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, id_t, id_t, const char *);
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);
78 struct node_host *host_ip(const char *, int);
79 struct node_host *host_dns(const char *, int, int);
80
81 const char * const tcpflags = "FSRPAUEWe";
82
83 static const struct icmptypeent icmp_type[] = {
84 { "echoreq", ICMP_ECHO },
85 { "echorep", ICMP_ECHOREPLY },
86 { "unreach", ICMP_UNREACH },
87 { "squench", ICMP_SOURCEQUENCH },
88 { "redir", ICMP_REDIRECT },
89 { "althost", ICMP_ALTHOSTADDR },
90 { "routeradv", ICMP_ROUTERADVERT },
91 { "routersol", ICMP_ROUTERSOLICIT },
92 { "timex", ICMP_TIMXCEED },
93 { "paramprob", ICMP_PARAMPROB },
94 { "timereq", ICMP_TSTAMP },
95 { "timerep", ICMP_TSTAMPREPLY },
96 { "inforeq", ICMP_IREQ },
97 { "inforep", ICMP_IREQREPLY },
98 { "maskreq", ICMP_MASKREQ },
99 { "maskrep", ICMP_MASKREPLY },
100 { "trace", ICMP_TRACEROUTE },
101 { "dataconv", ICMP_DATACONVERR },
102 { "mobredir", ICMP_MOBILE_REDIRECT },
103 { "ipv6-where", ICMP_IPV6_WHEREAREYOU },
104 { "ipv6-here", ICMP_IPV6_IAMHERE },
105 { "mobregreq", ICMP_MOBILE_REGREQUEST },
106 { "mobregrep", ICMP_MOBILE_REGREPLY },
107 { "skip", ICMP_SKIP },
108 { "photuris", ICMP_PHOTURIS }
109 };
110
111 static const struct icmptypeent icmp6_type[] = {
112 { "unreach", ICMP6_DST_UNREACH },
113 { "toobig", ICMP6_PACKET_TOO_BIG },
114 { "timex", ICMP6_TIME_EXCEEDED },
115 { "paramprob", ICMP6_PARAM_PROB },
116 { "echoreq", ICMP6_ECHO_REQUEST },
117 { "echorep", ICMP6_ECHO_REPLY },
118 { "groupqry", ICMP6_MEMBERSHIP_QUERY },
119 { "listqry", MLD_LISTENER_QUERY },
120 { "grouprep", ICMP6_MEMBERSHIP_REPORT },
121 { "listenrep", MLD_LISTENER_REPORT },
122 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION },
123 { "listendone", MLD_LISTENER_DONE },
124 { "routersol", ND_ROUTER_SOLICIT },
125 { "routeradv", ND_ROUTER_ADVERT },
126 { "neighbrsol", ND_NEIGHBOR_SOLICIT },
127 { "neighbradv", ND_NEIGHBOR_ADVERT },
128 { "redir", ND_REDIRECT },
129 { "routrrenum", ICMP6_ROUTER_RENUMBERING },
130 { "wrureq", ICMP6_WRUREQUEST },
131 { "wrurep", ICMP6_WRUREPLY },
132 { "fqdnreq", ICMP6_FQDN_QUERY },
133 { "fqdnrep", ICMP6_FQDN_REPLY },
134 { "niqry", ICMP6_NI_QUERY },
135 { "nirep", ICMP6_NI_REPLY },
136 { "mtraceresp", MLD_MTRACE_RESP },
137 { "mtrace", MLD_MTRACE },
138 { "listenrepv2", MLDV2_LISTENER_REPORT },
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 void
copy_satopfaddr(struct pf_addr * pfa,struct sockaddr * sa)232 copy_satopfaddr(struct pf_addr *pfa, struct sockaddr *sa)
233 {
234 if (sa->sa_family == AF_INET6)
235 pfa->v6 = ((struct sockaddr_in6 *)sa)->sin6_addr;
236 else if (sa->sa_family == AF_INET)
237 pfa->v4 = ((struct sockaddr_in *)sa)->sin_addr;
238 else
239 warnx("unhandled af %d", sa->sa_family);
240 }
241
242 const struct icmptypeent *
geticmptypebynumber(u_int8_t type,sa_family_t af)243 geticmptypebynumber(u_int8_t type, sa_family_t af)
244 {
245 unsigned int i;
246
247 if (af != AF_INET6) {
248 for (i=0; i < nitems(icmp_type); i++) {
249 if (type == icmp_type[i].type)
250 return (&icmp_type[i]);
251 }
252 } else {
253 for (i=0; i < nitems(icmp6_type); i++) {
254 if (type == icmp6_type[i].type)
255 return (&icmp6_type[i]);
256 }
257 }
258 return (NULL);
259 }
260
261 const struct icmptypeent *
geticmptypebyname(char * w,sa_family_t af)262 geticmptypebyname(char *w, sa_family_t af)
263 {
264 unsigned int i;
265
266 if (af != AF_INET6) {
267 for (i=0; i < nitems(icmp_type); i++) {
268 if (!strcmp(w, icmp_type[i].name))
269 return (&icmp_type[i]);
270 }
271 } else {
272 for (i=0; i < nitems(icmp6_type); i++) {
273 if (!strcmp(w, icmp6_type[i].name))
274 return (&icmp6_type[i]);
275 }
276 }
277 return (NULL);
278 }
279
280 const struct icmpcodeent *
geticmpcodebynumber(u_int8_t type,u_int8_t code,sa_family_t af)281 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af)
282 {
283 unsigned int i;
284
285 if (af != AF_INET6) {
286 for (i=0; i < nitems(icmp_code); i++) {
287 if (type == icmp_code[i].type &&
288 code == icmp_code[i].code)
289 return (&icmp_code[i]);
290 }
291 } else {
292 for (i=0; i < nitems(icmp6_code); i++) {
293 if (type == icmp6_code[i].type &&
294 code == icmp6_code[i].code)
295 return (&icmp6_code[i]);
296 }
297 }
298 return (NULL);
299 }
300
301 const struct icmpcodeent *
geticmpcodebyname(u_long type,char * w,sa_family_t af)302 geticmpcodebyname(u_long type, char *w, sa_family_t af)
303 {
304 unsigned int i;
305
306 if (af != AF_INET6) {
307 for (i=0; i < nitems(icmp_code); i++) {
308 if (type == icmp_code[i].type &&
309 !strcmp(w, icmp_code[i].name))
310 return (&icmp_code[i]);
311 }
312 } else {
313 for (i=0; i < nitems(icmp6_code); i++) {
314 if (type == icmp6_code[i].type &&
315 !strcmp(w, icmp6_code[i].name))
316 return (&icmp6_code[i]);
317 }
318 }
319 return (NULL);
320 }
321
322 void
print_op(u_int8_t op,const char * a1,const char * a2)323 print_op(u_int8_t op, const char *a1, const char *a2)
324 {
325 if (op == PF_OP_IRG)
326 printf(" %s >< %s", a1, a2);
327 else if (op == PF_OP_XRG)
328 printf(" %s <> %s", a1, a2);
329 else if (op == PF_OP_EQ)
330 printf(" = %s", a1);
331 else if (op == PF_OP_NE)
332 printf(" != %s", a1);
333 else if (op == PF_OP_LT)
334 printf(" < %s", a1);
335 else if (op == PF_OP_LE)
336 printf(" <= %s", a1);
337 else if (op == PF_OP_GT)
338 printf(" > %s", a1);
339 else if (op == PF_OP_GE)
340 printf(" >= %s", a1);
341 else if (op == PF_OP_RRG)
342 printf(" %s:%s", a1, a2);
343 }
344
345 void
print_port(u_int8_t op,u_int16_t p1,u_int16_t p2,const char * proto,int numeric)346 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric)
347 {
348 char a1[6], a2[6];
349 struct servent *s;
350
351 if (!numeric)
352 s = getservbyport(p1, proto);
353 else
354 s = NULL;
355 p1 = ntohs(p1);
356 p2 = ntohs(p2);
357 snprintf(a1, sizeof(a1), "%u", p1);
358 snprintf(a2, sizeof(a2), "%u", p2);
359 printf(" port");
360 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE))
361 print_op(op, s->s_name, a2);
362 else
363 print_op(op, a1, a2);
364 }
365
366 void
print_ugid(u_int8_t op,id_t i1,id_t i2,const char * t)367 print_ugid(u_int8_t op, id_t i1, id_t i2, const char *t)
368 {
369 char a1[11], a2[11];
370
371 snprintf(a1, sizeof(a1), "%ju", (uintmax_t)i1);
372 snprintf(a2, sizeof(a2), "%ju", (uintmax_t)i2);
373 printf(" %s", t);
374 if (i1 == -1 && (op == PF_OP_EQ || op == PF_OP_NE))
375 print_op(op, "unknown", a2);
376 else
377 print_op(op, a1, a2);
378 }
379
380 void
print_flags(uint16_t f)381 print_flags(uint16_t f)
382 {
383 int i;
384
385 for (i = 0; tcpflags[i]; ++i)
386 if (f & (1 << i))
387 printf("%c", tcpflags[i]);
388 }
389
390 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)391 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst,
392 sa_family_t af, u_int8_t proto, int verbose, int numeric)
393 {
394 char buf[PF_OSFP_LEN*3];
395 if (src->addr.type == PF_ADDR_ADDRMASK &&
396 dst->addr.type == PF_ADDR_ADDRMASK &&
397 PF_AZERO(&src->addr.v.a.addr, AF_INET6) &&
398 PF_AZERO(&src->addr.v.a.mask, AF_INET6) &&
399 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) &&
400 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) &&
401 !src->neg && !dst->neg &&
402 !src->port_op && !dst->port_op &&
403 osfp == PF_OSFP_ANY)
404 printf(" all");
405 else {
406 printf(" from ");
407 if (src->neg)
408 printf("! ");
409 print_addr(&src->addr, af, verbose);
410 if (src->port_op)
411 print_port(src->port_op, src->port[0],
412 src->port[1],
413 proto == IPPROTO_TCP ? "tcp" : "udp",
414 numeric);
415 if (osfp != PF_OSFP_ANY)
416 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf,
417 sizeof(buf)));
418
419 printf(" to ");
420 if (dst->neg)
421 printf("! ");
422 print_addr(&dst->addr, af, verbose);
423 if (dst->port_op)
424 print_port(dst->port_op, dst->port[0],
425 dst->port[1],
426 proto == IPPROTO_TCP ? "tcp" : "udp",
427 numeric);
428 }
429 }
430
431 void
print_pool(struct pfctl_pool * pool,u_int16_t p1,u_int16_t p2,int id)432 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2, int id)
433 {
434 struct pfctl_pooladdr *pooladdr;
435
436 if ((TAILQ_FIRST(&pool->list) != NULL) &&
437 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
438 printf("{ ");
439 TAILQ_FOREACH(pooladdr, &pool->list, entries){
440 switch (id) {
441 case PF_NAT:
442 case PF_RDR:
443 case PF_BINAT:
444 print_addr(&pooladdr->addr, pooladdr->af, 0);
445 break;
446 case PF_PASS:
447 case PF_MATCH:
448 if (PF_AZERO(&pooladdr->addr.v.a.addr, pooladdr->af))
449 printf("%s", pooladdr->ifname);
450 else {
451 printf("(%s ", pooladdr->ifname);
452 print_addr(&pooladdr->addr, pooladdr->af, 0);
453 printf(")");
454 }
455 break;
456 default:
457 break;
458 }
459 if (TAILQ_NEXT(pooladdr, entries) != NULL)
460 printf(", ");
461 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
462 printf(" }");
463 }
464 switch (id) {
465 case PF_NAT:
466 if ((p1 != PF_NAT_PROXY_PORT_LOW ||
467 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) {
468 if (p1 == p2)
469 printf(" port %u", p1);
470 else
471 printf(" port %u:%u", p1, p2);
472 }
473 break;
474 case PF_RDR:
475 if (p1) {
476 printf(" port %u", p1);
477 if (p2 && (p2 != p1))
478 printf(":%u", p2);
479 }
480 break;
481 default:
482 break;
483 }
484 switch (pool->opts & PF_POOL_TYPEMASK) {
485 case PF_POOL_NONE:
486 break;
487 case PF_POOL_BITMASK:
488 printf(" bitmask");
489 break;
490 case PF_POOL_RANDOM:
491 printf(" random");
492 break;
493 case PF_POOL_SRCHASH:
494 printf(" source-hash 0x%08x%08x%08x%08x",
495 pool->key.key32[0], pool->key.key32[1],
496 pool->key.key32[2], pool->key.key32[3]);
497 break;
498 case PF_POOL_ROUNDROBIN:
499 printf(" round-robin");
500 break;
501 }
502 if (pool->opts & PF_POOL_STICKYADDR)
503 printf(" sticky-address");
504 if (pool->opts & PF_POOL_ENDPI)
505 printf(" endpoint-independent");
506 if (id == PF_NAT && p1 == 0 && p2 == 0)
507 printf(" static-port");
508 if (pool->mape.offset > 0)
509 printf(" map-e-portset %u/%u/%u",
510 pool->mape.offset, pool->mape.psidlen, pool->mape.psid);
511 if (pool->opts & PF_POOL_IPV6NH)
512 printf(" prefer-ipv6-nexthop");
513 }
514
515 void
print_status(struct pfctl_status * s,struct pfctl_syncookies * cookies,int opts)516 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts)
517 {
518 struct pfctl_status_counter *c;
519 char statline[80], *running;
520 time_t runtime;
521 int i;
522 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1];
523 static const char hex[] = "0123456789abcdef";
524
525 runtime = time(NULL) - s->since;
526 running = s->running ? "Enabled" : "Disabled";
527
528 if (s->since) {
529 unsigned int sec, min, hrs;
530 time_t day = runtime;
531
532 sec = day % 60;
533 day /= 60;
534 min = day % 60;
535 day /= 60;
536 hrs = day % 24;
537 day /= 24;
538 snprintf(statline, sizeof(statline),
539 "Status: %s for %lld days %.2u:%.2u:%.2u",
540 running, (long long)day, hrs, min, sec);
541 } else
542 snprintf(statline, sizeof(statline), "Status: %s", running);
543 printf("%-44s", statline);
544 switch (s->debug) {
545 case PF_DEBUG_NONE:
546 printf("%15s\n\n", "Debug: None");
547 break;
548 case PF_DEBUG_URGENT:
549 printf("%15s\n\n", "Debug: Urgent");
550 break;
551 case PF_DEBUG_MISC:
552 printf("%15s\n\n", "Debug: Misc");
553 break;
554 case PF_DEBUG_NOISY:
555 printf("%15s\n\n", "Debug: Loud");
556 break;
557 }
558
559 if (opts & PF_OPT_VERBOSE) {
560 printf("Hostid: 0x%08x\n", s->hostid);
561
562 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) {
563 buf[i + i] = hex[s->pf_chksum[i] >> 4];
564 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f];
565 }
566 buf[i + i] = '\0';
567 printf("Checksum: 0x%s\n\n", buf);
568 }
569
570 if (s->ifname[0] != 0) {
571 printf("Interface Stats for %-16s %5s %16s\n",
572 s->ifname, "IPv4", "IPv6");
573 printf(" %-25s %14llu %16llu\n", "Bytes In",
574 (unsigned long long)s->bcounters[0][0],
575 (unsigned long long)s->bcounters[1][0]);
576 printf(" %-25s %14llu %16llu\n", "Bytes Out",
577 (unsigned long long)s->bcounters[0][1],
578 (unsigned long long)s->bcounters[1][1]);
579 printf(" Packets In\n");
580 printf(" %-23s %14llu %16llu\n", "Passed",
581 (unsigned long long)s->pcounters[0][0][PF_PASS],
582 (unsigned long long)s->pcounters[1][0][PF_PASS]);
583 printf(" %-23s %14llu %16llu\n", "Blocked",
584 (unsigned long long)s->pcounters[0][0][PF_DROP],
585 (unsigned long long)s->pcounters[1][0][PF_DROP]);
586 printf(" Packets Out\n");
587 printf(" %-23s %14llu %16llu\n", "Passed",
588 (unsigned long long)s->pcounters[0][1][PF_PASS],
589 (unsigned long long)s->pcounters[1][1][PF_PASS]);
590 printf(" %-23s %14llu %16llu\n\n", "Blocked",
591 (unsigned long long)s->pcounters[0][1][PF_DROP],
592 (unsigned long long)s->pcounters[1][1][PF_DROP]);
593 }
594 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
595 printf(" %-25s %14ju %14s\n", "current entries", s->states, "");
596 TAILQ_FOREACH(c, &s->fcounters, 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 if (opts & PF_OPT_VERBOSE) {
605 printf("Source Tracking Table\n");
606 printf(" %-25s %14ju %14s\n", "current entries",
607 s->src_nodes, "");
608 TAILQ_FOREACH(c, &s->scounters, entry) {
609 printf(" %-25s %14ju ", c->name, c->counter);
610 if (runtime > 0)
611 printf("%14.1f/s\n",
612 (double)c->counter / (double)runtime);
613 else
614 printf("%14s\n", "");
615 }
616 }
617 printf("Counters\n");
618 TAILQ_FOREACH(c, &s->counters, entry) {
619 printf(" %-25s %14ju ", c->name, c->counter);
620 if (runtime > 0)
621 printf("%14.1f/s\n",
622 (double)c->counter / (double)runtime);
623 else
624 printf("%14s\n", "");
625 }
626 if (opts & PF_OPT_VERBOSE) {
627 printf("Limit Counters\n");
628 TAILQ_FOREACH(c, &s->lcounters, entry) {
629 printf(" %-25s %14ju ", c->name, c->counter);
630 if (runtime > 0)
631 printf("%14.1f/s\n",
632 (double)c->counter / (double)runtime);
633 else
634 printf("%14s\n", "");
635 }
636
637 printf("Syncookies\n");
638 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE);
639 printf(" %-25s %s\n", "mode",
640 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]);
641 printf(" %-25s %s\n", "active",
642 s->syncookies_active ? "active" : "inactive");
643 if (opts & PF_OPT_VERBOSE2) {
644 printf(" %-25s %d %%\n", "highwater", cookies->highwater);
645 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater);
646 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states);
647 }
648 printf("Reassemble %24s %s\n",
649 s->reass & PF_REASS_ENABLED ? "yes" : "no",
650 s->reass & PF_REASS_NODF ? "no-df" : ""
651 );
652 }
653 }
654
655 void
print_running(struct pfctl_status * status)656 print_running(struct pfctl_status *status)
657 {
658 printf("%s\n", status->running ? "Enabled" : "Disabled");
659 }
660
661 void
print_src_node(struct pfctl_src_node * sn,int opts)662 print_src_node(struct pfctl_src_node *sn, int opts)
663 {
664 struct pf_addr_wrap aw;
665 uint64_t min, sec;
666 const char *sn_type_names[] = PF_SN_TYPE_NAMES;
667
668 memset(&aw, 0, sizeof(aw));
669 if (sn->af == AF_INET)
670 aw.v.a.mask.addr32[0] = 0xffffffff;
671 else
672 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
673
674 aw.v.a.addr = sn->addr;
675 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
676 printf(" -> ");
677 aw.v.a.addr = sn->raddr;
678 print_addr(&aw, sn->raf, opts & PF_OPT_VERBOSE2);
679 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states,
680 sn->conn, sn->conn_rate.count / 1000,
681 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds);
682 if (opts & PF_OPT_VERBOSE) {
683 sec = sn->creation % 60;
684 sn->creation /= 60;
685 min = sn->creation % 60;
686 sn->creation /= 60;
687 printf(" age %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64,
688 sn->creation, min, sec);
689 if (sn->states == 0) {
690 sec = sn->expire % 60;
691 sn->expire /= 60;
692 min = sn->expire % 60;
693 sn->expire /= 60;
694 printf(", expires in %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64,
695 sn->expire, min, sec);
696 }
697 printf(", %" PRIu64 " pkts, %" PRIu64 " bytes",
698 sn->packets[0] + sn->packets[1],
699 sn->bytes[0] + sn->bytes[1]);
700 switch (sn->ruletype) {
701 case PF_NAT:
702 if (sn->rule != -1)
703 printf(", nat rule %u", sn->rule);
704 break;
705 case PF_RDR:
706 if (sn->rule != -1)
707 printf(", rdr rule %u", sn->rule);
708 break;
709 case PF_PASS:
710 case PF_MATCH:
711 if (sn->rule != -1)
712 printf(", filter rule %u", sn->rule);
713 break;
714 }
715 printf(", %s", sn_type_names[sn->type]);
716 printf("\n");
717 }
718 }
719
720 static void
print_eth_addr(const struct pfctl_eth_addr * a)721 print_eth_addr(const struct pfctl_eth_addr *a)
722 {
723 int i, masklen = ETHER_ADDR_LEN * 8;
724 bool seen_unset = false;
725
726 for (i = 0; i < ETHER_ADDR_LEN; i++) {
727 if (a->addr[i] != 0)
728 break;
729 }
730
731 /* Unset, so don't print anything. */
732 if (i == ETHER_ADDR_LEN)
733 return;
734
735 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "",
736 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4],
737 a->addr[5]);
738
739 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) {
740 bool isset = a->mask[i / 8] & (1 << i % 8);
741
742 if (! seen_unset) {
743 if (isset)
744 continue;
745 seen_unset = true;
746 masklen = i;
747 } else {
748 /* Not actually a continuous mask, so print the whole
749 * thing. */
750 if (isset)
751 break;
752 continue;
753 }
754 }
755
756 if (masklen == (ETHER_ADDR_LEN * 8))
757 return;
758
759 if (i == (ETHER_ADDR_LEN * 8)) {
760 printf("/%d", masklen);
761 return;
762 }
763
764 printf("&%02x:%02x:%02x:%02x:%02x:%02x",
765 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4],
766 a->mask[5]);
767 }
768
769 void
print_eth_rule(struct pfctl_eth_rule * r,const char * anchor_call,int rule_numbers)770 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call,
771 int rule_numbers)
772 {
773 static const char *actiontypes[] = { "pass", "block", "", "", "", "",
774 "", "", "", "", "", "", "match" };
775
776 int i;
777
778 if (rule_numbers)
779 printf("@%u ", r->nr);
780
781 printf("ether ");
782 if (anchor_call[0]) {
783 if (anchor_call[0] == '_') {
784 printf("anchor");
785 } else
786 printf("anchor \"%s\"", anchor_call);
787 } else {
788 printf("%s", actiontypes[r->action]);
789 }
790 if (r->direction == PF_IN)
791 printf(" in");
792 else if (r->direction == PF_OUT)
793 printf(" out");
794
795 if (r->quick)
796 printf(" quick");
797 if (r->ifname[0]) {
798 if (r->ifnot)
799 printf(" on ! %s", r->ifname);
800 else
801 printf(" on %s", r->ifname);
802 }
803 if (r->bridge_to[0])
804 printf(" bridge-to %s", r->bridge_to);
805 if (r->proto)
806 printf(" proto 0x%04x", r->proto);
807
808 if (r->src.isset) {
809 printf(" from ");
810 print_eth_addr(&r->src);
811 }
812 if (r->dst.isset) {
813 printf(" to ");
814 print_eth_addr(&r->dst);
815 }
816 printf(" l3");
817 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst,
818 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0,
819 0, 0);
820
821 i = 0;
822 while (r->label[i][0])
823 printf(" label \"%s\"", r->label[i++]);
824 if (r->ridentifier)
825 printf(" ridentifier %u", r->ridentifier);
826
827 if (r->qname[0])
828 printf(" queue %s", r->qname);
829 if (r->tagname[0])
830 printf(" tag %s", r->tagname);
831 if (r->match_tagname[0]) {
832 if (r->match_tag_not)
833 printf(" !");
834 printf(" tagged %s", r->match_tagname);
835 }
836 if (r->dnpipe)
837 printf(" %s %d",
838 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
839 r->dnpipe);
840 }
841
842 void
print_rule(struct pfctl_rule * r,const char * anchor_call,int verbose,int numeric)843 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric)
844 {
845 static const char *actiontypes[] = { "pass", "block", "scrub",
846 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr",
847 "", "", "match"};
848 static const char *anchortypes[] = { "anchor", "anchor", "anchor",
849 "anchor", "nat-anchor", "nat-anchor", "binat-anchor",
850 "binat-anchor", "rdr-anchor", "rdr-anchor" };
851 int i, ropts;
852 char *p;
853
854 if (verbose)
855 printf("@%d ", r->nr);
856 if (r->action == PF_MATCH)
857 printf("match");
858 else if (r->action > PF_NORDR)
859 printf("action(%d)", r->action);
860 else if (anchor_call[0]) {
861 p = strrchr(anchor_call, '/');
862 if (p ? p[1] == '_' : anchor_call[0] == '_')
863 printf("%s", anchortypes[r->action]);
864 else
865 printf("%s \"%s\"", anchortypes[r->action],
866 anchor_call);
867 } else {
868 printf("%s", actiontypes[r->action]);
869 if (r->natpass)
870 printf(" pass");
871 }
872 if (r->action == PF_DROP) {
873 if (r->rule_flag & PFRULE_RETURN)
874 printf(" return");
875 else if (r->rule_flag & PFRULE_RETURNRST) {
876 if (!r->return_ttl)
877 printf(" return-rst");
878 else
879 printf(" return-rst(ttl %d)", r->return_ttl);
880 } else if (r->rule_flag & PFRULE_RETURNICMP) {
881 const struct icmpcodeent *ic, *ic6;
882
883 ic = geticmpcodebynumber(r->return_icmp >> 8,
884 r->return_icmp & 255, AF_INET);
885 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
886 r->return_icmp6 & 255, AF_INET6);
887
888 switch (r->af) {
889 case AF_INET:
890 printf(" return-icmp");
891 if (ic == NULL)
892 printf("(%u)", r->return_icmp & 255);
893 else
894 printf("(%s)", ic->name);
895 break;
896 case AF_INET6:
897 printf(" return-icmp6");
898 if (ic6 == NULL)
899 printf("(%u)", r->return_icmp6 & 255);
900 else
901 printf("(%s)", ic6->name);
902 break;
903 default:
904 printf(" return-icmp");
905 if (ic == NULL)
906 printf("(%u, ", r->return_icmp & 255);
907 else
908 printf("(%s, ", ic->name);
909 if (ic6 == NULL)
910 printf("%u)", r->return_icmp6 & 255);
911 else
912 printf("%s)", ic6->name);
913 break;
914 }
915 } else
916 printf(" drop");
917 }
918 if (r->direction == PF_IN)
919 printf(" in");
920 else if (r->direction == PF_OUT)
921 printf(" out");
922 if (r->log) {
923 printf(" log");
924 if (r->log & ~PF_LOG || r->logif) {
925 int count = 0;
926
927 printf(" (");
928 if (r->log & PF_LOG_ALL)
929 printf("%sall", count++ ? ", " : "");
930 if (r->log & PF_LOG_MATCHES)
931 printf("%smatches", count++ ? ", " : "");
932 if (r->log & PF_LOG_USER)
933 printf("%suser", count++ ? ", " : "");
934 if (r->logif)
935 printf("%sto pflog%u", count++ ? ", " : "",
936 r->logif);
937 printf(")");
938 }
939 }
940 if (r->quick)
941 printf(" quick");
942 if (r->ifname[0]) {
943 if (r->ifnot)
944 printf(" on ! %s", r->ifname);
945 else
946 printf(" on %s", r->ifname);
947 }
948 if (r->rt) {
949 if (r->rt == PF_ROUTETO)
950 printf(" route-to");
951 else if (r->rt == PF_REPLYTO)
952 printf(" reply-to");
953 else if (r->rt == PF_DUPTO)
954 printf(" dup-to");
955 printf(" ");
956 print_pool(&r->route, 0, 0, PF_PASS);
957 }
958 if (r->af) {
959 if (r->af == AF_INET)
960 printf(" inet");
961 else
962 printf(" inet6");
963 }
964 if (r->proto) {
965 const char *protoname;
966
967 if ((protoname = pfctl_proto2name(r->proto)) != NULL)
968 printf(" proto %s", protoname);
969 else
970 printf(" proto %u", r->proto);
971 }
972 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto,
973 verbose, numeric);
974 if (r->rcv_ifname[0])
975 printf(" %sreceived-on %s", r->rcvifnot ? "!" : "",
976 r->rcv_ifname);
977 if (r->uid.op)
978 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user");
979 if (r->gid.op)
980 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group");
981 if (r->flags || r->flagset) {
982 printf(" flags ");
983 print_flags(r->flags);
984 printf("/");
985 print_flags(r->flagset);
986 } else if ((r->action == PF_PASS || r->action == PF_MATCH) &&
987 (!r->proto || r->proto == IPPROTO_TCP) &&
988 !(r->rule_flag & PFRULE_FRAGMENT) &&
989 !anchor_call[0] && r->keep_state)
990 printf(" flags any");
991 if (r->type) {
992 const struct icmptypeent *it;
993
994 it = geticmptypebynumber(r->type-1, r->af);
995 if (r->af != AF_INET6)
996 printf(" icmp-type");
997 else
998 printf(" icmp6-type");
999 if (it != NULL)
1000 printf(" %s", it->name);
1001 else
1002 printf(" %u", r->type-1);
1003 if (r->code) {
1004 const struct icmpcodeent *ic;
1005
1006 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
1007 if (ic != NULL)
1008 printf(" code %s", ic->name);
1009 else
1010 printf(" code %u", r->code-1);
1011 }
1012 }
1013 if (r->tos)
1014 printf(" tos 0x%2.2x", r->tos);
1015 if (r->prio)
1016 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio);
1017 if (r->pktrate.limit)
1018 printf(" max-pkt-rate %u/%u", r->pktrate.limit,
1019 r->pktrate.seconds);
1020 if (r->max_pkt_size)
1021 printf( " max-pkt-size %u", r->max_pkt_size);
1022 if (r->scrub_flags & PFSTATE_SETMASK) {
1023 char *comma = "";
1024 printf(" set (");
1025 if (r->scrub_flags & PFSTATE_SETPRIO) {
1026 if (r->set_prio[0] == r->set_prio[1])
1027 printf("%s prio %u", comma, r->set_prio[0]);
1028 else
1029 printf("%s prio(%u, %u)", comma, r->set_prio[0],
1030 r->set_prio[1]);
1031 comma = ",";
1032 }
1033 if (r->scrub_flags & PFSTATE_SETTOS) {
1034 printf("%s tos 0x%2.2x", comma, r->set_tos);
1035 comma = ",";
1036 }
1037 printf(" )");
1038 }
1039 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0])
1040 printf(" no state");
1041 else if (r->keep_state == PF_STATE_NORMAL)
1042 printf(" keep state");
1043 else if (r->keep_state == PF_STATE_MODULATE)
1044 printf(" modulate state");
1045 else if (r->keep_state == PF_STATE_SYNPROXY)
1046 printf(" synproxy state");
1047 if (r->prob) {
1048 char buf[20];
1049
1050 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
1051 for (i = strlen(buf)-1; i > 0; i--) {
1052 if (buf[i] == '0')
1053 buf[i] = '\0';
1054 else {
1055 if (buf[i] == '.')
1056 buf[i] = '\0';
1057 break;
1058 }
1059 }
1060 printf(" probability %s%%", buf);
1061 }
1062 ropts = 0;
1063 if (r->max_states || r->max_src_nodes || r->max_src_states)
1064 ropts = 1;
1065 if (r->rule_flag & PFRULE_NOSYNC)
1066 ropts = 1;
1067 if (r->rule_flag & PFRULE_SRCTRACK)
1068 ropts = 1;
1069 if (r->rule_flag & PFRULE_IFBOUND)
1070 ropts = 1;
1071 if (r->rule_flag & PFRULE_STATESLOPPY)
1072 ropts = 1;
1073 if (r->rule_flag & PFRULE_PFLOW)
1074 ropts = 1;
1075 for (i = 0; !ropts && i < PFTM_MAX; ++i)
1076 if (r->timeout[i])
1077 ropts = 1;
1078 if (ropts) {
1079 printf(" (");
1080 if (r->max_states) {
1081 printf("max %u", r->max_states);
1082 ropts = 0;
1083 }
1084 if (r->rule_flag & PFRULE_NOSYNC) {
1085 if (!ropts)
1086 printf(", ");
1087 printf("no-sync");
1088 ropts = 0;
1089 }
1090 if (r->rule_flag & PFRULE_SRCTRACK) {
1091 if (!ropts)
1092 printf(", ");
1093 printf("source-track");
1094 if (r->rule_flag & PFRULE_RULESRCTRACK)
1095 printf(" rule");
1096 else
1097 printf(" global");
1098 ropts = 0;
1099 }
1100 if (r->max_src_states) {
1101 if (!ropts)
1102 printf(", ");
1103 printf("max-src-states %u", r->max_src_states);
1104 ropts = 0;
1105 }
1106 if (r->max_src_conn) {
1107 if (!ropts)
1108 printf(", ");
1109 printf("max-src-conn %u", r->max_src_conn);
1110 ropts = 0;
1111 }
1112 if (r->max_src_conn_rate.limit) {
1113 if (!ropts)
1114 printf(", ");
1115 printf("max-src-conn-rate %u/%u",
1116 r->max_src_conn_rate.limit,
1117 r->max_src_conn_rate.seconds);
1118 ropts = 0;
1119 }
1120 if (r->max_src_nodes) {
1121 if (!ropts)
1122 printf(", ");
1123 printf("max-src-nodes %u", r->max_src_nodes);
1124 ropts = 0;
1125 }
1126 if (r->overload_tblname[0]) {
1127 if (!ropts)
1128 printf(", ");
1129 printf("overload <%s>", r->overload_tblname);
1130 if (r->flush)
1131 printf(" flush");
1132 if (r->flush & PF_FLUSH_GLOBAL)
1133 printf(" global");
1134 }
1135 if (r->rule_flag & PFRULE_IFBOUND) {
1136 if (!ropts)
1137 printf(", ");
1138 printf("if-bound");
1139 ropts = 0;
1140 }
1141 if (r->rule_flag & PFRULE_STATESLOPPY) {
1142 if (!ropts)
1143 printf(", ");
1144 printf("sloppy");
1145 ropts = 0;
1146 }
1147 if (r->rule_flag & PFRULE_PFLOW) {
1148 if (!ropts)
1149 printf(", ");
1150 printf("pflow");
1151 ropts = 0;
1152 }
1153 for (i = 0; i < PFTM_MAX; ++i)
1154 if (r->timeout[i]) {
1155 int j;
1156
1157 if (!ropts)
1158 printf(", ");
1159 ropts = 0;
1160 for (j = 0; pf_timeouts[j].name != NULL;
1161 ++j)
1162 if (pf_timeouts[j].timeout == i)
1163 break;
1164 printf("%s %u", pf_timeouts[j].name == NULL ?
1165 "inv.timeout" : pf_timeouts[j].name,
1166 r->timeout[i]);
1167 }
1168 printf(")");
1169 }
1170 if (r->allow_opts)
1171 printf(" allow-opts");
1172 if (r->rule_flag & PFRULE_FRAGMENT)
1173 printf(" fragment");
1174 if (r->action == PF_SCRUB) {
1175 /* Scrub flags for old-style scrub. */
1176 if (r->rule_flag & PFRULE_NODF)
1177 printf(" no-df");
1178 if (r->rule_flag & PFRULE_RANDOMID)
1179 printf(" random-id");
1180 if (r->min_ttl)
1181 printf(" min-ttl %d", r->min_ttl);
1182 if (r->max_mss)
1183 printf(" max-mss %d", r->max_mss);
1184 if (r->rule_flag & PFRULE_SET_TOS)
1185 printf(" set-tos 0x%2.2x", r->set_tos);
1186 if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
1187 printf(" reassemble tcp");
1188 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */
1189 printf(" fragment %sreassemble",
1190 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : "");
1191 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) {
1192 /* Scrub actions on normal rules. */
1193 printf(" scrub(");
1194 if (r->scrub_flags & PFSTATE_NODF)
1195 printf(" no-df");
1196 if (r->scrub_flags & PFSTATE_RANDOMID)
1197 printf(" random-id");
1198 if (r->min_ttl)
1199 printf(" min-ttl %d", r->min_ttl);
1200 if (r->scrub_flags & PFSTATE_SETTOS)
1201 printf(" set-tos 0x%2.2x", r->set_tos);
1202 if (r->scrub_flags & PFSTATE_SCRUB_TCP)
1203 printf(" reassemble tcp");
1204 if (r->max_mss)
1205 printf(" max-mss %d", r->max_mss);
1206 printf(")");
1207 }
1208 i = 0;
1209 while (r->label[i][0])
1210 printf(" label \"%s\"", r->label[i++]);
1211 if (r->ridentifier)
1212 printf(" ridentifier %u", r->ridentifier);
1213 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */
1214 if (r->dnrpipe)
1215 printf(" %s(%d, %d)",
1216 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1217 r->dnpipe, r->dnrpipe);
1218 else if (r->dnpipe)
1219 printf(" %s %d",
1220 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1221 r->dnpipe);
1222 if (r->qname[0] && r->pqname[0])
1223 printf(" queue(%s, %s)", r->qname, r->pqname);
1224 else if (r->qname[0])
1225 printf(" queue %s", r->qname);
1226 if (r->tagname[0])
1227 printf(" tag %s", r->tagname);
1228 if (r->match_tagname[0]) {
1229 if (r->match_tag_not)
1230 printf(" !");
1231 printf(" tagged %s", r->match_tagname);
1232 }
1233 if (r->rtableid != -1)
1234 printf(" rtable %u", r->rtableid);
1235 if (r->divert.port) {
1236 #ifdef __FreeBSD__
1237 printf(" divert-to %u", ntohs(r->divert.port));
1238 #else
1239 if (PF_AZERO(&r->divert.addr, r->af)) {
1240 printf(" divert-reply");
1241 } else {
1242 printf(" divert-to ");
1243 print_addr_str(r->af, &r->divert.addr);
1244 printf(" port %u", ntohs(r->divert.port));
1245 }
1246 #endif
1247 }
1248 if (anchor_call[0])
1249 return;
1250 if (r->action == PF_NAT || r->action == PF_BINAT || r->action == PF_RDR) {
1251 printf(" -> ");
1252 print_pool(&r->rdr, r->rdr.proxy_port[0],
1253 r->rdr.proxy_port[1], r->action);
1254 } else {
1255 if (!TAILQ_EMPTY(&r->nat.list)) {
1256 if (r->rule_flag & PFRULE_AFTO) {
1257 printf(" af-to %s from ", r->naf == AF_INET ? "inet" : (r->naf == AF_INET6 ? "inet6" : "? "));
1258 } else {
1259 printf(" nat-to ");
1260 }
1261 print_pool(&r->nat, r->nat.proxy_port[0],
1262 r->nat.proxy_port[1], PF_NAT);
1263 }
1264 if (!TAILQ_EMPTY(&r->rdr.list)) {
1265 if (r->rule_flag & PFRULE_AFTO) {
1266 printf(" to ");
1267 } else {
1268 printf(" rdr-to ");
1269 }
1270 print_pool(&r->rdr, r->rdr.proxy_port[0],
1271 r->rdr.proxy_port[1], PF_RDR);
1272 }
1273 }
1274 }
1275
1276 void
print_tabledef(const char * name,int flags,int addrs,struct node_tinithead * nodes)1277 print_tabledef(const char *name, int flags, int addrs,
1278 struct node_tinithead *nodes)
1279 {
1280 struct node_tinit *ti, *nti;
1281 struct node_host *h;
1282
1283 printf("table <%s>", name);
1284 if (flags & PFR_TFLAG_CONST)
1285 printf(" const");
1286 if (flags & PFR_TFLAG_PERSIST)
1287 printf(" persist");
1288 if (flags & PFR_TFLAG_COUNTERS)
1289 printf(" counters");
1290 SIMPLEQ_FOREACH(ti, nodes, entries) {
1291 if (ti->file) {
1292 printf(" file \"%s\"", ti->file);
1293 continue;
1294 }
1295 printf(" {");
1296 for (;;) {
1297 for (h = ti->host; h != NULL; h = h->next) {
1298 printf(h->not ? " !" : " ");
1299 print_addr(&h->addr, h->af, 0);
1300 }
1301 nti = SIMPLEQ_NEXT(ti, entries);
1302 if (nti != NULL && nti->file == NULL)
1303 ti = nti; /* merge lists */
1304 else
1305 break;
1306 }
1307 printf(" }");
1308 }
1309 if (addrs && SIMPLEQ_EMPTY(nodes))
1310 printf(" { }");
1311 printf("\n");
1312 }
1313
1314 int
parse_flags(char * s)1315 parse_flags(char *s)
1316 {
1317 char *p, *q;
1318 uint16_t f = 0;
1319
1320 for (p = s; *p; p++) {
1321 if ((q = strchr(tcpflags, *p)) == NULL)
1322 return -1;
1323 else
1324 f |= 1 << (q - tcpflags);
1325 }
1326 return (f ? f : TH_FLAGS);
1327 }
1328
1329 void
set_ipmask(struct node_host * h,int bb)1330 set_ipmask(struct node_host *h, int bb)
1331 {
1332 struct pf_addr *m, *n;
1333 int i, j = 0;
1334 uint8_t b;
1335
1336 m = &h->addr.v.a.mask;
1337 memset(m, 0, sizeof(*m));
1338
1339 if (bb == -1)
1340 b = h->af == AF_INET ? 32 : 128;
1341 else
1342 b = bb;
1343
1344 while (b >= 32) {
1345 m->addr32[j++] = 0xffffffff;
1346 b -= 32;
1347 }
1348 for (i = 31; i > 31-b; --i)
1349 m->addr32[j] |= (1 << i);
1350 if (b)
1351 m->addr32[j] = htonl(m->addr32[j]);
1352
1353 /* Mask off bits of the address that will never be used. */
1354 n = &h->addr.v.a.addr;
1355 if (h->addr.type == PF_ADDR_ADDRMASK)
1356 for (i = 0; i < 4; i++)
1357 n->addr32[i] = n->addr32[i] & m->addr32[i];
1358 }
1359
1360 int
check_netmask(struct node_host * h,sa_family_t af)1361 check_netmask(struct node_host *h, sa_family_t af)
1362 {
1363 struct node_host *n = NULL;
1364 struct pf_addr *m;
1365
1366 for (n = h; n != NULL; n = n->next) {
1367 if (h->addr.type == PF_ADDR_TABLE)
1368 continue;
1369 m = &h->addr.v.a.mask;
1370 /* netmasks > 32 bit are invalid on v4 */
1371 if (af == AF_INET &&
1372 (m->addr32[1] || m->addr32[2] || m->addr32[3])) {
1373 fprintf(stderr, "netmask %u invalid for IPv4 address\n",
1374 unmask(m));
1375 return (1);
1376 }
1377 }
1378 return (0);
1379 }
1380
1381 struct node_host *
gen_dynnode(struct node_host * h,sa_family_t af)1382 gen_dynnode(struct node_host *h, sa_family_t af)
1383 {
1384 struct node_host *n;
1385
1386 if (h->addr.type != PF_ADDR_DYNIFTL)
1387 return (NULL);
1388
1389 if ((n = calloc(1, sizeof(*n))) == NULL)
1390 return (NULL);
1391 bcopy(h, n, sizeof(*n));
1392 n->ifname = NULL;
1393 n->next = NULL;
1394 n->tail = NULL;
1395
1396 /* fix up netmask */
1397 if (af == AF_INET && unmask(&n->addr.v.a.mask) > 32)
1398 set_ipmask(n, 32);
1399
1400 return (n);
1401 }
1402
1403 /* interface lookup routines */
1404
1405 static struct node_host *iftab;
1406
1407 /*
1408 * Retrieve the list of groups this interface is a member of and make sure
1409 * each group is in the group map.
1410 */
1411 static void
ifa_add_groups_to_map(char * ifa_name)1412 ifa_add_groups_to_map(char *ifa_name)
1413 {
1414 int s, len;
1415 struct ifgroupreq ifgr;
1416 struct ifg_req *ifg;
1417
1418 s = get_query_socket();
1419
1420 /* Get size of group list for this interface */
1421 memset(&ifgr, 0, sizeof(ifgr));
1422 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ);
1423 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1424 err(1, "SIOCGIFGROUP");
1425
1426 /* Retrieve group list for this interface */
1427 len = ifgr.ifgr_len;
1428 ifgr.ifgr_groups =
1429 (struct ifg_req *)calloc(len / sizeof(struct ifg_req),
1430 sizeof(struct ifg_req));
1431 if (ifgr.ifgr_groups == NULL)
1432 err(1, "calloc");
1433 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1434 err(1, "SIOCGIFGROUP");
1435
1436 ifg = ifgr.ifgr_groups;
1437 for (; ifg && len >= sizeof(struct ifg_req); ifg++) {
1438 len -= sizeof(struct ifg_req);
1439 if (strcmp(ifg->ifgrq_group, "all")) {
1440 ENTRY item;
1441 ENTRY *ret_item;
1442 int *answer;
1443
1444 item.key = ifg->ifgrq_group;
1445 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) {
1446 struct ifgroupreq ifgr2;
1447
1448 /* Don't know the answer yet */
1449 if ((answer = malloc(sizeof(int))) == NULL)
1450 err(1, "malloc");
1451
1452 bzero(&ifgr2, sizeof(ifgr2));
1453 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group,
1454 sizeof(ifgr2.ifgr_name));
1455 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0)
1456 *answer = ifgr2.ifgr_len;
1457 else
1458 *answer = 0;
1459
1460 item.key = strdup(ifg->ifgrq_group);
1461 item.data = answer;
1462 if (hsearch_r(item, ENTER, &ret_item,
1463 &isgroup_map) == 0)
1464 err(1, "interface group query response"
1465 " map insert");
1466 }
1467 }
1468 }
1469 free(ifgr.ifgr_groups);
1470 }
1471
1472 void
ifa_load(void)1473 ifa_load(void)
1474 {
1475 struct ifaddrs *ifap, *ifa;
1476 struct node_host *n = NULL, *h = NULL;
1477
1478 if (getifaddrs(&ifap) < 0)
1479 err(1, "getifaddrs");
1480
1481 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1482 if (ifa->ifa_addr == NULL ||
1483 !(ifa->ifa_addr->sa_family == AF_INET ||
1484 ifa->ifa_addr->sa_family == AF_INET6 ||
1485 ifa->ifa_addr->sa_family == AF_LINK))
1486 continue;
1487 n = calloc(1, sizeof(struct node_host));
1488 if (n == NULL)
1489 err(1, "%s: calloc", __func__);
1490 n->af = ifa->ifa_addr->sa_family;
1491 n->ifa_flags = ifa->ifa_flags;
1492 #ifdef __KAME__
1493 if (n->af == AF_INET6 &&
1494 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
1495 ifa->ifa_addr)->sin6_addr) &&
1496 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
1497 0) {
1498 struct sockaddr_in6 *sin6;
1499
1500 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1501 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
1502 sin6->sin6_addr.s6_addr[3];
1503 sin6->sin6_addr.s6_addr[2] = 0;
1504 sin6->sin6_addr.s6_addr[3] = 0;
1505 }
1506 #endif
1507 n->ifindex = 0;
1508 if (n->af == AF_LINK) {
1509 n->ifindex = ((struct sockaddr_dl *)
1510 ifa->ifa_addr)->sdl_index;
1511 ifa_add_groups_to_map(ifa->ifa_name);
1512 } else {
1513 copy_satopfaddr(&n->addr.v.a.addr, ifa->ifa_addr);
1514 ifa->ifa_netmask->sa_family = ifa->ifa_addr->sa_family;
1515 copy_satopfaddr(&n->addr.v.a.mask, ifa->ifa_netmask);
1516 if (ifa->ifa_broadaddr != NULL) {
1517 ifa->ifa_broadaddr->sa_family = ifa->ifa_addr->sa_family;
1518 copy_satopfaddr(&n->bcast, ifa->ifa_broadaddr);
1519 }
1520 if (ifa->ifa_dstaddr != NULL) {
1521 ifa->ifa_dstaddr->sa_family = ifa->ifa_addr->sa_family;
1522 copy_satopfaddr(&n->peer, ifa->ifa_dstaddr);
1523 }
1524 if (n->af == AF_INET6)
1525 n->ifindex = ((struct sockaddr_in6 *)
1526 ifa->ifa_addr) ->sin6_scope_id;
1527 }
1528 if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
1529 err(1, "%s: strdup", __func__);
1530 n->next = NULL;
1531 n->tail = n;
1532 if (h == NULL)
1533 h = n;
1534 else {
1535 h->tail->next = n;
1536 h->tail = n;
1537 }
1538 }
1539
1540 iftab = h;
1541 freeifaddrs(ifap);
1542 }
1543
1544 static int
get_socket_domain(void)1545 get_socket_domain(void)
1546 {
1547 int sdom;
1548
1549 sdom = AF_UNSPEC;
1550 #ifdef WITH_INET6
1551 if (sdom == AF_UNSPEC && feature_present("inet6"))
1552 sdom = AF_INET6;
1553 #endif
1554 #ifdef WITH_INET
1555 if (sdom == AF_UNSPEC && feature_present("inet"))
1556 sdom = AF_INET;
1557 #endif
1558 if (sdom == AF_UNSPEC)
1559 sdom = AF_LINK;
1560
1561 return (sdom);
1562 }
1563
1564 int
get_query_socket(void)1565 get_query_socket(void)
1566 {
1567 static int s = -1;
1568
1569 if (s == -1) {
1570 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1)
1571 err(1, "socket");
1572 }
1573
1574 return (s);
1575 }
1576
1577 /*
1578 * Returns the response len if the name is a group, otherwise returns 0.
1579 */
1580 static int
is_a_group(char * name)1581 is_a_group(char *name)
1582 {
1583 ENTRY item;
1584 ENTRY *ret_item;
1585
1586 item.key = name;
1587 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0)
1588 return (0);
1589
1590 return (*(int *)ret_item->data);
1591 }
1592
1593 unsigned int
ifa_nametoindex(const char * ifa_name)1594 ifa_nametoindex(const char *ifa_name)
1595 {
1596 struct node_host *p;
1597
1598 for (p = iftab; p; p = p->next) {
1599 if (p->af == AF_LINK && strcmp(p->ifname, ifa_name) == 0)
1600 return (p->ifindex);
1601 }
1602 errno = ENXIO;
1603 return (0);
1604 }
1605
1606 char *
ifa_indextoname(unsigned int ifindex,char * ifa_name)1607 ifa_indextoname(unsigned int ifindex, char *ifa_name)
1608 {
1609 struct node_host *p;
1610
1611 for (p = iftab; p; p = p->next) {
1612 if (p->af == AF_LINK && ifindex == p->ifindex) {
1613 strlcpy(ifa_name, p->ifname, IFNAMSIZ);
1614 return (ifa_name);
1615 }
1616 }
1617 errno = ENXIO;
1618 return (NULL);
1619 }
1620
1621 struct node_host *
ifa_exists(char * ifa_name)1622 ifa_exists(char *ifa_name)
1623 {
1624 struct node_host *n;
1625
1626 if (iftab == NULL)
1627 ifa_load();
1628
1629 /* check whether this is a group */
1630 if (is_a_group(ifa_name)) {
1631 /* fake a node_host */
1632 if ((n = calloc(1, sizeof(*n))) == NULL)
1633 err(1, "calloc");
1634 if ((n->ifname = strdup(ifa_name)) == NULL)
1635 err(1, "strdup");
1636 return (n);
1637 }
1638
1639 for (n = iftab; n; n = n->next) {
1640 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
1641 return (n);
1642 }
1643
1644 return (NULL);
1645 }
1646
1647 struct node_host *
ifa_grouplookup(char * ifa_name,int flags)1648 ifa_grouplookup(char *ifa_name, int flags)
1649 {
1650 struct ifg_req *ifg;
1651 struct ifgroupreq ifgr;
1652 int s, len;
1653 struct node_host *n, *h = NULL;
1654
1655 s = get_query_socket();
1656 len = is_a_group(ifa_name);
1657 if (len == 0)
1658 return (NULL);
1659 bzero(&ifgr, sizeof(ifgr));
1660 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
1661 ifgr.ifgr_len = len;
1662 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
1663 err(1, "calloc");
1664 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
1665 err(1, "SIOCGIFGMEMB");
1666
1667 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req);
1668 ifg++) {
1669 len -= sizeof(struct ifg_req);
1670 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL)
1671 continue;
1672 if (h == NULL)
1673 h = n;
1674 else {
1675 h->tail->next = n;
1676 h->tail = n->tail;
1677 }
1678 }
1679 free(ifgr.ifgr_groups);
1680
1681 return (h);
1682 }
1683
1684 struct node_host *
ifa_lookup(char * ifa_name,int flags)1685 ifa_lookup(char *ifa_name, int flags)
1686 {
1687 struct node_host *p = NULL, *h = NULL, *n = NULL;
1688 int got4 = 0, got6 = 0;
1689 const char *last_if = NULL;
1690
1691 /* first load iftab and isgroup_map */
1692 if (iftab == NULL)
1693 ifa_load();
1694
1695 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL)
1696 return (h);
1697
1698 if (!strncmp(ifa_name, "self", IFNAMSIZ))
1699 ifa_name = NULL;
1700
1701 for (p = iftab; p; p = p->next) {
1702 if (ifa_skip_if(ifa_name, p))
1703 continue;
1704 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
1705 continue;
1706 if ((flags & PFI_AFLAG_BROADCAST) &&
1707 !(p->ifa_flags & IFF_BROADCAST))
1708 continue;
1709 if ((flags & PFI_AFLAG_BROADCAST) && p->bcast.v4.s_addr == 0)
1710 continue;
1711 if ((flags & PFI_AFLAG_PEER) &&
1712 !(p->ifa_flags & IFF_POINTOPOINT))
1713 continue;
1714 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
1715 continue;
1716 if (last_if == NULL || strcmp(last_if, p->ifname))
1717 got4 = got6 = 0;
1718 last_if = p->ifname;
1719 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
1720 continue;
1721 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 &&
1722 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6))
1723 continue;
1724 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
1725 continue;
1726 if (p->af == AF_INET)
1727 got4 = 1;
1728 else
1729 got6 = 1;
1730 n = calloc(1, sizeof(struct node_host));
1731 if (n == NULL)
1732 err(1, "%s: calloc", __func__);
1733 n->af = p->af;
1734 if (flags & PFI_AFLAG_BROADCAST)
1735 memcpy(&n->addr.v.a.addr, &p->bcast,
1736 sizeof(struct pf_addr));
1737 else if (flags & PFI_AFLAG_PEER)
1738 memcpy(&n->addr.v.a.addr, &p->peer,
1739 sizeof(struct pf_addr));
1740 else
1741 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
1742 sizeof(struct pf_addr));
1743 if (flags & PFI_AFLAG_NETWORK)
1744 set_ipmask(n, unmask(&p->addr.v.a.mask));
1745 else
1746 set_ipmask(n, -1);
1747 n->ifindex = p->ifindex;
1748 n->ifname = strdup(p->ifname);
1749
1750 n->next = NULL;
1751 n->tail = n;
1752 if (h == NULL)
1753 h = n;
1754 else {
1755 h->tail->next = n;
1756 h->tail = n;
1757 }
1758 }
1759 return (h);
1760 }
1761
1762 int
ifa_skip_if(const char * filter,struct node_host * p)1763 ifa_skip_if(const char *filter, struct node_host *p)
1764 {
1765 int n;
1766
1767 if (p->af != AF_INET && p->af != AF_INET6)
1768 return (1);
1769 if (filter == NULL || !*filter)
1770 return (0);
1771 if (!strcmp(p->ifname, filter))
1772 return (0); /* exact match */
1773 n = strlen(filter);
1774 if (n < 1 || n >= IFNAMSIZ)
1775 return (1); /* sanity check */
1776 if (filter[n-1] >= '0' && filter[n-1] <= '9')
1777 return (1); /* only do exact match in that case */
1778 if (strncmp(p->ifname, filter, n))
1779 return (1); /* prefix doesn't match */
1780 return (p->ifname[n] < '0' || p->ifname[n] > '9');
1781 }
1782
1783
1784 struct node_host *
host(const char * s,int opts)1785 host(const char *s, int opts)
1786 {
1787 struct node_host *h = NULL;
1788 int mask = -1;
1789 char *p, *ps;
1790 const char *errstr;
1791
1792 if ((p = strchr(s, '/')) != NULL) {
1793 mask = strtonum(p+1, 0, 128, &errstr);
1794 if (errstr) {
1795 fprintf(stderr, "netmask is %s: %s\n", errstr, p);
1796 goto error;
1797 }
1798 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
1799 err(1, "%s: malloc", __func__);
1800 strlcpy(ps, s, strlen(s) - strlen(p) + 1);
1801 } else {
1802 if ((ps = strdup(s)) == NULL)
1803 err(1, "%s: strdup", __func__);
1804 }
1805
1806 if ((h = host_ip(ps, mask)) == NULL &&
1807 (h = host_if(ps, mask)) == NULL &&
1808 (h = host_dns(ps, mask, (opts & PF_OPT_NODNS))) == NULL) {
1809 fprintf(stderr, "no IP address found for %s\n", s);
1810 goto error;
1811 }
1812
1813 error:
1814 free(ps);
1815 return (h);
1816 }
1817
1818 struct node_host *
host_if(const char * s,int mask)1819 host_if(const char *s, int mask)
1820 {
1821 struct node_host *n, *h = NULL;
1822 char *p, *ps;
1823 int flags = 0;
1824
1825 if ((ps = strdup(s)) == NULL)
1826 err(1, "host_if: strdup");
1827 while ((p = strrchr(ps, ':')) != NULL) {
1828 if (!strcmp(p+1, "network"))
1829 flags |= PFI_AFLAG_NETWORK;
1830 else if (!strcmp(p+1, "broadcast"))
1831 flags |= PFI_AFLAG_BROADCAST;
1832 else if (!strcmp(p+1, "peer"))
1833 flags |= PFI_AFLAG_PEER;
1834 else if (!strcmp(p+1, "0"))
1835 flags |= PFI_AFLAG_NOALIAS;
1836 else
1837 goto error;
1838 *p = '\0';
1839 }
1840 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
1841 fprintf(stderr, "illegal combination of interface modifiers\n");
1842 goto error;
1843 }
1844 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
1845 fprintf(stderr, "network or broadcast lookup, but "
1846 "extra netmask given\n");
1847 goto error;
1848 }
1849 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) {
1850 /* interface with this name exists */
1851 h = ifa_lookup(ps, flags);
1852 if (mask > -1)
1853 for (n = h; n != NULL; n = n->next)
1854 set_ipmask(n, mask);
1855 }
1856
1857 error:
1858 free(ps);
1859 return (h);
1860 }
1861
1862 struct node_host *
host_ip(const char * s,int mask)1863 host_ip(const char *s, int mask)
1864 {
1865 struct addrinfo hints, *res;
1866 struct node_host *h = NULL;
1867
1868 h = calloc(1, sizeof(*h));
1869 if (h == NULL)
1870 err(1, "%s: calloc", __func__);
1871 if (mask != -1) {
1872 /* Try to parse 10/8 */
1873 h->af = AF_INET;
1874 if (inet_net_pton(AF_INET, s, &h->addr.v.a.addr.v4,
1875 sizeof(h->addr.v.a.addr.v4)) != -1)
1876 goto out;
1877 }
1878
1879 memset(&hints, 0, sizeof(hints));
1880 hints.ai_family = AF_UNSPEC;
1881 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1882 hints.ai_flags = AI_NUMERICHOST;
1883 if (getaddrinfo(s, NULL, &hints, &res) == 0) {
1884 h->af = res->ai_family;
1885 copy_satopfaddr(&h->addr.v.a.addr, res->ai_addr);
1886 if (h->af == AF_INET6)
1887 h->ifindex =
1888 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1889 freeaddrinfo(res);
1890 } else {
1891 free(h);
1892 return (NULL);
1893 }
1894 out:
1895 set_ipmask(h, mask);
1896 h->ifname = NULL;
1897 h->next = NULL;
1898 h->tail = h;
1899
1900 return (h);
1901 }
1902
1903 struct node_host *
host_dns(const char * s,int mask,int numeric)1904 host_dns(const char *s, int mask, int numeric)
1905 {
1906 struct addrinfo hints, *res0, *res;
1907 struct node_host *n, *h = NULL;
1908 int noalias = 0, got4 = 0, got6 = 0;
1909 char *p, *ps;
1910
1911 if ((ps = strdup(s)) == NULL)
1912 err(1, "host_dns: strdup");
1913 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
1914 noalias = 1;
1915 *p = '\0';
1916 }
1917 memset(&hints, 0, sizeof(hints));
1918 hints.ai_family = PF_UNSPEC;
1919 hints.ai_socktype = SOCK_STREAM; /* DUMMY */
1920 if (numeric)
1921 hints.ai_flags = AI_NUMERICHOST;
1922 if (getaddrinfo(ps, NULL, &hints, &res0) != 0)
1923 goto error;
1924
1925 for (res = res0; res; res = res->ai_next) {
1926 if (res->ai_family != AF_INET &&
1927 res->ai_family != AF_INET6)
1928 continue;
1929 if (noalias) {
1930 if (res->ai_family == AF_INET) {
1931 if (got4)
1932 continue;
1933 got4 = 1;
1934 } else {
1935 if (got6)
1936 continue;
1937 got6 = 1;
1938 }
1939 }
1940 n = calloc(1, sizeof(struct node_host));
1941 if (n == NULL)
1942 err(1, "host_dns: calloc");
1943 n->ifname = NULL;
1944 n->af = res->ai_family;
1945 copy_satopfaddr(&n->addr.v.a.addr, res->ai_addr);
1946 if (res->ai_family == AF_INET6)
1947 n->ifindex =
1948 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1949 set_ipmask(n, mask);
1950 n->next = NULL;
1951 n->tail = n;
1952 if (h == NULL)
1953 h = n;
1954 else {
1955 h->tail->next = n;
1956 h->tail = n;
1957 }
1958 }
1959 freeaddrinfo(res0);
1960 error:
1961 free(ps);
1962
1963 return (h);
1964 }
1965
1966 /*
1967 * convert a hostname to a list of addresses and put them in the given buffer.
1968 * test:
1969 * if set to 1, only simple addresses are accepted (no netblock, no "!").
1970 */
1971 int
append_addr(struct pfr_buffer * b,char * s,int test,int opts)1972 append_addr(struct pfr_buffer *b, char *s, int test, int opts)
1973 {
1974 char *r;
1975 struct node_host *h, *n;
1976 int rv, not = 0;
1977
1978 for (r = s; *r == '!'; r++)
1979 not = !not;
1980 if ((n = host(r, opts)) == NULL) {
1981 errno = 0;
1982 return (-1);
1983 }
1984 rv = append_addr_host(b, n, test, not);
1985 do {
1986 h = n;
1987 n = n->next;
1988 free(h);
1989 } while (n != NULL);
1990 return (rv);
1991 }
1992
1993 /*
1994 * same as previous function, but with a pre-parsed input and the ability
1995 * to "negate" the result. Does not free the node_host list.
1996 * not:
1997 * setting it to 1 is equivalent to adding "!" in front of parameter s.
1998 */
1999 int
append_addr_host(struct pfr_buffer * b,struct node_host * n,int test,int not)2000 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
2001 {
2002 int bits;
2003 struct pfr_addr addr;
2004
2005 do {
2006 bzero(&addr, sizeof(addr));
2007 addr.pfra_not = n->not ^ not;
2008 addr.pfra_af = n->af;
2009 addr.pfra_net = unmask(&n->addr.v.a.mask);
2010 switch (n->af) {
2011 case AF_INET:
2012 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
2013 bits = 32;
2014 break;
2015 case AF_INET6:
2016 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
2017 sizeof(struct in6_addr));
2018 bits = 128;
2019 break;
2020 default:
2021 errno = EINVAL;
2022 return (-1);
2023 }
2024 if ((test && (not || addr.pfra_net != bits)) ||
2025 addr.pfra_net > bits) {
2026 errno = EINVAL;
2027 return (-1);
2028 }
2029 if (pfr_buf_add(b, &addr))
2030 return (-1);
2031 } while ((n = n->next) != NULL);
2032
2033 return (0);
2034 }
2035
2036 int
pfctl_add_trans(struct pfr_buffer * buf,int rs_num,const char * anchor)2037 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor)
2038 {
2039 struct pfioc_trans_e trans;
2040
2041 bzero(&trans, sizeof(trans));
2042 trans.rs_num = rs_num;
2043 if (strlcpy(trans.anchor, anchor,
2044 sizeof(trans.anchor)) >= sizeof(trans.anchor))
2045 errx(1, "pfctl_add_trans: strlcpy");
2046
2047 return pfr_buf_add(buf, &trans);
2048 }
2049
2050 u_int32_t
pfctl_get_ticket(struct pfr_buffer * buf,int rs_num,const char * anchor)2051 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor)
2052 {
2053 struct pfioc_trans_e *p;
2054
2055 PFRB_FOREACH(p, buf)
2056 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor))
2057 return (p->ticket);
2058 errx(1, "pfctl_get_ticket: assertion failed");
2059 }
2060
2061 int
pfctl_trans(int dev,struct pfr_buffer * buf,u_long cmd,int from)2062 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
2063 {
2064 struct pfioc_trans trans;
2065
2066 bzero(&trans, sizeof(trans));
2067 trans.size = buf->pfrb_size - from;
2068 trans.esize = sizeof(struct pfioc_trans_e);
2069 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
2070 return ioctl(dev, cmd, &trans);
2071 }
2072