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, unsigned, unsigned, const char *, unsigned); 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, int *); 78 struct node_host *host_v4(const char *, int); 79 struct node_host *host_v6(const char *, int); 80 struct node_host *host_dns(const char *, int, 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 }; 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 const struct icmptypeent * 232 geticmptypebynumber(u_int8_t type, sa_family_t af) 233 { 234 unsigned int i; 235 236 if (af != AF_INET6) { 237 for (i=0; i < nitems(icmp_type); i++) { 238 if (type == icmp_type[i].type) 239 return (&icmp_type[i]); 240 } 241 } else { 242 for (i=0; i < nitems(icmp6_type); i++) { 243 if (type == icmp6_type[i].type) 244 return (&icmp6_type[i]); 245 } 246 } 247 return (NULL); 248 } 249 250 const struct icmptypeent * 251 geticmptypebyname(char *w, sa_family_t af) 252 { 253 unsigned int i; 254 255 if (af != AF_INET6) { 256 for (i=0; i < nitems(icmp_type); i++) { 257 if (!strcmp(w, icmp_type[i].name)) 258 return (&icmp_type[i]); 259 } 260 } else { 261 for (i=0; i < nitems(icmp6_type); i++) { 262 if (!strcmp(w, icmp6_type[i].name)) 263 return (&icmp6_type[i]); 264 } 265 } 266 return (NULL); 267 } 268 269 const struct icmpcodeent * 270 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 271 { 272 unsigned int i; 273 274 if (af != AF_INET6) { 275 for (i=0; i < nitems(icmp_code); i++) { 276 if (type == icmp_code[i].type && 277 code == icmp_code[i].code) 278 return (&icmp_code[i]); 279 } 280 } else { 281 for (i=0; i < nitems(icmp6_code); i++) { 282 if (type == icmp6_code[i].type && 283 code == icmp6_code[i].code) 284 return (&icmp6_code[i]); 285 } 286 } 287 return (NULL); 288 } 289 290 const struct icmpcodeent * 291 geticmpcodebyname(u_long type, char *w, sa_family_t af) 292 { 293 unsigned int i; 294 295 if (af != AF_INET6) { 296 for (i=0; i < nitems(icmp_code); i++) { 297 if (type == icmp_code[i].type && 298 !strcmp(w, icmp_code[i].name)) 299 return (&icmp_code[i]); 300 } 301 } else { 302 for (i=0; i < nitems(icmp6_code); i++) { 303 if (type == icmp6_code[i].type && 304 !strcmp(w, icmp6_code[i].name)) 305 return (&icmp6_code[i]); 306 } 307 } 308 return (NULL); 309 } 310 311 void 312 print_op(u_int8_t op, const char *a1, const char *a2) 313 { 314 if (op == PF_OP_IRG) 315 printf(" %s >< %s", a1, a2); 316 else if (op == PF_OP_XRG) 317 printf(" %s <> %s", a1, a2); 318 else if (op == PF_OP_EQ) 319 printf(" = %s", a1); 320 else if (op == PF_OP_NE) 321 printf(" != %s", a1); 322 else if (op == PF_OP_LT) 323 printf(" < %s", a1); 324 else if (op == PF_OP_LE) 325 printf(" <= %s", a1); 326 else if (op == PF_OP_GT) 327 printf(" > %s", a1); 328 else if (op == PF_OP_GE) 329 printf(" >= %s", a1); 330 else if (op == PF_OP_RRG) 331 printf(" %s:%s", a1, a2); 332 } 333 334 void 335 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric) 336 { 337 char a1[6], a2[6]; 338 struct servent *s; 339 340 if (!numeric) 341 s = getservbyport(p1, proto); 342 else 343 s = NULL; 344 p1 = ntohs(p1); 345 p2 = ntohs(p2); 346 snprintf(a1, sizeof(a1), "%u", p1); 347 snprintf(a2, sizeof(a2), "%u", p2); 348 printf(" port"); 349 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 350 print_op(op, s->s_name, a2); 351 else 352 print_op(op, a1, a2); 353 } 354 355 void 356 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 357 { 358 char a1[11], a2[11]; 359 360 snprintf(a1, sizeof(a1), "%u", u1); 361 snprintf(a2, sizeof(a2), "%u", u2); 362 printf(" %s", t); 363 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 364 print_op(op, "unknown", a2); 365 else 366 print_op(op, a1, a2); 367 } 368 369 void 370 print_flags(uint16_t f) 371 { 372 int i; 373 374 for (i = 0; tcpflags[i]; ++i) 375 if (f & (1 << i)) 376 printf("%c", tcpflags[i]); 377 } 378 379 void 380 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 381 sa_family_t af, u_int8_t proto, int verbose, int numeric) 382 { 383 char buf[PF_OSFP_LEN*3]; 384 if (src->addr.type == PF_ADDR_ADDRMASK && 385 dst->addr.type == PF_ADDR_ADDRMASK && 386 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 387 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 388 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 389 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 390 !src->neg && !dst->neg && 391 !src->port_op && !dst->port_op && 392 osfp == PF_OSFP_ANY) 393 printf(" all"); 394 else { 395 printf(" from "); 396 if (src->neg) 397 printf("! "); 398 print_addr(&src->addr, af, verbose); 399 if (src->port_op) 400 print_port(src->port_op, src->port[0], 401 src->port[1], 402 proto == IPPROTO_TCP ? "tcp" : "udp", 403 numeric); 404 if (osfp != PF_OSFP_ANY) 405 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 406 sizeof(buf))); 407 408 printf(" to "); 409 if (dst->neg) 410 printf("! "); 411 print_addr(&dst->addr, af, verbose); 412 if (dst->port_op) 413 print_port(dst->port_op, dst->port[0], 414 dst->port[1], 415 proto == IPPROTO_TCP ? "tcp" : "udp", 416 numeric); 417 } 418 } 419 420 void 421 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2, 422 sa_family_t af, int id) 423 { 424 struct pf_pooladdr *pooladdr; 425 426 if ((TAILQ_FIRST(&pool->list) != NULL) && 427 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 428 printf("{ "); 429 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 430 switch (id) { 431 case PF_NAT: 432 case PF_RDR: 433 case PF_BINAT: 434 print_addr(&pooladdr->addr, af, 0); 435 break; 436 case PF_PASS: 437 case PF_MATCH: 438 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 439 printf("%s", pooladdr->ifname); 440 else { 441 printf("(%s ", pooladdr->ifname); 442 print_addr(&pooladdr->addr, af, 0); 443 printf(")"); 444 } 445 break; 446 default: 447 break; 448 } 449 if (TAILQ_NEXT(pooladdr, entries) != NULL) 450 printf(", "); 451 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 452 printf(" }"); 453 } 454 switch (id) { 455 case PF_NAT: 456 if ((p1 != PF_NAT_PROXY_PORT_LOW || 457 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 458 if (p1 == p2) 459 printf(" port %u", p1); 460 else 461 printf(" port %u:%u", p1, p2); 462 } 463 break; 464 case PF_RDR: 465 if (p1) { 466 printf(" port %u", p1); 467 if (p2 && (p2 != p1)) 468 printf(":%u", p2); 469 } 470 break; 471 default: 472 break; 473 } 474 switch (pool->opts & PF_POOL_TYPEMASK) { 475 case PF_POOL_NONE: 476 break; 477 case PF_POOL_BITMASK: 478 printf(" bitmask"); 479 break; 480 case PF_POOL_RANDOM: 481 printf(" random"); 482 break; 483 case PF_POOL_SRCHASH: 484 printf(" source-hash 0x%08x%08x%08x%08x", 485 pool->key.key32[0], pool->key.key32[1], 486 pool->key.key32[2], pool->key.key32[3]); 487 break; 488 case PF_POOL_ROUNDROBIN: 489 printf(" round-robin"); 490 break; 491 } 492 if (pool->opts & PF_POOL_STICKYADDR) 493 printf(" sticky-address"); 494 if (pool->opts & PF_POOL_ENDPI) 495 printf(" endpoint-independent"); 496 if (id == PF_NAT && p1 == 0 && p2 == 0) 497 printf(" static-port"); 498 if (pool->mape.offset > 0) 499 printf(" map-e-portset %u/%u/%u", 500 pool->mape.offset, pool->mape.psidlen, pool->mape.psid); 501 } 502 503 void 504 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts) 505 { 506 struct pfctl_status_counter *c; 507 char statline[80], *running; 508 time_t runtime; 509 int i; 510 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 511 static const char hex[] = "0123456789abcdef"; 512 513 runtime = time(NULL) - s->since; 514 running = s->running ? "Enabled" : "Disabled"; 515 516 if (s->since) { 517 unsigned int sec, min, hrs; 518 time_t day = runtime; 519 520 sec = day % 60; 521 day /= 60; 522 min = day % 60; 523 day /= 60; 524 hrs = day % 24; 525 day /= 24; 526 snprintf(statline, sizeof(statline), 527 "Status: %s for %lld days %.2u:%.2u:%.2u", 528 running, (long long)day, hrs, min, sec); 529 } else 530 snprintf(statline, sizeof(statline), "Status: %s", running); 531 printf("%-44s", statline); 532 switch (s->debug) { 533 case PF_DEBUG_NONE: 534 printf("%15s\n\n", "Debug: None"); 535 break; 536 case PF_DEBUG_URGENT: 537 printf("%15s\n\n", "Debug: Urgent"); 538 break; 539 case PF_DEBUG_MISC: 540 printf("%15s\n\n", "Debug: Misc"); 541 break; 542 case PF_DEBUG_NOISY: 543 printf("%15s\n\n", "Debug: Loud"); 544 break; 545 } 546 547 if (opts & PF_OPT_VERBOSE) { 548 printf("Hostid: 0x%08x\n", s->hostid); 549 550 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 551 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 552 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 553 } 554 buf[i + i] = '\0'; 555 printf("Checksum: 0x%s\n\n", buf); 556 } 557 558 if (s->ifname[0] != 0) { 559 printf("Interface Stats for %-16s %5s %16s\n", 560 s->ifname, "IPv4", "IPv6"); 561 printf(" %-25s %14llu %16llu\n", "Bytes In", 562 (unsigned long long)s->bcounters[0][0], 563 (unsigned long long)s->bcounters[1][0]); 564 printf(" %-25s %14llu %16llu\n", "Bytes Out", 565 (unsigned long long)s->bcounters[0][1], 566 (unsigned long long)s->bcounters[1][1]); 567 printf(" Packets In\n"); 568 printf(" %-23s %14llu %16llu\n", "Passed", 569 (unsigned long long)s->pcounters[0][0][PF_PASS], 570 (unsigned long long)s->pcounters[1][0][PF_PASS]); 571 printf(" %-23s %14llu %16llu\n", "Blocked", 572 (unsigned long long)s->pcounters[0][0][PF_DROP], 573 (unsigned long long)s->pcounters[1][0][PF_DROP]); 574 printf(" Packets Out\n"); 575 printf(" %-23s %14llu %16llu\n", "Passed", 576 (unsigned long long)s->pcounters[0][1][PF_PASS], 577 (unsigned long long)s->pcounters[1][1][PF_PASS]); 578 printf(" %-23s %14llu %16llu\n\n", "Blocked", 579 (unsigned long long)s->pcounters[0][1][PF_DROP], 580 (unsigned long long)s->pcounters[1][1][PF_DROP]); 581 } 582 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 583 printf(" %-25s %14ju %14s\n", "current entries", s->states, ""); 584 TAILQ_FOREACH(c, &s->fcounters, entry) { 585 printf(" %-25s %14ju ", c->name, c->counter); 586 if (runtime > 0) 587 printf("%14.1f/s\n", 588 (double)c->counter / (double)runtime); 589 else 590 printf("%14s\n", ""); 591 } 592 if (opts & PF_OPT_VERBOSE) { 593 printf("Source Tracking Table\n"); 594 printf(" %-25s %14ju %14s\n", "current entries", 595 s->src_nodes, ""); 596 TAILQ_FOREACH(c, &s->scounters, 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 } 605 printf("Counters\n"); 606 TAILQ_FOREACH(c, &s->counters, 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 if (opts & PF_OPT_VERBOSE) { 615 printf("Limit Counters\n"); 616 TAILQ_FOREACH(c, &s->lcounters, 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 } 624 625 printf("Syncookies\n"); 626 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE); 627 printf(" %-25s %s\n", "mode", 628 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]); 629 printf(" %-25s %s\n", "active", 630 s->syncookies_active ? "active" : "inactive"); 631 if (opts & PF_OPT_VERBOSE2) { 632 printf(" %-25s %d %%\n", "highwater", cookies->highwater); 633 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater); 634 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states); 635 } 636 printf("Reassemble %24s %s\n", 637 s->reass & PF_REASS_ENABLED ? "yes" : "no", 638 s->reass & PF_REASS_NODF ? "no-df" : "" 639 ); 640 } 641 } 642 643 void 644 print_running(struct pfctl_status *status) 645 { 646 printf("%s\n", status->running ? "Enabled" : "Disabled"); 647 } 648 649 void 650 print_src_node(struct pfctl_src_node *sn, int opts) 651 { 652 struct pf_addr_wrap aw; 653 uint64_t min, sec; 654 const char *sn_type_names[] = PF_SN_TYPE_NAMES; 655 656 memset(&aw, 0, sizeof(aw)); 657 if (sn->af == AF_INET) 658 aw.v.a.mask.addr32[0] = 0xffffffff; 659 else 660 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 661 662 aw.v.a.addr = sn->addr; 663 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 664 printf(" -> "); 665 aw.v.a.addr = sn->raddr; 666 print_addr(&aw, sn->naf ? sn->naf : sn->af, opts & PF_OPT_VERBOSE2); 667 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 668 sn->conn, sn->conn_rate.count / 1000, 669 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 670 if (opts & PF_OPT_VERBOSE) { 671 sec = sn->creation % 60; 672 sn->creation /= 60; 673 min = sn->creation % 60; 674 sn->creation /= 60; 675 printf(" age %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64, 676 sn->creation, min, sec); 677 if (sn->states == 0) { 678 sec = sn->expire % 60; 679 sn->expire /= 60; 680 min = sn->expire % 60; 681 sn->expire /= 60; 682 printf(", expires in %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64, 683 sn->expire, min, sec); 684 } 685 printf(", %" PRIu64 " pkts, %" PRIu64 " bytes", 686 sn->packets[0] + sn->packets[1], 687 sn->bytes[0] + sn->bytes[1]); 688 switch (sn->ruletype) { 689 case PF_NAT: 690 if (sn->rule != -1) 691 printf(", nat rule %u", sn->rule); 692 break; 693 case PF_RDR: 694 if (sn->rule != -1) 695 printf(", rdr rule %u", sn->rule); 696 break; 697 case PF_PASS: 698 case PF_MATCH: 699 if (sn->rule != -1) 700 printf(", filter rule %u", sn->rule); 701 break; 702 } 703 printf(", %s", sn_type_names[sn->type]); 704 printf("\n"); 705 } 706 } 707 708 static void 709 print_eth_addr(const struct pfctl_eth_addr *a) 710 { 711 int i, masklen = ETHER_ADDR_LEN * 8; 712 bool seen_unset = false; 713 714 for (i = 0; i < ETHER_ADDR_LEN; i++) { 715 if (a->addr[i] != 0) 716 break; 717 } 718 719 /* Unset, so don't print anything. */ 720 if (i == ETHER_ADDR_LEN) 721 return; 722 723 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "", 724 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4], 725 a->addr[5]); 726 727 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) { 728 bool isset = a->mask[i / 8] & (1 << i % 8); 729 730 if (! seen_unset) { 731 if (isset) 732 continue; 733 seen_unset = true; 734 masklen = i; 735 } else { 736 /* Not actually a continuous mask, so print the whole 737 * thing. */ 738 if (isset) 739 break; 740 continue; 741 } 742 } 743 744 if (masklen == (ETHER_ADDR_LEN * 8)) 745 return; 746 747 if (i == (ETHER_ADDR_LEN * 8)) { 748 printf("/%d", masklen); 749 return; 750 } 751 752 printf("&%02x:%02x:%02x:%02x:%02x:%02x", 753 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4], 754 a->mask[5]); 755 } 756 757 void 758 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call, 759 int rule_numbers) 760 { 761 static const char *actiontypes[] = { "pass", "block", "", "", "", "", 762 "", "", "", "", "", "", "match" }; 763 764 int i; 765 766 if (rule_numbers) 767 printf("@%u ", r->nr); 768 769 printf("ether "); 770 if (anchor_call[0]) { 771 if (anchor_call[0] == '_') { 772 printf("anchor"); 773 } else 774 printf("anchor \"%s\"", anchor_call); 775 } else { 776 printf("%s", actiontypes[r->action]); 777 } 778 if (r->direction == PF_IN) 779 printf(" in"); 780 else if (r->direction == PF_OUT) 781 printf(" out"); 782 783 if (r->quick) 784 printf(" quick"); 785 if (r->ifname[0]) { 786 if (r->ifnot) 787 printf(" on ! %s", r->ifname); 788 else 789 printf(" on %s", r->ifname); 790 } 791 if (r->bridge_to[0]) 792 printf(" bridge-to %s", r->bridge_to); 793 if (r->proto) 794 printf(" proto 0x%04x", r->proto); 795 796 if (r->src.isset) { 797 printf(" from "); 798 print_eth_addr(&r->src); 799 } 800 if (r->dst.isset) { 801 printf(" to "); 802 print_eth_addr(&r->dst); 803 } 804 printf(" l3"); 805 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst, 806 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0, 807 0, 0); 808 809 i = 0; 810 while (r->label[i][0]) 811 printf(" label \"%s\"", r->label[i++]); 812 if (r->ridentifier) 813 printf(" ridentifier %u", r->ridentifier); 814 815 if (r->qname[0]) 816 printf(" queue %s", r->qname); 817 if (r->tagname[0]) 818 printf(" tag %s", r->tagname); 819 if (r->match_tagname[0]) { 820 if (r->match_tag_not) 821 printf(" !"); 822 printf(" tagged %s", r->match_tagname); 823 } 824 if (r->dnpipe) 825 printf(" %s %d", 826 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 827 r->dnpipe); 828 } 829 830 void 831 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric) 832 { 833 static const char *actiontypes[] = { "pass", "block", "scrub", 834 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr", 835 "", "", "match"}; 836 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 837 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 838 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 839 int i, ropts; 840 char *p; 841 842 if (verbose) 843 printf("@%d ", r->nr); 844 if (r->action == PF_MATCH) 845 printf("match"); 846 else if (r->action > PF_NORDR) 847 printf("action(%d)", r->action); 848 else if (anchor_call[0]) { 849 p = strrchr(anchor_call, '/'); 850 if (p ? p[1] == '_' : anchor_call[0] == '_') 851 printf("%s", anchortypes[r->action]); 852 else 853 printf("%s \"%s\"", anchortypes[r->action], 854 anchor_call); 855 } else { 856 printf("%s", actiontypes[r->action]); 857 if (r->natpass) 858 printf(" pass"); 859 } 860 if (r->action == PF_DROP) { 861 if (r->rule_flag & PFRULE_RETURN) 862 printf(" return"); 863 else if (r->rule_flag & PFRULE_RETURNRST) { 864 if (!r->return_ttl) 865 printf(" return-rst"); 866 else 867 printf(" return-rst(ttl %d)", r->return_ttl); 868 } else if (r->rule_flag & PFRULE_RETURNICMP) { 869 const struct icmpcodeent *ic, *ic6; 870 871 ic = geticmpcodebynumber(r->return_icmp >> 8, 872 r->return_icmp & 255, AF_INET); 873 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 874 r->return_icmp6 & 255, AF_INET6); 875 876 switch (r->af) { 877 case AF_INET: 878 printf(" return-icmp"); 879 if (ic == NULL) 880 printf("(%u)", r->return_icmp & 255); 881 else 882 printf("(%s)", ic->name); 883 break; 884 case AF_INET6: 885 printf(" return-icmp6"); 886 if (ic6 == NULL) 887 printf("(%u)", r->return_icmp6 & 255); 888 else 889 printf("(%s)", ic6->name); 890 break; 891 default: 892 printf(" return-icmp"); 893 if (ic == NULL) 894 printf("(%u, ", r->return_icmp & 255); 895 else 896 printf("(%s, ", ic->name); 897 if (ic6 == NULL) 898 printf("%u)", r->return_icmp6 & 255); 899 else 900 printf("%s)", ic6->name); 901 break; 902 } 903 } else 904 printf(" drop"); 905 } 906 if (r->direction == PF_IN) 907 printf(" in"); 908 else if (r->direction == PF_OUT) 909 printf(" out"); 910 if (r->log) { 911 printf(" log"); 912 if (r->log & ~PF_LOG || r->logif) { 913 int count = 0; 914 915 printf(" ("); 916 if (r->log & PF_LOG_ALL) 917 printf("%sall", count++ ? ", " : ""); 918 if (r->log & PF_LOG_MATCHES) 919 printf("%smatches", count++ ? ", " : ""); 920 if (r->log & PF_LOG_SOCKET_LOOKUP) 921 printf("%suser", count++ ? ", " : ""); 922 if (r->logif) 923 printf("%sto pflog%u", count++ ? ", " : "", 924 r->logif); 925 printf(")"); 926 } 927 } 928 if (r->quick) 929 printf(" quick"); 930 if (r->ifname[0]) { 931 if (r->ifnot) 932 printf(" on ! %s", r->ifname); 933 else 934 printf(" on %s", r->ifname); 935 } 936 if (r->rt) { 937 if (r->rt == PF_ROUTETO) 938 printf(" route-to"); 939 else if (r->rt == PF_REPLYTO) 940 printf(" reply-to"); 941 else if (r->rt == PF_DUPTO) 942 printf(" dup-to"); 943 printf(" "); 944 print_pool(&r->rdr, 0, 0, r->af, PF_PASS); 945 print_pool(&r->route, 0, 0, 946 r->rule_flag & PFRULE_AFTO && r->rt != PF_REPLYTO ? r->naf : r->af, 947 PF_PASS); 948 } 949 if (r->af) { 950 if (r->af == AF_INET) 951 printf(" inet"); 952 else 953 printf(" inet6"); 954 } 955 if (r->proto) { 956 const char *protoname; 957 958 if ((protoname = pfctl_proto2name(r->proto)) != NULL) 959 printf(" proto %s", protoname); 960 else 961 printf(" proto %u", r->proto); 962 } 963 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 964 verbose, numeric); 965 if (r->rcv_ifname[0]) 966 printf(" %sreceived-on %s", r->rcvifnot ? "!" : "", 967 r->rcv_ifname); 968 if (r->uid.op) 969 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 970 UID_MAX); 971 if (r->gid.op) 972 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 973 GID_MAX); 974 if (r->flags || r->flagset) { 975 printf(" flags "); 976 print_flags(r->flags); 977 printf("/"); 978 print_flags(r->flagset); 979 } else if ((r->action == PF_PASS || r->action == PF_MATCH) && 980 (!r->proto || r->proto == IPPROTO_TCP) && 981 !(r->rule_flag & PFRULE_FRAGMENT) && 982 !anchor_call[0] && r->keep_state) 983 printf(" flags any"); 984 if (r->type) { 985 const struct icmptypeent *it; 986 987 it = geticmptypebynumber(r->type-1, r->af); 988 if (r->af != AF_INET6) 989 printf(" icmp-type"); 990 else 991 printf(" icmp6-type"); 992 if (it != NULL) 993 printf(" %s", it->name); 994 else 995 printf(" %u", r->type-1); 996 if (r->code) { 997 const struct icmpcodeent *ic; 998 999 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 1000 if (ic != NULL) 1001 printf(" code %s", ic->name); 1002 else 1003 printf(" code %u", r->code-1); 1004 } 1005 } 1006 if (r->tos) 1007 printf(" tos 0x%2.2x", r->tos); 1008 if (r->prio) 1009 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 1010 if (r->pktrate.limit) 1011 printf(" max-pkt-rate %u/%u", r->pktrate.limit, 1012 r->pktrate.seconds); 1013 if (r->scrub_flags & PFSTATE_SETMASK) { 1014 char *comma = ""; 1015 printf(" set ("); 1016 if (r->scrub_flags & PFSTATE_SETPRIO) { 1017 if (r->set_prio[0] == r->set_prio[1]) 1018 printf("%s prio %u", comma, r->set_prio[0]); 1019 else 1020 printf("%s prio(%u, %u)", comma, r->set_prio[0], 1021 r->set_prio[1]); 1022 comma = ","; 1023 } 1024 if (r->scrub_flags & PFSTATE_SETTOS) { 1025 printf("%s tos 0x%2.2x", comma, r->set_tos); 1026 comma = ","; 1027 } 1028 printf(" )"); 1029 } 1030 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 1031 printf(" no state"); 1032 else if (r->keep_state == PF_STATE_NORMAL) 1033 printf(" keep state"); 1034 else if (r->keep_state == PF_STATE_MODULATE) 1035 printf(" modulate state"); 1036 else if (r->keep_state == PF_STATE_SYNPROXY) 1037 printf(" synproxy state"); 1038 if (r->prob) { 1039 char buf[20]; 1040 1041 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 1042 for (i = strlen(buf)-1; i > 0; i--) { 1043 if (buf[i] == '0') 1044 buf[i] = '\0'; 1045 else { 1046 if (buf[i] == '.') 1047 buf[i] = '\0'; 1048 break; 1049 } 1050 } 1051 printf(" probability %s%%", buf); 1052 } 1053 ropts = 0; 1054 if (r->max_states || r->max_src_nodes || r->max_src_states) 1055 ropts = 1; 1056 if (r->rule_flag & PFRULE_NOSYNC) 1057 ropts = 1; 1058 if (r->rule_flag & PFRULE_SRCTRACK) 1059 ropts = 1; 1060 if (r->rule_flag & PFRULE_IFBOUND) 1061 ropts = 1; 1062 if (r->rule_flag & PFRULE_STATESLOPPY) 1063 ropts = 1; 1064 if (r->rule_flag & PFRULE_PFLOW) 1065 ropts = 1; 1066 for (i = 0; !ropts && i < PFTM_MAX; ++i) 1067 if (r->timeout[i]) 1068 ropts = 1; 1069 if (ropts) { 1070 printf(" ("); 1071 if (r->max_states) { 1072 printf("max %u", r->max_states); 1073 ropts = 0; 1074 } 1075 if (r->rule_flag & PFRULE_NOSYNC) { 1076 if (!ropts) 1077 printf(", "); 1078 printf("no-sync"); 1079 ropts = 0; 1080 } 1081 if (r->rule_flag & PFRULE_SRCTRACK) { 1082 if (!ropts) 1083 printf(", "); 1084 printf("source-track"); 1085 if (r->rule_flag & PFRULE_RULESRCTRACK) 1086 printf(" rule"); 1087 else 1088 printf(" global"); 1089 ropts = 0; 1090 } 1091 if (r->max_src_states) { 1092 if (!ropts) 1093 printf(", "); 1094 printf("max-src-states %u", r->max_src_states); 1095 ropts = 0; 1096 } 1097 if (r->max_src_conn) { 1098 if (!ropts) 1099 printf(", "); 1100 printf("max-src-conn %u", r->max_src_conn); 1101 ropts = 0; 1102 } 1103 if (r->max_src_conn_rate.limit) { 1104 if (!ropts) 1105 printf(", "); 1106 printf("max-src-conn-rate %u/%u", 1107 r->max_src_conn_rate.limit, 1108 r->max_src_conn_rate.seconds); 1109 ropts = 0; 1110 } 1111 if (r->max_src_nodes) { 1112 if (!ropts) 1113 printf(", "); 1114 printf("max-src-nodes %u", r->max_src_nodes); 1115 ropts = 0; 1116 } 1117 if (r->overload_tblname[0]) { 1118 if (!ropts) 1119 printf(", "); 1120 printf("overload <%s>", r->overload_tblname); 1121 if (r->flush) 1122 printf(" flush"); 1123 if (r->flush & PF_FLUSH_GLOBAL) 1124 printf(" global"); 1125 } 1126 if (r->rule_flag & PFRULE_IFBOUND) { 1127 if (!ropts) 1128 printf(", "); 1129 printf("if-bound"); 1130 ropts = 0; 1131 } 1132 if (r->rule_flag & PFRULE_STATESLOPPY) { 1133 if (!ropts) 1134 printf(", "); 1135 printf("sloppy"); 1136 ropts = 0; 1137 } 1138 if (r->rule_flag & PFRULE_PFLOW) { 1139 if (!ropts) 1140 printf(", "); 1141 printf("pflow"); 1142 ropts = 0; 1143 } 1144 for (i = 0; i < PFTM_MAX; ++i) 1145 if (r->timeout[i]) { 1146 int j; 1147 1148 if (!ropts) 1149 printf(", "); 1150 ropts = 0; 1151 for (j = 0; pf_timeouts[j].name != NULL; 1152 ++j) 1153 if (pf_timeouts[j].timeout == i) 1154 break; 1155 printf("%s %u", pf_timeouts[j].name == NULL ? 1156 "inv.timeout" : pf_timeouts[j].name, 1157 r->timeout[i]); 1158 } 1159 printf(")"); 1160 } 1161 if (r->allow_opts) 1162 printf(" allow-opts"); 1163 if (r->rule_flag & PFRULE_FRAGMENT) 1164 printf(" fragment"); 1165 if (r->action == PF_SCRUB) { 1166 /* Scrub flags for old-style scrub. */ 1167 if (r->rule_flag & PFRULE_NODF) 1168 printf(" no-df"); 1169 if (r->rule_flag & PFRULE_RANDOMID) 1170 printf(" random-id"); 1171 if (r->min_ttl) 1172 printf(" min-ttl %d", r->min_ttl); 1173 if (r->max_mss) 1174 printf(" max-mss %d", r->max_mss); 1175 if (r->rule_flag & PFRULE_SET_TOS) 1176 printf(" set-tos 0x%2.2x", r->set_tos); 1177 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1178 printf(" reassemble tcp"); 1179 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */ 1180 printf(" fragment %sreassemble", 1181 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : ""); 1182 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) { 1183 /* Scrub actions on normal rules. */ 1184 printf(" scrub("); 1185 if (r->scrub_flags & PFSTATE_NODF) 1186 printf(" no-df"); 1187 if (r->scrub_flags & PFSTATE_RANDOMID) 1188 printf(" random-id"); 1189 if (r->min_ttl) 1190 printf(" min-ttl %d", r->min_ttl); 1191 if (r->scrub_flags & PFSTATE_SETTOS) 1192 printf(" set-tos 0x%2.2x", r->set_tos); 1193 if (r->scrub_flags & PFSTATE_SCRUB_TCP) 1194 printf(" reassemble tcp"); 1195 if (r->max_mss) 1196 printf(" max-mss %d", r->max_mss); 1197 printf(")"); 1198 } 1199 i = 0; 1200 while (r->label[i][0]) 1201 printf(" label \"%s\"", r->label[i++]); 1202 if (r->ridentifier) 1203 printf(" ridentifier %u", r->ridentifier); 1204 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */ 1205 if (r->dnrpipe) 1206 printf(" %s(%d, %d)", 1207 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1208 r->dnpipe, r->dnrpipe); 1209 else if (r->dnpipe) 1210 printf(" %s %d", 1211 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1212 r->dnpipe); 1213 if (r->qname[0] && r->pqname[0]) 1214 printf(" queue(%s, %s)", r->qname, r->pqname); 1215 else if (r->qname[0]) 1216 printf(" queue %s", r->qname); 1217 if (r->tagname[0]) 1218 printf(" tag %s", r->tagname); 1219 if (r->match_tagname[0]) { 1220 if (r->match_tag_not) 1221 printf(" !"); 1222 printf(" tagged %s", r->match_tagname); 1223 } 1224 if (r->rtableid != -1) 1225 printf(" rtable %u", r->rtableid); 1226 if (r->divert.port) { 1227 #ifdef __FreeBSD__ 1228 printf(" divert-to %u", ntohs(r->divert.port)); 1229 #else 1230 if (PF_AZERO(&r->divert.addr, r->af)) { 1231 printf(" divert-reply"); 1232 } else { 1233 /* XXX cut&paste from print_addr */ 1234 char buf[48]; 1235 1236 printf(" divert-to "); 1237 if (inet_ntop(r->af, &r->divert.addr, buf, 1238 sizeof(buf)) == NULL) 1239 printf("?"); 1240 else 1241 printf("%s", buf); 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->af, 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" : "inet6"); 1256 } else { 1257 printf(" nat-to "); 1258 } 1259 print_pool(&r->nat, r->nat.proxy_port[0], 1260 r->nat.proxy_port[1], r->naf ? r->naf : r->af, 1261 PF_NAT); 1262 } 1263 if (!TAILQ_EMPTY(&r->rdr.list)) { 1264 if (r->rule_flag & PFRULE_AFTO) { 1265 printf(" to "); 1266 } else { 1267 printf(" rdr-to "); 1268 } 1269 print_pool(&r->rdr, r->rdr.proxy_port[0], 1270 r->rdr.proxy_port[1], r->naf ? r->naf : r->af, 1271 PF_RDR); 1272 } 1273 } 1274 } 1275 1276 void 1277 print_tabledef(const char *name, int flags, int addrs, 1278 struct node_tinithead *nodes) 1279 { 1280 struct node_tinit *ti, *nti; 1281 struct node_host *h; 1282 1283 printf("table <%s>", name); 1284 if (flags & PFR_TFLAG_CONST) 1285 printf(" const"); 1286 if (flags & PFR_TFLAG_PERSIST) 1287 printf(" persist"); 1288 if (flags & PFR_TFLAG_COUNTERS) 1289 printf(" counters"); 1290 SIMPLEQ_FOREACH(ti, nodes, entries) { 1291 if (ti->file) { 1292 printf(" file \"%s\"", ti->file); 1293 continue; 1294 } 1295 printf(" {"); 1296 for (;;) { 1297 for (h = ti->host; h != NULL; h = h->next) { 1298 printf(h->not ? " !" : " "); 1299 print_addr(&h->addr, h->af, 0); 1300 } 1301 nti = SIMPLEQ_NEXT(ti, entries); 1302 if (nti != NULL && nti->file == NULL) 1303 ti = nti; /* merge lists */ 1304 else 1305 break; 1306 } 1307 printf(" }"); 1308 } 1309 if (addrs && SIMPLEQ_EMPTY(nodes)) 1310 printf(" { }"); 1311 printf("\n"); 1312 } 1313 1314 int 1315 parse_flags(char *s) 1316 { 1317 char *p, *q; 1318 uint16_t f = 0; 1319 1320 for (p = s; *p; p++) { 1321 if ((q = strchr(tcpflags, *p)) == NULL) 1322 return -1; 1323 else 1324 f |= 1 << (q - tcpflags); 1325 } 1326 return (f ? f : TH_FLAGS); 1327 } 1328 1329 void 1330 set_ipmask(struct node_host *h, u_int8_t b) 1331 { 1332 struct pf_addr *m, *n; 1333 int i, j = 0; 1334 1335 m = &h->addr.v.a.mask; 1336 memset(m, 0, sizeof(*m)); 1337 1338 while (b >= 32) { 1339 m->addr32[j++] = 0xffffffff; 1340 b -= 32; 1341 } 1342 for (i = 31; i > 31-b; --i) 1343 m->addr32[j] |= (1 << i); 1344 if (b) 1345 m->addr32[j] = htonl(m->addr32[j]); 1346 1347 /* Mask off bits of the address that will never be used. */ 1348 n = &h->addr.v.a.addr; 1349 if (h->addr.type == PF_ADDR_ADDRMASK) 1350 for (i = 0; i < 4; i++) 1351 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1352 } 1353 1354 int 1355 check_netmask(struct node_host *h, sa_family_t af) 1356 { 1357 struct node_host *n = NULL; 1358 struct pf_addr *m; 1359 1360 for (n = h; n != NULL; n = n->next) { 1361 if (h->addr.type == PF_ADDR_TABLE) 1362 continue; 1363 m = &h->addr.v.a.mask; 1364 /* netmasks > 32 bit are invalid on v4 */ 1365 if (af == AF_INET && 1366 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1367 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1368 unmask(m, AF_INET6)); 1369 return (1); 1370 } 1371 } 1372 return (0); 1373 } 1374 1375 struct node_host * 1376 gen_dynnode(struct node_host *h, sa_family_t af) 1377 { 1378 struct node_host *n; 1379 struct pf_addr *m; 1380 1381 if (h->addr.type != PF_ADDR_DYNIFTL) 1382 return (NULL); 1383 1384 if ((n = calloc(1, sizeof(*n))) == NULL) 1385 return (NULL); 1386 bcopy(h, n, sizeof(*n)); 1387 n->ifname = NULL; 1388 n->next = NULL; 1389 n->tail = NULL; 1390 1391 /* fix up netmask */ 1392 m = &n->addr.v.a.mask; 1393 if (af == AF_INET && unmask(m, AF_INET6) > 32) 1394 set_ipmask(n, 32); 1395 1396 return (n); 1397 } 1398 1399 /* interface lookup routines */ 1400 1401 static struct node_host *iftab; 1402 1403 /* 1404 * Retrieve the list of groups this interface is a member of and make sure 1405 * each group is in the group map. 1406 */ 1407 static void 1408 ifa_add_groups_to_map(char *ifa_name) 1409 { 1410 int s, len; 1411 struct ifgroupreq ifgr; 1412 struct ifg_req *ifg; 1413 1414 s = get_query_socket(); 1415 1416 /* Get size of group list for this interface */ 1417 memset(&ifgr, 0, sizeof(ifgr)); 1418 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1419 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1420 err(1, "SIOCGIFGROUP"); 1421 1422 /* Retrieve group list for this interface */ 1423 len = ifgr.ifgr_len; 1424 ifgr.ifgr_groups = 1425 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1426 sizeof(struct ifg_req)); 1427 if (ifgr.ifgr_groups == NULL) 1428 err(1, "calloc"); 1429 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1430 err(1, "SIOCGIFGROUP"); 1431 1432 ifg = ifgr.ifgr_groups; 1433 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1434 len -= sizeof(struct ifg_req); 1435 if (strcmp(ifg->ifgrq_group, "all")) { 1436 ENTRY item; 1437 ENTRY *ret_item; 1438 int *answer; 1439 1440 item.key = ifg->ifgrq_group; 1441 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1442 struct ifgroupreq ifgr2; 1443 1444 /* Don't know the answer yet */ 1445 if ((answer = malloc(sizeof(int))) == NULL) 1446 err(1, "malloc"); 1447 1448 bzero(&ifgr2, sizeof(ifgr2)); 1449 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1450 sizeof(ifgr2.ifgr_name)); 1451 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1452 *answer = ifgr2.ifgr_len; 1453 else 1454 *answer = 0; 1455 1456 item.key = strdup(ifg->ifgrq_group); 1457 item.data = answer; 1458 if (hsearch_r(item, ENTER, &ret_item, 1459 &isgroup_map) == 0) 1460 err(1, "interface group query response" 1461 " map insert"); 1462 } 1463 } 1464 } 1465 free(ifgr.ifgr_groups); 1466 } 1467 1468 void 1469 ifa_load(void) 1470 { 1471 struct ifaddrs *ifap, *ifa; 1472 struct node_host *n = NULL, *h = NULL; 1473 1474 if (getifaddrs(&ifap) < 0) 1475 err(1, "getifaddrs"); 1476 1477 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1478 if (!(ifa->ifa_addr->sa_family == AF_INET || 1479 ifa->ifa_addr->sa_family == AF_INET6 || 1480 ifa->ifa_addr->sa_family == AF_LINK)) 1481 continue; 1482 n = calloc(1, sizeof(struct node_host)); 1483 if (n == NULL) 1484 err(1, "address: calloc"); 1485 n->af = ifa->ifa_addr->sa_family; 1486 n->ifa_flags = ifa->ifa_flags; 1487 #ifdef __KAME__ 1488 if (n->af == AF_INET6 && 1489 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1490 ifa->ifa_addr)->sin6_addr) && 1491 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1492 0) { 1493 struct sockaddr_in6 *sin6; 1494 1495 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1496 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1497 sin6->sin6_addr.s6_addr[3]; 1498 sin6->sin6_addr.s6_addr[2] = 0; 1499 sin6->sin6_addr.s6_addr[3] = 0; 1500 } 1501 #endif 1502 n->ifindex = 0; 1503 if (n->af == AF_INET) { 1504 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1505 ifa->ifa_addr)->sin_addr.s_addr, 1506 sizeof(struct in_addr)); 1507 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1508 ifa->ifa_netmask)->sin_addr.s_addr, 1509 sizeof(struct in_addr)); 1510 if (ifa->ifa_broadaddr != NULL) 1511 memcpy(&n->bcast, &((struct sockaddr_in *) 1512 ifa->ifa_broadaddr)->sin_addr.s_addr, 1513 sizeof(struct in_addr)); 1514 if (ifa->ifa_dstaddr != NULL) 1515 memcpy(&n->peer, &((struct sockaddr_in *) 1516 ifa->ifa_dstaddr)->sin_addr.s_addr, 1517 sizeof(struct in_addr)); 1518 } else if (n->af == AF_INET6) { 1519 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1520 ifa->ifa_addr)->sin6_addr.s6_addr, 1521 sizeof(struct in6_addr)); 1522 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1523 ifa->ifa_netmask)->sin6_addr.s6_addr, 1524 sizeof(struct in6_addr)); 1525 if (ifa->ifa_broadaddr != NULL) 1526 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1527 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1528 sizeof(struct in6_addr)); 1529 if (ifa->ifa_dstaddr != NULL) 1530 memcpy(&n->peer, &((struct sockaddr_in6 *) 1531 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1532 sizeof(struct in6_addr)); 1533 n->ifindex = ((struct sockaddr_in6 *) 1534 ifa->ifa_addr)->sin6_scope_id; 1535 } else if (n->af == AF_LINK) { 1536 ifa_add_groups_to_map(ifa->ifa_name); 1537 n->ifindex = ((struct sockaddr_dl *) 1538 ifa->ifa_addr)->sdl_index; 1539 } 1540 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1541 err(1, "ifa_load: strdup"); 1542 n->next = NULL; 1543 n->tail = n; 1544 if (h == NULL) 1545 h = n; 1546 else { 1547 h->tail->next = n; 1548 h->tail = n; 1549 } 1550 } 1551 1552 iftab = h; 1553 freeifaddrs(ifap); 1554 } 1555 1556 static int 1557 get_socket_domain(void) 1558 { 1559 int sdom; 1560 1561 sdom = AF_UNSPEC; 1562 #ifdef WITH_INET6 1563 if (sdom == AF_UNSPEC && feature_present("inet6")) 1564 sdom = AF_INET6; 1565 #endif 1566 #ifdef WITH_INET 1567 if (sdom == AF_UNSPEC && feature_present("inet")) 1568 sdom = AF_INET; 1569 #endif 1570 if (sdom == AF_UNSPEC) 1571 sdom = AF_LINK; 1572 1573 return (sdom); 1574 } 1575 1576 int 1577 get_query_socket(void) 1578 { 1579 static int s = -1; 1580 1581 if (s == -1) { 1582 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1583 err(1, "socket"); 1584 } 1585 1586 return (s); 1587 } 1588 1589 /* 1590 * Returns the response len if the name is a group, otherwise returns 0. 1591 */ 1592 static int 1593 is_a_group(char *name) 1594 { 1595 ENTRY item; 1596 ENTRY *ret_item; 1597 1598 item.key = name; 1599 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1600 return (0); 1601 1602 return (*(int *)ret_item->data); 1603 } 1604 1605 unsigned int 1606 ifa_nametoindex(const char *ifa_name) 1607 { 1608 struct node_host *p; 1609 1610 for (p = iftab; p; p = p->next) { 1611 if (p->af == AF_LINK && strcmp(p->ifname, ifa_name) == 0) 1612 return (p->ifindex); 1613 } 1614 errno = ENXIO; 1615 return (0); 1616 } 1617 1618 char * 1619 ifa_indextoname(unsigned int ifindex, char *ifa_name) 1620 { 1621 struct node_host *p; 1622 1623 for (p = iftab; p; p = p->next) { 1624 if (p->af == AF_LINK && ifindex == p->ifindex) { 1625 strlcpy(ifa_name, p->ifname, IFNAMSIZ); 1626 return (ifa_name); 1627 } 1628 } 1629 errno = ENXIO; 1630 return (NULL); 1631 } 1632 1633 struct node_host * 1634 ifa_exists(char *ifa_name) 1635 { 1636 struct node_host *n; 1637 1638 if (iftab == NULL) 1639 ifa_load(); 1640 1641 /* check whether this is a group */ 1642 if (is_a_group(ifa_name)) { 1643 /* fake a node_host */ 1644 if ((n = calloc(1, sizeof(*n))) == NULL) 1645 err(1, "calloc"); 1646 if ((n->ifname = strdup(ifa_name)) == NULL) 1647 err(1, "strdup"); 1648 return (n); 1649 } 1650 1651 for (n = iftab; n; n = n->next) { 1652 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1653 return (n); 1654 } 1655 1656 return (NULL); 1657 } 1658 1659 struct node_host * 1660 ifa_grouplookup(char *ifa_name, int flags) 1661 { 1662 struct ifg_req *ifg; 1663 struct ifgroupreq ifgr; 1664 int s, len; 1665 struct node_host *n, *h = NULL; 1666 1667 s = get_query_socket(); 1668 len = is_a_group(ifa_name); 1669 if (len == 0) 1670 return (NULL); 1671 bzero(&ifgr, sizeof(ifgr)); 1672 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1673 ifgr.ifgr_len = len; 1674 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1675 err(1, "calloc"); 1676 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1677 err(1, "SIOCGIFGMEMB"); 1678 1679 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1680 ifg++) { 1681 len -= sizeof(struct ifg_req); 1682 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1683 continue; 1684 if (h == NULL) 1685 h = n; 1686 else { 1687 h->tail->next = n; 1688 h->tail = n->tail; 1689 } 1690 } 1691 free(ifgr.ifgr_groups); 1692 1693 return (h); 1694 } 1695 1696 struct node_host * 1697 ifa_lookup(char *ifa_name, int flags) 1698 { 1699 struct node_host *p = NULL, *h = NULL, *n = NULL; 1700 int got4 = 0, got6 = 0; 1701 const char *last_if = NULL; 1702 1703 /* first load iftab and isgroup_map */ 1704 if (iftab == NULL) 1705 ifa_load(); 1706 1707 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1708 return (h); 1709 1710 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1711 ifa_name = NULL; 1712 1713 for (p = iftab; p; p = p->next) { 1714 if (ifa_skip_if(ifa_name, p)) 1715 continue; 1716 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1717 continue; 1718 if ((flags & PFI_AFLAG_BROADCAST) && 1719 !(p->ifa_flags & IFF_BROADCAST)) 1720 continue; 1721 if ((flags & PFI_AFLAG_BROADCAST) && p->bcast.v4.s_addr == 0) 1722 continue; 1723 if ((flags & PFI_AFLAG_PEER) && 1724 !(p->ifa_flags & IFF_POINTOPOINT)) 1725 continue; 1726 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1727 continue; 1728 if (last_if == NULL || strcmp(last_if, p->ifname)) 1729 got4 = got6 = 0; 1730 last_if = p->ifname; 1731 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1732 continue; 1733 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1734 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1735 continue; 1736 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1737 continue; 1738 if (p->af == AF_INET) 1739 got4 = 1; 1740 else 1741 got6 = 1; 1742 n = calloc(1, sizeof(struct node_host)); 1743 if (n == NULL) 1744 err(1, "address: calloc"); 1745 n->af = p->af; 1746 if (flags & PFI_AFLAG_BROADCAST) 1747 memcpy(&n->addr.v.a.addr, &p->bcast, 1748 sizeof(struct pf_addr)); 1749 else if (flags & PFI_AFLAG_PEER) 1750 memcpy(&n->addr.v.a.addr, &p->peer, 1751 sizeof(struct pf_addr)); 1752 else 1753 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1754 sizeof(struct pf_addr)); 1755 if (flags & PFI_AFLAG_NETWORK) 1756 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1757 else { 1758 if (n->af == AF_INET) { 1759 if (p->ifa_flags & IFF_LOOPBACK && 1760 p->ifa_flags & IFF_LINK1) 1761 memcpy(&n->addr.v.a.mask, 1762 &p->addr.v.a.mask, 1763 sizeof(struct pf_addr)); 1764 else 1765 set_ipmask(n, 32); 1766 } else 1767 set_ipmask(n, 128); 1768 } 1769 n->ifindex = p->ifindex; 1770 n->ifname = strdup(p->ifname); 1771 1772 n->next = NULL; 1773 n->tail = n; 1774 if (h == NULL) 1775 h = n; 1776 else { 1777 h->tail->next = n; 1778 h->tail = n; 1779 } 1780 } 1781 return (h); 1782 } 1783 1784 int 1785 ifa_skip_if(const char *filter, struct node_host *p) 1786 { 1787 int n; 1788 1789 if (p->af != AF_INET && p->af != AF_INET6) 1790 return (1); 1791 if (filter == NULL || !*filter) 1792 return (0); 1793 if (!strcmp(p->ifname, filter)) 1794 return (0); /* exact match */ 1795 n = strlen(filter); 1796 if (n < 1 || n >= IFNAMSIZ) 1797 return (1); /* sanity check */ 1798 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1799 return (1); /* only do exact match in that case */ 1800 if (strncmp(p->ifname, filter, n)) 1801 return (1); /* prefix doesn't match */ 1802 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1803 } 1804 1805 1806 struct node_host * 1807 host(const char *s, int opts) 1808 { 1809 struct node_host *h = NULL; 1810 int mask, v4mask, v6mask, cont = 1; 1811 char *p, *q, *ps; 1812 1813 if ((p = strrchr(s, '/')) != NULL) { 1814 mask = strtol(p+1, &q, 0); 1815 if (!q || *q || mask > 128 || q == (p+1)) { 1816 fprintf(stderr, "invalid netmask '%s'\n", p); 1817 return (NULL); 1818 } 1819 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1820 err(1, "host: malloc"); 1821 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1822 v4mask = v6mask = mask; 1823 } else { 1824 if ((ps = strdup(s)) == NULL) 1825 err(1, "host: strdup"); 1826 v4mask = 32; 1827 v6mask = 128; 1828 mask = -1; 1829 } 1830 1831 /* IPv4 address? */ 1832 if (cont && (h = host_v4(s, mask)) != NULL) 1833 cont = 0; 1834 1835 /* IPv6 address? */ 1836 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1837 cont = 0; 1838 1839 /* interface with this name exists? */ 1840 /* expensive with thousands of interfaces - prioritze IPv4/6 check */ 1841 if (cont && (h = host_if(ps, mask, &cont)) != NULL) 1842 cont = 0; 1843 1844 /* dns lookup */ 1845 if (cont && (h = host_dns(ps, v4mask, v6mask, 1846 (opts & PF_OPT_NODNS))) != NULL) 1847 cont = 0; 1848 free(ps); 1849 1850 if (h == NULL || cont == 1) { 1851 fprintf(stderr, "no IP address found for %s\n", s); 1852 return (NULL); 1853 } 1854 return (h); 1855 } 1856 1857 struct node_host * 1858 host_if(const char *s, int mask, int *cont) 1859 { 1860 struct node_host *n, *h = NULL; 1861 char *p, *ps; 1862 int flags = 0; 1863 1864 if ((ps = strdup(s)) == NULL) 1865 err(1, "host_if: strdup"); 1866 while ((p = strrchr(ps, ':')) != NULL) { 1867 if (!strcmp(p+1, "network")) 1868 flags |= PFI_AFLAG_NETWORK; 1869 else if (!strcmp(p+1, "broadcast")) 1870 flags |= PFI_AFLAG_BROADCAST; 1871 else if (!strcmp(p+1, "peer")) 1872 flags |= PFI_AFLAG_PEER; 1873 else if (!strcmp(p+1, "0")) 1874 flags |= PFI_AFLAG_NOALIAS; 1875 else { 1876 free(ps); 1877 return (NULL); 1878 } 1879 *p = '\0'; 1880 *cont = 0; 1881 } 1882 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1883 fprintf(stderr, "illegal combination of interface modifiers\n"); 1884 free(ps); 1885 return (NULL); 1886 } 1887 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1888 fprintf(stderr, "network or broadcast lookup, but " 1889 "extra netmask given\n"); 1890 free(ps); 1891 return (NULL); 1892 } 1893 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1894 /* interface with this name exists */ 1895 h = ifa_lookup(ps, flags); 1896 for (n = h; n != NULL && mask > -1; n = n->next) 1897 set_ipmask(n, mask); 1898 } 1899 1900 free(ps); 1901 return (h); 1902 } 1903 1904 struct node_host * 1905 host_v4(const char *s, int mask) 1906 { 1907 struct node_host *h = NULL; 1908 struct in_addr ina; 1909 int bits = 32; 1910 1911 memset(&ina, 0, sizeof(struct in_addr)); 1912 if (strrchr(s, '/') != NULL) { 1913 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1914 return (NULL); 1915 } else { 1916 if (inet_pton(AF_INET, s, &ina) != 1) 1917 return (NULL); 1918 } 1919 1920 h = calloc(1, sizeof(struct node_host)); 1921 if (h == NULL) 1922 err(1, "address: calloc"); 1923 h->ifname = NULL; 1924 h->af = AF_INET; 1925 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1926 set_ipmask(h, bits); 1927 h->next = NULL; 1928 h->tail = h; 1929 1930 return (h); 1931 } 1932 1933 struct node_host * 1934 host_v6(const char *s, int mask) 1935 { 1936 struct addrinfo hints, *res; 1937 struct node_host *h = NULL; 1938 1939 memset(&hints, 0, sizeof(hints)); 1940 hints.ai_family = AF_INET6; 1941 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1942 hints.ai_flags = AI_NUMERICHOST; 1943 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1944 h = calloc(1, sizeof(struct node_host)); 1945 if (h == NULL) 1946 err(1, "address: calloc"); 1947 h->ifname = NULL; 1948 h->af = AF_INET6; 1949 memcpy(&h->addr.v.a.addr, 1950 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1951 sizeof(h->addr.v.a.addr)); 1952 h->ifindex = 1953 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1954 set_ipmask(h, mask); 1955 freeaddrinfo(res); 1956 h->next = NULL; 1957 h->tail = h; 1958 } 1959 1960 return (h); 1961 } 1962 1963 struct node_host * 1964 host_dns(const char *s, int v4mask, int v6mask, int numeric) 1965 { 1966 struct addrinfo hints, *res0, *res; 1967 struct node_host *n, *h = NULL; 1968 int error, noalias = 0; 1969 int got4 = 0, got6 = 0; 1970 char *p, *ps; 1971 1972 if ((ps = strdup(s)) == NULL) 1973 err(1, "host_dns: strdup"); 1974 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1975 noalias = 1; 1976 *p = '\0'; 1977 } 1978 memset(&hints, 0, sizeof(hints)); 1979 hints.ai_family = PF_UNSPEC; 1980 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1981 if (numeric) 1982 hints.ai_flags = AI_NUMERICHOST; 1983 error = getaddrinfo(ps, NULL, &hints, &res0); 1984 if (error) { 1985 free(ps); 1986 return (h); 1987 } 1988 1989 for (res = res0; res; res = res->ai_next) { 1990 if (res->ai_family != AF_INET && 1991 res->ai_family != AF_INET6) 1992 continue; 1993 if (noalias) { 1994 if (res->ai_family == AF_INET) { 1995 if (got4) 1996 continue; 1997 got4 = 1; 1998 } else { 1999 if (got6) 2000 continue; 2001 got6 = 1; 2002 } 2003 } 2004 n = calloc(1, sizeof(struct node_host)); 2005 if (n == NULL) 2006 err(1, "host_dns: calloc"); 2007 n->ifname = NULL; 2008 n->af = res->ai_family; 2009 if (res->ai_family == AF_INET) { 2010 memcpy(&n->addr.v.a.addr, 2011 &((struct sockaddr_in *) 2012 res->ai_addr)->sin_addr.s_addr, 2013 sizeof(struct in_addr)); 2014 set_ipmask(n, v4mask); 2015 } else { 2016 memcpy(&n->addr.v.a.addr, 2017 &((struct sockaddr_in6 *) 2018 res->ai_addr)->sin6_addr.s6_addr, 2019 sizeof(struct in6_addr)); 2020 n->ifindex = 2021 ((struct sockaddr_in6 *) 2022 res->ai_addr)->sin6_scope_id; 2023 set_ipmask(n, v6mask); 2024 } 2025 n->next = NULL; 2026 n->tail = n; 2027 if (h == NULL) 2028 h = n; 2029 else { 2030 h->tail->next = n; 2031 h->tail = n; 2032 } 2033 } 2034 freeaddrinfo(res0); 2035 free(ps); 2036 2037 return (h); 2038 } 2039 2040 /* 2041 * convert a hostname to a list of addresses and put them in the given buffer. 2042 * test: 2043 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 2044 */ 2045 int 2046 append_addr(struct pfr_buffer *b, char *s, int test, int opts) 2047 { 2048 char *r; 2049 struct node_host *h, *n; 2050 int rv, not = 0; 2051 2052 for (r = s; *r == '!'; r++) 2053 not = !not; 2054 if ((n = host(r, opts)) == NULL) { 2055 errno = 0; 2056 return (-1); 2057 } 2058 rv = append_addr_host(b, n, test, not); 2059 do { 2060 h = n; 2061 n = n->next; 2062 free(h); 2063 } while (n != NULL); 2064 return (rv); 2065 } 2066 2067 /* 2068 * same as previous function, but with a pre-parsed input and the ability 2069 * to "negate" the result. Does not free the node_host list. 2070 * not: 2071 * setting it to 1 is equivalent to adding "!" in front of parameter s. 2072 */ 2073 int 2074 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 2075 { 2076 int bits; 2077 struct pfr_addr addr; 2078 2079 do { 2080 bzero(&addr, sizeof(addr)); 2081 addr.pfra_not = n->not ^ not; 2082 addr.pfra_af = n->af; 2083 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 2084 switch (n->af) { 2085 case AF_INET: 2086 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 2087 bits = 32; 2088 break; 2089 case AF_INET6: 2090 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 2091 sizeof(struct in6_addr)); 2092 bits = 128; 2093 break; 2094 default: 2095 errno = EINVAL; 2096 return (-1); 2097 } 2098 if ((test && (not || addr.pfra_net != bits)) || 2099 addr.pfra_net > bits) { 2100 errno = EINVAL; 2101 return (-1); 2102 } 2103 if (pfr_buf_add(b, &addr)) 2104 return (-1); 2105 } while ((n = n->next) != NULL); 2106 2107 return (0); 2108 } 2109 2110 int 2111 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 2112 { 2113 struct pfioc_trans_e trans; 2114 2115 bzero(&trans, sizeof(trans)); 2116 trans.rs_num = rs_num; 2117 if (strlcpy(trans.anchor, anchor, 2118 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 2119 errx(1, "pfctl_add_trans: strlcpy"); 2120 2121 return pfr_buf_add(buf, &trans); 2122 } 2123 2124 u_int32_t 2125 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 2126 { 2127 struct pfioc_trans_e *p; 2128 2129 PFRB_FOREACH(p, buf) 2130 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 2131 return (p->ticket); 2132 errx(1, "pfctl_get_ticket: assertion failed"); 2133 } 2134 2135 int 2136 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 2137 { 2138 struct pfioc_trans trans; 2139 2140 bzero(&trans, sizeof(trans)); 2141 trans.size = buf->pfrb_size - from; 2142 trans.esize = sizeof(struct pfioc_trans_e); 2143 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 2144 return ioctl(dev, cmd, &trans); 2145 } 2146