1 /* $OpenBSD: pfctl_parser.c,v 1.240 2008/06/10 20:55:02 mcbride Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-2-Clause
5 *
6 * Copyright (c) 2001 Daniel Hartmeier
7 * Copyright (c) 2002,2003 Henning Brauer
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 *
14 * - Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * - Redistributions in binary form must reproduce the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer in the documentation and/or other materials provided
19 * with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 *
34 */
35
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
38
39 #include <sys/types.h>
40 #include <sys/ioctl.h>
41 #include <sys/socket.h>
42 #include <sys/param.h>
43 #include <sys/proc.h>
44 #include <net/if.h>
45 #include <netinet/in.h>
46 #include <netinet/in_systm.h>
47 #include <netinet/ip.h>
48 #include <netinet/ip_icmp.h>
49 #include <netinet/icmp6.h>
50 #include <net/pfvar.h>
51 #include <arpa/inet.h>
52
53 #include <assert.h>
54 #include <search.h>
55 #include <stdio.h>
56 #include <stdlib.h>
57 #include <string.h>
58 #include <ctype.h>
59 #include <netdb.h>
60 #include <stdarg.h>
61 #include <errno.h>
62 #include <err.h>
63 #include <ifaddrs.h>
64 #include <unistd.h>
65
66 #include "pfctl_parser.h"
67 #include "pfctl.h"
68
69 void print_op (u_int8_t, const char *, const char *);
70 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int);
71 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned);
72 void print_flags (u_int8_t);
73 void print_fromto(struct pf_rule_addr *, pf_osfp_t,
74 struct pf_rule_addr *, u_int8_t, u_int8_t, int, int);
75 int ifa_skip_if(const char *filter, struct node_host *p);
76
77 struct node_host *host_if(const char *, int);
78 struct node_host *host_v4(const char *, int);
79 struct node_host *host_v6(const char *, int);
80 struct node_host *host_dns(const char *, int, int);
81
82 const char * const tcpflags = "FSRPAUEW";
83
84 static const struct icmptypeent icmp_type[] = {
85 { "echoreq", ICMP_ECHO },
86 { "echorep", ICMP_ECHOREPLY },
87 { "unreach", ICMP_UNREACH },
88 { "squench", ICMP_SOURCEQUENCH },
89 { "redir", ICMP_REDIRECT },
90 { "althost", ICMP_ALTHOSTADDR },
91 { "routeradv", ICMP_ROUTERADVERT },
92 { "routersol", ICMP_ROUTERSOLICIT },
93 { "timex", ICMP_TIMXCEED },
94 { "paramprob", ICMP_PARAMPROB },
95 { "timereq", ICMP_TSTAMP },
96 { "timerep", ICMP_TSTAMPREPLY },
97 { "inforeq", ICMP_IREQ },
98 { "inforep", ICMP_IREQREPLY },
99 { "maskreq", ICMP_MASKREQ },
100 { "maskrep", ICMP_MASKREPLY },
101 { "trace", ICMP_TRACEROUTE },
102 { "dataconv", ICMP_DATACONVERR },
103 { "mobredir", ICMP_MOBILE_REDIRECT },
104 { "ipv6-where", ICMP_IPV6_WHEREAREYOU },
105 { "ipv6-here", ICMP_IPV6_IAMHERE },
106 { "mobregreq", ICMP_MOBILE_REGREQUEST },
107 { "mobregrep", ICMP_MOBILE_REGREPLY },
108 { "skip", ICMP_SKIP },
109 { "photuris", ICMP_PHOTURIS }
110 };
111
112 static const struct icmptypeent icmp6_type[] = {
113 { "unreach", ICMP6_DST_UNREACH },
114 { "toobig", ICMP6_PACKET_TOO_BIG },
115 { "timex", ICMP6_TIME_EXCEEDED },
116 { "paramprob", ICMP6_PARAM_PROB },
117 { "echoreq", ICMP6_ECHO_REQUEST },
118 { "echorep", ICMP6_ECHO_REPLY },
119 { "groupqry", ICMP6_MEMBERSHIP_QUERY },
120 { "listqry", MLD_LISTENER_QUERY },
121 { "grouprep", ICMP6_MEMBERSHIP_REPORT },
122 { "listenrep", MLD_LISTENER_REPORT },
123 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION },
124 { "listendone", MLD_LISTENER_DONE },
125 { "routersol", ND_ROUTER_SOLICIT },
126 { "routeradv", ND_ROUTER_ADVERT },
127 { "neighbrsol", ND_NEIGHBOR_SOLICIT },
128 { "neighbradv", ND_NEIGHBOR_ADVERT },
129 { "redir", ND_REDIRECT },
130 { "routrrenum", ICMP6_ROUTER_RENUMBERING },
131 { "wrureq", ICMP6_WRUREQUEST },
132 { "wrurep", ICMP6_WRUREPLY },
133 { "fqdnreq", ICMP6_FQDN_QUERY },
134 { "fqdnrep", ICMP6_FQDN_REPLY },
135 { "niqry", ICMP6_NI_QUERY },
136 { "nirep", ICMP6_NI_REPLY },
137 { "mtraceresp", MLD_MTRACE_RESP },
138 { "mtrace", MLD_MTRACE }
139 };
140
141 static const struct icmpcodeent icmp_code[] = {
142 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET },
143 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST },
144 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL },
145 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT },
146 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG },
147 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL },
148 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN },
149 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN },
150 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED },
151 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB },
152 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB },
153 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET },
154 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST },
155 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB },
156 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE },
157 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF },
158 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET },
159 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST },
160 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET },
161 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST },
162 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL },
163 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON },
164 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS },
165 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS },
166 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR },
167 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT },
168 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH },
169 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX },
170 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED },
171 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED }
172 };
173
174 static const struct icmpcodeent icmp6_code[] = {
175 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN },
176 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE },
177 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR },
178 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE },
179 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR },
180 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT },
181 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT },
182 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY },
183 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER },
184 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER },
185 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK },
186 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER }
187 };
188
189 const struct pf_timeout pf_timeouts[] = {
190 { "tcp.first", PFTM_TCP_FIRST_PACKET },
191 { "tcp.opening", PFTM_TCP_OPENING },
192 { "tcp.established", PFTM_TCP_ESTABLISHED },
193 { "tcp.closing", PFTM_TCP_CLOSING },
194 { "tcp.finwait", PFTM_TCP_FIN_WAIT },
195 { "tcp.closed", PFTM_TCP_CLOSED },
196 { "tcp.tsdiff", PFTM_TS_DIFF },
197 { "udp.first", PFTM_UDP_FIRST_PACKET },
198 { "udp.single", PFTM_UDP_SINGLE },
199 { "udp.multiple", PFTM_UDP_MULTIPLE },
200 { "icmp.first", PFTM_ICMP_FIRST_PACKET },
201 { "icmp.error", PFTM_ICMP_ERROR_REPLY },
202 { "other.first", PFTM_OTHER_FIRST_PACKET },
203 { "other.single", PFTM_OTHER_SINGLE },
204 { "other.multiple", PFTM_OTHER_MULTIPLE },
205 { "frag", PFTM_FRAG },
206 { "interval", PFTM_INTERVAL },
207 { "adaptive.start", PFTM_ADAPTIVE_START },
208 { "adaptive.end", PFTM_ADAPTIVE_END },
209 { "src.track", PFTM_SRC_NODE },
210 { NULL, 0 }
211 };
212
213 static struct hsearch_data isgroup_map;
214
215 static __attribute__((constructor)) void
pfctl_parser_init(void)216 pfctl_parser_init(void)
217 {
218 /*
219 * As hdestroy() will never be called on these tables, it will be
220 * safe to use references into the stored data as keys.
221 */
222 if (hcreate_r(0, &isgroup_map) == 0)
223 err(1, "Failed to create interface group query response map");
224 }
225
226 const struct icmptypeent *
geticmptypebynumber(u_int8_t type,sa_family_t af)227 geticmptypebynumber(u_int8_t type, sa_family_t af)
228 {
229 unsigned int i;
230
231 if (af != AF_INET6) {
232 for (i=0; i < nitems(icmp_type); i++) {
233 if (type == icmp_type[i].type)
234 return (&icmp_type[i]);
235 }
236 } else {
237 for (i=0; i < nitems(icmp6_type); i++) {
238 if (type == icmp6_type[i].type)
239 return (&icmp6_type[i]);
240 }
241 }
242 return (NULL);
243 }
244
245 const struct icmptypeent *
geticmptypebyname(char * w,sa_family_t af)246 geticmptypebyname(char *w, sa_family_t af)
247 {
248 unsigned int i;
249
250 if (af != AF_INET6) {
251 for (i=0; i < nitems(icmp_type); i++) {
252 if (!strcmp(w, icmp_type[i].name))
253 return (&icmp_type[i]);
254 }
255 } else {
256 for (i=0; i < nitems(icmp6_type); i++) {
257 if (!strcmp(w, icmp6_type[i].name))
258 return (&icmp6_type[i]);
259 }
260 }
261 return (NULL);
262 }
263
264 const struct icmpcodeent *
geticmpcodebynumber(u_int8_t type,u_int8_t code,sa_family_t af)265 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af)
266 {
267 unsigned int i;
268
269 if (af != AF_INET6) {
270 for (i=0; i < nitems(icmp_code); i++) {
271 if (type == icmp_code[i].type &&
272 code == icmp_code[i].code)
273 return (&icmp_code[i]);
274 }
275 } else {
276 for (i=0; i < nitems(icmp6_code); i++) {
277 if (type == icmp6_code[i].type &&
278 code == icmp6_code[i].code)
279 return (&icmp6_code[i]);
280 }
281 }
282 return (NULL);
283 }
284
285 const struct icmpcodeent *
geticmpcodebyname(u_long type,char * w,sa_family_t af)286 geticmpcodebyname(u_long type, char *w, sa_family_t af)
287 {
288 unsigned int i;
289
290 if (af != AF_INET6) {
291 for (i=0; i < nitems(icmp_code); i++) {
292 if (type == icmp_code[i].type &&
293 !strcmp(w, icmp_code[i].name))
294 return (&icmp_code[i]);
295 }
296 } else {
297 for (i=0; i < nitems(icmp6_code); i++) {
298 if (type == icmp6_code[i].type &&
299 !strcmp(w, icmp6_code[i].name))
300 return (&icmp6_code[i]);
301 }
302 }
303 return (NULL);
304 }
305
306 void
print_op(u_int8_t op,const char * a1,const char * a2)307 print_op(u_int8_t op, const char *a1, const char *a2)
308 {
309 if (op == PF_OP_IRG)
310 printf(" %s >< %s", a1, a2);
311 else if (op == PF_OP_XRG)
312 printf(" %s <> %s", a1, a2);
313 else if (op == PF_OP_EQ)
314 printf(" = %s", a1);
315 else if (op == PF_OP_NE)
316 printf(" != %s", a1);
317 else if (op == PF_OP_LT)
318 printf(" < %s", a1);
319 else if (op == PF_OP_LE)
320 printf(" <= %s", a1);
321 else if (op == PF_OP_GT)
322 printf(" > %s", a1);
323 else if (op == PF_OP_GE)
324 printf(" >= %s", a1);
325 else if (op == PF_OP_RRG)
326 printf(" %s:%s", a1, a2);
327 }
328
329 void
print_port(u_int8_t op,u_int16_t p1,u_int16_t p2,const char * proto,int numeric)330 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric)
331 {
332 char a1[6], a2[6];
333 struct servent *s;
334
335 if (!numeric)
336 s = getservbyport(p1, proto);
337 else
338 s = NULL;
339 p1 = ntohs(p1);
340 p2 = ntohs(p2);
341 snprintf(a1, sizeof(a1), "%u", p1);
342 snprintf(a2, sizeof(a2), "%u", p2);
343 printf(" port");
344 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE))
345 print_op(op, s->s_name, a2);
346 else
347 print_op(op, a1, a2);
348 }
349
350 void
print_ugid(u_int8_t op,unsigned u1,unsigned u2,const char * t,unsigned umax)351 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax)
352 {
353 char a1[11], a2[11];
354
355 snprintf(a1, sizeof(a1), "%u", u1);
356 snprintf(a2, sizeof(a2), "%u", u2);
357 printf(" %s", t);
358 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE))
359 print_op(op, "unknown", a2);
360 else
361 print_op(op, a1, a2);
362 }
363
364 void
print_flags(u_int8_t f)365 print_flags(u_int8_t f)
366 {
367 int i;
368
369 for (i = 0; tcpflags[i]; ++i)
370 if (f & (1 << i))
371 printf("%c", tcpflags[i]);
372 }
373
374 void
print_fromto(struct pf_rule_addr * src,pf_osfp_t osfp,struct pf_rule_addr * dst,sa_family_t af,u_int8_t proto,int verbose,int numeric)375 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst,
376 sa_family_t af, u_int8_t proto, int verbose, int numeric)
377 {
378 char buf[PF_OSFP_LEN*3];
379 if (src->addr.type == PF_ADDR_ADDRMASK &&
380 dst->addr.type == PF_ADDR_ADDRMASK &&
381 PF_AZERO(&src->addr.v.a.addr, AF_INET6) &&
382 PF_AZERO(&src->addr.v.a.mask, AF_INET6) &&
383 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) &&
384 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) &&
385 !src->neg && !dst->neg &&
386 !src->port_op && !dst->port_op &&
387 osfp == PF_OSFP_ANY)
388 printf(" all");
389 else {
390 printf(" from ");
391 if (src->neg)
392 printf("! ");
393 print_addr(&src->addr, af, verbose);
394 if (src->port_op)
395 print_port(src->port_op, src->port[0],
396 src->port[1],
397 proto == IPPROTO_TCP ? "tcp" : "udp",
398 numeric);
399 if (osfp != PF_OSFP_ANY)
400 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf,
401 sizeof(buf)));
402
403 printf(" to ");
404 if (dst->neg)
405 printf("! ");
406 print_addr(&dst->addr, af, verbose);
407 if (dst->port_op)
408 print_port(dst->port_op, dst->port[0],
409 dst->port[1],
410 proto == IPPROTO_TCP ? "tcp" : "udp",
411 numeric);
412 }
413 }
414
415 void
print_pool(struct pfctl_pool * pool,u_int16_t p1,u_int16_t p2,sa_family_t af,int id)416 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2,
417 sa_family_t af, int id)
418 {
419 struct pf_pooladdr *pooladdr;
420
421 if ((TAILQ_FIRST(&pool->list) != NULL) &&
422 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
423 printf("{ ");
424 TAILQ_FOREACH(pooladdr, &pool->list, entries){
425 switch (id) {
426 case PF_NAT:
427 case PF_RDR:
428 case PF_BINAT:
429 print_addr(&pooladdr->addr, af, 0);
430 break;
431 case PF_PASS:
432 if (PF_AZERO(&pooladdr->addr.v.a.addr, af))
433 printf("%s", pooladdr->ifname);
434 else {
435 printf("(%s ", pooladdr->ifname);
436 print_addr(&pooladdr->addr, af, 0);
437 printf(")");
438 }
439 break;
440 default:
441 break;
442 }
443 if (TAILQ_NEXT(pooladdr, entries) != NULL)
444 printf(", ");
445 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
446 printf(" }");
447 }
448 switch (id) {
449 case PF_NAT:
450 if ((p1 != PF_NAT_PROXY_PORT_LOW ||
451 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) {
452 if (p1 == p2)
453 printf(" port %u", p1);
454 else
455 printf(" port %u:%u", p1, p2);
456 }
457 break;
458 case PF_RDR:
459 if (p1) {
460 printf(" port %u", p1);
461 if (p2 && (p2 != p1))
462 printf(":%u", p2);
463 }
464 break;
465 default:
466 break;
467 }
468 switch (pool->opts & PF_POOL_TYPEMASK) {
469 case PF_POOL_NONE:
470 break;
471 case PF_POOL_BITMASK:
472 printf(" bitmask");
473 break;
474 case PF_POOL_RANDOM:
475 printf(" random");
476 break;
477 case PF_POOL_SRCHASH:
478 printf(" source-hash 0x%08x%08x%08x%08x",
479 pool->key.key32[0], pool->key.key32[1],
480 pool->key.key32[2], pool->key.key32[3]);
481 break;
482 case PF_POOL_ROUNDROBIN:
483 printf(" round-robin");
484 break;
485 }
486 if (pool->opts & PF_POOL_STICKYADDR)
487 printf(" sticky-address");
488 if (id == PF_NAT && p1 == 0 && p2 == 0)
489 printf(" static-port");
490 if (pool->mape.offset > 0)
491 printf(" map-e-portset %u/%u/%u",
492 pool->mape.offset, pool->mape.psidlen, pool->mape.psid);
493 }
494
495 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES;
496 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES;
497 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES;
498 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES;
499
500 void
print_status(struct pfctl_status * s,struct pfctl_syncookies * cookies,int opts)501 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts)
502 {
503 struct pfctl_status_counter *c;
504 char statline[80], *running;
505 time_t runtime;
506 int i;
507 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1];
508 static const char hex[] = "0123456789abcdef";
509
510 runtime = time(NULL) - s->since;
511 running = s->running ? "Enabled" : "Disabled";
512
513 if (s->since) {
514 unsigned int sec, min, hrs, day = runtime;
515
516 sec = day % 60;
517 day /= 60;
518 min = day % 60;
519 day /= 60;
520 hrs = day % 24;
521 day /= 24;
522 snprintf(statline, sizeof(statline),
523 "Status: %s for %u days %.2u:%.2u:%.2u",
524 running, day, hrs, min, sec);
525 } else
526 snprintf(statline, sizeof(statline), "Status: %s", running);
527 printf("%-44s", statline);
528 switch (s->debug) {
529 case PF_DEBUG_NONE:
530 printf("%15s\n\n", "Debug: None");
531 break;
532 case PF_DEBUG_URGENT:
533 printf("%15s\n\n", "Debug: Urgent");
534 break;
535 case PF_DEBUG_MISC:
536 printf("%15s\n\n", "Debug: Misc");
537 break;
538 case PF_DEBUG_NOISY:
539 printf("%15s\n\n", "Debug: Loud");
540 break;
541 }
542
543 if (opts & PF_OPT_VERBOSE) {
544 printf("Hostid: 0x%08x\n", s->hostid);
545
546 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) {
547 buf[i + i] = hex[s->pf_chksum[i] >> 4];
548 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f];
549 }
550 buf[i + i] = '\0';
551 printf("Checksum: 0x%s\n\n", buf);
552 }
553
554 if (s->ifname[0] != 0) {
555 printf("Interface Stats for %-16s %5s %16s\n",
556 s->ifname, "IPv4", "IPv6");
557 printf(" %-25s %14llu %16llu\n", "Bytes In",
558 (unsigned long long)s->bcounters[0][0],
559 (unsigned long long)s->bcounters[1][0]);
560 printf(" %-25s %14llu %16llu\n", "Bytes Out",
561 (unsigned long long)s->bcounters[0][1],
562 (unsigned long long)s->bcounters[1][1]);
563 printf(" Packets In\n");
564 printf(" %-23s %14llu %16llu\n", "Passed",
565 (unsigned long long)s->pcounters[0][0][PF_PASS],
566 (unsigned long long)s->pcounters[1][0][PF_PASS]);
567 printf(" %-23s %14llu %16llu\n", "Blocked",
568 (unsigned long long)s->pcounters[0][0][PF_DROP],
569 (unsigned long long)s->pcounters[1][0][PF_DROP]);
570 printf(" Packets Out\n");
571 printf(" %-23s %14llu %16llu\n", "Passed",
572 (unsigned long long)s->pcounters[0][1][PF_PASS],
573 (unsigned long long)s->pcounters[1][1][PF_PASS]);
574 printf(" %-23s %14llu %16llu\n\n", "Blocked",
575 (unsigned long long)s->pcounters[0][1][PF_DROP],
576 (unsigned long long)s->pcounters[1][1][PF_DROP]);
577 }
578 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
579 printf(" %-25s %14ju %14s\n", "current entries", s->states, "");
580 TAILQ_FOREACH(c, &s->fcounters, entry) {
581 printf(" %-25s %14ju ", c->name, c->counter);
582 if (runtime > 0)
583 printf("%14.1f/s\n",
584 (double)c->counter / (double)runtime);
585 else
586 printf("%14s\n", "");
587 }
588 if (opts & PF_OPT_VERBOSE) {
589 printf("Source Tracking Table\n");
590 printf(" %-25s %14ju %14s\n", "current entries",
591 s->src_nodes, "");
592 TAILQ_FOREACH(c, &s->scounters, entry) {
593 printf(" %-25s %14ju ", c->name, c->counter);
594 if (runtime > 0)
595 printf("%14.1f/s\n",
596 (double)c->counter / (double)runtime);
597 else
598 printf("%14s\n", "");
599 }
600 }
601 printf("Counters\n");
602 TAILQ_FOREACH(c, &s->counters, entry) {
603 printf(" %-25s %14ju ", c->name, c->counter);
604 if (runtime > 0)
605 printf("%14.1f/s\n",
606 (double)c->counter / (double)runtime);
607 else
608 printf("%14s\n", "");
609 }
610 if (opts & PF_OPT_VERBOSE) {
611 printf("Limit Counters\n");
612 TAILQ_FOREACH(c, &s->lcounters, entry) {
613 printf(" %-25s %14ju ", c->name, c->counter);
614 if (runtime > 0)
615 printf("%14.1f/s\n",
616 (double)c->counter / (double)runtime);
617 else
618 printf("%14s\n", "");
619 }
620
621 printf("Syncookies\n");
622 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE);
623 printf(" %-25s %s\n", "mode",
624 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]);
625 }
626 }
627
628 void
print_running(struct pfctl_status * status)629 print_running(struct pfctl_status *status)
630 {
631 printf("%s\n", status->running ? "Enabled" : "Disabled");
632 }
633
634 void
print_src_node(struct pf_src_node * sn,int opts)635 print_src_node(struct pf_src_node *sn, int opts)
636 {
637 struct pf_addr_wrap aw;
638 int min, sec;
639
640 memset(&aw, 0, sizeof(aw));
641 if (sn->af == AF_INET)
642 aw.v.a.mask.addr32[0] = 0xffffffff;
643 else
644 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
645
646 aw.v.a.addr = sn->addr;
647 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
648 printf(" -> ");
649 aw.v.a.addr = sn->raddr;
650 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
651 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states,
652 sn->conn, sn->conn_rate.count / 1000,
653 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds);
654 if (opts & PF_OPT_VERBOSE) {
655 sec = sn->creation % 60;
656 sn->creation /= 60;
657 min = sn->creation % 60;
658 sn->creation /= 60;
659 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec);
660 if (sn->states == 0) {
661 sec = sn->expire % 60;
662 sn->expire /= 60;
663 min = sn->expire % 60;
664 sn->expire /= 60;
665 printf(", expires in %.2u:%.2u:%.2u",
666 sn->expire, min, sec);
667 }
668 printf(", %llu pkts, %llu bytes",
669 #ifdef __FreeBSD__
670 (unsigned long long)(sn->packets[0] + sn->packets[1]),
671 (unsigned long long)(sn->bytes[0] + sn->bytes[1]));
672 #else
673 sn->packets[0] + sn->packets[1],
674 sn->bytes[0] + sn->bytes[1]);
675 #endif
676 switch (sn->ruletype) {
677 case PF_NAT:
678 if (sn->rule.nr != -1)
679 printf(", nat rule %u", sn->rule.nr);
680 break;
681 case PF_RDR:
682 if (sn->rule.nr != -1)
683 printf(", rdr rule %u", sn->rule.nr);
684 break;
685 case PF_PASS:
686 if (sn->rule.nr != -1)
687 printf(", filter rule %u", sn->rule.nr);
688 break;
689 }
690 printf("\n");
691 }
692 }
693
694 void
print_rule(struct pfctl_rule * r,const char * anchor_call,int verbose,int numeric)695 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric)
696 {
697 static const char *actiontypes[] = { "pass", "block", "scrub",
698 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" };
699 static const char *anchortypes[] = { "anchor", "anchor", "anchor",
700 "anchor", "nat-anchor", "nat-anchor", "binat-anchor",
701 "binat-anchor", "rdr-anchor", "rdr-anchor" };
702 int i, opts;
703
704 if (verbose)
705 printf("@%d ", r->nr);
706 if (r->action == PF_MATCH)
707 printf("match");
708 else if (r->action > PF_NORDR)
709 printf("action(%d)", r->action);
710 else if (anchor_call[0]) {
711 if (anchor_call[0] == '_') {
712 printf("%s", anchortypes[r->action]);
713 } else
714 printf("%s \"%s\"", anchortypes[r->action],
715 anchor_call);
716 } else {
717 printf("%s", actiontypes[r->action]);
718 if (r->natpass)
719 printf(" pass");
720 }
721 if (r->action == PF_DROP) {
722 if (r->rule_flag & PFRULE_RETURN)
723 printf(" return");
724 else if (r->rule_flag & PFRULE_RETURNRST) {
725 if (!r->return_ttl)
726 printf(" return-rst");
727 else
728 printf(" return-rst(ttl %d)", r->return_ttl);
729 } else if (r->rule_flag & PFRULE_RETURNICMP) {
730 const struct icmpcodeent *ic, *ic6;
731
732 ic = geticmpcodebynumber(r->return_icmp >> 8,
733 r->return_icmp & 255, AF_INET);
734 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
735 r->return_icmp6 & 255, AF_INET6);
736
737 switch (r->af) {
738 case AF_INET:
739 printf(" return-icmp");
740 if (ic == NULL)
741 printf("(%u)", r->return_icmp & 255);
742 else
743 printf("(%s)", ic->name);
744 break;
745 case AF_INET6:
746 printf(" return-icmp6");
747 if (ic6 == NULL)
748 printf("(%u)", r->return_icmp6 & 255);
749 else
750 printf("(%s)", ic6->name);
751 break;
752 default:
753 printf(" return-icmp");
754 if (ic == NULL)
755 printf("(%u, ", r->return_icmp & 255);
756 else
757 printf("(%s, ", ic->name);
758 if (ic6 == NULL)
759 printf("%u)", r->return_icmp6 & 255);
760 else
761 printf("%s)", ic6->name);
762 break;
763 }
764 } else
765 printf(" drop");
766 }
767 if (r->direction == PF_IN)
768 printf(" in");
769 else if (r->direction == PF_OUT)
770 printf(" out");
771 if (r->log) {
772 printf(" log");
773 if (r->log & ~PF_LOG || r->logif) {
774 int count = 0;
775
776 printf(" (");
777 if (r->log & PF_LOG_ALL)
778 printf("%sall", count++ ? ", " : "");
779 if (r->log & PF_LOG_SOCKET_LOOKUP)
780 printf("%suser", count++ ? ", " : "");
781 if (r->logif)
782 printf("%sto pflog%u", count++ ? ", " : "",
783 r->logif);
784 printf(")");
785 }
786 }
787 if (r->quick)
788 printf(" quick");
789 if (r->ifname[0]) {
790 if (r->ifnot)
791 printf(" on ! %s", r->ifname);
792 else
793 printf(" on %s", r->ifname);
794 }
795 if (r->rt) {
796 if (r->rt == PF_ROUTETO)
797 printf(" route-to");
798 else if (r->rt == PF_REPLYTO)
799 printf(" reply-to");
800 else if (r->rt == PF_DUPTO)
801 printf(" dup-to");
802 printf(" ");
803 print_pool(&r->rpool, 0, 0, r->af, PF_PASS);
804 }
805 if (r->af) {
806 if (r->af == AF_INET)
807 printf(" inet");
808 else
809 printf(" inet6");
810 }
811 if (r->proto) {
812 const char *protoname;
813
814 if ((protoname = pfctl_proto2name(r->proto)) != NULL)
815 printf(" proto %s", protoname);
816 else
817 printf(" proto %u", r->proto);
818 }
819 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto,
820 verbose, numeric);
821 if (r->uid.op)
822 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user",
823 UID_MAX);
824 if (r->gid.op)
825 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group",
826 GID_MAX);
827 if (r->flags || r->flagset) {
828 printf(" flags ");
829 print_flags(r->flags);
830 printf("/");
831 print_flags(r->flagset);
832 } else if (r->action == PF_PASS &&
833 (!r->proto || r->proto == IPPROTO_TCP) &&
834 !(r->rule_flag & PFRULE_FRAGMENT) &&
835 !anchor_call[0] && r->keep_state)
836 printf(" flags any");
837 if (r->type) {
838 const struct icmptypeent *it;
839
840 it = geticmptypebynumber(r->type-1, r->af);
841 if (r->af != AF_INET6)
842 printf(" icmp-type");
843 else
844 printf(" icmp6-type");
845 if (it != NULL)
846 printf(" %s", it->name);
847 else
848 printf(" %u", r->type-1);
849 if (r->code) {
850 const struct icmpcodeent *ic;
851
852 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
853 if (ic != NULL)
854 printf(" code %s", ic->name);
855 else
856 printf(" code %u", r->code-1);
857 }
858 }
859 if (r->tos)
860 printf(" tos 0x%2.2x", r->tos);
861 if (r->prio)
862 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio);
863 if (r->scrub_flags & PFSTATE_SETMASK) {
864 char *comma = "";
865 printf(" set (");
866 if (r->scrub_flags & PFSTATE_SETPRIO) {
867 if (r->set_prio[0] == r->set_prio[1])
868 printf("%s prio %u", comma, r->set_prio[0]);
869 else
870 printf("%s prio(%u, %u)", comma, r->set_prio[0],
871 r->set_prio[1]);
872 comma = ",";
873 }
874 printf(" )");
875 }
876 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0])
877 printf(" no state");
878 else if (r->keep_state == PF_STATE_NORMAL)
879 printf(" keep state");
880 else if (r->keep_state == PF_STATE_MODULATE)
881 printf(" modulate state");
882 else if (r->keep_state == PF_STATE_SYNPROXY)
883 printf(" synproxy state");
884 if (r->prob) {
885 char buf[20];
886
887 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
888 for (i = strlen(buf)-1; i > 0; i--) {
889 if (buf[i] == '0')
890 buf[i] = '\0';
891 else {
892 if (buf[i] == '.')
893 buf[i] = '\0';
894 break;
895 }
896 }
897 printf(" probability %s%%", buf);
898 }
899 opts = 0;
900 if (r->max_states || r->max_src_nodes || r->max_src_states)
901 opts = 1;
902 if (r->rule_flag & PFRULE_NOSYNC)
903 opts = 1;
904 if (r->rule_flag & PFRULE_SRCTRACK)
905 opts = 1;
906 if (r->rule_flag & PFRULE_IFBOUND)
907 opts = 1;
908 if (r->rule_flag & PFRULE_STATESLOPPY)
909 opts = 1;
910 for (i = 0; !opts && i < PFTM_MAX; ++i)
911 if (r->timeout[i])
912 opts = 1;
913 if (opts) {
914 printf(" (");
915 if (r->max_states) {
916 printf("max %u", r->max_states);
917 opts = 0;
918 }
919 if (r->rule_flag & PFRULE_NOSYNC) {
920 if (!opts)
921 printf(", ");
922 printf("no-sync");
923 opts = 0;
924 }
925 if (r->rule_flag & PFRULE_SRCTRACK) {
926 if (!opts)
927 printf(", ");
928 printf("source-track");
929 if (r->rule_flag & PFRULE_RULESRCTRACK)
930 printf(" rule");
931 else
932 printf(" global");
933 opts = 0;
934 }
935 if (r->max_src_states) {
936 if (!opts)
937 printf(", ");
938 printf("max-src-states %u", r->max_src_states);
939 opts = 0;
940 }
941 if (r->max_src_conn) {
942 if (!opts)
943 printf(", ");
944 printf("max-src-conn %u", r->max_src_conn);
945 opts = 0;
946 }
947 if (r->max_src_conn_rate.limit) {
948 if (!opts)
949 printf(", ");
950 printf("max-src-conn-rate %u/%u",
951 r->max_src_conn_rate.limit,
952 r->max_src_conn_rate.seconds);
953 opts = 0;
954 }
955 if (r->max_src_nodes) {
956 if (!opts)
957 printf(", ");
958 printf("max-src-nodes %u", r->max_src_nodes);
959 opts = 0;
960 }
961 if (r->overload_tblname[0]) {
962 if (!opts)
963 printf(", ");
964 printf("overload <%s>", r->overload_tblname);
965 if (r->flush)
966 printf(" flush");
967 if (r->flush & PF_FLUSH_GLOBAL)
968 printf(" global");
969 }
970 if (r->rule_flag & PFRULE_IFBOUND) {
971 if (!opts)
972 printf(", ");
973 printf("if-bound");
974 opts = 0;
975 }
976 if (r->rule_flag & PFRULE_STATESLOPPY) {
977 if (!opts)
978 printf(", ");
979 printf("sloppy");
980 opts = 0;
981 }
982 for (i = 0; i < PFTM_MAX; ++i)
983 if (r->timeout[i]) {
984 int j;
985
986 if (!opts)
987 printf(", ");
988 opts = 0;
989 for (j = 0; pf_timeouts[j].name != NULL;
990 ++j)
991 if (pf_timeouts[j].timeout == i)
992 break;
993 printf("%s %u", pf_timeouts[j].name == NULL ?
994 "inv.timeout" : pf_timeouts[j].name,
995 r->timeout[i]);
996 }
997 printf(")");
998 }
999 if (r->rule_flag & PFRULE_FRAGMENT)
1000 printf(" fragment");
1001 if (r->rule_flag & PFRULE_NODF)
1002 printf(" no-df");
1003 if (r->rule_flag & PFRULE_RANDOMID)
1004 printf(" random-id");
1005 if (r->min_ttl)
1006 printf(" min-ttl %d", r->min_ttl);
1007 if (r->max_mss)
1008 printf(" max-mss %d", r->max_mss);
1009 if (r->rule_flag & PFRULE_SET_TOS)
1010 printf(" set-tos 0x%2.2x", r->set_tos);
1011 if (r->allow_opts)
1012 printf(" allow-opts");
1013 if (r->action == PF_SCRUB) {
1014 if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
1015 printf(" reassemble tcp");
1016
1017 printf(" fragment reassemble");
1018 }
1019 i = 0;
1020 while (r->label[i][0])
1021 printf(" label \"%s\"", r->label[i++]);
1022 if (r->ridentifier)
1023 printf(" ridentifier %u", r->ridentifier);
1024 if (r->qname[0] && r->pqname[0])
1025 printf(" queue(%s, %s)", r->qname, r->pqname);
1026 else if (r->qname[0])
1027 printf(" queue %s", r->qname);
1028 if (r->tagname[0])
1029 printf(" tag %s", r->tagname);
1030 if (r->match_tagname[0]) {
1031 if (r->match_tag_not)
1032 printf(" !");
1033 printf(" tagged %s", r->match_tagname);
1034 }
1035 if (r->rtableid != -1)
1036 printf(" rtable %u", r->rtableid);
1037 if (r->divert.port) {
1038 #ifdef __FreeBSD__
1039 printf(" divert-to %u", ntohs(r->divert.port));
1040 #else
1041 if (PF_AZERO(&r->divert.addr, r->af)) {
1042 printf(" divert-reply");
1043 } else {
1044 /* XXX cut&paste from print_addr */
1045 char buf[48];
1046
1047 printf(" divert-to ");
1048 if (inet_ntop(r->af, &r->divert.addr, buf,
1049 sizeof(buf)) == NULL)
1050 printf("?");
1051 else
1052 printf("%s", buf);
1053 printf(" port %u", ntohs(r->divert.port));
1054 }
1055 #endif
1056 }
1057 if (!anchor_call[0] && (r->action == PF_NAT ||
1058 r->action == PF_BINAT || r->action == PF_RDR)) {
1059 printf(" -> ");
1060 print_pool(&r->rpool, r->rpool.proxy_port[0],
1061 r->rpool.proxy_port[1], r->af, r->action);
1062 }
1063 }
1064
1065 void
print_tabledef(const char * name,int flags,int addrs,struct node_tinithead * nodes)1066 print_tabledef(const char *name, int flags, int addrs,
1067 struct node_tinithead *nodes)
1068 {
1069 struct node_tinit *ti, *nti;
1070 struct node_host *h;
1071
1072 printf("table <%s>", name);
1073 if (flags & PFR_TFLAG_CONST)
1074 printf(" const");
1075 if (flags & PFR_TFLAG_PERSIST)
1076 printf(" persist");
1077 if (flags & PFR_TFLAG_COUNTERS)
1078 printf(" counters");
1079 SIMPLEQ_FOREACH(ti, nodes, entries) {
1080 if (ti->file) {
1081 printf(" file \"%s\"", ti->file);
1082 continue;
1083 }
1084 printf(" {");
1085 for (;;) {
1086 for (h = ti->host; h != NULL; h = h->next) {
1087 printf(h->not ? " !" : " ");
1088 print_addr(&h->addr, h->af, 0);
1089 }
1090 nti = SIMPLEQ_NEXT(ti, entries);
1091 if (nti != NULL && nti->file == NULL)
1092 ti = nti; /* merge lists */
1093 else
1094 break;
1095 }
1096 printf(" }");
1097 }
1098 if (addrs && SIMPLEQ_EMPTY(nodes))
1099 printf(" { }");
1100 printf("\n");
1101 }
1102
1103 int
parse_flags(char * s)1104 parse_flags(char *s)
1105 {
1106 char *p, *q;
1107 u_int8_t f = 0;
1108
1109 for (p = s; *p; p++) {
1110 if ((q = strchr(tcpflags, *p)) == NULL)
1111 return -1;
1112 else
1113 f |= 1 << (q - tcpflags);
1114 }
1115 return (f ? f : PF_TH_ALL);
1116 }
1117
1118 void
set_ipmask(struct node_host * h,u_int8_t b)1119 set_ipmask(struct node_host *h, u_int8_t b)
1120 {
1121 struct pf_addr *m, *n;
1122 int i, j = 0;
1123
1124 m = &h->addr.v.a.mask;
1125 memset(m, 0, sizeof(*m));
1126
1127 while (b >= 32) {
1128 m->addr32[j++] = 0xffffffff;
1129 b -= 32;
1130 }
1131 for (i = 31; i > 31-b; --i)
1132 m->addr32[j] |= (1 << i);
1133 if (b)
1134 m->addr32[j] = htonl(m->addr32[j]);
1135
1136 /* Mask off bits of the address that will never be used. */
1137 n = &h->addr.v.a.addr;
1138 if (h->addr.type == PF_ADDR_ADDRMASK)
1139 for (i = 0; i < 4; i++)
1140 n->addr32[i] = n->addr32[i] & m->addr32[i];
1141 }
1142
1143 int
check_netmask(struct node_host * h,sa_family_t af)1144 check_netmask(struct node_host *h, sa_family_t af)
1145 {
1146 struct node_host *n = NULL;
1147 struct pf_addr *m;
1148
1149 for (n = h; n != NULL; n = n->next) {
1150 if (h->addr.type == PF_ADDR_TABLE)
1151 continue;
1152 m = &h->addr.v.a.mask;
1153 /* fix up netmask for dynaddr */
1154 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL &&
1155 unmask(m, AF_INET6) > 32)
1156 set_ipmask(n, 32);
1157 /* netmasks > 32 bit are invalid on v4 */
1158 if (af == AF_INET &&
1159 (m->addr32[1] || m->addr32[2] || m->addr32[3])) {
1160 fprintf(stderr, "netmask %u invalid for IPv4 address\n",
1161 unmask(m, AF_INET6));
1162 return (1);
1163 }
1164 }
1165 return (0);
1166 }
1167
1168 /* interface lookup routines */
1169
1170 static struct node_host *iftab;
1171
1172 /*
1173 * Retrieve the list of groups this interface is a member of and make sure
1174 * each group is in the group map.
1175 */
1176 static void
ifa_add_groups_to_map(char * ifa_name)1177 ifa_add_groups_to_map(char *ifa_name)
1178 {
1179 int s, len;
1180 struct ifgroupreq ifgr;
1181 struct ifg_req *ifg;
1182
1183 s = get_query_socket();
1184
1185 /* Get size of group list for this interface */
1186 memset(&ifgr, 0, sizeof(ifgr));
1187 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ);
1188 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1189 err(1, "SIOCGIFGROUP");
1190
1191 /* Retrieve group list for this interface */
1192 len = ifgr.ifgr_len;
1193 ifgr.ifgr_groups =
1194 (struct ifg_req *)calloc(len / sizeof(struct ifg_req),
1195 sizeof(struct ifg_req));
1196 if (ifgr.ifgr_groups == NULL)
1197 err(1, "calloc");
1198 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1199 err(1, "SIOCGIFGROUP");
1200
1201 ifg = ifgr.ifgr_groups;
1202 for (; ifg && len >= sizeof(struct ifg_req); ifg++) {
1203 len -= sizeof(struct ifg_req);
1204 if (strcmp(ifg->ifgrq_group, "all")) {
1205 ENTRY item;
1206 ENTRY *ret_item;
1207 int *answer;
1208
1209 item.key = ifg->ifgrq_group;
1210 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) {
1211 struct ifgroupreq ifgr2;
1212
1213 /* Don't know the answer yet */
1214 if ((answer = malloc(sizeof(int))) == NULL)
1215 err(1, "malloc");
1216
1217 bzero(&ifgr2, sizeof(ifgr2));
1218 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group,
1219 sizeof(ifgr2.ifgr_name));
1220 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0)
1221 *answer = ifgr2.ifgr_len;
1222 else
1223 *answer = 0;
1224
1225 item.key = strdup(ifg->ifgrq_group);
1226 item.data = answer;
1227 if (hsearch_r(item, ENTER, &ret_item,
1228 &isgroup_map) == 0)
1229 err(1, "interface group query response"
1230 " map insert");
1231 }
1232 }
1233 }
1234 free(ifgr.ifgr_groups);
1235 }
1236
1237 void
ifa_load(void)1238 ifa_load(void)
1239 {
1240 struct ifaddrs *ifap, *ifa;
1241 struct node_host *n = NULL, *h = NULL;
1242
1243 if (getifaddrs(&ifap) < 0)
1244 err(1, "getifaddrs");
1245
1246 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1247 if (!(ifa->ifa_addr->sa_family == AF_INET ||
1248 ifa->ifa_addr->sa_family == AF_INET6 ||
1249 ifa->ifa_addr->sa_family == AF_LINK))
1250 continue;
1251 n = calloc(1, sizeof(struct node_host));
1252 if (n == NULL)
1253 err(1, "address: calloc");
1254 n->af = ifa->ifa_addr->sa_family;
1255 n->ifa_flags = ifa->ifa_flags;
1256 #ifdef __KAME__
1257 if (n->af == AF_INET6 &&
1258 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
1259 ifa->ifa_addr)->sin6_addr) &&
1260 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
1261 0) {
1262 struct sockaddr_in6 *sin6;
1263
1264 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1265 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
1266 sin6->sin6_addr.s6_addr[3];
1267 sin6->sin6_addr.s6_addr[2] = 0;
1268 sin6->sin6_addr.s6_addr[3] = 0;
1269 }
1270 #endif
1271 n->ifindex = 0;
1272 if (n->af == AF_INET) {
1273 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *)
1274 ifa->ifa_addr)->sin_addr.s_addr,
1275 sizeof(struct in_addr));
1276 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *)
1277 ifa->ifa_netmask)->sin_addr.s_addr,
1278 sizeof(struct in_addr));
1279 if (ifa->ifa_broadaddr != NULL)
1280 memcpy(&n->bcast, &((struct sockaddr_in *)
1281 ifa->ifa_broadaddr)->sin_addr.s_addr,
1282 sizeof(struct in_addr));
1283 if (ifa->ifa_dstaddr != NULL)
1284 memcpy(&n->peer, &((struct sockaddr_in *)
1285 ifa->ifa_dstaddr)->sin_addr.s_addr,
1286 sizeof(struct in_addr));
1287 } else if (n->af == AF_INET6) {
1288 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *)
1289 ifa->ifa_addr)->sin6_addr.s6_addr,
1290 sizeof(struct in6_addr));
1291 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *)
1292 ifa->ifa_netmask)->sin6_addr.s6_addr,
1293 sizeof(struct in6_addr));
1294 if (ifa->ifa_broadaddr != NULL)
1295 memcpy(&n->bcast, &((struct sockaddr_in6 *)
1296 ifa->ifa_broadaddr)->sin6_addr.s6_addr,
1297 sizeof(struct in6_addr));
1298 if (ifa->ifa_dstaddr != NULL)
1299 memcpy(&n->peer, &((struct sockaddr_in6 *)
1300 ifa->ifa_dstaddr)->sin6_addr.s6_addr,
1301 sizeof(struct in6_addr));
1302 n->ifindex = ((struct sockaddr_in6 *)
1303 ifa->ifa_addr)->sin6_scope_id;
1304 } else if (n->af == AF_LINK) {
1305 ifa_add_groups_to_map(ifa->ifa_name);
1306 }
1307 if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
1308 err(1, "ifa_load: strdup");
1309 n->next = NULL;
1310 n->tail = n;
1311 if (h == NULL)
1312 h = n;
1313 else {
1314 h->tail->next = n;
1315 h->tail = n;
1316 }
1317 }
1318
1319 iftab = h;
1320 freeifaddrs(ifap);
1321 }
1322
1323 static int
get_socket_domain(void)1324 get_socket_domain(void)
1325 {
1326 int sdom;
1327
1328 sdom = AF_UNSPEC;
1329 #ifdef WITH_INET6
1330 if (sdom == AF_UNSPEC && feature_present("inet6"))
1331 sdom = AF_INET6;
1332 #endif
1333 #ifdef WITH_INET
1334 if (sdom == AF_UNSPEC && feature_present("inet"))
1335 sdom = AF_INET;
1336 #endif
1337 if (sdom == AF_UNSPEC)
1338 sdom = AF_LINK;
1339
1340 return (sdom);
1341 }
1342
1343 int
get_query_socket(void)1344 get_query_socket(void)
1345 {
1346 static int s = -1;
1347
1348 if (s == -1) {
1349 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1)
1350 err(1, "socket");
1351 }
1352
1353 return (s);
1354 }
1355
1356 /*
1357 * Returns the response len if the name is a group, otherwise returns 0.
1358 */
1359 static int
is_a_group(char * name)1360 is_a_group(char *name)
1361 {
1362 ENTRY item;
1363 ENTRY *ret_item;
1364
1365 item.key = name;
1366 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0)
1367 return (0);
1368
1369 return (*(int *)ret_item->data);
1370 }
1371
1372 struct node_host *
ifa_exists(char * ifa_name)1373 ifa_exists(char *ifa_name)
1374 {
1375 struct node_host *n;
1376
1377 if (iftab == NULL)
1378 ifa_load();
1379
1380 /* check whether this is a group */
1381 if (is_a_group(ifa_name)) {
1382 /* fake a node_host */
1383 if ((n = calloc(1, sizeof(*n))) == NULL)
1384 err(1, "calloc");
1385 if ((n->ifname = strdup(ifa_name)) == NULL)
1386 err(1, "strdup");
1387 return (n);
1388 }
1389
1390 for (n = iftab; n; n = n->next) {
1391 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
1392 return (n);
1393 }
1394
1395 return (NULL);
1396 }
1397
1398 struct node_host *
ifa_grouplookup(char * ifa_name,int flags)1399 ifa_grouplookup(char *ifa_name, int flags)
1400 {
1401 struct ifg_req *ifg;
1402 struct ifgroupreq ifgr;
1403 int s, len;
1404 struct node_host *n, *h = NULL;
1405
1406 s = get_query_socket();
1407 len = is_a_group(ifa_name);
1408 if (len == 0)
1409 return (NULL);
1410 bzero(&ifgr, sizeof(ifgr));
1411 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
1412 ifgr.ifgr_len = len;
1413 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
1414 err(1, "calloc");
1415 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
1416 err(1, "SIOCGIFGMEMB");
1417
1418 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req);
1419 ifg++) {
1420 len -= sizeof(struct ifg_req);
1421 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL)
1422 continue;
1423 if (h == NULL)
1424 h = n;
1425 else {
1426 h->tail->next = n;
1427 h->tail = n->tail;
1428 }
1429 }
1430 free(ifgr.ifgr_groups);
1431
1432 return (h);
1433 }
1434
1435 struct node_host *
ifa_lookup(char * ifa_name,int flags)1436 ifa_lookup(char *ifa_name, int flags)
1437 {
1438 struct node_host *p = NULL, *h = NULL, *n = NULL;
1439 int got4 = 0, got6 = 0;
1440 const char *last_if = NULL;
1441
1442 /* first load iftab and isgroup_map */
1443 if (iftab == NULL)
1444 ifa_load();
1445
1446 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL)
1447 return (h);
1448
1449 if (!strncmp(ifa_name, "self", IFNAMSIZ))
1450 ifa_name = NULL;
1451
1452 for (p = iftab; p; p = p->next) {
1453 if (ifa_skip_if(ifa_name, p))
1454 continue;
1455 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
1456 continue;
1457 if ((flags & PFI_AFLAG_BROADCAST) &&
1458 !(p->ifa_flags & IFF_BROADCAST))
1459 continue;
1460 if ((flags & PFI_AFLAG_PEER) &&
1461 !(p->ifa_flags & IFF_POINTOPOINT))
1462 continue;
1463 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
1464 continue;
1465 if (last_if == NULL || strcmp(last_if, p->ifname))
1466 got4 = got6 = 0;
1467 last_if = p->ifname;
1468 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
1469 continue;
1470 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 &&
1471 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6))
1472 continue;
1473 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
1474 continue;
1475 if (p->af == AF_INET)
1476 got4 = 1;
1477 else
1478 got6 = 1;
1479 n = calloc(1, sizeof(struct node_host));
1480 if (n == NULL)
1481 err(1, "address: calloc");
1482 n->af = p->af;
1483 if (flags & PFI_AFLAG_BROADCAST)
1484 memcpy(&n->addr.v.a.addr, &p->bcast,
1485 sizeof(struct pf_addr));
1486 else if (flags & PFI_AFLAG_PEER)
1487 memcpy(&n->addr.v.a.addr, &p->peer,
1488 sizeof(struct pf_addr));
1489 else
1490 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
1491 sizeof(struct pf_addr));
1492 if (flags & PFI_AFLAG_NETWORK)
1493 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af));
1494 else {
1495 if (n->af == AF_INET) {
1496 if (p->ifa_flags & IFF_LOOPBACK &&
1497 p->ifa_flags & IFF_LINK1)
1498 memcpy(&n->addr.v.a.mask,
1499 &p->addr.v.a.mask,
1500 sizeof(struct pf_addr));
1501 else
1502 set_ipmask(n, 32);
1503 } else
1504 set_ipmask(n, 128);
1505 }
1506 n->ifindex = p->ifindex;
1507 n->ifname = strdup(p->ifname);
1508
1509 n->next = NULL;
1510 n->tail = n;
1511 if (h == NULL)
1512 h = n;
1513 else {
1514 h->tail->next = n;
1515 h->tail = n;
1516 }
1517 }
1518 return (h);
1519 }
1520
1521 int
ifa_skip_if(const char * filter,struct node_host * p)1522 ifa_skip_if(const char *filter, struct node_host *p)
1523 {
1524 int n;
1525
1526 if (p->af != AF_INET && p->af != AF_INET6)
1527 return (1);
1528 if (filter == NULL || !*filter)
1529 return (0);
1530 if (!strcmp(p->ifname, filter))
1531 return (0); /* exact match */
1532 n = strlen(filter);
1533 if (n < 1 || n >= IFNAMSIZ)
1534 return (1); /* sanity check */
1535 if (filter[n-1] >= '0' && filter[n-1] <= '9')
1536 return (1); /* only do exact match in that case */
1537 if (strncmp(p->ifname, filter, n))
1538 return (1); /* prefix doesn't match */
1539 return (p->ifname[n] < '0' || p->ifname[n] > '9');
1540 }
1541
1542
1543 struct node_host *
host(const char * s)1544 host(const char *s)
1545 {
1546 struct node_host *h = NULL;
1547 int mask, v4mask, v6mask, cont = 1;
1548 char *p, *q, *ps;
1549
1550 if ((p = strrchr(s, '/')) != NULL) {
1551 mask = strtol(p+1, &q, 0);
1552 if (!q || *q || mask > 128 || q == (p+1)) {
1553 fprintf(stderr, "invalid netmask '%s'\n", p);
1554 return (NULL);
1555 }
1556 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
1557 err(1, "host: malloc");
1558 strlcpy(ps, s, strlen(s) - strlen(p) + 1);
1559 v4mask = v6mask = mask;
1560 } else {
1561 if ((ps = strdup(s)) == NULL)
1562 err(1, "host: strdup");
1563 v4mask = 32;
1564 v6mask = 128;
1565 mask = -1;
1566 }
1567
1568 /* IPv4 address? */
1569 if (cont && (h = host_v4(s, mask)) != NULL)
1570 cont = 0;
1571
1572 /* IPv6 address? */
1573 if (cont && (h = host_v6(ps, v6mask)) != NULL)
1574 cont = 0;
1575
1576 /* interface with this name exists? */
1577 /* expensive with thousands of interfaces - prioritze IPv4/6 check */
1578 if (cont && (h = host_if(ps, mask)) != NULL)
1579 cont = 0;
1580
1581 /* dns lookup */
1582 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL)
1583 cont = 0;
1584 free(ps);
1585
1586 if (h == NULL || cont == 1) {
1587 fprintf(stderr, "no IP address found for %s\n", s);
1588 return (NULL);
1589 }
1590 return (h);
1591 }
1592
1593 struct node_host *
host_if(const char * s,int mask)1594 host_if(const char *s, int mask)
1595 {
1596 struct node_host *n, *h = NULL;
1597 char *p, *ps;
1598 int flags = 0;
1599
1600 if ((ps = strdup(s)) == NULL)
1601 err(1, "host_if: strdup");
1602 while ((p = strrchr(ps, ':')) != NULL) {
1603 if (!strcmp(p+1, "network"))
1604 flags |= PFI_AFLAG_NETWORK;
1605 else if (!strcmp(p+1, "broadcast"))
1606 flags |= PFI_AFLAG_BROADCAST;
1607 else if (!strcmp(p+1, "peer"))
1608 flags |= PFI_AFLAG_PEER;
1609 else if (!strcmp(p+1, "0"))
1610 flags |= PFI_AFLAG_NOALIAS;
1611 else {
1612 free(ps);
1613 return (NULL);
1614 }
1615 *p = '\0';
1616 }
1617 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
1618 fprintf(stderr, "illegal combination of interface modifiers\n");
1619 free(ps);
1620 return (NULL);
1621 }
1622 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
1623 fprintf(stderr, "network or broadcast lookup, but "
1624 "extra netmask given\n");
1625 free(ps);
1626 return (NULL);
1627 }
1628 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) {
1629 /* interface with this name exists */
1630 h = ifa_lookup(ps, flags);
1631 for (n = h; n != NULL && mask > -1; n = n->next)
1632 set_ipmask(n, mask);
1633 }
1634
1635 free(ps);
1636 return (h);
1637 }
1638
1639 struct node_host *
host_v4(const char * s,int mask)1640 host_v4(const char *s, int mask)
1641 {
1642 struct node_host *h = NULL;
1643 struct in_addr ina;
1644 int bits = 32;
1645
1646 memset(&ina, 0, sizeof(struct in_addr));
1647 if (strrchr(s, '/') != NULL) {
1648 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1)
1649 return (NULL);
1650 } else {
1651 if (inet_pton(AF_INET, s, &ina) != 1)
1652 return (NULL);
1653 }
1654
1655 h = calloc(1, sizeof(struct node_host));
1656 if (h == NULL)
1657 err(1, "address: calloc");
1658 h->ifname = NULL;
1659 h->af = AF_INET;
1660 h->addr.v.a.addr.addr32[0] = ina.s_addr;
1661 set_ipmask(h, bits);
1662 h->next = NULL;
1663 h->tail = h;
1664
1665 return (h);
1666 }
1667
1668 struct node_host *
host_v6(const char * s,int mask)1669 host_v6(const char *s, int mask)
1670 {
1671 struct addrinfo hints, *res;
1672 struct node_host *h = NULL;
1673
1674 memset(&hints, 0, sizeof(hints));
1675 hints.ai_family = AF_INET6;
1676 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1677 hints.ai_flags = AI_NUMERICHOST;
1678 if (getaddrinfo(s, "0", &hints, &res) == 0) {
1679 h = calloc(1, sizeof(struct node_host));
1680 if (h == NULL)
1681 err(1, "address: calloc");
1682 h->ifname = NULL;
1683 h->af = AF_INET6;
1684 memcpy(&h->addr.v.a.addr,
1685 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
1686 sizeof(h->addr.v.a.addr));
1687 h->ifindex =
1688 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1689 set_ipmask(h, mask);
1690 freeaddrinfo(res);
1691 h->next = NULL;
1692 h->tail = h;
1693 }
1694
1695 return (h);
1696 }
1697
1698 struct node_host *
host_dns(const char * s,int v4mask,int v6mask)1699 host_dns(const char *s, int v4mask, int v6mask)
1700 {
1701 struct addrinfo hints, *res0, *res;
1702 struct node_host *n, *h = NULL;
1703 int error, noalias = 0;
1704 int got4 = 0, got6 = 0;
1705 char *p, *ps;
1706
1707 if ((ps = strdup(s)) == NULL)
1708 err(1, "host_dns: strdup");
1709 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
1710 noalias = 1;
1711 *p = '\0';
1712 }
1713 memset(&hints, 0, sizeof(hints));
1714 hints.ai_family = PF_UNSPEC;
1715 hints.ai_socktype = SOCK_STREAM; /* DUMMY */
1716 error = getaddrinfo(ps, NULL, &hints, &res0);
1717 if (error) {
1718 free(ps);
1719 return (h);
1720 }
1721
1722 for (res = res0; res; res = res->ai_next) {
1723 if (res->ai_family != AF_INET &&
1724 res->ai_family != AF_INET6)
1725 continue;
1726 if (noalias) {
1727 if (res->ai_family == AF_INET) {
1728 if (got4)
1729 continue;
1730 got4 = 1;
1731 } else {
1732 if (got6)
1733 continue;
1734 got6 = 1;
1735 }
1736 }
1737 n = calloc(1, sizeof(struct node_host));
1738 if (n == NULL)
1739 err(1, "host_dns: calloc");
1740 n->ifname = NULL;
1741 n->af = res->ai_family;
1742 if (res->ai_family == AF_INET) {
1743 memcpy(&n->addr.v.a.addr,
1744 &((struct sockaddr_in *)
1745 res->ai_addr)->sin_addr.s_addr,
1746 sizeof(struct in_addr));
1747 set_ipmask(n, v4mask);
1748 } else {
1749 memcpy(&n->addr.v.a.addr,
1750 &((struct sockaddr_in6 *)
1751 res->ai_addr)->sin6_addr.s6_addr,
1752 sizeof(struct in6_addr));
1753 n->ifindex =
1754 ((struct sockaddr_in6 *)
1755 res->ai_addr)->sin6_scope_id;
1756 set_ipmask(n, v6mask);
1757 }
1758 n->next = NULL;
1759 n->tail = n;
1760 if (h == NULL)
1761 h = n;
1762 else {
1763 h->tail->next = n;
1764 h->tail = n;
1765 }
1766 }
1767 freeaddrinfo(res0);
1768 free(ps);
1769
1770 return (h);
1771 }
1772
1773 /*
1774 * convert a hostname to a list of addresses and put them in the given buffer.
1775 * test:
1776 * if set to 1, only simple addresses are accepted (no netblock, no "!").
1777 */
1778 int
append_addr(struct pfr_buffer * b,char * s,int test)1779 append_addr(struct pfr_buffer *b, char *s, int test)
1780 {
1781 char *r;
1782 struct node_host *h, *n;
1783 int rv, not = 0;
1784
1785 for (r = s; *r == '!'; r++)
1786 not = !not;
1787 if ((n = host(r)) == NULL) {
1788 errno = 0;
1789 return (-1);
1790 }
1791 rv = append_addr_host(b, n, test, not);
1792 do {
1793 h = n;
1794 n = n->next;
1795 free(h);
1796 } while (n != NULL);
1797 return (rv);
1798 }
1799
1800 /*
1801 * same as previous function, but with a pre-parsed input and the ability
1802 * to "negate" the result. Does not free the node_host list.
1803 * not:
1804 * setting it to 1 is equivalent to adding "!" in front of parameter s.
1805 */
1806 int
append_addr_host(struct pfr_buffer * b,struct node_host * n,int test,int not)1807 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
1808 {
1809 int bits;
1810 struct pfr_addr addr;
1811
1812 do {
1813 bzero(&addr, sizeof(addr));
1814 addr.pfra_not = n->not ^ not;
1815 addr.pfra_af = n->af;
1816 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af);
1817 switch (n->af) {
1818 case AF_INET:
1819 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
1820 bits = 32;
1821 break;
1822 case AF_INET6:
1823 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
1824 sizeof(struct in6_addr));
1825 bits = 128;
1826 break;
1827 default:
1828 errno = EINVAL;
1829 return (-1);
1830 }
1831 if ((test && (not || addr.pfra_net != bits)) ||
1832 addr.pfra_net > bits) {
1833 errno = EINVAL;
1834 return (-1);
1835 }
1836 if (pfr_buf_add(b, &addr))
1837 return (-1);
1838 } while ((n = n->next) != NULL);
1839
1840 return (0);
1841 }
1842
1843 int
pfctl_add_trans(struct pfr_buffer * buf,int rs_num,const char * anchor)1844 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor)
1845 {
1846 struct pfioc_trans_e trans;
1847
1848 bzero(&trans, sizeof(trans));
1849 trans.rs_num = rs_num;
1850 if (strlcpy(trans.anchor, anchor,
1851 sizeof(trans.anchor)) >= sizeof(trans.anchor))
1852 errx(1, "pfctl_add_trans: strlcpy");
1853
1854 return pfr_buf_add(buf, &trans);
1855 }
1856
1857 u_int32_t
pfctl_get_ticket(struct pfr_buffer * buf,int rs_num,const char * anchor)1858 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor)
1859 {
1860 struct pfioc_trans_e *p;
1861
1862 PFRB_FOREACH(p, buf)
1863 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor))
1864 return (p->ticket);
1865 errx(1, "pfctl_get_ticket: assertion failed");
1866 }
1867
1868 int
pfctl_trans(int dev,struct pfr_buffer * buf,u_long cmd,int from)1869 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
1870 {
1871 struct pfioc_trans trans;
1872
1873 bzero(&trans, sizeof(trans));
1874 trans.size = buf->pfrb_size - from;
1875 trans.esize = sizeof(struct pfioc_trans_e);
1876 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
1877 return ioctl(dev, cmd, &trans);
1878 }
1879