usr.sbin/pfctl/pfctl_parser.c

   1 /*      $OpenBSD: pfctl_parser.c,v 1.194.2.1 2004/05/05 04:00:50 brad Exp $ */
   2 /*      $DragonFly: src/usr.sbin/pfctl/pfctl_parser.c,v 1.2 2008/04/06 21:12:40 dillon Exp $ */
   3
   4 /*
   5  * Copyright (c) 2001 Daniel Hartmeier
   6  * Copyright (c) 2002,2003 Henning Brauer
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  *    - Redistributions of source code must retain the above copyright
  14  *      notice, this list of conditions and the following disclaimer.
  15  *    - Redistributions in binary form must reproduce the above
  16  *      copyright notice, this list of conditions and the following
  17  *      disclaimer in the documentation and/or other materials provided
  18  *      with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  24  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  28  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  30  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  */
  34
  35 #include <sys/param.h>
  36 #include <sys/ioctl.h>
  37 #include <sys/socket.h>
  38 #include <net/if.h>
  39 #include <netinet/in.h>
  40 #include <netinet/in_systm.h>
  41 #include <netinet/ip.h>
  42 #include <netinet/ip_icmp.h>
  43 #include <netinet/icmp6.h>
  44 #include <net/pf/pfvar.h>
  45 #include <arpa/inet.h>
  46
  47 #include <stdio.h>
  48 #include <stdlib.h>
  49 #include <string.h>
  50 #include <ctype.h>
  51 #include <netdb.h>
  52 #include <stdarg.h>
  53 #include <errno.h>
  54 #include <err.h>
  55 #include <ifaddrs.h>
  56
  57 #include "pfctl_parser.h"
  58 #include "pfctl.h"
  59
  60 void             print_op (u_int8_t, const char *, const char *);
  61 void             print_port (u_int8_t, u_int16_t, u_int16_t, const char *);
  62 void             print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned);
  63 void             print_flags (u_int8_t);
  64 void             print_fromto(struct pf_rule_addr *, pf_osfp_t,
  65                     struct pf_rule_addr *, u_int8_t, u_int8_t, int);
  66 int              ifa_skip_if(const char *filter, struct node_host *p);
  67
  68 struct node_host        *host_if(const char *, int);
  69 static struct node_host *host_v4(const char *);
  70 struct node_host        *host_v6(const char *, int);
  71 struct node_host        *host_dns(const char *, int, int);
  72
  73 const char *tcpflags = "FSRPAUEW";
  74
  75 static const struct icmptypeent icmp_type[] = {
  76         { "echoreq",    ICMP_ECHO },
  77         { "echorep",    ICMP_ECHOREPLY },
  78         { "unreach",    ICMP_UNREACH },
  79         { "squench",    ICMP_SOURCEQUENCH },
  80         { "redir",      ICMP_REDIRECT },
  81         { "althost",    ICMP_ALTHOSTADDR },
  82         { "routeradv",  ICMP_ROUTERADVERT },
  83         { "routersol",  ICMP_ROUTERSOLICIT },
  84         { "timex",      ICMP_TIMXCEED },
  85         { "paramprob",  ICMP_PARAMPROB },
  86         { "timereq",    ICMP_TSTAMP },
  87         { "timerep",    ICMP_TSTAMPREPLY },
  88         { "inforeq",    ICMP_IREQ },
  89         { "inforep",    ICMP_IREQREPLY },
  90         { "maskreq",    ICMP_MASKREQ },
  91         { "maskrep",    ICMP_MASKREPLY },
  92         { "trace",      ICMP_TRACEROUTE },
  93         { "dataconv",   ICMP_DATACONVERR },
  94         { "mobredir",   ICMP_MOBILE_REDIRECT },
  95         { "ipv6-where", ICMP_IPV6_WHEREAREYOU },
  96         { "ipv6-here",  ICMP_IPV6_IAMHERE },
  97         { "mobregreq",  ICMP_MOBILE_REGREQUEST },
  98         { "mobregrep",  ICMP_MOBILE_REGREPLY },
  99         { "skip",       ICMP_SKIP },
 100         { "photuris",   ICMP_PHOTURIS }
 101 };
 102
 103 static const struct icmptypeent icmp6_type[] = {
 104         { "unreach",    ICMP6_DST_UNREACH },
 105         { "toobig",     ICMP6_PACKET_TOO_BIG },
 106         { "timex",      ICMP6_TIME_EXCEEDED },
 107         { "paramprob",  ICMP6_PARAM_PROB },
 108         { "echoreq",    ICMP6_ECHO_REQUEST },
 109         { "echorep",    ICMP6_ECHO_REPLY },
 110         { "groupqry",   ICMP6_MEMBERSHIP_QUERY },
 111         { "listqry",    MLD_LISTENER_QUERY },
 112         { "grouprep",   ICMP6_MEMBERSHIP_REPORT },
 113         { "listenrep",  MLD_LISTENER_REPORT },
 114         { "groupterm",  ICMP6_MEMBERSHIP_REDUCTION },
 115         { "listendone", MLD_LISTENER_DONE },
 116         { "routersol",  ND_ROUTER_SOLICIT },
 117         { "routeradv",  ND_ROUTER_ADVERT },
 118         { "neighbrsol", ND_NEIGHBOR_SOLICIT },
 119         { "neighbradv", ND_NEIGHBOR_ADVERT },
 120         { "redir",      ND_REDIRECT },
 121         { "routrrenum", ICMP6_ROUTER_RENUMBERING },
 122         { "wrureq",     ICMP6_WRUREQUEST },
 123         { "wrurep",     ICMP6_WRUREPLY },
 124         { "fqdnreq",    ICMP6_FQDN_QUERY },
 125         { "fqdnrep",    ICMP6_FQDN_REPLY },
 126         { "niqry",      ICMP6_NI_QUERY },
 127         { "nirep",      ICMP6_NI_REPLY },
 128         { "mtraceresp", MLD_MTRACE_RESP },
 129         { "mtrace",     MLD_MTRACE }
 130 };
 131
 132 static const struct icmpcodeent icmp_code[] = {
 133         { "net-unr",            ICMP_UNREACH,   ICMP_UNREACH_NET },
 134         { "host-unr",           ICMP_UNREACH,   ICMP_UNREACH_HOST },
 135         { "proto-unr",          ICMP_UNREACH,   ICMP_UNREACH_PROTOCOL },
 136         { "port-unr",           ICMP_UNREACH,   ICMP_UNREACH_PORT },
 137         { "needfrag",           ICMP_UNREACH,   ICMP_UNREACH_NEEDFRAG },
 138         { "srcfail",            ICMP_UNREACH,   ICMP_UNREACH_SRCFAIL },
 139         { "net-unk",            ICMP_UNREACH,   ICMP_UNREACH_NET_UNKNOWN },
 140         { "host-unk",           ICMP_UNREACH,   ICMP_UNREACH_HOST_UNKNOWN },
 141         { "isolate",            ICMP_UNREACH,   ICMP_UNREACH_ISOLATED },
 142         { "net-prohib",         ICMP_UNREACH,   ICMP_UNREACH_NET_PROHIB },
 143         { "host-prohib",        ICMP_UNREACH,   ICMP_UNREACH_HOST_PROHIB },
 144         { "net-tos",            ICMP_UNREACH,   ICMP_UNREACH_TOSNET },
 145         { "host-tos",           ICMP_UNREACH,   ICMP_UNREACH_TOSHOST },
 146         { "filter-prohib",      ICMP_UNREACH,   ICMP_UNREACH_FILTER_PROHIB },
 147         { "host-preced",        ICMP_UNREACH,   ICMP_UNREACH_HOST_PRECEDENCE },
 148         { "cutoff-preced",      ICMP_UNREACH,   ICMP_UNREACH_PRECEDENCE_CUTOFF },
 149         { "redir-net",          ICMP_REDIRECT,  ICMP_REDIRECT_NET },
 150         { "redir-host",         ICMP_REDIRECT,  ICMP_REDIRECT_HOST },
 151         { "redir-tos-net",      ICMP_REDIRECT,  ICMP_REDIRECT_TOSNET },
 152         { "redir-tos-host",     ICMP_REDIRECT,  ICMP_REDIRECT_TOSHOST },
 153         { "normal-adv",         ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL },
 154         { "common-adv",         ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON },
 155         { "transit",            ICMP_TIMXCEED,  ICMP_TIMXCEED_INTRANS },
 156         { "reassemb",           ICMP_TIMXCEED,  ICMP_TIMXCEED_REASS },
 157         { "badhead",            ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR },
 158         { "optmiss",            ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT },
 159         { "badlen",             ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH },
 160         { "unknown-ind",        ICMP_PHOTURIS,  ICMP_PHOTURIS_UNKNOWN_INDEX },
 161         { "auth-fail",          ICMP_PHOTURIS,  ICMP_PHOTURIS_AUTH_FAILED },
 162         { "decrypt-fail",       ICMP_PHOTURIS,  ICMP_PHOTURIS_DECRYPT_FAILED }
 163 };
 164
 165 static const struct icmpcodeent icmp6_code[] = {
 166         { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN },
 167         { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE },
 168         { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR },
 169         { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE },
 170         { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR },
 171         { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT },
 172         { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT },
 173         { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY },
 174         { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER },
 175         { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER },
 176         { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK },
 177         { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER }
 178 };
 179
 180 const struct pf_timeout pf_timeouts[] = {
 181         { "tcp.first",          PFTM_TCP_FIRST_PACKET },
 182         { "tcp.opening",        PFTM_TCP_OPENING },
 183         { "tcp.established",    PFTM_TCP_ESTABLISHED },
 184         { "tcp.closing",        PFTM_TCP_CLOSING },
 185         { "tcp.finwait",        PFTM_TCP_FIN_WAIT },
 186         { "tcp.closed",         PFTM_TCP_CLOSED },
 187         { "udp.first",          PFTM_UDP_FIRST_PACKET },
 188         { "udp.single",         PFTM_UDP_SINGLE },
 189         { "udp.multiple",       PFTM_UDP_MULTIPLE },
 190         { "icmp.first",         PFTM_ICMP_FIRST_PACKET },
 191         { "icmp.error",         PFTM_ICMP_ERROR_REPLY },
 192         { "other.first",        PFTM_OTHER_FIRST_PACKET },
 193         { "other.single",       PFTM_OTHER_SINGLE },
 194         { "other.multiple",     PFTM_OTHER_MULTIPLE },
 195         { "frag",               PFTM_FRAG },
 196         { "interval",           PFTM_INTERVAL },
 197         { "adaptive.start",     PFTM_ADAPTIVE_START },
 198         { "adaptive.end",       PFTM_ADAPTIVE_END },
 199         { "src.track",          PFTM_SRC_NODE },
 200         { NULL,                 0 }
 201 };
 202
 203 const struct icmptypeent *
 204 geticmptypebynumber(u_int8_t type, sa_family_t af)
 205 {
 206         unsigned int    i;
 207
 208         if (af != AF_INET6) {
 209                 for (i=0; i < (sizeof (icmp_type) / sizeof(icmp_type[0]));
 210                     i++) {
 211                         if (type == icmp_type[i].type)
 212                                 return (&icmp_type[i]);
 213                 }
 214         } else {
 215                 for (i=0; i < (sizeof (icmp6_type) /
 216                     sizeof(icmp6_type[0])); i++) {
 217                         if (type == icmp6_type[i].type)
 218                                  return (&icmp6_type[i]);
 219                 }
 220         }
 221         return (NULL);
 222 }
 223
 224 const struct icmptypeent *
 225 geticmptypebyname(char *w, sa_family_t af)
 226 {
 227         unsigned int    i;
 228
 229         if (af != AF_INET6) {
 230                 for (i=0; i < (sizeof (icmp_type) / sizeof(icmp_type[0]));
 231                     i++) {
 232                         if (!strcmp(w, icmp_type[i].name))
 233                                 return (&icmp_type[i]);
 234                 }
 235         } else {
 236                 for (i=0; i < (sizeof (icmp6_type) /
 237                     sizeof(icmp6_type[0])); i++) {
 238                         if (!strcmp(w, icmp6_type[i].name))
 239                                 return (&icmp6_type[i]);
 240                 }
 241         }
 242         return (NULL);
 243 }
 244
 245 const struct icmpcodeent *
 246 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af)
 247 {
 248         unsigned int    i;
 249
 250         if (af != AF_INET6) {
 251                 for (i=0; i < (sizeof (icmp_code) / sizeof(icmp_code[0]));
 252                     i++) {
 253                         if (type == icmp_code[i].type &&
 254                             code == icmp_code[i].code)
 255                                 return (&icmp_code[i]);
 256                 }
 257         } else {
 258                 for (i=0; i < (sizeof (icmp6_code) /
 259                     sizeof(icmp6_code[0])); i++) {
 260                         if (type == icmp6_code[i].type &&
 261                             code == icmp6_code[i].code)
 262                                 return (&icmp6_code[i]);
 263                 }
 264         }
 265         return (NULL);
 266 }
 267
 268 const struct icmpcodeent *
 269 geticmpcodebyname(u_long type, char *w, sa_family_t af)
 270 {
 271         unsigned int    i;
 272
 273         if (af != AF_INET6) {
 274                 for (i=0; i < (sizeof (icmp_code) / sizeof(icmp_code[0]));
 275                     i++) {
 276                         if (type == icmp_code[i].type &&
 277                             !strcmp(w, icmp_code[i].name))
 278                                 return (&icmp_code[i]);
 279                 }
 280         } else {
 281                 for (i=0; i < (sizeof (icmp6_code) /
 282                     sizeof(icmp6_code[0])); i++) {
 283                         if (type == icmp6_code[i].type &&
 284                             !strcmp(w, icmp6_code[i].name))
 285                                 return (&icmp6_code[i]);
 286                 }
 287         }
 288         return (NULL);
 289 }
 290
 291 void
 292 print_op(u_int8_t op, const char *a1, const char *a2)
 293 {
 294         if (op == PF_OP_IRG)
 295                 printf(" %s >< %s", a1, a2);
 296         else if (op == PF_OP_XRG)
 297                 printf(" %s <> %s", a1, a2);
 298         else if (op == PF_OP_EQ)
 299                 printf(" = %s", a1);
 300         else if (op == PF_OP_NE)
 301                 printf(" != %s", a1);
 302         else if (op == PF_OP_LT)
 303                 printf(" < %s", a1);
 304         else if (op == PF_OP_LE)
 305                 printf(" <= %s", a1);
 306         else if (op == PF_OP_GT)
 307                 printf(" > %s", a1);
 308         else if (op == PF_OP_GE)
 309                 printf(" >= %s", a1);
 310         else if (op == PF_OP_RRG)
 311                 printf(" %s:%s", a1, a2);
 312 }
 313
 314 void
 315 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto)
 316 {
 317         char             a1[6], a2[6];
 318         struct servent  *s;
 319
 320         s = getservbyport(p1, proto);
 321         p1 = ntohs(p1);
 322         p2 = ntohs(p2);
 323         snprintf(a1, sizeof(a1), "%u", p1);
 324         snprintf(a2, sizeof(a2), "%u", p2);
 325         printf(" port");
 326         if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE))
 327                 print_op(op, s->s_name, a2);
 328         else
 329                 print_op(op, a1, a2);
 330 }
 331
 332 void
 333 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax)
 334 {
 335         char    a1[11], a2[11];
 336
 337         snprintf(a1, sizeof(a1), "%u", u1);
 338         snprintf(a2, sizeof(a2), "%u", u2);
 339         printf(" %s", t);
 340         if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE))
 341                 print_op(op, "unknown", a2);
 342         else
 343                 print_op(op, a1, a2);
 344 }
 345
 346 void
 347 print_flags(u_int8_t f)
 348 {
 349         int     i;
 350
 351         for (i = 0; tcpflags[i]; ++i)
 352                 if (f & (1 << i))
 353                         printf("%c", tcpflags[i]);
 354 }
 355
 356 void
 357 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst,
 358     sa_family_t af, u_int8_t proto, int verbose)
 359 {
 360         char buf[PF_OSFP_LEN*3];
 361         if (src->addr.type == PF_ADDR_ADDRMASK &&
 362             dst->addr.type == PF_ADDR_ADDRMASK &&
 363             PF_AZERO(&src->addr.v.a.addr, AF_INET6) &&
 364             PF_AZERO(&src->addr.v.a.mask, AF_INET6) &&
 365             PF_AZERO(&dst->addr.v.a.addr, AF_INET6) &&
 366             PF_AZERO(&dst->addr.v.a.mask, AF_INET6) &&
 367             !src->not && !dst->not &&
 368             !src->port_op && !dst->port_op &&
 369             osfp == PF_OSFP_ANY)
 370                 printf(" all");
 371         else {
 372                 printf(" from ");
 373                 if (src->not)
 374                         printf("! ");
 375                 print_addr(&src->addr, af, verbose);
 376                 if (src->port_op)
 377                         print_port(src->port_op, src->port[0],
 378                             src->port[1],
 379                             proto == IPPROTO_TCP ? "tcp" : "udp");
 380                 if (osfp != PF_OSFP_ANY)
 381                         printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf,
 382                             sizeof(buf)));
 383
 384                 printf(" to ");
 385                 if (dst->not)
 386                         printf("! ");
 387                 print_addr(&dst->addr, af, verbose);
 388                 if (dst->port_op)
 389                         print_port(dst->port_op, dst->port[0],
 390                             dst->port[1],
 391                             proto == IPPROTO_TCP ? "tcp" : "udp");
 392         }
 393 }
 394
 395 void
 396 print_pool(struct pf_pool *pool, u_int16_t p1, u_int16_t p2,
 397     sa_family_t af, int id)
 398 {
 399         struct pf_pooladdr      *pooladdr;
 400
 401         if ((TAILQ_FIRST(&pool->list) != NULL) &&
 402             TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
 403                 printf("{ ");
 404         TAILQ_FOREACH(pooladdr, &pool->list, entries){
 405                 switch (id) {
 406                 case PF_NAT:
 407                 case PF_RDR:
 408                 case PF_BINAT:
 409                         print_addr(&pooladdr->addr, af, 0);
 410                         break;
 411                 case PF_PASS:
 412                         if (PF_AZERO(&pooladdr->addr.v.a.addr, af))
 413                                 printf("%s", pooladdr->ifname);
 414                         else {
 415                                 printf("(%s ", pooladdr->ifname);
 416                                 print_addr(&pooladdr->addr, af, 0);
 417                                 printf(")");
 418                         }
 419                         break;
 420                 default:
 421                         break;
 422                 }
 423                 if (TAILQ_NEXT(pooladdr, entries) != NULL)
 424                         printf(", ");
 425                 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
 426                         printf(" }");
 427         }
 428         switch (id) {
 429         case PF_NAT:
 430                 if ((p1 != PF_NAT_PROXY_PORT_LOW ||
 431                     p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) {
 432                         if (p1 == p2)
 433                                 printf(" port %u", p1);
 434                         else
 435                                 printf(" port %u:%u", p1, p2);
 436                 }
 437                 break;
 438         case PF_RDR:
 439                 if (p1) {
 440                         printf(" port %u", p1);
 441                         if (p2 && (p2 != p1))
 442                                 printf(":%u", p2);
 443                 }
 444                 break;
 445         default:
 446                 break;
 447         }
 448         switch (pool->opts & PF_POOL_TYPEMASK) {
 449         case PF_POOL_NONE:
 450                 break;
 451         case PF_POOL_BITMASK:
 452                 printf(" bitmask");
 453                 break;
 454         case PF_POOL_RANDOM:
 455                 printf(" random");
 456                 break;
 457         case PF_POOL_SRCHASH:
 458                 printf(" source-hash 0x%08x%08x%08x%08x",
 459                     pool->key.key32[0], pool->key.key32[1],
 460                     pool->key.key32[2], pool->key.key32[3]);
 461                 break;
 462         case PF_POOL_ROUNDROBIN:
 463                 printf(" round-robin");
 464                 break;
 465         }
 466         if (pool->opts & PF_POOL_STICKYADDR)
 467                 printf(" sticky-address");
 468         if (id == PF_NAT && p1 == 0 && p2 == 0)
 469                 printf(" static-port");
 470 }
 471
 472 const char      *pf_reasons[PFRES_MAX+1] = PFRES_NAMES;
 473 const char      *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES;
 474 const char      *pf_scounters[FCNT_MAX+1] = FCNT_NAMES;
 475
 476 void
 477 print_status(struct pf_status *s, int opts)
 478 {
 479         char    statline[80];
 480         const char *running;
 481         time_t  runtime;
 482         int     i;
 483
 484         runtime = time(NULL) - s->since;
 485         running = s->running ? "Enabled" : "Disabled";
 486
 487         if (s->since) {
 488                 unsigned        sec, min, hrs, day = runtime;
 489
 490                 sec = day % 60;
 491                 day /= 60;
 492                 min = day % 60;
 493                 day /= 60;
 494                 hrs = day % 24;
 495                 day /= 24;
 496                 snprintf(statline, sizeof(statline),
 497                     "Status: %s for %u days %.2u:%.2u:%.2u",
 498                     running, day, hrs, min, sec);
 499         } else
 500                 snprintf(statline, sizeof(statline), "Status: %s", running);
 501         printf("%-44s", statline);
 502         switch (s->debug) {
 503         case PF_DEBUG_NONE:
 504                 printf("%15s\n\n", "Debug: None");
 505                 break;
 506         case PF_DEBUG_URGENT:
 507                 printf("%15s\n\n", "Debug: Urgent");
 508                 break;
 509         case PF_DEBUG_MISC:
 510                 printf("%15s\n\n", "Debug: Misc");
 511                 break;
 512         case PF_DEBUG_NOISY:
 513                 printf("%15s\n\n", "Debug: Loud");
 514                 break;
 515         }
 516         printf("Hostid: 0x%08x\n\n", ntohl(s->hostid));
 517         if (s->ifname[0] != 0) {
 518                 printf("Interface Stats for %-16s %5s %16s\n",
 519                     s->ifname, "IPv4", "IPv6");
 520                 printf("  %-25s %14llu %16llu\n", "Bytes In",
 521                     (unsigned long long)s->bcounters[0][0],
 522                     (unsigned long long)s->bcounters[1][0]);
 523                 printf("  %-25s %14llu %16llu\n", "Bytes Out",
 524                     (unsigned long long)s->bcounters[0][1],
 525                     (unsigned long long)s->bcounters[1][1]);
 526                 printf("  Packets In\n");
 527                 printf("    %-23s %14llu %16llu\n", "Passed",
 528                     (unsigned long long)s->pcounters[0][0][PF_PASS],
 529                     (unsigned long long)s->pcounters[1][0][PF_PASS]);
 530                 printf("    %-23s %14llu %16llu\n", "Blocked",
 531                     (unsigned long long)s->pcounters[0][0][PF_DROP],
 532                     (unsigned long long)s->pcounters[1][0][PF_DROP]);
 533                 printf("  Packets Out\n");
 534                 printf("    %-23s %14llu %16llu\n", "Passed",
 535                     (unsigned long long)s->pcounters[0][1][PF_PASS],
 536                     (unsigned long long)s->pcounters[1][1][PF_PASS]);
 537                 printf("    %-23s %14llu %16llu\n\n", "Blocked",
 538                     (unsigned long long)s->pcounters[0][1][PF_DROP],
 539                     (unsigned long long)s->pcounters[1][1][PF_DROP]);
 540         }
 541         printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
 542         printf("  %-25s %14u %14s\n", "current entries", s->states, "");
 543         for (i = 0; i < FCNT_MAX; i++) {
 544                 printf("  %-25s %14llu ", pf_fcounters[i],
 545                             (unsigned long long)s->fcounters[i]);
 546                 if (runtime > 0)
 547                         printf("%14.1f/s\n",
 548                             (double)s->fcounters[i] / (double)runtime);
 549                 else
 550                         printf("%14s\n", "");
 551         }
 552         if (opts & PF_OPT_VERBOSE) {
 553                 printf("Source Tracking Table\n");
 554                 printf("  %-25s %14u %14s\n", "current entries",
 555                     s->src_nodes, "");
 556                 for (i = 0; i < SCNT_MAX; i++) {
 557                         printf("  %-25s %14lld ", pf_scounters[i],
 558                                     s->scounters[i]);
 559                         if (runtime > 0)
 560                                 printf("%14.1f/s\n",
 561                                     (double)s->scounters[i] / (double)runtime);
 562                         else
 563                                 printf("%14s\n", "");
 564                 }
 565         }
 566         printf("Counters\n");
 567         for (i = 0; i < PFRES_MAX; i++) {
 568                 printf("  %-25s %14llu ", pf_reasons[i],
 569                     (unsigned long long)s->counters[i]);
 570                 if (runtime > 0)
 571                         printf("%14.1f/s\n",
 572                             (double)s->counters[i] / (double)runtime);
 573                 else
 574                         printf("%14s\n", "");
 575         }
 576 }
 577
 578 void
 579 print_src_node(struct pf_src_node *sn, int opts)
 580 {
 581         struct pf_addr_wrap aw;
 582         int min, sec;
 583
 584         memset(&aw, 0, sizeof(aw));
 585         if (sn->af == AF_INET)
 586                 aw.v.a.mask.addr32[0] = 0xffffffff;
 587         else
 588                 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
 589
 590         aw.v.a.addr = sn->addr;
 591         print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
 592         printf(" -> ");
 593         aw.v.a.addr = sn->raddr;
 594         print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
 595         printf(" (%d states)\n", sn->states);
 596         if (opts & PF_OPT_VERBOSE) {
 597                 sec = sn->creation % 60;
 598                 sn->creation /= 60;
 599                 min = sn->creation % 60;
 600                 sn->creation /= 60;
 601                 printf("   age %.2u:%.2u:%.2u", sn->creation, min, sec);
 602                 if (sn->states == 0) {
 603                         sec = sn->expire % 60;
 604                         sn->expire /= 60;
 605                         min = sn->expire % 60;
 606                         sn->expire /= 60;
 607                         printf(", expires in %.2u:%.2u:%.2u",
 608                             sn->expire, min, sec);
 609                 }
 610                 printf(", %u pkts, %u bytes", sn->packets, sn->bytes);
 611                 switch (sn->ruletype) {
 612                 case PF_NAT:
 613                         if (sn->rule.nr != (uint32_t)(-1))
 614                                 printf(", nat rule %u", sn->rule.nr);
 615                         break;
 616                 case PF_RDR:
 617                         if (sn->rule.nr != (uint32_t)(-1))
 618                                 printf(", rdr rule %u", sn->rule.nr);
 619                         break;
 620                 case PF_PASS:
 621                         if (sn->rule.nr != (uint32_t)(-1))
 622                                 printf(", filter rule %u", sn->rule.nr);
 623                         break;
 624                 }
 625                 printf("\n");
 626         }
 627 }
 628
 629 void
 630 print_rule(struct pf_rule *r, int verbose)
 631 {
 632         static const char *actiontypes[] = { "pass", "block", "scrub", "nat",
 633             "no nat", "binat", "no binat", "rdr", "no rdr" };
 634         static const char *anchortypes[] = { "anchor", "anchor", "anchor",
 635             "nat-anchor", "nat-anchor", "binat-anchor", "binat-anchor",
 636             "rdr-anchor", "rdr-anchor" };
 637         int     i, opts;
 638
 639         if (verbose)
 640                 printf("@%d ", r->nr);
 641         if (r->action > PF_NORDR)
 642                 printf("action(%d)", r->action);
 643         else if (r->anchorname[0])
 644                 printf("%s %s", anchortypes[r->action], r->anchorname);
 645         else {
 646                 printf("%s", actiontypes[r->action]);
 647                 if (r->natpass)
 648                         printf(" pass");
 649         }
 650         if (r->action == PF_DROP) {
 651                 if (r->rule_flag & PFRULE_RETURN)
 652                         printf(" return");
 653                 else if (r->rule_flag & PFRULE_RETURNRST) {
 654                         if (!r->return_ttl)
 655                                 printf(" return-rst");
 656                         else
 657                                 printf(" return-rst(ttl %d)", r->return_ttl);
 658                 } else if (r->rule_flag & PFRULE_RETURNICMP) {
 659                         const struct icmpcodeent        *ic, *ic6;
 660
 661                         ic = geticmpcodebynumber(r->return_icmp >> 8,
 662                             r->return_icmp & 255, AF_INET);
 663                         ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
 664                             r->return_icmp6 & 255, AF_INET6);
 665
 666                         switch (r->af) {
 667                         case AF_INET:
 668                                 printf(" return-icmp");
 669                                 if (ic == NULL)
 670                                         printf("(%u)", r->return_icmp & 255);
 671                                 else
 672                                         printf("(%s)", ic->name);
 673                                 break;
 674                         case AF_INET6:
 675                                 printf(" return-icmp6");
 676                                 if (ic6 == NULL)
 677                                         printf("(%u)", r->return_icmp6 & 255);
 678                                 else
 679                                         printf("(%s)", ic6->name);
 680                                 break;
 681                         default:
 682                                 printf(" return-icmp");
 683                                 if (ic == NULL)
 684                                         printf("(%u, ", r->return_icmp & 255);
 685                                 else
 686                                         printf("(%s, ", ic->name);
 687                                 if (ic6 == NULL)
 688                                         printf("%u)", r->return_icmp6 & 255);
 689                                 else
 690                                         printf("%s)", ic6->name);
 691                                 break;
 692                         }
 693                 } else
 694                         printf(" drop");
 695         }
 696         if (r->direction == PF_IN)
 697                 printf(" in");
 698         else if (r->direction == PF_OUT)
 699                 printf(" out");
 700         if (r->log == 1)
 701                 printf(" log");
 702         else if (r->log == 2)
 703                 printf(" log-all");
 704         if (r->quick)
 705                 printf(" quick");
 706         if (r->ifname[0]) {
 707                 if (r->ifnot)
 708                         printf(" on ! %s", r->ifname);
 709                 else
 710                         printf(" on %s", r->ifname);
 711         }
 712         if (r->rt) {
 713                 if (r->rt == PF_ROUTETO)
 714                         printf(" route-to");
 715                 else if (r->rt == PF_REPLYTO)
 716                         printf(" reply-to");
 717                 else if (r->rt == PF_DUPTO)
 718                         printf(" dup-to");
 719                 else if (r->rt == PF_FASTROUTE)
 720                         printf(" fastroute");
 721                 if (r->rt != PF_FASTROUTE) {
 722                         printf(" ");
 723                         print_pool(&r->rpool, 0, 0, r->af, PF_PASS);
 724                 }
 725         }
 726         if (r->af) {
 727                 if (r->af == AF_INET)
 728                         printf(" inet");
 729                 else
 730                         printf(" inet6");
 731         }
 732         if (r->proto) {
 733                 struct protoent *p;
 734
 735                 if ((p = getprotobynumber(r->proto)) != NULL)
 736                         printf(" proto %s", p->p_name);
 737                 else
 738                         printf(" proto %u", r->proto);
 739         }
 740         print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto,
 741             verbose);
 742         if (r->uid.op)
 743                 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user",
 744                     UID_MAX);
 745         if (r->gid.op)
 746                 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group",
 747                     GID_MAX);
 748         if (r->flags || r->flagset) {
 749                 printf(" flags ");
 750                 print_flags(r->flags);
 751                 printf("/");
 752                 print_flags(r->flagset);
 753         }
 754         if (r->type) {
 755                 const struct icmptypeent        *it;
 756
 757                 it = geticmptypebynumber(r->type-1, r->af);
 758                 if (r->af != AF_INET6)
 759                         printf(" icmp-type");
 760                 else
 761                         printf(" icmp6-type");
 762                 if (it != NULL)
 763                         printf(" %s", it->name);
 764                 else
 765                         printf(" %u", r->type-1);
 766                 if (r->code) {
 767                         const struct icmpcodeent        *ic;
 768
 769                         ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
 770                         if (ic != NULL)
 771                                 printf(" code %s", ic->name);
 772                         else
 773                                 printf(" code %u", r->code-1);
 774                 }
 775         }
 776         if (r->tos)
 777                 printf(" tos 0x%2.2x", r->tos);
 778         if (r->keep_state == PF_STATE_NORMAL)
 779                 printf(" keep state");
 780         else if (r->keep_state == PF_STATE_MODULATE)
 781                 printf(" modulate state");
 782         else if (r->keep_state == PF_STATE_SYNPROXY)
 783                 printf(" synproxy state");
 784         if (r->prob) {
 785                 char    buf[20];
 786
 787                 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
 788                 for (i = strlen(buf)-1; i > 0; i--) {
 789                         if (buf[i] == '0')
 790                                 buf[i] = '\0';
 791                         else {
 792                                 if (buf[i] == '.')
 793                                         buf[i] = '\0';
 794                                 break;
 795                         }
 796                 }
 797                 printf(" probability %s%%", buf);
 798         }
 799         opts = 0;
 800         if (r->max_states || r->max_src_nodes || r->max_src_states)
 801                 opts = 1;
 802         if (r->rule_flag & PFRULE_NOSYNC)
 803                 opts = 1;
 804         if (r->rule_flag & PFRULE_SRCTRACK)
 805                 opts = 1;
 806         if (r->rule_flag & (PFRULE_IFBOUND | PFRULE_GRBOUND))
 807                 opts = 1;
 808         for (i = 0; !opts && i < PFTM_MAX; ++i)
 809                 if (r->timeout[i])
 810                         opts = 1;
 811         if (opts) {
 812                 printf(" (");
 813                 if (r->max_states) {
 814                         printf("max %u", r->max_states);
 815                         opts = 0;
 816                 }
 817                 if (r->rule_flag & PFRULE_NOSYNC) {
 818                         if (!opts)
 819                                 printf(", ");
 820                         printf("no-sync");
 821                         opts = 0;
 822                 }
 823                 if (r->rule_flag & PFRULE_SRCTRACK) {
 824                         if (!opts)
 825                                 printf(", ");
 826                         printf("source-track");
 827                         if (r->rule_flag & PFRULE_RULESRCTRACK)
 828                                 printf(" rule");
 829                         else
 830                                 printf(" global");
 831                         opts = 0;
 832                 }
 833                 if (r->max_src_states) {
 834                         if (!opts)
 835                                 printf(", ");
 836                         printf("max-src-states %u", r->max_src_states);
 837                         opts = 0;
 838                 }
 839                 if (r->max_src_nodes) {
 840                         if (!opts)
 841                                 printf(", ");
 842                         printf("max-src-nodes %u", r->max_src_nodes);
 843                         opts = 0;
 844                 }
 845                 if (r->rule_flag & PFRULE_IFBOUND) {
 846                         if (!opts)
 847                                 printf(", ");
 848                         printf("if-bound");
 849                         opts = 0;
 850                 }
 851                 if (r->rule_flag & PFRULE_GRBOUND) {
 852                         if (!opts)
 853                                 printf(", ");
 854                         printf("group-bound");
 855                         opts = 0;
 856                 }
 857                 for (i = 0; i < PFTM_MAX; ++i)
 858                         if (r->timeout[i]) {
 859                                 if (!opts)
 860                                         printf(", ");
 861                                 opts = 0;
 862                                 printf("%s %u", pf_timeouts[i].name,
 863                                     r->timeout[i]);
 864                         }
 865                 printf(")");
 866         }
 867         if (r->rule_flag & PFRULE_FRAGMENT)
 868                 printf(" fragment");
 869         if (r->rule_flag & PFRULE_NODF)
 870                 printf(" no-df");
 871         if (r->rule_flag & PFRULE_RANDOMID)
 872                 printf(" random-id");
 873         if (r->min_ttl)
 874                 printf(" min-ttl %d", r->min_ttl);
 875         if (r->max_mss)
 876                 printf(" max-mss %d", r->max_mss);
 877         if (r->allow_opts)
 878                 printf(" allow-opts");
 879         if (r->action == PF_SCRUB) {
 880                 if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
 881                         printf(" reassemble tcp");
 882
 883                 if (r->rule_flag & PFRULE_FRAGDROP)
 884                         printf(" fragment drop-ovl");
 885                 else if (r->rule_flag & PFRULE_FRAGCROP)
 886                         printf(" fragment crop");
 887                 else
 888                         printf(" fragment reassemble");
 889         }
 890         if (r->label[0])
 891                 printf(" label \"%s\"", r->label);
 892         if (r->qname[0] && r->pqname[0])
 893                 printf(" queue(%s, %s)", r->qname, r->pqname);
 894         else if (r->qname[0])
 895                 printf(" queue %s", r->qname);
 896         if (r->tagname[0])
 897                 printf(" tag %s", r->tagname);
 898         if (r->match_tagname[0]) {
 899                 if (r->match_tag_not)
 900                         printf(" !");
 901                 printf(" tagged %s", r->match_tagname);
 902         }
 903         if (!r->anchorname[0] && (r->action == PF_NAT ||
 904             r->action == PF_BINAT || r->action == PF_RDR)) {
 905                 printf(" -> ");
 906                 print_pool(&r->rpool, r->rpool.proxy_port[0],
 907                     r->rpool.proxy_port[1], r->af, r->action);
 908         }
 909         printf("\n");
 910 }
 911
 912 void
 913 print_tabledef(const char *name, int flags, int addrs,
 914     struct node_tinithead *nodes)
 915 {
 916         struct node_tinit       *ti, *nti;
 917         struct node_host        *h;
 918
 919         printf("table <%s>", name);
 920         if (flags & PFR_TFLAG_CONST)
 921                 printf(" const");
 922         if (flags & PFR_TFLAG_PERSIST)
 923                 printf(" persist");
 924         SIMPLEQ_FOREACH(ti, nodes, entries) {
 925                 if (ti->file) {
 926                         printf(" file \"%s\"", ti->file);
 927                         continue;
 928                 }
 929                 printf(" {");
 930                 for (;;) {
 931                         for (h = ti->host; h != NULL; h = h->next) {
 932                                 printf(h->not ? " !" : " ");
 933                                 print_addr(&h->addr, h->af, 0);
 934                         }
 935                         nti = SIMPLEQ_NEXT(ti, entries);
 936                         if (nti != NULL && nti->file == NULL)
 937                                 ti = nti;       /* merge lists */
 938                         else
 939                                 break;
 940                 }
 941                 printf(" }");
 942         }
 943         if (addrs && SIMPLEQ_EMPTY(nodes))
 944                 printf(" { }");
 945         printf("\n");
 946 }
 947
 948 int
 949 parse_flags(char *s)
 950 {
 951         char            *p, *q;
 952         u_int8_t         f = 0;
 953
 954         for (p = s; *p; p++) {
 955                 if ((q = strchr(tcpflags, *p)) == NULL)
 956                         return -1;
 957                 else
 958                         f |= 1 << (q - tcpflags);
 959         }
 960         return (f ? f : PF_TH_ALL);
 961 }
 962
 963 void
 964 set_ipmask(struct node_host *h, u_int8_t b)
 965 {
 966         struct pf_addr  *m, *n;
 967         int              i, j = 0;
 968
 969         m = &h->addr.v.a.mask;
 970
 971         for (i = 0; i < 4; i++)
 972                 m->addr32[i] = 0;
 973
 974         while (b >= 32) {
 975                 m->addr32[j++] = 0xffffffff;
 976                 b -= 32;
 977         }
 978         for (i = 31; i > 31-b; --i)
 979                 m->addr32[j] |= (1 << i);
 980         if (b)
 981                 m->addr32[j] = htonl(m->addr32[j]);
 982
 983         /* Mask off bits of the address that will never be used. */
 984         n = &h->addr.v.a.addr;
 985         if (h->addr.type == PF_ADDR_ADDRMASK)
 986                 for (i = 0; i < 4; i++)
 987                         n->addr32[i] = n->addr32[i] & m->addr32[i];
 988 }
 989
 990 int
 991 check_netmask(struct node_host *h, sa_family_t af)
 992 {
 993         struct node_host        *n = NULL;
 994         struct pf_addr  *m;
 995
 996         for (n = h; n != NULL; n = n->next) {
 997                 if (h->addr.type == PF_ADDR_TABLE)
 998                         continue;
 999                 m = &h->addr.v.a.mask;
1000                 /* fix up netmask for dynaddr */
1001                 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL &&
1002                     unmask(m, AF_INET6) > 32)
1003                         set_ipmask(n, 32);
1004                 /* netmasks > 32 bit are invalid on v4 */
1005                 if (af == AF_INET &&
1006                     (m->addr32[1] || m->addr32[2] || m->addr32[3])) {
1007                         fprintf(stderr, "netmask %u invalid for IPv4 address\n",
1008                             unmask(m, AF_INET6));
1009                         return (1);
1010                 }
1011         }
1012         return (0);
1013 }
1014
1015 /* interface lookup routines */
1016
1017 struct node_host        *iftab;
1018
1019 void
1020 ifa_load(void)
1021 {
1022         struct ifaddrs          *ifap, *ifa;
1023         struct node_host        *n = NULL, *h = NULL;
1024         struct pfr_buffer        b;
1025         const struct pfi_if     *p;
1026
1027         if (getifaddrs(&ifap) < 0)
1028                 err(1, "getifaddrs");
1029
1030         for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1031                 if (!(ifa->ifa_addr->sa_family == AF_INET ||
1032                     ifa->ifa_addr->sa_family == AF_INET6 ||
1033                     ifa->ifa_addr->sa_family == AF_LINK))
1034                                 continue;
1035                 n = calloc(1, sizeof(struct node_host));
1036                 if (n == NULL)
1037                         err(1, "address: calloc");
1038                 n->af = ifa->ifa_addr->sa_family;
1039                 n->ifa_flags = ifa->ifa_flags;
1040 #ifdef __KAME__
1041                 if (n->af == AF_INET6 &&
1042                     IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
1043                     ifa->ifa_addr)->sin6_addr) &&
1044                     ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
1045                     0) {
1046                         struct sockaddr_in6     *sin6;
1047
1048                         sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1049                         sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
1050                             sin6->sin6_addr.s6_addr[3];
1051                         sin6->sin6_addr.s6_addr[2] = 0;
1052                         sin6->sin6_addr.s6_addr[3] = 0;
1053                 }
1054 #endif
1055                 n->ifindex = 0;
1056                 if (n->af == AF_INET) {
1057                         memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *)
1058                             ifa->ifa_addr)->sin_addr.s_addr,
1059                             sizeof(struct in_addr));
1060                         memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *)
1061                             ifa->ifa_netmask)->sin_addr.s_addr,
1062                             sizeof(struct in_addr));
1063                         if (ifa->ifa_broadaddr != NULL)
1064                                 memcpy(&n->bcast, &((struct sockaddr_in *)
1065                                     ifa->ifa_broadaddr)->sin_addr.s_addr,
1066                                     sizeof(struct in_addr));
1067                         if (ifa->ifa_dstaddr != NULL)
1068                                 memcpy(&n->peer, &((struct sockaddr_in *)
1069                                     ifa->ifa_dstaddr)->sin_addr.s_addr,
1070                                     sizeof(struct in_addr));
1071                 } else if (n->af == AF_INET6) {
1072                         memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *)
1073                             ifa->ifa_addr)->sin6_addr.s6_addr,
1074                             sizeof(struct in6_addr));
1075                         memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *)
1076                             ifa->ifa_netmask)->sin6_addr.s6_addr,
1077                             sizeof(struct in6_addr));
1078                         if (ifa->ifa_broadaddr != NULL)
1079                                 memcpy(&n->bcast, &((struct sockaddr_in6 *)
1080                                     ifa->ifa_broadaddr)->sin6_addr.s6_addr,
1081                                     sizeof(struct in6_addr));
1082                         if (ifa->ifa_dstaddr != NULL)
1083                                  memcpy(&n->peer, &((struct sockaddr_in6 *)
1084                                     ifa->ifa_dstaddr)->sin6_addr.s6_addr,
1085                                     sizeof(struct in6_addr));
1086                         n->ifindex = ((struct sockaddr_in6 *)
1087                             ifa->ifa_addr)->sin6_scope_id;
1088                 }
1089                 if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
1090                         err(1, "ifa_load: strdup");
1091                 n->next = NULL;
1092                 n->tail = n;
1093                 if (h == NULL)
1094                         h = n;
1095                 else {
1096                         h->tail->next = n;
1097                         h->tail = n;
1098                 }
1099         }
1100
1101         /* add interface groups, including clonable and dynamic stuff */
1102         bzero(&b, sizeof(b));
1103         b.pfrb_type = PFRB_IFACES;
1104         for (;;) {
1105                 if (pfr_buf_grow(&b, b.pfrb_size))
1106                         err(1, "ifa_load: pfr_buf_grow");
1107                 b.pfrb_size = b.pfrb_msize;
1108                 if (pfi_get_ifaces(NULL, b.pfrb_caddr, &b.pfrb_size,
1109                     PFI_FLAG_GROUP))
1110                         err(1, "ifa_load: pfi_get_ifaces");
1111                 if (b.pfrb_size <= b.pfrb_msize)
1112                         break;
1113         }
1114         PFRB_FOREACH(p, &b) {
1115                 n = calloc(1, sizeof(struct node_host));
1116                 if (n == NULL)
1117                         err(1, "address: calloc");
1118                 n->af = AF_LINK;
1119                 n->ifa_flags = PF_IFA_FLAG_GROUP;
1120                 if (p->pfif_flags & PFI_IFLAG_DYNAMIC)
1121                         n->ifa_flags |= PF_IFA_FLAG_DYNAMIC;
1122                 if (p->pfif_flags & PFI_IFLAG_CLONABLE)
1123                         n->ifa_flags |= PF_IFA_FLAG_CLONABLE;
1124                 if (!strcmp(p->pfif_name, "lo"))
1125                         n->ifa_flags |= IFF_LOOPBACK;
1126                 if ((n->ifname = strdup(p->pfif_name)) == NULL)
1127                         err(1, "ifa_load: strdup");
1128                 n->next = NULL;
1129                 n->tail = n;
1130                 if (h == NULL)
1131                         h = n;
1132                 else {
1133                         h->tail->next = n;
1134                         h->tail = n;
1135                 }
1136         }
1137
1138         iftab = h;
1139         freeifaddrs(ifap);
1140 }
1141
1142 struct node_host *
1143 ifa_exists(const char *ifa_name, int group_ok)
1144 {
1145         struct node_host        *n;
1146         char                    *p, buf[IFNAMSIZ];
1147         int                      group;
1148
1149         group = !isdigit(ifa_name[strlen(ifa_name) - 1]);
1150         if (group && !group_ok)
1151                 return (NULL);
1152         if (iftab == NULL)
1153                 ifa_load();
1154
1155         for (n = iftab; n; n = n->next) {
1156                 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
1157                         return (n);
1158         }
1159         if (!group) {
1160                 /* look for clonable and/or dynamic interface */
1161                 strlcpy(buf, ifa_name, sizeof(buf));
1162                 for (p = buf + strlen(buf) - 1; p > buf && isdigit(*p); p--)
1163                         *p = '\0';
1164                 for (n = iftab; n != NULL; n = n->next)
1165                         if (n->af == AF_LINK &&
1166                             !strncmp(n->ifname, buf, IFNAMSIZ))
1167                                 break;
1168                 if (n != NULL && n->ifa_flags &
1169                     (PF_IFA_FLAG_DYNAMIC | PF_IFA_FLAG_CLONABLE))
1170                         return (n);     /* XXX */
1171         }
1172         return (NULL);
1173 }
1174
1175 struct node_host *
1176 ifa_lookup(const char *ifa_name, int flags)
1177 {
1178         struct node_host        *p = NULL, *h = NULL, *n = NULL;
1179         int                      got4 = 0, got6 = 0;
1180         const char               *last_if = NULL;
1181
1182         if (!strncmp(ifa_name, "self", IFNAMSIZ))
1183                 ifa_name = NULL;
1184
1185         if (iftab == NULL)
1186                 ifa_load();
1187
1188         for (p = iftab; p; p = p->next) {
1189                 if (ifa_skip_if(ifa_name, p))
1190                         continue;
1191                 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
1192                         continue;
1193                 if ((flags & PFI_AFLAG_BROADCAST) &&
1194                     !(p->ifa_flags & IFF_BROADCAST))
1195                         continue;
1196                 if ((flags & PFI_AFLAG_PEER) &&
1197                     !(p->ifa_flags & IFF_POINTOPOINT))
1198                         continue;
1199                 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
1200                         continue;
1201                 if (last_if == NULL || strcmp(last_if, p->ifname))
1202                         got4 = got6 = 0;
1203                 last_if = p->ifname;
1204                 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
1205                         continue;
1206                 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
1207                         continue;
1208                 if (p->af == AF_INET)
1209                         got4 = 1;
1210                 else
1211                         got6 = 1;
1212                 n = calloc(1, sizeof(struct node_host));
1213                 if (n == NULL)
1214                         err(1, "address: calloc");
1215                 n->af = p->af;
1216                 if (flags & PFI_AFLAG_BROADCAST)
1217                         memcpy(&n->addr.v.a.addr, &p->bcast,
1218                             sizeof(struct pf_addr));
1219                 else if (flags & PFI_AFLAG_PEER)
1220                         memcpy(&n->addr.v.a.addr, &p->peer,
1221                             sizeof(struct pf_addr));
1222                 else
1223                         memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
1224                             sizeof(struct pf_addr));
1225                 if (flags & PFI_AFLAG_NETWORK)
1226                         set_ipmask(n, unmask(&p->addr.v.a.mask, n->af));
1227                 else {
1228                         if (n->af == AF_INET) {
1229                                 if (p->ifa_flags & IFF_LOOPBACK &&
1230                                     p->ifa_flags & IFF_LINK1)
1231                                         memcpy(&n->addr.v.a.mask,
1232                                             &p->addr.v.a.mask,
1233                                             sizeof(struct pf_addr));
1234                                 else
1235                                         set_ipmask(n, 32);
1236                         } else
1237                                 set_ipmask(n, 128);
1238                 }
1239                 n->ifindex = p->ifindex;
1240
1241                 n->next = NULL;
1242                 n->tail = n;
1243                 if (h == NULL)
1244                         h = n;
1245                 else {
1246                         h->tail->next = n;
1247                         h->tail = n;
1248                 }
1249         }
1250         return (h);
1251 }
1252
1253 int
1254 ifa_skip_if(const char *filter, struct node_host *p)
1255 {
1256         int     n;
1257
1258         if (p->af != AF_INET && p->af != AF_INET6)
1259                 return (1);
1260         if (filter == NULL || !*filter)
1261                 return (0);
1262         if (!strcmp(p->ifname, filter))
1263                 return (0);     /* exact match */
1264         n = strlen(filter);
1265         if (n < 1 || n >= IFNAMSIZ)
1266                 return (1);     /* sanity check */
1267         if (filter[n-1] >= '0' && filter[n-1] <= '9')
1268                 return (1);     /* only do exact match in that case */
1269         if (strncmp(p->ifname, filter, n))
1270                 return (1);     /* prefix doesn't match */
1271         return (p->ifname[n] < '0' || p->ifname[n] > '9');
1272 }
1273
1274
1275 struct node_host *
1276 host(const char *s)
1277 {
1278         struct node_host        *h = NULL;
1279         int                      mask, v4mask, v6mask, cont = 1;
1280         char                    *p, *q, *ps;
1281
1282         if ((p = strrchr(s, '/')) != NULL) {
1283                 mask = strtol(p+1, &q, 0);
1284                 if (!q || *q || mask > 128 || q == (p+1)) {
1285                         fprintf(stderr, "invalid netmask\n");
1286                         return (NULL);
1287                 }
1288                 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
1289                         err(1, "host: malloc");
1290                 strlcpy(ps, s, strlen(s) - strlen(p) + 1);
1291                 v4mask = v6mask = mask;
1292         } else {
1293                 if ((ps = strdup(s)) == NULL)
1294                         err(1, "host: strdup");
1295                 v4mask = 32;
1296                 v6mask = 128;
1297                 mask = -1;
1298         }
1299
1300         /* interface with this name exists? */
1301         if (cont && (h = host_if(ps, mask)) != NULL)
1302                 cont = 0;
1303
1304         /* IPv4 address? */
1305         if (cont && (h = host_v4(s)) != NULL)
1306                 cont = 0;
1307
1308         /* IPv6 address? */
1309         if (cont && (h = host_v6(ps, v6mask)) != NULL)
1310                 cont = 0;
1311
1312         /* dns lookup */
1313         if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL)
1314                 cont = 0;
1315         free(ps);
1316
1317         if (h == NULL || cont == 1) {
1318                 fprintf(stderr, "no IP address found for %s\n", s);
1319                 return (NULL);
1320         }
1321         return (h);
1322 }
1323
1324 struct node_host *
1325 host_if(const char *s, int mask)
1326 {
1327         struct node_host        *n, *h = NULL;
1328         char                    *p, *ps;
1329         int                      flags = 0;
1330
1331         if ((ps = strdup(s)) == NULL)
1332                 err(1, "host_if: strdup");
1333         while ((p = strrchr(ps, ':')) != NULL) {
1334                 if (!strcmp(p+1, "network"))
1335                         flags |= PFI_AFLAG_NETWORK;
1336                 else if (!strcmp(p+1, "broadcast"))
1337                         flags |= PFI_AFLAG_BROADCAST;
1338                 else if (!strcmp(p+1, "peer"))
1339                         flags |= PFI_AFLAG_PEER;
1340                 else if (!strcmp(p+1, "0"))
1341                         flags |= PFI_AFLAG_NOALIAS;
1342                 else {
1343                         free(ps);
1344                         return (NULL);
1345                 }
1346                 *p = '\0';
1347         }
1348         if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
1349                 fprintf(stderr, "illegal combination of interface modifiers\n");
1350                 free(ps);
1351                 return (NULL);
1352         }
1353         if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
1354                 fprintf(stderr, "network or broadcast lookup, but "
1355                     "extra netmask given\n");
1356                 free(ps);
1357                 return (NULL);
1358         }
1359         if (ifa_exists(ps, 1) || !strncmp(ps, "self", IFNAMSIZ)) {
1360                 /* interface with this name exists */
1361                 h = ifa_lookup(ps, flags);
1362                 for (n = h; n != NULL && mask > -1; n = n->next)
1363                         set_ipmask(n, mask);
1364         }
1365
1366         free(ps);
1367         return (h);
1368 }
1369
1370 static struct node_host *
1371 host_v4(const char *s)
1372 {
1373         struct node_host        *h = NULL;
1374         struct in_addr           ina;
1375         int                      bits = 32;
1376
1377         memset(&ina, 0, sizeof(struct in_addr));
1378         if (strrchr(s, '/') != NULL) {
1379                 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1)
1380                         return (NULL);
1381         } else {
1382                 if (inet_pton(AF_INET, s, &ina) != 1)
1383                         return (NULL);
1384         }
1385
1386         h = calloc(1, sizeof(struct node_host));
1387         if (h == NULL)
1388                 err(1, "address: calloc");
1389         h->ifname = NULL;
1390         h->af = AF_INET;
1391         h->addr.v.a.addr.addr32[0] = ina.s_addr;
1392         set_ipmask(h, bits);
1393         h->next = NULL;
1394         h->tail = h;
1395
1396         return (h);
1397 }
1398
1399 struct node_host *
1400 host_v6(const char *s, int mask)
1401 {
1402         struct addrinfo          hints, *res;
1403         struct node_host        *h = NULL;
1404
1405         memset(&hints, 0, sizeof(hints));
1406         hints.ai_family = AF_INET6;
1407         hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1408         hints.ai_flags = AI_NUMERICHOST;
1409         if (getaddrinfo(s, "0", &hints, &res) == 0) {
1410                 h = calloc(1, sizeof(struct node_host));
1411                 if (h == NULL)
1412                         err(1, "address: calloc");
1413                 h->ifname = NULL;
1414                 h->af = AF_INET6;
1415                 memcpy(&h->addr.v.a.addr,
1416                     &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
1417                     sizeof(h->addr.v.a.addr));
1418                 h->ifindex =
1419                     ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1420                 set_ipmask(h, mask);
1421                 freeaddrinfo(res);
1422                 h->next = NULL;
1423                 h->tail = h;
1424         }
1425
1426         return (h);
1427 }
1428
1429 struct node_host *
1430 host_dns(const char *s, int v4mask, int v6mask)
1431 {
1432         struct addrinfo          hints, *res0, *res;
1433         struct node_host        *n, *h = NULL;
1434         int                      error, noalias = 0;
1435         int                      got4 = 0, got6 = 0;
1436         char                    *p, *ps;
1437
1438         if ((ps = strdup(s)) == NULL)
1439                 err(1, "host_if: strdup");
1440         if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
1441                 noalias = 1;
1442                 *p = '\0';
1443         }
1444         memset(&hints, 0, sizeof(hints));
1445         hints.ai_family = PF_UNSPEC;
1446         hints.ai_socktype = SOCK_STREAM; /* DUMMY */
1447         error = getaddrinfo(ps, NULL, &hints, &res0);
1448         if (error)
1449                 return (h);
1450
1451         for (res = res0; res; res = res->ai_next) {
1452                 if (res->ai_family != AF_INET &&
1453                     res->ai_family != AF_INET6)
1454                         continue;
1455                 if (noalias) {
1456                         if (res->ai_family == AF_INET) {
1457                                 if (got4)
1458                                         continue;
1459                                 got4 = 1;
1460                         } else {
1461                                 if (got6)
1462                                         continue;
1463                                 got6 = 1;
1464                         }
1465                 }
1466                 n = calloc(1, sizeof(struct node_host));
1467                 if (n == NULL)
1468                         err(1, "host_dns: calloc");
1469                 n->ifname = NULL;
1470                 n->af = res->ai_family;
1471                 if (res->ai_family == AF_INET) {
1472                         memcpy(&n->addr.v.a.addr,
1473                             &((struct sockaddr_in *)
1474                             res->ai_addr)->sin_addr.s_addr,
1475                             sizeof(struct in_addr));
1476                         set_ipmask(n, v4mask);
1477                 } else {
1478                         memcpy(&n->addr.v.a.addr,
1479                             &((struct sockaddr_in6 *)
1480                             res->ai_addr)->sin6_addr.s6_addr,
1481                             sizeof(struct in6_addr));
1482                         n->ifindex =
1483                             ((struct sockaddr_in6 *)
1484                             res->ai_addr)->sin6_scope_id;
1485                         set_ipmask(n, v6mask);
1486                 }
1487                 n->next = NULL;
1488                 n->tail = n;
1489                 if (h == NULL)
1490                         h = n;
1491                 else {
1492                         h->tail->next = n;
1493                         h->tail = n;
1494                 }
1495         }
1496         freeaddrinfo(res0);
1497         free(ps);
1498
1499         return (h);
1500 }
1501
1502 /*
1503  * convert a hostname to a list of addresses and put them in the given buffer.
1504  * test:
1505  *      if set to 1, only simple addresses are accepted (no netblock, no "!").
1506  */
1507 int
1508 append_addr(struct pfr_buffer *b, char *s, int test)
1509 {
1510         char                     *r;
1511         struct node_host        *h, *n;
1512         int                      rv, not = 0;
1513
1514         for (r = s; *r == '!'; r++)
1515                 not = !not;
1516         if ((n = host(r)) == NULL) {
1517                 errno = 0;
1518                 return (-1);
1519         }
1520         rv = append_addr_host(b, n, test, not);
1521         do {
1522                 h = n;
1523                 n = n->next;
1524                 free(h);
1525         } while (n != NULL);
1526         return (rv);
1527 }
1528
1529 /*
1530  * same as previous function, but with a pre-parsed input and the ability
1531  * to "negate" the result. Does not free the node_host list.
1532  * not:
1533  *      setting it to 1 is equivalent to adding "!" in front of parameter s.
1534  */
1535 int
1536 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
1537 {
1538         int                      bits;
1539         struct pfr_addr          addr;
1540
1541         do {
1542                 bzero(&addr, sizeof(addr));
1543                 addr.pfra_not = n->not ^ not;
1544                 addr.pfra_af = n->af;
1545                 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af);
1546                 switch (n->af) {
1547                 case AF_INET:
1548                         addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
1549                         bits = 32;
1550                         break;
1551                 case AF_INET6:
1552                         memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
1553                             sizeof(struct in6_addr));
1554                         bits = 128;
1555                         break;
1556                 default:
1557                         errno = EINVAL;
1558                         return (-1);
1559                 }
1560                 if ((test && (not || addr.pfra_net != bits)) ||
1561                     addr.pfra_net > bits) {
1562                         errno = EINVAL;
1563                         return (-1);
1564                 }
1565                 if (pfr_buf_add(b, &addr))
1566                         return (-1);
1567         } while ((n = n->next) != NULL);
1568
1569         return (0);
1570 }
1571
1572 int
1573 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor,
1574     const char *ruleset)
1575 {
1576         struct pfioc_trans_e trans;
1577
1578         bzero(&trans, sizeof(trans));
1579         trans.rs_num = rs_num;
1580         if (strlcpy(trans.anchor, anchor,
1581             sizeof(trans.anchor)) >= sizeof(trans.anchor) ||
1582             strlcpy(trans.ruleset, ruleset,
1583             sizeof(trans.ruleset)) >= sizeof(trans.ruleset))
1584                 errx(1, "pfctl_add_trans: strlcpy");
1585
1586         return pfr_buf_add(buf, &trans);
1587 }
1588
1589 u_int32_t
1590 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor,
1591     const char *ruleset)
1592 {
1593         const struct pfioc_trans_e *p;
1594
1595         PFRB_FOREACH(p, buf)
1596                 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor) &&
1597                     !strcmp(ruleset, p->ruleset))
1598                         return (p->ticket);
1599         errx(1, "pfr_get_ticket: assertion failed");
1600 }
1601
1602 int
1603 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
1604 {
1605         struct pfioc_trans trans;
1606
1607         bzero(&trans, sizeof(trans));
1608         trans.size = buf->pfrb_size - from;
1609         trans.esize = sizeof(struct pfioc_trans_e);
1610         trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
1611         return ioctl(dev, cmd, &trans);
1612 }