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 <inttypes.h>
62 #include <unistd.h>
63
64 #include "pfctl_parser.h"
65 #include "pfctl.h"
66
67 void print_op (u_int8_t, const char *, const char *);
68 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int);
69 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned);
70 void print_flags (u_int8_t);
71 void print_fromto(struct pf_rule_addr *, pf_osfp_t,
72 struct pf_rule_addr *, sa_family_t, u_int8_t, int, int);
73 int ifa_skip_if(const char *filter, struct node_host *p);
74
75 struct node_host *host_if(const char *, int, int *);
76 struct node_host *host_v4(const char *, int);
77 struct node_host *host_v6(const char *, int);
78 struct node_host *host_dns(const char *, int, int);
79
80 const char * const tcpflags = "FSRPAUEW";
81
82 static const struct icmptypeent icmp_type[] = {
83 { "echoreq", ICMP_ECHO },
84 { "echorep", ICMP_ECHOREPLY },
85 { "unreach", ICMP_UNREACH },
86 { "squench", ICMP_SOURCEQUENCH },
87 { "redir", ICMP_REDIRECT },
88 { "althost", ICMP_ALTHOSTADDR },
89 { "routeradv", ICMP_ROUTERADVERT },
90 { "routersol", ICMP_ROUTERSOLICIT },
91 { "timex", ICMP_TIMXCEED },
92 { "paramprob", ICMP_PARAMPROB },
93 { "timereq", ICMP_TSTAMP },
94 { "timerep", ICMP_TSTAMPREPLY },
95 { "inforeq", ICMP_IREQ },
96 { "inforep", ICMP_IREQREPLY },
97 { "maskreq", ICMP_MASKREQ },
98 { "maskrep", ICMP_MASKREPLY },
99 { "trace", ICMP_TRACEROUTE },
100 { "dataconv", ICMP_DATACONVERR },
101 { "mobredir", ICMP_MOBILE_REDIRECT },
102 { "ipv6-where", ICMP_IPV6_WHEREAREYOU },
103 { "ipv6-here", ICMP_IPV6_IAMHERE },
104 { "mobregreq", ICMP_MOBILE_REGREQUEST },
105 { "mobregrep", ICMP_MOBILE_REGREPLY },
106 { "skip", ICMP_SKIP },
107 { "photuris", ICMP_PHOTURIS }
108 };
109
110 static const struct icmptypeent icmp6_type[] = {
111 { "unreach", ICMP6_DST_UNREACH },
112 { "toobig", ICMP6_PACKET_TOO_BIG },
113 { "timex", ICMP6_TIME_EXCEEDED },
114 { "paramprob", ICMP6_PARAM_PROB },
115 { "echoreq", ICMP6_ECHO_REQUEST },
116 { "echorep", ICMP6_ECHO_REPLY },
117 { "groupqry", ICMP6_MEMBERSHIP_QUERY },
118 { "listqry", MLD_LISTENER_QUERY },
119 { "grouprep", ICMP6_MEMBERSHIP_REPORT },
120 { "listenrep", MLD_LISTENER_REPORT },
121 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION },
122 { "listendone", MLD_LISTENER_DONE },
123 { "routersol", ND_ROUTER_SOLICIT },
124 { "routeradv", ND_ROUTER_ADVERT },
125 { "neighbrsol", ND_NEIGHBOR_SOLICIT },
126 { "neighbradv", ND_NEIGHBOR_ADVERT },
127 { "redir", ND_REDIRECT },
128 { "routrrenum", ICMP6_ROUTER_RENUMBERING },
129 { "wrureq", ICMP6_WRUREQUEST },
130 { "wrurep", ICMP6_WRUREPLY },
131 { "fqdnreq", ICMP6_FQDN_QUERY },
132 { "fqdnrep", ICMP6_FQDN_REPLY },
133 { "niqry", ICMP6_NI_QUERY },
134 { "nirep", ICMP6_NI_REPLY },
135 { "mtraceresp", MLD_MTRACE_RESP },
136 { "mtrace", MLD_MTRACE }
137 };
138
139 static const struct icmpcodeent icmp_code[] = {
140 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET },
141 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST },
142 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL },
143 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT },
144 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG },
145 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL },
146 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN },
147 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN },
148 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED },
149 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB },
150 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB },
151 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET },
152 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST },
153 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB },
154 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE },
155 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF },
156 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET },
157 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST },
158 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET },
159 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST },
160 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL },
161 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON },
162 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS },
163 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS },
164 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR },
165 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT },
166 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH },
167 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX },
168 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED },
169 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED }
170 };
171
172 static const struct icmpcodeent icmp6_code[] = {
173 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN },
174 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE },
175 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR },
176 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE },
177 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR },
178 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT },
179 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT },
180 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY },
181 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER },
182 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER },
183 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK },
184 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER }
185 };
186
187 const struct pf_timeout pf_timeouts[] = {
188 { "tcp.first", PFTM_TCP_FIRST_PACKET },
189 { "tcp.opening", PFTM_TCP_OPENING },
190 { "tcp.established", PFTM_TCP_ESTABLISHED },
191 { "tcp.closing", PFTM_TCP_CLOSING },
192 { "tcp.finwait", PFTM_TCP_FIN_WAIT },
193 { "tcp.closed", PFTM_TCP_CLOSED },
194 { "tcp.tsdiff", PFTM_TS_DIFF },
195 { "sctp.first", PFTM_SCTP_FIRST_PACKET },
196 { "sctp.opening", PFTM_SCTP_OPENING },
197 { "sctp.established", PFTM_SCTP_ESTABLISHED },
198 { "sctp.closing", PFTM_SCTP_CLOSING },
199 { "sctp.closed", PFTM_SCTP_CLOSED },
200 { "udp.first", PFTM_UDP_FIRST_PACKET },
201 { "udp.single", PFTM_UDP_SINGLE },
202 { "udp.multiple", PFTM_UDP_MULTIPLE },
203 { "icmp.first", PFTM_ICMP_FIRST_PACKET },
204 { "icmp.error", PFTM_ICMP_ERROR_REPLY },
205 { "other.first", PFTM_OTHER_FIRST_PACKET },
206 { "other.single", PFTM_OTHER_SINGLE },
207 { "other.multiple", PFTM_OTHER_MULTIPLE },
208 { "frag", PFTM_FRAG },
209 { "interval", PFTM_INTERVAL },
210 { "adaptive.start", PFTM_ADAPTIVE_START },
211 { "adaptive.end", PFTM_ADAPTIVE_END },
212 { "src.track", PFTM_SRC_NODE },
213 { NULL, 0 }
214 };
215
216 static struct hsearch_data isgroup_map;
217
218 static __attribute__((constructor)) void
pfctl_parser_init(void)219 pfctl_parser_init(void)
220 {
221 /*
222 * As hdestroy() will never be called on these tables, it will be
223 * safe to use references into the stored data as keys.
224 */
225 if (hcreate_r(0, &isgroup_map) == 0)
226 err(1, "Failed to create interface group query response map");
227 }
228
229 const struct icmptypeent *
geticmptypebynumber(u_int8_t type,sa_family_t af)230 geticmptypebynumber(u_int8_t type, sa_family_t af)
231 {
232 unsigned int i;
233
234 if (af != AF_INET6) {
235 for (i=0; i < nitems(icmp_type); i++) {
236 if (type == icmp_type[i].type)
237 return (&icmp_type[i]);
238 }
239 } else {
240 for (i=0; i < nitems(icmp6_type); i++) {
241 if (type == icmp6_type[i].type)
242 return (&icmp6_type[i]);
243 }
244 }
245 return (NULL);
246 }
247
248 const struct icmptypeent *
geticmptypebyname(char * w,sa_family_t af)249 geticmptypebyname(char *w, sa_family_t af)
250 {
251 unsigned int i;
252
253 if (af != AF_INET6) {
254 for (i=0; i < nitems(icmp_type); i++) {
255 if (!strcmp(w, icmp_type[i].name))
256 return (&icmp_type[i]);
257 }
258 } else {
259 for (i=0; i < nitems(icmp6_type); i++) {
260 if (!strcmp(w, icmp6_type[i].name))
261 return (&icmp6_type[i]);
262 }
263 }
264 return (NULL);
265 }
266
267 const struct icmpcodeent *
geticmpcodebynumber(u_int8_t type,u_int8_t code,sa_family_t af)268 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af)
269 {
270 unsigned int i;
271
272 if (af != AF_INET6) {
273 for (i=0; i < nitems(icmp_code); i++) {
274 if (type == icmp_code[i].type &&
275 code == icmp_code[i].code)
276 return (&icmp_code[i]);
277 }
278 } else {
279 for (i=0; i < nitems(icmp6_code); i++) {
280 if (type == icmp6_code[i].type &&
281 code == icmp6_code[i].code)
282 return (&icmp6_code[i]);
283 }
284 }
285 return (NULL);
286 }
287
288 const struct icmpcodeent *
geticmpcodebyname(u_long type,char * w,sa_family_t af)289 geticmpcodebyname(u_long type, char *w, sa_family_t af)
290 {
291 unsigned int i;
292
293 if (af != AF_INET6) {
294 for (i=0; i < nitems(icmp_code); i++) {
295 if (type == icmp_code[i].type &&
296 !strcmp(w, icmp_code[i].name))
297 return (&icmp_code[i]);
298 }
299 } else {
300 for (i=0; i < nitems(icmp6_code); i++) {
301 if (type == icmp6_code[i].type &&
302 !strcmp(w, icmp6_code[i].name))
303 return (&icmp6_code[i]);
304 }
305 }
306 return (NULL);
307 }
308
309 void
print_op(u_int8_t op,const char * a1,const char * a2)310 print_op(u_int8_t op, const char *a1, const char *a2)
311 {
312 if (op == PF_OP_IRG)
313 printf(" %s >< %s", a1, a2);
314 else if (op == PF_OP_XRG)
315 printf(" %s <> %s", a1, a2);
316 else if (op == PF_OP_EQ)
317 printf(" = %s", a1);
318 else if (op == PF_OP_NE)
319 printf(" != %s", a1);
320 else if (op == PF_OP_LT)
321 printf(" < %s", a1);
322 else if (op == PF_OP_LE)
323 printf(" <= %s", a1);
324 else if (op == PF_OP_GT)
325 printf(" > %s", a1);
326 else if (op == PF_OP_GE)
327 printf(" >= %s", a1);
328 else if (op == PF_OP_RRG)
329 printf(" %s:%s", a1, a2);
330 }
331
332 void
print_port(u_int8_t op,u_int16_t p1,u_int16_t p2,const char * proto,int numeric)333 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric)
334 {
335 char a1[6], a2[6];
336 struct servent *s;
337
338 if (!numeric)
339 s = getservbyport(p1, proto);
340 else
341 s = NULL;
342 p1 = ntohs(p1);
343 p2 = ntohs(p2);
344 snprintf(a1, sizeof(a1), "%u", p1);
345 snprintf(a2, sizeof(a2), "%u", p2);
346 printf(" port");
347 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE))
348 print_op(op, s->s_name, a2);
349 else
350 print_op(op, a1, a2);
351 }
352
353 void
print_ugid(u_int8_t op,unsigned u1,unsigned u2,const char * t,unsigned umax)354 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax)
355 {
356 char a1[11], a2[11];
357
358 snprintf(a1, sizeof(a1), "%u", u1);
359 snprintf(a2, sizeof(a2), "%u", u2);
360 printf(" %s", t);
361 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE))
362 print_op(op, "unknown", a2);
363 else
364 print_op(op, a1, a2);
365 }
366
367 void
print_flags(u_int8_t f)368 print_flags(u_int8_t f)
369 {
370 int i;
371
372 for (i = 0; tcpflags[i]; ++i)
373 if (f & (1 << i))
374 printf("%c", tcpflags[i]);
375 }
376
377 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)378 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst,
379 sa_family_t af, u_int8_t proto, int verbose, int numeric)
380 {
381 char buf[PF_OSFP_LEN*3];
382 if (src->addr.type == PF_ADDR_ADDRMASK &&
383 dst->addr.type == PF_ADDR_ADDRMASK &&
384 PF_AZERO(&src->addr.v.a.addr, AF_INET6) &&
385 PF_AZERO(&src->addr.v.a.mask, AF_INET6) &&
386 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) &&
387 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) &&
388 !src->neg && !dst->neg &&
389 !src->port_op && !dst->port_op &&
390 osfp == PF_OSFP_ANY)
391 printf(" all");
392 else {
393 printf(" from ");
394 if (src->neg)
395 printf("! ");
396 print_addr(&src->addr, af, verbose);
397 if (src->port_op)
398 print_port(src->port_op, src->port[0],
399 src->port[1],
400 proto == IPPROTO_TCP ? "tcp" : "udp",
401 numeric);
402 if (osfp != PF_OSFP_ANY)
403 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf,
404 sizeof(buf)));
405
406 printf(" to ");
407 if (dst->neg)
408 printf("! ");
409 print_addr(&dst->addr, af, verbose);
410 if (dst->port_op)
411 print_port(dst->port_op, dst->port[0],
412 dst->port[1],
413 proto == IPPROTO_TCP ? "tcp" : "udp",
414 numeric);
415 }
416 }
417
418 void
print_pool(struct pfctl_pool * pool,u_int16_t p1,u_int16_t p2,sa_family_t af,int id)419 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2,
420 sa_family_t af, int id)
421 {
422 struct pf_pooladdr *pooladdr;
423
424 if ((TAILQ_FIRST(&pool->list) != NULL) &&
425 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
426 printf("{ ");
427 TAILQ_FOREACH(pooladdr, &pool->list, entries){
428 switch (id) {
429 case PF_NAT:
430 case PF_RDR:
431 case PF_BINAT:
432 print_addr(&pooladdr->addr, af, 0);
433 break;
434 case PF_PASS:
435 case PF_MATCH:
436 if (PF_AZERO(&pooladdr->addr.v.a.addr, af))
437 printf("%s", pooladdr->ifname);
438 else {
439 printf("(%s ", pooladdr->ifname);
440 print_addr(&pooladdr->addr, af, 0);
441 printf(")");
442 }
443 break;
444 default:
445 break;
446 }
447 if (TAILQ_NEXT(pooladdr, entries) != NULL)
448 printf(", ");
449 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
450 printf(" }");
451 }
452 switch (id) {
453 case PF_NAT:
454 if ((p1 != PF_NAT_PROXY_PORT_LOW ||
455 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) {
456 if (p1 == p2)
457 printf(" port %u", p1);
458 else
459 printf(" port %u:%u", p1, p2);
460 }
461 break;
462 case PF_RDR:
463 if (p1) {
464 printf(" port %u", p1);
465 if (p2 && (p2 != p1))
466 printf(":%u", p2);
467 }
468 break;
469 default:
470 break;
471 }
472 switch (pool->opts & PF_POOL_TYPEMASK) {
473 case PF_POOL_NONE:
474 break;
475 case PF_POOL_BITMASK:
476 printf(" bitmask");
477 break;
478 case PF_POOL_RANDOM:
479 printf(" random");
480 break;
481 case PF_POOL_SRCHASH:
482 printf(" source-hash 0x%08x%08x%08x%08x",
483 pool->key.key32[0], pool->key.key32[1],
484 pool->key.key32[2], pool->key.key32[3]);
485 break;
486 case PF_POOL_ROUNDROBIN:
487 printf(" round-robin");
488 break;
489 }
490 if (pool->opts & PF_POOL_STICKYADDR)
491 printf(" sticky-address");
492 if (pool->opts & PF_POOL_ENDPI)
493 printf(" endpoint-independent");
494 if (id == PF_NAT && p1 == 0 && p2 == 0)
495 printf(" static-port");
496 if (pool->mape.offset > 0)
497 printf(" map-e-portset %u/%u/%u",
498 pool->mape.offset, pool->mape.psidlen, pool->mape.psid);
499 }
500
501 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES;
502 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES;
503 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES;
504 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES;
505
506 void
print_status(struct pfctl_status * s,struct pfctl_syncookies * cookies,int opts)507 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts)
508 {
509 struct pfctl_status_counter *c;
510 char statline[80], *running;
511 time_t runtime;
512 int i;
513 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1];
514 static const char hex[] = "0123456789abcdef";
515
516 runtime = time(NULL) - s->since;
517 running = s->running ? "Enabled" : "Disabled";
518
519 if (s->since) {
520 unsigned int sec, min, hrs, day = runtime;
521
522 sec = day % 60;
523 day /= 60;
524 min = day % 60;
525 day /= 60;
526 hrs = day % 24;
527 day /= 24;
528 snprintf(statline, sizeof(statline),
529 "Status: %s for %u days %.2u:%.2u:%.2u",
530 running, day, hrs, min, sec);
531 } else
532 snprintf(statline, sizeof(statline), "Status: %s", running);
533 printf("%-44s", statline);
534 switch (s->debug) {
535 case PF_DEBUG_NONE:
536 printf("%15s\n\n", "Debug: None");
537 break;
538 case PF_DEBUG_URGENT:
539 printf("%15s\n\n", "Debug: Urgent");
540 break;
541 case PF_DEBUG_MISC:
542 printf("%15s\n\n", "Debug: Misc");
543 break;
544 case PF_DEBUG_NOISY:
545 printf("%15s\n\n", "Debug: Loud");
546 break;
547 }
548
549 if (opts & PF_OPT_VERBOSE) {
550 printf("Hostid: 0x%08x\n", s->hostid);
551
552 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) {
553 buf[i + i] = hex[s->pf_chksum[i] >> 4];
554 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f];
555 }
556 buf[i + i] = '\0';
557 printf("Checksum: 0x%s\n\n", buf);
558 }
559
560 if (s->ifname[0] != 0) {
561 printf("Interface Stats for %-16s %5s %16s\n",
562 s->ifname, "IPv4", "IPv6");
563 printf(" %-25s %14llu %16llu\n", "Bytes In",
564 (unsigned long long)s->bcounters[0][0],
565 (unsigned long long)s->bcounters[1][0]);
566 printf(" %-25s %14llu %16llu\n", "Bytes Out",
567 (unsigned long long)s->bcounters[0][1],
568 (unsigned long long)s->bcounters[1][1]);
569 printf(" Packets In\n");
570 printf(" %-23s %14llu %16llu\n", "Passed",
571 (unsigned long long)s->pcounters[0][0][PF_PASS],
572 (unsigned long long)s->pcounters[1][0][PF_PASS]);
573 printf(" %-23s %14llu %16llu\n", "Blocked",
574 (unsigned long long)s->pcounters[0][0][PF_DROP],
575 (unsigned long long)s->pcounters[1][0][PF_DROP]);
576 printf(" Packets Out\n");
577 printf(" %-23s %14llu %16llu\n", "Passed",
578 (unsigned long long)s->pcounters[0][1][PF_PASS],
579 (unsigned long long)s->pcounters[1][1][PF_PASS]);
580 printf(" %-23s %14llu %16llu\n\n", "Blocked",
581 (unsigned long long)s->pcounters[0][1][PF_DROP],
582 (unsigned long long)s->pcounters[1][1][PF_DROP]);
583 }
584 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
585 printf(" %-25s %14ju %14s\n", "current entries", s->states, "");
586 TAILQ_FOREACH(c, &s->fcounters, entry) {
587 printf(" %-25s %14ju ", c->name, c->counter);
588 if (runtime > 0)
589 printf("%14.1f/s\n",
590 (double)c->counter / (double)runtime);
591 else
592 printf("%14s\n", "");
593 }
594 if (opts & PF_OPT_VERBOSE) {
595 printf("Source Tracking Table\n");
596 printf(" %-25s %14ju %14s\n", "current entries",
597 s->src_nodes, "");
598 TAILQ_FOREACH(c, &s->scounters, entry) {
599 printf(" %-25s %14ju ", c->name, c->counter);
600 if (runtime > 0)
601 printf("%14.1f/s\n",
602 (double)c->counter / (double)runtime);
603 else
604 printf("%14s\n", "");
605 }
606 }
607 printf("Counters\n");
608 TAILQ_FOREACH(c, &s->counters, entry) {
609 printf(" %-25s %14ju ", c->name, c->counter);
610 if (runtime > 0)
611 printf("%14.1f/s\n",
612 (double)c->counter / (double)runtime);
613 else
614 printf("%14s\n", "");
615 }
616 if (opts & PF_OPT_VERBOSE) {
617 printf("Limit Counters\n");
618 TAILQ_FOREACH(c, &s->lcounters, entry) {
619 printf(" %-25s %14ju ", c->name, c->counter);
620 if (runtime > 0)
621 printf("%14.1f/s\n",
622 (double)c->counter / (double)runtime);
623 else
624 printf("%14s\n", "");
625 }
626
627 printf("Syncookies\n");
628 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE);
629 printf(" %-25s %s\n", "mode",
630 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]);
631 printf(" %-25s %s\n", "active",
632 s->syncookies_active ? "active" : "inactive");
633 if (opts & PF_OPT_VERBOSE2) {
634 printf(" %-25s %d %%\n", "highwater", cookies->highwater);
635 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater);
636 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states);
637 }
638 printf("Reassemble %24s %s\n",
639 s->reass & PF_REASS_ENABLED ? "yes" : "no",
640 s->reass & PF_REASS_NODF ? "no-df" : ""
641 );
642 }
643 }
644
645 void
print_running(struct pfctl_status * status)646 print_running(struct pfctl_status *status)
647 {
648 printf("%s\n", status->running ? "Enabled" : "Disabled");
649 }
650
651 void
print_src_node(struct pfctl_src_node * sn,int opts)652 print_src_node(struct pfctl_src_node *sn, int opts)
653 {
654 struct pf_addr_wrap aw;
655 uint64_t min, sec;
656
657 memset(&aw, 0, sizeof(aw));
658 if (sn->af == AF_INET)
659 aw.v.a.mask.addr32[0] = 0xffffffff;
660 else
661 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
662
663 aw.v.a.addr = sn->addr;
664 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
665 printf(" -> ");
666 aw.v.a.addr = sn->raddr;
667 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
668 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states,
669 sn->conn, sn->conn_rate.count / 1000,
670 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds);
671 if (opts & PF_OPT_VERBOSE) {
672 sec = sn->creation % 60;
673 sn->creation /= 60;
674 min = sn->creation % 60;
675 sn->creation /= 60;
676 printf(" age %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64,
677 sn->creation, min, sec);
678 if (sn->states == 0) {
679 sec = sn->expire % 60;
680 sn->expire /= 60;
681 min = sn->expire % 60;
682 sn->expire /= 60;
683 printf(", expires in %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64,
684 sn->expire, min, sec);
685 }
686 printf(", %" PRIu64 " pkts, %" PRIu64 " bytes",
687 sn->packets[0] + sn->packets[1],
688 sn->bytes[0] + sn->bytes[1]);
689 switch (sn->ruletype) {
690 case PF_NAT:
691 if (sn->rule != -1)
692 printf(", nat rule %u", sn->rule);
693 break;
694 case PF_RDR:
695 if (sn->rule != -1)
696 printf(", rdr rule %u", sn->rule);
697 break;
698 case PF_PASS:
699 case PF_MATCH:
700 if (sn->rule != -1)
701 printf(", filter rule %u", sn->rule);
702 break;
703 }
704 printf("\n");
705 }
706 }
707
708 static void
print_eth_addr(const struct pfctl_eth_addr * a)709 print_eth_addr(const struct pfctl_eth_addr *a)
710 {
711 int i, masklen = ETHER_ADDR_LEN * 8;
712 bool seen_unset = false;
713
714 for (i = 0; i < ETHER_ADDR_LEN; i++) {
715 if (a->addr[i] != 0)
716 break;
717 }
718
719 /* Unset, so don't print anything. */
720 if (i == ETHER_ADDR_LEN)
721 return;
722
723 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "",
724 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4],
725 a->addr[5]);
726
727 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) {
728 bool isset = a->mask[i / 8] & (1 << i % 8);
729
730 if (! seen_unset) {
731 if (isset)
732 continue;
733 seen_unset = true;
734 masklen = i;
735 } else {
736 /* Not actually a continuous mask, so print the whole
737 * thing. */
738 if (isset)
739 break;
740 continue;
741 }
742 }
743
744 if (masklen == (ETHER_ADDR_LEN * 8))
745 return;
746
747 if (i == (ETHER_ADDR_LEN * 8)) {
748 printf("/%d", masklen);
749 return;
750 }
751
752 printf("&%02x:%02x:%02x:%02x:%02x:%02x",
753 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4],
754 a->mask[5]);
755 }
756
757 void
print_eth_rule(struct pfctl_eth_rule * r,const char * anchor_call,int rule_numbers)758 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call,
759 int rule_numbers)
760 {
761 static const char *actiontypes[] = { "pass", "block", "", "", "", "",
762 "", "", "", "", "", "", "match" };
763
764 int i;
765
766 if (rule_numbers)
767 printf("@%u ", r->nr);
768
769 printf("ether ");
770 if (anchor_call[0]) {
771 if (anchor_call[0] == '_') {
772 printf("anchor");
773 } else
774 printf("anchor \"%s\"", anchor_call);
775 } else {
776 printf("%s", actiontypes[r->action]);
777 }
778 if (r->direction == PF_IN)
779 printf(" in");
780 else if (r->direction == PF_OUT)
781 printf(" out");
782
783 if (r->quick)
784 printf(" quick");
785 if (r->ifname[0]) {
786 if (r->ifnot)
787 printf(" on ! %s", r->ifname);
788 else
789 printf(" on %s", r->ifname);
790 }
791 if (r->bridge_to[0])
792 printf(" bridge-to %s", r->bridge_to);
793 if (r->proto)
794 printf(" proto 0x%04x", r->proto);
795
796 if (r->src.isset) {
797 printf(" from ");
798 print_eth_addr(&r->src);
799 }
800 if (r->dst.isset) {
801 printf(" to ");
802 print_eth_addr(&r->dst);
803 }
804 printf(" l3");
805 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst,
806 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0,
807 0, 0);
808
809 i = 0;
810 while (r->label[i][0])
811 printf(" label \"%s\"", r->label[i++]);
812 if (r->ridentifier)
813 printf(" ridentifier %u", r->ridentifier);
814
815 if (r->qname[0])
816 printf(" queue %s", r->qname);
817 if (r->tagname[0])
818 printf(" tag %s", r->tagname);
819 if (r->match_tagname[0]) {
820 if (r->match_tag_not)
821 printf(" !");
822 printf(" tagged %s", r->match_tagname);
823 }
824 if (r->dnpipe)
825 printf(" %s %d",
826 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
827 r->dnpipe);
828 }
829
830 void
print_rule(struct pfctl_rule * r,const char * anchor_call,int verbose,int numeric)831 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric)
832 {
833 static const char *actiontypes[] = { "pass", "block", "scrub",
834 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr",
835 "", "", "match"};
836 static const char *anchortypes[] = { "anchor", "anchor", "anchor",
837 "anchor", "nat-anchor", "nat-anchor", "binat-anchor",
838 "binat-anchor", "rdr-anchor", "rdr-anchor" };
839 int i, opts;
840 char *p;
841
842 if (verbose)
843 printf("@%d ", r->nr);
844 if (r->action == PF_MATCH)
845 printf("match");
846 else if (r->action > PF_NORDR)
847 printf("action(%d)", r->action);
848 else if (anchor_call[0]) {
849 p = strrchr(anchor_call, '/');
850 if (p ? p[1] == '_' : anchor_call[0] == '_')
851 printf("%s", anchortypes[r->action]);
852 else
853 printf("%s \"%s\"", anchortypes[r->action],
854 anchor_call);
855 } else {
856 printf("%s", actiontypes[r->action]);
857 if (r->natpass)
858 printf(" pass");
859 }
860 if (r->action == PF_DROP) {
861 if (r->rule_flag & PFRULE_RETURN)
862 printf(" return");
863 else if (r->rule_flag & PFRULE_RETURNRST) {
864 if (!r->return_ttl)
865 printf(" return-rst");
866 else
867 printf(" return-rst(ttl %d)", r->return_ttl);
868 } else if (r->rule_flag & PFRULE_RETURNICMP) {
869 const struct icmpcodeent *ic, *ic6;
870
871 ic = geticmpcodebynumber(r->return_icmp >> 8,
872 r->return_icmp & 255, AF_INET);
873 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
874 r->return_icmp6 & 255, AF_INET6);
875
876 switch (r->af) {
877 case AF_INET:
878 printf(" return-icmp");
879 if (ic == NULL)
880 printf("(%u)", r->return_icmp & 255);
881 else
882 printf("(%s)", ic->name);
883 break;
884 case AF_INET6:
885 printf(" return-icmp6");
886 if (ic6 == NULL)
887 printf("(%u)", r->return_icmp6 & 255);
888 else
889 printf("(%s)", ic6->name);
890 break;
891 default:
892 printf(" return-icmp");
893 if (ic == NULL)
894 printf("(%u, ", r->return_icmp & 255);
895 else
896 printf("(%s, ", ic->name);
897 if (ic6 == NULL)
898 printf("%u)", r->return_icmp6 & 255);
899 else
900 printf("%s)", ic6->name);
901 break;
902 }
903 } else
904 printf(" drop");
905 }
906 if (r->direction == PF_IN)
907 printf(" in");
908 else if (r->direction == PF_OUT)
909 printf(" out");
910 if (r->log) {
911 printf(" log");
912 if (r->log & ~PF_LOG || r->logif) {
913 int count = 0;
914
915 printf(" (");
916 if (r->log & PF_LOG_ALL)
917 printf("%sall", count++ ? ", " : "");
918 if (r->log & PF_LOG_MATCHES)
919 printf("%smatches", count++ ? ", " : "");
920 if (r->log & PF_LOG_SOCKET_LOOKUP)
921 printf("%suser", count++ ? ", " : "");
922 if (r->logif)
923 printf("%sto pflog%u", count++ ? ", " : "",
924 r->logif);
925 printf(")");
926 }
927 }
928 if (r->quick)
929 printf(" quick");
930 if (r->ifname[0]) {
931 if (r->ifnot)
932 printf(" on ! %s", r->ifname);
933 else
934 printf(" on %s", r->ifname);
935 }
936 if (r->rt) {
937 if (r->rt == PF_ROUTETO)
938 printf(" route-to");
939 else if (r->rt == PF_REPLYTO)
940 printf(" reply-to");
941 else if (r->rt == PF_DUPTO)
942 printf(" dup-to");
943 printf(" ");
944 print_pool(&r->rpool, 0, 0, r->af, PF_PASS);
945 }
946 if (r->af) {
947 if (r->af == AF_INET)
948 printf(" inet");
949 else
950 printf(" inet6");
951 }
952 if (r->proto) {
953 const char *protoname;
954
955 if ((protoname = pfctl_proto2name(r->proto)) != NULL)
956 printf(" proto %s", protoname);
957 else
958 printf(" proto %u", r->proto);
959 }
960 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto,
961 verbose, numeric);
962 if (r->rcv_ifname[0])
963 printf(" received-on %s", r->rcv_ifname);
964 if (r->uid.op)
965 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user",
966 UID_MAX);
967 if (r->gid.op)
968 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group",
969 GID_MAX);
970 if (r->flags || r->flagset) {
971 printf(" flags ");
972 print_flags(r->flags);
973 printf("/");
974 print_flags(r->flagset);
975 } else if ((r->action == PF_PASS || r->action == PF_MATCH) &&
976 (!r->proto || r->proto == IPPROTO_TCP) &&
977 !(r->rule_flag & PFRULE_FRAGMENT) &&
978 !anchor_call[0] && r->keep_state)
979 printf(" flags any");
980 if (r->type) {
981 const struct icmptypeent *it;
982
983 it = geticmptypebynumber(r->type-1, r->af);
984 if (r->af != AF_INET6)
985 printf(" icmp-type");
986 else
987 printf(" icmp6-type");
988 if (it != NULL)
989 printf(" %s", it->name);
990 else
991 printf(" %u", r->type-1);
992 if (r->code) {
993 const struct icmpcodeent *ic;
994
995 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
996 if (ic != NULL)
997 printf(" code %s", ic->name);
998 else
999 printf(" code %u", r->code-1);
1000 }
1001 }
1002 if (r->tos)
1003 printf(" tos 0x%2.2x", r->tos);
1004 if (r->prio)
1005 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio);
1006 if (r->scrub_flags & PFSTATE_SETMASK) {
1007 char *comma = "";
1008 printf(" set (");
1009 if (r->scrub_flags & PFSTATE_SETPRIO) {
1010 if (r->set_prio[0] == r->set_prio[1])
1011 printf("%s prio %u", comma, r->set_prio[0]);
1012 else
1013 printf("%s prio(%u, %u)", comma, r->set_prio[0],
1014 r->set_prio[1]);
1015 comma = ",";
1016 }
1017 if (r->scrub_flags & PFSTATE_SETTOS) {
1018 printf("%s tos 0x%2.2x", comma, r->set_tos);
1019 comma = ",";
1020 }
1021 printf(" )");
1022 }
1023 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0])
1024 printf(" no state");
1025 else if (r->keep_state == PF_STATE_NORMAL)
1026 printf(" keep state");
1027 else if (r->keep_state == PF_STATE_MODULATE)
1028 printf(" modulate state");
1029 else if (r->keep_state == PF_STATE_SYNPROXY)
1030 printf(" synproxy state");
1031 if (r->prob) {
1032 char buf[20];
1033
1034 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
1035 for (i = strlen(buf)-1; i > 0; i--) {
1036 if (buf[i] == '0')
1037 buf[i] = '\0';
1038 else {
1039 if (buf[i] == '.')
1040 buf[i] = '\0';
1041 break;
1042 }
1043 }
1044 printf(" probability %s%%", buf);
1045 }
1046 opts = 0;
1047 if (r->max_states || r->max_src_nodes || r->max_src_states)
1048 opts = 1;
1049 if (r->rule_flag & PFRULE_NOSYNC)
1050 opts = 1;
1051 if (r->rule_flag & PFRULE_SRCTRACK)
1052 opts = 1;
1053 if (r->rule_flag & PFRULE_IFBOUND)
1054 opts = 1;
1055 if (r->rule_flag & PFRULE_STATESLOPPY)
1056 opts = 1;
1057 if (r->rule_flag & PFRULE_PFLOW)
1058 opts = 1;
1059 for (i = 0; !opts && i < PFTM_MAX; ++i)
1060 if (r->timeout[i])
1061 opts = 1;
1062 if (opts) {
1063 printf(" (");
1064 if (r->max_states) {
1065 printf("max %u", r->max_states);
1066 opts = 0;
1067 }
1068 if (r->rule_flag & PFRULE_NOSYNC) {
1069 if (!opts)
1070 printf(", ");
1071 printf("no-sync");
1072 opts = 0;
1073 }
1074 if (r->rule_flag & PFRULE_SRCTRACK) {
1075 if (!opts)
1076 printf(", ");
1077 printf("source-track");
1078 if (r->rule_flag & PFRULE_RULESRCTRACK)
1079 printf(" rule");
1080 else
1081 printf(" global");
1082 opts = 0;
1083 }
1084 if (r->max_src_states) {
1085 if (!opts)
1086 printf(", ");
1087 printf("max-src-states %u", r->max_src_states);
1088 opts = 0;
1089 }
1090 if (r->max_src_conn) {
1091 if (!opts)
1092 printf(", ");
1093 printf("max-src-conn %u", r->max_src_conn);
1094 opts = 0;
1095 }
1096 if (r->max_src_conn_rate.limit) {
1097 if (!opts)
1098 printf(", ");
1099 printf("max-src-conn-rate %u/%u",
1100 r->max_src_conn_rate.limit,
1101 r->max_src_conn_rate.seconds);
1102 opts = 0;
1103 }
1104 if (r->max_src_nodes) {
1105 if (!opts)
1106 printf(", ");
1107 printf("max-src-nodes %u", r->max_src_nodes);
1108 opts = 0;
1109 }
1110 if (r->overload_tblname[0]) {
1111 if (!opts)
1112 printf(", ");
1113 printf("overload <%s>", r->overload_tblname);
1114 if (r->flush)
1115 printf(" flush");
1116 if (r->flush & PF_FLUSH_GLOBAL)
1117 printf(" global");
1118 }
1119 if (r->rule_flag & PFRULE_IFBOUND) {
1120 if (!opts)
1121 printf(", ");
1122 printf("if-bound");
1123 opts = 0;
1124 }
1125 if (r->rule_flag & PFRULE_STATESLOPPY) {
1126 if (!opts)
1127 printf(", ");
1128 printf("sloppy");
1129 opts = 0;
1130 }
1131 if (r->rule_flag & PFRULE_PFLOW) {
1132 if (!opts)
1133 printf(", ");
1134 printf("pflow");
1135 opts = 0;
1136 }
1137 for (i = 0; i < PFTM_MAX; ++i)
1138 if (r->timeout[i]) {
1139 int j;
1140
1141 if (!opts)
1142 printf(", ");
1143 opts = 0;
1144 for (j = 0; pf_timeouts[j].name != NULL;
1145 ++j)
1146 if (pf_timeouts[j].timeout == i)
1147 break;
1148 printf("%s %u", pf_timeouts[j].name == NULL ?
1149 "inv.timeout" : pf_timeouts[j].name,
1150 r->timeout[i]);
1151 }
1152 printf(")");
1153 }
1154 if (r->allow_opts)
1155 printf(" allow-opts");
1156 if (r->rule_flag & PFRULE_FRAGMENT)
1157 printf(" fragment");
1158 if (r->action == PF_SCRUB) {
1159 /* Scrub flags for old-style scrub. */
1160 if (r->rule_flag & PFRULE_NODF)
1161 printf(" no-df");
1162 if (r->rule_flag & PFRULE_RANDOMID)
1163 printf(" random-id");
1164 if (r->min_ttl)
1165 printf(" min-ttl %d", r->min_ttl);
1166 if (r->max_mss)
1167 printf(" max-mss %d", r->max_mss);
1168 if (r->rule_flag & PFRULE_SET_TOS)
1169 printf(" set-tos 0x%2.2x", r->set_tos);
1170 if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
1171 printf(" reassemble tcp");
1172 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */
1173 printf(" fragment %sreassemble",
1174 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : "");
1175 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) {
1176 /* Scrub actions on normal rules. */
1177 printf(" scrub(");
1178 if (r->scrub_flags & PFSTATE_NODF)
1179 printf(" no-df");
1180 if (r->scrub_flags & PFSTATE_RANDOMID)
1181 printf(" random-id");
1182 if (r->min_ttl)
1183 printf(" min-ttl %d", r->min_ttl);
1184 if (r->scrub_flags & PFSTATE_SETTOS)
1185 printf(" set-tos 0x%2.2x", r->set_tos);
1186 if (r->scrub_flags & PFSTATE_SCRUB_TCP)
1187 printf(" reassemble tcp");
1188 if (r->max_mss)
1189 printf(" max-mss %d", r->max_mss);
1190 printf(")");
1191 }
1192 i = 0;
1193 while (r->label[i][0])
1194 printf(" label \"%s\"", r->label[i++]);
1195 if (r->ridentifier)
1196 printf(" ridentifier %u", r->ridentifier);
1197 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */
1198 if (r->dnrpipe)
1199 printf(" %s(%d, %d)",
1200 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1201 r->dnpipe, r->dnrpipe);
1202 else if (r->dnpipe)
1203 printf(" %s %d",
1204 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1205 r->dnpipe);
1206 if (r->qname[0] && r->pqname[0])
1207 printf(" queue(%s, %s)", r->qname, r->pqname);
1208 else if (r->qname[0])
1209 printf(" queue %s", r->qname);
1210 if (r->tagname[0])
1211 printf(" tag %s", r->tagname);
1212 if (r->match_tagname[0]) {
1213 if (r->match_tag_not)
1214 printf(" !");
1215 printf(" tagged %s", r->match_tagname);
1216 }
1217 if (r->rtableid != -1)
1218 printf(" rtable %u", r->rtableid);
1219 if (r->divert.port) {
1220 #ifdef __FreeBSD__
1221 printf(" divert-to %u", ntohs(r->divert.port));
1222 #else
1223 if (PF_AZERO(&r->divert.addr, r->af)) {
1224 printf(" divert-reply");
1225 } else {
1226 /* XXX cut&paste from print_addr */
1227 char buf[48];
1228
1229 printf(" divert-to ");
1230 if (inet_ntop(r->af, &r->divert.addr, buf,
1231 sizeof(buf)) == NULL)
1232 printf("?");
1233 else
1234 printf("%s", buf);
1235 printf(" port %u", ntohs(r->divert.port));
1236 }
1237 #endif
1238 }
1239 if (!anchor_call[0] && (r->action == PF_NAT ||
1240 r->action == PF_BINAT || r->action == PF_RDR)) {
1241 printf(" -> ");
1242 print_pool(&r->rpool, r->rpool.proxy_port[0],
1243 r->rpool.proxy_port[1], r->af, r->action);
1244 }
1245 }
1246
1247 void
print_tabledef(const char * name,int flags,int addrs,struct node_tinithead * nodes)1248 print_tabledef(const char *name, int flags, int addrs,
1249 struct node_tinithead *nodes)
1250 {
1251 struct node_tinit *ti, *nti;
1252 struct node_host *h;
1253
1254 printf("table <%s>", name);
1255 if (flags & PFR_TFLAG_CONST)
1256 printf(" const");
1257 if (flags & PFR_TFLAG_PERSIST)
1258 printf(" persist");
1259 if (flags & PFR_TFLAG_COUNTERS)
1260 printf(" counters");
1261 SIMPLEQ_FOREACH(ti, nodes, entries) {
1262 if (ti->file) {
1263 printf(" file \"%s\"", ti->file);
1264 continue;
1265 }
1266 printf(" {");
1267 for (;;) {
1268 for (h = ti->host; h != NULL; h = h->next) {
1269 printf(h->not ? " !" : " ");
1270 print_addr(&h->addr, h->af, 0);
1271 }
1272 nti = SIMPLEQ_NEXT(ti, entries);
1273 if (nti != NULL && nti->file == NULL)
1274 ti = nti; /* merge lists */
1275 else
1276 break;
1277 }
1278 printf(" }");
1279 }
1280 if (addrs && SIMPLEQ_EMPTY(nodes))
1281 printf(" { }");
1282 printf("\n");
1283 }
1284
1285 int
parse_flags(char * s)1286 parse_flags(char *s)
1287 {
1288 char *p, *q;
1289 u_int8_t f = 0;
1290
1291 for (p = s; *p; p++) {
1292 if ((q = strchr(tcpflags, *p)) == NULL)
1293 return -1;
1294 else
1295 f |= 1 << (q - tcpflags);
1296 }
1297 return (f ? f : PF_TH_ALL);
1298 }
1299
1300 void
set_ipmask(struct node_host * h,u_int8_t b)1301 set_ipmask(struct node_host *h, u_int8_t b)
1302 {
1303 struct pf_addr *m, *n;
1304 int i, j = 0;
1305
1306 m = &h->addr.v.a.mask;
1307 memset(m, 0, sizeof(*m));
1308
1309 while (b >= 32) {
1310 m->addr32[j++] = 0xffffffff;
1311 b -= 32;
1312 }
1313 for (i = 31; i > 31-b; --i)
1314 m->addr32[j] |= (1 << i);
1315 if (b)
1316 m->addr32[j] = htonl(m->addr32[j]);
1317
1318 /* Mask off bits of the address that will never be used. */
1319 n = &h->addr.v.a.addr;
1320 if (h->addr.type == PF_ADDR_ADDRMASK)
1321 for (i = 0; i < 4; i++)
1322 n->addr32[i] = n->addr32[i] & m->addr32[i];
1323 }
1324
1325 int
check_netmask(struct node_host * h,sa_family_t af)1326 check_netmask(struct node_host *h, sa_family_t af)
1327 {
1328 struct node_host *n = NULL;
1329 struct pf_addr *m;
1330
1331 for (n = h; n != NULL; n = n->next) {
1332 if (h->addr.type == PF_ADDR_TABLE)
1333 continue;
1334 m = &h->addr.v.a.mask;
1335 /* netmasks > 32 bit are invalid on v4 */
1336 if (af == AF_INET &&
1337 (m->addr32[1] || m->addr32[2] || m->addr32[3])) {
1338 fprintf(stderr, "netmask %u invalid for IPv4 address\n",
1339 unmask(m, AF_INET6));
1340 return (1);
1341 }
1342 }
1343 return (0);
1344 }
1345
1346 struct node_host *
gen_dynnode(struct node_host * h,sa_family_t af)1347 gen_dynnode(struct node_host *h, sa_family_t af)
1348 {
1349 struct node_host *n;
1350 struct pf_addr *m;
1351
1352 if (h->addr.type != PF_ADDR_DYNIFTL)
1353 return (NULL);
1354
1355 if ((n = calloc(1, sizeof(*n))) == NULL)
1356 return (NULL);
1357 bcopy(h, n, sizeof(*n));
1358 n->ifname = NULL;
1359 n->next = NULL;
1360 n->tail = NULL;
1361
1362 /* fix up netmask */
1363 m = &n->addr.v.a.mask;
1364 if (af == AF_INET && unmask(m, AF_INET6) > 32)
1365 set_ipmask(n, 32);
1366
1367 return (n);
1368 }
1369
1370 /* interface lookup routines */
1371
1372 static struct node_host *iftab;
1373
1374 /*
1375 * Retrieve the list of groups this interface is a member of and make sure
1376 * each group is in the group map.
1377 */
1378 static void
ifa_add_groups_to_map(char * ifa_name)1379 ifa_add_groups_to_map(char *ifa_name)
1380 {
1381 int s, len;
1382 struct ifgroupreq ifgr;
1383 struct ifg_req *ifg;
1384
1385 s = get_query_socket();
1386
1387 /* Get size of group list for this interface */
1388 memset(&ifgr, 0, sizeof(ifgr));
1389 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ);
1390 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1391 err(1, "SIOCGIFGROUP");
1392
1393 /* Retrieve group list for this interface */
1394 len = ifgr.ifgr_len;
1395 ifgr.ifgr_groups =
1396 (struct ifg_req *)calloc(len / sizeof(struct ifg_req),
1397 sizeof(struct ifg_req));
1398 if (ifgr.ifgr_groups == NULL)
1399 err(1, "calloc");
1400 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1401 err(1, "SIOCGIFGROUP");
1402
1403 ifg = ifgr.ifgr_groups;
1404 for (; ifg && len >= sizeof(struct ifg_req); ifg++) {
1405 len -= sizeof(struct ifg_req);
1406 if (strcmp(ifg->ifgrq_group, "all")) {
1407 ENTRY item;
1408 ENTRY *ret_item;
1409 int *answer;
1410
1411 item.key = ifg->ifgrq_group;
1412 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) {
1413 struct ifgroupreq ifgr2;
1414
1415 /* Don't know the answer yet */
1416 if ((answer = malloc(sizeof(int))) == NULL)
1417 err(1, "malloc");
1418
1419 bzero(&ifgr2, sizeof(ifgr2));
1420 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group,
1421 sizeof(ifgr2.ifgr_name));
1422 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0)
1423 *answer = ifgr2.ifgr_len;
1424 else
1425 *answer = 0;
1426
1427 item.key = strdup(ifg->ifgrq_group);
1428 item.data = answer;
1429 if (hsearch_r(item, ENTER, &ret_item,
1430 &isgroup_map) == 0)
1431 err(1, "interface group query response"
1432 " map insert");
1433 }
1434 }
1435 }
1436 free(ifgr.ifgr_groups);
1437 }
1438
1439 void
ifa_load(void)1440 ifa_load(void)
1441 {
1442 struct ifaddrs *ifap, *ifa;
1443 struct node_host *n = NULL, *h = NULL;
1444
1445 if (getifaddrs(&ifap) < 0)
1446 err(1, "getifaddrs");
1447
1448 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1449 if (!(ifa->ifa_addr->sa_family == AF_INET ||
1450 ifa->ifa_addr->sa_family == AF_INET6 ||
1451 ifa->ifa_addr->sa_family == AF_LINK))
1452 continue;
1453 n = calloc(1, sizeof(struct node_host));
1454 if (n == NULL)
1455 err(1, "address: calloc");
1456 n->af = ifa->ifa_addr->sa_family;
1457 n->ifa_flags = ifa->ifa_flags;
1458 #ifdef __KAME__
1459 if (n->af == AF_INET6 &&
1460 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
1461 ifa->ifa_addr)->sin6_addr) &&
1462 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
1463 0) {
1464 struct sockaddr_in6 *sin6;
1465
1466 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1467 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
1468 sin6->sin6_addr.s6_addr[3];
1469 sin6->sin6_addr.s6_addr[2] = 0;
1470 sin6->sin6_addr.s6_addr[3] = 0;
1471 }
1472 #endif
1473 n->ifindex = 0;
1474 if (n->af == AF_INET) {
1475 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *)
1476 ifa->ifa_addr)->sin_addr.s_addr,
1477 sizeof(struct in_addr));
1478 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *)
1479 ifa->ifa_netmask)->sin_addr.s_addr,
1480 sizeof(struct in_addr));
1481 if (ifa->ifa_broadaddr != NULL)
1482 memcpy(&n->bcast, &((struct sockaddr_in *)
1483 ifa->ifa_broadaddr)->sin_addr.s_addr,
1484 sizeof(struct in_addr));
1485 if (ifa->ifa_dstaddr != NULL)
1486 memcpy(&n->peer, &((struct sockaddr_in *)
1487 ifa->ifa_dstaddr)->sin_addr.s_addr,
1488 sizeof(struct in_addr));
1489 } else if (n->af == AF_INET6) {
1490 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *)
1491 ifa->ifa_addr)->sin6_addr.s6_addr,
1492 sizeof(struct in6_addr));
1493 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *)
1494 ifa->ifa_netmask)->sin6_addr.s6_addr,
1495 sizeof(struct in6_addr));
1496 if (ifa->ifa_broadaddr != NULL)
1497 memcpy(&n->bcast, &((struct sockaddr_in6 *)
1498 ifa->ifa_broadaddr)->sin6_addr.s6_addr,
1499 sizeof(struct in6_addr));
1500 if (ifa->ifa_dstaddr != NULL)
1501 memcpy(&n->peer, &((struct sockaddr_in6 *)
1502 ifa->ifa_dstaddr)->sin6_addr.s6_addr,
1503 sizeof(struct in6_addr));
1504 n->ifindex = ((struct sockaddr_in6 *)
1505 ifa->ifa_addr)->sin6_scope_id;
1506 } else if (n->af == AF_LINK) {
1507 ifa_add_groups_to_map(ifa->ifa_name);
1508 }
1509 if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
1510 err(1, "ifa_load: strdup");
1511 n->next = NULL;
1512 n->tail = n;
1513 if (h == NULL)
1514 h = n;
1515 else {
1516 h->tail->next = n;
1517 h->tail = n;
1518 }
1519 }
1520
1521 iftab = h;
1522 freeifaddrs(ifap);
1523 }
1524
1525 static int
get_socket_domain(void)1526 get_socket_domain(void)
1527 {
1528 int sdom;
1529
1530 sdom = AF_UNSPEC;
1531 #ifdef WITH_INET6
1532 if (sdom == AF_UNSPEC && feature_present("inet6"))
1533 sdom = AF_INET6;
1534 #endif
1535 #ifdef WITH_INET
1536 if (sdom == AF_UNSPEC && feature_present("inet"))
1537 sdom = AF_INET;
1538 #endif
1539 if (sdom == AF_UNSPEC)
1540 sdom = AF_LINK;
1541
1542 return (sdom);
1543 }
1544
1545 int
get_query_socket(void)1546 get_query_socket(void)
1547 {
1548 static int s = -1;
1549
1550 if (s == -1) {
1551 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1)
1552 err(1, "socket");
1553 }
1554
1555 return (s);
1556 }
1557
1558 /*
1559 * Returns the response len if the name is a group, otherwise returns 0.
1560 */
1561 static int
is_a_group(char * name)1562 is_a_group(char *name)
1563 {
1564 ENTRY item;
1565 ENTRY *ret_item;
1566
1567 item.key = name;
1568 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0)
1569 return (0);
1570
1571 return (*(int *)ret_item->data);
1572 }
1573
1574 struct node_host *
ifa_exists(char * ifa_name)1575 ifa_exists(char *ifa_name)
1576 {
1577 struct node_host *n;
1578
1579 if (iftab == NULL)
1580 ifa_load();
1581
1582 /* check whether this is a group */
1583 if (is_a_group(ifa_name)) {
1584 /* fake a node_host */
1585 if ((n = calloc(1, sizeof(*n))) == NULL)
1586 err(1, "calloc");
1587 if ((n->ifname = strdup(ifa_name)) == NULL)
1588 err(1, "strdup");
1589 return (n);
1590 }
1591
1592 for (n = iftab; n; n = n->next) {
1593 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
1594 return (n);
1595 }
1596
1597 return (NULL);
1598 }
1599
1600 struct node_host *
ifa_grouplookup(char * ifa_name,int flags)1601 ifa_grouplookup(char *ifa_name, int flags)
1602 {
1603 struct ifg_req *ifg;
1604 struct ifgroupreq ifgr;
1605 int s, len;
1606 struct node_host *n, *h = NULL;
1607
1608 s = get_query_socket();
1609 len = is_a_group(ifa_name);
1610 if (len == 0)
1611 return (NULL);
1612 bzero(&ifgr, sizeof(ifgr));
1613 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
1614 ifgr.ifgr_len = len;
1615 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
1616 err(1, "calloc");
1617 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
1618 err(1, "SIOCGIFGMEMB");
1619
1620 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req);
1621 ifg++) {
1622 len -= sizeof(struct ifg_req);
1623 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL)
1624 continue;
1625 if (h == NULL)
1626 h = n;
1627 else {
1628 h->tail->next = n;
1629 h->tail = n->tail;
1630 }
1631 }
1632 free(ifgr.ifgr_groups);
1633
1634 return (h);
1635 }
1636
1637 struct node_host *
ifa_lookup(char * ifa_name,int flags)1638 ifa_lookup(char *ifa_name, int flags)
1639 {
1640 struct node_host *p = NULL, *h = NULL, *n = NULL;
1641 int got4 = 0, got6 = 0;
1642 const char *last_if = NULL;
1643
1644 /* first load iftab and isgroup_map */
1645 if (iftab == NULL)
1646 ifa_load();
1647
1648 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL)
1649 return (h);
1650
1651 if (!strncmp(ifa_name, "self", IFNAMSIZ))
1652 ifa_name = NULL;
1653
1654 for (p = iftab; p; p = p->next) {
1655 if (ifa_skip_if(ifa_name, p))
1656 continue;
1657 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
1658 continue;
1659 if ((flags & PFI_AFLAG_BROADCAST) &&
1660 !(p->ifa_flags & IFF_BROADCAST))
1661 continue;
1662 if ((flags & PFI_AFLAG_PEER) &&
1663 !(p->ifa_flags & IFF_POINTOPOINT))
1664 continue;
1665 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
1666 continue;
1667 if (last_if == NULL || strcmp(last_if, p->ifname))
1668 got4 = got6 = 0;
1669 last_if = p->ifname;
1670 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
1671 continue;
1672 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 &&
1673 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6))
1674 continue;
1675 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
1676 continue;
1677 if (p->af == AF_INET)
1678 got4 = 1;
1679 else
1680 got6 = 1;
1681 n = calloc(1, sizeof(struct node_host));
1682 if (n == NULL)
1683 err(1, "address: calloc");
1684 n->af = p->af;
1685 if (flags & PFI_AFLAG_BROADCAST)
1686 memcpy(&n->addr.v.a.addr, &p->bcast,
1687 sizeof(struct pf_addr));
1688 else if (flags & PFI_AFLAG_PEER)
1689 memcpy(&n->addr.v.a.addr, &p->peer,
1690 sizeof(struct pf_addr));
1691 else
1692 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
1693 sizeof(struct pf_addr));
1694 if (flags & PFI_AFLAG_NETWORK)
1695 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af));
1696 else {
1697 if (n->af == AF_INET) {
1698 if (p->ifa_flags & IFF_LOOPBACK &&
1699 p->ifa_flags & IFF_LINK1)
1700 memcpy(&n->addr.v.a.mask,
1701 &p->addr.v.a.mask,
1702 sizeof(struct pf_addr));
1703 else
1704 set_ipmask(n, 32);
1705 } else
1706 set_ipmask(n, 128);
1707 }
1708 n->ifindex = p->ifindex;
1709 n->ifname = strdup(p->ifname);
1710
1711 n->next = NULL;
1712 n->tail = n;
1713 if (h == NULL)
1714 h = n;
1715 else {
1716 h->tail->next = n;
1717 h->tail = n;
1718 }
1719 }
1720 return (h);
1721 }
1722
1723 int
ifa_skip_if(const char * filter,struct node_host * p)1724 ifa_skip_if(const char *filter, struct node_host *p)
1725 {
1726 int n;
1727
1728 if (p->af != AF_INET && p->af != AF_INET6)
1729 return (1);
1730 if (filter == NULL || !*filter)
1731 return (0);
1732 if (!strcmp(p->ifname, filter))
1733 return (0); /* exact match */
1734 n = strlen(filter);
1735 if (n < 1 || n >= IFNAMSIZ)
1736 return (1); /* sanity check */
1737 if (filter[n-1] >= '0' && filter[n-1] <= '9')
1738 return (1); /* only do exact match in that case */
1739 if (strncmp(p->ifname, filter, n))
1740 return (1); /* prefix doesn't match */
1741 return (p->ifname[n] < '0' || p->ifname[n] > '9');
1742 }
1743
1744
1745 struct node_host *
host(const char * s)1746 host(const char *s)
1747 {
1748 struct node_host *h = NULL;
1749 int mask, v4mask, v6mask, cont = 1;
1750 char *p, *q, *ps;
1751
1752 if ((p = strrchr(s, '/')) != NULL) {
1753 mask = strtol(p+1, &q, 0);
1754 if (!q || *q || mask > 128 || q == (p+1)) {
1755 fprintf(stderr, "invalid netmask '%s'\n", p);
1756 return (NULL);
1757 }
1758 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
1759 err(1, "host: malloc");
1760 strlcpy(ps, s, strlen(s) - strlen(p) + 1);
1761 v4mask = v6mask = mask;
1762 } else {
1763 if ((ps = strdup(s)) == NULL)
1764 err(1, "host: strdup");
1765 v4mask = 32;
1766 v6mask = 128;
1767 mask = -1;
1768 }
1769
1770 /* IPv4 address? */
1771 if (cont && (h = host_v4(s, mask)) != NULL)
1772 cont = 0;
1773
1774 /* IPv6 address? */
1775 if (cont && (h = host_v6(ps, v6mask)) != NULL)
1776 cont = 0;
1777
1778 /* interface with this name exists? */
1779 /* expensive with thousands of interfaces - prioritze IPv4/6 check */
1780 if (cont && (h = host_if(ps, mask, &cont)) != NULL)
1781 cont = 0;
1782
1783 /* dns lookup */
1784 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL)
1785 cont = 0;
1786 free(ps);
1787
1788 if (h == NULL || cont == 1) {
1789 fprintf(stderr, "no IP address found for %s\n", s);
1790 return (NULL);
1791 }
1792 return (h);
1793 }
1794
1795 struct node_host *
host_if(const char * s,int mask,int * cont)1796 host_if(const char *s, int mask, int *cont)
1797 {
1798 struct node_host *n, *h = NULL;
1799 char *p, *ps;
1800 int flags = 0;
1801
1802 if ((ps = strdup(s)) == NULL)
1803 err(1, "host_if: strdup");
1804 while ((p = strrchr(ps, ':')) != NULL) {
1805 if (!strcmp(p+1, "network"))
1806 flags |= PFI_AFLAG_NETWORK;
1807 else if (!strcmp(p+1, "broadcast"))
1808 flags |= PFI_AFLAG_BROADCAST;
1809 else if (!strcmp(p+1, "peer"))
1810 flags |= PFI_AFLAG_PEER;
1811 else if (!strcmp(p+1, "0"))
1812 flags |= PFI_AFLAG_NOALIAS;
1813 else {
1814 free(ps);
1815 return (NULL);
1816 }
1817 *p = '\0';
1818 *cont = 0;
1819 }
1820 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
1821 fprintf(stderr, "illegal combination of interface modifiers\n");
1822 free(ps);
1823 return (NULL);
1824 }
1825 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
1826 fprintf(stderr, "network or broadcast lookup, but "
1827 "extra netmask given\n");
1828 free(ps);
1829 return (NULL);
1830 }
1831 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) {
1832 /* interface with this name exists */
1833 h = ifa_lookup(ps, flags);
1834 for (n = h; n != NULL && mask > -1; n = n->next)
1835 set_ipmask(n, mask);
1836 }
1837
1838 free(ps);
1839 return (h);
1840 }
1841
1842 struct node_host *
host_v4(const char * s,int mask)1843 host_v4(const char *s, int mask)
1844 {
1845 struct node_host *h = NULL;
1846 struct in_addr ina;
1847 int bits = 32;
1848
1849 memset(&ina, 0, sizeof(struct in_addr));
1850 if (strrchr(s, '/') != NULL) {
1851 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1)
1852 return (NULL);
1853 } else {
1854 if (inet_pton(AF_INET, s, &ina) != 1)
1855 return (NULL);
1856 }
1857
1858 h = calloc(1, sizeof(struct node_host));
1859 if (h == NULL)
1860 err(1, "address: calloc");
1861 h->ifname = NULL;
1862 h->af = AF_INET;
1863 h->addr.v.a.addr.addr32[0] = ina.s_addr;
1864 set_ipmask(h, bits);
1865 h->next = NULL;
1866 h->tail = h;
1867
1868 return (h);
1869 }
1870
1871 struct node_host *
host_v6(const char * s,int mask)1872 host_v6(const char *s, int mask)
1873 {
1874 struct addrinfo hints, *res;
1875 struct node_host *h = NULL;
1876
1877 memset(&hints, 0, sizeof(hints));
1878 hints.ai_family = AF_INET6;
1879 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1880 hints.ai_flags = AI_NUMERICHOST;
1881 if (getaddrinfo(s, "0", &hints, &res) == 0) {
1882 h = calloc(1, sizeof(struct node_host));
1883 if (h == NULL)
1884 err(1, "address: calloc");
1885 h->ifname = NULL;
1886 h->af = AF_INET6;
1887 memcpy(&h->addr.v.a.addr,
1888 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
1889 sizeof(h->addr.v.a.addr));
1890 h->ifindex =
1891 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1892 set_ipmask(h, mask);
1893 freeaddrinfo(res);
1894 h->next = NULL;
1895 h->tail = h;
1896 }
1897
1898 return (h);
1899 }
1900
1901 struct node_host *
host_dns(const char * s,int v4mask,int v6mask)1902 host_dns(const char *s, int v4mask, int v6mask)
1903 {
1904 struct addrinfo hints, *res0, *res;
1905 struct node_host *n, *h = NULL;
1906 int error, noalias = 0;
1907 int got4 = 0, got6 = 0;
1908 char *p, *ps;
1909
1910 if ((ps = strdup(s)) == NULL)
1911 err(1, "host_dns: strdup");
1912 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
1913 noalias = 1;
1914 *p = '\0';
1915 }
1916 memset(&hints, 0, sizeof(hints));
1917 hints.ai_family = PF_UNSPEC;
1918 hints.ai_socktype = SOCK_STREAM; /* DUMMY */
1919 error = getaddrinfo(ps, NULL, &hints, &res0);
1920 if (error) {
1921 free(ps);
1922 return (h);
1923 }
1924
1925 for (res = res0; res; res = res->ai_next) {
1926 if (res->ai_family != AF_INET &&
1927 res->ai_family != AF_INET6)
1928 continue;
1929 if (noalias) {
1930 if (res->ai_family == AF_INET) {
1931 if (got4)
1932 continue;
1933 got4 = 1;
1934 } else {
1935 if (got6)
1936 continue;
1937 got6 = 1;
1938 }
1939 }
1940 n = calloc(1, sizeof(struct node_host));
1941 if (n == NULL)
1942 err(1, "host_dns: calloc");
1943 n->ifname = NULL;
1944 n->af = res->ai_family;
1945 if (res->ai_family == AF_INET) {
1946 memcpy(&n->addr.v.a.addr,
1947 &((struct sockaddr_in *)
1948 res->ai_addr)->sin_addr.s_addr,
1949 sizeof(struct in_addr));
1950 set_ipmask(n, v4mask);
1951 } else {
1952 memcpy(&n->addr.v.a.addr,
1953 &((struct sockaddr_in6 *)
1954 res->ai_addr)->sin6_addr.s6_addr,
1955 sizeof(struct in6_addr));
1956 n->ifindex =
1957 ((struct sockaddr_in6 *)
1958 res->ai_addr)->sin6_scope_id;
1959 set_ipmask(n, v6mask);
1960 }
1961 n->next = NULL;
1962 n->tail = n;
1963 if (h == NULL)
1964 h = n;
1965 else {
1966 h->tail->next = n;
1967 h->tail = n;
1968 }
1969 }
1970 freeaddrinfo(res0);
1971 free(ps);
1972
1973 return (h);
1974 }
1975
1976 /*
1977 * convert a hostname to a list of addresses and put them in the given buffer.
1978 * test:
1979 * if set to 1, only simple addresses are accepted (no netblock, no "!").
1980 */
1981 int
append_addr(struct pfr_buffer * b,char * s,int test)1982 append_addr(struct pfr_buffer *b, char *s, int test)
1983 {
1984 char *r;
1985 struct node_host *h, *n;
1986 int rv, not = 0;
1987
1988 for (r = s; *r == '!'; r++)
1989 not = !not;
1990 if ((n = host(r)) == NULL) {
1991 errno = 0;
1992 return (-1);
1993 }
1994 rv = append_addr_host(b, n, test, not);
1995 do {
1996 h = n;
1997 n = n->next;
1998 free(h);
1999 } while (n != NULL);
2000 return (rv);
2001 }
2002
2003 /*
2004 * same as previous function, but with a pre-parsed input and the ability
2005 * to "negate" the result. Does not free the node_host list.
2006 * not:
2007 * setting it to 1 is equivalent to adding "!" in front of parameter s.
2008 */
2009 int
append_addr_host(struct pfr_buffer * b,struct node_host * n,int test,int not)2010 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
2011 {
2012 int bits;
2013 struct pfr_addr addr;
2014
2015 do {
2016 bzero(&addr, sizeof(addr));
2017 addr.pfra_not = n->not ^ not;
2018 addr.pfra_af = n->af;
2019 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af);
2020 switch (n->af) {
2021 case AF_INET:
2022 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
2023 bits = 32;
2024 break;
2025 case AF_INET6:
2026 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
2027 sizeof(struct in6_addr));
2028 bits = 128;
2029 break;
2030 default:
2031 errno = EINVAL;
2032 return (-1);
2033 }
2034 if ((test && (not || addr.pfra_net != bits)) ||
2035 addr.pfra_net > bits) {
2036 errno = EINVAL;
2037 return (-1);
2038 }
2039 if (pfr_buf_add(b, &addr))
2040 return (-1);
2041 } while ((n = n->next) != NULL);
2042
2043 return (0);
2044 }
2045
2046 int
pfctl_add_trans(struct pfr_buffer * buf,int rs_num,const char * anchor)2047 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor)
2048 {
2049 struct pfioc_trans_e trans;
2050
2051 bzero(&trans, sizeof(trans));
2052 trans.rs_num = rs_num;
2053 if (strlcpy(trans.anchor, anchor,
2054 sizeof(trans.anchor)) >= sizeof(trans.anchor))
2055 errx(1, "pfctl_add_trans: strlcpy");
2056
2057 return pfr_buf_add(buf, &trans);
2058 }
2059
2060 u_int32_t
pfctl_get_ticket(struct pfr_buffer * buf,int rs_num,const char * anchor)2061 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor)
2062 {
2063 struct pfioc_trans_e *p;
2064
2065 PFRB_FOREACH(p, buf)
2066 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor))
2067 return (p->ticket);
2068 errx(1, "pfctl_get_ticket: assertion failed");
2069 }
2070
2071 int
pfctl_trans(int dev,struct pfr_buffer * buf,u_long cmd,int from)2072 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
2073 {
2074 struct pfioc_trans trans;
2075
2076 bzero(&trans, sizeof(trans));
2077 trans.size = buf->pfrb_size - from;
2078 trans.esize = sizeof(struct pfioc_trans_e);
2079 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
2080 return ioctl(dev, cmd, &trans);
2081 }
2082