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 printf(" "); 782 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 783 } 784 if (r->af) { 785 if (r->af == AF_INET) 786 printf(" inet"); 787 else 788 printf(" inet6"); 789 } 790 if (r->proto) { 791 struct protoent *p; 792 793 if ((p = getprotobynumber(r->proto)) != NULL) 794 printf(" proto %s", p->p_name); 795 else 796 printf(" proto %u", r->proto); 797 } 798 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 799 verbose, numeric); 800 if (r->uid.op) 801 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 802 UID_MAX); 803 if (r->gid.op) 804 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 805 GID_MAX); 806 if (r->flags || r->flagset) { 807 printf(" flags "); 808 print_flags(r->flags); 809 printf("/"); 810 print_flags(r->flagset); 811 } else if (r->action == PF_PASS && 812 (!r->proto || r->proto == IPPROTO_TCP) && 813 !(r->rule_flag & PFRULE_FRAGMENT) && 814 !anchor_call[0] && r->keep_state) 815 printf(" flags any"); 816 if (r->type) { 817 const struct icmptypeent *it; 818 819 it = geticmptypebynumber(r->type-1, r->af); 820 if (r->af != AF_INET6) 821 printf(" icmp-type"); 822 else 823 printf(" icmp6-type"); 824 if (it != NULL) 825 printf(" %s", it->name); 826 else 827 printf(" %u", r->type-1); 828 if (r->code) { 829 const struct icmpcodeent *ic; 830 831 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 832 if (ic != NULL) 833 printf(" code %s", ic->name); 834 else 835 printf(" code %u", r->code-1); 836 } 837 } 838 if (r->tos) 839 printf(" tos 0x%2.2x", r->tos); 840 if (r->prio) 841 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 842 if (r->scrub_flags & PFSTATE_SETMASK) { 843 char *comma = ""; 844 printf(" set ("); 845 if (r->scrub_flags & PFSTATE_SETPRIO) { 846 if (r->set_prio[0] == r->set_prio[1]) 847 printf("%s prio %u", comma, r->set_prio[0]); 848 else 849 printf("%s prio(%u, %u)", comma, r->set_prio[0], 850 r->set_prio[1]); 851 comma = ","; 852 } 853 printf(" )"); 854 } 855 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 856 printf(" no state"); 857 else if (r->keep_state == PF_STATE_NORMAL) 858 printf(" keep state"); 859 else if (r->keep_state == PF_STATE_MODULATE) 860 printf(" modulate state"); 861 else if (r->keep_state == PF_STATE_SYNPROXY) 862 printf(" synproxy state"); 863 if (r->prob) { 864 char buf[20]; 865 866 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 867 for (i = strlen(buf)-1; i > 0; i--) { 868 if (buf[i] == '0') 869 buf[i] = '\0'; 870 else { 871 if (buf[i] == '.') 872 buf[i] = '\0'; 873 break; 874 } 875 } 876 printf(" probability %s%%", buf); 877 } 878 opts = 0; 879 if (r->max_states || r->max_src_nodes || r->max_src_states) 880 opts = 1; 881 if (r->rule_flag & PFRULE_NOSYNC) 882 opts = 1; 883 if (r->rule_flag & PFRULE_SRCTRACK) 884 opts = 1; 885 if (r->rule_flag & PFRULE_IFBOUND) 886 opts = 1; 887 if (r->rule_flag & PFRULE_STATESLOPPY) 888 opts = 1; 889 for (i = 0; !opts && i < PFTM_MAX; ++i) 890 if (r->timeout[i]) 891 opts = 1; 892 if (opts) { 893 printf(" ("); 894 if (r->max_states) { 895 printf("max %u", r->max_states); 896 opts = 0; 897 } 898 if (r->rule_flag & PFRULE_NOSYNC) { 899 if (!opts) 900 printf(", "); 901 printf("no-sync"); 902 opts = 0; 903 } 904 if (r->rule_flag & PFRULE_SRCTRACK) { 905 if (!opts) 906 printf(", "); 907 printf("source-track"); 908 if (r->rule_flag & PFRULE_RULESRCTRACK) 909 printf(" rule"); 910 else 911 printf(" global"); 912 opts = 0; 913 } 914 if (r->max_src_states) { 915 if (!opts) 916 printf(", "); 917 printf("max-src-states %u", r->max_src_states); 918 opts = 0; 919 } 920 if (r->max_src_conn) { 921 if (!opts) 922 printf(", "); 923 printf("max-src-conn %u", r->max_src_conn); 924 opts = 0; 925 } 926 if (r->max_src_conn_rate.limit) { 927 if (!opts) 928 printf(", "); 929 printf("max-src-conn-rate %u/%u", 930 r->max_src_conn_rate.limit, 931 r->max_src_conn_rate.seconds); 932 opts = 0; 933 } 934 if (r->max_src_nodes) { 935 if (!opts) 936 printf(", "); 937 printf("max-src-nodes %u", r->max_src_nodes); 938 opts = 0; 939 } 940 if (r->overload_tblname[0]) { 941 if (!opts) 942 printf(", "); 943 printf("overload <%s>", r->overload_tblname); 944 if (r->flush) 945 printf(" flush"); 946 if (r->flush & PF_FLUSH_GLOBAL) 947 printf(" global"); 948 } 949 if (r->rule_flag & PFRULE_IFBOUND) { 950 if (!opts) 951 printf(", "); 952 printf("if-bound"); 953 opts = 0; 954 } 955 if (r->rule_flag & PFRULE_STATESLOPPY) { 956 if (!opts) 957 printf(", "); 958 printf("sloppy"); 959 opts = 0; 960 } 961 for (i = 0; i < PFTM_MAX; ++i) 962 if (r->timeout[i]) { 963 int j; 964 965 if (!opts) 966 printf(", "); 967 opts = 0; 968 for (j = 0; pf_timeouts[j].name != NULL; 969 ++j) 970 if (pf_timeouts[j].timeout == i) 971 break; 972 printf("%s %u", pf_timeouts[j].name == NULL ? 973 "inv.timeout" : pf_timeouts[j].name, 974 r->timeout[i]); 975 } 976 printf(")"); 977 } 978 if (r->rule_flag & PFRULE_FRAGMENT) 979 printf(" fragment"); 980 if (r->rule_flag & PFRULE_NODF) 981 printf(" no-df"); 982 if (r->rule_flag & PFRULE_RANDOMID) 983 printf(" random-id"); 984 if (r->min_ttl) 985 printf(" min-ttl %d", r->min_ttl); 986 if (r->max_mss) 987 printf(" max-mss %d", r->max_mss); 988 if (r->rule_flag & PFRULE_SET_TOS) 989 printf(" set-tos 0x%2.2x", r->set_tos); 990 if (r->allow_opts) 991 printf(" allow-opts"); 992 if (r->action == PF_SCRUB) { 993 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 994 printf(" reassemble tcp"); 995 996 printf(" fragment reassemble"); 997 } 998 if (r->label[0]) 999 printf(" label \"%s\"", r->label); 1000 if (r->qname[0] && r->pqname[0]) 1001 printf(" queue(%s, %s)", r->qname, r->pqname); 1002 else if (r->qname[0]) 1003 printf(" queue %s", r->qname); 1004 if (r->tagname[0]) 1005 printf(" tag %s", r->tagname); 1006 if (r->match_tagname[0]) { 1007 if (r->match_tag_not) 1008 printf(" !"); 1009 printf(" tagged %s", r->match_tagname); 1010 } 1011 if (r->rtableid != -1) 1012 printf(" rtable %u", r->rtableid); 1013 if (r->divert.port) { 1014 #ifdef __FreeBSD__ 1015 printf(" divert-to %u", ntohs(r->divert.port)); 1016 #else 1017 if (PF_AZERO(&r->divert.addr, r->af)) { 1018 printf(" divert-reply"); 1019 } else { 1020 /* XXX cut&paste from print_addr */ 1021 char buf[48]; 1022 1023 printf(" divert-to "); 1024 if (inet_ntop(r->af, &r->divert.addr, buf, 1025 sizeof(buf)) == NULL) 1026 printf("?"); 1027 else 1028 printf("%s", buf); 1029 printf(" port %u", ntohs(r->divert.port)); 1030 } 1031 #endif 1032 } 1033 if (!anchor_call[0] && (r->action == PF_NAT || 1034 r->action == PF_BINAT || r->action == PF_RDR)) { 1035 printf(" -> "); 1036 print_pool(&r->rpool, r->rpool.proxy_port[0], 1037 r->rpool.proxy_port[1], r->af, r->action); 1038 } 1039 } 1040 1041 void 1042 print_tabledef(const char *name, int flags, int addrs, 1043 struct node_tinithead *nodes) 1044 { 1045 struct node_tinit *ti, *nti; 1046 struct node_host *h; 1047 1048 printf("table <%s>", name); 1049 if (flags & PFR_TFLAG_CONST) 1050 printf(" const"); 1051 if (flags & PFR_TFLAG_PERSIST) 1052 printf(" persist"); 1053 if (flags & PFR_TFLAG_COUNTERS) 1054 printf(" counters"); 1055 SIMPLEQ_FOREACH(ti, nodes, entries) { 1056 if (ti->file) { 1057 printf(" file \"%s\"", ti->file); 1058 continue; 1059 } 1060 printf(" {"); 1061 for (;;) { 1062 for (h = ti->host; h != NULL; h = h->next) { 1063 printf(h->not ? " !" : " "); 1064 print_addr(&h->addr, h->af, 0); 1065 } 1066 nti = SIMPLEQ_NEXT(ti, entries); 1067 if (nti != NULL && nti->file == NULL) 1068 ti = nti; /* merge lists */ 1069 else 1070 break; 1071 } 1072 printf(" }"); 1073 } 1074 if (addrs && SIMPLEQ_EMPTY(nodes)) 1075 printf(" { }"); 1076 printf("\n"); 1077 } 1078 1079 int 1080 parse_flags(char *s) 1081 { 1082 char *p, *q; 1083 u_int8_t f = 0; 1084 1085 for (p = s; *p; p++) { 1086 if ((q = strchr(tcpflags, *p)) == NULL) 1087 return -1; 1088 else 1089 f |= 1 << (q - tcpflags); 1090 } 1091 return (f ? f : PF_TH_ALL); 1092 } 1093 1094 void 1095 set_ipmask(struct node_host *h, u_int8_t b) 1096 { 1097 struct pf_addr *m, *n; 1098 int i, j = 0; 1099 1100 m = &h->addr.v.a.mask; 1101 memset(m, 0, sizeof(*m)); 1102 1103 while (b >= 32) { 1104 m->addr32[j++] = 0xffffffff; 1105 b -= 32; 1106 } 1107 for (i = 31; i > 31-b; --i) 1108 m->addr32[j] |= (1 << i); 1109 if (b) 1110 m->addr32[j] = htonl(m->addr32[j]); 1111 1112 /* Mask off bits of the address that will never be used. */ 1113 n = &h->addr.v.a.addr; 1114 if (h->addr.type == PF_ADDR_ADDRMASK) 1115 for (i = 0; i < 4; i++) 1116 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1117 } 1118 1119 int 1120 check_netmask(struct node_host *h, sa_family_t af) 1121 { 1122 struct node_host *n = NULL; 1123 struct pf_addr *m; 1124 1125 for (n = h; n != NULL; n = n->next) { 1126 if (h->addr.type == PF_ADDR_TABLE) 1127 continue; 1128 m = &h->addr.v.a.mask; 1129 /* fix up netmask for dynaddr */ 1130 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1131 unmask(m, AF_INET6) > 32) 1132 set_ipmask(n, 32); 1133 /* netmasks > 32 bit are invalid on v4 */ 1134 if (af == AF_INET && 1135 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1136 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1137 unmask(m, AF_INET6)); 1138 return (1); 1139 } 1140 } 1141 return (0); 1142 } 1143 1144 /* interface lookup routines */ 1145 1146 static struct node_host *iftab; 1147 1148 void 1149 ifa_load(void) 1150 { 1151 struct ifaddrs *ifap, *ifa; 1152 struct node_host *n = NULL, *h = NULL; 1153 1154 if (getifaddrs(&ifap) < 0) 1155 err(1, "getifaddrs"); 1156 1157 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1158 if (!(ifa->ifa_addr->sa_family == AF_INET || 1159 ifa->ifa_addr->sa_family == AF_INET6 || 1160 ifa->ifa_addr->sa_family == AF_LINK)) 1161 continue; 1162 n = calloc(1, sizeof(struct node_host)); 1163 if (n == NULL) 1164 err(1, "address: calloc"); 1165 n->af = ifa->ifa_addr->sa_family; 1166 n->ifa_flags = ifa->ifa_flags; 1167 #ifdef __KAME__ 1168 if (n->af == AF_INET6 && 1169 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1170 ifa->ifa_addr)->sin6_addr) && 1171 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1172 0) { 1173 struct sockaddr_in6 *sin6; 1174 1175 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1176 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1177 sin6->sin6_addr.s6_addr[3]; 1178 sin6->sin6_addr.s6_addr[2] = 0; 1179 sin6->sin6_addr.s6_addr[3] = 0; 1180 } 1181 #endif 1182 n->ifindex = 0; 1183 if (n->af == AF_INET) { 1184 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1185 ifa->ifa_addr)->sin_addr.s_addr, 1186 sizeof(struct in_addr)); 1187 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1188 ifa->ifa_netmask)->sin_addr.s_addr, 1189 sizeof(struct in_addr)); 1190 if (ifa->ifa_broadaddr != NULL) 1191 memcpy(&n->bcast, &((struct sockaddr_in *) 1192 ifa->ifa_broadaddr)->sin_addr.s_addr, 1193 sizeof(struct in_addr)); 1194 if (ifa->ifa_dstaddr != NULL) 1195 memcpy(&n->peer, &((struct sockaddr_in *) 1196 ifa->ifa_dstaddr)->sin_addr.s_addr, 1197 sizeof(struct in_addr)); 1198 } else if (n->af == AF_INET6) { 1199 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1200 ifa->ifa_addr)->sin6_addr.s6_addr, 1201 sizeof(struct in6_addr)); 1202 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1203 ifa->ifa_netmask)->sin6_addr.s6_addr, 1204 sizeof(struct in6_addr)); 1205 if (ifa->ifa_broadaddr != NULL) 1206 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1207 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1208 sizeof(struct in6_addr)); 1209 if (ifa->ifa_dstaddr != NULL) 1210 memcpy(&n->peer, &((struct sockaddr_in6 *) 1211 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1212 sizeof(struct in6_addr)); 1213 n->ifindex = ((struct sockaddr_in6 *) 1214 ifa->ifa_addr)->sin6_scope_id; 1215 } 1216 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1217 err(1, "ifa_load: strdup"); 1218 n->next = NULL; 1219 n->tail = n; 1220 if (h == NULL) 1221 h = n; 1222 else { 1223 h->tail->next = n; 1224 h->tail = n; 1225 } 1226 } 1227 1228 iftab = h; 1229 freeifaddrs(ifap); 1230 } 1231 1232 int 1233 get_socket_domain(void) 1234 { 1235 int sdom; 1236 1237 sdom = AF_UNSPEC; 1238 #ifdef WITH_INET6 1239 if (sdom == AF_UNSPEC && feature_present("inet6")) 1240 sdom = AF_INET6; 1241 #endif 1242 #ifdef WITH_INET 1243 if (sdom == AF_UNSPEC && feature_present("inet")) 1244 sdom = AF_INET; 1245 #endif 1246 if (sdom == AF_UNSPEC) 1247 sdom = AF_LINK; 1248 1249 return (sdom); 1250 } 1251 1252 struct node_host * 1253 ifa_exists(const char *ifa_name) 1254 { 1255 struct node_host *n; 1256 struct ifgroupreq ifgr; 1257 int s; 1258 1259 if (iftab == NULL) 1260 ifa_load(); 1261 1262 /* check wether this is a group */ 1263 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1264 err(1, "socket"); 1265 bzero(&ifgr, sizeof(ifgr)); 1266 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1267 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == 0) { 1268 /* fake a node_host */ 1269 if ((n = calloc(1, sizeof(*n))) == NULL) 1270 err(1, "calloc"); 1271 if ((n->ifname = strdup(ifa_name)) == NULL) 1272 err(1, "strdup"); 1273 close(s); 1274 return (n); 1275 } 1276 close(s); 1277 1278 for (n = iftab; n; n = n->next) { 1279 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1280 return (n); 1281 } 1282 1283 return (NULL); 1284 } 1285 1286 struct node_host * 1287 ifa_grouplookup(const char *ifa_name, int flags) 1288 { 1289 struct ifg_req *ifg; 1290 struct ifgroupreq ifgr; 1291 int s, len; 1292 struct node_host *n, *h = NULL; 1293 1294 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1295 err(1, "socket"); 1296 bzero(&ifgr, sizeof(ifgr)); 1297 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1298 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) { 1299 close(s); 1300 return (NULL); 1301 } 1302 1303 len = ifgr.ifgr_len; 1304 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1305 err(1, "calloc"); 1306 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1307 err(1, "SIOCGIFGMEMB"); 1308 1309 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1310 ifg++) { 1311 len -= sizeof(struct ifg_req); 1312 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1313 continue; 1314 if (h == NULL) 1315 h = n; 1316 else { 1317 h->tail->next = n; 1318 h->tail = n->tail; 1319 } 1320 } 1321 free(ifgr.ifgr_groups); 1322 close(s); 1323 1324 return (h); 1325 } 1326 1327 struct node_host * 1328 ifa_lookup(const char *ifa_name, int flags) 1329 { 1330 struct node_host *p = NULL, *h = NULL, *n = NULL; 1331 int got4 = 0, got6 = 0; 1332 const char *last_if = NULL; 1333 1334 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1335 return (h); 1336 1337 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1338 ifa_name = NULL; 1339 1340 if (iftab == NULL) 1341 ifa_load(); 1342 1343 for (p = iftab; p; p = p->next) { 1344 if (ifa_skip_if(ifa_name, p)) 1345 continue; 1346 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1347 continue; 1348 if ((flags & PFI_AFLAG_BROADCAST) && 1349 !(p->ifa_flags & IFF_BROADCAST)) 1350 continue; 1351 if ((flags & PFI_AFLAG_PEER) && 1352 !(p->ifa_flags & IFF_POINTOPOINT)) 1353 continue; 1354 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1355 continue; 1356 if (last_if == NULL || strcmp(last_if, p->ifname)) 1357 got4 = got6 = 0; 1358 last_if = p->ifname; 1359 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1360 continue; 1361 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1362 continue; 1363 if (p->af == AF_INET) 1364 got4 = 1; 1365 else 1366 got6 = 1; 1367 n = calloc(1, sizeof(struct node_host)); 1368 if (n == NULL) 1369 err(1, "address: calloc"); 1370 n->af = p->af; 1371 if (flags & PFI_AFLAG_BROADCAST) 1372 memcpy(&n->addr.v.a.addr, &p->bcast, 1373 sizeof(struct pf_addr)); 1374 else if (flags & PFI_AFLAG_PEER) 1375 memcpy(&n->addr.v.a.addr, &p->peer, 1376 sizeof(struct pf_addr)); 1377 else 1378 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1379 sizeof(struct pf_addr)); 1380 if (flags & PFI_AFLAG_NETWORK) 1381 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1382 else { 1383 if (n->af == AF_INET) { 1384 if (p->ifa_flags & IFF_LOOPBACK && 1385 p->ifa_flags & IFF_LINK1) 1386 memcpy(&n->addr.v.a.mask, 1387 &p->addr.v.a.mask, 1388 sizeof(struct pf_addr)); 1389 else 1390 set_ipmask(n, 32); 1391 } else 1392 set_ipmask(n, 128); 1393 } 1394 n->ifindex = p->ifindex; 1395 1396 n->next = NULL; 1397 n->tail = n; 1398 if (h == NULL) 1399 h = n; 1400 else { 1401 h->tail->next = n; 1402 h->tail = n; 1403 } 1404 } 1405 return (h); 1406 } 1407 1408 int 1409 ifa_skip_if(const char *filter, struct node_host *p) 1410 { 1411 int n; 1412 1413 if (p->af != AF_INET && p->af != AF_INET6) 1414 return (1); 1415 if (filter == NULL || !*filter) 1416 return (0); 1417 if (!strcmp(p->ifname, filter)) 1418 return (0); /* exact match */ 1419 n = strlen(filter); 1420 if (n < 1 || n >= IFNAMSIZ) 1421 return (1); /* sanity check */ 1422 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1423 return (1); /* only do exact match in that case */ 1424 if (strncmp(p->ifname, filter, n)) 1425 return (1); /* prefix doesn't match */ 1426 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1427 } 1428 1429 1430 struct node_host * 1431 host(const char *s) 1432 { 1433 struct node_host *h = NULL; 1434 int mask, v4mask, v6mask, cont = 1; 1435 char *p, *q, *ps; 1436 1437 if ((p = strrchr(s, '/')) != NULL) { 1438 mask = strtol(p+1, &q, 0); 1439 if (!q || *q || mask > 128 || q == (p+1)) { 1440 fprintf(stderr, "invalid netmask '%s'\n", p); 1441 return (NULL); 1442 } 1443 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1444 err(1, "host: malloc"); 1445 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1446 v4mask = v6mask = mask; 1447 } else { 1448 if ((ps = strdup(s)) == NULL) 1449 err(1, "host: strdup"); 1450 v4mask = 32; 1451 v6mask = 128; 1452 mask = -1; 1453 } 1454 1455 /* interface with this name exists? */ 1456 if (cont && (h = host_if(ps, mask)) != NULL) 1457 cont = 0; 1458 1459 /* IPv4 address? */ 1460 if (cont && (h = host_v4(s, mask)) != NULL) 1461 cont = 0; 1462 1463 /* IPv6 address? */ 1464 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1465 cont = 0; 1466 1467 /* dns lookup */ 1468 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1469 cont = 0; 1470 free(ps); 1471 1472 if (h == NULL || cont == 1) { 1473 fprintf(stderr, "no IP address found for %s\n", s); 1474 return (NULL); 1475 } 1476 return (h); 1477 } 1478 1479 struct node_host * 1480 host_if(const char *s, int mask) 1481 { 1482 struct node_host *n, *h = NULL; 1483 char *p, *ps; 1484 int flags = 0; 1485 1486 if ((ps = strdup(s)) == NULL) 1487 err(1, "host_if: strdup"); 1488 while ((p = strrchr(ps, ':')) != NULL) { 1489 if (!strcmp(p+1, "network")) 1490 flags |= PFI_AFLAG_NETWORK; 1491 else if (!strcmp(p+1, "broadcast")) 1492 flags |= PFI_AFLAG_BROADCAST; 1493 else if (!strcmp(p+1, "peer")) 1494 flags |= PFI_AFLAG_PEER; 1495 else if (!strcmp(p+1, "0")) 1496 flags |= PFI_AFLAG_NOALIAS; 1497 else { 1498 free(ps); 1499 return (NULL); 1500 } 1501 *p = '\0'; 1502 } 1503 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1504 fprintf(stderr, "illegal combination of interface modifiers\n"); 1505 free(ps); 1506 return (NULL); 1507 } 1508 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1509 fprintf(stderr, "network or broadcast lookup, but " 1510 "extra netmask given\n"); 1511 free(ps); 1512 return (NULL); 1513 } 1514 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1515 /* interface with this name exists */ 1516 h = ifa_lookup(ps, flags); 1517 for (n = h; n != NULL && mask > -1; n = n->next) 1518 set_ipmask(n, mask); 1519 } 1520 1521 free(ps); 1522 return (h); 1523 } 1524 1525 struct node_host * 1526 host_v4(const char *s, int mask) 1527 { 1528 struct node_host *h = NULL; 1529 struct in_addr ina; 1530 int bits = 32; 1531 1532 memset(&ina, 0, sizeof(struct in_addr)); 1533 if (strrchr(s, '/') != NULL) { 1534 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1535 return (NULL); 1536 } else { 1537 if (inet_pton(AF_INET, s, &ina) != 1) 1538 return (NULL); 1539 } 1540 1541 h = calloc(1, sizeof(struct node_host)); 1542 if (h == NULL) 1543 err(1, "address: calloc"); 1544 h->ifname = NULL; 1545 h->af = AF_INET; 1546 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1547 set_ipmask(h, bits); 1548 h->next = NULL; 1549 h->tail = h; 1550 1551 return (h); 1552 } 1553 1554 struct node_host * 1555 host_v6(const char *s, int mask) 1556 { 1557 struct addrinfo hints, *res; 1558 struct node_host *h = NULL; 1559 1560 memset(&hints, 0, sizeof(hints)); 1561 hints.ai_family = AF_INET6; 1562 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1563 hints.ai_flags = AI_NUMERICHOST; 1564 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1565 h = calloc(1, sizeof(struct node_host)); 1566 if (h == NULL) 1567 err(1, "address: calloc"); 1568 h->ifname = NULL; 1569 h->af = AF_INET6; 1570 memcpy(&h->addr.v.a.addr, 1571 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1572 sizeof(h->addr.v.a.addr)); 1573 h->ifindex = 1574 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1575 set_ipmask(h, mask); 1576 freeaddrinfo(res); 1577 h->next = NULL; 1578 h->tail = h; 1579 } 1580 1581 return (h); 1582 } 1583 1584 struct node_host * 1585 host_dns(const char *s, int v4mask, int v6mask) 1586 { 1587 struct addrinfo hints, *res0, *res; 1588 struct node_host *n, *h = NULL; 1589 int error, noalias = 0; 1590 int got4 = 0, got6 = 0; 1591 char *p, *ps; 1592 1593 if ((ps = strdup(s)) == NULL) 1594 err(1, "host_dns: strdup"); 1595 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1596 noalias = 1; 1597 *p = '\0'; 1598 } 1599 memset(&hints, 0, sizeof(hints)); 1600 hints.ai_family = PF_UNSPEC; 1601 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1602 error = getaddrinfo(ps, NULL, &hints, &res0); 1603 if (error) { 1604 free(ps); 1605 return (h); 1606 } 1607 1608 for (res = res0; res; res = res->ai_next) { 1609 if (res->ai_family != AF_INET && 1610 res->ai_family != AF_INET6) 1611 continue; 1612 if (noalias) { 1613 if (res->ai_family == AF_INET) { 1614 if (got4) 1615 continue; 1616 got4 = 1; 1617 } else { 1618 if (got6) 1619 continue; 1620 got6 = 1; 1621 } 1622 } 1623 n = calloc(1, sizeof(struct node_host)); 1624 if (n == NULL) 1625 err(1, "host_dns: calloc"); 1626 n->ifname = NULL; 1627 n->af = res->ai_family; 1628 if (res->ai_family == AF_INET) { 1629 memcpy(&n->addr.v.a.addr, 1630 &((struct sockaddr_in *) 1631 res->ai_addr)->sin_addr.s_addr, 1632 sizeof(struct in_addr)); 1633 set_ipmask(n, v4mask); 1634 } else { 1635 memcpy(&n->addr.v.a.addr, 1636 &((struct sockaddr_in6 *) 1637 res->ai_addr)->sin6_addr.s6_addr, 1638 sizeof(struct in6_addr)); 1639 n->ifindex = 1640 ((struct sockaddr_in6 *) 1641 res->ai_addr)->sin6_scope_id; 1642 set_ipmask(n, v6mask); 1643 } 1644 n->next = NULL; 1645 n->tail = n; 1646 if (h == NULL) 1647 h = n; 1648 else { 1649 h->tail->next = n; 1650 h->tail = n; 1651 } 1652 } 1653 freeaddrinfo(res0); 1654 free(ps); 1655 1656 return (h); 1657 } 1658 1659 /* 1660 * convert a hostname to a list of addresses and put them in the given buffer. 1661 * test: 1662 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1663 */ 1664 int 1665 append_addr(struct pfr_buffer *b, char *s, int test) 1666 { 1667 char *r; 1668 struct node_host *h, *n; 1669 int rv, not = 0; 1670 1671 for (r = s; *r == '!'; r++) 1672 not = !not; 1673 if ((n = host(r)) == NULL) { 1674 errno = 0; 1675 return (-1); 1676 } 1677 rv = append_addr_host(b, n, test, not); 1678 do { 1679 h = n; 1680 n = n->next; 1681 free(h); 1682 } while (n != NULL); 1683 return (rv); 1684 } 1685 1686 /* 1687 * same as previous function, but with a pre-parsed input and the ability 1688 * to "negate" the result. Does not free the node_host list. 1689 * not: 1690 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1691 */ 1692 int 1693 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1694 { 1695 int bits; 1696 struct pfr_addr addr; 1697 1698 do { 1699 bzero(&addr, sizeof(addr)); 1700 addr.pfra_not = n->not ^ not; 1701 addr.pfra_af = n->af; 1702 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1703 switch (n->af) { 1704 case AF_INET: 1705 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1706 bits = 32; 1707 break; 1708 case AF_INET6: 1709 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1710 sizeof(struct in6_addr)); 1711 bits = 128; 1712 break; 1713 default: 1714 errno = EINVAL; 1715 return (-1); 1716 } 1717 if ((test && (not || addr.pfra_net != bits)) || 1718 addr.pfra_net > bits) { 1719 errno = EINVAL; 1720 return (-1); 1721 } 1722 if (pfr_buf_add(b, &addr)) 1723 return (-1); 1724 } while ((n = n->next) != NULL); 1725 1726 return (0); 1727 } 1728 1729 int 1730 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1731 { 1732 struct pfioc_trans_e trans; 1733 1734 bzero(&trans, sizeof(trans)); 1735 trans.rs_num = rs_num; 1736 if (strlcpy(trans.anchor, anchor, 1737 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1738 errx(1, "pfctl_add_trans: strlcpy"); 1739 1740 return pfr_buf_add(buf, &trans); 1741 } 1742 1743 u_int32_t 1744 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1745 { 1746 struct pfioc_trans_e *p; 1747 1748 PFRB_FOREACH(p, buf) 1749 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1750 return (p->ticket); 1751 errx(1, "pfctl_get_ticket: assertion failed"); 1752 } 1753 1754 int 1755 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1756 { 1757 struct pfioc_trans trans; 1758 1759 bzero(&trans, sizeof(trans)); 1760 trans.size = buf->pfrb_size - from; 1761 trans.esize = sizeof(struct pfioc_trans_e); 1762 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1763 return ioctl(dev, cmd, &trans); 1764 } 1765