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 (pool->opts & PF_POOL_ENDPI) 492 printf(" endpoint-independent"); 493 if (id == PF_NAT && p1 == 0 && p2 == 0) 494 printf(" static-port"); 495 if (pool->mape.offset > 0) 496 printf(" map-e-portset %u/%u/%u", 497 pool->mape.offset, pool->mape.psidlen, pool->mape.psid); 498 } 499 500 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 501 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 502 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 503 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 504 505 void 506 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts) 507 { 508 struct pfctl_status_counter *c; 509 char statline[80], *running; 510 time_t runtime; 511 int i; 512 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 513 static const char hex[] = "0123456789abcdef"; 514 515 runtime = time(NULL) - s->since; 516 running = s->running ? "Enabled" : "Disabled"; 517 518 if (s->since) { 519 unsigned int sec, min, hrs, day = runtime; 520 521 sec = day % 60; 522 day /= 60; 523 min = day % 60; 524 day /= 60; 525 hrs = day % 24; 526 day /= 24; 527 snprintf(statline, sizeof(statline), 528 "Status: %s for %u days %.2u:%.2u:%.2u", 529 running, day, hrs, min, sec); 530 } else 531 snprintf(statline, sizeof(statline), "Status: %s", running); 532 printf("%-44s", statline); 533 switch (s->debug) { 534 case PF_DEBUG_NONE: 535 printf("%15s\n\n", "Debug: None"); 536 break; 537 case PF_DEBUG_URGENT: 538 printf("%15s\n\n", "Debug: Urgent"); 539 break; 540 case PF_DEBUG_MISC: 541 printf("%15s\n\n", "Debug: Misc"); 542 break; 543 case PF_DEBUG_NOISY: 544 printf("%15s\n\n", "Debug: Loud"); 545 break; 546 } 547 548 if (opts & PF_OPT_VERBOSE) { 549 printf("Hostid: 0x%08x\n", s->hostid); 550 551 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 552 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 553 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 554 } 555 buf[i + i] = '\0'; 556 printf("Checksum: 0x%s\n\n", buf); 557 } 558 559 if (s->ifname[0] != 0) { 560 printf("Interface Stats for %-16s %5s %16s\n", 561 s->ifname, "IPv4", "IPv6"); 562 printf(" %-25s %14llu %16llu\n", "Bytes In", 563 (unsigned long long)s->bcounters[0][0], 564 (unsigned long long)s->bcounters[1][0]); 565 printf(" %-25s %14llu %16llu\n", "Bytes Out", 566 (unsigned long long)s->bcounters[0][1], 567 (unsigned long long)s->bcounters[1][1]); 568 printf(" Packets In\n"); 569 printf(" %-23s %14llu %16llu\n", "Passed", 570 (unsigned long long)s->pcounters[0][0][PF_PASS], 571 (unsigned long long)s->pcounters[1][0][PF_PASS]); 572 printf(" %-23s %14llu %16llu\n", "Blocked", 573 (unsigned long long)s->pcounters[0][0][PF_DROP], 574 (unsigned long long)s->pcounters[1][0][PF_DROP]); 575 printf(" Packets Out\n"); 576 printf(" %-23s %14llu %16llu\n", "Passed", 577 (unsigned long long)s->pcounters[0][1][PF_PASS], 578 (unsigned long long)s->pcounters[1][1][PF_PASS]); 579 printf(" %-23s %14llu %16llu\n\n", "Blocked", 580 (unsigned long long)s->pcounters[0][1][PF_DROP], 581 (unsigned long long)s->pcounters[1][1][PF_DROP]); 582 } 583 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 584 printf(" %-25s %14ju %14s\n", "current entries", s->states, ""); 585 TAILQ_FOREACH(c, &s->fcounters, entry) { 586 printf(" %-25s %14ju ", c->name, c->counter); 587 if (runtime > 0) 588 printf("%14.1f/s\n", 589 (double)c->counter / (double)runtime); 590 else 591 printf("%14s\n", ""); 592 } 593 if (opts & PF_OPT_VERBOSE) { 594 printf("Source Tracking Table\n"); 595 printf(" %-25s %14ju %14s\n", "current entries", 596 s->src_nodes, ""); 597 TAILQ_FOREACH(c, &s->scounters, entry) { 598 printf(" %-25s %14ju ", c->name, c->counter); 599 if (runtime > 0) 600 printf("%14.1f/s\n", 601 (double)c->counter / (double)runtime); 602 else 603 printf("%14s\n", ""); 604 } 605 } 606 printf("Counters\n"); 607 TAILQ_FOREACH(c, &s->counters, entry) { 608 printf(" %-25s %14ju ", c->name, c->counter); 609 if (runtime > 0) 610 printf("%14.1f/s\n", 611 (double)c->counter / (double)runtime); 612 else 613 printf("%14s\n", ""); 614 } 615 if (opts & PF_OPT_VERBOSE) { 616 printf("Limit Counters\n"); 617 TAILQ_FOREACH(c, &s->lcounters, entry) { 618 printf(" %-25s %14ju ", c->name, c->counter); 619 if (runtime > 0) 620 printf("%14.1f/s\n", 621 (double)c->counter / (double)runtime); 622 else 623 printf("%14s\n", ""); 624 } 625 626 printf("Syncookies\n"); 627 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE); 628 printf(" %-25s %s\n", "mode", 629 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]); 630 printf(" %-25s %s\n", "active", 631 s->syncookies_active ? "active" : "inactive"); 632 if (opts & PF_OPT_VERBOSE2) { 633 printf(" %-25s %d %%\n", "highwater", cookies->highwater); 634 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater); 635 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states); 636 } 637 printf("Reassemble %24s %s\n", 638 s->reass & PF_REASS_ENABLED ? "yes" : "no", 639 s->reass & PF_REASS_NODF ? "no-df" : "" 640 ); 641 } 642 } 643 644 void 645 print_running(struct pfctl_status *status) 646 { 647 printf("%s\n", status->running ? "Enabled" : "Disabled"); 648 } 649 650 void 651 print_src_node(struct pf_src_node *sn, int opts) 652 { 653 struct pf_addr_wrap aw; 654 int min, sec; 655 656 memset(&aw, 0, sizeof(aw)); 657 if (sn->af == AF_INET) 658 aw.v.a.mask.addr32[0] = 0xffffffff; 659 else 660 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 661 662 aw.v.a.addr = sn->addr; 663 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 664 printf(" -> "); 665 aw.v.a.addr = sn->raddr; 666 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 667 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 668 sn->conn, sn->conn_rate.count / 1000, 669 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 670 if (opts & PF_OPT_VERBOSE) { 671 sec = sn->creation % 60; 672 sn->creation /= 60; 673 min = sn->creation % 60; 674 sn->creation /= 60; 675 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 676 if (sn->states == 0) { 677 sec = sn->expire % 60; 678 sn->expire /= 60; 679 min = sn->expire % 60; 680 sn->expire /= 60; 681 printf(", expires in %.2u:%.2u:%.2u", 682 sn->expire, min, sec); 683 } 684 printf(", %llu pkts, %llu bytes", 685 #ifdef __FreeBSD__ 686 (unsigned long long)(sn->packets[0] + sn->packets[1]), 687 (unsigned long long)(sn->bytes[0] + sn->bytes[1])); 688 #else 689 sn->packets[0] + sn->packets[1], 690 sn->bytes[0] + sn->bytes[1]); 691 #endif 692 switch (sn->ruletype) { 693 case PF_NAT: 694 if (sn->rule.nr != -1) 695 printf(", nat rule %u", sn->rule.nr); 696 break; 697 case PF_RDR: 698 if (sn->rule.nr != -1) 699 printf(", rdr rule %u", sn->rule.nr); 700 break; 701 case PF_PASS: 702 case PF_MATCH: 703 if (sn->rule.nr != -1) 704 printf(", filter rule %u", sn->rule.nr); 705 break; 706 } 707 printf("\n"); 708 } 709 } 710 711 static void 712 print_eth_addr(const struct pfctl_eth_addr *a) 713 { 714 int i, masklen = ETHER_ADDR_LEN * 8; 715 bool seen_unset = false; 716 717 for (i = 0; i < ETHER_ADDR_LEN; i++) { 718 if (a->addr[i] != 0) 719 break; 720 } 721 722 /* Unset, so don't print anything. */ 723 if (i == ETHER_ADDR_LEN) 724 return; 725 726 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "", 727 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4], 728 a->addr[5]); 729 730 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) { 731 bool isset = a->mask[i / 8] & (1 << i % 8); 732 733 if (! seen_unset) { 734 if (isset) 735 continue; 736 seen_unset = true; 737 masklen = i; 738 } else { 739 /* Not actually a continuous mask, so print the whole 740 * thing. */ 741 if (isset) 742 break; 743 continue; 744 } 745 } 746 747 if (masklen == (ETHER_ADDR_LEN * 8)) 748 return; 749 750 if (i == (ETHER_ADDR_LEN * 8)) { 751 printf("/%d", masklen); 752 return; 753 } 754 755 printf("&%02x:%02x:%02x:%02x:%02x:%02x", 756 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4], 757 a->mask[5]); 758 } 759 760 void 761 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call, 762 int rule_numbers) 763 { 764 static const char *actiontypes[] = { "pass", "block", "", "", "", "", 765 "", "", "", "", "", "", "match" }; 766 767 int i; 768 769 if (rule_numbers) 770 printf("@%u ", r->nr); 771 772 printf("ether "); 773 if (anchor_call[0]) { 774 if (anchor_call[0] == '_') { 775 printf("anchor"); 776 } else 777 printf("anchor \"%s\"", anchor_call); 778 } else { 779 printf("%s", actiontypes[r->action]); 780 } 781 if (r->direction == PF_IN) 782 printf(" in"); 783 else if (r->direction == PF_OUT) 784 printf(" out"); 785 786 if (r->quick) 787 printf(" quick"); 788 if (r->ifname[0]) { 789 if (r->ifnot) 790 printf(" on ! %s", r->ifname); 791 else 792 printf(" on %s", r->ifname); 793 } 794 if (r->bridge_to[0]) 795 printf(" bridge-to %s", r->bridge_to); 796 if (r->proto) 797 printf(" proto 0x%04x", r->proto); 798 799 if (r->src.isset) { 800 printf(" from "); 801 print_eth_addr(&r->src); 802 } 803 if (r->dst.isset) { 804 printf(" to "); 805 print_eth_addr(&r->dst); 806 } 807 printf(" l3"); 808 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst, 809 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0, 810 0, 0); 811 812 i = 0; 813 while (r->label[i][0]) 814 printf(" label \"%s\"", r->label[i++]); 815 if (r->ridentifier) 816 printf(" ridentifier %u", r->ridentifier); 817 818 if (r->qname[0]) 819 printf(" queue %s", r->qname); 820 if (r->tagname[0]) 821 printf(" tag %s", r->tagname); 822 if (r->match_tagname[0]) { 823 if (r->match_tag_not) 824 printf(" !"); 825 printf(" tagged %s", r->match_tagname); 826 } 827 if (r->dnpipe) 828 printf(" %s %d", 829 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 830 r->dnpipe); 831 } 832 833 void 834 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric) 835 { 836 static const char *actiontypes[] = { "pass", "block", "scrub", 837 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr", 838 "", "", "match"}; 839 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 840 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 841 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 842 int i, opts; 843 char *p; 844 845 if (verbose) 846 printf("@%d ", r->nr); 847 if (r->action == PF_MATCH) 848 printf("match"); 849 else if (r->action > PF_NORDR) 850 printf("action(%d)", r->action); 851 else if (anchor_call[0]) { 852 p = strrchr(anchor_call, '/'); 853 if (p ? p[1] == '_' : anchor_call[0] == '_') 854 printf("%s", anchortypes[r->action]); 855 else 856 printf("%s \"%s\"", anchortypes[r->action], 857 anchor_call); 858 } else { 859 printf("%s", actiontypes[r->action]); 860 if (r->natpass) 861 printf(" pass"); 862 } 863 if (r->action == PF_DROP) { 864 if (r->rule_flag & PFRULE_RETURN) 865 printf(" return"); 866 else if (r->rule_flag & PFRULE_RETURNRST) { 867 if (!r->return_ttl) 868 printf(" return-rst"); 869 else 870 printf(" return-rst(ttl %d)", r->return_ttl); 871 } else if (r->rule_flag & PFRULE_RETURNICMP) { 872 const struct icmpcodeent *ic, *ic6; 873 874 ic = geticmpcodebynumber(r->return_icmp >> 8, 875 r->return_icmp & 255, AF_INET); 876 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 877 r->return_icmp6 & 255, AF_INET6); 878 879 switch (r->af) { 880 case AF_INET: 881 printf(" return-icmp"); 882 if (ic == NULL) 883 printf("(%u)", r->return_icmp & 255); 884 else 885 printf("(%s)", ic->name); 886 break; 887 case AF_INET6: 888 printf(" return-icmp6"); 889 if (ic6 == NULL) 890 printf("(%u)", r->return_icmp6 & 255); 891 else 892 printf("(%s)", ic6->name); 893 break; 894 default: 895 printf(" return-icmp"); 896 if (ic == NULL) 897 printf("(%u, ", r->return_icmp & 255); 898 else 899 printf("(%s, ", ic->name); 900 if (ic6 == NULL) 901 printf("%u)", r->return_icmp6 & 255); 902 else 903 printf("%s)", ic6->name); 904 break; 905 } 906 } else 907 printf(" drop"); 908 } 909 if (r->direction == PF_IN) 910 printf(" in"); 911 else if (r->direction == PF_OUT) 912 printf(" out"); 913 if (r->log) { 914 printf(" log"); 915 if (r->log & ~PF_LOG || r->logif) { 916 int count = 0; 917 918 printf(" ("); 919 if (r->log & PF_LOG_ALL) 920 printf("%sall", 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->rpool, 0, 0, r->af, PF_PASS); 946 } 947 if (r->af) { 948 if (r->af == AF_INET) 949 printf(" inet"); 950 else 951 printf(" inet6"); 952 } 953 if (r->proto) { 954 const char *protoname; 955 956 if ((protoname = pfctl_proto2name(r->proto)) != NULL) 957 printf(" proto %s", protoname); 958 else 959 printf(" proto %u", r->proto); 960 } 961 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 962 verbose, numeric); 963 if (r->rcv_ifname[0]) 964 printf(" received-on %s", r->rcv_ifname); 965 if (r->uid.op) 966 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 967 UID_MAX); 968 if (r->gid.op) 969 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 970 GID_MAX); 971 if (r->flags || r->flagset) { 972 printf(" flags "); 973 print_flags(r->flags); 974 printf("/"); 975 print_flags(r->flagset); 976 } else if ((r->action == PF_PASS || r->action == PF_MATCH) && 977 (!r->proto || r->proto == IPPROTO_TCP) && 978 !(r->rule_flag & PFRULE_FRAGMENT) && 979 !anchor_call[0] && r->keep_state) 980 printf(" flags any"); 981 if (r->type) { 982 const struct icmptypeent *it; 983 984 it = geticmptypebynumber(r->type-1, r->af); 985 if (r->af != AF_INET6) 986 printf(" icmp-type"); 987 else 988 printf(" icmp6-type"); 989 if (it != NULL) 990 printf(" %s", it->name); 991 else 992 printf(" %u", r->type-1); 993 if (r->code) { 994 const struct icmpcodeent *ic; 995 996 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 997 if (ic != NULL) 998 printf(" code %s", ic->name); 999 else 1000 printf(" code %u", r->code-1); 1001 } 1002 } 1003 if (r->tos) 1004 printf(" tos 0x%2.2x", r->tos); 1005 if (r->prio) 1006 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 1007 if (r->scrub_flags & PFSTATE_SETMASK) { 1008 char *comma = ""; 1009 printf(" set ("); 1010 if (r->scrub_flags & PFSTATE_SETPRIO) { 1011 if (r->set_prio[0] == r->set_prio[1]) 1012 printf("%s prio %u", comma, r->set_prio[0]); 1013 else 1014 printf("%s prio(%u, %u)", comma, r->set_prio[0], 1015 r->set_prio[1]); 1016 comma = ","; 1017 } 1018 if (r->scrub_flags & PFSTATE_SETTOS) { 1019 printf("%s tos 0x%2.2x", comma, r->set_tos); 1020 comma = ","; 1021 } 1022 printf(" )"); 1023 } 1024 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 1025 printf(" no state"); 1026 else if (r->keep_state == PF_STATE_NORMAL) 1027 printf(" keep state"); 1028 else if (r->keep_state == PF_STATE_MODULATE) 1029 printf(" modulate state"); 1030 else if (r->keep_state == PF_STATE_SYNPROXY) 1031 printf(" synproxy state"); 1032 if (r->prob) { 1033 char buf[20]; 1034 1035 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 1036 for (i = strlen(buf)-1; i > 0; i--) { 1037 if (buf[i] == '0') 1038 buf[i] = '\0'; 1039 else { 1040 if (buf[i] == '.') 1041 buf[i] = '\0'; 1042 break; 1043 } 1044 } 1045 printf(" probability %s%%", buf); 1046 } 1047 opts = 0; 1048 if (r->max_states || r->max_src_nodes || r->max_src_states) 1049 opts = 1; 1050 if (r->rule_flag & PFRULE_NOSYNC) 1051 opts = 1; 1052 if (r->rule_flag & PFRULE_SRCTRACK) 1053 opts = 1; 1054 if (r->rule_flag & PFRULE_IFBOUND) 1055 opts = 1; 1056 if (r->rule_flag & PFRULE_STATESLOPPY) 1057 opts = 1; 1058 if (r->rule_flag & PFRULE_PFLOW) 1059 opts = 1; 1060 for (i = 0; !opts && i < PFTM_MAX; ++i) 1061 if (r->timeout[i]) 1062 opts = 1; 1063 if (opts) { 1064 printf(" ("); 1065 if (r->max_states) { 1066 printf("max %u", r->max_states); 1067 opts = 0; 1068 } 1069 if (r->rule_flag & PFRULE_NOSYNC) { 1070 if (!opts) 1071 printf(", "); 1072 printf("no-sync"); 1073 opts = 0; 1074 } 1075 if (r->rule_flag & PFRULE_SRCTRACK) { 1076 if (!opts) 1077 printf(", "); 1078 printf("source-track"); 1079 if (r->rule_flag & PFRULE_RULESRCTRACK) 1080 printf(" rule"); 1081 else 1082 printf(" global"); 1083 opts = 0; 1084 } 1085 if (r->max_src_states) { 1086 if (!opts) 1087 printf(", "); 1088 printf("max-src-states %u", r->max_src_states); 1089 opts = 0; 1090 } 1091 if (r->max_src_conn) { 1092 if (!opts) 1093 printf(", "); 1094 printf("max-src-conn %u", r->max_src_conn); 1095 opts = 0; 1096 } 1097 if (r->max_src_conn_rate.limit) { 1098 if (!opts) 1099 printf(", "); 1100 printf("max-src-conn-rate %u/%u", 1101 r->max_src_conn_rate.limit, 1102 r->max_src_conn_rate.seconds); 1103 opts = 0; 1104 } 1105 if (r->max_src_nodes) { 1106 if (!opts) 1107 printf(", "); 1108 printf("max-src-nodes %u", r->max_src_nodes); 1109 opts = 0; 1110 } 1111 if (r->overload_tblname[0]) { 1112 if (!opts) 1113 printf(", "); 1114 printf("overload <%s>", r->overload_tblname); 1115 if (r->flush) 1116 printf(" flush"); 1117 if (r->flush & PF_FLUSH_GLOBAL) 1118 printf(" global"); 1119 } 1120 if (r->rule_flag & PFRULE_IFBOUND) { 1121 if (!opts) 1122 printf(", "); 1123 printf("if-bound"); 1124 opts = 0; 1125 } 1126 if (r->rule_flag & PFRULE_STATESLOPPY) { 1127 if (!opts) 1128 printf(", "); 1129 printf("sloppy"); 1130 opts = 0; 1131 } 1132 if (r->rule_flag & PFRULE_PFLOW) { 1133 if (!opts) 1134 printf(", "); 1135 printf("pflow"); 1136 opts = 0; 1137 } 1138 for (i = 0; i < PFTM_MAX; ++i) 1139 if (r->timeout[i]) { 1140 int j; 1141 1142 if (!opts) 1143 printf(", "); 1144 opts = 0; 1145 for (j = 0; pf_timeouts[j].name != NULL; 1146 ++j) 1147 if (pf_timeouts[j].timeout == i) 1148 break; 1149 printf("%s %u", pf_timeouts[j].name == NULL ? 1150 "inv.timeout" : pf_timeouts[j].name, 1151 r->timeout[i]); 1152 } 1153 printf(")"); 1154 } 1155 if (r->allow_opts) 1156 printf(" allow-opts"); 1157 if (r->rule_flag & PFRULE_FRAGMENT) 1158 printf(" fragment"); 1159 if (r->action == PF_SCRUB) { 1160 /* Scrub flags for old-style scrub. */ 1161 if (r->rule_flag & PFRULE_NODF) 1162 printf(" no-df"); 1163 if (r->rule_flag & PFRULE_RANDOMID) 1164 printf(" random-id"); 1165 if (r->min_ttl) 1166 printf(" min-ttl %d", r->min_ttl); 1167 if (r->max_mss) 1168 printf(" max-mss %d", r->max_mss); 1169 if (r->rule_flag & PFRULE_SET_TOS) 1170 printf(" set-tos 0x%2.2x", r->set_tos); 1171 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1172 printf(" reassemble tcp"); 1173 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */ 1174 printf(" fragment %sreassemble", 1175 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : ""); 1176 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) { 1177 /* Scrub actions on normal rules. */ 1178 printf(" scrub("); 1179 if (r->scrub_flags & PFSTATE_NODF) 1180 printf(" no-df"); 1181 if (r->scrub_flags & PFSTATE_RANDOMID) 1182 printf(" random-id"); 1183 if (r->min_ttl) 1184 printf(" min-ttl %d", r->min_ttl); 1185 if (r->scrub_flags & PFSTATE_SETTOS) 1186 printf(" set-tos 0x%2.2x", r->set_tos); 1187 if (r->scrub_flags & PFSTATE_SCRUB_TCP) 1188 printf(" reassemble tcp"); 1189 if (r->max_mss) 1190 printf(" max-mss %d", r->max_mss); 1191 printf(")"); 1192 } 1193 i = 0; 1194 while (r->label[i][0]) 1195 printf(" label \"%s\"", r->label[i++]); 1196 if (r->ridentifier) 1197 printf(" ridentifier %u", r->ridentifier); 1198 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */ 1199 if (r->dnrpipe) 1200 printf(" %s(%d, %d)", 1201 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1202 r->dnpipe, r->dnrpipe); 1203 else if (r->dnpipe) 1204 printf(" %s %d", 1205 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1206 r->dnpipe); 1207 if (r->qname[0] && r->pqname[0]) 1208 printf(" queue(%s, %s)", r->qname, r->pqname); 1209 else if (r->qname[0]) 1210 printf(" queue %s", r->qname); 1211 if (r->tagname[0]) 1212 printf(" tag %s", r->tagname); 1213 if (r->match_tagname[0]) { 1214 if (r->match_tag_not) 1215 printf(" !"); 1216 printf(" tagged %s", r->match_tagname); 1217 } 1218 if (r->rtableid != -1) 1219 printf(" rtable %u", r->rtableid); 1220 if (r->divert.port) { 1221 #ifdef __FreeBSD__ 1222 printf(" divert-to %u", ntohs(r->divert.port)); 1223 #else 1224 if (PF_AZERO(&r->divert.addr, r->af)) { 1225 printf(" divert-reply"); 1226 } else { 1227 /* XXX cut&paste from print_addr */ 1228 char buf[48]; 1229 1230 printf(" divert-to "); 1231 if (inet_ntop(r->af, &r->divert.addr, buf, 1232 sizeof(buf)) == NULL) 1233 printf("?"); 1234 else 1235 printf("%s", buf); 1236 printf(" port %u", ntohs(r->divert.port)); 1237 } 1238 #endif 1239 } 1240 if (!anchor_call[0] && (r->action == PF_NAT || 1241 r->action == PF_BINAT || r->action == PF_RDR)) { 1242 printf(" -> "); 1243 print_pool(&r->rpool, r->rpool.proxy_port[0], 1244 r->rpool.proxy_port[1], r->af, r->action); 1245 } 1246 } 1247 1248 void 1249 print_tabledef(const char *name, int flags, int addrs, 1250 struct node_tinithead *nodes) 1251 { 1252 struct node_tinit *ti, *nti; 1253 struct node_host *h; 1254 1255 printf("table <%s>", name); 1256 if (flags & PFR_TFLAG_CONST) 1257 printf(" const"); 1258 if (flags & PFR_TFLAG_PERSIST) 1259 printf(" persist"); 1260 if (flags & PFR_TFLAG_COUNTERS) 1261 printf(" counters"); 1262 SIMPLEQ_FOREACH(ti, nodes, entries) { 1263 if (ti->file) { 1264 printf(" file \"%s\"", ti->file); 1265 continue; 1266 } 1267 printf(" {"); 1268 for (;;) { 1269 for (h = ti->host; h != NULL; h = h->next) { 1270 printf(h->not ? " !" : " "); 1271 print_addr(&h->addr, h->af, 0); 1272 } 1273 nti = SIMPLEQ_NEXT(ti, entries); 1274 if (nti != NULL && nti->file == NULL) 1275 ti = nti; /* merge lists */ 1276 else 1277 break; 1278 } 1279 printf(" }"); 1280 } 1281 if (addrs && SIMPLEQ_EMPTY(nodes)) 1282 printf(" { }"); 1283 printf("\n"); 1284 } 1285 1286 int 1287 parse_flags(char *s) 1288 { 1289 char *p, *q; 1290 u_int8_t f = 0; 1291 1292 for (p = s; *p; p++) { 1293 if ((q = strchr(tcpflags, *p)) == NULL) 1294 return -1; 1295 else 1296 f |= 1 << (q - tcpflags); 1297 } 1298 return (f ? f : PF_TH_ALL); 1299 } 1300 1301 void 1302 set_ipmask(struct node_host *h, u_int8_t b) 1303 { 1304 struct pf_addr *m, *n; 1305 int i, j = 0; 1306 1307 m = &h->addr.v.a.mask; 1308 memset(m, 0, sizeof(*m)); 1309 1310 while (b >= 32) { 1311 m->addr32[j++] = 0xffffffff; 1312 b -= 32; 1313 } 1314 for (i = 31; i > 31-b; --i) 1315 m->addr32[j] |= (1 << i); 1316 if (b) 1317 m->addr32[j] = htonl(m->addr32[j]); 1318 1319 /* Mask off bits of the address that will never be used. */ 1320 n = &h->addr.v.a.addr; 1321 if (h->addr.type == PF_ADDR_ADDRMASK) 1322 for (i = 0; i < 4; i++) 1323 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1324 } 1325 1326 int 1327 check_netmask(struct node_host *h, sa_family_t af) 1328 { 1329 struct node_host *n = NULL; 1330 struct pf_addr *m; 1331 1332 for (n = h; n != NULL; n = n->next) { 1333 if (h->addr.type == PF_ADDR_TABLE) 1334 continue; 1335 m = &h->addr.v.a.mask; 1336 /* netmasks > 32 bit are invalid on v4 */ 1337 if (af == AF_INET && 1338 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1339 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1340 unmask(m, AF_INET6)); 1341 return (1); 1342 } 1343 } 1344 return (0); 1345 } 1346 1347 struct node_host * 1348 gen_dynnode(struct node_host *h, sa_family_t af) 1349 { 1350 struct node_host *n; 1351 struct pf_addr *m; 1352 1353 if (h->addr.type != PF_ADDR_DYNIFTL) 1354 return (NULL); 1355 1356 if ((n = calloc(1, sizeof(*n))) == NULL) 1357 return (NULL); 1358 bcopy(h, n, sizeof(*n)); 1359 n->ifname = NULL; 1360 n->next = NULL; 1361 n->tail = NULL; 1362 1363 /* fix up netmask */ 1364 m = &n->addr.v.a.mask; 1365 if (af == AF_INET && unmask(m, AF_INET6) > 32) 1366 set_ipmask(n, 32); 1367 1368 return (n); 1369 } 1370 1371 /* interface lookup routines */ 1372 1373 static struct node_host *iftab; 1374 1375 /* 1376 * Retrieve the list of groups this interface is a member of and make sure 1377 * each group is in the group map. 1378 */ 1379 static void 1380 ifa_add_groups_to_map(char *ifa_name) 1381 { 1382 int s, len; 1383 struct ifgroupreq ifgr; 1384 struct ifg_req *ifg; 1385 1386 s = get_query_socket(); 1387 1388 /* Get size of group list for this interface */ 1389 memset(&ifgr, 0, sizeof(ifgr)); 1390 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1391 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1392 err(1, "SIOCGIFGROUP"); 1393 1394 /* Retrieve group list for this interface */ 1395 len = ifgr.ifgr_len; 1396 ifgr.ifgr_groups = 1397 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1398 sizeof(struct ifg_req)); 1399 if (ifgr.ifgr_groups == NULL) 1400 err(1, "calloc"); 1401 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1402 err(1, "SIOCGIFGROUP"); 1403 1404 ifg = ifgr.ifgr_groups; 1405 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1406 len -= sizeof(struct ifg_req); 1407 if (strcmp(ifg->ifgrq_group, "all")) { 1408 ENTRY item; 1409 ENTRY *ret_item; 1410 int *answer; 1411 1412 item.key = ifg->ifgrq_group; 1413 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1414 struct ifgroupreq ifgr2; 1415 1416 /* Don't know the answer yet */ 1417 if ((answer = malloc(sizeof(int))) == NULL) 1418 err(1, "malloc"); 1419 1420 bzero(&ifgr2, sizeof(ifgr2)); 1421 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1422 sizeof(ifgr2.ifgr_name)); 1423 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1424 *answer = ifgr2.ifgr_len; 1425 else 1426 *answer = 0; 1427 1428 item.key = strdup(ifg->ifgrq_group); 1429 item.data = answer; 1430 if (hsearch_r(item, ENTER, &ret_item, 1431 &isgroup_map) == 0) 1432 err(1, "interface group query response" 1433 " map insert"); 1434 } 1435 } 1436 } 1437 free(ifgr.ifgr_groups); 1438 } 1439 1440 void 1441 ifa_load(void) 1442 { 1443 struct ifaddrs *ifap, *ifa; 1444 struct node_host *n = NULL, *h = NULL; 1445 1446 if (getifaddrs(&ifap) < 0) 1447 err(1, "getifaddrs"); 1448 1449 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1450 if (!(ifa->ifa_addr->sa_family == AF_INET || 1451 ifa->ifa_addr->sa_family == AF_INET6 || 1452 ifa->ifa_addr->sa_family == AF_LINK)) 1453 continue; 1454 n = calloc(1, sizeof(struct node_host)); 1455 if (n == NULL) 1456 err(1, "address: calloc"); 1457 n->af = ifa->ifa_addr->sa_family; 1458 n->ifa_flags = ifa->ifa_flags; 1459 #ifdef __KAME__ 1460 if (n->af == AF_INET6 && 1461 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1462 ifa->ifa_addr)->sin6_addr) && 1463 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1464 0) { 1465 struct sockaddr_in6 *sin6; 1466 1467 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1468 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1469 sin6->sin6_addr.s6_addr[3]; 1470 sin6->sin6_addr.s6_addr[2] = 0; 1471 sin6->sin6_addr.s6_addr[3] = 0; 1472 } 1473 #endif 1474 n->ifindex = 0; 1475 if (n->af == AF_INET) { 1476 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1477 ifa->ifa_addr)->sin_addr.s_addr, 1478 sizeof(struct in_addr)); 1479 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1480 ifa->ifa_netmask)->sin_addr.s_addr, 1481 sizeof(struct in_addr)); 1482 if (ifa->ifa_broadaddr != NULL) 1483 memcpy(&n->bcast, &((struct sockaddr_in *) 1484 ifa->ifa_broadaddr)->sin_addr.s_addr, 1485 sizeof(struct in_addr)); 1486 if (ifa->ifa_dstaddr != NULL) 1487 memcpy(&n->peer, &((struct sockaddr_in *) 1488 ifa->ifa_dstaddr)->sin_addr.s_addr, 1489 sizeof(struct in_addr)); 1490 } else if (n->af == AF_INET6) { 1491 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1492 ifa->ifa_addr)->sin6_addr.s6_addr, 1493 sizeof(struct in6_addr)); 1494 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1495 ifa->ifa_netmask)->sin6_addr.s6_addr, 1496 sizeof(struct in6_addr)); 1497 if (ifa->ifa_broadaddr != NULL) 1498 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1499 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1500 sizeof(struct in6_addr)); 1501 if (ifa->ifa_dstaddr != NULL) 1502 memcpy(&n->peer, &((struct sockaddr_in6 *) 1503 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1504 sizeof(struct in6_addr)); 1505 n->ifindex = ((struct sockaddr_in6 *) 1506 ifa->ifa_addr)->sin6_scope_id; 1507 } else if (n->af == AF_LINK) { 1508 ifa_add_groups_to_map(ifa->ifa_name); 1509 } 1510 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1511 err(1, "ifa_load: strdup"); 1512 n->next = NULL; 1513 n->tail = n; 1514 if (h == NULL) 1515 h = n; 1516 else { 1517 h->tail->next = n; 1518 h->tail = n; 1519 } 1520 } 1521 1522 iftab = h; 1523 freeifaddrs(ifap); 1524 } 1525 1526 static int 1527 get_socket_domain(void) 1528 { 1529 int sdom; 1530 1531 sdom = AF_UNSPEC; 1532 #ifdef WITH_INET6 1533 if (sdom == AF_UNSPEC && feature_present("inet6")) 1534 sdom = AF_INET6; 1535 #endif 1536 #ifdef WITH_INET 1537 if (sdom == AF_UNSPEC && feature_present("inet")) 1538 sdom = AF_INET; 1539 #endif 1540 if (sdom == AF_UNSPEC) 1541 sdom = AF_LINK; 1542 1543 return (sdom); 1544 } 1545 1546 int 1547 get_query_socket(void) 1548 { 1549 static int s = -1; 1550 1551 if (s == -1) { 1552 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1553 err(1, "socket"); 1554 } 1555 1556 return (s); 1557 } 1558 1559 /* 1560 * Returns the response len if the name is a group, otherwise returns 0. 1561 */ 1562 static int 1563 is_a_group(char *name) 1564 { 1565 ENTRY item; 1566 ENTRY *ret_item; 1567 1568 item.key = name; 1569 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1570 return (0); 1571 1572 return (*(int *)ret_item->data); 1573 } 1574 1575 struct node_host * 1576 ifa_exists(char *ifa_name) 1577 { 1578 struct node_host *n; 1579 1580 if (iftab == NULL) 1581 ifa_load(); 1582 1583 /* check whether this is a group */ 1584 if (is_a_group(ifa_name)) { 1585 /* fake a node_host */ 1586 if ((n = calloc(1, sizeof(*n))) == NULL) 1587 err(1, "calloc"); 1588 if ((n->ifname = strdup(ifa_name)) == NULL) 1589 err(1, "strdup"); 1590 return (n); 1591 } 1592 1593 for (n = iftab; n; n = n->next) { 1594 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1595 return (n); 1596 } 1597 1598 return (NULL); 1599 } 1600 1601 struct node_host * 1602 ifa_grouplookup(char *ifa_name, int flags) 1603 { 1604 struct ifg_req *ifg; 1605 struct ifgroupreq ifgr; 1606 int s, len; 1607 struct node_host *n, *h = NULL; 1608 1609 s = get_query_socket(); 1610 len = is_a_group(ifa_name); 1611 if (len == 0) 1612 return (NULL); 1613 bzero(&ifgr, sizeof(ifgr)); 1614 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1615 ifgr.ifgr_len = len; 1616 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1617 err(1, "calloc"); 1618 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1619 err(1, "SIOCGIFGMEMB"); 1620 1621 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1622 ifg++) { 1623 len -= sizeof(struct ifg_req); 1624 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1625 continue; 1626 if (h == NULL) 1627 h = n; 1628 else { 1629 h->tail->next = n; 1630 h->tail = n->tail; 1631 } 1632 } 1633 free(ifgr.ifgr_groups); 1634 1635 return (h); 1636 } 1637 1638 struct node_host * 1639 ifa_lookup(char *ifa_name, int flags) 1640 { 1641 struct node_host *p = NULL, *h = NULL, *n = NULL; 1642 int got4 = 0, got6 = 0; 1643 const char *last_if = NULL; 1644 1645 /* first load iftab and isgroup_map */ 1646 if (iftab == NULL) 1647 ifa_load(); 1648 1649 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1650 return (h); 1651 1652 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1653 ifa_name = NULL; 1654 1655 for (p = iftab; p; p = p->next) { 1656 if (ifa_skip_if(ifa_name, p)) 1657 continue; 1658 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1659 continue; 1660 if ((flags & PFI_AFLAG_BROADCAST) && 1661 !(p->ifa_flags & IFF_BROADCAST)) 1662 continue; 1663 if ((flags & PFI_AFLAG_PEER) && 1664 !(p->ifa_flags & IFF_POINTOPOINT)) 1665 continue; 1666 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1667 continue; 1668 if (last_if == NULL || strcmp(last_if, p->ifname)) 1669 got4 = got6 = 0; 1670 last_if = p->ifname; 1671 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1672 continue; 1673 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1674 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1675 continue; 1676 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1677 continue; 1678 if (p->af == AF_INET) 1679 got4 = 1; 1680 else 1681 got6 = 1; 1682 n = calloc(1, sizeof(struct node_host)); 1683 if (n == NULL) 1684 err(1, "address: calloc"); 1685 n->af = p->af; 1686 if (flags & PFI_AFLAG_BROADCAST) 1687 memcpy(&n->addr.v.a.addr, &p->bcast, 1688 sizeof(struct pf_addr)); 1689 else if (flags & PFI_AFLAG_PEER) 1690 memcpy(&n->addr.v.a.addr, &p->peer, 1691 sizeof(struct pf_addr)); 1692 else 1693 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1694 sizeof(struct pf_addr)); 1695 if (flags & PFI_AFLAG_NETWORK) 1696 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1697 else { 1698 if (n->af == AF_INET) { 1699 if (p->ifa_flags & IFF_LOOPBACK && 1700 p->ifa_flags & IFF_LINK1) 1701 memcpy(&n->addr.v.a.mask, 1702 &p->addr.v.a.mask, 1703 sizeof(struct pf_addr)); 1704 else 1705 set_ipmask(n, 32); 1706 } else 1707 set_ipmask(n, 128); 1708 } 1709 n->ifindex = p->ifindex; 1710 n->ifname = strdup(p->ifname); 1711 1712 n->next = NULL; 1713 n->tail = n; 1714 if (h == NULL) 1715 h = n; 1716 else { 1717 h->tail->next = n; 1718 h->tail = n; 1719 } 1720 } 1721 return (h); 1722 } 1723 1724 int 1725 ifa_skip_if(const char *filter, struct node_host *p) 1726 { 1727 int n; 1728 1729 if (p->af != AF_INET && p->af != AF_INET6) 1730 return (1); 1731 if (filter == NULL || !*filter) 1732 return (0); 1733 if (!strcmp(p->ifname, filter)) 1734 return (0); /* exact match */ 1735 n = strlen(filter); 1736 if (n < 1 || n >= IFNAMSIZ) 1737 return (1); /* sanity check */ 1738 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1739 return (1); /* only do exact match in that case */ 1740 if (strncmp(p->ifname, filter, n)) 1741 return (1); /* prefix doesn't match */ 1742 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1743 } 1744 1745 1746 struct node_host * 1747 host(const char *s) 1748 { 1749 struct node_host *h = NULL; 1750 int mask, v4mask, v6mask, cont = 1; 1751 char *p, *q, *ps; 1752 1753 if ((p = strrchr(s, '/')) != NULL) { 1754 mask = strtol(p+1, &q, 0); 1755 if (!q || *q || mask > 128 || q == (p+1)) { 1756 fprintf(stderr, "invalid netmask '%s'\n", p); 1757 return (NULL); 1758 } 1759 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1760 err(1, "host: malloc"); 1761 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1762 v4mask = v6mask = mask; 1763 } else { 1764 if ((ps = strdup(s)) == NULL) 1765 err(1, "host: strdup"); 1766 v4mask = 32; 1767 v6mask = 128; 1768 mask = -1; 1769 } 1770 1771 /* IPv4 address? */ 1772 if (cont && (h = host_v4(s, mask)) != NULL) 1773 cont = 0; 1774 1775 /* IPv6 address? */ 1776 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1777 cont = 0; 1778 1779 /* interface with this name exists? */ 1780 /* expensive with thousands of interfaces - prioritze IPv4/6 check */ 1781 if (cont && (h = host_if(ps, mask, &cont)) != NULL) 1782 cont = 0; 1783 1784 /* dns lookup */ 1785 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1786 cont = 0; 1787 free(ps); 1788 1789 if (h == NULL || cont == 1) { 1790 fprintf(stderr, "no IP address found for %s\n", s); 1791 return (NULL); 1792 } 1793 return (h); 1794 } 1795 1796 struct node_host * 1797 host_if(const char *s, int mask, int *cont) 1798 { 1799 struct node_host *n, *h = NULL; 1800 char *p, *ps; 1801 int flags = 0; 1802 1803 if ((ps = strdup(s)) == NULL) 1804 err(1, "host_if: strdup"); 1805 while ((p = strrchr(ps, ':')) != NULL) { 1806 if (!strcmp(p+1, "network")) 1807 flags |= PFI_AFLAG_NETWORK; 1808 else if (!strcmp(p+1, "broadcast")) 1809 flags |= PFI_AFLAG_BROADCAST; 1810 else if (!strcmp(p+1, "peer")) 1811 flags |= PFI_AFLAG_PEER; 1812 else if (!strcmp(p+1, "0")) 1813 flags |= PFI_AFLAG_NOALIAS; 1814 else { 1815 free(ps); 1816 return (NULL); 1817 } 1818 *p = '\0'; 1819 *cont = 0; 1820 } 1821 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1822 fprintf(stderr, "illegal combination of interface modifiers\n"); 1823 free(ps); 1824 return (NULL); 1825 } 1826 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1827 fprintf(stderr, "network or broadcast lookup, but " 1828 "extra netmask given\n"); 1829 free(ps); 1830 return (NULL); 1831 } 1832 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1833 /* interface with this name exists */ 1834 h = ifa_lookup(ps, flags); 1835 for (n = h; n != NULL && mask > -1; n = n->next) 1836 set_ipmask(n, mask); 1837 } 1838 1839 free(ps); 1840 return (h); 1841 } 1842 1843 struct node_host * 1844 host_v4(const char *s, int mask) 1845 { 1846 struct node_host *h = NULL; 1847 struct in_addr ina; 1848 int bits = 32; 1849 1850 memset(&ina, 0, sizeof(struct in_addr)); 1851 if (strrchr(s, '/') != NULL) { 1852 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1853 return (NULL); 1854 } else { 1855 if (inet_pton(AF_INET, s, &ina) != 1) 1856 return (NULL); 1857 } 1858 1859 h = calloc(1, sizeof(struct node_host)); 1860 if (h == NULL) 1861 err(1, "address: calloc"); 1862 h->ifname = NULL; 1863 h->af = AF_INET; 1864 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1865 set_ipmask(h, bits); 1866 h->next = NULL; 1867 h->tail = h; 1868 1869 return (h); 1870 } 1871 1872 struct node_host * 1873 host_v6(const char *s, int mask) 1874 { 1875 struct addrinfo hints, *res; 1876 struct node_host *h = NULL; 1877 1878 memset(&hints, 0, sizeof(hints)); 1879 hints.ai_family = AF_INET6; 1880 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1881 hints.ai_flags = AI_NUMERICHOST; 1882 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1883 h = calloc(1, sizeof(struct node_host)); 1884 if (h == NULL) 1885 err(1, "address: calloc"); 1886 h->ifname = NULL; 1887 h->af = AF_INET6; 1888 memcpy(&h->addr.v.a.addr, 1889 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1890 sizeof(h->addr.v.a.addr)); 1891 h->ifindex = 1892 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1893 set_ipmask(h, mask); 1894 freeaddrinfo(res); 1895 h->next = NULL; 1896 h->tail = h; 1897 } 1898 1899 return (h); 1900 } 1901 1902 struct node_host * 1903 host_dns(const char *s, int v4mask, int v6mask) 1904 { 1905 struct addrinfo hints, *res0, *res; 1906 struct node_host *n, *h = NULL; 1907 int error, noalias = 0; 1908 int got4 = 0, got6 = 0; 1909 char *p, *ps; 1910 1911 if ((ps = strdup(s)) == NULL) 1912 err(1, "host_dns: strdup"); 1913 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1914 noalias = 1; 1915 *p = '\0'; 1916 } 1917 memset(&hints, 0, sizeof(hints)); 1918 hints.ai_family = PF_UNSPEC; 1919 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1920 error = getaddrinfo(ps, NULL, &hints, &res0); 1921 if (error) { 1922 free(ps); 1923 return (h); 1924 } 1925 1926 for (res = res0; res; res = res->ai_next) { 1927 if (res->ai_family != AF_INET && 1928 res->ai_family != AF_INET6) 1929 continue; 1930 if (noalias) { 1931 if (res->ai_family == AF_INET) { 1932 if (got4) 1933 continue; 1934 got4 = 1; 1935 } else { 1936 if (got6) 1937 continue; 1938 got6 = 1; 1939 } 1940 } 1941 n = calloc(1, sizeof(struct node_host)); 1942 if (n == NULL) 1943 err(1, "host_dns: calloc"); 1944 n->ifname = NULL; 1945 n->af = res->ai_family; 1946 if (res->ai_family == AF_INET) { 1947 memcpy(&n->addr.v.a.addr, 1948 &((struct sockaddr_in *) 1949 res->ai_addr)->sin_addr.s_addr, 1950 sizeof(struct in_addr)); 1951 set_ipmask(n, v4mask); 1952 } else { 1953 memcpy(&n->addr.v.a.addr, 1954 &((struct sockaddr_in6 *) 1955 res->ai_addr)->sin6_addr.s6_addr, 1956 sizeof(struct in6_addr)); 1957 n->ifindex = 1958 ((struct sockaddr_in6 *) 1959 res->ai_addr)->sin6_scope_id; 1960 set_ipmask(n, v6mask); 1961 } 1962 n->next = NULL; 1963 n->tail = n; 1964 if (h == NULL) 1965 h = n; 1966 else { 1967 h->tail->next = n; 1968 h->tail = n; 1969 } 1970 } 1971 freeaddrinfo(res0); 1972 free(ps); 1973 1974 return (h); 1975 } 1976 1977 /* 1978 * convert a hostname to a list of addresses and put them in the given buffer. 1979 * test: 1980 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1981 */ 1982 int 1983 append_addr(struct pfr_buffer *b, char *s, int test) 1984 { 1985 char *r; 1986 struct node_host *h, *n; 1987 int rv, not = 0; 1988 1989 for (r = s; *r == '!'; r++) 1990 not = !not; 1991 if ((n = host(r)) == NULL) { 1992 errno = 0; 1993 return (-1); 1994 } 1995 rv = append_addr_host(b, n, test, not); 1996 do { 1997 h = n; 1998 n = n->next; 1999 free(h); 2000 } while (n != NULL); 2001 return (rv); 2002 } 2003 2004 /* 2005 * same as previous function, but with a pre-parsed input and the ability 2006 * to "negate" the result. Does not free the node_host list. 2007 * not: 2008 * setting it to 1 is equivalent to adding "!" in front of parameter s. 2009 */ 2010 int 2011 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 2012 { 2013 int bits; 2014 struct pfr_addr addr; 2015 2016 do { 2017 bzero(&addr, sizeof(addr)); 2018 addr.pfra_not = n->not ^ not; 2019 addr.pfra_af = n->af; 2020 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 2021 switch (n->af) { 2022 case AF_INET: 2023 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 2024 bits = 32; 2025 break; 2026 case AF_INET6: 2027 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 2028 sizeof(struct in6_addr)); 2029 bits = 128; 2030 break; 2031 default: 2032 errno = EINVAL; 2033 return (-1); 2034 } 2035 if ((test && (not || addr.pfra_net != bits)) || 2036 addr.pfra_net > bits) { 2037 errno = EINVAL; 2038 return (-1); 2039 } 2040 if (pfr_buf_add(b, &addr)) 2041 return (-1); 2042 } while ((n = n->next) != NULL); 2043 2044 return (0); 2045 } 2046 2047 int 2048 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 2049 { 2050 struct pfioc_trans_e trans; 2051 2052 bzero(&trans, sizeof(trans)); 2053 trans.rs_num = rs_num; 2054 if (strlcpy(trans.anchor, anchor, 2055 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 2056 errx(1, "pfctl_add_trans: strlcpy"); 2057 2058 return pfr_buf_add(buf, &trans); 2059 } 2060 2061 u_int32_t 2062 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 2063 { 2064 struct pfioc_trans_e *p; 2065 2066 PFRB_FOREACH(p, buf) 2067 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 2068 return (p->ticket); 2069 errx(1, "pfctl_get_ticket: assertion failed"); 2070 } 2071 2072 int 2073 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 2074 { 2075 struct pfioc_trans trans; 2076 2077 bzero(&trans, sizeof(trans)); 2078 trans.size = buf->pfrb_size - from; 2079 trans.esize = sizeof(struct pfioc_trans_e); 2080 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 2081 return ioctl(dev, cmd, &trans); 2082 } 2083