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 <netinet/tcp.h> 48 #include <net/pfvar.h> 49 #include <arpa/inet.h> 50 51 #include <assert.h> 52 #include <search.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <ctype.h> 57 #include <netdb.h> 58 #include <stdarg.h> 59 #include <errno.h> 60 #include <err.h> 61 #include <ifaddrs.h> 62 #include <inttypes.h> 63 #include <unistd.h> 64 65 #include "pfctl_parser.h" 66 #include "pfctl.h" 67 68 void print_op (u_int8_t, const char *, const char *); 69 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int); 70 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned); 71 void print_flags (uint16_t); 72 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 73 struct pf_rule_addr *, sa_family_t, u_int8_t, int, int); 74 int ifa_skip_if(const char *filter, struct node_host *p); 75 76 struct node_host *host_if(const char *, int, int *); 77 struct node_host *host_v4(const char *, int); 78 struct node_host *host_v6(const char *, int); 79 struct node_host *host_dns(const char *, int, int); 80 81 const char * const tcpflags = "FSRPAUEWe"; 82 83 static const struct icmptypeent icmp_type[] = { 84 { "echoreq", ICMP_ECHO }, 85 { "echorep", ICMP_ECHOREPLY }, 86 { "unreach", ICMP_UNREACH }, 87 { "squench", ICMP_SOURCEQUENCH }, 88 { "redir", ICMP_REDIRECT }, 89 { "althost", ICMP_ALTHOSTADDR }, 90 { "routeradv", ICMP_ROUTERADVERT }, 91 { "routersol", ICMP_ROUTERSOLICIT }, 92 { "timex", ICMP_TIMXCEED }, 93 { "paramprob", ICMP_PARAMPROB }, 94 { "timereq", ICMP_TSTAMP }, 95 { "timerep", ICMP_TSTAMPREPLY }, 96 { "inforeq", ICMP_IREQ }, 97 { "inforep", ICMP_IREQREPLY }, 98 { "maskreq", ICMP_MASKREQ }, 99 { "maskrep", ICMP_MASKREPLY }, 100 { "trace", ICMP_TRACEROUTE }, 101 { "dataconv", ICMP_DATACONVERR }, 102 { "mobredir", ICMP_MOBILE_REDIRECT }, 103 { "ipv6-where", ICMP_IPV6_WHEREAREYOU }, 104 { "ipv6-here", ICMP_IPV6_IAMHERE }, 105 { "mobregreq", ICMP_MOBILE_REGREQUEST }, 106 { "mobregrep", ICMP_MOBILE_REGREPLY }, 107 { "skip", ICMP_SKIP }, 108 { "photuris", ICMP_PHOTURIS } 109 }; 110 111 static const struct icmptypeent icmp6_type[] = { 112 { "unreach", ICMP6_DST_UNREACH }, 113 { "toobig", ICMP6_PACKET_TOO_BIG }, 114 { "timex", ICMP6_TIME_EXCEEDED }, 115 { "paramprob", ICMP6_PARAM_PROB }, 116 { "echoreq", ICMP6_ECHO_REQUEST }, 117 { "echorep", ICMP6_ECHO_REPLY }, 118 { "groupqry", ICMP6_MEMBERSHIP_QUERY }, 119 { "listqry", MLD_LISTENER_QUERY }, 120 { "grouprep", ICMP6_MEMBERSHIP_REPORT }, 121 { "listenrep", MLD_LISTENER_REPORT }, 122 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION }, 123 { "listendone", MLD_LISTENER_DONE }, 124 { "routersol", ND_ROUTER_SOLICIT }, 125 { "routeradv", ND_ROUTER_ADVERT }, 126 { "neighbrsol", ND_NEIGHBOR_SOLICIT }, 127 { "neighbradv", ND_NEIGHBOR_ADVERT }, 128 { "redir", ND_REDIRECT }, 129 { "routrrenum", ICMP6_ROUTER_RENUMBERING }, 130 { "wrureq", ICMP6_WRUREQUEST }, 131 { "wrurep", ICMP6_WRUREPLY }, 132 { "fqdnreq", ICMP6_FQDN_QUERY }, 133 { "fqdnrep", ICMP6_FQDN_REPLY }, 134 { "niqry", ICMP6_NI_QUERY }, 135 { "nirep", ICMP6_NI_REPLY }, 136 { "mtraceresp", MLD_MTRACE_RESP }, 137 { "mtrace", MLD_MTRACE } 138 }; 139 140 static const struct icmpcodeent icmp_code[] = { 141 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET }, 142 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST }, 143 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL }, 144 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT }, 145 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG }, 146 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL }, 147 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN }, 148 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN }, 149 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED }, 150 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB }, 151 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB }, 152 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET }, 153 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST }, 154 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB }, 155 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE }, 156 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF }, 157 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET }, 158 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST }, 159 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET }, 160 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST }, 161 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL }, 162 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON }, 163 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS }, 164 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS }, 165 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR }, 166 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT }, 167 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH }, 168 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX }, 169 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED }, 170 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED } 171 }; 172 173 static const struct icmpcodeent icmp6_code[] = { 174 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN }, 175 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE }, 176 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR }, 177 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE }, 178 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR }, 179 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT }, 180 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT }, 181 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY }, 182 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER }, 183 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER }, 184 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK }, 185 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER } 186 }; 187 188 const struct pf_timeout pf_timeouts[] = { 189 { "tcp.first", PFTM_TCP_FIRST_PACKET }, 190 { "tcp.opening", PFTM_TCP_OPENING }, 191 { "tcp.established", PFTM_TCP_ESTABLISHED }, 192 { "tcp.closing", PFTM_TCP_CLOSING }, 193 { "tcp.finwait", PFTM_TCP_FIN_WAIT }, 194 { "tcp.closed", PFTM_TCP_CLOSED }, 195 { "tcp.tsdiff", PFTM_TS_DIFF }, 196 { "sctp.first", PFTM_SCTP_FIRST_PACKET }, 197 { "sctp.opening", PFTM_SCTP_OPENING }, 198 { "sctp.established", PFTM_SCTP_ESTABLISHED }, 199 { "sctp.closing", PFTM_SCTP_CLOSING }, 200 { "sctp.closed", PFTM_SCTP_CLOSED }, 201 { "udp.first", PFTM_UDP_FIRST_PACKET }, 202 { "udp.single", PFTM_UDP_SINGLE }, 203 { "udp.multiple", PFTM_UDP_MULTIPLE }, 204 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 205 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 206 { "other.first", PFTM_OTHER_FIRST_PACKET }, 207 { "other.single", PFTM_OTHER_SINGLE }, 208 { "other.multiple", PFTM_OTHER_MULTIPLE }, 209 { "frag", PFTM_FRAG }, 210 { "interval", PFTM_INTERVAL }, 211 { "adaptive.start", PFTM_ADAPTIVE_START }, 212 { "adaptive.end", PFTM_ADAPTIVE_END }, 213 { "src.track", PFTM_SRC_NODE }, 214 { NULL, 0 } 215 }; 216 217 static struct hsearch_data isgroup_map; 218 219 static __attribute__((constructor)) void 220 pfctl_parser_init(void) 221 { 222 /* 223 * As hdestroy() will never be called on these tables, it will be 224 * safe to use references into the stored data as keys. 225 */ 226 if (hcreate_r(0, &isgroup_map) == 0) 227 err(1, "Failed to create interface group query response map"); 228 } 229 230 const struct icmptypeent * 231 geticmptypebynumber(u_int8_t type, sa_family_t af) 232 { 233 unsigned int i; 234 235 if (af != AF_INET6) { 236 for (i=0; i < nitems(icmp_type); i++) { 237 if (type == icmp_type[i].type) 238 return (&icmp_type[i]); 239 } 240 } else { 241 for (i=0; i < nitems(icmp6_type); i++) { 242 if (type == icmp6_type[i].type) 243 return (&icmp6_type[i]); 244 } 245 } 246 return (NULL); 247 } 248 249 const struct icmptypeent * 250 geticmptypebyname(char *w, sa_family_t af) 251 { 252 unsigned int i; 253 254 if (af != AF_INET6) { 255 for (i=0; i < nitems(icmp_type); i++) { 256 if (!strcmp(w, icmp_type[i].name)) 257 return (&icmp_type[i]); 258 } 259 } else { 260 for (i=0; i < nitems(icmp6_type); i++) { 261 if (!strcmp(w, icmp6_type[i].name)) 262 return (&icmp6_type[i]); 263 } 264 } 265 return (NULL); 266 } 267 268 const struct icmpcodeent * 269 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 270 { 271 unsigned int i; 272 273 if (af != AF_INET6) { 274 for (i=0; i < nitems(icmp_code); i++) { 275 if (type == icmp_code[i].type && 276 code == icmp_code[i].code) 277 return (&icmp_code[i]); 278 } 279 } else { 280 for (i=0; i < nitems(icmp6_code); i++) { 281 if (type == icmp6_code[i].type && 282 code == icmp6_code[i].code) 283 return (&icmp6_code[i]); 284 } 285 } 286 return (NULL); 287 } 288 289 const struct icmpcodeent * 290 geticmpcodebyname(u_long type, char *w, sa_family_t af) 291 { 292 unsigned int i; 293 294 if (af != AF_INET6) { 295 for (i=0; i < nitems(icmp_code); i++) { 296 if (type == icmp_code[i].type && 297 !strcmp(w, icmp_code[i].name)) 298 return (&icmp_code[i]); 299 } 300 } else { 301 for (i=0; i < nitems(icmp6_code); i++) { 302 if (type == icmp6_code[i].type && 303 !strcmp(w, icmp6_code[i].name)) 304 return (&icmp6_code[i]); 305 } 306 } 307 return (NULL); 308 } 309 310 void 311 print_op(u_int8_t op, const char *a1, const char *a2) 312 { 313 if (op == PF_OP_IRG) 314 printf(" %s >< %s", a1, a2); 315 else if (op == PF_OP_XRG) 316 printf(" %s <> %s", a1, a2); 317 else if (op == PF_OP_EQ) 318 printf(" = %s", a1); 319 else if (op == PF_OP_NE) 320 printf(" != %s", a1); 321 else if (op == PF_OP_LT) 322 printf(" < %s", a1); 323 else if (op == PF_OP_LE) 324 printf(" <= %s", a1); 325 else if (op == PF_OP_GT) 326 printf(" > %s", a1); 327 else if (op == PF_OP_GE) 328 printf(" >= %s", a1); 329 else if (op == PF_OP_RRG) 330 printf(" %s:%s", a1, a2); 331 } 332 333 void 334 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric) 335 { 336 char a1[6], a2[6]; 337 struct servent *s; 338 339 if (!numeric) 340 s = getservbyport(p1, proto); 341 else 342 s = NULL; 343 p1 = ntohs(p1); 344 p2 = ntohs(p2); 345 snprintf(a1, sizeof(a1), "%u", p1); 346 snprintf(a2, sizeof(a2), "%u", p2); 347 printf(" port"); 348 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 349 print_op(op, s->s_name, a2); 350 else 351 print_op(op, a1, a2); 352 } 353 354 void 355 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 356 { 357 char a1[11], a2[11]; 358 359 snprintf(a1, sizeof(a1), "%u", u1); 360 snprintf(a2, sizeof(a2), "%u", u2); 361 printf(" %s", t); 362 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 363 print_op(op, "unknown", a2); 364 else 365 print_op(op, a1, a2); 366 } 367 368 void 369 print_flags(uint16_t f) 370 { 371 int i; 372 373 for (i = 0; tcpflags[i]; ++i) 374 if (f & (1 << i)) 375 printf("%c", tcpflags[i]); 376 } 377 378 void 379 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 380 sa_family_t af, u_int8_t proto, int verbose, int numeric) 381 { 382 char buf[PF_OSFP_LEN*3]; 383 if (src->addr.type == PF_ADDR_ADDRMASK && 384 dst->addr.type == PF_ADDR_ADDRMASK && 385 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 386 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 387 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 388 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 389 !src->neg && !dst->neg && 390 !src->port_op && !dst->port_op && 391 osfp == PF_OSFP_ANY) 392 printf(" all"); 393 else { 394 printf(" from "); 395 if (src->neg) 396 printf("! "); 397 print_addr(&src->addr, af, verbose); 398 if (src->port_op) 399 print_port(src->port_op, src->port[0], 400 src->port[1], 401 proto == IPPROTO_TCP ? "tcp" : "udp", 402 numeric); 403 if (osfp != PF_OSFP_ANY) 404 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 405 sizeof(buf))); 406 407 printf(" to "); 408 if (dst->neg) 409 printf("! "); 410 print_addr(&dst->addr, af, verbose); 411 if (dst->port_op) 412 print_port(dst->port_op, dst->port[0], 413 dst->port[1], 414 proto == IPPROTO_TCP ? "tcp" : "udp", 415 numeric); 416 } 417 } 418 419 void 420 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2, 421 sa_family_t af, int id) 422 { 423 struct pf_pooladdr *pooladdr; 424 425 if ((TAILQ_FIRST(&pool->list) != NULL) && 426 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 427 printf("{ "); 428 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 429 switch (id) { 430 case PF_NAT: 431 case PF_RDR: 432 case PF_BINAT: 433 print_addr(&pooladdr->addr, af, 0); 434 break; 435 case PF_PASS: 436 case PF_MATCH: 437 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 438 printf("%s", pooladdr->ifname); 439 else { 440 printf("(%s ", pooladdr->ifname); 441 print_addr(&pooladdr->addr, af, 0); 442 printf(")"); 443 } 444 break; 445 default: 446 break; 447 } 448 if (TAILQ_NEXT(pooladdr, entries) != NULL) 449 printf(", "); 450 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 451 printf(" }"); 452 } 453 switch (id) { 454 case PF_NAT: 455 if ((p1 != PF_NAT_PROXY_PORT_LOW || 456 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 457 if (p1 == p2) 458 printf(" port %u", p1); 459 else 460 printf(" port %u:%u", p1, p2); 461 } 462 break; 463 case PF_RDR: 464 if (p1) { 465 printf(" port %u", p1); 466 if (p2 && (p2 != p1)) 467 printf(":%u", p2); 468 } 469 break; 470 default: 471 break; 472 } 473 switch (pool->opts & PF_POOL_TYPEMASK) { 474 case PF_POOL_NONE: 475 break; 476 case PF_POOL_BITMASK: 477 printf(" bitmask"); 478 break; 479 case PF_POOL_RANDOM: 480 printf(" random"); 481 break; 482 case PF_POOL_SRCHASH: 483 printf(" source-hash 0x%08x%08x%08x%08x", 484 pool->key.key32[0], pool->key.key32[1], 485 pool->key.key32[2], pool->key.key32[3]); 486 break; 487 case PF_POOL_ROUNDROBIN: 488 printf(" round-robin"); 489 break; 490 } 491 if (pool->opts & PF_POOL_STICKYADDR) 492 printf(" sticky-address"); 493 if (pool->opts & PF_POOL_ENDPI) 494 printf(" endpoint-independent"); 495 if (id == PF_NAT && p1 == 0 && p2 == 0) 496 printf(" static-port"); 497 if (pool->mape.offset > 0) 498 printf(" map-e-portset %u/%u/%u", 499 pool->mape.offset, pool->mape.psidlen, pool->mape.psid); 500 } 501 502 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 503 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 504 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 505 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 506 507 void 508 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts) 509 { 510 struct pfctl_status_counter *c; 511 char statline[80], *running; 512 time_t runtime; 513 int i; 514 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 515 static const char hex[] = "0123456789abcdef"; 516 517 runtime = time(NULL) - s->since; 518 running = s->running ? "Enabled" : "Disabled"; 519 520 if (s->since) { 521 unsigned int sec, min, hrs, day = runtime; 522 523 sec = day % 60; 524 day /= 60; 525 min = day % 60; 526 day /= 60; 527 hrs = day % 24; 528 day /= 24; 529 snprintf(statline, sizeof(statline), 530 "Status: %s for %u days %.2u:%.2u:%.2u", 531 running, day, hrs, min, sec); 532 } else 533 snprintf(statline, sizeof(statline), "Status: %s", running); 534 printf("%-44s", statline); 535 switch (s->debug) { 536 case PF_DEBUG_NONE: 537 printf("%15s\n\n", "Debug: None"); 538 break; 539 case PF_DEBUG_URGENT: 540 printf("%15s\n\n", "Debug: Urgent"); 541 break; 542 case PF_DEBUG_MISC: 543 printf("%15s\n\n", "Debug: Misc"); 544 break; 545 case PF_DEBUG_NOISY: 546 printf("%15s\n\n", "Debug: Loud"); 547 break; 548 } 549 550 if (opts & PF_OPT_VERBOSE) { 551 printf("Hostid: 0x%08x\n", s->hostid); 552 553 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 554 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 555 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 556 } 557 buf[i + i] = '\0'; 558 printf("Checksum: 0x%s\n\n", buf); 559 } 560 561 if (s->ifname[0] != 0) { 562 printf("Interface Stats for %-16s %5s %16s\n", 563 s->ifname, "IPv4", "IPv6"); 564 printf(" %-25s %14llu %16llu\n", "Bytes In", 565 (unsigned long long)s->bcounters[0][0], 566 (unsigned long long)s->bcounters[1][0]); 567 printf(" %-25s %14llu %16llu\n", "Bytes Out", 568 (unsigned long long)s->bcounters[0][1], 569 (unsigned long long)s->bcounters[1][1]); 570 printf(" Packets In\n"); 571 printf(" %-23s %14llu %16llu\n", "Passed", 572 (unsigned long long)s->pcounters[0][0][PF_PASS], 573 (unsigned long long)s->pcounters[1][0][PF_PASS]); 574 printf(" %-23s %14llu %16llu\n", "Blocked", 575 (unsigned long long)s->pcounters[0][0][PF_DROP], 576 (unsigned long long)s->pcounters[1][0][PF_DROP]); 577 printf(" Packets Out\n"); 578 printf(" %-23s %14llu %16llu\n", "Passed", 579 (unsigned long long)s->pcounters[0][1][PF_PASS], 580 (unsigned long long)s->pcounters[1][1][PF_PASS]); 581 printf(" %-23s %14llu %16llu\n\n", "Blocked", 582 (unsigned long long)s->pcounters[0][1][PF_DROP], 583 (unsigned long long)s->pcounters[1][1][PF_DROP]); 584 } 585 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 586 printf(" %-25s %14ju %14s\n", "current entries", s->states, ""); 587 TAILQ_FOREACH(c, &s->fcounters, entry) { 588 printf(" %-25s %14ju ", c->name, c->counter); 589 if (runtime > 0) 590 printf("%14.1f/s\n", 591 (double)c->counter / (double)runtime); 592 else 593 printf("%14s\n", ""); 594 } 595 if (opts & PF_OPT_VERBOSE) { 596 printf("Source Tracking Table\n"); 597 printf(" %-25s %14ju %14s\n", "current entries", 598 s->src_nodes, ""); 599 TAILQ_FOREACH(c, &s->scounters, entry) { 600 printf(" %-25s %14ju ", c->name, c->counter); 601 if (runtime > 0) 602 printf("%14.1f/s\n", 603 (double)c->counter / (double)runtime); 604 else 605 printf("%14s\n", ""); 606 } 607 } 608 printf("Counters\n"); 609 TAILQ_FOREACH(c, &s->counters, entry) { 610 printf(" %-25s %14ju ", c->name, c->counter); 611 if (runtime > 0) 612 printf("%14.1f/s\n", 613 (double)c->counter / (double)runtime); 614 else 615 printf("%14s\n", ""); 616 } 617 if (opts & PF_OPT_VERBOSE) { 618 printf("Limit Counters\n"); 619 TAILQ_FOREACH(c, &s->lcounters, entry) { 620 printf(" %-25s %14ju ", c->name, c->counter); 621 if (runtime > 0) 622 printf("%14.1f/s\n", 623 (double)c->counter / (double)runtime); 624 else 625 printf("%14s\n", ""); 626 } 627 628 printf("Syncookies\n"); 629 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE); 630 printf(" %-25s %s\n", "mode", 631 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]); 632 printf(" %-25s %s\n", "active", 633 s->syncookies_active ? "active" : "inactive"); 634 if (opts & PF_OPT_VERBOSE2) { 635 printf(" %-25s %d %%\n", "highwater", cookies->highwater); 636 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater); 637 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states); 638 } 639 printf("Reassemble %24s %s\n", 640 s->reass & PF_REASS_ENABLED ? "yes" : "no", 641 s->reass & PF_REASS_NODF ? "no-df" : "" 642 ); 643 } 644 } 645 646 void 647 print_running(struct pfctl_status *status) 648 { 649 printf("%s\n", status->running ? "Enabled" : "Disabled"); 650 } 651 652 void 653 print_src_node(struct pfctl_src_node *sn, int opts) 654 { 655 struct pf_addr_wrap aw; 656 uint64_t min, sec; 657 658 memset(&aw, 0, sizeof(aw)); 659 if (sn->af == AF_INET) 660 aw.v.a.mask.addr32[0] = 0xffffffff; 661 else 662 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 663 664 aw.v.a.addr = sn->addr; 665 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 666 printf(" -> "); 667 aw.v.a.addr = sn->raddr; 668 print_addr(&aw, sn->naf ? sn->naf : sn->af, opts & PF_OPT_VERBOSE2); 669 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 670 sn->conn, sn->conn_rate.count / 1000, 671 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 672 if (opts & PF_OPT_VERBOSE) { 673 sec = sn->creation % 60; 674 sn->creation /= 60; 675 min = sn->creation % 60; 676 sn->creation /= 60; 677 printf(" age %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64, 678 sn->creation, min, sec); 679 if (sn->states == 0) { 680 sec = sn->expire % 60; 681 sn->expire /= 60; 682 min = sn->expire % 60; 683 sn->expire /= 60; 684 printf(", expires in %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64, 685 sn->expire, min, sec); 686 } 687 printf(", %" PRIu64 " pkts, %" PRIu64 " bytes", 688 sn->packets[0] + sn->packets[1], 689 sn->bytes[0] + sn->bytes[1]); 690 switch (sn->ruletype) { 691 case PF_NAT: 692 if (sn->rule != -1) 693 printf(", nat rule %u", sn->rule); 694 break; 695 case PF_RDR: 696 if (sn->rule != -1) 697 printf(", rdr rule %u", sn->rule); 698 break; 699 case PF_PASS: 700 case PF_MATCH: 701 if (sn->rule != -1) 702 printf(", filter rule %u", sn->rule); 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, ropts; 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_MATCHES) 920 printf("%smatches", count++ ? ", " : ""); 921 if (r->log & PF_LOG_SOCKET_LOOKUP) 922 printf("%suser", count++ ? ", " : ""); 923 if (r->logif) 924 printf("%sto pflog%u", count++ ? ", " : "", 925 r->logif); 926 printf(")"); 927 } 928 } 929 if (r->quick) 930 printf(" quick"); 931 if (r->ifname[0]) { 932 if (r->ifnot) 933 printf(" on ! %s", r->ifname); 934 else 935 printf(" on %s", r->ifname); 936 } 937 if (r->rt) { 938 if (r->rt == PF_ROUTETO) 939 printf(" route-to"); 940 else if (r->rt == PF_REPLYTO) 941 printf(" reply-to"); 942 else if (r->rt == PF_DUPTO) 943 printf(" dup-to"); 944 printf(" "); 945 print_pool(&r->rdr, 0, 0, r->af, PF_PASS); 946 print_pool(&r->route, 0, 0, 947 r->rule_flag & PFRULE_AFTO && r->rt != PF_REPLYTO ? r->naf : r->af, 948 PF_PASS); 949 } 950 if (r->af) { 951 if (r->af == AF_INET) 952 printf(" inet"); 953 else 954 printf(" inet6"); 955 } 956 if (r->proto) { 957 const char *protoname; 958 959 if ((protoname = pfctl_proto2name(r->proto)) != NULL) 960 printf(" proto %s", protoname); 961 else 962 printf(" proto %u", r->proto); 963 } 964 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 965 verbose, numeric); 966 if (r->rcv_ifname[0]) 967 printf(" received-on %s", r->rcv_ifname); 968 if (r->uid.op) 969 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 970 UID_MAX); 971 if (r->gid.op) 972 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 973 GID_MAX); 974 if (r->flags || r->flagset) { 975 printf(" flags "); 976 print_flags(r->flags); 977 printf("/"); 978 print_flags(r->flagset); 979 } else if ((r->action == PF_PASS || r->action == PF_MATCH) && 980 (!r->proto || r->proto == IPPROTO_TCP) && 981 !(r->rule_flag & PFRULE_FRAGMENT) && 982 !anchor_call[0] && r->keep_state) 983 printf(" flags any"); 984 if (r->type) { 985 const struct icmptypeent *it; 986 987 it = geticmptypebynumber(r->type-1, r->af); 988 if (r->af != AF_INET6) 989 printf(" icmp-type"); 990 else 991 printf(" icmp6-type"); 992 if (it != NULL) 993 printf(" %s", it->name); 994 else 995 printf(" %u", r->type-1); 996 if (r->code) { 997 const struct icmpcodeent *ic; 998 999 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 1000 if (ic != NULL) 1001 printf(" code %s", ic->name); 1002 else 1003 printf(" code %u", r->code-1); 1004 } 1005 } 1006 if (r->tos) 1007 printf(" tos 0x%2.2x", r->tos); 1008 if (r->prio) 1009 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 1010 if (r->scrub_flags & PFSTATE_SETMASK) { 1011 char *comma = ""; 1012 printf(" set ("); 1013 if (r->scrub_flags & PFSTATE_SETPRIO) { 1014 if (r->set_prio[0] == r->set_prio[1]) 1015 printf("%s prio %u", comma, r->set_prio[0]); 1016 else 1017 printf("%s prio(%u, %u)", comma, r->set_prio[0], 1018 r->set_prio[1]); 1019 comma = ","; 1020 } 1021 if (r->scrub_flags & PFSTATE_SETTOS) { 1022 printf("%s tos 0x%2.2x", comma, r->set_tos); 1023 comma = ","; 1024 } 1025 printf(" )"); 1026 } 1027 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 1028 printf(" no state"); 1029 else if (r->keep_state == PF_STATE_NORMAL) 1030 printf(" keep state"); 1031 else if (r->keep_state == PF_STATE_MODULATE) 1032 printf(" modulate state"); 1033 else if (r->keep_state == PF_STATE_SYNPROXY) 1034 printf(" synproxy state"); 1035 if (r->prob) { 1036 char buf[20]; 1037 1038 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 1039 for (i = strlen(buf)-1; i > 0; i--) { 1040 if (buf[i] == '0') 1041 buf[i] = '\0'; 1042 else { 1043 if (buf[i] == '.') 1044 buf[i] = '\0'; 1045 break; 1046 } 1047 } 1048 printf(" probability %s%%", buf); 1049 } 1050 ropts = 0; 1051 if (r->max_states || r->max_src_nodes || r->max_src_states) 1052 ropts = 1; 1053 if (r->rule_flag & PFRULE_NOSYNC) 1054 ropts = 1; 1055 if (r->rule_flag & PFRULE_SRCTRACK) 1056 ropts = 1; 1057 if (r->rule_flag & PFRULE_IFBOUND) 1058 ropts = 1; 1059 if (r->rule_flag & PFRULE_STATESLOPPY) 1060 ropts = 1; 1061 if (r->rule_flag & PFRULE_PFLOW) 1062 ropts = 1; 1063 for (i = 0; !ropts && i < PFTM_MAX; ++i) 1064 if (r->timeout[i]) 1065 ropts = 1; 1066 if (ropts) { 1067 printf(" ("); 1068 if (r->max_states) { 1069 printf("max %u", r->max_states); 1070 ropts = 0; 1071 } 1072 if (r->rule_flag & PFRULE_NOSYNC) { 1073 if (!ropts) 1074 printf(", "); 1075 printf("no-sync"); 1076 ropts = 0; 1077 } 1078 if (r->rule_flag & PFRULE_SRCTRACK) { 1079 if (!ropts) 1080 printf(", "); 1081 printf("source-track"); 1082 if (r->rule_flag & PFRULE_RULESRCTRACK) 1083 printf(" rule"); 1084 else 1085 printf(" global"); 1086 ropts = 0; 1087 } 1088 if (r->max_src_states) { 1089 if (!ropts) 1090 printf(", "); 1091 printf("max-src-states %u", r->max_src_states); 1092 ropts = 0; 1093 } 1094 if (r->max_src_conn) { 1095 if (!ropts) 1096 printf(", "); 1097 printf("max-src-conn %u", r->max_src_conn); 1098 ropts = 0; 1099 } 1100 if (r->max_src_conn_rate.limit) { 1101 if (!ropts) 1102 printf(", "); 1103 printf("max-src-conn-rate %u/%u", 1104 r->max_src_conn_rate.limit, 1105 r->max_src_conn_rate.seconds); 1106 ropts = 0; 1107 } 1108 if (r->max_src_nodes) { 1109 if (!ropts) 1110 printf(", "); 1111 printf("max-src-nodes %u", r->max_src_nodes); 1112 ropts = 0; 1113 } 1114 if (r->overload_tblname[0]) { 1115 if (!ropts) 1116 printf(", "); 1117 printf("overload <%s>", r->overload_tblname); 1118 if (r->flush) 1119 printf(" flush"); 1120 if (r->flush & PF_FLUSH_GLOBAL) 1121 printf(" global"); 1122 } 1123 if (r->rule_flag & PFRULE_IFBOUND) { 1124 if (!ropts) 1125 printf(", "); 1126 printf("if-bound"); 1127 ropts = 0; 1128 } 1129 if (r->rule_flag & PFRULE_STATESLOPPY) { 1130 if (!ropts) 1131 printf(", "); 1132 printf("sloppy"); 1133 ropts = 0; 1134 } 1135 if (r->rule_flag & PFRULE_PFLOW) { 1136 if (!ropts) 1137 printf(", "); 1138 printf("pflow"); 1139 ropts = 0; 1140 } 1141 for (i = 0; i < PFTM_MAX; ++i) 1142 if (r->timeout[i]) { 1143 int j; 1144 1145 if (!ropts) 1146 printf(", "); 1147 ropts = 0; 1148 for (j = 0; pf_timeouts[j].name != NULL; 1149 ++j) 1150 if (pf_timeouts[j].timeout == i) 1151 break; 1152 printf("%s %u", pf_timeouts[j].name == NULL ? 1153 "inv.timeout" : pf_timeouts[j].name, 1154 r->timeout[i]); 1155 } 1156 printf(")"); 1157 } 1158 if (r->allow_opts) 1159 printf(" allow-opts"); 1160 if (r->rule_flag & PFRULE_FRAGMENT) 1161 printf(" fragment"); 1162 if (r->action == PF_SCRUB) { 1163 /* Scrub flags for old-style scrub. */ 1164 if (r->rule_flag & PFRULE_NODF) 1165 printf(" no-df"); 1166 if (r->rule_flag & PFRULE_RANDOMID) 1167 printf(" random-id"); 1168 if (r->min_ttl) 1169 printf(" min-ttl %d", r->min_ttl); 1170 if (r->max_mss) 1171 printf(" max-mss %d", r->max_mss); 1172 if (r->rule_flag & PFRULE_SET_TOS) 1173 printf(" set-tos 0x%2.2x", r->set_tos); 1174 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1175 printf(" reassemble tcp"); 1176 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */ 1177 printf(" fragment %sreassemble", 1178 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : ""); 1179 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) { 1180 /* Scrub actions on normal rules. */ 1181 printf(" scrub("); 1182 if (r->scrub_flags & PFSTATE_NODF) 1183 printf(" no-df"); 1184 if (r->scrub_flags & PFSTATE_RANDOMID) 1185 printf(" random-id"); 1186 if (r->min_ttl) 1187 printf(" min-ttl %d", r->min_ttl); 1188 if (r->scrub_flags & PFSTATE_SETTOS) 1189 printf(" set-tos 0x%2.2x", r->set_tos); 1190 if (r->scrub_flags & PFSTATE_SCRUB_TCP) 1191 printf(" reassemble tcp"); 1192 if (r->max_mss) 1193 printf(" max-mss %d", r->max_mss); 1194 printf(")"); 1195 } 1196 i = 0; 1197 while (r->label[i][0]) 1198 printf(" label \"%s\"", r->label[i++]); 1199 if (r->ridentifier) 1200 printf(" ridentifier %u", r->ridentifier); 1201 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */ 1202 if (r->dnrpipe) 1203 printf(" %s(%d, %d)", 1204 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1205 r->dnpipe, r->dnrpipe); 1206 else if (r->dnpipe) 1207 printf(" %s %d", 1208 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1209 r->dnpipe); 1210 if (r->qname[0] && r->pqname[0]) 1211 printf(" queue(%s, %s)", r->qname, r->pqname); 1212 else if (r->qname[0]) 1213 printf(" queue %s", r->qname); 1214 if (r->tagname[0]) 1215 printf(" tag %s", r->tagname); 1216 if (r->match_tagname[0]) { 1217 if (r->match_tag_not) 1218 printf(" !"); 1219 printf(" tagged %s", r->match_tagname); 1220 } 1221 if (r->rtableid != -1) 1222 printf(" rtable %u", r->rtableid); 1223 if (r->divert.port) { 1224 #ifdef __FreeBSD__ 1225 printf(" divert-to %u", ntohs(r->divert.port)); 1226 #else 1227 if (PF_AZERO(&r->divert.addr, r->af)) { 1228 printf(" divert-reply"); 1229 } else { 1230 /* XXX cut&paste from print_addr */ 1231 char buf[48]; 1232 1233 printf(" divert-to "); 1234 if (inet_ntop(r->af, &r->divert.addr, buf, 1235 sizeof(buf)) == NULL) 1236 printf("?"); 1237 else 1238 printf("%s", buf); 1239 printf(" port %u", ntohs(r->divert.port)); 1240 } 1241 #endif 1242 } 1243 if (!anchor_call[0] && ! TAILQ_EMPTY(&r->nat.list) && 1244 r->rule_flag & PFRULE_AFTO) { 1245 printf(" af-to %s from ", r->naf == AF_INET ? "inet" : "inet6"); 1246 print_pool(&r->nat, r->nat.proxy_port[0], r->nat.proxy_port[1], 1247 r->naf ? r->naf : r->af, PF_NAT); 1248 if (r->rdr.cur != NULL && !TAILQ_EMPTY(&r->rdr.list)) { 1249 printf(" to "); 1250 print_pool(&r->rdr, r->rdr.proxy_port[0], 1251 r->rdr.proxy_port[1], r->naf ? r->naf : r->af, 1252 PF_RDR); 1253 } 1254 } 1255 if (!anchor_call[0] && 1256 (r->action == PF_NAT || r->action == PF_BINAT || 1257 r->action == PF_RDR)) { 1258 printf(" -> "); 1259 print_pool(&r->rdr, r->rdr.proxy_port[0], 1260 r->rdr.proxy_port[1], r->af, r->action); 1261 } 1262 } 1263 1264 void 1265 print_tabledef(const char *name, int flags, int addrs, 1266 struct node_tinithead *nodes) 1267 { 1268 struct node_tinit *ti, *nti; 1269 struct node_host *h; 1270 1271 printf("table <%s>", name); 1272 if (flags & PFR_TFLAG_CONST) 1273 printf(" const"); 1274 if (flags & PFR_TFLAG_PERSIST) 1275 printf(" persist"); 1276 if (flags & PFR_TFLAG_COUNTERS) 1277 printf(" counters"); 1278 SIMPLEQ_FOREACH(ti, nodes, entries) { 1279 if (ti->file) { 1280 printf(" file \"%s\"", ti->file); 1281 continue; 1282 } 1283 printf(" {"); 1284 for (;;) { 1285 for (h = ti->host; h != NULL; h = h->next) { 1286 printf(h->not ? " !" : " "); 1287 print_addr(&h->addr, h->af, 0); 1288 } 1289 nti = SIMPLEQ_NEXT(ti, entries); 1290 if (nti != NULL && nti->file == NULL) 1291 ti = nti; /* merge lists */ 1292 else 1293 break; 1294 } 1295 printf(" }"); 1296 } 1297 if (addrs && SIMPLEQ_EMPTY(nodes)) 1298 printf(" { }"); 1299 printf("\n"); 1300 } 1301 1302 int 1303 parse_flags(char *s) 1304 { 1305 char *p, *q; 1306 uint16_t f = 0; 1307 1308 for (p = s; *p; p++) { 1309 if ((q = strchr(tcpflags, *p)) == NULL) 1310 return -1; 1311 else 1312 f |= 1 << (q - tcpflags); 1313 } 1314 return (f ? f : TH_FLAGS); 1315 } 1316 1317 void 1318 set_ipmask(struct node_host *h, u_int8_t b) 1319 { 1320 struct pf_addr *m, *n; 1321 int i, j = 0; 1322 1323 m = &h->addr.v.a.mask; 1324 memset(m, 0, sizeof(*m)); 1325 1326 while (b >= 32) { 1327 m->addr32[j++] = 0xffffffff; 1328 b -= 32; 1329 } 1330 for (i = 31; i > 31-b; --i) 1331 m->addr32[j] |= (1 << i); 1332 if (b) 1333 m->addr32[j] = htonl(m->addr32[j]); 1334 1335 /* Mask off bits of the address that will never be used. */ 1336 n = &h->addr.v.a.addr; 1337 if (h->addr.type == PF_ADDR_ADDRMASK) 1338 for (i = 0; i < 4; i++) 1339 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1340 } 1341 1342 int 1343 check_netmask(struct node_host *h, sa_family_t af) 1344 { 1345 struct node_host *n = NULL; 1346 struct pf_addr *m; 1347 1348 for (n = h; n != NULL; n = n->next) { 1349 if (h->addr.type == PF_ADDR_TABLE) 1350 continue; 1351 m = &h->addr.v.a.mask; 1352 /* netmasks > 32 bit are invalid on v4 */ 1353 if (af == AF_INET && 1354 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1355 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1356 unmask(m, AF_INET6)); 1357 return (1); 1358 } 1359 } 1360 return (0); 1361 } 1362 1363 struct node_host * 1364 gen_dynnode(struct node_host *h, sa_family_t af) 1365 { 1366 struct node_host *n; 1367 struct pf_addr *m; 1368 1369 if (h->addr.type != PF_ADDR_DYNIFTL) 1370 return (NULL); 1371 1372 if ((n = calloc(1, sizeof(*n))) == NULL) 1373 return (NULL); 1374 bcopy(h, n, sizeof(*n)); 1375 n->ifname = NULL; 1376 n->next = NULL; 1377 n->tail = NULL; 1378 1379 /* fix up netmask */ 1380 m = &n->addr.v.a.mask; 1381 if (af == AF_INET && unmask(m, AF_INET6) > 32) 1382 set_ipmask(n, 32); 1383 1384 return (n); 1385 } 1386 1387 /* interface lookup routines */ 1388 1389 static struct node_host *iftab; 1390 1391 /* 1392 * Retrieve the list of groups this interface is a member of and make sure 1393 * each group is in the group map. 1394 */ 1395 static void 1396 ifa_add_groups_to_map(char *ifa_name) 1397 { 1398 int s, len; 1399 struct ifgroupreq ifgr; 1400 struct ifg_req *ifg; 1401 1402 s = get_query_socket(); 1403 1404 /* Get size of group list for this interface */ 1405 memset(&ifgr, 0, sizeof(ifgr)); 1406 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1407 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1408 err(1, "SIOCGIFGROUP"); 1409 1410 /* Retrieve group list for this interface */ 1411 len = ifgr.ifgr_len; 1412 ifgr.ifgr_groups = 1413 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1414 sizeof(struct ifg_req)); 1415 if (ifgr.ifgr_groups == NULL) 1416 err(1, "calloc"); 1417 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1418 err(1, "SIOCGIFGROUP"); 1419 1420 ifg = ifgr.ifgr_groups; 1421 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1422 len -= sizeof(struct ifg_req); 1423 if (strcmp(ifg->ifgrq_group, "all")) { 1424 ENTRY item; 1425 ENTRY *ret_item; 1426 int *answer; 1427 1428 item.key = ifg->ifgrq_group; 1429 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1430 struct ifgroupreq ifgr2; 1431 1432 /* Don't know the answer yet */ 1433 if ((answer = malloc(sizeof(int))) == NULL) 1434 err(1, "malloc"); 1435 1436 bzero(&ifgr2, sizeof(ifgr2)); 1437 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1438 sizeof(ifgr2.ifgr_name)); 1439 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1440 *answer = ifgr2.ifgr_len; 1441 else 1442 *answer = 0; 1443 1444 item.key = strdup(ifg->ifgrq_group); 1445 item.data = answer; 1446 if (hsearch_r(item, ENTER, &ret_item, 1447 &isgroup_map) == 0) 1448 err(1, "interface group query response" 1449 " map insert"); 1450 } 1451 } 1452 } 1453 free(ifgr.ifgr_groups); 1454 } 1455 1456 void 1457 ifa_load(void) 1458 { 1459 struct ifaddrs *ifap, *ifa; 1460 struct node_host *n = NULL, *h = NULL; 1461 1462 if (getifaddrs(&ifap) < 0) 1463 err(1, "getifaddrs"); 1464 1465 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1466 if (!(ifa->ifa_addr->sa_family == AF_INET || 1467 ifa->ifa_addr->sa_family == AF_INET6 || 1468 ifa->ifa_addr->sa_family == AF_LINK)) 1469 continue; 1470 n = calloc(1, sizeof(struct node_host)); 1471 if (n == NULL) 1472 err(1, "address: calloc"); 1473 n->af = ifa->ifa_addr->sa_family; 1474 n->ifa_flags = ifa->ifa_flags; 1475 #ifdef __KAME__ 1476 if (n->af == AF_INET6 && 1477 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1478 ifa->ifa_addr)->sin6_addr) && 1479 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1480 0) { 1481 struct sockaddr_in6 *sin6; 1482 1483 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1484 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1485 sin6->sin6_addr.s6_addr[3]; 1486 sin6->sin6_addr.s6_addr[2] = 0; 1487 sin6->sin6_addr.s6_addr[3] = 0; 1488 } 1489 #endif 1490 n->ifindex = 0; 1491 if (n->af == AF_INET) { 1492 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1493 ifa->ifa_addr)->sin_addr.s_addr, 1494 sizeof(struct in_addr)); 1495 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1496 ifa->ifa_netmask)->sin_addr.s_addr, 1497 sizeof(struct in_addr)); 1498 if (ifa->ifa_broadaddr != NULL) 1499 memcpy(&n->bcast, &((struct sockaddr_in *) 1500 ifa->ifa_broadaddr)->sin_addr.s_addr, 1501 sizeof(struct in_addr)); 1502 if (ifa->ifa_dstaddr != NULL) 1503 memcpy(&n->peer, &((struct sockaddr_in *) 1504 ifa->ifa_dstaddr)->sin_addr.s_addr, 1505 sizeof(struct in_addr)); 1506 } else if (n->af == AF_INET6) { 1507 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1508 ifa->ifa_addr)->sin6_addr.s6_addr, 1509 sizeof(struct in6_addr)); 1510 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1511 ifa->ifa_netmask)->sin6_addr.s6_addr, 1512 sizeof(struct in6_addr)); 1513 if (ifa->ifa_broadaddr != NULL) 1514 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1515 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1516 sizeof(struct in6_addr)); 1517 if (ifa->ifa_dstaddr != NULL) 1518 memcpy(&n->peer, &((struct sockaddr_in6 *) 1519 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1520 sizeof(struct in6_addr)); 1521 n->ifindex = ((struct sockaddr_in6 *) 1522 ifa->ifa_addr)->sin6_scope_id; 1523 } else if (n->af == AF_LINK) { 1524 ifa_add_groups_to_map(ifa->ifa_name); 1525 } 1526 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1527 err(1, "ifa_load: strdup"); 1528 n->next = NULL; 1529 n->tail = n; 1530 if (h == NULL) 1531 h = n; 1532 else { 1533 h->tail->next = n; 1534 h->tail = n; 1535 } 1536 } 1537 1538 iftab = h; 1539 freeifaddrs(ifap); 1540 } 1541 1542 static int 1543 get_socket_domain(void) 1544 { 1545 int sdom; 1546 1547 sdom = AF_UNSPEC; 1548 #ifdef WITH_INET6 1549 if (sdom == AF_UNSPEC && feature_present("inet6")) 1550 sdom = AF_INET6; 1551 #endif 1552 #ifdef WITH_INET 1553 if (sdom == AF_UNSPEC && feature_present("inet")) 1554 sdom = AF_INET; 1555 #endif 1556 if (sdom == AF_UNSPEC) 1557 sdom = AF_LINK; 1558 1559 return (sdom); 1560 } 1561 1562 int 1563 get_query_socket(void) 1564 { 1565 static int s = -1; 1566 1567 if (s == -1) { 1568 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1569 err(1, "socket"); 1570 } 1571 1572 return (s); 1573 } 1574 1575 /* 1576 * Returns the response len if the name is a group, otherwise returns 0. 1577 */ 1578 static int 1579 is_a_group(char *name) 1580 { 1581 ENTRY item; 1582 ENTRY *ret_item; 1583 1584 item.key = name; 1585 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1586 return (0); 1587 1588 return (*(int *)ret_item->data); 1589 } 1590 1591 struct node_host * 1592 ifa_exists(char *ifa_name) 1593 { 1594 struct node_host *n; 1595 1596 if (iftab == NULL) 1597 ifa_load(); 1598 1599 /* check whether this is a group */ 1600 if (is_a_group(ifa_name)) { 1601 /* fake a node_host */ 1602 if ((n = calloc(1, sizeof(*n))) == NULL) 1603 err(1, "calloc"); 1604 if ((n->ifname = strdup(ifa_name)) == NULL) 1605 err(1, "strdup"); 1606 return (n); 1607 } 1608 1609 for (n = iftab; n; n = n->next) { 1610 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1611 return (n); 1612 } 1613 1614 return (NULL); 1615 } 1616 1617 struct node_host * 1618 ifa_grouplookup(char *ifa_name, int flags) 1619 { 1620 struct ifg_req *ifg; 1621 struct ifgroupreq ifgr; 1622 int s, len; 1623 struct node_host *n, *h = NULL; 1624 1625 s = get_query_socket(); 1626 len = is_a_group(ifa_name); 1627 if (len == 0) 1628 return (NULL); 1629 bzero(&ifgr, sizeof(ifgr)); 1630 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1631 ifgr.ifgr_len = len; 1632 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1633 err(1, "calloc"); 1634 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1635 err(1, "SIOCGIFGMEMB"); 1636 1637 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1638 ifg++) { 1639 len -= sizeof(struct ifg_req); 1640 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1641 continue; 1642 if (h == NULL) 1643 h = n; 1644 else { 1645 h->tail->next = n; 1646 h->tail = n->tail; 1647 } 1648 } 1649 free(ifgr.ifgr_groups); 1650 1651 return (h); 1652 } 1653 1654 struct node_host * 1655 ifa_lookup(char *ifa_name, int flags) 1656 { 1657 struct node_host *p = NULL, *h = NULL, *n = NULL; 1658 int got4 = 0, got6 = 0; 1659 const char *last_if = NULL; 1660 1661 /* first load iftab and isgroup_map */ 1662 if (iftab == NULL) 1663 ifa_load(); 1664 1665 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1666 return (h); 1667 1668 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1669 ifa_name = NULL; 1670 1671 for (p = iftab; p; p = p->next) { 1672 if (ifa_skip_if(ifa_name, p)) 1673 continue; 1674 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1675 continue; 1676 if ((flags & PFI_AFLAG_BROADCAST) && 1677 !(p->ifa_flags & IFF_BROADCAST)) 1678 continue; 1679 if ((flags & PFI_AFLAG_PEER) && 1680 !(p->ifa_flags & IFF_POINTOPOINT)) 1681 continue; 1682 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1683 continue; 1684 if (last_if == NULL || strcmp(last_if, p->ifname)) 1685 got4 = got6 = 0; 1686 last_if = p->ifname; 1687 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1688 continue; 1689 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1690 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1691 continue; 1692 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1693 continue; 1694 if (p->af == AF_INET) 1695 got4 = 1; 1696 else 1697 got6 = 1; 1698 n = calloc(1, sizeof(struct node_host)); 1699 if (n == NULL) 1700 err(1, "address: calloc"); 1701 n->af = p->af; 1702 if (flags & PFI_AFLAG_BROADCAST) 1703 memcpy(&n->addr.v.a.addr, &p->bcast, 1704 sizeof(struct pf_addr)); 1705 else if (flags & PFI_AFLAG_PEER) 1706 memcpy(&n->addr.v.a.addr, &p->peer, 1707 sizeof(struct pf_addr)); 1708 else 1709 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1710 sizeof(struct pf_addr)); 1711 if (flags & PFI_AFLAG_NETWORK) 1712 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1713 else { 1714 if (n->af == AF_INET) { 1715 if (p->ifa_flags & IFF_LOOPBACK && 1716 p->ifa_flags & IFF_LINK1) 1717 memcpy(&n->addr.v.a.mask, 1718 &p->addr.v.a.mask, 1719 sizeof(struct pf_addr)); 1720 else 1721 set_ipmask(n, 32); 1722 } else 1723 set_ipmask(n, 128); 1724 } 1725 n->ifindex = p->ifindex; 1726 n->ifname = strdup(p->ifname); 1727 1728 n->next = NULL; 1729 n->tail = n; 1730 if (h == NULL) 1731 h = n; 1732 else { 1733 h->tail->next = n; 1734 h->tail = n; 1735 } 1736 } 1737 return (h); 1738 } 1739 1740 int 1741 ifa_skip_if(const char *filter, struct node_host *p) 1742 { 1743 int n; 1744 1745 if (p->af != AF_INET && p->af != AF_INET6) 1746 return (1); 1747 if (filter == NULL || !*filter) 1748 return (0); 1749 if (!strcmp(p->ifname, filter)) 1750 return (0); /* exact match */ 1751 n = strlen(filter); 1752 if (n < 1 || n >= IFNAMSIZ) 1753 return (1); /* sanity check */ 1754 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1755 return (1); /* only do exact match in that case */ 1756 if (strncmp(p->ifname, filter, n)) 1757 return (1); /* prefix doesn't match */ 1758 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1759 } 1760 1761 1762 struct node_host * 1763 host(const char *s) 1764 { 1765 struct node_host *h = NULL; 1766 int mask, v4mask, v6mask, cont = 1; 1767 char *p, *q, *ps; 1768 1769 if ((p = strrchr(s, '/')) != NULL) { 1770 mask = strtol(p+1, &q, 0); 1771 if (!q || *q || mask > 128 || q == (p+1)) { 1772 fprintf(stderr, "invalid netmask '%s'\n", p); 1773 return (NULL); 1774 } 1775 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1776 err(1, "host: malloc"); 1777 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1778 v4mask = v6mask = mask; 1779 } else { 1780 if ((ps = strdup(s)) == NULL) 1781 err(1, "host: strdup"); 1782 v4mask = 32; 1783 v6mask = 128; 1784 mask = -1; 1785 } 1786 1787 /* IPv4 address? */ 1788 if (cont && (h = host_v4(s, mask)) != NULL) 1789 cont = 0; 1790 1791 /* IPv6 address? */ 1792 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1793 cont = 0; 1794 1795 /* interface with this name exists? */ 1796 /* expensive with thousands of interfaces - prioritze IPv4/6 check */ 1797 if (cont && (h = host_if(ps, mask, &cont)) != NULL) 1798 cont = 0; 1799 1800 /* dns lookup */ 1801 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1802 cont = 0; 1803 free(ps); 1804 1805 if (h == NULL || cont == 1) { 1806 fprintf(stderr, "no IP address found for %s\n", s); 1807 return (NULL); 1808 } 1809 return (h); 1810 } 1811 1812 struct node_host * 1813 host_if(const char *s, int mask, int *cont) 1814 { 1815 struct node_host *n, *h = NULL; 1816 char *p, *ps; 1817 int flags = 0; 1818 1819 if ((ps = strdup(s)) == NULL) 1820 err(1, "host_if: strdup"); 1821 while ((p = strrchr(ps, ':')) != NULL) { 1822 if (!strcmp(p+1, "network")) 1823 flags |= PFI_AFLAG_NETWORK; 1824 else if (!strcmp(p+1, "broadcast")) 1825 flags |= PFI_AFLAG_BROADCAST; 1826 else if (!strcmp(p+1, "peer")) 1827 flags |= PFI_AFLAG_PEER; 1828 else if (!strcmp(p+1, "0")) 1829 flags |= PFI_AFLAG_NOALIAS; 1830 else { 1831 free(ps); 1832 return (NULL); 1833 } 1834 *p = '\0'; 1835 *cont = 0; 1836 } 1837 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1838 fprintf(stderr, "illegal combination of interface modifiers\n"); 1839 free(ps); 1840 return (NULL); 1841 } 1842 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1843 fprintf(stderr, "network or broadcast lookup, but " 1844 "extra netmask given\n"); 1845 free(ps); 1846 return (NULL); 1847 } 1848 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1849 /* interface with this name exists */ 1850 h = ifa_lookup(ps, flags); 1851 for (n = h; n != NULL && mask > -1; n = n->next) 1852 set_ipmask(n, mask); 1853 } 1854 1855 free(ps); 1856 return (h); 1857 } 1858 1859 struct node_host * 1860 host_v4(const char *s, int mask) 1861 { 1862 struct node_host *h = NULL; 1863 struct in_addr ina; 1864 int bits = 32; 1865 1866 memset(&ina, 0, sizeof(struct in_addr)); 1867 if (strrchr(s, '/') != NULL) { 1868 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1869 return (NULL); 1870 } else { 1871 if (inet_pton(AF_INET, s, &ina) != 1) 1872 return (NULL); 1873 } 1874 1875 h = calloc(1, sizeof(struct node_host)); 1876 if (h == NULL) 1877 err(1, "address: calloc"); 1878 h->ifname = NULL; 1879 h->af = AF_INET; 1880 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1881 set_ipmask(h, bits); 1882 h->next = NULL; 1883 h->tail = h; 1884 1885 return (h); 1886 } 1887 1888 struct node_host * 1889 host_v6(const char *s, int mask) 1890 { 1891 struct addrinfo hints, *res; 1892 struct node_host *h = NULL; 1893 1894 memset(&hints, 0, sizeof(hints)); 1895 hints.ai_family = AF_INET6; 1896 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1897 hints.ai_flags = AI_NUMERICHOST; 1898 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1899 h = calloc(1, sizeof(struct node_host)); 1900 if (h == NULL) 1901 err(1, "address: calloc"); 1902 h->ifname = NULL; 1903 h->af = AF_INET6; 1904 memcpy(&h->addr.v.a.addr, 1905 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1906 sizeof(h->addr.v.a.addr)); 1907 h->ifindex = 1908 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1909 set_ipmask(h, mask); 1910 freeaddrinfo(res); 1911 h->next = NULL; 1912 h->tail = h; 1913 } 1914 1915 return (h); 1916 } 1917 1918 struct node_host * 1919 host_dns(const char *s, int v4mask, int v6mask) 1920 { 1921 struct addrinfo hints, *res0, *res; 1922 struct node_host *n, *h = NULL; 1923 int error, noalias = 0; 1924 int got4 = 0, got6 = 0; 1925 char *p, *ps; 1926 1927 if ((ps = strdup(s)) == NULL) 1928 err(1, "host_dns: strdup"); 1929 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1930 noalias = 1; 1931 *p = '\0'; 1932 } 1933 memset(&hints, 0, sizeof(hints)); 1934 hints.ai_family = PF_UNSPEC; 1935 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1936 error = getaddrinfo(ps, NULL, &hints, &res0); 1937 if (error) { 1938 free(ps); 1939 return (h); 1940 } 1941 1942 for (res = res0; res; res = res->ai_next) { 1943 if (res->ai_family != AF_INET && 1944 res->ai_family != AF_INET6) 1945 continue; 1946 if (noalias) { 1947 if (res->ai_family == AF_INET) { 1948 if (got4) 1949 continue; 1950 got4 = 1; 1951 } else { 1952 if (got6) 1953 continue; 1954 got6 = 1; 1955 } 1956 } 1957 n = calloc(1, sizeof(struct node_host)); 1958 if (n == NULL) 1959 err(1, "host_dns: calloc"); 1960 n->ifname = NULL; 1961 n->af = res->ai_family; 1962 if (res->ai_family == AF_INET) { 1963 memcpy(&n->addr.v.a.addr, 1964 &((struct sockaddr_in *) 1965 res->ai_addr)->sin_addr.s_addr, 1966 sizeof(struct in_addr)); 1967 set_ipmask(n, v4mask); 1968 } else { 1969 memcpy(&n->addr.v.a.addr, 1970 &((struct sockaddr_in6 *) 1971 res->ai_addr)->sin6_addr.s6_addr, 1972 sizeof(struct in6_addr)); 1973 n->ifindex = 1974 ((struct sockaddr_in6 *) 1975 res->ai_addr)->sin6_scope_id; 1976 set_ipmask(n, v6mask); 1977 } 1978 n->next = NULL; 1979 n->tail = n; 1980 if (h == NULL) 1981 h = n; 1982 else { 1983 h->tail->next = n; 1984 h->tail = n; 1985 } 1986 } 1987 freeaddrinfo(res0); 1988 free(ps); 1989 1990 return (h); 1991 } 1992 1993 /* 1994 * convert a hostname to a list of addresses and put them in the given buffer. 1995 * test: 1996 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1997 */ 1998 int 1999 append_addr(struct pfr_buffer *b, char *s, int test) 2000 { 2001 char *r; 2002 struct node_host *h, *n; 2003 int rv, not = 0; 2004 2005 for (r = s; *r == '!'; r++) 2006 not = !not; 2007 if ((n = host(r)) == NULL) { 2008 errno = 0; 2009 return (-1); 2010 } 2011 rv = append_addr_host(b, n, test, not); 2012 do { 2013 h = n; 2014 n = n->next; 2015 free(h); 2016 } while (n != NULL); 2017 return (rv); 2018 } 2019 2020 /* 2021 * same as previous function, but with a pre-parsed input and the ability 2022 * to "negate" the result. Does not free the node_host list. 2023 * not: 2024 * setting it to 1 is equivalent to adding "!" in front of parameter s. 2025 */ 2026 int 2027 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 2028 { 2029 int bits; 2030 struct pfr_addr addr; 2031 2032 do { 2033 bzero(&addr, sizeof(addr)); 2034 addr.pfra_not = n->not ^ not; 2035 addr.pfra_af = n->af; 2036 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 2037 switch (n->af) { 2038 case AF_INET: 2039 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 2040 bits = 32; 2041 break; 2042 case AF_INET6: 2043 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 2044 sizeof(struct in6_addr)); 2045 bits = 128; 2046 break; 2047 default: 2048 errno = EINVAL; 2049 return (-1); 2050 } 2051 if ((test && (not || addr.pfra_net != bits)) || 2052 addr.pfra_net > bits) { 2053 errno = EINVAL; 2054 return (-1); 2055 } 2056 if (pfr_buf_add(b, &addr)) 2057 return (-1); 2058 } while ((n = n->next) != NULL); 2059 2060 return (0); 2061 } 2062 2063 int 2064 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 2065 { 2066 struct pfioc_trans_e trans; 2067 2068 bzero(&trans, sizeof(trans)); 2069 trans.rs_num = rs_num; 2070 if (strlcpy(trans.anchor, anchor, 2071 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 2072 errx(1, "pfctl_add_trans: strlcpy"); 2073 2074 return pfr_buf_add(buf, &trans); 2075 } 2076 2077 u_int32_t 2078 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 2079 { 2080 struct pfioc_trans_e *p; 2081 2082 PFRB_FOREACH(p, buf) 2083 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 2084 return (p->ticket); 2085 errx(1, "pfctl_get_ticket: assertion failed"); 2086 } 2087 2088 int 2089 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 2090 { 2091 struct pfioc_trans trans; 2092 2093 bzero(&trans, sizeof(trans)); 2094 trans.size = buf->pfrb_size - from; 2095 trans.esize = sizeof(struct pfioc_trans_e); 2096 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 2097 return ioctl(dev, cmd, &trans); 2098 } 2099