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 copy_satopfaddr(struct pf_addr *, struct sockaddr *); 70 void print_op (u_int8_t, const char *, const char *); 71 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int); 72 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned); 73 void print_flags (uint16_t); 74 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 75 struct pf_rule_addr *, sa_family_t, u_int8_t, int, int); 76 int ifa_skip_if(const char *filter, struct node_host *p); 77 78 struct node_host *host_if(const char *, int); 79 struct node_host *host_ip(const char *, int); 80 struct node_host *host_dns(const char *, int, int); 81 82 const char * const tcpflags = "FSRPAUEWe"; 83 84 static const struct icmptypeent icmp_type[] = { 85 { "echoreq", ICMP_ECHO }, 86 { "echorep", ICMP_ECHOREPLY }, 87 { "unreach", ICMP_UNREACH }, 88 { "squench", ICMP_SOURCEQUENCH }, 89 { "redir", ICMP_REDIRECT }, 90 { "althost", ICMP_ALTHOSTADDR }, 91 { "routeradv", ICMP_ROUTERADVERT }, 92 { "routersol", ICMP_ROUTERSOLICIT }, 93 { "timex", ICMP_TIMXCEED }, 94 { "paramprob", ICMP_PARAMPROB }, 95 { "timereq", ICMP_TSTAMP }, 96 { "timerep", ICMP_TSTAMPREPLY }, 97 { "inforeq", ICMP_IREQ }, 98 { "inforep", ICMP_IREQREPLY }, 99 { "maskreq", ICMP_MASKREQ }, 100 { "maskrep", ICMP_MASKREPLY }, 101 { "trace", ICMP_TRACEROUTE }, 102 { "dataconv", ICMP_DATACONVERR }, 103 { "mobredir", ICMP_MOBILE_REDIRECT }, 104 { "ipv6-where", ICMP_IPV6_WHEREAREYOU }, 105 { "ipv6-here", ICMP_IPV6_IAMHERE }, 106 { "mobregreq", ICMP_MOBILE_REGREQUEST }, 107 { "mobregrep", ICMP_MOBILE_REGREPLY }, 108 { "skip", ICMP_SKIP }, 109 { "photuris", ICMP_PHOTURIS } 110 }; 111 112 static const struct icmptypeent icmp6_type[] = { 113 { "unreach", ICMP6_DST_UNREACH }, 114 { "toobig", ICMP6_PACKET_TOO_BIG }, 115 { "timex", ICMP6_TIME_EXCEEDED }, 116 { "paramprob", ICMP6_PARAM_PROB }, 117 { "echoreq", ICMP6_ECHO_REQUEST }, 118 { "echorep", ICMP6_ECHO_REPLY }, 119 { "groupqry", ICMP6_MEMBERSHIP_QUERY }, 120 { "listqry", MLD_LISTENER_QUERY }, 121 { "grouprep", ICMP6_MEMBERSHIP_REPORT }, 122 { "listenrep", MLD_LISTENER_REPORT }, 123 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION }, 124 { "listendone", MLD_LISTENER_DONE }, 125 { "routersol", ND_ROUTER_SOLICIT }, 126 { "routeradv", ND_ROUTER_ADVERT }, 127 { "neighbrsol", ND_NEIGHBOR_SOLICIT }, 128 { "neighbradv", ND_NEIGHBOR_ADVERT }, 129 { "redir", ND_REDIRECT }, 130 { "routrrenum", ICMP6_ROUTER_RENUMBERING }, 131 { "wrureq", ICMP6_WRUREQUEST }, 132 { "wrurep", ICMP6_WRUREPLY }, 133 { "fqdnreq", ICMP6_FQDN_QUERY }, 134 { "fqdnrep", ICMP6_FQDN_REPLY }, 135 { "niqry", ICMP6_NI_QUERY }, 136 { "nirep", ICMP6_NI_REPLY }, 137 { "mtraceresp", MLD_MTRACE_RESP }, 138 { "mtrace", MLD_MTRACE }, 139 { "listenrepv2", MLDV2_LISTENER_REPORT }, 140 }; 141 142 static const struct icmpcodeent icmp_code[] = { 143 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET }, 144 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST }, 145 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL }, 146 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT }, 147 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG }, 148 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL }, 149 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN }, 150 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN }, 151 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED }, 152 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB }, 153 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB }, 154 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET }, 155 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST }, 156 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB }, 157 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE }, 158 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF }, 159 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET }, 160 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST }, 161 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET }, 162 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST }, 163 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL }, 164 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON }, 165 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS }, 166 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS }, 167 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR }, 168 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT }, 169 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH }, 170 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX }, 171 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED }, 172 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED } 173 }; 174 175 static const struct icmpcodeent icmp6_code[] = { 176 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN }, 177 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE }, 178 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR }, 179 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE }, 180 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR }, 181 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT }, 182 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT }, 183 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY }, 184 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER }, 185 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER }, 186 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK }, 187 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER } 188 }; 189 190 const struct pf_timeout pf_timeouts[] = { 191 { "tcp.first", PFTM_TCP_FIRST_PACKET }, 192 { "tcp.opening", PFTM_TCP_OPENING }, 193 { "tcp.established", PFTM_TCP_ESTABLISHED }, 194 { "tcp.closing", PFTM_TCP_CLOSING }, 195 { "tcp.finwait", PFTM_TCP_FIN_WAIT }, 196 { "tcp.closed", PFTM_TCP_CLOSED }, 197 { "tcp.tsdiff", PFTM_TS_DIFF }, 198 { "sctp.first", PFTM_SCTP_FIRST_PACKET }, 199 { "sctp.opening", PFTM_SCTP_OPENING }, 200 { "sctp.established", PFTM_SCTP_ESTABLISHED }, 201 { "sctp.closing", PFTM_SCTP_CLOSING }, 202 { "sctp.closed", PFTM_SCTP_CLOSED }, 203 { "udp.first", PFTM_UDP_FIRST_PACKET }, 204 { "udp.single", PFTM_UDP_SINGLE }, 205 { "udp.multiple", PFTM_UDP_MULTIPLE }, 206 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 207 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 208 { "other.first", PFTM_OTHER_FIRST_PACKET }, 209 { "other.single", PFTM_OTHER_SINGLE }, 210 { "other.multiple", PFTM_OTHER_MULTIPLE }, 211 { "frag", PFTM_FRAG }, 212 { "interval", PFTM_INTERVAL }, 213 { "adaptive.start", PFTM_ADAPTIVE_START }, 214 { "adaptive.end", PFTM_ADAPTIVE_END }, 215 { "src.track", PFTM_SRC_NODE }, 216 { NULL, 0 } 217 }; 218 219 static struct hsearch_data isgroup_map; 220 221 static __attribute__((constructor)) void 222 pfctl_parser_init(void) 223 { 224 /* 225 * As hdestroy() will never be called on these tables, it will be 226 * safe to use references into the stored data as keys. 227 */ 228 if (hcreate_r(0, &isgroup_map) == 0) 229 err(1, "Failed to create interface group query response map"); 230 } 231 232 void 233 copy_satopfaddr(struct pf_addr *pfa, struct sockaddr *sa) 234 { 235 if (sa->sa_family == AF_INET6) 236 pfa->v6 = ((struct sockaddr_in6 *)sa)->sin6_addr; 237 else if (sa->sa_family == AF_INET) 238 pfa->v4 = ((struct sockaddr_in *)sa)->sin_addr; 239 else 240 warnx("unhandled af %d", sa->sa_family); 241 } 242 243 const struct icmptypeent * 244 geticmptypebynumber(u_int8_t type, sa_family_t af) 245 { 246 unsigned int i; 247 248 if (af != AF_INET6) { 249 for (i=0; i < nitems(icmp_type); i++) { 250 if (type == icmp_type[i].type) 251 return (&icmp_type[i]); 252 } 253 } else { 254 for (i=0; i < nitems(icmp6_type); i++) { 255 if (type == icmp6_type[i].type) 256 return (&icmp6_type[i]); 257 } 258 } 259 return (NULL); 260 } 261 262 const struct icmptypeent * 263 geticmptypebyname(char *w, sa_family_t af) 264 { 265 unsigned int i; 266 267 if (af != AF_INET6) { 268 for (i=0; i < nitems(icmp_type); i++) { 269 if (!strcmp(w, icmp_type[i].name)) 270 return (&icmp_type[i]); 271 } 272 } else { 273 for (i=0; i < nitems(icmp6_type); i++) { 274 if (!strcmp(w, icmp6_type[i].name)) 275 return (&icmp6_type[i]); 276 } 277 } 278 return (NULL); 279 } 280 281 const struct icmpcodeent * 282 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 283 { 284 unsigned int i; 285 286 if (af != AF_INET6) { 287 for (i=0; i < nitems(icmp_code); i++) { 288 if (type == icmp_code[i].type && 289 code == icmp_code[i].code) 290 return (&icmp_code[i]); 291 } 292 } else { 293 for (i=0; i < nitems(icmp6_code); i++) { 294 if (type == icmp6_code[i].type && 295 code == icmp6_code[i].code) 296 return (&icmp6_code[i]); 297 } 298 } 299 return (NULL); 300 } 301 302 const struct icmpcodeent * 303 geticmpcodebyname(u_long type, char *w, sa_family_t af) 304 { 305 unsigned int i; 306 307 if (af != AF_INET6) { 308 for (i=0; i < nitems(icmp_code); i++) { 309 if (type == icmp_code[i].type && 310 !strcmp(w, icmp_code[i].name)) 311 return (&icmp_code[i]); 312 } 313 } else { 314 for (i=0; i < nitems(icmp6_code); i++) { 315 if (type == icmp6_code[i].type && 316 !strcmp(w, icmp6_code[i].name)) 317 return (&icmp6_code[i]); 318 } 319 } 320 return (NULL); 321 } 322 323 void 324 print_op(u_int8_t op, const char *a1, const char *a2) 325 { 326 if (op == PF_OP_IRG) 327 printf(" %s >< %s", a1, a2); 328 else if (op == PF_OP_XRG) 329 printf(" %s <> %s", a1, a2); 330 else if (op == PF_OP_EQ) 331 printf(" = %s", a1); 332 else if (op == PF_OP_NE) 333 printf(" != %s", a1); 334 else if (op == PF_OP_LT) 335 printf(" < %s", a1); 336 else if (op == PF_OP_LE) 337 printf(" <= %s", a1); 338 else if (op == PF_OP_GT) 339 printf(" > %s", a1); 340 else if (op == PF_OP_GE) 341 printf(" >= %s", a1); 342 else if (op == PF_OP_RRG) 343 printf(" %s:%s", a1, a2); 344 } 345 346 void 347 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric) 348 { 349 char a1[6], a2[6]; 350 struct servent *s; 351 352 if (!numeric) 353 s = getservbyport(p1, proto); 354 else 355 s = NULL; 356 p1 = ntohs(p1); 357 p2 = ntohs(p2); 358 snprintf(a1, sizeof(a1), "%u", p1); 359 snprintf(a2, sizeof(a2), "%u", p2); 360 printf(" port"); 361 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 362 print_op(op, s->s_name, a2); 363 else 364 print_op(op, a1, a2); 365 } 366 367 void 368 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 369 { 370 char a1[11], a2[11]; 371 372 snprintf(a1, sizeof(a1), "%u", u1); 373 snprintf(a2, sizeof(a2), "%u", u2); 374 printf(" %s", t); 375 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 376 print_op(op, "unknown", a2); 377 else 378 print_op(op, a1, a2); 379 } 380 381 void 382 print_flags(uint16_t f) 383 { 384 int i; 385 386 for (i = 0; tcpflags[i]; ++i) 387 if (f & (1 << i)) 388 printf("%c", tcpflags[i]); 389 } 390 391 void 392 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 393 sa_family_t af, u_int8_t proto, int verbose, int numeric) 394 { 395 char buf[PF_OSFP_LEN*3]; 396 if (src->addr.type == PF_ADDR_ADDRMASK && 397 dst->addr.type == PF_ADDR_ADDRMASK && 398 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 399 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 400 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 401 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 402 !src->neg && !dst->neg && 403 !src->port_op && !dst->port_op && 404 osfp == PF_OSFP_ANY) 405 printf(" all"); 406 else { 407 printf(" from "); 408 if (src->neg) 409 printf("! "); 410 print_addr(&src->addr, af, verbose); 411 if (src->port_op) 412 print_port(src->port_op, src->port[0], 413 src->port[1], 414 proto == IPPROTO_TCP ? "tcp" : "udp", 415 numeric); 416 if (osfp != PF_OSFP_ANY) 417 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 418 sizeof(buf))); 419 420 printf(" to "); 421 if (dst->neg) 422 printf("! "); 423 print_addr(&dst->addr, af, verbose); 424 if (dst->port_op) 425 print_port(dst->port_op, dst->port[0], 426 dst->port[1], 427 proto == IPPROTO_TCP ? "tcp" : "udp", 428 numeric); 429 } 430 } 431 432 void 433 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2, 434 sa_family_t af, int id) 435 { 436 struct pf_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, af, 0); 447 break; 448 case PF_PASS: 449 case PF_MATCH: 450 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 451 printf("%s", pooladdr->ifname); 452 else { 453 printf("(%s ", pooladdr->ifname); 454 print_addr(&pooladdr->addr, 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 } 514 515 void 516 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts) 517 { 518 struct pfctl_status_counter *c; 519 char statline[80], *running; 520 time_t runtime; 521 int i; 522 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 523 static const char hex[] = "0123456789abcdef"; 524 525 runtime = time(NULL) - s->since; 526 running = s->running ? "Enabled" : "Disabled"; 527 528 if (s->since) { 529 unsigned int sec, min, hrs; 530 time_t day = runtime; 531 532 sec = day % 60; 533 day /= 60; 534 min = day % 60; 535 day /= 60; 536 hrs = day % 24; 537 day /= 24; 538 snprintf(statline, sizeof(statline), 539 "Status: %s for %lld days %.2u:%.2u:%.2u", 540 running, (long long)day, hrs, min, sec); 541 } else 542 snprintf(statline, sizeof(statline), "Status: %s", running); 543 printf("%-44s", statline); 544 switch (s->debug) { 545 case PF_DEBUG_NONE: 546 printf("%15s\n\n", "Debug: None"); 547 break; 548 case PF_DEBUG_URGENT: 549 printf("%15s\n\n", "Debug: Urgent"); 550 break; 551 case PF_DEBUG_MISC: 552 printf("%15s\n\n", "Debug: Misc"); 553 break; 554 case PF_DEBUG_NOISY: 555 printf("%15s\n\n", "Debug: Loud"); 556 break; 557 } 558 559 if (opts & PF_OPT_VERBOSE) { 560 printf("Hostid: 0x%08x\n", s->hostid); 561 562 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 563 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 564 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 565 } 566 buf[i + i] = '\0'; 567 printf("Checksum: 0x%s\n\n", buf); 568 } 569 570 if (s->ifname[0] != 0) { 571 printf("Interface Stats for %-16s %5s %16s\n", 572 s->ifname, "IPv4", "IPv6"); 573 printf(" %-25s %14llu %16llu\n", "Bytes In", 574 (unsigned long long)s->bcounters[0][0], 575 (unsigned long long)s->bcounters[1][0]); 576 printf(" %-25s %14llu %16llu\n", "Bytes Out", 577 (unsigned long long)s->bcounters[0][1], 578 (unsigned long long)s->bcounters[1][1]); 579 printf(" Packets In\n"); 580 printf(" %-23s %14llu %16llu\n", "Passed", 581 (unsigned long long)s->pcounters[0][0][PF_PASS], 582 (unsigned long long)s->pcounters[1][0][PF_PASS]); 583 printf(" %-23s %14llu %16llu\n", "Blocked", 584 (unsigned long long)s->pcounters[0][0][PF_DROP], 585 (unsigned long long)s->pcounters[1][0][PF_DROP]); 586 printf(" Packets Out\n"); 587 printf(" %-23s %14llu %16llu\n", "Passed", 588 (unsigned long long)s->pcounters[0][1][PF_PASS], 589 (unsigned long long)s->pcounters[1][1][PF_PASS]); 590 printf(" %-23s %14llu %16llu\n\n", "Blocked", 591 (unsigned long long)s->pcounters[0][1][PF_DROP], 592 (unsigned long long)s->pcounters[1][1][PF_DROP]); 593 } 594 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 595 printf(" %-25s %14ju %14s\n", "current entries", s->states, ""); 596 TAILQ_FOREACH(c, &s->fcounters, entry) { 597 printf(" %-25s %14ju ", c->name, c->counter); 598 if (runtime > 0) 599 printf("%14.1f/s\n", 600 (double)c->counter / (double)runtime); 601 else 602 printf("%14s\n", ""); 603 } 604 if (opts & PF_OPT_VERBOSE) { 605 printf("Source Tracking Table\n"); 606 printf(" %-25s %14ju %14s\n", "current entries", 607 s->src_nodes, ""); 608 TAILQ_FOREACH(c, &s->scounters, entry) { 609 printf(" %-25s %14ju ", c->name, c->counter); 610 if (runtime > 0) 611 printf("%14.1f/s\n", 612 (double)c->counter / (double)runtime); 613 else 614 printf("%14s\n", ""); 615 } 616 } 617 printf("Counters\n"); 618 TAILQ_FOREACH(c, &s->counters, entry) { 619 printf(" %-25s %14ju ", c->name, c->counter); 620 if (runtime > 0) 621 printf("%14.1f/s\n", 622 (double)c->counter / (double)runtime); 623 else 624 printf("%14s\n", ""); 625 } 626 if (opts & PF_OPT_VERBOSE) { 627 printf("Limit Counters\n"); 628 TAILQ_FOREACH(c, &s->lcounters, entry) { 629 printf(" %-25s %14ju ", c->name, c->counter); 630 if (runtime > 0) 631 printf("%14.1f/s\n", 632 (double)c->counter / (double)runtime); 633 else 634 printf("%14s\n", ""); 635 } 636 637 printf("Syncookies\n"); 638 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE); 639 printf(" %-25s %s\n", "mode", 640 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]); 641 printf(" %-25s %s\n", "active", 642 s->syncookies_active ? "active" : "inactive"); 643 if (opts & PF_OPT_VERBOSE2) { 644 printf(" %-25s %d %%\n", "highwater", cookies->highwater); 645 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater); 646 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states); 647 } 648 printf("Reassemble %24s %s\n", 649 s->reass & PF_REASS_ENABLED ? "yes" : "no", 650 s->reass & PF_REASS_NODF ? "no-df" : "" 651 ); 652 } 653 } 654 655 void 656 print_running(struct pfctl_status *status) 657 { 658 printf("%s\n", status->running ? "Enabled" : "Disabled"); 659 } 660 661 void 662 print_src_node(struct pfctl_src_node *sn, int opts) 663 { 664 struct pf_addr_wrap aw; 665 uint64_t min, sec; 666 const char *sn_type_names[] = PF_SN_TYPE_NAMES; 667 668 memset(&aw, 0, sizeof(aw)); 669 if (sn->af == AF_INET) 670 aw.v.a.mask.addr32[0] = 0xffffffff; 671 else 672 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 673 674 aw.v.a.addr = sn->addr; 675 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 676 printf(" -> "); 677 aw.v.a.addr = sn->raddr; 678 print_addr(&aw, sn->naf ? sn->naf : sn->af, opts & PF_OPT_VERBOSE2); 679 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 680 sn->conn, sn->conn_rate.count / 1000, 681 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 682 if (opts & PF_OPT_VERBOSE) { 683 sec = sn->creation % 60; 684 sn->creation /= 60; 685 min = sn->creation % 60; 686 sn->creation /= 60; 687 printf(" age %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64, 688 sn->creation, min, sec); 689 if (sn->states == 0) { 690 sec = sn->expire % 60; 691 sn->expire /= 60; 692 min = sn->expire % 60; 693 sn->expire /= 60; 694 printf(", expires in %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64, 695 sn->expire, min, sec); 696 } 697 printf(", %" PRIu64 " pkts, %" PRIu64 " bytes", 698 sn->packets[0] + sn->packets[1], 699 sn->bytes[0] + sn->bytes[1]); 700 switch (sn->ruletype) { 701 case PF_NAT: 702 if (sn->rule != -1) 703 printf(", nat rule %u", sn->rule); 704 break; 705 case PF_RDR: 706 if (sn->rule != -1) 707 printf(", rdr rule %u", sn->rule); 708 break; 709 case PF_PASS: 710 case PF_MATCH: 711 if (sn->rule != -1) 712 printf(", filter rule %u", sn->rule); 713 break; 714 } 715 printf(", %s", sn_type_names[sn->type]); 716 printf("\n"); 717 } 718 } 719 720 static void 721 print_eth_addr(const struct pfctl_eth_addr *a) 722 { 723 int i, masklen = ETHER_ADDR_LEN * 8; 724 bool seen_unset = false; 725 726 for (i = 0; i < ETHER_ADDR_LEN; i++) { 727 if (a->addr[i] != 0) 728 break; 729 } 730 731 /* Unset, so don't print anything. */ 732 if (i == ETHER_ADDR_LEN) 733 return; 734 735 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "", 736 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4], 737 a->addr[5]); 738 739 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) { 740 bool isset = a->mask[i / 8] & (1 << i % 8); 741 742 if (! seen_unset) { 743 if (isset) 744 continue; 745 seen_unset = true; 746 masklen = i; 747 } else { 748 /* Not actually a continuous mask, so print the whole 749 * thing. */ 750 if (isset) 751 break; 752 continue; 753 } 754 } 755 756 if (masklen == (ETHER_ADDR_LEN * 8)) 757 return; 758 759 if (i == (ETHER_ADDR_LEN * 8)) { 760 printf("/%d", masklen); 761 return; 762 } 763 764 printf("&%02x:%02x:%02x:%02x:%02x:%02x", 765 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4], 766 a->mask[5]); 767 } 768 769 void 770 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call, 771 int rule_numbers) 772 { 773 static const char *actiontypes[] = { "pass", "block", "", "", "", "", 774 "", "", "", "", "", "", "match" }; 775 776 int i; 777 778 if (rule_numbers) 779 printf("@%u ", r->nr); 780 781 printf("ether "); 782 if (anchor_call[0]) { 783 if (anchor_call[0] == '_') { 784 printf("anchor"); 785 } else 786 printf("anchor \"%s\"", anchor_call); 787 } else { 788 printf("%s", actiontypes[r->action]); 789 } 790 if (r->direction == PF_IN) 791 printf(" in"); 792 else if (r->direction == PF_OUT) 793 printf(" out"); 794 795 if (r->quick) 796 printf(" quick"); 797 if (r->ifname[0]) { 798 if (r->ifnot) 799 printf(" on ! %s", r->ifname); 800 else 801 printf(" on %s", r->ifname); 802 } 803 if (r->bridge_to[0]) 804 printf(" bridge-to %s", r->bridge_to); 805 if (r->proto) 806 printf(" proto 0x%04x", r->proto); 807 808 if (r->src.isset) { 809 printf(" from "); 810 print_eth_addr(&r->src); 811 } 812 if (r->dst.isset) { 813 printf(" to "); 814 print_eth_addr(&r->dst); 815 } 816 printf(" l3"); 817 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst, 818 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0, 819 0, 0); 820 821 i = 0; 822 while (r->label[i][0]) 823 printf(" label \"%s\"", r->label[i++]); 824 if (r->ridentifier) 825 printf(" ridentifier %u", r->ridentifier); 826 827 if (r->qname[0]) 828 printf(" queue %s", r->qname); 829 if (r->tagname[0]) 830 printf(" tag %s", r->tagname); 831 if (r->match_tagname[0]) { 832 if (r->match_tag_not) 833 printf(" !"); 834 printf(" tagged %s", r->match_tagname); 835 } 836 if (r->dnpipe) 837 printf(" %s %d", 838 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 839 r->dnpipe); 840 } 841 842 void 843 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric) 844 { 845 static const char *actiontypes[] = { "pass", "block", "scrub", 846 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr", 847 "", "", "match"}; 848 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 849 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 850 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 851 int i, ropts; 852 char *p; 853 854 if (verbose) 855 printf("@%d ", r->nr); 856 if (r->action == PF_MATCH) 857 printf("match"); 858 else if (r->action > PF_NORDR) 859 printf("action(%d)", r->action); 860 else if (anchor_call[0]) { 861 p = strrchr(anchor_call, '/'); 862 if (p ? p[1] == '_' : anchor_call[0] == '_') 863 printf("%s", anchortypes[r->action]); 864 else 865 printf("%s \"%s\"", anchortypes[r->action], 866 anchor_call); 867 } else { 868 printf("%s", actiontypes[r->action]); 869 if (r->natpass) 870 printf(" pass"); 871 } 872 if (r->action == PF_DROP) { 873 if (r->rule_flag & PFRULE_RETURN) 874 printf(" return"); 875 else if (r->rule_flag & PFRULE_RETURNRST) { 876 if (!r->return_ttl) 877 printf(" return-rst"); 878 else 879 printf(" return-rst(ttl %d)", r->return_ttl); 880 } else if (r->rule_flag & PFRULE_RETURNICMP) { 881 const struct icmpcodeent *ic, *ic6; 882 883 ic = geticmpcodebynumber(r->return_icmp >> 8, 884 r->return_icmp & 255, AF_INET); 885 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 886 r->return_icmp6 & 255, AF_INET6); 887 888 switch (r->af) { 889 case AF_INET: 890 printf(" return-icmp"); 891 if (ic == NULL) 892 printf("(%u)", r->return_icmp & 255); 893 else 894 printf("(%s)", ic->name); 895 break; 896 case AF_INET6: 897 printf(" return-icmp6"); 898 if (ic6 == NULL) 899 printf("(%u)", r->return_icmp6 & 255); 900 else 901 printf("(%s)", ic6->name); 902 break; 903 default: 904 printf(" return-icmp"); 905 if (ic == NULL) 906 printf("(%u, ", r->return_icmp & 255); 907 else 908 printf("(%s, ", ic->name); 909 if (ic6 == NULL) 910 printf("%u)", r->return_icmp6 & 255); 911 else 912 printf("%s)", ic6->name); 913 break; 914 } 915 } else 916 printf(" drop"); 917 } 918 if (r->direction == PF_IN) 919 printf(" in"); 920 else if (r->direction == PF_OUT) 921 printf(" out"); 922 if (r->log) { 923 printf(" log"); 924 if (r->log & ~PF_LOG || r->logif) { 925 int count = 0; 926 927 printf(" ("); 928 if (r->log & PF_LOG_ALL) 929 printf("%sall", count++ ? ", " : ""); 930 if (r->log & PF_LOG_MATCHES) 931 printf("%smatches", count++ ? ", " : ""); 932 if (r->log & PF_LOG_SOCKET_LOOKUP) 933 printf("%suser", count++ ? ", " : ""); 934 if (r->logif) 935 printf("%sto pflog%u", count++ ? ", " : "", 936 r->logif); 937 printf(")"); 938 } 939 } 940 if (r->quick) 941 printf(" quick"); 942 if (r->ifname[0]) { 943 if (r->ifnot) 944 printf(" on ! %s", r->ifname); 945 else 946 printf(" on %s", r->ifname); 947 } 948 if (r->rt) { 949 if (r->rt == PF_ROUTETO) 950 printf(" route-to"); 951 else if (r->rt == PF_REPLYTO) 952 printf(" reply-to"); 953 else if (r->rt == PF_DUPTO) 954 printf(" dup-to"); 955 printf(" "); 956 print_pool(&r->rdr, 0, 0, r->af, PF_PASS); 957 print_pool(&r->route, 0, 0, 958 r->rule_flag & PFRULE_AFTO && r->rt != PF_REPLYTO ? r->naf : r->af, 959 PF_PASS); 960 } 961 if (r->af) { 962 if (r->af == AF_INET) 963 printf(" inet"); 964 else 965 printf(" inet6"); 966 } 967 if (r->proto) { 968 const char *protoname; 969 970 if ((protoname = pfctl_proto2name(r->proto)) != NULL) 971 printf(" proto %s", protoname); 972 else 973 printf(" proto %u", r->proto); 974 } 975 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 976 verbose, numeric); 977 if (r->rcv_ifname[0]) 978 printf(" %sreceived-on %s", r->rcvifnot ? "!" : "", 979 r->rcv_ifname); 980 if (r->uid.op) 981 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 982 UID_MAX); 983 if (r->gid.op) 984 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 985 GID_MAX); 986 if (r->flags || r->flagset) { 987 printf(" flags "); 988 print_flags(r->flags); 989 printf("/"); 990 print_flags(r->flagset); 991 } else if ((r->action == PF_PASS || r->action == PF_MATCH) && 992 (!r->proto || r->proto == IPPROTO_TCP) && 993 !(r->rule_flag & PFRULE_FRAGMENT) && 994 !anchor_call[0] && r->keep_state) 995 printf(" flags any"); 996 if (r->type) { 997 const struct icmptypeent *it; 998 999 it = geticmptypebynumber(r->type-1, r->af); 1000 if (r->af != AF_INET6) 1001 printf(" icmp-type"); 1002 else 1003 printf(" icmp6-type"); 1004 if (it != NULL) 1005 printf(" %s", it->name); 1006 else 1007 printf(" %u", r->type-1); 1008 if (r->code) { 1009 const struct icmpcodeent *ic; 1010 1011 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 1012 if (ic != NULL) 1013 printf(" code %s", ic->name); 1014 else 1015 printf(" code %u", r->code-1); 1016 } 1017 } 1018 if (r->tos) 1019 printf(" tos 0x%2.2x", r->tos); 1020 if (r->prio) 1021 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 1022 if (r->pktrate.limit) 1023 printf(" max-pkt-rate %u/%u", r->pktrate.limit, 1024 r->pktrate.seconds); 1025 if (r->max_pkt_size) 1026 printf( " max-pkt-size %u", r->max_pkt_size); 1027 if (r->scrub_flags & PFSTATE_SETMASK) { 1028 char *comma = ""; 1029 printf(" set ("); 1030 if (r->scrub_flags & PFSTATE_SETPRIO) { 1031 if (r->set_prio[0] == r->set_prio[1]) 1032 printf("%s prio %u", comma, r->set_prio[0]); 1033 else 1034 printf("%s prio(%u, %u)", comma, r->set_prio[0], 1035 r->set_prio[1]); 1036 comma = ","; 1037 } 1038 if (r->scrub_flags & PFSTATE_SETTOS) { 1039 printf("%s tos 0x%2.2x", comma, r->set_tos); 1040 comma = ","; 1041 } 1042 printf(" )"); 1043 } 1044 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 1045 printf(" no state"); 1046 else if (r->keep_state == PF_STATE_NORMAL) 1047 printf(" keep state"); 1048 else if (r->keep_state == PF_STATE_MODULATE) 1049 printf(" modulate state"); 1050 else if (r->keep_state == PF_STATE_SYNPROXY) 1051 printf(" synproxy state"); 1052 if (r->prob) { 1053 char buf[20]; 1054 1055 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 1056 for (i = strlen(buf)-1; i > 0; i--) { 1057 if (buf[i] == '0') 1058 buf[i] = '\0'; 1059 else { 1060 if (buf[i] == '.') 1061 buf[i] = '\0'; 1062 break; 1063 } 1064 } 1065 printf(" probability %s%%", buf); 1066 } 1067 ropts = 0; 1068 if (r->max_states || r->max_src_nodes || r->max_src_states) 1069 ropts = 1; 1070 if (r->rule_flag & PFRULE_NOSYNC) 1071 ropts = 1; 1072 if (r->rule_flag & PFRULE_SRCTRACK) 1073 ropts = 1; 1074 if (r->rule_flag & PFRULE_IFBOUND) 1075 ropts = 1; 1076 if (r->rule_flag & PFRULE_STATESLOPPY) 1077 ropts = 1; 1078 if (r->rule_flag & PFRULE_PFLOW) 1079 ropts = 1; 1080 for (i = 0; !ropts && i < PFTM_MAX; ++i) 1081 if (r->timeout[i]) 1082 ropts = 1; 1083 if (ropts) { 1084 printf(" ("); 1085 if (r->max_states) { 1086 printf("max %u", r->max_states); 1087 ropts = 0; 1088 } 1089 if (r->rule_flag & PFRULE_NOSYNC) { 1090 if (!ropts) 1091 printf(", "); 1092 printf("no-sync"); 1093 ropts = 0; 1094 } 1095 if (r->rule_flag & PFRULE_SRCTRACK) { 1096 if (!ropts) 1097 printf(", "); 1098 printf("source-track"); 1099 if (r->rule_flag & PFRULE_RULESRCTRACK) 1100 printf(" rule"); 1101 else 1102 printf(" global"); 1103 ropts = 0; 1104 } 1105 if (r->max_src_states) { 1106 if (!ropts) 1107 printf(", "); 1108 printf("max-src-states %u", r->max_src_states); 1109 ropts = 0; 1110 } 1111 if (r->max_src_conn) { 1112 if (!ropts) 1113 printf(", "); 1114 printf("max-src-conn %u", r->max_src_conn); 1115 ropts = 0; 1116 } 1117 if (r->max_src_conn_rate.limit) { 1118 if (!ropts) 1119 printf(", "); 1120 printf("max-src-conn-rate %u/%u", 1121 r->max_src_conn_rate.limit, 1122 r->max_src_conn_rate.seconds); 1123 ropts = 0; 1124 } 1125 if (r->max_src_nodes) { 1126 if (!ropts) 1127 printf(", "); 1128 printf("max-src-nodes %u", r->max_src_nodes); 1129 ropts = 0; 1130 } 1131 if (r->overload_tblname[0]) { 1132 if (!ropts) 1133 printf(", "); 1134 printf("overload <%s>", r->overload_tblname); 1135 if (r->flush) 1136 printf(" flush"); 1137 if (r->flush & PF_FLUSH_GLOBAL) 1138 printf(" global"); 1139 } 1140 if (r->rule_flag & PFRULE_IFBOUND) { 1141 if (!ropts) 1142 printf(", "); 1143 printf("if-bound"); 1144 ropts = 0; 1145 } 1146 if (r->rule_flag & PFRULE_STATESLOPPY) { 1147 if (!ropts) 1148 printf(", "); 1149 printf("sloppy"); 1150 ropts = 0; 1151 } 1152 if (r->rule_flag & PFRULE_PFLOW) { 1153 if (!ropts) 1154 printf(", "); 1155 printf("pflow"); 1156 ropts = 0; 1157 } 1158 for (i = 0; i < PFTM_MAX; ++i) 1159 if (r->timeout[i]) { 1160 int j; 1161 1162 if (!ropts) 1163 printf(", "); 1164 ropts = 0; 1165 for (j = 0; pf_timeouts[j].name != NULL; 1166 ++j) 1167 if (pf_timeouts[j].timeout == i) 1168 break; 1169 printf("%s %u", pf_timeouts[j].name == NULL ? 1170 "inv.timeout" : pf_timeouts[j].name, 1171 r->timeout[i]); 1172 } 1173 printf(")"); 1174 } 1175 if (r->allow_opts) 1176 printf(" allow-opts"); 1177 if (r->rule_flag & PFRULE_FRAGMENT) 1178 printf(" fragment"); 1179 if (r->action == PF_SCRUB) { 1180 /* Scrub flags for old-style scrub. */ 1181 if (r->rule_flag & PFRULE_NODF) 1182 printf(" no-df"); 1183 if (r->rule_flag & PFRULE_RANDOMID) 1184 printf(" random-id"); 1185 if (r->min_ttl) 1186 printf(" min-ttl %d", r->min_ttl); 1187 if (r->max_mss) 1188 printf(" max-mss %d", r->max_mss); 1189 if (r->rule_flag & PFRULE_SET_TOS) 1190 printf(" set-tos 0x%2.2x", r->set_tos); 1191 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1192 printf(" reassemble tcp"); 1193 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */ 1194 printf(" fragment %sreassemble", 1195 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : ""); 1196 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) { 1197 /* Scrub actions on normal rules. */ 1198 printf(" scrub("); 1199 if (r->scrub_flags & PFSTATE_NODF) 1200 printf(" no-df"); 1201 if (r->scrub_flags & PFSTATE_RANDOMID) 1202 printf(" random-id"); 1203 if (r->min_ttl) 1204 printf(" min-ttl %d", r->min_ttl); 1205 if (r->scrub_flags & PFSTATE_SETTOS) 1206 printf(" set-tos 0x%2.2x", r->set_tos); 1207 if (r->scrub_flags & PFSTATE_SCRUB_TCP) 1208 printf(" reassemble tcp"); 1209 if (r->max_mss) 1210 printf(" max-mss %d", r->max_mss); 1211 printf(")"); 1212 } 1213 i = 0; 1214 while (r->label[i][0]) 1215 printf(" label \"%s\"", r->label[i++]); 1216 if (r->ridentifier) 1217 printf(" ridentifier %u", r->ridentifier); 1218 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */ 1219 if (r->dnrpipe) 1220 printf(" %s(%d, %d)", 1221 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1222 r->dnpipe, r->dnrpipe); 1223 else if (r->dnpipe) 1224 printf(" %s %d", 1225 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1226 r->dnpipe); 1227 if (r->qname[0] && r->pqname[0]) 1228 printf(" queue(%s, %s)", r->qname, r->pqname); 1229 else if (r->qname[0]) 1230 printf(" queue %s", r->qname); 1231 if (r->tagname[0]) 1232 printf(" tag %s", r->tagname); 1233 if (r->match_tagname[0]) { 1234 if (r->match_tag_not) 1235 printf(" !"); 1236 printf(" tagged %s", r->match_tagname); 1237 } 1238 if (r->rtableid != -1) 1239 printf(" rtable %u", r->rtableid); 1240 if (r->divert.port) { 1241 #ifdef __FreeBSD__ 1242 printf(" divert-to %u", ntohs(r->divert.port)); 1243 #else 1244 if (PF_AZERO(&r->divert.addr, r->af)) { 1245 printf(" divert-reply"); 1246 } else { 1247 printf(" divert-to "); 1248 print_addr_str(r->af, &r->divert.addr); 1249 printf(" port %u", ntohs(r->divert.port)); 1250 } 1251 #endif 1252 } 1253 if (anchor_call[0]) 1254 return; 1255 if (r->action == PF_NAT || r->action == PF_BINAT || r->action == PF_RDR) { 1256 printf(" -> "); 1257 print_pool(&r->rdr, r->rdr.proxy_port[0], 1258 r->rdr.proxy_port[1], r->af, r->action); 1259 } else { 1260 if (!TAILQ_EMPTY(&r->nat.list)) { 1261 if (r->rule_flag & PFRULE_AFTO) { 1262 printf(" af-to %s from ", r->naf == AF_INET ? "inet" : "inet6"); 1263 } else { 1264 printf(" nat-to "); 1265 } 1266 print_pool(&r->nat, r->nat.proxy_port[0], 1267 r->nat.proxy_port[1], r->naf ? r->naf : r->af, 1268 PF_NAT); 1269 } 1270 if (!TAILQ_EMPTY(&r->rdr.list)) { 1271 if (r->rule_flag & PFRULE_AFTO) { 1272 printf(" to "); 1273 } else { 1274 printf(" rdr-to "); 1275 } 1276 print_pool(&r->rdr, r->rdr.proxy_port[0], 1277 r->rdr.proxy_port[1], r->naf ? r->naf : r->af, 1278 PF_RDR); 1279 } 1280 } 1281 } 1282 1283 void 1284 print_tabledef(const char *name, int flags, int addrs, 1285 struct node_tinithead *nodes) 1286 { 1287 struct node_tinit *ti, *nti; 1288 struct node_host *h; 1289 1290 printf("table <%s>", name); 1291 if (flags & PFR_TFLAG_CONST) 1292 printf(" const"); 1293 if (flags & PFR_TFLAG_PERSIST) 1294 printf(" persist"); 1295 if (flags & PFR_TFLAG_COUNTERS) 1296 printf(" counters"); 1297 SIMPLEQ_FOREACH(ti, nodes, entries) { 1298 if (ti->file) { 1299 printf(" file \"%s\"", ti->file); 1300 continue; 1301 } 1302 printf(" {"); 1303 for (;;) { 1304 for (h = ti->host; h != NULL; h = h->next) { 1305 printf(h->not ? " !" : " "); 1306 print_addr(&h->addr, h->af, 0); 1307 } 1308 nti = SIMPLEQ_NEXT(ti, entries); 1309 if (nti != NULL && nti->file == NULL) 1310 ti = nti; /* merge lists */ 1311 else 1312 break; 1313 } 1314 printf(" }"); 1315 } 1316 if (addrs && SIMPLEQ_EMPTY(nodes)) 1317 printf(" { }"); 1318 printf("\n"); 1319 } 1320 1321 int 1322 parse_flags(char *s) 1323 { 1324 char *p, *q; 1325 uint16_t f = 0; 1326 1327 for (p = s; *p; p++) { 1328 if ((q = strchr(tcpflags, *p)) == NULL) 1329 return -1; 1330 else 1331 f |= 1 << (q - tcpflags); 1332 } 1333 return (f ? f : TH_FLAGS); 1334 } 1335 1336 void 1337 set_ipmask(struct node_host *h, int bb) 1338 { 1339 struct pf_addr *m, *n; 1340 int i, j = 0; 1341 uint8_t b; 1342 1343 m = &h->addr.v.a.mask; 1344 memset(m, 0, sizeof(*m)); 1345 1346 if (bb == -1) 1347 b = h->af == AF_INET ? 32 : 128; 1348 else 1349 b = bb; 1350 1351 while (b >= 32) { 1352 m->addr32[j++] = 0xffffffff; 1353 b -= 32; 1354 } 1355 for (i = 31; i > 31-b; --i) 1356 m->addr32[j] |= (1 << i); 1357 if (b) 1358 m->addr32[j] = htonl(m->addr32[j]); 1359 1360 /* Mask off bits of the address that will never be used. */ 1361 n = &h->addr.v.a.addr; 1362 if (h->addr.type == PF_ADDR_ADDRMASK) 1363 for (i = 0; i < 4; i++) 1364 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1365 } 1366 1367 int 1368 check_netmask(struct node_host *h, sa_family_t af) 1369 { 1370 struct node_host *n = NULL; 1371 struct pf_addr *m; 1372 1373 for (n = h; n != NULL; n = n->next) { 1374 if (h->addr.type == PF_ADDR_TABLE) 1375 continue; 1376 m = &h->addr.v.a.mask; 1377 /* netmasks > 32 bit are invalid on v4 */ 1378 if (af == AF_INET && 1379 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1380 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1381 unmask(m)); 1382 return (1); 1383 } 1384 } 1385 return (0); 1386 } 1387 1388 struct node_host * 1389 gen_dynnode(struct node_host *h, sa_family_t af) 1390 { 1391 struct node_host *n; 1392 1393 if (h->addr.type != PF_ADDR_DYNIFTL) 1394 return (NULL); 1395 1396 if ((n = calloc(1, sizeof(*n))) == NULL) 1397 return (NULL); 1398 bcopy(h, n, sizeof(*n)); 1399 n->ifname = NULL; 1400 n->next = NULL; 1401 n->tail = NULL; 1402 1403 /* fix up netmask */ 1404 if (af == AF_INET && unmask(&n->addr.v.a.mask) > 32) 1405 set_ipmask(n, 32); 1406 1407 return (n); 1408 } 1409 1410 /* interface lookup routines */ 1411 1412 static struct node_host *iftab; 1413 1414 /* 1415 * Retrieve the list of groups this interface is a member of and make sure 1416 * each group is in the group map. 1417 */ 1418 static void 1419 ifa_add_groups_to_map(char *ifa_name) 1420 { 1421 int s, len; 1422 struct ifgroupreq ifgr; 1423 struct ifg_req *ifg; 1424 1425 s = get_query_socket(); 1426 1427 /* Get size of group list for this interface */ 1428 memset(&ifgr, 0, sizeof(ifgr)); 1429 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1430 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1431 err(1, "SIOCGIFGROUP"); 1432 1433 /* Retrieve group list for this interface */ 1434 len = ifgr.ifgr_len; 1435 ifgr.ifgr_groups = 1436 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1437 sizeof(struct ifg_req)); 1438 if (ifgr.ifgr_groups == NULL) 1439 err(1, "calloc"); 1440 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1441 err(1, "SIOCGIFGROUP"); 1442 1443 ifg = ifgr.ifgr_groups; 1444 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1445 len -= sizeof(struct ifg_req); 1446 if (strcmp(ifg->ifgrq_group, "all")) { 1447 ENTRY item; 1448 ENTRY *ret_item; 1449 int *answer; 1450 1451 item.key = ifg->ifgrq_group; 1452 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1453 struct ifgroupreq ifgr2; 1454 1455 /* Don't know the answer yet */ 1456 if ((answer = malloc(sizeof(int))) == NULL) 1457 err(1, "malloc"); 1458 1459 bzero(&ifgr2, sizeof(ifgr2)); 1460 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1461 sizeof(ifgr2.ifgr_name)); 1462 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1463 *answer = ifgr2.ifgr_len; 1464 else 1465 *answer = 0; 1466 1467 item.key = strdup(ifg->ifgrq_group); 1468 item.data = answer; 1469 if (hsearch_r(item, ENTER, &ret_item, 1470 &isgroup_map) == 0) 1471 err(1, "interface group query response" 1472 " map insert"); 1473 } 1474 } 1475 } 1476 free(ifgr.ifgr_groups); 1477 } 1478 1479 void 1480 ifa_load(void) 1481 { 1482 struct ifaddrs *ifap, *ifa; 1483 struct node_host *n = NULL, *h = NULL; 1484 1485 if (getifaddrs(&ifap) < 0) 1486 err(1, "getifaddrs"); 1487 1488 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1489 if (!(ifa->ifa_addr->sa_family == AF_INET || 1490 ifa->ifa_addr->sa_family == AF_INET6 || 1491 ifa->ifa_addr->sa_family == AF_LINK)) 1492 continue; 1493 n = calloc(1, sizeof(struct node_host)); 1494 if (n == NULL) 1495 err(1, "%s: calloc", __func__); 1496 n->af = ifa->ifa_addr->sa_family; 1497 n->ifa_flags = ifa->ifa_flags; 1498 #ifdef __KAME__ 1499 if (n->af == AF_INET6 && 1500 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1501 ifa->ifa_addr)->sin6_addr) && 1502 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1503 0) { 1504 struct sockaddr_in6 *sin6; 1505 1506 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1507 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1508 sin6->sin6_addr.s6_addr[3]; 1509 sin6->sin6_addr.s6_addr[2] = 0; 1510 sin6->sin6_addr.s6_addr[3] = 0; 1511 } 1512 #endif 1513 n->ifindex = 0; 1514 if (n->af == AF_LINK) { 1515 n->ifindex = ((struct sockaddr_dl *) 1516 ifa->ifa_addr)->sdl_index; 1517 ifa_add_groups_to_map(ifa->ifa_name); 1518 } else { 1519 copy_satopfaddr(&n->addr.v.a.addr, ifa->ifa_addr); 1520 ifa->ifa_netmask->sa_family = ifa->ifa_addr->sa_family; 1521 copy_satopfaddr(&n->addr.v.a.mask, ifa->ifa_netmask); 1522 if (ifa->ifa_broadaddr != NULL) { 1523 ifa->ifa_broadaddr->sa_family = ifa->ifa_addr->sa_family; 1524 copy_satopfaddr(&n->bcast, ifa->ifa_broadaddr); 1525 } 1526 if (ifa->ifa_dstaddr != NULL) { 1527 ifa->ifa_dstaddr->sa_family = ifa->ifa_addr->sa_family; 1528 copy_satopfaddr(&n->peer, ifa->ifa_dstaddr); 1529 } 1530 if (n->af == AF_INET6) 1531 n->ifindex = ((struct sockaddr_in6 *) 1532 ifa->ifa_addr) ->sin6_scope_id; 1533 } 1534 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1535 err(1, "%s: strdup", __func__); 1536 n->next = NULL; 1537 n->tail = n; 1538 if (h == NULL) 1539 h = n; 1540 else { 1541 h->tail->next = n; 1542 h->tail = n; 1543 } 1544 } 1545 1546 iftab = h; 1547 freeifaddrs(ifap); 1548 } 1549 1550 static int 1551 get_socket_domain(void) 1552 { 1553 int sdom; 1554 1555 sdom = AF_UNSPEC; 1556 #ifdef WITH_INET6 1557 if (sdom == AF_UNSPEC && feature_present("inet6")) 1558 sdom = AF_INET6; 1559 #endif 1560 #ifdef WITH_INET 1561 if (sdom == AF_UNSPEC && feature_present("inet")) 1562 sdom = AF_INET; 1563 #endif 1564 if (sdom == AF_UNSPEC) 1565 sdom = AF_LINK; 1566 1567 return (sdom); 1568 } 1569 1570 int 1571 get_query_socket(void) 1572 { 1573 static int s = -1; 1574 1575 if (s == -1) { 1576 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1577 err(1, "socket"); 1578 } 1579 1580 return (s); 1581 } 1582 1583 /* 1584 * Returns the response len if the name is a group, otherwise returns 0. 1585 */ 1586 static int 1587 is_a_group(char *name) 1588 { 1589 ENTRY item; 1590 ENTRY *ret_item; 1591 1592 item.key = name; 1593 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1594 return (0); 1595 1596 return (*(int *)ret_item->data); 1597 } 1598 1599 unsigned int 1600 ifa_nametoindex(const char *ifa_name) 1601 { 1602 struct node_host *p; 1603 1604 for (p = iftab; p; p = p->next) { 1605 if (p->af == AF_LINK && strcmp(p->ifname, ifa_name) == 0) 1606 return (p->ifindex); 1607 } 1608 errno = ENXIO; 1609 return (0); 1610 } 1611 1612 char * 1613 ifa_indextoname(unsigned int ifindex, char *ifa_name) 1614 { 1615 struct node_host *p; 1616 1617 for (p = iftab; p; p = p->next) { 1618 if (p->af == AF_LINK && ifindex == p->ifindex) { 1619 strlcpy(ifa_name, p->ifname, IFNAMSIZ); 1620 return (ifa_name); 1621 } 1622 } 1623 errno = ENXIO; 1624 return (NULL); 1625 } 1626 1627 struct node_host * 1628 ifa_exists(char *ifa_name) 1629 { 1630 struct node_host *n; 1631 1632 if (iftab == NULL) 1633 ifa_load(); 1634 1635 /* check whether this is a group */ 1636 if (is_a_group(ifa_name)) { 1637 /* fake a node_host */ 1638 if ((n = calloc(1, sizeof(*n))) == NULL) 1639 err(1, "calloc"); 1640 if ((n->ifname = strdup(ifa_name)) == NULL) 1641 err(1, "strdup"); 1642 return (n); 1643 } 1644 1645 for (n = iftab; n; n = n->next) { 1646 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1647 return (n); 1648 } 1649 1650 return (NULL); 1651 } 1652 1653 struct node_host * 1654 ifa_grouplookup(char *ifa_name, int flags) 1655 { 1656 struct ifg_req *ifg; 1657 struct ifgroupreq ifgr; 1658 int s, len; 1659 struct node_host *n, *h = NULL; 1660 1661 s = get_query_socket(); 1662 len = is_a_group(ifa_name); 1663 if (len == 0) 1664 return (NULL); 1665 bzero(&ifgr, sizeof(ifgr)); 1666 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1667 ifgr.ifgr_len = len; 1668 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1669 err(1, "calloc"); 1670 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1671 err(1, "SIOCGIFGMEMB"); 1672 1673 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1674 ifg++) { 1675 len -= sizeof(struct ifg_req); 1676 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1677 continue; 1678 if (h == NULL) 1679 h = n; 1680 else { 1681 h->tail->next = n; 1682 h->tail = n->tail; 1683 } 1684 } 1685 free(ifgr.ifgr_groups); 1686 1687 return (h); 1688 } 1689 1690 struct node_host * 1691 ifa_lookup(char *ifa_name, int flags) 1692 { 1693 struct node_host *p = NULL, *h = NULL, *n = NULL; 1694 int got4 = 0, got6 = 0; 1695 const char *last_if = NULL; 1696 1697 /* first load iftab and isgroup_map */ 1698 if (iftab == NULL) 1699 ifa_load(); 1700 1701 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1702 return (h); 1703 1704 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1705 ifa_name = NULL; 1706 1707 for (p = iftab; p; p = p->next) { 1708 if (ifa_skip_if(ifa_name, p)) 1709 continue; 1710 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1711 continue; 1712 if ((flags & PFI_AFLAG_BROADCAST) && 1713 !(p->ifa_flags & IFF_BROADCAST)) 1714 continue; 1715 if ((flags & PFI_AFLAG_BROADCAST) && p->bcast.v4.s_addr == 0) 1716 continue; 1717 if ((flags & PFI_AFLAG_PEER) && 1718 !(p->ifa_flags & IFF_POINTOPOINT)) 1719 continue; 1720 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1721 continue; 1722 if (last_if == NULL || strcmp(last_if, p->ifname)) 1723 got4 = got6 = 0; 1724 last_if = p->ifname; 1725 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1726 continue; 1727 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1728 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1729 continue; 1730 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1731 continue; 1732 if (p->af == AF_INET) 1733 got4 = 1; 1734 else 1735 got6 = 1; 1736 n = calloc(1, sizeof(struct node_host)); 1737 if (n == NULL) 1738 err(1, "%s: calloc", __func__); 1739 n->af = p->af; 1740 if (flags & PFI_AFLAG_BROADCAST) 1741 memcpy(&n->addr.v.a.addr, &p->bcast, 1742 sizeof(struct pf_addr)); 1743 else if (flags & PFI_AFLAG_PEER) 1744 memcpy(&n->addr.v.a.addr, &p->peer, 1745 sizeof(struct pf_addr)); 1746 else 1747 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1748 sizeof(struct pf_addr)); 1749 if (flags & PFI_AFLAG_NETWORK) 1750 set_ipmask(n, unmask(&p->addr.v.a.mask)); 1751 else 1752 set_ipmask(n, -1); 1753 n->ifindex = p->ifindex; 1754 n->ifname = strdup(p->ifname); 1755 1756 n->next = NULL; 1757 n->tail = n; 1758 if (h == NULL) 1759 h = n; 1760 else { 1761 h->tail->next = n; 1762 h->tail = n; 1763 } 1764 } 1765 return (h); 1766 } 1767 1768 int 1769 ifa_skip_if(const char *filter, struct node_host *p) 1770 { 1771 int n; 1772 1773 if (p->af != AF_INET && p->af != AF_INET6) 1774 return (1); 1775 if (filter == NULL || !*filter) 1776 return (0); 1777 if (!strcmp(p->ifname, filter)) 1778 return (0); /* exact match */ 1779 n = strlen(filter); 1780 if (n < 1 || n >= IFNAMSIZ) 1781 return (1); /* sanity check */ 1782 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1783 return (1); /* only do exact match in that case */ 1784 if (strncmp(p->ifname, filter, n)) 1785 return (1); /* prefix doesn't match */ 1786 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1787 } 1788 1789 1790 struct node_host * 1791 host(const char *s, int opts) 1792 { 1793 struct node_host *h = NULL; 1794 int mask = -1; 1795 char *p, *ps; 1796 const char *errstr; 1797 1798 if ((p = strrchr(s, '/')) != NULL) { 1799 mask = strtonum(p+1, 0, 128, &errstr); 1800 if (errstr) { 1801 fprintf(stderr, "netmask is %s: %s\n", errstr, p); 1802 goto error; 1803 } 1804 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1805 err(1, "%s: malloc", __func__); 1806 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1807 } else { 1808 if ((ps = strdup(s)) == NULL) 1809 err(1, "%s: strdup", __func__); 1810 } 1811 1812 if ((h = host_ip(ps, mask)) == NULL && 1813 (h = host_if(ps, mask)) == NULL && 1814 (h = host_dns(ps, mask, (opts & PF_OPT_NODNS))) == NULL) { 1815 fprintf(stderr, "no IP address found for %s\n", s); 1816 goto error; 1817 } 1818 1819 error: 1820 free(ps); 1821 return (h); 1822 } 1823 1824 struct node_host * 1825 host_if(const char *s, int mask) 1826 { 1827 struct node_host *n, *h = NULL; 1828 char *p, *ps; 1829 int flags = 0; 1830 1831 if ((ps = strdup(s)) == NULL) 1832 err(1, "host_if: strdup"); 1833 while ((p = strrchr(ps, ':')) != NULL) { 1834 if (!strcmp(p+1, "network")) 1835 flags |= PFI_AFLAG_NETWORK; 1836 else if (!strcmp(p+1, "broadcast")) 1837 flags |= PFI_AFLAG_BROADCAST; 1838 else if (!strcmp(p+1, "peer")) 1839 flags |= PFI_AFLAG_PEER; 1840 else if (!strcmp(p+1, "0")) 1841 flags |= PFI_AFLAG_NOALIAS; 1842 else 1843 goto error; 1844 *p = '\0'; 1845 } 1846 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1847 fprintf(stderr, "illegal combination of interface modifiers\n"); 1848 goto error; 1849 } 1850 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1851 fprintf(stderr, "network or broadcast lookup, but " 1852 "extra netmask given\n"); 1853 goto error; 1854 } 1855 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1856 /* interface with this name exists */ 1857 h = ifa_lookup(ps, flags); 1858 if (mask > -1) 1859 for (n = h; n != NULL; n = n->next) 1860 set_ipmask(n, mask); 1861 } 1862 1863 error: 1864 free(ps); 1865 return (h); 1866 } 1867 1868 struct node_host * 1869 host_ip(const char *s, int mask) 1870 { 1871 struct addrinfo hints, *res; 1872 struct node_host *h = NULL; 1873 1874 h = calloc(1, sizeof(*h)); 1875 if (h == NULL) 1876 err(1, "%s: calloc", __func__); 1877 if (mask != -1) { 1878 /* Try to parse 10/8 */ 1879 h->af = AF_INET; 1880 if (inet_net_pton(AF_INET, s, &h->addr.v.a.addr.v4, 1881 sizeof(h->addr.v.a.addr.v4)) != -1) 1882 goto out; 1883 } 1884 1885 memset(&hints, 0, sizeof(hints)); 1886 hints.ai_family = AF_UNSPEC; 1887 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1888 hints.ai_flags = AI_NUMERICHOST; 1889 if (getaddrinfo(s, NULL, &hints, &res) == 0) { 1890 h->af = res->ai_family; 1891 copy_satopfaddr(&h->addr.v.a.addr, res->ai_addr); 1892 if (h->af == AF_INET6) 1893 h->ifindex = 1894 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1895 freeaddrinfo(res); 1896 } else { 1897 free(h); 1898 return (NULL); 1899 } 1900 out: 1901 set_ipmask(h, mask); 1902 h->ifname = NULL; 1903 h->next = NULL; 1904 h->tail = h; 1905 1906 return (h); 1907 } 1908 1909 struct node_host * 1910 host_dns(const char *s, int mask, int numeric) 1911 { 1912 struct addrinfo hints, *res0, *res; 1913 struct node_host *n, *h = NULL; 1914 int noalias = 0, got4 = 0, got6 = 0; 1915 char *p, *ps; 1916 1917 if ((ps = strdup(s)) == NULL) 1918 err(1, "host_dns: strdup"); 1919 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1920 noalias = 1; 1921 *p = '\0'; 1922 } 1923 memset(&hints, 0, sizeof(hints)); 1924 hints.ai_family = PF_UNSPEC; 1925 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1926 if (numeric) 1927 hints.ai_flags = AI_NUMERICHOST; 1928 if (getaddrinfo(ps, NULL, &hints, &res0) != 0) 1929 goto error; 1930 1931 for (res = res0; res; res = res->ai_next) { 1932 if (res->ai_family != AF_INET && 1933 res->ai_family != AF_INET6) 1934 continue; 1935 if (noalias) { 1936 if (res->ai_family == AF_INET) { 1937 if (got4) 1938 continue; 1939 got4 = 1; 1940 } else { 1941 if (got6) 1942 continue; 1943 got6 = 1; 1944 } 1945 } 1946 n = calloc(1, sizeof(struct node_host)); 1947 if (n == NULL) 1948 err(1, "host_dns: calloc"); 1949 n->ifname = NULL; 1950 n->af = res->ai_family; 1951 copy_satopfaddr(&n->addr.v.a.addr, res->ai_addr); 1952 if (res->ai_family == AF_INET6) 1953 n->ifindex = 1954 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1955 set_ipmask(n, mask); 1956 n->next = NULL; 1957 n->tail = n; 1958 if (h == NULL) 1959 h = n; 1960 else { 1961 h->tail->next = n; 1962 h->tail = n; 1963 } 1964 } 1965 freeaddrinfo(res0); 1966 error: 1967 free(ps); 1968 1969 return (h); 1970 } 1971 1972 /* 1973 * convert a hostname to a list of addresses and put them in the given buffer. 1974 * test: 1975 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1976 */ 1977 int 1978 append_addr(struct pfr_buffer *b, char *s, int test, int opts) 1979 { 1980 char *r; 1981 struct node_host *h, *n; 1982 int rv, not = 0; 1983 1984 for (r = s; *r == '!'; r++) 1985 not = !not; 1986 if ((n = host(r, opts)) == NULL) { 1987 errno = 0; 1988 return (-1); 1989 } 1990 rv = append_addr_host(b, n, test, not); 1991 do { 1992 h = n; 1993 n = n->next; 1994 free(h); 1995 } while (n != NULL); 1996 return (rv); 1997 } 1998 1999 /* 2000 * same as previous function, but with a pre-parsed input and the ability 2001 * to "negate" the result. Does not free the node_host list. 2002 * not: 2003 * setting it to 1 is equivalent to adding "!" in front of parameter s. 2004 */ 2005 int 2006 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 2007 { 2008 int bits; 2009 struct pfr_addr addr; 2010 2011 do { 2012 bzero(&addr, sizeof(addr)); 2013 addr.pfra_not = n->not ^ not; 2014 addr.pfra_af = n->af; 2015 addr.pfra_net = unmask(&n->addr.v.a.mask); 2016 switch (n->af) { 2017 case AF_INET: 2018 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 2019 bits = 32; 2020 break; 2021 case AF_INET6: 2022 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 2023 sizeof(struct in6_addr)); 2024 bits = 128; 2025 break; 2026 default: 2027 errno = EINVAL; 2028 return (-1); 2029 } 2030 if ((test && (not || addr.pfra_net != bits)) || 2031 addr.pfra_net > bits) { 2032 errno = EINVAL; 2033 return (-1); 2034 } 2035 if (pfr_buf_add(b, &addr)) 2036 return (-1); 2037 } while ((n = n->next) != NULL); 2038 2039 return (0); 2040 } 2041 2042 int 2043 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 2044 { 2045 struct pfioc_trans_e trans; 2046 2047 bzero(&trans, sizeof(trans)); 2048 trans.rs_num = rs_num; 2049 if (strlcpy(trans.anchor, anchor, 2050 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 2051 errx(1, "pfctl_add_trans: strlcpy"); 2052 2053 return pfr_buf_add(buf, &trans); 2054 } 2055 2056 u_int32_t 2057 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 2058 { 2059 struct pfioc_trans_e *p; 2060 2061 PFRB_FOREACH(p, buf) 2062 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 2063 return (p->ticket); 2064 errx(1, "pfctl_get_ticket: assertion failed"); 2065 } 2066 2067 int 2068 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 2069 { 2070 struct pfioc_trans trans; 2071 2072 bzero(&trans, sizeof(trans)); 2073 trans.size = buf->pfrb_size - from; 2074 trans.esize = sizeof(struct pfioc_trans_e); 2075 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 2076 return ioctl(dev, cmd, &trans); 2077 } 2078