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 <assert.h>
44 #include <err.h>
45 #include <errno.h>
46 #include <stdlib.h>
47 #include <string.h>
48
49 #include "libpfctl.h"
50
51 const char* PFCTL_SYNCOOKIES_MODE_NAMES[] = {
52 "never",
53 "always",
54 "adaptive"
55 };
56
57 static int _pfctl_clear_states(int , const struct pfctl_kill *,
58 unsigned int *, uint64_t);
59
60 static int
pfctl_do_ioctl(int dev,uint cmd,size_t size,nvlist_t ** nvl)61 pfctl_do_ioctl(int dev, uint cmd, size_t size, nvlist_t **nvl)
62 {
63 struct pfioc_nv nv;
64 void *data;
65 size_t nvlen;
66 int ret;
67
68 data = nvlist_pack(*nvl, &nvlen);
69 if (nvlen > size)
70 size = nvlen;
71
72 retry:
73 nv.data = malloc(size);
74 if (nv.data == NULL) {
75 ret = ENOMEM;
76 goto out;
77 }
78
79 memcpy(nv.data, data, nvlen);
80
81 nv.len = nvlen;
82 nv.size = size;
83
84 ret = ioctl(dev, cmd, &nv);
85 if (ret == -1 && errno == ENOSPC) {
86 size *= 2;
87 free(nv.data);
88 goto retry;
89 }
90
91 nvlist_destroy(*nvl);
92 *nvl = NULL;
93
94 if (ret == 0) {
95 *nvl = nvlist_unpack(nv.data, nv.len, 0);
96 if (*nvl == NULL) {
97 ret = EIO;
98 goto out;
99 }
100 } else {
101 ret = errno;
102 }
103
104 out:
105 free(data);
106 free(nv.data);
107
108 return (ret);
109 }
110
111 static void
pf_nvuint_8_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint8_t * numbers,size_t * nelems)112 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems,
113 uint8_t *numbers, size_t *nelems)
114 {
115 const uint64_t *tmp;
116 size_t elems;
117
118 tmp = nvlist_get_number_array(nvl, name, &elems);
119 assert(elems <= maxelems);
120
121 for (size_t i = 0; i < elems; i++)
122 numbers[i] = tmp[i];
123
124 if (nelems)
125 *nelems = elems;
126 }
127
128 static void
pf_nvuint_16_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint16_t * numbers,size_t * nelems)129 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems,
130 uint16_t *numbers, size_t *nelems)
131 {
132 const uint64_t *tmp;
133 size_t elems;
134
135 tmp = nvlist_get_number_array(nvl, name, &elems);
136 assert(elems <= maxelems);
137
138 for (size_t i = 0; i < elems; i++)
139 numbers[i] = tmp[i];
140
141 if (nelems)
142 *nelems = elems;
143 }
144
145 static void
pf_nvuint_32_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint32_t * numbers,size_t * nelems)146 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems,
147 uint32_t *numbers, size_t *nelems)
148 {
149 const uint64_t *tmp;
150 size_t elems;
151
152 tmp = nvlist_get_number_array(nvl, name, &elems);
153
154 for (size_t i = 0; i < elems && i < maxelems; i++)
155 numbers[i] = tmp[i];
156
157 if (nelems)
158 *nelems = elems;
159 }
160
161 static void
pf_nvuint_64_array(const nvlist_t * nvl,const char * name,size_t maxelems,uint64_t * numbers,size_t * nelems)162 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems,
163 uint64_t *numbers, size_t *nelems)
164 {
165 const uint64_t *tmp;
166 size_t elems;
167
168 tmp = nvlist_get_number_array(nvl, name, &elems);
169 assert(elems <= maxelems);
170
171 for (size_t i = 0; i < elems; i++)
172 numbers[i] = tmp[i];
173
174 if (nelems)
175 *nelems = elems;
176 }
177
178 static void
_pfctl_get_status_counters(const nvlist_t * nvl,struct pfctl_status_counters * counters)179 _pfctl_get_status_counters(const nvlist_t *nvl,
180 struct pfctl_status_counters *counters)
181 {
182 const uint64_t *ids, *counts;
183 const char *const *names;
184 size_t id_len, counter_len, names_len;
185
186 ids = nvlist_get_number_array(nvl, "ids", &id_len);
187 counts = nvlist_get_number_array(nvl, "counters", &counter_len);
188 names = nvlist_get_string_array(nvl, "names", &names_len);
189 assert(id_len == counter_len);
190 assert(counter_len == names_len);
191
192 TAILQ_INIT(counters);
193
194 for (size_t i = 0; i < id_len; i++) {
195 struct pfctl_status_counter *c;
196
197 c = malloc(sizeof(*c));
198 if (c == NULL)
199 continue;
200
201 c->id = ids[i];
202 c->counter = counts[i];
203 c->name = strdup(names[i]);
204
205 TAILQ_INSERT_TAIL(counters, c, entry);
206 }
207 }
208
209 struct pfctl_status *
pfctl_get_status(int dev)210 pfctl_get_status(int dev)
211 {
212 struct pfctl_status *status;
213 nvlist_t *nvl;
214 size_t len;
215 const void *chksum;
216
217 status = calloc(1, sizeof(*status));
218 if (status == NULL)
219 return (NULL);
220
221 nvl = nvlist_create(0);
222
223 if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) {
224 nvlist_destroy(nvl);
225 free(status);
226 return (NULL);
227 }
228
229 status->running = nvlist_get_bool(nvl, "running");
230 status->since = nvlist_get_number(nvl, "since");
231 status->debug = nvlist_get_number(nvl, "debug");
232 status->hostid = ntohl(nvlist_get_number(nvl, "hostid"));
233 status->states = nvlist_get_number(nvl, "states");
234 status->src_nodes = nvlist_get_number(nvl, "src_nodes");
235 status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active");
236
237 strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"),
238 IFNAMSIZ);
239 chksum = nvlist_get_binary(nvl, "chksum", &len);
240 assert(len == PF_MD5_DIGEST_LENGTH);
241 memcpy(status->pf_chksum, chksum, len);
242
243 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"),
244 &status->counters);
245 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"),
246 &status->lcounters);
247 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"),
248 &status->fcounters);
249 _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"),
250 &status->scounters);
251
252 pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2,
253 (uint64_t *)status->pcounters, NULL);
254 pf_nvuint_64_array(nvl, "bcounters", 2 * 2,
255 (uint64_t *)status->bcounters, NULL);
256
257 nvlist_destroy(nvl);
258
259 return (status);
260 }
261
262 static uint64_t
_pfctl_status_counter(struct pfctl_status_counters * counters,uint64_t id)263 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id)
264 {
265 struct pfctl_status_counter *c;
266
267 TAILQ_FOREACH(c, counters, entry) {
268 if (c->id == id)
269 return (c->counter);
270 }
271
272 return (0);
273 }
274
275 uint64_t
pfctl_status_counter(struct pfctl_status * status,int id)276 pfctl_status_counter(struct pfctl_status *status, int id)
277 {
278 return (_pfctl_status_counter(&status->counters, id));
279 }
280
281 uint64_t
pfctl_status_lcounter(struct pfctl_status * status,int id)282 pfctl_status_lcounter(struct pfctl_status *status, int id)
283 {
284 return (_pfctl_status_counter(&status->lcounters, id));
285 }
286
287 uint64_t
pfctl_status_fcounter(struct pfctl_status * status,int id)288 pfctl_status_fcounter(struct pfctl_status *status, int id)
289 {
290 return (_pfctl_status_counter(&status->fcounters, id));
291 }
292
293 uint64_t
pfctl_status_scounter(struct pfctl_status * status,int id)294 pfctl_status_scounter(struct pfctl_status *status, int id)
295 {
296 return (_pfctl_status_counter(&status->scounters, id));
297 }
298
299 void
pfctl_free_status(struct pfctl_status * status)300 pfctl_free_status(struct pfctl_status *status)
301 {
302 struct pfctl_status_counter *c, *tmp;
303
304 if (status == NULL)
305 return;
306
307 TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) {
308 free(c->name);
309 free(c);
310 }
311 TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) {
312 free(c->name);
313 free(c);
314 }
315 TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) {
316 free(c->name);
317 free(c);
318 }
319 TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) {
320 free(c->name);
321 free(c);
322 }
323
324 free(status);
325 }
326
327 static void
pfctl_nv_add_addr(nvlist_t * nvparent,const char * name,const struct pf_addr * addr)328 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name,
329 const struct pf_addr *addr)
330 {
331 nvlist_t *nvl = nvlist_create(0);
332
333 nvlist_add_binary(nvl, "addr", addr, sizeof(*addr));
334
335 nvlist_add_nvlist(nvparent, name, nvl);
336 nvlist_destroy(nvl);
337 }
338
339 static void
pf_nvaddr_to_addr(const nvlist_t * nvl,struct pf_addr * addr)340 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr)
341 {
342 size_t len;
343 const void *data;
344
345 data = nvlist_get_binary(nvl, "addr", &len);
346 assert(len == sizeof(struct pf_addr));
347 memcpy(addr, data, len);
348 }
349
350 static void
pfctl_nv_add_addr_wrap(nvlist_t * nvparent,const char * name,const struct pf_addr_wrap * addr)351 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name,
352 const struct pf_addr_wrap *addr)
353 {
354 nvlist_t *nvl = nvlist_create(0);
355
356 nvlist_add_number(nvl, "type", addr->type);
357 nvlist_add_number(nvl, "iflags", addr->iflags);
358 if (addr->type == PF_ADDR_DYNIFTL)
359 nvlist_add_string(nvl, "ifname", addr->v.ifname);
360 if (addr->type == PF_ADDR_TABLE)
361 nvlist_add_string(nvl, "tblname", addr->v.tblname);
362 pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr);
363 pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask);
364
365 nvlist_add_nvlist(nvparent, name, nvl);
366 nvlist_destroy(nvl);
367 }
368
369 static void
pf_nvaddr_wrap_to_addr_wrap(const nvlist_t * nvl,struct pf_addr_wrap * addr)370 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr)
371 {
372 bzero(addr, sizeof(*addr));
373
374 addr->type = nvlist_get_number(nvl, "type");
375 addr->iflags = nvlist_get_number(nvl, "iflags");
376 if (addr->type == PF_ADDR_DYNIFTL) {
377 strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"),
378 IFNAMSIZ);
379 addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt");
380 }
381 if (addr->type == PF_ADDR_TABLE) {
382 strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"),
383 PF_TABLE_NAME_SIZE);
384 addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt");
385 }
386
387 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr);
388 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask);
389 }
390
391 static void
pfctl_nv_add_rule_addr(nvlist_t * nvparent,const char * name,const struct pf_rule_addr * addr)392 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name,
393 const struct pf_rule_addr *addr)
394 {
395 uint64_t ports[2];
396 nvlist_t *nvl = nvlist_create(0);
397
398 pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr);
399 ports[0] = addr->port[0];
400 ports[1] = addr->port[1];
401 nvlist_add_number_array(nvl, "port", ports, 2);
402 nvlist_add_number(nvl, "neg", addr->neg);
403 nvlist_add_number(nvl, "port_op", addr->port_op);
404
405 nvlist_add_nvlist(nvparent, name, nvl);
406 nvlist_destroy(nvl);
407 }
408
409 static void
pf_nvrule_addr_to_rule_addr(const nvlist_t * nvl,struct pf_rule_addr * addr)410 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr)
411 {
412 pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr);
413
414 pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL);
415 addr->neg = nvlist_get_number(nvl, "neg");
416 addr->port_op = nvlist_get_number(nvl, "port_op");
417 }
418
419 static void
pfctl_nv_add_mape(nvlist_t * nvparent,const char * name,const struct pf_mape_portset * mape)420 pfctl_nv_add_mape(nvlist_t *nvparent, const char *name,
421 const struct pf_mape_portset *mape)
422 {
423 nvlist_t *nvl = nvlist_create(0);
424
425 nvlist_add_number(nvl, "offset", mape->offset);
426 nvlist_add_number(nvl, "psidlen", mape->psidlen);
427 nvlist_add_number(nvl, "psid", mape->psid);
428 nvlist_add_nvlist(nvparent, name, nvl);
429 nvlist_destroy(nvl);
430 }
431
432 static void
pfctl_nv_add_pool(nvlist_t * nvparent,const char * name,const struct pfctl_pool * pool)433 pfctl_nv_add_pool(nvlist_t *nvparent, const char *name,
434 const struct pfctl_pool *pool)
435 {
436 uint64_t ports[2];
437 nvlist_t *nvl = nvlist_create(0);
438
439 nvlist_add_binary(nvl, "key", &pool->key, sizeof(pool->key));
440 pfctl_nv_add_addr(nvl, "counter", &pool->counter);
441 nvlist_add_number(nvl, "tblidx", pool->tblidx);
442
443 ports[0] = pool->proxy_port[0];
444 ports[1] = pool->proxy_port[1];
445 nvlist_add_number_array(nvl, "proxy_port", ports, 2);
446 nvlist_add_number(nvl, "opts", pool->opts);
447 pfctl_nv_add_mape(nvl, "mape", &pool->mape);
448
449 nvlist_add_nvlist(nvparent, name, nvl);
450 nvlist_destroy(nvl);
451 }
452
453 static void
pf_nvmape_to_mape(const nvlist_t * nvl,struct pf_mape_portset * mape)454 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape)
455 {
456 mape->offset = nvlist_get_number(nvl, "offset");
457 mape->psidlen = nvlist_get_number(nvl, "psidlen");
458 mape->psid = nvlist_get_number(nvl, "psid");
459 }
460
461 static void
pf_nvpool_to_pool(const nvlist_t * nvl,struct pfctl_pool * pool)462 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool)
463 {
464 size_t len;
465 const void *data;
466
467 data = nvlist_get_binary(nvl, "key", &len);
468 assert(len == sizeof(pool->key));
469 memcpy(&pool->key, data, len);
470
471 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter);
472
473 pool->tblidx = nvlist_get_number(nvl, "tblidx");
474 pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL);
475 pool->opts = nvlist_get_number(nvl, "opts");
476
477 if (nvlist_exists_nvlist(nvl, "mape"))
478 pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape);
479 }
480
481 static void
pfctl_nv_add_uid(nvlist_t * nvparent,const char * name,const struct pf_rule_uid * uid)482 pfctl_nv_add_uid(nvlist_t *nvparent, const char *name,
483 const struct pf_rule_uid *uid)
484 {
485 uint64_t uids[2];
486 nvlist_t *nvl = nvlist_create(0);
487
488 uids[0] = uid->uid[0];
489 uids[1] = uid->uid[1];
490 nvlist_add_number_array(nvl, "uid", uids, 2);
491 nvlist_add_number(nvl, "op", uid->op);
492
493 nvlist_add_nvlist(nvparent, name, nvl);
494 nvlist_destroy(nvl);
495 }
496
497 static void
pf_nvrule_uid_to_rule_uid(const nvlist_t * nvl,struct pf_rule_uid * uid)498 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid)
499 {
500 pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL);
501 uid->op = nvlist_get_number(nvl, "op");
502 }
503
504 static void
pfctl_nv_add_divert(nvlist_t * nvparent,const char * name,const struct pfctl_rule * r)505 pfctl_nv_add_divert(nvlist_t *nvparent, const char *name,
506 const struct pfctl_rule *r)
507 {
508 nvlist_t *nvl = nvlist_create(0);
509
510 pfctl_nv_add_addr(nvl, "addr", &r->divert.addr);
511 nvlist_add_number(nvl, "port", r->divert.port);
512
513 nvlist_add_nvlist(nvparent, name, nvl);
514 nvlist_destroy(nvl);
515 }
516
517 static void
pf_nvdivert_to_divert(const nvlist_t * nvl,struct pfctl_rule * rule)518 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule)
519 {
520 pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr);
521 rule->divert.port = nvlist_get_number(nvl, "port");
522 }
523
524 static void
pf_nvrule_to_rule(const nvlist_t * nvl,struct pfctl_rule * rule)525 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule)
526 {
527 const uint64_t *skip;
528 const char *const *labels;
529 size_t skipcount, labelcount;
530
531 rule->nr = nvlist_get_number(nvl, "nr");
532
533 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src);
534 pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst);
535
536 skip = nvlist_get_number_array(nvl, "skip", &skipcount);
537 assert(skip);
538 assert(skipcount == PF_SKIP_COUNT);
539 for (int i = 0; i < PF_SKIP_COUNT; i++)
540 rule->skip[i].nr = skip[i];
541
542 labels = nvlist_get_string_array(nvl, "labels", &labelcount);
543 assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
544 for (size_t i = 0; i < labelcount; i++)
545 strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
546 rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
547 strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
548 strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
549 strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE);
550 strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
551 PF_TAG_NAME_SIZE);
552 strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
553 PF_TAG_NAME_SIZE);
554
555 strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"),
556 PF_TABLE_NAME_SIZE);
557
558 pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool);
559
560 rule->evaluations = nvlist_get_number(nvl, "evaluations");
561 pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL);
562 pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL);
563
564 rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint");
565
566 rule->rtableid = nvlist_get_number(nvl, "rtableid");
567 pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL);
568 rule->max_states = nvlist_get_number(nvl, "max_states");
569 rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes");
570 rule->max_src_states = nvlist_get_number(nvl, "max_src_states");
571 rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn");
572 rule->max_src_conn_rate.limit =
573 nvlist_get_number(nvl, "max_src_conn_rate.limit");
574 rule->max_src_conn_rate.seconds =
575 nvlist_get_number(nvl, "max_src_conn_rate.seconds");
576 rule->qid = nvlist_get_number(nvl, "qid");
577 rule->pqid = nvlist_get_number(nvl, "pqid");
578 rule->prob = nvlist_get_number(nvl, "prob");
579 rule->cuid = nvlist_get_number(nvl, "cuid");
580 rule->cpid = nvlist_get_number(nvl, "cpid");
581
582 rule->return_icmp = nvlist_get_number(nvl, "return_icmp");
583 rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6");
584 rule->max_mss = nvlist_get_number(nvl, "max_mss");
585 rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags");
586
587 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid);
588 pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"),
589 (struct pf_rule_uid *)&rule->gid);
590
591 rule->rule_flag = nvlist_get_number(nvl, "rule_flag");
592 rule->action = nvlist_get_number(nvl, "action");
593 rule->direction = nvlist_get_number(nvl, "direction");
594 rule->log = nvlist_get_number(nvl, "log");
595 rule->logif = nvlist_get_number(nvl, "logif");
596 rule->quick = nvlist_get_number(nvl, "quick");
597 rule->ifnot = nvlist_get_number(nvl, "ifnot");
598 rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not");
599 rule->natpass = nvlist_get_number(nvl, "natpass");
600
601 rule->keep_state = nvlist_get_number(nvl, "keep_state");
602 rule->af = nvlist_get_number(nvl, "af");
603 rule->proto = nvlist_get_number(nvl, "proto");
604 rule->type = nvlist_get_number(nvl, "type");
605 rule->code = nvlist_get_number(nvl, "code");
606 rule->flags = nvlist_get_number(nvl, "flags");
607 rule->flagset = nvlist_get_number(nvl, "flagset");
608 rule->min_ttl = nvlist_get_number(nvl, "min_ttl");
609 rule->allow_opts = nvlist_get_number(nvl, "allow_opts");
610 rule->rt = nvlist_get_number(nvl, "rt");
611 rule->return_ttl = nvlist_get_number(nvl, "return_ttl");
612 rule->tos = nvlist_get_number(nvl, "tos");
613 rule->set_tos = nvlist_get_number(nvl, "set_tos");
614 rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
615 rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
616
617 rule->flush = nvlist_get_number(nvl, "flush");
618 rule->prio = nvlist_get_number(nvl, "prio");
619 pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL);
620
621 pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule);
622
623 rule->states_cur = nvlist_get_number(nvl, "states_cur");
624 rule->states_tot = nvlist_get_number(nvl, "states_tot");
625 rule->src_nodes = nvlist_get_number(nvl, "src_nodes");
626 }
627
628 int
pfctl_add_rule(int dev,const struct pfctl_rule * r,const char * anchor,const char * anchor_call,uint32_t ticket,uint32_t pool_ticket)629 pfctl_add_rule(int dev, const struct pfctl_rule *r, const char *anchor,
630 const char *anchor_call, uint32_t ticket, uint32_t pool_ticket)
631 {
632 struct pfioc_nv nv;
633 uint64_t timeouts[PFTM_MAX];
634 uint64_t set_prio[2];
635 nvlist_t *nvl, *nvlr;
636 size_t labelcount;
637 int ret;
638
639 nvl = nvlist_create(0);
640 nvlr = nvlist_create(0);
641
642 nvlist_add_number(nvl, "ticket", ticket);
643 nvlist_add_number(nvl, "pool_ticket", pool_ticket);
644 nvlist_add_string(nvl, "anchor", anchor);
645 nvlist_add_string(nvl, "anchor_call", anchor_call);
646
647 nvlist_add_number(nvlr, "nr", r->nr);
648 pfctl_nv_add_rule_addr(nvlr, "src", &r->src);
649 pfctl_nv_add_rule_addr(nvlr, "dst", &r->dst);
650
651 labelcount = 0;
652 while (labelcount < PF_RULE_MAX_LABEL_COUNT &&
653 r->label[labelcount][0] != 0) {
654 nvlist_append_string_array(nvlr, "labels",
655 r->label[labelcount]);
656 labelcount++;
657 }
658 nvlist_add_number(nvlr, "ridentifier", r->ridentifier);
659
660 nvlist_add_string(nvlr, "ifname", r->ifname);
661 nvlist_add_string(nvlr, "qname", r->qname);
662 nvlist_add_string(nvlr, "pqname", r->pqname);
663 nvlist_add_string(nvlr, "tagname", r->tagname);
664 nvlist_add_string(nvlr, "match_tagname", r->match_tagname);
665 nvlist_add_string(nvlr, "overload_tblname", r->overload_tblname);
666
667 pfctl_nv_add_pool(nvlr, "rpool", &r->rpool);
668
669 nvlist_add_number(nvlr, "os_fingerprint", r->os_fingerprint);
670
671 nvlist_add_number(nvlr, "rtableid", r->rtableid);
672 for (int i = 0; i < PFTM_MAX; i++)
673 timeouts[i] = r->timeout[i];
674 nvlist_add_number_array(nvlr, "timeout", timeouts, PFTM_MAX);
675 nvlist_add_number(nvlr, "max_states", r->max_states);
676 nvlist_add_number(nvlr, "max_src_nodes", r->max_src_nodes);
677 nvlist_add_number(nvlr, "max_src_states", r->max_src_states);
678 nvlist_add_number(nvlr, "max_src_conn", r->max_src_conn);
679 nvlist_add_number(nvlr, "max_src_conn_rate.limit",
680 r->max_src_conn_rate.limit);
681 nvlist_add_number(nvlr, "max_src_conn_rate.seconds",
682 r->max_src_conn_rate.seconds);
683 nvlist_add_number(nvlr, "prob", r->prob);
684 nvlist_add_number(nvlr, "cuid", r->cuid);
685 nvlist_add_number(nvlr, "cpid", r->cpid);
686
687 nvlist_add_number(nvlr, "return_icmp", r->return_icmp);
688 nvlist_add_number(nvlr, "return_icmp6", r->return_icmp6);
689
690 nvlist_add_number(nvlr, "max_mss", r->max_mss);
691 nvlist_add_number(nvlr, "scrub_flags", r->scrub_flags);
692
693 pfctl_nv_add_uid(nvlr, "uid", &r->uid);
694 pfctl_nv_add_uid(nvlr, "gid", (const struct pf_rule_uid *)&r->gid);
695
696 nvlist_add_number(nvlr, "rule_flag", r->rule_flag);
697 nvlist_add_number(nvlr, "action", r->action);
698 nvlist_add_number(nvlr, "direction", r->direction);
699 nvlist_add_number(nvlr, "log", r->log);
700 nvlist_add_number(nvlr, "logif", r->logif);
701 nvlist_add_number(nvlr, "quick", r->quick);
702 nvlist_add_number(nvlr, "ifnot", r->ifnot);
703 nvlist_add_number(nvlr, "match_tag_not", r->match_tag_not);
704 nvlist_add_number(nvlr, "natpass", r->natpass);
705
706 nvlist_add_number(nvlr, "keep_state", r->keep_state);
707 nvlist_add_number(nvlr, "af", r->af);
708 nvlist_add_number(nvlr, "proto", r->proto);
709 nvlist_add_number(nvlr, "type", r->type);
710 nvlist_add_number(nvlr, "code", r->code);
711 nvlist_add_number(nvlr, "flags", r->flags);
712 nvlist_add_number(nvlr, "flagset", r->flagset);
713 nvlist_add_number(nvlr, "min_ttl", r->min_ttl);
714 nvlist_add_number(nvlr, "allow_opts", r->allow_opts);
715 nvlist_add_number(nvlr, "rt", r->rt);
716 nvlist_add_number(nvlr, "return_ttl", r->return_ttl);
717 nvlist_add_number(nvlr, "tos", r->tos);
718 nvlist_add_number(nvlr, "set_tos", r->set_tos);
719 nvlist_add_number(nvlr, "anchor_relative", r->anchor_relative);
720 nvlist_add_number(nvlr, "anchor_wildcard", r->anchor_wildcard);
721
722 nvlist_add_number(nvlr, "flush", r->flush);
723
724 nvlist_add_number(nvlr, "prio", r->prio);
725 set_prio[0] = r->set_prio[0];
726 set_prio[1] = r->set_prio[1];
727 nvlist_add_number_array(nvlr, "set_prio", set_prio, 2);
728
729 pfctl_nv_add_divert(nvlr, "divert", r);
730
731 nvlist_add_nvlist(nvl, "rule", nvlr);
732 nvlist_destroy(nvlr);
733
734 /* Now do the call. */
735 nv.data = nvlist_pack(nvl, &nv.len);
736 nv.size = nv.len;
737
738 ret = ioctl(dev, DIOCADDRULENV, &nv);
739
740 free(nv.data);
741 nvlist_destroy(nvl);
742
743 return (ret);
744 }
745
746 int
pfctl_get_rules_info(int dev,struct pfctl_rules_info * rules,uint32_t ruleset,const char * path)747 pfctl_get_rules_info(int dev, struct pfctl_rules_info *rules, uint32_t ruleset,
748 const char *path)
749 {
750 struct pfioc_rule pr;
751 int ret;
752
753 bzero(&pr, sizeof(pr));
754 if (strlcpy(pr.anchor, path, sizeof(pr.anchor)) >= sizeof(pr.anchor))
755 return (E2BIG);
756
757 pr.rule.action = ruleset;
758 ret = ioctl(dev, DIOCGETRULES, &pr);
759 if (ret != 0)
760 return (ret);
761
762 rules->nr = pr.nr;
763 rules->ticket = pr.ticket;
764
765 return (0);
766 }
767
768 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)769 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor,
770 uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
771 {
772 return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule,
773 anchor_call, false));
774 }
775
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)776 int pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket,
777 const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
778 char *anchor_call, bool clear)
779 {
780 nvlist_t *nvl;
781 int ret;
782
783 nvl = nvlist_create(0);
784 if (nvl == 0)
785 return (ENOMEM);
786
787 nvlist_add_number(nvl, "nr", nr);
788 nvlist_add_number(nvl, "ticket", ticket);
789 nvlist_add_string(nvl, "anchor", anchor);
790 nvlist_add_number(nvl, "ruleset", ruleset);
791
792 if (clear)
793 nvlist_add_bool(nvl, "clear_counter", true);
794
795 if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0)
796 goto out;
797
798 pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule);
799
800 if (anchor_call)
801 strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
802 MAXPATHLEN);
803
804 out:
805 nvlist_destroy(nvl);
806 return (ret);
807 }
808
809 int
pfctl_set_keepcounters(int dev,bool keep)810 pfctl_set_keepcounters(int dev, bool keep)
811 {
812 struct pfioc_nv nv;
813 nvlist_t *nvl;
814 int ret;
815
816 nvl = nvlist_create(0);
817
818 nvlist_add_bool(nvl, "keep_counters", keep);
819
820 nv.data = nvlist_pack(nvl, &nv.len);
821 nv.size = nv.len;
822
823 nvlist_destroy(nvl);
824
825 ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv);
826
827 free(nv.data);
828 return (ret);
829 }
830
831 static void
pfctl_nv_add_state_cmp(nvlist_t * nvl,const char * name,const struct pfctl_state_cmp * cmp)832 pfctl_nv_add_state_cmp(nvlist_t *nvl, const char *name,
833 const struct pfctl_state_cmp *cmp)
834 {
835 nvlist_t *nv;
836
837 nv = nvlist_create(0);
838
839 nvlist_add_number(nv, "id", cmp->id);
840 nvlist_add_number(nv, "creatorid", htonl(cmp->creatorid));
841 nvlist_add_number(nv, "direction", cmp->direction);
842
843 nvlist_add_nvlist(nvl, name, nv);
844 nvlist_destroy(nv);
845 }
846
847 static void
pf_state_key_export_to_state_key(struct pfctl_state_key * ps,const struct pf_state_key_export * s)848 pf_state_key_export_to_state_key(struct pfctl_state_key *ps,
849 const struct pf_state_key_export *s)
850 {
851 bcopy(s->addr, ps->addr, sizeof(ps->addr[0]) * 2);
852 ps->port[0] = s->port[0];
853 ps->port[1] = s->port[1];
854 }
855
856 static void
pf_state_peer_export_to_state_peer(struct pfctl_state_peer * ps,const struct pf_state_peer_export * s)857 pf_state_peer_export_to_state_peer(struct pfctl_state_peer *ps,
858 const struct pf_state_peer_export *s)
859 {
860 /* Ignore scrub. */
861 ps->seqlo = s->seqlo;
862 ps->seqhi = s->seqhi;
863 ps->seqdiff = s->seqdiff;
864 /* Ignore max_win & mss */
865 ps->state = s->state;
866 ps->wscale = s->wscale;
867 }
868
869 static void
pf_state_export_to_state(struct pfctl_state * ps,const struct pf_state_export * s)870 pf_state_export_to_state(struct pfctl_state *ps, const struct pf_state_export *s)
871 {
872 assert(s->version >= PF_STATE_VERSION);
873
874 ps->id = s->id;
875 strlcpy(ps->ifname, s->ifname, sizeof(ps->ifname));
876 strlcpy(ps->orig_ifname, s->orig_ifname, sizeof(ps->orig_ifname));
877 pf_state_key_export_to_state_key(&ps->key[0], &s->key[0]);
878 pf_state_key_export_to_state_key(&ps->key[1], &s->key[1]);
879 pf_state_peer_export_to_state_peer(&ps->src, &s->src);
880 pf_state_peer_export_to_state_peer(&ps->dst, &s->dst);
881 bcopy(&s->rt_addr, &ps->rt_addr, sizeof(ps->rt_addr));
882 ps->rule = ntohl(s->rule);
883 ps->anchor = ntohl(s->anchor);
884 ps->nat_rule = ntohl(s->nat_rule);
885 ps->creation = ntohl(s->creation);
886 ps->expire = ntohl(s->expire);
887 ps->packets[0] = s->packets[0];
888 ps->packets[1] = s->packets[1];
889 ps->bytes[0] = s->bytes[0];
890 ps->bytes[1] = s->bytes[1];
891 ps->creatorid = ntohl(s->creatorid);
892 ps->key[0].proto = s->proto;
893 ps->key[1].proto = s->proto;
894 ps->key[0].af = s->af;
895 ps->key[1].af = s->af;
896 ps->direction = s->direction;
897 ps->state_flags = s->state_flags;
898 ps->sync_flags = s->sync_flags;
899 }
900
901 int
pfctl_get_states(int dev,struct pfctl_states * states)902 pfctl_get_states(int dev, struct pfctl_states *states)
903 {
904 struct pfioc_states_v2 ps;
905 struct pf_state_export *p;
906 char *inbuf = NULL, *newinbuf = NULL;
907 unsigned int len = 0;
908 int i, error;
909
910 bzero(&ps, sizeof(ps));
911 ps.ps_req_version = PF_STATE_VERSION;
912
913 bzero(states, sizeof(*states));
914 TAILQ_INIT(&states->states);
915
916 for (;;) {
917 ps.ps_len = len;
918 if (len) {
919 newinbuf = realloc(inbuf, len);
920 if (newinbuf == NULL)
921 return (ENOMEM);
922 ps.ps_buf = inbuf = newinbuf;
923 }
924 if ((error = ioctl(dev, DIOCGETSTATESV2, &ps)) < 0) {
925 free(inbuf);
926 return (error);
927 }
928 if (ps.ps_len + sizeof(struct pfioc_states_v2) < len)
929 break;
930 if (len == 0 && ps.ps_len == 0)
931 goto out;
932 if (len == 0 && ps.ps_len != 0)
933 len = ps.ps_len;
934 if (ps.ps_len == 0)
935 goto out; /* no states */
936 len *= 2;
937 }
938 p = ps.ps_states;
939
940 for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) {
941 struct pfctl_state *s = malloc(sizeof(*s));
942 if (s == NULL) {
943 pfctl_free_states(states);
944 error = ENOMEM;
945 goto out;
946 }
947
948 pf_state_export_to_state(s, p);
949 TAILQ_INSERT_TAIL(&states->states, s, entry);
950 }
951
952 out:
953 free(inbuf);
954 return (error);
955 }
956
957 void
pfctl_free_states(struct pfctl_states * states)958 pfctl_free_states(struct pfctl_states *states)
959 {
960 struct pfctl_state *s, *tmp;
961
962 TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) {
963 free(s);
964 }
965
966 bzero(states, sizeof(*states));
967 }
968
969 static int
_pfctl_clear_states(int dev,const struct pfctl_kill * kill,unsigned int * killed,uint64_t ioctlval)970 _pfctl_clear_states(int dev, const struct pfctl_kill *kill,
971 unsigned int *killed, uint64_t ioctlval)
972 {
973 nvlist_t *nvl;
974 int ret;
975
976 nvl = nvlist_create(0);
977
978 pfctl_nv_add_state_cmp(nvl, "cmp", &kill->cmp);
979 nvlist_add_number(nvl, "af", kill->af);
980 nvlist_add_number(nvl, "proto", kill->proto);
981 pfctl_nv_add_rule_addr(nvl, "src", &kill->src);
982 pfctl_nv_add_rule_addr(nvl, "dst", &kill->dst);
983 pfctl_nv_add_rule_addr(nvl, "rt_addr", &kill->rt_addr);
984 nvlist_add_string(nvl, "ifname", kill->ifname);
985 nvlist_add_string(nvl, "label", kill->label);
986 nvlist_add_bool(nvl, "kill_match", kill->kill_match);
987
988 if ((ret = pfctl_do_ioctl(dev, ioctlval, 1024, &nvl)) != 0)
989 goto out;
990
991 if (killed)
992 *killed = nvlist_get_number(nvl, "killed");
993
994 out:
995 nvlist_destroy(nvl);
996 return (ret);
997 }
998
999 int
pfctl_clear_states(int dev,const struct pfctl_kill * kill,unsigned int * killed)1000 pfctl_clear_states(int dev, const struct pfctl_kill *kill,
1001 unsigned int *killed)
1002 {
1003 return (_pfctl_clear_states(dev, kill, killed, DIOCCLRSTATESNV));
1004 }
1005
1006 int
pfctl_kill_states(int dev,const struct pfctl_kill * kill,unsigned int * killed)1007 pfctl_kill_states(int dev, const struct pfctl_kill *kill, unsigned int *killed)
1008 {
1009 return (_pfctl_clear_states(dev, kill, killed, DIOCKILLSTATESNV));
1010 }
1011
1012 int
pfctl_clear_rules(int dev,const char * anchorname)1013 pfctl_clear_rules(int dev, const char *anchorname)
1014 {
1015 struct pfioc_trans trans;
1016 struct pfioc_trans_e transe[2];
1017 int ret;
1018
1019 bzero(&trans, sizeof(trans));
1020 bzero(&transe, sizeof(transe));
1021
1022 transe[0].rs_num = PF_RULESET_SCRUB;
1023 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
1024 >= sizeof(transe[0].anchor))
1025 return (E2BIG);
1026
1027 transe[1].rs_num = PF_RULESET_FILTER;
1028 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
1029 >= sizeof(transe[1].anchor))
1030 return (E2BIG);
1031
1032 trans.size = 2;
1033 trans.esize = sizeof(transe[0]);
1034 trans.array = transe;
1035
1036 ret = ioctl(dev, DIOCXBEGIN, &trans);
1037 if (ret != 0)
1038 return (errno);
1039 ret = ioctl(dev, DIOCXCOMMIT, &trans);
1040 if (ret != 0)
1041 return (errno);
1042
1043 return (0);
1044 }
1045
1046 int
pfctl_clear_nat(int dev,const char * anchorname)1047 pfctl_clear_nat(int dev, const char *anchorname)
1048 {
1049 struct pfioc_trans trans;
1050 struct pfioc_trans_e transe[3];
1051 int ret;
1052
1053 bzero(&trans, sizeof(trans));
1054 bzero(&transe, sizeof(transe));
1055
1056 transe[0].rs_num = PF_RULESET_NAT;
1057 if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
1058 >= sizeof(transe[0].anchor))
1059 return (E2BIG);
1060
1061 transe[1].rs_num = PF_RULESET_BINAT;
1062 if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
1063 >= sizeof(transe[0].anchor))
1064 return (E2BIG);
1065
1066 transe[2].rs_num = PF_RULESET_RDR;
1067 if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor))
1068 >= sizeof(transe[2].anchor))
1069 return (E2BIG);
1070
1071 trans.size = 3;
1072 trans.esize = sizeof(transe[0]);
1073 trans.array = transe;
1074
1075 ret = ioctl(dev, DIOCXBEGIN, &trans);
1076 if (ret != 0)
1077 return (errno);
1078 ret = ioctl(dev, DIOCXCOMMIT, &trans);
1079 if (ret != 0)
1080 return (errno);
1081
1082 return (0);
1083 }
1084
1085 static int
pfctl_get_limit(int dev,const int index,uint * limit)1086 pfctl_get_limit(int dev, const int index, uint *limit)
1087 {
1088 struct pfioc_limit pl;
1089
1090 bzero(&pl, sizeof(pl));
1091 pl.index = index;
1092
1093 if (ioctl(dev, DIOCGETLIMIT, &pl) == -1)
1094 return (errno);
1095
1096 *limit = pl.limit;
1097
1098 return (0);
1099 }
1100
1101 int
pfctl_set_syncookies(int dev,const struct pfctl_syncookies * s)1102 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s)
1103 {
1104 struct pfioc_nv nv;
1105 nvlist_t *nvl;
1106 int ret;
1107 uint state_limit;
1108
1109 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
1110 if (ret != 0)
1111 return (ret);
1112
1113 nvl = nvlist_create(0);
1114
1115 nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER);
1116 nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE);
1117 nvlist_add_number(nvl, "highwater", state_limit * s->highwater / 100);
1118 nvlist_add_number(nvl, "lowwater", state_limit * s->lowwater / 100);
1119
1120 nv.data = nvlist_pack(nvl, &nv.len);
1121 nv.size = nv.len;
1122 nvlist_destroy(nvl);
1123 nvl = NULL;
1124
1125 ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv);
1126
1127 free(nv.data);
1128 if (ret != 0)
1129 return (errno);
1130
1131 return (0);
1132 }
1133
1134 int
pfctl_get_syncookies(int dev,struct pfctl_syncookies * s)1135 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s)
1136 {
1137 nvlist_t *nvl;
1138 int ret;
1139 uint state_limit;
1140 bool enabled, adaptive;
1141
1142 ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
1143 if (ret != 0)
1144 return (ret);
1145
1146 bzero(s, sizeof(*s));
1147
1148 nvl = nvlist_create(0);
1149
1150 if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) {
1151 ret = errno;
1152 goto out;
1153 }
1154
1155 enabled = nvlist_get_bool(nvl, "enabled");
1156 adaptive = nvlist_get_bool(nvl, "adaptive");
1157
1158 if (enabled) {
1159 if (adaptive)
1160 s->mode = PFCTL_SYNCOOKIES_ADAPTIVE;
1161 else
1162 s->mode = PFCTL_SYNCOOKIES_ALWAYS;
1163 } else {
1164 s->mode = PFCTL_SYNCOOKIES_NEVER;
1165 }
1166
1167 s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit;
1168 s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit;
1169 s->halfopen_states = nvlist_get_number(nvl, "halfopen_states");
1170
1171 out:
1172 nvlist_destroy(nvl);
1173 return (ret);
1174 }
1175
1176 int
pfctl_table_add_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * nadd,int flags)1177 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
1178 *addr, int size, int *nadd, int flags)
1179 {
1180 struct pfioc_table io;
1181
1182 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
1183 return (EINVAL);
1184 }
1185 bzero(&io, sizeof io);
1186 io.pfrio_flags = flags;
1187 io.pfrio_table = *tbl;
1188 io.pfrio_buffer = addr;
1189 io.pfrio_esize = sizeof(*addr);
1190 io.pfrio_size = size;
1191
1192 if (ioctl(dev, DIOCRADDADDRS, &io))
1193 return (errno);
1194 if (nadd != NULL)
1195 *nadd = io.pfrio_nadd;
1196 return (0);
1197 }
1198
1199 int
pfctl_table_del_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int size,int * ndel,int flags)1200 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
1201 *addr, int size, int *ndel, int flags)
1202 {
1203 struct pfioc_table io;
1204
1205 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
1206 return (EINVAL);
1207 }
1208 bzero(&io, sizeof io);
1209 io.pfrio_flags = flags;
1210 io.pfrio_table = *tbl;
1211 io.pfrio_buffer = addr;
1212 io.pfrio_esize = sizeof(*addr);
1213 io.pfrio_size = size;
1214
1215 if (ioctl(dev, DIOCRDELADDRS, &io))
1216 return (errno);
1217 if (ndel != NULL)
1218 *ndel = io.pfrio_ndel;
1219 return (0);
1220 }
1221
1222 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)1223 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
1224 *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags)
1225 {
1226 struct pfioc_table io;
1227
1228 if (tbl == NULL || size < 0 || (size && addr == NULL)) {
1229 return (EINVAL);
1230 }
1231 bzero(&io, sizeof io);
1232 io.pfrio_flags = flags;
1233 io.pfrio_table = *tbl;
1234 io.pfrio_buffer = addr;
1235 io.pfrio_esize = sizeof(*addr);
1236 io.pfrio_size = size;
1237 io.pfrio_size2 = (size2 != NULL) ? *size2 : 0;
1238 if (ioctl(dev, DIOCRSETADDRS, &io))
1239 return (errno);
1240 if (nadd != NULL)
1241 *nadd = io.pfrio_nadd;
1242 if (ndel != NULL)
1243 *ndel = io.pfrio_ndel;
1244 if (nchange != NULL)
1245 *nchange = io.pfrio_nchange;
1246 if (size2 != NULL)
1247 *size2 = io.pfrio_size2;
1248 return (0);
1249 }
1250
pfctl_table_get_addrs(int dev,struct pfr_table * tbl,struct pfr_addr * addr,int * size,int flags)1251 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr,
1252 int *size, int flags)
1253 {
1254 struct pfioc_table io;
1255
1256 if (tbl == NULL || size == NULL || *size < 0 ||
1257 (*size && addr == NULL)) {
1258 return (EINVAL);
1259 }
1260 bzero(&io, sizeof io);
1261 io.pfrio_flags = flags;
1262 io.pfrio_table = *tbl;
1263 io.pfrio_buffer = addr;
1264 io.pfrio_esize = sizeof(*addr);
1265 io.pfrio_size = *size;
1266 if (ioctl(dev, DIOCRGETADDRS, &io))
1267 return (errno);
1268 *size = io.pfrio_size;
1269 return (0);
1270 }
1271