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
80 h->fd = open(pf_device, O_RDWR);
81 if (h->fd < 0)
82 goto error;
83
84 if (!snl_init(&h->ss, NETLINK_GENERIC))
85 goto error;
86
87 return (h);
88 error:
89 if (h->fd != -1)
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 { .type = PF_GS_NCOUNTERS, .off = _OUT(ncounters), .cb = snl_attr_get_counters },
395 { .type = PF_GS_FRAGMENTS, .off = _OUT(fragments), .cb = snl_attr_get_uint64 },
396 };
397 SNL_DECLARE_PARSER(getstatus_parser, struct genlmsghdr, snl_f_p_empty, ap_getstatus);
398 #undef _OUT
399
400 struct pfctl_status *
pfctl_get_status_h(struct pfctl_handle * h)401 pfctl_get_status_h(struct pfctl_handle *h)
402 {
403 struct pfctl_status *status;
404 struct snl_errmsg_data e = {};
405 struct nlmsghdr *hdr;
406 struct snl_writer nw;
407 uint32_t seq_id;
408 int family_id;
409
410 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
411 if (family_id == 0)
412 return (NULL);
413
414 snl_init_writer(&h->ss, &nw);
415 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_STATUS);
416 hdr->nlmsg_flags |= NLM_F_DUMP;
417
418 hdr = snl_finalize_msg(&nw);
419 if (hdr == NULL) {
420 return (NULL);
421 }
422
423 seq_id = hdr->nlmsg_seq;
424 if (! snl_send_message(&h->ss, hdr))
425 return (NULL);
426
427 status = calloc(1, sizeof(*status));
428 if (status == NULL)
429 return (NULL);
430 TAILQ_INIT(&status->counters);
431 TAILQ_INIT(&status->lcounters);
432 TAILQ_INIT(&status->fcounters);
433 TAILQ_INIT(&status->scounters);
434 TAILQ_INIT(&status->ncounters);
435
436 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
437 if (! snl_parse_nlmsg(&h->ss, hdr, &getstatus_parser, status))
438 continue;
439 }
440
441 return (status);
442 }
443
444 struct pfctl_status *
pfctl_get_status(int dev)445 pfctl_get_status(int dev)
446 {
447 struct pfctl_status *status;
448 nvlist_t *nvl;
449 size_t len;
450 const void *chksum;
451
452 status = calloc(1, sizeof(*status));
453 if (status == NULL)
454 return (NULL);
455
456 nvl = nvlist_create(0);
457
458 if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) {
459 nvlist_destroy(nvl);
460 free(status);
461 return (NULL);
462 }
463
464 status->running = nvlist_get_bool(nvl, "running");
465 status->since = nvlist_get_number(nvl, "since");
466 status->debug = nvlist_get_number(nvl, "debug");
467 status->hostid = ntohl(nvlist_get_number(nvl, "hostid"));
468 status->states = nvlist_get_number(nvl, "states");
469 status->src_nodes = nvlist_get_number(nvl, "src_nodes");
470 status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active");
471 status->reass = nvlist_get_number(nvl, "reass");
472
473 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"),
474 IFNAMSIZ);
475 chksum = nvlist_get_binary(nvl, "chksum", &len);
476 assert(len == PF_MD5_DIGEST_LENGTH);
477 memcpy(status->pf_chksum, chksum, len);
478
479 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"),
480 &status->counters);
481 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"),
482 &status->lcounters);
483 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"),
484 &status->fcounters);
485 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"),
486 &status->scounters);
487
488 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2,
489 (uint64_t *)status->pcounters, NULL);
490 pf_nvuint_64_array(nvl, "bcounters", 2 * 2,
491 (uint64_t *)status->bcounters, NULL);
492
493 nvlist_destroy(nvl);
494
495 return (status);
496 }
497 int
pfctl_clear_status(struct pfctl_handle * h)498 pfctl_clear_status(struct pfctl_handle *h)
499 {
500 return (pfctl_do_netlink_cmd(h, PFNL_CMD_CLEAR_STATUS));
501 }
502
503 static uint64_t
_pfctl_status_counter(struct pfctl_status_counters * counters,uint64_t id)504 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id)
505 {
506 struct pfctl_status_counter *c;
507
508 TAILQ_FOREACH(c, counters, entry) {
509 if (c->id == id)
510 return (c->counter);
511 }
512
513 return (0);
514 }
515
516 uint64_t
pfctl_status_counter(struct pfctl_status * status,int id)517 pfctl_status_counter(struct pfctl_status *status, int id)
518 {
519 return (_pfctl_status_counter(&status->counters, id));
520 }
521
522 uint64_t
pfctl_status_lcounter(struct pfctl_status * status,int id)523 pfctl_status_lcounter(struct pfctl_status *status, int id)
524 {
525 return (_pfctl_status_counter(&status->lcounters, id));
526 }
527
528 uint64_t
pfctl_status_fcounter(struct pfctl_status * status,int id)529 pfctl_status_fcounter(struct pfctl_status *status, int id)
530 {
531 return (_pfctl_status_counter(&status->fcounters, id));
532 }
533
534 uint64_t
pfctl_status_scounter(struct pfctl_status * status,int id)535 pfctl_status_scounter(struct pfctl_status *status, int id)
536 {
537 return (_pfctl_status_counter(&status->scounters, id));
538 }
539
540 void
pfctl_free_status(struct pfctl_status * status)541 pfctl_free_status(struct pfctl_status *status)
542 {
543 struct pfctl_status_counter *c, *tmp;
544
545 if (status == NULL)
546 return;
547
548 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) {
549 free(c->name);
550 free(c);
551 }
552 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) {
553 free(c->name);
554 free(c);
555 }
556 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) {
557 free(c->name);
558 free(c);
559 }
560 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) {
561 free(c->name);
562 free(c);
563 }
564 TAILQ_FOREACH_SAFE(c, &status->ncounters, entry, tmp) {
565 free(c->name);
566 free(c);
567 }
568
569 free(status);
570 }
571
572 static void
pfctl_nv_add_addr(nvlist_t * nvparent,const char * name,const struct pf_addr * addr)573 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name,
574 const struct pf_addr *addr)
575 {
576 nvlist_t *nvl = nvlist_create(0);
577
578 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr));
579
580 nvlist_add_nvlist(nvparent, name, nvl);
581 nvlist_destroy(nvl);
582 }
583
584 static void
pf_nvaddr_to_addr(const nvlist_t * nvl,struct pf_addr * addr)585 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr)
586 {
587 size_t len;
588 const void *data;
589
590 data = nvlist_get_binary(nvl, "addr", &len);
591 assert(len == sizeof(struct pf_addr));
592 memcpy(addr, data, len);
593 }
594
595 static void
pfctl_nv_add_addr_wrap(nvlist_t * nvparent,const char * name,const struct pf_addr_wrap * addr)596 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name,
597 const struct pf_addr_wrap *addr)
598 {
599 nvlist_t *nvl = nvlist_create(0);
600
601 nvlist_add_number(nvl, "type", addr->type);
602 nvlist_add_number(nvl, "iflags", addr->iflags);
603 if (addr->type == PF_ADDR_DYNIFTL)
604 nvlist_add_string(nvl, "ifname", addr->v.ifname);
605 if (addr->type == PF_ADDR_TABLE)
606 nvlist_add_string(nvl, "tblname", addr->v.tblname);
607 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr);
608 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask);
609
610 nvlist_add_nvlist(nvparent, name, nvl);
611 nvlist_destroy(nvl);
612 }
613
614 static void
pf_nvaddr_wrap_to_addr_wrap(const nvlist_t * nvl,struct pf_addr_wrap * addr)615 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr)
616 {
617 bzero(addr, sizeof(*addr));
618
619 addr->type = nvlist_get_number(nvl, "type");
620 addr->iflags = nvlist_get_number(nvl, "iflags");
621 if (addr->type == PF_ADDR_DYNIFTL) {
622 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"),
623 IFNAMSIZ);
624 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt");
625 }
626 if (addr->type == PF_ADDR_TABLE) {
627 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"),
628 PF_TABLE_NAME_SIZE);
629 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt");
630 }
631
632 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr);
633 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask);
634 }
635
636 static void
pfctl_nv_add_rule_addr(nvlist_t * nvparent,const char * name,const struct pf_rule_addr * addr)637 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name,
638 const struct pf_rule_addr *addr)
639 {
640 uint64_t ports[2];
641 nvlist_t *nvl = nvlist_create(0);
642
643 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr);
644 ports[0] = addr->port[0];
645 ports[1] = addr->port[1];
646 nvlist_add_number_array(nvl, "port", ports, 2);
647 nvlist_add_number(nvl, "neg", addr->neg);
648 nvlist_add_number(nvl, "port_op", addr->port_op);
649
650 nvlist_add_nvlist(nvparent, name, nvl);
651 nvlist_destroy(nvl);
652 }
653
654 static void
pf_nvrule_addr_to_rule_addr(const nvlist_t * nvl,struct pf_rule_addr * addr)655 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr)
656 {
657 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr);
658
659 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL);
660 addr->neg = nvlist_get_number(nvl, "neg");
661 addr->port_op = nvlist_get_number(nvl, "port_op");
662 }
663
664 static void
pf_nvmape_to_mape(const nvlist_t * nvl,struct pf_mape_portset * mape)665 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape)
666 {
667 mape->offset = nvlist_get_number(nvl, "offset");
668 mape->psidlen = nvlist_get_number(nvl, "psidlen");
669 mape->psid = nvlist_get_number(nvl, "psid");
670 }
671
672 static void
pf_nvpool_to_pool(const nvlist_t * nvl,struct pfctl_pool * pool)673 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool)
674 {
675 size_t len;
676 const void *data;
677
678 data = nvlist_get_binary(nvl, "key", &len);
679 assert(len == sizeof(pool->key));
680 memcpy(&pool->key, data, len);
681
682 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter);
683
684 pool->tblidx = nvlist_get_number(nvl, "tblidx");
685 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL);
686 pool->opts = nvlist_get_number(nvl, "opts");
687
688 if (nvlist_exists_nvlist(nvl, "mape"))
689 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape);
690 }
691
692 static void
pf_nvrule_uid_to_rule_uid(const nvlist_t * nvl,struct pf_rule_uid * uid)693 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid)
694 {
695 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL);
696 uid->op = nvlist_get_number(nvl, "op");
697 }
698
699 static void
pf_nvdivert_to_divert(const nvlist_t * nvl,struct pfctl_rule * rule)700 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule)
701 {
702 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr);
703 rule->divert.port = nvlist_get_number(nvl, "port");
704 }
705
706 static void
pf_nvrule_to_rule(const nvlist_t * nvl,struct pfctl_rule * rule)707 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule)
708 {
709 const uint64_t *skip;
710 const char *const *labels;
711 size_t skipcount, labelcount;
712
713 rule->nr = nvlist_get_number(nvl, "nr");
714
715 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src);
716 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst);
717
718 skip = nvlist_get_number_array(nvl, "skip", &skipcount);
719 assert(skip);
720 assert(skipcount == PF_SKIP_COUNT);
721 for (int i = 0; i < PF_SKIP_COUNT; i++)
722 rule->skip[i].nr = skip[i];
723
724 labels = nvlist_get_string_array(nvl, "labels", &labelcount);
725 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
726 for (size_t i = 0; i < labelcount; i++)
727 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
728 rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
729 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
730 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
731 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE);
732 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
733 PF_TAG_NAME_SIZE);
734 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
735 PF_TAG_NAME_SIZE);
736
737 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"),
738 PF_TABLE_NAME_SIZE);
739
740 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rdr);
741
742 rule->evaluations = nvlist_get_number(nvl, "evaluations");
743 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL);
744 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL);
745
746 if (nvlist_exists_number(nvl, "timestamp")) {
747 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
748 }
749
750 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint");
751
752 rule->rtableid = nvlist_get_number(nvl, "rtableid");
753 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL);
754 rule->max_states = nvlist_get_number(nvl, "max_states");
755 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes");
756 rule->max_src_states = nvlist_get_number(nvl, "max_src_states");
757 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn");
758 rule->max_src_conn_rate.limit =
759 nvlist_get_number(nvl, "max_src_conn_rate.limit");
760 rule->max_src_conn_rate.seconds =
761 nvlist_get_number(nvl, "max_src_conn_rate.seconds");
762 rule->qid = nvlist_get_number(nvl, "qid");
763 rule->pqid = nvlist_get_number(nvl, "pqid");
764 rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
765 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe");
766 rule->free_flags = nvlist_get_number(nvl, "dnflags");
767 rule->prob = nvlist_get_number(nvl, "prob");
768 rule->cuid = nvlist_get_number(nvl, "cuid");
769 rule->cpid = nvlist_get_number(nvl, "cpid");
770
771 rule->return_icmp = nvlist_get_number(nvl, "return_icmp");
772 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6");
773 rule->max_mss = nvlist_get_number(nvl, "max_mss");
774 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags");
775
776 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid);
777 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"),
778 (struct pf_rule_uid *)&rule->gid);
779
780 rule->rule_flag = nvlist_get_number(nvl, "rule_flag");
781 rule->action = nvlist_get_number(nvl, "action");
782 rule->direction = nvlist_get_number(nvl, "direction");
783 rule->log = nvlist_get_number(nvl, "log");
784 rule->logif = nvlist_get_number(nvl, "logif");
785 rule->quick = nvlist_get_number(nvl, "quick");
786 rule->ifnot = nvlist_get_number(nvl, "ifnot");
787 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not");
788 rule->natpass = nvlist_get_number(nvl, "natpass");
789
790 rule->keep_state = nvlist_get_number(nvl, "keep_state");
791 rule->af = nvlist_get_number(nvl, "af");
792 rule->proto = nvlist_get_number(nvl, "proto");
793 rule->type = nvlist_get_number(nvl, "type");
794 rule->code = nvlist_get_number(nvl, "code");
795 rule->flags = nvlist_get_number(nvl, "flags");
796 rule->flagset = nvlist_get_number(nvl, "flagset");
797 rule->min_ttl = nvlist_get_number(nvl, "min_ttl");
798 rule->allow_opts = nvlist_get_number(nvl, "allow_opts");
799 rule->rt = nvlist_get_number(nvl, "rt");
800 rule->return_ttl = nvlist_get_number(nvl, "return_ttl");
801 rule->tos = nvlist_get_number(nvl, "tos");
802 rule->set_tos = nvlist_get_number(nvl, "set_tos");
803 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
804 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
805
806 rule->flush = nvlist_get_number(nvl, "flush");
807 rule->prio = nvlist_get_number(nvl, "prio");
808 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL);
809
810 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule);
811
812 rule->states_cur = nvlist_get_number(nvl, "states_cur");
813 rule->states_tot = nvlist_get_number(nvl, "states_tot");
814 rule->src_nodes = nvlist_get_number(nvl, "src_nodes");
815 }
816
817 static void
pfctl_nveth_addr_to_eth_addr(const nvlist_t * nvl,struct pfctl_eth_addr * addr)818 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr)
819 {
820 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 };
821 size_t len;
822 const void *data;
823
824 data = nvlist_get_binary(nvl, "addr", &len);
825 assert(len == sizeof(addr->addr));
826 memcpy(addr->addr, data, sizeof(addr->addr));
827
828 data = nvlist_get_binary(nvl, "mask", &len);
829 assert(len == sizeof(addr->mask));
830 memcpy(addr->mask, data, sizeof(addr->mask));
831
832 addr->neg = nvlist_get_bool(nvl, "neg");
833
834 /* To make checks for 'is this address set?' easier. */
835 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0;
836 }
837
838 static nvlist_t *
pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr * addr)839 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr)
840 {
841 nvlist_t *nvl;
842
843 nvl = nvlist_create(0);
844 if (nvl == NULL)
845 return (NULL);
846
847 nvlist_add_bool(nvl, "neg", addr->neg);
848 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN);
849 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN);
850
851 return (nvl);
852 }
853
854 static void
pfctl_nveth_rule_to_eth_rule(const nvlist_t * nvl,struct pfctl_eth_rule * rule)855 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule)
856 {
857 const char *const *labels;
858 size_t labelcount, i;
859
860 rule->nr = nvlist_get_number(nvl, "nr");
861 rule->quick = nvlist_get_bool(nvl, "quick");
862 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
863 rule->ifnot = nvlist_get_bool(nvl, "ifnot");
864 rule->direction = nvlist_get_number(nvl, "direction");
865 rule->proto = nvlist_get_number(nvl, "proto");
866 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
867 PF_TAG_NAME_SIZE);
868 rule->match_tag = nvlist_get_number(nvl, "match_tag");
869 rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not");
870
871 labels = nvlist_get_string_array(nvl, "labels", &labelcount);
872 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
873 for (i = 0; i < labelcount; i++)
874 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
875 rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
876
877 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"),
878 &rule->src);
879 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"),
880 &rule->dst);
881
882 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"),
883 &rule->ipsrc);
884 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"),
885 &rule->ipdst);
886
887 rule->evaluations = nvlist_get_number(nvl, "evaluations");
888 rule->packets[0] = nvlist_get_number(nvl, "packets-in");
889 rule->packets[1] = nvlist_get_number(nvl, "packets-out");
890 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in");
891 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out");
892
893 if (nvlist_exists_number(nvl, "timestamp")) {
894 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
895 }
896
897 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
898 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
899 PF_TAG_NAME_SIZE);
900
901 rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
902 rule->dnflags = nvlist_get_number(nvl, "dnflags");
903
904 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
905 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
906
907 strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"),
908 IFNAMSIZ);
909
910 rule->action = nvlist_get_number(nvl, "action");
911 }
912
913 int
pfctl_get_eth_rulesets_info(int dev,struct pfctl_eth_rulesets_info * ri,const char * path)914 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri,
915 const char *path)
916 {
917 nvlist_t *nvl;
918 int ret;
919
920 bzero(ri, sizeof(*ri));
921
922 nvl = nvlist_create(0);
923 nvlist_add_string(nvl, "path", path);
924
925 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0)
926 goto out;
927
928 ri->nr = nvlist_get_number(nvl, "nr");
929
930 out:
931 nvlist_destroy(nvl);
932 return (ret);
933 }
934
935 int
pfctl_get_eth_ruleset(int dev,const char * path,int nr,struct pfctl_eth_ruleset_info * ri)936 pfctl_get_eth_ruleset(int dev, const char *path, int nr,
937 struct pfctl_eth_ruleset_info *ri)
938 {
939 nvlist_t *nvl;
940 int ret;
941
942 bzero(ri, sizeof(*ri));
943
944 nvl = nvlist_create(0);
945 nvlist_add_string(nvl, "path", path);
946 nvlist_add_number(nvl, "nr", nr);
947
948 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0)
949 goto out;
950
951 ri->nr = nvlist_get_number(nvl, "nr");
952 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN);
953 strlcpy(ri->name, nvlist_get_string(nvl, "name"),
954 PF_ANCHOR_NAME_SIZE);
955
956 out:
957 nvlist_destroy(nvl);
958 return (ret);
959 }
960
961 int
pfctl_get_eth_rules_info(int dev,struct pfctl_eth_rules_info * rules,const char * path)962 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules,
963 const char *path)
964 {
965 nvlist_t *nvl;
966 int ret;
967
968 bzero(rules, sizeof(*rules));
969
970 nvl = nvlist_create(0);
971 nvlist_add_string(nvl, "anchor", path);
972
973 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0)
974 goto out;
975
976 rules->nr = nvlist_get_number(nvl, "nr");
977 rules->ticket = nvlist_get_number(nvl, "ticket");
978
979 out:
980 nvlist_destroy(nvl);
981 return (ret);
982 }
983
984 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)985 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket,
986 const char *path, struct pfctl_eth_rule *rule, bool clear,
987 char *anchor_call)
988 {
989 nvlist_t *nvl;
990 int ret;
991
992 nvl = nvlist_create(0);
993
994 nvlist_add_string(nvl, "anchor", path);
995 nvlist_add_number(nvl, "ticket", ticket);
996 nvlist_add_number(nvl, "nr", nr);
997 nvlist_add_bool(nvl, "clear", clear);
998
999 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0)
1000 goto out;
1001
1002 pfctl_nveth_rule_to_eth_rule(nvl, rule);
1003
1004 if (anchor_call)
1005 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1006 MAXPATHLEN);
1007
1008 out:
1009 nvlist_destroy(nvl);
1010 return (ret);
1011 }
1012
1013 int
pfctl_add_eth_rule(int dev,const struct pfctl_eth_rule * r,const char * anchor,const char * anchor_call,uint32_t ticket)1014 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor,
1015 const char *anchor_call, uint32_t ticket)
1016 {
1017 struct pfioc_nv nv;
1018 nvlist_t *nvl, *addr;
1019 void *packed;
1020 int error = 0;
1021 size_t labelcount, size;
1022
1023 nvl = nvlist_create(0);
1024
1025 nvlist_add_number(nvl, "ticket", ticket);
1026 nvlist_add_string(nvl, "anchor", anchor);
1027 nvlist_add_string(nvl, "anchor_call", anchor_call);
1028
1029 nvlist_add_number(nvl, "nr", r->nr);
1030 nvlist_add_bool(nvl, "quick", r->quick);
1031 nvlist_add_string(nvl, "ifname", r->ifname);
1032 nvlist_add_bool(nvl, "ifnot", r->ifnot);
1033 nvlist_add_number(nvl, "direction", r->direction);
1034 nvlist_add_number(nvl, "proto", r->proto);
1035 nvlist_add_string(nvl, "match_tagname", r->match_tagname);
1036 nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not);
1037
1038 addr = pfctl_eth_addr_to_nveth_addr(&r->src);
1039 if (addr == NULL) {
1040 nvlist_destroy(nvl);
1041 return (ENOMEM);
1042 }
1043 nvlist_add_nvlist(nvl, "src", addr);
1044 nvlist_destroy(addr);
1045
1046 addr = pfctl_eth_addr_to_nveth_addr(&r->dst);
1047 if (addr == NULL) {
1048 nvlist_destroy(nvl);
1049 return (ENOMEM);
1050 }
1051 nvlist_add_nvlist(nvl, "dst", addr);
1052 nvlist_destroy(addr);
1053
1054 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc);
1055 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst);
1056
1057 labelcount = 0;
1058 while (labelcount < PF_RULE_MAX_LABEL_COUNT &&
1059 r->label[labelcount][0] != 0) {
1060 nvlist_append_string_array(nvl, "labels",
1061 r->label[labelcount]);
1062 labelcount++;
1063 }
1064 nvlist_add_number(nvl, "ridentifier", r->ridentifier);
1065
1066 nvlist_add_string(nvl, "qname", r->qname);
1067 nvlist_add_string(nvl, "tagname", r->tagname);
1068 nvlist_add_number(nvl, "dnpipe", r->dnpipe);
1069 nvlist_add_number(nvl, "dnflags", r->dnflags);
1070
1071 nvlist_add_string(nvl, "bridge_to", r->bridge_to);
1072
1073 nvlist_add_number(nvl, "action", r->action);
1074
1075 packed = nvlist_pack(nvl, &size);
1076 if (packed == NULL) {
1077 nvlist_destroy(nvl);
1078 return (ENOMEM);
1079 }
1080
1081 nv.len = size;
1082 nv.size = size;
1083 nv.data = packed;
1084
1085 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0)
1086 error = errno;
1087
1088 free(packed);
1089 nvlist_destroy(nvl);
1090
1091 return (error);
1092 }
1093
1094 static void
snl_add_msg_attr_addr_wrap(struct snl_writer * nw,uint32_t type,const struct pf_addr_wrap * addr)1095 snl_add_msg_attr_addr_wrap(struct snl_writer *nw, uint32_t type, const struct pf_addr_wrap *addr)
1096 {
1097 int off;
1098
1099 off = snl_add_msg_attr_nested(nw, type);
1100
1101 snl_add_msg_attr_ip6(nw, PF_AT_ADDR, &addr->v.a.addr.v6);
1102 snl_add_msg_attr_ip6(nw, PF_AT_MASK, &addr->v.a.mask.v6);
1103
1104 if (addr->type == PF_ADDR_DYNIFTL)
1105 snl_add_msg_attr_string(nw, PF_AT_IFNAME, addr->v.ifname);
1106 if (addr->type == PF_ADDR_TABLE)
1107 snl_add_msg_attr_string(nw, PF_AT_TABLENAME, addr->v.tblname);
1108 snl_add_msg_attr_u8(nw, PF_AT_TYPE, addr->type);
1109 snl_add_msg_attr_u8(nw, PF_AT_IFLAGS, addr->iflags);
1110
1111 snl_end_attr_nested(nw, off);
1112 }
1113
1114 static void
snl_add_msg_attr_pool_addr(struct snl_writer * nw,uint32_t type,const struct pf_pooladdr * pa)1115 snl_add_msg_attr_pool_addr(struct snl_writer *nw, uint32_t type, const struct pf_pooladdr *pa)
1116 {
1117 int off;
1118
1119 off = snl_add_msg_attr_nested(nw, type);
1120
1121 snl_add_msg_attr_string(nw, PF_PA_IFNAME, pa->ifname);
1122 snl_add_msg_attr_addr_wrap(nw, PF_PA_ADDR, &pa->addr);
1123
1124 snl_end_attr_nested(nw, off);
1125 }
1126
1127 static void
snl_add_msg_attr_rule_addr(struct snl_writer * nw,uint32_t type,const struct pf_rule_addr * addr)1128 snl_add_msg_attr_rule_addr(struct snl_writer *nw, uint32_t type, const struct pf_rule_addr *addr)
1129 {
1130 int off;
1131
1132 off = snl_add_msg_attr_nested(nw, type);
1133
1134 snl_add_msg_attr_addr_wrap(nw, PF_RAT_ADDR, &addr->addr);
1135 snl_add_msg_attr_u16(nw, PF_RAT_SRC_PORT, addr->port[0]);
1136 snl_add_msg_attr_u16(nw, PF_RAT_DST_PORT, addr->port[1]);
1137 snl_add_msg_attr_u8(nw, PF_RAT_NEG, addr->neg);
1138 snl_add_msg_attr_u8(nw, PF_RAT_OP, addr->port_op);
1139
1140 snl_end_attr_nested(nw, off);
1141 }
1142
1143 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])1144 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])
1145 {
1146 int off, i = 0;
1147
1148 off = snl_add_msg_attr_nested(nw, type);
1149
1150 while (i < PF_RULE_MAX_LABEL_COUNT &&
1151 labels[i][0] != 0) {
1152 snl_add_msg_attr_string(nw, PF_LT_LABEL, labels[i]);
1153 i++;
1154 }
1155
1156 snl_end_attr_nested(nw, off);
1157 }
1158
1159 static void
snl_add_msg_attr_mape(struct snl_writer * nw,uint32_t type,const struct pf_mape_portset * me)1160 snl_add_msg_attr_mape(struct snl_writer *nw, uint32_t type, const struct pf_mape_portset *me)
1161 {
1162 int off;
1163
1164 off = snl_add_msg_attr_nested(nw, type);
1165
1166 snl_add_msg_attr_u8(nw, PF_MET_OFFSET, me->offset);
1167 snl_add_msg_attr_u8(nw, PF_MET_PSID_LEN, me->psidlen);
1168 snl_add_msg_attr_u16(nw, PF_MET_PSID, me->psid);
1169
1170 snl_end_attr_nested(nw, off);
1171 }
1172
1173 static void
snl_add_msg_attr_rpool(struct snl_writer * nw,uint32_t type,const struct pfctl_pool * pool)1174 snl_add_msg_attr_rpool(struct snl_writer *nw, uint32_t type, const struct pfctl_pool *pool)
1175 {
1176 int off;
1177
1178 off = snl_add_msg_attr_nested(nw, type);
1179
1180 snl_add_msg_attr(nw, PF_PT_KEY, sizeof(pool->key), &pool->key);
1181 snl_add_msg_attr_ip6(nw, PF_PT_COUNTER, &pool->counter.v6);
1182 snl_add_msg_attr_u32(nw, PF_PT_TBLIDX, pool->tblidx);
1183 snl_add_msg_attr_u16(nw, PF_PT_PROXY_SRC_PORT, pool->proxy_port[0]);
1184 snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]);
1185 snl_add_msg_attr_u8(nw, PF_PT_OPTS, pool->opts);
1186 snl_add_msg_attr_mape(nw, PF_PT_MAPE, &pool->mape);
1187
1188 snl_end_attr_nested(nw, off);
1189 }
1190
1191 static void
snl_add_msg_attr_timeouts(struct snl_writer * nw,uint32_t type,const uint32_t * timeouts)1192 snl_add_msg_attr_timeouts(struct snl_writer *nw, uint32_t type, const uint32_t *timeouts)
1193 {
1194 int off;
1195
1196 off = snl_add_msg_attr_nested(nw, type);
1197
1198 for (int i = 0; i < PFTM_MAX; i++)
1199 snl_add_msg_attr_u32(nw, PF_TT_TIMEOUT, timeouts[i]);
1200
1201 snl_end_attr_nested(nw, off);
1202 }
1203
1204 static void
snl_add_msg_attr_uid(struct snl_writer * nw,uint32_t type,const struct pf_rule_uid * uid)1205 snl_add_msg_attr_uid(struct snl_writer *nw, uint32_t type, const struct pf_rule_uid *uid)
1206 {
1207 int off;
1208
1209 off = snl_add_msg_attr_nested(nw, type);
1210
1211 snl_add_msg_attr_u32(nw, PF_RUT_UID_LOW, uid->uid[0]);
1212 snl_add_msg_attr_u32(nw, PF_RUT_UID_HIGH, uid->uid[1]);
1213 snl_add_msg_attr_u8(nw, PF_RUT_OP, uid->op);
1214
1215 snl_end_attr_nested(nw, off);
1216 }
1217
1218 static void
snl_add_msg_attr_threshold(struct snl_writer * nw,uint32_t type,const struct pfctl_threshold * th)1219 snl_add_msg_attr_threshold(struct snl_writer *nw, uint32_t type, const struct pfctl_threshold *th)
1220 {
1221 int off;
1222
1223 off = snl_add_msg_attr_nested(nw, type);
1224
1225 snl_add_msg_attr_u32(nw, PF_TH_LIMIT, th->limit);
1226 snl_add_msg_attr_u32(nw, PF_TH_SECONDS, th->seconds);
1227
1228 snl_end_attr_nested(nw, off);
1229 }
1230
1231 static void
snl_add_msg_attr_pf_rule(struct snl_writer * nw,uint32_t type,const struct pfctl_rule * r)1232 snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r)
1233 {
1234 int off;
1235
1236 off = snl_add_msg_attr_nested(nw, type);
1237
1238 snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src);
1239 snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst);
1240 snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label);
1241 snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier);
1242 snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname);
1243 snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname);
1244 snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname);
1245 snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname);
1246 snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname);
1247 snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname);
1248 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RDR, &r->rdr);
1249 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_NAT, &r->nat);
1250 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RT, &r->route);
1251 snl_add_msg_attr_threshold(nw, PF_RT_PKTRATE, &r->pktrate);
1252 snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint);
1253 snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid);
1254 snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout);
1255 snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states);
1256 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes);
1257 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states);
1258 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN, r->max_src_conn);
1259 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit);
1260 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds);
1261 snl_add_msg_attr_u16(nw, PF_RT_MAX_PKT_SIZE, r->max_pkt_size);
1262
1263 snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe);
1264 snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe);
1265 snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags);
1266
1267 snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr);
1268 snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob);
1269 snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid);
1270 snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid);
1271
1272 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp);
1273 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6);
1274 snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss);
1275 snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags);
1276
1277 snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid);
1278 snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid);
1279 snl_add_msg_attr_string(nw, PF_RT_RCV_IFNAME, r->rcv_ifname);
1280 snl_add_msg_attr_bool(nw, PF_RT_RCV_IFNOT, r->rcvifnot);
1281
1282 snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag);
1283 snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action);
1284 snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction);
1285 snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log);
1286 snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif);
1287 snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick);
1288 snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot);
1289 snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not);
1290 snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass);
1291 snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state);
1292 snl_add_msg_attr_u8(nw, PF_RT_AF, r->af);
1293 snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto);
1294 snl_add_msg_attr_u16(nw, PF_RT_TYPE_2, r->type);
1295 snl_add_msg_attr_u16(nw, PF_RT_CODE_2, r->code);
1296 snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags);
1297 snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset);
1298 snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl);
1299 snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts);
1300 snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt);
1301 snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl);
1302 snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos);
1303 snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos);
1304
1305 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative);
1306 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard);
1307 snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush);
1308 snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio);
1309 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]);
1310 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]);
1311 snl_add_msg_attr_u8(nw, PF_RT_NAF, r->naf);
1312
1313 snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6);
1314 snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port);
1315
1316 snl_add_msg_attr_u8(nw, PF_RT_STATE_LIMIT, r->statelim.id);
1317 snl_add_msg_attr_u32(nw, PF_RT_STATE_LIMIT_ACTION, r->statelim.limiter_action);
1318 snl_add_msg_attr_u8(nw, PF_RT_SOURCE_LIMIT, r->sourcelim.id);
1319 snl_add_msg_attr_u32(nw, PF_RT_SOURCE_LIMIT_ACTION, r->sourcelim.limiter_action);
1320
1321 snl_end_attr_nested(nw, off);
1322 }
1323
1324 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)1325 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor,
1326 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket)
1327 {
1328 struct pfctl_handle *h;
1329 int ret;
1330
1331 h = pfctl_open(PF_DEVICE);
1332 if (h == NULL)
1333 return (ENODEV);
1334
1335 ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket);
1336
1337 pfctl_close(h);
1338
1339 return (ret);
1340 }
1341
1342 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)1343 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r,
1344 const char *anchor, const char *anchor_call, uint32_t ticket,
1345 uint32_t pool_ticket)
1346 {
1347 struct snl_writer nw;
1348 struct snl_errmsg_data e = {};
1349 struct nlmsghdr *hdr;
1350 uint32_t seq_id;
1351 int family_id;
1352
1353 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1354 if (family_id == 0)
1355 return (ENOTSUP);
1356
1357 snl_init_writer(&h->ss, &nw);
1358 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE);
1359 hdr->nlmsg_flags |= NLM_F_DUMP;
1360 snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket);
1361 snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket);
1362 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor);
1363 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call);
1364
1365 snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r);
1366
1367 if ((hdr = snl_finalize_msg(&nw)) == NULL)
1368 return (ENXIO);
1369
1370 seq_id = hdr->nlmsg_seq;
1371
1372 if (! snl_send_message(&h->ss, hdr))
1373 return (ENXIO);
1374
1375 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1376 }
1377
1378 return (e.error);
1379 }
1380
1381 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1382 #define _OUT(_field) offsetof(struct pfctl_rules_info, _field)
1383 static struct snl_attr_parser ap_getrules[] = {
1384 { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
1385 { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
1386 };
1387 #undef _IN
1388 #undef _OUT
1389 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, snl_f_p_empty, ap_getrules);
1390
1391 int
pfctl_get_rules_info_h(struct pfctl_handle * h,struct pfctl_rules_info * rules,uint32_t ruleset,const char * path)1392 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset,
1393 const char *path)
1394 {
1395 struct snl_errmsg_data e = {};
1396 struct nlmsghdr *hdr;
1397 struct snl_writer nw;
1398 uint32_t seq_id;
1399 int family_id;
1400
1401 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1402 if (family_id == 0)
1403 return (ENOTSUP);
1404
1405 snl_init_writer(&h->ss, &nw);
1406 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES);
1407 hdr->nlmsg_flags |= NLM_F_DUMP;
1408
1409 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path);
1410 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1411
1412 hdr = snl_finalize_msg(&nw);
1413 if (hdr == NULL)
1414 return (ENOMEM);
1415
1416 seq_id = hdr->nlmsg_seq;
1417 if (! snl_send_message(&h->ss, hdr))
1418 return (ENXIO);
1419
1420 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1421 if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules))
1422 continue;
1423 }
1424
1425 return (e.error);
1426 }
1427
1428 int
pfctl_get_rules_info(int dev __unused,struct pfctl_rules_info * rules,uint32_t ruleset,const char * path)1429 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset,
1430 const char *path)
1431 {
1432 struct pfctl_handle *h;
1433 int error;
1434
1435 h = pfctl_open(PF_DEVICE);
1436 if (h == NULL)
1437 return (ENOTSUP);
1438 error = pfctl_get_rules_info_h(h, rules, ruleset, path);
1439 pfctl_close(h);
1440
1441 return (error);
1442 }
1443
1444 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)1445 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor,
1446 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1447 {
1448 return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule,
1449 anchor_call, false));
1450 }
1451
1452 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)1453 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor,
1454 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1455 {
1456 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule,
1457 anchor_call, false));
1458 }
1459
1460 #define _OUT(_field) offsetof(struct pf_addr_wrap, _field)
1461 static const struct snl_attr_parser ap_addr_wrap[] = {
1462 { .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr },
1463 { .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr },
1464 { .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string },
1465 { .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1466 { .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 },
1467 { .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 },
1468 { .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 },
1469 { .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 },
1470 };
1471 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap);
1472 #undef _OUT
1473
1474 #define _OUT(_field) offsetof(struct pf_rule_addr, _field)
1475 static struct snl_attr_parser ap_rule_addr[] = {
1476 { .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
1477 { .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1478 { .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1479 { .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 },
1480 { .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 },
1481 };
1482 #undef _OUT
1483 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr);
1484
1485 struct snl_parsed_labels
1486 {
1487 char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
1488 uint32_t i;
1489 };
1490
1491 static bool
snl_attr_get_pf_rule_labels(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1492 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1493 const void *arg __unused, void *target)
1494 {
1495 struct snl_parsed_labels *l = (struct snl_parsed_labels *)target;
1496 bool ret;
1497
1498 if (l->i >= PF_RULE_MAX_LABEL_COUNT)
1499 return (false);
1500
1501 ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE,
1502 l->labels[l->i]);
1503 if (ret)
1504 l->i++;
1505
1506 return (ret);
1507 }
1508
1509 #define _OUT(_field) offsetof(struct nl_parsed_labels, _field)
1510 static const struct snl_attr_parser ap_labels[] = {
1511 { .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels },
1512 };
1513 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels);
1514 #undef _OUT
1515
1516 static bool
snl_attr_get_nested_pf_rule_labels(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1517 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1518 const void *arg __unused, void *target)
1519 {
1520 struct snl_parsed_labels parsed_labels = { };
1521 bool error;
1522
1523 /* Assumes target points to the beginning of the structure */
1524 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels);
1525 if (! error)
1526 return (error);
1527
1528 memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels));
1529
1530 return (true);
1531 }
1532
1533 #define _OUT(_field) offsetof(struct pf_mape_portset, _field)
1534 static const struct snl_attr_parser ap_mape_portset[] = {
1535 { .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 },
1536 { .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 },
1537 {. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 },
1538 };
1539 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset);
1540 #undef _OUT
1541
1542 #define _OUT(_field) offsetof(struct pfctl_pool, _field)
1543 static const struct snl_attr_parser ap_pool[] = {
1544 { .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes },
1545 { .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr },
1546 { .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 },
1547 { .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 },
1548 { .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 },
1549 { .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 },
1550 { .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested },
1551 };
1552 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool);
1553 #undef _OUT
1554
1555 struct nl_parsed_timeouts
1556 {
1557 uint32_t timeouts[PFTM_MAX];
1558 uint32_t i;
1559 };
1560
1561 static bool
snl_attr_get_pf_timeout(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1562 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla,
1563 const void *arg __unused, void *target)
1564 {
1565 struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target;
1566 bool ret;
1567
1568 if (t->i >= PFTM_MAX)
1569 return (false);
1570
1571 ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]);
1572 if (ret)
1573 t->i++;
1574
1575 return (ret);
1576 }
1577
1578 #define _OUT(_field) offsetof(struct nl_parsed_timeout, _field)
1579 static const struct snl_attr_parser ap_timeouts[] = {
1580 { .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout },
1581 };
1582 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts);
1583 #undef _OUT
1584
1585 static bool
snl_attr_get_nested_timeouts(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1586 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla,
1587 const void *arg __unused, void *target)
1588 {
1589 struct nl_parsed_timeouts parsed_timeouts = { };
1590 bool error;
1591
1592 /* Assumes target points to the beginning of the structure */
1593 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts);
1594 if (! error)
1595 return (error);
1596
1597 memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts));
1598
1599 return (true);
1600 }
1601
1602 #define _OUT(_field) offsetof(struct pf_rule_uid, _field)
1603 static const struct snl_attr_parser ap_rule_uid[] = {
1604 { .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 },
1605 { .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 },
1606 { .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 },
1607 };
1608 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid);
1609 #undef _OUT
1610
1611 #define _OUT(_field) offsetof(struct pfctl_threshold, _field)
1612 static const struct snl_attr_parser ap_pfctl_threshold[] = {
1613 { .type = PF_TH_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
1614 { .type = PF_TH_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
1615 { .type = PF_TH_COUNT, .off = _OUT(count), .cb = snl_attr_get_uint32 },
1616 };
1617 SNL_DECLARE_ATTR_PARSER(pfctl_threshold_parser, ap_pfctl_threshold);
1618 #undef _OUT
1619
1620 struct pfctl_nl_get_rule {
1621 struct pfctl_rule r;
1622 char anchor_call[MAXPATHLEN];
1623 };
1624 #define _OUT(_field) offsetof(struct pfctl_nl_get_rule, _field)
1625 static struct snl_attr_parser ap_getrule[] = {
1626 { .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1627 { .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1628 { .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 },
1629 { .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels },
1630 { .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string },
1631 { .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1632 { .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1633 { .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1634 { .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1635 { .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1636 { .type = PF_RT_RPOOL_RDR, .off = _OUT(r.rdr), .arg = &pool_parser, .cb = snl_attr_get_nested },
1637 { .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 },
1638 { .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 },
1639 { .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts },
1640 { .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 },
1641 { .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 },
1642 { .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 },
1643 { .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 },
1644 { .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 },
1645 { .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 },
1646 { .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 },
1647 { .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 },
1648 { .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 },
1649 { .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 },
1650 { .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 },
1651 {. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 },
1652 { .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 },
1653 { .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 },
1654 { .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 },
1655 { .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 },
1656 { .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1657 { .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1658 { .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 },
1659 { .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 },
1660 { .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 },
1661 { .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 },
1662 { .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 },
1663 { .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 },
1664 { .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 },
1665 { .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 },
1666 { .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 },
1667 { .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 },
1668 { .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 },
1669 { .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 },
1670 { .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 },
1671 { .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 },
1672 { .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 },
1673 { .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 },
1674 { .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 },
1675 { .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 },
1676 { .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 },
1677 { .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 },
1678 { .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 },
1679 { .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 },
1680 { .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 },
1681 { .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 },
1682 { .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 },
1683 { .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 },
1684 { .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 },
1685 { .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 },
1686 { .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr },
1687 { .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 },
1688 { .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 },
1689 { .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 },
1690 { .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 },
1691 { .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 },
1692 { .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 },
1693 { .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 },
1694 { .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 },
1695 { .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 },
1696 { .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 },
1697 { .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string },
1698 { .type = PF_RT_RCV_IFNAME, .off = _OUT(r.rcv_ifname), .arg = (void*)IFNAMSIZ, .cb = snl_attr_copy_string },
1699 { .type = PF_RT_MAX_SRC_CONN, .off = _OUT(r.max_src_conn), .cb = snl_attr_get_uint32 },
1700 { .type = PF_RT_RPOOL_NAT, .off = _OUT(r.nat), .arg = &pool_parser, .cb = snl_attr_get_nested },
1701 { .type = PF_RT_NAF, .off = _OUT(r.naf), .cb = snl_attr_get_uint8 },
1702 { .type = PF_RT_RPOOL_RT, .off = _OUT(r.route), .arg = &pool_parser, .cb = snl_attr_get_nested },
1703 { .type = PF_RT_RCV_IFNOT, .off = _OUT(r.rcvifnot),.cb = snl_attr_get_bool },
1704 { .type = PF_RT_SRC_NODES_LIMIT, .off = _OUT(r.src_nodes_type[PF_SN_LIMIT]), .cb = snl_attr_get_uint64 },
1705 { .type = PF_RT_SRC_NODES_NAT, .off = _OUT(r.src_nodes_type[PF_SN_NAT]), .cb = snl_attr_get_uint64 },
1706 { .type = PF_RT_SRC_NODES_ROUTE, .off = _OUT(r.src_nodes_type[PF_SN_ROUTE]), .cb = snl_attr_get_uint64 },
1707 { .type = PF_RT_PKTRATE, .off = _OUT(r.pktrate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested },
1708 { .type = PF_RT_MAX_PKT_SIZE, .off =_OUT(r.max_pkt_size), .cb = snl_attr_get_uint16 },
1709 { .type = PF_RT_TYPE_2, .off = _OUT(r.type), .cb = snl_attr_get_uint16 },
1710 { .type = PF_RT_CODE_2, .off = _OUT(r.code), .cb = snl_attr_get_uint16 },
1711 { .type = PF_RT_EXPTIME, .off = _OUT(r.exptime), .cb = snl_attr_get_time_t },
1712 { .type = PF_RT_STATE_LIMIT, .off = _OUT(r.statelim.id), .cb = snl_attr_get_uint8 },
1713 { .type = PF_RT_SOURCE_LIMIT, .off = _OUT(r.sourcelim.id), .cb = snl_attr_get_uint8 },
1714 { .type = PF_RT_STATE_LIMIT_ACTION, .off = _OUT(r.statelim.limiter_action), .cb = snl_attr_get_uint32 },
1715 { .type = PF_RT_SOURCE_LIMIT_ACTION, .off = _OUT(r.sourcelim.limiter_action), .cb = snl_attr_get_uint32 },
1716 };
1717 #undef _OUT
1718 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, snl_f_p_empty, ap_getrule);
1719
1720 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)1721 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket,
1722 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1723 char *anchor_call, bool clear)
1724 {
1725 struct pfctl_nl_get_rule attrs = {};
1726 struct snl_errmsg_data e = {};
1727 struct nlmsghdr *hdr;
1728 struct snl_writer nw;
1729 uint32_t seq_id;
1730 int family_id;
1731
1732 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1733 if (family_id == 0)
1734 return (ENOTSUP);
1735
1736 snl_init_writer(&h->ss, &nw);
1737 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE);
1738 hdr->nlmsg_flags |= NLM_F_DUMP;
1739
1740 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor);
1741 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1742 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr);
1743 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket);
1744 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear);
1745
1746 hdr = snl_finalize_msg(&nw);
1747 if (hdr == NULL)
1748 return (ENOMEM);
1749
1750 seq_id = hdr->nlmsg_seq;
1751 if (! snl_send_message(&h->ss, hdr))
1752 return (ENXIO);
1753
1754 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1755 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs))
1756 continue;
1757 }
1758
1759 memcpy(rule, &attrs.r, sizeof(attrs.r));
1760 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN);
1761
1762 return (e.error);
1763 }
1764
1765 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)1766 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket,
1767 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1768 char *anchor_call, bool clear)
1769 {
1770 nvlist_t *nvl;
1771 int ret;
1772
1773 nvl = nvlist_create(0);
1774 if (nvl == 0)
1775 return (ENOMEM);
1776
1777 nvlist_add_number(nvl, "nr", nr);
1778 nvlist_add_number(nvl, "ticket", ticket);
1779 nvlist_add_string(nvl, "anchor", anchor);
1780 nvlist_add_number(nvl, "ruleset", ruleset);
1781
1782 if (clear)
1783 nvlist_add_bool(nvl, "clear_counter", true);
1784
1785 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0)
1786 goto out;
1787
1788 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule);
1789
1790 if (anchor_call)
1791 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1792 MAXPATHLEN);
1793
1794 out:
1795 nvlist_destroy(nvl);
1796 return (ret);
1797 }
1798
1799 int
pfctl_set_keepcounters(int dev,bool keep)1800 pfctl_set_keepcounters(int dev, bool keep)
1801 {
1802 struct pfioc_nv nv;
1803 nvlist_t *nvl;
1804 int ret;
1805
1806 nvl = nvlist_create(0);
1807
1808 nvlist_add_bool(nvl, "keep_counters", keep);
1809
1810 nv.data = nvlist_pack(nvl, &nv.len);
1811 nv.size = nv.len;
1812
1813 nvlist_destroy(nvl);
1814
1815 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv);
1816
1817 free(nv.data);
1818 return (ret);
1819 }
1820
1821 struct pfctl_creator {
1822 uint32_t id;
1823 };
1824 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1825 #define _OUT(_field) offsetof(struct pfctl_creator, _field)
1826 static struct snl_attr_parser ap_creators[] = {
1827 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
1828 };
1829 #undef _IN
1830 #undef _OUT
1831 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, snl_f_p_empty, ap_creators);
1832
1833 static int
pfctl_get_creators_nl(struct snl_state * ss,uint32_t * creators,size_t * len)1834 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len)
1835 {
1836
1837 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1838 size_t i = 0;
1839
1840 struct nlmsghdr *hdr;
1841 struct snl_writer nw;
1842
1843 if (family_id == 0)
1844 return (ENOTSUP);
1845
1846 snl_init_writer(ss, &nw);
1847 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS);
1848 hdr->nlmsg_flags |= NLM_F_DUMP;
1849 hdr = snl_finalize_msg(&nw);
1850 if (hdr == NULL)
1851 return (ENOMEM);
1852 uint32_t seq_id = hdr->nlmsg_seq;
1853
1854 snl_send_message(ss, hdr);
1855
1856 struct snl_errmsg_data e = {};
1857 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1858 struct pfctl_creator c;
1859 bzero(&c, sizeof(c));
1860
1861 if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c))
1862 continue;
1863
1864 creators[i] = c.id;
1865 i++;
1866 if (i > *len)
1867 return (E2BIG);
1868 }
1869
1870 *len = i;
1871
1872 return (0);
1873 }
1874
1875 int
pfctl_get_creatorids(struct pfctl_handle * h,uint32_t * creators,size_t * len)1876 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len)
1877 {
1878 int error;
1879
1880 error = pfctl_get_creators_nl(&h->ss, creators, len);
1881
1882 return (error);
1883 }
1884
1885 static inline bool
snl_attr_get_pfaddr(struct snl_state * ss __unused,struct nlattr * nla,const void * arg __unused,void * target)1886 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla,
1887 const void *arg __unused, void *target)
1888 {
1889 memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla));
1890 return (true);
1891 }
1892
1893 static inline bool
snl_attr_store_ifname(struct snl_state * ss __unused,struct nlattr * nla,const void * arg __unused,void * target)1894 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla,
1895 const void *arg __unused, void *target)
1896 {
1897 size_t maxlen = NLA_DATA_LEN(nla);
1898
1899 if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) {
1900 strlcpy(target, (char *)NLA_DATA(nla), maxlen);
1901 return (true);
1902 }
1903 return (false);
1904 }
1905
1906 #define _OUT(_field) offsetof(struct pfctl_state_peer, _field)
1907 static const struct snl_attr_parser nla_p_speer[] = {
1908 { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 },
1909 { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 },
1910 { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 },
1911 { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 },
1912 { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 },
1913 };
1914 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer);
1915 #undef _OUT
1916
1917 #define _OUT(_field) offsetof(struct pfctl_state_key, _field)
1918 static const struct snl_attr_parser nla_p_skey[] = {
1919 { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr },
1920 { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr },
1921 { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1922 { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1923 { .type = PF_STK_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
1924 { .type = PF_STK_PROTO, .off = _OUT(proto), .cb = snl_attr_get_uint16 },
1925 };
1926 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey);
1927 #undef _OUT
1928
1929 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1930 #define _OUT(_field) offsetof(struct pfctl_state, _field)
1931 static struct snl_attr_parser ap_state[] = {
1932 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 },
1933 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 },
1934 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname },
1935 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname },
1936 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1937 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1938 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested },
1939 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested },
1940 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr },
1941 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
1942 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 },
1943 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 },
1944 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 },
1945 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 },
1946 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
1947 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
1948 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
1949 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
1950 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 },
1951 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 },
1952 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 },
1953 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 },
1954 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 },
1955 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 },
1956 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 },
1957 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 },
1958 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 },
1959 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 },
1960 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname },
1961 { .type = PF_ST_SRC_NODE_FLAGS, .off = _OUT(src_node_flags), .cb = snl_attr_get_uint8 },
1962 { .type = PF_ST_RT_AF, .off = _OUT(rt_af), .cb = snl_attr_get_uint8 },
1963 };
1964 #undef _IN
1965 #undef _OUT
1966 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, snl_f_p_empty, ap_state);
1967
1968 static const struct snl_hdr_parser *all_parsers[] = {
1969 &state_parser, &skey_parser, &speer_parser,
1970 &creator_parser, &getrules_parser
1971 };
1972
1973 int
pfctl_get_states_h(struct pfctl_handle * h,struct pfctl_state_filter * filter,pfctl_get_state_fn f,void * arg)1974 pfctl_get_states_h(struct pfctl_handle *h, struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
1975 {
1976 SNL_VERIFY_PARSERS(all_parsers);
1977 int family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1978 int ret;
1979
1980 struct nlmsghdr *hdr;
1981 struct snl_writer nw;
1982
1983 if (family_id == 0)
1984 return (ENOTSUP);
1985
1986 snl_init_writer(&h->ss, &nw);
1987 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES);
1988 hdr->nlmsg_flags |= NLM_F_DUMP;
1989 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname);
1990 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto);
1991 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af);
1992 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6);
1993 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6);
1994
1995 hdr = snl_finalize_msg(&nw);
1996 if (hdr == NULL)
1997 return (ENOMEM);
1998
1999 uint32_t seq_id = hdr->nlmsg_seq;
2000
2001 snl_send_message(&h->ss, hdr);
2002
2003 struct snl_errmsg_data e = {};
2004 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2005 struct pfctl_state s;
2006 bzero(&s, sizeof(s));
2007 if (!snl_parse_nlmsg(&h->ss, hdr, &state_parser, &s))
2008 continue;
2009
2010 ret = f(&s, arg);
2011 if (ret != 0)
2012 return (ret);
2013 }
2014
2015 return (0);
2016 }
2017
2018 int
pfctl_get_states_iter(pfctl_get_state_fn f,void * arg)2019 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg)
2020 {
2021 struct pfctl_state_filter filter = {};
2022 return (pfctl_get_filtered_states_iter(&filter, f, arg));
2023 }
2024
2025 int
pfctl_get_filtered_states_iter(struct pfctl_state_filter * filter,pfctl_get_state_fn f,void * arg)2026 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
2027 {
2028 struct pfctl_handle h = {};
2029 int error;
2030
2031 snl_init(&h.ss, NETLINK_GENERIC);
2032 error = pfctl_get_states_h(&h, filter, f, arg);
2033 snl_free(&h.ss);
2034
2035 return (error);
2036 }
2037
2038 static int
pfctl_append_states(struct pfctl_state * s,void * arg)2039 pfctl_append_states(struct pfctl_state *s, void *arg)
2040 {
2041 struct pfctl_state *new;
2042 struct pfctl_states *states = (struct pfctl_states *)arg;
2043
2044 new = malloc(sizeof(*s));
2045 if (new == NULL)
2046 return (ENOMEM);
2047
2048 memcpy(new, s, sizeof(*s));
2049
2050 TAILQ_INSERT_TAIL(&states->states, new, entry);
2051
2052 return (0);
2053 }
2054
2055 int
pfctl_get_states(int dev __unused,struct pfctl_states * states)2056 pfctl_get_states(int dev __unused, struct pfctl_states *states)
2057 {
2058 int ret;
2059
2060 bzero(states, sizeof(*states));
2061 TAILQ_INIT(&states->states);
2062
2063 ret = pfctl_get_states_iter(pfctl_append_states, states);
2064 if (ret != 0) {
2065 pfctl_free_states(states);
2066 return (ret);
2067 }
2068
2069 return (0);
2070 }
2071
2072 void
pfctl_free_states(struct pfctl_states * states)2073 pfctl_free_states(struct pfctl_states *states)
2074 {
2075 struct pfctl_state *s, *tmp;
2076
2077 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) {
2078 free(s);
2079 }
2080
2081 bzero(states, sizeof(*states));
2082 }
2083
2084 struct pfctl_nl_clear_states {
2085 uint32_t killed;
2086 };
2087 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field)
2088 static struct snl_attr_parser ap_clear_states[] = {
2089 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 },
2090 };
2091 #undef _OUT
2092 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, snl_f_p_empty, ap_clear_states);
2093
2094 static int
_pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed,int cmd)2095 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2096 unsigned int *killed, int cmd)
2097 {
2098 struct snl_writer nw;
2099 struct snl_errmsg_data e = {};
2100 struct pfctl_nl_clear_states attrs = {};
2101 struct nlmsghdr *hdr;
2102 uint32_t seq_id;
2103 int family_id;
2104
2105 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2106 if (family_id == 0)
2107 return (ENOTSUP);
2108
2109 snl_init_writer(&h->ss, &nw);
2110 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
2111 hdr->nlmsg_flags |= NLM_F_DUMP;
2112
2113 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id);
2114 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid));
2115 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction);
2116 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af);
2117 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto);
2118 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src);
2119 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst);
2120 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr);
2121 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname);
2122 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label);
2123 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match);
2124 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat);
2125
2126 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2127 return (ENXIO);
2128
2129 seq_id = hdr->nlmsg_seq;
2130
2131 if (! snl_send_message(&h->ss, hdr))
2132 return (ENXIO);
2133
2134 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2135 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs))
2136 continue;
2137 }
2138
2139 if (killed)
2140 *killed = attrs.killed;
2141
2142 return (e.error);
2143 }
2144
2145 int
pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2146 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2147 unsigned int *killed)
2148 {
2149 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES));
2150 }
2151
2152 int
pfctl_kill_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2153 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2154 unsigned int *killed)
2155 {
2156 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES));
2157 }
2158
2159 static int
_pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed,uint64_t cmd)2160 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2161 unsigned int *killed, uint64_t cmd)
2162 {
2163 struct pfctl_handle *h;
2164 int ret;
2165
2166 h = pfctl_open(PF_DEVICE);
2167 if (h == NULL)
2168 return (ENODEV);
2169
2170 ret = _pfctl_clear_states_h(h, kill, killed, cmd);
2171 pfctl_close(h);
2172
2173 return (ret);
2174 }
2175
2176 int
pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2177 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2178 unsigned int *killed)
2179 {
2180 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES));
2181 }
2182
2183 int
pfctl_kill_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2184 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed)
2185 {
2186 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES));
2187 }
2188
2189 int
pfctl_clear_rules(int dev,const char * anchorname)2190 pfctl_clear_rules(int dev, const char *anchorname)
2191 {
2192 struct pfioc_trans trans;
2193 struct pfioc_trans_e transe[2];
2194 int ret;
2195
2196 bzero(&trans, sizeof(trans));
2197 bzero(&transe, sizeof(transe));
2198
2199 transe[0].rs_num = PF_RULESET_SCRUB;
2200 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2201 >= sizeof(transe[0].anchor))
2202 return (E2BIG);
2203
2204 transe[1].rs_num = PF_RULESET_FILTER;
2205 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2206 >= sizeof(transe[1].anchor))
2207 return (E2BIG);
2208
2209 trans.size = 2;
2210 trans.esize = sizeof(transe[0]);
2211 trans.array = transe;
2212
2213 ret = ioctl(dev, DIOCXBEGIN, &trans);
2214 if (ret != 0)
2215 return (errno);
2216 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2217 if (ret != 0)
2218 return (errno);
2219
2220 return (0);
2221 }
2222
2223 int
pfctl_clear_nat(int dev,const char * anchorname)2224 pfctl_clear_nat(int dev, const char *anchorname)
2225 {
2226 struct pfioc_trans trans;
2227 struct pfioc_trans_e transe[3];
2228 int ret;
2229
2230 bzero(&trans, sizeof(trans));
2231 bzero(&transe, sizeof(transe));
2232
2233 transe[0].rs_num = PF_RULESET_NAT;
2234 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2235 >= sizeof(transe[0].anchor))
2236 return (E2BIG);
2237
2238 transe[1].rs_num = PF_RULESET_BINAT;
2239 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2240 >= sizeof(transe[0].anchor))
2241 return (E2BIG);
2242
2243 transe[2].rs_num = PF_RULESET_RDR;
2244 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor))
2245 >= sizeof(transe[2].anchor))
2246 return (E2BIG);
2247
2248 trans.size = 3;
2249 trans.esize = sizeof(transe[0]);
2250 trans.array = transe;
2251
2252 ret = ioctl(dev, DIOCXBEGIN, &trans);
2253 if (ret != 0)
2254 return (errno);
2255 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2256 if (ret != 0)
2257 return (errno);
2258
2259 return (0);
2260 }
2261
2262 int
pfctl_clear_eth_rules(int dev,const char * anchorname)2263 pfctl_clear_eth_rules(int dev, const char *anchorname)
2264 {
2265 struct pfioc_trans trans;
2266 struct pfioc_trans_e transe;
2267 int ret;
2268
2269 bzero(&trans, sizeof(trans));
2270 bzero(&transe, sizeof(transe));
2271
2272 transe.rs_num = PF_RULESET_ETH;
2273 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor))
2274 >= sizeof(transe.anchor))
2275 return (E2BIG);
2276
2277 trans.size = 1;
2278 trans.esize = sizeof(transe);
2279 trans.array = &transe;
2280
2281 ret = ioctl(dev, DIOCXBEGIN, &trans);
2282 if (ret != 0)
2283 return (errno);
2284 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2285 if (ret != 0)
2286 return (errno);
2287
2288 return (0);
2289 }
2290
2291 static int
_pfctl_get_limit(int dev,const int index,uint * limit)2292 _pfctl_get_limit(int dev, const int index, uint *limit)
2293 {
2294 struct pfioc_limit pl;
2295
2296 bzero(&pl, sizeof(pl));
2297 pl.index = index;
2298
2299 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1)
2300 return (errno);
2301
2302 *limit = pl.limit;
2303
2304 return (0);
2305 }
2306
2307 int
pfctl_set_syncookies(int dev,const struct pfctl_syncookies * s)2308 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s)
2309 {
2310 struct pfioc_nv nv;
2311 nvlist_t *nvl;
2312 int ret;
2313 uint state_limit;
2314 uint64_t lim, hi, lo;
2315
2316 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2317 if (ret != 0)
2318 return (ret);
2319
2320 if (state_limit == 0)
2321 state_limit = INT_MAX;
2322
2323 lim = state_limit;
2324 hi = lim * s->highwater / 100;
2325 lo = lim * s->lowwater / 100;
2326
2327 if (lo == hi)
2328 hi++;
2329
2330 nvl = nvlist_create(0);
2331
2332 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER);
2333 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE);
2334 nvlist_add_number(nvl, "highwater", hi);
2335 nvlist_add_number(nvl, "lowwater", lo);
2336
2337 nv.data = nvlist_pack(nvl, &nv.len);
2338 nv.size = nv.len;
2339 nvlist_destroy(nvl);
2340 nvl = NULL;
2341
2342 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv);
2343
2344 free(nv.data);
2345 if (ret != 0)
2346 return (errno);
2347
2348 return (0);
2349 }
2350
2351 int
pfctl_get_syncookies(int dev,struct pfctl_syncookies * s)2352 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s)
2353 {
2354 nvlist_t *nvl;
2355 int ret;
2356 uint state_limit;
2357 bool enabled, adaptive;
2358
2359 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2360 if (ret != 0)
2361 return (ret);
2362
2363 if (state_limit == 0)
2364 state_limit = INT_MAX;
2365
2366 bzero(s, sizeof(*s));
2367
2368 nvl = nvlist_create(0);
2369
2370 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) {
2371 ret = errno;
2372 goto out;
2373 }
2374
2375 enabled = nvlist_get_bool(nvl, "enabled");
2376 adaptive = nvlist_get_bool(nvl, "adaptive");
2377
2378 if (enabled) {
2379 if (adaptive)
2380 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE;
2381 else
2382 s->mode = PFCTL_SYNCOOKIES_ALWAYS;
2383 } else {
2384 s->mode = PFCTL_SYNCOOKIES_NEVER;
2385 }
2386
2387 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit;
2388 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit;
2389 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states");
2390
2391 out:
2392 nvlist_destroy(nvl);
2393 return (ret);
2394 }
2395
2396 int
pfctl_table_add_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * nadd,int flags)2397 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2398 *addr, int size, int *nadd, int flags)
2399 {
2400 struct pfioc_table io;
2401
2402 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2403 return (EINVAL);
2404 }
2405 bzero(&io, sizeof io);
2406 io.pfrio_flags = flags;
2407 io.pfrio_table = *tbl;
2408 io.pfrio_buffer = addr;
2409 io.pfrio_esize = sizeof(*addr);
2410 io.pfrio_size = size;
2411
2412 if (ioctl(dev, DIOCRADDADDRS, &io))
2413 return (errno);
2414 if (nadd != NULL)
2415 *nadd = io.pfrio_nadd;
2416 return (0);
2417 }
2418
2419 static void
snl_add_msg_attr_table(struct snl_writer * nw,uint32_t type,const struct pfr_table * tbl)2420 snl_add_msg_attr_table(struct snl_writer *nw, uint32_t type,
2421 const struct pfr_table *tbl)
2422 {
2423 int off;
2424
2425 off = snl_add_msg_attr_nested(nw, type);
2426
2427 snl_add_msg_attr_string(nw, PF_T_ANCHOR, tbl->pfrt_anchor);
2428 snl_add_msg_attr_string(nw, PF_T_NAME, tbl->pfrt_name);
2429 snl_add_msg_attr_u32(nw, PF_T_TABLE_FLAGS, tbl->pfrt_flags);
2430
2431 snl_end_attr_nested(nw, off);
2432 }
2433
2434 static void
snl_add_msg_attr_pfr_addr(struct snl_writer * nw,uint32_t type,const struct pfr_addr * addr)2435 snl_add_msg_attr_pfr_addr(struct snl_writer *nw, uint32_t type,
2436 const struct pfr_addr *addr)
2437 {
2438 int off;
2439
2440 off = snl_add_msg_attr_nested(nw, type);
2441
2442 snl_add_msg_attr_u8(nw, PFR_A_AF, addr->pfra_af);
2443 snl_add_msg_attr_u8(nw, PFR_A_NET, addr->pfra_net);
2444 snl_add_msg_attr_bool(nw, PFR_A_NOT, addr->pfra_not);
2445 snl_add_msg_attr_ip6(nw, PFR_A_ADDR, &addr->pfra_ip6addr);
2446
2447 snl_end_attr_nested(nw, off);
2448 }
2449
2450 static struct snl_attr_parser ap_table_add_addr[] = {
2451 { .type = PF_TA_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 },
2452 };
2453 SNL_DECLARE_PARSER(table_add_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_add_addr);
2454
2455 static int
_pfctl_table_add_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * nadd,int flags)2456 _pfctl_table_add_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr
2457 *addrs, int size, int *nadd, int flags)
2458 {
2459 struct snl_writer nw;
2460 struct snl_errmsg_data e = {};
2461 struct nlmsghdr *hdr;
2462 uint32_t seq_id;
2463 uint32_t added;
2464 int family_id;
2465
2466 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2467 if (family_id == 0)
2468 return (ENOTSUP);
2469
2470 snl_init_writer(&h->ss, &nw);
2471 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_ADD_ADDR);
2472
2473 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
2474 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
2475 for (int i = 0; i < size; i++)
2476 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]);
2477
2478 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2479 return (ENXIO);
2480 seq_id = hdr->nlmsg_seq;
2481
2482 if (! snl_send_message(&h->ss, hdr))
2483 return (ENXIO);
2484
2485 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2486 if (! snl_parse_nlmsg(&h->ss, hdr, &table_add_addr_parser, &added))
2487 continue;
2488 }
2489
2490 if (nadd)
2491 *nadd = added;
2492
2493 return (e.error);
2494 }
2495
2496 int
pfctl_table_add_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * nadd,int flags)2497 pfctl_table_add_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr
2498 *addr, int size, int *nadd, int flags)
2499 {
2500 int ret;
2501 int off = 0;
2502 int partial_added;
2503 int chunk_size;
2504
2505 do {
2506 chunk_size = MIN(size - off, 256);
2507 ret = _pfctl_table_add_addrs_h(h, tbl, &addr[off], chunk_size, &partial_added, flags);
2508 if (ret != 0)
2509 break;
2510 if (nadd)
2511 *nadd += partial_added;
2512 off += chunk_size;
2513 } while (off < size);
2514
2515 return (ret);
2516 }
2517
2518 static struct snl_attr_parser ap_table_del_addr[] = {
2519 { .type = PF_TA_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 },
2520 };
2521 SNL_DECLARE_PARSER(table_del_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_del_addr);
2522 static int
_pfctl_table_del_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * ndel,int flags)2523 _pfctl_table_del_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr
2524 *addrs, int size, int *ndel, int flags)
2525 {
2526 struct snl_writer nw;
2527 struct snl_errmsg_data e = {};
2528 struct nlmsghdr *hdr;
2529 uint32_t seq_id;
2530 uint32_t deleted;
2531 int family_id;
2532
2533 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2534 if (family_id == 0)
2535 return (ENOTSUP);
2536
2537 snl_init_writer(&h->ss, &nw);
2538 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_DEL_ADDR);
2539
2540 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
2541 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
2542 for (int i = 0; i < size; i++)
2543 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]);
2544
2545 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2546 return (ENXIO);
2547 seq_id = hdr->nlmsg_seq;
2548
2549 if (! snl_send_message(&h->ss, hdr))
2550 return (ENXIO);
2551
2552 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2553 if (! snl_parse_nlmsg(&h->ss, hdr, &table_del_addr_parser, &deleted))
2554 continue;
2555 }
2556
2557 if (ndel)
2558 *ndel = deleted;
2559
2560 return (e.error);
2561 }
2562
2563 int
pfctl_table_del_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * ndel,int flags)2564 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2565 *addr, int size, int *ndel, int flags)
2566 {
2567 struct pfioc_table io;
2568
2569 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2570 return (EINVAL);
2571 }
2572 bzero(&io, sizeof io);
2573 io.pfrio_flags = flags;
2574 io.pfrio_table = *tbl;
2575 io.pfrio_buffer = addr;
2576 io.pfrio_esize = sizeof(*addr);
2577 io.pfrio_size = size;
2578
2579 if (ioctl(dev, DIOCRDELADDRS, &io))
2580 return (errno);
2581 if (ndel != NULL)
2582 *ndel = io.pfrio_ndel;
2583 return (0);
2584 }
2585
2586 int
pfctl_table_del_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * ndel,int flags)2587 pfctl_table_del_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr
2588 *addr, int size, int *ndel, int flags)
2589 {
2590 int ret;
2591 int off = 0;
2592 int partial_deleted;
2593 int chunk_size;
2594
2595 do {
2596 chunk_size = MIN(size - off, 256);
2597 ret = _pfctl_table_del_addrs_h(h, tbl, &addr[off], chunk_size,
2598 &partial_deleted, flags);
2599 if (ret != 0)
2600 break;
2601 if (ndel)
2602 *ndel += partial_deleted;
2603 off += chunk_size;
2604 } while (off < size);
2605
2606 return (ret);
2607 }
2608
2609 struct pfctl_change {
2610 int add;
2611 int del;
2612 int change;
2613 };
2614 #define _OUT(_field) offsetof(struct pfctl_change, _field)
2615 static struct snl_attr_parser ap_table_set_addr[] = {
2616 { .type = PF_TA_NBR_ADDED, .off = _OUT(add), .cb = snl_attr_get_uint32 },
2617 { .type = PF_TA_NBR_DELETED, .off = _OUT(del), .cb = snl_attr_get_uint32 },
2618 { .type = PF_TA_NBR_CHANGED, .off = _OUT(change), .cb = snl_attr_get_uint32 },
2619 };
2620 #undef _OUT
2621 SNL_DECLARE_PARSER(table_set_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_set_addr);
2622
2623 static int
_pfctl_table_set_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * nadd,int * ndel,int * nchange,int flags)2624 _pfctl_table_set_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr
2625 *addrs, int size, int *nadd, int *ndel, int *nchange, int flags)
2626 {
2627 struct snl_writer nw;
2628 struct snl_errmsg_data e = {};
2629 struct nlmsghdr *hdr;
2630 struct pfctl_change change = { 0 };
2631 uint32_t seq_id;
2632 int family_id;
2633
2634 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2635 if (family_id == 0)
2636 return (ENOTSUP);
2637
2638 snl_init_writer(&h->ss, &nw);
2639 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_SET_ADDR);
2640
2641 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
2642 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
2643 for (int i = 0; i < size; i++)
2644 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]);
2645
2646 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2647 return (ENXIO);
2648 seq_id = hdr->nlmsg_seq;
2649
2650 if (! snl_send_message(&h->ss, hdr))
2651 return (ENXIO);
2652
2653 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2654 if (! snl_parse_nlmsg(&h->ss, hdr, &table_set_addr_parser, &change))
2655 continue;
2656 }
2657
2658 if (nadd)
2659 *nadd = change.add;
2660 if (ndel)
2661 *ndel = change.del;
2662 if (nchange)
2663 *nchange = change.change;
2664
2665 return (e.error);
2666 }
2667
2668 int
pfctl_table_set_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * nadd,int * ndel,int * nchange,int flags)2669 pfctl_table_set_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl,
2670 struct pfr_addr *addr, int size, int *nadd, int *ndel,
2671 int *nchange, int flags)
2672 {
2673 int ret;
2674 int off = 0;
2675 int partial_add, partial_del, partial_change;
2676 int chunk_size;
2677
2678 do {
2679 flags &= ~(PFR_FLAG_START | PFR_FLAG_DONE);
2680 if (off == 0)
2681 flags |= PFR_FLAG_START;
2682 chunk_size = MIN(size - off, 256);
2683 if ((chunk_size + off) == size)
2684 flags |= PFR_FLAG_DONE;
2685 ret = _pfctl_table_set_addrs_h(h, tbl, &addr[off], chunk_size,
2686 &partial_add, &partial_del, &partial_change, flags);
2687 if (ret != 0)
2688 break;
2689 if (! (flags & PFR_FLAG_DONE)) {
2690 assert(partial_del == 0);
2691 }
2692 if (nadd)
2693 *nadd += partial_add;
2694 if (ndel)
2695 *ndel += partial_del;
2696 if (nchange)
2697 *nchange += partial_change;
2698 off += chunk_size;
2699 } while (off < size);
2700
2701 return (ret);
2702 }
2703
2704 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)2705 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2706 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags)
2707 {
2708 struct pfioc_table io;
2709
2710 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2711 return (EINVAL);
2712 }
2713 bzero(&io, sizeof io);
2714 io.pfrio_flags = flags;
2715 io.pfrio_table = *tbl;
2716 io.pfrio_buffer = addr;
2717 io.pfrio_esize = sizeof(*addr);
2718 io.pfrio_size = size;
2719 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0;
2720 if (ioctl(dev, DIOCRSETADDRS, &io))
2721 return (errno);
2722 if (nadd != NULL)
2723 *nadd = io.pfrio_nadd;
2724 if (ndel != NULL)
2725 *ndel = io.pfrio_ndel;
2726 if (nchange != NULL)
2727 *nchange = io.pfrio_nchange;
2728 if (size2 != NULL)
2729 *size2 = io.pfrio_size2;
2730 return (0);
2731 }
2732
pfctl_table_get_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int * size,int flags)2733 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr,
2734 int *size, int flags)
2735 {
2736 struct pfioc_table io;
2737
2738 if (tbl == NULL || size == NULL || *size < 0 ||
2739 (*size && addr == NULL)) {
2740 return (EINVAL);
2741 }
2742 bzero(&io, sizeof io);
2743 io.pfrio_flags = flags;
2744 io.pfrio_table = *tbl;
2745 io.pfrio_buffer = addr;
2746 io.pfrio_esize = sizeof(*addr);
2747 io.pfrio_size = *size;
2748 if (ioctl(dev, DIOCRGETADDRS, &io))
2749 return (errno);
2750 *size = io.pfrio_size;
2751 return (0);
2752 }
2753
2754 struct nl_addrs {
2755 size_t max;
2756 struct pfr_addr *addrs;
2757 size_t count;
2758 size_t total_count;
2759 };
2760
2761 #define _OUT(_field) offsetof(struct pfr_addr, _field)
2762 static const struct snl_attr_parser ap_pfr_addr[] = {
2763 { .type = PFR_A_AF, .off = _OUT(pfra_af), .cb = snl_attr_get_uint32 },
2764 { .type = PFR_A_NET, .off = _OUT(pfra_net), .cb = snl_attr_get_uint8 },
2765 { .type = PFR_A_NOT, .off = _OUT(pfra_not), .cb = snl_attr_get_bool },
2766 { .type = PFR_A_ADDR, .off = _OUT(pfra_ip6addr), .cb = snl_attr_get_in6_addr },
2767 };
2768 #undef _OUT
2769 SNL_DECLARE_ATTR_PARSER(pfr_addr_parser, ap_pfr_addr);
2770
2771 static bool
snl_attr_get_pfr_addrs(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)2772 snl_attr_get_pfr_addrs(struct snl_state *ss, struct nlattr *nla,
2773 const void *arg __unused, void *target)
2774 {
2775 struct nl_addrs *a = (struct nl_addrs *)target;
2776 bool ret;
2777
2778 if (a->count >= a->max)
2779 return (false);
2780
2781 ret = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla),
2782 &pfr_addr_parser, &a->addrs[a->count]);
2783 if (ret)
2784 a->count++;
2785
2786 return (ret);
2787 }
2788
2789 #define _OUT(_field) offsetof(struct nl_addrs, _field)
2790 static struct snl_attr_parser ap_table_get_addr[] = {
2791 { .type = PF_TA_ADDR, .off = 0, .cb = snl_attr_get_pfr_addrs },
2792 { .type = PF_TA_ADDR_COUNT, .off = _OUT(total_count), .cb = snl_attr_get_uint32 },
2793 };
2794 #undef _OUT
2795 SNL_DECLARE_PARSER(table_get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_get_addr);
2796 int
pfctl_table_get_addrs_h(struct pfctl_handle * h,struct pfr_table * tbl,struct pfr_addr * addr,int * size,int flags)2797 pfctl_table_get_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl,
2798 struct pfr_addr *addr, int *size, int flags)
2799 {
2800 struct nl_addrs addrs = { 0 };
2801 struct snl_writer nw;
2802 struct snl_errmsg_data e = {};
2803 struct nlmsghdr *hdr;
2804 uint32_t seq_id;
2805 int family_id;
2806
2807 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2808 if (family_id == 0)
2809 return (ENOTSUP);
2810
2811 snl_init_writer(&h->ss, &nw);
2812 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_GET_ADDR);
2813
2814 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
2815 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
2816
2817 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2818 return (ENXIO);
2819
2820 seq_id = hdr->nlmsg_seq;
2821 if (! snl_send_message(&h->ss, hdr))
2822 return (ENXIO);
2823
2824 addrs.addrs = addr;
2825 addrs.max = *size;
2826 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2827 if (! snl_parse_nlmsg(&h->ss, hdr, &table_get_addr_parser, &addrs))
2828 continue;
2829 }
2830
2831 *size = addrs.total_count;
2832
2833 return (e.error);
2834 }
2835
2836 int
pfctl_set_statusif(struct pfctl_handle * h,const char * ifname)2837 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname)
2838 {
2839 struct snl_writer nw;
2840 struct snl_errmsg_data e = {};
2841 struct nlmsghdr *hdr;
2842 uint32_t seq_id;
2843 int family_id;
2844
2845 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2846 if (family_id == 0)
2847 return (ENOTSUP);
2848
2849 snl_init_writer(&h->ss, &nw);
2850 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF);
2851
2852 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname);
2853
2854 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2855 return (ENXIO);
2856
2857 seq_id = hdr->nlmsg_seq;
2858
2859 if (! snl_send_message(&h->ss, hdr))
2860 return (ENXIO);
2861
2862 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2863 }
2864
2865 return (e.error);
2866 }
2867
2868 #define _IN(_field) offsetof(struct genlmsghdr, _field)
2869 #define _OUT(_field) offsetof(struct pfctl_natlook, _field)
2870 static struct snl_attr_parser ap_natlook[] = {
2871 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr },
2872 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr },
2873 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 },
2874 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 },
2875 };
2876 #undef _IN
2877 #undef _OUT
2878 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, snl_f_p_empty, ap_natlook);
2879
2880 int
pfctl_natlook(struct pfctl_handle * h,const struct pfctl_natlook_key * k,struct pfctl_natlook * r)2881 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k,
2882 struct pfctl_natlook *r)
2883 {
2884 struct snl_writer nw;
2885 struct snl_errmsg_data e = {};
2886 struct nlmsghdr *hdr;
2887 uint32_t seq_id;
2888 int family_id;
2889
2890 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2891 if (family_id == 0)
2892 return (ENOTSUP);
2893
2894 snl_init_writer(&h->ss, &nw);
2895 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK);
2896 hdr->nlmsg_flags |= NLM_F_DUMP;
2897
2898 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af);
2899 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction);
2900 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto);
2901 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6);
2902 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6);
2903 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport);
2904 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport);
2905
2906 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2907 return (ENXIO);
2908
2909 seq_id = hdr->nlmsg_seq;
2910
2911 if (! snl_send_message(&h->ss, hdr))
2912 return (ENXIO);
2913
2914 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2915 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r))
2916 continue;
2917 }
2918
2919 return (e.error);
2920 }
2921
2922 int
pfctl_set_debug(struct pfctl_handle * h,uint32_t level)2923 pfctl_set_debug(struct pfctl_handle *h, uint32_t level)
2924 {
2925 struct snl_writer nw;
2926 struct snl_errmsg_data e = {};
2927 struct nlmsghdr *hdr;
2928 uint32_t seq_id;
2929 int family_id;
2930
2931 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2932 if (family_id == 0)
2933 return (ENOTSUP);
2934
2935 snl_init_writer(&h->ss, &nw);
2936 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG);
2937
2938 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level);
2939
2940 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2941 return (ENXIO);
2942
2943 seq_id = hdr->nlmsg_seq;
2944
2945 if (! snl_send_message(&h->ss, hdr))
2946 return (ENXIO);
2947
2948 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2949 }
2950
2951 return (e.error);
2952 }
2953
2954 int
pfctl_set_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t seconds)2955 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds)
2956 {
2957 struct snl_writer nw;
2958 struct snl_errmsg_data e = {};
2959 struct nlmsghdr *hdr;
2960 uint32_t seq_id;
2961 int family_id;
2962
2963 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2964 if (family_id == 0)
2965 return (ENOTSUP);
2966
2967 snl_init_writer(&h->ss, &nw);
2968 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT);
2969
2970 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2971 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds);
2972
2973 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2974 return (ENXIO);
2975
2976 seq_id = hdr->nlmsg_seq;
2977
2978 if (! snl_send_message(&h->ss, hdr))
2979 return (ENXIO);
2980
2981 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2982 }
2983
2984 return (e.error);
2985 }
2986
2987 struct pfctl_nl_timeout {
2988 uint32_t seconds;
2989 };
2990 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field)
2991 static struct snl_attr_parser ap_get_timeout[] = {
2992 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
2993 };
2994 #undef _OUT
2995 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, snl_f_p_empty, ap_get_timeout);
2996
2997 int
pfctl_get_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t * seconds)2998 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds)
2999 {
3000 struct snl_writer nw;
3001 struct pfctl_nl_timeout to = {};
3002 struct snl_errmsg_data e = {};
3003 struct nlmsghdr *hdr;
3004 uint32_t seq_id;
3005 int family_id;
3006
3007 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3008 if (family_id == 0)
3009 return (ENOTSUP);
3010
3011 snl_init_writer(&h->ss, &nw);
3012 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT);
3013 hdr->nlmsg_flags |= NLM_F_DUMP;
3014
3015 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
3016
3017 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3018 return (ENXIO);
3019
3020 seq_id = hdr->nlmsg_seq;
3021
3022 if (! snl_send_message(&h->ss, hdr))
3023 return (ENXIO);
3024
3025 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3026 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to))
3027 continue;
3028 }
3029
3030 if (seconds != NULL)
3031 *seconds = to.seconds;
3032
3033 return (e.error);
3034 }
3035
3036 int
pfctl_set_limit(struct pfctl_handle * h,const int index,const uint limit)3037 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit)
3038 {
3039 struct snl_writer nw;
3040 struct snl_errmsg_data e = {};
3041 struct nlmsghdr *hdr;
3042 uint32_t seq_id;
3043 int family_id;
3044
3045 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3046 if (family_id == 0)
3047 return (ENOTSUP);
3048
3049 snl_init_writer(&h->ss, &nw);
3050 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT);
3051
3052 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
3053 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit);
3054
3055 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3056 return (ENXIO);
3057
3058 seq_id = hdr->nlmsg_seq;
3059
3060 if (! snl_send_message(&h->ss, hdr))
3061 return (ENXIO);
3062
3063 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3064 }
3065
3066 return (e.error);
3067 }
3068
3069 struct pfctl_nl_limit {
3070 unsigned int limit;
3071 };
3072 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field)
3073 static struct snl_attr_parser ap_get_limit[] = {
3074 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
3075 };
3076 #undef _OUT
3077 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, snl_f_p_empty, ap_get_limit);
3078
3079 int
pfctl_get_limit(struct pfctl_handle * h,const int index,uint * limit)3080 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit)
3081 {
3082 struct snl_writer nw;
3083 struct pfctl_nl_limit li = {};
3084 struct snl_errmsg_data e = {};
3085 struct nlmsghdr *hdr;
3086 uint32_t seq_id;
3087 int family_id;
3088
3089 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3090 if (family_id == 0)
3091 return (ENOTSUP);
3092
3093 snl_init_writer(&h->ss, &nw);
3094 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT);
3095 hdr->nlmsg_flags |= NLM_F_DUMP;
3096
3097 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
3098
3099 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3100 return (ENXIO);
3101
3102 seq_id = hdr->nlmsg_seq;
3103
3104 if (! snl_send_message(&h->ss, hdr))
3105 return (ENXIO);
3106
3107 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3108 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li))
3109 continue;
3110 }
3111
3112 if (limit != NULL)
3113 *limit = li.limit;
3114
3115 return (e.error);
3116 }
3117
3118 struct pfctl_nl_begin_addrs {
3119 uint32_t ticket;
3120 };
3121 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field)
3122 static struct snl_attr_parser ap_begin_addrs[] = {
3123 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
3124 };
3125 #undef _OUT
3126 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_begin_addrs);
3127
3128 int
pfctl_begin_addrs(struct pfctl_handle * h,uint32_t * ticket)3129 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket)
3130 {
3131 struct snl_writer nw;
3132 struct pfctl_nl_begin_addrs attrs = {};
3133 struct snl_errmsg_data e = {};
3134 struct nlmsghdr *hdr;
3135 uint32_t seq_id;
3136 int family_id;
3137
3138 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3139 if (family_id == 0)
3140 return (ENOTSUP);
3141
3142 snl_init_writer(&h->ss, &nw);
3143 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS);
3144 hdr->nlmsg_flags |= NLM_F_DUMP;
3145
3146 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3147 return (ENXIO);
3148
3149 seq_id = hdr->nlmsg_seq;
3150
3151 if (! snl_send_message(&h->ss, hdr))
3152 return (ENXIO);
3153
3154 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3155 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs))
3156 continue;
3157 }
3158
3159 if (ticket != NULL)
3160 *ticket = attrs.ticket;
3161
3162 return (e.error);
3163 }
3164
3165 int
pfctl_add_addr(struct pfctl_handle * h,const struct pfioc_pooladdr * pa,int which)3166 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which)
3167 {
3168 struct snl_writer nw;
3169 struct snl_errmsg_data e = {};
3170 struct nlmsghdr *hdr;
3171 uint32_t seq_id;
3172 int family_id;
3173
3174 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3175 if (family_id == 0)
3176 return (ENOTSUP);
3177
3178 snl_init_writer(&h->ss, &nw);
3179 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR);
3180
3181 snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action);
3182 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket);
3183 snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr);
3184 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num);
3185 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action);
3186 snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last);
3187 snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af);
3188 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor);
3189 snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr);
3190 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
3191
3192 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3193 return (ENXIO);
3194
3195 seq_id = hdr->nlmsg_seq;
3196
3197 if (! snl_send_message(&h->ss, hdr))
3198 return (ENXIO);
3199
3200 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3201 }
3202
3203 return (e.error);
3204 }
3205
3206 static const struct snl_attr_parser ap_get_addrs[] = {
3207 { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 },
3208 };
3209 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addrs);
3210
3211 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)3212 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
3213 uint8_t r_action, const char *anchor, uint32_t *nr, int which)
3214 {
3215 struct snl_writer nw;
3216 struct snl_errmsg_data e = {};
3217 struct nlmsghdr *hdr;
3218 uint32_t seq_id;
3219 int family_id;
3220
3221 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3222 if (family_id == 0)
3223 return (ENOTSUP);
3224
3225 snl_init_writer(&h->ss, &nw);
3226 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS);
3227
3228 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
3229 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
3230 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
3231 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
3232 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
3233
3234 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3235 return (ENXIO);
3236
3237 seq_id = hdr->nlmsg_seq;
3238
3239 if (! snl_send_message(&h->ss, hdr))
3240 return (ENXIO);
3241
3242 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3243 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr))
3244 continue;
3245 }
3246
3247 return (e.error);
3248 }
3249
3250 #define _OUT(_field) offsetof(struct pf_pooladdr, _field)
3251 static const struct snl_attr_parser ap_pool_addr[] = {
3252 { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
3253 { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
3254 };
3255 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr);
3256 #undef _OUT
3257
3258 #define _OUT(_field) offsetof(struct pfioc_pooladdr, _field)
3259 static const struct snl_attr_parser ap_get_addr[] = {
3260 { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 },
3261 { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
3262 { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
3263 { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 },
3264 { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 },
3265 { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 },
3266 { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
3267 { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string },
3268 { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested },
3269 };
3270 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addr);
3271 #undef _OUT
3272
3273 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)3274 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
3275 uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa,
3276 int which)
3277 {
3278 struct snl_writer nw;
3279 struct snl_errmsg_data e = {};
3280 struct nlmsghdr *hdr;
3281 uint32_t seq_id;
3282 int family_id;
3283
3284 family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3285 if (family_id == 0)
3286 return (ENOTSUP);
3287
3288 snl_init_writer(&h->ss, &nw);
3289 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR);
3290
3291 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
3292 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
3293 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
3294 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
3295 snl_add_msg_attr_u32(&nw, PF_AA_NR, nr);
3296 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
3297
3298 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3299 return (ENXIO);
3300
3301 seq_id = hdr->nlmsg_seq;
3302
3303 if (! snl_send_message(&h->ss, hdr))
3304 return (ENXIO);
3305
3306 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3307 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa))
3308 continue;
3309 }
3310
3311 return (e.error);
3312 }
3313
3314 #define _OUT(_field) offsetof(struct pfioc_ruleset, _field)
3315 static const struct snl_attr_parser ap_ruleset[] = {
3316 { .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
3317 { .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string },
3318 };
3319 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, snl_f_p_empty, ap_ruleset);
3320 #undef _OUT
3321
3322 int
pfctl_get_rulesets(struct pfctl_handle * h,const char * path,uint32_t * nr)3323 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr)
3324 {
3325 struct snl_writer nw;
3326 struct snl_errmsg_data e = {};
3327 struct nlmsghdr *hdr;
3328 struct pfioc_ruleset rs = {};
3329 uint32_t seq_id;
3330 int family_id;
3331
3332 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3333 if (family_id == 0)
3334 return (ENOTSUP);
3335
3336 snl_init_writer(&h->ss, &nw);
3337 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS);
3338
3339 snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
3340
3341 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3342 return (ENXIO);
3343
3344 seq_id = hdr->nlmsg_seq;
3345
3346 if (! snl_send_message(&h->ss, hdr))
3347 return (ENXIO);
3348
3349 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3350 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs))
3351 continue;
3352 }
3353
3354 *nr = rs.nr;
3355
3356 return (e.error);
3357 }
3358
3359 int
pfctl_get_ruleset(struct pfctl_handle * h,const char * path,uint32_t nr,struct pfioc_ruleset * rs)3360 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs)
3361 {
3362 struct snl_writer nw;
3363 struct snl_errmsg_data e = {};
3364 struct nlmsghdr *hdr;
3365 uint32_t seq_id;
3366 int family_id;
3367
3368 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3369 if (family_id == 0)
3370 return (ENOTSUP);
3371
3372 snl_init_writer(&h->ss, &nw);
3373 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET);
3374
3375 snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
3376 snl_add_msg_attr_u32(&nw, PF_RS_NR, nr);
3377
3378 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3379 return (ENXIO);
3380
3381 seq_id = hdr->nlmsg_seq;
3382
3383 if (! snl_send_message(&h->ss, hdr))
3384 return (ENXIO);
3385
3386 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3387 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs))
3388 continue;
3389 }
3390
3391 rs->nr = nr;
3392 strlcpy(rs->path, path, sizeof(rs->path));
3393
3394 return (e.error);
3395 }
3396
3397 #define _OUT(_field) offsetof(struct pfctl_src_node, _field)
3398 static struct snl_attr_parser ap_srcnode[] = {
3399 { .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr },
3400 { .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr },
3401 { .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
3402 { .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
3403 { .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
3404 { .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
3405 { .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
3406 { .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
3407 { .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 },
3408 { .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
3409 { .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 },
3410 { .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 },
3411 { .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 },
3412 { .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested },
3413 { .type = PF_SN_RAF, .off = _OUT(raf), .cb = snl_attr_get_uint8 },
3414 { .type = PF_SN_NODE_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 },
3415 };
3416 #undef _OUT
3417 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, snl_f_p_empty, ap_srcnode);
3418
3419 int
pfctl_get_srcnodes(struct pfctl_handle * h,pfctl_get_srcnode_fn fn,void * arg)3420 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg)
3421 {
3422 struct snl_writer nw;
3423 struct pfctl_src_node sn;
3424 struct snl_errmsg_data e = {};
3425 struct nlmsghdr *hdr;
3426 uint32_t seq_id;
3427 int family_id;
3428 int ret;
3429
3430 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3431 if (family_id == 0)
3432 return (ENOTSUP);
3433
3434 snl_init_writer(&h->ss, &nw);
3435 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES);
3436
3437 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3438 return (ENXIO);
3439
3440 seq_id = hdr->nlmsg_seq;
3441
3442 if (!snl_send_message(&h->ss, hdr))
3443 return (ENXIO);
3444
3445 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3446 bzero(&sn, sizeof(sn));
3447 if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn))
3448 continue;
3449
3450 ret = fn(&sn, arg);
3451 if (ret != 0)
3452 return (ret);
3453 }
3454
3455 return (e.error);
3456 }
3457
3458 static struct snl_attr_parser ap_ndel[] = {
3459 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 },
3460 };
3461 SNL_DECLARE_PARSER(ndel_parser, struct genlmsghdr, snl_f_p_empty, ap_ndel);
3462
3463 int
pfctl_clear_tables(struct pfctl_handle * h,struct pfr_table * filter,int * ndel,int flags)3464 pfctl_clear_tables(struct pfctl_handle *h, struct pfr_table *filter,
3465 int *ndel, int flags)
3466 {
3467 struct snl_writer nw;
3468 struct snl_errmsg_data e = {};
3469 struct nlmsghdr *hdr;
3470 uint32_t seq_id;
3471 int family_id;
3472
3473 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3474 if (family_id == 0)
3475 return (ENOTSUP);
3476
3477 snl_init_writer(&h->ss, &nw);
3478 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLEAR_TABLES);
3479
3480 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor);
3481 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name);
3482 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags);
3483 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3484
3485 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3486 return (ENXIO);
3487
3488 seq_id = hdr->nlmsg_seq;
3489
3490 if (!snl_send_message(&h->ss, hdr))
3491 return (ENXIO);
3492
3493 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3494 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel))
3495 continue;
3496 }
3497
3498 return (e.error);
3499 }
3500
3501 static struct snl_attr_parser ap_nadd[] = {
3502 { .type = PF_T_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 },
3503 };
3504 SNL_DECLARE_PARSER(nadd_parser, struct genlmsghdr, snl_f_p_empty, ap_nadd);
3505 int
pfctl_add_table(struct pfctl_handle * h,struct pfr_table * table,int * nadd,int flags)3506 pfctl_add_table(struct pfctl_handle *h, struct pfr_table *table,
3507 int *nadd, int flags)
3508 {
3509 struct snl_writer nw;
3510 struct snl_errmsg_data e = {};
3511 struct nlmsghdr *hdr;
3512 uint32_t seq_id;
3513 int family_id;
3514
3515 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3516 if (family_id == 0)
3517 return (ENOTSUP);
3518
3519 snl_init_writer(&h->ss, &nw);
3520 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_TABLE);
3521
3522 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor);
3523 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name);
3524 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags);
3525 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3526
3527 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3528 return (ENXIO);
3529
3530 seq_id = hdr->nlmsg_seq;
3531
3532 if (!snl_send_message(&h->ss, hdr))
3533 return (ENXIO);
3534
3535 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3536 if (!snl_parse_nlmsg(&h->ss, hdr, &nadd_parser, nadd))
3537 continue;
3538 }
3539
3540 return (e.error);
3541 }
3542
3543 int
pfctl_del_table(struct pfctl_handle * h,struct pfr_table * table,int * ndel,int flags)3544 pfctl_del_table(struct pfctl_handle *h, struct pfr_table *table,
3545 int *ndel, int flags)
3546 {
3547 struct snl_writer nw;
3548 struct snl_errmsg_data e = {};
3549 struct nlmsghdr *hdr;
3550 uint32_t seq_id;
3551 int family_id;
3552
3553 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3554 if (family_id == 0)
3555 return (ENOTSUP);
3556
3557 snl_init_writer(&h->ss, &nw);
3558 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_DEL_TABLE);
3559
3560 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor);
3561 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name);
3562 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags);
3563 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3564
3565 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3566 return (ENXIO);
3567
3568 seq_id = hdr->nlmsg_seq;
3569
3570 if (!snl_send_message(&h->ss, hdr))
3571 return (ENXIO);
3572
3573 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3574 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel))
3575 continue;
3576 }
3577
3578 return (e.error);
3579 }
3580
3581 static bool
snl_attr_get_uint64_into_int_array(struct snl_state * ss,struct nlattr * nla,const void * arg,void * target)3582 snl_attr_get_uint64_into_int_array(struct snl_state *ss, struct nlattr *nla,
3583 const void *arg, void *target)
3584 {
3585 uint64_t *u64target;
3586 struct snl_uint64_array a = {
3587 .count = 0,
3588 .max = (size_t)arg,
3589 };
3590 bool error;
3591
3592 u64target = malloc(a.max * sizeof(uint64_t));
3593 a.array = u64target;
3594
3595 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a);
3596 if (! error)
3597 return (error);
3598
3599 for (size_t i = 0; i < a.count; i++)
3600 ((int *)target)[i] = (int)u64target[i];
3601
3602 free(u64target);
3603
3604 return (true);
3605 }
3606
3607 #define _OUT(_field) offsetof(struct pfr_table, _field)
3608 static const struct snl_attr_parser ap_table[] = {
3609 { .type = PF_T_ANCHOR, .off = _OUT(pfrt_anchor), .arg = (void *)MAXPATHLEN, .cb = snl_attr_copy_string },
3610 { .type = PF_T_NAME, .off = _OUT(pfrt_name), .arg = (void *)PF_TABLE_NAME_SIZE, .cb =snl_attr_copy_string },
3611 { .type = PF_T_TABLE_FLAGS, .off = _OUT(pfrt_flags), .cb = snl_attr_get_uint32 },
3612 };
3613 #undef _OUT
3614 SNL_DECLARE_ATTR_PARSER(table_parser, ap_table);
3615 #define _OUT(_field) offsetof(struct pfr_tstats, _field)
3616 static struct snl_attr_parser ap_tstats[] = {
3617 { .type = PF_TS_TABLE, .off = _OUT(pfrts_t), .arg = &table_parser, .cb = snl_attr_get_nested },
3618 { .type = PF_TS_PACKETS, .off = _OUT(pfrts_packets), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array},
3619 { .type = PF_TS_BYTES, .off = _OUT(pfrts_bytes), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array },
3620 { .type = PF_TS_MATCH, .off = _OUT(pfrts_match), .cb = snl_attr_get_uint64 },
3621 {. type = PF_TS_NOMATCH, .off = _OUT(pfrts_nomatch), .cb = snl_attr_get_uint64 },
3622 { .type = PF_TS_TZERO, .off = _OUT(pfrts_tzero), .cb = snl_attr_get_uint64 },
3623 { .type = PF_TS_CNT, .off = _OUT(pfrts_cnt), .cb = snl_attr_get_uint64 },
3624 { .type = PF_TS_REFCNT, .off = _OUT(pfrts_refcnt), . arg = (void *)PFR_REFCNT_MAX, .cb = snl_attr_get_uint64_into_int_array },
3625 };
3626 #undef _OUT
3627 SNL_DECLARE_PARSER(tstats_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats);
3628
3629 int
pfctl_get_tstats(struct pfctl_handle * h,const struct pfr_table * filter,pfctl_get_tstats_fn fn,void * arg)3630 pfctl_get_tstats(struct pfctl_handle *h, const struct pfr_table *filter,
3631 pfctl_get_tstats_fn fn, void *arg)
3632 {
3633 struct snl_writer nw;
3634 struct snl_errmsg_data e = {};
3635 struct nlmsghdr *hdr;
3636 uint32_t seq_id;
3637 int family_id;
3638 int ret;
3639
3640 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3641 if (family_id == 0)
3642 return (ENOTSUP);
3643
3644 snl_init_writer(&h->ss, &nw);
3645 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TSTATS);
3646
3647 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor);
3648 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name);
3649 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags);
3650
3651 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3652 return (ENXIO);
3653
3654 seq_id = hdr->nlmsg_seq;
3655
3656 if (!snl_send_message(&h->ss, hdr))
3657 return (ENXIO);
3658
3659 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3660 struct pfr_tstats tstats = {};
3661
3662 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_parser, &tstats))
3663 continue;
3664
3665 ret = fn(&tstats, arg);
3666 if (ret != 0)
3667 break;
3668 }
3669
3670 return (e.error);
3671 }
3672
3673 static struct snl_attr_parser ap_tstats_clr[] = {
3674 { .type = PF_TS_NZERO, .off = 0, .cb = snl_attr_get_uint64 },
3675 };
3676 SNL_DECLARE_PARSER(tstats_clr_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats_clr);
3677
3678 int
pfctl_clear_tstats(struct pfctl_handle * h,const struct pfr_table * filter,int * nzero,int flags)3679 pfctl_clear_tstats(struct pfctl_handle *h, const struct pfr_table *filter,
3680 int *nzero, int flags)
3681 {
3682 struct snl_writer nw;
3683 struct snl_errmsg_data e = {};
3684 struct nlmsghdr *hdr;
3685 uint64_t zero;
3686 uint32_t seq_id;
3687 int family_id;
3688
3689 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3690 if (family_id == 0)
3691 return (ENOTSUP);
3692
3693 snl_init_writer(&h->ss, &nw);
3694 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_TSTATS);
3695
3696 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor);
3697 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name);
3698 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags);
3699 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3700
3701 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3702 return (ENXIO);
3703
3704 seq_id = hdr->nlmsg_seq;
3705
3706 if (!snl_send_message(&h->ss, hdr))
3707 return (ENXIO);
3708
3709 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3710 if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_clr_parser, &zero))
3711 continue;
3712 if (nzero)
3713 *nzero = (uint32_t)zero;
3714 }
3715
3716 return (e.error);
3717 }
3718
3719 static struct snl_attr_parser ap_clr_addrs[] = {
3720 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint64 },
3721 };
3722 SNL_DECLARE_PARSER(clr_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_clr_addrs);
3723
3724 int
pfctl_clear_addrs(struct pfctl_handle * h,const struct pfr_table * filter,int * ndel,int flags)3725 pfctl_clear_addrs(struct pfctl_handle *h, const struct pfr_table *filter,
3726 int *ndel, int flags)
3727 {
3728 struct snl_writer nw;
3729 struct snl_errmsg_data e = {};
3730 struct nlmsghdr *hdr;
3731 uint64_t del;
3732 uint32_t seq_id;
3733 int family_id;
3734
3735 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3736 if (family_id == 0)
3737 return (ENOTSUP);
3738
3739 snl_init_writer(&h->ss, &nw);
3740 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_ADDRS);
3741
3742 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor);
3743 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name);
3744 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags);
3745 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3746
3747 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3748 return (ENXIO);
3749
3750 seq_id = hdr->nlmsg_seq;
3751
3752 if (!snl_send_message(&h->ss, hdr))
3753 return (ENXIO);
3754
3755 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3756 if (!snl_parse_nlmsg(&h->ss, hdr, &clr_addrs_parser, &del))
3757 continue;
3758 if (ndel)
3759 *ndel = (uint32_t)del;
3760 }
3761
3762 return (e.error);
3763 }
3764
3765 struct nl_astats {
3766 struct pfr_astats *a;
3767 size_t max;
3768 size_t count;
3769 uint32_t total_count;
3770 uint32_t zeroed;
3771 };
3772
3773 #define _OUT(_field) offsetof(struct pfr_astats, _field)
3774 static const struct snl_attr_parser ap_pfr_astats[] = {
3775 { .type = PF_AS_ADDR , .off = _OUT(pfras_a), .arg = &pfr_addr_parser, .cb = snl_attr_get_nested },
3776 { .type = PF_AS_PACKETS, .off = _OUT(pfras_packets), .arg = (void *)(PFR_DIR_MAX * PFR_OP_ADDR_MAX), .cb = snl_attr_get_uint64_array },
3777 { .type = PF_AS_BYTES, .off = _OUT(pfras_bytes), .arg = (void *)(PFR_DIR_MAX * PFR_OP_ADDR_MAX), .cb = snl_attr_get_uint64_array },
3778 { .type = PF_AS_TZERO, .off = _OUT(pfras_tzero), .cb = snl_attr_get_time_t },
3779 };
3780 #undef _OUT
3781 SNL_DECLARE_ATTR_PARSER(pfr_astats_parser, ap_pfr_astats);
3782
3783 static bool
snl_attr_get_pfr_astats(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)3784 snl_attr_get_pfr_astats(struct snl_state *ss, struct nlattr *nla,
3785 const void *arg __unused, void *target)
3786 {
3787 struct nl_astats *a = (struct nl_astats *)target;
3788 bool ret;
3789
3790 if (a->count >= a->max)
3791 return (false);
3792
3793 ret = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla),
3794 &pfr_astats_parser, &a->a[a->count]);
3795 if (ret)
3796 a->count++;
3797
3798 return (ret);
3799 }
3800
3801 #define _OUT(_field) offsetof(struct nl_astats, _field)
3802 static struct snl_attr_parser ap_table_get_astats[] = {
3803 { .type = PF_TAS_ASTATS, .off = 0, .cb = snl_attr_get_pfr_astats },
3804 { .type = PF_TAS_ASTATS_COUNT, .off = _OUT(total_count), .cb = snl_attr_get_uint32 },
3805 { .type = PF_TAS_ASTATS_ZEROED, .off = _OUT(zeroed), .cb = snl_attr_get_uint32 },
3806 };
3807 #undef _OUT
3808 SNL_DECLARE_PARSER(table_astats_parser, struct genlmsghdr, snl_f_p_empty, ap_table_get_astats);
3809
3810 int
pfctl_get_astats(struct pfctl_handle * h,const struct pfr_table * tbl,struct pfr_astats * as,int * size,int flags)3811 pfctl_get_astats(struct pfctl_handle *h, const struct pfr_table *tbl,
3812 struct pfr_astats *as, int *size, int flags)
3813 {
3814 struct snl_writer nw;
3815 struct snl_errmsg_data e = {};
3816 struct nlmsghdr *hdr;
3817 struct nl_astats out = { 0 };
3818 uint32_t seq_id;
3819 int family_id;
3820
3821 if (tbl == NULL || size == NULL || *size < 0 ||
3822 (*size && as == NULL)) {
3823 errno = EINVAL;
3824 return (-1);
3825 }
3826
3827 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3828 if (family_id == 0)
3829 return (ENOTSUP);
3830
3831 snl_init_writer(&h->ss, &nw);
3832
3833 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_GET_ASTATS);
3834
3835 snl_add_msg_attr_table(&nw, PF_TAS_TABLE, tbl);
3836 snl_add_msg_attr_u32(&nw, PF_TAS_FLAGS, flags);
3837
3838 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3839 return (ENXIO);
3840 seq_id = hdr->nlmsg_seq;
3841
3842 if (! snl_send_message(&h->ss, hdr))
3843 return (ENXIO);
3844
3845 out.a = as;
3846 out.max = *size;
3847
3848 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3849 if (! snl_parse_nlmsg(&h->ss, hdr, &table_astats_parser, &out))
3850 continue;
3851 }
3852
3853 *size = out.total_count;
3854
3855 return (0);
3856 }
3857
3858 static int
_pfctl_clr_astats(struct pfctl_handle * h,const struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * nzero,int flags)3859 _pfctl_clr_astats(struct pfctl_handle *h, const struct pfr_table *tbl,
3860 struct pfr_addr *addrs, int size, int *nzero, int flags)
3861 {
3862 struct snl_writer nw;
3863 struct snl_errmsg_data e = {};
3864 struct nlmsghdr *hdr;
3865 uint32_t seq_id;
3866 struct nl_astats attrs;
3867 int family_id;
3868
3869 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3870 if (family_id == 0)
3871 return (ENOTSUP);
3872
3873 snl_init_writer(&h->ss, &nw);
3874 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_CLEAR_ASTATS);
3875
3876 snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl);
3877 snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags);
3878 for (int i = 0; i < size; i++)
3879 snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]);
3880
3881 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3882 return (ENXIO);
3883 seq_id = hdr->nlmsg_seq;
3884
3885 if (! snl_send_message(&h->ss, hdr))
3886 return (ENXIO);
3887
3888 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3889 if (! snl_parse_nlmsg(&h->ss, hdr, &table_astats_parser, &attrs))
3890 continue;
3891 }
3892
3893 if (nzero)
3894 *nzero = attrs.zeroed;
3895
3896 return (e.error);
3897 }
3898
3899 int
pfctl_clr_astats(struct pfctl_handle * h,const struct pfr_table * tbl,struct pfr_addr * addrs,int size,int * nzero,int flags)3900 pfctl_clr_astats(struct pfctl_handle *h, const struct pfr_table *tbl,
3901 struct pfr_addr *addrs, int size, int *nzero, int flags)
3902 {
3903 int ret;
3904 int off = 0;
3905 int partial_zeroed;
3906 int chunk_size;
3907
3908 do {
3909 chunk_size = MIN(size - off, 256);
3910 ret = _pfctl_clr_astats(h, tbl, &addrs[off], chunk_size,
3911 &partial_zeroed, flags);
3912 if (ret != 0)
3913 break;
3914 if (nzero)
3915 *nzero += partial_zeroed;
3916 off += chunk_size;
3917 } while (off < size);
3918
3919 return (ret);
3920 }
3921
3922 static void
snl_add_msg_attr_limit_rate(struct snl_writer * nw,uint32_t type,const struct pfctl_limit_rate * rate)3923 snl_add_msg_attr_limit_rate(struct snl_writer *nw, uint32_t type,
3924 const struct pfctl_limit_rate *rate)
3925 {
3926 int off;
3927
3928 off = snl_add_msg_attr_nested(nw, type);
3929
3930 snl_add_msg_attr_u32(nw, PF_LR_LIMIT, rate->limit);
3931 snl_add_msg_attr_u32(nw, PF_LR_SECONDS, rate->seconds);
3932
3933 snl_end_attr_nested(nw, off);
3934 }
3935
3936 #define _OUT(_field) offsetof(struct pfctl_limit_rate, _field)
3937 static const struct snl_attr_parser ap_limit_rate[] = {
3938 { .type = PF_LR_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
3939 { .type = PF_LR_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
3940 };
3941 SNL_DECLARE_ATTR_PARSER(limit_rate_parser, ap_limit_rate);
3942 #undef _OUT
3943
3944 #define _OUT(_field) offsetof(struct pfctl_state_lim, _field)
3945 static struct snl_attr_parser ap_statelim[] = {
3946 { .type = PF_SL_NAME, .off = _OUT(name), .arg_u32 = PF_STATELIM_NAME_LEN, .cb = snl_attr_copy_string },
3947 { .type = PF_SL_ID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
3948 { .type = PF_SL_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
3949 { .type = PF_SL_RATE, .off = _OUT(rate), .arg = &limit_rate_parser, .cb = snl_attr_get_nested },
3950 { .type = PF_SL_DESCR, .off = _OUT(description), .arg_u32 = PF_STATELIM_DESCR_LEN, .cb = snl_attr_copy_string },
3951 { .type = PF_SL_INUSE, .off = _OUT(inuse), .cb = snl_attr_get_uint32 },
3952 { .type = PF_SL_ADMITTED, .off = _OUT(admitted), .cb = snl_attr_get_uint64 },
3953 { .type = PF_SL_HARDLIMITED, .off = _OUT(hardlimited), .cb = snl_attr_get_uint64 },
3954 { .type = PF_SL_RATELIMITED, .off = _OUT(ratelimited), .cb = snl_attr_get_uint64 },
3955 };
3956 #undef _OUT
3957 SNL_DECLARE_PARSER(statelim_parser, struct genlmsghdr, snl_f_p_empty, ap_statelim);
3958
3959 int
pfctl_state_limiter_nget(struct pfctl_handle * h,struct pfctl_state_lim * lim)3960 pfctl_state_limiter_nget(struct pfctl_handle *h, struct pfctl_state_lim *lim)
3961 {
3962 struct snl_writer nw;
3963 struct snl_errmsg_data e = {};
3964 struct nlmsghdr *hdr;
3965 uint32_t seq_id;
3966 int family_id;
3967
3968 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3969 if (family_id == 0)
3970 return (ENOTSUP);
3971
3972 snl_init_writer(&h->ss, &nw);
3973 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_STATE_LIMITER_NGET);
3974
3975 snl_add_msg_attr_u32(&nw, PF_SL_ID, lim->id);
3976
3977 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3978 return (ENXIO);
3979 seq_id = hdr->nlmsg_seq;
3980
3981 if (! snl_send_message(&h->ss, hdr))
3982 return (ENXIO);
3983
3984 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3985 if (! snl_parse_nlmsg(&h->ss, hdr, &statelim_parser, lim))
3986 continue;
3987 }
3988
3989 return (e.error);
3990 }
3991
3992 int
pfctl_state_limiter_add(struct pfctl_handle * h,struct pfctl_state_lim * lim)3993 pfctl_state_limiter_add(struct pfctl_handle *h, struct pfctl_state_lim *lim)
3994 {
3995 struct snl_writer nw;
3996 struct snl_errmsg_data e = {};
3997 struct nlmsghdr *hdr;
3998 uint32_t seq_id;
3999 int family_id;
4000
4001 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4002 if (family_id == 0)
4003 return (ENOTSUP);
4004
4005 snl_init_writer(&h->ss, &nw);
4006 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_STATE_LIMITER_ADD);
4007
4008 snl_add_msg_attr_u32(&nw, PF_SL_ID, lim->id);
4009 snl_add_msg_attr_u32(&nw, PF_SL_TICKET, lim->ticket);
4010 snl_add_msg_attr_string(&nw, PF_SL_NAME, lim->name);
4011 snl_add_msg_attr_u32(&nw, PF_SL_LIMIT, lim->limit);
4012 snl_add_msg_attr_limit_rate(&nw, PF_SL_RATE, &lim->rate);
4013 snl_add_msg_attr_string(&nw, PF_SL_DESCR, lim->description);
4014
4015 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4016 return (ENXIO);
4017 seq_id = hdr->nlmsg_seq;
4018
4019 if (! snl_send_message(&h->ss, hdr))
4020 return (ENXIO);
4021
4022 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4023 if (! snl_parse_nlmsg(&h->ss, hdr, &statelim_parser, &lim))
4024 continue;
4025 }
4026
4027 return (e.error);
4028 }
4029
4030 #define _OUT(_field) offsetof(struct pfctl_source_lim, _field)
4031 static struct snl_attr_parser ap_sourcelim[] = {
4032 { .type = PF_SCL_NAME, .off = _OUT(name), .arg_u32 = PF_SOURCELIM_NAME_LEN, .cb = snl_attr_copy_string },
4033 { .type = PF_SCL_ID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
4034 { .type = PF_SCL_ENTRIES, .off = _OUT(entries), .cb = snl_attr_get_uint32 },
4035 { .type = PF_SCL_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
4036 { .type = PF_SCL_RATE, .off = _OUT(rate), .arg = &limit_rate_parser, .cb = snl_attr_get_nested },
4037 { .type = PF_SCL_OVERLOAD_TBL_NAME, .off = _OUT(overload_tblname), .arg_u32 = PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
4038 { .type = PF_SCL_OVERLOAD_HIGH_WM, .off = _OUT(overload_hwm), .cb = snl_attr_get_uint32 },
4039 { .type = PF_SCL_OVERLOAD_LOW_WM, .off = _OUT(overload_lwm), .cb = snl_attr_get_uint32 },
4040 { .type = PF_SCL_INET_PREFIX, .off = _OUT(inet_prefix), .cb = snl_attr_get_uint32 },
4041 { .type = PF_SCL_INET6_PREFIX, .off = _OUT(inet6_prefix), .cb = snl_attr_get_uint32 },
4042 { .type = PF_SCL_DESCR, .off = _OUT(description), .arg_u32 = PF_SOURCELIM_DESCR_LEN, .cb = snl_attr_copy_string },
4043 { .type = PF_SCL_NENTRIES, .off = _OUT(nentries), .cb = snl_attr_get_uint32 },
4044 { .type = PF_SCL_INUSE, .off = _OUT(inuse), .cb = snl_attr_get_uint32 },
4045 { .type = PF_SCL_ADDR_ALLOCS, .off = _OUT(addrallocs), .cb = snl_attr_get_uint64 },
4046 { .type = PF_SCL_ADDR_NOMEM, .off = _OUT(addrnomem), .cb = snl_attr_get_uint64 },
4047 { .type = PF_SCL_ADMITTED, .off = _OUT(admitted), .cb = snl_attr_get_uint64 },
4048 { .type = PF_SCL_ADDRLIMITED, .off = _OUT(addrlimited), .cb = snl_attr_get_uint64 },
4049 { .type = PF_SCL_HARDLIMITED, .off = _OUT(hardlimited), .cb = snl_attr_get_uint64 },
4050 { .type = PF_SCL_RATELIMITED, .off = _OUT(ratelimited), .cb = snl_attr_get_uint64 },
4051 };
4052 #undef _OUT
4053 SNL_DECLARE_PARSER(sourcelim_parser, struct genlmsghdr, snl_f_p_empty, ap_sourcelim);
4054
4055 int
pfctl_source_limiter_add(struct pfctl_handle * h,struct pfctl_source_lim * lim)4056 pfctl_source_limiter_add(struct pfctl_handle *h, struct pfctl_source_lim *lim)
4057 {
4058 struct snl_writer nw;
4059 struct snl_errmsg_data e = {};
4060 struct nlmsghdr *hdr;
4061 uint32_t seq_id;
4062 int family_id;
4063
4064 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4065 if (family_id == 0)
4066 return (ENOTSUP);
4067
4068 snl_init_writer(&h->ss, &nw);
4069 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SOURCE_LIMITER_ADD);
4070
4071 snl_add_msg_attr_u32(&nw, PF_SCL_TICKET, lim->ticket);
4072 snl_add_msg_attr_string(&nw, PF_SCL_NAME, lim->name);
4073 snl_add_msg_attr_u32(&nw, PF_SCL_ID, lim->id);
4074 snl_add_msg_attr_u32(&nw, PF_SCL_ENTRIES, lim->entries);
4075 snl_add_msg_attr_u32(&nw, PF_SCL_LIMIT, lim->limit);
4076 snl_add_msg_attr_limit_rate(&nw, PF_SCL_RATE, &lim->rate);
4077 snl_add_msg_attr_string(&nw, PF_SCL_OVERLOAD_TBL_NAME, lim->overload_tblname);
4078 snl_add_msg_attr_u32(&nw, PF_SCL_OVERLOAD_HIGH_WM, lim->overload_hwm);
4079 snl_add_msg_attr_u32(&nw, PF_SCL_OVERLOAD_LOW_WM, lim->overload_lwm);
4080 snl_add_msg_attr_u32(&nw, PF_SCL_INET_PREFIX, lim->inet_prefix);
4081 snl_add_msg_attr_u32(&nw, PF_SCL_INET6_PREFIX, lim->inet6_prefix);
4082 snl_add_msg_attr_string(&nw, PF_SCL_DESCR, lim->description);
4083
4084 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4085 return (ENXIO);
4086 seq_id = hdr->nlmsg_seq;
4087
4088 if (! snl_send_message(&h->ss, hdr))
4089 return (ENXIO);
4090
4091 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4092 if (! snl_parse_nlmsg(&h->ss, hdr, &sourcelim_parser, &lim))
4093 continue;
4094 }
4095
4096 return (e.error);
4097 }
4098
4099 static int
_pfctl_source_limiter_get(struct pfctl_handle * h,int cmd,struct pfctl_source_lim * lim)4100 _pfctl_source_limiter_get(struct pfctl_handle *h, int cmd, struct pfctl_source_lim *lim)
4101 {
4102 struct snl_writer nw;
4103 struct snl_errmsg_data e = {};
4104 struct nlmsghdr *hdr;
4105 uint32_t seq_id;
4106 int family_id;
4107
4108 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4109 if (family_id == 0)
4110 return (ENOTSUP);
4111
4112 snl_init_writer(&h->ss, &nw);
4113 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
4114
4115 snl_add_msg_attr_u32(&nw, PF_SCL_ID, lim->id);
4116
4117 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4118 return (ENXIO);
4119 seq_id = hdr->nlmsg_seq;
4120
4121 if (! snl_send_message(&h->ss, hdr))
4122 return (ENXIO);
4123
4124 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4125 if (! snl_parse_nlmsg(&h->ss, hdr, &sourcelim_parser, lim))
4126 continue;
4127 }
4128
4129 return (e.error);
4130 }
4131
4132 int
pfctl_source_limiter_get(struct pfctl_handle * h,struct pfctl_source_lim * lim)4133 pfctl_source_limiter_get(struct pfctl_handle *h, struct pfctl_source_lim *lim)
4134 {
4135 return (_pfctl_source_limiter_get(h, PFNL_CMD_SOURCE_LIMITER_GET, lim));
4136 }
4137
4138 int
pfctl_source_limiter_nget(struct pfctl_handle * h,struct pfctl_source_lim * lim)4139 pfctl_source_limiter_nget(struct pfctl_handle *h, struct pfctl_source_lim *lim)
4140 {
4141 return (_pfctl_source_limiter_get(h, PFNL_CMD_SOURCE_LIMITER_NGET, lim));
4142 }
4143
4144 #define _OUT(_field) offsetof(struct pfctl_source, _field)
4145 static struct snl_attr_parser ap_source[] = {
4146 { .type = PF_SRC_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
4147 { .type = PF_SRC_RDOMAIN, .off = _OUT(rdomain), .cb = snl_attr_get_uint32 },
4148 { .type = PF_SRC_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr },
4149 { .type = PF_SRC_INUSE, .off = _OUT(inuse), .cb = snl_attr_get_uint32 },
4150 { .type = PF_SRC_ADMITTED, .off = _OUT(admitted), .cb = snl_attr_get_uint64 },
4151 { .type = PF_SRC_HARDLIMITED, .off = _OUT(hardlimited), .cb = snl_attr_get_uint64 },
4152 { .type = PF_SRC_RATELIMITED, .off = _OUT(ratelimited), .cb = snl_attr_get_uint64 },
4153 { .type = PF_SRC_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
4154 { .type = PF_SRC_INET_PREFIX, .off = _OUT(inet_prefix), .cb = snl_attr_get_uint32 },
4155 {. type = PF_SRC_INET6_PREFIX, .off = _OUT(inet6_prefix), .cb = snl_attr_get_uint32 },
4156 };
4157 #undef _OUT
4158 SNL_DECLARE_PARSER(source_parser, struct genlmsghdr, snl_f_p_empty, ap_source);
4159
4160 int
pfctl_source_get(struct pfctl_handle * h,int id,pfctl_get_source_fn fn,void * arg)4161 pfctl_source_get(struct pfctl_handle *h, int id, pfctl_get_source_fn fn, void *arg)
4162 {
4163 struct snl_writer nw;
4164 struct snl_errmsg_data e = {};
4165 struct nlmsghdr *hdr;
4166 uint32_t seq_id;
4167 int family_id, error;
4168
4169 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4170 if (family_id == 0)
4171 return (ENOTSUP);
4172
4173 snl_init_writer(&h->ss, &nw);
4174 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SOURCE_NGET);
4175
4176 snl_add_msg_attr_u32(&nw, PF_SRC_ID, id);
4177
4178 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4179 return (ENXIO);
4180 seq_id = hdr->nlmsg_seq;
4181
4182 if (! snl_send_message(&h->ss, hdr))
4183 return (ENXIO);
4184
4185 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4186 struct pfctl_source src;
4187
4188 if (! snl_parse_nlmsg(&h->ss, hdr, &source_parser, &src))
4189 continue;
4190
4191 error = fn(&src, arg);
4192 if (error != 0) {
4193 e.error = error;
4194 break;
4195 }
4196 }
4197
4198 return (e.error);
4199 }
4200
4201 int
pfctl_source_clear(struct pfctl_handle * h,struct pfctl_source_clear * kill)4202 pfctl_source_clear(struct pfctl_handle *h, struct pfctl_source_clear *kill)
4203 {
4204 struct snl_writer nw;
4205 struct snl_errmsg_data e = {};
4206 struct nlmsghdr *hdr;
4207 uint32_t seq_id;
4208 int family_id;
4209
4210 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
4211 if (family_id == 0)
4212 return (ENOTSUP);
4213
4214 snl_init_writer(&h->ss, &nw);
4215 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SOURCE_CLEAR);
4216
4217 snl_add_msg_attr_string(&nw, PF_SC_NAME, kill->name);
4218 snl_add_msg_attr_u32(&nw, PF_SC_ID, kill->id);
4219 snl_add_msg_attr_u32(&nw, PF_SC_RDOMAIN, kill->rdomain);
4220 snl_add_msg_attr_u8(&nw, PF_SC_AF, kill->af);
4221 snl_add_msg_attr_ip6(&nw, PF_SC_ADDR, &kill->addr.v6);
4222
4223 if ((hdr = snl_finalize_msg(&nw)) == NULL)
4224 return (ENXIO);
4225 seq_id = hdr->nlmsg_seq;
4226
4227 if (! snl_send_message(&h->ss, hdr))
4228 return (ENXIO);
4229
4230 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
4231 }
4232
4233 return (e.error);
4234 }
4235
4236