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