1 /* $NetBSD: pfctl_parser.c,v 1.11 2011/10/17 16:35:22 mbalmer Exp $ */ 2 /* $OpenBSD: pfctl_parser.c,v 1.234 2006/10/31 23:46:24 mcbride Exp $ */ 3 4 /* 5 * Copyright (c) 2001 Daniel Hartmeier 6 * Copyright (c) 2002,2003 Henning Brauer 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * - Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * - Redistributions in binary form must reproduce the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer in the documentation and/or other materials provided 18 * with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 28 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 #include <sys/types.h> 36 #include <sys/ioctl.h> 37 #include <sys/socket.h> 38 #include <sys/param.h> 39 #include <net/if.h> 40 #include <netinet/in.h> 41 #include <netinet/in_systm.h> 42 #include <netinet/ip.h> 43 #include <netinet/ip_icmp.h> 44 #include <netinet/icmp6.h> 45 #include <net/pfvar.h> 46 #include <arpa/inet.h> 47 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 #include <ctype.h> 52 #include <netdb.h> 53 #include <stdarg.h> 54 #include <errno.h> 55 #include <err.h> 56 #include <ifaddrs.h> 57 #include <unistd.h> 58 59 #include "pfctl_parser.h" 60 #include "pfctl.h" 61 62 #ifdef __NetBSD__ 63 #include <net/if_compat.h> 64 #endif /* __NetBSD__ */ 65 66 void print_op (u_int8_t, const char *, const char *); 67 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *); 68 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned); 69 void print_flags (u_int8_t); 70 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 71 struct pf_rule_addr *, u_int8_t, u_int8_t, int); 72 int ifa_skip_if(const char *filter, struct node_host *p); 73 74 struct node_host *ifa_grouplookup(const char *, int); 75 struct node_host *host_if(const char *, int); 76 struct node_host *host_v4(const char *, int); 77 struct node_host *host_v6(const char *, int); 78 struct node_host *host_dns(const char *, int, int); 79 80 const char *tcpflags = "FSRPAUEW"; 81 82 static const struct icmptypeent icmp_type[] = { 83 { "echoreq", ICMP_ECHO }, 84 { "echorep", ICMP_ECHOREPLY }, 85 { "unreach", ICMP_UNREACH }, 86 { "squench", ICMP_SOURCEQUENCH }, 87 { "redir", ICMP_REDIRECT }, 88 #ifdef ICMP_ALTHOSTADDR 89 { "althost", ICMP_ALTHOSTADDR }, 90 #endif 91 { "routeradv", ICMP_ROUTERADVERT }, 92 { "routersol", ICMP_ROUTERSOLICIT }, 93 { "timex", ICMP_TIMXCEED }, 94 { "paramprob", ICMP_PARAMPROB }, 95 { "timereq", ICMP_TSTAMP }, 96 { "timerep", ICMP_TSTAMPREPLY }, 97 { "inforeq", ICMP_IREQ }, 98 { "inforep", ICMP_IREQREPLY }, 99 { "maskreq", ICMP_MASKREQ }, 100 { "maskrep", ICMP_MASKREPLY }, 101 #ifdef ICMP_TRACEROUTE 102 { "trace", ICMP_TRACEROUTE }, 103 #endif 104 #ifdef ICMP_DATACONVERR 105 { "dataconv", ICMP_DATACONVERR }, 106 #endif 107 #ifdef ICMP_MOBILE_REDIRECT 108 { "mobredir", ICMP_MOBILE_REDIRECT }, 109 #endif 110 #ifdef ICMP_IPV6_WHEREAREYOU 111 { "ipv6-where", ICMP_IPV6_WHEREAREYOU }, 112 #endif 113 #ifdef ICMP_IPV6_IAMHERE 114 { "ipv6-here", ICMP_IPV6_IAMHERE }, 115 #endif 116 #ifdef ICMP_MOBILE_REGREQUEST 117 { "mobregreq", ICMP_MOBILE_REGREQUEST }, 118 #endif 119 #ifdef ICMP_MOBILE_REGREPLY 120 { "mobregrep", ICMP_MOBILE_REGREPLY }, 121 #endif 122 #ifdef ICMP_SKIP 123 { "skip", ICMP_SKIP }, 124 #endif 125 #ifdef ICMP_PHOTURIS 126 { "photuris", ICMP_PHOTURIS } 127 #endif 128 }; 129 130 static const struct icmptypeent icmp6_type[] = { 131 { "unreach", ICMP6_DST_UNREACH }, 132 { "toobig", ICMP6_PACKET_TOO_BIG }, 133 { "timex", ICMP6_TIME_EXCEEDED }, 134 { "paramprob", ICMP6_PARAM_PROB }, 135 { "echoreq", ICMP6_ECHO_REQUEST }, 136 { "echorep", ICMP6_ECHO_REPLY }, 137 { "groupqry", ICMP6_MEMBERSHIP_QUERY }, 138 { "listqry", MLD_LISTENER_QUERY }, 139 { "grouprep", ICMP6_MEMBERSHIP_REPORT }, 140 { "listenrep", MLD_LISTENER_REPORT }, 141 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION }, 142 { "listendone", MLD_LISTENER_DONE }, 143 { "routersol", ND_ROUTER_SOLICIT }, 144 { "routeradv", ND_ROUTER_ADVERT }, 145 { "neighbrsol", ND_NEIGHBOR_SOLICIT }, 146 { "neighbradv", ND_NEIGHBOR_ADVERT }, 147 { "redir", ND_REDIRECT }, 148 { "routrrenum", ICMP6_ROUTER_RENUMBERING }, 149 { "wrureq", ICMP6_WRUREQUEST }, 150 { "wrurep", ICMP6_WRUREPLY }, 151 { "fqdnreq", ICMP6_FQDN_QUERY }, 152 { "fqdnrep", ICMP6_FQDN_REPLY }, 153 { "niqry", ICMP6_NI_QUERY }, 154 { "nirep", ICMP6_NI_REPLY }, 155 { "mtraceresp", MLD_MTRACE_RESP }, 156 { "mtrace", MLD_MTRACE } 157 }; 158 159 static const struct icmpcodeent icmp_code[] = { 160 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET }, 161 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST }, 162 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL }, 163 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT }, 164 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG }, 165 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL }, 166 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN }, 167 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN }, 168 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED }, 169 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB }, 170 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB }, 171 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET }, 172 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST }, 173 #ifdef ICMP_UNREACH_FILTER_PROHIB 174 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB }, 175 #endif 176 #ifdef ICMP_UNREACH_HOST_PRECEDENCE 177 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE }, 178 #endif 179 #ifdef ICMP_UNREACH_PRECEDENCE_CUTOFF 180 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF }, 181 #endif 182 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET }, 183 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST }, 184 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET }, 185 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST }, 186 #ifdef ICMP_ROUTERADVERT_NORMAL 187 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL }, 188 #endif 189 #ifdef ICMP_ROUTERADVERT_NOROUTE_COMMON 190 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON }, 191 #endif 192 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS }, 193 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS }, 194 #ifdef ICMP_PARAMPROB_ERRATPTR 195 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR }, 196 #endif 197 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT }, 198 #ifdef ICMP_PARAMPROB_LENGTH 199 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH }, 200 #endif 201 #ifdef ICMP_PHOTURIS 202 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX }, 203 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED }, 204 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED } 205 #endif 206 }; 207 208 static const struct icmpcodeent icmp6_code[] = { 209 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN }, 210 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE }, 211 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR }, 212 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE }, 213 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR }, 214 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT }, 215 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT }, 216 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY }, 217 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER }, 218 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER }, 219 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK }, 220 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER } 221 }; 222 223 const struct pf_timeout pf_timeouts[] = { 224 { "tcp.first", PFTM_TCP_FIRST_PACKET }, 225 { "tcp.opening", PFTM_TCP_OPENING }, 226 { "tcp.established", PFTM_TCP_ESTABLISHED }, 227 { "tcp.closing", PFTM_TCP_CLOSING }, 228 { "tcp.finwait", PFTM_TCP_FIN_WAIT }, 229 { "tcp.closed", PFTM_TCP_CLOSED }, 230 { "tcp.tsdiff", PFTM_TS_DIFF }, 231 { "udp.first", PFTM_UDP_FIRST_PACKET }, 232 { "udp.single", PFTM_UDP_SINGLE }, 233 { "udp.multiple", PFTM_UDP_MULTIPLE }, 234 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 235 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 236 { "other.first", PFTM_OTHER_FIRST_PACKET }, 237 { "other.single", PFTM_OTHER_SINGLE }, 238 { "other.multiple", PFTM_OTHER_MULTIPLE }, 239 { "frag", PFTM_FRAG }, 240 { "interval", PFTM_INTERVAL }, 241 { "adaptive.start", PFTM_ADAPTIVE_START }, 242 { "adaptive.end", PFTM_ADAPTIVE_END }, 243 { "src.track", PFTM_SRC_NODE }, 244 { NULL, 0 } 245 }; 246 247 const struct icmptypeent * 248 geticmptypebynumber(u_int8_t type, sa_family_t af) 249 { 250 unsigned int i; 251 252 if (af != AF_INET6) { 253 for (i=0; i < (sizeof (icmp_type) / sizeof(icmp_type[0])); 254 i++) { 255 if (type == icmp_type[i].type) 256 return (&icmp_type[i]); 257 } 258 } else { 259 for (i=0; i < (sizeof (icmp6_type) / 260 sizeof(icmp6_type[0])); i++) { 261 if (type == icmp6_type[i].type) 262 return (&icmp6_type[i]); 263 } 264 } 265 return (NULL); 266 } 267 268 const struct icmptypeent * 269 geticmptypebyname(char *w, sa_family_t af) 270 { 271 unsigned int i; 272 273 if (af != AF_INET6) { 274 for (i=0; i < (sizeof (icmp_type) / sizeof(icmp_type[0])); 275 i++) { 276 if (!strcmp(w, icmp_type[i].name)) 277 return (&icmp_type[i]); 278 } 279 } else { 280 for (i=0; i < (sizeof (icmp6_type) / 281 sizeof(icmp6_type[0])); i++) { 282 if (!strcmp(w, icmp6_type[i].name)) 283 return (&icmp6_type[i]); 284 } 285 } 286 return (NULL); 287 } 288 289 const struct icmpcodeent * 290 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 291 { 292 unsigned int i; 293 294 if (af != AF_INET6) { 295 for (i=0; i < (sizeof (icmp_code) / sizeof(icmp_code[0])); 296 i++) { 297 if (type == icmp_code[i].type && 298 code == icmp_code[i].code) 299 return (&icmp_code[i]); 300 } 301 } else { 302 for (i=0; i < (sizeof (icmp6_code) / 303 sizeof(icmp6_code[0])); i++) { 304 if (type == icmp6_code[i].type && 305 code == icmp6_code[i].code) 306 return (&icmp6_code[i]); 307 } 308 } 309 return (NULL); 310 } 311 312 const struct icmpcodeent * 313 geticmpcodebyname(u_long type, char *w, sa_family_t af) 314 { 315 unsigned int i; 316 317 if (af != AF_INET6) { 318 for (i=0; i < (sizeof (icmp_code) / sizeof(icmp_code[0])); 319 i++) { 320 if (type == icmp_code[i].type && 321 !strcmp(w, icmp_code[i].name)) 322 return (&icmp_code[i]); 323 } 324 } else { 325 for (i=0; i < (sizeof (icmp6_code) / 326 sizeof(icmp6_code[0])); i++) { 327 if (type == icmp6_code[i].type && 328 !strcmp(w, icmp6_code[i].name)) 329 return (&icmp6_code[i]); 330 } 331 } 332 return (NULL); 333 } 334 335 void 336 print_op(u_int8_t op, const char *a1, const char *a2) 337 { 338 if (op == PF_OP_IRG) 339 printf(" %s >< %s", a1, a2); 340 else if (op == PF_OP_XRG) 341 printf(" %s <> %s", a1, a2); 342 else if (op == PF_OP_EQ) 343 printf(" = %s", a1); 344 else if (op == PF_OP_NE) 345 printf(" != %s", a1); 346 else if (op == PF_OP_LT) 347 printf(" < %s", a1); 348 else if (op == PF_OP_LE) 349 printf(" <= %s", a1); 350 else if (op == PF_OP_GT) 351 printf(" > %s", a1); 352 else if (op == PF_OP_GE) 353 printf(" >= %s", a1); 354 else if (op == PF_OP_RRG) 355 printf(" %s:%s", a1, a2); 356 } 357 358 void 359 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto) 360 { 361 char a1[6], a2[6]; 362 struct servent *s; 363 364 s = getservbyport(p1, proto); 365 p1 = ntohs(p1); 366 p2 = ntohs(p2); 367 snprintf(a1, sizeof(a1), "%u", p1); 368 snprintf(a2, sizeof(a2), "%u", p2); 369 printf(" port"); 370 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 371 print_op(op, s->s_name, a2); 372 else 373 print_op(op, a1, a2); 374 } 375 376 void 377 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 378 { 379 char a1[11], a2[11]; 380 381 snprintf(a1, sizeof(a1), "%u", u1); 382 snprintf(a2, sizeof(a2), "%u", u2); 383 printf(" %s", t); 384 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 385 print_op(op, "unknown", a2); 386 else 387 print_op(op, a1, a2); 388 } 389 390 void 391 print_flags(u_int8_t f) 392 { 393 int i; 394 395 for (i = 0; tcpflags[i]; ++i) 396 if (f & (1 << i)) 397 printf("%c", tcpflags[i]); 398 } 399 400 void 401 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 402 sa_family_t af, u_int8_t proto, int verbose) 403 { 404 char buf[PF_OSFP_LEN*3]; 405 if (src->addr.type == PF_ADDR_ADDRMASK && 406 dst->addr.type == PF_ADDR_ADDRMASK && 407 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 408 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 409 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 410 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 411 !src->neg && !dst->neg && 412 !src->port_op && !dst->port_op && 413 osfp == PF_OSFP_ANY) 414 printf(" all"); 415 else { 416 printf(" from "); 417 if (src->neg) 418 printf("! "); 419 print_addr(&src->addr, af, verbose); 420 if (src->port_op) 421 print_port(src->port_op, src->port[0], 422 src->port[1], 423 proto == IPPROTO_TCP ? "tcp" : "udp"); 424 if (osfp != PF_OSFP_ANY) 425 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 426 sizeof(buf))); 427 428 printf(" to "); 429 if (dst->neg) 430 printf("! "); 431 print_addr(&dst->addr, af, verbose); 432 if (dst->port_op) 433 print_port(dst->port_op, dst->port[0], 434 dst->port[1], 435 proto == IPPROTO_TCP ? "tcp" : "udp"); 436 } 437 } 438 439 void 440 print_pool(struct pf_pool *pool, u_int16_t p1, u_int16_t p2, 441 sa_family_t af, int id) 442 { 443 struct pf_pooladdr *pooladdr; 444 445 if ((TAILQ_FIRST(&pool->list) != NULL) && 446 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 447 printf("{ "); 448 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 449 switch (id) { 450 case PF_NAT: 451 case PF_RDR: 452 case PF_BINAT: 453 print_addr(&pooladdr->addr, af, 0); 454 break; 455 case PF_PASS: 456 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 457 printf("%s", pooladdr->ifname); 458 else { 459 printf("(%s ", pooladdr->ifname); 460 print_addr(&pooladdr->addr, af, 0); 461 printf(")"); 462 } 463 break; 464 default: 465 break; 466 } 467 if (TAILQ_NEXT(pooladdr, entries) != NULL) 468 printf(", "); 469 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 470 printf(" }"); 471 } 472 switch (id) { 473 case PF_NAT: 474 if ((p1 != PF_NAT_PROXY_PORT_LOW || 475 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 476 if (p1 == p2) 477 printf(" port %u", p1); 478 else 479 printf(" port %u:%u", p1, p2); 480 } 481 break; 482 case PF_RDR: 483 if (p1) { 484 printf(" port %u", p1); 485 if (p2 && (p2 != p1)) 486 printf(":%u", p2); 487 } 488 break; 489 default: 490 break; 491 } 492 switch (pool->opts & PF_POOL_TYPEMASK) { 493 case PF_POOL_NONE: 494 break; 495 case PF_POOL_BITMASK: 496 printf(" bitmask"); 497 break; 498 case PF_POOL_RANDOM: 499 printf(" random"); 500 break; 501 case PF_POOL_SRCHASH: 502 printf(" source-hash 0x%08x%08x%08x%08x", 503 pool->key.key32[0], pool->key.key32[1], 504 pool->key.key32[2], pool->key.key32[3]); 505 break; 506 case PF_POOL_ROUNDROBIN: 507 printf(" round-robin"); 508 break; 509 } 510 if (pool->opts & PF_POOL_STICKYADDR) 511 printf(" sticky-address"); 512 if (id == PF_NAT && p1 == 0 && p2 == 0) 513 printf(" static-port"); 514 } 515 516 const char *pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 517 const char *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 518 const char *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 519 const char *pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 520 521 void 522 print_status(struct pf_status *s, int opts) 523 { 524 char statline[80], *running; 525 time_t runtime; 526 int i; 527 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 528 static const char hex[] = "0123456789abcdef"; 529 530 runtime = time(NULL) - s->since; 531 running = s->running ? "Enabled" : "Disabled"; 532 533 if (s->since) { 534 unsigned sec, min, hrs, day = runtime; 535 536 sec = day % 60; 537 day /= 60; 538 min = day % 60; 539 day /= 60; 540 hrs = day % 24; 541 day /= 24; 542 snprintf(statline, sizeof(statline), 543 "Status: %s for %u days %.2u:%.2u:%.2u", 544 running, day, hrs, min, sec); 545 } else 546 snprintf(statline, sizeof(statline), "Status: %s", running); 547 printf("%-44s", statline); 548 switch (s->debug) { 549 case PF_DEBUG_NONE: 550 printf("%15s\n\n", "Debug: None"); 551 break; 552 case PF_DEBUG_URGENT: 553 printf("%15s\n\n", "Debug: Urgent"); 554 break; 555 case PF_DEBUG_MISC: 556 printf("%15s\n\n", "Debug: Misc"); 557 break; 558 case PF_DEBUG_NOISY: 559 printf("%15s\n\n", "Debug: Loud"); 560 break; 561 } 562 563 if (opts & PF_OPT_VERBOSE) { 564 printf("Hostid: 0x%08x\n", ntohl(s->hostid)); 565 566 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 567 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 568 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 569 } 570 buf[i + i] = '\0'; 571 printf("Checksum: 0x%s\n\n", buf); 572 } 573 574 if (s->ifname[0] != 0) { 575 printf("Interface Stats for %-16s %5s %16s\n", 576 s->ifname, "IPv4", "IPv6"); 577 printf(" %-25s %14llu %16llu\n", "Bytes In", 578 (unsigned long long)s->bcounters[0][0], 579 (unsigned long long)s->bcounters[1][0]); 580 printf(" %-25s %14llu %16llu\n", "Bytes Out", 581 (unsigned long long)s->bcounters[0][1], 582 (unsigned long long)s->bcounters[1][1]); 583 printf(" Packets In\n"); 584 printf(" %-23s %14llu %16llu\n", "Passed", 585 (unsigned long long)s->pcounters[0][0][PF_PASS], 586 (unsigned long long)s->pcounters[1][0][PF_PASS]); 587 printf(" %-23s %14llu %16llu\n", "Blocked", 588 (unsigned long long)s->pcounters[0][0][PF_DROP], 589 (unsigned long long)s->pcounters[1][0][PF_DROP]); 590 printf(" Packets Out\n"); 591 printf(" %-23s %14llu %16llu\n", "Passed", 592 (unsigned long long)s->pcounters[0][1][PF_PASS], 593 (unsigned long long)s->pcounters[1][1][PF_PASS]); 594 printf(" %-23s %14llu %16llu\n\n", "Blocked", 595 (unsigned long long)s->pcounters[0][1][PF_DROP], 596 (unsigned long long)s->pcounters[1][1][PF_DROP]); 597 } 598 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 599 printf(" %-25s %14u %14s\n", "current entries", s->states, ""); 600 for (i = 0; i < FCNT_MAX; i++) { 601 printf(" %-25s %14llu ", pf_fcounters[i], 602 (unsigned long long)s->fcounters[i]); 603 if (runtime > 0) 604 printf("%14.1f/s\n", 605 (double)s->fcounters[i] / (double)runtime); 606 else 607 printf("%14s\n", ""); 608 } 609 if (opts & PF_OPT_VERBOSE) { 610 printf("Source Tracking Table\n"); 611 printf(" %-25s %14u %14s\n", "current entries", 612 s->src_nodes, ""); 613 for (i = 0; i < SCNT_MAX; i++) { 614 printf(" %-25s %14lld ", pf_scounters[i], 615 (unsigned long long)s->scounters[i]); 616 if (runtime > 0) 617 printf("%14.1f/s\n", 618 (double)s->scounters[i] / (double)runtime); 619 else 620 printf("%14s\n", ""); 621 } 622 } 623 printf("Counters\n"); 624 for (i = 0; i < PFRES_MAX; i++) { 625 printf(" %-25s %14llu ", pf_reasons[i], 626 (unsigned long long)s->counters[i]); 627 if (runtime > 0) 628 printf("%14.1f/s\n", 629 (double)s->counters[i] / (double)runtime); 630 else 631 printf("%14s\n", ""); 632 } 633 if (opts & PF_OPT_VERBOSE) { 634 printf("Limit Counters\n"); 635 for (i = 0; i < LCNT_MAX; i++) { 636 printf(" %-25s %14lld ", pf_lcounters[i], 637 (unsigned long long)s->lcounters[i]); 638 if (runtime > 0) 639 printf("%14.1f/s\n", 640 (double)s->lcounters[i] / (double)runtime); 641 else 642 printf("%14s\n", ""); 643 } 644 } 645 } 646 647 void 648 print_src_node(struct pf_src_node *sn, int opts) 649 { 650 struct pf_addr_wrap aw; 651 int min, sec; 652 653 memset(&aw, 0, sizeof(aw)); 654 if (sn->af == AF_INET) 655 aw.v.a.mask.addr32[0] = 0xffffffff; 656 else 657 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 658 659 aw.v.a.addr = sn->addr; 660 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 661 printf(" -> "); 662 aw.v.a.addr = sn->raddr; 663 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 664 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 665 sn->conn, sn->conn_rate.count / 1000, 666 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 667 if (opts & PF_OPT_VERBOSE) { 668 sec = sn->creation % 60; 669 sn->creation /= 60; 670 min = sn->creation % 60; 671 sn->creation /= 60; 672 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 673 if (sn->states == 0) { 674 sec = sn->expire % 60; 675 sn->expire /= 60; 676 min = sn->expire % 60; 677 sn->expire /= 60; 678 printf(", expires in %.2u:%.2u:%.2u", 679 sn->expire, min, sec); 680 } 681 printf(", %llu pkts, %llu bytes", 682 (unsigned long long)sn->packets[0] + sn->packets[1], 683 (unsigned long long)sn->bytes[0] + sn->bytes[1]); 684 switch (sn->ruletype) { 685 case PF_NAT: 686 if (sn->rule.nr != -1) 687 printf(", nat rule %u", sn->rule.nr); 688 break; 689 case PF_RDR: 690 if (sn->rule.nr != -1) 691 printf(", rdr rule %u", sn->rule.nr); 692 break; 693 case PF_PASS: 694 if (sn->rule.nr != -1) 695 printf(", filter rule %u", sn->rule.nr); 696 break; 697 } 698 printf("\n"); 699 } 700 } 701 702 void 703 print_rule(struct pf_rule *r, const char *anchor_call, int verbose) 704 { 705 static const char *actiontypes[] = { "pass", "block", "scrub", 706 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" }; 707 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 708 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 709 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 710 int i, opts; 711 712 if (verbose) 713 printf("@%d ", r->nr); 714 if (r->action > PF_NORDR) 715 printf("action(%d)", r->action); 716 else if (anchor_call[0]) { 717 if (anchor_call[0] == '_') { 718 printf("%s", anchortypes[r->action]); 719 } else 720 printf("%s \"%s\"", anchortypes[r->action], 721 anchor_call); 722 } else { 723 printf("%s", actiontypes[r->action]); 724 if (r->natpass) 725 printf(" pass"); 726 } 727 if (r->action == PF_DROP) { 728 if (r->rule_flag & PFRULE_RETURN) 729 printf(" return"); 730 else if (r->rule_flag & PFRULE_RETURNRST) { 731 if (!r->return_ttl) 732 printf(" return-rst"); 733 else 734 printf(" return-rst(ttl %d)", r->return_ttl); 735 } else if (r->rule_flag & PFRULE_RETURNICMP) { 736 const struct icmpcodeent *ic, *ic6; 737 738 ic = geticmpcodebynumber(r->return_icmp >> 8, 739 r->return_icmp & 255, AF_INET); 740 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 741 r->return_icmp6 & 255, AF_INET6); 742 743 switch (r->af) { 744 case AF_INET: 745 printf(" return-icmp"); 746 if (ic == NULL) 747 printf("(%u)", r->return_icmp & 255); 748 else 749 printf("(%s)", ic->name); 750 break; 751 case AF_INET6: 752 printf(" return-icmp6"); 753 if (ic6 == NULL) 754 printf("(%u)", r->return_icmp6 & 255); 755 else 756 printf("(%s)", ic6->name); 757 break; 758 default: 759 printf(" return-icmp"); 760 if (ic == NULL) 761 printf("(%u, ", r->return_icmp & 255); 762 else 763 printf("(%s, ", ic->name); 764 if (ic6 == NULL) 765 printf("%u)", r->return_icmp6 & 255); 766 else 767 printf("%s)", ic6->name); 768 break; 769 } 770 } else 771 printf(" drop"); 772 } 773 if (r->direction == PF_IN) 774 printf(" in"); 775 else if (r->direction == PF_OUT) 776 printf(" out"); 777 if (r->log) { 778 printf(" log"); 779 if (r->log & ~PF_LOG || r->logif) { 780 int count = 0; 781 782 printf(" ("); 783 if (r->log & PF_LOG_ALL) 784 printf("%sall", count++ ? ", " : ""); 785 if (r->log & PF_LOG_SOCKET_LOOKUP) 786 printf("%suser", count++ ? ", " : ""); 787 if (r->logif) 788 printf("%sto pflog%u", count++ ? ", " : "", 789 r->logif); 790 printf(")"); 791 } 792 } 793 if (r->quick) 794 printf(" quick"); 795 if (r->ifname[0]) { 796 if (r->ifnot) 797 printf(" on ! %s", r->ifname); 798 else 799 printf(" on %s", r->ifname); 800 } 801 if (r->rt) { 802 if (r->rt == PF_ROUTETO) 803 printf(" route-to"); 804 else if (r->rt == PF_REPLYTO) 805 printf(" reply-to"); 806 else if (r->rt == PF_DUPTO) 807 printf(" dup-to"); 808 else if (r->rt == PF_FASTROUTE) 809 printf(" fastroute"); 810 if (r->rt != PF_FASTROUTE) { 811 printf(" "); 812 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 813 } 814 } 815 if (r->af) { 816 if (r->af == AF_INET) 817 printf(" inet"); 818 else 819 printf(" inet6"); 820 } 821 if (r->proto) { 822 struct protoent *p; 823 824 if ((p = getprotobynumber(r->proto)) != NULL) 825 printf(" proto %s", p->p_name); 826 else 827 printf(" proto %u", r->proto); 828 } 829 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 830 verbose); 831 if (r->uid.op) 832 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 833 UID_MAX); 834 if (r->gid.op) 835 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 836 GID_MAX); 837 if (r->flags || r->flagset) { 838 printf(" flags "); 839 print_flags(r->flags); 840 printf("/"); 841 print_flags(r->flagset); 842 } else if (r->action == PF_PASS && 843 (!r->proto || r->proto == IPPROTO_TCP) && 844 !(r->rule_flag & PFRULE_FRAGMENT) && 845 !anchor_call[0] && r->keep_state) 846 printf(" flags any"); 847 if (r->type) { 848 const struct icmptypeent *it; 849 850 it = geticmptypebynumber(r->type-1, r->af); 851 if (r->af != AF_INET6) 852 printf(" icmp-type"); 853 else 854 printf(" icmp6-type"); 855 if (it != NULL) 856 printf(" %s", it->name); 857 else 858 printf(" %u", r->type-1); 859 if (r->code) { 860 const struct icmpcodeent *ic; 861 862 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 863 if (ic != NULL) 864 printf(" code %s", ic->name); 865 else 866 printf(" code %u", r->code-1); 867 } 868 } 869 if (r->tos) 870 printf(" tos 0x%2.2x", r->tos); 871 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 872 printf(" no state"); 873 else if (r->keep_state == PF_STATE_NORMAL) 874 printf(" keep state"); 875 else if (r->keep_state == PF_STATE_MODULATE) 876 printf(" modulate state"); 877 else if (r->keep_state == PF_STATE_SYNPROXY) 878 printf(" synproxy state"); 879 if (r->prob) { 880 char buf[20]; 881 882 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 883 for (i = strlen(buf)-1; i > 0; i--) { 884 if (buf[i] == '0') 885 buf[i] = '\0'; 886 else { 887 if (buf[i] == '.') 888 buf[i] = '\0'; 889 break; 890 } 891 } 892 printf(" probability %s%%", buf); 893 } 894 opts = 0; 895 if (r->max_states || r->max_src_nodes || r->max_src_states) 896 opts = 1; 897 if (r->rule_flag & PFRULE_NOSYNC) 898 opts = 1; 899 if (r->rule_flag & PFRULE_SRCTRACK) 900 opts = 1; 901 if (r->rule_flag & PFRULE_IFBOUND) 902 opts = 1; 903 for (i = 0; !opts && i < PFTM_MAX; ++i) 904 if (r->timeout[i]) 905 opts = 1; 906 if (opts) { 907 printf(" ("); 908 if (r->max_states) { 909 printf("max %u", r->max_states); 910 opts = 0; 911 } 912 if (r->rule_flag & PFRULE_NOSYNC) { 913 if (!opts) 914 printf(", "); 915 printf("no-sync"); 916 opts = 0; 917 } 918 if (r->rule_flag & PFRULE_SRCTRACK) { 919 if (!opts) 920 printf(", "); 921 printf("source-track"); 922 if (r->rule_flag & PFRULE_RULESRCTRACK) 923 printf(" rule"); 924 else 925 printf(" global"); 926 opts = 0; 927 } 928 if (r->max_src_states) { 929 if (!opts) 930 printf(", "); 931 printf("max-src-states %u", r->max_src_states); 932 opts = 0; 933 } 934 if (r->max_src_conn) { 935 if (!opts) 936 printf(", "); 937 printf("max-src-conn %u", r->max_src_conn); 938 opts = 0; 939 } 940 if (r->max_src_conn_rate.limit) { 941 if (!opts) 942 printf(", "); 943 printf("max-src-conn-rate %u/%u", 944 r->max_src_conn_rate.limit, 945 r->max_src_conn_rate.seconds); 946 opts = 0; 947 } 948 if (r->max_src_nodes) { 949 if (!opts) 950 printf(", "); 951 printf("max-src-nodes %u", r->max_src_nodes); 952 opts = 0; 953 } 954 if (r->overload_tblname[0]) { 955 if (!opts) 956 printf(", "); 957 printf("overload <%s>", r->overload_tblname); 958 if (r->flush) 959 printf(" flush"); 960 if (r->flush & PF_FLUSH_GLOBAL) 961 printf(" global"); 962 } 963 if (r->rule_flag & PFRULE_IFBOUND) { 964 if (!opts) 965 printf(", "); 966 printf("if-bound"); 967 opts = 0; 968 } 969 for (i = 0; i < PFTM_MAX; ++i) 970 if (r->timeout[i]) { 971 int j; 972 973 if (!opts) 974 printf(", "); 975 opts = 0; 976 for (j = 0; pf_timeouts[j].name != NULL; 977 ++j) 978 if (pf_timeouts[j].timeout == i) 979 break; 980 printf("%s %u", pf_timeouts[j].name == NULL ? 981 "inv.timeout" : pf_timeouts[j].name, 982 r->timeout[i]); 983 } 984 printf(")"); 985 } 986 if (r->rule_flag & PFRULE_FRAGMENT) 987 printf(" fragment"); 988 if (r->rule_flag & PFRULE_NODF) 989 printf(" no-df"); 990 if (r->rule_flag & PFRULE_RANDOMID) 991 printf(" random-id"); 992 if (r->min_ttl) 993 printf(" min-ttl %d", r->min_ttl); 994 if (r->max_mss) 995 printf(" max-mss %d", r->max_mss); 996 if (r->allow_opts) 997 printf(" allow-opts"); 998 if (r->action == PF_SCRUB) { 999 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1000 printf(" reassemble tcp"); 1001 1002 if (r->rule_flag & PFRULE_FRAGDROP) 1003 printf(" fragment drop-ovl"); 1004 else if (r->rule_flag & PFRULE_FRAGCROP) 1005 printf(" fragment crop"); 1006 else 1007 printf(" fragment reassemble"); 1008 } 1009 if (r->label[0]) 1010 printf(" label \"%s\"", r->label); 1011 if (r->qname[0] && r->pqname[0]) 1012 printf(" queue(%s, %s)", r->qname, r->pqname); 1013 else if (r->qname[0]) 1014 printf(" queue %s", r->qname); 1015 if (r->tagname[0]) 1016 printf(" tag %s", r->tagname); 1017 if (r->match_tagname[0]) { 1018 if (r->match_tag_not) 1019 printf(" !"); 1020 printf(" tagged %s", r->match_tagname); 1021 } 1022 if (r->rtableid != -1) 1023 printf(" rtable %u", r->rtableid); 1024 if (!anchor_call[0] && (r->action == PF_NAT || 1025 r->action == PF_BINAT || r->action == PF_RDR)) { 1026 printf(" -> "); 1027 print_pool(&r->rpool, r->rpool.proxy_port[0], 1028 r->rpool.proxy_port[1], r->af, r->action); 1029 } 1030 } 1031 1032 void 1033 print_tabledef(const char *name, int flags, int addrs, 1034 struct node_tinithead *nodes) 1035 { 1036 struct node_tinit *ti, *nti; 1037 struct node_host *h; 1038 1039 printf("table <%s>", name); 1040 if (flags & PFR_TFLAG_CONST) 1041 printf(" const"); 1042 if (flags & PFR_TFLAG_PERSIST) 1043 printf(" persist"); 1044 SIMPLEQ_FOREACH(ti, nodes, entries) { 1045 if (ti->file) { 1046 printf(" file \"%s\"", ti->file); 1047 continue; 1048 } 1049 printf(" {"); 1050 for (;;) { 1051 for (h = ti->host; h != NULL; h = h->next) { 1052 printf(h->not ? " !" : " "); 1053 print_addr(&h->addr, h->af, 0); 1054 } 1055 nti = SIMPLEQ_NEXT(ti, entries); 1056 if (nti != NULL && nti->file == NULL) 1057 ti = nti; /* merge lists */ 1058 else 1059 break; 1060 } 1061 printf(" }"); 1062 } 1063 if (addrs && SIMPLEQ_EMPTY(nodes)) 1064 printf(" { }"); 1065 printf("\n"); 1066 } 1067 1068 int 1069 parse_flags(char *s) 1070 { 1071 char *p, *q; 1072 u_int8_t f = 0; 1073 1074 for (p = s; *p; p++) { 1075 if ((q = strchr(tcpflags, *p)) == NULL) 1076 return -1; 1077 else 1078 f |= 1 << (q - tcpflags); 1079 } 1080 return (f ? f : PF_TH_ALL); 1081 } 1082 1083 void 1084 set_ipmask(struct node_host *h, u_int8_t b) 1085 { 1086 struct pf_addr *m, *n; 1087 int i, j = 0; 1088 1089 m = &h->addr.v.a.mask; 1090 memset(m, 0, sizeof(*m)); 1091 1092 while (b >= 32) { 1093 m->addr32[j++] = 0xffffffff; 1094 b -= 32; 1095 } 1096 for (i = 31; i > 31-b; --i) 1097 m->addr32[j] |= (1 << i); 1098 if (b) 1099 m->addr32[j] = htonl(m->addr32[j]); 1100 1101 /* Mask off bits of the address that will never be used. */ 1102 n = &h->addr.v.a.addr; 1103 if (h->addr.type == PF_ADDR_ADDRMASK) 1104 for (i = 0; i < 4; i++) 1105 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1106 } 1107 1108 int 1109 check_netmask(struct node_host *h, sa_family_t af) 1110 { 1111 struct node_host *n = NULL; 1112 struct pf_addr *m; 1113 1114 for (n = h; n != NULL; n = n->next) { 1115 if (h->addr.type == PF_ADDR_TABLE) 1116 continue; 1117 m = &h->addr.v.a.mask; 1118 /* fix up netmask for dynaddr */ 1119 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1120 unmask(m, AF_INET6) > 32) 1121 set_ipmask(n, 32); 1122 /* netmasks > 32 bit are invalid on v4 */ 1123 if (af == AF_INET && 1124 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1125 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1126 unmask(m, AF_INET6)); 1127 return (1); 1128 } 1129 } 1130 return (0); 1131 } 1132 1133 /* interface lookup routines */ 1134 1135 struct node_host *iftab; 1136 1137 void 1138 ifa_load(void) 1139 { 1140 struct ifaddrs *ifap, *ifa; 1141 struct node_host *n = NULL, *h = NULL; 1142 1143 if (getifaddrs(&ifap) < 0) 1144 err(1, "getifaddrs"); 1145 1146 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1147 if (!(ifa->ifa_addr->sa_family == AF_INET || 1148 ifa->ifa_addr->sa_family == AF_INET6 || 1149 ifa->ifa_addr->sa_family == AF_LINK)) 1150 continue; 1151 n = calloc(1, sizeof(struct node_host)); 1152 if (n == NULL) 1153 err(1, "address: calloc"); 1154 n->af = ifa->ifa_addr->sa_family; 1155 n->ifa_flags = ifa->ifa_flags; 1156 #ifdef __KAME__ 1157 if (n->af == AF_INET6 && 1158 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1159 ifa->ifa_addr)->sin6_addr) && 1160 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1161 0) { 1162 struct sockaddr_in6 *sin6; 1163 1164 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1165 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1166 sin6->sin6_addr.s6_addr[3]; 1167 sin6->sin6_addr.s6_addr[2] = 0; 1168 sin6->sin6_addr.s6_addr[3] = 0; 1169 } 1170 #endif 1171 n->ifindex = 0; 1172 if (n->af == AF_INET) { 1173 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1174 ifa->ifa_addr)->sin_addr.s_addr, 1175 sizeof(struct in_addr)); 1176 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1177 ifa->ifa_netmask)->sin_addr.s_addr, 1178 sizeof(struct in_addr)); 1179 if (ifa->ifa_broadaddr != NULL) 1180 memcpy(&n->bcast, &((struct sockaddr_in *) 1181 ifa->ifa_broadaddr)->sin_addr.s_addr, 1182 sizeof(struct in_addr)); 1183 if (ifa->ifa_dstaddr != NULL) 1184 memcpy(&n->peer, &((struct sockaddr_in *) 1185 ifa->ifa_dstaddr)->sin_addr.s_addr, 1186 sizeof(struct in_addr)); 1187 } else if (n->af == AF_INET6) { 1188 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1189 ifa->ifa_addr)->sin6_addr.s6_addr, 1190 sizeof(struct in6_addr)); 1191 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1192 ifa->ifa_netmask)->sin6_addr.s6_addr, 1193 sizeof(struct in6_addr)); 1194 if (ifa->ifa_broadaddr != NULL) 1195 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1196 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1197 sizeof(struct in6_addr)); 1198 if (ifa->ifa_dstaddr != NULL) 1199 memcpy(&n->peer, &((struct sockaddr_in6 *) 1200 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1201 sizeof(struct in6_addr)); 1202 n->ifindex = ((struct sockaddr_in6 *) 1203 ifa->ifa_addr)->sin6_scope_id; 1204 } 1205 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1206 err(1, "ifa_load: strdup"); 1207 n->next = NULL; 1208 n->tail = n; 1209 if (h == NULL) 1210 h = n; 1211 else { 1212 h->tail->next = n; 1213 h->tail = n; 1214 } 1215 } 1216 1217 iftab = h; 1218 freeifaddrs(ifap); 1219 } 1220 1221 struct node_host * 1222 ifa_exists(const char *ifa_name) 1223 { 1224 struct node_host *n; 1225 #ifndef __NetBSD__ 1226 struct ifgroupreq ifgr; 1227 int s; 1228 #endif /* !__NetBSD__ */ 1229 1230 if (iftab == NULL) 1231 ifa_load(); 1232 1233 /* check whether this is a group */ 1234 #ifndef __NetBSD__ 1235 /* XXXPF TODO investigate what's needed for NetBSD */ 1236 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) 1237 err(1, "socket"); 1238 bzero(&ifgr, sizeof(ifgr)); 1239 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1240 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == 0) { 1241 /* fake a node_host */ 1242 if ((n = calloc(1, sizeof(*n))) == NULL) 1243 err(1, "calloc"); 1244 if ((n->ifname = strdup(ifa_name)) == NULL) 1245 err(1, "strdup"); 1246 close(s); 1247 return (n); 1248 } 1249 close(s); 1250 #endif /* !__NetBSD__ */ 1251 1252 for (n = iftab; n; n = n->next) { 1253 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1254 return (n); 1255 } 1256 1257 return (NULL); 1258 } 1259 1260 struct node_host * 1261 ifa_grouplookup(const char *ifa_name, int flags) 1262 { 1263 #ifdef __NetBSD__ 1264 /* XXXPF TODO investigate what's needed for NetBSD */ 1265 1266 return (NULL); 1267 #else 1268 struct ifg_req *ifg; 1269 struct ifgroupreq ifgr; 1270 int s, len; 1271 struct node_host *n, *h = NULL; 1272 1273 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) 1274 err(1, "socket"); 1275 bzero(&ifgr, sizeof(ifgr)); 1276 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1277 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) { 1278 close(s); 1279 return (NULL); 1280 } 1281 1282 len = ifgr.ifgr_len; 1283 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1284 err(1, "calloc"); 1285 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1286 err(1, "SIOCGIFGMEMB"); 1287 1288 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1289 ifg++) { 1290 len -= sizeof(struct ifg_req); 1291 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1292 continue; 1293 if (h == NULL) 1294 h = n; 1295 else { 1296 h->tail->next = n; 1297 h->tail = n->tail; 1298 } 1299 } 1300 free(ifgr.ifgr_groups); 1301 close(s); 1302 1303 return (h); 1304 #endif /* !__NetBSD__ */ 1305 } 1306 1307 struct node_host * 1308 ifa_lookup(const char *ifa_name, int flags) 1309 { 1310 struct node_host *p = NULL, *h = NULL, *n = NULL; 1311 int got4 = 0, got6 = 0; 1312 const char *last_if = NULL; 1313 1314 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1315 return (h); 1316 1317 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1318 ifa_name = NULL; 1319 1320 if (iftab == NULL) 1321 ifa_load(); 1322 1323 for (p = iftab; p; p = p->next) { 1324 if (ifa_skip_if(ifa_name, p)) 1325 continue; 1326 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1327 continue; 1328 if ((flags & PFI_AFLAG_BROADCAST) && 1329 !(p->ifa_flags & IFF_BROADCAST)) 1330 continue; 1331 if ((flags & PFI_AFLAG_PEER) && 1332 !(p->ifa_flags & IFF_POINTOPOINT)) 1333 continue; 1334 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1335 continue; 1336 if (last_if == NULL || strcmp(last_if, p->ifname)) 1337 got4 = got6 = 0; 1338 last_if = p->ifname; 1339 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1340 continue; 1341 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1342 continue; 1343 if (p->af == AF_INET) 1344 got4 = 1; 1345 else 1346 got6 = 1; 1347 n = calloc(1, sizeof(struct node_host)); 1348 if (n == NULL) 1349 err(1, "address: calloc"); 1350 n->af = p->af; 1351 if (flags & PFI_AFLAG_BROADCAST) 1352 memcpy(&n->addr.v.a.addr, &p->bcast, 1353 sizeof(struct pf_addr)); 1354 else if (flags & PFI_AFLAG_PEER) 1355 memcpy(&n->addr.v.a.addr, &p->peer, 1356 sizeof(struct pf_addr)); 1357 else 1358 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1359 sizeof(struct pf_addr)); 1360 if (flags & PFI_AFLAG_NETWORK) 1361 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1362 else { 1363 if (n->af == AF_INET) { 1364 if (p->ifa_flags & IFF_LOOPBACK && 1365 p->ifa_flags & IFF_LINK1) 1366 memcpy(&n->addr.v.a.mask, 1367 &p->addr.v.a.mask, 1368 sizeof(struct pf_addr)); 1369 else 1370 set_ipmask(n, 32); 1371 } else 1372 set_ipmask(n, 128); 1373 } 1374 n->ifindex = p->ifindex; 1375 1376 n->next = NULL; 1377 n->tail = n; 1378 if (h == NULL) 1379 h = n; 1380 else { 1381 h->tail->next = n; 1382 h->tail = n; 1383 } 1384 } 1385 return (h); 1386 } 1387 1388 int 1389 ifa_skip_if(const char *filter, struct node_host *p) 1390 { 1391 int n; 1392 1393 if (p->af != AF_INET && p->af != AF_INET6) 1394 return (1); 1395 if (filter == NULL || !*filter) 1396 return (0); 1397 if (!strcmp(p->ifname, filter)) 1398 return (0); /* exact match */ 1399 n = strlen(filter); 1400 if (n < 1 || n >= IFNAMSIZ) 1401 return (1); /* sanity check */ 1402 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1403 return (1); /* only do exact match in that case */ 1404 if (strncmp(p->ifname, filter, n)) 1405 return (1); /* prefix doesn't match */ 1406 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1407 } 1408 1409 1410 struct node_host * 1411 host(const char *s) 1412 { 1413 struct node_host *h = NULL; 1414 int mask, v4mask, v6mask, cont = 1; 1415 char *p, *q, *ps; 1416 1417 if ((p = strrchr(s, '/')) != NULL) { 1418 mask = strtol(p+1, &q, 0); 1419 if (!q || *q || mask > 128 || q == (p+1)) { 1420 fprintf(stderr, "invalid netmask '%s'\n", p); 1421 return (NULL); 1422 } 1423 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1424 err(1, "host: malloc"); 1425 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1426 v4mask = v6mask = mask; 1427 } else { 1428 if ((ps = strdup(s)) == NULL) 1429 err(1, "host: strdup"); 1430 v4mask = 32; 1431 v6mask = 128; 1432 mask = -1; 1433 } 1434 1435 /* interface with this name exists? */ 1436 if (cont && (h = host_if(ps, mask)) != NULL) 1437 cont = 0; 1438 1439 /* IPv4 address? */ 1440 if (cont && (h = host_v4(s, mask)) != NULL) 1441 cont = 0; 1442 1443 /* IPv6 address? */ 1444 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1445 cont = 0; 1446 1447 /* dns lookup */ 1448 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1449 cont = 0; 1450 free(ps); 1451 1452 if (h == NULL || cont == 1) { 1453 fprintf(stderr, "no IP address found for %s\n", s); 1454 return (NULL); 1455 } 1456 return (h); 1457 } 1458 1459 struct node_host * 1460 host_if(const char *s, int mask) 1461 { 1462 struct node_host *n, *h = NULL; 1463 char *p, *ps; 1464 int flags = 0; 1465 1466 if ((ps = strdup(s)) == NULL) 1467 err(1, "host_if: strdup"); 1468 while ((p = strrchr(ps, ':')) != NULL) { 1469 if (!strcmp(p+1, "network")) 1470 flags |= PFI_AFLAG_NETWORK; 1471 else if (!strcmp(p+1, "broadcast")) 1472 flags |= PFI_AFLAG_BROADCAST; 1473 else if (!strcmp(p+1, "peer")) 1474 flags |= PFI_AFLAG_PEER; 1475 else if (!strcmp(p+1, "0")) 1476 flags |= PFI_AFLAG_NOALIAS; 1477 else { 1478 free(ps); 1479 return (NULL); 1480 } 1481 *p = '\0'; 1482 } 1483 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1484 fprintf(stderr, "illegal combination of interface modifiers\n"); 1485 free(ps); 1486 return (NULL); 1487 } 1488 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1489 fprintf(stderr, "network or broadcast lookup, but " 1490 "extra netmask given\n"); 1491 free(ps); 1492 return (NULL); 1493 } 1494 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1495 /* interface with this name exists */ 1496 h = ifa_lookup(ps, flags); 1497 for (n = h; n != NULL && mask > -1; n = n->next) 1498 set_ipmask(n, mask); 1499 } 1500 1501 free(ps); 1502 return (h); 1503 } 1504 1505 struct node_host * 1506 host_v4(const char *s, int mask) 1507 { 1508 struct node_host *h = NULL; 1509 struct in_addr ina; 1510 int bits = 32; 1511 1512 memset(&ina, 0, sizeof(struct in_addr)); 1513 if (strrchr(s, '/') != NULL) { 1514 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1515 return (NULL); 1516 } else { 1517 if (inet_pton(AF_INET, s, &ina) != 1) 1518 return (NULL); 1519 } 1520 1521 h = calloc(1, sizeof(struct node_host)); 1522 if (h == NULL) 1523 err(1, "address: calloc"); 1524 h->ifname = NULL; 1525 h->af = AF_INET; 1526 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1527 set_ipmask(h, bits); 1528 h->next = NULL; 1529 h->tail = h; 1530 1531 return (h); 1532 } 1533 1534 struct node_host * 1535 host_v6(const char *s, int mask) 1536 { 1537 struct addrinfo hints, *res; 1538 struct node_host *h = NULL; 1539 1540 memset(&hints, 0, sizeof(hints)); 1541 hints.ai_family = AF_INET6; 1542 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1543 hints.ai_flags = AI_NUMERICHOST; 1544 if (getaddrinfo(s, "0", &hints, &res) == 0) { 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_INET6; 1550 memcpy(&h->addr.v.a.addr, 1551 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1552 sizeof(h->addr.v.a.addr)); 1553 h->ifindex = 1554 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1555 set_ipmask(h, mask); 1556 freeaddrinfo(res); 1557 h->next = NULL; 1558 h->tail = h; 1559 } 1560 1561 return (h); 1562 } 1563 1564 struct node_host * 1565 host_dns(const char *s, int v4mask, int v6mask) 1566 { 1567 struct addrinfo hints, *res0, *res; 1568 struct node_host *n, *h = NULL; 1569 int error, noalias = 0; 1570 int got4 = 0, got6 = 0; 1571 char *p, *ps; 1572 1573 if ((ps = strdup(s)) == NULL) 1574 err(1, "host_dns: strdup"); 1575 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1576 noalias = 1; 1577 *p = '\0'; 1578 } 1579 memset(&hints, 0, sizeof(hints)); 1580 hints.ai_family = PF_UNSPEC; 1581 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1582 error = getaddrinfo(ps, NULL, &hints, &res0); 1583 if (error) { 1584 free(ps); 1585 return (h); 1586 } 1587 1588 for (res = res0; res; res = res->ai_next) { 1589 if (res->ai_family != AF_INET && 1590 res->ai_family != AF_INET6) 1591 continue; 1592 if (noalias) { 1593 if (res->ai_family == AF_INET) { 1594 if (got4) 1595 continue; 1596 got4 = 1; 1597 } else { 1598 if (got6) 1599 continue; 1600 got6 = 1; 1601 } 1602 } 1603 n = calloc(1, sizeof(struct node_host)); 1604 if (n == NULL) 1605 err(1, "host_dns: calloc"); 1606 n->ifname = NULL; 1607 n->af = res->ai_family; 1608 if (res->ai_family == AF_INET) { 1609 memcpy(&n->addr.v.a.addr, 1610 &((struct sockaddr_in *) 1611 res->ai_addr)->sin_addr.s_addr, 1612 sizeof(struct in_addr)); 1613 set_ipmask(n, v4mask); 1614 } else { 1615 memcpy(&n->addr.v.a.addr, 1616 &((struct sockaddr_in6 *) 1617 res->ai_addr)->sin6_addr.s6_addr, 1618 sizeof(struct in6_addr)); 1619 n->ifindex = 1620 ((struct sockaddr_in6 *) 1621 res->ai_addr)->sin6_scope_id; 1622 set_ipmask(n, v6mask); 1623 } 1624 n->next = NULL; 1625 n->tail = n; 1626 if (h == NULL) 1627 h = n; 1628 else { 1629 h->tail->next = n; 1630 h->tail = n; 1631 } 1632 } 1633 freeaddrinfo(res0); 1634 free(ps); 1635 1636 return (h); 1637 } 1638 1639 /* 1640 * convert a hostname to a list of addresses and put them in the given buffer. 1641 * test: 1642 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1643 */ 1644 int 1645 append_addr(struct pfr_buffer *b, char *s, int test) 1646 { 1647 char *r; 1648 struct node_host *h, *n; 1649 int rv, not = 0; 1650 1651 for (r = s; *r == '!'; r++) 1652 not = !not; 1653 if ((n = host(r)) == NULL) { 1654 errno = 0; 1655 return (-1); 1656 } 1657 rv = append_addr_host(b, n, test, not); 1658 do { 1659 h = n; 1660 n = n->next; 1661 free(h); 1662 } while (n != NULL); 1663 return (rv); 1664 } 1665 1666 /* 1667 * same as previous function, but with a pre-parsed input and the ability 1668 * to "negate" the result. Does not free the node_host list. 1669 * not: 1670 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1671 */ 1672 int 1673 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1674 { 1675 int bits; 1676 struct pfr_addr addr; 1677 1678 do { 1679 bzero(&addr, sizeof(addr)); 1680 addr.pfra_not = n->not ^ not; 1681 addr.pfra_af = n->af; 1682 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1683 switch (n->af) { 1684 case AF_INET: 1685 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1686 bits = 32; 1687 break; 1688 case AF_INET6: 1689 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1690 sizeof(struct in6_addr)); 1691 bits = 128; 1692 break; 1693 default: 1694 errno = EINVAL; 1695 return (-1); 1696 } 1697 if ((test && (not || addr.pfra_net != bits)) || 1698 addr.pfra_net > bits) { 1699 errno = EINVAL; 1700 return (-1); 1701 } 1702 if (pfr_buf_add(b, &addr)) 1703 return (-1); 1704 } while ((n = n->next) != NULL); 1705 1706 return (0); 1707 } 1708 1709 int 1710 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1711 { 1712 struct pfioc_trans_e trans; 1713 1714 bzero(&trans, sizeof(trans)); 1715 trans.rs_num = rs_num; 1716 if (strlcpy(trans.anchor, anchor, 1717 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1718 errx(1, "pfctl_add_trans: strlcpy"); 1719 1720 return pfr_buf_add(buf, &trans); 1721 } 1722 1723 u_int32_t 1724 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1725 { 1726 struct pfioc_trans_e *p; 1727 1728 PFRB_FOREACH(p, buf) 1729 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1730 return (p->ticket); 1731 errx(1, "pfctl_get_ticket: assertion failed"); 1732 } 1733 1734 int 1735 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1736 { 1737 struct pfioc_trans trans; 1738 1739 bzero(&trans, sizeof(trans)); 1740 trans.size = buf->pfrb_size - from; 1741 trans.esize = sizeof(struct pfioc_trans_e); 1742 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1743 return ioctl(dev, cmd, &trans); 1744 } 1745
Indexes created Sun Sep 21 15:09:59 GMT 2025