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 <inttypes.h> 64 #include <unistd.h> 65 66 #include "pfctl_parser.h" 67 #include "pfctl.h" 68 69 void print_op (u_int8_t, const char *, const char *); 70 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int); 71 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned); 72 void print_flags (u_int8_t); 73 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 74 struct pf_rule_addr *, u_int8_t, u_int8_t, int, int); 75 int ifa_skip_if(const char *filter, struct node_host *p); 76 77 struct node_host *host_if(const char *, int); 78 struct node_host *host_v4(const char *, int); 79 struct node_host *host_v6(const char *, int); 80 struct node_host *host_dns(const char *, int, int); 81 82 const char * const tcpflags = "FSRPAUEW"; 83 84 static const struct icmptypeent icmp_type[] = { 85 { "echoreq", ICMP_ECHO }, 86 { "echorep", ICMP_ECHOREPLY }, 87 { "unreach", ICMP_UNREACH }, 88 { "squench", ICMP_SOURCEQUENCH }, 89 { "redir", ICMP_REDIRECT }, 90 { "althost", ICMP_ALTHOSTADDR }, 91 { "routeradv", ICMP_ROUTERADVERT }, 92 { "routersol", ICMP_ROUTERSOLICIT }, 93 { "timex", ICMP_TIMXCEED }, 94 { "paramprob", ICMP_PARAMPROB }, 95 { "timereq", ICMP_TSTAMP }, 96 { "timerep", ICMP_TSTAMPREPLY }, 97 { "inforeq", ICMP_IREQ }, 98 { "inforep", ICMP_IREQREPLY }, 99 { "maskreq", ICMP_MASKREQ }, 100 { "maskrep", ICMP_MASKREPLY }, 101 { "trace", ICMP_TRACEROUTE }, 102 { "dataconv", ICMP_DATACONVERR }, 103 { "mobredir", ICMP_MOBILE_REDIRECT }, 104 { "ipv6-where", ICMP_IPV6_WHEREAREYOU }, 105 { "ipv6-here", ICMP_IPV6_IAMHERE }, 106 { "mobregreq", ICMP_MOBILE_REGREQUEST }, 107 { "mobregrep", ICMP_MOBILE_REGREPLY }, 108 { "skip", ICMP_SKIP }, 109 { "photuris", ICMP_PHOTURIS } 110 }; 111 112 static const struct icmptypeent icmp6_type[] = { 113 { "unreach", ICMP6_DST_UNREACH }, 114 { "toobig", ICMP6_PACKET_TOO_BIG }, 115 { "timex", ICMP6_TIME_EXCEEDED }, 116 { "paramprob", ICMP6_PARAM_PROB }, 117 { "echoreq", ICMP6_ECHO_REQUEST }, 118 { "echorep", ICMP6_ECHO_REPLY }, 119 { "groupqry", ICMP6_MEMBERSHIP_QUERY }, 120 { "listqry", MLD_LISTENER_QUERY }, 121 { "grouprep", ICMP6_MEMBERSHIP_REPORT }, 122 { "listenrep", MLD_LISTENER_REPORT }, 123 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION }, 124 { "listendone", MLD_LISTENER_DONE }, 125 { "routersol", ND_ROUTER_SOLICIT }, 126 { "routeradv", ND_ROUTER_ADVERT }, 127 { "neighbrsol", ND_NEIGHBOR_SOLICIT }, 128 { "neighbradv", ND_NEIGHBOR_ADVERT }, 129 { "redir", ND_REDIRECT }, 130 { "routrrenum", ICMP6_ROUTER_RENUMBERING }, 131 { "wrureq", ICMP6_WRUREQUEST }, 132 { "wrurep", ICMP6_WRUREPLY }, 133 { "fqdnreq", ICMP6_FQDN_QUERY }, 134 { "fqdnrep", ICMP6_FQDN_REPLY }, 135 { "niqry", ICMP6_NI_QUERY }, 136 { "nirep", ICMP6_NI_REPLY }, 137 { "mtraceresp", MLD_MTRACE_RESP }, 138 { "mtrace", MLD_MTRACE } 139 }; 140 141 static const struct icmpcodeent icmp_code[] = { 142 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET }, 143 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST }, 144 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL }, 145 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT }, 146 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG }, 147 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL }, 148 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN }, 149 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN }, 150 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED }, 151 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB }, 152 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB }, 153 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET }, 154 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST }, 155 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB }, 156 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE }, 157 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF }, 158 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET }, 159 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST }, 160 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET }, 161 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST }, 162 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL }, 163 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON }, 164 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS }, 165 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS }, 166 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR }, 167 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT }, 168 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH }, 169 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX }, 170 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED }, 171 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED } 172 }; 173 174 static const struct icmpcodeent icmp6_code[] = { 175 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN }, 176 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE }, 177 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR }, 178 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE }, 179 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR }, 180 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT }, 181 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT }, 182 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY }, 183 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER }, 184 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER }, 185 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK }, 186 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER } 187 }; 188 189 const struct pf_timeout pf_timeouts[] = { 190 { "tcp.first", PFTM_TCP_FIRST_PACKET }, 191 { "tcp.opening", PFTM_TCP_OPENING }, 192 { "tcp.established", PFTM_TCP_ESTABLISHED }, 193 { "tcp.closing", PFTM_TCP_CLOSING }, 194 { "tcp.finwait", PFTM_TCP_FIN_WAIT }, 195 { "tcp.closed", PFTM_TCP_CLOSED }, 196 { "tcp.tsdiff", PFTM_TS_DIFF }, 197 { "udp.first", PFTM_UDP_FIRST_PACKET }, 198 { "udp.single", PFTM_UDP_SINGLE }, 199 { "udp.multiple", PFTM_UDP_MULTIPLE }, 200 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 201 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 202 { "other.first", PFTM_OTHER_FIRST_PACKET }, 203 { "other.single", PFTM_OTHER_SINGLE }, 204 { "other.multiple", PFTM_OTHER_MULTIPLE }, 205 { "frag", PFTM_FRAG }, 206 { "interval", PFTM_INTERVAL }, 207 { "adaptive.start", PFTM_ADAPTIVE_START }, 208 { "adaptive.end", PFTM_ADAPTIVE_END }, 209 { "src.track", PFTM_SRC_NODE }, 210 { NULL, 0 } 211 }; 212 213 static struct hsearch_data isgroup_map; 214 215 static __attribute__((constructor)) void 216 pfctl_parser_init(void) 217 { 218 /* 219 * As hdestroy() will never be called on these tables, it will be 220 * safe to use references into the stored data as keys. 221 */ 222 if (hcreate_r(0, &isgroup_map) == 0) 223 err(1, "Failed to create interface group query response map"); 224 } 225 226 const struct icmptypeent * 227 geticmptypebynumber(u_int8_t type, sa_family_t af) 228 { 229 unsigned int i; 230 231 if (af != AF_INET6) { 232 for (i=0; i < nitems(icmp_type); i++) { 233 if (type == icmp_type[i].type) 234 return (&icmp_type[i]); 235 } 236 } else { 237 for (i=0; i < nitems(icmp6_type); i++) { 238 if (type == icmp6_type[i].type) 239 return (&icmp6_type[i]); 240 } 241 } 242 return (NULL); 243 } 244 245 const struct icmptypeent * 246 geticmptypebyname(char *w, sa_family_t af) 247 { 248 unsigned int i; 249 250 if (af != AF_INET6) { 251 for (i=0; i < nitems(icmp_type); i++) { 252 if (!strcmp(w, icmp_type[i].name)) 253 return (&icmp_type[i]); 254 } 255 } else { 256 for (i=0; i < nitems(icmp6_type); i++) { 257 if (!strcmp(w, icmp6_type[i].name)) 258 return (&icmp6_type[i]); 259 } 260 } 261 return (NULL); 262 } 263 264 const struct icmpcodeent * 265 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 266 { 267 unsigned int i; 268 269 if (af != AF_INET6) { 270 for (i=0; i < nitems(icmp_code); i++) { 271 if (type == icmp_code[i].type && 272 code == icmp_code[i].code) 273 return (&icmp_code[i]); 274 } 275 } else { 276 for (i=0; i < nitems(icmp6_code); i++) { 277 if (type == icmp6_code[i].type && 278 code == icmp6_code[i].code) 279 return (&icmp6_code[i]); 280 } 281 } 282 return (NULL); 283 } 284 285 const struct icmpcodeent * 286 geticmpcodebyname(u_long type, char *w, sa_family_t af) 287 { 288 unsigned int i; 289 290 if (af != AF_INET6) { 291 for (i=0; i < nitems(icmp_code); i++) { 292 if (type == icmp_code[i].type && 293 !strcmp(w, icmp_code[i].name)) 294 return (&icmp_code[i]); 295 } 296 } else { 297 for (i=0; i < nitems(icmp6_code); i++) { 298 if (type == icmp6_code[i].type && 299 !strcmp(w, icmp6_code[i].name)) 300 return (&icmp6_code[i]); 301 } 302 } 303 return (NULL); 304 } 305 306 void 307 print_op(u_int8_t op, const char *a1, const char *a2) 308 { 309 if (op == PF_OP_IRG) 310 printf(" %s >< %s", a1, a2); 311 else if (op == PF_OP_XRG) 312 printf(" %s <> %s", a1, a2); 313 else if (op == PF_OP_EQ) 314 printf(" = %s", a1); 315 else if (op == PF_OP_NE) 316 printf(" != %s", a1); 317 else if (op == PF_OP_LT) 318 printf(" < %s", a1); 319 else if (op == PF_OP_LE) 320 printf(" <= %s", a1); 321 else if (op == PF_OP_GT) 322 printf(" > %s", a1); 323 else if (op == PF_OP_GE) 324 printf(" >= %s", a1); 325 else if (op == PF_OP_RRG) 326 printf(" %s:%s", a1, a2); 327 } 328 329 void 330 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric) 331 { 332 char a1[6], a2[6]; 333 struct servent *s; 334 335 if (!numeric) 336 s = getservbyport(p1, proto); 337 else 338 s = NULL; 339 p1 = ntohs(p1); 340 p2 = ntohs(p2); 341 snprintf(a1, sizeof(a1), "%u", p1); 342 snprintf(a2, sizeof(a2), "%u", p2); 343 printf(" port"); 344 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 345 print_op(op, s->s_name, a2); 346 else 347 print_op(op, a1, a2); 348 } 349 350 void 351 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 352 { 353 char a1[11], a2[11]; 354 355 snprintf(a1, sizeof(a1), "%u", u1); 356 snprintf(a2, sizeof(a2), "%u", u2); 357 printf(" %s", t); 358 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 359 print_op(op, "unknown", a2); 360 else 361 print_op(op, a1, a2); 362 } 363 364 void 365 print_flags(u_int8_t f) 366 { 367 int i; 368 369 for (i = 0; tcpflags[i]; ++i) 370 if (f & (1 << i)) 371 printf("%c", tcpflags[i]); 372 } 373 374 void 375 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 376 sa_family_t af, u_int8_t proto, int verbose, int numeric) 377 { 378 char buf[PF_OSFP_LEN*3]; 379 if (src->addr.type == PF_ADDR_ADDRMASK && 380 dst->addr.type == PF_ADDR_ADDRMASK && 381 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 382 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 383 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 384 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 385 !src->neg && !dst->neg && 386 !src->port_op && !dst->port_op && 387 osfp == PF_OSFP_ANY) 388 printf(" all"); 389 else { 390 printf(" from "); 391 if (src->neg) 392 printf("! "); 393 print_addr(&src->addr, af, verbose); 394 if (src->port_op) 395 print_port(src->port_op, src->port[0], 396 src->port[1], 397 proto == IPPROTO_TCP ? "tcp" : "udp", 398 numeric); 399 if (osfp != PF_OSFP_ANY) 400 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 401 sizeof(buf))); 402 403 printf(" to "); 404 if (dst->neg) 405 printf("! "); 406 print_addr(&dst->addr, af, verbose); 407 if (dst->port_op) 408 print_port(dst->port_op, dst->port[0], 409 dst->port[1], 410 proto == IPPROTO_TCP ? "tcp" : "udp", 411 numeric); 412 } 413 } 414 415 void 416 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2, 417 sa_family_t af, int id) 418 { 419 struct pf_pooladdr *pooladdr; 420 421 if ((TAILQ_FIRST(&pool->list) != NULL) && 422 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 423 printf("{ "); 424 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 425 switch (id) { 426 case PF_NAT: 427 case PF_RDR: 428 case PF_BINAT: 429 print_addr(&pooladdr->addr, af, 0); 430 break; 431 case PF_PASS: 432 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 433 printf("%s", pooladdr->ifname); 434 else { 435 printf("(%s ", pooladdr->ifname); 436 print_addr(&pooladdr->addr, af, 0); 437 printf(")"); 438 } 439 break; 440 default: 441 break; 442 } 443 if (TAILQ_NEXT(pooladdr, entries) != NULL) 444 printf(", "); 445 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 446 printf(" }"); 447 } 448 switch (id) { 449 case PF_NAT: 450 if ((p1 != PF_NAT_PROXY_PORT_LOW || 451 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 452 if (p1 == p2) 453 printf(" port %u", p1); 454 else 455 printf(" port %u:%u", p1, p2); 456 } 457 break; 458 case PF_RDR: 459 if (p1) { 460 printf(" port %u", p1); 461 if (p2 && (p2 != p1)) 462 printf(":%u", p2); 463 } 464 break; 465 default: 466 break; 467 } 468 switch (pool->opts & PF_POOL_TYPEMASK) { 469 case PF_POOL_NONE: 470 break; 471 case PF_POOL_BITMASK: 472 printf(" bitmask"); 473 break; 474 case PF_POOL_RANDOM: 475 printf(" random"); 476 break; 477 case PF_POOL_SRCHASH: 478 printf(" source-hash 0x%08x%08x%08x%08x", 479 pool->key.key32[0], pool->key.key32[1], 480 pool->key.key32[2], pool->key.key32[3]); 481 break; 482 case PF_POOL_ROUNDROBIN: 483 printf(" round-robin"); 484 break; 485 } 486 if (pool->opts & PF_POOL_STICKYADDR) 487 printf(" sticky-address"); 488 if (id == PF_NAT && p1 == 0 && p2 == 0) 489 printf(" static-port"); 490 if (pool->mape.offset > 0) 491 printf(" map-e-portset %u/%u/%u", 492 pool->mape.offset, pool->mape.psidlen, pool->mape.psid); 493 } 494 495 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 496 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 497 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 498 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 499 500 void 501 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts) 502 { 503 struct pfctl_status_counter *c; 504 char statline[80], *running; 505 time_t runtime; 506 int i; 507 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 508 static const char hex[] = "0123456789abcdef"; 509 510 runtime = time(NULL) - s->since; 511 running = s->running ? "Enabled" : "Disabled"; 512 513 if (s->since) { 514 unsigned int sec, min, hrs, day = runtime; 515 516 sec = day % 60; 517 day /= 60; 518 min = day % 60; 519 day /= 60; 520 hrs = day % 24; 521 day /= 24; 522 snprintf(statline, sizeof(statline), 523 "Status: %s for %u days %.2u:%.2u:%.2u", 524 running, day, hrs, min, sec); 525 } else 526 snprintf(statline, sizeof(statline), "Status: %s", running); 527 printf("%-44s", statline); 528 switch (s->debug) { 529 case PF_DEBUG_NONE: 530 printf("%15s\n\n", "Debug: None"); 531 break; 532 case PF_DEBUG_URGENT: 533 printf("%15s\n\n", "Debug: Urgent"); 534 break; 535 case PF_DEBUG_MISC: 536 printf("%15s\n\n", "Debug: Misc"); 537 break; 538 case PF_DEBUG_NOISY: 539 printf("%15s\n\n", "Debug: Loud"); 540 break; 541 } 542 543 if (opts & PF_OPT_VERBOSE) { 544 printf("Hostid: 0x%08x\n", ntohl(s->hostid)); 545 546 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 547 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 548 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 549 } 550 buf[i + i] = '\0'; 551 printf("Checksum: 0x%s\n\n", buf); 552 } 553 554 if (s->ifname[0] != 0) { 555 printf("Interface Stats for %-16s %5s %16s\n", 556 s->ifname, "IPv4", "IPv6"); 557 printf(" %-25s %14llu %16llu\n", "Bytes In", 558 (unsigned long long)s->bcounters[0][0], 559 (unsigned long long)s->bcounters[1][0]); 560 printf(" %-25s %14llu %16llu\n", "Bytes Out", 561 (unsigned long long)s->bcounters[0][1], 562 (unsigned long long)s->bcounters[1][1]); 563 printf(" Packets In\n"); 564 printf(" %-23s %14llu %16llu\n", "Passed", 565 (unsigned long long)s->pcounters[0][0][PF_PASS], 566 (unsigned long long)s->pcounters[1][0][PF_PASS]); 567 printf(" %-23s %14llu %16llu\n", "Blocked", 568 (unsigned long long)s->pcounters[0][0][PF_DROP], 569 (unsigned long long)s->pcounters[1][0][PF_DROP]); 570 printf(" Packets Out\n"); 571 printf(" %-23s %14llu %16llu\n", "Passed", 572 (unsigned long long)s->pcounters[0][1][PF_PASS], 573 (unsigned long long)s->pcounters[1][1][PF_PASS]); 574 printf(" %-23s %14llu %16llu\n\n", "Blocked", 575 (unsigned long long)s->pcounters[0][1][PF_DROP], 576 (unsigned long long)s->pcounters[1][1][PF_DROP]); 577 } 578 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 579 printf(" %-25s %14" PRIu64 " %14s\n", "current entries", s->states, ""); 580 TAILQ_FOREACH(c, &s->fcounters, entry) { 581 printf(" %-25s %14" PRIu64 " ", c->name, c->counter); 582 if (runtime > 0) 583 printf("%14.1f/s\n", 584 (double)c->counter / (double)runtime); 585 else 586 printf("%14s\n", ""); 587 } 588 if (opts & PF_OPT_VERBOSE) { 589 printf("Source Tracking Table\n"); 590 printf(" %-25s %14" PRIu64 " %14s\n", "current entries", 591 s->src_nodes, ""); 592 TAILQ_FOREACH(c, &s->scounters, entry) { 593 printf(" %-25s %14" PRIu64 " ", c->name, c->counter); 594 if (runtime > 0) 595 printf("%14.1f/s\n", 596 (double)c->counter / (double)runtime); 597 else 598 printf("%14s\n", ""); 599 } 600 } 601 printf("Counters\n"); 602 TAILQ_FOREACH(c, &s->counters, entry) { 603 printf(" %-25s %14" PRIu64 " ", c->name, c->counter); 604 if (runtime > 0) 605 printf("%14.1f/s\n", 606 (double)c->counter / (double)runtime); 607 else 608 printf("%14s\n", ""); 609 } 610 if (opts & PF_OPT_VERBOSE) { 611 printf("Limit Counters\n"); 612 TAILQ_FOREACH(c, &s->lcounters, entry) { 613 printf(" %-25s %14" PRIu64 " ", c->name, c->counter); 614 if (runtime > 0) 615 printf("%14.1f/s\n", 616 (double)c->counter / (double)runtime); 617 else 618 printf("%14s\n", ""); 619 } 620 621 printf("Syncookies\n"); 622 printf(" %-25s %s\n", "mode", 623 cookies->mode == PFCTL_SYNCOOKIES_NEVER ? 624 "never" : "always"); 625 } 626 } 627 628 void 629 print_running(struct pfctl_status *status) 630 { 631 printf("%s\n", status->running ? "Enabled" : "Disabled"); 632 } 633 634 void 635 print_src_node(struct pf_src_node *sn, int opts) 636 { 637 struct pf_addr_wrap aw; 638 int min, sec; 639 640 memset(&aw, 0, sizeof(aw)); 641 if (sn->af == AF_INET) 642 aw.v.a.mask.addr32[0] = 0xffffffff; 643 else 644 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 645 646 aw.v.a.addr = sn->addr; 647 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 648 printf(" -> "); 649 aw.v.a.addr = sn->raddr; 650 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 651 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 652 sn->conn, sn->conn_rate.count / 1000, 653 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 654 if (opts & PF_OPT_VERBOSE) { 655 sec = sn->creation % 60; 656 sn->creation /= 60; 657 min = sn->creation % 60; 658 sn->creation /= 60; 659 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 660 if (sn->states == 0) { 661 sec = sn->expire % 60; 662 sn->expire /= 60; 663 min = sn->expire % 60; 664 sn->expire /= 60; 665 printf(", expires in %.2u:%.2u:%.2u", 666 sn->expire, min, sec); 667 } 668 printf(", %llu pkts, %llu bytes", 669 #ifdef __FreeBSD__ 670 (unsigned long long)(sn->packets[0] + sn->packets[1]), 671 (unsigned long long)(sn->bytes[0] + sn->bytes[1])); 672 #else 673 sn->packets[0] + sn->packets[1], 674 sn->bytes[0] + sn->bytes[1]); 675 #endif 676 switch (sn->ruletype) { 677 case PF_NAT: 678 if (sn->rule.nr != -1) 679 printf(", nat rule %u", sn->rule.nr); 680 break; 681 case PF_RDR: 682 if (sn->rule.nr != -1) 683 printf(", rdr rule %u", sn->rule.nr); 684 break; 685 case PF_PASS: 686 if (sn->rule.nr != -1) 687 printf(", filter rule %u", sn->rule.nr); 688 break; 689 } 690 printf("\n"); 691 } 692 } 693 694 void 695 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric) 696 { 697 static const char *actiontypes[] = { "pass", "block", "scrub", 698 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" }; 699 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 700 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 701 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 702 int i, opts; 703 704 if (verbose) 705 printf("@%d ", r->nr); 706 if (r->action == PF_MATCH) 707 printf("match"); 708 else 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 const char *protoname; 813 814 if ((protoname = pfctl_proto2name(r->proto)) != NULL) 815 printf(" proto %s", protoname); 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 i = 0; 1020 while (r->label[i][0]) 1021 printf(" label \"%s\"", r->label[i++]); 1022 if (r->qname[0] && r->pqname[0]) 1023 printf(" queue(%s, %s)", r->qname, r->pqname); 1024 else if (r->qname[0]) 1025 printf(" queue %s", r->qname); 1026 if (r->tagname[0]) 1027 printf(" tag %s", r->tagname); 1028 if (r->match_tagname[0]) { 1029 if (r->match_tag_not) 1030 printf(" !"); 1031 printf(" tagged %s", r->match_tagname); 1032 } 1033 if (r->rtableid != -1) 1034 printf(" rtable %u", r->rtableid); 1035 if (r->divert.port) { 1036 #ifdef __FreeBSD__ 1037 printf(" divert-to %u", ntohs(r->divert.port)); 1038 #else 1039 if (PF_AZERO(&r->divert.addr, r->af)) { 1040 printf(" divert-reply"); 1041 } else { 1042 /* XXX cut&paste from print_addr */ 1043 char buf[48]; 1044 1045 printf(" divert-to "); 1046 if (inet_ntop(r->af, &r->divert.addr, buf, 1047 sizeof(buf)) == NULL) 1048 printf("?"); 1049 else 1050 printf("%s", buf); 1051 printf(" port %u", ntohs(r->divert.port)); 1052 } 1053 #endif 1054 } 1055 if (!anchor_call[0] && (r->action == PF_NAT || 1056 r->action == PF_BINAT || r->action == PF_RDR)) { 1057 printf(" -> "); 1058 print_pool(&r->rpool, r->rpool.proxy_port[0], 1059 r->rpool.proxy_port[1], r->af, r->action); 1060 } 1061 } 1062 1063 void 1064 print_tabledef(const char *name, int flags, int addrs, 1065 struct node_tinithead *nodes) 1066 { 1067 struct node_tinit *ti, *nti; 1068 struct node_host *h; 1069 1070 printf("table <%s>", name); 1071 if (flags & PFR_TFLAG_CONST) 1072 printf(" const"); 1073 if (flags & PFR_TFLAG_PERSIST) 1074 printf(" persist"); 1075 if (flags & PFR_TFLAG_COUNTERS) 1076 printf(" counters"); 1077 SIMPLEQ_FOREACH(ti, nodes, entries) { 1078 if (ti->file) { 1079 printf(" file \"%s\"", ti->file); 1080 continue; 1081 } 1082 printf(" {"); 1083 for (;;) { 1084 for (h = ti->host; h != NULL; h = h->next) { 1085 printf(h->not ? " !" : " "); 1086 print_addr(&h->addr, h->af, 0); 1087 } 1088 nti = SIMPLEQ_NEXT(ti, entries); 1089 if (nti != NULL && nti->file == NULL) 1090 ti = nti; /* merge lists */ 1091 else 1092 break; 1093 } 1094 printf(" }"); 1095 } 1096 if (addrs && SIMPLEQ_EMPTY(nodes)) 1097 printf(" { }"); 1098 printf("\n"); 1099 } 1100 1101 int 1102 parse_flags(char *s) 1103 { 1104 char *p, *q; 1105 u_int8_t f = 0; 1106 1107 for (p = s; *p; p++) { 1108 if ((q = strchr(tcpflags, *p)) == NULL) 1109 return -1; 1110 else 1111 f |= 1 << (q - tcpflags); 1112 } 1113 return (f ? f : PF_TH_ALL); 1114 } 1115 1116 void 1117 set_ipmask(struct node_host *h, u_int8_t b) 1118 { 1119 struct pf_addr *m, *n; 1120 int i, j = 0; 1121 1122 m = &h->addr.v.a.mask; 1123 memset(m, 0, sizeof(*m)); 1124 1125 while (b >= 32) { 1126 m->addr32[j++] = 0xffffffff; 1127 b -= 32; 1128 } 1129 for (i = 31; i > 31-b; --i) 1130 m->addr32[j] |= (1 << i); 1131 if (b) 1132 m->addr32[j] = htonl(m->addr32[j]); 1133 1134 /* Mask off bits of the address that will never be used. */ 1135 n = &h->addr.v.a.addr; 1136 if (h->addr.type == PF_ADDR_ADDRMASK) 1137 for (i = 0; i < 4; i++) 1138 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1139 } 1140 1141 int 1142 check_netmask(struct node_host *h, sa_family_t af) 1143 { 1144 struct node_host *n = NULL; 1145 struct pf_addr *m; 1146 1147 for (n = h; n != NULL; n = n->next) { 1148 if (h->addr.type == PF_ADDR_TABLE) 1149 continue; 1150 m = &h->addr.v.a.mask; 1151 /* fix up netmask for dynaddr */ 1152 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1153 unmask(m, AF_INET6) > 32) 1154 set_ipmask(n, 32); 1155 /* netmasks > 32 bit are invalid on v4 */ 1156 if (af == AF_INET && 1157 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1158 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1159 unmask(m, AF_INET6)); 1160 return (1); 1161 } 1162 } 1163 return (0); 1164 } 1165 1166 /* interface lookup routines */ 1167 1168 static struct node_host *iftab; 1169 1170 /* 1171 * Retrieve the list of groups this interface is a member of and make sure 1172 * each group is in the group map. 1173 */ 1174 static void 1175 ifa_add_groups_to_map(char *ifa_name) 1176 { 1177 int s, len; 1178 struct ifgroupreq ifgr; 1179 struct ifg_req *ifg; 1180 1181 s = get_query_socket(); 1182 1183 /* Get size of group list for this interface */ 1184 memset(&ifgr, 0, sizeof(ifgr)); 1185 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1186 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1187 err(1, "SIOCGIFGROUP"); 1188 1189 /* Retrieve group list for this interface */ 1190 len = ifgr.ifgr_len; 1191 ifgr.ifgr_groups = 1192 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1193 sizeof(struct ifg_req)); 1194 if (ifgr.ifgr_groups == NULL) 1195 err(1, "calloc"); 1196 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1197 err(1, "SIOCGIFGROUP"); 1198 1199 ifg = ifgr.ifgr_groups; 1200 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1201 len -= sizeof(struct ifg_req); 1202 if (strcmp(ifg->ifgrq_group, "all")) { 1203 ENTRY item; 1204 ENTRY *ret_item; 1205 int *answer; 1206 1207 item.key = ifg->ifgrq_group; 1208 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1209 struct ifgroupreq ifgr2; 1210 1211 /* Don't know the answer yet */ 1212 if ((answer = malloc(sizeof(int))) == NULL) 1213 err(1, "malloc"); 1214 1215 bzero(&ifgr2, sizeof(ifgr2)); 1216 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1217 sizeof(ifgr2.ifgr_name)); 1218 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1219 *answer = ifgr2.ifgr_len; 1220 else 1221 *answer = 0; 1222 1223 item.key = strdup(ifg->ifgrq_group); 1224 item.data = answer; 1225 if (hsearch_r(item, ENTER, &ret_item, 1226 &isgroup_map) == 0) 1227 err(1, "interface group query response" 1228 " map insert"); 1229 } 1230 } 1231 } 1232 free(ifgr.ifgr_groups); 1233 } 1234 1235 void 1236 ifa_load(void) 1237 { 1238 struct ifaddrs *ifap, *ifa; 1239 struct node_host *n = NULL, *h = NULL; 1240 1241 if (getifaddrs(&ifap) < 0) 1242 err(1, "getifaddrs"); 1243 1244 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1245 if (!(ifa->ifa_addr->sa_family == AF_INET || 1246 ifa->ifa_addr->sa_family == AF_INET6 || 1247 ifa->ifa_addr->sa_family == AF_LINK)) 1248 continue; 1249 n = calloc(1, sizeof(struct node_host)); 1250 if (n == NULL) 1251 err(1, "address: calloc"); 1252 n->af = ifa->ifa_addr->sa_family; 1253 n->ifa_flags = ifa->ifa_flags; 1254 #ifdef __KAME__ 1255 if (n->af == AF_INET6 && 1256 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1257 ifa->ifa_addr)->sin6_addr) && 1258 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1259 0) { 1260 struct sockaddr_in6 *sin6; 1261 1262 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1263 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1264 sin6->sin6_addr.s6_addr[3]; 1265 sin6->sin6_addr.s6_addr[2] = 0; 1266 sin6->sin6_addr.s6_addr[3] = 0; 1267 } 1268 #endif 1269 n->ifindex = 0; 1270 if (n->af == AF_INET) { 1271 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1272 ifa->ifa_addr)->sin_addr.s_addr, 1273 sizeof(struct in_addr)); 1274 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1275 ifa->ifa_netmask)->sin_addr.s_addr, 1276 sizeof(struct in_addr)); 1277 if (ifa->ifa_broadaddr != NULL) 1278 memcpy(&n->bcast, &((struct sockaddr_in *) 1279 ifa->ifa_broadaddr)->sin_addr.s_addr, 1280 sizeof(struct in_addr)); 1281 if (ifa->ifa_dstaddr != NULL) 1282 memcpy(&n->peer, &((struct sockaddr_in *) 1283 ifa->ifa_dstaddr)->sin_addr.s_addr, 1284 sizeof(struct in_addr)); 1285 } else if (n->af == AF_INET6) { 1286 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1287 ifa->ifa_addr)->sin6_addr.s6_addr, 1288 sizeof(struct in6_addr)); 1289 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1290 ifa->ifa_netmask)->sin6_addr.s6_addr, 1291 sizeof(struct in6_addr)); 1292 if (ifa->ifa_broadaddr != NULL) 1293 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1294 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1295 sizeof(struct in6_addr)); 1296 if (ifa->ifa_dstaddr != NULL) 1297 memcpy(&n->peer, &((struct sockaddr_in6 *) 1298 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1299 sizeof(struct in6_addr)); 1300 n->ifindex = ((struct sockaddr_in6 *) 1301 ifa->ifa_addr)->sin6_scope_id; 1302 } else if (n->af == AF_LINK) { 1303 ifa_add_groups_to_map(ifa->ifa_name); 1304 } 1305 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1306 err(1, "ifa_load: strdup"); 1307 n->next = NULL; 1308 n->tail = n; 1309 if (h == NULL) 1310 h = n; 1311 else { 1312 h->tail->next = n; 1313 h->tail = n; 1314 } 1315 } 1316 1317 iftab = h; 1318 freeifaddrs(ifap); 1319 } 1320 1321 static int 1322 get_socket_domain(void) 1323 { 1324 int sdom; 1325 1326 sdom = AF_UNSPEC; 1327 #ifdef WITH_INET6 1328 if (sdom == AF_UNSPEC && feature_present("inet6")) 1329 sdom = AF_INET6; 1330 #endif 1331 #ifdef WITH_INET 1332 if (sdom == AF_UNSPEC && feature_present("inet")) 1333 sdom = AF_INET; 1334 #endif 1335 if (sdom == AF_UNSPEC) 1336 sdom = AF_LINK; 1337 1338 return (sdom); 1339 } 1340 1341 int 1342 get_query_socket(void) 1343 { 1344 static int s = -1; 1345 1346 if (s == -1) { 1347 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1348 err(1, "socket"); 1349 } 1350 1351 return (s); 1352 } 1353 1354 /* 1355 * Returns the response len if the name is a group, otherwise returns 0. 1356 */ 1357 static int 1358 is_a_group(char *name) 1359 { 1360 ENTRY item; 1361 ENTRY *ret_item; 1362 1363 item.key = name; 1364 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1365 return (0); 1366 1367 return (*(int *)ret_item->data); 1368 } 1369 1370 struct node_host * 1371 ifa_exists(char *ifa_name) 1372 { 1373 struct node_host *n; 1374 1375 if (iftab == NULL) 1376 ifa_load(); 1377 1378 /* check whether this is a group */ 1379 if (is_a_group(ifa_name)) { 1380 /* fake a node_host */ 1381 if ((n = calloc(1, sizeof(*n))) == NULL) 1382 err(1, "calloc"); 1383 if ((n->ifname = strdup(ifa_name)) == NULL) 1384 err(1, "strdup"); 1385 return (n); 1386 } 1387 1388 for (n = iftab; n; n = n->next) { 1389 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1390 return (n); 1391 } 1392 1393 return (NULL); 1394 } 1395 1396 struct node_host * 1397 ifa_grouplookup(char *ifa_name, int flags) 1398 { 1399 struct ifg_req *ifg; 1400 struct ifgroupreq ifgr; 1401 int s, len; 1402 struct node_host *n, *h = NULL; 1403 1404 s = get_query_socket(); 1405 len = is_a_group(ifa_name); 1406 if (len == 0) 1407 return (NULL); 1408 bzero(&ifgr, sizeof(ifgr)); 1409 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1410 ifgr.ifgr_len = len; 1411 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1412 err(1, "calloc"); 1413 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1414 err(1, "SIOCGIFGMEMB"); 1415 1416 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1417 ifg++) { 1418 len -= sizeof(struct ifg_req); 1419 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1420 continue; 1421 if (h == NULL) 1422 h = n; 1423 else { 1424 h->tail->next = n; 1425 h->tail = n->tail; 1426 } 1427 } 1428 free(ifgr.ifgr_groups); 1429 1430 return (h); 1431 } 1432 1433 struct node_host * 1434 ifa_lookup(char *ifa_name, int flags) 1435 { 1436 struct node_host *p = NULL, *h = NULL, *n = NULL; 1437 int got4 = 0, got6 = 0; 1438 const char *last_if = NULL; 1439 1440 /* first load iftab and isgroup_map */ 1441 if (iftab == NULL) 1442 ifa_load(); 1443 1444 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1445 return (h); 1446 1447 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1448 ifa_name = NULL; 1449 1450 for (p = iftab; p; p = p->next) { 1451 if (ifa_skip_if(ifa_name, p)) 1452 continue; 1453 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1454 continue; 1455 if ((flags & PFI_AFLAG_BROADCAST) && 1456 !(p->ifa_flags & IFF_BROADCAST)) 1457 continue; 1458 if ((flags & PFI_AFLAG_PEER) && 1459 !(p->ifa_flags & IFF_POINTOPOINT)) 1460 continue; 1461 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1462 continue; 1463 if (last_if == NULL || strcmp(last_if, p->ifname)) 1464 got4 = got6 = 0; 1465 last_if = p->ifname; 1466 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1467 continue; 1468 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1469 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1470 continue; 1471 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1472 continue; 1473 if (p->af == AF_INET) 1474 got4 = 1; 1475 else 1476 got6 = 1; 1477 n = calloc(1, sizeof(struct node_host)); 1478 if (n == NULL) 1479 err(1, "address: calloc"); 1480 n->af = p->af; 1481 if (flags & PFI_AFLAG_BROADCAST) 1482 memcpy(&n->addr.v.a.addr, &p->bcast, 1483 sizeof(struct pf_addr)); 1484 else if (flags & PFI_AFLAG_PEER) 1485 memcpy(&n->addr.v.a.addr, &p->peer, 1486 sizeof(struct pf_addr)); 1487 else 1488 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1489 sizeof(struct pf_addr)); 1490 if (flags & PFI_AFLAG_NETWORK) 1491 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1492 else { 1493 if (n->af == AF_INET) { 1494 if (p->ifa_flags & IFF_LOOPBACK && 1495 p->ifa_flags & IFF_LINK1) 1496 memcpy(&n->addr.v.a.mask, 1497 &p->addr.v.a.mask, 1498 sizeof(struct pf_addr)); 1499 else 1500 set_ipmask(n, 32); 1501 } else 1502 set_ipmask(n, 128); 1503 } 1504 n->ifindex = p->ifindex; 1505 n->ifname = strdup(p->ifname); 1506 1507 n->next = NULL; 1508 n->tail = n; 1509 if (h == NULL) 1510 h = n; 1511 else { 1512 h->tail->next = n; 1513 h->tail = n; 1514 } 1515 } 1516 return (h); 1517 } 1518 1519 int 1520 ifa_skip_if(const char *filter, struct node_host *p) 1521 { 1522 int n; 1523 1524 if (p->af != AF_INET && p->af != AF_INET6) 1525 return (1); 1526 if (filter == NULL || !*filter) 1527 return (0); 1528 if (!strcmp(p->ifname, filter)) 1529 return (0); /* exact match */ 1530 n = strlen(filter); 1531 if (n < 1 || n >= IFNAMSIZ) 1532 return (1); /* sanity check */ 1533 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1534 return (1); /* only do exact match in that case */ 1535 if (strncmp(p->ifname, filter, n)) 1536 return (1); /* prefix doesn't match */ 1537 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1538 } 1539 1540 1541 struct node_host * 1542 host(const char *s) 1543 { 1544 struct node_host *h = NULL; 1545 int mask, v4mask, v6mask, cont = 1; 1546 char *p, *q, *ps; 1547 1548 if ((p = strrchr(s, '/')) != NULL) { 1549 mask = strtol(p+1, &q, 0); 1550 if (!q || *q || mask > 128 || q == (p+1)) { 1551 fprintf(stderr, "invalid netmask '%s'\n", p); 1552 return (NULL); 1553 } 1554 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1555 err(1, "host: malloc"); 1556 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1557 v4mask = v6mask = mask; 1558 } else { 1559 if ((ps = strdup(s)) == NULL) 1560 err(1, "host: strdup"); 1561 v4mask = 32; 1562 v6mask = 128; 1563 mask = -1; 1564 } 1565 1566 /* IPv4 address? */ 1567 if (cont && (h = host_v4(s, mask)) != NULL) 1568 cont = 0; 1569 1570 /* IPv6 address? */ 1571 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1572 cont = 0; 1573 1574 /* interface with this name exists? */ 1575 /* expensive with thousands of interfaces - prioritze IPv4/6 check */ 1576 if (cont && (h = host_if(ps, mask)) != NULL) 1577 cont = 0; 1578 1579 /* dns lookup */ 1580 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1581 cont = 0; 1582 free(ps); 1583 1584 if (h == NULL || cont == 1) { 1585 fprintf(stderr, "no IP address found for %s\n", s); 1586 return (NULL); 1587 } 1588 return (h); 1589 } 1590 1591 struct node_host * 1592 host_if(const char *s, int mask) 1593 { 1594 struct node_host *n, *h = NULL; 1595 char *p, *ps; 1596 int flags = 0; 1597 1598 if ((ps = strdup(s)) == NULL) 1599 err(1, "host_if: strdup"); 1600 while ((p = strrchr(ps, ':')) != NULL) { 1601 if (!strcmp(p+1, "network")) 1602 flags |= PFI_AFLAG_NETWORK; 1603 else if (!strcmp(p+1, "broadcast")) 1604 flags |= PFI_AFLAG_BROADCAST; 1605 else if (!strcmp(p+1, "peer")) 1606 flags |= PFI_AFLAG_PEER; 1607 else if (!strcmp(p+1, "0")) 1608 flags |= PFI_AFLAG_NOALIAS; 1609 else { 1610 free(ps); 1611 return (NULL); 1612 } 1613 *p = '\0'; 1614 } 1615 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1616 fprintf(stderr, "illegal combination of interface modifiers\n"); 1617 free(ps); 1618 return (NULL); 1619 } 1620 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1621 fprintf(stderr, "network or broadcast lookup, but " 1622 "extra netmask given\n"); 1623 free(ps); 1624 return (NULL); 1625 } 1626 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1627 /* interface with this name exists */ 1628 h = ifa_lookup(ps, flags); 1629 for (n = h; n != NULL && mask > -1; n = n->next) 1630 set_ipmask(n, mask); 1631 } 1632 1633 free(ps); 1634 return (h); 1635 } 1636 1637 struct node_host * 1638 host_v4(const char *s, int mask) 1639 { 1640 struct node_host *h = NULL; 1641 struct in_addr ina; 1642 int bits = 32; 1643 1644 memset(&ina, 0, sizeof(struct in_addr)); 1645 if (strrchr(s, '/') != NULL) { 1646 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1647 return (NULL); 1648 } else { 1649 if (inet_pton(AF_INET, s, &ina) != 1) 1650 return (NULL); 1651 } 1652 1653 h = calloc(1, sizeof(struct node_host)); 1654 if (h == NULL) 1655 err(1, "address: calloc"); 1656 h->ifname = NULL; 1657 h->af = AF_INET; 1658 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1659 set_ipmask(h, bits); 1660 h->next = NULL; 1661 h->tail = h; 1662 1663 return (h); 1664 } 1665 1666 struct node_host * 1667 host_v6(const char *s, int mask) 1668 { 1669 struct addrinfo hints, *res; 1670 struct node_host *h = NULL; 1671 1672 memset(&hints, 0, sizeof(hints)); 1673 hints.ai_family = AF_INET6; 1674 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1675 hints.ai_flags = AI_NUMERICHOST; 1676 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1677 h = calloc(1, sizeof(struct node_host)); 1678 if (h == NULL) 1679 err(1, "address: calloc"); 1680 h->ifname = NULL; 1681 h->af = AF_INET6; 1682 memcpy(&h->addr.v.a.addr, 1683 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1684 sizeof(h->addr.v.a.addr)); 1685 h->ifindex = 1686 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1687 set_ipmask(h, mask); 1688 freeaddrinfo(res); 1689 h->next = NULL; 1690 h->tail = h; 1691 } 1692 1693 return (h); 1694 } 1695 1696 struct node_host * 1697 host_dns(const char *s, int v4mask, int v6mask) 1698 { 1699 struct addrinfo hints, *res0, *res; 1700 struct node_host *n, *h = NULL; 1701 int error, noalias = 0; 1702 int got4 = 0, got6 = 0; 1703 char *p, *ps; 1704 1705 if ((ps = strdup(s)) == NULL) 1706 err(1, "host_dns: strdup"); 1707 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1708 noalias = 1; 1709 *p = '\0'; 1710 } 1711 memset(&hints, 0, sizeof(hints)); 1712 hints.ai_family = PF_UNSPEC; 1713 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1714 error = getaddrinfo(ps, NULL, &hints, &res0); 1715 if (error) { 1716 free(ps); 1717 return (h); 1718 } 1719 1720 for (res = res0; res; res = res->ai_next) { 1721 if (res->ai_family != AF_INET && 1722 res->ai_family != AF_INET6) 1723 continue; 1724 if (noalias) { 1725 if (res->ai_family == AF_INET) { 1726 if (got4) 1727 continue; 1728 got4 = 1; 1729 } else { 1730 if (got6) 1731 continue; 1732 got6 = 1; 1733 } 1734 } 1735 n = calloc(1, sizeof(struct node_host)); 1736 if (n == NULL) 1737 err(1, "host_dns: calloc"); 1738 n->ifname = NULL; 1739 n->af = res->ai_family; 1740 if (res->ai_family == AF_INET) { 1741 memcpy(&n->addr.v.a.addr, 1742 &((struct sockaddr_in *) 1743 res->ai_addr)->sin_addr.s_addr, 1744 sizeof(struct in_addr)); 1745 set_ipmask(n, v4mask); 1746 } else { 1747 memcpy(&n->addr.v.a.addr, 1748 &((struct sockaddr_in6 *) 1749 res->ai_addr)->sin6_addr.s6_addr, 1750 sizeof(struct in6_addr)); 1751 n->ifindex = 1752 ((struct sockaddr_in6 *) 1753 res->ai_addr)->sin6_scope_id; 1754 set_ipmask(n, v6mask); 1755 } 1756 n->next = NULL; 1757 n->tail = n; 1758 if (h == NULL) 1759 h = n; 1760 else { 1761 h->tail->next = n; 1762 h->tail = n; 1763 } 1764 } 1765 freeaddrinfo(res0); 1766 free(ps); 1767 1768 return (h); 1769 } 1770 1771 /* 1772 * convert a hostname to a list of addresses and put them in the given buffer. 1773 * test: 1774 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1775 */ 1776 int 1777 append_addr(struct pfr_buffer *b, char *s, int test) 1778 { 1779 char *r; 1780 struct node_host *h, *n; 1781 int rv, not = 0; 1782 1783 for (r = s; *r == '!'; r++) 1784 not = !not; 1785 if ((n = host(r)) == NULL) { 1786 errno = 0; 1787 return (-1); 1788 } 1789 rv = append_addr_host(b, n, test, not); 1790 do { 1791 h = n; 1792 n = n->next; 1793 free(h); 1794 } while (n != NULL); 1795 return (rv); 1796 } 1797 1798 /* 1799 * same as previous function, but with a pre-parsed input and the ability 1800 * to "negate" the result. Does not free the node_host list. 1801 * not: 1802 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1803 */ 1804 int 1805 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1806 { 1807 int bits; 1808 struct pfr_addr addr; 1809 1810 do { 1811 bzero(&addr, sizeof(addr)); 1812 addr.pfra_not = n->not ^ not; 1813 addr.pfra_af = n->af; 1814 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1815 switch (n->af) { 1816 case AF_INET: 1817 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1818 bits = 32; 1819 break; 1820 case AF_INET6: 1821 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1822 sizeof(struct in6_addr)); 1823 bits = 128; 1824 break; 1825 default: 1826 errno = EINVAL; 1827 return (-1); 1828 } 1829 if ((test && (not || addr.pfra_net != bits)) || 1830 addr.pfra_net > bits) { 1831 errno = EINVAL; 1832 return (-1); 1833 } 1834 if (pfr_buf_add(b, &addr)) 1835 return (-1); 1836 } while ((n = n->next) != NULL); 1837 1838 return (0); 1839 } 1840 1841 int 1842 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1843 { 1844 struct pfioc_trans_e trans; 1845 1846 bzero(&trans, sizeof(trans)); 1847 trans.rs_num = rs_num; 1848 if (strlcpy(trans.anchor, anchor, 1849 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1850 errx(1, "pfctl_add_trans: strlcpy"); 1851 1852 return pfr_buf_add(buf, &trans); 1853 } 1854 1855 u_int32_t 1856 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1857 { 1858 struct pfioc_trans_e *p; 1859 1860 PFRB_FOREACH(p, buf) 1861 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1862 return (p->ticket); 1863 errx(1, "pfctl_get_ticket: assertion failed"); 1864 } 1865 1866 int 1867 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1868 { 1869 struct pfioc_trans trans; 1870 1871 bzero(&trans, sizeof(trans)); 1872 trans.size = buf->pfrb_size - from; 1873 trans.esize = sizeof(struct pfioc_trans_e); 1874 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1875 return ioctl(dev, cmd, &trans); 1876 } 1877