sbin/pfctl/pfctl_parser.c

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