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 <assert.h> 54 #include <search.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <ctype.h> 59 #include <netdb.h> 60 #include <stdarg.h> 61 #include <errno.h> 62 #include <err.h> 63 #include <ifaddrs.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", 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 %14ju %14s\n", "current entries", s->states, ""); 580 TAILQ_FOREACH(c, &s->fcounters, entry) { 581 printf(" %-25s %14ju ", 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 %14ju %14s\n", "current entries", 591 s->src_nodes, ""); 592 TAILQ_FOREACH(c, &s->scounters, entry) { 593 printf(" %-25s %14ju ", 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 %14ju ", 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 %14ju ", 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 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE); 623 printf(" %-25s %s\n", "mode", 624 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]); 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->ridentifier) 1023 printf(" ridentifier %u", r->ridentifier); 1024 if (r->qname[0] && r->pqname[0]) 1025 printf(" queue(%s, %s)", r->qname, r->pqname); 1026 else if (r->qname[0]) 1027 printf(" queue %s", r->qname); 1028 if (r->tagname[0]) 1029 printf(" tag %s", r->tagname); 1030 if (r->match_tagname[0]) { 1031 if (r->match_tag_not) 1032 printf(" !"); 1033 printf(" tagged %s", r->match_tagname); 1034 } 1035 if (r->rtableid != -1) 1036 printf(" rtable %u", r->rtableid); 1037 if (r->divert.port) { 1038 #ifdef __FreeBSD__ 1039 printf(" divert-to %u", ntohs(r->divert.port)); 1040 #else 1041 if (PF_AZERO(&r->divert.addr, r->af)) { 1042 printf(" divert-reply"); 1043 } else { 1044 /* XXX cut&paste from print_addr */ 1045 char buf[48]; 1046 1047 printf(" divert-to "); 1048 if (inet_ntop(r->af, &r->divert.addr, buf, 1049 sizeof(buf)) == NULL) 1050 printf("?"); 1051 else 1052 printf("%s", buf); 1053 printf(" port %u", ntohs(r->divert.port)); 1054 } 1055 #endif 1056 } 1057 if (!anchor_call[0] && (r->action == PF_NAT || 1058 r->action == PF_BINAT || r->action == PF_RDR)) { 1059 printf(" -> "); 1060 print_pool(&r->rpool, r->rpool.proxy_port[0], 1061 r->rpool.proxy_port[1], r->af, r->action); 1062 } 1063 } 1064 1065 void 1066 print_tabledef(const char *name, int flags, int addrs, 1067 struct node_tinithead *nodes) 1068 { 1069 struct node_tinit *ti, *nti; 1070 struct node_host *h; 1071 1072 printf("table <%s>", name); 1073 if (flags & PFR_TFLAG_CONST) 1074 printf(" const"); 1075 if (flags & PFR_TFLAG_PERSIST) 1076 printf(" persist"); 1077 if (flags & PFR_TFLAG_COUNTERS) 1078 printf(" counters"); 1079 SIMPLEQ_FOREACH(ti, nodes, entries) { 1080 if (ti->file) { 1081 printf(" file \"%s\"", ti->file); 1082 continue; 1083 } 1084 printf(" {"); 1085 for (;;) { 1086 for (h = ti->host; h != NULL; h = h->next) { 1087 printf(h->not ? " !" : " "); 1088 print_addr(&h->addr, h->af, 0); 1089 } 1090 nti = SIMPLEQ_NEXT(ti, entries); 1091 if (nti != NULL && nti->file == NULL) 1092 ti = nti; /* merge lists */ 1093 else 1094 break; 1095 } 1096 printf(" }"); 1097 } 1098 if (addrs && SIMPLEQ_EMPTY(nodes)) 1099 printf(" { }"); 1100 printf("\n"); 1101 } 1102 1103 int 1104 parse_flags(char *s) 1105 { 1106 char *p, *q; 1107 u_int8_t f = 0; 1108 1109 for (p = s; *p; p++) { 1110 if ((q = strchr(tcpflags, *p)) == NULL) 1111 return -1; 1112 else 1113 f |= 1 << (q - tcpflags); 1114 } 1115 return (f ? f : PF_TH_ALL); 1116 } 1117 1118 void 1119 set_ipmask(struct node_host *h, u_int8_t b) 1120 { 1121 struct pf_addr *m, *n; 1122 int i, j = 0; 1123 1124 m = &h->addr.v.a.mask; 1125 memset(m, 0, sizeof(*m)); 1126 1127 while (b >= 32) { 1128 m->addr32[j++] = 0xffffffff; 1129 b -= 32; 1130 } 1131 for (i = 31; i > 31-b; --i) 1132 m->addr32[j] |= (1 << i); 1133 if (b) 1134 m->addr32[j] = htonl(m->addr32[j]); 1135 1136 /* Mask off bits of the address that will never be used. */ 1137 n = &h->addr.v.a.addr; 1138 if (h->addr.type == PF_ADDR_ADDRMASK) 1139 for (i = 0; i < 4; i++) 1140 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1141 } 1142 1143 int 1144 check_netmask(struct node_host *h, sa_family_t af) 1145 { 1146 struct node_host *n = NULL; 1147 struct pf_addr *m; 1148 1149 for (n = h; n != NULL; n = n->next) { 1150 if (h->addr.type == PF_ADDR_TABLE) 1151 continue; 1152 m = &h->addr.v.a.mask; 1153 /* fix up netmask for dynaddr */ 1154 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1155 unmask(m, AF_INET6) > 32) 1156 set_ipmask(n, 32); 1157 /* netmasks > 32 bit are invalid on v4 */ 1158 if (af == AF_INET && 1159 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1160 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1161 unmask(m, AF_INET6)); 1162 return (1); 1163 } 1164 } 1165 return (0); 1166 } 1167 1168 /* interface lookup routines */ 1169 1170 static struct node_host *iftab; 1171 1172 /* 1173 * Retrieve the list of groups this interface is a member of and make sure 1174 * each group is in the group map. 1175 */ 1176 static void 1177 ifa_add_groups_to_map(char *ifa_name) 1178 { 1179 int s, len; 1180 struct ifgroupreq ifgr; 1181 struct ifg_req *ifg; 1182 1183 s = get_query_socket(); 1184 1185 /* Get size of group list for this interface */ 1186 memset(&ifgr, 0, sizeof(ifgr)); 1187 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1188 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1189 err(1, "SIOCGIFGROUP"); 1190 1191 /* Retrieve group list for this interface */ 1192 len = ifgr.ifgr_len; 1193 ifgr.ifgr_groups = 1194 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1195 sizeof(struct ifg_req)); 1196 if (ifgr.ifgr_groups == NULL) 1197 err(1, "calloc"); 1198 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1199 err(1, "SIOCGIFGROUP"); 1200 1201 ifg = ifgr.ifgr_groups; 1202 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1203 len -= sizeof(struct ifg_req); 1204 if (strcmp(ifg->ifgrq_group, "all")) { 1205 ENTRY item; 1206 ENTRY *ret_item; 1207 int *answer; 1208 1209 item.key = ifg->ifgrq_group; 1210 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1211 struct ifgroupreq ifgr2; 1212 1213 /* Don't know the answer yet */ 1214 if ((answer = malloc(sizeof(int))) == NULL) 1215 err(1, "malloc"); 1216 1217 bzero(&ifgr2, sizeof(ifgr2)); 1218 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1219 sizeof(ifgr2.ifgr_name)); 1220 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1221 *answer = ifgr2.ifgr_len; 1222 else 1223 *answer = 0; 1224 1225 item.key = strdup(ifg->ifgrq_group); 1226 item.data = answer; 1227 if (hsearch_r(item, ENTER, &ret_item, 1228 &isgroup_map) == 0) 1229 err(1, "interface group query response" 1230 " map insert"); 1231 } 1232 } 1233 } 1234 free(ifgr.ifgr_groups); 1235 } 1236 1237 void 1238 ifa_load(void) 1239 { 1240 struct ifaddrs *ifap, *ifa; 1241 struct node_host *n = NULL, *h = NULL; 1242 1243 if (getifaddrs(&ifap) < 0) 1244 err(1, "getifaddrs"); 1245 1246 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1247 if (!(ifa->ifa_addr->sa_family == AF_INET || 1248 ifa->ifa_addr->sa_family == AF_INET6 || 1249 ifa->ifa_addr->sa_family == AF_LINK)) 1250 continue; 1251 n = calloc(1, sizeof(struct node_host)); 1252 if (n == NULL) 1253 err(1, "address: calloc"); 1254 n->af = ifa->ifa_addr->sa_family; 1255 n->ifa_flags = ifa->ifa_flags; 1256 #ifdef __KAME__ 1257 if (n->af == AF_INET6 && 1258 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1259 ifa->ifa_addr)->sin6_addr) && 1260 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1261 0) { 1262 struct sockaddr_in6 *sin6; 1263 1264 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1265 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1266 sin6->sin6_addr.s6_addr[3]; 1267 sin6->sin6_addr.s6_addr[2] = 0; 1268 sin6->sin6_addr.s6_addr[3] = 0; 1269 } 1270 #endif 1271 n->ifindex = 0; 1272 if (n->af == AF_INET) { 1273 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1274 ifa->ifa_addr)->sin_addr.s_addr, 1275 sizeof(struct in_addr)); 1276 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1277 ifa->ifa_netmask)->sin_addr.s_addr, 1278 sizeof(struct in_addr)); 1279 if (ifa->ifa_broadaddr != NULL) 1280 memcpy(&n->bcast, &((struct sockaddr_in *) 1281 ifa->ifa_broadaddr)->sin_addr.s_addr, 1282 sizeof(struct in_addr)); 1283 if (ifa->ifa_dstaddr != NULL) 1284 memcpy(&n->peer, &((struct sockaddr_in *) 1285 ifa->ifa_dstaddr)->sin_addr.s_addr, 1286 sizeof(struct in_addr)); 1287 } else if (n->af == AF_INET6) { 1288 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1289 ifa->ifa_addr)->sin6_addr.s6_addr, 1290 sizeof(struct in6_addr)); 1291 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1292 ifa->ifa_netmask)->sin6_addr.s6_addr, 1293 sizeof(struct in6_addr)); 1294 if (ifa->ifa_broadaddr != NULL) 1295 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1296 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1297 sizeof(struct in6_addr)); 1298 if (ifa->ifa_dstaddr != NULL) 1299 memcpy(&n->peer, &((struct sockaddr_in6 *) 1300 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1301 sizeof(struct in6_addr)); 1302 n->ifindex = ((struct sockaddr_in6 *) 1303 ifa->ifa_addr)->sin6_scope_id; 1304 } else if (n->af == AF_LINK) { 1305 ifa_add_groups_to_map(ifa->ifa_name); 1306 } 1307 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1308 err(1, "ifa_load: strdup"); 1309 n->next = NULL; 1310 n->tail = n; 1311 if (h == NULL) 1312 h = n; 1313 else { 1314 h->tail->next = n; 1315 h->tail = n; 1316 } 1317 } 1318 1319 iftab = h; 1320 freeifaddrs(ifap); 1321 } 1322 1323 static int 1324 get_socket_domain(void) 1325 { 1326 int sdom; 1327 1328 sdom = AF_UNSPEC; 1329 #ifdef WITH_INET6 1330 if (sdom == AF_UNSPEC && feature_present("inet6")) 1331 sdom = AF_INET6; 1332 #endif 1333 #ifdef WITH_INET 1334 if (sdom == AF_UNSPEC && feature_present("inet")) 1335 sdom = AF_INET; 1336 #endif 1337 if (sdom == AF_UNSPEC) 1338 sdom = AF_LINK; 1339 1340 return (sdom); 1341 } 1342 1343 int 1344 get_query_socket(void) 1345 { 1346 static int s = -1; 1347 1348 if (s == -1) { 1349 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1350 err(1, "socket"); 1351 } 1352 1353 return (s); 1354 } 1355 1356 /* 1357 * Returns the response len if the name is a group, otherwise returns 0. 1358 */ 1359 static int 1360 is_a_group(char *name) 1361 { 1362 ENTRY item; 1363 ENTRY *ret_item; 1364 1365 item.key = name; 1366 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1367 return (0); 1368 1369 return (*(int *)ret_item->data); 1370 } 1371 1372 struct node_host * 1373 ifa_exists(char *ifa_name) 1374 { 1375 struct node_host *n; 1376 1377 if (iftab == NULL) 1378 ifa_load(); 1379 1380 /* check whether this is a group */ 1381 if (is_a_group(ifa_name)) { 1382 /* fake a node_host */ 1383 if ((n = calloc(1, sizeof(*n))) == NULL) 1384 err(1, "calloc"); 1385 if ((n->ifname = strdup(ifa_name)) == NULL) 1386 err(1, "strdup"); 1387 return (n); 1388 } 1389 1390 for (n = iftab; n; n = n->next) { 1391 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1392 return (n); 1393 } 1394 1395 return (NULL); 1396 } 1397 1398 struct node_host * 1399 ifa_grouplookup(char *ifa_name, int flags) 1400 { 1401 struct ifg_req *ifg; 1402 struct ifgroupreq ifgr; 1403 int s, len; 1404 struct node_host *n, *h = NULL; 1405 1406 s = get_query_socket(); 1407 len = is_a_group(ifa_name); 1408 if (len == 0) 1409 return (NULL); 1410 bzero(&ifgr, sizeof(ifgr)); 1411 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1412 ifgr.ifgr_len = len; 1413 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1414 err(1, "calloc"); 1415 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1416 err(1, "SIOCGIFGMEMB"); 1417 1418 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1419 ifg++) { 1420 len -= sizeof(struct ifg_req); 1421 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1422 continue; 1423 if (h == NULL) 1424 h = n; 1425 else { 1426 h->tail->next = n; 1427 h->tail = n->tail; 1428 } 1429 } 1430 free(ifgr.ifgr_groups); 1431 1432 return (h); 1433 } 1434 1435 struct node_host * 1436 ifa_lookup(char *ifa_name, int flags) 1437 { 1438 struct node_host *p = NULL, *h = NULL, *n = NULL; 1439 int got4 = 0, got6 = 0; 1440 const char *last_if = NULL; 1441 1442 /* first load iftab and isgroup_map */ 1443 if (iftab == NULL) 1444 ifa_load(); 1445 1446 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1447 return (h); 1448 1449 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1450 ifa_name = NULL; 1451 1452 for (p = iftab; p; p = p->next) { 1453 if (ifa_skip_if(ifa_name, p)) 1454 continue; 1455 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1456 continue; 1457 if ((flags & PFI_AFLAG_BROADCAST) && 1458 !(p->ifa_flags & IFF_BROADCAST)) 1459 continue; 1460 if ((flags & PFI_AFLAG_PEER) && 1461 !(p->ifa_flags & IFF_POINTOPOINT)) 1462 continue; 1463 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1464 continue; 1465 if (last_if == NULL || strcmp(last_if, p->ifname)) 1466 got4 = got6 = 0; 1467 last_if = p->ifname; 1468 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1469 continue; 1470 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1471 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1472 continue; 1473 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1474 continue; 1475 if (p->af == AF_INET) 1476 got4 = 1; 1477 else 1478 got6 = 1; 1479 n = calloc(1, sizeof(struct node_host)); 1480 if (n == NULL) 1481 err(1, "address: calloc"); 1482 n->af = p->af; 1483 if (flags & PFI_AFLAG_BROADCAST) 1484 memcpy(&n->addr.v.a.addr, &p->bcast, 1485 sizeof(struct pf_addr)); 1486 else if (flags & PFI_AFLAG_PEER) 1487 memcpy(&n->addr.v.a.addr, &p->peer, 1488 sizeof(struct pf_addr)); 1489 else 1490 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1491 sizeof(struct pf_addr)); 1492 if (flags & PFI_AFLAG_NETWORK) 1493 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1494 else { 1495 if (n->af == AF_INET) { 1496 if (p->ifa_flags & IFF_LOOPBACK && 1497 p->ifa_flags & IFF_LINK1) 1498 memcpy(&n->addr.v.a.mask, 1499 &p->addr.v.a.mask, 1500 sizeof(struct pf_addr)); 1501 else 1502 set_ipmask(n, 32); 1503 } else 1504 set_ipmask(n, 128); 1505 } 1506 n->ifindex = p->ifindex; 1507 n->ifname = strdup(p->ifname); 1508 1509 n->next = NULL; 1510 n->tail = n; 1511 if (h == NULL) 1512 h = n; 1513 else { 1514 h->tail->next = n; 1515 h->tail = n; 1516 } 1517 } 1518 return (h); 1519 } 1520 1521 int 1522 ifa_skip_if(const char *filter, struct node_host *p) 1523 { 1524 int n; 1525 1526 if (p->af != AF_INET && p->af != AF_INET6) 1527 return (1); 1528 if (filter == NULL || !*filter) 1529 return (0); 1530 if (!strcmp(p->ifname, filter)) 1531 return (0); /* exact match */ 1532 n = strlen(filter); 1533 if (n < 1 || n >= IFNAMSIZ) 1534 return (1); /* sanity check */ 1535 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1536 return (1); /* only do exact match in that case */ 1537 if (strncmp(p->ifname, filter, n)) 1538 return (1); /* prefix doesn't match */ 1539 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1540 } 1541 1542 1543 struct node_host * 1544 host(const char *s) 1545 { 1546 struct node_host *h = NULL; 1547 int mask, v4mask, v6mask, cont = 1; 1548 char *p, *q, *ps; 1549 1550 if ((p = strrchr(s, '/')) != NULL) { 1551 mask = strtol(p+1, &q, 0); 1552 if (!q || *q || mask > 128 || q == (p+1)) { 1553 fprintf(stderr, "invalid netmask '%s'\n", p); 1554 return (NULL); 1555 } 1556 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1557 err(1, "host: malloc"); 1558 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1559 v4mask = v6mask = mask; 1560 } else { 1561 if ((ps = strdup(s)) == NULL) 1562 err(1, "host: strdup"); 1563 v4mask = 32; 1564 v6mask = 128; 1565 mask = -1; 1566 } 1567 1568 /* IPv4 address? */ 1569 if (cont && (h = host_v4(s, mask)) != NULL) 1570 cont = 0; 1571 1572 /* IPv6 address? */ 1573 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1574 cont = 0; 1575 1576 /* interface with this name exists? */ 1577 /* expensive with thousands of interfaces - prioritze IPv4/6 check */ 1578 if (cont && (h = host_if(ps, mask)) != NULL) 1579 cont = 0; 1580 1581 /* dns lookup */ 1582 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1583 cont = 0; 1584 free(ps); 1585 1586 if (h == NULL || cont == 1) { 1587 fprintf(stderr, "no IP address found for %s\n", s); 1588 return (NULL); 1589 } 1590 return (h); 1591 } 1592 1593 struct node_host * 1594 host_if(const char *s, int mask) 1595 { 1596 struct node_host *n, *h = NULL; 1597 char *p, *ps; 1598 int flags = 0; 1599 1600 if ((ps = strdup(s)) == NULL) 1601 err(1, "host_if: strdup"); 1602 while ((p = strrchr(ps, ':')) != NULL) { 1603 if (!strcmp(p+1, "network")) 1604 flags |= PFI_AFLAG_NETWORK; 1605 else if (!strcmp(p+1, "broadcast")) 1606 flags |= PFI_AFLAG_BROADCAST; 1607 else if (!strcmp(p+1, "peer")) 1608 flags |= PFI_AFLAG_PEER; 1609 else if (!strcmp(p+1, "0")) 1610 flags |= PFI_AFLAG_NOALIAS; 1611 else { 1612 free(ps); 1613 return (NULL); 1614 } 1615 *p = '\0'; 1616 } 1617 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1618 fprintf(stderr, "illegal combination of interface modifiers\n"); 1619 free(ps); 1620 return (NULL); 1621 } 1622 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1623 fprintf(stderr, "network or broadcast lookup, but " 1624 "extra netmask given\n"); 1625 free(ps); 1626 return (NULL); 1627 } 1628 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1629 /* interface with this name exists */ 1630 h = ifa_lookup(ps, flags); 1631 for (n = h; n != NULL && mask > -1; n = n->next) 1632 set_ipmask(n, mask); 1633 } 1634 1635 free(ps); 1636 return (h); 1637 } 1638 1639 struct node_host * 1640 host_v4(const char *s, int mask) 1641 { 1642 struct node_host *h = NULL; 1643 struct in_addr ina; 1644 int bits = 32; 1645 1646 memset(&ina, 0, sizeof(struct in_addr)); 1647 if (strrchr(s, '/') != NULL) { 1648 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1649 return (NULL); 1650 } else { 1651 if (inet_pton(AF_INET, s, &ina) != 1) 1652 return (NULL); 1653 } 1654 1655 h = calloc(1, sizeof(struct node_host)); 1656 if (h == NULL) 1657 err(1, "address: calloc"); 1658 h->ifname = NULL; 1659 h->af = AF_INET; 1660 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1661 set_ipmask(h, bits); 1662 h->next = NULL; 1663 h->tail = h; 1664 1665 return (h); 1666 } 1667 1668 struct node_host * 1669 host_v6(const char *s, int mask) 1670 { 1671 struct addrinfo hints, *res; 1672 struct node_host *h = NULL; 1673 1674 memset(&hints, 0, sizeof(hints)); 1675 hints.ai_family = AF_INET6; 1676 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1677 hints.ai_flags = AI_NUMERICHOST; 1678 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1679 h = calloc(1, sizeof(struct node_host)); 1680 if (h == NULL) 1681 err(1, "address: calloc"); 1682 h->ifname = NULL; 1683 h->af = AF_INET6; 1684 memcpy(&h->addr.v.a.addr, 1685 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1686 sizeof(h->addr.v.a.addr)); 1687 h->ifindex = 1688 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1689 set_ipmask(h, mask); 1690 freeaddrinfo(res); 1691 h->next = NULL; 1692 h->tail = h; 1693 } 1694 1695 return (h); 1696 } 1697 1698 struct node_host * 1699 host_dns(const char *s, int v4mask, int v6mask) 1700 { 1701 struct addrinfo hints, *res0, *res; 1702 struct node_host *n, *h = NULL; 1703 int error, noalias = 0; 1704 int got4 = 0, got6 = 0; 1705 char *p, *ps; 1706 1707 if ((ps = strdup(s)) == NULL) 1708 err(1, "host_dns: strdup"); 1709 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1710 noalias = 1; 1711 *p = '\0'; 1712 } 1713 memset(&hints, 0, sizeof(hints)); 1714 hints.ai_family = PF_UNSPEC; 1715 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1716 error = getaddrinfo(ps, NULL, &hints, &res0); 1717 if (error) { 1718 free(ps); 1719 return (h); 1720 } 1721 1722 for (res = res0; res; res = res->ai_next) { 1723 if (res->ai_family != AF_INET && 1724 res->ai_family != AF_INET6) 1725 continue; 1726 if (noalias) { 1727 if (res->ai_family == AF_INET) { 1728 if (got4) 1729 continue; 1730 got4 = 1; 1731 } else { 1732 if (got6) 1733 continue; 1734 got6 = 1; 1735 } 1736 } 1737 n = calloc(1, sizeof(struct node_host)); 1738 if (n == NULL) 1739 err(1, "host_dns: calloc"); 1740 n->ifname = NULL; 1741 n->af = res->ai_family; 1742 if (res->ai_family == AF_INET) { 1743 memcpy(&n->addr.v.a.addr, 1744 &((struct sockaddr_in *) 1745 res->ai_addr)->sin_addr.s_addr, 1746 sizeof(struct in_addr)); 1747 set_ipmask(n, v4mask); 1748 } else { 1749 memcpy(&n->addr.v.a.addr, 1750 &((struct sockaddr_in6 *) 1751 res->ai_addr)->sin6_addr.s6_addr, 1752 sizeof(struct in6_addr)); 1753 n->ifindex = 1754 ((struct sockaddr_in6 *) 1755 res->ai_addr)->sin6_scope_id; 1756 set_ipmask(n, v6mask); 1757 } 1758 n->next = NULL; 1759 n->tail = n; 1760 if (h == NULL) 1761 h = n; 1762 else { 1763 h->tail->next = n; 1764 h->tail = n; 1765 } 1766 } 1767 freeaddrinfo(res0); 1768 free(ps); 1769 1770 return (h); 1771 } 1772 1773 /* 1774 * convert a hostname to a list of addresses and put them in the given buffer. 1775 * test: 1776 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1777 */ 1778 int 1779 append_addr(struct pfr_buffer *b, char *s, int test) 1780 { 1781 char *r; 1782 struct node_host *h, *n; 1783 int rv, not = 0; 1784 1785 for (r = s; *r == '!'; r++) 1786 not = !not; 1787 if ((n = host(r)) == NULL) { 1788 errno = 0; 1789 return (-1); 1790 } 1791 rv = append_addr_host(b, n, test, not); 1792 do { 1793 h = n; 1794 n = n->next; 1795 free(h); 1796 } while (n != NULL); 1797 return (rv); 1798 } 1799 1800 /* 1801 * same as previous function, but with a pre-parsed input and the ability 1802 * to "negate" the result. Does not free the node_host list. 1803 * not: 1804 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1805 */ 1806 int 1807 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1808 { 1809 int bits; 1810 struct pfr_addr addr; 1811 1812 do { 1813 bzero(&addr, sizeof(addr)); 1814 addr.pfra_not = n->not ^ not; 1815 addr.pfra_af = n->af; 1816 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1817 switch (n->af) { 1818 case AF_INET: 1819 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1820 bits = 32; 1821 break; 1822 case AF_INET6: 1823 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1824 sizeof(struct in6_addr)); 1825 bits = 128; 1826 break; 1827 default: 1828 errno = EINVAL; 1829 return (-1); 1830 } 1831 if ((test && (not || addr.pfra_net != bits)) || 1832 addr.pfra_net > bits) { 1833 errno = EINVAL; 1834 return (-1); 1835 } 1836 if (pfr_buf_add(b, &addr)) 1837 return (-1); 1838 } while ((n = n->next) != NULL); 1839 1840 return (0); 1841 } 1842 1843 int 1844 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1845 { 1846 struct pfioc_trans_e trans; 1847 1848 bzero(&trans, sizeof(trans)); 1849 trans.rs_num = rs_num; 1850 if (strlcpy(trans.anchor, anchor, 1851 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1852 errx(1, "pfctl_add_trans: strlcpy"); 1853 1854 return pfr_buf_add(buf, &trans); 1855 } 1856 1857 u_int32_t 1858 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1859 { 1860 struct pfioc_trans_e *p; 1861 1862 PFRB_FOREACH(p, buf) 1863 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1864 return (p->ticket); 1865 errx(1, "pfctl_get_ticket: assertion failed"); 1866 } 1867 1868 int 1869 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1870 { 1871 struct pfioc_trans trans; 1872 1873 bzero(&trans, sizeof(trans)); 1874 trans.size = buf->pfrb_size - from; 1875 trans.esize = sizeof(struct pfioc_trans_e); 1876 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1877 return ioctl(dev, cmd, &trans); 1878 } 1879