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mmap.2: Remove reference to no longer existing BUGS section.
[dragonfly.git] / usr.sbin / pfctl / pfctl_parser.c
blob083f73b6572d85d59820a70978cdc89f4adc988f
1 /* $OpenBSD: pfctl_parser.c,v 1.240 2008/06/10 20:55:02 mcbride Exp $ */
2
3 /*
4 * Copyright (c) 2001 Daniel Hartmeier
5 * Copyright (c) 2002,2003 Henning Brauer
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * - Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * - Redistributions in binary form must reproduce the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer in the documentation and/or other materials provided
17 * with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 */
33
34 #include <sys/user.h>
35 #include <sys/types.h>
36 #include <sys/ioctl.h>
37 #include <sys/socket.h>
38 #include <sys/param.h>
39 #include <net/if.h>
40 #include <netinet/in.h>
41 #include <netinet/in_systm.h>
42 #include <netinet/ip.h>
43 #include <netinet/ip_icmp.h>
44 #include <netinet/icmp6.h>
45 #include <net/pf/pfvar.h>
46 #include <arpa/inet.h>
47
48 #include <stdio.h>
49 #include <stdlib.h>
50 #include <string.h>
51 #include <ctype.h>
52 #include <netdb.h>
53 #include <stdarg.h>
54 #include <errno.h>
55 #include <err.h>
56 #include <ifaddrs.h>
57 #include <unistd.h>
58
59 #include "pfctl_parser.h"
60 #include "pfctl.h"
61
62 void print_op (u_int8_t, const char *, const char *);
63 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *);
64 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned);
65 void print_flags (u_int8_t);
66 void print_fromto(struct pf_rule_addr *, pf_osfp_t,
67 struct pf_rule_addr *, u_int8_t, u_int8_t, int);
68 int ifa_skip_if(const char *filter, struct node_host *p);
69
70 struct node_host *ifa_grouplookup(const char *, int);
71 struct node_host *host_if(const char *, int);
72 static struct node_host *host_v4(const char *);
73 struct node_host *host_v6(const char *, int);
74 struct node_host *host_dns(const char *, int, int);
75
76 const char *tcpflags = "FSRPAUEW";
77
78 static const struct icmptypeent icmp_type[] = {
79 { "echoreq", ICMP_ECHO },
80 { "echorep", ICMP_ECHOREPLY },
81 { "unreach", ICMP_UNREACH },
82 { "squench", ICMP_SOURCEQUENCH },
83 { "redir", ICMP_REDIRECT },
84 { "althost", ICMP_ALTHOSTADDR },
85 { "routeradv", ICMP_ROUTERADVERT },
86 { "routersol", ICMP_ROUTERSOLICIT },
87 { "timex", ICMP_TIMXCEED },
88 { "paramprob", ICMP_PARAMPROB },
89 { "timereq", ICMP_TSTAMP },
90 { "timerep", ICMP_TSTAMPREPLY },
91 { "inforeq", ICMP_IREQ },
92 { "inforep", ICMP_IREQREPLY },
93 { "maskreq", ICMP_MASKREQ },
94 { "maskrep", ICMP_MASKREPLY },
95 { "trace", ICMP_TRACEROUTE },
96 { "dataconv", ICMP_DATACONVERR },
97 { "mobredir", ICMP_MOBILE_REDIRECT },
98 { "ipv6-where", ICMP_IPV6_WHEREAREYOU },
99 { "ipv6-here", ICMP_IPV6_IAMHERE },
100 { "mobregreq", ICMP_MOBILE_REGREQUEST },
101 { "mobregrep", ICMP_MOBILE_REGREPLY },
102 { "skip", ICMP_SKIP },
103 { "photuris", ICMP_PHOTURIS }
104 };
105
106 static const struct icmptypeent icmp6_type[] = {
107 { "unreach", ICMP6_DST_UNREACH },
108 { "toobig", ICMP6_PACKET_TOO_BIG },
109 { "timex", ICMP6_TIME_EXCEEDED },
110 { "paramprob", ICMP6_PARAM_PROB },
111 { "echoreq", ICMP6_ECHO_REQUEST },
112 { "echorep", ICMP6_ECHO_REPLY },
113 { "groupqry", ICMP6_MEMBERSHIP_QUERY },
114 { "listqry", MLD_LISTENER_QUERY },
115 { "grouprep", ICMP6_MEMBERSHIP_REPORT },
116 { "listenrep", MLD_LISTENER_REPORT },
117 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION },
118 { "listendone", MLD_LISTENER_DONE },
119 { "routersol", ND_ROUTER_SOLICIT },
120 { "routeradv", ND_ROUTER_ADVERT },
121 { "neighbrsol", ND_NEIGHBOR_SOLICIT },
122 { "neighbradv", ND_NEIGHBOR_ADVERT },
123 { "redir", ND_REDIRECT },
124 { "routrrenum", ICMP6_ROUTER_RENUMBERING },
125 { "wrureq", ICMP6_WRUREQUEST },
126 { "wrurep", ICMP6_WRUREPLY },
127 { "fqdnreq", ICMP6_FQDN_QUERY },
128 { "fqdnrep", ICMP6_FQDN_REPLY },
129 { "niqry", ICMP6_NI_QUERY },
130 { "nirep", ICMP6_NI_REPLY },
131 { "mtraceresp", MLD_MTRACE_RESP },
132 { "mtrace", MLD_MTRACE }
133 };
134
135 static const struct icmpcodeent icmp_code[] = {
136 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET },
137 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST },
138 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL },
139 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT },
140 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG },
141 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL },
142 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN },
143 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN },
144 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED },
145 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB },
146 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB },
147 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET },
148 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST },
149 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB },
150 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE },
151 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF },
152 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET },
153 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST },
154 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET },
155 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST },
156 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL },
157 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON },
158 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS },
159 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS },
160 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR },
161 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT },
162 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH },
163 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX },
164 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED },
165 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED }
166 };
167
168 static const struct icmpcodeent icmp6_code[] = {
169 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN },
170 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE },
171 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR },
172 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE },
173 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR },
174 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT },
175 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT },
176 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY },
177 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER },
178 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER },
179 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK },
180 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER }
181 };
182
183 const struct pf_timeout pf_timeouts[] = {
184 { "tcp.first", PFTM_TCP_FIRST_PACKET },
185 { "tcp.opening", PFTM_TCP_OPENING },
186 { "tcp.established", PFTM_TCP_ESTABLISHED },
187 { "tcp.closing", PFTM_TCP_CLOSING },
188 { "tcp.finwait", PFTM_TCP_FIN_WAIT },
189 { "tcp.closed", PFTM_TCP_CLOSED },
190 { "tcp.tsdiff", PFTM_TS_DIFF },
191 { "udp.first", PFTM_UDP_FIRST_PACKET },
192 { "udp.single", PFTM_UDP_SINGLE },
193 { "udp.multiple", PFTM_UDP_MULTIPLE },
194 { "icmp.first", PFTM_ICMP_FIRST_PACKET },
195 { "icmp.error", PFTM_ICMP_ERROR_REPLY },
196 { "other.first", PFTM_OTHER_FIRST_PACKET },
197 { "other.single", PFTM_OTHER_SINGLE },
198 { "other.multiple", PFTM_OTHER_MULTIPLE },
199 { "frag", PFTM_FRAG },
200 { "interval", PFTM_INTERVAL },
201 { "adaptive.start", PFTM_ADAPTIVE_START },
202 { "adaptive.end", PFTM_ADAPTIVE_END },
203 { "src.track", PFTM_SRC_NODE },
204 { NULL, 0 }
205 };
206
207 const struct icmptypeent *
208 geticmptypebynumber(u_int8_t type, sa_family_t af)
209 {
210 unsigned int i;
211
212 if (af != AF_INET6) {
213 for (i=0; i < NELEM(icmp_type); i++) {
214 if (type == icmp_type[i].type)
215 return (&icmp_type[i]);
216 }
217 } else {
218 for (i=0; i < NELEM(icmp6_type); i++) {
219 if (type == icmp6_type[i].type)
220 return (&icmp6_type[i]);
221 }
222 }
223 return (NULL);
224 }
225
226 const struct icmptypeent *
227 geticmptypebyname(char *w, sa_family_t af)
228 {
229 unsigned int i;
230
231 if (af != AF_INET6) {
232 for (i=0; i < NELEM(icmp_type); i++) {
233 if (!strcmp(w, icmp_type[i].name))
234 return (&icmp_type[i]);
235 }
236 } else {
237 for (i=0; i < NELEM(icmp6_type); i++) {
238 if (!strcmp(w, icmp6_type[i].name))
239 return (&icmp6_type[i]);
240 }
241 }
242 return (NULL);
243 }
244
245 const struct icmpcodeent *
246 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af)
247 {
248 unsigned int i;
249
250 if (af != AF_INET6) {
251 for (i=0; i < NELEM(icmp_code); i++) {
252 if (type == icmp_code[i].type &&
253 code == icmp_code[i].code)
254 return (&icmp_code[i]);
255 }
256 } else {
257 for (i=0; i < NELEM(icmp6_code); i++) {
258 if (type == icmp6_code[i].type &&
259 code == icmp6_code[i].code)
260 return (&icmp6_code[i]);
261 }
262 }
263 return (NULL);
264 }
265
266 const struct icmpcodeent *
267 geticmpcodebyname(u_long type, char *w, sa_family_t af)
268 {
269 unsigned int i;
270
271 if (af != AF_INET6) {
272 for (i=0; i < NELEM(icmp_code); i++) {
273 if (type == icmp_code[i].type &&
274 !strcmp(w, icmp_code[i].name))
275 return (&icmp_code[i]);
276 }
277 } else {
278 for (i=0; i < NELEM(icmp6_code); i++) {
279 if (type == icmp6_code[i].type &&
280 !strcmp(w, icmp6_code[i].name))
281 return (&icmp6_code[i]);
282 }
283 }
284 return (NULL);
285 }
286
287 void
288 print_op(u_int8_t op, const char *a1, const char *a2)
289 {
290 if (op == PF_OP_IRG)
291 printf(" %s >< %s", a1, a2);
292 else if (op == PF_OP_XRG)
293 printf(" %s <> %s", a1, a2);
294 else if (op == PF_OP_EQ)
295 printf(" = %s", a1);
296 else if (op == PF_OP_NE)
297 printf(" != %s", a1);
298 else if (op == PF_OP_LT)
299 printf(" < %s", a1);
300 else if (op == PF_OP_LE)
301 printf(" <= %s", a1);
302 else if (op == PF_OP_GT)
303 printf(" > %s", a1);
304 else if (op == PF_OP_GE)
305 printf(" >= %s", a1);
306 else if (op == PF_OP_RRG)
307 printf(" %s:%s", a1, a2);
308 }
309
310 void
311 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto)
312 {
313 char a1[6], a2[6];
314 struct servent *s;
315
316 s = getservbyport(p1, proto);
317 p1 = ntohs(p1);
318 p2 = ntohs(p2);
319 snprintf(a1, sizeof(a1), "%u", p1);
320 snprintf(a2, sizeof(a2), "%u", p2);
321 printf(" port");
322 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE))
323 print_op(op, s->s_name, a2);
324 else
325 print_op(op, a1, a2);
326 }
327
328 void
329 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax)
330 {
331 char a1[11], a2[11];
332
333 snprintf(a1, sizeof(a1), "%u", u1);
334 snprintf(a2, sizeof(a2), "%u", u2);
335 printf(" %s", t);
336 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE))
337 print_op(op, "unknown", a2);
338 else
339 print_op(op, a1, a2);
340 }
341
342 void
343 print_flags(u_int8_t f)
344 {
345 int i;
346
347 for (i = 0; tcpflags[i]; ++i)
348 if (f & (1 << i))
349 printf("%c", tcpflags[i]);
350 }
351
352 void
353 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst,
354 sa_family_t af, u_int8_t proto, int verbose)
355 {
356 char buf[PF_OSFP_LEN*3];
357 if (src->addr.type == PF_ADDR_ADDRMASK &&
358 dst->addr.type == PF_ADDR_ADDRMASK &&
359 PF_AZERO(&src->addr.v.a.addr, AF_INET6) &&
360 PF_AZERO(&src->addr.v.a.mask, AF_INET6) &&
361 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) &&
362 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) &&
363 !src->neg && !dst->neg &&
364 !src->port_op && !dst->port_op &&
365 osfp == PF_OSFP_ANY)
366 printf(" all");
367 else {
368 printf(" from ");
369 if (src->neg)
370 printf("! ");
371 print_addr(&src->addr, af, verbose);
372 if (src->port_op)
373 print_port(src->port_op, src->port[0],
374 src->port[1],
375 proto == IPPROTO_TCP ? "tcp" : "udp");
376 if (osfp != PF_OSFP_ANY)
377 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf,
378 sizeof(buf)));
379
380 printf(" to ");
381 if (dst->neg)
382 printf("! ");
383 print_addr(&dst->addr, af, verbose);
384 if (dst->port_op)
385 print_port(dst->port_op, dst->port[0],
386 dst->port[1],
387 proto == IPPROTO_TCP ? "tcp" : "udp");
388 }
389 }
390
391 void
392 print_pool(struct pf_pool *pool, u_int16_t p1, u_int16_t p2,
393 sa_family_t af, int id)
394 {
395 struct pf_pooladdr *pooladdr;
396
397 if ((TAILQ_FIRST(&pool->list) != NULL) &&
398 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
399 printf("{ ");
400 TAILQ_FOREACH(pooladdr, &pool->list, entries){
401 switch (id) {
402 case PF_NAT:
403 case PF_RDR:
404 case PF_BINAT:
405 print_addr(&pooladdr->addr, af, 0);
406 break;
407 case PF_PASS:
408 if (PF_AZERO(&pooladdr->addr.v.a.addr, af))
409 printf("%s", pooladdr->ifname);
410 else {
411 printf("(%s ", pooladdr->ifname);
412 print_addr(&pooladdr->addr, af, 0);
413 printf(")");
414 }
415 break;
416 default:
417 break;
418 }
419 if (TAILQ_NEXT(pooladdr, entries) != NULL)
420 printf(", ");
421 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
422 printf(" }");
423 }
424 switch (id) {
425 case PF_NAT:
426 if ((p1 != PF_NAT_PROXY_PORT_LOW ||
427 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) {
428 if (p1 == p2)
429 printf(" port %u", p1);
430 else
431 printf(" port %u:%u", p1, p2);
432 }
433 break;
434 case PF_RDR:
435 if (p1) {
436 printf(" port %u", p1);
437 if (p2 && (p2 != p1))
438 printf(":%u", p2);
439 }
440 break;
441 default:
442 break;
443 }
444 switch (pool->opts & PF_POOL_TYPEMASK) {
445 case PF_POOL_NONE:
446 break;
447 case PF_POOL_BITMASK:
448 printf(" bitmask");
449 break;
450 case PF_POOL_RANDOM:
451 printf(" random");
452 break;
453 case PF_POOL_SRCHASH:
454 printf(" source-hash 0x%08x%08x%08x%08x",
455 pool->key.key32[0], pool->key.key32[1],
456 pool->key.key32[2], pool->key.key32[3]);
457 break;
458 case PF_POOL_ROUNDROBIN:
459 printf(" round-robin");
460 break;
461 }
462 if (pool->opts & PF_POOL_STICKYADDR)
463 printf(" sticky-address");
464 if (id == PF_NAT && p1 == 0 && p2 == 0)
465 printf(" static-port");
466 }
467
468 const char *pf_reasons[PFRES_MAX+1] = PFRES_NAMES;
469 const char *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES;
470 const char *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES;
471 const char *pf_scounters[FCNT_MAX+1] = FCNT_NAMES;
472
473 void
474 print_status(struct pf_status *s, int opts)
475 {
476 char statline[80];
477 const char *running;
478 time_t runtime;
479 int i;
480 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1];
481 static const char hex[] = "0123456789abcdef";
482
483 runtime = time(NULL) - s->since;
484 running = s->running ? "Enabled" : "Disabled";
485
486 if (s->since) {
487 unsigned int sec, min, hrs, day = runtime;
488
489 sec = day % 60;
490 day /= 60;
491 min = day % 60;
492 day /= 60;
493 hrs = day % 24;
494 day /= 24;
495 snprintf(statline, sizeof(statline),
496 "Status: %s for %u days %.2u:%.2u:%.2u",
497 running, day, hrs, min, sec);
498 } else
499 snprintf(statline, sizeof(statline), "Status: %s", running);
500 printf("%-44s", statline);
501 switch (s->debug) {
502 case PF_DEBUG_NONE:
503 printf("%15s\n\n", "Debug: None");
504 break;
505 case PF_DEBUG_URGENT:
506 printf("%15s\n\n", "Debug: Urgent");
507 break;
508 case PF_DEBUG_MISC:
509 printf("%15s\n\n", "Debug: Misc");
510 break;
511 case PF_DEBUG_NOISY:
512 printf("%15s\n\n", "Debug: Loud");
513 break;
514 }
515
516 if (opts & PF_OPT_VERBOSE) {
517 printf("Hostid: 0x%08x\n", ntohl(s->hostid));
518
519 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) {
520 buf[i + i] = hex[s->pf_chksum[i] >> 4];
521 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f];
522 }
523 buf[i + i] = '\0';
524 printf("Checksum: 0x%s\n\n", buf);
525 }
526
527 if (s->ifname[0] != 0) {
528 printf("Interface Stats for %-16s %5s %16s\n",
529 s->ifname, "IPv4", "IPv6");
530 printf(" %-25s %14llu %16llu\n", "Bytes In",
531 (unsigned long long)s->bcounters[0][0],
532 (unsigned long long)s->bcounters[1][0]);
533 printf(" %-25s %14llu %16llu\n", "Bytes Out",
534 (unsigned long long)s->bcounters[0][1],
535 (unsigned long long)s->bcounters[1][1]);
536 printf(" Packets In\n");
537 printf(" %-23s %14llu %16llu\n", "Passed",
538 (unsigned long long)s->pcounters[0][0][PF_PASS],
539 (unsigned long long)s->pcounters[1][0][PF_PASS]);
540 printf(" %-23s %14llu %16llu\n", "Blocked",
541 (unsigned long long)s->pcounters[0][0][PF_DROP],
542 (unsigned long long)s->pcounters[1][0][PF_DROP]);
543 printf(" Packets Out\n");
544 printf(" %-23s %14llu %16llu\n", "Passed",
545 (unsigned long long)s->pcounters[0][1][PF_PASS],
546 (unsigned long long)s->pcounters[1][1][PF_PASS]);
547 printf(" %-23s %14llu %16llu\n\n", "Blocked",
548 (unsigned long long)s->pcounters[0][1][PF_DROP],
549 (unsigned long long)s->pcounters[1][1][PF_DROP]);
550 }
551 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
552 printf(" %-25s %14u %14s\n", "current entries", s->states, "");
553 for (i = 0; i < FCNT_MAX; i++) {
554 printf(" %-25s %14llu ", pf_fcounters[i],
555 (unsigned long long)s->fcounters[i]);
556 if (runtime > 0)
557 printf("%14.1f/s\n",
558 (double)s->fcounters[i] / (double)runtime);
559 else
560 printf("%14s\n", "");
561 }
562 if (opts & PF_OPT_VERBOSE) {
563 printf("Source Tracking Table\n");
564 printf(" %-25s %14u %14s\n", "current entries",
565 s->src_nodes, "");
566 for (i = 0; i < SCNT_MAX; i++) {
567 printf(" %-25s %14lld ", pf_scounters[i],
568 (unsigned long long)s->scounters[i]);
569 if (runtime > 0)
570 printf("%14.1f/s\n",
571 (double)s->scounters[i] / (double)runtime);
572 else
573 printf("%14s\n", "");
574 }
575 }
576 printf("Counters\n");
577 for (i = 0; i < PFRES_MAX; i++) {
578 printf(" %-25s %14llu ", pf_reasons[i],
579 (unsigned long long)s->counters[i]);
580 if (runtime > 0)
581 printf("%14.1f/s\n",
582 (double)s->counters[i] / (double)runtime);
583 else
584 printf("%14s\n", "");
585 }
586 if (opts & PF_OPT_VERBOSE) {
587 printf("Limit Counters\n");
588 for (i = 0; i < LCNT_MAX; i++) {
589 printf(" %-25s %14ju ", pf_lcounters[i],
590 (uintmax_t)s->lcounters[i]);
591 if (runtime > 0)
592 printf("%14.1f/s\n",
593 (double)s->lcounters[i] / (double)runtime);
594 else
595 printf("%14s\n", "");
596 }
597 }
598 }
599
600 void
601 print_src_node(struct pf_src_node *sn, int opts)
602 {
603 struct pf_addr_wrap aw;
604 int min, sec;
605
606 memset(&aw, 0, sizeof(aw));
607 if (sn->af == AF_INET)
608 aw.v.a.mask.addr32[0] = 0xffffffff;
609 else
610 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
611
612 aw.v.a.addr = sn->addr;
613 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
614 printf(" -> ");
615 aw.v.a.addr = sn->raddr;
616 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
617 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states,
618 sn->conn, sn->conn_rate.count / 1000,
619 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds);
620 if (opts & PF_OPT_VERBOSE) {
621 sec = sn->creation % 60;
622 sn->creation /= 60;
623 min = sn->creation % 60;
624 sn->creation /= 60;
625 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec);
626 if (sn->states == 0) {
627 sec = sn->expire % 60;
628 sn->expire /= 60;
629 min = sn->expire % 60;
630 sn->expire /= 60;
631 printf(", expires in %.2u:%.2u:%.2u",
632 sn->expire, min, sec);
633 }
634 printf(", %ju pkts, %ju bytes",
635 (uintmax_t)sn->packets[0] + sn->packets[1],
636 (uintmax_t)sn->bytes[0] + sn->bytes[1]);
637 switch (sn->ruletype) {
638 case PF_NAT:
639 if (sn->rule.nr != (uint32_t)(-1))
640 printf(", nat rule %u", sn->rule.nr);
641 break;
642 case PF_RDR:
643 if (sn->rule.nr != (uint32_t)(-1))
644 printf(", rdr rule %u", sn->rule.nr);
645 break;
646 case PF_PASS:
647 if (sn->rule.nr != (uint32_t)(-1))
648 printf(", filter rule %u", sn->rule.nr);
649 break;
650 }
651 printf("\n");
652 }
653 }
654
655 void
656 print_rule(struct pf_rule *r, const char *anchor_call, int verbose)
657 {
658 static const char *actiontypes[] = { "pass", "block", "scrub",
659 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" };
660 static const char *anchortypes[] = { "anchor", "anchor", "anchor",
661 "anchor", "nat-anchor", "nat-anchor", "binat-anchor",
662 "binat-anchor", "rdr-anchor", "rdr-anchor" };
663 int i, opts;
664
665 if (verbose)
666 printf("@%d ", r->nr);
667 if (r->action > PF_NORDR)
668 printf("action(%d)", r->action);
669 else if (anchor_call[0]) {
670 if (anchor_call[0] == '_') {
671 printf("%s", anchortypes[r->action]);
672 } else
673 printf("%s \"%s\"", anchortypes[r->action],
674 anchor_call);
675 } else {
676 printf("%s", actiontypes[r->action]);
677 if (r->natpass)
678 printf(" pass");
679 }
680 if (r->action == PF_DROP) {
681 if (r->rule_flag & PFRULE_RETURN)
682 printf(" return");
683 else if (r->rule_flag & PFRULE_RETURNRST) {
684 if (!r->return_ttl)
685 printf(" return-rst");
686 else
687 printf(" return-rst(ttl %d)", r->return_ttl);
688 } else if (r->rule_flag & PFRULE_RETURNICMP) {
689 const struct icmpcodeent *ic, *ic6;
690
691 ic = geticmpcodebynumber(r->return_icmp >> 8,
692 r->return_icmp & 255, AF_INET);
693 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
694 r->return_icmp6 & 255, AF_INET6);
695
696 switch (r->af) {
697 case AF_INET:
698 printf(" return-icmp");
699 if (ic == NULL)
700 printf("(%u)", r->return_icmp & 255);
701 else
702 printf("(%s)", ic->name);
703 break;
704 case AF_INET6:
705 printf(" return-icmp6");
706 if (ic6 == NULL)
707 printf("(%u)", r->return_icmp6 & 255);
708 else
709 printf("(%s)", ic6->name);
710 break;
711 default:
712 printf(" return-icmp");
713 if (ic == NULL)
714 printf("(%u, ", r->return_icmp & 255);
715 else
716 printf("(%s, ", ic->name);
717 if (ic6 == NULL)
718 printf("%u)", r->return_icmp6 & 255);
719 else
720 printf("%s)", ic6->name);
721 break;
722 }
723 } else
724 printf(" drop");
725 }
726 if (r->direction == PF_IN)
727 printf(" in");
728 else if (r->direction == PF_OUT)
729 printf(" out");
730 if (r->log) {
731 printf(" log");
732 if (r->log & ~PF_LOG || r->logif) {
733 int count = 0;
734
735 printf(" (");
736 if (r->log & PF_LOG_ALL)
737 printf("%sall", count++ ? ", " : "");
738 if (r->log & PF_LOG_SOCKET_LOOKUP)
739 printf("%suser", count++ ? ", " : "");
740 if (r->logif)
741 printf("%sto pflog%u", count++ ? ", " : "",
742 r->logif);
743 printf(")");
744 }
745 }
746 if (r->quick)
747 printf(" quick");
748 if (r->ifname[0]) {
749 if (r->ifnot)
750 printf(" on ! %s", r->ifname);
751 else
752 printf(" on %s", r->ifname);
753 }
754 if (r->rt) {
755 if (r->rt == PF_ROUTETO)
756 printf(" route-to");
757 else if (r->rt == PF_REPLYTO)
758 printf(" reply-to");
759 else if (r->rt == PF_DUPTO)
760 printf(" dup-to");
761 else if (r->rt == PF_FASTROUTE)
762 printf(" fastroute");
763 if (r->rt != PF_FASTROUTE) {
764 printf(" ");
765 print_pool(&r->rpool, 0, 0, r->af, PF_PASS);
766 }
767 }
768 if (r->af) {
769 if (r->af == AF_INET)
770 printf(" inet");
771 else
772 printf(" inet6");
773 }
774 if (r->proto) {
775 struct protoent *p;
776
777 if ((p = getprotobynumber(r->proto)) != NULL)
778 printf(" proto %s", p->p_name);
779 else
780 printf(" proto %u", r->proto);
781 }
782 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto,
783 verbose);
784 if (r->uid.op)
785 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user",
786 UID_MAX);
787 if (r->gid.op)
788 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group",
789 GID_MAX);
790 if (r->flags || r->flagset) {
791 printf(" flags ");
792 print_flags(r->flags);
793 printf("/");
794 print_flags(r->flagset);
795 } else if (r->action == PF_PASS &&
796 (!r->proto || r->proto == IPPROTO_TCP) &&
797 !(r->rule_flag & PFRULE_FRAGMENT) &&
798 !anchor_call[0] && r->keep_state)
799 printf(" flags any");
800 if (r->type) {
801 const struct icmptypeent *it;
802
803 it = geticmptypebynumber(r->type-1, r->af);
804 if (r->af != AF_INET6)
805 printf(" icmp-type");
806 else
807 printf(" icmp6-type");
808 if (it != NULL)
809 printf(" %s", it->name);
810 else
811 printf(" %u", r->type-1);
812 if (r->code) {
813 const struct icmpcodeent *ic;
814
815 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
816 if (ic != NULL)
817 printf(" code %s", ic->name);
818 else
819 printf(" code %u", r->code-1);
820 }
821 }
822 if (r->tos)
823 printf(" tos 0x%2.2x", r->tos);
824 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0])
825 printf(" no state");
826 else if (r->keep_state == PF_STATE_NORMAL)
827 printf(" keep state");
828 else if (r->keep_state == PF_STATE_MODULATE)
829 printf(" modulate state");
830 else if (r->keep_state == PF_STATE_SYNPROXY)
831 printf(" synproxy state");
832 if (r->prob) {
833 char buf[20];
834
835 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
836 for (i = strlen(buf)-1; i > 0; i--) {
837 if (buf[i] == '0')
838 buf[i] = '\0';
839 else {
840 if (buf[i] == '.')
841 buf[i] = '\0';
842 break;
843 }
844 }
845 printf(" probability %s%%", buf);
846 }
847 opts = 0;
848 if (r->max_states || r->max_src_nodes || r->max_src_states)
849 opts = 1;
850 if (r->pickup_mode)
851 opts = 1;
852 if (r->rule_flag & PFRULE_NOSYNC)
853 opts = 1;
854 if (r->rule_flag & PFRULE_SRCTRACK)
855 opts = 1;
856 if (r->rule_flag & PFRULE_IFBOUND)
857 opts = 1;
858 if (r->rule_flag & PFRULE_STATESLOPPY)
859 opts = 1;
860 for (i = 0; !opts && i < PFTM_MAX; ++i)
861 if (r->timeout[i])
862 opts = 1;
863 if (opts) {
864 printf(" (");
865 switch(r->pickup_mode) {
866 case PF_PICKUPS_UNSPECIFIED:
867 break;
868 case PF_PICKUPS_DISABLED:
869 printf("no-pickups");
870 opts = 0;
871 break;
872 case PF_PICKUPS_HASHONLY:
873 printf("hash-only");
874 opts = 0;
875 break;
876 case PF_PICKUPS_ENABLED:
877 printf("pickups");
878 opts = 0;
879 break;
880 default:
881 printf("unknown-pickups-mode-%d", r->pickup_mode);
882 break;
883 }
884 if (r->max_states) {
885 if (!opts)
886 printf(", ");
887 printf("max %u", r->max_states);
888 opts = 0;
889 }
890 if (r->rule_flag & PFRULE_NOSYNC) {
891 if (!opts)
892 printf(", ");
893 printf("no-sync");
894 opts = 0;
895 }
896 if (r->rule_flag & PFRULE_SRCTRACK) {
897 if (!opts)
898 printf(", ");
899 printf("source-track");
900 if (r->rule_flag & PFRULE_RULESRCTRACK)
901 printf(" rule");
902 else
903 printf(" global");
904 opts = 0;
905 }
906 if (r->max_src_states) {
907 if (!opts)
908 printf(", ");
909 printf("max-src-states %u", r->max_src_states);
910 opts = 0;
911 }
912 if (r->max_src_conn) {
913 if (!opts)
914 printf(", ");
915 printf("max-src-conn %u", r->max_src_conn);
916 opts = 0;
917 }
918 if (r->max_src_conn_rate.limit) {
919 if (!opts)
920 printf(", ");
921 printf("max-src-conn-rate %u/%u",
922 r->max_src_conn_rate.limit,
923 r->max_src_conn_rate.seconds);
924 opts = 0;
925 }
926 if (r->max_src_nodes) {
927 if (!opts)
928 printf(", ");
929 printf("max-src-nodes %u", r->max_src_nodes);
930 opts = 0;
931 }
932 if (r->overload_tblname[0]) {
933 if (!opts)
934 printf(", ");
935 printf("overload <%s>", r->overload_tblname);
936 if (r->flush)
937 printf(" flush");
938 if (r->flush & PF_FLUSH_GLOBAL)
939 printf(" global");
940 }
941 if (r->rule_flag & PFRULE_IFBOUND) {
942 if (!opts)
943 printf(", ");
944 printf("if-bound");
945 opts = 0;
946 }
947 if (r->rule_flag & PFRULE_STATESLOPPY) {
948 if (!opts)
949 printf(", ");
950 printf("sloppy");
951 opts = 0;
952 }
953 for (i = 0; i < PFTM_MAX; ++i)
954 if (r->timeout[i]) {
955 int j;
956
957 if (!opts)
958 printf(", ");
959 opts = 0;
960 for (j = 0; pf_timeouts[j].name != NULL;
961 ++j)
962 if (pf_timeouts[j].timeout == i)
963 break;
964 printf("%s %u", pf_timeouts[j].name == NULL ?
965 "inv.timeout" : pf_timeouts[j].name,
966 r->timeout[i]);
967 }
968 printf(")");
969 }
970 if (r->rule_flag & PFRULE_FRAGMENT)
971 printf(" fragment");
972 if (r->rule_flag & PFRULE_NODF)
973 printf(" no-df");
974 if (r->rule_flag & PFRULE_RANDOMID)
975 printf(" random-id");
976 if (r->min_ttl)
977 printf(" min-ttl %d", r->min_ttl);
978 if (r->max_mss)
979 printf(" max-mss %d", r->max_mss);
980 if (r->rule_flag & PFRULE_SET_TOS)
981 printf(" set-tos 0x%2.2x", r->set_tos);
982 if (r->allow_opts)
983 printf(" allow-opts");
984 if (r->action == PF_SCRUB) {
985 if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
986 printf(" reassemble tcp");
987
988 if (r->rule_flag & PFRULE_FRAGDROP)
989 printf(" fragment drop-ovl");
990 else if (r->rule_flag & PFRULE_FRAGCROP)
991 printf(" fragment crop");
992 else
993 printf(" fragment reassemble");
994 }
995 if (r->label[0])
996 printf(" label \"%s\"", r->label);
997 if (r->qname[0] && r->pqname[0])
998 printf(" queue(%s, %s)", r->qname, r->pqname);
999 else if (r->qname[0])
1000 printf(" queue %s", r->qname);
1001 if (r->tagname[0])
1002 printf(" tag %s", r->tagname);
1003 if (r->match_tagname[0]) {
1004 if (r->match_tag_not)
1005 printf(" !");
1006 printf(" tagged %s", r->match_tagname);
1007 }
1008 if (r->rtableid != -1)
1009 printf(" rtable %u", r->rtableid);
1010 if (r->divert.port) {
1011 if (PF_AZERO(&r->divert.addr, r->af)) {
1012 printf(" divert-reply");
1013 } else {
1014 /* XXX cut&paste from print_addr */
1015 char buf[48];
1016
1017 printf(" divert-to ");
1018 if (inet_ntop(r->af, &r->divert.addr, buf,
1019 sizeof(buf)) == NULL)
1020 printf("?");
1021 else
1022 printf("%s", buf);
1023 printf(" port %u", ntohs(r->divert.port));
1024 }
1025 }
1026 if (!anchor_call[0] && (r->action == PF_NAT ||
1027 r->action == PF_BINAT || r->action == PF_RDR)) {
1028 printf(" -> ");
1029 print_pool(&r->rpool, r->rpool.proxy_port[0],
1030 r->rpool.proxy_port[1], r->af, r->action);
1031 }
1032 }
1033
1034 void
1035 print_tabledef(const char *name, int flags, int addrs,
1036 struct node_tinithead *nodes)
1037 {
1038 struct node_tinit *ti, *nti;
1039 struct node_host *h;
1040
1041 printf("table <%s>", name);
1042 if (flags & PFR_TFLAG_CONST)
1043 printf(" const");
1044 if (flags & PFR_TFLAG_PERSIST)
1045 printf(" persist");
1046 if (flags & PFR_TFLAG_COUNTERS)
1047 printf(" counters");
1048 SIMPLEQ_FOREACH(ti, nodes, entries) {
1049 if (ti->file) {
1050 printf(" file \"%s\"", ti->file);
1051 continue;
1052 }
1053 printf(" {");
1054 for (;;) {
1055 for (h = ti->host; h != NULL; h = h->next) {
1056 printf(h->not ? " !" : " ");
1057 print_addr(&h->addr, h->af, 0);
1058 }
1059 nti = SIMPLEQ_NEXT(ti, entries);
1060 if (nti != NULL && nti->file == NULL)
1061 ti = nti; /* merge lists */
1062 else
1063 break;
1064 }
1065 printf(" }");
1066 }
1067 if (addrs && SIMPLEQ_EMPTY(nodes))
1068 printf(" { }");
1069 printf("\n");
1070 }
1071
1072 int
1073 parse_flags(const char *s)
1074 {
1075 const char *p, *q;
1076 u_int8_t f = 0;
1077
1078 for (p = s; *p; p++) {
1079 if ((q = strchr(tcpflags, *p)) == NULL)
1080 return -1;
1081 else
1082 f |= 1 << (q - tcpflags);
1083 }
1084 return (f ? f : PF_TH_ALL);
1085 }
1086
1087 void
1088 set_ipmask(struct node_host *h, u_int8_t b)
1089 {
1090 struct pf_addr *m, *n;
1091 int i, j = 0;
1092
1093 m = &h->addr.v.a.mask;
1094 memset(m, 0, sizeof(*m));
1095
1096 while (b >= 32) {
1097 m->addr32[j++] = 0xffffffff;
1098 b -= 32;
1099 }
1100 for (i = 31; i > 31-b; --i)
1101 m->addr32[j] |= (1 << i);
1102 if (b)
1103 m->addr32[j] = htonl(m->addr32[j]);
1104
1105 /* Mask off bits of the address that will never be used. */
1106 n = &h->addr.v.a.addr;
1107 if (h->addr.type == PF_ADDR_ADDRMASK)
1108 for (i = 0; i < 4; i++)
1109 n->addr32[i] = n->addr32[i] & m->addr32[i];
1110 }
1111
1112 int
1113 check_netmask(struct node_host *h, sa_family_t af)
1114 {
1115 struct node_host *n = NULL;
1116 struct pf_addr *m;
1117
1118 for (n = h; n != NULL; n = n->next) {
1119 if (h->addr.type == PF_ADDR_TABLE)
1120 continue;
1121 m = &h->addr.v.a.mask;
1122 /* fix up netmask for dynaddr */
1123 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL &&
1124 unmask(m, AF_INET6) > 32)
1125 set_ipmask(n, 32);
1126 /* netmasks > 32 bit are invalid on v4 */
1127 if (af == AF_INET &&
1128 (m->addr32[1] || m->addr32[2] || m->addr32[3])) {
1129 fprintf(stderr, "netmask %u invalid for IPv4 address\n",
1130 unmask(m, AF_INET6));
1131 return (1);
1132 }
1133 }
1134 return (0);
1135 }
1136
1137 /* interface lookup routines */
1138
1139 struct node_host *iftab;
1140
1141 void
1142 ifa_load(void)
1143 {
1144 struct ifaddrs *ifap, *ifa;
1145 struct node_host *n = NULL, *h = NULL;
1146
1147 if (getifaddrs(&ifap) < 0)
1148 err(1, "getifaddrs");
1149
1150 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1151 if (!(ifa->ifa_addr->sa_family == AF_INET ||
1152 ifa->ifa_addr->sa_family == AF_INET6 ||
1153 ifa->ifa_addr->sa_family == AF_LINK))
1154 continue;
1155 n = calloc(1, sizeof(struct node_host));
1156 if (n == NULL)
1157 err(1, "address: calloc");
1158 n->af = ifa->ifa_addr->sa_family;
1159 n->ifa_flags = ifa->ifa_flags;
1160 #ifdef __KAME__
1161 if (n->af == AF_INET6 &&
1162 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
1163 ifa->ifa_addr)->sin6_addr) &&
1164 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
1165 0) {
1166 struct sockaddr_in6 *sin6;
1167
1168 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1169 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
1170 sin6->sin6_addr.s6_addr[3];
1171 sin6->sin6_addr.s6_addr[2] = 0;
1172 sin6->sin6_addr.s6_addr[3] = 0;
1173 }
1174 #endif
1175 n->ifindex = 0;
1176 if (n->af == AF_INET) {
1177 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *)
1178 ifa->ifa_addr)->sin_addr.s_addr,
1179 sizeof(struct in_addr));
1180 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *)
1181 ifa->ifa_netmask)->sin_addr.s_addr,
1182 sizeof(struct in_addr));
1183 if (ifa->ifa_broadaddr != NULL)
1184 memcpy(&n->bcast, &((struct sockaddr_in *)
1185 ifa->ifa_broadaddr)->sin_addr.s_addr,
1186 sizeof(struct in_addr));
1187 if (ifa->ifa_dstaddr != NULL)
1188 memcpy(&n->peer, &((struct sockaddr_in *)
1189 ifa->ifa_dstaddr)->sin_addr.s_addr,
1190 sizeof(struct in_addr));
1191 } else if (n->af == AF_INET6) {
1192 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *)
1193 ifa->ifa_addr)->sin6_addr.s6_addr,
1194 sizeof(struct in6_addr));
1195 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *)
1196 ifa->ifa_netmask)->sin6_addr.s6_addr,
1197 sizeof(struct in6_addr));
1198 if (ifa->ifa_broadaddr != NULL)
1199 memcpy(&n->bcast, &((struct sockaddr_in6 *)
1200 ifa->ifa_broadaddr)->sin6_addr.s6_addr,
1201 sizeof(struct in6_addr));
1202 if (ifa->ifa_dstaddr != NULL)
1203 memcpy(&n->peer, &((struct sockaddr_in6 *)
1204 ifa->ifa_dstaddr)->sin6_addr.s6_addr,
1205 sizeof(struct in6_addr));
1206 n->ifindex = ((struct sockaddr_in6 *)
1207 ifa->ifa_addr)->sin6_scope_id;
1208 }
1209 if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
1210 err(1, "ifa_load: strdup");
1211 n->next = NULL;
1212 n->tail = n;
1213 if (h == NULL)
1214 h = n;
1215 else {
1216 h->tail->next = n;
1217 h->tail = n;
1218 }
1219 }
1220
1221 iftab = h;
1222 freeifaddrs(ifap);
1223 }
1224
1225 struct node_host *
1226 ifa_exists(const char *ifa_name)
1227 {
1228 struct node_host *n;
1229 struct ifgroupreq ifgr;
1230 int s;
1231
1232 if (iftab == NULL)
1233 ifa_load();
1234
1235 /* check wether this is a group */
1236 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
1237 err(1, "socket");
1238 bzero(&ifgr, sizeof(ifgr));
1239 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
1240 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == 0) {
1241 /* fake a node_host */
1242 if ((n = calloc(1, sizeof(*n))) == NULL)
1243 err(1, "calloc");
1244 if ((n->ifname = strdup(ifa_name)) == NULL)
1245 err(1, "strdup");
1246 close(s);
1247 return (n);
1248 }
1249 close(s);
1250
1251 for (n = iftab; n; n = n->next) {
1252 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
1253 return (n);
1254 }
1255
1256 return (NULL);
1257 }
1258
1259 struct node_host *
1260 ifa_grouplookup(const char *ifa_name, int flags)
1261 {
1262 struct ifg_req *ifg;
1263 struct ifgroupreq ifgr;
1264 int s;
1265 size_t len;
1266 struct node_host *n, *h = NULL;
1267
1268 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
1269 err(1, "socket");
1270 bzero(&ifgr, sizeof(ifgr));
1271 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
1272 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) {
1273 close(s);
1274 return (NULL);
1275 }
1276
1277 len = ifgr.ifgr_len;
1278 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
1279 err(1, "calloc");
1280 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
1281 err(1, "SIOCGIFGMEMB");
1282
1283 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req);
1284 ifg++) {
1285 len -= sizeof(struct ifg_req);
1286 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL)
1287 continue;
1288 if (h == NULL)
1289 h = n;
1290 else {
1291 h->tail->next = n;
1292 h->tail = n->tail;
1293 }
1294 }
1295 free(ifgr.ifgr_groups);
1296 close(s);
1297
1298 return (h);
1299 }
1300
1301 struct node_host *
1302 ifa_lookup(const char *ifa_name, int flags)
1303 {
1304 struct node_host *p = NULL, *h = NULL, *n = NULL;
1305 int got4 = 0, got6 = 0;
1306 const char *last_if = NULL;
1307
1308 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL)
1309 return (h);
1310
1311 if (!strncmp(ifa_name, "self", IFNAMSIZ))
1312 ifa_name = NULL;
1313
1314 if (iftab == NULL)
1315 ifa_load();
1316
1317 for (p = iftab; p; p = p->next) {
1318 if (ifa_skip_if(ifa_name, p))
1319 continue;
1320 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
1321 continue;
1322 if ((flags & PFI_AFLAG_BROADCAST) &&
1323 !(p->ifa_flags & IFF_BROADCAST))
1324 continue;
1325 if ((flags & PFI_AFLAG_PEER) &&
1326 !(p->ifa_flags & IFF_POINTOPOINT))
1327 continue;
1328 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
1329 continue;
1330 if (last_if == NULL || strcmp(last_if, p->ifname))
1331 got4 = got6 = 0;
1332 last_if = p->ifname;
1333 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
1334 continue;
1335 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
1336 continue;
1337 if (p->af == AF_INET)
1338 got4 = 1;
1339 else
1340 got6 = 1;
1341 n = calloc(1, sizeof(struct node_host));
1342 if (n == NULL)
1343 err(1, "address: calloc");
1344 n->af = p->af;
1345 if (flags & PFI_AFLAG_BROADCAST)
1346 memcpy(&n->addr.v.a.addr, &p->bcast,
1347 sizeof(struct pf_addr));
1348 else if (flags & PFI_AFLAG_PEER)
1349 memcpy(&n->addr.v.a.addr, &p->peer,
1350 sizeof(struct pf_addr));
1351 else
1352 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
1353 sizeof(struct pf_addr));
1354 if (flags & PFI_AFLAG_NETWORK)
1355 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af));
1356 else {
1357 if (n->af == AF_INET) {
1358 if (p->ifa_flags & IFF_LOOPBACK &&
1359 p->ifa_flags & IFF_LINK1)
1360 memcpy(&n->addr.v.a.mask,
1361 &p->addr.v.a.mask,
1362 sizeof(struct pf_addr));
1363 else
1364 set_ipmask(n, 32);
1365 } else
1366 set_ipmask(n, 128);
1367 }
1368 n->ifindex = p->ifindex;
1369
1370 n->next = NULL;
1371 n->tail = n;
1372 if (h == NULL)
1373 h = n;
1374 else {
1375 h->tail->next = n;
1376 h->tail = n;
1377 }
1378 }
1379 return (h);
1380 }
1381
1382 int
1383 ifa_skip_if(const char *filter, struct node_host *p)
1384 {
1385 int n;
1386
1387 if (p->af != AF_INET && p->af != AF_INET6)
1388 return (1);
1389 if (filter == NULL || !*filter)
1390 return (0);
1391 if (!strcmp(p->ifname, filter))
1392 return (0); /* exact match */
1393 n = strlen(filter);
1394 if (n < 1 || n >= IFNAMSIZ)
1395 return (1); /* sanity check */
1396 if (filter[n-1] >= '0' && filter[n-1] <= '9')
1397 return (1); /* only do exact match in that case */
1398 if (strncmp(p->ifname, filter, n))
1399 return (1); /* prefix doesn't match */
1400 return (p->ifname[n] < '0' || p->ifname[n] > '9');
1401 }
1402
1403
1404 struct node_host *
1405 host(const char *s)
1406 {
1407 struct node_host *h = NULL;
1408 int mask, v4mask, v6mask, cont = 1;
1409 char *p, *q, *ps;
1410
1411 if ((p = strrchr(s, '/')) != NULL) {
1412 mask = strtol(p+1, &q, 0);
1413 if (!q || *q || mask > 128 || q == (p+1)) {
1414 fprintf(stderr, "invalid netmask '%s'\n", p);
1415 return (NULL);
1416 }
1417 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
1418 err(1, "host: malloc");
1419 strlcpy(ps, s, strlen(s) - strlen(p) + 1);
1420 v4mask = v6mask = mask;
1421 } else {
1422 if ((ps = strdup(s)) == NULL)
1423 err(1, "host: strdup");
1424 v4mask = 32;
1425 v6mask = 128;
1426 mask = -1;
1427 }
1428
1429 /* interface with this name exists? */
1430 if (cont && (h = host_if(ps, mask)) != NULL)
1431 cont = 0;
1432
1433 /* IPv4 address? */
1434 if (cont && (h = host_v4(s)) != NULL)
1435 cont = 0;
1436
1437 /* IPv6 address? */
1438 if (cont && (h = host_v6(ps, v6mask)) != NULL)
1439 cont = 0;
1440
1441 /* dns lookup */
1442 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL)
1443 cont = 0;
1444 free(ps);
1445
1446 if (h == NULL || cont == 1) {
1447 fprintf(stderr, "no IP address found for %s\n", s);
1448 return (NULL);
1449 }
1450 return (h);
1451 }
1452
1453 struct node_host *
1454 host_if(const char *s, int mask)
1455 {
1456 struct node_host *n, *h = NULL;
1457 char *p, *ps;
1458 int flags = 0;
1459
1460 if ((ps = strdup(s)) == NULL)
1461 err(1, "host_if: strdup");
1462 while ((p = strrchr(ps, ':')) != NULL) {
1463 if (!strcmp(p+1, "network"))
1464 flags |= PFI_AFLAG_NETWORK;
1465 else if (!strcmp(p+1, "broadcast"))
1466 flags |= PFI_AFLAG_BROADCAST;
1467 else if (!strcmp(p+1, "peer"))
1468 flags |= PFI_AFLAG_PEER;
1469 else if (!strcmp(p+1, "0"))
1470 flags |= PFI_AFLAG_NOALIAS;
1471 else {
1472 free(ps);
1473 return (NULL);
1474 }
1475 *p = '\0';
1476 }
1477 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
1478 fprintf(stderr, "illegal combination of interface modifiers\n");
1479 free(ps);
1480 return (NULL);
1481 }
1482 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
1483 fprintf(stderr, "network or broadcast lookup, but "
1484 "extra netmask given\n");
1485 free(ps);
1486 return (NULL);
1487 }
1488 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) {
1489 /* interface with this name exists */
1490 h = ifa_lookup(ps, flags);
1491 for (n = h; n != NULL && mask > -1; n = n->next)
1492 set_ipmask(n, mask);
1493 }
1494
1495 free(ps);
1496 return (h);
1497 }
1498
1499 static struct node_host *
1500 host_v4(const char *s)
1501 {
1502 struct node_host *h = NULL;
1503 struct in_addr ina;
1504 int bits = 32;
1505
1506 memset(&ina, 0, sizeof(struct in_addr));
1507 if (strrchr(s, '/') != NULL) {
1508 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1)
1509 return (NULL);
1510 } else {
1511 if (inet_pton(AF_INET, s, &ina) != 1)
1512 return (NULL);
1513 }
1514
1515 h = calloc(1, sizeof(struct node_host));
1516 if (h == NULL)
1517 err(1, "address: calloc");
1518 h->ifname = NULL;
1519 h->af = AF_INET;
1520 h->addr.v.a.addr.addr32[0] = ina.s_addr;
1521 set_ipmask(h, bits);
1522 h->next = NULL;
1523 h->tail = h;
1524
1525 return (h);
1526 }
1527
1528 struct node_host *
1529 host_v6(const char *s, int mask)
1530 {
1531 struct addrinfo hints, *res;
1532 struct node_host *h = NULL;
1533
1534 memset(&hints, 0, sizeof(hints));
1535 hints.ai_family = AF_INET6;
1536 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1537 hints.ai_flags = AI_NUMERICHOST;
1538 if (getaddrinfo(s, "0", &hints, &res) == 0) {
1539 h = calloc(1, sizeof(struct node_host));
1540 if (h == NULL)
1541 err(1, "address: calloc");
1542 h->ifname = NULL;
1543 h->af = AF_INET6;
1544 memcpy(&h->addr.v.a.addr,
1545 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
1546 sizeof(h->addr.v.a.addr));
1547 h->ifindex =
1548 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1549 set_ipmask(h, mask);
1550 freeaddrinfo(res);
1551 h->next = NULL;
1552 h->tail = h;
1553 }
1554
1555 return (h);
1556 }
1557
1558 struct node_host *
1559 host_dns(const char *s, int v4mask, int v6mask)
1560 {
1561 struct addrinfo hints, *res0, *res;
1562 struct node_host *n, *h = NULL;
1563 int error, noalias = 0;
1564 int got4 = 0, got6 = 0;
1565 char *p, *ps;
1566
1567 if ((ps = strdup(s)) == NULL)
1568 err(1, "host_dns: strdup");
1569 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
1570 noalias = 1;
1571 *p = '\0';
1572 }
1573 memset(&hints, 0, sizeof(hints));
1574 hints.ai_family = PF_UNSPEC;
1575 hints.ai_socktype = SOCK_STREAM; /* DUMMY */
1576 error = getaddrinfo(ps, NULL, &hints, &res0);
1577 if (error) {
1578 free(ps);
1579 return (h);
1580 }
1581
1582 for (res = res0; res; res = res->ai_next) {
1583 if (res->ai_family != AF_INET &&
1584 res->ai_family != AF_INET6)
1585 continue;
1586 if (noalias) {
1587 if (res->ai_family == AF_INET) {
1588 if (got4)
1589 continue;
1590 got4 = 1;
1591 } else {
1592 if (got6)
1593 continue;
1594 got6 = 1;
1595 }
1596 }
1597 n = calloc(1, sizeof(struct node_host));
1598 if (n == NULL)
1599 err(1, "host_dns: calloc");
1600 n->ifname = NULL;
1601 n->af = res->ai_family;
1602 if (res->ai_family == AF_INET) {
1603 memcpy(&n->addr.v.a.addr,
1604 &((struct sockaddr_in *)
1605 res->ai_addr)->sin_addr.s_addr,
1606 sizeof(struct in_addr));
1607 set_ipmask(n, v4mask);
1608 } else {
1609 memcpy(&n->addr.v.a.addr,
1610 &((struct sockaddr_in6 *)
1611 res->ai_addr)->sin6_addr.s6_addr,
1612 sizeof(struct in6_addr));
1613 n->ifindex =
1614 ((struct sockaddr_in6 *)
1615 res->ai_addr)->sin6_scope_id;
1616 set_ipmask(n, v6mask);
1617 }
1618 n->next = NULL;
1619 n->tail = n;
1620 if (h == NULL)
1621 h = n;
1622 else {
1623 h->tail->next = n;
1624 h->tail = n;
1625 }
1626 }
1627 freeaddrinfo(res0);
1628 free(ps);
1629
1630 return (h);
1631 }
1632
1633 /*
1634 * convert a hostname to a list of addresses and put them in the given buffer.
1635 * test:
1636 * if set to 1, only simple addresses are accepted (no netblock, no "!").
1637 */
1638 int
1639 append_addr(struct pfr_buffer *b, char *s, int test)
1640 {
1641 char *r;
1642 struct node_host *h, *n;
1643 int rv, not = 0;
1644
1645 for (r = s; *r == '!'; r++)
1646 not = !not;
1647 if ((n = host(r)) == NULL) {
1648 errno = 0;
1649 return (-1);
1650 }
1651 rv = append_addr_host(b, n, test, not);
1652 do {
1653 h = n;
1654 n = n->next;
1655 free(h);
1656 } while (n != NULL);
1657 return (rv);
1658 }
1659
1660 /*
1661 * same as previous function, but with a pre-parsed input and the ability
1662 * to "negate" the result. Does not free the node_host list.
1663 * not:
1664 * setting it to 1 is equivalent to adding "!" in front of parameter s.
1665 */
1666 int
1667 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
1668 {
1669 int bits;
1670 struct pfr_addr addr;
1671
1672 do {
1673 bzero(&addr, sizeof(addr));
1674 addr.pfra_not = n->not ^ not;
1675 addr.pfra_af = n->af;
1676 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af);
1677 switch (n->af) {
1678 case AF_INET:
1679 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
1680 bits = 32;
1681 break;
1682 case AF_INET6:
1683 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
1684 sizeof(struct in6_addr));
1685 bits = 128;
1686 break;
1687 default:
1688 errno = EINVAL;
1689 return (-1);
1690 }
1691 if ((test && (not || addr.pfra_net != bits)) ||
1692 addr.pfra_net > bits) {
1693 errno = EINVAL;
1694 return (-1);
1695 }
1696 if (pfr_buf_add(b, &addr))
1697 return (-1);
1698 } while ((n = n->next) != NULL);
1699
1700 return (0);
1701 }
1702
1703 int
1704 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor)
1705 {
1706 struct pfioc_trans_e trans;
1707
1708 bzero(&trans, sizeof(trans));
1709 trans.rs_num = rs_num;
1710 if (strlcpy(trans.anchor, anchor,
1711 sizeof(trans.anchor)) >= sizeof(trans.anchor))
1712 errx(1, "pfctl_add_trans: strlcpy");
1713
1714 return pfr_buf_add(buf, &trans);
1715 }
1716
1717 u_int32_t
1718 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor)
1719 {
1720 const struct pfioc_trans_e *p;
1721
1722 PFRB_FOREACH(p, buf)
1723 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor))
1724 return (p->ticket);
1725 errx(1, "pfctl_get_ticket: assertion failed");
1726 }
1727
1728 int
1729 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
1730 {
1731 struct pfioc_trans trans;
1732
1733 bzero(&trans, sizeof(trans));
1734 trans.size = buf->pfrb_size - from;
1735 trans.esize = sizeof(struct pfioc_trans_e);
1736 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
1737 return ioctl(dev, cmd, &trans);
1738 }
DragonFly BSD