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); 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->scrub_flags & PFSTATE_SETMASK) { 1011 char *comma = ""; 1012 printf(" set ("); 1013 if (r->scrub_flags & PFSTATE_SETPRIO) { 1014 if (r->set_prio[0] == r->set_prio[1]) 1015 printf("%s prio %u", comma, r->set_prio[0]); 1016 else 1017 printf("%s prio(%u, %u)", comma, r->set_prio[0], 1018 r->set_prio[1]); 1019 comma = ","; 1020 } 1021 if (r->scrub_flags & PFSTATE_SETTOS) { 1022 printf("%s tos 0x%2.2x", comma, r->set_tos); 1023 comma = ","; 1024 } 1025 printf(" )"); 1026 } 1027 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 1028 printf(" no state"); 1029 else if (r->keep_state == PF_STATE_NORMAL) 1030 printf(" keep state"); 1031 else if (r->keep_state == PF_STATE_MODULATE) 1032 printf(" modulate state"); 1033 else if (r->keep_state == PF_STATE_SYNPROXY) 1034 printf(" synproxy state"); 1035 if (r->prob) { 1036 char buf[20]; 1037 1038 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 1039 for (i = strlen(buf)-1; i > 0; i--) { 1040 if (buf[i] == '0') 1041 buf[i] = '\0'; 1042 else { 1043 if (buf[i] == '.') 1044 buf[i] = '\0'; 1045 break; 1046 } 1047 } 1048 printf(" probability %s%%", buf); 1049 } 1050 ropts = 0; 1051 if (r->max_states || r->max_src_nodes || r->max_src_states) 1052 ropts = 1; 1053 if (r->rule_flag & PFRULE_NOSYNC) 1054 ropts = 1; 1055 if (r->rule_flag & PFRULE_SRCTRACK) 1056 ropts = 1; 1057 if (r->rule_flag & PFRULE_IFBOUND) 1058 ropts = 1; 1059 if (r->rule_flag & PFRULE_STATESLOPPY) 1060 ropts = 1; 1061 if (r->rule_flag & PFRULE_PFLOW) 1062 ropts = 1; 1063 for (i = 0; !ropts && i < PFTM_MAX; ++i) 1064 if (r->timeout[i]) 1065 ropts = 1; 1066 if (ropts) { 1067 printf(" ("); 1068 if (r->max_states) { 1069 printf("max %u", r->max_states); 1070 ropts = 0; 1071 } 1072 if (r->rule_flag & PFRULE_NOSYNC) { 1073 if (!ropts) 1074 printf(", "); 1075 printf("no-sync"); 1076 ropts = 0; 1077 } 1078 if (r->rule_flag & PFRULE_SRCTRACK) { 1079 if (!ropts) 1080 printf(", "); 1081 printf("source-track"); 1082 if (r->rule_flag & PFRULE_RULESRCTRACK) 1083 printf(" rule"); 1084 else 1085 printf(" global"); 1086 ropts = 0; 1087 } 1088 if (r->max_src_states) { 1089 if (!ropts) 1090 printf(", "); 1091 printf("max-src-states %u", r->max_src_states); 1092 ropts = 0; 1093 } 1094 if (r->max_src_conn) { 1095 if (!ropts) 1096 printf(", "); 1097 printf("max-src-conn %u", r->max_src_conn); 1098 ropts = 0; 1099 } 1100 if (r->max_src_conn_rate.limit) { 1101 if (!ropts) 1102 printf(", "); 1103 printf("max-src-conn-rate %u/%u", 1104 r->max_src_conn_rate.limit, 1105 r->max_src_conn_rate.seconds); 1106 ropts = 0; 1107 } 1108 if (r->max_src_nodes) { 1109 if (!ropts) 1110 printf(", "); 1111 printf("max-src-nodes %u", r->max_src_nodes); 1112 ropts = 0; 1113 } 1114 if (r->overload_tblname[0]) { 1115 if (!ropts) 1116 printf(", "); 1117 printf("overload <%s>", r->overload_tblname); 1118 if (r->flush) 1119 printf(" flush"); 1120 if (r->flush & PF_FLUSH_GLOBAL) 1121 printf(" global"); 1122 } 1123 if (r->rule_flag & PFRULE_IFBOUND) { 1124 if (!ropts) 1125 printf(", "); 1126 printf("if-bound"); 1127 ropts = 0; 1128 } 1129 if (r->rule_flag & PFRULE_STATESLOPPY) { 1130 if (!ropts) 1131 printf(", "); 1132 printf("sloppy"); 1133 ropts = 0; 1134 } 1135 if (r->rule_flag & PFRULE_PFLOW) { 1136 if (!ropts) 1137 printf(", "); 1138 printf("pflow"); 1139 ropts = 0; 1140 } 1141 for (i = 0; i < PFTM_MAX; ++i) 1142 if (r->timeout[i]) { 1143 int j; 1144 1145 if (!ropts) 1146 printf(", "); 1147 ropts = 0; 1148 for (j = 0; pf_timeouts[j].name != NULL; 1149 ++j) 1150 if (pf_timeouts[j].timeout == i) 1151 break; 1152 printf("%s %u", pf_timeouts[j].name == NULL ? 1153 "inv.timeout" : pf_timeouts[j].name, 1154 r->timeout[i]); 1155 } 1156 printf(")"); 1157 } 1158 if (r->allow_opts) 1159 printf(" allow-opts"); 1160 if (r->rule_flag & PFRULE_FRAGMENT) 1161 printf(" fragment"); 1162 if (r->action == PF_SCRUB) { 1163 /* Scrub flags for old-style scrub. */ 1164 if (r->rule_flag & PFRULE_NODF) 1165 printf(" no-df"); 1166 if (r->rule_flag & PFRULE_RANDOMID) 1167 printf(" random-id"); 1168 if (r->min_ttl) 1169 printf(" min-ttl %d", r->min_ttl); 1170 if (r->max_mss) 1171 printf(" max-mss %d", r->max_mss); 1172 if (r->rule_flag & PFRULE_SET_TOS) 1173 printf(" set-tos 0x%2.2x", r->set_tos); 1174 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1175 printf(" reassemble tcp"); 1176 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */ 1177 printf(" fragment %sreassemble", 1178 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : ""); 1179 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) { 1180 /* Scrub actions on normal rules. */ 1181 printf(" scrub("); 1182 if (r->scrub_flags & PFSTATE_NODF) 1183 printf(" no-df"); 1184 if (r->scrub_flags & PFSTATE_RANDOMID) 1185 printf(" random-id"); 1186 if (r->min_ttl) 1187 printf(" min-ttl %d", r->min_ttl); 1188 if (r->scrub_flags & PFSTATE_SETTOS) 1189 printf(" set-tos 0x%2.2x", r->set_tos); 1190 if (r->scrub_flags & PFSTATE_SCRUB_TCP) 1191 printf(" reassemble tcp"); 1192 if (r->max_mss) 1193 printf(" max-mss %d", r->max_mss); 1194 printf(")"); 1195 } 1196 i = 0; 1197 while (r->label[i][0]) 1198 printf(" label \"%s\"", r->label[i++]); 1199 if (r->ridentifier) 1200 printf(" ridentifier %u", r->ridentifier); 1201 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */ 1202 if (r->dnrpipe) 1203 printf(" %s(%d, %d)", 1204 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1205 r->dnpipe, r->dnrpipe); 1206 else if (r->dnpipe) 1207 printf(" %s %d", 1208 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1209 r->dnpipe); 1210 if (r->qname[0] && r->pqname[0]) 1211 printf(" queue(%s, %s)", r->qname, r->pqname); 1212 else if (r->qname[0]) 1213 printf(" queue %s", r->qname); 1214 if (r->tagname[0]) 1215 printf(" tag %s", r->tagname); 1216 if (r->match_tagname[0]) { 1217 if (r->match_tag_not) 1218 printf(" !"); 1219 printf(" tagged %s", r->match_tagname); 1220 } 1221 if (r->rtableid != -1) 1222 printf(" rtable %u", r->rtableid); 1223 if (r->divert.port) { 1224 #ifdef __FreeBSD__ 1225 printf(" divert-to %u", ntohs(r->divert.port)); 1226 #else 1227 if (PF_AZERO(&r->divert.addr, r->af)) { 1228 printf(" divert-reply"); 1229 } else { 1230 /* XXX cut&paste from print_addr */ 1231 char buf[48]; 1232 1233 printf(" divert-to "); 1234 if (inet_ntop(r->af, &r->divert.addr, buf, 1235 sizeof(buf)) == NULL) 1236 printf("?"); 1237 else 1238 printf("%s", buf); 1239 printf(" port %u", ntohs(r->divert.port)); 1240 } 1241 #endif 1242 } 1243 if (anchor_call[0]) 1244 return; 1245 if (r->action == PF_NAT || r->action == PF_BINAT || r->action == PF_RDR) { 1246 printf(" -> "); 1247 print_pool(&r->rdr, r->rdr.proxy_port[0], 1248 r->rdr.proxy_port[1], r->af, r->action); 1249 } else { 1250 if (!TAILQ_EMPTY(&r->nat.list)) { 1251 if (r->rule_flag & PFRULE_AFTO) { 1252 printf(" af-to %s from ", r->naf == AF_INET ? "inet" : "inet6"); 1253 } else { 1254 printf(" nat-to "); 1255 } 1256 print_pool(&r->nat, r->nat.proxy_port[0], 1257 r->nat.proxy_port[1], r->naf ? r->naf : r->af, 1258 PF_NAT); 1259 } 1260 if (!TAILQ_EMPTY(&r->rdr.list)) { 1261 if (r->rule_flag & PFRULE_AFTO) { 1262 printf(" to "); 1263 } else { 1264 printf(" rdr-to "); 1265 } 1266 print_pool(&r->rdr, r->rdr.proxy_port[0], 1267 r->rdr.proxy_port[1], r->naf ? r->naf : r->af, 1268 PF_RDR); 1269 } 1270 } 1271 } 1272 1273 void 1274 print_tabledef(const char *name, int flags, int addrs, 1275 struct node_tinithead *nodes) 1276 { 1277 struct node_tinit *ti, *nti; 1278 struct node_host *h; 1279 1280 printf("table <%s>", name); 1281 if (flags & PFR_TFLAG_CONST) 1282 printf(" const"); 1283 if (flags & PFR_TFLAG_PERSIST) 1284 printf(" persist"); 1285 if (flags & PFR_TFLAG_COUNTERS) 1286 printf(" counters"); 1287 SIMPLEQ_FOREACH(ti, nodes, entries) { 1288 if (ti->file) { 1289 printf(" file \"%s\"", ti->file); 1290 continue; 1291 } 1292 printf(" {"); 1293 for (;;) { 1294 for (h = ti->host; h != NULL; h = h->next) { 1295 printf(h->not ? " !" : " "); 1296 print_addr(&h->addr, h->af, 0); 1297 } 1298 nti = SIMPLEQ_NEXT(ti, entries); 1299 if (nti != NULL && nti->file == NULL) 1300 ti = nti; /* merge lists */ 1301 else 1302 break; 1303 } 1304 printf(" }"); 1305 } 1306 if (addrs && SIMPLEQ_EMPTY(nodes)) 1307 printf(" { }"); 1308 printf("\n"); 1309 } 1310 1311 int 1312 parse_flags(char *s) 1313 { 1314 char *p, *q; 1315 uint16_t f = 0; 1316 1317 for (p = s; *p; p++) { 1318 if ((q = strchr(tcpflags, *p)) == NULL) 1319 return -1; 1320 else 1321 f |= 1 << (q - tcpflags); 1322 } 1323 return (f ? f : TH_FLAGS); 1324 } 1325 1326 void 1327 set_ipmask(struct node_host *h, u_int8_t b) 1328 { 1329 struct pf_addr *m, *n; 1330 int i, j = 0; 1331 1332 m = &h->addr.v.a.mask; 1333 memset(m, 0, sizeof(*m)); 1334 1335 while (b >= 32) { 1336 m->addr32[j++] = 0xffffffff; 1337 b -= 32; 1338 } 1339 for (i = 31; i > 31-b; --i) 1340 m->addr32[j] |= (1 << i); 1341 if (b) 1342 m->addr32[j] = htonl(m->addr32[j]); 1343 1344 /* Mask off bits of the address that will never be used. */ 1345 n = &h->addr.v.a.addr; 1346 if (h->addr.type == PF_ADDR_ADDRMASK) 1347 for (i = 0; i < 4; i++) 1348 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1349 } 1350 1351 int 1352 check_netmask(struct node_host *h, sa_family_t af) 1353 { 1354 struct node_host *n = NULL; 1355 struct pf_addr *m; 1356 1357 for (n = h; n != NULL; n = n->next) { 1358 if (h->addr.type == PF_ADDR_TABLE) 1359 continue; 1360 m = &h->addr.v.a.mask; 1361 /* netmasks > 32 bit are invalid on v4 */ 1362 if (af == AF_INET && 1363 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1364 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1365 unmask(m, AF_INET6)); 1366 return (1); 1367 } 1368 } 1369 return (0); 1370 } 1371 1372 struct node_host * 1373 gen_dynnode(struct node_host *h, sa_family_t af) 1374 { 1375 struct node_host *n; 1376 struct pf_addr *m; 1377 1378 if (h->addr.type != PF_ADDR_DYNIFTL) 1379 return (NULL); 1380 1381 if ((n = calloc(1, sizeof(*n))) == NULL) 1382 return (NULL); 1383 bcopy(h, n, sizeof(*n)); 1384 n->ifname = NULL; 1385 n->next = NULL; 1386 n->tail = NULL; 1387 1388 /* fix up netmask */ 1389 m = &n->addr.v.a.mask; 1390 if (af == AF_INET && unmask(m, AF_INET6) > 32) 1391 set_ipmask(n, 32); 1392 1393 return (n); 1394 } 1395 1396 /* interface lookup routines */ 1397 1398 static struct node_host *iftab; 1399 1400 /* 1401 * Retrieve the list of groups this interface is a member of and make sure 1402 * each group is in the group map. 1403 */ 1404 static void 1405 ifa_add_groups_to_map(char *ifa_name) 1406 { 1407 int s, len; 1408 struct ifgroupreq ifgr; 1409 struct ifg_req *ifg; 1410 1411 s = get_query_socket(); 1412 1413 /* Get size of group list for this interface */ 1414 memset(&ifgr, 0, sizeof(ifgr)); 1415 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1416 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1417 err(1, "SIOCGIFGROUP"); 1418 1419 /* Retrieve group list for this interface */ 1420 len = ifgr.ifgr_len; 1421 ifgr.ifgr_groups = 1422 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1423 sizeof(struct ifg_req)); 1424 if (ifgr.ifgr_groups == NULL) 1425 err(1, "calloc"); 1426 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1427 err(1, "SIOCGIFGROUP"); 1428 1429 ifg = ifgr.ifgr_groups; 1430 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1431 len -= sizeof(struct ifg_req); 1432 if (strcmp(ifg->ifgrq_group, "all")) { 1433 ENTRY item; 1434 ENTRY *ret_item; 1435 int *answer; 1436 1437 item.key = ifg->ifgrq_group; 1438 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1439 struct ifgroupreq ifgr2; 1440 1441 /* Don't know the answer yet */ 1442 if ((answer = malloc(sizeof(int))) == NULL) 1443 err(1, "malloc"); 1444 1445 bzero(&ifgr2, sizeof(ifgr2)); 1446 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1447 sizeof(ifgr2.ifgr_name)); 1448 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1449 *answer = ifgr2.ifgr_len; 1450 else 1451 *answer = 0; 1452 1453 item.key = strdup(ifg->ifgrq_group); 1454 item.data = answer; 1455 if (hsearch_r(item, ENTER, &ret_item, 1456 &isgroup_map) == 0) 1457 err(1, "interface group query response" 1458 " map insert"); 1459 } 1460 } 1461 } 1462 free(ifgr.ifgr_groups); 1463 } 1464 1465 void 1466 ifa_load(void) 1467 { 1468 struct ifaddrs *ifap, *ifa; 1469 struct node_host *n = NULL, *h = NULL; 1470 1471 if (getifaddrs(&ifap) < 0) 1472 err(1, "getifaddrs"); 1473 1474 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1475 if (!(ifa->ifa_addr->sa_family == AF_INET || 1476 ifa->ifa_addr->sa_family == AF_INET6 || 1477 ifa->ifa_addr->sa_family == AF_LINK)) 1478 continue; 1479 n = calloc(1, sizeof(struct node_host)); 1480 if (n == NULL) 1481 err(1, "address: calloc"); 1482 n->af = ifa->ifa_addr->sa_family; 1483 n->ifa_flags = ifa->ifa_flags; 1484 #ifdef __KAME__ 1485 if (n->af == AF_INET6 && 1486 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1487 ifa->ifa_addr)->sin6_addr) && 1488 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1489 0) { 1490 struct sockaddr_in6 *sin6; 1491 1492 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1493 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1494 sin6->sin6_addr.s6_addr[3]; 1495 sin6->sin6_addr.s6_addr[2] = 0; 1496 sin6->sin6_addr.s6_addr[3] = 0; 1497 } 1498 #endif 1499 n->ifindex = 0; 1500 if (n->af == AF_INET) { 1501 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1502 ifa->ifa_addr)->sin_addr.s_addr, 1503 sizeof(struct in_addr)); 1504 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1505 ifa->ifa_netmask)->sin_addr.s_addr, 1506 sizeof(struct in_addr)); 1507 if (ifa->ifa_broadaddr != NULL) 1508 memcpy(&n->bcast, &((struct sockaddr_in *) 1509 ifa->ifa_broadaddr)->sin_addr.s_addr, 1510 sizeof(struct in_addr)); 1511 if (ifa->ifa_dstaddr != NULL) 1512 memcpy(&n->peer, &((struct sockaddr_in *) 1513 ifa->ifa_dstaddr)->sin_addr.s_addr, 1514 sizeof(struct in_addr)); 1515 } else if (n->af == AF_INET6) { 1516 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1517 ifa->ifa_addr)->sin6_addr.s6_addr, 1518 sizeof(struct in6_addr)); 1519 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1520 ifa->ifa_netmask)->sin6_addr.s6_addr, 1521 sizeof(struct in6_addr)); 1522 if (ifa->ifa_broadaddr != NULL) 1523 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1524 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1525 sizeof(struct in6_addr)); 1526 if (ifa->ifa_dstaddr != NULL) 1527 memcpy(&n->peer, &((struct sockaddr_in6 *) 1528 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1529 sizeof(struct in6_addr)); 1530 n->ifindex = ((struct sockaddr_in6 *) 1531 ifa->ifa_addr)->sin6_scope_id; 1532 } else if (n->af == AF_LINK) { 1533 ifa_add_groups_to_map(ifa->ifa_name); 1534 n->ifindex = ((struct sockaddr_dl *) 1535 ifa->ifa_addr)->sdl_index; 1536 } 1537 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1538 err(1, "ifa_load: strdup"); 1539 n->next = NULL; 1540 n->tail = n; 1541 if (h == NULL) 1542 h = n; 1543 else { 1544 h->tail->next = n; 1545 h->tail = n; 1546 } 1547 } 1548 1549 iftab = h; 1550 freeifaddrs(ifap); 1551 } 1552 1553 static int 1554 get_socket_domain(void) 1555 { 1556 int sdom; 1557 1558 sdom = AF_UNSPEC; 1559 #ifdef WITH_INET6 1560 if (sdom == AF_UNSPEC && feature_present("inet6")) 1561 sdom = AF_INET6; 1562 #endif 1563 #ifdef WITH_INET 1564 if (sdom == AF_UNSPEC && feature_present("inet")) 1565 sdom = AF_INET; 1566 #endif 1567 if (sdom == AF_UNSPEC) 1568 sdom = AF_LINK; 1569 1570 return (sdom); 1571 } 1572 1573 int 1574 get_query_socket(void) 1575 { 1576 static int s = -1; 1577 1578 if (s == -1) { 1579 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1580 err(1, "socket"); 1581 } 1582 1583 return (s); 1584 } 1585 1586 /* 1587 * Returns the response len if the name is a group, otherwise returns 0. 1588 */ 1589 static int 1590 is_a_group(char *name) 1591 { 1592 ENTRY item; 1593 ENTRY *ret_item; 1594 1595 item.key = name; 1596 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1597 return (0); 1598 1599 return (*(int *)ret_item->data); 1600 } 1601 1602 unsigned int 1603 ifa_nametoindex(const char *ifa_name) 1604 { 1605 struct node_host *p; 1606 1607 for (p = iftab; p; p = p->next) { 1608 if (p->af == AF_LINK && strcmp(p->ifname, ifa_name) == 0) 1609 return (p->ifindex); 1610 } 1611 errno = ENXIO; 1612 return (0); 1613 } 1614 1615 char * 1616 ifa_indextoname(unsigned int ifindex, char *ifa_name) 1617 { 1618 struct node_host *p; 1619 1620 for (p = iftab; p; p = p->next) { 1621 if (p->af == AF_LINK && ifindex == p->ifindex) { 1622 strlcpy(ifa_name, p->ifname, IFNAMSIZ); 1623 return (ifa_name); 1624 } 1625 } 1626 errno = ENXIO; 1627 return (NULL); 1628 } 1629 1630 struct node_host * 1631 ifa_exists(char *ifa_name) 1632 { 1633 struct node_host *n; 1634 1635 if (iftab == NULL) 1636 ifa_load(); 1637 1638 /* check whether this is a group */ 1639 if (is_a_group(ifa_name)) { 1640 /* fake a node_host */ 1641 if ((n = calloc(1, sizeof(*n))) == NULL) 1642 err(1, "calloc"); 1643 if ((n->ifname = strdup(ifa_name)) == NULL) 1644 err(1, "strdup"); 1645 return (n); 1646 } 1647 1648 for (n = iftab; n; n = n->next) { 1649 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1650 return (n); 1651 } 1652 1653 return (NULL); 1654 } 1655 1656 struct node_host * 1657 ifa_grouplookup(char *ifa_name, int flags) 1658 { 1659 struct ifg_req *ifg; 1660 struct ifgroupreq ifgr; 1661 int s, len; 1662 struct node_host *n, *h = NULL; 1663 1664 s = get_query_socket(); 1665 len = is_a_group(ifa_name); 1666 if (len == 0) 1667 return (NULL); 1668 bzero(&ifgr, sizeof(ifgr)); 1669 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1670 ifgr.ifgr_len = len; 1671 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1672 err(1, "calloc"); 1673 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1674 err(1, "SIOCGIFGMEMB"); 1675 1676 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1677 ifg++) { 1678 len -= sizeof(struct ifg_req); 1679 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1680 continue; 1681 if (h == NULL) 1682 h = n; 1683 else { 1684 h->tail->next = n; 1685 h->tail = n->tail; 1686 } 1687 } 1688 free(ifgr.ifgr_groups); 1689 1690 return (h); 1691 } 1692 1693 struct node_host * 1694 ifa_lookup(char *ifa_name, int flags) 1695 { 1696 struct node_host *p = NULL, *h = NULL, *n = NULL; 1697 int got4 = 0, got6 = 0; 1698 const char *last_if = NULL; 1699 1700 /* first load iftab and isgroup_map */ 1701 if (iftab == NULL) 1702 ifa_load(); 1703 1704 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1705 return (h); 1706 1707 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1708 ifa_name = NULL; 1709 1710 for (p = iftab; p; p = p->next) { 1711 if (ifa_skip_if(ifa_name, p)) 1712 continue; 1713 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1714 continue; 1715 if ((flags & PFI_AFLAG_BROADCAST) && 1716 !(p->ifa_flags & IFF_BROADCAST)) 1717 continue; 1718 if ((flags & PFI_AFLAG_BROADCAST) && p->bcast.v4.s_addr == 0) 1719 continue; 1720 if ((flags & PFI_AFLAG_PEER) && 1721 !(p->ifa_flags & IFF_POINTOPOINT)) 1722 continue; 1723 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1724 continue; 1725 if (last_if == NULL || strcmp(last_if, p->ifname)) 1726 got4 = got6 = 0; 1727 last_if = p->ifname; 1728 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1729 continue; 1730 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1731 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1732 continue; 1733 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1734 continue; 1735 if (p->af == AF_INET) 1736 got4 = 1; 1737 else 1738 got6 = 1; 1739 n = calloc(1, sizeof(struct node_host)); 1740 if (n == NULL) 1741 err(1, "address: calloc"); 1742 n->af = p->af; 1743 if (flags & PFI_AFLAG_BROADCAST) 1744 memcpy(&n->addr.v.a.addr, &p->bcast, 1745 sizeof(struct pf_addr)); 1746 else if (flags & PFI_AFLAG_PEER) 1747 memcpy(&n->addr.v.a.addr, &p->peer, 1748 sizeof(struct pf_addr)); 1749 else 1750 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1751 sizeof(struct pf_addr)); 1752 if (flags & PFI_AFLAG_NETWORK) 1753 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1754 else { 1755 if (n->af == AF_INET) { 1756 if (p->ifa_flags & IFF_LOOPBACK && 1757 p->ifa_flags & IFF_LINK1) 1758 memcpy(&n->addr.v.a.mask, 1759 &p->addr.v.a.mask, 1760 sizeof(struct pf_addr)); 1761 else 1762 set_ipmask(n, 32); 1763 } else 1764 set_ipmask(n, 128); 1765 } 1766 n->ifindex = p->ifindex; 1767 n->ifname = strdup(p->ifname); 1768 1769 n->next = NULL; 1770 n->tail = n; 1771 if (h == NULL) 1772 h = n; 1773 else { 1774 h->tail->next = n; 1775 h->tail = n; 1776 } 1777 } 1778 return (h); 1779 } 1780 1781 int 1782 ifa_skip_if(const char *filter, struct node_host *p) 1783 { 1784 int n; 1785 1786 if (p->af != AF_INET && p->af != AF_INET6) 1787 return (1); 1788 if (filter == NULL || !*filter) 1789 return (0); 1790 if (!strcmp(p->ifname, filter)) 1791 return (0); /* exact match */ 1792 n = strlen(filter); 1793 if (n < 1 || n >= IFNAMSIZ) 1794 return (1); /* sanity check */ 1795 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1796 return (1); /* only do exact match in that case */ 1797 if (strncmp(p->ifname, filter, n)) 1798 return (1); /* prefix doesn't match */ 1799 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1800 } 1801 1802 1803 struct node_host * 1804 host(const char *s) 1805 { 1806 struct node_host *h = NULL; 1807 int mask, v4mask, v6mask, cont = 1; 1808 char *p, *q, *ps; 1809 1810 if ((p = strrchr(s, '/')) != NULL) { 1811 mask = strtol(p+1, &q, 0); 1812 if (!q || *q || mask > 128 || q == (p+1)) { 1813 fprintf(stderr, "invalid netmask '%s'\n", p); 1814 return (NULL); 1815 } 1816 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1817 err(1, "host: malloc"); 1818 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1819 v4mask = v6mask = mask; 1820 } else { 1821 if ((ps = strdup(s)) == NULL) 1822 err(1, "host: strdup"); 1823 v4mask = 32; 1824 v6mask = 128; 1825 mask = -1; 1826 } 1827 1828 /* IPv4 address? */ 1829 if (cont && (h = host_v4(s, mask)) != NULL) 1830 cont = 0; 1831 1832 /* IPv6 address? */ 1833 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1834 cont = 0; 1835 1836 /* interface with this name exists? */ 1837 /* expensive with thousands of interfaces - prioritze IPv4/6 check */ 1838 if (cont && (h = host_if(ps, mask, &cont)) != NULL) 1839 cont = 0; 1840 1841 /* dns lookup */ 1842 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1843 cont = 0; 1844 free(ps); 1845 1846 if (h == NULL || cont == 1) { 1847 fprintf(stderr, "no IP address found for %s\n", s); 1848 return (NULL); 1849 } 1850 return (h); 1851 } 1852 1853 struct node_host * 1854 host_if(const char *s, int mask, int *cont) 1855 { 1856 struct node_host *n, *h = NULL; 1857 char *p, *ps; 1858 int flags = 0; 1859 1860 if ((ps = strdup(s)) == NULL) 1861 err(1, "host_if: strdup"); 1862 while ((p = strrchr(ps, ':')) != NULL) { 1863 if (!strcmp(p+1, "network")) 1864 flags |= PFI_AFLAG_NETWORK; 1865 else if (!strcmp(p+1, "broadcast")) 1866 flags |= PFI_AFLAG_BROADCAST; 1867 else if (!strcmp(p+1, "peer")) 1868 flags |= PFI_AFLAG_PEER; 1869 else if (!strcmp(p+1, "0")) 1870 flags |= PFI_AFLAG_NOALIAS; 1871 else { 1872 free(ps); 1873 return (NULL); 1874 } 1875 *p = '\0'; 1876 *cont = 0; 1877 } 1878 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1879 fprintf(stderr, "illegal combination of interface modifiers\n"); 1880 free(ps); 1881 return (NULL); 1882 } 1883 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1884 fprintf(stderr, "network or broadcast lookup, but " 1885 "extra netmask given\n"); 1886 free(ps); 1887 return (NULL); 1888 } 1889 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1890 /* interface with this name exists */ 1891 h = ifa_lookup(ps, flags); 1892 for (n = h; n != NULL && mask > -1; n = n->next) 1893 set_ipmask(n, mask); 1894 } 1895 1896 free(ps); 1897 return (h); 1898 } 1899 1900 struct node_host * 1901 host_v4(const char *s, int mask) 1902 { 1903 struct node_host *h = NULL; 1904 struct in_addr ina; 1905 int bits = 32; 1906 1907 memset(&ina, 0, sizeof(struct in_addr)); 1908 if (strrchr(s, '/') != NULL) { 1909 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1910 return (NULL); 1911 } else { 1912 if (inet_pton(AF_INET, s, &ina) != 1) 1913 return (NULL); 1914 } 1915 1916 h = calloc(1, sizeof(struct node_host)); 1917 if (h == NULL) 1918 err(1, "address: calloc"); 1919 h->ifname = NULL; 1920 h->af = AF_INET; 1921 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1922 set_ipmask(h, bits); 1923 h->next = NULL; 1924 h->tail = h; 1925 1926 return (h); 1927 } 1928 1929 struct node_host * 1930 host_v6(const char *s, int mask) 1931 { 1932 struct addrinfo hints, *res; 1933 struct node_host *h = NULL; 1934 1935 memset(&hints, 0, sizeof(hints)); 1936 hints.ai_family = AF_INET6; 1937 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1938 hints.ai_flags = AI_NUMERICHOST; 1939 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1940 h = calloc(1, sizeof(struct node_host)); 1941 if (h == NULL) 1942 err(1, "address: calloc"); 1943 h->ifname = NULL; 1944 h->af = AF_INET6; 1945 memcpy(&h->addr.v.a.addr, 1946 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1947 sizeof(h->addr.v.a.addr)); 1948 h->ifindex = 1949 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1950 set_ipmask(h, mask); 1951 freeaddrinfo(res); 1952 h->next = NULL; 1953 h->tail = h; 1954 } 1955 1956 return (h); 1957 } 1958 1959 struct node_host * 1960 host_dns(const char *s, int v4mask, int v6mask) 1961 { 1962 struct addrinfo hints, *res0, *res; 1963 struct node_host *n, *h = NULL; 1964 int error, noalias = 0; 1965 int got4 = 0, got6 = 0; 1966 char *p, *ps; 1967 1968 if ((ps = strdup(s)) == NULL) 1969 err(1, "host_dns: strdup"); 1970 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1971 noalias = 1; 1972 *p = '\0'; 1973 } 1974 memset(&hints, 0, sizeof(hints)); 1975 hints.ai_family = PF_UNSPEC; 1976 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1977 error = getaddrinfo(ps, NULL, &hints, &res0); 1978 if (error) { 1979 free(ps); 1980 return (h); 1981 } 1982 1983 for (res = res0; res; res = res->ai_next) { 1984 if (res->ai_family != AF_INET && 1985 res->ai_family != AF_INET6) 1986 continue; 1987 if (noalias) { 1988 if (res->ai_family == AF_INET) { 1989 if (got4) 1990 continue; 1991 got4 = 1; 1992 } else { 1993 if (got6) 1994 continue; 1995 got6 = 1; 1996 } 1997 } 1998 n = calloc(1, sizeof(struct node_host)); 1999 if (n == NULL) 2000 err(1, "host_dns: calloc"); 2001 n->ifname = NULL; 2002 n->af = res->ai_family; 2003 if (res->ai_family == AF_INET) { 2004 memcpy(&n->addr.v.a.addr, 2005 &((struct sockaddr_in *) 2006 res->ai_addr)->sin_addr.s_addr, 2007 sizeof(struct in_addr)); 2008 set_ipmask(n, v4mask); 2009 } else { 2010 memcpy(&n->addr.v.a.addr, 2011 &((struct sockaddr_in6 *) 2012 res->ai_addr)->sin6_addr.s6_addr, 2013 sizeof(struct in6_addr)); 2014 n->ifindex = 2015 ((struct sockaddr_in6 *) 2016 res->ai_addr)->sin6_scope_id; 2017 set_ipmask(n, v6mask); 2018 } 2019 n->next = NULL; 2020 n->tail = n; 2021 if (h == NULL) 2022 h = n; 2023 else { 2024 h->tail->next = n; 2025 h->tail = n; 2026 } 2027 } 2028 freeaddrinfo(res0); 2029 free(ps); 2030 2031 return (h); 2032 } 2033 2034 /* 2035 * convert a hostname to a list of addresses and put them in the given buffer. 2036 * test: 2037 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 2038 */ 2039 int 2040 append_addr(struct pfr_buffer *b, char *s, int test) 2041 { 2042 char *r; 2043 struct node_host *h, *n; 2044 int rv, not = 0; 2045 2046 for (r = s; *r == '!'; r++) 2047 not = !not; 2048 if ((n = host(r)) == NULL) { 2049 errno = 0; 2050 return (-1); 2051 } 2052 rv = append_addr_host(b, n, test, not); 2053 do { 2054 h = n; 2055 n = n->next; 2056 free(h); 2057 } while (n != NULL); 2058 return (rv); 2059 } 2060 2061 /* 2062 * same as previous function, but with a pre-parsed input and the ability 2063 * to "negate" the result. Does not free the node_host list. 2064 * not: 2065 * setting it to 1 is equivalent to adding "!" in front of parameter s. 2066 */ 2067 int 2068 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 2069 { 2070 int bits; 2071 struct pfr_addr addr; 2072 2073 do { 2074 bzero(&addr, sizeof(addr)); 2075 addr.pfra_not = n->not ^ not; 2076 addr.pfra_af = n->af; 2077 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 2078 switch (n->af) { 2079 case AF_INET: 2080 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 2081 bits = 32; 2082 break; 2083 case AF_INET6: 2084 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 2085 sizeof(struct in6_addr)); 2086 bits = 128; 2087 break; 2088 default: 2089 errno = EINVAL; 2090 return (-1); 2091 } 2092 if ((test && (not || addr.pfra_net != bits)) || 2093 addr.pfra_net > bits) { 2094 errno = EINVAL; 2095 return (-1); 2096 } 2097 if (pfr_buf_add(b, &addr)) 2098 return (-1); 2099 } while ((n = n->next) != NULL); 2100 2101 return (0); 2102 } 2103 2104 int 2105 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 2106 { 2107 struct pfioc_trans_e trans; 2108 2109 bzero(&trans, sizeof(trans)); 2110 trans.rs_num = rs_num; 2111 if (strlcpy(trans.anchor, anchor, 2112 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 2113 errx(1, "pfctl_add_trans: strlcpy"); 2114 2115 return pfr_buf_add(buf, &trans); 2116 } 2117 2118 u_int32_t 2119 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 2120 { 2121 struct pfioc_trans_e *p; 2122 2123 PFRB_FOREACH(p, buf) 2124 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 2125 return (p->ticket); 2126 errx(1, "pfctl_get_ticket: assertion failed"); 2127 } 2128 2129 int 2130 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 2131 { 2132 struct pfioc_trans trans; 2133 2134 bzero(&trans, sizeof(trans)); 2135 trans.size = buf->pfrb_size - from; 2136 trans.esize = sizeof(struct pfioc_trans_e); 2137 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 2138 return ioctl(dev, cmd, &trans); 2139 } 2140