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, int opts) 501 { 502 char statline[80], *running; 503 time_t runtime; 504 int i; 505 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 506 static const char hex[] = "0123456789abcdef"; 507 508 runtime = time(NULL) - s->since; 509 running = s->running ? "Enabled" : "Disabled"; 510 511 if (s->since) { 512 unsigned int sec, min, hrs, day = runtime; 513 514 sec = day % 60; 515 day /= 60; 516 min = day % 60; 517 day /= 60; 518 hrs = day % 24; 519 day /= 24; 520 snprintf(statline, sizeof(statline), 521 "Status: %s for %u days %.2u:%.2u:%.2u", 522 running, day, hrs, min, sec); 523 } else 524 snprintf(statline, sizeof(statline), "Status: %s", running); 525 printf("%-44s", statline); 526 switch (s->debug) { 527 case PF_DEBUG_NONE: 528 printf("%15s\n\n", "Debug: None"); 529 break; 530 case PF_DEBUG_URGENT: 531 printf("%15s\n\n", "Debug: Urgent"); 532 break; 533 case PF_DEBUG_MISC: 534 printf("%15s\n\n", "Debug: Misc"); 535 break; 536 case PF_DEBUG_NOISY: 537 printf("%15s\n\n", "Debug: Loud"); 538 break; 539 } 540 541 if (opts & PF_OPT_VERBOSE) { 542 printf("Hostid: 0x%08x\n", ntohl(s->hostid)); 543 544 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 545 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 546 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 547 } 548 buf[i + i] = '\0'; 549 printf("Checksum: 0x%s\n\n", buf); 550 } 551 552 if (s->ifname[0] != 0) { 553 printf("Interface Stats for %-16s %5s %16s\n", 554 s->ifname, "IPv4", "IPv6"); 555 printf(" %-25s %14llu %16llu\n", "Bytes In", 556 (unsigned long long)s->bcounters[0][0], 557 (unsigned long long)s->bcounters[1][0]); 558 printf(" %-25s %14llu %16llu\n", "Bytes Out", 559 (unsigned long long)s->bcounters[0][1], 560 (unsigned long long)s->bcounters[1][1]); 561 printf(" Packets In\n"); 562 printf(" %-23s %14llu %16llu\n", "Passed", 563 (unsigned long long)s->pcounters[0][0][PF_PASS], 564 (unsigned long long)s->pcounters[1][0][PF_PASS]); 565 printf(" %-23s %14llu %16llu\n", "Blocked", 566 (unsigned long long)s->pcounters[0][0][PF_DROP], 567 (unsigned long long)s->pcounters[1][0][PF_DROP]); 568 printf(" Packets Out\n"); 569 printf(" %-23s %14llu %16llu\n", "Passed", 570 (unsigned long long)s->pcounters[0][1][PF_PASS], 571 (unsigned long long)s->pcounters[1][1][PF_PASS]); 572 printf(" %-23s %14llu %16llu\n\n", "Blocked", 573 (unsigned long long)s->pcounters[0][1][PF_DROP], 574 (unsigned long long)s->pcounters[1][1][PF_DROP]); 575 } 576 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 577 printf(" %-25s %14u %14s\n", "current entries", s->states, ""); 578 for (i = 0; i < FCNT_MAX; i++) { 579 printf(" %-25s %14llu ", pf_fcounters[i], 580 (unsigned long long)s->fcounters[i]); 581 if (runtime > 0) 582 printf("%14.1f/s\n", 583 (double)s->fcounters[i] / (double)runtime); 584 else 585 printf("%14s\n", ""); 586 } 587 if (opts & PF_OPT_VERBOSE) { 588 printf("Source Tracking Table\n"); 589 printf(" %-25s %14u %14s\n", "current entries", 590 s->src_nodes, ""); 591 for (i = 0; i < SCNT_MAX; i++) { 592 printf(" %-25s %14lld ", pf_scounters[i], 593 #ifdef __FreeBSD__ 594 (long long)s->scounters[i]); 595 #else 596 s->scounters[i]); 597 #endif 598 if (runtime > 0) 599 printf("%14.1f/s\n", 600 (double)s->scounters[i] / (double)runtime); 601 else 602 printf("%14s\n", ""); 603 } 604 } 605 printf("Counters\n"); 606 for (i = 0; i < PFRES_MAX; i++) { 607 printf(" %-25s %14llu ", pf_reasons[i], 608 (unsigned long long)s->counters[i]); 609 if (runtime > 0) 610 printf("%14.1f/s\n", 611 (double)s->counters[i] / (double)runtime); 612 else 613 printf("%14s\n", ""); 614 } 615 if (opts & PF_OPT_VERBOSE) { 616 printf("Limit Counters\n"); 617 for (i = 0; i < LCNT_MAX; i++) { 618 printf(" %-25s %14lld ", pf_lcounters[i], 619 #ifdef __FreeBSD__ 620 (unsigned long long)s->lcounters[i]); 621 #else 622 s->lcounters[i]); 623 #endif 624 if (runtime > 0) 625 printf("%14.1f/s\n", 626 (double)s->lcounters[i] / (double)runtime); 627 else 628 printf("%14s\n", ""); 629 } 630 } 631 } 632 633 void 634 print_running(struct pf_status *status) 635 { 636 printf("%s\n", status->running ? "Enabled" : "Disabled"); 637 } 638 639 void 640 print_src_node(struct pf_src_node *sn, int opts) 641 { 642 struct pf_addr_wrap aw; 643 int min, sec; 644 645 memset(&aw, 0, sizeof(aw)); 646 if (sn->af == AF_INET) 647 aw.v.a.mask.addr32[0] = 0xffffffff; 648 else 649 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 650 651 aw.v.a.addr = sn->addr; 652 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 653 printf(" -> "); 654 aw.v.a.addr = sn->raddr; 655 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 656 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 657 sn->conn, sn->conn_rate.count / 1000, 658 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 659 if (opts & PF_OPT_VERBOSE) { 660 sec = sn->creation % 60; 661 sn->creation /= 60; 662 min = sn->creation % 60; 663 sn->creation /= 60; 664 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 665 if (sn->states == 0) { 666 sec = sn->expire % 60; 667 sn->expire /= 60; 668 min = sn->expire % 60; 669 sn->expire /= 60; 670 printf(", expires in %.2u:%.2u:%.2u", 671 sn->expire, min, sec); 672 } 673 printf(", %llu pkts, %llu bytes", 674 #ifdef __FreeBSD__ 675 (unsigned long long)(sn->packets[0] + sn->packets[1]), 676 (unsigned long long)(sn->bytes[0] + sn->bytes[1])); 677 #else 678 sn->packets[0] + sn->packets[1], 679 sn->bytes[0] + sn->bytes[1]); 680 #endif 681 switch (sn->ruletype) { 682 case PF_NAT: 683 if (sn->rule.nr != -1) 684 printf(", nat rule %u", sn->rule.nr); 685 break; 686 case PF_RDR: 687 if (sn->rule.nr != -1) 688 printf(", rdr rule %u", sn->rule.nr); 689 break; 690 case PF_PASS: 691 if (sn->rule.nr != -1) 692 printf(", filter rule %u", sn->rule.nr); 693 break; 694 } 695 printf("\n"); 696 } 697 } 698 699 void 700 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric) 701 { 702 static const char *actiontypes[] = { "pass", "block", "scrub", 703 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" }; 704 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 705 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 706 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 707 int i, opts; 708 709 if (verbose) 710 printf("@%d ", r->nr); 711 if (r->action == PF_MATCH) 712 printf("match"); 713 else if (r->action > PF_NORDR) 714 printf("action(%d)", r->action); 715 else if (anchor_call[0]) { 716 if (anchor_call[0] == '_') { 717 printf("%s", anchortypes[r->action]); 718 } else 719 printf("%s \"%s\"", anchortypes[r->action], 720 anchor_call); 721 } else { 722 printf("%s", actiontypes[r->action]); 723 if (r->natpass) 724 printf(" pass"); 725 } 726 if (r->action == PF_DROP) { 727 if (r->rule_flag & PFRULE_RETURN) 728 printf(" return"); 729 else if (r->rule_flag & PFRULE_RETURNRST) { 730 if (!r->return_ttl) 731 printf(" return-rst"); 732 else 733 printf(" return-rst(ttl %d)", r->return_ttl); 734 } else if (r->rule_flag & PFRULE_RETURNICMP) { 735 const struct icmpcodeent *ic, *ic6; 736 737 ic = geticmpcodebynumber(r->return_icmp >> 8, 738 r->return_icmp & 255, AF_INET); 739 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 740 r->return_icmp6 & 255, AF_INET6); 741 742 switch (r->af) { 743 case AF_INET: 744 printf(" return-icmp"); 745 if (ic == NULL) 746 printf("(%u)", r->return_icmp & 255); 747 else 748 printf("(%s)", ic->name); 749 break; 750 case AF_INET6: 751 printf(" return-icmp6"); 752 if (ic6 == NULL) 753 printf("(%u)", r->return_icmp6 & 255); 754 else 755 printf("(%s)", ic6->name); 756 break; 757 default: 758 printf(" return-icmp"); 759 if (ic == NULL) 760 printf("(%u, ", r->return_icmp & 255); 761 else 762 printf("(%s, ", ic->name); 763 if (ic6 == NULL) 764 printf("%u)", r->return_icmp6 & 255); 765 else 766 printf("%s)", ic6->name); 767 break; 768 } 769 } else 770 printf(" drop"); 771 } 772 if (r->direction == PF_IN) 773 printf(" in"); 774 else if (r->direction == PF_OUT) 775 printf(" out"); 776 if (r->log) { 777 printf(" log"); 778 if (r->log & ~PF_LOG || r->logif) { 779 int count = 0; 780 781 printf(" ("); 782 if (r->log & PF_LOG_ALL) 783 printf("%sall", count++ ? ", " : ""); 784 if (r->log & PF_LOG_SOCKET_LOOKUP) 785 printf("%suser", count++ ? ", " : ""); 786 if (r->logif) 787 printf("%sto pflog%u", count++ ? ", " : "", 788 r->logif); 789 printf(")"); 790 } 791 } 792 if (r->quick) 793 printf(" quick"); 794 if (r->ifname[0]) { 795 if (r->ifnot) 796 printf(" on ! %s", r->ifname); 797 else 798 printf(" on %s", r->ifname); 799 } 800 if (r->rt) { 801 if (r->rt == PF_ROUTETO) 802 printf(" route-to"); 803 else if (r->rt == PF_REPLYTO) 804 printf(" reply-to"); 805 else if (r->rt == PF_DUPTO) 806 printf(" dup-to"); 807 printf(" "); 808 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 809 } 810 if (r->af) { 811 if (r->af == AF_INET) 812 printf(" inet"); 813 else 814 printf(" inet6"); 815 } 816 if (r->proto) { 817 const char *protoname; 818 819 if ((protoname = pfctl_proto2name(r->proto)) != NULL) 820 printf(" proto %s", protoname); 821 else 822 printf(" proto %u", r->proto); 823 } 824 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 825 verbose, numeric); 826 if (r->uid.op) 827 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 828 UID_MAX); 829 if (r->gid.op) 830 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 831 GID_MAX); 832 if (r->flags || r->flagset) { 833 printf(" flags "); 834 print_flags(r->flags); 835 printf("/"); 836 print_flags(r->flagset); 837 } else if (r->action == PF_PASS && 838 (!r->proto || r->proto == IPPROTO_TCP) && 839 !(r->rule_flag & PFRULE_FRAGMENT) && 840 !anchor_call[0] && r->keep_state) 841 printf(" flags any"); 842 if (r->type) { 843 const struct icmptypeent *it; 844 845 it = geticmptypebynumber(r->type-1, r->af); 846 if (r->af != AF_INET6) 847 printf(" icmp-type"); 848 else 849 printf(" icmp6-type"); 850 if (it != NULL) 851 printf(" %s", it->name); 852 else 853 printf(" %u", r->type-1); 854 if (r->code) { 855 const struct icmpcodeent *ic; 856 857 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 858 if (ic != NULL) 859 printf(" code %s", ic->name); 860 else 861 printf(" code %u", r->code-1); 862 } 863 } 864 if (r->tos) 865 printf(" tos 0x%2.2x", r->tos); 866 if (r->prio) 867 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 868 if (r->scrub_flags & PFSTATE_SETMASK) { 869 char *comma = ""; 870 printf(" set ("); 871 if (r->scrub_flags & PFSTATE_SETPRIO) { 872 if (r->set_prio[0] == r->set_prio[1]) 873 printf("%s prio %u", comma, r->set_prio[0]); 874 else 875 printf("%s prio(%u, %u)", comma, r->set_prio[0], 876 r->set_prio[1]); 877 comma = ","; 878 } 879 printf(" )"); 880 } 881 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 882 printf(" no state"); 883 else if (r->keep_state == PF_STATE_NORMAL) 884 printf(" keep state"); 885 else if (r->keep_state == PF_STATE_MODULATE) 886 printf(" modulate state"); 887 else if (r->keep_state == PF_STATE_SYNPROXY) 888 printf(" synproxy state"); 889 if (r->prob) { 890 char buf[20]; 891 892 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 893 for (i = strlen(buf)-1; i > 0; i--) { 894 if (buf[i] == '0') 895 buf[i] = '\0'; 896 else { 897 if (buf[i] == '.') 898 buf[i] = '\0'; 899 break; 900 } 901 } 902 printf(" probability %s%%", buf); 903 } 904 opts = 0; 905 if (r->max_states || r->max_src_nodes || r->max_src_states) 906 opts = 1; 907 if (r->rule_flag & PFRULE_NOSYNC) 908 opts = 1; 909 if (r->rule_flag & PFRULE_SRCTRACK) 910 opts = 1; 911 if (r->rule_flag & PFRULE_IFBOUND) 912 opts = 1; 913 if (r->rule_flag & PFRULE_STATESLOPPY) 914 opts = 1; 915 for (i = 0; !opts && i < PFTM_MAX; ++i) 916 if (r->timeout[i]) 917 opts = 1; 918 if (opts) { 919 printf(" ("); 920 if (r->max_states) { 921 printf("max %u", r->max_states); 922 opts = 0; 923 } 924 if (r->rule_flag & PFRULE_NOSYNC) { 925 if (!opts) 926 printf(", "); 927 printf("no-sync"); 928 opts = 0; 929 } 930 if (r->rule_flag & PFRULE_SRCTRACK) { 931 if (!opts) 932 printf(", "); 933 printf("source-track"); 934 if (r->rule_flag & PFRULE_RULESRCTRACK) 935 printf(" rule"); 936 else 937 printf(" global"); 938 opts = 0; 939 } 940 if (r->max_src_states) { 941 if (!opts) 942 printf(", "); 943 printf("max-src-states %u", r->max_src_states); 944 opts = 0; 945 } 946 if (r->max_src_conn) { 947 if (!opts) 948 printf(", "); 949 printf("max-src-conn %u", r->max_src_conn); 950 opts = 0; 951 } 952 if (r->max_src_conn_rate.limit) { 953 if (!opts) 954 printf(", "); 955 printf("max-src-conn-rate %u/%u", 956 r->max_src_conn_rate.limit, 957 r->max_src_conn_rate.seconds); 958 opts = 0; 959 } 960 if (r->max_src_nodes) { 961 if (!opts) 962 printf(", "); 963 printf("max-src-nodes %u", r->max_src_nodes); 964 opts = 0; 965 } 966 if (r->overload_tblname[0]) { 967 if (!opts) 968 printf(", "); 969 printf("overload <%s>", r->overload_tblname); 970 if (r->flush) 971 printf(" flush"); 972 if (r->flush & PF_FLUSH_GLOBAL) 973 printf(" global"); 974 } 975 if (r->rule_flag & PFRULE_IFBOUND) { 976 if (!opts) 977 printf(", "); 978 printf("if-bound"); 979 opts = 0; 980 } 981 if (r->rule_flag & PFRULE_STATESLOPPY) { 982 if (!opts) 983 printf(", "); 984 printf("sloppy"); 985 opts = 0; 986 } 987 for (i = 0; i < PFTM_MAX; ++i) 988 if (r->timeout[i]) { 989 int j; 990 991 if (!opts) 992 printf(", "); 993 opts = 0; 994 for (j = 0; pf_timeouts[j].name != NULL; 995 ++j) 996 if (pf_timeouts[j].timeout == i) 997 break; 998 printf("%s %u", pf_timeouts[j].name == NULL ? 999 "inv.timeout" : pf_timeouts[j].name, 1000 r->timeout[i]); 1001 } 1002 printf(")"); 1003 } 1004 if (r->rule_flag & PFRULE_FRAGMENT) 1005 printf(" fragment"); 1006 if (r->rule_flag & PFRULE_NODF) 1007 printf(" no-df"); 1008 if (r->rule_flag & PFRULE_RANDOMID) 1009 printf(" random-id"); 1010 if (r->min_ttl) 1011 printf(" min-ttl %d", r->min_ttl); 1012 if (r->max_mss) 1013 printf(" max-mss %d", r->max_mss); 1014 if (r->rule_flag & PFRULE_SET_TOS) 1015 printf(" set-tos 0x%2.2x", r->set_tos); 1016 if (r->allow_opts) 1017 printf(" allow-opts"); 1018 if (r->action == PF_SCRUB) { 1019 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1020 printf(" reassemble tcp"); 1021 1022 printf(" fragment reassemble"); 1023 } 1024 i = 0; 1025 while (r->label[i][0]) 1026 printf(" label \"%s\"", r->label[i++]); 1027 if (r->qname[0] && r->pqname[0]) 1028 printf(" queue(%s, %s)", r->qname, r->pqname); 1029 else if (r->qname[0]) 1030 printf(" queue %s", r->qname); 1031 if (r->tagname[0]) 1032 printf(" tag %s", r->tagname); 1033 if (r->match_tagname[0]) { 1034 if (r->match_tag_not) 1035 printf(" !"); 1036 printf(" tagged %s", r->match_tagname); 1037 } 1038 if (r->rtableid != -1) 1039 printf(" rtable %u", r->rtableid); 1040 if (r->divert.port) { 1041 #ifdef __FreeBSD__ 1042 printf(" divert-to %u", ntohs(r->divert.port)); 1043 #else 1044 if (PF_AZERO(&r->divert.addr, r->af)) { 1045 printf(" divert-reply"); 1046 } else { 1047 /* XXX cut&paste from print_addr */ 1048 char buf[48]; 1049 1050 printf(" divert-to "); 1051 if (inet_ntop(r->af, &r->divert.addr, buf, 1052 sizeof(buf)) == NULL) 1053 printf("?"); 1054 else 1055 printf("%s", buf); 1056 printf(" port %u", ntohs(r->divert.port)); 1057 } 1058 #endif 1059 } 1060 if (!anchor_call[0] && (r->action == PF_NAT || 1061 r->action == PF_BINAT || r->action == PF_RDR)) { 1062 printf(" -> "); 1063 print_pool(&r->rpool, r->rpool.proxy_port[0], 1064 r->rpool.proxy_port[1], r->af, r->action); 1065 } 1066 } 1067 1068 void 1069 print_tabledef(const char *name, int flags, int addrs, 1070 struct node_tinithead *nodes) 1071 { 1072 struct node_tinit *ti, *nti; 1073 struct node_host *h; 1074 1075 printf("table <%s>", name); 1076 if (flags & PFR_TFLAG_CONST) 1077 printf(" const"); 1078 if (flags & PFR_TFLAG_PERSIST) 1079 printf(" persist"); 1080 if (flags & PFR_TFLAG_COUNTERS) 1081 printf(" counters"); 1082 SIMPLEQ_FOREACH(ti, nodes, entries) { 1083 if (ti->file) { 1084 printf(" file \"%s\"", ti->file); 1085 continue; 1086 } 1087 printf(" {"); 1088 for (;;) { 1089 for (h = ti->host; h != NULL; h = h->next) { 1090 printf(h->not ? " !" : " "); 1091 print_addr(&h->addr, h->af, 0); 1092 } 1093 nti = SIMPLEQ_NEXT(ti, entries); 1094 if (nti != NULL && nti->file == NULL) 1095 ti = nti; /* merge lists */ 1096 else 1097 break; 1098 } 1099 printf(" }"); 1100 } 1101 if (addrs && SIMPLEQ_EMPTY(nodes)) 1102 printf(" { }"); 1103 printf("\n"); 1104 } 1105 1106 int 1107 parse_flags(char *s) 1108 { 1109 char *p, *q; 1110 u_int8_t f = 0; 1111 1112 for (p = s; *p; p++) { 1113 if ((q = strchr(tcpflags, *p)) == NULL) 1114 return -1; 1115 else 1116 f |= 1 << (q - tcpflags); 1117 } 1118 return (f ? f : PF_TH_ALL); 1119 } 1120 1121 void 1122 set_ipmask(struct node_host *h, u_int8_t b) 1123 { 1124 struct pf_addr *m, *n; 1125 int i, j = 0; 1126 1127 m = &h->addr.v.a.mask; 1128 memset(m, 0, sizeof(*m)); 1129 1130 while (b >= 32) { 1131 m->addr32[j++] = 0xffffffff; 1132 b -= 32; 1133 } 1134 for (i = 31; i > 31-b; --i) 1135 m->addr32[j] |= (1 << i); 1136 if (b) 1137 m->addr32[j] = htonl(m->addr32[j]); 1138 1139 /* Mask off bits of the address that will never be used. */ 1140 n = &h->addr.v.a.addr; 1141 if (h->addr.type == PF_ADDR_ADDRMASK) 1142 for (i = 0; i < 4; i++) 1143 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1144 } 1145 1146 int 1147 check_netmask(struct node_host *h, sa_family_t af) 1148 { 1149 struct node_host *n = NULL; 1150 struct pf_addr *m; 1151 1152 for (n = h; n != NULL; n = n->next) { 1153 if (h->addr.type == PF_ADDR_TABLE) 1154 continue; 1155 m = &h->addr.v.a.mask; 1156 /* fix up netmask for dynaddr */ 1157 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1158 unmask(m, AF_INET6) > 32) 1159 set_ipmask(n, 32); 1160 /* netmasks > 32 bit are invalid on v4 */ 1161 if (af == AF_INET && 1162 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1163 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1164 unmask(m, AF_INET6)); 1165 return (1); 1166 } 1167 } 1168 return (0); 1169 } 1170 1171 /* interface lookup routines */ 1172 1173 static struct node_host *iftab; 1174 1175 /* 1176 * Retrieve the list of groups this interface is a member of and make sure 1177 * each group is in the group map. 1178 */ 1179 static void 1180 ifa_add_groups_to_map(char *ifa_name) 1181 { 1182 int s, len; 1183 struct ifgroupreq ifgr; 1184 struct ifg_req *ifg; 1185 1186 s = get_query_socket(); 1187 1188 /* Get size of group list for this interface */ 1189 memset(&ifgr, 0, sizeof(ifgr)); 1190 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1191 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1192 err(1, "SIOCGIFGROUP"); 1193 1194 /* Retrieve group list for this interface */ 1195 len = ifgr.ifgr_len; 1196 ifgr.ifgr_groups = 1197 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1198 sizeof(struct ifg_req)); 1199 if (ifgr.ifgr_groups == NULL) 1200 err(1, "calloc"); 1201 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1202 err(1, "SIOCGIFGROUP"); 1203 1204 ifg = ifgr.ifgr_groups; 1205 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1206 len -= sizeof(struct ifg_req); 1207 if (strcmp(ifg->ifgrq_group, "all")) { 1208 ENTRY item; 1209 ENTRY *ret_item; 1210 int *answer; 1211 1212 item.key = ifg->ifgrq_group; 1213 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1214 struct ifgroupreq ifgr2; 1215 1216 /* Don't know the answer yet */ 1217 if ((answer = malloc(sizeof(int))) == NULL) 1218 err(1, "malloc"); 1219 1220 bzero(&ifgr2, sizeof(ifgr2)); 1221 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1222 sizeof(ifgr2.ifgr_name)); 1223 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1224 *answer = ifgr2.ifgr_len; 1225 else 1226 *answer = 0; 1227 1228 item.key = strdup(ifg->ifgrq_group); 1229 item.data = answer; 1230 if (hsearch_r(item, ENTER, &ret_item, 1231 &isgroup_map) == 0) 1232 err(1, "interface group query response" 1233 " map insert"); 1234 } 1235 } 1236 } 1237 free(ifgr.ifgr_groups); 1238 } 1239 1240 void 1241 ifa_load(void) 1242 { 1243 struct ifaddrs *ifap, *ifa; 1244 struct node_host *n = NULL, *h = NULL; 1245 1246 if (getifaddrs(&ifap) < 0) 1247 err(1, "getifaddrs"); 1248 1249 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1250 if (!(ifa->ifa_addr->sa_family == AF_INET || 1251 ifa->ifa_addr->sa_family == AF_INET6 || 1252 ifa->ifa_addr->sa_family == AF_LINK)) 1253 continue; 1254 n = calloc(1, sizeof(struct node_host)); 1255 if (n == NULL) 1256 err(1, "address: calloc"); 1257 n->af = ifa->ifa_addr->sa_family; 1258 n->ifa_flags = ifa->ifa_flags; 1259 #ifdef __KAME__ 1260 if (n->af == AF_INET6 && 1261 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1262 ifa->ifa_addr)->sin6_addr) && 1263 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1264 0) { 1265 struct sockaddr_in6 *sin6; 1266 1267 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1268 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1269 sin6->sin6_addr.s6_addr[3]; 1270 sin6->sin6_addr.s6_addr[2] = 0; 1271 sin6->sin6_addr.s6_addr[3] = 0; 1272 } 1273 #endif 1274 n->ifindex = 0; 1275 if (n->af == AF_INET) { 1276 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1277 ifa->ifa_addr)->sin_addr.s_addr, 1278 sizeof(struct in_addr)); 1279 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1280 ifa->ifa_netmask)->sin_addr.s_addr, 1281 sizeof(struct in_addr)); 1282 if (ifa->ifa_broadaddr != NULL) 1283 memcpy(&n->bcast, &((struct sockaddr_in *) 1284 ifa->ifa_broadaddr)->sin_addr.s_addr, 1285 sizeof(struct in_addr)); 1286 if (ifa->ifa_dstaddr != NULL) 1287 memcpy(&n->peer, &((struct sockaddr_in *) 1288 ifa->ifa_dstaddr)->sin_addr.s_addr, 1289 sizeof(struct in_addr)); 1290 } else if (n->af == AF_INET6) { 1291 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1292 ifa->ifa_addr)->sin6_addr.s6_addr, 1293 sizeof(struct in6_addr)); 1294 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1295 ifa->ifa_netmask)->sin6_addr.s6_addr, 1296 sizeof(struct in6_addr)); 1297 if (ifa->ifa_broadaddr != NULL) 1298 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1299 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1300 sizeof(struct in6_addr)); 1301 if (ifa->ifa_dstaddr != NULL) 1302 memcpy(&n->peer, &((struct sockaddr_in6 *) 1303 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1304 sizeof(struct in6_addr)); 1305 n->ifindex = ((struct sockaddr_in6 *) 1306 ifa->ifa_addr)->sin6_scope_id; 1307 } else if (n->af == AF_LINK) { 1308 ifa_add_groups_to_map(ifa->ifa_name); 1309 } 1310 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1311 err(1, "ifa_load: strdup"); 1312 n->next = NULL; 1313 n->tail = n; 1314 if (h == NULL) 1315 h = n; 1316 else { 1317 h->tail->next = n; 1318 h->tail = n; 1319 } 1320 } 1321 1322 iftab = h; 1323 freeifaddrs(ifap); 1324 } 1325 1326 static int 1327 get_socket_domain(void) 1328 { 1329 int sdom; 1330 1331 sdom = AF_UNSPEC; 1332 #ifdef WITH_INET6 1333 if (sdom == AF_UNSPEC && feature_present("inet6")) 1334 sdom = AF_INET6; 1335 #endif 1336 #ifdef WITH_INET 1337 if (sdom == AF_UNSPEC && feature_present("inet")) 1338 sdom = AF_INET; 1339 #endif 1340 if (sdom == AF_UNSPEC) 1341 sdom = AF_LINK; 1342 1343 return (sdom); 1344 } 1345 1346 int 1347 get_query_socket(void) 1348 { 1349 static int s = -1; 1350 1351 if (s == -1) { 1352 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1353 err(1, "socket"); 1354 } 1355 1356 return (s); 1357 } 1358 1359 /* 1360 * Returns the response len if the name is a group, otherwise returns 0. 1361 */ 1362 static int 1363 is_a_group(char *name) 1364 { 1365 ENTRY item; 1366 ENTRY *ret_item; 1367 1368 item.key = name; 1369 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1370 return (0); 1371 1372 return (*(int *)ret_item->data); 1373 } 1374 1375 struct node_host * 1376 ifa_exists(char *ifa_name) 1377 { 1378 struct node_host *n; 1379 1380 if (iftab == NULL) 1381 ifa_load(); 1382 1383 /* check whether this is a group */ 1384 if (is_a_group(ifa_name)) { 1385 /* fake a node_host */ 1386 if ((n = calloc(1, sizeof(*n))) == NULL) 1387 err(1, "calloc"); 1388 if ((n->ifname = strdup(ifa_name)) == NULL) 1389 err(1, "strdup"); 1390 return (n); 1391 } 1392 1393 for (n = iftab; n; n = n->next) { 1394 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1395 return (n); 1396 } 1397 1398 return (NULL); 1399 } 1400 1401 struct node_host * 1402 ifa_grouplookup(char *ifa_name, int flags) 1403 { 1404 struct ifg_req *ifg; 1405 struct ifgroupreq ifgr; 1406 int s, len; 1407 struct node_host *n, *h = NULL; 1408 1409 s = get_query_socket(); 1410 len = is_a_group(ifa_name); 1411 if (len == 0) 1412 return (NULL); 1413 bzero(&ifgr, sizeof(ifgr)); 1414 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1415 ifgr.ifgr_len = len; 1416 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1417 err(1, "calloc"); 1418 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1419 err(1, "SIOCGIFGMEMB"); 1420 1421 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1422 ifg++) { 1423 len -= sizeof(struct ifg_req); 1424 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1425 continue; 1426 if (h == NULL) 1427 h = n; 1428 else { 1429 h->tail->next = n; 1430 h->tail = n->tail; 1431 } 1432 } 1433 free(ifgr.ifgr_groups); 1434 1435 return (h); 1436 } 1437 1438 struct node_host * 1439 ifa_lookup(char *ifa_name, int flags) 1440 { 1441 struct node_host *p = NULL, *h = NULL, *n = NULL; 1442 int got4 = 0, got6 = 0; 1443 const char *last_if = NULL; 1444 1445 /* first load iftab and isgroup_map */ 1446 if (iftab == NULL) 1447 ifa_load(); 1448 1449 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1450 return (h); 1451 1452 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1453 ifa_name = NULL; 1454 1455 for (p = iftab; p; p = p->next) { 1456 if (ifa_skip_if(ifa_name, p)) 1457 continue; 1458 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1459 continue; 1460 if ((flags & PFI_AFLAG_BROADCAST) && 1461 !(p->ifa_flags & IFF_BROADCAST)) 1462 continue; 1463 if ((flags & PFI_AFLAG_PEER) && 1464 !(p->ifa_flags & IFF_POINTOPOINT)) 1465 continue; 1466 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1467 continue; 1468 if (last_if == NULL || strcmp(last_if, p->ifname)) 1469 got4 = got6 = 0; 1470 last_if = p->ifname; 1471 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1472 continue; 1473 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1474 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1475 continue; 1476 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1477 continue; 1478 if (p->af == AF_INET) 1479 got4 = 1; 1480 else 1481 got6 = 1; 1482 n = calloc(1, sizeof(struct node_host)); 1483 if (n == NULL) 1484 err(1, "address: calloc"); 1485 n->af = p->af; 1486 if (flags & PFI_AFLAG_BROADCAST) 1487 memcpy(&n->addr.v.a.addr, &p->bcast, 1488 sizeof(struct pf_addr)); 1489 else if (flags & PFI_AFLAG_PEER) 1490 memcpy(&n->addr.v.a.addr, &p->peer, 1491 sizeof(struct pf_addr)); 1492 else 1493 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1494 sizeof(struct pf_addr)); 1495 if (flags & PFI_AFLAG_NETWORK) 1496 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1497 else { 1498 if (n->af == AF_INET) { 1499 if (p->ifa_flags & IFF_LOOPBACK && 1500 p->ifa_flags & IFF_LINK1) 1501 memcpy(&n->addr.v.a.mask, 1502 &p->addr.v.a.mask, 1503 sizeof(struct pf_addr)); 1504 else 1505 set_ipmask(n, 32); 1506 } else 1507 set_ipmask(n, 128); 1508 } 1509 n->ifindex = p->ifindex; 1510 n->ifname = strdup(p->ifname); 1511 1512 n->next = NULL; 1513 n->tail = n; 1514 if (h == NULL) 1515 h = n; 1516 else { 1517 h->tail->next = n; 1518 h->tail = n; 1519 } 1520 } 1521 return (h); 1522 } 1523 1524 int 1525 ifa_skip_if(const char *filter, struct node_host *p) 1526 { 1527 int n; 1528 1529 if (p->af != AF_INET && p->af != AF_INET6) 1530 return (1); 1531 if (filter == NULL || !*filter) 1532 return (0); 1533 if (!strcmp(p->ifname, filter)) 1534 return (0); /* exact match */ 1535 n = strlen(filter); 1536 if (n < 1 || n >= IFNAMSIZ) 1537 return (1); /* sanity check */ 1538 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1539 return (1); /* only do exact match in that case */ 1540 if (strncmp(p->ifname, filter, n)) 1541 return (1); /* prefix doesn't match */ 1542 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1543 } 1544 1545 1546 struct node_host * 1547 host(const char *s) 1548 { 1549 struct node_host *h = NULL; 1550 int mask, v4mask, v6mask, cont = 1; 1551 char *p, *q, *ps; 1552 1553 if ((p = strrchr(s, '/')) != NULL) { 1554 mask = strtol(p+1, &q, 0); 1555 if (!q || *q || mask > 128 || q == (p+1)) { 1556 fprintf(stderr, "invalid netmask '%s'\n", p); 1557 return (NULL); 1558 } 1559 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1560 err(1, "host: malloc"); 1561 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1562 v4mask = v6mask = mask; 1563 } else { 1564 if ((ps = strdup(s)) == NULL) 1565 err(1, "host: strdup"); 1566 v4mask = 32; 1567 v6mask = 128; 1568 mask = -1; 1569 } 1570 1571 /* IPv4 address? */ 1572 if (cont && (h = host_v4(s, mask)) != NULL) 1573 cont = 0; 1574 1575 /* IPv6 address? */ 1576 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1577 cont = 0; 1578 1579 /* interface with this name exists? */ 1580 /* expensive with thousands of interfaces - prioritze IPv4/6 check */ 1581 if (cont && (h = host_if(ps, mask)) != NULL) 1582 cont = 0; 1583 1584 /* dns lookup */ 1585 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1586 cont = 0; 1587 free(ps); 1588 1589 if (h == NULL || cont == 1) { 1590 fprintf(stderr, "no IP address found for %s\n", s); 1591 return (NULL); 1592 } 1593 return (h); 1594 } 1595 1596 struct node_host * 1597 host_if(const char *s, int mask) 1598 { 1599 struct node_host *n, *h = NULL; 1600 char *p, *ps; 1601 int flags = 0; 1602 1603 if ((ps = strdup(s)) == NULL) 1604 err(1, "host_if: strdup"); 1605 while ((p = strrchr(ps, ':')) != NULL) { 1606 if (!strcmp(p+1, "network")) 1607 flags |= PFI_AFLAG_NETWORK; 1608 else if (!strcmp(p+1, "broadcast")) 1609 flags |= PFI_AFLAG_BROADCAST; 1610 else if (!strcmp(p+1, "peer")) 1611 flags |= PFI_AFLAG_PEER; 1612 else if (!strcmp(p+1, "0")) 1613 flags |= PFI_AFLAG_NOALIAS; 1614 else { 1615 free(ps); 1616 return (NULL); 1617 } 1618 *p = '\0'; 1619 } 1620 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1621 fprintf(stderr, "illegal combination of interface modifiers\n"); 1622 free(ps); 1623 return (NULL); 1624 } 1625 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1626 fprintf(stderr, "network or broadcast lookup, but " 1627 "extra netmask given\n"); 1628 free(ps); 1629 return (NULL); 1630 } 1631 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1632 /* interface with this name exists */ 1633 h = ifa_lookup(ps, flags); 1634 for (n = h; n != NULL && mask > -1; n = n->next) 1635 set_ipmask(n, mask); 1636 } 1637 1638 free(ps); 1639 return (h); 1640 } 1641 1642 struct node_host * 1643 host_v4(const char *s, int mask) 1644 { 1645 struct node_host *h = NULL; 1646 struct in_addr ina; 1647 int bits = 32; 1648 1649 memset(&ina, 0, sizeof(struct in_addr)); 1650 if (strrchr(s, '/') != NULL) { 1651 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1652 return (NULL); 1653 } else { 1654 if (inet_pton(AF_INET, s, &ina) != 1) 1655 return (NULL); 1656 } 1657 1658 h = calloc(1, sizeof(struct node_host)); 1659 if (h == NULL) 1660 err(1, "address: calloc"); 1661 h->ifname = NULL; 1662 h->af = AF_INET; 1663 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1664 set_ipmask(h, bits); 1665 h->next = NULL; 1666 h->tail = h; 1667 1668 return (h); 1669 } 1670 1671 struct node_host * 1672 host_v6(const char *s, int mask) 1673 { 1674 struct addrinfo hints, *res; 1675 struct node_host *h = NULL; 1676 1677 memset(&hints, 0, sizeof(hints)); 1678 hints.ai_family = AF_INET6; 1679 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1680 hints.ai_flags = AI_NUMERICHOST; 1681 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1682 h = calloc(1, sizeof(struct node_host)); 1683 if (h == NULL) 1684 err(1, "address: calloc"); 1685 h->ifname = NULL; 1686 h->af = AF_INET6; 1687 memcpy(&h->addr.v.a.addr, 1688 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1689 sizeof(h->addr.v.a.addr)); 1690 h->ifindex = 1691 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1692 set_ipmask(h, mask); 1693 freeaddrinfo(res); 1694 h->next = NULL; 1695 h->tail = h; 1696 } 1697 1698 return (h); 1699 } 1700 1701 struct node_host * 1702 host_dns(const char *s, int v4mask, int v6mask) 1703 { 1704 struct addrinfo hints, *res0, *res; 1705 struct node_host *n, *h = NULL; 1706 int error, noalias = 0; 1707 int got4 = 0, got6 = 0; 1708 char *p, *ps; 1709 1710 if ((ps = strdup(s)) == NULL) 1711 err(1, "host_dns: strdup"); 1712 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1713 noalias = 1; 1714 *p = '\0'; 1715 } 1716 memset(&hints, 0, sizeof(hints)); 1717 hints.ai_family = PF_UNSPEC; 1718 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1719 error = getaddrinfo(ps, NULL, &hints, &res0); 1720 if (error) { 1721 free(ps); 1722 return (h); 1723 } 1724 1725 for (res = res0; res; res = res->ai_next) { 1726 if (res->ai_family != AF_INET && 1727 res->ai_family != AF_INET6) 1728 continue; 1729 if (noalias) { 1730 if (res->ai_family == AF_INET) { 1731 if (got4) 1732 continue; 1733 got4 = 1; 1734 } else { 1735 if (got6) 1736 continue; 1737 got6 = 1; 1738 } 1739 } 1740 n = calloc(1, sizeof(struct node_host)); 1741 if (n == NULL) 1742 err(1, "host_dns: calloc"); 1743 n->ifname = NULL; 1744 n->af = res->ai_family; 1745 if (res->ai_family == AF_INET) { 1746 memcpy(&n->addr.v.a.addr, 1747 &((struct sockaddr_in *) 1748 res->ai_addr)->sin_addr.s_addr, 1749 sizeof(struct in_addr)); 1750 set_ipmask(n, v4mask); 1751 } else { 1752 memcpy(&n->addr.v.a.addr, 1753 &((struct sockaddr_in6 *) 1754 res->ai_addr)->sin6_addr.s6_addr, 1755 sizeof(struct in6_addr)); 1756 n->ifindex = 1757 ((struct sockaddr_in6 *) 1758 res->ai_addr)->sin6_scope_id; 1759 set_ipmask(n, v6mask); 1760 } 1761 n->next = NULL; 1762 n->tail = n; 1763 if (h == NULL) 1764 h = n; 1765 else { 1766 h->tail->next = n; 1767 h->tail = n; 1768 } 1769 } 1770 freeaddrinfo(res0); 1771 free(ps); 1772 1773 return (h); 1774 } 1775 1776 /* 1777 * convert a hostname to a list of addresses and put them in the given buffer. 1778 * test: 1779 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1780 */ 1781 int 1782 append_addr(struct pfr_buffer *b, char *s, int test) 1783 { 1784 char *r; 1785 struct node_host *h, *n; 1786 int rv, not = 0; 1787 1788 for (r = s; *r == '!'; r++) 1789 not = !not; 1790 if ((n = host(r)) == NULL) { 1791 errno = 0; 1792 return (-1); 1793 } 1794 rv = append_addr_host(b, n, test, not); 1795 do { 1796 h = n; 1797 n = n->next; 1798 free(h); 1799 } while (n != NULL); 1800 return (rv); 1801 } 1802 1803 /* 1804 * same as previous function, but with a pre-parsed input and the ability 1805 * to "negate" the result. Does not free the node_host list. 1806 * not: 1807 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1808 */ 1809 int 1810 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1811 { 1812 int bits; 1813 struct pfr_addr addr; 1814 1815 do { 1816 bzero(&addr, sizeof(addr)); 1817 addr.pfra_not = n->not ^ not; 1818 addr.pfra_af = n->af; 1819 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1820 switch (n->af) { 1821 case AF_INET: 1822 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1823 bits = 32; 1824 break; 1825 case AF_INET6: 1826 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1827 sizeof(struct in6_addr)); 1828 bits = 128; 1829 break; 1830 default: 1831 errno = EINVAL; 1832 return (-1); 1833 } 1834 if ((test && (not || addr.pfra_net != bits)) || 1835 addr.pfra_net > bits) { 1836 errno = EINVAL; 1837 return (-1); 1838 } 1839 if (pfr_buf_add(b, &addr)) 1840 return (-1); 1841 } while ((n = n->next) != NULL); 1842 1843 return (0); 1844 } 1845 1846 int 1847 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1848 { 1849 struct pfioc_trans_e trans; 1850 1851 bzero(&trans, sizeof(trans)); 1852 trans.rs_num = rs_num; 1853 if (strlcpy(trans.anchor, anchor, 1854 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1855 errx(1, "pfctl_add_trans: strlcpy"); 1856 1857 return pfr_buf_add(buf, &trans); 1858 } 1859 1860 u_int32_t 1861 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1862 { 1863 struct pfioc_trans_e *p; 1864 1865 PFRB_FOREACH(p, buf) 1866 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1867 return (p->ticket); 1868 errx(1, "pfctl_get_ticket: assertion failed"); 1869 } 1870 1871 int 1872 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1873 { 1874 struct pfioc_trans trans; 1875 1876 bzero(&trans, sizeof(trans)); 1877 trans.size = buf->pfrb_size - from; 1878 trans.esize = sizeof(struct pfioc_trans_e); 1879 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1880 return ioctl(dev, cmd, &trans); 1881 } 1882