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 size_t 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 size_t 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 size_t 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 size_t 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 opts, int numeric) 393 { 394 char buf[PF_OSFP_LEN*3]; 395 int verbose = opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG); 396 397 if (src->addr.type == PF_ADDR_ADDRMASK && 398 dst->addr.type == PF_ADDR_ADDRMASK && 399 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 400 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 401 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 402 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 403 !src->neg && !dst->neg && 404 !src->port_op && !dst->port_op && 405 osfp == PF_OSFP_ANY) 406 printf(" all"); 407 else { 408 printf(" from "); 409 if (src->neg) 410 printf("! "); 411 print_addr(&src->addr, af, verbose); 412 if (src->port_op) 413 print_port(src->port_op, src->port[0], 414 src->port[1], 415 proto == IPPROTO_TCP ? "tcp" : "udp", 416 numeric); 417 if (osfp != PF_OSFP_ANY) 418 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 419 sizeof(buf))); 420 421 printf(" to "); 422 if (dst->neg) 423 printf("! "); 424 print_addr(&dst->addr, af, verbose); 425 if (dst->port_op) 426 print_port(dst->port_op, dst->port[0], 427 dst->port[1], 428 proto == IPPROTO_TCP ? "tcp" : "udp", 429 numeric); 430 } 431 } 432 433 void 434 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2, int id) 435 { 436 struct pfctl_pooladdr *pooladdr; 437 438 if ((TAILQ_FIRST(&pool->list) != NULL) && 439 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 440 printf("{ "); 441 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 442 switch (id) { 443 case PF_NAT: 444 case PF_RDR: 445 case PF_BINAT: 446 print_addr(&pooladdr->addr, pooladdr->af, 0); 447 break; 448 case PF_PASS: 449 case PF_MATCH: 450 if (PF_AZERO(&pooladdr->addr.v.a.addr, pooladdr->af)) 451 printf("%s", pooladdr->ifname); 452 else { 453 printf("(%s ", pooladdr->ifname); 454 print_addr(&pooladdr->addr, pooladdr->af, 0); 455 printf(")"); 456 } 457 break; 458 default: 459 break; 460 } 461 if (TAILQ_NEXT(pooladdr, entries) != NULL) 462 printf(", "); 463 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 464 printf(" }"); 465 } 466 switch (id) { 467 case PF_NAT: 468 if ((p1 != PF_NAT_PROXY_PORT_LOW || 469 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 470 if (p1 == p2) 471 printf(" port %u", p1); 472 else 473 printf(" port %u:%u", p1, p2); 474 } 475 break; 476 case PF_RDR: 477 if (p1) { 478 printf(" port %u", p1); 479 if (p2 && (p2 != p1)) 480 printf(":%u", p2); 481 } 482 break; 483 default: 484 break; 485 } 486 switch (pool->opts & PF_POOL_TYPEMASK) { 487 case PF_POOL_NONE: 488 break; 489 case PF_POOL_BITMASK: 490 printf(" bitmask"); 491 break; 492 case PF_POOL_RANDOM: 493 printf(" random"); 494 break; 495 case PF_POOL_SRCHASH: 496 printf(" source-hash 0x%08x%08x%08x%08x", 497 pool->key.key32[0], pool->key.key32[1], 498 pool->key.key32[2], pool->key.key32[3]); 499 break; 500 case PF_POOL_ROUNDROBIN: 501 printf(" round-robin"); 502 break; 503 } 504 if (pool->opts & PF_POOL_STICKYADDR) 505 printf(" sticky-address"); 506 if (pool->opts & PF_POOL_ENDPI) 507 printf(" endpoint-independent"); 508 if (id == PF_NAT && p1 == 0 && p2 == 0) 509 printf(" static-port"); 510 if (pool->mape.offset > 0) 511 printf(" map-e-portset %u/%u/%u", 512 pool->mape.offset, pool->mape.psidlen, pool->mape.psid); 513 if (pool->opts & PF_POOL_IPV6NH) 514 printf(" prefer-ipv6-nexthop"); 515 } 516 517 void 518 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts) 519 { 520 struct pfctl_status_counter *c; 521 char statline[80], *running; 522 time_t runtime; 523 int i; 524 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 525 static const char hex[] = "0123456789abcdef"; 526 527 runtime = time(NULL) - s->since; 528 running = s->running ? "Enabled" : "Disabled"; 529 530 if (s->since) { 531 unsigned int sec, min, hrs; 532 time_t day = runtime; 533 534 sec = day % 60; 535 day /= 60; 536 min = day % 60; 537 day /= 60; 538 hrs = day % 24; 539 day /= 24; 540 snprintf(statline, sizeof(statline), 541 "Status: %s for %lld days %.2u:%.2u:%.2u", 542 running, (long long)day, hrs, min, sec); 543 } else 544 snprintf(statline, sizeof(statline), "Status: %s", running); 545 printf("%-44s", statline); 546 switch (s->debug) { 547 case PF_DEBUG_NONE: 548 printf("%15s\n\n", "Debug: None"); 549 break; 550 case PF_DEBUG_URGENT: 551 printf("%15s\n\n", "Debug: Urgent"); 552 break; 553 case PF_DEBUG_MISC: 554 printf("%15s\n\n", "Debug: Misc"); 555 break; 556 case PF_DEBUG_NOISY: 557 printf("%15s\n\n", "Debug: Loud"); 558 break; 559 } 560 561 if (opts & PF_OPT_VERBOSE) { 562 printf("Hostid: 0x%08x\n", s->hostid); 563 564 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 565 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 566 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 567 } 568 buf[i + i] = '\0'; 569 printf("Checksum: 0x%s\n\n", buf); 570 } 571 572 if (s->ifname[0] != 0) { 573 printf("Interface Stats for %-16s %5s %16s\n", 574 s->ifname, "IPv4", "IPv6"); 575 printf(" %-25s %14llu %16llu\n", "Bytes In", 576 (unsigned long long)s->bcounters[0][0], 577 (unsigned long long)s->bcounters[1][0]); 578 printf(" %-25s %14llu %16llu\n", "Bytes Out", 579 (unsigned long long)s->bcounters[0][1], 580 (unsigned long long)s->bcounters[1][1]); 581 printf(" Packets In\n"); 582 printf(" %-23s %14llu %16llu\n", "Passed", 583 (unsigned long long)s->pcounters[0][0][PF_PASS], 584 (unsigned long long)s->pcounters[1][0][PF_PASS]); 585 printf(" %-23s %14llu %16llu\n", "Blocked", 586 (unsigned long long)s->pcounters[0][0][PF_DROP], 587 (unsigned long long)s->pcounters[1][0][PF_DROP]); 588 printf(" Packets Out\n"); 589 printf(" %-23s %14llu %16llu\n", "Passed", 590 (unsigned long long)s->pcounters[0][1][PF_PASS], 591 (unsigned long long)s->pcounters[1][1][PF_PASS]); 592 printf(" %-23s %14llu %16llu\n\n", "Blocked", 593 (unsigned long long)s->pcounters[0][1][PF_DROP], 594 (unsigned long long)s->pcounters[1][1][PF_DROP]); 595 } 596 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 597 printf(" %-25s %14ju %14s\n", "current entries", s->states, ""); 598 TAILQ_FOREACH(c, &s->fcounters, entry) { 599 printf(" %-25s %14ju ", c->name, c->counter); 600 if (runtime > 0) 601 printf("%14.1f/s\n", 602 (double)c->counter / (double)runtime); 603 else 604 printf("%14s\n", ""); 605 } 606 if (opts & PF_OPT_VERBOSE) { 607 printf("Source Tracking Table\n"); 608 printf(" %-25s %14ju %14s\n", "current entries", 609 s->src_nodes, ""); 610 TAILQ_FOREACH(c, &s->scounters, entry) { 611 printf(" %-25s %14ju ", c->name, c->counter); 612 if (runtime > 0) 613 printf("%14.1f/s\n", 614 (double)c->counter / (double)runtime); 615 else 616 printf("%14s\n", ""); 617 } 618 } 619 if (opts & PF_OPT_VERBOSE) { 620 printf("Fragments\n"); 621 printf(" %-25s %14ju %14s\n", "current entries", 622 s->fragments, ""); 623 TAILQ_FOREACH(c, &s->ncounters, entry) { 624 printf(" %-25s %14ju ", c->name, 625 c->counter); 626 if (runtime > 0) 627 printf("%14.1f/s\n", 628 (double)c->counter / (double)runtime); 629 else 630 printf("%14s\n", ""); 631 } 632 } 633 printf("Counters\n"); 634 TAILQ_FOREACH(c, &s->counters, entry) { 635 printf(" %-25s %14ju ", c->name, c->counter); 636 if (runtime > 0) 637 printf("%14.1f/s\n", 638 (double)c->counter / (double)runtime); 639 else 640 printf("%14s\n", ""); 641 } 642 if (opts & PF_OPT_VERBOSE) { 643 printf("Limit Counters\n"); 644 TAILQ_FOREACH(c, &s->lcounters, entry) { 645 printf(" %-25s %14ju ", c->name, c->counter); 646 if (runtime > 0) 647 printf("%14.1f/s\n", 648 (double)c->counter / (double)runtime); 649 else 650 printf("%14s\n", ""); 651 } 652 653 printf("Syncookies\n"); 654 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE); 655 printf(" %-25s %s\n", "mode", 656 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]); 657 printf(" %-25s %s\n", "active", 658 s->syncookies_active ? "active" : "inactive"); 659 if (opts & PF_OPT_VERBOSE2) { 660 printf(" %-25s %d %%\n", "highwater", cookies->highwater); 661 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater); 662 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states); 663 } 664 printf("Reassemble %24s %s\n", 665 s->reass & PF_REASS_ENABLED ? "yes" : "no", 666 s->reass & PF_REASS_NODF ? "no-df" : "" 667 ); 668 } 669 } 670 671 void 672 print_running(struct pfctl_status *status) 673 { 674 printf("%s\n", status->running ? "Enabled" : "Disabled"); 675 } 676 677 void 678 print_src_node(struct pfctl_src_node *sn, int opts) 679 { 680 struct pf_addr_wrap aw; 681 uint64_t min, sec; 682 const char *sn_type_names[] = PF_SN_TYPE_NAMES; 683 684 memset(&aw, 0, sizeof(aw)); 685 if (sn->af == AF_INET) 686 aw.v.a.mask.addr32[0] = 0xffffffff; 687 else 688 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 689 690 aw.v.a.addr = sn->addr; 691 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 692 printf(" -> "); 693 aw.v.a.addr = sn->raddr; 694 print_addr(&aw, sn->raf, opts & PF_OPT_VERBOSE2); 695 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 696 sn->conn, sn->conn_rate.count / 1000, 697 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 698 if (opts & PF_OPT_VERBOSE) { 699 sec = sn->creation % 60; 700 sn->creation /= 60; 701 min = sn->creation % 60; 702 sn->creation /= 60; 703 printf(" age %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64, 704 sn->creation, min, sec); 705 if (sn->states == 0) { 706 sec = sn->expire % 60; 707 sn->expire /= 60; 708 min = sn->expire % 60; 709 sn->expire /= 60; 710 printf(", expires in %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64, 711 sn->expire, min, sec); 712 } 713 printf(", %" PRIu64 " pkts, %" PRIu64 " bytes", 714 sn->packets[0] + sn->packets[1], 715 sn->bytes[0] + sn->bytes[1]); 716 switch (sn->ruletype) { 717 case PF_NAT: 718 if (sn->rule != -1) 719 printf(", nat rule %u", sn->rule); 720 break; 721 case PF_RDR: 722 if (sn->rule != -1) 723 printf(", rdr rule %u", sn->rule); 724 break; 725 case PF_PASS: 726 case PF_MATCH: 727 if (sn->rule != -1) 728 printf(", filter rule %u", sn->rule); 729 break; 730 } 731 printf(", %s", sn_type_names[sn->type]); 732 printf("\n"); 733 } 734 } 735 736 static void 737 print_eth_addr(const struct pfctl_eth_addr *a) 738 { 739 int i, masklen = ETHER_ADDR_LEN * 8; 740 bool seen_unset = false; 741 742 for (i = 0; i < ETHER_ADDR_LEN; i++) { 743 if (a->addr[i] != 0) 744 break; 745 } 746 747 /* Unset, so don't print anything. */ 748 if (i == ETHER_ADDR_LEN) 749 return; 750 751 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "", 752 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4], 753 a->addr[5]); 754 755 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) { 756 bool isset = a->mask[i / 8] & (1 << i % 8); 757 758 if (! seen_unset) { 759 if (isset) 760 continue; 761 seen_unset = true; 762 masklen = i; 763 } else { 764 /* Not actually a continuous mask, so print the whole 765 * thing. */ 766 if (isset) 767 break; 768 continue; 769 } 770 } 771 772 if (masklen == (ETHER_ADDR_LEN * 8)) 773 return; 774 775 if (i == (ETHER_ADDR_LEN * 8)) { 776 printf("/%d", masklen); 777 return; 778 } 779 780 printf("&%02x:%02x:%02x:%02x:%02x:%02x", 781 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4], 782 a->mask[5]); 783 } 784 785 void 786 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call, 787 int rule_numbers) 788 { 789 static const char *actiontypes[] = { "pass", "block", "", "", "", "", 790 "", "", "", "", "", "", "match" }; 791 792 int i; 793 794 if (rule_numbers) 795 printf("@%u ", r->nr); 796 797 printf("ether "); 798 if (anchor_call[0]) { 799 if (anchor_call[0] == '_') { 800 printf("anchor"); 801 } else 802 printf("anchor \"%s\"", anchor_call); 803 } else { 804 printf("%s", actiontypes[r->action]); 805 } 806 if (r->direction == PF_IN) 807 printf(" in"); 808 else if (r->direction == PF_OUT) 809 printf(" out"); 810 811 if (r->quick) 812 printf(" quick"); 813 if (r->ifname[0]) { 814 if (r->ifnot) 815 printf(" on ! %s", r->ifname); 816 else 817 printf(" on %s", r->ifname); 818 } 819 if (r->bridge_to[0]) 820 printf(" bridge-to %s", r->bridge_to); 821 if (r->proto) 822 printf(" proto 0x%04x", r->proto); 823 824 if (r->src.isset) { 825 printf(" from "); 826 print_eth_addr(&r->src); 827 } 828 if (r->dst.isset) { 829 printf(" to "); 830 print_eth_addr(&r->dst); 831 } 832 printf(" l3"); 833 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst, 834 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0, 835 0, 0); 836 837 i = 0; 838 while (r->label[i][0]) 839 printf(" label \"%s\"", r->label[i++]); 840 if (r->ridentifier) 841 printf(" ridentifier %u", r->ridentifier); 842 843 if (r->qname[0]) 844 printf(" queue %s", r->qname); 845 if (r->tagname[0]) 846 printf(" tag %s", r->tagname); 847 if (r->match_tagname[0]) { 848 if (r->match_tag_not) 849 printf(" !"); 850 printf(" tagged %s", r->match_tagname); 851 } 852 if (r->dnpipe) 853 printf(" %s %d", 854 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 855 r->dnpipe); 856 } 857 858 void 859 print_rule(struct pfctl_rule *r, const char *anchor_call, int opts, int numeric) 860 { 861 static const char *actiontypes[] = { "pass", "block", "scrub", 862 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr", 863 "synproxy drop", "defer", "match", "af-rt", "route-to" }; 864 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 865 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 866 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 867 int i, ropts; 868 int verbose = opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG); 869 char *p; 870 871 if ((r->rule_flag & PFRULE_EXPIRED) && (!verbose)) 872 return; 873 874 if (verbose) 875 printf("@%d ", r->nr); 876 if (anchor_call[0]) { 877 if (r->action >= nitems(anchortypes)) { 878 printf("anchor(%d)", r->action); 879 } else { 880 p = strrchr(anchor_call, '/'); 881 if (p ? p[1] == '_' : anchor_call[0] == '_') 882 printf("%s", anchortypes[r->action]); 883 else 884 printf("%s \"%s\"", anchortypes[r->action], 885 anchor_call); 886 } 887 } else { 888 if (r->action >= nitems(actiontypes)) 889 printf("action(%d)", r->action); 890 else 891 printf("%s", actiontypes[r->action]); 892 } 893 if (r->action == PF_DROP) { 894 if (r->rule_flag & PFRULE_RETURN) 895 printf(" return"); 896 else if (r->rule_flag & PFRULE_RETURNRST) { 897 if (!r->return_ttl) 898 printf(" return-rst"); 899 else 900 printf(" return-rst(ttl %d)", r->return_ttl); 901 } else if (r->rule_flag & PFRULE_RETURNICMP) { 902 const struct icmpcodeent *ic, *ic6; 903 904 ic = geticmpcodebynumber(r->return_icmp >> 8, 905 r->return_icmp & 255, AF_INET); 906 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 907 r->return_icmp6 & 255, AF_INET6); 908 909 switch (r->af) { 910 case AF_INET: 911 printf(" return-icmp"); 912 if (ic == NULL) 913 printf("(%u)", r->return_icmp & 255); 914 else 915 printf("(%s)", ic->name); 916 break; 917 case AF_INET6: 918 printf(" return-icmp6"); 919 if (ic6 == NULL) 920 printf("(%u)", r->return_icmp6 & 255); 921 else 922 printf("(%s)", ic6->name); 923 break; 924 default: 925 printf(" return-icmp"); 926 if (ic == NULL) 927 printf("(%u, ", r->return_icmp & 255); 928 else 929 printf("(%s, ", ic->name); 930 if (ic6 == NULL) 931 printf("%u)", r->return_icmp6 & 255); 932 else 933 printf("%s)", ic6->name); 934 break; 935 } 936 } else 937 printf(" drop"); 938 } 939 if (r->direction == PF_IN) 940 printf(" in"); 941 else if (r->direction == PF_OUT) 942 printf(" out"); 943 if (r->log) { 944 printf(" log"); 945 if (r->log & ~PF_LOG || r->logif) { 946 int count = 0; 947 948 printf(" ("); 949 if (r->log & PF_LOG_ALL) 950 printf("%sall", count++ ? ", " : ""); 951 if (r->log & PF_LOG_MATCHES) 952 printf("%smatches", count++ ? ", " : ""); 953 if (r->log & PF_LOG_USER) 954 printf("%suser", count++ ? ", " : ""); 955 if (r->logif) 956 printf("%sto pflog%u", count++ ? ", " : "", 957 r->logif); 958 printf(")"); 959 } 960 } 961 if (r->quick) 962 printf(" quick"); 963 if (r->ifname[0]) { 964 if (r->ifnot) 965 printf(" on ! %s", r->ifname); 966 else 967 printf(" on %s", r->ifname); 968 } 969 if (r->rt) { 970 if (r->rt == PF_ROUTETO) 971 printf(" route-to"); 972 else if (r->rt == PF_REPLYTO) 973 printf(" reply-to"); 974 else if (r->rt == PF_DUPTO) 975 printf(" dup-to"); 976 printf(" "); 977 print_pool(&r->route, 0, 0, PF_PASS); 978 } 979 if (r->af) { 980 if (r->af == AF_INET) 981 printf(" inet"); 982 else 983 printf(" inet6"); 984 } 985 if (r->proto) { 986 const char *protoname; 987 988 if ((protoname = pfctl_proto2name(r->proto)) != NULL) 989 printf(" proto %s", protoname); 990 else 991 printf(" proto %u", r->proto); 992 } 993 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 994 opts, numeric); 995 if (r->rcv_ifname[0]) 996 printf(" %sreceived-on %s", r->rcvifnot ? "!" : "", 997 r->rcv_ifname); 998 if (r->uid.op) 999 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user"); 1000 if (r->gid.op) 1001 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group"); 1002 if (r->flags || r->flagset) { 1003 printf(" flags "); 1004 print_flags(r->flags); 1005 printf("/"); 1006 print_flags(r->flagset); 1007 } else if ((r->action == PF_PASS || r->action == PF_MATCH) && 1008 (!r->proto || r->proto == IPPROTO_TCP) && 1009 !(r->rule_flag & PFRULE_FRAGMENT) && 1010 !anchor_call[0] && r->keep_state) 1011 printf(" flags any"); 1012 if (r->type) { 1013 const struct icmptypeent *it; 1014 1015 it = geticmptypebynumber(r->type-1, r->af); 1016 if (r->af != AF_INET6) 1017 printf(" icmp-type"); 1018 else 1019 printf(" icmp6-type"); 1020 if (it != NULL) 1021 printf(" %s", it->name); 1022 else 1023 printf(" %u", r->type-1); 1024 if (r->code) { 1025 const struct icmpcodeent *ic; 1026 1027 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 1028 if (ic != NULL) 1029 printf(" code %s", ic->name); 1030 else 1031 printf(" code %u", r->code-1); 1032 } 1033 } 1034 if (r->tos) 1035 printf(" tos 0x%2.2x", r->tos); 1036 if (r->prio) 1037 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 1038 if (r->pktrate.limit) 1039 printf(" max-pkt-rate %u/%u", r->pktrate.limit, 1040 r->pktrate.seconds); 1041 if (r->max_pkt_size) 1042 printf( " max-pkt-size %u", r->max_pkt_size); 1043 if (r->scrub_flags & PFSTATE_SETMASK) { 1044 char *comma = ""; 1045 printf(" set ("); 1046 if (r->scrub_flags & PFSTATE_SETPRIO) { 1047 if (r->set_prio[0] == r->set_prio[1]) 1048 printf("%s prio %u", comma, r->set_prio[0]); 1049 else 1050 printf("%s prio(%u, %u)", comma, r->set_prio[0], 1051 r->set_prio[1]); 1052 comma = ","; 1053 } 1054 if (r->scrub_flags & PFSTATE_SETTOS) { 1055 printf("%s tos 0x%2.2x", comma, r->set_tos); 1056 comma = ","; 1057 } 1058 printf(" )"); 1059 } 1060 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 1061 printf(" no state"); 1062 else if (r->keep_state == PF_STATE_NORMAL) 1063 printf(" keep state"); 1064 else if (r->keep_state == PF_STATE_MODULATE) 1065 printf(" modulate state"); 1066 else if (r->keep_state == PF_STATE_SYNPROXY) 1067 printf(" synproxy state"); 1068 if (r->prob) { 1069 char buf[20]; 1070 1071 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 1072 for (i = strlen(buf)-1; i > 0; i--) { 1073 if (buf[i] == '0') 1074 buf[i] = '\0'; 1075 else { 1076 if (buf[i] == '.') 1077 buf[i] = '\0'; 1078 break; 1079 } 1080 } 1081 printf(" probability %s%%", buf); 1082 } 1083 ropts = 0; 1084 if (r->max_states || r->max_src_nodes || r->max_src_states) 1085 ropts = 1; 1086 if (r->rule_flag & PFRULE_NOSYNC) 1087 ropts = 1; 1088 if (r->rule_flag & PFRULE_SRCTRACK) 1089 ropts = 1; 1090 if (r->rule_flag & PFRULE_IFBOUND) 1091 ropts = 1; 1092 if (r->rule_flag & PFRULE_STATESLOPPY) 1093 ropts = 1; 1094 if (r->rule_flag & PFRULE_PFLOW) 1095 ropts = 1; 1096 for (i = 0; !ropts && i < PFTM_MAX; ++i) 1097 if (r->timeout[i]) 1098 ropts = 1; 1099 if (ropts) { 1100 printf(" ("); 1101 if (r->max_states) { 1102 printf("max %u", r->max_states); 1103 ropts = 0; 1104 } 1105 if (r->rule_flag & PFRULE_NOSYNC) { 1106 if (!ropts) 1107 printf(", "); 1108 printf("no-sync"); 1109 ropts = 0; 1110 } 1111 if (r->rule_flag & PFRULE_SRCTRACK) { 1112 if (!ropts) 1113 printf(", "); 1114 printf("source-track"); 1115 if (r->rule_flag & PFRULE_RULESRCTRACK) 1116 printf(" rule"); 1117 else 1118 printf(" global"); 1119 ropts = 0; 1120 } 1121 if (r->max_src_states) { 1122 if (!ropts) 1123 printf(", "); 1124 printf("max-src-states %u", r->max_src_states); 1125 ropts = 0; 1126 } 1127 if (r->max_src_conn) { 1128 if (!ropts) 1129 printf(", "); 1130 printf("max-src-conn %u", r->max_src_conn); 1131 ropts = 0; 1132 } 1133 if (r->max_src_conn_rate.limit) { 1134 if (!ropts) 1135 printf(", "); 1136 printf("max-src-conn-rate %u/%u", 1137 r->max_src_conn_rate.limit, 1138 r->max_src_conn_rate.seconds); 1139 ropts = 0; 1140 } 1141 if (r->max_src_nodes) { 1142 if (!ropts) 1143 printf(", "); 1144 printf("max-src-nodes %u", r->max_src_nodes); 1145 ropts = 0; 1146 } 1147 if (r->overload_tblname[0]) { 1148 if (!ropts) 1149 printf(", "); 1150 printf("overload <%s>", r->overload_tblname); 1151 if (r->flush) 1152 printf(" flush"); 1153 if (r->flush & PF_FLUSH_GLOBAL) 1154 printf(" global"); 1155 } 1156 if (r->rule_flag & PFRULE_IFBOUND) { 1157 if (!ropts) 1158 printf(", "); 1159 printf("if-bound"); 1160 ropts = 0; 1161 } 1162 if (r->rule_flag & PFRULE_STATESLOPPY) { 1163 if (!ropts) 1164 printf(", "); 1165 printf("sloppy"); 1166 ropts = 0; 1167 } 1168 if (r->rule_flag & PFRULE_PFLOW) { 1169 if (!ropts) 1170 printf(", "); 1171 printf("pflow"); 1172 ropts = 0; 1173 } 1174 for (i = 0; i < PFTM_MAX; ++i) 1175 if (r->timeout[i]) { 1176 int j; 1177 1178 if (!ropts) 1179 printf(", "); 1180 ropts = 0; 1181 for (j = 0; pf_timeouts[j].name != NULL; 1182 ++j) 1183 if (pf_timeouts[j].timeout == i) 1184 break; 1185 printf("%s %u", pf_timeouts[j].name == NULL ? 1186 "inv.timeout" : pf_timeouts[j].name, 1187 r->timeout[i]); 1188 } 1189 printf(")"); 1190 } 1191 if (r->allow_opts) 1192 printf(" allow-opts"); 1193 if (r->rule_flag & PFRULE_FRAGMENT) 1194 printf(" fragment"); 1195 if (r->action == PF_SCRUB) { 1196 /* Scrub flags for old-style scrub. */ 1197 if (r->rule_flag & PFRULE_NODF) 1198 printf(" no-df"); 1199 if (r->rule_flag & PFRULE_RANDOMID) 1200 printf(" random-id"); 1201 if (r->min_ttl) 1202 printf(" min-ttl %d", r->min_ttl); 1203 if (r->max_mss) 1204 printf(" max-mss %d", r->max_mss); 1205 if (r->rule_flag & PFRULE_SET_TOS) 1206 printf(" set-tos 0x%2.2x", r->set_tos); 1207 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1208 printf(" reassemble tcp"); 1209 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */ 1210 printf(" fragment %sreassemble", 1211 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : ""); 1212 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) { 1213 /* Scrub actions on normal rules. */ 1214 printf(" scrub("); 1215 if (r->scrub_flags & PFSTATE_NODF) 1216 printf(" no-df"); 1217 if (r->scrub_flags & PFSTATE_RANDOMID) 1218 printf(" random-id"); 1219 if (r->min_ttl) 1220 printf(" min-ttl %d", r->min_ttl); 1221 if (r->scrub_flags & PFSTATE_SETTOS) 1222 printf(" set-tos 0x%2.2x", r->set_tos); 1223 if (r->scrub_flags & PFSTATE_SCRUB_TCP) 1224 printf(" reassemble tcp"); 1225 if (r->max_mss) 1226 printf(" max-mss %d", r->max_mss); 1227 printf(")"); 1228 } 1229 i = 0; 1230 while (r->label[i][0]) 1231 printf(" label \"%s\"", r->label[i++]); 1232 if (r->ridentifier) 1233 printf(" ridentifier %u", r->ridentifier); 1234 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */ 1235 if (r->dnrpipe) 1236 printf(" %s(%d, %d)", 1237 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1238 r->dnpipe, r->dnrpipe); 1239 else if (r->dnpipe) 1240 printf(" %s %d", 1241 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1242 r->dnpipe); 1243 if (r->rule_flag & PFRULE_ONCE) 1244 printf(" once"); 1245 if (r->qname[0] && r->pqname[0]) 1246 printf(" queue(%s, %s)", r->qname, r->pqname); 1247 else if (r->qname[0]) 1248 printf(" queue %s", r->qname); 1249 if (r->tagname[0]) 1250 printf(" tag %s", r->tagname); 1251 if (r->match_tagname[0]) { 1252 if (r->match_tag_not) 1253 printf(" !"); 1254 printf(" tagged %s", r->match_tagname); 1255 } 1256 if (r->rtableid != -1) 1257 printf(" rtable %u", r->rtableid); 1258 if (r->divert.port) { 1259 #ifdef __FreeBSD__ 1260 printf(" divert-to %u", ntohs(r->divert.port)); 1261 #else 1262 if (PF_AZERO(&r->divert.addr, r->af)) { 1263 printf(" divert-reply"); 1264 } else { 1265 printf(" divert-to "); 1266 print_addr_str(r->af, &r->divert.addr); 1267 printf(" port %u", ntohs(r->divert.port)); 1268 } 1269 #endif 1270 } 1271 if (anchor_call[0]) 1272 return; 1273 if (r->action == PF_NAT || r->action == PF_BINAT || r->action == PF_RDR) { 1274 printf(" -> "); 1275 print_pool(&r->rdr, r->rdr.proxy_port[0], 1276 r->rdr.proxy_port[1], r->action); 1277 } else { 1278 if (!TAILQ_EMPTY(&r->nat.list)) { 1279 if (r->rule_flag & PFRULE_AFTO) { 1280 printf(" af-to %s from ", r->naf == AF_INET ? "inet" : (r->naf == AF_INET6 ? "inet6" : "? ")); 1281 } else { 1282 printf(" nat-to "); 1283 } 1284 print_pool(&r->nat, r->nat.proxy_port[0], 1285 r->nat.proxy_port[1], PF_NAT); 1286 } 1287 if (!TAILQ_EMPTY(&r->rdr.list)) { 1288 if (r->rule_flag & PFRULE_AFTO) { 1289 printf(" to "); 1290 } else { 1291 printf(" rdr-to "); 1292 } 1293 print_pool(&r->rdr, r->rdr.proxy_port[0], 1294 r->rdr.proxy_port[1], PF_RDR); 1295 } 1296 } 1297 1298 if (r->rule_flag & PFRULE_EXPIRED) { 1299 printf(" # expired"); 1300 1301 if (r->exptime != 0) 1302 printf(" %s", ctime(&r->exptime)); 1303 } 1304 } 1305 1306 void 1307 print_tabledef(const char *name, int flags, int addrs, 1308 struct node_tinithead *nodes) 1309 { 1310 struct node_tinit *ti, *nti; 1311 struct node_host *h; 1312 1313 printf("table <%s>", name); 1314 if (flags & PFR_TFLAG_CONST) 1315 printf(" const"); 1316 if (flags & PFR_TFLAG_PERSIST) 1317 printf(" persist"); 1318 if (flags & PFR_TFLAG_COUNTERS) 1319 printf(" counters"); 1320 SIMPLEQ_FOREACH(ti, nodes, entries) { 1321 if (ti->file) { 1322 printf(" file \"%s\"", ti->file); 1323 continue; 1324 } 1325 printf(" {"); 1326 for (;;) { 1327 for (h = ti->host; h != NULL; h = h->next) { 1328 printf(h->not ? " !" : " "); 1329 print_addr(&h->addr, h->af, 0); 1330 } 1331 nti = SIMPLEQ_NEXT(ti, entries); 1332 if (nti != NULL && nti->file == NULL) 1333 ti = nti; /* merge lists */ 1334 else 1335 break; 1336 } 1337 printf(" }"); 1338 } 1339 if (addrs && SIMPLEQ_EMPTY(nodes)) 1340 printf(" { }"); 1341 printf("\n"); 1342 } 1343 1344 int 1345 parse_flags(char *s) 1346 { 1347 char *p, *q; 1348 uint16_t f = 0; 1349 1350 for (p = s; *p; p++) { 1351 if ((q = strchr(tcpflags, *p)) == NULL) 1352 return -1; 1353 else 1354 f |= 1 << (q - tcpflags); 1355 } 1356 return (f ? f : TH_FLAGS); 1357 } 1358 1359 void 1360 set_ipmask(struct node_host *h, int bb) 1361 { 1362 struct pf_addr *m, *n; 1363 int i, j = 0; 1364 uint8_t b; 1365 1366 m = &h->addr.v.a.mask; 1367 memset(m, 0, sizeof(*m)); 1368 1369 if (bb == -1) 1370 b = h->af == AF_INET ? 32 : 128; 1371 else 1372 b = bb; 1373 1374 while (b >= 32) { 1375 m->addr32[j++] = 0xffffffff; 1376 b -= 32; 1377 } 1378 for (i = 31; i > 31-b; --i) 1379 m->addr32[j] |= (1 << i); 1380 if (b) 1381 m->addr32[j] = htonl(m->addr32[j]); 1382 1383 /* Mask off bits of the address that will never be used. */ 1384 n = &h->addr.v.a.addr; 1385 if (h->addr.type == PF_ADDR_ADDRMASK) 1386 for (i = 0; i < 4; i++) 1387 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1388 } 1389 1390 int 1391 check_netmask(struct node_host *h, sa_family_t af) 1392 { 1393 struct node_host *n = NULL; 1394 struct pf_addr *m; 1395 1396 for (n = h; n != NULL; n = n->next) { 1397 if (h->addr.type == PF_ADDR_TABLE) 1398 continue; 1399 m = &h->addr.v.a.mask; 1400 /* netmasks > 32 bit are invalid on v4 */ 1401 if (af == AF_INET && 1402 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1403 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1404 unmask(m)); 1405 return (1); 1406 } 1407 } 1408 return (0); 1409 } 1410 1411 struct node_host * 1412 gen_dynnode(struct node_host *h, sa_family_t af) 1413 { 1414 struct node_host *n; 1415 1416 if (h->addr.type != PF_ADDR_DYNIFTL) 1417 return (NULL); 1418 1419 if ((n = calloc(1, sizeof(*n))) == NULL) 1420 return (NULL); 1421 bcopy(h, n, sizeof(*n)); 1422 n->ifname = NULL; 1423 n->next = NULL; 1424 n->tail = NULL; 1425 1426 /* fix up netmask */ 1427 if (af == AF_INET && unmask(&n->addr.v.a.mask) > 32) 1428 set_ipmask(n, 32); 1429 1430 return (n); 1431 } 1432 1433 /* interface lookup routines */ 1434 1435 static struct node_host *iftab; 1436 1437 /* 1438 * Retrieve the list of groups this interface is a member of and make sure 1439 * each group is in the group map. 1440 */ 1441 static void 1442 ifa_add_groups_to_map(char *ifa_name) 1443 { 1444 int s, len; 1445 struct ifgroupreq ifgr; 1446 struct ifg_req *ifg; 1447 1448 s = get_query_socket(); 1449 1450 /* Get size of group list for this interface */ 1451 memset(&ifgr, 0, sizeof(ifgr)); 1452 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1453 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1454 err(1, "SIOCGIFGROUP"); 1455 1456 /* Retrieve group list for this interface */ 1457 len = ifgr.ifgr_len; 1458 ifgr.ifgr_groups = 1459 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1460 sizeof(struct ifg_req)); 1461 if (ifgr.ifgr_groups == NULL) 1462 err(1, "calloc"); 1463 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1464 err(1, "SIOCGIFGROUP"); 1465 1466 ifg = ifgr.ifgr_groups; 1467 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1468 len -= sizeof(struct ifg_req); 1469 if (strcmp(ifg->ifgrq_group, "all")) { 1470 ENTRY item; 1471 ENTRY *ret_item; 1472 int *answer; 1473 1474 item.key = ifg->ifgrq_group; 1475 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1476 struct ifgroupreq ifgr2; 1477 1478 /* Don't know the answer yet */ 1479 if ((answer = malloc(sizeof(int))) == NULL) 1480 err(1, "malloc"); 1481 1482 bzero(&ifgr2, sizeof(ifgr2)); 1483 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1484 sizeof(ifgr2.ifgr_name)); 1485 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1486 *answer = ifgr2.ifgr_len; 1487 else 1488 *answer = 0; 1489 1490 item.key = strdup(ifg->ifgrq_group); 1491 item.data = answer; 1492 if (hsearch_r(item, ENTER, &ret_item, 1493 &isgroup_map) == 0) 1494 err(1, "interface group query response" 1495 " map insert"); 1496 } 1497 } 1498 } 1499 free(ifgr.ifgr_groups); 1500 } 1501 1502 void 1503 ifa_load(void) 1504 { 1505 struct ifaddrs *ifap, *ifa; 1506 struct node_host *n = NULL, *h = NULL; 1507 1508 if (getifaddrs(&ifap) < 0) 1509 err(1, "getifaddrs"); 1510 1511 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1512 if (ifa->ifa_addr == NULL || 1513 !(ifa->ifa_addr->sa_family == AF_INET || 1514 ifa->ifa_addr->sa_family == AF_INET6 || 1515 ifa->ifa_addr->sa_family == AF_LINK)) 1516 continue; 1517 n = calloc(1, sizeof(struct node_host)); 1518 if (n == NULL) 1519 err(1, "%s: calloc", __func__); 1520 n->af = ifa->ifa_addr->sa_family; 1521 n->ifa_flags = ifa->ifa_flags; 1522 #ifdef __KAME__ 1523 if (n->af == AF_INET6 && 1524 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1525 ifa->ifa_addr)->sin6_addr) && 1526 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1527 0) { 1528 struct sockaddr_in6 *sin6; 1529 1530 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1531 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1532 sin6->sin6_addr.s6_addr[3]; 1533 sin6->sin6_addr.s6_addr[2] = 0; 1534 sin6->sin6_addr.s6_addr[3] = 0; 1535 } 1536 #endif 1537 n->ifindex = 0; 1538 if (n->af == AF_LINK) { 1539 n->ifindex = ((struct sockaddr_dl *) 1540 ifa->ifa_addr)->sdl_index; 1541 ifa_add_groups_to_map(ifa->ifa_name); 1542 } else { 1543 copy_satopfaddr(&n->addr.v.a.addr, ifa->ifa_addr); 1544 ifa->ifa_netmask->sa_family = ifa->ifa_addr->sa_family; 1545 copy_satopfaddr(&n->addr.v.a.mask, ifa->ifa_netmask); 1546 if (ifa->ifa_broadaddr != NULL) { 1547 ifa->ifa_broadaddr->sa_family = ifa->ifa_addr->sa_family; 1548 copy_satopfaddr(&n->bcast, ifa->ifa_broadaddr); 1549 } 1550 if (ifa->ifa_dstaddr != NULL) { 1551 ifa->ifa_dstaddr->sa_family = ifa->ifa_addr->sa_family; 1552 copy_satopfaddr(&n->peer, ifa->ifa_dstaddr); 1553 } 1554 if (n->af == AF_INET6) 1555 n->ifindex = ((struct sockaddr_in6 *) 1556 ifa->ifa_addr) ->sin6_scope_id; 1557 } 1558 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1559 err(1, "%s: strdup", __func__); 1560 n->next = NULL; 1561 n->tail = n; 1562 if (h == NULL) 1563 h = n; 1564 else { 1565 h->tail->next = n; 1566 h->tail = n; 1567 } 1568 } 1569 1570 iftab = h; 1571 freeifaddrs(ifap); 1572 } 1573 1574 static int 1575 get_socket_domain(void) 1576 { 1577 int sdom; 1578 1579 sdom = AF_UNSPEC; 1580 #ifdef WITH_INET6 1581 if (sdom == AF_UNSPEC && feature_present("inet6")) 1582 sdom = AF_INET6; 1583 #endif 1584 #ifdef WITH_INET 1585 if (sdom == AF_UNSPEC && feature_present("inet")) 1586 sdom = AF_INET; 1587 #endif 1588 if (sdom == AF_UNSPEC) 1589 sdom = AF_LINK; 1590 1591 return (sdom); 1592 } 1593 1594 int 1595 get_query_socket(void) 1596 { 1597 static int s = -1; 1598 1599 if (s == -1) { 1600 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1601 err(1, "socket"); 1602 } 1603 1604 return (s); 1605 } 1606 1607 /* 1608 * Returns the response len if the name is a group, otherwise returns 0. 1609 */ 1610 static int 1611 is_a_group(char *name) 1612 { 1613 ENTRY item; 1614 ENTRY *ret_item; 1615 1616 item.key = name; 1617 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1618 return (0); 1619 1620 return (*(int *)ret_item->data); 1621 } 1622 1623 unsigned int 1624 ifa_nametoindex(const char *ifa_name) 1625 { 1626 struct node_host *p; 1627 1628 for (p = iftab; p; p = p->next) { 1629 if (p->af == AF_LINK && strcmp(p->ifname, ifa_name) == 0) 1630 return (p->ifindex); 1631 } 1632 errno = ENXIO; 1633 return (0); 1634 } 1635 1636 char * 1637 ifa_indextoname(unsigned int ifindex, char *ifa_name) 1638 { 1639 struct node_host *p; 1640 1641 for (p = iftab; p; p = p->next) { 1642 if (p->af == AF_LINK && ifindex == p->ifindex) { 1643 strlcpy(ifa_name, p->ifname, IFNAMSIZ); 1644 return (ifa_name); 1645 } 1646 } 1647 errno = ENXIO; 1648 return (NULL); 1649 } 1650 1651 struct node_host * 1652 ifa_exists(char *ifa_name) 1653 { 1654 struct node_host *n; 1655 1656 if (iftab == NULL) 1657 ifa_load(); 1658 1659 /* check whether this is a group */ 1660 if (is_a_group(ifa_name)) { 1661 /* fake a node_host */ 1662 if ((n = calloc(1, sizeof(*n))) == NULL) 1663 err(1, "calloc"); 1664 if ((n->ifname = strdup(ifa_name)) == NULL) 1665 err(1, "strdup"); 1666 return (n); 1667 } 1668 1669 for (n = iftab; n; n = n->next) { 1670 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1671 return (n); 1672 } 1673 1674 return (NULL); 1675 } 1676 1677 struct node_host * 1678 ifa_grouplookup(char *ifa_name, int flags) 1679 { 1680 struct ifg_req *ifg; 1681 struct ifgroupreq ifgr; 1682 int s, len; 1683 struct node_host *n, *h = NULL; 1684 1685 s = get_query_socket(); 1686 len = is_a_group(ifa_name); 1687 if (len == 0) 1688 return (NULL); 1689 bzero(&ifgr, sizeof(ifgr)); 1690 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1691 ifgr.ifgr_len = len; 1692 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1693 err(1, "calloc"); 1694 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1695 err(1, "SIOCGIFGMEMB"); 1696 1697 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1698 ifg++) { 1699 len -= sizeof(struct ifg_req); 1700 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1701 continue; 1702 if (h == NULL) 1703 h = n; 1704 else { 1705 h->tail->next = n; 1706 h->tail = n->tail; 1707 } 1708 } 1709 free(ifgr.ifgr_groups); 1710 1711 return (h); 1712 } 1713 1714 struct node_host * 1715 ifa_lookup(char *ifa_name, int flags) 1716 { 1717 struct node_host *p = NULL, *h = NULL, *n = NULL; 1718 int got4 = 0, got6 = 0; 1719 const char *last_if = NULL; 1720 1721 /* first load iftab and isgroup_map */ 1722 if (iftab == NULL) 1723 ifa_load(); 1724 1725 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1726 return (h); 1727 1728 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1729 ifa_name = NULL; 1730 1731 for (p = iftab; p; p = p->next) { 1732 if (ifa_skip_if(ifa_name, p)) 1733 continue; 1734 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1735 continue; 1736 if ((flags & PFI_AFLAG_BROADCAST) && 1737 !(p->ifa_flags & IFF_BROADCAST)) 1738 continue; 1739 if ((flags & PFI_AFLAG_BROADCAST) && p->bcast.v4.s_addr == 0) 1740 continue; 1741 if ((flags & PFI_AFLAG_PEER) && 1742 !(p->ifa_flags & IFF_POINTOPOINT)) 1743 continue; 1744 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1745 continue; 1746 if (last_if == NULL || strcmp(last_if, p->ifname)) 1747 got4 = got6 = 0; 1748 last_if = p->ifname; 1749 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1750 continue; 1751 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1752 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1753 continue; 1754 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1755 continue; 1756 if (p->af == AF_INET) 1757 got4 = 1; 1758 else 1759 got6 = 1; 1760 n = calloc(1, sizeof(struct node_host)); 1761 if (n == NULL) 1762 err(1, "%s: calloc", __func__); 1763 n->af = p->af; 1764 if (flags & PFI_AFLAG_BROADCAST) 1765 memcpy(&n->addr.v.a.addr, &p->bcast, 1766 sizeof(struct pf_addr)); 1767 else if (flags & PFI_AFLAG_PEER) 1768 memcpy(&n->addr.v.a.addr, &p->peer, 1769 sizeof(struct pf_addr)); 1770 else 1771 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1772 sizeof(struct pf_addr)); 1773 if (flags & PFI_AFLAG_NETWORK) 1774 set_ipmask(n, unmask(&p->addr.v.a.mask)); 1775 else 1776 set_ipmask(n, -1); 1777 n->ifindex = p->ifindex; 1778 n->ifname = strdup(p->ifname); 1779 1780 n->next = NULL; 1781 n->tail = n; 1782 if (h == NULL) 1783 h = n; 1784 else { 1785 h->tail->next = n; 1786 h->tail = n; 1787 } 1788 } 1789 return (h); 1790 } 1791 1792 int 1793 ifa_skip_if(const char *filter, struct node_host *p) 1794 { 1795 int n; 1796 1797 if (p->af != AF_INET && p->af != AF_INET6) 1798 return (1); 1799 if (filter == NULL || !*filter) 1800 return (0); 1801 if (!strcmp(p->ifname, filter)) 1802 return (0); /* exact match */ 1803 n = strlen(filter); 1804 if (n < 1 || n >= IFNAMSIZ) 1805 return (1); /* sanity check */ 1806 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1807 return (1); /* only do exact match in that case */ 1808 if (strncmp(p->ifname, filter, n)) 1809 return (1); /* prefix doesn't match */ 1810 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1811 } 1812 1813 1814 struct node_host * 1815 host(const char *s, int opts) 1816 { 1817 struct node_host *h = NULL; 1818 int mask = -1; 1819 char *p, *ps; 1820 const char *errstr; 1821 1822 if ((p = strchr(s, '/')) != NULL) { 1823 mask = strtonum(p+1, 0, 128, &errstr); 1824 if (errstr) { 1825 fprintf(stderr, "netmask is %s: %s\n", errstr, p); 1826 goto error; 1827 } 1828 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1829 err(1, "%s: malloc", __func__); 1830 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1831 } else { 1832 if ((ps = strdup(s)) == NULL) 1833 err(1, "%s: strdup", __func__); 1834 } 1835 1836 if ((h = host_ip(ps, mask)) == NULL && 1837 (h = host_if(ps, mask)) == NULL && 1838 (h = host_dns(ps, mask, (opts & PF_OPT_NODNS))) == NULL) { 1839 fprintf(stderr, "no IP address found for %s\n", s); 1840 goto error; 1841 } 1842 1843 error: 1844 free(ps); 1845 return (h); 1846 } 1847 1848 struct node_host * 1849 host_if(const char *s, int mask) 1850 { 1851 struct node_host *n, *h = NULL; 1852 char *p, *ps; 1853 int flags = 0; 1854 1855 if ((ps = strdup(s)) == NULL) 1856 err(1, "host_if: strdup"); 1857 while ((p = strrchr(ps, ':')) != NULL) { 1858 if (!strcmp(p+1, "network")) 1859 flags |= PFI_AFLAG_NETWORK; 1860 else if (!strcmp(p+1, "broadcast")) 1861 flags |= PFI_AFLAG_BROADCAST; 1862 else if (!strcmp(p+1, "peer")) 1863 flags |= PFI_AFLAG_PEER; 1864 else if (!strcmp(p+1, "0")) 1865 flags |= PFI_AFLAG_NOALIAS; 1866 else 1867 goto error; 1868 *p = '\0'; 1869 } 1870 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1871 fprintf(stderr, "illegal combination of interface modifiers\n"); 1872 goto error; 1873 } 1874 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1875 fprintf(stderr, "network or broadcast lookup, but " 1876 "extra netmask given\n"); 1877 goto error; 1878 } 1879 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1880 /* interface with this name exists */ 1881 h = ifa_lookup(ps, flags); 1882 if (mask > -1) 1883 for (n = h; n != NULL; n = n->next) 1884 set_ipmask(n, mask); 1885 } 1886 1887 error: 1888 free(ps); 1889 return (h); 1890 } 1891 1892 struct node_host * 1893 host_ip(const char *s, int mask) 1894 { 1895 struct addrinfo hints, *res; 1896 struct node_host *h = NULL; 1897 1898 h = calloc(1, sizeof(*h)); 1899 if (h == NULL) 1900 err(1, "%s: calloc", __func__); 1901 if (mask != -1) { 1902 /* Try to parse 10/8 */ 1903 h->af = AF_INET; 1904 if (inet_net_pton(AF_INET, s, &h->addr.v.a.addr.v4, 1905 sizeof(h->addr.v.a.addr.v4)) != -1) 1906 goto out; 1907 } 1908 1909 memset(&hints, 0, sizeof(hints)); 1910 hints.ai_family = AF_UNSPEC; 1911 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1912 hints.ai_flags = AI_NUMERICHOST; 1913 if (getaddrinfo(s, NULL, &hints, &res) == 0) { 1914 h->af = res->ai_family; 1915 copy_satopfaddr(&h->addr.v.a.addr, res->ai_addr); 1916 if (h->af == AF_INET6) 1917 h->ifindex = 1918 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1919 freeaddrinfo(res); 1920 } else { 1921 free(h); 1922 return (NULL); 1923 } 1924 out: 1925 set_ipmask(h, mask); 1926 h->ifname = NULL; 1927 h->next = NULL; 1928 h->tail = h; 1929 1930 return (h); 1931 } 1932 1933 struct node_host * 1934 host_dns(const char *s, int mask, int numeric) 1935 { 1936 struct addrinfo hints, *res0, *res; 1937 struct node_host *n, *h = NULL; 1938 int noalias = 0, got4 = 0, got6 = 0; 1939 char *p, *ps; 1940 1941 if ((ps = strdup(s)) == NULL) 1942 err(1, "host_dns: strdup"); 1943 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1944 noalias = 1; 1945 *p = '\0'; 1946 } 1947 memset(&hints, 0, sizeof(hints)); 1948 hints.ai_family = PF_UNSPEC; 1949 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1950 if (numeric) 1951 hints.ai_flags = AI_NUMERICHOST; 1952 if (getaddrinfo(ps, NULL, &hints, &res0) != 0) 1953 goto error; 1954 1955 for (res = res0; res; res = res->ai_next) { 1956 if (res->ai_family != AF_INET && 1957 res->ai_family != AF_INET6) 1958 continue; 1959 if (noalias) { 1960 if (res->ai_family == AF_INET) { 1961 if (got4) 1962 continue; 1963 got4 = 1; 1964 } else { 1965 if (got6) 1966 continue; 1967 got6 = 1; 1968 } 1969 } 1970 n = calloc(1, sizeof(struct node_host)); 1971 if (n == NULL) 1972 err(1, "host_dns: calloc"); 1973 n->ifname = NULL; 1974 n->af = res->ai_family; 1975 copy_satopfaddr(&n->addr.v.a.addr, res->ai_addr); 1976 if (res->ai_family == AF_INET6) 1977 n->ifindex = 1978 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1979 set_ipmask(n, mask); 1980 n->next = NULL; 1981 n->tail = n; 1982 if (h == NULL) 1983 h = n; 1984 else { 1985 h->tail->next = n; 1986 h->tail = n; 1987 } 1988 } 1989 freeaddrinfo(res0); 1990 error: 1991 free(ps); 1992 1993 return (h); 1994 } 1995 1996 /* 1997 * convert a hostname to a list of addresses and put them in the given buffer. 1998 * test: 1999 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 2000 */ 2001 int 2002 append_addr(struct pfr_buffer *b, char *s, int test, int opts) 2003 { 2004 char *r; 2005 struct node_host *h, *n; 2006 int rv, not = 0; 2007 2008 for (r = s; *r == '!'; r++) 2009 not = !not; 2010 if ((n = host(r, opts)) == NULL) { 2011 errno = 0; 2012 return (-1); 2013 } 2014 rv = append_addr_host(b, n, test, not); 2015 do { 2016 h = n; 2017 n = n->next; 2018 free(h); 2019 } while (n != NULL); 2020 return (rv); 2021 } 2022 2023 /* 2024 * same as previous function, but with a pre-parsed input and the ability 2025 * to "negate" the result. Does not free the node_host list. 2026 * not: 2027 * setting it to 1 is equivalent to adding "!" in front of parameter s. 2028 */ 2029 int 2030 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 2031 { 2032 int bits; 2033 struct pfr_addr addr; 2034 2035 do { 2036 bzero(&addr, sizeof(addr)); 2037 addr.pfra_not = n->not ^ not; 2038 addr.pfra_af = n->af; 2039 addr.pfra_net = unmask(&n->addr.v.a.mask); 2040 switch (n->af) { 2041 case AF_INET: 2042 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 2043 bits = 32; 2044 break; 2045 case AF_INET6: 2046 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 2047 sizeof(struct in6_addr)); 2048 bits = 128; 2049 break; 2050 default: 2051 errno = EINVAL; 2052 return (-1); 2053 } 2054 if ((test && (not || addr.pfra_net != bits)) || 2055 addr.pfra_net > bits) { 2056 errno = EINVAL; 2057 return (-1); 2058 } 2059 if (pfr_buf_add(b, &addr)) 2060 return (-1); 2061 } while ((n = n->next) != NULL); 2062 2063 return (0); 2064 } 2065 2066 int 2067 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 2068 { 2069 struct pfioc_trans_e trans; 2070 2071 bzero(&trans, sizeof(trans)); 2072 trans.rs_num = rs_num; 2073 if (strlcpy(trans.anchor, anchor, 2074 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 2075 errx(1, "pfctl_add_trans: strlcpy"); 2076 2077 return pfr_buf_add(buf, &trans); 2078 } 2079 2080 u_int32_t 2081 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 2082 { 2083 struct pfioc_trans_e *p; 2084 2085 PFRB_FOREACH(p, buf) 2086 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 2087 return (p->ticket); 2088 errx(1, "pfctl_get_ticket: assertion failed"); 2089 } 2090 2091 int 2092 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 2093 { 2094 struct pfioc_trans trans; 2095 2096 bzero(&trans, sizeof(trans)); 2097 trans.size = buf->pfrb_size - from; 2098 trans.esize = sizeof(struct pfioc_trans_e); 2099 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 2100 return ioctl(dev, cmd, &trans); 2101 } 2102