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 size_t 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 size_t 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 size_t 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 size_t 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 opts,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 opts, int numeric)
393 {
394 char buf[PF_OSFP_LEN*3];
395 int verbose = opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG);
396
397 if (src->addr.type == PF_ADDR_ADDRMASK &&
398 dst->addr.type == PF_ADDR_ADDRMASK &&
399 PF_AZERO(&src->addr.v.a.addr, AF_INET6) &&
400 PF_AZERO(&src->addr.v.a.mask, AF_INET6) &&
401 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) &&
402 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) &&
403 !src->neg && !dst->neg &&
404 !src->port_op && !dst->port_op &&
405 osfp == PF_OSFP_ANY)
406 printf(" all");
407 else {
408 printf(" from ");
409 if (src->neg)
410 printf("! ");
411 print_addr(&src->addr, af, verbose);
412 if (src->port_op)
413 print_port(src->port_op, src->port[0],
414 src->port[1],
415 proto == IPPROTO_TCP ? "tcp" : "udp",
416 numeric);
417 if (osfp != PF_OSFP_ANY)
418 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf,
419 sizeof(buf)));
420
421 printf(" to ");
422 if (dst->neg)
423 printf("! ");
424 print_addr(&dst->addr, af, verbose);
425 if (dst->port_op)
426 print_port(dst->port_op, dst->port[0],
427 dst->port[1],
428 proto == IPPROTO_TCP ? "tcp" : "udp",
429 numeric);
430 }
431 }
432
433 void
print_pool(struct pfctl_pool * pool,u_int16_t p1,u_int16_t p2,int id)434 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2, int id)
435 {
436 struct pfctl_pooladdr *pooladdr;
437
438 if ((TAILQ_FIRST(&pool->list) != NULL) &&
439 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
440 printf("{ ");
441 TAILQ_FOREACH(pooladdr, &pool->list, entries){
442 switch (id) {
443 case PF_NAT:
444 case PF_RDR:
445 case PF_BINAT:
446 print_addr(&pooladdr->addr, pooladdr->af, 0);
447 break;
448 case PF_PASS:
449 case PF_MATCH:
450 if (PF_AZERO(&pooladdr->addr.v.a.addr, pooladdr->af))
451 printf("%s", pooladdr->ifname);
452 else {
453 printf("(%s ", pooladdr->ifname);
454 print_addr(&pooladdr->addr, pooladdr->af, 0);
455 printf(")");
456 }
457 break;
458 default:
459 break;
460 }
461 if (TAILQ_NEXT(pooladdr, entries) != NULL)
462 printf(", ");
463 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
464 printf(" }");
465 }
466 switch (id) {
467 case PF_NAT:
468 if ((p1 != PF_NAT_PROXY_PORT_LOW ||
469 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) {
470 if (p1 == p2)
471 printf(" port %u", p1);
472 else
473 printf(" port %u:%u", p1, p2);
474 }
475 break;
476 case PF_RDR:
477 if (p1) {
478 printf(" port %u", p1);
479 if (p2 && (p2 != p1))
480 printf(":%u", p2);
481 }
482 break;
483 default:
484 break;
485 }
486 switch (pool->opts & PF_POOL_TYPEMASK) {
487 case PF_POOL_NONE:
488 break;
489 case PF_POOL_BITMASK:
490 printf(" bitmask");
491 break;
492 case PF_POOL_RANDOM:
493 printf(" random");
494 break;
495 case PF_POOL_SRCHASH:
496 printf(" source-hash 0x%08x%08x%08x%08x",
497 pool->key.key32[0], pool->key.key32[1],
498 pool->key.key32[2], pool->key.key32[3]);
499 break;
500 case PF_POOL_ROUNDROBIN:
501 printf(" round-robin");
502 break;
503 }
504 if (pool->opts & PF_POOL_STICKYADDR)
505 printf(" sticky-address");
506 if (pool->opts & PF_POOL_ENDPI)
507 printf(" endpoint-independent");
508 if (id == PF_NAT && p1 == 0 && p2 == 0)
509 printf(" static-port");
510 if (pool->mape.offset > 0)
511 printf(" map-e-portset %u/%u/%u",
512 pool->mape.offset, pool->mape.psidlen, pool->mape.psid);
513 if (pool->opts & PF_POOL_IPV6NH)
514 printf(" prefer-ipv6-nexthop");
515 }
516
517 void
print_status(struct pfctl_status * s,struct pfctl_syncookies * cookies,int opts)518 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts)
519 {
520 struct pfctl_status_counter *c;
521 char statline[80], *running;
522 time_t runtime;
523 int i;
524 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1];
525 static const char hex[] = "0123456789abcdef";
526
527 runtime = time(NULL) - s->since;
528 running = s->running ? "Enabled" : "Disabled";
529
530 if (s->since) {
531 unsigned int sec, min, hrs;
532 time_t day = runtime;
533
534 sec = day % 60;
535 day /= 60;
536 min = day % 60;
537 day /= 60;
538 hrs = day % 24;
539 day /= 24;
540 snprintf(statline, sizeof(statline),
541 "Status: %s for %lld days %.2u:%.2u:%.2u",
542 running, (long long)day, hrs, min, sec);
543 } else
544 snprintf(statline, sizeof(statline), "Status: %s", running);
545 printf("%-44s", statline);
546 switch (s->debug) {
547 case PF_DEBUG_NONE:
548 printf("%15s\n\n", "Debug: None");
549 break;
550 case PF_DEBUG_URGENT:
551 printf("%15s\n\n", "Debug: Urgent");
552 break;
553 case PF_DEBUG_MISC:
554 printf("%15s\n\n", "Debug: Misc");
555 break;
556 case PF_DEBUG_NOISY:
557 printf("%15s\n\n", "Debug: Loud");
558 break;
559 }
560
561 if (opts & PF_OPT_VERBOSE) {
562 printf("Hostid: 0x%08x\n", s->hostid);
563
564 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) {
565 buf[i + i] = hex[s->pf_chksum[i] >> 4];
566 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f];
567 }
568 buf[i + i] = '\0';
569 printf("Checksum: 0x%s\n\n", buf);
570 }
571
572 if (s->ifname[0] != 0) {
573 printf("Interface Stats for %-16s %5s %16s\n",
574 s->ifname, "IPv4", "IPv6");
575 printf(" %-25s %14llu %16llu\n", "Bytes In",
576 (unsigned long long)s->bcounters[0][0],
577 (unsigned long long)s->bcounters[1][0]);
578 printf(" %-25s %14llu %16llu\n", "Bytes Out",
579 (unsigned long long)s->bcounters[0][1],
580 (unsigned long long)s->bcounters[1][1]);
581 printf(" Packets In\n");
582 printf(" %-23s %14llu %16llu\n", "Passed",
583 (unsigned long long)s->pcounters[0][0][PF_PASS],
584 (unsigned long long)s->pcounters[1][0][PF_PASS]);
585 printf(" %-23s %14llu %16llu\n", "Blocked",
586 (unsigned long long)s->pcounters[0][0][PF_DROP],
587 (unsigned long long)s->pcounters[1][0][PF_DROP]);
588 printf(" Packets Out\n");
589 printf(" %-23s %14llu %16llu\n", "Passed",
590 (unsigned long long)s->pcounters[0][1][PF_PASS],
591 (unsigned long long)s->pcounters[1][1][PF_PASS]);
592 printf(" %-23s %14llu %16llu\n\n", "Blocked",
593 (unsigned long long)s->pcounters[0][1][PF_DROP],
594 (unsigned long long)s->pcounters[1][1][PF_DROP]);
595 }
596 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
597 printf(" %-25s %14ju %14s\n", "current entries", s->states, "");
598 TAILQ_FOREACH(c, &s->fcounters, entry) {
599 printf(" %-25s %14ju ", c->name, c->counter);
600 if (runtime > 0)
601 printf("%14.1f/s\n",
602 (double)c->counter / (double)runtime);
603 else
604 printf("%14s\n", "");
605 }
606 if (opts & PF_OPT_VERBOSE) {
607 printf("Source Tracking Table\n");
608 printf(" %-25s %14ju %14s\n", "current entries",
609 s->src_nodes, "");
610 TAILQ_FOREACH(c, &s->scounters, entry) {
611 printf(" %-25s %14ju ", c->name, c->counter);
612 if (runtime > 0)
613 printf("%14.1f/s\n",
614 (double)c->counter / (double)runtime);
615 else
616 printf("%14s\n", "");
617 }
618 }
619 if (opts & PF_OPT_VERBOSE) {
620 printf("Fragments\n");
621 printf(" %-25s %14ju %14s\n", "current entries",
622 s->fragments, "");
623 TAILQ_FOREACH(c, &s->ncounters, entry) {
624 printf(" %-25s %14ju ", c->name,
625 c->counter);
626 if (runtime > 0)
627 printf("%14.1f/s\n",
628 (double)c->counter / (double)runtime);
629 else
630 printf("%14s\n", "");
631 }
632 }
633 printf("Counters\n");
634 TAILQ_FOREACH(c, &s->counters, entry) {
635 printf(" %-25s %14ju ", c->name, c->counter);
636 if (runtime > 0)
637 printf("%14.1f/s\n",
638 (double)c->counter / (double)runtime);
639 else
640 printf("%14s\n", "");
641 }
642 if (opts & PF_OPT_VERBOSE) {
643 printf("Limit Counters\n");
644 TAILQ_FOREACH(c, &s->lcounters, entry) {
645 printf(" %-25s %14ju ", c->name, c->counter);
646 if (runtime > 0)
647 printf("%14.1f/s\n",
648 (double)c->counter / (double)runtime);
649 else
650 printf("%14s\n", "");
651 }
652
653 printf("Syncookies\n");
654 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE);
655 printf(" %-25s %s\n", "mode",
656 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]);
657 printf(" %-25s %s\n", "active",
658 s->syncookies_active ? "active" : "inactive");
659 if (opts & PF_OPT_VERBOSE2) {
660 printf(" %-25s %d %%\n", "highwater", cookies->highwater);
661 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater);
662 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states);
663 }
664 printf("Reassemble %24s %s\n",
665 s->reass & PF_REASS_ENABLED ? "yes" : "no",
666 s->reass & PF_REASS_NODF ? "no-df" : ""
667 );
668 }
669 }
670
671 void
print_running(struct pfctl_status * status)672 print_running(struct pfctl_status *status)
673 {
674 printf("%s\n", status->running ? "Enabled" : "Disabled");
675 }
676
677 void
print_src_node(struct pfctl_src_node * sn,int opts)678 print_src_node(struct pfctl_src_node *sn, int opts)
679 {
680 struct pf_addr_wrap aw;
681 uint64_t min, sec;
682 const char *sn_type_names[] = PF_SN_TYPE_NAMES;
683
684 memset(&aw, 0, sizeof(aw));
685 if (sn->af == AF_INET)
686 aw.v.a.mask.addr32[0] = 0xffffffff;
687 else
688 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
689
690 aw.v.a.addr = sn->addr;
691 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
692 printf(" -> ");
693 aw.v.a.addr = sn->raddr;
694 print_addr(&aw, sn->raf, opts & PF_OPT_VERBOSE2);
695 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states,
696 sn->conn, sn->conn_rate.count / 1000,
697 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds);
698 if (opts & PF_OPT_VERBOSE) {
699 sec = sn->creation % 60;
700 sn->creation /= 60;
701 min = sn->creation % 60;
702 sn->creation /= 60;
703 printf(" age %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64,
704 sn->creation, min, sec);
705 if (sn->states == 0) {
706 sec = sn->expire % 60;
707 sn->expire /= 60;
708 min = sn->expire % 60;
709 sn->expire /= 60;
710 printf(", expires in %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64,
711 sn->expire, min, sec);
712 }
713 printf(", %" PRIu64 " pkts, %" PRIu64 " bytes",
714 sn->packets[0] + sn->packets[1],
715 sn->bytes[0] + sn->bytes[1]);
716 switch (sn->ruletype) {
717 case PF_NAT:
718 if (sn->rule != -1)
719 printf(", nat rule %u", sn->rule);
720 break;
721 case PF_RDR:
722 if (sn->rule != -1)
723 printf(", rdr rule %u", sn->rule);
724 break;
725 case PF_PASS:
726 case PF_MATCH:
727 if (sn->rule != -1)
728 printf(", filter rule %u", sn->rule);
729 break;
730 }
731 printf(", %s", sn_type_names[sn->type]);
732 printf("\n");
733 }
734 }
735
736 static void
print_eth_addr(const struct pfctl_eth_addr * a)737 print_eth_addr(const struct pfctl_eth_addr *a)
738 {
739 int i, masklen = ETHER_ADDR_LEN * 8;
740 bool seen_unset = false;
741
742 for (i = 0; i < ETHER_ADDR_LEN; i++) {
743 if (a->addr[i] != 0)
744 break;
745 }
746
747 /* Unset, so don't print anything. */
748 if (i == ETHER_ADDR_LEN)
749 return;
750
751 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "",
752 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4],
753 a->addr[5]);
754
755 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) {
756 bool isset = a->mask[i / 8] & (1 << i % 8);
757
758 if (! seen_unset) {
759 if (isset)
760 continue;
761 seen_unset = true;
762 masklen = i;
763 } else {
764 /* Not actually a continuous mask, so print the whole
765 * thing. */
766 if (isset)
767 break;
768 continue;
769 }
770 }
771
772 if (masklen == (ETHER_ADDR_LEN * 8))
773 return;
774
775 if (i == (ETHER_ADDR_LEN * 8)) {
776 printf("/%d", masklen);
777 return;
778 }
779
780 printf("&%02x:%02x:%02x:%02x:%02x:%02x",
781 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4],
782 a->mask[5]);
783 }
784
785 void
print_eth_rule(struct pfctl_eth_rule * r,const char * anchor_call,int rule_numbers)786 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call,
787 int rule_numbers)
788 {
789 static const char *actiontypes[] = { "pass", "block", "", "", "", "",
790 "", "", "", "", "", "", "match" };
791
792 int i;
793
794 if (rule_numbers)
795 printf("@%u ", r->nr);
796
797 printf("ether ");
798 if (anchor_call[0]) {
799 if (anchor_call[0] == '_') {
800 printf("anchor");
801 } else
802 printf("anchor \"%s\"", anchor_call);
803 } else {
804 printf("%s", actiontypes[r->action]);
805 }
806 if (r->direction == PF_IN)
807 printf(" in");
808 else if (r->direction == PF_OUT)
809 printf(" out");
810
811 if (r->quick)
812 printf(" quick");
813 if (r->ifname[0]) {
814 if (r->ifnot)
815 printf(" on ! %s", r->ifname);
816 else
817 printf(" on %s", r->ifname);
818 }
819 if (r->bridge_to[0])
820 printf(" bridge-to %s", r->bridge_to);
821 if (r->proto)
822 printf(" proto 0x%04x", r->proto);
823
824 if (r->src.isset) {
825 printf(" from ");
826 print_eth_addr(&r->src);
827 }
828 if (r->dst.isset) {
829 printf(" to ");
830 print_eth_addr(&r->dst);
831 }
832 printf(" l3");
833 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst,
834 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0,
835 0, 0);
836
837 i = 0;
838 while (r->label[i][0])
839 printf(" label \"%s\"", r->label[i++]);
840 if (r->ridentifier)
841 printf(" ridentifier %u", r->ridentifier);
842
843 if (r->qname[0])
844 printf(" queue %s", r->qname);
845 if (r->tagname[0])
846 printf(" tag %s", r->tagname);
847 if (r->match_tagname[0]) {
848 if (r->match_tag_not)
849 printf(" !");
850 printf(" tagged %s", r->match_tagname);
851 }
852 if (r->dnpipe)
853 printf(" %s %d",
854 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
855 r->dnpipe);
856 }
857
858 void
print_rule(struct pfctl_rule * r,const char * anchor_call,int opts,int numeric)859 print_rule(struct pfctl_rule *r, const char *anchor_call, int opts, int numeric)
860 {
861 static const char *actiontypes[] = { "pass", "block", "scrub",
862 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr",
863 "synproxy drop", "defer", "match", "af-rt", "route-to" };
864 static const char *anchortypes[] = { "anchor", "anchor", "anchor",
865 "anchor", "nat-anchor", "nat-anchor", "binat-anchor",
866 "binat-anchor", "rdr-anchor", "rdr-anchor" };
867 int i, ropts;
868 int verbose = opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG);
869 char *p;
870
871 if ((r->rule_flag & PFRULE_EXPIRED) && (!verbose))
872 return;
873
874 if (verbose)
875 printf("@%d ", r->nr);
876 if (anchor_call[0]) {
877 if (r->action >= nitems(anchortypes)) {
878 printf("anchor(%d)", r->action);
879 } else {
880 p = strrchr(anchor_call, '/');
881 if (p ? p[1] == '_' : anchor_call[0] == '_')
882 printf("%s", anchortypes[r->action]);
883 else
884 printf("%s \"%s\"", anchortypes[r->action],
885 anchor_call);
886 }
887 } else {
888 if (r->action >= nitems(actiontypes))
889 printf("action(%d)", r->action);
890 else
891 printf("%s", actiontypes[r->action]);
892 }
893 if (r->action == PF_DROP) {
894 if (r->rule_flag & PFRULE_RETURN)
895 printf(" return");
896 else if (r->rule_flag & PFRULE_RETURNRST) {
897 if (!r->return_ttl)
898 printf(" return-rst");
899 else
900 printf(" return-rst(ttl %d)", r->return_ttl);
901 } else if (r->rule_flag & PFRULE_RETURNICMP) {
902 const struct icmpcodeent *ic, *ic6;
903
904 ic = geticmpcodebynumber(r->return_icmp >> 8,
905 r->return_icmp & 255, AF_INET);
906 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
907 r->return_icmp6 & 255, AF_INET6);
908
909 switch (r->af) {
910 case AF_INET:
911 printf(" return-icmp");
912 if (ic == NULL)
913 printf("(%u)", r->return_icmp & 255);
914 else
915 printf("(%s)", ic->name);
916 break;
917 case AF_INET6:
918 printf(" return-icmp6");
919 if (ic6 == NULL)
920 printf("(%u)", r->return_icmp6 & 255);
921 else
922 printf("(%s)", ic6->name);
923 break;
924 default:
925 printf(" return-icmp");
926 if (ic == NULL)
927 printf("(%u, ", r->return_icmp & 255);
928 else
929 printf("(%s, ", ic->name);
930 if (ic6 == NULL)
931 printf("%u)", r->return_icmp6 & 255);
932 else
933 printf("%s)", ic6->name);
934 break;
935 }
936 } else
937 printf(" drop");
938 }
939 if (r->direction == PF_IN)
940 printf(" in");
941 else if (r->direction == PF_OUT)
942 printf(" out");
943 if (r->log) {
944 printf(" log");
945 if (r->log & ~PF_LOG || r->logif) {
946 int count = 0;
947
948 printf(" (");
949 if (r->log & PF_LOG_ALL)
950 printf("%sall", count++ ? ", " : "");
951 if (r->log & PF_LOG_MATCHES)
952 printf("%smatches", count++ ? ", " : "");
953 if (r->log & PF_LOG_USER)
954 printf("%suser", count++ ? ", " : "");
955 if (r->logif)
956 printf("%sto pflog%u", count++ ? ", " : "",
957 r->logif);
958 printf(")");
959 }
960 }
961 if (r->quick)
962 printf(" quick");
963 if (r->ifname[0]) {
964 if (r->ifnot)
965 printf(" on ! %s", r->ifname);
966 else
967 printf(" on %s", r->ifname);
968 }
969 if (r->rt) {
970 if (r->rt == PF_ROUTETO)
971 printf(" route-to");
972 else if (r->rt == PF_REPLYTO)
973 printf(" reply-to");
974 else if (r->rt == PF_DUPTO)
975 printf(" dup-to");
976 printf(" ");
977 print_pool(&r->route, 0, 0, PF_PASS);
978 }
979 if (r->af) {
980 if (r->af == AF_INET)
981 printf(" inet");
982 else
983 printf(" inet6");
984 }
985 if (r->proto) {
986 const char *protoname;
987
988 if ((protoname = pfctl_proto2name(r->proto)) != NULL)
989 printf(" proto %s", protoname);
990 else
991 printf(" proto %u", r->proto);
992 }
993 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto,
994 opts, numeric);
995 if (r->rcv_ifname[0])
996 printf(" %sreceived-on %s", r->rcvifnot ? "!" : "",
997 r->rcv_ifname);
998 if (r->uid.op)
999 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user");
1000 if (r->gid.op)
1001 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group");
1002 if (r->flags || r->flagset) {
1003 printf(" flags ");
1004 print_flags(r->flags);
1005 printf("/");
1006 print_flags(r->flagset);
1007 } else if ((r->action == PF_PASS || r->action == PF_MATCH) &&
1008 (!r->proto || r->proto == IPPROTO_TCP) &&
1009 !(r->rule_flag & PFRULE_FRAGMENT) &&
1010 !anchor_call[0] && r->keep_state)
1011 printf(" flags any");
1012 if (r->type) {
1013 const struct icmptypeent *it;
1014
1015 it = geticmptypebynumber(r->type-1, r->af);
1016 if (r->af != AF_INET6)
1017 printf(" icmp-type");
1018 else
1019 printf(" icmp6-type");
1020 if (it != NULL)
1021 printf(" %s", it->name);
1022 else
1023 printf(" %u", r->type-1);
1024 if (r->code) {
1025 const struct icmpcodeent *ic;
1026
1027 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
1028 if (ic != NULL)
1029 printf(" code %s", ic->name);
1030 else
1031 printf(" code %u", r->code-1);
1032 }
1033 }
1034 if (r->tos)
1035 printf(" tos 0x%2.2x", r->tos);
1036 if (r->prio)
1037 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio);
1038 if (r->pktrate.limit)
1039 printf(" max-pkt-rate %u/%u", r->pktrate.limit,
1040 r->pktrate.seconds);
1041 if (r->max_pkt_size)
1042 printf( " max-pkt-size %u", r->max_pkt_size);
1043 if (r->scrub_flags & PFSTATE_SETMASK) {
1044 char *comma = "";
1045 printf(" set (");
1046 if (r->scrub_flags & PFSTATE_SETPRIO) {
1047 if (r->set_prio[0] == r->set_prio[1])
1048 printf("%s prio %u", comma, r->set_prio[0]);
1049 else
1050 printf("%s prio(%u, %u)", comma, r->set_prio[0],
1051 r->set_prio[1]);
1052 comma = ",";
1053 }
1054 if (r->scrub_flags & PFSTATE_SETTOS) {
1055 printf("%s tos 0x%2.2x", comma, r->set_tos);
1056 comma = ",";
1057 }
1058 printf(" )");
1059 }
1060 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0])
1061 printf(" no state");
1062 else if (r->keep_state == PF_STATE_NORMAL)
1063 printf(" keep state");
1064 else if (r->keep_state == PF_STATE_MODULATE)
1065 printf(" modulate state");
1066 else if (r->keep_state == PF_STATE_SYNPROXY)
1067 printf(" synproxy state");
1068 if (r->prob) {
1069 char buf[20];
1070
1071 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
1072 for (i = strlen(buf)-1; i > 0; i--) {
1073 if (buf[i] == '0')
1074 buf[i] = '\0';
1075 else {
1076 if (buf[i] == '.')
1077 buf[i] = '\0';
1078 break;
1079 }
1080 }
1081 printf(" probability %s%%", buf);
1082 }
1083 ropts = 0;
1084 if (r->max_states || r->max_src_nodes || r->max_src_states)
1085 ropts = 1;
1086 if (r->rule_flag & PFRULE_NOSYNC)
1087 ropts = 1;
1088 if (r->rule_flag & PFRULE_SRCTRACK)
1089 ropts = 1;
1090 if (r->rule_flag & PFRULE_IFBOUND)
1091 ropts = 1;
1092 if (r->rule_flag & PFRULE_STATESLOPPY)
1093 ropts = 1;
1094 if (r->rule_flag & PFRULE_PFLOW)
1095 ropts = 1;
1096 for (i = 0; !ropts && i < PFTM_MAX; ++i)
1097 if (r->timeout[i])
1098 ropts = 1;
1099 if (ropts) {
1100 printf(" (");
1101 if (r->max_states) {
1102 printf("max %u", r->max_states);
1103 ropts = 0;
1104 }
1105 if (r->rule_flag & PFRULE_NOSYNC) {
1106 if (!ropts)
1107 printf(", ");
1108 printf("no-sync");
1109 ropts = 0;
1110 }
1111 if (r->rule_flag & PFRULE_SRCTRACK) {
1112 if (!ropts)
1113 printf(", ");
1114 printf("source-track");
1115 if (r->rule_flag & PFRULE_RULESRCTRACK)
1116 printf(" rule");
1117 else
1118 printf(" global");
1119 ropts = 0;
1120 }
1121 if (r->max_src_states) {
1122 if (!ropts)
1123 printf(", ");
1124 printf("max-src-states %u", r->max_src_states);
1125 ropts = 0;
1126 }
1127 if (r->max_src_conn) {
1128 if (!ropts)
1129 printf(", ");
1130 printf("max-src-conn %u", r->max_src_conn);
1131 ropts = 0;
1132 }
1133 if (r->max_src_conn_rate.limit) {
1134 if (!ropts)
1135 printf(", ");
1136 printf("max-src-conn-rate %u/%u",
1137 r->max_src_conn_rate.limit,
1138 r->max_src_conn_rate.seconds);
1139 ropts = 0;
1140 }
1141 if (r->max_src_nodes) {
1142 if (!ropts)
1143 printf(", ");
1144 printf("max-src-nodes %u", r->max_src_nodes);
1145 ropts = 0;
1146 }
1147 if (r->overload_tblname[0]) {
1148 if (!ropts)
1149 printf(", ");
1150 printf("overload <%s>", r->overload_tblname);
1151 if (r->flush)
1152 printf(" flush");
1153 if (r->flush & PF_FLUSH_GLOBAL)
1154 printf(" global");
1155 }
1156 if (r->rule_flag & PFRULE_IFBOUND) {
1157 if (!ropts)
1158 printf(", ");
1159 printf("if-bound");
1160 ropts = 0;
1161 }
1162 if (r->rule_flag & PFRULE_STATESLOPPY) {
1163 if (!ropts)
1164 printf(", ");
1165 printf("sloppy");
1166 ropts = 0;
1167 }
1168 if (r->rule_flag & PFRULE_PFLOW) {
1169 if (!ropts)
1170 printf(", ");
1171 printf("pflow");
1172 ropts = 0;
1173 }
1174 for (i = 0; i < PFTM_MAX; ++i)
1175 if (r->timeout[i]) {
1176 int j;
1177
1178 if (!ropts)
1179 printf(", ");
1180 ropts = 0;
1181 for (j = 0; pf_timeouts[j].name != NULL;
1182 ++j)
1183 if (pf_timeouts[j].timeout == i)
1184 break;
1185 printf("%s %u", pf_timeouts[j].name == NULL ?
1186 "inv.timeout" : pf_timeouts[j].name,
1187 r->timeout[i]);
1188 }
1189 printf(")");
1190 }
1191 if (r->allow_opts)
1192 printf(" allow-opts");
1193 if (r->rule_flag & PFRULE_FRAGMENT)
1194 printf(" fragment");
1195 if (r->action == PF_SCRUB) {
1196 /* Scrub flags for old-style scrub. */
1197 if (r->rule_flag & PFRULE_NODF)
1198 printf(" no-df");
1199 if (r->rule_flag & PFRULE_RANDOMID)
1200 printf(" random-id");
1201 if (r->min_ttl)
1202 printf(" min-ttl %d", r->min_ttl);
1203 if (r->max_mss)
1204 printf(" max-mss %d", r->max_mss);
1205 if (r->rule_flag & PFRULE_SET_TOS)
1206 printf(" set-tos 0x%2.2x", r->set_tos);
1207 if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
1208 printf(" reassemble tcp");
1209 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */
1210 printf(" fragment %sreassemble",
1211 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : "");
1212 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) {
1213 /* Scrub actions on normal rules. */
1214 printf(" scrub(");
1215 if (r->scrub_flags & PFSTATE_NODF)
1216 printf(" no-df");
1217 if (r->scrub_flags & PFSTATE_RANDOMID)
1218 printf(" random-id");
1219 if (r->min_ttl)
1220 printf(" min-ttl %d", r->min_ttl);
1221 if (r->scrub_flags & PFSTATE_SETTOS)
1222 printf(" set-tos 0x%2.2x", r->set_tos);
1223 if (r->scrub_flags & PFSTATE_SCRUB_TCP)
1224 printf(" reassemble tcp");
1225 if (r->max_mss)
1226 printf(" max-mss %d", r->max_mss);
1227 printf(")");
1228 }
1229 i = 0;
1230 while (r->label[i][0])
1231 printf(" label \"%s\"", r->label[i++]);
1232 if (r->ridentifier)
1233 printf(" ridentifier %u", r->ridentifier);
1234 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */
1235 if (r->dnrpipe)
1236 printf(" %s(%d, %d)",
1237 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1238 r->dnpipe, r->dnrpipe);
1239 else if (r->dnpipe)
1240 printf(" %s %d",
1241 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1242 r->dnpipe);
1243 if (r->rule_flag & PFRULE_ONCE)
1244 printf(" once");
1245 if (r->qname[0] && r->pqname[0])
1246 printf(" queue(%s, %s)", r->qname, r->pqname);
1247 else if (r->qname[0])
1248 printf(" queue %s", r->qname);
1249 if (r->tagname[0])
1250 printf(" tag %s", r->tagname);
1251 if (r->match_tagname[0]) {
1252 if (r->match_tag_not)
1253 printf(" !");
1254 printf(" tagged %s", r->match_tagname);
1255 }
1256 if (r->rtableid != -1)
1257 printf(" rtable %u", r->rtableid);
1258 if (r->divert.port) {
1259 #ifdef __FreeBSD__
1260 printf(" divert-to %u", ntohs(r->divert.port));
1261 #else
1262 if (PF_AZERO(&r->divert.addr, r->af)) {
1263 printf(" divert-reply");
1264 } else {
1265 printf(" divert-to ");
1266 print_addr_str(r->af, &r->divert.addr);
1267 printf(" port %u", ntohs(r->divert.port));
1268 }
1269 #endif
1270 }
1271 if (anchor_call[0])
1272 return;
1273 if (r->action == PF_NAT || r->action == PF_BINAT || r->action == PF_RDR) {
1274 printf(" -> ");
1275 print_pool(&r->rdr, r->rdr.proxy_port[0],
1276 r->rdr.proxy_port[1], r->action);
1277 } else {
1278 if (!TAILQ_EMPTY(&r->nat.list)) {
1279 if (r->rule_flag & PFRULE_AFTO) {
1280 printf(" af-to %s from ", r->naf == AF_INET ? "inet" : (r->naf == AF_INET6 ? "inet6" : "? "));
1281 } else {
1282 printf(" nat-to ");
1283 }
1284 print_pool(&r->nat, r->nat.proxy_port[0],
1285 r->nat.proxy_port[1], PF_NAT);
1286 }
1287 if (!TAILQ_EMPTY(&r->rdr.list)) {
1288 if (r->rule_flag & PFRULE_AFTO) {
1289 printf(" to ");
1290 } else {
1291 printf(" rdr-to ");
1292 }
1293 print_pool(&r->rdr, r->rdr.proxy_port[0],
1294 r->rdr.proxy_port[1], PF_RDR);
1295 }
1296 }
1297
1298 if (r->rule_flag & PFRULE_EXPIRED) {
1299 printf(" # expired");
1300
1301 if (r->exptime != 0)
1302 printf(" %s", ctime(&r->exptime));
1303 }
1304 }
1305
1306 void
print_tabledef(const char * name,int flags,int addrs,struct node_tinithead * nodes)1307 print_tabledef(const char *name, int flags, int addrs,
1308 struct node_tinithead *nodes)
1309 {
1310 struct node_tinit *ti, *nti;
1311 struct node_host *h;
1312
1313 printf("table <%s>", name);
1314 if (flags & PFR_TFLAG_CONST)
1315 printf(" const");
1316 if (flags & PFR_TFLAG_PERSIST)
1317 printf(" persist");
1318 if (flags & PFR_TFLAG_COUNTERS)
1319 printf(" counters");
1320 SIMPLEQ_FOREACH(ti, nodes, entries) {
1321 if (ti->file) {
1322 printf(" file \"%s\"", ti->file);
1323 continue;
1324 }
1325 printf(" {");
1326 for (;;) {
1327 for (h = ti->host; h != NULL; h = h->next) {
1328 printf(h->not ? " !" : " ");
1329 print_addr(&h->addr, h->af, 0);
1330 }
1331 nti = SIMPLEQ_NEXT(ti, entries);
1332 if (nti != NULL && nti->file == NULL)
1333 ti = nti; /* merge lists */
1334 else
1335 break;
1336 }
1337 printf(" }");
1338 }
1339 if (addrs && SIMPLEQ_EMPTY(nodes))
1340 printf(" { }");
1341 printf("\n");
1342 }
1343
1344 int
parse_flags(char * s)1345 parse_flags(char *s)
1346 {
1347 char *p, *q;
1348 uint16_t f = 0;
1349
1350 for (p = s; *p; p++) {
1351 if ((q = strchr(tcpflags, *p)) == NULL)
1352 return -1;
1353 else
1354 f |= 1 << (q - tcpflags);
1355 }
1356 return (f ? f : TH_FLAGS);
1357 }
1358
1359 void
set_ipmask(struct node_host * h,int bb)1360 set_ipmask(struct node_host *h, int bb)
1361 {
1362 struct pf_addr *m, *n;
1363 int i, j = 0;
1364 uint8_t b;
1365
1366 m = &h->addr.v.a.mask;
1367 memset(m, 0, sizeof(*m));
1368
1369 if (bb == -1)
1370 b = h->af == AF_INET ? 32 : 128;
1371 else
1372 b = bb;
1373
1374 while (b >= 32) {
1375 m->addr32[j++] = 0xffffffff;
1376 b -= 32;
1377 }
1378 for (i = 31; i > 31-b; --i)
1379 m->addr32[j] |= (1 << i);
1380 if (b)
1381 m->addr32[j] = htonl(m->addr32[j]);
1382
1383 /* Mask off bits of the address that will never be used. */
1384 n = &h->addr.v.a.addr;
1385 if (h->addr.type == PF_ADDR_ADDRMASK)
1386 for (i = 0; i < 4; i++)
1387 n->addr32[i] = n->addr32[i] & m->addr32[i];
1388 }
1389
1390 int
check_netmask(struct node_host * h,sa_family_t af)1391 check_netmask(struct node_host *h, sa_family_t af)
1392 {
1393 struct node_host *n = NULL;
1394 struct pf_addr *m;
1395
1396 for (n = h; n != NULL; n = n->next) {
1397 if (h->addr.type == PF_ADDR_TABLE)
1398 continue;
1399 m = &h->addr.v.a.mask;
1400 /* netmasks > 32 bit are invalid on v4 */
1401 if (af == AF_INET &&
1402 (m->addr32[1] || m->addr32[2] || m->addr32[3])) {
1403 fprintf(stderr, "netmask %u invalid for IPv4 address\n",
1404 unmask(m));
1405 return (1);
1406 }
1407 }
1408 return (0);
1409 }
1410
1411 struct node_host *
gen_dynnode(struct node_host * h,sa_family_t af)1412 gen_dynnode(struct node_host *h, sa_family_t af)
1413 {
1414 struct node_host *n;
1415
1416 if (h->addr.type != PF_ADDR_DYNIFTL)
1417 return (NULL);
1418
1419 if ((n = calloc(1, sizeof(*n))) == NULL)
1420 return (NULL);
1421 bcopy(h, n, sizeof(*n));
1422 n->ifname = NULL;
1423 n->next = NULL;
1424 n->tail = NULL;
1425
1426 /* fix up netmask */
1427 if (af == AF_INET && unmask(&n->addr.v.a.mask) > 32)
1428 set_ipmask(n, 32);
1429
1430 return (n);
1431 }
1432
1433 /* interface lookup routines */
1434
1435 static struct node_host *iftab;
1436
1437 /*
1438 * Retrieve the list of groups this interface is a member of and make sure
1439 * each group is in the group map.
1440 */
1441 static void
ifa_add_groups_to_map(char * ifa_name)1442 ifa_add_groups_to_map(char *ifa_name)
1443 {
1444 int s, len;
1445 struct ifgroupreq ifgr;
1446 struct ifg_req *ifg;
1447
1448 s = get_query_socket();
1449
1450 /* Get size of group list for this interface */
1451 memset(&ifgr, 0, sizeof(ifgr));
1452 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ);
1453 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1454 err(1, "SIOCGIFGROUP");
1455
1456 /* Retrieve group list for this interface */
1457 len = ifgr.ifgr_len;
1458 ifgr.ifgr_groups =
1459 (struct ifg_req *)calloc(len / sizeof(struct ifg_req),
1460 sizeof(struct ifg_req));
1461 if (ifgr.ifgr_groups == NULL)
1462 err(1, "calloc");
1463 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1464 err(1, "SIOCGIFGROUP");
1465
1466 ifg = ifgr.ifgr_groups;
1467 for (; ifg && len >= sizeof(struct ifg_req); ifg++) {
1468 len -= sizeof(struct ifg_req);
1469 if (strcmp(ifg->ifgrq_group, "all")) {
1470 ENTRY item;
1471 ENTRY *ret_item;
1472 int *answer;
1473
1474 item.key = ifg->ifgrq_group;
1475 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) {
1476 struct ifgroupreq ifgr2;
1477
1478 /* Don't know the answer yet */
1479 if ((answer = malloc(sizeof(int))) == NULL)
1480 err(1, "malloc");
1481
1482 bzero(&ifgr2, sizeof(ifgr2));
1483 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group,
1484 sizeof(ifgr2.ifgr_name));
1485 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0)
1486 *answer = ifgr2.ifgr_len;
1487 else
1488 *answer = 0;
1489
1490 item.key = strdup(ifg->ifgrq_group);
1491 item.data = answer;
1492 if (hsearch_r(item, ENTER, &ret_item,
1493 &isgroup_map) == 0)
1494 err(1, "interface group query response"
1495 " map insert");
1496 }
1497 }
1498 }
1499 free(ifgr.ifgr_groups);
1500 }
1501
1502 void
ifa_load(void)1503 ifa_load(void)
1504 {
1505 struct ifaddrs *ifap, *ifa;
1506 struct node_host *n = NULL, *h = NULL;
1507
1508 if (getifaddrs(&ifap) < 0)
1509 err(1, "getifaddrs");
1510
1511 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1512 if (ifa->ifa_addr == NULL ||
1513 !(ifa->ifa_addr->sa_family == AF_INET ||
1514 ifa->ifa_addr->sa_family == AF_INET6 ||
1515 ifa->ifa_addr->sa_family == AF_LINK))
1516 continue;
1517 n = calloc(1, sizeof(struct node_host));
1518 if (n == NULL)
1519 err(1, "%s: calloc", __func__);
1520 n->af = ifa->ifa_addr->sa_family;
1521 n->ifa_flags = ifa->ifa_flags;
1522 #ifdef __KAME__
1523 if (n->af == AF_INET6 &&
1524 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
1525 ifa->ifa_addr)->sin6_addr) &&
1526 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
1527 0) {
1528 struct sockaddr_in6 *sin6;
1529
1530 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1531 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
1532 sin6->sin6_addr.s6_addr[3];
1533 sin6->sin6_addr.s6_addr[2] = 0;
1534 sin6->sin6_addr.s6_addr[3] = 0;
1535 }
1536 #endif
1537 n->ifindex = 0;
1538 if (n->af == AF_LINK) {
1539 n->ifindex = ((struct sockaddr_dl *)
1540 ifa->ifa_addr)->sdl_index;
1541 ifa_add_groups_to_map(ifa->ifa_name);
1542 } else {
1543 copy_satopfaddr(&n->addr.v.a.addr, ifa->ifa_addr);
1544 ifa->ifa_netmask->sa_family = ifa->ifa_addr->sa_family;
1545 copy_satopfaddr(&n->addr.v.a.mask, ifa->ifa_netmask);
1546 if (ifa->ifa_broadaddr != NULL) {
1547 ifa->ifa_broadaddr->sa_family = ifa->ifa_addr->sa_family;
1548 copy_satopfaddr(&n->bcast, ifa->ifa_broadaddr);
1549 }
1550 if (ifa->ifa_dstaddr != NULL) {
1551 ifa->ifa_dstaddr->sa_family = ifa->ifa_addr->sa_family;
1552 copy_satopfaddr(&n->peer, ifa->ifa_dstaddr);
1553 }
1554 if (n->af == AF_INET6)
1555 n->ifindex = ((struct sockaddr_in6 *)
1556 ifa->ifa_addr) ->sin6_scope_id;
1557 }
1558 if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
1559 err(1, "%s: strdup", __func__);
1560 n->next = NULL;
1561 n->tail = n;
1562 if (h == NULL)
1563 h = n;
1564 else {
1565 h->tail->next = n;
1566 h->tail = n;
1567 }
1568 }
1569
1570 iftab = h;
1571 freeifaddrs(ifap);
1572 }
1573
1574 static int
get_socket_domain(void)1575 get_socket_domain(void)
1576 {
1577 int sdom;
1578
1579 sdom = AF_UNSPEC;
1580 #ifdef WITH_INET6
1581 if (sdom == AF_UNSPEC && feature_present("inet6"))
1582 sdom = AF_INET6;
1583 #endif
1584 #ifdef WITH_INET
1585 if (sdom == AF_UNSPEC && feature_present("inet"))
1586 sdom = AF_INET;
1587 #endif
1588 if (sdom == AF_UNSPEC)
1589 sdom = AF_LINK;
1590
1591 return (sdom);
1592 }
1593
1594 int
get_query_socket(void)1595 get_query_socket(void)
1596 {
1597 static int s = -1;
1598
1599 if (s == -1) {
1600 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1)
1601 err(1, "socket");
1602 }
1603
1604 return (s);
1605 }
1606
1607 /*
1608 * Returns the response len if the name is a group, otherwise returns 0.
1609 */
1610 static int
is_a_group(char * name)1611 is_a_group(char *name)
1612 {
1613 ENTRY item;
1614 ENTRY *ret_item;
1615
1616 item.key = name;
1617 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0)
1618 return (0);
1619
1620 return (*(int *)ret_item->data);
1621 }
1622
1623 unsigned int
ifa_nametoindex(const char * ifa_name)1624 ifa_nametoindex(const char *ifa_name)
1625 {
1626 struct node_host *p;
1627
1628 for (p = iftab; p; p = p->next) {
1629 if (p->af == AF_LINK && strcmp(p->ifname, ifa_name) == 0)
1630 return (p->ifindex);
1631 }
1632 errno = ENXIO;
1633 return (0);
1634 }
1635
1636 char *
ifa_indextoname(unsigned int ifindex,char * ifa_name)1637 ifa_indextoname(unsigned int ifindex, char *ifa_name)
1638 {
1639 struct node_host *p;
1640
1641 for (p = iftab; p; p = p->next) {
1642 if (p->af == AF_LINK && ifindex == p->ifindex) {
1643 strlcpy(ifa_name, p->ifname, IFNAMSIZ);
1644 return (ifa_name);
1645 }
1646 }
1647 errno = ENXIO;
1648 return (NULL);
1649 }
1650
1651 struct node_host *
ifa_exists(char * ifa_name)1652 ifa_exists(char *ifa_name)
1653 {
1654 struct node_host *n;
1655
1656 if (iftab == NULL)
1657 ifa_load();
1658
1659 /* check whether this is a group */
1660 if (is_a_group(ifa_name)) {
1661 /* fake a node_host */
1662 if ((n = calloc(1, sizeof(*n))) == NULL)
1663 err(1, "calloc");
1664 if ((n->ifname = strdup(ifa_name)) == NULL)
1665 err(1, "strdup");
1666 return (n);
1667 }
1668
1669 for (n = iftab; n; n = n->next) {
1670 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
1671 return (n);
1672 }
1673
1674 return (NULL);
1675 }
1676
1677 struct node_host *
ifa_grouplookup(char * ifa_name,int flags)1678 ifa_grouplookup(char *ifa_name, int flags)
1679 {
1680 struct ifg_req *ifg;
1681 struct ifgroupreq ifgr;
1682 int s, len;
1683 struct node_host *n, *h = NULL;
1684
1685 s = get_query_socket();
1686 len = is_a_group(ifa_name);
1687 if (len == 0)
1688 return (NULL);
1689 bzero(&ifgr, sizeof(ifgr));
1690 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
1691 ifgr.ifgr_len = len;
1692 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
1693 err(1, "calloc");
1694 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
1695 err(1, "SIOCGIFGMEMB");
1696
1697 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req);
1698 ifg++) {
1699 len -= sizeof(struct ifg_req);
1700 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL)
1701 continue;
1702 if (h == NULL)
1703 h = n;
1704 else {
1705 h->tail->next = n;
1706 h->tail = n->tail;
1707 }
1708 }
1709 free(ifgr.ifgr_groups);
1710
1711 return (h);
1712 }
1713
1714 struct node_host *
ifa_lookup(char * ifa_name,int flags)1715 ifa_lookup(char *ifa_name, int flags)
1716 {
1717 struct node_host *p = NULL, *h = NULL, *n = NULL;
1718 int got4 = 0, got6 = 0;
1719 const char *last_if = NULL;
1720
1721 /* first load iftab and isgroup_map */
1722 if (iftab == NULL)
1723 ifa_load();
1724
1725 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL)
1726 return (h);
1727
1728 if (!strncmp(ifa_name, "self", IFNAMSIZ))
1729 ifa_name = NULL;
1730
1731 for (p = iftab; p; p = p->next) {
1732 if (ifa_skip_if(ifa_name, p))
1733 continue;
1734 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
1735 continue;
1736 if ((flags & PFI_AFLAG_BROADCAST) &&
1737 !(p->ifa_flags & IFF_BROADCAST))
1738 continue;
1739 if ((flags & PFI_AFLAG_BROADCAST) && p->bcast.v4.s_addr == 0)
1740 continue;
1741 if ((flags & PFI_AFLAG_PEER) &&
1742 !(p->ifa_flags & IFF_POINTOPOINT))
1743 continue;
1744 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
1745 continue;
1746 if (last_if == NULL || strcmp(last_if, p->ifname))
1747 got4 = got6 = 0;
1748 last_if = p->ifname;
1749 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
1750 continue;
1751 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 &&
1752 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6))
1753 continue;
1754 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
1755 continue;
1756 if (p->af == AF_INET)
1757 got4 = 1;
1758 else
1759 got6 = 1;
1760 n = calloc(1, sizeof(struct node_host));
1761 if (n == NULL)
1762 err(1, "%s: calloc", __func__);
1763 n->af = p->af;
1764 if (flags & PFI_AFLAG_BROADCAST)
1765 memcpy(&n->addr.v.a.addr, &p->bcast,
1766 sizeof(struct pf_addr));
1767 else if (flags & PFI_AFLAG_PEER)
1768 memcpy(&n->addr.v.a.addr, &p->peer,
1769 sizeof(struct pf_addr));
1770 else
1771 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
1772 sizeof(struct pf_addr));
1773 if (flags & PFI_AFLAG_NETWORK)
1774 set_ipmask(n, unmask(&p->addr.v.a.mask));
1775 else
1776 set_ipmask(n, -1);
1777 n->ifindex = p->ifindex;
1778 n->ifname = strdup(p->ifname);
1779
1780 n->next = NULL;
1781 n->tail = n;
1782 if (h == NULL)
1783 h = n;
1784 else {
1785 h->tail->next = n;
1786 h->tail = n;
1787 }
1788 }
1789 return (h);
1790 }
1791
1792 int
ifa_skip_if(const char * filter,struct node_host * p)1793 ifa_skip_if(const char *filter, struct node_host *p)
1794 {
1795 int n;
1796
1797 if (p->af != AF_INET && p->af != AF_INET6)
1798 return (1);
1799 if (filter == NULL || !*filter)
1800 return (0);
1801 if (!strcmp(p->ifname, filter))
1802 return (0); /* exact match */
1803 n = strlen(filter);
1804 if (n < 1 || n >= IFNAMSIZ)
1805 return (1); /* sanity check */
1806 if (filter[n-1] >= '0' && filter[n-1] <= '9')
1807 return (1); /* only do exact match in that case */
1808 if (strncmp(p->ifname, filter, n))
1809 return (1); /* prefix doesn't match */
1810 return (p->ifname[n] < '0' || p->ifname[n] > '9');
1811 }
1812
1813
1814 struct node_host *
host(const char * s,int opts)1815 host(const char *s, int opts)
1816 {
1817 struct node_host *h = NULL;
1818 int mask = -1;
1819 char *p, *ps;
1820 const char *errstr;
1821
1822 if ((p = strchr(s, '/')) != NULL) {
1823 mask = strtonum(p+1, 0, 128, &errstr);
1824 if (errstr) {
1825 fprintf(stderr, "netmask is %s: %s\n", errstr, p);
1826 goto error;
1827 }
1828 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
1829 err(1, "%s: malloc", __func__);
1830 strlcpy(ps, s, strlen(s) - strlen(p) + 1);
1831 } else {
1832 if ((ps = strdup(s)) == NULL)
1833 err(1, "%s: strdup", __func__);
1834 }
1835
1836 if ((h = host_ip(ps, mask)) == NULL &&
1837 (h = host_if(ps, mask)) == NULL &&
1838 (h = host_dns(ps, mask, (opts & PF_OPT_NODNS))) == NULL) {
1839 fprintf(stderr, "no IP address found for %s\n", s);
1840 goto error;
1841 }
1842
1843 error:
1844 free(ps);
1845 return (h);
1846 }
1847
1848 struct node_host *
host_if(const char * s,int mask)1849 host_if(const char *s, int mask)
1850 {
1851 struct node_host *n, *h = NULL;
1852 char *p, *ps;
1853 int flags = 0;
1854
1855 if ((ps = strdup(s)) == NULL)
1856 err(1, "host_if: strdup");
1857 while ((p = strrchr(ps, ':')) != NULL) {
1858 if (!strcmp(p+1, "network"))
1859 flags |= PFI_AFLAG_NETWORK;
1860 else if (!strcmp(p+1, "broadcast"))
1861 flags |= PFI_AFLAG_BROADCAST;
1862 else if (!strcmp(p+1, "peer"))
1863 flags |= PFI_AFLAG_PEER;
1864 else if (!strcmp(p+1, "0"))
1865 flags |= PFI_AFLAG_NOALIAS;
1866 else
1867 goto error;
1868 *p = '\0';
1869 }
1870 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
1871 fprintf(stderr, "illegal combination of interface modifiers\n");
1872 goto error;
1873 }
1874 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
1875 fprintf(stderr, "network or broadcast lookup, but "
1876 "extra netmask given\n");
1877 goto error;
1878 }
1879 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) {
1880 /* interface with this name exists */
1881 h = ifa_lookup(ps, flags);
1882 if (mask > -1)
1883 for (n = h; n != NULL; n = n->next)
1884 set_ipmask(n, mask);
1885 }
1886
1887 error:
1888 free(ps);
1889 return (h);
1890 }
1891
1892 struct node_host *
host_ip(const char * s,int mask)1893 host_ip(const char *s, int mask)
1894 {
1895 struct addrinfo hints, *res;
1896 struct node_host *h = NULL;
1897
1898 h = calloc(1, sizeof(*h));
1899 if (h == NULL)
1900 err(1, "%s: calloc", __func__);
1901 if (mask != -1) {
1902 /* Try to parse 10/8 */
1903 h->af = AF_INET;
1904 if (inet_net_pton(AF_INET, s, &h->addr.v.a.addr.v4,
1905 sizeof(h->addr.v.a.addr.v4)) != -1)
1906 goto out;
1907 }
1908
1909 memset(&hints, 0, sizeof(hints));
1910 hints.ai_family = AF_UNSPEC;
1911 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1912 hints.ai_flags = AI_NUMERICHOST;
1913 if (getaddrinfo(s, NULL, &hints, &res) == 0) {
1914 h->af = res->ai_family;
1915 copy_satopfaddr(&h->addr.v.a.addr, res->ai_addr);
1916 if (h->af == AF_INET6)
1917 h->ifindex =
1918 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1919 freeaddrinfo(res);
1920 } else {
1921 free(h);
1922 return (NULL);
1923 }
1924 out:
1925 set_ipmask(h, mask);
1926 h->ifname = NULL;
1927 h->next = NULL;
1928 h->tail = h;
1929
1930 return (h);
1931 }
1932
1933 struct node_host *
host_dns(const char * s,int mask,int numeric)1934 host_dns(const char *s, int mask, int numeric)
1935 {
1936 struct addrinfo hints, *res0, *res;
1937 struct node_host *n, *h = NULL;
1938 int noalias = 0, got4 = 0, got6 = 0;
1939 char *p, *ps;
1940
1941 if ((ps = strdup(s)) == NULL)
1942 err(1, "host_dns: strdup");
1943 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
1944 noalias = 1;
1945 *p = '\0';
1946 }
1947 memset(&hints, 0, sizeof(hints));
1948 hints.ai_family = PF_UNSPEC;
1949 hints.ai_socktype = SOCK_STREAM; /* DUMMY */
1950 if (numeric)
1951 hints.ai_flags = AI_NUMERICHOST;
1952 if (getaddrinfo(ps, NULL, &hints, &res0) != 0)
1953 goto error;
1954
1955 for (res = res0; res; res = res->ai_next) {
1956 if (res->ai_family != AF_INET &&
1957 res->ai_family != AF_INET6)
1958 continue;
1959 if (noalias) {
1960 if (res->ai_family == AF_INET) {
1961 if (got4)
1962 continue;
1963 got4 = 1;
1964 } else {
1965 if (got6)
1966 continue;
1967 got6 = 1;
1968 }
1969 }
1970 n = calloc(1, sizeof(struct node_host));
1971 if (n == NULL)
1972 err(1, "host_dns: calloc");
1973 n->ifname = NULL;
1974 n->af = res->ai_family;
1975 copy_satopfaddr(&n->addr.v.a.addr, res->ai_addr);
1976 if (res->ai_family == AF_INET6)
1977 n->ifindex =
1978 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1979 set_ipmask(n, mask);
1980 n->next = NULL;
1981 n->tail = n;
1982 if (h == NULL)
1983 h = n;
1984 else {
1985 h->tail->next = n;
1986 h->tail = n;
1987 }
1988 }
1989 freeaddrinfo(res0);
1990 error:
1991 free(ps);
1992
1993 return (h);
1994 }
1995
1996 /*
1997 * convert a hostname to a list of addresses and put them in the given buffer.
1998 * test:
1999 * if set to 1, only simple addresses are accepted (no netblock, no "!").
2000 */
2001 int
append_addr(struct pfr_buffer * b,char * s,int test,int opts)2002 append_addr(struct pfr_buffer *b, char *s, int test, int opts)
2003 {
2004 char *r;
2005 struct node_host *h, *n;
2006 int rv, not = 0;
2007
2008 for (r = s; *r == '!'; r++)
2009 not = !not;
2010 if ((n = host(r, opts)) == NULL) {
2011 errno = 0;
2012 return (-1);
2013 }
2014 rv = append_addr_host(b, n, test, not);
2015 do {
2016 h = n;
2017 n = n->next;
2018 free(h);
2019 } while (n != NULL);
2020 return (rv);
2021 }
2022
2023 /*
2024 * same as previous function, but with a pre-parsed input and the ability
2025 * to "negate" the result. Does not free the node_host list.
2026 * not:
2027 * setting it to 1 is equivalent to adding "!" in front of parameter s.
2028 */
2029 int
append_addr_host(struct pfr_buffer * b,struct node_host * n,int test,int not)2030 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
2031 {
2032 int bits;
2033 struct pfr_addr addr;
2034
2035 do {
2036 bzero(&addr, sizeof(addr));
2037 addr.pfra_not = n->not ^ not;
2038 addr.pfra_af = n->af;
2039 addr.pfra_net = unmask(&n->addr.v.a.mask);
2040 switch (n->af) {
2041 case AF_INET:
2042 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
2043 bits = 32;
2044 break;
2045 case AF_INET6:
2046 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
2047 sizeof(struct in6_addr));
2048 bits = 128;
2049 break;
2050 default:
2051 errno = EINVAL;
2052 return (-1);
2053 }
2054 if ((test && (not || addr.pfra_net != bits)) ||
2055 addr.pfra_net > bits) {
2056 errno = EINVAL;
2057 return (-1);
2058 }
2059 if (pfr_buf_add(b, &addr))
2060 return (-1);
2061 } while ((n = n->next) != NULL);
2062
2063 return (0);
2064 }
2065
2066 int
pfctl_add_trans(struct pfr_buffer * buf,int rs_num,const char * anchor)2067 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor)
2068 {
2069 struct pfioc_trans_e trans;
2070
2071 bzero(&trans, sizeof(trans));
2072 trans.rs_num = rs_num;
2073 if (strlcpy(trans.anchor, anchor,
2074 sizeof(trans.anchor)) >= sizeof(trans.anchor))
2075 errx(1, "pfctl_add_trans: strlcpy");
2076
2077 return pfr_buf_add(buf, &trans);
2078 }
2079
2080 u_int32_t
pfctl_get_ticket(struct pfr_buffer * buf,int rs_num,const char * anchor)2081 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor)
2082 {
2083 struct pfioc_trans_e *p;
2084
2085 PFRB_FOREACH(p, buf)
2086 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor))
2087 return (p->ticket);
2088 errx(1, "pfctl_get_ticket: assertion failed");
2089 }
2090
2091 int
pfctl_trans(int dev,struct pfr_buffer * buf,u_long cmd,int from)2092 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
2093 {
2094 struct pfioc_trans trans;
2095
2096 bzero(&trans, sizeof(trans));
2097 trans.size = buf->pfrb_size - from;
2098 trans.esize = sizeof(struct pfioc_trans_e);
2099 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
2100 return ioctl(dev, cmd, &trans);
2101 }
2102