1 /* $OpenBSD: pfctl_parser.c,v 1.240 2008/06/10 20:55:02 mcbride Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Daniel Hartmeier 5 * Copyright (c) 2002,2003 Henning Brauer 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * - Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * - Redistributions in binary form must reproduce the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer in the documentation and/or other materials provided 17 * with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include <sys/types.h> 38 #include <sys/ioctl.h> 39 #include <sys/socket.h> 40 #include <sys/param.h> 41 #include <sys/proc.h> 42 #include <net/if.h> 43 #include <netinet/in.h> 44 #include <netinet/in_systm.h> 45 #include <netinet/ip.h> 46 #include <netinet/ip_icmp.h> 47 #include <netinet/icmp6.h> 48 #include <net/pfvar.h> 49 #include <arpa/inet.h> 50 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <ctype.h> 55 #include <netdb.h> 56 #include <stdarg.h> 57 #include <errno.h> 58 #include <err.h> 59 #include <ifaddrs.h> 60 #include <unistd.h> 61 62 #include "pfctl_parser.h" 63 #include "pfctl.h" 64 65 void print_op (u_int8_t, const char *, const char *); 66 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int); 67 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned); 68 void print_flags (u_int8_t); 69 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 70 struct pf_rule_addr *, u_int8_t, u_int8_t, int, int); 71 int ifa_skip_if(const char *filter, struct node_host *p); 72 73 struct node_host *ifa_grouplookup(const char *, int); 74 struct node_host *host_if(const char *, int); 75 struct node_host *host_v4(const char *, int); 76 struct node_host *host_v6(const char *, int); 77 struct node_host *host_dns(const char *, int, int); 78 79 const char *tcpflags = "FSRPAUEW"; 80 81 static const struct icmptypeent icmp_type[] = { 82 { "echoreq", ICMP_ECHO }, 83 { "echorep", ICMP_ECHOREPLY }, 84 { "unreach", ICMP_UNREACH }, 85 { "squench", ICMP_SOURCEQUENCH }, 86 { "redir", ICMP_REDIRECT }, 87 { "althost", ICMP_ALTHOSTADDR }, 88 { "routeradv", ICMP_ROUTERADVERT }, 89 { "routersol", ICMP_ROUTERSOLICIT }, 90 { "timex", ICMP_TIMXCEED }, 91 { "paramprob", ICMP_PARAMPROB }, 92 { "timereq", ICMP_TSTAMP }, 93 { "timerep", ICMP_TSTAMPREPLY }, 94 { "inforeq", ICMP_IREQ }, 95 { "inforep", ICMP_IREQREPLY }, 96 { "maskreq", ICMP_MASKREQ }, 97 { "maskrep", ICMP_MASKREPLY }, 98 { "trace", ICMP_TRACEROUTE }, 99 { "dataconv", ICMP_DATACONVERR }, 100 { "mobredir", ICMP_MOBILE_REDIRECT }, 101 { "ipv6-where", ICMP_IPV6_WHEREAREYOU }, 102 { "ipv6-here", ICMP_IPV6_IAMHERE }, 103 { "mobregreq", ICMP_MOBILE_REGREQUEST }, 104 { "mobregrep", ICMP_MOBILE_REGREPLY }, 105 { "skip", ICMP_SKIP }, 106 { "photuris", ICMP_PHOTURIS } 107 }; 108 109 static const struct icmptypeent icmp6_type[] = { 110 { "unreach", ICMP6_DST_UNREACH }, 111 { "toobig", ICMP6_PACKET_TOO_BIG }, 112 { "timex", ICMP6_TIME_EXCEEDED }, 113 { "paramprob", ICMP6_PARAM_PROB }, 114 { "echoreq", ICMP6_ECHO_REQUEST }, 115 { "echorep", ICMP6_ECHO_REPLY }, 116 { "groupqry", ICMP6_MEMBERSHIP_QUERY }, 117 { "listqry", MLD_LISTENER_QUERY }, 118 { "grouprep", ICMP6_MEMBERSHIP_REPORT }, 119 { "listenrep", MLD_LISTENER_REPORT }, 120 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION }, 121 { "listendone", MLD_LISTENER_DONE }, 122 { "routersol", ND_ROUTER_SOLICIT }, 123 { "routeradv", ND_ROUTER_ADVERT }, 124 { "neighbrsol", ND_NEIGHBOR_SOLICIT }, 125 { "neighbradv", ND_NEIGHBOR_ADVERT }, 126 { "redir", ND_REDIRECT }, 127 { "routrrenum", ICMP6_ROUTER_RENUMBERING }, 128 { "wrureq", ICMP6_WRUREQUEST }, 129 { "wrurep", ICMP6_WRUREPLY }, 130 { "fqdnreq", ICMP6_FQDN_QUERY }, 131 { "fqdnrep", ICMP6_FQDN_REPLY }, 132 { "niqry", ICMP6_NI_QUERY }, 133 { "nirep", ICMP6_NI_REPLY }, 134 { "mtraceresp", MLD_MTRACE_RESP }, 135 { "mtrace", MLD_MTRACE } 136 }; 137 138 static const struct icmpcodeent icmp_code[] = { 139 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET }, 140 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST }, 141 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL }, 142 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT }, 143 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG }, 144 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL }, 145 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN }, 146 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN }, 147 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED }, 148 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB }, 149 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB }, 150 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET }, 151 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST }, 152 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB }, 153 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE }, 154 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF }, 155 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET }, 156 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST }, 157 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET }, 158 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST }, 159 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL }, 160 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON }, 161 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS }, 162 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS }, 163 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR }, 164 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT }, 165 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH }, 166 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX }, 167 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED }, 168 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED } 169 }; 170 171 static const struct icmpcodeent icmp6_code[] = { 172 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN }, 173 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE }, 174 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR }, 175 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE }, 176 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR }, 177 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT }, 178 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT }, 179 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY }, 180 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER }, 181 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER }, 182 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK }, 183 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER } 184 }; 185 186 const struct pf_timeout pf_timeouts[] = { 187 { "tcp.first", PFTM_TCP_FIRST_PACKET }, 188 { "tcp.opening", PFTM_TCP_OPENING }, 189 { "tcp.established", PFTM_TCP_ESTABLISHED }, 190 { "tcp.closing", PFTM_TCP_CLOSING }, 191 { "tcp.finwait", PFTM_TCP_FIN_WAIT }, 192 { "tcp.closed", PFTM_TCP_CLOSED }, 193 { "tcp.tsdiff", PFTM_TS_DIFF }, 194 { "udp.first", PFTM_UDP_FIRST_PACKET }, 195 { "udp.single", PFTM_UDP_SINGLE }, 196 { "udp.multiple", PFTM_UDP_MULTIPLE }, 197 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 198 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 199 { "other.first", PFTM_OTHER_FIRST_PACKET }, 200 { "other.single", PFTM_OTHER_SINGLE }, 201 { "other.multiple", PFTM_OTHER_MULTIPLE }, 202 { "frag", PFTM_FRAG }, 203 { "interval", PFTM_INTERVAL }, 204 { "adaptive.start", PFTM_ADAPTIVE_START }, 205 { "adaptive.end", PFTM_ADAPTIVE_END }, 206 { "src.track", PFTM_SRC_NODE }, 207 { NULL, 0 } 208 }; 209 210 const struct icmptypeent * 211 geticmptypebynumber(u_int8_t type, sa_family_t af) 212 { 213 unsigned int i; 214 215 if (af != AF_INET6) { 216 for (i=0; i < nitems(icmp_type); i++) { 217 if (type == icmp_type[i].type) 218 return (&icmp_type[i]); 219 } 220 } else { 221 for (i=0; i < nitems(icmp6_type); i++) { 222 if (type == icmp6_type[i].type) 223 return (&icmp6_type[i]); 224 } 225 } 226 return (NULL); 227 } 228 229 const struct icmptypeent * 230 geticmptypebyname(char *w, sa_family_t af) 231 { 232 unsigned int i; 233 234 if (af != AF_INET6) { 235 for (i=0; i < nitems(icmp_type); i++) { 236 if (!strcmp(w, icmp_type[i].name)) 237 return (&icmp_type[i]); 238 } 239 } else { 240 for (i=0; i < nitems(icmp6_type); i++) { 241 if (!strcmp(w, icmp6_type[i].name)) 242 return (&icmp6_type[i]); 243 } 244 } 245 return (NULL); 246 } 247 248 const struct icmpcodeent * 249 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 250 { 251 unsigned int i; 252 253 if (af != AF_INET6) { 254 for (i=0; i < nitems(icmp_code); i++) { 255 if (type == icmp_code[i].type && 256 code == icmp_code[i].code) 257 return (&icmp_code[i]); 258 } 259 } else { 260 for (i=0; i < nitems(icmp6_code); i++) { 261 if (type == icmp6_code[i].type && 262 code == icmp6_code[i].code) 263 return (&icmp6_code[i]); 264 } 265 } 266 return (NULL); 267 } 268 269 const struct icmpcodeent * 270 geticmpcodebyname(u_long type, char *w, sa_family_t af) 271 { 272 unsigned int i; 273 274 if (af != AF_INET6) { 275 for (i=0; i < nitems(icmp_code); i++) { 276 if (type == icmp_code[i].type && 277 !strcmp(w, icmp_code[i].name)) 278 return (&icmp_code[i]); 279 } 280 } else { 281 for (i=0; i < nitems(icmp6_code); i++) { 282 if (type == icmp6_code[i].type && 283 !strcmp(w, icmp6_code[i].name)) 284 return (&icmp6_code[i]); 285 } 286 } 287 return (NULL); 288 } 289 290 void 291 print_op(u_int8_t op, const char *a1, const char *a2) 292 { 293 if (op == PF_OP_IRG) 294 printf(" %s >< %s", a1, a2); 295 else if (op == PF_OP_XRG) 296 printf(" %s <> %s", a1, a2); 297 else if (op == PF_OP_EQ) 298 printf(" = %s", a1); 299 else if (op == PF_OP_NE) 300 printf(" != %s", a1); 301 else if (op == PF_OP_LT) 302 printf(" < %s", a1); 303 else if (op == PF_OP_LE) 304 printf(" <= %s", a1); 305 else if (op == PF_OP_GT) 306 printf(" > %s", a1); 307 else if (op == PF_OP_GE) 308 printf(" >= %s", a1); 309 else if (op == PF_OP_RRG) 310 printf(" %s:%s", a1, a2); 311 } 312 313 void 314 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric) 315 { 316 char a1[6], a2[6]; 317 struct servent *s; 318 319 if (!numeric) 320 s = getservbyport(p1, proto); 321 else 322 s = NULL; 323 p1 = ntohs(p1); 324 p2 = ntohs(p2); 325 snprintf(a1, sizeof(a1), "%u", p1); 326 snprintf(a2, sizeof(a2), "%u", p2); 327 printf(" port"); 328 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 329 print_op(op, s->s_name, a2); 330 else 331 print_op(op, a1, a2); 332 } 333 334 void 335 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 336 { 337 char a1[11], a2[11]; 338 339 snprintf(a1, sizeof(a1), "%u", u1); 340 snprintf(a2, sizeof(a2), "%u", u2); 341 printf(" %s", t); 342 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 343 print_op(op, "unknown", a2); 344 else 345 print_op(op, a1, a2); 346 } 347 348 void 349 print_flags(u_int8_t f) 350 { 351 int i; 352 353 for (i = 0; tcpflags[i]; ++i) 354 if (f & (1 << i)) 355 printf("%c", tcpflags[i]); 356 } 357 358 void 359 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 360 sa_family_t af, u_int8_t proto, int verbose, int numeric) 361 { 362 char buf[PF_OSFP_LEN*3]; 363 if (src->addr.type == PF_ADDR_ADDRMASK && 364 dst->addr.type == PF_ADDR_ADDRMASK && 365 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 366 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 367 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 368 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 369 !src->neg && !dst->neg && 370 !src->port_op && !dst->port_op && 371 osfp == PF_OSFP_ANY) 372 printf(" all"); 373 else { 374 printf(" from "); 375 if (src->neg) 376 printf("! "); 377 print_addr(&src->addr, af, verbose); 378 if (src->port_op) 379 print_port(src->port_op, src->port[0], 380 src->port[1], 381 proto == IPPROTO_TCP ? "tcp" : "udp", 382 numeric); 383 if (osfp != PF_OSFP_ANY) 384 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 385 sizeof(buf))); 386 387 printf(" to "); 388 if (dst->neg) 389 printf("! "); 390 print_addr(&dst->addr, af, verbose); 391 if (dst->port_op) 392 print_port(dst->port_op, dst->port[0], 393 dst->port[1], 394 proto == IPPROTO_TCP ? "tcp" : "udp", 395 numeric); 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 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 417 printf("%s", pooladdr->ifname); 418 else { 419 printf("(%s ", pooladdr->ifname); 420 print_addr(&pooladdr->addr, af, 0); 421 printf(")"); 422 } 423 break; 424 default: 425 break; 426 } 427 if (TAILQ_NEXT(pooladdr, entries) != NULL) 428 printf(", "); 429 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 430 printf(" }"); 431 } 432 switch (id) { 433 case PF_NAT: 434 if ((p1 != PF_NAT_PROXY_PORT_LOW || 435 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 436 if (p1 == p2) 437 printf(" port %u", p1); 438 else 439 printf(" port %u:%u", p1, p2); 440 } 441 break; 442 case PF_RDR: 443 if (p1) { 444 printf(" port %u", p1); 445 if (p2 && (p2 != p1)) 446 printf(":%u", p2); 447 } 448 break; 449 default: 450 break; 451 } 452 switch (pool->opts & PF_POOL_TYPEMASK) { 453 case PF_POOL_NONE: 454 break; 455 case PF_POOL_BITMASK: 456 printf(" bitmask"); 457 break; 458 case PF_POOL_RANDOM: 459 printf(" random"); 460 break; 461 case PF_POOL_SRCHASH: 462 printf(" source-hash 0x%08x%08x%08x%08x", 463 pool->key.key32[0], pool->key.key32[1], 464 pool->key.key32[2], pool->key.key32[3]); 465 break; 466 case PF_POOL_ROUNDROBIN: 467 printf(" round-robin"); 468 break; 469 } 470 if (pool->opts & PF_POOL_STICKYADDR) 471 printf(" sticky-address"); 472 if (id == PF_NAT && p1 == 0 && p2 == 0) 473 printf(" static-port"); 474 } 475 476 const char *pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 477 const char *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 478 const char *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 479 const char *pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 480 481 void 482 print_status(struct pf_status *s, int opts) 483 { 484 char statline[80], *running; 485 time_t runtime; 486 int i; 487 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 488 static const char hex[] = "0123456789abcdef"; 489 490 runtime = time(NULL) - s->since; 491 running = s->running ? "Enabled" : "Disabled"; 492 493 if (s->since) { 494 unsigned int sec, min, hrs, day = runtime; 495 496 sec = day % 60; 497 day /= 60; 498 min = day % 60; 499 day /= 60; 500 hrs = day % 24; 501 day /= 24; 502 snprintf(statline, sizeof(statline), 503 "Status: %s for %u days %.2u:%.2u:%.2u", 504 running, day, hrs, min, sec); 505 } else 506 snprintf(statline, sizeof(statline), "Status: %s", running); 507 printf("%-44s", statline); 508 switch (s->debug) { 509 case PF_DEBUG_NONE: 510 printf("%15s\n\n", "Debug: None"); 511 break; 512 case PF_DEBUG_URGENT: 513 printf("%15s\n\n", "Debug: Urgent"); 514 break; 515 case PF_DEBUG_MISC: 516 printf("%15s\n\n", "Debug: Misc"); 517 break; 518 case PF_DEBUG_NOISY: 519 printf("%15s\n\n", "Debug: Loud"); 520 break; 521 } 522 523 if (opts & PF_OPT_VERBOSE) { 524 printf("Hostid: 0x%08x\n", ntohl(s->hostid)); 525 526 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 527 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 528 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 529 } 530 buf[i + i] = '\0'; 531 printf("Checksum: 0x%s\n\n", buf); 532 } 533 534 if (s->ifname[0] != 0) { 535 printf("Interface Stats for %-16s %5s %16s\n", 536 s->ifname, "IPv4", "IPv6"); 537 printf(" %-25s %14llu %16llu\n", "Bytes In", 538 (unsigned long long)s->bcounters[0][0], 539 (unsigned long long)s->bcounters[1][0]); 540 printf(" %-25s %14llu %16llu\n", "Bytes Out", 541 (unsigned long long)s->bcounters[0][1], 542 (unsigned long long)s->bcounters[1][1]); 543 printf(" Packets In\n"); 544 printf(" %-23s %14llu %16llu\n", "Passed", 545 (unsigned long long)s->pcounters[0][0][PF_PASS], 546 (unsigned long long)s->pcounters[1][0][PF_PASS]); 547 printf(" %-23s %14llu %16llu\n", "Blocked", 548 (unsigned long long)s->pcounters[0][0][PF_DROP], 549 (unsigned long long)s->pcounters[1][0][PF_DROP]); 550 printf(" Packets Out\n"); 551 printf(" %-23s %14llu %16llu\n", "Passed", 552 (unsigned long long)s->pcounters[0][1][PF_PASS], 553 (unsigned long long)s->pcounters[1][1][PF_PASS]); 554 printf(" %-23s %14llu %16llu\n\n", "Blocked", 555 (unsigned long long)s->pcounters[0][1][PF_DROP], 556 (unsigned long long)s->pcounters[1][1][PF_DROP]); 557 } 558 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 559 printf(" %-25s %14u %14s\n", "current entries", s->states, ""); 560 for (i = 0; i < FCNT_MAX; i++) { 561 printf(" %-25s %14llu ", pf_fcounters[i], 562 (unsigned long long)s->fcounters[i]); 563 if (runtime > 0) 564 printf("%14.1f/s\n", 565 (double)s->fcounters[i] / (double)runtime); 566 else 567 printf("%14s\n", ""); 568 } 569 if (opts & PF_OPT_VERBOSE) { 570 printf("Source Tracking Table\n"); 571 printf(" %-25s %14u %14s\n", "current entries", 572 s->src_nodes, ""); 573 for (i = 0; i < SCNT_MAX; i++) { 574 printf(" %-25s %14lld ", pf_scounters[i], 575 #ifdef __FreeBSD__ 576 (long long)s->scounters[i]); 577 #else 578 s->scounters[i]); 579 #endif 580 if (runtime > 0) 581 printf("%14.1f/s\n", 582 (double)s->scounters[i] / (double)runtime); 583 else 584 printf("%14s\n", ""); 585 } 586 } 587 printf("Counters\n"); 588 for (i = 0; i < PFRES_MAX; i++) { 589 printf(" %-25s %14llu ", pf_reasons[i], 590 (unsigned long long)s->counters[i]); 591 if (runtime > 0) 592 printf("%14.1f/s\n", 593 (double)s->counters[i] / (double)runtime); 594 else 595 printf("%14s\n", ""); 596 } 597 if (opts & PF_OPT_VERBOSE) { 598 printf("Limit Counters\n"); 599 for (i = 0; i < LCNT_MAX; i++) { 600 printf(" %-25s %14lld ", pf_lcounters[i], 601 #ifdef __FreeBSD__ 602 (unsigned long long)s->lcounters[i]); 603 #else 604 s->lcounters[i]); 605 #endif 606 if (runtime > 0) 607 printf("%14.1f/s\n", 608 (double)s->lcounters[i] / (double)runtime); 609 else 610 printf("%14s\n", ""); 611 } 612 } 613 } 614 615 void 616 print_src_node(struct pf_src_node *sn, int opts) 617 { 618 struct pf_addr_wrap aw; 619 int min, sec; 620 621 memset(&aw, 0, sizeof(aw)); 622 if (sn->af == AF_INET) 623 aw.v.a.mask.addr32[0] = 0xffffffff; 624 else 625 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 626 627 aw.v.a.addr = sn->addr; 628 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 629 printf(" -> "); 630 aw.v.a.addr = sn->raddr; 631 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 632 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 633 sn->conn, sn->conn_rate.count / 1000, 634 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 635 if (opts & PF_OPT_VERBOSE) { 636 sec = sn->creation % 60; 637 sn->creation /= 60; 638 min = sn->creation % 60; 639 sn->creation /= 60; 640 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 641 if (sn->states == 0) { 642 sec = sn->expire % 60; 643 sn->expire /= 60; 644 min = sn->expire % 60; 645 sn->expire /= 60; 646 printf(", expires in %.2u:%.2u:%.2u", 647 sn->expire, min, sec); 648 } 649 printf(", %llu pkts, %llu bytes", 650 #ifdef __FreeBSD__ 651 (unsigned long long)(sn->packets[0] + sn->packets[1]), 652 (unsigned long long)(sn->bytes[0] + sn->bytes[1])); 653 #else 654 sn->packets[0] + sn->packets[1], 655 sn->bytes[0] + sn->bytes[1]); 656 #endif 657 switch (sn->ruletype) { 658 case PF_NAT: 659 if (sn->rule.nr != -1) 660 printf(", nat rule %u", sn->rule.nr); 661 break; 662 case PF_RDR: 663 if (sn->rule.nr != -1) 664 printf(", rdr rule %u", sn->rule.nr); 665 break; 666 case PF_PASS: 667 if (sn->rule.nr != -1) 668 printf(", filter rule %u", sn->rule.nr); 669 break; 670 } 671 printf("\n"); 672 } 673 } 674 675 void 676 print_rule(struct pf_rule *r, const char *anchor_call, int verbose, int numeric) 677 { 678 static const char *actiontypes[] = { "pass", "block", "scrub", 679 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" }; 680 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 681 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 682 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 683 int i, opts; 684 685 if (verbose) 686 printf("@%d ", r->nr); 687 if (r->action > PF_NORDR) 688 printf("action(%d)", r->action); 689 else if (anchor_call[0]) { 690 if (anchor_call[0] == '_') { 691 printf("%s", anchortypes[r->action]); 692 } else 693 printf("%s \"%s\"", anchortypes[r->action], 694 anchor_call); 695 } else { 696 printf("%s", actiontypes[r->action]); 697 if (r->natpass) 698 printf(" pass"); 699 } 700 if (r->action == PF_DROP) { 701 if (r->rule_flag & PFRULE_RETURN) 702 printf(" return"); 703 else if (r->rule_flag & PFRULE_RETURNRST) { 704 if (!r->return_ttl) 705 printf(" return-rst"); 706 else 707 printf(" return-rst(ttl %d)", r->return_ttl); 708 } else if (r->rule_flag & PFRULE_RETURNICMP) { 709 const struct icmpcodeent *ic, *ic6; 710 711 ic = geticmpcodebynumber(r->return_icmp >> 8, 712 r->return_icmp & 255, AF_INET); 713 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 714 r->return_icmp6 & 255, AF_INET6); 715 716 switch (r->af) { 717 case AF_INET: 718 printf(" return-icmp"); 719 if (ic == NULL) 720 printf("(%u)", r->return_icmp & 255); 721 else 722 printf("(%s)", ic->name); 723 break; 724 case AF_INET6: 725 printf(" return-icmp6"); 726 if (ic6 == NULL) 727 printf("(%u)", r->return_icmp6 & 255); 728 else 729 printf("(%s)", ic6->name); 730 break; 731 default: 732 printf(" return-icmp"); 733 if (ic == NULL) 734 printf("(%u, ", r->return_icmp & 255); 735 else 736 printf("(%s, ", ic->name); 737 if (ic6 == NULL) 738 printf("%u)", r->return_icmp6 & 255); 739 else 740 printf("%s)", ic6->name); 741 break; 742 } 743 } else 744 printf(" drop"); 745 } 746 if (r->direction == PF_IN) 747 printf(" in"); 748 else if (r->direction == PF_OUT) 749 printf(" out"); 750 if (r->log) { 751 printf(" log"); 752 if (r->log & ~PF_LOG || r->logif) { 753 int count = 0; 754 755 printf(" ("); 756 if (r->log & PF_LOG_ALL) 757 printf("%sall", count++ ? ", " : ""); 758 if (r->log & PF_LOG_SOCKET_LOOKUP) 759 printf("%suser", count++ ? ", " : ""); 760 if (r->logif) 761 printf("%sto pflog%u", count++ ? ", " : "", 762 r->logif); 763 printf(")"); 764 } 765 } 766 if (r->quick) 767 printf(" quick"); 768 if (r->ifname[0]) { 769 if (r->ifnot) 770 printf(" on ! %s", r->ifname); 771 else 772 printf(" on %s", r->ifname); 773 } 774 if (r->rt) { 775 if (r->rt == PF_ROUTETO) 776 printf(" route-to"); 777 else if (r->rt == PF_REPLYTO) 778 printf(" reply-to"); 779 else if (r->rt == PF_DUPTO) 780 printf(" dup-to"); 781 else if (r->rt == PF_FASTROUTE) 782 printf(" fastroute"); 783 if (r->rt != PF_FASTROUTE) { 784 printf(" "); 785 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 786 } 787 } 788 if (r->af) { 789 if (r->af == AF_INET) 790 printf(" inet"); 791 else 792 printf(" inet6"); 793 } 794 if (r->proto) { 795 struct protoent *p; 796 797 if ((p = getprotobynumber(r->proto)) != NULL) 798 printf(" proto %s", p->p_name); 799 else 800 printf(" proto %u", r->proto); 801 } 802 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 803 verbose, numeric); 804 if (r->uid.op) 805 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 806 UID_MAX); 807 if (r->gid.op) 808 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 809 GID_MAX); 810 if (r->flags || r->flagset) { 811 printf(" flags "); 812 print_flags(r->flags); 813 printf("/"); 814 print_flags(r->flagset); 815 } else if (r->action == PF_PASS && 816 (!r->proto || r->proto == IPPROTO_TCP) && 817 !(r->rule_flag & PFRULE_FRAGMENT) && 818 !anchor_call[0] && r->keep_state) 819 printf(" flags any"); 820 if (r->type) { 821 const struct icmptypeent *it; 822 823 it = geticmptypebynumber(r->type-1, r->af); 824 if (r->af != AF_INET6) 825 printf(" icmp-type"); 826 else 827 printf(" icmp6-type"); 828 if (it != NULL) 829 printf(" %s", it->name); 830 else 831 printf(" %u", r->type-1); 832 if (r->code) { 833 const struct icmpcodeent *ic; 834 835 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 836 if (ic != NULL) 837 printf(" code %s", ic->name); 838 else 839 printf(" code %u", r->code-1); 840 } 841 } 842 if (r->tos) 843 printf(" tos 0x%2.2x", r->tos); 844 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 845 printf(" no state"); 846 else if (r->keep_state == PF_STATE_NORMAL) 847 printf(" keep state"); 848 else if (r->keep_state == PF_STATE_MODULATE) 849 printf(" modulate state"); 850 else if (r->keep_state == PF_STATE_SYNPROXY) 851 printf(" synproxy state"); 852 if (r->prob) { 853 char buf[20]; 854 855 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 856 for (i = strlen(buf)-1; i > 0; i--) { 857 if (buf[i] == '0') 858 buf[i] = '\0'; 859 else { 860 if (buf[i] == '.') 861 buf[i] = '\0'; 862 break; 863 } 864 } 865 printf(" probability %s%%", buf); 866 } 867 opts = 0; 868 if (r->max_states || r->max_src_nodes || r->max_src_states) 869 opts = 1; 870 if (r->rule_flag & PFRULE_NOSYNC) 871 opts = 1; 872 if (r->rule_flag & PFRULE_SRCTRACK) 873 opts = 1; 874 if (r->rule_flag & PFRULE_IFBOUND) 875 opts = 1; 876 if (r->rule_flag & PFRULE_STATESLOPPY) 877 opts = 1; 878 for (i = 0; !opts && i < PFTM_MAX; ++i) 879 if (r->timeout[i]) 880 opts = 1; 881 if (opts) { 882 printf(" ("); 883 if (r->max_states) { 884 printf("max %u", r->max_states); 885 opts = 0; 886 } 887 if (r->rule_flag & PFRULE_NOSYNC) { 888 if (!opts) 889 printf(", "); 890 printf("no-sync"); 891 opts = 0; 892 } 893 if (r->rule_flag & PFRULE_SRCTRACK) { 894 if (!opts) 895 printf(", "); 896 printf("source-track"); 897 if (r->rule_flag & PFRULE_RULESRCTRACK) 898 printf(" rule"); 899 else 900 printf(" global"); 901 opts = 0; 902 } 903 if (r->max_src_states) { 904 if (!opts) 905 printf(", "); 906 printf("max-src-states %u", r->max_src_states); 907 opts = 0; 908 } 909 if (r->max_src_conn) { 910 if (!opts) 911 printf(", "); 912 printf("max-src-conn %u", r->max_src_conn); 913 opts = 0; 914 } 915 if (r->max_src_conn_rate.limit) { 916 if (!opts) 917 printf(", "); 918 printf("max-src-conn-rate %u/%u", 919 r->max_src_conn_rate.limit, 920 r->max_src_conn_rate.seconds); 921 opts = 0; 922 } 923 if (r->max_src_nodes) { 924 if (!opts) 925 printf(", "); 926 printf("max-src-nodes %u", r->max_src_nodes); 927 opts = 0; 928 } 929 if (r->overload_tblname[0]) { 930 if (!opts) 931 printf(", "); 932 printf("overload <%s>", r->overload_tblname); 933 if (r->flush) 934 printf(" flush"); 935 if (r->flush & PF_FLUSH_GLOBAL) 936 printf(" global"); 937 } 938 if (r->rule_flag & PFRULE_IFBOUND) { 939 if (!opts) 940 printf(", "); 941 printf("if-bound"); 942 opts = 0; 943 } 944 if (r->rule_flag & PFRULE_STATESLOPPY) { 945 if (!opts) 946 printf(", "); 947 printf("sloppy"); 948 opts = 0; 949 } 950 for (i = 0; i < PFTM_MAX; ++i) 951 if (r->timeout[i]) { 952 int j; 953 954 if (!opts) 955 printf(", "); 956 opts = 0; 957 for (j = 0; pf_timeouts[j].name != NULL; 958 ++j) 959 if (pf_timeouts[j].timeout == i) 960 break; 961 printf("%s %u", pf_timeouts[j].name == NULL ? 962 "inv.timeout" : pf_timeouts[j].name, 963 r->timeout[i]); 964 } 965 printf(")"); 966 } 967 if (r->rule_flag & PFRULE_FRAGMENT) 968 printf(" fragment"); 969 if (r->rule_flag & PFRULE_NODF) 970 printf(" no-df"); 971 if (r->rule_flag & PFRULE_RANDOMID) 972 printf(" random-id"); 973 if (r->min_ttl) 974 printf(" min-ttl %d", r->min_ttl); 975 if (r->max_mss) 976 printf(" max-mss %d", r->max_mss); 977 if (r->rule_flag & PFRULE_SET_TOS) 978 printf(" set-tos 0x%2.2x", r->set_tos); 979 if (r->allow_opts) 980 printf(" allow-opts"); 981 if (r->action == PF_SCRUB) { 982 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 983 printf(" reassemble tcp"); 984 985 printf(" fragment reassemble"); 986 } 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 #ifdef __FreeBSD__ 1004 printf(" divert-to %u", ntohs(r->divert.port)); 1005 #else 1006 if (PF_AZERO(&r->divert.addr, r->af)) { 1007 printf(" divert-reply"); 1008 } else { 1009 /* XXX cut&paste from print_addr */ 1010 char buf[48]; 1011 1012 printf(" divert-to "); 1013 if (inet_ntop(r->af, &r->divert.addr, buf, 1014 sizeof(buf)) == NULL) 1015 printf("?"); 1016 else 1017 printf("%s", buf); 1018 printf(" port %u", ntohs(r->divert.port)); 1019 } 1020 #endif 1021 } 1022 if (!anchor_call[0] && (r->action == PF_NAT || 1023 r->action == PF_BINAT || r->action == PF_RDR)) { 1024 printf(" -> "); 1025 print_pool(&r->rpool, r->rpool.proxy_port[0], 1026 r->rpool.proxy_port[1], r->af, r->action); 1027 } 1028 } 1029 1030 void 1031 print_tabledef(const char *name, int flags, int addrs, 1032 struct node_tinithead *nodes) 1033 { 1034 struct node_tinit *ti, *nti; 1035 struct node_host *h; 1036 1037 printf("table <%s>", name); 1038 if (flags & PFR_TFLAG_CONST) 1039 printf(" const"); 1040 if (flags & PFR_TFLAG_PERSIST) 1041 printf(" persist"); 1042 if (flags & PFR_TFLAG_COUNTERS) 1043 printf(" counters"); 1044 SIMPLEQ_FOREACH(ti, nodes, entries) { 1045 if (ti->file) { 1046 printf(" file \"%s\"", ti->file); 1047 continue; 1048 } 1049 printf(" {"); 1050 for (;;) { 1051 for (h = ti->host; h != NULL; h = h->next) { 1052 printf(h->not ? " !" : " "); 1053 print_addr(&h->addr, h->af, 0); 1054 } 1055 nti = SIMPLEQ_NEXT(ti, entries); 1056 if (nti != NULL && nti->file == NULL) 1057 ti = nti; /* merge lists */ 1058 else 1059 break; 1060 } 1061 printf(" }"); 1062 } 1063 if (addrs && SIMPLEQ_EMPTY(nodes)) 1064 printf(" { }"); 1065 printf("\n"); 1066 } 1067 1068 int 1069 parse_flags(char *s) 1070 { 1071 char *p, *q; 1072 u_int8_t f = 0; 1073 1074 for (p = s; *p; p++) { 1075 if ((q = strchr(tcpflags, *p)) == NULL) 1076 return -1; 1077 else 1078 f |= 1 << (q - tcpflags); 1079 } 1080 return (f ? f : PF_TH_ALL); 1081 } 1082 1083 void 1084 set_ipmask(struct node_host *h, u_int8_t b) 1085 { 1086 struct pf_addr *m, *n; 1087 int i, j = 0; 1088 1089 m = &h->addr.v.a.mask; 1090 memset(m, 0, sizeof(*m)); 1091 1092 while (b >= 32) { 1093 m->addr32[j++] = 0xffffffff; 1094 b -= 32; 1095 } 1096 for (i = 31; i > 31-b; --i) 1097 m->addr32[j] |= (1 << i); 1098 if (b) 1099 m->addr32[j] = htonl(m->addr32[j]); 1100 1101 /* Mask off bits of the address that will never be used. */ 1102 n = &h->addr.v.a.addr; 1103 if (h->addr.type == PF_ADDR_ADDRMASK) 1104 for (i = 0; i < 4; i++) 1105 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1106 } 1107 1108 int 1109 check_netmask(struct node_host *h, sa_family_t af) 1110 { 1111 struct node_host *n = NULL; 1112 struct pf_addr *m; 1113 1114 for (n = h; n != NULL; n = n->next) { 1115 if (h->addr.type == PF_ADDR_TABLE) 1116 continue; 1117 m = &h->addr.v.a.mask; 1118 /* fix up netmask for dynaddr */ 1119 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1120 unmask(m, AF_INET6) > 32) 1121 set_ipmask(n, 32); 1122 /* netmasks > 32 bit are invalid on v4 */ 1123 if (af == AF_INET && 1124 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1125 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1126 unmask(m, AF_INET6)); 1127 return (1); 1128 } 1129 } 1130 return (0); 1131 } 1132 1133 /* interface lookup routines */ 1134 1135 struct node_host *iftab; 1136 1137 void 1138 ifa_load(void) 1139 { 1140 struct ifaddrs *ifap, *ifa; 1141 struct node_host *n = NULL, *h = NULL; 1142 1143 if (getifaddrs(&ifap) < 0) 1144 err(1, "getifaddrs"); 1145 1146 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1147 if (!(ifa->ifa_addr->sa_family == AF_INET || 1148 ifa->ifa_addr->sa_family == AF_INET6 || 1149 ifa->ifa_addr->sa_family == AF_LINK)) 1150 continue; 1151 n = calloc(1, sizeof(struct node_host)); 1152 if (n == NULL) 1153 err(1, "address: calloc"); 1154 n->af = ifa->ifa_addr->sa_family; 1155 n->ifa_flags = ifa->ifa_flags; 1156 #ifdef __KAME__ 1157 if (n->af == AF_INET6 && 1158 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1159 ifa->ifa_addr)->sin6_addr) && 1160 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1161 0) { 1162 struct sockaddr_in6 *sin6; 1163 1164 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1165 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1166 sin6->sin6_addr.s6_addr[3]; 1167 sin6->sin6_addr.s6_addr[2] = 0; 1168 sin6->sin6_addr.s6_addr[3] = 0; 1169 } 1170 #endif 1171 n->ifindex = 0; 1172 if (n->af == AF_INET) { 1173 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1174 ifa->ifa_addr)->sin_addr.s_addr, 1175 sizeof(struct in_addr)); 1176 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1177 ifa->ifa_netmask)->sin_addr.s_addr, 1178 sizeof(struct in_addr)); 1179 if (ifa->ifa_broadaddr != NULL) 1180 memcpy(&n->bcast, &((struct sockaddr_in *) 1181 ifa->ifa_broadaddr)->sin_addr.s_addr, 1182 sizeof(struct in_addr)); 1183 if (ifa->ifa_dstaddr != NULL) 1184 memcpy(&n->peer, &((struct sockaddr_in *) 1185 ifa->ifa_dstaddr)->sin_addr.s_addr, 1186 sizeof(struct in_addr)); 1187 } else if (n->af == AF_INET6) { 1188 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1189 ifa->ifa_addr)->sin6_addr.s6_addr, 1190 sizeof(struct in6_addr)); 1191 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1192 ifa->ifa_netmask)->sin6_addr.s6_addr, 1193 sizeof(struct in6_addr)); 1194 if (ifa->ifa_broadaddr != NULL) 1195 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1196 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1197 sizeof(struct in6_addr)); 1198 if (ifa->ifa_dstaddr != NULL) 1199 memcpy(&n->peer, &((struct sockaddr_in6 *) 1200 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1201 sizeof(struct in6_addr)); 1202 n->ifindex = ((struct sockaddr_in6 *) 1203 ifa->ifa_addr)->sin6_scope_id; 1204 } 1205 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1206 err(1, "ifa_load: strdup"); 1207 n->next = NULL; 1208 n->tail = n; 1209 if (h == NULL) 1210 h = n; 1211 else { 1212 h->tail->next = n; 1213 h->tail = n; 1214 } 1215 } 1216 1217 iftab = h; 1218 freeifaddrs(ifap); 1219 } 1220 1221 int 1222 get_socket_domain(void) 1223 { 1224 int sdom; 1225 1226 sdom = AF_UNSPEC; 1227 #ifdef WITH_INET6 1228 if (sdom == AF_UNSPEC && feature_present("inet6")) 1229 sdom = AF_INET6; 1230 #endif 1231 #ifdef WITH_INET 1232 if (sdom == AF_UNSPEC && feature_present("inet")) 1233 sdom = AF_INET; 1234 #endif 1235 if (sdom == AF_UNSPEC) 1236 sdom = AF_LINK; 1237 1238 return (sdom); 1239 } 1240 1241 struct node_host * 1242 ifa_exists(const char *ifa_name) 1243 { 1244 struct node_host *n; 1245 struct ifgroupreq ifgr; 1246 int s; 1247 1248 if (iftab == NULL) 1249 ifa_load(); 1250 1251 /* check wether this is a group */ 1252 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1253 err(1, "socket"); 1254 bzero(&ifgr, sizeof(ifgr)); 1255 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1256 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == 0) { 1257 /* fake a node_host */ 1258 if ((n = calloc(1, sizeof(*n))) == NULL) 1259 err(1, "calloc"); 1260 if ((n->ifname = strdup(ifa_name)) == NULL) 1261 err(1, "strdup"); 1262 close(s); 1263 return (n); 1264 } 1265 close(s); 1266 1267 for (n = iftab; n; n = n->next) { 1268 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1269 return (n); 1270 } 1271 1272 return (NULL); 1273 } 1274 1275 struct node_host * 1276 ifa_grouplookup(const char *ifa_name, int flags) 1277 { 1278 struct ifg_req *ifg; 1279 struct ifgroupreq ifgr; 1280 int s, len; 1281 struct node_host *n, *h = NULL; 1282 1283 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1284 err(1, "socket"); 1285 bzero(&ifgr, sizeof(ifgr)); 1286 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1287 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) { 1288 close(s); 1289 return (NULL); 1290 } 1291 1292 len = ifgr.ifgr_len; 1293 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1294 err(1, "calloc"); 1295 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1296 err(1, "SIOCGIFGMEMB"); 1297 1298 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1299 ifg++) { 1300 len -= sizeof(struct ifg_req); 1301 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1302 continue; 1303 if (h == NULL) 1304 h = n; 1305 else { 1306 h->tail->next = n; 1307 h->tail = n->tail; 1308 } 1309 } 1310 free(ifgr.ifgr_groups); 1311 close(s); 1312 1313 return (h); 1314 } 1315 1316 struct node_host * 1317 ifa_lookup(const char *ifa_name, int flags) 1318 { 1319 struct node_host *p = NULL, *h = NULL, *n = NULL; 1320 int got4 = 0, got6 = 0; 1321 const char *last_if = NULL; 1322 1323 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1324 return (h); 1325 1326 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1327 ifa_name = NULL; 1328 1329 if (iftab == NULL) 1330 ifa_load(); 1331 1332 for (p = iftab; p; p = p->next) { 1333 if (ifa_skip_if(ifa_name, p)) 1334 continue; 1335 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1336 continue; 1337 if ((flags & PFI_AFLAG_BROADCAST) && 1338 !(p->ifa_flags & IFF_BROADCAST)) 1339 continue; 1340 if ((flags & PFI_AFLAG_PEER) && 1341 !(p->ifa_flags & IFF_POINTOPOINT)) 1342 continue; 1343 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1344 continue; 1345 if (last_if == NULL || strcmp(last_if, p->ifname)) 1346 got4 = got6 = 0; 1347 last_if = p->ifname; 1348 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1349 continue; 1350 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1351 continue; 1352 if (p->af == AF_INET) 1353 got4 = 1; 1354 else 1355 got6 = 1; 1356 n = calloc(1, sizeof(struct node_host)); 1357 if (n == NULL) 1358 err(1, "address: calloc"); 1359 n->af = p->af; 1360 if (flags & PFI_AFLAG_BROADCAST) 1361 memcpy(&n->addr.v.a.addr, &p->bcast, 1362 sizeof(struct pf_addr)); 1363 else if (flags & PFI_AFLAG_PEER) 1364 memcpy(&n->addr.v.a.addr, &p->peer, 1365 sizeof(struct pf_addr)); 1366 else 1367 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1368 sizeof(struct pf_addr)); 1369 if (flags & PFI_AFLAG_NETWORK) 1370 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1371 else { 1372 if (n->af == AF_INET) { 1373 if (p->ifa_flags & IFF_LOOPBACK && 1374 p->ifa_flags & IFF_LINK1) 1375 memcpy(&n->addr.v.a.mask, 1376 &p->addr.v.a.mask, 1377 sizeof(struct pf_addr)); 1378 else 1379 set_ipmask(n, 32); 1380 } else 1381 set_ipmask(n, 128); 1382 } 1383 n->ifindex = p->ifindex; 1384 1385 n->next = NULL; 1386 n->tail = n; 1387 if (h == NULL) 1388 h = n; 1389 else { 1390 h->tail->next = n; 1391 h->tail = n; 1392 } 1393 } 1394 return (h); 1395 } 1396 1397 int 1398 ifa_skip_if(const char *filter, struct node_host *p) 1399 { 1400 int n; 1401 1402 if (p->af != AF_INET && p->af != AF_INET6) 1403 return (1); 1404 if (filter == NULL || !*filter) 1405 return (0); 1406 if (!strcmp(p->ifname, filter)) 1407 return (0); /* exact match */ 1408 n = strlen(filter); 1409 if (n < 1 || n >= IFNAMSIZ) 1410 return (1); /* sanity check */ 1411 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1412 return (1); /* only do exact match in that case */ 1413 if (strncmp(p->ifname, filter, n)) 1414 return (1); /* prefix doesn't match */ 1415 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1416 } 1417 1418 1419 struct node_host * 1420 host(const char *s) 1421 { 1422 struct node_host *h = NULL; 1423 int mask, v4mask, v6mask, cont = 1; 1424 char *p, *q, *ps; 1425 1426 if ((p = strrchr(s, '/')) != NULL) { 1427 mask = strtol(p+1, &q, 0); 1428 if (!q || *q || mask > 128 || q == (p+1)) { 1429 fprintf(stderr, "invalid netmask '%s'\n", p); 1430 return (NULL); 1431 } 1432 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1433 err(1, "host: malloc"); 1434 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1435 v4mask = v6mask = mask; 1436 } else { 1437 if ((ps = strdup(s)) == NULL) 1438 err(1, "host: strdup"); 1439 v4mask = 32; 1440 v6mask = 128; 1441 mask = -1; 1442 } 1443 1444 /* interface with this name exists? */ 1445 if (cont && (h = host_if(ps, mask)) != NULL) 1446 cont = 0; 1447 1448 /* IPv4 address? */ 1449 if (cont && (h = host_v4(s, mask)) != NULL) 1450 cont = 0; 1451 1452 /* IPv6 address? */ 1453 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1454 cont = 0; 1455 1456 /* dns lookup */ 1457 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1458 cont = 0; 1459 free(ps); 1460 1461 if (h == NULL || cont == 1) { 1462 fprintf(stderr, "no IP address found for %s\n", s); 1463 return (NULL); 1464 } 1465 return (h); 1466 } 1467 1468 struct node_host * 1469 host_if(const char *s, int mask) 1470 { 1471 struct node_host *n, *h = NULL; 1472 char *p, *ps; 1473 int flags = 0; 1474 1475 if ((ps = strdup(s)) == NULL) 1476 err(1, "host_if: strdup"); 1477 while ((p = strrchr(ps, ':')) != NULL) { 1478 if (!strcmp(p+1, "network")) 1479 flags |= PFI_AFLAG_NETWORK; 1480 else if (!strcmp(p+1, "broadcast")) 1481 flags |= PFI_AFLAG_BROADCAST; 1482 else if (!strcmp(p+1, "peer")) 1483 flags |= PFI_AFLAG_PEER; 1484 else if (!strcmp(p+1, "0")) 1485 flags |= PFI_AFLAG_NOALIAS; 1486 else { 1487 free(ps); 1488 return (NULL); 1489 } 1490 *p = '\0'; 1491 } 1492 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1493 fprintf(stderr, "illegal combination of interface modifiers\n"); 1494 free(ps); 1495 return (NULL); 1496 } 1497 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1498 fprintf(stderr, "network or broadcast lookup, but " 1499 "extra netmask given\n"); 1500 free(ps); 1501 return (NULL); 1502 } 1503 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1504 /* interface with this name exists */ 1505 h = ifa_lookup(ps, flags); 1506 for (n = h; n != NULL && mask > -1; n = n->next) 1507 set_ipmask(n, mask); 1508 } 1509 1510 free(ps); 1511 return (h); 1512 } 1513 1514 struct node_host * 1515 host_v4(const char *s, int mask) 1516 { 1517 struct node_host *h = NULL; 1518 struct in_addr ina; 1519 int bits = 32; 1520 1521 memset(&ina, 0, sizeof(struct in_addr)); 1522 if (strrchr(s, '/') != NULL) { 1523 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1524 return (NULL); 1525 } else { 1526 if (inet_pton(AF_INET, s, &ina) != 1) 1527 return (NULL); 1528 } 1529 1530 h = calloc(1, sizeof(struct node_host)); 1531 if (h == NULL) 1532 err(1, "address: calloc"); 1533 h->ifname = NULL; 1534 h->af = AF_INET; 1535 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1536 set_ipmask(h, bits); 1537 h->next = NULL; 1538 h->tail = h; 1539 1540 return (h); 1541 } 1542 1543 struct node_host * 1544 host_v6(const char *s, int mask) 1545 { 1546 struct addrinfo hints, *res; 1547 struct node_host *h = NULL; 1548 1549 memset(&hints, 0, sizeof(hints)); 1550 hints.ai_family = AF_INET6; 1551 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1552 hints.ai_flags = AI_NUMERICHOST; 1553 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1554 h = calloc(1, sizeof(struct node_host)); 1555 if (h == NULL) 1556 err(1, "address: calloc"); 1557 h->ifname = NULL; 1558 h->af = AF_INET6; 1559 memcpy(&h->addr.v.a.addr, 1560 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1561 sizeof(h->addr.v.a.addr)); 1562 h->ifindex = 1563 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1564 set_ipmask(h, mask); 1565 freeaddrinfo(res); 1566 h->next = NULL; 1567 h->tail = h; 1568 } 1569 1570 return (h); 1571 } 1572 1573 struct node_host * 1574 host_dns(const char *s, int v4mask, int v6mask) 1575 { 1576 struct addrinfo hints, *res0, *res; 1577 struct node_host *n, *h = NULL; 1578 int error, noalias = 0; 1579 int got4 = 0, got6 = 0; 1580 char *p, *ps; 1581 1582 if ((ps = strdup(s)) == NULL) 1583 err(1, "host_dns: strdup"); 1584 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1585 noalias = 1; 1586 *p = '\0'; 1587 } 1588 memset(&hints, 0, sizeof(hints)); 1589 hints.ai_family = PF_UNSPEC; 1590 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1591 error = getaddrinfo(ps, NULL, &hints, &res0); 1592 if (error) { 1593 free(ps); 1594 return (h); 1595 } 1596 1597 for (res = res0; res; res = res->ai_next) { 1598 if (res->ai_family != AF_INET && 1599 res->ai_family != AF_INET6) 1600 continue; 1601 if (noalias) { 1602 if (res->ai_family == AF_INET) { 1603 if (got4) 1604 continue; 1605 got4 = 1; 1606 } else { 1607 if (got6) 1608 continue; 1609 got6 = 1; 1610 } 1611 } 1612 n = calloc(1, sizeof(struct node_host)); 1613 if (n == NULL) 1614 err(1, "host_dns: calloc"); 1615 n->ifname = NULL; 1616 n->af = res->ai_family; 1617 if (res->ai_family == AF_INET) { 1618 memcpy(&n->addr.v.a.addr, 1619 &((struct sockaddr_in *) 1620 res->ai_addr)->sin_addr.s_addr, 1621 sizeof(struct in_addr)); 1622 set_ipmask(n, v4mask); 1623 } else { 1624 memcpy(&n->addr.v.a.addr, 1625 &((struct sockaddr_in6 *) 1626 res->ai_addr)->sin6_addr.s6_addr, 1627 sizeof(struct in6_addr)); 1628 n->ifindex = 1629 ((struct sockaddr_in6 *) 1630 res->ai_addr)->sin6_scope_id; 1631 set_ipmask(n, v6mask); 1632 } 1633 n->next = NULL; 1634 n->tail = n; 1635 if (h == NULL) 1636 h = n; 1637 else { 1638 h->tail->next = n; 1639 h->tail = n; 1640 } 1641 } 1642 freeaddrinfo(res0); 1643 free(ps); 1644 1645 return (h); 1646 } 1647 1648 /* 1649 * convert a hostname to a list of addresses and put them in the given buffer. 1650 * test: 1651 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1652 */ 1653 int 1654 append_addr(struct pfr_buffer *b, char *s, int test) 1655 { 1656 char *r; 1657 struct node_host *h, *n; 1658 int rv, not = 0; 1659 1660 for (r = s; *r == '!'; r++) 1661 not = !not; 1662 if ((n = host(r)) == NULL) { 1663 errno = 0; 1664 return (-1); 1665 } 1666 rv = append_addr_host(b, n, test, not); 1667 do { 1668 h = n; 1669 n = n->next; 1670 free(h); 1671 } while (n != NULL); 1672 return (rv); 1673 } 1674 1675 /* 1676 * same as previous function, but with a pre-parsed input and the ability 1677 * to "negate" the result. Does not free the node_host list. 1678 * not: 1679 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1680 */ 1681 int 1682 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1683 { 1684 int bits; 1685 struct pfr_addr addr; 1686 1687 do { 1688 bzero(&addr, sizeof(addr)); 1689 addr.pfra_not = n->not ^ not; 1690 addr.pfra_af = n->af; 1691 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1692 switch (n->af) { 1693 case AF_INET: 1694 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1695 bits = 32; 1696 break; 1697 case AF_INET6: 1698 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1699 sizeof(struct in6_addr)); 1700 bits = 128; 1701 break; 1702 default: 1703 errno = EINVAL; 1704 return (-1); 1705 } 1706 if ((test && (not || addr.pfra_net != bits)) || 1707 addr.pfra_net > bits) { 1708 errno = EINVAL; 1709 return (-1); 1710 } 1711 if (pfr_buf_add(b, &addr)) 1712 return (-1); 1713 } while ((n = n->next) != NULL); 1714 1715 return (0); 1716 } 1717 1718 int 1719 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1720 { 1721 struct pfioc_trans_e trans; 1722 1723 bzero(&trans, sizeof(trans)); 1724 trans.rs_num = rs_num; 1725 if (strlcpy(trans.anchor, anchor, 1726 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1727 errx(1, "pfctl_add_trans: strlcpy"); 1728 1729 return pfr_buf_add(buf, &trans); 1730 } 1731 1732 u_int32_t 1733 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1734 { 1735 struct pfioc_trans_e *p; 1736 1737 PFRB_FOREACH(p, buf) 1738 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1739 return (p->ticket); 1740 errx(1, "pfctl_get_ticket: assertion failed"); 1741 } 1742 1743 int 1744 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1745 { 1746 struct pfioc_trans trans; 1747 1748 bzero(&trans, sizeof(trans)); 1749 trans.size = buf->pfrb_size - from; 1750 trans.esize = sizeof(struct pfioc_trans_e); 1751 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1752 return ioctl(dev, cmd, &trans); 1753 } 1754