sbin/pfctl/pfctl_parser.c

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