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 pf_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 } 490 491 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 492 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 493 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 494 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 495 496 void 497 print_status(struct pf_status *s, int opts) 498 { 499 char statline[80], *running; 500 time_t runtime; 501 int i; 502 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 503 static const char hex[] = "0123456789abcdef"; 504 505 runtime = time(NULL) - s->since; 506 running = s->running ? "Enabled" : "Disabled"; 507 508 if (s->since) { 509 unsigned int sec, min, hrs, day = runtime; 510 511 sec = day % 60; 512 day /= 60; 513 min = day % 60; 514 day /= 60; 515 hrs = day % 24; 516 day /= 24; 517 snprintf(statline, sizeof(statline), 518 "Status: %s for %u days %.2u:%.2u:%.2u", 519 running, day, hrs, min, sec); 520 } else 521 snprintf(statline, sizeof(statline), "Status: %s", running); 522 printf("%-44s", statline); 523 switch (s->debug) { 524 case PF_DEBUG_NONE: 525 printf("%15s\n\n", "Debug: None"); 526 break; 527 case PF_DEBUG_URGENT: 528 printf("%15s\n\n", "Debug: Urgent"); 529 break; 530 case PF_DEBUG_MISC: 531 printf("%15s\n\n", "Debug: Misc"); 532 break; 533 case PF_DEBUG_NOISY: 534 printf("%15s\n\n", "Debug: Loud"); 535 break; 536 } 537 538 if (opts & PF_OPT_VERBOSE) { 539 printf("Hostid: 0x%08x\n", ntohl(s->hostid)); 540 541 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 542 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 543 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 544 } 545 buf[i + i] = '\0'; 546 printf("Checksum: 0x%s\n\n", buf); 547 } 548 549 if (s->ifname[0] != 0) { 550 printf("Interface Stats for %-16s %5s %16s\n", 551 s->ifname, "IPv4", "IPv6"); 552 printf(" %-25s %14llu %16llu\n", "Bytes In", 553 (unsigned long long)s->bcounters[0][0], 554 (unsigned long long)s->bcounters[1][0]); 555 printf(" %-25s %14llu %16llu\n", "Bytes Out", 556 (unsigned long long)s->bcounters[0][1], 557 (unsigned long long)s->bcounters[1][1]); 558 printf(" Packets In\n"); 559 printf(" %-23s %14llu %16llu\n", "Passed", 560 (unsigned long long)s->pcounters[0][0][PF_PASS], 561 (unsigned long long)s->pcounters[1][0][PF_PASS]); 562 printf(" %-23s %14llu %16llu\n", "Blocked", 563 (unsigned long long)s->pcounters[0][0][PF_DROP], 564 (unsigned long long)s->pcounters[1][0][PF_DROP]); 565 printf(" Packets Out\n"); 566 printf(" %-23s %14llu %16llu\n", "Passed", 567 (unsigned long long)s->pcounters[0][1][PF_PASS], 568 (unsigned long long)s->pcounters[1][1][PF_PASS]); 569 printf(" %-23s %14llu %16llu\n\n", "Blocked", 570 (unsigned long long)s->pcounters[0][1][PF_DROP], 571 (unsigned long long)s->pcounters[1][1][PF_DROP]); 572 } 573 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 574 printf(" %-25s %14u %14s\n", "current entries", s->states, ""); 575 for (i = 0; i < FCNT_MAX; i++) { 576 printf(" %-25s %14llu ", pf_fcounters[i], 577 (unsigned long long)s->fcounters[i]); 578 if (runtime > 0) 579 printf("%14.1f/s\n", 580 (double)s->fcounters[i] / (double)runtime); 581 else 582 printf("%14s\n", ""); 583 } 584 if (opts & PF_OPT_VERBOSE) { 585 printf("Source Tracking Table\n"); 586 printf(" %-25s %14u %14s\n", "current entries", 587 s->src_nodes, ""); 588 for (i = 0; i < SCNT_MAX; i++) { 589 printf(" %-25s %14lld ", pf_scounters[i], 590 #ifdef __FreeBSD__ 591 (long long)s->scounters[i]); 592 #else 593 s->scounters[i]); 594 #endif 595 if (runtime > 0) 596 printf("%14.1f/s\n", 597 (double)s->scounters[i] / (double)runtime); 598 else 599 printf("%14s\n", ""); 600 } 601 } 602 printf("Counters\n"); 603 for (i = 0; i < PFRES_MAX; i++) { 604 printf(" %-25s %14llu ", pf_reasons[i], 605 (unsigned long long)s->counters[i]); 606 if (runtime > 0) 607 printf("%14.1f/s\n", 608 (double)s->counters[i] / (double)runtime); 609 else 610 printf("%14s\n", ""); 611 } 612 if (opts & PF_OPT_VERBOSE) { 613 printf("Limit Counters\n"); 614 for (i = 0; i < LCNT_MAX; i++) { 615 printf(" %-25s %14lld ", pf_lcounters[i], 616 #ifdef __FreeBSD__ 617 (unsigned long long)s->lcounters[i]); 618 #else 619 s->lcounters[i]); 620 #endif 621 if (runtime > 0) 622 printf("%14.1f/s\n", 623 (double)s->lcounters[i] / (double)runtime); 624 else 625 printf("%14s\n", ""); 626 } 627 } 628 } 629 630 void 631 print_running(struct pf_status *status) 632 { 633 printf("%s\n", status->running ? "Enabled" : "Disabled"); 634 } 635 636 void 637 print_src_node(struct pf_src_node *sn, int opts) 638 { 639 struct pf_addr_wrap aw; 640 int min, sec; 641 642 memset(&aw, 0, sizeof(aw)); 643 if (sn->af == AF_INET) 644 aw.v.a.mask.addr32[0] = 0xffffffff; 645 else 646 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 647 648 aw.v.a.addr = sn->addr; 649 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 650 printf(" -> "); 651 aw.v.a.addr = sn->raddr; 652 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 653 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 654 sn->conn, sn->conn_rate.count / 1000, 655 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 656 if (opts & PF_OPT_VERBOSE) { 657 sec = sn->creation % 60; 658 sn->creation /= 60; 659 min = sn->creation % 60; 660 sn->creation /= 60; 661 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 662 if (sn->states == 0) { 663 sec = sn->expire % 60; 664 sn->expire /= 60; 665 min = sn->expire % 60; 666 sn->expire /= 60; 667 printf(", expires in %.2u:%.2u:%.2u", 668 sn->expire, min, sec); 669 } 670 printf(", %llu pkts, %llu bytes", 671 #ifdef __FreeBSD__ 672 (unsigned long long)(sn->packets[0] + sn->packets[1]), 673 (unsigned long long)(sn->bytes[0] + sn->bytes[1])); 674 #else 675 sn->packets[0] + sn->packets[1], 676 sn->bytes[0] + sn->bytes[1]); 677 #endif 678 switch (sn->ruletype) { 679 case PF_NAT: 680 if (sn->rule.nr != -1) 681 printf(", nat rule %u", sn->rule.nr); 682 break; 683 case PF_RDR: 684 if (sn->rule.nr != -1) 685 printf(", rdr rule %u", sn->rule.nr); 686 break; 687 case PF_PASS: 688 if (sn->rule.nr != -1) 689 printf(", filter rule %u", sn->rule.nr); 690 break; 691 } 692 printf("\n"); 693 } 694 } 695 696 void 697 print_rule(struct pf_rule *r, const char *anchor_call, int verbose, int numeric) 698 { 699 static const char *actiontypes[] = { "pass", "block", "scrub", 700 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" }; 701 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 702 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 703 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 704 int i, opts; 705 706 if (verbose) 707 printf("@%d ", r->nr); 708 if (r->action > PF_NORDR) 709 printf("action(%d)", r->action); 710 else if (anchor_call[0]) { 711 if (anchor_call[0] == '_') { 712 printf("%s", anchortypes[r->action]); 713 } else 714 printf("%s \"%s\"", anchortypes[r->action], 715 anchor_call); 716 } else { 717 printf("%s", actiontypes[r->action]); 718 if (r->natpass) 719 printf(" pass"); 720 } 721 if (r->action == PF_DROP) { 722 if (r->rule_flag & PFRULE_RETURN) 723 printf(" return"); 724 else if (r->rule_flag & PFRULE_RETURNRST) { 725 if (!r->return_ttl) 726 printf(" return-rst"); 727 else 728 printf(" return-rst(ttl %d)", r->return_ttl); 729 } else if (r->rule_flag & PFRULE_RETURNICMP) { 730 const struct icmpcodeent *ic, *ic6; 731 732 ic = geticmpcodebynumber(r->return_icmp >> 8, 733 r->return_icmp & 255, AF_INET); 734 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 735 r->return_icmp6 & 255, AF_INET6); 736 737 switch (r->af) { 738 case AF_INET: 739 printf(" return-icmp"); 740 if (ic == NULL) 741 printf("(%u)", r->return_icmp & 255); 742 else 743 printf("(%s)", ic->name); 744 break; 745 case AF_INET6: 746 printf(" return-icmp6"); 747 if (ic6 == NULL) 748 printf("(%u)", r->return_icmp6 & 255); 749 else 750 printf("(%s)", ic6->name); 751 break; 752 default: 753 printf(" return-icmp"); 754 if (ic == NULL) 755 printf("(%u, ", r->return_icmp & 255); 756 else 757 printf("(%s, ", ic->name); 758 if (ic6 == NULL) 759 printf("%u)", r->return_icmp6 & 255); 760 else 761 printf("%s)", ic6->name); 762 break; 763 } 764 } else 765 printf(" drop"); 766 } 767 if (r->direction == PF_IN) 768 printf(" in"); 769 else if (r->direction == PF_OUT) 770 printf(" out"); 771 if (r->log) { 772 printf(" log"); 773 if (r->log & ~PF_LOG || r->logif) { 774 int count = 0; 775 776 printf(" ("); 777 if (r->log & PF_LOG_ALL) 778 printf("%sall", count++ ? ", " : ""); 779 if (r->log & PF_LOG_SOCKET_LOOKUP) 780 printf("%suser", count++ ? ", " : ""); 781 if (r->logif) 782 printf("%sto pflog%u", count++ ? ", " : "", 783 r->logif); 784 printf(")"); 785 } 786 } 787 if (r->quick) 788 printf(" quick"); 789 if (r->ifname[0]) { 790 if (r->ifnot) 791 printf(" on ! %s", r->ifname); 792 else 793 printf(" on %s", r->ifname); 794 } 795 if (r->rt) { 796 if (r->rt == PF_ROUTETO) 797 printf(" route-to"); 798 else if (r->rt == PF_REPLYTO) 799 printf(" reply-to"); 800 else if (r->rt == PF_DUPTO) 801 printf(" dup-to"); 802 printf(" "); 803 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 804 } 805 if (r->af) { 806 if (r->af == AF_INET) 807 printf(" inet"); 808 else 809 printf(" inet6"); 810 } 811 if (r->proto) { 812 struct protoent *p; 813 814 if ((p = getprotobynumber(r->proto)) != NULL) 815 printf(" proto %s", p->p_name); 816 else 817 printf(" proto %u", r->proto); 818 } 819 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 820 verbose, numeric); 821 if (r->uid.op) 822 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 823 UID_MAX); 824 if (r->gid.op) 825 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 826 GID_MAX); 827 if (r->flags || r->flagset) { 828 printf(" flags "); 829 print_flags(r->flags); 830 printf("/"); 831 print_flags(r->flagset); 832 } else if (r->action == PF_PASS && 833 (!r->proto || r->proto == IPPROTO_TCP) && 834 !(r->rule_flag & PFRULE_FRAGMENT) && 835 !anchor_call[0] && r->keep_state) 836 printf(" flags any"); 837 if (r->type) { 838 const struct icmptypeent *it; 839 840 it = geticmptypebynumber(r->type-1, r->af); 841 if (r->af != AF_INET6) 842 printf(" icmp-type"); 843 else 844 printf(" icmp6-type"); 845 if (it != NULL) 846 printf(" %s", it->name); 847 else 848 printf(" %u", r->type-1); 849 if (r->code) { 850 const struct icmpcodeent *ic; 851 852 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 853 if (ic != NULL) 854 printf(" code %s", ic->name); 855 else 856 printf(" code %u", r->code-1); 857 } 858 } 859 if (r->tos) 860 printf(" tos 0x%2.2x", r->tos); 861 if (r->prio) 862 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 863 if (r->scrub_flags & PFSTATE_SETMASK) { 864 char *comma = ""; 865 printf(" set ("); 866 if (r->scrub_flags & PFSTATE_SETPRIO) { 867 if (r->set_prio[0] == r->set_prio[1]) 868 printf("%s prio %u", comma, r->set_prio[0]); 869 else 870 printf("%s prio(%u, %u)", comma, r->set_prio[0], 871 r->set_prio[1]); 872 comma = ","; 873 } 874 printf(" )"); 875 } 876 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 877 printf(" no state"); 878 else if (r->keep_state == PF_STATE_NORMAL) 879 printf(" keep state"); 880 else if (r->keep_state == PF_STATE_MODULATE) 881 printf(" modulate state"); 882 else if (r->keep_state == PF_STATE_SYNPROXY) 883 printf(" synproxy state"); 884 if (r->prob) { 885 char buf[20]; 886 887 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 888 for (i = strlen(buf)-1; i > 0; i--) { 889 if (buf[i] == '0') 890 buf[i] = '\0'; 891 else { 892 if (buf[i] == '.') 893 buf[i] = '\0'; 894 break; 895 } 896 } 897 printf(" probability %s%%", buf); 898 } 899 opts = 0; 900 if (r->max_states || r->max_src_nodes || r->max_src_states) 901 opts = 1; 902 if (r->rule_flag & PFRULE_NOSYNC) 903 opts = 1; 904 if (r->rule_flag & PFRULE_SRCTRACK) 905 opts = 1; 906 if (r->rule_flag & PFRULE_IFBOUND) 907 opts = 1; 908 if (r->rule_flag & PFRULE_STATESLOPPY) 909 opts = 1; 910 for (i = 0; !opts && i < PFTM_MAX; ++i) 911 if (r->timeout[i]) 912 opts = 1; 913 if (opts) { 914 printf(" ("); 915 if (r->max_states) { 916 printf("max %u", r->max_states); 917 opts = 0; 918 } 919 if (r->rule_flag & PFRULE_NOSYNC) { 920 if (!opts) 921 printf(", "); 922 printf("no-sync"); 923 opts = 0; 924 } 925 if (r->rule_flag & PFRULE_SRCTRACK) { 926 if (!opts) 927 printf(", "); 928 printf("source-track"); 929 if (r->rule_flag & PFRULE_RULESRCTRACK) 930 printf(" rule"); 931 else 932 printf(" global"); 933 opts = 0; 934 } 935 if (r->max_src_states) { 936 if (!opts) 937 printf(", "); 938 printf("max-src-states %u", r->max_src_states); 939 opts = 0; 940 } 941 if (r->max_src_conn) { 942 if (!opts) 943 printf(", "); 944 printf("max-src-conn %u", r->max_src_conn); 945 opts = 0; 946 } 947 if (r->max_src_conn_rate.limit) { 948 if (!opts) 949 printf(", "); 950 printf("max-src-conn-rate %u/%u", 951 r->max_src_conn_rate.limit, 952 r->max_src_conn_rate.seconds); 953 opts = 0; 954 } 955 if (r->max_src_nodes) { 956 if (!opts) 957 printf(", "); 958 printf("max-src-nodes %u", r->max_src_nodes); 959 opts = 0; 960 } 961 if (r->overload_tblname[0]) { 962 if (!opts) 963 printf(", "); 964 printf("overload <%s>", r->overload_tblname); 965 if (r->flush) 966 printf(" flush"); 967 if (r->flush & PF_FLUSH_GLOBAL) 968 printf(" global"); 969 } 970 if (r->rule_flag & PFRULE_IFBOUND) { 971 if (!opts) 972 printf(", "); 973 printf("if-bound"); 974 opts = 0; 975 } 976 if (r->rule_flag & PFRULE_STATESLOPPY) { 977 if (!opts) 978 printf(", "); 979 printf("sloppy"); 980 opts = 0; 981 } 982 for (i = 0; i < PFTM_MAX; ++i) 983 if (r->timeout[i]) { 984 int j; 985 986 if (!opts) 987 printf(", "); 988 opts = 0; 989 for (j = 0; pf_timeouts[j].name != NULL; 990 ++j) 991 if (pf_timeouts[j].timeout == i) 992 break; 993 printf("%s %u", pf_timeouts[j].name == NULL ? 994 "inv.timeout" : pf_timeouts[j].name, 995 r->timeout[i]); 996 } 997 printf(")"); 998 } 999 if (r->rule_flag & PFRULE_FRAGMENT) 1000 printf(" fragment"); 1001 if (r->rule_flag & PFRULE_NODF) 1002 printf(" no-df"); 1003 if (r->rule_flag & PFRULE_RANDOMID) 1004 printf(" random-id"); 1005 if (r->min_ttl) 1006 printf(" min-ttl %d", r->min_ttl); 1007 if (r->max_mss) 1008 printf(" max-mss %d", r->max_mss); 1009 if (r->rule_flag & PFRULE_SET_TOS) 1010 printf(" set-tos 0x%2.2x", r->set_tos); 1011 if (r->allow_opts) 1012 printf(" allow-opts"); 1013 if (r->action == PF_SCRUB) { 1014 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1015 printf(" reassemble tcp"); 1016 1017 printf(" fragment reassemble"); 1018 } 1019 if (r->label[0]) 1020 printf(" label \"%s\"", r->label); 1021 if (r->qname[0] && r->pqname[0]) 1022 printf(" queue(%s, %s)", r->qname, r->pqname); 1023 else if (r->qname[0]) 1024 printf(" queue %s", r->qname); 1025 if (r->tagname[0]) 1026 printf(" tag %s", r->tagname); 1027 if (r->match_tagname[0]) { 1028 if (r->match_tag_not) 1029 printf(" !"); 1030 printf(" tagged %s", r->match_tagname); 1031 } 1032 if (r->rtableid != -1) 1033 printf(" rtable %u", r->rtableid); 1034 if (r->divert.port) { 1035 #ifdef __FreeBSD__ 1036 printf(" divert-to %u", ntohs(r->divert.port)); 1037 #else 1038 if (PF_AZERO(&r->divert.addr, r->af)) { 1039 printf(" divert-reply"); 1040 } else { 1041 /* XXX cut&paste from print_addr */ 1042 char buf[48]; 1043 1044 printf(" divert-to "); 1045 if (inet_ntop(r->af, &r->divert.addr, buf, 1046 sizeof(buf)) == NULL) 1047 printf("?"); 1048 else 1049 printf("%s", buf); 1050 printf(" port %u", ntohs(r->divert.port)); 1051 } 1052 #endif 1053 } 1054 if (!anchor_call[0] && (r->action == PF_NAT || 1055 r->action == PF_BINAT || r->action == PF_RDR)) { 1056 printf(" -> "); 1057 print_pool(&r->rpool, r->rpool.proxy_port[0], 1058 r->rpool.proxy_port[1], r->af, r->action); 1059 } 1060 } 1061 1062 void 1063 print_tabledef(const char *name, int flags, int addrs, 1064 struct node_tinithead *nodes) 1065 { 1066 struct node_tinit *ti, *nti; 1067 struct node_host *h; 1068 1069 printf("table <%s>", name); 1070 if (flags & PFR_TFLAG_CONST) 1071 printf(" const"); 1072 if (flags & PFR_TFLAG_PERSIST) 1073 printf(" persist"); 1074 if (flags & PFR_TFLAG_COUNTERS) 1075 printf(" counters"); 1076 SIMPLEQ_FOREACH(ti, nodes, entries) { 1077 if (ti->file) { 1078 printf(" file \"%s\"", ti->file); 1079 continue; 1080 } 1081 printf(" {"); 1082 for (;;) { 1083 for (h = ti->host; h != NULL; h = h->next) { 1084 printf(h->not ? " !" : " "); 1085 print_addr(&h->addr, h->af, 0); 1086 } 1087 nti = SIMPLEQ_NEXT(ti, entries); 1088 if (nti != NULL && nti->file == NULL) 1089 ti = nti; /* merge lists */ 1090 else 1091 break; 1092 } 1093 printf(" }"); 1094 } 1095 if (addrs && SIMPLEQ_EMPTY(nodes)) 1096 printf(" { }"); 1097 printf("\n"); 1098 } 1099 1100 int 1101 parse_flags(char *s) 1102 { 1103 char *p, *q; 1104 u_int8_t f = 0; 1105 1106 for (p = s; *p; p++) { 1107 if ((q = strchr(tcpflags, *p)) == NULL) 1108 return -1; 1109 else 1110 f |= 1 << (q - tcpflags); 1111 } 1112 return (f ? f : PF_TH_ALL); 1113 } 1114 1115 void 1116 set_ipmask(struct node_host *h, u_int8_t b) 1117 { 1118 struct pf_addr *m, *n; 1119 int i, j = 0; 1120 1121 m = &h->addr.v.a.mask; 1122 memset(m, 0, sizeof(*m)); 1123 1124 while (b >= 32) { 1125 m->addr32[j++] = 0xffffffff; 1126 b -= 32; 1127 } 1128 for (i = 31; i > 31-b; --i) 1129 m->addr32[j] |= (1 << i); 1130 if (b) 1131 m->addr32[j] = htonl(m->addr32[j]); 1132 1133 /* Mask off bits of the address that will never be used. */ 1134 n = &h->addr.v.a.addr; 1135 if (h->addr.type == PF_ADDR_ADDRMASK) 1136 for (i = 0; i < 4; i++) 1137 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1138 } 1139 1140 int 1141 check_netmask(struct node_host *h, sa_family_t af) 1142 { 1143 struct node_host *n = NULL; 1144 struct pf_addr *m; 1145 1146 for (n = h; n != NULL; n = n->next) { 1147 if (h->addr.type == PF_ADDR_TABLE) 1148 continue; 1149 m = &h->addr.v.a.mask; 1150 /* fix up netmask for dynaddr */ 1151 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1152 unmask(m, AF_INET6) > 32) 1153 set_ipmask(n, 32); 1154 /* netmasks > 32 bit are invalid on v4 */ 1155 if (af == AF_INET && 1156 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1157 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1158 unmask(m, AF_INET6)); 1159 return (1); 1160 } 1161 } 1162 return (0); 1163 } 1164 1165 /* interface lookup routines */ 1166 1167 static struct node_host *iftab; 1168 1169 /* 1170 * Retrieve the list of groups this interface is a member of and make sure 1171 * each group is in the group map. 1172 */ 1173 static void 1174 ifa_add_groups_to_map(char *ifa_name) 1175 { 1176 int s, len; 1177 struct ifgroupreq ifgr; 1178 struct ifg_req *ifg; 1179 1180 s = get_query_socket(); 1181 1182 /* Get size of group list for this interface */ 1183 memset(&ifgr, 0, sizeof(ifgr)); 1184 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1185 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1186 err(1, "SIOCGIFGROUP"); 1187 1188 /* Retrieve group list for this interface */ 1189 len = ifgr.ifgr_len; 1190 ifgr.ifgr_groups = 1191 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1192 sizeof(struct ifg_req)); 1193 if (ifgr.ifgr_groups == NULL) 1194 err(1, "calloc"); 1195 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1196 err(1, "SIOCGIFGROUP"); 1197 1198 ifg = ifgr.ifgr_groups; 1199 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1200 len -= sizeof(struct ifg_req); 1201 if (strcmp(ifg->ifgrq_group, "all")) { 1202 ENTRY item; 1203 ENTRY *ret_item; 1204 int *answer; 1205 1206 item.key = ifg->ifgrq_group; 1207 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1208 struct ifgroupreq ifgr2; 1209 1210 /* Don't know the answer yet */ 1211 if ((answer = malloc(sizeof(int))) == NULL) 1212 err(1, "malloc"); 1213 1214 bzero(&ifgr2, sizeof(ifgr2)); 1215 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1216 sizeof(ifgr2.ifgr_name)); 1217 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1218 *answer = ifgr2.ifgr_len; 1219 else 1220 *answer = 0; 1221 1222 item.key = strdup(ifg->ifgrq_group); 1223 item.data = answer; 1224 if (hsearch_r(item, ENTER, &ret_item, 1225 &isgroup_map) == 0) 1226 err(1, "interface group query response" 1227 " map insert"); 1228 } 1229 } 1230 } 1231 free(ifgr.ifgr_groups); 1232 } 1233 1234 void 1235 ifa_load(void) 1236 { 1237 struct ifaddrs *ifap, *ifa; 1238 struct node_host *n = NULL, *h = NULL; 1239 1240 if (getifaddrs(&ifap) < 0) 1241 err(1, "getifaddrs"); 1242 1243 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1244 if (!(ifa->ifa_addr->sa_family == AF_INET || 1245 ifa->ifa_addr->sa_family == AF_INET6 || 1246 ifa->ifa_addr->sa_family == AF_LINK)) 1247 continue; 1248 n = calloc(1, sizeof(struct node_host)); 1249 if (n == NULL) 1250 err(1, "address: calloc"); 1251 n->af = ifa->ifa_addr->sa_family; 1252 n->ifa_flags = ifa->ifa_flags; 1253 #ifdef __KAME__ 1254 if (n->af == AF_INET6 && 1255 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1256 ifa->ifa_addr)->sin6_addr) && 1257 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1258 0) { 1259 struct sockaddr_in6 *sin6; 1260 1261 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1262 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1263 sin6->sin6_addr.s6_addr[3]; 1264 sin6->sin6_addr.s6_addr[2] = 0; 1265 sin6->sin6_addr.s6_addr[3] = 0; 1266 } 1267 #endif 1268 n->ifindex = 0; 1269 if (n->af == AF_INET) { 1270 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1271 ifa->ifa_addr)->sin_addr.s_addr, 1272 sizeof(struct in_addr)); 1273 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1274 ifa->ifa_netmask)->sin_addr.s_addr, 1275 sizeof(struct in_addr)); 1276 if (ifa->ifa_broadaddr != NULL) 1277 memcpy(&n->bcast, &((struct sockaddr_in *) 1278 ifa->ifa_broadaddr)->sin_addr.s_addr, 1279 sizeof(struct in_addr)); 1280 if (ifa->ifa_dstaddr != NULL) 1281 memcpy(&n->peer, &((struct sockaddr_in *) 1282 ifa->ifa_dstaddr)->sin_addr.s_addr, 1283 sizeof(struct in_addr)); 1284 } else if (n->af == AF_INET6) { 1285 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1286 ifa->ifa_addr)->sin6_addr.s6_addr, 1287 sizeof(struct in6_addr)); 1288 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1289 ifa->ifa_netmask)->sin6_addr.s6_addr, 1290 sizeof(struct in6_addr)); 1291 if (ifa->ifa_broadaddr != NULL) 1292 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1293 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1294 sizeof(struct in6_addr)); 1295 if (ifa->ifa_dstaddr != NULL) 1296 memcpy(&n->peer, &((struct sockaddr_in6 *) 1297 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1298 sizeof(struct in6_addr)); 1299 n->ifindex = ((struct sockaddr_in6 *) 1300 ifa->ifa_addr)->sin6_scope_id; 1301 } else if (n->af == AF_LINK) { 1302 ifa_add_groups_to_map(ifa->ifa_name); 1303 } 1304 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1305 err(1, "ifa_load: strdup"); 1306 n->next = NULL; 1307 n->tail = n; 1308 if (h == NULL) 1309 h = n; 1310 else { 1311 h->tail->next = n; 1312 h->tail = n; 1313 } 1314 } 1315 1316 iftab = h; 1317 freeifaddrs(ifap); 1318 } 1319 1320 static int 1321 get_socket_domain(void) 1322 { 1323 int sdom; 1324 1325 sdom = AF_UNSPEC; 1326 #ifdef WITH_INET6 1327 if (sdom == AF_UNSPEC && feature_present("inet6")) 1328 sdom = AF_INET6; 1329 #endif 1330 #ifdef WITH_INET 1331 if (sdom == AF_UNSPEC && feature_present("inet")) 1332 sdom = AF_INET; 1333 #endif 1334 if (sdom == AF_UNSPEC) 1335 sdom = AF_LINK; 1336 1337 return (sdom); 1338 } 1339 1340 int 1341 get_query_socket(void) 1342 { 1343 static int s = -1; 1344 1345 if (s == -1) { 1346 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1347 err(1, "socket"); 1348 } 1349 1350 return (s); 1351 } 1352 1353 /* 1354 * Returns the response len if the name is a group, otherwise returns 0. 1355 */ 1356 static int 1357 is_a_group(char *name) 1358 { 1359 ENTRY item; 1360 ENTRY *ret_item; 1361 1362 item.key = name; 1363 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1364 return (0); 1365 1366 return (*(int *)ret_item->data); 1367 } 1368 1369 struct node_host * 1370 ifa_exists(char *ifa_name) 1371 { 1372 struct node_host *n; 1373 1374 if (iftab == NULL) 1375 ifa_load(); 1376 1377 /* check whether this is a group */ 1378 if (is_a_group(ifa_name)) { 1379 /* fake a node_host */ 1380 if ((n = calloc(1, sizeof(*n))) == NULL) 1381 err(1, "calloc"); 1382 if ((n->ifname = strdup(ifa_name)) == NULL) 1383 err(1, "strdup"); 1384 return (n); 1385 } 1386 1387 for (n = iftab; n; n = n->next) { 1388 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1389 return (n); 1390 } 1391 1392 return (NULL); 1393 } 1394 1395 static struct node_host * 1396 if_lookup(char *if_name) 1397 { 1398 struct node_host *p, *n; 1399 1400 for (p = iftab; p; p = p->next) { 1401 if (! strcmp(if_name, p->ifname)) { 1402 n = calloc(1, sizeof(struct node_host)); 1403 bcopy(p, n, sizeof(struct node_host)); 1404 1405 n->next = NULL; 1406 n->tail = n; 1407 1408 return (n); 1409 } 1410 } 1411 1412 return (NULL); 1413 } 1414 1415 struct node_host * 1416 ifa_grouplookup(char *ifa_name, int flags) 1417 { 1418 struct ifg_req *ifg; 1419 struct ifgroupreq ifgr; 1420 int s, len; 1421 struct node_host *n, *h = NULL; 1422 1423 s = get_query_socket(); 1424 len = is_a_group(ifa_name); 1425 if (len == 0) 1426 return (NULL); 1427 bzero(&ifgr, sizeof(ifgr)); 1428 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1429 ifgr.ifgr_len = len; 1430 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1431 err(1, "calloc"); 1432 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1433 err(1, "SIOCGIFGMEMB"); 1434 1435 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1436 ifg++) { 1437 len -= sizeof(struct ifg_req); 1438 if ((n = if_lookup(ifg->ifgrq_member)) == NULL) 1439 continue; 1440 if (h == NULL) 1441 h = n; 1442 else { 1443 h->tail->next = n; 1444 h->tail = n->tail; 1445 } 1446 } 1447 free(ifgr.ifgr_groups); 1448 1449 return (h); 1450 } 1451 1452 struct node_host * 1453 ifa_lookup(char *ifa_name, int flags) 1454 { 1455 struct node_host *p = NULL, *h = NULL, *n = NULL; 1456 int got4 = 0, got6 = 0; 1457 const char *last_if = NULL; 1458 1459 /* first load iftab and isgroup_map */ 1460 if (iftab == NULL) 1461 ifa_load(); 1462 1463 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1464 return (h); 1465 1466 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1467 ifa_name = NULL; 1468 1469 for (p = iftab; p; p = p->next) { 1470 if (ifa_skip_if(ifa_name, p)) 1471 continue; 1472 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1473 continue; 1474 if ((flags & PFI_AFLAG_BROADCAST) && 1475 !(p->ifa_flags & IFF_BROADCAST)) 1476 continue; 1477 if ((flags & PFI_AFLAG_PEER) && 1478 !(p->ifa_flags & IFF_POINTOPOINT)) 1479 continue; 1480 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1481 continue; 1482 if (last_if == NULL || strcmp(last_if, p->ifname)) 1483 got4 = got6 = 0; 1484 last_if = p->ifname; 1485 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1486 continue; 1487 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1488 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1489 continue; 1490 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1491 continue; 1492 if (p->af == AF_INET) 1493 got4 = 1; 1494 else 1495 got6 = 1; 1496 n = calloc(1, sizeof(struct node_host)); 1497 if (n == NULL) 1498 err(1, "address: calloc"); 1499 n->af = p->af; 1500 if (flags & PFI_AFLAG_BROADCAST) 1501 memcpy(&n->addr.v.a.addr, &p->bcast, 1502 sizeof(struct pf_addr)); 1503 else if (flags & PFI_AFLAG_PEER) 1504 memcpy(&n->addr.v.a.addr, &p->peer, 1505 sizeof(struct pf_addr)); 1506 else 1507 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1508 sizeof(struct pf_addr)); 1509 if (flags & PFI_AFLAG_NETWORK) 1510 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1511 else { 1512 if (n->af == AF_INET) { 1513 if (p->ifa_flags & IFF_LOOPBACK && 1514 p->ifa_flags & IFF_LINK1) 1515 memcpy(&n->addr.v.a.mask, 1516 &p->addr.v.a.mask, 1517 sizeof(struct pf_addr)); 1518 else 1519 set_ipmask(n, 32); 1520 } else 1521 set_ipmask(n, 128); 1522 } 1523 n->ifindex = p->ifindex; 1524 n->ifname = strdup(p->ifname); 1525 1526 n->next = NULL; 1527 n->tail = n; 1528 if (h == NULL) 1529 h = n; 1530 else { 1531 h->tail->next = n; 1532 h->tail = n; 1533 } 1534 } 1535 return (h); 1536 } 1537 1538 int 1539 ifa_skip_if(const char *filter, struct node_host *p) 1540 { 1541 int n; 1542 1543 if (p->af != AF_INET && p->af != AF_INET6) 1544 return (1); 1545 if (filter == NULL || !*filter) 1546 return (0); 1547 if (!strcmp(p->ifname, filter)) 1548 return (0); /* exact match */ 1549 n = strlen(filter); 1550 if (n < 1 || n >= IFNAMSIZ) 1551 return (1); /* sanity check */ 1552 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1553 return (1); /* only do exact match in that case */ 1554 if (strncmp(p->ifname, filter, n)) 1555 return (1); /* prefix doesn't match */ 1556 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1557 } 1558 1559 1560 struct node_host * 1561 host(const char *s) 1562 { 1563 struct node_host *h = NULL; 1564 int mask, v4mask, v6mask, cont = 1; 1565 char *p, *q, *ps; 1566 1567 if ((p = strrchr(s, '/')) != NULL) { 1568 mask = strtol(p+1, &q, 0); 1569 if (!q || *q || mask > 128 || q == (p+1)) { 1570 fprintf(stderr, "invalid netmask '%s'\n", p); 1571 return (NULL); 1572 } 1573 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1574 err(1, "host: malloc"); 1575 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1576 v4mask = v6mask = mask; 1577 } else { 1578 if ((ps = strdup(s)) == NULL) 1579 err(1, "host: strdup"); 1580 v4mask = 32; 1581 v6mask = 128; 1582 mask = -1; 1583 } 1584 1585 /* IPv4 address? */ 1586 if (cont && (h = host_v4(s, mask)) != NULL) 1587 cont = 0; 1588 1589 /* IPv6 address? */ 1590 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1591 cont = 0; 1592 1593 /* interface with this name exists? */ 1594 /* expensive with thousands of interfaces - prioritze IPv4/6 check */ 1595 if (cont && (h = host_if(ps, mask)) != NULL) 1596 cont = 0; 1597 1598 /* dns lookup */ 1599 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1600 cont = 0; 1601 free(ps); 1602 1603 if (h == NULL || cont == 1) { 1604 fprintf(stderr, "no IP address found for %s\n", s); 1605 return (NULL); 1606 } 1607 return (h); 1608 } 1609 1610 struct node_host * 1611 host_if(const char *s, int mask) 1612 { 1613 struct node_host *n, *h = NULL; 1614 char *p, *ps; 1615 int flags = 0; 1616 1617 if ((ps = strdup(s)) == NULL) 1618 err(1, "host_if: strdup"); 1619 while ((p = strrchr(ps, ':')) != NULL) { 1620 if (!strcmp(p+1, "network")) 1621 flags |= PFI_AFLAG_NETWORK; 1622 else if (!strcmp(p+1, "broadcast")) 1623 flags |= PFI_AFLAG_BROADCAST; 1624 else if (!strcmp(p+1, "peer")) 1625 flags |= PFI_AFLAG_PEER; 1626 else if (!strcmp(p+1, "0")) 1627 flags |= PFI_AFLAG_NOALIAS; 1628 else { 1629 free(ps); 1630 return (NULL); 1631 } 1632 *p = '\0'; 1633 } 1634 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1635 fprintf(stderr, "illegal combination of interface modifiers\n"); 1636 free(ps); 1637 return (NULL); 1638 } 1639 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1640 fprintf(stderr, "network or broadcast lookup, but " 1641 "extra netmask given\n"); 1642 free(ps); 1643 return (NULL); 1644 } 1645 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1646 /* interface with this name exists */ 1647 h = ifa_lookup(ps, flags); 1648 for (n = h; n != NULL && mask > -1; n = n->next) 1649 set_ipmask(n, mask); 1650 } 1651 1652 free(ps); 1653 return (h); 1654 } 1655 1656 struct node_host * 1657 host_v4(const char *s, int mask) 1658 { 1659 struct node_host *h = NULL; 1660 struct in_addr ina; 1661 int bits = 32; 1662 1663 memset(&ina, 0, sizeof(struct in_addr)); 1664 if (strrchr(s, '/') != NULL) { 1665 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1666 return (NULL); 1667 } else { 1668 if (inet_pton(AF_INET, s, &ina) != 1) 1669 return (NULL); 1670 } 1671 1672 h = calloc(1, sizeof(struct node_host)); 1673 if (h == NULL) 1674 err(1, "address: calloc"); 1675 h->ifname = NULL; 1676 h->af = AF_INET; 1677 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1678 set_ipmask(h, bits); 1679 h->next = NULL; 1680 h->tail = h; 1681 1682 return (h); 1683 } 1684 1685 struct node_host * 1686 host_v6(const char *s, int mask) 1687 { 1688 struct addrinfo hints, *res; 1689 struct node_host *h = NULL; 1690 1691 memset(&hints, 0, sizeof(hints)); 1692 hints.ai_family = AF_INET6; 1693 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1694 hints.ai_flags = AI_NUMERICHOST; 1695 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1696 h = calloc(1, sizeof(struct node_host)); 1697 if (h == NULL) 1698 err(1, "address: calloc"); 1699 h->ifname = NULL; 1700 h->af = AF_INET6; 1701 memcpy(&h->addr.v.a.addr, 1702 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1703 sizeof(h->addr.v.a.addr)); 1704 h->ifindex = 1705 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1706 set_ipmask(h, mask); 1707 freeaddrinfo(res); 1708 h->next = NULL; 1709 h->tail = h; 1710 } 1711 1712 return (h); 1713 } 1714 1715 struct node_host * 1716 host_dns(const char *s, int v4mask, int v6mask) 1717 { 1718 struct addrinfo hints, *res0, *res; 1719 struct node_host *n, *h = NULL; 1720 int error, noalias = 0; 1721 int got4 = 0, got6 = 0; 1722 char *p, *ps; 1723 1724 if ((ps = strdup(s)) == NULL) 1725 err(1, "host_dns: strdup"); 1726 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1727 noalias = 1; 1728 *p = '\0'; 1729 } 1730 memset(&hints, 0, sizeof(hints)); 1731 hints.ai_family = PF_UNSPEC; 1732 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1733 error = getaddrinfo(ps, NULL, &hints, &res0); 1734 if (error) { 1735 free(ps); 1736 return (h); 1737 } 1738 1739 for (res = res0; res; res = res->ai_next) { 1740 if (res->ai_family != AF_INET && 1741 res->ai_family != AF_INET6) 1742 continue; 1743 if (noalias) { 1744 if (res->ai_family == AF_INET) { 1745 if (got4) 1746 continue; 1747 got4 = 1; 1748 } else { 1749 if (got6) 1750 continue; 1751 got6 = 1; 1752 } 1753 } 1754 n = calloc(1, sizeof(struct node_host)); 1755 if (n == NULL) 1756 err(1, "host_dns: calloc"); 1757 n->ifname = NULL; 1758 n->af = res->ai_family; 1759 if (res->ai_family == AF_INET) { 1760 memcpy(&n->addr.v.a.addr, 1761 &((struct sockaddr_in *) 1762 res->ai_addr)->sin_addr.s_addr, 1763 sizeof(struct in_addr)); 1764 set_ipmask(n, v4mask); 1765 } else { 1766 memcpy(&n->addr.v.a.addr, 1767 &((struct sockaddr_in6 *) 1768 res->ai_addr)->sin6_addr.s6_addr, 1769 sizeof(struct in6_addr)); 1770 n->ifindex = 1771 ((struct sockaddr_in6 *) 1772 res->ai_addr)->sin6_scope_id; 1773 set_ipmask(n, v6mask); 1774 } 1775 n->next = NULL; 1776 n->tail = n; 1777 if (h == NULL) 1778 h = n; 1779 else { 1780 h->tail->next = n; 1781 h->tail = n; 1782 } 1783 } 1784 freeaddrinfo(res0); 1785 free(ps); 1786 1787 return (h); 1788 } 1789 1790 /* 1791 * convert a hostname to a list of addresses and put them in the given buffer. 1792 * test: 1793 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1794 */ 1795 int 1796 append_addr(struct pfr_buffer *b, char *s, int test) 1797 { 1798 char *r; 1799 struct node_host *h, *n; 1800 int rv, not = 0; 1801 1802 for (r = s; *r == '!'; r++) 1803 not = !not; 1804 if ((n = host(r)) == NULL) { 1805 errno = 0; 1806 return (-1); 1807 } 1808 rv = append_addr_host(b, n, test, not); 1809 do { 1810 h = n; 1811 n = n->next; 1812 free(h); 1813 } while (n != NULL); 1814 return (rv); 1815 } 1816 1817 /* 1818 * same as previous function, but with a pre-parsed input and the ability 1819 * to "negate" the result. Does not free the node_host list. 1820 * not: 1821 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1822 */ 1823 int 1824 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1825 { 1826 int bits; 1827 struct pfr_addr addr; 1828 1829 do { 1830 bzero(&addr, sizeof(addr)); 1831 addr.pfra_not = n->not ^ not; 1832 addr.pfra_af = n->af; 1833 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1834 switch (n->af) { 1835 case AF_INET: 1836 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1837 bits = 32; 1838 break; 1839 case AF_INET6: 1840 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1841 sizeof(struct in6_addr)); 1842 bits = 128; 1843 break; 1844 default: 1845 errno = EINVAL; 1846 return (-1); 1847 } 1848 if ((test && (not || addr.pfra_net != bits)) || 1849 addr.pfra_net > bits) { 1850 errno = EINVAL; 1851 return (-1); 1852 } 1853 if (pfr_buf_add(b, &addr)) 1854 return (-1); 1855 } while ((n = n->next) != NULL); 1856 1857 return (0); 1858 } 1859 1860 int 1861 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1862 { 1863 struct pfioc_trans_e trans; 1864 1865 bzero(&trans, sizeof(trans)); 1866 trans.rs_num = rs_num; 1867 if (strlcpy(trans.anchor, anchor, 1868 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1869 errx(1, "pfctl_add_trans: strlcpy"); 1870 1871 return pfr_buf_add(buf, &trans); 1872 } 1873 1874 u_int32_t 1875 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1876 { 1877 struct pfioc_trans_e *p; 1878 1879 PFRB_FOREACH(p, buf) 1880 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1881 return (p->ticket); 1882 errx(1, "pfctl_get_ticket: assertion failed"); 1883 } 1884 1885 int 1886 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1887 { 1888 struct pfioc_trans trans; 1889 1890 bzero(&trans, sizeof(trans)); 1891 trans.size = buf->pfrb_size - from; 1892 trans.esize = sizeof(struct pfioc_trans_e); 1893 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1894 return ioctl(dev, cmd, &trans); 1895 } 1896