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 <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <ctype.h> 57 #include <netdb.h> 58 #include <stdarg.h> 59 #include <errno.h> 60 #include <err.h> 61 #include <ifaddrs.h> 62 #include <unistd.h> 63 64 #include "pfctl_parser.h" 65 #include "pfctl.h" 66 67 void print_op (u_int8_t, const char *, const char *); 68 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int); 69 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned); 70 void print_flags (u_int8_t); 71 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 72 struct pf_rule_addr *, u_int8_t, u_int8_t, int, int); 73 int ifa_skip_if(const char *filter, struct node_host *p); 74 75 struct node_host *ifa_grouplookup(const char *, int); 76 struct node_host *host_if(const char *, int); 77 struct node_host *host_v4(const char *, int); 78 struct node_host *host_v6(const char *, int); 79 struct node_host *host_dns(const char *, int, int); 80 81 const char * const tcpflags = "FSRPAUEW"; 82 83 static const struct icmptypeent icmp_type[] = { 84 { "echoreq", ICMP_ECHO }, 85 { "echorep", ICMP_ECHOREPLY }, 86 { "unreach", ICMP_UNREACH }, 87 { "squench", ICMP_SOURCEQUENCH }, 88 { "redir", ICMP_REDIRECT }, 89 { "althost", ICMP_ALTHOSTADDR }, 90 { "routeradv", ICMP_ROUTERADVERT }, 91 { "routersol", ICMP_ROUTERSOLICIT }, 92 { "timex", ICMP_TIMXCEED }, 93 { "paramprob", ICMP_PARAMPROB }, 94 { "timereq", ICMP_TSTAMP }, 95 { "timerep", ICMP_TSTAMPREPLY }, 96 { "inforeq", ICMP_IREQ }, 97 { "inforep", ICMP_IREQREPLY }, 98 { "maskreq", ICMP_MASKREQ }, 99 { "maskrep", ICMP_MASKREPLY }, 100 { "trace", ICMP_TRACEROUTE }, 101 { "dataconv", ICMP_DATACONVERR }, 102 { "mobredir", ICMP_MOBILE_REDIRECT }, 103 { "ipv6-where", ICMP_IPV6_WHEREAREYOU }, 104 { "ipv6-here", ICMP_IPV6_IAMHERE }, 105 { "mobregreq", ICMP_MOBILE_REGREQUEST }, 106 { "mobregrep", ICMP_MOBILE_REGREPLY }, 107 { "skip", ICMP_SKIP }, 108 { "photuris", ICMP_PHOTURIS } 109 }; 110 111 static const struct icmptypeent icmp6_type[] = { 112 { "unreach", ICMP6_DST_UNREACH }, 113 { "toobig", ICMP6_PACKET_TOO_BIG }, 114 { "timex", ICMP6_TIME_EXCEEDED }, 115 { "paramprob", ICMP6_PARAM_PROB }, 116 { "echoreq", ICMP6_ECHO_REQUEST }, 117 { "echorep", ICMP6_ECHO_REPLY }, 118 { "groupqry", ICMP6_MEMBERSHIP_QUERY }, 119 { "listqry", MLD_LISTENER_QUERY }, 120 { "grouprep", ICMP6_MEMBERSHIP_REPORT }, 121 { "listenrep", MLD_LISTENER_REPORT }, 122 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION }, 123 { "listendone", MLD_LISTENER_DONE }, 124 { "routersol", ND_ROUTER_SOLICIT }, 125 { "routeradv", ND_ROUTER_ADVERT }, 126 { "neighbrsol", ND_NEIGHBOR_SOLICIT }, 127 { "neighbradv", ND_NEIGHBOR_ADVERT }, 128 { "redir", ND_REDIRECT }, 129 { "routrrenum", ICMP6_ROUTER_RENUMBERING }, 130 { "wrureq", ICMP6_WRUREQUEST }, 131 { "wrurep", ICMP6_WRUREPLY }, 132 { "fqdnreq", ICMP6_FQDN_QUERY }, 133 { "fqdnrep", ICMP6_FQDN_REPLY }, 134 { "niqry", ICMP6_NI_QUERY }, 135 { "nirep", ICMP6_NI_REPLY }, 136 { "mtraceresp", MLD_MTRACE_RESP }, 137 { "mtrace", MLD_MTRACE } 138 }; 139 140 static const struct icmpcodeent icmp_code[] = { 141 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET }, 142 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST }, 143 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL }, 144 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT }, 145 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG }, 146 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL }, 147 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN }, 148 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN }, 149 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED }, 150 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB }, 151 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB }, 152 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET }, 153 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST }, 154 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB }, 155 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE }, 156 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF }, 157 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET }, 158 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST }, 159 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET }, 160 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST }, 161 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL }, 162 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON }, 163 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS }, 164 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS }, 165 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR }, 166 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT }, 167 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH }, 168 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX }, 169 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED }, 170 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED } 171 }; 172 173 static const struct icmpcodeent icmp6_code[] = { 174 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN }, 175 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE }, 176 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR }, 177 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE }, 178 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR }, 179 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT }, 180 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT }, 181 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY }, 182 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER }, 183 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER }, 184 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK }, 185 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER } 186 }; 187 188 const struct pf_timeout pf_timeouts[] = { 189 { "tcp.first", PFTM_TCP_FIRST_PACKET }, 190 { "tcp.opening", PFTM_TCP_OPENING }, 191 { "tcp.established", PFTM_TCP_ESTABLISHED }, 192 { "tcp.closing", PFTM_TCP_CLOSING }, 193 { "tcp.finwait", PFTM_TCP_FIN_WAIT }, 194 { "tcp.closed", PFTM_TCP_CLOSED }, 195 { "tcp.tsdiff", PFTM_TS_DIFF }, 196 { "udp.first", PFTM_UDP_FIRST_PACKET }, 197 { "udp.single", PFTM_UDP_SINGLE }, 198 { "udp.multiple", PFTM_UDP_MULTIPLE }, 199 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 200 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 201 { "other.first", PFTM_OTHER_FIRST_PACKET }, 202 { "other.single", PFTM_OTHER_SINGLE }, 203 { "other.multiple", PFTM_OTHER_MULTIPLE }, 204 { "frag", PFTM_FRAG }, 205 { "interval", PFTM_INTERVAL }, 206 { "adaptive.start", PFTM_ADAPTIVE_START }, 207 { "adaptive.end", PFTM_ADAPTIVE_END }, 208 { "src.track", PFTM_SRC_NODE }, 209 { NULL, 0 } 210 }; 211 212 const struct icmptypeent * 213 geticmptypebynumber(u_int8_t type, sa_family_t af) 214 { 215 unsigned int i; 216 217 if (af != AF_INET6) { 218 for (i=0; i < nitems(icmp_type); i++) { 219 if (type == icmp_type[i].type) 220 return (&icmp_type[i]); 221 } 222 } else { 223 for (i=0; i < nitems(icmp6_type); i++) { 224 if (type == icmp6_type[i].type) 225 return (&icmp6_type[i]); 226 } 227 } 228 return (NULL); 229 } 230 231 const struct icmptypeent * 232 geticmptypebyname(char *w, sa_family_t af) 233 { 234 unsigned int i; 235 236 if (af != AF_INET6) { 237 for (i=0; i < nitems(icmp_type); i++) { 238 if (!strcmp(w, icmp_type[i].name)) 239 return (&icmp_type[i]); 240 } 241 } else { 242 for (i=0; i < nitems(icmp6_type); i++) { 243 if (!strcmp(w, icmp6_type[i].name)) 244 return (&icmp6_type[i]); 245 } 246 } 247 return (NULL); 248 } 249 250 const struct icmpcodeent * 251 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 252 { 253 unsigned int i; 254 255 if (af != AF_INET6) { 256 for (i=0; i < nitems(icmp_code); i++) { 257 if (type == icmp_code[i].type && 258 code == icmp_code[i].code) 259 return (&icmp_code[i]); 260 } 261 } else { 262 for (i=0; i < nitems(icmp6_code); i++) { 263 if (type == icmp6_code[i].type && 264 code == icmp6_code[i].code) 265 return (&icmp6_code[i]); 266 } 267 } 268 return (NULL); 269 } 270 271 const struct icmpcodeent * 272 geticmpcodebyname(u_long type, char *w, sa_family_t af) 273 { 274 unsigned int i; 275 276 if (af != AF_INET6) { 277 for (i=0; i < nitems(icmp_code); i++) { 278 if (type == icmp_code[i].type && 279 !strcmp(w, icmp_code[i].name)) 280 return (&icmp_code[i]); 281 } 282 } else { 283 for (i=0; i < nitems(icmp6_code); i++) { 284 if (type == icmp6_code[i].type && 285 !strcmp(w, icmp6_code[i].name)) 286 return (&icmp6_code[i]); 287 } 288 } 289 return (NULL); 290 } 291 292 void 293 print_op(u_int8_t op, const char *a1, const char *a2) 294 { 295 if (op == PF_OP_IRG) 296 printf(" %s >< %s", a1, a2); 297 else if (op == PF_OP_XRG) 298 printf(" %s <> %s", a1, a2); 299 else if (op == PF_OP_EQ) 300 printf(" = %s", a1); 301 else if (op == PF_OP_NE) 302 printf(" != %s", a1); 303 else if (op == PF_OP_LT) 304 printf(" < %s", a1); 305 else if (op == PF_OP_LE) 306 printf(" <= %s", a1); 307 else if (op == PF_OP_GT) 308 printf(" > %s", a1); 309 else if (op == PF_OP_GE) 310 printf(" >= %s", a1); 311 else if (op == PF_OP_RRG) 312 printf(" %s:%s", a1, a2); 313 } 314 315 void 316 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric) 317 { 318 char a1[6], a2[6]; 319 struct servent *s; 320 321 if (!numeric) 322 s = getservbyport(p1, proto); 323 else 324 s = NULL; 325 p1 = ntohs(p1); 326 p2 = ntohs(p2); 327 snprintf(a1, sizeof(a1), "%u", p1); 328 snprintf(a2, sizeof(a2), "%u", p2); 329 printf(" port"); 330 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 331 print_op(op, s->s_name, a2); 332 else 333 print_op(op, a1, a2); 334 } 335 336 void 337 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 338 { 339 char a1[11], a2[11]; 340 341 snprintf(a1, sizeof(a1), "%u", u1); 342 snprintf(a2, sizeof(a2), "%u", u2); 343 printf(" %s", t); 344 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 345 print_op(op, "unknown", a2); 346 else 347 print_op(op, a1, a2); 348 } 349 350 void 351 print_flags(u_int8_t f) 352 { 353 int i; 354 355 for (i = 0; tcpflags[i]; ++i) 356 if (f & (1 << i)) 357 printf("%c", tcpflags[i]); 358 } 359 360 void 361 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 362 sa_family_t af, u_int8_t proto, int verbose, int numeric) 363 { 364 char buf[PF_OSFP_LEN*3]; 365 if (src->addr.type == PF_ADDR_ADDRMASK && 366 dst->addr.type == PF_ADDR_ADDRMASK && 367 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 368 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 369 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 370 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 371 !src->neg && !dst->neg && 372 !src->port_op && !dst->port_op && 373 osfp == PF_OSFP_ANY) 374 printf(" all"); 375 else { 376 printf(" from "); 377 if (src->neg) 378 printf("! "); 379 print_addr(&src->addr, af, verbose); 380 if (src->port_op) 381 print_port(src->port_op, src->port[0], 382 src->port[1], 383 proto == IPPROTO_TCP ? "tcp" : "udp", 384 numeric); 385 if (osfp != PF_OSFP_ANY) 386 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 387 sizeof(buf))); 388 389 printf(" to "); 390 if (dst->neg) 391 printf("! "); 392 print_addr(&dst->addr, af, verbose); 393 if (dst->port_op) 394 print_port(dst->port_op, dst->port[0], 395 dst->port[1], 396 proto == IPPROTO_TCP ? "tcp" : "udp", 397 numeric); 398 } 399 } 400 401 void 402 print_pool(struct pf_pool *pool, u_int16_t p1, u_int16_t p2, 403 sa_family_t af, int id) 404 { 405 struct pf_pooladdr *pooladdr; 406 407 if ((TAILQ_FIRST(&pool->list) != NULL) && 408 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 409 printf("{ "); 410 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 411 switch (id) { 412 case PF_NAT: 413 case PF_RDR: 414 case PF_BINAT: 415 print_addr(&pooladdr->addr, af, 0); 416 break; 417 case PF_PASS: 418 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 419 printf("%s", pooladdr->ifname); 420 else { 421 printf("(%s ", pooladdr->ifname); 422 print_addr(&pooladdr->addr, af, 0); 423 printf(")"); 424 } 425 break; 426 default: 427 break; 428 } 429 if (TAILQ_NEXT(pooladdr, entries) != NULL) 430 printf(", "); 431 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 432 printf(" }"); 433 } 434 switch (id) { 435 case PF_NAT: 436 if ((p1 != PF_NAT_PROXY_PORT_LOW || 437 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 438 if (p1 == p2) 439 printf(" port %u", p1); 440 else 441 printf(" port %u:%u", p1, p2); 442 } 443 break; 444 case PF_RDR: 445 if (p1) { 446 printf(" port %u", p1); 447 if (p2 && (p2 != p1)) 448 printf(":%u", p2); 449 } 450 break; 451 default: 452 break; 453 } 454 switch (pool->opts & PF_POOL_TYPEMASK) { 455 case PF_POOL_NONE: 456 break; 457 case PF_POOL_BITMASK: 458 printf(" bitmask"); 459 break; 460 case PF_POOL_RANDOM: 461 printf(" random"); 462 break; 463 case PF_POOL_SRCHASH: 464 printf(" source-hash 0x%08x%08x%08x%08x", 465 pool->key.key32[0], pool->key.key32[1], 466 pool->key.key32[2], pool->key.key32[3]); 467 break; 468 case PF_POOL_ROUNDROBIN: 469 printf(" round-robin"); 470 break; 471 } 472 if (pool->opts & PF_POOL_STICKYADDR) 473 printf(" sticky-address"); 474 if (id == PF_NAT && p1 == 0 && p2 == 0) 475 printf(" static-port"); 476 } 477 478 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 479 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 480 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 481 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 482 483 void 484 print_status(struct pf_status *s, int opts) 485 { 486 char statline[80], *running; 487 time_t runtime; 488 int i; 489 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 490 static const char hex[] = "0123456789abcdef"; 491 492 runtime = time(NULL) - s->since; 493 running = s->running ? "Enabled" : "Disabled"; 494 495 if (s->since) { 496 unsigned int sec, min, hrs, day = runtime; 497 498 sec = day % 60; 499 day /= 60; 500 min = day % 60; 501 day /= 60; 502 hrs = day % 24; 503 day /= 24; 504 snprintf(statline, sizeof(statline), 505 "Status: %s for %u days %.2u:%.2u:%.2u", 506 running, day, hrs, min, sec); 507 } else 508 snprintf(statline, sizeof(statline), "Status: %s", running); 509 printf("%-44s", statline); 510 switch (s->debug) { 511 case PF_DEBUG_NONE: 512 printf("%15s\n\n", "Debug: None"); 513 break; 514 case PF_DEBUG_URGENT: 515 printf("%15s\n\n", "Debug: Urgent"); 516 break; 517 case PF_DEBUG_MISC: 518 printf("%15s\n\n", "Debug: Misc"); 519 break; 520 case PF_DEBUG_NOISY: 521 printf("%15s\n\n", "Debug: Loud"); 522 break; 523 } 524 525 if (opts & PF_OPT_VERBOSE) { 526 printf("Hostid: 0x%08x\n", ntohl(s->hostid)); 527 528 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 529 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 530 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 531 } 532 buf[i + i] = '\0'; 533 printf("Checksum: 0x%s\n\n", buf); 534 } 535 536 if (s->ifname[0] != 0) { 537 printf("Interface Stats for %-16s %5s %16s\n", 538 s->ifname, "IPv4", "IPv6"); 539 printf(" %-25s %14llu %16llu\n", "Bytes In", 540 (unsigned long long)s->bcounters[0][0], 541 (unsigned long long)s->bcounters[1][0]); 542 printf(" %-25s %14llu %16llu\n", "Bytes Out", 543 (unsigned long long)s->bcounters[0][1], 544 (unsigned long long)s->bcounters[1][1]); 545 printf(" Packets In\n"); 546 printf(" %-23s %14llu %16llu\n", "Passed", 547 (unsigned long long)s->pcounters[0][0][PF_PASS], 548 (unsigned long long)s->pcounters[1][0][PF_PASS]); 549 printf(" %-23s %14llu %16llu\n", "Blocked", 550 (unsigned long long)s->pcounters[0][0][PF_DROP], 551 (unsigned long long)s->pcounters[1][0][PF_DROP]); 552 printf(" Packets Out\n"); 553 printf(" %-23s %14llu %16llu\n", "Passed", 554 (unsigned long long)s->pcounters[0][1][PF_PASS], 555 (unsigned long long)s->pcounters[1][1][PF_PASS]); 556 printf(" %-23s %14llu %16llu\n\n", "Blocked", 557 (unsigned long long)s->pcounters[0][1][PF_DROP], 558 (unsigned long long)s->pcounters[1][1][PF_DROP]); 559 } 560 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 561 printf(" %-25s %14u %14s\n", "current entries", s->states, ""); 562 for (i = 0; i < FCNT_MAX; i++) { 563 printf(" %-25s %14llu ", pf_fcounters[i], 564 (unsigned long long)s->fcounters[i]); 565 if (runtime > 0) 566 printf("%14.1f/s\n", 567 (double)s->fcounters[i] / (double)runtime); 568 else 569 printf("%14s\n", ""); 570 } 571 if (opts & PF_OPT_VERBOSE) { 572 printf("Source Tracking Table\n"); 573 printf(" %-25s %14u %14s\n", "current entries", 574 s->src_nodes, ""); 575 for (i = 0; i < SCNT_MAX; i++) { 576 printf(" %-25s %14lld ", pf_scounters[i], 577 #ifdef __FreeBSD__ 578 (long long)s->scounters[i]); 579 #else 580 s->scounters[i]); 581 #endif 582 if (runtime > 0) 583 printf("%14.1f/s\n", 584 (double)s->scounters[i] / (double)runtime); 585 else 586 printf("%14s\n", ""); 587 } 588 } 589 printf("Counters\n"); 590 for (i = 0; i < PFRES_MAX; i++) { 591 printf(" %-25s %14llu ", pf_reasons[i], 592 (unsigned long long)s->counters[i]); 593 if (runtime > 0) 594 printf("%14.1f/s\n", 595 (double)s->counters[i] / (double)runtime); 596 else 597 printf("%14s\n", ""); 598 } 599 if (opts & PF_OPT_VERBOSE) { 600 printf("Limit Counters\n"); 601 for (i = 0; i < LCNT_MAX; i++) { 602 printf(" %-25s %14lld ", pf_lcounters[i], 603 #ifdef __FreeBSD__ 604 (unsigned long long)s->lcounters[i]); 605 #else 606 s->lcounters[i]); 607 #endif 608 if (runtime > 0) 609 printf("%14.1f/s\n", 610 (double)s->lcounters[i] / (double)runtime); 611 else 612 printf("%14s\n", ""); 613 } 614 } 615 } 616 617 void 618 print_src_node(struct pf_src_node *sn, int opts) 619 { 620 struct pf_addr_wrap aw; 621 int min, sec; 622 623 memset(&aw, 0, sizeof(aw)); 624 if (sn->af == AF_INET) 625 aw.v.a.mask.addr32[0] = 0xffffffff; 626 else 627 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 628 629 aw.v.a.addr = sn->addr; 630 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 631 printf(" -> "); 632 aw.v.a.addr = sn->raddr; 633 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 634 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 635 sn->conn, sn->conn_rate.count / 1000, 636 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 637 if (opts & PF_OPT_VERBOSE) { 638 sec = sn->creation % 60; 639 sn->creation /= 60; 640 min = sn->creation % 60; 641 sn->creation /= 60; 642 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 643 if (sn->states == 0) { 644 sec = sn->expire % 60; 645 sn->expire /= 60; 646 min = sn->expire % 60; 647 sn->expire /= 60; 648 printf(", expires in %.2u:%.2u:%.2u", 649 sn->expire, min, sec); 650 } 651 printf(", %llu pkts, %llu bytes", 652 #ifdef __FreeBSD__ 653 (unsigned long long)(sn->packets[0] + sn->packets[1]), 654 (unsigned long long)(sn->bytes[0] + sn->bytes[1])); 655 #else 656 sn->packets[0] + sn->packets[1], 657 sn->bytes[0] + sn->bytes[1]); 658 #endif 659 switch (sn->ruletype) { 660 case PF_NAT: 661 if (sn->rule.nr != -1) 662 printf(", nat rule %u", sn->rule.nr); 663 break; 664 case PF_RDR: 665 if (sn->rule.nr != -1) 666 printf(", rdr rule %u", sn->rule.nr); 667 break; 668 case PF_PASS: 669 if (sn->rule.nr != -1) 670 printf(", filter rule %u", sn->rule.nr); 671 break; 672 } 673 printf("\n"); 674 } 675 } 676 677 void 678 print_rule(struct pf_rule *r, const char *anchor_call, int verbose, int numeric) 679 { 680 static const char *actiontypes[] = { "pass", "block", "scrub", 681 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" }; 682 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 683 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 684 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 685 int i, opts; 686 687 if (verbose) 688 printf("@%d ", r->nr); 689 if (r->action > PF_NORDR) 690 printf("action(%d)", r->action); 691 else if (anchor_call[0]) { 692 if (anchor_call[0] == '_') { 693 printf("%s", anchortypes[r->action]); 694 } else 695 printf("%s \"%s\"", anchortypes[r->action], 696 anchor_call); 697 } else { 698 printf("%s", actiontypes[r->action]); 699 if (r->natpass) 700 printf(" pass"); 701 } 702 if (r->action == PF_DROP) { 703 if (r->rule_flag & PFRULE_RETURN) 704 printf(" return"); 705 else if (r->rule_flag & PFRULE_RETURNRST) { 706 if (!r->return_ttl) 707 printf(" return-rst"); 708 else 709 printf(" return-rst(ttl %d)", r->return_ttl); 710 } else if (r->rule_flag & PFRULE_RETURNICMP) { 711 const struct icmpcodeent *ic, *ic6; 712 713 ic = geticmpcodebynumber(r->return_icmp >> 8, 714 r->return_icmp & 255, AF_INET); 715 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 716 r->return_icmp6 & 255, AF_INET6); 717 718 switch (r->af) { 719 case AF_INET: 720 printf(" return-icmp"); 721 if (ic == NULL) 722 printf("(%u)", r->return_icmp & 255); 723 else 724 printf("(%s)", ic->name); 725 break; 726 case AF_INET6: 727 printf(" return-icmp6"); 728 if (ic6 == NULL) 729 printf("(%u)", r->return_icmp6 & 255); 730 else 731 printf("(%s)", ic6->name); 732 break; 733 default: 734 printf(" return-icmp"); 735 if (ic == NULL) 736 printf("(%u, ", r->return_icmp & 255); 737 else 738 printf("(%s, ", ic->name); 739 if (ic6 == NULL) 740 printf("%u)", r->return_icmp6 & 255); 741 else 742 printf("%s)", ic6->name); 743 break; 744 } 745 } else 746 printf(" drop"); 747 } 748 if (r->direction == PF_IN) 749 printf(" in"); 750 else if (r->direction == PF_OUT) 751 printf(" out"); 752 if (r->log) { 753 printf(" log"); 754 if (r->log & ~PF_LOG || r->logif) { 755 int count = 0; 756 757 printf(" ("); 758 if (r->log & PF_LOG_ALL) 759 printf("%sall", count++ ? ", " : ""); 760 if (r->log & PF_LOG_SOCKET_LOOKUP) 761 printf("%suser", count++ ? ", " : ""); 762 if (r->logif) 763 printf("%sto pflog%u", count++ ? ", " : "", 764 r->logif); 765 printf(")"); 766 } 767 } 768 if (r->quick) 769 printf(" quick"); 770 if (r->ifname[0]) { 771 if (r->ifnot) 772 printf(" on ! %s", r->ifname); 773 else 774 printf(" on %s", r->ifname); 775 } 776 if (r->rt) { 777 if (r->rt == PF_ROUTETO) 778 printf(" route-to"); 779 else if (r->rt == PF_REPLYTO) 780 printf(" reply-to"); 781 else if (r->rt == PF_DUPTO) 782 printf(" dup-to"); 783 printf(" "); 784 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 785 } 786 if (r->af) { 787 if (r->af == AF_INET) 788 printf(" inet"); 789 else 790 printf(" inet6"); 791 } 792 if (r->proto) { 793 struct protoent *p; 794 795 if ((p = getprotobynumber(r->proto)) != NULL) 796 printf(" proto %s", p->p_name); 797 else 798 printf(" proto %u", r->proto); 799 } 800 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 801 verbose, numeric); 802 if (r->uid.op) 803 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 804 UID_MAX); 805 if (r->gid.op) 806 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 807 GID_MAX); 808 if (r->flags || r->flagset) { 809 printf(" flags "); 810 print_flags(r->flags); 811 printf("/"); 812 print_flags(r->flagset); 813 } else if (r->action == PF_PASS && 814 (!r->proto || r->proto == IPPROTO_TCP) && 815 !(r->rule_flag & PFRULE_FRAGMENT) && 816 !anchor_call[0] && r->keep_state) 817 printf(" flags any"); 818 if (r->type) { 819 const struct icmptypeent *it; 820 821 it = geticmptypebynumber(r->type-1, r->af); 822 if (r->af != AF_INET6) 823 printf(" icmp-type"); 824 else 825 printf(" icmp6-type"); 826 if (it != NULL) 827 printf(" %s", it->name); 828 else 829 printf(" %u", r->type-1); 830 if (r->code) { 831 const struct icmpcodeent *ic; 832 833 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 834 if (ic != NULL) 835 printf(" code %s", ic->name); 836 else 837 printf(" code %u", r->code-1); 838 } 839 } 840 if (r->tos) 841 printf(" tos 0x%2.2x", r->tos); 842 if (r->prio) 843 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 844 if (r->scrub_flags & PFSTATE_SETMASK) { 845 char *comma = ""; 846 printf(" set ("); 847 if (r->scrub_flags & PFSTATE_SETPRIO) { 848 if (r->set_prio[0] == r->set_prio[1]) 849 printf("%s prio %u", comma, r->set_prio[0]); 850 else 851 printf("%s prio(%u, %u)", comma, r->set_prio[0], 852 r->set_prio[1]); 853 comma = ","; 854 } 855 printf(" )"); 856 } 857 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 858 printf(" no state"); 859 else if (r->keep_state == PF_STATE_NORMAL) 860 printf(" keep state"); 861 else if (r->keep_state == PF_STATE_MODULATE) 862 printf(" modulate state"); 863 else if (r->keep_state == PF_STATE_SYNPROXY) 864 printf(" synproxy state"); 865 if (r->prob) { 866 char buf[20]; 867 868 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 869 for (i = strlen(buf)-1; i > 0; i--) { 870 if (buf[i] == '0') 871 buf[i] = '\0'; 872 else { 873 if (buf[i] == '.') 874 buf[i] = '\0'; 875 break; 876 } 877 } 878 printf(" probability %s%%", buf); 879 } 880 opts = 0; 881 if (r->max_states || r->max_src_nodes || r->max_src_states) 882 opts = 1; 883 if (r->rule_flag & PFRULE_NOSYNC) 884 opts = 1; 885 if (r->rule_flag & PFRULE_SRCTRACK) 886 opts = 1; 887 if (r->rule_flag & PFRULE_IFBOUND) 888 opts = 1; 889 if (r->rule_flag & PFRULE_STATESLOPPY) 890 opts = 1; 891 for (i = 0; !opts && i < PFTM_MAX; ++i) 892 if (r->timeout[i]) 893 opts = 1; 894 if (opts) { 895 printf(" ("); 896 if (r->max_states) { 897 printf("max %u", r->max_states); 898 opts = 0; 899 } 900 if (r->rule_flag & PFRULE_NOSYNC) { 901 if (!opts) 902 printf(", "); 903 printf("no-sync"); 904 opts = 0; 905 } 906 if (r->rule_flag & PFRULE_SRCTRACK) { 907 if (!opts) 908 printf(", "); 909 printf("source-track"); 910 if (r->rule_flag & PFRULE_RULESRCTRACK) 911 printf(" rule"); 912 else 913 printf(" global"); 914 opts = 0; 915 } 916 if (r->max_src_states) { 917 if (!opts) 918 printf(", "); 919 printf("max-src-states %u", r->max_src_states); 920 opts = 0; 921 } 922 if (r->max_src_conn) { 923 if (!opts) 924 printf(", "); 925 printf("max-src-conn %u", r->max_src_conn); 926 opts = 0; 927 } 928 if (r->max_src_conn_rate.limit) { 929 if (!opts) 930 printf(", "); 931 printf("max-src-conn-rate %u/%u", 932 r->max_src_conn_rate.limit, 933 r->max_src_conn_rate.seconds); 934 opts = 0; 935 } 936 if (r->max_src_nodes) { 937 if (!opts) 938 printf(", "); 939 printf("max-src-nodes %u", r->max_src_nodes); 940 opts = 0; 941 } 942 if (r->overload_tblname[0]) { 943 if (!opts) 944 printf(", "); 945 printf("overload <%s>", r->overload_tblname); 946 if (r->flush) 947 printf(" flush"); 948 if (r->flush & PF_FLUSH_GLOBAL) 949 printf(" global"); 950 } 951 if (r->rule_flag & PFRULE_IFBOUND) { 952 if (!opts) 953 printf(", "); 954 printf("if-bound"); 955 opts = 0; 956 } 957 if (r->rule_flag & PFRULE_STATESLOPPY) { 958 if (!opts) 959 printf(", "); 960 printf("sloppy"); 961 opts = 0; 962 } 963 for (i = 0; i < PFTM_MAX; ++i) 964 if (r->timeout[i]) { 965 int j; 966 967 if (!opts) 968 printf(", "); 969 opts = 0; 970 for (j = 0; pf_timeouts[j].name != NULL; 971 ++j) 972 if (pf_timeouts[j].timeout == i) 973 break; 974 printf("%s %u", pf_timeouts[j].name == NULL ? 975 "inv.timeout" : pf_timeouts[j].name, 976 r->timeout[i]); 977 } 978 printf(")"); 979 } 980 if (r->rule_flag & PFRULE_FRAGMENT) 981 printf(" fragment"); 982 if (r->rule_flag & PFRULE_NODF) 983 printf(" no-df"); 984 if (r->rule_flag & PFRULE_RANDOMID) 985 printf(" random-id"); 986 if (r->min_ttl) 987 printf(" min-ttl %d", r->min_ttl); 988 if (r->max_mss) 989 printf(" max-mss %d", r->max_mss); 990 if (r->rule_flag & PFRULE_SET_TOS) 991 printf(" set-tos 0x%2.2x", r->set_tos); 992 if (r->allow_opts) 993 printf(" allow-opts"); 994 if (r->action == PF_SCRUB) { 995 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 996 printf(" reassemble tcp"); 997 998 printf(" fragment reassemble"); 999 } 1000 if (r->label[0]) 1001 printf(" label \"%s\"", r->label); 1002 if (r->qname[0] && r->pqname[0]) 1003 printf(" queue(%s, %s)", r->qname, r->pqname); 1004 else if (r->qname[0]) 1005 printf(" queue %s", r->qname); 1006 if (r->tagname[0]) 1007 printf(" tag %s", r->tagname); 1008 if (r->match_tagname[0]) { 1009 if (r->match_tag_not) 1010 printf(" !"); 1011 printf(" tagged %s", r->match_tagname); 1012 } 1013 if (r->rtableid != -1) 1014 printf(" rtable %u", r->rtableid); 1015 if (r->divert.port) { 1016 #ifdef __FreeBSD__ 1017 printf(" divert-to %u", ntohs(r->divert.port)); 1018 #else 1019 if (PF_AZERO(&r->divert.addr, r->af)) { 1020 printf(" divert-reply"); 1021 } else { 1022 /* XXX cut&paste from print_addr */ 1023 char buf[48]; 1024 1025 printf(" divert-to "); 1026 if (inet_ntop(r->af, &r->divert.addr, buf, 1027 sizeof(buf)) == NULL) 1028 printf("?"); 1029 else 1030 printf("%s", buf); 1031 printf(" port %u", ntohs(r->divert.port)); 1032 } 1033 #endif 1034 } 1035 if (!anchor_call[0] && (r->action == PF_NAT || 1036 r->action == PF_BINAT || r->action == PF_RDR)) { 1037 printf(" -> "); 1038 print_pool(&r->rpool, r->rpool.proxy_port[0], 1039 r->rpool.proxy_port[1], r->af, r->action); 1040 } 1041 } 1042 1043 void 1044 print_tabledef(const char *name, int flags, int addrs, 1045 struct node_tinithead *nodes) 1046 { 1047 struct node_tinit *ti, *nti; 1048 struct node_host *h; 1049 1050 printf("table <%s>", name); 1051 if (flags & PFR_TFLAG_CONST) 1052 printf(" const"); 1053 if (flags & PFR_TFLAG_PERSIST) 1054 printf(" persist"); 1055 if (flags & PFR_TFLAG_COUNTERS) 1056 printf(" counters"); 1057 SIMPLEQ_FOREACH(ti, nodes, entries) { 1058 if (ti->file) { 1059 printf(" file \"%s\"", ti->file); 1060 continue; 1061 } 1062 printf(" {"); 1063 for (;;) { 1064 for (h = ti->host; h != NULL; h = h->next) { 1065 printf(h->not ? " !" : " "); 1066 print_addr(&h->addr, h->af, 0); 1067 } 1068 nti = SIMPLEQ_NEXT(ti, entries); 1069 if (nti != NULL && nti->file == NULL) 1070 ti = nti; /* merge lists */ 1071 else 1072 break; 1073 } 1074 printf(" }"); 1075 } 1076 if (addrs && SIMPLEQ_EMPTY(nodes)) 1077 printf(" { }"); 1078 printf("\n"); 1079 } 1080 1081 int 1082 parse_flags(char *s) 1083 { 1084 char *p, *q; 1085 u_int8_t f = 0; 1086 1087 for (p = s; *p; p++) { 1088 if ((q = strchr(tcpflags, *p)) == NULL) 1089 return -1; 1090 else 1091 f |= 1 << (q - tcpflags); 1092 } 1093 return (f ? f : PF_TH_ALL); 1094 } 1095 1096 void 1097 set_ipmask(struct node_host *h, u_int8_t b) 1098 { 1099 struct pf_addr *m, *n; 1100 int i, j = 0; 1101 1102 m = &h->addr.v.a.mask; 1103 memset(m, 0, sizeof(*m)); 1104 1105 while (b >= 32) { 1106 m->addr32[j++] = 0xffffffff; 1107 b -= 32; 1108 } 1109 for (i = 31; i > 31-b; --i) 1110 m->addr32[j] |= (1 << i); 1111 if (b) 1112 m->addr32[j] = htonl(m->addr32[j]); 1113 1114 /* Mask off bits of the address that will never be used. */ 1115 n = &h->addr.v.a.addr; 1116 if (h->addr.type == PF_ADDR_ADDRMASK) 1117 for (i = 0; i < 4; i++) 1118 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1119 } 1120 1121 int 1122 check_netmask(struct node_host *h, sa_family_t af) 1123 { 1124 struct node_host *n = NULL; 1125 struct pf_addr *m; 1126 1127 for (n = h; n != NULL; n = n->next) { 1128 if (h->addr.type == PF_ADDR_TABLE) 1129 continue; 1130 m = &h->addr.v.a.mask; 1131 /* fix up netmask for dynaddr */ 1132 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1133 unmask(m, AF_INET6) > 32) 1134 set_ipmask(n, 32); 1135 /* netmasks > 32 bit are invalid on v4 */ 1136 if (af == AF_INET && 1137 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1138 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1139 unmask(m, AF_INET6)); 1140 return (1); 1141 } 1142 } 1143 return (0); 1144 } 1145 1146 /* interface lookup routines */ 1147 1148 static struct node_host *iftab; 1149 1150 void 1151 ifa_load(void) 1152 { 1153 struct ifaddrs *ifap, *ifa; 1154 struct node_host *n = NULL, *h = NULL; 1155 1156 if (getifaddrs(&ifap) < 0) 1157 err(1, "getifaddrs"); 1158 1159 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1160 if (!(ifa->ifa_addr->sa_family == AF_INET || 1161 ifa->ifa_addr->sa_family == AF_INET6 || 1162 ifa->ifa_addr->sa_family == AF_LINK)) 1163 continue; 1164 n = calloc(1, sizeof(struct node_host)); 1165 if (n == NULL) 1166 err(1, "address: calloc"); 1167 n->af = ifa->ifa_addr->sa_family; 1168 n->ifa_flags = ifa->ifa_flags; 1169 #ifdef __KAME__ 1170 if (n->af == AF_INET6 && 1171 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1172 ifa->ifa_addr)->sin6_addr) && 1173 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1174 0) { 1175 struct sockaddr_in6 *sin6; 1176 1177 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1178 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1179 sin6->sin6_addr.s6_addr[3]; 1180 sin6->sin6_addr.s6_addr[2] = 0; 1181 sin6->sin6_addr.s6_addr[3] = 0; 1182 } 1183 #endif 1184 n->ifindex = 0; 1185 if (n->af == AF_INET) { 1186 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1187 ifa->ifa_addr)->sin_addr.s_addr, 1188 sizeof(struct in_addr)); 1189 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1190 ifa->ifa_netmask)->sin_addr.s_addr, 1191 sizeof(struct in_addr)); 1192 if (ifa->ifa_broadaddr != NULL) 1193 memcpy(&n->bcast, &((struct sockaddr_in *) 1194 ifa->ifa_broadaddr)->sin_addr.s_addr, 1195 sizeof(struct in_addr)); 1196 if (ifa->ifa_dstaddr != NULL) 1197 memcpy(&n->peer, &((struct sockaddr_in *) 1198 ifa->ifa_dstaddr)->sin_addr.s_addr, 1199 sizeof(struct in_addr)); 1200 } else if (n->af == AF_INET6) { 1201 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1202 ifa->ifa_addr)->sin6_addr.s6_addr, 1203 sizeof(struct in6_addr)); 1204 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1205 ifa->ifa_netmask)->sin6_addr.s6_addr, 1206 sizeof(struct in6_addr)); 1207 if (ifa->ifa_broadaddr != NULL) 1208 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1209 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1210 sizeof(struct in6_addr)); 1211 if (ifa->ifa_dstaddr != NULL) 1212 memcpy(&n->peer, &((struct sockaddr_in6 *) 1213 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1214 sizeof(struct in6_addr)); 1215 n->ifindex = ((struct sockaddr_in6 *) 1216 ifa->ifa_addr)->sin6_scope_id; 1217 } 1218 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1219 err(1, "ifa_load: strdup"); 1220 n->next = NULL; 1221 n->tail = n; 1222 if (h == NULL) 1223 h = n; 1224 else { 1225 h->tail->next = n; 1226 h->tail = n; 1227 } 1228 } 1229 1230 iftab = h; 1231 freeifaddrs(ifap); 1232 } 1233 1234 int 1235 get_socket_domain(void) 1236 { 1237 int sdom; 1238 1239 sdom = AF_UNSPEC; 1240 #ifdef WITH_INET6 1241 if (sdom == AF_UNSPEC && feature_present("inet6")) 1242 sdom = AF_INET6; 1243 #endif 1244 #ifdef WITH_INET 1245 if (sdom == AF_UNSPEC && feature_present("inet")) 1246 sdom = AF_INET; 1247 #endif 1248 if (sdom == AF_UNSPEC) 1249 sdom = AF_LINK; 1250 1251 return (sdom); 1252 } 1253 1254 struct node_host * 1255 ifa_exists(const char *ifa_name) 1256 { 1257 struct node_host *n; 1258 struct ifgroupreq ifgr; 1259 int s; 1260 1261 if (iftab == NULL) 1262 ifa_load(); 1263 1264 /* check wether this is a group */ 1265 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1266 err(1, "socket"); 1267 bzero(&ifgr, sizeof(ifgr)); 1268 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1269 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == 0) { 1270 /* fake a node_host */ 1271 if ((n = calloc(1, sizeof(*n))) == NULL) 1272 err(1, "calloc"); 1273 if ((n->ifname = strdup(ifa_name)) == NULL) 1274 err(1, "strdup"); 1275 close(s); 1276 return (n); 1277 } 1278 close(s); 1279 1280 for (n = iftab; n; n = n->next) { 1281 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1282 return (n); 1283 } 1284 1285 return (NULL); 1286 } 1287 1288 struct node_host * 1289 ifa_grouplookup(const char *ifa_name, int flags) 1290 { 1291 struct ifg_req *ifg; 1292 struct ifgroupreq ifgr; 1293 int s, len; 1294 struct node_host *n, *h = NULL; 1295 1296 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1297 err(1, "socket"); 1298 bzero(&ifgr, sizeof(ifgr)); 1299 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1300 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) { 1301 close(s); 1302 return (NULL); 1303 } 1304 1305 len = ifgr.ifgr_len; 1306 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1307 err(1, "calloc"); 1308 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1309 err(1, "SIOCGIFGMEMB"); 1310 1311 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1312 ifg++) { 1313 len -= sizeof(struct ifg_req); 1314 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1315 continue; 1316 if (h == NULL) 1317 h = n; 1318 else { 1319 h->tail->next = n; 1320 h->tail = n->tail; 1321 } 1322 } 1323 free(ifgr.ifgr_groups); 1324 close(s); 1325 1326 return (h); 1327 } 1328 1329 struct node_host * 1330 ifa_lookup(const char *ifa_name, int flags) 1331 { 1332 struct node_host *p = NULL, *h = NULL, *n = NULL; 1333 int got4 = 0, got6 = 0; 1334 const char *last_if = NULL; 1335 1336 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1337 return (h); 1338 1339 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1340 ifa_name = NULL; 1341 1342 if (iftab == NULL) 1343 ifa_load(); 1344 1345 for (p = iftab; p; p = p->next) { 1346 if (ifa_skip_if(ifa_name, p)) 1347 continue; 1348 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1349 continue; 1350 if ((flags & PFI_AFLAG_BROADCAST) && 1351 !(p->ifa_flags & IFF_BROADCAST)) 1352 continue; 1353 if ((flags & PFI_AFLAG_PEER) && 1354 !(p->ifa_flags & IFF_POINTOPOINT)) 1355 continue; 1356 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1357 continue; 1358 if (last_if == NULL || strcmp(last_if, p->ifname)) 1359 got4 = got6 = 0; 1360 last_if = p->ifname; 1361 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1362 continue; 1363 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1364 continue; 1365 if (p->af == AF_INET) 1366 got4 = 1; 1367 else 1368 got6 = 1; 1369 n = calloc(1, sizeof(struct node_host)); 1370 if (n == NULL) 1371 err(1, "address: calloc"); 1372 n->af = p->af; 1373 if (flags & PFI_AFLAG_BROADCAST) 1374 memcpy(&n->addr.v.a.addr, &p->bcast, 1375 sizeof(struct pf_addr)); 1376 else if (flags & PFI_AFLAG_PEER) 1377 memcpy(&n->addr.v.a.addr, &p->peer, 1378 sizeof(struct pf_addr)); 1379 else 1380 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1381 sizeof(struct pf_addr)); 1382 if (flags & PFI_AFLAG_NETWORK) 1383 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1384 else { 1385 if (n->af == AF_INET) { 1386 if (p->ifa_flags & IFF_LOOPBACK && 1387 p->ifa_flags & IFF_LINK1) 1388 memcpy(&n->addr.v.a.mask, 1389 &p->addr.v.a.mask, 1390 sizeof(struct pf_addr)); 1391 else 1392 set_ipmask(n, 32); 1393 } else 1394 set_ipmask(n, 128); 1395 } 1396 n->ifindex = p->ifindex; 1397 1398 n->next = NULL; 1399 n->tail = n; 1400 if (h == NULL) 1401 h = n; 1402 else { 1403 h->tail->next = n; 1404 h->tail = n; 1405 } 1406 } 1407 return (h); 1408 } 1409 1410 int 1411 ifa_skip_if(const char *filter, struct node_host *p) 1412 { 1413 int n; 1414 1415 if (p->af != AF_INET && p->af != AF_INET6) 1416 return (1); 1417 if (filter == NULL || !*filter) 1418 return (0); 1419 if (!strcmp(p->ifname, filter)) 1420 return (0); /* exact match */ 1421 n = strlen(filter); 1422 if (n < 1 || n >= IFNAMSIZ) 1423 return (1); /* sanity check */ 1424 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1425 return (1); /* only do exact match in that case */ 1426 if (strncmp(p->ifname, filter, n)) 1427 return (1); /* prefix doesn't match */ 1428 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1429 } 1430 1431 1432 struct node_host * 1433 host(const char *s) 1434 { 1435 struct node_host *h = NULL; 1436 int mask, v4mask, v6mask, cont = 1; 1437 char *p, *q, *ps; 1438 1439 if ((p = strrchr(s, '/')) != NULL) { 1440 mask = strtol(p+1, &q, 0); 1441 if (!q || *q || mask > 128 || q == (p+1)) { 1442 fprintf(stderr, "invalid netmask '%s'\n", p); 1443 return (NULL); 1444 } 1445 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1446 err(1, "host: malloc"); 1447 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1448 v4mask = v6mask = mask; 1449 } else { 1450 if ((ps = strdup(s)) == NULL) 1451 err(1, "host: strdup"); 1452 v4mask = 32; 1453 v6mask = 128; 1454 mask = -1; 1455 } 1456 1457 /* interface with this name exists? */ 1458 if (cont && (h = host_if(ps, mask)) != NULL) 1459 cont = 0; 1460 1461 /* IPv4 address? */ 1462 if (cont && (h = host_v4(s, mask)) != NULL) 1463 cont = 0; 1464 1465 /* IPv6 address? */ 1466 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1467 cont = 0; 1468 1469 /* dns lookup */ 1470 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1471 cont = 0; 1472 free(ps); 1473 1474 if (h == NULL || cont == 1) { 1475 fprintf(stderr, "no IP address found for %s\n", s); 1476 return (NULL); 1477 } 1478 return (h); 1479 } 1480 1481 struct node_host * 1482 host_if(const char *s, int mask) 1483 { 1484 struct node_host *n, *h = NULL; 1485 char *p, *ps; 1486 int flags = 0; 1487 1488 if ((ps = strdup(s)) == NULL) 1489 err(1, "host_if: strdup"); 1490 while ((p = strrchr(ps, ':')) != NULL) { 1491 if (!strcmp(p+1, "network")) 1492 flags |= PFI_AFLAG_NETWORK; 1493 else if (!strcmp(p+1, "broadcast")) 1494 flags |= PFI_AFLAG_BROADCAST; 1495 else if (!strcmp(p+1, "peer")) 1496 flags |= PFI_AFLAG_PEER; 1497 else if (!strcmp(p+1, "0")) 1498 flags |= PFI_AFLAG_NOALIAS; 1499 else { 1500 free(ps); 1501 return (NULL); 1502 } 1503 *p = '\0'; 1504 } 1505 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1506 fprintf(stderr, "illegal combination of interface modifiers\n"); 1507 free(ps); 1508 return (NULL); 1509 } 1510 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1511 fprintf(stderr, "network or broadcast lookup, but " 1512 "extra netmask given\n"); 1513 free(ps); 1514 return (NULL); 1515 } 1516 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1517 /* interface with this name exists */ 1518 h = ifa_lookup(ps, flags); 1519 for (n = h; n != NULL && mask > -1; n = n->next) 1520 set_ipmask(n, mask); 1521 } 1522 1523 free(ps); 1524 return (h); 1525 } 1526 1527 struct node_host * 1528 host_v4(const char *s, int mask) 1529 { 1530 struct node_host *h = NULL; 1531 struct in_addr ina; 1532 int bits = 32; 1533 1534 memset(&ina, 0, sizeof(struct in_addr)); 1535 if (strrchr(s, '/') != NULL) { 1536 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1537 return (NULL); 1538 } else { 1539 if (inet_pton(AF_INET, s, &ina) != 1) 1540 return (NULL); 1541 } 1542 1543 h = calloc(1, sizeof(struct node_host)); 1544 if (h == NULL) 1545 err(1, "address: calloc"); 1546 h->ifname = NULL; 1547 h->af = AF_INET; 1548 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1549 set_ipmask(h, bits); 1550 h->next = NULL; 1551 h->tail = h; 1552 1553 return (h); 1554 } 1555 1556 struct node_host * 1557 host_v6(const char *s, int mask) 1558 { 1559 struct addrinfo hints, *res; 1560 struct node_host *h = NULL; 1561 1562 memset(&hints, 0, sizeof(hints)); 1563 hints.ai_family = AF_INET6; 1564 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1565 hints.ai_flags = AI_NUMERICHOST; 1566 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1567 h = calloc(1, sizeof(struct node_host)); 1568 if (h == NULL) 1569 err(1, "address: calloc"); 1570 h->ifname = NULL; 1571 h->af = AF_INET6; 1572 memcpy(&h->addr.v.a.addr, 1573 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1574 sizeof(h->addr.v.a.addr)); 1575 h->ifindex = 1576 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1577 set_ipmask(h, mask); 1578 freeaddrinfo(res); 1579 h->next = NULL; 1580 h->tail = h; 1581 } 1582 1583 return (h); 1584 } 1585 1586 struct node_host * 1587 host_dns(const char *s, int v4mask, int v6mask) 1588 { 1589 struct addrinfo hints, *res0, *res; 1590 struct node_host *n, *h = NULL; 1591 int error, noalias = 0; 1592 int got4 = 0, got6 = 0; 1593 char *p, *ps; 1594 1595 if ((ps = strdup(s)) == NULL) 1596 err(1, "host_dns: strdup"); 1597 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1598 noalias = 1; 1599 *p = '\0'; 1600 } 1601 memset(&hints, 0, sizeof(hints)); 1602 hints.ai_family = PF_UNSPEC; 1603 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1604 error = getaddrinfo(ps, NULL, &hints, &res0); 1605 if (error) { 1606 free(ps); 1607 return (h); 1608 } 1609 1610 for (res = res0; res; res = res->ai_next) { 1611 if (res->ai_family != AF_INET && 1612 res->ai_family != AF_INET6) 1613 continue; 1614 if (noalias) { 1615 if (res->ai_family == AF_INET) { 1616 if (got4) 1617 continue; 1618 got4 = 1; 1619 } else { 1620 if (got6) 1621 continue; 1622 got6 = 1; 1623 } 1624 } 1625 n = calloc(1, sizeof(struct node_host)); 1626 if (n == NULL) 1627 err(1, "host_dns: calloc"); 1628 n->ifname = NULL; 1629 n->af = res->ai_family; 1630 if (res->ai_family == AF_INET) { 1631 memcpy(&n->addr.v.a.addr, 1632 &((struct sockaddr_in *) 1633 res->ai_addr)->sin_addr.s_addr, 1634 sizeof(struct in_addr)); 1635 set_ipmask(n, v4mask); 1636 } else { 1637 memcpy(&n->addr.v.a.addr, 1638 &((struct sockaddr_in6 *) 1639 res->ai_addr)->sin6_addr.s6_addr, 1640 sizeof(struct in6_addr)); 1641 n->ifindex = 1642 ((struct sockaddr_in6 *) 1643 res->ai_addr)->sin6_scope_id; 1644 set_ipmask(n, v6mask); 1645 } 1646 n->next = NULL; 1647 n->tail = n; 1648 if (h == NULL) 1649 h = n; 1650 else { 1651 h->tail->next = n; 1652 h->tail = n; 1653 } 1654 } 1655 freeaddrinfo(res0); 1656 free(ps); 1657 1658 return (h); 1659 } 1660 1661 /* 1662 * convert a hostname to a list of addresses and put them in the given buffer. 1663 * test: 1664 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1665 */ 1666 int 1667 append_addr(struct pfr_buffer *b, char *s, int test) 1668 { 1669 char *r; 1670 struct node_host *h, *n; 1671 int rv, not = 0; 1672 1673 for (r = s; *r == '!'; r++) 1674 not = !not; 1675 if ((n = host(r)) == NULL) { 1676 errno = 0; 1677 return (-1); 1678 } 1679 rv = append_addr_host(b, n, test, not); 1680 do { 1681 h = n; 1682 n = n->next; 1683 free(h); 1684 } while (n != NULL); 1685 return (rv); 1686 } 1687 1688 /* 1689 * same as previous function, but with a pre-parsed input and the ability 1690 * to "negate" the result. Does not free the node_host list. 1691 * not: 1692 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1693 */ 1694 int 1695 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1696 { 1697 int bits; 1698 struct pfr_addr addr; 1699 1700 do { 1701 bzero(&addr, sizeof(addr)); 1702 addr.pfra_not = n->not ^ not; 1703 addr.pfra_af = n->af; 1704 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1705 switch (n->af) { 1706 case AF_INET: 1707 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1708 bits = 32; 1709 break; 1710 case AF_INET6: 1711 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1712 sizeof(struct in6_addr)); 1713 bits = 128; 1714 break; 1715 default: 1716 errno = EINVAL; 1717 return (-1); 1718 } 1719 if ((test && (not || addr.pfra_net != bits)) || 1720 addr.pfra_net > bits) { 1721 errno = EINVAL; 1722 return (-1); 1723 } 1724 if (pfr_buf_add(b, &addr)) 1725 return (-1); 1726 } while ((n = n->next) != NULL); 1727 1728 return (0); 1729 } 1730 1731 int 1732 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1733 { 1734 struct pfioc_trans_e trans; 1735 1736 bzero(&trans, sizeof(trans)); 1737 trans.rs_num = rs_num; 1738 if (strlcpy(trans.anchor, anchor, 1739 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1740 errx(1, "pfctl_add_trans: strlcpy"); 1741 1742 return pfr_buf_add(buf, &trans); 1743 } 1744 1745 u_int32_t 1746 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1747 { 1748 struct pfioc_trans_e *p; 1749 1750 PFRB_FOREACH(p, buf) 1751 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1752 return (p->ticket); 1753 errx(1, "pfctl_get_ticket: assertion failed"); 1754 } 1755 1756 int 1757 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1758 { 1759 struct pfioc_trans trans; 1760 1761 bzero(&trans, sizeof(trans)); 1762 trans.size = buf->pfrb_size - from; 1763 trans.esize = sizeof(struct pfioc_trans_e); 1764 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1765 return ioctl(dev, cmd, &trans); 1766 } 1767