1 /* $OpenBSD: pfctl_parser.c,v 1.244 2009/04/15 05:07:02 david 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->rule_flag & PFRULE_FRAGMENT) 965 printf(" fragment"); 966 967 if (r->scrub_flags >= PFSTATE_NODF || r->min_ttl || r->max_mss) { 968 printf(" scrub ("); 969 opts = 1; 970 if (r->scrub_flags & PFSTATE_NODF) { 971 printf("no-df"); 972 opts = 0; 973 } 974 if (r->scrub_flags & PFSTATE_RANDOMID) { 975 if (!opts) 976 printf(" "); 977 printf("random-id"); 978 opts = 0; 979 } 980 if (r->min_ttl) { 981 if (!opts) 982 printf(" "); 983 printf("min-ttl %d", r->min_ttl); 984 opts = 0; 985 } 986 if (r->scrub_flags & PFSTATE_SETTOS) { 987 if (!opts) 988 printf(" "); 989 printf("set-tos 0x%2.2x", r->set_tos); 990 opts = 0; 991 } 992 if (r->scrub_flags & PFSTATE_SCRUB_TCP) { 993 if (!opts) 994 printf(" "); 995 printf("reassemble tcp"); 996 opts = 0; 997 } 998 if (r->max_mss) { 999 if (!opts) 1000 printf(" "); 1001 printf("max-mss %d", r->max_mss); 1002 opts = 0; 1003 } 1004 printf(")"); 1005 } 1006 1007 if (r->allow_opts) 1008 printf(" allow-opts"); 1009 if (r->label[0]) 1010 printf(" label \"%s\"", r->label); 1011 if (r->qname[0] && r->pqname[0]) 1012 printf(" queue(%s, %s)", r->qname, r->pqname); 1013 else if (r->qname[0]) 1014 printf(" queue %s", r->qname); 1015 if (r->tagname[0]) 1016 printf(" tag %s", r->tagname); 1017 if (r->match_tagname[0]) { 1018 if (r->match_tag_not) 1019 printf(" !"); 1020 printf(" tagged %s", r->match_tagname); 1021 } 1022 if (r->rtableid != -1) 1023 printf(" rtable %u", r->rtableid); 1024 if (r->divert.port) { 1025 if (PF_AZERO(&r->divert.addr, r->af)) { 1026 printf(" divert-reply"); 1027 } else { 1028 /* XXX cut&paste from print_addr */ 1029 char buf[48]; 1030 1031 printf(" divert-to "); 1032 if (inet_ntop(r->af, &r->divert.addr, buf, 1033 sizeof(buf)) == NULL) 1034 printf("?"); 1035 else 1036 printf("%s", buf); 1037 printf(" port %u", ntohs(r->divert.port)); 1038 } 1039 } 1040 if (!anchor_call[0] && (r->action == PF_NAT || 1041 r->action == PF_BINAT || r->action == PF_RDR)) { 1042 printf(" -> "); 1043 print_pool(&r->rpool, r->rpool.proxy_port[0], 1044 r->rpool.proxy_port[1], r->af, r->action); 1045 } 1046 } 1047 1048 void 1049 print_tabledef(const char *name, int flags, int addrs, 1050 struct node_tinithead *nodes) 1051 { 1052 struct node_tinit *ti, *nti; 1053 struct node_host *h; 1054 1055 printf("table <%s>", name); 1056 if (flags & PFR_TFLAG_CONST) 1057 printf(" const"); 1058 if (flags & PFR_TFLAG_PERSIST) 1059 printf(" persist"); 1060 if (flags & PFR_TFLAG_COUNTERS) 1061 printf(" counters"); 1062 SIMPLEQ_FOREACH(ti, nodes, entries) { 1063 if (ti->file) { 1064 printf(" file \"%s\"", ti->file); 1065 continue; 1066 } 1067 printf(" {"); 1068 for (;;) { 1069 for (h = ti->host; h != NULL; h = h->next) { 1070 printf(h->not ? " !" : " "); 1071 print_addr(&h->addr, h->af, 0); 1072 } 1073 nti = SIMPLEQ_NEXT(ti, entries); 1074 if (nti != NULL && nti->file == NULL) 1075 ti = nti; /* merge lists */ 1076 else 1077 break; 1078 } 1079 printf(" }"); 1080 } 1081 if (addrs && SIMPLEQ_EMPTY(nodes)) 1082 printf(" { }"); 1083 printf("\n"); 1084 } 1085 1086 int 1087 parse_flags(char *s) 1088 { 1089 char *p, *q; 1090 u_int8_t f = 0; 1091 1092 for (p = s; *p; p++) { 1093 if ((q = strchr(tcpflags, *p)) == NULL) 1094 return -1; 1095 else 1096 f |= 1 << (q - tcpflags); 1097 } 1098 return (f ? f : PF_TH_ALL); 1099 } 1100 1101 void 1102 set_ipmask(struct node_host *h, u_int8_t b) 1103 { 1104 struct pf_addr *m, *n; 1105 int i, j = 0; 1106 1107 m = &h->addr.v.a.mask; 1108 memset(m, 0, sizeof(*m)); 1109 1110 while (b >= 32) { 1111 m->addr32[j++] = 0xffffffff; 1112 b -= 32; 1113 } 1114 for (i = 31; i > 31-b; --i) 1115 m->addr32[j] |= (1 << i); 1116 if (b) 1117 m->addr32[j] = htonl(m->addr32[j]); 1118 1119 /* Mask off bits of the address that will never be used. */ 1120 n = &h->addr.v.a.addr; 1121 if (h->addr.type == PF_ADDR_ADDRMASK) 1122 for (i = 0; i < 4; i++) 1123 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1124 } 1125 1126 int 1127 check_netmask(struct node_host *h, sa_family_t af) 1128 { 1129 struct node_host *n = NULL; 1130 struct pf_addr *m; 1131 1132 for (n = h; n != NULL; n = n->next) { 1133 if (h->addr.type == PF_ADDR_TABLE) 1134 continue; 1135 m = &h->addr.v.a.mask; 1136 /* fix up netmask for dynaddr */ 1137 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1138 unmask(m, AF_INET6) > 32) 1139 set_ipmask(n, 32); 1140 /* netmasks > 32 bit are invalid on v4 */ 1141 if (af == AF_INET && 1142 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1143 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1144 unmask(m, AF_INET6)); 1145 return (1); 1146 } 1147 } 1148 return (0); 1149 } 1150 1151 /* interface lookup routines */ 1152 1153 struct node_host *iftab; 1154 1155 void 1156 ifa_load(void) 1157 { 1158 struct ifaddrs *ifap, *ifa; 1159 struct node_host *n = NULL, *h = NULL; 1160 1161 if (getifaddrs(&ifap) < 0) 1162 err(1, "getifaddrs"); 1163 1164 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1165 if (!(ifa->ifa_addr->sa_family == AF_INET || 1166 ifa->ifa_addr->sa_family == AF_INET6 || 1167 ifa->ifa_addr->sa_family == AF_LINK)) 1168 continue; 1169 n = calloc(1, sizeof(struct node_host)); 1170 if (n == NULL) 1171 err(1, "address: calloc"); 1172 n->af = ifa->ifa_addr->sa_family; 1173 n->ifa_flags = ifa->ifa_flags; 1174 #ifdef __KAME__ 1175 if (n->af == AF_INET6 && 1176 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1177 ifa->ifa_addr)->sin6_addr) && 1178 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1179 0) { 1180 struct sockaddr_in6 *sin6; 1181 1182 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1183 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1184 sin6->sin6_addr.s6_addr[3]; 1185 sin6->sin6_addr.s6_addr[2] = 0; 1186 sin6->sin6_addr.s6_addr[3] = 0; 1187 } 1188 #endif 1189 n->ifindex = 0; 1190 if (n->af == AF_INET) { 1191 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1192 ifa->ifa_addr)->sin_addr.s_addr, 1193 sizeof(struct in_addr)); 1194 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1195 ifa->ifa_netmask)->sin_addr.s_addr, 1196 sizeof(struct in_addr)); 1197 if (ifa->ifa_broadaddr != NULL) 1198 memcpy(&n->bcast, &((struct sockaddr_in *) 1199 ifa->ifa_broadaddr)->sin_addr.s_addr, 1200 sizeof(struct in_addr)); 1201 if (ifa->ifa_dstaddr != NULL) 1202 memcpy(&n->peer, &((struct sockaddr_in *) 1203 ifa->ifa_dstaddr)->sin_addr.s_addr, 1204 sizeof(struct in_addr)); 1205 } else if (n->af == AF_INET6) { 1206 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1207 ifa->ifa_addr)->sin6_addr.s6_addr, 1208 sizeof(struct in6_addr)); 1209 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1210 ifa->ifa_netmask)->sin6_addr.s6_addr, 1211 sizeof(struct in6_addr)); 1212 if (ifa->ifa_broadaddr != NULL) 1213 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1214 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1215 sizeof(struct in6_addr)); 1216 if (ifa->ifa_dstaddr != NULL) 1217 memcpy(&n->peer, &((struct sockaddr_in6 *) 1218 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1219 sizeof(struct in6_addr)); 1220 n->ifindex = ((struct sockaddr_in6 *) 1221 ifa->ifa_addr)->sin6_scope_id; 1222 } 1223 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1224 err(1, "ifa_load: strdup"); 1225 n->next = NULL; 1226 n->tail = n; 1227 if (h == NULL) 1228 h = n; 1229 else { 1230 h->tail->next = n; 1231 h->tail = n; 1232 } 1233 } 1234 1235 iftab = h; 1236 freeifaddrs(ifap); 1237 } 1238 1239 struct node_host * 1240 ifa_exists(const char *ifa_name) 1241 { 1242 struct node_host *n; 1243 struct ifgroupreq ifgr; 1244 int s; 1245 1246 if (iftab == NULL) 1247 ifa_load(); 1248 1249 /* check wether this is a group */ 1250 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) 1251 err(1, "socket"); 1252 bzero(&ifgr, sizeof(ifgr)); 1253 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1254 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == 0) { 1255 /* fake a node_host */ 1256 if ((n = calloc(1, sizeof(*n))) == NULL) 1257 err(1, "calloc"); 1258 if ((n->ifname = strdup(ifa_name)) == NULL) 1259 err(1, "strdup"); 1260 close(s); 1261 return (n); 1262 } 1263 close(s); 1264 1265 for (n = iftab; n; n = n->next) { 1266 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1267 return (n); 1268 } 1269 1270 return (NULL); 1271 } 1272 1273 struct node_host * 1274 ifa_grouplookup(const char *ifa_name, int flags) 1275 { 1276 struct ifg_req *ifg; 1277 struct ifgroupreq ifgr; 1278 int s, len; 1279 struct node_host *n, *h = NULL; 1280 1281 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) 1282 err(1, "socket"); 1283 bzero(&ifgr, sizeof(ifgr)); 1284 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1285 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) { 1286 close(s); 1287 return (NULL); 1288 } 1289 1290 len = ifgr.ifgr_len; 1291 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1292 err(1, "calloc"); 1293 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1294 err(1, "SIOCGIFGMEMB"); 1295 1296 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1297 ifg++) { 1298 len -= sizeof(struct ifg_req); 1299 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1300 continue; 1301 if (h == NULL) 1302 h = n; 1303 else { 1304 h->tail->next = n; 1305 h->tail = n->tail; 1306 } 1307 } 1308 free(ifgr.ifgr_groups); 1309 close(s); 1310 1311 return (h); 1312 } 1313 1314 struct node_host * 1315 ifa_lookup(const char *ifa_name, int flags) 1316 { 1317 struct node_host *p = NULL, *h = NULL, *n = NULL; 1318 int got4 = 0, got6 = 0; 1319 const char *last_if = NULL; 1320 1321 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1322 return (h); 1323 1324 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1325 ifa_name = NULL; 1326 1327 if (iftab == NULL) 1328 ifa_load(); 1329 1330 for (p = iftab; p; p = p->next) { 1331 if (ifa_skip_if(ifa_name, p)) 1332 continue; 1333 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1334 continue; 1335 if ((flags & PFI_AFLAG_BROADCAST) && 1336 !(p->ifa_flags & IFF_BROADCAST)) 1337 continue; 1338 if ((flags & PFI_AFLAG_PEER) && 1339 !(p->ifa_flags & IFF_POINTOPOINT)) 1340 continue; 1341 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1342 continue; 1343 if (last_if == NULL || strcmp(last_if, p->ifname)) 1344 got4 = got6 = 0; 1345 last_if = p->ifname; 1346 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1347 continue; 1348 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1349 continue; 1350 if (p->af == AF_INET) 1351 got4 = 1; 1352 else 1353 got6 = 1; 1354 n = calloc(1, sizeof(struct node_host)); 1355 if (n == NULL) 1356 err(1, "address: calloc"); 1357 n->af = p->af; 1358 if (flags & PFI_AFLAG_BROADCAST) 1359 memcpy(&n->addr.v.a.addr, &p->bcast, 1360 sizeof(struct pf_addr)); 1361 else if (flags & PFI_AFLAG_PEER) 1362 memcpy(&n->addr.v.a.addr, &p->peer, 1363 sizeof(struct pf_addr)); 1364 else 1365 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1366 sizeof(struct pf_addr)); 1367 if (flags & PFI_AFLAG_NETWORK) 1368 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1369 else { 1370 if (n->af == AF_INET) { 1371 if (p->ifa_flags & IFF_LOOPBACK && 1372 p->ifa_flags & IFF_LINK1) 1373 memcpy(&n->addr.v.a.mask, 1374 &p->addr.v.a.mask, 1375 sizeof(struct pf_addr)); 1376 else 1377 set_ipmask(n, 32); 1378 } else 1379 set_ipmask(n, 128); 1380 } 1381 n->ifindex = p->ifindex; 1382 1383 n->next = NULL; 1384 n->tail = n; 1385 if (h == NULL) 1386 h = n; 1387 else { 1388 h->tail->next = n; 1389 h->tail = n; 1390 } 1391 } 1392 return (h); 1393 } 1394 1395 int 1396 ifa_skip_if(const char *filter, struct node_host *p) 1397 { 1398 int n; 1399 1400 if (p->af != AF_INET && p->af != AF_INET6) 1401 return (1); 1402 if (filter == NULL || !*filter) 1403 return (0); 1404 if (!strcmp(p->ifname, filter)) 1405 return (0); /* exact match */ 1406 n = strlen(filter); 1407 if (n < 1 || n >= IFNAMSIZ) 1408 return (1); /* sanity check */ 1409 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1410 return (1); /* only do exact match in that case */ 1411 if (strncmp(p->ifname, filter, n)) 1412 return (1); /* prefix doesn't match */ 1413 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1414 } 1415 1416 1417 struct node_host * 1418 host(const char *s) 1419 { 1420 struct node_host *h = NULL; 1421 int mask, v4mask, v6mask, cont = 1; 1422 char *p, *q, *ps; 1423 1424 if ((p = strrchr(s, '/')) != NULL) { 1425 mask = strtol(p+1, &q, 0); 1426 if (!q || *q || mask > 128 || q == (p+1)) { 1427 fprintf(stderr, "invalid netmask '%s'\n", p); 1428 return (NULL); 1429 } 1430 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1431 err(1, "host: malloc"); 1432 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1433 v4mask = v6mask = mask; 1434 } else { 1435 if ((ps = strdup(s)) == NULL) 1436 err(1, "host: strdup"); 1437 v4mask = 32; 1438 v6mask = 128; 1439 mask = -1; 1440 } 1441 1442 /* interface with this name exists? */ 1443 if (cont && (h = host_if(ps, mask)) != NULL) 1444 cont = 0; 1445 1446 /* IPv4 address? */ 1447 if (cont && (h = host_v4(s, mask)) != NULL) 1448 cont = 0; 1449 1450 /* IPv6 address? */ 1451 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1452 cont = 0; 1453 1454 /* dns lookup */ 1455 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1456 cont = 0; 1457 free(ps); 1458 1459 if (h == NULL || cont == 1) { 1460 fprintf(stderr, "no IP address found for %s\n", s); 1461 return (NULL); 1462 } 1463 return (h); 1464 } 1465 1466 struct node_host * 1467 host_if(const char *s, int mask) 1468 { 1469 struct node_host *n, *h = NULL; 1470 char *p, *ps; 1471 int flags = 0; 1472 1473 if ((ps = strdup(s)) == NULL) 1474 err(1, "host_if: strdup"); 1475 while ((p = strrchr(ps, ':')) != NULL) { 1476 if (!strcmp(p+1, "network")) 1477 flags |= PFI_AFLAG_NETWORK; 1478 else if (!strcmp(p+1, "broadcast")) 1479 flags |= PFI_AFLAG_BROADCAST; 1480 else if (!strcmp(p+1, "peer")) 1481 flags |= PFI_AFLAG_PEER; 1482 else if (!strcmp(p+1, "0")) 1483 flags |= PFI_AFLAG_NOALIAS; 1484 else { 1485 free(ps); 1486 return (NULL); 1487 } 1488 *p = '\0'; 1489 } 1490 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1491 fprintf(stderr, "illegal combination of interface modifiers\n"); 1492 free(ps); 1493 return (NULL); 1494 } 1495 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1496 fprintf(stderr, "network or broadcast lookup, but " 1497 "extra netmask given\n"); 1498 free(ps); 1499 return (NULL); 1500 } 1501 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1502 /* interface with this name exists */ 1503 h = ifa_lookup(ps, flags); 1504 for (n = h; n != NULL && mask > -1; n = n->next) 1505 set_ipmask(n, mask); 1506 } 1507 1508 free(ps); 1509 return (h); 1510 } 1511 1512 struct node_host * 1513 host_v4(const char *s, int mask) 1514 { 1515 struct node_host *h = NULL; 1516 struct in_addr ina; 1517 int bits = 32; 1518 1519 memset(&ina, 0, sizeof(struct in_addr)); 1520 if (strrchr(s, '/') != NULL) { 1521 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1522 return (NULL); 1523 } else { 1524 if (inet_pton(AF_INET, s, &ina) != 1) 1525 return (NULL); 1526 } 1527 1528 h = calloc(1, sizeof(struct node_host)); 1529 if (h == NULL) 1530 err(1, "address: calloc"); 1531 h->ifname = NULL; 1532 h->af = AF_INET; 1533 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1534 set_ipmask(h, bits); 1535 h->next = NULL; 1536 h->tail = h; 1537 1538 return (h); 1539 } 1540 1541 struct node_host * 1542 host_v6(const char *s, int mask) 1543 { 1544 struct addrinfo hints, *res; 1545 struct node_host *h = NULL; 1546 1547 memset(&hints, 0, sizeof(hints)); 1548 hints.ai_family = AF_INET6; 1549 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1550 hints.ai_flags = AI_NUMERICHOST; 1551 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1552 h = calloc(1, sizeof(struct node_host)); 1553 if (h == NULL) 1554 err(1, "address: calloc"); 1555 h->ifname = NULL; 1556 h->af = AF_INET6; 1557 memcpy(&h->addr.v.a.addr, 1558 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1559 sizeof(h->addr.v.a.addr)); 1560 h->ifindex = 1561 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1562 set_ipmask(h, mask); 1563 freeaddrinfo(res); 1564 h->next = NULL; 1565 h->tail = h; 1566 } 1567 1568 return (h); 1569 } 1570 1571 struct node_host * 1572 host_dns(const char *s, int v4mask, int v6mask) 1573 { 1574 struct addrinfo hints, *res0, *res; 1575 struct node_host *n, *h = NULL; 1576 int error, noalias = 0; 1577 int got4 = 0, got6 = 0; 1578 char *p, *ps; 1579 1580 if ((ps = strdup(s)) == NULL) 1581 err(1, "host_dns: strdup"); 1582 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1583 noalias = 1; 1584 *p = '\0'; 1585 } 1586 memset(&hints, 0, sizeof(hints)); 1587 hints.ai_family = PF_UNSPEC; 1588 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1589 error = getaddrinfo(ps, NULL, &hints, &res0); 1590 if (error) { 1591 free(ps); 1592 return (h); 1593 } 1594 1595 for (res = res0; res; res = res->ai_next) { 1596 if (res->ai_family != AF_INET && 1597 res->ai_family != AF_INET6) 1598 continue; 1599 if (noalias) { 1600 if (res->ai_family == AF_INET) { 1601 if (got4) 1602 continue; 1603 got4 = 1; 1604 } else { 1605 if (got6) 1606 continue; 1607 got6 = 1; 1608 } 1609 } 1610 n = calloc(1, sizeof(struct node_host)); 1611 if (n == NULL) 1612 err(1, "host_dns: calloc"); 1613 n->ifname = NULL; 1614 n->af = res->ai_family; 1615 if (res->ai_family == AF_INET) { 1616 memcpy(&n->addr.v.a.addr, 1617 &((struct sockaddr_in *) 1618 res->ai_addr)->sin_addr.s_addr, 1619 sizeof(struct in_addr)); 1620 set_ipmask(n, v4mask); 1621 } else { 1622 memcpy(&n->addr.v.a.addr, 1623 &((struct sockaddr_in6 *) 1624 res->ai_addr)->sin6_addr.s6_addr, 1625 sizeof(struct in6_addr)); 1626 n->ifindex = 1627 ((struct sockaddr_in6 *) 1628 res->ai_addr)->sin6_scope_id; 1629 set_ipmask(n, v6mask); 1630 } 1631 n->next = NULL; 1632 n->tail = n; 1633 if (h == NULL) 1634 h = n; 1635 else { 1636 h->tail->next = n; 1637 h->tail = n; 1638 } 1639 } 1640 freeaddrinfo(res0); 1641 free(ps); 1642 1643 return (h); 1644 } 1645 1646 /* 1647 * convert a hostname to a list of addresses and put them in the given buffer. 1648 * test: 1649 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1650 */ 1651 int 1652 append_addr(struct pfr_buffer *b, char *s, int test) 1653 { 1654 char *r; 1655 struct node_host *h, *n; 1656 int rv, not = 0; 1657 1658 for (r = s; *r == '!'; r++) 1659 not = !not; 1660 if ((n = host(r)) == NULL) { 1661 errno = 0; 1662 return (-1); 1663 } 1664 rv = append_addr_host(b, n, test, not); 1665 do { 1666 h = n; 1667 n = n->next; 1668 free(h); 1669 } while (n != NULL); 1670 return (rv); 1671 } 1672 1673 /* 1674 * same as previous function, but with a pre-parsed input and the ability 1675 * to "negate" the result. Does not free the node_host list. 1676 * not: 1677 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1678 */ 1679 int 1680 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1681 { 1682 int bits; 1683 struct pfr_addr addr; 1684 1685 do { 1686 bzero(&addr, sizeof(addr)); 1687 addr.pfra_not = n->not ^ not; 1688 addr.pfra_af = n->af; 1689 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1690 switch (n->af) { 1691 case AF_INET: 1692 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1693 bits = 32; 1694 break; 1695 case AF_INET6: 1696 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1697 sizeof(struct in6_addr)); 1698 bits = 128; 1699 break; 1700 default: 1701 errno = EINVAL; 1702 return (-1); 1703 } 1704 if ((test && (not || addr.pfra_net != bits)) || 1705 addr.pfra_net > bits) { 1706 errno = EINVAL; 1707 return (-1); 1708 } 1709 if (pfr_buf_add(b, &addr)) 1710 return (-1); 1711 } while ((n = n->next) != NULL); 1712 1713 return (0); 1714 } 1715 1716 int 1717 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1718 { 1719 struct pfioc_trans_e trans; 1720 1721 bzero(&trans, sizeof(trans)); 1722 trans.rs_num = rs_num; 1723 if (strlcpy(trans.anchor, anchor, 1724 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1725 errx(1, "pfctl_add_trans: strlcpy"); 1726 1727 return pfr_buf_add(buf, &trans); 1728 } 1729 1730 u_int32_t 1731 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1732 { 1733 struct pfioc_trans_e *p; 1734 1735 PFRB_FOREACH(p, buf) 1736 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1737 return (p->ticket); 1738 errx(1, "pfctl_get_ticket: assertion failed"); 1739 } 1740 1741 int 1742 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1743 { 1744 struct pfioc_trans trans; 1745 1746 bzero(&trans, sizeof(trans)); 1747 trans.size = buf->pfrb_size - from; 1748 trans.esize = sizeof(struct pfioc_trans_e); 1749 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1750 return ioctl(dev, cmd, &trans); 1751 } 1752