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.h>
42 #include <netinet/in.h>
43 #include <netinet/in_systm.h>
44 #include <netinet/ip.h>
45 #include <netinet/ip_icmp.h>
46 #include <netinet/icmp6.h>
47 #include <net/pfvar.h>
48 #include <arpa/inet.h>
49
50 #include <assert.h>
51 #include <search.h>
52 #include <stdio.h>
53 #include <stdlib.h>
54 #include <string.h>
55 #include <ctype.h>
56 #include <netdb.h>
57 #include <stdarg.h>
58 #include <errno.h>
59 #include <err.h>
60 #include <ifaddrs.h>
61 #include <unistd.h>
62
63 #include "pfctl_parser.h"
64 #include "pfctl.h"
65
66 void print_op (u_int8_t, const char *, const char *);
67 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int);
68 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned);
69 void print_flags (u_int8_t);
70 void print_fromto(struct pf_rule_addr *, pf_osfp_t,
71 struct pf_rule_addr *, sa_family_t, u_int8_t, int, int);
72 int ifa_skip_if(const char *filter, struct node_host *p);
73
74 struct node_host *host_if(const char *, int, int *);
75 struct node_host *host_v4(const char *, int);
76 struct node_host *host_v6(const char *, int);
77 struct node_host *host_dns(const char *, int, int);
78
79 const char * const tcpflags = "FSRPAUEW";
80
81 static const struct icmptypeent icmp_type[] = {
82 { "echoreq", ICMP_ECHO },
83 { "echorep", ICMP_ECHOREPLY },
84 { "unreach", ICMP_UNREACH },
85 { "squench", ICMP_SOURCEQUENCH },
86 { "redir", ICMP_REDIRECT },
87 { "althost", ICMP_ALTHOSTADDR },
88 { "routeradv", ICMP_ROUTERADVERT },
89 { "routersol", ICMP_ROUTERSOLICIT },
90 { "timex", ICMP_TIMXCEED },
91 { "paramprob", ICMP_PARAMPROB },
92 { "timereq", ICMP_TSTAMP },
93 { "timerep", ICMP_TSTAMPREPLY },
94 { "inforeq", ICMP_IREQ },
95 { "inforep", ICMP_IREQREPLY },
96 { "maskreq", ICMP_MASKREQ },
97 { "maskrep", ICMP_MASKREPLY },
98 { "trace", ICMP_TRACEROUTE },
99 { "dataconv", ICMP_DATACONVERR },
100 { "mobredir", ICMP_MOBILE_REDIRECT },
101 { "ipv6-where", ICMP_IPV6_WHEREAREYOU },
102 { "ipv6-here", ICMP_IPV6_IAMHERE },
103 { "mobregreq", ICMP_MOBILE_REGREQUEST },
104 { "mobregrep", ICMP_MOBILE_REGREPLY },
105 { "skip", ICMP_SKIP },
106 { "photuris", ICMP_PHOTURIS }
107 };
108
109 static const struct icmptypeent icmp6_type[] = {
110 { "unreach", ICMP6_DST_UNREACH },
111 { "toobig", ICMP6_PACKET_TOO_BIG },
112 { "timex", ICMP6_TIME_EXCEEDED },
113 { "paramprob", ICMP6_PARAM_PROB },
114 { "echoreq", ICMP6_ECHO_REQUEST },
115 { "echorep", ICMP6_ECHO_REPLY },
116 { "groupqry", ICMP6_MEMBERSHIP_QUERY },
117 { "listqry", MLD_LISTENER_QUERY },
118 { "grouprep", ICMP6_MEMBERSHIP_REPORT },
119 { "listenrep", MLD_LISTENER_REPORT },
120 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION },
121 { "listendone", MLD_LISTENER_DONE },
122 { "routersol", ND_ROUTER_SOLICIT },
123 { "routeradv", ND_ROUTER_ADVERT },
124 { "neighbrsol", ND_NEIGHBOR_SOLICIT },
125 { "neighbradv", ND_NEIGHBOR_ADVERT },
126 { "redir", ND_REDIRECT },
127 { "routrrenum", ICMP6_ROUTER_RENUMBERING },
128 { "wrureq", ICMP6_WRUREQUEST },
129 { "wrurep", ICMP6_WRUREPLY },
130 { "fqdnreq", ICMP6_FQDN_QUERY },
131 { "fqdnrep", ICMP6_FQDN_REPLY },
132 { "niqry", ICMP6_NI_QUERY },
133 { "nirep", ICMP6_NI_REPLY },
134 { "mtraceresp", MLD_MTRACE_RESP },
135 { "mtrace", MLD_MTRACE }
136 };
137
138 static const struct icmpcodeent icmp_code[] = {
139 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET },
140 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST },
141 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL },
142 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT },
143 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG },
144 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL },
145 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN },
146 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN },
147 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED },
148 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB },
149 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB },
150 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET },
151 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST },
152 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB },
153 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE },
154 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF },
155 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET },
156 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST },
157 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET },
158 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST },
159 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL },
160 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON },
161 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS },
162 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS },
163 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR },
164 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT },
165 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH },
166 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX },
167 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED },
168 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED }
169 };
170
171 static const struct icmpcodeent icmp6_code[] = {
172 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN },
173 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE },
174 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR },
175 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE },
176 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR },
177 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT },
178 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT },
179 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY },
180 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER },
181 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER },
182 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK },
183 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER }
184 };
185
186 const struct pf_timeout pf_timeouts[] = {
187 { "tcp.first", PFTM_TCP_FIRST_PACKET },
188 { "tcp.opening", PFTM_TCP_OPENING },
189 { "tcp.established", PFTM_TCP_ESTABLISHED },
190 { "tcp.closing", PFTM_TCP_CLOSING },
191 { "tcp.finwait", PFTM_TCP_FIN_WAIT },
192 { "tcp.closed", PFTM_TCP_CLOSED },
193 { "tcp.tsdiff", PFTM_TS_DIFF },
194 { "sctp.first", PFTM_SCTP_FIRST_PACKET },
195 { "sctp.opening", PFTM_SCTP_OPENING },
196 { "sctp.established", PFTM_SCTP_ESTABLISHED },
197 { "sctp.closing", PFTM_SCTP_CLOSING },
198 { "sctp.closed", PFTM_SCTP_CLOSED },
199 { "udp.first", PFTM_UDP_FIRST_PACKET },
200 { "udp.single", PFTM_UDP_SINGLE },
201 { "udp.multiple", PFTM_UDP_MULTIPLE },
202 { "icmp.first", PFTM_ICMP_FIRST_PACKET },
203 { "icmp.error", PFTM_ICMP_ERROR_REPLY },
204 { "other.first", PFTM_OTHER_FIRST_PACKET },
205 { "other.single", PFTM_OTHER_SINGLE },
206 { "other.multiple", PFTM_OTHER_MULTIPLE },
207 { "frag", PFTM_FRAG },
208 { "interval", PFTM_INTERVAL },
209 { "adaptive.start", PFTM_ADAPTIVE_START },
210 { "adaptive.end", PFTM_ADAPTIVE_END },
211 { "src.track", PFTM_SRC_NODE },
212 { NULL, 0 }
213 };
214
215 static struct hsearch_data isgroup_map;
216
217 static __attribute__((constructor)) void
pfctl_parser_init(void)218 pfctl_parser_init(void)
219 {
220 /*
221 * As hdestroy() will never be called on these tables, it will be
222 * safe to use references into the stored data as keys.
223 */
224 if (hcreate_r(0, &isgroup_map) == 0)
225 err(1, "Failed to create interface group query response map");
226 }
227
228 const struct icmptypeent *
geticmptypebynumber(u_int8_t type,sa_family_t af)229 geticmptypebynumber(u_int8_t type, sa_family_t af)
230 {
231 unsigned int i;
232
233 if (af != AF_INET6) {
234 for (i=0; i < nitems(icmp_type); i++) {
235 if (type == icmp_type[i].type)
236 return (&icmp_type[i]);
237 }
238 } else {
239 for (i=0; i < nitems(icmp6_type); i++) {
240 if (type == icmp6_type[i].type)
241 return (&icmp6_type[i]);
242 }
243 }
244 return (NULL);
245 }
246
247 const struct icmptypeent *
geticmptypebyname(char * w,sa_family_t af)248 geticmptypebyname(char *w, sa_family_t af)
249 {
250 unsigned int i;
251
252 if (af != AF_INET6) {
253 for (i=0; i < nitems(icmp_type); i++) {
254 if (!strcmp(w, icmp_type[i].name))
255 return (&icmp_type[i]);
256 }
257 } else {
258 for (i=0; i < nitems(icmp6_type); i++) {
259 if (!strcmp(w, icmp6_type[i].name))
260 return (&icmp6_type[i]);
261 }
262 }
263 return (NULL);
264 }
265
266 const struct icmpcodeent *
geticmpcodebynumber(u_int8_t type,u_int8_t code,sa_family_t af)267 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af)
268 {
269 unsigned int i;
270
271 if (af != AF_INET6) {
272 for (i=0; i < nitems(icmp_code); i++) {
273 if (type == icmp_code[i].type &&
274 code == icmp_code[i].code)
275 return (&icmp_code[i]);
276 }
277 } else {
278 for (i=0; i < nitems(icmp6_code); i++) {
279 if (type == icmp6_code[i].type &&
280 code == icmp6_code[i].code)
281 return (&icmp6_code[i]);
282 }
283 }
284 return (NULL);
285 }
286
287 const struct icmpcodeent *
geticmpcodebyname(u_long type,char * w,sa_family_t af)288 geticmpcodebyname(u_long type, char *w, sa_family_t af)
289 {
290 unsigned int i;
291
292 if (af != AF_INET6) {
293 for (i=0; i < nitems(icmp_code); i++) {
294 if (type == icmp_code[i].type &&
295 !strcmp(w, icmp_code[i].name))
296 return (&icmp_code[i]);
297 }
298 } else {
299 for (i=0; i < nitems(icmp6_code); i++) {
300 if (type == icmp6_code[i].type &&
301 !strcmp(w, icmp6_code[i].name))
302 return (&icmp6_code[i]);
303 }
304 }
305 return (NULL);
306 }
307
308 void
print_op(u_int8_t op,const char * a1,const char * a2)309 print_op(u_int8_t op, const char *a1, const char *a2)
310 {
311 if (op == PF_OP_IRG)
312 printf(" %s >< %s", a1, a2);
313 else if (op == PF_OP_XRG)
314 printf(" %s <> %s", a1, a2);
315 else if (op == PF_OP_EQ)
316 printf(" = %s", a1);
317 else if (op == PF_OP_NE)
318 printf(" != %s", a1);
319 else if (op == PF_OP_LT)
320 printf(" < %s", a1);
321 else if (op == PF_OP_LE)
322 printf(" <= %s", a1);
323 else if (op == PF_OP_GT)
324 printf(" > %s", a1);
325 else if (op == PF_OP_GE)
326 printf(" >= %s", a1);
327 else if (op == PF_OP_RRG)
328 printf(" %s:%s", a1, a2);
329 }
330
331 void
print_port(u_int8_t op,u_int16_t p1,u_int16_t p2,const char * proto,int numeric)332 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric)
333 {
334 char a1[6], a2[6];
335 struct servent *s;
336
337 if (!numeric)
338 s = getservbyport(p1, proto);
339 else
340 s = NULL;
341 p1 = ntohs(p1);
342 p2 = ntohs(p2);
343 snprintf(a1, sizeof(a1), "%u", p1);
344 snprintf(a2, sizeof(a2), "%u", p2);
345 printf(" port");
346 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE))
347 print_op(op, s->s_name, a2);
348 else
349 print_op(op, a1, a2);
350 }
351
352 void
print_ugid(u_int8_t op,unsigned u1,unsigned u2,const char * t,unsigned umax)353 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax)
354 {
355 char a1[11], a2[11];
356
357 snprintf(a1, sizeof(a1), "%u", u1);
358 snprintf(a2, sizeof(a2), "%u", u2);
359 printf(" %s", t);
360 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE))
361 print_op(op, "unknown", a2);
362 else
363 print_op(op, a1, a2);
364 }
365
366 void
print_flags(u_int8_t f)367 print_flags(u_int8_t f)
368 {
369 int i;
370
371 for (i = 0; tcpflags[i]; ++i)
372 if (f & (1 << i))
373 printf("%c", tcpflags[i]);
374 }
375
376 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)377 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst,
378 sa_family_t af, u_int8_t proto, int verbose, int numeric)
379 {
380 char buf[PF_OSFP_LEN*3];
381 if (src->addr.type == PF_ADDR_ADDRMASK &&
382 dst->addr.type == PF_ADDR_ADDRMASK &&
383 PF_AZERO(&src->addr.v.a.addr, AF_INET6) &&
384 PF_AZERO(&src->addr.v.a.mask, AF_INET6) &&
385 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) &&
386 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) &&
387 !src->neg && !dst->neg &&
388 !src->port_op && !dst->port_op &&
389 osfp == PF_OSFP_ANY)
390 printf(" all");
391 else {
392 printf(" from ");
393 if (src->neg)
394 printf("! ");
395 print_addr(&src->addr, af, verbose);
396 if (src->port_op)
397 print_port(src->port_op, src->port[0],
398 src->port[1],
399 proto == IPPROTO_TCP ? "tcp" : "udp",
400 numeric);
401 if (osfp != PF_OSFP_ANY)
402 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf,
403 sizeof(buf)));
404
405 printf(" to ");
406 if (dst->neg)
407 printf("! ");
408 print_addr(&dst->addr, af, verbose);
409 if (dst->port_op)
410 print_port(dst->port_op, dst->port[0],
411 dst->port[1],
412 proto == IPPROTO_TCP ? "tcp" : "udp",
413 numeric);
414 }
415 }
416
417 void
print_pool(struct pfctl_pool * pool,u_int16_t p1,u_int16_t p2,sa_family_t af,int id)418 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2,
419 sa_family_t af, int id)
420 {
421 struct pf_pooladdr *pooladdr;
422
423 if ((TAILQ_FIRST(&pool->list) != NULL) &&
424 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
425 printf("{ ");
426 TAILQ_FOREACH(pooladdr, &pool->list, entries){
427 switch (id) {
428 case PF_NAT:
429 case PF_RDR:
430 case PF_BINAT:
431 print_addr(&pooladdr->addr, af, 0);
432 break;
433 case PF_PASS:
434 case PF_MATCH:
435 if (PF_AZERO(&pooladdr->addr.v.a.addr, af))
436 printf("%s", pooladdr->ifname);
437 else {
438 printf("(%s ", pooladdr->ifname);
439 print_addr(&pooladdr->addr, af, 0);
440 printf(")");
441 }
442 break;
443 default:
444 break;
445 }
446 if (TAILQ_NEXT(pooladdr, entries) != NULL)
447 printf(", ");
448 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
449 printf(" }");
450 }
451 switch (id) {
452 case PF_NAT:
453 if ((p1 != PF_NAT_PROXY_PORT_LOW ||
454 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) {
455 if (p1 == p2)
456 printf(" port %u", p1);
457 else
458 printf(" port %u:%u", p1, p2);
459 }
460 break;
461 case PF_RDR:
462 if (p1) {
463 printf(" port %u", p1);
464 if (p2 && (p2 != p1))
465 printf(":%u", p2);
466 }
467 break;
468 default:
469 break;
470 }
471 switch (pool->opts & PF_POOL_TYPEMASK) {
472 case PF_POOL_NONE:
473 break;
474 case PF_POOL_BITMASK:
475 printf(" bitmask");
476 break;
477 case PF_POOL_RANDOM:
478 printf(" random");
479 break;
480 case PF_POOL_SRCHASH:
481 printf(" source-hash 0x%08x%08x%08x%08x",
482 pool->key.key32[0], pool->key.key32[1],
483 pool->key.key32[2], pool->key.key32[3]);
484 break;
485 case PF_POOL_ROUNDROBIN:
486 printf(" round-robin");
487 break;
488 }
489 if (pool->opts & PF_POOL_STICKYADDR)
490 printf(" sticky-address");
491 if (id == PF_NAT && p1 == 0 && p2 == 0)
492 printf(" static-port");
493 if (pool->mape.offset > 0)
494 printf(" map-e-portset %u/%u/%u",
495 pool->mape.offset, pool->mape.psidlen, pool->mape.psid);
496 }
497
498 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES;
499 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES;
500 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES;
501 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES;
502
503 void
print_status(struct pfctl_status * s,struct pfctl_syncookies * cookies,int opts)504 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts)
505 {
506 struct pfctl_status_counter *c;
507 char statline[80], *running;
508 time_t runtime;
509 int i;
510 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1];
511 static const char hex[] = "0123456789abcdef";
512
513 runtime = time(NULL) - s->since;
514 running = s->running ? "Enabled" : "Disabled";
515
516 if (s->since) {
517 unsigned int sec, min, hrs, day = runtime;
518
519 sec = day % 60;
520 day /= 60;
521 min = day % 60;
522 day /= 60;
523 hrs = day % 24;
524 day /= 24;
525 snprintf(statline, sizeof(statline),
526 "Status: %s for %u days %.2u:%.2u:%.2u",
527 running, day, hrs, min, sec);
528 } else
529 snprintf(statline, sizeof(statline), "Status: %s", running);
530 printf("%-44s", statline);
531 switch (s->debug) {
532 case PF_DEBUG_NONE:
533 printf("%15s\n\n", "Debug: None");
534 break;
535 case PF_DEBUG_URGENT:
536 printf("%15s\n\n", "Debug: Urgent");
537 break;
538 case PF_DEBUG_MISC:
539 printf("%15s\n\n", "Debug: Misc");
540 break;
541 case PF_DEBUG_NOISY:
542 printf("%15s\n\n", "Debug: Loud");
543 break;
544 }
545
546 if (opts & PF_OPT_VERBOSE) {
547 printf("Hostid: 0x%08x\n", s->hostid);
548
549 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) {
550 buf[i + i] = hex[s->pf_chksum[i] >> 4];
551 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f];
552 }
553 buf[i + i] = '\0';
554 printf("Checksum: 0x%s\n\n", buf);
555 }
556
557 if (s->ifname[0] != 0) {
558 printf("Interface Stats for %-16s %5s %16s\n",
559 s->ifname, "IPv4", "IPv6");
560 printf(" %-25s %14llu %16llu\n", "Bytes In",
561 (unsigned long long)s->bcounters[0][0],
562 (unsigned long long)s->bcounters[1][0]);
563 printf(" %-25s %14llu %16llu\n", "Bytes Out",
564 (unsigned long long)s->bcounters[0][1],
565 (unsigned long long)s->bcounters[1][1]);
566 printf(" Packets In\n");
567 printf(" %-23s %14llu %16llu\n", "Passed",
568 (unsigned long long)s->pcounters[0][0][PF_PASS],
569 (unsigned long long)s->pcounters[1][0][PF_PASS]);
570 printf(" %-23s %14llu %16llu\n", "Blocked",
571 (unsigned long long)s->pcounters[0][0][PF_DROP],
572 (unsigned long long)s->pcounters[1][0][PF_DROP]);
573 printf(" Packets Out\n");
574 printf(" %-23s %14llu %16llu\n", "Passed",
575 (unsigned long long)s->pcounters[0][1][PF_PASS],
576 (unsigned long long)s->pcounters[1][1][PF_PASS]);
577 printf(" %-23s %14llu %16llu\n\n", "Blocked",
578 (unsigned long long)s->pcounters[0][1][PF_DROP],
579 (unsigned long long)s->pcounters[1][1][PF_DROP]);
580 }
581 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
582 printf(" %-25s %14ju %14s\n", "current entries", s->states, "");
583 TAILQ_FOREACH(c, &s->fcounters, entry) {
584 printf(" %-25s %14ju ", c->name, c->counter);
585 if (runtime > 0)
586 printf("%14.1f/s\n",
587 (double)c->counter / (double)runtime);
588 else
589 printf("%14s\n", "");
590 }
591 if (opts & PF_OPT_VERBOSE) {
592 printf("Source Tracking Table\n");
593 printf(" %-25s %14ju %14s\n", "current entries",
594 s->src_nodes, "");
595 TAILQ_FOREACH(c, &s->scounters, entry) {
596 printf(" %-25s %14ju ", c->name, c->counter);
597 if (runtime > 0)
598 printf("%14.1f/s\n",
599 (double)c->counter / (double)runtime);
600 else
601 printf("%14s\n", "");
602 }
603 }
604 printf("Counters\n");
605 TAILQ_FOREACH(c, &s->counters, entry) {
606 printf(" %-25s %14ju ", c->name, c->counter);
607 if (runtime > 0)
608 printf("%14.1f/s\n",
609 (double)c->counter / (double)runtime);
610 else
611 printf("%14s\n", "");
612 }
613 if (opts & PF_OPT_VERBOSE) {
614 printf("Limit Counters\n");
615 TAILQ_FOREACH(c, &s->lcounters, entry) {
616 printf(" %-25s %14ju ", c->name, c->counter);
617 if (runtime > 0)
618 printf("%14.1f/s\n",
619 (double)c->counter / (double)runtime);
620 else
621 printf("%14s\n", "");
622 }
623
624 printf("Syncookies\n");
625 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE);
626 printf(" %-25s %s\n", "mode",
627 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]);
628 printf(" %-25s %s\n", "active",
629 s->syncookies_active ? "active" : "inactive");
630 if (opts & PF_OPT_VERBOSE2) {
631 printf(" %-25s %d %%\n", "highwater", cookies->highwater);
632 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater);
633 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states);
634 }
635 printf("Reassemble %24s %s\n",
636 s->reass & PF_REASS_ENABLED ? "yes" : "no",
637 s->reass & PF_REASS_NODF ? "no-df" : ""
638 );
639 }
640 }
641
642 void
print_running(struct pfctl_status * status)643 print_running(struct pfctl_status *status)
644 {
645 printf("%s\n", status->running ? "Enabled" : "Disabled");
646 }
647
648 void
print_src_node(struct pf_src_node * sn,int opts)649 print_src_node(struct pf_src_node *sn, int opts)
650 {
651 struct pf_addr_wrap aw;
652 int min, sec;
653
654 memset(&aw, 0, sizeof(aw));
655 if (sn->af == AF_INET)
656 aw.v.a.mask.addr32[0] = 0xffffffff;
657 else
658 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
659
660 aw.v.a.addr = sn->addr;
661 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
662 printf(" -> ");
663 aw.v.a.addr = sn->raddr;
664 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
665 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states,
666 sn->conn, sn->conn_rate.count / 1000,
667 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds);
668 if (opts & PF_OPT_VERBOSE) {
669 sec = sn->creation % 60;
670 sn->creation /= 60;
671 min = sn->creation % 60;
672 sn->creation /= 60;
673 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec);
674 if (sn->states == 0) {
675 sec = sn->expire % 60;
676 sn->expire /= 60;
677 min = sn->expire % 60;
678 sn->expire /= 60;
679 printf(", expires in %.2u:%.2u:%.2u",
680 sn->expire, min, sec);
681 }
682 printf(", %llu pkts, %llu bytes",
683 #ifdef __FreeBSD__
684 (unsigned long long)(sn->packets[0] + sn->packets[1]),
685 (unsigned long long)(sn->bytes[0] + sn->bytes[1]));
686 #else
687 sn->packets[0] + sn->packets[1],
688 sn->bytes[0] + sn->bytes[1]);
689 #endif
690 switch (sn->ruletype) {
691 case PF_NAT:
692 if (sn->rule.nr != -1)
693 printf(", nat rule %u", sn->rule.nr);
694 break;
695 case PF_RDR:
696 if (sn->rule.nr != -1)
697 printf(", rdr rule %u", sn->rule.nr);
698 break;
699 case PF_PASS:
700 case PF_MATCH:
701 if (sn->rule.nr != -1)
702 printf(", filter rule %u", sn->rule.nr);
703 break;
704 }
705 printf("\n");
706 }
707 }
708
709 static void
print_eth_addr(const struct pfctl_eth_addr * a)710 print_eth_addr(const struct pfctl_eth_addr *a)
711 {
712 int i, masklen = ETHER_ADDR_LEN * 8;
713 bool seen_unset = false;
714
715 for (i = 0; i < ETHER_ADDR_LEN; i++) {
716 if (a->addr[i] != 0)
717 break;
718 }
719
720 /* Unset, so don't print anything. */
721 if (i == ETHER_ADDR_LEN)
722 return;
723
724 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "",
725 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4],
726 a->addr[5]);
727
728 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) {
729 bool isset = a->mask[i / 8] & (1 << i % 8);
730
731 if (! seen_unset) {
732 if (isset)
733 continue;
734 seen_unset = true;
735 masklen = i;
736 } else {
737 /* Not actually a continuous mask, so print the whole
738 * thing. */
739 if (isset)
740 break;
741 continue;
742 }
743 }
744
745 if (masklen == (ETHER_ADDR_LEN * 8))
746 return;
747
748 if (i == (ETHER_ADDR_LEN * 8)) {
749 printf("/%d", masklen);
750 return;
751 }
752
753 printf("&%02x:%02x:%02x:%02x:%02x:%02x",
754 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4],
755 a->mask[5]);
756 }
757
758 void
print_eth_rule(struct pfctl_eth_rule * r,const char * anchor_call,int rule_numbers)759 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call,
760 int rule_numbers)
761 {
762 static const char *actiontypes[] = { "pass", "block", "", "", "", "",
763 "", "", "", "", "", "", "match" };
764
765 int i;
766
767 if (rule_numbers)
768 printf("@%u ", r->nr);
769
770 printf("ether ");
771 if (anchor_call[0]) {
772 if (anchor_call[0] == '_') {
773 printf("anchor");
774 } else
775 printf("anchor \"%s\"", anchor_call);
776 } else {
777 printf("%s", actiontypes[r->action]);
778 }
779 if (r->direction == PF_IN)
780 printf(" in");
781 else if (r->direction == PF_OUT)
782 printf(" out");
783
784 if (r->quick)
785 printf(" quick");
786 if (r->ifname[0]) {
787 if (r->ifnot)
788 printf(" on ! %s", r->ifname);
789 else
790 printf(" on %s", r->ifname);
791 }
792 if (r->bridge_to[0])
793 printf(" bridge-to %s", r->bridge_to);
794 if (r->proto)
795 printf(" proto 0x%04x", r->proto);
796
797 if (r->src.isset) {
798 printf(" from ");
799 print_eth_addr(&r->src);
800 }
801 if (r->dst.isset) {
802 printf(" to ");
803 print_eth_addr(&r->dst);
804 }
805 printf(" l3");
806 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst,
807 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0,
808 0, 0);
809
810 i = 0;
811 while (r->label[i][0])
812 printf(" label \"%s\"", r->label[i++]);
813 if (r->ridentifier)
814 printf(" ridentifier %u", r->ridentifier);
815
816 if (r->qname[0])
817 printf(" queue %s", r->qname);
818 if (r->tagname[0])
819 printf(" tag %s", r->tagname);
820 if (r->match_tagname[0]) {
821 if (r->match_tag_not)
822 printf(" !");
823 printf(" tagged %s", r->match_tagname);
824 }
825 if (r->dnpipe)
826 printf(" %s %d",
827 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
828 r->dnpipe);
829 }
830
831 void
print_rule(struct pfctl_rule * r,const char * anchor_call,int verbose,int numeric)832 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric)
833 {
834 static const char *actiontypes[] = { "pass", "block", "scrub",
835 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr",
836 "", "", "match"};
837 static const char *anchortypes[] = { "anchor", "anchor", "anchor",
838 "anchor", "nat-anchor", "nat-anchor", "binat-anchor",
839 "binat-anchor", "rdr-anchor", "rdr-anchor" };
840 int i, opts;
841 char *p;
842
843 if (verbose)
844 printf("@%d ", r->nr);
845 if (r->action == PF_MATCH)
846 printf("match");
847 else if (r->action > PF_NORDR)
848 printf("action(%d)", r->action);
849 else if (anchor_call[0]) {
850 p = strrchr(anchor_call, '/');
851 if (p ? p[1] == '_' : anchor_call[0] == '_')
852 printf("%s", anchortypes[r->action]);
853 else
854 printf("%s \"%s\"", anchortypes[r->action],
855 anchor_call);
856 } else {
857 printf("%s", actiontypes[r->action]);
858 if (r->natpass)
859 printf(" pass");
860 }
861 if (r->action == PF_DROP) {
862 if (r->rule_flag & PFRULE_RETURN)
863 printf(" return");
864 else if (r->rule_flag & PFRULE_RETURNRST) {
865 if (!r->return_ttl)
866 printf(" return-rst");
867 else
868 printf(" return-rst(ttl %d)", r->return_ttl);
869 } else if (r->rule_flag & PFRULE_RETURNICMP) {
870 const struct icmpcodeent *ic, *ic6;
871
872 ic = geticmpcodebynumber(r->return_icmp >> 8,
873 r->return_icmp & 255, AF_INET);
874 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
875 r->return_icmp6 & 255, AF_INET6);
876
877 switch (r->af) {
878 case AF_INET:
879 printf(" return-icmp");
880 if (ic == NULL)
881 printf("(%u)", r->return_icmp & 255);
882 else
883 printf("(%s)", ic->name);
884 break;
885 case AF_INET6:
886 printf(" return-icmp6");
887 if (ic6 == NULL)
888 printf("(%u)", r->return_icmp6 & 255);
889 else
890 printf("(%s)", ic6->name);
891 break;
892 default:
893 printf(" return-icmp");
894 if (ic == NULL)
895 printf("(%u, ", r->return_icmp & 255);
896 else
897 printf("(%s, ", ic->name);
898 if (ic6 == NULL)
899 printf("%u)", r->return_icmp6 & 255);
900 else
901 printf("%s)", ic6->name);
902 break;
903 }
904 } else
905 printf(" drop");
906 }
907 if (r->direction == PF_IN)
908 printf(" in");
909 else if (r->direction == PF_OUT)
910 printf(" out");
911 if (r->log) {
912 printf(" log");
913 if (r->log & ~PF_LOG || r->logif) {
914 int count = 0;
915
916 printf(" (");
917 if (r->log & PF_LOG_ALL)
918 printf("%sall", count++ ? ", " : "");
919 if (r->log & PF_LOG_SOCKET_LOOKUP)
920 printf("%suser", count++ ? ", " : "");
921 if (r->logif)
922 printf("%sto pflog%u", count++ ? ", " : "",
923 r->logif);
924 printf(")");
925 }
926 }
927 if (r->quick)
928 printf(" quick");
929 if (r->ifname[0]) {
930 if (r->ifnot)
931 printf(" on ! %s", r->ifname);
932 else
933 printf(" on %s", r->ifname);
934 }
935 if (r->rt) {
936 if (r->rt == PF_ROUTETO)
937 printf(" route-to");
938 else if (r->rt == PF_REPLYTO)
939 printf(" reply-to");
940 else if (r->rt == PF_DUPTO)
941 printf(" dup-to");
942 printf(" ");
943 print_pool(&r->rpool, 0, 0, r->af, PF_PASS);
944 }
945 if (r->af) {
946 if (r->af == AF_INET)
947 printf(" inet");
948 else
949 printf(" inet6");
950 }
951 if (r->proto) {
952 const char *protoname;
953
954 if ((protoname = pfctl_proto2name(r->proto)) != NULL)
955 printf(" proto %s", protoname);
956 else
957 printf(" proto %u", r->proto);
958 }
959 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto,
960 verbose, numeric);
961 if (r->uid.op)
962 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user",
963 UID_MAX);
964 if (r->gid.op)
965 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group",
966 GID_MAX);
967 if (r->flags || r->flagset) {
968 printf(" flags ");
969 print_flags(r->flags);
970 printf("/");
971 print_flags(r->flagset);
972 } else if ((r->action == PF_PASS || r->action == PF_MATCH) &&
973 (!r->proto || r->proto == IPPROTO_TCP) &&
974 !(r->rule_flag & PFRULE_FRAGMENT) &&
975 !anchor_call[0] && r->keep_state)
976 printf(" flags any");
977 if (r->type) {
978 const struct icmptypeent *it;
979
980 it = geticmptypebynumber(r->type-1, r->af);
981 if (r->af != AF_INET6)
982 printf(" icmp-type");
983 else
984 printf(" icmp6-type");
985 if (it != NULL)
986 printf(" %s", it->name);
987 else
988 printf(" %u", r->type-1);
989 if (r->code) {
990 const struct icmpcodeent *ic;
991
992 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
993 if (ic != NULL)
994 printf(" code %s", ic->name);
995 else
996 printf(" code %u", r->code-1);
997 }
998 }
999 if (r->tos)
1000 printf(" tos 0x%2.2x", r->tos);
1001 if (r->prio)
1002 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio);
1003 if (r->scrub_flags & PFSTATE_SETMASK) {
1004 char *comma = "";
1005 printf(" set (");
1006 if (r->scrub_flags & PFSTATE_SETPRIO) {
1007 if (r->set_prio[0] == r->set_prio[1])
1008 printf("%s prio %u", comma, r->set_prio[0]);
1009 else
1010 printf("%s prio(%u, %u)", comma, r->set_prio[0],
1011 r->set_prio[1]);
1012 comma = ",";
1013 }
1014 if (r->scrub_flags & PFSTATE_SETTOS) {
1015 printf("%s tos 0x%2.2x", comma, r->set_tos);
1016 comma = ",";
1017 }
1018 printf(" )");
1019 }
1020 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0])
1021 printf(" no state");
1022 else if (r->keep_state == PF_STATE_NORMAL)
1023 printf(" keep state");
1024 else if (r->keep_state == PF_STATE_MODULATE)
1025 printf(" modulate state");
1026 else if (r->keep_state == PF_STATE_SYNPROXY)
1027 printf(" synproxy state");
1028 if (r->prob) {
1029 char buf[20];
1030
1031 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
1032 for (i = strlen(buf)-1; i > 0; i--) {
1033 if (buf[i] == '0')
1034 buf[i] = '\0';
1035 else {
1036 if (buf[i] == '.')
1037 buf[i] = '\0';
1038 break;
1039 }
1040 }
1041 printf(" probability %s%%", buf);
1042 }
1043 opts = 0;
1044 if (r->max_states || r->max_src_nodes || r->max_src_states)
1045 opts = 1;
1046 if (r->rule_flag & PFRULE_NOSYNC)
1047 opts = 1;
1048 if (r->rule_flag & PFRULE_SRCTRACK)
1049 opts = 1;
1050 if (r->rule_flag & PFRULE_IFBOUND)
1051 opts = 1;
1052 if (r->rule_flag & PFRULE_STATESLOPPY)
1053 opts = 1;
1054 if (r->rule_flag & PFRULE_PFLOW)
1055 opts = 1;
1056 for (i = 0; !opts && i < PFTM_MAX; ++i)
1057 if (r->timeout[i])
1058 opts = 1;
1059 if (opts) {
1060 printf(" (");
1061 if (r->max_states) {
1062 printf("max %u", r->max_states);
1063 opts = 0;
1064 }
1065 if (r->rule_flag & PFRULE_NOSYNC) {
1066 if (!opts)
1067 printf(", ");
1068 printf("no-sync");
1069 opts = 0;
1070 }
1071 if (r->rule_flag & PFRULE_SRCTRACK) {
1072 if (!opts)
1073 printf(", ");
1074 printf("source-track");
1075 if (r->rule_flag & PFRULE_RULESRCTRACK)
1076 printf(" rule");
1077 else
1078 printf(" global");
1079 opts = 0;
1080 }
1081 if (r->max_src_states) {
1082 if (!opts)
1083 printf(", ");
1084 printf("max-src-states %u", r->max_src_states);
1085 opts = 0;
1086 }
1087 if (r->max_src_conn) {
1088 if (!opts)
1089 printf(", ");
1090 printf("max-src-conn %u", r->max_src_conn);
1091 opts = 0;
1092 }
1093 if (r->max_src_conn_rate.limit) {
1094 if (!opts)
1095 printf(", ");
1096 printf("max-src-conn-rate %u/%u",
1097 r->max_src_conn_rate.limit,
1098 r->max_src_conn_rate.seconds);
1099 opts = 0;
1100 }
1101 if (r->max_src_nodes) {
1102 if (!opts)
1103 printf(", ");
1104 printf("max-src-nodes %u", r->max_src_nodes);
1105 opts = 0;
1106 }
1107 if (r->overload_tblname[0]) {
1108 if (!opts)
1109 printf(", ");
1110 printf("overload <%s>", r->overload_tblname);
1111 if (r->flush)
1112 printf(" flush");
1113 if (r->flush & PF_FLUSH_GLOBAL)
1114 printf(" global");
1115 }
1116 if (r->rule_flag & PFRULE_IFBOUND) {
1117 if (!opts)
1118 printf(", ");
1119 printf("if-bound");
1120 opts = 0;
1121 }
1122 if (r->rule_flag & PFRULE_STATESLOPPY) {
1123 if (!opts)
1124 printf(", ");
1125 printf("sloppy");
1126 opts = 0;
1127 }
1128 if (r->rule_flag & PFRULE_PFLOW) {
1129 if (!opts)
1130 printf(", ");
1131 printf("pflow");
1132 opts = 0;
1133 }
1134 for (i = 0; i < PFTM_MAX; ++i)
1135 if (r->timeout[i]) {
1136 int j;
1137
1138 if (!opts)
1139 printf(", ");
1140 opts = 0;
1141 for (j = 0; pf_timeouts[j].name != NULL;
1142 ++j)
1143 if (pf_timeouts[j].timeout == i)
1144 break;
1145 printf("%s %u", pf_timeouts[j].name == NULL ?
1146 "inv.timeout" : pf_timeouts[j].name,
1147 r->timeout[i]);
1148 }
1149 printf(")");
1150 }
1151 if (r->allow_opts)
1152 printf(" allow-opts");
1153 if (r->rule_flag & PFRULE_FRAGMENT)
1154 printf(" fragment");
1155 if (r->action == PF_SCRUB) {
1156 /* Scrub flags for old-style scrub. */
1157 if (r->rule_flag & PFRULE_NODF)
1158 printf(" no-df");
1159 if (r->rule_flag & PFRULE_RANDOMID)
1160 printf(" random-id");
1161 if (r->min_ttl)
1162 printf(" min-ttl %d", r->min_ttl);
1163 if (r->max_mss)
1164 printf(" max-mss %d", r->max_mss);
1165 if (r->rule_flag & PFRULE_SET_TOS)
1166 printf(" set-tos 0x%2.2x", r->set_tos);
1167 if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
1168 printf(" reassemble tcp");
1169 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */
1170 printf(" fragment %sreassemble",
1171 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : "");
1172 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) {
1173 /* Scrub actions on normal rules. */
1174 printf(" scrub(");
1175 if (r->scrub_flags & PFSTATE_NODF)
1176 printf(" no-df");
1177 if (r->scrub_flags & PFSTATE_RANDOMID)
1178 printf(" random-id");
1179 if (r->min_ttl)
1180 printf(" min-ttl %d", r->min_ttl);
1181 if (r->scrub_flags & PFSTATE_SETTOS)
1182 printf(" set-tos 0x%2.2x", r->set_tos);
1183 if (r->scrub_flags & PFSTATE_SCRUB_TCP)
1184 printf(" reassemble tcp");
1185 if (r->max_mss)
1186 printf(" max-mss %d", r->max_mss);
1187 printf(")");
1188 }
1189 i = 0;
1190 while (r->label[i][0])
1191 printf(" label \"%s\"", r->label[i++]);
1192 if (r->ridentifier)
1193 printf(" ridentifier %u", r->ridentifier);
1194 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */
1195 if (r->dnrpipe)
1196 printf(" %s(%d, %d)",
1197 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1198 r->dnpipe, r->dnrpipe);
1199 else if (r->dnpipe)
1200 printf(" %s %d",
1201 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1202 r->dnpipe);
1203 if (r->qname[0] && r->pqname[0])
1204 printf(" queue(%s, %s)", r->qname, r->pqname);
1205 else if (r->qname[0])
1206 printf(" queue %s", r->qname);
1207 if (r->tagname[0])
1208 printf(" tag %s", r->tagname);
1209 if (r->match_tagname[0]) {
1210 if (r->match_tag_not)
1211 printf(" !");
1212 printf(" tagged %s", r->match_tagname);
1213 }
1214 if (r->rtableid != -1)
1215 printf(" rtable %u", r->rtableid);
1216 if (r->divert.port) {
1217 #ifdef __FreeBSD__
1218 printf(" divert-to %u", ntohs(r->divert.port));
1219 #else
1220 if (PF_AZERO(&r->divert.addr, r->af)) {
1221 printf(" divert-reply");
1222 } else {
1223 /* XXX cut&paste from print_addr */
1224 char buf[48];
1225
1226 printf(" divert-to ");
1227 if (inet_ntop(r->af, &r->divert.addr, buf,
1228 sizeof(buf)) == NULL)
1229 printf("?");
1230 else
1231 printf("%s", buf);
1232 printf(" port %u", ntohs(r->divert.port));
1233 }
1234 #endif
1235 }
1236 if (!anchor_call[0] && (r->action == PF_NAT ||
1237 r->action == PF_BINAT || r->action == PF_RDR)) {
1238 printf(" -> ");
1239 print_pool(&r->rpool, r->rpool.proxy_port[0],
1240 r->rpool.proxy_port[1], r->af, r->action);
1241 }
1242 }
1243
1244 void
print_tabledef(const char * name,int flags,int addrs,struct node_tinithead * nodes)1245 print_tabledef(const char *name, int flags, int addrs,
1246 struct node_tinithead *nodes)
1247 {
1248 struct node_tinit *ti, *nti;
1249 struct node_host *h;
1250
1251 printf("table <%s>", name);
1252 if (flags & PFR_TFLAG_CONST)
1253 printf(" const");
1254 if (flags & PFR_TFLAG_PERSIST)
1255 printf(" persist");
1256 if (flags & PFR_TFLAG_COUNTERS)
1257 printf(" counters");
1258 SIMPLEQ_FOREACH(ti, nodes, entries) {
1259 if (ti->file) {
1260 printf(" file \"%s\"", ti->file);
1261 continue;
1262 }
1263 printf(" {");
1264 for (;;) {
1265 for (h = ti->host; h != NULL; h = h->next) {
1266 printf(h->not ? " !" : " ");
1267 print_addr(&h->addr, h->af, 0);
1268 }
1269 nti = SIMPLEQ_NEXT(ti, entries);
1270 if (nti != NULL && nti->file == NULL)
1271 ti = nti; /* merge lists */
1272 else
1273 break;
1274 }
1275 printf(" }");
1276 }
1277 if (addrs && SIMPLEQ_EMPTY(nodes))
1278 printf(" { }");
1279 printf("\n");
1280 }
1281
1282 int
parse_flags(char * s)1283 parse_flags(char *s)
1284 {
1285 char *p, *q;
1286 u_int8_t f = 0;
1287
1288 for (p = s; *p; p++) {
1289 if ((q = strchr(tcpflags, *p)) == NULL)
1290 return -1;
1291 else
1292 f |= 1 << (q - tcpflags);
1293 }
1294 return (f ? f : PF_TH_ALL);
1295 }
1296
1297 void
set_ipmask(struct node_host * h,u_int8_t b)1298 set_ipmask(struct node_host *h, u_int8_t b)
1299 {
1300 struct pf_addr *m, *n;
1301 int i, j = 0;
1302
1303 m = &h->addr.v.a.mask;
1304 memset(m, 0, sizeof(*m));
1305
1306 while (b >= 32) {
1307 m->addr32[j++] = 0xffffffff;
1308 b -= 32;
1309 }
1310 for (i = 31; i > 31-b; --i)
1311 m->addr32[j] |= (1 << i);
1312 if (b)
1313 m->addr32[j] = htonl(m->addr32[j]);
1314
1315 /* Mask off bits of the address that will never be used. */
1316 n = &h->addr.v.a.addr;
1317 if (h->addr.type == PF_ADDR_ADDRMASK)
1318 for (i = 0; i < 4; i++)
1319 n->addr32[i] = n->addr32[i] & m->addr32[i];
1320 }
1321
1322 int
check_netmask(struct node_host * h,sa_family_t af)1323 check_netmask(struct node_host *h, sa_family_t af)
1324 {
1325 struct node_host *n = NULL;
1326 struct pf_addr *m;
1327
1328 for (n = h; n != NULL; n = n->next) {
1329 if (h->addr.type == PF_ADDR_TABLE)
1330 continue;
1331 m = &h->addr.v.a.mask;
1332 /* netmasks > 32 bit are invalid on v4 */
1333 if (af == AF_INET &&
1334 (m->addr32[1] || m->addr32[2] || m->addr32[3])) {
1335 fprintf(stderr, "netmask %u invalid for IPv4 address\n",
1336 unmask(m, AF_INET6));
1337 return (1);
1338 }
1339 }
1340 return (0);
1341 }
1342
1343 struct node_host *
gen_dynnode(struct node_host * h,sa_family_t af)1344 gen_dynnode(struct node_host *h, sa_family_t af)
1345 {
1346 struct node_host *n;
1347 struct pf_addr *m;
1348
1349 if (h->addr.type != PF_ADDR_DYNIFTL)
1350 return (NULL);
1351
1352 if ((n = calloc(1, sizeof(*n))) == NULL)
1353 return (NULL);
1354 bcopy(h, n, sizeof(*n));
1355 n->ifname = NULL;
1356 n->next = NULL;
1357 n->tail = NULL;
1358
1359 /* fix up netmask */
1360 m = &n->addr.v.a.mask;
1361 if (af == AF_INET && unmask(m, AF_INET6) > 32)
1362 set_ipmask(n, 32);
1363
1364 return (n);
1365 }
1366
1367 /* interface lookup routines */
1368
1369 static struct node_host *iftab;
1370
1371 /*
1372 * Retrieve the list of groups this interface is a member of and make sure
1373 * each group is in the group map.
1374 */
1375 static void
ifa_add_groups_to_map(char * ifa_name)1376 ifa_add_groups_to_map(char *ifa_name)
1377 {
1378 int s, len;
1379 struct ifgroupreq ifgr;
1380 struct ifg_req *ifg;
1381
1382 s = get_query_socket();
1383
1384 /* Get size of group list for this interface */
1385 memset(&ifgr, 0, sizeof(ifgr));
1386 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ);
1387 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1388 err(1, "SIOCGIFGROUP");
1389
1390 /* Retrieve group list for this interface */
1391 len = ifgr.ifgr_len;
1392 ifgr.ifgr_groups =
1393 (struct ifg_req *)calloc(len / sizeof(struct ifg_req),
1394 sizeof(struct ifg_req));
1395 if (ifgr.ifgr_groups == NULL)
1396 err(1, "calloc");
1397 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1398 err(1, "SIOCGIFGROUP");
1399
1400 ifg = ifgr.ifgr_groups;
1401 for (; ifg && len >= sizeof(struct ifg_req); ifg++) {
1402 len -= sizeof(struct ifg_req);
1403 if (strcmp(ifg->ifgrq_group, "all")) {
1404 ENTRY item;
1405 ENTRY *ret_item;
1406 int *answer;
1407
1408 item.key = ifg->ifgrq_group;
1409 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) {
1410 struct ifgroupreq ifgr2;
1411
1412 /* Don't know the answer yet */
1413 if ((answer = malloc(sizeof(int))) == NULL)
1414 err(1, "malloc");
1415
1416 bzero(&ifgr2, sizeof(ifgr2));
1417 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group,
1418 sizeof(ifgr2.ifgr_name));
1419 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0)
1420 *answer = ifgr2.ifgr_len;
1421 else
1422 *answer = 0;
1423
1424 item.key = strdup(ifg->ifgrq_group);
1425 item.data = answer;
1426 if (hsearch_r(item, ENTER, &ret_item,
1427 &isgroup_map) == 0)
1428 err(1, "interface group query response"
1429 " map insert");
1430 }
1431 }
1432 }
1433 free(ifgr.ifgr_groups);
1434 }
1435
1436 void
ifa_load(void)1437 ifa_load(void)
1438 {
1439 struct ifaddrs *ifap, *ifa;
1440 struct node_host *n = NULL, *h = NULL;
1441
1442 if (getifaddrs(&ifap) < 0)
1443 err(1, "getifaddrs");
1444
1445 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1446 if (!(ifa->ifa_addr->sa_family == AF_INET ||
1447 ifa->ifa_addr->sa_family == AF_INET6 ||
1448 ifa->ifa_addr->sa_family == AF_LINK))
1449 continue;
1450 n = calloc(1, sizeof(struct node_host));
1451 if (n == NULL)
1452 err(1, "address: calloc");
1453 n->af = ifa->ifa_addr->sa_family;
1454 n->ifa_flags = ifa->ifa_flags;
1455 #ifdef __KAME__
1456 if (n->af == AF_INET6 &&
1457 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
1458 ifa->ifa_addr)->sin6_addr) &&
1459 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
1460 0) {
1461 struct sockaddr_in6 *sin6;
1462
1463 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1464 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
1465 sin6->sin6_addr.s6_addr[3];
1466 sin6->sin6_addr.s6_addr[2] = 0;
1467 sin6->sin6_addr.s6_addr[3] = 0;
1468 }
1469 #endif
1470 n->ifindex = 0;
1471 if (n->af == AF_INET) {
1472 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *)
1473 ifa->ifa_addr)->sin_addr.s_addr,
1474 sizeof(struct in_addr));
1475 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *)
1476 ifa->ifa_netmask)->sin_addr.s_addr,
1477 sizeof(struct in_addr));
1478 if (ifa->ifa_broadaddr != NULL)
1479 memcpy(&n->bcast, &((struct sockaddr_in *)
1480 ifa->ifa_broadaddr)->sin_addr.s_addr,
1481 sizeof(struct in_addr));
1482 if (ifa->ifa_dstaddr != NULL)
1483 memcpy(&n->peer, &((struct sockaddr_in *)
1484 ifa->ifa_dstaddr)->sin_addr.s_addr,
1485 sizeof(struct in_addr));
1486 } else if (n->af == AF_INET6) {
1487 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *)
1488 ifa->ifa_addr)->sin6_addr.s6_addr,
1489 sizeof(struct in6_addr));
1490 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *)
1491 ifa->ifa_netmask)->sin6_addr.s6_addr,
1492 sizeof(struct in6_addr));
1493 if (ifa->ifa_broadaddr != NULL)
1494 memcpy(&n->bcast, &((struct sockaddr_in6 *)
1495 ifa->ifa_broadaddr)->sin6_addr.s6_addr,
1496 sizeof(struct in6_addr));
1497 if (ifa->ifa_dstaddr != NULL)
1498 memcpy(&n->peer, &((struct sockaddr_in6 *)
1499 ifa->ifa_dstaddr)->sin6_addr.s6_addr,
1500 sizeof(struct in6_addr));
1501 n->ifindex = ((struct sockaddr_in6 *)
1502 ifa->ifa_addr)->sin6_scope_id;
1503 } else if (n->af == AF_LINK) {
1504 ifa_add_groups_to_map(ifa->ifa_name);
1505 }
1506 if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
1507 err(1, "ifa_load: strdup");
1508 n->next = NULL;
1509 n->tail = n;
1510 if (h == NULL)
1511 h = n;
1512 else {
1513 h->tail->next = n;
1514 h->tail = n;
1515 }
1516 }
1517
1518 iftab = h;
1519 freeifaddrs(ifap);
1520 }
1521
1522 static int
get_socket_domain(void)1523 get_socket_domain(void)
1524 {
1525 int sdom;
1526
1527 sdom = AF_UNSPEC;
1528 #ifdef WITH_INET6
1529 if (sdom == AF_UNSPEC && feature_present("inet6"))
1530 sdom = AF_INET6;
1531 #endif
1532 #ifdef WITH_INET
1533 if (sdom == AF_UNSPEC && feature_present("inet"))
1534 sdom = AF_INET;
1535 #endif
1536 if (sdom == AF_UNSPEC)
1537 sdom = AF_LINK;
1538
1539 return (sdom);
1540 }
1541
1542 int
get_query_socket(void)1543 get_query_socket(void)
1544 {
1545 static int s = -1;
1546
1547 if (s == -1) {
1548 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1)
1549 err(1, "socket");
1550 }
1551
1552 return (s);
1553 }
1554
1555 /*
1556 * Returns the response len if the name is a group, otherwise returns 0.
1557 */
1558 static int
is_a_group(char * name)1559 is_a_group(char *name)
1560 {
1561 ENTRY item;
1562 ENTRY *ret_item;
1563
1564 item.key = name;
1565 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0)
1566 return (0);
1567
1568 return (*(int *)ret_item->data);
1569 }
1570
1571 struct node_host *
ifa_exists(char * ifa_name)1572 ifa_exists(char *ifa_name)
1573 {
1574 struct node_host *n;
1575
1576 if (iftab == NULL)
1577 ifa_load();
1578
1579 /* check whether this is a group */
1580 if (is_a_group(ifa_name)) {
1581 /* fake a node_host */
1582 if ((n = calloc(1, sizeof(*n))) == NULL)
1583 err(1, "calloc");
1584 if ((n->ifname = strdup(ifa_name)) == NULL)
1585 err(1, "strdup");
1586 return (n);
1587 }
1588
1589 for (n = iftab; n; n = n->next) {
1590 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
1591 return (n);
1592 }
1593
1594 return (NULL);
1595 }
1596
1597 struct node_host *
ifa_grouplookup(char * ifa_name,int flags)1598 ifa_grouplookup(char *ifa_name, int flags)
1599 {
1600 struct ifg_req *ifg;
1601 struct ifgroupreq ifgr;
1602 int s, len;
1603 struct node_host *n, *h = NULL;
1604
1605 s = get_query_socket();
1606 len = is_a_group(ifa_name);
1607 if (len == 0)
1608 return (NULL);
1609 bzero(&ifgr, sizeof(ifgr));
1610 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
1611 ifgr.ifgr_len = len;
1612 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
1613 err(1, "calloc");
1614 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
1615 err(1, "SIOCGIFGMEMB");
1616
1617 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req);
1618 ifg++) {
1619 len -= sizeof(struct ifg_req);
1620 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL)
1621 continue;
1622 if (h == NULL)
1623 h = n;
1624 else {
1625 h->tail->next = n;
1626 h->tail = n->tail;
1627 }
1628 }
1629 free(ifgr.ifgr_groups);
1630
1631 return (h);
1632 }
1633
1634 struct node_host *
ifa_lookup(char * ifa_name,int flags)1635 ifa_lookup(char *ifa_name, int flags)
1636 {
1637 struct node_host *p = NULL, *h = NULL, *n = NULL;
1638 int got4 = 0, got6 = 0;
1639 const char *last_if = NULL;
1640
1641 /* first load iftab and isgroup_map */
1642 if (iftab == NULL)
1643 ifa_load();
1644
1645 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL)
1646 return (h);
1647
1648 if (!strncmp(ifa_name, "self", IFNAMSIZ))
1649 ifa_name = NULL;
1650
1651 for (p = iftab; p; p = p->next) {
1652 if (ifa_skip_if(ifa_name, p))
1653 continue;
1654 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
1655 continue;
1656 if ((flags & PFI_AFLAG_BROADCAST) &&
1657 !(p->ifa_flags & IFF_BROADCAST))
1658 continue;
1659 if ((flags & PFI_AFLAG_PEER) &&
1660 !(p->ifa_flags & IFF_POINTOPOINT))
1661 continue;
1662 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
1663 continue;
1664 if (last_if == NULL || strcmp(last_if, p->ifname))
1665 got4 = got6 = 0;
1666 last_if = p->ifname;
1667 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
1668 continue;
1669 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 &&
1670 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6))
1671 continue;
1672 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
1673 continue;
1674 if (p->af == AF_INET)
1675 got4 = 1;
1676 else
1677 got6 = 1;
1678 n = calloc(1, sizeof(struct node_host));
1679 if (n == NULL)
1680 err(1, "address: calloc");
1681 n->af = p->af;
1682 if (flags & PFI_AFLAG_BROADCAST)
1683 memcpy(&n->addr.v.a.addr, &p->bcast,
1684 sizeof(struct pf_addr));
1685 else if (flags & PFI_AFLAG_PEER)
1686 memcpy(&n->addr.v.a.addr, &p->peer,
1687 sizeof(struct pf_addr));
1688 else
1689 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
1690 sizeof(struct pf_addr));
1691 if (flags & PFI_AFLAG_NETWORK)
1692 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af));
1693 else {
1694 if (n->af == AF_INET) {
1695 if (p->ifa_flags & IFF_LOOPBACK &&
1696 p->ifa_flags & IFF_LINK1)
1697 memcpy(&n->addr.v.a.mask,
1698 &p->addr.v.a.mask,
1699 sizeof(struct pf_addr));
1700 else
1701 set_ipmask(n, 32);
1702 } else
1703 set_ipmask(n, 128);
1704 }
1705 n->ifindex = p->ifindex;
1706 n->ifname = strdup(p->ifname);
1707
1708 n->next = NULL;
1709 n->tail = n;
1710 if (h == NULL)
1711 h = n;
1712 else {
1713 h->tail->next = n;
1714 h->tail = n;
1715 }
1716 }
1717 return (h);
1718 }
1719
1720 int
ifa_skip_if(const char * filter,struct node_host * p)1721 ifa_skip_if(const char *filter, struct node_host *p)
1722 {
1723 int n;
1724
1725 if (p->af != AF_INET && p->af != AF_INET6)
1726 return (1);
1727 if (filter == NULL || !*filter)
1728 return (0);
1729 if (!strcmp(p->ifname, filter))
1730 return (0); /* exact match */
1731 n = strlen(filter);
1732 if (n < 1 || n >= IFNAMSIZ)
1733 return (1); /* sanity check */
1734 if (filter[n-1] >= '0' && filter[n-1] <= '9')
1735 return (1); /* only do exact match in that case */
1736 if (strncmp(p->ifname, filter, n))
1737 return (1); /* prefix doesn't match */
1738 return (p->ifname[n] < '0' || p->ifname[n] > '9');
1739 }
1740
1741
1742 struct node_host *
host(const char * s)1743 host(const char *s)
1744 {
1745 struct node_host *h = NULL;
1746 int mask, v4mask, v6mask, cont = 1;
1747 char *p, *q, *ps;
1748
1749 if ((p = strrchr(s, '/')) != NULL) {
1750 mask = strtol(p+1, &q, 0);
1751 if (!q || *q || mask > 128 || q == (p+1)) {
1752 fprintf(stderr, "invalid netmask '%s'\n", p);
1753 return (NULL);
1754 }
1755 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
1756 err(1, "host: malloc");
1757 strlcpy(ps, s, strlen(s) - strlen(p) + 1);
1758 v4mask = v6mask = mask;
1759 } else {
1760 if ((ps = strdup(s)) == NULL)
1761 err(1, "host: strdup");
1762 v4mask = 32;
1763 v6mask = 128;
1764 mask = -1;
1765 }
1766
1767 /* IPv4 address? */
1768 if (cont && (h = host_v4(s, mask)) != NULL)
1769 cont = 0;
1770
1771 /* IPv6 address? */
1772 if (cont && (h = host_v6(ps, v6mask)) != NULL)
1773 cont = 0;
1774
1775 /* interface with this name exists? */
1776 /* expensive with thousands of interfaces - prioritze IPv4/6 check */
1777 if (cont && (h = host_if(ps, mask, &cont)) != NULL)
1778 cont = 0;
1779
1780 /* dns lookup */
1781 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL)
1782 cont = 0;
1783 free(ps);
1784
1785 if (h == NULL || cont == 1) {
1786 fprintf(stderr, "no IP address found for %s\n", s);
1787 return (NULL);
1788 }
1789 return (h);
1790 }
1791
1792 struct node_host *
host_if(const char * s,int mask,int * cont)1793 host_if(const char *s, int mask, int *cont)
1794 {
1795 struct node_host *n, *h = NULL;
1796 char *p, *ps;
1797 int flags = 0;
1798
1799 if ((ps = strdup(s)) == NULL)
1800 err(1, "host_if: strdup");
1801 while ((p = strrchr(ps, ':')) != NULL) {
1802 if (!strcmp(p+1, "network"))
1803 flags |= PFI_AFLAG_NETWORK;
1804 else if (!strcmp(p+1, "broadcast"))
1805 flags |= PFI_AFLAG_BROADCAST;
1806 else if (!strcmp(p+1, "peer"))
1807 flags |= PFI_AFLAG_PEER;
1808 else if (!strcmp(p+1, "0"))
1809 flags |= PFI_AFLAG_NOALIAS;
1810 else {
1811 free(ps);
1812 return (NULL);
1813 }
1814 *p = '\0';
1815 *cont = 0;
1816 }
1817 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
1818 fprintf(stderr, "illegal combination of interface modifiers\n");
1819 free(ps);
1820 return (NULL);
1821 }
1822 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
1823 fprintf(stderr, "network or broadcast lookup, but "
1824 "extra netmask given\n");
1825 free(ps);
1826 return (NULL);
1827 }
1828 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) {
1829 /* interface with this name exists */
1830 h = ifa_lookup(ps, flags);
1831 for (n = h; n != NULL && mask > -1; n = n->next)
1832 set_ipmask(n, mask);
1833 }
1834
1835 free(ps);
1836 return (h);
1837 }
1838
1839 struct node_host *
host_v4(const char * s,int mask)1840 host_v4(const char *s, int mask)
1841 {
1842 struct node_host *h = NULL;
1843 struct in_addr ina;
1844 int bits = 32;
1845
1846 memset(&ina, 0, sizeof(struct in_addr));
1847 if (strrchr(s, '/') != NULL) {
1848 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1)
1849 return (NULL);
1850 } else {
1851 if (inet_pton(AF_INET, s, &ina) != 1)
1852 return (NULL);
1853 }
1854
1855 h = calloc(1, sizeof(struct node_host));
1856 if (h == NULL)
1857 err(1, "address: calloc");
1858 h->ifname = NULL;
1859 h->af = AF_INET;
1860 h->addr.v.a.addr.addr32[0] = ina.s_addr;
1861 set_ipmask(h, bits);
1862 h->next = NULL;
1863 h->tail = h;
1864
1865 return (h);
1866 }
1867
1868 struct node_host *
host_v6(const char * s,int mask)1869 host_v6(const char *s, int mask)
1870 {
1871 struct addrinfo hints, *res;
1872 struct node_host *h = NULL;
1873
1874 memset(&hints, 0, sizeof(hints));
1875 hints.ai_family = AF_INET6;
1876 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1877 hints.ai_flags = AI_NUMERICHOST;
1878 if (getaddrinfo(s, "0", &hints, &res) == 0) {
1879 h = calloc(1, sizeof(struct node_host));
1880 if (h == NULL)
1881 err(1, "address: calloc");
1882 h->ifname = NULL;
1883 h->af = AF_INET6;
1884 memcpy(&h->addr.v.a.addr,
1885 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
1886 sizeof(h->addr.v.a.addr));
1887 h->ifindex =
1888 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1889 set_ipmask(h, mask);
1890 freeaddrinfo(res);
1891 h->next = NULL;
1892 h->tail = h;
1893 }
1894
1895 return (h);
1896 }
1897
1898 struct node_host *
host_dns(const char * s,int v4mask,int v6mask)1899 host_dns(const char *s, int v4mask, int v6mask)
1900 {
1901 struct addrinfo hints, *res0, *res;
1902 struct node_host *n, *h = NULL;
1903 int error, noalias = 0;
1904 int got4 = 0, got6 = 0;
1905 char *p, *ps;
1906
1907 if ((ps = strdup(s)) == NULL)
1908 err(1, "host_dns: strdup");
1909 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
1910 noalias = 1;
1911 *p = '\0';
1912 }
1913 memset(&hints, 0, sizeof(hints));
1914 hints.ai_family = PF_UNSPEC;
1915 hints.ai_socktype = SOCK_STREAM; /* DUMMY */
1916 error = getaddrinfo(ps, NULL, &hints, &res0);
1917 if (error) {
1918 free(ps);
1919 return (h);
1920 }
1921
1922 for (res = res0; res; res = res->ai_next) {
1923 if (res->ai_family != AF_INET &&
1924 res->ai_family != AF_INET6)
1925 continue;
1926 if (noalias) {
1927 if (res->ai_family == AF_INET) {
1928 if (got4)
1929 continue;
1930 got4 = 1;
1931 } else {
1932 if (got6)
1933 continue;
1934 got6 = 1;
1935 }
1936 }
1937 n = calloc(1, sizeof(struct node_host));
1938 if (n == NULL)
1939 err(1, "host_dns: calloc");
1940 n->ifname = NULL;
1941 n->af = res->ai_family;
1942 if (res->ai_family == AF_INET) {
1943 memcpy(&n->addr.v.a.addr,
1944 &((struct sockaddr_in *)
1945 res->ai_addr)->sin_addr.s_addr,
1946 sizeof(struct in_addr));
1947 set_ipmask(n, v4mask);
1948 } else {
1949 memcpy(&n->addr.v.a.addr,
1950 &((struct sockaddr_in6 *)
1951 res->ai_addr)->sin6_addr.s6_addr,
1952 sizeof(struct in6_addr));
1953 n->ifindex =
1954 ((struct sockaddr_in6 *)
1955 res->ai_addr)->sin6_scope_id;
1956 set_ipmask(n, v6mask);
1957 }
1958 n->next = NULL;
1959 n->tail = n;
1960 if (h == NULL)
1961 h = n;
1962 else {
1963 h->tail->next = n;
1964 h->tail = n;
1965 }
1966 }
1967 freeaddrinfo(res0);
1968 free(ps);
1969
1970 return (h);
1971 }
1972
1973 /*
1974 * convert a hostname to a list of addresses and put them in the given buffer.
1975 * test:
1976 * if set to 1, only simple addresses are accepted (no netblock, no "!").
1977 */
1978 int
append_addr(struct pfr_buffer * b,char * s,int test)1979 append_addr(struct pfr_buffer *b, char *s, int test)
1980 {
1981 char *r;
1982 struct node_host *h, *n;
1983 int rv, not = 0;
1984
1985 for (r = s; *r == '!'; r++)
1986 not = !not;
1987 if ((n = host(r)) == NULL) {
1988 errno = 0;
1989 return (-1);
1990 }
1991 rv = append_addr_host(b, n, test, not);
1992 do {
1993 h = n;
1994 n = n->next;
1995 free(h);
1996 } while (n != NULL);
1997 return (rv);
1998 }
1999
2000 /*
2001 * same as previous function, but with a pre-parsed input and the ability
2002 * to "negate" the result. Does not free the node_host list.
2003 * not:
2004 * setting it to 1 is equivalent to adding "!" in front of parameter s.
2005 */
2006 int
append_addr_host(struct pfr_buffer * b,struct node_host * n,int test,int not)2007 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
2008 {
2009 int bits;
2010 struct pfr_addr addr;
2011
2012 do {
2013 bzero(&addr, sizeof(addr));
2014 addr.pfra_not = n->not ^ not;
2015 addr.pfra_af = n->af;
2016 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af);
2017 switch (n->af) {
2018 case AF_INET:
2019 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
2020 bits = 32;
2021 break;
2022 case AF_INET6:
2023 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
2024 sizeof(struct in6_addr));
2025 bits = 128;
2026 break;
2027 default:
2028 errno = EINVAL;
2029 return (-1);
2030 }
2031 if ((test && (not || addr.pfra_net != bits)) ||
2032 addr.pfra_net > bits) {
2033 errno = EINVAL;
2034 return (-1);
2035 }
2036 if (pfr_buf_add(b, &addr))
2037 return (-1);
2038 } while ((n = n->next) != NULL);
2039
2040 return (0);
2041 }
2042
2043 int
pfctl_add_trans(struct pfr_buffer * buf,int rs_num,const char * anchor)2044 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor)
2045 {
2046 struct pfioc_trans_e trans;
2047
2048 bzero(&trans, sizeof(trans));
2049 trans.rs_num = rs_num;
2050 if (strlcpy(trans.anchor, anchor,
2051 sizeof(trans.anchor)) >= sizeof(trans.anchor))
2052 errx(1, "pfctl_add_trans: strlcpy");
2053
2054 return pfr_buf_add(buf, &trans);
2055 }
2056
2057 u_int32_t
pfctl_get_ticket(struct pfr_buffer * buf,int rs_num,const char * anchor)2058 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor)
2059 {
2060 struct pfioc_trans_e *p;
2061
2062 PFRB_FOREACH(p, buf)
2063 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor))
2064 return (p->ticket);
2065 errx(1, "pfctl_get_ticket: assertion failed");
2066 }
2067
2068 int
pfctl_trans(int dev,struct pfr_buffer * buf,u_long cmd,int from)2069 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
2070 {
2071 struct pfioc_trans trans;
2072
2073 bzero(&trans, sizeof(trans));
2074 trans.size = buf->pfrb_size - from;
2075 trans.esize = sizeof(struct pfioc_trans_e);
2076 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
2077 return ioctl(dev, cmd, &trans);
2078 }
2079