1 /* $NetBSD: pfctl_parser.c,v 1.9 2006/07/03 20:26:19 peter Exp $ */ 2 /* $OpenBSD: pfctl_parser.c,v 1.211 2004/12/07 10:33:41 dhartmei 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 #ifdef __NetBSD__ 58 #include <limits.h> 59 #endif 60 61 #include "pfctl_parser.h" 62 #include "pfctl.h" 63 64 void print_op (u_int8_t, const char *, const char *); 65 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *); 66 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned); 67 void print_flags (u_int8_t); 68 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 69 struct pf_rule_addr *, u_int8_t, u_int8_t, int); 70 int ifa_skip_if(const char *filter, struct node_host *p); 71 72 struct node_host *host_if(const char *, int); 73 struct node_host *host_v4(const char *, int); 74 struct node_host *host_v6(const char *, int); 75 struct node_host *host_dns(const char *, int, int); 76 77 const char *tcpflags = "FSRPAUEW"; 78 79 static const struct icmptypeent icmp_type[] = { 80 { "echoreq", ICMP_ECHO }, 81 { "echorep", ICMP_ECHOREPLY }, 82 { "unreach", ICMP_UNREACH }, 83 { "squench", ICMP_SOURCEQUENCH }, 84 { "redir", ICMP_REDIRECT }, 85 #ifdef ICMP_ALTHOSTADDR 86 { "althost", ICMP_ALTHOSTADDR }, 87 #endif 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 #ifdef ICMP_TRACEROUTE 99 { "trace", ICMP_TRACEROUTE }, 100 #endif 101 #ifdef ICMP_DATACONVERR 102 { "dataconv", ICMP_DATACONVERR }, 103 #endif 104 #ifdef ICMP_MOBILE_REDIRECT 105 { "mobredir", ICMP_MOBILE_REDIRECT }, 106 #endif 107 #ifdef ICMP_IPV6_WHEREAREYOU 108 { "ipv6-where", ICMP_IPV6_WHEREAREYOU }, 109 #endif 110 #ifdef ICMP_IPV6_IAMHERE 111 { "ipv6-here", ICMP_IPV6_IAMHERE }, 112 #endif 113 #ifdef ICMP_MOBILE_REGREQUEST 114 { "mobregreq", ICMP_MOBILE_REGREQUEST }, 115 #endif 116 #ifdef ICMP_MOBILE_REGREPLY 117 { "mobregrep", ICMP_MOBILE_REGREPLY }, 118 #endif 119 #ifdef ICMP_SKIP 120 { "skip", ICMP_SKIP }, 121 #endif 122 #ifdef ICMP_PHOTURIS 123 { "photuris", ICMP_PHOTURIS } 124 #endif 125 }; 126 127 static const struct icmptypeent icmp6_type[] = { 128 { "unreach", ICMP6_DST_UNREACH }, 129 { "toobig", ICMP6_PACKET_TOO_BIG }, 130 { "timex", ICMP6_TIME_EXCEEDED }, 131 { "paramprob", ICMP6_PARAM_PROB }, 132 { "echoreq", ICMP6_ECHO_REQUEST }, 133 { "echorep", ICMP6_ECHO_REPLY }, 134 { "groupqry", ICMP6_MEMBERSHIP_QUERY }, 135 { "listqry", MLD_LISTENER_QUERY }, 136 { "grouprep", ICMP6_MEMBERSHIP_REPORT }, 137 { "listenrep", MLD_LISTENER_REPORT }, 138 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION }, 139 { "listendone", MLD_LISTENER_DONE }, 140 { "routersol", ND_ROUTER_SOLICIT }, 141 { "routeradv", ND_ROUTER_ADVERT }, 142 { "neighbrsol", ND_NEIGHBOR_SOLICIT }, 143 { "neighbradv", ND_NEIGHBOR_ADVERT }, 144 { "redir", ND_REDIRECT }, 145 { "routrrenum", ICMP6_ROUTER_RENUMBERING }, 146 { "wrureq", ICMP6_WRUREQUEST }, 147 { "wrurep", ICMP6_WRUREPLY }, 148 { "fqdnreq", ICMP6_FQDN_QUERY }, 149 { "fqdnrep", ICMP6_FQDN_REPLY }, 150 { "niqry", ICMP6_NI_QUERY }, 151 { "nirep", ICMP6_NI_REPLY }, 152 { "mtraceresp", MLD_MTRACE_RESP }, 153 { "mtrace", MLD_MTRACE } 154 }; 155 156 static const struct icmpcodeent icmp_code[] = { 157 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET }, 158 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST }, 159 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL }, 160 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT }, 161 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG }, 162 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL }, 163 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN }, 164 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN }, 165 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED }, 166 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB }, 167 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB }, 168 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET }, 169 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST }, 170 #ifdef ICMP_UNREACH_FILTER_PROHIB 171 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB }, 172 #endif 173 #ifdef ICMP_UNREACH_HOST_PRECEDENCE 174 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE }, 175 #endif 176 #ifdef ICMP_UNREACH_PRECEDENCE_CUTOFF 177 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF }, 178 #endif 179 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET }, 180 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST }, 181 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET }, 182 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST }, 183 #ifdef ICMP_ROUTERADVERT_NORMAL 184 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL }, 185 #endif 186 #ifdef ICMP_ROUTERADVERT_NOROUTE_COMMON 187 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON }, 188 #endif 189 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS }, 190 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS }, 191 #ifdef ICMP_PARAMPROB_ERRATPTR 192 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR }, 193 #endif 194 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT }, 195 #ifdef ICMP_PARAMPROB_LENGTH 196 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH }, 197 #endif 198 #ifdef ICMP_PHOTURIS 199 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX }, 200 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED }, 201 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED } 202 #endif 203 }; 204 205 static const struct icmpcodeent icmp6_code[] = { 206 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN }, 207 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE }, 208 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR }, 209 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE }, 210 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR }, 211 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT }, 212 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT }, 213 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY }, 214 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER }, 215 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER }, 216 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK }, 217 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER } 218 }; 219 220 const struct pf_timeout pf_timeouts[] = { 221 { "tcp.first", PFTM_TCP_FIRST_PACKET }, 222 { "tcp.opening", PFTM_TCP_OPENING }, 223 { "tcp.established", PFTM_TCP_ESTABLISHED }, 224 { "tcp.closing", PFTM_TCP_CLOSING }, 225 { "tcp.finwait", PFTM_TCP_FIN_WAIT }, 226 { "tcp.closed", PFTM_TCP_CLOSED }, 227 { "tcp.tsdiff", PFTM_TS_DIFF }, 228 { "udp.first", PFTM_UDP_FIRST_PACKET }, 229 { "udp.single", PFTM_UDP_SINGLE }, 230 { "udp.multiple", PFTM_UDP_MULTIPLE }, 231 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 232 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 233 { "other.first", PFTM_OTHER_FIRST_PACKET }, 234 { "other.single", PFTM_OTHER_SINGLE }, 235 { "other.multiple", PFTM_OTHER_MULTIPLE }, 236 { "frag", PFTM_FRAG }, 237 { "interval", PFTM_INTERVAL }, 238 { "adaptive.start", PFTM_ADAPTIVE_START }, 239 { "adaptive.end", PFTM_ADAPTIVE_END }, 240 { "src.track", PFTM_SRC_NODE }, 241 { NULL, 0 } 242 }; 243 244 const struct icmptypeent * 245 geticmptypebynumber(u_int8_t type, sa_family_t af) 246 { 247 unsigned int i; 248 249 if (af != AF_INET6) { 250 for (i=0; i < (sizeof (icmp_type) / sizeof(icmp_type[0])); 251 i++) { 252 if (type == icmp_type[i].type) 253 return (&icmp_type[i]); 254 } 255 } else { 256 for (i=0; i < (sizeof (icmp6_type) / 257 sizeof(icmp6_type[0])); i++) { 258 if (type == icmp6_type[i].type) 259 return (&icmp6_type[i]); 260 } 261 } 262 return (NULL); 263 } 264 265 const struct icmptypeent * 266 geticmptypebyname(char *w, sa_family_t af) 267 { 268 unsigned int i; 269 270 if (af != AF_INET6) { 271 for (i=0; i < (sizeof (icmp_type) / sizeof(icmp_type[0])); 272 i++) { 273 if (!strcmp(w, icmp_type[i].name)) 274 return (&icmp_type[i]); 275 } 276 } else { 277 for (i=0; i < (sizeof (icmp6_type) / 278 sizeof(icmp6_type[0])); i++) { 279 if (!strcmp(w, icmp6_type[i].name)) 280 return (&icmp6_type[i]); 281 } 282 } 283 return (NULL); 284 } 285 286 const struct icmpcodeent * 287 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 288 { 289 unsigned int i; 290 291 if (af != AF_INET6) { 292 for (i=0; i < (sizeof (icmp_code) / sizeof(icmp_code[0])); 293 i++) { 294 if (type == icmp_code[i].type && 295 code == icmp_code[i].code) 296 return (&icmp_code[i]); 297 } 298 } else { 299 for (i=0; i < (sizeof (icmp6_code) / 300 sizeof(icmp6_code[0])); i++) { 301 if (type == icmp6_code[i].type && 302 code == icmp6_code[i].code) 303 return (&icmp6_code[i]); 304 } 305 } 306 return (NULL); 307 } 308 309 const struct icmpcodeent * 310 geticmpcodebyname(u_long type, char *w, sa_family_t af) 311 { 312 unsigned int i; 313 314 if (af != AF_INET6) { 315 for (i=0; i < (sizeof (icmp_code) / sizeof(icmp_code[0])); 316 i++) { 317 if (type == icmp_code[i].type && 318 !strcmp(w, icmp_code[i].name)) 319 return (&icmp_code[i]); 320 } 321 } else { 322 for (i=0; i < (sizeof (icmp6_code) / 323 sizeof(icmp6_code[0])); i++) { 324 if (type == icmp6_code[i].type && 325 !strcmp(w, icmp6_code[i].name)) 326 return (&icmp6_code[i]); 327 } 328 } 329 return (NULL); 330 } 331 332 void 333 print_op(u_int8_t op, const char *a1, const char *a2) 334 { 335 if (op == PF_OP_IRG) 336 printf(" %s >< %s", a1, a2); 337 else if (op == PF_OP_XRG) 338 printf(" %s <> %s", a1, a2); 339 else if (op == PF_OP_EQ) 340 printf(" = %s", a1); 341 else if (op == PF_OP_NE) 342 printf(" != %s", a1); 343 else if (op == PF_OP_LT) 344 printf(" < %s", a1); 345 else if (op == PF_OP_LE) 346 printf(" <= %s", a1); 347 else if (op == PF_OP_GT) 348 printf(" > %s", a1); 349 else if (op == PF_OP_GE) 350 printf(" >= %s", a1); 351 else if (op == PF_OP_RRG) 352 printf(" %s:%s", a1, a2); 353 } 354 355 void 356 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto) 357 { 358 char a1[6], a2[6]; 359 struct servent *s; 360 361 s = getservbyport(p1, proto); 362 p1 = ntohs(p1); 363 p2 = ntohs(p2); 364 snprintf(a1, sizeof(a1), "%u", p1); 365 snprintf(a2, sizeof(a2), "%u", p2); 366 printf(" port"); 367 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 368 print_op(op, s->s_name, a2); 369 else 370 print_op(op, a1, a2); 371 } 372 373 void 374 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 375 { 376 char a1[11], a2[11]; 377 378 snprintf(a1, sizeof(a1), "%u", u1); 379 snprintf(a2, sizeof(a2), "%u", u2); 380 printf(" %s", t); 381 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 382 print_op(op, "unknown", a2); 383 else 384 print_op(op, a1, a2); 385 } 386 387 void 388 print_flags(u_int8_t f) 389 { 390 int i; 391 392 for (i = 0; tcpflags[i]; ++i) 393 if (f & (1 << i)) 394 printf("%c", tcpflags[i]); 395 } 396 397 void 398 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 399 sa_family_t af, u_int8_t proto, int verbose) 400 { 401 char buf[PF_OSFP_LEN*3]; 402 if (src->addr.type == PF_ADDR_ADDRMASK && 403 dst->addr.type == PF_ADDR_ADDRMASK && 404 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 405 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 406 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 407 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 408 !src->neg && !dst->neg && 409 !src->port_op && !dst->port_op && 410 osfp == PF_OSFP_ANY) 411 printf(" all"); 412 else { 413 printf(" from "); 414 if (src->neg) 415 printf("! "); 416 print_addr(&src->addr, af, verbose); 417 if (src->port_op) 418 print_port(src->port_op, src->port[0], 419 src->port[1], 420 proto == IPPROTO_TCP ? "tcp" : "udp"); 421 if (osfp != PF_OSFP_ANY) 422 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 423 sizeof(buf))); 424 425 printf(" to "); 426 if (dst->neg) 427 printf("! "); 428 print_addr(&dst->addr, af, verbose); 429 if (dst->port_op) 430 print_port(dst->port_op, dst->port[0], 431 dst->port[1], 432 proto == IPPROTO_TCP ? "tcp" : "udp"); 433 } 434 } 435 436 void 437 print_pool(struct pf_pool *pool, u_int16_t p1, u_int16_t p2, 438 sa_family_t af, int id) 439 { 440 struct pf_pooladdr *pooladdr; 441 442 if ((TAILQ_FIRST(&pool->list) != NULL) && 443 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 444 printf("{ "); 445 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 446 switch (id) { 447 case PF_NAT: 448 case PF_RDR: 449 case PF_BINAT: 450 print_addr(&pooladdr->addr, af, 0); 451 break; 452 case PF_PASS: 453 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 454 printf("%s", pooladdr->ifname); 455 else { 456 printf("(%s ", pooladdr->ifname); 457 print_addr(&pooladdr->addr, af, 0); 458 printf(")"); 459 } 460 break; 461 default: 462 break; 463 } 464 if (TAILQ_NEXT(pooladdr, entries) != NULL) 465 printf(", "); 466 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 467 printf(" }"); 468 } 469 switch (id) { 470 case PF_NAT: 471 if ((p1 != PF_NAT_PROXY_PORT_LOW || 472 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 473 if (p1 == p2) 474 printf(" port %u", p1); 475 else 476 printf(" port %u:%u", p1, p2); 477 } 478 break; 479 case PF_RDR: 480 if (p1) { 481 printf(" port %u", p1); 482 if (p2 && (p2 != p1)) 483 printf(":%u", p2); 484 } 485 break; 486 default: 487 break; 488 } 489 switch (pool->opts & PF_POOL_TYPEMASK) { 490 case PF_POOL_NONE: 491 break; 492 case PF_POOL_BITMASK: 493 printf(" bitmask"); 494 break; 495 case PF_POOL_RANDOM: 496 printf(" random"); 497 break; 498 case PF_POOL_SRCHASH: 499 printf(" source-hash 0x%08x%08x%08x%08x", 500 pool->key.key32[0], pool->key.key32[1], 501 pool->key.key32[2], pool->key.key32[3]); 502 break; 503 case PF_POOL_ROUNDROBIN: 504 printf(" round-robin"); 505 break; 506 } 507 if (pool->opts & PF_POOL_STICKYADDR) 508 printf(" sticky-address"); 509 if (id == PF_NAT && p1 == 0 && p2 == 0) 510 printf(" static-port"); 511 } 512 513 const char *pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 514 const char *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 515 const char *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 516 const char *pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 517 518 void 519 print_status(struct pf_status *s, int opts) 520 { 521 char statline[80], *running; 522 time_t runtime; 523 int i; 524 525 runtime = time(NULL) - s->since; 526 running = s->running ? "Enabled" : "Disabled"; 527 528 if (s->since) { 529 unsigned sec, min, hrs, day = runtime; 530 531 sec = day % 60; 532 day /= 60; 533 min = day % 60; 534 day /= 60; 535 hrs = day % 24; 536 day /= 24; 537 snprintf(statline, sizeof(statline), 538 "Status: %s for %u days %.2u:%.2u:%.2u", 539 running, day, hrs, min, sec); 540 } else 541 snprintf(statline, sizeof(statline), "Status: %s", running); 542 printf("%-44s", statline); 543 switch (s->debug) { 544 case PF_DEBUG_NONE: 545 printf("%15s\n\n", "Debug: None"); 546 break; 547 case PF_DEBUG_URGENT: 548 printf("%15s\n\n", "Debug: Urgent"); 549 break; 550 case PF_DEBUG_MISC: 551 printf("%15s\n\n", "Debug: Misc"); 552 break; 553 case PF_DEBUG_NOISY: 554 printf("%15s\n\n", "Debug: Loud"); 555 break; 556 } 557 printf("Hostid: 0x%08x\n\n", ntohl(s->hostid)); 558 if (s->ifname[0] != 0) { 559 printf("Interface Stats for %-16s %5s %16s\n", 560 s->ifname, "IPv4", "IPv6"); 561 printf(" %-25s %14llu %16llu\n", "Bytes In", 562 (unsigned long long)s->bcounters[0][0], 563 (unsigned long long)s->bcounters[1][0]); 564 printf(" %-25s %14llu %16llu\n", "Bytes Out", 565 (unsigned long long)s->bcounters[0][1], 566 (unsigned long long)s->bcounters[1][1]); 567 printf(" Packets In\n"); 568 printf(" %-23s %14llu %16llu\n", "Passed", 569 (unsigned long long)s->pcounters[0][0][PF_PASS], 570 (unsigned long long)s->pcounters[1][0][PF_PASS]); 571 printf(" %-23s %14llu %16llu\n", "Blocked", 572 (unsigned long long)s->pcounters[0][0][PF_DROP], 573 (unsigned long long)s->pcounters[1][0][PF_DROP]); 574 printf(" Packets Out\n"); 575 printf(" %-23s %14llu %16llu\n", "Passed", 576 (unsigned long long)s->pcounters[0][1][PF_PASS], 577 (unsigned long long)s->pcounters[1][1][PF_PASS]); 578 printf(" %-23s %14llu %16llu\n\n", "Blocked", 579 (unsigned long long)s->pcounters[0][1][PF_DROP], 580 (unsigned long long)s->pcounters[1][1][PF_DROP]); 581 } 582 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 583 printf(" %-25s %14u %14s\n", "current entries", s->states, ""); 584 for (i = 0; i < FCNT_MAX; i++) { 585 printf(" %-25s %14llu ", pf_fcounters[i], 586 (unsigned long long)s->fcounters[i]); 587 if (runtime > 0) 588 printf("%14.1f/s\n", 589 (double)s->fcounters[i] / (double)runtime); 590 else 591 printf("%14s\n", ""); 592 } 593 if (opts & PF_OPT_VERBOSE) { 594 printf("Source Tracking Table\n"); 595 printf(" %-25s %14u %14s\n", "current entries", 596 s->src_nodes, ""); 597 for (i = 0; i < SCNT_MAX; i++) { 598 printf(" %-25s %14lld ", pf_scounters[i], 599 (unsigned long long)s->scounters[i]); 600 if (runtime > 0) 601 printf("%14.1f/s\n", 602 (double)s->scounters[i] / (double)runtime); 603 else 604 printf("%14s\n", ""); 605 } 606 } 607 printf("Counters\n"); 608 for (i = 0; i < PFRES_MAX; i++) { 609 printf(" %-25s %14llu ", pf_reasons[i], 610 (unsigned long long)s->counters[i]); 611 if (runtime > 0) 612 printf("%14.1f/s\n", 613 (double)s->counters[i] / (double)runtime); 614 else 615 printf("%14s\n", ""); 616 } 617 if (opts & PF_OPT_VERBOSE) { 618 printf("Limit Counters\n"); 619 for (i = 0; i < LCNT_MAX; i++) { 620 printf(" %-25s %14lld ", pf_lcounters[i], 621 (unsigned long long)s->lcounters[i]); 622 if (runtime > 0) 623 printf("%14.1f/s\n", 624 (double)s->lcounters[i] / (double)runtime); 625 else 626 printf("%14s\n", ""); 627 } 628 } 629 } 630 631 void 632 print_src_node(struct pf_src_node *sn, int opts) 633 { 634 struct pf_addr_wrap aw; 635 int min, sec; 636 637 memset(&aw, 0, sizeof(aw)); 638 if (sn->af == AF_INET) 639 aw.v.a.mask.addr32[0] = 0xffffffff; 640 else 641 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 642 643 aw.v.a.addr = sn->addr; 644 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 645 printf(" -> "); 646 aw.v.a.addr = sn->raddr; 647 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 648 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 649 sn->conn, sn->conn_rate.count / 1000, 650 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 651 if (opts & PF_OPT_VERBOSE) { 652 sec = sn->creation % 60; 653 sn->creation /= 60; 654 min = sn->creation % 60; 655 sn->creation /= 60; 656 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 657 if (sn->states == 0) { 658 sec = sn->expire % 60; 659 sn->expire /= 60; 660 min = sn->expire % 60; 661 sn->expire /= 60; 662 printf(", expires in %.2u:%.2u:%.2u", 663 sn->expire, min, sec); 664 } 665 printf(", %u pkts, %u bytes", sn->packets, sn->bytes); 666 switch (sn->ruletype) { 667 case PF_NAT: 668 if (sn->rule.nr != -1) 669 printf(", nat rule %u", sn->rule.nr); 670 break; 671 case PF_RDR: 672 if (sn->rule.nr != -1) 673 printf(", rdr rule %u", sn->rule.nr); 674 break; 675 case PF_PASS: 676 if (sn->rule.nr != -1) 677 printf(", filter rule %u", sn->rule.nr); 678 break; 679 } 680 printf("\n"); 681 } 682 } 683 684 void 685 print_rule(struct pf_rule *r, const char *anchor_call, int verbose) 686 { 687 static const char *actiontypes[] = { "pass", "block", "scrub", 688 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" }; 689 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 690 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 691 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 692 int i, opts; 693 694 if (verbose) 695 printf("@%d ", r->nr); 696 if (r->action > PF_NORDR) 697 printf("action(%d)", r->action); 698 else if (anchor_call[0]) 699 printf("%s \"%s\"", anchortypes[r->action], 700 anchor_call); 701 else { 702 printf("%s", actiontypes[r->action]); 703 if (r->natpass) 704 printf(" pass"); 705 } 706 if (r->action == PF_DROP) { 707 if (r->rule_flag & PFRULE_RETURN) 708 printf(" return"); 709 else if (r->rule_flag & PFRULE_RETURNRST) { 710 if (!r->return_ttl) 711 printf(" return-rst"); 712 else 713 printf(" return-rst(ttl %d)", r->return_ttl); 714 } else if (r->rule_flag & PFRULE_RETURNICMP) { 715 const struct icmpcodeent *ic, *ic6; 716 717 ic = geticmpcodebynumber(r->return_icmp >> 8, 718 r->return_icmp & 255, AF_INET); 719 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 720 r->return_icmp6 & 255, AF_INET6); 721 722 switch (r->af) { 723 case AF_INET: 724 printf(" return-icmp"); 725 if (ic == NULL) 726 printf("(%u)", r->return_icmp & 255); 727 else 728 printf("(%s)", ic->name); 729 break; 730 case AF_INET6: 731 printf(" return-icmp6"); 732 if (ic6 == NULL) 733 printf("(%u)", r->return_icmp6 & 255); 734 else 735 printf("(%s)", ic6->name); 736 break; 737 default: 738 printf(" return-icmp"); 739 if (ic == NULL) 740 printf("(%u, ", r->return_icmp & 255); 741 else 742 printf("(%s, ", ic->name); 743 if (ic6 == NULL) 744 printf("%u)", r->return_icmp6 & 255); 745 else 746 printf("%s)", ic6->name); 747 break; 748 } 749 } else 750 printf(" drop"); 751 } 752 if (r->direction == PF_IN) 753 printf(" in"); 754 else if (r->direction == PF_OUT) 755 printf(" out"); 756 if (r->log == 1) 757 printf(" log"); 758 else if (r->log == 2) 759 printf(" log-all"); 760 if (r->quick) 761 printf(" quick"); 762 if (r->ifname[0]) { 763 if (r->ifnot) 764 printf(" on ! %s", r->ifname); 765 else 766 printf(" on %s", r->ifname); 767 } 768 if (r->rt) { 769 if (r->rt == PF_ROUTETO) 770 printf(" route-to"); 771 else if (r->rt == PF_REPLYTO) 772 printf(" reply-to"); 773 else if (r->rt == PF_DUPTO) 774 printf(" dup-to"); 775 else if (r->rt == PF_FASTROUTE) 776 printf(" fastroute"); 777 if (r->rt != PF_FASTROUTE) { 778 printf(" "); 779 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 780 } 781 } 782 if (r->af) { 783 if (r->af == AF_INET) 784 printf(" inet"); 785 else 786 printf(" inet6"); 787 } 788 if (r->proto) { 789 struct protoent *p; 790 791 if ((p = getprotobynumber(r->proto)) != NULL) 792 printf(" proto %s", p->p_name); 793 else 794 printf(" proto %u", r->proto); 795 } 796 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 797 verbose); 798 if (r->uid.op) 799 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 800 UID_MAX); 801 if (r->gid.op) 802 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 803 GID_MAX); 804 if (r->flags || r->flagset) { 805 printf(" flags "); 806 print_flags(r->flags); 807 printf("/"); 808 print_flags(r->flagset); 809 } 810 if (r->type) { 811 const struct icmptypeent *it; 812 813 it = geticmptypebynumber(r->type-1, r->af); 814 if (r->af != AF_INET6) 815 printf(" icmp-type"); 816 else 817 printf(" icmp6-type"); 818 if (it != NULL) 819 printf(" %s", it->name); 820 else 821 printf(" %u", r->type-1); 822 if (r->code) { 823 const struct icmpcodeent *ic; 824 825 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 826 if (ic != NULL) 827 printf(" code %s", ic->name); 828 else 829 printf(" code %u", r->code-1); 830 } 831 } 832 if (r->tos) 833 printf(" tos 0x%2.2x", r->tos); 834 if (r->keep_state == PF_STATE_NORMAL) 835 printf(" keep state"); 836 else if (r->keep_state == PF_STATE_MODULATE) 837 printf(" modulate state"); 838 else if (r->keep_state == PF_STATE_SYNPROXY) 839 printf(" synproxy state"); 840 if (r->prob) { 841 char buf[20]; 842 843 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 844 for (i = strlen(buf)-1; i > 0; i--) { 845 if (buf[i] == '0') 846 buf[i] = '\0'; 847 else { 848 if (buf[i] == '.') 849 buf[i] = '\0'; 850 break; 851 } 852 } 853 printf(" probability %s%%", buf); 854 } 855 opts = 0; 856 if (r->max_states || r->max_src_nodes || r->max_src_states) 857 opts = 1; 858 if (r->rule_flag & PFRULE_NOSYNC) 859 opts = 1; 860 if (r->rule_flag & PFRULE_SRCTRACK) 861 opts = 1; 862 if (r->rule_flag & (PFRULE_IFBOUND | PFRULE_GRBOUND)) 863 opts = 1; 864 for (i = 0; !opts && i < PFTM_MAX; ++i) 865 if (r->timeout[i]) 866 opts = 1; 867 if (opts) { 868 printf(" ("); 869 if (r->max_states) { 870 printf("max %u", r->max_states); 871 opts = 0; 872 } 873 if (r->rule_flag & PFRULE_NOSYNC) { 874 if (!opts) 875 printf(", "); 876 printf("no-sync"); 877 opts = 0; 878 } 879 if (r->rule_flag & PFRULE_SRCTRACK) { 880 if (!opts) 881 printf(", "); 882 printf("source-track"); 883 if (r->rule_flag & PFRULE_RULESRCTRACK) 884 printf(" rule"); 885 else 886 printf(" global"); 887 opts = 0; 888 } 889 if (r->max_src_states) { 890 if (!opts) 891 printf(", "); 892 printf("max-src-states %u", r->max_src_states); 893 opts = 0; 894 } 895 if (r->max_src_conn) { 896 if (!opts) 897 printf(", "); 898 printf("max-src-conn %u", r->max_src_conn); 899 opts = 0; 900 } 901 if (r->max_src_conn_rate.limit) { 902 if (!opts) 903 printf(", "); 904 printf("max-src-conn-rate %u/%u", 905 r->max_src_conn_rate.limit, 906 r->max_src_conn_rate.seconds); 907 opts = 0; 908 } 909 if (r->max_src_nodes) { 910 if (!opts) 911 printf(", "); 912 printf("max-src-nodes %u", r->max_src_nodes); 913 opts = 0; 914 } 915 if (r->overload_tblname[0]) { 916 if (!opts) 917 printf(", "); 918 printf("overload <%s>", r->overload_tblname); 919 if (r->flush) 920 printf(" flush"); 921 if (r->flush & PF_FLUSH_GLOBAL) 922 printf(" global"); 923 } 924 if (r->rule_flag & PFRULE_IFBOUND) { 925 if (!opts) 926 printf(", "); 927 printf("if-bound"); 928 opts = 0; 929 } 930 if (r->rule_flag & PFRULE_GRBOUND) { 931 if (!opts) 932 printf(", "); 933 printf("group-bound"); 934 opts = 0; 935 } 936 for (i = 0; i < PFTM_MAX; ++i) 937 if (r->timeout[i]) { 938 int j; 939 940 if (!opts) 941 printf(", "); 942 opts = 0; 943 for (j = 0; pf_timeouts[j].name; ++j) 944 if (pf_timeouts[j].timeout == i) 945 break; 946 printf("%s %u", pf_timeouts[j].name ? 947 pf_timeouts[j].name : "inv.timeout", 948 r->timeout[i]); 949 } 950 printf(")"); 951 } 952 if (r->rule_flag & PFRULE_FRAGMENT) 953 printf(" fragment"); 954 if (r->rule_flag & PFRULE_NODF) 955 printf(" no-df"); 956 if (r->rule_flag & PFRULE_RANDOMID) 957 printf(" random-id"); 958 if (r->min_ttl) 959 printf(" min-ttl %d", r->min_ttl); 960 if (r->max_mss) 961 printf(" max-mss %d", r->max_mss); 962 if (r->allow_opts) 963 printf(" allow-opts"); 964 if (r->action == PF_SCRUB) { 965 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 966 printf(" reassemble tcp"); 967 968 if (r->rule_flag & PFRULE_FRAGDROP) 969 printf(" fragment drop-ovl"); 970 else if (r->rule_flag & PFRULE_FRAGCROP) 971 printf(" fragment crop"); 972 else 973 printf(" fragment reassemble"); 974 } 975 if (r->label[0]) 976 printf(" label \"%s\"", r->label); 977 if (r->qname[0] && r->pqname[0]) 978 printf(" queue(%s, %s)", r->qname, r->pqname); 979 else if (r->qname[0]) 980 printf(" queue %s", r->qname); 981 if (r->tagname[0]) 982 printf(" tag %s", r->tagname); 983 if (r->match_tagname[0]) { 984 if (r->match_tag_not) 985 printf(" !"); 986 printf(" tagged %s", r->match_tagname); 987 } 988 if (!anchor_call[0] && (r->action == PF_NAT || 989 r->action == PF_BINAT || r->action == PF_RDR)) { 990 printf(" -> "); 991 print_pool(&r->rpool, r->rpool.proxy_port[0], 992 r->rpool.proxy_port[1], r->af, r->action); 993 } 994 printf("\n"); 995 } 996 997 void 998 print_tabledef(const char *name, int flags, int addrs, 999 struct node_tinithead *nodes) 1000 { 1001 struct node_tinit *ti, *nti; 1002 struct node_host *h; 1003 1004 printf("table <%s>", name); 1005 if (flags & PFR_TFLAG_CONST) 1006 printf(" const"); 1007 if (flags & PFR_TFLAG_PERSIST) 1008 printf(" persist"); 1009 SIMPLEQ_FOREACH(ti, nodes, entries) { 1010 if (ti->file) { 1011 printf(" file \"%s\"", ti->file); 1012 continue; 1013 } 1014 printf(" {"); 1015 for (;;) { 1016 for (h = ti->host; h != NULL; h = h->next) { 1017 printf(h->not ? " !" : " "); 1018 print_addr(&h->addr, h->af, 0); 1019 } 1020 nti = SIMPLEQ_NEXT(ti, entries); 1021 if (nti != NULL && nti->file == NULL) 1022 ti = nti; /* merge lists */ 1023 else 1024 break; 1025 } 1026 printf(" }"); 1027 } 1028 if (addrs && SIMPLEQ_EMPTY(nodes)) 1029 printf(" { }"); 1030 printf("\n"); 1031 } 1032 1033 int 1034 parse_flags(char *s) 1035 { 1036 char *p, *q; 1037 u_int8_t f = 0; 1038 1039 for (p = s; *p; p++) { 1040 if ((q = strchr(tcpflags, *p)) == NULL) 1041 return -1; 1042 else 1043 f |= 1 << (q - tcpflags); 1044 } 1045 return (f ? f : PF_TH_ALL); 1046 } 1047 1048 void 1049 set_ipmask(struct node_host *h, u_int8_t b) 1050 { 1051 struct pf_addr *m, *n; 1052 int i, j = 0; 1053 1054 m = &h->addr.v.a.mask; 1055 memset(m, 0, sizeof(*m)); 1056 1057 while (b >= 32) { 1058 m->addr32[j++] = 0xffffffff; 1059 b -= 32; 1060 } 1061 for (i = 31; i > 31-b; --i) 1062 m->addr32[j] |= (1 << i); 1063 if (b) 1064 m->addr32[j] = htonl(m->addr32[j]); 1065 1066 /* Mask off bits of the address that will never be used. */ 1067 n = &h->addr.v.a.addr; 1068 if (h->addr.type == PF_ADDR_ADDRMASK) 1069 for (i = 0; i < 4; i++) 1070 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1071 } 1072 1073 int 1074 check_netmask(struct node_host *h, sa_family_t af) 1075 { 1076 struct node_host *n = NULL; 1077 struct pf_addr *m; 1078 1079 for (n = h; n != NULL; n = n->next) { 1080 if (h->addr.type == PF_ADDR_TABLE) 1081 continue; 1082 m = &h->addr.v.a.mask; 1083 /* fix up netmask for dynaddr */ 1084 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1085 unmask(m, AF_INET6) > 32) 1086 set_ipmask(n, 32); 1087 /* netmasks > 32 bit are invalid on v4 */ 1088 if (af == AF_INET && 1089 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1090 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1091 unmask(m, AF_INET6)); 1092 return (1); 1093 } 1094 } 1095 return (0); 1096 } 1097 1098 /* interface lookup routines */ 1099 1100 struct node_host *iftab; 1101 1102 void 1103 ifa_load(void) 1104 { 1105 struct ifaddrs *ifap, *ifa; 1106 struct node_host *n = NULL, *h = NULL; 1107 1108 if (getifaddrs(&ifap) < 0) 1109 err(1, "getifaddrs"); 1110 1111 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1112 if (!(ifa->ifa_addr->sa_family == AF_INET || 1113 ifa->ifa_addr->sa_family == AF_INET6 || 1114 ifa->ifa_addr->sa_family == AF_LINK)) 1115 continue; 1116 n = calloc(1, sizeof(struct node_host)); 1117 if (n == NULL) 1118 err(1, "address: calloc"); 1119 n->af = ifa->ifa_addr->sa_family; 1120 n->ifa_flags = ifa->ifa_flags; 1121 #ifdef __KAME__ 1122 if (n->af == AF_INET6 && 1123 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1124 ifa->ifa_addr)->sin6_addr) && 1125 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1126 0) { 1127 struct sockaddr_in6 *sin6; 1128 1129 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1130 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1131 sin6->sin6_addr.s6_addr[3]; 1132 sin6->sin6_addr.s6_addr[2] = 0; 1133 sin6->sin6_addr.s6_addr[3] = 0; 1134 } 1135 #endif 1136 n->ifindex = 0; 1137 if (n->af == AF_INET) { 1138 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1139 ifa->ifa_addr)->sin_addr.s_addr, 1140 sizeof(struct in_addr)); 1141 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1142 ifa->ifa_netmask)->sin_addr.s_addr, 1143 sizeof(struct in_addr)); 1144 if (ifa->ifa_broadaddr != NULL) 1145 memcpy(&n->bcast, &((struct sockaddr_in *) 1146 ifa->ifa_broadaddr)->sin_addr.s_addr, 1147 sizeof(struct in_addr)); 1148 if (ifa->ifa_dstaddr != NULL) 1149 memcpy(&n->peer, &((struct sockaddr_in *) 1150 ifa->ifa_dstaddr)->sin_addr.s_addr, 1151 sizeof(struct in_addr)); 1152 } else if (n->af == AF_INET6) { 1153 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1154 ifa->ifa_addr)->sin6_addr.s6_addr, 1155 sizeof(struct in6_addr)); 1156 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1157 ifa->ifa_netmask)->sin6_addr.s6_addr, 1158 sizeof(struct in6_addr)); 1159 if (ifa->ifa_broadaddr != NULL) 1160 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1161 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1162 sizeof(struct in6_addr)); 1163 if (ifa->ifa_dstaddr != NULL) 1164 memcpy(&n->peer, &((struct sockaddr_in6 *) 1165 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1166 sizeof(struct in6_addr)); 1167 n->ifindex = ((struct sockaddr_in6 *) 1168 ifa->ifa_addr)->sin6_scope_id; 1169 } 1170 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1171 err(1, "ifa_load: strdup"); 1172 n->next = NULL; 1173 n->tail = n; 1174 if (h == NULL) 1175 h = n; 1176 else { 1177 h->tail->next = n; 1178 h->tail = n; 1179 } 1180 } 1181 1182 iftab = h; 1183 freeifaddrs(ifap); 1184 } 1185 1186 struct node_host * 1187 ifa_exists(const char *ifa_name, int group_ok) 1188 { 1189 struct node_host *n; 1190 1191 if (iftab == NULL) 1192 ifa_load(); 1193 1194 for (n = iftab; n; n = n->next) { 1195 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1196 return (n); 1197 } 1198 1199 return (NULL); 1200 } 1201 1202 struct node_host * 1203 ifa_lookup(const char *ifa_name, int flags) 1204 { 1205 struct node_host *p = NULL, *h = NULL, *n = NULL; 1206 int got4 = 0, got6 = 0; 1207 const char *last_if = NULL; 1208 1209 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1210 ifa_name = NULL; 1211 1212 if (iftab == NULL) 1213 ifa_load(); 1214 1215 for (p = iftab; p; p = p->next) { 1216 if (ifa_skip_if(ifa_name, p)) 1217 continue; 1218 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1219 continue; 1220 if ((flags & PFI_AFLAG_BROADCAST) && 1221 !(p->ifa_flags & IFF_BROADCAST)) 1222 continue; 1223 if ((flags & PFI_AFLAG_PEER) && 1224 !(p->ifa_flags & IFF_POINTOPOINT)) 1225 continue; 1226 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1227 continue; 1228 if (last_if == NULL || strcmp(last_if, p->ifname)) 1229 got4 = got6 = 0; 1230 last_if = p->ifname; 1231 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1232 continue; 1233 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1234 continue; 1235 if (p->af == AF_INET) 1236 got4 = 1; 1237 else 1238 got6 = 1; 1239 n = calloc(1, sizeof(struct node_host)); 1240 if (n == NULL) 1241 err(1, "address: calloc"); 1242 n->af = p->af; 1243 if (flags & PFI_AFLAG_BROADCAST) 1244 memcpy(&n->addr.v.a.addr, &p->bcast, 1245 sizeof(struct pf_addr)); 1246 else if (flags & PFI_AFLAG_PEER) 1247 memcpy(&n->addr.v.a.addr, &p->peer, 1248 sizeof(struct pf_addr)); 1249 else 1250 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1251 sizeof(struct pf_addr)); 1252 if (flags & PFI_AFLAG_NETWORK) 1253 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1254 else { 1255 if (n->af == AF_INET) { 1256 if (p->ifa_flags & IFF_LOOPBACK && 1257 p->ifa_flags & IFF_LINK1) 1258 memcpy(&n->addr.v.a.mask, 1259 &p->addr.v.a.mask, 1260 sizeof(struct pf_addr)); 1261 else 1262 set_ipmask(n, 32); 1263 } else 1264 set_ipmask(n, 128); 1265 } 1266 n->ifindex = p->ifindex; 1267 1268 n->next = NULL; 1269 n->tail = n; 1270 if (h == NULL) 1271 h = n; 1272 else { 1273 h->tail->next = n; 1274 h->tail = n; 1275 } 1276 } 1277 return (h); 1278 } 1279 1280 int 1281 ifa_skip_if(const char *filter, struct node_host *p) 1282 { 1283 int n; 1284 1285 if (p->af != AF_INET && p->af != AF_INET6) 1286 return (1); 1287 if (filter == NULL || !*filter) 1288 return (0); 1289 if (!strcmp(p->ifname, filter)) 1290 return (0); /* exact match */ 1291 n = strlen(filter); 1292 if (n < 1 || n >= IFNAMSIZ) 1293 return (1); /* sanity check */ 1294 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1295 return (1); /* only do exact match in that case */ 1296 if (strncmp(p->ifname, filter, n)) 1297 return (1); /* prefix doesn't match */ 1298 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1299 } 1300 1301 1302 struct node_host * 1303 host(const char *s) 1304 { 1305 struct node_host *h = NULL; 1306 int mask, v4mask, v6mask, cont = 1; 1307 char *p, *q, *ps; 1308 1309 if ((p = strrchr(s, '/')) != NULL) { 1310 mask = strtol(p+1, &q, 0); 1311 if (!q || *q || mask > 128 || q == (p+1)) { 1312 fprintf(stderr, "invalid netmask '%s'\n", p); 1313 return (NULL); 1314 } 1315 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1316 err(1, "host: malloc"); 1317 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1318 v4mask = v6mask = mask; 1319 } else { 1320 if ((ps = strdup(s)) == NULL) 1321 err(1, "host: strdup"); 1322 v4mask = 32; 1323 v6mask = 128; 1324 mask = -1; 1325 } 1326 1327 /* interface with this name exists? */ 1328 if (cont && (h = host_if(ps, mask)) != NULL) 1329 cont = 0; 1330 1331 /* IPv4 address? */ 1332 if (cont && (h = host_v4(s, mask)) != NULL) 1333 cont = 0; 1334 1335 /* IPv6 address? */ 1336 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1337 cont = 0; 1338 1339 /* dns lookup */ 1340 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1341 cont = 0; 1342 free(ps); 1343 1344 if (h == NULL || cont == 1) { 1345 fprintf(stderr, "no IP address found for %s\n", s); 1346 return (NULL); 1347 } 1348 return (h); 1349 } 1350 1351 struct node_host * 1352 host_if(const char *s, int mask) 1353 { 1354 struct node_host *n, *h = NULL; 1355 char *p, *ps; 1356 int flags = 0; 1357 1358 if ((ps = strdup(s)) == NULL) 1359 err(1, "host_if: strdup"); 1360 while ((p = strrchr(ps, ':')) != NULL) { 1361 if (!strcmp(p+1, "network")) 1362 flags |= PFI_AFLAG_NETWORK; 1363 else if (!strcmp(p+1, "broadcast")) 1364 flags |= PFI_AFLAG_BROADCAST; 1365 else if (!strcmp(p+1, "peer")) 1366 flags |= PFI_AFLAG_PEER; 1367 else if (!strcmp(p+1, "0")) 1368 flags |= PFI_AFLAG_NOALIAS; 1369 else { 1370 free(ps); 1371 return (NULL); 1372 } 1373 *p = '\0'; 1374 } 1375 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1376 fprintf(stderr, "illegal combination of interface modifiers\n"); 1377 free(ps); 1378 return (NULL); 1379 } 1380 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1381 fprintf(stderr, "network or broadcast lookup, but " 1382 "extra netmask given\n"); 1383 free(ps); 1384 return (NULL); 1385 } 1386 if (ifa_exists(ps, 1) || !strncmp(ps, "self", IFNAMSIZ)) { 1387 /* interface with this name exists */ 1388 h = ifa_lookup(ps, flags); 1389 for (n = h; n != NULL && mask > -1; n = n->next) 1390 set_ipmask(n, mask); 1391 } 1392 1393 free(ps); 1394 return (h); 1395 } 1396 1397 struct node_host * 1398 host_v4(const char *s, int mask) 1399 { 1400 struct node_host *h = NULL; 1401 struct in_addr ina; 1402 int bits = 32; 1403 1404 memset(&ina, 0, sizeof(struct in_addr)); 1405 if (strrchr(s, '/') != NULL) { 1406 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1407 return (NULL); 1408 } else { 1409 if (inet_pton(AF_INET, s, &ina) != 1) 1410 return (NULL); 1411 } 1412 1413 h = calloc(1, sizeof(struct node_host)); 1414 if (h == NULL) 1415 err(1, "address: calloc"); 1416 h->ifname = NULL; 1417 h->af = AF_INET; 1418 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1419 set_ipmask(h, bits); 1420 h->next = NULL; 1421 h->tail = h; 1422 1423 return (h); 1424 } 1425 1426 struct node_host * 1427 host_v6(const char *s, int mask) 1428 { 1429 struct addrinfo hints, *res; 1430 struct node_host *h = NULL; 1431 1432 memset(&hints, 0, sizeof(hints)); 1433 hints.ai_family = AF_INET6; 1434 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1435 hints.ai_flags = AI_NUMERICHOST; 1436 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1437 h = calloc(1, sizeof(struct node_host)); 1438 if (h == NULL) 1439 err(1, "address: calloc"); 1440 h->ifname = NULL; 1441 h->af = AF_INET6; 1442 memcpy(&h->addr.v.a.addr, 1443 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1444 sizeof(h->addr.v.a.addr)); 1445 h->ifindex = 1446 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1447 set_ipmask(h, mask); 1448 freeaddrinfo(res); 1449 h->next = NULL; 1450 h->tail = h; 1451 } 1452 1453 return (h); 1454 } 1455 1456 struct node_host * 1457 host_dns(const char *s, int v4mask, int v6mask) 1458 { 1459 struct addrinfo hints, *res0, *res; 1460 struct node_host *n, *h = NULL; 1461 int error, noalias = 0; 1462 int got4 = 0, got6 = 0; 1463 char *p, *ps; 1464 1465 if ((ps = strdup(s)) == NULL) 1466 err(1, "host_dns: strdup"); 1467 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1468 noalias = 1; 1469 *p = '\0'; 1470 } 1471 memset(&hints, 0, sizeof(hints)); 1472 hints.ai_family = PF_UNSPEC; 1473 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1474 error = getaddrinfo(ps, NULL, &hints, &res0); 1475 if (error) { 1476 free(ps); 1477 return (h); 1478 } 1479 1480 for (res = res0; res; res = res->ai_next) { 1481 if (res->ai_family != AF_INET && 1482 res->ai_family != AF_INET6) 1483 continue; 1484 if (noalias) { 1485 if (res->ai_family == AF_INET) { 1486 if (got4) 1487 continue; 1488 got4 = 1; 1489 } else { 1490 if (got6) 1491 continue; 1492 got6 = 1; 1493 } 1494 } 1495 n = calloc(1, sizeof(struct node_host)); 1496 if (n == NULL) 1497 err(1, "host_dns: calloc"); 1498 n->ifname = NULL; 1499 n->af = res->ai_family; 1500 if (res->ai_family == AF_INET) { 1501 memcpy(&n->addr.v.a.addr, 1502 &((struct sockaddr_in *) 1503 res->ai_addr)->sin_addr.s_addr, 1504 sizeof(struct in_addr)); 1505 set_ipmask(n, v4mask); 1506 } else { 1507 memcpy(&n->addr.v.a.addr, 1508 &((struct sockaddr_in6 *) 1509 res->ai_addr)->sin6_addr.s6_addr, 1510 sizeof(struct in6_addr)); 1511 n->ifindex = 1512 ((struct sockaddr_in6 *) 1513 res->ai_addr)->sin6_scope_id; 1514 set_ipmask(n, v6mask); 1515 } 1516 n->next = NULL; 1517 n->tail = n; 1518 if (h == NULL) 1519 h = n; 1520 else { 1521 h->tail->next = n; 1522 h->tail = n; 1523 } 1524 } 1525 freeaddrinfo(res0); 1526 free(ps); 1527 1528 return (h); 1529 } 1530 1531 /* 1532 * convert a hostname to a list of addresses and put them in the given buffer. 1533 * test: 1534 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1535 */ 1536 int 1537 append_addr(struct pfr_buffer *b, char *s, int test) 1538 { 1539 char *r; 1540 struct node_host *h, *n; 1541 int rv, not = 0; 1542 1543 for (r = s; *r == '!'; r++) 1544 not = !not; 1545 if ((n = host(r)) == NULL) { 1546 errno = 0; 1547 return (-1); 1548 } 1549 rv = append_addr_host(b, n, test, not); 1550 do { 1551 h = n; 1552 n = n->next; 1553 free(h); 1554 } while (n != NULL); 1555 return (rv); 1556 } 1557 1558 /* 1559 * same as previous function, but with a pre-parsed input and the ability 1560 * to "negate" the result. Does not free the node_host list. 1561 * not: 1562 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1563 */ 1564 int 1565 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1566 { 1567 int bits; 1568 struct pfr_addr addr; 1569 1570 do { 1571 bzero(&addr, sizeof(addr)); 1572 addr.pfra_not = n->not ^ not; 1573 addr.pfra_af = n->af; 1574 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1575 switch (n->af) { 1576 case AF_INET: 1577 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1578 bits = 32; 1579 break; 1580 case AF_INET6: 1581 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1582 sizeof(struct in6_addr)); 1583 bits = 128; 1584 break; 1585 default: 1586 errno = EINVAL; 1587 return (-1); 1588 } 1589 if ((test && (not || addr.pfra_net != bits)) || 1590 addr.pfra_net > bits) { 1591 errno = EINVAL; 1592 return (-1); 1593 } 1594 if (pfr_buf_add(b, &addr)) 1595 return (-1); 1596 } while ((n = n->next) != NULL); 1597 1598 return (0); 1599 } 1600 1601 int 1602 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1603 { 1604 struct pfioc_trans_e trans; 1605 1606 bzero(&trans, sizeof(trans)); 1607 trans.rs_num = rs_num; 1608 if (strlcpy(trans.anchor, anchor, 1609 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1610 errx(1, "pfctl_add_trans: strlcpy"); 1611 1612 return pfr_buf_add(buf, &trans); 1613 } 1614 1615 u_int32_t 1616 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1617 { 1618 struct pfioc_trans_e *p; 1619 1620 PFRB_FOREACH(p, buf) 1621 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1622 return (p->ticket); 1623 errx(1, "pfctl_get_ticket: assertion failed"); 1624 } 1625 1626 int 1627 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1628 { 1629 struct pfioc_trans trans; 1630 1631 bzero(&trans, sizeof(trans)); 1632 trans.size = buf->pfrb_size - from; 1633 trans.esize = sizeof(struct pfioc_trans_e); 1634 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1635 return ioctl(dev, cmd, &trans); 1636 } 1637