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 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 (u_int8_t); 72 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 73 struct pf_rule_addr *, u_int8_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); 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 = "FSRPAUEW"; 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 { "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 }; 211 212 static struct hsearch_data isgroup_map; 213 214 static __attribute__((constructor)) void 215 pfctl_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 } 224 225 const struct icmptypeent * 226 geticmptypebynumber(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 } 243 244 const struct icmptypeent * 245 geticmptypebyname(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 } 262 263 const struct icmpcodeent * 264 geticmpcodebynumber(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 } 283 284 const struct icmpcodeent * 285 geticmpcodebyname(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 } 304 305 void 306 print_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 } 327 328 void 329 print_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 } 348 349 void 350 print_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 } 362 363 void 364 print_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 } 372 373 void 374 print_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 } 413 414 void 415 print_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 } 493 494 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 495 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 496 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 497 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 498 499 void 500 print_status(struct pf_status *s, struct pfctl_syncookies *cookies, 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 printf("Syncookies\n"); 632 printf(" %-25s %s\n", "mode", 633 cookies->mode == PFCTL_SYNCOOKIES_NEVER ? 634 "never" : "always"); 635 } 636 } 637 638 void 639 print_running(struct pf_status *status) 640 { 641 printf("%s\n", status->running ? "Enabled" : "Disabled"); 642 } 643 644 void 645 print_src_node(struct pf_src_node *sn, int opts) 646 { 647 struct pf_addr_wrap aw; 648 int min, sec; 649 650 memset(&aw, 0, sizeof(aw)); 651 if (sn->af == AF_INET) 652 aw.v.a.mask.addr32[0] = 0xffffffff; 653 else 654 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 655 656 aw.v.a.addr = sn->addr; 657 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 658 printf(" -> "); 659 aw.v.a.addr = sn->raddr; 660 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 661 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 662 sn->conn, sn->conn_rate.count / 1000, 663 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 664 if (opts & PF_OPT_VERBOSE) { 665 sec = sn->creation % 60; 666 sn->creation /= 60; 667 min = sn->creation % 60; 668 sn->creation /= 60; 669 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 670 if (sn->states == 0) { 671 sec = sn->expire % 60; 672 sn->expire /= 60; 673 min = sn->expire % 60; 674 sn->expire /= 60; 675 printf(", expires in %.2u:%.2u:%.2u", 676 sn->expire, min, sec); 677 } 678 printf(", %llu pkts, %llu bytes", 679 #ifdef __FreeBSD__ 680 (unsigned long long)(sn->packets[0] + sn->packets[1]), 681 (unsigned long long)(sn->bytes[0] + sn->bytes[1])); 682 #else 683 sn->packets[0] + sn->packets[1], 684 sn->bytes[0] + sn->bytes[1]); 685 #endif 686 switch (sn->ruletype) { 687 case PF_NAT: 688 if (sn->rule.nr != -1) 689 printf(", nat rule %u", sn->rule.nr); 690 break; 691 case PF_RDR: 692 if (sn->rule.nr != -1) 693 printf(", rdr rule %u", sn->rule.nr); 694 break; 695 case PF_PASS: 696 if (sn->rule.nr != -1) 697 printf(", filter rule %u", sn->rule.nr); 698 break; 699 } 700 printf("\n"); 701 } 702 } 703 704 void 705 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric) 706 { 707 static const char *actiontypes[] = { "pass", "block", "scrub", 708 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" }; 709 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 710 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 711 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 712 int i, opts; 713 714 if (verbose) 715 printf("@%d ", r->nr); 716 if (r->action == PF_MATCH) 717 printf("match"); 718 else if (r->action > PF_NORDR) 719 printf("action(%d)", r->action); 720 else if (anchor_call[0]) { 721 if (anchor_call[0] == '_') { 722 printf("%s", anchortypes[r->action]); 723 } else 724 printf("%s \"%s\"", anchortypes[r->action], 725 anchor_call); 726 } else { 727 printf("%s", actiontypes[r->action]); 728 if (r->natpass) 729 printf(" pass"); 730 } 731 if (r->action == PF_DROP) { 732 if (r->rule_flag & PFRULE_RETURN) 733 printf(" return"); 734 else if (r->rule_flag & PFRULE_RETURNRST) { 735 if (!r->return_ttl) 736 printf(" return-rst"); 737 else 738 printf(" return-rst(ttl %d)", r->return_ttl); 739 } else if (r->rule_flag & PFRULE_RETURNICMP) { 740 const struct icmpcodeent *ic, *ic6; 741 742 ic = geticmpcodebynumber(r->return_icmp >> 8, 743 r->return_icmp & 255, AF_INET); 744 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 745 r->return_icmp6 & 255, AF_INET6); 746 747 switch (r->af) { 748 case AF_INET: 749 printf(" return-icmp"); 750 if (ic == NULL) 751 printf("(%u)", r->return_icmp & 255); 752 else 753 printf("(%s)", ic->name); 754 break; 755 case AF_INET6: 756 printf(" return-icmp6"); 757 if (ic6 == NULL) 758 printf("(%u)", r->return_icmp6 & 255); 759 else 760 printf("(%s)", ic6->name); 761 break; 762 default: 763 printf(" return-icmp"); 764 if (ic == NULL) 765 printf("(%u, ", r->return_icmp & 255); 766 else 767 printf("(%s, ", ic->name); 768 if (ic6 == NULL) 769 printf("%u)", r->return_icmp6 & 255); 770 else 771 printf("%s)", ic6->name); 772 break; 773 } 774 } else 775 printf(" drop"); 776 } 777 if (r->direction == PF_IN) 778 printf(" in"); 779 else if (r->direction == PF_OUT) 780 printf(" out"); 781 if (r->log) { 782 printf(" log"); 783 if (r->log & ~PF_LOG || r->logif) { 784 int count = 0; 785 786 printf(" ("); 787 if (r->log & PF_LOG_ALL) 788 printf("%sall", count++ ? ", " : ""); 789 if (r->log & PF_LOG_SOCKET_LOOKUP) 790 printf("%suser", count++ ? ", " : ""); 791 if (r->logif) 792 printf("%sto pflog%u", count++ ? ", " : "", 793 r->logif); 794 printf(")"); 795 } 796 } 797 if (r->quick) 798 printf(" quick"); 799 if (r->ifname[0]) { 800 if (r->ifnot) 801 printf(" on ! %s", r->ifname); 802 else 803 printf(" on %s", r->ifname); 804 } 805 if (r->rt) { 806 if (r->rt == PF_ROUTETO) 807 printf(" route-to"); 808 else if (r->rt == PF_REPLYTO) 809 printf(" reply-to"); 810 else if (r->rt == PF_DUPTO) 811 printf(" dup-to"); 812 printf(" "); 813 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 814 } 815 if (r->af) { 816 if (r->af == AF_INET) 817 printf(" inet"); 818 else 819 printf(" inet6"); 820 } 821 if (r->proto) { 822 const char *protoname; 823 824 if ((protoname = pfctl_proto2name(r->proto)) != NULL) 825 printf(" proto %s", protoname); 826 else 827 printf(" proto %u", r->proto); 828 } 829 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 830 verbose, numeric); 831 if (r->uid.op) 832 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 833 UID_MAX); 834 if (r->gid.op) 835 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 836 GID_MAX); 837 if (r->flags || r->flagset) { 838 printf(" flags "); 839 print_flags(r->flags); 840 printf("/"); 841 print_flags(r->flagset); 842 } else if (r->action == PF_PASS && 843 (!r->proto || r->proto == IPPROTO_TCP) && 844 !(r->rule_flag & PFRULE_FRAGMENT) && 845 !anchor_call[0] && r->keep_state) 846 printf(" flags any"); 847 if (r->type) { 848 const struct icmptypeent *it; 849 850 it = geticmptypebynumber(r->type-1, r->af); 851 if (r->af != AF_INET6) 852 printf(" icmp-type"); 853 else 854 printf(" icmp6-type"); 855 if (it != NULL) 856 printf(" %s", it->name); 857 else 858 printf(" %u", r->type-1); 859 if (r->code) { 860 const struct icmpcodeent *ic; 861 862 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 863 if (ic != NULL) 864 printf(" code %s", ic->name); 865 else 866 printf(" code %u", r->code-1); 867 } 868 } 869 if (r->tos) 870 printf(" tos 0x%2.2x", r->tos); 871 if (r->prio) 872 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 873 if (r->scrub_flags & PFSTATE_SETMASK) { 874 char *comma = ""; 875 printf(" set ("); 876 if (r->scrub_flags & PFSTATE_SETPRIO) { 877 if (r->set_prio[0] == r->set_prio[1]) 878 printf("%s prio %u", comma, r->set_prio[0]); 879 else 880 printf("%s prio(%u, %u)", comma, r->set_prio[0], 881 r->set_prio[1]); 882 comma = ","; 883 } 884 printf(" )"); 885 } 886 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 887 printf(" no state"); 888 else if (r->keep_state == PF_STATE_NORMAL) 889 printf(" keep state"); 890 else if (r->keep_state == PF_STATE_MODULATE) 891 printf(" modulate state"); 892 else if (r->keep_state == PF_STATE_SYNPROXY) 893 printf(" synproxy state"); 894 if (r->prob) { 895 char buf[20]; 896 897 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 898 for (i = strlen(buf)-1; i > 0; i--) { 899 if (buf[i] == '0') 900 buf[i] = '\0'; 901 else { 902 if (buf[i] == '.') 903 buf[i] = '\0'; 904 break; 905 } 906 } 907 printf(" probability %s%%", buf); 908 } 909 opts = 0; 910 if (r->max_states || r->max_src_nodes || r->max_src_states) 911 opts = 1; 912 if (r->rule_flag & PFRULE_NOSYNC) 913 opts = 1; 914 if (r->rule_flag & PFRULE_SRCTRACK) 915 opts = 1; 916 if (r->rule_flag & PFRULE_IFBOUND) 917 opts = 1; 918 if (r->rule_flag & PFRULE_STATESLOPPY) 919 opts = 1; 920 for (i = 0; !opts && i < PFTM_MAX; ++i) 921 if (r->timeout[i]) 922 opts = 1; 923 if (opts) { 924 printf(" ("); 925 if (r->max_states) { 926 printf("max %u", r->max_states); 927 opts = 0; 928 } 929 if (r->rule_flag & PFRULE_NOSYNC) { 930 if (!opts) 931 printf(", "); 932 printf("no-sync"); 933 opts = 0; 934 } 935 if (r->rule_flag & PFRULE_SRCTRACK) { 936 if (!opts) 937 printf(", "); 938 printf("source-track"); 939 if (r->rule_flag & PFRULE_RULESRCTRACK) 940 printf(" rule"); 941 else 942 printf(" global"); 943 opts = 0; 944 } 945 if (r->max_src_states) { 946 if (!opts) 947 printf(", "); 948 printf("max-src-states %u", r->max_src_states); 949 opts = 0; 950 } 951 if (r->max_src_conn) { 952 if (!opts) 953 printf(", "); 954 printf("max-src-conn %u", r->max_src_conn); 955 opts = 0; 956 } 957 if (r->max_src_conn_rate.limit) { 958 if (!opts) 959 printf(", "); 960 printf("max-src-conn-rate %u/%u", 961 r->max_src_conn_rate.limit, 962 r->max_src_conn_rate.seconds); 963 opts = 0; 964 } 965 if (r->max_src_nodes) { 966 if (!opts) 967 printf(", "); 968 printf("max-src-nodes %u", r->max_src_nodes); 969 opts = 0; 970 } 971 if (r->overload_tblname[0]) { 972 if (!opts) 973 printf(", "); 974 printf("overload <%s>", r->overload_tblname); 975 if (r->flush) 976 printf(" flush"); 977 if (r->flush & PF_FLUSH_GLOBAL) 978 printf(" global"); 979 } 980 if (r->rule_flag & PFRULE_IFBOUND) { 981 if (!opts) 982 printf(", "); 983 printf("if-bound"); 984 opts = 0; 985 } 986 if (r->rule_flag & PFRULE_STATESLOPPY) { 987 if (!opts) 988 printf(", "); 989 printf("sloppy"); 990 opts = 0; 991 } 992 for (i = 0; i < PFTM_MAX; ++i) 993 if (r->timeout[i]) { 994 int j; 995 996 if (!opts) 997 printf(", "); 998 opts = 0; 999 for (j = 0; pf_timeouts[j].name != NULL; 1000 ++j) 1001 if (pf_timeouts[j].timeout == i) 1002 break; 1003 printf("%s %u", pf_timeouts[j].name == NULL ? 1004 "inv.timeout" : pf_timeouts[j].name, 1005 r->timeout[i]); 1006 } 1007 printf(")"); 1008 } 1009 if (r->rule_flag & PFRULE_FRAGMENT) 1010 printf(" fragment"); 1011 if (r->rule_flag & PFRULE_NODF) 1012 printf(" no-df"); 1013 if (r->rule_flag & PFRULE_RANDOMID) 1014 printf(" random-id"); 1015 if (r->min_ttl) 1016 printf(" min-ttl %d", r->min_ttl); 1017 if (r->max_mss) 1018 printf(" max-mss %d", r->max_mss); 1019 if (r->rule_flag & PFRULE_SET_TOS) 1020 printf(" set-tos 0x%2.2x", r->set_tos); 1021 if (r->allow_opts) 1022 printf(" allow-opts"); 1023 if (r->action == PF_SCRUB) { 1024 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1025 printf(" reassemble tcp"); 1026 1027 printf(" fragment reassemble"); 1028 } 1029 i = 0; 1030 while (r->label[i][0]) 1031 printf(" label \"%s\"", r->label[i++]); 1032 if (r->qname[0] && r->pqname[0]) 1033 printf(" queue(%s, %s)", r->qname, r->pqname); 1034 else if (r->qname[0]) 1035 printf(" queue %s", r->qname); 1036 if (r->tagname[0]) 1037 printf(" tag %s", r->tagname); 1038 if (r->match_tagname[0]) { 1039 if (r->match_tag_not) 1040 printf(" !"); 1041 printf(" tagged %s", r->match_tagname); 1042 } 1043 if (r->rtableid != -1) 1044 printf(" rtable %u", r->rtableid); 1045 if (r->divert.port) { 1046 #ifdef __FreeBSD__ 1047 printf(" divert-to %u", ntohs(r->divert.port)); 1048 #else 1049 if (PF_AZERO(&r->divert.addr, r->af)) { 1050 printf(" divert-reply"); 1051 } else { 1052 /* XXX cut&paste from print_addr */ 1053 char buf[48]; 1054 1055 printf(" divert-to "); 1056 if (inet_ntop(r->af, &r->divert.addr, buf, 1057 sizeof(buf)) == NULL) 1058 printf("?"); 1059 else 1060 printf("%s", buf); 1061 printf(" port %u", ntohs(r->divert.port)); 1062 } 1063 #endif 1064 } 1065 if (!anchor_call[0] && (r->action == PF_NAT || 1066 r->action == PF_BINAT || r->action == PF_RDR)) { 1067 printf(" -> "); 1068 print_pool(&r->rpool, r->rpool.proxy_port[0], 1069 r->rpool.proxy_port[1], r->af, r->action); 1070 } 1071 } 1072 1073 void 1074 print_tabledef(const char *name, int flags, int addrs, 1075 struct node_tinithead *nodes) 1076 { 1077 struct node_tinit *ti, *nti; 1078 struct node_host *h; 1079 1080 printf("table <%s>", name); 1081 if (flags & PFR_TFLAG_CONST) 1082 printf(" const"); 1083 if (flags & PFR_TFLAG_PERSIST) 1084 printf(" persist"); 1085 if (flags & PFR_TFLAG_COUNTERS) 1086 printf(" counters"); 1087 SIMPLEQ_FOREACH(ti, nodes, entries) { 1088 if (ti->file) { 1089 printf(" file \"%s\"", ti->file); 1090 continue; 1091 } 1092 printf(" {"); 1093 for (;;) { 1094 for (h = ti->host; h != NULL; h = h->next) { 1095 printf(h->not ? " !" : " "); 1096 print_addr(&h->addr, h->af, 0); 1097 } 1098 nti = SIMPLEQ_NEXT(ti, entries); 1099 if (nti != NULL && nti->file == NULL) 1100 ti = nti; /* merge lists */ 1101 else 1102 break; 1103 } 1104 printf(" }"); 1105 } 1106 if (addrs && SIMPLEQ_EMPTY(nodes)) 1107 printf(" { }"); 1108 printf("\n"); 1109 } 1110 1111 int 1112 parse_flags(char *s) 1113 { 1114 char *p, *q; 1115 u_int8_t f = 0; 1116 1117 for (p = s; *p; p++) { 1118 if ((q = strchr(tcpflags, *p)) == NULL) 1119 return -1; 1120 else 1121 f |= 1 << (q - tcpflags); 1122 } 1123 return (f ? f : PF_TH_ALL); 1124 } 1125 1126 void 1127 set_ipmask(struct node_host *h, u_int8_t b) 1128 { 1129 struct pf_addr *m, *n; 1130 int i, j = 0; 1131 1132 m = &h->addr.v.a.mask; 1133 memset(m, 0, sizeof(*m)); 1134 1135 while (b >= 32) { 1136 m->addr32[j++] = 0xffffffff; 1137 b -= 32; 1138 } 1139 for (i = 31; i > 31-b; --i) 1140 m->addr32[j] |= (1 << i); 1141 if (b) 1142 m->addr32[j] = htonl(m->addr32[j]); 1143 1144 /* Mask off bits of the address that will never be used. */ 1145 n = &h->addr.v.a.addr; 1146 if (h->addr.type == PF_ADDR_ADDRMASK) 1147 for (i = 0; i < 4; i++) 1148 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1149 } 1150 1151 int 1152 check_netmask(struct node_host *h, sa_family_t af) 1153 { 1154 struct node_host *n = NULL; 1155 struct pf_addr *m; 1156 1157 for (n = h; n != NULL; n = n->next) { 1158 if (h->addr.type == PF_ADDR_TABLE) 1159 continue; 1160 m = &h->addr.v.a.mask; 1161 /* fix up netmask for dynaddr */ 1162 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1163 unmask(m, AF_INET6) > 32) 1164 set_ipmask(n, 32); 1165 /* netmasks > 32 bit are invalid on v4 */ 1166 if (af == AF_INET && 1167 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1168 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1169 unmask(m, AF_INET6)); 1170 return (1); 1171 } 1172 } 1173 return (0); 1174 } 1175 1176 /* interface lookup routines */ 1177 1178 static struct node_host *iftab; 1179 1180 /* 1181 * Retrieve the list of groups this interface is a member of and make sure 1182 * each group is in the group map. 1183 */ 1184 static void 1185 ifa_add_groups_to_map(char *ifa_name) 1186 { 1187 int s, len; 1188 struct ifgroupreq ifgr; 1189 struct ifg_req *ifg; 1190 1191 s = get_query_socket(); 1192 1193 /* Get size of group list for this interface */ 1194 memset(&ifgr, 0, sizeof(ifgr)); 1195 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1196 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1197 err(1, "SIOCGIFGROUP"); 1198 1199 /* Retrieve group list for this interface */ 1200 len = ifgr.ifgr_len; 1201 ifgr.ifgr_groups = 1202 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1203 sizeof(struct ifg_req)); 1204 if (ifgr.ifgr_groups == NULL) 1205 err(1, "calloc"); 1206 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1207 err(1, "SIOCGIFGROUP"); 1208 1209 ifg = ifgr.ifgr_groups; 1210 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1211 len -= sizeof(struct ifg_req); 1212 if (strcmp(ifg->ifgrq_group, "all")) { 1213 ENTRY item; 1214 ENTRY *ret_item; 1215 int *answer; 1216 1217 item.key = ifg->ifgrq_group; 1218 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1219 struct ifgroupreq ifgr2; 1220 1221 /* Don't know the answer yet */ 1222 if ((answer = malloc(sizeof(int))) == NULL) 1223 err(1, "malloc"); 1224 1225 bzero(&ifgr2, sizeof(ifgr2)); 1226 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1227 sizeof(ifgr2.ifgr_name)); 1228 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1229 *answer = ifgr2.ifgr_len; 1230 else 1231 *answer = 0; 1232 1233 item.key = strdup(ifg->ifgrq_group); 1234 item.data = answer; 1235 if (hsearch_r(item, ENTER, &ret_item, 1236 &isgroup_map) == 0) 1237 err(1, "interface group query response" 1238 " map insert"); 1239 } 1240 } 1241 } 1242 free(ifgr.ifgr_groups); 1243 } 1244 1245 void 1246 ifa_load(void) 1247 { 1248 struct ifaddrs *ifap, *ifa; 1249 struct node_host *n = NULL, *h = NULL; 1250 1251 if (getifaddrs(&ifap) < 0) 1252 err(1, "getifaddrs"); 1253 1254 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1255 if (!(ifa->ifa_addr->sa_family == AF_INET || 1256 ifa->ifa_addr->sa_family == AF_INET6 || 1257 ifa->ifa_addr->sa_family == AF_LINK)) 1258 continue; 1259 n = calloc(1, sizeof(struct node_host)); 1260 if (n == NULL) 1261 err(1, "address: calloc"); 1262 n->af = ifa->ifa_addr->sa_family; 1263 n->ifa_flags = ifa->ifa_flags; 1264 #ifdef __KAME__ 1265 if (n->af == AF_INET6 && 1266 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1267 ifa->ifa_addr)->sin6_addr) && 1268 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1269 0) { 1270 struct sockaddr_in6 *sin6; 1271 1272 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1273 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1274 sin6->sin6_addr.s6_addr[3]; 1275 sin6->sin6_addr.s6_addr[2] = 0; 1276 sin6->sin6_addr.s6_addr[3] = 0; 1277 } 1278 #endif 1279 n->ifindex = 0; 1280 if (n->af == AF_INET) { 1281 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1282 ifa->ifa_addr)->sin_addr.s_addr, 1283 sizeof(struct in_addr)); 1284 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1285 ifa->ifa_netmask)->sin_addr.s_addr, 1286 sizeof(struct in_addr)); 1287 if (ifa->ifa_broadaddr != NULL) 1288 memcpy(&n->bcast, &((struct sockaddr_in *) 1289 ifa->ifa_broadaddr)->sin_addr.s_addr, 1290 sizeof(struct in_addr)); 1291 if (ifa->ifa_dstaddr != NULL) 1292 memcpy(&n->peer, &((struct sockaddr_in *) 1293 ifa->ifa_dstaddr)->sin_addr.s_addr, 1294 sizeof(struct in_addr)); 1295 } else if (n->af == AF_INET6) { 1296 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1297 ifa->ifa_addr)->sin6_addr.s6_addr, 1298 sizeof(struct in6_addr)); 1299 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1300 ifa->ifa_netmask)->sin6_addr.s6_addr, 1301 sizeof(struct in6_addr)); 1302 if (ifa->ifa_broadaddr != NULL) 1303 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1304 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1305 sizeof(struct in6_addr)); 1306 if (ifa->ifa_dstaddr != NULL) 1307 memcpy(&n->peer, &((struct sockaddr_in6 *) 1308 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1309 sizeof(struct in6_addr)); 1310 n->ifindex = ((struct sockaddr_in6 *) 1311 ifa->ifa_addr)->sin6_scope_id; 1312 } else if (n->af == AF_LINK) { 1313 ifa_add_groups_to_map(ifa->ifa_name); 1314 } 1315 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1316 err(1, "ifa_load: strdup"); 1317 n->next = NULL; 1318 n->tail = n; 1319 if (h == NULL) 1320 h = n; 1321 else { 1322 h->tail->next = n; 1323 h->tail = n; 1324 } 1325 } 1326 1327 iftab = h; 1328 freeifaddrs(ifap); 1329 } 1330 1331 static int 1332 get_socket_domain(void) 1333 { 1334 int sdom; 1335 1336 sdom = AF_UNSPEC; 1337 #ifdef WITH_INET6 1338 if (sdom == AF_UNSPEC && feature_present("inet6")) 1339 sdom = AF_INET6; 1340 #endif 1341 #ifdef WITH_INET 1342 if (sdom == AF_UNSPEC && feature_present("inet")) 1343 sdom = AF_INET; 1344 #endif 1345 if (sdom == AF_UNSPEC) 1346 sdom = AF_LINK; 1347 1348 return (sdom); 1349 } 1350 1351 int 1352 get_query_socket(void) 1353 { 1354 static int s = -1; 1355 1356 if (s == -1) { 1357 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1358 err(1, "socket"); 1359 } 1360 1361 return (s); 1362 } 1363 1364 /* 1365 * Returns the response len if the name is a group, otherwise returns 0. 1366 */ 1367 static int 1368 is_a_group(char *name) 1369 { 1370 ENTRY item; 1371 ENTRY *ret_item; 1372 1373 item.key = name; 1374 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1375 return (0); 1376 1377 return (*(int *)ret_item->data); 1378 } 1379 1380 struct node_host * 1381 ifa_exists(char *ifa_name) 1382 { 1383 struct node_host *n; 1384 1385 if (iftab == NULL) 1386 ifa_load(); 1387 1388 /* check whether this is a group */ 1389 if (is_a_group(ifa_name)) { 1390 /* fake a node_host */ 1391 if ((n = calloc(1, sizeof(*n))) == NULL) 1392 err(1, "calloc"); 1393 if ((n->ifname = strdup(ifa_name)) == NULL) 1394 err(1, "strdup"); 1395 return (n); 1396 } 1397 1398 for (n = iftab; n; n = n->next) { 1399 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1400 return (n); 1401 } 1402 1403 return (NULL); 1404 } 1405 1406 struct node_host * 1407 ifa_grouplookup(char *ifa_name, int flags) 1408 { 1409 struct ifg_req *ifg; 1410 struct ifgroupreq ifgr; 1411 int s, len; 1412 struct node_host *n, *h = NULL; 1413 1414 s = get_query_socket(); 1415 len = is_a_group(ifa_name); 1416 if (len == 0) 1417 return (NULL); 1418 bzero(&ifgr, sizeof(ifgr)); 1419 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1420 ifgr.ifgr_len = len; 1421 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1422 err(1, "calloc"); 1423 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1424 err(1, "SIOCGIFGMEMB"); 1425 1426 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1427 ifg++) { 1428 len -= sizeof(struct ifg_req); 1429 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1430 continue; 1431 if (h == NULL) 1432 h = n; 1433 else { 1434 h->tail->next = n; 1435 h->tail = n->tail; 1436 } 1437 } 1438 free(ifgr.ifgr_groups); 1439 1440 return (h); 1441 } 1442 1443 struct node_host * 1444 ifa_lookup(char *ifa_name, int flags) 1445 { 1446 struct node_host *p = NULL, *h = NULL, *n = NULL; 1447 int got4 = 0, got6 = 0; 1448 const char *last_if = NULL; 1449 1450 /* first load iftab and isgroup_map */ 1451 if (iftab == NULL) 1452 ifa_load(); 1453 1454 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1455 return (h); 1456 1457 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1458 ifa_name = NULL; 1459 1460 for (p = iftab; p; p = p->next) { 1461 if (ifa_skip_if(ifa_name, p)) 1462 continue; 1463 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1464 continue; 1465 if ((flags & PFI_AFLAG_BROADCAST) && 1466 !(p->ifa_flags & IFF_BROADCAST)) 1467 continue; 1468 if ((flags & PFI_AFLAG_PEER) && 1469 !(p->ifa_flags & IFF_POINTOPOINT)) 1470 continue; 1471 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1472 continue; 1473 if (last_if == NULL || strcmp(last_if, p->ifname)) 1474 got4 = got6 = 0; 1475 last_if = p->ifname; 1476 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1477 continue; 1478 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1479 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1480 continue; 1481 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1482 continue; 1483 if (p->af == AF_INET) 1484 got4 = 1; 1485 else 1486 got6 = 1; 1487 n = calloc(1, sizeof(struct node_host)); 1488 if (n == NULL) 1489 err(1, "address: calloc"); 1490 n->af = p->af; 1491 if (flags & PFI_AFLAG_BROADCAST) 1492 memcpy(&n->addr.v.a.addr, &p->bcast, 1493 sizeof(struct pf_addr)); 1494 else if (flags & PFI_AFLAG_PEER) 1495 memcpy(&n->addr.v.a.addr, &p->peer, 1496 sizeof(struct pf_addr)); 1497 else 1498 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1499 sizeof(struct pf_addr)); 1500 if (flags & PFI_AFLAG_NETWORK) 1501 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1502 else { 1503 if (n->af == AF_INET) { 1504 if (p->ifa_flags & IFF_LOOPBACK && 1505 p->ifa_flags & IFF_LINK1) 1506 memcpy(&n->addr.v.a.mask, 1507 &p->addr.v.a.mask, 1508 sizeof(struct pf_addr)); 1509 else 1510 set_ipmask(n, 32); 1511 } else 1512 set_ipmask(n, 128); 1513 } 1514 n->ifindex = p->ifindex; 1515 n->ifname = strdup(p->ifname); 1516 1517 n->next = NULL; 1518 n->tail = n; 1519 if (h == NULL) 1520 h = n; 1521 else { 1522 h->tail->next = n; 1523 h->tail = n; 1524 } 1525 } 1526 return (h); 1527 } 1528 1529 int 1530 ifa_skip_if(const char *filter, struct node_host *p) 1531 { 1532 int n; 1533 1534 if (p->af != AF_INET && p->af != AF_INET6) 1535 return (1); 1536 if (filter == NULL || !*filter) 1537 return (0); 1538 if (!strcmp(p->ifname, filter)) 1539 return (0); /* exact match */ 1540 n = strlen(filter); 1541 if (n < 1 || n >= IFNAMSIZ) 1542 return (1); /* sanity check */ 1543 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1544 return (1); /* only do exact match in that case */ 1545 if (strncmp(p->ifname, filter, n)) 1546 return (1); /* prefix doesn't match */ 1547 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1548 } 1549 1550 1551 struct node_host * 1552 host(const char *s) 1553 { 1554 struct node_host *h = NULL; 1555 int mask, v4mask, v6mask, cont = 1; 1556 char *p, *q, *ps; 1557 1558 if ((p = strrchr(s, '/')) != NULL) { 1559 mask = strtol(p+1, &q, 0); 1560 if (!q || *q || mask > 128 || q == (p+1)) { 1561 fprintf(stderr, "invalid netmask '%s'\n", p); 1562 return (NULL); 1563 } 1564 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1565 err(1, "host: malloc"); 1566 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1567 v4mask = v6mask = mask; 1568 } else { 1569 if ((ps = strdup(s)) == NULL) 1570 err(1, "host: strdup"); 1571 v4mask = 32; 1572 v6mask = 128; 1573 mask = -1; 1574 } 1575 1576 /* IPv4 address? */ 1577 if (cont && (h = host_v4(s, mask)) != NULL) 1578 cont = 0; 1579 1580 /* IPv6 address? */ 1581 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1582 cont = 0; 1583 1584 /* interface with this name exists? */ 1585 /* expensive with thousands of interfaces - prioritze IPv4/6 check */ 1586 if (cont && (h = host_if(ps, mask)) != NULL) 1587 cont = 0; 1588 1589 /* dns lookup */ 1590 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1591 cont = 0; 1592 free(ps); 1593 1594 if (h == NULL || cont == 1) { 1595 fprintf(stderr, "no IP address found for %s\n", s); 1596 return (NULL); 1597 } 1598 return (h); 1599 } 1600 1601 struct node_host * 1602 host_if(const char *s, int mask) 1603 { 1604 struct node_host *n, *h = NULL; 1605 char *p, *ps; 1606 int flags = 0; 1607 1608 if ((ps = strdup(s)) == NULL) 1609 err(1, "host_if: strdup"); 1610 while ((p = strrchr(ps, ':')) != NULL) { 1611 if (!strcmp(p+1, "network")) 1612 flags |= PFI_AFLAG_NETWORK; 1613 else if (!strcmp(p+1, "broadcast")) 1614 flags |= PFI_AFLAG_BROADCAST; 1615 else if (!strcmp(p+1, "peer")) 1616 flags |= PFI_AFLAG_PEER; 1617 else if (!strcmp(p+1, "0")) 1618 flags |= PFI_AFLAG_NOALIAS; 1619 else { 1620 free(ps); 1621 return (NULL); 1622 } 1623 *p = '\0'; 1624 } 1625 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1626 fprintf(stderr, "illegal combination of interface modifiers\n"); 1627 free(ps); 1628 return (NULL); 1629 } 1630 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1631 fprintf(stderr, "network or broadcast lookup, but " 1632 "extra netmask given\n"); 1633 free(ps); 1634 return (NULL); 1635 } 1636 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1637 /* interface with this name exists */ 1638 h = ifa_lookup(ps, flags); 1639 for (n = h; n != NULL && mask > -1; n = n->next) 1640 set_ipmask(n, mask); 1641 } 1642 1643 free(ps); 1644 return (h); 1645 } 1646 1647 struct node_host * 1648 host_v4(const char *s, int mask) 1649 { 1650 struct node_host *h = NULL; 1651 struct in_addr ina; 1652 int bits = 32; 1653 1654 memset(&ina, 0, sizeof(struct in_addr)); 1655 if (strrchr(s, '/') != NULL) { 1656 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1657 return (NULL); 1658 } else { 1659 if (inet_pton(AF_INET, s, &ina) != 1) 1660 return (NULL); 1661 } 1662 1663 h = calloc(1, sizeof(struct node_host)); 1664 if (h == NULL) 1665 err(1, "address: calloc"); 1666 h->ifname = NULL; 1667 h->af = AF_INET; 1668 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1669 set_ipmask(h, bits); 1670 h->next = NULL; 1671 h->tail = h; 1672 1673 return (h); 1674 } 1675 1676 struct node_host * 1677 host_v6(const char *s, int mask) 1678 { 1679 struct addrinfo hints, *res; 1680 struct node_host *h = NULL; 1681 1682 memset(&hints, 0, sizeof(hints)); 1683 hints.ai_family = AF_INET6; 1684 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1685 hints.ai_flags = AI_NUMERICHOST; 1686 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1687 h = calloc(1, sizeof(struct node_host)); 1688 if (h == NULL) 1689 err(1, "address: calloc"); 1690 h->ifname = NULL; 1691 h->af = AF_INET6; 1692 memcpy(&h->addr.v.a.addr, 1693 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1694 sizeof(h->addr.v.a.addr)); 1695 h->ifindex = 1696 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1697 set_ipmask(h, mask); 1698 freeaddrinfo(res); 1699 h->next = NULL; 1700 h->tail = h; 1701 } 1702 1703 return (h); 1704 } 1705 1706 struct node_host * 1707 host_dns(const char *s, int v4mask, int v6mask) 1708 { 1709 struct addrinfo hints, *res0, *res; 1710 struct node_host *n, *h = NULL; 1711 int error, noalias = 0; 1712 int got4 = 0, got6 = 0; 1713 char *p, *ps; 1714 1715 if ((ps = strdup(s)) == NULL) 1716 err(1, "host_dns: strdup"); 1717 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1718 noalias = 1; 1719 *p = '\0'; 1720 } 1721 memset(&hints, 0, sizeof(hints)); 1722 hints.ai_family = PF_UNSPEC; 1723 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1724 error = getaddrinfo(ps, NULL, &hints, &res0); 1725 if (error) { 1726 free(ps); 1727 return (h); 1728 } 1729 1730 for (res = res0; res; res = res->ai_next) { 1731 if (res->ai_family != AF_INET && 1732 res->ai_family != AF_INET6) 1733 continue; 1734 if (noalias) { 1735 if (res->ai_family == AF_INET) { 1736 if (got4) 1737 continue; 1738 got4 = 1; 1739 } else { 1740 if (got6) 1741 continue; 1742 got6 = 1; 1743 } 1744 } 1745 n = calloc(1, sizeof(struct node_host)); 1746 if (n == NULL) 1747 err(1, "host_dns: calloc"); 1748 n->ifname = NULL; 1749 n->af = res->ai_family; 1750 if (res->ai_family == AF_INET) { 1751 memcpy(&n->addr.v.a.addr, 1752 &((struct sockaddr_in *) 1753 res->ai_addr)->sin_addr.s_addr, 1754 sizeof(struct in_addr)); 1755 set_ipmask(n, v4mask); 1756 } else { 1757 memcpy(&n->addr.v.a.addr, 1758 &((struct sockaddr_in6 *) 1759 res->ai_addr)->sin6_addr.s6_addr, 1760 sizeof(struct in6_addr)); 1761 n->ifindex = 1762 ((struct sockaddr_in6 *) 1763 res->ai_addr)->sin6_scope_id; 1764 set_ipmask(n, v6mask); 1765 } 1766 n->next = NULL; 1767 n->tail = n; 1768 if (h == NULL) 1769 h = n; 1770 else { 1771 h->tail->next = n; 1772 h->tail = n; 1773 } 1774 } 1775 freeaddrinfo(res0); 1776 free(ps); 1777 1778 return (h); 1779 } 1780 1781 /* 1782 * convert a hostname to a list of addresses and put them in the given buffer. 1783 * test: 1784 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1785 */ 1786 int 1787 append_addr(struct pfr_buffer *b, char *s, int test) 1788 { 1789 char *r; 1790 struct node_host *h, *n; 1791 int rv, not = 0; 1792 1793 for (r = s; *r == '!'; r++) 1794 not = !not; 1795 if ((n = host(r)) == NULL) { 1796 errno = 0; 1797 return (-1); 1798 } 1799 rv = append_addr_host(b, n, test, not); 1800 do { 1801 h = n; 1802 n = n->next; 1803 free(h); 1804 } while (n != NULL); 1805 return (rv); 1806 } 1807 1808 /* 1809 * same as previous function, but with a pre-parsed input and the ability 1810 * to "negate" the result. Does not free the node_host list. 1811 * not: 1812 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1813 */ 1814 int 1815 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1816 { 1817 int bits; 1818 struct pfr_addr addr; 1819 1820 do { 1821 bzero(&addr, sizeof(addr)); 1822 addr.pfra_not = n->not ^ not; 1823 addr.pfra_af = n->af; 1824 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1825 switch (n->af) { 1826 case AF_INET: 1827 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1828 bits = 32; 1829 break; 1830 case AF_INET6: 1831 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1832 sizeof(struct in6_addr)); 1833 bits = 128; 1834 break; 1835 default: 1836 errno = EINVAL; 1837 return (-1); 1838 } 1839 if ((test && (not || addr.pfra_net != bits)) || 1840 addr.pfra_net > bits) { 1841 errno = EINVAL; 1842 return (-1); 1843 } 1844 if (pfr_buf_add(b, &addr)) 1845 return (-1); 1846 } while ((n = n->next) != NULL); 1847 1848 return (0); 1849 } 1850 1851 int 1852 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1853 { 1854 struct pfioc_trans_e trans; 1855 1856 bzero(&trans, sizeof(trans)); 1857 trans.rs_num = rs_num; 1858 if (strlcpy(trans.anchor, anchor, 1859 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1860 errx(1, "pfctl_add_trans: strlcpy"); 1861 1862 return pfr_buf_add(buf, &trans); 1863 } 1864 1865 u_int32_t 1866 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1867 { 1868 struct pfioc_trans_e *p; 1869 1870 PFRB_FOREACH(p, buf) 1871 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1872 return (p->ticket); 1873 errx(1, "pfctl_get_ticket: assertion failed"); 1874 } 1875 1876 int 1877 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1878 { 1879 struct pfioc_trans trans; 1880 1881 bzero(&trans, sizeof(trans)); 1882 trans.size = buf->pfrb_size - from; 1883 trans.esize = sizeof(struct pfioc_trans_e); 1884 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1885 return ioctl(dev, cmd, &trans); 1886 } 1887