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/types.h> 35 #include <sys/ioctl.h> 36 #include <sys/socket.h> 37 #include <sys/param.h> 38 #include <net/if.h> 39 #include <netinet/in.h> 40 #include <netinet/in_systm.h> 41 #include <netinet/ip.h> 42 #include <netinet/ip_icmp.h> 43 #include <netinet/icmp6.h> 44 #include <net/pf/pfvar.h> 45 #include <arpa/inet.h> 46 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <ctype.h> 51 #include <netdb.h> 52 #include <stdarg.h> 53 #include <errno.h> 54 #include <err.h> 55 #include <ifaddrs.h> 56 #include <unistd.h> 57 58 #include "pfctl_parser.h" 59 #include "pfctl.h" 60 61 void print_op (u_int8_t, const char *, const char *); 62 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *); 63 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned); 64 void print_flags (u_int8_t); 65 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 66 struct pf_rule_addr *, u_int8_t, u_int8_t, int); 67 int ifa_skip_if(const char *filter, struct node_host *p); 68 69 struct node_host *ifa_grouplookup(const char *, int); 70 struct node_host *host_if(const char *, int); 71 static struct node_host *host_v4(const char *); 72 struct node_host *host_v6(const char *, int); 73 struct node_host *host_dns(const char *, int, int); 74 75 const char *tcpflags = "FSRPAUEW"; 76 77 static const struct icmptypeent icmp_type[] = { 78 { "echoreq", ICMP_ECHO }, 79 { "echorep", ICMP_ECHOREPLY }, 80 { "unreach", ICMP_UNREACH }, 81 { "squench", ICMP_SOURCEQUENCH }, 82 { "redir", ICMP_REDIRECT }, 83 { "althost", ICMP_ALTHOSTADDR }, 84 { "routeradv", ICMP_ROUTERADVERT }, 85 { "routersol", ICMP_ROUTERSOLICIT }, 86 { "timex", ICMP_TIMXCEED }, 87 { "paramprob", ICMP_PARAMPROB }, 88 { "timereq", ICMP_TSTAMP }, 89 { "timerep", ICMP_TSTAMPREPLY }, 90 { "inforeq", ICMP_IREQ }, 91 { "inforep", ICMP_IREQREPLY }, 92 { "maskreq", ICMP_MASKREQ }, 93 { "maskrep", ICMP_MASKREPLY }, 94 { "trace", ICMP_TRACEROUTE }, 95 { "dataconv", ICMP_DATACONVERR }, 96 { "mobredir", ICMP_MOBILE_REDIRECT }, 97 { "ipv6-where", ICMP_IPV6_WHEREAREYOU }, 98 { "ipv6-here", ICMP_IPV6_IAMHERE }, 99 { "mobregreq", ICMP_MOBILE_REGREQUEST }, 100 { "mobregrep", ICMP_MOBILE_REGREPLY }, 101 { "skip", ICMP_SKIP }, 102 { "photuris", ICMP_PHOTURIS } 103 }; 104 105 static const struct icmptypeent icmp6_type[] = { 106 { "unreach", ICMP6_DST_UNREACH }, 107 { "toobig", ICMP6_PACKET_TOO_BIG }, 108 { "timex", ICMP6_TIME_EXCEEDED }, 109 { "paramprob", ICMP6_PARAM_PROB }, 110 { "echoreq", ICMP6_ECHO_REQUEST }, 111 { "echorep", ICMP6_ECHO_REPLY }, 112 { "groupqry", ICMP6_MEMBERSHIP_QUERY }, 113 { "listqry", MLD_LISTENER_QUERY }, 114 { "grouprep", ICMP6_MEMBERSHIP_REPORT }, 115 { "listenrep", MLD_LISTENER_REPORT }, 116 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION }, 117 { "listendone", MLD_LISTENER_DONE }, 118 { "routersol", ND_ROUTER_SOLICIT }, 119 { "routeradv", ND_ROUTER_ADVERT }, 120 { "neighbrsol", ND_NEIGHBOR_SOLICIT }, 121 { "neighbradv", ND_NEIGHBOR_ADVERT }, 122 { "redir", ND_REDIRECT }, 123 { "routrrenum", ICMP6_ROUTER_RENUMBERING }, 124 { "wrureq", ICMP6_WRUREQUEST }, 125 { "wrurep", ICMP6_WRUREPLY }, 126 { "fqdnreq", ICMP6_FQDN_QUERY }, 127 { "fqdnrep", ICMP6_FQDN_REPLY }, 128 { "niqry", ICMP6_NI_QUERY }, 129 { "nirep", ICMP6_NI_REPLY }, 130 { "mtraceresp", MLD_MTRACE_RESP }, 131 { "mtrace", MLD_MTRACE } 132 }; 133 134 static const struct icmpcodeent icmp_code[] = { 135 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET }, 136 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST }, 137 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL }, 138 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT }, 139 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG }, 140 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL }, 141 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN }, 142 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN }, 143 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED }, 144 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB }, 145 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB }, 146 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET }, 147 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST }, 148 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB }, 149 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE }, 150 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF }, 151 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET }, 152 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST }, 153 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET }, 154 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST }, 155 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL }, 156 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON }, 157 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS }, 158 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS }, 159 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR }, 160 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT }, 161 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH }, 162 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX }, 163 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED }, 164 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED } 165 }; 166 167 static const struct icmpcodeent icmp6_code[] = { 168 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN }, 169 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE }, 170 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR }, 171 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE }, 172 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR }, 173 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT }, 174 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT }, 175 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY }, 176 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER }, 177 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER }, 178 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK }, 179 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER } 180 }; 181 182 const struct pf_timeout pf_timeouts[] = { 183 { "tcp.first", PFTM_TCP_FIRST_PACKET }, 184 { "tcp.opening", PFTM_TCP_OPENING }, 185 { "tcp.established", PFTM_TCP_ESTABLISHED }, 186 { "tcp.closing", PFTM_TCP_CLOSING }, 187 { "tcp.finwait", PFTM_TCP_FIN_WAIT }, 188 { "tcp.closed", PFTM_TCP_CLOSED }, 189 { "tcp.tsdiff", PFTM_TS_DIFF }, 190 { "udp.first", PFTM_UDP_FIRST_PACKET }, 191 { "udp.single", PFTM_UDP_SINGLE }, 192 { "udp.multiple", PFTM_UDP_MULTIPLE }, 193 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 194 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 195 { "other.first", PFTM_OTHER_FIRST_PACKET }, 196 { "other.single", PFTM_OTHER_SINGLE }, 197 { "other.multiple", PFTM_OTHER_MULTIPLE }, 198 { "frag", PFTM_FRAG }, 199 { "interval", PFTM_INTERVAL }, 200 { "adaptive.start", PFTM_ADAPTIVE_START }, 201 { "adaptive.end", PFTM_ADAPTIVE_END }, 202 { "src.track", PFTM_SRC_NODE }, 203 { NULL, 0 } 204 }; 205 206 const struct icmptypeent * 207 geticmptypebynumber(u_int8_t type, sa_family_t af) 208 { 209 unsigned int i; 210 211 if (af != AF_INET6) { 212 for (i=0; i < NELEM(icmp_type); i++) { 213 if (type == icmp_type[i].type) 214 return (&icmp_type[i]); 215 } 216 } else { 217 for (i=0; i < NELEM(icmp6_type); i++) { 218 if (type == icmp6_type[i].type) 219 return (&icmp6_type[i]); 220 } 221 } 222 return (NULL); 223 } 224 225 const struct icmptypeent * 226 geticmptypebyname(char *w, sa_family_t af) 227 { 228 unsigned int i; 229 230 if (af != AF_INET6) { 231 for (i=0; i < NELEM(icmp_type); i++) { 232 if (!strcmp(w, icmp_type[i].name)) 233 return (&icmp_type[i]); 234 } 235 } else { 236 for (i=0; i < NELEM(icmp6_type); i++) { 237 if (!strcmp(w, icmp6_type[i].name)) 238 return (&icmp6_type[i]); 239 } 240 } 241 return (NULL); 242 } 243 244 const struct icmpcodeent * 245 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 246 { 247 unsigned int i; 248 249 if (af != AF_INET6) { 250 for (i=0; i < NELEM(icmp_code); i++) { 251 if (type == icmp_code[i].type && 252 code == icmp_code[i].code) 253 return (&icmp_code[i]); 254 } 255 } else { 256 for (i=0; i < NELEM(icmp6_code); i++) { 257 if (type == icmp6_code[i].type && 258 code == icmp6_code[i].code) 259 return (&icmp6_code[i]); 260 } 261 } 262 return (NULL); 263 } 264 265 const struct icmpcodeent * 266 geticmpcodebyname(u_long type, char *w, sa_family_t af) 267 { 268 unsigned int i; 269 270 if (af != AF_INET6) { 271 for (i=0; i < NELEM(icmp_code); i++) { 272 if (type == icmp_code[i].type && 273 !strcmp(w, icmp_code[i].name)) 274 return (&icmp_code[i]); 275 } 276 } else { 277 for (i=0; i < NELEM(icmp6_code); i++) { 278 if (type == icmp6_code[i].type && 279 !strcmp(w, icmp6_code[i].name)) 280 return (&icmp6_code[i]); 281 } 282 } 283 return (NULL); 284 } 285 286 void 287 print_op(u_int8_t op, const char *a1, const char *a2) 288 { 289 if (op == PF_OP_IRG) 290 printf(" %s >< %s", a1, a2); 291 else if (op == PF_OP_XRG) 292 printf(" %s <> %s", a1, a2); 293 else if (op == PF_OP_EQ) 294 printf(" = %s", a1); 295 else if (op == PF_OP_NE) 296 printf(" != %s", a1); 297 else if (op == PF_OP_LT) 298 printf(" < %s", a1); 299 else if (op == PF_OP_LE) 300 printf(" <= %s", a1); 301 else if (op == PF_OP_GT) 302 printf(" > %s", a1); 303 else if (op == PF_OP_GE) 304 printf(" >= %s", a1); 305 else if (op == PF_OP_RRG) 306 printf(" %s:%s", a1, a2); 307 } 308 309 void 310 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto) 311 { 312 char a1[6], a2[6]; 313 struct servent *s; 314 315 s = getservbyport(p1, proto); 316 p1 = ntohs(p1); 317 p2 = ntohs(p2); 318 snprintf(a1, sizeof(a1), "%u", p1); 319 snprintf(a2, sizeof(a2), "%u", p2); 320 printf(" port"); 321 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 322 print_op(op, s->s_name, a2); 323 else 324 print_op(op, a1, a2); 325 } 326 327 void 328 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 329 { 330 char a1[11], a2[11]; 331 332 snprintf(a1, sizeof(a1), "%u", u1); 333 snprintf(a2, sizeof(a2), "%u", u2); 334 printf(" %s", t); 335 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 336 print_op(op, "unknown", a2); 337 else 338 print_op(op, a1, a2); 339 } 340 341 void 342 print_flags(u_int8_t f) 343 { 344 int i; 345 346 for (i = 0; tcpflags[i]; ++i) 347 if (f & (1 << i)) 348 printf("%c", tcpflags[i]); 349 } 350 351 void 352 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 353 sa_family_t af, u_int8_t proto, int verbose) 354 { 355 char buf[PF_OSFP_LEN*3]; 356 if (src->addr.type == PF_ADDR_ADDRMASK && 357 dst->addr.type == PF_ADDR_ADDRMASK && 358 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 359 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 360 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 361 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 362 !src->neg && !dst->neg && 363 !src->port_op && !dst->port_op && 364 osfp == PF_OSFP_ANY) 365 printf(" all"); 366 else { 367 printf(" from "); 368 if (src->neg) 369 printf("! "); 370 print_addr(&src->addr, af, verbose); 371 if (src->port_op) 372 print_port(src->port_op, src->port[0], 373 src->port[1], 374 proto == IPPROTO_TCP ? "tcp" : "udp"); 375 if (osfp != PF_OSFP_ANY) 376 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 377 sizeof(buf))); 378 379 printf(" to "); 380 if (dst->neg) 381 printf("! "); 382 print_addr(&dst->addr, af, verbose); 383 if (dst->port_op) 384 print_port(dst->port_op, dst->port[0], 385 dst->port[1], 386 proto == IPPROTO_TCP ? "tcp" : "udp"); 387 } 388 } 389 390 void 391 print_pool(struct pf_pool *pool, u_int16_t p1, u_int16_t p2, 392 sa_family_t af, int id) 393 { 394 struct pf_pooladdr *pooladdr; 395 396 if ((TAILQ_FIRST(&pool->list) != NULL) && 397 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 398 printf("{ "); 399 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 400 switch (id) { 401 case PF_NAT: 402 case PF_RDR: 403 case PF_BINAT: 404 print_addr(&pooladdr->addr, af, 0); 405 break; 406 case PF_PASS: 407 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 408 printf("%s", pooladdr->ifname); 409 else { 410 printf("(%s ", pooladdr->ifname); 411 print_addr(&pooladdr->addr, af, 0); 412 printf(")"); 413 } 414 break; 415 default: 416 break; 417 } 418 if (TAILQ_NEXT(pooladdr, entries) != NULL) 419 printf(", "); 420 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 421 printf(" }"); 422 } 423 switch (id) { 424 case PF_NAT: 425 if ((p1 != PF_NAT_PROXY_PORT_LOW || 426 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 427 if (p1 == p2) 428 printf(" port %u", p1); 429 else 430 printf(" port %u:%u", p1, p2); 431 } 432 break; 433 case PF_RDR: 434 if (p1) { 435 printf(" port %u", p1); 436 if (p2 && (p2 != p1)) 437 printf(":%u", p2); 438 } 439 break; 440 default: 441 break; 442 } 443 switch (pool->opts & PF_POOL_TYPEMASK) { 444 case PF_POOL_NONE: 445 break; 446 case PF_POOL_BITMASK: 447 printf(" bitmask"); 448 break; 449 case PF_POOL_RANDOM: 450 printf(" random"); 451 break; 452 case PF_POOL_SRCHASH: 453 printf(" source-hash 0x%08x%08x%08x%08x", 454 pool->key.key32[0], pool->key.key32[1], 455 pool->key.key32[2], pool->key.key32[3]); 456 break; 457 case PF_POOL_ROUNDROBIN: 458 printf(" round-robin"); 459 break; 460 } 461 if (pool->opts & PF_POOL_STICKYADDR) 462 printf(" sticky-address"); 463 if (id == PF_NAT && p1 == 0 && p2 == 0) 464 printf(" static-port"); 465 } 466 467 const char *pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 468 const char *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 469 const char *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 470 const char *pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 471 472 void 473 print_status(struct pf_status *s, int opts) 474 { 475 char statline[80]; 476 const char *running; 477 time_t runtime; 478 int i; 479 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 480 static const char hex[] = "0123456789abcdef"; 481 482 runtime = time(NULL) - s->since; 483 running = s->running ? "Enabled" : "Disabled"; 484 485 if (s->since) { 486 unsigned int sec, min, hrs, day = runtime; 487 488 sec = day % 60; 489 day /= 60; 490 min = day % 60; 491 day /= 60; 492 hrs = day % 24; 493 day /= 24; 494 snprintf(statline, sizeof(statline), 495 "Status: %s for %u days %.2u:%.2u:%.2u", 496 running, day, hrs, min, sec); 497 } else 498 snprintf(statline, sizeof(statline), "Status: %s", running); 499 printf("%-44s", statline); 500 switch (s->debug) { 501 case PF_DEBUG_NONE: 502 printf("%15s\n\n", "Debug: None"); 503 break; 504 case PF_DEBUG_URGENT: 505 printf("%15s\n\n", "Debug: Urgent"); 506 break; 507 case PF_DEBUG_MISC: 508 printf("%15s\n\n", "Debug: Misc"); 509 break; 510 case PF_DEBUG_NOISY: 511 printf("%15s\n\n", "Debug: Loud"); 512 break; 513 } 514 515 if (opts & PF_OPT_VERBOSE) { 516 printf("Hostid: 0x%08x\n", ntohl(s->hostid)); 517 518 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 519 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 520 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 521 } 522 buf[i + i] = '\0'; 523 printf("Checksum: 0x%s\n\n", buf); 524 } 525 526 if (s->ifname[0] != 0) { 527 printf("Interface Stats for %-16s %5s %16s\n", 528 s->ifname, "IPv4", "IPv6"); 529 printf(" %-25s %14llu %16llu\n", "Bytes In", 530 (unsigned long long)s->bcounters[0][0], 531 (unsigned long long)s->bcounters[1][0]); 532 printf(" %-25s %14llu %16llu\n", "Bytes Out", 533 (unsigned long long)s->bcounters[0][1], 534 (unsigned long long)s->bcounters[1][1]); 535 printf(" Packets In\n"); 536 printf(" %-23s %14llu %16llu\n", "Passed", 537 (unsigned long long)s->pcounters[0][0][PF_PASS], 538 (unsigned long long)s->pcounters[1][0][PF_PASS]); 539 printf(" %-23s %14llu %16llu\n", "Blocked", 540 (unsigned long long)s->pcounters[0][0][PF_DROP], 541 (unsigned long long)s->pcounters[1][0][PF_DROP]); 542 printf(" Packets Out\n"); 543 printf(" %-23s %14llu %16llu\n", "Passed", 544 (unsigned long long)s->pcounters[0][1][PF_PASS], 545 (unsigned long long)s->pcounters[1][1][PF_PASS]); 546 printf(" %-23s %14llu %16llu\n\n", "Blocked", 547 (unsigned long long)s->pcounters[0][1][PF_DROP], 548 (unsigned long long)s->pcounters[1][1][PF_DROP]); 549 } 550 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 551 printf(" %-25s %14u %14s\n", "current entries", s->states, ""); 552 for (i = 0; i < FCNT_MAX; i++) { 553 printf(" %-25s %14llu ", pf_fcounters[i], 554 (unsigned long long)s->fcounters[i]); 555 if (runtime > 0) 556 printf("%14.1f/s\n", 557 (double)s->fcounters[i] / (double)runtime); 558 else 559 printf("%14s\n", ""); 560 } 561 if (opts & PF_OPT_VERBOSE) { 562 printf("Source Tracking Table\n"); 563 printf(" %-25s %14u %14s\n", "current entries", 564 s->src_nodes, ""); 565 for (i = 0; i < SCNT_MAX; i++) { 566 printf(" %-25s %14lld ", pf_scounters[i], 567 (unsigned long long)s->scounters[i]); 568 if (runtime > 0) 569 printf("%14.1f/s\n", 570 (double)s->scounters[i] / (double)runtime); 571 else 572 printf("%14s\n", ""); 573 } 574 } 575 printf("Counters\n"); 576 for (i = 0; i < PFRES_MAX; i++) { 577 printf(" %-25s %14llu ", pf_reasons[i], 578 (unsigned long long)s->counters[i]); 579 if (runtime > 0) 580 printf("%14.1f/s\n", 581 (double)s->counters[i] / (double)runtime); 582 else 583 printf("%14s\n", ""); 584 } 585 if (opts & PF_OPT_VERBOSE) { 586 printf("Limit Counters\n"); 587 for (i = 0; i < LCNT_MAX; i++) { 588 printf(" %-25s %14ju ", pf_lcounters[i], 589 (uintmax_t)s->lcounters[i]); 590 if (runtime > 0) 591 printf("%14.1f/s\n", 592 (double)s->lcounters[i] / (double)runtime); 593 else 594 printf("%14s\n", ""); 595 } 596 } 597 } 598 599 void 600 print_src_node(struct pf_src_node *sn, int opts) 601 { 602 struct pf_addr_wrap aw; 603 int min, sec; 604 605 memset(&aw, 0, sizeof(aw)); 606 if (sn->af == AF_INET) 607 aw.v.a.mask.addr32[0] = 0xffffffff; 608 else 609 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 610 611 aw.v.a.addr = sn->addr; 612 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 613 printf(" -> "); 614 aw.v.a.addr = sn->raddr; 615 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 616 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 617 sn->conn, sn->conn_rate.count / 1000, 618 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 619 if (opts & PF_OPT_VERBOSE) { 620 sec = sn->creation % 60; 621 sn->creation /= 60; 622 min = sn->creation % 60; 623 sn->creation /= 60; 624 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 625 if (sn->states == 0) { 626 sec = sn->expire % 60; 627 sn->expire /= 60; 628 min = sn->expire % 60; 629 sn->expire /= 60; 630 printf(", expires in %.2u:%.2u:%.2u", 631 sn->expire, min, sec); 632 } 633 printf(", %ju pkts, %ju bytes", 634 (uintmax_t)sn->packets[0] + sn->packets[1], 635 (uintmax_t)sn->bytes[0] + sn->bytes[1]); 636 switch (sn->ruletype) { 637 case PF_NAT: 638 if (sn->rule.nr != (uint32_t)(-1)) 639 printf(", nat rule %u", sn->rule.nr); 640 break; 641 case PF_RDR: 642 if (sn->rule.nr != (uint32_t)(-1)) 643 printf(", rdr rule %u", sn->rule.nr); 644 break; 645 case PF_PASS: 646 if (sn->rule.nr != (uint32_t)(-1)) 647 printf(", filter rule %u", sn->rule.nr); 648 break; 649 } 650 printf("\n"); 651 } 652 } 653 654 void 655 print_rule(struct pf_rule *r, const char *anchor_call, int verbose) 656 { 657 static const char *actiontypes[] = { "pass", "block", "scrub", 658 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" }; 659 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 660 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 661 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 662 int i, opts; 663 664 if (verbose) 665 printf("@%d ", r->nr); 666 if (r->action > PF_NORDR) 667 printf("action(%d)", r->action); 668 else if (anchor_call[0]) { 669 if (anchor_call[0] == '_') { 670 printf("%s", anchortypes[r->action]); 671 } else 672 printf("%s \"%s\"", anchortypes[r->action], 673 anchor_call); 674 } else { 675 printf("%s", actiontypes[r->action]); 676 if (r->natpass) 677 printf(" pass"); 678 } 679 if (r->action == PF_DROP) { 680 if (r->rule_flag & PFRULE_RETURN) 681 printf(" return"); 682 else if (r->rule_flag & PFRULE_RETURNRST) { 683 if (!r->return_ttl) 684 printf(" return-rst"); 685 else 686 printf(" return-rst(ttl %d)", r->return_ttl); 687 } else if (r->rule_flag & PFRULE_RETURNICMP) { 688 const struct icmpcodeent *ic, *ic6; 689 690 ic = geticmpcodebynumber(r->return_icmp >> 8, 691 r->return_icmp & 255, AF_INET); 692 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 693 r->return_icmp6 & 255, AF_INET6); 694 695 switch (r->af) { 696 case AF_INET: 697 printf(" return-icmp"); 698 if (ic == NULL) 699 printf("(%u)", r->return_icmp & 255); 700 else 701 printf("(%s)", ic->name); 702 break; 703 case AF_INET6: 704 printf(" return-icmp6"); 705 if (ic6 == NULL) 706 printf("(%u)", r->return_icmp6 & 255); 707 else 708 printf("(%s)", ic6->name); 709 break; 710 default: 711 printf(" return-icmp"); 712 if (ic == NULL) 713 printf("(%u, ", r->return_icmp & 255); 714 else 715 printf("(%s, ", ic->name); 716 if (ic6 == NULL) 717 printf("%u)", r->return_icmp6 & 255); 718 else 719 printf("%s)", ic6->name); 720 break; 721 } 722 } else 723 printf(" drop"); 724 } 725 if (r->direction == PF_IN) 726 printf(" in"); 727 else if (r->direction == PF_OUT) 728 printf(" out"); 729 if (r->log) { 730 printf(" log"); 731 if (r->log & ~PF_LOG || r->logif) { 732 int count = 0; 733 734 printf(" ("); 735 if (r->log & PF_LOG_ALL) 736 printf("%sall", count++ ? ", " : ""); 737 if (r->log & PF_LOG_SOCKET_LOOKUP) 738 printf("%suser", count++ ? ", " : ""); 739 if (r->logif) 740 printf("%sto pflog%u", count++ ? ", " : "", 741 r->logif); 742 printf(")"); 743 } 744 } 745 if (r->quick) 746 printf(" quick"); 747 if (r->ifname[0]) { 748 if (r->ifnot) 749 printf(" on ! %s", r->ifname); 750 else 751 printf(" on %s", r->ifname); 752 } 753 if (r->rt) { 754 if (r->rt == PF_ROUTETO) 755 printf(" route-to"); 756 else if (r->rt == PF_REPLYTO) 757 printf(" reply-to"); 758 else if (r->rt == PF_DUPTO) 759 printf(" dup-to"); 760 else if (r->rt == PF_FASTROUTE) 761 printf(" fastroute"); 762 if (r->rt != PF_FASTROUTE) { 763 printf(" "); 764 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 765 } 766 } 767 if (r->af) { 768 if (r->af == AF_INET) 769 printf(" inet"); 770 else 771 printf(" inet6"); 772 } 773 if (r->proto) { 774 struct protoent *p; 775 776 if ((p = getprotobynumber(r->proto)) != NULL) 777 printf(" proto %s", p->p_name); 778 else 779 printf(" proto %u", r->proto); 780 } 781 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 782 verbose); 783 if (r->uid.op) 784 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 785 UID_MAX); 786 if (r->gid.op) 787 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 788 GID_MAX); 789 if (r->flags || r->flagset) { 790 printf(" flags "); 791 print_flags(r->flags); 792 printf("/"); 793 print_flags(r->flagset); 794 } else if (r->action == PF_PASS && 795 (!r->proto || r->proto == IPPROTO_TCP) && 796 !(r->rule_flag & PFRULE_FRAGMENT) && 797 !anchor_call[0] && r->keep_state) 798 printf(" flags any"); 799 if (r->type) { 800 const struct icmptypeent *it; 801 802 it = geticmptypebynumber(r->type-1, r->af); 803 if (r->af != AF_INET6) 804 printf(" icmp-type"); 805 else 806 printf(" icmp6-type"); 807 if (it != NULL) 808 printf(" %s", it->name); 809 else 810 printf(" %u", r->type-1); 811 if (r->code) { 812 const struct icmpcodeent *ic; 813 814 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 815 if (ic != NULL) 816 printf(" code %s", ic->name); 817 else 818 printf(" code %u", r->code-1); 819 } 820 } 821 if (r->tos) 822 printf(" tos 0x%2.2x", r->tos); 823 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 824 printf(" no state"); 825 else if (r->keep_state == PF_STATE_NORMAL) 826 printf(" keep state"); 827 else if (r->keep_state == PF_STATE_MODULATE) 828 printf(" modulate state"); 829 else if (r->keep_state == PF_STATE_SYNPROXY) 830 printf(" synproxy state"); 831 if (r->prob) { 832 char buf[20]; 833 834 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 835 for (i = strlen(buf)-1; i > 0; i--) { 836 if (buf[i] == '0') 837 buf[i] = '\0'; 838 else { 839 if (buf[i] == '.') 840 buf[i] = '\0'; 841 break; 842 } 843 } 844 printf(" probability %s%%", buf); 845 } 846 opts = 0; 847 if (r->max_states || r->max_src_nodes || r->max_src_states) 848 opts = 1; 849 if (r->pickup_mode) 850 opts = 1; 851 if (r->rule_flag & PFRULE_NOSYNC) 852 opts = 1; 853 if (r->rule_flag & PFRULE_SRCTRACK) 854 opts = 1; 855 if (r->rule_flag & PFRULE_IFBOUND) 856 opts = 1; 857 if (r->rule_flag & PFRULE_STATESLOPPY) 858 opts = 1; 859 for (i = 0; !opts && i < PFTM_MAX; ++i) 860 if (r->timeout[i]) 861 opts = 1; 862 if (opts) { 863 printf(" ("); 864 switch(r->pickup_mode) { 865 case PF_PICKUPS_UNSPECIFIED: 866 break; 867 case PF_PICKUPS_DISABLED: 868 printf("no-pickups"); 869 opts = 0; 870 break; 871 case PF_PICKUPS_HASHONLY: 872 printf("hash-only"); 873 opts = 0; 874 break; 875 case PF_PICKUPS_ENABLED: 876 printf("pickups"); 877 opts = 0; 878 break; 879 default: 880 printf("unknown-pickups-mode-%d", r->pickup_mode); 881 break; 882 } 883 if (r->max_states) { 884 if (!opts) 885 printf(", "); 886 printf("max %u", r->max_states); 887 opts = 0; 888 } 889 if (r->rule_flag & PFRULE_NOSYNC) { 890 if (!opts) 891 printf(", "); 892 printf("no-sync"); 893 opts = 0; 894 } 895 if (r->rule_flag & PFRULE_SRCTRACK) { 896 if (!opts) 897 printf(", "); 898 printf("source-track"); 899 if (r->rule_flag & PFRULE_RULESRCTRACK) 900 printf(" rule"); 901 else 902 printf(" global"); 903 opts = 0; 904 } 905 if (r->max_src_states) { 906 if (!opts) 907 printf(", "); 908 printf("max-src-states %u", r->max_src_states); 909 opts = 0; 910 } 911 if (r->max_src_conn) { 912 if (!opts) 913 printf(", "); 914 printf("max-src-conn %u", r->max_src_conn); 915 opts = 0; 916 } 917 if (r->max_src_conn_rate.limit) { 918 if (!opts) 919 printf(", "); 920 printf("max-src-conn-rate %u/%u", 921 r->max_src_conn_rate.limit, 922 r->max_src_conn_rate.seconds); 923 opts = 0; 924 } 925 if (r->max_src_nodes) { 926 if (!opts) 927 printf(", "); 928 printf("max-src-nodes %u", r->max_src_nodes); 929 opts = 0; 930 } 931 if (r->overload_tblname[0]) { 932 if (!opts) 933 printf(", "); 934 printf("overload <%s>", r->overload_tblname); 935 if (r->flush) 936 printf(" flush"); 937 if (r->flush & PF_FLUSH_GLOBAL) 938 printf(" global"); 939 } 940 if (r->rule_flag & PFRULE_IFBOUND) { 941 if (!opts) 942 printf(", "); 943 printf("if-bound"); 944 opts = 0; 945 } 946 if (r->rule_flag & PFRULE_STATESLOPPY) { 947 if (!opts) 948 printf(", "); 949 printf("sloppy"); 950 opts = 0; 951 } 952 for (i = 0; i < PFTM_MAX; ++i) 953 if (r->timeout[i]) { 954 int j; 955 956 if (!opts) 957 printf(", "); 958 opts = 0; 959 for (j = 0; pf_timeouts[j].name != NULL; 960 ++j) 961 if (pf_timeouts[j].timeout == i) 962 break; 963 printf("%s %u", pf_timeouts[j].name == NULL ? 964 "inv.timeout" : pf_timeouts[j].name, 965 r->timeout[i]); 966 } 967 printf(")"); 968 } 969 if (r->rule_flag & PFRULE_FRAGMENT) 970 printf(" fragment"); 971 if (r->rule_flag & PFRULE_NODF) 972 printf(" no-df"); 973 if (r->rule_flag & PFRULE_RANDOMID) 974 printf(" random-id"); 975 if (r->min_ttl) 976 printf(" min-ttl %d", r->min_ttl); 977 if (r->max_mss) 978 printf(" max-mss %d", r->max_mss); 979 if (r->rule_flag & PFRULE_SET_TOS) 980 printf(" set-tos 0x%2.2x", r->set_tos); 981 if (r->allow_opts) 982 printf(" allow-opts"); 983 if (r->action == PF_SCRUB) { 984 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 985 printf(" reassemble tcp"); 986 987 if (r->rule_flag & PFRULE_FRAGDROP) 988 printf(" fragment drop-ovl"); 989 else if (r->rule_flag & PFRULE_FRAGCROP) 990 printf(" fragment crop"); 991 else 992 printf(" fragment reassemble"); 993 } 994 if (r->label[0]) 995 printf(" label \"%s\"", r->label); 996 if (r->qname[0] && r->pqname[0]) 997 printf(" queue(%s, %s)", r->qname, r->pqname); 998 else if (r->qname[0]) 999 printf(" queue %s", r->qname); 1000 if (r->tagname[0]) 1001 printf(" tag %s", r->tagname); 1002 if (r->match_tagname[0]) { 1003 if (r->match_tag_not) 1004 printf(" !"); 1005 printf(" tagged %s", r->match_tagname); 1006 } 1007 if (r->rtableid != -1) 1008 printf(" rtable %u", r->rtableid); 1009 if (r->divert.port) { 1010 if (PF_AZERO(&r->divert.addr, r->af)) { 1011 printf(" divert-reply"); 1012 } else { 1013 /* XXX cut&paste from print_addr */ 1014 char buf[48]; 1015 1016 printf(" divert-to "); 1017 if (inet_ntop(r->af, &r->divert.addr, buf, 1018 sizeof(buf)) == NULL) 1019 printf("?"); 1020 else 1021 printf("%s", buf); 1022 printf(" port %u", ntohs(r->divert.port)); 1023 } 1024 } 1025 if (!anchor_call[0] && (r->action == PF_NAT || 1026 r->action == PF_BINAT || r->action == PF_RDR)) { 1027 printf(" -> "); 1028 print_pool(&r->rpool, r->rpool.proxy_port[0], 1029 r->rpool.proxy_port[1], r->af, r->action); 1030 } 1031 } 1032 1033 void 1034 print_tabledef(const char *name, int flags, int addrs, 1035 struct node_tinithead *nodes) 1036 { 1037 struct node_tinit *ti, *nti; 1038 struct node_host *h; 1039 1040 printf("table <%s>", name); 1041 if (flags & PFR_TFLAG_CONST) 1042 printf(" const"); 1043 if (flags & PFR_TFLAG_PERSIST) 1044 printf(" persist"); 1045 if (flags & PFR_TFLAG_COUNTERS) 1046 printf(" counters"); 1047 SIMPLEQ_FOREACH(ti, nodes, entries) { 1048 if (ti->file) { 1049 printf(" file \"%s\"", ti->file); 1050 continue; 1051 } 1052 printf(" {"); 1053 for (;;) { 1054 for (h = ti->host; h != NULL; h = h->next) { 1055 printf(h->not ? " !" : " "); 1056 print_addr(&h->addr, h->af, 0); 1057 } 1058 nti = SIMPLEQ_NEXT(ti, entries); 1059 if (nti != NULL && nti->file == NULL) 1060 ti = nti; /* merge lists */ 1061 else 1062 break; 1063 } 1064 printf(" }"); 1065 } 1066 if (addrs && SIMPLEQ_EMPTY(nodes)) 1067 printf(" { }"); 1068 printf("\n"); 1069 } 1070 1071 int 1072 parse_flags(const char *s) 1073 { 1074 const char *p, *q; 1075 u_int8_t f = 0; 1076 1077 for (p = s; *p; p++) { 1078 if ((q = strchr(tcpflags, *p)) == NULL) 1079 return -1; 1080 else 1081 f |= 1 << (q - tcpflags); 1082 } 1083 return (f ? f : PF_TH_ALL); 1084 } 1085 1086 void 1087 set_ipmask(struct node_host *h, u_int8_t b) 1088 { 1089 struct pf_addr *m, *n; 1090 int i, j = 0; 1091 1092 m = &h->addr.v.a.mask; 1093 memset(m, 0, sizeof(*m)); 1094 1095 while (b >= 32) { 1096 m->addr32[j++] = 0xffffffff; 1097 b -= 32; 1098 } 1099 for (i = 31; i > 31-b; --i) 1100 m->addr32[j] |= (1 << i); 1101 if (b) 1102 m->addr32[j] = htonl(m->addr32[j]); 1103 1104 /* Mask off bits of the address that will never be used. */ 1105 n = &h->addr.v.a.addr; 1106 if (h->addr.type == PF_ADDR_ADDRMASK) 1107 for (i = 0; i < 4; i++) 1108 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1109 } 1110 1111 int 1112 check_netmask(struct node_host *h, sa_family_t af) 1113 { 1114 struct node_host *n = NULL; 1115 struct pf_addr *m; 1116 1117 for (n = h; n != NULL; n = n->next) { 1118 if (h->addr.type == PF_ADDR_TABLE) 1119 continue; 1120 m = &h->addr.v.a.mask; 1121 /* fix up netmask for dynaddr */ 1122 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1123 unmask(m, AF_INET6) > 32) 1124 set_ipmask(n, 32); 1125 /* netmasks > 32 bit are invalid on v4 */ 1126 if (af == AF_INET && 1127 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1128 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1129 unmask(m, AF_INET6)); 1130 return (1); 1131 } 1132 } 1133 return (0); 1134 } 1135 1136 /* interface lookup routines */ 1137 1138 struct node_host *iftab; 1139 1140 void 1141 ifa_load(void) 1142 { 1143 struct ifaddrs *ifap, *ifa; 1144 struct node_host *n = NULL, *h = NULL; 1145 1146 if (getifaddrs(&ifap) < 0) 1147 err(1, "getifaddrs"); 1148 1149 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1150 if (!(ifa->ifa_addr->sa_family == AF_INET || 1151 ifa->ifa_addr->sa_family == AF_INET6 || 1152 ifa->ifa_addr->sa_family == AF_LINK)) 1153 continue; 1154 n = calloc(1, sizeof(struct node_host)); 1155 if (n == NULL) 1156 err(1, "address: calloc"); 1157 n->af = ifa->ifa_addr->sa_family; 1158 n->ifa_flags = ifa->ifa_flags; 1159 #ifdef __KAME__ 1160 if (n->af == AF_INET6 && 1161 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1162 ifa->ifa_addr)->sin6_addr) && 1163 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1164 0) { 1165 struct sockaddr_in6 *sin6; 1166 1167 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1168 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1169 sin6->sin6_addr.s6_addr[3]; 1170 sin6->sin6_addr.s6_addr[2] = 0; 1171 sin6->sin6_addr.s6_addr[3] = 0; 1172 } 1173 #endif 1174 n->ifindex = 0; 1175 if (n->af == AF_INET) { 1176 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1177 ifa->ifa_addr)->sin_addr.s_addr, 1178 sizeof(struct in_addr)); 1179 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1180 ifa->ifa_netmask)->sin_addr.s_addr, 1181 sizeof(struct in_addr)); 1182 if (ifa->ifa_broadaddr != NULL) 1183 memcpy(&n->bcast, &((struct sockaddr_in *) 1184 ifa->ifa_broadaddr)->sin_addr.s_addr, 1185 sizeof(struct in_addr)); 1186 if (ifa->ifa_dstaddr != NULL) 1187 memcpy(&n->peer, &((struct sockaddr_in *) 1188 ifa->ifa_dstaddr)->sin_addr.s_addr, 1189 sizeof(struct in_addr)); 1190 } else if (n->af == AF_INET6) { 1191 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1192 ifa->ifa_addr)->sin6_addr.s6_addr, 1193 sizeof(struct in6_addr)); 1194 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1195 ifa->ifa_netmask)->sin6_addr.s6_addr, 1196 sizeof(struct in6_addr)); 1197 if (ifa->ifa_broadaddr != NULL) 1198 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1199 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1200 sizeof(struct in6_addr)); 1201 if (ifa->ifa_dstaddr != NULL) 1202 memcpy(&n->peer, &((struct sockaddr_in6 *) 1203 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1204 sizeof(struct in6_addr)); 1205 n->ifindex = ((struct sockaddr_in6 *) 1206 ifa->ifa_addr)->sin6_scope_id; 1207 } 1208 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1209 err(1, "ifa_load: strdup"); 1210 n->next = NULL; 1211 n->tail = n; 1212 if (h == NULL) 1213 h = n; 1214 else { 1215 h->tail->next = n; 1216 h->tail = n; 1217 } 1218 } 1219 1220 iftab = h; 1221 freeifaddrs(ifap); 1222 } 1223 1224 struct node_host * 1225 ifa_exists(const char *ifa_name) 1226 { 1227 struct node_host *n; 1228 struct ifgroupreq ifgr; 1229 int s; 1230 1231 if (iftab == NULL) 1232 ifa_load(); 1233 1234 /* check wether this is a group */ 1235 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) 1236 err(1, "socket"); 1237 bzero(&ifgr, sizeof(ifgr)); 1238 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1239 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == 0) { 1240 /* fake a node_host */ 1241 if ((n = calloc(1, sizeof(*n))) == NULL) 1242 err(1, "calloc"); 1243 if ((n->ifname = strdup(ifa_name)) == NULL) 1244 err(1, "strdup"); 1245 close(s); 1246 return (n); 1247 } 1248 close(s); 1249 1250 for (n = iftab; n; n = n->next) { 1251 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1252 return (n); 1253 } 1254 1255 return (NULL); 1256 } 1257 1258 struct node_host * 1259 ifa_grouplookup(const char *ifa_name, int flags) 1260 { 1261 struct ifg_req *ifg; 1262 struct ifgroupreq ifgr; 1263 int s; 1264 size_t len; 1265 struct node_host *n, *h = NULL; 1266 1267 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) 1268 err(1, "socket"); 1269 bzero(&ifgr, sizeof(ifgr)); 1270 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1271 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) { 1272 close(s); 1273 return (NULL); 1274 } 1275 1276 len = ifgr.ifgr_len; 1277 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1278 err(1, "calloc"); 1279 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1280 err(1, "SIOCGIFGMEMB"); 1281 1282 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1283 ifg++) { 1284 len -= sizeof(struct ifg_req); 1285 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1286 continue; 1287 if (h == NULL) 1288 h = n; 1289 else { 1290 h->tail->next = n; 1291 h->tail = n->tail; 1292 } 1293 } 1294 free(ifgr.ifgr_groups); 1295 close(s); 1296 1297 return (h); 1298 } 1299 1300 struct node_host * 1301 ifa_lookup(const char *ifa_name, int flags) 1302 { 1303 struct node_host *p = NULL, *h = NULL, *n = NULL; 1304 int got4 = 0, got6 = 0; 1305 const char *last_if = NULL; 1306 1307 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1308 return (h); 1309 1310 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1311 ifa_name = NULL; 1312 1313 if (iftab == NULL) 1314 ifa_load(); 1315 1316 for (p = iftab; p; p = p->next) { 1317 if (ifa_skip_if(ifa_name, p)) 1318 continue; 1319 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1320 continue; 1321 if ((flags & PFI_AFLAG_BROADCAST) && 1322 !(p->ifa_flags & IFF_BROADCAST)) 1323 continue; 1324 if ((flags & PFI_AFLAG_PEER) && 1325 !(p->ifa_flags & IFF_POINTOPOINT)) 1326 continue; 1327 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1328 continue; 1329 if (last_if == NULL || strcmp(last_if, p->ifname)) 1330 got4 = got6 = 0; 1331 last_if = p->ifname; 1332 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1333 continue; 1334 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1335 continue; 1336 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1337 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1338 continue; 1339 if (p->af == AF_INET) 1340 got4 = 1; 1341 else 1342 got6 = 1; 1343 n = calloc(1, sizeof(struct node_host)); 1344 if (n == NULL) 1345 err(1, "address: calloc"); 1346 n->af = p->af; 1347 if (flags & PFI_AFLAG_BROADCAST) 1348 memcpy(&n->addr.v.a.addr, &p->bcast, 1349 sizeof(struct pf_addr)); 1350 else if (flags & PFI_AFLAG_PEER) 1351 memcpy(&n->addr.v.a.addr, &p->peer, 1352 sizeof(struct pf_addr)); 1353 else 1354 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1355 sizeof(struct pf_addr)); 1356 if (flags & PFI_AFLAG_NETWORK) 1357 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1358 else { 1359 if (n->af == AF_INET) { 1360 if (p->ifa_flags & IFF_LOOPBACK && 1361 p->ifa_flags & IFF_LINK1) 1362 memcpy(&n->addr.v.a.mask, 1363 &p->addr.v.a.mask, 1364 sizeof(struct pf_addr)); 1365 else 1366 set_ipmask(n, 32); 1367 } else 1368 set_ipmask(n, 128); 1369 } 1370 n->ifindex = p->ifindex; 1371 1372 n->next = NULL; 1373 n->tail = n; 1374 if (h == NULL) 1375 h = n; 1376 else { 1377 h->tail->next = n; 1378 h->tail = n; 1379 } 1380 } 1381 return (h); 1382 } 1383 1384 int 1385 ifa_skip_if(const char *filter, struct node_host *p) 1386 { 1387 int n; 1388 1389 if (p->af != AF_INET && p->af != AF_INET6) 1390 return (1); 1391 if (filter == NULL || !*filter) 1392 return (0); 1393 if (!strcmp(p->ifname, filter)) 1394 return (0); /* exact match */ 1395 n = strlen(filter); 1396 if (n < 1 || n >= IFNAMSIZ) 1397 return (1); /* sanity check */ 1398 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1399 return (1); /* only do exact match in that case */ 1400 if (strncmp(p->ifname, filter, n)) 1401 return (1); /* prefix doesn't match */ 1402 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1403 } 1404 1405 1406 struct node_host * 1407 host(const char *s) 1408 { 1409 struct node_host *h = NULL; 1410 int mask, v4mask, v6mask, cont = 1; 1411 char *p, *q, *ps; 1412 1413 if ((p = strrchr(s, '/')) != NULL) { 1414 mask = strtol(p+1, &q, 0); 1415 if (!q || *q || mask > 128 || q == (p+1)) { 1416 fprintf(stderr, "invalid netmask '%s'\n", p); 1417 return (NULL); 1418 } 1419 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1420 err(1, "host: malloc"); 1421 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1422 v4mask = v6mask = mask; 1423 } else { 1424 if ((ps = strdup(s)) == NULL) 1425 err(1, "host: strdup"); 1426 v4mask = 32; 1427 v6mask = 128; 1428 mask = -1; 1429 } 1430 1431 /* interface with this name exists? */ 1432 if (cont && (h = host_if(ps, mask)) != NULL) 1433 cont = 0; 1434 1435 /* IPv4 address? */ 1436 if (cont && (h = host_v4(s)) != NULL) 1437 cont = 0; 1438 1439 /* IPv6 address? */ 1440 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1441 cont = 0; 1442 1443 /* dns lookup */ 1444 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1445 cont = 0; 1446 free(ps); 1447 1448 if (h == NULL || cont == 1) { 1449 fprintf(stderr, "no IP address found for %s\n", s); 1450 return (NULL); 1451 } 1452 return (h); 1453 } 1454 1455 struct node_host * 1456 host_if(const char *s, int mask) 1457 { 1458 struct node_host *n, *h = NULL; 1459 char *p, *ps; 1460 int flags = 0; 1461 1462 if ((ps = strdup(s)) == NULL) 1463 err(1, "host_if: strdup"); 1464 while ((p = strrchr(ps, ':')) != NULL) { 1465 if (!strcmp(p+1, "network")) 1466 flags |= PFI_AFLAG_NETWORK; 1467 else if (!strcmp(p+1, "broadcast")) 1468 flags |= PFI_AFLAG_BROADCAST; 1469 else if (!strcmp(p+1, "peer")) 1470 flags |= PFI_AFLAG_PEER; 1471 else if (!strcmp(p+1, "0")) 1472 flags |= PFI_AFLAG_NOALIAS; 1473 else { 1474 free(ps); 1475 return (NULL); 1476 } 1477 *p = '\0'; 1478 } 1479 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1480 fprintf(stderr, "illegal combination of interface modifiers\n"); 1481 free(ps); 1482 return (NULL); 1483 } 1484 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1485 fprintf(stderr, "network or broadcast lookup, but " 1486 "extra netmask given\n"); 1487 free(ps); 1488 return (NULL); 1489 } 1490 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1491 /* interface with this name exists */ 1492 h = ifa_lookup(ps, flags); 1493 for (n = h; n != NULL && mask > -1; n = n->next) 1494 set_ipmask(n, mask); 1495 } 1496 1497 free(ps); 1498 return (h); 1499 } 1500 1501 static struct node_host * 1502 host_v4(const char *s) 1503 { 1504 struct node_host *h = NULL; 1505 struct in_addr ina; 1506 int bits = 32; 1507 1508 memset(&ina, 0, sizeof(struct in_addr)); 1509 if (strrchr(s, '/') != NULL) { 1510 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1511 return (NULL); 1512 } else { 1513 if (inet_pton(AF_INET, s, &ina) != 1) 1514 return (NULL); 1515 } 1516 1517 h = calloc(1, sizeof(struct node_host)); 1518 if (h == NULL) 1519 err(1, "address: calloc"); 1520 h->ifname = NULL; 1521 h->af = AF_INET; 1522 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1523 set_ipmask(h, bits); 1524 h->next = NULL; 1525 h->tail = h; 1526 1527 return (h); 1528 } 1529 1530 struct node_host * 1531 host_v6(const char *s, int mask) 1532 { 1533 struct addrinfo hints, *res; 1534 struct node_host *h = NULL; 1535 1536 memset(&hints, 0, sizeof(hints)); 1537 hints.ai_family = AF_INET6; 1538 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1539 hints.ai_flags = AI_NUMERICHOST; 1540 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1541 h = calloc(1, sizeof(struct node_host)); 1542 if (h == NULL) 1543 err(1, "address: calloc"); 1544 h->ifname = NULL; 1545 h->af = AF_INET6; 1546 memcpy(&h->addr.v.a.addr, 1547 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1548 sizeof(h->addr.v.a.addr)); 1549 h->ifindex = 1550 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1551 set_ipmask(h, mask); 1552 freeaddrinfo(res); 1553 h->next = NULL; 1554 h->tail = h; 1555 } 1556 1557 return (h); 1558 } 1559 1560 struct node_host * 1561 host_dns(const char *s, int v4mask, int v6mask) 1562 { 1563 struct addrinfo hints, *res0, *res; 1564 struct node_host *n, *h = NULL; 1565 int error, noalias = 0; 1566 int got4 = 0, got6 = 0; 1567 char *p, *ps; 1568 1569 if ((ps = strdup(s)) == NULL) 1570 err(1, "host_dns: strdup"); 1571 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1572 noalias = 1; 1573 *p = '\0'; 1574 } 1575 memset(&hints, 0, sizeof(hints)); 1576 hints.ai_family = PF_UNSPEC; 1577 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1578 error = getaddrinfo(ps, NULL, &hints, &res0); 1579 if (error) { 1580 free(ps); 1581 return (h); 1582 } 1583 1584 for (res = res0; res; res = res->ai_next) { 1585 if (res->ai_family != AF_INET && 1586 res->ai_family != AF_INET6) 1587 continue; 1588 if (noalias) { 1589 if (res->ai_family == AF_INET) { 1590 if (got4) 1591 continue; 1592 got4 = 1; 1593 } else { 1594 if (got6) 1595 continue; 1596 got6 = 1; 1597 } 1598 } 1599 n = calloc(1, sizeof(struct node_host)); 1600 if (n == NULL) 1601 err(1, "host_dns: calloc"); 1602 n->ifname = NULL; 1603 n->af = res->ai_family; 1604 if (res->ai_family == AF_INET) { 1605 memcpy(&n->addr.v.a.addr, 1606 &((struct sockaddr_in *) 1607 res->ai_addr)->sin_addr.s_addr, 1608 sizeof(struct in_addr)); 1609 set_ipmask(n, v4mask); 1610 } else { 1611 memcpy(&n->addr.v.a.addr, 1612 &((struct sockaddr_in6 *) 1613 res->ai_addr)->sin6_addr.s6_addr, 1614 sizeof(struct in6_addr)); 1615 n->ifindex = 1616 ((struct sockaddr_in6 *) 1617 res->ai_addr)->sin6_scope_id; 1618 set_ipmask(n, v6mask); 1619 } 1620 n->next = NULL; 1621 n->tail = n; 1622 if (h == NULL) 1623 h = n; 1624 else { 1625 h->tail->next = n; 1626 h->tail = n; 1627 } 1628 } 1629 freeaddrinfo(res0); 1630 free(ps); 1631 1632 return (h); 1633 } 1634 1635 /* 1636 * convert a hostname to a list of addresses and put them in the given buffer. 1637 * test: 1638 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1639 */ 1640 int 1641 append_addr(struct pfr_buffer *b, char *s, int test) 1642 { 1643 char *r; 1644 struct node_host *h, *n; 1645 int rv, not = 0; 1646 1647 for (r = s; *r == '!'; r++) 1648 not = !not; 1649 if ((n = host(r)) == NULL) { 1650 errno = 0; 1651 return (-1); 1652 } 1653 rv = append_addr_host(b, n, test, not); 1654 do { 1655 h = n; 1656 n = n->next; 1657 free(h); 1658 } while (n != NULL); 1659 return (rv); 1660 } 1661 1662 /* 1663 * same as previous function, but with a pre-parsed input and the ability 1664 * to "negate" the result. Does not free the node_host list. 1665 * not: 1666 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1667 */ 1668 int 1669 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1670 { 1671 int bits; 1672 struct pfr_addr addr; 1673 1674 do { 1675 bzero(&addr, sizeof(addr)); 1676 addr.pfra_not = n->not ^ not; 1677 addr.pfra_af = n->af; 1678 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1679 switch (n->af) { 1680 case AF_INET: 1681 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1682 bits = 32; 1683 break; 1684 case AF_INET6: 1685 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1686 sizeof(struct in6_addr)); 1687 bits = 128; 1688 break; 1689 default: 1690 errno = EINVAL; 1691 return (-1); 1692 } 1693 if ((test && (not || addr.pfra_net != bits)) || 1694 addr.pfra_net > bits) { 1695 errno = EINVAL; 1696 return (-1); 1697 } 1698 if (pfr_buf_add(b, &addr)) 1699 return (-1); 1700 } while ((n = n->next) != NULL); 1701 1702 return (0); 1703 } 1704 1705 int 1706 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1707 { 1708 struct pfioc_trans_e trans; 1709 1710 bzero(&trans, sizeof(trans)); 1711 trans.rs_num = rs_num; 1712 if (strlcpy(trans.anchor, anchor, 1713 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1714 errx(1, "pfctl_add_trans: strlcpy"); 1715 1716 return pfr_buf_add(buf, &trans); 1717 } 1718 1719 u_int32_t 1720 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1721 { 1722 const struct pfioc_trans_e *p; 1723 1724 PFRB_FOREACH(p, buf) 1725 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1726 return (p->ticket); 1727 errx(1, "pfctl_get_ticket: assertion failed"); 1728 } 1729 1730 int 1731 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1732 { 1733 struct pfioc_trans trans; 1734 1735 bzero(&trans, sizeof(trans)); 1736 trans.size = buf->pfrb_size - from; 1737 trans.esize = sizeof(struct pfioc_trans_e); 1738 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1739 return ioctl(dev, cmd, &trans); 1740 } 1741