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/types.h> 37 #include <sys/ioctl.h> 38 #include <sys/socket.h> 39 #include <sys/param.h> 40 #include <sys/proc.h> 41 #include <net/if_dl.h> 42 #include <net/if.h> 43 #include <netinet/in.h> 44 #include <netinet/in_systm.h> 45 #include <netinet/ip.h> 46 #include <netinet/ip_icmp.h> 47 #include <netinet/icmp6.h> 48 #include <netinet/tcp.h> 49 #include <net/pfvar.h> 50 #include <arpa/inet.h> 51 52 #include <assert.h> 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 <inttypes.h> 64 #include <unistd.h> 65 66 #include "pfctl_parser.h" 67 #include "pfctl.h" 68 69 void print_op (u_int8_t, const char *, const char *); 70 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int); 71 void print_ugid (u_int8_t, id_t, id_t, const char *); 72 void print_flags (uint16_t); 73 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 74 struct pf_rule_addr *, sa_family_t, u_int8_t, int, int); 75 int ifa_skip_if(const char *filter, struct node_host *p); 76 77 struct node_host *host_if(const char *, int); 78 struct node_host *host_ip(const char *, int); 79 struct node_host *host_dns(const char *, int, int); 80 81 const char * const tcpflags = "FSRPAUEWe"; 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 { "listenrepv2", MLDV2_LISTENER_REPORT }, 139 }; 140 141 static const struct icmpcodeent icmp_code[] = { 142 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET }, 143 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST }, 144 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL }, 145 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT }, 146 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG }, 147 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL }, 148 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN }, 149 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN }, 150 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED }, 151 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB }, 152 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB }, 153 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET }, 154 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST }, 155 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB }, 156 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE }, 157 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF }, 158 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET }, 159 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST }, 160 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET }, 161 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST }, 162 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL }, 163 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON }, 164 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS }, 165 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS }, 166 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR }, 167 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT }, 168 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH }, 169 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX }, 170 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED }, 171 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED } 172 }; 173 174 static const struct icmpcodeent icmp6_code[] = { 175 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN }, 176 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE }, 177 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR }, 178 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE }, 179 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR }, 180 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT }, 181 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT }, 182 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY }, 183 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER }, 184 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER }, 185 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK }, 186 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER } 187 }; 188 189 const struct pf_timeout pf_timeouts[] = { 190 { "tcp.first", PFTM_TCP_FIRST_PACKET }, 191 { "tcp.opening", PFTM_TCP_OPENING }, 192 { "tcp.established", PFTM_TCP_ESTABLISHED }, 193 { "tcp.closing", PFTM_TCP_CLOSING }, 194 { "tcp.finwait", PFTM_TCP_FIN_WAIT }, 195 { "tcp.closed", PFTM_TCP_CLOSED }, 196 { "tcp.tsdiff", PFTM_TS_DIFF }, 197 { "sctp.first", PFTM_SCTP_FIRST_PACKET }, 198 { "sctp.opening", PFTM_SCTP_OPENING }, 199 { "sctp.established", PFTM_SCTP_ESTABLISHED }, 200 { "sctp.closing", PFTM_SCTP_CLOSING }, 201 { "sctp.closed", PFTM_SCTP_CLOSED }, 202 { "udp.first", PFTM_UDP_FIRST_PACKET }, 203 { "udp.single", PFTM_UDP_SINGLE }, 204 { "udp.multiple", PFTM_UDP_MULTIPLE }, 205 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 206 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 207 { "other.first", PFTM_OTHER_FIRST_PACKET }, 208 { "other.single", PFTM_OTHER_SINGLE }, 209 { "other.multiple", PFTM_OTHER_MULTIPLE }, 210 { "frag", PFTM_FRAG }, 211 { "interval", PFTM_INTERVAL }, 212 { "adaptive.start", PFTM_ADAPTIVE_START }, 213 { "adaptive.end", PFTM_ADAPTIVE_END }, 214 { "src.track", PFTM_SRC_NODE }, 215 { NULL, 0 } 216 }; 217 218 static struct hsearch_data isgroup_map; 219 220 static __attribute__((constructor)) void 221 pfctl_parser_init(void) 222 { 223 /* 224 * As hdestroy() will never be called on these tables, it will be 225 * safe to use references into the stored data as keys. 226 */ 227 if (hcreate_r(0, &isgroup_map) == 0) 228 err(1, "Failed to create interface group query response map"); 229 } 230 231 void 232 copy_satopfaddr(struct pf_addr *pfa, struct sockaddr *sa) 233 { 234 if (sa->sa_family == AF_INET6) 235 pfa->v6 = ((struct sockaddr_in6 *)sa)->sin6_addr; 236 else if (sa->sa_family == AF_INET) 237 pfa->v4 = ((struct sockaddr_in *)sa)->sin_addr; 238 else 239 warnx("unhandled af %d", sa->sa_family); 240 } 241 242 const struct icmptypeent * 243 geticmptypebynumber(u_int8_t type, sa_family_t af) 244 { 245 unsigned int i; 246 247 if (af != AF_INET6) { 248 for (i=0; i < nitems(icmp_type); i++) { 249 if (type == icmp_type[i].type) 250 return (&icmp_type[i]); 251 } 252 } else { 253 for (i=0; i < nitems(icmp6_type); i++) { 254 if (type == icmp6_type[i].type) 255 return (&icmp6_type[i]); 256 } 257 } 258 return (NULL); 259 } 260 261 const struct icmptypeent * 262 geticmptypebyname(char *w, sa_family_t af) 263 { 264 unsigned int i; 265 266 if (af != AF_INET6) { 267 for (i=0; i < nitems(icmp_type); i++) { 268 if (!strcmp(w, icmp_type[i].name)) 269 return (&icmp_type[i]); 270 } 271 } else { 272 for (i=0; i < nitems(icmp6_type); i++) { 273 if (!strcmp(w, icmp6_type[i].name)) 274 return (&icmp6_type[i]); 275 } 276 } 277 return (NULL); 278 } 279 280 const struct icmpcodeent * 281 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 282 { 283 unsigned int i; 284 285 if (af != AF_INET6) { 286 for (i=0; i < nitems(icmp_code); i++) { 287 if (type == icmp_code[i].type && 288 code == icmp_code[i].code) 289 return (&icmp_code[i]); 290 } 291 } else { 292 for (i=0; i < nitems(icmp6_code); i++) { 293 if (type == icmp6_code[i].type && 294 code == icmp6_code[i].code) 295 return (&icmp6_code[i]); 296 } 297 } 298 return (NULL); 299 } 300 301 const struct icmpcodeent * 302 geticmpcodebyname(u_long type, char *w, sa_family_t af) 303 { 304 unsigned int i; 305 306 if (af != AF_INET6) { 307 for (i=0; i < nitems(icmp_code); i++) { 308 if (type == icmp_code[i].type && 309 !strcmp(w, icmp_code[i].name)) 310 return (&icmp_code[i]); 311 } 312 } else { 313 for (i=0; i < nitems(icmp6_code); i++) { 314 if (type == icmp6_code[i].type && 315 !strcmp(w, icmp6_code[i].name)) 316 return (&icmp6_code[i]); 317 } 318 } 319 return (NULL); 320 } 321 322 void 323 print_op(u_int8_t op, const char *a1, const char *a2) 324 { 325 if (op == PF_OP_IRG) 326 printf(" %s >< %s", a1, a2); 327 else if (op == PF_OP_XRG) 328 printf(" %s <> %s", a1, a2); 329 else if (op == PF_OP_EQ) 330 printf(" = %s", a1); 331 else if (op == PF_OP_NE) 332 printf(" != %s", a1); 333 else if (op == PF_OP_LT) 334 printf(" < %s", a1); 335 else if (op == PF_OP_LE) 336 printf(" <= %s", a1); 337 else if (op == PF_OP_GT) 338 printf(" > %s", a1); 339 else if (op == PF_OP_GE) 340 printf(" >= %s", a1); 341 else if (op == PF_OP_RRG) 342 printf(" %s:%s", a1, a2); 343 } 344 345 void 346 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric) 347 { 348 char a1[6], a2[6]; 349 struct servent *s; 350 351 if (!numeric) 352 s = getservbyport(p1, proto); 353 else 354 s = NULL; 355 p1 = ntohs(p1); 356 p2 = ntohs(p2); 357 snprintf(a1, sizeof(a1), "%u", p1); 358 snprintf(a2, sizeof(a2), "%u", p2); 359 printf(" port"); 360 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 361 print_op(op, s->s_name, a2); 362 else 363 print_op(op, a1, a2); 364 } 365 366 void 367 print_ugid(u_int8_t op, id_t i1, id_t i2, const char *t) 368 { 369 char a1[11], a2[11]; 370 371 snprintf(a1, sizeof(a1), "%ju", (uintmax_t)i1); 372 snprintf(a2, sizeof(a2), "%ju", (uintmax_t)i2); 373 printf(" %s", t); 374 if (i1 == -1 && (op == PF_OP_EQ || op == PF_OP_NE)) 375 print_op(op, "unknown", a2); 376 else 377 print_op(op, a1, a2); 378 } 379 380 void 381 print_flags(uint16_t f) 382 { 383 int i; 384 385 for (i = 0; tcpflags[i]; ++i) 386 if (f & (1 << i)) 387 printf("%c", tcpflags[i]); 388 } 389 390 void 391 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 392 sa_family_t af, u_int8_t proto, int verbose, int numeric) 393 { 394 char buf[PF_OSFP_LEN*3]; 395 if (src->addr.type == PF_ADDR_ADDRMASK && 396 dst->addr.type == PF_ADDR_ADDRMASK && 397 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 398 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 399 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 400 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 401 !src->neg && !dst->neg && 402 !src->port_op && !dst->port_op && 403 osfp == PF_OSFP_ANY) 404 printf(" all"); 405 else { 406 printf(" from "); 407 if (src->neg) 408 printf("! "); 409 print_addr(&src->addr, af, verbose); 410 if (src->port_op) 411 print_port(src->port_op, src->port[0], 412 src->port[1], 413 proto == IPPROTO_TCP ? "tcp" : "udp", 414 numeric); 415 if (osfp != PF_OSFP_ANY) 416 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 417 sizeof(buf))); 418 419 printf(" to "); 420 if (dst->neg) 421 printf("! "); 422 print_addr(&dst->addr, af, verbose); 423 if (dst->port_op) 424 print_port(dst->port_op, dst->port[0], 425 dst->port[1], 426 proto == IPPROTO_TCP ? "tcp" : "udp", 427 numeric); 428 } 429 } 430 431 void 432 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2, int id) 433 { 434 struct pfctl_pooladdr *pooladdr; 435 436 if ((TAILQ_FIRST(&pool->list) != NULL) && 437 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 438 printf("{ "); 439 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 440 switch (id) { 441 case PF_NAT: 442 case PF_RDR: 443 case PF_BINAT: 444 print_addr(&pooladdr->addr, pooladdr->af, 0); 445 break; 446 case PF_PASS: 447 case PF_MATCH: 448 if (PF_AZERO(&pooladdr->addr.v.a.addr, pooladdr->af)) 449 printf("%s", pooladdr->ifname); 450 else { 451 printf("(%s ", pooladdr->ifname); 452 print_addr(&pooladdr->addr, pooladdr->af, 0); 453 printf(")"); 454 } 455 break; 456 default: 457 break; 458 } 459 if (TAILQ_NEXT(pooladdr, entries) != NULL) 460 printf(", "); 461 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 462 printf(" }"); 463 } 464 switch (id) { 465 case PF_NAT: 466 if ((p1 != PF_NAT_PROXY_PORT_LOW || 467 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 468 if (p1 == p2) 469 printf(" port %u", p1); 470 else 471 printf(" port %u:%u", p1, p2); 472 } 473 break; 474 case PF_RDR: 475 if (p1) { 476 printf(" port %u", p1); 477 if (p2 && (p2 != p1)) 478 printf(":%u", p2); 479 } 480 break; 481 default: 482 break; 483 } 484 switch (pool->opts & PF_POOL_TYPEMASK) { 485 case PF_POOL_NONE: 486 break; 487 case PF_POOL_BITMASK: 488 printf(" bitmask"); 489 break; 490 case PF_POOL_RANDOM: 491 printf(" random"); 492 break; 493 case PF_POOL_SRCHASH: 494 printf(" source-hash 0x%08x%08x%08x%08x", 495 pool->key.key32[0], pool->key.key32[1], 496 pool->key.key32[2], pool->key.key32[3]); 497 break; 498 case PF_POOL_ROUNDROBIN: 499 printf(" round-robin"); 500 break; 501 } 502 if (pool->opts & PF_POOL_STICKYADDR) 503 printf(" sticky-address"); 504 if (pool->opts & PF_POOL_ENDPI) 505 printf(" endpoint-independent"); 506 if (id == PF_NAT && p1 == 0 && p2 == 0) 507 printf(" static-port"); 508 if (pool->mape.offset > 0) 509 printf(" map-e-portset %u/%u/%u", 510 pool->mape.offset, pool->mape.psidlen, pool->mape.psid); 511 if (pool->opts & PF_POOL_IPV6NH) 512 printf(" prefer-ipv6-nexthop"); 513 } 514 515 void 516 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts) 517 { 518 struct pfctl_status_counter *c; 519 char statline[80], *running; 520 time_t runtime; 521 int i; 522 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 523 static const char hex[] = "0123456789abcdef"; 524 525 runtime = time(NULL) - s->since; 526 running = s->running ? "Enabled" : "Disabled"; 527 528 if (s->since) { 529 unsigned int sec, min, hrs; 530 time_t day = runtime; 531 532 sec = day % 60; 533 day /= 60; 534 min = day % 60; 535 day /= 60; 536 hrs = day % 24; 537 day /= 24; 538 snprintf(statline, sizeof(statline), 539 "Status: %s for %lld days %.2u:%.2u:%.2u", 540 running, (long long)day, hrs, min, sec); 541 } else 542 snprintf(statline, sizeof(statline), "Status: %s", running); 543 printf("%-44s", statline); 544 switch (s->debug) { 545 case PF_DEBUG_NONE: 546 printf("%15s\n\n", "Debug: None"); 547 break; 548 case PF_DEBUG_URGENT: 549 printf("%15s\n\n", "Debug: Urgent"); 550 break; 551 case PF_DEBUG_MISC: 552 printf("%15s\n\n", "Debug: Misc"); 553 break; 554 case PF_DEBUG_NOISY: 555 printf("%15s\n\n", "Debug: Loud"); 556 break; 557 } 558 559 if (opts & PF_OPT_VERBOSE) { 560 printf("Hostid: 0x%08x\n", s->hostid); 561 562 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 563 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 564 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 565 } 566 buf[i + i] = '\0'; 567 printf("Checksum: 0x%s\n\n", buf); 568 } 569 570 if (s->ifname[0] != 0) { 571 printf("Interface Stats for %-16s %5s %16s\n", 572 s->ifname, "IPv4", "IPv6"); 573 printf(" %-25s %14llu %16llu\n", "Bytes In", 574 (unsigned long long)s->bcounters[0][0], 575 (unsigned long long)s->bcounters[1][0]); 576 printf(" %-25s %14llu %16llu\n", "Bytes Out", 577 (unsigned long long)s->bcounters[0][1], 578 (unsigned long long)s->bcounters[1][1]); 579 printf(" Packets In\n"); 580 printf(" %-23s %14llu %16llu\n", "Passed", 581 (unsigned long long)s->pcounters[0][0][PF_PASS], 582 (unsigned long long)s->pcounters[1][0][PF_PASS]); 583 printf(" %-23s %14llu %16llu\n", "Blocked", 584 (unsigned long long)s->pcounters[0][0][PF_DROP], 585 (unsigned long long)s->pcounters[1][0][PF_DROP]); 586 printf(" Packets Out\n"); 587 printf(" %-23s %14llu %16llu\n", "Passed", 588 (unsigned long long)s->pcounters[0][1][PF_PASS], 589 (unsigned long long)s->pcounters[1][1][PF_PASS]); 590 printf(" %-23s %14llu %16llu\n\n", "Blocked", 591 (unsigned long long)s->pcounters[0][1][PF_DROP], 592 (unsigned long long)s->pcounters[1][1][PF_DROP]); 593 } 594 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 595 printf(" %-25s %14ju %14s\n", "current entries", s->states, ""); 596 TAILQ_FOREACH(c, &s->fcounters, entry) { 597 printf(" %-25s %14ju ", c->name, c->counter); 598 if (runtime > 0) 599 printf("%14.1f/s\n", 600 (double)c->counter / (double)runtime); 601 else 602 printf("%14s\n", ""); 603 } 604 if (opts & PF_OPT_VERBOSE) { 605 printf("Source Tracking Table\n"); 606 printf(" %-25s %14ju %14s\n", "current entries", 607 s->src_nodes, ""); 608 TAILQ_FOREACH(c, &s->scounters, entry) { 609 printf(" %-25s %14ju ", c->name, c->counter); 610 if (runtime > 0) 611 printf("%14.1f/s\n", 612 (double)c->counter / (double)runtime); 613 else 614 printf("%14s\n", ""); 615 } 616 } 617 printf("Counters\n"); 618 TAILQ_FOREACH(c, &s->counters, entry) { 619 printf(" %-25s %14ju ", c->name, c->counter); 620 if (runtime > 0) 621 printf("%14.1f/s\n", 622 (double)c->counter / (double)runtime); 623 else 624 printf("%14s\n", ""); 625 } 626 if (opts & PF_OPT_VERBOSE) { 627 printf("Limit Counters\n"); 628 TAILQ_FOREACH(c, &s->lcounters, entry) { 629 printf(" %-25s %14ju ", c->name, c->counter); 630 if (runtime > 0) 631 printf("%14.1f/s\n", 632 (double)c->counter / (double)runtime); 633 else 634 printf("%14s\n", ""); 635 } 636 637 printf("Syncookies\n"); 638 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE); 639 printf(" %-25s %s\n", "mode", 640 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]); 641 printf(" %-25s %s\n", "active", 642 s->syncookies_active ? "active" : "inactive"); 643 if (opts & PF_OPT_VERBOSE2) { 644 printf(" %-25s %d %%\n", "highwater", cookies->highwater); 645 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater); 646 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states); 647 } 648 printf("Reassemble %24s %s\n", 649 s->reass & PF_REASS_ENABLED ? "yes" : "no", 650 s->reass & PF_REASS_NODF ? "no-df" : "" 651 ); 652 } 653 } 654 655 void 656 print_running(struct pfctl_status *status) 657 { 658 printf("%s\n", status->running ? "Enabled" : "Disabled"); 659 } 660 661 void 662 print_src_node(struct pfctl_src_node *sn, int opts) 663 { 664 struct pf_addr_wrap aw; 665 uint64_t min, sec; 666 const char *sn_type_names[] = PF_SN_TYPE_NAMES; 667 668 memset(&aw, 0, sizeof(aw)); 669 if (sn->af == AF_INET) 670 aw.v.a.mask.addr32[0] = 0xffffffff; 671 else 672 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 673 674 aw.v.a.addr = sn->addr; 675 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 676 printf(" -> "); 677 aw.v.a.addr = sn->raddr; 678 print_addr(&aw, sn->raf, opts & PF_OPT_VERBOSE2); 679 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 680 sn->conn, sn->conn_rate.count / 1000, 681 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 682 if (opts & PF_OPT_VERBOSE) { 683 sec = sn->creation % 60; 684 sn->creation /= 60; 685 min = sn->creation % 60; 686 sn->creation /= 60; 687 printf(" age %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64, 688 sn->creation, min, sec); 689 if (sn->states == 0) { 690 sec = sn->expire % 60; 691 sn->expire /= 60; 692 min = sn->expire % 60; 693 sn->expire /= 60; 694 printf(", expires in %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64, 695 sn->expire, min, sec); 696 } 697 printf(", %" PRIu64 " pkts, %" PRIu64 " bytes", 698 sn->packets[0] + sn->packets[1], 699 sn->bytes[0] + sn->bytes[1]); 700 switch (sn->ruletype) { 701 case PF_NAT: 702 if (sn->rule != -1) 703 printf(", nat rule %u", sn->rule); 704 break; 705 case PF_RDR: 706 if (sn->rule != -1) 707 printf(", rdr rule %u", sn->rule); 708 break; 709 case PF_PASS: 710 case PF_MATCH: 711 if (sn->rule != -1) 712 printf(", filter rule %u", sn->rule); 713 break; 714 } 715 printf(", %s", sn_type_names[sn->type]); 716 printf("\n"); 717 } 718 } 719 720 static void 721 print_eth_addr(const struct pfctl_eth_addr *a) 722 { 723 int i, masklen = ETHER_ADDR_LEN * 8; 724 bool seen_unset = false; 725 726 for (i = 0; i < ETHER_ADDR_LEN; i++) { 727 if (a->addr[i] != 0) 728 break; 729 } 730 731 /* Unset, so don't print anything. */ 732 if (i == ETHER_ADDR_LEN) 733 return; 734 735 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "", 736 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4], 737 a->addr[5]); 738 739 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) { 740 bool isset = a->mask[i / 8] & (1 << i % 8); 741 742 if (! seen_unset) { 743 if (isset) 744 continue; 745 seen_unset = true; 746 masklen = i; 747 } else { 748 /* Not actually a continuous mask, so print the whole 749 * thing. */ 750 if (isset) 751 break; 752 continue; 753 } 754 } 755 756 if (masklen == (ETHER_ADDR_LEN * 8)) 757 return; 758 759 if (i == (ETHER_ADDR_LEN * 8)) { 760 printf("/%d", masklen); 761 return; 762 } 763 764 printf("&%02x:%02x:%02x:%02x:%02x:%02x", 765 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4], 766 a->mask[5]); 767 } 768 769 void 770 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call, 771 int rule_numbers) 772 { 773 static const char *actiontypes[] = { "pass", "block", "", "", "", "", 774 "", "", "", "", "", "", "match" }; 775 776 int i; 777 778 if (rule_numbers) 779 printf("@%u ", r->nr); 780 781 printf("ether "); 782 if (anchor_call[0]) { 783 if (anchor_call[0] == '_') { 784 printf("anchor"); 785 } else 786 printf("anchor \"%s\"", anchor_call); 787 } else { 788 printf("%s", actiontypes[r->action]); 789 } 790 if (r->direction == PF_IN) 791 printf(" in"); 792 else if (r->direction == PF_OUT) 793 printf(" out"); 794 795 if (r->quick) 796 printf(" quick"); 797 if (r->ifname[0]) { 798 if (r->ifnot) 799 printf(" on ! %s", r->ifname); 800 else 801 printf(" on %s", r->ifname); 802 } 803 if (r->bridge_to[0]) 804 printf(" bridge-to %s", r->bridge_to); 805 if (r->proto) 806 printf(" proto 0x%04x", r->proto); 807 808 if (r->src.isset) { 809 printf(" from "); 810 print_eth_addr(&r->src); 811 } 812 if (r->dst.isset) { 813 printf(" to "); 814 print_eth_addr(&r->dst); 815 } 816 printf(" l3"); 817 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst, 818 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0, 819 0, 0); 820 821 i = 0; 822 while (r->label[i][0]) 823 printf(" label \"%s\"", r->label[i++]); 824 if (r->ridentifier) 825 printf(" ridentifier %u", r->ridentifier); 826 827 if (r->qname[0]) 828 printf(" queue %s", r->qname); 829 if (r->tagname[0]) 830 printf(" tag %s", r->tagname); 831 if (r->match_tagname[0]) { 832 if (r->match_tag_not) 833 printf(" !"); 834 printf(" tagged %s", r->match_tagname); 835 } 836 if (r->dnpipe) 837 printf(" %s %d", 838 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 839 r->dnpipe); 840 } 841 842 void 843 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric) 844 { 845 static const char *actiontypes[] = { "pass", "block", "scrub", 846 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr", 847 "", "", "match"}; 848 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 849 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 850 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 851 int i, ropts; 852 char *p; 853 854 if (verbose) 855 printf("@%d ", r->nr); 856 if (r->action == PF_MATCH) 857 printf("match"); 858 else if (r->action > PF_NORDR) 859 printf("action(%d)", r->action); 860 else if (anchor_call[0]) { 861 p = strrchr(anchor_call, '/'); 862 if (p ? p[1] == '_' : anchor_call[0] == '_') 863 printf("%s", anchortypes[r->action]); 864 else 865 printf("%s \"%s\"", anchortypes[r->action], 866 anchor_call); 867 } else { 868 printf("%s", actiontypes[r->action]); 869 if (r->natpass) 870 printf(" pass"); 871 } 872 if (r->action == PF_DROP) { 873 if (r->rule_flag & PFRULE_RETURN) 874 printf(" return"); 875 else if (r->rule_flag & PFRULE_RETURNRST) { 876 if (!r->return_ttl) 877 printf(" return-rst"); 878 else 879 printf(" return-rst(ttl %d)", r->return_ttl); 880 } else if (r->rule_flag & PFRULE_RETURNICMP) { 881 const struct icmpcodeent *ic, *ic6; 882 883 ic = geticmpcodebynumber(r->return_icmp >> 8, 884 r->return_icmp & 255, AF_INET); 885 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 886 r->return_icmp6 & 255, AF_INET6); 887 888 switch (r->af) { 889 case AF_INET: 890 printf(" return-icmp"); 891 if (ic == NULL) 892 printf("(%u)", r->return_icmp & 255); 893 else 894 printf("(%s)", ic->name); 895 break; 896 case AF_INET6: 897 printf(" return-icmp6"); 898 if (ic6 == NULL) 899 printf("(%u)", r->return_icmp6 & 255); 900 else 901 printf("(%s)", ic6->name); 902 break; 903 default: 904 printf(" return-icmp"); 905 if (ic == NULL) 906 printf("(%u, ", r->return_icmp & 255); 907 else 908 printf("(%s, ", ic->name); 909 if (ic6 == NULL) 910 printf("%u)", r->return_icmp6 & 255); 911 else 912 printf("%s)", ic6->name); 913 break; 914 } 915 } else 916 printf(" drop"); 917 } 918 if (r->direction == PF_IN) 919 printf(" in"); 920 else if (r->direction == PF_OUT) 921 printf(" out"); 922 if (r->log) { 923 printf(" log"); 924 if (r->log & ~PF_LOG || r->logif) { 925 int count = 0; 926 927 printf(" ("); 928 if (r->log & PF_LOG_ALL) 929 printf("%sall", count++ ? ", " : ""); 930 if (r->log & PF_LOG_MATCHES) 931 printf("%smatches", count++ ? ", " : ""); 932 if (r->log & PF_LOG_USER) 933 printf("%suser", count++ ? ", " : ""); 934 if (r->logif) 935 printf("%sto pflog%u", count++ ? ", " : "", 936 r->logif); 937 printf(")"); 938 } 939 } 940 if (r->quick) 941 printf(" quick"); 942 if (r->ifname[0]) { 943 if (r->ifnot) 944 printf(" on ! %s", r->ifname); 945 else 946 printf(" on %s", r->ifname); 947 } 948 if (r->rt) { 949 if (r->rt == PF_ROUTETO) 950 printf(" route-to"); 951 else if (r->rt == PF_REPLYTO) 952 printf(" reply-to"); 953 else if (r->rt == PF_DUPTO) 954 printf(" dup-to"); 955 printf(" "); 956 print_pool(&r->route, 0, 0, PF_PASS); 957 } 958 if (r->af) { 959 if (r->af == AF_INET) 960 printf(" inet"); 961 else 962 printf(" inet6"); 963 } 964 if (r->proto) { 965 const char *protoname; 966 967 if ((protoname = pfctl_proto2name(r->proto)) != NULL) 968 printf(" proto %s", protoname); 969 else 970 printf(" proto %u", r->proto); 971 } 972 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 973 verbose, numeric); 974 if (r->rcv_ifname[0]) 975 printf(" %sreceived-on %s", r->rcvifnot ? "!" : "", 976 r->rcv_ifname); 977 if (r->uid.op) 978 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user"); 979 if (r->gid.op) 980 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group"); 981 if (r->flags || r->flagset) { 982 printf(" flags "); 983 print_flags(r->flags); 984 printf("/"); 985 print_flags(r->flagset); 986 } else if ((r->action == PF_PASS || r->action == PF_MATCH) && 987 (!r->proto || r->proto == IPPROTO_TCP) && 988 !(r->rule_flag & PFRULE_FRAGMENT) && 989 !anchor_call[0] && r->keep_state) 990 printf(" flags any"); 991 if (r->type) { 992 const struct icmptypeent *it; 993 994 it = geticmptypebynumber(r->type-1, r->af); 995 if (r->af != AF_INET6) 996 printf(" icmp-type"); 997 else 998 printf(" icmp6-type"); 999 if (it != NULL) 1000 printf(" %s", it->name); 1001 else 1002 printf(" %u", r->type-1); 1003 if (r->code) { 1004 const struct icmpcodeent *ic; 1005 1006 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 1007 if (ic != NULL) 1008 printf(" code %s", ic->name); 1009 else 1010 printf(" code %u", r->code-1); 1011 } 1012 } 1013 if (r->tos) 1014 printf(" tos 0x%2.2x", r->tos); 1015 if (r->prio) 1016 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 1017 if (r->pktrate.limit) 1018 printf(" max-pkt-rate %u/%u", r->pktrate.limit, 1019 r->pktrate.seconds); 1020 if (r->max_pkt_size) 1021 printf( " max-pkt-size %u", r->max_pkt_size); 1022 if (r->scrub_flags & PFSTATE_SETMASK) { 1023 char *comma = ""; 1024 printf(" set ("); 1025 if (r->scrub_flags & PFSTATE_SETPRIO) { 1026 if (r->set_prio[0] == r->set_prio[1]) 1027 printf("%s prio %u", comma, r->set_prio[0]); 1028 else 1029 printf("%s prio(%u, %u)", comma, r->set_prio[0], 1030 r->set_prio[1]); 1031 comma = ","; 1032 } 1033 if (r->scrub_flags & PFSTATE_SETTOS) { 1034 printf("%s tos 0x%2.2x", comma, r->set_tos); 1035 comma = ","; 1036 } 1037 printf(" )"); 1038 } 1039 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 1040 printf(" no state"); 1041 else if (r->keep_state == PF_STATE_NORMAL) 1042 printf(" keep state"); 1043 else if (r->keep_state == PF_STATE_MODULATE) 1044 printf(" modulate state"); 1045 else if (r->keep_state == PF_STATE_SYNPROXY) 1046 printf(" synproxy state"); 1047 if (r->prob) { 1048 char buf[20]; 1049 1050 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 1051 for (i = strlen(buf)-1; i > 0; i--) { 1052 if (buf[i] == '0') 1053 buf[i] = '\0'; 1054 else { 1055 if (buf[i] == '.') 1056 buf[i] = '\0'; 1057 break; 1058 } 1059 } 1060 printf(" probability %s%%", buf); 1061 } 1062 ropts = 0; 1063 if (r->max_states || r->max_src_nodes || r->max_src_states) 1064 ropts = 1; 1065 if (r->rule_flag & PFRULE_NOSYNC) 1066 ropts = 1; 1067 if (r->rule_flag & PFRULE_SRCTRACK) 1068 ropts = 1; 1069 if (r->rule_flag & PFRULE_IFBOUND) 1070 ropts = 1; 1071 if (r->rule_flag & PFRULE_STATESLOPPY) 1072 ropts = 1; 1073 if (r->rule_flag & PFRULE_PFLOW) 1074 ropts = 1; 1075 for (i = 0; !ropts && i < PFTM_MAX; ++i) 1076 if (r->timeout[i]) 1077 ropts = 1; 1078 if (ropts) { 1079 printf(" ("); 1080 if (r->max_states) { 1081 printf("max %u", r->max_states); 1082 ropts = 0; 1083 } 1084 if (r->rule_flag & PFRULE_NOSYNC) { 1085 if (!ropts) 1086 printf(", "); 1087 printf("no-sync"); 1088 ropts = 0; 1089 } 1090 if (r->rule_flag & PFRULE_SRCTRACK) { 1091 if (!ropts) 1092 printf(", "); 1093 printf("source-track"); 1094 if (r->rule_flag & PFRULE_RULESRCTRACK) 1095 printf(" rule"); 1096 else 1097 printf(" global"); 1098 ropts = 0; 1099 } 1100 if (r->max_src_states) { 1101 if (!ropts) 1102 printf(", "); 1103 printf("max-src-states %u", r->max_src_states); 1104 ropts = 0; 1105 } 1106 if (r->max_src_conn) { 1107 if (!ropts) 1108 printf(", "); 1109 printf("max-src-conn %u", r->max_src_conn); 1110 ropts = 0; 1111 } 1112 if (r->max_src_conn_rate.limit) { 1113 if (!ropts) 1114 printf(", "); 1115 printf("max-src-conn-rate %u/%u", 1116 r->max_src_conn_rate.limit, 1117 r->max_src_conn_rate.seconds); 1118 ropts = 0; 1119 } 1120 if (r->max_src_nodes) { 1121 if (!ropts) 1122 printf(", "); 1123 printf("max-src-nodes %u", r->max_src_nodes); 1124 ropts = 0; 1125 } 1126 if (r->overload_tblname[0]) { 1127 if (!ropts) 1128 printf(", "); 1129 printf("overload <%s>", r->overload_tblname); 1130 if (r->flush) 1131 printf(" flush"); 1132 if (r->flush & PF_FLUSH_GLOBAL) 1133 printf(" global"); 1134 } 1135 if (r->rule_flag & PFRULE_IFBOUND) { 1136 if (!ropts) 1137 printf(", "); 1138 printf("if-bound"); 1139 ropts = 0; 1140 } 1141 if (r->rule_flag & PFRULE_STATESLOPPY) { 1142 if (!ropts) 1143 printf(", "); 1144 printf("sloppy"); 1145 ropts = 0; 1146 } 1147 if (r->rule_flag & PFRULE_PFLOW) { 1148 if (!ropts) 1149 printf(", "); 1150 printf("pflow"); 1151 ropts = 0; 1152 } 1153 for (i = 0; i < PFTM_MAX; ++i) 1154 if (r->timeout[i]) { 1155 int j; 1156 1157 if (!ropts) 1158 printf(", "); 1159 ropts = 0; 1160 for (j = 0; pf_timeouts[j].name != NULL; 1161 ++j) 1162 if (pf_timeouts[j].timeout == i) 1163 break; 1164 printf("%s %u", pf_timeouts[j].name == NULL ? 1165 "inv.timeout" : pf_timeouts[j].name, 1166 r->timeout[i]); 1167 } 1168 printf(")"); 1169 } 1170 if (r->allow_opts) 1171 printf(" allow-opts"); 1172 if (r->rule_flag & PFRULE_FRAGMENT) 1173 printf(" fragment"); 1174 if (r->action == PF_SCRUB) { 1175 /* Scrub flags for old-style scrub. */ 1176 if (r->rule_flag & PFRULE_NODF) 1177 printf(" no-df"); 1178 if (r->rule_flag & PFRULE_RANDOMID) 1179 printf(" random-id"); 1180 if (r->min_ttl) 1181 printf(" min-ttl %d", r->min_ttl); 1182 if (r->max_mss) 1183 printf(" max-mss %d", r->max_mss); 1184 if (r->rule_flag & PFRULE_SET_TOS) 1185 printf(" set-tos 0x%2.2x", r->set_tos); 1186 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1187 printf(" reassemble tcp"); 1188 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */ 1189 printf(" fragment %sreassemble", 1190 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : ""); 1191 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) { 1192 /* Scrub actions on normal rules. */ 1193 printf(" scrub("); 1194 if (r->scrub_flags & PFSTATE_NODF) 1195 printf(" no-df"); 1196 if (r->scrub_flags & PFSTATE_RANDOMID) 1197 printf(" random-id"); 1198 if (r->min_ttl) 1199 printf(" min-ttl %d", r->min_ttl); 1200 if (r->scrub_flags & PFSTATE_SETTOS) 1201 printf(" set-tos 0x%2.2x", r->set_tos); 1202 if (r->scrub_flags & PFSTATE_SCRUB_TCP) 1203 printf(" reassemble tcp"); 1204 if (r->max_mss) 1205 printf(" max-mss %d", r->max_mss); 1206 printf(")"); 1207 } 1208 i = 0; 1209 while (r->label[i][0]) 1210 printf(" label \"%s\"", r->label[i++]); 1211 if (r->ridentifier) 1212 printf(" ridentifier %u", r->ridentifier); 1213 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */ 1214 if (r->dnrpipe) 1215 printf(" %s(%d, %d)", 1216 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1217 r->dnpipe, r->dnrpipe); 1218 else if (r->dnpipe) 1219 printf(" %s %d", 1220 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1221 r->dnpipe); 1222 if (r->qname[0] && r->pqname[0]) 1223 printf(" queue(%s, %s)", r->qname, r->pqname); 1224 else if (r->qname[0]) 1225 printf(" queue %s", r->qname); 1226 if (r->tagname[0]) 1227 printf(" tag %s", r->tagname); 1228 if (r->match_tagname[0]) { 1229 if (r->match_tag_not) 1230 printf(" !"); 1231 printf(" tagged %s", r->match_tagname); 1232 } 1233 if (r->rtableid != -1) 1234 printf(" rtable %u", r->rtableid); 1235 if (r->divert.port) { 1236 #ifdef __FreeBSD__ 1237 printf(" divert-to %u", ntohs(r->divert.port)); 1238 #else 1239 if (PF_AZERO(&r->divert.addr, r->af)) { 1240 printf(" divert-reply"); 1241 } else { 1242 printf(" divert-to "); 1243 print_addr_str(r->af, &r->divert.addr); 1244 printf(" port %u", ntohs(r->divert.port)); 1245 } 1246 #endif 1247 } 1248 if (anchor_call[0]) 1249 return; 1250 if (r->action == PF_NAT || r->action == PF_BINAT || r->action == PF_RDR) { 1251 printf(" -> "); 1252 print_pool(&r->rdr, r->rdr.proxy_port[0], 1253 r->rdr.proxy_port[1], r->action); 1254 } else { 1255 if (!TAILQ_EMPTY(&r->nat.list)) { 1256 if (r->rule_flag & PFRULE_AFTO) { 1257 printf(" af-to %s from ", r->naf == AF_INET ? "inet" : (r->naf == AF_INET6 ? "inet6" : "? ")); 1258 } else { 1259 printf(" nat-to "); 1260 } 1261 print_pool(&r->nat, r->nat.proxy_port[0], 1262 r->nat.proxy_port[1], PF_NAT); 1263 } 1264 if (!TAILQ_EMPTY(&r->rdr.list)) { 1265 if (r->rule_flag & PFRULE_AFTO) { 1266 printf(" to "); 1267 } else { 1268 printf(" rdr-to "); 1269 } 1270 print_pool(&r->rdr, r->rdr.proxy_port[0], 1271 r->rdr.proxy_port[1], PF_RDR); 1272 } 1273 } 1274 } 1275 1276 void 1277 print_tabledef(const char *name, int flags, int addrs, 1278 struct node_tinithead *nodes) 1279 { 1280 struct node_tinit *ti, *nti; 1281 struct node_host *h; 1282 1283 printf("table <%s>", name); 1284 if (flags & PFR_TFLAG_CONST) 1285 printf(" const"); 1286 if (flags & PFR_TFLAG_PERSIST) 1287 printf(" persist"); 1288 if (flags & PFR_TFLAG_COUNTERS) 1289 printf(" counters"); 1290 SIMPLEQ_FOREACH(ti, nodes, entries) { 1291 if (ti->file) { 1292 printf(" file \"%s\"", ti->file); 1293 continue; 1294 } 1295 printf(" {"); 1296 for (;;) { 1297 for (h = ti->host; h != NULL; h = h->next) { 1298 printf(h->not ? " !" : " "); 1299 print_addr(&h->addr, h->af, 0); 1300 } 1301 nti = SIMPLEQ_NEXT(ti, entries); 1302 if (nti != NULL && nti->file == NULL) 1303 ti = nti; /* merge lists */ 1304 else 1305 break; 1306 } 1307 printf(" }"); 1308 } 1309 if (addrs && SIMPLEQ_EMPTY(nodes)) 1310 printf(" { }"); 1311 printf("\n"); 1312 } 1313 1314 int 1315 parse_flags(char *s) 1316 { 1317 char *p, *q; 1318 uint16_t f = 0; 1319 1320 for (p = s; *p; p++) { 1321 if ((q = strchr(tcpflags, *p)) == NULL) 1322 return -1; 1323 else 1324 f |= 1 << (q - tcpflags); 1325 } 1326 return (f ? f : TH_FLAGS); 1327 } 1328 1329 void 1330 set_ipmask(struct node_host *h, int bb) 1331 { 1332 struct pf_addr *m, *n; 1333 int i, j = 0; 1334 uint8_t b; 1335 1336 m = &h->addr.v.a.mask; 1337 memset(m, 0, sizeof(*m)); 1338 1339 if (bb == -1) 1340 b = h->af == AF_INET ? 32 : 128; 1341 else 1342 b = bb; 1343 1344 while (b >= 32) { 1345 m->addr32[j++] = 0xffffffff; 1346 b -= 32; 1347 } 1348 for (i = 31; i > 31-b; --i) 1349 m->addr32[j] |= (1 << i); 1350 if (b) 1351 m->addr32[j] = htonl(m->addr32[j]); 1352 1353 /* Mask off bits of the address that will never be used. */ 1354 n = &h->addr.v.a.addr; 1355 if (h->addr.type == PF_ADDR_ADDRMASK) 1356 for (i = 0; i < 4; i++) 1357 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1358 } 1359 1360 int 1361 check_netmask(struct node_host *h, sa_family_t af) 1362 { 1363 struct node_host *n = NULL; 1364 struct pf_addr *m; 1365 1366 for (n = h; n != NULL; n = n->next) { 1367 if (h->addr.type == PF_ADDR_TABLE) 1368 continue; 1369 m = &h->addr.v.a.mask; 1370 /* netmasks > 32 bit are invalid on v4 */ 1371 if (af == AF_INET && 1372 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1373 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1374 unmask(m)); 1375 return (1); 1376 } 1377 } 1378 return (0); 1379 } 1380 1381 struct node_host * 1382 gen_dynnode(struct node_host *h, sa_family_t af) 1383 { 1384 struct node_host *n; 1385 1386 if (h->addr.type != PF_ADDR_DYNIFTL) 1387 return (NULL); 1388 1389 if ((n = calloc(1, sizeof(*n))) == NULL) 1390 return (NULL); 1391 bcopy(h, n, sizeof(*n)); 1392 n->ifname = NULL; 1393 n->next = NULL; 1394 n->tail = NULL; 1395 1396 /* fix up netmask */ 1397 if (af == AF_INET && unmask(&n->addr.v.a.mask) > 32) 1398 set_ipmask(n, 32); 1399 1400 return (n); 1401 } 1402 1403 /* interface lookup routines */ 1404 1405 static struct node_host *iftab; 1406 1407 /* 1408 * Retrieve the list of groups this interface is a member of and make sure 1409 * each group is in the group map. 1410 */ 1411 static void 1412 ifa_add_groups_to_map(char *ifa_name) 1413 { 1414 int s, len; 1415 struct ifgroupreq ifgr; 1416 struct ifg_req *ifg; 1417 1418 s = get_query_socket(); 1419 1420 /* Get size of group list for this interface */ 1421 memset(&ifgr, 0, sizeof(ifgr)); 1422 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1423 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1424 err(1, "SIOCGIFGROUP"); 1425 1426 /* Retrieve group list for this interface */ 1427 len = ifgr.ifgr_len; 1428 ifgr.ifgr_groups = 1429 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1430 sizeof(struct ifg_req)); 1431 if (ifgr.ifgr_groups == NULL) 1432 err(1, "calloc"); 1433 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1434 err(1, "SIOCGIFGROUP"); 1435 1436 ifg = ifgr.ifgr_groups; 1437 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1438 len -= sizeof(struct ifg_req); 1439 if (strcmp(ifg->ifgrq_group, "all")) { 1440 ENTRY item; 1441 ENTRY *ret_item; 1442 int *answer; 1443 1444 item.key = ifg->ifgrq_group; 1445 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1446 struct ifgroupreq ifgr2; 1447 1448 /* Don't know the answer yet */ 1449 if ((answer = malloc(sizeof(int))) == NULL) 1450 err(1, "malloc"); 1451 1452 bzero(&ifgr2, sizeof(ifgr2)); 1453 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1454 sizeof(ifgr2.ifgr_name)); 1455 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1456 *answer = ifgr2.ifgr_len; 1457 else 1458 *answer = 0; 1459 1460 item.key = strdup(ifg->ifgrq_group); 1461 item.data = answer; 1462 if (hsearch_r(item, ENTER, &ret_item, 1463 &isgroup_map) == 0) 1464 err(1, "interface group query response" 1465 " map insert"); 1466 } 1467 } 1468 } 1469 free(ifgr.ifgr_groups); 1470 } 1471 1472 void 1473 ifa_load(void) 1474 { 1475 struct ifaddrs *ifap, *ifa; 1476 struct node_host *n = NULL, *h = NULL; 1477 1478 if (getifaddrs(&ifap) < 0) 1479 err(1, "getifaddrs"); 1480 1481 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1482 if (ifa->ifa_addr == NULL || 1483 !(ifa->ifa_addr->sa_family == AF_INET || 1484 ifa->ifa_addr->sa_family == AF_INET6 || 1485 ifa->ifa_addr->sa_family == AF_LINK)) 1486 continue; 1487 n = calloc(1, sizeof(struct node_host)); 1488 if (n == NULL) 1489 err(1, "%s: calloc", __func__); 1490 n->af = ifa->ifa_addr->sa_family; 1491 n->ifa_flags = ifa->ifa_flags; 1492 #ifdef __KAME__ 1493 if (n->af == AF_INET6 && 1494 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1495 ifa->ifa_addr)->sin6_addr) && 1496 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1497 0) { 1498 struct sockaddr_in6 *sin6; 1499 1500 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1501 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1502 sin6->sin6_addr.s6_addr[3]; 1503 sin6->sin6_addr.s6_addr[2] = 0; 1504 sin6->sin6_addr.s6_addr[3] = 0; 1505 } 1506 #endif 1507 n->ifindex = 0; 1508 if (n->af == AF_LINK) { 1509 n->ifindex = ((struct sockaddr_dl *) 1510 ifa->ifa_addr)->sdl_index; 1511 ifa_add_groups_to_map(ifa->ifa_name); 1512 } else { 1513 copy_satopfaddr(&n->addr.v.a.addr, ifa->ifa_addr); 1514 ifa->ifa_netmask->sa_family = ifa->ifa_addr->sa_family; 1515 copy_satopfaddr(&n->addr.v.a.mask, ifa->ifa_netmask); 1516 if (ifa->ifa_broadaddr != NULL) { 1517 ifa->ifa_broadaddr->sa_family = ifa->ifa_addr->sa_family; 1518 copy_satopfaddr(&n->bcast, ifa->ifa_broadaddr); 1519 } 1520 if (ifa->ifa_dstaddr != NULL) { 1521 ifa->ifa_dstaddr->sa_family = ifa->ifa_addr->sa_family; 1522 copy_satopfaddr(&n->peer, ifa->ifa_dstaddr); 1523 } 1524 if (n->af == AF_INET6) 1525 n->ifindex = ((struct sockaddr_in6 *) 1526 ifa->ifa_addr) ->sin6_scope_id; 1527 } 1528 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1529 err(1, "%s: strdup", __func__); 1530 n->next = NULL; 1531 n->tail = n; 1532 if (h == NULL) 1533 h = n; 1534 else { 1535 h->tail->next = n; 1536 h->tail = n; 1537 } 1538 } 1539 1540 iftab = h; 1541 freeifaddrs(ifap); 1542 } 1543 1544 static int 1545 get_socket_domain(void) 1546 { 1547 int sdom; 1548 1549 sdom = AF_UNSPEC; 1550 #ifdef WITH_INET6 1551 if (sdom == AF_UNSPEC && feature_present("inet6")) 1552 sdom = AF_INET6; 1553 #endif 1554 #ifdef WITH_INET 1555 if (sdom == AF_UNSPEC && feature_present("inet")) 1556 sdom = AF_INET; 1557 #endif 1558 if (sdom == AF_UNSPEC) 1559 sdom = AF_LINK; 1560 1561 return (sdom); 1562 } 1563 1564 int 1565 get_query_socket(void) 1566 { 1567 static int s = -1; 1568 1569 if (s == -1) { 1570 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1571 err(1, "socket"); 1572 } 1573 1574 return (s); 1575 } 1576 1577 /* 1578 * Returns the response len if the name is a group, otherwise returns 0. 1579 */ 1580 static int 1581 is_a_group(char *name) 1582 { 1583 ENTRY item; 1584 ENTRY *ret_item; 1585 1586 item.key = name; 1587 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1588 return (0); 1589 1590 return (*(int *)ret_item->data); 1591 } 1592 1593 unsigned int 1594 ifa_nametoindex(const char *ifa_name) 1595 { 1596 struct node_host *p; 1597 1598 for (p = iftab; p; p = p->next) { 1599 if (p->af == AF_LINK && strcmp(p->ifname, ifa_name) == 0) 1600 return (p->ifindex); 1601 } 1602 errno = ENXIO; 1603 return (0); 1604 } 1605 1606 char * 1607 ifa_indextoname(unsigned int ifindex, char *ifa_name) 1608 { 1609 struct node_host *p; 1610 1611 for (p = iftab; p; p = p->next) { 1612 if (p->af == AF_LINK && ifindex == p->ifindex) { 1613 strlcpy(ifa_name, p->ifname, IFNAMSIZ); 1614 return (ifa_name); 1615 } 1616 } 1617 errno = ENXIO; 1618 return (NULL); 1619 } 1620 1621 struct node_host * 1622 ifa_exists(char *ifa_name) 1623 { 1624 struct node_host *n; 1625 1626 if (iftab == NULL) 1627 ifa_load(); 1628 1629 /* check whether this is a group */ 1630 if (is_a_group(ifa_name)) { 1631 /* fake a node_host */ 1632 if ((n = calloc(1, sizeof(*n))) == NULL) 1633 err(1, "calloc"); 1634 if ((n->ifname = strdup(ifa_name)) == NULL) 1635 err(1, "strdup"); 1636 return (n); 1637 } 1638 1639 for (n = iftab; n; n = n->next) { 1640 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1641 return (n); 1642 } 1643 1644 return (NULL); 1645 } 1646 1647 struct node_host * 1648 ifa_grouplookup(char *ifa_name, int flags) 1649 { 1650 struct ifg_req *ifg; 1651 struct ifgroupreq ifgr; 1652 int s, len; 1653 struct node_host *n, *h = NULL; 1654 1655 s = get_query_socket(); 1656 len = is_a_group(ifa_name); 1657 if (len == 0) 1658 return (NULL); 1659 bzero(&ifgr, sizeof(ifgr)); 1660 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1661 ifgr.ifgr_len = len; 1662 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1663 err(1, "calloc"); 1664 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1665 err(1, "SIOCGIFGMEMB"); 1666 1667 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1668 ifg++) { 1669 len -= sizeof(struct ifg_req); 1670 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1671 continue; 1672 if (h == NULL) 1673 h = n; 1674 else { 1675 h->tail->next = n; 1676 h->tail = n->tail; 1677 } 1678 } 1679 free(ifgr.ifgr_groups); 1680 1681 return (h); 1682 } 1683 1684 struct node_host * 1685 ifa_lookup(char *ifa_name, int flags) 1686 { 1687 struct node_host *p = NULL, *h = NULL, *n = NULL; 1688 int got4 = 0, got6 = 0; 1689 const char *last_if = NULL; 1690 1691 /* first load iftab and isgroup_map */ 1692 if (iftab == NULL) 1693 ifa_load(); 1694 1695 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1696 return (h); 1697 1698 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1699 ifa_name = NULL; 1700 1701 for (p = iftab; p; p = p->next) { 1702 if (ifa_skip_if(ifa_name, p)) 1703 continue; 1704 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1705 continue; 1706 if ((flags & PFI_AFLAG_BROADCAST) && 1707 !(p->ifa_flags & IFF_BROADCAST)) 1708 continue; 1709 if ((flags & PFI_AFLAG_BROADCAST) && p->bcast.v4.s_addr == 0) 1710 continue; 1711 if ((flags & PFI_AFLAG_PEER) && 1712 !(p->ifa_flags & IFF_POINTOPOINT)) 1713 continue; 1714 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1715 continue; 1716 if (last_if == NULL || strcmp(last_if, p->ifname)) 1717 got4 = got6 = 0; 1718 last_if = p->ifname; 1719 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1720 continue; 1721 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1722 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1723 continue; 1724 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1725 continue; 1726 if (p->af == AF_INET) 1727 got4 = 1; 1728 else 1729 got6 = 1; 1730 n = calloc(1, sizeof(struct node_host)); 1731 if (n == NULL) 1732 err(1, "%s: calloc", __func__); 1733 n->af = p->af; 1734 if (flags & PFI_AFLAG_BROADCAST) 1735 memcpy(&n->addr.v.a.addr, &p->bcast, 1736 sizeof(struct pf_addr)); 1737 else if (flags & PFI_AFLAG_PEER) 1738 memcpy(&n->addr.v.a.addr, &p->peer, 1739 sizeof(struct pf_addr)); 1740 else 1741 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1742 sizeof(struct pf_addr)); 1743 if (flags & PFI_AFLAG_NETWORK) 1744 set_ipmask(n, unmask(&p->addr.v.a.mask)); 1745 else 1746 set_ipmask(n, -1); 1747 n->ifindex = p->ifindex; 1748 n->ifname = strdup(p->ifname); 1749 1750 n->next = NULL; 1751 n->tail = n; 1752 if (h == NULL) 1753 h = n; 1754 else { 1755 h->tail->next = n; 1756 h->tail = n; 1757 } 1758 } 1759 return (h); 1760 } 1761 1762 int 1763 ifa_skip_if(const char *filter, struct node_host *p) 1764 { 1765 int n; 1766 1767 if (p->af != AF_INET && p->af != AF_INET6) 1768 return (1); 1769 if (filter == NULL || !*filter) 1770 return (0); 1771 if (!strcmp(p->ifname, filter)) 1772 return (0); /* exact match */ 1773 n = strlen(filter); 1774 if (n < 1 || n >= IFNAMSIZ) 1775 return (1); /* sanity check */ 1776 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1777 return (1); /* only do exact match in that case */ 1778 if (strncmp(p->ifname, filter, n)) 1779 return (1); /* prefix doesn't match */ 1780 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1781 } 1782 1783 1784 struct node_host * 1785 host(const char *s, int opts) 1786 { 1787 struct node_host *h = NULL; 1788 int mask = -1; 1789 char *p, *ps; 1790 const char *errstr; 1791 1792 if ((p = strchr(s, '/')) != NULL) { 1793 mask = strtonum(p+1, 0, 128, &errstr); 1794 if (errstr) { 1795 fprintf(stderr, "netmask is %s: %s\n", errstr, p); 1796 goto error; 1797 } 1798 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1799 err(1, "%s: malloc", __func__); 1800 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1801 } else { 1802 if ((ps = strdup(s)) == NULL) 1803 err(1, "%s: strdup", __func__); 1804 } 1805 1806 if ((h = host_ip(ps, mask)) == NULL && 1807 (h = host_if(ps, mask)) == NULL && 1808 (h = host_dns(ps, mask, (opts & PF_OPT_NODNS))) == NULL) { 1809 fprintf(stderr, "no IP address found for %s\n", s); 1810 goto error; 1811 } 1812 1813 error: 1814 free(ps); 1815 return (h); 1816 } 1817 1818 struct node_host * 1819 host_if(const char *s, int mask) 1820 { 1821 struct node_host *n, *h = NULL; 1822 char *p, *ps; 1823 int flags = 0; 1824 1825 if ((ps = strdup(s)) == NULL) 1826 err(1, "host_if: strdup"); 1827 while ((p = strrchr(ps, ':')) != NULL) { 1828 if (!strcmp(p+1, "network")) 1829 flags |= PFI_AFLAG_NETWORK; 1830 else if (!strcmp(p+1, "broadcast")) 1831 flags |= PFI_AFLAG_BROADCAST; 1832 else if (!strcmp(p+1, "peer")) 1833 flags |= PFI_AFLAG_PEER; 1834 else if (!strcmp(p+1, "0")) 1835 flags |= PFI_AFLAG_NOALIAS; 1836 else 1837 goto error; 1838 *p = '\0'; 1839 } 1840 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1841 fprintf(stderr, "illegal combination of interface modifiers\n"); 1842 goto error; 1843 } 1844 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1845 fprintf(stderr, "network or broadcast lookup, but " 1846 "extra netmask given\n"); 1847 goto error; 1848 } 1849 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1850 /* interface with this name exists */ 1851 h = ifa_lookup(ps, flags); 1852 if (mask > -1) 1853 for (n = h; n != NULL; n = n->next) 1854 set_ipmask(n, mask); 1855 } 1856 1857 error: 1858 free(ps); 1859 return (h); 1860 } 1861 1862 struct node_host * 1863 host_ip(const char *s, int mask) 1864 { 1865 struct addrinfo hints, *res; 1866 struct node_host *h = NULL; 1867 1868 h = calloc(1, sizeof(*h)); 1869 if (h == NULL) 1870 err(1, "%s: calloc", __func__); 1871 if (mask != -1) { 1872 /* Try to parse 10/8 */ 1873 h->af = AF_INET; 1874 if (inet_net_pton(AF_INET, s, &h->addr.v.a.addr.v4, 1875 sizeof(h->addr.v.a.addr.v4)) != -1) 1876 goto out; 1877 } 1878 1879 memset(&hints, 0, sizeof(hints)); 1880 hints.ai_family = AF_UNSPEC; 1881 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1882 hints.ai_flags = AI_NUMERICHOST; 1883 if (getaddrinfo(s, NULL, &hints, &res) == 0) { 1884 h->af = res->ai_family; 1885 copy_satopfaddr(&h->addr.v.a.addr, res->ai_addr); 1886 if (h->af == AF_INET6) 1887 h->ifindex = 1888 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1889 freeaddrinfo(res); 1890 } else { 1891 free(h); 1892 return (NULL); 1893 } 1894 out: 1895 set_ipmask(h, mask); 1896 h->ifname = NULL; 1897 h->next = NULL; 1898 h->tail = h; 1899 1900 return (h); 1901 } 1902 1903 struct node_host * 1904 host_dns(const char *s, int mask, int numeric) 1905 { 1906 struct addrinfo hints, *res0, *res; 1907 struct node_host *n, *h = NULL; 1908 int noalias = 0, got4 = 0, got6 = 0; 1909 char *p, *ps; 1910 1911 if ((ps = strdup(s)) == NULL) 1912 err(1, "host_dns: strdup"); 1913 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1914 noalias = 1; 1915 *p = '\0'; 1916 } 1917 memset(&hints, 0, sizeof(hints)); 1918 hints.ai_family = PF_UNSPEC; 1919 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1920 if (numeric) 1921 hints.ai_flags = AI_NUMERICHOST; 1922 if (getaddrinfo(ps, NULL, &hints, &res0) != 0) 1923 goto error; 1924 1925 for (res = res0; res; res = res->ai_next) { 1926 if (res->ai_family != AF_INET && 1927 res->ai_family != AF_INET6) 1928 continue; 1929 if (noalias) { 1930 if (res->ai_family == AF_INET) { 1931 if (got4) 1932 continue; 1933 got4 = 1; 1934 } else { 1935 if (got6) 1936 continue; 1937 got6 = 1; 1938 } 1939 } 1940 n = calloc(1, sizeof(struct node_host)); 1941 if (n == NULL) 1942 err(1, "host_dns: calloc"); 1943 n->ifname = NULL; 1944 n->af = res->ai_family; 1945 copy_satopfaddr(&n->addr.v.a.addr, res->ai_addr); 1946 if (res->ai_family == AF_INET6) 1947 n->ifindex = 1948 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1949 set_ipmask(n, mask); 1950 n->next = NULL; 1951 n->tail = n; 1952 if (h == NULL) 1953 h = n; 1954 else { 1955 h->tail->next = n; 1956 h->tail = n; 1957 } 1958 } 1959 freeaddrinfo(res0); 1960 error: 1961 free(ps); 1962 1963 return (h); 1964 } 1965 1966 /* 1967 * convert a hostname to a list of addresses and put them in the given buffer. 1968 * test: 1969 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1970 */ 1971 int 1972 append_addr(struct pfr_buffer *b, char *s, int test, int opts) 1973 { 1974 char *r; 1975 struct node_host *h, *n; 1976 int rv, not = 0; 1977 1978 for (r = s; *r == '!'; r++) 1979 not = !not; 1980 if ((n = host(r, opts)) == NULL) { 1981 errno = 0; 1982 return (-1); 1983 } 1984 rv = append_addr_host(b, n, test, not); 1985 do { 1986 h = n; 1987 n = n->next; 1988 free(h); 1989 } while (n != NULL); 1990 return (rv); 1991 } 1992 1993 /* 1994 * same as previous function, but with a pre-parsed input and the ability 1995 * to "negate" the result. Does not free the node_host list. 1996 * not: 1997 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1998 */ 1999 int 2000 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 2001 { 2002 int bits; 2003 struct pfr_addr addr; 2004 2005 do { 2006 bzero(&addr, sizeof(addr)); 2007 addr.pfra_not = n->not ^ not; 2008 addr.pfra_af = n->af; 2009 addr.pfra_net = unmask(&n->addr.v.a.mask); 2010 switch (n->af) { 2011 case AF_INET: 2012 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 2013 bits = 32; 2014 break; 2015 case AF_INET6: 2016 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 2017 sizeof(struct in6_addr)); 2018 bits = 128; 2019 break; 2020 default: 2021 errno = EINVAL; 2022 return (-1); 2023 } 2024 if ((test && (not || addr.pfra_net != bits)) || 2025 addr.pfra_net > bits) { 2026 errno = EINVAL; 2027 return (-1); 2028 } 2029 if (pfr_buf_add(b, &addr)) 2030 return (-1); 2031 } while ((n = n->next) != NULL); 2032 2033 return (0); 2034 } 2035 2036 int 2037 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 2038 { 2039 struct pfioc_trans_e trans; 2040 2041 bzero(&trans, sizeof(trans)); 2042 trans.rs_num = rs_num; 2043 if (strlcpy(trans.anchor, anchor, 2044 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 2045 errx(1, "pfctl_add_trans: strlcpy"); 2046 2047 return pfr_buf_add(buf, &trans); 2048 } 2049 2050 u_int32_t 2051 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 2052 { 2053 struct pfioc_trans_e *p; 2054 2055 PFRB_FOREACH(p, buf) 2056 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 2057 return (p->ticket); 2058 errx(1, "pfctl_get_ticket: assertion failed"); 2059 } 2060 2061 int 2062 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 2063 { 2064 struct pfioc_trans trans; 2065 2066 bzero(&trans, sizeof(trans)); 2067 trans.size = buf->pfrb_size - from; 2068 trans.esize = sizeof(struct pfioc_trans_e); 2069 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 2070 return ioctl(dev, cmd, &trans); 2071 } 2072