1 /* $OpenBSD: pfctl_parser.c,v 1.243 2009/04/06 12:11:52 henning 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 <sys/proc.h> 39 #include <net/if.h> 40 #include <netinet/in.h> 41 #include <netinet/in_systm.h> 42 #include <netinet/ip.h> 43 #include <netinet/ip_icmp.h> 44 #include <netinet/icmp6.h> 45 #include <net/pfvar.h> 46 #include <arpa/inet.h> 47 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 #include <ctype.h> 52 #include <netdb.h> 53 #include <stdarg.h> 54 #include <errno.h> 55 #include <err.h> 56 #include <ifaddrs.h> 57 #include <unistd.h> 58 59 #include "pfctl_parser.h" 60 #include "pfctl.h" 61 62 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 struct node_host *host_v4(const char *, int); 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 < (sizeof (icmp_type) / sizeof(icmp_type[0])); 214 i++) { 215 if (type == icmp_type[i].type) 216 return (&icmp_type[i]); 217 } 218 } else { 219 for (i=0; i < (sizeof (icmp6_type) / 220 sizeof(icmp6_type[0])); i++) { 221 if (type == icmp6_type[i].type) 222 return (&icmp6_type[i]); 223 } 224 } 225 return (NULL); 226 } 227 228 const struct icmptypeent * 229 geticmptypebyname(char *w, sa_family_t af) 230 { 231 unsigned int i; 232 233 if (af != AF_INET6) { 234 for (i=0; i < (sizeof (icmp_type) / sizeof(icmp_type[0])); 235 i++) { 236 if (!strcmp(w, icmp_type[i].name)) 237 return (&icmp_type[i]); 238 } 239 } else { 240 for (i=0; i < (sizeof (icmp6_type) / 241 sizeof(icmp6_type[0])); i++) { 242 if (!strcmp(w, icmp6_type[i].name)) 243 return (&icmp6_type[i]); 244 } 245 } 246 return (NULL); 247 } 248 249 const struct icmpcodeent * 250 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 251 { 252 unsigned int i; 253 254 if (af != AF_INET6) { 255 for (i=0; i < (sizeof (icmp_code) / sizeof(icmp_code[0])); 256 i++) { 257 if (type == icmp_code[i].type && 258 code == icmp_code[i].code) 259 return (&icmp_code[i]); 260 } 261 } else { 262 for (i=0; i < (sizeof (icmp6_code) / 263 sizeof(icmp6_code[0])); i++) { 264 if (type == icmp6_code[i].type && 265 code == icmp6_code[i].code) 266 return (&icmp6_code[i]); 267 } 268 } 269 return (NULL); 270 } 271 272 const struct icmpcodeent * 273 geticmpcodebyname(u_long type, char *w, sa_family_t af) 274 { 275 unsigned int i; 276 277 if (af != AF_INET6) { 278 for (i=0; i < (sizeof (icmp_code) / sizeof(icmp_code[0])); 279 i++) { 280 if (type == icmp_code[i].type && 281 !strcmp(w, icmp_code[i].name)) 282 return (&icmp_code[i]); 283 } 284 } else { 285 for (i=0; i < (sizeof (icmp6_code) / 286 sizeof(icmp6_code[0])); i++) { 287 if (type == icmp6_code[i].type && 288 !strcmp(w, icmp6_code[i].name)) 289 return (&icmp6_code[i]); 290 } 291 } 292 return (NULL); 293 } 294 295 void 296 print_op(u_int8_t op, const char *a1, const char *a2) 297 { 298 if (op == PF_OP_IRG) 299 printf(" %s >< %s", a1, a2); 300 else if (op == PF_OP_XRG) 301 printf(" %s <> %s", a1, a2); 302 else if (op == PF_OP_EQ) 303 printf(" = %s", a1); 304 else if (op == PF_OP_NE) 305 printf(" != %s", a1); 306 else if (op == PF_OP_LT) 307 printf(" < %s", a1); 308 else if (op == PF_OP_LE) 309 printf(" <= %s", a1); 310 else if (op == PF_OP_GT) 311 printf(" > %s", a1); 312 else if (op == PF_OP_GE) 313 printf(" >= %s", a1); 314 else if (op == PF_OP_RRG) 315 printf(" %s:%s", a1, a2); 316 } 317 318 void 319 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto) 320 { 321 char a1[6], a2[6]; 322 struct servent *s; 323 324 s = getservbyport(p1, proto); 325 p1 = ntohs(p1); 326 p2 = ntohs(p2); 327 snprintf(a1, sizeof(a1), "%u", p1); 328 snprintf(a2, sizeof(a2), "%u", p2); 329 printf(" port"); 330 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 331 print_op(op, s->s_name, a2); 332 else 333 print_op(op, a1, a2); 334 } 335 336 void 337 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 338 { 339 char a1[11], a2[11]; 340 341 snprintf(a1, sizeof(a1), "%u", u1); 342 snprintf(a2, sizeof(a2), "%u", u2); 343 printf(" %s", t); 344 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 345 print_op(op, "unknown", a2); 346 else 347 print_op(op, a1, a2); 348 } 349 350 void 351 print_flags(u_int8_t f) 352 { 353 int i; 354 355 for (i = 0; tcpflags[i]; ++i) 356 if (f & (1 << i)) 357 printf("%c", tcpflags[i]); 358 } 359 360 void 361 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 362 sa_family_t af, u_int8_t proto, int verbose) 363 { 364 char buf[PF_OSFP_LEN*3]; 365 if (src->addr.type == PF_ADDR_ADDRMASK && 366 dst->addr.type == PF_ADDR_ADDRMASK && 367 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 368 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 369 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 370 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 371 !src->neg && !dst->neg && 372 !src->port_op && !dst->port_op && 373 osfp == PF_OSFP_ANY) 374 printf(" all"); 375 else { 376 printf(" from "); 377 if (src->neg) 378 printf("! "); 379 print_addr(&src->addr, af, verbose); 380 if (src->port_op) 381 print_port(src->port_op, src->port[0], 382 src->port[1], 383 proto == IPPROTO_TCP ? "tcp" : "udp"); 384 if (osfp != PF_OSFP_ANY) 385 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 386 sizeof(buf))); 387 388 printf(" to "); 389 if (dst->neg) 390 printf("! "); 391 print_addr(&dst->addr, af, verbose); 392 if (dst->port_op) 393 print_port(dst->port_op, dst->port[0], 394 dst->port[1], 395 proto == IPPROTO_TCP ? "tcp" : "udp"); 396 } 397 } 398 399 void 400 print_pool(struct pf_pool *pool, u_int16_t p1, u_int16_t p2, 401 sa_family_t af, int id) 402 { 403 struct pf_pooladdr *pooladdr; 404 405 if ((TAILQ_FIRST(&pool->list) != NULL) && 406 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 407 printf("{ "); 408 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 409 switch (id) { 410 case PF_NAT: 411 case PF_RDR: 412 case PF_BINAT: 413 print_addr(&pooladdr->addr, af, 0); 414 break; 415 case PF_PASS: 416 case PF_MATCH: 417 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 418 printf("%s", pooladdr->ifname); 419 else { 420 printf("(%s ", pooladdr->ifname); 421 print_addr(&pooladdr->addr, af, 0); 422 printf(")"); 423 } 424 break; 425 default: 426 break; 427 } 428 if (TAILQ_NEXT(pooladdr, entries) != NULL) 429 printf(", "); 430 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 431 printf(" }"); 432 } 433 switch (id) { 434 case PF_NAT: 435 if ((p1 != PF_NAT_PROXY_PORT_LOW || 436 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 437 if (p1 == p2) 438 printf(" port %u", p1); 439 else 440 printf(" port %u:%u", p1, p2); 441 } 442 break; 443 case PF_RDR: 444 if (p1) { 445 printf(" port %u", p1); 446 if (p2 && (p2 != p1)) 447 printf(":%u", p2); 448 } 449 break; 450 default: 451 break; 452 } 453 switch (pool->opts & PF_POOL_TYPEMASK) { 454 case PF_POOL_NONE: 455 break; 456 case PF_POOL_BITMASK: 457 printf(" bitmask"); 458 break; 459 case PF_POOL_RANDOM: 460 printf(" random"); 461 break; 462 case PF_POOL_SRCHASH: 463 printf(" source-hash 0x%08x%08x%08x%08x", 464 pool->key.key32[0], pool->key.key32[1], 465 pool->key.key32[2], pool->key.key32[3]); 466 break; 467 case PF_POOL_ROUNDROBIN: 468 printf(" round-robin"); 469 break; 470 } 471 if (pool->opts & PF_POOL_STICKYADDR) 472 printf(" sticky-address"); 473 if (id == PF_NAT && p1 == 0 && p2 == 0) 474 printf(" static-port"); 475 } 476 477 const char *pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 478 const char *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 479 const char *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 480 const char *pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 481 482 void 483 print_status(struct pf_status *s, int opts) 484 { 485 char statline[80], *running; 486 time_t runtime; 487 int i; 488 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 489 static const char hex[] = "0123456789abcdef"; 490 491 runtime = time(NULL) - s->since; 492 running = s->running ? "Enabled" : "Disabled"; 493 494 if (s->since) { 495 unsigned int sec, min, hrs, day = runtime; 496 497 sec = day % 60; 498 day /= 60; 499 min = day % 60; 500 day /= 60; 501 hrs = day % 24; 502 day /= 24; 503 snprintf(statline, sizeof(statline), 504 "Status: %s for %u days %.2u:%.2u:%.2u", 505 running, day, hrs, min, sec); 506 } else 507 snprintf(statline, sizeof(statline), "Status: %s", running); 508 printf("%-44s", statline); 509 switch (s->debug) { 510 case PF_DEBUG_NONE: 511 printf("%15s\n\n", "Debug: None"); 512 break; 513 case PF_DEBUG_URGENT: 514 printf("%15s\n\n", "Debug: Urgent"); 515 break; 516 case PF_DEBUG_MISC: 517 printf("%15s\n\n", "Debug: Misc"); 518 break; 519 case PF_DEBUG_NOISY: 520 printf("%15s\n\n", "Debug: Loud"); 521 break; 522 } 523 524 if (opts & PF_OPT_VERBOSE) { 525 printf("Hostid: 0x%08x\n", ntohl(s->hostid)); 526 527 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 528 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 529 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 530 } 531 buf[i + i] = '\0'; 532 printf("Checksum: 0x%s\n\n", buf); 533 } 534 535 if (s->ifname[0] != 0) { 536 printf("Interface Stats for %-16s %5s %16s\n", 537 s->ifname, "IPv4", "IPv6"); 538 printf(" %-25s %14llu %16llu\n", "Bytes In", 539 (unsigned long long)s->bcounters[0][0], 540 (unsigned long long)s->bcounters[1][0]); 541 printf(" %-25s %14llu %16llu\n", "Bytes Out", 542 (unsigned long long)s->bcounters[0][1], 543 (unsigned long long)s->bcounters[1][1]); 544 printf(" Packets In\n"); 545 printf(" %-23s %14llu %16llu\n", "Passed", 546 (unsigned long long)s->pcounters[0][0][PF_PASS], 547 (unsigned long long)s->pcounters[1][0][PF_PASS]); 548 printf(" %-23s %14llu %16llu\n", "Blocked", 549 (unsigned long long)s->pcounters[0][0][PF_DROP], 550 (unsigned long long)s->pcounters[1][0][PF_DROP]); 551 printf(" Packets Out\n"); 552 printf(" %-23s %14llu %16llu\n", "Passed", 553 (unsigned long long)s->pcounters[0][1][PF_PASS], 554 (unsigned long long)s->pcounters[1][1][PF_PASS]); 555 printf(" %-23s %14llu %16llu\n\n", "Blocked", 556 (unsigned long long)s->pcounters[0][1][PF_DROP], 557 (unsigned long long)s->pcounters[1][1][PF_DROP]); 558 } 559 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 560 printf(" %-25s %14u %14s\n", "current entries", s->states, ""); 561 for (i = 0; i < FCNT_MAX; i++) { 562 printf(" %-25s %14llu ", pf_fcounters[i], 563 (unsigned long long)s->fcounters[i]); 564 if (runtime > 0) 565 printf("%14.1f/s\n", 566 (double)s->fcounters[i] / (double)runtime); 567 else 568 printf("%14s\n", ""); 569 } 570 if (opts & PF_OPT_VERBOSE) { 571 printf("Source Tracking Table\n"); 572 printf(" %-25s %14u %14s\n", "current entries", 573 s->src_nodes, ""); 574 for (i = 0; i < SCNT_MAX; i++) { 575 printf(" %-25s %14lld ", pf_scounters[i], 576 s->scounters[i]); 577 if (runtime > 0) 578 printf("%14.1f/s\n", 579 (double)s->scounters[i] / (double)runtime); 580 else 581 printf("%14s\n", ""); 582 } 583 } 584 printf("Counters\n"); 585 for (i = 0; i < PFRES_MAX; i++) { 586 printf(" %-25s %14llu ", pf_reasons[i], 587 (unsigned long long)s->counters[i]); 588 if (runtime > 0) 589 printf("%14.1f/s\n", 590 (double)s->counters[i] / (double)runtime); 591 else 592 printf("%14s\n", ""); 593 } 594 if (opts & PF_OPT_VERBOSE) { 595 printf("Limit Counters\n"); 596 for (i = 0; i < LCNT_MAX; i++) { 597 printf(" %-25s %14lld ", pf_lcounters[i], 598 s->lcounters[i]); 599 if (runtime > 0) 600 printf("%14.1f/s\n", 601 (double)s->lcounters[i] / (double)runtime); 602 else 603 printf("%14s\n", ""); 604 } 605 } 606 } 607 608 void 609 print_src_node(struct pf_src_node *sn, int opts) 610 { 611 struct pf_addr_wrap aw; 612 int min, sec; 613 614 memset(&aw, 0, sizeof(aw)); 615 if (sn->af == AF_INET) 616 aw.v.a.mask.addr32[0] = 0xffffffff; 617 else 618 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 619 620 aw.v.a.addr = sn->addr; 621 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 622 printf(" -> "); 623 aw.v.a.addr = sn->raddr; 624 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 625 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 626 sn->conn, sn->conn_rate.count / 1000, 627 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 628 if (opts & PF_OPT_VERBOSE) { 629 sec = sn->creation % 60; 630 sn->creation /= 60; 631 min = sn->creation % 60; 632 sn->creation /= 60; 633 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 634 if (sn->states == 0) { 635 sec = sn->expire % 60; 636 sn->expire /= 60; 637 min = sn->expire % 60; 638 sn->expire /= 60; 639 printf(", expires in %.2u:%.2u:%.2u", 640 sn->expire, min, sec); 641 } 642 printf(", %llu pkts, %llu bytes", 643 sn->packets[0] + sn->packets[1], 644 sn->bytes[0] + sn->bytes[1]); 645 switch (sn->ruletype) { 646 case PF_NAT: 647 if (sn->rule.nr != -1) 648 printf(", nat rule %u", sn->rule.nr); 649 break; 650 case PF_RDR: 651 if (sn->rule.nr != -1) 652 printf(", rdr rule %u", sn->rule.nr); 653 break; 654 case PF_PASS: 655 case PF_MATCH: 656 if (sn->rule.nr != -1) 657 printf(", filter rule %u", sn->rule.nr); 658 break; 659 } 660 printf("\n"); 661 } 662 } 663 664 void 665 print_rule(struct pf_rule *r, const char *anchor_call, int verbose) 666 { 667 static const char *actiontypes[] = { "pass", "block", "scrub", 668 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr", 669 "", "", "match"}; 670 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 671 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 672 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 673 int i, opts; 674 675 if (verbose) 676 printf("@%d ", r->nr); 677 if (r->action > PF_MATCH) 678 printf("action(%d)", r->action); 679 else if (anchor_call[0]) { 680 if (anchor_call[0] == '_') { 681 printf("%s", anchortypes[r->action]); 682 } else 683 printf("%s \"%s\"", anchortypes[r->action], 684 anchor_call); 685 } else { 686 printf("%s", actiontypes[r->action]); 687 if (r->natpass) 688 printf(" pass"); 689 } 690 if (r->action == PF_DROP) { 691 if (r->rule_flag & PFRULE_RETURN) 692 printf(" return"); 693 else if (r->rule_flag & PFRULE_RETURNRST) { 694 if (!r->return_ttl) 695 printf(" return-rst"); 696 else 697 printf(" return-rst(ttl %d)", r->return_ttl); 698 } else if (r->rule_flag & PFRULE_RETURNICMP) { 699 const struct icmpcodeent *ic, *ic6; 700 701 ic = geticmpcodebynumber(r->return_icmp >> 8, 702 r->return_icmp & 255, AF_INET); 703 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 704 r->return_icmp6 & 255, AF_INET6); 705 706 switch (r->af) { 707 case AF_INET: 708 printf(" return-icmp"); 709 if (ic == NULL) 710 printf("(%u)", r->return_icmp & 255); 711 else 712 printf("(%s)", ic->name); 713 break; 714 case AF_INET6: 715 printf(" return-icmp6"); 716 if (ic6 == NULL) 717 printf("(%u)", r->return_icmp6 & 255); 718 else 719 printf("(%s)", ic6->name); 720 break; 721 default: 722 printf(" return-icmp"); 723 if (ic == NULL) 724 printf("(%u, ", r->return_icmp & 255); 725 else 726 printf("(%s, ", ic->name); 727 if (ic6 == NULL) 728 printf("%u)", r->return_icmp6 & 255); 729 else 730 printf("%s)", ic6->name); 731 break; 732 } 733 } else 734 printf(" drop"); 735 } 736 if (r->direction == PF_IN) 737 printf(" in"); 738 else if (r->direction == PF_OUT) 739 printf(" out"); 740 if (r->log) { 741 printf(" log"); 742 if (r->log & ~PF_LOG || r->logif) { 743 int count = 0; 744 745 printf(" ("); 746 if (r->log & PF_LOG_ALL) 747 printf("%sall", count++ ? ", " : ""); 748 if (r->log & PF_LOG_SOCKET_LOOKUP) 749 printf("%suser", count++ ? ", " : ""); 750 if (r->logif) 751 printf("%sto pflog%u", count++ ? ", " : "", 752 r->logif); 753 printf(")"); 754 } 755 } 756 if (r->quick) 757 printf(" quick"); 758 if (r->ifname[0]) { 759 if (r->ifnot) 760 printf(" on ! %s", r->ifname); 761 else 762 printf(" on %s", r->ifname); 763 } 764 if (r->rt) { 765 if (r->rt == PF_ROUTETO) 766 printf(" route-to"); 767 else if (r->rt == PF_REPLYTO) 768 printf(" reply-to"); 769 else if (r->rt == PF_DUPTO) 770 printf(" dup-to"); 771 else if (r->rt == PF_FASTROUTE) 772 printf(" fastroute"); 773 if (r->rt != PF_FASTROUTE) { 774 printf(" "); 775 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 776 } 777 } 778 if (r->af) { 779 if (r->af == AF_INET) 780 printf(" inet"); 781 else 782 printf(" inet6"); 783 } 784 if (r->proto) { 785 struct protoent *p; 786 787 if ((p = getprotobynumber(r->proto)) != NULL) 788 printf(" proto %s", p->p_name); 789 else 790 printf(" proto %u", r->proto); 791 } 792 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 793 verbose); 794 if (r->uid.op) 795 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 796 UID_MAX); 797 if (r->gid.op) 798 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 799 GID_MAX); 800 if (r->flags || r->flagset) { 801 printf(" flags "); 802 print_flags(r->flags); 803 printf("/"); 804 print_flags(r->flagset); 805 } else if ((r->action == PF_PASS || r->action == PF_MATCH) && 806 (!r->proto || r->proto == IPPROTO_TCP) && 807 !(r->rule_flag & PFRULE_FRAGMENT) && 808 !anchor_call[0] && r->keep_state) 809 printf(" flags any"); 810 if (r->type) { 811 const struct icmptypeent *it; 812 813 it = geticmptypebynumber(r->type-1, r->af); 814 if (r->af != AF_INET6) 815 printf(" icmp-type"); 816 else 817 printf(" icmp6-type"); 818 if (it != NULL) 819 printf(" %s", it->name); 820 else 821 printf(" %u", r->type-1); 822 if (r->code) { 823 const struct icmpcodeent *ic; 824 825 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 826 if (ic != NULL) 827 printf(" code %s", ic->name); 828 else 829 printf(" code %u", r->code-1); 830 } 831 } 832 if (r->tos) 833 printf(" tos 0x%2.2x", r->tos); 834 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 835 printf(" no state"); 836 else if (r->keep_state == PF_STATE_NORMAL) 837 printf(" keep state"); 838 else if (r->keep_state == PF_STATE_MODULATE) 839 printf(" modulate state"); 840 else if (r->keep_state == PF_STATE_SYNPROXY) 841 printf(" synproxy state"); 842 if (r->prob) { 843 char buf[20]; 844 845 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 846 for (i = strlen(buf)-1; i > 0; i--) { 847 if (buf[i] == '0') 848 buf[i] = '\0'; 849 else { 850 if (buf[i] == '.') 851 buf[i] = '\0'; 852 break; 853 } 854 } 855 printf(" probability %s%%", buf); 856 } 857 opts = 0; 858 if (r->max_states || r->max_src_nodes || r->max_src_states) 859 opts = 1; 860 if (r->rule_flag & PFRULE_NOSYNC) 861 opts = 1; 862 if (r->rule_flag & PFRULE_SRCTRACK) 863 opts = 1; 864 if (r->rule_flag & PFRULE_IFBOUND) 865 opts = 1; 866 if (r->rule_flag & PFRULE_STATESLOPPY) 867 opts = 1; 868 for (i = 0; !opts && i < PFTM_MAX; ++i) 869 if (r->timeout[i]) 870 opts = 1; 871 if (opts) { 872 printf(" ("); 873 if (r->max_states) { 874 printf("max %u", r->max_states); 875 opts = 0; 876 } 877 if (r->rule_flag & PFRULE_NOSYNC) { 878 if (!opts) 879 printf(", "); 880 printf("no-sync"); 881 opts = 0; 882 } 883 if (r->rule_flag & PFRULE_SRCTRACK) { 884 if (!opts) 885 printf(", "); 886 printf("source-track"); 887 if (r->rule_flag & PFRULE_RULESRCTRACK) 888 printf(" rule"); 889 else 890 printf(" global"); 891 opts = 0; 892 } 893 if (r->max_src_states) { 894 if (!opts) 895 printf(", "); 896 printf("max-src-states %u", r->max_src_states); 897 opts = 0; 898 } 899 if (r->max_src_conn) { 900 if (!opts) 901 printf(", "); 902 printf("max-src-conn %u", r->max_src_conn); 903 opts = 0; 904 } 905 if (r->max_src_conn_rate.limit) { 906 if (!opts) 907 printf(", "); 908 printf("max-src-conn-rate %u/%u", 909 r->max_src_conn_rate.limit, 910 r->max_src_conn_rate.seconds); 911 opts = 0; 912 } 913 if (r->max_src_nodes) { 914 if (!opts) 915 printf(", "); 916 printf("max-src-nodes %u", r->max_src_nodes); 917 opts = 0; 918 } 919 if (r->overload_tblname[0]) { 920 if (!opts) 921 printf(", "); 922 printf("overload <%s>", r->overload_tblname); 923 if (r->flush) 924 printf(" flush"); 925 if (r->flush & PF_FLUSH_GLOBAL) 926 printf(" global"); 927 } 928 if (r->rule_flag & PFRULE_IFBOUND) { 929 if (!opts) 930 printf(", "); 931 printf("if-bound"); 932 opts = 0; 933 } 934 if (r->rule_flag & PFRULE_STATESLOPPY) { 935 if (!opts) 936 printf(", "); 937 printf("sloppy"); 938 opts = 0; 939 } 940 if (r->rule_flag & PFRULE_PFLOW) { 941 if (!opts) 942 printf(", "); 943 printf("pflow"); 944 opts = 0; 945 } 946 for (i = 0; i < PFTM_MAX; ++i) 947 if (r->timeout[i]) { 948 int j; 949 950 if (!opts) 951 printf(", "); 952 opts = 0; 953 for (j = 0; pf_timeouts[j].name != NULL; 954 ++j) 955 if (pf_timeouts[j].timeout == i) 956 break; 957 printf("%s %u", pf_timeouts[j].name == NULL ? 958 "inv.timeout" : pf_timeouts[j].name, 959 r->timeout[i]); 960 } 961 printf(")"); 962 } 963 964 if (r->scrub_flags >= PFSTATE_NODF || r->min_ttl || r->max_mss) { 965 printf(" scrub ("); 966 opts = 1; 967 if (r->scrub_flags & PFSTATE_NODF) { 968 printf("no-df"); 969 opts = 0; 970 } 971 if (r->scrub_flags & PFSTATE_RANDOMID) { 972 if (!opts) 973 printf(" "); 974 printf("random-id"); 975 opts = 0; 976 } 977 if (r->min_ttl) { 978 if (!opts) 979 printf(" "); 980 printf("min-ttl %d", r->min_ttl); 981 opts = 0; 982 } 983 if (r->scrub_flags & PFSTATE_SETTOS) { 984 if (!opts) 985 printf(" "); 986 printf("set-tos 0x%2.2x", r->set_tos); 987 opts = 0; 988 } 989 if (r->scrub_flags & PFSTATE_SCRUB_TCP) { 990 if (!opts) 991 printf(" "); 992 printf("reassemble tcp"); 993 opts = 0; 994 } 995 if (r->max_mss) { 996 if (!opts) 997 printf(" "); 998 printf("max-mss %d", r->max_mss); 999 opts = 0; 1000 } 1001 printf(")"); 1002 } 1003 1004 if (r->allow_opts) 1005 printf(" allow-opts"); 1006 if (r->label[0]) 1007 printf(" label \"%s\"", r->label); 1008 if (r->qname[0] && r->pqname[0]) 1009 printf(" queue(%s, %s)", r->qname, r->pqname); 1010 else if (r->qname[0]) 1011 printf(" queue %s", r->qname); 1012 if (r->tagname[0]) 1013 printf(" tag %s", r->tagname); 1014 if (r->match_tagname[0]) { 1015 if (r->match_tag_not) 1016 printf(" !"); 1017 printf(" tagged %s", r->match_tagname); 1018 } 1019 if (r->rtableid != -1) 1020 printf(" rtable %u", r->rtableid); 1021 if (r->divert.port) { 1022 if (PF_AZERO(&r->divert.addr, r->af)) { 1023 printf(" divert-reply"); 1024 } else { 1025 /* XXX cut&paste from print_addr */ 1026 char buf[48]; 1027 1028 printf(" divert-to "); 1029 if (inet_ntop(r->af, &r->divert.addr, buf, 1030 sizeof(buf)) == NULL) 1031 printf("?"); 1032 else 1033 printf("%s", buf); 1034 printf(" port %u", ntohs(r->divert.port)); 1035 } 1036 } 1037 if (!anchor_call[0] && (r->action == PF_NAT || 1038 r->action == PF_BINAT || r->action == PF_RDR)) { 1039 printf(" -> "); 1040 print_pool(&r->rpool, r->rpool.proxy_port[0], 1041 r->rpool.proxy_port[1], r->af, r->action); 1042 } 1043 } 1044 1045 void 1046 print_tabledef(const char *name, int flags, int addrs, 1047 struct node_tinithead *nodes) 1048 { 1049 struct node_tinit *ti, *nti; 1050 struct node_host *h; 1051 1052 printf("table <%s>", name); 1053 if (flags & PFR_TFLAG_CONST) 1054 printf(" const"); 1055 if (flags & PFR_TFLAG_PERSIST) 1056 printf(" persist"); 1057 if (flags & PFR_TFLAG_COUNTERS) 1058 printf(" counters"); 1059 SIMPLEQ_FOREACH(ti, nodes, entries) { 1060 if (ti->file) { 1061 printf(" file \"%s\"", ti->file); 1062 continue; 1063 } 1064 printf(" {"); 1065 for (;;) { 1066 for (h = ti->host; h != NULL; h = h->next) { 1067 printf(h->not ? " !" : " "); 1068 print_addr(&h->addr, h->af, 0); 1069 } 1070 nti = SIMPLEQ_NEXT(ti, entries); 1071 if (nti != NULL && nti->file == NULL) 1072 ti = nti; /* merge lists */ 1073 else 1074 break; 1075 } 1076 printf(" }"); 1077 } 1078 if (addrs && SIMPLEQ_EMPTY(nodes)) 1079 printf(" { }"); 1080 printf("\n"); 1081 } 1082 1083 int 1084 parse_flags(char *s) 1085 { 1086 char *p, *q; 1087 u_int8_t f = 0; 1088 1089 for (p = s; *p; p++) { 1090 if ((q = strchr(tcpflags, *p)) == NULL) 1091 return -1; 1092 else 1093 f |= 1 << (q - tcpflags); 1094 } 1095 return (f ? f : PF_TH_ALL); 1096 } 1097 1098 void 1099 set_ipmask(struct node_host *h, u_int8_t b) 1100 { 1101 struct pf_addr *m, *n; 1102 int i, j = 0; 1103 1104 m = &h->addr.v.a.mask; 1105 memset(m, 0, sizeof(*m)); 1106 1107 while (b >= 32) { 1108 m->addr32[j++] = 0xffffffff; 1109 b -= 32; 1110 } 1111 for (i = 31; i > 31-b; --i) 1112 m->addr32[j] |= (1 << i); 1113 if (b) 1114 m->addr32[j] = htonl(m->addr32[j]); 1115 1116 /* Mask off bits of the address that will never be used. */ 1117 n = &h->addr.v.a.addr; 1118 if (h->addr.type == PF_ADDR_ADDRMASK) 1119 for (i = 0; i < 4; i++) 1120 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1121 } 1122 1123 int 1124 check_netmask(struct node_host *h, sa_family_t af) 1125 { 1126 struct node_host *n = NULL; 1127 struct pf_addr *m; 1128 1129 for (n = h; n != NULL; n = n->next) { 1130 if (h->addr.type == PF_ADDR_TABLE) 1131 continue; 1132 m = &h->addr.v.a.mask; 1133 /* fix up netmask for dynaddr */ 1134 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1135 unmask(m, AF_INET6) > 32) 1136 set_ipmask(n, 32); 1137 /* netmasks > 32 bit are invalid on v4 */ 1138 if (af == AF_INET && 1139 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1140 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1141 unmask(m, AF_INET6)); 1142 return (1); 1143 } 1144 } 1145 return (0); 1146 } 1147 1148 /* interface lookup routines */ 1149 1150 struct node_host *iftab; 1151 1152 void 1153 ifa_load(void) 1154 { 1155 struct ifaddrs *ifap, *ifa; 1156 struct node_host *n = NULL, *h = NULL; 1157 1158 if (getifaddrs(&ifap) < 0) 1159 err(1, "getifaddrs"); 1160 1161 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1162 if (!(ifa->ifa_addr->sa_family == AF_INET || 1163 ifa->ifa_addr->sa_family == AF_INET6 || 1164 ifa->ifa_addr->sa_family == AF_LINK)) 1165 continue; 1166 n = calloc(1, sizeof(struct node_host)); 1167 if (n == NULL) 1168 err(1, "address: calloc"); 1169 n->af = ifa->ifa_addr->sa_family; 1170 n->ifa_flags = ifa->ifa_flags; 1171 #ifdef __KAME__ 1172 if (n->af == AF_INET6 && 1173 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1174 ifa->ifa_addr)->sin6_addr) && 1175 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1176 0) { 1177 struct sockaddr_in6 *sin6; 1178 1179 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1180 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1181 sin6->sin6_addr.s6_addr[3]; 1182 sin6->sin6_addr.s6_addr[2] = 0; 1183 sin6->sin6_addr.s6_addr[3] = 0; 1184 } 1185 #endif 1186 n->ifindex = 0; 1187 if (n->af == AF_INET) { 1188 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1189 ifa->ifa_addr)->sin_addr.s_addr, 1190 sizeof(struct in_addr)); 1191 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1192 ifa->ifa_netmask)->sin_addr.s_addr, 1193 sizeof(struct in_addr)); 1194 if (ifa->ifa_broadaddr != NULL) 1195 memcpy(&n->bcast, &((struct sockaddr_in *) 1196 ifa->ifa_broadaddr)->sin_addr.s_addr, 1197 sizeof(struct in_addr)); 1198 if (ifa->ifa_dstaddr != NULL) 1199 memcpy(&n->peer, &((struct sockaddr_in *) 1200 ifa->ifa_dstaddr)->sin_addr.s_addr, 1201 sizeof(struct in_addr)); 1202 } else if (n->af == AF_INET6) { 1203 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1204 ifa->ifa_addr)->sin6_addr.s6_addr, 1205 sizeof(struct in6_addr)); 1206 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1207 ifa->ifa_netmask)->sin6_addr.s6_addr, 1208 sizeof(struct in6_addr)); 1209 if (ifa->ifa_broadaddr != NULL) 1210 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1211 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1212 sizeof(struct in6_addr)); 1213 if (ifa->ifa_dstaddr != NULL) 1214 memcpy(&n->peer, &((struct sockaddr_in6 *) 1215 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1216 sizeof(struct in6_addr)); 1217 n->ifindex = ((struct sockaddr_in6 *) 1218 ifa->ifa_addr)->sin6_scope_id; 1219 } 1220 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1221 err(1, "ifa_load: strdup"); 1222 n->next = NULL; 1223 n->tail = n; 1224 if (h == NULL) 1225 h = n; 1226 else { 1227 h->tail->next = n; 1228 h->tail = n; 1229 } 1230 } 1231 1232 iftab = h; 1233 freeifaddrs(ifap); 1234 } 1235 1236 struct node_host * 1237 ifa_exists(const char *ifa_name) 1238 { 1239 struct node_host *n; 1240 struct ifgroupreq ifgr; 1241 int s; 1242 1243 if (iftab == NULL) 1244 ifa_load(); 1245 1246 /* check wether this is a group */ 1247 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) 1248 err(1, "socket"); 1249 bzero(&ifgr, sizeof(ifgr)); 1250 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1251 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == 0) { 1252 /* fake a node_host */ 1253 if ((n = calloc(1, sizeof(*n))) == NULL) 1254 err(1, "calloc"); 1255 if ((n->ifname = strdup(ifa_name)) == NULL) 1256 err(1, "strdup"); 1257 close(s); 1258 return (n); 1259 } 1260 close(s); 1261 1262 for (n = iftab; n; n = n->next) { 1263 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1264 return (n); 1265 } 1266 1267 return (NULL); 1268 } 1269 1270 struct node_host * 1271 ifa_grouplookup(const char *ifa_name, int flags) 1272 { 1273 struct ifg_req *ifg; 1274 struct ifgroupreq ifgr; 1275 int s, len; 1276 struct node_host *n, *h = NULL; 1277 1278 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) 1279 err(1, "socket"); 1280 bzero(&ifgr, sizeof(ifgr)); 1281 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1282 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) { 1283 close(s); 1284 return (NULL); 1285 } 1286 1287 len = ifgr.ifgr_len; 1288 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1289 err(1, "calloc"); 1290 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1291 err(1, "SIOCGIFGMEMB"); 1292 1293 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1294 ifg++) { 1295 len -= sizeof(struct ifg_req); 1296 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1297 continue; 1298 if (h == NULL) 1299 h = n; 1300 else { 1301 h->tail->next = n; 1302 h->tail = n->tail; 1303 } 1304 } 1305 free(ifgr.ifgr_groups); 1306 close(s); 1307 1308 return (h); 1309 } 1310 1311 struct node_host * 1312 ifa_lookup(const char *ifa_name, int flags) 1313 { 1314 struct node_host *p = NULL, *h = NULL, *n = NULL; 1315 int got4 = 0, got6 = 0; 1316 const char *last_if = NULL; 1317 1318 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1319 return (h); 1320 1321 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1322 ifa_name = NULL; 1323 1324 if (iftab == NULL) 1325 ifa_load(); 1326 1327 for (p = iftab; p; p = p->next) { 1328 if (ifa_skip_if(ifa_name, p)) 1329 continue; 1330 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1331 continue; 1332 if ((flags & PFI_AFLAG_BROADCAST) && 1333 !(p->ifa_flags & IFF_BROADCAST)) 1334 continue; 1335 if ((flags & PFI_AFLAG_PEER) && 1336 !(p->ifa_flags & IFF_POINTOPOINT)) 1337 continue; 1338 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1339 continue; 1340 if (last_if == NULL || strcmp(last_if, p->ifname)) 1341 got4 = got6 = 0; 1342 last_if = p->ifname; 1343 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1344 continue; 1345 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1346 continue; 1347 if (p->af == AF_INET) 1348 got4 = 1; 1349 else 1350 got6 = 1; 1351 n = calloc(1, sizeof(struct node_host)); 1352 if (n == NULL) 1353 err(1, "address: calloc"); 1354 n->af = p->af; 1355 if (flags & PFI_AFLAG_BROADCAST) 1356 memcpy(&n->addr.v.a.addr, &p->bcast, 1357 sizeof(struct pf_addr)); 1358 else if (flags & PFI_AFLAG_PEER) 1359 memcpy(&n->addr.v.a.addr, &p->peer, 1360 sizeof(struct pf_addr)); 1361 else 1362 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1363 sizeof(struct pf_addr)); 1364 if (flags & PFI_AFLAG_NETWORK) 1365 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1366 else { 1367 if (n->af == AF_INET) { 1368 if (p->ifa_flags & IFF_LOOPBACK && 1369 p->ifa_flags & IFF_LINK1) 1370 memcpy(&n->addr.v.a.mask, 1371 &p->addr.v.a.mask, 1372 sizeof(struct pf_addr)); 1373 else 1374 set_ipmask(n, 32); 1375 } else 1376 set_ipmask(n, 128); 1377 } 1378 n->ifindex = p->ifindex; 1379 1380 n->next = NULL; 1381 n->tail = n; 1382 if (h == NULL) 1383 h = n; 1384 else { 1385 h->tail->next = n; 1386 h->tail = n; 1387 } 1388 } 1389 return (h); 1390 } 1391 1392 int 1393 ifa_skip_if(const char *filter, struct node_host *p) 1394 { 1395 int n; 1396 1397 if (p->af != AF_INET && p->af != AF_INET6) 1398 return (1); 1399 if (filter == NULL || !*filter) 1400 return (0); 1401 if (!strcmp(p->ifname, filter)) 1402 return (0); /* exact match */ 1403 n = strlen(filter); 1404 if (n < 1 || n >= IFNAMSIZ) 1405 return (1); /* sanity check */ 1406 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1407 return (1); /* only do exact match in that case */ 1408 if (strncmp(p->ifname, filter, n)) 1409 return (1); /* prefix doesn't match */ 1410 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1411 } 1412 1413 1414 struct node_host * 1415 host(const char *s) 1416 { 1417 struct node_host *h = NULL; 1418 int mask, v4mask, v6mask, cont = 1; 1419 char *p, *q, *ps; 1420 1421 if ((p = strrchr(s, '/')) != NULL) { 1422 mask = strtol(p+1, &q, 0); 1423 if (!q || *q || mask > 128 || q == (p+1)) { 1424 fprintf(stderr, "invalid netmask '%s'\n", p); 1425 return (NULL); 1426 } 1427 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1428 err(1, "host: malloc"); 1429 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1430 v4mask = v6mask = mask; 1431 } else { 1432 if ((ps = strdup(s)) == NULL) 1433 err(1, "host: strdup"); 1434 v4mask = 32; 1435 v6mask = 128; 1436 mask = -1; 1437 } 1438 1439 /* interface with this name exists? */ 1440 if (cont && (h = host_if(ps, mask)) != NULL) 1441 cont = 0; 1442 1443 /* IPv4 address? */ 1444 if (cont && (h = host_v4(s, mask)) != NULL) 1445 cont = 0; 1446 1447 /* IPv6 address? */ 1448 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1449 cont = 0; 1450 1451 /* dns lookup */ 1452 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1453 cont = 0; 1454 free(ps); 1455 1456 if (h == NULL || cont == 1) { 1457 fprintf(stderr, "no IP address found for %s\n", s); 1458 return (NULL); 1459 } 1460 return (h); 1461 } 1462 1463 struct node_host * 1464 host_if(const char *s, int mask) 1465 { 1466 struct node_host *n, *h = NULL; 1467 char *p, *ps; 1468 int flags = 0; 1469 1470 if ((ps = strdup(s)) == NULL) 1471 err(1, "host_if: strdup"); 1472 while ((p = strrchr(ps, ':')) != NULL) { 1473 if (!strcmp(p+1, "network")) 1474 flags |= PFI_AFLAG_NETWORK; 1475 else if (!strcmp(p+1, "broadcast")) 1476 flags |= PFI_AFLAG_BROADCAST; 1477 else if (!strcmp(p+1, "peer")) 1478 flags |= PFI_AFLAG_PEER; 1479 else if (!strcmp(p+1, "0")) 1480 flags |= PFI_AFLAG_NOALIAS; 1481 else { 1482 free(ps); 1483 return (NULL); 1484 } 1485 *p = '\0'; 1486 } 1487 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1488 fprintf(stderr, "illegal combination of interface modifiers\n"); 1489 free(ps); 1490 return (NULL); 1491 } 1492 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1493 fprintf(stderr, "network or broadcast lookup, but " 1494 "extra netmask given\n"); 1495 free(ps); 1496 return (NULL); 1497 } 1498 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1499 /* interface with this name exists */ 1500 h = ifa_lookup(ps, flags); 1501 for (n = h; n != NULL && mask > -1; n = n->next) 1502 set_ipmask(n, mask); 1503 } 1504 1505 free(ps); 1506 return (h); 1507 } 1508 1509 struct node_host * 1510 host_v4(const char *s, int mask) 1511 { 1512 struct node_host *h = NULL; 1513 struct in_addr ina; 1514 int bits = 32; 1515 1516 memset(&ina, 0, sizeof(struct in_addr)); 1517 if (strrchr(s, '/') != NULL) { 1518 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1519 return (NULL); 1520 } else { 1521 if (inet_pton(AF_INET, s, &ina) != 1) 1522 return (NULL); 1523 } 1524 1525 h = calloc(1, sizeof(struct node_host)); 1526 if (h == NULL) 1527 err(1, "address: calloc"); 1528 h->ifname = NULL; 1529 h->af = AF_INET; 1530 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1531 set_ipmask(h, bits); 1532 h->next = NULL; 1533 h->tail = h; 1534 1535 return (h); 1536 } 1537 1538 struct node_host * 1539 host_v6(const char *s, int mask) 1540 { 1541 struct addrinfo hints, *res; 1542 struct node_host *h = NULL; 1543 1544 memset(&hints, 0, sizeof(hints)); 1545 hints.ai_family = AF_INET6; 1546 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1547 hints.ai_flags = AI_NUMERICHOST; 1548 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1549 h = calloc(1, sizeof(struct node_host)); 1550 if (h == NULL) 1551 err(1, "address: calloc"); 1552 h->ifname = NULL; 1553 h->af = AF_INET6; 1554 memcpy(&h->addr.v.a.addr, 1555 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1556 sizeof(h->addr.v.a.addr)); 1557 h->ifindex = 1558 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1559 set_ipmask(h, mask); 1560 freeaddrinfo(res); 1561 h->next = NULL; 1562 h->tail = h; 1563 } 1564 1565 return (h); 1566 } 1567 1568 struct node_host * 1569 host_dns(const char *s, int v4mask, int v6mask) 1570 { 1571 struct addrinfo hints, *res0, *res; 1572 struct node_host *n, *h = NULL; 1573 int error, noalias = 0; 1574 int got4 = 0, got6 = 0; 1575 char *p, *ps; 1576 1577 if ((ps = strdup(s)) == NULL) 1578 err(1, "host_dns: strdup"); 1579 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1580 noalias = 1; 1581 *p = '\0'; 1582 } 1583 memset(&hints, 0, sizeof(hints)); 1584 hints.ai_family = PF_UNSPEC; 1585 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1586 error = getaddrinfo(ps, NULL, &hints, &res0); 1587 if (error) { 1588 free(ps); 1589 return (h); 1590 } 1591 1592 for (res = res0; res; res = res->ai_next) { 1593 if (res->ai_family != AF_INET && 1594 res->ai_family != AF_INET6) 1595 continue; 1596 if (noalias) { 1597 if (res->ai_family == AF_INET) { 1598 if (got4) 1599 continue; 1600 got4 = 1; 1601 } else { 1602 if (got6) 1603 continue; 1604 got6 = 1; 1605 } 1606 } 1607 n = calloc(1, sizeof(struct node_host)); 1608 if (n == NULL) 1609 err(1, "host_dns: calloc"); 1610 n->ifname = NULL; 1611 n->af = res->ai_family; 1612 if (res->ai_family == AF_INET) { 1613 memcpy(&n->addr.v.a.addr, 1614 &((struct sockaddr_in *) 1615 res->ai_addr)->sin_addr.s_addr, 1616 sizeof(struct in_addr)); 1617 set_ipmask(n, v4mask); 1618 } else { 1619 memcpy(&n->addr.v.a.addr, 1620 &((struct sockaddr_in6 *) 1621 res->ai_addr)->sin6_addr.s6_addr, 1622 sizeof(struct in6_addr)); 1623 n->ifindex = 1624 ((struct sockaddr_in6 *) 1625 res->ai_addr)->sin6_scope_id; 1626 set_ipmask(n, v6mask); 1627 } 1628 n->next = NULL; 1629 n->tail = n; 1630 if (h == NULL) 1631 h = n; 1632 else { 1633 h->tail->next = n; 1634 h->tail = n; 1635 } 1636 } 1637 freeaddrinfo(res0); 1638 free(ps); 1639 1640 return (h); 1641 } 1642 1643 /* 1644 * convert a hostname to a list of addresses and put them in the given buffer. 1645 * test: 1646 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1647 */ 1648 int 1649 append_addr(struct pfr_buffer *b, char *s, int test) 1650 { 1651 char *r; 1652 struct node_host *h, *n; 1653 int rv, not = 0; 1654 1655 for (r = s; *r == '!'; r++) 1656 not = !not; 1657 if ((n = host(r)) == NULL) { 1658 errno = 0; 1659 return (-1); 1660 } 1661 rv = append_addr_host(b, n, test, not); 1662 do { 1663 h = n; 1664 n = n->next; 1665 free(h); 1666 } while (n != NULL); 1667 return (rv); 1668 } 1669 1670 /* 1671 * same as previous function, but with a pre-parsed input and the ability 1672 * to "negate" the result. Does not free the node_host list. 1673 * not: 1674 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1675 */ 1676 int 1677 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1678 { 1679 int bits; 1680 struct pfr_addr addr; 1681 1682 do { 1683 bzero(&addr, sizeof(addr)); 1684 addr.pfra_not = n->not ^ not; 1685 addr.pfra_af = n->af; 1686 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1687 switch (n->af) { 1688 case AF_INET: 1689 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1690 bits = 32; 1691 break; 1692 case AF_INET6: 1693 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1694 sizeof(struct in6_addr)); 1695 bits = 128; 1696 break; 1697 default: 1698 errno = EINVAL; 1699 return (-1); 1700 } 1701 if ((test && (not || addr.pfra_net != bits)) || 1702 addr.pfra_net > bits) { 1703 errno = EINVAL; 1704 return (-1); 1705 } 1706 if (pfr_buf_add(b, &addr)) 1707 return (-1); 1708 } while ((n = n->next) != NULL); 1709 1710 return (0); 1711 } 1712 1713 int 1714 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1715 { 1716 struct pfioc_trans_e trans; 1717 1718 bzero(&trans, sizeof(trans)); 1719 trans.rs_num = rs_num; 1720 if (strlcpy(trans.anchor, anchor, 1721 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1722 errx(1, "pfctl_add_trans: strlcpy"); 1723 1724 return pfr_buf_add(buf, &trans); 1725 } 1726 1727 u_int32_t 1728 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1729 { 1730 struct pfioc_trans_e *p; 1731 1732 PFRB_FOREACH(p, buf) 1733 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1734 return (p->ticket); 1735 errx(1, "pfctl_get_ticket: assertion failed"); 1736 } 1737 1738 int 1739 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1740 { 1741 struct pfioc_trans trans; 1742 1743 bzero(&trans, sizeof(trans)); 1744 trans.size = buf->pfrb_size - from; 1745 trans.esize = sizeof(struct pfioc_trans_e); 1746 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1747 return ioctl(dev, cmd, &trans); 1748 } 1749