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 void 503 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts) 504 { 505 struct pfctl_status_counter *c; 506 char statline[80], *running; 507 time_t runtime; 508 int i; 509 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 510 static const char hex[] = "0123456789abcdef"; 511 512 runtime = time(NULL) - s->since; 513 running = s->running ? "Enabled" : "Disabled"; 514 515 if (s->since) { 516 unsigned int sec, min, hrs, day = runtime; 517 518 sec = day % 60; 519 day /= 60; 520 min = day % 60; 521 day /= 60; 522 hrs = day % 24; 523 day /= 24; 524 snprintf(statline, sizeof(statline), 525 "Status: %s for %u days %.2u:%.2u:%.2u", 526 running, day, hrs, min, sec); 527 } else 528 snprintf(statline, sizeof(statline), "Status: %s", running); 529 printf("%-44s", statline); 530 switch (s->debug) { 531 case PF_DEBUG_NONE: 532 printf("%15s\n\n", "Debug: None"); 533 break; 534 case PF_DEBUG_URGENT: 535 printf("%15s\n\n", "Debug: Urgent"); 536 break; 537 case PF_DEBUG_MISC: 538 printf("%15s\n\n", "Debug: Misc"); 539 break; 540 case PF_DEBUG_NOISY: 541 printf("%15s\n\n", "Debug: Loud"); 542 break; 543 } 544 545 if (opts & PF_OPT_VERBOSE) { 546 printf("Hostid: 0x%08x\n", s->hostid); 547 548 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 549 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 550 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 551 } 552 buf[i + i] = '\0'; 553 printf("Checksum: 0x%s\n\n", buf); 554 } 555 556 if (s->ifname[0] != 0) { 557 printf("Interface Stats for %-16s %5s %16s\n", 558 s->ifname, "IPv4", "IPv6"); 559 printf(" %-25s %14llu %16llu\n", "Bytes In", 560 (unsigned long long)s->bcounters[0][0], 561 (unsigned long long)s->bcounters[1][0]); 562 printf(" %-25s %14llu %16llu\n", "Bytes Out", 563 (unsigned long long)s->bcounters[0][1], 564 (unsigned long long)s->bcounters[1][1]); 565 printf(" Packets In\n"); 566 printf(" %-23s %14llu %16llu\n", "Passed", 567 (unsigned long long)s->pcounters[0][0][PF_PASS], 568 (unsigned long long)s->pcounters[1][0][PF_PASS]); 569 printf(" %-23s %14llu %16llu\n", "Blocked", 570 (unsigned long long)s->pcounters[0][0][PF_DROP], 571 (unsigned long long)s->pcounters[1][0][PF_DROP]); 572 printf(" Packets Out\n"); 573 printf(" %-23s %14llu %16llu\n", "Passed", 574 (unsigned long long)s->pcounters[0][1][PF_PASS], 575 (unsigned long long)s->pcounters[1][1][PF_PASS]); 576 printf(" %-23s %14llu %16llu\n\n", "Blocked", 577 (unsigned long long)s->pcounters[0][1][PF_DROP], 578 (unsigned long long)s->pcounters[1][1][PF_DROP]); 579 } 580 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 581 printf(" %-25s %14ju %14s\n", "current entries", s->states, ""); 582 TAILQ_FOREACH(c, &s->fcounters, entry) { 583 printf(" %-25s %14ju ", c->name, c->counter); 584 if (runtime > 0) 585 printf("%14.1f/s\n", 586 (double)c->counter / (double)runtime); 587 else 588 printf("%14s\n", ""); 589 } 590 if (opts & PF_OPT_VERBOSE) { 591 printf("Source Tracking Table\n"); 592 printf(" %-25s %14ju %14s\n", "current entries", 593 s->src_nodes, ""); 594 TAILQ_FOREACH(c, &s->scounters, entry) { 595 printf(" %-25s %14ju ", c->name, c->counter); 596 if (runtime > 0) 597 printf("%14.1f/s\n", 598 (double)c->counter / (double)runtime); 599 else 600 printf("%14s\n", ""); 601 } 602 } 603 printf("Counters\n"); 604 TAILQ_FOREACH(c, &s->counters, entry) { 605 printf(" %-25s %14ju ", c->name, c->counter); 606 if (runtime > 0) 607 printf("%14.1f/s\n", 608 (double)c->counter / (double)runtime); 609 else 610 printf("%14s\n", ""); 611 } 612 if (opts & PF_OPT_VERBOSE) { 613 printf("Limit Counters\n"); 614 TAILQ_FOREACH(c, &s->lcounters, entry) { 615 printf(" %-25s %14ju ", c->name, c->counter); 616 if (runtime > 0) 617 printf("%14.1f/s\n", 618 (double)c->counter / (double)runtime); 619 else 620 printf("%14s\n", ""); 621 } 622 623 printf("Syncookies\n"); 624 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE); 625 printf(" %-25s %s\n", "mode", 626 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]); 627 printf(" %-25s %s\n", "active", 628 s->syncookies_active ? "active" : "inactive"); 629 if (opts & PF_OPT_VERBOSE2) { 630 printf(" %-25s %d %%\n", "highwater", cookies->highwater); 631 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater); 632 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states); 633 } 634 printf("Reassemble %24s %s\n", 635 s->reass & PF_REASS_ENABLED ? "yes" : "no", 636 s->reass & PF_REASS_NODF ? "no-df" : "" 637 ); 638 } 639 } 640 641 void 642 print_running(struct pfctl_status *status) 643 { 644 printf("%s\n", status->running ? "Enabled" : "Disabled"); 645 } 646 647 void 648 print_src_node(struct pfctl_src_node *sn, int opts) 649 { 650 struct pf_addr_wrap aw; 651 uint64_t min, sec; 652 653 memset(&aw, 0, sizeof(aw)); 654 if (sn->af == AF_INET) 655 aw.v.a.mask.addr32[0] = 0xffffffff; 656 else 657 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 658 659 aw.v.a.addr = sn->addr; 660 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 661 printf(" -> "); 662 aw.v.a.addr = sn->raddr; 663 print_addr(&aw, sn->naf ? sn->naf : sn->af, opts & PF_OPT_VERBOSE2); 664 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 665 sn->conn, sn->conn_rate.count / 1000, 666 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 667 if (opts & PF_OPT_VERBOSE) { 668 sec = sn->creation % 60; 669 sn->creation /= 60; 670 min = sn->creation % 60; 671 sn->creation /= 60; 672 printf(" age %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64, 673 sn->creation, min, sec); 674 if (sn->states == 0) { 675 sec = sn->expire % 60; 676 sn->expire /= 60; 677 min = sn->expire % 60; 678 sn->expire /= 60; 679 printf(", expires in %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64, 680 sn->expire, min, sec); 681 } 682 printf(", %" PRIu64 " pkts, %" PRIu64 " bytes", 683 sn->packets[0] + sn->packets[1], 684 sn->bytes[0] + sn->bytes[1]); 685 switch (sn->ruletype) { 686 case PF_NAT: 687 if (sn->rule != -1) 688 printf(", nat rule %u", sn->rule); 689 break; 690 case PF_RDR: 691 if (sn->rule != -1) 692 printf(", rdr rule %u", sn->rule); 693 break; 694 case PF_PASS: 695 case PF_MATCH: 696 if (sn->rule != -1) 697 printf(", filter rule %u", sn->rule); 698 break; 699 } 700 printf("\n"); 701 } 702 } 703 704 static void 705 print_eth_addr(const struct pfctl_eth_addr *a) 706 { 707 int i, masklen = ETHER_ADDR_LEN * 8; 708 bool seen_unset = false; 709 710 for (i = 0; i < ETHER_ADDR_LEN; i++) { 711 if (a->addr[i] != 0) 712 break; 713 } 714 715 /* Unset, so don't print anything. */ 716 if (i == ETHER_ADDR_LEN) 717 return; 718 719 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "", 720 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4], 721 a->addr[5]); 722 723 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) { 724 bool isset = a->mask[i / 8] & (1 << i % 8); 725 726 if (! seen_unset) { 727 if (isset) 728 continue; 729 seen_unset = true; 730 masklen = i; 731 } else { 732 /* Not actually a continuous mask, so print the whole 733 * thing. */ 734 if (isset) 735 break; 736 continue; 737 } 738 } 739 740 if (masklen == (ETHER_ADDR_LEN * 8)) 741 return; 742 743 if (i == (ETHER_ADDR_LEN * 8)) { 744 printf("/%d", masklen); 745 return; 746 } 747 748 printf("&%02x:%02x:%02x:%02x:%02x:%02x", 749 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4], 750 a->mask[5]); 751 } 752 753 void 754 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call, 755 int rule_numbers) 756 { 757 static const char *actiontypes[] = { "pass", "block", "", "", "", "", 758 "", "", "", "", "", "", "match" }; 759 760 int i; 761 762 if (rule_numbers) 763 printf("@%u ", r->nr); 764 765 printf("ether "); 766 if (anchor_call[0]) { 767 if (anchor_call[0] == '_') { 768 printf("anchor"); 769 } else 770 printf("anchor \"%s\"", anchor_call); 771 } else { 772 printf("%s", actiontypes[r->action]); 773 } 774 if (r->direction == PF_IN) 775 printf(" in"); 776 else if (r->direction == PF_OUT) 777 printf(" out"); 778 779 if (r->quick) 780 printf(" quick"); 781 if (r->ifname[0]) { 782 if (r->ifnot) 783 printf(" on ! %s", r->ifname); 784 else 785 printf(" on %s", r->ifname); 786 } 787 if (r->bridge_to[0]) 788 printf(" bridge-to %s", r->bridge_to); 789 if (r->proto) 790 printf(" proto 0x%04x", r->proto); 791 792 if (r->src.isset) { 793 printf(" from "); 794 print_eth_addr(&r->src); 795 } 796 if (r->dst.isset) { 797 printf(" to "); 798 print_eth_addr(&r->dst); 799 } 800 printf(" l3"); 801 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst, 802 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0, 803 0, 0); 804 805 i = 0; 806 while (r->label[i][0]) 807 printf(" label \"%s\"", r->label[i++]); 808 if (r->ridentifier) 809 printf(" ridentifier %u", r->ridentifier); 810 811 if (r->qname[0]) 812 printf(" queue %s", r->qname); 813 if (r->tagname[0]) 814 printf(" tag %s", r->tagname); 815 if (r->match_tagname[0]) { 816 if (r->match_tag_not) 817 printf(" !"); 818 printf(" tagged %s", r->match_tagname); 819 } 820 if (r->dnpipe) 821 printf(" %s %d", 822 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 823 r->dnpipe); 824 } 825 826 void 827 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric) 828 { 829 static const char *actiontypes[] = { "pass", "block", "scrub", 830 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr", 831 "", "", "match"}; 832 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 833 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 834 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 835 int i, ropts; 836 char *p; 837 838 if (verbose) 839 printf("@%d ", r->nr); 840 if (r->action == PF_MATCH) 841 printf("match"); 842 else if (r->action > PF_NORDR) 843 printf("action(%d)", r->action); 844 else if (anchor_call[0]) { 845 p = strrchr(anchor_call, '/'); 846 if (p ? p[1] == '_' : anchor_call[0] == '_') 847 printf("%s", anchortypes[r->action]); 848 else 849 printf("%s \"%s\"", anchortypes[r->action], 850 anchor_call); 851 } else { 852 printf("%s", actiontypes[r->action]); 853 if (r->natpass) 854 printf(" pass"); 855 } 856 if (r->action == PF_DROP) { 857 if (r->rule_flag & PFRULE_RETURN) 858 printf(" return"); 859 else if (r->rule_flag & PFRULE_RETURNRST) { 860 if (!r->return_ttl) 861 printf(" return-rst"); 862 else 863 printf(" return-rst(ttl %d)", r->return_ttl); 864 } else if (r->rule_flag & PFRULE_RETURNICMP) { 865 const struct icmpcodeent *ic, *ic6; 866 867 ic = geticmpcodebynumber(r->return_icmp >> 8, 868 r->return_icmp & 255, AF_INET); 869 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 870 r->return_icmp6 & 255, AF_INET6); 871 872 switch (r->af) { 873 case AF_INET: 874 printf(" return-icmp"); 875 if (ic == NULL) 876 printf("(%u)", r->return_icmp & 255); 877 else 878 printf("(%s)", ic->name); 879 break; 880 case AF_INET6: 881 printf(" return-icmp6"); 882 if (ic6 == NULL) 883 printf("(%u)", r->return_icmp6 & 255); 884 else 885 printf("(%s)", ic6->name); 886 break; 887 default: 888 printf(" return-icmp"); 889 if (ic == NULL) 890 printf("(%u, ", r->return_icmp & 255); 891 else 892 printf("(%s, ", ic->name); 893 if (ic6 == NULL) 894 printf("%u)", r->return_icmp6 & 255); 895 else 896 printf("%s)", ic6->name); 897 break; 898 } 899 } else 900 printf(" drop"); 901 } 902 if (r->direction == PF_IN) 903 printf(" in"); 904 else if (r->direction == PF_OUT) 905 printf(" out"); 906 if (r->log) { 907 printf(" log"); 908 if (r->log & ~PF_LOG || r->logif) { 909 int count = 0; 910 911 printf(" ("); 912 if (r->log & PF_LOG_ALL) 913 printf("%sall", count++ ? ", " : ""); 914 if (r->log & PF_LOG_MATCHES) 915 printf("%smatches", count++ ? ", " : ""); 916 if (r->log & PF_LOG_SOCKET_LOOKUP) 917 printf("%suser", count++ ? ", " : ""); 918 if (r->logif) 919 printf("%sto pflog%u", count++ ? ", " : "", 920 r->logif); 921 printf(")"); 922 } 923 } 924 if (r->quick) 925 printf(" quick"); 926 if (r->ifname[0]) { 927 if (r->ifnot) 928 printf(" on ! %s", r->ifname); 929 else 930 printf(" on %s", r->ifname); 931 } 932 if (r->rt) { 933 if (r->rt == PF_ROUTETO) 934 printf(" route-to"); 935 else if (r->rt == PF_REPLYTO) 936 printf(" reply-to"); 937 else if (r->rt == PF_DUPTO) 938 printf(" dup-to"); 939 printf(" "); 940 print_pool(&r->rdr, 0, 0, r->af, PF_PASS); 941 print_pool(&r->route, 0, 0, 942 r->rule_flag & PFRULE_AFTO && r->rt != PF_REPLYTO ? r->naf : r->af, 943 PF_PASS); 944 } 945 if (r->af) { 946 if (r->af == AF_INET) 947 printf(" inet"); 948 else 949 printf(" inet6"); 950 } 951 if (r->proto) { 952 const char *protoname; 953 954 if ((protoname = pfctl_proto2name(r->proto)) != NULL) 955 printf(" proto %s", protoname); 956 else 957 printf(" proto %u", r->proto); 958 } 959 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 960 verbose, numeric); 961 if (r->rcv_ifname[0]) 962 printf(" received-on %s", r->rcv_ifname); 963 if (r->uid.op) 964 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 965 UID_MAX); 966 if (r->gid.op) 967 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 968 GID_MAX); 969 if (r->flags || r->flagset) { 970 printf(" flags "); 971 print_flags(r->flags); 972 printf("/"); 973 print_flags(r->flagset); 974 } else if ((r->action == PF_PASS || r->action == PF_MATCH) && 975 (!r->proto || r->proto == IPPROTO_TCP) && 976 !(r->rule_flag & PFRULE_FRAGMENT) && 977 !anchor_call[0] && r->keep_state) 978 printf(" flags any"); 979 if (r->type) { 980 const struct icmptypeent *it; 981 982 it = geticmptypebynumber(r->type-1, r->af); 983 if (r->af != AF_INET6) 984 printf(" icmp-type"); 985 else 986 printf(" icmp6-type"); 987 if (it != NULL) 988 printf(" %s", it->name); 989 else 990 printf(" %u", r->type-1); 991 if (r->code) { 992 const struct icmpcodeent *ic; 993 994 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 995 if (ic != NULL) 996 printf(" code %s", ic->name); 997 else 998 printf(" code %u", r->code-1); 999 } 1000 } 1001 if (r->tos) 1002 printf(" tos 0x%2.2x", r->tos); 1003 if (r->prio) 1004 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 1005 if (r->scrub_flags & PFSTATE_SETMASK) { 1006 char *comma = ""; 1007 printf(" set ("); 1008 if (r->scrub_flags & PFSTATE_SETPRIO) { 1009 if (r->set_prio[0] == r->set_prio[1]) 1010 printf("%s prio %u", comma, r->set_prio[0]); 1011 else 1012 printf("%s prio(%u, %u)", comma, r->set_prio[0], 1013 r->set_prio[1]); 1014 comma = ","; 1015 } 1016 if (r->scrub_flags & PFSTATE_SETTOS) { 1017 printf("%s tos 0x%2.2x", comma, r->set_tos); 1018 comma = ","; 1019 } 1020 printf(" )"); 1021 } 1022 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 1023 printf(" no state"); 1024 else if (r->keep_state == PF_STATE_NORMAL) 1025 printf(" keep state"); 1026 else if (r->keep_state == PF_STATE_MODULATE) 1027 printf(" modulate state"); 1028 else if (r->keep_state == PF_STATE_SYNPROXY) 1029 printf(" synproxy state"); 1030 if (r->prob) { 1031 char buf[20]; 1032 1033 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 1034 for (i = strlen(buf)-1; i > 0; i--) { 1035 if (buf[i] == '0') 1036 buf[i] = '\0'; 1037 else { 1038 if (buf[i] == '.') 1039 buf[i] = '\0'; 1040 break; 1041 } 1042 } 1043 printf(" probability %s%%", buf); 1044 } 1045 ropts = 0; 1046 if (r->max_states || r->max_src_nodes || r->max_src_states) 1047 ropts = 1; 1048 if (r->rule_flag & PFRULE_NOSYNC) 1049 ropts = 1; 1050 if (r->rule_flag & PFRULE_SRCTRACK) 1051 ropts = 1; 1052 if (r->rule_flag & PFRULE_IFBOUND) 1053 ropts = 1; 1054 if (r->rule_flag & PFRULE_STATESLOPPY) 1055 ropts = 1; 1056 if (r->rule_flag & PFRULE_PFLOW) 1057 ropts = 1; 1058 for (i = 0; !ropts && i < PFTM_MAX; ++i) 1059 if (r->timeout[i]) 1060 ropts = 1; 1061 if (ropts) { 1062 printf(" ("); 1063 if (r->max_states) { 1064 printf("max %u", r->max_states); 1065 ropts = 0; 1066 } 1067 if (r->rule_flag & PFRULE_NOSYNC) { 1068 if (!ropts) 1069 printf(", "); 1070 printf("no-sync"); 1071 ropts = 0; 1072 } 1073 if (r->rule_flag & PFRULE_SRCTRACK) { 1074 if (!ropts) 1075 printf(", "); 1076 printf("source-track"); 1077 if (r->rule_flag & PFRULE_RULESRCTRACK) 1078 printf(" rule"); 1079 else 1080 printf(" global"); 1081 ropts = 0; 1082 } 1083 if (r->max_src_states) { 1084 if (!ropts) 1085 printf(", "); 1086 printf("max-src-states %u", r->max_src_states); 1087 ropts = 0; 1088 } 1089 if (r->max_src_conn) { 1090 if (!ropts) 1091 printf(", "); 1092 printf("max-src-conn %u", r->max_src_conn); 1093 ropts = 0; 1094 } 1095 if (r->max_src_conn_rate.limit) { 1096 if (!ropts) 1097 printf(", "); 1098 printf("max-src-conn-rate %u/%u", 1099 r->max_src_conn_rate.limit, 1100 r->max_src_conn_rate.seconds); 1101 ropts = 0; 1102 } 1103 if (r->max_src_nodes) { 1104 if (!ropts) 1105 printf(", "); 1106 printf("max-src-nodes %u", r->max_src_nodes); 1107 ropts = 0; 1108 } 1109 if (r->overload_tblname[0]) { 1110 if (!ropts) 1111 printf(", "); 1112 printf("overload <%s>", r->overload_tblname); 1113 if (r->flush) 1114 printf(" flush"); 1115 if (r->flush & PF_FLUSH_GLOBAL) 1116 printf(" global"); 1117 } 1118 if (r->rule_flag & PFRULE_IFBOUND) { 1119 if (!ropts) 1120 printf(", "); 1121 printf("if-bound"); 1122 ropts = 0; 1123 } 1124 if (r->rule_flag & PFRULE_STATESLOPPY) { 1125 if (!ropts) 1126 printf(", "); 1127 printf("sloppy"); 1128 ropts = 0; 1129 } 1130 if (r->rule_flag & PFRULE_PFLOW) { 1131 if (!ropts) 1132 printf(", "); 1133 printf("pflow"); 1134 ropts = 0; 1135 } 1136 for (i = 0; i < PFTM_MAX; ++i) 1137 if (r->timeout[i]) { 1138 int j; 1139 1140 if (!ropts) 1141 printf(", "); 1142 ropts = 0; 1143 for (j = 0; pf_timeouts[j].name != NULL; 1144 ++j) 1145 if (pf_timeouts[j].timeout == i) 1146 break; 1147 printf("%s %u", pf_timeouts[j].name == NULL ? 1148 "inv.timeout" : pf_timeouts[j].name, 1149 r->timeout[i]); 1150 } 1151 printf(")"); 1152 } 1153 if (r->allow_opts) 1154 printf(" allow-opts"); 1155 if (r->rule_flag & PFRULE_FRAGMENT) 1156 printf(" fragment"); 1157 if (r->action == PF_SCRUB) { 1158 /* Scrub flags for old-style scrub. */ 1159 if (r->rule_flag & PFRULE_NODF) 1160 printf(" no-df"); 1161 if (r->rule_flag & PFRULE_RANDOMID) 1162 printf(" random-id"); 1163 if (r->min_ttl) 1164 printf(" min-ttl %d", r->min_ttl); 1165 if (r->max_mss) 1166 printf(" max-mss %d", r->max_mss); 1167 if (r->rule_flag & PFRULE_SET_TOS) 1168 printf(" set-tos 0x%2.2x", r->set_tos); 1169 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1170 printf(" reassemble tcp"); 1171 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */ 1172 printf(" fragment %sreassemble", 1173 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : ""); 1174 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) { 1175 /* Scrub actions on normal rules. */ 1176 printf(" scrub("); 1177 if (r->scrub_flags & PFSTATE_NODF) 1178 printf(" no-df"); 1179 if (r->scrub_flags & PFSTATE_RANDOMID) 1180 printf(" random-id"); 1181 if (r->min_ttl) 1182 printf(" min-ttl %d", r->min_ttl); 1183 if (r->scrub_flags & PFSTATE_SETTOS) 1184 printf(" set-tos 0x%2.2x", r->set_tos); 1185 if (r->scrub_flags & PFSTATE_SCRUB_TCP) 1186 printf(" reassemble tcp"); 1187 if (r->max_mss) 1188 printf(" max-mss %d", r->max_mss); 1189 printf(")"); 1190 } 1191 i = 0; 1192 while (r->label[i][0]) 1193 printf(" label \"%s\"", r->label[i++]); 1194 if (r->ridentifier) 1195 printf(" ridentifier %u", r->ridentifier); 1196 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */ 1197 if (r->dnrpipe) 1198 printf(" %s(%d, %d)", 1199 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1200 r->dnpipe, r->dnrpipe); 1201 else if (r->dnpipe) 1202 printf(" %s %d", 1203 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1204 r->dnpipe); 1205 if (r->qname[0] && r->pqname[0]) 1206 printf(" queue(%s, %s)", r->qname, r->pqname); 1207 else if (r->qname[0]) 1208 printf(" queue %s", r->qname); 1209 if (r->tagname[0]) 1210 printf(" tag %s", r->tagname); 1211 if (r->match_tagname[0]) { 1212 if (r->match_tag_not) 1213 printf(" !"); 1214 printf(" tagged %s", r->match_tagname); 1215 } 1216 if (r->rtableid != -1) 1217 printf(" rtable %u", r->rtableid); 1218 if (r->divert.port) { 1219 #ifdef __FreeBSD__ 1220 printf(" divert-to %u", ntohs(r->divert.port)); 1221 #else 1222 if (PF_AZERO(&r->divert.addr, r->af)) { 1223 printf(" divert-reply"); 1224 } else { 1225 /* XXX cut&paste from print_addr */ 1226 char buf[48]; 1227 1228 printf(" divert-to "); 1229 if (inet_ntop(r->af, &r->divert.addr, buf, 1230 sizeof(buf)) == NULL) 1231 printf("?"); 1232 else 1233 printf("%s", buf); 1234 printf(" port %u", ntohs(r->divert.port)); 1235 } 1236 #endif 1237 } 1238 if (!anchor_call[0] && ! TAILQ_EMPTY(&r->nat.list) && 1239 r->rule_flag & PFRULE_AFTO) { 1240 printf(" af-to %s from ", r->naf == AF_INET ? "inet" : "inet6"); 1241 print_pool(&r->nat, r->nat.proxy_port[0], r->nat.proxy_port[1], 1242 r->naf ? r->naf : r->af, PF_NAT); 1243 if (r->rdr.cur != NULL && !TAILQ_EMPTY(&r->rdr.list)) { 1244 printf(" to "); 1245 print_pool(&r->rdr, r->rdr.proxy_port[0], 1246 r->rdr.proxy_port[1], r->naf ? r->naf : r->af, 1247 PF_RDR); 1248 } 1249 } 1250 if (!anchor_call[0] && 1251 (r->action == PF_NAT || r->action == PF_BINAT || 1252 r->action == PF_RDR)) { 1253 printf(" -> "); 1254 print_pool(&r->rdr, r->rdr.proxy_port[0], 1255 r->rdr.proxy_port[1], r->af, r->action); 1256 } 1257 } 1258 1259 void 1260 print_tabledef(const char *name, int flags, int addrs, 1261 struct node_tinithead *nodes) 1262 { 1263 struct node_tinit *ti, *nti; 1264 struct node_host *h; 1265 1266 printf("table <%s>", name); 1267 if (flags & PFR_TFLAG_CONST) 1268 printf(" const"); 1269 if (flags & PFR_TFLAG_PERSIST) 1270 printf(" persist"); 1271 if (flags & PFR_TFLAG_COUNTERS) 1272 printf(" counters"); 1273 SIMPLEQ_FOREACH(ti, nodes, entries) { 1274 if (ti->file) { 1275 printf(" file \"%s\"", ti->file); 1276 continue; 1277 } 1278 printf(" {"); 1279 for (;;) { 1280 for (h = ti->host; h != NULL; h = h->next) { 1281 printf(h->not ? " !" : " "); 1282 print_addr(&h->addr, h->af, 0); 1283 } 1284 nti = SIMPLEQ_NEXT(ti, entries); 1285 if (nti != NULL && nti->file == NULL) 1286 ti = nti; /* merge lists */ 1287 else 1288 break; 1289 } 1290 printf(" }"); 1291 } 1292 if (addrs && SIMPLEQ_EMPTY(nodes)) 1293 printf(" { }"); 1294 printf("\n"); 1295 } 1296 1297 int 1298 parse_flags(char *s) 1299 { 1300 char *p, *q; 1301 uint16_t f = 0; 1302 1303 for (p = s; *p; p++) { 1304 if ((q = strchr(tcpflags, *p)) == NULL) 1305 return -1; 1306 else 1307 f |= 1 << (q - tcpflags); 1308 } 1309 return (f ? f : TH_FLAGS); 1310 } 1311 1312 void 1313 set_ipmask(struct node_host *h, u_int8_t b) 1314 { 1315 struct pf_addr *m, *n; 1316 int i, j = 0; 1317 1318 m = &h->addr.v.a.mask; 1319 memset(m, 0, sizeof(*m)); 1320 1321 while (b >= 32) { 1322 m->addr32[j++] = 0xffffffff; 1323 b -= 32; 1324 } 1325 for (i = 31; i > 31-b; --i) 1326 m->addr32[j] |= (1 << i); 1327 if (b) 1328 m->addr32[j] = htonl(m->addr32[j]); 1329 1330 /* Mask off bits of the address that will never be used. */ 1331 n = &h->addr.v.a.addr; 1332 if (h->addr.type == PF_ADDR_ADDRMASK) 1333 for (i = 0; i < 4; i++) 1334 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1335 } 1336 1337 int 1338 check_netmask(struct node_host *h, sa_family_t af) 1339 { 1340 struct node_host *n = NULL; 1341 struct pf_addr *m; 1342 1343 for (n = h; n != NULL; n = n->next) { 1344 if (h->addr.type == PF_ADDR_TABLE) 1345 continue; 1346 m = &h->addr.v.a.mask; 1347 /* netmasks > 32 bit are invalid on v4 */ 1348 if (af == AF_INET && 1349 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1350 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1351 unmask(m, AF_INET6)); 1352 return (1); 1353 } 1354 } 1355 return (0); 1356 } 1357 1358 struct node_host * 1359 gen_dynnode(struct node_host *h, sa_family_t af) 1360 { 1361 struct node_host *n; 1362 struct pf_addr *m; 1363 1364 if (h->addr.type != PF_ADDR_DYNIFTL) 1365 return (NULL); 1366 1367 if ((n = calloc(1, sizeof(*n))) == NULL) 1368 return (NULL); 1369 bcopy(h, n, sizeof(*n)); 1370 n->ifname = NULL; 1371 n->next = NULL; 1372 n->tail = NULL; 1373 1374 /* fix up netmask */ 1375 m = &n->addr.v.a.mask; 1376 if (af == AF_INET && unmask(m, AF_INET6) > 32) 1377 set_ipmask(n, 32); 1378 1379 return (n); 1380 } 1381 1382 /* interface lookup routines */ 1383 1384 static struct node_host *iftab; 1385 1386 /* 1387 * Retrieve the list of groups this interface is a member of and make sure 1388 * each group is in the group map. 1389 */ 1390 static void 1391 ifa_add_groups_to_map(char *ifa_name) 1392 { 1393 int s, len; 1394 struct ifgroupreq ifgr; 1395 struct ifg_req *ifg; 1396 1397 s = get_query_socket(); 1398 1399 /* Get size of group list for this interface */ 1400 memset(&ifgr, 0, sizeof(ifgr)); 1401 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1402 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1403 err(1, "SIOCGIFGROUP"); 1404 1405 /* Retrieve group list for this interface */ 1406 len = ifgr.ifgr_len; 1407 ifgr.ifgr_groups = 1408 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1409 sizeof(struct ifg_req)); 1410 if (ifgr.ifgr_groups == NULL) 1411 err(1, "calloc"); 1412 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1413 err(1, "SIOCGIFGROUP"); 1414 1415 ifg = ifgr.ifgr_groups; 1416 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1417 len -= sizeof(struct ifg_req); 1418 if (strcmp(ifg->ifgrq_group, "all")) { 1419 ENTRY item; 1420 ENTRY *ret_item; 1421 int *answer; 1422 1423 item.key = ifg->ifgrq_group; 1424 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1425 struct ifgroupreq ifgr2; 1426 1427 /* Don't know the answer yet */ 1428 if ((answer = malloc(sizeof(int))) == NULL) 1429 err(1, "malloc"); 1430 1431 bzero(&ifgr2, sizeof(ifgr2)); 1432 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1433 sizeof(ifgr2.ifgr_name)); 1434 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1435 *answer = ifgr2.ifgr_len; 1436 else 1437 *answer = 0; 1438 1439 item.key = strdup(ifg->ifgrq_group); 1440 item.data = answer; 1441 if (hsearch_r(item, ENTER, &ret_item, 1442 &isgroup_map) == 0) 1443 err(1, "interface group query response" 1444 " map insert"); 1445 } 1446 } 1447 } 1448 free(ifgr.ifgr_groups); 1449 } 1450 1451 void 1452 ifa_load(void) 1453 { 1454 struct ifaddrs *ifap, *ifa; 1455 struct node_host *n = NULL, *h = NULL; 1456 1457 if (getifaddrs(&ifap) < 0) 1458 err(1, "getifaddrs"); 1459 1460 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1461 if (!(ifa->ifa_addr->sa_family == AF_INET || 1462 ifa->ifa_addr->sa_family == AF_INET6 || 1463 ifa->ifa_addr->sa_family == AF_LINK)) 1464 continue; 1465 n = calloc(1, sizeof(struct node_host)); 1466 if (n == NULL) 1467 err(1, "address: calloc"); 1468 n->af = ifa->ifa_addr->sa_family; 1469 n->ifa_flags = ifa->ifa_flags; 1470 #ifdef __KAME__ 1471 if (n->af == AF_INET6 && 1472 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1473 ifa->ifa_addr)->sin6_addr) && 1474 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1475 0) { 1476 struct sockaddr_in6 *sin6; 1477 1478 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1479 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1480 sin6->sin6_addr.s6_addr[3]; 1481 sin6->sin6_addr.s6_addr[2] = 0; 1482 sin6->sin6_addr.s6_addr[3] = 0; 1483 } 1484 #endif 1485 n->ifindex = 0; 1486 if (n->af == AF_INET) { 1487 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1488 ifa->ifa_addr)->sin_addr.s_addr, 1489 sizeof(struct in_addr)); 1490 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1491 ifa->ifa_netmask)->sin_addr.s_addr, 1492 sizeof(struct in_addr)); 1493 if (ifa->ifa_broadaddr != NULL) 1494 memcpy(&n->bcast, &((struct sockaddr_in *) 1495 ifa->ifa_broadaddr)->sin_addr.s_addr, 1496 sizeof(struct in_addr)); 1497 if (ifa->ifa_dstaddr != NULL) 1498 memcpy(&n->peer, &((struct sockaddr_in *) 1499 ifa->ifa_dstaddr)->sin_addr.s_addr, 1500 sizeof(struct in_addr)); 1501 } else if (n->af == AF_INET6) { 1502 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1503 ifa->ifa_addr)->sin6_addr.s6_addr, 1504 sizeof(struct in6_addr)); 1505 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1506 ifa->ifa_netmask)->sin6_addr.s6_addr, 1507 sizeof(struct in6_addr)); 1508 if (ifa->ifa_broadaddr != NULL) 1509 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1510 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1511 sizeof(struct in6_addr)); 1512 if (ifa->ifa_dstaddr != NULL) 1513 memcpy(&n->peer, &((struct sockaddr_in6 *) 1514 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1515 sizeof(struct in6_addr)); 1516 n->ifindex = ((struct sockaddr_in6 *) 1517 ifa->ifa_addr)->sin6_scope_id; 1518 } else if (n->af == AF_LINK) { 1519 ifa_add_groups_to_map(ifa->ifa_name); 1520 } 1521 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1522 err(1, "ifa_load: strdup"); 1523 n->next = NULL; 1524 n->tail = n; 1525 if (h == NULL) 1526 h = n; 1527 else { 1528 h->tail->next = n; 1529 h->tail = n; 1530 } 1531 } 1532 1533 iftab = h; 1534 freeifaddrs(ifap); 1535 } 1536 1537 static int 1538 get_socket_domain(void) 1539 { 1540 int sdom; 1541 1542 sdom = AF_UNSPEC; 1543 #ifdef WITH_INET6 1544 if (sdom == AF_UNSPEC && feature_present("inet6")) 1545 sdom = AF_INET6; 1546 #endif 1547 #ifdef WITH_INET 1548 if (sdom == AF_UNSPEC && feature_present("inet")) 1549 sdom = AF_INET; 1550 #endif 1551 if (sdom == AF_UNSPEC) 1552 sdom = AF_LINK; 1553 1554 return (sdom); 1555 } 1556 1557 int 1558 get_query_socket(void) 1559 { 1560 static int s = -1; 1561 1562 if (s == -1) { 1563 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1564 err(1, "socket"); 1565 } 1566 1567 return (s); 1568 } 1569 1570 /* 1571 * Returns the response len if the name is a group, otherwise returns 0. 1572 */ 1573 static int 1574 is_a_group(char *name) 1575 { 1576 ENTRY item; 1577 ENTRY *ret_item; 1578 1579 item.key = name; 1580 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1581 return (0); 1582 1583 return (*(int *)ret_item->data); 1584 } 1585 1586 struct node_host * 1587 ifa_exists(char *ifa_name) 1588 { 1589 struct node_host *n; 1590 1591 if (iftab == NULL) 1592 ifa_load(); 1593 1594 /* check whether this is a group */ 1595 if (is_a_group(ifa_name)) { 1596 /* fake a node_host */ 1597 if ((n = calloc(1, sizeof(*n))) == NULL) 1598 err(1, "calloc"); 1599 if ((n->ifname = strdup(ifa_name)) == NULL) 1600 err(1, "strdup"); 1601 return (n); 1602 } 1603 1604 for (n = iftab; n; n = n->next) { 1605 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1606 return (n); 1607 } 1608 1609 return (NULL); 1610 } 1611 1612 struct node_host * 1613 ifa_grouplookup(char *ifa_name, int flags) 1614 { 1615 struct ifg_req *ifg; 1616 struct ifgroupreq ifgr; 1617 int s, len; 1618 struct node_host *n, *h = NULL; 1619 1620 s = get_query_socket(); 1621 len = is_a_group(ifa_name); 1622 if (len == 0) 1623 return (NULL); 1624 bzero(&ifgr, sizeof(ifgr)); 1625 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1626 ifgr.ifgr_len = len; 1627 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1628 err(1, "calloc"); 1629 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1630 err(1, "SIOCGIFGMEMB"); 1631 1632 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1633 ifg++) { 1634 len -= sizeof(struct ifg_req); 1635 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1636 continue; 1637 if (h == NULL) 1638 h = n; 1639 else { 1640 h->tail->next = n; 1641 h->tail = n->tail; 1642 } 1643 } 1644 free(ifgr.ifgr_groups); 1645 1646 return (h); 1647 } 1648 1649 struct node_host * 1650 ifa_lookup(char *ifa_name, int flags) 1651 { 1652 struct node_host *p = NULL, *h = NULL, *n = NULL; 1653 int got4 = 0, got6 = 0; 1654 const char *last_if = NULL; 1655 1656 /* first load iftab and isgroup_map */ 1657 if (iftab == NULL) 1658 ifa_load(); 1659 1660 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1661 return (h); 1662 1663 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1664 ifa_name = NULL; 1665 1666 for (p = iftab; p; p = p->next) { 1667 if (ifa_skip_if(ifa_name, p)) 1668 continue; 1669 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1670 continue; 1671 if ((flags & PFI_AFLAG_BROADCAST) && 1672 !(p->ifa_flags & IFF_BROADCAST)) 1673 continue; 1674 if ((flags & PFI_AFLAG_PEER) && 1675 !(p->ifa_flags & IFF_POINTOPOINT)) 1676 continue; 1677 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1678 continue; 1679 if (last_if == NULL || strcmp(last_if, p->ifname)) 1680 got4 = got6 = 0; 1681 last_if = p->ifname; 1682 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1683 continue; 1684 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1685 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1686 continue; 1687 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1688 continue; 1689 if (p->af == AF_INET) 1690 got4 = 1; 1691 else 1692 got6 = 1; 1693 n = calloc(1, sizeof(struct node_host)); 1694 if (n == NULL) 1695 err(1, "address: calloc"); 1696 n->af = p->af; 1697 if (flags & PFI_AFLAG_BROADCAST) 1698 memcpy(&n->addr.v.a.addr, &p->bcast, 1699 sizeof(struct pf_addr)); 1700 else if (flags & PFI_AFLAG_PEER) 1701 memcpy(&n->addr.v.a.addr, &p->peer, 1702 sizeof(struct pf_addr)); 1703 else 1704 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1705 sizeof(struct pf_addr)); 1706 if (flags & PFI_AFLAG_NETWORK) 1707 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1708 else { 1709 if (n->af == AF_INET) { 1710 if (p->ifa_flags & IFF_LOOPBACK && 1711 p->ifa_flags & IFF_LINK1) 1712 memcpy(&n->addr.v.a.mask, 1713 &p->addr.v.a.mask, 1714 sizeof(struct pf_addr)); 1715 else 1716 set_ipmask(n, 32); 1717 } else 1718 set_ipmask(n, 128); 1719 } 1720 n->ifindex = p->ifindex; 1721 n->ifname = strdup(p->ifname); 1722 1723 n->next = NULL; 1724 n->tail = n; 1725 if (h == NULL) 1726 h = n; 1727 else { 1728 h->tail->next = n; 1729 h->tail = n; 1730 } 1731 } 1732 return (h); 1733 } 1734 1735 int 1736 ifa_skip_if(const char *filter, struct node_host *p) 1737 { 1738 int n; 1739 1740 if (p->af != AF_INET && p->af != AF_INET6) 1741 return (1); 1742 if (filter == NULL || !*filter) 1743 return (0); 1744 if (!strcmp(p->ifname, filter)) 1745 return (0); /* exact match */ 1746 n = strlen(filter); 1747 if (n < 1 || n >= IFNAMSIZ) 1748 return (1); /* sanity check */ 1749 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1750 return (1); /* only do exact match in that case */ 1751 if (strncmp(p->ifname, filter, n)) 1752 return (1); /* prefix doesn't match */ 1753 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1754 } 1755 1756 1757 struct node_host * 1758 host(const char *s) 1759 { 1760 struct node_host *h = NULL; 1761 int mask, v4mask, v6mask, cont = 1; 1762 char *p, *q, *ps; 1763 1764 if ((p = strrchr(s, '/')) != NULL) { 1765 mask = strtol(p+1, &q, 0); 1766 if (!q || *q || mask > 128 || q == (p+1)) { 1767 fprintf(stderr, "invalid netmask '%s'\n", p); 1768 return (NULL); 1769 } 1770 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1771 err(1, "host: malloc"); 1772 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1773 v4mask = v6mask = mask; 1774 } else { 1775 if ((ps = strdup(s)) == NULL) 1776 err(1, "host: strdup"); 1777 v4mask = 32; 1778 v6mask = 128; 1779 mask = -1; 1780 } 1781 1782 /* IPv4 address? */ 1783 if (cont && (h = host_v4(s, mask)) != NULL) 1784 cont = 0; 1785 1786 /* IPv6 address? */ 1787 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1788 cont = 0; 1789 1790 /* interface with this name exists? */ 1791 /* expensive with thousands of interfaces - prioritze IPv4/6 check */ 1792 if (cont && (h = host_if(ps, mask, &cont)) != NULL) 1793 cont = 0; 1794 1795 /* dns lookup */ 1796 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1797 cont = 0; 1798 free(ps); 1799 1800 if (h == NULL || cont == 1) { 1801 fprintf(stderr, "no IP address found for %s\n", s); 1802 return (NULL); 1803 } 1804 return (h); 1805 } 1806 1807 struct node_host * 1808 host_if(const char *s, int mask, int *cont) 1809 { 1810 struct node_host *n, *h = NULL; 1811 char *p, *ps; 1812 int flags = 0; 1813 1814 if ((ps = strdup(s)) == NULL) 1815 err(1, "host_if: strdup"); 1816 while ((p = strrchr(ps, ':')) != NULL) { 1817 if (!strcmp(p+1, "network")) 1818 flags |= PFI_AFLAG_NETWORK; 1819 else if (!strcmp(p+1, "broadcast")) 1820 flags |= PFI_AFLAG_BROADCAST; 1821 else if (!strcmp(p+1, "peer")) 1822 flags |= PFI_AFLAG_PEER; 1823 else if (!strcmp(p+1, "0")) 1824 flags |= PFI_AFLAG_NOALIAS; 1825 else { 1826 free(ps); 1827 return (NULL); 1828 } 1829 *p = '\0'; 1830 *cont = 0; 1831 } 1832 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1833 fprintf(stderr, "illegal combination of interface modifiers\n"); 1834 free(ps); 1835 return (NULL); 1836 } 1837 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1838 fprintf(stderr, "network or broadcast lookup, but " 1839 "extra netmask given\n"); 1840 free(ps); 1841 return (NULL); 1842 } 1843 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1844 /* interface with this name exists */ 1845 h = ifa_lookup(ps, flags); 1846 for (n = h; n != NULL && mask > -1; n = n->next) 1847 set_ipmask(n, mask); 1848 } 1849 1850 free(ps); 1851 return (h); 1852 } 1853 1854 struct node_host * 1855 host_v4(const char *s, int mask) 1856 { 1857 struct node_host *h = NULL; 1858 struct in_addr ina; 1859 int bits = 32; 1860 1861 memset(&ina, 0, sizeof(struct in_addr)); 1862 if (strrchr(s, '/') != NULL) { 1863 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1864 return (NULL); 1865 } else { 1866 if (inet_pton(AF_INET, s, &ina) != 1) 1867 return (NULL); 1868 } 1869 1870 h = calloc(1, sizeof(struct node_host)); 1871 if (h == NULL) 1872 err(1, "address: calloc"); 1873 h->ifname = NULL; 1874 h->af = AF_INET; 1875 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1876 set_ipmask(h, bits); 1877 h->next = NULL; 1878 h->tail = h; 1879 1880 return (h); 1881 } 1882 1883 struct node_host * 1884 host_v6(const char *s, int mask) 1885 { 1886 struct addrinfo hints, *res; 1887 struct node_host *h = NULL; 1888 1889 memset(&hints, 0, sizeof(hints)); 1890 hints.ai_family = AF_INET6; 1891 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1892 hints.ai_flags = AI_NUMERICHOST; 1893 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1894 h = calloc(1, sizeof(struct node_host)); 1895 if (h == NULL) 1896 err(1, "address: calloc"); 1897 h->ifname = NULL; 1898 h->af = AF_INET6; 1899 memcpy(&h->addr.v.a.addr, 1900 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1901 sizeof(h->addr.v.a.addr)); 1902 h->ifindex = 1903 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1904 set_ipmask(h, mask); 1905 freeaddrinfo(res); 1906 h->next = NULL; 1907 h->tail = h; 1908 } 1909 1910 return (h); 1911 } 1912 1913 struct node_host * 1914 host_dns(const char *s, int v4mask, int v6mask) 1915 { 1916 struct addrinfo hints, *res0, *res; 1917 struct node_host *n, *h = NULL; 1918 int error, noalias = 0; 1919 int got4 = 0, got6 = 0; 1920 char *p, *ps; 1921 1922 if ((ps = strdup(s)) == NULL) 1923 err(1, "host_dns: strdup"); 1924 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1925 noalias = 1; 1926 *p = '\0'; 1927 } 1928 memset(&hints, 0, sizeof(hints)); 1929 hints.ai_family = PF_UNSPEC; 1930 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1931 error = getaddrinfo(ps, NULL, &hints, &res0); 1932 if (error) { 1933 free(ps); 1934 return (h); 1935 } 1936 1937 for (res = res0; res; res = res->ai_next) { 1938 if (res->ai_family != AF_INET && 1939 res->ai_family != AF_INET6) 1940 continue; 1941 if (noalias) { 1942 if (res->ai_family == AF_INET) { 1943 if (got4) 1944 continue; 1945 got4 = 1; 1946 } else { 1947 if (got6) 1948 continue; 1949 got6 = 1; 1950 } 1951 } 1952 n = calloc(1, sizeof(struct node_host)); 1953 if (n == NULL) 1954 err(1, "host_dns: calloc"); 1955 n->ifname = NULL; 1956 n->af = res->ai_family; 1957 if (res->ai_family == AF_INET) { 1958 memcpy(&n->addr.v.a.addr, 1959 &((struct sockaddr_in *) 1960 res->ai_addr)->sin_addr.s_addr, 1961 sizeof(struct in_addr)); 1962 set_ipmask(n, v4mask); 1963 } else { 1964 memcpy(&n->addr.v.a.addr, 1965 &((struct sockaddr_in6 *) 1966 res->ai_addr)->sin6_addr.s6_addr, 1967 sizeof(struct in6_addr)); 1968 n->ifindex = 1969 ((struct sockaddr_in6 *) 1970 res->ai_addr)->sin6_scope_id; 1971 set_ipmask(n, v6mask); 1972 } 1973 n->next = NULL; 1974 n->tail = n; 1975 if (h == NULL) 1976 h = n; 1977 else { 1978 h->tail->next = n; 1979 h->tail = n; 1980 } 1981 } 1982 freeaddrinfo(res0); 1983 free(ps); 1984 1985 return (h); 1986 } 1987 1988 /* 1989 * convert a hostname to a list of addresses and put them in the given buffer. 1990 * test: 1991 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1992 */ 1993 int 1994 append_addr(struct pfr_buffer *b, char *s, int test) 1995 { 1996 char *r; 1997 struct node_host *h, *n; 1998 int rv, not = 0; 1999 2000 for (r = s; *r == '!'; r++) 2001 not = !not; 2002 if ((n = host(r)) == NULL) { 2003 errno = 0; 2004 return (-1); 2005 } 2006 rv = append_addr_host(b, n, test, not); 2007 do { 2008 h = n; 2009 n = n->next; 2010 free(h); 2011 } while (n != NULL); 2012 return (rv); 2013 } 2014 2015 /* 2016 * same as previous function, but with a pre-parsed input and the ability 2017 * to "negate" the result. Does not free the node_host list. 2018 * not: 2019 * setting it to 1 is equivalent to adding "!" in front of parameter s. 2020 */ 2021 int 2022 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 2023 { 2024 int bits; 2025 struct pfr_addr addr; 2026 2027 do { 2028 bzero(&addr, sizeof(addr)); 2029 addr.pfra_not = n->not ^ not; 2030 addr.pfra_af = n->af; 2031 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 2032 switch (n->af) { 2033 case AF_INET: 2034 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 2035 bits = 32; 2036 break; 2037 case AF_INET6: 2038 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 2039 sizeof(struct in6_addr)); 2040 bits = 128; 2041 break; 2042 default: 2043 errno = EINVAL; 2044 return (-1); 2045 } 2046 if ((test && (not || addr.pfra_net != bits)) || 2047 addr.pfra_net > bits) { 2048 errno = EINVAL; 2049 return (-1); 2050 } 2051 if (pfr_buf_add(b, &addr)) 2052 return (-1); 2053 } while ((n = n->next) != NULL); 2054 2055 return (0); 2056 } 2057 2058 int 2059 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 2060 { 2061 struct pfioc_trans_e trans; 2062 2063 bzero(&trans, sizeof(trans)); 2064 trans.rs_num = rs_num; 2065 if (strlcpy(trans.anchor, anchor, 2066 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 2067 errx(1, "pfctl_add_trans: strlcpy"); 2068 2069 return pfr_buf_add(buf, &trans); 2070 } 2071 2072 u_int32_t 2073 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 2074 { 2075 struct pfioc_trans_e *p; 2076 2077 PFRB_FOREACH(p, buf) 2078 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 2079 return (p->ticket); 2080 errx(1, "pfctl_get_ticket: assertion failed"); 2081 } 2082 2083 int 2084 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 2085 { 2086 struct pfioc_trans trans; 2087 2088 bzero(&trans, sizeof(trans)); 2089 trans.size = buf->pfrb_size - from; 2090 trans.esize = sizeof(struct pfioc_trans_e); 2091 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 2092 return ioctl(dev, cmd, &trans); 2093 } 2094