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->rdr);
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_RDR, &r->rdr);
1230 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_NAT, &r->nat);
1231 snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint);
1232 snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid);
1233 snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout);
1234 snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states);
1235 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes);
1236 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states);
1237 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN, r->max_src_conn);
1238 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit);
1239 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds);
1240
1241 snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe);
1242 snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe);
1243 snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags);
1244
1245 snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr);
1246 snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob);
1247 snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid);
1248 snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid);
1249
1250 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp);
1251 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6);
1252 snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss);
1253 snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags);
1254
1255 snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid);
1256 snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid);
1257 snl_add_msg_attr_string(nw, PF_RT_RCV_IFNAME, r->rcv_ifname);
1258
1259 snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag);
1260 snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action);
1261 snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction);
1262 snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log);
1263 snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif);
1264 snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick);
1265 snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot);
1266 snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not);
1267 snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass);
1268 snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state);
1269 snl_add_msg_attr_u8(nw, PF_RT_AF, r->af);
1270 snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto);
1271 snl_add_msg_attr_u8(nw, PF_RT_TYPE, r->type);
1272 snl_add_msg_attr_u8(nw, PF_RT_CODE, r->code);
1273 snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags);
1274 snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset);
1275 snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl);
1276 snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts);
1277 snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt);
1278 snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl);
1279 snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos);
1280 snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos);
1281
1282 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative);
1283 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard);
1284 snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush);
1285 snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio);
1286 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]);
1287 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]);
1288 snl_add_msg_attr_u8(nw, PF_RT_NAF, r->naf);
1289
1290 snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6);
1291 snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port);
1292
1293 snl_end_attr_nested(nw, off);
1294 }
1295
1296 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)1297 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor,
1298 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket)
1299 {
1300 struct pfctl_handle *h;
1301 int ret;
1302
1303 h = pfctl_open(PF_DEVICE);
1304 if (h == NULL)
1305 return (ENODEV);
1306
1307 ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket);
1308
1309 pfctl_close(h);
1310
1311 return (ret);
1312 }
1313
1314 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)1315 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r,
1316 const char *anchor, const char *anchor_call, uint32_t ticket,
1317 uint32_t pool_ticket)
1318 {
1319 struct snl_writer nw;
1320 struct snl_errmsg_data e = {};
1321 struct nlmsghdr *hdr;
1322 uint32_t seq_id;
1323 int family_id;
1324
1325 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1326 if (family_id == 0)
1327 return (ENOTSUP);
1328
1329 snl_init_writer(&h->ss, &nw);
1330 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE);
1331 hdr->nlmsg_flags |= NLM_F_DUMP;
1332 snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket);
1333 snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket);
1334 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor);
1335 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call);
1336
1337 snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r);
1338
1339 if ((hdr = snl_finalize_msg(&nw)) == NULL)
1340 return (ENXIO);
1341
1342 seq_id = hdr->nlmsg_seq;
1343
1344 if (! snl_send_message(&h->ss, hdr))
1345 return (ENXIO);
1346
1347 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1348 }
1349
1350 return (e.error);
1351 }
1352
1353 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1354 #define _OUT(_field) offsetof(struct pfctl_rules_info, _field)
1355 static struct snl_attr_parser ap_getrules[] = {
1356 { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
1357 { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
1358 };
1359 static struct snl_field_parser fp_getrules[] = {
1360 };
1361 #undef _IN
1362 #undef _OUT
1363 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, fp_getrules, ap_getrules);
1364
1365 int
pfctl_get_rules_info_h(struct pfctl_handle * h,struct pfctl_rules_info * rules,uint32_t ruleset,const char * path)1366 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset,
1367 const char *path)
1368 {
1369 struct snl_errmsg_data e = {};
1370 struct nlmsghdr *hdr;
1371 struct snl_writer nw;
1372 uint32_t seq_id;
1373 int family_id;
1374
1375 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1376 if (family_id == 0)
1377 return (ENOTSUP);
1378
1379 snl_init_writer(&h->ss, &nw);
1380 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES);
1381 hdr->nlmsg_flags |= NLM_F_DUMP;
1382
1383 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path);
1384 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1385
1386 hdr = snl_finalize_msg(&nw);
1387 if (hdr == NULL)
1388 return (ENOMEM);
1389
1390 seq_id = hdr->nlmsg_seq;
1391 if (! snl_send_message(&h->ss, hdr))
1392 return (ENXIO);
1393
1394 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1395 if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules))
1396 continue;
1397 }
1398
1399 return (e.error);
1400 }
1401
1402 int
pfctl_get_rules_info(int dev __unused,struct pfctl_rules_info * rules,uint32_t ruleset,const char * path)1403 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset,
1404 const char *path)
1405 {
1406 struct pfctl_handle *h;
1407 int error;
1408
1409 h = pfctl_open(PF_DEVICE);
1410 if (h == NULL)
1411 return (ENOTSUP);
1412 error = pfctl_get_rules_info_h(h, rules, ruleset, path);
1413 pfctl_close(h);
1414
1415 return (error);
1416 }
1417
1418 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)1419 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor,
1420 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1421 {
1422 return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule,
1423 anchor_call, false));
1424 }
1425
1426 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)1427 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor,
1428 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1429 {
1430 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule,
1431 anchor_call, false));
1432 }
1433
1434 #define _OUT(_field) offsetof(struct pf_addr_wrap, _field)
1435 static const struct snl_attr_parser ap_addr_wrap[] = {
1436 { .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr },
1437 { .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr },
1438 { .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string },
1439 { .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1440 { .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 },
1441 { .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 },
1442 { .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 },
1443 { .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 },
1444 };
1445 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap);
1446 #undef _OUT
1447
1448 #define _OUT(_field) offsetof(struct pf_rule_addr, _field)
1449 static struct snl_attr_parser ap_rule_addr[] = {
1450 { .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
1451 { .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1452 { .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1453 { .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 },
1454 { .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 },
1455 };
1456 #undef _OUT
1457 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr);
1458
1459 struct snl_parsed_labels
1460 {
1461 char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
1462 uint32_t i;
1463 };
1464
1465 static bool
snl_attr_get_pf_rule_labels(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1466 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1467 const void *arg __unused, void *target)
1468 {
1469 struct snl_parsed_labels *l = (struct snl_parsed_labels *)target;
1470 bool ret;
1471
1472 if (l->i >= PF_RULE_MAX_LABEL_COUNT)
1473 return (E2BIG);
1474
1475 ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE,
1476 l->labels[l->i]);
1477 if (ret)
1478 l->i++;
1479
1480 return (ret);
1481 }
1482
1483 #define _OUT(_field) offsetof(struct nl_parsed_labels, _field)
1484 static const struct snl_attr_parser ap_labels[] = {
1485 { .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels },
1486 };
1487 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels);
1488 #undef _OUT
1489
1490 static bool
snl_attr_get_nested_pf_rule_labels(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1491 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1492 const void *arg __unused, void *target)
1493 {
1494 struct snl_parsed_labels parsed_labels = { };
1495 bool error;
1496
1497 /* Assumes target points to the beginning of the structure */
1498 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels);
1499 if (! error)
1500 return (error);
1501
1502 memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels));
1503
1504 return (true);
1505 }
1506
1507 #define _OUT(_field) offsetof(struct pf_mape_portset, _field)
1508 static const struct snl_attr_parser ap_mape_portset[] = {
1509 { .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 },
1510 { .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 },
1511 {. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 },
1512 };
1513 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset);
1514 #undef _OUT
1515
1516 #define _OUT(_field) offsetof(struct pfctl_pool, _field)
1517 static const struct snl_attr_parser ap_pool[] = {
1518 { .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes },
1519 { .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr },
1520 { .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 },
1521 { .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 },
1522 { .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 },
1523 { .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 },
1524 { .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested },
1525 };
1526 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool);
1527 #undef _OUT
1528
1529 struct nl_parsed_timeouts
1530 {
1531 uint32_t timeouts[PFTM_MAX];
1532 uint32_t i;
1533 };
1534
1535 static bool
snl_attr_get_pf_timeout(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1536 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla,
1537 const void *arg __unused, void *target)
1538 {
1539 struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target;
1540 bool ret;
1541
1542 if (t->i >= PFTM_MAX)
1543 return (E2BIG);
1544
1545 ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]);
1546 if (ret)
1547 t->i++;
1548
1549 return (ret);
1550 }
1551
1552 #define _OUT(_field) offsetof(struct nl_parsed_timeout, _field)
1553 static const struct snl_attr_parser ap_timeouts[] = {
1554 { .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout },
1555 };
1556 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts);
1557 #undef _OUT
1558
1559 static bool
snl_attr_get_nested_timeouts(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1560 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla,
1561 const void *arg __unused, void *target)
1562 {
1563 struct nl_parsed_timeouts parsed_timeouts = { };
1564 bool error;
1565
1566 /* Assumes target points to the beginning of the structure */
1567 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts);
1568 if (! error)
1569 return (error);
1570
1571 memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts));
1572
1573 return (true);
1574 }
1575
1576 #define _OUT(_field) offsetof(struct pf_rule_uid, _field)
1577 static const struct snl_attr_parser ap_rule_uid[] = {
1578 { .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 },
1579 { .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 },
1580 { .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 },
1581 };
1582 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid);
1583 #undef _OUT
1584
1585 struct pfctl_nl_get_rule {
1586 struct pfctl_rule r;
1587 char anchor_call[MAXPATHLEN];
1588 };
1589 #define _OUT(_field) offsetof(struct pfctl_nl_get_rule, _field)
1590 static struct snl_attr_parser ap_getrule[] = {
1591 { .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1592 { .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1593 { .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 },
1594 { .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels },
1595 { .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string },
1596 { .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1597 { .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1598 { .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1599 { .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1600 { .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1601 { .type = PF_RT_RPOOL_RDR, .off = _OUT(r.rdr), .arg = &pool_parser, .cb = snl_attr_get_nested },
1602 { .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 },
1603 { .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 },
1604 { .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts },
1605 { .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 },
1606 { .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 },
1607 { .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 },
1608 { .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 },
1609 { .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 },
1610 { .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 },
1611 { .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 },
1612 { .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 },
1613 { .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 },
1614 { .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 },
1615 { .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 },
1616 {. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 },
1617 { .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 },
1618 { .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 },
1619 { .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 },
1620 { .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 },
1621 { .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1622 { .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1623 { .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 },
1624 { .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 },
1625 { .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 },
1626 { .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 },
1627 { .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 },
1628 { .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 },
1629 { .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 },
1630 { .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 },
1631 { .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 },
1632 { .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 },
1633 { .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 },
1634 { .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 },
1635 { .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 },
1636 { .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 },
1637 { .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 },
1638 { .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 },
1639 { .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 },
1640 { .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 },
1641 { .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 },
1642 { .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 },
1643 { .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 },
1644 { .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 },
1645 { .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 },
1646 { .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 },
1647 { .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 },
1648 { .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 },
1649 { .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 },
1650 { .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 },
1651 { .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr },
1652 { .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 },
1653 { .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 },
1654 { .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 },
1655 { .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 },
1656 { .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 },
1657 { .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 },
1658 { .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 },
1659 { .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 },
1660 { .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 },
1661 { .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 },
1662 { .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string },
1663 { .type = PF_RT_RCV_IFNAME, .off = _OUT(r.rcv_ifname), .arg = (void*)IFNAMSIZ, .cb = snl_attr_copy_string },
1664 { .type = PF_RT_MAX_SRC_CONN, .off = _OUT(r.max_src_conn), .cb = snl_attr_get_uint32 },
1665 { .type = PF_RT_RPOOL_NAT, .off = _OUT(r.nat), .arg = &pool_parser, .cb = snl_attr_get_nested },
1666 { .type = PF_RT_NAF, .off = _OUT(r.naf), .cb = snl_attr_get_uint8 },
1667 };
1668 static struct snl_field_parser fp_getrule[] = {};
1669 #undef _OUT
1670 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, fp_getrule, ap_getrule);
1671
1672 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)1673 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket,
1674 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1675 char *anchor_call, bool clear)
1676 {
1677 struct pfctl_nl_get_rule attrs = {};
1678 struct snl_errmsg_data e = {};
1679 struct nlmsghdr *hdr;
1680 struct snl_writer nw;
1681 uint32_t seq_id;
1682 int family_id;
1683
1684 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1685 if (family_id == 0)
1686 return (ENOTSUP);
1687
1688 snl_init_writer(&h->ss, &nw);
1689 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE);
1690 hdr->nlmsg_flags |= NLM_F_DUMP;
1691
1692 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor);
1693 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1694 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr);
1695 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket);
1696 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear);
1697
1698 hdr = snl_finalize_msg(&nw);
1699 if (hdr == NULL)
1700 return (ENOMEM);
1701
1702 seq_id = hdr->nlmsg_seq;
1703 if (! snl_send_message(&h->ss, hdr))
1704 return (ENXIO);
1705
1706 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1707 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs))
1708 continue;
1709 }
1710
1711 memcpy(rule, &attrs.r, sizeof(attrs.r));
1712 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN);
1713
1714 return (e.error);
1715 }
1716
1717 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)1718 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket,
1719 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1720 char *anchor_call, bool clear)
1721 {
1722 nvlist_t *nvl;
1723 int ret;
1724
1725 nvl = nvlist_create(0);
1726 if (nvl == 0)
1727 return (ENOMEM);
1728
1729 nvlist_add_number(nvl, "nr", nr);
1730 nvlist_add_number(nvl, "ticket", ticket);
1731 nvlist_add_string(nvl, "anchor", anchor);
1732 nvlist_add_number(nvl, "ruleset", ruleset);
1733
1734 if (clear)
1735 nvlist_add_bool(nvl, "clear_counter", true);
1736
1737 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0)
1738 goto out;
1739
1740 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule);
1741
1742 if (anchor_call)
1743 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1744 MAXPATHLEN);
1745
1746 out:
1747 nvlist_destroy(nvl);
1748 return (ret);
1749 }
1750
1751 int
pfctl_set_keepcounters(int dev,bool keep)1752 pfctl_set_keepcounters(int dev, bool keep)
1753 {
1754 struct pfioc_nv nv;
1755 nvlist_t *nvl;
1756 int ret;
1757
1758 nvl = nvlist_create(0);
1759
1760 nvlist_add_bool(nvl, "keep_counters", keep);
1761
1762 nv.data = nvlist_pack(nvl, &nv.len);
1763 nv.size = nv.len;
1764
1765 nvlist_destroy(nvl);
1766
1767 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv);
1768
1769 free(nv.data);
1770 return (ret);
1771 }
1772
1773 struct pfctl_creator {
1774 uint32_t id;
1775 };
1776 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1777 #define _OUT(_field) offsetof(struct pfctl_creator, _field)
1778 static struct snl_attr_parser ap_creators[] = {
1779 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
1780 };
1781 static struct snl_field_parser fp_creators[] = {
1782 };
1783 #undef _IN
1784 #undef _OUT
1785 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, fp_creators, ap_creators);
1786
1787 static int
pfctl_get_creators_nl(struct snl_state * ss,uint32_t * creators,size_t * len)1788 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len)
1789 {
1790
1791 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1792 size_t i = 0;
1793
1794 struct nlmsghdr *hdr;
1795 struct snl_writer nw;
1796
1797 if (family_id == 0)
1798 return (ENOTSUP);
1799
1800 snl_init_writer(ss, &nw);
1801 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS);
1802 hdr->nlmsg_flags |= NLM_F_DUMP;
1803 hdr = snl_finalize_msg(&nw);
1804 if (hdr == NULL)
1805 return (ENOMEM);
1806 uint32_t seq_id = hdr->nlmsg_seq;
1807
1808 snl_send_message(ss, hdr);
1809
1810 struct snl_errmsg_data e = {};
1811 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1812 struct pfctl_creator c;
1813 bzero(&c, sizeof(c));
1814
1815 if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c))
1816 continue;
1817
1818 creators[i] = c.id;
1819 i++;
1820 if (i > *len)
1821 return (E2BIG);
1822 }
1823
1824 *len = i;
1825
1826 return (0);
1827 }
1828
1829 int
pfctl_get_creatorids(struct pfctl_handle * h,uint32_t * creators,size_t * len)1830 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len)
1831 {
1832 int error;
1833
1834 error = pfctl_get_creators_nl(&h->ss, creators, len);
1835
1836 return (error);
1837 }
1838
1839 static inline bool
snl_attr_get_pfaddr(struct snl_state * ss __unused,struct nlattr * nla,const void * arg __unused,void * target)1840 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla,
1841 const void *arg __unused, void *target)
1842 {
1843 memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla));
1844 return (true);
1845 }
1846
1847 static inline bool
snl_attr_store_ifname(struct snl_state * ss __unused,struct nlattr * nla,const void * arg __unused,void * target)1848 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla,
1849 const void *arg __unused, void *target)
1850 {
1851 size_t maxlen = NLA_DATA_LEN(nla);
1852
1853 if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) {
1854 strlcpy(target, (char *)NLA_DATA(nla), maxlen);
1855 return (true);
1856 }
1857 return (false);
1858 }
1859
1860 #define _OUT(_field) offsetof(struct pfctl_state_peer, _field)
1861 static const struct snl_attr_parser nla_p_speer[] = {
1862 { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 },
1863 { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 },
1864 { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 },
1865 { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 },
1866 { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 },
1867 };
1868 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer);
1869 #undef _OUT
1870
1871 #define _OUT(_field) offsetof(struct pfctl_state_key, _field)
1872 static const struct snl_attr_parser nla_p_skey[] = {
1873 { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr },
1874 { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr },
1875 { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1876 { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1877 { .type = PF_STK_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
1878 { .type = PF_STK_PROTO, .off = _OUT(proto), .cb = snl_attr_get_uint16 },
1879 };
1880 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey);
1881 #undef _OUT
1882
1883 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1884 #define _OUT(_field) offsetof(struct pfctl_state, _field)
1885 static struct snl_attr_parser ap_state[] = {
1886 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 },
1887 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 },
1888 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname },
1889 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname },
1890 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1891 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1892 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested },
1893 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested },
1894 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr },
1895 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
1896 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 },
1897 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 },
1898 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 },
1899 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 },
1900 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
1901 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
1902 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
1903 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
1904 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 },
1905 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 },
1906 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 },
1907 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 },
1908 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 },
1909 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 },
1910 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 },
1911 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 },
1912 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 },
1913 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 },
1914 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname },
1915 };
1916 static struct snl_field_parser fp_state[] = {
1917 };
1918 #undef _IN
1919 #undef _OUT
1920 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, fp_state, ap_state);
1921
1922 static const struct snl_hdr_parser *all_parsers[] = {
1923 &state_parser, &skey_parser, &speer_parser,
1924 &creator_parser, &getrules_parser
1925 };
1926
1927 static int
pfctl_get_states_nl(struct pfctl_state_filter * filter,struct snl_state * ss,pfctl_get_state_fn f,void * arg)1928 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg)
1929 {
1930 SNL_VERIFY_PARSERS(all_parsers);
1931 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1932 int ret;
1933
1934 struct nlmsghdr *hdr;
1935 struct snl_writer nw;
1936
1937 if (family_id == 0)
1938 return (ENOTSUP);
1939
1940 snl_init_writer(ss, &nw);
1941 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES);
1942 hdr->nlmsg_flags |= NLM_F_DUMP;
1943 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname);
1944 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto);
1945 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af);
1946 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6);
1947 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6);
1948
1949 hdr = snl_finalize_msg(&nw);
1950 if (hdr == NULL)
1951 return (ENOMEM);
1952
1953 uint32_t seq_id = hdr->nlmsg_seq;
1954
1955 snl_send_message(ss, hdr);
1956
1957 struct snl_errmsg_data e = {};
1958 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1959 struct pfctl_state s;
1960 bzero(&s, sizeof(s));
1961 if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s))
1962 continue;
1963
1964 ret = f(&s, arg);
1965 if (ret != 0)
1966 return (ret);
1967 }
1968
1969 return (0);
1970 }
1971
1972 int
pfctl_get_states_iter(pfctl_get_state_fn f,void * arg)1973 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg)
1974 {
1975 struct pfctl_state_filter filter = {};
1976 return (pfctl_get_filtered_states_iter(&filter, f, arg));
1977 }
1978
1979 int
pfctl_get_filtered_states_iter(struct pfctl_state_filter * filter,pfctl_get_state_fn f,void * arg)1980 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
1981 {
1982 struct snl_state ss = {};
1983 int error;
1984
1985 snl_init(&ss, NETLINK_GENERIC);
1986 error = pfctl_get_states_nl(filter, &ss, f, arg);
1987 snl_free(&ss);
1988
1989 return (error);
1990 }
1991
1992 static int
pfctl_append_states(struct pfctl_state * s,void * arg)1993 pfctl_append_states(struct pfctl_state *s, void *arg)
1994 {
1995 struct pfctl_state *new;
1996 struct pfctl_states *states = (struct pfctl_states *)arg;
1997
1998 new = malloc(sizeof(*s));
1999 if (new == NULL)
2000 return (ENOMEM);
2001
2002 memcpy(new, s, sizeof(*s));
2003
2004 TAILQ_INSERT_TAIL(&states->states, new, entry);
2005
2006 return (0);
2007 }
2008
2009 int
pfctl_get_states(int dev __unused,struct pfctl_states * states)2010 pfctl_get_states(int dev __unused, struct pfctl_states *states)
2011 {
2012 int ret;
2013
2014 bzero(states, sizeof(*states));
2015 TAILQ_INIT(&states->states);
2016
2017 ret = pfctl_get_states_iter(pfctl_append_states, states);
2018 if (ret != 0) {
2019 pfctl_free_states(states);
2020 return (ret);
2021 }
2022
2023 return (0);
2024 }
2025
2026 void
pfctl_free_states(struct pfctl_states * states)2027 pfctl_free_states(struct pfctl_states *states)
2028 {
2029 struct pfctl_state *s, *tmp;
2030
2031 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) {
2032 free(s);
2033 }
2034
2035 bzero(states, sizeof(*states));
2036 }
2037
2038 struct pfctl_nl_clear_states {
2039 uint32_t killed;
2040 };
2041 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field)
2042 static struct snl_attr_parser ap_clear_states[] = {
2043 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 },
2044 };
2045 static struct snl_field_parser fp_clear_states[] = {};
2046 #undef _OUT
2047 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, fp_clear_states, ap_clear_states);
2048
2049 static int
_pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed,int cmd)2050 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2051 unsigned int *killed, int cmd)
2052 {
2053 struct snl_writer nw;
2054 struct snl_errmsg_data e = {};
2055 struct pfctl_nl_clear_states attrs = {};
2056 struct nlmsghdr *hdr;
2057 uint32_t seq_id;
2058 int family_id;
2059
2060 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2061 if (family_id == 0)
2062 return (ENOTSUP);
2063
2064 snl_init_writer(&h->ss, &nw);
2065 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
2066 hdr->nlmsg_flags |= NLM_F_DUMP;
2067
2068 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id);
2069 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid));
2070 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction);
2071 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af);
2072 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto);
2073 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src);
2074 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst);
2075 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr);
2076 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname);
2077 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label);
2078 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match);
2079 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat);
2080
2081 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2082 return (ENXIO);
2083
2084 seq_id = hdr->nlmsg_seq;
2085
2086 if (! snl_send_message(&h->ss, hdr))
2087 return (ENXIO);
2088
2089 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2090 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs))
2091 continue;
2092 }
2093
2094 if (killed)
2095 *killed = attrs.killed;
2096
2097 return (e.error);
2098 }
2099
2100 int
pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2101 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2102 unsigned int *killed)
2103 {
2104 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES));
2105 }
2106
2107 int
pfctl_kill_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2108 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2109 unsigned int *killed)
2110 {
2111 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES));
2112 }
2113
2114 static int
_pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed,uint64_t cmd)2115 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2116 unsigned int *killed, uint64_t cmd)
2117 {
2118 struct pfctl_handle *h;
2119 int ret;
2120
2121 h = pfctl_open(PF_DEVICE);
2122 if (h == NULL)
2123 return (ENODEV);
2124
2125 ret = _pfctl_clear_states_h(h, kill, killed, cmd);
2126 pfctl_close(h);
2127
2128 return (ret);
2129 }
2130
2131 int
pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2132 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2133 unsigned int *killed)
2134 {
2135 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES));
2136 }
2137
2138 int
pfctl_kill_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2139 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed)
2140 {
2141 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES));
2142 }
2143
2144 int
pfctl_clear_rules(int dev,const char * anchorname)2145 pfctl_clear_rules(int dev, const char *anchorname)
2146 {
2147 struct pfioc_trans trans;
2148 struct pfioc_trans_e transe[2];
2149 int ret;
2150
2151 bzero(&trans, sizeof(trans));
2152 bzero(&transe, sizeof(transe));
2153
2154 transe[0].rs_num = PF_RULESET_SCRUB;
2155 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2156 >= sizeof(transe[0].anchor))
2157 return (E2BIG);
2158
2159 transe[1].rs_num = PF_RULESET_FILTER;
2160 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2161 >= sizeof(transe[1].anchor))
2162 return (E2BIG);
2163
2164 trans.size = 2;
2165 trans.esize = sizeof(transe[0]);
2166 trans.array = transe;
2167
2168 ret = ioctl(dev, DIOCXBEGIN, &trans);
2169 if (ret != 0)
2170 return (errno);
2171 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2172 if (ret != 0)
2173 return (errno);
2174
2175 return (0);
2176 }
2177
2178 int
pfctl_clear_nat(int dev,const char * anchorname)2179 pfctl_clear_nat(int dev, const char *anchorname)
2180 {
2181 struct pfioc_trans trans;
2182 struct pfioc_trans_e transe[3];
2183 int ret;
2184
2185 bzero(&trans, sizeof(trans));
2186 bzero(&transe, sizeof(transe));
2187
2188 transe[0].rs_num = PF_RULESET_NAT;
2189 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2190 >= sizeof(transe[0].anchor))
2191 return (E2BIG);
2192
2193 transe[1].rs_num = PF_RULESET_BINAT;
2194 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2195 >= sizeof(transe[0].anchor))
2196 return (E2BIG);
2197
2198 transe[2].rs_num = PF_RULESET_RDR;
2199 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor))
2200 >= sizeof(transe[2].anchor))
2201 return (E2BIG);
2202
2203 trans.size = 3;
2204 trans.esize = sizeof(transe[0]);
2205 trans.array = transe;
2206
2207 ret = ioctl(dev, DIOCXBEGIN, &trans);
2208 if (ret != 0)
2209 return (errno);
2210 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2211 if (ret != 0)
2212 return (errno);
2213
2214 return (0);
2215 }
2216
2217 int
pfctl_clear_eth_rules(int dev,const char * anchorname)2218 pfctl_clear_eth_rules(int dev, const char *anchorname)
2219 {
2220 struct pfioc_trans trans;
2221 struct pfioc_trans_e transe;
2222 int ret;
2223
2224 bzero(&trans, sizeof(trans));
2225 bzero(&transe, sizeof(transe));
2226
2227 transe.rs_num = PF_RULESET_ETH;
2228 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor))
2229 >= sizeof(transe.anchor))
2230 return (E2BIG);
2231
2232 trans.size = 1;
2233 trans.esize = sizeof(transe);
2234 trans.array = &transe;
2235
2236 ret = ioctl(dev, DIOCXBEGIN, &trans);
2237 if (ret != 0)
2238 return (errno);
2239 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2240 if (ret != 0)
2241 return (errno);
2242
2243 return (0);
2244 }
2245
2246 static int
_pfctl_get_limit(int dev,const int index,uint * limit)2247 _pfctl_get_limit(int dev, const int index, uint *limit)
2248 {
2249 struct pfioc_limit pl;
2250
2251 bzero(&pl, sizeof(pl));
2252 pl.index = index;
2253
2254 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1)
2255 return (errno);
2256
2257 *limit = pl.limit;
2258
2259 return (0);
2260 }
2261
2262 int
pfctl_set_syncookies(int dev,const struct pfctl_syncookies * s)2263 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s)
2264 {
2265 struct pfioc_nv nv;
2266 nvlist_t *nvl;
2267 int ret;
2268 uint state_limit;
2269 uint64_t lim, hi, lo;
2270
2271 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2272 if (ret != 0)
2273 return (ret);
2274
2275 lim = state_limit;
2276 hi = lim * s->highwater / 100;
2277 lo = lim * s->lowwater / 100;
2278
2279 if (lo == hi)
2280 hi++;
2281
2282 nvl = nvlist_create(0);
2283
2284 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER);
2285 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE);
2286 nvlist_add_number(nvl, "highwater", hi);
2287 nvlist_add_number(nvl, "lowwater", lo);
2288
2289 nv.data = nvlist_pack(nvl, &nv.len);
2290 nv.size = nv.len;
2291 nvlist_destroy(nvl);
2292 nvl = NULL;
2293
2294 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv);
2295
2296 free(nv.data);
2297 if (ret != 0)
2298 return (errno);
2299
2300 return (0);
2301 }
2302
2303 int
pfctl_get_syncookies(int dev,struct pfctl_syncookies * s)2304 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s)
2305 {
2306 nvlist_t *nvl;
2307 int ret;
2308 uint state_limit;
2309 bool enabled, adaptive;
2310
2311 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2312 if (ret != 0)
2313 return (ret);
2314
2315 bzero(s, sizeof(*s));
2316
2317 nvl = nvlist_create(0);
2318
2319 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) {
2320 ret = errno;
2321 goto out;
2322 }
2323
2324 enabled = nvlist_get_bool(nvl, "enabled");
2325 adaptive = nvlist_get_bool(nvl, "adaptive");
2326
2327 if (enabled) {
2328 if (adaptive)
2329 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE;
2330 else
2331 s->mode = PFCTL_SYNCOOKIES_ALWAYS;
2332 } else {
2333 s->mode = PFCTL_SYNCOOKIES_NEVER;
2334 }
2335
2336 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit;
2337 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit;
2338 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states");
2339
2340 out:
2341 nvlist_destroy(nvl);
2342 return (ret);
2343 }
2344
2345 int
pfctl_table_add_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * nadd,int flags)2346 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2347 *addr, int size, int *nadd, int flags)
2348 {
2349 struct pfioc_table io;
2350
2351 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2352 return (EINVAL);
2353 }
2354 bzero(&io, sizeof io);
2355 io.pfrio_flags = flags;
2356 io.pfrio_table = *tbl;
2357 io.pfrio_buffer = addr;
2358 io.pfrio_esize = sizeof(*addr);
2359 io.pfrio_size = size;
2360
2361 if (ioctl(dev, DIOCRADDADDRS, &io))
2362 return (errno);
2363 if (nadd != NULL)
2364 *nadd = io.pfrio_nadd;
2365 return (0);
2366 }
2367
2368 int
pfctl_table_del_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * ndel,int flags)2369 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2370 *addr, int size, int *ndel, int flags)
2371 {
2372 struct pfioc_table io;
2373
2374 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2375 return (EINVAL);
2376 }
2377 bzero(&io, sizeof io);
2378 io.pfrio_flags = flags;
2379 io.pfrio_table = *tbl;
2380 io.pfrio_buffer = addr;
2381 io.pfrio_esize = sizeof(*addr);
2382 io.pfrio_size = size;
2383
2384 if (ioctl(dev, DIOCRDELADDRS, &io))
2385 return (errno);
2386 if (ndel != NULL)
2387 *ndel = io.pfrio_ndel;
2388 return (0);
2389 }
2390
2391 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)2392 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2393 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags)
2394 {
2395 struct pfioc_table io;
2396
2397 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2398 return (EINVAL);
2399 }
2400 bzero(&io, sizeof io);
2401 io.pfrio_flags = flags;
2402 io.pfrio_table = *tbl;
2403 io.pfrio_buffer = addr;
2404 io.pfrio_esize = sizeof(*addr);
2405 io.pfrio_size = size;
2406 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0;
2407 if (ioctl(dev, DIOCRSETADDRS, &io))
2408 return (errno);
2409 if (nadd != NULL)
2410 *nadd = io.pfrio_nadd;
2411 if (ndel != NULL)
2412 *ndel = io.pfrio_ndel;
2413 if (nchange != NULL)
2414 *nchange = io.pfrio_nchange;
2415 if (size2 != NULL)
2416 *size2 = io.pfrio_size2;
2417 return (0);
2418 }
2419
pfctl_table_get_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int * size,int flags)2420 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr,
2421 int *size, int flags)
2422 {
2423 struct pfioc_table io;
2424
2425 if (tbl == NULL || size == NULL || *size < 0 ||
2426 (*size && addr == NULL)) {
2427 return (EINVAL);
2428 }
2429 bzero(&io, sizeof io);
2430 io.pfrio_flags = flags;
2431 io.pfrio_table = *tbl;
2432 io.pfrio_buffer = addr;
2433 io.pfrio_esize = sizeof(*addr);
2434 io.pfrio_size = *size;
2435 if (ioctl(dev, DIOCRGETADDRS, &io))
2436 return (errno);
2437 *size = io.pfrio_size;
2438 return (0);
2439 }
2440
2441 int
pfctl_set_statusif(struct pfctl_handle * h,const char * ifname)2442 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname)
2443 {
2444 struct snl_writer nw;
2445 struct snl_errmsg_data e = {};
2446 struct nlmsghdr *hdr;
2447 uint32_t seq_id;
2448 int family_id;
2449
2450 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2451 if (family_id == 0)
2452 return (ENOTSUP);
2453
2454 snl_init_writer(&h->ss, &nw);
2455 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF);
2456
2457 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname);
2458
2459 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2460 return (ENXIO);
2461
2462 seq_id = hdr->nlmsg_seq;
2463
2464 if (! snl_send_message(&h->ss, hdr))
2465 return (ENXIO);
2466
2467 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2468 }
2469
2470 return (e.error);
2471 }
2472
2473 #define _IN(_field) offsetof(struct genlmsghdr, _field)
2474 #define _OUT(_field) offsetof(struct pfctl_natlook, _field)
2475 static struct snl_attr_parser ap_natlook[] = {
2476 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr },
2477 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr },
2478 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 },
2479 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 },
2480 };
2481 static struct snl_field_parser fp_natlook[] = {};
2482 #undef _IN
2483 #undef _OUT
2484 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, fp_natlook, ap_natlook);
2485
2486 int
pfctl_natlook(struct pfctl_handle * h,const struct pfctl_natlook_key * k,struct pfctl_natlook * r)2487 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k,
2488 struct pfctl_natlook *r)
2489 {
2490 struct snl_writer nw;
2491 struct snl_errmsg_data e = {};
2492 struct nlmsghdr *hdr;
2493 uint32_t seq_id;
2494 int family_id;
2495
2496 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2497 if (family_id == 0)
2498 return (ENOTSUP);
2499
2500 snl_init_writer(&h->ss, &nw);
2501 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK);
2502 hdr->nlmsg_flags |= NLM_F_DUMP;
2503
2504 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af);
2505 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction);
2506 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto);
2507 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6);
2508 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6);
2509 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport);
2510 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport);
2511
2512 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2513 return (ENXIO);
2514
2515 seq_id = hdr->nlmsg_seq;
2516
2517 if (! snl_send_message(&h->ss, hdr))
2518 return (ENXIO);
2519
2520 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2521 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r))
2522 continue;
2523 }
2524
2525 return (e.error);
2526 }
2527
2528 int
pfctl_set_debug(struct pfctl_handle * h,uint32_t level)2529 pfctl_set_debug(struct pfctl_handle *h, uint32_t level)
2530 {
2531 struct snl_writer nw;
2532 struct snl_errmsg_data e = {};
2533 struct nlmsghdr *hdr;
2534 uint32_t seq_id;
2535 int family_id;
2536
2537 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2538 if (family_id == 0)
2539 return (ENOTSUP);
2540
2541 snl_init_writer(&h->ss, &nw);
2542 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG);
2543
2544 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level);
2545
2546 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2547 return (ENXIO);
2548
2549 seq_id = hdr->nlmsg_seq;
2550
2551 if (! snl_send_message(&h->ss, hdr))
2552 return (ENXIO);
2553
2554 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2555 }
2556
2557 return (e.error);
2558 }
2559
2560 int
pfctl_set_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t seconds)2561 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds)
2562 {
2563 struct snl_writer nw;
2564 struct snl_errmsg_data e = {};
2565 struct nlmsghdr *hdr;
2566 uint32_t seq_id;
2567 int family_id;
2568
2569 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2570 if (family_id == 0)
2571 return (ENOTSUP);
2572
2573 snl_init_writer(&h->ss, &nw);
2574 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT);
2575
2576 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2577 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds);
2578
2579 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2580 return (ENXIO);
2581
2582 seq_id = hdr->nlmsg_seq;
2583
2584 if (! snl_send_message(&h->ss, hdr))
2585 return (ENXIO);
2586
2587 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2588 }
2589
2590 return (e.error);
2591 }
2592
2593 struct pfctl_nl_timeout {
2594 uint32_t seconds;
2595 };
2596 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field)
2597 static struct snl_attr_parser ap_get_timeout[] = {
2598 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
2599 };
2600 static struct snl_field_parser fp_get_timeout[] = {};
2601 #undef _OUT
2602 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, fp_get_timeout, ap_get_timeout);
2603
2604 int
pfctl_get_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t * seconds)2605 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds)
2606 {
2607 struct snl_writer nw;
2608 struct pfctl_nl_timeout to = {};
2609 struct snl_errmsg_data e = {};
2610 struct nlmsghdr *hdr;
2611 uint32_t seq_id;
2612 int family_id;
2613
2614 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2615 if (family_id == 0)
2616 return (ENOTSUP);
2617
2618 snl_init_writer(&h->ss, &nw);
2619 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT);
2620 hdr->nlmsg_flags |= NLM_F_DUMP;
2621
2622 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2623
2624 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2625 return (ENXIO);
2626
2627 seq_id = hdr->nlmsg_seq;
2628
2629 if (! snl_send_message(&h->ss, hdr))
2630 return (ENXIO);
2631
2632 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2633 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to))
2634 continue;
2635 }
2636
2637 if (seconds != NULL)
2638 *seconds = to.seconds;
2639
2640 return (e.error);
2641 }
2642
2643 int
pfctl_set_limit(struct pfctl_handle * h,const int index,const uint limit)2644 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit)
2645 {
2646 struct snl_writer nw;
2647 struct snl_errmsg_data e = {};
2648 struct nlmsghdr *hdr;
2649 uint32_t seq_id;
2650 int family_id;
2651
2652 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2653 if (family_id == 0)
2654 return (ENOTSUP);
2655
2656 snl_init_writer(&h->ss, &nw);
2657 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT);
2658
2659 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2660 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit);
2661
2662 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2663 return (ENXIO);
2664
2665 seq_id = hdr->nlmsg_seq;
2666
2667 if (! snl_send_message(&h->ss, hdr))
2668 return (ENXIO);
2669
2670 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2671 }
2672
2673 return (e.error);
2674 }
2675
2676 struct pfctl_nl_limit {
2677 unsigned int limit;
2678 };
2679 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field)
2680 static struct snl_attr_parser ap_get_limit[] = {
2681 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
2682 };
2683 static struct snl_field_parser fp_get_limit[] = {};
2684 #undef _OUT
2685 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, fp_get_limit, ap_get_limit);
2686
2687 int
pfctl_get_limit(struct pfctl_handle * h,const int index,uint * limit)2688 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit)
2689 {
2690 struct snl_writer nw;
2691 struct pfctl_nl_limit li = {};
2692 struct snl_errmsg_data e = {};
2693 struct nlmsghdr *hdr;
2694 uint32_t seq_id;
2695 int family_id;
2696
2697 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2698 if (family_id == 0)
2699 return (ENOTSUP);
2700
2701 snl_init_writer(&h->ss, &nw);
2702 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT);
2703 hdr->nlmsg_flags |= NLM_F_DUMP;
2704
2705 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2706
2707 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2708 return (ENXIO);
2709
2710 seq_id = hdr->nlmsg_seq;
2711
2712 if (! snl_send_message(&h->ss, hdr))
2713 return (ENXIO);
2714
2715 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2716 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li))
2717 continue;
2718 }
2719
2720 if (limit != NULL)
2721 *limit = li.limit;
2722
2723 return (e.error);
2724 }
2725
2726 struct pfctl_nl_begin_addrs {
2727 uint32_t ticket;
2728 };
2729 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field)
2730 static struct snl_attr_parser ap_begin_addrs[] = {
2731 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2732 };
2733 static struct snl_field_parser fp_begin_addrs[] = {};
2734 #undef _OUT
2735 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, fp_begin_addrs, ap_begin_addrs);
2736
2737 int
pfctl_begin_addrs(struct pfctl_handle * h,uint32_t * ticket)2738 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket)
2739 {
2740 struct snl_writer nw;
2741 struct pfctl_nl_begin_addrs attrs = {};
2742 struct snl_errmsg_data e = {};
2743 struct nlmsghdr *hdr;
2744 uint32_t seq_id;
2745 int family_id;
2746
2747 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2748 if (family_id == 0)
2749 return (ENOTSUP);
2750
2751 snl_init_writer(&h->ss, &nw);
2752 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS);
2753 hdr->nlmsg_flags |= NLM_F_DUMP;
2754
2755 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2756 return (ENXIO);
2757
2758 seq_id = hdr->nlmsg_seq;
2759
2760 if (! snl_send_message(&h->ss, hdr))
2761 return (ENXIO);
2762
2763 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2764 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs))
2765 continue;
2766 }
2767
2768 if (ticket != NULL)
2769 *ticket = attrs.ticket;
2770
2771 return (e.error);
2772 }
2773
2774 int
pfctl_add_addr(struct pfctl_handle * h,const struct pfioc_pooladdr * pa,int which)2775 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which)
2776 {
2777 struct snl_writer nw;
2778 struct snl_errmsg_data e = {};
2779 struct nlmsghdr *hdr;
2780 uint32_t seq_id;
2781 int family_id;
2782
2783 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2784 if (family_id == 0)
2785 return (ENOTSUP);
2786
2787 snl_init_writer(&h->ss, &nw);
2788 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR);
2789
2790 snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action);
2791 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket);
2792 snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr);
2793 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num);
2794 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action);
2795 snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last);
2796 snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af);
2797 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor);
2798 snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr);
2799 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
2800
2801 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2802 return (ENXIO);
2803
2804 seq_id = hdr->nlmsg_seq;
2805
2806 if (! snl_send_message(&h->ss, hdr))
2807 return (ENXIO);
2808
2809 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2810 }
2811
2812 return (e.error);
2813 }
2814
2815 static const struct snl_attr_parser ap_get_addrs[] = {
2816 { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 },
2817 };
2818 static struct snl_field_parser fp_get_addrs[] = {};
2819 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, fp_get_addrs, ap_get_addrs);
2820
2821 int
pfctl_get_addrs(struct pfctl_handle * h,uint32_t ticket,uint32_t r_num,uint8_t r_action,const char * anchor,uint32_t * nr,int which)2822 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2823 uint8_t r_action, const char *anchor, uint32_t *nr, int which)
2824 {
2825 struct snl_writer nw;
2826 struct snl_errmsg_data e = {};
2827 struct nlmsghdr *hdr;
2828 uint32_t seq_id;
2829 int family_id;
2830
2831 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2832 if (family_id == 0)
2833 return (ENOTSUP);
2834
2835 snl_init_writer(&h->ss, &nw);
2836 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS);
2837
2838 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2839 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2840 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2841 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2842 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
2843
2844 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2845 return (ENXIO);
2846
2847 seq_id = hdr->nlmsg_seq;
2848
2849 if (! snl_send_message(&h->ss, hdr))
2850 return (ENXIO);
2851
2852 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2853 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr))
2854 continue;
2855 }
2856
2857 return (e.error);
2858 }
2859
2860 #define _OUT(_field) offsetof(struct pf_pooladdr, _field)
2861 static const struct snl_attr_parser ap_pool_addr[] = {
2862 { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
2863 { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
2864 };
2865 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr);
2866 #undef _OUT
2867
2868 #define _OUT(_field) offsetof(struct pfioc_pooladdr, _field)
2869 static const struct snl_attr_parser ap_get_addr[] = {
2870 { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 },
2871 { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2872 { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
2873 { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 },
2874 { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 },
2875 { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 },
2876 { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
2877 { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string },
2878 { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested },
2879 };
2880 static struct snl_field_parser fp_get_addr[] = {};
2881 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, fp_get_addr, ap_get_addr);
2882 #undef _OUT
2883
2884 int
pfctl_get_addr(struct pfctl_handle * h,uint32_t ticket,uint32_t r_num,uint8_t r_action,const char * anchor,uint32_t nr,struct pfioc_pooladdr * pa,int which)2885 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2886 uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa,
2887 int which)
2888 {
2889 struct snl_writer nw;
2890 struct snl_errmsg_data e = {};
2891 struct nlmsghdr *hdr;
2892 uint32_t seq_id;
2893 int family_id;
2894
2895 family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2896 if (family_id == 0)
2897 return (ENOTSUP);
2898
2899 snl_init_writer(&h->ss, &nw);
2900 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR);
2901
2902 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2903 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2904 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2905 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2906 snl_add_msg_attr_u32(&nw, PF_AA_NR, nr);
2907 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
2908
2909 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2910 return (ENXIO);
2911
2912 seq_id = hdr->nlmsg_seq;
2913
2914 if (! snl_send_message(&h->ss, hdr))
2915 return (ENXIO);
2916
2917 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2918 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa))
2919 continue;
2920 }
2921
2922 return (e.error);
2923 }
2924
2925 #define _OUT(_field) offsetof(struct pfioc_ruleset, _field)
2926 static const struct snl_attr_parser ap_ruleset[] = {
2927 { .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
2928 { .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string },
2929 };
2930 static struct snl_field_parser fp_ruleset[] = {};
2931 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, fp_ruleset, ap_ruleset);
2932 #undef _OUT
2933
2934 int
pfctl_get_rulesets(struct pfctl_handle * h,const char * path,uint32_t * nr)2935 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr)
2936 {
2937 struct snl_writer nw;
2938 struct snl_errmsg_data e = {};
2939 struct nlmsghdr *hdr;
2940 struct pfioc_ruleset rs = {};
2941 uint32_t seq_id;
2942 int family_id;
2943
2944 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2945 if (family_id == 0)
2946 return (ENOTSUP);
2947
2948 snl_init_writer(&h->ss, &nw);
2949 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS);
2950
2951 snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
2952
2953 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2954 return (ENXIO);
2955
2956 seq_id = hdr->nlmsg_seq;
2957
2958 if (! snl_send_message(&h->ss, hdr))
2959 return (ENXIO);
2960
2961 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2962 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs))
2963 continue;
2964 }
2965
2966 *nr = rs.nr;
2967
2968 return (e.error);
2969 }
2970
2971 int
pfctl_get_ruleset(struct pfctl_handle * h,const char * path,uint32_t nr,struct pfioc_ruleset * rs)2972 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs)
2973 {
2974 struct snl_writer nw;
2975 struct snl_errmsg_data e = {};
2976 struct nlmsghdr *hdr;
2977 uint32_t seq_id;
2978 int family_id;
2979
2980 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2981 if (family_id == 0)
2982 return (ENOTSUP);
2983
2984 snl_init_writer(&h->ss, &nw);
2985 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET);
2986
2987 snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
2988 snl_add_msg_attr_u32(&nw, PF_RS_NR, nr);
2989
2990 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2991 return (ENXIO);
2992
2993 seq_id = hdr->nlmsg_seq;
2994
2995 if (! snl_send_message(&h->ss, hdr))
2996 return (ENXIO);
2997
2998 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2999 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs))
3000 continue;
3001 }
3002
3003 return (e.error);
3004 }
3005
3006 #define _OUT(_field) offsetof(struct pfctl_threshold, _field)
3007 static const struct snl_attr_parser ap_pfctl_threshold[] = {
3008 { .type = PF_TH_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
3009 { .type = PF_TH_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
3010 { .type = PF_TH_COUNT, .off = _OUT(count), .cb = snl_attr_get_uint32 },
3011 { .type = PF_TH_LAST, .off = _OUT(last), .cb = snl_attr_get_uint32 },
3012 };
3013 SNL_DECLARE_ATTR_PARSER(pfctl_threshold_parser, ap_pfctl_threshold);
3014 #undef _OUT
3015
3016 #define _OUT(_field) offsetof(struct pfctl_src_node, _field)
3017 static struct snl_attr_parser ap_srcnode[] = {
3018 { .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr },
3019 { .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr },
3020 { .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
3021 { .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
3022 { .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
3023 { .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
3024 { .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
3025 { .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
3026 { .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 },
3027 { .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
3028 { .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 },
3029 { .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 },
3030 { .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 },
3031 { .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested },
3032 { .type = PF_SN_NAF, .off = _OUT(naf), .cb = snl_attr_get_uint8 },
3033 };
3034 static struct snl_field_parser fp_srcnode[] = {};
3035 #undef _OUT
3036 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, fp_srcnode, ap_srcnode);
3037
3038 int
pfctl_get_srcnodes(struct pfctl_handle * h,pfctl_get_srcnode_fn fn,void * arg)3039 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg)
3040 {
3041 struct snl_writer nw;
3042 struct pfctl_src_node sn;
3043 struct snl_errmsg_data e = {};
3044 struct nlmsghdr *hdr;
3045 uint32_t seq_id;
3046 int family_id;
3047 int ret;
3048
3049 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3050 if (family_id == 0)
3051 return (ENOTSUP);
3052
3053 snl_init_writer(&h->ss, &nw);
3054 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES);
3055
3056 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3057 return (ENXIO);
3058
3059 seq_id = hdr->nlmsg_seq;
3060
3061 if (!snl_send_message(&h->ss, hdr))
3062 return (ENXIO);
3063
3064 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3065 if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn))
3066 continue;
3067
3068 ret = fn(&sn, arg);
3069 if (ret != 0)
3070 return (ret);
3071 }
3072
3073 return (e.error);
3074 }
3075