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/types.h>
37 #include <sys/ioctl.h>
38 #include <sys/socket.h>
39 #include <sys/param.h>
40 #include <sys/proc.h>
41 #include <net/if_dl.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 <netinet/tcp.h>
49 #include <net/pfvar.h>
50 #include <arpa/inet.h>
51
52 #include <assert.h>
53 #include <search.h>
54 #include <stdio.h>
55 #include <stdlib.h>
56 #include <string.h>
57 #include <ctype.h>
58 #include <netdb.h>
59 #include <stdarg.h>
60 #include <errno.h>
61 #include <err.h>
62 #include <ifaddrs.h>
63 #include <inttypes.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 (uint16_t);
73 void print_fromto(struct pf_rule_addr *, pf_osfp_t,
74 struct pf_rule_addr *, sa_family_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, 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 = "FSRPAUEWe";
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 { "sctp.first", PFTM_SCTP_FIRST_PACKET },
198 { "sctp.opening", PFTM_SCTP_OPENING },
199 { "sctp.established", PFTM_SCTP_ESTABLISHED },
200 { "sctp.closing", PFTM_SCTP_CLOSING },
201 { "sctp.closed", PFTM_SCTP_CLOSED },
202 { "udp.first", PFTM_UDP_FIRST_PACKET },
203 { "udp.single", PFTM_UDP_SINGLE },
204 { "udp.multiple", PFTM_UDP_MULTIPLE },
205 { "icmp.first", PFTM_ICMP_FIRST_PACKET },
206 { "icmp.error", PFTM_ICMP_ERROR_REPLY },
207 { "other.first", PFTM_OTHER_FIRST_PACKET },
208 { "other.single", PFTM_OTHER_SINGLE },
209 { "other.multiple", PFTM_OTHER_MULTIPLE },
210 { "frag", PFTM_FRAG },
211 { "interval", PFTM_INTERVAL },
212 { "adaptive.start", PFTM_ADAPTIVE_START },
213 { "adaptive.end", PFTM_ADAPTIVE_END },
214 { "src.track", PFTM_SRC_NODE },
215 { NULL, 0 }
216 };
217
218 static struct hsearch_data isgroup_map;
219
220 static __attribute__((constructor)) void
pfctl_parser_init(void)221 pfctl_parser_init(void)
222 {
223 /*
224 * As hdestroy() will never be called on these tables, it will be
225 * safe to use references into the stored data as keys.
226 */
227 if (hcreate_r(0, &isgroup_map) == 0)
228 err(1, "Failed to create interface group query response map");
229 }
230
231 const struct icmptypeent *
geticmptypebynumber(u_int8_t type,sa_family_t af)232 geticmptypebynumber(u_int8_t type, sa_family_t af)
233 {
234 unsigned int i;
235
236 if (af != AF_INET6) {
237 for (i=0; i < nitems(icmp_type); i++) {
238 if (type == icmp_type[i].type)
239 return (&icmp_type[i]);
240 }
241 } else {
242 for (i=0; i < nitems(icmp6_type); i++) {
243 if (type == icmp6_type[i].type)
244 return (&icmp6_type[i]);
245 }
246 }
247 return (NULL);
248 }
249
250 const struct icmptypeent *
geticmptypebyname(char * w,sa_family_t af)251 geticmptypebyname(char *w, sa_family_t af)
252 {
253 unsigned int i;
254
255 if (af != AF_INET6) {
256 for (i=0; i < nitems(icmp_type); i++) {
257 if (!strcmp(w, icmp_type[i].name))
258 return (&icmp_type[i]);
259 }
260 } else {
261 for (i=0; i < nitems(icmp6_type); i++) {
262 if (!strcmp(w, icmp6_type[i].name))
263 return (&icmp6_type[i]);
264 }
265 }
266 return (NULL);
267 }
268
269 const struct icmpcodeent *
geticmpcodebynumber(u_int8_t type,u_int8_t code,sa_family_t af)270 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af)
271 {
272 unsigned int i;
273
274 if (af != AF_INET6) {
275 for (i=0; i < nitems(icmp_code); i++) {
276 if (type == icmp_code[i].type &&
277 code == icmp_code[i].code)
278 return (&icmp_code[i]);
279 }
280 } else {
281 for (i=0; i < nitems(icmp6_code); i++) {
282 if (type == icmp6_code[i].type &&
283 code == icmp6_code[i].code)
284 return (&icmp6_code[i]);
285 }
286 }
287 return (NULL);
288 }
289
290 const struct icmpcodeent *
geticmpcodebyname(u_long type,char * w,sa_family_t af)291 geticmpcodebyname(u_long type, char *w, sa_family_t af)
292 {
293 unsigned int i;
294
295 if (af != AF_INET6) {
296 for (i=0; i < nitems(icmp_code); i++) {
297 if (type == icmp_code[i].type &&
298 !strcmp(w, icmp_code[i].name))
299 return (&icmp_code[i]);
300 }
301 } else {
302 for (i=0; i < nitems(icmp6_code); i++) {
303 if (type == icmp6_code[i].type &&
304 !strcmp(w, icmp6_code[i].name))
305 return (&icmp6_code[i]);
306 }
307 }
308 return (NULL);
309 }
310
311 void
print_op(u_int8_t op,const char * a1,const char * a2)312 print_op(u_int8_t op, const char *a1, const char *a2)
313 {
314 if (op == PF_OP_IRG)
315 printf(" %s >< %s", a1, a2);
316 else if (op == PF_OP_XRG)
317 printf(" %s <> %s", a1, a2);
318 else if (op == PF_OP_EQ)
319 printf(" = %s", a1);
320 else if (op == PF_OP_NE)
321 printf(" != %s", a1);
322 else if (op == PF_OP_LT)
323 printf(" < %s", a1);
324 else if (op == PF_OP_LE)
325 printf(" <= %s", a1);
326 else if (op == PF_OP_GT)
327 printf(" > %s", a1);
328 else if (op == PF_OP_GE)
329 printf(" >= %s", a1);
330 else if (op == PF_OP_RRG)
331 printf(" %s:%s", a1, a2);
332 }
333
334 void
print_port(u_int8_t op,u_int16_t p1,u_int16_t p2,const char * proto,int numeric)335 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric)
336 {
337 char a1[6], a2[6];
338 struct servent *s;
339
340 if (!numeric)
341 s = getservbyport(p1, proto);
342 else
343 s = NULL;
344 p1 = ntohs(p1);
345 p2 = ntohs(p2);
346 snprintf(a1, sizeof(a1), "%u", p1);
347 snprintf(a2, sizeof(a2), "%u", p2);
348 printf(" port");
349 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE))
350 print_op(op, s->s_name, a2);
351 else
352 print_op(op, a1, a2);
353 }
354
355 void
print_ugid(u_int8_t op,unsigned u1,unsigned u2,const char * t,unsigned umax)356 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax)
357 {
358 char a1[11], a2[11];
359
360 snprintf(a1, sizeof(a1), "%u", u1);
361 snprintf(a2, sizeof(a2), "%u", u2);
362 printf(" %s", t);
363 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE))
364 print_op(op, "unknown", a2);
365 else
366 print_op(op, a1, a2);
367 }
368
369 void
print_flags(uint16_t f)370 print_flags(uint16_t f)
371 {
372 int i;
373
374 for (i = 0; tcpflags[i]; ++i)
375 if (f & (1 << i))
376 printf("%c", tcpflags[i]);
377 }
378
379 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)380 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst,
381 sa_family_t af, u_int8_t proto, int verbose, int numeric)
382 {
383 char buf[PF_OSFP_LEN*3];
384 if (src->addr.type == PF_ADDR_ADDRMASK &&
385 dst->addr.type == PF_ADDR_ADDRMASK &&
386 PF_AZERO(&src->addr.v.a.addr, AF_INET6) &&
387 PF_AZERO(&src->addr.v.a.mask, AF_INET6) &&
388 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) &&
389 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) &&
390 !src->neg && !dst->neg &&
391 !src->port_op && !dst->port_op &&
392 osfp == PF_OSFP_ANY)
393 printf(" all");
394 else {
395 printf(" from ");
396 if (src->neg)
397 printf("! ");
398 print_addr(&src->addr, af, verbose);
399 if (src->port_op)
400 print_port(src->port_op, src->port[0],
401 src->port[1],
402 proto == IPPROTO_TCP ? "tcp" : "udp",
403 numeric);
404 if (osfp != PF_OSFP_ANY)
405 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf,
406 sizeof(buf)));
407
408 printf(" to ");
409 if (dst->neg)
410 printf("! ");
411 print_addr(&dst->addr, af, verbose);
412 if (dst->port_op)
413 print_port(dst->port_op, dst->port[0],
414 dst->port[1],
415 proto == IPPROTO_TCP ? "tcp" : "udp",
416 numeric);
417 }
418 }
419
420 void
print_pool(struct pfctl_pool * pool,u_int16_t p1,u_int16_t p2,sa_family_t af,int id)421 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2,
422 sa_family_t af, int id)
423 {
424 struct pf_pooladdr *pooladdr;
425
426 if ((TAILQ_FIRST(&pool->list) != NULL) &&
427 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
428 printf("{ ");
429 TAILQ_FOREACH(pooladdr, &pool->list, entries){
430 switch (id) {
431 case PF_NAT:
432 case PF_RDR:
433 case PF_BINAT:
434 print_addr(&pooladdr->addr, af, 0);
435 break;
436 case PF_PASS:
437 case PF_MATCH:
438 if (PF_AZERO(&pooladdr->addr.v.a.addr, af))
439 printf("%s", pooladdr->ifname);
440 else {
441 printf("(%s ", pooladdr->ifname);
442 print_addr(&pooladdr->addr, af, 0);
443 printf(")");
444 }
445 break;
446 default:
447 break;
448 }
449 if (TAILQ_NEXT(pooladdr, entries) != NULL)
450 printf(", ");
451 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
452 printf(" }");
453 }
454 switch (id) {
455 case PF_NAT:
456 if ((p1 != PF_NAT_PROXY_PORT_LOW ||
457 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) {
458 if (p1 == p2)
459 printf(" port %u", p1);
460 else
461 printf(" port %u:%u", p1, p2);
462 }
463 break;
464 case PF_RDR:
465 if (p1) {
466 printf(" port %u", p1);
467 if (p2 && (p2 != p1))
468 printf(":%u", p2);
469 }
470 break;
471 default:
472 break;
473 }
474 switch (pool->opts & PF_POOL_TYPEMASK) {
475 case PF_POOL_NONE:
476 break;
477 case PF_POOL_BITMASK:
478 printf(" bitmask");
479 break;
480 case PF_POOL_RANDOM:
481 printf(" random");
482 break;
483 case PF_POOL_SRCHASH:
484 printf(" source-hash 0x%08x%08x%08x%08x",
485 pool->key.key32[0], pool->key.key32[1],
486 pool->key.key32[2], pool->key.key32[3]);
487 break;
488 case PF_POOL_ROUNDROBIN:
489 printf(" round-robin");
490 break;
491 }
492 if (pool->opts & PF_POOL_STICKYADDR)
493 printf(" sticky-address");
494 if (pool->opts & PF_POOL_ENDPI)
495 printf(" endpoint-independent");
496 if (id == PF_NAT && p1 == 0 && p2 == 0)
497 printf(" static-port");
498 if (pool->mape.offset > 0)
499 printf(" map-e-portset %u/%u/%u",
500 pool->mape.offset, pool->mape.psidlen, pool->mape.psid);
501 }
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;
518 time_t day = runtime;
519
520 sec = day % 60;
521 day /= 60;
522 min = day % 60;
523 day /= 60;
524 hrs = day % 24;
525 day /= 24;
526 snprintf(statline, sizeof(statline),
527 "Status: %s for %lld days %.2u:%.2u:%.2u",
528 running, (long long)day, hrs, min, sec);
529 } else
530 snprintf(statline, sizeof(statline), "Status: %s", running);
531 printf("%-44s", statline);
532 switch (s->debug) {
533 case PF_DEBUG_NONE:
534 printf("%15s\n\n", "Debug: None");
535 break;
536 case PF_DEBUG_URGENT:
537 printf("%15s\n\n", "Debug: Urgent");
538 break;
539 case PF_DEBUG_MISC:
540 printf("%15s\n\n", "Debug: Misc");
541 break;
542 case PF_DEBUG_NOISY:
543 printf("%15s\n\n", "Debug: Loud");
544 break;
545 }
546
547 if (opts & PF_OPT_VERBOSE) {
548 printf("Hostid: 0x%08x\n", s->hostid);
549
550 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) {
551 buf[i + i] = hex[s->pf_chksum[i] >> 4];
552 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f];
553 }
554 buf[i + i] = '\0';
555 printf("Checksum: 0x%s\n\n", buf);
556 }
557
558 if (s->ifname[0] != 0) {
559 printf("Interface Stats for %-16s %5s %16s\n",
560 s->ifname, "IPv4", "IPv6");
561 printf(" %-25s %14llu %16llu\n", "Bytes In",
562 (unsigned long long)s->bcounters[0][0],
563 (unsigned long long)s->bcounters[1][0]);
564 printf(" %-25s %14llu %16llu\n", "Bytes Out",
565 (unsigned long long)s->bcounters[0][1],
566 (unsigned long long)s->bcounters[1][1]);
567 printf(" Packets In\n");
568 printf(" %-23s %14llu %16llu\n", "Passed",
569 (unsigned long long)s->pcounters[0][0][PF_PASS],
570 (unsigned long long)s->pcounters[1][0][PF_PASS]);
571 printf(" %-23s %14llu %16llu\n", "Blocked",
572 (unsigned long long)s->pcounters[0][0][PF_DROP],
573 (unsigned long long)s->pcounters[1][0][PF_DROP]);
574 printf(" Packets Out\n");
575 printf(" %-23s %14llu %16llu\n", "Passed",
576 (unsigned long long)s->pcounters[0][1][PF_PASS],
577 (unsigned long long)s->pcounters[1][1][PF_PASS]);
578 printf(" %-23s %14llu %16llu\n\n", "Blocked",
579 (unsigned long long)s->pcounters[0][1][PF_DROP],
580 (unsigned long long)s->pcounters[1][1][PF_DROP]);
581 }
582 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
583 printf(" %-25s %14ju %14s\n", "current entries", s->states, "");
584 TAILQ_FOREACH(c, &s->fcounters, entry) {
585 printf(" %-25s %14ju ", c->name, c->counter);
586 if (runtime > 0)
587 printf("%14.1f/s\n",
588 (double)c->counter / (double)runtime);
589 else
590 printf("%14s\n", "");
591 }
592 if (opts & PF_OPT_VERBOSE) {
593 printf("Source Tracking Table\n");
594 printf(" %-25s %14ju %14s\n", "current entries",
595 s->src_nodes, "");
596 TAILQ_FOREACH(c, &s->scounters, entry) {
597 printf(" %-25s %14ju ", c->name, c->counter);
598 if (runtime > 0)
599 printf("%14.1f/s\n",
600 (double)c->counter / (double)runtime);
601 else
602 printf("%14s\n", "");
603 }
604 }
605 printf("Counters\n");
606 TAILQ_FOREACH(c, &s->counters, entry) {
607 printf(" %-25s %14ju ", c->name, c->counter);
608 if (runtime > 0)
609 printf("%14.1f/s\n",
610 (double)c->counter / (double)runtime);
611 else
612 printf("%14s\n", "");
613 }
614 if (opts & PF_OPT_VERBOSE) {
615 printf("Limit Counters\n");
616 TAILQ_FOREACH(c, &s->lcounters, entry) {
617 printf(" %-25s %14ju ", c->name, c->counter);
618 if (runtime > 0)
619 printf("%14.1f/s\n",
620 (double)c->counter / (double)runtime);
621 else
622 printf("%14s\n", "");
623 }
624
625 printf("Syncookies\n");
626 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE);
627 printf(" %-25s %s\n", "mode",
628 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]);
629 printf(" %-25s %s\n", "active",
630 s->syncookies_active ? "active" : "inactive");
631 if (opts & PF_OPT_VERBOSE2) {
632 printf(" %-25s %d %%\n", "highwater", cookies->highwater);
633 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater);
634 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states);
635 }
636 printf("Reassemble %24s %s\n",
637 s->reass & PF_REASS_ENABLED ? "yes" : "no",
638 s->reass & PF_REASS_NODF ? "no-df" : ""
639 );
640 }
641 }
642
643 void
print_running(struct pfctl_status * status)644 print_running(struct pfctl_status *status)
645 {
646 printf("%s\n", status->running ? "Enabled" : "Disabled");
647 }
648
649 void
print_src_node(struct pfctl_src_node * sn,int opts)650 print_src_node(struct pfctl_src_node *sn, int opts)
651 {
652 struct pf_addr_wrap aw;
653 uint64_t min, sec;
654 const char *sn_type_names[] = PF_SN_TYPE_NAMES;
655
656 memset(&aw, 0, sizeof(aw));
657 if (sn->af == AF_INET)
658 aw.v.a.mask.addr32[0] = 0xffffffff;
659 else
660 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
661
662 aw.v.a.addr = sn->addr;
663 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
664 printf(" -> ");
665 aw.v.a.addr = sn->raddr;
666 print_addr(&aw, sn->naf ? sn->naf : sn->af, opts & PF_OPT_VERBOSE2);
667 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states,
668 sn->conn, sn->conn_rate.count / 1000,
669 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds);
670 if (opts & PF_OPT_VERBOSE) {
671 sec = sn->creation % 60;
672 sn->creation /= 60;
673 min = sn->creation % 60;
674 sn->creation /= 60;
675 printf(" age %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64,
676 sn->creation, min, sec);
677 if (sn->states == 0) {
678 sec = sn->expire % 60;
679 sn->expire /= 60;
680 min = sn->expire % 60;
681 sn->expire /= 60;
682 printf(", expires in %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64,
683 sn->expire, min, sec);
684 }
685 printf(", %" PRIu64 " pkts, %" PRIu64 " bytes",
686 sn->packets[0] + sn->packets[1],
687 sn->bytes[0] + sn->bytes[1]);
688 switch (sn->ruletype) {
689 case PF_NAT:
690 if (sn->rule != -1)
691 printf(", nat rule %u", sn->rule);
692 break;
693 case PF_RDR:
694 if (sn->rule != -1)
695 printf(", rdr rule %u", sn->rule);
696 break;
697 case PF_PASS:
698 case PF_MATCH:
699 if (sn->rule != -1)
700 printf(", filter rule %u", sn->rule);
701 break;
702 }
703 printf(", %s", sn_type_names[sn->type]);
704 printf("\n");
705 }
706 }
707
708 static void
print_eth_addr(const struct pfctl_eth_addr * a)709 print_eth_addr(const struct pfctl_eth_addr *a)
710 {
711 int i, masklen = ETHER_ADDR_LEN * 8;
712 bool seen_unset = false;
713
714 for (i = 0; i < ETHER_ADDR_LEN; i++) {
715 if (a->addr[i] != 0)
716 break;
717 }
718
719 /* Unset, so don't print anything. */
720 if (i == ETHER_ADDR_LEN)
721 return;
722
723 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "",
724 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4],
725 a->addr[5]);
726
727 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) {
728 bool isset = a->mask[i / 8] & (1 << i % 8);
729
730 if (! seen_unset) {
731 if (isset)
732 continue;
733 seen_unset = true;
734 masklen = i;
735 } else {
736 /* Not actually a continuous mask, so print the whole
737 * thing. */
738 if (isset)
739 break;
740 continue;
741 }
742 }
743
744 if (masklen == (ETHER_ADDR_LEN * 8))
745 return;
746
747 if (i == (ETHER_ADDR_LEN * 8)) {
748 printf("/%d", masklen);
749 return;
750 }
751
752 printf("&%02x:%02x:%02x:%02x:%02x:%02x",
753 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4],
754 a->mask[5]);
755 }
756
757 void
print_eth_rule(struct pfctl_eth_rule * r,const char * anchor_call,int rule_numbers)758 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call,
759 int rule_numbers)
760 {
761 static const char *actiontypes[] = { "pass", "block", "", "", "", "",
762 "", "", "", "", "", "", "match" };
763
764 int i;
765
766 if (rule_numbers)
767 printf("@%u ", r->nr);
768
769 printf("ether ");
770 if (anchor_call[0]) {
771 if (anchor_call[0] == '_') {
772 printf("anchor");
773 } else
774 printf("anchor \"%s\"", anchor_call);
775 } else {
776 printf("%s", actiontypes[r->action]);
777 }
778 if (r->direction == PF_IN)
779 printf(" in");
780 else if (r->direction == PF_OUT)
781 printf(" out");
782
783 if (r->quick)
784 printf(" quick");
785 if (r->ifname[0]) {
786 if (r->ifnot)
787 printf(" on ! %s", r->ifname);
788 else
789 printf(" on %s", r->ifname);
790 }
791 if (r->bridge_to[0])
792 printf(" bridge-to %s", r->bridge_to);
793 if (r->proto)
794 printf(" proto 0x%04x", r->proto);
795
796 if (r->src.isset) {
797 printf(" from ");
798 print_eth_addr(&r->src);
799 }
800 if (r->dst.isset) {
801 printf(" to ");
802 print_eth_addr(&r->dst);
803 }
804 printf(" l3");
805 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst,
806 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0,
807 0, 0);
808
809 i = 0;
810 while (r->label[i][0])
811 printf(" label \"%s\"", r->label[i++]);
812 if (r->ridentifier)
813 printf(" ridentifier %u", r->ridentifier);
814
815 if (r->qname[0])
816 printf(" queue %s", r->qname);
817 if (r->tagname[0])
818 printf(" tag %s", r->tagname);
819 if (r->match_tagname[0]) {
820 if (r->match_tag_not)
821 printf(" !");
822 printf(" tagged %s", r->match_tagname);
823 }
824 if (r->dnpipe)
825 printf(" %s %d",
826 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
827 r->dnpipe);
828 }
829
830 void
print_rule(struct pfctl_rule * r,const char * anchor_call,int verbose,int numeric)831 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric)
832 {
833 static const char *actiontypes[] = { "pass", "block", "scrub",
834 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr",
835 "", "", "match"};
836 static const char *anchortypes[] = { "anchor", "anchor", "anchor",
837 "anchor", "nat-anchor", "nat-anchor", "binat-anchor",
838 "binat-anchor", "rdr-anchor", "rdr-anchor" };
839 int i, ropts;
840 char *p;
841
842 if (verbose)
843 printf("@%d ", r->nr);
844 if (r->action == PF_MATCH)
845 printf("match");
846 else if (r->action > PF_NORDR)
847 printf("action(%d)", r->action);
848 else if (anchor_call[0]) {
849 p = strrchr(anchor_call, '/');
850 if (p ? p[1] == '_' : anchor_call[0] == '_')
851 printf("%s", anchortypes[r->action]);
852 else
853 printf("%s \"%s\"", anchortypes[r->action],
854 anchor_call);
855 } else {
856 printf("%s", actiontypes[r->action]);
857 if (r->natpass)
858 printf(" pass");
859 }
860 if (r->action == PF_DROP) {
861 if (r->rule_flag & PFRULE_RETURN)
862 printf(" return");
863 else if (r->rule_flag & PFRULE_RETURNRST) {
864 if (!r->return_ttl)
865 printf(" return-rst");
866 else
867 printf(" return-rst(ttl %d)", r->return_ttl);
868 } else if (r->rule_flag & PFRULE_RETURNICMP) {
869 const struct icmpcodeent *ic, *ic6;
870
871 ic = geticmpcodebynumber(r->return_icmp >> 8,
872 r->return_icmp & 255, AF_INET);
873 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
874 r->return_icmp6 & 255, AF_INET6);
875
876 switch (r->af) {
877 case AF_INET:
878 printf(" return-icmp");
879 if (ic == NULL)
880 printf("(%u)", r->return_icmp & 255);
881 else
882 printf("(%s)", ic->name);
883 break;
884 case AF_INET6:
885 printf(" return-icmp6");
886 if (ic6 == NULL)
887 printf("(%u)", r->return_icmp6 & 255);
888 else
889 printf("(%s)", ic6->name);
890 break;
891 default:
892 printf(" return-icmp");
893 if (ic == NULL)
894 printf("(%u, ", r->return_icmp & 255);
895 else
896 printf("(%s, ", ic->name);
897 if (ic6 == NULL)
898 printf("%u)", r->return_icmp6 & 255);
899 else
900 printf("%s)", ic6->name);
901 break;
902 }
903 } else
904 printf(" drop");
905 }
906 if (r->direction == PF_IN)
907 printf(" in");
908 else if (r->direction == PF_OUT)
909 printf(" out");
910 if (r->log) {
911 printf(" log");
912 if (r->log & ~PF_LOG || r->logif) {
913 int count = 0;
914
915 printf(" (");
916 if (r->log & PF_LOG_ALL)
917 printf("%sall", count++ ? ", " : "");
918 if (r->log & PF_LOG_MATCHES)
919 printf("%smatches", count++ ? ", " : "");
920 if (r->log & PF_LOG_SOCKET_LOOKUP)
921 printf("%suser", count++ ? ", " : "");
922 if (r->logif)
923 printf("%sto pflog%u", count++ ? ", " : "",
924 r->logif);
925 printf(")");
926 }
927 }
928 if (r->quick)
929 printf(" quick");
930 if (r->ifname[0]) {
931 if (r->ifnot)
932 printf(" on ! %s", r->ifname);
933 else
934 printf(" on %s", r->ifname);
935 }
936 if (r->rt) {
937 if (r->rt == PF_ROUTETO)
938 printf(" route-to");
939 else if (r->rt == PF_REPLYTO)
940 printf(" reply-to");
941 else if (r->rt == PF_DUPTO)
942 printf(" dup-to");
943 printf(" ");
944 print_pool(&r->rdr, 0, 0, r->af, PF_PASS);
945 print_pool(&r->route, 0, 0,
946 r->rule_flag & PFRULE_AFTO && r->rt != PF_REPLYTO ? r->naf : r->af,
947 PF_PASS);
948 }
949 if (r->af) {
950 if (r->af == AF_INET)
951 printf(" inet");
952 else
953 printf(" inet6");
954 }
955 if (r->proto) {
956 const char *protoname;
957
958 if ((protoname = pfctl_proto2name(r->proto)) != NULL)
959 printf(" proto %s", protoname);
960 else
961 printf(" proto %u", r->proto);
962 }
963 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto,
964 verbose, numeric);
965 if (r->rcv_ifname[0])
966 printf(" %sreceived-on %s", r->rcvifnot ? "!" : "",
967 r->rcv_ifname);
968 if (r->uid.op)
969 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user",
970 UID_MAX);
971 if (r->gid.op)
972 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group",
973 GID_MAX);
974 if (r->flags || r->flagset) {
975 printf(" flags ");
976 print_flags(r->flags);
977 printf("/");
978 print_flags(r->flagset);
979 } else if ((r->action == PF_PASS || r->action == PF_MATCH) &&
980 (!r->proto || r->proto == IPPROTO_TCP) &&
981 !(r->rule_flag & PFRULE_FRAGMENT) &&
982 !anchor_call[0] && r->keep_state)
983 printf(" flags any");
984 if (r->type) {
985 const struct icmptypeent *it;
986
987 it = geticmptypebynumber(r->type-1, r->af);
988 if (r->af != AF_INET6)
989 printf(" icmp-type");
990 else
991 printf(" icmp6-type");
992 if (it != NULL)
993 printf(" %s", it->name);
994 else
995 printf(" %u", r->type-1);
996 if (r->code) {
997 const struct icmpcodeent *ic;
998
999 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
1000 if (ic != NULL)
1001 printf(" code %s", ic->name);
1002 else
1003 printf(" code %u", r->code-1);
1004 }
1005 }
1006 if (r->tos)
1007 printf(" tos 0x%2.2x", r->tos);
1008 if (r->prio)
1009 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio);
1010 if (r->scrub_flags & PFSTATE_SETMASK) {
1011 char *comma = "";
1012 printf(" set (");
1013 if (r->scrub_flags & PFSTATE_SETPRIO) {
1014 if (r->set_prio[0] == r->set_prio[1])
1015 printf("%s prio %u", comma, r->set_prio[0]);
1016 else
1017 printf("%s prio(%u, %u)", comma, r->set_prio[0],
1018 r->set_prio[1]);
1019 comma = ",";
1020 }
1021 if (r->scrub_flags & PFSTATE_SETTOS) {
1022 printf("%s tos 0x%2.2x", comma, r->set_tos);
1023 comma = ",";
1024 }
1025 printf(" )");
1026 }
1027 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0])
1028 printf(" no state");
1029 else if (r->keep_state == PF_STATE_NORMAL)
1030 printf(" keep state");
1031 else if (r->keep_state == PF_STATE_MODULATE)
1032 printf(" modulate state");
1033 else if (r->keep_state == PF_STATE_SYNPROXY)
1034 printf(" synproxy state");
1035 if (r->prob) {
1036 char buf[20];
1037
1038 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
1039 for (i = strlen(buf)-1; i > 0; i--) {
1040 if (buf[i] == '0')
1041 buf[i] = '\0';
1042 else {
1043 if (buf[i] == '.')
1044 buf[i] = '\0';
1045 break;
1046 }
1047 }
1048 printf(" probability %s%%", buf);
1049 }
1050 ropts = 0;
1051 if (r->max_states || r->max_src_nodes || r->max_src_states)
1052 ropts = 1;
1053 if (r->rule_flag & PFRULE_NOSYNC)
1054 ropts = 1;
1055 if (r->rule_flag & PFRULE_SRCTRACK)
1056 ropts = 1;
1057 if (r->rule_flag & PFRULE_IFBOUND)
1058 ropts = 1;
1059 if (r->rule_flag & PFRULE_STATESLOPPY)
1060 ropts = 1;
1061 if (r->rule_flag & PFRULE_PFLOW)
1062 ropts = 1;
1063 for (i = 0; !ropts && i < PFTM_MAX; ++i)
1064 if (r->timeout[i])
1065 ropts = 1;
1066 if (ropts) {
1067 printf(" (");
1068 if (r->max_states) {
1069 printf("max %u", r->max_states);
1070 ropts = 0;
1071 }
1072 if (r->rule_flag & PFRULE_NOSYNC) {
1073 if (!ropts)
1074 printf(", ");
1075 printf("no-sync");
1076 ropts = 0;
1077 }
1078 if (r->rule_flag & PFRULE_SRCTRACK) {
1079 if (!ropts)
1080 printf(", ");
1081 printf("source-track");
1082 if (r->rule_flag & PFRULE_RULESRCTRACK)
1083 printf(" rule");
1084 else
1085 printf(" global");
1086 ropts = 0;
1087 }
1088 if (r->max_src_states) {
1089 if (!ropts)
1090 printf(", ");
1091 printf("max-src-states %u", r->max_src_states);
1092 ropts = 0;
1093 }
1094 if (r->max_src_conn) {
1095 if (!ropts)
1096 printf(", ");
1097 printf("max-src-conn %u", r->max_src_conn);
1098 ropts = 0;
1099 }
1100 if (r->max_src_conn_rate.limit) {
1101 if (!ropts)
1102 printf(", ");
1103 printf("max-src-conn-rate %u/%u",
1104 r->max_src_conn_rate.limit,
1105 r->max_src_conn_rate.seconds);
1106 ropts = 0;
1107 }
1108 if (r->max_src_nodes) {
1109 if (!ropts)
1110 printf(", ");
1111 printf("max-src-nodes %u", r->max_src_nodes);
1112 ropts = 0;
1113 }
1114 if (r->overload_tblname[0]) {
1115 if (!ropts)
1116 printf(", ");
1117 printf("overload <%s>", r->overload_tblname);
1118 if (r->flush)
1119 printf(" flush");
1120 if (r->flush & PF_FLUSH_GLOBAL)
1121 printf(" global");
1122 }
1123 if (r->rule_flag & PFRULE_IFBOUND) {
1124 if (!ropts)
1125 printf(", ");
1126 printf("if-bound");
1127 ropts = 0;
1128 }
1129 if (r->rule_flag & PFRULE_STATESLOPPY) {
1130 if (!ropts)
1131 printf(", ");
1132 printf("sloppy");
1133 ropts = 0;
1134 }
1135 if (r->rule_flag & PFRULE_PFLOW) {
1136 if (!ropts)
1137 printf(", ");
1138 printf("pflow");
1139 ropts = 0;
1140 }
1141 for (i = 0; i < PFTM_MAX; ++i)
1142 if (r->timeout[i]) {
1143 int j;
1144
1145 if (!ropts)
1146 printf(", ");
1147 ropts = 0;
1148 for (j = 0; pf_timeouts[j].name != NULL;
1149 ++j)
1150 if (pf_timeouts[j].timeout == i)
1151 break;
1152 printf("%s %u", pf_timeouts[j].name == NULL ?
1153 "inv.timeout" : pf_timeouts[j].name,
1154 r->timeout[i]);
1155 }
1156 printf(")");
1157 }
1158 if (r->allow_opts)
1159 printf(" allow-opts");
1160 if (r->rule_flag & PFRULE_FRAGMENT)
1161 printf(" fragment");
1162 if (r->action == PF_SCRUB) {
1163 /* Scrub flags for old-style scrub. */
1164 if (r->rule_flag & PFRULE_NODF)
1165 printf(" no-df");
1166 if (r->rule_flag & PFRULE_RANDOMID)
1167 printf(" random-id");
1168 if (r->min_ttl)
1169 printf(" min-ttl %d", r->min_ttl);
1170 if (r->max_mss)
1171 printf(" max-mss %d", r->max_mss);
1172 if (r->rule_flag & PFRULE_SET_TOS)
1173 printf(" set-tos 0x%2.2x", r->set_tos);
1174 if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
1175 printf(" reassemble tcp");
1176 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */
1177 printf(" fragment %sreassemble",
1178 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : "");
1179 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) {
1180 /* Scrub actions on normal rules. */
1181 printf(" scrub(");
1182 if (r->scrub_flags & PFSTATE_NODF)
1183 printf(" no-df");
1184 if (r->scrub_flags & PFSTATE_RANDOMID)
1185 printf(" random-id");
1186 if (r->min_ttl)
1187 printf(" min-ttl %d", r->min_ttl);
1188 if (r->scrub_flags & PFSTATE_SETTOS)
1189 printf(" set-tos 0x%2.2x", r->set_tos);
1190 if (r->scrub_flags & PFSTATE_SCRUB_TCP)
1191 printf(" reassemble tcp");
1192 if (r->max_mss)
1193 printf(" max-mss %d", r->max_mss);
1194 printf(")");
1195 }
1196 i = 0;
1197 while (r->label[i][0])
1198 printf(" label \"%s\"", r->label[i++]);
1199 if (r->ridentifier)
1200 printf(" ridentifier %u", r->ridentifier);
1201 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */
1202 if (r->dnrpipe)
1203 printf(" %s(%d, %d)",
1204 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1205 r->dnpipe, r->dnrpipe);
1206 else if (r->dnpipe)
1207 printf(" %s %d",
1208 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1209 r->dnpipe);
1210 if (r->qname[0] && r->pqname[0])
1211 printf(" queue(%s, %s)", r->qname, r->pqname);
1212 else if (r->qname[0])
1213 printf(" queue %s", r->qname);
1214 if (r->tagname[0])
1215 printf(" tag %s", r->tagname);
1216 if (r->match_tagname[0]) {
1217 if (r->match_tag_not)
1218 printf(" !");
1219 printf(" tagged %s", r->match_tagname);
1220 }
1221 if (r->rtableid != -1)
1222 printf(" rtable %u", r->rtableid);
1223 if (r->divert.port) {
1224 #ifdef __FreeBSD__
1225 printf(" divert-to %u", ntohs(r->divert.port));
1226 #else
1227 if (PF_AZERO(&r->divert.addr, r->af)) {
1228 printf(" divert-reply");
1229 } else {
1230 /* XXX cut&paste from print_addr */
1231 char buf[48];
1232
1233 printf(" divert-to ");
1234 if (inet_ntop(r->af, &r->divert.addr, buf,
1235 sizeof(buf)) == NULL)
1236 printf("?");
1237 else
1238 printf("%s", buf);
1239 printf(" port %u", ntohs(r->divert.port));
1240 }
1241 #endif
1242 }
1243 if (anchor_call[0])
1244 return;
1245 if (r->action == PF_NAT || r->action == PF_BINAT || r->action == PF_RDR) {
1246 printf(" -> ");
1247 print_pool(&r->rdr, r->rdr.proxy_port[0],
1248 r->rdr.proxy_port[1], r->af, r->action);
1249 } else {
1250 if (!TAILQ_EMPTY(&r->nat.list)) {
1251 if (r->rule_flag & PFRULE_AFTO) {
1252 printf(" af-to %s from ", r->naf == AF_INET ? "inet" : "inet6");
1253 } else {
1254 printf(" nat-to ");
1255 }
1256 print_pool(&r->nat, r->nat.proxy_port[0],
1257 r->nat.proxy_port[1], r->naf ? r->naf : r->af,
1258 PF_NAT);
1259 }
1260 if (!TAILQ_EMPTY(&r->rdr.list)) {
1261 if (r->rule_flag & PFRULE_AFTO) {
1262 printf(" to ");
1263 } else {
1264 printf(" rdr-to ");
1265 }
1266 print_pool(&r->rdr, r->rdr.proxy_port[0],
1267 r->rdr.proxy_port[1], r->naf ? r->naf : r->af,
1268 PF_RDR);
1269 }
1270 }
1271 }
1272
1273 void
print_tabledef(const char * name,int flags,int addrs,struct node_tinithead * nodes)1274 print_tabledef(const char *name, int flags, int addrs,
1275 struct node_tinithead *nodes)
1276 {
1277 struct node_tinit *ti, *nti;
1278 struct node_host *h;
1279
1280 printf("table <%s>", name);
1281 if (flags & PFR_TFLAG_CONST)
1282 printf(" const");
1283 if (flags & PFR_TFLAG_PERSIST)
1284 printf(" persist");
1285 if (flags & PFR_TFLAG_COUNTERS)
1286 printf(" counters");
1287 SIMPLEQ_FOREACH(ti, nodes, entries) {
1288 if (ti->file) {
1289 printf(" file \"%s\"", ti->file);
1290 continue;
1291 }
1292 printf(" {");
1293 for (;;) {
1294 for (h = ti->host; h != NULL; h = h->next) {
1295 printf(h->not ? " !" : " ");
1296 print_addr(&h->addr, h->af, 0);
1297 }
1298 nti = SIMPLEQ_NEXT(ti, entries);
1299 if (nti != NULL && nti->file == NULL)
1300 ti = nti; /* merge lists */
1301 else
1302 break;
1303 }
1304 printf(" }");
1305 }
1306 if (addrs && SIMPLEQ_EMPTY(nodes))
1307 printf(" { }");
1308 printf("\n");
1309 }
1310
1311 int
parse_flags(char * s)1312 parse_flags(char *s)
1313 {
1314 char *p, *q;
1315 uint16_t f = 0;
1316
1317 for (p = s; *p; p++) {
1318 if ((q = strchr(tcpflags, *p)) == NULL)
1319 return -1;
1320 else
1321 f |= 1 << (q - tcpflags);
1322 }
1323 return (f ? f : TH_FLAGS);
1324 }
1325
1326 void
set_ipmask(struct node_host * h,u_int8_t b)1327 set_ipmask(struct node_host *h, u_int8_t b)
1328 {
1329 struct pf_addr *m, *n;
1330 int i, j = 0;
1331
1332 m = &h->addr.v.a.mask;
1333 memset(m, 0, sizeof(*m));
1334
1335 while (b >= 32) {
1336 m->addr32[j++] = 0xffffffff;
1337 b -= 32;
1338 }
1339 for (i = 31; i > 31-b; --i)
1340 m->addr32[j] |= (1 << i);
1341 if (b)
1342 m->addr32[j] = htonl(m->addr32[j]);
1343
1344 /* Mask off bits of the address that will never be used. */
1345 n = &h->addr.v.a.addr;
1346 if (h->addr.type == PF_ADDR_ADDRMASK)
1347 for (i = 0; i < 4; i++)
1348 n->addr32[i] = n->addr32[i] & m->addr32[i];
1349 }
1350
1351 int
check_netmask(struct node_host * h,sa_family_t af)1352 check_netmask(struct node_host *h, sa_family_t af)
1353 {
1354 struct node_host *n = NULL;
1355 struct pf_addr *m;
1356
1357 for (n = h; n != NULL; n = n->next) {
1358 if (h->addr.type == PF_ADDR_TABLE)
1359 continue;
1360 m = &h->addr.v.a.mask;
1361 /* netmasks > 32 bit are invalid on v4 */
1362 if (af == AF_INET &&
1363 (m->addr32[1] || m->addr32[2] || m->addr32[3])) {
1364 fprintf(stderr, "netmask %u invalid for IPv4 address\n",
1365 unmask(m, AF_INET6));
1366 return (1);
1367 }
1368 }
1369 return (0);
1370 }
1371
1372 struct node_host *
gen_dynnode(struct node_host * h,sa_family_t af)1373 gen_dynnode(struct node_host *h, sa_family_t af)
1374 {
1375 struct node_host *n;
1376 struct pf_addr *m;
1377
1378 if (h->addr.type != PF_ADDR_DYNIFTL)
1379 return (NULL);
1380
1381 if ((n = calloc(1, sizeof(*n))) == NULL)
1382 return (NULL);
1383 bcopy(h, n, sizeof(*n));
1384 n->ifname = NULL;
1385 n->next = NULL;
1386 n->tail = NULL;
1387
1388 /* fix up netmask */
1389 m = &n->addr.v.a.mask;
1390 if (af == AF_INET && unmask(m, AF_INET6) > 32)
1391 set_ipmask(n, 32);
1392
1393 return (n);
1394 }
1395
1396 /* interface lookup routines */
1397
1398 static struct node_host *iftab;
1399
1400 /*
1401 * Retrieve the list of groups this interface is a member of and make sure
1402 * each group is in the group map.
1403 */
1404 static void
ifa_add_groups_to_map(char * ifa_name)1405 ifa_add_groups_to_map(char *ifa_name)
1406 {
1407 int s, len;
1408 struct ifgroupreq ifgr;
1409 struct ifg_req *ifg;
1410
1411 s = get_query_socket();
1412
1413 /* Get size of group list for this interface */
1414 memset(&ifgr, 0, sizeof(ifgr));
1415 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ);
1416 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1417 err(1, "SIOCGIFGROUP");
1418
1419 /* Retrieve group list for this interface */
1420 len = ifgr.ifgr_len;
1421 ifgr.ifgr_groups =
1422 (struct ifg_req *)calloc(len / sizeof(struct ifg_req),
1423 sizeof(struct ifg_req));
1424 if (ifgr.ifgr_groups == NULL)
1425 err(1, "calloc");
1426 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1427 err(1, "SIOCGIFGROUP");
1428
1429 ifg = ifgr.ifgr_groups;
1430 for (; ifg && len >= sizeof(struct ifg_req); ifg++) {
1431 len -= sizeof(struct ifg_req);
1432 if (strcmp(ifg->ifgrq_group, "all")) {
1433 ENTRY item;
1434 ENTRY *ret_item;
1435 int *answer;
1436
1437 item.key = ifg->ifgrq_group;
1438 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) {
1439 struct ifgroupreq ifgr2;
1440
1441 /* Don't know the answer yet */
1442 if ((answer = malloc(sizeof(int))) == NULL)
1443 err(1, "malloc");
1444
1445 bzero(&ifgr2, sizeof(ifgr2));
1446 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group,
1447 sizeof(ifgr2.ifgr_name));
1448 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0)
1449 *answer = ifgr2.ifgr_len;
1450 else
1451 *answer = 0;
1452
1453 item.key = strdup(ifg->ifgrq_group);
1454 item.data = answer;
1455 if (hsearch_r(item, ENTER, &ret_item,
1456 &isgroup_map) == 0)
1457 err(1, "interface group query response"
1458 " map insert");
1459 }
1460 }
1461 }
1462 free(ifgr.ifgr_groups);
1463 }
1464
1465 void
ifa_load(void)1466 ifa_load(void)
1467 {
1468 struct ifaddrs *ifap, *ifa;
1469 struct node_host *n = NULL, *h = NULL;
1470
1471 if (getifaddrs(&ifap) < 0)
1472 err(1, "getifaddrs");
1473
1474 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1475 if (!(ifa->ifa_addr->sa_family == AF_INET ||
1476 ifa->ifa_addr->sa_family == AF_INET6 ||
1477 ifa->ifa_addr->sa_family == AF_LINK))
1478 continue;
1479 n = calloc(1, sizeof(struct node_host));
1480 if (n == NULL)
1481 err(1, "address: calloc");
1482 n->af = ifa->ifa_addr->sa_family;
1483 n->ifa_flags = ifa->ifa_flags;
1484 #ifdef __KAME__
1485 if (n->af == AF_INET6 &&
1486 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
1487 ifa->ifa_addr)->sin6_addr) &&
1488 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
1489 0) {
1490 struct sockaddr_in6 *sin6;
1491
1492 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1493 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
1494 sin6->sin6_addr.s6_addr[3];
1495 sin6->sin6_addr.s6_addr[2] = 0;
1496 sin6->sin6_addr.s6_addr[3] = 0;
1497 }
1498 #endif
1499 n->ifindex = 0;
1500 if (n->af == AF_INET) {
1501 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *)
1502 ifa->ifa_addr)->sin_addr.s_addr,
1503 sizeof(struct in_addr));
1504 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *)
1505 ifa->ifa_netmask)->sin_addr.s_addr,
1506 sizeof(struct in_addr));
1507 if (ifa->ifa_broadaddr != NULL)
1508 memcpy(&n->bcast, &((struct sockaddr_in *)
1509 ifa->ifa_broadaddr)->sin_addr.s_addr,
1510 sizeof(struct in_addr));
1511 if (ifa->ifa_dstaddr != NULL)
1512 memcpy(&n->peer, &((struct sockaddr_in *)
1513 ifa->ifa_dstaddr)->sin_addr.s_addr,
1514 sizeof(struct in_addr));
1515 } else if (n->af == AF_INET6) {
1516 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *)
1517 ifa->ifa_addr)->sin6_addr.s6_addr,
1518 sizeof(struct in6_addr));
1519 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *)
1520 ifa->ifa_netmask)->sin6_addr.s6_addr,
1521 sizeof(struct in6_addr));
1522 if (ifa->ifa_broadaddr != NULL)
1523 memcpy(&n->bcast, &((struct sockaddr_in6 *)
1524 ifa->ifa_broadaddr)->sin6_addr.s6_addr,
1525 sizeof(struct in6_addr));
1526 if (ifa->ifa_dstaddr != NULL)
1527 memcpy(&n->peer, &((struct sockaddr_in6 *)
1528 ifa->ifa_dstaddr)->sin6_addr.s6_addr,
1529 sizeof(struct in6_addr));
1530 n->ifindex = ((struct sockaddr_in6 *)
1531 ifa->ifa_addr)->sin6_scope_id;
1532 } else if (n->af == AF_LINK) {
1533 ifa_add_groups_to_map(ifa->ifa_name);
1534 n->ifindex = ((struct sockaddr_dl *)
1535 ifa->ifa_addr)->sdl_index;
1536 }
1537 if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
1538 err(1, "ifa_load: strdup");
1539 n->next = NULL;
1540 n->tail = n;
1541 if (h == NULL)
1542 h = n;
1543 else {
1544 h->tail->next = n;
1545 h->tail = n;
1546 }
1547 }
1548
1549 iftab = h;
1550 freeifaddrs(ifap);
1551 }
1552
1553 static int
get_socket_domain(void)1554 get_socket_domain(void)
1555 {
1556 int sdom;
1557
1558 sdom = AF_UNSPEC;
1559 #ifdef WITH_INET6
1560 if (sdom == AF_UNSPEC && feature_present("inet6"))
1561 sdom = AF_INET6;
1562 #endif
1563 #ifdef WITH_INET
1564 if (sdom == AF_UNSPEC && feature_present("inet"))
1565 sdom = AF_INET;
1566 #endif
1567 if (sdom == AF_UNSPEC)
1568 sdom = AF_LINK;
1569
1570 return (sdom);
1571 }
1572
1573 int
get_query_socket(void)1574 get_query_socket(void)
1575 {
1576 static int s = -1;
1577
1578 if (s == -1) {
1579 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1)
1580 err(1, "socket");
1581 }
1582
1583 return (s);
1584 }
1585
1586 /*
1587 * Returns the response len if the name is a group, otherwise returns 0.
1588 */
1589 static int
is_a_group(char * name)1590 is_a_group(char *name)
1591 {
1592 ENTRY item;
1593 ENTRY *ret_item;
1594
1595 item.key = name;
1596 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0)
1597 return (0);
1598
1599 return (*(int *)ret_item->data);
1600 }
1601
1602 unsigned int
ifa_nametoindex(const char * ifa_name)1603 ifa_nametoindex(const char *ifa_name)
1604 {
1605 struct node_host *p;
1606
1607 for (p = iftab; p; p = p->next) {
1608 if (p->af == AF_LINK && strcmp(p->ifname, ifa_name) == 0)
1609 return (p->ifindex);
1610 }
1611 errno = ENXIO;
1612 return (0);
1613 }
1614
1615 char *
ifa_indextoname(unsigned int ifindex,char * ifa_name)1616 ifa_indextoname(unsigned int ifindex, char *ifa_name)
1617 {
1618 struct node_host *p;
1619
1620 for (p = iftab; p; p = p->next) {
1621 if (p->af == AF_LINK && ifindex == p->ifindex) {
1622 strlcpy(ifa_name, p->ifname, IFNAMSIZ);
1623 return (ifa_name);
1624 }
1625 }
1626 errno = ENXIO;
1627 return (NULL);
1628 }
1629
1630 struct node_host *
ifa_exists(char * ifa_name)1631 ifa_exists(char *ifa_name)
1632 {
1633 struct node_host *n;
1634
1635 if (iftab == NULL)
1636 ifa_load();
1637
1638 /* check whether this is a group */
1639 if (is_a_group(ifa_name)) {
1640 /* fake a node_host */
1641 if ((n = calloc(1, sizeof(*n))) == NULL)
1642 err(1, "calloc");
1643 if ((n->ifname = strdup(ifa_name)) == NULL)
1644 err(1, "strdup");
1645 return (n);
1646 }
1647
1648 for (n = iftab; n; n = n->next) {
1649 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
1650 return (n);
1651 }
1652
1653 return (NULL);
1654 }
1655
1656 struct node_host *
ifa_grouplookup(char * ifa_name,int flags)1657 ifa_grouplookup(char *ifa_name, int flags)
1658 {
1659 struct ifg_req *ifg;
1660 struct ifgroupreq ifgr;
1661 int s, len;
1662 struct node_host *n, *h = NULL;
1663
1664 s = get_query_socket();
1665 len = is_a_group(ifa_name);
1666 if (len == 0)
1667 return (NULL);
1668 bzero(&ifgr, sizeof(ifgr));
1669 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
1670 ifgr.ifgr_len = len;
1671 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
1672 err(1, "calloc");
1673 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
1674 err(1, "SIOCGIFGMEMB");
1675
1676 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req);
1677 ifg++) {
1678 len -= sizeof(struct ifg_req);
1679 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL)
1680 continue;
1681 if (h == NULL)
1682 h = n;
1683 else {
1684 h->tail->next = n;
1685 h->tail = n->tail;
1686 }
1687 }
1688 free(ifgr.ifgr_groups);
1689
1690 return (h);
1691 }
1692
1693 struct node_host *
ifa_lookup(char * ifa_name,int flags)1694 ifa_lookup(char *ifa_name, int flags)
1695 {
1696 struct node_host *p = NULL, *h = NULL, *n = NULL;
1697 int got4 = 0, got6 = 0;
1698 const char *last_if = NULL;
1699
1700 /* first load iftab and isgroup_map */
1701 if (iftab == NULL)
1702 ifa_load();
1703
1704 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL)
1705 return (h);
1706
1707 if (!strncmp(ifa_name, "self", IFNAMSIZ))
1708 ifa_name = NULL;
1709
1710 for (p = iftab; p; p = p->next) {
1711 if (ifa_skip_if(ifa_name, p))
1712 continue;
1713 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
1714 continue;
1715 if ((flags & PFI_AFLAG_BROADCAST) &&
1716 !(p->ifa_flags & IFF_BROADCAST))
1717 continue;
1718 if ((flags & PFI_AFLAG_BROADCAST) && p->bcast.v4.s_addr == 0)
1719 continue;
1720 if ((flags & PFI_AFLAG_PEER) &&
1721 !(p->ifa_flags & IFF_POINTOPOINT))
1722 continue;
1723 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
1724 continue;
1725 if (last_if == NULL || strcmp(last_if, p->ifname))
1726 got4 = got6 = 0;
1727 last_if = p->ifname;
1728 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
1729 continue;
1730 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 &&
1731 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6))
1732 continue;
1733 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
1734 continue;
1735 if (p->af == AF_INET)
1736 got4 = 1;
1737 else
1738 got6 = 1;
1739 n = calloc(1, sizeof(struct node_host));
1740 if (n == NULL)
1741 err(1, "address: calloc");
1742 n->af = p->af;
1743 if (flags & PFI_AFLAG_BROADCAST)
1744 memcpy(&n->addr.v.a.addr, &p->bcast,
1745 sizeof(struct pf_addr));
1746 else if (flags & PFI_AFLAG_PEER)
1747 memcpy(&n->addr.v.a.addr, &p->peer,
1748 sizeof(struct pf_addr));
1749 else
1750 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
1751 sizeof(struct pf_addr));
1752 if (flags & PFI_AFLAG_NETWORK)
1753 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af));
1754 else {
1755 if (n->af == AF_INET) {
1756 if (p->ifa_flags & IFF_LOOPBACK &&
1757 p->ifa_flags & IFF_LINK1)
1758 memcpy(&n->addr.v.a.mask,
1759 &p->addr.v.a.mask,
1760 sizeof(struct pf_addr));
1761 else
1762 set_ipmask(n, 32);
1763 } else
1764 set_ipmask(n, 128);
1765 }
1766 n->ifindex = p->ifindex;
1767 n->ifname = strdup(p->ifname);
1768
1769 n->next = NULL;
1770 n->tail = n;
1771 if (h == NULL)
1772 h = n;
1773 else {
1774 h->tail->next = n;
1775 h->tail = n;
1776 }
1777 }
1778 return (h);
1779 }
1780
1781 int
ifa_skip_if(const char * filter,struct node_host * p)1782 ifa_skip_if(const char *filter, struct node_host *p)
1783 {
1784 int n;
1785
1786 if (p->af != AF_INET && p->af != AF_INET6)
1787 return (1);
1788 if (filter == NULL || !*filter)
1789 return (0);
1790 if (!strcmp(p->ifname, filter))
1791 return (0); /* exact match */
1792 n = strlen(filter);
1793 if (n < 1 || n >= IFNAMSIZ)
1794 return (1); /* sanity check */
1795 if (filter[n-1] >= '0' && filter[n-1] <= '9')
1796 return (1); /* only do exact match in that case */
1797 if (strncmp(p->ifname, filter, n))
1798 return (1); /* prefix doesn't match */
1799 return (p->ifname[n] < '0' || p->ifname[n] > '9');
1800 }
1801
1802
1803 struct node_host *
host(const char * s)1804 host(const char *s)
1805 {
1806 struct node_host *h = NULL;
1807 int mask, v4mask, v6mask, cont = 1;
1808 char *p, *q, *ps;
1809
1810 if ((p = strrchr(s, '/')) != NULL) {
1811 mask = strtol(p+1, &q, 0);
1812 if (!q || *q || mask > 128 || q == (p+1)) {
1813 fprintf(stderr, "invalid netmask '%s'\n", p);
1814 return (NULL);
1815 }
1816 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
1817 err(1, "host: malloc");
1818 strlcpy(ps, s, strlen(s) - strlen(p) + 1);
1819 v4mask = v6mask = mask;
1820 } else {
1821 if ((ps = strdup(s)) == NULL)
1822 err(1, "host: strdup");
1823 v4mask = 32;
1824 v6mask = 128;
1825 mask = -1;
1826 }
1827
1828 /* IPv4 address? */
1829 if (cont && (h = host_v4(s, mask)) != NULL)
1830 cont = 0;
1831
1832 /* IPv6 address? */
1833 if (cont && (h = host_v6(ps, v6mask)) != NULL)
1834 cont = 0;
1835
1836 /* interface with this name exists? */
1837 /* expensive with thousands of interfaces - prioritze IPv4/6 check */
1838 if (cont && (h = host_if(ps, mask, &cont)) != NULL)
1839 cont = 0;
1840
1841 /* dns lookup */
1842 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL)
1843 cont = 0;
1844 free(ps);
1845
1846 if (h == NULL || cont == 1) {
1847 fprintf(stderr, "no IP address found for %s\n", s);
1848 return (NULL);
1849 }
1850 return (h);
1851 }
1852
1853 struct node_host *
host_if(const char * s,int mask,int * cont)1854 host_if(const char *s, int mask, int *cont)
1855 {
1856 struct node_host *n, *h = NULL;
1857 char *p, *ps;
1858 int flags = 0;
1859
1860 if ((ps = strdup(s)) == NULL)
1861 err(1, "host_if: strdup");
1862 while ((p = strrchr(ps, ':')) != NULL) {
1863 if (!strcmp(p+1, "network"))
1864 flags |= PFI_AFLAG_NETWORK;
1865 else if (!strcmp(p+1, "broadcast"))
1866 flags |= PFI_AFLAG_BROADCAST;
1867 else if (!strcmp(p+1, "peer"))
1868 flags |= PFI_AFLAG_PEER;
1869 else if (!strcmp(p+1, "0"))
1870 flags |= PFI_AFLAG_NOALIAS;
1871 else {
1872 free(ps);
1873 return (NULL);
1874 }
1875 *p = '\0';
1876 *cont = 0;
1877 }
1878 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
1879 fprintf(stderr, "illegal combination of interface modifiers\n");
1880 free(ps);
1881 return (NULL);
1882 }
1883 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
1884 fprintf(stderr, "network or broadcast lookup, but "
1885 "extra netmask given\n");
1886 free(ps);
1887 return (NULL);
1888 }
1889 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) {
1890 /* interface with this name exists */
1891 h = ifa_lookup(ps, flags);
1892 for (n = h; n != NULL && mask > -1; n = n->next)
1893 set_ipmask(n, mask);
1894 }
1895
1896 free(ps);
1897 return (h);
1898 }
1899
1900 struct node_host *
host_v4(const char * s,int mask)1901 host_v4(const char *s, int mask)
1902 {
1903 struct node_host *h = NULL;
1904 struct in_addr ina;
1905 int bits = 32;
1906
1907 memset(&ina, 0, sizeof(struct in_addr));
1908 if (strrchr(s, '/') != NULL) {
1909 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1)
1910 return (NULL);
1911 } else {
1912 if (inet_pton(AF_INET, s, &ina) != 1)
1913 return (NULL);
1914 }
1915
1916 h = calloc(1, sizeof(struct node_host));
1917 if (h == NULL)
1918 err(1, "address: calloc");
1919 h->ifname = NULL;
1920 h->af = AF_INET;
1921 h->addr.v.a.addr.addr32[0] = ina.s_addr;
1922 set_ipmask(h, bits);
1923 h->next = NULL;
1924 h->tail = h;
1925
1926 return (h);
1927 }
1928
1929 struct node_host *
host_v6(const char * s,int mask)1930 host_v6(const char *s, int mask)
1931 {
1932 struct addrinfo hints, *res;
1933 struct node_host *h = NULL;
1934
1935 memset(&hints, 0, sizeof(hints));
1936 hints.ai_family = AF_INET6;
1937 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1938 hints.ai_flags = AI_NUMERICHOST;
1939 if (getaddrinfo(s, "0", &hints, &res) == 0) {
1940 h = calloc(1, sizeof(struct node_host));
1941 if (h == NULL)
1942 err(1, "address: calloc");
1943 h->ifname = NULL;
1944 h->af = AF_INET6;
1945 memcpy(&h->addr.v.a.addr,
1946 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
1947 sizeof(h->addr.v.a.addr));
1948 h->ifindex =
1949 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1950 set_ipmask(h, mask);
1951 freeaddrinfo(res);
1952 h->next = NULL;
1953 h->tail = h;
1954 }
1955
1956 return (h);
1957 }
1958
1959 struct node_host *
host_dns(const char * s,int v4mask,int v6mask)1960 host_dns(const char *s, int v4mask, int v6mask)
1961 {
1962 struct addrinfo hints, *res0, *res;
1963 struct node_host *n, *h = NULL;
1964 int error, noalias = 0;
1965 int got4 = 0, got6 = 0;
1966 char *p, *ps;
1967
1968 if ((ps = strdup(s)) == NULL)
1969 err(1, "host_dns: strdup");
1970 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
1971 noalias = 1;
1972 *p = '\0';
1973 }
1974 memset(&hints, 0, sizeof(hints));
1975 hints.ai_family = PF_UNSPEC;
1976 hints.ai_socktype = SOCK_STREAM; /* DUMMY */
1977 error = getaddrinfo(ps, NULL, &hints, &res0);
1978 if (error) {
1979 free(ps);
1980 return (h);
1981 }
1982
1983 for (res = res0; res; res = res->ai_next) {
1984 if (res->ai_family != AF_INET &&
1985 res->ai_family != AF_INET6)
1986 continue;
1987 if (noalias) {
1988 if (res->ai_family == AF_INET) {
1989 if (got4)
1990 continue;
1991 got4 = 1;
1992 } else {
1993 if (got6)
1994 continue;
1995 got6 = 1;
1996 }
1997 }
1998 n = calloc(1, sizeof(struct node_host));
1999 if (n == NULL)
2000 err(1, "host_dns: calloc");
2001 n->ifname = NULL;
2002 n->af = res->ai_family;
2003 if (res->ai_family == AF_INET) {
2004 memcpy(&n->addr.v.a.addr,
2005 &((struct sockaddr_in *)
2006 res->ai_addr)->sin_addr.s_addr,
2007 sizeof(struct in_addr));
2008 set_ipmask(n, v4mask);
2009 } else {
2010 memcpy(&n->addr.v.a.addr,
2011 &((struct sockaddr_in6 *)
2012 res->ai_addr)->sin6_addr.s6_addr,
2013 sizeof(struct in6_addr));
2014 n->ifindex =
2015 ((struct sockaddr_in6 *)
2016 res->ai_addr)->sin6_scope_id;
2017 set_ipmask(n, v6mask);
2018 }
2019 n->next = NULL;
2020 n->tail = n;
2021 if (h == NULL)
2022 h = n;
2023 else {
2024 h->tail->next = n;
2025 h->tail = n;
2026 }
2027 }
2028 freeaddrinfo(res0);
2029 free(ps);
2030
2031 return (h);
2032 }
2033
2034 /*
2035 * convert a hostname to a list of addresses and put them in the given buffer.
2036 * test:
2037 * if set to 1, only simple addresses are accepted (no netblock, no "!").
2038 */
2039 int
append_addr(struct pfr_buffer * b,char * s,int test)2040 append_addr(struct pfr_buffer *b, char *s, int test)
2041 {
2042 char *r;
2043 struct node_host *h, *n;
2044 int rv, not = 0;
2045
2046 for (r = s; *r == '!'; r++)
2047 not = !not;
2048 if ((n = host(r)) == NULL) {
2049 errno = 0;
2050 return (-1);
2051 }
2052 rv = append_addr_host(b, n, test, not);
2053 do {
2054 h = n;
2055 n = n->next;
2056 free(h);
2057 } while (n != NULL);
2058 return (rv);
2059 }
2060
2061 /*
2062 * same as previous function, but with a pre-parsed input and the ability
2063 * to "negate" the result. Does not free the node_host list.
2064 * not:
2065 * setting it to 1 is equivalent to adding "!" in front of parameter s.
2066 */
2067 int
append_addr_host(struct pfr_buffer * b,struct node_host * n,int test,int not)2068 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
2069 {
2070 int bits;
2071 struct pfr_addr addr;
2072
2073 do {
2074 bzero(&addr, sizeof(addr));
2075 addr.pfra_not = n->not ^ not;
2076 addr.pfra_af = n->af;
2077 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af);
2078 switch (n->af) {
2079 case AF_INET:
2080 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
2081 bits = 32;
2082 break;
2083 case AF_INET6:
2084 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
2085 sizeof(struct in6_addr));
2086 bits = 128;
2087 break;
2088 default:
2089 errno = EINVAL;
2090 return (-1);
2091 }
2092 if ((test && (not || addr.pfra_net != bits)) ||
2093 addr.pfra_net > bits) {
2094 errno = EINVAL;
2095 return (-1);
2096 }
2097 if (pfr_buf_add(b, &addr))
2098 return (-1);
2099 } while ((n = n->next) != NULL);
2100
2101 return (0);
2102 }
2103
2104 int
pfctl_add_trans(struct pfr_buffer * buf,int rs_num,const char * anchor)2105 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor)
2106 {
2107 struct pfioc_trans_e trans;
2108
2109 bzero(&trans, sizeof(trans));
2110 trans.rs_num = rs_num;
2111 if (strlcpy(trans.anchor, anchor,
2112 sizeof(trans.anchor)) >= sizeof(trans.anchor))
2113 errx(1, "pfctl_add_trans: strlcpy");
2114
2115 return pfr_buf_add(buf, &trans);
2116 }
2117
2118 u_int32_t
pfctl_get_ticket(struct pfr_buffer * buf,int rs_num,const char * anchor)2119 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor)
2120 {
2121 struct pfioc_trans_e *p;
2122
2123 PFRB_FOREACH(p, buf)
2124 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor))
2125 return (p->ticket);
2126 errx(1, "pfctl_get_ticket: assertion failed");
2127 }
2128
2129 int
pfctl_trans(int dev,struct pfr_buffer * buf,u_long cmd,int from)2130 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
2131 {
2132 struct pfioc_trans trans;
2133
2134 bzero(&trans, sizeof(trans));
2135 trans.size = buf->pfrb_size - from;
2136 trans.esize = sizeof(struct pfioc_trans_e);
2137 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
2138 return ioctl(dev, cmd, &trans);
2139 }
2140