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