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 #include <sys/types.h>
38 #include <sys/ioctl.h>
39 #include <sys/socket.h>
40 #include <sys/param.h>
41 #include <sys/proc.h>
42 #include <net/if.h>
43 #include <netinet/in.h>
44 #include <netinet/in_systm.h>
45 #include <netinet/ip.h>
46 #include <netinet/ip_icmp.h>
47 #include <netinet/icmp6.h>
48 #include <net/pfvar.h>
49 #include <arpa/inet.h>
50
51 #include <assert.h>
52 #include <search.h>
53 #include <stdio.h>
54 #include <stdlib.h>
55 #include <string.h>
56 #include <ctype.h>
57 #include <netdb.h>
58 #include <stdarg.h>
59 #include <errno.h>
60 #include <err.h>
61 #include <ifaddrs.h>
62 #include <unistd.h>
63
64 #include "pfctl_parser.h"
65 #include "pfctl.h"
66
67 void print_op (u_int8_t, const char *, const char *);
68 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int);
69 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned);
70 void print_flags (u_int8_t);
71 void print_fromto(struct pf_rule_addr *, pf_osfp_t,
72 struct pf_rule_addr *, u_int8_t, u_int8_t, int, int);
73 int ifa_skip_if(const char *filter, struct node_host *p);
74
75 struct node_host *host_if(const char *, int, int *);
76 struct node_host *host_v4(const char *, int);
77 struct node_host *host_v6(const char *, int);
78 struct node_host *host_dns(const char *, int, int);
79
80 const char * const tcpflags = "FSRPAUEW";
81
82 static const struct icmptypeent icmp_type[] = {
83 { "echoreq", ICMP_ECHO },
84 { "echorep", ICMP_ECHOREPLY },
85 { "unreach", ICMP_UNREACH },
86 { "squench", ICMP_SOURCEQUENCH },
87 { "redir", ICMP_REDIRECT },
88 { "althost", ICMP_ALTHOSTADDR },
89 { "routeradv", ICMP_ROUTERADVERT },
90 { "routersol", ICMP_ROUTERSOLICIT },
91 { "timex", ICMP_TIMXCEED },
92 { "paramprob", ICMP_PARAMPROB },
93 { "timereq", ICMP_TSTAMP },
94 { "timerep", ICMP_TSTAMPREPLY },
95 { "inforeq", ICMP_IREQ },
96 { "inforep", ICMP_IREQREPLY },
97 { "maskreq", ICMP_MASKREQ },
98 { "maskrep", ICMP_MASKREPLY },
99 { "trace", ICMP_TRACEROUTE },
100 { "dataconv", ICMP_DATACONVERR },
101 { "mobredir", ICMP_MOBILE_REDIRECT },
102 { "ipv6-where", ICMP_IPV6_WHEREAREYOU },
103 { "ipv6-here", ICMP_IPV6_IAMHERE },
104 { "mobregreq", ICMP_MOBILE_REGREQUEST },
105 { "mobregrep", ICMP_MOBILE_REGREPLY },
106 { "skip", ICMP_SKIP },
107 { "photuris", ICMP_PHOTURIS }
108 };
109
110 static const struct icmptypeent icmp6_type[] = {
111 { "unreach", ICMP6_DST_UNREACH },
112 { "toobig", ICMP6_PACKET_TOO_BIG },
113 { "timex", ICMP6_TIME_EXCEEDED },
114 { "paramprob", ICMP6_PARAM_PROB },
115 { "echoreq", ICMP6_ECHO_REQUEST },
116 { "echorep", ICMP6_ECHO_REPLY },
117 { "groupqry", ICMP6_MEMBERSHIP_QUERY },
118 { "listqry", MLD_LISTENER_QUERY },
119 { "grouprep", ICMP6_MEMBERSHIP_REPORT },
120 { "listenrep", MLD_LISTENER_REPORT },
121 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION },
122 { "listendone", MLD_LISTENER_DONE },
123 { "routersol", ND_ROUTER_SOLICIT },
124 { "routeradv", ND_ROUTER_ADVERT },
125 { "neighbrsol", ND_NEIGHBOR_SOLICIT },
126 { "neighbradv", ND_NEIGHBOR_ADVERT },
127 { "redir", ND_REDIRECT },
128 { "routrrenum", ICMP6_ROUTER_RENUMBERING },
129 { "wrureq", ICMP6_WRUREQUEST },
130 { "wrurep", ICMP6_WRUREPLY },
131 { "fqdnreq", ICMP6_FQDN_QUERY },
132 { "fqdnrep", ICMP6_FQDN_REPLY },
133 { "niqry", ICMP6_NI_QUERY },
134 { "nirep", ICMP6_NI_REPLY },
135 { "mtraceresp", MLD_MTRACE_RESP },
136 { "mtrace", MLD_MTRACE }
137 };
138
139 static const struct icmpcodeent icmp_code[] = {
140 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET },
141 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST },
142 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL },
143 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT },
144 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG },
145 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL },
146 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN },
147 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN },
148 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED },
149 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB },
150 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB },
151 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET },
152 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST },
153 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB },
154 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE },
155 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF },
156 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET },
157 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST },
158 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET },
159 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST },
160 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL },
161 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON },
162 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS },
163 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS },
164 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR },
165 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT },
166 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH },
167 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX },
168 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED },
169 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED }
170 };
171
172 static const struct icmpcodeent icmp6_code[] = {
173 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN },
174 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE },
175 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR },
176 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE },
177 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR },
178 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT },
179 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT },
180 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY },
181 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER },
182 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER },
183 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK },
184 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER }
185 };
186
187 const struct pf_timeout pf_timeouts[] = {
188 { "tcp.first", PFTM_TCP_FIRST_PACKET },
189 { "tcp.opening", PFTM_TCP_OPENING },
190 { "tcp.established", PFTM_TCP_ESTABLISHED },
191 { "tcp.closing", PFTM_TCP_CLOSING },
192 { "tcp.finwait", PFTM_TCP_FIN_WAIT },
193 { "tcp.closed", PFTM_TCP_CLOSED },
194 { "tcp.tsdiff", PFTM_TS_DIFF },
195 { "sctp.first", PFTM_SCTP_FIRST_PACKET },
196 { "sctp.opening", PFTM_SCTP_OPENING },
197 { "sctp.established", PFTM_SCTP_ESTABLISHED },
198 { "sctp.closing", PFTM_SCTP_CLOSING },
199 { "sctp.closed", PFTM_SCTP_CLOSED },
200 { "udp.first", PFTM_UDP_FIRST_PACKET },
201 { "udp.single", PFTM_UDP_SINGLE },
202 { "udp.multiple", PFTM_UDP_MULTIPLE },
203 { "icmp.first", PFTM_ICMP_FIRST_PACKET },
204 { "icmp.error", PFTM_ICMP_ERROR_REPLY },
205 { "other.first", PFTM_OTHER_FIRST_PACKET },
206 { "other.single", PFTM_OTHER_SINGLE },
207 { "other.multiple", PFTM_OTHER_MULTIPLE },
208 { "frag", PFTM_FRAG },
209 { "interval", PFTM_INTERVAL },
210 { "adaptive.start", PFTM_ADAPTIVE_START },
211 { "adaptive.end", PFTM_ADAPTIVE_END },
212 { "src.track", PFTM_SRC_NODE },
213 { NULL, 0 }
214 };
215
216 static struct hsearch_data isgroup_map;
217
218 static __attribute__((constructor)) void
pfctl_parser_init(void)219 pfctl_parser_init(void)
220 {
221 /*
222 * As hdestroy() will never be called on these tables, it will be
223 * safe to use references into the stored data as keys.
224 */
225 if (hcreate_r(0, &isgroup_map) == 0)
226 err(1, "Failed to create interface group query response map");
227 }
228
229 const struct icmptypeent *
geticmptypebynumber(u_int8_t type,sa_family_t af)230 geticmptypebynumber(u_int8_t type, sa_family_t af)
231 {
232 unsigned int i;
233
234 if (af != AF_INET6) {
235 for (i=0; i < nitems(icmp_type); i++) {
236 if (type == icmp_type[i].type)
237 return (&icmp_type[i]);
238 }
239 } else {
240 for (i=0; i < nitems(icmp6_type); i++) {
241 if (type == icmp6_type[i].type)
242 return (&icmp6_type[i]);
243 }
244 }
245 return (NULL);
246 }
247
248 const struct icmptypeent *
geticmptypebyname(char * w,sa_family_t af)249 geticmptypebyname(char *w, sa_family_t af)
250 {
251 unsigned int i;
252
253 if (af != AF_INET6) {
254 for (i=0; i < nitems(icmp_type); i++) {
255 if (!strcmp(w, icmp_type[i].name))
256 return (&icmp_type[i]);
257 }
258 } else {
259 for (i=0; i < nitems(icmp6_type); i++) {
260 if (!strcmp(w, icmp6_type[i].name))
261 return (&icmp6_type[i]);
262 }
263 }
264 return (NULL);
265 }
266
267 const struct icmpcodeent *
geticmpcodebynumber(u_int8_t type,u_int8_t code,sa_family_t af)268 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af)
269 {
270 unsigned int i;
271
272 if (af != AF_INET6) {
273 for (i=0; i < nitems(icmp_code); i++) {
274 if (type == icmp_code[i].type &&
275 code == icmp_code[i].code)
276 return (&icmp_code[i]);
277 }
278 } else {
279 for (i=0; i < nitems(icmp6_code); i++) {
280 if (type == icmp6_code[i].type &&
281 code == icmp6_code[i].code)
282 return (&icmp6_code[i]);
283 }
284 }
285 return (NULL);
286 }
287
288 const struct icmpcodeent *
geticmpcodebyname(u_long type,char * w,sa_family_t af)289 geticmpcodebyname(u_long type, char *w, sa_family_t af)
290 {
291 unsigned int i;
292
293 if (af != AF_INET6) {
294 for (i=0; i < nitems(icmp_code); i++) {
295 if (type == icmp_code[i].type &&
296 !strcmp(w, icmp_code[i].name))
297 return (&icmp_code[i]);
298 }
299 } else {
300 for (i=0; i < nitems(icmp6_code); i++) {
301 if (type == icmp6_code[i].type &&
302 !strcmp(w, icmp6_code[i].name))
303 return (&icmp6_code[i]);
304 }
305 }
306 return (NULL);
307 }
308
309 void
print_op(u_int8_t op,const char * a1,const char * a2)310 print_op(u_int8_t op, const char *a1, const char *a2)
311 {
312 if (op == PF_OP_IRG)
313 printf(" %s >< %s", a1, a2);
314 else if (op == PF_OP_XRG)
315 printf(" %s <> %s", a1, a2);
316 else if (op == PF_OP_EQ)
317 printf(" = %s", a1);
318 else if (op == PF_OP_NE)
319 printf(" != %s", a1);
320 else if (op == PF_OP_LT)
321 printf(" < %s", a1);
322 else if (op == PF_OP_LE)
323 printf(" <= %s", a1);
324 else if (op == PF_OP_GT)
325 printf(" > %s", a1);
326 else if (op == PF_OP_GE)
327 printf(" >= %s", a1);
328 else if (op == PF_OP_RRG)
329 printf(" %s:%s", a1, a2);
330 }
331
332 void
print_port(u_int8_t op,u_int16_t p1,u_int16_t p2,const char * proto,int numeric)333 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric)
334 {
335 char a1[6], a2[6];
336 struct servent *s;
337
338 if (!numeric)
339 s = getservbyport(p1, proto);
340 else
341 s = NULL;
342 p1 = ntohs(p1);
343 p2 = ntohs(p2);
344 snprintf(a1, sizeof(a1), "%u", p1);
345 snprintf(a2, sizeof(a2), "%u", p2);
346 printf(" port");
347 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE))
348 print_op(op, s->s_name, a2);
349 else
350 print_op(op, a1, a2);
351 }
352
353 void
print_ugid(u_int8_t op,unsigned u1,unsigned u2,const char * t,unsigned umax)354 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax)
355 {
356 char a1[11], a2[11];
357
358 snprintf(a1, sizeof(a1), "%u", u1);
359 snprintf(a2, sizeof(a2), "%u", u2);
360 printf(" %s", t);
361 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE))
362 print_op(op, "unknown", a2);
363 else
364 print_op(op, a1, a2);
365 }
366
367 void
print_flags(u_int8_t f)368 print_flags(u_int8_t f)
369 {
370 int i;
371
372 for (i = 0; tcpflags[i]; ++i)
373 if (f & (1 << i))
374 printf("%c", tcpflags[i]);
375 }
376
377 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)378 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst,
379 sa_family_t af, u_int8_t proto, int verbose, int numeric)
380 {
381 char buf[PF_OSFP_LEN*3];
382 if (src->addr.type == PF_ADDR_ADDRMASK &&
383 dst->addr.type == PF_ADDR_ADDRMASK &&
384 PF_AZERO(&src->addr.v.a.addr, AF_INET6) &&
385 PF_AZERO(&src->addr.v.a.mask, AF_INET6) &&
386 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) &&
387 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) &&
388 !src->neg && !dst->neg &&
389 !src->port_op && !dst->port_op &&
390 osfp == PF_OSFP_ANY)
391 printf(" all");
392 else {
393 printf(" from ");
394 if (src->neg)
395 printf("! ");
396 print_addr(&src->addr, af, verbose);
397 if (src->port_op)
398 print_port(src->port_op, src->port[0],
399 src->port[1],
400 proto == IPPROTO_TCP ? "tcp" : "udp",
401 numeric);
402 if (osfp != PF_OSFP_ANY)
403 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf,
404 sizeof(buf)));
405
406 printf(" to ");
407 if (dst->neg)
408 printf("! ");
409 print_addr(&dst->addr, af, verbose);
410 if (dst->port_op)
411 print_port(dst->port_op, dst->port[0],
412 dst->port[1],
413 proto == IPPROTO_TCP ? "tcp" : "udp",
414 numeric);
415 }
416 }
417
418 void
print_pool(struct pfctl_pool * pool,u_int16_t p1,u_int16_t p2,sa_family_t af,int id)419 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2,
420 sa_family_t af, int id)
421 {
422 struct pf_pooladdr *pooladdr;
423
424 if ((TAILQ_FIRST(&pool->list) != NULL) &&
425 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
426 printf("{ ");
427 TAILQ_FOREACH(pooladdr, &pool->list, entries){
428 switch (id) {
429 case PF_NAT:
430 case PF_RDR:
431 case PF_BINAT:
432 print_addr(&pooladdr->addr, af, 0);
433 break;
434 case PF_PASS:
435 if (PF_AZERO(&pooladdr->addr.v.a.addr, af))
436 printf("%s", pooladdr->ifname);
437 else {
438 printf("(%s ", pooladdr->ifname);
439 print_addr(&pooladdr->addr, af, 0);
440 printf(")");
441 }
442 break;
443 default:
444 break;
445 }
446 if (TAILQ_NEXT(pooladdr, entries) != NULL)
447 printf(", ");
448 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
449 printf(" }");
450 }
451 switch (id) {
452 case PF_NAT:
453 if ((p1 != PF_NAT_PROXY_PORT_LOW ||
454 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) {
455 if (p1 == p2)
456 printf(" port %u", p1);
457 else
458 printf(" port %u:%u", p1, p2);
459 }
460 break;
461 case PF_RDR:
462 if (p1) {
463 printf(" port %u", p1);
464 if (p2 && (p2 != p1))
465 printf(":%u", p2);
466 }
467 break;
468 default:
469 break;
470 }
471 switch (pool->opts & PF_POOL_TYPEMASK) {
472 case PF_POOL_NONE:
473 break;
474 case PF_POOL_BITMASK:
475 printf(" bitmask");
476 break;
477 case PF_POOL_RANDOM:
478 printf(" random");
479 break;
480 case PF_POOL_SRCHASH:
481 printf(" source-hash 0x%08x%08x%08x%08x",
482 pool->key.key32[0], pool->key.key32[1],
483 pool->key.key32[2], pool->key.key32[3]);
484 break;
485 case PF_POOL_ROUNDROBIN:
486 printf(" round-robin");
487 break;
488 }
489 if (pool->opts & PF_POOL_STICKYADDR)
490 printf(" sticky-address");
491 if (id == PF_NAT && p1 == 0 && p2 == 0)
492 printf(" static-port");
493 if (pool->mape.offset > 0)
494 printf(" map-e-portset %u/%u/%u",
495 pool->mape.offset, pool->mape.psidlen, pool->mape.psid);
496 }
497
498 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES;
499 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES;
500 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES;
501 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES;
502
503 void
print_status(struct pfctl_status * s,struct pfctl_syncookies * cookies,int opts)504 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts)
505 {
506 struct pfctl_status_counter *c;
507 char statline[80], *running;
508 time_t runtime;
509 int i;
510 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1];
511 static const char hex[] = "0123456789abcdef";
512
513 runtime = time(NULL) - s->since;
514 running = s->running ? "Enabled" : "Disabled";
515
516 if (s->since) {
517 unsigned int sec, min, hrs, day = runtime;
518
519 sec = day % 60;
520 day /= 60;
521 min = day % 60;
522 day /= 60;
523 hrs = day % 24;
524 day /= 24;
525 snprintf(statline, sizeof(statline),
526 "Status: %s for %u days %.2u:%.2u:%.2u",
527 running, day, hrs, min, sec);
528 } else
529 snprintf(statline, sizeof(statline), "Status: %s", running);
530 printf("%-44s", statline);
531 switch (s->debug) {
532 case PF_DEBUG_NONE:
533 printf("%15s\n\n", "Debug: None");
534 break;
535 case PF_DEBUG_URGENT:
536 printf("%15s\n\n", "Debug: Urgent");
537 break;
538 case PF_DEBUG_MISC:
539 printf("%15s\n\n", "Debug: Misc");
540 break;
541 case PF_DEBUG_NOISY:
542 printf("%15s\n\n", "Debug: Loud");
543 break;
544 }
545
546 if (opts & PF_OPT_VERBOSE) {
547 printf("Hostid: 0x%08x\n", s->hostid);
548
549 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) {
550 buf[i + i] = hex[s->pf_chksum[i] >> 4];
551 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f];
552 }
553 buf[i + i] = '\0';
554 printf("Checksum: 0x%s\n\n", buf);
555 }
556
557 if (s->ifname[0] != 0) {
558 printf("Interface Stats for %-16s %5s %16s\n",
559 s->ifname, "IPv4", "IPv6");
560 printf(" %-25s %14llu %16llu\n", "Bytes In",
561 (unsigned long long)s->bcounters[0][0],
562 (unsigned long long)s->bcounters[1][0]);
563 printf(" %-25s %14llu %16llu\n", "Bytes Out",
564 (unsigned long long)s->bcounters[0][1],
565 (unsigned long long)s->bcounters[1][1]);
566 printf(" Packets In\n");
567 printf(" %-23s %14llu %16llu\n", "Passed",
568 (unsigned long long)s->pcounters[0][0][PF_PASS],
569 (unsigned long long)s->pcounters[1][0][PF_PASS]);
570 printf(" %-23s %14llu %16llu\n", "Blocked",
571 (unsigned long long)s->pcounters[0][0][PF_DROP],
572 (unsigned long long)s->pcounters[1][0][PF_DROP]);
573 printf(" Packets Out\n");
574 printf(" %-23s %14llu %16llu\n", "Passed",
575 (unsigned long long)s->pcounters[0][1][PF_PASS],
576 (unsigned long long)s->pcounters[1][1][PF_PASS]);
577 printf(" %-23s %14llu %16llu\n\n", "Blocked",
578 (unsigned long long)s->pcounters[0][1][PF_DROP],
579 (unsigned long long)s->pcounters[1][1][PF_DROP]);
580 }
581 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
582 printf(" %-25s %14ju %14s\n", "current entries", s->states, "");
583 TAILQ_FOREACH(c, &s->fcounters, entry) {
584 printf(" %-25s %14ju ", c->name, c->counter);
585 if (runtime > 0)
586 printf("%14.1f/s\n",
587 (double)c->counter / (double)runtime);
588 else
589 printf("%14s\n", "");
590 }
591 if (opts & PF_OPT_VERBOSE) {
592 printf("Source Tracking Table\n");
593 printf(" %-25s %14ju %14s\n", "current entries",
594 s->src_nodes, "");
595 TAILQ_FOREACH(c, &s->scounters, entry) {
596 printf(" %-25s %14ju ", c->name, c->counter);
597 if (runtime > 0)
598 printf("%14.1f/s\n",
599 (double)c->counter / (double)runtime);
600 else
601 printf("%14s\n", "");
602 }
603 }
604 printf("Counters\n");
605 TAILQ_FOREACH(c, &s->counters, entry) {
606 printf(" %-25s %14ju ", c->name, c->counter);
607 if (runtime > 0)
608 printf("%14.1f/s\n",
609 (double)c->counter / (double)runtime);
610 else
611 printf("%14s\n", "");
612 }
613 if (opts & PF_OPT_VERBOSE) {
614 printf("Limit Counters\n");
615 TAILQ_FOREACH(c, &s->lcounters, entry) {
616 printf(" %-25s %14ju ", c->name, c->counter);
617 if (runtime > 0)
618 printf("%14.1f/s\n",
619 (double)c->counter / (double)runtime);
620 else
621 printf("%14s\n", "");
622 }
623
624 printf("Syncookies\n");
625 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE);
626 printf(" %-25s %s\n", "mode",
627 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]);
628 printf(" %-25s %s\n", "active",
629 s->syncookies_active ? "active" : "inactive");
630 if (opts & PF_OPT_VERBOSE2) {
631 printf(" %-25s %d %%\n", "highwater", cookies->highwater);
632 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater);
633 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states);
634 }
635 }
636 }
637
638 void
print_running(struct pfctl_status * status)639 print_running(struct pfctl_status *status)
640 {
641 printf("%s\n", status->running ? "Enabled" : "Disabled");
642 }
643
644 void
print_src_node(struct pf_src_node * sn,int opts)645 print_src_node(struct pf_src_node *sn, int opts)
646 {
647 struct pf_addr_wrap aw;
648 int min, sec;
649
650 memset(&aw, 0, sizeof(aw));
651 if (sn->af == AF_INET)
652 aw.v.a.mask.addr32[0] = 0xffffffff;
653 else
654 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
655
656 aw.v.a.addr = sn->addr;
657 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
658 printf(" -> ");
659 aw.v.a.addr = sn->raddr;
660 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
661 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states,
662 sn->conn, sn->conn_rate.count / 1000,
663 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds);
664 if (opts & PF_OPT_VERBOSE) {
665 sec = sn->creation % 60;
666 sn->creation /= 60;
667 min = sn->creation % 60;
668 sn->creation /= 60;
669 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec);
670 if (sn->states == 0) {
671 sec = sn->expire % 60;
672 sn->expire /= 60;
673 min = sn->expire % 60;
674 sn->expire /= 60;
675 printf(", expires in %.2u:%.2u:%.2u",
676 sn->expire, min, sec);
677 }
678 printf(", %llu pkts, %llu bytes",
679 #ifdef __FreeBSD__
680 (unsigned long long)(sn->packets[0] + sn->packets[1]),
681 (unsigned long long)(sn->bytes[0] + sn->bytes[1]));
682 #else
683 sn->packets[0] + sn->packets[1],
684 sn->bytes[0] + sn->bytes[1]);
685 #endif
686 switch (sn->ruletype) {
687 case PF_NAT:
688 if (sn->rule.nr != -1)
689 printf(", nat rule %u", sn->rule.nr);
690 break;
691 case PF_RDR:
692 if (sn->rule.nr != -1)
693 printf(", rdr rule %u", sn->rule.nr);
694 break;
695 case PF_PASS:
696 if (sn->rule.nr != -1)
697 printf(", filter rule %u", sn->rule.nr);
698 break;
699 }
700 printf("\n");
701 }
702 }
703
704 void
print_rule(struct pfctl_rule * r,const char * anchor_call,int verbose,int numeric)705 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric)
706 {
707 static const char *actiontypes[] = { "pass", "block", "scrub",
708 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" };
709 static const char *anchortypes[] = { "anchor", "anchor", "anchor",
710 "anchor", "nat-anchor", "nat-anchor", "binat-anchor",
711 "binat-anchor", "rdr-anchor", "rdr-anchor" };
712 int i, opts;
713 char *p;
714
715 if (verbose)
716 printf("@%d ", r->nr);
717 if (r->action == PF_MATCH)
718 printf("match");
719 else if (r->action > PF_NORDR)
720 printf("action(%d)", r->action);
721 else if (anchor_call[0]) {
722 p = strrchr(anchor_call, '/');
723 if (p ? p[1] == '_' : anchor_call[0] == '_')
724 printf("%s", anchortypes[r->action]);
725 else
726 printf("%s \"%s\"", anchortypes[r->action],
727 anchor_call);
728 } else {
729 printf("%s", actiontypes[r->action]);
730 if (r->natpass)
731 printf(" pass");
732 }
733 if (r->action == PF_DROP) {
734 if (r->rule_flag & PFRULE_RETURN)
735 printf(" return");
736 else if (r->rule_flag & PFRULE_RETURNRST) {
737 if (!r->return_ttl)
738 printf(" return-rst");
739 else
740 printf(" return-rst(ttl %d)", r->return_ttl);
741 } else if (r->rule_flag & PFRULE_RETURNICMP) {
742 const struct icmpcodeent *ic, *ic6;
743
744 ic = geticmpcodebynumber(r->return_icmp >> 8,
745 r->return_icmp & 255, AF_INET);
746 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
747 r->return_icmp6 & 255, AF_INET6);
748
749 switch (r->af) {
750 case AF_INET:
751 printf(" return-icmp");
752 if (ic == NULL)
753 printf("(%u)", r->return_icmp & 255);
754 else
755 printf("(%s)", ic->name);
756 break;
757 case AF_INET6:
758 printf(" return-icmp6");
759 if (ic6 == NULL)
760 printf("(%u)", r->return_icmp6 & 255);
761 else
762 printf("(%s)", ic6->name);
763 break;
764 default:
765 printf(" return-icmp");
766 if (ic == NULL)
767 printf("(%u, ", r->return_icmp & 255);
768 else
769 printf("(%s, ", ic->name);
770 if (ic6 == NULL)
771 printf("%u)", r->return_icmp6 & 255);
772 else
773 printf("%s)", ic6->name);
774 break;
775 }
776 } else
777 printf(" drop");
778 }
779 if (r->direction == PF_IN)
780 printf(" in");
781 else if (r->direction == PF_OUT)
782 printf(" out");
783 if (r->log) {
784 printf(" log");
785 if (r->log & ~PF_LOG || r->logif) {
786 int count = 0;
787
788 printf(" (");
789 if (r->log & PF_LOG_ALL)
790 printf("%sall", count++ ? ", " : "");
791 if (r->log & PF_LOG_SOCKET_LOOKUP)
792 printf("%suser", count++ ? ", " : "");
793 if (r->logif)
794 printf("%sto pflog%u", count++ ? ", " : "",
795 r->logif);
796 printf(")");
797 }
798 }
799 if (r->quick)
800 printf(" quick");
801 if (r->ifname[0]) {
802 if (r->ifnot)
803 printf(" on ! %s", r->ifname);
804 else
805 printf(" on %s", r->ifname);
806 }
807 if (r->rt) {
808 if (r->rt == PF_ROUTETO)
809 printf(" route-to");
810 else if (r->rt == PF_REPLYTO)
811 printf(" reply-to");
812 else if (r->rt == PF_DUPTO)
813 printf(" dup-to");
814 printf(" ");
815 print_pool(&r->rpool, 0, 0, r->af, PF_PASS);
816 }
817 if (r->af) {
818 if (r->af == AF_INET)
819 printf(" inet");
820 else
821 printf(" inet6");
822 }
823 if (r->proto) {
824 const char *protoname;
825
826 if ((protoname = pfctl_proto2name(r->proto)) != NULL)
827 printf(" proto %s", protoname);
828 else
829 printf(" proto %u", r->proto);
830 }
831 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto,
832 verbose, numeric);
833 if (r->uid.op)
834 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user",
835 UID_MAX);
836 if (r->gid.op)
837 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group",
838 GID_MAX);
839 if (r->flags || r->flagset) {
840 printf(" flags ");
841 print_flags(r->flags);
842 printf("/");
843 print_flags(r->flagset);
844 } else if (r->action == PF_PASS &&
845 (!r->proto || r->proto == IPPROTO_TCP) &&
846 !(r->rule_flag & PFRULE_FRAGMENT) &&
847 !anchor_call[0] && r->keep_state)
848 printf(" flags any");
849 if (r->type) {
850 const struct icmptypeent *it;
851
852 it = geticmptypebynumber(r->type-1, r->af);
853 if (r->af != AF_INET6)
854 printf(" icmp-type");
855 else
856 printf(" icmp6-type");
857 if (it != NULL)
858 printf(" %s", it->name);
859 else
860 printf(" %u", r->type-1);
861 if (r->code) {
862 const struct icmpcodeent *ic;
863
864 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
865 if (ic != NULL)
866 printf(" code %s", ic->name);
867 else
868 printf(" code %u", r->code-1);
869 }
870 }
871 if (r->tos)
872 printf(" tos 0x%2.2x", r->tos);
873 if (r->prio)
874 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio);
875 if (r->scrub_flags & PFSTATE_SETMASK) {
876 char *comma = "";
877 printf(" set (");
878 if (r->scrub_flags & PFSTATE_SETPRIO) {
879 if (r->set_prio[0] == r->set_prio[1])
880 printf("%s prio %u", comma, r->set_prio[0]);
881 else
882 printf("%s prio(%u, %u)", comma, r->set_prio[0],
883 r->set_prio[1]);
884 comma = ",";
885 }
886 printf(" )");
887 }
888 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0])
889 printf(" no state");
890 else if (r->keep_state == PF_STATE_NORMAL)
891 printf(" keep state");
892 else if (r->keep_state == PF_STATE_MODULATE)
893 printf(" modulate state");
894 else if (r->keep_state == PF_STATE_SYNPROXY)
895 printf(" synproxy state");
896 if (r->prob) {
897 char buf[20];
898
899 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
900 for (i = strlen(buf)-1; i > 0; i--) {
901 if (buf[i] == '0')
902 buf[i] = '\0';
903 else {
904 if (buf[i] == '.')
905 buf[i] = '\0';
906 break;
907 }
908 }
909 printf(" probability %s%%", buf);
910 }
911 opts = 0;
912 if (r->max_states || r->max_src_nodes || r->max_src_states)
913 opts = 1;
914 if (r->rule_flag & PFRULE_NOSYNC)
915 opts = 1;
916 if (r->rule_flag & PFRULE_SRCTRACK)
917 opts = 1;
918 if (r->rule_flag & PFRULE_IFBOUND)
919 opts = 1;
920 if (r->rule_flag & PFRULE_STATESLOPPY)
921 opts = 1;
922 for (i = 0; !opts && i < PFTM_MAX; ++i)
923 if (r->timeout[i])
924 opts = 1;
925 if (opts) {
926 printf(" (");
927 if (r->max_states) {
928 printf("max %u", r->max_states);
929 opts = 0;
930 }
931 if (r->rule_flag & PFRULE_NOSYNC) {
932 if (!opts)
933 printf(", ");
934 printf("no-sync");
935 opts = 0;
936 }
937 if (r->rule_flag & PFRULE_SRCTRACK) {
938 if (!opts)
939 printf(", ");
940 printf("source-track");
941 if (r->rule_flag & PFRULE_RULESRCTRACK)
942 printf(" rule");
943 else
944 printf(" global");
945 opts = 0;
946 }
947 if (r->max_src_states) {
948 if (!opts)
949 printf(", ");
950 printf("max-src-states %u", r->max_src_states);
951 opts = 0;
952 }
953 if (r->max_src_conn) {
954 if (!opts)
955 printf(", ");
956 printf("max-src-conn %u", r->max_src_conn);
957 opts = 0;
958 }
959 if (r->max_src_conn_rate.limit) {
960 if (!opts)
961 printf(", ");
962 printf("max-src-conn-rate %u/%u",
963 r->max_src_conn_rate.limit,
964 r->max_src_conn_rate.seconds);
965 opts = 0;
966 }
967 if (r->max_src_nodes) {
968 if (!opts)
969 printf(", ");
970 printf("max-src-nodes %u", r->max_src_nodes);
971 opts = 0;
972 }
973 if (r->overload_tblname[0]) {
974 if (!opts)
975 printf(", ");
976 printf("overload <%s>", r->overload_tblname);
977 if (r->flush)
978 printf(" flush");
979 if (r->flush & PF_FLUSH_GLOBAL)
980 printf(" global");
981 }
982 if (r->rule_flag & PFRULE_IFBOUND) {
983 if (!opts)
984 printf(", ");
985 printf("if-bound");
986 opts = 0;
987 }
988 if (r->rule_flag & PFRULE_STATESLOPPY) {
989 if (!opts)
990 printf(", ");
991 printf("sloppy");
992 opts = 0;
993 }
994 for (i = 0; i < PFTM_MAX; ++i)
995 if (r->timeout[i]) {
996 int j;
997
998 if (!opts)
999 printf(", ");
1000 opts = 0;
1001 for (j = 0; pf_timeouts[j].name != NULL;
1002 ++j)
1003 if (pf_timeouts[j].timeout == i)
1004 break;
1005 printf("%s %u", pf_timeouts[j].name == NULL ?
1006 "inv.timeout" : pf_timeouts[j].name,
1007 r->timeout[i]);
1008 }
1009 printf(")");
1010 }
1011 if (r->rule_flag & PFRULE_FRAGMENT)
1012 printf(" fragment");
1013 if (r->rule_flag & PFRULE_NODF)
1014 printf(" no-df");
1015 if (r->rule_flag & PFRULE_RANDOMID)
1016 printf(" random-id");
1017 if (r->min_ttl)
1018 printf(" min-ttl %d", r->min_ttl);
1019 if (r->max_mss)
1020 printf(" max-mss %d", r->max_mss);
1021 if (r->rule_flag & PFRULE_SET_TOS)
1022 printf(" set-tos 0x%2.2x", r->set_tos);
1023 if (r->allow_opts)
1024 printf(" allow-opts");
1025 if (r->action == PF_SCRUB) {
1026 if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
1027 printf(" reassemble tcp");
1028
1029 printf(" fragment reassemble");
1030 }
1031 i = 0;
1032 while (r->label[i][0])
1033 printf(" label \"%s\"", r->label[i++]);
1034 if (r->ridentifier)
1035 printf(" ridentifier %u", r->ridentifier);
1036 if (r->qname[0] && r->pqname[0])
1037 printf(" queue(%s, %s)", r->qname, r->pqname);
1038 else if (r->qname[0])
1039 printf(" queue %s", r->qname);
1040 if (r->tagname[0])
1041 printf(" tag %s", r->tagname);
1042 if (r->match_tagname[0]) {
1043 if (r->match_tag_not)
1044 printf(" !");
1045 printf(" tagged %s", r->match_tagname);
1046 }
1047 if (r->rtableid != -1)
1048 printf(" rtable %u", r->rtableid);
1049 if (r->divert.port) {
1050 #ifdef __FreeBSD__
1051 printf(" divert-to %u", ntohs(r->divert.port));
1052 #else
1053 if (PF_AZERO(&r->divert.addr, r->af)) {
1054 printf(" divert-reply");
1055 } else {
1056 /* XXX cut&paste from print_addr */
1057 char buf[48];
1058
1059 printf(" divert-to ");
1060 if (inet_ntop(r->af, &r->divert.addr, buf,
1061 sizeof(buf)) == NULL)
1062 printf("?");
1063 else
1064 printf("%s", buf);
1065 printf(" port %u", ntohs(r->divert.port));
1066 }
1067 #endif
1068 }
1069 if (!anchor_call[0] && (r->action == PF_NAT ||
1070 r->action == PF_BINAT || r->action == PF_RDR)) {
1071 printf(" -> ");
1072 print_pool(&r->rpool, r->rpool.proxy_port[0],
1073 r->rpool.proxy_port[1], r->af, r->action);
1074 }
1075 }
1076
1077 void
print_tabledef(const char * name,int flags,int addrs,struct node_tinithead * nodes)1078 print_tabledef(const char *name, int flags, int addrs,
1079 struct node_tinithead *nodes)
1080 {
1081 struct node_tinit *ti, *nti;
1082 struct node_host *h;
1083
1084 printf("table <%s>", name);
1085 if (flags & PFR_TFLAG_CONST)
1086 printf(" const");
1087 if (flags & PFR_TFLAG_PERSIST)
1088 printf(" persist");
1089 if (flags & PFR_TFLAG_COUNTERS)
1090 printf(" counters");
1091 SIMPLEQ_FOREACH(ti, nodes, entries) {
1092 if (ti->file) {
1093 printf(" file \"%s\"", ti->file);
1094 continue;
1095 }
1096 printf(" {");
1097 for (;;) {
1098 for (h = ti->host; h != NULL; h = h->next) {
1099 printf(h->not ? " !" : " ");
1100 print_addr(&h->addr, h->af, 0);
1101 }
1102 nti = SIMPLEQ_NEXT(ti, entries);
1103 if (nti != NULL && nti->file == NULL)
1104 ti = nti; /* merge lists */
1105 else
1106 break;
1107 }
1108 printf(" }");
1109 }
1110 if (addrs && SIMPLEQ_EMPTY(nodes))
1111 printf(" { }");
1112 printf("\n");
1113 }
1114
1115 int
parse_flags(char * s)1116 parse_flags(char *s)
1117 {
1118 char *p, *q;
1119 u_int8_t f = 0;
1120
1121 for (p = s; *p; p++) {
1122 if ((q = strchr(tcpflags, *p)) == NULL)
1123 return -1;
1124 else
1125 f |= 1 << (q - tcpflags);
1126 }
1127 return (f ? f : PF_TH_ALL);
1128 }
1129
1130 void
set_ipmask(struct node_host * h,u_int8_t b)1131 set_ipmask(struct node_host *h, u_int8_t b)
1132 {
1133 struct pf_addr *m, *n;
1134 int i, j = 0;
1135
1136 m = &h->addr.v.a.mask;
1137 memset(m, 0, sizeof(*m));
1138
1139 while (b >= 32) {
1140 m->addr32[j++] = 0xffffffff;
1141 b -= 32;
1142 }
1143 for (i = 31; i > 31-b; --i)
1144 m->addr32[j] |= (1 << i);
1145 if (b)
1146 m->addr32[j] = htonl(m->addr32[j]);
1147
1148 /* Mask off bits of the address that will never be used. */
1149 n = &h->addr.v.a.addr;
1150 if (h->addr.type == PF_ADDR_ADDRMASK)
1151 for (i = 0; i < 4; i++)
1152 n->addr32[i] = n->addr32[i] & m->addr32[i];
1153 }
1154
1155 int
check_netmask(struct node_host * h,sa_family_t af)1156 check_netmask(struct node_host *h, sa_family_t af)
1157 {
1158 struct node_host *n = NULL;
1159 struct pf_addr *m;
1160
1161 for (n = h; n != NULL; n = n->next) {
1162 if (h->addr.type == PF_ADDR_TABLE)
1163 continue;
1164 m = &h->addr.v.a.mask;
1165 /* netmasks > 32 bit are invalid on v4 */
1166 if (af == AF_INET &&
1167 (m->addr32[1] || m->addr32[2] || m->addr32[3])) {
1168 fprintf(stderr, "netmask %u invalid for IPv4 address\n",
1169 unmask(m, AF_INET6));
1170 return (1);
1171 }
1172 }
1173 return (0);
1174 }
1175
1176 struct node_host *
gen_dynnode(struct node_host * h,sa_family_t af)1177 gen_dynnode(struct node_host *h, sa_family_t af)
1178 {
1179 struct node_host *n;
1180 struct pf_addr *m;
1181
1182 if (h->addr.type != PF_ADDR_DYNIFTL)
1183 return (NULL);
1184
1185 if ((n = calloc(1, sizeof(*n))) == NULL)
1186 return (NULL);
1187 bcopy(h, n, sizeof(*n));
1188 n->ifname = NULL;
1189 n->next = NULL;
1190 n->tail = NULL;
1191
1192 /* fix up netmask */
1193 m = &n->addr.v.a.mask;
1194 if (af == AF_INET && unmask(m, AF_INET6) > 32)
1195 set_ipmask(n, 32);
1196
1197 return (n);
1198 }
1199
1200 /* interface lookup routines */
1201
1202 static struct node_host *iftab;
1203
1204 /*
1205 * Retrieve the list of groups this interface is a member of and make sure
1206 * each group is in the group map.
1207 */
1208 static void
ifa_add_groups_to_map(char * ifa_name)1209 ifa_add_groups_to_map(char *ifa_name)
1210 {
1211 int s, len;
1212 struct ifgroupreq ifgr;
1213 struct ifg_req *ifg;
1214
1215 s = get_query_socket();
1216
1217 /* Get size of group list for this interface */
1218 memset(&ifgr, 0, sizeof(ifgr));
1219 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ);
1220 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1221 err(1, "SIOCGIFGROUP");
1222
1223 /* Retrieve group list for this interface */
1224 len = ifgr.ifgr_len;
1225 ifgr.ifgr_groups =
1226 (struct ifg_req *)calloc(len / sizeof(struct ifg_req),
1227 sizeof(struct ifg_req));
1228 if (ifgr.ifgr_groups == NULL)
1229 err(1, "calloc");
1230 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1231 err(1, "SIOCGIFGROUP");
1232
1233 ifg = ifgr.ifgr_groups;
1234 for (; ifg && len >= sizeof(struct ifg_req); ifg++) {
1235 len -= sizeof(struct ifg_req);
1236 if (strcmp(ifg->ifgrq_group, "all")) {
1237 ENTRY item;
1238 ENTRY *ret_item;
1239 int *answer;
1240
1241 item.key = ifg->ifgrq_group;
1242 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) {
1243 struct ifgroupreq ifgr2;
1244
1245 /* Don't know the answer yet */
1246 if ((answer = malloc(sizeof(int))) == NULL)
1247 err(1, "malloc");
1248
1249 bzero(&ifgr2, sizeof(ifgr2));
1250 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group,
1251 sizeof(ifgr2.ifgr_name));
1252 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0)
1253 *answer = ifgr2.ifgr_len;
1254 else
1255 *answer = 0;
1256
1257 item.key = strdup(ifg->ifgrq_group);
1258 item.data = answer;
1259 if (hsearch_r(item, ENTER, &ret_item,
1260 &isgroup_map) == 0)
1261 err(1, "interface group query response"
1262 " map insert");
1263 }
1264 }
1265 }
1266 free(ifgr.ifgr_groups);
1267 }
1268
1269 void
ifa_load(void)1270 ifa_load(void)
1271 {
1272 struct ifaddrs *ifap, *ifa;
1273 struct node_host *n = NULL, *h = NULL;
1274
1275 if (getifaddrs(&ifap) < 0)
1276 err(1, "getifaddrs");
1277
1278 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1279 if (!(ifa->ifa_addr->sa_family == AF_INET ||
1280 ifa->ifa_addr->sa_family == AF_INET6 ||
1281 ifa->ifa_addr->sa_family == AF_LINK))
1282 continue;
1283 n = calloc(1, sizeof(struct node_host));
1284 if (n == NULL)
1285 err(1, "address: calloc");
1286 n->af = ifa->ifa_addr->sa_family;
1287 n->ifa_flags = ifa->ifa_flags;
1288 #ifdef __KAME__
1289 if (n->af == AF_INET6 &&
1290 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
1291 ifa->ifa_addr)->sin6_addr) &&
1292 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
1293 0) {
1294 struct sockaddr_in6 *sin6;
1295
1296 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1297 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
1298 sin6->sin6_addr.s6_addr[3];
1299 sin6->sin6_addr.s6_addr[2] = 0;
1300 sin6->sin6_addr.s6_addr[3] = 0;
1301 }
1302 #endif
1303 n->ifindex = 0;
1304 if (n->af == AF_INET) {
1305 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *)
1306 ifa->ifa_addr)->sin_addr.s_addr,
1307 sizeof(struct in_addr));
1308 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *)
1309 ifa->ifa_netmask)->sin_addr.s_addr,
1310 sizeof(struct in_addr));
1311 if (ifa->ifa_broadaddr != NULL)
1312 memcpy(&n->bcast, &((struct sockaddr_in *)
1313 ifa->ifa_broadaddr)->sin_addr.s_addr,
1314 sizeof(struct in_addr));
1315 if (ifa->ifa_dstaddr != NULL)
1316 memcpy(&n->peer, &((struct sockaddr_in *)
1317 ifa->ifa_dstaddr)->sin_addr.s_addr,
1318 sizeof(struct in_addr));
1319 } else if (n->af == AF_INET6) {
1320 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *)
1321 ifa->ifa_addr)->sin6_addr.s6_addr,
1322 sizeof(struct in6_addr));
1323 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *)
1324 ifa->ifa_netmask)->sin6_addr.s6_addr,
1325 sizeof(struct in6_addr));
1326 if (ifa->ifa_broadaddr != NULL)
1327 memcpy(&n->bcast, &((struct sockaddr_in6 *)
1328 ifa->ifa_broadaddr)->sin6_addr.s6_addr,
1329 sizeof(struct in6_addr));
1330 if (ifa->ifa_dstaddr != NULL)
1331 memcpy(&n->peer, &((struct sockaddr_in6 *)
1332 ifa->ifa_dstaddr)->sin6_addr.s6_addr,
1333 sizeof(struct in6_addr));
1334 n->ifindex = ((struct sockaddr_in6 *)
1335 ifa->ifa_addr)->sin6_scope_id;
1336 } else if (n->af == AF_LINK) {
1337 ifa_add_groups_to_map(ifa->ifa_name);
1338 }
1339 if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
1340 err(1, "ifa_load: strdup");
1341 n->next = NULL;
1342 n->tail = n;
1343 if (h == NULL)
1344 h = n;
1345 else {
1346 h->tail->next = n;
1347 h->tail = n;
1348 }
1349 }
1350
1351 iftab = h;
1352 freeifaddrs(ifap);
1353 }
1354
1355 static int
get_socket_domain(void)1356 get_socket_domain(void)
1357 {
1358 int sdom;
1359
1360 sdom = AF_UNSPEC;
1361 #ifdef WITH_INET6
1362 if (sdom == AF_UNSPEC && feature_present("inet6"))
1363 sdom = AF_INET6;
1364 #endif
1365 #ifdef WITH_INET
1366 if (sdom == AF_UNSPEC && feature_present("inet"))
1367 sdom = AF_INET;
1368 #endif
1369 if (sdom == AF_UNSPEC)
1370 sdom = AF_LINK;
1371
1372 return (sdom);
1373 }
1374
1375 int
get_query_socket(void)1376 get_query_socket(void)
1377 {
1378 static int s = -1;
1379
1380 if (s == -1) {
1381 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1)
1382 err(1, "socket");
1383 }
1384
1385 return (s);
1386 }
1387
1388 /*
1389 * Returns the response len if the name is a group, otherwise returns 0.
1390 */
1391 static int
is_a_group(char * name)1392 is_a_group(char *name)
1393 {
1394 ENTRY item;
1395 ENTRY *ret_item;
1396
1397 item.key = name;
1398 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0)
1399 return (0);
1400
1401 return (*(int *)ret_item->data);
1402 }
1403
1404 struct node_host *
ifa_exists(char * ifa_name)1405 ifa_exists(char *ifa_name)
1406 {
1407 struct node_host *n;
1408
1409 if (iftab == NULL)
1410 ifa_load();
1411
1412 /* check whether this is a group */
1413 if (is_a_group(ifa_name)) {
1414 /* fake a node_host */
1415 if ((n = calloc(1, sizeof(*n))) == NULL)
1416 err(1, "calloc");
1417 if ((n->ifname = strdup(ifa_name)) == NULL)
1418 err(1, "strdup");
1419 return (n);
1420 }
1421
1422 for (n = iftab; n; n = n->next) {
1423 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
1424 return (n);
1425 }
1426
1427 return (NULL);
1428 }
1429
1430 struct node_host *
ifa_grouplookup(char * ifa_name,int flags)1431 ifa_grouplookup(char *ifa_name, int flags)
1432 {
1433 struct ifg_req *ifg;
1434 struct ifgroupreq ifgr;
1435 int s, len;
1436 struct node_host *n, *h = NULL;
1437
1438 s = get_query_socket();
1439 len = is_a_group(ifa_name);
1440 if (len == 0)
1441 return (NULL);
1442 bzero(&ifgr, sizeof(ifgr));
1443 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
1444 ifgr.ifgr_len = len;
1445 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
1446 err(1, "calloc");
1447 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
1448 err(1, "SIOCGIFGMEMB");
1449
1450 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req);
1451 ifg++) {
1452 len -= sizeof(struct ifg_req);
1453 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL)
1454 continue;
1455 if (h == NULL)
1456 h = n;
1457 else {
1458 h->tail->next = n;
1459 h->tail = n->tail;
1460 }
1461 }
1462 free(ifgr.ifgr_groups);
1463
1464 return (h);
1465 }
1466
1467 struct node_host *
ifa_lookup(char * ifa_name,int flags)1468 ifa_lookup(char *ifa_name, int flags)
1469 {
1470 struct node_host *p = NULL, *h = NULL, *n = NULL;
1471 int got4 = 0, got6 = 0;
1472 const char *last_if = NULL;
1473
1474 /* first load iftab and isgroup_map */
1475 if (iftab == NULL)
1476 ifa_load();
1477
1478 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL)
1479 return (h);
1480
1481 if (!strncmp(ifa_name, "self", IFNAMSIZ))
1482 ifa_name = NULL;
1483
1484 for (p = iftab; p; p = p->next) {
1485 if (ifa_skip_if(ifa_name, p))
1486 continue;
1487 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
1488 continue;
1489 if ((flags & PFI_AFLAG_BROADCAST) &&
1490 !(p->ifa_flags & IFF_BROADCAST))
1491 continue;
1492 if ((flags & PFI_AFLAG_PEER) &&
1493 !(p->ifa_flags & IFF_POINTOPOINT))
1494 continue;
1495 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
1496 continue;
1497 if (last_if == NULL || strcmp(last_if, p->ifname))
1498 got4 = got6 = 0;
1499 last_if = p->ifname;
1500 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
1501 continue;
1502 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 &&
1503 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6))
1504 continue;
1505 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
1506 continue;
1507 if (p->af == AF_INET)
1508 got4 = 1;
1509 else
1510 got6 = 1;
1511 n = calloc(1, sizeof(struct node_host));
1512 if (n == NULL)
1513 err(1, "address: calloc");
1514 n->af = p->af;
1515 if (flags & PFI_AFLAG_BROADCAST)
1516 memcpy(&n->addr.v.a.addr, &p->bcast,
1517 sizeof(struct pf_addr));
1518 else if (flags & PFI_AFLAG_PEER)
1519 memcpy(&n->addr.v.a.addr, &p->peer,
1520 sizeof(struct pf_addr));
1521 else
1522 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
1523 sizeof(struct pf_addr));
1524 if (flags & PFI_AFLAG_NETWORK)
1525 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af));
1526 else {
1527 if (n->af == AF_INET) {
1528 if (p->ifa_flags & IFF_LOOPBACK &&
1529 p->ifa_flags & IFF_LINK1)
1530 memcpy(&n->addr.v.a.mask,
1531 &p->addr.v.a.mask,
1532 sizeof(struct pf_addr));
1533 else
1534 set_ipmask(n, 32);
1535 } else
1536 set_ipmask(n, 128);
1537 }
1538 n->ifindex = p->ifindex;
1539 n->ifname = strdup(p->ifname);
1540
1541 n->next = NULL;
1542 n->tail = n;
1543 if (h == NULL)
1544 h = n;
1545 else {
1546 h->tail->next = n;
1547 h->tail = n;
1548 }
1549 }
1550 return (h);
1551 }
1552
1553 int
ifa_skip_if(const char * filter,struct node_host * p)1554 ifa_skip_if(const char *filter, struct node_host *p)
1555 {
1556 int n;
1557
1558 if (p->af != AF_INET && p->af != AF_INET6)
1559 return (1);
1560 if (filter == NULL || !*filter)
1561 return (0);
1562 if (!strcmp(p->ifname, filter))
1563 return (0); /* exact match */
1564 n = strlen(filter);
1565 if (n < 1 || n >= IFNAMSIZ)
1566 return (1); /* sanity check */
1567 if (filter[n-1] >= '0' && filter[n-1] <= '9')
1568 return (1); /* only do exact match in that case */
1569 if (strncmp(p->ifname, filter, n))
1570 return (1); /* prefix doesn't match */
1571 return (p->ifname[n] < '0' || p->ifname[n] > '9');
1572 }
1573
1574
1575 struct node_host *
host(const char * s)1576 host(const char *s)
1577 {
1578 struct node_host *h = NULL;
1579 int mask, v4mask, v6mask, cont = 1;
1580 char *p, *q, *ps;
1581
1582 if ((p = strrchr(s, '/')) != NULL) {
1583 mask = strtol(p+1, &q, 0);
1584 if (!q || *q || mask > 128 || q == (p+1)) {
1585 fprintf(stderr, "invalid netmask '%s'\n", p);
1586 return (NULL);
1587 }
1588 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
1589 err(1, "host: malloc");
1590 strlcpy(ps, s, strlen(s) - strlen(p) + 1);
1591 v4mask = v6mask = mask;
1592 } else {
1593 if ((ps = strdup(s)) == NULL)
1594 err(1, "host: strdup");
1595 v4mask = 32;
1596 v6mask = 128;
1597 mask = -1;
1598 }
1599
1600 /* IPv4 address? */
1601 if (cont && (h = host_v4(s, mask)) != NULL)
1602 cont = 0;
1603
1604 /* IPv6 address? */
1605 if (cont && (h = host_v6(ps, v6mask)) != NULL)
1606 cont = 0;
1607
1608 /* interface with this name exists? */
1609 /* expensive with thousands of interfaces - prioritze IPv4/6 check */
1610 if (cont && (h = host_if(ps, mask, &cont)) != NULL)
1611 cont = 0;
1612
1613 /* dns lookup */
1614 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL)
1615 cont = 0;
1616 free(ps);
1617
1618 if (h == NULL || cont == 1) {
1619 fprintf(stderr, "no IP address found for %s\n", s);
1620 return (NULL);
1621 }
1622 return (h);
1623 }
1624
1625 struct node_host *
host_if(const char * s,int mask,int * cont)1626 host_if(const char *s, int mask, int *cont)
1627 {
1628 struct node_host *n, *h = NULL;
1629 char *p, *ps;
1630 int flags = 0;
1631
1632 if ((ps = strdup(s)) == NULL)
1633 err(1, "host_if: strdup");
1634 while ((p = strrchr(ps, ':')) != NULL) {
1635 if (!strcmp(p+1, "network"))
1636 flags |= PFI_AFLAG_NETWORK;
1637 else if (!strcmp(p+1, "broadcast"))
1638 flags |= PFI_AFLAG_BROADCAST;
1639 else if (!strcmp(p+1, "peer"))
1640 flags |= PFI_AFLAG_PEER;
1641 else if (!strcmp(p+1, "0"))
1642 flags |= PFI_AFLAG_NOALIAS;
1643 else {
1644 free(ps);
1645 return (NULL);
1646 }
1647 *p = '\0';
1648 *cont = 0;
1649 }
1650 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
1651 fprintf(stderr, "illegal combination of interface modifiers\n");
1652 free(ps);
1653 return (NULL);
1654 }
1655 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
1656 fprintf(stderr, "network or broadcast lookup, but "
1657 "extra netmask given\n");
1658 free(ps);
1659 return (NULL);
1660 }
1661 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) {
1662 /* interface with this name exists */
1663 h = ifa_lookup(ps, flags);
1664 for (n = h; n != NULL && mask > -1; n = n->next)
1665 set_ipmask(n, mask);
1666 }
1667
1668 free(ps);
1669 return (h);
1670 }
1671
1672 struct node_host *
host_v4(const char * s,int mask)1673 host_v4(const char *s, int mask)
1674 {
1675 struct node_host *h = NULL;
1676 struct in_addr ina;
1677 int bits = 32;
1678
1679 memset(&ina, 0, sizeof(struct in_addr));
1680 if (strrchr(s, '/') != NULL) {
1681 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1)
1682 return (NULL);
1683 } else {
1684 if (inet_pton(AF_INET, s, &ina) != 1)
1685 return (NULL);
1686 }
1687
1688 h = calloc(1, sizeof(struct node_host));
1689 if (h == NULL)
1690 err(1, "address: calloc");
1691 h->ifname = NULL;
1692 h->af = AF_INET;
1693 h->addr.v.a.addr.addr32[0] = ina.s_addr;
1694 set_ipmask(h, bits);
1695 h->next = NULL;
1696 h->tail = h;
1697
1698 return (h);
1699 }
1700
1701 struct node_host *
host_v6(const char * s,int mask)1702 host_v6(const char *s, int mask)
1703 {
1704 struct addrinfo hints, *res;
1705 struct node_host *h = NULL;
1706
1707 memset(&hints, 0, sizeof(hints));
1708 hints.ai_family = AF_INET6;
1709 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1710 hints.ai_flags = AI_NUMERICHOST;
1711 if (getaddrinfo(s, "0", &hints, &res) == 0) {
1712 h = calloc(1, sizeof(struct node_host));
1713 if (h == NULL)
1714 err(1, "address: calloc");
1715 h->ifname = NULL;
1716 h->af = AF_INET6;
1717 memcpy(&h->addr.v.a.addr,
1718 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
1719 sizeof(h->addr.v.a.addr));
1720 h->ifindex =
1721 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1722 set_ipmask(h, mask);
1723 freeaddrinfo(res);
1724 h->next = NULL;
1725 h->tail = h;
1726 }
1727
1728 return (h);
1729 }
1730
1731 struct node_host *
host_dns(const char * s,int v4mask,int v6mask)1732 host_dns(const char *s, int v4mask, int v6mask)
1733 {
1734 struct addrinfo hints, *res0, *res;
1735 struct node_host *n, *h = NULL;
1736 int error, noalias = 0;
1737 int got4 = 0, got6 = 0;
1738 char *p, *ps;
1739
1740 if ((ps = strdup(s)) == NULL)
1741 err(1, "host_dns: strdup");
1742 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
1743 noalias = 1;
1744 *p = '\0';
1745 }
1746 memset(&hints, 0, sizeof(hints));
1747 hints.ai_family = PF_UNSPEC;
1748 hints.ai_socktype = SOCK_STREAM; /* DUMMY */
1749 error = getaddrinfo(ps, NULL, &hints, &res0);
1750 if (error) {
1751 free(ps);
1752 return (h);
1753 }
1754
1755 for (res = res0; res; res = res->ai_next) {
1756 if (res->ai_family != AF_INET &&
1757 res->ai_family != AF_INET6)
1758 continue;
1759 if (noalias) {
1760 if (res->ai_family == AF_INET) {
1761 if (got4)
1762 continue;
1763 got4 = 1;
1764 } else {
1765 if (got6)
1766 continue;
1767 got6 = 1;
1768 }
1769 }
1770 n = calloc(1, sizeof(struct node_host));
1771 if (n == NULL)
1772 err(1, "host_dns: calloc");
1773 n->ifname = NULL;
1774 n->af = res->ai_family;
1775 if (res->ai_family == AF_INET) {
1776 memcpy(&n->addr.v.a.addr,
1777 &((struct sockaddr_in *)
1778 res->ai_addr)->sin_addr.s_addr,
1779 sizeof(struct in_addr));
1780 set_ipmask(n, v4mask);
1781 } else {
1782 memcpy(&n->addr.v.a.addr,
1783 &((struct sockaddr_in6 *)
1784 res->ai_addr)->sin6_addr.s6_addr,
1785 sizeof(struct in6_addr));
1786 n->ifindex =
1787 ((struct sockaddr_in6 *)
1788 res->ai_addr)->sin6_scope_id;
1789 set_ipmask(n, v6mask);
1790 }
1791 n->next = NULL;
1792 n->tail = n;
1793 if (h == NULL)
1794 h = n;
1795 else {
1796 h->tail->next = n;
1797 h->tail = n;
1798 }
1799 }
1800 freeaddrinfo(res0);
1801 free(ps);
1802
1803 return (h);
1804 }
1805
1806 /*
1807 * convert a hostname to a list of addresses and put them in the given buffer.
1808 * test:
1809 * if set to 1, only simple addresses are accepted (no netblock, no "!").
1810 */
1811 int
append_addr(struct pfr_buffer * b,char * s,int test)1812 append_addr(struct pfr_buffer *b, char *s, int test)
1813 {
1814 char *r;
1815 struct node_host *h, *n;
1816 int rv, not = 0;
1817
1818 for (r = s; *r == '!'; r++)
1819 not = !not;
1820 if ((n = host(r)) == NULL) {
1821 errno = 0;
1822 return (-1);
1823 }
1824 rv = append_addr_host(b, n, test, not);
1825 do {
1826 h = n;
1827 n = n->next;
1828 free(h);
1829 } while (n != NULL);
1830 return (rv);
1831 }
1832
1833 /*
1834 * same as previous function, but with a pre-parsed input and the ability
1835 * to "negate" the result. Does not free the node_host list.
1836 * not:
1837 * setting it to 1 is equivalent to adding "!" in front of parameter s.
1838 */
1839 int
append_addr_host(struct pfr_buffer * b,struct node_host * n,int test,int not)1840 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
1841 {
1842 int bits;
1843 struct pfr_addr addr;
1844
1845 do {
1846 bzero(&addr, sizeof(addr));
1847 addr.pfra_not = n->not ^ not;
1848 addr.pfra_af = n->af;
1849 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af);
1850 switch (n->af) {
1851 case AF_INET:
1852 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
1853 bits = 32;
1854 break;
1855 case AF_INET6:
1856 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
1857 sizeof(struct in6_addr));
1858 bits = 128;
1859 break;
1860 default:
1861 errno = EINVAL;
1862 return (-1);
1863 }
1864 if ((test && (not || addr.pfra_net != bits)) ||
1865 addr.pfra_net > bits) {
1866 errno = EINVAL;
1867 return (-1);
1868 }
1869 if (pfr_buf_add(b, &addr))
1870 return (-1);
1871 } while ((n = n->next) != NULL);
1872
1873 return (0);
1874 }
1875
1876 int
pfctl_add_trans(struct pfr_buffer * buf,int rs_num,const char * anchor)1877 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor)
1878 {
1879 struct pfioc_trans_e trans;
1880
1881 bzero(&trans, sizeof(trans));
1882 trans.rs_num = rs_num;
1883 if (strlcpy(trans.anchor, anchor,
1884 sizeof(trans.anchor)) >= sizeof(trans.anchor))
1885 errx(1, "pfctl_add_trans: strlcpy");
1886
1887 return pfr_buf_add(buf, &trans);
1888 }
1889
1890 u_int32_t
pfctl_get_ticket(struct pfr_buffer * buf,int rs_num,const char * anchor)1891 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor)
1892 {
1893 struct pfioc_trans_e *p;
1894
1895 PFRB_FOREACH(p, buf)
1896 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor))
1897 return (p->ticket);
1898 errx(1, "pfctl_get_ticket: assertion failed");
1899 }
1900
1901 int
pfctl_trans(int dev,struct pfr_buffer * buf,u_long cmd,int from)1902 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
1903 {
1904 struct pfioc_trans trans;
1905
1906 bzero(&trans, sizeof(trans));
1907 trans.size = buf->pfrb_size - from;
1908 trans.esize = sizeof(struct pfioc_trans_e);
1909 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
1910 return ioctl(dev, cmd, &trans);
1911 }
1912