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 <netinet/tcp.h>
48 #include <net/pfvar.h>
49 #include <arpa/inet.h>
50
51 #include <assert.h>
52 #include <search.h>
53 #include <stdio.h>
54 #include <stdlib.h>
55 #include <string.h>
56 #include <ctype.h>
57 #include <netdb.h>
58 #include <stdarg.h>
59 #include <errno.h>
60 #include <err.h>
61 #include <ifaddrs.h>
62 #include <inttypes.h>
63 #include <unistd.h>
64
65 #include "pfctl_parser.h"
66 #include "pfctl.h"
67
68 void print_op (u_int8_t, const char *, const char *);
69 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int);
70 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned);
71 void print_flags (uint16_t);
72 void print_fromto(struct pf_rule_addr *, pf_osfp_t,
73 struct pf_rule_addr *, sa_family_t, u_int8_t, int, int);
74 int ifa_skip_if(const char *filter, struct node_host *p);
75
76 struct node_host *host_if(const char *, int, int *);
77 struct node_host *host_v4(const char *, int);
78 struct node_host *host_v6(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 };
139
140 static const struct icmpcodeent icmp_code[] = {
141 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET },
142 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST },
143 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL },
144 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT },
145 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG },
146 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL },
147 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN },
148 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN },
149 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED },
150 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB },
151 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB },
152 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET },
153 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST },
154 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB },
155 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE },
156 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF },
157 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET },
158 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST },
159 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET },
160 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST },
161 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL },
162 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON },
163 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS },
164 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS },
165 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR },
166 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT },
167 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH },
168 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX },
169 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED },
170 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED }
171 };
172
173 static const struct icmpcodeent icmp6_code[] = {
174 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN },
175 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE },
176 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR },
177 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE },
178 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR },
179 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT },
180 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT },
181 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY },
182 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER },
183 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER },
184 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK },
185 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER }
186 };
187
188 const struct pf_timeout pf_timeouts[] = {
189 { "tcp.first", PFTM_TCP_FIRST_PACKET },
190 { "tcp.opening", PFTM_TCP_OPENING },
191 { "tcp.established", PFTM_TCP_ESTABLISHED },
192 { "tcp.closing", PFTM_TCP_CLOSING },
193 { "tcp.finwait", PFTM_TCP_FIN_WAIT },
194 { "tcp.closed", PFTM_TCP_CLOSED },
195 { "tcp.tsdiff", PFTM_TS_DIFF },
196 { "sctp.first", PFTM_SCTP_FIRST_PACKET },
197 { "sctp.opening", PFTM_SCTP_OPENING },
198 { "sctp.established", PFTM_SCTP_ESTABLISHED },
199 { "sctp.closing", PFTM_SCTP_CLOSING },
200 { "sctp.closed", PFTM_SCTP_CLOSED },
201 { "udp.first", PFTM_UDP_FIRST_PACKET },
202 { "udp.single", PFTM_UDP_SINGLE },
203 { "udp.multiple", PFTM_UDP_MULTIPLE },
204 { "icmp.first", PFTM_ICMP_FIRST_PACKET },
205 { "icmp.error", PFTM_ICMP_ERROR_REPLY },
206 { "other.first", PFTM_OTHER_FIRST_PACKET },
207 { "other.single", PFTM_OTHER_SINGLE },
208 { "other.multiple", PFTM_OTHER_MULTIPLE },
209 { "frag", PFTM_FRAG },
210 { "interval", PFTM_INTERVAL },
211 { "adaptive.start", PFTM_ADAPTIVE_START },
212 { "adaptive.end", PFTM_ADAPTIVE_END },
213 { "src.track", PFTM_SRC_NODE },
214 { NULL, 0 }
215 };
216
217 static struct hsearch_data isgroup_map;
218
219 static __attribute__((constructor)) void
pfctl_parser_init(void)220 pfctl_parser_init(void)
221 {
222 /*
223 * As hdestroy() will never be called on these tables, it will be
224 * safe to use references into the stored data as keys.
225 */
226 if (hcreate_r(0, &isgroup_map) == 0)
227 err(1, "Failed to create interface group query response map");
228 }
229
230 const struct icmptypeent *
geticmptypebynumber(u_int8_t type,sa_family_t af)231 geticmptypebynumber(u_int8_t type, sa_family_t af)
232 {
233 unsigned int i;
234
235 if (af != AF_INET6) {
236 for (i=0; i < nitems(icmp_type); i++) {
237 if (type == icmp_type[i].type)
238 return (&icmp_type[i]);
239 }
240 } else {
241 for (i=0; i < nitems(icmp6_type); i++) {
242 if (type == icmp6_type[i].type)
243 return (&icmp6_type[i]);
244 }
245 }
246 return (NULL);
247 }
248
249 const struct icmptypeent *
geticmptypebyname(char * w,sa_family_t af)250 geticmptypebyname(char *w, sa_family_t af)
251 {
252 unsigned int i;
253
254 if (af != AF_INET6) {
255 for (i=0; i < nitems(icmp_type); i++) {
256 if (!strcmp(w, icmp_type[i].name))
257 return (&icmp_type[i]);
258 }
259 } else {
260 for (i=0; i < nitems(icmp6_type); i++) {
261 if (!strcmp(w, icmp6_type[i].name))
262 return (&icmp6_type[i]);
263 }
264 }
265 return (NULL);
266 }
267
268 const struct icmpcodeent *
geticmpcodebynumber(u_int8_t type,u_int8_t code,sa_family_t af)269 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af)
270 {
271 unsigned int i;
272
273 if (af != AF_INET6) {
274 for (i=0; i < nitems(icmp_code); i++) {
275 if (type == icmp_code[i].type &&
276 code == icmp_code[i].code)
277 return (&icmp_code[i]);
278 }
279 } else {
280 for (i=0; i < nitems(icmp6_code); i++) {
281 if (type == icmp6_code[i].type &&
282 code == icmp6_code[i].code)
283 return (&icmp6_code[i]);
284 }
285 }
286 return (NULL);
287 }
288
289 const struct icmpcodeent *
geticmpcodebyname(u_long type,char * w,sa_family_t af)290 geticmpcodebyname(u_long type, char *w, sa_family_t af)
291 {
292 unsigned int i;
293
294 if (af != AF_INET6) {
295 for (i=0; i < nitems(icmp_code); i++) {
296 if (type == icmp_code[i].type &&
297 !strcmp(w, icmp_code[i].name))
298 return (&icmp_code[i]);
299 }
300 } else {
301 for (i=0; i < nitems(icmp6_code); i++) {
302 if (type == icmp6_code[i].type &&
303 !strcmp(w, icmp6_code[i].name))
304 return (&icmp6_code[i]);
305 }
306 }
307 return (NULL);
308 }
309
310 void
print_op(u_int8_t op,const char * a1,const char * a2)311 print_op(u_int8_t op, const char *a1, const char *a2)
312 {
313 if (op == PF_OP_IRG)
314 printf(" %s >< %s", a1, a2);
315 else if (op == PF_OP_XRG)
316 printf(" %s <> %s", a1, a2);
317 else if (op == PF_OP_EQ)
318 printf(" = %s", a1);
319 else if (op == PF_OP_NE)
320 printf(" != %s", a1);
321 else if (op == PF_OP_LT)
322 printf(" < %s", a1);
323 else if (op == PF_OP_LE)
324 printf(" <= %s", a1);
325 else if (op == PF_OP_GT)
326 printf(" > %s", a1);
327 else if (op == PF_OP_GE)
328 printf(" >= %s", a1);
329 else if (op == PF_OP_RRG)
330 printf(" %s:%s", a1, a2);
331 }
332
333 void
print_port(u_int8_t op,u_int16_t p1,u_int16_t p2,const char * proto,int numeric)334 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric)
335 {
336 char a1[6], a2[6];
337 struct servent *s;
338
339 if (!numeric)
340 s = getservbyport(p1, proto);
341 else
342 s = NULL;
343 p1 = ntohs(p1);
344 p2 = ntohs(p2);
345 snprintf(a1, sizeof(a1), "%u", p1);
346 snprintf(a2, sizeof(a2), "%u", p2);
347 printf(" port");
348 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE))
349 print_op(op, s->s_name, a2);
350 else
351 print_op(op, a1, a2);
352 }
353
354 void
print_ugid(u_int8_t op,unsigned u1,unsigned u2,const char * t,unsigned umax)355 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax)
356 {
357 char a1[11], a2[11];
358
359 snprintf(a1, sizeof(a1), "%u", u1);
360 snprintf(a2, sizeof(a2), "%u", u2);
361 printf(" %s", t);
362 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE))
363 print_op(op, "unknown", a2);
364 else
365 print_op(op, a1, a2);
366 }
367
368 void
print_flags(uint16_t f)369 print_flags(uint16_t f)
370 {
371 int i;
372
373 for (i = 0; tcpflags[i]; ++i)
374 if (f & (1 << i))
375 printf("%c", tcpflags[i]);
376 }
377
378 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)379 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst,
380 sa_family_t af, u_int8_t proto, int verbose, int numeric)
381 {
382 char buf[PF_OSFP_LEN*3];
383 if (src->addr.type == PF_ADDR_ADDRMASK &&
384 dst->addr.type == PF_ADDR_ADDRMASK &&
385 PF_AZERO(&src->addr.v.a.addr, AF_INET6) &&
386 PF_AZERO(&src->addr.v.a.mask, AF_INET6) &&
387 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) &&
388 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) &&
389 !src->neg && !dst->neg &&
390 !src->port_op && !dst->port_op &&
391 osfp == PF_OSFP_ANY)
392 printf(" all");
393 else {
394 printf(" from ");
395 if (src->neg)
396 printf("! ");
397 print_addr(&src->addr, af, verbose);
398 if (src->port_op)
399 print_port(src->port_op, src->port[0],
400 src->port[1],
401 proto == IPPROTO_TCP ? "tcp" : "udp",
402 numeric);
403 if (osfp != PF_OSFP_ANY)
404 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf,
405 sizeof(buf)));
406
407 printf(" to ");
408 if (dst->neg)
409 printf("! ");
410 print_addr(&dst->addr, af, verbose);
411 if (dst->port_op)
412 print_port(dst->port_op, dst->port[0],
413 dst->port[1],
414 proto == IPPROTO_TCP ? "tcp" : "udp",
415 numeric);
416 }
417 }
418
419 void
print_pool(struct pfctl_pool * pool,u_int16_t p1,u_int16_t p2,sa_family_t af,int id)420 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2,
421 sa_family_t af, int id)
422 {
423 struct pf_pooladdr *pooladdr;
424
425 if ((TAILQ_FIRST(&pool->list) != NULL) &&
426 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
427 printf("{ ");
428 TAILQ_FOREACH(pooladdr, &pool->list, entries){
429 switch (id) {
430 case PF_NAT:
431 case PF_RDR:
432 case PF_BINAT:
433 print_addr(&pooladdr->addr, af, 0);
434 break;
435 case PF_PASS:
436 case PF_MATCH:
437 if (PF_AZERO(&pooladdr->addr.v.a.addr, af))
438 printf("%s", pooladdr->ifname);
439 else {
440 printf("(%s ", pooladdr->ifname);
441 print_addr(&pooladdr->addr, af, 0);
442 printf(")");
443 }
444 break;
445 default:
446 break;
447 }
448 if (TAILQ_NEXT(pooladdr, entries) != NULL)
449 printf(", ");
450 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
451 printf(" }");
452 }
453 switch (id) {
454 case PF_NAT:
455 if ((p1 != PF_NAT_PROXY_PORT_LOW ||
456 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) {
457 if (p1 == p2)
458 printf(" port %u", p1);
459 else
460 printf(" port %u:%u", p1, p2);
461 }
462 break;
463 case PF_RDR:
464 if (p1) {
465 printf(" port %u", p1);
466 if (p2 && (p2 != p1))
467 printf(":%u", p2);
468 }
469 break;
470 default:
471 break;
472 }
473 switch (pool->opts & PF_POOL_TYPEMASK) {
474 case PF_POOL_NONE:
475 break;
476 case PF_POOL_BITMASK:
477 printf(" bitmask");
478 break;
479 case PF_POOL_RANDOM:
480 printf(" random");
481 break;
482 case PF_POOL_SRCHASH:
483 printf(" source-hash 0x%08x%08x%08x%08x",
484 pool->key.key32[0], pool->key.key32[1],
485 pool->key.key32[2], pool->key.key32[3]);
486 break;
487 case PF_POOL_ROUNDROBIN:
488 printf(" round-robin");
489 break;
490 }
491 if (pool->opts & PF_POOL_STICKYADDR)
492 printf(" sticky-address");
493 if (pool->opts & PF_POOL_ENDPI)
494 printf(" endpoint-independent");
495 if (id == PF_NAT && p1 == 0 && p2 == 0)
496 printf(" static-port");
497 if (pool->mape.offset > 0)
498 printf(" map-e-portset %u/%u/%u",
499 pool->mape.offset, pool->mape.psidlen, pool->mape.psid);
500 }
501
502 void
print_status(struct pfctl_status * s,struct pfctl_syncookies * cookies,int opts)503 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts)
504 {
505 struct pfctl_status_counter *c;
506 char statline[80], *running;
507 time_t runtime;
508 int i;
509 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1];
510 static const char hex[] = "0123456789abcdef";
511
512 runtime = time(NULL) - s->since;
513 running = s->running ? "Enabled" : "Disabled";
514
515 if (s->since) {
516 unsigned int sec, min, hrs, day = runtime;
517
518 sec = day % 60;
519 day /= 60;
520 min = day % 60;
521 day /= 60;
522 hrs = day % 24;
523 day /= 24;
524 snprintf(statline, sizeof(statline),
525 "Status: %s for %u days %.2u:%.2u:%.2u",
526 running, day, hrs, min, sec);
527 } else
528 snprintf(statline, sizeof(statline), "Status: %s", running);
529 printf("%-44s", statline);
530 switch (s->debug) {
531 case PF_DEBUG_NONE:
532 printf("%15s\n\n", "Debug: None");
533 break;
534 case PF_DEBUG_URGENT:
535 printf("%15s\n\n", "Debug: Urgent");
536 break;
537 case PF_DEBUG_MISC:
538 printf("%15s\n\n", "Debug: Misc");
539 break;
540 case PF_DEBUG_NOISY:
541 printf("%15s\n\n", "Debug: Loud");
542 break;
543 }
544
545 if (opts & PF_OPT_VERBOSE) {
546 printf("Hostid: 0x%08x\n", s->hostid);
547
548 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) {
549 buf[i + i] = hex[s->pf_chksum[i] >> 4];
550 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f];
551 }
552 buf[i + i] = '\0';
553 printf("Checksum: 0x%s\n\n", buf);
554 }
555
556 if (s->ifname[0] != 0) {
557 printf("Interface Stats for %-16s %5s %16s\n",
558 s->ifname, "IPv4", "IPv6");
559 printf(" %-25s %14llu %16llu\n", "Bytes In",
560 (unsigned long long)s->bcounters[0][0],
561 (unsigned long long)s->bcounters[1][0]);
562 printf(" %-25s %14llu %16llu\n", "Bytes Out",
563 (unsigned long long)s->bcounters[0][1],
564 (unsigned long long)s->bcounters[1][1]);
565 printf(" Packets In\n");
566 printf(" %-23s %14llu %16llu\n", "Passed",
567 (unsigned long long)s->pcounters[0][0][PF_PASS],
568 (unsigned long long)s->pcounters[1][0][PF_PASS]);
569 printf(" %-23s %14llu %16llu\n", "Blocked",
570 (unsigned long long)s->pcounters[0][0][PF_DROP],
571 (unsigned long long)s->pcounters[1][0][PF_DROP]);
572 printf(" Packets Out\n");
573 printf(" %-23s %14llu %16llu\n", "Passed",
574 (unsigned long long)s->pcounters[0][1][PF_PASS],
575 (unsigned long long)s->pcounters[1][1][PF_PASS]);
576 printf(" %-23s %14llu %16llu\n\n", "Blocked",
577 (unsigned long long)s->pcounters[0][1][PF_DROP],
578 (unsigned long long)s->pcounters[1][1][PF_DROP]);
579 }
580 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
581 printf(" %-25s %14ju %14s\n", "current entries", s->states, "");
582 TAILQ_FOREACH(c, &s->fcounters, entry) {
583 printf(" %-25s %14ju ", c->name, c->counter);
584 if (runtime > 0)
585 printf("%14.1f/s\n",
586 (double)c->counter / (double)runtime);
587 else
588 printf("%14s\n", "");
589 }
590 if (opts & PF_OPT_VERBOSE) {
591 printf("Source Tracking Table\n");
592 printf(" %-25s %14ju %14s\n", "current entries",
593 s->src_nodes, "");
594 TAILQ_FOREACH(c, &s->scounters, entry) {
595 printf(" %-25s %14ju ", c->name, c->counter);
596 if (runtime > 0)
597 printf("%14.1f/s\n",
598 (double)c->counter / (double)runtime);
599 else
600 printf("%14s\n", "");
601 }
602 }
603 printf("Counters\n");
604 TAILQ_FOREACH(c, &s->counters, entry) {
605 printf(" %-25s %14ju ", c->name, c->counter);
606 if (runtime > 0)
607 printf("%14.1f/s\n",
608 (double)c->counter / (double)runtime);
609 else
610 printf("%14s\n", "");
611 }
612 if (opts & PF_OPT_VERBOSE) {
613 printf("Limit Counters\n");
614 TAILQ_FOREACH(c, &s->lcounters, entry) {
615 printf(" %-25s %14ju ", c->name, c->counter);
616 if (runtime > 0)
617 printf("%14.1f/s\n",
618 (double)c->counter / (double)runtime);
619 else
620 printf("%14s\n", "");
621 }
622
623 printf("Syncookies\n");
624 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE);
625 printf(" %-25s %s\n", "mode",
626 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]);
627 printf(" %-25s %s\n", "active",
628 s->syncookies_active ? "active" : "inactive");
629 if (opts & PF_OPT_VERBOSE2) {
630 printf(" %-25s %d %%\n", "highwater", cookies->highwater);
631 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater);
632 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states);
633 }
634 printf("Reassemble %24s %s\n",
635 s->reass & PF_REASS_ENABLED ? "yes" : "no",
636 s->reass & PF_REASS_NODF ? "no-df" : ""
637 );
638 }
639 }
640
641 void
print_running(struct pfctl_status * status)642 print_running(struct pfctl_status *status)
643 {
644 printf("%s\n", status->running ? "Enabled" : "Disabled");
645 }
646
647 void
print_src_node(struct pfctl_src_node * sn,int opts)648 print_src_node(struct pfctl_src_node *sn, int opts)
649 {
650 struct pf_addr_wrap aw;
651 uint64_t min, sec;
652
653 memset(&aw, 0, sizeof(aw));
654 if (sn->af == AF_INET)
655 aw.v.a.mask.addr32[0] = 0xffffffff;
656 else
657 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
658
659 aw.v.a.addr = sn->addr;
660 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
661 printf(" -> ");
662 aw.v.a.addr = sn->raddr;
663 print_addr(&aw, sn->naf ? sn->naf : sn->af, opts & PF_OPT_VERBOSE2);
664 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states,
665 sn->conn, sn->conn_rate.count / 1000,
666 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds);
667 if (opts & PF_OPT_VERBOSE) {
668 sec = sn->creation % 60;
669 sn->creation /= 60;
670 min = sn->creation % 60;
671 sn->creation /= 60;
672 printf(" age %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64,
673 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 %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64,
680 sn->expire, min, sec);
681 }
682 printf(", %" PRIu64 " pkts, %" PRIu64 " bytes",
683 sn->packets[0] + sn->packets[1],
684 sn->bytes[0] + sn->bytes[1]);
685 switch (sn->ruletype) {
686 case PF_NAT:
687 if (sn->rule != -1)
688 printf(", nat rule %u", sn->rule);
689 break;
690 case PF_RDR:
691 if (sn->rule != -1)
692 printf(", rdr rule %u", sn->rule);
693 break;
694 case PF_PASS:
695 case PF_MATCH:
696 if (sn->rule != -1)
697 printf(", filter rule %u", sn->rule);
698 break;
699 }
700 printf("\n");
701 }
702 }
703
704 static void
print_eth_addr(const struct pfctl_eth_addr * a)705 print_eth_addr(const struct pfctl_eth_addr *a)
706 {
707 int i, masklen = ETHER_ADDR_LEN * 8;
708 bool seen_unset = false;
709
710 for (i = 0; i < ETHER_ADDR_LEN; i++) {
711 if (a->addr[i] != 0)
712 break;
713 }
714
715 /* Unset, so don't print anything. */
716 if (i == ETHER_ADDR_LEN)
717 return;
718
719 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "",
720 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4],
721 a->addr[5]);
722
723 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) {
724 bool isset = a->mask[i / 8] & (1 << i % 8);
725
726 if (! seen_unset) {
727 if (isset)
728 continue;
729 seen_unset = true;
730 masklen = i;
731 } else {
732 /* Not actually a continuous mask, so print the whole
733 * thing. */
734 if (isset)
735 break;
736 continue;
737 }
738 }
739
740 if (masklen == (ETHER_ADDR_LEN * 8))
741 return;
742
743 if (i == (ETHER_ADDR_LEN * 8)) {
744 printf("/%d", masklen);
745 return;
746 }
747
748 printf("&%02x:%02x:%02x:%02x:%02x:%02x",
749 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4],
750 a->mask[5]);
751 }
752
753 void
print_eth_rule(struct pfctl_eth_rule * r,const char * anchor_call,int rule_numbers)754 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call,
755 int rule_numbers)
756 {
757 static const char *actiontypes[] = { "pass", "block", "", "", "", "",
758 "", "", "", "", "", "", "match" };
759
760 int i;
761
762 if (rule_numbers)
763 printf("@%u ", r->nr);
764
765 printf("ether ");
766 if (anchor_call[0]) {
767 if (anchor_call[0] == '_') {
768 printf("anchor");
769 } else
770 printf("anchor \"%s\"", anchor_call);
771 } else {
772 printf("%s", actiontypes[r->action]);
773 }
774 if (r->direction == PF_IN)
775 printf(" in");
776 else if (r->direction == PF_OUT)
777 printf(" out");
778
779 if (r->quick)
780 printf(" quick");
781 if (r->ifname[0]) {
782 if (r->ifnot)
783 printf(" on ! %s", r->ifname);
784 else
785 printf(" on %s", r->ifname);
786 }
787 if (r->bridge_to[0])
788 printf(" bridge-to %s", r->bridge_to);
789 if (r->proto)
790 printf(" proto 0x%04x", r->proto);
791
792 if (r->src.isset) {
793 printf(" from ");
794 print_eth_addr(&r->src);
795 }
796 if (r->dst.isset) {
797 printf(" to ");
798 print_eth_addr(&r->dst);
799 }
800 printf(" l3");
801 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst,
802 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0,
803 0, 0);
804
805 i = 0;
806 while (r->label[i][0])
807 printf(" label \"%s\"", r->label[i++]);
808 if (r->ridentifier)
809 printf(" ridentifier %u", r->ridentifier);
810
811 if (r->qname[0])
812 printf(" queue %s", r->qname);
813 if (r->tagname[0])
814 printf(" tag %s", r->tagname);
815 if (r->match_tagname[0]) {
816 if (r->match_tag_not)
817 printf(" !");
818 printf(" tagged %s", r->match_tagname);
819 }
820 if (r->dnpipe)
821 printf(" %s %d",
822 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
823 r->dnpipe);
824 }
825
826 void
print_rule(struct pfctl_rule * r,const char * anchor_call,int verbose,int numeric)827 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric)
828 {
829 static const char *actiontypes[] = { "pass", "block", "scrub",
830 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr",
831 "", "", "match"};
832 static const char *anchortypes[] = { "anchor", "anchor", "anchor",
833 "anchor", "nat-anchor", "nat-anchor", "binat-anchor",
834 "binat-anchor", "rdr-anchor", "rdr-anchor" };
835 int i, ropts;
836 char *p;
837
838 if (verbose)
839 printf("@%d ", r->nr);
840 if (r->action == PF_MATCH)
841 printf("match");
842 else if (r->action > PF_NORDR)
843 printf("action(%d)", r->action);
844 else if (anchor_call[0]) {
845 p = strrchr(anchor_call, '/');
846 if (p ? p[1] == '_' : anchor_call[0] == '_')
847 printf("%s", anchortypes[r->action]);
848 else
849 printf("%s \"%s\"", anchortypes[r->action],
850 anchor_call);
851 } else {
852 printf("%s", actiontypes[r->action]);
853 if (r->natpass)
854 printf(" pass");
855 }
856 if (r->action == PF_DROP) {
857 if (r->rule_flag & PFRULE_RETURN)
858 printf(" return");
859 else if (r->rule_flag & PFRULE_RETURNRST) {
860 if (!r->return_ttl)
861 printf(" return-rst");
862 else
863 printf(" return-rst(ttl %d)", r->return_ttl);
864 } else if (r->rule_flag & PFRULE_RETURNICMP) {
865 const struct icmpcodeent *ic, *ic6;
866
867 ic = geticmpcodebynumber(r->return_icmp >> 8,
868 r->return_icmp & 255, AF_INET);
869 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
870 r->return_icmp6 & 255, AF_INET6);
871
872 switch (r->af) {
873 case AF_INET:
874 printf(" return-icmp");
875 if (ic == NULL)
876 printf("(%u)", r->return_icmp & 255);
877 else
878 printf("(%s)", ic->name);
879 break;
880 case AF_INET6:
881 printf(" return-icmp6");
882 if (ic6 == NULL)
883 printf("(%u)", r->return_icmp6 & 255);
884 else
885 printf("(%s)", ic6->name);
886 break;
887 default:
888 printf(" return-icmp");
889 if (ic == NULL)
890 printf("(%u, ", r->return_icmp & 255);
891 else
892 printf("(%s, ", ic->name);
893 if (ic6 == NULL)
894 printf("%u)", r->return_icmp6 & 255);
895 else
896 printf("%s)", ic6->name);
897 break;
898 }
899 } else
900 printf(" drop");
901 }
902 if (r->direction == PF_IN)
903 printf(" in");
904 else if (r->direction == PF_OUT)
905 printf(" out");
906 if (r->log) {
907 printf(" log");
908 if (r->log & ~PF_LOG || r->logif) {
909 int count = 0;
910
911 printf(" (");
912 if (r->log & PF_LOG_ALL)
913 printf("%sall", count++ ? ", " : "");
914 if (r->log & PF_LOG_MATCHES)
915 printf("%smatches", count++ ? ", " : "");
916 if (r->log & PF_LOG_SOCKET_LOOKUP)
917 printf("%suser", count++ ? ", " : "");
918 if (r->logif)
919 printf("%sto pflog%u", count++ ? ", " : "",
920 r->logif);
921 printf(")");
922 }
923 }
924 if (r->quick)
925 printf(" quick");
926 if (r->ifname[0]) {
927 if (r->ifnot)
928 printf(" on ! %s", r->ifname);
929 else
930 printf(" on %s", r->ifname);
931 }
932 if (r->rt) {
933 if (r->rt == PF_ROUTETO)
934 printf(" route-to");
935 else if (r->rt == PF_REPLYTO)
936 printf(" reply-to");
937 else if (r->rt == PF_DUPTO)
938 printf(" dup-to");
939 printf(" ");
940 print_pool(&r->rdr, 0, 0, r->af, PF_PASS);
941 print_pool(&r->route, 0, 0,
942 r->rule_flag & PFRULE_AFTO && r->rt != PF_REPLYTO ? r->naf : r->af,
943 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->rcv_ifname[0])
962 printf(" received-on %s", r->rcv_ifname);
963 if (r->uid.op)
964 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user",
965 UID_MAX);
966 if (r->gid.op)
967 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group",
968 GID_MAX);
969 if (r->flags || r->flagset) {
970 printf(" flags ");
971 print_flags(r->flags);
972 printf("/");
973 print_flags(r->flagset);
974 } else if ((r->action == PF_PASS || r->action == PF_MATCH) &&
975 (!r->proto || r->proto == IPPROTO_TCP) &&
976 !(r->rule_flag & PFRULE_FRAGMENT) &&
977 !anchor_call[0] && r->keep_state)
978 printf(" flags any");
979 if (r->type) {
980 const struct icmptypeent *it;
981
982 it = geticmptypebynumber(r->type-1, r->af);
983 if (r->af != AF_INET6)
984 printf(" icmp-type");
985 else
986 printf(" icmp6-type");
987 if (it != NULL)
988 printf(" %s", it->name);
989 else
990 printf(" %u", r->type-1);
991 if (r->code) {
992 const struct icmpcodeent *ic;
993
994 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
995 if (ic != NULL)
996 printf(" code %s", ic->name);
997 else
998 printf(" code %u", r->code-1);
999 }
1000 }
1001 if (r->tos)
1002 printf(" tos 0x%2.2x", r->tos);
1003 if (r->prio)
1004 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio);
1005 if (r->scrub_flags & PFSTATE_SETMASK) {
1006 char *comma = "";
1007 printf(" set (");
1008 if (r->scrub_flags & PFSTATE_SETPRIO) {
1009 if (r->set_prio[0] == r->set_prio[1])
1010 printf("%s prio %u", comma, r->set_prio[0]);
1011 else
1012 printf("%s prio(%u, %u)", comma, r->set_prio[0],
1013 r->set_prio[1]);
1014 comma = ",";
1015 }
1016 if (r->scrub_flags & PFSTATE_SETTOS) {
1017 printf("%s tos 0x%2.2x", comma, r->set_tos);
1018 comma = ",";
1019 }
1020 printf(" )");
1021 }
1022 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0])
1023 printf(" no state");
1024 else if (r->keep_state == PF_STATE_NORMAL)
1025 printf(" keep state");
1026 else if (r->keep_state == PF_STATE_MODULATE)
1027 printf(" modulate state");
1028 else if (r->keep_state == PF_STATE_SYNPROXY)
1029 printf(" synproxy state");
1030 if (r->prob) {
1031 char buf[20];
1032
1033 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
1034 for (i = strlen(buf)-1; i > 0; i--) {
1035 if (buf[i] == '0')
1036 buf[i] = '\0';
1037 else {
1038 if (buf[i] == '.')
1039 buf[i] = '\0';
1040 break;
1041 }
1042 }
1043 printf(" probability %s%%", buf);
1044 }
1045 ropts = 0;
1046 if (r->max_states || r->max_src_nodes || r->max_src_states)
1047 ropts = 1;
1048 if (r->rule_flag & PFRULE_NOSYNC)
1049 ropts = 1;
1050 if (r->rule_flag & PFRULE_SRCTRACK)
1051 ropts = 1;
1052 if (r->rule_flag & PFRULE_IFBOUND)
1053 ropts = 1;
1054 if (r->rule_flag & PFRULE_STATESLOPPY)
1055 ropts = 1;
1056 if (r->rule_flag & PFRULE_PFLOW)
1057 ropts = 1;
1058 for (i = 0; !ropts && i < PFTM_MAX; ++i)
1059 if (r->timeout[i])
1060 ropts = 1;
1061 if (ropts) {
1062 printf(" (");
1063 if (r->max_states) {
1064 printf("max %u", r->max_states);
1065 ropts = 0;
1066 }
1067 if (r->rule_flag & PFRULE_NOSYNC) {
1068 if (!ropts)
1069 printf(", ");
1070 printf("no-sync");
1071 ropts = 0;
1072 }
1073 if (r->rule_flag & PFRULE_SRCTRACK) {
1074 if (!ropts)
1075 printf(", ");
1076 printf("source-track");
1077 if (r->rule_flag & PFRULE_RULESRCTRACK)
1078 printf(" rule");
1079 else
1080 printf(" global");
1081 ropts = 0;
1082 }
1083 if (r->max_src_states) {
1084 if (!ropts)
1085 printf(", ");
1086 printf("max-src-states %u", r->max_src_states);
1087 ropts = 0;
1088 }
1089 if (r->max_src_conn) {
1090 if (!ropts)
1091 printf(", ");
1092 printf("max-src-conn %u", r->max_src_conn);
1093 ropts = 0;
1094 }
1095 if (r->max_src_conn_rate.limit) {
1096 if (!ropts)
1097 printf(", ");
1098 printf("max-src-conn-rate %u/%u",
1099 r->max_src_conn_rate.limit,
1100 r->max_src_conn_rate.seconds);
1101 ropts = 0;
1102 }
1103 if (r->max_src_nodes) {
1104 if (!ropts)
1105 printf(", ");
1106 printf("max-src-nodes %u", r->max_src_nodes);
1107 ropts = 0;
1108 }
1109 if (r->overload_tblname[0]) {
1110 if (!ropts)
1111 printf(", ");
1112 printf("overload <%s>", r->overload_tblname);
1113 if (r->flush)
1114 printf(" flush");
1115 if (r->flush & PF_FLUSH_GLOBAL)
1116 printf(" global");
1117 }
1118 if (r->rule_flag & PFRULE_IFBOUND) {
1119 if (!ropts)
1120 printf(", ");
1121 printf("if-bound");
1122 ropts = 0;
1123 }
1124 if (r->rule_flag & PFRULE_STATESLOPPY) {
1125 if (!ropts)
1126 printf(", ");
1127 printf("sloppy");
1128 ropts = 0;
1129 }
1130 if (r->rule_flag & PFRULE_PFLOW) {
1131 if (!ropts)
1132 printf(", ");
1133 printf("pflow");
1134 ropts = 0;
1135 }
1136 for (i = 0; i < PFTM_MAX; ++i)
1137 if (r->timeout[i]) {
1138 int j;
1139
1140 if (!ropts)
1141 printf(", ");
1142 ropts = 0;
1143 for (j = 0; pf_timeouts[j].name != NULL;
1144 ++j)
1145 if (pf_timeouts[j].timeout == i)
1146 break;
1147 printf("%s %u", pf_timeouts[j].name == NULL ?
1148 "inv.timeout" : pf_timeouts[j].name,
1149 r->timeout[i]);
1150 }
1151 printf(")");
1152 }
1153 if (r->allow_opts)
1154 printf(" allow-opts");
1155 if (r->rule_flag & PFRULE_FRAGMENT)
1156 printf(" fragment");
1157 if (r->action == PF_SCRUB) {
1158 /* Scrub flags for old-style scrub. */
1159 if (r->rule_flag & PFRULE_NODF)
1160 printf(" no-df");
1161 if (r->rule_flag & PFRULE_RANDOMID)
1162 printf(" random-id");
1163 if (r->min_ttl)
1164 printf(" min-ttl %d", r->min_ttl);
1165 if (r->max_mss)
1166 printf(" max-mss %d", r->max_mss);
1167 if (r->rule_flag & PFRULE_SET_TOS)
1168 printf(" set-tos 0x%2.2x", r->set_tos);
1169 if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
1170 printf(" reassemble tcp");
1171 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */
1172 printf(" fragment %sreassemble",
1173 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : "");
1174 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) {
1175 /* Scrub actions on normal rules. */
1176 printf(" scrub(");
1177 if (r->scrub_flags & PFSTATE_NODF)
1178 printf(" no-df");
1179 if (r->scrub_flags & PFSTATE_RANDOMID)
1180 printf(" random-id");
1181 if (r->min_ttl)
1182 printf(" min-ttl %d", r->min_ttl);
1183 if (r->scrub_flags & PFSTATE_SETTOS)
1184 printf(" set-tos 0x%2.2x", r->set_tos);
1185 if (r->scrub_flags & PFSTATE_SCRUB_TCP)
1186 printf(" reassemble tcp");
1187 if (r->max_mss)
1188 printf(" max-mss %d", r->max_mss);
1189 printf(")");
1190 }
1191 i = 0;
1192 while (r->label[i][0])
1193 printf(" label \"%s\"", r->label[i++]);
1194 if (r->ridentifier)
1195 printf(" ridentifier %u", r->ridentifier);
1196 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */
1197 if (r->dnrpipe)
1198 printf(" %s(%d, %d)",
1199 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1200 r->dnpipe, r->dnrpipe);
1201 else if (r->dnpipe)
1202 printf(" %s %d",
1203 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1204 r->dnpipe);
1205 if (r->qname[0] && r->pqname[0])
1206 printf(" queue(%s, %s)", r->qname, r->pqname);
1207 else if (r->qname[0])
1208 printf(" queue %s", r->qname);
1209 if (r->tagname[0])
1210 printf(" tag %s", r->tagname);
1211 if (r->match_tagname[0]) {
1212 if (r->match_tag_not)
1213 printf(" !");
1214 printf(" tagged %s", r->match_tagname);
1215 }
1216 if (r->rtableid != -1)
1217 printf(" rtable %u", r->rtableid);
1218 if (r->divert.port) {
1219 #ifdef __FreeBSD__
1220 printf(" divert-to %u", ntohs(r->divert.port));
1221 #else
1222 if (PF_AZERO(&r->divert.addr, r->af)) {
1223 printf(" divert-reply");
1224 } else {
1225 /* XXX cut&paste from print_addr */
1226 char buf[48];
1227
1228 printf(" divert-to ");
1229 if (inet_ntop(r->af, &r->divert.addr, buf,
1230 sizeof(buf)) == NULL)
1231 printf("?");
1232 else
1233 printf("%s", buf);
1234 printf(" port %u", ntohs(r->divert.port));
1235 }
1236 #endif
1237 }
1238 if (!anchor_call[0] && ! TAILQ_EMPTY(&r->nat.list) &&
1239 r->rule_flag & PFRULE_AFTO) {
1240 printf(" af-to %s from ", r->naf == AF_INET ? "inet" : "inet6");
1241 print_pool(&r->nat, r->nat.proxy_port[0], r->nat.proxy_port[1],
1242 r->naf ? r->naf : r->af, PF_NAT);
1243 if (r->rdr.cur != NULL && !TAILQ_EMPTY(&r->rdr.list)) {
1244 printf(" to ");
1245 print_pool(&r->rdr, r->rdr.proxy_port[0],
1246 r->rdr.proxy_port[1], r->naf ? r->naf : r->af,
1247 PF_RDR);
1248 }
1249 }
1250 if (!anchor_call[0] &&
1251 (r->action == PF_NAT || r->action == PF_BINAT ||
1252 r->action == PF_RDR)) {
1253 printf(" -> ");
1254 print_pool(&r->rdr, r->rdr.proxy_port[0],
1255 r->rdr.proxy_port[1], r->af, r->action);
1256 }
1257 }
1258
1259 void
print_tabledef(const char * name,int flags,int addrs,struct node_tinithead * nodes)1260 print_tabledef(const char *name, int flags, int addrs,
1261 struct node_tinithead *nodes)
1262 {
1263 struct node_tinit *ti, *nti;
1264 struct node_host *h;
1265
1266 printf("table <%s>", name);
1267 if (flags & PFR_TFLAG_CONST)
1268 printf(" const");
1269 if (flags & PFR_TFLAG_PERSIST)
1270 printf(" persist");
1271 if (flags & PFR_TFLAG_COUNTERS)
1272 printf(" counters");
1273 SIMPLEQ_FOREACH(ti, nodes, entries) {
1274 if (ti->file) {
1275 printf(" file \"%s\"", ti->file);
1276 continue;
1277 }
1278 printf(" {");
1279 for (;;) {
1280 for (h = ti->host; h != NULL; h = h->next) {
1281 printf(h->not ? " !" : " ");
1282 print_addr(&h->addr, h->af, 0);
1283 }
1284 nti = SIMPLEQ_NEXT(ti, entries);
1285 if (nti != NULL && nti->file == NULL)
1286 ti = nti; /* merge lists */
1287 else
1288 break;
1289 }
1290 printf(" }");
1291 }
1292 if (addrs && SIMPLEQ_EMPTY(nodes))
1293 printf(" { }");
1294 printf("\n");
1295 }
1296
1297 int
parse_flags(char * s)1298 parse_flags(char *s)
1299 {
1300 char *p, *q;
1301 uint16_t f = 0;
1302
1303 for (p = s; *p; p++) {
1304 if ((q = strchr(tcpflags, *p)) == NULL)
1305 return -1;
1306 else
1307 f |= 1 << (q - tcpflags);
1308 }
1309 return (f ? f : TH_FLAGS);
1310 }
1311
1312 void
set_ipmask(struct node_host * h,u_int8_t b)1313 set_ipmask(struct node_host *h, u_int8_t b)
1314 {
1315 struct pf_addr *m, *n;
1316 int i, j = 0;
1317
1318 m = &h->addr.v.a.mask;
1319 memset(m, 0, sizeof(*m));
1320
1321 while (b >= 32) {
1322 m->addr32[j++] = 0xffffffff;
1323 b -= 32;
1324 }
1325 for (i = 31; i > 31-b; --i)
1326 m->addr32[j] |= (1 << i);
1327 if (b)
1328 m->addr32[j] = htonl(m->addr32[j]);
1329
1330 /* Mask off bits of the address that will never be used. */
1331 n = &h->addr.v.a.addr;
1332 if (h->addr.type == PF_ADDR_ADDRMASK)
1333 for (i = 0; i < 4; i++)
1334 n->addr32[i] = n->addr32[i] & m->addr32[i];
1335 }
1336
1337 int
check_netmask(struct node_host * h,sa_family_t af)1338 check_netmask(struct node_host *h, sa_family_t af)
1339 {
1340 struct node_host *n = NULL;
1341 struct pf_addr *m;
1342
1343 for (n = h; n != NULL; n = n->next) {
1344 if (h->addr.type == PF_ADDR_TABLE)
1345 continue;
1346 m = &h->addr.v.a.mask;
1347 /* netmasks > 32 bit are invalid on v4 */
1348 if (af == AF_INET &&
1349 (m->addr32[1] || m->addr32[2] || m->addr32[3])) {
1350 fprintf(stderr, "netmask %u invalid for IPv4 address\n",
1351 unmask(m, AF_INET6));
1352 return (1);
1353 }
1354 }
1355 return (0);
1356 }
1357
1358 struct node_host *
gen_dynnode(struct node_host * h,sa_family_t af)1359 gen_dynnode(struct node_host *h, sa_family_t af)
1360 {
1361 struct node_host *n;
1362 struct pf_addr *m;
1363
1364 if (h->addr.type != PF_ADDR_DYNIFTL)
1365 return (NULL);
1366
1367 if ((n = calloc(1, sizeof(*n))) == NULL)
1368 return (NULL);
1369 bcopy(h, n, sizeof(*n));
1370 n->ifname = NULL;
1371 n->next = NULL;
1372 n->tail = NULL;
1373
1374 /* fix up netmask */
1375 m = &n->addr.v.a.mask;
1376 if (af == AF_INET && unmask(m, AF_INET6) > 32)
1377 set_ipmask(n, 32);
1378
1379 return (n);
1380 }
1381
1382 /* interface lookup routines */
1383
1384 static struct node_host *iftab;
1385
1386 /*
1387 * Retrieve the list of groups this interface is a member of and make sure
1388 * each group is in the group map.
1389 */
1390 static void
ifa_add_groups_to_map(char * ifa_name)1391 ifa_add_groups_to_map(char *ifa_name)
1392 {
1393 int s, len;
1394 struct ifgroupreq ifgr;
1395 struct ifg_req *ifg;
1396
1397 s = get_query_socket();
1398
1399 /* Get size of group list for this interface */
1400 memset(&ifgr, 0, sizeof(ifgr));
1401 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ);
1402 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1403 err(1, "SIOCGIFGROUP");
1404
1405 /* Retrieve group list for this interface */
1406 len = ifgr.ifgr_len;
1407 ifgr.ifgr_groups =
1408 (struct ifg_req *)calloc(len / sizeof(struct ifg_req),
1409 sizeof(struct ifg_req));
1410 if (ifgr.ifgr_groups == NULL)
1411 err(1, "calloc");
1412 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1413 err(1, "SIOCGIFGROUP");
1414
1415 ifg = ifgr.ifgr_groups;
1416 for (; ifg && len >= sizeof(struct ifg_req); ifg++) {
1417 len -= sizeof(struct ifg_req);
1418 if (strcmp(ifg->ifgrq_group, "all")) {
1419 ENTRY item;
1420 ENTRY *ret_item;
1421 int *answer;
1422
1423 item.key = ifg->ifgrq_group;
1424 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) {
1425 struct ifgroupreq ifgr2;
1426
1427 /* Don't know the answer yet */
1428 if ((answer = malloc(sizeof(int))) == NULL)
1429 err(1, "malloc");
1430
1431 bzero(&ifgr2, sizeof(ifgr2));
1432 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group,
1433 sizeof(ifgr2.ifgr_name));
1434 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0)
1435 *answer = ifgr2.ifgr_len;
1436 else
1437 *answer = 0;
1438
1439 item.key = strdup(ifg->ifgrq_group);
1440 item.data = answer;
1441 if (hsearch_r(item, ENTER, &ret_item,
1442 &isgroup_map) == 0)
1443 err(1, "interface group query response"
1444 " map insert");
1445 }
1446 }
1447 }
1448 free(ifgr.ifgr_groups);
1449 }
1450
1451 void
ifa_load(void)1452 ifa_load(void)
1453 {
1454 struct ifaddrs *ifap, *ifa;
1455 struct node_host *n = NULL, *h = NULL;
1456
1457 if (getifaddrs(&ifap) < 0)
1458 err(1, "getifaddrs");
1459
1460 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1461 if (!(ifa->ifa_addr->sa_family == AF_INET ||
1462 ifa->ifa_addr->sa_family == AF_INET6 ||
1463 ifa->ifa_addr->sa_family == AF_LINK))
1464 continue;
1465 n = calloc(1, sizeof(struct node_host));
1466 if (n == NULL)
1467 err(1, "address: calloc");
1468 n->af = ifa->ifa_addr->sa_family;
1469 n->ifa_flags = ifa->ifa_flags;
1470 #ifdef __KAME__
1471 if (n->af == AF_INET6 &&
1472 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
1473 ifa->ifa_addr)->sin6_addr) &&
1474 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
1475 0) {
1476 struct sockaddr_in6 *sin6;
1477
1478 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1479 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
1480 sin6->sin6_addr.s6_addr[3];
1481 sin6->sin6_addr.s6_addr[2] = 0;
1482 sin6->sin6_addr.s6_addr[3] = 0;
1483 }
1484 #endif
1485 n->ifindex = 0;
1486 if (n->af == AF_INET) {
1487 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *)
1488 ifa->ifa_addr)->sin_addr.s_addr,
1489 sizeof(struct in_addr));
1490 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *)
1491 ifa->ifa_netmask)->sin_addr.s_addr,
1492 sizeof(struct in_addr));
1493 if (ifa->ifa_broadaddr != NULL)
1494 memcpy(&n->bcast, &((struct sockaddr_in *)
1495 ifa->ifa_broadaddr)->sin_addr.s_addr,
1496 sizeof(struct in_addr));
1497 if (ifa->ifa_dstaddr != NULL)
1498 memcpy(&n->peer, &((struct sockaddr_in *)
1499 ifa->ifa_dstaddr)->sin_addr.s_addr,
1500 sizeof(struct in_addr));
1501 } else if (n->af == AF_INET6) {
1502 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *)
1503 ifa->ifa_addr)->sin6_addr.s6_addr,
1504 sizeof(struct in6_addr));
1505 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *)
1506 ifa->ifa_netmask)->sin6_addr.s6_addr,
1507 sizeof(struct in6_addr));
1508 if (ifa->ifa_broadaddr != NULL)
1509 memcpy(&n->bcast, &((struct sockaddr_in6 *)
1510 ifa->ifa_broadaddr)->sin6_addr.s6_addr,
1511 sizeof(struct in6_addr));
1512 if (ifa->ifa_dstaddr != NULL)
1513 memcpy(&n->peer, &((struct sockaddr_in6 *)
1514 ifa->ifa_dstaddr)->sin6_addr.s6_addr,
1515 sizeof(struct in6_addr));
1516 n->ifindex = ((struct sockaddr_in6 *)
1517 ifa->ifa_addr)->sin6_scope_id;
1518 } else if (n->af == AF_LINK) {
1519 ifa_add_groups_to_map(ifa->ifa_name);
1520 }
1521 if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
1522 err(1, "ifa_load: strdup");
1523 n->next = NULL;
1524 n->tail = n;
1525 if (h == NULL)
1526 h = n;
1527 else {
1528 h->tail->next = n;
1529 h->tail = n;
1530 }
1531 }
1532
1533 iftab = h;
1534 freeifaddrs(ifap);
1535 }
1536
1537 static int
get_socket_domain(void)1538 get_socket_domain(void)
1539 {
1540 int sdom;
1541
1542 sdom = AF_UNSPEC;
1543 #ifdef WITH_INET6
1544 if (sdom == AF_UNSPEC && feature_present("inet6"))
1545 sdom = AF_INET6;
1546 #endif
1547 #ifdef WITH_INET
1548 if (sdom == AF_UNSPEC && feature_present("inet"))
1549 sdom = AF_INET;
1550 #endif
1551 if (sdom == AF_UNSPEC)
1552 sdom = AF_LINK;
1553
1554 return (sdom);
1555 }
1556
1557 int
get_query_socket(void)1558 get_query_socket(void)
1559 {
1560 static int s = -1;
1561
1562 if (s == -1) {
1563 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1)
1564 err(1, "socket");
1565 }
1566
1567 return (s);
1568 }
1569
1570 /*
1571 * Returns the response len if the name is a group, otherwise returns 0.
1572 */
1573 static int
is_a_group(char * name)1574 is_a_group(char *name)
1575 {
1576 ENTRY item;
1577 ENTRY *ret_item;
1578
1579 item.key = name;
1580 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0)
1581 return (0);
1582
1583 return (*(int *)ret_item->data);
1584 }
1585
1586 struct node_host *
ifa_exists(char * ifa_name)1587 ifa_exists(char *ifa_name)
1588 {
1589 struct node_host *n;
1590
1591 if (iftab == NULL)
1592 ifa_load();
1593
1594 /* check whether this is a group */
1595 if (is_a_group(ifa_name)) {
1596 /* fake a node_host */
1597 if ((n = calloc(1, sizeof(*n))) == NULL)
1598 err(1, "calloc");
1599 if ((n->ifname = strdup(ifa_name)) == NULL)
1600 err(1, "strdup");
1601 return (n);
1602 }
1603
1604 for (n = iftab; n; n = n->next) {
1605 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
1606 return (n);
1607 }
1608
1609 return (NULL);
1610 }
1611
1612 struct node_host *
ifa_grouplookup(char * ifa_name,int flags)1613 ifa_grouplookup(char *ifa_name, int flags)
1614 {
1615 struct ifg_req *ifg;
1616 struct ifgroupreq ifgr;
1617 int s, len;
1618 struct node_host *n, *h = NULL;
1619
1620 s = get_query_socket();
1621 len = is_a_group(ifa_name);
1622 if (len == 0)
1623 return (NULL);
1624 bzero(&ifgr, sizeof(ifgr));
1625 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
1626 ifgr.ifgr_len = len;
1627 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
1628 err(1, "calloc");
1629 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
1630 err(1, "SIOCGIFGMEMB");
1631
1632 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req);
1633 ifg++) {
1634 len -= sizeof(struct ifg_req);
1635 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL)
1636 continue;
1637 if (h == NULL)
1638 h = n;
1639 else {
1640 h->tail->next = n;
1641 h->tail = n->tail;
1642 }
1643 }
1644 free(ifgr.ifgr_groups);
1645
1646 return (h);
1647 }
1648
1649 struct node_host *
ifa_lookup(char * ifa_name,int flags)1650 ifa_lookup(char *ifa_name, int flags)
1651 {
1652 struct node_host *p = NULL, *h = NULL, *n = NULL;
1653 int got4 = 0, got6 = 0;
1654 const char *last_if = NULL;
1655
1656 /* first load iftab and isgroup_map */
1657 if (iftab == NULL)
1658 ifa_load();
1659
1660 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL)
1661 return (h);
1662
1663 if (!strncmp(ifa_name, "self", IFNAMSIZ))
1664 ifa_name = NULL;
1665
1666 for (p = iftab; p; p = p->next) {
1667 if (ifa_skip_if(ifa_name, p))
1668 continue;
1669 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
1670 continue;
1671 if ((flags & PFI_AFLAG_BROADCAST) &&
1672 !(p->ifa_flags & IFF_BROADCAST))
1673 continue;
1674 if ((flags & PFI_AFLAG_PEER) &&
1675 !(p->ifa_flags & IFF_POINTOPOINT))
1676 continue;
1677 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
1678 continue;
1679 if (last_if == NULL || strcmp(last_if, p->ifname))
1680 got4 = got6 = 0;
1681 last_if = p->ifname;
1682 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
1683 continue;
1684 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 &&
1685 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6))
1686 continue;
1687 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
1688 continue;
1689 if (p->af == AF_INET)
1690 got4 = 1;
1691 else
1692 got6 = 1;
1693 n = calloc(1, sizeof(struct node_host));
1694 if (n == NULL)
1695 err(1, "address: calloc");
1696 n->af = p->af;
1697 if (flags & PFI_AFLAG_BROADCAST)
1698 memcpy(&n->addr.v.a.addr, &p->bcast,
1699 sizeof(struct pf_addr));
1700 else if (flags & PFI_AFLAG_PEER)
1701 memcpy(&n->addr.v.a.addr, &p->peer,
1702 sizeof(struct pf_addr));
1703 else
1704 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
1705 sizeof(struct pf_addr));
1706 if (flags & PFI_AFLAG_NETWORK)
1707 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af));
1708 else {
1709 if (n->af == AF_INET) {
1710 if (p->ifa_flags & IFF_LOOPBACK &&
1711 p->ifa_flags & IFF_LINK1)
1712 memcpy(&n->addr.v.a.mask,
1713 &p->addr.v.a.mask,
1714 sizeof(struct pf_addr));
1715 else
1716 set_ipmask(n, 32);
1717 } else
1718 set_ipmask(n, 128);
1719 }
1720 n->ifindex = p->ifindex;
1721 n->ifname = strdup(p->ifname);
1722
1723 n->next = NULL;
1724 n->tail = n;
1725 if (h == NULL)
1726 h = n;
1727 else {
1728 h->tail->next = n;
1729 h->tail = n;
1730 }
1731 }
1732 return (h);
1733 }
1734
1735 int
ifa_skip_if(const char * filter,struct node_host * p)1736 ifa_skip_if(const char *filter, struct node_host *p)
1737 {
1738 int n;
1739
1740 if (p->af != AF_INET && p->af != AF_INET6)
1741 return (1);
1742 if (filter == NULL || !*filter)
1743 return (0);
1744 if (!strcmp(p->ifname, filter))
1745 return (0); /* exact match */
1746 n = strlen(filter);
1747 if (n < 1 || n >= IFNAMSIZ)
1748 return (1); /* sanity check */
1749 if (filter[n-1] >= '0' && filter[n-1] <= '9')
1750 return (1); /* only do exact match in that case */
1751 if (strncmp(p->ifname, filter, n))
1752 return (1); /* prefix doesn't match */
1753 return (p->ifname[n] < '0' || p->ifname[n] > '9');
1754 }
1755
1756
1757 struct node_host *
host(const char * s)1758 host(const char *s)
1759 {
1760 struct node_host *h = NULL;
1761 int mask, v4mask, v6mask, cont = 1;
1762 char *p, *q, *ps;
1763
1764 if ((p = strrchr(s, '/')) != NULL) {
1765 mask = strtol(p+1, &q, 0);
1766 if (!q || *q || mask > 128 || q == (p+1)) {
1767 fprintf(stderr, "invalid netmask '%s'\n", p);
1768 return (NULL);
1769 }
1770 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
1771 err(1, "host: malloc");
1772 strlcpy(ps, s, strlen(s) - strlen(p) + 1);
1773 v4mask = v6mask = mask;
1774 } else {
1775 if ((ps = strdup(s)) == NULL)
1776 err(1, "host: strdup");
1777 v4mask = 32;
1778 v6mask = 128;
1779 mask = -1;
1780 }
1781
1782 /* IPv4 address? */
1783 if (cont && (h = host_v4(s, mask)) != NULL)
1784 cont = 0;
1785
1786 /* IPv6 address? */
1787 if (cont && (h = host_v6(ps, v6mask)) != NULL)
1788 cont = 0;
1789
1790 /* interface with this name exists? */
1791 /* expensive with thousands of interfaces - prioritze IPv4/6 check */
1792 if (cont && (h = host_if(ps, mask, &cont)) != NULL)
1793 cont = 0;
1794
1795 /* dns lookup */
1796 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL)
1797 cont = 0;
1798 free(ps);
1799
1800 if (h == NULL || cont == 1) {
1801 fprintf(stderr, "no IP address found for %s\n", s);
1802 return (NULL);
1803 }
1804 return (h);
1805 }
1806
1807 struct node_host *
host_if(const char * s,int mask,int * cont)1808 host_if(const char *s, int mask, int *cont)
1809 {
1810 struct node_host *n, *h = NULL;
1811 char *p, *ps;
1812 int flags = 0;
1813
1814 if ((ps = strdup(s)) == NULL)
1815 err(1, "host_if: strdup");
1816 while ((p = strrchr(ps, ':')) != NULL) {
1817 if (!strcmp(p+1, "network"))
1818 flags |= PFI_AFLAG_NETWORK;
1819 else if (!strcmp(p+1, "broadcast"))
1820 flags |= PFI_AFLAG_BROADCAST;
1821 else if (!strcmp(p+1, "peer"))
1822 flags |= PFI_AFLAG_PEER;
1823 else if (!strcmp(p+1, "0"))
1824 flags |= PFI_AFLAG_NOALIAS;
1825 else {
1826 free(ps);
1827 return (NULL);
1828 }
1829 *p = '\0';
1830 *cont = 0;
1831 }
1832 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
1833 fprintf(stderr, "illegal combination of interface modifiers\n");
1834 free(ps);
1835 return (NULL);
1836 }
1837 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
1838 fprintf(stderr, "network or broadcast lookup, but "
1839 "extra netmask given\n");
1840 free(ps);
1841 return (NULL);
1842 }
1843 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) {
1844 /* interface with this name exists */
1845 h = ifa_lookup(ps, flags);
1846 for (n = h; n != NULL && mask > -1; n = n->next)
1847 set_ipmask(n, mask);
1848 }
1849
1850 free(ps);
1851 return (h);
1852 }
1853
1854 struct node_host *
host_v4(const char * s,int mask)1855 host_v4(const char *s, int mask)
1856 {
1857 struct node_host *h = NULL;
1858 struct in_addr ina;
1859 int bits = 32;
1860
1861 memset(&ina, 0, sizeof(struct in_addr));
1862 if (strrchr(s, '/') != NULL) {
1863 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1)
1864 return (NULL);
1865 } else {
1866 if (inet_pton(AF_INET, s, &ina) != 1)
1867 return (NULL);
1868 }
1869
1870 h = calloc(1, sizeof(struct node_host));
1871 if (h == NULL)
1872 err(1, "address: calloc");
1873 h->ifname = NULL;
1874 h->af = AF_INET;
1875 h->addr.v.a.addr.addr32[0] = ina.s_addr;
1876 set_ipmask(h, bits);
1877 h->next = NULL;
1878 h->tail = h;
1879
1880 return (h);
1881 }
1882
1883 struct node_host *
host_v6(const char * s,int mask)1884 host_v6(const char *s, int mask)
1885 {
1886 struct addrinfo hints, *res;
1887 struct node_host *h = NULL;
1888
1889 memset(&hints, 0, sizeof(hints));
1890 hints.ai_family = AF_INET6;
1891 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1892 hints.ai_flags = AI_NUMERICHOST;
1893 if (getaddrinfo(s, "0", &hints, &res) == 0) {
1894 h = calloc(1, sizeof(struct node_host));
1895 if (h == NULL)
1896 err(1, "address: calloc");
1897 h->ifname = NULL;
1898 h->af = AF_INET6;
1899 memcpy(&h->addr.v.a.addr,
1900 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
1901 sizeof(h->addr.v.a.addr));
1902 h->ifindex =
1903 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1904 set_ipmask(h, mask);
1905 freeaddrinfo(res);
1906 h->next = NULL;
1907 h->tail = h;
1908 }
1909
1910 return (h);
1911 }
1912
1913 struct node_host *
host_dns(const char * s,int v4mask,int v6mask)1914 host_dns(const char *s, int v4mask, int v6mask)
1915 {
1916 struct addrinfo hints, *res0, *res;
1917 struct node_host *n, *h = NULL;
1918 int error, noalias = 0;
1919 int got4 = 0, got6 = 0;
1920 char *p, *ps;
1921
1922 if ((ps = strdup(s)) == NULL)
1923 err(1, "host_dns: strdup");
1924 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
1925 noalias = 1;
1926 *p = '\0';
1927 }
1928 memset(&hints, 0, sizeof(hints));
1929 hints.ai_family = PF_UNSPEC;
1930 hints.ai_socktype = SOCK_STREAM; /* DUMMY */
1931 error = getaddrinfo(ps, NULL, &hints, &res0);
1932 if (error) {
1933 free(ps);
1934 return (h);
1935 }
1936
1937 for (res = res0; res; res = res->ai_next) {
1938 if (res->ai_family != AF_INET &&
1939 res->ai_family != AF_INET6)
1940 continue;
1941 if (noalias) {
1942 if (res->ai_family == AF_INET) {
1943 if (got4)
1944 continue;
1945 got4 = 1;
1946 } else {
1947 if (got6)
1948 continue;
1949 got6 = 1;
1950 }
1951 }
1952 n = calloc(1, sizeof(struct node_host));
1953 if (n == NULL)
1954 err(1, "host_dns: calloc");
1955 n->ifname = NULL;
1956 n->af = res->ai_family;
1957 if (res->ai_family == AF_INET) {
1958 memcpy(&n->addr.v.a.addr,
1959 &((struct sockaddr_in *)
1960 res->ai_addr)->sin_addr.s_addr,
1961 sizeof(struct in_addr));
1962 set_ipmask(n, v4mask);
1963 } else {
1964 memcpy(&n->addr.v.a.addr,
1965 &((struct sockaddr_in6 *)
1966 res->ai_addr)->sin6_addr.s6_addr,
1967 sizeof(struct in6_addr));
1968 n->ifindex =
1969 ((struct sockaddr_in6 *)
1970 res->ai_addr)->sin6_scope_id;
1971 set_ipmask(n, v6mask);
1972 }
1973 n->next = NULL;
1974 n->tail = n;
1975 if (h == NULL)
1976 h = n;
1977 else {
1978 h->tail->next = n;
1979 h->tail = n;
1980 }
1981 }
1982 freeaddrinfo(res0);
1983 free(ps);
1984
1985 return (h);
1986 }
1987
1988 /*
1989 * convert a hostname to a list of addresses and put them in the given buffer.
1990 * test:
1991 * if set to 1, only simple addresses are accepted (no netblock, no "!").
1992 */
1993 int
append_addr(struct pfr_buffer * b,char * s,int test)1994 append_addr(struct pfr_buffer *b, char *s, int test)
1995 {
1996 char *r;
1997 struct node_host *h, *n;
1998 int rv, not = 0;
1999
2000 for (r = s; *r == '!'; r++)
2001 not = !not;
2002 if ((n = host(r)) == NULL) {
2003 errno = 0;
2004 return (-1);
2005 }
2006 rv = append_addr_host(b, n, test, not);
2007 do {
2008 h = n;
2009 n = n->next;
2010 free(h);
2011 } while (n != NULL);
2012 return (rv);
2013 }
2014
2015 /*
2016 * same as previous function, but with a pre-parsed input and the ability
2017 * to "negate" the result. Does not free the node_host list.
2018 * not:
2019 * setting it to 1 is equivalent to adding "!" in front of parameter s.
2020 */
2021 int
append_addr_host(struct pfr_buffer * b,struct node_host * n,int test,int not)2022 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
2023 {
2024 int bits;
2025 struct pfr_addr addr;
2026
2027 do {
2028 bzero(&addr, sizeof(addr));
2029 addr.pfra_not = n->not ^ not;
2030 addr.pfra_af = n->af;
2031 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af);
2032 switch (n->af) {
2033 case AF_INET:
2034 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
2035 bits = 32;
2036 break;
2037 case AF_INET6:
2038 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
2039 sizeof(struct in6_addr));
2040 bits = 128;
2041 break;
2042 default:
2043 errno = EINVAL;
2044 return (-1);
2045 }
2046 if ((test && (not || addr.pfra_net != bits)) ||
2047 addr.pfra_net > bits) {
2048 errno = EINVAL;
2049 return (-1);
2050 }
2051 if (pfr_buf_add(b, &addr))
2052 return (-1);
2053 } while ((n = n->next) != NULL);
2054
2055 return (0);
2056 }
2057
2058 int
pfctl_add_trans(struct pfr_buffer * buf,int rs_num,const char * anchor)2059 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor)
2060 {
2061 struct pfioc_trans_e trans;
2062
2063 bzero(&trans, sizeof(trans));
2064 trans.rs_num = rs_num;
2065 if (strlcpy(trans.anchor, anchor,
2066 sizeof(trans.anchor)) >= sizeof(trans.anchor))
2067 errx(1, "pfctl_add_trans: strlcpy");
2068
2069 return pfr_buf_add(buf, &trans);
2070 }
2071
2072 u_int32_t
pfctl_get_ticket(struct pfr_buffer * buf,int rs_num,const char * anchor)2073 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor)
2074 {
2075 struct pfioc_trans_e *p;
2076
2077 PFRB_FOREACH(p, buf)
2078 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor))
2079 return (p->ticket);
2080 errx(1, "pfctl_get_ticket: assertion failed");
2081 }
2082
2083 int
pfctl_trans(int dev,struct pfr_buffer * buf,u_long cmd,int from)2084 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
2085 {
2086 struct pfioc_trans trans;
2087
2088 bzero(&trans, sizeof(trans));
2089 trans.size = buf->pfrb_size - from;
2090 trans.esize = sizeof(struct pfioc_trans_e);
2091 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
2092 return ioctl(dev, cmd, &trans);
2093 }
2094