1 /* $OpenBSD: pfctl_parser.c,v 1.240 2008/06/10 20:55:02 mcbride Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Daniel Hartmeier 5 * Copyright (c) 2002,2003 Henning Brauer 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * - Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * - Redistributions in binary form must reproduce the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer in the documentation and/or other materials provided 17 * with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34 #include <sys/user.h> 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/pf/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 void print_op (u_int8_t, const char *, const char *); 63 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *); 64 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned); 65 void print_flags (u_int8_t); 66 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 67 struct pf_rule_addr *, u_int8_t, u_int8_t, int); 68 int ifa_skip_if(const char *filter, struct node_host *p); 69 70 struct node_host *ifa_grouplookup(const char *, int); 71 struct node_host *host_if(const char *, int); 72 static struct node_host *host_v4(const char *); 73 struct node_host *host_v6(const char *, int); 74 struct node_host *host_dns(const char *, int, int); 75 76 const char *tcpflags = "FSRPAUEW"; 77 78 static const struct icmptypeent icmp_type[] = { 79 { "echoreq", ICMP_ECHO }, 80 { "echorep", ICMP_ECHOREPLY }, 81 { "unreach", ICMP_UNREACH }, 82 { "squench", ICMP_SOURCEQUENCH }, 83 { "redir", ICMP_REDIRECT }, 84 { "althost", ICMP_ALTHOSTADDR }, 85 { "routeradv", ICMP_ROUTERADVERT }, 86 { "routersol", ICMP_ROUTERSOLICIT }, 87 { "timex", ICMP_TIMXCEED }, 88 { "paramprob", ICMP_PARAMPROB }, 89 { "timereq", ICMP_TSTAMP }, 90 { "timerep", ICMP_TSTAMPREPLY }, 91 { "inforeq", ICMP_IREQ }, 92 { "inforep", ICMP_IREQREPLY }, 93 { "maskreq", ICMP_MASKREQ }, 94 { "maskrep", ICMP_MASKREPLY }, 95 { "trace", ICMP_TRACEROUTE }, 96 { "dataconv", ICMP_DATACONVERR }, 97 { "mobredir", ICMP_MOBILE_REDIRECT }, 98 { "ipv6-where", ICMP_IPV6_WHEREAREYOU }, 99 { "ipv6-here", ICMP_IPV6_IAMHERE }, 100 { "mobregreq", ICMP_MOBILE_REGREQUEST }, 101 { "mobregrep", ICMP_MOBILE_REGREPLY }, 102 { "skip", ICMP_SKIP }, 103 { "photuris", ICMP_PHOTURIS } 104 }; 105 106 static const struct icmptypeent icmp6_type[] = { 107 { "unreach", ICMP6_DST_UNREACH }, 108 { "toobig", ICMP6_PACKET_TOO_BIG }, 109 { "timex", ICMP6_TIME_EXCEEDED }, 110 { "paramprob", ICMP6_PARAM_PROB }, 111 { "echoreq", ICMP6_ECHO_REQUEST }, 112 { "echorep", ICMP6_ECHO_REPLY }, 113 { "groupqry", ICMP6_MEMBERSHIP_QUERY }, 114 { "listqry", MLD_LISTENER_QUERY }, 115 { "grouprep", ICMP6_MEMBERSHIP_REPORT }, 116 { "listenrep", MLD_LISTENER_REPORT }, 117 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION }, 118 { "listendone", MLD_LISTENER_DONE }, 119 { "routersol", ND_ROUTER_SOLICIT }, 120 { "routeradv", ND_ROUTER_ADVERT }, 121 { "neighbrsol", ND_NEIGHBOR_SOLICIT }, 122 { "neighbradv", ND_NEIGHBOR_ADVERT }, 123 { "redir", ND_REDIRECT }, 124 { "routrrenum", ICMP6_ROUTER_RENUMBERING }, 125 { "wrureq", ICMP6_WRUREQUEST }, 126 { "wrurep", ICMP6_WRUREPLY }, 127 { "fqdnreq", ICMP6_FQDN_QUERY }, 128 { "fqdnrep", ICMP6_FQDN_REPLY }, 129 { "niqry", ICMP6_NI_QUERY }, 130 { "nirep", ICMP6_NI_REPLY }, 131 { "mtraceresp", MLD_MTRACE_RESP }, 132 { "mtrace", MLD_MTRACE } 133 }; 134 135 static const struct icmpcodeent icmp_code[] = { 136 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET }, 137 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST }, 138 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL }, 139 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT }, 140 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG }, 141 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL }, 142 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN }, 143 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN }, 144 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED }, 145 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB }, 146 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB }, 147 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET }, 148 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST }, 149 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB }, 150 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE }, 151 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF }, 152 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET }, 153 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST }, 154 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET }, 155 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST }, 156 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL }, 157 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON }, 158 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS }, 159 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS }, 160 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR }, 161 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT }, 162 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH }, 163 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX }, 164 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED }, 165 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED } 166 }; 167 168 static const struct icmpcodeent icmp6_code[] = { 169 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN }, 170 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE }, 171 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR }, 172 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE }, 173 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR }, 174 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT }, 175 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT }, 176 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY }, 177 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER }, 178 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER }, 179 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK }, 180 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER } 181 }; 182 183 const struct pf_timeout pf_timeouts[] = { 184 { "tcp.first", PFTM_TCP_FIRST_PACKET }, 185 { "tcp.opening", PFTM_TCP_OPENING }, 186 { "tcp.established", PFTM_TCP_ESTABLISHED }, 187 { "tcp.closing", PFTM_TCP_CLOSING }, 188 { "tcp.finwait", PFTM_TCP_FIN_WAIT }, 189 { "tcp.closed", PFTM_TCP_CLOSED }, 190 { "tcp.tsdiff", PFTM_TS_DIFF }, 191 { "udp.first", PFTM_UDP_FIRST_PACKET }, 192 { "udp.single", PFTM_UDP_SINGLE }, 193 { "udp.multiple", PFTM_UDP_MULTIPLE }, 194 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 195 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 196 { "other.first", PFTM_OTHER_FIRST_PACKET }, 197 { "other.single", PFTM_OTHER_SINGLE }, 198 { "other.multiple", PFTM_OTHER_MULTIPLE }, 199 { "frag", PFTM_FRAG }, 200 { "interval", PFTM_INTERVAL }, 201 { "adaptive.start", PFTM_ADAPTIVE_START }, 202 { "adaptive.end", PFTM_ADAPTIVE_END }, 203 { "src.track", PFTM_SRC_NODE }, 204 { NULL, 0 } 205 }; 206 207 const struct icmptypeent * 208 geticmptypebynumber(u_int8_t type, sa_family_t af) 209 { 210 unsigned int i; 211 212 if (af != AF_INET6) { 213 for (i=0; i < NELEM(icmp_type); i++) { 214 if (type == icmp_type[i].type) 215 return (&icmp_type[i]); 216 } 217 } else { 218 for (i=0; i < NELEM(icmp6_type); i++) { 219 if (type == icmp6_type[i].type) 220 return (&icmp6_type[i]); 221 } 222 } 223 return (NULL); 224 } 225 226 const struct icmptypeent * 227 geticmptypebyname(char *w, sa_family_t af) 228 { 229 unsigned int i; 230 231 if (af != AF_INET6) { 232 for (i=0; i < NELEM(icmp_type); i++) { 233 if (!strcmp(w, icmp_type[i].name)) 234 return (&icmp_type[i]); 235 } 236 } else { 237 for (i=0; i < NELEM(icmp6_type); i++) { 238 if (!strcmp(w, icmp6_type[i].name)) 239 return (&icmp6_type[i]); 240 } 241 } 242 return (NULL); 243 } 244 245 const struct icmpcodeent * 246 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 247 { 248 unsigned int i; 249 250 if (af != AF_INET6) { 251 for (i=0; i < NELEM(icmp_code); i++) { 252 if (type == icmp_code[i].type && 253 code == icmp_code[i].code) 254 return (&icmp_code[i]); 255 } 256 } else { 257 for (i=0; i < NELEM(icmp6_code); i++) { 258 if (type == icmp6_code[i].type && 259 code == icmp6_code[i].code) 260 return (&icmp6_code[i]); 261 } 262 } 263 return (NULL); 264 } 265 266 const struct icmpcodeent * 267 geticmpcodebyname(u_long type, char *w, sa_family_t af) 268 { 269 unsigned int i; 270 271 if (af != AF_INET6) { 272 for (i=0; i < NELEM(icmp_code); i++) { 273 if (type == icmp_code[i].type && 274 !strcmp(w, icmp_code[i].name)) 275 return (&icmp_code[i]); 276 } 277 } else { 278 for (i=0; i < NELEM(icmp6_code); i++) { 279 if (type == icmp6_code[i].type && 280 !strcmp(w, icmp6_code[i].name)) 281 return (&icmp6_code[i]); 282 } 283 } 284 return (NULL); 285 } 286 287 void 288 print_op(u_int8_t op, const char *a1, const char *a2) 289 { 290 if (op == PF_OP_IRG) 291 printf(" %s >< %s", a1, a2); 292 else if (op == PF_OP_XRG) 293 printf(" %s <> %s", a1, a2); 294 else if (op == PF_OP_EQ) 295 printf(" = %s", a1); 296 else if (op == PF_OP_NE) 297 printf(" != %s", a1); 298 else if (op == PF_OP_LT) 299 printf(" < %s", a1); 300 else if (op == PF_OP_LE) 301 printf(" <= %s", a1); 302 else if (op == PF_OP_GT) 303 printf(" > %s", a1); 304 else if (op == PF_OP_GE) 305 printf(" >= %s", a1); 306 else if (op == PF_OP_RRG) 307 printf(" %s:%s", a1, a2); 308 } 309 310 void 311 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto) 312 { 313 char a1[6], a2[6]; 314 struct servent *s; 315 316 s = getservbyport(p1, proto); 317 p1 = ntohs(p1); 318 p2 = ntohs(p2); 319 snprintf(a1, sizeof(a1), "%u", p1); 320 snprintf(a2, sizeof(a2), "%u", p2); 321 printf(" port"); 322 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 323 print_op(op, s->s_name, a2); 324 else 325 print_op(op, a1, a2); 326 } 327 328 void 329 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 330 { 331 char a1[11], a2[11]; 332 333 snprintf(a1, sizeof(a1), "%u", u1); 334 snprintf(a2, sizeof(a2), "%u", u2); 335 printf(" %s", t); 336 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 337 print_op(op, "unknown", a2); 338 else 339 print_op(op, a1, a2); 340 } 341 342 void 343 print_flags(u_int8_t f) 344 { 345 int i; 346 347 for (i = 0; tcpflags[i]; ++i) 348 if (f & (1 << i)) 349 printf("%c", tcpflags[i]); 350 } 351 352 void 353 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 354 sa_family_t af, u_int8_t proto, int verbose) 355 { 356 char buf[PF_OSFP_LEN*3]; 357 if (src->addr.type == PF_ADDR_ADDRMASK && 358 dst->addr.type == PF_ADDR_ADDRMASK && 359 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 360 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 361 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 362 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 363 !src->neg && !dst->neg && 364 !src->port_op && !dst->port_op && 365 osfp == PF_OSFP_ANY) 366 printf(" all"); 367 else { 368 printf(" from "); 369 if (src->neg) 370 printf("! "); 371 print_addr(&src->addr, af, verbose); 372 if (src->port_op) 373 print_port(src->port_op, src->port[0], 374 src->port[1], 375 proto == IPPROTO_TCP ? "tcp" : "udp"); 376 if (osfp != PF_OSFP_ANY) 377 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 378 sizeof(buf))); 379 380 printf(" to "); 381 if (dst->neg) 382 printf("! "); 383 print_addr(&dst->addr, af, verbose); 384 if (dst->port_op) 385 print_port(dst->port_op, dst->port[0], 386 dst->port[1], 387 proto == IPPROTO_TCP ? "tcp" : "udp"); 388 } 389 } 390 391 void 392 print_pool(struct pf_pool *pool, u_int16_t p1, u_int16_t p2, 393 sa_family_t af, int id) 394 { 395 struct pf_pooladdr *pooladdr; 396 397 if ((TAILQ_FIRST(&pool->list) != NULL) && 398 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 399 printf("{ "); 400 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 401 switch (id) { 402 case PF_NAT: 403 case PF_RDR: 404 case PF_BINAT: 405 print_addr(&pooladdr->addr, af, 0); 406 break; 407 case PF_PASS: 408 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 409 printf("%s", pooladdr->ifname); 410 else { 411 printf("(%s ", pooladdr->ifname); 412 print_addr(&pooladdr->addr, af, 0); 413 printf(")"); 414 } 415 break; 416 default: 417 break; 418 } 419 if (TAILQ_NEXT(pooladdr, entries) != NULL) 420 printf(", "); 421 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 422 printf(" }"); 423 } 424 switch (id) { 425 case PF_NAT: 426 if ((p1 != PF_NAT_PROXY_PORT_LOW || 427 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 428 if (p1 == p2) 429 printf(" port %u", p1); 430 else 431 printf(" port %u:%u", p1, p2); 432 } 433 break; 434 case PF_RDR: 435 if (p1) { 436 printf(" port %u", p1); 437 if (p2 && (p2 != p1)) 438 printf(":%u", p2); 439 } 440 break; 441 default: 442 break; 443 } 444 switch (pool->opts & PF_POOL_TYPEMASK) { 445 case PF_POOL_NONE: 446 break; 447 case PF_POOL_BITMASK: 448 printf(" bitmask"); 449 break; 450 case PF_POOL_RANDOM: 451 printf(" random"); 452 break; 453 case PF_POOL_SRCHASH: 454 printf(" source-hash 0x%08x%08x%08x%08x", 455 pool->key.key32[0], pool->key.key32[1], 456 pool->key.key32[2], pool->key.key32[3]); 457 break; 458 case PF_POOL_ROUNDROBIN: 459 printf(" round-robin"); 460 break; 461 } 462 if (pool->opts & PF_POOL_STICKYADDR) 463 printf(" sticky-address"); 464 if (id == PF_NAT && p1 == 0 && p2 == 0) 465 printf(" static-port"); 466 } 467 468 const char *pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 469 const char *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 470 const char *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 471 const char *pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 472 473 void 474 print_status(struct pf_status *s, int opts) 475 { 476 char statline[80]; 477 const char *running; 478 time_t runtime; 479 int i; 480 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 481 static const char hex[] = "0123456789abcdef"; 482 483 runtime = time(NULL) - s->since; 484 running = s->running ? "Enabled" : "Disabled"; 485 486 if (s->since) { 487 unsigned int sec, min, hrs, day = runtime; 488 489 sec = day % 60; 490 day /= 60; 491 min = day % 60; 492 day /= 60; 493 hrs = day % 24; 494 day /= 24; 495 snprintf(statline, sizeof(statline), 496 "Status: %s for %u days %.2u:%.2u:%.2u", 497 running, day, hrs, min, sec); 498 } else 499 snprintf(statline, sizeof(statline), "Status: %s", running); 500 printf("%-44s", statline); 501 switch (s->debug) { 502 case PF_DEBUG_NONE: 503 printf("%15s\n\n", "Debug: None"); 504 break; 505 case PF_DEBUG_URGENT: 506 printf("%15s\n\n", "Debug: Urgent"); 507 break; 508 case PF_DEBUG_MISC: 509 printf("%15s\n\n", "Debug: Misc"); 510 break; 511 case PF_DEBUG_NOISY: 512 printf("%15s\n\n", "Debug: Loud"); 513 break; 514 } 515 516 if (opts & PF_OPT_VERBOSE) { 517 printf("Hostid: 0x%08x\n", ntohl(s->hostid)); 518 519 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 520 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 521 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 522 } 523 buf[i + i] = '\0'; 524 printf("Checksum: 0x%s\n\n", buf); 525 } 526 527 if (s->ifname[0] != 0) { 528 printf("Interface Stats for %-16s %5s %16s\n", 529 s->ifname, "IPv4", "IPv6"); 530 printf(" %-25s %14llu %16llu\n", "Bytes In", 531 (unsigned long long)s->bcounters[0][0], 532 (unsigned long long)s->bcounters[1][0]); 533 printf(" %-25s %14llu %16llu\n", "Bytes Out", 534 (unsigned long long)s->bcounters[0][1], 535 (unsigned long long)s->bcounters[1][1]); 536 printf(" Packets In\n"); 537 printf(" %-23s %14llu %16llu\n", "Passed", 538 (unsigned long long)s->pcounters[0][0][PF_PASS], 539 (unsigned long long)s->pcounters[1][0][PF_PASS]); 540 printf(" %-23s %14llu %16llu\n", "Blocked", 541 (unsigned long long)s->pcounters[0][0][PF_DROP], 542 (unsigned long long)s->pcounters[1][0][PF_DROP]); 543 printf(" Packets Out\n"); 544 printf(" %-23s %14llu %16llu\n", "Passed", 545 (unsigned long long)s->pcounters[0][1][PF_PASS], 546 (unsigned long long)s->pcounters[1][1][PF_PASS]); 547 printf(" %-23s %14llu %16llu\n\n", "Blocked", 548 (unsigned long long)s->pcounters[0][1][PF_DROP], 549 (unsigned long long)s->pcounters[1][1][PF_DROP]); 550 } 551 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 552 printf(" %-25s %14u %14s\n", "current entries", s->states, ""); 553 for (i = 0; i < FCNT_MAX; i++) { 554 printf(" %-25s %14llu ", pf_fcounters[i], 555 (unsigned long long)s->fcounters[i]); 556 if (runtime > 0) 557 printf("%14.1f/s\n", 558 (double)s->fcounters[i] / (double)runtime); 559 else 560 printf("%14s\n", ""); 561 } 562 if (opts & PF_OPT_VERBOSE) { 563 printf("Source Tracking Table\n"); 564 printf(" %-25s %14u %14s\n", "current entries", 565 s->src_nodes, ""); 566 for (i = 0; i < SCNT_MAX; i++) { 567 printf(" %-25s %14lld ", pf_scounters[i], 568 (unsigned long long)s->scounters[i]); 569 if (runtime > 0) 570 printf("%14.1f/s\n", 571 (double)s->scounters[i] / (double)runtime); 572 else 573 printf("%14s\n", ""); 574 } 575 } 576 printf("Counters\n"); 577 for (i = 0; i < PFRES_MAX; i++) { 578 printf(" %-25s %14llu ", pf_reasons[i], 579 (unsigned long long)s->counters[i]); 580 if (runtime > 0) 581 printf("%14.1f/s\n", 582 (double)s->counters[i] / (double)runtime); 583 else 584 printf("%14s\n", ""); 585 } 586 if (opts & PF_OPT_VERBOSE) { 587 printf("Limit Counters\n"); 588 for (i = 0; i < LCNT_MAX; i++) { 589 printf(" %-25s %14ju ", pf_lcounters[i], 590 (uintmax_t)s->lcounters[i]); 591 if (runtime > 0) 592 printf("%14.1f/s\n", 593 (double)s->lcounters[i] / (double)runtime); 594 else 595 printf("%14s\n", ""); 596 } 597 } 598 } 599 600 void 601 print_src_node(struct pf_src_node *sn, int opts) 602 { 603 struct pf_addr_wrap aw; 604 int min, sec; 605 606 memset(&aw, 0, sizeof(aw)); 607 if (sn->af == AF_INET) 608 aw.v.a.mask.addr32[0] = 0xffffffff; 609 else 610 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 611 612 aw.v.a.addr = sn->addr; 613 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 614 printf(" -> "); 615 aw.v.a.addr = sn->raddr; 616 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 617 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 618 sn->conn, sn->conn_rate.count / 1000, 619 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 620 if (opts & PF_OPT_VERBOSE) { 621 sec = sn->creation % 60; 622 sn->creation /= 60; 623 min = sn->creation % 60; 624 sn->creation /= 60; 625 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 626 if (sn->states == 0) { 627 sec = sn->expire % 60; 628 sn->expire /= 60; 629 min = sn->expire % 60; 630 sn->expire /= 60; 631 printf(", expires in %.2u:%.2u:%.2u", 632 sn->expire, min, sec); 633 } 634 printf(", %ju pkts, %ju bytes", 635 (uintmax_t)sn->packets[0] + sn->packets[1], 636 (uintmax_t)sn->bytes[0] + sn->bytes[1]); 637 switch (sn->ruletype) { 638 case PF_NAT: 639 if (sn->rule.nr != (uint32_t)(-1)) 640 printf(", nat rule %u", sn->rule.nr); 641 break; 642 case PF_RDR: 643 if (sn->rule.nr != (uint32_t)(-1)) 644 printf(", rdr rule %u", sn->rule.nr); 645 break; 646 case PF_PASS: 647 if (sn->rule.nr != (uint32_t)(-1)) 648 printf(", filter rule %u", sn->rule.nr); 649 break; 650 } 651 printf("\n"); 652 } 653 } 654 655 void 656 print_rule(struct pf_rule *r, const char *anchor_call, int verbose) 657 { 658 static const char *actiontypes[] = { "pass", "block", "scrub", 659 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" }; 660 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 661 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 662 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 663 int i, opts; 664 665 if (verbose) 666 printf("@%d ", r->nr); 667 if (r->action > PF_NORDR) 668 printf("action(%d)", r->action); 669 else if (anchor_call[0]) { 670 if (anchor_call[0] == '_') { 671 printf("%s", anchortypes[r->action]); 672 } else 673 printf("%s \"%s\"", anchortypes[r->action], 674 anchor_call); 675 } else { 676 printf("%s", actiontypes[r->action]); 677 if (r->natpass) 678 printf(" pass"); 679 } 680 if (r->action == PF_DROP) { 681 if (r->rule_flag & PFRULE_RETURN) 682 printf(" return"); 683 else if (r->rule_flag & PFRULE_RETURNRST) { 684 if (!r->return_ttl) 685 printf(" return-rst"); 686 else 687 printf(" return-rst(ttl %d)", r->return_ttl); 688 } else if (r->rule_flag & PFRULE_RETURNICMP) { 689 const struct icmpcodeent *ic, *ic6; 690 691 ic = geticmpcodebynumber(r->return_icmp >> 8, 692 r->return_icmp & 255, AF_INET); 693 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 694 r->return_icmp6 & 255, AF_INET6); 695 696 switch (r->af) { 697 case AF_INET: 698 printf(" return-icmp"); 699 if (ic == NULL) 700 printf("(%u)", r->return_icmp & 255); 701 else 702 printf("(%s)", ic->name); 703 break; 704 case AF_INET6: 705 printf(" return-icmp6"); 706 if (ic6 == NULL) 707 printf("(%u)", r->return_icmp6 & 255); 708 else 709 printf("(%s)", ic6->name); 710 break; 711 default: 712 printf(" return-icmp"); 713 if (ic == NULL) 714 printf("(%u, ", r->return_icmp & 255); 715 else 716 printf("(%s, ", ic->name); 717 if (ic6 == NULL) 718 printf("%u)", r->return_icmp6 & 255); 719 else 720 printf("%s)", ic6->name); 721 break; 722 } 723 } else 724 printf(" drop"); 725 } 726 if (r->direction == PF_IN) 727 printf(" in"); 728 else if (r->direction == PF_OUT) 729 printf(" out"); 730 if (r->log) { 731 printf(" log"); 732 if (r->log & ~PF_LOG || r->logif) { 733 int count = 0; 734 735 printf(" ("); 736 if (r->log & PF_LOG_ALL) 737 printf("%sall", count++ ? ", " : ""); 738 if (r->log & PF_LOG_SOCKET_LOOKUP) 739 printf("%suser", count++ ? ", " : ""); 740 if (r->logif) 741 printf("%sto pflog%u", count++ ? ", " : "", 742 r->logif); 743 printf(")"); 744 } 745 } 746 if (r->quick) 747 printf(" quick"); 748 if (r->ifname[0]) { 749 if (r->ifnot) 750 printf(" on ! %s", r->ifname); 751 else 752 printf(" on %s", r->ifname); 753 } 754 if (r->rt) { 755 if (r->rt == PF_ROUTETO) 756 printf(" route-to"); 757 else if (r->rt == PF_REPLYTO) 758 printf(" reply-to"); 759 else if (r->rt == PF_DUPTO) 760 printf(" dup-to"); 761 else if (r->rt == PF_FASTROUTE) 762 printf(" fastroute"); 763 if (r->rt != PF_FASTROUTE) { 764 printf(" "); 765 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 766 } 767 } 768 if (r->af) { 769 if (r->af == AF_INET) 770 printf(" inet"); 771 else 772 printf(" inet6"); 773 } 774 if (r->proto) { 775 struct protoent *p; 776 777 if ((p = getprotobynumber(r->proto)) != NULL) 778 printf(" proto %s", p->p_name); 779 else 780 printf(" proto %u", r->proto); 781 } 782 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 783 verbose); 784 if (r->uid.op) 785 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 786 UID_MAX); 787 if (r->gid.op) 788 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 789 GID_MAX); 790 if (r->flags || r->flagset) { 791 printf(" flags "); 792 print_flags(r->flags); 793 printf("/"); 794 print_flags(r->flagset); 795 } else if (r->action == PF_PASS && 796 (!r->proto || r->proto == IPPROTO_TCP) && 797 !(r->rule_flag & PFRULE_FRAGMENT) && 798 !anchor_call[0] && r->keep_state) 799 printf(" flags any"); 800 if (r->type) { 801 const struct icmptypeent *it; 802 803 it = geticmptypebynumber(r->type-1, r->af); 804 if (r->af != AF_INET6) 805 printf(" icmp-type"); 806 else 807 printf(" icmp6-type"); 808 if (it != NULL) 809 printf(" %s", it->name); 810 else 811 printf(" %u", r->type-1); 812 if (r->code) { 813 const struct icmpcodeent *ic; 814 815 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 816 if (ic != NULL) 817 printf(" code %s", ic->name); 818 else 819 printf(" code %u", r->code-1); 820 } 821 } 822 if (r->tos) 823 printf(" tos 0x%2.2x", r->tos); 824 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 825 printf(" no state"); 826 else if (r->keep_state == PF_STATE_NORMAL) 827 printf(" keep state"); 828 else if (r->keep_state == PF_STATE_MODULATE) 829 printf(" modulate state"); 830 else if (r->keep_state == PF_STATE_SYNPROXY) 831 printf(" synproxy state"); 832 if (r->prob) { 833 char buf[20]; 834 835 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 836 for (i = strlen(buf)-1; i > 0; i--) { 837 if (buf[i] == '0') 838 buf[i] = '\0'; 839 else { 840 if (buf[i] == '.') 841 buf[i] = '\0'; 842 break; 843 } 844 } 845 printf(" probability %s%%", buf); 846 } 847 opts = 0; 848 if (r->max_states || r->max_src_nodes || r->max_src_states) 849 opts = 1; 850 if (r->pickup_mode) 851 opts = 1; 852 if (r->rule_flag & PFRULE_NOSYNC) 853 opts = 1; 854 if (r->rule_flag & PFRULE_SRCTRACK) 855 opts = 1; 856 if (r->rule_flag & PFRULE_IFBOUND) 857 opts = 1; 858 if (r->rule_flag & PFRULE_STATESLOPPY) 859 opts = 1; 860 for (i = 0; !opts && i < PFTM_MAX; ++i) 861 if (r->timeout[i]) 862 opts = 1; 863 if (opts) { 864 printf(" ("); 865 switch(r->pickup_mode) { 866 case PF_PICKUPS_UNSPECIFIED: 867 break; 868 case PF_PICKUPS_DISABLED: 869 printf("no-pickups"); 870 opts = 0; 871 break; 872 case PF_PICKUPS_HASHONLY: 873 printf("hash-only"); 874 opts = 0; 875 break; 876 case PF_PICKUPS_ENABLED: 877 printf("pickups"); 878 opts = 0; 879 break; 880 default: 881 printf("unknown-pickups-mode-%d", r->pickup_mode); 882 break; 883 } 884 if (r->max_states) { 885 if (!opts) 886 printf(", "); 887 printf("max %u", r->max_states); 888 opts = 0; 889 } 890 if (r->rule_flag & PFRULE_NOSYNC) { 891 if (!opts) 892 printf(", "); 893 printf("no-sync"); 894 opts = 0; 895 } 896 if (r->rule_flag & PFRULE_SRCTRACK) { 897 if (!opts) 898 printf(", "); 899 printf("source-track"); 900 if (r->rule_flag & PFRULE_RULESRCTRACK) 901 printf(" rule"); 902 else 903 printf(" global"); 904 opts = 0; 905 } 906 if (r->max_src_states) { 907 if (!opts) 908 printf(", "); 909 printf("max-src-states %u", r->max_src_states); 910 opts = 0; 911 } 912 if (r->max_src_conn) { 913 if (!opts) 914 printf(", "); 915 printf("max-src-conn %u", r->max_src_conn); 916 opts = 0; 917 } 918 if (r->max_src_conn_rate.limit) { 919 if (!opts) 920 printf(", "); 921 printf("max-src-conn-rate %u/%u", 922 r->max_src_conn_rate.limit, 923 r->max_src_conn_rate.seconds); 924 opts = 0; 925 } 926 if (r->max_src_nodes) { 927 if (!opts) 928 printf(", "); 929 printf("max-src-nodes %u", r->max_src_nodes); 930 opts = 0; 931 } 932 if (r->overload_tblname[0]) { 933 if (!opts) 934 printf(", "); 935 printf("overload <%s>", r->overload_tblname); 936 if (r->flush) 937 printf(" flush"); 938 if (r->flush & PF_FLUSH_GLOBAL) 939 printf(" global"); 940 } 941 if (r->rule_flag & PFRULE_IFBOUND) { 942 if (!opts) 943 printf(", "); 944 printf("if-bound"); 945 opts = 0; 946 } 947 if (r->rule_flag & PFRULE_STATESLOPPY) { 948 if (!opts) 949 printf(", "); 950 printf("sloppy"); 951 opts = 0; 952 } 953 for (i = 0; i < PFTM_MAX; ++i) 954 if (r->timeout[i]) { 955 int j; 956 957 if (!opts) 958 printf(", "); 959 opts = 0; 960 for (j = 0; pf_timeouts[j].name != NULL; 961 ++j) 962 if (pf_timeouts[j].timeout == i) 963 break; 964 printf("%s %u", pf_timeouts[j].name == NULL ? 965 "inv.timeout" : pf_timeouts[j].name, 966 r->timeout[i]); 967 } 968 printf(")"); 969 } 970 if (r->rule_flag & PFRULE_FRAGMENT) 971 printf(" fragment"); 972 if (r->rule_flag & PFRULE_NODF) 973 printf(" no-df"); 974 if (r->rule_flag & PFRULE_RANDOMID) 975 printf(" random-id"); 976 if (r->min_ttl) 977 printf(" min-ttl %d", r->min_ttl); 978 if (r->max_mss) 979 printf(" max-mss %d", r->max_mss); 980 if (r->rule_flag & PFRULE_SET_TOS) 981 printf(" set-tos 0x%2.2x", r->set_tos); 982 if (r->allow_opts) 983 printf(" allow-opts"); 984 if (r->action == PF_SCRUB) { 985 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 986 printf(" reassemble tcp"); 987 988 if (r->rule_flag & PFRULE_FRAGDROP) 989 printf(" fragment drop-ovl"); 990 else if (r->rule_flag & PFRULE_FRAGCROP) 991 printf(" fragment crop"); 992 else 993 printf(" fragment reassemble"); 994 } 995 if (r->label[0]) 996 printf(" label \"%s\"", r->label); 997 if (r->qname[0] && r->pqname[0]) 998 printf(" queue(%s, %s)", r->qname, r->pqname); 999 else if (r->qname[0]) 1000 printf(" queue %s", r->qname); 1001 if (r->tagname[0]) 1002 printf(" tag %s", r->tagname); 1003 if (r->match_tagname[0]) { 1004 if (r->match_tag_not) 1005 printf(" !"); 1006 printf(" tagged %s", r->match_tagname); 1007 } 1008 if (r->rtableid != -1) 1009 printf(" rtable %u", r->rtableid); 1010 if (r->divert.port) { 1011 if (PF_AZERO(&r->divert.addr, r->af)) { 1012 printf(" divert-reply"); 1013 } else { 1014 /* XXX cut&paste from print_addr */ 1015 char buf[48]; 1016 1017 printf(" divert-to "); 1018 if (inet_ntop(r->af, &r->divert.addr, buf, 1019 sizeof(buf)) == NULL) 1020 printf("?"); 1021 else 1022 printf("%s", buf); 1023 printf(" port %u", ntohs(r->divert.port)); 1024 } 1025 } 1026 if (!anchor_call[0] && (r->action == PF_NAT || 1027 r->action == PF_BINAT || r->action == PF_RDR)) { 1028 printf(" -> "); 1029 print_pool(&r->rpool, r->rpool.proxy_port[0], 1030 r->rpool.proxy_port[1], r->af, r->action); 1031 } 1032 } 1033 1034 void 1035 print_tabledef(const char *name, int flags, int addrs, 1036 struct node_tinithead *nodes) 1037 { 1038 struct node_tinit *ti, *nti; 1039 struct node_host *h; 1040 1041 printf("table <%s>", name); 1042 if (flags & PFR_TFLAG_CONST) 1043 printf(" const"); 1044 if (flags & PFR_TFLAG_PERSIST) 1045 printf(" persist"); 1046 if (flags & PFR_TFLAG_COUNTERS) 1047 printf(" counters"); 1048 SIMPLEQ_FOREACH(ti, nodes, entries) { 1049 if (ti->file) { 1050 printf(" file \"%s\"", ti->file); 1051 continue; 1052 } 1053 printf(" {"); 1054 for (;;) { 1055 for (h = ti->host; h != NULL; h = h->next) { 1056 printf(h->not ? " !" : " "); 1057 print_addr(&h->addr, h->af, 0); 1058 } 1059 nti = SIMPLEQ_NEXT(ti, entries); 1060 if (nti != NULL && nti->file == NULL) 1061 ti = nti; /* merge lists */ 1062 else 1063 break; 1064 } 1065 printf(" }"); 1066 } 1067 if (addrs && SIMPLEQ_EMPTY(nodes)) 1068 printf(" { }"); 1069 printf("\n"); 1070 } 1071 1072 int 1073 parse_flags(const char *s) 1074 { 1075 const char *p, *q; 1076 u_int8_t f = 0; 1077 1078 for (p = s; *p; p++) { 1079 if ((q = strchr(tcpflags, *p)) == NULL) 1080 return -1; 1081 else 1082 f |= 1 << (q - tcpflags); 1083 } 1084 return (f ? f : PF_TH_ALL); 1085 } 1086 1087 void 1088 set_ipmask(struct node_host *h, u_int8_t b) 1089 { 1090 struct pf_addr *m, *n; 1091 int i, j = 0; 1092 1093 m = &h->addr.v.a.mask; 1094 memset(m, 0, sizeof(*m)); 1095 1096 while (b >= 32) { 1097 m->addr32[j++] = 0xffffffff; 1098 b -= 32; 1099 } 1100 for (i = 31; i > 31-b; --i) 1101 m->addr32[j] |= (1 << i); 1102 if (b) 1103 m->addr32[j] = htonl(m->addr32[j]); 1104 1105 /* Mask off bits of the address that will never be used. */ 1106 n = &h->addr.v.a.addr; 1107 if (h->addr.type == PF_ADDR_ADDRMASK) 1108 for (i = 0; i < 4; i++) 1109 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1110 } 1111 1112 int 1113 check_netmask(struct node_host *h, sa_family_t af) 1114 { 1115 struct node_host *n = NULL; 1116 struct pf_addr *m; 1117 1118 for (n = h; n != NULL; n = n->next) { 1119 if (h->addr.type == PF_ADDR_TABLE) 1120 continue; 1121 m = &h->addr.v.a.mask; 1122 /* fix up netmask for dynaddr */ 1123 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1124 unmask(m, AF_INET6) > 32) 1125 set_ipmask(n, 32); 1126 /* netmasks > 32 bit are invalid on v4 */ 1127 if (af == AF_INET && 1128 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1129 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1130 unmask(m, AF_INET6)); 1131 return (1); 1132 } 1133 } 1134 return (0); 1135 } 1136 1137 /* interface lookup routines */ 1138 1139 struct node_host *iftab; 1140 1141 void 1142 ifa_load(void) 1143 { 1144 struct ifaddrs *ifap, *ifa; 1145 struct node_host *n = NULL, *h = NULL; 1146 1147 if (getifaddrs(&ifap) < 0) 1148 err(1, "getifaddrs"); 1149 1150 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1151 if (!(ifa->ifa_addr->sa_family == AF_INET || 1152 ifa->ifa_addr->sa_family == AF_INET6 || 1153 ifa->ifa_addr->sa_family == AF_LINK)) 1154 continue; 1155 n = calloc(1, sizeof(struct node_host)); 1156 if (n == NULL) 1157 err(1, "address: calloc"); 1158 n->af = ifa->ifa_addr->sa_family; 1159 n->ifa_flags = ifa->ifa_flags; 1160 #ifdef __KAME__ 1161 if (n->af == AF_INET6 && 1162 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1163 ifa->ifa_addr)->sin6_addr) && 1164 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1165 0) { 1166 struct sockaddr_in6 *sin6; 1167 1168 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1169 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1170 sin6->sin6_addr.s6_addr[3]; 1171 sin6->sin6_addr.s6_addr[2] = 0; 1172 sin6->sin6_addr.s6_addr[3] = 0; 1173 } 1174 #endif 1175 n->ifindex = 0; 1176 if (n->af == AF_INET) { 1177 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1178 ifa->ifa_addr)->sin_addr.s_addr, 1179 sizeof(struct in_addr)); 1180 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1181 ifa->ifa_netmask)->sin_addr.s_addr, 1182 sizeof(struct in_addr)); 1183 if (ifa->ifa_broadaddr != NULL) 1184 memcpy(&n->bcast, &((struct sockaddr_in *) 1185 ifa->ifa_broadaddr)->sin_addr.s_addr, 1186 sizeof(struct in_addr)); 1187 if (ifa->ifa_dstaddr != NULL) 1188 memcpy(&n->peer, &((struct sockaddr_in *) 1189 ifa->ifa_dstaddr)->sin_addr.s_addr, 1190 sizeof(struct in_addr)); 1191 } else if (n->af == AF_INET6) { 1192 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1193 ifa->ifa_addr)->sin6_addr.s6_addr, 1194 sizeof(struct in6_addr)); 1195 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1196 ifa->ifa_netmask)->sin6_addr.s6_addr, 1197 sizeof(struct in6_addr)); 1198 if (ifa->ifa_broadaddr != NULL) 1199 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1200 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1201 sizeof(struct in6_addr)); 1202 if (ifa->ifa_dstaddr != NULL) 1203 memcpy(&n->peer, &((struct sockaddr_in6 *) 1204 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1205 sizeof(struct in6_addr)); 1206 n->ifindex = ((struct sockaddr_in6 *) 1207 ifa->ifa_addr)->sin6_scope_id; 1208 } 1209 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1210 err(1, "ifa_load: strdup"); 1211 n->next = NULL; 1212 n->tail = n; 1213 if (h == NULL) 1214 h = n; 1215 else { 1216 h->tail->next = n; 1217 h->tail = n; 1218 } 1219 } 1220 1221 iftab = h; 1222 freeifaddrs(ifap); 1223 } 1224 1225 struct node_host * 1226 ifa_exists(const char *ifa_name) 1227 { 1228 struct node_host *n; 1229 struct ifgroupreq ifgr; 1230 int s; 1231 1232 if (iftab == NULL) 1233 ifa_load(); 1234 1235 /* check wether this is a group */ 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 1251 for (n = iftab; n; n = n->next) { 1252 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1253 return (n); 1254 } 1255 1256 return (NULL); 1257 } 1258 1259 struct node_host * 1260 ifa_grouplookup(const char *ifa_name, int flags) 1261 { 1262 struct ifg_req *ifg; 1263 struct ifgroupreq ifgr; 1264 int s; 1265 size_t len; 1266 struct node_host *n, *h = NULL; 1267 1268 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) 1269 err(1, "socket"); 1270 bzero(&ifgr, sizeof(ifgr)); 1271 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1272 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) { 1273 close(s); 1274 return (NULL); 1275 } 1276 1277 len = ifgr.ifgr_len; 1278 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1279 err(1, "calloc"); 1280 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1281 err(1, "SIOCGIFGMEMB"); 1282 1283 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1284 ifg++) { 1285 len -= sizeof(struct ifg_req); 1286 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1287 continue; 1288 if (h == NULL) 1289 h = n; 1290 else { 1291 h->tail->next = n; 1292 h->tail = n->tail; 1293 } 1294 } 1295 free(ifgr.ifgr_groups); 1296 close(s); 1297 1298 return (h); 1299 } 1300 1301 struct node_host * 1302 ifa_lookup(const char *ifa_name, int flags) 1303 { 1304 struct node_host *p = NULL, *h = NULL, *n = NULL; 1305 int got4 = 0, got6 = 0; 1306 const char *last_if = NULL; 1307 1308 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1309 return (h); 1310 1311 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1312 ifa_name = NULL; 1313 1314 if (iftab == NULL) 1315 ifa_load(); 1316 1317 for (p = iftab; p; p = p->next) { 1318 if (ifa_skip_if(ifa_name, p)) 1319 continue; 1320 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1321 continue; 1322 if ((flags & PFI_AFLAG_BROADCAST) && 1323 !(p->ifa_flags & IFF_BROADCAST)) 1324 continue; 1325 if ((flags & PFI_AFLAG_PEER) && 1326 !(p->ifa_flags & IFF_POINTOPOINT)) 1327 continue; 1328 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1329 continue; 1330 if (last_if == NULL || strcmp(last_if, p->ifname)) 1331 got4 = got6 = 0; 1332 last_if = p->ifname; 1333 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1334 continue; 1335 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1336 continue; 1337 if (p->af == AF_INET) 1338 got4 = 1; 1339 else 1340 got6 = 1; 1341 n = calloc(1, sizeof(struct node_host)); 1342 if (n == NULL) 1343 err(1, "address: calloc"); 1344 n->af = p->af; 1345 if (flags & PFI_AFLAG_BROADCAST) 1346 memcpy(&n->addr.v.a.addr, &p->bcast, 1347 sizeof(struct pf_addr)); 1348 else if (flags & PFI_AFLAG_PEER) 1349 memcpy(&n->addr.v.a.addr, &p->peer, 1350 sizeof(struct pf_addr)); 1351 else 1352 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1353 sizeof(struct pf_addr)); 1354 if (flags & PFI_AFLAG_NETWORK) 1355 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1356 else { 1357 if (n->af == AF_INET) { 1358 if (p->ifa_flags & IFF_LOOPBACK && 1359 p->ifa_flags & IFF_LINK1) 1360 memcpy(&n->addr.v.a.mask, 1361 &p->addr.v.a.mask, 1362 sizeof(struct pf_addr)); 1363 else 1364 set_ipmask(n, 32); 1365 } else 1366 set_ipmask(n, 128); 1367 } 1368 n->ifindex = p->ifindex; 1369 1370 n->next = NULL; 1371 n->tail = n; 1372 if (h == NULL) 1373 h = n; 1374 else { 1375 h->tail->next = n; 1376 h->tail = n; 1377 } 1378 } 1379 return (h); 1380 } 1381 1382 int 1383 ifa_skip_if(const char *filter, struct node_host *p) 1384 { 1385 int n; 1386 1387 if (p->af != AF_INET && p->af != AF_INET6) 1388 return (1); 1389 if (filter == NULL || !*filter) 1390 return (0); 1391 if (!strcmp(p->ifname, filter)) 1392 return (0); /* exact match */ 1393 n = strlen(filter); 1394 if (n < 1 || n >= IFNAMSIZ) 1395 return (1); /* sanity check */ 1396 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1397 return (1); /* only do exact match in that case */ 1398 if (strncmp(p->ifname, filter, n)) 1399 return (1); /* prefix doesn't match */ 1400 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1401 } 1402 1403 1404 struct node_host * 1405 host(const char *s) 1406 { 1407 struct node_host *h = NULL; 1408 int mask, v4mask, v6mask, cont = 1; 1409 char *p, *q, *ps; 1410 1411 if ((p = strrchr(s, '/')) != NULL) { 1412 mask = strtol(p+1, &q, 0); 1413 if (!q || *q || mask > 128 || q == (p+1)) { 1414 fprintf(stderr, "invalid netmask '%s'\n", p); 1415 return (NULL); 1416 } 1417 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1418 err(1, "host: malloc"); 1419 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1420 v4mask = v6mask = mask; 1421 } else { 1422 if ((ps = strdup(s)) == NULL) 1423 err(1, "host: strdup"); 1424 v4mask = 32; 1425 v6mask = 128; 1426 mask = -1; 1427 } 1428 1429 /* interface with this name exists? */ 1430 if (cont && (h = host_if(ps, mask)) != NULL) 1431 cont = 0; 1432 1433 /* IPv4 address? */ 1434 if (cont && (h = host_v4(s)) != NULL) 1435 cont = 0; 1436 1437 /* IPv6 address? */ 1438 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1439 cont = 0; 1440 1441 /* dns lookup */ 1442 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1443 cont = 0; 1444 free(ps); 1445 1446 if (h == NULL || cont == 1) { 1447 fprintf(stderr, "no IP address found for %s\n", s); 1448 return (NULL); 1449 } 1450 return (h); 1451 } 1452 1453 struct node_host * 1454 host_if(const char *s, int mask) 1455 { 1456 struct node_host *n, *h = NULL; 1457 char *p, *ps; 1458 int flags = 0; 1459 1460 if ((ps = strdup(s)) == NULL) 1461 err(1, "host_if: strdup"); 1462 while ((p = strrchr(ps, ':')) != NULL) { 1463 if (!strcmp(p+1, "network")) 1464 flags |= PFI_AFLAG_NETWORK; 1465 else if (!strcmp(p+1, "broadcast")) 1466 flags |= PFI_AFLAG_BROADCAST; 1467 else if (!strcmp(p+1, "peer")) 1468 flags |= PFI_AFLAG_PEER; 1469 else if (!strcmp(p+1, "0")) 1470 flags |= PFI_AFLAG_NOALIAS; 1471 else { 1472 free(ps); 1473 return (NULL); 1474 } 1475 *p = '\0'; 1476 } 1477 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1478 fprintf(stderr, "illegal combination of interface modifiers\n"); 1479 free(ps); 1480 return (NULL); 1481 } 1482 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1483 fprintf(stderr, "network or broadcast lookup, but " 1484 "extra netmask given\n"); 1485 free(ps); 1486 return (NULL); 1487 } 1488 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1489 /* interface with this name exists */ 1490 h = ifa_lookup(ps, flags); 1491 for (n = h; n != NULL && mask > -1; n = n->next) 1492 set_ipmask(n, mask); 1493 } 1494 1495 free(ps); 1496 return (h); 1497 } 1498 1499 static struct node_host * 1500 host_v4(const char *s) 1501 { 1502 struct node_host *h = NULL; 1503 struct in_addr ina; 1504 int bits = 32; 1505 1506 memset(&ina, 0, sizeof(struct in_addr)); 1507 if (strrchr(s, '/') != NULL) { 1508 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1509 return (NULL); 1510 } else { 1511 if (inet_pton(AF_INET, s, &ina) != 1) 1512 return (NULL); 1513 } 1514 1515 h = calloc(1, sizeof(struct node_host)); 1516 if (h == NULL) 1517 err(1, "address: calloc"); 1518 h->ifname = NULL; 1519 h->af = AF_INET; 1520 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1521 set_ipmask(h, bits); 1522 h->next = NULL; 1523 h->tail = h; 1524 1525 return (h); 1526 } 1527 1528 struct node_host * 1529 host_v6(const char *s, int mask) 1530 { 1531 struct addrinfo hints, *res; 1532 struct node_host *h = NULL; 1533 1534 memset(&hints, 0, sizeof(hints)); 1535 hints.ai_family = AF_INET6; 1536 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1537 hints.ai_flags = AI_NUMERICHOST; 1538 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1539 h = calloc(1, sizeof(struct node_host)); 1540 if (h == NULL) 1541 err(1, "address: calloc"); 1542 h->ifname = NULL; 1543 h->af = AF_INET6; 1544 memcpy(&h->addr.v.a.addr, 1545 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1546 sizeof(h->addr.v.a.addr)); 1547 h->ifindex = 1548 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1549 set_ipmask(h, mask); 1550 freeaddrinfo(res); 1551 h->next = NULL; 1552 h->tail = h; 1553 } 1554 1555 return (h); 1556 } 1557 1558 struct node_host * 1559 host_dns(const char *s, int v4mask, int v6mask) 1560 { 1561 struct addrinfo hints, *res0, *res; 1562 struct node_host *n, *h = NULL; 1563 int error, noalias = 0; 1564 int got4 = 0, got6 = 0; 1565 char *p, *ps; 1566 1567 if ((ps = strdup(s)) == NULL) 1568 err(1, "host_dns: strdup"); 1569 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1570 noalias = 1; 1571 *p = '\0'; 1572 } 1573 memset(&hints, 0, sizeof(hints)); 1574 hints.ai_family = PF_UNSPEC; 1575 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1576 error = getaddrinfo(ps, NULL, &hints, &res0); 1577 if (error) { 1578 free(ps); 1579 return (h); 1580 } 1581 1582 for (res = res0; res; res = res->ai_next) { 1583 if (res->ai_family != AF_INET && 1584 res->ai_family != AF_INET6) 1585 continue; 1586 if (noalias) { 1587 if (res->ai_family == AF_INET) { 1588 if (got4) 1589 continue; 1590 got4 = 1; 1591 } else { 1592 if (got6) 1593 continue; 1594 got6 = 1; 1595 } 1596 } 1597 n = calloc(1, sizeof(struct node_host)); 1598 if (n == NULL) 1599 err(1, "host_dns: calloc"); 1600 n->ifname = NULL; 1601 n->af = res->ai_family; 1602 if (res->ai_family == AF_INET) { 1603 memcpy(&n->addr.v.a.addr, 1604 &((struct sockaddr_in *) 1605 res->ai_addr)->sin_addr.s_addr, 1606 sizeof(struct in_addr)); 1607 set_ipmask(n, v4mask); 1608 } else { 1609 memcpy(&n->addr.v.a.addr, 1610 &((struct sockaddr_in6 *) 1611 res->ai_addr)->sin6_addr.s6_addr, 1612 sizeof(struct in6_addr)); 1613 n->ifindex = 1614 ((struct sockaddr_in6 *) 1615 res->ai_addr)->sin6_scope_id; 1616 set_ipmask(n, v6mask); 1617 } 1618 n->next = NULL; 1619 n->tail = n; 1620 if (h == NULL) 1621 h = n; 1622 else { 1623 h->tail->next = n; 1624 h->tail = n; 1625 } 1626 } 1627 freeaddrinfo(res0); 1628 free(ps); 1629 1630 return (h); 1631 } 1632 1633 /* 1634 * convert a hostname to a list of addresses and put them in the given buffer. 1635 * test: 1636 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1637 */ 1638 int 1639 append_addr(struct pfr_buffer *b, char *s, int test) 1640 { 1641 char *r; 1642 struct node_host *h, *n; 1643 int rv, not = 0; 1644 1645 for (r = s; *r == '!'; r++) 1646 not = !not; 1647 if ((n = host(r)) == NULL) { 1648 errno = 0; 1649 return (-1); 1650 } 1651 rv = append_addr_host(b, n, test, not); 1652 do { 1653 h = n; 1654 n = n->next; 1655 free(h); 1656 } while (n != NULL); 1657 return (rv); 1658 } 1659 1660 /* 1661 * same as previous function, but with a pre-parsed input and the ability 1662 * to "negate" the result. Does not free the node_host list. 1663 * not: 1664 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1665 */ 1666 int 1667 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1668 { 1669 int bits; 1670 struct pfr_addr addr; 1671 1672 do { 1673 bzero(&addr, sizeof(addr)); 1674 addr.pfra_not = n->not ^ not; 1675 addr.pfra_af = n->af; 1676 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1677 switch (n->af) { 1678 case AF_INET: 1679 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1680 bits = 32; 1681 break; 1682 case AF_INET6: 1683 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1684 sizeof(struct in6_addr)); 1685 bits = 128; 1686 break; 1687 default: 1688 errno = EINVAL; 1689 return (-1); 1690 } 1691 if ((test && (not || addr.pfra_net != bits)) || 1692 addr.pfra_net > bits) { 1693 errno = EINVAL; 1694 return (-1); 1695 } 1696 if (pfr_buf_add(b, &addr)) 1697 return (-1); 1698 } while ((n = n->next) != NULL); 1699 1700 return (0); 1701 } 1702 1703 int 1704 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1705 { 1706 struct pfioc_trans_e trans; 1707 1708 bzero(&trans, sizeof(trans)); 1709 trans.rs_num = rs_num; 1710 if (strlcpy(trans.anchor, anchor, 1711 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1712 errx(1, "pfctl_add_trans: strlcpy"); 1713 1714 return pfr_buf_add(buf, &trans); 1715 } 1716 1717 u_int32_t 1718 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1719 { 1720 const struct pfioc_trans_e *p; 1721 1722 PFRB_FOREACH(p, buf) 1723 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1724 return (p->ticket); 1725 errx(1, "pfctl_get_ticket: assertion failed"); 1726 } 1727 1728 int 1729 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1730 { 1731 struct pfioc_trans trans; 1732 1733 bzero(&trans, sizeof(trans)); 1734 trans.size = buf->pfrb_size - from; 1735 trans.esize = sizeof(struct pfioc_trans_e); 1736 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1737 return ioctl(dev, cmd, &trans); 1738 } 1739