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