975 return (ret);
976 }
977
978 int
pfctl_get_eth_rule(int dev,uint32_t nr,uint32_t ticket,const char * path,struct pfctl_eth_rule * rule,bool clear,char * anchor_call)979 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket,
980 const char *path, struct pfctl_eth_rule *rule, bool clear,
981 char *anchor_call)
982 {
983 nvlist_t *nvl;
984 int ret;
985
986 nvl = nvlist_create(0);
987
988 nvlist_add_string(nvl, "anchor", path);
989 nvlist_add_number(nvl, "ticket", ticket);
990 nvlist_add_number(nvl, "nr", nr);
991 nvlist_add_bool(nvl, "clear", clear);
992
993 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0)
994 goto out;
995
996 pfctl_nveth_rule_to_eth_rule(nvl, rule);
997
998 if (anchor_call)
999 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1000 MAXPATHLEN);
1001
1002 out:
1003 nvlist_destroy(nvl);
1004 return (ret);
1005 }
1006
1007 int
pfctl_add_eth_rule(int dev,const struct pfctl_eth_rule * r,const char * anchor,const char * anchor_call,uint32_t ticket)1008 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor,
1009 const char *anchor_call, uint32_t ticket)
1010 {
1011 struct pfioc_nv nv;
1012 nvlist_t *nvl, *addr;
1013 void *packed;
1014 int error = 0;
1015 size_t labelcount, size;
1016
1017 nvl = nvlist_create(0);
1018
1019 nvlist_add_number(nvl, "ticket", ticket);
1020 nvlist_add_string(nvl, "anchor", anchor);
1021 nvlist_add_string(nvl, "anchor_call", anchor_call);
1022
1023 nvlist_add_number(nvl, "nr", r->nr);
1024 nvlist_add_bool(nvl, "quick", r->quick);
1025 nvlist_add_string(nvl, "ifname", r->ifname);
1026 nvlist_add_bool(nvl, "ifnot", r->ifnot);
1027 nvlist_add_number(nvl, "direction", r->direction);
1028 nvlist_add_number(nvl, "proto", r->proto);
1029 nvlist_add_string(nvl, "match_tagname", r->match_tagname);
1030 nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not);
1031
1032 addr = pfctl_eth_addr_to_nveth_addr(&r->src);
1033 if (addr == NULL) {
1034 nvlist_destroy(nvl);
1035 return (ENOMEM);
1036 }
1037 nvlist_add_nvlist(nvl, "src", addr);
1038 nvlist_destroy(addr);
1039
1040 addr = pfctl_eth_addr_to_nveth_addr(&r->dst);
1041 if (addr == NULL) {
1042 nvlist_destroy(nvl);
1043 return (ENOMEM);
1044 }
1045 nvlist_add_nvlist(nvl, "dst", addr);
1046 nvlist_destroy(addr);
1047
1048 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc);
1049 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst);
1050
1051 labelcount = 0;
1052 while (labelcount < PF_RULE_MAX_LABEL_COUNT &&
1053 r->label[labelcount][0] != 0) {
1054 nvlist_append_string_array(nvl, "labels",
1055 r->label[labelcount]);
1056 labelcount++;
1057 }
1058 nvlist_add_number(nvl, "ridentifier", r->ridentifier);
1059
1060 nvlist_add_string(nvl, "qname", r->qname);
1061 nvlist_add_string(nvl, "tagname", r->tagname);
1062 nvlist_add_number(nvl, "dnpipe", r->dnpipe);
1063 nvlist_add_number(nvl, "dnflags", r->dnflags);
1064
1065 nvlist_add_string(nvl, "bridge_to", r->bridge_to);
1066
1067 nvlist_add_number(nvl, "action", r->action);
1068
1069 packed = nvlist_pack(nvl, &size);
1070 if (packed == NULL) {
1071 nvlist_destroy(nvl);
1072 return (ENOMEM);
1073 }
1074
1075 nv.len = size;
1076 nv.size = size;
1077 nv.data = packed;
1078
1079 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0)
1080 error = errno;
1081
1082 free(packed);
1083 nvlist_destroy(nvl);
1084
1085 return (error);
1086 }
1087
1088 static void
snl_add_msg_attr_addr_wrap(struct snl_writer * nw,uint32_t type,const struct pf_addr_wrap * addr)1089 snl_add_msg_attr_addr_wrap(struct snl_writer *nw, uint32_t type, const struct pf_addr_wrap *addr)
1090 {
1091 int off;
1092
1093 off = snl_add_msg_attr_nested(nw, type);
1094
1095 snl_add_msg_attr_ip6(nw, PF_AT_ADDR, &addr->v.a.addr.v6);
1096 snl_add_msg_attr_ip6(nw, PF_AT_MASK, &addr->v.a.mask.v6);
1097
1098 if (addr->type == PF_ADDR_DYNIFTL)
1099 snl_add_msg_attr_string(nw, PF_AT_IFNAME, addr->v.ifname);
1100 if (addr->type == PF_ADDR_TABLE)
1101 snl_add_msg_attr_string(nw, PF_AT_TABLENAME, addr->v.tblname);
1102 snl_add_msg_attr_u8(nw, PF_AT_TYPE, addr->type);
1103 snl_add_msg_attr_u8(nw, PF_AT_IFLAGS, addr->iflags);
1104
1105 snl_end_attr_nested(nw, off);
1106 }
1107
1108 static void
snl_add_msg_attr_pool_addr(struct snl_writer * nw,uint32_t type,const struct pf_pooladdr * pa)1109 snl_add_msg_attr_pool_addr(struct snl_writer *nw, uint32_t type, const struct pf_pooladdr *pa)
1110 {
1111 int off;
1112
1113 off = snl_add_msg_attr_nested(nw, type);
1114
1115 snl_add_msg_attr_string(nw, PF_PA_IFNAME, pa->ifname);
1116 snl_add_msg_attr_addr_wrap(nw, PF_PA_ADDR, &pa->addr);
1117
1118 snl_end_attr_nested(nw, off);
1119 }
1120
1121 static void
snl_add_msg_attr_rule_addr(struct snl_writer * nw,uint32_t type,const struct pf_rule_addr * addr)1122 snl_add_msg_attr_rule_addr(struct snl_writer *nw, uint32_t type, const struct pf_rule_addr *addr)
1123 {
1124 int off;
1125
1126 off = snl_add_msg_attr_nested(nw, type);
1127
1128 snl_add_msg_attr_addr_wrap(nw, PF_RAT_ADDR, &addr->addr);
1129 snl_add_msg_attr_u16(nw, PF_RAT_SRC_PORT, addr->port[0]);
1130 snl_add_msg_attr_u16(nw, PF_RAT_DST_PORT, addr->port[1]);
1131 snl_add_msg_attr_u8(nw, PF_RAT_NEG, addr->neg);
1132 snl_add_msg_attr_u8(nw, PF_RAT_OP, addr->port_op);
1133
1134 snl_end_attr_nested(nw, off);
1135 }
1136
1137 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])1138 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])
1139 {
1140 int off, i = 0;
1141
1142 off = snl_add_msg_attr_nested(nw, type);
1143
1144 while (i < PF_RULE_MAX_LABEL_COUNT &&
1145 labels[i][0] != 0) {
1146 snl_add_msg_attr_string(nw, PF_LT_LABEL, labels[i]);
1147 i++;
1148 }
1149
1150 snl_end_attr_nested(nw, off);
1151 }
1152
1153 static void
snl_add_msg_attr_mape(struct snl_writer * nw,uint32_t type,const struct pf_mape_portset * me)1154 snl_add_msg_attr_mape(struct snl_writer *nw, uint32_t type, const struct pf_mape_portset *me)
1155 {
1156 int off;
1157
1158 off = snl_add_msg_attr_nested(nw, type);
1159
1160 snl_add_msg_attr_u8(nw, PF_MET_OFFSET, me->offset);
1161 snl_add_msg_attr_u8(nw, PF_MET_PSID_LEN, me->psidlen);
1162 snl_add_msg_attr_u16(nw, PF_MET_PSID, me->psid);
1163
1164 snl_end_attr_nested(nw, off);
1165 }
1166
1167 static void
snl_add_msg_attr_rpool(struct snl_writer * nw,uint32_t type,const struct pfctl_pool * pool)1168 snl_add_msg_attr_rpool(struct snl_writer *nw, uint32_t type, const struct pfctl_pool *pool)
1169 {
1170 int off;
1171
1172 off = snl_add_msg_attr_nested(nw, type);
1173
1174 snl_add_msg_attr(nw, PF_PT_KEY, sizeof(pool->key), &pool->key);
1175 snl_add_msg_attr_ip6(nw, PF_PT_COUNTER, &pool->counter.v6);
1176 snl_add_msg_attr_u32(nw, PF_PT_TBLIDX, pool->tblidx);
1177 snl_add_msg_attr_u16(nw, PF_PT_PROXY_SRC_PORT, pool->proxy_port[0]);
1178 snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]);
1179 snl_add_msg_attr_u8(nw, PF_PT_OPTS, pool->opts);
1180 snl_add_msg_attr_mape(nw, PF_PT_MAPE, &pool->mape);
1181
1182 snl_end_attr_nested(nw, off);
1183 }
1184
1185 static void
snl_add_msg_attr_timeouts(struct snl_writer * nw,uint32_t type,const uint32_t * timeouts)1186 snl_add_msg_attr_timeouts(struct snl_writer *nw, uint32_t type, const uint32_t *timeouts)
1187 {
1188 int off;
1189
1190 off = snl_add_msg_attr_nested(nw, type);
1191
1192 for (int i = 0; i < PFTM_MAX; i++)
1193 snl_add_msg_attr_u32(nw, PF_TT_TIMEOUT, timeouts[i]);
1194
1195 snl_end_attr_nested(nw, off);
1196 }
1197
1198 static void
snl_add_msg_attr_uid(struct snl_writer * nw,uint32_t type,const struct pf_rule_uid * uid)1199 snl_add_msg_attr_uid(struct snl_writer *nw, uint32_t type, const struct pf_rule_uid *uid)
1200 {
1201 int off;
1202
1203 off = snl_add_msg_attr_nested(nw, type);
1204
1205 snl_add_msg_attr_u32(nw, PF_RUT_UID_LOW, uid->uid[0]);
1206 snl_add_msg_attr_u32(nw, PF_RUT_UID_HIGH, uid->uid[1]);
1207 snl_add_msg_attr_u8(nw, PF_RUT_OP, uid->op);
1208
1209 snl_end_attr_nested(nw, off);
1210 }
1211
1212 static void
snl_add_msg_attr_pf_rule(struct snl_writer * nw,uint32_t type,const struct pfctl_rule * r)1213 snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r)
1214 {
1215 int off;
1216
1217 off = snl_add_msg_attr_nested(nw, type);
1218
1219 snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src);
1220 snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst);
1221 snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label);
1222 snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier);
1223 snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname);
1224 snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname);
1225 snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname);
1226 snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname);
1227 snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname);
1228 snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname);
1229 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL, &r->rpool);
1230 snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint);
1231 snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid);
1232 snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout);
1233 snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states);
1234 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes);
1235 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states);
1236 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit);
1237 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds);
1238
1239 snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe);
1240 snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe);
1241 snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags);
1242
1243 snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr);
1244 snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob);
1245 snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid);
1246 snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid);
1247
1248 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp);
1249 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6);
1250 snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss);
1251 snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags);
1252
1253 snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid);
1254 snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid);
1255
1256 snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag);
1257 snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action);
1258 snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction);
1259 snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log);
1260 snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif);
1261 snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick);
1262 snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot);
1263 snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not);
1264 snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass);
1265 snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state);
1266 snl_add_msg_attr_u8(nw, PF_RT_AF, r->af);
1267 snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto);
1268 snl_add_msg_attr_u8(nw, PF_RT_TYPE, r->type);
1269 snl_add_msg_attr_u8(nw, PF_RT_CODE, r->code);
1270 snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags);
1271 snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset);
1272 snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl);
1273 snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts);
1274 snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt);
1275 snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl);
1276 snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos);
1277 snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos);
1278
1279 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative);
1280 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard);
1281 snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush);
1282 snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio);
1283 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]);
1284 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]);
1285
1286 snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6);
1287 snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port);
1288
1289 snl_end_attr_nested(nw, off);
1290 }
1291
1292 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)1293 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor,
1294 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket)
1295 {
1296 struct pfctl_handle *h;
1297 int ret;
1298
1299 h = pfctl_open(PF_DEVICE);
1300 if (h == NULL)
1301 return (ENODEV);
1302
1303 ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket);
1304
1305 pfctl_close(h);
1306
1307 return (ret);
1308 }
1309
1310 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)1311 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r,
1312 const char *anchor, const char *anchor_call, uint32_t ticket,
1313 uint32_t pool_ticket)
1314 {
1315 struct snl_writer nw;
1316 struct snl_errmsg_data e = {};
1317 struct nlmsghdr *hdr;
1318 uint32_t seq_id;
1319 int family_id;
1320
1321 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1322 if (family_id == 0)
1323 return (ENOTSUP);
1324
1325 snl_init_writer(&h->ss, &nw);
1326 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE);
1327 hdr->nlmsg_flags |= NLM_F_DUMP;
1328 snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket);
1329 snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket);
1330 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor);
1331 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call);
1332
1333 snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r);
1334
1335 if ((hdr = snl_finalize_msg(&nw)) == NULL)
1336 return (ENXIO);
1337
1338 seq_id = hdr->nlmsg_seq;
1339
1340 if (! snl_send_message(&h->ss, hdr))
1341 return (ENXIO);
1342
1343 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1344 }
1345
1346 return (e.error);
1347 }
1348
1349 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1350 #define _OUT(_field) offsetof(struct pfctl_rules_info, _field)
1351 static struct snl_attr_parser ap_getrules[] = {
1352 { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
1353 { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
1354 };
1355 static struct snl_field_parser fp_getrules[] = {
1356 };
1357 #undef _IN
1358 #undef _OUT
1359 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, fp_getrules, ap_getrules);
1360
1361 int
pfctl_get_rules_info_h(struct pfctl_handle * h,struct pfctl_rules_info * rules,uint32_t ruleset,const char * path)1362 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset,
1363 const char *path)
1364 {
1365 struct snl_errmsg_data e = {};
1366 struct nlmsghdr *hdr;
1367 struct snl_writer nw;
1368 uint32_t seq_id;
1369 int family_id;
1370
1371 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1372 if (family_id == 0)
1373 return (ENOTSUP);
1374
1375 snl_init_writer(&h->ss, &nw);
1376 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES);
1377 hdr->nlmsg_flags |= NLM_F_DUMP;
1378
1379 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path);
1380 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1381
1382 hdr = snl_finalize_msg(&nw);
1383 if (hdr == NULL)
1384 return (ENOMEM);
1385
1386 seq_id = hdr->nlmsg_seq;
1387 if (! snl_send_message(&h->ss, hdr))
1388 return (ENXIO);
1389
1390 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1391 if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules))
1392 continue;
1393 }
1394
1395 return (e.error);
1396 }
1397
1398 int
pfctl_get_rules_info(int dev __unused,struct pfctl_rules_info * rules,uint32_t ruleset,const char * path)1399 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset,
1400 const char *path)
1401 {
1402 struct pfctl_handle *h;
1403 int error;
1404
1405 h = pfctl_open(PF_DEVICE);
1406 if (h == NULL)
1407 return (ENOTSUP);
1408 error = pfctl_get_rules_info_h(h, rules, ruleset, path);
1409 pfctl_close(h);
1410
1411 return (error);
1412 }
1413
1414 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)1415 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor,
1416 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1417 {
1418 return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule,
1419 anchor_call, false));
1420 }
1421
1422 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)1423 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor,
1424 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1425 {
1426 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule,
1427 anchor_call, false));
1428 }
1429
1430 #define _OUT(_field) offsetof(struct pf_addr_wrap, _field)
1431 static const struct snl_attr_parser ap_addr_wrap[] = {
1432 { .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr },
1433 { .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr },
1434 { .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string },
1435 { .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1436 { .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 },
1437 { .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 },
1438 { .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 },
1439 { .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 },
1440 };
1441 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap);
1442 #undef _OUT
1443
1444 #define _OUT(_field) offsetof(struct pf_rule_addr, _field)
1445 static struct snl_attr_parser ap_rule_addr[] = {
1446 { .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
1447 { .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1448 { .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1449 { .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 },
1450 { .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 },
1451 };
1452 #undef _OUT
1453 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr);
1454
1455 struct snl_parsed_labels
1456 {
1457 char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
1458 uint32_t i;
1459 };
1460
1461 static bool
snl_attr_get_pf_rule_labels(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1462 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1463 const void *arg __unused, void *target)
1464 {
1465 struct snl_parsed_labels *l = (struct snl_parsed_labels *)target;
1466 bool ret;
1467
1468 if (l->i >= PF_RULE_MAX_LABEL_COUNT)
1469 return (E2BIG);
1470
1471 ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE,
1472 l->labels[l->i]);
1473 if (ret)
1474 l->i++;
1475
1476 return (ret);
1477 }
1478
1479 #define _OUT(_field) offsetof(struct nl_parsed_labels, _field)
1480 static const struct snl_attr_parser ap_labels[] = {
1481 { .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels },
1482 };
1483 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels);
1484 #undef _OUT
1485
1486 static bool
snl_attr_get_nested_pf_rule_labels(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1487 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1488 const void *arg __unused, void *target)
1489 {
1490 struct snl_parsed_labels parsed_labels = { };
1491 bool error;
1492
1493 /* Assumes target points to the beginning of the structure */
1494 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels);
1495 if (! error)
1496 return (error);
1497
1498 memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels));
1499
1500 return (true);
1501 }
1502
1503 #define _OUT(_field) offsetof(struct pf_mape_portset, _field)
1504 static const struct snl_attr_parser ap_mape_portset[] = {
1505 { .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 },
1506 { .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 },
1507 {. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 },
1508 };
1509 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset);
1510 #undef _OUT
1511
1512 #define _OUT(_field) offsetof(struct pfctl_pool, _field)
1513 static const struct snl_attr_parser ap_pool[] = {
1514 { .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes },
1515 { .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr },
1516 { .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 },
1517 { .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 },
1518 { .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 },
1519 { .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 },
1520 { .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested },
1521 };
1522 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool);
1523 #undef _OUT
1524
1525 struct nl_parsed_timeouts
1526 {
1527 uint32_t timeouts[PFTM_MAX];
1528 uint32_t i;
1529 };
1530
1531 static bool
snl_attr_get_pf_timeout(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1532 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla,
1533 const void *arg __unused, void *target)
1534 {
1535 struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target;
1536 bool ret;
1537
1538 if (t->i >= PFTM_MAX)
1539 return (E2BIG);
1540
1541 ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]);
1542 if (ret)
1543 t->i++;
1544
1545 return (ret);
1546 }
1547
1548 #define _OUT(_field) offsetof(struct nl_parsed_timeout, _field)
1549 static const struct snl_attr_parser ap_timeouts[] = {
1550 { .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout },
1551 };
1552 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts);
1553 #undef _OUT
1554
1555 static bool
snl_attr_get_nested_timeouts(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1556 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla,
1557 const void *arg __unused, void *target)
1558 {
1559 struct nl_parsed_timeouts parsed_timeouts = { };
1560 bool error;
1561
1562 /* Assumes target points to the beginning of the structure */
1563 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts);
1564 if (! error)
1565 return (error);
1566
1567 memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts));
1568
1569 return (true);
1570 }
1571
1572 #define _OUT(_field) offsetof(struct pf_rule_uid, _field)
1573 static const struct snl_attr_parser ap_rule_uid[] = {
1574 { .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 },
1575 { .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 },
1576 { .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 },
1577 };
1578 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid);
1579 #undef _OUT
1580
1581 struct pfctl_nl_get_rule {
1582 struct pfctl_rule r;
1583 char anchor_call[MAXPATHLEN];
1584 };
1585 #define _OUT(_field) offsetof(struct pfctl_nl_get_rule, _field)
1586 static struct snl_attr_parser ap_getrule[] = {
1587 { .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1588 { .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1589 { .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 },
1590 { .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels },
1591 { .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string },
1592 { .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1593 { .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1594 { .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1595 { .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1596 { .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1597 { .type = PF_RT_RPOOL, .off = _OUT(r.rpool), .arg = &pool_parser, .cb = snl_attr_get_nested },
1598 { .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 },
1599 { .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 },
1600 { .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts },
1601 { .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 },
1602 { .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 },
1603 { .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 },
1604 { .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 },
1605 { .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 },
1606 { .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 },
1607 { .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 },
1608 { .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 },
1609 { .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 },
1610 { .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 },
1611 { .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 },
1612 {. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 },
1613 { .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 },
1614 { .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 },
1615 { .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 },
1616 { .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 },
1617 { .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1618 { .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1619 { .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 },
1620 { .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 },
1621 { .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 },
1622 { .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 },
1623 { .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 },
1624 { .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 },
1625 { .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 },
1626 { .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 },
1627 { .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 },
1628 { .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 },
1629 { .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 },
1630 { .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 },
1631 { .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 },
1632 { .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 },
1633 { .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 },
1634 { .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 },
1635 { .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 },
1636 { .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 },
1637 { .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 },
1638 { .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 },
1639 { .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 },
1640 { .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 },
1641 { .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 },
1642 { .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 },
1643 { .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 },
1644 { .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 },
1645 { .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 },
1646 { .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 },
1647 { .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr },
1648 { .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 },
1649 { .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 },
1650 { .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 },
1651 { .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 },
1652 { .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 },
1653 { .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 },
1654 { .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 },
1655 { .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 },
1656 { .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 },
1657 { .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 },
1658 { .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string },
1659 };
1660 static struct snl_field_parser fp_getrule[] = {};
1661 #undef _OUT
1662 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, fp_getrule, ap_getrule);
1663
1664 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)1665 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket,
1666 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1667 char *anchor_call, bool clear)
1668 {
1669 struct pfctl_nl_get_rule attrs = {};
1670 struct snl_errmsg_data e = {};
1671 struct nlmsghdr *hdr;
1672 struct snl_writer nw;
1673 uint32_t seq_id;
1674 int family_id;
1675
1676 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1677 if (family_id == 0)
1678 return (ENOTSUP);
1679
1680 snl_init_writer(&h->ss, &nw);
1681 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE);
1682 hdr->nlmsg_flags |= NLM_F_DUMP;
1683
1684 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor);
1685 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1686 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr);
1687 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket);
1688 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear);
1689
1690 hdr = snl_finalize_msg(&nw);
1691 if (hdr == NULL)
1692 return (ENOMEM);
1693
1694 seq_id = hdr->nlmsg_seq;
1695 if (! snl_send_message(&h->ss, hdr))
1696 return (ENXIO);
1697
1698 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1699 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs))
1700 continue;
1701 }
1702
1703 memcpy(rule, &attrs.r, sizeof(attrs.r));
1704 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN);
1705
1706 return (e.error);
1707 }
1708
1709 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)1710 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket,
1711 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1712 char *anchor_call, bool clear)
1713 {
1714 nvlist_t *nvl;
1715 int ret;
1716
1717 nvl = nvlist_create(0);
1718 if (nvl == 0)
1719 return (ENOMEM);
1720
1721 nvlist_add_number(nvl, "nr", nr);
1722 nvlist_add_number(nvl, "ticket", ticket);
1723 nvlist_add_string(nvl, "anchor", anchor);
1724 nvlist_add_number(nvl, "ruleset", ruleset);
1725
1726 if (clear)
1727 nvlist_add_bool(nvl, "clear_counter", true);
1728
1729 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0)
1730 goto out;
1731
1732 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule);
1733
1734 if (anchor_call)
1735 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1736 MAXPATHLEN);
1737
1738 out:
1739 nvlist_destroy(nvl);
1740 return (ret);
1741 }
1742
1743 int
pfctl_set_keepcounters(int dev,bool keep)1744 pfctl_set_keepcounters(int dev, bool keep)
1745 {
1746 struct pfioc_nv nv;
1747 nvlist_t *nvl;
1748 int ret;
1749
1750 nvl = nvlist_create(0);
1751
1752 nvlist_add_bool(nvl, "keep_counters", keep);
1753
1754 nv.data = nvlist_pack(nvl, &nv.len);
1755 nv.size = nv.len;
1756
1757 nvlist_destroy(nvl);
1758
1759 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv);
1760
1761 free(nv.data);
1762 return (ret);
1763 }
1764
1765 struct pfctl_creator {
1766 uint32_t id;
1767 };
1768 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1769 #define _OUT(_field) offsetof(struct pfctl_creator, _field)
1770 static struct snl_attr_parser ap_creators[] = {
1771 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
1772 };
1773 static struct snl_field_parser fp_creators[] = {
1774 };
1775 #undef _IN
1776 #undef _OUT
1777 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, fp_creators, ap_creators);
1778
1779 static int
pfctl_get_creators_nl(struct snl_state * ss,uint32_t * creators,size_t * len)1780 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len)
1781 {
1782
1783 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1784 size_t i = 0;
1785
1786 struct nlmsghdr *hdr;
1787 struct snl_writer nw;
1788
1789 if (family_id == 0)
1790 return (ENOTSUP);
1791
1792 snl_init_writer(ss, &nw);
1793 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS);
1794 hdr->nlmsg_flags |= NLM_F_DUMP;
1795 hdr = snl_finalize_msg(&nw);
1796 if (hdr == NULL)
1797 return (ENOMEM);
1798 uint32_t seq_id = hdr->nlmsg_seq;
1799
1800 snl_send_message(ss, hdr);
1801
1802 struct snl_errmsg_data e = {};
1803 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1804 struct pfctl_creator c;
1805 bzero(&c, sizeof(c));
1806
1807 if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c))
1808 continue;
1809
1810 creators[i] = c.id;
1811 i++;
1812 if (i > *len)
1813 return (E2BIG);
1814 }
1815
1816 *len = i;
1817
1818 return (0);
1819 }
1820
1821 int
pfctl_get_creatorids(struct pfctl_handle * h,uint32_t * creators,size_t * len)1822 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len)
1823 {
1824 int error;
1825
1826 error = pfctl_get_creators_nl(&h->ss, creators, len);
1827
1828 return (error);
1829 }
1830
1831 static inline bool
snl_attr_get_pfaddr(struct snl_state * ss __unused,struct nlattr * nla,const void * arg __unused,void * target)1832 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla,
1833 const void *arg __unused, void *target)
1834 {
1835 memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla));
1836 return (true);
1837 }
1838
1839 static inline bool
snl_attr_store_ifname(struct snl_state * ss __unused,struct nlattr * nla,const void * arg __unused,void * target)1840 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla,
1841 const void *arg __unused, void *target)
1842 {
1843 size_t maxlen = NLA_DATA_LEN(nla);
1844
1845 if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) {
1846 strlcpy(target, (char *)NLA_DATA(nla), maxlen);
1847 return (true);
1848 }
1849 return (false);
1850 }
1851
1852 #define _OUT(_field) offsetof(struct pfctl_state_peer, _field)
1853 static const struct snl_attr_parser nla_p_speer[] = {
1854 { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 },
1855 { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 },
1856 { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 },
1857 { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 },
1858 { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 },
1859 };
1860 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer);
1861 #undef _OUT
1862
1863 #define _OUT(_field) offsetof(struct pf_state_key_export, _field)
1864 static const struct snl_attr_parser nla_p_skey[] = {
1865 { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr },
1866 { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr },
1867 { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1868 { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1869 };
1870 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey);
1871 #undef _OUT
1872
1873 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1874 #define _OUT(_field) offsetof(struct pfctl_state, _field)
1875 static struct snl_attr_parser ap_state[] = {
1876 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 },
1877 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 },
1878 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname },
1879 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname },
1880 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1881 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1882 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested },
1883 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested },
1884 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr },
1885 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
1886 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 },
1887 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 },
1888 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 },
1889 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 },
1890 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
1891 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
1892 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
1893 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
1894 { .type = PF_ST_AF, .off = _OUT(key[0].af), .cb = snl_attr_get_uint8 },
1895 { .type = PF_ST_PROTO, .off = _OUT(key[0].proto), .cb = snl_attr_get_uint8 },
1896 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 },
1897 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 },
1898 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 },
1899 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 },
1900 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 },
1901 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 },
1902 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 },
1903 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 },
1904 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 },
1905 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 },
1906 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname },
1907 };
1908 static struct snl_field_parser fp_state[] = {
1909 };
1910 #undef _IN
1911 #undef _OUT
1912 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, fp_state, ap_state);
1913
1914 static const struct snl_hdr_parser *all_parsers[] = {
1915 &state_parser, &skey_parser, &speer_parser,
1916 &creator_parser, &getrules_parser
1917 };
1918
1919 static int
pfctl_get_states_nl(struct pfctl_state_filter * filter,struct snl_state * ss,pfctl_get_state_fn f,void * arg)1920 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg)
1921 {
1922 SNL_VERIFY_PARSERS(all_parsers);
1923 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1924 int ret;
1925
1926 struct nlmsghdr *hdr;
1927 struct snl_writer nw;
1928
1929 if (family_id == 0)
1930 return (ENOTSUP);
1931
1932 snl_init_writer(ss, &nw);
1933 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES);
1934 hdr->nlmsg_flags |= NLM_F_DUMP;
1935 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname);
1936 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto);
1937 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af);
1938 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6);
1939 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6);
1940
1941 hdr = snl_finalize_msg(&nw);
1942 if (hdr == NULL)
1943 return (ENOMEM);
1944
1945 uint32_t seq_id = hdr->nlmsg_seq;
1946
1947 snl_send_message(ss, hdr);
1948
1949 struct snl_errmsg_data e = {};
1950 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1951 struct pfctl_state s;
1952 bzero(&s, sizeof(s));
1953 if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s))
1954 continue;
1955
1956 s.key[1].af = s.key[0].af;
1957 s.key[1].proto = s.key[0].proto;
1958
1959 ret = f(&s, arg);
1960 if (ret != 0)
1961 return (ret);
1962 }
1963
1964 return (0);
1965 }
1966
1967 int
pfctl_get_states_iter(pfctl_get_state_fn f,void * arg)1968 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg)
1969 {
1970 struct pfctl_state_filter filter = {};
1971 return (pfctl_get_filtered_states_iter(&filter, f, arg));
1972 }
1973
1974 int
pfctl_get_filtered_states_iter(struct pfctl_state_filter * filter,pfctl_get_state_fn f,void * arg)1975 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
1976 {
1977 struct snl_state ss = {};
1978 int error;
1979
1980 snl_init(&ss, NETLINK_GENERIC);
1981 error = pfctl_get_states_nl(filter, &ss, f, arg);
1982 snl_free(&ss);
1983
1984 return (error);
1985 }
1986
1987 static int
pfctl_append_states(struct pfctl_state * s,void * arg)1988 pfctl_append_states(struct pfctl_state *s, void *arg)
1989 {
1990 struct pfctl_state *new;
1991 struct pfctl_states *states = (struct pfctl_states *)arg;
1992
1993 new = malloc(sizeof(*s));
1994 if (new == NULL)
1995 return (ENOMEM);
1996
1997 memcpy(new, s, sizeof(*s));
1998
1999 TAILQ_INSERT_TAIL(&states->states, new, entry);
2000
2001 return (0);
2002 }
2003
2004 int
pfctl_get_states(int dev __unused,struct pfctl_states * states)2005 pfctl_get_states(int dev __unused, struct pfctl_states *states)
2006 {
2007 int ret;
2008
2009 bzero(states, sizeof(*states));
2010 TAILQ_INIT(&states->states);
2011
2012 ret = pfctl_get_states_iter(pfctl_append_states, states);
2013 if (ret != 0) {
2014 pfctl_free_states(states);
2015 return (ret);
2016 }
2017
2018 return (0);
2019 }
2020
2021 void
pfctl_free_states(struct pfctl_states * states)2022 pfctl_free_states(struct pfctl_states *states)
2023 {
2024 struct pfctl_state *s, *tmp;
2025
2026 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) {
2027 free(s);
2028 }
2029
2030 bzero(states, sizeof(*states));
2031 }
2032
2033 struct pfctl_nl_clear_states {
2034 uint32_t killed;
2035 };
2036 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field)
2037 static struct snl_attr_parser ap_clear_states[] = {
2038 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 },
2039 };
2040 static struct snl_field_parser fp_clear_states[] = {};
2041 #undef _OUT
2042 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, fp_clear_states, ap_clear_states);
2043
2044 static int
_pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed,int cmd)2045 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2046 unsigned int *killed, int cmd)
2047 {
2048 struct snl_writer nw;
2049 struct snl_errmsg_data e = {};
2050 struct pfctl_nl_clear_states attrs = {};
2051 struct nlmsghdr *hdr;
2052 uint32_t seq_id;
2053 int family_id;
2054
2055 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2056 if (family_id == 0)
2057 return (ENOTSUP);
2058
2059 snl_init_writer(&h->ss, &nw);
2060 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
2061 hdr->nlmsg_flags |= NLM_F_DUMP;
2062
2063 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id);
2064 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid));
2065 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction);
2066 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af);
2067 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto);
2068 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src);
2069 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst);
2070 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr);
2071 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname);
2072 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label);
2073 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match);
2074 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat);
2075
2076 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2077 return (ENXIO);
2078
2079 seq_id = hdr->nlmsg_seq;
2080
2081 if (! snl_send_message(&h->ss, hdr))
2082 return (ENXIO);
2083
2084 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2085 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs))
2086 continue;
2087 }
2088
2089 if (killed)
2090 *killed = attrs.killed;
2091
2092 return (e.error);
2093 }
2094
2095 int
pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2096 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2097 unsigned int *killed)
2098 {
2099 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES));
2100 }
2101
2102 int
pfctl_kill_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2103 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2104 unsigned int *killed)
2105 {
2106 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES));
2107 }
2108
2109 static int
_pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed,uint64_t cmd)2110 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2111 unsigned int *killed, uint64_t cmd)
2112 {
2113 struct pfctl_handle *h;
2114 int ret;
2115
2116 h = pfctl_open(PF_DEVICE);
2117 if (h == NULL)
2118 return (ENODEV);
2119
2120 ret = _pfctl_clear_states_h(h, kill, killed, cmd);
2121 pfctl_close(h);
2122
2123 return (ret);
2124 }
2125
2126 int
pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2127 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2128 unsigned int *killed)
2129 {
2130 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES));
2131 }
2132
2133 int
pfctl_kill_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2134 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed)
2135 {
2136 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES));
2137 }
2138
2139 int
pfctl_clear_rules(int dev,const char * anchorname)2140 pfctl_clear_rules(int dev, const char *anchorname)
2141 {
2142 struct pfioc_trans trans;
2143 struct pfioc_trans_e transe[2];
2144 int ret;
2145
2146 bzero(&trans, sizeof(trans));
2147 bzero(&transe, sizeof(transe));
2148
2149 transe[0].rs_num = PF_RULESET_SCRUB;
2150 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2151 >= sizeof(transe[0].anchor))
2152 return (E2BIG);
2153
2154 transe[1].rs_num = PF_RULESET_FILTER;
2155 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2156 >= sizeof(transe[1].anchor))
2157 return (E2BIG);
2158
2159 trans.size = 2;
2160 trans.esize = sizeof(transe[0]);
2161 trans.array = transe;
2162
2163 ret = ioctl(dev, DIOCXBEGIN, &trans);
2164 if (ret != 0)
2165 return (ret);
2166 return ioctl(dev, DIOCXCOMMIT, &trans);
2167 }
2168
2169 int
pfctl_clear_nat(int dev,const char * anchorname)2170 pfctl_clear_nat(int dev, const char *anchorname)
2171 {
2172 struct pfioc_trans trans;
2173 struct pfioc_trans_e transe[3];
2174 int ret;
2175
2176 bzero(&trans, sizeof(trans));
2177 bzero(&transe, sizeof(transe));
2178
2179 transe[0].rs_num = PF_RULESET_NAT;
2180 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2181 >= sizeof(transe[0].anchor))
2182 return (E2BIG);
2183
2184 transe[1].rs_num = PF_RULESET_BINAT;
2185 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2186 >= sizeof(transe[0].anchor))
2187 return (E2BIG);
2188
2189 transe[2].rs_num = PF_RULESET_RDR;
2190 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor))
2191 >= sizeof(transe[2].anchor))
2192 return (E2BIG);
2193
2194 trans.size = 3;
2195 trans.esize = sizeof(transe[0]);
2196 trans.array = transe;
2197
2198 ret = ioctl(dev, DIOCXBEGIN, &trans);
2199 if (ret != 0)
2200 return (ret);
2201 return ioctl(dev, DIOCXCOMMIT, &trans);
2202 }
2203 int
pfctl_clear_eth_rules(int dev,const char * anchorname)2204 pfctl_clear_eth_rules(int dev, const char *anchorname)
2205 {
2206 struct pfioc_trans trans;
2207 struct pfioc_trans_e transe;
2208 int ret;
2209
2210 bzero(&trans, sizeof(trans));
2211 bzero(&transe, sizeof(transe));
2212
2213 transe.rs_num = PF_RULESET_ETH;
2214 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor))
2215 >= sizeof(transe.anchor))
2216 return (E2BIG);
2217
2218 trans.size = 1;
2219 trans.esize = sizeof(transe);
2220 trans.array = &transe;
2221
2222 ret = ioctl(dev, DIOCXBEGIN, &trans);
2223 if (ret != 0)
2224 return (ret);
2225 return ioctl(dev, DIOCXCOMMIT, &trans);
2226 }
2227
2228 static int
_pfctl_get_limit(int dev,const int index,uint * limit)2229 _pfctl_get_limit(int dev, const int index, uint *limit)
2230 {
2231 struct pfioc_limit pl;
2232
2233 bzero(&pl, sizeof(pl));
2234 pl.index = index;
2235
2236 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1)
2237 return (errno);
2238
2239 *limit = pl.limit;
2240
2241 return (0);
2242 }
2243
2244 int
pfctl_set_syncookies(int dev,const struct pfctl_syncookies * s)2245 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s)
2246 {
2247 struct pfioc_nv nv;
2248 nvlist_t *nvl;
2249 int ret;
2250 uint state_limit;
2251 uint64_t lim, hi, lo;
2252
2253 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2254 if (ret != 0)
2255 return (ret);
2256
2257 lim = state_limit;
2258 hi = lim * s->highwater / 100;
2259 lo = lim * s->lowwater / 100;
2260
2261 if (lo == hi)
2262 hi++;
2263
2264 nvl = nvlist_create(0);
2265
2266 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER);
2267 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE);
2268 nvlist_add_number(nvl, "highwater", hi);
2269 nvlist_add_number(nvl, "lowwater", lo);
2270
2271 nv.data = nvlist_pack(nvl, &nv.len);
2272 nv.size = nv.len;
2273 nvlist_destroy(nvl);
2274 nvl = NULL;
2275
2276 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv);
2277
2278 free(nv.data);
2279 return (ret);
2280 }
2281
2282 int
pfctl_get_syncookies(int dev,struct pfctl_syncookies * s)2283 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s)
2284 {
2285 nvlist_t *nvl;
2286 int ret;
2287 uint state_limit;
2288 bool enabled, adaptive;
2289
2290 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2291 if (ret != 0)
2292 return (ret);
2293
2294 bzero(s, sizeof(*s));
2295
2296 nvl = nvlist_create(0);
2297
2298 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) {
2299 ret = errno;
2300 goto out;
2301 }
2302
2303 enabled = nvlist_get_bool(nvl, "enabled");
2304 adaptive = nvlist_get_bool(nvl, "adaptive");
2305
2306 if (enabled) {
2307 if (adaptive)
2308 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE;
2309 else
2310 s->mode = PFCTL_SYNCOOKIES_ALWAYS;
2311 } else {
2312 s->mode = PFCTL_SYNCOOKIES_NEVER;
2313 }
2314
2315 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit;
2316 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit;
2317 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states");
2318
2319 out:
2320 nvlist_destroy(nvl);
2321 return (ret);
2322 }
2323
2324 int
pfctl_table_add_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * nadd,int flags)2325 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2326 *addr, int size, int *nadd, int flags)
2327 {
2328 struct pfioc_table io;
2329
2330 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2331 return (EINVAL);
2332 }
2333 bzero(&io, sizeof io);
2334 io.pfrio_flags = flags;
2335 io.pfrio_table = *tbl;
2336 io.pfrio_buffer = addr;
2337 io.pfrio_esize = sizeof(*addr);
2338 io.pfrio_size = size;
2339
2340 if (ioctl(dev, DIOCRADDADDRS, &io))
2341 return (errno);
2342 if (nadd != NULL)
2343 *nadd = io.pfrio_nadd;
2344 return (0);
2345 }
2346
2347 int
pfctl_table_del_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * ndel,int flags)2348 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2349 *addr, int size, int *ndel, int flags)
2350 {
2351 struct pfioc_table io;
2352
2353 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2354 return (EINVAL);
2355 }
2356 bzero(&io, sizeof io);
2357 io.pfrio_flags = flags;
2358 io.pfrio_table = *tbl;
2359 io.pfrio_buffer = addr;
2360 io.pfrio_esize = sizeof(*addr);
2361 io.pfrio_size = size;
2362
2363 if (ioctl(dev, DIOCRDELADDRS, &io))
2364 return (errno);
2365 if (ndel != NULL)
2366 *ndel = io.pfrio_ndel;
2367 return (0);
2368 }
2369
2370 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)2371 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2372 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags)
2373 {
2374 struct pfioc_table io;
2375
2376 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2377 return (EINVAL);
2378 }
2379 bzero(&io, sizeof io);
2380 io.pfrio_flags = flags;
2381 io.pfrio_table = *tbl;
2382 io.pfrio_buffer = addr;
2383 io.pfrio_esize = sizeof(*addr);
2384 io.pfrio_size = size;
2385 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0;
2386 if (ioctl(dev, DIOCRSETADDRS, &io))
2387 return (-1);
2388 if (nadd != NULL)
2389 *nadd = io.pfrio_nadd;
2390 if (ndel != NULL)
2391 *ndel = io.pfrio_ndel;
2392 if (nchange != NULL)
2393 *nchange = io.pfrio_nchange;
2394 if (size2 != NULL)
2395 *size2 = io.pfrio_size2;
2396 return (0);
2397 }
2398
pfctl_table_get_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int * size,int flags)2399 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr,
2400 int *size, int flags)
2401 {
2402 struct pfioc_table io;
2403
2404 if (tbl == NULL || size == NULL || *size < 0 ||
2405 (*size && addr == NULL)) {
2406 return (EINVAL);
2407 }
2408 bzero(&io, sizeof io);
2409 io.pfrio_flags = flags;
2410 io.pfrio_table = *tbl;
2411 io.pfrio_buffer = addr;
2412 io.pfrio_esize = sizeof(*addr);
2413 io.pfrio_size = *size;
2414 if (ioctl(dev, DIOCRGETADDRS, &io))
2415 return (-1);
2416 *size = io.pfrio_size;
2417 return (0);
2418 }
2419
2420 int
pfctl_set_statusif(struct pfctl_handle * h,const char * ifname)2421 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname)
2422 {
2423 struct snl_writer nw;
2424 struct snl_errmsg_data e = {};
2425 struct nlmsghdr *hdr;
2426 uint32_t seq_id;
2427 int family_id;
2428
2429 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2430 if (family_id == 0)
2431 return (ENOTSUP);
2432
2433 snl_init_writer(&h->ss, &nw);
2434 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF);
2435
2436 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname);
2437
2438 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2439 return (ENXIO);
2440
2441 seq_id = hdr->nlmsg_seq;
2442
2443 if (! snl_send_message(&h->ss, hdr))
2444 return (ENXIO);
2445
2446 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2447 }
2448
2449 return (e.error);
2450 }
2451
2452 #define _IN(_field) offsetof(struct genlmsghdr, _field)
2453 #define _OUT(_field) offsetof(struct pfctl_natlook, _field)
2454 static struct snl_attr_parser ap_natlook[] = {
2455 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr },
2456 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr },
2457 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 },
2458 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 },
2459 };
2460 static struct snl_field_parser fp_natlook[] = {};
2461 #undef _IN
2462 #undef _OUT
2463 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, fp_natlook, ap_natlook);
2464
2465 int
pfctl_natlook(struct pfctl_handle * h,const struct pfctl_natlook_key * k,struct pfctl_natlook * r)2466 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k,
2467 struct pfctl_natlook *r)
2468 {
2469 struct snl_writer nw;
2470 struct snl_errmsg_data e = {};
2471 struct nlmsghdr *hdr;
2472 uint32_t seq_id;
2473 int family_id;
2474
2475 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2476 if (family_id == 0)
2477 return (ENOTSUP);
2478
2479 snl_init_writer(&h->ss, &nw);
2480 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK);
2481 hdr->nlmsg_flags |= NLM_F_DUMP;
2482
2483 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af);
2484 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction);
2485 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto);
2486 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6);
2487 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6);
2488 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport);
2489 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport);
2490
2491 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2492 return (ENXIO);
2493
2494 seq_id = hdr->nlmsg_seq;
2495
2496 if (! snl_send_message(&h->ss, hdr))
2497 return (ENXIO);
2498
2499 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2500 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r))
2501 continue;
2502 }
2503
2504 return (e.error);
2505 }
2506
2507 int
pfctl_set_debug(struct pfctl_handle * h,uint32_t level)2508 pfctl_set_debug(struct pfctl_handle *h, uint32_t level)
2509 {
2510 struct snl_writer nw;
2511 struct snl_errmsg_data e = {};
2512 struct nlmsghdr *hdr;
2513 uint32_t seq_id;
2514 int family_id;
2515
2516 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2517 if (family_id == 0)
2518 return (ENOTSUP);
2519
2520 snl_init_writer(&h->ss, &nw);
2521 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG);
2522
2523 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level);
2524
2525 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2526 return (ENXIO);
2527
2528 seq_id = hdr->nlmsg_seq;
2529
2530 if (! snl_send_message(&h->ss, hdr))
2531 return (ENXIO);
2532
2533 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2534 }
2535
2536 return (e.error);
2537 }
2538
2539 int
pfctl_set_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t seconds)2540 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds)
2541 {
2542 struct snl_writer nw;
2543 struct snl_errmsg_data e = {};
2544 struct nlmsghdr *hdr;
2545 uint32_t seq_id;
2546 int family_id;
2547
2548 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2549 if (family_id == 0)
2550 return (ENOTSUP);
2551
2552 snl_init_writer(&h->ss, &nw);
2553 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT);
2554
2555 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2556 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds);
2557
2558 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2559 return (ENXIO);
2560
2561 seq_id = hdr->nlmsg_seq;
2562
2563 if (! snl_send_message(&h->ss, hdr))
2564 return (ENXIO);
2565
2566 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2567 }
2568
2569 return (e.error);
2570 }
2571
2572 struct pfctl_nl_timeout {
2573 uint32_t seconds;
2574 };
2575 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field)
2576 static struct snl_attr_parser ap_get_timeout[] = {
2577 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
2578 };
2579 static struct snl_field_parser fp_get_timeout[] = {};
2580 #undef _OUT
2581 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, fp_get_timeout, ap_get_timeout);
2582
2583 int
pfctl_get_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t * seconds)2584 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds)
2585 {
2586 struct snl_writer nw;
2587 struct pfctl_nl_timeout to = {};
2588 struct snl_errmsg_data e = {};
2589 struct nlmsghdr *hdr;
2590 uint32_t seq_id;
2591 int family_id;
2592
2593 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2594 if (family_id == 0)
2595 return (ENOTSUP);
2596
2597 snl_init_writer(&h->ss, &nw);
2598 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT);
2599 hdr->nlmsg_flags |= NLM_F_DUMP;
2600
2601 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2602
2603 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2604 return (ENXIO);
2605
2606 seq_id = hdr->nlmsg_seq;
2607
2608 if (! snl_send_message(&h->ss, hdr))
2609 return (ENXIO);
2610
2611 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2612 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to))
2613 continue;
2614 }
2615
2616 if (seconds != NULL)
2617 *seconds = to.seconds;
2618
2619 return (e.error);
2620 }
2621
2622 int
pfctl_set_limit(struct pfctl_handle * h,const int index,const uint limit)2623 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit)
2624 {
2625 struct snl_writer nw;
2626 struct snl_errmsg_data e = {};
2627 struct nlmsghdr *hdr;
2628 uint32_t seq_id;
2629 int family_id;
2630
2631 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2632 if (family_id == 0)
2633 return (ENOTSUP);
2634
2635 snl_init_writer(&h->ss, &nw);
2636 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT);
2637
2638 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2639 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit);
2640
2641 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2642 return (ENXIO);
2643
2644 seq_id = hdr->nlmsg_seq;
2645
2646 if (! snl_send_message(&h->ss, hdr))
2647 return (ENXIO);
2648
2649 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2650 }
2651
2652 return (e.error);
2653 }
2654
2655 struct pfctl_nl_limit {
2656 unsigned int limit;
2657 };
2658 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field)
2659 static struct snl_attr_parser ap_get_limit[] = {
2660 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
2661 };
2662 static struct snl_field_parser fp_get_limit[] = {};
2663 #undef _OUT
2664 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, fp_get_limit, ap_get_limit);
2665
2666 int
pfctl_get_limit(struct pfctl_handle * h,const int index,uint * limit)2667 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit)
2668 {
2669 struct snl_writer nw;
2670 struct pfctl_nl_limit li = {};
2671 struct snl_errmsg_data e = {};
2672 struct nlmsghdr *hdr;
2673 uint32_t seq_id;
2674 int family_id;
2675
2676 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2677 if (family_id == 0)
2678 return (ENOTSUP);
2679
2680 snl_init_writer(&h->ss, &nw);
2681 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT);
2682 hdr->nlmsg_flags |= NLM_F_DUMP;
2683
2684 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2685
2686 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2687 return (ENXIO);
2688
2689 seq_id = hdr->nlmsg_seq;
2690
2691 if (! snl_send_message(&h->ss, hdr))
2692 return (ENXIO);
2693
2694 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2695 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li))
2696 continue;
2697 }
2698
2699 if (limit != NULL)
2700 *limit = li.limit;
2701
2702 return (e.error);
2703 }
2704
2705 struct pfctl_nl_begin_addrs {
2706 uint32_t ticket;
2707 };
2708 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field)
2709 static struct snl_attr_parser ap_begin_addrs[] = {
2710 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2711 };
2712 static struct snl_field_parser fp_begin_addrs[] = {};
2713 #undef _OUT
2714 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, fp_begin_addrs, ap_begin_addrs);
2715
2716 int
pfctl_begin_addrs(struct pfctl_handle * h,uint32_t * ticket)2717 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket)
2718 {
2719 struct snl_writer nw;
2720 struct pfctl_nl_begin_addrs attrs = {};
2721 struct snl_errmsg_data e = {};
2722 struct nlmsghdr *hdr;
2723 uint32_t seq_id;
2724 int family_id;
2725
2726 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2727 if (family_id == 0)
2728 return (ENOTSUP);
2729
2730 snl_init_writer(&h->ss, &nw);
2731 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS);
2732 hdr->nlmsg_flags |= NLM_F_DUMP;
2733
2734 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2735 return (ENXIO);
2736
2737 seq_id = hdr->nlmsg_seq;
2738
2739 if (! snl_send_message(&h->ss, hdr))
2740 return (ENXIO);
2741
2742 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2743 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs))
2744 continue;
2745 }
2746
2747 if (ticket != NULL)
2748 *ticket = attrs.ticket;
2749
2750 return (e.error);
2751 }
2752
2753 int
pfctl_add_addr(struct pfctl_handle * h,const struct pfioc_pooladdr * pa)2754 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa)
2755 {
2756 struct snl_writer nw;
2757 struct snl_errmsg_data e = {};
2758 struct nlmsghdr *hdr;
2759 uint32_t seq_id;
2760 int family_id;
2761
2762 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2763 if (family_id == 0)
2764 return (ENOTSUP);
2765
2766 snl_init_writer(&h->ss, &nw);
2767 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR);
2768
2769 snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action);
2770 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket);
2771 snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr);
2772 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num);
2773 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action);
2774 snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last);
2775 snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af);
2776 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor);
2777 snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr);
2778
2779 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2780 return (ENXIO);
2781
2782 seq_id = hdr->nlmsg_seq;
2783
2784 if (! snl_send_message(&h->ss, hdr))
2785 return (ENXIO);
2786
2787 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2788 }
2789
2790 return (e.error);
2791 }
2792
2793 static const struct snl_attr_parser ap_get_addrs[] = {
2794 { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 },
2795 };
2796 static struct snl_field_parser fp_get_addrs[] = {};
2797 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, fp_get_addrs, ap_get_addrs);
2798
2799 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)2800 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2801 uint8_t r_action, const char *anchor, uint32_t *nr)
2802 {
2803 struct snl_writer nw;
2804 struct snl_errmsg_data e = {};
2805 struct nlmsghdr *hdr;
2806 uint32_t seq_id;
2807 int family_id;
2808
2809 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2810 if (family_id == 0)
2811 return (ENOTSUP);
2812
2813 snl_init_writer(&h->ss, &nw);
2814 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS);
2815
2816 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2817 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2818 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2819 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2820
2821 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2822 return (ENXIO);
2823
2824 seq_id = hdr->nlmsg_seq;
2825
2826 if (! snl_send_message(&h->ss, hdr))
2827 return (ENXIO);
2828
2829 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2830 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr))
2831 continue;
2832 }
2833
2834 return (e.error);
2835 }
2836
2837 #define _OUT(_field) offsetof(struct pf_pooladdr, _field)
2838 static const struct snl_attr_parser ap_pool_addr[] = {
2839 { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
2840 { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
2841 };
2842 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr);
2843 #undef _OUT
2844
2845 #define _OUT(_field) offsetof(struct pfioc_pooladdr, _field)
2846 static const struct snl_attr_parser ap_get_addr[] = {
2847 { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 },
2848 { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2849 { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
2850 { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 },
2851 { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 },
2852 { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 },
2853 { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
2854 { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string },
2855 { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested },
2856 };
2857 static struct snl_field_parser fp_get_addr[] = {};
2858 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, fp_get_addr, ap_get_addr);
2859 #undef _OUT
2860
2861 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)2862 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2863 uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa)
2864 {
2865 struct snl_writer nw;
2866 struct snl_errmsg_data e = {};
2867 struct nlmsghdr *hdr;
2868 uint32_t seq_id;
2869 int family_id;
2870
2871 family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2872 if (family_id == 0)
2873 return (ENOTSUP);
2874
2875 snl_init_writer(&h->ss, &nw);
2876 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR);
2877
2878 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2879 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2880 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2881 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2882 snl_add_msg_attr_u32(&nw, PF_AA_NR, nr);
2883
2884 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2885 return (ENXIO);
2886
2887 seq_id = hdr->nlmsg_seq;
2888
2889 if (! snl_send_message(&h->ss, hdr))
2890 return (ENXIO);
2891
2892 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2893 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa))
2894 continue;
2895 }
2896
2897 return (0);
2898 }
2899