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/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 39 #include <sys/types.h> 40 #include <sys/ioctl.h> 41 #include <sys/socket.h> 42 #include <sys/param.h> 43 #include <sys/proc.h> 44 #include <net/if.h> 45 #include <netinet/in.h> 46 #include <netinet/in_systm.h> 47 #include <netinet/ip.h> 48 #include <netinet/ip_icmp.h> 49 #include <netinet/icmp6.h> 50 #include <net/pfvar.h> 51 #include <arpa/inet.h> 52 53 #include <assert.h> 54 #include <search.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <ctype.h> 59 #include <netdb.h> 60 #include <stdarg.h> 61 #include <errno.h> 62 #include <err.h> 63 #include <ifaddrs.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 (u_int8_t); 73 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 74 struct pf_rule_addr *, u_int8_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 = "FSRPAUEW"; 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 { "udp.first", PFTM_UDP_FIRST_PACKET }, 198 { "udp.single", PFTM_UDP_SINGLE }, 199 { "udp.multiple", PFTM_UDP_MULTIPLE }, 200 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 201 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 202 { "other.first", PFTM_OTHER_FIRST_PACKET }, 203 { "other.single", PFTM_OTHER_SINGLE }, 204 { "other.multiple", PFTM_OTHER_MULTIPLE }, 205 { "frag", PFTM_FRAG }, 206 { "interval", PFTM_INTERVAL }, 207 { "adaptive.start", PFTM_ADAPTIVE_START }, 208 { "adaptive.end", PFTM_ADAPTIVE_END }, 209 { "src.track", PFTM_SRC_NODE }, 210 { NULL, 0 } 211 }; 212 213 static struct hsearch_data isgroup_map; 214 215 static __attribute__((constructor)) void 216 pfctl_parser_init(void) 217 { 218 /* 219 * As hdestroy() will never be called on these tables, it will be 220 * safe to use references into the stored data as keys. 221 */ 222 if (hcreate_r(0, &isgroup_map) == 0) 223 err(1, "Failed to create interface group query response map"); 224 } 225 226 const struct icmptypeent * 227 geticmptypebynumber(u_int8_t type, sa_family_t af) 228 { 229 unsigned int i; 230 231 if (af != AF_INET6) { 232 for (i=0; i < nitems(icmp_type); i++) { 233 if (type == icmp_type[i].type) 234 return (&icmp_type[i]); 235 } 236 } else { 237 for (i=0; i < nitems(icmp6_type); i++) { 238 if (type == icmp6_type[i].type) 239 return (&icmp6_type[i]); 240 } 241 } 242 return (NULL); 243 } 244 245 const struct icmptypeent * 246 geticmptypebyname(char *w, sa_family_t af) 247 { 248 unsigned int i; 249 250 if (af != AF_INET6) { 251 for (i=0; i < nitems(icmp_type); i++) { 252 if (!strcmp(w, icmp_type[i].name)) 253 return (&icmp_type[i]); 254 } 255 } else { 256 for (i=0; i < nitems(icmp6_type); i++) { 257 if (!strcmp(w, icmp6_type[i].name)) 258 return (&icmp6_type[i]); 259 } 260 } 261 return (NULL); 262 } 263 264 const struct icmpcodeent * 265 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 266 { 267 unsigned int i; 268 269 if (af != AF_INET6) { 270 for (i=0; i < nitems(icmp_code); i++) { 271 if (type == icmp_code[i].type && 272 code == icmp_code[i].code) 273 return (&icmp_code[i]); 274 } 275 } else { 276 for (i=0; i < nitems(icmp6_code); i++) { 277 if (type == icmp6_code[i].type && 278 code == icmp6_code[i].code) 279 return (&icmp6_code[i]); 280 } 281 } 282 return (NULL); 283 } 284 285 const struct icmpcodeent * 286 geticmpcodebyname(u_long type, char *w, sa_family_t af) 287 { 288 unsigned int i; 289 290 if (af != AF_INET6) { 291 for (i=0; i < nitems(icmp_code); i++) { 292 if (type == icmp_code[i].type && 293 !strcmp(w, icmp_code[i].name)) 294 return (&icmp_code[i]); 295 } 296 } else { 297 for (i=0; i < nitems(icmp6_code); i++) { 298 if (type == icmp6_code[i].type && 299 !strcmp(w, icmp6_code[i].name)) 300 return (&icmp6_code[i]); 301 } 302 } 303 return (NULL); 304 } 305 306 void 307 print_op(u_int8_t op, const char *a1, const char *a2) 308 { 309 if (op == PF_OP_IRG) 310 printf(" %s >< %s", a1, a2); 311 else if (op == PF_OP_XRG) 312 printf(" %s <> %s", a1, a2); 313 else if (op == PF_OP_EQ) 314 printf(" = %s", a1); 315 else if (op == PF_OP_NE) 316 printf(" != %s", a1); 317 else if (op == PF_OP_LT) 318 printf(" < %s", a1); 319 else if (op == PF_OP_LE) 320 printf(" <= %s", a1); 321 else if (op == PF_OP_GT) 322 printf(" > %s", a1); 323 else if (op == PF_OP_GE) 324 printf(" >= %s", a1); 325 else if (op == PF_OP_RRG) 326 printf(" %s:%s", a1, a2); 327 } 328 329 void 330 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric) 331 { 332 char a1[6], a2[6]; 333 struct servent *s; 334 335 if (!numeric) 336 s = getservbyport(p1, proto); 337 else 338 s = NULL; 339 p1 = ntohs(p1); 340 p2 = ntohs(p2); 341 snprintf(a1, sizeof(a1), "%u", p1); 342 snprintf(a2, sizeof(a2), "%u", p2); 343 printf(" port"); 344 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 345 print_op(op, s->s_name, a2); 346 else 347 print_op(op, a1, a2); 348 } 349 350 void 351 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 352 { 353 char a1[11], a2[11]; 354 355 snprintf(a1, sizeof(a1), "%u", u1); 356 snprintf(a2, sizeof(a2), "%u", u2); 357 printf(" %s", t); 358 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 359 print_op(op, "unknown", a2); 360 else 361 print_op(op, a1, a2); 362 } 363 364 void 365 print_flags(u_int8_t f) 366 { 367 int i; 368 369 for (i = 0; tcpflags[i]; ++i) 370 if (f & (1 << i)) 371 printf("%c", tcpflags[i]); 372 } 373 374 void 375 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 376 sa_family_t af, u_int8_t proto, int verbose, int numeric) 377 { 378 char buf[PF_OSFP_LEN*3]; 379 if (src->addr.type == PF_ADDR_ADDRMASK && 380 dst->addr.type == PF_ADDR_ADDRMASK && 381 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 382 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 383 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 384 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 385 !src->neg && !dst->neg && 386 !src->port_op && !dst->port_op && 387 osfp == PF_OSFP_ANY) 388 printf(" all"); 389 else { 390 printf(" from "); 391 if (src->neg) 392 printf("! "); 393 print_addr(&src->addr, af, verbose); 394 if (src->port_op) 395 print_port(src->port_op, src->port[0], 396 src->port[1], 397 proto == IPPROTO_TCP ? "tcp" : "udp", 398 numeric); 399 if (osfp != PF_OSFP_ANY) 400 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 401 sizeof(buf))); 402 403 printf(" to "); 404 if (dst->neg) 405 printf("! "); 406 print_addr(&dst->addr, af, verbose); 407 if (dst->port_op) 408 print_port(dst->port_op, dst->port[0], 409 dst->port[1], 410 proto == IPPROTO_TCP ? "tcp" : "udp", 411 numeric); 412 } 413 } 414 415 void 416 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2, 417 sa_family_t af, int id) 418 { 419 struct pf_pooladdr *pooladdr; 420 421 if ((TAILQ_FIRST(&pool->list) != NULL) && 422 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 423 printf("{ "); 424 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 425 switch (id) { 426 case PF_NAT: 427 case PF_RDR: 428 case PF_BINAT: 429 print_addr(&pooladdr->addr, af, 0); 430 break; 431 case PF_PASS: 432 case PF_MATCH: 433 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 434 printf("%s", pooladdr->ifname); 435 else { 436 printf("(%s ", pooladdr->ifname); 437 print_addr(&pooladdr->addr, af, 0); 438 printf(")"); 439 } 440 break; 441 default: 442 break; 443 } 444 if (TAILQ_NEXT(pooladdr, entries) != NULL) 445 printf(", "); 446 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 447 printf(" }"); 448 } 449 switch (id) { 450 case PF_NAT: 451 if ((p1 != PF_NAT_PROXY_PORT_LOW || 452 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 453 if (p1 == p2) 454 printf(" port %u", p1); 455 else 456 printf(" port %u:%u", p1, p2); 457 } 458 break; 459 case PF_RDR: 460 if (p1) { 461 printf(" port %u", p1); 462 if (p2 && (p2 != p1)) 463 printf(":%u", p2); 464 } 465 break; 466 default: 467 break; 468 } 469 switch (pool->opts & PF_POOL_TYPEMASK) { 470 case PF_POOL_NONE: 471 break; 472 case PF_POOL_BITMASK: 473 printf(" bitmask"); 474 break; 475 case PF_POOL_RANDOM: 476 printf(" random"); 477 break; 478 case PF_POOL_SRCHASH: 479 printf(" source-hash 0x%08x%08x%08x%08x", 480 pool->key.key32[0], pool->key.key32[1], 481 pool->key.key32[2], pool->key.key32[3]); 482 break; 483 case PF_POOL_ROUNDROBIN: 484 printf(" round-robin"); 485 break; 486 } 487 if (pool->opts & PF_POOL_STICKYADDR) 488 printf(" sticky-address"); 489 if (id == PF_NAT && p1 == 0 && p2 == 0) 490 printf(" static-port"); 491 if (pool->mape.offset > 0) 492 printf(" map-e-portset %u/%u/%u", 493 pool->mape.offset, pool->mape.psidlen, pool->mape.psid); 494 } 495 496 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 497 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 498 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 499 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 500 501 void 502 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts) 503 { 504 struct pfctl_status_counter *c; 505 char statline[80], *running; 506 time_t runtime; 507 int i; 508 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 509 static const char hex[] = "0123456789abcdef"; 510 511 runtime = time(NULL) - s->since; 512 running = s->running ? "Enabled" : "Disabled"; 513 514 if (s->since) { 515 unsigned int sec, min, hrs, day = runtime; 516 517 sec = day % 60; 518 day /= 60; 519 min = day % 60; 520 day /= 60; 521 hrs = day % 24; 522 day /= 24; 523 snprintf(statline, sizeof(statline), 524 "Status: %s for %u days %.2u:%.2u:%.2u", 525 running, day, hrs, min, sec); 526 } else 527 snprintf(statline, sizeof(statline), "Status: %s", running); 528 printf("%-44s", statline); 529 switch (s->debug) { 530 case PF_DEBUG_NONE: 531 printf("%15s\n\n", "Debug: None"); 532 break; 533 case PF_DEBUG_URGENT: 534 printf("%15s\n\n", "Debug: Urgent"); 535 break; 536 case PF_DEBUG_MISC: 537 printf("%15s\n\n", "Debug: Misc"); 538 break; 539 case PF_DEBUG_NOISY: 540 printf("%15s\n\n", "Debug: Loud"); 541 break; 542 } 543 544 if (opts & PF_OPT_VERBOSE) { 545 printf("Hostid: 0x%08x\n", s->hostid); 546 547 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 548 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 549 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 550 } 551 buf[i + i] = '\0'; 552 printf("Checksum: 0x%s\n\n", buf); 553 } 554 555 if (s->ifname[0] != 0) { 556 printf("Interface Stats for %-16s %5s %16s\n", 557 s->ifname, "IPv4", "IPv6"); 558 printf(" %-25s %14llu %16llu\n", "Bytes In", 559 (unsigned long long)s->bcounters[0][0], 560 (unsigned long long)s->bcounters[1][0]); 561 printf(" %-25s %14llu %16llu\n", "Bytes Out", 562 (unsigned long long)s->bcounters[0][1], 563 (unsigned long long)s->bcounters[1][1]); 564 printf(" Packets In\n"); 565 printf(" %-23s %14llu %16llu\n", "Passed", 566 (unsigned long long)s->pcounters[0][0][PF_PASS], 567 (unsigned long long)s->pcounters[1][0][PF_PASS]); 568 printf(" %-23s %14llu %16llu\n", "Blocked", 569 (unsigned long long)s->pcounters[0][0][PF_DROP], 570 (unsigned long long)s->pcounters[1][0][PF_DROP]); 571 printf(" Packets Out\n"); 572 printf(" %-23s %14llu %16llu\n", "Passed", 573 (unsigned long long)s->pcounters[0][1][PF_PASS], 574 (unsigned long long)s->pcounters[1][1][PF_PASS]); 575 printf(" %-23s %14llu %16llu\n\n", "Blocked", 576 (unsigned long long)s->pcounters[0][1][PF_DROP], 577 (unsigned long long)s->pcounters[1][1][PF_DROP]); 578 } 579 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 580 printf(" %-25s %14ju %14s\n", "current entries", s->states, ""); 581 TAILQ_FOREACH(c, &s->fcounters, entry) { 582 printf(" %-25s %14ju ", c->name, c->counter); 583 if (runtime > 0) 584 printf("%14.1f/s\n", 585 (double)c->counter / (double)runtime); 586 else 587 printf("%14s\n", ""); 588 } 589 if (opts & PF_OPT_VERBOSE) { 590 printf("Source Tracking Table\n"); 591 printf(" %-25s %14ju %14s\n", "current entries", 592 s->src_nodes, ""); 593 TAILQ_FOREACH(c, &s->scounters, entry) { 594 printf(" %-25s %14ju ", c->name, c->counter); 595 if (runtime > 0) 596 printf("%14.1f/s\n", 597 (double)c->counter / (double)runtime); 598 else 599 printf("%14s\n", ""); 600 } 601 } 602 printf("Counters\n"); 603 TAILQ_FOREACH(c, &s->counters, entry) { 604 printf(" %-25s %14ju ", c->name, c->counter); 605 if (runtime > 0) 606 printf("%14.1f/s\n", 607 (double)c->counter / (double)runtime); 608 else 609 printf("%14s\n", ""); 610 } 611 if (opts & PF_OPT_VERBOSE) { 612 printf("Limit Counters\n"); 613 TAILQ_FOREACH(c, &s->lcounters, entry) { 614 printf(" %-25s %14ju ", c->name, c->counter); 615 if (runtime > 0) 616 printf("%14.1f/s\n", 617 (double)c->counter / (double)runtime); 618 else 619 printf("%14s\n", ""); 620 } 621 622 printf("Syncookies\n"); 623 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE); 624 printf(" %-25s %s\n", "mode", 625 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]); 626 printf(" %-25s %s\n", "active", 627 s->syncookies_active ? "active" : "inactive"); 628 printf("Reassemble %24s %s\n", 629 s->reass & PF_REASS_ENABLED ? "yes" : "no", 630 s->reass & PF_REASS_NODF ? "no-df" : "" 631 ); 632 } 633 } 634 635 void 636 print_running(struct pfctl_status *status) 637 { 638 printf("%s\n", status->running ? "Enabled" : "Disabled"); 639 } 640 641 void 642 print_src_node(struct pf_src_node *sn, int opts) 643 { 644 struct pf_addr_wrap aw; 645 int min, sec; 646 647 memset(&aw, 0, sizeof(aw)); 648 if (sn->af == AF_INET) 649 aw.v.a.mask.addr32[0] = 0xffffffff; 650 else 651 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 652 653 aw.v.a.addr = sn->addr; 654 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 655 printf(" -> "); 656 aw.v.a.addr = sn->raddr; 657 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 658 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 659 sn->conn, sn->conn_rate.count / 1000, 660 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 661 if (opts & PF_OPT_VERBOSE) { 662 sec = sn->creation % 60; 663 sn->creation /= 60; 664 min = sn->creation % 60; 665 sn->creation /= 60; 666 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 667 if (sn->states == 0) { 668 sec = sn->expire % 60; 669 sn->expire /= 60; 670 min = sn->expire % 60; 671 sn->expire /= 60; 672 printf(", expires in %.2u:%.2u:%.2u", 673 sn->expire, min, sec); 674 } 675 printf(", %llu pkts, %llu bytes", 676 #ifdef __FreeBSD__ 677 (unsigned long long)(sn->packets[0] + sn->packets[1]), 678 (unsigned long long)(sn->bytes[0] + sn->bytes[1])); 679 #else 680 sn->packets[0] + sn->packets[1], 681 sn->bytes[0] + sn->bytes[1]); 682 #endif 683 switch (sn->ruletype) { 684 case PF_NAT: 685 if (sn->rule.nr != -1) 686 printf(", nat rule %u", sn->rule.nr); 687 break; 688 case PF_RDR: 689 if (sn->rule.nr != -1) 690 printf(", rdr rule %u", sn->rule.nr); 691 break; 692 case PF_PASS: 693 case PF_MATCH: 694 if (sn->rule.nr != -1) 695 printf(", filter rule %u", sn->rule.nr); 696 break; 697 } 698 printf("\n"); 699 } 700 } 701 702 static void 703 print_eth_addr(const struct pfctl_eth_addr *a) 704 { 705 int i, masklen = ETHER_ADDR_LEN * 8; 706 bool seen_unset = false; 707 708 for (i = 0; i < ETHER_ADDR_LEN; i++) { 709 if (a->addr[i] != 0) 710 break; 711 } 712 713 /* Unset, so don't print anything. */ 714 if (i == ETHER_ADDR_LEN) 715 return; 716 717 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "", 718 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4], 719 a->addr[5]); 720 721 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) { 722 bool isset = a->mask[i / 8] & (1 << i % 8); 723 724 if (! seen_unset) { 725 if (isset) 726 continue; 727 seen_unset = true; 728 masklen = i; 729 } else { 730 /* Not actually a continuous mask, so print the whole 731 * thing. */ 732 if (isset) 733 break; 734 continue; 735 } 736 } 737 738 if (masklen == (ETHER_ADDR_LEN * 8)) 739 return; 740 741 if (i == (ETHER_ADDR_LEN * 8)) { 742 printf("/%d", masklen); 743 return; 744 } 745 746 printf("&%02x:%02x:%02x:%02x:%02x:%02x", 747 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4], 748 a->mask[5]); 749 } 750 751 void 752 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call, 753 int rule_numbers) 754 { 755 static const char *actiontypes[] = { "pass", "block", "", "", "", "", 756 "", "", "", "", "", "", "match" }; 757 758 if (rule_numbers) 759 printf("@%u ", r->nr); 760 761 printf("ether "); 762 if (anchor_call[0]) { 763 if (anchor_call[0] == '_') { 764 printf("anchor"); 765 } else 766 printf("anchor \"%s\"", anchor_call); 767 } else { 768 printf("%s", actiontypes[r->action]); 769 } 770 if (r->direction == PF_IN) 771 printf(" in"); 772 else if (r->direction == PF_OUT) 773 printf(" out"); 774 775 if (r->quick) 776 printf(" quick"); 777 if (r->ifname[0]) { 778 if (r->ifnot) 779 printf(" on ! %s", r->ifname); 780 else 781 printf(" on %s", r->ifname); 782 } 783 if (r->bridge_to[0]) 784 printf(" bridge-to %s", r->bridge_to); 785 if (r->proto) 786 printf(" proto 0x%04x", r->proto); 787 788 if (r->src.isset) { 789 printf(" from "); 790 print_eth_addr(&r->src); 791 } 792 if (r->dst.isset) { 793 printf(" to "); 794 print_eth_addr(&r->dst); 795 } 796 printf(" l3"); 797 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst, 798 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0, 799 0, 0); 800 if (r->qname[0]) 801 printf(" queue %s", r->qname); 802 if (r->tagname[0]) 803 printf(" tag %s", r->tagname); 804 if (r->match_tagname[0]) { 805 if (r->match_tag_not) 806 printf(" !"); 807 printf(" tagged %s", r->match_tagname); 808 } 809 if (r->dnpipe) 810 printf(" %s %d", 811 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 812 r->dnpipe); 813 } 814 815 void 816 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric) 817 { 818 static const char *actiontypes[] = { "pass", "block", "scrub", 819 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr", 820 "", "", "match"}; 821 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 822 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 823 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 824 int i, opts; 825 char *p; 826 827 if (verbose) 828 printf("@%d ", r->nr); 829 if (r->action == PF_MATCH) 830 printf("match"); 831 else if (r->action > PF_NORDR) 832 printf("action(%d)", r->action); 833 else if (anchor_call[0]) { 834 p = strrchr(anchor_call, '/'); 835 if (p ? p[1] == '_' : anchor_call[0] == '_') 836 printf("%s", anchortypes[r->action]); 837 else 838 printf("%s \"%s\"", anchortypes[r->action], 839 anchor_call); 840 } else { 841 printf("%s", actiontypes[r->action]); 842 if (r->natpass) 843 printf(" pass"); 844 } 845 if (r->action == PF_DROP) { 846 if (r->rule_flag & PFRULE_RETURN) 847 printf(" return"); 848 else if (r->rule_flag & PFRULE_RETURNRST) { 849 if (!r->return_ttl) 850 printf(" return-rst"); 851 else 852 printf(" return-rst(ttl %d)", r->return_ttl); 853 } else if (r->rule_flag & PFRULE_RETURNICMP) { 854 const struct icmpcodeent *ic, *ic6; 855 856 ic = geticmpcodebynumber(r->return_icmp >> 8, 857 r->return_icmp & 255, AF_INET); 858 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 859 r->return_icmp6 & 255, AF_INET6); 860 861 switch (r->af) { 862 case AF_INET: 863 printf(" return-icmp"); 864 if (ic == NULL) 865 printf("(%u)", r->return_icmp & 255); 866 else 867 printf("(%s)", ic->name); 868 break; 869 case AF_INET6: 870 printf(" return-icmp6"); 871 if (ic6 == NULL) 872 printf("(%u)", r->return_icmp6 & 255); 873 else 874 printf("(%s)", ic6->name); 875 break; 876 default: 877 printf(" return-icmp"); 878 if (ic == NULL) 879 printf("(%u, ", r->return_icmp & 255); 880 else 881 printf("(%s, ", ic->name); 882 if (ic6 == NULL) 883 printf("%u)", r->return_icmp6 & 255); 884 else 885 printf("%s)", ic6->name); 886 break; 887 } 888 } else 889 printf(" drop"); 890 } 891 if (r->direction == PF_IN) 892 printf(" in"); 893 else if (r->direction == PF_OUT) 894 printf(" out"); 895 if (r->log) { 896 printf(" log"); 897 if (r->log & ~PF_LOG || r->logif) { 898 int count = 0; 899 900 printf(" ("); 901 if (r->log & PF_LOG_ALL) 902 printf("%sall", count++ ? ", " : ""); 903 if (r->log & PF_LOG_SOCKET_LOOKUP) 904 printf("%suser", count++ ? ", " : ""); 905 if (r->logif) 906 printf("%sto pflog%u", count++ ? ", " : "", 907 r->logif); 908 printf(")"); 909 } 910 } 911 if (r->quick) 912 printf(" quick"); 913 if (r->ifname[0]) { 914 if (r->ifnot) 915 printf(" on ! %s", r->ifname); 916 else 917 printf(" on %s", r->ifname); 918 } 919 if (r->rt) { 920 if (r->rt == PF_ROUTETO) 921 printf(" route-to"); 922 else if (r->rt == PF_REPLYTO) 923 printf(" reply-to"); 924 else if (r->rt == PF_DUPTO) 925 printf(" dup-to"); 926 printf(" "); 927 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 928 } 929 if (r->af) { 930 if (r->af == AF_INET) 931 printf(" inet"); 932 else 933 printf(" inet6"); 934 } 935 if (r->proto) { 936 const char *protoname; 937 938 if ((protoname = pfctl_proto2name(r->proto)) != NULL) 939 printf(" proto %s", protoname); 940 else 941 printf(" proto %u", r->proto); 942 } 943 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 944 verbose, numeric); 945 if (r->uid.op) 946 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 947 UID_MAX); 948 if (r->gid.op) 949 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 950 GID_MAX); 951 if (r->flags || r->flagset) { 952 printf(" flags "); 953 print_flags(r->flags); 954 printf("/"); 955 print_flags(r->flagset); 956 } else if ((r->action == PF_PASS || r->action == PF_MATCH) && 957 (!r->proto || r->proto == IPPROTO_TCP) && 958 !(r->rule_flag & PFRULE_FRAGMENT) && 959 !anchor_call[0] && r->keep_state) 960 printf(" flags any"); 961 if (r->type) { 962 const struct icmptypeent *it; 963 964 it = geticmptypebynumber(r->type-1, r->af); 965 if (r->af != AF_INET6) 966 printf(" icmp-type"); 967 else 968 printf(" icmp6-type"); 969 if (it != NULL) 970 printf(" %s", it->name); 971 else 972 printf(" %u", r->type-1); 973 if (r->code) { 974 const struct icmpcodeent *ic; 975 976 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 977 if (ic != NULL) 978 printf(" code %s", ic->name); 979 else 980 printf(" code %u", r->code-1); 981 } 982 } 983 if (r->tos) 984 printf(" tos 0x%2.2x", r->tos); 985 if (r->prio) 986 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 987 if (r->scrub_flags & PFSTATE_SETMASK) { 988 char *comma = ""; 989 printf(" set ("); 990 if (r->scrub_flags & PFSTATE_SETPRIO) { 991 if (r->set_prio[0] == r->set_prio[1]) 992 printf("%s prio %u", comma, r->set_prio[0]); 993 else 994 printf("%s prio(%u, %u)", comma, r->set_prio[0], 995 r->set_prio[1]); 996 comma = ","; 997 } 998 if (r->scrub_flags & PFSTATE_SETTOS) { 999 printf("%s tos 0x%2.2x", comma, r->set_tos); 1000 comma = ","; 1001 } 1002 printf(" )"); 1003 } 1004 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 1005 printf(" no state"); 1006 else if (r->keep_state == PF_STATE_NORMAL) 1007 printf(" keep state"); 1008 else if (r->keep_state == PF_STATE_MODULATE) 1009 printf(" modulate state"); 1010 else if (r->keep_state == PF_STATE_SYNPROXY) 1011 printf(" synproxy state"); 1012 if (r->prob) { 1013 char buf[20]; 1014 1015 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 1016 for (i = strlen(buf)-1; i > 0; i--) { 1017 if (buf[i] == '0') 1018 buf[i] = '\0'; 1019 else { 1020 if (buf[i] == '.') 1021 buf[i] = '\0'; 1022 break; 1023 } 1024 } 1025 printf(" probability %s%%", buf); 1026 } 1027 opts = 0; 1028 if (r->max_states || r->max_src_nodes || r->max_src_states) 1029 opts = 1; 1030 if (r->rule_flag & PFRULE_NOSYNC) 1031 opts = 1; 1032 if (r->rule_flag & PFRULE_SRCTRACK) 1033 opts = 1; 1034 if (r->rule_flag & PFRULE_IFBOUND) 1035 opts = 1; 1036 if (r->rule_flag & PFRULE_STATESLOPPY) 1037 opts = 1; 1038 for (i = 0; !opts && i < PFTM_MAX; ++i) 1039 if (r->timeout[i]) 1040 opts = 1; 1041 if (opts) { 1042 printf(" ("); 1043 if (r->max_states) { 1044 printf("max %u", r->max_states); 1045 opts = 0; 1046 } 1047 if (r->rule_flag & PFRULE_NOSYNC) { 1048 if (!opts) 1049 printf(", "); 1050 printf("no-sync"); 1051 opts = 0; 1052 } 1053 if (r->rule_flag & PFRULE_SRCTRACK) { 1054 if (!opts) 1055 printf(", "); 1056 printf("source-track"); 1057 if (r->rule_flag & PFRULE_RULESRCTRACK) 1058 printf(" rule"); 1059 else 1060 printf(" global"); 1061 opts = 0; 1062 } 1063 if (r->max_src_states) { 1064 if (!opts) 1065 printf(", "); 1066 printf("max-src-states %u", r->max_src_states); 1067 opts = 0; 1068 } 1069 if (r->max_src_conn) { 1070 if (!opts) 1071 printf(", "); 1072 printf("max-src-conn %u", r->max_src_conn); 1073 opts = 0; 1074 } 1075 if (r->max_src_conn_rate.limit) { 1076 if (!opts) 1077 printf(", "); 1078 printf("max-src-conn-rate %u/%u", 1079 r->max_src_conn_rate.limit, 1080 r->max_src_conn_rate.seconds); 1081 opts = 0; 1082 } 1083 if (r->max_src_nodes) { 1084 if (!opts) 1085 printf(", "); 1086 printf("max-src-nodes %u", r->max_src_nodes); 1087 opts = 0; 1088 } 1089 if (r->overload_tblname[0]) { 1090 if (!opts) 1091 printf(", "); 1092 printf("overload <%s>", r->overload_tblname); 1093 if (r->flush) 1094 printf(" flush"); 1095 if (r->flush & PF_FLUSH_GLOBAL) 1096 printf(" global"); 1097 } 1098 if (r->rule_flag & PFRULE_IFBOUND) { 1099 if (!opts) 1100 printf(", "); 1101 printf("if-bound"); 1102 opts = 0; 1103 } 1104 if (r->rule_flag & PFRULE_STATESLOPPY) { 1105 if (!opts) 1106 printf(", "); 1107 printf("sloppy"); 1108 opts = 0; 1109 } 1110 for (i = 0; i < PFTM_MAX; ++i) 1111 if (r->timeout[i]) { 1112 int j; 1113 1114 if (!opts) 1115 printf(", "); 1116 opts = 0; 1117 for (j = 0; pf_timeouts[j].name != NULL; 1118 ++j) 1119 if (pf_timeouts[j].timeout == i) 1120 break; 1121 printf("%s %u", pf_timeouts[j].name == NULL ? 1122 "inv.timeout" : pf_timeouts[j].name, 1123 r->timeout[i]); 1124 } 1125 printf(")"); 1126 } 1127 if (r->allow_opts) 1128 printf(" allow-opts"); 1129 if (r->rule_flag & PFRULE_FRAGMENT) 1130 printf(" fragment"); 1131 if (r->action == PF_SCRUB) { 1132 /* Scrub flags for old-style scrub. */ 1133 if (r->rule_flag & PFRULE_NODF) 1134 printf(" no-df"); 1135 if (r->rule_flag & PFRULE_RANDOMID) 1136 printf(" random-id"); 1137 if (r->min_ttl) 1138 printf(" min-ttl %d", r->min_ttl); 1139 if (r->max_mss) 1140 printf(" max-mss %d", r->max_mss); 1141 if (r->rule_flag & PFRULE_SET_TOS) 1142 printf(" set-tos 0x%2.2x", r->set_tos); 1143 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1144 printf(" reassemble tcp"); 1145 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */ 1146 printf(" fragment %sreassemble", 1147 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : ""); 1148 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) { 1149 /* Scrub actions on normal rules. */ 1150 printf(" scrub("); 1151 if (r->scrub_flags & PFSTATE_NODF) 1152 printf(" no-df"); 1153 if (r->scrub_flags & PFSTATE_RANDOMID) 1154 printf(" random-id"); 1155 if (r->min_ttl) 1156 printf(" min-ttl %d", r->min_ttl); 1157 if (r->scrub_flags & PFSTATE_SETTOS) 1158 printf(" set-tos 0x%2.2x", r->set_tos); 1159 if (r->scrub_flags & PFSTATE_SCRUB_TCP) 1160 printf(" reassemble tcp"); 1161 if (r->max_mss) 1162 printf(" max-mss %d", r->max_mss); 1163 printf(")"); 1164 } 1165 i = 0; 1166 while (r->label[i][0]) 1167 printf(" label \"%s\"", r->label[i++]); 1168 if (r->ridentifier) 1169 printf(" ridentifier %u", r->ridentifier); 1170 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */ 1171 if (r->dnrpipe) 1172 printf(" %s(%d, %d)", 1173 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1174 r->dnpipe, r->dnrpipe); 1175 else if (r->dnpipe) 1176 printf(" %s %d", 1177 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1178 r->dnpipe); 1179 if (r->qname[0] && r->pqname[0]) 1180 printf(" queue(%s, %s)", r->qname, r->pqname); 1181 else if (r->qname[0]) 1182 printf(" queue %s", r->qname); 1183 if (r->tagname[0]) 1184 printf(" tag %s", r->tagname); 1185 if (r->match_tagname[0]) { 1186 if (r->match_tag_not) 1187 printf(" !"); 1188 printf(" tagged %s", r->match_tagname); 1189 } 1190 if (r->rtableid != -1) 1191 printf(" rtable %u", r->rtableid); 1192 if (r->divert.port) { 1193 #ifdef __FreeBSD__ 1194 printf(" divert-to %u", ntohs(r->divert.port)); 1195 #else 1196 if (PF_AZERO(&r->divert.addr, r->af)) { 1197 printf(" divert-reply"); 1198 } else { 1199 /* XXX cut&paste from print_addr */ 1200 char buf[48]; 1201 1202 printf(" divert-to "); 1203 if (inet_ntop(r->af, &r->divert.addr, buf, 1204 sizeof(buf)) == NULL) 1205 printf("?"); 1206 else 1207 printf("%s", buf); 1208 printf(" port %u", ntohs(r->divert.port)); 1209 } 1210 #endif 1211 } 1212 if (!anchor_call[0] && (r->action == PF_NAT || 1213 r->action == PF_BINAT || r->action == PF_RDR)) { 1214 printf(" -> "); 1215 print_pool(&r->rpool, r->rpool.proxy_port[0], 1216 r->rpool.proxy_port[1], r->af, r->action); 1217 } 1218 } 1219 1220 void 1221 print_tabledef(const char *name, int flags, int addrs, 1222 struct node_tinithead *nodes) 1223 { 1224 struct node_tinit *ti, *nti; 1225 struct node_host *h; 1226 1227 printf("table <%s>", name); 1228 if (flags & PFR_TFLAG_CONST) 1229 printf(" const"); 1230 if (flags & PFR_TFLAG_PERSIST) 1231 printf(" persist"); 1232 if (flags & PFR_TFLAG_COUNTERS) 1233 printf(" counters"); 1234 SIMPLEQ_FOREACH(ti, nodes, entries) { 1235 if (ti->file) { 1236 printf(" file \"%s\"", ti->file); 1237 continue; 1238 } 1239 printf(" {"); 1240 for (;;) { 1241 for (h = ti->host; h != NULL; h = h->next) { 1242 printf(h->not ? " !" : " "); 1243 print_addr(&h->addr, h->af, 0); 1244 } 1245 nti = SIMPLEQ_NEXT(ti, entries); 1246 if (nti != NULL && nti->file == NULL) 1247 ti = nti; /* merge lists */ 1248 else 1249 break; 1250 } 1251 printf(" }"); 1252 } 1253 if (addrs && SIMPLEQ_EMPTY(nodes)) 1254 printf(" { }"); 1255 printf("\n"); 1256 } 1257 1258 int 1259 parse_flags(char *s) 1260 { 1261 char *p, *q; 1262 u_int8_t f = 0; 1263 1264 for (p = s; *p; p++) { 1265 if ((q = strchr(tcpflags, *p)) == NULL) 1266 return -1; 1267 else 1268 f |= 1 << (q - tcpflags); 1269 } 1270 return (f ? f : PF_TH_ALL); 1271 } 1272 1273 void 1274 set_ipmask(struct node_host *h, u_int8_t b) 1275 { 1276 struct pf_addr *m, *n; 1277 int i, j = 0; 1278 1279 m = &h->addr.v.a.mask; 1280 memset(m, 0, sizeof(*m)); 1281 1282 while (b >= 32) { 1283 m->addr32[j++] = 0xffffffff; 1284 b -= 32; 1285 } 1286 for (i = 31; i > 31-b; --i) 1287 m->addr32[j] |= (1 << i); 1288 if (b) 1289 m->addr32[j] = htonl(m->addr32[j]); 1290 1291 /* Mask off bits of the address that will never be used. */ 1292 n = &h->addr.v.a.addr; 1293 if (h->addr.type == PF_ADDR_ADDRMASK) 1294 for (i = 0; i < 4; i++) 1295 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1296 } 1297 1298 int 1299 check_netmask(struct node_host *h, sa_family_t af) 1300 { 1301 struct node_host *n = NULL; 1302 struct pf_addr *m; 1303 1304 for (n = h; n != NULL; n = n->next) { 1305 if (h->addr.type == PF_ADDR_TABLE) 1306 continue; 1307 m = &h->addr.v.a.mask; 1308 /* fix up netmask for dynaddr */ 1309 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1310 unmask(m, AF_INET6) > 32) 1311 set_ipmask(n, 32); 1312 /* netmasks > 32 bit are invalid on v4 */ 1313 if (af == AF_INET && 1314 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1315 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1316 unmask(m, AF_INET6)); 1317 return (1); 1318 } 1319 } 1320 return (0); 1321 } 1322 1323 /* interface lookup routines */ 1324 1325 static struct node_host *iftab; 1326 1327 /* 1328 * Retrieve the list of groups this interface is a member of and make sure 1329 * each group is in the group map. 1330 */ 1331 static void 1332 ifa_add_groups_to_map(char *ifa_name) 1333 { 1334 int s, len; 1335 struct ifgroupreq ifgr; 1336 struct ifg_req *ifg; 1337 1338 s = get_query_socket(); 1339 1340 /* Get size of group list for this interface */ 1341 memset(&ifgr, 0, sizeof(ifgr)); 1342 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1343 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1344 err(1, "SIOCGIFGROUP"); 1345 1346 /* Retrieve group list for this interface */ 1347 len = ifgr.ifgr_len; 1348 ifgr.ifgr_groups = 1349 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1350 sizeof(struct ifg_req)); 1351 if (ifgr.ifgr_groups == NULL) 1352 err(1, "calloc"); 1353 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1354 err(1, "SIOCGIFGROUP"); 1355 1356 ifg = ifgr.ifgr_groups; 1357 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1358 len -= sizeof(struct ifg_req); 1359 if (strcmp(ifg->ifgrq_group, "all")) { 1360 ENTRY item; 1361 ENTRY *ret_item; 1362 int *answer; 1363 1364 item.key = ifg->ifgrq_group; 1365 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1366 struct ifgroupreq ifgr2; 1367 1368 /* Don't know the answer yet */ 1369 if ((answer = malloc(sizeof(int))) == NULL) 1370 err(1, "malloc"); 1371 1372 bzero(&ifgr2, sizeof(ifgr2)); 1373 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1374 sizeof(ifgr2.ifgr_name)); 1375 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1376 *answer = ifgr2.ifgr_len; 1377 else 1378 *answer = 0; 1379 1380 item.key = strdup(ifg->ifgrq_group); 1381 item.data = answer; 1382 if (hsearch_r(item, ENTER, &ret_item, 1383 &isgroup_map) == 0) 1384 err(1, "interface group query response" 1385 " map insert"); 1386 } 1387 } 1388 } 1389 free(ifgr.ifgr_groups); 1390 } 1391 1392 void 1393 ifa_load(void) 1394 { 1395 struct ifaddrs *ifap, *ifa; 1396 struct node_host *n = NULL, *h = NULL; 1397 1398 if (getifaddrs(&ifap) < 0) 1399 err(1, "getifaddrs"); 1400 1401 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1402 if (!(ifa->ifa_addr->sa_family == AF_INET || 1403 ifa->ifa_addr->sa_family == AF_INET6 || 1404 ifa->ifa_addr->sa_family == AF_LINK)) 1405 continue; 1406 n = calloc(1, sizeof(struct node_host)); 1407 if (n == NULL) 1408 err(1, "address: calloc"); 1409 n->af = ifa->ifa_addr->sa_family; 1410 n->ifa_flags = ifa->ifa_flags; 1411 #ifdef __KAME__ 1412 if (n->af == AF_INET6 && 1413 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1414 ifa->ifa_addr)->sin6_addr) && 1415 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1416 0) { 1417 struct sockaddr_in6 *sin6; 1418 1419 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1420 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1421 sin6->sin6_addr.s6_addr[3]; 1422 sin6->sin6_addr.s6_addr[2] = 0; 1423 sin6->sin6_addr.s6_addr[3] = 0; 1424 } 1425 #endif 1426 n->ifindex = 0; 1427 if (n->af == AF_INET) { 1428 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1429 ifa->ifa_addr)->sin_addr.s_addr, 1430 sizeof(struct in_addr)); 1431 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1432 ifa->ifa_netmask)->sin_addr.s_addr, 1433 sizeof(struct in_addr)); 1434 if (ifa->ifa_broadaddr != NULL) 1435 memcpy(&n->bcast, &((struct sockaddr_in *) 1436 ifa->ifa_broadaddr)->sin_addr.s_addr, 1437 sizeof(struct in_addr)); 1438 if (ifa->ifa_dstaddr != NULL) 1439 memcpy(&n->peer, &((struct sockaddr_in *) 1440 ifa->ifa_dstaddr)->sin_addr.s_addr, 1441 sizeof(struct in_addr)); 1442 } else if (n->af == AF_INET6) { 1443 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1444 ifa->ifa_addr)->sin6_addr.s6_addr, 1445 sizeof(struct in6_addr)); 1446 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1447 ifa->ifa_netmask)->sin6_addr.s6_addr, 1448 sizeof(struct in6_addr)); 1449 if (ifa->ifa_broadaddr != NULL) 1450 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1451 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1452 sizeof(struct in6_addr)); 1453 if (ifa->ifa_dstaddr != NULL) 1454 memcpy(&n->peer, &((struct sockaddr_in6 *) 1455 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1456 sizeof(struct in6_addr)); 1457 n->ifindex = ((struct sockaddr_in6 *) 1458 ifa->ifa_addr)->sin6_scope_id; 1459 } else if (n->af == AF_LINK) { 1460 ifa_add_groups_to_map(ifa->ifa_name); 1461 } 1462 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1463 err(1, "ifa_load: strdup"); 1464 n->next = NULL; 1465 n->tail = n; 1466 if (h == NULL) 1467 h = n; 1468 else { 1469 h->tail->next = n; 1470 h->tail = n; 1471 } 1472 } 1473 1474 iftab = h; 1475 freeifaddrs(ifap); 1476 } 1477 1478 static int 1479 get_socket_domain(void) 1480 { 1481 int sdom; 1482 1483 sdom = AF_UNSPEC; 1484 #ifdef WITH_INET6 1485 if (sdom == AF_UNSPEC && feature_present("inet6")) 1486 sdom = AF_INET6; 1487 #endif 1488 #ifdef WITH_INET 1489 if (sdom == AF_UNSPEC && feature_present("inet")) 1490 sdom = AF_INET; 1491 #endif 1492 if (sdom == AF_UNSPEC) 1493 sdom = AF_LINK; 1494 1495 return (sdom); 1496 } 1497 1498 int 1499 get_query_socket(void) 1500 { 1501 static int s = -1; 1502 1503 if (s == -1) { 1504 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1505 err(1, "socket"); 1506 } 1507 1508 return (s); 1509 } 1510 1511 /* 1512 * Returns the response len if the name is a group, otherwise returns 0. 1513 */ 1514 static int 1515 is_a_group(char *name) 1516 { 1517 ENTRY item; 1518 ENTRY *ret_item; 1519 1520 item.key = name; 1521 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1522 return (0); 1523 1524 return (*(int *)ret_item->data); 1525 } 1526 1527 struct node_host * 1528 ifa_exists(char *ifa_name) 1529 { 1530 struct node_host *n; 1531 1532 if (iftab == NULL) 1533 ifa_load(); 1534 1535 /* check whether this is a group */ 1536 if (is_a_group(ifa_name)) { 1537 /* fake a node_host */ 1538 if ((n = calloc(1, sizeof(*n))) == NULL) 1539 err(1, "calloc"); 1540 if ((n->ifname = strdup(ifa_name)) == NULL) 1541 err(1, "strdup"); 1542 return (n); 1543 } 1544 1545 for (n = iftab; n; n = n->next) { 1546 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1547 return (n); 1548 } 1549 1550 return (NULL); 1551 } 1552 1553 struct node_host * 1554 ifa_grouplookup(char *ifa_name, int flags) 1555 { 1556 struct ifg_req *ifg; 1557 struct ifgroupreq ifgr; 1558 int s, len; 1559 struct node_host *n, *h = NULL; 1560 1561 s = get_query_socket(); 1562 len = is_a_group(ifa_name); 1563 if (len == 0) 1564 return (NULL); 1565 bzero(&ifgr, sizeof(ifgr)); 1566 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1567 ifgr.ifgr_len = len; 1568 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1569 err(1, "calloc"); 1570 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1571 err(1, "SIOCGIFGMEMB"); 1572 1573 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1574 ifg++) { 1575 len -= sizeof(struct ifg_req); 1576 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1577 continue; 1578 if (h == NULL) 1579 h = n; 1580 else { 1581 h->tail->next = n; 1582 h->tail = n->tail; 1583 } 1584 } 1585 free(ifgr.ifgr_groups); 1586 1587 return (h); 1588 } 1589 1590 struct node_host * 1591 ifa_lookup(char *ifa_name, int flags) 1592 { 1593 struct node_host *p = NULL, *h = NULL, *n = NULL; 1594 int got4 = 0, got6 = 0; 1595 const char *last_if = NULL; 1596 1597 /* first load iftab and isgroup_map */ 1598 if (iftab == NULL) 1599 ifa_load(); 1600 1601 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1602 return (h); 1603 1604 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1605 ifa_name = NULL; 1606 1607 for (p = iftab; p; p = p->next) { 1608 if (ifa_skip_if(ifa_name, p)) 1609 continue; 1610 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1611 continue; 1612 if ((flags & PFI_AFLAG_BROADCAST) && 1613 !(p->ifa_flags & IFF_BROADCAST)) 1614 continue; 1615 if ((flags & PFI_AFLAG_PEER) && 1616 !(p->ifa_flags & IFF_POINTOPOINT)) 1617 continue; 1618 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1619 continue; 1620 if (last_if == NULL || strcmp(last_if, p->ifname)) 1621 got4 = got6 = 0; 1622 last_if = p->ifname; 1623 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1624 continue; 1625 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1626 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1627 continue; 1628 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1629 continue; 1630 if (p->af == AF_INET) 1631 got4 = 1; 1632 else 1633 got6 = 1; 1634 n = calloc(1, sizeof(struct node_host)); 1635 if (n == NULL) 1636 err(1, "address: calloc"); 1637 n->af = p->af; 1638 if (flags & PFI_AFLAG_BROADCAST) 1639 memcpy(&n->addr.v.a.addr, &p->bcast, 1640 sizeof(struct pf_addr)); 1641 else if (flags & PFI_AFLAG_PEER) 1642 memcpy(&n->addr.v.a.addr, &p->peer, 1643 sizeof(struct pf_addr)); 1644 else 1645 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1646 sizeof(struct pf_addr)); 1647 if (flags & PFI_AFLAG_NETWORK) 1648 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1649 else { 1650 if (n->af == AF_INET) { 1651 if (p->ifa_flags & IFF_LOOPBACK && 1652 p->ifa_flags & IFF_LINK1) 1653 memcpy(&n->addr.v.a.mask, 1654 &p->addr.v.a.mask, 1655 sizeof(struct pf_addr)); 1656 else 1657 set_ipmask(n, 32); 1658 } else 1659 set_ipmask(n, 128); 1660 } 1661 n->ifindex = p->ifindex; 1662 n->ifname = strdup(p->ifname); 1663 1664 n->next = NULL; 1665 n->tail = n; 1666 if (h == NULL) 1667 h = n; 1668 else { 1669 h->tail->next = n; 1670 h->tail = n; 1671 } 1672 } 1673 return (h); 1674 } 1675 1676 int 1677 ifa_skip_if(const char *filter, struct node_host *p) 1678 { 1679 int n; 1680 1681 if (p->af != AF_INET && p->af != AF_INET6) 1682 return (1); 1683 if (filter == NULL || !*filter) 1684 return (0); 1685 if (!strcmp(p->ifname, filter)) 1686 return (0); /* exact match */ 1687 n = strlen(filter); 1688 if (n < 1 || n >= IFNAMSIZ) 1689 return (1); /* sanity check */ 1690 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1691 return (1); /* only do exact match in that case */ 1692 if (strncmp(p->ifname, filter, n)) 1693 return (1); /* prefix doesn't match */ 1694 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1695 } 1696 1697 1698 struct node_host * 1699 host(const char *s) 1700 { 1701 struct node_host *h = NULL; 1702 int mask, v4mask, v6mask, cont = 1; 1703 char *p, *q, *ps; 1704 1705 if ((p = strrchr(s, '/')) != NULL) { 1706 mask = strtol(p+1, &q, 0); 1707 if (!q || *q || mask > 128 || q == (p+1)) { 1708 fprintf(stderr, "invalid netmask '%s'\n", p); 1709 return (NULL); 1710 } 1711 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1712 err(1, "host: malloc"); 1713 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1714 v4mask = v6mask = mask; 1715 } else { 1716 if ((ps = strdup(s)) == NULL) 1717 err(1, "host: strdup"); 1718 v4mask = 32; 1719 v6mask = 128; 1720 mask = -1; 1721 } 1722 1723 /* IPv4 address? */ 1724 if (cont && (h = host_v4(s, mask)) != NULL) 1725 cont = 0; 1726 1727 /* IPv6 address? */ 1728 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1729 cont = 0; 1730 1731 /* interface with this name exists? */ 1732 /* expensive with thousands of interfaces - prioritze IPv4/6 check */ 1733 if (cont && (h = host_if(ps, mask, &cont)) != NULL) 1734 cont = 0; 1735 1736 /* dns lookup */ 1737 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1738 cont = 0; 1739 free(ps); 1740 1741 if (h == NULL || cont == 1) { 1742 fprintf(stderr, "no IP address found for %s\n", s); 1743 return (NULL); 1744 } 1745 return (h); 1746 } 1747 1748 struct node_host * 1749 host_if(const char *s, int mask, int *cont) 1750 { 1751 struct node_host *n, *h = NULL; 1752 char *p, *ps; 1753 int flags = 0; 1754 1755 if ((ps = strdup(s)) == NULL) 1756 err(1, "host_if: strdup"); 1757 while ((p = strrchr(ps, ':')) != NULL) { 1758 if (!strcmp(p+1, "network")) 1759 flags |= PFI_AFLAG_NETWORK; 1760 else if (!strcmp(p+1, "broadcast")) 1761 flags |= PFI_AFLAG_BROADCAST; 1762 else if (!strcmp(p+1, "peer")) 1763 flags |= PFI_AFLAG_PEER; 1764 else if (!strcmp(p+1, "0")) 1765 flags |= PFI_AFLAG_NOALIAS; 1766 else { 1767 free(ps); 1768 return (NULL); 1769 } 1770 *p = '\0'; 1771 *cont = 0; 1772 } 1773 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1774 fprintf(stderr, "illegal combination of interface modifiers\n"); 1775 free(ps); 1776 return (NULL); 1777 } 1778 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1779 fprintf(stderr, "network or broadcast lookup, but " 1780 "extra netmask given\n"); 1781 free(ps); 1782 return (NULL); 1783 } 1784 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1785 /* interface with this name exists */ 1786 h = ifa_lookup(ps, flags); 1787 for (n = h; n != NULL && mask > -1; n = n->next) 1788 set_ipmask(n, mask); 1789 } 1790 1791 free(ps); 1792 return (h); 1793 } 1794 1795 struct node_host * 1796 host_v4(const char *s, int mask) 1797 { 1798 struct node_host *h = NULL; 1799 struct in_addr ina; 1800 int bits = 32; 1801 1802 memset(&ina, 0, sizeof(struct in_addr)); 1803 if (strrchr(s, '/') != NULL) { 1804 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1805 return (NULL); 1806 } else { 1807 if (inet_pton(AF_INET, s, &ina) != 1) 1808 return (NULL); 1809 } 1810 1811 h = calloc(1, sizeof(struct node_host)); 1812 if (h == NULL) 1813 err(1, "address: calloc"); 1814 h->ifname = NULL; 1815 h->af = AF_INET; 1816 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1817 set_ipmask(h, bits); 1818 h->next = NULL; 1819 h->tail = h; 1820 1821 return (h); 1822 } 1823 1824 struct node_host * 1825 host_v6(const char *s, int mask) 1826 { 1827 struct addrinfo hints, *res; 1828 struct node_host *h = NULL; 1829 1830 memset(&hints, 0, sizeof(hints)); 1831 hints.ai_family = AF_INET6; 1832 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1833 hints.ai_flags = AI_NUMERICHOST; 1834 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1835 h = calloc(1, sizeof(struct node_host)); 1836 if (h == NULL) 1837 err(1, "address: calloc"); 1838 h->ifname = NULL; 1839 h->af = AF_INET6; 1840 memcpy(&h->addr.v.a.addr, 1841 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1842 sizeof(h->addr.v.a.addr)); 1843 h->ifindex = 1844 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1845 set_ipmask(h, mask); 1846 freeaddrinfo(res); 1847 h->next = NULL; 1848 h->tail = h; 1849 } 1850 1851 return (h); 1852 } 1853 1854 struct node_host * 1855 host_dns(const char *s, int v4mask, int v6mask) 1856 { 1857 struct addrinfo hints, *res0, *res; 1858 struct node_host *n, *h = NULL; 1859 int error, noalias = 0; 1860 int got4 = 0, got6 = 0; 1861 char *p, *ps; 1862 1863 if ((ps = strdup(s)) == NULL) 1864 err(1, "host_dns: strdup"); 1865 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1866 noalias = 1; 1867 *p = '\0'; 1868 } 1869 memset(&hints, 0, sizeof(hints)); 1870 hints.ai_family = PF_UNSPEC; 1871 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1872 error = getaddrinfo(ps, NULL, &hints, &res0); 1873 if (error) { 1874 free(ps); 1875 return (h); 1876 } 1877 1878 for (res = res0; res; res = res->ai_next) { 1879 if (res->ai_family != AF_INET && 1880 res->ai_family != AF_INET6) 1881 continue; 1882 if (noalias) { 1883 if (res->ai_family == AF_INET) { 1884 if (got4) 1885 continue; 1886 got4 = 1; 1887 } else { 1888 if (got6) 1889 continue; 1890 got6 = 1; 1891 } 1892 } 1893 n = calloc(1, sizeof(struct node_host)); 1894 if (n == NULL) 1895 err(1, "host_dns: calloc"); 1896 n->ifname = NULL; 1897 n->af = res->ai_family; 1898 if (res->ai_family == AF_INET) { 1899 memcpy(&n->addr.v.a.addr, 1900 &((struct sockaddr_in *) 1901 res->ai_addr)->sin_addr.s_addr, 1902 sizeof(struct in_addr)); 1903 set_ipmask(n, v4mask); 1904 } else { 1905 memcpy(&n->addr.v.a.addr, 1906 &((struct sockaddr_in6 *) 1907 res->ai_addr)->sin6_addr.s6_addr, 1908 sizeof(struct in6_addr)); 1909 n->ifindex = 1910 ((struct sockaddr_in6 *) 1911 res->ai_addr)->sin6_scope_id; 1912 set_ipmask(n, v6mask); 1913 } 1914 n->next = NULL; 1915 n->tail = n; 1916 if (h == NULL) 1917 h = n; 1918 else { 1919 h->tail->next = n; 1920 h->tail = n; 1921 } 1922 } 1923 freeaddrinfo(res0); 1924 free(ps); 1925 1926 return (h); 1927 } 1928 1929 /* 1930 * convert a hostname to a list of addresses and put them in the given buffer. 1931 * test: 1932 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1933 */ 1934 int 1935 append_addr(struct pfr_buffer *b, char *s, int test) 1936 { 1937 char *r; 1938 struct node_host *h, *n; 1939 int rv, not = 0; 1940 1941 for (r = s; *r == '!'; r++) 1942 not = !not; 1943 if ((n = host(r)) == NULL) { 1944 errno = 0; 1945 return (-1); 1946 } 1947 rv = append_addr_host(b, n, test, not); 1948 do { 1949 h = n; 1950 n = n->next; 1951 free(h); 1952 } while (n != NULL); 1953 return (rv); 1954 } 1955 1956 /* 1957 * same as previous function, but with a pre-parsed input and the ability 1958 * to "negate" the result. Does not free the node_host list. 1959 * not: 1960 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1961 */ 1962 int 1963 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1964 { 1965 int bits; 1966 struct pfr_addr addr; 1967 1968 do { 1969 bzero(&addr, sizeof(addr)); 1970 addr.pfra_not = n->not ^ not; 1971 addr.pfra_af = n->af; 1972 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1973 switch (n->af) { 1974 case AF_INET: 1975 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1976 bits = 32; 1977 break; 1978 case AF_INET6: 1979 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1980 sizeof(struct in6_addr)); 1981 bits = 128; 1982 break; 1983 default: 1984 errno = EINVAL; 1985 return (-1); 1986 } 1987 if ((test && (not || addr.pfra_net != bits)) || 1988 addr.pfra_net > bits) { 1989 errno = EINVAL; 1990 return (-1); 1991 } 1992 if (pfr_buf_add(b, &addr)) 1993 return (-1); 1994 } while ((n = n->next) != NULL); 1995 1996 return (0); 1997 } 1998 1999 int 2000 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 2001 { 2002 struct pfioc_trans_e trans; 2003 2004 bzero(&trans, sizeof(trans)); 2005 trans.rs_num = rs_num; 2006 if (strlcpy(trans.anchor, anchor, 2007 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 2008 errx(1, "pfctl_add_trans: strlcpy"); 2009 2010 return pfr_buf_add(buf, &trans); 2011 } 2012 2013 u_int32_t 2014 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 2015 { 2016 struct pfioc_trans_e *p; 2017 2018 PFRB_FOREACH(p, buf) 2019 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 2020 return (p->ticket); 2021 errx(1, "pfctl_get_ticket: assertion failed"); 2022 } 2023 2024 int 2025 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 2026 { 2027 struct pfioc_trans trans; 2028 2029 bzero(&trans, sizeof(trans)); 2030 trans.size = buf->pfrb_size - from; 2031 trans.esize = sizeof(struct pfioc_trans_e); 2032 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 2033 return ioctl(dev, cmd, &trans); 2034 } 2035