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 SNL_DECLARE_PARSER(getstatus_parser, struct genlmsghdr, snl_f_p_empty, ap_getstatus);
396 #undef _OUT
397
398 struct pfctl_status *
pfctl_get_status_h(struct pfctl_handle * h __unused)399 pfctl_get_status_h(struct pfctl_handle *h __unused)
400 {
401 struct pfctl_status *status;
402 struct snl_errmsg_data e = {};
403 struct nlmsghdr *hdr;
404 struct snl_writer nw;
405 uint32_t seq_id;
406 int family_id;
407
408 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
409 if (family_id == 0)
410 return (NULL);
411
412 snl_init_writer(&h->ss, &nw);
413 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_STATUS);
414 hdr->nlmsg_flags |= NLM_F_DUMP;
415
416 hdr = snl_finalize_msg(&nw);
417 if (hdr == NULL) {
418 return (NULL);
419 }
420
421 seq_id = hdr->nlmsg_seq;
422 if (! snl_send_message(&h->ss, hdr))
423 return (NULL);
424
425 status = calloc(1, sizeof(*status));
426 if (status == NULL)
427 return (NULL);
428 TAILQ_INIT(&status->counters);
429 TAILQ_INIT(&status->lcounters);
430 TAILQ_INIT(&status->fcounters);
431 TAILQ_INIT(&status->scounters);
432
433 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
434 if (! snl_parse_nlmsg(&h->ss, hdr, &getstatus_parser, status))
435 continue;
436 }
437
438 return (status);
439 }
440
441 struct pfctl_status *
pfctl_get_status(int dev)442 pfctl_get_status(int dev)
443 {
444 struct pfctl_status *status;
445 nvlist_t *nvl;
446 size_t len;
447 const void *chksum;
448
449 status = calloc(1, sizeof(*status));
450 if (status == NULL)
451 return (NULL);
452
453 nvl = nvlist_create(0);
454
455 if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) {
456 nvlist_destroy(nvl);
457 free(status);
458 return (NULL);
459 }
460
461 status->running = nvlist_get_bool(nvl, "running");
462 status->since = nvlist_get_number(nvl, "since");
463 status->debug = nvlist_get_number(nvl, "debug");
464 status->hostid = ntohl(nvlist_get_number(nvl, "hostid"));
465 status->states = nvlist_get_number(nvl, "states");
466 status->src_nodes = nvlist_get_number(nvl, "src_nodes");
467 status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active");
468 status->reass = nvlist_get_number(nvl, "reass");
469
470 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"),
471 IFNAMSIZ);
472 chksum = nvlist_get_binary(nvl, "chksum", &len);
473 assert(len == PF_MD5_DIGEST_LENGTH);
474 memcpy(status->pf_chksum, chksum, len);
475
476 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"),
477 &status->counters);
478 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"),
479 &status->lcounters);
480 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"),
481 &status->fcounters);
482 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"),
483 &status->scounters);
484
485 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2,
486 (uint64_t *)status->pcounters, NULL);
487 pf_nvuint_64_array(nvl, "bcounters", 2 * 2,
488 (uint64_t *)status->bcounters, NULL);
489
490 nvlist_destroy(nvl);
491
492 return (status);
493 }
494 int
pfctl_clear_status(struct pfctl_handle * h)495 pfctl_clear_status(struct pfctl_handle *h)
496 {
497 return (pfctl_do_netlink_cmd(h, PFNL_CMD_CLEAR_STATUS));
498 }
499
500 static uint64_t
_pfctl_status_counter(struct pfctl_status_counters * counters,uint64_t id)501 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id)
502 {
503 struct pfctl_status_counter *c;
504
505 TAILQ_FOREACH(c, counters, entry) {
506 if (c->id == id)
507 return (c->counter);
508 }
509
510 return (0);
511 }
512
513 uint64_t
pfctl_status_counter(struct pfctl_status * status,int id)514 pfctl_status_counter(struct pfctl_status *status, int id)
515 {
516 return (_pfctl_status_counter(&status->counters, id));
517 }
518
519 uint64_t
pfctl_status_lcounter(struct pfctl_status * status,int id)520 pfctl_status_lcounter(struct pfctl_status *status, int id)
521 {
522 return (_pfctl_status_counter(&status->lcounters, id));
523 }
524
525 uint64_t
pfctl_status_fcounter(struct pfctl_status * status,int id)526 pfctl_status_fcounter(struct pfctl_status *status, int id)
527 {
528 return (_pfctl_status_counter(&status->fcounters, id));
529 }
530
531 uint64_t
pfctl_status_scounter(struct pfctl_status * status,int id)532 pfctl_status_scounter(struct pfctl_status *status, int id)
533 {
534 return (_pfctl_status_counter(&status->scounters, id));
535 }
536
537 void
pfctl_free_status(struct pfctl_status * status)538 pfctl_free_status(struct pfctl_status *status)
539 {
540 struct pfctl_status_counter *c, *tmp;
541
542 if (status == NULL)
543 return;
544
545 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) {
546 free(c->name);
547 free(c);
548 }
549 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) {
550 free(c->name);
551 free(c);
552 }
553 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) {
554 free(c->name);
555 free(c);
556 }
557 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) {
558 free(c->name);
559 free(c);
560 }
561
562 free(status);
563 }
564
565 static void
pfctl_nv_add_addr(nvlist_t * nvparent,const char * name,const struct pf_addr * addr)566 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name,
567 const struct pf_addr *addr)
568 {
569 nvlist_t *nvl = nvlist_create(0);
570
571 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr));
572
573 nvlist_add_nvlist(nvparent, name, nvl);
574 nvlist_destroy(nvl);
575 }
576
577 static void
pf_nvaddr_to_addr(const nvlist_t * nvl,struct pf_addr * addr)578 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr)
579 {
580 size_t len;
581 const void *data;
582
583 data = nvlist_get_binary(nvl, "addr", &len);
584 assert(len == sizeof(struct pf_addr));
585 memcpy(addr, data, len);
586 }
587
588 static void
pfctl_nv_add_addr_wrap(nvlist_t * nvparent,const char * name,const struct pf_addr_wrap * addr)589 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name,
590 const struct pf_addr_wrap *addr)
591 {
592 nvlist_t *nvl = nvlist_create(0);
593
594 nvlist_add_number(nvl, "type", addr->type);
595 nvlist_add_number(nvl, "iflags", addr->iflags);
596 if (addr->type == PF_ADDR_DYNIFTL)
597 nvlist_add_string(nvl, "ifname", addr->v.ifname);
598 if (addr->type == PF_ADDR_TABLE)
599 nvlist_add_string(nvl, "tblname", addr->v.tblname);
600 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr);
601 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask);
602
603 nvlist_add_nvlist(nvparent, name, nvl);
604 nvlist_destroy(nvl);
605 }
606
607 static void
pf_nvaddr_wrap_to_addr_wrap(const nvlist_t * nvl,struct pf_addr_wrap * addr)608 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr)
609 {
610 bzero(addr, sizeof(*addr));
611
612 addr->type = nvlist_get_number(nvl, "type");
613 addr->iflags = nvlist_get_number(nvl, "iflags");
614 if (addr->type == PF_ADDR_DYNIFTL) {
615 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"),
616 IFNAMSIZ);
617 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt");
618 }
619 if (addr->type == PF_ADDR_TABLE) {
620 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"),
621 PF_TABLE_NAME_SIZE);
622 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt");
623 }
624
625 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr);
626 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask);
627 }
628
629 static void
pfctl_nv_add_rule_addr(nvlist_t * nvparent,const char * name,const struct pf_rule_addr * addr)630 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name,
631 const struct pf_rule_addr *addr)
632 {
633 uint64_t ports[2];
634 nvlist_t *nvl = nvlist_create(0);
635
636 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr);
637 ports[0] = addr->port[0];
638 ports[1] = addr->port[1];
639 nvlist_add_number_array(nvl, "port", ports, 2);
640 nvlist_add_number(nvl, "neg", addr->neg);
641 nvlist_add_number(nvl, "port_op", addr->port_op);
642
643 nvlist_add_nvlist(nvparent, name, nvl);
644 nvlist_destroy(nvl);
645 }
646
647 static void
pf_nvrule_addr_to_rule_addr(const nvlist_t * nvl,struct pf_rule_addr * addr)648 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr)
649 {
650 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr);
651
652 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL);
653 addr->neg = nvlist_get_number(nvl, "neg");
654 addr->port_op = nvlist_get_number(nvl, "port_op");
655 }
656
657 static void
pf_nvmape_to_mape(const nvlist_t * nvl,struct pf_mape_portset * mape)658 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape)
659 {
660 mape->offset = nvlist_get_number(nvl, "offset");
661 mape->psidlen = nvlist_get_number(nvl, "psidlen");
662 mape->psid = nvlist_get_number(nvl, "psid");
663 }
664
665 static void
pf_nvpool_to_pool(const nvlist_t * nvl,struct pfctl_pool * pool)666 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool)
667 {
668 size_t len;
669 const void *data;
670
671 data = nvlist_get_binary(nvl, "key", &len);
672 assert(len == sizeof(pool->key));
673 memcpy(&pool->key, data, len);
674
675 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter);
676
677 pool->tblidx = nvlist_get_number(nvl, "tblidx");
678 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL);
679 pool->opts = nvlist_get_number(nvl, "opts");
680
681 if (nvlist_exists_nvlist(nvl, "mape"))
682 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape);
683 }
684
685 static void
pf_nvrule_uid_to_rule_uid(const nvlist_t * nvl,struct pf_rule_uid * uid)686 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid)
687 {
688 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL);
689 uid->op = nvlist_get_number(nvl, "op");
690 }
691
692 static void
pf_nvdivert_to_divert(const nvlist_t * nvl,struct pfctl_rule * rule)693 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule)
694 {
695 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr);
696 rule->divert.port = nvlist_get_number(nvl, "port");
697 }
698
699 static void
pf_nvrule_to_rule(const nvlist_t * nvl,struct pfctl_rule * rule)700 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule)
701 {
702 const uint64_t *skip;
703 const char *const *labels;
704 size_t skipcount, labelcount;
705
706 rule->nr = nvlist_get_number(nvl, "nr");
707
708 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src);
709 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst);
710
711 skip = nvlist_get_number_array(nvl, "skip", &skipcount);
712 assert(skip);
713 assert(skipcount == PF_SKIP_COUNT);
714 for (int i = 0; i < PF_SKIP_COUNT; i++)
715 rule->skip[i].nr = skip[i];
716
717 labels = nvlist_get_string_array(nvl, "labels", &labelcount);
718 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
719 for (size_t i = 0; i < labelcount; i++)
720 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
721 rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
722 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
723 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
724 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE);
725 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
726 PF_TAG_NAME_SIZE);
727 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
728 PF_TAG_NAME_SIZE);
729
730 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"),
731 PF_TABLE_NAME_SIZE);
732
733 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rdr);
734
735 rule->evaluations = nvlist_get_number(nvl, "evaluations");
736 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL);
737 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL);
738
739 if (nvlist_exists_number(nvl, "timestamp")) {
740 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
741 }
742
743 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint");
744
745 rule->rtableid = nvlist_get_number(nvl, "rtableid");
746 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL);
747 rule->max_states = nvlist_get_number(nvl, "max_states");
748 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes");
749 rule->max_src_states = nvlist_get_number(nvl, "max_src_states");
750 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn");
751 rule->max_src_conn_rate.limit =
752 nvlist_get_number(nvl, "max_src_conn_rate.limit");
753 rule->max_src_conn_rate.seconds =
754 nvlist_get_number(nvl, "max_src_conn_rate.seconds");
755 rule->qid = nvlist_get_number(nvl, "qid");
756 rule->pqid = nvlist_get_number(nvl, "pqid");
757 rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
758 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe");
759 rule->free_flags = nvlist_get_number(nvl, "dnflags");
760 rule->prob = nvlist_get_number(nvl, "prob");
761 rule->cuid = nvlist_get_number(nvl, "cuid");
762 rule->cpid = nvlist_get_number(nvl, "cpid");
763
764 rule->return_icmp = nvlist_get_number(nvl, "return_icmp");
765 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6");
766 rule->max_mss = nvlist_get_number(nvl, "max_mss");
767 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags");
768
769 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid);
770 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"),
771 (struct pf_rule_uid *)&rule->gid);
772
773 rule->rule_flag = nvlist_get_number(nvl, "rule_flag");
774 rule->action = nvlist_get_number(nvl, "action");
775 rule->direction = nvlist_get_number(nvl, "direction");
776 rule->log = nvlist_get_number(nvl, "log");
777 rule->logif = nvlist_get_number(nvl, "logif");
778 rule->quick = nvlist_get_number(nvl, "quick");
779 rule->ifnot = nvlist_get_number(nvl, "ifnot");
780 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not");
781 rule->natpass = nvlist_get_number(nvl, "natpass");
782
783 rule->keep_state = nvlist_get_number(nvl, "keep_state");
784 rule->af = nvlist_get_number(nvl, "af");
785 rule->proto = nvlist_get_number(nvl, "proto");
786 rule->type = nvlist_get_number(nvl, "type");
787 rule->code = nvlist_get_number(nvl, "code");
788 rule->flags = nvlist_get_number(nvl, "flags");
789 rule->flagset = nvlist_get_number(nvl, "flagset");
790 rule->min_ttl = nvlist_get_number(nvl, "min_ttl");
791 rule->allow_opts = nvlist_get_number(nvl, "allow_opts");
792 rule->rt = nvlist_get_number(nvl, "rt");
793 rule->return_ttl = nvlist_get_number(nvl, "return_ttl");
794 rule->tos = nvlist_get_number(nvl, "tos");
795 rule->set_tos = nvlist_get_number(nvl, "set_tos");
796 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
797 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
798
799 rule->flush = nvlist_get_number(nvl, "flush");
800 rule->prio = nvlist_get_number(nvl, "prio");
801 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL);
802
803 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule);
804
805 rule->states_cur = nvlist_get_number(nvl, "states_cur");
806 rule->states_tot = nvlist_get_number(nvl, "states_tot");
807 rule->src_nodes = nvlist_get_number(nvl, "src_nodes");
808 }
809
810 static void
pfctl_nveth_addr_to_eth_addr(const nvlist_t * nvl,struct pfctl_eth_addr * addr)811 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr)
812 {
813 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 };
814 size_t len;
815 const void *data;
816
817 data = nvlist_get_binary(nvl, "addr", &len);
818 assert(len == sizeof(addr->addr));
819 memcpy(addr->addr, data, sizeof(addr->addr));
820
821 data = nvlist_get_binary(nvl, "mask", &len);
822 assert(len == sizeof(addr->mask));
823 memcpy(addr->mask, data, sizeof(addr->mask));
824
825 addr->neg = nvlist_get_bool(nvl, "neg");
826
827 /* To make checks for 'is this address set?' easier. */
828 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0;
829 }
830
831 static nvlist_t *
pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr * addr)832 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr)
833 {
834 nvlist_t *nvl;
835
836 nvl = nvlist_create(0);
837 if (nvl == NULL)
838 return (NULL);
839
840 nvlist_add_bool(nvl, "neg", addr->neg);
841 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN);
842 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN);
843
844 return (nvl);
845 }
846
847 static void
pfctl_nveth_rule_to_eth_rule(const nvlist_t * nvl,struct pfctl_eth_rule * rule)848 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule)
849 {
850 const char *const *labels;
851 size_t labelcount, i;
852
853 rule->nr = nvlist_get_number(nvl, "nr");
854 rule->quick = nvlist_get_bool(nvl, "quick");
855 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
856 rule->ifnot = nvlist_get_bool(nvl, "ifnot");
857 rule->direction = nvlist_get_number(nvl, "direction");
858 rule->proto = nvlist_get_number(nvl, "proto");
859 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
860 PF_TAG_NAME_SIZE);
861 rule->match_tag = nvlist_get_number(nvl, "match_tag");
862 rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not");
863
864 labels = nvlist_get_string_array(nvl, "labels", &labelcount);
865 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
866 for (i = 0; i < labelcount; i++)
867 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
868 rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
869
870 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"),
871 &rule->src);
872 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"),
873 &rule->dst);
874
875 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"),
876 &rule->ipsrc);
877 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"),
878 &rule->ipdst);
879
880 rule->evaluations = nvlist_get_number(nvl, "evaluations");
881 rule->packets[0] = nvlist_get_number(nvl, "packets-in");
882 rule->packets[1] = nvlist_get_number(nvl, "packets-out");
883 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in");
884 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out");
885
886 if (nvlist_exists_number(nvl, "timestamp")) {
887 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
888 }
889
890 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
891 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
892 PF_TAG_NAME_SIZE);
893
894 rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
895 rule->dnflags = nvlist_get_number(nvl, "dnflags");
896
897 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
898 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
899
900 strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"),
901 IFNAMSIZ);
902
903 rule->action = nvlist_get_number(nvl, "action");
904 }
905
906 int
pfctl_get_eth_rulesets_info(int dev,struct pfctl_eth_rulesets_info * ri,const char * path)907 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri,
908 const char *path)
909 {
910 nvlist_t *nvl;
911 int ret;
912
913 bzero(ri, sizeof(*ri));
914
915 nvl = nvlist_create(0);
916 nvlist_add_string(nvl, "path", path);
917
918 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0)
919 goto out;
920
921 ri->nr = nvlist_get_number(nvl, "nr");
922
923 out:
924 nvlist_destroy(nvl);
925 return (ret);
926 }
927
928 int
pfctl_get_eth_ruleset(int dev,const char * path,int nr,struct pfctl_eth_ruleset_info * ri)929 pfctl_get_eth_ruleset(int dev, const char *path, int nr,
930 struct pfctl_eth_ruleset_info *ri)
931 {
932 nvlist_t *nvl;
933 int ret;
934
935 bzero(ri, sizeof(*ri));
936
937 nvl = nvlist_create(0);
938 nvlist_add_string(nvl, "path", path);
939 nvlist_add_number(nvl, "nr", nr);
940
941 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0)
942 goto out;
943
944 ri->nr = nvlist_get_number(nvl, "nr");
945 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN);
946 strlcpy(ri->name, nvlist_get_string(nvl, "name"),
947 PF_ANCHOR_NAME_SIZE);
948
949 out:
950 nvlist_destroy(nvl);
951 return (ret);
952 }
953
954 int
pfctl_get_eth_rules_info(int dev,struct pfctl_eth_rules_info * rules,const char * path)955 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules,
956 const char *path)
957 {
958 nvlist_t *nvl;
959 int ret;
960
961 bzero(rules, sizeof(*rules));
962
963 nvl = nvlist_create(0);
964 nvlist_add_string(nvl, "anchor", path);
965
966 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0)
967 goto out;
968
969 rules->nr = nvlist_get_number(nvl, "nr");
970 rules->ticket = nvlist_get_number(nvl, "ticket");
971
972 out:
973 nvlist_destroy(nvl);
974 return (ret);
975 }
976
977 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)978 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket,
979 const char *path, struct pfctl_eth_rule *rule, bool clear,
980 char *anchor_call)
981 {
982 nvlist_t *nvl;
983 int ret;
984
985 nvl = nvlist_create(0);
986
987 nvlist_add_string(nvl, "anchor", path);
988 nvlist_add_number(nvl, "ticket", ticket);
989 nvlist_add_number(nvl, "nr", nr);
990 nvlist_add_bool(nvl, "clear", clear);
991
992 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0)
993 goto out;
994
995 pfctl_nveth_rule_to_eth_rule(nvl, rule);
996
997 if (anchor_call)
998 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
999 MAXPATHLEN);
1000
1001 out:
1002 nvlist_destroy(nvl);
1003 return (ret);
1004 }
1005
1006 int
pfctl_add_eth_rule(int dev,const struct pfctl_eth_rule * r,const char * anchor,const char * anchor_call,uint32_t ticket)1007 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor,
1008 const char *anchor_call, uint32_t ticket)
1009 {
1010 struct pfioc_nv nv;
1011 nvlist_t *nvl, *addr;
1012 void *packed;
1013 int error = 0;
1014 size_t labelcount, size;
1015
1016 nvl = nvlist_create(0);
1017
1018 nvlist_add_number(nvl, "ticket", ticket);
1019 nvlist_add_string(nvl, "anchor", anchor);
1020 nvlist_add_string(nvl, "anchor_call", anchor_call);
1021
1022 nvlist_add_number(nvl, "nr", r->nr);
1023 nvlist_add_bool(nvl, "quick", r->quick);
1024 nvlist_add_string(nvl, "ifname", r->ifname);
1025 nvlist_add_bool(nvl, "ifnot", r->ifnot);
1026 nvlist_add_number(nvl, "direction", r->direction);
1027 nvlist_add_number(nvl, "proto", r->proto);
1028 nvlist_add_string(nvl, "match_tagname", r->match_tagname);
1029 nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not);
1030
1031 addr = pfctl_eth_addr_to_nveth_addr(&r->src);
1032 if (addr == NULL) {
1033 nvlist_destroy(nvl);
1034 return (ENOMEM);
1035 }
1036 nvlist_add_nvlist(nvl, "src", addr);
1037 nvlist_destroy(addr);
1038
1039 addr = pfctl_eth_addr_to_nveth_addr(&r->dst);
1040 if (addr == NULL) {
1041 nvlist_destroy(nvl);
1042 return (ENOMEM);
1043 }
1044 nvlist_add_nvlist(nvl, "dst", addr);
1045 nvlist_destroy(addr);
1046
1047 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc);
1048 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst);
1049
1050 labelcount = 0;
1051 while (labelcount < PF_RULE_MAX_LABEL_COUNT &&
1052 r->label[labelcount][0] != 0) {
1053 nvlist_append_string_array(nvl, "labels",
1054 r->label[labelcount]);
1055 labelcount++;
1056 }
1057 nvlist_add_number(nvl, "ridentifier", r->ridentifier);
1058
1059 nvlist_add_string(nvl, "qname", r->qname);
1060 nvlist_add_string(nvl, "tagname", r->tagname);
1061 nvlist_add_number(nvl, "dnpipe", r->dnpipe);
1062 nvlist_add_number(nvl, "dnflags", r->dnflags);
1063
1064 nvlist_add_string(nvl, "bridge_to", r->bridge_to);
1065
1066 nvlist_add_number(nvl, "action", r->action);
1067
1068 packed = nvlist_pack(nvl, &size);
1069 if (packed == NULL) {
1070 nvlist_destroy(nvl);
1071 return (ENOMEM);
1072 }
1073
1074 nv.len = size;
1075 nv.size = size;
1076 nv.data = packed;
1077
1078 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0)
1079 error = errno;
1080
1081 free(packed);
1082 nvlist_destroy(nvl);
1083
1084 return (error);
1085 }
1086
1087 static void
snl_add_msg_attr_addr_wrap(struct snl_writer * nw,uint32_t type,const struct pf_addr_wrap * addr)1088 snl_add_msg_attr_addr_wrap(struct snl_writer *nw, uint32_t type, const struct pf_addr_wrap *addr)
1089 {
1090 int off;
1091
1092 off = snl_add_msg_attr_nested(nw, type);
1093
1094 snl_add_msg_attr_ip6(nw, PF_AT_ADDR, &addr->v.a.addr.v6);
1095 snl_add_msg_attr_ip6(nw, PF_AT_MASK, &addr->v.a.mask.v6);
1096
1097 if (addr->type == PF_ADDR_DYNIFTL)
1098 snl_add_msg_attr_string(nw, PF_AT_IFNAME, addr->v.ifname);
1099 if (addr->type == PF_ADDR_TABLE)
1100 snl_add_msg_attr_string(nw, PF_AT_TABLENAME, addr->v.tblname);
1101 snl_add_msg_attr_u8(nw, PF_AT_TYPE, addr->type);
1102 snl_add_msg_attr_u8(nw, PF_AT_IFLAGS, addr->iflags);
1103
1104 snl_end_attr_nested(nw, off);
1105 }
1106
1107 static void
snl_add_msg_attr_pool_addr(struct snl_writer * nw,uint32_t type,const struct pf_pooladdr * pa)1108 snl_add_msg_attr_pool_addr(struct snl_writer *nw, uint32_t type, const struct pf_pooladdr *pa)
1109 {
1110 int off;
1111
1112 off = snl_add_msg_attr_nested(nw, type);
1113
1114 snl_add_msg_attr_string(nw, PF_PA_IFNAME, pa->ifname);
1115 snl_add_msg_attr_addr_wrap(nw, PF_PA_ADDR, &pa->addr);
1116
1117 snl_end_attr_nested(nw, off);
1118 }
1119
1120 static void
snl_add_msg_attr_rule_addr(struct snl_writer * nw,uint32_t type,const struct pf_rule_addr * addr)1121 snl_add_msg_attr_rule_addr(struct snl_writer *nw, uint32_t type, const struct pf_rule_addr *addr)
1122 {
1123 int off;
1124
1125 off = snl_add_msg_attr_nested(nw, type);
1126
1127 snl_add_msg_attr_addr_wrap(nw, PF_RAT_ADDR, &addr->addr);
1128 snl_add_msg_attr_u16(nw, PF_RAT_SRC_PORT, addr->port[0]);
1129 snl_add_msg_attr_u16(nw, PF_RAT_DST_PORT, addr->port[1]);
1130 snl_add_msg_attr_u8(nw, PF_RAT_NEG, addr->neg);
1131 snl_add_msg_attr_u8(nw, PF_RAT_OP, addr->port_op);
1132
1133 snl_end_attr_nested(nw, off);
1134 }
1135
1136 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])1137 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 {
1139 int off, i = 0;
1140
1141 off = snl_add_msg_attr_nested(nw, type);
1142
1143 while (i < PF_RULE_MAX_LABEL_COUNT &&
1144 labels[i][0] != 0) {
1145 snl_add_msg_attr_string(nw, PF_LT_LABEL, labels[i]);
1146 i++;
1147 }
1148
1149 snl_end_attr_nested(nw, off);
1150 }
1151
1152 static void
snl_add_msg_attr_mape(struct snl_writer * nw,uint32_t type,const struct pf_mape_portset * me)1153 snl_add_msg_attr_mape(struct snl_writer *nw, uint32_t type, const struct pf_mape_portset *me)
1154 {
1155 int off;
1156
1157 off = snl_add_msg_attr_nested(nw, type);
1158
1159 snl_add_msg_attr_u8(nw, PF_MET_OFFSET, me->offset);
1160 snl_add_msg_attr_u8(nw, PF_MET_PSID_LEN, me->psidlen);
1161 snl_add_msg_attr_u16(nw, PF_MET_PSID, me->psid);
1162
1163 snl_end_attr_nested(nw, off);
1164 }
1165
1166 static void
snl_add_msg_attr_rpool(struct snl_writer * nw,uint32_t type,const struct pfctl_pool * pool)1167 snl_add_msg_attr_rpool(struct snl_writer *nw, uint32_t type, const struct pfctl_pool *pool)
1168 {
1169 int off;
1170
1171 off = snl_add_msg_attr_nested(nw, type);
1172
1173 snl_add_msg_attr(nw, PF_PT_KEY, sizeof(pool->key), &pool->key);
1174 snl_add_msg_attr_ip6(nw, PF_PT_COUNTER, &pool->counter.v6);
1175 snl_add_msg_attr_u32(nw, PF_PT_TBLIDX, pool->tblidx);
1176 snl_add_msg_attr_u16(nw, PF_PT_PROXY_SRC_PORT, pool->proxy_port[0]);
1177 snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]);
1178 snl_add_msg_attr_u8(nw, PF_PT_OPTS, pool->opts);
1179 snl_add_msg_attr_mape(nw, PF_PT_MAPE, &pool->mape);
1180
1181 snl_end_attr_nested(nw, off);
1182 }
1183
1184 static void
snl_add_msg_attr_timeouts(struct snl_writer * nw,uint32_t type,const uint32_t * timeouts)1185 snl_add_msg_attr_timeouts(struct snl_writer *nw, uint32_t type, const uint32_t *timeouts)
1186 {
1187 int off;
1188
1189 off = snl_add_msg_attr_nested(nw, type);
1190
1191 for (int i = 0; i < PFTM_MAX; i++)
1192 snl_add_msg_attr_u32(nw, PF_TT_TIMEOUT, timeouts[i]);
1193
1194 snl_end_attr_nested(nw, off);
1195 }
1196
1197 static void
snl_add_msg_attr_uid(struct snl_writer * nw,uint32_t type,const struct pf_rule_uid * uid)1198 snl_add_msg_attr_uid(struct snl_writer *nw, uint32_t type, const struct pf_rule_uid *uid)
1199 {
1200 int off;
1201
1202 off = snl_add_msg_attr_nested(nw, type);
1203
1204 snl_add_msg_attr_u32(nw, PF_RUT_UID_LOW, uid->uid[0]);
1205 snl_add_msg_attr_u32(nw, PF_RUT_UID_HIGH, uid->uid[1]);
1206 snl_add_msg_attr_u8(nw, PF_RUT_OP, uid->op);
1207
1208 snl_end_attr_nested(nw, off);
1209 }
1210
1211 static void
snl_add_msg_attr_pf_rule(struct snl_writer * nw,uint32_t type,const struct pfctl_rule * r)1212 snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r)
1213 {
1214 int off;
1215
1216 off = snl_add_msg_attr_nested(nw, type);
1217
1218 snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src);
1219 snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst);
1220 snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label);
1221 snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier);
1222 snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname);
1223 snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname);
1224 snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname);
1225 snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname);
1226 snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname);
1227 snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname);
1228 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RDR, &r->rdr);
1229 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_NAT, &r->nat);
1230 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RT, &r->route);
1231 snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint);
1232 snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid);
1233 snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout);
1234 snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states);
1235 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes);
1236 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states);
1237 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN, r->max_src_conn);
1238 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit);
1239 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds);
1240
1241 snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe);
1242 snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe);
1243 snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags);
1244
1245 snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr);
1246 snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob);
1247 snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid);
1248 snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid);
1249
1250 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp);
1251 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6);
1252 snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss);
1253 snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags);
1254
1255 snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid);
1256 snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid);
1257 snl_add_msg_attr_string(nw, PF_RT_RCV_IFNAME, r->rcv_ifname);
1258
1259 snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag);
1260 snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action);
1261 snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction);
1262 snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log);
1263 snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif);
1264 snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick);
1265 snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot);
1266 snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not);
1267 snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass);
1268 snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state);
1269 snl_add_msg_attr_u8(nw, PF_RT_AF, r->af);
1270 snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto);
1271 snl_add_msg_attr_u8(nw, PF_RT_TYPE, r->type);
1272 snl_add_msg_attr_u8(nw, PF_RT_CODE, r->code);
1273 snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags);
1274 snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset);
1275 snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl);
1276 snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts);
1277 snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt);
1278 snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl);
1279 snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos);
1280 snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos);
1281
1282 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative);
1283 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard);
1284 snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush);
1285 snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio);
1286 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]);
1287 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]);
1288 snl_add_msg_attr_u8(nw, PF_RT_NAF, r->naf);
1289
1290 snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6);
1291 snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port);
1292
1293 snl_end_attr_nested(nw, off);
1294 }
1295
1296 int
pfctl_add_rule(int dev __unused,const struct pfctl_rule * r,const char * anchor,const char * anchor_call,uint32_t ticket,uint32_t pool_ticket)1297 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor,
1298 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket)
1299 {
1300 struct pfctl_handle *h;
1301 int ret;
1302
1303 h = pfctl_open(PF_DEVICE);
1304 if (h == NULL)
1305 return (ENODEV);
1306
1307 ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket);
1308
1309 pfctl_close(h);
1310
1311 return (ret);
1312 }
1313
1314 int
pfctl_add_rule_h(struct pfctl_handle * h,const struct pfctl_rule * r,const char * anchor,const char * anchor_call,uint32_t ticket,uint32_t pool_ticket)1315 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r,
1316 const char *anchor, const char *anchor_call, uint32_t ticket,
1317 uint32_t pool_ticket)
1318 {
1319 struct snl_writer nw;
1320 struct snl_errmsg_data e = {};
1321 struct nlmsghdr *hdr;
1322 uint32_t seq_id;
1323 int family_id;
1324
1325 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1326 if (family_id == 0)
1327 return (ENOTSUP);
1328
1329 snl_init_writer(&h->ss, &nw);
1330 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE);
1331 hdr->nlmsg_flags |= NLM_F_DUMP;
1332 snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket);
1333 snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket);
1334 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor);
1335 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call);
1336
1337 snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r);
1338
1339 if ((hdr = snl_finalize_msg(&nw)) == NULL)
1340 return (ENXIO);
1341
1342 seq_id = hdr->nlmsg_seq;
1343
1344 if (! snl_send_message(&h->ss, hdr))
1345 return (ENXIO);
1346
1347 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1348 }
1349
1350 return (e.error);
1351 }
1352
1353 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1354 #define _OUT(_field) offsetof(struct pfctl_rules_info, _field)
1355 static struct snl_attr_parser ap_getrules[] = {
1356 { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
1357 { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
1358 };
1359 #undef _IN
1360 #undef _OUT
1361 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, snl_f_p_empty, 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_RDR, .off = _OUT(r.rdr), .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 { .type = PF_RT_RPOOL_NAT, .off = _OUT(r.nat), .arg = &pool_parser, .cb = snl_attr_get_nested },
1664 { .type = PF_RT_NAF, .off = _OUT(r.naf), .cb = snl_attr_get_uint8 },
1665 { .type = PF_RT_RPOOL_RT, .off = _OUT(r.route), .arg = &pool_parser, .cb = snl_attr_get_nested },
1666 };
1667 #undef _OUT
1668 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, snl_f_p_empty, ap_getrule);
1669
1670 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)1671 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket,
1672 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1673 char *anchor_call, bool clear)
1674 {
1675 struct pfctl_nl_get_rule attrs = {};
1676 struct snl_errmsg_data e = {};
1677 struct nlmsghdr *hdr;
1678 struct snl_writer nw;
1679 uint32_t seq_id;
1680 int family_id;
1681
1682 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1683 if (family_id == 0)
1684 return (ENOTSUP);
1685
1686 snl_init_writer(&h->ss, &nw);
1687 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE);
1688 hdr->nlmsg_flags |= NLM_F_DUMP;
1689
1690 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor);
1691 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1692 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr);
1693 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket);
1694 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear);
1695
1696 hdr = snl_finalize_msg(&nw);
1697 if (hdr == NULL)
1698 return (ENOMEM);
1699
1700 seq_id = hdr->nlmsg_seq;
1701 if (! snl_send_message(&h->ss, hdr))
1702 return (ENXIO);
1703
1704 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1705 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs))
1706 continue;
1707 }
1708
1709 memcpy(rule, &attrs.r, sizeof(attrs.r));
1710 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN);
1711
1712 return (e.error);
1713 }
1714
1715 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)1716 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket,
1717 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1718 char *anchor_call, bool clear)
1719 {
1720 nvlist_t *nvl;
1721 int ret;
1722
1723 nvl = nvlist_create(0);
1724 if (nvl == 0)
1725 return (ENOMEM);
1726
1727 nvlist_add_number(nvl, "nr", nr);
1728 nvlist_add_number(nvl, "ticket", ticket);
1729 nvlist_add_string(nvl, "anchor", anchor);
1730 nvlist_add_number(nvl, "ruleset", ruleset);
1731
1732 if (clear)
1733 nvlist_add_bool(nvl, "clear_counter", true);
1734
1735 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0)
1736 goto out;
1737
1738 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule);
1739
1740 if (anchor_call)
1741 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1742 MAXPATHLEN);
1743
1744 out:
1745 nvlist_destroy(nvl);
1746 return (ret);
1747 }
1748
1749 int
pfctl_set_keepcounters(int dev,bool keep)1750 pfctl_set_keepcounters(int dev, bool keep)
1751 {
1752 struct pfioc_nv nv;
1753 nvlist_t *nvl;
1754 int ret;
1755
1756 nvl = nvlist_create(0);
1757
1758 nvlist_add_bool(nvl, "keep_counters", keep);
1759
1760 nv.data = nvlist_pack(nvl, &nv.len);
1761 nv.size = nv.len;
1762
1763 nvlist_destroy(nvl);
1764
1765 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv);
1766
1767 free(nv.data);
1768 return (ret);
1769 }
1770
1771 struct pfctl_creator {
1772 uint32_t id;
1773 };
1774 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1775 #define _OUT(_field) offsetof(struct pfctl_creator, _field)
1776 static struct snl_attr_parser ap_creators[] = {
1777 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
1778 };
1779 #undef _IN
1780 #undef _OUT
1781 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, snl_f_p_empty, 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 pfctl_state_key, _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 { .type = PF_STK_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
1874 { .type = PF_STK_PROTO, .off = _OUT(proto), .cb = snl_attr_get_uint16 },
1875 };
1876 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey);
1877 #undef _OUT
1878
1879 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1880 #define _OUT(_field) offsetof(struct pfctl_state, _field)
1881 static struct snl_attr_parser ap_state[] = {
1882 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 },
1883 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 },
1884 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname },
1885 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname },
1886 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1887 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1888 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested },
1889 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested },
1890 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr },
1891 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
1892 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 },
1893 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 },
1894 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 },
1895 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 },
1896 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
1897 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
1898 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
1899 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
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 #undef _IN
1913 #undef _OUT
1914 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, snl_f_p_empty, ap_state);
1915
1916 static const struct snl_hdr_parser *all_parsers[] = {
1917 &state_parser, &skey_parser, &speer_parser,
1918 &creator_parser, &getrules_parser
1919 };
1920
1921 static int
pfctl_get_states_nl(struct pfctl_state_filter * filter,struct snl_state * ss,pfctl_get_state_fn f,void * arg)1922 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg)
1923 {
1924 SNL_VERIFY_PARSERS(all_parsers);
1925 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1926 int ret;
1927
1928 struct nlmsghdr *hdr;
1929 struct snl_writer nw;
1930
1931 if (family_id == 0)
1932 return (ENOTSUP);
1933
1934 snl_init_writer(ss, &nw);
1935 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES);
1936 hdr->nlmsg_flags |= NLM_F_DUMP;
1937 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname);
1938 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto);
1939 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af);
1940 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6);
1941 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6);
1942
1943 hdr = snl_finalize_msg(&nw);
1944 if (hdr == NULL)
1945 return (ENOMEM);
1946
1947 uint32_t seq_id = hdr->nlmsg_seq;
1948
1949 snl_send_message(ss, hdr);
1950
1951 struct snl_errmsg_data e = {};
1952 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1953 struct pfctl_state s;
1954 bzero(&s, sizeof(s));
1955 if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s))
1956 continue;
1957
1958 ret = f(&s, arg);
1959 if (ret != 0)
1960 return (ret);
1961 }
1962
1963 return (0);
1964 }
1965
1966 int
pfctl_get_states_iter(pfctl_get_state_fn f,void * arg)1967 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg)
1968 {
1969 struct pfctl_state_filter filter = {};
1970 return (pfctl_get_filtered_states_iter(&filter, f, arg));
1971 }
1972
1973 int
pfctl_get_filtered_states_iter(struct pfctl_state_filter * filter,pfctl_get_state_fn f,void * arg)1974 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
1975 {
1976 struct snl_state ss = {};
1977 int error;
1978
1979 snl_init(&ss, NETLINK_GENERIC);
1980 error = pfctl_get_states_nl(filter, &ss, f, arg);
1981 snl_free(&ss);
1982
1983 return (error);
1984 }
1985
1986 static int
pfctl_append_states(struct pfctl_state * s,void * arg)1987 pfctl_append_states(struct pfctl_state *s, void *arg)
1988 {
1989 struct pfctl_state *new;
1990 struct pfctl_states *states = (struct pfctl_states *)arg;
1991
1992 new = malloc(sizeof(*s));
1993 if (new == NULL)
1994 return (ENOMEM);
1995
1996 memcpy(new, s, sizeof(*s));
1997
1998 TAILQ_INSERT_TAIL(&states->states, new, entry);
1999
2000 return (0);
2001 }
2002
2003 int
pfctl_get_states(int dev __unused,struct pfctl_states * states)2004 pfctl_get_states(int dev __unused, struct pfctl_states *states)
2005 {
2006 int ret;
2007
2008 bzero(states, sizeof(*states));
2009 TAILQ_INIT(&states->states);
2010
2011 ret = pfctl_get_states_iter(pfctl_append_states, states);
2012 if (ret != 0) {
2013 pfctl_free_states(states);
2014 return (ret);
2015 }
2016
2017 return (0);
2018 }
2019
2020 void
pfctl_free_states(struct pfctl_states * states)2021 pfctl_free_states(struct pfctl_states *states)
2022 {
2023 struct pfctl_state *s, *tmp;
2024
2025 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) {
2026 free(s);
2027 }
2028
2029 bzero(states, sizeof(*states));
2030 }
2031
2032 struct pfctl_nl_clear_states {
2033 uint32_t killed;
2034 };
2035 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field)
2036 static struct snl_attr_parser ap_clear_states[] = {
2037 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 },
2038 };
2039 #undef _OUT
2040 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, snl_f_p_empty, ap_clear_states);
2041
2042 static int
_pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed,int cmd)2043 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2044 unsigned int *killed, int cmd)
2045 {
2046 struct snl_writer nw;
2047 struct snl_errmsg_data e = {};
2048 struct pfctl_nl_clear_states attrs = {};
2049 struct nlmsghdr *hdr;
2050 uint32_t seq_id;
2051 int family_id;
2052
2053 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2054 if (family_id == 0)
2055 return (ENOTSUP);
2056
2057 snl_init_writer(&h->ss, &nw);
2058 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
2059 hdr->nlmsg_flags |= NLM_F_DUMP;
2060
2061 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id);
2062 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid));
2063 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction);
2064 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af);
2065 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto);
2066 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src);
2067 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst);
2068 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr);
2069 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname);
2070 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label);
2071 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match);
2072 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat);
2073
2074 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2075 return (ENXIO);
2076
2077 seq_id = hdr->nlmsg_seq;
2078
2079 if (! snl_send_message(&h->ss, hdr))
2080 return (ENXIO);
2081
2082 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2083 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs))
2084 continue;
2085 }
2086
2087 if (killed)
2088 *killed = attrs.killed;
2089
2090 return (e.error);
2091 }
2092
2093 int
pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2094 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2095 unsigned int *killed)
2096 {
2097 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES));
2098 }
2099
2100 int
pfctl_kill_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2101 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2102 unsigned int *killed)
2103 {
2104 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES));
2105 }
2106
2107 static int
_pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed,uint64_t cmd)2108 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2109 unsigned int *killed, uint64_t cmd)
2110 {
2111 struct pfctl_handle *h;
2112 int ret;
2113
2114 h = pfctl_open(PF_DEVICE);
2115 if (h == NULL)
2116 return (ENODEV);
2117
2118 ret = _pfctl_clear_states_h(h, kill, killed, cmd);
2119 pfctl_close(h);
2120
2121 return (ret);
2122 }
2123
2124 int
pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2125 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2126 unsigned int *killed)
2127 {
2128 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES));
2129 }
2130
2131 int
pfctl_kill_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2132 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed)
2133 {
2134 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES));
2135 }
2136
2137 int
pfctl_clear_rules(int dev,const char * anchorname)2138 pfctl_clear_rules(int dev, const char *anchorname)
2139 {
2140 struct pfioc_trans trans;
2141 struct pfioc_trans_e transe[2];
2142 int ret;
2143
2144 bzero(&trans, sizeof(trans));
2145 bzero(&transe, sizeof(transe));
2146
2147 transe[0].rs_num = PF_RULESET_SCRUB;
2148 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2149 >= sizeof(transe[0].anchor))
2150 return (E2BIG);
2151
2152 transe[1].rs_num = PF_RULESET_FILTER;
2153 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2154 >= sizeof(transe[1].anchor))
2155 return (E2BIG);
2156
2157 trans.size = 2;
2158 trans.esize = sizeof(transe[0]);
2159 trans.array = transe;
2160
2161 ret = ioctl(dev, DIOCXBEGIN, &trans);
2162 if (ret != 0)
2163 return (errno);
2164 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2165 if (ret != 0)
2166 return (errno);
2167
2168 return (0);
2169 }
2170
2171 int
pfctl_clear_nat(int dev,const char * anchorname)2172 pfctl_clear_nat(int dev, const char *anchorname)
2173 {
2174 struct pfioc_trans trans;
2175 struct pfioc_trans_e transe[3];
2176 int ret;
2177
2178 bzero(&trans, sizeof(trans));
2179 bzero(&transe, sizeof(transe));
2180
2181 transe[0].rs_num = PF_RULESET_NAT;
2182 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2183 >= sizeof(transe[0].anchor))
2184 return (E2BIG);
2185
2186 transe[1].rs_num = PF_RULESET_BINAT;
2187 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2188 >= sizeof(transe[0].anchor))
2189 return (E2BIG);
2190
2191 transe[2].rs_num = PF_RULESET_RDR;
2192 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor))
2193 >= sizeof(transe[2].anchor))
2194 return (E2BIG);
2195
2196 trans.size = 3;
2197 trans.esize = sizeof(transe[0]);
2198 trans.array = transe;
2199
2200 ret = ioctl(dev, DIOCXBEGIN, &trans);
2201 if (ret != 0)
2202 return (errno);
2203 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2204 if (ret != 0)
2205 return (errno);
2206
2207 return (0);
2208 }
2209
2210 int
pfctl_clear_eth_rules(int dev,const char * anchorname)2211 pfctl_clear_eth_rules(int dev, const char *anchorname)
2212 {
2213 struct pfioc_trans trans;
2214 struct pfioc_trans_e transe;
2215 int ret;
2216
2217 bzero(&trans, sizeof(trans));
2218 bzero(&transe, sizeof(transe));
2219
2220 transe.rs_num = PF_RULESET_ETH;
2221 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor))
2222 >= sizeof(transe.anchor))
2223 return (E2BIG);
2224
2225 trans.size = 1;
2226 trans.esize = sizeof(transe);
2227 trans.array = &transe;
2228
2229 ret = ioctl(dev, DIOCXBEGIN, &trans);
2230 if (ret != 0)
2231 return (errno);
2232 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2233 if (ret != 0)
2234 return (errno);
2235
2236 return (0);
2237 }
2238
2239 static int
_pfctl_get_limit(int dev,const int index,uint * limit)2240 _pfctl_get_limit(int dev, const int index, uint *limit)
2241 {
2242 struct pfioc_limit pl;
2243
2244 bzero(&pl, sizeof(pl));
2245 pl.index = index;
2246
2247 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1)
2248 return (errno);
2249
2250 *limit = pl.limit;
2251
2252 return (0);
2253 }
2254
2255 int
pfctl_set_syncookies(int dev,const struct pfctl_syncookies * s)2256 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s)
2257 {
2258 struct pfioc_nv nv;
2259 nvlist_t *nvl;
2260 int ret;
2261 uint state_limit;
2262 uint64_t lim, hi, lo;
2263
2264 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2265 if (ret != 0)
2266 return (ret);
2267
2268 lim = state_limit;
2269 hi = lim * s->highwater / 100;
2270 lo = lim * s->lowwater / 100;
2271
2272 if (lo == hi)
2273 hi++;
2274
2275 nvl = nvlist_create(0);
2276
2277 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER);
2278 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE);
2279 nvlist_add_number(nvl, "highwater", hi);
2280 nvlist_add_number(nvl, "lowwater", lo);
2281
2282 nv.data = nvlist_pack(nvl, &nv.len);
2283 nv.size = nv.len;
2284 nvlist_destroy(nvl);
2285 nvl = NULL;
2286
2287 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv);
2288
2289 free(nv.data);
2290 if (ret != 0)
2291 return (errno);
2292
2293 return (0);
2294 }
2295
2296 int
pfctl_get_syncookies(int dev,struct pfctl_syncookies * s)2297 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s)
2298 {
2299 nvlist_t *nvl;
2300 int ret;
2301 uint state_limit;
2302 bool enabled, adaptive;
2303
2304 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2305 if (ret != 0)
2306 return (ret);
2307
2308 bzero(s, sizeof(*s));
2309
2310 nvl = nvlist_create(0);
2311
2312 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) {
2313 ret = errno;
2314 goto out;
2315 }
2316
2317 enabled = nvlist_get_bool(nvl, "enabled");
2318 adaptive = nvlist_get_bool(nvl, "adaptive");
2319
2320 if (enabled) {
2321 if (adaptive)
2322 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE;
2323 else
2324 s->mode = PFCTL_SYNCOOKIES_ALWAYS;
2325 } else {
2326 s->mode = PFCTL_SYNCOOKIES_NEVER;
2327 }
2328
2329 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit;
2330 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit;
2331 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states");
2332
2333 out:
2334 nvlist_destroy(nvl);
2335 return (ret);
2336 }
2337
2338 int
pfctl_table_add_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * nadd,int flags)2339 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2340 *addr, int size, int *nadd, int flags)
2341 {
2342 struct pfioc_table io;
2343
2344 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2345 return (EINVAL);
2346 }
2347 bzero(&io, sizeof io);
2348 io.pfrio_flags = flags;
2349 io.pfrio_table = *tbl;
2350 io.pfrio_buffer = addr;
2351 io.pfrio_esize = sizeof(*addr);
2352 io.pfrio_size = size;
2353
2354 if (ioctl(dev, DIOCRADDADDRS, &io))
2355 return (errno);
2356 if (nadd != NULL)
2357 *nadd = io.pfrio_nadd;
2358 return (0);
2359 }
2360
2361 int
pfctl_table_del_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * ndel,int flags)2362 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2363 *addr, int size, int *ndel, int flags)
2364 {
2365 struct pfioc_table io;
2366
2367 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2368 return (EINVAL);
2369 }
2370 bzero(&io, sizeof io);
2371 io.pfrio_flags = flags;
2372 io.pfrio_table = *tbl;
2373 io.pfrio_buffer = addr;
2374 io.pfrio_esize = sizeof(*addr);
2375 io.pfrio_size = size;
2376
2377 if (ioctl(dev, DIOCRDELADDRS, &io))
2378 return (errno);
2379 if (ndel != NULL)
2380 *ndel = io.pfrio_ndel;
2381 return (0);
2382 }
2383
2384 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)2385 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2386 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags)
2387 {
2388 struct pfioc_table io;
2389
2390 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2391 return (EINVAL);
2392 }
2393 bzero(&io, sizeof io);
2394 io.pfrio_flags = flags;
2395 io.pfrio_table = *tbl;
2396 io.pfrio_buffer = addr;
2397 io.pfrio_esize = sizeof(*addr);
2398 io.pfrio_size = size;
2399 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0;
2400 if (ioctl(dev, DIOCRSETADDRS, &io))
2401 return (errno);
2402 if (nadd != NULL)
2403 *nadd = io.pfrio_nadd;
2404 if (ndel != NULL)
2405 *ndel = io.pfrio_ndel;
2406 if (nchange != NULL)
2407 *nchange = io.pfrio_nchange;
2408 if (size2 != NULL)
2409 *size2 = io.pfrio_size2;
2410 return (0);
2411 }
2412
pfctl_table_get_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int * size,int flags)2413 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr,
2414 int *size, int flags)
2415 {
2416 struct pfioc_table io;
2417
2418 if (tbl == NULL || size == NULL || *size < 0 ||
2419 (*size && addr == NULL)) {
2420 return (EINVAL);
2421 }
2422 bzero(&io, sizeof io);
2423 io.pfrio_flags = flags;
2424 io.pfrio_table = *tbl;
2425 io.pfrio_buffer = addr;
2426 io.pfrio_esize = sizeof(*addr);
2427 io.pfrio_size = *size;
2428 if (ioctl(dev, DIOCRGETADDRS, &io))
2429 return (errno);
2430 *size = io.pfrio_size;
2431 return (0);
2432 }
2433
2434 int
pfctl_set_statusif(struct pfctl_handle * h,const char * ifname)2435 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname)
2436 {
2437 struct snl_writer nw;
2438 struct snl_errmsg_data e = {};
2439 struct nlmsghdr *hdr;
2440 uint32_t seq_id;
2441 int family_id;
2442
2443 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2444 if (family_id == 0)
2445 return (ENOTSUP);
2446
2447 snl_init_writer(&h->ss, &nw);
2448 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF);
2449
2450 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname);
2451
2452 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2453 return (ENXIO);
2454
2455 seq_id = hdr->nlmsg_seq;
2456
2457 if (! snl_send_message(&h->ss, hdr))
2458 return (ENXIO);
2459
2460 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2461 }
2462
2463 return (e.error);
2464 }
2465
2466 #define _IN(_field) offsetof(struct genlmsghdr, _field)
2467 #define _OUT(_field) offsetof(struct pfctl_natlook, _field)
2468 static struct snl_attr_parser ap_natlook[] = {
2469 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr },
2470 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr },
2471 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 },
2472 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 },
2473 };
2474 #undef _IN
2475 #undef _OUT
2476 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, snl_f_p_empty, ap_natlook);
2477
2478 int
pfctl_natlook(struct pfctl_handle * h,const struct pfctl_natlook_key * k,struct pfctl_natlook * r)2479 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k,
2480 struct pfctl_natlook *r)
2481 {
2482 struct snl_writer nw;
2483 struct snl_errmsg_data e = {};
2484 struct nlmsghdr *hdr;
2485 uint32_t seq_id;
2486 int family_id;
2487
2488 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2489 if (family_id == 0)
2490 return (ENOTSUP);
2491
2492 snl_init_writer(&h->ss, &nw);
2493 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK);
2494 hdr->nlmsg_flags |= NLM_F_DUMP;
2495
2496 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af);
2497 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction);
2498 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto);
2499 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6);
2500 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6);
2501 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport);
2502 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport);
2503
2504 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2505 return (ENXIO);
2506
2507 seq_id = hdr->nlmsg_seq;
2508
2509 if (! snl_send_message(&h->ss, hdr))
2510 return (ENXIO);
2511
2512 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2513 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r))
2514 continue;
2515 }
2516
2517 return (e.error);
2518 }
2519
2520 int
pfctl_set_debug(struct pfctl_handle * h,uint32_t level)2521 pfctl_set_debug(struct pfctl_handle *h, uint32_t level)
2522 {
2523 struct snl_writer nw;
2524 struct snl_errmsg_data e = {};
2525 struct nlmsghdr *hdr;
2526 uint32_t seq_id;
2527 int family_id;
2528
2529 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2530 if (family_id == 0)
2531 return (ENOTSUP);
2532
2533 snl_init_writer(&h->ss, &nw);
2534 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG);
2535
2536 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level);
2537
2538 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2539 return (ENXIO);
2540
2541 seq_id = hdr->nlmsg_seq;
2542
2543 if (! snl_send_message(&h->ss, hdr))
2544 return (ENXIO);
2545
2546 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2547 }
2548
2549 return (e.error);
2550 }
2551
2552 int
pfctl_set_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t seconds)2553 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds)
2554 {
2555 struct snl_writer nw;
2556 struct snl_errmsg_data e = {};
2557 struct nlmsghdr *hdr;
2558 uint32_t seq_id;
2559 int family_id;
2560
2561 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2562 if (family_id == 0)
2563 return (ENOTSUP);
2564
2565 snl_init_writer(&h->ss, &nw);
2566 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT);
2567
2568 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2569 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds);
2570
2571 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2572 return (ENXIO);
2573
2574 seq_id = hdr->nlmsg_seq;
2575
2576 if (! snl_send_message(&h->ss, hdr))
2577 return (ENXIO);
2578
2579 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2580 }
2581
2582 return (e.error);
2583 }
2584
2585 struct pfctl_nl_timeout {
2586 uint32_t seconds;
2587 };
2588 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field)
2589 static struct snl_attr_parser ap_get_timeout[] = {
2590 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
2591 };
2592 #undef _OUT
2593 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, snl_f_p_empty, ap_get_timeout);
2594
2595 int
pfctl_get_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t * seconds)2596 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds)
2597 {
2598 struct snl_writer nw;
2599 struct pfctl_nl_timeout to = {};
2600 struct snl_errmsg_data e = {};
2601 struct nlmsghdr *hdr;
2602 uint32_t seq_id;
2603 int family_id;
2604
2605 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2606 if (family_id == 0)
2607 return (ENOTSUP);
2608
2609 snl_init_writer(&h->ss, &nw);
2610 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT);
2611 hdr->nlmsg_flags |= NLM_F_DUMP;
2612
2613 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2614
2615 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2616 return (ENXIO);
2617
2618 seq_id = hdr->nlmsg_seq;
2619
2620 if (! snl_send_message(&h->ss, hdr))
2621 return (ENXIO);
2622
2623 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2624 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to))
2625 continue;
2626 }
2627
2628 if (seconds != NULL)
2629 *seconds = to.seconds;
2630
2631 return (e.error);
2632 }
2633
2634 int
pfctl_set_limit(struct pfctl_handle * h,const int index,const uint limit)2635 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit)
2636 {
2637 struct snl_writer nw;
2638 struct snl_errmsg_data e = {};
2639 struct nlmsghdr *hdr;
2640 uint32_t seq_id;
2641 int family_id;
2642
2643 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2644 if (family_id == 0)
2645 return (ENOTSUP);
2646
2647 snl_init_writer(&h->ss, &nw);
2648 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT);
2649
2650 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2651 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit);
2652
2653 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2654 return (ENXIO);
2655
2656 seq_id = hdr->nlmsg_seq;
2657
2658 if (! snl_send_message(&h->ss, hdr))
2659 return (ENXIO);
2660
2661 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2662 }
2663
2664 return (e.error);
2665 }
2666
2667 struct pfctl_nl_limit {
2668 unsigned int limit;
2669 };
2670 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field)
2671 static struct snl_attr_parser ap_get_limit[] = {
2672 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
2673 };
2674 #undef _OUT
2675 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, snl_f_p_empty, ap_get_limit);
2676
2677 int
pfctl_get_limit(struct pfctl_handle * h,const int index,uint * limit)2678 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit)
2679 {
2680 struct snl_writer nw;
2681 struct pfctl_nl_limit li = {};
2682 struct snl_errmsg_data e = {};
2683 struct nlmsghdr *hdr;
2684 uint32_t seq_id;
2685 int family_id;
2686
2687 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2688 if (family_id == 0)
2689 return (ENOTSUP);
2690
2691 snl_init_writer(&h->ss, &nw);
2692 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT);
2693 hdr->nlmsg_flags |= NLM_F_DUMP;
2694
2695 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2696
2697 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2698 return (ENXIO);
2699
2700 seq_id = hdr->nlmsg_seq;
2701
2702 if (! snl_send_message(&h->ss, hdr))
2703 return (ENXIO);
2704
2705 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2706 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li))
2707 continue;
2708 }
2709
2710 if (limit != NULL)
2711 *limit = li.limit;
2712
2713 return (e.error);
2714 }
2715
2716 struct pfctl_nl_begin_addrs {
2717 uint32_t ticket;
2718 };
2719 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field)
2720 static struct snl_attr_parser ap_begin_addrs[] = {
2721 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2722 };
2723 #undef _OUT
2724 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_begin_addrs);
2725
2726 int
pfctl_begin_addrs(struct pfctl_handle * h,uint32_t * ticket)2727 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket)
2728 {
2729 struct snl_writer nw;
2730 struct pfctl_nl_begin_addrs attrs = {};
2731 struct snl_errmsg_data e = {};
2732 struct nlmsghdr *hdr;
2733 uint32_t seq_id;
2734 int family_id;
2735
2736 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2737 if (family_id == 0)
2738 return (ENOTSUP);
2739
2740 snl_init_writer(&h->ss, &nw);
2741 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS);
2742 hdr->nlmsg_flags |= NLM_F_DUMP;
2743
2744 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2745 return (ENXIO);
2746
2747 seq_id = hdr->nlmsg_seq;
2748
2749 if (! snl_send_message(&h->ss, hdr))
2750 return (ENXIO);
2751
2752 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2753 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs))
2754 continue;
2755 }
2756
2757 if (ticket != NULL)
2758 *ticket = attrs.ticket;
2759
2760 return (e.error);
2761 }
2762
2763 int
pfctl_add_addr(struct pfctl_handle * h,const struct pfioc_pooladdr * pa,int which)2764 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which)
2765 {
2766 struct snl_writer nw;
2767 struct snl_errmsg_data e = {};
2768 struct nlmsghdr *hdr;
2769 uint32_t seq_id;
2770 int family_id;
2771
2772 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2773 if (family_id == 0)
2774 return (ENOTSUP);
2775
2776 snl_init_writer(&h->ss, &nw);
2777 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR);
2778
2779 snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action);
2780 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket);
2781 snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr);
2782 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num);
2783 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action);
2784 snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last);
2785 snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af);
2786 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor);
2787 snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr);
2788 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
2789
2790 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2791 return (ENXIO);
2792
2793 seq_id = hdr->nlmsg_seq;
2794
2795 if (! snl_send_message(&h->ss, hdr))
2796 return (ENXIO);
2797
2798 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2799 }
2800
2801 return (e.error);
2802 }
2803
2804 static const struct snl_attr_parser ap_get_addrs[] = {
2805 { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 },
2806 };
2807 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addrs);
2808
2809 int
pfctl_get_addrs(struct pfctl_handle * h,uint32_t ticket,uint32_t r_num,uint8_t r_action,const char * anchor,uint32_t * nr,int which)2810 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2811 uint8_t r_action, const char *anchor, uint32_t *nr, int which)
2812 {
2813 struct snl_writer nw;
2814 struct snl_errmsg_data e = {};
2815 struct nlmsghdr *hdr;
2816 uint32_t seq_id;
2817 int family_id;
2818
2819 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2820 if (family_id == 0)
2821 return (ENOTSUP);
2822
2823 snl_init_writer(&h->ss, &nw);
2824 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS);
2825
2826 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2827 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2828 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2829 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2830 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
2831
2832 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2833 return (ENXIO);
2834
2835 seq_id = hdr->nlmsg_seq;
2836
2837 if (! snl_send_message(&h->ss, hdr))
2838 return (ENXIO);
2839
2840 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2841 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr))
2842 continue;
2843 }
2844
2845 return (e.error);
2846 }
2847
2848 #define _OUT(_field) offsetof(struct pf_pooladdr, _field)
2849 static const struct snl_attr_parser ap_pool_addr[] = {
2850 { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
2851 { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
2852 };
2853 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr);
2854 #undef _OUT
2855
2856 #define _OUT(_field) offsetof(struct pfioc_pooladdr, _field)
2857 static const struct snl_attr_parser ap_get_addr[] = {
2858 { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 },
2859 { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2860 { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
2861 { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 },
2862 { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 },
2863 { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 },
2864 { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
2865 { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string },
2866 { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested },
2867 };
2868 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addr);
2869 #undef _OUT
2870
2871 int
pfctl_get_addr(struct pfctl_handle * h,uint32_t ticket,uint32_t r_num,uint8_t r_action,const char * anchor,uint32_t nr,struct pfioc_pooladdr * pa,int which)2872 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2873 uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa,
2874 int which)
2875 {
2876 struct snl_writer nw;
2877 struct snl_errmsg_data e = {};
2878 struct nlmsghdr *hdr;
2879 uint32_t seq_id;
2880 int family_id;
2881
2882 family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2883 if (family_id == 0)
2884 return (ENOTSUP);
2885
2886 snl_init_writer(&h->ss, &nw);
2887 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR);
2888
2889 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2890 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2891 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2892 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2893 snl_add_msg_attr_u32(&nw, PF_AA_NR, nr);
2894 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
2895
2896 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2897 return (ENXIO);
2898
2899 seq_id = hdr->nlmsg_seq;
2900
2901 if (! snl_send_message(&h->ss, hdr))
2902 return (ENXIO);
2903
2904 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2905 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa))
2906 continue;
2907 }
2908
2909 return (e.error);
2910 }
2911
2912 #define _OUT(_field) offsetof(struct pfioc_ruleset, _field)
2913 static const struct snl_attr_parser ap_ruleset[] = {
2914 { .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
2915 { .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string },
2916 };
2917 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, snl_f_p_empty, ap_ruleset);
2918 #undef _OUT
2919
2920 int
pfctl_get_rulesets(struct pfctl_handle * h,const char * path,uint32_t * nr)2921 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr)
2922 {
2923 struct snl_writer nw;
2924 struct snl_errmsg_data e = {};
2925 struct nlmsghdr *hdr;
2926 struct pfioc_ruleset rs = {};
2927 uint32_t seq_id;
2928 int family_id;
2929
2930 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2931 if (family_id == 0)
2932 return (ENOTSUP);
2933
2934 snl_init_writer(&h->ss, &nw);
2935 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS);
2936
2937 snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
2938
2939 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2940 return (ENXIO);
2941
2942 seq_id = hdr->nlmsg_seq;
2943
2944 if (! snl_send_message(&h->ss, hdr))
2945 return (ENXIO);
2946
2947 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2948 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs))
2949 continue;
2950 }
2951
2952 *nr = rs.nr;
2953
2954 return (e.error);
2955 }
2956
2957 int
pfctl_get_ruleset(struct pfctl_handle * h,const char * path,uint32_t nr,struct pfioc_ruleset * rs)2958 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs)
2959 {
2960 struct snl_writer nw;
2961 struct snl_errmsg_data e = {};
2962 struct nlmsghdr *hdr;
2963 uint32_t seq_id;
2964 int family_id;
2965
2966 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2967 if (family_id == 0)
2968 return (ENOTSUP);
2969
2970 snl_init_writer(&h->ss, &nw);
2971 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET);
2972
2973 snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
2974 snl_add_msg_attr_u32(&nw, PF_RS_NR, nr);
2975
2976 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2977 return (ENXIO);
2978
2979 seq_id = hdr->nlmsg_seq;
2980
2981 if (! snl_send_message(&h->ss, hdr))
2982 return (ENXIO);
2983
2984 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2985 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs))
2986 continue;
2987 }
2988
2989 return (e.error);
2990 }
2991
2992 #define _OUT(_field) offsetof(struct pfctl_threshold, _field)
2993 static const struct snl_attr_parser ap_pfctl_threshold[] = {
2994 { .type = PF_TH_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
2995 { .type = PF_TH_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
2996 { .type = PF_TH_COUNT, .off = _OUT(count), .cb = snl_attr_get_uint32 },
2997 { .type = PF_TH_LAST, .off = _OUT(last), .cb = snl_attr_get_uint32 },
2998 };
2999 SNL_DECLARE_ATTR_PARSER(pfctl_threshold_parser, ap_pfctl_threshold);
3000 #undef _OUT
3001
3002 #define _OUT(_field) offsetof(struct pfctl_src_node, _field)
3003 static struct snl_attr_parser ap_srcnode[] = {
3004 { .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr },
3005 { .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr },
3006 { .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
3007 { .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
3008 { .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
3009 { .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
3010 { .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
3011 { .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
3012 { .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 },
3013 { .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
3014 { .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 },
3015 { .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 },
3016 { .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 },
3017 { .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested },
3018 { .type = PF_SN_NAF, .off = _OUT(naf), .cb = snl_attr_get_uint8 },
3019 };
3020 #undef _OUT
3021 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, snl_f_p_empty, ap_srcnode);
3022
3023 int
pfctl_get_srcnodes(struct pfctl_handle * h,pfctl_get_srcnode_fn fn,void * arg)3024 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg)
3025 {
3026 struct snl_writer nw;
3027 struct pfctl_src_node sn;
3028 struct snl_errmsg_data e = {};
3029 struct nlmsghdr *hdr;
3030 uint32_t seq_id;
3031 int family_id;
3032 int ret;
3033
3034 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3035 if (family_id == 0)
3036 return (ENOTSUP);
3037
3038 snl_init_writer(&h->ss, &nw);
3039 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES);
3040
3041 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3042 return (ENXIO);
3043
3044 seq_id = hdr->nlmsg_seq;
3045
3046 if (!snl_send_message(&h->ss, hdr))
3047 return (ENXIO);
3048
3049 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3050 if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn))
3051 continue;
3052
3053 ret = fn(&sn, arg);
3054 if (ret != 0)
3055 return (ret);
3056 }
3057
3058 return (e.error);
3059 }
3060
3061 static struct snl_attr_parser ap_ndel[] = {
3062 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 },
3063 };
3064 SNL_DECLARE_PARSER(ndel_parser, struct genlmsghdr, snl_f_p_empty, ap_ndel);
3065
3066 int
pfctl_clear_tables(struct pfctl_handle * h,struct pfr_table * filter,int * ndel,int flags)3067 pfctl_clear_tables(struct pfctl_handle *h, struct pfr_table *filter,
3068 int *ndel, int flags)
3069 {
3070 struct snl_writer nw;
3071 struct snl_errmsg_data e = {};
3072 struct nlmsghdr *hdr;
3073 uint32_t seq_id;
3074 int family_id;
3075
3076 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3077 if (family_id == 0)
3078 return (ENOTSUP);
3079
3080 snl_init_writer(&h->ss, &nw);
3081 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLEAR_TABLES);
3082
3083 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor);
3084 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name);
3085 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags);
3086 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3087
3088 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3089 return (ENXIO);
3090
3091 seq_id = hdr->nlmsg_seq;
3092
3093 if (!snl_send_message(&h->ss, hdr))
3094 return (ENXIO);
3095
3096 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3097 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel))
3098 continue;
3099 }
3100
3101 return (e.error);
3102 }
3103