sbin/pfctl/pfctl_parser.c

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