pfctl_parser.c revision 287222
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: head/sbin/pfctl/pfctl_parser.c 287222 2015-08-27 21:27:47Z kp $"); 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 65void print_op (u_int8_t, const char *, const char *); 66void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int); 67void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned); 68void print_flags (u_int8_t); 69void print_fromto(struct pf_rule_addr *, pf_osfp_t, 70 struct pf_rule_addr *, u_int8_t, u_int8_t, int, int); 71int ifa_skip_if(const char *filter, struct node_host *p); 72 73struct node_host *ifa_grouplookup(const char *, int); 74struct node_host *host_if(const char *, int); 75struct node_host *host_v4(const char *, int); 76struct node_host *host_v6(const char *, int); 77struct node_host *host_dns(const char *, int, int); 78 79const char *tcpflags = "FSRPAUEW"; 80 81static 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 109static 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 138static 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 171static 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 186const 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 210const struct icmptypeent * 211geticmptypebynumber(u_int8_t type, sa_family_t af) 212{ 213 unsigned int i; 214 215 if (af != AF_INET6) { 216 for (i=0; i < (sizeof (icmp_type) / sizeof(icmp_type[0])); 217 i++) { 218 if (type == icmp_type[i].type) 219 return (&icmp_type[i]); 220 } 221 } else { 222 for (i=0; i < (sizeof (icmp6_type) / 223 sizeof(icmp6_type[0])); 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 < (sizeof (icmp_type) / sizeof(icmp_type[0])); 238 i++) { 239 if (!strcmp(w, icmp_type[i].name)) 240 return (&icmp_type[i]); 241 } 242 } else { 243 for (i=0; i < (sizeof (icmp6_type) / 244 sizeof(icmp6_type[0])); i++) { 245 if (!strcmp(w, icmp6_type[i].name)) 246 return (&icmp6_type[i]); 247 } 248 } 249 return (NULL); 250} 251 252const struct icmpcodeent * 253geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 254{ 255 unsigned int i; 256 257 if (af != AF_INET6) { 258 for (i=0; i < (sizeof (icmp_code) / sizeof(icmp_code[0])); 259 i++) { 260 if (type == icmp_code[i].type && 261 code == icmp_code[i].code) 262 return (&icmp_code[i]); 263 } 264 } else { 265 for (i=0; i < (sizeof (icmp6_code) / 266 sizeof(icmp6_code[0])); i++) { 267 if (type == icmp6_code[i].type && 268 code == icmp6_code[i].code) 269 return (&icmp6_code[i]); 270 } 271 } 272 return (NULL); 273} 274 275const struct icmpcodeent * 276geticmpcodebyname(u_long type, char *w, sa_family_t af) 277{ 278 unsigned int i; 279 280 if (af != AF_INET6) { 281 for (i=0; i < (sizeof (icmp_code) / sizeof(icmp_code[0])); 282 i++) { 283 if (type == icmp_code[i].type && 284 !strcmp(w, icmp_code[i].name)) 285 return (&icmp_code[i]); 286 } 287 } else { 288 for (i=0; i < (sizeof (icmp6_code) / 289 sizeof(icmp6_code[0])); i++) { 290 if (type == icmp6_code[i].type && 291 !strcmp(w, icmp6_code[i].name)) 292 return (&icmp6_code[i]); 293 } 294 } 295 return (NULL); 296} 297 298void 299print_op(u_int8_t op, const char *a1, const char *a2) 300{ 301 if (op == PF_OP_IRG) 302 printf(" %s >< %s", a1, a2); 303 else if (op == PF_OP_XRG) 304 printf(" %s <> %s", a1, a2); 305 else if (op == PF_OP_EQ) 306 printf(" = %s", a1); 307 else if (op == PF_OP_NE) 308 printf(" != %s", a1); 309 else if (op == PF_OP_LT) 310 printf(" < %s", a1); 311 else if (op == PF_OP_LE) 312 printf(" <= %s", a1); 313 else if (op == PF_OP_GT) 314 printf(" > %s", a1); 315 else if (op == PF_OP_GE) 316 printf(" >= %s", a1); 317 else if (op == PF_OP_RRG) 318 printf(" %s:%s", a1, a2); 319} 320 321void 322print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric) 323{ 324 char a1[6], a2[6]; 325 struct servent *s; 326 327 if (!numeric) 328 s = getservbyport(p1, proto); 329 else 330 s = NULL; 331 p1 = ntohs(p1); 332 p2 = ntohs(p2); 333 snprintf(a1, sizeof(a1), "%u", p1); 334 snprintf(a2, sizeof(a2), "%u", p2); 335 printf(" port"); 336 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 337 print_op(op, s->s_name, a2); 338 else 339 print_op(op, a1, a2); 340} 341 342void 343print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 344{ 345 char a1[11], a2[11]; 346 347 snprintf(a1, sizeof(a1), "%u", u1); 348 snprintf(a2, sizeof(a2), "%u", u2); 349 printf(" %s", t); 350 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 351 print_op(op, "unknown", a2); 352 else 353 print_op(op, a1, a2); 354} 355 356void 357print_flags(u_int8_t f) 358{ 359 int i; 360 361 for (i = 0; tcpflags[i]; ++i) 362 if (f & (1 << i)) 363 printf("%c", tcpflags[i]); 364} 365 366void 367print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 368 sa_family_t af, u_int8_t proto, int verbose, int numeric) 369{ 370 char buf[PF_OSFP_LEN*3]; 371 if (src->addr.type == PF_ADDR_ADDRMASK && 372 dst->addr.type == PF_ADDR_ADDRMASK && 373 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 374 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 375 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 376 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 377 !src->neg && !dst->neg && 378 !src->port_op && !dst->port_op && 379 osfp == PF_OSFP_ANY) 380 printf(" all"); 381 else { 382 printf(" from "); 383 if (src->neg) 384 printf("! "); 385 print_addr(&src->addr, af, verbose); 386 if (src->port_op) 387 print_port(src->port_op, src->port[0], 388 src->port[1], 389 proto == IPPROTO_TCP ? "tcp" : "udp", 390 numeric); 391 if (osfp != PF_OSFP_ANY) 392 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 393 sizeof(buf))); 394 395 printf(" to "); 396 if (dst->neg) 397 printf("! "); 398 print_addr(&dst->addr, af, verbose); 399 if (dst->port_op) 400 print_port(dst->port_op, dst->port[0], 401 dst->port[1], 402 proto == IPPROTO_TCP ? "tcp" : "udp", 403 numeric); 404 } 405} 406 407void 408print_pool(struct pf_pool *pool, u_int16_t p1, u_int16_t p2, 409 sa_family_t af, int id) 410{ 411 struct pf_pooladdr *pooladdr; 412 413 if ((TAILQ_FIRST(&pool->list) != NULL) && 414 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 415 printf("{ "); 416 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 417 switch (id) { 418 case PF_NAT: 419 case PF_RDR: 420 case PF_BINAT: 421 print_addr(&pooladdr->addr, af, 0); 422 break; 423 case PF_PASS: 424 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 425 printf("%s", pooladdr->ifname); 426 else { 427 printf("(%s ", pooladdr->ifname); 428 print_addr(&pooladdr->addr, af, 0); 429 printf(")"); 430 } 431 break; 432 default: 433 break; 434 } 435 if (TAILQ_NEXT(pooladdr, entries) != NULL) 436 printf(", "); 437 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 438 printf(" }"); 439 } 440 switch (id) { 441 case PF_NAT: 442 if ((p1 != PF_NAT_PROXY_PORT_LOW || 443 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 444 if (p1 == p2) 445 printf(" port %u", p1); 446 else 447 printf(" port %u:%u", p1, p2); 448 } 449 break; 450 case PF_RDR: 451 if (p1) { 452 printf(" port %u", p1); 453 if (p2 && (p2 != p1)) 454 printf(":%u", p2); 455 } 456 break; 457 default: 458 break; 459 } 460 switch (pool->opts & PF_POOL_TYPEMASK) { 461 case PF_POOL_NONE: 462 break; 463 case PF_POOL_BITMASK: 464 printf(" bitmask"); 465 break; 466 case PF_POOL_RANDOM: 467 printf(" random"); 468 break; 469 case PF_POOL_SRCHASH: 470 printf(" source-hash 0x%08x%08x%08x%08x", 471 pool->key.key32[0], pool->key.key32[1], 472 pool->key.key32[2], pool->key.key32[3]); 473 break; 474 case PF_POOL_ROUNDROBIN: 475 printf(" round-robin"); 476 break; 477 } 478 if (pool->opts & PF_POOL_STICKYADDR) 479 printf(" sticky-address"); 480 if (id == PF_NAT && p1 == 0 && p2 == 0) 481 printf(" static-port"); 482} 483 484const char *pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 485const char *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 486const char *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 487const char *pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 488 489void 490print_status(struct pf_status *s, int opts) 491{ 492 char statline[80], *running; 493 time_t runtime; 494 int i; 495 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 496 static const char hex[] = "0123456789abcdef"; 497 498 runtime = time(NULL) - s->since; 499 running = s->running ? "Enabled" : "Disabled"; 500 501 if (s->since) { 502 unsigned int sec, min, hrs, day = runtime; 503 504 sec = day % 60; 505 day /= 60; 506 min = day % 60; 507 day /= 60; 508 hrs = day % 24; 509 day /= 24; 510 snprintf(statline, sizeof(statline), 511 "Status: %s for %u days %.2u:%.2u:%.2u", 512 running, day, hrs, min, sec); 513 } else 514 snprintf(statline, sizeof(statline), "Status: %s", running); 515 printf("%-44s", statline); 516 switch (s->debug) { 517 case PF_DEBUG_NONE: 518 printf("%15s\n\n", "Debug: None"); 519 break; 520 case PF_DEBUG_URGENT: 521 printf("%15s\n\n", "Debug: Urgent"); 522 break; 523 case PF_DEBUG_MISC: 524 printf("%15s\n\n", "Debug: Misc"); 525 break; 526 case PF_DEBUG_NOISY: 527 printf("%15s\n\n", "Debug: Loud"); 528 break; 529 } 530 531 if (opts & PF_OPT_VERBOSE) { 532 printf("Hostid: 0x%08x\n", ntohl(s->hostid)); 533 534 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 535 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 536 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 537 } 538 buf[i + i] = '\0'; 539 printf("Checksum: 0x%s\n\n", buf); 540 } 541 542 if (s->ifname[0] != 0) { 543 printf("Interface Stats for %-16s %5s %16s\n", 544 s->ifname, "IPv4", "IPv6"); 545 printf(" %-25s %14llu %16llu\n", "Bytes In", 546 (unsigned long long)s->bcounters[0][0], 547 (unsigned long long)s->bcounters[1][0]); 548 printf(" %-25s %14llu %16llu\n", "Bytes Out", 549 (unsigned long long)s->bcounters[0][1], 550 (unsigned long long)s->bcounters[1][1]); 551 printf(" Packets In\n"); 552 printf(" %-23s %14llu %16llu\n", "Passed", 553 (unsigned long long)s->pcounters[0][0][PF_PASS], 554 (unsigned long long)s->pcounters[1][0][PF_PASS]); 555 printf(" %-23s %14llu %16llu\n", "Blocked", 556 (unsigned long long)s->pcounters[0][0][PF_DROP], 557 (unsigned long long)s->pcounters[1][0][PF_DROP]); 558 printf(" Packets Out\n"); 559 printf(" %-23s %14llu %16llu\n", "Passed", 560 (unsigned long long)s->pcounters[0][1][PF_PASS], 561 (unsigned long long)s->pcounters[1][1][PF_PASS]); 562 printf(" %-23s %14llu %16llu\n\n", "Blocked", 563 (unsigned long long)s->pcounters[0][1][PF_DROP], 564 (unsigned long long)s->pcounters[1][1][PF_DROP]); 565 } 566 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 567 printf(" %-25s %14u %14s\n", "current entries", s->states, ""); 568 for (i = 0; i < FCNT_MAX; i++) { 569 printf(" %-25s %14llu ", pf_fcounters[i], 570 (unsigned long long)s->fcounters[i]); 571 if (runtime > 0) 572 printf("%14.1f/s\n", 573 (double)s->fcounters[i] / (double)runtime); 574 else 575 printf("%14s\n", ""); 576 } 577 if (opts & PF_OPT_VERBOSE) { 578 printf("Source Tracking Table\n"); 579 printf(" %-25s %14u %14s\n", "current entries", 580 s->src_nodes, ""); 581 for (i = 0; i < SCNT_MAX; i++) { 582 printf(" %-25s %14lld ", pf_scounters[i], 583#ifdef __FreeBSD__ 584 (long long)s->scounters[i]); 585#else 586 s->scounters[i]); 587#endif 588 if (runtime > 0) 589 printf("%14.1f/s\n", 590 (double)s->scounters[i] / (double)runtime); 591 else 592 printf("%14s\n", ""); 593 } 594 } 595 printf("Counters\n"); 596 for (i = 0; i < PFRES_MAX; i++) { 597 printf(" %-25s %14llu ", pf_reasons[i], 598 (unsigned long long)s->counters[i]); 599 if (runtime > 0) 600 printf("%14.1f/s\n", 601 (double)s->counters[i] / (double)runtime); 602 else 603 printf("%14s\n", ""); 604 } 605 if (opts & PF_OPT_VERBOSE) { 606 printf("Limit Counters\n"); 607 for (i = 0; i < LCNT_MAX; i++) { 608 printf(" %-25s %14lld ", pf_lcounters[i], 609#ifdef __FreeBSD__ 610 (unsigned long long)s->lcounters[i]); 611#else 612 s->lcounters[i]); 613#endif 614 if (runtime > 0) 615 printf("%14.1f/s\n", 616 (double)s->lcounters[i] / (double)runtime); 617 else 618 printf("%14s\n", ""); 619 } 620 } 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->keep_state && r->action == PF_PASS && !anchor_call[0]) 853 printf(" no state"); 854 else if (r->keep_state == PF_STATE_NORMAL) 855 printf(" keep state"); 856 else if (r->keep_state == PF_STATE_MODULATE) 857 printf(" modulate state"); 858 else if (r->keep_state == PF_STATE_SYNPROXY) 859 printf(" synproxy state"); 860 if (r->prob) { 861 char buf[20]; 862 863 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 864 for (i = strlen(buf)-1; i > 0; i--) { 865 if (buf[i] == '0') 866 buf[i] = '\0'; 867 else { 868 if (buf[i] == '.') 869 buf[i] = '\0'; 870 break; 871 } 872 } 873 printf(" probability %s%%", buf); 874 } 875 opts = 0; 876 if (r->max_states || r->max_src_nodes || r->max_src_states) 877 opts = 1; 878 if (r->rule_flag & PFRULE_NOSYNC) 879 opts = 1; 880 if (r->rule_flag & PFRULE_SRCTRACK) 881 opts = 1; 882 if (r->rule_flag & PFRULE_IFBOUND) 883 opts = 1; 884 if (r->rule_flag & PFRULE_STATESLOPPY) 885 opts = 1; 886 for (i = 0; !opts && i < PFTM_MAX; ++i) 887 if (r->timeout[i]) 888 opts = 1; 889 if (opts) { 890 printf(" ("); 891 if (r->max_states) { 892 printf("max %u", r->max_states); 893 opts = 0; 894 } 895 if (r->rule_flag & PFRULE_NOSYNC) { 896 if (!opts) 897 printf(", "); 898 printf("no-sync"); 899 opts = 0; 900 } 901 if (r->rule_flag & PFRULE_SRCTRACK) { 902 if (!opts) 903 printf(", "); 904 printf("source-track"); 905 if (r->rule_flag & PFRULE_RULESRCTRACK) 906 printf(" rule"); 907 else 908 printf(" global"); 909 opts = 0; 910 } 911 if (r->max_src_states) { 912 if (!opts) 913 printf(", "); 914 printf("max-src-states %u", r->max_src_states); 915 opts = 0; 916 } 917 if (r->max_src_conn) { 918 if (!opts) 919 printf(", "); 920 printf("max-src-conn %u", r->max_src_conn); 921 opts = 0; 922 } 923 if (r->max_src_conn_rate.limit) { 924 if (!opts) 925 printf(", "); 926 printf("max-src-conn-rate %u/%u", 927 r->max_src_conn_rate.limit, 928 r->max_src_conn_rate.seconds); 929 opts = 0; 930 } 931 if (r->max_src_nodes) { 932 if (!opts) 933 printf(", "); 934 printf("max-src-nodes %u", r->max_src_nodes); 935 opts = 0; 936 } 937 if (r->overload_tblname[0]) { 938 if (!opts) 939 printf(", "); 940 printf("overload <%s>", r->overload_tblname); 941 if (r->flush) 942 printf(" flush"); 943 if (r->flush & PF_FLUSH_GLOBAL) 944 printf(" global"); 945 } 946 if (r->rule_flag & PFRULE_IFBOUND) { 947 if (!opts) 948 printf(", "); 949 printf("if-bound"); 950 opts = 0; 951 } 952 if (r->rule_flag & PFRULE_STATESLOPPY) { 953 if (!opts) 954 printf(", "); 955 printf("sloppy"); 956 opts = 0; 957 } 958 for (i = 0; i < PFTM_MAX; ++i) 959 if (r->timeout[i]) { 960 int j; 961 962 if (!opts) 963 printf(", "); 964 opts = 0; 965 for (j = 0; pf_timeouts[j].name != NULL; 966 ++j) 967 if (pf_timeouts[j].timeout == i) 968 break; 969 printf("%s %u", pf_timeouts[j].name == NULL ? 970 "inv.timeout" : pf_timeouts[j].name, 971 r->timeout[i]); 972 } 973 printf(")"); 974 } 975 if (r->rule_flag & PFRULE_FRAGMENT) 976 printf(" fragment"); 977 if (r->rule_flag & PFRULE_NODF) 978 printf(" no-df"); 979 if (r->rule_flag & PFRULE_RANDOMID) 980 printf(" random-id"); 981 if (r->min_ttl) 982 printf(" min-ttl %d", r->min_ttl); 983 if (r->max_mss) 984 printf(" max-mss %d", r->max_mss); 985 if (r->rule_flag & PFRULE_SET_TOS) 986 printf(" set-tos 0x%2.2x", r->set_tos); 987 if (r->allow_opts) 988 printf(" allow-opts"); 989 if (r->action == PF_SCRUB) { 990 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 991 printf(" reassemble tcp"); 992 993 printf(" fragment reassemble"); 994 } 995 if (r->label[0]) 996 printf(" label \"%s\"", r->label); 997 if (r->qname[0] && r->pqname[0]) 998 printf(" queue(%s, %s)", r->qname, r->pqname); 999 else if (r->qname[0]) 1000 printf(" queue %s", r->qname); 1001 if (r->tagname[0]) 1002 printf(" tag %s", r->tagname); 1003 if (r->match_tagname[0]) { 1004 if (r->match_tag_not) 1005 printf(" !"); 1006 printf(" tagged %s", r->match_tagname); 1007 } 1008 if (r->rtableid != -1) 1009 printf(" rtable %u", r->rtableid); 1010 if (r->divert.port) { 1011#ifdef __FreeBSD__ 1012 printf(" divert-to %u", ntohs(r->divert.port)); 1013#else 1014 if (PF_AZERO(&r->divert.addr, r->af)) { 1015 printf(" divert-reply"); 1016 } else { 1017 /* XXX cut&paste from print_addr */ 1018 char buf[48]; 1019 1020 printf(" divert-to "); 1021 if (inet_ntop(r->af, &r->divert.addr, buf, 1022 sizeof(buf)) == NULL) 1023 printf("?"); 1024 else 1025 printf("%s", buf); 1026 printf(" port %u", ntohs(r->divert.port)); 1027 } 1028#endif 1029 } 1030 if (!anchor_call[0] && (r->action == PF_NAT || 1031 r->action == PF_BINAT || r->action == PF_RDR)) { 1032 printf(" -> "); 1033 print_pool(&r->rpool, r->rpool.proxy_port[0], 1034 r->rpool.proxy_port[1], r->af, r->action); 1035 } 1036} 1037 1038void 1039print_tabledef(const char *name, int flags, int addrs, 1040 struct node_tinithead *nodes) 1041{ 1042 struct node_tinit *ti, *nti; 1043 struct node_host *h; 1044 1045 printf("table <%s>", name); 1046 if (flags & PFR_TFLAG_CONST) 1047 printf(" const"); 1048 if (flags & PFR_TFLAG_PERSIST) 1049 printf(" persist"); 1050 if (flags & PFR_TFLAG_COUNTERS) 1051 printf(" counters"); 1052 SIMPLEQ_FOREACH(ti, nodes, entries) { 1053 if (ti->file) { 1054 printf(" file \"%s\"", ti->file); 1055 continue; 1056 } 1057 printf(" {"); 1058 for (;;) { 1059 for (h = ti->host; h != NULL; h = h->next) { 1060 printf(h->not ? " !" : " "); 1061 print_addr(&h->addr, h->af, 0); 1062 } 1063 nti = SIMPLEQ_NEXT(ti, entries); 1064 if (nti != NULL && nti->file == NULL) 1065 ti = nti; /* merge lists */ 1066 else 1067 break; 1068 } 1069 printf(" }"); 1070 } 1071 if (addrs && SIMPLEQ_EMPTY(nodes)) 1072 printf(" { }"); 1073 printf("\n"); 1074} 1075 1076int 1077parse_flags(char *s) 1078{ 1079 char *p, *q; 1080 u_int8_t f = 0; 1081 1082 for (p = s; *p; p++) { 1083 if ((q = strchr(tcpflags, *p)) == NULL) 1084 return -1; 1085 else 1086 f |= 1 << (q - tcpflags); 1087 } 1088 return (f ? f : PF_TH_ALL); 1089} 1090 1091void 1092set_ipmask(struct node_host *h, u_int8_t b) 1093{ 1094 struct pf_addr *m, *n; 1095 int i, j = 0; 1096 1097 m = &h->addr.v.a.mask; 1098 memset(m, 0, sizeof(*m)); 1099 1100 while (b >= 32) { 1101 m->addr32[j++] = 0xffffffff; 1102 b -= 32; 1103 } 1104 for (i = 31; i > 31-b; --i) 1105 m->addr32[j] |= (1 << i); 1106 if (b) 1107 m->addr32[j] = htonl(m->addr32[j]); 1108 1109 /* Mask off bits of the address that will never be used. */ 1110 n = &h->addr.v.a.addr; 1111 if (h->addr.type == PF_ADDR_ADDRMASK) 1112 for (i = 0; i < 4; i++) 1113 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1114} 1115 1116int 1117check_netmask(struct node_host *h, sa_family_t af) 1118{ 1119 struct node_host *n = NULL; 1120 struct pf_addr *m; 1121 1122 for (n = h; n != NULL; n = n->next) { 1123 if (h->addr.type == PF_ADDR_TABLE) 1124 continue; 1125 m = &h->addr.v.a.mask; 1126 /* fix up netmask for dynaddr */ 1127 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1128 unmask(m, AF_INET6) > 32) 1129 set_ipmask(n, 32); 1130 /* netmasks > 32 bit are invalid on v4 */ 1131 if (af == AF_INET && 1132 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1133 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1134 unmask(m, AF_INET6)); 1135 return (1); 1136 } 1137 } 1138 return (0); 1139} 1140 1141/* interface lookup routines */ 1142 1143struct node_host *iftab; 1144 1145void 1146ifa_load(void) 1147{ 1148 struct ifaddrs *ifap, *ifa; 1149 struct node_host *n = NULL, *h = NULL; 1150 1151 if (getifaddrs(&ifap) < 0) 1152 err(1, "getifaddrs"); 1153 1154 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1155 if (!(ifa->ifa_addr->sa_family == AF_INET || 1156 ifa->ifa_addr->sa_family == AF_INET6 || 1157 ifa->ifa_addr->sa_family == AF_LINK)) 1158 continue; 1159 n = calloc(1, sizeof(struct node_host)); 1160 if (n == NULL) 1161 err(1, "address: calloc"); 1162 n->af = ifa->ifa_addr->sa_family; 1163 n->ifa_flags = ifa->ifa_flags; 1164#ifdef __KAME__ 1165 if (n->af == AF_INET6 && 1166 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1167 ifa->ifa_addr)->sin6_addr) && 1168 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1169 0) { 1170 struct sockaddr_in6 *sin6; 1171 1172 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1173 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1174 sin6->sin6_addr.s6_addr[3]; 1175 sin6->sin6_addr.s6_addr[2] = 0; 1176 sin6->sin6_addr.s6_addr[3] = 0; 1177 } 1178#endif 1179 n->ifindex = 0; 1180 if (n->af == AF_INET) { 1181 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1182 ifa->ifa_addr)->sin_addr.s_addr, 1183 sizeof(struct in_addr)); 1184 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1185 ifa->ifa_netmask)->sin_addr.s_addr, 1186 sizeof(struct in_addr)); 1187 if (ifa->ifa_broadaddr != NULL) 1188 memcpy(&n->bcast, &((struct sockaddr_in *) 1189 ifa->ifa_broadaddr)->sin_addr.s_addr, 1190 sizeof(struct in_addr)); 1191 if (ifa->ifa_dstaddr != NULL) 1192 memcpy(&n->peer, &((struct sockaddr_in *) 1193 ifa->ifa_dstaddr)->sin_addr.s_addr, 1194 sizeof(struct in_addr)); 1195 } else if (n->af == AF_INET6) { 1196 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1197 ifa->ifa_addr)->sin6_addr.s6_addr, 1198 sizeof(struct in6_addr)); 1199 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1200 ifa->ifa_netmask)->sin6_addr.s6_addr, 1201 sizeof(struct in6_addr)); 1202 if (ifa->ifa_broadaddr != NULL) 1203 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1204 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1205 sizeof(struct in6_addr)); 1206 if (ifa->ifa_dstaddr != NULL) 1207 memcpy(&n->peer, &((struct sockaddr_in6 *) 1208 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1209 sizeof(struct in6_addr)); 1210 n->ifindex = ((struct sockaddr_in6 *) 1211 ifa->ifa_addr)->sin6_scope_id; 1212 } 1213 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1214 err(1, "ifa_load: strdup"); 1215 n->next = NULL; 1216 n->tail = n; 1217 if (h == NULL) 1218 h = n; 1219 else { 1220 h->tail->next = n; 1221 h->tail = n; 1222 } 1223 } 1224 1225 iftab = h; 1226 freeifaddrs(ifap); 1227} 1228 1229int 1230get_socket_domain(void) 1231{ 1232 int sdom; 1233 1234 sdom = AF_UNSPEC; 1235#ifdef WITH_INET6 1236 if (sdom == AF_UNSPEC && feature_present("inet6")) 1237 sdom = AF_INET6; 1238#endif 1239#ifdef WITH_INET 1240 if (sdom == AF_UNSPEC && feature_present("inet")) 1241 sdom = AF_INET; 1242#endif 1243 if (sdom == AF_UNSPEC) 1244 sdom = AF_LINK; 1245 1246 return (sdom); 1247} 1248 1249struct node_host * 1250ifa_exists(const char *ifa_name) 1251{ 1252 struct node_host *n; 1253 struct ifgroupreq ifgr; 1254 int s; 1255 1256 if (iftab == NULL) 1257 ifa_load(); 1258 1259 /* check wether this is a group */ 1260 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1261 err(1, "socket"); 1262 bzero(&ifgr, sizeof(ifgr)); 1263 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1264 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == 0) { 1265 /* fake a node_host */ 1266 if ((n = calloc(1, sizeof(*n))) == NULL) 1267 err(1, "calloc"); 1268 if ((n->ifname = strdup(ifa_name)) == NULL) 1269 err(1, "strdup"); 1270 close(s); 1271 return (n); 1272 } 1273 close(s); 1274 1275 for (n = iftab; n; n = n->next) { 1276 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1277 return (n); 1278 } 1279 1280 return (NULL); 1281} 1282 1283struct node_host * 1284ifa_grouplookup(const char *ifa_name, int flags) 1285{ 1286 struct ifg_req *ifg; 1287 struct ifgroupreq ifgr; 1288 int s, len; 1289 struct node_host *n, *h = NULL; 1290 1291 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1292 err(1, "socket"); 1293 bzero(&ifgr, sizeof(ifgr)); 1294 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1295 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) { 1296 close(s); 1297 return (NULL); 1298 } 1299 1300 len = ifgr.ifgr_len; 1301 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1302 err(1, "calloc"); 1303 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1304 err(1, "SIOCGIFGMEMB"); 1305 1306 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1307 ifg++) { 1308 len -= sizeof(struct ifg_req); 1309 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1310 continue; 1311 if (h == NULL) 1312 h = n; 1313 else { 1314 h->tail->next = n; 1315 h->tail = n->tail; 1316 } 1317 } 1318 free(ifgr.ifgr_groups); 1319 close(s); 1320 1321 return (h); 1322} 1323 1324struct node_host * 1325ifa_lookup(const char *ifa_name, int flags) 1326{ 1327 struct node_host *p = NULL, *h = NULL, *n = NULL; 1328 int got4 = 0, got6 = 0; 1329 const char *last_if = NULL; 1330 1331 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1332 return (h); 1333 1334 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1335 ifa_name = NULL; 1336 1337 if (iftab == NULL) 1338 ifa_load(); 1339 1340 for (p = iftab; p; p = p->next) { 1341 if (ifa_skip_if(ifa_name, p)) 1342 continue; 1343 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1344 continue; 1345 if ((flags & PFI_AFLAG_BROADCAST) && 1346 !(p->ifa_flags & IFF_BROADCAST)) 1347 continue; 1348 if ((flags & PFI_AFLAG_PEER) && 1349 !(p->ifa_flags & IFF_POINTOPOINT)) 1350 continue; 1351 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1352 continue; 1353 if (last_if == NULL || strcmp(last_if, p->ifname)) 1354 got4 = got6 = 0; 1355 last_if = p->ifname; 1356 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1357 continue; 1358 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1359 continue; 1360 if (p->af == AF_INET) 1361 got4 = 1; 1362 else 1363 got6 = 1; 1364 n = calloc(1, sizeof(struct node_host)); 1365 if (n == NULL) 1366 err(1, "address: calloc"); 1367 n->af = p->af; 1368 if (flags & PFI_AFLAG_BROADCAST) 1369 memcpy(&n->addr.v.a.addr, &p->bcast, 1370 sizeof(struct pf_addr)); 1371 else if (flags & PFI_AFLAG_PEER) 1372 memcpy(&n->addr.v.a.addr, &p->peer, 1373 sizeof(struct pf_addr)); 1374 else 1375 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1376 sizeof(struct pf_addr)); 1377 if (flags & PFI_AFLAG_NETWORK) 1378 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1379 else { 1380 if (n->af == AF_INET) { 1381 if (p->ifa_flags & IFF_LOOPBACK && 1382 p->ifa_flags & IFF_LINK1) 1383 memcpy(&n->addr.v.a.mask, 1384 &p->addr.v.a.mask, 1385 sizeof(struct pf_addr)); 1386 else 1387 set_ipmask(n, 32); 1388 } else 1389 set_ipmask(n, 128); 1390 } 1391 n->ifindex = p->ifindex; 1392 1393 n->next = NULL; 1394 n->tail = n; 1395 if (h == NULL) 1396 h = n; 1397 else { 1398 h->tail->next = n; 1399 h->tail = n; 1400 } 1401 } 1402 return (h); 1403} 1404 1405int 1406ifa_skip_if(const char *filter, struct node_host *p) 1407{ 1408 int n; 1409 1410 if (p->af != AF_INET && p->af != AF_INET6) 1411 return (1); 1412 if (filter == NULL || !*filter) 1413 return (0); 1414 if (!strcmp(p->ifname, filter)) 1415 return (0); /* exact match */ 1416 n = strlen(filter); 1417 if (n < 1 || n >= IFNAMSIZ) 1418 return (1); /* sanity check */ 1419 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1420 return (1); /* only do exact match in that case */ 1421 if (strncmp(p->ifname, filter, n)) 1422 return (1); /* prefix doesn't match */ 1423 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1424} 1425 1426 1427struct node_host * 1428host(const char *s) 1429{ 1430 struct node_host *h = NULL; 1431 int mask, v4mask, v6mask, cont = 1; 1432 char *p, *q, *ps; 1433 1434 if ((p = strrchr(s, '/')) != NULL) { 1435 mask = strtol(p+1, &q, 0); 1436 if (!q || *q || mask > 128 || q == (p+1)) { 1437 fprintf(stderr, "invalid netmask '%s'\n", p); 1438 return (NULL); 1439 } 1440 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1441 err(1, "host: malloc"); 1442 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1443 v4mask = v6mask = mask; 1444 } else { 1445 if ((ps = strdup(s)) == NULL) 1446 err(1, "host: strdup"); 1447 v4mask = 32; 1448 v6mask = 128; 1449 mask = -1; 1450 } 1451 1452 /* interface with this name exists? */ 1453 if (cont && (h = host_if(ps, mask)) != NULL) 1454 cont = 0; 1455 1456 /* IPv4 address? */ 1457 if (cont && (h = host_v4(s, mask)) != NULL) 1458 cont = 0; 1459 1460 /* IPv6 address? */ 1461 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1462 cont = 0; 1463 1464 /* dns lookup */ 1465 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1466 cont = 0; 1467 free(ps); 1468 1469 if (h == NULL || cont == 1) { 1470 fprintf(stderr, "no IP address found for %s\n", s); 1471 return (NULL); 1472 } 1473 return (h); 1474} 1475 1476struct node_host * 1477host_if(const char *s, int mask) 1478{ 1479 struct node_host *n, *h = NULL; 1480 char *p, *ps; 1481 int flags = 0; 1482 1483 if ((ps = strdup(s)) == NULL) 1484 err(1, "host_if: strdup"); 1485 while ((p = strrchr(ps, ':')) != NULL) { 1486 if (!strcmp(p+1, "network")) 1487 flags |= PFI_AFLAG_NETWORK; 1488 else if (!strcmp(p+1, "broadcast")) 1489 flags |= PFI_AFLAG_BROADCAST; 1490 else if (!strcmp(p+1, "peer")) 1491 flags |= PFI_AFLAG_PEER; 1492 else if (!strcmp(p+1, "0")) 1493 flags |= PFI_AFLAG_NOALIAS; 1494 else { 1495 free(ps); 1496 return (NULL); 1497 } 1498 *p = '\0'; 1499 } 1500 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1501 fprintf(stderr, "illegal combination of interface modifiers\n"); 1502 free(ps); 1503 return (NULL); 1504 } 1505 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1506 fprintf(stderr, "network or broadcast lookup, but " 1507 "extra netmask given\n"); 1508 free(ps); 1509 return (NULL); 1510 } 1511 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1512 /* interface with this name exists */ 1513 h = ifa_lookup(ps, flags); 1514 for (n = h; n != NULL && mask > -1; n = n->next) 1515 set_ipmask(n, mask); 1516 } 1517 1518 free(ps); 1519 return (h); 1520} 1521 1522struct node_host * 1523host_v4(const char *s, int mask) 1524{ 1525 struct node_host *h = NULL; 1526 struct in_addr ina; 1527 int bits = 32; 1528 1529 memset(&ina, 0, sizeof(struct in_addr)); 1530 if (strrchr(s, '/') != NULL) { 1531 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1532 return (NULL); 1533 } else { 1534 if (inet_pton(AF_INET, s, &ina) != 1) 1535 return (NULL); 1536 } 1537 1538 h = calloc(1, sizeof(struct node_host)); 1539 if (h == NULL) 1540 err(1, "address: calloc"); 1541 h->ifname = NULL; 1542 h->af = AF_INET; 1543 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1544 set_ipmask(h, bits); 1545 h->next = NULL; 1546 h->tail = h; 1547 1548 return (h); 1549} 1550 1551struct node_host * 1552host_v6(const char *s, int mask) 1553{ 1554 struct addrinfo hints, *res; 1555 struct node_host *h = NULL; 1556 1557 memset(&hints, 0, sizeof(hints)); 1558 hints.ai_family = AF_INET6; 1559 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1560 hints.ai_flags = AI_NUMERICHOST; 1561 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1562 h = calloc(1, sizeof(struct node_host)); 1563 if (h == NULL) 1564 err(1, "address: calloc"); 1565 h->ifname = NULL; 1566 h->af = AF_INET6; 1567 memcpy(&h->addr.v.a.addr, 1568 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1569 sizeof(h->addr.v.a.addr)); 1570 h->ifindex = 1571 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1572 set_ipmask(h, mask); 1573 freeaddrinfo(res); 1574 h->next = NULL; 1575 h->tail = h; 1576 } 1577 1578 return (h); 1579} 1580 1581struct node_host * 1582host_dns(const char *s, int v4mask, int v6mask) 1583{ 1584 struct addrinfo hints, *res0, *res; 1585 struct node_host *n, *h = NULL; 1586 int error, noalias = 0; 1587 int got4 = 0, got6 = 0; 1588 char *p, *ps; 1589 1590 if ((ps = strdup(s)) == NULL) 1591 err(1, "host_dns: strdup"); 1592 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1593 noalias = 1; 1594 *p = '\0'; 1595 } 1596 memset(&hints, 0, sizeof(hints)); 1597 hints.ai_family = PF_UNSPEC; 1598 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1599 error = getaddrinfo(ps, NULL, &hints, &res0); 1600 if (error) { 1601 free(ps); 1602 return (h); 1603 } 1604 1605 for (res = res0; res; res = res->ai_next) { 1606 if (res->ai_family != AF_INET && 1607 res->ai_family != AF_INET6) 1608 continue; 1609 if (noalias) { 1610 if (res->ai_family == AF_INET) { 1611 if (got4) 1612 continue; 1613 got4 = 1; 1614 } else { 1615 if (got6) 1616 continue; 1617 got6 = 1; 1618 } 1619 } 1620 n = calloc(1, sizeof(struct node_host)); 1621 if (n == NULL) 1622 err(1, "host_dns: calloc"); 1623 n->ifname = NULL; 1624 n->af = res->ai_family; 1625 if (res->ai_family == AF_INET) { 1626 memcpy(&n->addr.v.a.addr, 1627 &((struct sockaddr_in *) 1628 res->ai_addr)->sin_addr.s_addr, 1629 sizeof(struct in_addr)); 1630 set_ipmask(n, v4mask); 1631 } else { 1632 memcpy(&n->addr.v.a.addr, 1633 &((struct sockaddr_in6 *) 1634 res->ai_addr)->sin6_addr.s6_addr, 1635 sizeof(struct in6_addr)); 1636 n->ifindex = 1637 ((struct sockaddr_in6 *) 1638 res->ai_addr)->sin6_scope_id; 1639 set_ipmask(n, v6mask); 1640 } 1641 n->next = NULL; 1642 n->tail = n; 1643 if (h == NULL) 1644 h = n; 1645 else { 1646 h->tail->next = n; 1647 h->tail = n; 1648 } 1649 } 1650 freeaddrinfo(res0); 1651 free(ps); 1652 1653 return (h); 1654} 1655 1656/* 1657 * convert a hostname to a list of addresses and put them in the given buffer. 1658 * test: 1659 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1660 */ 1661int 1662append_addr(struct pfr_buffer *b, char *s, int test) 1663{ 1664 char *r; 1665 struct node_host *h, *n; 1666 int rv, not = 0; 1667 1668 for (r = s; *r == '!'; r++) 1669 not = !not; 1670 if ((n = host(r)) == NULL) { 1671 errno = 0; 1672 return (-1); 1673 } 1674 rv = append_addr_host(b, n, test, not); 1675 do { 1676 h = n; 1677 n = n->next; 1678 free(h); 1679 } while (n != NULL); 1680 return (rv); 1681} 1682 1683/* 1684 * same as previous function, but with a pre-parsed input and the ability 1685 * to "negate" the result. Does not free the node_host list. 1686 * not: 1687 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1688 */ 1689int 1690append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1691{ 1692 int bits; 1693 struct pfr_addr addr; 1694 1695 do { 1696 bzero(&addr, sizeof(addr)); 1697 addr.pfra_not = n->not ^ not; 1698 addr.pfra_af = n->af; 1699 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1700 switch (n->af) { 1701 case AF_INET: 1702 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1703 bits = 32; 1704 break; 1705 case AF_INET6: 1706 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1707 sizeof(struct in6_addr)); 1708 bits = 128; 1709 break; 1710 default: 1711 errno = EINVAL; 1712 return (-1); 1713 } 1714 if ((test && (not || addr.pfra_net != bits)) || 1715 addr.pfra_net > bits) { 1716 errno = EINVAL; 1717 return (-1); 1718 } 1719 if (pfr_buf_add(b, &addr)) 1720 return (-1); 1721 } while ((n = n->next) != NULL); 1722 1723 return (0); 1724} 1725 1726int 1727pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 1728{ 1729 struct pfioc_trans_e trans; 1730 1731 bzero(&trans, sizeof(trans)); 1732 trans.rs_num = rs_num; 1733 if (strlcpy(trans.anchor, anchor, 1734 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1735 errx(1, "pfctl_add_trans: strlcpy"); 1736 1737 return pfr_buf_add(buf, &trans); 1738} 1739 1740u_int32_t 1741pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 1742{ 1743 struct pfioc_trans_e *p; 1744 1745 PFRB_FOREACH(p, buf) 1746 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 1747 return (p->ticket); 1748 errx(1, "pfctl_get_ticket: assertion failed"); 1749} 1750 1751int 1752pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1753{ 1754 struct pfioc_trans trans; 1755 1756 bzero(&trans, sizeof(trans)); 1757 trans.size = buf->pfrb_size - from; 1758 trans.esize = sizeof(struct pfioc_trans_e); 1759 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1760 return ioctl(dev, cmd, &trans); 1761} 1762