b9a39d7c4075afdc214407e76dbfc117b65fff47
[dragonfly.git] / usr.sbin / pfctl / pfctl_parser.c
1 /*      $OpenBSD: pfctl_parser.c,v 1.194.2.1 2004/05/05 04:00:50 brad Exp $ */
2 /*      $DragonFly: src/usr.sbin/pfctl/pfctl_parser.c,v 1.3 2008/04/11 18:21:49 dillon Exp $ */
3
4 /*
5  * Copyright (c) 2001 Daniel Hartmeier
6  * Copyright (c) 2002,2003 Henning Brauer
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  *
13  *    - Redistributions of source code must retain the above copyright
14  *      notice, this list of conditions and the following disclaimer.
15  *    - Redistributions in binary form must reproduce the above
16  *      copyright notice, this list of conditions and the following
17  *      disclaimer in the documentation and/or other materials provided
18  *      with the distribution.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
28  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
30  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31  * POSSIBILITY OF SUCH DAMAGE.
32  *
33  */
34
35 #include <sys/param.h>
36 #include <sys/ioctl.h>
37 #include <sys/socket.h>
38 #include <net/if.h>
39 #include <netinet/in.h>
40 #include <netinet/in_systm.h>
41 #include <netinet/ip.h>
42 #include <netinet/ip_icmp.h>
43 #include <netinet/icmp6.h>
44 #include <net/pf/pfvar.h>
45 #include <arpa/inet.h>
46
47 #include <stdio.h>
48 #include <stdlib.h>
49 #include <string.h>
50 #include <ctype.h>
51 #include <netdb.h>
52 #include <stdarg.h>
53 #include <errno.h>
54 #include <err.h>
55 #include <ifaddrs.h>
56
57 #include "pfctl_parser.h"
58 #include "pfctl.h"
59
60 void             print_op (u_int8_t, const char *, const char *);
61 void             print_port (u_int8_t, u_int16_t, u_int16_t, const char *);
62 void             print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned);
63 void             print_flags (u_int8_t);
64 void             print_fromto(struct pf_rule_addr *, pf_osfp_t,
65                     struct pf_rule_addr *, u_int8_t, u_int8_t, int);
66 int              ifa_skip_if(const char *filter, struct node_host *p);
67
68 struct node_host        *host_if(const char *, int);
69 static struct node_host *host_v4(const char *);
70 struct node_host        *host_v6(const char *, int);
71 struct node_host        *host_dns(const char *, int, int);
72
73 const char *tcpflags = "FSRPAUEW";
74
75 static const struct icmptypeent icmp_type[] = {
76         { "echoreq",    ICMP_ECHO },
77         { "echorep",    ICMP_ECHOREPLY },
78         { "unreach",    ICMP_UNREACH },
79         { "squench",    ICMP_SOURCEQUENCH },
80         { "redir",      ICMP_REDIRECT },
81         { "althost",    ICMP_ALTHOSTADDR },
82         { "routeradv",  ICMP_ROUTERADVERT },
83         { "routersol",  ICMP_ROUTERSOLICIT },
84         { "timex",      ICMP_TIMXCEED },
85         { "paramprob",  ICMP_PARAMPROB },
86         { "timereq",    ICMP_TSTAMP },
87         { "timerep",    ICMP_TSTAMPREPLY },
88         { "inforeq",    ICMP_IREQ },
89         { "inforep",    ICMP_IREQREPLY },
90         { "maskreq",    ICMP_MASKREQ },
91         { "maskrep",    ICMP_MASKREPLY },
92         { "trace",      ICMP_TRACEROUTE },
93         { "dataconv",   ICMP_DATACONVERR },
94         { "mobredir",   ICMP_MOBILE_REDIRECT },
95         { "ipv6-where", ICMP_IPV6_WHEREAREYOU },
96         { "ipv6-here",  ICMP_IPV6_IAMHERE },
97         { "mobregreq",  ICMP_MOBILE_REGREQUEST },
98         { "mobregrep",  ICMP_MOBILE_REGREPLY },
99         { "skip",       ICMP_SKIP },
100         { "photuris",   ICMP_PHOTURIS }
101 };
102
103 static const struct icmptypeent icmp6_type[] = {
104         { "unreach",    ICMP6_DST_UNREACH },
105         { "toobig",     ICMP6_PACKET_TOO_BIG },
106         { "timex",      ICMP6_TIME_EXCEEDED },
107         { "paramprob",  ICMP6_PARAM_PROB },
108         { "echoreq",    ICMP6_ECHO_REQUEST },
109         { "echorep",    ICMP6_ECHO_REPLY },
110         { "groupqry",   ICMP6_MEMBERSHIP_QUERY },
111         { "listqry",    MLD_LISTENER_QUERY },
112         { "grouprep",   ICMP6_MEMBERSHIP_REPORT },
113         { "listenrep",  MLD_LISTENER_REPORT },
114         { "groupterm",  ICMP6_MEMBERSHIP_REDUCTION },
115         { "listendone", MLD_LISTENER_DONE },
116         { "routersol",  ND_ROUTER_SOLICIT },
117         { "routeradv",  ND_ROUTER_ADVERT },
118         { "neighbrsol", ND_NEIGHBOR_SOLICIT },
119         { "neighbradv", ND_NEIGHBOR_ADVERT },
120         { "redir",      ND_REDIRECT },
121         { "routrrenum", ICMP6_ROUTER_RENUMBERING },
122         { "wrureq",     ICMP6_WRUREQUEST },
123         { "wrurep",     ICMP6_WRUREPLY },
124         { "fqdnreq",    ICMP6_FQDN_QUERY },
125         { "fqdnrep",    ICMP6_FQDN_REPLY },
126         { "niqry",      ICMP6_NI_QUERY },
127         { "nirep",      ICMP6_NI_REPLY },
128         { "mtraceresp", MLD_MTRACE_RESP },
129         { "mtrace",     MLD_MTRACE }
130 };
131
132 static const struct icmpcodeent icmp_code[] = {
133         { "net-unr",            ICMP_UNREACH,   ICMP_UNREACH_NET },
134         { "host-unr",           ICMP_UNREACH,   ICMP_UNREACH_HOST },
135         { "proto-unr",          ICMP_UNREACH,   ICMP_UNREACH_PROTOCOL },
136         { "port-unr",           ICMP_UNREACH,   ICMP_UNREACH_PORT },
137         { "needfrag",           ICMP_UNREACH,   ICMP_UNREACH_NEEDFRAG },
138         { "srcfail",            ICMP_UNREACH,   ICMP_UNREACH_SRCFAIL },
139         { "net-unk",            ICMP_UNREACH,   ICMP_UNREACH_NET_UNKNOWN },
140         { "host-unk",           ICMP_UNREACH,   ICMP_UNREACH_HOST_UNKNOWN },
141         { "isolate",            ICMP_UNREACH,   ICMP_UNREACH_ISOLATED },
142         { "net-prohib",         ICMP_UNREACH,   ICMP_UNREACH_NET_PROHIB },
143         { "host-prohib",        ICMP_UNREACH,   ICMP_UNREACH_HOST_PROHIB },
144         { "net-tos",            ICMP_UNREACH,   ICMP_UNREACH_TOSNET },
145         { "host-tos",           ICMP_UNREACH,   ICMP_UNREACH_TOSHOST },
146         { "filter-prohib",      ICMP_UNREACH,   ICMP_UNREACH_FILTER_PROHIB },
147         { "host-preced",        ICMP_UNREACH,   ICMP_UNREACH_HOST_PRECEDENCE },
148         { "cutoff-preced",      ICMP_UNREACH,   ICMP_UNREACH_PRECEDENCE_CUTOFF },
149         { "redir-net",          ICMP_REDIRECT,  ICMP_REDIRECT_NET },
150         { "redir-host",         ICMP_REDIRECT,  ICMP_REDIRECT_HOST },
151         { "redir-tos-net",      ICMP_REDIRECT,  ICMP_REDIRECT_TOSNET },
152         { "redir-tos-host",     ICMP_REDIRECT,  ICMP_REDIRECT_TOSHOST },
153         { "normal-adv",         ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL },
154         { "common-adv",         ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON },
155         { "transit",            ICMP_TIMXCEED,  ICMP_TIMXCEED_INTRANS },
156         { "reassemb",           ICMP_TIMXCEED,  ICMP_TIMXCEED_REASS },
157         { "badhead",            ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR },
158         { "optmiss",            ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT },
159         { "badlen",             ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH },
160         { "unknown-ind",        ICMP_PHOTURIS,  ICMP_PHOTURIS_UNKNOWN_INDEX },
161         { "auth-fail",          ICMP_PHOTURIS,  ICMP_PHOTURIS_AUTH_FAILED },
162         { "decrypt-fail",       ICMP_PHOTURIS,  ICMP_PHOTURIS_DECRYPT_FAILED }
163 };
164
165 static const struct icmpcodeent icmp6_code[] = {
166         { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN },
167         { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE },
168         { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR },
169         { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE },
170         { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR },
171         { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT },
172         { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT },
173         { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY },
174         { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER },
175         { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER },
176         { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK },
177         { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER }
178 };
179
180 const struct pf_timeout pf_timeouts[] = {
181         { "tcp.first",          PFTM_TCP_FIRST_PACKET },
182         { "tcp.opening",        PFTM_TCP_OPENING },
183         { "tcp.established",    PFTM_TCP_ESTABLISHED },
184         { "tcp.closing",        PFTM_TCP_CLOSING },
185         { "tcp.finwait",        PFTM_TCP_FIN_WAIT },
186         { "tcp.closed",         PFTM_TCP_CLOSED },
187         { "udp.first",          PFTM_UDP_FIRST_PACKET },
188         { "udp.single",         PFTM_UDP_SINGLE },
189         { "udp.multiple",       PFTM_UDP_MULTIPLE },
190         { "icmp.first",         PFTM_ICMP_FIRST_PACKET },
191         { "icmp.error",         PFTM_ICMP_ERROR_REPLY },
192         { "other.first",        PFTM_OTHER_FIRST_PACKET },
193         { "other.single",       PFTM_OTHER_SINGLE },
194         { "other.multiple",     PFTM_OTHER_MULTIPLE },
195         { "frag",               PFTM_FRAG },
196         { "interval",           PFTM_INTERVAL },
197         { "adaptive.start",     PFTM_ADAPTIVE_START },
198         { "adaptive.end",       PFTM_ADAPTIVE_END },
199         { "src.track",          PFTM_SRC_NODE },
200         { NULL,                 0 }
201 };
202
203 const struct icmptypeent *
204 geticmptypebynumber(u_int8_t type, sa_family_t af)
205 {
206         unsigned int    i;
207
208         if (af != AF_INET6) {
209                 for (i=0; i < (sizeof (icmp_type) / sizeof(icmp_type[0]));
210                     i++) {
211                         if (type == icmp_type[i].type)
212                                 return (&icmp_type[i]);
213                 }
214         } else {
215                 for (i=0; i < (sizeof (icmp6_type) /
216                     sizeof(icmp6_type[0])); i++) {
217                         if (type == icmp6_type[i].type)
218                                  return (&icmp6_type[i]);
219                 }
220         }
221         return (NULL);
222 }
223
224 const struct icmptypeent *
225 geticmptypebyname(char *w, sa_family_t af)
226 {
227         unsigned int    i;
228
229         if (af != AF_INET6) {
230                 for (i=0; i < (sizeof (icmp_type) / sizeof(icmp_type[0]));
231                     i++) {
232                         if (!strcmp(w, icmp_type[i].name))
233                                 return (&icmp_type[i]);
234                 }
235         } else {
236                 for (i=0; i < (sizeof (icmp6_type) /
237                     sizeof(icmp6_type[0])); 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 < (sizeof (icmp_code) / sizeof(icmp_code[0]));
252                     i++) {
253                         if (type == icmp_code[i].type &&
254                             code == icmp_code[i].code)
255                                 return (&icmp_code[i]);
256                 }
257         } else {
258                 for (i=0; i < (sizeof (icmp6_code) /
259                     sizeof(icmp6_code[0])); i++) {
260                         if (type == icmp6_code[i].type &&
261                             code == icmp6_code[i].code)
262                                 return (&icmp6_code[i]);
263                 }
264         }
265         return (NULL);
266 }
267
268 const struct icmpcodeent *
269 geticmpcodebyname(u_long type, char *w, sa_family_t af)
270 {
271         unsigned int    i;
272
273         if (af != AF_INET6) {
274                 for (i=0; i < (sizeof (icmp_code) / sizeof(icmp_code[0]));
275                     i++) {
276                         if (type == icmp_code[i].type &&
277                             !strcmp(w, icmp_code[i].name))
278                                 return (&icmp_code[i]);
279                 }
280         } else {
281                 for (i=0; i < (sizeof (icmp6_code) /
282                     sizeof(icmp6_code[0])); i++) {
283                         if (type == icmp6_code[i].type &&
284                             !strcmp(w, icmp6_code[i].name))
285                                 return (&icmp6_code[i]);
286                 }
287         }
288         return (NULL);
289 }
290
291 void
292 print_op(u_int8_t op, const char *a1, const char *a2)
293 {
294         if (op == PF_OP_IRG)
295                 printf(" %s >< %s", a1, a2);
296         else if (op == PF_OP_XRG)
297                 printf(" %s <> %s", a1, a2);
298         else if (op == PF_OP_EQ)
299                 printf(" = %s", a1);
300         else if (op == PF_OP_NE)
301                 printf(" != %s", a1);
302         else if (op == PF_OP_LT)
303                 printf(" < %s", a1);
304         else if (op == PF_OP_LE)
305                 printf(" <= %s", a1);
306         else if (op == PF_OP_GT)
307                 printf(" > %s", a1);
308         else if (op == PF_OP_GE)
309                 printf(" >= %s", a1);
310         else if (op == PF_OP_RRG)
311                 printf(" %s:%s", a1, a2);
312 }
313
314 void
315 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto)
316 {
317         char             a1[6], a2[6];
318         struct servent  *s;
319
320         s = getservbyport(p1, proto);
321         p1 = ntohs(p1);
322         p2 = ntohs(p2);
323         snprintf(a1, sizeof(a1), "%u", p1);
324         snprintf(a2, sizeof(a2), "%u", p2);
325         printf(" port");
326         if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE))
327                 print_op(op, s->s_name, a2);
328         else
329                 print_op(op, a1, a2);
330 }
331
332 void
333 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax)
334 {
335         char    a1[11], a2[11];
336
337         snprintf(a1, sizeof(a1), "%u", u1);
338         snprintf(a2, sizeof(a2), "%u", u2);
339         printf(" %s", t);
340         if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE))
341                 print_op(op, "unknown", a2);
342         else
343                 print_op(op, a1, a2);
344 }
345
346 void
347 print_flags(u_int8_t f)
348 {
349         int     i;
350
351         for (i = 0; tcpflags[i]; ++i)
352                 if (f & (1 << i))
353                         printf("%c", tcpflags[i]);
354 }
355
356 void
357 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst,
358     sa_family_t af, u_int8_t proto, int verbose)
359 {
360         char buf[PF_OSFP_LEN*3];
361         if (src->addr.type == PF_ADDR_ADDRMASK &&
362             dst->addr.type == PF_ADDR_ADDRMASK &&
363             PF_AZERO(&src->addr.v.a.addr, AF_INET6) &&
364             PF_AZERO(&src->addr.v.a.mask, AF_INET6) &&
365             PF_AZERO(&dst->addr.v.a.addr, AF_INET6) &&
366             PF_AZERO(&dst->addr.v.a.mask, AF_INET6) &&
367             !src->not && !dst->not &&
368             !src->port_op && !dst->port_op &&
369             osfp == PF_OSFP_ANY)
370                 printf(" all");
371         else {
372                 printf(" from ");
373                 if (src->not)
374                         printf("! ");
375                 print_addr(&src->addr, af, verbose);
376                 if (src->port_op)
377                         print_port(src->port_op, src->port[0],
378                             src->port[1],
379                             proto == IPPROTO_TCP ? "tcp" : "udp");
380                 if (osfp != PF_OSFP_ANY)
381                         printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf,
382                             sizeof(buf)));
383
384                 printf(" to ");
385                 if (dst->not)
386                         printf("! ");
387                 print_addr(&dst->addr, af, verbose);
388                 if (dst->port_op)
389                         print_port(dst->port_op, dst->port[0],
390                             dst->port[1],
391                             proto == IPPROTO_TCP ? "tcp" : "udp");
392         }
393 }
394
395 void
396 print_pool(struct pf_pool *pool, u_int16_t p1, u_int16_t p2,
397     sa_family_t af, int id)
398 {
399         struct pf_pooladdr      *pooladdr;
400
401         if ((TAILQ_FIRST(&pool->list) != NULL) &&
402             TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
403                 printf("{ ");
404         TAILQ_FOREACH(pooladdr, &pool->list, entries){
405                 switch (id) {
406                 case PF_NAT:
407                 case PF_RDR:
408                 case PF_BINAT:
409                         print_addr(&pooladdr->addr, af, 0);
410                         break;
411                 case PF_PASS:
412                         if (PF_AZERO(&pooladdr->addr.v.a.addr, af))
413                                 printf("%s", pooladdr->ifname);
414                         else {
415                                 printf("(%s ", pooladdr->ifname);
416                                 print_addr(&pooladdr->addr, af, 0);
417                                 printf(")");
418                         }
419                         break;
420                 default:
421                         break;
422                 }
423                 if (TAILQ_NEXT(pooladdr, entries) != NULL)
424                         printf(", ");
425                 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
426                         printf(" }");
427         }
428         switch (id) {
429         case PF_NAT:
430                 if ((p1 != PF_NAT_PROXY_PORT_LOW ||
431                     p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) {
432                         if (p1 == p2)
433                                 printf(" port %u", p1);
434                         else
435                                 printf(" port %u:%u", p1, p2);
436                 }
437                 break;
438         case PF_RDR:
439                 if (p1) {
440                         printf(" port %u", p1);
441                         if (p2 && (p2 != p1))
442                                 printf(":%u", p2);
443                 }
444                 break;
445         default:
446                 break;
447         }
448         switch (pool->opts & PF_POOL_TYPEMASK) {
449         case PF_POOL_NONE:
450                 break;
451         case PF_POOL_BITMASK:
452                 printf(" bitmask");
453                 break;
454         case PF_POOL_RANDOM:
455                 printf(" random");
456                 break;
457         case PF_POOL_SRCHASH:
458                 printf(" source-hash 0x%08x%08x%08x%08x",
459                     pool->key.key32[0], pool->key.key32[1],
460                     pool->key.key32[2], pool->key.key32[3]);
461                 break;
462         case PF_POOL_ROUNDROBIN:
463                 printf(" round-robin");
464                 break;
465         }
466         if (pool->opts & PF_POOL_STICKYADDR)
467                 printf(" sticky-address");
468         if (id == PF_NAT && p1 == 0 && p2 == 0)
469                 printf(" static-port");
470 }
471
472 const char      *pf_reasons[PFRES_MAX+1] = PFRES_NAMES;
473 const char      *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES;
474 const char      *pf_scounters[FCNT_MAX+1] = FCNT_NAMES;
475
476 void
477 print_status(struct pf_status *s, int opts)
478 {
479         char    statline[80];
480         const char *running;
481         time_t  runtime;
482         int     i;
483
484         runtime = time(NULL) - s->since;
485         running = s->running ? "Enabled" : "Disabled";
486
487         if (s->since) {
488                 unsigned        sec, min, hrs, day = runtime;
489
490                 sec = day % 60;
491                 day /= 60;
492                 min = day % 60;
493                 day /= 60;
494                 hrs = day % 24;
495                 day /= 24;
496                 snprintf(statline, sizeof(statline),
497                     "Status: %s for %u days %.2u:%.2u:%.2u",
498                     running, day, hrs, min, sec);
499         } else
500                 snprintf(statline, sizeof(statline), "Status: %s", running);
501         printf("%-44s", statline);
502         switch (s->debug) {
503         case PF_DEBUG_NONE:
504                 printf("%15s\n\n", "Debug: None");
505                 break;
506         case PF_DEBUG_URGENT:
507                 printf("%15s\n\n", "Debug: Urgent");
508                 break;
509         case PF_DEBUG_MISC:
510                 printf("%15s\n\n", "Debug: Misc");
511                 break;
512         case PF_DEBUG_NOISY:
513                 printf("%15s\n\n", "Debug: Loud");
514                 break;
515         }
516         printf("Hostid: 0x%08x\n\n", ntohl(s->hostid));
517         if (s->ifname[0] != 0) {
518                 printf("Interface Stats for %-16s %5s %16s\n",
519                     s->ifname, "IPv4", "IPv6");
520                 printf("  %-25s %14llu %16llu\n", "Bytes In",
521                     (unsigned long long)s->bcounters[0][0],
522                     (unsigned long long)s->bcounters[1][0]);
523                 printf("  %-25s %14llu %16llu\n", "Bytes Out",
524                     (unsigned long long)s->bcounters[0][1],
525                     (unsigned long long)s->bcounters[1][1]);
526                 printf("  Packets In\n");
527                 printf("    %-23s %14llu %16llu\n", "Passed",
528                     (unsigned long long)s->pcounters[0][0][PF_PASS],
529                     (unsigned long long)s->pcounters[1][0][PF_PASS]);
530                 printf("    %-23s %14llu %16llu\n", "Blocked",
531                     (unsigned long long)s->pcounters[0][0][PF_DROP],
532                     (unsigned long long)s->pcounters[1][0][PF_DROP]);
533                 printf("  Packets Out\n");
534                 printf("    %-23s %14llu %16llu\n", "Passed",
535                     (unsigned long long)s->pcounters[0][1][PF_PASS],
536                     (unsigned long long)s->pcounters[1][1][PF_PASS]);
537                 printf("    %-23s %14llu %16llu\n\n", "Blocked",
538                     (unsigned long long)s->pcounters[0][1][PF_DROP],
539                     (unsigned long long)s->pcounters[1][1][PF_DROP]);
540         }
541         printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
542         printf("  %-25s %14u %14s\n", "current entries", s->states, "");
543         for (i = 0; i < FCNT_MAX; i++) {
544                 printf("  %-25s %14llu ", pf_fcounters[i],
545                             (unsigned long long)s->fcounters[i]);
546                 if (runtime > 0)
547                         printf("%14.1f/s\n",
548                             (double)s->fcounters[i] / (double)runtime);
549                 else
550                         printf("%14s\n", "");
551         }
552         if (opts & PF_OPT_VERBOSE) {
553                 printf("Source Tracking Table\n");
554                 printf("  %-25s %14u %14s\n", "current entries",
555                     s->src_nodes, "");
556                 for (i = 0; i < SCNT_MAX; i++) {
557                         printf("  %-25s %14lld ", pf_scounters[i],
558                                     s->scounters[i]);
559                         if (runtime > 0)
560                                 printf("%14.1f/s\n",
561                                     (double)s->scounters[i] / (double)runtime);
562                         else
563                                 printf("%14s\n", "");
564                 }
565         }
566         printf("Counters\n");
567         for (i = 0; i < PFRES_MAX; i++) {
568                 printf("  %-25s %14llu ", pf_reasons[i],
569                     (unsigned long long)s->counters[i]);
570                 if (runtime > 0)
571                         printf("%14.1f/s\n",
572                             (double)s->counters[i] / (double)runtime);
573                 else
574                         printf("%14s\n", "");
575         }
576 }
577
578 void
579 print_src_node(struct pf_src_node *sn, int opts)
580 {
581         struct pf_addr_wrap aw;
582         int min, sec;
583
584         memset(&aw, 0, sizeof(aw));
585         if (sn->af == AF_INET)
586                 aw.v.a.mask.addr32[0] = 0xffffffff;
587         else
588                 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
589
590         aw.v.a.addr = sn->addr;
591         print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
592         printf(" -> ");
593         aw.v.a.addr = sn->raddr;
594         print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
595         printf(" (%d states)\n", sn->states);
596         if (opts & PF_OPT_VERBOSE) {
597                 sec = sn->creation % 60;
598                 sn->creation /= 60;
599                 min = sn->creation % 60;
600                 sn->creation /= 60;
601                 printf("   age %.2u:%.2u:%.2u", sn->creation, min, sec);
602                 if (sn->states == 0) {
603                         sec = sn->expire % 60;
604                         sn->expire /= 60;
605                         min = sn->expire % 60;
606                         sn->expire /= 60;
607                         printf(", expires in %.2u:%.2u:%.2u",
608                             sn->expire, min, sec);
609                 }
610                 printf(", %u pkts, %u bytes", sn->packets, sn->bytes);
611                 switch (sn->ruletype) {
612                 case PF_NAT:
613                         if (sn->rule.nr != (uint32_t)(-1))
614                                 printf(", nat rule %u", sn->rule.nr);
615                         break;
616                 case PF_RDR:
617                         if (sn->rule.nr != (uint32_t)(-1))
618                                 printf(", rdr rule %u", sn->rule.nr);
619                         break;
620                 case PF_PASS:
621                         if (sn->rule.nr != (uint32_t)(-1))
622                                 printf(", filter rule %u", sn->rule.nr);
623                         break;
624                 }
625                 printf("\n");
626         }
627 }
628
629 void
630 print_rule(struct pf_rule *r, int verbose)
631 {
632         static const char *actiontypes[] = { "pass", "block", "scrub", "nat",
633             "no nat", "binat", "no binat", "rdr", "no rdr" };
634         static const char *anchortypes[] = { "anchor", "anchor", "anchor",
635             "nat-anchor", "nat-anchor", "binat-anchor", "binat-anchor",
636             "rdr-anchor", "rdr-anchor" };
637         int     i, opts;
638
639         if (verbose)
640                 printf("@%d ", r->nr);
641         if (r->action > PF_NORDR)
642                 printf("action(%d)", r->action);
643         else if (r->anchorname[0])
644                 printf("%s %s", anchortypes[r->action], r->anchorname);
645         else {
646                 printf("%s", actiontypes[r->action]);
647                 if (r->natpass)
648                         printf(" pass");
649         }
650         if (r->action == PF_DROP) {
651                 if (r->rule_flag & PFRULE_RETURN)
652                         printf(" return");
653                 else if (r->rule_flag & PFRULE_RETURNRST) {
654                         if (!r->return_ttl)
655                                 printf(" return-rst");
656                         else
657                                 printf(" return-rst(ttl %d)", r->return_ttl);
658                 } else if (r->rule_flag & PFRULE_RETURNICMP) {
659                         const struct icmpcodeent        *ic, *ic6;
660
661                         ic = geticmpcodebynumber(r->return_icmp >> 8,
662                             r->return_icmp & 255, AF_INET);
663                         ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
664                             r->return_icmp6 & 255, AF_INET6);
665
666                         switch (r->af) {
667                         case AF_INET:
668                                 printf(" return-icmp");
669                                 if (ic == NULL)
670                                         printf("(%u)", r->return_icmp & 255);
671                                 else
672                                         printf("(%s)", ic->name);
673                                 break;
674                         case AF_INET6:
675                                 printf(" return-icmp6");
676                                 if (ic6 == NULL)
677                                         printf("(%u)", r->return_icmp6 & 255);
678                                 else
679                                         printf("(%s)", ic6->name);
680                                 break;
681                         default:
682                                 printf(" return-icmp");
683                                 if (ic == NULL)
684                                         printf("(%u, ", r->return_icmp & 255);
685                                 else
686                                         printf("(%s, ", ic->name);
687                                 if (ic6 == NULL)
688                                         printf("%u)", r->return_icmp6 & 255);
689                                 else
690                                         printf("%s)", ic6->name);
691                                 break;
692                         }
693                 } else
694                         printf(" drop");
695         }
696         if (r->direction == PF_IN)
697                 printf(" in");
698         else if (r->direction == PF_OUT)
699                 printf(" out");
700         if (r->log == 1)
701                 printf(" log");
702         else if (r->log == 2)
703                 printf(" log-all");
704         if (r->quick)
705                 printf(" quick");
706         if (r->ifname[0]) {
707                 if (r->ifnot)
708                         printf(" on ! %s", r->ifname);
709                 else
710                         printf(" on %s", r->ifname);
711         }
712         if (r->rt) {
713                 if (r->rt == PF_ROUTETO)
714                         printf(" route-to");
715                 else if (r->rt == PF_REPLYTO)
716                         printf(" reply-to");
717                 else if (r->rt == PF_DUPTO)
718                         printf(" dup-to");
719                 else if (r->rt == PF_FASTROUTE)
720                         printf(" fastroute");
721                 if (r->rt != PF_FASTROUTE) {
722                         printf(" ");
723                         print_pool(&r->rpool, 0, 0, r->af, PF_PASS);
724                 }
725         }
726         if (r->af) {
727                 if (r->af == AF_INET)
728                         printf(" inet");
729                 else
730                         printf(" inet6");
731         }
732         if (r->proto) {
733                 struct protoent *p;
734
735                 if ((p = getprotobynumber(r->proto)) != NULL)
736                         printf(" proto %s", p->p_name);
737                 else
738                         printf(" proto %u", r->proto);
739         }
740         print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto,
741             verbose);
742         if (r->uid.op)
743                 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user",
744                     UID_MAX);
745         if (r->gid.op)
746                 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group",
747                     GID_MAX);
748         if (r->flags || r->flagset) {
749                 printf(" flags ");
750                 print_flags(r->flags);
751                 printf("/");
752                 print_flags(r->flagset);
753         }
754         if (r->type) {
755                 const struct icmptypeent        *it;
756
757                 it = geticmptypebynumber(r->type-1, r->af);
758                 if (r->af != AF_INET6)
759                         printf(" icmp-type");
760                 else
761                         printf(" icmp6-type");
762                 if (it != NULL)
763                         printf(" %s", it->name);
764                 else
765                         printf(" %u", r->type-1);
766                 if (r->code) {
767                         const struct icmpcodeent        *ic;
768
769                         ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
770                         if (ic != NULL)
771                                 printf(" code %s", ic->name);
772                         else
773                                 printf(" code %u", r->code-1);
774                 }
775         }
776         if (r->tos)
777                 printf(" tos 0x%2.2x", r->tos);
778         if (r->keep_state == PF_STATE_NORMAL)
779                 printf(" keep state");
780         else if (r->keep_state == PF_STATE_MODULATE)
781                 printf(" modulate state");
782         else if (r->keep_state == PF_STATE_SYNPROXY)
783                 printf(" synproxy state");
784         if (r->prob) {
785                 char    buf[20];
786
787                 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
788                 for (i = strlen(buf)-1; i > 0; i--) {
789                         if (buf[i] == '0')
790                                 buf[i] = '\0';
791                         else {
792                                 if (buf[i] == '.')
793                                         buf[i] = '\0';
794                                 break;
795                         }
796                 }
797                 printf(" probability %s%%", buf);
798         }
799         opts = 0;
800         if (r->max_states || r->max_src_nodes || r->max_src_states)
801                 opts = 1;
802         if (r->pickup_mode)
803                 opts = 1;
804         if (r->rule_flag & PFRULE_NOSYNC)
805                 opts = 1;
806         if (r->rule_flag & PFRULE_SRCTRACK)
807                 opts = 1;
808         if (r->rule_flag & (PFRULE_IFBOUND | PFRULE_GRBOUND))
809                 opts = 1;
810         for (i = 0; !opts && i < PFTM_MAX; ++i)
811                 if (r->timeout[i])
812                         opts = 1;
813         if (opts) {
814                 printf(" (");
815                 switch(r->pickup_mode) {
816                 case PF_PICKUPS_UNSPECIFIED:
817                         break;
818                 case PF_PICKUPS_DISABLED:
819                         printf("no-pickups");
820                         opts = 0;
821                         break;
822                 case PF_PICKUPS_HASHONLY:
823                         printf("hash-only");
824                         opts = 0;
825                         break;
826                 case PF_PICKUPS_ENABLED:
827                         printf("pickups");
828                         opts = 0;
829                         break;
830                 default:
831                         printf("unknown-pickups-mode-%d", r->pickup_mode);
832                         break;
833                 }
834                 if (r->max_states) {
835                         if (!opts)
836                                 printf(", ");
837                         printf("max %u", r->max_states);
838                         opts = 0;
839                 }
840                 if (r->rule_flag & PFRULE_NOSYNC) {
841                         if (!opts)
842                                 printf(", ");
843                         printf("no-sync");
844                         opts = 0;
845                 }
846                 if (r->rule_flag & PFRULE_SRCTRACK) {
847                         if (!opts)
848                                 printf(", ");
849                         printf("source-track");
850                         if (r->rule_flag & PFRULE_RULESRCTRACK)
851                                 printf(" rule");
852                         else
853                                 printf(" global");
854                         opts = 0;
855                 }
856                 if (r->max_src_states) {
857                         if (!opts)
858                                 printf(", ");
859                         printf("max-src-states %u", r->max_src_states);
860                         opts = 0;
861                 }
862                 if (r->max_src_nodes) {
863                         if (!opts)
864                                 printf(", ");
865                         printf("max-src-nodes %u", r->max_src_nodes);
866                         opts = 0;
867                 }
868                 if (r->rule_flag & PFRULE_IFBOUND) {
869                         if (!opts)
870                                 printf(", ");
871                         printf("if-bound");
872                         opts = 0;
873                 }
874                 if (r->rule_flag & PFRULE_GRBOUND) {
875                         if (!opts)
876                                 printf(", ");
877                         printf("group-bound");
878                         opts = 0;
879                 }
880                 for (i = 0; i < PFTM_MAX; ++i)
881                         if (r->timeout[i]) {
882                                 if (!opts)
883                                         printf(", ");
884                                 opts = 0;
885                                 printf("%s %u", pf_timeouts[i].name,
886                                     r->timeout[i]);
887                         }
888                 printf(")");
889         }
890         if (r->rule_flag & PFRULE_FRAGMENT)
891                 printf(" fragment");
892         if (r->rule_flag & PFRULE_NODF)
893                 printf(" no-df");
894         if (r->rule_flag & PFRULE_RANDOMID)
895                 printf(" random-id");
896         if (r->min_ttl)
897                 printf(" min-ttl %d", r->min_ttl);
898         if (r->max_mss)
899                 printf(" max-mss %d", r->max_mss);
900         if (r->allow_opts)
901                 printf(" allow-opts");
902         if (r->action == PF_SCRUB) {
903                 if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
904                         printf(" reassemble tcp");
905
906                 if (r->rule_flag & PFRULE_FRAGDROP)
907                         printf(" fragment drop-ovl");
908                 else if (r->rule_flag & PFRULE_FRAGCROP)
909                         printf(" fragment crop");
910                 else
911                         printf(" fragment reassemble");
912         }
913         if (r->label[0])
914                 printf(" label \"%s\"", r->label);
915         if (r->qname[0] && r->pqname[0])
916                 printf(" queue(%s, %s)", r->qname, r->pqname);
917         else if (r->qname[0])
918                 printf(" queue %s", r->qname);
919         if (r->tagname[0])
920                 printf(" tag %s", r->tagname);
921         if (r->match_tagname[0]) {
922                 if (r->match_tag_not)
923                         printf(" !");
924                 printf(" tagged %s", r->match_tagname);
925         }
926         if (!r->anchorname[0] && (r->action == PF_NAT ||
927             r->action == PF_BINAT || r->action == PF_RDR)) {
928                 printf(" -> ");
929                 print_pool(&r->rpool, r->rpool.proxy_port[0],
930                     r->rpool.proxy_port[1], r->af, r->action);
931         }
932         printf("\n");
933 }
934
935 void
936 print_tabledef(const char *name, int flags, int addrs,
937     struct node_tinithead *nodes)
938 {
939         struct node_tinit       *ti, *nti;
940         struct node_host        *h;
941
942         printf("table <%s>", name);
943         if (flags & PFR_TFLAG_CONST)
944                 printf(" const");
945         if (flags & PFR_TFLAG_PERSIST)
946                 printf(" persist");
947         SIMPLEQ_FOREACH(ti, nodes, entries) {
948                 if (ti->file) {
949                         printf(" file \"%s\"", ti->file);
950                         continue;
951                 }
952                 printf(" {");
953                 for (;;) {
954                         for (h = ti->host; h != NULL; h = h->next) {
955                                 printf(h->not ? " !" : " ");
956                                 print_addr(&h->addr, h->af, 0);
957                         }
958                         nti = SIMPLEQ_NEXT(ti, entries);
959                         if (nti != NULL && nti->file == NULL)
960                                 ti = nti;       /* merge lists */
961                         else
962                                 break;
963                 }
964                 printf(" }");
965         }
966         if (addrs && SIMPLEQ_EMPTY(nodes))
967                 printf(" { }");
968         printf("\n");
969 }
970
971 int
972 parse_flags(const char *s)
973 {
974         const char      *p, *q;
975         u_int8_t         f = 0;
976
977         for (p = s; *p; p++) {
978                 if ((q = strchr(tcpflags, *p)) == NULL)
979                         return -1;
980                 else
981                         f |= 1 << (q - tcpflags);
982         }
983         return (f ? f : PF_TH_ALL);
984 }
985
986 void
987 set_ipmask(struct node_host *h, u_int8_t b)
988 {
989         struct pf_addr  *m, *n;
990         int              i, j = 0;
991
992         m = &h->addr.v.a.mask;
993
994         for (i = 0; i < 4; i++)
995                 m->addr32[i] = 0;
996
997         while (b >= 32) {
998                 m->addr32[j++] = 0xffffffff;
999                 b -= 32;
1000         }
1001         for (i = 31; i > 31-b; --i)
1002                 m->addr32[j] |= (1 << i);
1003         if (b)
1004                 m->addr32[j] = htonl(m->addr32[j]);
1005
1006         /* Mask off bits of the address that will never be used. */
1007         n = &h->addr.v.a.addr;
1008         if (h->addr.type == PF_ADDR_ADDRMASK)
1009                 for (i = 0; i < 4; i++)
1010                         n->addr32[i] = n->addr32[i] & m->addr32[i];
1011 }
1012
1013 int
1014 check_netmask(struct node_host *h, sa_family_t af)
1015 {
1016         struct node_host        *n = NULL;
1017         struct pf_addr  *m;
1018
1019         for (n = h; n != NULL; n = n->next) {
1020                 if (h->addr.type == PF_ADDR_TABLE)
1021                         continue;
1022                 m = &h->addr.v.a.mask;
1023                 /* fix up netmask for dynaddr */
1024                 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL &&
1025                     unmask(m, AF_INET6) > 32)
1026                         set_ipmask(n, 32);
1027                 /* netmasks > 32 bit are invalid on v4 */
1028                 if (af == AF_INET &&
1029                     (m->addr32[1] || m->addr32[2] || m->addr32[3])) {
1030                         fprintf(stderr, "netmask %u invalid for IPv4 address\n",
1031                             unmask(m, AF_INET6));
1032                         return (1);
1033                 }
1034         }
1035         return (0);
1036 }
1037
1038 /* interface lookup routines */
1039
1040 struct node_host        *iftab;
1041
1042 void
1043 ifa_load(void)
1044 {
1045         struct ifaddrs          *ifap, *ifa;
1046         struct node_host        *n = NULL, *h = NULL;
1047         struct pfr_buffer        b;
1048         const struct pfi_if     *p;
1049
1050         if (getifaddrs(&ifap) < 0)
1051                 err(1, "getifaddrs");
1052
1053         for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1054                 if (!(ifa->ifa_addr->sa_family == AF_INET ||
1055                     ifa->ifa_addr->sa_family == AF_INET6 ||
1056                     ifa->ifa_addr->sa_family == AF_LINK))
1057                                 continue;
1058                 n = calloc(1, sizeof(struct node_host));
1059                 if (n == NULL)
1060                         err(1, "address: calloc");
1061                 n->af = ifa->ifa_addr->sa_family;
1062                 n->ifa_flags = ifa->ifa_flags;
1063 #ifdef __KAME__
1064                 if (n->af == AF_INET6 &&
1065                     IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
1066                     ifa->ifa_addr)->sin6_addr) &&
1067                     ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
1068                     0) {
1069                         struct sockaddr_in6     *sin6;
1070
1071                         sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1072                         sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
1073                             sin6->sin6_addr.s6_addr[3];
1074                         sin6->sin6_addr.s6_addr[2] = 0;
1075                         sin6->sin6_addr.s6_addr[3] = 0;
1076                 }
1077 #endif
1078                 n->ifindex = 0;
1079                 if (n->af == AF_INET) {
1080                         memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *)
1081                             ifa->ifa_addr)->sin_addr.s_addr,
1082                             sizeof(struct in_addr));
1083                         memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *)
1084                             ifa->ifa_netmask)->sin_addr.s_addr,
1085                             sizeof(struct in_addr));
1086                         if (ifa->ifa_broadaddr != NULL)
1087                                 memcpy(&n->bcast, &((struct sockaddr_in *)
1088                                     ifa->ifa_broadaddr)->sin_addr.s_addr,
1089                                     sizeof(struct in_addr));
1090                         if (ifa->ifa_dstaddr != NULL)
1091                                 memcpy(&n->peer, &((struct sockaddr_in *)
1092                                     ifa->ifa_dstaddr)->sin_addr.s_addr,
1093                                     sizeof(struct in_addr));
1094                 } else if (n->af == AF_INET6) {
1095                         memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *)
1096                             ifa->ifa_addr)->sin6_addr.s6_addr,
1097                             sizeof(struct in6_addr));
1098                         memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *)
1099                             ifa->ifa_netmask)->sin6_addr.s6_addr,
1100                             sizeof(struct in6_addr));
1101                         if (ifa->ifa_broadaddr != NULL)
1102                                 memcpy(&n->bcast, &((struct sockaddr_in6 *)
1103                                     ifa->ifa_broadaddr)->sin6_addr.s6_addr,
1104                                     sizeof(struct in6_addr));
1105                         if (ifa->ifa_dstaddr != NULL)
1106                                  memcpy(&n->peer, &((struct sockaddr_in6 *)
1107                                     ifa->ifa_dstaddr)->sin6_addr.s6_addr,
1108                                     sizeof(struct in6_addr));
1109                         n->ifindex = ((struct sockaddr_in6 *)
1110                             ifa->ifa_addr)->sin6_scope_id;
1111                 }
1112                 if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
1113                         err(1, "ifa_load: strdup");
1114                 n->next = NULL;
1115                 n->tail = n;
1116                 if (h == NULL)
1117                         h = n;
1118                 else {
1119                         h->tail->next = n;
1120                         h->tail = n;
1121                 }
1122         }
1123
1124         /* add interface groups, including clonable and dynamic stuff */
1125         bzero(&b, sizeof(b));
1126         b.pfrb_type = PFRB_IFACES;
1127         for (;;) {
1128                 if (pfr_buf_grow(&b, b.pfrb_size))
1129                         err(1, "ifa_load: pfr_buf_grow");
1130                 b.pfrb_size = b.pfrb_msize;
1131                 if (pfi_get_ifaces(NULL, b.pfrb_caddr, &b.pfrb_size,
1132                     PFI_FLAG_GROUP))
1133                         err(1, "ifa_load: pfi_get_ifaces");
1134                 if (b.pfrb_size <= b.pfrb_msize)
1135                         break;
1136         }
1137         PFRB_FOREACH(p, &b) {
1138                 n = calloc(1, sizeof(struct node_host));
1139                 if (n == NULL)
1140                         err(1, "address: calloc");
1141                 n->af = AF_LINK;
1142                 n->ifa_flags = PF_IFA_FLAG_GROUP;
1143                 if (p->pfif_flags & PFI_IFLAG_DYNAMIC)
1144                         n->ifa_flags |= PF_IFA_FLAG_DYNAMIC;
1145                 if (p->pfif_flags & PFI_IFLAG_CLONABLE)
1146                         n->ifa_flags |= PF_IFA_FLAG_CLONABLE;
1147                 if (!strcmp(p->pfif_name, "lo"))
1148                         n->ifa_flags |= IFF_LOOPBACK;
1149                 if ((n->ifname = strdup(p->pfif_name)) == NULL)
1150                         err(1, "ifa_load: strdup");
1151                 n->next = NULL;
1152                 n->tail = n;
1153                 if (h == NULL)
1154                         h = n;
1155                 else {
1156                         h->tail->next = n;
1157                         h->tail = n;
1158                 }
1159         }
1160
1161         iftab = h;
1162         freeifaddrs(ifap);
1163 }
1164
1165 struct node_host *
1166 ifa_exists(const char *ifa_name, int group_ok)
1167 {
1168         struct node_host        *n;
1169         char                    *p, buf[IFNAMSIZ];
1170         int                      group;
1171
1172         group = !isdigit(ifa_name[strlen(ifa_name) - 1]);
1173         if (group && !group_ok)
1174                 return (NULL);
1175         if (iftab == NULL)
1176                 ifa_load();
1177
1178         for (n = iftab; n; n = n->next) {
1179                 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
1180                         return (n);
1181         }
1182         if (!group) {
1183                 /* look for clonable and/or dynamic interface */
1184                 strlcpy(buf, ifa_name, sizeof(buf));
1185                 for (p = buf + strlen(buf) - 1; p > buf && isdigit(*p); p--)
1186                         *p = '\0';
1187                 for (n = iftab; n != NULL; n = n->next)
1188                         if (n->af == AF_LINK &&
1189                             !strncmp(n->ifname, buf, IFNAMSIZ))
1190                                 break;
1191                 if (n != NULL && n->ifa_flags &
1192                     (PF_IFA_FLAG_DYNAMIC | PF_IFA_FLAG_CLONABLE))
1193                         return (n);     /* XXX */
1194         }
1195         return (NULL);
1196 }
1197
1198 struct node_host *
1199 ifa_lookup(const char *ifa_name, int flags)
1200 {
1201         struct node_host        *p = NULL, *h = NULL, *n = NULL;
1202         int                      got4 = 0, got6 = 0;
1203         const char               *last_if = NULL;
1204
1205         if (!strncmp(ifa_name, "self", IFNAMSIZ))
1206                 ifa_name = NULL;
1207
1208         if (iftab == NULL)
1209                 ifa_load();
1210
1211         for (p = iftab; p; p = p->next) {
1212                 if (ifa_skip_if(ifa_name, p))
1213                         continue;
1214                 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
1215                         continue;
1216                 if ((flags & PFI_AFLAG_BROADCAST) &&
1217                     !(p->ifa_flags & IFF_BROADCAST))
1218                         continue;
1219                 if ((flags & PFI_AFLAG_PEER) &&
1220                     !(p->ifa_flags & IFF_POINTOPOINT))
1221                         continue;
1222                 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
1223                         continue;
1224                 if (last_if == NULL || strcmp(last_if, p->ifname))
1225                         got4 = got6 = 0;
1226                 last_if = p->ifname;
1227                 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
1228                         continue;
1229                 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
1230                         continue;
1231                 if (p->af == AF_INET)
1232                         got4 = 1;
1233                 else
1234                         got6 = 1;
1235                 n = calloc(1, sizeof(struct node_host));
1236                 if (n == NULL)
1237                         err(1, "address: calloc");
1238                 n->af = p->af;
1239                 if (flags & PFI_AFLAG_BROADCAST)
1240                         memcpy(&n->addr.v.a.addr, &p->bcast,
1241                             sizeof(struct pf_addr));
1242                 else if (flags & PFI_AFLAG_PEER)
1243                         memcpy(&n->addr.v.a.addr, &p->peer,
1244                             sizeof(struct pf_addr));
1245                 else
1246                         memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
1247                             sizeof(struct pf_addr));
1248                 if (flags & PFI_AFLAG_NETWORK)
1249                         set_ipmask(n, unmask(&p->addr.v.a.mask, n->af));
1250                 else {
1251                         if (n->af == AF_INET) {
1252                                 if (p->ifa_flags & IFF_LOOPBACK &&
1253                                     p->ifa_flags & IFF_LINK1)
1254                                         memcpy(&n->addr.v.a.mask,
1255                                             &p->addr.v.a.mask,
1256                                             sizeof(struct pf_addr));
1257                                 else
1258                                         set_ipmask(n, 32);
1259                         } else
1260                                 set_ipmask(n, 128);
1261                 }
1262                 n->ifindex = p->ifindex;
1263
1264                 n->next = NULL;
1265                 n->tail = n;
1266                 if (h == NULL)
1267                         h = n;
1268                 else {
1269                         h->tail->next = n;
1270                         h->tail = n;
1271                 }
1272         }
1273         return (h);
1274 }
1275
1276 int
1277 ifa_skip_if(const char *filter, struct node_host *p)
1278 {
1279         int     n;
1280
1281         if (p->af != AF_INET && p->af != AF_INET6)
1282                 return (1);
1283         if (filter == NULL || !*filter)
1284                 return (0);
1285         if (!strcmp(p->ifname, filter))
1286                 return (0);     /* exact match */
1287         n = strlen(filter);
1288         if (n < 1 || n >= IFNAMSIZ)
1289                 return (1);     /* sanity check */
1290         if (filter[n-1] >= '0' && filter[n-1] <= '9')
1291                 return (1);     /* only do exact match in that case */
1292         if (strncmp(p->ifname, filter, n))
1293                 return (1);     /* prefix doesn't match */
1294         return (p->ifname[n] < '0' || p->ifname[n] > '9');
1295 }
1296
1297
1298 struct node_host *
1299 host(const char *s)
1300 {
1301         struct node_host        *h = NULL;
1302         int                      mask, v4mask, v6mask, cont = 1;
1303         char                    *p, *q, *ps;
1304
1305         if ((p = strrchr(s, '/')) != NULL) {
1306                 mask = strtol(p+1, &q, 0);
1307                 if (!q || *q || mask > 128 || q == (p+1)) {
1308                         fprintf(stderr, "invalid netmask\n");
1309                         return (NULL);
1310                 }
1311                 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
1312                         err(1, "host: malloc");
1313                 strlcpy(ps, s, strlen(s) - strlen(p) + 1);
1314                 v4mask = v6mask = mask;
1315         } else {
1316                 if ((ps = strdup(s)) == NULL)
1317                         err(1, "host: strdup");
1318                 v4mask = 32;
1319                 v6mask = 128;
1320                 mask = -1;
1321         }
1322
1323         /* interface with this name exists? */
1324         if (cont && (h = host_if(ps, mask)) != NULL)
1325                 cont = 0;
1326
1327         /* IPv4 address? */
1328         if (cont && (h = host_v4(s)) != NULL)
1329                 cont = 0;
1330
1331         /* IPv6 address? */
1332         if (cont && (h = host_v6(ps, v6mask)) != NULL)
1333                 cont = 0;
1334
1335         /* dns lookup */
1336         if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL)
1337                 cont = 0;
1338         free(ps);
1339
1340         if (h == NULL || cont == 1) {
1341                 fprintf(stderr, "no IP address found for %s\n", s);
1342                 return (NULL);
1343         }
1344         return (h);
1345 }
1346
1347 struct node_host *
1348 host_if(const char *s, int mask)
1349 {
1350         struct node_host        *n, *h = NULL;
1351         char                    *p, *ps;
1352         int                      flags = 0;
1353
1354         if ((ps = strdup(s)) == NULL)
1355                 err(1, "host_if: strdup");
1356         while ((p = strrchr(ps, ':')) != NULL) {
1357                 if (!strcmp(p+1, "network"))
1358                         flags |= PFI_AFLAG_NETWORK;
1359                 else if (!strcmp(p+1, "broadcast"))
1360                         flags |= PFI_AFLAG_BROADCAST;
1361                 else if (!strcmp(p+1, "peer"))
1362                         flags |= PFI_AFLAG_PEER;
1363                 else if (!strcmp(p+1, "0"))
1364                         flags |= PFI_AFLAG_NOALIAS;
1365                 else {
1366                         free(ps);
1367                         return (NULL);
1368                 }
1369                 *p = '\0';
1370         }
1371         if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
1372                 fprintf(stderr, "illegal combination of interface modifiers\n");
1373                 free(ps);
1374                 return (NULL);
1375         }
1376         if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
1377                 fprintf(stderr, "network or broadcast lookup, but "
1378                     "extra netmask given\n");
1379                 free(ps);
1380                 return (NULL);
1381         }
1382         if (ifa_exists(ps, 1) || !strncmp(ps, "self", IFNAMSIZ)) {
1383                 /* interface with this name exists */
1384                 h = ifa_lookup(ps, flags);
1385                 for (n = h; n != NULL && mask > -1; n = n->next)
1386                         set_ipmask(n, mask);
1387         }
1388
1389         free(ps);
1390         return (h);
1391 }
1392
1393 static struct node_host *
1394 host_v4(const char *s)
1395 {
1396         struct node_host        *h = NULL;
1397         struct in_addr           ina;
1398         int                      bits = 32;
1399
1400         memset(&ina, 0, sizeof(struct in_addr));
1401         if (strrchr(s, '/') != NULL) {
1402                 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1)
1403                         return (NULL);
1404         } else {
1405                 if (inet_pton(AF_INET, s, &ina) != 1)
1406                         return (NULL);
1407         }
1408
1409         h = calloc(1, sizeof(struct node_host));
1410         if (h == NULL)
1411                 err(1, "address: calloc");
1412         h->ifname = NULL;
1413         h->af = AF_INET;
1414         h->addr.v.a.addr.addr32[0] = ina.s_addr;
1415         set_ipmask(h, bits);
1416         h->next = NULL;
1417         h->tail = h;
1418
1419         return (h);
1420 }
1421
1422 struct node_host *
1423 host_v6(const char *s, int mask)
1424 {
1425         struct addrinfo          hints, *res;
1426         struct node_host        *h = NULL;
1427
1428         memset(&hints, 0, sizeof(hints));
1429         hints.ai_family = AF_INET6;
1430         hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1431         hints.ai_flags = AI_NUMERICHOST;
1432         if (getaddrinfo(s, "0", &hints, &res) == 0) {
1433                 h = calloc(1, sizeof(struct node_host));
1434                 if (h == NULL)
1435                         err(1, "address: calloc");
1436                 h->ifname = NULL;
1437                 h->af = AF_INET6;
1438                 memcpy(&h->addr.v.a.addr,
1439                     &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
1440                     sizeof(h->addr.v.a.addr));
1441                 h->ifindex =
1442                     ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1443                 set_ipmask(h, mask);
1444                 freeaddrinfo(res);
1445                 h->next = NULL;
1446                 h->tail = h;
1447         }
1448
1449         return (h);
1450 }
1451
1452 struct node_host *
1453 host_dns(const char *s, int v4mask, int v6mask)
1454 {
1455         struct addrinfo          hints, *res0, *res;
1456         struct node_host        *n, *h = NULL;
1457         int                      error, noalias = 0;
1458         int                      got4 = 0, got6 = 0;
1459         char                    *p, *ps;
1460
1461         if ((ps = strdup(s)) == NULL)
1462                 err(1, "host_if: strdup");
1463         if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
1464                 noalias = 1;
1465                 *p = '\0';
1466         }
1467         memset(&hints, 0, sizeof(hints));
1468         hints.ai_family = PF_UNSPEC;
1469         hints.ai_socktype = SOCK_STREAM; /* DUMMY */
1470         error = getaddrinfo(ps, NULL, &hints, &res0);
1471         if (error)
1472                 return (h);
1473
1474         for (res = res0; res; res = res->ai_next) {
1475                 if (res->ai_family != AF_INET &&
1476                     res->ai_family != AF_INET6)
1477                         continue;
1478                 if (noalias) {
1479                         if (res->ai_family == AF_INET) {
1480                                 if (got4)
1481                                         continue;
1482                                 got4 = 1;
1483                         } else {
1484                                 if (got6)
1485                                         continue;
1486                                 got6 = 1;
1487                         }
1488                 }
1489                 n = calloc(1, sizeof(struct node_host));
1490                 if (n == NULL)
1491                         err(1, "host_dns: calloc");
1492                 n->ifname = NULL;
1493                 n->af = res->ai_family;
1494                 if (res->ai_family == AF_INET) {
1495                         memcpy(&n->addr.v.a.addr,
1496                             &((struct sockaddr_in *)
1497                             res->ai_addr)->sin_addr.s_addr,
1498                             sizeof(struct in_addr));
1499                         set_ipmask(n, v4mask);
1500                 } else {
1501                         memcpy(&n->addr.v.a.addr,
1502                             &((struct sockaddr_in6 *)
1503                             res->ai_addr)->sin6_addr.s6_addr,
1504                             sizeof(struct in6_addr));
1505                         n->ifindex =
1506                             ((struct sockaddr_in6 *)
1507                             res->ai_addr)->sin6_scope_id;
1508                         set_ipmask(n, v6mask);
1509                 }
1510                 n->next = NULL;
1511                 n->tail = n;
1512                 if (h == NULL)
1513                         h = n;
1514                 else {
1515                         h->tail->next = n;
1516                         h->tail = n;
1517                 }
1518         }
1519         freeaddrinfo(res0);
1520         free(ps);
1521
1522         return (h);
1523 }
1524
1525 /*
1526  * convert a hostname to a list of addresses and put them in the given buffer.
1527  * test:
1528  *      if set to 1, only simple addresses are accepted (no netblock, no "!").
1529  */
1530 int
1531 append_addr(struct pfr_buffer *b, char *s, int test)
1532 {
1533         char                     *r;
1534         struct node_host        *h, *n;
1535         int                      rv, not = 0;
1536
1537         for (r = s; *r == '!'; r++)
1538                 not = !not;
1539         if ((n = host(r)) == NULL) {
1540                 errno = 0;
1541                 return (-1);
1542         }
1543         rv = append_addr_host(b, n, test, not);
1544         do {
1545                 h = n;
1546                 n = n->next;
1547                 free(h);
1548         } while (n != NULL);
1549         return (rv);
1550 }
1551
1552 /*
1553  * same as previous function, but with a pre-parsed input and the ability
1554  * to "negate" the result. Does not free the node_host list.
1555  * not:
1556  *      setting it to 1 is equivalent to adding "!" in front of parameter s.
1557  */
1558 int
1559 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
1560 {
1561         int                      bits;
1562         struct pfr_addr          addr;
1563
1564         do {
1565                 bzero(&addr, sizeof(addr));
1566                 addr.pfra_not = n->not ^ not;
1567                 addr.pfra_af = n->af;
1568                 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af);
1569                 switch (n->af) {
1570                 case AF_INET:
1571                         addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
1572                         bits = 32;
1573                         break;
1574                 case AF_INET6:
1575                         memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
1576                             sizeof(struct in6_addr));
1577                         bits = 128;
1578                         break;
1579                 default:
1580                         errno = EINVAL;
1581                         return (-1);
1582                 }
1583                 if ((test && (not || addr.pfra_net != bits)) ||
1584                     addr.pfra_net > bits) {
1585                         errno = EINVAL;
1586                         return (-1);
1587                 }
1588                 if (pfr_buf_add(b, &addr))
1589                         return (-1);
1590         } while ((n = n->next) != NULL);
1591
1592         return (0);
1593 }
1594
1595 int
1596 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor,
1597     const char *ruleset)
1598 {
1599         struct pfioc_trans_e trans;
1600
1601         bzero(&trans, sizeof(trans));
1602         trans.rs_num = rs_num;
1603         if (strlcpy(trans.anchor, anchor,
1604             sizeof(trans.anchor)) >= sizeof(trans.anchor) ||
1605             strlcpy(trans.ruleset, ruleset,
1606             sizeof(trans.ruleset)) >= sizeof(trans.ruleset))
1607                 errx(1, "pfctl_add_trans: strlcpy");
1608
1609         return pfr_buf_add(buf, &trans);
1610 }
1611
1612 u_int32_t
1613 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor,
1614     const char *ruleset)
1615 {
1616         const struct pfioc_trans_e *p;
1617
1618         PFRB_FOREACH(p, buf)
1619                 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor) &&
1620                     !strcmp(ruleset, p->ruleset))
1621                         return (p->ticket);
1622         errx(1, "pfr_get_ticket: assertion failed");
1623 }
1624
1625 int
1626 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
1627 {
1628         struct pfioc_trans trans;
1629
1630         bzero(&trans, sizeof(trans));
1631         trans.size = buf->pfrb_size - from;
1632         trans.esize = sizeof(struct pfioc_trans_e);
1633         trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
1634         return ioctl(dev, cmd, &trans);
1635 }