1 /* $OpenBSD: pfctl_parser.c,v 1.240 2008/06/10 20:55:02 mcbride Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Daniel Hartmeier 5 * Copyright (c) 2002,2003 Henning Brauer 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * - Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * - Redistributions in binary form must reproduce the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer in the documentation and/or other materials provided 17 * with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include <sys/types.h> 38 #include <sys/ioctl.h> 39 #include <sys/socket.h> 40 #include <sys/param.h> 41 #include <sys/proc.h> 42 #include <net/if.h> 43 #include <netinet/in.h> 44 #include <netinet/in_systm.h> 45 #include <netinet/ip.h> 46 #include <netinet/ip_icmp.h> 47 #include <netinet/icmp6.h> 48 #include <net/pfvar.h> 49 #include <arpa/inet.h> 50 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <ctype.h> 55 #include <netdb.h> 56 #include <stdarg.h> 57 #include <errno.h> 58 #include <err.h> 59 #include <ifaddrs.h> 60 #include <unistd.h> 61 62 #include "pfctl_parser.h" 63 #include "pfctl.h" 64 65 void print_op (u_int8_t, const char *, const char *); 66 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int); 67 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned); 68 void print_flags (u_int8_t); 69 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 70 struct pf_rule_addr *, u_int8_t, u_int8_t, int, int); 71 int ifa_skip_if(const char *filter, struct node_host *p); 72 73 struct node_host *ifa_grouplookup(const char *, int); 74 struct node_host *host_if(const char *, int); 75 struct node_host *host_v4(const char *, int); 76 struct node_host *host_v6(const char *, int); 77 struct node_host *host_dns(const char *, int, int); 78 79 const char * const tcpflags = "FSRPAUEW"; 80 81 static const struct icmptypeent icmp_type[] = { 82 { "echoreq", ICMP_ECHO }, 83 { "echorep", ICMP_ECHOREPLY }, 84 { "unreach", ICMP_UNREACH }, 85 { "squench", ICMP_SOURCEQUENCH }, 86 { "redir", ICMP_REDIRECT }, 87 { "althost", ICMP_ALTHOSTADDR }, 88 { "routeradv", ICMP_ROUTERADVERT }, 89 { "routersol", ICMP_ROUTERSOLICIT }, 90 { "timex", ICMP_TIMXCEED }, 91 { "paramprob", ICMP_PARAMPROB }, 92 { "timereq", ICMP_TSTAMP }, 93 { "timerep", ICMP_TSTAMPREPLY }, 94 { "inforeq", ICMP_IREQ }, 95 { "inforep", ICMP_IREQREPLY }, 96 { "maskreq", ICMP_MASKREQ }, 97 { "maskrep", ICMP_MASKREPLY }, 98 { "trace", ICMP_TRACEROUTE }, 99 { "dataconv", ICMP_DATACONVERR }, 100 { "mobredir", ICMP_MOBILE_REDIRECT }, 101 { "ipv6-where", ICMP_IPV6_WHEREAREYOU }, 102 { "ipv6-here", ICMP_IPV6_IAMHERE }, 103 { "mobregreq", ICMP_MOBILE_REGREQUEST }, 104 { "mobregrep", ICMP_MOBILE_REGREPLY }, 105 { "skip", ICMP_SKIP }, 106 { "photuris", ICMP_PHOTURIS } 107 }; 108 109 static const struct icmptypeent icmp6_type[] = { 110 { "unreach", ICMP6_DST_UNREACH }, 111 { "toobig", ICMP6_PACKET_TOO_BIG }, 112 { "timex", ICMP6_TIME_EXCEEDED }, 113 { "paramprob", ICMP6_PARAM_PROB }, 114 { "echoreq", ICMP6_ECHO_REQUEST }, 115 { "echorep", ICMP6_ECHO_REPLY }, 116 { "groupqry", ICMP6_MEMBERSHIP_QUERY }, 117 { "listqry", MLD_LISTENER_QUERY }, 118 { "grouprep", ICMP6_MEMBERSHIP_REPORT }, 119 { "listenrep", MLD_LISTENER_REPORT }, 120 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION }, 121 { "listendone", MLD_LISTENER_DONE }, 122 { "routersol", ND_ROUTER_SOLICIT }, 123 { "routeradv", ND_ROUTER_ADVERT }, 124 { "neighbrsol", ND_NEIGHBOR_SOLICIT }, 125 { "neighbradv", ND_NEIGHBOR_ADVERT }, 126 { "redir", ND_REDIRECT }, 127 { "routrrenum", ICMP6_ROUTER_RENUMBERING }, 128 { "wrureq", ICMP6_WRUREQUEST }, 129 { "wrurep", ICMP6_WRUREPLY }, 130 { "fqdnreq", ICMP6_FQDN_QUERY }, 131 { "fqdnrep", ICMP6_FQDN_REPLY }, 132 { "niqry", ICMP6_NI_QUERY }, 133 { "nirep", ICMP6_NI_REPLY }, 134 { "mtraceresp", MLD_MTRACE_RESP }, 135 { "mtrace", MLD_MTRACE } 136 }; 137 138 static const struct icmpcodeent icmp_code[] = { 139 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET }, 140 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST }, 141 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL }, 142 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT }, 143 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG }, 144 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL }, 145 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN }, 146 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN }, 147 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED }, 148 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB }, 149 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB }, 150 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET }, 151 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST }, 152 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB }, 153 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE }, 154 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF }, 155 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET }, 156 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST }, 157 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET }, 158 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST }, 159 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL }, 160 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON }, 161 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS }, 162 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS }, 163 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR }, 164 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT }, 165 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH }, 166 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX }, 167 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED }, 168 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED } 169 }; 170 171 static const struct icmpcodeent icmp6_code[] = { 172 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN }, 173 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE }, 174 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR }, 175 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE }, 176 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR }, 177 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT }, 178 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT }, 179 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY }, 180 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER }, 181 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER }, 182 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK }, 183 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER } 184 }; 185 186 const struct pf_timeout pf_timeouts[] = { 187 { "tcp.first", PFTM_TCP_FIRST_PACKET }, 188 { "tcp.opening", PFTM_TCP_OPENING }, 189 { "tcp.established", PFTM_TCP_ESTABLISHED }, 190 { "tcp.closing", PFTM_TCP_CLOSING }, 191 { "tcp.finwait", PFTM_TCP_FIN_WAIT }, 192 { "tcp.closed", PFTM_TCP_CLOSED }, 193 { "tcp.tsdiff", PFTM_TS_DIFF }, 194 { "udp.first", PFTM_UDP_FIRST_PACKET }, 195 { "udp.single", PFTM_UDP_SINGLE }, 196 { "udp.multiple", PFTM_UDP_MULTIPLE }, 197 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 198 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 199 { "other.first", PFTM_OTHER_FIRST_PACKET }, 200 { "other.single", PFTM_OTHER_SINGLE }, 201 { "other.multiple", PFTM_OTHER_MULTIPLE }, 202 { "frag", PFTM_FRAG }, 203 { "interval", PFTM_INTERVAL }, 204 { "adaptive.start", PFTM_ADAPTIVE_START }, 205 { "adaptive.end", PFTM_ADAPTIVE_END }, 206 { "src.track", PFTM_SRC_NODE }, 207 { NULL, 0 } 208 }; 209 210 const struct icmptypeent * 211 geticmptypebynumber(u_int8_t type, sa_family_t af) 212 { 213 unsigned int i; 214 215 if (af != AF_INET6) { 216 for (i=0; i < nitems(icmp_type); i++) { 217 if (type == icmp_type[i].type) 218 return (&icmp_type[i]); 219 } 220 } else { 221 for (i=0; i < nitems(icmp6_type); i++) { 222 if (type == icmp6_type[i].type) 223 return (&icmp6_type[i]); 224 } 225 } 226 return (NULL); 227 } 228 229 const struct icmptypeent * 230 geticmptypebyname(char *w, sa_family_t af) 231 { 232 unsigned int i; 233 234 if (af != AF_INET6) { 235 for (i=0; i < nitems(icmp_type); i++) { 236 if (!strcmp(w, icmp_type[i].name)) 237 return (&icmp_type[i]); 238 } 239 } else { 240 for (i=0; i < nitems(icmp6_type); i++) { 241 if (!strcmp(w, icmp6_type[i].name)) 242 return (&icmp6_type[i]); 243 } 244 } 245 return (NULL); 246 } 247 248 const struct icmpcodeent * 249 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 250 { 251 unsigned int i; 252 253 if (af != AF_INET6) { 254 for (i=0; i < nitems(icmp_code); i++) { 255 if (type == icmp_code[i].type && 256 code == icmp_code[i].code) 257 return (&icmp_code[i]); 258 } 259 } else { 260 for (i=0; i < nitems(icmp6_code); i++) { 261 if (type == icmp6_code[i].type && 262 code == icmp6_code[i].code) 263 return (&icmp6_code[i]); 264 } 265 } 266 return (NULL); 267 } 268 269 const struct icmpcodeent * 270 geticmpcodebyname(u_long type, char *w, sa_family_t af) 271 { 272 unsigned int i; 273 274 if (af != AF_INET6) { 275 for (i=0; i < nitems(icmp_code); i++) { 276 if (type == icmp_code[i].type && 277 !strcmp(w, icmp_code[i].name)) 278 return (&icmp_code[i]); 279 } 280 } else { 281 for (i=0; i < nitems(icmp6_code); i++) { 282 if (type == icmp6_code[i].type && 283 !strcmp(w, icmp6_code[i].name)) 284 return (&icmp6_code[i]); 285 } 286 } 287 return (NULL); 288 } 289 290 void 291 print_op(u_int8_t op, const char *a1, const char *a2) 292 { 293 if (op == PF_OP_IRG) 294 printf(" %s >< %s", a1, a2); 295 else if (op == PF_OP_XRG) 296 printf(" %s <> %s", a1, a2); 297 else if (op == PF_OP_EQ) 298 printf(" = %s", a1); 299 else if (op == PF_OP_NE) 300 printf(" != %s", a1); 301 else if (op == PF_OP_LT) 302 printf(" < %s", a1); 303 else if (op == PF_OP_LE) 304 printf(" <= %s", a1); 305 else if (op == PF_OP_GT) 306 printf(" > %s", a1); 307 else if (op == PF_OP_GE) 308 printf(" >= %s", a1); 309 else if (op == PF_OP_RRG) 310 printf(" %s:%s", a1, a2); 311 } 312 313 void 314 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric) 315 { 316 char a1[6], a2[6]; 317 struct servent *s; 318 319 if (!numeric) 320 s = getservbyport(p1, proto); 321 else 322 s = NULL; 323 p1 = ntohs(p1); 324 p2 = ntohs(p2); 325 snprintf(a1, sizeof(a1), "%u", p1); 326 snprintf(a2, sizeof(a2), "%u", p2); 327 printf(" port"); 328 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 329 print_op(op, s->s_name, a2); 330 else 331 print_op(op, a1, a2); 332 } 333 334 void 335 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 336 { 337 char a1[11], a2[11]; 338 339 snprintf(a1, sizeof(a1), "%u", u1); 340 snprintf(a2, sizeof(a2), "%u", u2); 341 printf(" %s", t); 342 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 343 print_op(op, "unknown", a2); 344 else 345 print_op(op, a1, a2); 346 } 347 348 void 349 print_flags(u_int8_t f) 350 { 351 int i; 352 353 for (i = 0; tcpflags[i]; ++i) 354 if (f & (1 << i)) 355 printf("%c", tcpflags[i]); 356 } 357 358 void 359 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 360 sa_family_t af, u_int8_t proto, int verbose, int numeric) 361 { 362 char buf[PF_OSFP_LEN*3]; 363 if (src->addr.type == PF_ADDR_ADDRMASK && 364 dst->addr.type == PF_ADDR_ADDRMASK && 365 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 366 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 367 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 368 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 369 !src->neg && !dst->neg && 370 !src->port_op && !dst->port_op && 371 osfp == PF_OSFP_ANY) 372 printf(" all"); 373 else { 374 printf(" from "); 375 if (src->neg) 376 printf("! "); 377 print_addr(&src->addr, af, verbose); 378 if (src->port_op) 379 print_port(src->port_op, src->port[0], 380 src->port[1], 381 proto == IPPROTO_TCP ? "tcp" : "udp", 382 numeric); 383 if (osfp != PF_OSFP_ANY) 384 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 385 sizeof(buf))); 386 387 printf(" to "); 388 if (dst->neg) 389 printf("! "); 390 print_addr(&dst->addr, af, verbose); 391 if (dst->port_op) 392 print_port(dst->port_op, dst->port[0], 393 dst->port[1], 394 proto == IPPROTO_TCP ? "tcp" : "udp", 395 numeric); 396 } 397 } 398 399 void 400 print_pool(struct pf_pool *pool, u_int16_t p1, u_int16_t p2, 401 sa_family_t af, int id) 402 { 403 struct pf_pooladdr *pooladdr; 404 405 if ((TAILQ_FIRST(&pool->list) != NULL) && 406 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 407 printf("{ "); 408 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 409 switch (id) { 410 case PF_NAT: 411 case PF_RDR: 412 case PF_BINAT: 413 print_addr(&pooladdr->addr, af, 0); 414 break; 415 case PF_PASS: 416 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 417 printf("%s", pooladdr->ifname); 418 else { 419 printf("(%s ", pooladdr->ifname); 420 print_addr(&pooladdr->addr, af, 0); 421 printf(")"); 422 } 423 break; 424 default: 425 break; 426 } 427 if (TAILQ_NEXT(pooladdr, entries) != NULL) 428 printf(", "); 429 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 430 printf(" }"); 431 } 432 switch (id) { 433 case PF_NAT: 434 if ((p1 != PF_NAT_PROXY_PORT_LOW || 435 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 436 if (p1 == p2) 437 printf(" port %u", p1); 438 else 439 printf(" port %u:%u", p1, p2); 440 } 441 break; 442 case PF_RDR: 443 if (p1) { 444 printf(" port %u", p1); 445 if (p2 && (p2 != p1)) 446 printf(":%u", p2); 447 } 448 break; 449 default: 450 break; 451 } 452 switch (pool->opts & PF_POOL_TYPEMASK) { 453 case PF_POOL_NONE: 454 break; 455 case PF_POOL_BITMASK: 456 printf(" bitmask"); 457 break; 458 case PF_POOL_RANDOM: 459 printf(" random"); 460 break; 461 case PF_POOL_SRCHASH: 462 printf(" source-hash 0x%08x%08x%08x%08x", 463 pool->key.key32[0], pool->key.key32[1], 464 pool->key.key32[2], pool->key.key32[3]); 465 break; 466 case PF_POOL_ROUNDROBIN: 467 printf(" round-robin"); 468 break; 469 } 470 if (pool->opts & PF_POOL_STICKYADDR) 471 printf(" sticky-address"); 472 if (id == PF_NAT && p1 == 0 && p2 == 0) 473 printf(" static-port"); 474 } 475 476 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 477 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 478 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 479 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 480 481 void 482 print_status(struct pf_status *s, int opts) 483 { 484 char statline[80], *running; 485 time_t runtime; 486 int i; 487 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 488 static const char hex[] = "0123456789abcdef"; 489 490 runtime = time(NULL) - s->since; 491 running = s->running ? "Enabled" : "Disabled"; 492 493 if (s->since) { 494 unsigned int sec, min, hrs, day = runtime; 495 496 sec = day % 60; 497 day /= 60; 498 min = day % 60; 499 day /= 60; 500 hrs = day % 24; 501 day /= 24; 502 snprintf(statline, sizeof(statline), 503 "Status: %s for %u days %.2u:%.2u:%.2u", 504 running, day, hrs, min, sec); 505 } else 506 snprintf(statline, sizeof(statline), "Status: %s", running); 507 printf("%-44s", statline); 508 switch (s->debug) { 509 case PF_DEBUG_NONE: 510 printf("%15s\n\n", "Debug: None"); 511 break; 512 case PF_DEBUG_URGENT: 513 printf("%15s\n\n", "Debug: Urgent"); 514 break; 515 case PF_DEBUG_MISC: 516 printf("%15s\n\n", "Debug: Misc"); 517 break; 518 case PF_DEBUG_NOISY: 519 printf("%15s\n\n", "Debug: Loud"); 520 break; 521 } 522 523 if (opts & PF_OPT_VERBOSE) { 524 printf("Hostid: 0x%08x\n", ntohl(s->hostid)); 525 526 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 527 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 528 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 529 } 530 buf[i + i] = '\0'; 531 printf("Checksum: 0x%s\n\n", buf); 532 } 533 534 if (s->ifname[0] != 0) { 535 printf("Interface Stats for %-16s %5s %16s\n", 536 s->ifname, "IPv4", "IPv6"); 537 printf(" %-25s %14llu %16llu\n", "Bytes In", 538 (unsigned long long)s->bcounters[0][0], 539 (unsigned long long)s->bcounters[1][0]); 540 printf(" %-25s %14llu %16llu\n", "Bytes Out", 541 (unsigned long long)s->bcounters[0][1], 542 (unsigned long long)s->bcounters[1][1]); 543 printf(" Packets In\n"); 544 printf(" %-23s %14llu %16llu\n", "Passed", 545 (unsigned long long)s->pcounters[0][0][PF_PASS], 546 (unsigned long long)s->pcounters[1][0][PF_PASS]); 547 printf(" %-23s %14llu %16llu\n", "Blocked", 548 (unsigned long long)s->pcounters[0][0][PF_DROP], 549 (unsigned long long)s->pcounters[1][0][PF_DROP]); 550 printf(" Packets Out\n"); 551 printf(" %-23s %14llu %16llu\n", "Passed", 552 (unsigned long long)s->pcounters[0][1][PF_PASS], 553 (unsigned long long)s->pcounters[1][1][PF_PASS]); 554 printf(" %-23s %14llu %16llu\n\n", "Blocked", 555 (unsigned long long)s->pcounters[0][1][PF_DROP], 556 (unsigned long long)s->pcounters[1][1][PF_DROP]); 557 } 558 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 559 printf(" %-25s %14u %14s\n", "current entries", s->states, ""); 560 for (i = 0; i < FCNT_MAX; i++) { 561 printf(" %-25s %14llu ", pf_fcounters[i], 562 (unsigned long long)s->fcounters[i]); 563 if (runtime > 0) 564 printf("%14.1f/s\n", 565 (double)s->fcounters[i] / (double)runtime); 566 else 567 printf("%14s\n", ""); 568 } 569 if (opts & PF_OPT_VERBOSE) { 570 printf("Source Tracking Table\n"); 571 printf(" %-25s %14u %14s\n", "current entries", 572 s->src_nodes, ""); 573 for (i = 0; i < SCNT_MAX; i++) { 574 printf(" %-25s %14lld ", pf_scounters[i], 575 #ifdef __FreeBSD__ 576 (long long)s->scounters[i]); 577 #else 578 s->scounters[i]); 579 #endif 580 if (runtime > 0) 581 printf("%14.1f/s\n", 582 (double)s->scounters[i] / (double)runtime); 583 else 584 printf("%14s\n", ""); 585 } 586 } 587 printf("Counters\n"); 588 for (i = 0; i < PFRES_MAX; i++) { 589 printf(" %-25s %14llu ", pf_reasons[i], 590 (unsigned long long)s->counters[i]); 591 if (runtime > 0) 592 printf("%14.1f/s\n", 593 (double)s->counters[i] / (double)runtime); 594 else 595 printf("%14s\n", ""); 596 } 597 if (opts & PF_OPT_VERBOSE) { 598 printf("Limit Counters\n"); 599 for (i = 0; i < LCNT_MAX; i++) { 600 printf(" %-25s %14lld ", pf_lcounters[i], 601 #ifdef __FreeBSD__ 602 (unsigned long long)s->lcounters[i]); 603 #else 604 s->lcounters[i]); 605 #endif 606 if (runtime > 0) 607 printf("%14.1f/s\n", 608 (double)s->lcounters[i] / (double)runtime); 609 else 610 printf("%14s\n", ""); 611 } 612 } 613 } 614 615 void 616 print_src_node(struct pf_src_node *sn, int opts) 617 { 618 struct pf_addr_wrap aw; 619 int min, sec; 620 621 memset(&aw, 0, sizeof(aw)); 622 if (sn->af == AF_INET) 623 aw.v.a.mask.addr32[0] = 0xffffffff; 624 else 625 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 626 627 aw.v.a.addr = sn->addr; 628 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 629 printf(" -> "); 630 aw.v.a.addr = sn->raddr; 631 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 632 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 633 sn->conn, sn->conn_rate.count / 1000, 634 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 635 if (opts & PF_OPT_VERBOSE) { 636 sec = sn->creation % 60; 637 sn->creation /= 60; 638 min = sn->creation % 60; 639 sn->creation /= 60; 640 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 641 if (sn->states == 0) { 642 sec = sn->expire % 60; 643 sn->expire /= 60; 644 min = sn->expire % 60; 645 sn->expire /= 60; 646 printf(", expires in %.2u:%.2u:%.2u", 647 sn->expire, min, sec); 648 } 649 printf(", %llu pkts, %llu bytes", 650 #ifdef __FreeBSD__ 651 (unsigned long long)(sn->packets[0] + sn->packets[1]), 652 (unsigned long long)(sn->bytes[0] + sn->bytes[1])); 653 #else 654 sn->packets[0] + sn->packets[1], 655 sn->bytes[0] + sn->bytes[1]); 656 #endif 657 switch (sn->ruletype) { 658 case PF_NAT: 659 if (sn->rule.nr != -1) 660 printf(", nat rule %u", sn->rule.nr); 661 break; 662 case PF_RDR: 663 if (sn->rule.nr != -1) 664 printf(", rdr rule %u", sn->rule.nr); 665 break; 666 case PF_PASS: 667 if (sn->rule.nr != -1) 668 printf(", filter rule %u", sn->rule.nr); 669 break; 670 } 671 printf("\n"); 672 } 673 } 674 675 void 676 print_rule(struct pf_rule *r, const char *anchor_call, int verbose, int numeric) 677 { 678 static const char *actiontypes[] = { "pass", "block", "scrub", 679 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" }; 680 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 681 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 682 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 683 int i, opts; 684 685 if (verbose) 686 printf("@%d ", r->nr); 687 if (r->action > PF_NORDR) 688 printf("action(%d)", r->action); 689 else if (anchor_call[0]) { 690 if (anchor_call[0] == '_') { 691 printf("%s", anchortypes[r->action]); 692 } else 693 printf("%s \"%s\"", anchortypes[r->action], 694 anchor_call); 695 } else { 696 printf("%s", actiontypes[r->action]); 697 if (r->natpass) 698 printf(" pass"); 699 } 700 if (r->action == PF_DROP) { 701 if (r->rule_flag & PFRULE_RETURN) 702 printf(" return"); 703 else if (r->rule_flag & PFRULE_RETURNRST) { 704 if (!r->return_ttl) 705 printf(" return-rst"); 706 else 707 printf(" return-rst(ttl %d)", r->return_ttl); 708 } else if (r->rule_flag & PFRULE_RETURNICMP) { 709 const struct icmpcodeent *ic, *ic6; 710 711 ic = geticmpcodebynumber(r->return_icmp >> 8, 712 r->return_icmp & 255, AF_INET); 713 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 714 r->return_icmp6 & 255, AF_INET6); 715 716 switch (r->af) { 717 case AF_INET: 718 printf(" return-icmp"); 719 if (ic == NULL) 720 printf("(%u)", r->return_icmp & 255); 721 else 722 printf("(%s)", ic->name); 723 break; 724 case AF_INET6: 725 printf(" return-icmp6"); 726 if (ic6 == NULL) 727 printf("(%u)", r->return_icmp6 & 255); 728 else 729 printf("(%s)", ic6->name); 730 break; 731 default: 732 printf(" return-icmp"); 733 if (ic == NULL) 734 printf("(%u, ", r->return_icmp & 255); 735 else 736 printf("(%s, ", ic->name); 737 if (ic6 == NULL) 738 printf("%u)", r->return_icmp6 & 255); 739 else 740 printf("%s)", ic6->name); 741 break; 742 } 743 } else 744 printf(" drop"); 745 } 746 if (r->direction == PF_IN) 747 printf(" in"); 748 else if (r->direction == PF_OUT) 749 printf(" out"); 750 if (r->log) { 751 printf(" log"); 752 if (r->log & ~PF_LOG || r->logif) { 753 int count = 0; 754 755 printf(" ("); 756 if (r->log & PF_LOG_ALL) 757 printf("%sall", count++ ? ", " : ""); 758 if (r->log & PF_LOG_SOCKET_LOOKUP) 759 printf("%suser", count++ ? ", " : ""); 760 if (r->logif) 761 printf("%sto pflog%u", count++ ? ", " : "", 762 r->logif); 763 printf(")"); 764 } 765 } 766 if (r->quick) 767 printf(" quick"); 768 if (r->ifname[0]) { 769 if (r->ifnot) 770 printf(" on ! %s", r->ifname); 771 else 772 printf(" on %s", r->ifname); 773 } 774 if (r->rt) { 775 if (r->rt == PF_ROUTETO) 776 printf(" route-to"); 777 else if (r->rt == PF_REPLYTO) 778 printf(" reply-to"); 779 else if (r->rt == PF_DUPTO) 780 printf(" dup-to"); 781 else if (r->rt == PF_FASTROUTE) 782 printf(" fastroute"); 783 if (r->rt != PF_FASTROUTE) { 784 printf(" "); 785 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 786 } 787 } 788 if (r->af) { 789 if (r->af == AF_INET) 790 printf(" inet"); 791 else 792 printf(" inet6"); 793 } 794 if (r->proto) { 795 struct protoent *p; 796 797 if ((p = getprotobynumber(r->proto)) != NULL) 798 printf(" proto %s", p->p_name); 799 else 800 printf(" proto %u", r->proto); 801 } 802 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 803 verbose, numeric); 804 if (r->uid.op) 805 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 806 UID_MAX); 807 if (r->gid.op) 808 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 809 GID_MAX); 810 if (r->flags || r->flagset) { 811 printf(" flags "); 812 print_flags(r->flags); 813 printf("/"); 814 print_flags(r->flagset); 815 } else if (r->action == PF_PASS && 816 (!r->proto || r->proto == IPPROTO_TCP) && 817 !(r->rule_flag & PFRULE_FRAGMENT) && 818 !anchor_call[0] && r->keep_state) 819 printf(" flags any"); 820 if (r->type) { 821 const struct icmptypeent *it; 822 823 it = geticmptypebynumber(r->type-1, r->af); 824 if (r->af != AF_INET6) 825 printf(" icmp-type"); 826 else 827 printf(" icmp6-type"); 828 if (it != NULL) 829 printf(" %s", it->name); 830 else 831 printf(" %u", r->type-1); 832 if (r->code) { 833 const struct icmpcodeent *ic; 834 835 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 836 if (ic != NULL) 837 printf(" code %s", ic->name); 838 else 839 printf(" code %u", r->code-1); 840 } 841 } 842 if (r->tos) 843 printf(" tos 0x%2.2x", r->tos); 844 if (r->prio) 845 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 846 if (r->scrub_flags & PFSTATE_SETMASK) { 847 char *comma = ""; 848 printf(" set ("); 849 if (r->scrub_flags & PFSTATE_SETPRIO) { 850 if (r->set_prio[0] == r->set_prio[1]) 851 printf("%s prio %u", comma, r->set_prio[0]); 852 else 853 printf("%s prio(%u, %u)", comma, r->set_prio[0], 854 r->set_prio[1]); 855 comma = ","; 856 } 857 printf(" )"); 858 } 859 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 860 printf(" no state"); 861 else if (r->keep_state == PF_STATE_NORMAL) 862 printf(" keep state"); 863 else if (r->keep_state == PF_STATE_MODULATE) 864 printf(" modulate state"); 865 else if (r->keep_state == PF_STATE_SYNPROXY) 866 printf(" synproxy state"); 867 if (r->prob) { 868 char buf[20]; 869 870 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 871 for (i = strlen(buf)-1; i > 0; i--) { 872 if (buf[i] == '0') 873 buf[i] = '\0'; 874 else { 875 if (buf[i] == '.') 876 buf[i] = '\0'; 877 break; 878 } 879 } 880 printf(" probability %s%%", buf); 881 } 882 opts = 0; 883 if (r->max_states || r->max_src_nodes || r->max_src_states) 884 opts = 1; 885 if (r->rule_flag & PFRULE_NOSYNC) 886 opts = 1; 887 if (r->rule_flag & PFRULE_SRCTRACK) 888 opts = 1; 889 if (r->rule_flag & PFRULE_IFBOUND) 890 opts = 1; 891 if (r->rule_flag & PFRULE_STATESLOPPY) 892 opts = 1; 893 for (i = 0; !opts && i < PFTM_MAX; ++i) 894 if (r->timeout[i]) 895 opts = 1; 896 if (opts) { 897 printf(" ("); 898 if (r->max_states) { 899 printf("max %u", r->max_states); 900 opts = 0; 901 } 902 if (r->rule_flag & PFRULE_NOSYNC) { 903 if (!opts) 904 printf(", "); 905 printf("no-sync"); 906 opts = 0; 907 } 908 if (r->rule_flag & PFRULE_SRCTRACK) { 909 if (!opts) 910 printf(", "); 911 printf("source-track"); 912 if (r->rule_flag & PFRULE_RULESRCTRACK) 913 printf(" rule"); 914 else 915 printf(" global"); 916 opts = 0; 917 } 918 if (r->max_src_states) { 919 if (!opts) 920 printf(", "); 921 printf("max-src-states %u", r->max_src_states); 922 opts = 0; 923 } 924 if (r->max_src_conn) { 925 if (!opts) 926 printf(", "); 927 printf("max-src-conn %u", r->max_src_conn); 928 opts = 0; 929 } 930 if (r->max_src_conn_rate.limit) { 931 if (!opts) 932 printf(", "); 933 printf("max-src-conn-rate %u/%u", 934 r->max_src_conn_rate.limit, 935 r->max_src_conn_rate.seconds); 936 opts = 0; 937 } 938 if (r->max_src_nodes) { 939 if (!opts) 940 printf(", "); 941 printf("max-src-nodes %u", r->max_src_nodes); 942 opts = 0; 943 } 944 if (r->overload_tblname[0]) { 945 if (!opts) 946 printf(", "); 947 printf("overload <%s>", r->overload_tblname); 948 if (r->flush) 949 printf(" flush"); 950 if (r->flush & PF_FLUSH_GLOBAL) 951 printf(" global"); 952 } 953 if (r->rule_flag & PFRULE_IFBOUND) { 954 if (!opts) 955 printf(", "); 956 printf("if-bound"); 957 opts = 0; 958 } 959 if (r->rule_flag & PFRULE_STATESLOPPY) { 960 if (!opts) 961 printf(", "); 962 printf("sloppy"); 963 opts = 0; 964 } 965 for (i = 0; i < PFTM_MAX; ++i) 966 if (r->timeout[i]) { 967 int j; 968 969 if (!opts) 970 printf(", "); 971 opts = 0; 972 for (j = 0; pf_timeouts[j].name != NULL; 973 ++j) 974 if (pf_timeouts[j].timeout == i) 975 break; 976 printf("%s %u", pf_timeouts[j].name == NULL ? 977 "inv.timeout" : pf_timeouts[j].name, 978 r->timeout[i]); 979 } 980 printf(")"); 981 } 982 if (r->rule_flag & PFRULE_FRAGMENT) 983 printf(" fragment"); 984 if (r->rule_flag & PFRULE_NODF) 985 printf(" no-df"); 986 if (r->rule_flag & PFRULE_RANDOMID) 987 printf(" random-id"); 988 if (r->min_ttl) 989 printf(" min-ttl %d", r->min_ttl); 990 if (r->max_mss) 991 printf(" max-mss %d", r->max_mss); 992 if (r->rule_flag & PFRULE_SET_TOS) 993 printf(" set-tos 0x%2.2x", r->set_tos); 994 if (r->allow_opts) 995 printf(" allow-opts"); 996 if (r->action == PF_SCRUB) { 997 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 998 printf(" reassemble tcp"); 999 1000 printf(" fragment reassemble"); 1001 } 1002 if (r->label[0]) 1003 printf(" label \"%s\"", r->label); 1004 if (r->qname[0] && r->pqname[0]) 1005 printf(" queue(%s, %s)", r->qname, r->pqname); 1006 else if (r->qname[0]) 1007 printf(" queue %s", r->qname); 1008 if (r->tagname[0]) 1009 printf(" tag %s", r->tagname); 1010 if (r->match_tagname[0]) { 1011 if (r->match_tag_not) 1012 printf(" !"); 1013 printf(" tagged %s", r->match_tagname); 1014 } 1015 if (r->rtableid != -1) 1016 printf(" rtable %u", r->rtableid); 1017 if (r->divert.port) { 1018 #ifdef __FreeBSD__ 1019 printf(" divert-to %u", ntohs(r->divert.port)); 1020 #else 1021 if (PF_AZERO(&r->divert.addr, r->af)) { 1022 printf(" divert-reply"); 1023 } else { 1024 /* XXX cut&paste from print_addr */ 1025 char buf[48]; 1026 1027 printf(" divert-to "); 1028 if (inet_ntop(r->af, &r->divert.addr, buf, 1029 sizeof(buf)) == NULL) 1030 printf("?"); 1031 else 1032 printf("%s", buf); 1033 printf(" port %u", ntohs(r->divert.port)); 1034 } 1035 #endif 1036 } 1037 if (!anchor_call[0] && (r->action == PF_NAT || 1038 r->action == PF_BINAT || r->action == PF_RDR)) { 1039 printf(" -> "); 1040 print_pool(&r->rpool, r->rpool.proxy_port[0], 1041 r->rpool.proxy_port[1], r->af, r->action); 1042 } 1043 } 1044 1045 void 1046 print_tabledef(const char *name, int flags, int addrs, 1047 struct node_tinithead *nodes) 1048 { 1049 struct node_tinit *ti, *nti; 1050 struct node_host *h; 1051 1052 printf("table <%s>", name); 1053 if (flags & PFR_TFLAG_CONST) 1054 printf(" const"); 1055 if (flags & PFR_TFLAG_PERSIST) 1056 printf(" persist"); 1057 if (flags & PFR_TFLAG_COUNTERS) 1058 printf(" counters"); 1059 SIMPLEQ_FOREACH(ti, nodes, entries) { 1060 if (ti->file) { 1061 printf(" file \"%s\"", ti->file); 1062 continue; 1063 } 1064 printf(" {"); 1065 for (;;) { 1066 for (h = ti->host; h != NULL; h = h->next) { 1067 printf(h->not ? " !" : " "); 1068 print_addr(&h->addr, h->af, 0); 1069 } 1070 nti = SIMPLEQ_NEXT(ti, entries); 1071 if (nti != NULL && nti->file == NULL) 1072 ti = nti; /* merge lists */ 1073 else 1074 break; 1075 } 1076 printf(" }"); 1077 } 1078 if (addrs && SIMPLEQ_EMPTY(nodes)) 1079 printf(" { }"); 1080 printf("\n"); 1081 } 1082 1083 int 1084 parse_flags(char *s) 1085 { 1086 char *p, *q; 1087 u_int8_t f = 0; 1088 1089 for (p = s; *p; p++) { 1090 if ((q = strchr(tcpflags, *p)) == NULL) 1091 return -1; 1092 else 1093 f |= 1 << (q - tcpflags); 1094 } 1095 return (f ? f : PF_TH_ALL); 1096 } 1097 1098 void 1099 set_ipmask(struct node_host *h, u_int8_t b) 1100 { 1101 struct pf_addr *m, *n; 1102 int i, j = 0; 1103 1104 m = &h->addr.v.a.mask; 1105 memset(m, 0, sizeof(*m)); 1106 1107 while (b >= 32) { 1108 m->addr32[j++] = 0xffffffff; 1109 b -= 32; 1110 } 1111 for (i = 31; i > 31-b; --i) 1112 m->addr32[j] |= (1 << i); 1113 if (b) 1114 m->addr32[j] = htonl(m->addr32[j]); 1115 1116 /* Mask off bits of the address that will never be used. */ 1117 n = &h->addr.v.a.addr; 1118 if (h->addr.type == PF_ADDR_ADDRMASK) 1119 for (i = 0; i < 4; i++) 1120 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1121 } 1122 1123 int 1124 check_netmask(struct node_host *h, sa_family_t af) 1125 { 1126 struct node_host *n = NULL; 1127 struct pf_addr *m; 1128 1129 for (n = h; n != NULL; n = n->next) { 1130 if (h->addr.type == PF_ADDR_TABLE) 1131 continue; 1132 m = &h->addr.v.a.mask; 1133 /* fix up netmask for dynaddr */ 1134 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1135 unmask(m, AF_INET6) > 32) 1136 set_ipmask(n, 32); 1137 /* netmasks > 32 bit are invalid on v4 */ 1138 if (af == AF_INET && 1139 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1140 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1141 unmask(m, AF_INET6)); 1142 return (1); 1143 } 1144 } 1145 return (0); 1146 } 1147 1148 /* interface lookup routines */ 1149 1150 static struct node_host *iftab; 1151 1152 void 1153 ifa_load(void) 1154 { 1155 struct ifaddrs *ifap, *ifa; 1156 struct node_host *n = NULL, *h = NULL; 1157 1158 if (getifaddrs(&ifap) < 0) 1159 err(1, "getifaddrs"); 1160 1161 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1162 if (!(ifa->ifa_addr->sa_family == AF_INET || 1163 ifa->ifa_addr->sa_family == AF_INET6 || 1164 ifa->ifa_addr->sa_family == AF_LINK)) 1165 continue; 1166 n = calloc(1, sizeof(struct node_host)); 1167 if (n == NULL) 1168 err(1, "address: calloc"); 1169 n->af = ifa->ifa_addr->sa_family; 1170 n->ifa_flags = ifa->ifa_flags; 1171 #ifdef __KAME__ 1172 if (n->af == AF_INET6 && 1173 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1174 ifa->ifa_addr)->sin6_addr) && 1175 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1176 0) { 1177 struct sockaddr_in6 *sin6; 1178 1179 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1180 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1181 sin6->sin6_addr.s6_addr[3]; 1182 sin6->sin6_addr.s6_addr[2] = 0; 1183 sin6->sin6_addr.s6_addr[3] = 0; 1184 } 1185 #endif 1186 n->ifindex = 0; 1187 if (n->af == AF_INET) { 1188 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1189 ifa->ifa_addr)->sin_addr.s_addr, 1190 sizeof(struct in_addr)); 1191 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1192 ifa->ifa_netmask)->sin_addr.s_addr, 1193 sizeof(struct in_addr)); 1194 if (ifa->ifa_broadaddr != NULL) 1195 memcpy(&n->bcast, &((struct sockaddr_in *) 1196 ifa->ifa_broadaddr)->sin_addr.s_addr, 1197 sizeof(struct in_addr)); 1198 if (ifa->ifa_dstaddr != NULL) 1199 memcpy(&n->peer, &((struct sockaddr_in *) 1200 ifa->ifa_dstaddr)->sin_addr.s_addr, 1201 sizeof(struct in_addr)); 1202 } else if (n->af == AF_INET6) { 1203 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1204 ifa->ifa_addr)->sin6_addr.s6_addr, 1205 sizeof(struct in6_addr)); 1206 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1207 ifa->ifa_netmask)->sin6_addr.s6_addr, 1208 sizeof(struct in6_addr)); 1209 if (ifa->ifa_broadaddr != NULL) 1210 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1211 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1212 sizeof(struct in6_addr)); 1213 if (ifa->ifa_dstaddr != NULL) 1214 memcpy(&n->peer, &((struct sockaddr_in6 *) 1215 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1216 sizeof(struct in6_addr)); 1217 n->ifindex = ((struct sockaddr_in6 *) 1218 ifa->ifa_addr)->sin6_scope_id; 1219 } 1220 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1221 err(1, "ifa_load: strdup"); 1222 n->next = NULL; 1223 n->tail = n; 1224 if (h == NULL) 1225 h = n; 1226 else { 1227 h->tail->next = n; 1228 h->tail = n; 1229 } 1230 } 1231 1232 iftab = h; 1233 freeifaddrs(ifap); 1234 } 1235 1236 int 1237 get_socket_domain(void) 1238 { 1239 int sdom; 1240 1241 sdom = AF_UNSPEC; 1242 #ifdef WITH_INET6 1243 if (sdom == AF_UNSPEC && feature_present("inet6")) 1244 sdom = AF_INET6; 1245 #endif 1246 #ifdef WITH_INET 1247 if (sdom == AF_UNSPEC && feature_present("inet")) 1248 sdom = AF_INET; 1249 #endif 1250 if (sdom == AF_UNSPEC) 1251 sdom = AF_LINK; 1252 1253 return (sdom); 1254 } 1255 1256 struct node_host * 1257 ifa_exists(const char *ifa_name) 1258 { 1259 struct node_host *n; 1260 struct ifgroupreq ifgr; 1261 int s; 1262 1263 if (iftab == NULL) 1264 ifa_load(); 1265 1266 /* check wether this is a group */ 1267 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1268 err(1, "socket"); 1269 bzero(&ifgr, sizeof(ifgr)); 1270 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1271 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == 0) { 1272 /* fake a node_host */ 1273 if ((n = calloc(1, sizeof(*n))) == NULL) 1274 err(1, "calloc"); 1275 if ((n->ifname = strdup(ifa_name)) == NULL) 1276 err(1, "strdup"); 1277 close(s); 1278 return (n); 1279 } 1280 close(s); 1281 1282 for (n = iftab; n; n = n->next) { 1283 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1284 return (n); 1285 } 1286 1287 return (NULL); 1288 } 1289 1290 struct node_host * 1291 ifa_grouplookup(const char *ifa_name, int flags) 1292 { 1293 struct ifg_req *ifg; 1294 struct ifgroupreq ifgr; 1295 int s, len; 1296 struct node_host *n, *h = NULL; 1297 1298 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1299 err(1, "socket"); 1300 bzero(&ifgr, sizeof(ifgr)); 1301 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1302 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) { 1303 close(s); 1304 return (NULL); 1305 } 1306 1307 len = ifgr.ifgr_len; 1308 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1309 err(1, "calloc"); 1310 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1311 err(1, "SIOCGIFGMEMB"); 1312 1313 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1314 ifg++) { 1315 len -= sizeof(struct ifg_req); 1316 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1317 continue; 1318 if (h == NULL) 1319 h = n; 1320 else { 1321 h->tail->next = n; 1322 h->tail = n->tail; 1323 } 1324 } 1325 free(ifgr.ifgr_groups); 1326 close(s); 1327 1328 return (h); 1329 } 1330 1331 struct node_host * 1332 ifa_lookup(const char *ifa_name, int flags) 1333 { 1334 struct node_host *p = NULL, *h = NULL, *n = NULL; 1335 int got4 = 0, got6 = 0; 1336 const char *last_if = NULL; 1337 1338 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1339 return (h); 1340 1341 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1342 ifa_name = NULL; 1343 1344 if (iftab == NULL) 1345 ifa_load(); 1346 1347 for (p = iftab; p; p = p->next) { 1348 if (ifa_skip_if(ifa_name, p)) 1349 continue; 1350 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1351 continue; 1352 if ((flags & PFI_AFLAG_BROADCAST) && 1353 !(p->ifa_flags & IFF_BROADCAST)) 1354 continue; 1355 if ((flags & PFI_AFLAG_PEER) && 1356 !(p->ifa_flags & IFF_POINTOPOINT)) 1357 continue; 1358 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1359 continue; 1360 if (last_if == NULL || strcmp(last_if, p->ifname)) 1361 got4 = got6 = 0; 1362 last_if = p->ifname; 1363 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1364 continue; 1365 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1366 continue; 1367 if (p->af == AF_INET) 1368 got4 = 1; 1369 else 1370 got6 = 1; 1371 n = calloc(1, sizeof(struct node_host)); 1372 if (n == NULL) 1373 err(1, "address: calloc"); 1374 n->af = p->af; 1375 if (flags & PFI_AFLAG_BROADCAST) 1376 memcpy(&n->addr.v.a.addr, &p->bcast, 1377 sizeof(struct pf_addr)); 1378 else if (flags & PFI_AFLAG_PEER) 1379 memcpy(&n->addr.v.a.addr, &p->peer, 1380 sizeof(struct pf_addr)); 1381 else 1382 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1383 sizeof(struct pf_addr)); 1384 if (flags & PFI_AFLAG_NETWORK) 1385 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1386 else { 1387 if (n->af == AF_INET) { 1388 if (p->ifa_flags & IFF_LOOPBACK && 1389 p->ifa_flags & IFF_LINK1) 1390 memcpy(&n->addr.v.a.mask, 1391 &p->addr.v.a.mask, 1392 sizeof(struct pf_addr)); 1393 else 1394 set_ipmask(n, 32); 1395 } else 1396 set_ipmask(n, 128); 1397 } 1398 n->ifindex = p->ifindex; 1399 1400 n->next = NULL; 1401 n->tail = n; 1402 if (h == NULL) 1403 h = n; 1404 else { 1405 h->tail->next = n; 1406 h->tail = n; 1407 } 1408 } 1409 return (h); 1410 } 1411 1412 int 1413 ifa_skip_if(const char *filter, struct node_host *p) 1414 { 1415 int n; 1416 1417 if (p->af != AF_INET && p->af != AF_INET6) 1418 return (1); 1419 if (filter == NULL || !*filter) 1420 return (0); 1421 if (!strcmp(p->ifname, filter)) 1422 return (0); /* exact match */ 1423 n = strlen(filter); 1424 if (n < 1 || n >= IFNAMSIZ) 1425 return (1); /* sanity check */ 1426 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1427 return (1); /* only do exact match in that case */ 1428 if (strncmp(p->ifname, filter, n)) 1429 return (1); /* prefix doesn't match */ 1430 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1431 } 1432 1433 1434 struct node_host * 1435 host(const char *s) 1436 { 1437 struct node_host *h = NULL; 1438 int mask, v4mask, v6mask, cont = 1; 1439 char *p, *q, *ps; 1440 1441 if ((p = strrchr(s, '/')) != NULL) { 1442 mask = strtol(p+1, &q, 0); 1443 if (!q || *q || mask > 128 || q == (p+1)) { 1444 fprintf(stderr, "invalid netmask '%s'\n", p); 1445 return (NULL); 1446 } 1447 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1448 err(1, "host: malloc"); 1449 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1450 v4mask = v6mask = mask; 1451 } else { 1452 if ((ps = strdup(s)) == NULL) 1453 err(1, "host: strdup"); 1454 v4mask = 32; 1455 v6mask = 128; 1456 mask = -1; 1457 } 1458 1459 /* interface with this name exists? */ 1460 if (cont && (h = host_if(ps, mask)) != NULL) 1461 cont = 0; 1462 1463 /* IPv4 address? */ 1464 if (cont && (h = host_v4(s, mask)) != NULL) 1465 cont = 0; 1466 1467 /* IPv6 address? */ 1468 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1469 cont = 0; 1470 1471 /* dns lookup */ 1472 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1473 cont = 0; 1474 free(ps); 1475 1476 if (h == NULL || cont == 1) { 1477 fprintf(stderr, "no IP address found for %s\n", s); 1478 return (NULL); 1479 } 1480 return (h); 1481 } 1482 1483 struct node_host * 1484 host_if(const char *s, int mask) 1485 { 1486 struct node_host *n, *h = NULL; 1487 char *p, *ps; 1488 int flags = 0; 1489 1490 if ((ps = strdup(s)) == NULL) 1491 err(1, "host_if: strdup"); 1492 while ((p = strrchr(ps, ':')) != NULL) { 1493 if (!strcmp(p+1, "network")) 1494 flags |= PFI_AFLAG_NETWORK; 1495 else if (!strcmp(p+1, "broadcast")) 1496 flags |= PFI_AFLAG_BROADCAST; 1497 else if (!strcmp(p+1, "peer")) 1498 flags |= PFI_AFLAG_PEER; 1499 else if (!strcmp(p+1, "0")) 1500 flags |= PFI_AFLAG_NOALIAS; 1501 else { 1502 free(ps); 1503 return (NULL); 1504 } 1505 *p = '\0'; 1506 } 1507 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1508 fprintf(stderr, "illegal combination of interface modifiers\n"); 1509 free(ps); 1510 return (NULL); 1511 } 1512 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1513 fprintf(stderr, "network or broadcast lookup, but " 1514 "extra netmask given\n"); 1515 free(ps); 1516 return (NULL); 1517 } 1518 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1519 /* interface with this name exists */ 1520 h = ifa_lookup(ps, flags); 1521 for (n = h; n != NULL && mask > -1; n = n->next) 1522 set_ipmask(n, mask); 1523 } 1524 1525 free(ps); 1526 return (h); 1527 } 1528 1529 struct node_host * 1530 host_v4(const char *s, int mask) 1531 { 1532 struct node_host *h = NULL; 1533 struct in_addr ina; 1534 int bits = 32; 1535 1536 memset(&ina, 0, sizeof(struct in_addr)); 1537 if (strrchr(s, '/') != NULL) { 1538 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1539 return (NULL); 1540 } else { 1541 if (inet_pton(AF_INET, s, &ina) != 1) 1542 return (NULL); 1543 } 1544 1545 h = calloc(1, sizeof(struct node_host)); 1546 if (h == NULL) 1547 err(1, "address: calloc"); 1548 h->ifname = NULL; 1549 h->af = AF_INET; 1550 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1551 set_ipmask(h, bits); 1552 h->next = NULL; 1553 h->tail = h; 1554 1555 return (h); 1556 } 1557 1558 struct node_host * 1559 host_v6(const char *s, int mask) 1560 { 1561 struct addrinfo hints, *res; 1562 struct node_host *h = NULL; 1563 1564 memset(&hints, 0, sizeof(hints)); 1565 hints.ai_family = AF_INET6; 1566 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1567 hints.ai_flags = AI_NUMERICHOST; 1568 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1569 h = calloc(1, sizeof(struct node_host)); 1570 if (h == NULL) 1571 err(1, "address: calloc"); 1572 h->ifname = NULL; 1573 h->af = AF_INET6; 1574 memcpy(&h->addr.v.a.addr, 1575 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1576 sizeof(h->addr.v.a.addr)); 1577 h->ifindex = 1578 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1579 set_ipmask(h, mask); 1580 freeaddrinfo(res); 1581 h->next = NULL; 1582 h->tail = h; 1583 } 1584 1585 return (h); 1586 } 1587 1588 struct node_host * 1589 host_dns(const char *s, int v4mask, int v6mask) 1590 { 1591 struct addrinfo hints, *res0, *res; 1592 struct node_host *n, *h = NULL; 1593 int error, noalias = 0; 1594 int got4 = 0, got6 = 0; 1595 char *p, *ps; 1596 1597 if ((ps = strdup(s)) == NULL) 1598 err(1, "host_dns: strdup"); 1599 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1600 noalias = 1; 1601 *p = '\0'; 1602 } 1603 memset(&hints, 0, sizeof(hints)); 1604 hints.ai_family = PF_UNSPEC; 1605 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1606 error = getaddrinfo(ps, NULL, &hints, &res0); 1607 if (error) { 1608 free(ps); 1609 return (h); 1610 } 1611 1612 for (res = res0; res; res = res->ai_next) { 1613 if (res->ai_family != AF_INET && 1614 res->ai_family != AF_INET6) 1615 continue; 1616 if (noalias) { 1617 if (res->ai_family == AF_INET) { 1618 if (got4) 1619 continue; 1620 got4 = 1; 1621 } else { 1622 if (got6) 1623 continue; 1624 got6 = 1; 1625 } 1626 } 1627 n = calloc(1, sizeof(struct node_host)); 1628 if (n == NULL) 1629 err(1, "host_dns: calloc"); 1630 n->ifname = NULL; 1631 n->af = res->ai_family; 1632 if (res->ai_family == AF_INET) { 1633 memcpy(&n->addr.v.a.addr, 1634 &((struct sockaddr_in *) 1635 res->ai_addr)->sin_addr.s_addr, 1636 sizeof(struct in_addr)); 1637 set_ipmask(n, v4mask); 1638 } else { 1639 memcpy(&n->addr.v.a.addr, 1640 &((struct sockaddr_in6 *) 1641 res->ai_addr)->sin6_addr.s6_addr, 1642 sizeof(struct in6_addr)); 1643 n->ifindex = 1644 ((struct sockaddr_in6 *) 1645 res->ai_addr)->sin6_scope_id; 1646 set_ipmask(n, v6mask); 1647 } 1648 n->next = NULL; 1649 n->tail = n; 1650 if (h == NULL) 1651 h = n; 1652 else { 1653 h->tail->next = n; 1654 h->tail = n; 1655 } 1656 } 1657 freeaddrinfo(res0); 1658 free(ps); 1659 1660 return (h); 1661 } 1662 1663 /* 1664 * convert a hostname to a list of addresses and put them in the given buffer. 1665 * test: 1666 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1667 */ 1668 int 1669 append_addr(struct pfr_buffer *b, char *s, int test) 1670 { 1671 char *r; 1672 struct node_host *h, *n; 1673 int rv, not = 0; 1674 1675 for (r = s; *r == '!'; r++) 1676 not = !not; 1677 if ((n = host(r)) == NULL) { 1678 errno = 0; 1679 return (-1); 1680 } 1681 rv = append_addr_host(b, n, test, not); 1682 do { 1683 h = n; 1684 n = n->next; 1685 free(h); 1686 } while (n != NULL); 1687 return (rv); 1688 } 1689 1690 /* 1691 * same as previous function, but with a pre-parsed input and the ability 1692 * to "negate" the result. Does not free the node_host list. 1693 * not: 1694 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1695 */ 1696 int 1697 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1698 { 1699 int bits; 1700 struct pfr_addr addr; 1701 1702 do { 1703 bzero(&addr, sizeof(addr)); 1704 addr.pfra_not = n->not ^ not; 1705 addr.pfra_af = n->af; 1706 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1707 switch (n->af) { 1708 case AF_INET: 1709 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1710 bits = 32; 1711 break; 1712 case AF_INET6: 1713 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1714 sizeof(struct in6_addr)); 1715 bits = 128; 1716 break; 1717 default: 1718 errno = EINVAL; 1719 return (-1); 1720 } 1721 if ((test && (not || addr.pfra_net != bits)) || 1722 addr.pfra_net > bits) { 1723 errno = EINVAL; 1724 return (-1); 1725 } 1726 if (pfr_buf_add(b, &addr)) 1727 return (-1); 1728 } while ((n = n->next) != NULL); 1729 1730 return (0); 1731 } 1732 1733 int 1734 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1735 { 1736 struct pfioc_trans_e trans; 1737 1738 bzero(&trans, sizeof(trans)); 1739 trans.rs_num = rs_num; 1740 if (strlcpy(trans.anchor, anchor, 1741 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1742 errx(1, "pfctl_add_trans: strlcpy"); 1743 1744 return pfr_buf_add(buf, &trans); 1745 } 1746 1747 u_int32_t 1748 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1749 { 1750 struct pfioc_trans_e *p; 1751 1752 PFRB_FOREACH(p, buf) 1753 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1754 return (p->ticket); 1755 errx(1, "pfctl_get_ticket: assertion failed"); 1756 } 1757 1758 int 1759 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1760 { 1761 struct pfioc_trans trans; 1762 1763 bzero(&trans, sizeof(trans)); 1764 trans.size = buf->pfrb_size - from; 1765 trans.esize = sizeof(struct pfioc_trans_e); 1766 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1767 return ioctl(dev, cmd, &trans); 1768 } 1769