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 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES;
503 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES;
504 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES;
505 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES;
506
507 void
print_status(struct pfctl_status * s,struct pfctl_syncookies * cookies,int opts)508 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts)
509 {
510 struct pfctl_status_counter *c;
511 char statline[80], *running;
512 time_t runtime;
513 int i;
514 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1];
515 static const char hex[] = "0123456789abcdef";
516
517 runtime = time(NULL) - s->since;
518 running = s->running ? "Enabled" : "Disabled";
519
520 if (s->since) {
521 unsigned int sec, min, hrs, day = runtime;
522
523 sec = day % 60;
524 day /= 60;
525 min = day % 60;
526 day /= 60;
527 hrs = day % 24;
528 day /= 24;
529 snprintf(statline, sizeof(statline),
530 "Status: %s for %u days %.2u:%.2u:%.2u",
531 running, day, hrs, min, sec);
532 } else
533 snprintf(statline, sizeof(statline), "Status: %s", running);
534 printf("%-44s", statline);
535 switch (s->debug) {
536 case PF_DEBUG_NONE:
537 printf("%15s\n\n", "Debug: None");
538 break;
539 case PF_DEBUG_URGENT:
540 printf("%15s\n\n", "Debug: Urgent");
541 break;
542 case PF_DEBUG_MISC:
543 printf("%15s\n\n", "Debug: Misc");
544 break;
545 case PF_DEBUG_NOISY:
546 printf("%15s\n\n", "Debug: Loud");
547 break;
548 }
549
550 if (opts & PF_OPT_VERBOSE) {
551 printf("Hostid: 0x%08x\n", s->hostid);
552
553 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) {
554 buf[i + i] = hex[s->pf_chksum[i] >> 4];
555 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f];
556 }
557 buf[i + i] = '\0';
558 printf("Checksum: 0x%s\n\n", buf);
559 }
560
561 if (s->ifname[0] != 0) {
562 printf("Interface Stats for %-16s %5s %16s\n",
563 s->ifname, "IPv4", "IPv6");
564 printf(" %-25s %14llu %16llu\n", "Bytes In",
565 (unsigned long long)s->bcounters[0][0],
566 (unsigned long long)s->bcounters[1][0]);
567 printf(" %-25s %14llu %16llu\n", "Bytes Out",
568 (unsigned long long)s->bcounters[0][1],
569 (unsigned long long)s->bcounters[1][1]);
570 printf(" Packets In\n");
571 printf(" %-23s %14llu %16llu\n", "Passed",
572 (unsigned long long)s->pcounters[0][0][PF_PASS],
573 (unsigned long long)s->pcounters[1][0][PF_PASS]);
574 printf(" %-23s %14llu %16llu\n", "Blocked",
575 (unsigned long long)s->pcounters[0][0][PF_DROP],
576 (unsigned long long)s->pcounters[1][0][PF_DROP]);
577 printf(" Packets Out\n");
578 printf(" %-23s %14llu %16llu\n", "Passed",
579 (unsigned long long)s->pcounters[0][1][PF_PASS],
580 (unsigned long long)s->pcounters[1][1][PF_PASS]);
581 printf(" %-23s %14llu %16llu\n\n", "Blocked",
582 (unsigned long long)s->pcounters[0][1][PF_DROP],
583 (unsigned long long)s->pcounters[1][1][PF_DROP]);
584 }
585 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
586 printf(" %-25s %14ju %14s\n", "current entries", s->states, "");
587 TAILQ_FOREACH(c, &s->fcounters, entry) {
588 printf(" %-25s %14ju ", c->name, c->counter);
589 if (runtime > 0)
590 printf("%14.1f/s\n",
591 (double)c->counter / (double)runtime);
592 else
593 printf("%14s\n", "");
594 }
595 if (opts & PF_OPT_VERBOSE) {
596 printf("Source Tracking Table\n");
597 printf(" %-25s %14ju %14s\n", "current entries",
598 s->src_nodes, "");
599 TAILQ_FOREACH(c, &s->scounters, entry) {
600 printf(" %-25s %14ju ", c->name, c->counter);
601 if (runtime > 0)
602 printf("%14.1f/s\n",
603 (double)c->counter / (double)runtime);
604 else
605 printf("%14s\n", "");
606 }
607 }
608 printf("Counters\n");
609 TAILQ_FOREACH(c, &s->counters, entry) {
610 printf(" %-25s %14ju ", c->name, c->counter);
611 if (runtime > 0)
612 printf("%14.1f/s\n",
613 (double)c->counter / (double)runtime);
614 else
615 printf("%14s\n", "");
616 }
617 if (opts & PF_OPT_VERBOSE) {
618 printf("Limit Counters\n");
619 TAILQ_FOREACH(c, &s->lcounters, entry) {
620 printf(" %-25s %14ju ", c->name, c->counter);
621 if (runtime > 0)
622 printf("%14.1f/s\n",
623 (double)c->counter / (double)runtime);
624 else
625 printf("%14s\n", "");
626 }
627
628 printf("Syncookies\n");
629 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE);
630 printf(" %-25s %s\n", "mode",
631 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]);
632 printf(" %-25s %s\n", "active",
633 s->syncookies_active ? "active" : "inactive");
634 if (opts & PF_OPT_VERBOSE2) {
635 printf(" %-25s %d %%\n", "highwater", cookies->highwater);
636 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater);
637 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states);
638 }
639 printf("Reassemble %24s %s\n",
640 s->reass & PF_REASS_ENABLED ? "yes" : "no",
641 s->reass & PF_REASS_NODF ? "no-df" : ""
642 );
643 }
644 }
645
646 void
print_running(struct pfctl_status * status)647 print_running(struct pfctl_status *status)
648 {
649 printf("%s\n", status->running ? "Enabled" : "Disabled");
650 }
651
652 void
print_src_node(struct pfctl_src_node * sn,int opts)653 print_src_node(struct pfctl_src_node *sn, int opts)
654 {
655 struct pf_addr_wrap aw;
656 uint64_t min, sec;
657
658 memset(&aw, 0, sizeof(aw));
659 if (sn->af == AF_INET)
660 aw.v.a.mask.addr32[0] = 0xffffffff;
661 else
662 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
663
664 aw.v.a.addr = sn->addr;
665 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
666 printf(" -> ");
667 aw.v.a.addr = sn->raddr;
668 print_addr(&aw, sn->naf ? sn->naf : sn->af, opts & PF_OPT_VERBOSE2);
669 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states,
670 sn->conn, sn->conn_rate.count / 1000,
671 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds);
672 if (opts & PF_OPT_VERBOSE) {
673 sec = sn->creation % 60;
674 sn->creation /= 60;
675 min = sn->creation % 60;
676 sn->creation /= 60;
677 printf(" age %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64,
678 sn->creation, min, sec);
679 if (sn->states == 0) {
680 sec = sn->expire % 60;
681 sn->expire /= 60;
682 min = sn->expire % 60;
683 sn->expire /= 60;
684 printf(", expires in %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64,
685 sn->expire, min, sec);
686 }
687 printf(", %" PRIu64 " pkts, %" PRIu64 " bytes",
688 sn->packets[0] + sn->packets[1],
689 sn->bytes[0] + sn->bytes[1]);
690 switch (sn->ruletype) {
691 case PF_NAT:
692 if (sn->rule != -1)
693 printf(", nat rule %u", sn->rule);
694 break;
695 case PF_RDR:
696 if (sn->rule != -1)
697 printf(", rdr rule %u", sn->rule);
698 break;
699 case PF_PASS:
700 case PF_MATCH:
701 if (sn->rule != -1)
702 printf(", filter rule %u", sn->rule);
703 break;
704 }
705 printf("\n");
706 }
707 }
708
709 static void
print_eth_addr(const struct pfctl_eth_addr * a)710 print_eth_addr(const struct pfctl_eth_addr *a)
711 {
712 int i, masklen = ETHER_ADDR_LEN * 8;
713 bool seen_unset = false;
714
715 for (i = 0; i < ETHER_ADDR_LEN; i++) {
716 if (a->addr[i] != 0)
717 break;
718 }
719
720 /* Unset, so don't print anything. */
721 if (i == ETHER_ADDR_LEN)
722 return;
723
724 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "",
725 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4],
726 a->addr[5]);
727
728 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) {
729 bool isset = a->mask[i / 8] & (1 << i % 8);
730
731 if (! seen_unset) {
732 if (isset)
733 continue;
734 seen_unset = true;
735 masklen = i;
736 } else {
737 /* Not actually a continuous mask, so print the whole
738 * thing. */
739 if (isset)
740 break;
741 continue;
742 }
743 }
744
745 if (masklen == (ETHER_ADDR_LEN * 8))
746 return;
747
748 if (i == (ETHER_ADDR_LEN * 8)) {
749 printf("/%d", masklen);
750 return;
751 }
752
753 printf("&%02x:%02x:%02x:%02x:%02x:%02x",
754 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4],
755 a->mask[5]);
756 }
757
758 void
print_eth_rule(struct pfctl_eth_rule * r,const char * anchor_call,int rule_numbers)759 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call,
760 int rule_numbers)
761 {
762 static const char *actiontypes[] = { "pass", "block", "", "", "", "",
763 "", "", "", "", "", "", "match" };
764
765 int i;
766
767 if (rule_numbers)
768 printf("@%u ", r->nr);
769
770 printf("ether ");
771 if (anchor_call[0]) {
772 if (anchor_call[0] == '_') {
773 printf("anchor");
774 } else
775 printf("anchor \"%s\"", anchor_call);
776 } else {
777 printf("%s", actiontypes[r->action]);
778 }
779 if (r->direction == PF_IN)
780 printf(" in");
781 else if (r->direction == PF_OUT)
782 printf(" out");
783
784 if (r->quick)
785 printf(" quick");
786 if (r->ifname[0]) {
787 if (r->ifnot)
788 printf(" on ! %s", r->ifname);
789 else
790 printf(" on %s", r->ifname);
791 }
792 if (r->bridge_to[0])
793 printf(" bridge-to %s", r->bridge_to);
794 if (r->proto)
795 printf(" proto 0x%04x", r->proto);
796
797 if (r->src.isset) {
798 printf(" from ");
799 print_eth_addr(&r->src);
800 }
801 if (r->dst.isset) {
802 printf(" to ");
803 print_eth_addr(&r->dst);
804 }
805 printf(" l3");
806 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst,
807 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0,
808 0, 0);
809
810 i = 0;
811 while (r->label[i][0])
812 printf(" label \"%s\"", r->label[i++]);
813 if (r->ridentifier)
814 printf(" ridentifier %u", r->ridentifier);
815
816 if (r->qname[0])
817 printf(" queue %s", r->qname);
818 if (r->tagname[0])
819 printf(" tag %s", r->tagname);
820 if (r->match_tagname[0]) {
821 if (r->match_tag_not)
822 printf(" !");
823 printf(" tagged %s", r->match_tagname);
824 }
825 if (r->dnpipe)
826 printf(" %s %d",
827 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
828 r->dnpipe);
829 }
830
831 void
print_rule(struct pfctl_rule * r,const char * anchor_call,int verbose,int numeric)832 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric)
833 {
834 static const char *actiontypes[] = { "pass", "block", "scrub",
835 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr",
836 "", "", "match"};
837 static const char *anchortypes[] = { "anchor", "anchor", "anchor",
838 "anchor", "nat-anchor", "nat-anchor", "binat-anchor",
839 "binat-anchor", "rdr-anchor", "rdr-anchor" };
840 int i, ropts;
841 char *p;
842
843 if (verbose)
844 printf("@%d ", r->nr);
845 if (r->action == PF_MATCH)
846 printf("match");
847 else if (r->action > PF_NORDR)
848 printf("action(%d)", r->action);
849 else if (anchor_call[0]) {
850 p = strrchr(anchor_call, '/');
851 if (p ? p[1] == '_' : anchor_call[0] == '_')
852 printf("%s", anchortypes[r->action]);
853 else
854 printf("%s \"%s\"", anchortypes[r->action],
855 anchor_call);
856 } else {
857 printf("%s", actiontypes[r->action]);
858 if (r->natpass)
859 printf(" pass");
860 }
861 if (r->action == PF_DROP) {
862 if (r->rule_flag & PFRULE_RETURN)
863 printf(" return");
864 else if (r->rule_flag & PFRULE_RETURNRST) {
865 if (!r->return_ttl)
866 printf(" return-rst");
867 else
868 printf(" return-rst(ttl %d)", r->return_ttl);
869 } else if (r->rule_flag & PFRULE_RETURNICMP) {
870 const struct icmpcodeent *ic, *ic6;
871
872 ic = geticmpcodebynumber(r->return_icmp >> 8,
873 r->return_icmp & 255, AF_INET);
874 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
875 r->return_icmp6 & 255, AF_INET6);
876
877 switch (r->af) {
878 case AF_INET:
879 printf(" return-icmp");
880 if (ic == NULL)
881 printf("(%u)", r->return_icmp & 255);
882 else
883 printf("(%s)", ic->name);
884 break;
885 case AF_INET6:
886 printf(" return-icmp6");
887 if (ic6 == NULL)
888 printf("(%u)", r->return_icmp6 & 255);
889 else
890 printf("(%s)", ic6->name);
891 break;
892 default:
893 printf(" return-icmp");
894 if (ic == NULL)
895 printf("(%u, ", r->return_icmp & 255);
896 else
897 printf("(%s, ", ic->name);
898 if (ic6 == NULL)
899 printf("%u)", r->return_icmp6 & 255);
900 else
901 printf("%s)", ic6->name);
902 break;
903 }
904 } else
905 printf(" drop");
906 }
907 if (r->direction == PF_IN)
908 printf(" in");
909 else if (r->direction == PF_OUT)
910 printf(" out");
911 if (r->log) {
912 printf(" log");
913 if (r->log & ~PF_LOG || r->logif) {
914 int count = 0;
915
916 printf(" (");
917 if (r->log & PF_LOG_ALL)
918 printf("%sall", count++ ? ", " : "");
919 if (r->log & PF_LOG_MATCHES)
920 printf("%smatches", count++ ? ", " : "");
921 if (r->log & PF_LOG_SOCKET_LOOKUP)
922 printf("%suser", count++ ? ", " : "");
923 if (r->logif)
924 printf("%sto pflog%u", count++ ? ", " : "",
925 r->logif);
926 printf(")");
927 }
928 }
929 if (r->quick)
930 printf(" quick");
931 if (r->ifname[0]) {
932 if (r->ifnot)
933 printf(" on ! %s", r->ifname);
934 else
935 printf(" on %s", r->ifname);
936 }
937 if (r->rt) {
938 if (r->rt == PF_ROUTETO)
939 printf(" route-to");
940 else if (r->rt == PF_REPLYTO)
941 printf(" reply-to");
942 else if (r->rt == PF_DUPTO)
943 printf(" dup-to");
944 printf(" ");
945 print_pool(&r->rpool, 0, 0, r->af, PF_PASS);
946 }
947 if (r->af) {
948 if (r->af == AF_INET)
949 printf(" inet");
950 else
951 printf(" inet6");
952 }
953 if (r->proto) {
954 const char *protoname;
955
956 if ((protoname = pfctl_proto2name(r->proto)) != NULL)
957 printf(" proto %s", protoname);
958 else
959 printf(" proto %u", r->proto);
960 }
961 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto,
962 verbose, numeric);
963 if (r->rcv_ifname[0])
964 printf(" received-on %s", r->rcv_ifname);
965 if (r->uid.op)
966 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user",
967 UID_MAX);
968 if (r->gid.op)
969 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group",
970 GID_MAX);
971 if (r->flags || r->flagset) {
972 printf(" flags ");
973 print_flags(r->flags);
974 printf("/");
975 print_flags(r->flagset);
976 } else if ((r->action == PF_PASS || r->action == PF_MATCH) &&
977 (!r->proto || r->proto == IPPROTO_TCP) &&
978 !(r->rule_flag & PFRULE_FRAGMENT) &&
979 !anchor_call[0] && r->keep_state)
980 printf(" flags any");
981 if (r->type) {
982 const struct icmptypeent *it;
983
984 it = geticmptypebynumber(r->type-1, r->af);
985 if (r->af != AF_INET6)
986 printf(" icmp-type");
987 else
988 printf(" icmp6-type");
989 if (it != NULL)
990 printf(" %s", it->name);
991 else
992 printf(" %u", r->type-1);
993 if (r->code) {
994 const struct icmpcodeent *ic;
995
996 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
997 if (ic != NULL)
998 printf(" code %s", ic->name);
999 else
1000 printf(" code %u", r->code-1);
1001 }
1002 }
1003 if (r->tos)
1004 printf(" tos 0x%2.2x", r->tos);
1005 if (r->prio)
1006 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio);
1007 if (r->scrub_flags & PFSTATE_SETMASK) {
1008 char *comma = "";
1009 printf(" set (");
1010 if (r->scrub_flags & PFSTATE_SETPRIO) {
1011 if (r->set_prio[0] == r->set_prio[1])
1012 printf("%s prio %u", comma, r->set_prio[0]);
1013 else
1014 printf("%s prio(%u, %u)", comma, r->set_prio[0],
1015 r->set_prio[1]);
1016 comma = ",";
1017 }
1018 if (r->scrub_flags & PFSTATE_SETTOS) {
1019 printf("%s tos 0x%2.2x", comma, r->set_tos);
1020 comma = ",";
1021 }
1022 printf(" )");
1023 }
1024 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0])
1025 printf(" no state");
1026 else if (r->keep_state == PF_STATE_NORMAL)
1027 printf(" keep state");
1028 else if (r->keep_state == PF_STATE_MODULATE)
1029 printf(" modulate state");
1030 else if (r->keep_state == PF_STATE_SYNPROXY)
1031 printf(" synproxy state");
1032 if (r->prob) {
1033 char buf[20];
1034
1035 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
1036 for (i = strlen(buf)-1; i > 0; i--) {
1037 if (buf[i] == '0')
1038 buf[i] = '\0';
1039 else {
1040 if (buf[i] == '.')
1041 buf[i] = '\0';
1042 break;
1043 }
1044 }
1045 printf(" probability %s%%", buf);
1046 }
1047 ropts = 0;
1048 if (r->max_states || r->max_src_nodes || r->max_src_states)
1049 ropts = 1;
1050 if (r->rule_flag & PFRULE_NOSYNC)
1051 ropts = 1;
1052 if (r->rule_flag & PFRULE_SRCTRACK)
1053 ropts = 1;
1054 if (r->rule_flag & PFRULE_IFBOUND)
1055 ropts = 1;
1056 if (r->rule_flag & PFRULE_STATESLOPPY)
1057 ropts = 1;
1058 if (r->rule_flag & PFRULE_PFLOW)
1059 ropts = 1;
1060 for (i = 0; !ropts && i < PFTM_MAX; ++i)
1061 if (r->timeout[i])
1062 ropts = 1;
1063 if (ropts) {
1064 printf(" (");
1065 if (r->max_states) {
1066 printf("max %u", r->max_states);
1067 ropts = 0;
1068 }
1069 if (r->rule_flag & PFRULE_NOSYNC) {
1070 if (!ropts)
1071 printf(", ");
1072 printf("no-sync");
1073 ropts = 0;
1074 }
1075 if (r->rule_flag & PFRULE_SRCTRACK) {
1076 if (!ropts)
1077 printf(", ");
1078 printf("source-track");
1079 if (r->rule_flag & PFRULE_RULESRCTRACK)
1080 printf(" rule");
1081 else
1082 printf(" global");
1083 ropts = 0;
1084 }
1085 if (r->max_src_states) {
1086 if (!ropts)
1087 printf(", ");
1088 printf("max-src-states %u", r->max_src_states);
1089 ropts = 0;
1090 }
1091 if (r->max_src_conn) {
1092 if (!ropts)
1093 printf(", ");
1094 printf("max-src-conn %u", r->max_src_conn);
1095 ropts = 0;
1096 }
1097 if (r->max_src_conn_rate.limit) {
1098 if (!ropts)
1099 printf(", ");
1100 printf("max-src-conn-rate %u/%u",
1101 r->max_src_conn_rate.limit,
1102 r->max_src_conn_rate.seconds);
1103 ropts = 0;
1104 }
1105 if (r->max_src_nodes) {
1106 if (!ropts)
1107 printf(", ");
1108 printf("max-src-nodes %u", r->max_src_nodes);
1109 ropts = 0;
1110 }
1111 if (r->overload_tblname[0]) {
1112 if (!ropts)
1113 printf(", ");
1114 printf("overload <%s>", r->overload_tblname);
1115 if (r->flush)
1116 printf(" flush");
1117 if (r->flush & PF_FLUSH_GLOBAL)
1118 printf(" global");
1119 }
1120 if (r->rule_flag & PFRULE_IFBOUND) {
1121 if (!ropts)
1122 printf(", ");
1123 printf("if-bound");
1124 ropts = 0;
1125 }
1126 if (r->rule_flag & PFRULE_STATESLOPPY) {
1127 if (!ropts)
1128 printf(", ");
1129 printf("sloppy");
1130 ropts = 0;
1131 }
1132 if (r->rule_flag & PFRULE_PFLOW) {
1133 if (!ropts)
1134 printf(", ");
1135 printf("pflow");
1136 ropts = 0;
1137 }
1138 for (i = 0; i < PFTM_MAX; ++i)
1139 if (r->timeout[i]) {
1140 int j;
1141
1142 if (!ropts)
1143 printf(", ");
1144 ropts = 0;
1145 for (j = 0; pf_timeouts[j].name != NULL;
1146 ++j)
1147 if (pf_timeouts[j].timeout == i)
1148 break;
1149 printf("%s %u", pf_timeouts[j].name == NULL ?
1150 "inv.timeout" : pf_timeouts[j].name,
1151 r->timeout[i]);
1152 }
1153 printf(")");
1154 }
1155 if (r->allow_opts)
1156 printf(" allow-opts");
1157 if (r->rule_flag & PFRULE_FRAGMENT)
1158 printf(" fragment");
1159 if (r->action == PF_SCRUB) {
1160 /* Scrub flags for old-style scrub. */
1161 if (r->rule_flag & PFRULE_NODF)
1162 printf(" no-df");
1163 if (r->rule_flag & PFRULE_RANDOMID)
1164 printf(" random-id");
1165 if (r->min_ttl)
1166 printf(" min-ttl %d", r->min_ttl);
1167 if (r->max_mss)
1168 printf(" max-mss %d", r->max_mss);
1169 if (r->rule_flag & PFRULE_SET_TOS)
1170 printf(" set-tos 0x%2.2x", r->set_tos);
1171 if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
1172 printf(" reassemble tcp");
1173 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */
1174 printf(" fragment %sreassemble",
1175 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : "");
1176 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) {
1177 /* Scrub actions on normal rules. */
1178 printf(" scrub(");
1179 if (r->scrub_flags & PFSTATE_NODF)
1180 printf(" no-df");
1181 if (r->scrub_flags & PFSTATE_RANDOMID)
1182 printf(" random-id");
1183 if (r->min_ttl)
1184 printf(" min-ttl %d", r->min_ttl);
1185 if (r->scrub_flags & PFSTATE_SETTOS)
1186 printf(" set-tos 0x%2.2x", r->set_tos);
1187 if (r->scrub_flags & PFSTATE_SCRUB_TCP)
1188 printf(" reassemble tcp");
1189 if (r->max_mss)
1190 printf(" max-mss %d", r->max_mss);
1191 printf(")");
1192 }
1193 i = 0;
1194 while (r->label[i][0])
1195 printf(" label \"%s\"", r->label[i++]);
1196 if (r->ridentifier)
1197 printf(" ridentifier %u", r->ridentifier);
1198 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */
1199 if (r->dnrpipe)
1200 printf(" %s(%d, %d)",
1201 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1202 r->dnpipe, r->dnrpipe);
1203 else if (r->dnpipe)
1204 printf(" %s %d",
1205 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1206 r->dnpipe);
1207 if (r->qname[0] && r->pqname[0])
1208 printf(" queue(%s, %s)", r->qname, r->pqname);
1209 else if (r->qname[0])
1210 printf(" queue %s", r->qname);
1211 if (r->tagname[0])
1212 printf(" tag %s", r->tagname);
1213 if (r->match_tagname[0]) {
1214 if (r->match_tag_not)
1215 printf(" !");
1216 printf(" tagged %s", r->match_tagname);
1217 }
1218 if (r->rtableid != -1)
1219 printf(" rtable %u", r->rtableid);
1220 if (r->divert.port) {
1221 #ifdef __FreeBSD__
1222 printf(" divert-to %u", ntohs(r->divert.port));
1223 #else
1224 if (PF_AZERO(&r->divert.addr, r->af)) {
1225 printf(" divert-reply");
1226 } else {
1227 /* XXX cut&paste from print_addr */
1228 char buf[48];
1229
1230 printf(" divert-to ");
1231 if (inet_ntop(r->af, &r->divert.addr, buf,
1232 sizeof(buf)) == NULL)
1233 printf("?");
1234 else
1235 printf("%s", buf);
1236 printf(" port %u", ntohs(r->divert.port));
1237 }
1238 #endif
1239 }
1240 if (!anchor_call[0] && ! TAILQ_EMPTY(&r->nat.list) &&
1241 r->naf != r->af) {
1242 printf(" af-to %s from ", r->naf == AF_INET ? "inet" : "inet6");
1243 print_pool(&r->nat, r->nat.proxy_port[0], r->nat.proxy_port[1],
1244 r->naf ? r->naf : r->af, PF_NAT);
1245 if (r->rdr.cur != NULL && !TAILQ_EMPTY(&r->rdr.list)) {
1246 printf(" to ");
1247 print_pool(&r->rdr, r->rdr.proxy_port[0],
1248 r->rdr.proxy_port[1], r->naf ? r->naf : r->af,
1249 PF_RDR);
1250 }
1251 }
1252 if (!anchor_call[0] &&
1253 (r->action == PF_NAT || r->action == PF_BINAT ||
1254 r->action == PF_RDR)) {
1255 printf(" -> ");
1256 print_pool(&r->rpool, r->rpool.proxy_port[0],
1257 r->rpool.proxy_port[1], r->af, r->action);
1258 }
1259 }
1260
1261 void
print_tabledef(const char * name,int flags,int addrs,struct node_tinithead * nodes)1262 print_tabledef(const char *name, int flags, int addrs,
1263 struct node_tinithead *nodes)
1264 {
1265 struct node_tinit *ti, *nti;
1266 struct node_host *h;
1267
1268 printf("table <%s>", name);
1269 if (flags & PFR_TFLAG_CONST)
1270 printf(" const");
1271 if (flags & PFR_TFLAG_PERSIST)
1272 printf(" persist");
1273 if (flags & PFR_TFLAG_COUNTERS)
1274 printf(" counters");
1275 SIMPLEQ_FOREACH(ti, nodes, entries) {
1276 if (ti->file) {
1277 printf(" file \"%s\"", ti->file);
1278 continue;
1279 }
1280 printf(" {");
1281 for (;;) {
1282 for (h = ti->host; h != NULL; h = h->next) {
1283 printf(h->not ? " !" : " ");
1284 print_addr(&h->addr, h->af, 0);
1285 }
1286 nti = SIMPLEQ_NEXT(ti, entries);
1287 if (nti != NULL && nti->file == NULL)
1288 ti = nti; /* merge lists */
1289 else
1290 break;
1291 }
1292 printf(" }");
1293 }
1294 if (addrs && SIMPLEQ_EMPTY(nodes))
1295 printf(" { }");
1296 printf("\n");
1297 }
1298
1299 int
parse_flags(char * s)1300 parse_flags(char *s)
1301 {
1302 char *p, *q;
1303 uint16_t f = 0;
1304
1305 for (p = s; *p; p++) {
1306 if ((q = strchr(tcpflags, *p)) == NULL)
1307 return -1;
1308 else
1309 f |= 1 << (q - tcpflags);
1310 }
1311 return (f ? f : TH_FLAGS);
1312 }
1313
1314 void
set_ipmask(struct node_host * h,u_int8_t b)1315 set_ipmask(struct node_host *h, u_int8_t b)
1316 {
1317 struct pf_addr *m, *n;
1318 int i, j = 0;
1319
1320 m = &h->addr.v.a.mask;
1321 memset(m, 0, sizeof(*m));
1322
1323 while (b >= 32) {
1324 m->addr32[j++] = 0xffffffff;
1325 b -= 32;
1326 }
1327 for (i = 31; i > 31-b; --i)
1328 m->addr32[j] |= (1 << i);
1329 if (b)
1330 m->addr32[j] = htonl(m->addr32[j]);
1331
1332 /* Mask off bits of the address that will never be used. */
1333 n = &h->addr.v.a.addr;
1334 if (h->addr.type == PF_ADDR_ADDRMASK)
1335 for (i = 0; i < 4; i++)
1336 n->addr32[i] = n->addr32[i] & m->addr32[i];
1337 }
1338
1339 int
check_netmask(struct node_host * h,sa_family_t af)1340 check_netmask(struct node_host *h, sa_family_t af)
1341 {
1342 struct node_host *n = NULL;
1343 struct pf_addr *m;
1344
1345 for (n = h; n != NULL; n = n->next) {
1346 if (h->addr.type == PF_ADDR_TABLE)
1347 continue;
1348 m = &h->addr.v.a.mask;
1349 /* netmasks > 32 bit are invalid on v4 */
1350 if (af == AF_INET &&
1351 (m->addr32[1] || m->addr32[2] || m->addr32[3])) {
1352 fprintf(stderr, "netmask %u invalid for IPv4 address\n",
1353 unmask(m, AF_INET6));
1354 return (1);
1355 }
1356 }
1357 return (0);
1358 }
1359
1360 struct node_host *
gen_dynnode(struct node_host * h,sa_family_t af)1361 gen_dynnode(struct node_host *h, sa_family_t af)
1362 {
1363 struct node_host *n;
1364 struct pf_addr *m;
1365
1366 if (h->addr.type != PF_ADDR_DYNIFTL)
1367 return (NULL);
1368
1369 if ((n = calloc(1, sizeof(*n))) == NULL)
1370 return (NULL);
1371 bcopy(h, n, sizeof(*n));
1372 n->ifname = NULL;
1373 n->next = NULL;
1374 n->tail = NULL;
1375
1376 /* fix up netmask */
1377 m = &n->addr.v.a.mask;
1378 if (af == AF_INET && unmask(m, AF_INET6) > 32)
1379 set_ipmask(n, 32);
1380
1381 return (n);
1382 }
1383
1384 /* interface lookup routines */
1385
1386 static struct node_host *iftab;
1387
1388 /*
1389 * Retrieve the list of groups this interface is a member of and make sure
1390 * each group is in the group map.
1391 */
1392 static void
ifa_add_groups_to_map(char * ifa_name)1393 ifa_add_groups_to_map(char *ifa_name)
1394 {
1395 int s, len;
1396 struct ifgroupreq ifgr;
1397 struct ifg_req *ifg;
1398
1399 s = get_query_socket();
1400
1401 /* Get size of group list for this interface */
1402 memset(&ifgr, 0, sizeof(ifgr));
1403 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ);
1404 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1405 err(1, "SIOCGIFGROUP");
1406
1407 /* Retrieve group list for this interface */
1408 len = ifgr.ifgr_len;
1409 ifgr.ifgr_groups =
1410 (struct ifg_req *)calloc(len / sizeof(struct ifg_req),
1411 sizeof(struct ifg_req));
1412 if (ifgr.ifgr_groups == NULL)
1413 err(1, "calloc");
1414 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1415 err(1, "SIOCGIFGROUP");
1416
1417 ifg = ifgr.ifgr_groups;
1418 for (; ifg && len >= sizeof(struct ifg_req); ifg++) {
1419 len -= sizeof(struct ifg_req);
1420 if (strcmp(ifg->ifgrq_group, "all")) {
1421 ENTRY item;
1422 ENTRY *ret_item;
1423 int *answer;
1424
1425 item.key = ifg->ifgrq_group;
1426 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) {
1427 struct ifgroupreq ifgr2;
1428
1429 /* Don't know the answer yet */
1430 if ((answer = malloc(sizeof(int))) == NULL)
1431 err(1, "malloc");
1432
1433 bzero(&ifgr2, sizeof(ifgr2));
1434 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group,
1435 sizeof(ifgr2.ifgr_name));
1436 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0)
1437 *answer = ifgr2.ifgr_len;
1438 else
1439 *answer = 0;
1440
1441 item.key = strdup(ifg->ifgrq_group);
1442 item.data = answer;
1443 if (hsearch_r(item, ENTER, &ret_item,
1444 &isgroup_map) == 0)
1445 err(1, "interface group query response"
1446 " map insert");
1447 }
1448 }
1449 }
1450 free(ifgr.ifgr_groups);
1451 }
1452
1453 void
ifa_load(void)1454 ifa_load(void)
1455 {
1456 struct ifaddrs *ifap, *ifa;
1457 struct node_host *n = NULL, *h = NULL;
1458
1459 if (getifaddrs(&ifap) < 0)
1460 err(1, "getifaddrs");
1461
1462 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1463 if (!(ifa->ifa_addr->sa_family == AF_INET ||
1464 ifa->ifa_addr->sa_family == AF_INET6 ||
1465 ifa->ifa_addr->sa_family == AF_LINK))
1466 continue;
1467 n = calloc(1, sizeof(struct node_host));
1468 if (n == NULL)
1469 err(1, "address: calloc");
1470 n->af = ifa->ifa_addr->sa_family;
1471 n->ifa_flags = ifa->ifa_flags;
1472 #ifdef __KAME__
1473 if (n->af == AF_INET6 &&
1474 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
1475 ifa->ifa_addr)->sin6_addr) &&
1476 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
1477 0) {
1478 struct sockaddr_in6 *sin6;
1479
1480 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1481 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
1482 sin6->sin6_addr.s6_addr[3];
1483 sin6->sin6_addr.s6_addr[2] = 0;
1484 sin6->sin6_addr.s6_addr[3] = 0;
1485 }
1486 #endif
1487 n->ifindex = 0;
1488 if (n->af == AF_INET) {
1489 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *)
1490 ifa->ifa_addr)->sin_addr.s_addr,
1491 sizeof(struct in_addr));
1492 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *)
1493 ifa->ifa_netmask)->sin_addr.s_addr,
1494 sizeof(struct in_addr));
1495 if (ifa->ifa_broadaddr != NULL)
1496 memcpy(&n->bcast, &((struct sockaddr_in *)
1497 ifa->ifa_broadaddr)->sin_addr.s_addr,
1498 sizeof(struct in_addr));
1499 if (ifa->ifa_dstaddr != NULL)
1500 memcpy(&n->peer, &((struct sockaddr_in *)
1501 ifa->ifa_dstaddr)->sin_addr.s_addr,
1502 sizeof(struct in_addr));
1503 } else if (n->af == AF_INET6) {
1504 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *)
1505 ifa->ifa_addr)->sin6_addr.s6_addr,
1506 sizeof(struct in6_addr));
1507 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *)
1508 ifa->ifa_netmask)->sin6_addr.s6_addr,
1509 sizeof(struct in6_addr));
1510 if (ifa->ifa_broadaddr != NULL)
1511 memcpy(&n->bcast, &((struct sockaddr_in6 *)
1512 ifa->ifa_broadaddr)->sin6_addr.s6_addr,
1513 sizeof(struct in6_addr));
1514 if (ifa->ifa_dstaddr != NULL)
1515 memcpy(&n->peer, &((struct sockaddr_in6 *)
1516 ifa->ifa_dstaddr)->sin6_addr.s6_addr,
1517 sizeof(struct in6_addr));
1518 n->ifindex = ((struct sockaddr_in6 *)
1519 ifa->ifa_addr)->sin6_scope_id;
1520 } else if (n->af == AF_LINK) {
1521 ifa_add_groups_to_map(ifa->ifa_name);
1522 }
1523 if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
1524 err(1, "ifa_load: strdup");
1525 n->next = NULL;
1526 n->tail = n;
1527 if (h == NULL)
1528 h = n;
1529 else {
1530 h->tail->next = n;
1531 h->tail = n;
1532 }
1533 }
1534
1535 iftab = h;
1536 freeifaddrs(ifap);
1537 }
1538
1539 static int
get_socket_domain(void)1540 get_socket_domain(void)
1541 {
1542 int sdom;
1543
1544 sdom = AF_UNSPEC;
1545 #ifdef WITH_INET6
1546 if (sdom == AF_UNSPEC && feature_present("inet6"))
1547 sdom = AF_INET6;
1548 #endif
1549 #ifdef WITH_INET
1550 if (sdom == AF_UNSPEC && feature_present("inet"))
1551 sdom = AF_INET;
1552 #endif
1553 if (sdom == AF_UNSPEC)
1554 sdom = AF_LINK;
1555
1556 return (sdom);
1557 }
1558
1559 int
get_query_socket(void)1560 get_query_socket(void)
1561 {
1562 static int s = -1;
1563
1564 if (s == -1) {
1565 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1)
1566 err(1, "socket");
1567 }
1568
1569 return (s);
1570 }
1571
1572 /*
1573 * Returns the response len if the name is a group, otherwise returns 0.
1574 */
1575 static int
is_a_group(char * name)1576 is_a_group(char *name)
1577 {
1578 ENTRY item;
1579 ENTRY *ret_item;
1580
1581 item.key = name;
1582 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0)
1583 return (0);
1584
1585 return (*(int *)ret_item->data);
1586 }
1587
1588 struct node_host *
ifa_exists(char * ifa_name)1589 ifa_exists(char *ifa_name)
1590 {
1591 struct node_host *n;
1592
1593 if (iftab == NULL)
1594 ifa_load();
1595
1596 /* check whether this is a group */
1597 if (is_a_group(ifa_name)) {
1598 /* fake a node_host */
1599 if ((n = calloc(1, sizeof(*n))) == NULL)
1600 err(1, "calloc");
1601 if ((n->ifname = strdup(ifa_name)) == NULL)
1602 err(1, "strdup");
1603 return (n);
1604 }
1605
1606 for (n = iftab; n; n = n->next) {
1607 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
1608 return (n);
1609 }
1610
1611 return (NULL);
1612 }
1613
1614 struct node_host *
ifa_grouplookup(char * ifa_name,int flags)1615 ifa_grouplookup(char *ifa_name, int flags)
1616 {
1617 struct ifg_req *ifg;
1618 struct ifgroupreq ifgr;
1619 int s, len;
1620 struct node_host *n, *h = NULL;
1621
1622 s = get_query_socket();
1623 len = is_a_group(ifa_name);
1624 if (len == 0)
1625 return (NULL);
1626 bzero(&ifgr, sizeof(ifgr));
1627 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
1628 ifgr.ifgr_len = len;
1629 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
1630 err(1, "calloc");
1631 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
1632 err(1, "SIOCGIFGMEMB");
1633
1634 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req);
1635 ifg++) {
1636 len -= sizeof(struct ifg_req);
1637 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL)
1638 continue;
1639 if (h == NULL)
1640 h = n;
1641 else {
1642 h->tail->next = n;
1643 h->tail = n->tail;
1644 }
1645 }
1646 free(ifgr.ifgr_groups);
1647
1648 return (h);
1649 }
1650
1651 struct node_host *
ifa_lookup(char * ifa_name,int flags)1652 ifa_lookup(char *ifa_name, int flags)
1653 {
1654 struct node_host *p = NULL, *h = NULL, *n = NULL;
1655 int got4 = 0, got6 = 0;
1656 const char *last_if = NULL;
1657
1658 /* first load iftab and isgroup_map */
1659 if (iftab == NULL)
1660 ifa_load();
1661
1662 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL)
1663 return (h);
1664
1665 if (!strncmp(ifa_name, "self", IFNAMSIZ))
1666 ifa_name = NULL;
1667
1668 for (p = iftab; p; p = p->next) {
1669 if (ifa_skip_if(ifa_name, p))
1670 continue;
1671 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
1672 continue;
1673 if ((flags & PFI_AFLAG_BROADCAST) &&
1674 !(p->ifa_flags & IFF_BROADCAST))
1675 continue;
1676 if ((flags & PFI_AFLAG_PEER) &&
1677 !(p->ifa_flags & IFF_POINTOPOINT))
1678 continue;
1679 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
1680 continue;
1681 if (last_if == NULL || strcmp(last_if, p->ifname))
1682 got4 = got6 = 0;
1683 last_if = p->ifname;
1684 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
1685 continue;
1686 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 &&
1687 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6))
1688 continue;
1689 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
1690 continue;
1691 if (p->af == AF_INET)
1692 got4 = 1;
1693 else
1694 got6 = 1;
1695 n = calloc(1, sizeof(struct node_host));
1696 if (n == NULL)
1697 err(1, "address: calloc");
1698 n->af = p->af;
1699 if (flags & PFI_AFLAG_BROADCAST)
1700 memcpy(&n->addr.v.a.addr, &p->bcast,
1701 sizeof(struct pf_addr));
1702 else if (flags & PFI_AFLAG_PEER)
1703 memcpy(&n->addr.v.a.addr, &p->peer,
1704 sizeof(struct pf_addr));
1705 else
1706 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
1707 sizeof(struct pf_addr));
1708 if (flags & PFI_AFLAG_NETWORK)
1709 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af));
1710 else {
1711 if (n->af == AF_INET) {
1712 if (p->ifa_flags & IFF_LOOPBACK &&
1713 p->ifa_flags & IFF_LINK1)
1714 memcpy(&n->addr.v.a.mask,
1715 &p->addr.v.a.mask,
1716 sizeof(struct pf_addr));
1717 else
1718 set_ipmask(n, 32);
1719 } else
1720 set_ipmask(n, 128);
1721 }
1722 n->ifindex = p->ifindex;
1723 n->ifname = strdup(p->ifname);
1724
1725 n->next = NULL;
1726 n->tail = n;
1727 if (h == NULL)
1728 h = n;
1729 else {
1730 h->tail->next = n;
1731 h->tail = n;
1732 }
1733 }
1734 return (h);
1735 }
1736
1737 int
ifa_skip_if(const char * filter,struct node_host * p)1738 ifa_skip_if(const char *filter, struct node_host *p)
1739 {
1740 int n;
1741
1742 if (p->af != AF_INET && p->af != AF_INET6)
1743 return (1);
1744 if (filter == NULL || !*filter)
1745 return (0);
1746 if (!strcmp(p->ifname, filter))
1747 return (0); /* exact match */
1748 n = strlen(filter);
1749 if (n < 1 || n >= IFNAMSIZ)
1750 return (1); /* sanity check */
1751 if (filter[n-1] >= '0' && filter[n-1] <= '9')
1752 return (1); /* only do exact match in that case */
1753 if (strncmp(p->ifname, filter, n))
1754 return (1); /* prefix doesn't match */
1755 return (p->ifname[n] < '0' || p->ifname[n] > '9');
1756 }
1757
1758
1759 struct node_host *
host(const char * s)1760 host(const char *s)
1761 {
1762 struct node_host *h = NULL;
1763 int mask, v4mask, v6mask, cont = 1;
1764 char *p, *q, *ps;
1765
1766 if ((p = strrchr(s, '/')) != NULL) {
1767 mask = strtol(p+1, &q, 0);
1768 if (!q || *q || mask > 128 || q == (p+1)) {
1769 fprintf(stderr, "invalid netmask '%s'\n", p);
1770 return (NULL);
1771 }
1772 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
1773 err(1, "host: malloc");
1774 strlcpy(ps, s, strlen(s) - strlen(p) + 1);
1775 v4mask = v6mask = mask;
1776 } else {
1777 if ((ps = strdup(s)) == NULL)
1778 err(1, "host: strdup");
1779 v4mask = 32;
1780 v6mask = 128;
1781 mask = -1;
1782 }
1783
1784 /* IPv4 address? */
1785 if (cont && (h = host_v4(s, mask)) != NULL)
1786 cont = 0;
1787
1788 /* IPv6 address? */
1789 if (cont && (h = host_v6(ps, v6mask)) != NULL)
1790 cont = 0;
1791
1792 /* interface with this name exists? */
1793 /* expensive with thousands of interfaces - prioritze IPv4/6 check */
1794 if (cont && (h = host_if(ps, mask, &cont)) != NULL)
1795 cont = 0;
1796
1797 /* dns lookup */
1798 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL)
1799 cont = 0;
1800 free(ps);
1801
1802 if (h == NULL || cont == 1) {
1803 fprintf(stderr, "no IP address found for %s\n", s);
1804 return (NULL);
1805 }
1806 return (h);
1807 }
1808
1809 struct node_host *
host_if(const char * s,int mask,int * cont)1810 host_if(const char *s, int mask, int *cont)
1811 {
1812 struct node_host *n, *h = NULL;
1813 char *p, *ps;
1814 int flags = 0;
1815
1816 if ((ps = strdup(s)) == NULL)
1817 err(1, "host_if: strdup");
1818 while ((p = strrchr(ps, ':')) != NULL) {
1819 if (!strcmp(p+1, "network"))
1820 flags |= PFI_AFLAG_NETWORK;
1821 else if (!strcmp(p+1, "broadcast"))
1822 flags |= PFI_AFLAG_BROADCAST;
1823 else if (!strcmp(p+1, "peer"))
1824 flags |= PFI_AFLAG_PEER;
1825 else if (!strcmp(p+1, "0"))
1826 flags |= PFI_AFLAG_NOALIAS;
1827 else {
1828 free(ps);
1829 return (NULL);
1830 }
1831 *p = '\0';
1832 *cont = 0;
1833 }
1834 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
1835 fprintf(stderr, "illegal combination of interface modifiers\n");
1836 free(ps);
1837 return (NULL);
1838 }
1839 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
1840 fprintf(stderr, "network or broadcast lookup, but "
1841 "extra netmask given\n");
1842 free(ps);
1843 return (NULL);
1844 }
1845 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) {
1846 /* interface with this name exists */
1847 h = ifa_lookup(ps, flags);
1848 for (n = h; n != NULL && mask > -1; n = n->next)
1849 set_ipmask(n, mask);
1850 }
1851
1852 free(ps);
1853 return (h);
1854 }
1855
1856 struct node_host *
host_v4(const char * s,int mask)1857 host_v4(const char *s, int mask)
1858 {
1859 struct node_host *h = NULL;
1860 struct in_addr ina;
1861 int bits = 32;
1862
1863 memset(&ina, 0, sizeof(struct in_addr));
1864 if (strrchr(s, '/') != NULL) {
1865 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1)
1866 return (NULL);
1867 } else {
1868 if (inet_pton(AF_INET, s, &ina) != 1)
1869 return (NULL);
1870 }
1871
1872 h = calloc(1, sizeof(struct node_host));
1873 if (h == NULL)
1874 err(1, "address: calloc");
1875 h->ifname = NULL;
1876 h->af = AF_INET;
1877 h->addr.v.a.addr.addr32[0] = ina.s_addr;
1878 set_ipmask(h, bits);
1879 h->next = NULL;
1880 h->tail = h;
1881
1882 return (h);
1883 }
1884
1885 struct node_host *
host_v6(const char * s,int mask)1886 host_v6(const char *s, int mask)
1887 {
1888 struct addrinfo hints, *res;
1889 struct node_host *h = NULL;
1890
1891 memset(&hints, 0, sizeof(hints));
1892 hints.ai_family = AF_INET6;
1893 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1894 hints.ai_flags = AI_NUMERICHOST;
1895 if (getaddrinfo(s, "0", &hints, &res) == 0) {
1896 h = calloc(1, sizeof(struct node_host));
1897 if (h == NULL)
1898 err(1, "address: calloc");
1899 h->ifname = NULL;
1900 h->af = AF_INET6;
1901 memcpy(&h->addr.v.a.addr,
1902 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
1903 sizeof(h->addr.v.a.addr));
1904 h->ifindex =
1905 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1906 set_ipmask(h, mask);
1907 freeaddrinfo(res);
1908 h->next = NULL;
1909 h->tail = h;
1910 }
1911
1912 return (h);
1913 }
1914
1915 struct node_host *
host_dns(const char * s,int v4mask,int v6mask)1916 host_dns(const char *s, int v4mask, int v6mask)
1917 {
1918 struct addrinfo hints, *res0, *res;
1919 struct node_host *n, *h = NULL;
1920 int error, noalias = 0;
1921 int got4 = 0, got6 = 0;
1922 char *p, *ps;
1923
1924 if ((ps = strdup(s)) == NULL)
1925 err(1, "host_dns: strdup");
1926 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
1927 noalias = 1;
1928 *p = '\0';
1929 }
1930 memset(&hints, 0, sizeof(hints));
1931 hints.ai_family = PF_UNSPEC;
1932 hints.ai_socktype = SOCK_STREAM; /* DUMMY */
1933 error = getaddrinfo(ps, NULL, &hints, &res0);
1934 if (error) {
1935 free(ps);
1936 return (h);
1937 }
1938
1939 for (res = res0; res; res = res->ai_next) {
1940 if (res->ai_family != AF_INET &&
1941 res->ai_family != AF_INET6)
1942 continue;
1943 if (noalias) {
1944 if (res->ai_family == AF_INET) {
1945 if (got4)
1946 continue;
1947 got4 = 1;
1948 } else {
1949 if (got6)
1950 continue;
1951 got6 = 1;
1952 }
1953 }
1954 n = calloc(1, sizeof(struct node_host));
1955 if (n == NULL)
1956 err(1, "host_dns: calloc");
1957 n->ifname = NULL;
1958 n->af = res->ai_family;
1959 if (res->ai_family == AF_INET) {
1960 memcpy(&n->addr.v.a.addr,
1961 &((struct sockaddr_in *)
1962 res->ai_addr)->sin_addr.s_addr,
1963 sizeof(struct in_addr));
1964 set_ipmask(n, v4mask);
1965 } else {
1966 memcpy(&n->addr.v.a.addr,
1967 &((struct sockaddr_in6 *)
1968 res->ai_addr)->sin6_addr.s6_addr,
1969 sizeof(struct in6_addr));
1970 n->ifindex =
1971 ((struct sockaddr_in6 *)
1972 res->ai_addr)->sin6_scope_id;
1973 set_ipmask(n, v6mask);
1974 }
1975 n->next = NULL;
1976 n->tail = n;
1977 if (h == NULL)
1978 h = n;
1979 else {
1980 h->tail->next = n;
1981 h->tail = n;
1982 }
1983 }
1984 freeaddrinfo(res0);
1985 free(ps);
1986
1987 return (h);
1988 }
1989
1990 /*
1991 * convert a hostname to a list of addresses and put them in the given buffer.
1992 * test:
1993 * if set to 1, only simple addresses are accepted (no netblock, no "!").
1994 */
1995 int
append_addr(struct pfr_buffer * b,char * s,int test)1996 append_addr(struct pfr_buffer *b, char *s, int test)
1997 {
1998 char *r;
1999 struct node_host *h, *n;
2000 int rv, not = 0;
2001
2002 for (r = s; *r == '!'; r++)
2003 not = !not;
2004 if ((n = host(r)) == NULL) {
2005 errno = 0;
2006 return (-1);
2007 }
2008 rv = append_addr_host(b, n, test, not);
2009 do {
2010 h = n;
2011 n = n->next;
2012 free(h);
2013 } while (n != NULL);
2014 return (rv);
2015 }
2016
2017 /*
2018 * same as previous function, but with a pre-parsed input and the ability
2019 * to "negate" the result. Does not free the node_host list.
2020 * not:
2021 * setting it to 1 is equivalent to adding "!" in front of parameter s.
2022 */
2023 int
append_addr_host(struct pfr_buffer * b,struct node_host * n,int test,int not)2024 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
2025 {
2026 int bits;
2027 struct pfr_addr addr;
2028
2029 do {
2030 bzero(&addr, sizeof(addr));
2031 addr.pfra_not = n->not ^ not;
2032 addr.pfra_af = n->af;
2033 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af);
2034 switch (n->af) {
2035 case AF_INET:
2036 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
2037 bits = 32;
2038 break;
2039 case AF_INET6:
2040 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
2041 sizeof(struct in6_addr));
2042 bits = 128;
2043 break;
2044 default:
2045 errno = EINVAL;
2046 return (-1);
2047 }
2048 if ((test && (not || addr.pfra_net != bits)) ||
2049 addr.pfra_net > bits) {
2050 errno = EINVAL;
2051 return (-1);
2052 }
2053 if (pfr_buf_add(b, &addr))
2054 return (-1);
2055 } while ((n = n->next) != NULL);
2056
2057 return (0);
2058 }
2059
2060 int
pfctl_add_trans(struct pfr_buffer * buf,int rs_num,const char * anchor)2061 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor)
2062 {
2063 struct pfioc_trans_e trans;
2064
2065 bzero(&trans, sizeof(trans));
2066 trans.rs_num = rs_num;
2067 if (strlcpy(trans.anchor, anchor,
2068 sizeof(trans.anchor)) >= sizeof(trans.anchor))
2069 errx(1, "pfctl_add_trans: strlcpy");
2070
2071 return pfr_buf_add(buf, &trans);
2072 }
2073
2074 u_int32_t
pfctl_get_ticket(struct pfr_buffer * buf,int rs_num,const char * anchor)2075 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor)
2076 {
2077 struct pfioc_trans_e *p;
2078
2079 PFRB_FOREACH(p, buf)
2080 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor))
2081 return (p->ticket);
2082 errx(1, "pfctl_get_ticket: assertion failed");
2083 }
2084
2085 int
pfctl_trans(int dev,struct pfr_buffer * buf,u_long cmd,int from)2086 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
2087 {
2088 struct pfioc_trans trans;
2089
2090 bzero(&trans, sizeof(trans));
2091 trans.size = buf->pfrb_size - from;
2092 trans.esize = sizeof(struct pfioc_trans_e);
2093 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
2094 return ioctl(dev, cmd, &trans);
2095 }
2096