1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2021 Rubicon Communications, LLC (Netgate)
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33
34 #include <sys/ioctl.h>
35 #include <sys/nv.h>
36 #include <sys/queue.h>
37 #include <sys/types.h>
38
39 #include <net/if.h>
40 #include <net/pfvar.h>
41 #include <netinet/in.h>
42
43 #include <netpfil/pf/pf_nl.h>
44 #include <netlink/netlink.h>
45 #include <netlink/netlink_generic.h>
46 #include <netlink/netlink_snl.h>
47 #include <netlink/netlink_snl_generic.h>
48 #include <netlink/netlink_snl_route.h>
49
50 #include <assert.h>
51 #include <err.h>
52 #include <errno.h>
53 #include <fcntl.h>
54 #include <stdlib.h>
55 #include <string.h>
56
57 #include "libpfctl.h"
58
59 struct pfctl_handle {
60 int fd;
61 struct snl_state ss;
62 };
63
64 const char* PFCTL_SYNCOOKIES_MODE_NAMES[] = {
65 "never",
66 "always",
67 "adaptive"
68 };
69
70 static int _pfctl_clear_states(int , const struct pfctl_kill *,
71 unsigned int *, uint64_t);
72
73 struct pfctl_handle *
pfctl_open(const char * pf_device)74 pfctl_open(const char *pf_device)
75 {
76 struct pfctl_handle *h;
77
78 h = calloc(1, sizeof(struct pfctl_handle));
79 h->fd = -1;
80
81 h->fd = open(pf_device, O_RDWR);
82 if (h->fd < 0)
83 goto error;
84
85 if (!snl_init(&h->ss, NETLINK_GENERIC))
86 goto error;
87
88 return (h);
89 error:
90 close(h->fd);
91 snl_free(&h->ss);
92 free(h);
93
94 return (NULL);
95 }
96
97 void
pfctl_close(struct pfctl_handle * h)98 pfctl_close(struct pfctl_handle *h)
99 {
100 close(h->fd);
101 snl_free(&h->ss);
102 free(h);
103 }
104
105 int
pfctl_fd(struct pfctl_handle * h)106 pfctl_fd(struct pfctl_handle *h)
107 {
108 return (h->fd);
109 }
110
111 static int
pfctl_do_netlink_cmd(struct pfctl_handle * h,uint cmd)112 pfctl_do_netlink_cmd(struct pfctl_handle *h, uint cmd)
113 {
114 struct snl_errmsg_data e = {};
115 struct snl_writer nw;
116 struct nlmsghdr *hdr;
117 uint32_t seq_id;
118 int family_id;
119
120 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
121 if (family_id == 0)
122 return (ENOTSUP);
123
124 snl_init_writer(&h->ss, &nw);
125 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
126
127 hdr = snl_finalize_msg(&nw);
128 if (hdr == NULL)
129 return (ENOMEM);
130 seq_id = hdr->nlmsg_seq;
131
132 snl_send_message(&h->ss, hdr);
133
134 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
135 }
136
137 return (e.error);
138 }
139
140 static int
pfctl_do_ioctl(int dev,uint cmd,size_t size,nvlist_t ** nvl)141 pfctl_do_ioctl(int dev, uint cmd, size_t size, nvlist_t **nvl)
142 {
143 struct pfioc_nv nv;
144 void *data;
145 size_t nvlen;
146 int ret;
147
148 data = nvlist_pack(*nvl, &nvlen);
149 if (nvlen > size)
150 size = nvlen;
151
152 retry:
153 nv.data = malloc(size);
154 if (nv.data == NULL) {
155 ret = ENOMEM;
156 goto out;
157 }
158
159 memcpy(nv.data, data, nvlen);
160
161 nv.len = nvlen;
162 nv.size = size;
163
164 ret = ioctl(dev, cmd, &nv);
165 if (ret == -1 && errno == ENOSPC) {
166 size *= 2;
167 free(nv.data);
168 goto retry;
169 }
170
171 nvlist_destroy(*nvl);
172 *nvl = NULL;
173
174 if (ret == 0) {
175 *nvl = nvlist_unpack(nv.data, nv.len, 0);
176 if (*nvl == NULL) {
177 ret = EIO;
178 goto out;
179 }
180 } else {
181 ret = errno;
182 }
183
184 out:
185 free(data);
186 free(nv.data);
187
188 return (ret);
189 }
190
191 static void
pf_nvuint_8_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint8_t * numbers,size_t * nelems)192 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems,
193 uint8_t *numbers, size_t *nelems)
194 {
195 const uint64_t *tmp;
196 size_t elems;
197
198 tmp = nvlist_get_number_array(nvl, name, &elems);
199 assert(elems <= maxelems);
200
201 for (size_t i = 0; i < elems; i++)
202 numbers[i] = tmp[i];
203
204 if (nelems)
205 *nelems = elems;
206 }
207
208 static void
pf_nvuint_16_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint16_t * numbers,size_t * nelems)209 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems,
210 uint16_t *numbers, size_t *nelems)
211 {
212 const uint64_t *tmp;
213 size_t elems;
214
215 tmp = nvlist_get_number_array(nvl, name, &elems);
216 assert(elems <= maxelems);
217
218 for (size_t i = 0; i < elems; i++)
219 numbers[i] = tmp[i];
220
221 if (nelems)
222 *nelems = elems;
223 }
224
225 static void
pf_nvuint_32_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint32_t * numbers,size_t * nelems)226 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems,
227 uint32_t *numbers, size_t *nelems)
228 {
229 const uint64_t *tmp;
230 size_t elems;
231
232 tmp = nvlist_get_number_array(nvl, name, &elems);
233
234 for (size_t i = 0; i < elems && i < maxelems; i++)
235 numbers[i] = tmp[i];
236
237 if (nelems)
238 *nelems = elems;
239 }
240
241 static void
pf_nvuint_64_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint64_t * numbers,size_t * nelems)242 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems,
243 uint64_t *numbers, size_t *nelems)
244 {
245 const uint64_t *tmp;
246 size_t elems;
247
248 tmp = nvlist_get_number_array(nvl, name, &elems);
249 assert(elems <= maxelems);
250
251 for (size_t i = 0; i < elems; i++)
252 numbers[i] = tmp[i];
253
254 if (nelems)
255 *nelems = elems;
256 }
257
258 int
pfctl_startstop(struct pfctl_handle * h,int start)259 pfctl_startstop(struct pfctl_handle *h, int start)
260 {
261 return (pfctl_do_netlink_cmd(h, start ? PFNL_CMD_START : PFNL_CMD_STOP));
262 }
263
264 static void
_pfctl_get_status_counters(const nvlist_t * nvl,struct pfctl_status_counters * counters)265 _pfctl_get_status_counters(const nvlist_t *nvl,
266 struct pfctl_status_counters *counters)
267 {
268 const uint64_t *ids, *counts;
269 const char *const *names;
270 size_t id_len, counter_len, names_len;
271
272 ids = nvlist_get_number_array(nvl, "ids", &id_len);
273 counts = nvlist_get_number_array(nvl, "counters", &counter_len);
274 names = nvlist_get_string_array(nvl, "names", &names_len);
275 assert(id_len == counter_len);
276 assert(counter_len == names_len);
277
278 TAILQ_INIT(counters);
279
280 for (size_t i = 0; i < id_len; i++) {
281 struct pfctl_status_counter *c;
282
283 c = malloc(sizeof(*c));
284 if (c == NULL)
285 continue;
286
287 c->id = ids[i];
288 c->counter = counts[i];
289 c->name = strdup(names[i]);
290
291 TAILQ_INSERT_TAIL(counters, c, entry);
292 }
293 }
294
295 #define _OUT(_field) offsetof(struct pfctl_status_counter, _field)
296 static const struct snl_attr_parser ap_counter[] = {
297 { .type = PF_C_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_uint64 },
298 { .type = PF_C_NAME, .off = _OUT(name), .cb = snl_attr_get_string },
299 { .type = PF_C_ID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
300 };
301 SNL_DECLARE_ATTR_PARSER(counter_parser, ap_counter);
302 #undef _OUT
303
304 static bool
snl_attr_get_counters(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)305 snl_attr_get_counters(struct snl_state *ss, struct nlattr *nla,
306 const void *arg __unused, void *target)
307 {
308 struct pfctl_status_counter counter = {};
309 struct pfctl_status_counter *c;
310 bool error;
311
312 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &counter_parser, &counter);
313 if (! error)
314 return (error);
315
316 c = malloc(sizeof(*c));
317 if (c == NULL)
318 return (false);
319
320 c->id = counter.id;
321 c->counter = counter.counter;
322 c->name = strdup(counter.name);
323
324 TAILQ_INSERT_TAIL((struct pfctl_status_counters *)target, c, entry);
325
326 return (error);
327 }
328
329 struct snl_uint64_array {
330 uint64_t *array;
331 size_t count;
332 size_t max;
333 };
334 static bool
snl_attr_get_uint64_element(struct snl_state * ss,struct nlattr * nla,const void * arg,void * target)335 snl_attr_get_uint64_element(struct snl_state *ss, struct nlattr *nla,
336 const void *arg, void *target)
337 {
338 bool error;
339 uint64_t value;
340 struct snl_uint64_array *t = (struct snl_uint64_array *)target;
341
342 if (t->count >= t->max)
343 return (false);
344
345 error = snl_attr_get_uint64(ss, nla, arg, &value);
346 if (! error)
347 return (error);
348
349 t->array[t->count++] = value;
350
351 return (true);
352 }
353
354 static const struct snl_attr_parser ap_array[] = {
355 { .cb = snl_attr_get_uint64_element },
356 };
357 SNL_DECLARE_ATTR_PARSER(array_parser, ap_array);
358 static bool
snl_attr_get_uint64_array(struct snl_state * ss,struct nlattr * nla,const void * arg,void * target)359 snl_attr_get_uint64_array(struct snl_state *ss, struct nlattr *nla,
360 const void *arg, void *target)
361 {
362 struct snl_uint64_array a = {
363 .array = target,
364 .count = 0,
365 .max = (size_t)arg,
366 };
367 bool error;
368
369 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a);
370 if (! error)
371 return (error);
372
373 return (true);
374 }
375
376 #define _OUT(_field) offsetof(struct pfctl_status, _field)
377 static const struct snl_attr_parser ap_getstatus[] = {
378 { .type = PF_GS_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
379 { .type = PF_GS_RUNNING, .off = _OUT(running), .cb = snl_attr_get_bool },
380 { .type = PF_GS_SINCE, .off = _OUT(since), .cb = snl_attr_get_uint32 },
381 { .type = PF_GS_DEBUG, .off = _OUT(debug), .cb = snl_attr_get_uint32 },
382 { .type = PF_GS_HOSTID, .off = _OUT(hostid), .cb = snl_attr_get_uint32 },
383 { .type = PF_GS_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
384 { .type = PF_GS_SRC_NODES, .off = _OUT(src_nodes), .cb = snl_attr_get_uint32 },
385 { .type = PF_GS_REASSEMBLE, .off = _OUT(reass), .cb = snl_attr_get_uint32 },
386 { .type = PF_GS_SYNCOOKIES_ACTIVE, .off = _OUT(syncookies_active), .cb = snl_attr_get_uint32 },
387 { .type = PF_GS_COUNTERS, .off = _OUT(counters), .cb = snl_attr_get_counters },
388 { .type = PF_GS_LCOUNTERS, .off = _OUT(lcounters), .cb = snl_attr_get_counters },
389 { .type = PF_GS_FCOUNTERS, .off = _OUT(fcounters), .cb = snl_attr_get_counters },
390 { .type = PF_GS_SCOUNTERS, .off = _OUT(scounters), .cb = snl_attr_get_counters },
391 { .type = PF_GS_CHKSUM, .off = _OUT(pf_chksum), .arg_u32 = PF_MD5_DIGEST_LENGTH, .cb = snl_attr_get_bytes },
392 { .type = PF_GS_BCOUNTERS, .off = _OUT(bcounters), .arg_u32 = 2 * 2, .cb = snl_attr_get_uint64_array },
393 { .type = PF_GS_PCOUNTERS, .off = _OUT(pcounters), .arg_u32 = 2 * 2 * 2, .cb = snl_attr_get_uint64_array },
394 };
395 static struct snl_field_parser fp_getstatus[] = {};
396 SNL_DECLARE_PARSER(getstatus_parser, struct genlmsghdr, fp_getstatus, ap_getstatus);
397 #undef _OUT
398
399 struct pfctl_status *
pfctl_get_status_h(struct pfctl_handle * h __unused)400 pfctl_get_status_h(struct pfctl_handle *h __unused)
401 {
402 struct pfctl_status *status;
403 struct snl_errmsg_data e = {};
404 struct nlmsghdr *hdr;
405 struct snl_writer nw;
406 uint32_t seq_id;
407 int family_id;
408
409 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
410 if (family_id == 0)
411 return (NULL);
412
413 snl_init_writer(&h->ss, &nw);
414 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_STATUS);
415 hdr->nlmsg_flags |= NLM_F_DUMP;
416
417 hdr = snl_finalize_msg(&nw);
418 if (hdr == NULL) {
419 return (NULL);
420 }
421
422 seq_id = hdr->nlmsg_seq;
423 if (! snl_send_message(&h->ss, hdr))
424 return (NULL);
425
426 status = calloc(1, sizeof(*status));
427 if (status == NULL)
428 return (NULL);
429 TAILQ_INIT(&status->counters);
430 TAILQ_INIT(&status->lcounters);
431 TAILQ_INIT(&status->fcounters);
432 TAILQ_INIT(&status->scounters);
433
434 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
435 if (! snl_parse_nlmsg(&h->ss, hdr, &getstatus_parser, status))
436 continue;
437 }
438
439 return (status);
440 }
441
442 struct pfctl_status *
pfctl_get_status(int dev)443 pfctl_get_status(int dev)
444 {
445 struct pfctl_status *status;
446 nvlist_t *nvl;
447 size_t len;
448 const void *chksum;
449
450 status = calloc(1, sizeof(*status));
451 if (status == NULL)
452 return (NULL);
453
454 nvl = nvlist_create(0);
455
456 if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) {
457 nvlist_destroy(nvl);
458 free(status);
459 return (NULL);
460 }
461
462 status->running = nvlist_get_bool(nvl, "running");
463 status->since = nvlist_get_number(nvl, "since");
464 status->debug = nvlist_get_number(nvl, "debug");
465 status->hostid = ntohl(nvlist_get_number(nvl, "hostid"));
466 status->states = nvlist_get_number(nvl, "states");
467 status->src_nodes = nvlist_get_number(nvl, "src_nodes");
468 status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active");
469 status->reass = nvlist_get_number(nvl, "reass");
470
471 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"),
472 IFNAMSIZ);
473 chksum = nvlist_get_binary(nvl, "chksum", &len);
474 assert(len == PF_MD5_DIGEST_LENGTH);
475 memcpy(status->pf_chksum, chksum, len);
476
477 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"),
478 &status->counters);
479 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"),
480 &status->lcounters);
481 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"),
482 &status->fcounters);
483 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"),
484 &status->scounters);
485
486 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2,
487 (uint64_t *)status->pcounters, NULL);
488 pf_nvuint_64_array(nvl, "bcounters", 2 * 2,
489 (uint64_t *)status->bcounters, NULL);
490
491 nvlist_destroy(nvl);
492
493 return (status);
494 }
495 int
pfctl_clear_status(struct pfctl_handle * h)496 pfctl_clear_status(struct pfctl_handle *h)
497 {
498 return (pfctl_do_netlink_cmd(h, PFNL_CMD_CLEAR_STATUS));
499 }
500
501 static uint64_t
_pfctl_status_counter(struct pfctl_status_counters * counters,uint64_t id)502 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id)
503 {
504 struct pfctl_status_counter *c;
505
506 TAILQ_FOREACH(c, counters, entry) {
507 if (c->id == id)
508 return (c->counter);
509 }
510
511 return (0);
512 }
513
514 uint64_t
pfctl_status_counter(struct pfctl_status * status,int id)515 pfctl_status_counter(struct pfctl_status *status, int id)
516 {
517 return (_pfctl_status_counter(&status->counters, id));
518 }
519
520 uint64_t
pfctl_status_lcounter(struct pfctl_status * status,int id)521 pfctl_status_lcounter(struct pfctl_status *status, int id)
522 {
523 return (_pfctl_status_counter(&status->lcounters, id));
524 }
525
526 uint64_t
pfctl_status_fcounter(struct pfctl_status * status,int id)527 pfctl_status_fcounter(struct pfctl_status *status, int id)
528 {
529 return (_pfctl_status_counter(&status->fcounters, id));
530 }
531
532 uint64_t
pfctl_status_scounter(struct pfctl_status * status,int id)533 pfctl_status_scounter(struct pfctl_status *status, int id)
534 {
535 return (_pfctl_status_counter(&status->scounters, id));
536 }
537
538 void
pfctl_free_status(struct pfctl_status * status)539 pfctl_free_status(struct pfctl_status *status)
540 {
541 struct pfctl_status_counter *c, *tmp;
542
543 if (status == NULL)
544 return;
545
546 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) {
547 free(c->name);
548 free(c);
549 }
550 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) {
551 free(c->name);
552 free(c);
553 }
554 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) {
555 free(c->name);
556 free(c);
557 }
558 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) {
559 free(c->name);
560 free(c);
561 }
562
563 free(status);
564 }
565
566 static void
pfctl_nv_add_addr(nvlist_t * nvparent,const char * name,const struct pf_addr * addr)567 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name,
568 const struct pf_addr *addr)
569 {
570 nvlist_t *nvl = nvlist_create(0);
571
572 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr));
573
574 nvlist_add_nvlist(nvparent, name, nvl);
575 nvlist_destroy(nvl);
576 }
577
578 static void
pf_nvaddr_to_addr(const nvlist_t * nvl,struct pf_addr * addr)579 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr)
580 {
581 size_t len;
582 const void *data;
583
584 data = nvlist_get_binary(nvl, "addr", &len);
585 assert(len == sizeof(struct pf_addr));
586 memcpy(addr, data, len);
587 }
588
589 static void
pfctl_nv_add_addr_wrap(nvlist_t * nvparent,const char * name,const struct pf_addr_wrap * addr)590 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name,
591 const struct pf_addr_wrap *addr)
592 {
593 nvlist_t *nvl = nvlist_create(0);
594
595 nvlist_add_number(nvl, "type", addr->type);
596 nvlist_add_number(nvl, "iflags", addr->iflags);
597 if (addr->type == PF_ADDR_DYNIFTL)
598 nvlist_add_string(nvl, "ifname", addr->v.ifname);
599 if (addr->type == PF_ADDR_TABLE)
600 nvlist_add_string(nvl, "tblname", addr->v.tblname);
601 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr);
602 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask);
603
604 nvlist_add_nvlist(nvparent, name, nvl);
605 nvlist_destroy(nvl);
606 }
607
608 static void
pf_nvaddr_wrap_to_addr_wrap(const nvlist_t * nvl,struct pf_addr_wrap * addr)609 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr)
610 {
611 bzero(addr, sizeof(*addr));
612
613 addr->type = nvlist_get_number(nvl, "type");
614 addr->iflags = nvlist_get_number(nvl, "iflags");
615 if (addr->type == PF_ADDR_DYNIFTL) {
616 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"),
617 IFNAMSIZ);
618 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt");
619 }
620 if (addr->type == PF_ADDR_TABLE) {
621 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"),
622 PF_TABLE_NAME_SIZE);
623 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt");
624 }
625
626 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr);
627 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask);
628 }
629
630 static void
pfctl_nv_add_rule_addr(nvlist_t * nvparent,const char * name,const struct pf_rule_addr * addr)631 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name,
632 const struct pf_rule_addr *addr)
633 {
634 uint64_t ports[2];
635 nvlist_t *nvl = nvlist_create(0);
636
637 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr);
638 ports[0] = addr->port[0];
639 ports[1] = addr->port[1];
640 nvlist_add_number_array(nvl, "port", ports, 2);
641 nvlist_add_number(nvl, "neg", addr->neg);
642 nvlist_add_number(nvl, "port_op", addr->port_op);
643
644 nvlist_add_nvlist(nvparent, name, nvl);
645 nvlist_destroy(nvl);
646 }
647
648 static void
pf_nvrule_addr_to_rule_addr(const nvlist_t * nvl,struct pf_rule_addr * addr)649 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr)
650 {
651 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr);
652
653 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL);
654 addr->neg = nvlist_get_number(nvl, "neg");
655 addr->port_op = nvlist_get_number(nvl, "port_op");
656 }
657
658 static void
pf_nvmape_to_mape(const nvlist_t * nvl,struct pf_mape_portset * mape)659 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape)
660 {
661 mape->offset = nvlist_get_number(nvl, "offset");
662 mape->psidlen = nvlist_get_number(nvl, "psidlen");
663 mape->psid = nvlist_get_number(nvl, "psid");
664 }
665
666 static void
pf_nvpool_to_pool(const nvlist_t * nvl,struct pfctl_pool * pool)667 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool)
668 {
669 size_t len;
670 const void *data;
671
672 data = nvlist_get_binary(nvl, "key", &len);
673 assert(len == sizeof(pool->key));
674 memcpy(&pool->key, data, len);
675
676 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter);
677
678 pool->tblidx = nvlist_get_number(nvl, "tblidx");
679 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL);
680 pool->opts = nvlist_get_number(nvl, "opts");
681
682 if (nvlist_exists_nvlist(nvl, "mape"))
683 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape);
684 }
685
686 static void
pf_nvrule_uid_to_rule_uid(const nvlist_t * nvl,struct pf_rule_uid * uid)687 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid)
688 {
689 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL);
690 uid->op = nvlist_get_number(nvl, "op");
691 }
692
693 static void
pf_nvdivert_to_divert(const nvlist_t * nvl,struct pfctl_rule * rule)694 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule)
695 {
696 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr);
697 rule->divert.port = nvlist_get_number(nvl, "port");
698 }
699
700 static void
pf_nvrule_to_rule(const nvlist_t * nvl,struct pfctl_rule * rule)701 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule)
702 {
703 const uint64_t *skip;
704 const char *const *labels;
705 size_t skipcount, labelcount;
706
707 rule->nr = nvlist_get_number(nvl, "nr");
708
709 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src);
710 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst);
711
712 skip = nvlist_get_number_array(nvl, "skip", &skipcount);
713 assert(skip);
714 assert(skipcount == PF_SKIP_COUNT);
715 for (int i = 0; i < PF_SKIP_COUNT; i++)
716 rule->skip[i].nr = skip[i];
717
718 labels = nvlist_get_string_array(nvl, "labels", &labelcount);
719 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
720 for (size_t i = 0; i < labelcount; i++)
721 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
722 rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
723 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
724 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
725 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE);
726 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
727 PF_TAG_NAME_SIZE);
728 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
729 PF_TAG_NAME_SIZE);
730
731 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"),
732 PF_TABLE_NAME_SIZE);
733
734 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool);
735
736 rule->evaluations = nvlist_get_number(nvl, "evaluations");
737 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL);
738 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL);
739
740 if (nvlist_exists_number(nvl, "timestamp")) {
741 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
742 }
743
744 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint");
745
746 rule->rtableid = nvlist_get_number(nvl, "rtableid");
747 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL);
748 rule->max_states = nvlist_get_number(nvl, "max_states");
749 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes");
750 rule->max_src_states = nvlist_get_number(nvl, "max_src_states");
751 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn");
752 rule->max_src_conn_rate.limit =
753 nvlist_get_number(nvl, "max_src_conn_rate.limit");
754 rule->max_src_conn_rate.seconds =
755 nvlist_get_number(nvl, "max_src_conn_rate.seconds");
756 rule->qid = nvlist_get_number(nvl, "qid");
757 rule->pqid = nvlist_get_number(nvl, "pqid");
758 rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
759 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe");
760 rule->free_flags = nvlist_get_number(nvl, "dnflags");
761 rule->prob = nvlist_get_number(nvl, "prob");
762 rule->cuid = nvlist_get_number(nvl, "cuid");
763 rule->cpid = nvlist_get_number(nvl, "cpid");
764
765 rule->return_icmp = nvlist_get_number(nvl, "return_icmp");
766 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6");
767 rule->max_mss = nvlist_get_number(nvl, "max_mss");
768 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags");
769
770 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid);
771 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"),
772 (struct pf_rule_uid *)&rule->gid);
773
774 rule->rule_flag = nvlist_get_number(nvl, "rule_flag");
775 rule->action = nvlist_get_number(nvl, "action");
776 rule->direction = nvlist_get_number(nvl, "direction");
777 rule->log = nvlist_get_number(nvl, "log");
778 rule->logif = nvlist_get_number(nvl, "logif");
779 rule->quick = nvlist_get_number(nvl, "quick");
780 rule->ifnot = nvlist_get_number(nvl, "ifnot");
781 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not");
782 rule->natpass = nvlist_get_number(nvl, "natpass");
783
784 rule->keep_state = nvlist_get_number(nvl, "keep_state");
785 rule->af = nvlist_get_number(nvl, "af");
786 rule->proto = nvlist_get_number(nvl, "proto");
787 rule->type = nvlist_get_number(nvl, "type");
788 rule->code = nvlist_get_number(nvl, "code");
789 rule->flags = nvlist_get_number(nvl, "flags");
790 rule->flagset = nvlist_get_number(nvl, "flagset");
791 rule->min_ttl = nvlist_get_number(nvl, "min_ttl");
792 rule->allow_opts = nvlist_get_number(nvl, "allow_opts");
793 rule->rt = nvlist_get_number(nvl, "rt");
794 rule->return_ttl = nvlist_get_number(nvl, "return_ttl");
795 rule->tos = nvlist_get_number(nvl, "tos");
796 rule->set_tos = nvlist_get_number(nvl, "set_tos");
797 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
798 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
799
800 rule->flush = nvlist_get_number(nvl, "flush");
801 rule->prio = nvlist_get_number(nvl, "prio");
802 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL);
803
804 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule);
805
806 rule->states_cur = nvlist_get_number(nvl, "states_cur");
807 rule->states_tot = nvlist_get_number(nvl, "states_tot");
808 rule->src_nodes = nvlist_get_number(nvl, "src_nodes");
809 }
810
811 static void
pfctl_nveth_addr_to_eth_addr(const nvlist_t * nvl,struct pfctl_eth_addr * addr)812 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr)
813 {
814 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 };
815 size_t len;
816 const void *data;
817
818 data = nvlist_get_binary(nvl, "addr", &len);
819 assert(len == sizeof(addr->addr));
820 memcpy(addr->addr, data, sizeof(addr->addr));
821
822 data = nvlist_get_binary(nvl, "mask", &len);
823 assert(len == sizeof(addr->mask));
824 memcpy(addr->mask, data, sizeof(addr->mask));
825
826 addr->neg = nvlist_get_bool(nvl, "neg");
827
828 /* To make checks for 'is this address set?' easier. */
829 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0;
830 }
831
832 static nvlist_t *
pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr * addr)833 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr)
834 {
835 nvlist_t *nvl;
836
837 nvl = nvlist_create(0);
838 if (nvl == NULL)
839 return (NULL);
840
841 nvlist_add_bool(nvl, "neg", addr->neg);
842 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN);
843 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN);
844
845 return (nvl);
846 }
847
848 static void
pfctl_nveth_rule_to_eth_rule(const nvlist_t * nvl,struct pfctl_eth_rule * rule)849 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule)
850 {
851 const char *const *labels;
852 size_t labelcount, i;
853
854 rule->nr = nvlist_get_number(nvl, "nr");
855 rule->quick = nvlist_get_bool(nvl, "quick");
856 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
857 rule->ifnot = nvlist_get_bool(nvl, "ifnot");
858 rule->direction = nvlist_get_number(nvl, "direction");
859 rule->proto = nvlist_get_number(nvl, "proto");
860 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
861 PF_TAG_NAME_SIZE);
862 rule->match_tag = nvlist_get_number(nvl, "match_tag");
863 rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not");
864
865 labels = nvlist_get_string_array(nvl, "labels", &labelcount);
866 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
867 for (i = 0; i < labelcount; i++)
868 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
869 rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
870
871 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"),
872 &rule->src);
873 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"),
874 &rule->dst);
875
876 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"),
877 &rule->ipsrc);
878 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"),
879 &rule->ipdst);
880
881 rule->evaluations = nvlist_get_number(nvl, "evaluations");
882 rule->packets[0] = nvlist_get_number(nvl, "packets-in");
883 rule->packets[1] = nvlist_get_number(nvl, "packets-out");
884 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in");
885 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out");
886
887 if (nvlist_exists_number(nvl, "timestamp")) {
888 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
889 }
890
891 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
892 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
893 PF_TAG_NAME_SIZE);
894
895 rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
896 rule->dnflags = nvlist_get_number(nvl, "dnflags");
897
898 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
899 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
900
901 strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"),
902 IFNAMSIZ);
903
904 rule->action = nvlist_get_number(nvl, "action");
905 }
906
907 int
pfctl_get_eth_rulesets_info(int dev,struct pfctl_eth_rulesets_info * ri,const char * path)908 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri,
909 const char *path)
910 {
911 nvlist_t *nvl;
912 int ret;
913
914 bzero(ri, sizeof(*ri));
915
916 nvl = nvlist_create(0);
917 nvlist_add_string(nvl, "path", path);
918
919 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0)
920 goto out;
921
922 ri->nr = nvlist_get_number(nvl, "nr");
923
924 out:
925 nvlist_destroy(nvl);
926 return (ret);
927 }
928
929 int
pfctl_get_eth_ruleset(int dev,const char * path,int nr,struct pfctl_eth_ruleset_info * ri)930 pfctl_get_eth_ruleset(int dev, const char *path, int nr,
931 struct pfctl_eth_ruleset_info *ri)
932 {
933 nvlist_t *nvl;
934 int ret;
935
936 bzero(ri, sizeof(*ri));
937
938 nvl = nvlist_create(0);
939 nvlist_add_string(nvl, "path", path);
940 nvlist_add_number(nvl, "nr", nr);
941
942 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0)
943 goto out;
944
945 ri->nr = nvlist_get_number(nvl, "nr");
946 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN);
947 strlcpy(ri->name, nvlist_get_string(nvl, "name"),
948 PF_ANCHOR_NAME_SIZE);
949
950 out:
951 nvlist_destroy(nvl);
952 return (ret);
953 }
954
955 int
pfctl_get_eth_rules_info(int dev,struct pfctl_eth_rules_info * rules,const char * path)956 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules,
957 const char *path)
958 {
959 nvlist_t *nvl;
960 int ret;
961
962 bzero(rules, sizeof(*rules));
963
964 nvl = nvlist_create(0);
965 nvlist_add_string(nvl, "anchor", path);
966
967 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0)
968 goto out;
969
970 rules->nr = nvlist_get_number(nvl, "nr");
971 rules->ticket = nvlist_get_number(nvl, "ticket");
972
973 out:
974 nvlist_destroy(nvl);
975 return (ret);
976 }
977
978 int
pfctl_get_eth_rule(int dev,uint32_t nr,uint32_t ticket,const char * path,struct pfctl_eth_rule * rule,bool clear,char * anchor_call)979 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket,
980 const char *path, struct pfctl_eth_rule *rule, bool clear,
981 char *anchor_call)
982 {
983 nvlist_t *nvl;
984 int ret;
985
986 nvl = nvlist_create(0);
987
988 nvlist_add_string(nvl, "anchor", path);
989 nvlist_add_number(nvl, "ticket", ticket);
990 nvlist_add_number(nvl, "nr", nr);
991 nvlist_add_bool(nvl, "clear", clear);
992
993 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0)
994 goto out;
995
996 pfctl_nveth_rule_to_eth_rule(nvl, rule);
997
998 if (anchor_call)
999 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1000 MAXPATHLEN);
1001
1002 out:
1003 nvlist_destroy(nvl);
1004 return (ret);
1005 }
1006
1007 int
pfctl_add_eth_rule(int dev,const struct pfctl_eth_rule * r,const char * anchor,const char * anchor_call,uint32_t ticket)1008 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor,
1009 const char *anchor_call, uint32_t ticket)
1010 {
1011 struct pfioc_nv nv;
1012 nvlist_t *nvl, *addr;
1013 void *packed;
1014 int error = 0;
1015 size_t labelcount, size;
1016
1017 nvl = nvlist_create(0);
1018
1019 nvlist_add_number(nvl, "ticket", ticket);
1020 nvlist_add_string(nvl, "anchor", anchor);
1021 nvlist_add_string(nvl, "anchor_call", anchor_call);
1022
1023 nvlist_add_number(nvl, "nr", r->nr);
1024 nvlist_add_bool(nvl, "quick", r->quick);
1025 nvlist_add_string(nvl, "ifname", r->ifname);
1026 nvlist_add_bool(nvl, "ifnot", r->ifnot);
1027 nvlist_add_number(nvl, "direction", r->direction);
1028 nvlist_add_number(nvl, "proto", r->proto);
1029 nvlist_add_string(nvl, "match_tagname", r->match_tagname);
1030 nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not);
1031
1032 addr = pfctl_eth_addr_to_nveth_addr(&r->src);
1033 if (addr == NULL) {
1034 nvlist_destroy(nvl);
1035 return (ENOMEM);
1036 }
1037 nvlist_add_nvlist(nvl, "src", addr);
1038 nvlist_destroy(addr);
1039
1040 addr = pfctl_eth_addr_to_nveth_addr(&r->dst);
1041 if (addr == NULL) {
1042 nvlist_destroy(nvl);
1043 return (ENOMEM);
1044 }
1045 nvlist_add_nvlist(nvl, "dst", addr);
1046 nvlist_destroy(addr);
1047
1048 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc);
1049 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst);
1050
1051 labelcount = 0;
1052 while (labelcount < PF_RULE_MAX_LABEL_COUNT &&
1053 r->label[labelcount][0] != 0) {
1054 nvlist_append_string_array(nvl, "labels",
1055 r->label[labelcount]);
1056 labelcount++;
1057 }
1058 nvlist_add_number(nvl, "ridentifier", r->ridentifier);
1059
1060 nvlist_add_string(nvl, "qname", r->qname);
1061 nvlist_add_string(nvl, "tagname", r->tagname);
1062 nvlist_add_number(nvl, "dnpipe", r->dnpipe);
1063 nvlist_add_number(nvl, "dnflags", r->dnflags);
1064
1065 nvlist_add_string(nvl, "bridge_to", r->bridge_to);
1066
1067 nvlist_add_number(nvl, "action", r->action);
1068
1069 packed = nvlist_pack(nvl, &size);
1070 if (packed == NULL) {
1071 nvlist_destroy(nvl);
1072 return (ENOMEM);
1073 }
1074
1075 nv.len = size;
1076 nv.size = size;
1077 nv.data = packed;
1078
1079 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0)
1080 error = errno;
1081
1082 free(packed);
1083 nvlist_destroy(nvl);
1084
1085 return (error);
1086 }
1087
1088 static void
snl_add_msg_attr_addr_wrap(struct snl_writer * nw,uint32_t type,const struct pf_addr_wrap * addr)1089 snl_add_msg_attr_addr_wrap(struct snl_writer *nw, uint32_t type, const struct pf_addr_wrap *addr)
1090 {
1091 int off;
1092
1093 off = snl_add_msg_attr_nested(nw, type);
1094
1095 snl_add_msg_attr_ip6(nw, PF_AT_ADDR, &addr->v.a.addr.v6);
1096 snl_add_msg_attr_ip6(nw, PF_AT_MASK, &addr->v.a.mask.v6);
1097
1098 if (addr->type == PF_ADDR_DYNIFTL)
1099 snl_add_msg_attr_string(nw, PF_AT_IFNAME, addr->v.ifname);
1100 if (addr->type == PF_ADDR_TABLE)
1101 snl_add_msg_attr_string(nw, PF_AT_TABLENAME, addr->v.tblname);
1102 snl_add_msg_attr_u8(nw, PF_AT_TYPE, addr->type);
1103 snl_add_msg_attr_u8(nw, PF_AT_IFLAGS, addr->iflags);
1104
1105 snl_end_attr_nested(nw, off);
1106 }
1107
1108 static void
snl_add_msg_attr_pool_addr(struct snl_writer * nw,uint32_t type,const struct pf_pooladdr * pa)1109 snl_add_msg_attr_pool_addr(struct snl_writer *nw, uint32_t type, const struct pf_pooladdr *pa)
1110 {
1111 int off;
1112
1113 off = snl_add_msg_attr_nested(nw, type);
1114
1115 snl_add_msg_attr_string(nw, PF_PA_IFNAME, pa->ifname);
1116 snl_add_msg_attr_addr_wrap(nw, PF_PA_ADDR, &pa->addr);
1117
1118 snl_end_attr_nested(nw, off);
1119 }
1120
1121 static void
snl_add_msg_attr_rule_addr(struct snl_writer * nw,uint32_t type,const struct pf_rule_addr * addr)1122 snl_add_msg_attr_rule_addr(struct snl_writer *nw, uint32_t type, const struct pf_rule_addr *addr)
1123 {
1124 int off;
1125
1126 off = snl_add_msg_attr_nested(nw, type);
1127
1128 snl_add_msg_attr_addr_wrap(nw, PF_RAT_ADDR, &addr->addr);
1129 snl_add_msg_attr_u16(nw, PF_RAT_SRC_PORT, addr->port[0]);
1130 snl_add_msg_attr_u16(nw, PF_RAT_DST_PORT, addr->port[1]);
1131 snl_add_msg_attr_u8(nw, PF_RAT_NEG, addr->neg);
1132 snl_add_msg_attr_u8(nw, PF_RAT_OP, addr->port_op);
1133
1134 snl_end_attr_nested(nw, off);
1135 }
1136
1137 static void
snl_add_msg_attr_rule_labels(struct snl_writer * nw,uint32_t type,const char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE])1138 snl_add_msg_attr_rule_labels(struct snl_writer *nw, uint32_t type, const char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE])
1139 {
1140 int off, i = 0;
1141
1142 off = snl_add_msg_attr_nested(nw, type);
1143
1144 while (i < PF_RULE_MAX_LABEL_COUNT &&
1145 labels[i][0] != 0) {
1146 snl_add_msg_attr_string(nw, PF_LT_LABEL, labels[i]);
1147 i++;
1148 }
1149
1150 snl_end_attr_nested(nw, off);
1151 }
1152
1153 static void
snl_add_msg_attr_mape(struct snl_writer * nw,uint32_t type,const struct pf_mape_portset * me)1154 snl_add_msg_attr_mape(struct snl_writer *nw, uint32_t type, const struct pf_mape_portset *me)
1155 {
1156 int off;
1157
1158 off = snl_add_msg_attr_nested(nw, type);
1159
1160 snl_add_msg_attr_u8(nw, PF_MET_OFFSET, me->offset);
1161 snl_add_msg_attr_u8(nw, PF_MET_PSID_LEN, me->psidlen);
1162 snl_add_msg_attr_u16(nw, PF_MET_PSID, me->psid);
1163
1164 snl_end_attr_nested(nw, off);
1165 }
1166
1167 static void
snl_add_msg_attr_rpool(struct snl_writer * nw,uint32_t type,const struct pfctl_pool * pool)1168 snl_add_msg_attr_rpool(struct snl_writer *nw, uint32_t type, const struct pfctl_pool *pool)
1169 {
1170 int off;
1171
1172 off = snl_add_msg_attr_nested(nw, type);
1173
1174 snl_add_msg_attr(nw, PF_PT_KEY, sizeof(pool->key), &pool->key);
1175 snl_add_msg_attr_ip6(nw, PF_PT_COUNTER, &pool->counter.v6);
1176 snl_add_msg_attr_u32(nw, PF_PT_TBLIDX, pool->tblidx);
1177 snl_add_msg_attr_u16(nw, PF_PT_PROXY_SRC_PORT, pool->proxy_port[0]);
1178 snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]);
1179 snl_add_msg_attr_u8(nw, PF_PT_OPTS, pool->opts);
1180 snl_add_msg_attr_mape(nw, PF_PT_MAPE, &pool->mape);
1181
1182 snl_end_attr_nested(nw, off);
1183 }
1184
1185 static void
snl_add_msg_attr_timeouts(struct snl_writer * nw,uint32_t type,const uint32_t * timeouts)1186 snl_add_msg_attr_timeouts(struct snl_writer *nw, uint32_t type, const uint32_t *timeouts)
1187 {
1188 int off;
1189
1190 off = snl_add_msg_attr_nested(nw, type);
1191
1192 for (int i = 0; i < PFTM_MAX; i++)
1193 snl_add_msg_attr_u32(nw, PF_TT_TIMEOUT, timeouts[i]);
1194
1195 snl_end_attr_nested(nw, off);
1196 }
1197
1198 static void
snl_add_msg_attr_uid(struct snl_writer * nw,uint32_t type,const struct pf_rule_uid * uid)1199 snl_add_msg_attr_uid(struct snl_writer *nw, uint32_t type, const struct pf_rule_uid *uid)
1200 {
1201 int off;
1202
1203 off = snl_add_msg_attr_nested(nw, type);
1204
1205 snl_add_msg_attr_u32(nw, PF_RUT_UID_LOW, uid->uid[0]);
1206 snl_add_msg_attr_u32(nw, PF_RUT_UID_HIGH, uid->uid[1]);
1207 snl_add_msg_attr_u8(nw, PF_RUT_OP, uid->op);
1208
1209 snl_end_attr_nested(nw, off);
1210 }
1211
1212 static void
snl_add_msg_attr_pf_rule(struct snl_writer * nw,uint32_t type,const struct pfctl_rule * r)1213 snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r)
1214 {
1215 int off;
1216
1217 off = snl_add_msg_attr_nested(nw, type);
1218
1219 snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src);
1220 snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst);
1221 snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label);
1222 snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier);
1223 snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname);
1224 snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname);
1225 snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname);
1226 snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname);
1227 snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname);
1228 snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname);
1229 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL, &r->rpool);
1230 snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint);
1231 snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid);
1232 snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout);
1233 snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states);
1234 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes);
1235 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states);
1236 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN, r->max_src_conn);
1237 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit);
1238 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds);
1239
1240 snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe);
1241 snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe);
1242 snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags);
1243
1244 snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr);
1245 snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob);
1246 snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid);
1247 snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid);
1248
1249 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp);
1250 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6);
1251 snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss);
1252 snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags);
1253
1254 snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid);
1255 snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid);
1256 snl_add_msg_attr_string(nw, PF_RT_RCV_IFNAME, r->rcv_ifname);
1257
1258 snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag);
1259 snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action);
1260 snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction);
1261 snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log);
1262 snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif);
1263 snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick);
1264 snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot);
1265 snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not);
1266 snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass);
1267 snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state);
1268 snl_add_msg_attr_u8(nw, PF_RT_AF, r->af);
1269 snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto);
1270 snl_add_msg_attr_u8(nw, PF_RT_TYPE, r->type);
1271 snl_add_msg_attr_u8(nw, PF_RT_CODE, r->code);
1272 snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags);
1273 snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset);
1274 snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl);
1275 snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts);
1276 snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt);
1277 snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl);
1278 snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos);
1279 snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos);
1280
1281 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative);
1282 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard);
1283 snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush);
1284 snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio);
1285 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]);
1286 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]);
1287
1288 snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6);
1289 snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port);
1290
1291 snl_end_attr_nested(nw, off);
1292 }
1293
1294 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)1295 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor,
1296 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket)
1297 {
1298 struct pfctl_handle *h;
1299 int ret;
1300
1301 h = pfctl_open(PF_DEVICE);
1302 if (h == NULL)
1303 return (ENODEV);
1304
1305 ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket);
1306
1307 pfctl_close(h);
1308
1309 return (ret);
1310 }
1311
1312 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)1313 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r,
1314 const char *anchor, const char *anchor_call, uint32_t ticket,
1315 uint32_t pool_ticket)
1316 {
1317 struct snl_writer nw;
1318 struct snl_errmsg_data e = {};
1319 struct nlmsghdr *hdr;
1320 uint32_t seq_id;
1321 int family_id;
1322
1323 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1324 if (family_id == 0)
1325 return (ENOTSUP);
1326
1327 snl_init_writer(&h->ss, &nw);
1328 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE);
1329 hdr->nlmsg_flags |= NLM_F_DUMP;
1330 snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket);
1331 snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket);
1332 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor);
1333 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call);
1334
1335 snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r);
1336
1337 if ((hdr = snl_finalize_msg(&nw)) == NULL)
1338 return (ENXIO);
1339
1340 seq_id = hdr->nlmsg_seq;
1341
1342 if (! snl_send_message(&h->ss, hdr))
1343 return (ENXIO);
1344
1345 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1346 }
1347
1348 return (e.error);
1349 }
1350
1351 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1352 #define _OUT(_field) offsetof(struct pfctl_rules_info, _field)
1353 static struct snl_attr_parser ap_getrules[] = {
1354 { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
1355 { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
1356 };
1357 static struct snl_field_parser fp_getrules[] = {
1358 };
1359 #undef _IN
1360 #undef _OUT
1361 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, fp_getrules, ap_getrules);
1362
1363 int
pfctl_get_rules_info_h(struct pfctl_handle * h,struct pfctl_rules_info * rules,uint32_t ruleset,const char * path)1364 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset,
1365 const char *path)
1366 {
1367 struct snl_errmsg_data e = {};
1368 struct nlmsghdr *hdr;
1369 struct snl_writer nw;
1370 uint32_t seq_id;
1371 int family_id;
1372
1373 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1374 if (family_id == 0)
1375 return (ENOTSUP);
1376
1377 snl_init_writer(&h->ss, &nw);
1378 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES);
1379 hdr->nlmsg_flags |= NLM_F_DUMP;
1380
1381 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path);
1382 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1383
1384 hdr = snl_finalize_msg(&nw);
1385 if (hdr == NULL)
1386 return (ENOMEM);
1387
1388 seq_id = hdr->nlmsg_seq;
1389 if (! snl_send_message(&h->ss, hdr))
1390 return (ENXIO);
1391
1392 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1393 if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules))
1394 continue;
1395 }
1396
1397 return (e.error);
1398 }
1399
1400 int
pfctl_get_rules_info(int dev __unused,struct pfctl_rules_info * rules,uint32_t ruleset,const char * path)1401 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset,
1402 const char *path)
1403 {
1404 struct pfctl_handle *h;
1405 int error;
1406
1407 h = pfctl_open(PF_DEVICE);
1408 if (h == NULL)
1409 return (ENOTSUP);
1410 error = pfctl_get_rules_info_h(h, rules, ruleset, path);
1411 pfctl_close(h);
1412
1413 return (error);
1414 }
1415
1416 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)1417 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor,
1418 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1419 {
1420 return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule,
1421 anchor_call, false));
1422 }
1423
1424 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)1425 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor,
1426 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1427 {
1428 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule,
1429 anchor_call, false));
1430 }
1431
1432 #define _OUT(_field) offsetof(struct pf_addr_wrap, _field)
1433 static const struct snl_attr_parser ap_addr_wrap[] = {
1434 { .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr },
1435 { .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr },
1436 { .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string },
1437 { .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1438 { .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 },
1439 { .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 },
1440 { .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 },
1441 { .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 },
1442 };
1443 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap);
1444 #undef _OUT
1445
1446 #define _OUT(_field) offsetof(struct pf_rule_addr, _field)
1447 static struct snl_attr_parser ap_rule_addr[] = {
1448 { .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
1449 { .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1450 { .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1451 { .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 },
1452 { .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 },
1453 };
1454 #undef _OUT
1455 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr);
1456
1457 struct snl_parsed_labels
1458 {
1459 char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
1460 uint32_t i;
1461 };
1462
1463 static bool
snl_attr_get_pf_rule_labels(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1464 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1465 const void *arg __unused, void *target)
1466 {
1467 struct snl_parsed_labels *l = (struct snl_parsed_labels *)target;
1468 bool ret;
1469
1470 if (l->i >= PF_RULE_MAX_LABEL_COUNT)
1471 return (E2BIG);
1472
1473 ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE,
1474 l->labels[l->i]);
1475 if (ret)
1476 l->i++;
1477
1478 return (ret);
1479 }
1480
1481 #define _OUT(_field) offsetof(struct nl_parsed_labels, _field)
1482 static const struct snl_attr_parser ap_labels[] = {
1483 { .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels },
1484 };
1485 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels);
1486 #undef _OUT
1487
1488 static bool
snl_attr_get_nested_pf_rule_labels(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1489 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1490 const void *arg __unused, void *target)
1491 {
1492 struct snl_parsed_labels parsed_labels = { };
1493 bool error;
1494
1495 /* Assumes target points to the beginning of the structure */
1496 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels);
1497 if (! error)
1498 return (error);
1499
1500 memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels));
1501
1502 return (true);
1503 }
1504
1505 #define _OUT(_field) offsetof(struct pf_mape_portset, _field)
1506 static const struct snl_attr_parser ap_mape_portset[] = {
1507 { .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 },
1508 { .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 },
1509 {. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 },
1510 };
1511 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset);
1512 #undef _OUT
1513
1514 #define _OUT(_field) offsetof(struct pfctl_pool, _field)
1515 static const struct snl_attr_parser ap_pool[] = {
1516 { .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes },
1517 { .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr },
1518 { .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 },
1519 { .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 },
1520 { .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 },
1521 { .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 },
1522 { .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested },
1523 };
1524 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool);
1525 #undef _OUT
1526
1527 struct nl_parsed_timeouts
1528 {
1529 uint32_t timeouts[PFTM_MAX];
1530 uint32_t i;
1531 };
1532
1533 static bool
snl_attr_get_pf_timeout(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1534 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla,
1535 const void *arg __unused, void *target)
1536 {
1537 struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target;
1538 bool ret;
1539
1540 if (t->i >= PFTM_MAX)
1541 return (E2BIG);
1542
1543 ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]);
1544 if (ret)
1545 t->i++;
1546
1547 return (ret);
1548 }
1549
1550 #define _OUT(_field) offsetof(struct nl_parsed_timeout, _field)
1551 static const struct snl_attr_parser ap_timeouts[] = {
1552 { .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout },
1553 };
1554 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts);
1555 #undef _OUT
1556
1557 static bool
snl_attr_get_nested_timeouts(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1558 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla,
1559 const void *arg __unused, void *target)
1560 {
1561 struct nl_parsed_timeouts parsed_timeouts = { };
1562 bool error;
1563
1564 /* Assumes target points to the beginning of the structure */
1565 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts);
1566 if (! error)
1567 return (error);
1568
1569 memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts));
1570
1571 return (true);
1572 }
1573
1574 #define _OUT(_field) offsetof(struct pf_rule_uid, _field)
1575 static const struct snl_attr_parser ap_rule_uid[] = {
1576 { .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 },
1577 { .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 },
1578 { .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 },
1579 };
1580 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid);
1581 #undef _OUT
1582
1583 struct pfctl_nl_get_rule {
1584 struct pfctl_rule r;
1585 char anchor_call[MAXPATHLEN];
1586 };
1587 #define _OUT(_field) offsetof(struct pfctl_nl_get_rule, _field)
1588 static struct snl_attr_parser ap_getrule[] = {
1589 { .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1590 { .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1591 { .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 },
1592 { .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels },
1593 { .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string },
1594 { .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1595 { .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1596 { .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1597 { .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1598 { .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1599 { .type = PF_RT_RPOOL, .off = _OUT(r.rpool), .arg = &pool_parser, .cb = snl_attr_get_nested },
1600 { .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 },
1601 { .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 },
1602 { .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts },
1603 { .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 },
1604 { .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 },
1605 { .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 },
1606 { .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 },
1607 { .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 },
1608 { .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 },
1609 { .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 },
1610 { .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 },
1611 { .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 },
1612 { .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 },
1613 { .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 },
1614 {. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 },
1615 { .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 },
1616 { .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 },
1617 { .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 },
1618 { .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 },
1619 { .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1620 { .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1621 { .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 },
1622 { .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 },
1623 { .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 },
1624 { .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 },
1625 { .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 },
1626 { .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 },
1627 { .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 },
1628 { .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 },
1629 { .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 },
1630 { .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 },
1631 { .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 },
1632 { .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 },
1633 { .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 },
1634 { .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 },
1635 { .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 },
1636 { .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 },
1637 { .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 },
1638 { .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 },
1639 { .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 },
1640 { .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 },
1641 { .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 },
1642 { .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 },
1643 { .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 },
1644 { .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 },
1645 { .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 },
1646 { .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 },
1647 { .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 },
1648 { .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 },
1649 { .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr },
1650 { .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 },
1651 { .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 },
1652 { .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 },
1653 { .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 },
1654 { .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 },
1655 { .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 },
1656 { .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 },
1657 { .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 },
1658 { .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 },
1659 { .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 },
1660 { .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string },
1661 { .type = PF_RT_RCV_IFNAME, .off = _OUT(r.rcv_ifname), .arg = (void*)IFNAMSIZ, .cb = snl_attr_copy_string },
1662 { .type = PF_RT_MAX_SRC_CONN, .off = _OUT(r.max_src_conn), .cb = snl_attr_get_uint32 },
1663 };
1664 static struct snl_field_parser fp_getrule[] = {};
1665 #undef _OUT
1666 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, fp_getrule, ap_getrule);
1667
1668 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)1669 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket,
1670 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1671 char *anchor_call, bool clear)
1672 {
1673 struct pfctl_nl_get_rule attrs = {};
1674 struct snl_errmsg_data e = {};
1675 struct nlmsghdr *hdr;
1676 struct snl_writer nw;
1677 uint32_t seq_id;
1678 int family_id;
1679
1680 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1681 if (family_id == 0)
1682 return (ENOTSUP);
1683
1684 snl_init_writer(&h->ss, &nw);
1685 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE);
1686 hdr->nlmsg_flags |= NLM_F_DUMP;
1687
1688 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor);
1689 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1690 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr);
1691 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket);
1692 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear);
1693
1694 hdr = snl_finalize_msg(&nw);
1695 if (hdr == NULL)
1696 return (ENOMEM);
1697
1698 seq_id = hdr->nlmsg_seq;
1699 if (! snl_send_message(&h->ss, hdr))
1700 return (ENXIO);
1701
1702 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1703 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs))
1704 continue;
1705 }
1706
1707 memcpy(rule, &attrs.r, sizeof(attrs.r));
1708 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN);
1709
1710 return (e.error);
1711 }
1712
1713 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)1714 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket,
1715 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1716 char *anchor_call, bool clear)
1717 {
1718 nvlist_t *nvl;
1719 int ret;
1720
1721 nvl = nvlist_create(0);
1722 if (nvl == 0)
1723 return (ENOMEM);
1724
1725 nvlist_add_number(nvl, "nr", nr);
1726 nvlist_add_number(nvl, "ticket", ticket);
1727 nvlist_add_string(nvl, "anchor", anchor);
1728 nvlist_add_number(nvl, "ruleset", ruleset);
1729
1730 if (clear)
1731 nvlist_add_bool(nvl, "clear_counter", true);
1732
1733 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0)
1734 goto out;
1735
1736 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule);
1737
1738 if (anchor_call)
1739 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1740 MAXPATHLEN);
1741
1742 out:
1743 nvlist_destroy(nvl);
1744 return (ret);
1745 }
1746
1747 int
pfctl_set_keepcounters(int dev,bool keep)1748 pfctl_set_keepcounters(int dev, bool keep)
1749 {
1750 struct pfioc_nv nv;
1751 nvlist_t *nvl;
1752 int ret;
1753
1754 nvl = nvlist_create(0);
1755
1756 nvlist_add_bool(nvl, "keep_counters", keep);
1757
1758 nv.data = nvlist_pack(nvl, &nv.len);
1759 nv.size = nv.len;
1760
1761 nvlist_destroy(nvl);
1762
1763 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv);
1764
1765 free(nv.data);
1766 return (ret);
1767 }
1768
1769 struct pfctl_creator {
1770 uint32_t id;
1771 };
1772 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1773 #define _OUT(_field) offsetof(struct pfctl_creator, _field)
1774 static struct snl_attr_parser ap_creators[] = {
1775 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
1776 };
1777 static struct snl_field_parser fp_creators[] = {
1778 };
1779 #undef _IN
1780 #undef _OUT
1781 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, fp_creators, ap_creators);
1782
1783 static int
pfctl_get_creators_nl(struct snl_state * ss,uint32_t * creators,size_t * len)1784 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len)
1785 {
1786
1787 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1788 size_t i = 0;
1789
1790 struct nlmsghdr *hdr;
1791 struct snl_writer nw;
1792
1793 if (family_id == 0)
1794 return (ENOTSUP);
1795
1796 snl_init_writer(ss, &nw);
1797 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS);
1798 hdr->nlmsg_flags |= NLM_F_DUMP;
1799 hdr = snl_finalize_msg(&nw);
1800 if (hdr == NULL)
1801 return (ENOMEM);
1802 uint32_t seq_id = hdr->nlmsg_seq;
1803
1804 snl_send_message(ss, hdr);
1805
1806 struct snl_errmsg_data e = {};
1807 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1808 struct pfctl_creator c;
1809 bzero(&c, sizeof(c));
1810
1811 if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c))
1812 continue;
1813
1814 creators[i] = c.id;
1815 i++;
1816 if (i > *len)
1817 return (E2BIG);
1818 }
1819
1820 *len = i;
1821
1822 return (0);
1823 }
1824
1825 int
pfctl_get_creatorids(struct pfctl_handle * h,uint32_t * creators,size_t * len)1826 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len)
1827 {
1828 int error;
1829
1830 error = pfctl_get_creators_nl(&h->ss, creators, len);
1831
1832 return (error);
1833 }
1834
1835 static inline bool
snl_attr_get_pfaddr(struct snl_state * ss __unused,struct nlattr * nla,const void * arg __unused,void * target)1836 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla,
1837 const void *arg __unused, void *target)
1838 {
1839 memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla));
1840 return (true);
1841 }
1842
1843 static inline bool
snl_attr_store_ifname(struct snl_state * ss __unused,struct nlattr * nla,const void * arg __unused,void * target)1844 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla,
1845 const void *arg __unused, void *target)
1846 {
1847 size_t maxlen = NLA_DATA_LEN(nla);
1848
1849 if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) {
1850 strlcpy(target, (char *)NLA_DATA(nla), maxlen);
1851 return (true);
1852 }
1853 return (false);
1854 }
1855
1856 #define _OUT(_field) offsetof(struct pfctl_state_peer, _field)
1857 static const struct snl_attr_parser nla_p_speer[] = {
1858 { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 },
1859 { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 },
1860 { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 },
1861 { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 },
1862 { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 },
1863 };
1864 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer);
1865 #undef _OUT
1866
1867 #define _OUT(_field) offsetof(struct pf_state_key_export, _field)
1868 static const struct snl_attr_parser nla_p_skey[] = {
1869 { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr },
1870 { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr },
1871 { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1872 { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1873 };
1874 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey);
1875 #undef _OUT
1876
1877 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1878 #define _OUT(_field) offsetof(struct pfctl_state, _field)
1879 static struct snl_attr_parser ap_state[] = {
1880 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 },
1881 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 },
1882 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname },
1883 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname },
1884 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1885 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1886 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested },
1887 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested },
1888 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr },
1889 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
1890 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 },
1891 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 },
1892 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 },
1893 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 },
1894 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
1895 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
1896 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
1897 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
1898 { .type = PF_ST_AF, .off = _OUT(key[0].af), .cb = snl_attr_get_uint8 },
1899 { .type = PF_ST_PROTO, .off = _OUT(key[0].proto), .cb = snl_attr_get_uint8 },
1900 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 },
1901 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 },
1902 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 },
1903 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 },
1904 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 },
1905 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 },
1906 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 },
1907 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 },
1908 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 },
1909 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 },
1910 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname },
1911 };
1912 static struct snl_field_parser fp_state[] = {
1913 };
1914 #undef _IN
1915 #undef _OUT
1916 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, fp_state, ap_state);
1917
1918 static const struct snl_hdr_parser *all_parsers[] = {
1919 &state_parser, &skey_parser, &speer_parser,
1920 &creator_parser, &getrules_parser
1921 };
1922
1923 static int
pfctl_get_states_nl(struct pfctl_state_filter * filter,struct snl_state * ss,pfctl_get_state_fn f,void * arg)1924 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg)
1925 {
1926 SNL_VERIFY_PARSERS(all_parsers);
1927 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1928 int ret;
1929
1930 struct nlmsghdr *hdr;
1931 struct snl_writer nw;
1932
1933 if (family_id == 0)
1934 return (ENOTSUP);
1935
1936 snl_init_writer(ss, &nw);
1937 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES);
1938 hdr->nlmsg_flags |= NLM_F_DUMP;
1939 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname);
1940 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto);
1941 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af);
1942 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6);
1943 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6);
1944
1945 hdr = snl_finalize_msg(&nw);
1946 if (hdr == NULL)
1947 return (ENOMEM);
1948
1949 uint32_t seq_id = hdr->nlmsg_seq;
1950
1951 snl_send_message(ss, hdr);
1952
1953 struct snl_errmsg_data e = {};
1954 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1955 struct pfctl_state s;
1956 bzero(&s, sizeof(s));
1957 if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s))
1958 continue;
1959
1960 s.key[1].af = s.key[0].af;
1961 s.key[1].proto = s.key[0].proto;
1962
1963 ret = f(&s, arg);
1964 if (ret != 0)
1965 return (ret);
1966 }
1967
1968 return (0);
1969 }
1970
1971 int
pfctl_get_states_iter(pfctl_get_state_fn f,void * arg)1972 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg)
1973 {
1974 struct pfctl_state_filter filter = {};
1975 return (pfctl_get_filtered_states_iter(&filter, f, arg));
1976 }
1977
1978 int
pfctl_get_filtered_states_iter(struct pfctl_state_filter * filter,pfctl_get_state_fn f,void * arg)1979 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
1980 {
1981 struct snl_state ss = {};
1982 int error;
1983
1984 snl_init(&ss, NETLINK_GENERIC);
1985 error = pfctl_get_states_nl(filter, &ss, f, arg);
1986 snl_free(&ss);
1987
1988 return (error);
1989 }
1990
1991 static int
pfctl_append_states(struct pfctl_state * s,void * arg)1992 pfctl_append_states(struct pfctl_state *s, void *arg)
1993 {
1994 struct pfctl_state *new;
1995 struct pfctl_states *states = (struct pfctl_states *)arg;
1996
1997 new = malloc(sizeof(*s));
1998 if (new == NULL)
1999 return (ENOMEM);
2000
2001 memcpy(new, s, sizeof(*s));
2002
2003 TAILQ_INSERT_TAIL(&states->states, new, entry);
2004
2005 return (0);
2006 }
2007
2008 int
pfctl_get_states(int dev __unused,struct pfctl_states * states)2009 pfctl_get_states(int dev __unused, struct pfctl_states *states)
2010 {
2011 int ret;
2012
2013 bzero(states, sizeof(*states));
2014 TAILQ_INIT(&states->states);
2015
2016 ret = pfctl_get_states_iter(pfctl_append_states, states);
2017 if (ret != 0) {
2018 pfctl_free_states(states);
2019 return (ret);
2020 }
2021
2022 return (0);
2023 }
2024
2025 void
pfctl_free_states(struct pfctl_states * states)2026 pfctl_free_states(struct pfctl_states *states)
2027 {
2028 struct pfctl_state *s, *tmp;
2029
2030 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) {
2031 free(s);
2032 }
2033
2034 bzero(states, sizeof(*states));
2035 }
2036
2037 struct pfctl_nl_clear_states {
2038 uint32_t killed;
2039 };
2040 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field)
2041 static struct snl_attr_parser ap_clear_states[] = {
2042 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 },
2043 };
2044 static struct snl_field_parser fp_clear_states[] = {};
2045 #undef _OUT
2046 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, fp_clear_states, ap_clear_states);
2047
2048 static int
_pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed,int cmd)2049 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2050 unsigned int *killed, int cmd)
2051 {
2052 struct snl_writer nw;
2053 struct snl_errmsg_data e = {};
2054 struct pfctl_nl_clear_states attrs = {};
2055 struct nlmsghdr *hdr;
2056 uint32_t seq_id;
2057 int family_id;
2058
2059 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2060 if (family_id == 0)
2061 return (ENOTSUP);
2062
2063 snl_init_writer(&h->ss, &nw);
2064 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
2065 hdr->nlmsg_flags |= NLM_F_DUMP;
2066
2067 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id);
2068 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid));
2069 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction);
2070 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af);
2071 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto);
2072 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src);
2073 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst);
2074 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr);
2075 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname);
2076 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label);
2077 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match);
2078 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat);
2079
2080 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2081 return (ENXIO);
2082
2083 seq_id = hdr->nlmsg_seq;
2084
2085 if (! snl_send_message(&h->ss, hdr))
2086 return (ENXIO);
2087
2088 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2089 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs))
2090 continue;
2091 }
2092
2093 if (killed)
2094 *killed = attrs.killed;
2095
2096 return (e.error);
2097 }
2098
2099 int
pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2100 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2101 unsigned int *killed)
2102 {
2103 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES));
2104 }
2105
2106 int
pfctl_kill_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2107 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2108 unsigned int *killed)
2109 {
2110 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES));
2111 }
2112
2113 static int
_pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed,uint64_t cmd)2114 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2115 unsigned int *killed, uint64_t cmd)
2116 {
2117 struct pfctl_handle *h;
2118 int ret;
2119
2120 h = pfctl_open(PF_DEVICE);
2121 if (h == NULL)
2122 return (ENODEV);
2123
2124 ret = _pfctl_clear_states_h(h, kill, killed, cmd);
2125 pfctl_close(h);
2126
2127 return (ret);
2128 }
2129
2130 int
pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2131 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2132 unsigned int *killed)
2133 {
2134 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES));
2135 }
2136
2137 int
pfctl_kill_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2138 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed)
2139 {
2140 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES));
2141 }
2142
2143 int
pfctl_clear_rules(int dev,const char * anchorname)2144 pfctl_clear_rules(int dev, const char *anchorname)
2145 {
2146 struct pfioc_trans trans;
2147 struct pfioc_trans_e transe[2];
2148 int ret;
2149
2150 bzero(&trans, sizeof(trans));
2151 bzero(&transe, sizeof(transe));
2152
2153 transe[0].rs_num = PF_RULESET_SCRUB;
2154 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2155 >= sizeof(transe[0].anchor))
2156 return (E2BIG);
2157
2158 transe[1].rs_num = PF_RULESET_FILTER;
2159 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2160 >= sizeof(transe[1].anchor))
2161 return (E2BIG);
2162
2163 trans.size = 2;
2164 trans.esize = sizeof(transe[0]);
2165 trans.array = transe;
2166
2167 ret = ioctl(dev, DIOCXBEGIN, &trans);
2168 if (ret != 0)
2169 return (errno);
2170 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2171 if (ret != 0)
2172 return (errno);
2173
2174 return (0);
2175 }
2176
2177 int
pfctl_clear_nat(int dev,const char * anchorname)2178 pfctl_clear_nat(int dev, const char *anchorname)
2179 {
2180 struct pfioc_trans trans;
2181 struct pfioc_trans_e transe[3];
2182 int ret;
2183
2184 bzero(&trans, sizeof(trans));
2185 bzero(&transe, sizeof(transe));
2186
2187 transe[0].rs_num = PF_RULESET_NAT;
2188 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2189 >= sizeof(transe[0].anchor))
2190 return (E2BIG);
2191
2192 transe[1].rs_num = PF_RULESET_BINAT;
2193 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2194 >= sizeof(transe[0].anchor))
2195 return (E2BIG);
2196
2197 transe[2].rs_num = PF_RULESET_RDR;
2198 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor))
2199 >= sizeof(transe[2].anchor))
2200 return (E2BIG);
2201
2202 trans.size = 3;
2203 trans.esize = sizeof(transe[0]);
2204 trans.array = transe;
2205
2206 ret = ioctl(dev, DIOCXBEGIN, &trans);
2207 if (ret != 0)
2208 return (errno);
2209 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2210 if (ret != 0)
2211 return (errno);
2212
2213 return (0);
2214 }
2215
2216 int
pfctl_clear_eth_rules(int dev,const char * anchorname)2217 pfctl_clear_eth_rules(int dev, const char *anchorname)
2218 {
2219 struct pfioc_trans trans;
2220 struct pfioc_trans_e transe;
2221 int ret;
2222
2223 bzero(&trans, sizeof(trans));
2224 bzero(&transe, sizeof(transe));
2225
2226 transe.rs_num = PF_RULESET_ETH;
2227 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor))
2228 >= sizeof(transe.anchor))
2229 return (E2BIG);
2230
2231 trans.size = 1;
2232 trans.esize = sizeof(transe);
2233 trans.array = &transe;
2234
2235 ret = ioctl(dev, DIOCXBEGIN, &trans);
2236 if (ret != 0)
2237 return (errno);
2238 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2239 if (ret != 0)
2240 return (errno);
2241
2242 return (0);
2243 }
2244
2245 static int
_pfctl_get_limit(int dev,const int index,uint * limit)2246 _pfctl_get_limit(int dev, const int index, uint *limit)
2247 {
2248 struct pfioc_limit pl;
2249
2250 bzero(&pl, sizeof(pl));
2251 pl.index = index;
2252
2253 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1)
2254 return (errno);
2255
2256 *limit = pl.limit;
2257
2258 return (0);
2259 }
2260
2261 int
pfctl_set_syncookies(int dev,const struct pfctl_syncookies * s)2262 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s)
2263 {
2264 struct pfioc_nv nv;
2265 nvlist_t *nvl;
2266 int ret;
2267 uint state_limit;
2268 uint64_t lim, hi, lo;
2269
2270 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2271 if (ret != 0)
2272 return (ret);
2273
2274 lim = state_limit;
2275 hi = lim * s->highwater / 100;
2276 lo = lim * s->lowwater / 100;
2277
2278 if (lo == hi)
2279 hi++;
2280
2281 nvl = nvlist_create(0);
2282
2283 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER);
2284 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE);
2285 nvlist_add_number(nvl, "highwater", hi);
2286 nvlist_add_number(nvl, "lowwater", lo);
2287
2288 nv.data = nvlist_pack(nvl, &nv.len);
2289 nv.size = nv.len;
2290 nvlist_destroy(nvl);
2291 nvl = NULL;
2292
2293 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv);
2294
2295 free(nv.data);
2296 if (ret != 0)
2297 return (errno);
2298
2299 return (0);
2300 }
2301
2302 int
pfctl_get_syncookies(int dev,struct pfctl_syncookies * s)2303 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s)
2304 {
2305 nvlist_t *nvl;
2306 int ret;
2307 uint state_limit;
2308 bool enabled, adaptive;
2309
2310 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2311 if (ret != 0)
2312 return (ret);
2313
2314 bzero(s, sizeof(*s));
2315
2316 nvl = nvlist_create(0);
2317
2318 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) {
2319 ret = errno;
2320 goto out;
2321 }
2322
2323 enabled = nvlist_get_bool(nvl, "enabled");
2324 adaptive = nvlist_get_bool(nvl, "adaptive");
2325
2326 if (enabled) {
2327 if (adaptive)
2328 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE;
2329 else
2330 s->mode = PFCTL_SYNCOOKIES_ALWAYS;
2331 } else {
2332 s->mode = PFCTL_SYNCOOKIES_NEVER;
2333 }
2334
2335 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit;
2336 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit;
2337 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states");
2338
2339 out:
2340 nvlist_destroy(nvl);
2341 return (ret);
2342 }
2343
2344 int
pfctl_table_add_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * nadd,int flags)2345 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2346 *addr, int size, int *nadd, int flags)
2347 {
2348 struct pfioc_table io;
2349
2350 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2351 return (EINVAL);
2352 }
2353 bzero(&io, sizeof io);
2354 io.pfrio_flags = flags;
2355 io.pfrio_table = *tbl;
2356 io.pfrio_buffer = addr;
2357 io.pfrio_esize = sizeof(*addr);
2358 io.pfrio_size = size;
2359
2360 if (ioctl(dev, DIOCRADDADDRS, &io))
2361 return (errno);
2362 if (nadd != NULL)
2363 *nadd = io.pfrio_nadd;
2364 return (0);
2365 }
2366
2367 int
pfctl_table_del_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * ndel,int flags)2368 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2369 *addr, int size, int *ndel, int flags)
2370 {
2371 struct pfioc_table io;
2372
2373 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2374 return (EINVAL);
2375 }
2376 bzero(&io, sizeof io);
2377 io.pfrio_flags = flags;
2378 io.pfrio_table = *tbl;
2379 io.pfrio_buffer = addr;
2380 io.pfrio_esize = sizeof(*addr);
2381 io.pfrio_size = size;
2382
2383 if (ioctl(dev, DIOCRDELADDRS, &io))
2384 return (errno);
2385 if (ndel != NULL)
2386 *ndel = io.pfrio_ndel;
2387 return (0);
2388 }
2389
2390 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)2391 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2392 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags)
2393 {
2394 struct pfioc_table io;
2395
2396 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2397 return (EINVAL);
2398 }
2399 bzero(&io, sizeof io);
2400 io.pfrio_flags = flags;
2401 io.pfrio_table = *tbl;
2402 io.pfrio_buffer = addr;
2403 io.pfrio_esize = sizeof(*addr);
2404 io.pfrio_size = size;
2405 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0;
2406 if (ioctl(dev, DIOCRSETADDRS, &io))
2407 return (errno);
2408 if (nadd != NULL)
2409 *nadd = io.pfrio_nadd;
2410 if (ndel != NULL)
2411 *ndel = io.pfrio_ndel;
2412 if (nchange != NULL)
2413 *nchange = io.pfrio_nchange;
2414 if (size2 != NULL)
2415 *size2 = io.pfrio_size2;
2416 return (0);
2417 }
2418
pfctl_table_get_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int * size,int flags)2419 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr,
2420 int *size, int flags)
2421 {
2422 struct pfioc_table io;
2423
2424 if (tbl == NULL || size == NULL || *size < 0 ||
2425 (*size && addr == NULL)) {
2426 return (EINVAL);
2427 }
2428 bzero(&io, sizeof io);
2429 io.pfrio_flags = flags;
2430 io.pfrio_table = *tbl;
2431 io.pfrio_buffer = addr;
2432 io.pfrio_esize = sizeof(*addr);
2433 io.pfrio_size = *size;
2434 if (ioctl(dev, DIOCRGETADDRS, &io))
2435 return (errno);
2436 *size = io.pfrio_size;
2437 return (0);
2438 }
2439
2440 int
pfctl_set_statusif(struct pfctl_handle * h,const char * ifname)2441 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname)
2442 {
2443 struct snl_writer nw;
2444 struct snl_errmsg_data e = {};
2445 struct nlmsghdr *hdr;
2446 uint32_t seq_id;
2447 int family_id;
2448
2449 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2450 if (family_id == 0)
2451 return (ENOTSUP);
2452
2453 snl_init_writer(&h->ss, &nw);
2454 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF);
2455
2456 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname);
2457
2458 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2459 return (ENXIO);
2460
2461 seq_id = hdr->nlmsg_seq;
2462
2463 if (! snl_send_message(&h->ss, hdr))
2464 return (ENXIO);
2465
2466 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2467 }
2468
2469 return (e.error);
2470 }
2471
2472 #define _IN(_field) offsetof(struct genlmsghdr, _field)
2473 #define _OUT(_field) offsetof(struct pfctl_natlook, _field)
2474 static struct snl_attr_parser ap_natlook[] = {
2475 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr },
2476 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr },
2477 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 },
2478 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 },
2479 };
2480 static struct snl_field_parser fp_natlook[] = {};
2481 #undef _IN
2482 #undef _OUT
2483 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, fp_natlook, ap_natlook);
2484
2485 int
pfctl_natlook(struct pfctl_handle * h,const struct pfctl_natlook_key * k,struct pfctl_natlook * r)2486 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k,
2487 struct pfctl_natlook *r)
2488 {
2489 struct snl_writer nw;
2490 struct snl_errmsg_data e = {};
2491 struct nlmsghdr *hdr;
2492 uint32_t seq_id;
2493 int family_id;
2494
2495 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2496 if (family_id == 0)
2497 return (ENOTSUP);
2498
2499 snl_init_writer(&h->ss, &nw);
2500 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK);
2501 hdr->nlmsg_flags |= NLM_F_DUMP;
2502
2503 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af);
2504 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction);
2505 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto);
2506 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6);
2507 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6);
2508 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport);
2509 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport);
2510
2511 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2512 return (ENXIO);
2513
2514 seq_id = hdr->nlmsg_seq;
2515
2516 if (! snl_send_message(&h->ss, hdr))
2517 return (ENXIO);
2518
2519 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2520 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r))
2521 continue;
2522 }
2523
2524 return (e.error);
2525 }
2526
2527 int
pfctl_set_debug(struct pfctl_handle * h,uint32_t level)2528 pfctl_set_debug(struct pfctl_handle *h, uint32_t level)
2529 {
2530 struct snl_writer nw;
2531 struct snl_errmsg_data e = {};
2532 struct nlmsghdr *hdr;
2533 uint32_t seq_id;
2534 int family_id;
2535
2536 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2537 if (family_id == 0)
2538 return (ENOTSUP);
2539
2540 snl_init_writer(&h->ss, &nw);
2541 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG);
2542
2543 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level);
2544
2545 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2546 return (ENXIO);
2547
2548 seq_id = hdr->nlmsg_seq;
2549
2550 if (! snl_send_message(&h->ss, hdr))
2551 return (ENXIO);
2552
2553 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2554 }
2555
2556 return (e.error);
2557 }
2558
2559 int
pfctl_set_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t seconds)2560 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds)
2561 {
2562 struct snl_writer nw;
2563 struct snl_errmsg_data e = {};
2564 struct nlmsghdr *hdr;
2565 uint32_t seq_id;
2566 int family_id;
2567
2568 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2569 if (family_id == 0)
2570 return (ENOTSUP);
2571
2572 snl_init_writer(&h->ss, &nw);
2573 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT);
2574
2575 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2576 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds);
2577
2578 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2579 return (ENXIO);
2580
2581 seq_id = hdr->nlmsg_seq;
2582
2583 if (! snl_send_message(&h->ss, hdr))
2584 return (ENXIO);
2585
2586 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2587 }
2588
2589 return (e.error);
2590 }
2591
2592 struct pfctl_nl_timeout {
2593 uint32_t seconds;
2594 };
2595 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field)
2596 static struct snl_attr_parser ap_get_timeout[] = {
2597 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
2598 };
2599 static struct snl_field_parser fp_get_timeout[] = {};
2600 #undef _OUT
2601 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, fp_get_timeout, ap_get_timeout);
2602
2603 int
pfctl_get_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t * seconds)2604 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds)
2605 {
2606 struct snl_writer nw;
2607 struct pfctl_nl_timeout to = {};
2608 struct snl_errmsg_data e = {};
2609 struct nlmsghdr *hdr;
2610 uint32_t seq_id;
2611 int family_id;
2612
2613 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2614 if (family_id == 0)
2615 return (ENOTSUP);
2616
2617 snl_init_writer(&h->ss, &nw);
2618 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT);
2619 hdr->nlmsg_flags |= NLM_F_DUMP;
2620
2621 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2622
2623 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2624 return (ENXIO);
2625
2626 seq_id = hdr->nlmsg_seq;
2627
2628 if (! snl_send_message(&h->ss, hdr))
2629 return (ENXIO);
2630
2631 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2632 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to))
2633 continue;
2634 }
2635
2636 if (seconds != NULL)
2637 *seconds = to.seconds;
2638
2639 return (e.error);
2640 }
2641
2642 int
pfctl_set_limit(struct pfctl_handle * h,const int index,const uint limit)2643 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit)
2644 {
2645 struct snl_writer nw;
2646 struct snl_errmsg_data e = {};
2647 struct nlmsghdr *hdr;
2648 uint32_t seq_id;
2649 int family_id;
2650
2651 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2652 if (family_id == 0)
2653 return (ENOTSUP);
2654
2655 snl_init_writer(&h->ss, &nw);
2656 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT);
2657
2658 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2659 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit);
2660
2661 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2662 return (ENXIO);
2663
2664 seq_id = hdr->nlmsg_seq;
2665
2666 if (! snl_send_message(&h->ss, hdr))
2667 return (ENXIO);
2668
2669 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2670 }
2671
2672 return (e.error);
2673 }
2674
2675 struct pfctl_nl_limit {
2676 unsigned int limit;
2677 };
2678 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field)
2679 static struct snl_attr_parser ap_get_limit[] = {
2680 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
2681 };
2682 static struct snl_field_parser fp_get_limit[] = {};
2683 #undef _OUT
2684 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, fp_get_limit, ap_get_limit);
2685
2686 int
pfctl_get_limit(struct pfctl_handle * h,const int index,uint * limit)2687 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit)
2688 {
2689 struct snl_writer nw;
2690 struct pfctl_nl_limit li = {};
2691 struct snl_errmsg_data e = {};
2692 struct nlmsghdr *hdr;
2693 uint32_t seq_id;
2694 int family_id;
2695
2696 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2697 if (family_id == 0)
2698 return (ENOTSUP);
2699
2700 snl_init_writer(&h->ss, &nw);
2701 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT);
2702 hdr->nlmsg_flags |= NLM_F_DUMP;
2703
2704 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2705
2706 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2707 return (ENXIO);
2708
2709 seq_id = hdr->nlmsg_seq;
2710
2711 if (! snl_send_message(&h->ss, hdr))
2712 return (ENXIO);
2713
2714 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2715 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li))
2716 continue;
2717 }
2718
2719 if (limit != NULL)
2720 *limit = li.limit;
2721
2722 return (e.error);
2723 }
2724
2725 struct pfctl_nl_begin_addrs {
2726 uint32_t ticket;
2727 };
2728 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field)
2729 static struct snl_attr_parser ap_begin_addrs[] = {
2730 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2731 };
2732 static struct snl_field_parser fp_begin_addrs[] = {};
2733 #undef _OUT
2734 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, fp_begin_addrs, ap_begin_addrs);
2735
2736 int
pfctl_begin_addrs(struct pfctl_handle * h,uint32_t * ticket)2737 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket)
2738 {
2739 struct snl_writer nw;
2740 struct pfctl_nl_begin_addrs attrs = {};
2741 struct snl_errmsg_data e = {};
2742 struct nlmsghdr *hdr;
2743 uint32_t seq_id;
2744 int family_id;
2745
2746 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2747 if (family_id == 0)
2748 return (ENOTSUP);
2749
2750 snl_init_writer(&h->ss, &nw);
2751 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS);
2752 hdr->nlmsg_flags |= NLM_F_DUMP;
2753
2754 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2755 return (ENXIO);
2756
2757 seq_id = hdr->nlmsg_seq;
2758
2759 if (! snl_send_message(&h->ss, hdr))
2760 return (ENXIO);
2761
2762 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2763 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs))
2764 continue;
2765 }
2766
2767 if (ticket != NULL)
2768 *ticket = attrs.ticket;
2769
2770 return (e.error);
2771 }
2772
2773 int
pfctl_add_addr(struct pfctl_handle * h,const struct pfioc_pooladdr * pa)2774 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa)
2775 {
2776 struct snl_writer nw;
2777 struct snl_errmsg_data e = {};
2778 struct nlmsghdr *hdr;
2779 uint32_t seq_id;
2780 int family_id;
2781
2782 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2783 if (family_id == 0)
2784 return (ENOTSUP);
2785
2786 snl_init_writer(&h->ss, &nw);
2787 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR);
2788
2789 snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action);
2790 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket);
2791 snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr);
2792 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num);
2793 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action);
2794 snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last);
2795 snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af);
2796 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor);
2797 snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr);
2798
2799 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2800 return (ENXIO);
2801
2802 seq_id = hdr->nlmsg_seq;
2803
2804 if (! snl_send_message(&h->ss, hdr))
2805 return (ENXIO);
2806
2807 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2808 }
2809
2810 return (e.error);
2811 }
2812
2813 static const struct snl_attr_parser ap_get_addrs[] = {
2814 { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 },
2815 };
2816 static struct snl_field_parser fp_get_addrs[] = {};
2817 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, fp_get_addrs, ap_get_addrs);
2818
2819 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)2820 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2821 uint8_t r_action, const char *anchor, uint32_t *nr)
2822 {
2823 struct snl_writer nw;
2824 struct snl_errmsg_data e = {};
2825 struct nlmsghdr *hdr;
2826 uint32_t seq_id;
2827 int family_id;
2828
2829 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2830 if (family_id == 0)
2831 return (ENOTSUP);
2832
2833 snl_init_writer(&h->ss, &nw);
2834 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS);
2835
2836 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2837 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2838 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2839 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2840
2841 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2842 return (ENXIO);
2843
2844 seq_id = hdr->nlmsg_seq;
2845
2846 if (! snl_send_message(&h->ss, hdr))
2847 return (ENXIO);
2848
2849 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2850 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr))
2851 continue;
2852 }
2853
2854 return (e.error);
2855 }
2856
2857 #define _OUT(_field) offsetof(struct pf_pooladdr, _field)
2858 static const struct snl_attr_parser ap_pool_addr[] = {
2859 { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
2860 { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
2861 };
2862 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr);
2863 #undef _OUT
2864
2865 #define _OUT(_field) offsetof(struct pfioc_pooladdr, _field)
2866 static const struct snl_attr_parser ap_get_addr[] = {
2867 { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 },
2868 { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2869 { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
2870 { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 },
2871 { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 },
2872 { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 },
2873 { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
2874 { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string },
2875 { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested },
2876 };
2877 static struct snl_field_parser fp_get_addr[] = {};
2878 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, fp_get_addr, ap_get_addr);
2879 #undef _OUT
2880
2881 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)2882 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2883 uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa)
2884 {
2885 struct snl_writer nw;
2886 struct snl_errmsg_data e = {};
2887 struct nlmsghdr *hdr;
2888 uint32_t seq_id;
2889 int family_id;
2890
2891 family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2892 if (family_id == 0)
2893 return (ENOTSUP);
2894
2895 snl_init_writer(&h->ss, &nw);
2896 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR);
2897
2898 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2899 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2900 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2901 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2902 snl_add_msg_attr_u32(&nw, PF_AA_NR, nr);
2903
2904 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2905 return (ENXIO);
2906
2907 seq_id = hdr->nlmsg_seq;
2908
2909 if (! snl_send_message(&h->ss, hdr))
2910 return (ENXIO);
2911
2912 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2913 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa))
2914 continue;
2915 }
2916
2917 return (e.error);
2918 }
2919
2920 #define _OUT(_field) offsetof(struct pfioc_ruleset, _field)
2921 static const struct snl_attr_parser ap_ruleset[] = {
2922 { .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
2923 { .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string },
2924 };
2925 static struct snl_field_parser fp_ruleset[] = {};
2926 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, fp_ruleset, ap_ruleset);
2927 #undef _OUT
2928
2929 int
pfctl_get_rulesets(struct pfctl_handle * h,const char * path,uint32_t * nr)2930 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr)
2931 {
2932 struct snl_writer nw;
2933 struct snl_errmsg_data e = {};
2934 struct nlmsghdr *hdr;
2935 struct pfioc_ruleset rs = {};
2936 uint32_t seq_id;
2937 int family_id;
2938
2939 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2940 if (family_id == 0)
2941 return (ENOTSUP);
2942
2943 snl_init_writer(&h->ss, &nw);
2944 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS);
2945
2946 snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
2947
2948 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2949 return (ENXIO);
2950
2951 seq_id = hdr->nlmsg_seq;
2952
2953 if (! snl_send_message(&h->ss, hdr))
2954 return (ENXIO);
2955
2956 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2957 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs))
2958 continue;
2959 }
2960
2961 *nr = rs.nr;
2962
2963 return (e.error);
2964 }
2965
2966 int
pfctl_get_ruleset(struct pfctl_handle * h,const char * path,uint32_t nr,struct pfioc_ruleset * rs)2967 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs)
2968 {
2969 struct snl_writer nw;
2970 struct snl_errmsg_data e = {};
2971 struct nlmsghdr *hdr;
2972 uint32_t seq_id;
2973 int family_id;
2974
2975 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2976 if (family_id == 0)
2977 return (ENOTSUP);
2978
2979 snl_init_writer(&h->ss, &nw);
2980 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET);
2981
2982 snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
2983 snl_add_msg_attr_u32(&nw, PF_RS_NR, nr);
2984
2985 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2986 return (ENXIO);
2987
2988 seq_id = hdr->nlmsg_seq;
2989
2990 if (! snl_send_message(&h->ss, hdr))
2991 return (ENXIO);
2992
2993 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2994 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs))
2995 continue;
2996 }
2997
2998 return (e.error);
2999 }
3000
3001 #define _OUT(_field) offsetof(struct pfctl_threshold, _field)
3002 static const struct snl_attr_parser ap_pfctl_threshold[] = {
3003 { .type = PF_TH_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
3004 { .type = PF_TH_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
3005 { .type = PF_TH_COUNT, .off = _OUT(count), .cb = snl_attr_get_uint32 },
3006 { .type = PF_TH_LAST, .off = _OUT(last), .cb = snl_attr_get_uint32 },
3007 };
3008 SNL_DECLARE_ATTR_PARSER(pfctl_threshold_parser, ap_pfctl_threshold);
3009 #undef _OUT
3010
3011 #define _OUT(_field) offsetof(struct pfctl_src_node, _field)
3012 static struct snl_attr_parser ap_srcnode[] = {
3013 { .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr },
3014 { .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr },
3015 { .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
3016 { .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
3017 { .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
3018 { .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
3019 { .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
3020 { .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
3021 { .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 },
3022 { .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
3023 { .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 },
3024 { .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 },
3025 { .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 },
3026 { .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested },
3027 };
3028 static struct snl_field_parser fp_srcnode[] = {};
3029 #undef _OUT
3030 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, fp_srcnode, ap_srcnode);
3031
3032 int
pfctl_get_srcnodes(struct pfctl_handle * h,pfctl_get_srcnode_fn fn,void * arg)3033 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg)
3034 {
3035 struct snl_writer nw;
3036 struct pfctl_src_node sn;
3037 struct snl_errmsg_data e = {};
3038 struct nlmsghdr *hdr;
3039 uint32_t seq_id;
3040 int family_id;
3041 int ret;
3042
3043 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3044 if (family_id == 0)
3045 return (ENOTSUP);
3046
3047 snl_init_writer(&h->ss, &nw);
3048 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES);
3049
3050 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3051 return (ENXIO);
3052
3053 seq_id = hdr->nlmsg_seq;
3054
3055 if (!snl_send_message(&h->ss, hdr))
3056 return (ENXIO);
3057
3058 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3059 if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn))
3060 continue;
3061
3062 ret = fn(&sn, arg);
3063 if (ret != 0)
3064 return (ret);
3065 }
3066
3067 return (e.error);
3068 }
3069