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 < (sizeof (icmp_type) / sizeof(icmp_type[0]));
 217                     i++) {
 218                         if (type == icmp_type[i].type)
 219                                 return (&icmp_type[i]);
 220                 }
 221         } else {
 222                 for (i=0; i < (sizeof (icmp6_type) /
 223                     sizeof(icmp6_type[0])); i++) {
 224                         if (type == icmp6_type[i].type)
 225                                  return (&icmp6_type[i]);
 226                 }
 227         }
 228         return (NULL);
 229 }
 230
 231 const struct icmptypeent *
 232 geticmptypebyname(char *w, sa_family_t af)
 233 {
 234         unsigned int    i;
 235
 236         if (af != AF_INET6) {
 237                 for (i=0; i < (sizeof (icmp_type) / sizeof(icmp_type[0]));
 238                     i++) {
 239                         if (!strcmp(w, icmp_type[i].name))
 240                                 return (&icmp_type[i]);
 241                 }
 242         } else {
 243                 for (i=0; i < (sizeof (icmp6_type) /
 244                     sizeof(icmp6_type[0])); i++) {
 245                         if (!strcmp(w, icmp6_type[i].name))
 246                                 return (&icmp6_type[i]);
 247                 }
 248         }
 249         return (NULL);
 250 }
 251
 252 const struct icmpcodeent *
 253 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af)
 254 {
 255         unsigned int    i;
 256
 257         if (af != AF_INET6) {
 258                 for (i=0; i < (sizeof (icmp_code) / sizeof(icmp_code[0]));
 259                     i++) {
 260                         if (type == icmp_code[i].type &&
 261                             code == icmp_code[i].code)
 262                                 return (&icmp_code[i]);
 263                 }
 264         } else {
 265                 for (i=0; i < (sizeof (icmp6_code) /
 266                     sizeof(icmp6_code[0])); i++) {
 267                         if (type == icmp6_code[i].type &&
 268                             code == icmp6_code[i].code)
 269                                 return (&icmp6_code[i]);
 270                 }
 271         }
 272         return (NULL);
 273 }
 274
 275 const struct icmpcodeent *
 276 geticmpcodebyname(u_long type, char *w, sa_family_t af)
 277 {
 278         unsigned int    i;
 279
 280         if (af != AF_INET6) {
 281                 for (i=0; i < (sizeof (icmp_code) / sizeof(icmp_code[0]));
 282                     i++) {
 283                         if (type == icmp_code[i].type &&
 284                             !strcmp(w, icmp_code[i].name))
 285                                 return (&icmp_code[i]);
 286                 }
 287         } else {
 288                 for (i=0; i < (sizeof (icmp6_code) /
 289                     sizeof(icmp6_code[0])); i++) {
 290                         if (type == icmp6_code[i].type &&
 291                             !strcmp(w, icmp6_code[i].name))
 292                                 return (&icmp6_code[i]);
 293                 }
 294         }
 295         return (NULL);
 296 }
 297
 298 void
 299 print_op(u_int8_t op, const char *a1, const char *a2)
 300 {
 301         if (op == PF_OP_IRG)
 302                 printf(" %s >< %s", a1, a2);
 303         else if (op == PF_OP_XRG)
 304                 printf(" %s <> %s", a1, a2);
 305         else if (op == PF_OP_EQ)
 306                 printf(" = %s", a1);
 307         else if (op == PF_OP_NE)
 308                 printf(" != %s", a1);
 309         else if (op == PF_OP_LT)
 310                 printf(" < %s", a1);
 311         else if (op == PF_OP_LE)
 312                 printf(" <= %s", a1);
 313         else if (op == PF_OP_GT)
 314                 printf(" > %s", a1);
 315         else if (op == PF_OP_GE)
 316                 printf(" >= %s", a1);
 317         else if (op == PF_OP_RRG)
 318                 printf(" %s:%s", a1, a2);
 319 }
 320
 321 void
 322 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric)
 323 {
 324         char             a1[6], a2[6];
 325         struct servent  *s;
 326
 327         if (!numeric)
 328                 s = getservbyport(p1, proto);
 329         else
 330                 s = NULL;
 331         p1 = ntohs(p1);
 332         p2 = ntohs(p2);
 333         snprintf(a1, sizeof(a1), "%u", p1);
 334         snprintf(a2, sizeof(a2), "%u", p2);
 335         printf(" port");
 336         if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE))
 337                 print_op(op, s->s_name, a2);
 338         else
 339                 print_op(op, a1, a2);
 340 }
 341
 342 void
 343 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax)
 344 {
 345         char    a1[11], a2[11];
 346
 347         snprintf(a1, sizeof(a1), "%u", u1);
 348         snprintf(a2, sizeof(a2), "%u", u2);
 349         printf(" %s", t);
 350         if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE))
 351                 print_op(op, "unknown", a2);
 352         else
 353                 print_op(op, a1, a2);
 354 }
 355
 356 void
 357 print_flags(u_int8_t f)
 358 {
 359         int     i;
 360
 361         for (i = 0; tcpflags[i]; ++i)
 362                 if (f & (1 << i))
 363                         printf("%c", tcpflags[i]);
 364 }
 365
 366 void
 367 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst,
 368     sa_family_t af, u_int8_t proto, int verbose, int numeric)
 369 {
 370         char buf[PF_OSFP_LEN*3];
 371         if (src->addr.type == PF_ADDR_ADDRMASK &&
 372             dst->addr.type == PF_ADDR_ADDRMASK &&
 373             PF_AZERO(&src->addr.v.a.addr, AF_INET6) &&
 374             PF_AZERO(&src->addr.v.a.mask, AF_INET6) &&
 375             PF_AZERO(&dst->addr.v.a.addr, AF_INET6) &&
 376             PF_AZERO(&dst->addr.v.a.mask, AF_INET6) &&
 377             !src->neg && !dst->neg &&
 378             !src->port_op && !dst->port_op &&
 379             osfp == PF_OSFP_ANY)
 380                 printf(" all");
 381         else {
 382                 printf(" from ");
 383                 if (src->neg)
 384                         printf("! ");
 385                 print_addr(&src->addr, af, verbose);
 386                 if (src->port_op)
 387                         print_port(src->port_op, src->port[0],
 388                             src->port[1],
 389                             proto == IPPROTO_TCP ? "tcp" : "udp",
 390                             numeric);
 391                 if (osfp != PF_OSFP_ANY)
 392                         printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf,
 393                             sizeof(buf)));
 394
 395                 printf(" to ");
 396                 if (dst->neg)
 397                         printf("! ");
 398                 print_addr(&dst->addr, af, verbose);
 399                 if (dst->port_op)
 400                         print_port(dst->port_op, dst->port[0],
 401                             dst->port[1],
 402                             proto == IPPROTO_TCP ? "tcp" : "udp",
 403                             numeric);
 404         }
 405 }
 406
 407 void
 408 print_pool(struct pf_pool *pool, u_int16_t p1, u_int16_t p2,
 409     sa_family_t af, int id)
 410 {
 411         struct pf_pooladdr      *pooladdr;
 412
 413         if ((TAILQ_FIRST(&pool->list) != NULL) &&
 414             TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
 415                 printf("{ ");
 416         TAILQ_FOREACH(pooladdr, &pool->list, entries){
 417                 switch (id) {
 418                 case PF_NAT:
 419                 case PF_RDR:
 420                 case PF_BINAT:
 421                         print_addr(&pooladdr->addr, af, 0);
 422                         break;
 423                 case PF_PASS:
 424                         if (PF_AZERO(&pooladdr->addr.v.a.addr, af))
 425                                 printf("%s", pooladdr->ifname);
 426                         else {
 427                                 printf("(%s ", pooladdr->ifname);
 428                                 print_addr(&pooladdr->addr, af, 0);
 429                                 printf(")");
 430                         }
 431                         break;
 432                 default:
 433                         break;
 434                 }
 435                 if (TAILQ_NEXT(pooladdr, entries) != NULL)
 436                         printf(", ");
 437                 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
 438                         printf(" }");
 439         }
 440         switch (id) {
 441         case PF_NAT:
 442                 if ((p1 != PF_NAT_PROXY_PORT_LOW ||
 443                     p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) {
 444                         if (p1 == p2)
 445                                 printf(" port %u", p1);
 446                         else
 447                                 printf(" port %u:%u", p1, p2);
 448                 }
 449                 break;
 450         case PF_RDR:
 451                 if (p1) {
 452                         printf(" port %u", p1);
 453                         if (p2 && (p2 != p1))
 454                                 printf(":%u", p2);
 455                 }
 456                 break;
 457         default:
 458                 break;
 459         }
 460         switch (pool->opts & PF_POOL_TYPEMASK) {
 461         case PF_POOL_NONE:
 462                 break;
 463         case PF_POOL_BITMASK:
 464                 printf(" bitmask");
 465                 break;
 466         case PF_POOL_RANDOM:
 467                 printf(" random");
 468                 break;
 469         case PF_POOL_SRCHASH:
 470                 printf(" source-hash 0x%08x%08x%08x%08x",
 471                     pool->key.key32[0], pool->key.key32[1],
 472                     pool->key.key32[2], pool->key.key32[3]);
 473                 break;
 474         case PF_POOL_ROUNDROBIN:
 475                 printf(" round-robin");
 476                 break;
 477         }
 478         if (pool->opts & PF_POOL_STICKYADDR)
 479                 printf(" sticky-address");
 480         if (id == PF_NAT && p1 == 0 && p2 == 0)
 481                 printf(" static-port");
 482 }
 483
 484 const char      *pf_reasons[PFRES_MAX+1] = PFRES_NAMES;
 485 const char      *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES;
 486 const char      *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES;
 487 const char      *pf_scounters[FCNT_MAX+1] = FCNT_NAMES;
 488
 489 void
 490 print_status(struct pf_status *s, int opts)
 491 {
 492         char                    statline[80], *running;
 493         time_t                  runtime;
 494         int                     i;
 495         char                    buf[PF_MD5_DIGEST_LENGTH * 2 + 1];
 496         static const char       hex[] = "0123456789abcdef";
 497
 498         runtime = time(NULL) - s->since;
 499         running = s->running ? "Enabled" : "Disabled";
 500
 501         if (s->since) {
 502                 unsigned int    sec, min, hrs, day = runtime;
 503
 504                 sec = day % 60;
 505                 day /= 60;
 506                 min = day % 60;
 507                 day /= 60;
 508                 hrs = day % 24;
 509                 day /= 24;
 510                 snprintf(statline, sizeof(statline),
 511                     "Status: %s for %u days %.2u:%.2u:%.2u",
 512                     running, day, hrs, min, sec);
 513         } else
 514                 snprintf(statline, sizeof(statline), "Status: %s", running);
 515         printf("%-44s", statline);
 516         switch (s->debug) {
 517         case PF_DEBUG_NONE:
 518                 printf("%15s\n\n", "Debug: None");
 519                 break;
 520         case PF_DEBUG_URGENT:
 521                 printf("%15s\n\n", "Debug: Urgent");
 522                 break;
 523         case PF_DEBUG_MISC:
 524                 printf("%15s\n\n", "Debug: Misc");
 525                 break;
 526         case PF_DEBUG_NOISY:
 527                 printf("%15s\n\n", "Debug: Loud");
 528                 break;
 529         }
 530
 531         if (opts & PF_OPT_VERBOSE) {
 532                 printf("Hostid:   0x%08x\n", ntohl(s->hostid));
 533
 534                 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) {
 535                         buf[i + i] = hex[s->pf_chksum[i] >> 4];
 536                         buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f];
 537                 }
 538                 buf[i + i] = '\0';
 539                 printf("Checksum: 0x%s\n\n", buf);
 540         }
 541
 542         if (s->ifname[0] != 0) {
 543                 printf("Interface Stats for %-16s %5s %16s\n",
 544                     s->ifname, "IPv4", "IPv6");
 545                 printf("  %-25s %14llu %16llu\n", "Bytes In",
 546                     (unsigned long long)s->bcounters[0][0],
 547                     (unsigned long long)s->bcounters[1][0]);
 548                 printf("  %-25s %14llu %16llu\n", "Bytes Out",
 549                     (unsigned long long)s->bcounters[0][1],
 550                     (unsigned long long)s->bcounters[1][1]);
 551                 printf("  Packets In\n");
 552                 printf("    %-23s %14llu %16llu\n", "Passed",
 553                     (unsigned long long)s->pcounters[0][0][PF_PASS],
 554                     (unsigned long long)s->pcounters[1][0][PF_PASS]);
 555                 printf("    %-23s %14llu %16llu\n", "Blocked",
 556                     (unsigned long long)s->pcounters[0][0][PF_DROP],
 557                     (unsigned long long)s->pcounters[1][0][PF_DROP]);
 558                 printf("  Packets Out\n");
 559                 printf("    %-23s %14llu %16llu\n", "Passed",
 560                     (unsigned long long)s->pcounters[0][1][PF_PASS],
 561                     (unsigned long long)s->pcounters[1][1][PF_PASS]);
 562                 printf("    %-23s %14llu %16llu\n\n", "Blocked",
 563                     (unsigned long long)s->pcounters[0][1][PF_DROP],
 564                     (unsigned long long)s->pcounters[1][1][PF_DROP]);
 565         }
 566         printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
 567         printf("  %-25s %14u %14s\n", "current entries", s->states, "");
 568         for (i = 0; i < FCNT_MAX; i++) {
 569                 printf("  %-25s %14llu ", pf_fcounters[i],
 570                             (unsigned long long)s->fcounters[i]);
 571                 if (runtime > 0)
 572                         printf("%14.1f/s\n",
 573                             (double)s->fcounters[i] / (double)runtime);
 574                 else
 575                         printf("%14s\n", "");
 576         }
 577         if (opts & PF_OPT_VERBOSE) {
 578                 printf("Source Tracking Table\n");
 579                 printf("  %-25s %14u %14s\n", "current entries",
 580                     s->src_nodes, "");
 581                 for (i = 0; i < SCNT_MAX; i++) {
 582                         printf("  %-25s %14lld ", pf_scounters[i],
 583 #ifdef __FreeBSD__
 584                                     (long long)s->scounters[i]);
 585 #else
 586                                     s->scounters[i]);
 587 #endif
 588                         if (runtime > 0)
 589                                 printf("%14.1f/s\n",
 590                                     (double)s->scounters[i] / (double)runtime);
 591                         else
 592                                 printf("%14s\n", "");
 593                 }
 594         }
 595         printf("Counters\n");
 596         for (i = 0; i < PFRES_MAX; i++) {
 597                 printf("  %-25s %14llu ", pf_reasons[i],
 598                     (unsigned long long)s->counters[i]);
 599                 if (runtime > 0)
 600                         printf("%14.1f/s\n",
 601                             (double)s->counters[i] / (double)runtime);
 602                 else
 603                         printf("%14s\n", "");
 604         }
 605         if (opts & PF_OPT_VERBOSE) {
 606                 printf("Limit Counters\n");
 607                 for (i = 0; i < LCNT_MAX; i++) {
 608                         printf("  %-25s %14lld ", pf_lcounters[i],
 609 #ifdef __FreeBSD__
 610                                     (unsigned long long)s->lcounters[i]);
 611 #else
 612                                     s->lcounters[i]);
 613 #endif
 614                         if (runtime > 0)
 615                                 printf("%14.1f/s\n",
 616                                     (double)s->lcounters[i] / (double)runtime);
 617                         else
 618                                 printf("%14s\n", "");
 619                 }
 620         }
 621 }
 622
 623 void
 624 print_src_node(struct pf_src_node *sn, int opts)
 625 {
 626         struct pf_addr_wrap aw;
 627         int min, sec;
 628
 629         memset(&aw, 0, sizeof(aw));
 630         if (sn->af == AF_INET)
 631                 aw.v.a.mask.addr32[0] = 0xffffffff;
 632         else
 633                 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
 634
 635         aw.v.a.addr = sn->addr;
 636         print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
 637         printf(" -> ");
 638         aw.v.a.addr = sn->raddr;
 639         print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
 640         printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states,
 641             sn->conn, sn->conn_rate.count / 1000,
 642             (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds);
 643         if (opts & PF_OPT_VERBOSE) {
 644                 sec = sn->creation % 60;
 645                 sn->creation /= 60;
 646                 min = sn->creation % 60;
 647                 sn->creation /= 60;
 648                 printf("   age %.2u:%.2u:%.2u", sn->creation, min, sec);
 649                 if (sn->states == 0) {
 650                         sec = sn->expire % 60;
 651                         sn->expire /= 60;
 652                         min = sn->expire % 60;
 653                         sn->expire /= 60;
 654                         printf(", expires in %.2u:%.2u:%.2u",
 655                             sn->expire, min, sec);
 656                 }
 657                 printf(", %llu pkts, %llu bytes",
 658 #ifdef __FreeBSD__
 659                     (unsigned long long)(sn->packets[0] + sn->packets[1]),
 660                     (unsigned long long)(sn->bytes[0] + sn->bytes[1]));
 661 #else
 662                     sn->packets[0] + sn->packets[1],
 663                     sn->bytes[0] + sn->bytes[1]);
 664 #endif
 665                 switch (sn->ruletype) {
 666                 case PF_NAT:
 667                         if (sn->rule.nr != -1)
 668                                 printf(", nat rule %u", sn->rule.nr);
 669                         break;
 670                 case PF_RDR:
 671                         if (sn->rule.nr != -1)
 672                                 printf(", rdr rule %u", sn->rule.nr);
 673                         break;
 674                 case PF_PASS:
 675                         if (sn->rule.nr != -1)
 676                                 printf(", filter rule %u", sn->rule.nr);
 677                         break;
 678                 }
 679                 printf("\n");
 680         }
 681 }
 682
 683 void
 684 print_rule(struct pf_rule *r, const char *anchor_call, int verbose, int numeric)
 685 {
 686         static const char *actiontypes[] = { "pass", "block", "scrub",
 687             "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" };
 688         static const char *anchortypes[] = { "anchor", "anchor", "anchor",
 689             "anchor", "nat-anchor", "nat-anchor", "binat-anchor",
 690             "binat-anchor", "rdr-anchor", "rdr-anchor" };
 691         int     i, opts;
 692
 693         if (verbose)
 694                 printf("@%d ", r->nr);
 695         if (r->action > PF_NORDR)
 696                 printf("action(%d)", r->action);
 697         else if (anchor_call[0]) {
 698                 if (anchor_call[0] == '_') {
 699                         printf("%s", anchortypes[r->action]);
 700                 } else
 701                         printf("%s \"%s\"", anchortypes[r->action],
 702                             anchor_call);
 703         } else {
 704                 printf("%s", actiontypes[r->action]);
 705                 if (r->natpass)
 706                         printf(" pass");
 707         }
 708         if (r->action == PF_DROP) {
 709                 if (r->rule_flag & PFRULE_RETURN)
 710                         printf(" return");
 711                 else if (r->rule_flag & PFRULE_RETURNRST) {
 712                         if (!r->return_ttl)
 713                                 printf(" return-rst");
 714                         else
 715                                 printf(" return-rst(ttl %d)", r->return_ttl);
 716                 } else if (r->rule_flag & PFRULE_RETURNICMP) {
 717                         const struct icmpcodeent        *ic, *ic6;
 718
 719                         ic = geticmpcodebynumber(r->return_icmp >> 8,
 720                             r->return_icmp & 255, AF_INET);
 721                         ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
 722                             r->return_icmp6 & 255, AF_INET6);
 723
 724                         switch (r->af) {
 725                         case AF_INET:
 726                                 printf(" return-icmp");
 727                                 if (ic == NULL)
 728                                         printf("(%u)", r->return_icmp & 255);
 729                                 else
 730                                         printf("(%s)", ic->name);
 731                                 break;
 732                         case AF_INET6:
 733                                 printf(" return-icmp6");
 734                                 if (ic6 == NULL)
 735                                         printf("(%u)", r->return_icmp6 & 255);
 736                                 else
 737                                         printf("(%s)", ic6->name);
 738                                 break;
 739                         default:
 740                                 printf(" return-icmp");
 741                                 if (ic == NULL)
 742                                         printf("(%u, ", r->return_icmp & 255);
 743                                 else
 744                                         printf("(%s, ", ic->name);
 745                                 if (ic6 == NULL)
 746                                         printf("%u)", r->return_icmp6 & 255);
 747                                 else
 748                                         printf("%s)", ic6->name);
 749                                 break;
 750                         }
 751                 } else
 752                         printf(" drop");
 753         }
 754         if (r->direction == PF_IN)
 755                 printf(" in");
 756         else if (r->direction == PF_OUT)
 757                 printf(" out");
 758         if (r->log) {
 759                 printf(" log");
 760                 if (r->log & ~PF_LOG || r->logif) {
 761                         int count = 0;
 762
 763                         printf(" (");
 764                         if (r->log & PF_LOG_ALL)
 765                                 printf("%sall", count++ ? ", " : "");
 766                         if (r->log & PF_LOG_SOCKET_LOOKUP)
 767                                 printf("%suser", count++ ? ", " : "");
 768                         if (r->logif)
 769                                 printf("%sto pflog%u", count++ ? ", " : "",
 770                                     r->logif);
 771                         printf(")");
 772                 }
 773         }
 774         if (r->quick)
 775                 printf(" quick");
 776         if (r->ifname[0]) {
 777                 if (r->ifnot)
 778                         printf(" on ! %s", r->ifname);
 779                 else
 780                         printf(" on %s", r->ifname);
 781         }
 782         if (r->rt) {
 783                 if (r->rt == PF_ROUTETO)
 784                         printf(" route-to");
 785                 else if (r->rt == PF_REPLYTO)
 786                         printf(" reply-to");
 787                 else if (r->rt == PF_DUPTO)
 788                         printf(" dup-to");
 789                 else if (r->rt == PF_FASTROUTE)
 790                         printf(" fastroute");
 791                 if (r->rt != PF_FASTROUTE) {
 792                         printf(" ");
 793                         print_pool(&r->rpool, 0, 0, r->af, PF_PASS);
 794                 }
 795         }
 796         if (r->af) {
 797                 if (r->af == AF_INET)
 798                         printf(" inet");
 799                 else
 800                         printf(" inet6");
 801         }
 802         if (r->proto) {
 803                 struct protoent *p;
 804
 805                 if ((p = getprotobynumber(r->proto)) != NULL)
 806                         printf(" proto %s", p->p_name);
 807                 else
 808                         printf(" proto %u", r->proto);
 809         }
 810         print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto,
 811             verbose, numeric);
 812         if (r->uid.op)
 813                 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user",
 814                     UID_MAX);
 815         if (r->gid.op)
 816                 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group",
 817                     GID_MAX);
 818         if (r->flags || r->flagset) {
 819                 printf(" flags ");
 820                 print_flags(r->flags);
 821                 printf("/");
 822                 print_flags(r->flagset);
 823         } else if (r->action == PF_PASS &&
 824             (!r->proto || r->proto == IPPROTO_TCP) &&
 825             !(r->rule_flag & PFRULE_FRAGMENT) &&
 826             !anchor_call[0] && r->keep_state)
 827                 printf(" flags any");
 828         if (r->type) {
 829                 const struct icmptypeent        *it;
 830
 831                 it = geticmptypebynumber(r->type-1, r->af);
 832                 if (r->af != AF_INET6)
 833                         printf(" icmp-type");
 834                 else
 835                         printf(" icmp6-type");
 836                 if (it != NULL)
 837                         printf(" %s", it->name);
 838                 else
 839                         printf(" %u", r->type-1);
 840                 if (r->code) {
 841                         const struct icmpcodeent        *ic;
 842
 843                         ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
 844                         if (ic != NULL)
 845                                 printf(" code %s", ic->name);
 846                         else
 847                                 printf(" code %u", r->code-1);
 848                 }
 849         }
 850         if (r->tos)
 851                 printf(" tos 0x%2.2x", r->tos);
 852         if (!r->keep_state && r->action == PF_PASS && !anchor_call[0])
 853                 printf(" no state");
 854         else if (r->keep_state == PF_STATE_NORMAL)
 855                 printf(" keep state");
 856         else if (r->keep_state == PF_STATE_MODULATE)
 857                 printf(" modulate state");
 858         else if (r->keep_state == PF_STATE_SYNPROXY)
 859                 printf(" synproxy state");
 860         if (r->prob) {
 861                 char    buf[20];
 862
 863                 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
 864                 for (i = strlen(buf)-1; i > 0; i--) {
 865                         if (buf[i] == '0')
 866                                 buf[i] = '\0';
 867                         else {
 868                                 if (buf[i] == '.')
 869                                         buf[i] = '\0';
 870                                 break;
 871                         }
 872                 }
 873                 printf(" probability %s%%", buf);
 874         }
 875         opts = 0;
 876         if (r->max_states || r->max_src_nodes || r->max_src_states)
 877                 opts = 1;
 878         if (r->rule_flag & PFRULE_NOSYNC)
 879                 opts = 1;
 880         if (r->rule_flag & PFRULE_SRCTRACK)
 881                 opts = 1;
 882         if (r->rule_flag & PFRULE_IFBOUND)
 883                 opts = 1;
 884         if (r->rule_flag & PFRULE_STATESLOPPY)
 885                 opts = 1;
 886         for (i = 0; !opts && i < PFTM_MAX; ++i)
 887                 if (r->timeout[i])
 888                         opts = 1;
 889         if (opts) {
 890                 printf(" (");
 891                 if (r->max_states) {
 892                         printf("max %u", r->max_states);
 893                         opts = 0;
 894                 }
 895                 if (r->rule_flag & PFRULE_NOSYNC) {
 896                         if (!opts)
 897                                 printf(", ");
 898                         printf("no-sync");
 899                         opts = 0;
 900                 }
 901                 if (r->rule_flag & PFRULE_SRCTRACK) {
 902                         if (!opts)
 903                                 printf(", ");
 904                         printf("source-track");
 905                         if (r->rule_flag & PFRULE_RULESRCTRACK)
 906                                 printf(" rule");
 907                         else
 908                                 printf(" global");
 909                         opts = 0;
 910                 }
 911                 if (r->max_src_states) {
 912                         if (!opts)
 913                                 printf(", ");
 914                         printf("max-src-states %u", r->max_src_states);
 915                         opts = 0;
 916                 }
 917                 if (r->max_src_conn) {
 918                         if (!opts)
 919                                 printf(", ");
 920                         printf("max-src-conn %u", r->max_src_conn);
 921                         opts = 0;
 922                 }
 923                 if (r->max_src_conn_rate.limit) {
 924                         if (!opts)
 925                                 printf(", ");
 926                         printf("max-src-conn-rate %u/%u",
 927                             r->max_src_conn_rate.limit,
 928                             r->max_src_conn_rate.seconds);
 929                         opts = 0;
 930                 }
 931                 if (r->max_src_nodes) {
 932                         if (!opts)
 933                                 printf(", ");
 934                         printf("max-src-nodes %u", r->max_src_nodes);
 935                         opts = 0;
 936                 }
 937                 if (r->overload_tblname[0]) {
 938                         if (!opts)
 939                                 printf(", ");
 940                         printf("overload <%s>", r->overload_tblname);
 941                         if (r->flush)
 942                                 printf(" flush");
 943                         if (r->flush & PF_FLUSH_GLOBAL)
 944                                 printf(" global");
 945                 }
 946                 if (r->rule_flag & PFRULE_IFBOUND) {
 947                         if (!opts)
 948                                 printf(", ");
 949                         printf("if-bound");
 950                         opts = 0;
 951                 }
 952                 if (r->rule_flag & PFRULE_STATESLOPPY) {
 953                         if (!opts)
 954                                 printf(", ");
 955                         printf("sloppy");
 956                         opts = 0;
 957                 }
 958                 for (i = 0; i < PFTM_MAX; ++i)
 959                         if (r->timeout[i]) {
 960                                 int j;
 961
 962                                 if (!opts)
 963                                         printf(", ");
 964                                 opts = 0;
 965                                 for (j = 0; pf_timeouts[j].name != NULL;
 966                                     ++j)
 967                                         if (pf_timeouts[j].timeout == i)
 968                                                 break;
 969                                 printf("%s %u", pf_timeouts[j].name == NULL ?
 970                                     "inv.timeout" : pf_timeouts[j].name,
 971                                     r->timeout[i]);
 972                         }
 973                 printf(")");
 974         }
 975         if (r->rule_flag & PFRULE_FRAGMENT)
 976                 printf(" fragment");
 977         if (r->rule_flag & PFRULE_NODF)
 978                 printf(" no-df");
 979         if (r->rule_flag & PFRULE_RANDOMID)
 980                 printf(" random-id");
 981         if (r->min_ttl)
 982                 printf(" min-ttl %d", r->min_ttl);
 983         if (r->max_mss)
 984                 printf(" max-mss %d", r->max_mss);
 985         if (r->rule_flag & PFRULE_SET_TOS)
 986                 printf(" set-tos 0x%2.2x", r->set_tos);
 987         if (r->allow_opts)
 988                 printf(" allow-opts");
 989         if (r->action == PF_SCRUB) {
 990                 if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
 991                         printf(" reassemble tcp");
 992
 993                 if (r->rule_flag & PFRULE_FRAGDROP)
 994                         printf(" fragment drop-ovl");
 995                 else if (r->rule_flag & PFRULE_FRAGCROP)
 996                         printf(" fragment crop");
 997                 else
 998                         printf(" fragment reassemble");
 999         }
1000         if (r->label[0])
1001                 printf(" label \"%s\"", r->label);
1002         if (r->qname[0] && r->pqname[0])
1003                 printf(" queue(%s, %s)", r->qname, r->pqname);
1004         else if (r->qname[0])
1005                 printf(" queue %s", r->qname);
1006         if (r->tagname[0])
1007                 printf(" tag %s", r->tagname);
1008         if (r->match_tagname[0]) {
1009                 if (r->match_tag_not)
1010                         printf(" !");
1011                 printf(" tagged %s", r->match_tagname);
1012         }
1013         if (r->rtableid != -1)
1014                 printf(" rtable %u", r->rtableid);
1015         if (r->divert.port) {
1016 #ifdef __FreeBSD__
1017                 printf(" divert-to %u", ntohs(r->divert.port));
1018 #else
1019                 if (PF_AZERO(&r->divert.addr, r->af)) {
1020                         printf(" divert-reply");
1021                 } else {
1022                         /* XXX cut&paste from print_addr */
1023                         char buf[48];
1024
1025                         printf(" divert-to ");
1026                         if (inet_ntop(r->af, &r->divert.addr, buf,
1027                             sizeof(buf)) == NULL)
1028                                 printf("?");
1029                         else
1030                                 printf("%s", buf);
1031                         printf(" port %u", ntohs(r->divert.port));
1032                 }
1033 #endif
1034         }
1035         if (!anchor_call[0] && (r->action == PF_NAT ||
1036             r->action == PF_BINAT || r->action == PF_RDR)) {
1037                 printf(" -> ");
1038                 print_pool(&r->rpool, r->rpool.proxy_port[0],
1039                     r->rpool.proxy_port[1], r->af, r->action);
1040         }
1041 }
1042
1043 void
1044 print_tabledef(const char *name, int flags, int addrs,
1045     struct node_tinithead *nodes)
1046 {
1047         struct node_tinit       *ti, *nti;
1048         struct node_host        *h;
1049
1050         printf("table <%s>", name);
1051         if (flags & PFR_TFLAG_CONST)
1052                 printf(" const");
1053         if (flags & PFR_TFLAG_PERSIST)
1054                 printf(" persist");
1055         if (flags & PFR_TFLAG_COUNTERS)
1056                 printf(" counters");
1057         SIMPLEQ_FOREACH(ti, nodes, entries) {
1058                 if (ti->file) {
1059                         printf(" file \"%s\"", ti->file);
1060                         continue;
1061                 }
1062                 printf(" {");
1063                 for (;;) {
1064                         for (h = ti->host; h != NULL; h = h->next) {
1065                                 printf(h->not ? " !" : " ");
1066                                 print_addr(&h->addr, h->af, 0);
1067                         }
1068                         nti = SIMPLEQ_NEXT(ti, entries);
1069                         if (nti != NULL && nti->file == NULL)
1070                                 ti = nti;       /* merge lists */
1071                         else
1072                                 break;
1073                 }
1074                 printf(" }");
1075         }
1076         if (addrs && SIMPLEQ_EMPTY(nodes))
1077                 printf(" { }");
1078         printf("\n");
1079 }
1080
1081 int
1082 parse_flags(char *s)
1083 {
1084         char            *p, *q;
1085         u_int8_t         f = 0;
1086
1087         for (p = s; *p; p++) {
1088                 if ((q = strchr(tcpflags, *p)) == NULL)
1089                         return -1;
1090                 else
1091                         f |= 1 << (q - tcpflags);
1092         }
1093         return (f ? f : PF_TH_ALL);
1094 }
1095
1096 void
1097 set_ipmask(struct node_host *h, u_int8_t b)
1098 {
1099         struct pf_addr  *m, *n;
1100         int              i, j = 0;
1101
1102         m = &h->addr.v.a.mask;
1103         memset(m, 0, sizeof(*m));
1104
1105         while (b >= 32) {
1106                 m->addr32[j++] = 0xffffffff;
1107                 b -= 32;
1108         }
1109         for (i = 31; i > 31-b; --i)
1110                 m->addr32[j] |= (1 << i);
1111         if (b)
1112                 m->addr32[j] = htonl(m->addr32[j]);
1113
1114         /* Mask off bits of the address that will never be used. */
1115         n = &h->addr.v.a.addr;
1116         if (h->addr.type == PF_ADDR_ADDRMASK)
1117                 for (i = 0; i < 4; i++)
1118                         n->addr32[i] = n->addr32[i] & m->addr32[i];
1119 }
1120
1121 int
1122 check_netmask(struct node_host *h, sa_family_t af)
1123 {
1124         struct node_host        *n = NULL;
1125         struct pf_addr  *m;
1126
1127         for (n = h; n != NULL; n = n->next) {
1128                 if (h->addr.type == PF_ADDR_TABLE)
1129                         continue;
1130                 m = &h->addr.v.a.mask;
1131                 /* fix up netmask for dynaddr */
1132                 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL &&
1133                     unmask(m, AF_INET6) > 32)
1134                         set_ipmask(n, 32);
1135                 /* netmasks > 32 bit are invalid on v4 */
1136                 if (af == AF_INET &&
1137                     (m->addr32[1] || m->addr32[2] || m->addr32[3])) {
1138                         fprintf(stderr, "netmask %u invalid for IPv4 address\n",
1139                             unmask(m, AF_INET6));
1140                         return (1);
1141                 }
1142         }
1143         return (0);
1144 }
1145
1146 /* interface lookup routines */
1147
1148 struct node_host        *iftab;
1149
1150 void
1151 ifa_load(void)
1152 {
1153         struct ifaddrs          *ifap, *ifa;
1154         struct node_host        *n = NULL, *h = NULL;
1155
1156         if (getifaddrs(&ifap) < 0)
1157                 err(1, "getifaddrs");
1158
1159         for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1160                 if (!(ifa->ifa_addr->sa_family == AF_INET ||
1161                     ifa->ifa_addr->sa_family == AF_INET6 ||
1162                     ifa->ifa_addr->sa_family == AF_LINK))
1163                                 continue;
1164                 n = calloc(1, sizeof(struct node_host));
1165                 if (n == NULL)
1166                         err(1, "address: calloc");
1167                 n->af = ifa->ifa_addr->sa_family;
1168                 n->ifa_flags = ifa->ifa_flags;
1169 #ifdef __KAME__
1170                 if (n->af == AF_INET6 &&
1171                     IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
1172                     ifa->ifa_addr)->sin6_addr) &&
1173                     ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
1174                     0) {
1175                         struct sockaddr_in6     *sin6;
1176
1177                         sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1178                         sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
1179                             sin6->sin6_addr.s6_addr[3];
1180                         sin6->sin6_addr.s6_addr[2] = 0;
1181                         sin6->sin6_addr.s6_addr[3] = 0;
1182                 }
1183 #endif
1184                 n->ifindex = 0;
1185                 if (n->af == AF_INET) {
1186                         memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *)
1187                             ifa->ifa_addr)->sin_addr.s_addr,
1188                             sizeof(struct in_addr));
1189                         memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *)
1190                             ifa->ifa_netmask)->sin_addr.s_addr,
1191                             sizeof(struct in_addr));
1192                         if (ifa->ifa_broadaddr != NULL)
1193                                 memcpy(&n->bcast, &((struct sockaddr_in *)
1194                                     ifa->ifa_broadaddr)->sin_addr.s_addr,
1195                                     sizeof(struct in_addr));
1196                         if (ifa->ifa_dstaddr != NULL)
1197                                 memcpy(&n->peer, &((struct sockaddr_in *)
1198                                     ifa->ifa_dstaddr)->sin_addr.s_addr,
1199                                     sizeof(struct in_addr));
1200                 } else if (n->af == AF_INET6) {
1201                         memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *)
1202                             ifa->ifa_addr)->sin6_addr.s6_addr,
1203                             sizeof(struct in6_addr));
1204                         memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *)
1205                             ifa->ifa_netmask)->sin6_addr.s6_addr,
1206                             sizeof(struct in6_addr));
1207                         if (ifa->ifa_broadaddr != NULL)
1208                                 memcpy(&n->bcast, &((struct sockaddr_in6 *)
1209                                     ifa->ifa_broadaddr)->sin6_addr.s6_addr,
1210                                     sizeof(struct in6_addr));
1211                         if (ifa->ifa_dstaddr != NULL)
1212                                  memcpy(&n->peer, &((struct sockaddr_in6 *)
1213                                     ifa->ifa_dstaddr)->sin6_addr.s6_addr,
1214                                     sizeof(struct in6_addr));
1215                         n->ifindex = ((struct sockaddr_in6 *)
1216                             ifa->ifa_addr)->sin6_scope_id;
1217                 }
1218                 if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
1219                         err(1, "ifa_load: strdup");
1220                 n->next = NULL;
1221                 n->tail = n;
1222                 if (h == NULL)
1223                         h = n;
1224                 else {
1225                         h->tail->next = n;
1226                         h->tail = n;
1227                 }
1228         }
1229
1230         iftab = h;
1231         freeifaddrs(ifap);
1232 }
1233
1234 struct node_host *
1235 ifa_exists(const char *ifa_name)
1236 {
1237         struct node_host        *n;
1238         struct ifgroupreq       ifgr;
1239         int                     s;
1240
1241         if (iftab == NULL)
1242                 ifa_load();
1243
1244         /* check wether this is a group */
1245         if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
1246                 err(1, "socket");
1247         bzero(&ifgr, sizeof(ifgr));
1248         strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
1249         if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == 0) {
1250                 /* fake a node_host */
1251                 if ((n = calloc(1, sizeof(*n))) == NULL)
1252                         err(1, "calloc");
1253                 if ((n->ifname = strdup(ifa_name)) == NULL)
1254                         err(1, "strdup");
1255                 close(s);
1256                 return (n);
1257         }
1258         close(s);
1259
1260         for (n = iftab; n; n = n->next) {
1261                 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
1262                         return (n);
1263         }
1264
1265         return (NULL);
1266 }
1267
1268 struct node_host *
1269 ifa_grouplookup(const char *ifa_name, int flags)
1270 {
1271         struct ifg_req          *ifg;
1272         struct ifgroupreq        ifgr;
1273         int                      s, len;
1274         struct node_host        *n, *h = NULL;
1275
1276         if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
1277                 err(1, "socket");
1278         bzero(&ifgr, sizeof(ifgr));
1279         strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
1280         if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) {
1281                 close(s);
1282                 return (NULL);
1283         }
1284
1285         len = ifgr.ifgr_len;
1286         if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
1287                 err(1, "calloc");
1288         if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
1289                 err(1, "SIOCGIFGMEMB");
1290
1291         for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req);
1292             ifg++) {
1293                 len -= sizeof(struct ifg_req);
1294                 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL)
1295                         continue;
1296                 if (h == NULL)
1297                         h = n;
1298                 else {
1299                         h->tail->next = n;
1300                         h->tail = n->tail;
1301                 }
1302         }
1303         free(ifgr.ifgr_groups);
1304         close(s);
1305
1306         return (h);
1307 }
1308
1309 struct node_host *
1310 ifa_lookup(const char *ifa_name, int flags)
1311 {
1312         struct node_host        *p = NULL, *h = NULL, *n = NULL;
1313         int                      got4 = 0, got6 = 0;
1314         const char               *last_if = NULL;
1315
1316         if ((h = ifa_grouplookup(ifa_name, flags)) != NULL)
1317                 return (h);
1318
1319         if (!strncmp(ifa_name, "self", IFNAMSIZ))
1320                 ifa_name = NULL;
1321
1322         if (iftab == NULL)
1323                 ifa_load();
1324
1325         for (p = iftab; p; p = p->next) {
1326                 if (ifa_skip_if(ifa_name, p))
1327                         continue;
1328                 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
1329                         continue;
1330                 if ((flags & PFI_AFLAG_BROADCAST) &&
1331                     !(p->ifa_flags & IFF_BROADCAST))
1332                         continue;
1333                 if ((flags & PFI_AFLAG_PEER) &&
1334                     !(p->ifa_flags & IFF_POINTOPOINT))
1335                         continue;
1336                 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
1337                         continue;
1338                 if (last_if == NULL || strcmp(last_if, p->ifname))
1339                         got4 = got6 = 0;
1340                 last_if = p->ifname;
1341                 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
1342                         continue;
1343                 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
1344                         continue;
1345                 if (p->af == AF_INET)
1346                         got4 = 1;
1347                 else
1348                         got6 = 1;
1349                 n = calloc(1, sizeof(struct node_host));
1350                 if (n == NULL)
1351                         err(1, "address: calloc");
1352                 n->af = p->af;
1353                 if (flags & PFI_AFLAG_BROADCAST)
1354                         memcpy(&n->addr.v.a.addr, &p->bcast,
1355                             sizeof(struct pf_addr));
1356                 else if (flags & PFI_AFLAG_PEER)
1357                         memcpy(&n->addr.v.a.addr, &p->peer,
1358                             sizeof(struct pf_addr));
1359                 else
1360                         memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
1361                             sizeof(struct pf_addr));
1362                 if (flags & PFI_AFLAG_NETWORK)
1363                         set_ipmask(n, unmask(&p->addr.v.a.mask, n->af));
1364                 else {
1365                         if (n->af == AF_INET) {
1366                                 if (p->ifa_flags & IFF_LOOPBACK &&
1367                                     p->ifa_flags & IFF_LINK1)
1368                                         memcpy(&n->addr.v.a.mask,
1369                                             &p->addr.v.a.mask,
1370                                             sizeof(struct pf_addr));
1371                                 else
1372                                         set_ipmask(n, 32);
1373                         } else
1374                                 set_ipmask(n, 128);
1375                 }
1376                 n->ifindex = p->ifindex;
1377
1378                 n->next = NULL;
1379                 n->tail = n;
1380                 if (h == NULL)
1381                         h = n;
1382                 else {
1383                         h->tail->next = n;
1384                         h->tail = n;
1385                 }
1386         }
1387         return (h);
1388 }
1389
1390 int
1391 ifa_skip_if(const char *filter, struct node_host *p)
1392 {
1393         int     n;
1394
1395         if (p->af != AF_INET && p->af != AF_INET6)
1396                 return (1);
1397         if (filter == NULL || !*filter)
1398                 return (0);
1399         if (!strcmp(p->ifname, filter))
1400                 return (0);     /* exact match */
1401         n = strlen(filter);
1402         if (n < 1 || n >= IFNAMSIZ)
1403                 return (1);     /* sanity check */
1404         if (filter[n-1] >= '0' && filter[n-1] <= '9')
1405                 return (1);     /* only do exact match in that case */
1406         if (strncmp(p->ifname, filter, n))
1407                 return (1);     /* prefix doesn't match */
1408         return (p->ifname[n] < '0' || p->ifname[n] > '9');
1409 }
1410
1411
1412 struct node_host *
1413 host(const char *s)
1414 {
1415         struct node_host        *h = NULL;
1416         int                      mask, v4mask, v6mask, cont = 1;
1417         char                    *p, *q, *ps;
1418
1419         if ((p = strrchr(s, '/')) != NULL) {
1420                 mask = strtol(p+1, &q, 0);
1421                 if (!q || *q || mask > 128 || q == (p+1)) {
1422                         fprintf(stderr, "invalid netmask '%s'\n", p);
1423                         return (NULL);
1424                 }
1425                 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
1426                         err(1, "host: malloc");
1427                 strlcpy(ps, s, strlen(s) - strlen(p) + 1);
1428                 v4mask = v6mask = mask;
1429         } else {
1430                 if ((ps = strdup(s)) == NULL)
1431                         err(1, "host: strdup");
1432                 v4mask = 32;
1433                 v6mask = 128;
1434                 mask = -1;
1435         }
1436
1437         /* interface with this name exists? */
1438         if (cont && (h = host_if(ps, mask)) != NULL)
1439                 cont = 0;
1440
1441         /* IPv4 address? */
1442         if (cont && (h = host_v4(s, mask)) != NULL)
1443                 cont = 0;
1444
1445         /* IPv6 address? */
1446         if (cont && (h = host_v6(ps, v6mask)) != NULL)
1447                 cont = 0;
1448
1449         /* dns lookup */
1450         if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL)
1451                 cont = 0;
1452         free(ps);
1453
1454         if (h == NULL || cont == 1) {
1455                 fprintf(stderr, "no IP address found for %s\n", s);
1456                 return (NULL);
1457         }
1458         return (h);
1459 }
1460
1461 struct node_host *
1462 host_if(const char *s, int mask)
1463 {
1464         struct node_host        *n, *h = NULL;
1465         char                    *p, *ps;
1466         int                      flags = 0;
1467
1468         if ((ps = strdup(s)) == NULL)
1469                 err(1, "host_if: strdup");
1470         while ((p = strrchr(ps, ':')) != NULL) {
1471                 if (!strcmp(p+1, "network"))
1472                         flags |= PFI_AFLAG_NETWORK;
1473                 else if (!strcmp(p+1, "broadcast"))
1474                         flags |= PFI_AFLAG_BROADCAST;
1475                 else if (!strcmp(p+1, "peer"))
1476                         flags |= PFI_AFLAG_PEER;
1477                 else if (!strcmp(p+1, "0"))
1478                         flags |= PFI_AFLAG_NOALIAS;
1479                 else {
1480                         free(ps);
1481                         return (NULL);
1482                 }
1483                 *p = '\0';
1484         }
1485         if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
1486                 fprintf(stderr, "illegal combination of interface modifiers\n");
1487                 free(ps);
1488                 return (NULL);
1489         }
1490         if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
1491                 fprintf(stderr, "network or broadcast lookup, but "
1492                     "extra netmask given\n");
1493                 free(ps);
1494                 return (NULL);
1495         }
1496         if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) {
1497                 /* interface with this name exists */
1498                 h = ifa_lookup(ps, flags);
1499                 for (n = h; n != NULL && mask > -1; n = n->next)
1500                         set_ipmask(n, mask);
1501         }
1502
1503         free(ps);
1504         return (h);
1505 }
1506
1507 struct node_host *
1508 host_v4(const char *s, int mask)
1509 {
1510         struct node_host        *h = NULL;
1511         struct in_addr           ina;
1512         int                      bits = 32;
1513
1514         memset(&ina, 0, sizeof(struct in_addr));
1515         if (strrchr(s, '/') != NULL) {
1516                 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1)
1517                         return (NULL);
1518         } else {
1519                 if (inet_pton(AF_INET, s, &ina) != 1)
1520                         return (NULL);
1521         }
1522
1523         h = calloc(1, sizeof(struct node_host));
1524         if (h == NULL)
1525                 err(1, "address: calloc");
1526         h->ifname = NULL;
1527         h->af = AF_INET;
1528         h->addr.v.a.addr.addr32[0] = ina.s_addr;
1529         set_ipmask(h, bits);
1530         h->next = NULL;
1531         h->tail = h;
1532
1533         return (h);
1534 }
1535
1536 struct node_host *
1537 host_v6(const char *s, int mask)
1538 {
1539         struct addrinfo          hints, *res;
1540         struct node_host        *h = NULL;
1541
1542         memset(&hints, 0, sizeof(hints));
1543         hints.ai_family = AF_INET6;
1544         hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1545         hints.ai_flags = AI_NUMERICHOST;
1546         if (getaddrinfo(s, "0", &hints, &res) == 0) {
1547                 h = calloc(1, sizeof(struct node_host));
1548                 if (h == NULL)
1549                         err(1, "address: calloc");
1550                 h->ifname = NULL;
1551                 h->af = AF_INET6;
1552                 memcpy(&h->addr.v.a.addr,
1553                     &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
1554                     sizeof(h->addr.v.a.addr));
1555                 h->ifindex =
1556                     ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1557                 set_ipmask(h, mask);
1558                 freeaddrinfo(res);
1559                 h->next = NULL;
1560                 h->tail = h;
1561         }
1562
1563         return (h);
1564 }
1565
1566 struct node_host *
1567 host_dns(const char *s, int v4mask, int v6mask)
1568 {
1569         struct addrinfo          hints, *res0, *res;
1570         struct node_host        *n, *h = NULL;
1571         int                      error, noalias = 0;
1572         int                      got4 = 0, got6 = 0;
1573         char                    *p, *ps;
1574
1575         if ((ps = strdup(s)) == NULL)
1576                 err(1, "host_dns: strdup");
1577         if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
1578                 noalias = 1;
1579                 *p = '\0';
1580         }
1581         memset(&hints, 0, sizeof(hints));
1582         hints.ai_family = PF_UNSPEC;
1583         hints.ai_socktype = SOCK_STREAM; /* DUMMY */
1584         error = getaddrinfo(ps, NULL, &hints, &res0);
1585         if (error) {
1586                 free(ps);
1587                 return (h);
1588         }
1589
1590         for (res = res0; res; res = res->ai_next) {
1591                 if (res->ai_family != AF_INET &&
1592                     res->ai_family != AF_INET6)
1593                         continue;
1594                 if (noalias) {
1595                         if (res->ai_family == AF_INET) {
1596                                 if (got4)
1597                                         continue;
1598                                 got4 = 1;
1599                         } else {
1600                                 if (got6)
1601                                         continue;
1602                                 got6 = 1;
1603                         }
1604                 }
1605                 n = calloc(1, sizeof(struct node_host));
1606                 if (n == NULL)
1607                         err(1, "host_dns: calloc");
1608                 n->ifname = NULL;
1609                 n->af = res->ai_family;
1610                 if (res->ai_family == AF_INET) {
1611                         memcpy(&n->addr.v.a.addr,
1612                             &((struct sockaddr_in *)
1613                             res->ai_addr)->sin_addr.s_addr,
1614                             sizeof(struct in_addr));
1615                         set_ipmask(n, v4mask);
1616                 } else {
1617                         memcpy(&n->addr.v.a.addr,
1618                             &((struct sockaddr_in6 *)
1619                             res->ai_addr)->sin6_addr.s6_addr,
1620                             sizeof(struct in6_addr));
1621                         n->ifindex =
1622                             ((struct sockaddr_in6 *)
1623                             res->ai_addr)->sin6_scope_id;
1624                         set_ipmask(n, v6mask);
1625                 }
1626                 n->next = NULL;
1627                 n->tail = n;
1628                 if (h == NULL)
1629                         h = n;
1630                 else {
1631                         h->tail->next = n;
1632                         h->tail = n;
1633                 }
1634         }
1635         freeaddrinfo(res0);
1636         free(ps);
1637
1638         return (h);
1639 }
1640
1641 /*
1642  * convert a hostname to a list of addresses and put them in the given buffer.
1643  * test:
1644  *      if set to 1, only simple addresses are accepted (no netblock, no "!").
1645  */
1646 int
1647 append_addr(struct pfr_buffer *b, char *s, int test)
1648 {
1649         char                     *r;
1650         struct node_host        *h, *n;
1651         int                      rv, not = 0;
1652
1653         for (r = s; *r == '!'; r++)
1654                 not = !not;
1655         if ((n = host(r)) == NULL) {
1656                 errno = 0;
1657                 return (-1);
1658         }
1659         rv = append_addr_host(b, n, test, not);
1660         do {
1661                 h = n;
1662                 n = n->next;
1663                 free(h);
1664         } while (n != NULL);
1665         return (rv);
1666 }
1667
1668 /*
1669  * same as previous function, but with a pre-parsed input and the ability
1670  * to "negate" the result. Does not free the node_host list.
1671  * not:
1672  *      setting it to 1 is equivalent to adding "!" in front of parameter s.
1673  */
1674 int
1675 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
1676 {
1677         int                      bits;
1678         struct pfr_addr          addr;
1679
1680         do {
1681                 bzero(&addr, sizeof(addr));
1682                 addr.pfra_not = n->not ^ not;
1683                 addr.pfra_af = n->af;
1684                 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af);
1685                 switch (n->af) {
1686                 case AF_INET:
1687                         addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
1688                         bits = 32;
1689                         break;
1690                 case AF_INET6:
1691                         memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
1692                             sizeof(struct in6_addr));
1693                         bits = 128;
1694                         break;
1695                 default:
1696                         errno = EINVAL;
1697                         return (-1);
1698                 }
1699                 if ((test && (not || addr.pfra_net != bits)) ||
1700                     addr.pfra_net > bits) {
1701                         errno = EINVAL;
1702                         return (-1);
1703                 }
1704                 if (pfr_buf_add(b, &addr))
1705                         return (-1);
1706         } while ((n = n->next) != NULL);
1707
1708         return (0);
1709 }
1710
1711 int
1712 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor)
1713 {
1714         struct pfioc_trans_e trans;
1715
1716         bzero(&trans, sizeof(trans));
1717         trans.rs_num = rs_num;
1718         if (strlcpy(trans.anchor, anchor,
1719             sizeof(trans.anchor)) >= sizeof(trans.anchor))
1720                 errx(1, "pfctl_add_trans: strlcpy");
1721
1722         return pfr_buf_add(buf, &trans);
1723 }
1724
1725 u_int32_t
1726 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor)
1727 {
1728         struct pfioc_trans_e *p;
1729
1730         PFRB_FOREACH(p, buf)
1731                 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor))
1732                         return (p->ticket);
1733         errx(1, "pfctl_get_ticket: assertion failed");
1734 }
1735
1736 int
1737 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
1738 {
1739         struct pfioc_trans trans;
1740
1741         bzero(&trans, sizeof(trans));
1742         trans.size = buf->pfrb_size - from;
1743         trans.esize = sizeof(struct pfioc_trans_e);
1744         trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
1745         return ioctl(dev, cmd, &trans);
1746 }