1 /* $OpenBSD: pfctl_parser.c,v 1.240 2008/06/10 20:55:02 mcbride Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c) 2001 Daniel Hartmeier 7 * Copyright (c) 2002,2003 Henning Brauer 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 14 * - Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * - Redistributions in binary form must reproduce the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer in the documentation and/or other materials provided 19 * with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 * 34 */ 35 36 #include <sys/types.h> 37 #include <sys/ioctl.h> 38 #include <sys/socket.h> 39 #include <sys/param.h> 40 #include <sys/proc.h> 41 #include <net/if.h> 42 #include <netinet/in.h> 43 #include <netinet/in_systm.h> 44 #include <netinet/ip.h> 45 #include <netinet/ip_icmp.h> 46 #include <netinet/icmp6.h> 47 #include <net/pfvar.h> 48 #include <arpa/inet.h> 49 50 #include <assert.h> 51 #include <search.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <ctype.h> 56 #include <netdb.h> 57 #include <stdarg.h> 58 #include <errno.h> 59 #include <err.h> 60 #include <ifaddrs.h> 61 #include <unistd.h> 62 63 #include "pfctl_parser.h" 64 #include "pfctl.h" 65 66 void print_op (u_int8_t, const char *, const char *); 67 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int); 68 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned); 69 void print_flags (u_int8_t); 70 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 71 struct pf_rule_addr *, sa_family_t, u_int8_t, int, int); 72 int ifa_skip_if(const char *filter, struct node_host *p); 73 74 struct node_host *host_if(const char *, int, int *); 75 struct node_host *host_v4(const char *, int); 76 struct node_host *host_v6(const char *, int); 77 struct node_host *host_dns(const char *, int, int); 78 79 const char * const tcpflags = "FSRPAUEW"; 80 81 static const struct icmptypeent icmp_type[] = { 82 { "echoreq", ICMP_ECHO }, 83 { "echorep", ICMP_ECHOREPLY }, 84 { "unreach", ICMP_UNREACH }, 85 { "squench", ICMP_SOURCEQUENCH }, 86 { "redir", ICMP_REDIRECT }, 87 { "althost", ICMP_ALTHOSTADDR }, 88 { "routeradv", ICMP_ROUTERADVERT }, 89 { "routersol", ICMP_ROUTERSOLICIT }, 90 { "timex", ICMP_TIMXCEED }, 91 { "paramprob", ICMP_PARAMPROB }, 92 { "timereq", ICMP_TSTAMP }, 93 { "timerep", ICMP_TSTAMPREPLY }, 94 { "inforeq", ICMP_IREQ }, 95 { "inforep", ICMP_IREQREPLY }, 96 { "maskreq", ICMP_MASKREQ }, 97 { "maskrep", ICMP_MASKREPLY }, 98 { "trace", ICMP_TRACEROUTE }, 99 { "dataconv", ICMP_DATACONVERR }, 100 { "mobredir", ICMP_MOBILE_REDIRECT }, 101 { "ipv6-where", ICMP_IPV6_WHEREAREYOU }, 102 { "ipv6-here", ICMP_IPV6_IAMHERE }, 103 { "mobregreq", ICMP_MOBILE_REGREQUEST }, 104 { "mobregrep", ICMP_MOBILE_REGREPLY }, 105 { "skip", ICMP_SKIP }, 106 { "photuris", ICMP_PHOTURIS } 107 }; 108 109 static const struct icmptypeent icmp6_type[] = { 110 { "unreach", ICMP6_DST_UNREACH }, 111 { "toobig", ICMP6_PACKET_TOO_BIG }, 112 { "timex", ICMP6_TIME_EXCEEDED }, 113 { "paramprob", ICMP6_PARAM_PROB }, 114 { "echoreq", ICMP6_ECHO_REQUEST }, 115 { "echorep", ICMP6_ECHO_REPLY }, 116 { "groupqry", ICMP6_MEMBERSHIP_QUERY }, 117 { "listqry", MLD_LISTENER_QUERY }, 118 { "grouprep", ICMP6_MEMBERSHIP_REPORT }, 119 { "listenrep", MLD_LISTENER_REPORT }, 120 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION }, 121 { "listendone", MLD_LISTENER_DONE }, 122 { "routersol", ND_ROUTER_SOLICIT }, 123 { "routeradv", ND_ROUTER_ADVERT }, 124 { "neighbrsol", ND_NEIGHBOR_SOLICIT }, 125 { "neighbradv", ND_NEIGHBOR_ADVERT }, 126 { "redir", ND_REDIRECT }, 127 { "routrrenum", ICMP6_ROUTER_RENUMBERING }, 128 { "wrureq", ICMP6_WRUREQUEST }, 129 { "wrurep", ICMP6_WRUREPLY }, 130 { "fqdnreq", ICMP6_FQDN_QUERY }, 131 { "fqdnrep", ICMP6_FQDN_REPLY }, 132 { "niqry", ICMP6_NI_QUERY }, 133 { "nirep", ICMP6_NI_REPLY }, 134 { "mtraceresp", MLD_MTRACE_RESP }, 135 { "mtrace", MLD_MTRACE } 136 }; 137 138 static const struct icmpcodeent icmp_code[] = { 139 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET }, 140 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST }, 141 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL }, 142 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT }, 143 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG }, 144 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL }, 145 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN }, 146 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN }, 147 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED }, 148 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB }, 149 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB }, 150 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET }, 151 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST }, 152 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB }, 153 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE }, 154 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF }, 155 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET }, 156 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST }, 157 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET }, 158 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST }, 159 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL }, 160 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON }, 161 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS }, 162 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS }, 163 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR }, 164 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT }, 165 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH }, 166 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX }, 167 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED }, 168 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED } 169 }; 170 171 static const struct icmpcodeent icmp6_code[] = { 172 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN }, 173 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE }, 174 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR }, 175 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE }, 176 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR }, 177 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT }, 178 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT }, 179 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY }, 180 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER }, 181 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER }, 182 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK }, 183 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER } 184 }; 185 186 const struct pf_timeout pf_timeouts[] = { 187 { "tcp.first", PFTM_TCP_FIRST_PACKET }, 188 { "tcp.opening", PFTM_TCP_OPENING }, 189 { "tcp.established", PFTM_TCP_ESTABLISHED }, 190 { "tcp.closing", PFTM_TCP_CLOSING }, 191 { "tcp.finwait", PFTM_TCP_FIN_WAIT }, 192 { "tcp.closed", PFTM_TCP_CLOSED }, 193 { "tcp.tsdiff", PFTM_TS_DIFF }, 194 { "sctp.first", PFTM_SCTP_FIRST_PACKET }, 195 { "sctp.opening", PFTM_SCTP_OPENING }, 196 { "sctp.established", PFTM_SCTP_ESTABLISHED }, 197 { "sctp.closing", PFTM_SCTP_CLOSING }, 198 { "sctp.closed", PFTM_SCTP_CLOSED }, 199 { "udp.first", PFTM_UDP_FIRST_PACKET }, 200 { "udp.single", PFTM_UDP_SINGLE }, 201 { "udp.multiple", PFTM_UDP_MULTIPLE }, 202 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 203 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 204 { "other.first", PFTM_OTHER_FIRST_PACKET }, 205 { "other.single", PFTM_OTHER_SINGLE }, 206 { "other.multiple", PFTM_OTHER_MULTIPLE }, 207 { "frag", PFTM_FRAG }, 208 { "interval", PFTM_INTERVAL }, 209 { "adaptive.start", PFTM_ADAPTIVE_START }, 210 { "adaptive.end", PFTM_ADAPTIVE_END }, 211 { "src.track", PFTM_SRC_NODE }, 212 { NULL, 0 } 213 }; 214 215 static struct hsearch_data isgroup_map; 216 217 static __attribute__((constructor)) void 218 pfctl_parser_init(void) 219 { 220 /* 221 * As hdestroy() will never be called on these tables, it will be 222 * safe to use references into the stored data as keys. 223 */ 224 if (hcreate_r(0, &isgroup_map) == 0) 225 err(1, "Failed to create interface group query response map"); 226 } 227 228 const struct icmptypeent * 229 geticmptypebynumber(u_int8_t type, sa_family_t af) 230 { 231 unsigned int i; 232 233 if (af != AF_INET6) { 234 for (i=0; i < nitems(icmp_type); i++) { 235 if (type == icmp_type[i].type) 236 return (&icmp_type[i]); 237 } 238 } else { 239 for (i=0; i < nitems(icmp6_type); i++) { 240 if (type == icmp6_type[i].type) 241 return (&icmp6_type[i]); 242 } 243 } 244 return (NULL); 245 } 246 247 const struct icmptypeent * 248 geticmptypebyname(char *w, sa_family_t af) 249 { 250 unsigned int i; 251 252 if (af != AF_INET6) { 253 for (i=0; i < nitems(icmp_type); i++) { 254 if (!strcmp(w, icmp_type[i].name)) 255 return (&icmp_type[i]); 256 } 257 } else { 258 for (i=0; i < nitems(icmp6_type); i++) { 259 if (!strcmp(w, icmp6_type[i].name)) 260 return (&icmp6_type[i]); 261 } 262 } 263 return (NULL); 264 } 265 266 const struct icmpcodeent * 267 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 268 { 269 unsigned int i; 270 271 if (af != AF_INET6) { 272 for (i=0; i < nitems(icmp_code); i++) { 273 if (type == icmp_code[i].type && 274 code == icmp_code[i].code) 275 return (&icmp_code[i]); 276 } 277 } else { 278 for (i=0; i < nitems(icmp6_code); i++) { 279 if (type == icmp6_code[i].type && 280 code == icmp6_code[i].code) 281 return (&icmp6_code[i]); 282 } 283 } 284 return (NULL); 285 } 286 287 const struct icmpcodeent * 288 geticmpcodebyname(u_long type, char *w, sa_family_t af) 289 { 290 unsigned int i; 291 292 if (af != AF_INET6) { 293 for (i=0; i < nitems(icmp_code); i++) { 294 if (type == icmp_code[i].type && 295 !strcmp(w, icmp_code[i].name)) 296 return (&icmp_code[i]); 297 } 298 } else { 299 for (i=0; i < nitems(icmp6_code); i++) { 300 if (type == icmp6_code[i].type && 301 !strcmp(w, icmp6_code[i].name)) 302 return (&icmp6_code[i]); 303 } 304 } 305 return (NULL); 306 } 307 308 void 309 print_op(u_int8_t op, const char *a1, const char *a2) 310 { 311 if (op == PF_OP_IRG) 312 printf(" %s >< %s", a1, a2); 313 else if (op == PF_OP_XRG) 314 printf(" %s <> %s", a1, a2); 315 else if (op == PF_OP_EQ) 316 printf(" = %s", a1); 317 else if (op == PF_OP_NE) 318 printf(" != %s", a1); 319 else if (op == PF_OP_LT) 320 printf(" < %s", a1); 321 else if (op == PF_OP_LE) 322 printf(" <= %s", a1); 323 else if (op == PF_OP_GT) 324 printf(" > %s", a1); 325 else if (op == PF_OP_GE) 326 printf(" >= %s", a1); 327 else if (op == PF_OP_RRG) 328 printf(" %s:%s", a1, a2); 329 } 330 331 void 332 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric) 333 { 334 char a1[6], a2[6]; 335 struct servent *s; 336 337 if (!numeric) 338 s = getservbyport(p1, proto); 339 else 340 s = NULL; 341 p1 = ntohs(p1); 342 p2 = ntohs(p2); 343 snprintf(a1, sizeof(a1), "%u", p1); 344 snprintf(a2, sizeof(a2), "%u", p2); 345 printf(" port"); 346 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 347 print_op(op, s->s_name, a2); 348 else 349 print_op(op, a1, a2); 350 } 351 352 void 353 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 354 { 355 char a1[11], a2[11]; 356 357 snprintf(a1, sizeof(a1), "%u", u1); 358 snprintf(a2, sizeof(a2), "%u", u2); 359 printf(" %s", t); 360 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 361 print_op(op, "unknown", a2); 362 else 363 print_op(op, a1, a2); 364 } 365 366 void 367 print_flags(u_int8_t f) 368 { 369 int i; 370 371 for (i = 0; tcpflags[i]; ++i) 372 if (f & (1 << i)) 373 printf("%c", tcpflags[i]); 374 } 375 376 void 377 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 378 sa_family_t af, u_int8_t proto, int verbose, int numeric) 379 { 380 char buf[PF_OSFP_LEN*3]; 381 if (src->addr.type == PF_ADDR_ADDRMASK && 382 dst->addr.type == PF_ADDR_ADDRMASK && 383 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 384 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 385 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 386 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 387 !src->neg && !dst->neg && 388 !src->port_op && !dst->port_op && 389 osfp == PF_OSFP_ANY) 390 printf(" all"); 391 else { 392 printf(" from "); 393 if (src->neg) 394 printf("! "); 395 print_addr(&src->addr, af, verbose); 396 if (src->port_op) 397 print_port(src->port_op, src->port[0], 398 src->port[1], 399 proto == IPPROTO_TCP ? "tcp" : "udp", 400 numeric); 401 if (osfp != PF_OSFP_ANY) 402 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 403 sizeof(buf))); 404 405 printf(" to "); 406 if (dst->neg) 407 printf("! "); 408 print_addr(&dst->addr, af, verbose); 409 if (dst->port_op) 410 print_port(dst->port_op, dst->port[0], 411 dst->port[1], 412 proto == IPPROTO_TCP ? "tcp" : "udp", 413 numeric); 414 } 415 } 416 417 void 418 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2, 419 sa_family_t af, int id) 420 { 421 struct pf_pooladdr *pooladdr; 422 423 if ((TAILQ_FIRST(&pool->list) != NULL) && 424 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 425 printf("{ "); 426 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 427 switch (id) { 428 case PF_NAT: 429 case PF_RDR: 430 case PF_BINAT: 431 print_addr(&pooladdr->addr, af, 0); 432 break; 433 case PF_PASS: 434 case PF_MATCH: 435 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 436 printf("%s", pooladdr->ifname); 437 else { 438 printf("(%s ", pooladdr->ifname); 439 print_addr(&pooladdr->addr, af, 0); 440 printf(")"); 441 } 442 break; 443 default: 444 break; 445 } 446 if (TAILQ_NEXT(pooladdr, entries) != NULL) 447 printf(", "); 448 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 449 printf(" }"); 450 } 451 switch (id) { 452 case PF_NAT: 453 if ((p1 != PF_NAT_PROXY_PORT_LOW || 454 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 455 if (p1 == p2) 456 printf(" port %u", p1); 457 else 458 printf(" port %u:%u", p1, p2); 459 } 460 break; 461 case PF_RDR: 462 if (p1) { 463 printf(" port %u", p1); 464 if (p2 && (p2 != p1)) 465 printf(":%u", p2); 466 } 467 break; 468 default: 469 break; 470 } 471 switch (pool->opts & PF_POOL_TYPEMASK) { 472 case PF_POOL_NONE: 473 break; 474 case PF_POOL_BITMASK: 475 printf(" bitmask"); 476 break; 477 case PF_POOL_RANDOM: 478 printf(" random"); 479 break; 480 case PF_POOL_SRCHASH: 481 printf(" source-hash 0x%08x%08x%08x%08x", 482 pool->key.key32[0], pool->key.key32[1], 483 pool->key.key32[2], pool->key.key32[3]); 484 break; 485 case PF_POOL_ROUNDROBIN: 486 printf(" round-robin"); 487 break; 488 } 489 if (pool->opts & PF_POOL_STICKYADDR) 490 printf(" sticky-address"); 491 if (id == PF_NAT && p1 == 0 && p2 == 0) 492 printf(" static-port"); 493 if (pool->mape.offset > 0) 494 printf(" map-e-portset %u/%u/%u", 495 pool->mape.offset, pool->mape.psidlen, pool->mape.psid); 496 } 497 498 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 499 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 500 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 501 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 502 503 void 504 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts) 505 { 506 struct pfctl_status_counter *c; 507 char statline[80], *running; 508 time_t runtime; 509 int i; 510 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 511 static const char hex[] = "0123456789abcdef"; 512 513 runtime = time(NULL) - s->since; 514 running = s->running ? "Enabled" : "Disabled"; 515 516 if (s->since) { 517 unsigned int sec, min, hrs, day = runtime; 518 519 sec = day % 60; 520 day /= 60; 521 min = day % 60; 522 day /= 60; 523 hrs = day % 24; 524 day /= 24; 525 snprintf(statline, sizeof(statline), 526 "Status: %s for %u days %.2u:%.2u:%.2u", 527 running, day, hrs, min, sec); 528 } else 529 snprintf(statline, sizeof(statline), "Status: %s", running); 530 printf("%-44s", statline); 531 switch (s->debug) { 532 case PF_DEBUG_NONE: 533 printf("%15s\n\n", "Debug: None"); 534 break; 535 case PF_DEBUG_URGENT: 536 printf("%15s\n\n", "Debug: Urgent"); 537 break; 538 case PF_DEBUG_MISC: 539 printf("%15s\n\n", "Debug: Misc"); 540 break; 541 case PF_DEBUG_NOISY: 542 printf("%15s\n\n", "Debug: Loud"); 543 break; 544 } 545 546 if (opts & PF_OPT_VERBOSE) { 547 printf("Hostid: 0x%08x\n", s->hostid); 548 549 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 550 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 551 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 552 } 553 buf[i + i] = '\0'; 554 printf("Checksum: 0x%s\n\n", buf); 555 } 556 557 if (s->ifname[0] != 0) { 558 printf("Interface Stats for %-16s %5s %16s\n", 559 s->ifname, "IPv4", "IPv6"); 560 printf(" %-25s %14llu %16llu\n", "Bytes In", 561 (unsigned long long)s->bcounters[0][0], 562 (unsigned long long)s->bcounters[1][0]); 563 printf(" %-25s %14llu %16llu\n", "Bytes Out", 564 (unsigned long long)s->bcounters[0][1], 565 (unsigned long long)s->bcounters[1][1]); 566 printf(" Packets In\n"); 567 printf(" %-23s %14llu %16llu\n", "Passed", 568 (unsigned long long)s->pcounters[0][0][PF_PASS], 569 (unsigned long long)s->pcounters[1][0][PF_PASS]); 570 printf(" %-23s %14llu %16llu\n", "Blocked", 571 (unsigned long long)s->pcounters[0][0][PF_DROP], 572 (unsigned long long)s->pcounters[1][0][PF_DROP]); 573 printf(" Packets Out\n"); 574 printf(" %-23s %14llu %16llu\n", "Passed", 575 (unsigned long long)s->pcounters[0][1][PF_PASS], 576 (unsigned long long)s->pcounters[1][1][PF_PASS]); 577 printf(" %-23s %14llu %16llu\n\n", "Blocked", 578 (unsigned long long)s->pcounters[0][1][PF_DROP], 579 (unsigned long long)s->pcounters[1][1][PF_DROP]); 580 } 581 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 582 printf(" %-25s %14ju %14s\n", "current entries", s->states, ""); 583 TAILQ_FOREACH(c, &s->fcounters, entry) { 584 printf(" %-25s %14ju ", c->name, c->counter); 585 if (runtime > 0) 586 printf("%14.1f/s\n", 587 (double)c->counter / (double)runtime); 588 else 589 printf("%14s\n", ""); 590 } 591 if (opts & PF_OPT_VERBOSE) { 592 printf("Source Tracking Table\n"); 593 printf(" %-25s %14ju %14s\n", "current entries", 594 s->src_nodes, ""); 595 TAILQ_FOREACH(c, &s->scounters, entry) { 596 printf(" %-25s %14ju ", c->name, c->counter); 597 if (runtime > 0) 598 printf("%14.1f/s\n", 599 (double)c->counter / (double)runtime); 600 else 601 printf("%14s\n", ""); 602 } 603 } 604 printf("Counters\n"); 605 TAILQ_FOREACH(c, &s->counters, entry) { 606 printf(" %-25s %14ju ", c->name, c->counter); 607 if (runtime > 0) 608 printf("%14.1f/s\n", 609 (double)c->counter / (double)runtime); 610 else 611 printf("%14s\n", ""); 612 } 613 if (opts & PF_OPT_VERBOSE) { 614 printf("Limit Counters\n"); 615 TAILQ_FOREACH(c, &s->lcounters, entry) { 616 printf(" %-25s %14ju ", c->name, c->counter); 617 if (runtime > 0) 618 printf("%14.1f/s\n", 619 (double)c->counter / (double)runtime); 620 else 621 printf("%14s\n", ""); 622 } 623 624 printf("Syncookies\n"); 625 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE); 626 printf(" %-25s %s\n", "mode", 627 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]); 628 printf(" %-25s %s\n", "active", 629 s->syncookies_active ? "active" : "inactive"); 630 if (opts & PF_OPT_VERBOSE2) { 631 printf(" %-25s %d %%\n", "highwater", cookies->highwater); 632 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater); 633 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states); 634 } 635 printf("Reassemble %24s %s\n", 636 s->reass & PF_REASS_ENABLED ? "yes" : "no", 637 s->reass & PF_REASS_NODF ? "no-df" : "" 638 ); 639 } 640 } 641 642 void 643 print_running(struct pfctl_status *status) 644 { 645 printf("%s\n", status->running ? "Enabled" : "Disabled"); 646 } 647 648 void 649 print_src_node(struct pf_src_node *sn, int opts) 650 { 651 struct pf_addr_wrap aw; 652 int min, sec; 653 654 memset(&aw, 0, sizeof(aw)); 655 if (sn->af == AF_INET) 656 aw.v.a.mask.addr32[0] = 0xffffffff; 657 else 658 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 659 660 aw.v.a.addr = sn->addr; 661 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 662 printf(" -> "); 663 aw.v.a.addr = sn->raddr; 664 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 665 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 666 sn->conn, sn->conn_rate.count / 1000, 667 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 668 if (opts & PF_OPT_VERBOSE) { 669 sec = sn->creation % 60; 670 sn->creation /= 60; 671 min = sn->creation % 60; 672 sn->creation /= 60; 673 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 674 if (sn->states == 0) { 675 sec = sn->expire % 60; 676 sn->expire /= 60; 677 min = sn->expire % 60; 678 sn->expire /= 60; 679 printf(", expires in %.2u:%.2u:%.2u", 680 sn->expire, min, sec); 681 } 682 printf(", %llu pkts, %llu bytes", 683 #ifdef __FreeBSD__ 684 (unsigned long long)(sn->packets[0] + sn->packets[1]), 685 (unsigned long long)(sn->bytes[0] + sn->bytes[1])); 686 #else 687 sn->packets[0] + sn->packets[1], 688 sn->bytes[0] + sn->bytes[1]); 689 #endif 690 switch (sn->ruletype) { 691 case PF_NAT: 692 if (sn->rule.nr != -1) 693 printf(", nat rule %u", sn->rule.nr); 694 break; 695 case PF_RDR: 696 if (sn->rule.nr != -1) 697 printf(", rdr rule %u", sn->rule.nr); 698 break; 699 case PF_PASS: 700 case PF_MATCH: 701 if (sn->rule.nr != -1) 702 printf(", filter rule %u", sn->rule.nr); 703 break; 704 } 705 printf("\n"); 706 } 707 } 708 709 static void 710 print_eth_addr(const struct pfctl_eth_addr *a) 711 { 712 int i, masklen = ETHER_ADDR_LEN * 8; 713 bool seen_unset = false; 714 715 for (i = 0; i < ETHER_ADDR_LEN; i++) { 716 if (a->addr[i] != 0) 717 break; 718 } 719 720 /* Unset, so don't print anything. */ 721 if (i == ETHER_ADDR_LEN) 722 return; 723 724 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "", 725 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4], 726 a->addr[5]); 727 728 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) { 729 bool isset = a->mask[i / 8] & (1 << i % 8); 730 731 if (! seen_unset) { 732 if (isset) 733 continue; 734 seen_unset = true; 735 masklen = i; 736 } else { 737 /* Not actually a continuous mask, so print the whole 738 * thing. */ 739 if (isset) 740 break; 741 continue; 742 } 743 } 744 745 if (masklen == (ETHER_ADDR_LEN * 8)) 746 return; 747 748 if (i == (ETHER_ADDR_LEN * 8)) { 749 printf("/%d", masklen); 750 return; 751 } 752 753 printf("&%02x:%02x:%02x:%02x:%02x:%02x", 754 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4], 755 a->mask[5]); 756 } 757 758 void 759 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call, 760 int rule_numbers) 761 { 762 static const char *actiontypes[] = { "pass", "block", "", "", "", "", 763 "", "", "", "", "", "", "match" }; 764 765 int i; 766 767 if (rule_numbers) 768 printf("@%u ", r->nr); 769 770 printf("ether "); 771 if (anchor_call[0]) { 772 if (anchor_call[0] == '_') { 773 printf("anchor"); 774 } else 775 printf("anchor \"%s\"", anchor_call); 776 } else { 777 printf("%s", actiontypes[r->action]); 778 } 779 if (r->direction == PF_IN) 780 printf(" in"); 781 else if (r->direction == PF_OUT) 782 printf(" out"); 783 784 if (r->quick) 785 printf(" quick"); 786 if (r->ifname[0]) { 787 if (r->ifnot) 788 printf(" on ! %s", r->ifname); 789 else 790 printf(" on %s", r->ifname); 791 } 792 if (r->bridge_to[0]) 793 printf(" bridge-to %s", r->bridge_to); 794 if (r->proto) 795 printf(" proto 0x%04x", r->proto); 796 797 if (r->src.isset) { 798 printf(" from "); 799 print_eth_addr(&r->src); 800 } 801 if (r->dst.isset) { 802 printf(" to "); 803 print_eth_addr(&r->dst); 804 } 805 printf(" l3"); 806 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst, 807 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0, 808 0, 0); 809 810 i = 0; 811 while (r->label[i][0]) 812 printf(" label \"%s\"", r->label[i++]); 813 if (r->ridentifier) 814 printf(" ridentifier %u", r->ridentifier); 815 816 if (r->qname[0]) 817 printf(" queue %s", r->qname); 818 if (r->tagname[0]) 819 printf(" tag %s", r->tagname); 820 if (r->match_tagname[0]) { 821 if (r->match_tag_not) 822 printf(" !"); 823 printf(" tagged %s", r->match_tagname); 824 } 825 if (r->dnpipe) 826 printf(" %s %d", 827 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 828 r->dnpipe); 829 } 830 831 void 832 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric) 833 { 834 static const char *actiontypes[] = { "pass", "block", "scrub", 835 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr", 836 "", "", "match"}; 837 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 838 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 839 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 840 int i, opts; 841 char *p; 842 843 if (verbose) 844 printf("@%d ", r->nr); 845 if (r->action == PF_MATCH) 846 printf("match"); 847 else if (r->action > PF_NORDR) 848 printf("action(%d)", r->action); 849 else if (anchor_call[0]) { 850 p = strrchr(anchor_call, '/'); 851 if (p ? p[1] == '_' : anchor_call[0] == '_') 852 printf("%s", anchortypes[r->action]); 853 else 854 printf("%s \"%s\"", anchortypes[r->action], 855 anchor_call); 856 } else { 857 printf("%s", actiontypes[r->action]); 858 if (r->natpass) 859 printf(" pass"); 860 } 861 if (r->action == PF_DROP) { 862 if (r->rule_flag & PFRULE_RETURN) 863 printf(" return"); 864 else if (r->rule_flag & PFRULE_RETURNRST) { 865 if (!r->return_ttl) 866 printf(" return-rst"); 867 else 868 printf(" return-rst(ttl %d)", r->return_ttl); 869 } else if (r->rule_flag & PFRULE_RETURNICMP) { 870 const struct icmpcodeent *ic, *ic6; 871 872 ic = geticmpcodebynumber(r->return_icmp >> 8, 873 r->return_icmp & 255, AF_INET); 874 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 875 r->return_icmp6 & 255, AF_INET6); 876 877 switch (r->af) { 878 case AF_INET: 879 printf(" return-icmp"); 880 if (ic == NULL) 881 printf("(%u)", r->return_icmp & 255); 882 else 883 printf("(%s)", ic->name); 884 break; 885 case AF_INET6: 886 printf(" return-icmp6"); 887 if (ic6 == NULL) 888 printf("(%u)", r->return_icmp6 & 255); 889 else 890 printf("(%s)", ic6->name); 891 break; 892 default: 893 printf(" return-icmp"); 894 if (ic == NULL) 895 printf("(%u, ", r->return_icmp & 255); 896 else 897 printf("(%s, ", ic->name); 898 if (ic6 == NULL) 899 printf("%u)", r->return_icmp6 & 255); 900 else 901 printf("%s)", ic6->name); 902 break; 903 } 904 } else 905 printf(" drop"); 906 } 907 if (r->direction == PF_IN) 908 printf(" in"); 909 else if (r->direction == PF_OUT) 910 printf(" out"); 911 if (r->log) { 912 printf(" log"); 913 if (r->log & ~PF_LOG || r->logif) { 914 int count = 0; 915 916 printf(" ("); 917 if (r->log & PF_LOG_ALL) 918 printf("%sall", count++ ? ", " : ""); 919 if (r->log & PF_LOG_SOCKET_LOOKUP) 920 printf("%suser", count++ ? ", " : ""); 921 if (r->logif) 922 printf("%sto pflog%u", count++ ? ", " : "", 923 r->logif); 924 printf(")"); 925 } 926 } 927 if (r->quick) 928 printf(" quick"); 929 if (r->ifname[0]) { 930 if (r->ifnot) 931 printf(" on ! %s", r->ifname); 932 else 933 printf(" on %s", r->ifname); 934 } 935 if (r->rt) { 936 if (r->rt == PF_ROUTETO) 937 printf(" route-to"); 938 else if (r->rt == PF_REPLYTO) 939 printf(" reply-to"); 940 else if (r->rt == PF_DUPTO) 941 printf(" dup-to"); 942 printf(" "); 943 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 944 } 945 if (r->af) { 946 if (r->af == AF_INET) 947 printf(" inet"); 948 else 949 printf(" inet6"); 950 } 951 if (r->proto) { 952 const char *protoname; 953 954 if ((protoname = pfctl_proto2name(r->proto)) != NULL) 955 printf(" proto %s", protoname); 956 else 957 printf(" proto %u", r->proto); 958 } 959 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 960 verbose, numeric); 961 if (r->uid.op) 962 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 963 UID_MAX); 964 if (r->gid.op) 965 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 966 GID_MAX); 967 if (r->flags || r->flagset) { 968 printf(" flags "); 969 print_flags(r->flags); 970 printf("/"); 971 print_flags(r->flagset); 972 } else if ((r->action == PF_PASS || r->action == PF_MATCH) && 973 (!r->proto || r->proto == IPPROTO_TCP) && 974 !(r->rule_flag & PFRULE_FRAGMENT) && 975 !anchor_call[0] && r->keep_state) 976 printf(" flags any"); 977 if (r->type) { 978 const struct icmptypeent *it; 979 980 it = geticmptypebynumber(r->type-1, r->af); 981 if (r->af != AF_INET6) 982 printf(" icmp-type"); 983 else 984 printf(" icmp6-type"); 985 if (it != NULL) 986 printf(" %s", it->name); 987 else 988 printf(" %u", r->type-1); 989 if (r->code) { 990 const struct icmpcodeent *ic; 991 992 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 993 if (ic != NULL) 994 printf(" code %s", ic->name); 995 else 996 printf(" code %u", r->code-1); 997 } 998 } 999 if (r->tos) 1000 printf(" tos 0x%2.2x", r->tos); 1001 if (r->prio) 1002 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 1003 if (r->scrub_flags & PFSTATE_SETMASK) { 1004 char *comma = ""; 1005 printf(" set ("); 1006 if (r->scrub_flags & PFSTATE_SETPRIO) { 1007 if (r->set_prio[0] == r->set_prio[1]) 1008 printf("%s prio %u", comma, r->set_prio[0]); 1009 else 1010 printf("%s prio(%u, %u)", comma, r->set_prio[0], 1011 r->set_prio[1]); 1012 comma = ","; 1013 } 1014 if (r->scrub_flags & PFSTATE_SETTOS) { 1015 printf("%s tos 0x%2.2x", comma, r->set_tos); 1016 comma = ","; 1017 } 1018 printf(" )"); 1019 } 1020 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 1021 printf(" no state"); 1022 else if (r->keep_state == PF_STATE_NORMAL) 1023 printf(" keep state"); 1024 else if (r->keep_state == PF_STATE_MODULATE) 1025 printf(" modulate state"); 1026 else if (r->keep_state == PF_STATE_SYNPROXY) 1027 printf(" synproxy state"); 1028 if (r->prob) { 1029 char buf[20]; 1030 1031 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 1032 for (i = strlen(buf)-1; i > 0; i--) { 1033 if (buf[i] == '0') 1034 buf[i] = '\0'; 1035 else { 1036 if (buf[i] == '.') 1037 buf[i] = '\0'; 1038 break; 1039 } 1040 } 1041 printf(" probability %s%%", buf); 1042 } 1043 opts = 0; 1044 if (r->max_states || r->max_src_nodes || r->max_src_states) 1045 opts = 1; 1046 if (r->rule_flag & PFRULE_NOSYNC) 1047 opts = 1; 1048 if (r->rule_flag & PFRULE_SRCTRACK) 1049 opts = 1; 1050 if (r->rule_flag & PFRULE_IFBOUND) 1051 opts = 1; 1052 if (r->rule_flag & PFRULE_STATESLOPPY) 1053 opts = 1; 1054 if (r->rule_flag & PFRULE_PFLOW) 1055 opts = 1; 1056 for (i = 0; !opts && i < PFTM_MAX; ++i) 1057 if (r->timeout[i]) 1058 opts = 1; 1059 if (opts) { 1060 printf(" ("); 1061 if (r->max_states) { 1062 printf("max %u", r->max_states); 1063 opts = 0; 1064 } 1065 if (r->rule_flag & PFRULE_NOSYNC) { 1066 if (!opts) 1067 printf(", "); 1068 printf("no-sync"); 1069 opts = 0; 1070 } 1071 if (r->rule_flag & PFRULE_SRCTRACK) { 1072 if (!opts) 1073 printf(", "); 1074 printf("source-track"); 1075 if (r->rule_flag & PFRULE_RULESRCTRACK) 1076 printf(" rule"); 1077 else 1078 printf(" global"); 1079 opts = 0; 1080 } 1081 if (r->max_src_states) { 1082 if (!opts) 1083 printf(", "); 1084 printf("max-src-states %u", r->max_src_states); 1085 opts = 0; 1086 } 1087 if (r->max_src_conn) { 1088 if (!opts) 1089 printf(", "); 1090 printf("max-src-conn %u", r->max_src_conn); 1091 opts = 0; 1092 } 1093 if (r->max_src_conn_rate.limit) { 1094 if (!opts) 1095 printf(", "); 1096 printf("max-src-conn-rate %u/%u", 1097 r->max_src_conn_rate.limit, 1098 r->max_src_conn_rate.seconds); 1099 opts = 0; 1100 } 1101 if (r->max_src_nodes) { 1102 if (!opts) 1103 printf(", "); 1104 printf("max-src-nodes %u", r->max_src_nodes); 1105 opts = 0; 1106 } 1107 if (r->overload_tblname[0]) { 1108 if (!opts) 1109 printf(", "); 1110 printf("overload <%s>", r->overload_tblname); 1111 if (r->flush) 1112 printf(" flush"); 1113 if (r->flush & PF_FLUSH_GLOBAL) 1114 printf(" global"); 1115 } 1116 if (r->rule_flag & PFRULE_IFBOUND) { 1117 if (!opts) 1118 printf(", "); 1119 printf("if-bound"); 1120 opts = 0; 1121 } 1122 if (r->rule_flag & PFRULE_STATESLOPPY) { 1123 if (!opts) 1124 printf(", "); 1125 printf("sloppy"); 1126 opts = 0; 1127 } 1128 if (r->rule_flag & PFRULE_PFLOW) { 1129 if (!opts) 1130 printf(", "); 1131 printf("pflow"); 1132 opts = 0; 1133 } 1134 for (i = 0; i < PFTM_MAX; ++i) 1135 if (r->timeout[i]) { 1136 int j; 1137 1138 if (!opts) 1139 printf(", "); 1140 opts = 0; 1141 for (j = 0; pf_timeouts[j].name != NULL; 1142 ++j) 1143 if (pf_timeouts[j].timeout == i) 1144 break; 1145 printf("%s %u", pf_timeouts[j].name == NULL ? 1146 "inv.timeout" : pf_timeouts[j].name, 1147 r->timeout[i]); 1148 } 1149 printf(")"); 1150 } 1151 if (r->allow_opts) 1152 printf(" allow-opts"); 1153 if (r->rule_flag & PFRULE_FRAGMENT) 1154 printf(" fragment"); 1155 if (r->action == PF_SCRUB) { 1156 /* Scrub flags for old-style scrub. */ 1157 if (r->rule_flag & PFRULE_NODF) 1158 printf(" no-df"); 1159 if (r->rule_flag & PFRULE_RANDOMID) 1160 printf(" random-id"); 1161 if (r->min_ttl) 1162 printf(" min-ttl %d", r->min_ttl); 1163 if (r->max_mss) 1164 printf(" max-mss %d", r->max_mss); 1165 if (r->rule_flag & PFRULE_SET_TOS) 1166 printf(" set-tos 0x%2.2x", r->set_tos); 1167 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1168 printf(" reassemble tcp"); 1169 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */ 1170 printf(" fragment %sreassemble", 1171 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : ""); 1172 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) { 1173 /* Scrub actions on normal rules. */ 1174 printf(" scrub("); 1175 if (r->scrub_flags & PFSTATE_NODF) 1176 printf(" no-df"); 1177 if (r->scrub_flags & PFSTATE_RANDOMID) 1178 printf(" random-id"); 1179 if (r->min_ttl) 1180 printf(" min-ttl %d", r->min_ttl); 1181 if (r->scrub_flags & PFSTATE_SETTOS) 1182 printf(" set-tos 0x%2.2x", r->set_tos); 1183 if (r->scrub_flags & PFSTATE_SCRUB_TCP) 1184 printf(" reassemble tcp"); 1185 if (r->max_mss) 1186 printf(" max-mss %d", r->max_mss); 1187 printf(")"); 1188 } 1189 i = 0; 1190 while (r->label[i][0]) 1191 printf(" label \"%s\"", r->label[i++]); 1192 if (r->ridentifier) 1193 printf(" ridentifier %u", r->ridentifier); 1194 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */ 1195 if (r->dnrpipe) 1196 printf(" %s(%d, %d)", 1197 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1198 r->dnpipe, r->dnrpipe); 1199 else if (r->dnpipe) 1200 printf(" %s %d", 1201 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1202 r->dnpipe); 1203 if (r->qname[0] && r->pqname[0]) 1204 printf(" queue(%s, %s)", r->qname, r->pqname); 1205 else if (r->qname[0]) 1206 printf(" queue %s", r->qname); 1207 if (r->tagname[0]) 1208 printf(" tag %s", r->tagname); 1209 if (r->match_tagname[0]) { 1210 if (r->match_tag_not) 1211 printf(" !"); 1212 printf(" tagged %s", r->match_tagname); 1213 } 1214 if (r->rtableid != -1) 1215 printf(" rtable %u", r->rtableid); 1216 if (r->divert.port) { 1217 #ifdef __FreeBSD__ 1218 printf(" divert-to %u", ntohs(r->divert.port)); 1219 #else 1220 if (PF_AZERO(&r->divert.addr, r->af)) { 1221 printf(" divert-reply"); 1222 } else { 1223 /* XXX cut&paste from print_addr */ 1224 char buf[48]; 1225 1226 printf(" divert-to "); 1227 if (inet_ntop(r->af, &r->divert.addr, buf, 1228 sizeof(buf)) == NULL) 1229 printf("?"); 1230 else 1231 printf("%s", buf); 1232 printf(" port %u", ntohs(r->divert.port)); 1233 } 1234 #endif 1235 } 1236 if (!anchor_call[0] && (r->action == PF_NAT || 1237 r->action == PF_BINAT || r->action == PF_RDR)) { 1238 printf(" -> "); 1239 print_pool(&r->rpool, r->rpool.proxy_port[0], 1240 r->rpool.proxy_port[1], r->af, r->action); 1241 } 1242 } 1243 1244 void 1245 print_tabledef(const char *name, int flags, int addrs, 1246 struct node_tinithead *nodes) 1247 { 1248 struct node_tinit *ti, *nti; 1249 struct node_host *h; 1250 1251 printf("table <%s>", name); 1252 if (flags & PFR_TFLAG_CONST) 1253 printf(" const"); 1254 if (flags & PFR_TFLAG_PERSIST) 1255 printf(" persist"); 1256 if (flags & PFR_TFLAG_COUNTERS) 1257 printf(" counters"); 1258 SIMPLEQ_FOREACH(ti, nodes, entries) { 1259 if (ti->file) { 1260 printf(" file \"%s\"", ti->file); 1261 continue; 1262 } 1263 printf(" {"); 1264 for (;;) { 1265 for (h = ti->host; h != NULL; h = h->next) { 1266 printf(h->not ? " !" : " "); 1267 print_addr(&h->addr, h->af, 0); 1268 } 1269 nti = SIMPLEQ_NEXT(ti, entries); 1270 if (nti != NULL && nti->file == NULL) 1271 ti = nti; /* merge lists */ 1272 else 1273 break; 1274 } 1275 printf(" }"); 1276 } 1277 if (addrs && SIMPLEQ_EMPTY(nodes)) 1278 printf(" { }"); 1279 printf("\n"); 1280 } 1281 1282 int 1283 parse_flags(char *s) 1284 { 1285 char *p, *q; 1286 u_int8_t f = 0; 1287 1288 for (p = s; *p; p++) { 1289 if ((q = strchr(tcpflags, *p)) == NULL) 1290 return -1; 1291 else 1292 f |= 1 << (q - tcpflags); 1293 } 1294 return (f ? f : PF_TH_ALL); 1295 } 1296 1297 void 1298 set_ipmask(struct node_host *h, u_int8_t b) 1299 { 1300 struct pf_addr *m, *n; 1301 int i, j = 0; 1302 1303 m = &h->addr.v.a.mask; 1304 memset(m, 0, sizeof(*m)); 1305 1306 while (b >= 32) { 1307 m->addr32[j++] = 0xffffffff; 1308 b -= 32; 1309 } 1310 for (i = 31; i > 31-b; --i) 1311 m->addr32[j] |= (1 << i); 1312 if (b) 1313 m->addr32[j] = htonl(m->addr32[j]); 1314 1315 /* Mask off bits of the address that will never be used. */ 1316 n = &h->addr.v.a.addr; 1317 if (h->addr.type == PF_ADDR_ADDRMASK) 1318 for (i = 0; i < 4; i++) 1319 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1320 } 1321 1322 int 1323 check_netmask(struct node_host *h, sa_family_t af) 1324 { 1325 struct node_host *n = NULL; 1326 struct pf_addr *m; 1327 1328 for (n = h; n != NULL; n = n->next) { 1329 if (h->addr.type == PF_ADDR_TABLE) 1330 continue; 1331 m = &h->addr.v.a.mask; 1332 /* netmasks > 32 bit are invalid on v4 */ 1333 if (af == AF_INET && 1334 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1335 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1336 unmask(m, AF_INET6)); 1337 return (1); 1338 } 1339 } 1340 return (0); 1341 } 1342 1343 struct node_host * 1344 gen_dynnode(struct node_host *h, sa_family_t af) 1345 { 1346 struct node_host *n; 1347 struct pf_addr *m; 1348 1349 if (h->addr.type != PF_ADDR_DYNIFTL) 1350 return (NULL); 1351 1352 if ((n = calloc(1, sizeof(*n))) == NULL) 1353 return (NULL); 1354 bcopy(h, n, sizeof(*n)); 1355 n->ifname = NULL; 1356 n->next = NULL; 1357 n->tail = NULL; 1358 1359 /* fix up netmask */ 1360 m = &n->addr.v.a.mask; 1361 if (af == AF_INET && unmask(m, AF_INET6) > 32) 1362 set_ipmask(n, 32); 1363 1364 return (n); 1365 } 1366 1367 /* interface lookup routines */ 1368 1369 static struct node_host *iftab; 1370 1371 /* 1372 * Retrieve the list of groups this interface is a member of and make sure 1373 * each group is in the group map. 1374 */ 1375 static void 1376 ifa_add_groups_to_map(char *ifa_name) 1377 { 1378 int s, len; 1379 struct ifgroupreq ifgr; 1380 struct ifg_req *ifg; 1381 1382 s = get_query_socket(); 1383 1384 /* Get size of group list for this interface */ 1385 memset(&ifgr, 0, sizeof(ifgr)); 1386 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1387 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1388 err(1, "SIOCGIFGROUP"); 1389 1390 /* Retrieve group list for this interface */ 1391 len = ifgr.ifgr_len; 1392 ifgr.ifgr_groups = 1393 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1394 sizeof(struct ifg_req)); 1395 if (ifgr.ifgr_groups == NULL) 1396 err(1, "calloc"); 1397 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1398 err(1, "SIOCGIFGROUP"); 1399 1400 ifg = ifgr.ifgr_groups; 1401 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1402 len -= sizeof(struct ifg_req); 1403 if (strcmp(ifg->ifgrq_group, "all")) { 1404 ENTRY item; 1405 ENTRY *ret_item; 1406 int *answer; 1407 1408 item.key = ifg->ifgrq_group; 1409 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1410 struct ifgroupreq ifgr2; 1411 1412 /* Don't know the answer yet */ 1413 if ((answer = malloc(sizeof(int))) == NULL) 1414 err(1, "malloc"); 1415 1416 bzero(&ifgr2, sizeof(ifgr2)); 1417 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1418 sizeof(ifgr2.ifgr_name)); 1419 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1420 *answer = ifgr2.ifgr_len; 1421 else 1422 *answer = 0; 1423 1424 item.key = strdup(ifg->ifgrq_group); 1425 item.data = answer; 1426 if (hsearch_r(item, ENTER, &ret_item, 1427 &isgroup_map) == 0) 1428 err(1, "interface group query response" 1429 " map insert"); 1430 } 1431 } 1432 } 1433 free(ifgr.ifgr_groups); 1434 } 1435 1436 void 1437 ifa_load(void) 1438 { 1439 struct ifaddrs *ifap, *ifa; 1440 struct node_host *n = NULL, *h = NULL; 1441 1442 if (getifaddrs(&ifap) < 0) 1443 err(1, "getifaddrs"); 1444 1445 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1446 if (!(ifa->ifa_addr->sa_family == AF_INET || 1447 ifa->ifa_addr->sa_family == AF_INET6 || 1448 ifa->ifa_addr->sa_family == AF_LINK)) 1449 continue; 1450 n = calloc(1, sizeof(struct node_host)); 1451 if (n == NULL) 1452 err(1, "address: calloc"); 1453 n->af = ifa->ifa_addr->sa_family; 1454 n->ifa_flags = ifa->ifa_flags; 1455 #ifdef __KAME__ 1456 if (n->af == AF_INET6 && 1457 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1458 ifa->ifa_addr)->sin6_addr) && 1459 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1460 0) { 1461 struct sockaddr_in6 *sin6; 1462 1463 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1464 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1465 sin6->sin6_addr.s6_addr[3]; 1466 sin6->sin6_addr.s6_addr[2] = 0; 1467 sin6->sin6_addr.s6_addr[3] = 0; 1468 } 1469 #endif 1470 n->ifindex = 0; 1471 if (n->af == AF_INET) { 1472 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1473 ifa->ifa_addr)->sin_addr.s_addr, 1474 sizeof(struct in_addr)); 1475 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1476 ifa->ifa_netmask)->sin_addr.s_addr, 1477 sizeof(struct in_addr)); 1478 if (ifa->ifa_broadaddr != NULL) 1479 memcpy(&n->bcast, &((struct sockaddr_in *) 1480 ifa->ifa_broadaddr)->sin_addr.s_addr, 1481 sizeof(struct in_addr)); 1482 if (ifa->ifa_dstaddr != NULL) 1483 memcpy(&n->peer, &((struct sockaddr_in *) 1484 ifa->ifa_dstaddr)->sin_addr.s_addr, 1485 sizeof(struct in_addr)); 1486 } else if (n->af == AF_INET6) { 1487 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1488 ifa->ifa_addr)->sin6_addr.s6_addr, 1489 sizeof(struct in6_addr)); 1490 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1491 ifa->ifa_netmask)->sin6_addr.s6_addr, 1492 sizeof(struct in6_addr)); 1493 if (ifa->ifa_broadaddr != NULL) 1494 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1495 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1496 sizeof(struct in6_addr)); 1497 if (ifa->ifa_dstaddr != NULL) 1498 memcpy(&n->peer, &((struct sockaddr_in6 *) 1499 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1500 sizeof(struct in6_addr)); 1501 n->ifindex = ((struct sockaddr_in6 *) 1502 ifa->ifa_addr)->sin6_scope_id; 1503 } else if (n->af == AF_LINK) { 1504 ifa_add_groups_to_map(ifa->ifa_name); 1505 } 1506 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1507 err(1, "ifa_load: strdup"); 1508 n->next = NULL; 1509 n->tail = n; 1510 if (h == NULL) 1511 h = n; 1512 else { 1513 h->tail->next = n; 1514 h->tail = n; 1515 } 1516 } 1517 1518 iftab = h; 1519 freeifaddrs(ifap); 1520 } 1521 1522 static int 1523 get_socket_domain(void) 1524 { 1525 int sdom; 1526 1527 sdom = AF_UNSPEC; 1528 #ifdef WITH_INET6 1529 if (sdom == AF_UNSPEC && feature_present("inet6")) 1530 sdom = AF_INET6; 1531 #endif 1532 #ifdef WITH_INET 1533 if (sdom == AF_UNSPEC && feature_present("inet")) 1534 sdom = AF_INET; 1535 #endif 1536 if (sdom == AF_UNSPEC) 1537 sdom = AF_LINK; 1538 1539 return (sdom); 1540 } 1541 1542 int 1543 get_query_socket(void) 1544 { 1545 static int s = -1; 1546 1547 if (s == -1) { 1548 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1549 err(1, "socket"); 1550 } 1551 1552 return (s); 1553 } 1554 1555 /* 1556 * Returns the response len if the name is a group, otherwise returns 0. 1557 */ 1558 static int 1559 is_a_group(char *name) 1560 { 1561 ENTRY item; 1562 ENTRY *ret_item; 1563 1564 item.key = name; 1565 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1566 return (0); 1567 1568 return (*(int *)ret_item->data); 1569 } 1570 1571 struct node_host * 1572 ifa_exists(char *ifa_name) 1573 { 1574 struct node_host *n; 1575 1576 if (iftab == NULL) 1577 ifa_load(); 1578 1579 /* check whether this is a group */ 1580 if (is_a_group(ifa_name)) { 1581 /* fake a node_host */ 1582 if ((n = calloc(1, sizeof(*n))) == NULL) 1583 err(1, "calloc"); 1584 if ((n->ifname = strdup(ifa_name)) == NULL) 1585 err(1, "strdup"); 1586 return (n); 1587 } 1588 1589 for (n = iftab; n; n = n->next) { 1590 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1591 return (n); 1592 } 1593 1594 return (NULL); 1595 } 1596 1597 struct node_host * 1598 ifa_grouplookup(char *ifa_name, int flags) 1599 { 1600 struct ifg_req *ifg; 1601 struct ifgroupreq ifgr; 1602 int s, len; 1603 struct node_host *n, *h = NULL; 1604 1605 s = get_query_socket(); 1606 len = is_a_group(ifa_name); 1607 if (len == 0) 1608 return (NULL); 1609 bzero(&ifgr, sizeof(ifgr)); 1610 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1611 ifgr.ifgr_len = len; 1612 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1613 err(1, "calloc"); 1614 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1615 err(1, "SIOCGIFGMEMB"); 1616 1617 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1618 ifg++) { 1619 len -= sizeof(struct ifg_req); 1620 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1621 continue; 1622 if (h == NULL) 1623 h = n; 1624 else { 1625 h->tail->next = n; 1626 h->tail = n->tail; 1627 } 1628 } 1629 free(ifgr.ifgr_groups); 1630 1631 return (h); 1632 } 1633 1634 struct node_host * 1635 ifa_lookup(char *ifa_name, int flags) 1636 { 1637 struct node_host *p = NULL, *h = NULL, *n = NULL; 1638 int got4 = 0, got6 = 0; 1639 const char *last_if = NULL; 1640 1641 /* first load iftab and isgroup_map */ 1642 if (iftab == NULL) 1643 ifa_load(); 1644 1645 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1646 return (h); 1647 1648 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1649 ifa_name = NULL; 1650 1651 for (p = iftab; p; p = p->next) { 1652 if (ifa_skip_if(ifa_name, p)) 1653 continue; 1654 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1655 continue; 1656 if ((flags & PFI_AFLAG_BROADCAST) && 1657 !(p->ifa_flags & IFF_BROADCAST)) 1658 continue; 1659 if ((flags & PFI_AFLAG_PEER) && 1660 !(p->ifa_flags & IFF_POINTOPOINT)) 1661 continue; 1662 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1663 continue; 1664 if (last_if == NULL || strcmp(last_if, p->ifname)) 1665 got4 = got6 = 0; 1666 last_if = p->ifname; 1667 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1668 continue; 1669 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1670 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1671 continue; 1672 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1673 continue; 1674 if (p->af == AF_INET) 1675 got4 = 1; 1676 else 1677 got6 = 1; 1678 n = calloc(1, sizeof(struct node_host)); 1679 if (n == NULL) 1680 err(1, "address: calloc"); 1681 n->af = p->af; 1682 if (flags & PFI_AFLAG_BROADCAST) 1683 memcpy(&n->addr.v.a.addr, &p->bcast, 1684 sizeof(struct pf_addr)); 1685 else if (flags & PFI_AFLAG_PEER) 1686 memcpy(&n->addr.v.a.addr, &p->peer, 1687 sizeof(struct pf_addr)); 1688 else 1689 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1690 sizeof(struct pf_addr)); 1691 if (flags & PFI_AFLAG_NETWORK) 1692 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1693 else { 1694 if (n->af == AF_INET) { 1695 if (p->ifa_flags & IFF_LOOPBACK && 1696 p->ifa_flags & IFF_LINK1) 1697 memcpy(&n->addr.v.a.mask, 1698 &p->addr.v.a.mask, 1699 sizeof(struct pf_addr)); 1700 else 1701 set_ipmask(n, 32); 1702 } else 1703 set_ipmask(n, 128); 1704 } 1705 n->ifindex = p->ifindex; 1706 n->ifname = strdup(p->ifname); 1707 1708 n->next = NULL; 1709 n->tail = n; 1710 if (h == NULL) 1711 h = n; 1712 else { 1713 h->tail->next = n; 1714 h->tail = n; 1715 } 1716 } 1717 return (h); 1718 } 1719 1720 int 1721 ifa_skip_if(const char *filter, struct node_host *p) 1722 { 1723 int n; 1724 1725 if (p->af != AF_INET && p->af != AF_INET6) 1726 return (1); 1727 if (filter == NULL || !*filter) 1728 return (0); 1729 if (!strcmp(p->ifname, filter)) 1730 return (0); /* exact match */ 1731 n = strlen(filter); 1732 if (n < 1 || n >= IFNAMSIZ) 1733 return (1); /* sanity check */ 1734 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1735 return (1); /* only do exact match in that case */ 1736 if (strncmp(p->ifname, filter, n)) 1737 return (1); /* prefix doesn't match */ 1738 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1739 } 1740 1741 1742 struct node_host * 1743 host(const char *s) 1744 { 1745 struct node_host *h = NULL; 1746 int mask, v4mask, v6mask, cont = 1; 1747 char *p, *q, *ps; 1748 1749 if ((p = strrchr(s, '/')) != NULL) { 1750 mask = strtol(p+1, &q, 0); 1751 if (!q || *q || mask > 128 || q == (p+1)) { 1752 fprintf(stderr, "invalid netmask '%s'\n", p); 1753 return (NULL); 1754 } 1755 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1756 err(1, "host: malloc"); 1757 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1758 v4mask = v6mask = mask; 1759 } else { 1760 if ((ps = strdup(s)) == NULL) 1761 err(1, "host: strdup"); 1762 v4mask = 32; 1763 v6mask = 128; 1764 mask = -1; 1765 } 1766 1767 /* IPv4 address? */ 1768 if (cont && (h = host_v4(s, mask)) != NULL) 1769 cont = 0; 1770 1771 /* IPv6 address? */ 1772 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1773 cont = 0; 1774 1775 /* interface with this name exists? */ 1776 /* expensive with thousands of interfaces - prioritze IPv4/6 check */ 1777 if (cont && (h = host_if(ps, mask, &cont)) != NULL) 1778 cont = 0; 1779 1780 /* dns lookup */ 1781 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1782 cont = 0; 1783 free(ps); 1784 1785 if (h == NULL || cont == 1) { 1786 fprintf(stderr, "no IP address found for %s\n", s); 1787 return (NULL); 1788 } 1789 return (h); 1790 } 1791 1792 struct node_host * 1793 host_if(const char *s, int mask, int *cont) 1794 { 1795 struct node_host *n, *h = NULL; 1796 char *p, *ps; 1797 int flags = 0; 1798 1799 if ((ps = strdup(s)) == NULL) 1800 err(1, "host_if: strdup"); 1801 while ((p = strrchr(ps, ':')) != NULL) { 1802 if (!strcmp(p+1, "network")) 1803 flags |= PFI_AFLAG_NETWORK; 1804 else if (!strcmp(p+1, "broadcast")) 1805 flags |= PFI_AFLAG_BROADCAST; 1806 else if (!strcmp(p+1, "peer")) 1807 flags |= PFI_AFLAG_PEER; 1808 else if (!strcmp(p+1, "0")) 1809 flags |= PFI_AFLAG_NOALIAS; 1810 else { 1811 free(ps); 1812 return (NULL); 1813 } 1814 *p = '\0'; 1815 *cont = 0; 1816 } 1817 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1818 fprintf(stderr, "illegal combination of interface modifiers\n"); 1819 free(ps); 1820 return (NULL); 1821 } 1822 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1823 fprintf(stderr, "network or broadcast lookup, but " 1824 "extra netmask given\n"); 1825 free(ps); 1826 return (NULL); 1827 } 1828 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1829 /* interface with this name exists */ 1830 h = ifa_lookup(ps, flags); 1831 for (n = h; n != NULL && mask > -1; n = n->next) 1832 set_ipmask(n, mask); 1833 } 1834 1835 free(ps); 1836 return (h); 1837 } 1838 1839 struct node_host * 1840 host_v4(const char *s, int mask) 1841 { 1842 struct node_host *h = NULL; 1843 struct in_addr ina; 1844 int bits = 32; 1845 1846 memset(&ina, 0, sizeof(struct in_addr)); 1847 if (strrchr(s, '/') != NULL) { 1848 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1849 return (NULL); 1850 } else { 1851 if (inet_pton(AF_INET, s, &ina) != 1) 1852 return (NULL); 1853 } 1854 1855 h = calloc(1, sizeof(struct node_host)); 1856 if (h == NULL) 1857 err(1, "address: calloc"); 1858 h->ifname = NULL; 1859 h->af = AF_INET; 1860 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1861 set_ipmask(h, bits); 1862 h->next = NULL; 1863 h->tail = h; 1864 1865 return (h); 1866 } 1867 1868 struct node_host * 1869 host_v6(const char *s, int mask) 1870 { 1871 struct addrinfo hints, *res; 1872 struct node_host *h = NULL; 1873 1874 memset(&hints, 0, sizeof(hints)); 1875 hints.ai_family = AF_INET6; 1876 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1877 hints.ai_flags = AI_NUMERICHOST; 1878 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1879 h = calloc(1, sizeof(struct node_host)); 1880 if (h == NULL) 1881 err(1, "address: calloc"); 1882 h->ifname = NULL; 1883 h->af = AF_INET6; 1884 memcpy(&h->addr.v.a.addr, 1885 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1886 sizeof(h->addr.v.a.addr)); 1887 h->ifindex = 1888 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1889 set_ipmask(h, mask); 1890 freeaddrinfo(res); 1891 h->next = NULL; 1892 h->tail = h; 1893 } 1894 1895 return (h); 1896 } 1897 1898 struct node_host * 1899 host_dns(const char *s, int v4mask, int v6mask) 1900 { 1901 struct addrinfo hints, *res0, *res; 1902 struct node_host *n, *h = NULL; 1903 int error, noalias = 0; 1904 int got4 = 0, got6 = 0; 1905 char *p, *ps; 1906 1907 if ((ps = strdup(s)) == NULL) 1908 err(1, "host_dns: strdup"); 1909 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1910 noalias = 1; 1911 *p = '\0'; 1912 } 1913 memset(&hints, 0, sizeof(hints)); 1914 hints.ai_family = PF_UNSPEC; 1915 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1916 error = getaddrinfo(ps, NULL, &hints, &res0); 1917 if (error) { 1918 free(ps); 1919 return (h); 1920 } 1921 1922 for (res = res0; res; res = res->ai_next) { 1923 if (res->ai_family != AF_INET && 1924 res->ai_family != AF_INET6) 1925 continue; 1926 if (noalias) { 1927 if (res->ai_family == AF_INET) { 1928 if (got4) 1929 continue; 1930 got4 = 1; 1931 } else { 1932 if (got6) 1933 continue; 1934 got6 = 1; 1935 } 1936 } 1937 n = calloc(1, sizeof(struct node_host)); 1938 if (n == NULL) 1939 err(1, "host_dns: calloc"); 1940 n->ifname = NULL; 1941 n->af = res->ai_family; 1942 if (res->ai_family == AF_INET) { 1943 memcpy(&n->addr.v.a.addr, 1944 &((struct sockaddr_in *) 1945 res->ai_addr)->sin_addr.s_addr, 1946 sizeof(struct in_addr)); 1947 set_ipmask(n, v4mask); 1948 } else { 1949 memcpy(&n->addr.v.a.addr, 1950 &((struct sockaddr_in6 *) 1951 res->ai_addr)->sin6_addr.s6_addr, 1952 sizeof(struct in6_addr)); 1953 n->ifindex = 1954 ((struct sockaddr_in6 *) 1955 res->ai_addr)->sin6_scope_id; 1956 set_ipmask(n, v6mask); 1957 } 1958 n->next = NULL; 1959 n->tail = n; 1960 if (h == NULL) 1961 h = n; 1962 else { 1963 h->tail->next = n; 1964 h->tail = n; 1965 } 1966 } 1967 freeaddrinfo(res0); 1968 free(ps); 1969 1970 return (h); 1971 } 1972 1973 /* 1974 * convert a hostname to a list of addresses and put them in the given buffer. 1975 * test: 1976 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1977 */ 1978 int 1979 append_addr(struct pfr_buffer *b, char *s, int test) 1980 { 1981 char *r; 1982 struct node_host *h, *n; 1983 int rv, not = 0; 1984 1985 for (r = s; *r == '!'; r++) 1986 not = !not; 1987 if ((n = host(r)) == NULL) { 1988 errno = 0; 1989 return (-1); 1990 } 1991 rv = append_addr_host(b, n, test, not); 1992 do { 1993 h = n; 1994 n = n->next; 1995 free(h); 1996 } while (n != NULL); 1997 return (rv); 1998 } 1999 2000 /* 2001 * same as previous function, but with a pre-parsed input and the ability 2002 * to "negate" the result. Does not free the node_host list. 2003 * not: 2004 * setting it to 1 is equivalent to adding "!" in front of parameter s. 2005 */ 2006 int 2007 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 2008 { 2009 int bits; 2010 struct pfr_addr addr; 2011 2012 do { 2013 bzero(&addr, sizeof(addr)); 2014 addr.pfra_not = n->not ^ not; 2015 addr.pfra_af = n->af; 2016 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 2017 switch (n->af) { 2018 case AF_INET: 2019 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 2020 bits = 32; 2021 break; 2022 case AF_INET6: 2023 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 2024 sizeof(struct in6_addr)); 2025 bits = 128; 2026 break; 2027 default: 2028 errno = EINVAL; 2029 return (-1); 2030 } 2031 if ((test && (not || addr.pfra_net != bits)) || 2032 addr.pfra_net > bits) { 2033 errno = EINVAL; 2034 return (-1); 2035 } 2036 if (pfr_buf_add(b, &addr)) 2037 return (-1); 2038 } while ((n = n->next) != NULL); 2039 2040 return (0); 2041 } 2042 2043 int 2044 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 2045 { 2046 struct pfioc_trans_e trans; 2047 2048 bzero(&trans, sizeof(trans)); 2049 trans.rs_num = rs_num; 2050 if (strlcpy(trans.anchor, anchor, 2051 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 2052 errx(1, "pfctl_add_trans: strlcpy"); 2053 2054 return pfr_buf_add(buf, &trans); 2055 } 2056 2057 u_int32_t 2058 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 2059 { 2060 struct pfioc_trans_e *p; 2061 2062 PFRB_FOREACH(p, buf) 2063 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 2064 return (p->ticket); 2065 errx(1, "pfctl_get_ticket: assertion failed"); 2066 } 2067 2068 int 2069 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 2070 { 2071 struct pfioc_trans trans; 2072 2073 bzero(&trans, sizeof(trans)); 2074 trans.size = buf->pfrb_size - from; 2075 trans.esize = sizeof(struct pfioc_trans_e); 2076 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 2077 return ioctl(dev, cmd, &trans); 2078 } 2079