sbin/pfctl/pfctl_parser.c

   1 /*      $OpenBSD: pfctl_parser.c,v 1.240 2008/06/10 20:55:02 mcbride Exp $ */
   2
   3 /*-
   4  * SPDX-License-Identifier: BSD-2-Clause
   5  *
   6  * Copyright (c) 2001 Daniel Hartmeier
   7  * Copyright (c) 2002,2003 Henning Brauer
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  *
  14  *    - Redistributions of source code must retain the above copyright
  15  *      notice, this list of conditions and the following disclaimer.
  16  *    - Redistributions in binary form must reproduce the above
  17  *      copyright notice, this list of conditions and the following
  18  *      disclaimer in the documentation and/or other materials provided
  19  *      with the distribution.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  29  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  31  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32  * POSSIBILITY OF SUCH DAMAGE.
  33  *
  34  */
  35
  36 #include <sys/cdefs.h>
  37 __FBSDID("$FreeBSD$");
  38
  39 #include <sys/types.h>
  40 #include <sys/ioctl.h>
  41 #include <sys/socket.h>
  42 #include <sys/param.h>
  43 #include <sys/proc.h>
  44 #include <net/if.h>
  45 #include <netinet/in.h>
  46 #include <netinet/in_systm.h>
  47 #include <netinet/ip.h>
  48 #include <netinet/ip_icmp.h>
  49 #include <netinet/icmp6.h>
  50 #include <net/pfvar.h>
  51 #include <arpa/inet.h>
  52
  53 #include <search.h>
  54 #include <stdio.h>
  55 #include <stdlib.h>
  56 #include <string.h>
  57 #include <ctype.h>
  58 #include <netdb.h>
  59 #include <stdarg.h>
  60 #include <errno.h>
  61 #include <err.h>
  62 #include <ifaddrs.h>
  63 #include <unistd.h>
  64
  65 #include "pfctl_parser.h"
  66 #include "pfctl.h"
  67
  68 void             print_op (u_int8_t, const char *, const char *);
  69 void             print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int);
  70 void             print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned);
  71 void             print_flags (u_int8_t);
  72 void             print_fromto(struct pf_rule_addr *, pf_osfp_t,
  73                     struct pf_rule_addr *, u_int8_t, u_int8_t, int, int);
  74 int              ifa_skip_if(const char *filter, struct node_host *p);
  75
  76 struct node_host        *host_if(const char *, int);
  77 struct node_host        *host_v4(const char *, int);
  78 struct node_host        *host_v6(const char *, int);
  79 struct node_host        *host_dns(const char *, int, int);
  80
  81 const char * const tcpflags = "FSRPAUEW";
  82
  83 static const struct icmptypeent icmp_type[] = {
  84         { "echoreq",    ICMP_ECHO },
  85         { "echorep",    ICMP_ECHOREPLY },
  86         { "unreach",    ICMP_UNREACH },
  87         { "squench",    ICMP_SOURCEQUENCH },
  88         { "redir",      ICMP_REDIRECT },
  89         { "althost",    ICMP_ALTHOSTADDR },
  90         { "routeradv",  ICMP_ROUTERADVERT },
  91         { "routersol",  ICMP_ROUTERSOLICIT },
  92         { "timex",      ICMP_TIMXCEED },
  93         { "paramprob",  ICMP_PARAMPROB },
  94         { "timereq",    ICMP_TSTAMP },
  95         { "timerep",    ICMP_TSTAMPREPLY },
  96         { "inforeq",    ICMP_IREQ },
  97         { "inforep",    ICMP_IREQREPLY },
  98         { "maskreq",    ICMP_MASKREQ },
  99         { "maskrep",    ICMP_MASKREPLY },
 100         { "trace",      ICMP_TRACEROUTE },
 101         { "dataconv",   ICMP_DATACONVERR },
 102         { "mobredir",   ICMP_MOBILE_REDIRECT },
 103         { "ipv6-where", ICMP_IPV6_WHEREAREYOU },
 104         { "ipv6-here",  ICMP_IPV6_IAMHERE },
 105         { "mobregreq",  ICMP_MOBILE_REGREQUEST },
 106         { "mobregrep",  ICMP_MOBILE_REGREPLY },
 107         { "skip",       ICMP_SKIP },
 108         { "photuris",   ICMP_PHOTURIS }
 109 };
 110
 111 static const struct icmptypeent icmp6_type[] = {
 112         { "unreach",    ICMP6_DST_UNREACH },
 113         { "toobig",     ICMP6_PACKET_TOO_BIG },
 114         { "timex",      ICMP6_TIME_EXCEEDED },
 115         { "paramprob",  ICMP6_PARAM_PROB },
 116         { "echoreq",    ICMP6_ECHO_REQUEST },
 117         { "echorep",    ICMP6_ECHO_REPLY },
 118         { "groupqry",   ICMP6_MEMBERSHIP_QUERY },
 119         { "listqry",    MLD_LISTENER_QUERY },
 120         { "grouprep",   ICMP6_MEMBERSHIP_REPORT },
 121         { "listenrep",  MLD_LISTENER_REPORT },
 122         { "groupterm",  ICMP6_MEMBERSHIP_REDUCTION },
 123         { "listendone", MLD_LISTENER_DONE },
 124         { "routersol",  ND_ROUTER_SOLICIT },
 125         { "routeradv",  ND_ROUTER_ADVERT },
 126         { "neighbrsol", ND_NEIGHBOR_SOLICIT },
 127         { "neighbradv", ND_NEIGHBOR_ADVERT },
 128         { "redir",      ND_REDIRECT },
 129         { "routrrenum", ICMP6_ROUTER_RENUMBERING },
 130         { "wrureq",     ICMP6_WRUREQUEST },
 131         { "wrurep",     ICMP6_WRUREPLY },
 132         { "fqdnreq",    ICMP6_FQDN_QUERY },
 133         { "fqdnrep",    ICMP6_FQDN_REPLY },
 134         { "niqry",      ICMP6_NI_QUERY },
 135         { "nirep",      ICMP6_NI_REPLY },
 136         { "mtraceresp", MLD_MTRACE_RESP },
 137         { "mtrace",     MLD_MTRACE }
 138 };
 139
 140 static const struct icmpcodeent icmp_code[] = {
 141         { "net-unr",            ICMP_UNREACH,   ICMP_UNREACH_NET },
 142         { "host-unr",           ICMP_UNREACH,   ICMP_UNREACH_HOST },
 143         { "proto-unr",          ICMP_UNREACH,   ICMP_UNREACH_PROTOCOL },
 144         { "port-unr",           ICMP_UNREACH,   ICMP_UNREACH_PORT },
 145         { "needfrag",           ICMP_UNREACH,   ICMP_UNREACH_NEEDFRAG },
 146         { "srcfail",            ICMP_UNREACH,   ICMP_UNREACH_SRCFAIL },
 147         { "net-unk",            ICMP_UNREACH,   ICMP_UNREACH_NET_UNKNOWN },
 148         { "host-unk",           ICMP_UNREACH,   ICMP_UNREACH_HOST_UNKNOWN },
 149         { "isolate",            ICMP_UNREACH,   ICMP_UNREACH_ISOLATED },
 150         { "net-prohib",         ICMP_UNREACH,   ICMP_UNREACH_NET_PROHIB },
 151         { "host-prohib",        ICMP_UNREACH,   ICMP_UNREACH_HOST_PROHIB },
 152         { "net-tos",            ICMP_UNREACH,   ICMP_UNREACH_TOSNET },
 153         { "host-tos",           ICMP_UNREACH,   ICMP_UNREACH_TOSHOST },
 154         { "filter-prohib",      ICMP_UNREACH,   ICMP_UNREACH_FILTER_PROHIB },
 155         { "host-preced",        ICMP_UNREACH,   ICMP_UNREACH_HOST_PRECEDENCE },
 156         { "cutoff-preced",      ICMP_UNREACH,   ICMP_UNREACH_PRECEDENCE_CUTOFF },
 157         { "redir-net",          ICMP_REDIRECT,  ICMP_REDIRECT_NET },
 158         { "redir-host",         ICMP_REDIRECT,  ICMP_REDIRECT_HOST },
 159         { "redir-tos-net",      ICMP_REDIRECT,  ICMP_REDIRECT_TOSNET },
 160         { "redir-tos-host",     ICMP_REDIRECT,  ICMP_REDIRECT_TOSHOST },
 161         { "normal-adv",         ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL },
 162         { "common-adv",         ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON },
 163         { "transit",            ICMP_TIMXCEED,  ICMP_TIMXCEED_INTRANS },
 164         { "reassemb",           ICMP_TIMXCEED,  ICMP_TIMXCEED_REASS },
 165         { "badhead",            ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR },
 166         { "optmiss",            ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT },
 167         { "badlen",             ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH },
 168         { "unknown-ind",        ICMP_PHOTURIS,  ICMP_PHOTURIS_UNKNOWN_INDEX },
 169         { "auth-fail",          ICMP_PHOTURIS,  ICMP_PHOTURIS_AUTH_FAILED },
 170         { "decrypt-fail",       ICMP_PHOTURIS,  ICMP_PHOTURIS_DECRYPT_FAILED }
 171 };
 172
 173 static const struct icmpcodeent icmp6_code[] = {
 174         { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN },
 175         { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE },
 176         { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR },
 177         { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE },
 178         { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR },
 179         { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT },
 180         { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT },
 181         { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY },
 182         { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER },
 183         { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER },
 184         { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK },
 185         { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER }
 186 };
 187
 188 const struct pf_timeout pf_timeouts[] = {
 189         { "tcp.first",          PFTM_TCP_FIRST_PACKET },
 190         { "tcp.opening",        PFTM_TCP_OPENING },
 191         { "tcp.established",    PFTM_TCP_ESTABLISHED },
 192         { "tcp.closing",        PFTM_TCP_CLOSING },
 193         { "tcp.finwait",        PFTM_TCP_FIN_WAIT },
 194         { "tcp.closed",         PFTM_TCP_CLOSED },
 195         { "tcp.tsdiff",         PFTM_TS_DIFF },
 196         { "udp.first",          PFTM_UDP_FIRST_PACKET },
 197         { "udp.single",         PFTM_UDP_SINGLE },
 198         { "udp.multiple",       PFTM_UDP_MULTIPLE },
 199         { "icmp.first",         PFTM_ICMP_FIRST_PACKET },
 200         { "icmp.error",         PFTM_ICMP_ERROR_REPLY },
 201         { "other.first",        PFTM_OTHER_FIRST_PACKET },
 202         { "other.single",       PFTM_OTHER_SINGLE },
 203         { "other.multiple",     PFTM_OTHER_MULTIPLE },
 204         { "frag",               PFTM_FRAG },
 205         { "interval",           PFTM_INTERVAL },
 206         { "adaptive.start",     PFTM_ADAPTIVE_START },
 207         { "adaptive.end",       PFTM_ADAPTIVE_END },
 208         { "src.track",          PFTM_SRC_NODE },
 209         { NULL,                 0 }
 210 };
 211
 212 static struct hsearch_data isgroup_map;
 213
 214 static __attribute__((constructor)) void
 215 pfctl_parser_init(void)
 216 {
 217         /*
 218          * As hdestroy() will never be called on these tables, it will be
 219          * safe to use references into the stored data as keys.
 220          */
 221         if (hcreate_r(0, &isgroup_map) == 0)
 222                 err(1, "Failed to create interface group query response map");
 223 }
 224
 225 const struct icmptypeent *
 226 geticmptypebynumber(u_int8_t type, sa_family_t af)
 227 {
 228         unsigned int    i;
 229
 230         if (af != AF_INET6) {
 231                 for (i=0; i < nitems(icmp_type); i++) {
 232                         if (type == icmp_type[i].type)
 233                                 return (&icmp_type[i]);
 234                 }
 235         } else {
 236                 for (i=0; i < nitems(icmp6_type); i++) {
 237                         if (type == icmp6_type[i].type)
 238                                  return (&icmp6_type[i]);
 239                 }
 240         }
 241         return (NULL);
 242 }
 243
 244 const struct icmptypeent *
 245 geticmptypebyname(char *w, sa_family_t af)
 246 {
 247         unsigned int    i;
 248
 249         if (af != AF_INET6) {
 250                 for (i=0; i < nitems(icmp_type); i++) {
 251                         if (!strcmp(w, icmp_type[i].name))
 252                                 return (&icmp_type[i]);
 253                 }
 254         } else {
 255                 for (i=0; i < nitems(icmp6_type); i++) {
 256                         if (!strcmp(w, icmp6_type[i].name))
 257                                 return (&icmp6_type[i]);
 258                 }
 259         }
 260         return (NULL);
 261 }
 262
 263 const struct icmpcodeent *
 264 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af)
 265 {
 266         unsigned int    i;
 267
 268         if (af != AF_INET6) {
 269                 for (i=0; i < nitems(icmp_code); i++) {
 270                         if (type == icmp_code[i].type &&
 271                             code == icmp_code[i].code)
 272                                 return (&icmp_code[i]);
 273                 }
 274         } else {
 275                 for (i=0; i < nitems(icmp6_code); i++) {
 276                         if (type == icmp6_code[i].type &&
 277                             code == icmp6_code[i].code)
 278                                 return (&icmp6_code[i]);
 279                 }
 280         }
 281         return (NULL);
 282 }
 283
 284 const struct icmpcodeent *
 285 geticmpcodebyname(u_long type, char *w, sa_family_t af)
 286 {
 287         unsigned int    i;
 288
 289         if (af != AF_INET6) {
 290                 for (i=0; i < nitems(icmp_code); i++) {
 291                         if (type == icmp_code[i].type &&
 292                             !strcmp(w, icmp_code[i].name))
 293                                 return (&icmp_code[i]);
 294                 }
 295         } else {
 296                 for (i=0; i < nitems(icmp6_code); i++) {
 297                         if (type == icmp6_code[i].type &&
 298                             !strcmp(w, icmp6_code[i].name))
 299                                 return (&icmp6_code[i]);
 300                 }
 301         }
 302         return (NULL);
 303 }
 304
 305 void
 306 print_op(u_int8_t op, const char *a1, const char *a2)
 307 {
 308         if (op == PF_OP_IRG)
 309                 printf(" %s >< %s", a1, a2);
 310         else if (op == PF_OP_XRG)
 311                 printf(" %s <> %s", a1, a2);
 312         else if (op == PF_OP_EQ)
 313                 printf(" = %s", a1);
 314         else if (op == PF_OP_NE)
 315                 printf(" != %s", a1);
 316         else if (op == PF_OP_LT)
 317                 printf(" < %s", a1);
 318         else if (op == PF_OP_LE)
 319                 printf(" <= %s", a1);
 320         else if (op == PF_OP_GT)
 321                 printf(" > %s", a1);
 322         else if (op == PF_OP_GE)
 323                 printf(" >= %s", a1);
 324         else if (op == PF_OP_RRG)
 325                 printf(" %s:%s", a1, a2);
 326 }
 327
 328 void
 329 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric)
 330 {
 331         char             a1[6], a2[6];
 332         struct servent  *s;
 333
 334         if (!numeric)
 335                 s = getservbyport(p1, proto);
 336         else
 337                 s = NULL;
 338         p1 = ntohs(p1);
 339         p2 = ntohs(p2);
 340         snprintf(a1, sizeof(a1), "%u", p1);
 341         snprintf(a2, sizeof(a2), "%u", p2);
 342         printf(" port");
 343         if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE))
 344                 print_op(op, s->s_name, a2);
 345         else
 346                 print_op(op, a1, a2);
 347 }
 348
 349 void
 350 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax)
 351 {
 352         char    a1[11], a2[11];
 353
 354         snprintf(a1, sizeof(a1), "%u", u1);
 355         snprintf(a2, sizeof(a2), "%u", u2);
 356         printf(" %s", t);
 357         if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE))
 358                 print_op(op, "unknown", a2);
 359         else
 360                 print_op(op, a1, a2);
 361 }
 362
 363 void
 364 print_flags(u_int8_t f)
 365 {
 366         int     i;
 367
 368         for (i = 0; tcpflags[i]; ++i)
 369                 if (f & (1 << i))
 370                         printf("%c", tcpflags[i]);
 371 }
 372
 373 void
 374 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst,
 375     sa_family_t af, u_int8_t proto, int verbose, int numeric)
 376 {
 377         char buf[PF_OSFP_LEN*3];
 378         if (src->addr.type == PF_ADDR_ADDRMASK &&
 379             dst->addr.type == PF_ADDR_ADDRMASK &&
 380             PF_AZERO(&src->addr.v.a.addr, AF_INET6) &&
 381             PF_AZERO(&src->addr.v.a.mask, AF_INET6) &&
 382             PF_AZERO(&dst->addr.v.a.addr, AF_INET6) &&
 383             PF_AZERO(&dst->addr.v.a.mask, AF_INET6) &&
 384             !src->neg && !dst->neg &&
 385             !src->port_op && !dst->port_op &&
 386             osfp == PF_OSFP_ANY)
 387                 printf(" all");
 388         else {
 389                 printf(" from ");
 390                 if (src->neg)
 391                         printf("! ");
 392                 print_addr(&src->addr, af, verbose);
 393                 if (src->port_op)
 394                         print_port(src->port_op, src->port[0],
 395                             src->port[1],
 396                             proto == IPPROTO_TCP ? "tcp" : "udp",
 397                             numeric);
 398                 if (osfp != PF_OSFP_ANY)
 399                         printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf,
 400                             sizeof(buf)));
 401
 402                 printf(" to ");
 403                 if (dst->neg)
 404                         printf("! ");
 405                 print_addr(&dst->addr, af, verbose);
 406                 if (dst->port_op)
 407                         print_port(dst->port_op, dst->port[0],
 408                             dst->port[1],
 409                             proto == IPPROTO_TCP ? "tcp" : "udp",
 410                             numeric);
 411         }
 412 }
 413
 414 void
 415 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2,
 416     sa_family_t af, int id)
 417 {
 418         struct pf_pooladdr      *pooladdr;
 419
 420         if ((TAILQ_FIRST(&pool->list) != NULL) &&
 421             TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
 422                 printf("{ ");
 423         TAILQ_FOREACH(pooladdr, &pool->list, entries){
 424                 switch (id) {
 425                 case PF_NAT:
 426                 case PF_RDR:
 427                 case PF_BINAT:
 428                         print_addr(&pooladdr->addr, af, 0);
 429                         break;
 430                 case PF_PASS:
 431                         if (PF_AZERO(&pooladdr->addr.v.a.addr, af))
 432                                 printf("%s", pooladdr->ifname);
 433                         else {
 434                                 printf("(%s ", pooladdr->ifname);
 435                                 print_addr(&pooladdr->addr, af, 0);
 436                                 printf(")");
 437                         }
 438                         break;
 439                 default:
 440                         break;
 441                 }
 442                 if (TAILQ_NEXT(pooladdr, entries) != NULL)
 443                         printf(", ");
 444                 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
 445                         printf(" }");
 446         }
 447         switch (id) {
 448         case PF_NAT:
 449                 if ((p1 != PF_NAT_PROXY_PORT_LOW ||
 450                     p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) {
 451                         if (p1 == p2)
 452                                 printf(" port %u", p1);
 453                         else
 454                                 printf(" port %u:%u", p1, p2);
 455                 }
 456                 break;
 457         case PF_RDR:
 458                 if (p1) {
 459                         printf(" port %u", p1);
 460                         if (p2 && (p2 != p1))
 461                                 printf(":%u", p2);
 462                 }
 463                 break;
 464         default:
 465                 break;
 466         }
 467         switch (pool->opts & PF_POOL_TYPEMASK) {
 468         case PF_POOL_NONE:
 469                 break;
 470         case PF_POOL_BITMASK:
 471                 printf(" bitmask");
 472                 break;
 473         case PF_POOL_RANDOM:
 474                 printf(" random");
 475                 break;
 476         case PF_POOL_SRCHASH:
 477                 printf(" source-hash 0x%08x%08x%08x%08x",
 478                     pool->key.key32[0], pool->key.key32[1],
 479                     pool->key.key32[2], pool->key.key32[3]);
 480                 break;
 481         case PF_POOL_ROUNDROBIN:
 482                 printf(" round-robin");
 483                 break;
 484         }
 485         if (pool->opts & PF_POOL_STICKYADDR)
 486                 printf(" sticky-address");
 487         if (id == PF_NAT && p1 == 0 && p2 == 0)
 488                 printf(" static-port");
 489         if (pool->mape.offset > 0)
 490                 printf(" map-e-portset %u/%u/%u",
 491                     pool->mape.offset, pool->mape.psidlen, pool->mape.psid);
 492 }
 493
 494 const char      * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES;
 495 const char      * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES;
 496 const char      * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES;
 497 const char      * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES;
 498
 499 void
 500 print_status(struct pf_status *s, struct pfctl_syncookies *cookies, int opts)
 501 {
 502         char                    statline[80], *running;
 503         time_t                  runtime;
 504         int                     i;
 505         char                    buf[PF_MD5_DIGEST_LENGTH * 2 + 1];
 506         static const char       hex[] = "0123456789abcdef";
 507
 508         runtime = time(NULL) - s->since;
 509         running = s->running ? "Enabled" : "Disabled";
 510
 511         if (s->since) {
 512                 unsigned int    sec, min, hrs, day = runtime;
 513
 514                 sec = day % 60;
 515                 day /= 60;
 516                 min = day % 60;
 517                 day /= 60;
 518                 hrs = day % 24;
 519                 day /= 24;
 520                 snprintf(statline, sizeof(statline),
 521                     "Status: %s for %u days %.2u:%.2u:%.2u",
 522                     running, day, hrs, min, sec);
 523         } else
 524                 snprintf(statline, sizeof(statline), "Status: %s", running);
 525         printf("%-44s", statline);
 526         switch (s->debug) {
 527         case PF_DEBUG_NONE:
 528                 printf("%15s\n\n", "Debug: None");
 529                 break;
 530         case PF_DEBUG_URGENT:
 531                 printf("%15s\n\n", "Debug: Urgent");
 532                 break;
 533         case PF_DEBUG_MISC:
 534                 printf("%15s\n\n", "Debug: Misc");
 535                 break;
 536         case PF_DEBUG_NOISY:
 537                 printf("%15s\n\n", "Debug: Loud");
 538                 break;
 539         }
 540
 541         if (opts & PF_OPT_VERBOSE) {
 542                 printf("Hostid:   0x%08x\n", ntohl(s->hostid));
 543
 544                 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) {
 545                         buf[i + i] = hex[s->pf_chksum[i] >> 4];
 546                         buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f];
 547                 }
 548                 buf[i + i] = '\0';
 549                 printf("Checksum: 0x%s\n\n", buf);
 550         }
 551
 552         if (s->ifname[0] != 0) {
 553                 printf("Interface Stats for %-16s %5s %16s\n",
 554                     s->ifname, "IPv4", "IPv6");
 555                 printf("  %-25s %14llu %16llu\n", "Bytes In",
 556                     (unsigned long long)s->bcounters[0][0],
 557                     (unsigned long long)s->bcounters[1][0]);
 558                 printf("  %-25s %14llu %16llu\n", "Bytes Out",
 559                     (unsigned long long)s->bcounters[0][1],
 560                     (unsigned long long)s->bcounters[1][1]);
 561                 printf("  Packets In\n");
 562                 printf("    %-23s %14llu %16llu\n", "Passed",
 563                     (unsigned long long)s->pcounters[0][0][PF_PASS],
 564                     (unsigned long long)s->pcounters[1][0][PF_PASS]);
 565                 printf("    %-23s %14llu %16llu\n", "Blocked",
 566                     (unsigned long long)s->pcounters[0][0][PF_DROP],
 567                     (unsigned long long)s->pcounters[1][0][PF_DROP]);
 568                 printf("  Packets Out\n");
 569                 printf("    %-23s %14llu %16llu\n", "Passed",
 570                     (unsigned long long)s->pcounters[0][1][PF_PASS],
 571                     (unsigned long long)s->pcounters[1][1][PF_PASS]);
 572                 printf("    %-23s %14llu %16llu\n\n", "Blocked",
 573                     (unsigned long long)s->pcounters[0][1][PF_DROP],
 574                     (unsigned long long)s->pcounters[1][1][PF_DROP]);
 575         }
 576         printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
 577         printf("  %-25s %14u %14s\n", "current entries", s->states, "");
 578         for (i = 0; i < FCNT_MAX; i++) {
 579                 printf("  %-25s %14llu ", pf_fcounters[i],
 580                             (unsigned long long)s->fcounters[i]);
 581                 if (runtime > 0)
 582                         printf("%14.1f/s\n",
 583                             (double)s->fcounters[i] / (double)runtime);
 584                 else
 585                         printf("%14s\n", "");
 586         }
 587         if (opts & PF_OPT_VERBOSE) {
 588                 printf("Source Tracking Table\n");
 589                 printf("  %-25s %14u %14s\n", "current entries",
 590                     s->src_nodes, "");
 591                 for (i = 0; i < SCNT_MAX; i++) {
 592                         printf("  %-25s %14lld ", pf_scounters[i],
 593 #ifdef __FreeBSD__
 594                                     (long long)s->scounters[i]);
 595 #else
 596                                     s->scounters[i]);
 597 #endif
 598                         if (runtime > 0)
 599                                 printf("%14.1f/s\n",
 600                                     (double)s->scounters[i] / (double)runtime);
 601                         else
 602                                 printf("%14s\n", "");
 603                 }
 604         }
 605         printf("Counters\n");
 606         for (i = 0; i < PFRES_MAX; i++) {
 607                 printf("  %-25s %14llu ", pf_reasons[i],
 608                     (unsigned long long)s->counters[i]);
 609                 if (runtime > 0)
 610                         printf("%14.1f/s\n",
 611                             (double)s->counters[i] / (double)runtime);
 612                 else
 613                         printf("%14s\n", "");
 614         }
 615         if (opts & PF_OPT_VERBOSE) {
 616                 printf("Limit Counters\n");
 617                 for (i = 0; i < LCNT_MAX; i++) {
 618                         printf("  %-25s %14lld ", pf_lcounters[i],
 619 #ifdef __FreeBSD__
 620                                     (unsigned long long)s->lcounters[i]);
 621 #else
 622                                     s->lcounters[i]);
 623 #endif
 624                         if (runtime > 0)
 625                                 printf("%14.1f/s\n",
 626                                     (double)s->lcounters[i] / (double)runtime);
 627                         else
 628                                 printf("%14s\n", "");
 629                 }
 630
 631                 printf("Syncookies\n");
 632                 printf("  %-25s %s\n", "mode",
 633                     cookies->mode == PFCTL_SYNCOOKIES_NEVER ?
 634                     "never" : "always");
 635         }
 636 }
 637
 638 void
 639 print_running(struct pf_status *status)
 640 {
 641         printf("%s\n", status->running ? "Enabled" : "Disabled");
 642 }
 643
 644 void
 645 print_src_node(struct pf_src_node *sn, int opts)
 646 {
 647         struct pf_addr_wrap aw;
 648         int min, sec;
 649
 650         memset(&aw, 0, sizeof(aw));
 651         if (sn->af == AF_INET)
 652                 aw.v.a.mask.addr32[0] = 0xffffffff;
 653         else
 654                 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
 655
 656         aw.v.a.addr = sn->addr;
 657         print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
 658         printf(" -> ");
 659         aw.v.a.addr = sn->raddr;
 660         print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
 661         printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states,
 662             sn->conn, sn->conn_rate.count / 1000,
 663             (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds);
 664         if (opts & PF_OPT_VERBOSE) {
 665                 sec = sn->creation % 60;
 666                 sn->creation /= 60;
 667                 min = sn->creation % 60;
 668                 sn->creation /= 60;
 669                 printf("   age %.2u:%.2u:%.2u", sn->creation, min, sec);
 670                 if (sn->states == 0) {
 671                         sec = sn->expire % 60;
 672                         sn->expire /= 60;
 673                         min = sn->expire % 60;
 674                         sn->expire /= 60;
 675                         printf(", expires in %.2u:%.2u:%.2u",
 676                             sn->expire, min, sec);
 677                 }
 678                 printf(", %llu pkts, %llu bytes",
 679 #ifdef __FreeBSD__
 680                     (unsigned long long)(sn->packets[0] + sn->packets[1]),
 681                     (unsigned long long)(sn->bytes[0] + sn->bytes[1]));
 682 #else
 683                     sn->packets[0] + sn->packets[1],
 684                     sn->bytes[0] + sn->bytes[1]);
 685 #endif
 686                 switch (sn->ruletype) {
 687                 case PF_NAT:
 688                         if (sn->rule.nr != -1)
 689                                 printf(", nat rule %u", sn->rule.nr);
 690                         break;
 691                 case PF_RDR:
 692                         if (sn->rule.nr != -1)
 693                                 printf(", rdr rule %u", sn->rule.nr);
 694                         break;
 695                 case PF_PASS:
 696                         if (sn->rule.nr != -1)
 697                                 printf(", filter rule %u", sn->rule.nr);
 698                         break;
 699                 }
 700                 printf("\n");
 701         }
 702 }
 703
 704 void
 705 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric)
 706 {
 707         static const char *actiontypes[] = { "pass", "block", "scrub",
 708             "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" };
 709         static const char *anchortypes[] = { "anchor", "anchor", "anchor",
 710             "anchor", "nat-anchor", "nat-anchor", "binat-anchor",
 711             "binat-anchor", "rdr-anchor", "rdr-anchor" };
 712         int     i, opts;
 713
 714         if (verbose)
 715                 printf("@%d ", r->nr);
 716         if (r->action == PF_MATCH)
 717                 printf("match");
 718         else if (r->action > PF_NORDR)
 719                 printf("action(%d)", r->action);
 720         else if (anchor_call[0]) {
 721                 if (anchor_call[0] == '_') {
 722                         printf("%s", anchortypes[r->action]);
 723                 } else
 724                         printf("%s \"%s\"", anchortypes[r->action],
 725                             anchor_call);
 726         } else {
 727                 printf("%s", actiontypes[r->action]);
 728                 if (r->natpass)
 729                         printf(" pass");
 730         }
 731         if (r->action == PF_DROP) {
 732                 if (r->rule_flag & PFRULE_RETURN)
 733                         printf(" return");
 734                 else if (r->rule_flag & PFRULE_RETURNRST) {
 735                         if (!r->return_ttl)
 736                                 printf(" return-rst");
 737                         else
 738                                 printf(" return-rst(ttl %d)", r->return_ttl);
 739                 } else if (r->rule_flag & PFRULE_RETURNICMP) {
 740                         const struct icmpcodeent        *ic, *ic6;
 741
 742                         ic = geticmpcodebynumber(r->return_icmp >> 8,
 743                             r->return_icmp & 255, AF_INET);
 744                         ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
 745                             r->return_icmp6 & 255, AF_INET6);
 746
 747                         switch (r->af) {
 748                         case AF_INET:
 749                                 printf(" return-icmp");
 750                                 if (ic == NULL)
 751                                         printf("(%u)", r->return_icmp & 255);
 752                                 else
 753                                         printf("(%s)", ic->name);
 754                                 break;
 755                         case AF_INET6:
 756                                 printf(" return-icmp6");
 757                                 if (ic6 == NULL)
 758                                         printf("(%u)", r->return_icmp6 & 255);
 759                                 else
 760                                         printf("(%s)", ic6->name);
 761                                 break;
 762                         default:
 763                                 printf(" return-icmp");
 764                                 if (ic == NULL)
 765                                         printf("(%u, ", r->return_icmp & 255);
 766                                 else
 767                                         printf("(%s, ", ic->name);
 768                                 if (ic6 == NULL)
 769                                         printf("%u)", r->return_icmp6 & 255);
 770                                 else
 771                                         printf("%s)", ic6->name);
 772                                 break;
 773                         }
 774                 } else
 775                         printf(" drop");
 776         }
 777         if (r->direction == PF_IN)
 778                 printf(" in");
 779         else if (r->direction == PF_OUT)
 780                 printf(" out");
 781         if (r->log) {
 782                 printf(" log");
 783                 if (r->log & ~PF_LOG || r->logif) {
 784                         int count = 0;
 785
 786                         printf(" (");
 787                         if (r->log & PF_LOG_ALL)
 788                                 printf("%sall", count++ ? ", " : "");
 789                         if (r->log & PF_LOG_SOCKET_LOOKUP)
 790                                 printf("%suser", count++ ? ", " : "");
 791                         if (r->logif)
 792                                 printf("%sto pflog%u", count++ ? ", " : "",
 793                                     r->logif);
 794                         printf(")");
 795                 }
 796         }
 797         if (r->quick)
 798                 printf(" quick");
 799         if (r->ifname[0]) {
 800                 if (r->ifnot)
 801                         printf(" on ! %s", r->ifname);
 802                 else
 803                         printf(" on %s", r->ifname);
 804         }
 805         if (r->rt) {
 806                 if (r->rt == PF_ROUTETO)
 807                         printf(" route-to");
 808                 else if (r->rt == PF_REPLYTO)
 809                         printf(" reply-to");
 810                 else if (r->rt == PF_DUPTO)
 811                         printf(" dup-to");
 812                 printf(" ");
 813                 print_pool(&r->rpool, 0, 0, r->af, PF_PASS);
 814         }
 815         if (r->af) {
 816                 if (r->af == AF_INET)
 817                         printf(" inet");
 818                 else
 819                         printf(" inet6");
 820         }
 821         if (r->proto) {
 822                 const char *protoname;
 823
 824                 if ((protoname = pfctl_proto2name(r->proto)) != NULL)
 825                         printf(" proto %s", protoname);
 826                 else
 827                         printf(" proto %u", r->proto);
 828         }
 829         print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto,
 830             verbose, numeric);
 831         if (r->uid.op)
 832                 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user",
 833                     UID_MAX);
 834         if (r->gid.op)
 835                 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group",
 836                     GID_MAX);
 837         if (r->flags || r->flagset) {
 838                 printf(" flags ");
 839                 print_flags(r->flags);
 840                 printf("/");
 841                 print_flags(r->flagset);
 842         } else if (r->action == PF_PASS &&
 843             (!r->proto || r->proto == IPPROTO_TCP) &&
 844             !(r->rule_flag & PFRULE_FRAGMENT) &&
 845             !anchor_call[0] && r->keep_state)
 846                 printf(" flags any");
 847         if (r->type) {
 848                 const struct icmptypeent        *it;
 849
 850                 it = geticmptypebynumber(r->type-1, r->af);
 851                 if (r->af != AF_INET6)
 852                         printf(" icmp-type");
 853                 else
 854                         printf(" icmp6-type");
 855                 if (it != NULL)
 856                         printf(" %s", it->name);
 857                 else
 858                         printf(" %u", r->type-1);
 859                 if (r->code) {
 860                         const struct icmpcodeent        *ic;
 861
 862                         ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
 863                         if (ic != NULL)
 864                                 printf(" code %s", ic->name);
 865                         else
 866                                 printf(" code %u", r->code-1);
 867                 }
 868         }
 869         if (r->tos)
 870                 printf(" tos 0x%2.2x", r->tos);
 871         if (r->prio)
 872                 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio);
 873         if (r->scrub_flags & PFSTATE_SETMASK) {
 874                 char *comma = "";
 875                 printf(" set (");
 876                 if (r->scrub_flags & PFSTATE_SETPRIO) {
 877                         if (r->set_prio[0] == r->set_prio[1])
 878                                 printf("%s prio %u", comma, r->set_prio[0]);
 879                         else
 880                                 printf("%s prio(%u, %u)", comma, r->set_prio[0],
 881                                     r->set_prio[1]);
 882                         comma = ",";
 883                 }
 884                 printf(" )");
 885         }
 886         if (!r->keep_state && r->action == PF_PASS && !anchor_call[0])
 887                 printf(" no state");
 888         else if (r->keep_state == PF_STATE_NORMAL)
 889                 printf(" keep state");
 890         else if (r->keep_state == PF_STATE_MODULATE)
 891                 printf(" modulate state");
 892         else if (r->keep_state == PF_STATE_SYNPROXY)
 893                 printf(" synproxy state");
 894         if (r->prob) {
 895                 char    buf[20];
 896
 897                 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
 898                 for (i = strlen(buf)-1; i > 0; i--) {
 899                         if (buf[i] == '0')
 900                                 buf[i] = '\0';
 901                         else {
 902                                 if (buf[i] == '.')
 903                                         buf[i] = '\0';
 904                                 break;
 905                         }
 906                 }
 907                 printf(" probability %s%%", buf);
 908         }
 909         opts = 0;
 910         if (r->max_states || r->max_src_nodes || r->max_src_states)
 911                 opts = 1;
 912         if (r->rule_flag & PFRULE_NOSYNC)
 913                 opts = 1;
 914         if (r->rule_flag & PFRULE_SRCTRACK)
 915                 opts = 1;
 916         if (r->rule_flag & PFRULE_IFBOUND)
 917                 opts = 1;
 918         if (r->rule_flag & PFRULE_STATESLOPPY)
 919                 opts = 1;
 920         for (i = 0; !opts && i < PFTM_MAX; ++i)
 921                 if (r->timeout[i])
 922                         opts = 1;
 923         if (opts) {
 924                 printf(" (");
 925                 if (r->max_states) {
 926                         printf("max %u", r->max_states);
 927                         opts = 0;
 928                 }
 929                 if (r->rule_flag & PFRULE_NOSYNC) {
 930                         if (!opts)
 931                                 printf(", ");
 932                         printf("no-sync");
 933                         opts = 0;
 934                 }
 935                 if (r->rule_flag & PFRULE_SRCTRACK) {
 936                         if (!opts)
 937                                 printf(", ");
 938                         printf("source-track");
 939                         if (r->rule_flag & PFRULE_RULESRCTRACK)
 940                                 printf(" rule");
 941                         else
 942                                 printf(" global");
 943                         opts = 0;
 944                 }
 945                 if (r->max_src_states) {
 946                         if (!opts)
 947                                 printf(", ");
 948                         printf("max-src-states %u", r->max_src_states);
 949                         opts = 0;
 950                 }
 951                 if (r->max_src_conn) {
 952                         if (!opts)
 953                                 printf(", ");
 954                         printf("max-src-conn %u", r->max_src_conn);
 955                         opts = 0;
 956                 }
 957                 if (r->max_src_conn_rate.limit) {
 958                         if (!opts)
 959                                 printf(", ");
 960                         printf("max-src-conn-rate %u/%u",
 961                             r->max_src_conn_rate.limit,
 962                             r->max_src_conn_rate.seconds);
 963                         opts = 0;
 964                 }
 965                 if (r->max_src_nodes) {
 966                         if (!opts)
 967                                 printf(", ");
 968                         printf("max-src-nodes %u", r->max_src_nodes);
 969                         opts = 0;
 970                 }
 971                 if (r->overload_tblname[0]) {
 972                         if (!opts)
 973                                 printf(", ");
 974                         printf("overload <%s>", r->overload_tblname);
 975                         if (r->flush)
 976                                 printf(" flush");
 977                         if (r->flush & PF_FLUSH_GLOBAL)
 978                                 printf(" global");
 979                 }
 980                 if (r->rule_flag & PFRULE_IFBOUND) {
 981                         if (!opts)
 982                                 printf(", ");
 983                         printf("if-bound");
 984                         opts = 0;
 985                 }
 986                 if (r->rule_flag & PFRULE_STATESLOPPY) {
 987                         if (!opts)
 988                                 printf(", ");
 989                         printf("sloppy");
 990                         opts = 0;
 991                 }
 992                 for (i = 0; i < PFTM_MAX; ++i)
 993                         if (r->timeout[i]) {
 994                                 int j;
 995
 996                                 if (!opts)
 997                                         printf(", ");
 998                                 opts = 0;
 999                                 for (j = 0; pf_timeouts[j].name != NULL;
1000                                     ++j)
1001                                         if (pf_timeouts[j].timeout == i)
1002                                                 break;
1003                                 printf("%s %u", pf_timeouts[j].name == NULL ?
1004                                     "inv.timeout" : pf_timeouts[j].name,
1005                                     r->timeout[i]);
1006                         }
1007                 printf(")");
1008         }
1009         if (r->rule_flag & PFRULE_FRAGMENT)
1010                 printf(" fragment");
1011         if (r->rule_flag & PFRULE_NODF)
1012                 printf(" no-df");
1013         if (r->rule_flag & PFRULE_RANDOMID)
1014                 printf(" random-id");
1015         if (r->min_ttl)
1016                 printf(" min-ttl %d", r->min_ttl);
1017         if (r->max_mss)
1018                 printf(" max-mss %d", r->max_mss);
1019         if (r->rule_flag & PFRULE_SET_TOS)
1020                 printf(" set-tos 0x%2.2x", r->set_tos);
1021         if (r->allow_opts)
1022                 printf(" allow-opts");
1023         if (r->action == PF_SCRUB) {
1024                 if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
1025                         printf(" reassemble tcp");
1026
1027                 printf(" fragment reassemble");
1028         }
1029         i = 0;
1030         while (r->label[i][0])
1031                 printf(" label \"%s\"", r->label[i++]);
1032         if (r->qname[0] && r->pqname[0])
1033                 printf(" queue(%s, %s)", r->qname, r->pqname);
1034         else if (r->qname[0])
1035                 printf(" queue %s", r->qname);
1036         if (r->tagname[0])
1037                 printf(" tag %s", r->tagname);
1038         if (r->match_tagname[0]) {
1039                 if (r->match_tag_not)
1040                         printf(" !");
1041                 printf(" tagged %s", r->match_tagname);
1042         }
1043         if (r->rtableid != -1)
1044                 printf(" rtable %u", r->rtableid);
1045         if (r->divert.port) {
1046 #ifdef __FreeBSD__
1047                 printf(" divert-to %u", ntohs(r->divert.port));
1048 #else
1049                 if (PF_AZERO(&r->divert.addr, r->af)) {
1050                         printf(" divert-reply");
1051                 } else {
1052                         /* XXX cut&paste from print_addr */
1053                         char buf[48];
1054
1055                         printf(" divert-to ");
1056                         if (inet_ntop(r->af, &r->divert.addr, buf,
1057                             sizeof(buf)) == NULL)
1058                                 printf("?");
1059                         else
1060                                 printf("%s", buf);
1061                         printf(" port %u", ntohs(r->divert.port));
1062                 }
1063 #endif
1064         }
1065         if (!anchor_call[0] && (r->action == PF_NAT ||
1066             r->action == PF_BINAT || r->action == PF_RDR)) {
1067                 printf(" -> ");
1068                 print_pool(&r->rpool, r->rpool.proxy_port[0],
1069                     r->rpool.proxy_port[1], r->af, r->action);
1070         }
1071 }
1072
1073 void
1074 print_tabledef(const char *name, int flags, int addrs,
1075     struct node_tinithead *nodes)
1076 {
1077         struct node_tinit       *ti, *nti;
1078         struct node_host        *h;
1079
1080         printf("table <%s>", name);
1081         if (flags & PFR_TFLAG_CONST)
1082                 printf(" const");
1083         if (flags & PFR_TFLAG_PERSIST)
1084                 printf(" persist");
1085         if (flags & PFR_TFLAG_COUNTERS)
1086                 printf(" counters");
1087         SIMPLEQ_FOREACH(ti, nodes, entries) {
1088                 if (ti->file) {
1089                         printf(" file \"%s\"", ti->file);
1090                         continue;
1091                 }
1092                 printf(" {");
1093                 for (;;) {
1094                         for (h = ti->host; h != NULL; h = h->next) {
1095                                 printf(h->not ? " !" : " ");
1096                                 print_addr(&h->addr, h->af, 0);
1097                         }
1098                         nti = SIMPLEQ_NEXT(ti, entries);
1099                         if (nti != NULL && nti->file == NULL)
1100                                 ti = nti;       /* merge lists */
1101                         else
1102                                 break;
1103                 }
1104                 printf(" }");
1105         }
1106         if (addrs && SIMPLEQ_EMPTY(nodes))
1107                 printf(" { }");
1108         printf("\n");
1109 }
1110
1111 int
1112 parse_flags(char *s)
1113 {
1114         char            *p, *q;
1115         u_int8_t         f = 0;
1116
1117         for (p = s; *p; p++) {
1118                 if ((q = strchr(tcpflags, *p)) == NULL)
1119                         return -1;
1120                 else
1121                         f |= 1 << (q - tcpflags);
1122         }
1123         return (f ? f : PF_TH_ALL);
1124 }
1125
1126 void
1127 set_ipmask(struct node_host *h, u_int8_t b)
1128 {
1129         struct pf_addr  *m, *n;
1130         int              i, j = 0;
1131
1132         m = &h->addr.v.a.mask;
1133         memset(m, 0, sizeof(*m));
1134
1135         while (b >= 32) {
1136                 m->addr32[j++] = 0xffffffff;
1137                 b -= 32;
1138         }
1139         for (i = 31; i > 31-b; --i)
1140                 m->addr32[j] |= (1 << i);
1141         if (b)
1142                 m->addr32[j] = htonl(m->addr32[j]);
1143
1144         /* Mask off bits of the address that will never be used. */
1145         n = &h->addr.v.a.addr;
1146         if (h->addr.type == PF_ADDR_ADDRMASK)
1147                 for (i = 0; i < 4; i++)
1148                         n->addr32[i] = n->addr32[i] & m->addr32[i];
1149 }
1150
1151 int
1152 check_netmask(struct node_host *h, sa_family_t af)
1153 {
1154         struct node_host        *n = NULL;
1155         struct pf_addr  *m;
1156
1157         for (n = h; n != NULL; n = n->next) {
1158                 if (h->addr.type == PF_ADDR_TABLE)
1159                         continue;
1160                 m = &h->addr.v.a.mask;
1161                 /* fix up netmask for dynaddr */
1162                 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL &&
1163                     unmask(m, AF_INET6) > 32)
1164                         set_ipmask(n, 32);
1165                 /* netmasks > 32 bit are invalid on v4 */
1166                 if (af == AF_INET &&
1167                     (m->addr32[1] || m->addr32[2] || m->addr32[3])) {
1168                         fprintf(stderr, "netmask %u invalid for IPv4 address\n",
1169                             unmask(m, AF_INET6));
1170                         return (1);
1171                 }
1172         }
1173         return (0);
1174 }
1175
1176 /* interface lookup routines */
1177
1178 static struct node_host *iftab;
1179
1180 /*
1181  * Retrieve the list of groups this interface is a member of and make sure
1182  * each group is in the group map.
1183  */
1184 static void
1185 ifa_add_groups_to_map(char *ifa_name)
1186 {
1187         int                      s, len;
1188         struct ifgroupreq        ifgr;
1189         struct ifg_req          *ifg;
1190
1191         s = get_query_socket();
1192
1193         /* Get size of group list for this interface */
1194         memset(&ifgr, 0, sizeof(ifgr));
1195         strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ);
1196         if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1197                 err(1, "SIOCGIFGROUP");
1198
1199         /* Retrieve group list for this interface */
1200         len = ifgr.ifgr_len;
1201         ifgr.ifgr_groups =
1202             (struct ifg_req *)calloc(len / sizeof(struct ifg_req),
1203                 sizeof(struct ifg_req));
1204         if (ifgr.ifgr_groups == NULL)
1205                 err(1, "calloc");
1206         if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1207                 err(1, "SIOCGIFGROUP");
1208
1209         ifg = ifgr.ifgr_groups;
1210         for (; ifg && len >= sizeof(struct ifg_req); ifg++) {
1211                 len -= sizeof(struct ifg_req);
1212                 if (strcmp(ifg->ifgrq_group, "all")) {
1213                         ENTRY                    item;
1214                         ENTRY                   *ret_item;
1215                         int                     *answer;
1216
1217                         item.key = ifg->ifgrq_group;
1218                         if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) {
1219                                 struct ifgroupreq        ifgr2;
1220
1221                                 /* Don't know the answer yet */
1222                                 if ((answer = malloc(sizeof(int))) == NULL)
1223                                         err(1, "malloc");
1224
1225                                 bzero(&ifgr2, sizeof(ifgr2));
1226                                 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group,
1227                                     sizeof(ifgr2.ifgr_name));
1228                                 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0)
1229                                         *answer = ifgr2.ifgr_len;
1230                                 else
1231                                         *answer = 0;
1232
1233                                 item.key = strdup(ifg->ifgrq_group);
1234                                 item.data = answer;
1235                                 if (hsearch_r(item, ENTER, &ret_item,
1236                                         &isgroup_map) == 0)
1237                                         err(1, "interface group query response"
1238                                             " map insert");
1239                         }
1240                 }
1241         }
1242         free(ifgr.ifgr_groups);
1243 }
1244
1245 void
1246 ifa_load(void)
1247 {
1248         struct ifaddrs          *ifap, *ifa;
1249         struct node_host        *n = NULL, *h = NULL;
1250
1251         if (getifaddrs(&ifap) < 0)
1252                 err(1, "getifaddrs");
1253
1254         for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1255                 if (!(ifa->ifa_addr->sa_family == AF_INET ||
1256                     ifa->ifa_addr->sa_family == AF_INET6 ||
1257                     ifa->ifa_addr->sa_family == AF_LINK))
1258                                 continue;
1259                 n = calloc(1, sizeof(struct node_host));
1260                 if (n == NULL)
1261                         err(1, "address: calloc");
1262                 n->af = ifa->ifa_addr->sa_family;
1263                 n->ifa_flags = ifa->ifa_flags;
1264 #ifdef __KAME__
1265                 if (n->af == AF_INET6 &&
1266                     IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
1267                     ifa->ifa_addr)->sin6_addr) &&
1268                     ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
1269                     0) {
1270                         struct sockaddr_in6     *sin6;
1271
1272                         sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1273                         sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
1274                             sin6->sin6_addr.s6_addr[3];
1275                         sin6->sin6_addr.s6_addr[2] = 0;
1276                         sin6->sin6_addr.s6_addr[3] = 0;
1277                 }
1278 #endif
1279                 n->ifindex = 0;
1280                 if (n->af == AF_INET) {
1281                         memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *)
1282                             ifa->ifa_addr)->sin_addr.s_addr,
1283                             sizeof(struct in_addr));
1284                         memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *)
1285                             ifa->ifa_netmask)->sin_addr.s_addr,
1286                             sizeof(struct in_addr));
1287                         if (ifa->ifa_broadaddr != NULL)
1288                                 memcpy(&n->bcast, &((struct sockaddr_in *)
1289                                     ifa->ifa_broadaddr)->sin_addr.s_addr,
1290                                     sizeof(struct in_addr));
1291                         if (ifa->ifa_dstaddr != NULL)
1292                                 memcpy(&n->peer, &((struct sockaddr_in *)
1293                                     ifa->ifa_dstaddr)->sin_addr.s_addr,
1294                                     sizeof(struct in_addr));
1295                 } else if (n->af == AF_INET6) {
1296                         memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *)
1297                             ifa->ifa_addr)->sin6_addr.s6_addr,
1298                             sizeof(struct in6_addr));
1299                         memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *)
1300                             ifa->ifa_netmask)->sin6_addr.s6_addr,
1301                             sizeof(struct in6_addr));
1302                         if (ifa->ifa_broadaddr != NULL)
1303                                 memcpy(&n->bcast, &((struct sockaddr_in6 *)
1304                                     ifa->ifa_broadaddr)->sin6_addr.s6_addr,
1305                                     sizeof(struct in6_addr));
1306                         if (ifa->ifa_dstaddr != NULL)
1307                                  memcpy(&n->peer, &((struct sockaddr_in6 *)
1308                                     ifa->ifa_dstaddr)->sin6_addr.s6_addr,
1309                                     sizeof(struct in6_addr));
1310                         n->ifindex = ((struct sockaddr_in6 *)
1311                             ifa->ifa_addr)->sin6_scope_id;
1312                 } else if (n->af == AF_LINK) {
1313                         ifa_add_groups_to_map(ifa->ifa_name);
1314                 }
1315                 if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
1316                         err(1, "ifa_load: strdup");
1317                 n->next = NULL;
1318                 n->tail = n;
1319                 if (h == NULL)
1320                         h = n;
1321                 else {
1322                         h->tail->next = n;
1323                         h->tail = n;
1324                 }
1325         }
1326
1327         iftab = h;
1328         freeifaddrs(ifap);
1329 }
1330
1331 static int
1332 get_socket_domain(void)
1333 {
1334         int sdom;
1335
1336         sdom = AF_UNSPEC;
1337 #ifdef WITH_INET6
1338         if (sdom == AF_UNSPEC && feature_present("inet6"))
1339                 sdom = AF_INET6;
1340 #endif
1341 #ifdef WITH_INET
1342         if (sdom == AF_UNSPEC && feature_present("inet"))
1343                 sdom = AF_INET;
1344 #endif
1345         if (sdom == AF_UNSPEC)
1346                 sdom = AF_LINK;
1347
1348         return (sdom);
1349 }
1350
1351 int
1352 get_query_socket(void)
1353 {
1354         static int s = -1;
1355
1356         if (s == -1) {
1357                 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1)
1358                         err(1, "socket");
1359         }
1360
1361         return (s);
1362 }
1363
1364 /*
1365  * Returns the response len if the name is a group, otherwise returns 0.
1366  */
1367 static int
1368 is_a_group(char *name)
1369 {
1370         ENTRY                    item;
1371         ENTRY                   *ret_item;
1372
1373         item.key = name;
1374         if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0)
1375                 return (0);
1376
1377         return (*(int *)ret_item->data);
1378 }
1379
1380 struct node_host *
1381 ifa_exists(char *ifa_name)
1382 {
1383         struct node_host        *n;
1384
1385         if (iftab == NULL)
1386                 ifa_load();
1387
1388         /* check whether this is a group */
1389         if (is_a_group(ifa_name)) {
1390                 /* fake a node_host */
1391                 if ((n = calloc(1, sizeof(*n))) == NULL)
1392                         err(1, "calloc");
1393                 if ((n->ifname = strdup(ifa_name)) == NULL)
1394                         err(1, "strdup");
1395                 return (n);
1396         }
1397
1398         for (n = iftab; n; n = n->next) {
1399                 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
1400                         return (n);
1401         }
1402
1403         return (NULL);
1404 }
1405
1406 struct node_host *
1407 ifa_grouplookup(char *ifa_name, int flags)
1408 {
1409         struct ifg_req          *ifg;
1410         struct ifgroupreq        ifgr;
1411         int                      s, len;
1412         struct node_host        *n, *h = NULL;
1413
1414         s = get_query_socket();
1415         len = is_a_group(ifa_name);
1416         if (len == 0)
1417                 return (NULL);
1418         bzero(&ifgr, sizeof(ifgr));
1419         strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
1420         ifgr.ifgr_len = len;
1421         if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
1422                 err(1, "calloc");
1423         if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
1424                 err(1, "SIOCGIFGMEMB");
1425
1426         for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req);
1427             ifg++) {
1428                 len -= sizeof(struct ifg_req);
1429                 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL)
1430                         continue;
1431                 if (h == NULL)
1432                         h = n;
1433                 else {
1434                         h->tail->next = n;
1435                         h->tail = n->tail;
1436                 }
1437         }
1438         free(ifgr.ifgr_groups);
1439
1440         return (h);
1441 }
1442
1443 struct node_host *
1444 ifa_lookup(char *ifa_name, int flags)
1445 {
1446         struct node_host        *p = NULL, *h = NULL, *n = NULL;
1447         int                      got4 = 0, got6 = 0;
1448         const char               *last_if = NULL;
1449
1450         /* first load iftab and isgroup_map */
1451         if (iftab == NULL)
1452                 ifa_load();
1453
1454         if ((h = ifa_grouplookup(ifa_name, flags)) != NULL)
1455                 return (h);
1456
1457         if (!strncmp(ifa_name, "self", IFNAMSIZ))
1458                 ifa_name = NULL;
1459
1460         for (p = iftab; p; p = p->next) {
1461                 if (ifa_skip_if(ifa_name, p))
1462                         continue;
1463                 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
1464                         continue;
1465                 if ((flags & PFI_AFLAG_BROADCAST) &&
1466                     !(p->ifa_flags & IFF_BROADCAST))
1467                         continue;
1468                 if ((flags & PFI_AFLAG_PEER) &&
1469                     !(p->ifa_flags & IFF_POINTOPOINT))
1470                         continue;
1471                 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
1472                         continue;
1473                 if (last_if == NULL || strcmp(last_if, p->ifname))
1474                         got4 = got6 = 0;
1475                 last_if = p->ifname;
1476                 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
1477                         continue;
1478                 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 &&
1479                     IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6))
1480                         continue;
1481                 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
1482                         continue;
1483                 if (p->af == AF_INET)
1484                         got4 = 1;
1485                 else
1486                         got6 = 1;
1487                 n = calloc(1, sizeof(struct node_host));
1488                 if (n == NULL)
1489                         err(1, "address: calloc");
1490                 n->af = p->af;
1491                 if (flags & PFI_AFLAG_BROADCAST)
1492                         memcpy(&n->addr.v.a.addr, &p->bcast,
1493                             sizeof(struct pf_addr));
1494                 else if (flags & PFI_AFLAG_PEER)
1495                         memcpy(&n->addr.v.a.addr, &p->peer,
1496                             sizeof(struct pf_addr));
1497                 else
1498                         memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
1499                             sizeof(struct pf_addr));
1500                 if (flags & PFI_AFLAG_NETWORK)
1501                         set_ipmask(n, unmask(&p->addr.v.a.mask, n->af));
1502                 else {
1503                         if (n->af == AF_INET) {
1504                                 if (p->ifa_flags & IFF_LOOPBACK &&
1505                                     p->ifa_flags & IFF_LINK1)
1506                                         memcpy(&n->addr.v.a.mask,
1507                                             &p->addr.v.a.mask,
1508                                             sizeof(struct pf_addr));
1509                                 else
1510                                         set_ipmask(n, 32);
1511                         } else
1512                                 set_ipmask(n, 128);
1513                 }
1514                 n->ifindex = p->ifindex;
1515                 n->ifname = strdup(p->ifname);
1516
1517                 n->next = NULL;
1518                 n->tail = n;
1519                 if (h == NULL)
1520                         h = n;
1521                 else {
1522                         h->tail->next = n;
1523                         h->tail = n;
1524                 }
1525         }
1526         return (h);
1527 }
1528
1529 int
1530 ifa_skip_if(const char *filter, struct node_host *p)
1531 {
1532         int     n;
1533
1534         if (p->af != AF_INET && p->af != AF_INET6)
1535                 return (1);
1536         if (filter == NULL || !*filter)
1537                 return (0);
1538         if (!strcmp(p->ifname, filter))
1539                 return (0);     /* exact match */
1540         n = strlen(filter);
1541         if (n < 1 || n >= IFNAMSIZ)
1542                 return (1);     /* sanity check */
1543         if (filter[n-1] >= '0' && filter[n-1] <= '9')
1544                 return (1);     /* only do exact match in that case */
1545         if (strncmp(p->ifname, filter, n))
1546                 return (1);     /* prefix doesn't match */
1547         return (p->ifname[n] < '0' || p->ifname[n] > '9');
1548 }
1549
1550
1551 struct node_host *
1552 host(const char *s)
1553 {
1554         struct node_host        *h = NULL;
1555         int                      mask, v4mask, v6mask, cont = 1;
1556         char                    *p, *q, *ps;
1557
1558         if ((p = strrchr(s, '/')) != NULL) {
1559                 mask = strtol(p+1, &q, 0);
1560                 if (!q || *q || mask > 128 || q == (p+1)) {
1561                         fprintf(stderr, "invalid netmask '%s'\n", p);
1562                         return (NULL);
1563                 }
1564                 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
1565                         err(1, "host: malloc");
1566                 strlcpy(ps, s, strlen(s) - strlen(p) + 1);
1567                 v4mask = v6mask = mask;
1568         } else {
1569                 if ((ps = strdup(s)) == NULL)
1570                         err(1, "host: strdup");
1571                 v4mask = 32;
1572                 v6mask = 128;
1573                 mask = -1;
1574         }
1575
1576         /* IPv4 address? */
1577         if (cont && (h = host_v4(s, mask)) != NULL)
1578                 cont = 0;
1579
1580         /* IPv6 address? */
1581         if (cont && (h = host_v6(ps, v6mask)) != NULL)
1582                 cont = 0;
1583
1584         /* interface with this name exists? */
1585         /* expensive with thousands of interfaces - prioritze IPv4/6 check */
1586         if (cont && (h = host_if(ps, mask)) != NULL)
1587                 cont = 0;
1588
1589         /* dns lookup */
1590         if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL)
1591                 cont = 0;
1592         free(ps);
1593
1594         if (h == NULL || cont == 1) {
1595                 fprintf(stderr, "no IP address found for %s\n", s);
1596                 return (NULL);
1597         }
1598         return (h);
1599 }
1600
1601 struct node_host *
1602 host_if(const char *s, int mask)
1603 {
1604         struct node_host        *n, *h = NULL;
1605         char                    *p, *ps;
1606         int                      flags = 0;
1607
1608         if ((ps = strdup(s)) == NULL)
1609                 err(1, "host_if: strdup");
1610         while ((p = strrchr(ps, ':')) != NULL) {
1611                 if (!strcmp(p+1, "network"))
1612                         flags |= PFI_AFLAG_NETWORK;
1613                 else if (!strcmp(p+1, "broadcast"))
1614                         flags |= PFI_AFLAG_BROADCAST;
1615                 else if (!strcmp(p+1, "peer"))
1616                         flags |= PFI_AFLAG_PEER;
1617                 else if (!strcmp(p+1, "0"))
1618                         flags |= PFI_AFLAG_NOALIAS;
1619                 else {
1620                         free(ps);
1621                         return (NULL);
1622                 }
1623                 *p = '\0';
1624         }
1625         if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
1626                 fprintf(stderr, "illegal combination of interface modifiers\n");
1627                 free(ps);
1628                 return (NULL);
1629         }
1630         if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
1631                 fprintf(stderr, "network or broadcast lookup, but "
1632                     "extra netmask given\n");
1633                 free(ps);
1634                 return (NULL);
1635         }
1636         if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) {
1637                 /* interface with this name exists */
1638                 h = ifa_lookup(ps, flags);
1639                 for (n = h; n != NULL && mask > -1; n = n->next)
1640                         set_ipmask(n, mask);
1641         }
1642
1643         free(ps);
1644         return (h);
1645 }
1646
1647 struct node_host *
1648 host_v4(const char *s, int mask)
1649 {
1650         struct node_host        *h = NULL;
1651         struct in_addr           ina;
1652         int                      bits = 32;
1653
1654         memset(&ina, 0, sizeof(struct in_addr));
1655         if (strrchr(s, '/') != NULL) {
1656                 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1)
1657                         return (NULL);
1658         } else {
1659                 if (inet_pton(AF_INET, s, &ina) != 1)
1660                         return (NULL);
1661         }
1662
1663         h = calloc(1, sizeof(struct node_host));
1664         if (h == NULL)
1665                 err(1, "address: calloc");
1666         h->ifname = NULL;
1667         h->af = AF_INET;
1668         h->addr.v.a.addr.addr32[0] = ina.s_addr;
1669         set_ipmask(h, bits);
1670         h->next = NULL;
1671         h->tail = h;
1672
1673         return (h);
1674 }
1675
1676 struct node_host *
1677 host_v6(const char *s, int mask)
1678 {
1679         struct addrinfo          hints, *res;
1680         struct node_host        *h = NULL;
1681
1682         memset(&hints, 0, sizeof(hints));
1683         hints.ai_family = AF_INET6;
1684         hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1685         hints.ai_flags = AI_NUMERICHOST;
1686         if (getaddrinfo(s, "0", &hints, &res) == 0) {
1687                 h = calloc(1, sizeof(struct node_host));
1688                 if (h == NULL)
1689                         err(1, "address: calloc");
1690                 h->ifname = NULL;
1691                 h->af = AF_INET6;
1692                 memcpy(&h->addr.v.a.addr,
1693                     &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
1694                     sizeof(h->addr.v.a.addr));
1695                 h->ifindex =
1696                     ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1697                 set_ipmask(h, mask);
1698                 freeaddrinfo(res);
1699                 h->next = NULL;
1700                 h->tail = h;
1701         }
1702
1703         return (h);
1704 }
1705
1706 struct node_host *
1707 host_dns(const char *s, int v4mask, int v6mask)
1708 {
1709         struct addrinfo          hints, *res0, *res;
1710         struct node_host        *n, *h = NULL;
1711         int                      error, noalias = 0;
1712         int                      got4 = 0, got6 = 0;
1713         char                    *p, *ps;
1714
1715         if ((ps = strdup(s)) == NULL)
1716                 err(1, "host_dns: strdup");
1717         if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
1718                 noalias = 1;
1719                 *p = '\0';
1720         }
1721         memset(&hints, 0, sizeof(hints));
1722         hints.ai_family = PF_UNSPEC;
1723         hints.ai_socktype = SOCK_STREAM; /* DUMMY */
1724         error = getaddrinfo(ps, NULL, &hints, &res0);
1725         if (error) {
1726                 free(ps);
1727                 return (h);
1728         }
1729
1730         for (res = res0; res; res = res->ai_next) {
1731                 if (res->ai_family != AF_INET &&
1732                     res->ai_family != AF_INET6)
1733                         continue;
1734                 if (noalias) {
1735                         if (res->ai_family == AF_INET) {
1736                                 if (got4)
1737                                         continue;
1738                                 got4 = 1;
1739                         } else {
1740                                 if (got6)
1741                                         continue;
1742                                 got6 = 1;
1743                         }
1744                 }
1745                 n = calloc(1, sizeof(struct node_host));
1746                 if (n == NULL)
1747                         err(1, "host_dns: calloc");
1748                 n->ifname = NULL;
1749                 n->af = res->ai_family;
1750                 if (res->ai_family == AF_INET) {
1751                         memcpy(&n->addr.v.a.addr,
1752                             &((struct sockaddr_in *)
1753                             res->ai_addr)->sin_addr.s_addr,
1754                             sizeof(struct in_addr));
1755                         set_ipmask(n, v4mask);
1756                 } else {
1757                         memcpy(&n->addr.v.a.addr,
1758                             &((struct sockaddr_in6 *)
1759                             res->ai_addr)->sin6_addr.s6_addr,
1760                             sizeof(struct in6_addr));
1761                         n->ifindex =
1762                             ((struct sockaddr_in6 *)
1763                             res->ai_addr)->sin6_scope_id;
1764                         set_ipmask(n, v6mask);
1765                 }
1766                 n->next = NULL;
1767                 n->tail = n;
1768                 if (h == NULL)
1769                         h = n;
1770                 else {
1771                         h->tail->next = n;
1772                         h->tail = n;
1773                 }
1774         }
1775         freeaddrinfo(res0);
1776         free(ps);
1777
1778         return (h);
1779 }
1780
1781 /*
1782  * convert a hostname to a list of addresses and put them in the given buffer.
1783  * test:
1784  *      if set to 1, only simple addresses are accepted (no netblock, no "!").
1785  */
1786 int
1787 append_addr(struct pfr_buffer *b, char *s, int test)
1788 {
1789         char                     *r;
1790         struct node_host        *h, *n;
1791         int                      rv, not = 0;
1792
1793         for (r = s; *r == '!'; r++)
1794                 not = !not;
1795         if ((n = host(r)) == NULL) {
1796                 errno = 0;
1797                 return (-1);
1798         }
1799         rv = append_addr_host(b, n, test, not);
1800         do {
1801                 h = n;
1802                 n = n->next;
1803                 free(h);
1804         } while (n != NULL);
1805         return (rv);
1806 }
1807
1808 /*
1809  * same as previous function, but with a pre-parsed input and the ability
1810  * to "negate" the result. Does not free the node_host list.
1811  * not:
1812  *      setting it to 1 is equivalent to adding "!" in front of parameter s.
1813  */
1814 int
1815 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
1816 {
1817         int                      bits;
1818         struct pfr_addr          addr;
1819
1820         do {
1821                 bzero(&addr, sizeof(addr));
1822                 addr.pfra_not = n->not ^ not;
1823                 addr.pfra_af = n->af;
1824                 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af);
1825                 switch (n->af) {
1826                 case AF_INET:
1827                         addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
1828                         bits = 32;
1829                         break;
1830                 case AF_INET6:
1831                         memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
1832                             sizeof(struct in6_addr));
1833                         bits = 128;
1834                         break;
1835                 default:
1836                         errno = EINVAL;
1837                         return (-1);
1838                 }
1839                 if ((test && (not || addr.pfra_net != bits)) ||
1840                     addr.pfra_net > bits) {
1841                         errno = EINVAL;
1842                         return (-1);
1843                 }
1844                 if (pfr_buf_add(b, &addr))
1845                         return (-1);
1846         } while ((n = n->next) != NULL);
1847
1848         return (0);
1849 }
1850
1851 int
1852 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor)
1853 {
1854         struct pfioc_trans_e trans;
1855
1856         bzero(&trans, sizeof(trans));
1857         trans.rs_num = rs_num;
1858         if (strlcpy(trans.anchor, anchor,
1859             sizeof(trans.anchor)) >= sizeof(trans.anchor))
1860                 errx(1, "pfctl_add_trans: strlcpy");
1861
1862         return pfr_buf_add(buf, &trans);
1863 }
1864
1865 u_int32_t
1866 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor)
1867 {
1868         struct pfioc_trans_e *p;
1869
1870         PFRB_FOREACH(p, buf)
1871                 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor))
1872                         return (p->ticket);
1873         errx(1, "pfctl_get_ticket: assertion failed");
1874 }
1875
1876 int
1877 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
1878 {
1879         struct pfioc_trans trans;
1880
1881         bzero(&trans, sizeof(trans));
1882         trans.size = buf->pfrb_size - from;
1883         trans.esize = sizeof(struct pfioc_trans_e);
1884         trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
1885         return ioctl(dev, cmd, &trans);
1886 }