1/* $OpenBSD: pfctl_parser.c,v 1.240 2008/06/10 20:55:02 mcbride Exp $ */ 2 3/*- 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c) 2001 Daniel Hartmeier 7 * Copyright (c) 2002,2003 Henning Brauer 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 14 * - Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * - Redistributions in binary form must reproduce the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer in the documentation and/or other materials provided 19 * with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 * 34 */ 35 36#include <sys/cdefs.h> 37__FBSDID("$FreeBSD: stable/11/sbin/pfctl/pfctl_parser.c 359573 2020-04-02 18:37:15Z kp $"); 38 39#include <sys/types.h> 40#include <sys/ioctl.h> 41#include <sys/socket.h> 42#include <sys/param.h> 43#include <sys/proc.h> 44#include <net/if.h> 45#include <netinet/in.h> 46#include <netinet/in_systm.h> 47#include <netinet/ip.h> 48#include <netinet/ip_icmp.h> 49#include <netinet/icmp6.h> 50#include <net/pfvar.h> 51#include <arpa/inet.h> 52 53#include <stdio.h> 54#include <stdlib.h> 55#include <string.h> 56#include <ctype.h> 57#include <netdb.h> 58#include <stdarg.h> 59#include <errno.h> 60#include <err.h> 61#include <ifaddrs.h> 62#include <unistd.h> 63 64#include "pfctl_parser.h" 65#include "pfctl.h" 66 67void print_op (u_int8_t, const char *, const char *); 68void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int); 69void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned); 70void print_flags (u_int8_t); 71void print_fromto(struct pf_rule_addr *, pf_osfp_t, 72 struct pf_rule_addr *, u_int8_t, u_int8_t, int, int); 73int ifa_skip_if(const char *filter, struct node_host *p); 74 75struct node_host *ifa_grouplookup(const char *, int); 76struct node_host *host_if(const char *, int); 77struct node_host *host_v4(const char *, int); 78struct node_host *host_v6(const char *, int); 79struct node_host *host_dns(const char *, int, int); 80 81const char *tcpflags = "FSRPAUEW"; 82 83static const struct icmptypeent icmp_type[] = { 84 { "echoreq", ICMP_ECHO }, 85 { "echorep", ICMP_ECHOREPLY }, 86 { "unreach", ICMP_UNREACH }, 87 { "squench", ICMP_SOURCEQUENCH }, 88 { "redir", ICMP_REDIRECT }, 89 { "althost", ICMP_ALTHOSTADDR }, 90 { "routeradv", ICMP_ROUTERADVERT }, 91 { "routersol", ICMP_ROUTERSOLICIT }, 92 { "timex", ICMP_TIMXCEED }, 93 { "paramprob", ICMP_PARAMPROB }, 94 { "timereq", ICMP_TSTAMP }, 95 { "timerep", ICMP_TSTAMPREPLY }, 96 { "inforeq", ICMP_IREQ }, 97 { "inforep", ICMP_IREQREPLY }, 98 { "maskreq", ICMP_MASKREQ }, 99 { "maskrep", ICMP_MASKREPLY }, 100 { "trace", ICMP_TRACEROUTE }, 101 { "dataconv", ICMP_DATACONVERR }, 102 { "mobredir", ICMP_MOBILE_REDIRECT }, 103 { "ipv6-where", ICMP_IPV6_WHEREAREYOU }, 104 { "ipv6-here", ICMP_IPV6_IAMHERE }, 105 { "mobregreq", ICMP_MOBILE_REGREQUEST }, 106 { "mobregrep", ICMP_MOBILE_REGREPLY }, 107 { "skip", ICMP_SKIP }, 108 { "photuris", ICMP_PHOTURIS } 109}; 110 111static const struct icmptypeent icmp6_type[] = { 112 { "unreach", ICMP6_DST_UNREACH }, 113 { "toobig", ICMP6_PACKET_TOO_BIG }, 114 { "timex", ICMP6_TIME_EXCEEDED }, 115 { "paramprob", ICMP6_PARAM_PROB }, 116 { "echoreq", ICMP6_ECHO_REQUEST }, 117 { "echorep", ICMP6_ECHO_REPLY }, 118 { "groupqry", ICMP6_MEMBERSHIP_QUERY }, 119 { "listqry", MLD_LISTENER_QUERY }, 120 { "grouprep", ICMP6_MEMBERSHIP_REPORT }, 121 { "listenrep", MLD_LISTENER_REPORT }, 122 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION }, 123 { "listendone", MLD_LISTENER_DONE }, 124 { "routersol", ND_ROUTER_SOLICIT }, 125 { "routeradv", ND_ROUTER_ADVERT }, 126 { "neighbrsol", ND_NEIGHBOR_SOLICIT }, 127 { "neighbradv", ND_NEIGHBOR_ADVERT }, 128 { "redir", ND_REDIRECT }, 129 { "routrrenum", ICMP6_ROUTER_RENUMBERING }, 130 { "wrureq", ICMP6_WRUREQUEST }, 131 { "wrurep", ICMP6_WRUREPLY }, 132 { "fqdnreq", ICMP6_FQDN_QUERY }, 133 { "fqdnrep", ICMP6_FQDN_REPLY }, 134 { "niqry", ICMP6_NI_QUERY }, 135 { "nirep", ICMP6_NI_REPLY }, 136 { "mtraceresp", MLD_MTRACE_RESP }, 137 { "mtrace", MLD_MTRACE } 138}; 139 140static const struct icmpcodeent icmp_code[] = { 141 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET }, 142 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST }, 143 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL }, 144 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT }, 145 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG }, 146 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL }, 147 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN }, 148 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN }, 149 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED }, 150 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB }, 151 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB }, 152 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET }, 153 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST }, 154 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB }, 155 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE }, 156 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF }, 157 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET }, 158 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST }, 159 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET }, 160 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST }, 161 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL }, 162 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON }, 163 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS }, 164 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS }, 165 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR }, 166 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT }, 167 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH }, 168 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX }, 169 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED }, 170 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED } 171}; 172 173static const struct icmpcodeent icmp6_code[] = { 174 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN }, 175 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE }, 176 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR }, 177 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE }, 178 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR }, 179 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT }, 180 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT }, 181 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY }, 182 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER }, 183 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER }, 184 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK }, 185 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER } 186}; 187 188const struct pf_timeout pf_timeouts[] = { 189 { "tcp.first", PFTM_TCP_FIRST_PACKET }, 190 { "tcp.opening", PFTM_TCP_OPENING }, 191 { "tcp.established", PFTM_TCP_ESTABLISHED }, 192 { "tcp.closing", PFTM_TCP_CLOSING }, 193 { "tcp.finwait", PFTM_TCP_FIN_WAIT }, 194 { "tcp.closed", PFTM_TCP_CLOSED }, 195 { "tcp.tsdiff", PFTM_TS_DIFF }, 196 { "udp.first", PFTM_UDP_FIRST_PACKET }, 197 { "udp.single", PFTM_UDP_SINGLE }, 198 { "udp.multiple", PFTM_UDP_MULTIPLE }, 199 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 200 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 201 { "other.first", PFTM_OTHER_FIRST_PACKET }, 202 { "other.single", PFTM_OTHER_SINGLE }, 203 { "other.multiple", PFTM_OTHER_MULTIPLE }, 204 { "frag", PFTM_FRAG }, 205 { "interval", PFTM_INTERVAL }, 206 { "adaptive.start", PFTM_ADAPTIVE_START }, 207 { "adaptive.end", PFTM_ADAPTIVE_END }, 208 { "src.track", PFTM_SRC_NODE }, 209 { NULL, 0 } 210}; 211 212const struct icmptypeent * 213geticmptypebynumber(u_int8_t type, sa_family_t af) 214{ 215 unsigned int i; 216 217 if (af != AF_INET6) { 218 for (i=0; i < nitems(icmp_type); i++) { 219 if (type == icmp_type[i].type) 220 return (&icmp_type[i]); 221 } 222 } else { 223 for (i=0; i < nitems(icmp6_type); i++) { 224 if (type == icmp6_type[i].type) 225 return (&icmp6_type[i]); 226 } 227 } 228 return (NULL); 229} 230 231const struct icmptypeent * 232geticmptypebyname(char *w, sa_family_t af) 233{ 234 unsigned int i; 235 236 if (af != AF_INET6) { 237 for (i=0; i < nitems(icmp_type); i++) { 238 if (!strcmp(w, icmp_type[i].name)) 239 return (&icmp_type[i]); 240 } 241 } else { 242 for (i=0; i < nitems(icmp6_type); i++) { 243 if (!strcmp(w, icmp6_type[i].name)) 244 return (&icmp6_type[i]); 245 } 246 } 247 return (NULL); 248} 249 250const struct icmpcodeent * 251geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 252{ 253 unsigned int i; 254 255 if (af != AF_INET6) { 256 for (i=0; i < nitems(icmp_code); 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 < nitems(icmp6_code); i++) { 263 if (type == icmp6_code[i].type && 264 code == icmp6_code[i].code) 265 return (&icmp6_code[i]); 266 } 267 } 268 return (NULL); 269} 270 271const struct icmpcodeent * 272geticmpcodebyname(u_long type, char *w, sa_family_t af) 273{ 274 unsigned int i; 275 276 if (af != AF_INET6) { 277 for (i=0; i < nitems(icmp_code); i++) { 278 if (type == icmp_code[i].type && 279 !strcmp(w, icmp_code[i].name)) 280 return (&icmp_code[i]); 281 } 282 } else { 283 for (i=0; i < nitems(icmp6_code); i++) { 284 if (type == icmp6_code[i].type && 285 !strcmp(w, icmp6_code[i].name)) 286 return (&icmp6_code[i]); 287 } 288 } 289 return (NULL); 290} 291 292void 293print_op(u_int8_t op, const char *a1, const char *a2) 294{ 295 if (op == PF_OP_IRG) 296 printf(" %s >< %s", a1, a2); 297 else if (op == PF_OP_XRG) 298 printf(" %s <> %s", a1, a2); 299 else if (op == PF_OP_EQ) 300 printf(" = %s", a1); 301 else if (op == PF_OP_NE) 302 printf(" != %s", a1); 303 else if (op == PF_OP_LT) 304 printf(" < %s", a1); 305 else if (op == PF_OP_LE) 306 printf(" <= %s", a1); 307 else if (op == PF_OP_GT) 308 printf(" > %s", a1); 309 else if (op == PF_OP_GE) 310 printf(" >= %s", a1); 311 else if (op == PF_OP_RRG) 312 printf(" %s:%s", a1, a2); 313} 314 315void 316print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric) 317{ 318 char a1[6], a2[6]; 319 struct servent *s; 320 321 if (!numeric) 322 s = getservbyport(p1, proto); 323 else 324 s = NULL; 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 336void 337print_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 350void 351print_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 360void 361print_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, int numeric) 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 numeric); 385 if (osfp != PF_OSFP_ANY) 386 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 387 sizeof(buf))); 388 389 printf(" to "); 390 if (dst->neg) 391 printf("! "); 392 print_addr(&dst->addr, af, verbose); 393 if (dst->port_op) 394 print_port(dst->port_op, dst->port[0], 395 dst->port[1], 396 proto == IPPROTO_TCP ? "tcp" : "udp", 397 numeric); 398 } 399} 400 401void 402print_pool(struct pf_pool *pool, u_int16_t p1, u_int16_t p2, 403 sa_family_t af, int id) 404{ 405 struct pf_pooladdr *pooladdr; 406 407 if ((TAILQ_FIRST(&pool->list) != NULL) && 408 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 409 printf("{ "); 410 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 411 switch (id) { 412 case PF_NAT: 413 case PF_RDR: 414 case PF_BINAT: 415 print_addr(&pooladdr->addr, af, 0); 416 break; 417 case PF_PASS: 418 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 419 printf("%s", pooladdr->ifname); 420 else { 421 printf("(%s ", pooladdr->ifname); 422 print_addr(&pooladdr->addr, af, 0); 423 printf(")"); 424 } 425 break; 426 default: 427 break; 428 } 429 if (TAILQ_NEXT(pooladdr, entries) != NULL) 430 printf(", "); 431 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 432 printf(" }"); 433 } 434 switch (id) { 435 case PF_NAT: 436 if ((p1 != PF_NAT_PROXY_PORT_LOW || 437 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 438 if (p1 == p2) 439 printf(" port %u", p1); 440 else 441 printf(" port %u:%u", p1, p2); 442 } 443 break; 444 case PF_RDR: 445 if (p1) { 446 printf(" port %u", p1); 447 if (p2 && (p2 != p1)) 448 printf(":%u", p2); 449 } 450 break; 451 default: 452 break; 453 } 454 switch (pool->opts & PF_POOL_TYPEMASK) { 455 case PF_POOL_NONE: 456 break; 457 case PF_POOL_BITMASK: 458 printf(" bitmask"); 459 break; 460 case PF_POOL_RANDOM: 461 printf(" random"); 462 break; 463 case PF_POOL_SRCHASH: 464 printf(" source-hash 0x%08x%08x%08x%08x", 465 pool->key.key32[0], pool->key.key32[1], 466 pool->key.key32[2], pool->key.key32[3]); 467 break; 468 case PF_POOL_ROUNDROBIN: 469 printf(" round-robin"); 470 break; 471 } 472 if (pool->opts & PF_POOL_STICKYADDR) 473 printf(" sticky-address"); 474 if (id == PF_NAT && p1 == 0 && p2 == 0) 475 printf(" static-port"); 476} 477 478const char *pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 479const char *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 480const char *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 481const char *pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 482 483void 484print_status(struct pf_status *s, int opts) 485{ 486 char statline[80], *running; 487 time_t runtime; 488 int i; 489 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 490 static const char hex[] = "0123456789abcdef"; 491 492 runtime = time(NULL) - s->since; 493 running = s->running ? "Enabled" : "Disabled"; 494 495 if (s->since) { 496 unsigned int sec, min, hrs, day = runtime; 497 498 sec = day % 60; 499 day /= 60; 500 min = day % 60; 501 day /= 60; 502 hrs = day % 24; 503 day /= 24; 504 snprintf(statline, sizeof(statline), 505 "Status: %s for %u days %.2u:%.2u:%.2u", 506 running, day, hrs, min, sec); 507 } else 508 snprintf(statline, sizeof(statline), "Status: %s", running); 509 printf("%-44s", statline); 510 switch (s->debug) { 511 case PF_DEBUG_NONE: 512 printf("%15s\n\n", "Debug: None"); 513 break; 514 case PF_DEBUG_URGENT: 515 printf("%15s\n\n", "Debug: Urgent"); 516 break; 517 case PF_DEBUG_MISC: 518 printf("%15s\n\n", "Debug: Misc"); 519 break; 520 case PF_DEBUG_NOISY: 521 printf("%15s\n\n", "Debug: Loud"); 522 break; 523 } 524 525 if (opts & PF_OPT_VERBOSE) { 526 printf("Hostid: 0x%08x\n", ntohl(s->hostid)); 527 528 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 529 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 530 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 531 } 532 buf[i + i] = '\0'; 533 printf("Checksum: 0x%s\n\n", buf); 534 } 535 536 if (s->ifname[0] != 0) { 537 printf("Interface Stats for %-16s %5s %16s\n", 538 s->ifname, "IPv4", "IPv6"); 539 printf(" %-25s %14llu %16llu\n", "Bytes In", 540 (unsigned long long)s->bcounters[0][0], 541 (unsigned long long)s->bcounters[1][0]); 542 printf(" %-25s %14llu %16llu\n", "Bytes Out", 543 (unsigned long long)s->bcounters[0][1], 544 (unsigned long long)s->bcounters[1][1]); 545 printf(" Packets In\n"); 546 printf(" %-23s %14llu %16llu\n", "Passed", 547 (unsigned long long)s->pcounters[0][0][PF_PASS], 548 (unsigned long long)s->pcounters[1][0][PF_PASS]); 549 printf(" %-23s %14llu %16llu\n", "Blocked", 550 (unsigned long long)s->pcounters[0][0][PF_DROP], 551 (unsigned long long)s->pcounters[1][0][PF_DROP]); 552 printf(" Packets Out\n"); 553 printf(" %-23s %14llu %16llu\n", "Passed", 554 (unsigned long long)s->pcounters[0][1][PF_PASS], 555 (unsigned long long)s->pcounters[1][1][PF_PASS]); 556 printf(" %-23s %14llu %16llu\n\n", "Blocked", 557 (unsigned long long)s->pcounters[0][1][PF_DROP], 558 (unsigned long long)s->pcounters[1][1][PF_DROP]); 559 } 560 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 561 printf(" %-25s %14u %14s\n", "current entries", s->states, ""); 562 for (i = 0; i < FCNT_MAX; i++) { 563 printf(" %-25s %14llu ", pf_fcounters[i], 564 (unsigned long long)s->fcounters[i]); 565 if (runtime > 0) 566 printf("%14.1f/s\n", 567 (double)s->fcounters[i] / (double)runtime); 568 else 569 printf("%14s\n", ""); 570 } 571 if (opts & PF_OPT_VERBOSE) { 572 printf("Source Tracking Table\n"); 573 printf(" %-25s %14u %14s\n", "current entries", 574 s->src_nodes, ""); 575 for (i = 0; i < SCNT_MAX; i++) { 576 printf(" %-25s %14lld ", pf_scounters[i], 577#ifdef __FreeBSD__ 578 (long long)s->scounters[i]); 579#else 580 s->scounters[i]); 581#endif 582 if (runtime > 0) 583 printf("%14.1f/s\n", 584 (double)s->scounters[i] / (double)runtime); 585 else 586 printf("%14s\n", ""); 587 } 588 } 589 printf("Counters\n"); 590 for (i = 0; i < PFRES_MAX; i++) { 591 printf(" %-25s %14llu ", pf_reasons[i], 592 (unsigned long long)s->counters[i]); 593 if (runtime > 0) 594 printf("%14.1f/s\n", 595 (double)s->counters[i] / (double)runtime); 596 else 597 printf("%14s\n", ""); 598 } 599 if (opts & PF_OPT_VERBOSE) { 600 printf("Limit Counters\n"); 601 for (i = 0; i < LCNT_MAX; i++) { 602 printf(" %-25s %14lld ", pf_lcounters[i], 603#ifdef __FreeBSD__ 604 (unsigned long long)s->lcounters[i]); 605#else 606 s->lcounters[i]); 607#endif 608 if (runtime > 0) 609 printf("%14.1f/s\n", 610 (double)s->lcounters[i] / (double)runtime); 611 else 612 printf("%14s\n", ""); 613 } 614 } 615} 616 617void 618print_running(struct pf_status *status) 619{ 620 printf("%s\n", status->running ? "Enabled" : "Disabled"); 621} 622 623void 624print_src_node(struct pf_src_node *sn, int opts) 625{ 626 struct pf_addr_wrap aw; 627 int min, sec; 628 629 memset(&aw, 0, sizeof(aw)); 630 if (sn->af == AF_INET) 631 aw.v.a.mask.addr32[0] = 0xffffffff; 632 else 633 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 634 635 aw.v.a.addr = sn->addr; 636 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 637 printf(" -> "); 638 aw.v.a.addr = sn->raddr; 639 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 640 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 641 sn->conn, sn->conn_rate.count / 1000, 642 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 643 if (opts & PF_OPT_VERBOSE) { 644 sec = sn->creation % 60; 645 sn->creation /= 60; 646 min = sn->creation % 60; 647 sn->creation /= 60; 648 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 649 if (sn->states == 0) { 650 sec = sn->expire % 60; 651 sn->expire /= 60; 652 min = sn->expire % 60; 653 sn->expire /= 60; 654 printf(", expires in %.2u:%.2u:%.2u", 655 sn->expire, min, sec); 656 } 657 printf(", %llu pkts, %llu bytes", 658#ifdef __FreeBSD__ 659 (unsigned long long)(sn->packets[0] + sn->packets[1]), 660 (unsigned long long)(sn->bytes[0] + sn->bytes[1])); 661#else 662 sn->packets[0] + sn->packets[1], 663 sn->bytes[0] + sn->bytes[1]); 664#endif 665 switch (sn->ruletype) { 666 case PF_NAT: 667 if (sn->rule.nr != -1) 668 printf(", nat rule %u", sn->rule.nr); 669 break; 670 case PF_RDR: 671 if (sn->rule.nr != -1) 672 printf(", rdr rule %u", sn->rule.nr); 673 break; 674 case PF_PASS: 675 if (sn->rule.nr != -1) 676 printf(", filter rule %u", sn->rule.nr); 677 break; 678 } 679 printf("\n"); 680 } 681} 682 683void 684print_rule(struct pf_rule *r, const char *anchor_call, int verbose, int numeric) 685{ 686 static const char *actiontypes[] = { "pass", "block", "scrub", 687 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" }; 688 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 689 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 690 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 691 int i, opts; 692 693 if (verbose) 694 printf("@%d ", r->nr); 695 if (r->action > PF_NORDR) 696 printf("action(%d)", r->action); 697 else if (anchor_call[0]) { 698 if (anchor_call[0] == '_') { 699 printf("%s", anchortypes[r->action]); 700 } else 701 printf("%s \"%s\"", anchortypes[r->action], 702 anchor_call); 703 } else { 704 printf("%s", actiontypes[r->action]); 705 if (r->natpass) 706 printf(" pass"); 707 } 708 if (r->action == PF_DROP) { 709 if (r->rule_flag & PFRULE_RETURN) 710 printf(" return"); 711 else if (r->rule_flag & PFRULE_RETURNRST) { 712 if (!r->return_ttl) 713 printf(" return-rst"); 714 else 715 printf(" return-rst(ttl %d)", r->return_ttl); 716 } else if (r->rule_flag & PFRULE_RETURNICMP) { 717 const struct icmpcodeent *ic, *ic6; 718 719 ic = geticmpcodebynumber(r->return_icmp >> 8, 720 r->return_icmp & 255, AF_INET); 721 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 722 r->return_icmp6 & 255, AF_INET6); 723 724 switch (r->af) { 725 case AF_INET: 726 printf(" return-icmp"); 727 if (ic == NULL) 728 printf("(%u)", r->return_icmp & 255); 729 else 730 printf("(%s)", ic->name); 731 break; 732 case AF_INET6: 733 printf(" return-icmp6"); 734 if (ic6 == NULL) 735 printf("(%u)", r->return_icmp6 & 255); 736 else 737 printf("(%s)", ic6->name); 738 break; 739 default: 740 printf(" return-icmp"); 741 if (ic == NULL) 742 printf("(%u, ", r->return_icmp & 255); 743 else 744 printf("(%s, ", ic->name); 745 if (ic6 == NULL) 746 printf("%u)", r->return_icmp6 & 255); 747 else 748 printf("%s)", ic6->name); 749 break; 750 } 751 } else 752 printf(" drop"); 753 } 754 if (r->direction == PF_IN) 755 printf(" in"); 756 else if (r->direction == PF_OUT) 757 printf(" out"); 758 if (r->log) { 759 printf(" log"); 760 if (r->log & ~PF_LOG || r->logif) { 761 int count = 0; 762 763 printf(" ("); 764 if (r->log & PF_LOG_ALL) 765 printf("%sall", count++ ? ", " : ""); 766 if (r->log & PF_LOG_SOCKET_LOOKUP) 767 printf("%suser", count++ ? ", " : ""); 768 if (r->logif) 769 printf("%sto pflog%u", count++ ? ", " : "", 770 r->logif); 771 printf(")"); 772 } 773 } 774 if (r->quick) 775 printf(" quick"); 776 if (r->ifname[0]) { 777 if (r->ifnot) 778 printf(" on ! %s", r->ifname); 779 else 780 printf(" on %s", r->ifname); 781 } 782 if (r->rt) { 783 if (r->rt == PF_ROUTETO) 784 printf(" route-to"); 785 else if (r->rt == PF_REPLYTO) 786 printf(" reply-to"); 787 else if (r->rt == PF_DUPTO) 788 printf(" dup-to"); 789 else if (r->rt == PF_FASTROUTE) 790 printf(" fastroute"); 791 if (r->rt != PF_FASTROUTE) { 792 printf(" "); 793 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 794 } 795 } 796 if (r->af) { 797 if (r->af == AF_INET) 798 printf(" inet"); 799 else 800 printf(" inet6"); 801 } 802 if (r->proto) { 803 struct protoent *p; 804 805 if ((p = getprotobynumber(r->proto)) != NULL) 806 printf(" proto %s", p->p_name); 807 else 808 printf(" proto %u", r->proto); 809 } 810 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 811 verbose, numeric); 812 if (r->uid.op) 813 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 814 UID_MAX); 815 if (r->gid.op) 816 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 817 GID_MAX); 818 if (r->flags || r->flagset) { 819 printf(" flags "); 820 print_flags(r->flags); 821 printf("/"); 822 print_flags(r->flagset); 823 } else if (r->action == PF_PASS && 824 (!r->proto || r->proto == IPPROTO_TCP) && 825 !(r->rule_flag & PFRULE_FRAGMENT) && 826 !anchor_call[0] && r->keep_state) 827 printf(" flags any"); 828 if (r->type) { 829 const struct icmptypeent *it; 830 831 it = geticmptypebynumber(r->type-1, r->af); 832 if (r->af != AF_INET6) 833 printf(" icmp-type"); 834 else 835 printf(" icmp6-type"); 836 if (it != NULL) 837 printf(" %s", it->name); 838 else 839 printf(" %u", r->type-1); 840 if (r->code) { 841 const struct icmpcodeent *ic; 842 843 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 844 if (ic != NULL) 845 printf(" code %s", ic->name); 846 else 847 printf(" code %u", r->code-1); 848 } 849 } 850 if (r->tos) 851 printf(" tos 0x%2.2x", r->tos); 852 if (r->prio) 853 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 854 if (r->scrub_flags & PFSTATE_SETMASK) { 855 char *comma = ""; 856 printf(" set ("); 857 if (r->scrub_flags & PFSTATE_SETPRIO) { 858 if (r->set_prio[0] == r->set_prio[1]) 859 printf("%s prio %u", comma, r->set_prio[0]); 860 else 861 printf("%s prio(%u, %u)", comma, r->set_prio[0], 862 r->set_prio[1]); 863 comma = ","; 864 } 865 printf(" )"); 866 } 867 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 868 printf(" no state"); 869 else if (r->keep_state == PF_STATE_NORMAL) 870 printf(" keep state"); 871 else if (r->keep_state == PF_STATE_MODULATE) 872 printf(" modulate state"); 873 else if (r->keep_state == PF_STATE_SYNPROXY) 874 printf(" synproxy state"); 875 if (r->prob) { 876 char buf[20]; 877 878 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 879 for (i = strlen(buf)-1; i > 0; i--) { 880 if (buf[i] == '0') 881 buf[i] = '\0'; 882 else { 883 if (buf[i] == '.') 884 buf[i] = '\0'; 885 break; 886 } 887 } 888 printf(" probability %s%%", buf); 889 } 890 opts = 0; 891 if (r->max_states || r->max_src_nodes || r->max_src_states) 892 opts = 1; 893 if (r->rule_flag & PFRULE_NOSYNC) 894 opts = 1; 895 if (r->rule_flag & PFRULE_SRCTRACK) 896 opts = 1; 897 if (r->rule_flag & PFRULE_IFBOUND) 898 opts = 1; 899 if (r->rule_flag & PFRULE_STATESLOPPY) 900 opts = 1; 901 for (i = 0; !opts && i < PFTM_MAX; ++i) 902 if (r->timeout[i]) 903 opts = 1; 904 if (opts) { 905 printf(" ("); 906 if (r->max_states) { 907 printf("max %u", r->max_states); 908 opts = 0; 909 } 910 if (r->rule_flag & PFRULE_NOSYNC) { 911 if (!opts) 912 printf(", "); 913 printf("no-sync"); 914 opts = 0; 915 } 916 if (r->rule_flag & PFRULE_SRCTRACK) { 917 if (!opts) 918 printf(", "); 919 printf("source-track"); 920 if (r->rule_flag & PFRULE_RULESRCTRACK) 921 printf(" rule"); 922 else 923 printf(" global"); 924 opts = 0; 925 } 926 if (r->max_src_states) { 927 if (!opts) 928 printf(", "); 929 printf("max-src-states %u", r->max_src_states); 930 opts = 0; 931 } 932 if (r->max_src_conn) { 933 if (!opts) 934 printf(", "); 935 printf("max-src-conn %u", r->max_src_conn); 936 opts = 0; 937 } 938 if (r->max_src_conn_rate.limit) { 939 if (!opts) 940 printf(", "); 941 printf("max-src-conn-rate %u/%u", 942 r->max_src_conn_rate.limit, 943 r->max_src_conn_rate.seconds); 944 opts = 0; 945 } 946 if (r->max_src_nodes) { 947 if (!opts) 948 printf(", "); 949 printf("max-src-nodes %u", r->max_src_nodes); 950 opts = 0; 951 } 952 if (r->overload_tblname[0]) { 953 if (!opts) 954 printf(", "); 955 printf("overload <%s>", r->overload_tblname); 956 if (r->flush) 957 printf(" flush"); 958 if (r->flush & PF_FLUSH_GLOBAL) 959 printf(" global"); 960 } 961 if (r->rule_flag & PFRULE_IFBOUND) { 962 if (!opts) 963 printf(", "); 964 printf("if-bound"); 965 opts = 0; 966 } 967 if (r->rule_flag & PFRULE_STATESLOPPY) { 968 if (!opts) 969 printf(", "); 970 printf("sloppy"); 971 opts = 0; 972 } 973 for (i = 0; i < PFTM_MAX; ++i) 974 if (r->timeout[i]) { 975 int j; 976 977 if (!opts) 978 printf(", "); 979 opts = 0; 980 for (j = 0; pf_timeouts[j].name != NULL; 981 ++j) 982 if (pf_timeouts[j].timeout == i) 983 break; 984 printf("%s %u", pf_timeouts[j].name == NULL ? 985 "inv.timeout" : pf_timeouts[j].name, 986 r->timeout[i]); 987 } 988 printf(")"); 989 } 990 if (r->rule_flag & PFRULE_FRAGMENT) 991 printf(" fragment"); 992 if (r->rule_flag & PFRULE_NODF) 993 printf(" no-df"); 994 if (r->rule_flag & PFRULE_RANDOMID) 995 printf(" random-id"); 996 if (r->min_ttl) 997 printf(" min-ttl %d", r->min_ttl); 998 if (r->max_mss) 999 printf(" max-mss %d", r->max_mss); 1000 if (r->rule_flag & PFRULE_SET_TOS) 1001 printf(" set-tos 0x%2.2x", r->set_tos); 1002 if (r->allow_opts) 1003 printf(" allow-opts"); 1004 if (r->action == PF_SCRUB) { 1005 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1006 printf(" reassemble tcp"); 1007 1008 printf(" fragment reassemble"); 1009 } 1010 if (r->label[0]) 1011 printf(" label \"%s\"", r->label); 1012 if (r->qname[0] && r->pqname[0]) 1013 printf(" queue(%s, %s)", r->qname, r->pqname); 1014 else if (r->qname[0]) 1015 printf(" queue %s", r->qname); 1016 if (r->tagname[0]) 1017 printf(" tag %s", r->tagname); 1018 if (r->match_tagname[0]) { 1019 if (r->match_tag_not) 1020 printf(" !"); 1021 printf(" tagged %s", r->match_tagname); 1022 } 1023 if (r->rtableid != -1) 1024 printf(" rtable %u", r->rtableid); 1025 if (r->divert.port) { 1026#ifdef __FreeBSD__ 1027 printf(" divert-to %u", ntohs(r->divert.port)); 1028#else 1029 if (PF_AZERO(&r->divert.addr, r->af)) { 1030 printf(" divert-reply"); 1031 } else { 1032 /* XXX cut&paste from print_addr */ 1033 char buf[48]; 1034 1035 printf(" divert-to "); 1036 if (inet_ntop(r->af, &r->divert.addr, buf, 1037 sizeof(buf)) == NULL) 1038 printf("?"); 1039 else 1040 printf("%s", buf); 1041 printf(" port %u", ntohs(r->divert.port)); 1042 } 1043#endif 1044 } 1045 if (!anchor_call[0] && (r->action == PF_NAT || 1046 r->action == PF_BINAT || r->action == PF_RDR)) { 1047 printf(" -> "); 1048 print_pool(&r->rpool, r->rpool.proxy_port[0], 1049 r->rpool.proxy_port[1], r->af, r->action); 1050 } 1051} 1052 1053void 1054print_tabledef(const char *name, int flags, int addrs, 1055 struct node_tinithead *nodes) 1056{ 1057 struct node_tinit *ti, *nti; 1058 struct node_host *h; 1059 1060 printf("table <%s>", name); 1061 if (flags & PFR_TFLAG_CONST) 1062 printf(" const"); 1063 if (flags & PFR_TFLAG_PERSIST) 1064 printf(" persist"); 1065 if (flags & PFR_TFLAG_COUNTERS) 1066 printf(" counters"); 1067 SIMPLEQ_FOREACH(ti, nodes, entries) { 1068 if (ti->file) { 1069 printf(" file \"%s\"", ti->file); 1070 continue; 1071 } 1072 printf(" {"); 1073 for (;;) { 1074 for (h = ti->host; h != NULL; h = h->next) { 1075 printf(h->not ? " !" : " "); 1076 print_addr(&h->addr, h->af, 0); 1077 } 1078 nti = SIMPLEQ_NEXT(ti, entries); 1079 if (nti != NULL && nti->file == NULL) 1080 ti = nti; /* merge lists */ 1081 else 1082 break; 1083 } 1084 printf(" }"); 1085 } 1086 if (addrs && SIMPLEQ_EMPTY(nodes)) 1087 printf(" { }"); 1088 printf("\n"); 1089} 1090 1091int 1092parse_flags(char *s) 1093{ 1094 char *p, *q; 1095 u_int8_t f = 0; 1096 1097 for (p = s; *p; p++) { 1098 if ((q = strchr(tcpflags, *p)) == NULL) 1099 return -1; 1100 else 1101 f |= 1 << (q - tcpflags); 1102 } 1103 return (f ? f : PF_TH_ALL); 1104} 1105 1106void 1107set_ipmask(struct node_host *h, u_int8_t b) 1108{ 1109 struct pf_addr *m, *n; 1110 int i, j = 0; 1111 1112 m = &h->addr.v.a.mask; 1113 memset(m, 0, sizeof(*m)); 1114 1115 while (b >= 32) { 1116 m->addr32[j++] = 0xffffffff; 1117 b -= 32; 1118 } 1119 for (i = 31; i > 31-b; --i) 1120 m->addr32[j] |= (1 << i); 1121 if (b) 1122 m->addr32[j] = htonl(m->addr32[j]); 1123 1124 /* Mask off bits of the address that will never be used. */ 1125 n = &h->addr.v.a.addr; 1126 if (h->addr.type == PF_ADDR_ADDRMASK) 1127 for (i = 0; i < 4; i++) 1128 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1129} 1130 1131int 1132check_netmask(struct node_host *h, sa_family_t af) 1133{ 1134 struct node_host *n = NULL; 1135 struct pf_addr *m; 1136 1137 for (n = h; n != NULL; n = n->next) { 1138 if (h->addr.type == PF_ADDR_TABLE) 1139 continue; 1140 m = &h->addr.v.a.mask; 1141 /* fix up netmask for dynaddr */ 1142 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1143 unmask(m, AF_INET6) > 32) 1144 set_ipmask(n, 32); 1145 /* netmasks > 32 bit are invalid on v4 */ 1146 if (af == AF_INET && 1147 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1148 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1149 unmask(m, AF_INET6)); 1150 return (1); 1151 } 1152 } 1153 return (0); 1154} 1155 1156/* interface lookup routines */ 1157 1158struct node_host *iftab; 1159 1160void 1161ifa_load(void) 1162{ 1163 struct ifaddrs *ifap, *ifa; 1164 struct node_host *n = NULL, *h = NULL; 1165 1166 if (getifaddrs(&ifap) < 0) 1167 err(1, "getifaddrs"); 1168 1169 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1170 if (!(ifa->ifa_addr->sa_family == AF_INET || 1171 ifa->ifa_addr->sa_family == AF_INET6 || 1172 ifa->ifa_addr->sa_family == AF_LINK)) 1173 continue; 1174 n = calloc(1, sizeof(struct node_host)); 1175 if (n == NULL) 1176 err(1, "address: calloc"); 1177 n->af = ifa->ifa_addr->sa_family; 1178 n->ifa_flags = ifa->ifa_flags; 1179#ifdef __KAME__ 1180 if (n->af == AF_INET6 && 1181 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1182 ifa->ifa_addr)->sin6_addr) && 1183 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1184 0) { 1185 struct sockaddr_in6 *sin6; 1186 1187 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1188 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1189 sin6->sin6_addr.s6_addr[3]; 1190 sin6->sin6_addr.s6_addr[2] = 0; 1191 sin6->sin6_addr.s6_addr[3] = 0; 1192 } 1193#endif 1194 n->ifindex = 0; 1195 if (n->af == AF_INET) { 1196 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1197 ifa->ifa_addr)->sin_addr.s_addr, 1198 sizeof(struct in_addr)); 1199 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1200 ifa->ifa_netmask)->sin_addr.s_addr, 1201 sizeof(struct in_addr)); 1202 if (ifa->ifa_broadaddr != NULL) 1203 memcpy(&n->bcast, &((struct sockaddr_in *) 1204 ifa->ifa_broadaddr)->sin_addr.s_addr, 1205 sizeof(struct in_addr)); 1206 if (ifa->ifa_dstaddr != NULL) 1207 memcpy(&n->peer, &((struct sockaddr_in *) 1208 ifa->ifa_dstaddr)->sin_addr.s_addr, 1209 sizeof(struct in_addr)); 1210 } else if (n->af == AF_INET6) { 1211 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1212 ifa->ifa_addr)->sin6_addr.s6_addr, 1213 sizeof(struct in6_addr)); 1214 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1215 ifa->ifa_netmask)->sin6_addr.s6_addr, 1216 sizeof(struct in6_addr)); 1217 if (ifa->ifa_broadaddr != NULL) 1218 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1219 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1220 sizeof(struct in6_addr)); 1221 if (ifa->ifa_dstaddr != NULL) 1222 memcpy(&n->peer, &((struct sockaddr_in6 *) 1223 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1224 sizeof(struct in6_addr)); 1225 n->ifindex = ((struct sockaddr_in6 *) 1226 ifa->ifa_addr)->sin6_scope_id; 1227 } 1228 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1229 err(1, "ifa_load: strdup"); 1230 n->next = NULL; 1231 n->tail = n; 1232 if (h == NULL) 1233 h = n; 1234 else { 1235 h->tail->next = n; 1236 h->tail = n; 1237 } 1238 } 1239 1240 iftab = h; 1241 freeifaddrs(ifap); 1242} 1243 1244int 1245get_socket_domain(void) 1246{ 1247 int sdom; 1248 1249 sdom = AF_UNSPEC; 1250#ifdef WITH_INET6 1251 if (sdom == AF_UNSPEC && feature_present("inet6")) 1252 sdom = AF_INET6; 1253#endif 1254#ifdef WITH_INET 1255 if (sdom == AF_UNSPEC && feature_present("inet")) 1256 sdom = AF_INET; 1257#endif 1258 if (sdom == AF_UNSPEC) 1259 sdom = AF_LINK; 1260 1261 return (sdom); 1262} 1263 1264struct node_host * 1265ifa_exists(const char *ifa_name) 1266{ 1267 struct node_host *n; 1268 struct ifgroupreq ifgr; 1269 int s; 1270 1271 if (iftab == NULL) 1272 ifa_load(); 1273 1274 /* check wether this is a group */ 1275 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1276 err(1, "socket"); 1277 bzero(&ifgr, sizeof(ifgr)); 1278 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1279 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == 0) { 1280 /* fake a node_host */ 1281 if ((n = calloc(1, sizeof(*n))) == NULL) 1282 err(1, "calloc"); 1283 if ((n->ifname = strdup(ifa_name)) == NULL) 1284 err(1, "strdup"); 1285 close(s); 1286 return (n); 1287 } 1288 close(s); 1289 1290 for (n = iftab; n; n = n->next) { 1291 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1292 return (n); 1293 } 1294 1295 return (NULL); 1296} 1297 1298struct node_host * 1299ifa_grouplookup(const char *ifa_name, int flags) 1300{ 1301 struct ifg_req *ifg; 1302 struct ifgroupreq ifgr; 1303 int s, len; 1304 struct node_host *n, *h = NULL; 1305 1306 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1307 err(1, "socket"); 1308 bzero(&ifgr, sizeof(ifgr)); 1309 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1310 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) { 1311 close(s); 1312 return (NULL); 1313 } 1314 1315 len = ifgr.ifgr_len; 1316 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1317 err(1, "calloc"); 1318 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1319 err(1, "SIOCGIFGMEMB"); 1320 1321 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1322 ifg++) { 1323 len -= sizeof(struct ifg_req); 1324 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1325 continue; 1326 if (h == NULL) 1327 h = n; 1328 else { 1329 h->tail->next = n; 1330 h->tail = n->tail; 1331 } 1332 } 1333 free(ifgr.ifgr_groups); 1334 close(s); 1335 1336 return (h); 1337} 1338 1339struct node_host * 1340ifa_lookup(const char *ifa_name, int flags) 1341{ 1342 struct node_host *p = NULL, *h = NULL, *n = NULL; 1343 int got4 = 0, got6 = 0; 1344 const char *last_if = NULL; 1345 1346 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1347 return (h); 1348 1349 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1350 ifa_name = NULL; 1351 1352 if (iftab == NULL) 1353 ifa_load(); 1354 1355 for (p = iftab; p; p = p->next) { 1356 if (ifa_skip_if(ifa_name, p)) 1357 continue; 1358 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1359 continue; 1360 if ((flags & PFI_AFLAG_BROADCAST) && 1361 !(p->ifa_flags & IFF_BROADCAST)) 1362 continue; 1363 if ((flags & PFI_AFLAG_PEER) && 1364 !(p->ifa_flags & IFF_POINTOPOINT)) 1365 continue; 1366 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1367 continue; 1368 if (last_if == NULL || strcmp(last_if, p->ifname)) 1369 got4 = got6 = 0; 1370 last_if = p->ifname; 1371 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1372 continue; 1373 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1374 continue; 1375 if (p->af == AF_INET) 1376 got4 = 1; 1377 else 1378 got6 = 1; 1379 n = calloc(1, sizeof(struct node_host)); 1380 if (n == NULL) 1381 err(1, "address: calloc"); 1382 n->af = p->af; 1383 if (flags & PFI_AFLAG_BROADCAST) 1384 memcpy(&n->addr.v.a.addr, &p->bcast, 1385 sizeof(struct pf_addr)); 1386 else if (flags & PFI_AFLAG_PEER) 1387 memcpy(&n->addr.v.a.addr, &p->peer, 1388 sizeof(struct pf_addr)); 1389 else 1390 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1391 sizeof(struct pf_addr)); 1392 if (flags & PFI_AFLAG_NETWORK) 1393 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1394 else { 1395 if (n->af == AF_INET) { 1396 if (p->ifa_flags & IFF_LOOPBACK && 1397 p->ifa_flags & IFF_LINK1) 1398 memcpy(&n->addr.v.a.mask, 1399 &p->addr.v.a.mask, 1400 sizeof(struct pf_addr)); 1401 else 1402 set_ipmask(n, 32); 1403 } else 1404 set_ipmask(n, 128); 1405 } 1406 n->ifindex = p->ifindex; 1407 n->ifname = strdup(p->ifname); 1408 1409 n->next = NULL; 1410 n->tail = n; 1411 if (h == NULL) 1412 h = n; 1413 else { 1414 h->tail->next = n; 1415 h->tail = n; 1416 } 1417 } 1418 return (h); 1419} 1420 1421int 1422ifa_skip_if(const char *filter, struct node_host *p) 1423{ 1424 int n; 1425 1426 if (p->af != AF_INET && p->af != AF_INET6) 1427 return (1); 1428 if (filter == NULL || !*filter) 1429 return (0); 1430 if (!strcmp(p->ifname, filter)) 1431 return (0); /* exact match */ 1432 n = strlen(filter); 1433 if (n < 1 || n >= IFNAMSIZ) 1434 return (1); /* sanity check */ 1435 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1436 return (1); /* only do exact match in that case */ 1437 if (strncmp(p->ifname, filter, n)) 1438 return (1); /* prefix doesn't match */ 1439 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1440} 1441 1442 1443struct node_host * 1444host(const char *s) 1445{ 1446 struct node_host *h = NULL; 1447 int mask, v4mask, v6mask, cont = 1; 1448 char *p, *q, *ps; 1449 1450 if ((p = strrchr(s, '/')) != NULL) { 1451 mask = strtol(p+1, &q, 0); 1452 if (!q || *q || mask > 128 || q == (p+1)) { 1453 fprintf(stderr, "invalid netmask '%s'\n", p); 1454 return (NULL); 1455 } 1456 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1457 err(1, "host: malloc"); 1458 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1459 v4mask = v6mask = mask; 1460 } else { 1461 if ((ps = strdup(s)) == NULL) 1462 err(1, "host: strdup"); 1463 v4mask = 32; 1464 v6mask = 128; 1465 mask = -1; 1466 } 1467 1468 /* IPv4 address? */ 1469 if (cont && (h = host_v4(s, mask)) != NULL) 1470 cont = 0; 1471 1472 /* IPv6 address? */ 1473 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1474 cont = 0; 1475 1476 /* interface with this name exists? */ 1477 /* expensive with thousands of interfaces - prioritze IPv4/6 check */ 1478 if (cont && (h = host_if(ps, mask)) != NULL) 1479 cont = 0; 1480 1481 /* dns lookup */ 1482 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1483 cont = 0; 1484 free(ps); 1485 1486 if (h == NULL || cont == 1) { 1487 fprintf(stderr, "no IP address found for %s\n", s); 1488 return (NULL); 1489 } 1490 return (h); 1491} 1492 1493struct node_host * 1494host_if(const char *s, int mask) 1495{ 1496 struct node_host *n, *h = NULL; 1497 char *p, *ps; 1498 int flags = 0; 1499 1500 if ((ps = strdup(s)) == NULL) 1501 err(1, "host_if: strdup"); 1502 while ((p = strrchr(ps, ':')) != NULL) { 1503 if (!strcmp(p+1, "network")) 1504 flags |= PFI_AFLAG_NETWORK; 1505 else if (!strcmp(p+1, "broadcast")) 1506 flags |= PFI_AFLAG_BROADCAST; 1507 else if (!strcmp(p+1, "peer")) 1508 flags |= PFI_AFLAG_PEER; 1509 else if (!strcmp(p+1, "0")) 1510 flags |= PFI_AFLAG_NOALIAS; 1511 else { 1512 free(ps); 1513 return (NULL); 1514 } 1515 *p = '\0'; 1516 } 1517 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1518 fprintf(stderr, "illegal combination of interface modifiers\n"); 1519 free(ps); 1520 return (NULL); 1521 } 1522 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1523 fprintf(stderr, "network or broadcast lookup, but " 1524 "extra netmask given\n"); 1525 free(ps); 1526 return (NULL); 1527 } 1528 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1529 /* interface with this name exists */ 1530 h = ifa_lookup(ps, flags); 1531 for (n = h; n != NULL && mask > -1; n = n->next) 1532 set_ipmask(n, mask); 1533 } 1534 1535 free(ps); 1536 return (h); 1537} 1538 1539struct node_host * 1540host_v4(const char *s, int mask) 1541{ 1542 struct node_host *h = NULL; 1543 struct in_addr ina; 1544 int bits = 32; 1545 1546 memset(&ina, 0, sizeof(struct in_addr)); 1547 if (strrchr(s, '/') != NULL) { 1548 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1549 return (NULL); 1550 } else { 1551 if (inet_pton(AF_INET, s, &ina) != 1) 1552 return (NULL); 1553 } 1554 1555 h = calloc(1, sizeof(struct node_host)); 1556 if (h == NULL) 1557 err(1, "address: calloc"); 1558 h->ifname = NULL; 1559 h->af = AF_INET; 1560 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1561 set_ipmask(h, bits); 1562 h->next = NULL; 1563 h->tail = h; 1564 1565 return (h); 1566} 1567 1568struct node_host * 1569host_v6(const char *s, int mask) 1570{ 1571 struct addrinfo hints, *res; 1572 struct node_host *h = NULL; 1573 1574 memset(&hints, 0, sizeof(hints)); 1575 hints.ai_family = AF_INET6; 1576 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1577 hints.ai_flags = AI_NUMERICHOST; 1578 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1579 h = calloc(1, sizeof(struct node_host)); 1580 if (h == NULL) 1581 err(1, "address: calloc"); 1582 h->ifname = NULL; 1583 h->af = AF_INET6; 1584 memcpy(&h->addr.v.a.addr, 1585 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1586 sizeof(h->addr.v.a.addr)); 1587 h->ifindex = 1588 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1589 set_ipmask(h, mask); 1590 freeaddrinfo(res); 1591 h->next = NULL; 1592 h->tail = h; 1593 } 1594 1595 return (h); 1596} 1597 1598struct node_host * 1599host_dns(const char *s, int v4mask, int v6mask) 1600{ 1601 struct addrinfo hints, *res0, *res; 1602 struct node_host *n, *h = NULL; 1603 int error, noalias = 0; 1604 int got4 = 0, got6 = 0; 1605 char *p, *ps; 1606 1607 if ((ps = strdup(s)) == NULL) 1608 err(1, "host_dns: strdup"); 1609 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1610 noalias = 1; 1611 *p = '\0'; 1612 } 1613 memset(&hints, 0, sizeof(hints)); 1614 hints.ai_family = PF_UNSPEC; 1615 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1616 error = getaddrinfo(ps, NULL, &hints, &res0); 1617 if (error) { 1618 free(ps); 1619 return (h); 1620 } 1621 1622 for (res = res0; res; res = res->ai_next) { 1623 if (res->ai_family != AF_INET && 1624 res->ai_family != AF_INET6) 1625 continue; 1626 if (noalias) { 1627 if (res->ai_family == AF_INET) { 1628 if (got4) 1629 continue; 1630 got4 = 1; 1631 } else { 1632 if (got6) 1633 continue; 1634 got6 = 1; 1635 } 1636 } 1637 n = calloc(1, sizeof(struct node_host)); 1638 if (n == NULL) 1639 err(1, "host_dns: calloc"); 1640 n->ifname = NULL; 1641 n->af = res->ai_family; 1642 if (res->ai_family == AF_INET) { 1643 memcpy(&n->addr.v.a.addr, 1644 &((struct sockaddr_in *) 1645 res->ai_addr)->sin_addr.s_addr, 1646 sizeof(struct in_addr)); 1647 set_ipmask(n, v4mask); 1648 } else { 1649 memcpy(&n->addr.v.a.addr, 1650 &((struct sockaddr_in6 *) 1651 res->ai_addr)->sin6_addr.s6_addr, 1652 sizeof(struct in6_addr)); 1653 n->ifindex = 1654 ((struct sockaddr_in6 *) 1655 res->ai_addr)->sin6_scope_id; 1656 set_ipmask(n, v6mask); 1657 } 1658 n->next = NULL; 1659 n->tail = n; 1660 if (h == NULL) 1661 h = n; 1662 else { 1663 h->tail->next = n; 1664 h->tail = n; 1665 } 1666 } 1667 freeaddrinfo(res0); 1668 free(ps); 1669 1670 return (h); 1671} 1672 1673/* 1674 * convert a hostname to a list of addresses and put them in the given buffer. 1675 * test: 1676 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1677 */ 1678int 1679append_addr(struct pfr_buffer *b, char *s, int test) 1680{ 1681 char *r; 1682 struct node_host *h, *n; 1683 int rv, not = 0; 1684 1685 for (r = s; *r == '!'; r++) 1686 not = !not; 1687 if ((n = host(r)) == NULL) { 1688 errno = 0; 1689 return (-1); 1690 } 1691 rv = append_addr_host(b, n, test, not); 1692 do { 1693 h = n; 1694 n = n->next; 1695 free(h); 1696 } while (n != NULL); 1697 return (rv); 1698} 1699 1700/* 1701 * same as previous function, but with a pre-parsed input and the ability 1702 * to "negate" the result. Does not free the node_host list. 1703 * not: 1704 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1705 */ 1706int 1707append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1708{ 1709 int bits; 1710 struct pfr_addr addr; 1711 1712 do { 1713 bzero(&addr, sizeof(addr)); 1714 addr.pfra_not = n->not ^ not; 1715 addr.pfra_af = n->af; 1716 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1717 switch (n->af) { 1718 case AF_INET: 1719 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1720 bits = 32; 1721 break; 1722 case AF_INET6: 1723 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1724 sizeof(struct in6_addr)); 1725 bits = 128; 1726 break; 1727 default: 1728 errno = EINVAL; 1729 return (-1); 1730 } 1731 if ((test && (not || addr.pfra_net != bits)) || 1732 addr.pfra_net > bits) { 1733 errno = EINVAL; 1734 return (-1); 1735 } 1736 if (pfr_buf_add(b, &addr)) 1737 return (-1); 1738 } while ((n = n->next) != NULL); 1739 1740 return (0); 1741} 1742 1743int 1744pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1745{ 1746 struct pfioc_trans_e trans; 1747 1748 bzero(&trans, sizeof(trans)); 1749 trans.rs_num = rs_num; 1750 if (strlcpy(trans.anchor, anchor, 1751 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1752 errx(1, "pfctl_add_trans: strlcpy"); 1753 1754 return pfr_buf_add(buf, &trans); 1755} 1756 1757u_int32_t 1758pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1759{ 1760 struct pfioc_trans_e *p; 1761 1762 PFRB_FOREACH(p, buf) 1763 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1764 return (p->ticket); 1765 errx(1, "pfctl_get_ticket: assertion failed"); 1766} 1767 1768int 1769pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1770{ 1771 struct pfioc_trans trans; 1772 1773 bzero(&trans, sizeof(trans)); 1774 trans.size = buf->pfrb_size - from; 1775 trans.esize = sizeof(struct pfioc_trans_e); 1776 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1777 return ioctl(dev, cmd, &trans); 1778} 1779