sbin/pfctl/pfctl_parser.c

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