1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2021 Rubicon Communications, LLC (Netgate)
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33
34 #include <sys/ioctl.h>
35 #include <sys/nv.h>
36 #include <sys/queue.h>
37 #include <sys/types.h>
38
39 #include <net/if.h>
40 #include <net/pfvar.h>
41 #include <netinet/in.h>
42
43 #include <netpfil/pf/pf_nl.h>
44 #include <netlink/netlink.h>
45 #include <netlink/netlink_generic.h>
46 #include <netlink/netlink_snl.h>
47 #include <netlink/netlink_snl_generic.h>
48 #include <netlink/netlink_snl_route.h>
49
50 #include <assert.h>
51 #include <err.h>
52 #include <errno.h>
53 #include <fcntl.h>
54 #include <stdlib.h>
55 #include <string.h>
56
57 #include "libpfctl.h"
58
59 struct pfctl_handle {
60 int fd;
61 struct snl_state ss;
62 };
63
64 const char* PFCTL_SYNCOOKIES_MODE_NAMES[] = {
65 "never",
66 "always",
67 "adaptive"
68 };
69
70 static int _pfctl_clear_states(int , const struct pfctl_kill *,
71 unsigned int *, uint64_t);
72
73 struct pfctl_handle *
pfctl_open(const char * pf_device)74 pfctl_open(const char *pf_device)
75 {
76 struct pfctl_handle *h;
77
78 h = calloc(1, sizeof(struct pfctl_handle));
79 h->fd = -1;
80
81 h->fd = open(pf_device, O_RDWR);
82 if (h->fd < 0)
83 goto error;
84
85 if (!snl_init(&h->ss, NETLINK_GENERIC))
86 goto error;
87
88 return (h);
89 error:
90 close(h->fd);
91 snl_free(&h->ss);
92 free(h);
93
94 return (NULL);
95 }
96
97 void
pfctl_close(struct pfctl_handle * h)98 pfctl_close(struct pfctl_handle *h)
99 {
100 close(h->fd);
101 snl_free(&h->ss);
102 free(h);
103 }
104
105 int
pfctl_fd(struct pfctl_handle * h)106 pfctl_fd(struct pfctl_handle *h)
107 {
108 return (h->fd);
109 }
110
111 static int
pfctl_do_netlink_cmd(struct pfctl_handle * h,uint cmd)112 pfctl_do_netlink_cmd(struct pfctl_handle *h, uint cmd)
113 {
114 struct snl_errmsg_data e = {};
115 struct snl_writer nw;
116 struct nlmsghdr *hdr;
117 uint32_t seq_id;
118 int family_id;
119
120 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
121 if (family_id == 0)
122 return (ENOTSUP);
123
124 snl_init_writer(&h->ss, &nw);
125 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
126
127 hdr = snl_finalize_msg(&nw);
128 if (hdr == NULL)
129 return (ENOMEM);
130 seq_id = hdr->nlmsg_seq;
131
132 snl_send_message(&h->ss, hdr);
133
134 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
135 }
136
137 return (e.error);
138 }
139
140 static int
pfctl_do_ioctl(int dev,uint cmd,size_t size,nvlist_t ** nvl)141 pfctl_do_ioctl(int dev, uint cmd, size_t size, nvlist_t **nvl)
142 {
143 struct pfioc_nv nv;
144 void *data;
145 size_t nvlen;
146 int ret;
147
148 data = nvlist_pack(*nvl, &nvlen);
149 if (nvlen > size)
150 size = nvlen;
151
152 retry:
153 nv.data = malloc(size);
154 if (nv.data == NULL) {
155 ret = ENOMEM;
156 goto out;
157 }
158
159 memcpy(nv.data, data, nvlen);
160
161 nv.len = nvlen;
162 nv.size = size;
163
164 ret = ioctl(dev, cmd, &nv);
165 if (ret == -1 && errno == ENOSPC) {
166 size *= 2;
167 free(nv.data);
168 goto retry;
169 }
170
171 nvlist_destroy(*nvl);
172 *nvl = NULL;
173
174 if (ret == 0) {
175 *nvl = nvlist_unpack(nv.data, nv.len, 0);
176 if (*nvl == NULL) {
177 ret = EIO;
178 goto out;
179 }
180 } else {
181 ret = errno;
182 }
183
184 out:
185 free(data);
186 free(nv.data);
187
188 return (ret);
189 }
190
191 static void
pf_nvuint_8_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint8_t * numbers,size_t * nelems)192 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems,
193 uint8_t *numbers, size_t *nelems)
194 {
195 const uint64_t *tmp;
196 size_t elems;
197
198 tmp = nvlist_get_number_array(nvl, name, &elems);
199 assert(elems <= maxelems);
200
201 for (size_t i = 0; i < elems; i++)
202 numbers[i] = tmp[i];
203
204 if (nelems)
205 *nelems = elems;
206 }
207
208 static void
pf_nvuint_16_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint16_t * numbers,size_t * nelems)209 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems,
210 uint16_t *numbers, size_t *nelems)
211 {
212 const uint64_t *tmp;
213 size_t elems;
214
215 tmp = nvlist_get_number_array(nvl, name, &elems);
216 assert(elems <= maxelems);
217
218 for (size_t i = 0; i < elems; i++)
219 numbers[i] = tmp[i];
220
221 if (nelems)
222 *nelems = elems;
223 }
224
225 static void
pf_nvuint_32_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint32_t * numbers,size_t * nelems)226 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems,
227 uint32_t *numbers, size_t *nelems)
228 {
229 const uint64_t *tmp;
230 size_t elems;
231
232 tmp = nvlist_get_number_array(nvl, name, &elems);
233
234 for (size_t i = 0; i < elems && i < maxelems; i++)
235 numbers[i] = tmp[i];
236
237 if (nelems)
238 *nelems = elems;
239 }
240
241 static void
pf_nvuint_64_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint64_t * numbers,size_t * nelems)242 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems,
243 uint64_t *numbers, size_t *nelems)
244 {
245 const uint64_t *tmp;
246 size_t elems;
247
248 tmp = nvlist_get_number_array(nvl, name, &elems);
249 assert(elems <= maxelems);
250
251 for (size_t i = 0; i < elems; i++)
252 numbers[i] = tmp[i];
253
254 if (nelems)
255 *nelems = elems;
256 }
257
258 int
pfctl_startstop(struct pfctl_handle * h,int start)259 pfctl_startstop(struct pfctl_handle *h, int start)
260 {
261 return (pfctl_do_netlink_cmd(h, start ? PFNL_CMD_START : PFNL_CMD_STOP));
262 }
263
264 static void
_pfctl_get_status_counters(const nvlist_t * nvl,struct pfctl_status_counters * counters)265 _pfctl_get_status_counters(const nvlist_t *nvl,
266 struct pfctl_status_counters *counters)
267 {
268 const uint64_t *ids, *counts;
269 const char *const *names;
270 size_t id_len, counter_len, names_len;
271
272 ids = nvlist_get_number_array(nvl, "ids", &id_len);
273 counts = nvlist_get_number_array(nvl, "counters", &counter_len);
274 names = nvlist_get_string_array(nvl, "names", &names_len);
275 assert(id_len == counter_len);
276 assert(counter_len == names_len);
277
278 TAILQ_INIT(counters);
279
280 for (size_t i = 0; i < id_len; i++) {
281 struct pfctl_status_counter *c;
282
283 c = malloc(sizeof(*c));
284 if (c == NULL)
285 continue;
286
287 c->id = ids[i];
288 c->counter = counts[i];
289 c->name = strdup(names[i]);
290
291 TAILQ_INSERT_TAIL(counters, c, entry);
292 }
293 }
294
295 #define _OUT(_field) offsetof(struct pfctl_status_counter, _field)
296 static const struct snl_attr_parser ap_counter[] = {
297 { .type = PF_C_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_uint64 },
298 { .type = PF_C_NAME, .off = _OUT(name), .cb = snl_attr_get_string },
299 { .type = PF_C_ID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
300 };
301 SNL_DECLARE_ATTR_PARSER(counter_parser, ap_counter);
302 #undef _OUT
303
304 static bool
snl_attr_get_counters(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)305 snl_attr_get_counters(struct snl_state *ss, struct nlattr *nla,
306 const void *arg __unused, void *target)
307 {
308 struct pfctl_status_counter counter = {};
309 struct pfctl_status_counter *c;
310 bool error;
311
312 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &counter_parser, &counter);
313 if (! error)
314 return (error);
315
316 c = malloc(sizeof(*c));
317 if (c == NULL)
318 return (false);
319
320 c->id = counter.id;
321 c->counter = counter.counter;
322 c->name = strdup(counter.name);
323
324 TAILQ_INSERT_TAIL((struct pfctl_status_counters *)target, c, entry);
325
326 return (error);
327 }
328
329 struct snl_uint64_array {
330 uint64_t *array;
331 size_t count;
332 size_t max;
333 };
334 static bool
snl_attr_get_uint64_element(struct snl_state * ss,struct nlattr * nla,const void * arg,void * target)335 snl_attr_get_uint64_element(struct snl_state *ss, struct nlattr *nla,
336 const void *arg, void *target)
337 {
338 bool error;
339 uint64_t value;
340 struct snl_uint64_array *t = (struct snl_uint64_array *)target;
341
342 if (t->count >= t->max)
343 return (false);
344
345 error = snl_attr_get_uint64(ss, nla, arg, &value);
346 if (! error)
347 return (error);
348
349 t->array[t->count++] = value;
350
351 return (true);
352 }
353
354 static const struct snl_attr_parser ap_array[] = {
355 { .cb = snl_attr_get_uint64_element },
356 };
357 SNL_DECLARE_ATTR_PARSER(array_parser, ap_array);
358 static bool
snl_attr_get_uint64_array(struct snl_state * ss,struct nlattr * nla,const void * arg,void * target)359 snl_attr_get_uint64_array(struct snl_state *ss, struct nlattr *nla,
360 const void *arg, void *target)
361 {
362 struct snl_uint64_array a = {
363 .array = target,
364 .count = 0,
365 .max = (size_t)arg,
366 };
367 bool error;
368
369 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a);
370 if (! error)
371 return (error);
372
373 return (true);
374 }
375
376 #define _OUT(_field) offsetof(struct pfctl_status, _field)
377 static const struct snl_attr_parser ap_getstatus[] = {
378 { .type = PF_GS_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
379 { .type = PF_GS_RUNNING, .off = _OUT(running), .cb = snl_attr_get_bool },
380 { .type = PF_GS_SINCE, .off = _OUT(since), .cb = snl_attr_get_uint32 },
381 { .type = PF_GS_DEBUG, .off = _OUT(debug), .cb = snl_attr_get_uint32 },
382 { .type = PF_GS_HOSTID, .off = _OUT(hostid), .cb = snl_attr_get_uint32 },
383 { .type = PF_GS_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
384 { .type = PF_GS_SRC_NODES, .off = _OUT(src_nodes), .cb = snl_attr_get_uint32 },
385 { .type = PF_GS_REASSEMBLE, .off = _OUT(reass), .cb = snl_attr_get_uint32 },
386 { .type = PF_GS_SYNCOOKIES_ACTIVE, .off = _OUT(syncookies_active), .cb = snl_attr_get_uint32 },
387 { .type = PF_GS_COUNTERS, .off = _OUT(counters), .cb = snl_attr_get_counters },
388 { .type = PF_GS_LCOUNTERS, .off = _OUT(lcounters), .cb = snl_attr_get_counters },
389 { .type = PF_GS_FCOUNTERS, .off = _OUT(fcounters), .cb = snl_attr_get_counters },
390 { .type = PF_GS_SCOUNTERS, .off = _OUT(scounters), .cb = snl_attr_get_counters },
391 { .type = PF_GS_CHKSUM, .off = _OUT(pf_chksum), .arg_u32 = PF_MD5_DIGEST_LENGTH, .cb = snl_attr_get_bytes },
392 { .type = PF_GS_BCOUNTERS, .off = _OUT(bcounters), .arg_u32 = 2 * 2, .cb = snl_attr_get_uint64_array },
393 { .type = PF_GS_PCOUNTERS, .off = _OUT(pcounters), .arg_u32 = 2 * 2 * 2, .cb = snl_attr_get_uint64_array },
394 };
395 SNL_DECLARE_PARSER(getstatus_parser, struct genlmsghdr, snl_f_p_empty, ap_getstatus);
396 #undef _OUT
397
398 struct pfctl_status *
pfctl_get_status_h(struct pfctl_handle * h __unused)399 pfctl_get_status_h(struct pfctl_handle *h __unused)
400 {
401 struct pfctl_status *status;
402 struct snl_errmsg_data e = {};
403 struct nlmsghdr *hdr;
404 struct snl_writer nw;
405 uint32_t seq_id;
406 int family_id;
407
408 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
409 if (family_id == 0)
410 return (NULL);
411
412 snl_init_writer(&h->ss, &nw);
413 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_STATUS);
414 hdr->nlmsg_flags |= NLM_F_DUMP;
415
416 hdr = snl_finalize_msg(&nw);
417 if (hdr == NULL) {
418 return (NULL);
419 }
420
421 seq_id = hdr->nlmsg_seq;
422 if (! snl_send_message(&h->ss, hdr))
423 return (NULL);
424
425 status = calloc(1, sizeof(*status));
426 if (status == NULL)
427 return (NULL);
428 TAILQ_INIT(&status->counters);
429 TAILQ_INIT(&status->lcounters);
430 TAILQ_INIT(&status->fcounters);
431 TAILQ_INIT(&status->scounters);
432
433 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
434 if (! snl_parse_nlmsg(&h->ss, hdr, &getstatus_parser, status))
435 continue;
436 }
437
438 return (status);
439 }
440
441 struct pfctl_status *
pfctl_get_status(int dev)442 pfctl_get_status(int dev)
443 {
444 struct pfctl_status *status;
445 nvlist_t *nvl;
446 size_t len;
447 const void *chksum;
448
449 status = calloc(1, sizeof(*status));
450 if (status == NULL)
451 return (NULL);
452
453 nvl = nvlist_create(0);
454
455 if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) {
456 nvlist_destroy(nvl);
457 free(status);
458 return (NULL);
459 }
460
461 status->running = nvlist_get_bool(nvl, "running");
462 status->since = nvlist_get_number(nvl, "since");
463 status->debug = nvlist_get_number(nvl, "debug");
464 status->hostid = ntohl(nvlist_get_number(nvl, "hostid"));
465 status->states = nvlist_get_number(nvl, "states");
466 status->src_nodes = nvlist_get_number(nvl, "src_nodes");
467 status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active");
468 status->reass = nvlist_get_number(nvl, "reass");
469
470 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"),
471 IFNAMSIZ);
472 chksum = nvlist_get_binary(nvl, "chksum", &len);
473 assert(len == PF_MD5_DIGEST_LENGTH);
474 memcpy(status->pf_chksum, chksum, len);
475
476 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"),
477 &status->counters);
478 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"),
479 &status->lcounters);
480 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"),
481 &status->fcounters);
482 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"),
483 &status->scounters);
484
485 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2,
486 (uint64_t *)status->pcounters, NULL);
487 pf_nvuint_64_array(nvl, "bcounters", 2 * 2,
488 (uint64_t *)status->bcounters, NULL);
489
490 nvlist_destroy(nvl);
491
492 return (status);
493 }
494 int
pfctl_clear_status(struct pfctl_handle * h)495 pfctl_clear_status(struct pfctl_handle *h)
496 {
497 return (pfctl_do_netlink_cmd(h, PFNL_CMD_CLEAR_STATUS));
498 }
499
500 static uint64_t
_pfctl_status_counter(struct pfctl_status_counters * counters,uint64_t id)501 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id)
502 {
503 struct pfctl_status_counter *c;
504
505 TAILQ_FOREACH(c, counters, entry) {
506 if (c->id == id)
507 return (c->counter);
508 }
509
510 return (0);
511 }
512
513 uint64_t
pfctl_status_counter(struct pfctl_status * status,int id)514 pfctl_status_counter(struct pfctl_status *status, int id)
515 {
516 return (_pfctl_status_counter(&status->counters, id));
517 }
518
519 uint64_t
pfctl_status_lcounter(struct pfctl_status * status,int id)520 pfctl_status_lcounter(struct pfctl_status *status, int id)
521 {
522 return (_pfctl_status_counter(&status->lcounters, id));
523 }
524
525 uint64_t
pfctl_status_fcounter(struct pfctl_status * status,int id)526 pfctl_status_fcounter(struct pfctl_status *status, int id)
527 {
528 return (_pfctl_status_counter(&status->fcounters, id));
529 }
530
531 uint64_t
pfctl_status_scounter(struct pfctl_status * status,int id)532 pfctl_status_scounter(struct pfctl_status *status, int id)
533 {
534 return (_pfctl_status_counter(&status->scounters, id));
535 }
536
537 void
pfctl_free_status(struct pfctl_status * status)538 pfctl_free_status(struct pfctl_status *status)
539 {
540 struct pfctl_status_counter *c, *tmp;
541
542 if (status == NULL)
543 return;
544
545 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) {
546 free(c->name);
547 free(c);
548 }
549 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) {
550 free(c->name);
551 free(c);
552 }
553 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) {
554 free(c->name);
555 free(c);
556 }
557 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) {
558 free(c->name);
559 free(c);
560 }
561
562 free(status);
563 }
564
565 static void
pfctl_nv_add_addr(nvlist_t * nvparent,const char * name,const struct pf_addr * addr)566 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name,
567 const struct pf_addr *addr)
568 {
569 nvlist_t *nvl = nvlist_create(0);
570
571 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr));
572
573 nvlist_add_nvlist(nvparent, name, nvl);
574 nvlist_destroy(nvl);
575 }
576
577 static void
pf_nvaddr_to_addr(const nvlist_t * nvl,struct pf_addr * addr)578 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr)
579 {
580 size_t len;
581 const void *data;
582
583 data = nvlist_get_binary(nvl, "addr", &len);
584 assert(len == sizeof(struct pf_addr));
585 memcpy(addr, data, len);
586 }
587
588 static void
pfctl_nv_add_addr_wrap(nvlist_t * nvparent,const char * name,const struct pf_addr_wrap * addr)589 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name,
590 const struct pf_addr_wrap *addr)
591 {
592 nvlist_t *nvl = nvlist_create(0);
593
594 nvlist_add_number(nvl, "type", addr->type);
595 nvlist_add_number(nvl, "iflags", addr->iflags);
596 if (addr->type == PF_ADDR_DYNIFTL)
597 nvlist_add_string(nvl, "ifname", addr->v.ifname);
598 if (addr->type == PF_ADDR_TABLE)
599 nvlist_add_string(nvl, "tblname", addr->v.tblname);
600 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr);
601 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask);
602
603 nvlist_add_nvlist(nvparent, name, nvl);
604 nvlist_destroy(nvl);
605 }
606
607 static void
pf_nvaddr_wrap_to_addr_wrap(const nvlist_t * nvl,struct pf_addr_wrap * addr)608 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr)
609 {
610 bzero(addr, sizeof(*addr));
611
612 addr->type = nvlist_get_number(nvl, "type");
613 addr->iflags = nvlist_get_number(nvl, "iflags");
614 if (addr->type == PF_ADDR_DYNIFTL) {
615 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"),
616 IFNAMSIZ);
617 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt");
618 }
619 if (addr->type == PF_ADDR_TABLE) {
620 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"),
621 PF_TABLE_NAME_SIZE);
622 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt");
623 }
624
625 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr);
626 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask);
627 }
628
629 static void
pfctl_nv_add_rule_addr(nvlist_t * nvparent,const char * name,const struct pf_rule_addr * addr)630 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name,
631 const struct pf_rule_addr *addr)
632 {
633 uint64_t ports[2];
634 nvlist_t *nvl = nvlist_create(0);
635
636 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr);
637 ports[0] = addr->port[0];
638 ports[1] = addr->port[1];
639 nvlist_add_number_array(nvl, "port", ports, 2);
640 nvlist_add_number(nvl, "neg", addr->neg);
641 nvlist_add_number(nvl, "port_op", addr->port_op);
642
643 nvlist_add_nvlist(nvparent, name, nvl);
644 nvlist_destroy(nvl);
645 }
646
647 static void
pf_nvrule_addr_to_rule_addr(const nvlist_t * nvl,struct pf_rule_addr * addr)648 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr)
649 {
650 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr);
651
652 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL);
653 addr->neg = nvlist_get_number(nvl, "neg");
654 addr->port_op = nvlist_get_number(nvl, "port_op");
655 }
656
657 static void
pf_nvmape_to_mape(const nvlist_t * nvl,struct pf_mape_portset * mape)658 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape)
659 {
660 mape->offset = nvlist_get_number(nvl, "offset");
661 mape->psidlen = nvlist_get_number(nvl, "psidlen");
662 mape->psid = nvlist_get_number(nvl, "psid");
663 }
664
665 static void
pf_nvpool_to_pool(const nvlist_t * nvl,struct pfctl_pool * pool)666 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool)
667 {
668 size_t len;
669 const void *data;
670
671 data = nvlist_get_binary(nvl, "key", &len);
672 assert(len == sizeof(pool->key));
673 memcpy(&pool->key, data, len);
674
675 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter);
676
677 pool->tblidx = nvlist_get_number(nvl, "tblidx");
678 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL);
679 pool->opts = nvlist_get_number(nvl, "opts");
680
681 if (nvlist_exists_nvlist(nvl, "mape"))
682 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape);
683 }
684
685 static void
pf_nvrule_uid_to_rule_uid(const nvlist_t * nvl,struct pf_rule_uid * uid)686 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid)
687 {
688 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL);
689 uid->op = nvlist_get_number(nvl, "op");
690 }
691
692 static void
pf_nvdivert_to_divert(const nvlist_t * nvl,struct pfctl_rule * rule)693 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule)
694 {
695 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr);
696 rule->divert.port = nvlist_get_number(nvl, "port");
697 }
698
699 static void
pf_nvrule_to_rule(const nvlist_t * nvl,struct pfctl_rule * rule)700 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule)
701 {
702 const uint64_t *skip;
703 const char *const *labels;
704 size_t skipcount, labelcount;
705
706 rule->nr = nvlist_get_number(nvl, "nr");
707
708 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src);
709 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst);
710
711 skip = nvlist_get_number_array(nvl, "skip", &skipcount);
712 assert(skip);
713 assert(skipcount == PF_SKIP_COUNT);
714 for (int i = 0; i < PF_SKIP_COUNT; i++)
715 rule->skip[i].nr = skip[i];
716
717 labels = nvlist_get_string_array(nvl, "labels", &labelcount);
718 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
719 for (size_t i = 0; i < labelcount; i++)
720 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
721 rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
722 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
723 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
724 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE);
725 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
726 PF_TAG_NAME_SIZE);
727 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
728 PF_TAG_NAME_SIZE);
729
730 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"),
731 PF_TABLE_NAME_SIZE);
732
733 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rdr);
734
735 rule->evaluations = nvlist_get_number(nvl, "evaluations");
736 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL);
737 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL);
738
739 if (nvlist_exists_number(nvl, "timestamp")) {
740 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
741 }
742
743 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint");
744
745 rule->rtableid = nvlist_get_number(nvl, "rtableid");
746 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL);
747 rule->max_states = nvlist_get_number(nvl, "max_states");
748 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes");
749 rule->max_src_states = nvlist_get_number(nvl, "max_src_states");
750 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn");
751 rule->max_src_conn_rate.limit =
752 nvlist_get_number(nvl, "max_src_conn_rate.limit");
753 rule->max_src_conn_rate.seconds =
754 nvlist_get_number(nvl, "max_src_conn_rate.seconds");
755 rule->qid = nvlist_get_number(nvl, "qid");
756 rule->pqid = nvlist_get_number(nvl, "pqid");
757 rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
758 rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe");
759 rule->free_flags = nvlist_get_number(nvl, "dnflags");
760 rule->prob = nvlist_get_number(nvl, "prob");
761 rule->cuid = nvlist_get_number(nvl, "cuid");
762 rule->cpid = nvlist_get_number(nvl, "cpid");
763
764 rule->return_icmp = nvlist_get_number(nvl, "return_icmp");
765 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6");
766 rule->max_mss = nvlist_get_number(nvl, "max_mss");
767 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags");
768
769 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid);
770 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"),
771 (struct pf_rule_uid *)&rule->gid);
772
773 rule->rule_flag = nvlist_get_number(nvl, "rule_flag");
774 rule->action = nvlist_get_number(nvl, "action");
775 rule->direction = nvlist_get_number(nvl, "direction");
776 rule->log = nvlist_get_number(nvl, "log");
777 rule->logif = nvlist_get_number(nvl, "logif");
778 rule->quick = nvlist_get_number(nvl, "quick");
779 rule->ifnot = nvlist_get_number(nvl, "ifnot");
780 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not");
781 rule->natpass = nvlist_get_number(nvl, "natpass");
782
783 rule->keep_state = nvlist_get_number(nvl, "keep_state");
784 rule->af = nvlist_get_number(nvl, "af");
785 rule->proto = nvlist_get_number(nvl, "proto");
786 rule->type = nvlist_get_number(nvl, "type");
787 rule->code = nvlist_get_number(nvl, "code");
788 rule->flags = nvlist_get_number(nvl, "flags");
789 rule->flagset = nvlist_get_number(nvl, "flagset");
790 rule->min_ttl = nvlist_get_number(nvl, "min_ttl");
791 rule->allow_opts = nvlist_get_number(nvl, "allow_opts");
792 rule->rt = nvlist_get_number(nvl, "rt");
793 rule->return_ttl = nvlist_get_number(nvl, "return_ttl");
794 rule->tos = nvlist_get_number(nvl, "tos");
795 rule->set_tos = nvlist_get_number(nvl, "set_tos");
796 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
797 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
798
799 rule->flush = nvlist_get_number(nvl, "flush");
800 rule->prio = nvlist_get_number(nvl, "prio");
801 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL);
802
803 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule);
804
805 rule->states_cur = nvlist_get_number(nvl, "states_cur");
806 rule->states_tot = nvlist_get_number(nvl, "states_tot");
807 rule->src_nodes = nvlist_get_number(nvl, "src_nodes");
808 }
809
810 static void
pfctl_nveth_addr_to_eth_addr(const nvlist_t * nvl,struct pfctl_eth_addr * addr)811 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr)
812 {
813 static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 };
814 size_t len;
815 const void *data;
816
817 data = nvlist_get_binary(nvl, "addr", &len);
818 assert(len == sizeof(addr->addr));
819 memcpy(addr->addr, data, sizeof(addr->addr));
820
821 data = nvlist_get_binary(nvl, "mask", &len);
822 assert(len == sizeof(addr->mask));
823 memcpy(addr->mask, data, sizeof(addr->mask));
824
825 addr->neg = nvlist_get_bool(nvl, "neg");
826
827 /* To make checks for 'is this address set?' easier. */
828 addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0;
829 }
830
831 static nvlist_t *
pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr * addr)832 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr)
833 {
834 nvlist_t *nvl;
835
836 nvl = nvlist_create(0);
837 if (nvl == NULL)
838 return (NULL);
839
840 nvlist_add_bool(nvl, "neg", addr->neg);
841 nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN);
842 nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN);
843
844 return (nvl);
845 }
846
847 static void
pfctl_nveth_rule_to_eth_rule(const nvlist_t * nvl,struct pfctl_eth_rule * rule)848 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule)
849 {
850 const char *const *labels;
851 size_t labelcount, i;
852
853 rule->nr = nvlist_get_number(nvl, "nr");
854 rule->quick = nvlist_get_bool(nvl, "quick");
855 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
856 rule->ifnot = nvlist_get_bool(nvl, "ifnot");
857 rule->direction = nvlist_get_number(nvl, "direction");
858 rule->proto = nvlist_get_number(nvl, "proto");
859 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
860 PF_TAG_NAME_SIZE);
861 rule->match_tag = nvlist_get_number(nvl, "match_tag");
862 rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not");
863
864 labels = nvlist_get_string_array(nvl, "labels", &labelcount);
865 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
866 for (i = 0; i < labelcount; i++)
867 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
868 rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
869
870 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"),
871 &rule->src);
872 pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"),
873 &rule->dst);
874
875 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"),
876 &rule->ipsrc);
877 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"),
878 &rule->ipdst);
879
880 rule->evaluations = nvlist_get_number(nvl, "evaluations");
881 rule->packets[0] = nvlist_get_number(nvl, "packets-in");
882 rule->packets[1] = nvlist_get_number(nvl, "packets-out");
883 rule->bytes[0] = nvlist_get_number(nvl, "bytes-in");
884 rule->bytes[1] = nvlist_get_number(nvl, "bytes-out");
885
886 if (nvlist_exists_number(nvl, "timestamp")) {
887 rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
888 }
889
890 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
891 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
892 PF_TAG_NAME_SIZE);
893
894 rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
895 rule->dnflags = nvlist_get_number(nvl, "dnflags");
896
897 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
898 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
899
900 strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"),
901 IFNAMSIZ);
902
903 rule->action = nvlist_get_number(nvl, "action");
904 }
905
906 int
pfctl_get_eth_rulesets_info(int dev,struct pfctl_eth_rulesets_info * ri,const char * path)907 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri,
908 const char *path)
909 {
910 nvlist_t *nvl;
911 int ret;
912
913 bzero(ri, sizeof(*ri));
914
915 nvl = nvlist_create(0);
916 nvlist_add_string(nvl, "path", path);
917
918 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0)
919 goto out;
920
921 ri->nr = nvlist_get_number(nvl, "nr");
922
923 out:
924 nvlist_destroy(nvl);
925 return (ret);
926 }
927
928 int
pfctl_get_eth_ruleset(int dev,const char * path,int nr,struct pfctl_eth_ruleset_info * ri)929 pfctl_get_eth_ruleset(int dev, const char *path, int nr,
930 struct pfctl_eth_ruleset_info *ri)
931 {
932 nvlist_t *nvl;
933 int ret;
934
935 bzero(ri, sizeof(*ri));
936
937 nvl = nvlist_create(0);
938 nvlist_add_string(nvl, "path", path);
939 nvlist_add_number(nvl, "nr", nr);
940
941 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0)
942 goto out;
943
944 ri->nr = nvlist_get_number(nvl, "nr");
945 strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN);
946 strlcpy(ri->name, nvlist_get_string(nvl, "name"),
947 PF_ANCHOR_NAME_SIZE);
948
949 out:
950 nvlist_destroy(nvl);
951 return (ret);
952 }
953
954 int
pfctl_get_eth_rules_info(int dev,struct pfctl_eth_rules_info * rules,const char * path)955 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules,
956 const char *path)
957 {
958 nvlist_t *nvl;
959 int ret;
960
961 bzero(rules, sizeof(*rules));
962
963 nvl = nvlist_create(0);
964 nvlist_add_string(nvl, "anchor", path);
965
966 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0)
967 goto out;
968
969 rules->nr = nvlist_get_number(nvl, "nr");
970 rules->ticket = nvlist_get_number(nvl, "ticket");
971
972 out:
973 nvlist_destroy(nvl);
974 return (ret);
975 }
976
977 int
pfctl_get_eth_rule(int dev,uint32_t nr,uint32_t ticket,const char * path,struct pfctl_eth_rule * rule,bool clear,char * anchor_call)978 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket,
979 const char *path, struct pfctl_eth_rule *rule, bool clear,
980 char *anchor_call)
981 {
982 nvlist_t *nvl;
983 int ret;
984
985 nvl = nvlist_create(0);
986
987 nvlist_add_string(nvl, "anchor", path);
988 nvlist_add_number(nvl, "ticket", ticket);
989 nvlist_add_number(nvl, "nr", nr);
990 nvlist_add_bool(nvl, "clear", clear);
991
992 if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0)
993 goto out;
994
995 pfctl_nveth_rule_to_eth_rule(nvl, rule);
996
997 if (anchor_call)
998 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
999 MAXPATHLEN);
1000
1001 out:
1002 nvlist_destroy(nvl);
1003 return (ret);
1004 }
1005
1006 int
pfctl_add_eth_rule(int dev,const struct pfctl_eth_rule * r,const char * anchor,const char * anchor_call,uint32_t ticket)1007 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor,
1008 const char *anchor_call, uint32_t ticket)
1009 {
1010 struct pfioc_nv nv;
1011 nvlist_t *nvl, *addr;
1012 void *packed;
1013 int error = 0;
1014 size_t labelcount, size;
1015
1016 nvl = nvlist_create(0);
1017
1018 nvlist_add_number(nvl, "ticket", ticket);
1019 nvlist_add_string(nvl, "anchor", anchor);
1020 nvlist_add_string(nvl, "anchor_call", anchor_call);
1021
1022 nvlist_add_number(nvl, "nr", r->nr);
1023 nvlist_add_bool(nvl, "quick", r->quick);
1024 nvlist_add_string(nvl, "ifname", r->ifname);
1025 nvlist_add_bool(nvl, "ifnot", r->ifnot);
1026 nvlist_add_number(nvl, "direction", r->direction);
1027 nvlist_add_number(nvl, "proto", r->proto);
1028 nvlist_add_string(nvl, "match_tagname", r->match_tagname);
1029 nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not);
1030
1031 addr = pfctl_eth_addr_to_nveth_addr(&r->src);
1032 if (addr == NULL) {
1033 nvlist_destroy(nvl);
1034 return (ENOMEM);
1035 }
1036 nvlist_add_nvlist(nvl, "src", addr);
1037 nvlist_destroy(addr);
1038
1039 addr = pfctl_eth_addr_to_nveth_addr(&r->dst);
1040 if (addr == NULL) {
1041 nvlist_destroy(nvl);
1042 return (ENOMEM);
1043 }
1044 nvlist_add_nvlist(nvl, "dst", addr);
1045 nvlist_destroy(addr);
1046
1047 pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc);
1048 pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst);
1049
1050 labelcount = 0;
1051 while (labelcount < PF_RULE_MAX_LABEL_COUNT &&
1052 r->label[labelcount][0] != 0) {
1053 nvlist_append_string_array(nvl, "labels",
1054 r->label[labelcount]);
1055 labelcount++;
1056 }
1057 nvlist_add_number(nvl, "ridentifier", r->ridentifier);
1058
1059 nvlist_add_string(nvl, "qname", r->qname);
1060 nvlist_add_string(nvl, "tagname", r->tagname);
1061 nvlist_add_number(nvl, "dnpipe", r->dnpipe);
1062 nvlist_add_number(nvl, "dnflags", r->dnflags);
1063
1064 nvlist_add_string(nvl, "bridge_to", r->bridge_to);
1065
1066 nvlist_add_number(nvl, "action", r->action);
1067
1068 packed = nvlist_pack(nvl, &size);
1069 if (packed == NULL) {
1070 nvlist_destroy(nvl);
1071 return (ENOMEM);
1072 }
1073
1074 nv.len = size;
1075 nv.size = size;
1076 nv.data = packed;
1077
1078 if (ioctl(dev, DIOCADDETHRULE, &nv) != 0)
1079 error = errno;
1080
1081 free(packed);
1082 nvlist_destroy(nvl);
1083
1084 return (error);
1085 }
1086
1087 static void
snl_add_msg_attr_addr_wrap(struct snl_writer * nw,uint32_t type,const struct pf_addr_wrap * addr)1088 snl_add_msg_attr_addr_wrap(struct snl_writer *nw, uint32_t type, const struct pf_addr_wrap *addr)
1089 {
1090 int off;
1091
1092 off = snl_add_msg_attr_nested(nw, type);
1093
1094 snl_add_msg_attr_ip6(nw, PF_AT_ADDR, &addr->v.a.addr.v6);
1095 snl_add_msg_attr_ip6(nw, PF_AT_MASK, &addr->v.a.mask.v6);
1096
1097 if (addr->type == PF_ADDR_DYNIFTL)
1098 snl_add_msg_attr_string(nw, PF_AT_IFNAME, addr->v.ifname);
1099 if (addr->type == PF_ADDR_TABLE)
1100 snl_add_msg_attr_string(nw, PF_AT_TABLENAME, addr->v.tblname);
1101 snl_add_msg_attr_u8(nw, PF_AT_TYPE, addr->type);
1102 snl_add_msg_attr_u8(nw, PF_AT_IFLAGS, addr->iflags);
1103
1104 snl_end_attr_nested(nw, off);
1105 }
1106
1107 static void
snl_add_msg_attr_pool_addr(struct snl_writer * nw,uint32_t type,const struct pf_pooladdr * pa)1108 snl_add_msg_attr_pool_addr(struct snl_writer *nw, uint32_t type, const struct pf_pooladdr *pa)
1109 {
1110 int off;
1111
1112 off = snl_add_msg_attr_nested(nw, type);
1113
1114 snl_add_msg_attr_string(nw, PF_PA_IFNAME, pa->ifname);
1115 snl_add_msg_attr_addr_wrap(nw, PF_PA_ADDR, &pa->addr);
1116
1117 snl_end_attr_nested(nw, off);
1118 }
1119
1120 static void
snl_add_msg_attr_rule_addr(struct snl_writer * nw,uint32_t type,const struct pf_rule_addr * addr)1121 snl_add_msg_attr_rule_addr(struct snl_writer *nw, uint32_t type, const struct pf_rule_addr *addr)
1122 {
1123 int off;
1124
1125 off = snl_add_msg_attr_nested(nw, type);
1126
1127 snl_add_msg_attr_addr_wrap(nw, PF_RAT_ADDR, &addr->addr);
1128 snl_add_msg_attr_u16(nw, PF_RAT_SRC_PORT, addr->port[0]);
1129 snl_add_msg_attr_u16(nw, PF_RAT_DST_PORT, addr->port[1]);
1130 snl_add_msg_attr_u8(nw, PF_RAT_NEG, addr->neg);
1131 snl_add_msg_attr_u8(nw, PF_RAT_OP, addr->port_op);
1132
1133 snl_end_attr_nested(nw, off);
1134 }
1135
1136 static void
snl_add_msg_attr_rule_labels(struct snl_writer * nw,uint32_t type,const char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE])1137 snl_add_msg_attr_rule_labels(struct snl_writer *nw, uint32_t type, const char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE])
1138 {
1139 int off, i = 0;
1140
1141 off = snl_add_msg_attr_nested(nw, type);
1142
1143 while (i < PF_RULE_MAX_LABEL_COUNT &&
1144 labels[i][0] != 0) {
1145 snl_add_msg_attr_string(nw, PF_LT_LABEL, labels[i]);
1146 i++;
1147 }
1148
1149 snl_end_attr_nested(nw, off);
1150 }
1151
1152 static void
snl_add_msg_attr_mape(struct snl_writer * nw,uint32_t type,const struct pf_mape_portset * me)1153 snl_add_msg_attr_mape(struct snl_writer *nw, uint32_t type, const struct pf_mape_portset *me)
1154 {
1155 int off;
1156
1157 off = snl_add_msg_attr_nested(nw, type);
1158
1159 snl_add_msg_attr_u8(nw, PF_MET_OFFSET, me->offset);
1160 snl_add_msg_attr_u8(nw, PF_MET_PSID_LEN, me->psidlen);
1161 snl_add_msg_attr_u16(nw, PF_MET_PSID, me->psid);
1162
1163 snl_end_attr_nested(nw, off);
1164 }
1165
1166 static void
snl_add_msg_attr_rpool(struct snl_writer * nw,uint32_t type,const struct pfctl_pool * pool)1167 snl_add_msg_attr_rpool(struct snl_writer *nw, uint32_t type, const struct pfctl_pool *pool)
1168 {
1169 int off;
1170
1171 off = snl_add_msg_attr_nested(nw, type);
1172
1173 snl_add_msg_attr(nw, PF_PT_KEY, sizeof(pool->key), &pool->key);
1174 snl_add_msg_attr_ip6(nw, PF_PT_COUNTER, &pool->counter.v6);
1175 snl_add_msg_attr_u32(nw, PF_PT_TBLIDX, pool->tblidx);
1176 snl_add_msg_attr_u16(nw, PF_PT_PROXY_SRC_PORT, pool->proxy_port[0]);
1177 snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]);
1178 snl_add_msg_attr_u8(nw, PF_PT_OPTS, pool->opts);
1179 snl_add_msg_attr_mape(nw, PF_PT_MAPE, &pool->mape);
1180
1181 snl_end_attr_nested(nw, off);
1182 }
1183
1184 static void
snl_add_msg_attr_timeouts(struct snl_writer * nw,uint32_t type,const uint32_t * timeouts)1185 snl_add_msg_attr_timeouts(struct snl_writer *nw, uint32_t type, const uint32_t *timeouts)
1186 {
1187 int off;
1188
1189 off = snl_add_msg_attr_nested(nw, type);
1190
1191 for (int i = 0; i < PFTM_MAX; i++)
1192 snl_add_msg_attr_u32(nw, PF_TT_TIMEOUT, timeouts[i]);
1193
1194 snl_end_attr_nested(nw, off);
1195 }
1196
1197 static void
snl_add_msg_attr_uid(struct snl_writer * nw,uint32_t type,const struct pf_rule_uid * uid)1198 snl_add_msg_attr_uid(struct snl_writer *nw, uint32_t type, const struct pf_rule_uid *uid)
1199 {
1200 int off;
1201
1202 off = snl_add_msg_attr_nested(nw, type);
1203
1204 snl_add_msg_attr_u32(nw, PF_RUT_UID_LOW, uid->uid[0]);
1205 snl_add_msg_attr_u32(nw, PF_RUT_UID_HIGH, uid->uid[1]);
1206 snl_add_msg_attr_u8(nw, PF_RUT_OP, uid->op);
1207
1208 snl_end_attr_nested(nw, off);
1209 }
1210
1211 static void
snl_add_msg_attr_pf_rule(struct snl_writer * nw,uint32_t type,const struct pfctl_rule * r)1212 snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r)
1213 {
1214 int off;
1215
1216 off = snl_add_msg_attr_nested(nw, type);
1217
1218 snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src);
1219 snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst);
1220 snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label);
1221 snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier);
1222 snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname);
1223 snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname);
1224 snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname);
1225 snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname);
1226 snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname);
1227 snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname);
1228 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RDR, &r->rdr);
1229 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_NAT, &r->nat);
1230 snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RT, &r->route);
1231 snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint);
1232 snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid);
1233 snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout);
1234 snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states);
1235 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes);
1236 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states);
1237 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN, r->max_src_conn);
1238 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit);
1239 snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds);
1240
1241 snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe);
1242 snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe);
1243 snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags);
1244
1245 snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr);
1246 snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob);
1247 snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid);
1248 snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid);
1249
1250 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp);
1251 snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6);
1252 snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss);
1253 snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags);
1254
1255 snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid);
1256 snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid);
1257 snl_add_msg_attr_string(nw, PF_RT_RCV_IFNAME, r->rcv_ifname);
1258 snl_add_msg_attr_bool(nw, PF_RT_RCV_IFNOT, r->rcvifnot);
1259
1260 snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag);
1261 snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action);
1262 snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction);
1263 snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log);
1264 snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif);
1265 snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick);
1266 snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot);
1267 snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not);
1268 snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass);
1269 snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state);
1270 snl_add_msg_attr_u8(nw, PF_RT_AF, r->af);
1271 snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto);
1272 snl_add_msg_attr_u8(nw, PF_RT_TYPE, r->type);
1273 snl_add_msg_attr_u8(nw, PF_RT_CODE, r->code);
1274 snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags);
1275 snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset);
1276 snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl);
1277 snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts);
1278 snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt);
1279 snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl);
1280 snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos);
1281 snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos);
1282
1283 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative);
1284 snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard);
1285 snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush);
1286 snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio);
1287 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]);
1288 snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]);
1289 snl_add_msg_attr_u8(nw, PF_RT_NAF, r->naf);
1290
1291 snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6);
1292 snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port);
1293
1294 snl_end_attr_nested(nw, off);
1295 }
1296
1297 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)1298 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor,
1299 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket)
1300 {
1301 struct pfctl_handle *h;
1302 int ret;
1303
1304 h = pfctl_open(PF_DEVICE);
1305 if (h == NULL)
1306 return (ENODEV);
1307
1308 ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket);
1309
1310 pfctl_close(h);
1311
1312 return (ret);
1313 }
1314
1315 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)1316 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r,
1317 const char *anchor, const char *anchor_call, uint32_t ticket,
1318 uint32_t pool_ticket)
1319 {
1320 struct snl_writer nw;
1321 struct snl_errmsg_data e = {};
1322 struct nlmsghdr *hdr;
1323 uint32_t seq_id;
1324 int family_id;
1325
1326 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1327 if (family_id == 0)
1328 return (ENOTSUP);
1329
1330 snl_init_writer(&h->ss, &nw);
1331 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE);
1332 hdr->nlmsg_flags |= NLM_F_DUMP;
1333 snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket);
1334 snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket);
1335 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor);
1336 snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call);
1337
1338 snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r);
1339
1340 if ((hdr = snl_finalize_msg(&nw)) == NULL)
1341 return (ENXIO);
1342
1343 seq_id = hdr->nlmsg_seq;
1344
1345 if (! snl_send_message(&h->ss, hdr))
1346 return (ENXIO);
1347
1348 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1349 }
1350
1351 return (e.error);
1352 }
1353
1354 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1355 #define _OUT(_field) offsetof(struct pfctl_rules_info, _field)
1356 static struct snl_attr_parser ap_getrules[] = {
1357 { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
1358 { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
1359 };
1360 #undef _IN
1361 #undef _OUT
1362 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, snl_f_p_empty, ap_getrules);
1363
1364 int
pfctl_get_rules_info_h(struct pfctl_handle * h,struct pfctl_rules_info * rules,uint32_t ruleset,const char * path)1365 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset,
1366 const char *path)
1367 {
1368 struct snl_errmsg_data e = {};
1369 struct nlmsghdr *hdr;
1370 struct snl_writer nw;
1371 uint32_t seq_id;
1372 int family_id;
1373
1374 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1375 if (family_id == 0)
1376 return (ENOTSUP);
1377
1378 snl_init_writer(&h->ss, &nw);
1379 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES);
1380 hdr->nlmsg_flags |= NLM_F_DUMP;
1381
1382 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path);
1383 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1384
1385 hdr = snl_finalize_msg(&nw);
1386 if (hdr == NULL)
1387 return (ENOMEM);
1388
1389 seq_id = hdr->nlmsg_seq;
1390 if (! snl_send_message(&h->ss, hdr))
1391 return (ENXIO);
1392
1393 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1394 if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules))
1395 continue;
1396 }
1397
1398 return (e.error);
1399 }
1400
1401 int
pfctl_get_rules_info(int dev __unused,struct pfctl_rules_info * rules,uint32_t ruleset,const char * path)1402 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset,
1403 const char *path)
1404 {
1405 struct pfctl_handle *h;
1406 int error;
1407
1408 h = pfctl_open(PF_DEVICE);
1409 if (h == NULL)
1410 return (ENOTSUP);
1411 error = pfctl_get_rules_info_h(h, rules, ruleset, path);
1412 pfctl_close(h);
1413
1414 return (error);
1415 }
1416
1417 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)1418 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor,
1419 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1420 {
1421 return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule,
1422 anchor_call, false));
1423 }
1424
1425 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)1426 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor,
1427 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1428 {
1429 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule,
1430 anchor_call, false));
1431 }
1432
1433 #define _OUT(_field) offsetof(struct pf_addr_wrap, _field)
1434 static const struct snl_attr_parser ap_addr_wrap[] = {
1435 { .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr },
1436 { .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr },
1437 { .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string },
1438 { .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1439 { .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 },
1440 { .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 },
1441 { .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 },
1442 { .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 },
1443 };
1444 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap);
1445 #undef _OUT
1446
1447 #define _OUT(_field) offsetof(struct pf_rule_addr, _field)
1448 static struct snl_attr_parser ap_rule_addr[] = {
1449 { .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
1450 { .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1451 { .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1452 { .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 },
1453 { .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 },
1454 };
1455 #undef _OUT
1456 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr);
1457
1458 struct snl_parsed_labels
1459 {
1460 char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
1461 uint32_t i;
1462 };
1463
1464 static bool
snl_attr_get_pf_rule_labels(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1465 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1466 const void *arg __unused, void *target)
1467 {
1468 struct snl_parsed_labels *l = (struct snl_parsed_labels *)target;
1469 bool ret;
1470
1471 if (l->i >= PF_RULE_MAX_LABEL_COUNT)
1472 return (E2BIG);
1473
1474 ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE,
1475 l->labels[l->i]);
1476 if (ret)
1477 l->i++;
1478
1479 return (ret);
1480 }
1481
1482 #define _OUT(_field) offsetof(struct nl_parsed_labels, _field)
1483 static const struct snl_attr_parser ap_labels[] = {
1484 { .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels },
1485 };
1486 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels);
1487 #undef _OUT
1488
1489 static bool
snl_attr_get_nested_pf_rule_labels(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1490 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1491 const void *arg __unused, void *target)
1492 {
1493 struct snl_parsed_labels parsed_labels = { };
1494 bool error;
1495
1496 /* Assumes target points to the beginning of the structure */
1497 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels);
1498 if (! error)
1499 return (error);
1500
1501 memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels));
1502
1503 return (true);
1504 }
1505
1506 #define _OUT(_field) offsetof(struct pf_mape_portset, _field)
1507 static const struct snl_attr_parser ap_mape_portset[] = {
1508 { .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 },
1509 { .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 },
1510 {. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 },
1511 };
1512 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset);
1513 #undef _OUT
1514
1515 #define _OUT(_field) offsetof(struct pfctl_pool, _field)
1516 static const struct snl_attr_parser ap_pool[] = {
1517 { .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes },
1518 { .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr },
1519 { .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 },
1520 { .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 },
1521 { .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 },
1522 { .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 },
1523 { .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested },
1524 };
1525 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool);
1526 #undef _OUT
1527
1528 struct nl_parsed_timeouts
1529 {
1530 uint32_t timeouts[PFTM_MAX];
1531 uint32_t i;
1532 };
1533
1534 static bool
snl_attr_get_pf_timeout(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1535 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla,
1536 const void *arg __unused, void *target)
1537 {
1538 struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target;
1539 bool ret;
1540
1541 if (t->i >= PFTM_MAX)
1542 return (E2BIG);
1543
1544 ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]);
1545 if (ret)
1546 t->i++;
1547
1548 return (ret);
1549 }
1550
1551 #define _OUT(_field) offsetof(struct nl_parsed_timeout, _field)
1552 static const struct snl_attr_parser ap_timeouts[] = {
1553 { .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout },
1554 };
1555 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts);
1556 #undef _OUT
1557
1558 static bool
snl_attr_get_nested_timeouts(struct snl_state * ss,struct nlattr * nla,const void * arg __unused,void * target)1559 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla,
1560 const void *arg __unused, void *target)
1561 {
1562 struct nl_parsed_timeouts parsed_timeouts = { };
1563 bool error;
1564
1565 /* Assumes target points to the beginning of the structure */
1566 error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts);
1567 if (! error)
1568 return (error);
1569
1570 memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts));
1571
1572 return (true);
1573 }
1574
1575 #define _OUT(_field) offsetof(struct pf_rule_uid, _field)
1576 static const struct snl_attr_parser ap_rule_uid[] = {
1577 { .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 },
1578 { .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 },
1579 { .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 },
1580 };
1581 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid);
1582 #undef _OUT
1583
1584 struct pfctl_nl_get_rule {
1585 struct pfctl_rule r;
1586 char anchor_call[MAXPATHLEN];
1587 };
1588 #define _OUT(_field) offsetof(struct pfctl_nl_get_rule, _field)
1589 static struct snl_attr_parser ap_getrule[] = {
1590 { .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1591 { .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1592 { .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 },
1593 { .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels },
1594 { .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string },
1595 { .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1596 { .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1597 { .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1598 { .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1599 { .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1600 { .type = PF_RT_RPOOL_RDR, .off = _OUT(r.rdr), .arg = &pool_parser, .cb = snl_attr_get_nested },
1601 { .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 },
1602 { .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 },
1603 { .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts },
1604 { .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 },
1605 { .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 },
1606 { .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 },
1607 { .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 },
1608 { .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 },
1609 { .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 },
1610 { .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 },
1611 { .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 },
1612 { .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 },
1613 { .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 },
1614 { .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 },
1615 {. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 },
1616 { .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 },
1617 { .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 },
1618 { .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 },
1619 { .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 },
1620 { .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1621 { .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1622 { .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 },
1623 { .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 },
1624 { .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 },
1625 { .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 },
1626 { .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 },
1627 { .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 },
1628 { .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 },
1629 { .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 },
1630 { .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 },
1631 { .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 },
1632 { .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 },
1633 { .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 },
1634 { .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 },
1635 { .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 },
1636 { .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 },
1637 { .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 },
1638 { .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 },
1639 { .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 },
1640 { .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 },
1641 { .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 },
1642 { .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 },
1643 { .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 },
1644 { .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 },
1645 { .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 },
1646 { .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 },
1647 { .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 },
1648 { .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 },
1649 { .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 },
1650 { .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr },
1651 { .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 },
1652 { .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 },
1653 { .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 },
1654 { .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 },
1655 { .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 },
1656 { .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 },
1657 { .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 },
1658 { .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 },
1659 { .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 },
1660 { .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 },
1661 { .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string },
1662 { .type = PF_RT_RCV_IFNAME, .off = _OUT(r.rcv_ifname), .arg = (void*)IFNAMSIZ, .cb = snl_attr_copy_string },
1663 { .type = PF_RT_MAX_SRC_CONN, .off = _OUT(r.max_src_conn), .cb = snl_attr_get_uint32 },
1664 { .type = PF_RT_RPOOL_NAT, .off = _OUT(r.nat), .arg = &pool_parser, .cb = snl_attr_get_nested },
1665 { .type = PF_RT_NAF, .off = _OUT(r.naf), .cb = snl_attr_get_uint8 },
1666 { .type = PF_RT_RPOOL_RT, .off = _OUT(r.route), .arg = &pool_parser, .cb = snl_attr_get_nested },
1667 { .type = PF_RT_RCV_IFNOT, .off = _OUT(r.rcvifnot),.cb = snl_attr_get_bool },
1668 { .type = PF_RT_SRC_NODES_LIMIT, .off = _OUT(r.src_nodes_type[PF_SN_LIMIT]), .cb = snl_attr_get_uint64 },
1669 { .type = PF_RT_SRC_NODES_NAT, .off = _OUT(r.src_nodes_type[PF_SN_NAT]), .cb = snl_attr_get_uint64 },
1670 { .type = PF_RT_SRC_NODES_ROUTE, .off = _OUT(r.src_nodes_type[PF_SN_ROUTE]), .cb = snl_attr_get_uint64 },
1671 };
1672 #undef _OUT
1673 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, snl_f_p_empty, ap_getrule);
1674
1675 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)1676 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket,
1677 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1678 char *anchor_call, bool clear)
1679 {
1680 struct pfctl_nl_get_rule attrs = {};
1681 struct snl_errmsg_data e = {};
1682 struct nlmsghdr *hdr;
1683 struct snl_writer nw;
1684 uint32_t seq_id;
1685 int family_id;
1686
1687 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1688 if (family_id == 0)
1689 return (ENOTSUP);
1690
1691 snl_init_writer(&h->ss, &nw);
1692 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE);
1693 hdr->nlmsg_flags |= NLM_F_DUMP;
1694
1695 snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor);
1696 snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1697 snl_add_msg_attr_u32(&nw, PF_GR_NR, nr);
1698 snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket);
1699 snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear);
1700
1701 hdr = snl_finalize_msg(&nw);
1702 if (hdr == NULL)
1703 return (ENOMEM);
1704
1705 seq_id = hdr->nlmsg_seq;
1706 if (! snl_send_message(&h->ss, hdr))
1707 return (ENXIO);
1708
1709 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1710 if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs))
1711 continue;
1712 }
1713
1714 memcpy(rule, &attrs.r, sizeof(attrs.r));
1715 strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN);
1716
1717 return (e.error);
1718 }
1719
1720 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)1721 pfctl_get_clear_rule(int dev, 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 nvlist_t *nvl;
1726 int ret;
1727
1728 nvl = nvlist_create(0);
1729 if (nvl == 0)
1730 return (ENOMEM);
1731
1732 nvlist_add_number(nvl, "nr", nr);
1733 nvlist_add_number(nvl, "ticket", ticket);
1734 nvlist_add_string(nvl, "anchor", anchor);
1735 nvlist_add_number(nvl, "ruleset", ruleset);
1736
1737 if (clear)
1738 nvlist_add_bool(nvl, "clear_counter", true);
1739
1740 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0)
1741 goto out;
1742
1743 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule);
1744
1745 if (anchor_call)
1746 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1747 MAXPATHLEN);
1748
1749 out:
1750 nvlist_destroy(nvl);
1751 return (ret);
1752 }
1753
1754 int
pfctl_set_keepcounters(int dev,bool keep)1755 pfctl_set_keepcounters(int dev, bool keep)
1756 {
1757 struct pfioc_nv nv;
1758 nvlist_t *nvl;
1759 int ret;
1760
1761 nvl = nvlist_create(0);
1762
1763 nvlist_add_bool(nvl, "keep_counters", keep);
1764
1765 nv.data = nvlist_pack(nvl, &nv.len);
1766 nv.size = nv.len;
1767
1768 nvlist_destroy(nvl);
1769
1770 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv);
1771
1772 free(nv.data);
1773 return (ret);
1774 }
1775
1776 struct pfctl_creator {
1777 uint32_t id;
1778 };
1779 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1780 #define _OUT(_field) offsetof(struct pfctl_creator, _field)
1781 static struct snl_attr_parser ap_creators[] = {
1782 { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
1783 };
1784 #undef _IN
1785 #undef _OUT
1786 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, snl_f_p_empty, ap_creators);
1787
1788 static int
pfctl_get_creators_nl(struct snl_state * ss,uint32_t * creators,size_t * len)1789 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len)
1790 {
1791
1792 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1793 size_t i = 0;
1794
1795 struct nlmsghdr *hdr;
1796 struct snl_writer nw;
1797
1798 if (family_id == 0)
1799 return (ENOTSUP);
1800
1801 snl_init_writer(ss, &nw);
1802 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS);
1803 hdr->nlmsg_flags |= NLM_F_DUMP;
1804 hdr = snl_finalize_msg(&nw);
1805 if (hdr == NULL)
1806 return (ENOMEM);
1807 uint32_t seq_id = hdr->nlmsg_seq;
1808
1809 snl_send_message(ss, hdr);
1810
1811 struct snl_errmsg_data e = {};
1812 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1813 struct pfctl_creator c;
1814 bzero(&c, sizeof(c));
1815
1816 if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c))
1817 continue;
1818
1819 creators[i] = c.id;
1820 i++;
1821 if (i > *len)
1822 return (E2BIG);
1823 }
1824
1825 *len = i;
1826
1827 return (0);
1828 }
1829
1830 int
pfctl_get_creatorids(struct pfctl_handle * h,uint32_t * creators,size_t * len)1831 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len)
1832 {
1833 int error;
1834
1835 error = pfctl_get_creators_nl(&h->ss, creators, len);
1836
1837 return (error);
1838 }
1839
1840 static inline bool
snl_attr_get_pfaddr(struct snl_state * ss __unused,struct nlattr * nla,const void * arg __unused,void * target)1841 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla,
1842 const void *arg __unused, void *target)
1843 {
1844 memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla));
1845 return (true);
1846 }
1847
1848 static inline bool
snl_attr_store_ifname(struct snl_state * ss __unused,struct nlattr * nla,const void * arg __unused,void * target)1849 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla,
1850 const void *arg __unused, void *target)
1851 {
1852 size_t maxlen = NLA_DATA_LEN(nla);
1853
1854 if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) {
1855 strlcpy(target, (char *)NLA_DATA(nla), maxlen);
1856 return (true);
1857 }
1858 return (false);
1859 }
1860
1861 #define _OUT(_field) offsetof(struct pfctl_state_peer, _field)
1862 static const struct snl_attr_parser nla_p_speer[] = {
1863 { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 },
1864 { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 },
1865 { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 },
1866 { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 },
1867 { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 },
1868 };
1869 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer);
1870 #undef _OUT
1871
1872 #define _OUT(_field) offsetof(struct pfctl_state_key, _field)
1873 static const struct snl_attr_parser nla_p_skey[] = {
1874 { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr },
1875 { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr },
1876 { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1877 { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1878 { .type = PF_STK_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
1879 { .type = PF_STK_PROTO, .off = _OUT(proto), .cb = snl_attr_get_uint16 },
1880 };
1881 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey);
1882 #undef _OUT
1883
1884 #define _IN(_field) offsetof(struct genlmsghdr, _field)
1885 #define _OUT(_field) offsetof(struct pfctl_state, _field)
1886 static struct snl_attr_parser ap_state[] = {
1887 { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 },
1888 { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 },
1889 { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname },
1890 { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname },
1891 { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1892 { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1893 { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested },
1894 { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested },
1895 { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr },
1896 { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
1897 { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 },
1898 { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 },
1899 { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 },
1900 { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 },
1901 { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
1902 { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
1903 { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
1904 { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
1905 { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 },
1906 { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 },
1907 { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 },
1908 { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 },
1909 { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 },
1910 { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 },
1911 { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 },
1912 { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 },
1913 { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 },
1914 { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 },
1915 { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname },
1916 { .type = PF_ST_SRC_NODE_FLAGS, .off = _OUT(src_node_flags), .cb = snl_attr_get_uint8 },
1917 };
1918 #undef _IN
1919 #undef _OUT
1920 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, snl_f_p_empty, ap_state);
1921
1922 static const struct snl_hdr_parser *all_parsers[] = {
1923 &state_parser, &skey_parser, &speer_parser,
1924 &creator_parser, &getrules_parser
1925 };
1926
1927 static int
pfctl_get_states_nl(struct pfctl_state_filter * filter,struct snl_state * ss,pfctl_get_state_fn f,void * arg)1928 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg)
1929 {
1930 SNL_VERIFY_PARSERS(all_parsers);
1931 int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1932 int ret;
1933
1934 struct nlmsghdr *hdr;
1935 struct snl_writer nw;
1936
1937 if (family_id == 0)
1938 return (ENOTSUP);
1939
1940 snl_init_writer(ss, &nw);
1941 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES);
1942 hdr->nlmsg_flags |= NLM_F_DUMP;
1943 snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname);
1944 snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto);
1945 snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af);
1946 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6);
1947 snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6);
1948
1949 hdr = snl_finalize_msg(&nw);
1950 if (hdr == NULL)
1951 return (ENOMEM);
1952
1953 uint32_t seq_id = hdr->nlmsg_seq;
1954
1955 snl_send_message(ss, hdr);
1956
1957 struct snl_errmsg_data e = {};
1958 while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1959 struct pfctl_state s;
1960 bzero(&s, sizeof(s));
1961 if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s))
1962 continue;
1963
1964 ret = f(&s, arg);
1965 if (ret != 0)
1966 return (ret);
1967 }
1968
1969 return (0);
1970 }
1971
1972 int
pfctl_get_states_iter(pfctl_get_state_fn f,void * arg)1973 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg)
1974 {
1975 struct pfctl_state_filter filter = {};
1976 return (pfctl_get_filtered_states_iter(&filter, f, arg));
1977 }
1978
1979 int
pfctl_get_filtered_states_iter(struct pfctl_state_filter * filter,pfctl_get_state_fn f,void * arg)1980 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
1981 {
1982 struct snl_state ss = {};
1983 int error;
1984
1985 snl_init(&ss, NETLINK_GENERIC);
1986 error = pfctl_get_states_nl(filter, &ss, f, arg);
1987 snl_free(&ss);
1988
1989 return (error);
1990 }
1991
1992 static int
pfctl_append_states(struct pfctl_state * s,void * arg)1993 pfctl_append_states(struct pfctl_state *s, void *arg)
1994 {
1995 struct pfctl_state *new;
1996 struct pfctl_states *states = (struct pfctl_states *)arg;
1997
1998 new = malloc(sizeof(*s));
1999 if (new == NULL)
2000 return (ENOMEM);
2001
2002 memcpy(new, s, sizeof(*s));
2003
2004 TAILQ_INSERT_TAIL(&states->states, new, entry);
2005
2006 return (0);
2007 }
2008
2009 int
pfctl_get_states(int dev __unused,struct pfctl_states * states)2010 pfctl_get_states(int dev __unused, struct pfctl_states *states)
2011 {
2012 int ret;
2013
2014 bzero(states, sizeof(*states));
2015 TAILQ_INIT(&states->states);
2016
2017 ret = pfctl_get_states_iter(pfctl_append_states, states);
2018 if (ret != 0) {
2019 pfctl_free_states(states);
2020 return (ret);
2021 }
2022
2023 return (0);
2024 }
2025
2026 void
pfctl_free_states(struct pfctl_states * states)2027 pfctl_free_states(struct pfctl_states *states)
2028 {
2029 struct pfctl_state *s, *tmp;
2030
2031 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) {
2032 free(s);
2033 }
2034
2035 bzero(states, sizeof(*states));
2036 }
2037
2038 struct pfctl_nl_clear_states {
2039 uint32_t killed;
2040 };
2041 #define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field)
2042 static struct snl_attr_parser ap_clear_states[] = {
2043 { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 },
2044 };
2045 #undef _OUT
2046 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, snl_f_p_empty, ap_clear_states);
2047
2048 static int
_pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed,int cmd)2049 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2050 unsigned int *killed, int cmd)
2051 {
2052 struct snl_writer nw;
2053 struct snl_errmsg_data e = {};
2054 struct pfctl_nl_clear_states attrs = {};
2055 struct nlmsghdr *hdr;
2056 uint32_t seq_id;
2057 int family_id;
2058
2059 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2060 if (family_id == 0)
2061 return (ENOTSUP);
2062
2063 snl_init_writer(&h->ss, &nw);
2064 hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
2065 hdr->nlmsg_flags |= NLM_F_DUMP;
2066
2067 snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id);
2068 snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid));
2069 snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction);
2070 snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af);
2071 snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto);
2072 snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src);
2073 snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst);
2074 snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr);
2075 snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname);
2076 snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label);
2077 snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match);
2078 snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat);
2079
2080 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2081 return (ENXIO);
2082
2083 seq_id = hdr->nlmsg_seq;
2084
2085 if (! snl_send_message(&h->ss, hdr))
2086 return (ENXIO);
2087
2088 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2089 if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs))
2090 continue;
2091 }
2092
2093 if (killed)
2094 *killed = attrs.killed;
2095
2096 return (e.error);
2097 }
2098
2099 int
pfctl_clear_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2100 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2101 unsigned int *killed)
2102 {
2103 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES));
2104 }
2105
2106 int
pfctl_kill_states_h(struct pfctl_handle * h,const struct pfctl_kill * kill,unsigned int * killed)2107 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2108 unsigned int *killed)
2109 {
2110 return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES));
2111 }
2112
2113 static int
_pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed,uint64_t cmd)2114 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2115 unsigned int *killed, uint64_t cmd)
2116 {
2117 struct pfctl_handle *h;
2118 int ret;
2119
2120 h = pfctl_open(PF_DEVICE);
2121 if (h == NULL)
2122 return (ENODEV);
2123
2124 ret = _pfctl_clear_states_h(h, kill, killed, cmd);
2125 pfctl_close(h);
2126
2127 return (ret);
2128 }
2129
2130 int
pfctl_clear_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2131 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2132 unsigned int *killed)
2133 {
2134 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES));
2135 }
2136
2137 int
pfctl_kill_states(int dev __unused,const struct pfctl_kill * kill,unsigned int * killed)2138 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed)
2139 {
2140 return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES));
2141 }
2142
2143 int
pfctl_clear_rules(int dev,const char * anchorname)2144 pfctl_clear_rules(int dev, const char *anchorname)
2145 {
2146 struct pfioc_trans trans;
2147 struct pfioc_trans_e transe[2];
2148 int ret;
2149
2150 bzero(&trans, sizeof(trans));
2151 bzero(&transe, sizeof(transe));
2152
2153 transe[0].rs_num = PF_RULESET_SCRUB;
2154 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2155 >= sizeof(transe[0].anchor))
2156 return (E2BIG);
2157
2158 transe[1].rs_num = PF_RULESET_FILTER;
2159 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2160 >= sizeof(transe[1].anchor))
2161 return (E2BIG);
2162
2163 trans.size = 2;
2164 trans.esize = sizeof(transe[0]);
2165 trans.array = transe;
2166
2167 ret = ioctl(dev, DIOCXBEGIN, &trans);
2168 if (ret != 0)
2169 return (errno);
2170 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2171 if (ret != 0)
2172 return (errno);
2173
2174 return (0);
2175 }
2176
2177 int
pfctl_clear_nat(int dev,const char * anchorname)2178 pfctl_clear_nat(int dev, const char *anchorname)
2179 {
2180 struct pfioc_trans trans;
2181 struct pfioc_trans_e transe[3];
2182 int ret;
2183
2184 bzero(&trans, sizeof(trans));
2185 bzero(&transe, sizeof(transe));
2186
2187 transe[0].rs_num = PF_RULESET_NAT;
2188 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2189 >= sizeof(transe[0].anchor))
2190 return (E2BIG);
2191
2192 transe[1].rs_num = PF_RULESET_BINAT;
2193 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2194 >= sizeof(transe[0].anchor))
2195 return (E2BIG);
2196
2197 transe[2].rs_num = PF_RULESET_RDR;
2198 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor))
2199 >= sizeof(transe[2].anchor))
2200 return (E2BIG);
2201
2202 trans.size = 3;
2203 trans.esize = sizeof(transe[0]);
2204 trans.array = transe;
2205
2206 ret = ioctl(dev, DIOCXBEGIN, &trans);
2207 if (ret != 0)
2208 return (errno);
2209 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2210 if (ret != 0)
2211 return (errno);
2212
2213 return (0);
2214 }
2215
2216 int
pfctl_clear_eth_rules(int dev,const char * anchorname)2217 pfctl_clear_eth_rules(int dev, const char *anchorname)
2218 {
2219 struct pfioc_trans trans;
2220 struct pfioc_trans_e transe;
2221 int ret;
2222
2223 bzero(&trans, sizeof(trans));
2224 bzero(&transe, sizeof(transe));
2225
2226 transe.rs_num = PF_RULESET_ETH;
2227 if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor))
2228 >= sizeof(transe.anchor))
2229 return (E2BIG);
2230
2231 trans.size = 1;
2232 trans.esize = sizeof(transe);
2233 trans.array = &transe;
2234
2235 ret = ioctl(dev, DIOCXBEGIN, &trans);
2236 if (ret != 0)
2237 return (errno);
2238 ret = ioctl(dev, DIOCXCOMMIT, &trans);
2239 if (ret != 0)
2240 return (errno);
2241
2242 return (0);
2243 }
2244
2245 static int
_pfctl_get_limit(int dev,const int index,uint * limit)2246 _pfctl_get_limit(int dev, const int index, uint *limit)
2247 {
2248 struct pfioc_limit pl;
2249
2250 bzero(&pl, sizeof(pl));
2251 pl.index = index;
2252
2253 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1)
2254 return (errno);
2255
2256 *limit = pl.limit;
2257
2258 return (0);
2259 }
2260
2261 int
pfctl_set_syncookies(int dev,const struct pfctl_syncookies * s)2262 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s)
2263 {
2264 struct pfioc_nv nv;
2265 nvlist_t *nvl;
2266 int ret;
2267 uint state_limit;
2268 uint64_t lim, hi, lo;
2269
2270 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2271 if (ret != 0)
2272 return (ret);
2273
2274 lim = state_limit;
2275 hi = lim * s->highwater / 100;
2276 lo = lim * s->lowwater / 100;
2277
2278 if (lo == hi)
2279 hi++;
2280
2281 nvl = nvlist_create(0);
2282
2283 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER);
2284 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE);
2285 nvlist_add_number(nvl, "highwater", hi);
2286 nvlist_add_number(nvl, "lowwater", lo);
2287
2288 nv.data = nvlist_pack(nvl, &nv.len);
2289 nv.size = nv.len;
2290 nvlist_destroy(nvl);
2291 nvl = NULL;
2292
2293 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv);
2294
2295 free(nv.data);
2296 if (ret != 0)
2297 return (errno);
2298
2299 return (0);
2300 }
2301
2302 int
pfctl_get_syncookies(int dev,struct pfctl_syncookies * s)2303 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s)
2304 {
2305 nvlist_t *nvl;
2306 int ret;
2307 uint state_limit;
2308 bool enabled, adaptive;
2309
2310 ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2311 if (ret != 0)
2312 return (ret);
2313
2314 bzero(s, sizeof(*s));
2315
2316 nvl = nvlist_create(0);
2317
2318 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) {
2319 ret = errno;
2320 goto out;
2321 }
2322
2323 enabled = nvlist_get_bool(nvl, "enabled");
2324 adaptive = nvlist_get_bool(nvl, "adaptive");
2325
2326 if (enabled) {
2327 if (adaptive)
2328 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE;
2329 else
2330 s->mode = PFCTL_SYNCOOKIES_ALWAYS;
2331 } else {
2332 s->mode = PFCTL_SYNCOOKIES_NEVER;
2333 }
2334
2335 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit;
2336 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit;
2337 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states");
2338
2339 out:
2340 nvlist_destroy(nvl);
2341 return (ret);
2342 }
2343
2344 int
pfctl_table_add_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * nadd,int flags)2345 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2346 *addr, int size, int *nadd, int flags)
2347 {
2348 struct pfioc_table io;
2349
2350 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2351 return (EINVAL);
2352 }
2353 bzero(&io, sizeof io);
2354 io.pfrio_flags = flags;
2355 io.pfrio_table = *tbl;
2356 io.pfrio_buffer = addr;
2357 io.pfrio_esize = sizeof(*addr);
2358 io.pfrio_size = size;
2359
2360 if (ioctl(dev, DIOCRADDADDRS, &io))
2361 return (errno);
2362 if (nadd != NULL)
2363 *nadd = io.pfrio_nadd;
2364 return (0);
2365 }
2366
2367 int
pfctl_table_del_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * ndel,int flags)2368 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2369 *addr, int size, int *ndel, int flags)
2370 {
2371 struct pfioc_table io;
2372
2373 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2374 return (EINVAL);
2375 }
2376 bzero(&io, sizeof io);
2377 io.pfrio_flags = flags;
2378 io.pfrio_table = *tbl;
2379 io.pfrio_buffer = addr;
2380 io.pfrio_esize = sizeof(*addr);
2381 io.pfrio_size = size;
2382
2383 if (ioctl(dev, DIOCRDELADDRS, &io))
2384 return (errno);
2385 if (ndel != NULL)
2386 *ndel = io.pfrio_ndel;
2387 return (0);
2388 }
2389
2390 int
pfctl_table_set_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * size2,int * nadd,int * ndel,int * nchange,int flags)2391 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2392 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags)
2393 {
2394 struct pfioc_table io;
2395
2396 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2397 return (EINVAL);
2398 }
2399 bzero(&io, sizeof io);
2400 io.pfrio_flags = flags;
2401 io.pfrio_table = *tbl;
2402 io.pfrio_buffer = addr;
2403 io.pfrio_esize = sizeof(*addr);
2404 io.pfrio_size = size;
2405 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0;
2406 if (ioctl(dev, DIOCRSETADDRS, &io))
2407 return (errno);
2408 if (nadd != NULL)
2409 *nadd = io.pfrio_nadd;
2410 if (ndel != NULL)
2411 *ndel = io.pfrio_ndel;
2412 if (nchange != NULL)
2413 *nchange = io.pfrio_nchange;
2414 if (size2 != NULL)
2415 *size2 = io.pfrio_size2;
2416 return (0);
2417 }
2418
pfctl_table_get_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int * size,int flags)2419 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr,
2420 int *size, int flags)
2421 {
2422 struct pfioc_table io;
2423
2424 if (tbl == NULL || size == NULL || *size < 0 ||
2425 (*size && addr == NULL)) {
2426 return (EINVAL);
2427 }
2428 bzero(&io, sizeof io);
2429 io.pfrio_flags = flags;
2430 io.pfrio_table = *tbl;
2431 io.pfrio_buffer = addr;
2432 io.pfrio_esize = sizeof(*addr);
2433 io.pfrio_size = *size;
2434 if (ioctl(dev, DIOCRGETADDRS, &io))
2435 return (errno);
2436 *size = io.pfrio_size;
2437 return (0);
2438 }
2439
2440 int
pfctl_set_statusif(struct pfctl_handle * h,const char * ifname)2441 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname)
2442 {
2443 struct snl_writer nw;
2444 struct snl_errmsg_data e = {};
2445 struct nlmsghdr *hdr;
2446 uint32_t seq_id;
2447 int family_id;
2448
2449 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2450 if (family_id == 0)
2451 return (ENOTSUP);
2452
2453 snl_init_writer(&h->ss, &nw);
2454 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF);
2455
2456 snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname);
2457
2458 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2459 return (ENXIO);
2460
2461 seq_id = hdr->nlmsg_seq;
2462
2463 if (! snl_send_message(&h->ss, hdr))
2464 return (ENXIO);
2465
2466 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2467 }
2468
2469 return (e.error);
2470 }
2471
2472 #define _IN(_field) offsetof(struct genlmsghdr, _field)
2473 #define _OUT(_field) offsetof(struct pfctl_natlook, _field)
2474 static struct snl_attr_parser ap_natlook[] = {
2475 { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr },
2476 { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr },
2477 { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 },
2478 { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 },
2479 };
2480 #undef _IN
2481 #undef _OUT
2482 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, snl_f_p_empty, ap_natlook);
2483
2484 int
pfctl_natlook(struct pfctl_handle * h,const struct pfctl_natlook_key * k,struct pfctl_natlook * r)2485 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k,
2486 struct pfctl_natlook *r)
2487 {
2488 struct snl_writer nw;
2489 struct snl_errmsg_data e = {};
2490 struct nlmsghdr *hdr;
2491 uint32_t seq_id;
2492 int family_id;
2493
2494 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2495 if (family_id == 0)
2496 return (ENOTSUP);
2497
2498 snl_init_writer(&h->ss, &nw);
2499 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK);
2500 hdr->nlmsg_flags |= NLM_F_DUMP;
2501
2502 snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af);
2503 snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction);
2504 snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto);
2505 snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6);
2506 snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6);
2507 snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport);
2508 snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport);
2509
2510 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2511 return (ENXIO);
2512
2513 seq_id = hdr->nlmsg_seq;
2514
2515 if (! snl_send_message(&h->ss, hdr))
2516 return (ENXIO);
2517
2518 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2519 if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r))
2520 continue;
2521 }
2522
2523 return (e.error);
2524 }
2525
2526 int
pfctl_set_debug(struct pfctl_handle * h,uint32_t level)2527 pfctl_set_debug(struct pfctl_handle *h, uint32_t level)
2528 {
2529 struct snl_writer nw;
2530 struct snl_errmsg_data e = {};
2531 struct nlmsghdr *hdr;
2532 uint32_t seq_id;
2533 int family_id;
2534
2535 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2536 if (family_id == 0)
2537 return (ENOTSUP);
2538
2539 snl_init_writer(&h->ss, &nw);
2540 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG);
2541
2542 snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level);
2543
2544 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2545 return (ENXIO);
2546
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 }
2554
2555 return (e.error);
2556 }
2557
2558 int
pfctl_set_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t seconds)2559 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds)
2560 {
2561 struct snl_writer nw;
2562 struct snl_errmsg_data e = {};
2563 struct nlmsghdr *hdr;
2564 uint32_t seq_id;
2565 int family_id;
2566
2567 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2568 if (family_id == 0)
2569 return (ENOTSUP);
2570
2571 snl_init_writer(&h->ss, &nw);
2572 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT);
2573
2574 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2575 snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds);
2576
2577 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2578 return (ENXIO);
2579
2580 seq_id = hdr->nlmsg_seq;
2581
2582 if (! snl_send_message(&h->ss, hdr))
2583 return (ENXIO);
2584
2585 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2586 }
2587
2588 return (e.error);
2589 }
2590
2591 struct pfctl_nl_timeout {
2592 uint32_t seconds;
2593 };
2594 #define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field)
2595 static struct snl_attr_parser ap_get_timeout[] = {
2596 { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
2597 };
2598 #undef _OUT
2599 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, snl_f_p_empty, ap_get_timeout);
2600
2601 int
pfctl_get_timeout(struct pfctl_handle * h,uint32_t timeout,uint32_t * seconds)2602 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds)
2603 {
2604 struct snl_writer nw;
2605 struct pfctl_nl_timeout to = {};
2606 struct snl_errmsg_data e = {};
2607 struct nlmsghdr *hdr;
2608 uint32_t seq_id;
2609 int family_id;
2610
2611 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2612 if (family_id == 0)
2613 return (ENOTSUP);
2614
2615 snl_init_writer(&h->ss, &nw);
2616 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT);
2617 hdr->nlmsg_flags |= NLM_F_DUMP;
2618
2619 snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2620
2621 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2622 return (ENXIO);
2623
2624 seq_id = hdr->nlmsg_seq;
2625
2626 if (! snl_send_message(&h->ss, hdr))
2627 return (ENXIO);
2628
2629 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2630 if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to))
2631 continue;
2632 }
2633
2634 if (seconds != NULL)
2635 *seconds = to.seconds;
2636
2637 return (e.error);
2638 }
2639
2640 int
pfctl_set_limit(struct pfctl_handle * h,const int index,const uint limit)2641 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit)
2642 {
2643 struct snl_writer nw;
2644 struct snl_errmsg_data e = {};
2645 struct nlmsghdr *hdr;
2646 uint32_t seq_id;
2647 int family_id;
2648
2649 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2650 if (family_id == 0)
2651 return (ENOTSUP);
2652
2653 snl_init_writer(&h->ss, &nw);
2654 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT);
2655
2656 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2657 snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit);
2658
2659 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2660 return (ENXIO);
2661
2662 seq_id = hdr->nlmsg_seq;
2663
2664 if (! snl_send_message(&h->ss, hdr))
2665 return (ENXIO);
2666
2667 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2668 }
2669
2670 return (e.error);
2671 }
2672
2673 struct pfctl_nl_limit {
2674 unsigned int limit;
2675 };
2676 #define _OUT(_field) offsetof(struct pfctl_nl_limit, _field)
2677 static struct snl_attr_parser ap_get_limit[] = {
2678 { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
2679 };
2680 #undef _OUT
2681 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, snl_f_p_empty, ap_get_limit);
2682
2683 int
pfctl_get_limit(struct pfctl_handle * h,const int index,uint * limit)2684 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit)
2685 {
2686 struct snl_writer nw;
2687 struct pfctl_nl_limit li = {};
2688 struct snl_errmsg_data e = {};
2689 struct nlmsghdr *hdr;
2690 uint32_t seq_id;
2691 int family_id;
2692
2693 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2694 if (family_id == 0)
2695 return (ENOTSUP);
2696
2697 snl_init_writer(&h->ss, &nw);
2698 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT);
2699 hdr->nlmsg_flags |= NLM_F_DUMP;
2700
2701 snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2702
2703 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2704 return (ENXIO);
2705
2706 seq_id = hdr->nlmsg_seq;
2707
2708 if (! snl_send_message(&h->ss, hdr))
2709 return (ENXIO);
2710
2711 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2712 if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li))
2713 continue;
2714 }
2715
2716 if (limit != NULL)
2717 *limit = li.limit;
2718
2719 return (e.error);
2720 }
2721
2722 struct pfctl_nl_begin_addrs {
2723 uint32_t ticket;
2724 };
2725 #define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field)
2726 static struct snl_attr_parser ap_begin_addrs[] = {
2727 { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2728 };
2729 #undef _OUT
2730 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_begin_addrs);
2731
2732 int
pfctl_begin_addrs(struct pfctl_handle * h,uint32_t * ticket)2733 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket)
2734 {
2735 struct snl_writer nw;
2736 struct pfctl_nl_begin_addrs attrs = {};
2737 struct snl_errmsg_data e = {};
2738 struct nlmsghdr *hdr;
2739 uint32_t seq_id;
2740 int family_id;
2741
2742 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2743 if (family_id == 0)
2744 return (ENOTSUP);
2745
2746 snl_init_writer(&h->ss, &nw);
2747 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS);
2748 hdr->nlmsg_flags |= NLM_F_DUMP;
2749
2750 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2751 return (ENXIO);
2752
2753 seq_id = hdr->nlmsg_seq;
2754
2755 if (! snl_send_message(&h->ss, hdr))
2756 return (ENXIO);
2757
2758 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2759 if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs))
2760 continue;
2761 }
2762
2763 if (ticket != NULL)
2764 *ticket = attrs.ticket;
2765
2766 return (e.error);
2767 }
2768
2769 int
pfctl_add_addr(struct pfctl_handle * h,const struct pfioc_pooladdr * pa,int which)2770 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which)
2771 {
2772 struct snl_writer nw;
2773 struct snl_errmsg_data e = {};
2774 struct nlmsghdr *hdr;
2775 uint32_t seq_id;
2776 int family_id;
2777
2778 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2779 if (family_id == 0)
2780 return (ENOTSUP);
2781
2782 snl_init_writer(&h->ss, &nw);
2783 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR);
2784
2785 snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action);
2786 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket);
2787 snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr);
2788 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num);
2789 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action);
2790 snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last);
2791 snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af);
2792 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor);
2793 snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr);
2794 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
2795
2796 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2797 return (ENXIO);
2798
2799 seq_id = hdr->nlmsg_seq;
2800
2801 if (! snl_send_message(&h->ss, hdr))
2802 return (ENXIO);
2803
2804 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2805 }
2806
2807 return (e.error);
2808 }
2809
2810 static const struct snl_attr_parser ap_get_addrs[] = {
2811 { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 },
2812 };
2813 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addrs);
2814
2815 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)2816 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2817 uint8_t r_action, const char *anchor, uint32_t *nr, int which)
2818 {
2819 struct snl_writer nw;
2820 struct snl_errmsg_data e = {};
2821 struct nlmsghdr *hdr;
2822 uint32_t seq_id;
2823 int family_id;
2824
2825 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2826 if (family_id == 0)
2827 return (ENOTSUP);
2828
2829 snl_init_writer(&h->ss, &nw);
2830 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS);
2831
2832 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2833 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2834 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2835 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2836 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
2837
2838 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2839 return (ENXIO);
2840
2841 seq_id = hdr->nlmsg_seq;
2842
2843 if (! snl_send_message(&h->ss, hdr))
2844 return (ENXIO);
2845
2846 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2847 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr))
2848 continue;
2849 }
2850
2851 return (e.error);
2852 }
2853
2854 #define _OUT(_field) offsetof(struct pf_pooladdr, _field)
2855 static const struct snl_attr_parser ap_pool_addr[] = {
2856 { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
2857 { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
2858 };
2859 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr);
2860 #undef _OUT
2861
2862 #define _OUT(_field) offsetof(struct pfioc_pooladdr, _field)
2863 static const struct snl_attr_parser ap_get_addr[] = {
2864 { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 },
2865 { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2866 { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
2867 { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 },
2868 { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 },
2869 { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 },
2870 { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
2871 { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string },
2872 { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested },
2873 };
2874 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addr);
2875 #undef _OUT
2876
2877 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)2878 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2879 uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa,
2880 int which)
2881 {
2882 struct snl_writer nw;
2883 struct snl_errmsg_data e = {};
2884 struct nlmsghdr *hdr;
2885 uint32_t seq_id;
2886 int family_id;
2887
2888 family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2889 if (family_id == 0)
2890 return (ENOTSUP);
2891
2892 snl_init_writer(&h->ss, &nw);
2893 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR);
2894
2895 snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2896 snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2897 snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2898 snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2899 snl_add_msg_attr_u32(&nw, PF_AA_NR, nr);
2900 snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
2901
2902 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2903 return (ENXIO);
2904
2905 seq_id = hdr->nlmsg_seq;
2906
2907 if (! snl_send_message(&h->ss, hdr))
2908 return (ENXIO);
2909
2910 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2911 if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa))
2912 continue;
2913 }
2914
2915 return (e.error);
2916 }
2917
2918 #define _OUT(_field) offsetof(struct pfioc_ruleset, _field)
2919 static const struct snl_attr_parser ap_ruleset[] = {
2920 { .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
2921 { .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string },
2922 };
2923 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, snl_f_p_empty, ap_ruleset);
2924 #undef _OUT
2925
2926 int
pfctl_get_rulesets(struct pfctl_handle * h,const char * path,uint32_t * nr)2927 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr)
2928 {
2929 struct snl_writer nw;
2930 struct snl_errmsg_data e = {};
2931 struct nlmsghdr *hdr;
2932 struct pfioc_ruleset rs = {};
2933 uint32_t seq_id;
2934 int family_id;
2935
2936 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2937 if (family_id == 0)
2938 return (ENOTSUP);
2939
2940 snl_init_writer(&h->ss, &nw);
2941 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS);
2942
2943 snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
2944
2945 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2946 return (ENXIO);
2947
2948 seq_id = hdr->nlmsg_seq;
2949
2950 if (! snl_send_message(&h->ss, hdr))
2951 return (ENXIO);
2952
2953 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2954 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs))
2955 continue;
2956 }
2957
2958 *nr = rs.nr;
2959
2960 return (e.error);
2961 }
2962
2963 int
pfctl_get_ruleset(struct pfctl_handle * h,const char * path,uint32_t nr,struct pfioc_ruleset * rs)2964 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs)
2965 {
2966 struct snl_writer nw;
2967 struct snl_errmsg_data e = {};
2968 struct nlmsghdr *hdr;
2969 uint32_t seq_id;
2970 int family_id;
2971
2972 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2973 if (family_id == 0)
2974 return (ENOTSUP);
2975
2976 snl_init_writer(&h->ss, &nw);
2977 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET);
2978
2979 snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
2980 snl_add_msg_attr_u32(&nw, PF_RS_NR, nr);
2981
2982 if ((hdr = snl_finalize_msg(&nw)) == NULL)
2983 return (ENXIO);
2984
2985 seq_id = hdr->nlmsg_seq;
2986
2987 if (! snl_send_message(&h->ss, hdr))
2988 return (ENXIO);
2989
2990 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2991 if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs))
2992 continue;
2993 }
2994
2995 return (e.error);
2996 }
2997
2998 #define _OUT(_field) offsetof(struct pfctl_threshold, _field)
2999 static const struct snl_attr_parser ap_pfctl_threshold[] = {
3000 { .type = PF_TH_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
3001 { .type = PF_TH_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
3002 { .type = PF_TH_COUNT, .off = _OUT(count), .cb = snl_attr_get_uint32 },
3003 { .type = PF_TH_LAST, .off = _OUT(last), .cb = snl_attr_get_uint32 },
3004 };
3005 SNL_DECLARE_ATTR_PARSER(pfctl_threshold_parser, ap_pfctl_threshold);
3006 #undef _OUT
3007
3008 #define _OUT(_field) offsetof(struct pfctl_src_node, _field)
3009 static struct snl_attr_parser ap_srcnode[] = {
3010 { .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr },
3011 { .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr },
3012 { .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
3013 { .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
3014 { .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
3015 { .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
3016 { .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
3017 { .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
3018 { .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 },
3019 { .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
3020 { .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 },
3021 { .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 },
3022 { .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 },
3023 { .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested },
3024 { .type = PF_SN_NAF, .off = _OUT(naf), .cb = snl_attr_get_uint8 },
3025 { .type = PF_SN_NODE_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 },
3026 };
3027 #undef _OUT
3028 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, snl_f_p_empty, ap_srcnode);
3029
3030 int
pfctl_get_srcnodes(struct pfctl_handle * h,pfctl_get_srcnode_fn fn,void * arg)3031 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg)
3032 {
3033 struct snl_writer nw;
3034 struct pfctl_src_node sn;
3035 struct snl_errmsg_data e = {};
3036 struct nlmsghdr *hdr;
3037 uint32_t seq_id;
3038 int family_id;
3039 int ret;
3040
3041 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3042 if (family_id == 0)
3043 return (ENOTSUP);
3044
3045 snl_init_writer(&h->ss, &nw);
3046 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES);
3047
3048 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3049 return (ENXIO);
3050
3051 seq_id = hdr->nlmsg_seq;
3052
3053 if (!snl_send_message(&h->ss, hdr))
3054 return (ENXIO);
3055
3056 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3057 if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn))
3058 continue;
3059
3060 ret = fn(&sn, arg);
3061 if (ret != 0)
3062 return (ret);
3063 }
3064
3065 return (e.error);
3066 }
3067
3068 static struct snl_attr_parser ap_ndel[] = {
3069 { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 },
3070 };
3071 SNL_DECLARE_PARSER(ndel_parser, struct genlmsghdr, snl_f_p_empty, ap_ndel);
3072
3073 int
pfctl_clear_tables(struct pfctl_handle * h,struct pfr_table * filter,int * ndel,int flags)3074 pfctl_clear_tables(struct pfctl_handle *h, struct pfr_table *filter,
3075 int *ndel, int flags)
3076 {
3077 struct snl_writer nw;
3078 struct snl_errmsg_data e = {};
3079 struct nlmsghdr *hdr;
3080 uint32_t seq_id;
3081 int family_id;
3082
3083 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3084 if (family_id == 0)
3085 return (ENOTSUP);
3086
3087 snl_init_writer(&h->ss, &nw);
3088 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLEAR_TABLES);
3089
3090 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor);
3091 snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name);
3092 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags);
3093 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3094
3095 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3096 return (ENXIO);
3097
3098 seq_id = hdr->nlmsg_seq;
3099
3100 if (!snl_send_message(&h->ss, hdr))
3101 return (ENXIO);
3102
3103 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3104 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel))
3105 continue;
3106 }
3107
3108 return (e.error);
3109 }
3110
3111 static struct snl_attr_parser ap_nadd[] = {
3112 { .type = PF_T_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 },
3113 };
3114 SNL_DECLARE_PARSER(nadd_parser, struct genlmsghdr, snl_f_p_empty, ap_nadd);
3115 int
pfctl_add_table(struct pfctl_handle * h,struct pfr_table * table,int * nadd,int flags)3116 pfctl_add_table(struct pfctl_handle *h, struct pfr_table *table,
3117 int *nadd, int flags)
3118 {
3119 struct snl_writer nw;
3120 struct snl_errmsg_data e = {};
3121 struct nlmsghdr *hdr;
3122 uint32_t seq_id;
3123 int family_id;
3124
3125 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3126 if (family_id == 0)
3127 return (ENOTSUP);
3128
3129 snl_init_writer(&h->ss, &nw);
3130 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_TABLE);
3131
3132 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor);
3133 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name);
3134 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags);
3135 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3136
3137 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3138 return (ENXIO);
3139
3140 seq_id = hdr->nlmsg_seq;
3141
3142 if (!snl_send_message(&h->ss, hdr))
3143 return (ENXIO);
3144
3145 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3146 if (!snl_parse_nlmsg(&h->ss, hdr, &nadd_parser, nadd))
3147 continue;
3148 }
3149
3150 return (e.error);
3151 }
3152
3153 int
pfctl_del_table(struct pfctl_handle * h,struct pfr_table * table,int * ndel,int flags)3154 pfctl_del_table(struct pfctl_handle *h, struct pfr_table *table,
3155 int *ndel, int flags)
3156 {
3157 struct snl_writer nw;
3158 struct snl_errmsg_data e = {};
3159 struct nlmsghdr *hdr;
3160 uint32_t seq_id;
3161 int family_id;
3162
3163 family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3164 if (family_id == 0)
3165 return (ENOTSUP);
3166
3167 snl_init_writer(&h->ss, &nw);
3168 hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_DEL_TABLE);
3169
3170 snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor);
3171 snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name);
3172 snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags);
3173 snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3174
3175 if ((hdr = snl_finalize_msg(&nw)) == NULL)
3176 return (ENXIO);
3177
3178 seq_id = hdr->nlmsg_seq;
3179
3180 if (!snl_send_message(&h->ss, hdr))
3181 return (ENXIO);
3182
3183 while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3184 if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel))
3185 continue;
3186 }
3187
3188 return (e.error);
3189 }
3190
3191