1 /* $OpenBSD: pfctl_parser.c,v 1.249 2009/10/04 16:08:37 michele 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_PASS: 647 case PF_MATCH: 648 if (sn->rule.nr != -1) 649 printf(", filter rule %u", sn->rule.nr); 650 break; 651 } 652 printf("\n"); 653 } 654 } 655 656 void 657 print_rule(struct pf_rule *r, const char *anchor_call, int verbose) 658 { 659 static const char *actiontypes[] = { "pass", "block", "scrub", 660 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr", 661 "", "", "match"}; 662 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 663 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 664 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 665 int i, opts; 666 667 if (verbose) 668 printf("@%d ", r->nr); 669 if (r->action > PF_MATCH) 670 printf("action(%d)", r->action); 671 else if (anchor_call[0]) { 672 if (anchor_call[0] == '_') { 673 printf("%s", anchortypes[r->action]); 674 } else 675 printf("%s \"%s\"", anchortypes[r->action], 676 anchor_call); 677 } else { 678 printf("%s", actiontypes[r->action]); 679 if (r->natpass) 680 printf(" pass"); 681 } 682 if (r->action == PF_DROP) { 683 if (r->rule_flag & PFRULE_RETURN) 684 printf(" return"); 685 else if (r->rule_flag & PFRULE_RETURNRST) { 686 if (!r->return_ttl) 687 printf(" return-rst"); 688 else 689 printf(" return-rst(ttl %d)", r->return_ttl); 690 } else if (r->rule_flag & PFRULE_RETURNICMP) { 691 const struct icmpcodeent *ic, *ic6; 692 693 ic = geticmpcodebynumber(r->return_icmp >> 8, 694 r->return_icmp & 255, AF_INET); 695 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 696 r->return_icmp6 & 255, AF_INET6); 697 698 switch (r->af) { 699 case AF_INET: 700 printf(" return-icmp"); 701 if (ic == NULL) 702 printf("(%u)", r->return_icmp & 255); 703 else 704 printf("(%s)", ic->name); 705 break; 706 case AF_INET6: 707 printf(" return-icmp6"); 708 if (ic6 == NULL) 709 printf("(%u)", r->return_icmp6 & 255); 710 else 711 printf("(%s)", ic6->name); 712 break; 713 default: 714 printf(" return-icmp"); 715 if (ic == NULL) 716 printf("(%u, ", r->return_icmp & 255); 717 else 718 printf("(%s, ", ic->name); 719 if (ic6 == NULL) 720 printf("%u)", r->return_icmp6 & 255); 721 else 722 printf("%s)", ic6->name); 723 break; 724 } 725 } else 726 printf(" drop"); 727 } 728 if (r->direction == PF_IN) 729 printf(" in"); 730 else if (r->direction == PF_OUT) 731 printf(" out"); 732 if (r->log) { 733 printf(" log"); 734 if (r->log & ~PF_LOG || r->logif) { 735 int count = 0; 736 737 printf(" ("); 738 if (r->log & PF_LOG_ALL) 739 printf("%sall", count++ ? ", " : ""); 740 if (r->log & PF_LOG_SOCKET_LOOKUP) 741 printf("%suser", count++ ? ", " : ""); 742 if (r->logif) 743 printf("%sto pflog%u", count++ ? ", " : "", 744 r->logif); 745 printf(")"); 746 } 747 } 748 if (r->quick) 749 printf(" quick"); 750 if (r->ifname[0]) { 751 if (r->ifnot) 752 printf(" on ! %s", r->ifname); 753 else 754 printf(" on %s", r->ifname); 755 } 756 if (r->af) { 757 if (r->af == AF_INET) 758 printf(" inet"); 759 else 760 printf(" inet6"); 761 } 762 if (r->proto) { 763 struct protoent *p; 764 765 if ((p = getprotobynumber(r->proto)) != NULL) 766 printf(" proto %s", p->p_name); 767 else 768 printf(" proto %u", r->proto); 769 } 770 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 771 verbose); 772 if (r->uid.op) 773 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 774 UID_MAX); 775 if (r->gid.op) 776 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 777 GID_MAX); 778 if (r->flags || r->flagset) { 779 printf(" flags "); 780 print_flags(r->flags); 781 printf("/"); 782 print_flags(r->flagset); 783 } else if ((r->action == PF_PASS || r->action == PF_MATCH) && 784 (!r->proto || r->proto == IPPROTO_TCP) && 785 !(r->rule_flag & PFRULE_FRAGMENT) && 786 !anchor_call[0] && r->keep_state) 787 printf(" flags any"); 788 if (r->type) { 789 const struct icmptypeent *it; 790 791 it = geticmptypebynumber(r->type-1, r->af); 792 if (r->af != AF_INET6) 793 printf(" icmp-type"); 794 else 795 printf(" icmp6-type"); 796 if (it != NULL) 797 printf(" %s", it->name); 798 else 799 printf(" %u", r->type-1); 800 if (r->code) { 801 const struct icmpcodeent *ic; 802 803 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 804 if (ic != NULL) 805 printf(" code %s", ic->name); 806 else 807 printf(" code %u", r->code-1); 808 } 809 } 810 if (r->tos) 811 printf(" tos 0x%2.2x", r->tos); 812 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 813 printf(" no state"); 814 else if (r->keep_state == PF_STATE_NORMAL) 815 printf(" keep state"); 816 else if (r->keep_state == PF_STATE_MODULATE) 817 printf(" modulate state"); 818 else if (r->keep_state == PF_STATE_SYNPROXY) 819 printf(" synproxy state"); 820 if (r->prob) { 821 char buf[20]; 822 823 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 824 for (i = strlen(buf)-1; i > 0; i--) { 825 if (buf[i] == '0') 826 buf[i] = '\0'; 827 else { 828 if (buf[i] == '.') 829 buf[i] = '\0'; 830 break; 831 } 832 } 833 printf(" probability %s%%", buf); 834 } 835 opts = 0; 836 if (r->max_states || r->max_src_nodes || r->max_src_states) 837 opts = 1; 838 if (r->rule_flag & PFRULE_NOSYNC) 839 opts = 1; 840 if (r->rule_flag & PFRULE_SRCTRACK) 841 opts = 1; 842 if (r->rule_flag & PFRULE_IFBOUND) 843 opts = 1; 844 if (r->rule_flag & PFRULE_STATESLOPPY) 845 opts = 1; 846 for (i = 0; !opts && i < PFTM_MAX; ++i) 847 if (r->timeout[i]) 848 opts = 1; 849 if (opts) { 850 printf(" ("); 851 if (r->max_states) { 852 printf("max %u", r->max_states); 853 opts = 0; 854 } 855 if (r->rule_flag & PFRULE_NOSYNC) { 856 if (!opts) 857 printf(", "); 858 printf("no-sync"); 859 opts = 0; 860 } 861 if (r->rule_flag & PFRULE_SRCTRACK) { 862 if (!opts) 863 printf(", "); 864 printf("source-track"); 865 if (r->rule_flag & PFRULE_RULESRCTRACK) 866 printf(" rule"); 867 else 868 printf(" global"); 869 opts = 0; 870 } 871 if (r->max_src_states) { 872 if (!opts) 873 printf(", "); 874 printf("max-src-states %u", r->max_src_states); 875 opts = 0; 876 } 877 if (r->max_src_conn) { 878 if (!opts) 879 printf(", "); 880 printf("max-src-conn %u", r->max_src_conn); 881 opts = 0; 882 } 883 if (r->max_src_conn_rate.limit) { 884 if (!opts) 885 printf(", "); 886 printf("max-src-conn-rate %u/%u", 887 r->max_src_conn_rate.limit, 888 r->max_src_conn_rate.seconds); 889 opts = 0; 890 } 891 if (r->max_src_nodes) { 892 if (!opts) 893 printf(", "); 894 printf("max-src-nodes %u", r->max_src_nodes); 895 opts = 0; 896 } 897 if (r->overload_tblname[0]) { 898 if (!opts) 899 printf(", "); 900 printf("overload <%s>", r->overload_tblname); 901 if (r->flush) 902 printf(" flush"); 903 if (r->flush & PF_FLUSH_GLOBAL) 904 printf(" global"); 905 } 906 if (r->rule_flag & PFRULE_IFBOUND) { 907 if (!opts) 908 printf(", "); 909 printf("if-bound"); 910 opts = 0; 911 } 912 if (r->rule_flag & PFRULE_STATESLOPPY) { 913 if (!opts) 914 printf(", "); 915 printf("sloppy"); 916 opts = 0; 917 } 918 if (r->rule_flag & PFRULE_PFLOW) { 919 if (!opts) 920 printf(", "); 921 printf("pflow"); 922 opts = 0; 923 } 924 for (i = 0; i < PFTM_MAX; ++i) 925 if (r->timeout[i]) { 926 int j; 927 928 if (!opts) 929 printf(", "); 930 opts = 0; 931 for (j = 0; pf_timeouts[j].name != NULL; 932 ++j) 933 if (pf_timeouts[j].timeout == i) 934 break; 935 printf("%s %u", pf_timeouts[j].name == NULL ? 936 "inv.timeout" : pf_timeouts[j].name, 937 r->timeout[i]); 938 } 939 printf(")"); 940 } 941 942 if (r->rule_flag & PFRULE_FRAGMENT) 943 printf(" fragment"); 944 945 if (r->scrub_flags >= PFSTATE_NODF || r->min_ttl || r->max_mss) { 946 printf(" scrub ("); 947 opts = 1; 948 if (r->scrub_flags & PFSTATE_NODF) { 949 printf("no-df"); 950 opts = 0; 951 } 952 if (r->scrub_flags & PFSTATE_RANDOMID) { 953 if (!opts) 954 printf(" "); 955 printf("random-id"); 956 opts = 0; 957 } 958 if (r->min_ttl) { 959 if (!opts) 960 printf(" "); 961 printf("min-ttl %d", r->min_ttl); 962 opts = 0; 963 } 964 if (r->scrub_flags & PFSTATE_SETTOS) { 965 if (!opts) 966 printf(" "); 967 printf("set-tos 0x%2.2x", r->set_tos); 968 opts = 0; 969 } 970 if (r->scrub_flags & PFSTATE_SCRUB_TCP) { 971 if (!opts) 972 printf(" "); 973 printf("reassemble tcp"); 974 opts = 0; 975 } 976 if (r->max_mss) { 977 if (!opts) 978 printf(" "); 979 printf("max-mss %d", r->max_mss); 980 opts = 0; 981 } 982 printf(")"); 983 } 984 985 if (r->allow_opts) 986 printf(" allow-opts"); 987 if (r->label[0]) 988 printf(" label \"%s\"", r->label); 989 if (r->qname[0] && r->pqname[0]) 990 printf(" queue(%s, %s)", r->qname, r->pqname); 991 else if (r->qname[0]) 992 printf(" queue %s", r->qname); 993 if (r->tagname[0]) 994 printf(" tag %s", r->tagname); 995 if (r->match_tagname[0]) { 996 if (r->match_tag_not) 997 printf(" !"); 998 printf(" tagged %s", r->match_tagname); 999 } 1000 if (r->rtableid != -1) 1001 printf(" rtable %u", r->rtableid); 1002 if (r->divert.port) { 1003 if (PF_AZERO(&r->divert.addr, r->af)) { 1004 printf(" divert-reply"); 1005 } else { 1006 /* XXX cut&paste from print_addr */ 1007 char buf[48]; 1008 1009 printf(" divert-to "); 1010 if (inet_ntop(r->af, &r->divert.addr, buf, 1011 sizeof(buf)) == NULL) 1012 printf("?"); 1013 else 1014 printf("%s", buf); 1015 printf(" port %u", ntohs(r->divert.port)); 1016 } 1017 } 1018 if (r->divert_packet.port) 1019 printf(" divert-packet port %u", ntohs(r->divert_packet.port)); 1020 if (!anchor_call[0] && !TAILQ_EMPTY(&r->nat.list)) { 1021 printf (" nat-to "); 1022 print_pool(&r->nat, r->nat.proxy_port[0], 1023 r->nat.proxy_port[1], r->af, PF_NAT); 1024 } 1025 if (!r->rt && !anchor_call[0] && !TAILQ_EMPTY(&r->rdr.list)) { 1026 printf (" rdr-to "); 1027 print_pool(&r->rdr, r->rdr.proxy_port[0], 1028 r->rdr.proxy_port[1], r->af, PF_RDR); 1029 } 1030 if (r->rt) { 1031 if (r->rt == PF_ROUTETO) 1032 printf(" route-to"); 1033 else if (r->rt == PF_REPLYTO) 1034 printf(" reply-to"); 1035 else if (r->rt == PF_DUPTO) 1036 printf(" dup-to"); 1037 else if (r->rt == PF_FASTROUTE) 1038 printf(" fastroute"); 1039 if (r->rt != PF_FASTROUTE) { 1040 printf(" "); 1041 print_pool(&r->rdr, 0, 0, r->af, PF_PASS); 1042 } 1043 } 1044 } 1045 1046 void 1047 print_tabledef(const char *name, int flags, int addrs, 1048 struct node_tinithead *nodes) 1049 { 1050 struct node_tinit *ti, *nti; 1051 struct node_host *h; 1052 1053 printf("table <%s>", name); 1054 if (flags & PFR_TFLAG_CONST) 1055 printf(" const"); 1056 if (flags & PFR_TFLAG_PERSIST) 1057 printf(" persist"); 1058 if (flags & PFR_TFLAG_COUNTERS) 1059 printf(" counters"); 1060 SIMPLEQ_FOREACH(ti, nodes, entries) { 1061 if (ti->file) { 1062 printf(" file \"%s\"", ti->file); 1063 continue; 1064 } 1065 printf(" {"); 1066 for (;;) { 1067 for (h = ti->host; h != NULL; h = h->next) { 1068 printf(h->not ? " !" : " "); 1069 print_addr(&h->addr, h->af, 0); 1070 } 1071 nti = SIMPLEQ_NEXT(ti, entries); 1072 if (nti != NULL && nti->file == NULL) 1073 ti = nti; /* merge lists */ 1074 else 1075 break; 1076 } 1077 printf(" }"); 1078 } 1079 if (addrs && SIMPLEQ_EMPTY(nodes)) 1080 printf(" { }"); 1081 printf("\n"); 1082 } 1083 1084 int 1085 parse_flags(char *s) 1086 { 1087 char *p, *q; 1088 u_int8_t f = 0; 1089 1090 for (p = s; *p; p++) { 1091 if ((q = strchr(tcpflags, *p)) == NULL) 1092 return -1; 1093 else 1094 f |= 1 << (q - tcpflags); 1095 } 1096 return (f ? f : PF_TH_ALL); 1097 } 1098 1099 void 1100 set_ipmask(struct node_host *h, u_int8_t b) 1101 { 1102 struct pf_addr *m, *n; 1103 int i, j = 0; 1104 1105 m = &h->addr.v.a.mask; 1106 memset(m, 0, sizeof(*m)); 1107 1108 while (b >= 32) { 1109 m->addr32[j++] = 0xffffffff; 1110 b -= 32; 1111 } 1112 for (i = 31; i > 31-b; --i) 1113 m->addr32[j] |= (1 << i); 1114 if (b) 1115 m->addr32[j] = htonl(m->addr32[j]); 1116 1117 /* Mask off bits of the address that will never be used. */ 1118 n = &h->addr.v.a.addr; 1119 if (h->addr.type == PF_ADDR_ADDRMASK) 1120 for (i = 0; i < 4; i++) 1121 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1122 } 1123 1124 int 1125 check_netmask(struct node_host *h, sa_family_t af) 1126 { 1127 struct node_host *n = NULL; 1128 struct pf_addr *m; 1129 1130 for (n = h; n != NULL; n = n->next) { 1131 if (h->addr.type == PF_ADDR_TABLE) 1132 continue; 1133 m = &h->addr.v.a.mask; 1134 /* fix up netmask for dynaddr */ 1135 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1136 unmask(m, AF_INET6) > 32) 1137 set_ipmask(n, 32); 1138 /* netmasks > 32 bit are invalid on v4 */ 1139 if (af == AF_INET && 1140 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1141 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1142 unmask(m, AF_INET6)); 1143 return (1); 1144 } 1145 } 1146 return (0); 1147 } 1148 1149 /* interface lookup routines */ 1150 1151 struct node_host *iftab; 1152 1153 void 1154 ifa_load(void) 1155 { 1156 struct ifaddrs *ifap, *ifa; 1157 struct node_host *n = NULL, *h = NULL; 1158 1159 if (getifaddrs(&ifap) < 0) 1160 err(1, "getifaddrs"); 1161 1162 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1163 if (!(ifa->ifa_addr->sa_family == AF_INET || 1164 ifa->ifa_addr->sa_family == AF_INET6 || 1165 ifa->ifa_addr->sa_family == AF_LINK)) 1166 continue; 1167 n = calloc(1, sizeof(struct node_host)); 1168 if (n == NULL) 1169 err(1, "address: calloc"); 1170 n->af = ifa->ifa_addr->sa_family; 1171 n->ifa_flags = ifa->ifa_flags; 1172 #ifdef __KAME__ 1173 if (n->af == AF_INET6 && 1174 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1175 ifa->ifa_addr)->sin6_addr) && 1176 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1177 0) { 1178 struct sockaddr_in6 *sin6; 1179 1180 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1181 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1182 sin6->sin6_addr.s6_addr[3]; 1183 sin6->sin6_addr.s6_addr[2] = 0; 1184 sin6->sin6_addr.s6_addr[3] = 0; 1185 } 1186 #endif 1187 n->ifindex = 0; 1188 if (n->af == AF_INET) { 1189 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1190 ifa->ifa_addr)->sin_addr.s_addr, 1191 sizeof(struct in_addr)); 1192 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1193 ifa->ifa_netmask)->sin_addr.s_addr, 1194 sizeof(struct in_addr)); 1195 if (ifa->ifa_broadaddr != NULL) 1196 memcpy(&n->bcast, &((struct sockaddr_in *) 1197 ifa->ifa_broadaddr)->sin_addr.s_addr, 1198 sizeof(struct in_addr)); 1199 if (ifa->ifa_dstaddr != NULL) 1200 memcpy(&n->peer, &((struct sockaddr_in *) 1201 ifa->ifa_dstaddr)->sin_addr.s_addr, 1202 sizeof(struct in_addr)); 1203 } else if (n->af == AF_INET6) { 1204 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1205 ifa->ifa_addr)->sin6_addr.s6_addr, 1206 sizeof(struct in6_addr)); 1207 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1208 ifa->ifa_netmask)->sin6_addr.s6_addr, 1209 sizeof(struct in6_addr)); 1210 if (ifa->ifa_broadaddr != NULL) 1211 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1212 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1213 sizeof(struct in6_addr)); 1214 if (ifa->ifa_dstaddr != NULL) 1215 memcpy(&n->peer, &((struct sockaddr_in6 *) 1216 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1217 sizeof(struct in6_addr)); 1218 n->ifindex = ((struct sockaddr_in6 *) 1219 ifa->ifa_addr)->sin6_scope_id; 1220 } 1221 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1222 err(1, "ifa_load: strdup"); 1223 n->next = NULL; 1224 n->tail = n; 1225 if (h == NULL) 1226 h = n; 1227 else { 1228 h->tail->next = n; 1229 h->tail = n; 1230 } 1231 } 1232 1233 iftab = h; 1234 freeifaddrs(ifap); 1235 } 1236 1237 struct node_host * 1238 ifa_exists(const char *ifa_name) 1239 { 1240 struct node_host *n; 1241 struct ifgroupreq ifgr; 1242 int s; 1243 1244 if (iftab == NULL) 1245 ifa_load(); 1246 1247 /* check wether this is a group */ 1248 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) 1249 err(1, "socket"); 1250 bzero(&ifgr, sizeof(ifgr)); 1251 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1252 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == 0) { 1253 /* fake a node_host */ 1254 if ((n = calloc(1, sizeof(*n))) == NULL) 1255 err(1, "calloc"); 1256 if ((n->ifname = strdup(ifa_name)) == NULL) 1257 err(1, "strdup"); 1258 close(s); 1259 return (n); 1260 } 1261 close(s); 1262 1263 for (n = iftab; n; n = n->next) { 1264 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1265 return (n); 1266 } 1267 1268 return (NULL); 1269 } 1270 1271 struct node_host * 1272 ifa_grouplookup(const char *ifa_name, int flags) 1273 { 1274 struct ifg_req *ifg; 1275 struct ifgroupreq ifgr; 1276 int s, len; 1277 struct node_host *n, *h = NULL; 1278 1279 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) 1280 err(1, "socket"); 1281 bzero(&ifgr, sizeof(ifgr)); 1282 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1283 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) { 1284 close(s); 1285 return (NULL); 1286 } 1287 1288 len = ifgr.ifgr_len; 1289 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1290 err(1, "calloc"); 1291 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1292 err(1, "SIOCGIFGMEMB"); 1293 1294 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1295 ifg++) { 1296 len -= sizeof(struct ifg_req); 1297 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1298 continue; 1299 if (h == NULL) 1300 h = n; 1301 else { 1302 h->tail->next = n; 1303 h->tail = n->tail; 1304 } 1305 } 1306 free(ifgr.ifgr_groups); 1307 close(s); 1308 1309 return (h); 1310 } 1311 1312 struct node_host * 1313 ifa_lookup(const char *ifa_name, int flags) 1314 { 1315 struct node_host *p = NULL, *h = NULL, *n = NULL; 1316 int got4 = 0, got6 = 0; 1317 const char *last_if = NULL; 1318 1319 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1320 return (h); 1321 1322 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1323 ifa_name = NULL; 1324 1325 if (iftab == NULL) 1326 ifa_load(); 1327 1328 for (p = iftab; p; p = p->next) { 1329 if (ifa_skip_if(ifa_name, p)) 1330 continue; 1331 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1332 continue; 1333 if ((flags & PFI_AFLAG_BROADCAST) && 1334 !(p->ifa_flags & IFF_BROADCAST)) 1335 continue; 1336 if ((flags & PFI_AFLAG_PEER) && 1337 !(p->ifa_flags & IFF_POINTOPOINT)) 1338 continue; 1339 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1340 continue; 1341 if (last_if == NULL || strcmp(last_if, p->ifname)) 1342 got4 = got6 = 0; 1343 last_if = p->ifname; 1344 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1345 continue; 1346 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1347 continue; 1348 if (p->af == AF_INET) 1349 got4 = 1; 1350 else 1351 got6 = 1; 1352 n = calloc(1, sizeof(struct node_host)); 1353 if (n == NULL) 1354 err(1, "address: calloc"); 1355 n->af = p->af; 1356 if (flags & PFI_AFLAG_BROADCAST) 1357 memcpy(&n->addr.v.a.addr, &p->bcast, 1358 sizeof(struct pf_addr)); 1359 else if (flags & PFI_AFLAG_PEER) 1360 memcpy(&n->addr.v.a.addr, &p->peer, 1361 sizeof(struct pf_addr)); 1362 else 1363 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1364 sizeof(struct pf_addr)); 1365 if (flags & PFI_AFLAG_NETWORK) 1366 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1367 else { 1368 if (n->af == AF_INET) { 1369 if (p->ifa_flags & IFF_LOOPBACK && 1370 p->ifa_flags & IFF_LINK1) 1371 memcpy(&n->addr.v.a.mask, 1372 &p->addr.v.a.mask, 1373 sizeof(struct pf_addr)); 1374 else 1375 set_ipmask(n, 32); 1376 } else 1377 set_ipmask(n, 128); 1378 } 1379 n->ifindex = p->ifindex; 1380 1381 n->next = NULL; 1382 n->tail = n; 1383 if (h == NULL) 1384 h = n; 1385 else { 1386 h->tail->next = n; 1387 h->tail = n; 1388 } 1389 } 1390 return (h); 1391 } 1392 1393 int 1394 ifa_skip_if(const char *filter, struct node_host *p) 1395 { 1396 int n; 1397 1398 if (p->af != AF_INET && p->af != AF_INET6) 1399 return (1); 1400 if (filter == NULL || !*filter) 1401 return (0); 1402 if (!strcmp(p->ifname, filter)) 1403 return (0); /* exact match */ 1404 n = strlen(filter); 1405 if (n < 1 || n >= IFNAMSIZ) 1406 return (1); /* sanity check */ 1407 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1408 return (1); /* only do exact match in that case */ 1409 if (strncmp(p->ifname, filter, n)) 1410 return (1); /* prefix doesn't match */ 1411 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1412 } 1413 1414 1415 struct node_host * 1416 host(const char *s) 1417 { 1418 struct node_host *h = NULL; 1419 int mask, v4mask, v6mask, cont = 1; 1420 char *p, *q, *ps; 1421 1422 if ((p = strrchr(s, '/')) != NULL) { 1423 mask = strtol(p+1, &q, 0); 1424 if (!q || *q || mask > 128 || q == (p+1)) { 1425 fprintf(stderr, "invalid netmask '%s'\n", p); 1426 return (NULL); 1427 } 1428 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1429 err(1, "host: malloc"); 1430 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1431 v4mask = v6mask = mask; 1432 } else { 1433 if ((ps = strdup(s)) == NULL) 1434 err(1, "host: strdup"); 1435 v4mask = 32; 1436 v6mask = 128; 1437 mask = -1; 1438 } 1439 1440 /* interface with this name exists? */ 1441 if (cont && (h = host_if(ps, mask)) != NULL) 1442 cont = 0; 1443 1444 /* IPv4 address? */ 1445 if (cont && (h = host_v4(s, mask)) != NULL) 1446 cont = 0; 1447 1448 /* IPv6 address? */ 1449 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1450 cont = 0; 1451 1452 /* dns lookup */ 1453 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1454 cont = 0; 1455 free(ps); 1456 1457 if (h == NULL || cont == 1) { 1458 fprintf(stderr, "no IP address found for %s\n", s); 1459 return (NULL); 1460 } 1461 return (h); 1462 } 1463 1464 struct node_host * 1465 host_if(const char *s, int mask) 1466 { 1467 struct node_host *n, *h = NULL; 1468 char *p, *ps; 1469 int flags = 0; 1470 1471 if ((ps = strdup(s)) == NULL) 1472 err(1, "host_if: strdup"); 1473 while ((p = strrchr(ps, ':')) != NULL) { 1474 if (!strcmp(p+1, "network")) 1475 flags |= PFI_AFLAG_NETWORK; 1476 else if (!strcmp(p+1, "broadcast")) 1477 flags |= PFI_AFLAG_BROADCAST; 1478 else if (!strcmp(p+1, "peer")) 1479 flags |= PFI_AFLAG_PEER; 1480 else if (!strcmp(p+1, "0")) 1481 flags |= PFI_AFLAG_NOALIAS; 1482 else { 1483 free(ps); 1484 return (NULL); 1485 } 1486 *p = '\0'; 1487 } 1488 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1489 fprintf(stderr, "illegal combination of interface modifiers\n"); 1490 free(ps); 1491 return (NULL); 1492 } 1493 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1494 fprintf(stderr, "network or broadcast lookup, but " 1495 "extra netmask given\n"); 1496 free(ps); 1497 return (NULL); 1498 } 1499 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1500 /* interface with this name exists */ 1501 h = ifa_lookup(ps, flags); 1502 for (n = h; n != NULL && mask > -1; n = n->next) 1503 set_ipmask(n, mask); 1504 } 1505 1506 free(ps); 1507 return (h); 1508 } 1509 1510 struct node_host * 1511 host_v4(const char *s, int mask) 1512 { 1513 struct node_host *h = NULL; 1514 struct in_addr ina; 1515 int bits = 32; 1516 1517 memset(&ina, 0, sizeof(struct in_addr)); 1518 if (strrchr(s, '/') != NULL) { 1519 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1520 return (NULL); 1521 } else { 1522 if (inet_pton(AF_INET, s, &ina) != 1) 1523 return (NULL); 1524 } 1525 1526 h = calloc(1, sizeof(struct node_host)); 1527 if (h == NULL) 1528 err(1, "address: calloc"); 1529 h->ifname = NULL; 1530 h->af = AF_INET; 1531 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1532 set_ipmask(h, bits); 1533 h->next = NULL; 1534 h->tail = h; 1535 1536 return (h); 1537 } 1538 1539 struct node_host * 1540 host_v6(const char *s, int mask) 1541 { 1542 struct addrinfo hints, *res; 1543 struct node_host *h = NULL; 1544 1545 memset(&hints, 0, sizeof(hints)); 1546 hints.ai_family = AF_INET6; 1547 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1548 hints.ai_flags = AI_NUMERICHOST; 1549 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1550 h = calloc(1, sizeof(struct node_host)); 1551 if (h == NULL) 1552 err(1, "address: calloc"); 1553 h->ifname = NULL; 1554 h->af = AF_INET6; 1555 memcpy(&h->addr.v.a.addr, 1556 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1557 sizeof(h->addr.v.a.addr)); 1558 h->ifindex = 1559 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1560 set_ipmask(h, mask); 1561 freeaddrinfo(res); 1562 h->next = NULL; 1563 h->tail = h; 1564 } 1565 1566 return (h); 1567 } 1568 1569 struct node_host * 1570 host_dns(const char *s, int v4mask, int v6mask) 1571 { 1572 struct addrinfo hints, *res0, *res; 1573 struct node_host *n, *h = NULL; 1574 int error, noalias = 0; 1575 int got4 = 0, got6 = 0; 1576 char *p, *ps; 1577 1578 if ((ps = strdup(s)) == NULL) 1579 err(1, "host_dns: strdup"); 1580 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1581 noalias = 1; 1582 *p = '\0'; 1583 } 1584 memset(&hints, 0, sizeof(hints)); 1585 hints.ai_family = PF_UNSPEC; 1586 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1587 error = getaddrinfo(ps, NULL, &hints, &res0); 1588 if (error) { 1589 free(ps); 1590 return (h); 1591 } 1592 1593 for (res = res0; res; res = res->ai_next) { 1594 if (res->ai_family != AF_INET && 1595 res->ai_family != AF_INET6) 1596 continue; 1597 if (noalias) { 1598 if (res->ai_family == AF_INET) { 1599 if (got4) 1600 continue; 1601 got4 = 1; 1602 } else { 1603 if (got6) 1604 continue; 1605 got6 = 1; 1606 } 1607 } 1608 n = calloc(1, sizeof(struct node_host)); 1609 if (n == NULL) 1610 err(1, "host_dns: calloc"); 1611 n->ifname = NULL; 1612 n->af = res->ai_family; 1613 if (res->ai_family == AF_INET) { 1614 memcpy(&n->addr.v.a.addr, 1615 &((struct sockaddr_in *) 1616 res->ai_addr)->sin_addr.s_addr, 1617 sizeof(struct in_addr)); 1618 set_ipmask(n, v4mask); 1619 } else { 1620 memcpy(&n->addr.v.a.addr, 1621 &((struct sockaddr_in6 *) 1622 res->ai_addr)->sin6_addr.s6_addr, 1623 sizeof(struct in6_addr)); 1624 n->ifindex = 1625 ((struct sockaddr_in6 *) 1626 res->ai_addr)->sin6_scope_id; 1627 set_ipmask(n, v6mask); 1628 } 1629 n->next = NULL; 1630 n->tail = n; 1631 if (h == NULL) 1632 h = n; 1633 else { 1634 h->tail->next = n; 1635 h->tail = n; 1636 } 1637 } 1638 freeaddrinfo(res0); 1639 free(ps); 1640 1641 return (h); 1642 } 1643 1644 /* 1645 * convert a hostname to a list of addresses and put them in the given buffer. 1646 * test: 1647 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1648 */ 1649 int 1650 append_addr(struct pfr_buffer *b, char *s, int test) 1651 { 1652 char *r; 1653 struct node_host *h, *n; 1654 int rv, not = 0; 1655 1656 for (r = s; *r == '!'; r++) 1657 not = !not; 1658 if ((n = host(r)) == NULL) { 1659 errno = 0; 1660 return (-1); 1661 } 1662 rv = append_addr_host(b, n, test, not); 1663 do { 1664 h = n; 1665 n = n->next; 1666 free(h); 1667 } while (n != NULL); 1668 return (rv); 1669 } 1670 1671 /* 1672 * same as previous function, but with a pre-parsed input and the ability 1673 * to "negate" the result. Does not free the node_host list. 1674 * not: 1675 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1676 */ 1677 int 1678 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1679 { 1680 int bits; 1681 struct pfr_addr addr; 1682 1683 do { 1684 bzero(&addr, sizeof(addr)); 1685 addr.pfra_not = n->not ^ not; 1686 addr.pfra_af = n->af; 1687 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1688 switch (n->af) { 1689 case AF_INET: 1690 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1691 bits = 32; 1692 break; 1693 case AF_INET6: 1694 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1695 sizeof(struct in6_addr)); 1696 bits = 128; 1697 break; 1698 default: 1699 errno = EINVAL; 1700 return (-1); 1701 } 1702 if ((test && (not || addr.pfra_net != bits)) || 1703 addr.pfra_net > bits) { 1704 errno = EINVAL; 1705 return (-1); 1706 } 1707 if (pfr_buf_add(b, &addr)) 1708 return (-1); 1709 } while ((n = n->next) != NULL); 1710 1711 return (0); 1712 } 1713 1714 int 1715 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1716 { 1717 struct pfioc_trans_e trans; 1718 1719 bzero(&trans, sizeof(trans)); 1720 trans.rs_num = rs_num; 1721 if (strlcpy(trans.anchor, anchor, 1722 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1723 errx(1, "pfctl_add_trans: strlcpy"); 1724 1725 return pfr_buf_add(buf, &trans); 1726 } 1727 1728 u_int32_t 1729 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1730 { 1731 struct pfioc_trans_e *p; 1732 1733 PFRB_FOREACH(p, buf) 1734 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1735 return (p->ticket); 1736 errx(1, "pfctl_get_ticket: assertion failed"); 1737 } 1738 1739 int 1740 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1741 { 1742 struct pfioc_trans trans; 1743 1744 bzero(&trans, sizeof(trans)); 1745 trans.size = buf->pfrb_size - from; 1746 trans.esize = sizeof(struct pfioc_trans_e); 1747 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1748 return ioctl(dev, cmd, &trans); 1749 } 1750