pfctl.c revision 171172
1/* $OpenBSD: pfctl.c,v 1.262 2007/03/01 17:20:53 deraadt 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/contrib/pf/pfctl/pfctl.c 171172 2007-07-03 12:30:03Z mlaier $"); 36 37#include <sys/types.h> 38#include <sys/ioctl.h> 39#include <sys/socket.h> 40#include <sys/stat.h> 41 42#include <net/if.h> 43#include <netinet/in.h> 44#include <net/pfvar.h> 45#include <arpa/inet.h> 46#include <altq/altq.h> 47#include <sys/sysctl.h> 48 49#include <err.h> 50#include <errno.h> 51#include <fcntl.h> 52#include <limits.h> 53#include <netdb.h> 54#include <stdio.h> 55#include <stdlib.h> 56#include <string.h> 57#include <unistd.h> 58 59#include "pfctl_parser.h" 60#include "pfctl.h" 61 62#ifdef __FreeBSD__ 63#define HTONL(x) (x) = htonl((__uint32_t)(x)) 64#endif 65 66void usage(void); 67int pfctl_enable(int, int); 68int pfctl_disable(int, int); 69int pfctl_clear_stats(int, int); 70int pfctl_clear_interface_flags(int, int); 71int pfctl_clear_rules(int, int, char *); 72int pfctl_clear_nat(int, int, char *); 73int pfctl_clear_altq(int, int); 74int pfctl_clear_src_nodes(int, int); 75int pfctl_clear_states(int, const char *, int); 76void pfctl_addrprefix(char *, struct pf_addr *); 77int pfctl_kill_src_nodes(int, const char *, int); 78int pfctl_kill_states(int, const char *, int); 79void pfctl_init_options(struct pfctl *); 80int pfctl_load_options(struct pfctl *); 81int pfctl_load_limit(struct pfctl *, unsigned int, unsigned int); 82int pfctl_load_timeout(struct pfctl *, unsigned int, unsigned int); 83int pfctl_load_debug(struct pfctl *, unsigned int); 84int pfctl_load_logif(struct pfctl *, char *); 85int pfctl_load_hostid(struct pfctl *, unsigned int); 86int pfctl_get_pool(int, struct pf_pool *, u_int32_t, u_int32_t, int, 87 char *); 88void pfctl_print_rule_counters(struct pf_rule *, int); 89int pfctl_show_rules(int, char *, int, enum pfctl_show, char *, int); 90int pfctl_show_nat(int, int, char *); 91int pfctl_show_src_nodes(int, int); 92int pfctl_show_states(int, const char *, int); 93int pfctl_show_status(int, int); 94int pfctl_show_timeouts(int, int); 95int pfctl_show_limits(int, int); 96void pfctl_debug(int, u_int32_t, int); 97int pfctl_test_altqsupport(int, int); 98int pfctl_show_anchors(int, int, char *); 99int pfctl_ruleset_trans(struct pfctl *, char *, struct pf_anchor *); 100int pfctl_load_ruleset(struct pfctl *, char *, 101 struct pf_ruleset *, int, int); 102int pfctl_load_rule(struct pfctl *, char *, struct pf_rule *, int); 103const char *pfctl_lookup_option(char *, const char **); 104 105struct pf_anchor_global pf_anchors; 106struct pf_anchor pf_main_anchor; 107 108const char *clearopt; 109char *rulesopt; 110const char *showopt; 111const char *debugopt; 112char *anchoropt; 113const char *optiopt = NULL; 114char *pf_device = "/dev/pf"; 115char *ifaceopt; 116char *tableopt; 117const char *tblcmdopt; 118int src_node_killers; 119char *src_node_kill[2]; 120int state_killers; 121char *state_kill[2]; 122int loadopt; 123int altqsupport; 124 125int dev = -1; 126int first_title = 1; 127int labels = 0; 128 129const char *infile; 130 131#define INDENT(d, o) do { \ 132 if (o) { \ 133 int i; \ 134 for (i=0; i < d; i++) \ 135 printf(" "); \ 136 } \ 137 } while (0); \ 138 139 140static const struct { 141 const char *name; 142 int index; 143} pf_limits[] = { 144 { "states", PF_LIMIT_STATES }, 145 { "src-nodes", PF_LIMIT_SRC_NODES }, 146 { "frags", PF_LIMIT_FRAGS }, 147 { "tables", PF_LIMIT_TABLES }, 148 { "table-entries", PF_LIMIT_TABLE_ENTRIES }, 149 { NULL, 0 } 150}; 151 152struct pf_hint { 153 const char *name; 154 int timeout; 155}; 156static const struct pf_hint pf_hint_normal[] = { 157 { "tcp.first", 2 * 60 }, 158 { "tcp.opening", 30 }, 159 { "tcp.established", 24 * 60 * 60 }, 160 { "tcp.closing", 15 * 60 }, 161 { "tcp.finwait", 45 }, 162 { "tcp.closed", 90 }, 163 { "tcp.tsdiff", 30 }, 164 { NULL, 0 } 165}; 166static const struct pf_hint pf_hint_satellite[] = { 167 { "tcp.first", 3 * 60 }, 168 { "tcp.opening", 30 + 5 }, 169 { "tcp.established", 24 * 60 * 60 }, 170 { "tcp.closing", 15 * 60 + 5 }, 171 { "tcp.finwait", 45 + 5 }, 172 { "tcp.closed", 90 + 5 }, 173 { "tcp.tsdiff", 60 }, 174 { NULL, 0 } 175}; 176static const struct pf_hint pf_hint_conservative[] = { 177 { "tcp.first", 60 * 60 }, 178 { "tcp.opening", 15 * 60 }, 179 { "tcp.established", 5 * 24 * 60 * 60 }, 180 { "tcp.closing", 60 * 60 }, 181 { "tcp.finwait", 10 * 60 }, 182 { "tcp.closed", 3 * 60 }, 183 { "tcp.tsdiff", 60 }, 184 { NULL, 0 } 185}; 186static const struct pf_hint pf_hint_aggressive[] = { 187 { "tcp.first", 30 }, 188 { "tcp.opening", 5 }, 189 { "tcp.established", 5 * 60 * 60 }, 190 { "tcp.closing", 60 }, 191 { "tcp.finwait", 30 }, 192 { "tcp.closed", 30 }, 193 { "tcp.tsdiff", 10 }, 194 { NULL, 0 } 195}; 196 197static const struct { 198 const char *name; 199 const struct pf_hint *hint; 200} pf_hints[] = { 201 { "normal", pf_hint_normal }, 202 { "satellite", pf_hint_satellite }, 203 { "high-latency", pf_hint_satellite }, 204 { "conservative", pf_hint_conservative }, 205 { "aggressive", pf_hint_aggressive }, 206 { NULL, NULL } 207}; 208 209static const char *clearopt_list[] = { 210 "nat", "queue", "rules", "Sources", 211 "state", "info", "Tables", "osfp", "all", NULL 212}; 213 214static const char *showopt_list[] = { 215 "nat", "queue", "rules", "Anchors", "Sources", "state", "info", 216 "Interfaces", "labels", "timeouts", "memory", "Tables", "osfp", 217 "all", NULL 218}; 219 220static const char *tblcmdopt_list[] = { 221 "kill", "flush", "add", "delete", "load", "replace", "show", 222 "test", "zero", "expire", NULL 223}; 224 225static const char *debugopt_list[] = { 226 "none", "urgent", "misc", "loud", NULL 227}; 228 229static const char *optiopt_list[] = { 230 "o", "none", "basic", "profile", NULL 231}; 232 233void 234usage(void) 235{ 236 extern char *__progname; 237 238 fprintf(stderr, "usage: %s [-AdeghmNnOqRrvz] ", __progname); 239 fprintf(stderr, "[-a anchor] [-D macro=value] [-F modifier]\n"); 240 fprintf(stderr, "\t[-f file] [-i interface] [-K host | network] "); 241 fprintf(stderr, "[-k host | network ]\n"); 242 fprintf(stderr, "\t[-o [level]] [-p device] [-s modifier ]\n"); 243 fprintf(stderr, "\t[-t table -T command [address ...]] [-x level]\n"); 244 exit(1); 245} 246 247int 248pfctl_enable(int dev, int opts) 249{ 250 if (ioctl(dev, DIOCSTART)) { 251 if (errno == EEXIST) 252 errx(1, "pf already enabled"); 253#ifdef __FreeBSD__ 254 else if (errno == ESRCH) 255 errx(1, "pfil registeration failed"); 256#endif 257 else 258 err(1, "DIOCSTART"); 259 } 260 if ((opts & PF_OPT_QUIET) == 0) 261 fprintf(stderr, "pf enabled\n"); 262 263 if (altqsupport && ioctl(dev, DIOCSTARTALTQ)) 264 if (errno != EEXIST) 265 err(1, "DIOCSTARTALTQ"); 266 267 return (0); 268} 269 270int 271pfctl_disable(int dev, int opts) 272{ 273 if (ioctl(dev, DIOCSTOP)) { 274 if (errno == ENOENT) 275 errx(1, "pf not enabled"); 276 else 277 err(1, "DIOCSTOP"); 278 } 279 if ((opts & PF_OPT_QUIET) == 0) 280 fprintf(stderr, "pf disabled\n"); 281 282 if (altqsupport && ioctl(dev, DIOCSTOPALTQ)) 283 if (errno != ENOENT) 284 err(1, "DIOCSTOPALTQ"); 285 286 return (0); 287} 288 289int 290pfctl_clear_stats(int dev, int opts) 291{ 292 if (ioctl(dev, DIOCCLRSTATUS)) 293 err(1, "DIOCCLRSTATUS"); 294 if ((opts & PF_OPT_QUIET) == 0) 295 fprintf(stderr, "pf: statistics cleared\n"); 296 return (0); 297} 298 299int 300pfctl_clear_interface_flags(int dev, int opts) 301{ 302 struct pfioc_iface pi; 303 304 if ((opts & PF_OPT_NOACTION) == 0) { 305 bzero(&pi, sizeof(pi)); 306 pi.pfiio_flags = PFI_IFLAG_SKIP; 307 308 if (ioctl(dev, DIOCCLRIFFLAG, &pi)) 309 err(1, "DIOCCLRIFFLAG"); 310 if ((opts & PF_OPT_QUIET) == 0) 311 fprintf(stderr, "pf: interface flags reset\n"); 312 } 313 return (0); 314} 315 316int 317pfctl_clear_rules(int dev, int opts, char *anchorname) 318{ 319 struct pfr_buffer t; 320 321 memset(&t, 0, sizeof(t)); 322 t.pfrb_type = PFRB_TRANS; 323 if (pfctl_add_trans(&t, PF_RULESET_SCRUB, anchorname) || 324 pfctl_add_trans(&t, PF_RULESET_FILTER, anchorname) || 325 pfctl_trans(dev, &t, DIOCXBEGIN, 0) || 326 pfctl_trans(dev, &t, DIOCXCOMMIT, 0)) 327 err(1, "pfctl_clear_rules"); 328 if ((opts & PF_OPT_QUIET) == 0) 329 fprintf(stderr, "rules cleared\n"); 330 return (0); 331} 332 333int 334pfctl_clear_nat(int dev, int opts, char *anchorname) 335{ 336 struct pfr_buffer t; 337 338 memset(&t, 0, sizeof(t)); 339 t.pfrb_type = PFRB_TRANS; 340 if (pfctl_add_trans(&t, PF_RULESET_NAT, anchorname) || 341 pfctl_add_trans(&t, PF_RULESET_BINAT, anchorname) || 342 pfctl_add_trans(&t, PF_RULESET_RDR, anchorname) || 343 pfctl_trans(dev, &t, DIOCXBEGIN, 0) || 344 pfctl_trans(dev, &t, DIOCXCOMMIT, 0)) 345 err(1, "pfctl_clear_nat"); 346 if ((opts & PF_OPT_QUIET) == 0) 347 fprintf(stderr, "nat cleared\n"); 348 return (0); 349} 350 351int 352pfctl_clear_altq(int dev, int opts) 353{ 354 struct pfr_buffer t; 355 356 if (!altqsupport) 357 return (-1); 358 memset(&t, 0, sizeof(t)); 359 t.pfrb_type = PFRB_TRANS; 360 if (pfctl_add_trans(&t, PF_RULESET_ALTQ, "") || 361 pfctl_trans(dev, &t, DIOCXBEGIN, 0) || 362 pfctl_trans(dev, &t, DIOCXCOMMIT, 0)) 363 err(1, "pfctl_clear_altq"); 364 if ((opts & PF_OPT_QUIET) == 0) 365 fprintf(stderr, "altq cleared\n"); 366 return (0); 367} 368 369int 370pfctl_clear_src_nodes(int dev, int opts) 371{ 372 if (ioctl(dev, DIOCCLRSRCNODES)) 373 err(1, "DIOCCLRSRCNODES"); 374 if ((opts & PF_OPT_QUIET) == 0) 375 fprintf(stderr, "source tracking entries cleared\n"); 376 return (0); 377} 378 379int 380pfctl_clear_states(int dev, const char *iface, int opts) 381{ 382 struct pfioc_state_kill psk; 383 384 memset(&psk, 0, sizeof(psk)); 385 if (iface != NULL && strlcpy(psk.psk_ifname, iface, 386 sizeof(psk.psk_ifname)) >= sizeof(psk.psk_ifname)) 387 errx(1, "invalid interface: %s", iface); 388 389 if (ioctl(dev, DIOCCLRSTATES, &psk)) 390 err(1, "DIOCCLRSTATES"); 391 if ((opts & PF_OPT_QUIET) == 0) 392 fprintf(stderr, "%d states cleared\n", psk.psk_af); 393 return (0); 394} 395 396void 397pfctl_addrprefix(char *addr, struct pf_addr *mask) 398{ 399 char *p; 400 const char *errstr; 401 int prefix, ret_ga, q, r; 402 struct addrinfo hints, *res; 403 404 if ((p = strchr(addr, '/')) == NULL) 405 return; 406 407 *p++ = '\0'; 408 prefix = strtonum(p, 0, 128, &errstr); 409 if (errstr) 410 errx(1, "prefix is %s: %s", errstr, p); 411 412 bzero(&hints, sizeof(hints)); 413 /* prefix only with numeric addresses */ 414 hints.ai_flags |= AI_NUMERICHOST; 415 416 if ((ret_ga = getaddrinfo(addr, NULL, &hints, &res))) { 417 errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); 418 /* NOTREACHED */ 419 } 420 421 if (res->ai_family == AF_INET && prefix > 32) 422 errx(1, "prefix too long for AF_INET"); 423 else if (res->ai_family == AF_INET6 && prefix > 128) 424 errx(1, "prefix too long for AF_INET6"); 425 426 q = prefix >> 3; 427 r = prefix & 7; 428 switch (res->ai_family) { 429 case AF_INET: 430 bzero(&mask->v4, sizeof(mask->v4)); 431 mask->v4.s_addr = htonl((u_int32_t) 432 (0xffffffffffULL << (32 - prefix))); 433 break; 434 case AF_INET6: 435 bzero(&mask->v6, sizeof(mask->v6)); 436 if (q > 0) 437 memset((void *)&mask->v6, 0xff, q); 438 if (r > 0) 439 *((u_char *)&mask->v6 + q) = 440 (0xff00 >> r) & 0xff; 441 break; 442 } 443 freeaddrinfo(res); 444} 445 446int 447pfctl_kill_src_nodes(int dev, const char *iface, int opts) 448{ 449 struct pfioc_src_node_kill psnk; 450 struct addrinfo *res[2], *resp[2]; 451 struct sockaddr last_src, last_dst; 452 int killed, sources, dests; 453 int ret_ga; 454 455 killed = sources = dests = 0; 456 457 memset(&psnk, 0, sizeof(psnk)); 458 memset(&psnk.psnk_src.addr.v.a.mask, 0xff, 459 sizeof(psnk.psnk_src.addr.v.a.mask)); 460 memset(&last_src, 0xff, sizeof(last_src)); 461 memset(&last_dst, 0xff, sizeof(last_dst)); 462 463 pfctl_addrprefix(src_node_kill[0], &psnk.psnk_src.addr.v.a.mask); 464 465 if ((ret_ga = getaddrinfo(src_node_kill[0], NULL, NULL, &res[0]))) { 466 errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); 467 /* NOTREACHED */ 468 } 469 for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) { 470 if (resp[0]->ai_addr == NULL) 471 continue; 472 /* We get lots of duplicates. Catch the easy ones */ 473 if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0) 474 continue; 475 last_src = *(struct sockaddr *)resp[0]->ai_addr; 476 477 psnk.psnk_af = resp[0]->ai_family; 478 sources++; 479 480 if (psnk.psnk_af == AF_INET) 481 psnk.psnk_src.addr.v.a.addr.v4 = 482 ((struct sockaddr_in *)resp[0]->ai_addr)->sin_addr; 483 else if (psnk.psnk_af == AF_INET6) 484 psnk.psnk_src.addr.v.a.addr.v6 = 485 ((struct sockaddr_in6 *)resp[0]->ai_addr)-> 486 sin6_addr; 487 else 488 errx(1, "Unknown address family %d", psnk.psnk_af); 489 490 if (src_node_killers > 1) { 491 dests = 0; 492 memset(&psnk.psnk_dst.addr.v.a.mask, 0xff, 493 sizeof(psnk.psnk_dst.addr.v.a.mask)); 494 memset(&last_dst, 0xff, sizeof(last_dst)); 495 pfctl_addrprefix(src_node_kill[1], 496 &psnk.psnk_dst.addr.v.a.mask); 497 if ((ret_ga = getaddrinfo(src_node_kill[1], NULL, NULL, 498 &res[1]))) { 499 errx(1, "getaddrinfo: %s", 500 gai_strerror(ret_ga)); 501 /* NOTREACHED */ 502 } 503 for (resp[1] = res[1]; resp[1]; 504 resp[1] = resp[1]->ai_next) { 505 if (resp[1]->ai_addr == NULL) 506 continue; 507 if (psnk.psnk_af != resp[1]->ai_family) 508 continue; 509 510 if (memcmp(&last_dst, resp[1]->ai_addr, 511 sizeof(last_dst)) == 0) 512 continue; 513 last_dst = *(struct sockaddr *)resp[1]->ai_addr; 514 515 dests++; 516 517 if (psnk.psnk_af == AF_INET) 518 psnk.psnk_dst.addr.v.a.addr.v4 = 519 ((struct sockaddr_in *)resp[1]-> 520 ai_addr)->sin_addr; 521 else if (psnk.psnk_af == AF_INET6) 522 psnk.psnk_dst.addr.v.a.addr.v6 = 523 ((struct sockaddr_in6 *)resp[1]-> 524 ai_addr)->sin6_addr; 525 else 526 errx(1, "Unknown address family %d", 527 psnk.psnk_af); 528 529 if (ioctl(dev, DIOCKILLSRCNODES, &psnk)) 530 err(1, "DIOCKILLSRCNODES"); 531 killed += psnk.psnk_af; 532 /* fixup psnk.psnk_af */ 533 psnk.psnk_af = resp[1]->ai_family; 534 } 535 freeaddrinfo(res[1]); 536 } else { 537 if (ioctl(dev, DIOCKILLSRCNODES, &psnk)) 538 err(1, "DIOCKILLSRCNODES"); 539 killed += psnk.psnk_af; 540 /* fixup psnk.psnk_af */ 541 psnk.psnk_af = res[0]->ai_family; 542 } 543 } 544 545 freeaddrinfo(res[0]); 546 547 if ((opts & PF_OPT_QUIET) == 0) 548 fprintf(stderr, "killed %d src nodes from %d sources and %d " 549 "destinations\n", killed, sources, dests); 550 return (0); 551} 552 553int 554pfctl_kill_states(int dev, const char *iface, int opts) 555{ 556 struct pfioc_state_kill psk; 557 struct addrinfo *res[2], *resp[2]; 558 struct sockaddr last_src, last_dst; 559 int killed, sources, dests; 560 int ret_ga; 561 562 killed = sources = dests = 0; 563 564 memset(&psk, 0, sizeof(psk)); 565 memset(&psk.psk_src.addr.v.a.mask, 0xff, 566 sizeof(psk.psk_src.addr.v.a.mask)); 567 memset(&last_src, 0xff, sizeof(last_src)); 568 memset(&last_dst, 0xff, sizeof(last_dst)); 569 if (iface != NULL && strlcpy(psk.psk_ifname, iface, 570 sizeof(psk.psk_ifname)) >= sizeof(psk.psk_ifname)) 571 errx(1, "invalid interface: %s", iface); 572 573 pfctl_addrprefix(state_kill[0], &psk.psk_src.addr.v.a.mask); 574 575 if ((ret_ga = getaddrinfo(state_kill[0], NULL, NULL, &res[0]))) { 576 errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); 577 /* NOTREACHED */ 578 } 579 for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) { 580 if (resp[0]->ai_addr == NULL) 581 continue; 582 /* We get lots of duplicates. Catch the easy ones */ 583 if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0) 584 continue; 585 last_src = *(struct sockaddr *)resp[0]->ai_addr; 586 587 psk.psk_af = resp[0]->ai_family; 588 sources++; 589 590 if (psk.psk_af == AF_INET) 591 psk.psk_src.addr.v.a.addr.v4 = 592 ((struct sockaddr_in *)resp[0]->ai_addr)->sin_addr; 593 else if (psk.psk_af == AF_INET6) 594 psk.psk_src.addr.v.a.addr.v6 = 595 ((struct sockaddr_in6 *)resp[0]->ai_addr)-> 596 sin6_addr; 597 else 598 errx(1, "Unknown address family %d", psk.psk_af); 599 600 if (state_killers > 1) { 601 dests = 0; 602 memset(&psk.psk_dst.addr.v.a.mask, 0xff, 603 sizeof(psk.psk_dst.addr.v.a.mask)); 604 memset(&last_dst, 0xff, sizeof(last_dst)); 605 pfctl_addrprefix(state_kill[1], 606 &psk.psk_dst.addr.v.a.mask); 607 if ((ret_ga = getaddrinfo(state_kill[1], NULL, NULL, 608 &res[1]))) { 609 errx(1, "getaddrinfo: %s", 610 gai_strerror(ret_ga)); 611 /* NOTREACHED */ 612 } 613 for (resp[1] = res[1]; resp[1]; 614 resp[1] = resp[1]->ai_next) { 615 if (resp[1]->ai_addr == NULL) 616 continue; 617 if (psk.psk_af != resp[1]->ai_family) 618 continue; 619 620 if (memcmp(&last_dst, resp[1]->ai_addr, 621 sizeof(last_dst)) == 0) 622 continue; 623 last_dst = *(struct sockaddr *)resp[1]->ai_addr; 624 625 dests++; 626 627 if (psk.psk_af == AF_INET) 628 psk.psk_dst.addr.v.a.addr.v4 = 629 ((struct sockaddr_in *)resp[1]-> 630 ai_addr)->sin_addr; 631 else if (psk.psk_af == AF_INET6) 632 psk.psk_dst.addr.v.a.addr.v6 = 633 ((struct sockaddr_in6 *)resp[1]-> 634 ai_addr)->sin6_addr; 635 else 636 errx(1, "Unknown address family %d", 637 psk.psk_af); 638 639 if (ioctl(dev, DIOCKILLSTATES, &psk)) 640 err(1, "DIOCKILLSTATES"); 641 killed += psk.psk_af; 642 /* fixup psk.psk_af */ 643 psk.psk_af = resp[1]->ai_family; 644 } 645 freeaddrinfo(res[1]); 646 } else { 647 if (ioctl(dev, DIOCKILLSTATES, &psk)) 648 err(1, "DIOCKILLSTATES"); 649 killed += psk.psk_af; 650 /* fixup psk.psk_af */ 651 psk.psk_af = res[0]->ai_family; 652 } 653 } 654 655 freeaddrinfo(res[0]); 656 657 if ((opts & PF_OPT_QUIET) == 0) 658 fprintf(stderr, "killed %d states from %d sources and %d " 659 "destinations\n", killed, sources, dests); 660 return (0); 661} 662 663int 664pfctl_get_pool(int dev, struct pf_pool *pool, u_int32_t nr, 665 u_int32_t ticket, int r_action, char *anchorname) 666{ 667 struct pfioc_pooladdr pp; 668 struct pf_pooladdr *pa; 669 u_int32_t pnr, mpnr; 670 671 memset(&pp, 0, sizeof(pp)); 672 memcpy(pp.anchor, anchorname, sizeof(pp.anchor)); 673 pp.r_action = r_action; 674 pp.r_num = nr; 675 pp.ticket = ticket; 676 if (ioctl(dev, DIOCGETADDRS, &pp)) { 677 warn("DIOCGETADDRS"); 678 return (-1); 679 } 680 mpnr = pp.nr; 681 TAILQ_INIT(&pool->list); 682 for (pnr = 0; pnr < mpnr; ++pnr) { 683 pp.nr = pnr; 684 if (ioctl(dev, DIOCGETADDR, &pp)) { 685 warn("DIOCGETADDR"); 686 return (-1); 687 } 688 pa = calloc(1, sizeof(struct pf_pooladdr)); 689 if (pa == NULL) 690 err(1, "calloc"); 691 bcopy(&pp.addr, pa, sizeof(struct pf_pooladdr)); 692 TAILQ_INSERT_TAIL(&pool->list, pa, entries); 693 } 694 695 return (0); 696} 697 698void 699pfctl_move_pool(struct pf_pool *src, struct pf_pool *dst) 700{ 701 struct pf_pooladdr *pa; 702 703 while ((pa = TAILQ_FIRST(&src->list)) != NULL) { 704 TAILQ_REMOVE(&src->list, pa, entries); 705 TAILQ_INSERT_TAIL(&dst->list, pa, entries); 706 } 707} 708 709void 710pfctl_clear_pool(struct pf_pool *pool) 711{ 712 struct pf_pooladdr *pa; 713 714 while ((pa = TAILQ_FIRST(&pool->list)) != NULL) { 715 TAILQ_REMOVE(&pool->list, pa, entries); 716 free(pa); 717 } 718} 719 720void 721pfctl_print_rule_counters(struct pf_rule *rule, int opts) 722{ 723 if (opts & PF_OPT_DEBUG) { 724 const char *t[PF_SKIP_COUNT] = { "i", "d", "f", 725 "p", "sa", "sp", "da", "dp" }; 726 int i; 727 728 printf(" [ Skip steps: "); 729 for (i = 0; i < PF_SKIP_COUNT; ++i) { 730 if (rule->skip[i].nr == rule->nr + 1) 731 continue; 732 printf("%s=", t[i]); 733 if (rule->skip[i].nr == -1) 734 printf("end "); 735 else 736 printf("%u ", rule->skip[i].nr); 737 } 738 printf("]\n"); 739 740 printf(" [ queue: qname=%s qid=%u pqname=%s pqid=%u ]\n", 741 rule->qname, rule->qid, rule->pqname, rule->pqid); 742 } 743 if (opts & PF_OPT_VERBOSE) { 744 printf(" [ Evaluations: %-8llu Packets: %-8llu " 745 "Bytes: %-10llu States: %-6u]\n", 746 (unsigned long long)rule->evaluations, 747 (unsigned long long)(rule->packets[0] + 748 rule->packets[1]), 749 (unsigned long long)(rule->bytes[0] + 750 rule->bytes[1]), rule->states); 751 if (!(opts & PF_OPT_DEBUG)) 752 printf(" [ Inserted: uid %u pid %u ]\n", 753 (unsigned)rule->cuid, (unsigned)rule->cpid); 754 } 755} 756 757void 758pfctl_print_title(char *title) 759{ 760 if (!first_title) 761 printf("\n"); 762 first_title = 0; 763 printf("%s\n", title); 764} 765 766int 767pfctl_show_rules(int dev, char *path, int opts, enum pfctl_show format, 768 char *anchorname, int depth) 769{ 770 struct pfioc_rule pr; 771 u_int32_t nr, mnr, header = 0; 772 int rule_numbers = opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG); 773 int len = strlen(path); 774 int brace; 775 char *p; 776 777 if (path[0]) 778 snprintf(&path[len], MAXPATHLEN - len, "/%s", anchorname); 779 else 780 snprintf(&path[len], MAXPATHLEN - len, "%s", anchorname); 781 782 memset(&pr, 0, sizeof(pr)); 783 memcpy(pr.anchor, path, sizeof(pr.anchor)); 784 if (opts & PF_OPT_SHOWALL) { 785 pr.rule.action = PF_PASS; 786 if (ioctl(dev, DIOCGETRULES, &pr)) { 787 warn("DIOCGETRULES"); 788 goto error; 789 } 790 header++; 791 } 792 pr.rule.action = PF_SCRUB; 793 if (ioctl(dev, DIOCGETRULES, &pr)) { 794 warn("DIOCGETRULES"); 795 goto error; 796 } 797 if (opts & PF_OPT_SHOWALL) { 798 if (format == PFCTL_SHOW_RULES && (pr.nr > 0 || header)) 799 pfctl_print_title("FILTER RULES:"); 800 else if (format == PFCTL_SHOW_LABELS && labels) 801 pfctl_print_title("LABEL COUNTERS:"); 802 } 803 mnr = pr.nr; 804 if (opts & PF_OPT_CLRRULECTRS) 805 pr.action = PF_GET_CLR_CNTR; 806 807 for (nr = 0; nr < mnr; ++nr) { 808 pr.nr = nr; 809 if (ioctl(dev, DIOCGETRULE, &pr)) { 810 warn("DIOCGETRULE"); 811 goto error; 812 } 813 814 if (pfctl_get_pool(dev, &pr.rule.rpool, 815 nr, pr.ticket, PF_SCRUB, path) != 0) 816 goto error; 817 818 switch (format) { 819 case PFCTL_SHOW_LABELS: 820 if (pr.rule.label[0]) { 821 printf("%s ", pr.rule.label); 822 printf("%llu %llu %llu %llu %llu %llu %llu\n", 823 (unsigned long long)pr.rule.evaluations, 824 (unsigned long long)(pr.rule.packets[0] + 825 pr.rule.packets[1]), 826 (unsigned long long)(pr.rule.bytes[0] + 827 pr.rule.bytes[1]), 828 (unsigned long long)pr.rule.packets[0], 829 (unsigned long long)pr.rule.bytes[0], 830 (unsigned long long)pr.rule.packets[1], 831 (unsigned long long)pr.rule.bytes[1]); 832 } 833 break; 834 case PFCTL_SHOW_RULES: 835 if (pr.rule.label[0] && (opts & PF_OPT_SHOWALL)) 836 labels = 1; 837 print_rule(&pr.rule, pr.anchor_call, rule_numbers); 838 printf("\n"); 839 pfctl_print_rule_counters(&pr.rule, opts); 840 break; 841 case PFCTL_SHOW_NOTHING: 842 break; 843 } 844 pfctl_clear_pool(&pr.rule.rpool); 845 } 846 pr.rule.action = PF_PASS; 847 if (ioctl(dev, DIOCGETRULES, &pr)) { 848 warn("DIOCGETRULES"); 849 goto error; 850 } 851 mnr = pr.nr; 852 for (nr = 0; nr < mnr; ++nr) { 853 pr.nr = nr; 854 if (ioctl(dev, DIOCGETRULE, &pr)) { 855 warn("DIOCGETRULE"); 856 goto error; 857 } 858 859 if (pfctl_get_pool(dev, &pr.rule.rpool, 860 nr, pr.ticket, PF_PASS, path) != 0) 861 goto error; 862 863 switch (format) { 864 case PFCTL_SHOW_LABELS: 865 if (pr.rule.label[0]) { 866 printf("%s ", pr.rule.label); 867 printf("%llu %llu %llu %llu %llu %llu %llu\n", 868 (unsigned long long)pr.rule.evaluations, 869 (unsigned long long)(pr.rule.packets[0] + 870 pr.rule.packets[1]), 871 (unsigned long long)(pr.rule.bytes[0] + 872 pr.rule.bytes[1]), 873 (unsigned long long)pr.rule.packets[0], 874 (unsigned long long)pr.rule.bytes[0], 875 (unsigned long long)pr.rule.packets[1], 876 (unsigned long long)pr.rule.bytes[1]); 877 } 878 break; 879 case PFCTL_SHOW_RULES: 880 brace = 0; 881 if (pr.rule.label[0] && (opts & PF_OPT_SHOWALL)) 882 labels = 1; 883 INDENT(depth, !(opts & PF_OPT_VERBOSE)); 884 if (pr.anchor_call[0] && 885 ((((p = strrchr(pr.anchor_call, '_')) != NULL) && 886 ((void *)p == (void *)pr.anchor_call || 887 *(--p) == '/')) || (opts & PF_OPT_RECURSE))) { 888 brace++; 889 if ((p = strrchr(pr.anchor_call, '/')) != 890 NULL) 891 p++; 892 else 893 p = &pr.anchor_call[0]; 894 } else 895 p = &pr.anchor_call[0]; 896 897 print_rule(&pr.rule, p, rule_numbers); 898 if (brace) 899 printf(" {\n"); 900 else 901 printf("\n"); 902 pfctl_print_rule_counters(&pr.rule, opts); 903 if (brace) { 904 pfctl_show_rules(dev, path, opts, format, 905 p, depth + 1); 906 INDENT(depth, !(opts & PF_OPT_VERBOSE)); 907 printf("}\n"); 908 } 909 break; 910 case PFCTL_SHOW_NOTHING: 911 break; 912 } 913 pfctl_clear_pool(&pr.rule.rpool); 914 } 915 path[len] = '\0'; 916 return (0); 917 918 error: 919 path[len] = '\0'; 920 return (-1); 921} 922 923int 924pfctl_show_nat(int dev, int opts, char *anchorname) 925{ 926 struct pfioc_rule pr; 927 u_int32_t mnr, nr; 928 static int nattype[3] = { PF_NAT, PF_RDR, PF_BINAT }; 929 int i, dotitle = opts & PF_OPT_SHOWALL; 930 931 memset(&pr, 0, sizeof(pr)); 932 memcpy(pr.anchor, anchorname, sizeof(pr.anchor)); 933 for (i = 0; i < 3; i++) { 934 pr.rule.action = nattype[i]; 935 if (ioctl(dev, DIOCGETRULES, &pr)) { 936 warn("DIOCGETRULES"); 937 return (-1); 938 } 939 mnr = pr.nr; 940 for (nr = 0; nr < mnr; ++nr) { 941 pr.nr = nr; 942 if (ioctl(dev, DIOCGETRULE, &pr)) { 943 warn("DIOCGETRULE"); 944 return (-1); 945 } 946 if (pfctl_get_pool(dev, &pr.rule.rpool, nr, 947 pr.ticket, nattype[i], anchorname) != 0) 948 return (-1); 949 if (dotitle) { 950 pfctl_print_title("TRANSLATION RULES:"); 951 dotitle = 0; 952 } 953 print_rule(&pr.rule, pr.anchor_call, 954 opts & PF_OPT_VERBOSE2); 955 printf("\n"); 956 pfctl_print_rule_counters(&pr.rule, opts); 957 pfctl_clear_pool(&pr.rule.rpool); 958 } 959 } 960 return (0); 961} 962 963int 964pfctl_show_src_nodes(int dev, int opts) 965{ 966 struct pfioc_src_nodes psn; 967 struct pf_src_node *p; 968 char *inbuf = NULL, *newinbuf = NULL; 969 unsigned len = 0; 970 int i; 971 972 memset(&psn, 0, sizeof(psn)); 973 for (;;) { 974 psn.psn_len = len; 975 if (len) { 976 newinbuf = realloc(inbuf, len); 977 if (newinbuf == NULL) 978 err(1, "realloc"); 979 psn.psn_buf = inbuf = newinbuf; 980 } 981 if (ioctl(dev, DIOCGETSRCNODES, &psn) < 0) { 982 warn("DIOCGETSRCNODES"); 983 free(inbuf); 984 return (-1); 985 } 986 if (psn.psn_len + sizeof(struct pfioc_src_nodes) < len) 987 break; 988 if (len == 0 && psn.psn_len == 0) 989 goto done; 990 if (len == 0 && psn.psn_len != 0) 991 len = psn.psn_len; 992 if (psn.psn_len == 0) 993 goto done; /* no src_nodes */ 994 len *= 2; 995 } 996 p = psn.psn_src_nodes; 997 if (psn.psn_len > 0 && (opts & PF_OPT_SHOWALL)) 998 pfctl_print_title("SOURCE TRACKING NODES:"); 999 for (i = 0; i < psn.psn_len; i += sizeof(*p)) { 1000 print_src_node(p, opts); 1001 p++; 1002 } 1003done: 1004 free(inbuf); 1005 return (0); 1006} 1007 1008int 1009pfctl_show_states(int dev, const char *iface, int opts) 1010{ 1011 struct pfioc_states ps; 1012 struct pf_state *p; 1013 char *inbuf = NULL, *newinbuf = NULL; 1014 unsigned len = 0; 1015 int i, dotitle = (opts & PF_OPT_SHOWALL); 1016 1017 memset(&ps, 0, sizeof(ps)); 1018 for (;;) { 1019 ps.ps_len = len; 1020 if (len) { 1021 newinbuf = realloc(inbuf, len); 1022 if (newinbuf == NULL) 1023 err(1, "realloc"); 1024 ps.ps_buf = inbuf = newinbuf; 1025 } 1026 if (ioctl(dev, DIOCGETSTATES, &ps) < 0) { 1027 warn("DIOCGETSTATES"); 1028 free(inbuf); 1029 return (-1); 1030 } 1031 if (ps.ps_len + sizeof(struct pfioc_states) < len) 1032 break; 1033 if (len == 0 && ps.ps_len == 0) 1034 goto done; 1035 if (len == 0 && ps.ps_len != 0) 1036 len = ps.ps_len; 1037 if (ps.ps_len == 0) 1038 goto done; /* no states */ 1039 len *= 2; 1040 } 1041 p = ps.ps_states; 1042 for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) { 1043 if (iface != NULL && strcmp(p->u.ifname, iface)) 1044 continue; 1045 if (dotitle) { 1046 pfctl_print_title("STATES:"); 1047 dotitle = 0; 1048 } 1049 print_state(p, opts); 1050 } 1051done: 1052 free(inbuf); 1053 return (0); 1054} 1055 1056int 1057pfctl_show_status(int dev, int opts) 1058{ 1059 struct pf_status status; 1060 1061 if (ioctl(dev, DIOCGETSTATUS, &status)) { 1062 warn("DIOCGETSTATUS"); 1063 return (-1); 1064 } 1065 if (opts & PF_OPT_SHOWALL) 1066 pfctl_print_title("INFO:"); 1067 print_status(&status, opts); 1068 return (0); 1069} 1070 1071int 1072pfctl_show_timeouts(int dev, int opts) 1073{ 1074 struct pfioc_tm pt; 1075 int i; 1076 1077 if (opts & PF_OPT_SHOWALL) 1078 pfctl_print_title("TIMEOUTS:"); 1079 memset(&pt, 0, sizeof(pt)); 1080 for (i = 0; pf_timeouts[i].name; i++) { 1081 pt.timeout = pf_timeouts[i].timeout; 1082 if (ioctl(dev, DIOCGETTIMEOUT, &pt)) 1083 err(1, "DIOCGETTIMEOUT"); 1084 printf("%-20s %10d", pf_timeouts[i].name, pt.seconds); 1085 if (pf_timeouts[i].timeout >= PFTM_ADAPTIVE_START && 1086 pf_timeouts[i].timeout <= PFTM_ADAPTIVE_END) 1087 printf(" states"); 1088 else 1089 printf("s"); 1090 printf("\n"); 1091 } 1092 return (0); 1093 1094} 1095 1096int 1097pfctl_show_limits(int dev, int opts) 1098{ 1099 struct pfioc_limit pl; 1100 int i; 1101 1102 if (opts & PF_OPT_SHOWALL) 1103 pfctl_print_title("LIMITS:"); 1104 memset(&pl, 0, sizeof(pl)); 1105 for (i = 0; pf_limits[i].name; i++) { 1106 pl.index = pf_limits[i].index; 1107 if (ioctl(dev, DIOCGETLIMIT, &pl)) 1108 err(1, "DIOCGETLIMIT"); 1109 printf("%-13s ", pf_limits[i].name); 1110 if (pl.limit == UINT_MAX) 1111 printf("unlimited\n"); 1112 else 1113 printf("hard limit %8u\n", pl.limit); 1114 } 1115 return (0); 1116} 1117 1118/* callbacks for rule/nat/rdr/addr */ 1119int 1120pfctl_add_pool(struct pfctl *pf, struct pf_pool *p, sa_family_t af) 1121{ 1122 struct pf_pooladdr *pa; 1123 1124 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1125 if (ioctl(pf->dev, DIOCBEGINADDRS, &pf->paddr)) 1126 err(1, "DIOCBEGINADDRS"); 1127 } 1128 1129 pf->paddr.af = af; 1130 TAILQ_FOREACH(pa, &p->list, entries) { 1131 memcpy(&pf->paddr.addr, pa, sizeof(struct pf_pooladdr)); 1132 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1133 if (ioctl(pf->dev, DIOCADDADDR, &pf->paddr)) 1134 err(1, "DIOCADDADDR"); 1135 } 1136 } 1137 return (0); 1138} 1139 1140int 1141pfctl_add_rule(struct pfctl *pf, struct pf_rule *r, const char *anchor_call) 1142{ 1143 u_int8_t rs_num; 1144 struct pf_rule *rule; 1145 struct pf_ruleset *rs; 1146 char *p; 1147 1148 rs_num = pf_get_ruleset_number(r->action); 1149 if (rs_num == PF_RULESET_MAX) 1150 errx(1, "Invalid rule type %d", r->action); 1151 1152 rs = &pf->anchor->ruleset; 1153 1154 if (anchor_call[0] && r->anchor == NULL) { 1155 /* 1156 * Don't make non-brace anchors part of the main anchor pool. 1157 */ 1158 if ((r->anchor = calloc(1, sizeof(*r->anchor))) == NULL) 1159 err(1, "pfctl_add_rule: calloc"); 1160 1161 pf_init_ruleset(&r->anchor->ruleset); 1162 r->anchor->ruleset.anchor = r->anchor; 1163 if (strlcpy(r->anchor->path, anchor_call, 1164 sizeof(rule->anchor->path)) >= sizeof(rule->anchor->path)) 1165 errx(1, "pfctl_add_rule: strlcpy"); 1166 if ((p = strrchr(anchor_call, '/')) != NULL) { 1167 if (!strlen(p)) 1168 err(1, "pfctl_add_rule: bad anchor name %s", 1169 anchor_call); 1170 } else 1171 p = (char *)anchor_call; 1172 if (strlcpy(r->anchor->name, p, 1173 sizeof(rule->anchor->name)) >= sizeof(rule->anchor->name)) 1174 errx(1, "pfctl_add_rule: strlcpy"); 1175 } 1176 1177 if ((rule = calloc(1, sizeof(*rule))) == NULL) 1178 err(1, "calloc"); 1179 bcopy(r, rule, sizeof(*rule)); 1180 TAILQ_INIT(&rule->rpool.list); 1181 pfctl_move_pool(&r->rpool, &rule->rpool); 1182 1183 TAILQ_INSERT_TAIL(rs->rules[rs_num].active.ptr, rule, entries); 1184 return (0); 1185} 1186 1187int 1188pfctl_ruleset_trans(struct pfctl *pf, char *path, struct pf_anchor *a) 1189{ 1190 int osize = pf->trans->pfrb_size; 1191 1192 if ((pf->loadopt & PFCTL_FLAG_NAT) != 0) { 1193 if (pfctl_add_trans(pf->trans, PF_RULESET_NAT, path) || 1194 pfctl_add_trans(pf->trans, PF_RULESET_BINAT, path) || 1195 pfctl_add_trans(pf->trans, PF_RULESET_RDR, path)) 1196 return (1); 1197 } 1198 if (a == pf->astack[0] && ((altqsupport && 1199 (pf->loadopt & PFCTL_FLAG_ALTQ) != 0))) { 1200 if (pfctl_add_trans(pf->trans, PF_RULESET_ALTQ, path)) 1201 return (2); 1202 } 1203 if ((pf->loadopt & PFCTL_FLAG_FILTER) != 0) { 1204 if (pfctl_add_trans(pf->trans, PF_RULESET_SCRUB, path) || 1205 pfctl_add_trans(pf->trans, PF_RULESET_FILTER, path)) 1206 return (3); 1207 } 1208 if (pf->loadopt & PFCTL_FLAG_TABLE) 1209 if (pfctl_add_trans(pf->trans, PF_RULESET_TABLE, path)) 1210 return (4); 1211 if (pfctl_trans(pf->dev, pf->trans, DIOCXBEGIN, osize)) 1212 return (5); 1213 1214 return (0); 1215} 1216 1217int 1218pfctl_load_ruleset(struct pfctl *pf, char *path, struct pf_ruleset *rs, 1219 int rs_num, int depth) 1220{ 1221 struct pf_rule *r; 1222 int error, len = strlen(path); 1223 int brace = 0; 1224 1225 pf->anchor = rs->anchor; 1226 1227 if (path[0]) 1228 snprintf(&path[len], MAXPATHLEN - len, "/%s", pf->anchor->name); 1229 else 1230 snprintf(&path[len], MAXPATHLEN - len, "%s", pf->anchor->name); 1231 1232 if (depth) { 1233 if (TAILQ_FIRST(rs->rules[rs_num].active.ptr) != NULL) { 1234 brace++; 1235 if (pf->opts & PF_OPT_VERBOSE) 1236 printf(" {\n"); 1237 if ((pf->opts & PF_OPT_NOACTION) == 0 && 1238 (error = pfctl_ruleset_trans(pf, 1239 path, rs->anchor))) { 1240 printf("pfctl_load_rulesets: " 1241 "pfctl_ruleset_trans %d\n", error); 1242 goto error; 1243 } 1244 } else if (pf->opts & PF_OPT_VERBOSE) 1245 printf("\n"); 1246 1247 } 1248 1249 if (pf->optimize && rs_num == PF_RULESET_FILTER) 1250 pfctl_optimize_ruleset(pf, rs); 1251 1252 while ((r = TAILQ_FIRST(rs->rules[rs_num].active.ptr)) != NULL) { 1253 TAILQ_REMOVE(rs->rules[rs_num].active.ptr, r, entries); 1254 if ((error = pfctl_load_rule(pf, path, r, depth))) 1255 goto error; 1256 if (r->anchor) { 1257 if ((error = pfctl_load_ruleset(pf, path, 1258 &r->anchor->ruleset, rs_num, depth + 1))) 1259 goto error; 1260 } else if (pf->opts & PF_OPT_VERBOSE) 1261 printf("\n"); 1262 free(r); 1263 } 1264 if (brace && pf->opts & PF_OPT_VERBOSE) { 1265 INDENT(depth - 1, (pf->opts & PF_OPT_VERBOSE)); 1266 printf("}\n"); 1267 } 1268 path[len] = '\0'; 1269 return (0); 1270 1271 error: 1272 path[len] = '\0'; 1273 return (error); 1274 1275} 1276 1277int 1278pfctl_load_rule(struct pfctl *pf, char *path, struct pf_rule *r, int depth) 1279{ 1280 u_int8_t rs_num = pf_get_ruleset_number(r->action); 1281 char *name; 1282 struct pfioc_rule pr; 1283 int len = strlen(path); 1284 1285 bzero(&pr, sizeof(pr)); 1286 /* set up anchor before adding to path for anchor_call */ 1287 if ((pf->opts & PF_OPT_NOACTION) == 0) 1288 pr.ticket = pfctl_get_ticket(pf->trans, rs_num, path); 1289 if (strlcpy(pr.anchor, path, sizeof(pr.anchor)) >= sizeof(pr.anchor)) 1290 errx(1, "pfctl_load_rule: strlcpy"); 1291 1292 if (r->anchor) { 1293 if (r->anchor->match) { 1294 if (path[0]) 1295 snprintf(&path[len], MAXPATHLEN - len, 1296 "/%s", r->anchor->name); 1297 else 1298 snprintf(&path[len], MAXPATHLEN - len, 1299 "%s", r->anchor->name); 1300 name = path; 1301 } else 1302 name = r->anchor->path; 1303 } else 1304 name = ""; 1305 1306 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1307 if (pfctl_add_pool(pf, &r->rpool, r->af)) 1308 return (1); 1309 pr.pool_ticket = pf->paddr.ticket; 1310 memcpy(&pr.rule, r, sizeof(pr.rule)); 1311 if (r->anchor && strlcpy(pr.anchor_call, name, 1312 sizeof(pr.anchor_call)) >= sizeof(pr.anchor_call)) 1313 errx(1, "pfctl_load_rule: strlcpy"); 1314 if (ioctl(pf->dev, DIOCADDRULE, &pr)) 1315 err(1, "DIOCADDRULE"); 1316 } 1317 1318 if (pf->opts & PF_OPT_VERBOSE) { 1319 INDENT(depth, !(pf->opts & PF_OPT_VERBOSE2)); 1320 print_rule(r, r->anchor ? r->anchor->name : "", 1321 pf->opts & PF_OPT_VERBOSE2); 1322 } 1323 path[len] = '\0'; 1324 pfctl_clear_pool(&r->rpool); 1325 return (0); 1326} 1327 1328int 1329pfctl_add_altq(struct pfctl *pf, struct pf_altq *a) 1330{ 1331 if (altqsupport && 1332 (loadopt & PFCTL_FLAG_ALTQ) != 0) { 1333 memcpy(&pf->paltq->altq, a, sizeof(struct pf_altq)); 1334 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1335 if (ioctl(pf->dev, DIOCADDALTQ, pf->paltq)) { 1336 if (errno == ENXIO) 1337 errx(1, "qtype not configured"); 1338 else if (errno == ENODEV) 1339 errx(1, "%s: driver does not support " 1340 "altq", a->ifname); 1341 else 1342 err(1, "DIOCADDALTQ"); 1343 } 1344 } 1345 pfaltq_store(&pf->paltq->altq); 1346 } 1347 return (0); 1348} 1349 1350int 1351pfctl_rules(int dev, char *filename, FILE *fin, int opts, int optimize, 1352 char *anchorname, struct pfr_buffer *trans) 1353{ 1354#define ERR(x) do { warn(x); goto _error; } while(0) 1355#define ERRX(x) do { warnx(x); goto _error; } while(0) 1356 1357 struct pfr_buffer *t, buf; 1358 struct pfioc_altq pa; 1359 struct pfctl pf; 1360 struct pf_ruleset *rs; 1361 struct pfr_table trs; 1362 char *path; 1363 int osize; 1364 1365 RB_INIT(&pf_anchors); 1366 memset(&pf_main_anchor, 0, sizeof(pf_main_anchor)); 1367 pf_init_ruleset(&pf_main_anchor.ruleset); 1368 pf_main_anchor.ruleset.anchor = &pf_main_anchor; 1369 if (trans == NULL) { 1370 bzero(&buf, sizeof(buf)); 1371 buf.pfrb_type = PFRB_TRANS; 1372 t = &buf; 1373 osize = 0; 1374 } else { 1375 t = trans; 1376 osize = t->pfrb_size; 1377 } 1378 1379 memset(&pa, 0, sizeof(pa)); 1380 memset(&pf, 0, sizeof(pf)); 1381 memset(&trs, 0, sizeof(trs)); 1382 if ((path = calloc(1, MAXPATHLEN)) == NULL) 1383 ERRX("pfctl_rules: calloc"); 1384 if (strlcpy(trs.pfrt_anchor, anchorname, 1385 sizeof(trs.pfrt_anchor)) >= sizeof(trs.pfrt_anchor)) 1386 ERRX("pfctl_rules: strlcpy"); 1387 infile = filename; 1388 pf.dev = dev; 1389 pf.opts = opts; 1390 pf.optimize = optimize; 1391 pf.loadopt = loadopt; 1392 1393 /* non-brace anchor, create without resolving the path */ 1394 if ((pf.anchor = calloc(1, sizeof(*pf.anchor))) == NULL) 1395 ERRX("pfctl_rules: calloc"); 1396 rs = &pf.anchor->ruleset; 1397 pf_init_ruleset(rs); 1398 rs->anchor = pf.anchor; 1399 if (strlcpy(pf.anchor->path, anchorname, 1400 sizeof(pf.anchor->path)) >= sizeof(pf.anchor->path)) 1401 errx(1, "pfctl_add_rule: strlcpy"); 1402 if (strlcpy(pf.anchor->name, anchorname, 1403 sizeof(pf.anchor->name)) >= sizeof(pf.anchor->name)) 1404 errx(1, "pfctl_add_rule: strlcpy"); 1405 1406 1407 pf.astack[0] = pf.anchor; 1408 pf.asd = 0; 1409 if (anchorname[0]) 1410 pf.loadopt &= ~PFCTL_FLAG_ALTQ; 1411 pf.paltq = &pa; 1412 pf.trans = t; 1413 pfctl_init_options(&pf); 1414 1415 if ((opts & PF_OPT_NOACTION) == 0) { 1416 /* 1417 * XXX For the time being we need to open transactions for 1418 * the main ruleset before parsing, because tables are still 1419 * loaded at parse time. 1420 */ 1421 if (pfctl_ruleset_trans(&pf, anchorname, pf.anchor)) 1422 ERRX("pfctl_rules"); 1423 if (altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ)) 1424 pa.ticket = 1425 pfctl_get_ticket(t, PF_RULESET_ALTQ, anchorname); 1426 if (pf.loadopt & PFCTL_FLAG_TABLE) 1427 pf.astack[0]->ruleset.tticket = 1428 pfctl_get_ticket(t, PF_RULESET_TABLE, anchorname); 1429 } 1430 1431 if (parse_rules(fin, &pf) < 0) { 1432 if ((opts & PF_OPT_NOACTION) == 0) 1433 ERRX("Syntax error in config file: " 1434 "pf rules not loaded"); 1435 else 1436 goto _error; 1437 } 1438 1439 if ((pf.loadopt & PFCTL_FLAG_FILTER && 1440 (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_SCRUB, 0))) || 1441 (pf.loadopt & PFCTL_FLAG_NAT && 1442 (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_NAT, 0) || 1443 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_RDR, 0) || 1444 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_BINAT, 0))) || 1445 (pf.loadopt & PFCTL_FLAG_FILTER && 1446 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_FILTER, 0))) { 1447 if ((opts & PF_OPT_NOACTION) == 0) 1448 ERRX("Unable to load rules into kernel"); 1449 else 1450 goto _error; 1451 } 1452 1453 if ((altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ) != 0)) 1454 if (check_commit_altq(dev, opts) != 0) 1455 ERRX("errors in altq config"); 1456 1457 if (fin != stdin) { 1458 fclose(fin); 1459 fin = NULL; 1460 } 1461 1462 /* process "load anchor" directives */ 1463 if (!anchorname[0]) 1464 if (pfctl_load_anchors(dev, &pf, t) == -1) 1465 ERRX("load anchors"); 1466 1467 if (trans == NULL && (opts & PF_OPT_NOACTION) == 0) { 1468 if (!anchorname[0]) 1469 if (pfctl_load_options(&pf)) 1470 goto _error; 1471 if (pfctl_trans(dev, t, DIOCXCOMMIT, osize)) 1472 ERR("DIOCXCOMMIT"); 1473 } 1474 return (0); 1475 1476_error: 1477 if (trans == NULL) { /* main ruleset */ 1478 if ((opts & PF_OPT_NOACTION) == 0) 1479 if (pfctl_trans(dev, t, DIOCXROLLBACK, osize)) 1480 err(1, "DIOCXROLLBACK"); 1481 exit(1); 1482 } else { /* sub ruleset */ 1483 if (fin != NULL && fin != stdin) 1484 fclose(fin); 1485 return (-1); 1486 } 1487 1488#undef ERR 1489#undef ERRX 1490} 1491 1492FILE * 1493pfctl_fopen(const char *name, const char *mode) 1494{ 1495 struct stat st; 1496 FILE *fp; 1497 1498 fp = fopen(name, mode); 1499 if (fp == NULL) 1500 return (NULL); 1501 if (fstat(fileno(fp), &st)) { 1502 fclose(fp); 1503 return (NULL); 1504 } 1505 if (S_ISDIR(st.st_mode)) { 1506 fclose(fp); 1507 errno = EISDIR; 1508 return (NULL); 1509 } 1510 return (fp); 1511} 1512 1513void 1514pfctl_init_options(struct pfctl *pf) 1515{ 1516 int mib[2], mem; 1517 size_t size; 1518 1519 pf->timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL; 1520 pf->timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL; 1521 pf->timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL; 1522 pf->timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL; 1523 pf->timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL; 1524 pf->timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL; 1525 pf->timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL; 1526 pf->timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL; 1527 pf->timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL; 1528 pf->timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL; 1529 pf->timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL; 1530 pf->timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL; 1531 pf->timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL; 1532 pf->timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL; 1533 pf->timeout[PFTM_FRAG] = PFTM_FRAG_VAL; 1534 pf->timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL; 1535 pf->timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL; 1536 pf->timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL; 1537 pf->timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START; 1538 pf->timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END; 1539 1540 pf->limit[PF_LIMIT_STATES] = PFSTATE_HIWAT; 1541 pf->limit[PF_LIMIT_FRAGS] = PFFRAG_FRENT_HIWAT; 1542 pf->limit[PF_LIMIT_SRC_NODES] = PFSNODE_HIWAT; 1543 pf->limit[PF_LIMIT_TABLES] = PFR_KTABLE_HIWAT; 1544 pf->limit[PF_LIMIT_TABLE_ENTRIES] = PFR_KENTRY_HIWAT; 1545 1546 mib[0] = CTL_HW; 1547 mib[1] = HW_PHYSMEM; 1548 size = sizeof(mem); 1549 (void) sysctl(mib, 2, &mem, &size, NULL, 0); 1550 if (mem <= 100*1024*1024) 1551 pf->limit[PF_LIMIT_TABLE_ENTRIES] = PFR_KENTRY_HIWAT_SMALL; 1552 1553 pf->debug = PF_DEBUG_URGENT; 1554} 1555 1556int 1557pfctl_load_options(struct pfctl *pf) 1558{ 1559 int i, error = 0; 1560 1561 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1562 return (0); 1563 1564 /* load limits */ 1565 for (i = 0; i < PF_LIMIT_MAX; i++) { 1566 if ((pf->opts & PF_OPT_MERGE) && !pf->limit_set[i]) 1567 continue; 1568 if (pfctl_load_limit(pf, i, pf->limit[i])) 1569 error = 1; 1570 } 1571 1572 /* 1573 * If we've set the limit, but havn't explicitly set adaptive 1574 * timeouts, do it now with a start of 60% and end of 120%. 1575 */ 1576 if (pf->limit_set[PF_LIMIT_STATES] && 1577 !pf->timeout_set[PFTM_ADAPTIVE_START] && 1578 !pf->timeout_set[PFTM_ADAPTIVE_END]) { 1579 pf->timeout[PFTM_ADAPTIVE_START] = 1580 (pf->limit[PF_LIMIT_STATES] / 10) * 6; 1581 pf->timeout_set[PFTM_ADAPTIVE_START] = 1; 1582 pf->timeout[PFTM_ADAPTIVE_END] = 1583 (pf->limit[PF_LIMIT_STATES] / 10) * 12; 1584 pf->timeout_set[PFTM_ADAPTIVE_END] = 1; 1585 } 1586 1587 /* load timeouts */ 1588 for (i = 0; i < PFTM_MAX; i++) { 1589 if ((pf->opts & PF_OPT_MERGE) && !pf->timeout_set[i]) 1590 continue; 1591 if (pfctl_load_timeout(pf, i, pf->timeout[i])) 1592 error = 1; 1593 } 1594 1595 /* load debug */ 1596 if (!(pf->opts & PF_OPT_MERGE) || pf->debug_set) 1597 if (pfctl_load_debug(pf, pf->debug)) 1598 error = 1; 1599 1600 /* load logif */ 1601 if (!(pf->opts & PF_OPT_MERGE) || pf->ifname_set) 1602 if (pfctl_load_logif(pf, pf->ifname)) 1603 error = 1; 1604 1605 /* load hostid */ 1606 if (!(pf->opts & PF_OPT_MERGE) || pf->hostid_set) 1607 if (pfctl_load_hostid(pf, pf->hostid)) 1608 error = 1; 1609 1610 return (error); 1611} 1612 1613int 1614pfctl_set_limit(struct pfctl *pf, const char *opt, unsigned int limit) 1615{ 1616 int i; 1617 1618 1619 for (i = 0; pf_limits[i].name; i++) { 1620 if (strcasecmp(opt, pf_limits[i].name) == 0) { 1621 pf->limit[pf_limits[i].index] = limit; 1622 pf->limit_set[pf_limits[i].index] = 1; 1623 break; 1624 } 1625 } 1626 if (pf_limits[i].name == NULL) { 1627 warnx("Bad pool name."); 1628 return (1); 1629 } 1630 1631 if (pf->opts & PF_OPT_VERBOSE) 1632 printf("set limit %s %d\n", opt, limit); 1633 1634 return (0); 1635} 1636 1637int 1638pfctl_load_limit(struct pfctl *pf, unsigned int index, unsigned int limit) 1639{ 1640 struct pfioc_limit pl; 1641 1642 memset(&pl, 0, sizeof(pl)); 1643 pl.index = index; 1644 pl.limit = limit; 1645 if (ioctl(pf->dev, DIOCSETLIMIT, &pl)) { 1646 if (errno == EBUSY) 1647 warnx("Current pool size exceeds requested hard limit"); 1648 else 1649 warnx("DIOCSETLIMIT"); 1650 return (1); 1651 } 1652 return (0); 1653} 1654 1655int 1656pfctl_set_timeout(struct pfctl *pf, const char *opt, int seconds, int quiet) 1657{ 1658 int i; 1659 1660 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1661 return (0); 1662 1663 for (i = 0; pf_timeouts[i].name; i++) { 1664 if (strcasecmp(opt, pf_timeouts[i].name) == 0) { 1665 pf->timeout[pf_timeouts[i].timeout] = seconds; 1666 pf->timeout_set[pf_timeouts[i].timeout] = 1; 1667 break; 1668 } 1669 } 1670 1671 if (pf_timeouts[i].name == NULL) { 1672 warnx("Bad timeout name."); 1673 return (1); 1674 } 1675 1676 1677 if (pf->opts & PF_OPT_VERBOSE && ! quiet) 1678 printf("set timeout %s %d\n", opt, seconds); 1679 1680 return (0); 1681} 1682 1683int 1684pfctl_load_timeout(struct pfctl *pf, unsigned int timeout, unsigned int seconds) 1685{ 1686 struct pfioc_tm pt; 1687 1688 memset(&pt, 0, sizeof(pt)); 1689 pt.timeout = timeout; 1690 pt.seconds = seconds; 1691 if (ioctl(pf->dev, DIOCSETTIMEOUT, &pt)) { 1692 warnx("DIOCSETTIMEOUT"); 1693 return (1); 1694 } 1695 return (0); 1696} 1697 1698int 1699pfctl_set_optimization(struct pfctl *pf, const char *opt) 1700{ 1701 const struct pf_hint *hint; 1702 int i, r; 1703 1704 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1705 return (0); 1706 1707 for (i = 0; pf_hints[i].name; i++) 1708 if (strcasecmp(opt, pf_hints[i].name) == 0) 1709 break; 1710 1711 hint = pf_hints[i].hint; 1712 if (hint == NULL) { 1713 warnx("invalid state timeouts optimization"); 1714 return (1); 1715 } 1716 1717 for (i = 0; hint[i].name; i++) 1718 if ((r = pfctl_set_timeout(pf, hint[i].name, 1719 hint[i].timeout, 1))) 1720 return (r); 1721 1722 if (pf->opts & PF_OPT_VERBOSE) 1723 printf("set optimization %s\n", opt); 1724 1725 return (0); 1726} 1727 1728int 1729pfctl_set_logif(struct pfctl *pf, char *ifname) 1730{ 1731 1732 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1733 return (0); 1734 1735 if (!strcmp(ifname, "none")) { 1736 free(pf->ifname); 1737 pf->ifname = NULL; 1738 } else { 1739 pf->ifname = strdup(ifname); 1740 if (!pf->ifname) 1741 errx(1, "pfctl_set_logif: strdup"); 1742 } 1743 pf->ifname_set = 1; 1744 1745 if (pf->opts & PF_OPT_VERBOSE) 1746 printf("set loginterface %s\n", ifname); 1747 1748 return (0); 1749} 1750 1751int 1752pfctl_load_logif(struct pfctl *pf, char *ifname) 1753{ 1754 struct pfioc_if pi; 1755 1756 memset(&pi, 0, sizeof(pi)); 1757 if (ifname && strlcpy(pi.ifname, ifname, 1758 sizeof(pi.ifname)) >= sizeof(pi.ifname)) { 1759 warnx("pfctl_load_logif: strlcpy"); 1760 return (1); 1761 } 1762 if (ioctl(pf->dev, DIOCSETSTATUSIF, &pi)) { 1763 warnx("DIOCSETSTATUSIF"); 1764 return (1); 1765 } 1766 return (0); 1767} 1768 1769int 1770pfctl_set_hostid(struct pfctl *pf, u_int32_t hostid) 1771{ 1772 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1773 return (0); 1774 1775 HTONL(hostid); 1776 1777 pf->hostid = hostid; 1778 pf->hostid_set = 1; 1779 1780 if (pf->opts & PF_OPT_VERBOSE) 1781 printf("set hostid 0x%08x\n", ntohl(hostid)); 1782 1783 return (0); 1784} 1785 1786int 1787pfctl_load_hostid(struct pfctl *pf, u_int32_t hostid) 1788{ 1789 if (ioctl(dev, DIOCSETHOSTID, &hostid)) { 1790 warnx("DIOCSETHOSTID"); 1791 return (1); 1792 } 1793 return (0); 1794} 1795 1796int 1797pfctl_set_debug(struct pfctl *pf, char *d) 1798{ 1799 u_int32_t level; 1800 1801 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1802 return (0); 1803 1804 if (!strcmp(d, "none")) 1805 pf->debug = PF_DEBUG_NONE; 1806 else if (!strcmp(d, "urgent")) 1807 pf->debug = PF_DEBUG_URGENT; 1808 else if (!strcmp(d, "misc")) 1809 pf->debug = PF_DEBUG_MISC; 1810 else if (!strcmp(d, "loud")) 1811 pf->debug = PF_DEBUG_NOISY; 1812 else { 1813 warnx("unknown debug level \"%s\"", d); 1814 return (-1); 1815 } 1816 1817 pf->debug_set = 1; 1818 1819 if ((pf->opts & PF_OPT_NOACTION) == 0) 1820 if (ioctl(dev, DIOCSETDEBUG, &level)) 1821 err(1, "DIOCSETDEBUG"); 1822 1823 if (pf->opts & PF_OPT_VERBOSE) 1824 printf("set debug %s\n", d); 1825 1826 return (0); 1827} 1828 1829int 1830pfctl_load_debug(struct pfctl *pf, unsigned int level) 1831{ 1832 if (ioctl(pf->dev, DIOCSETDEBUG, &level)) { 1833 warnx("DIOCSETDEBUG"); 1834 return (1); 1835 } 1836 return (0); 1837} 1838 1839int 1840pfctl_set_interface_flags(struct pfctl *pf, char *ifname, int flags, int how) 1841{ 1842 struct pfioc_iface pi; 1843 1844 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1845 return (0); 1846 1847 bzero(&pi, sizeof(pi)); 1848 1849 pi.pfiio_flags = flags; 1850 1851 if (strlcpy(pi.pfiio_name, ifname, sizeof(pi.pfiio_name)) >= 1852 sizeof(pi.pfiio_name)) 1853 errx(1, "pfctl_set_interface_flags: strlcpy"); 1854 1855 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1856 if (how == 0) { 1857 if (ioctl(pf->dev, DIOCCLRIFFLAG, &pi)) 1858 err(1, "DIOCCLRIFFLAG"); 1859 } else { 1860 if (ioctl(pf->dev, DIOCSETIFFLAG, &pi)) 1861 err(1, "DIOCSETIFFLAG"); 1862 } 1863 } 1864 return (0); 1865} 1866 1867void 1868pfctl_debug(int dev, u_int32_t level, int opts) 1869{ 1870 if (ioctl(dev, DIOCSETDEBUG, &level)) 1871 err(1, "DIOCSETDEBUG"); 1872 if ((opts & PF_OPT_QUIET) == 0) { 1873 fprintf(stderr, "debug level set to '"); 1874 switch (level) { 1875 case PF_DEBUG_NONE: 1876 fprintf(stderr, "none"); 1877 break; 1878 case PF_DEBUG_URGENT: 1879 fprintf(stderr, "urgent"); 1880 break; 1881 case PF_DEBUG_MISC: 1882 fprintf(stderr, "misc"); 1883 break; 1884 case PF_DEBUG_NOISY: 1885 fprintf(stderr, "loud"); 1886 break; 1887 default: 1888 fprintf(stderr, "<invalid>"); 1889 break; 1890 } 1891 fprintf(stderr, "'\n"); 1892 } 1893} 1894 1895int 1896pfctl_test_altqsupport(int dev, int opts) 1897{ 1898#if defined(__FreeBSD__) && !defined(ENABLE_ALTQ) 1899 return (0); 1900#else 1901 struct pfioc_altq pa; 1902 1903 if (ioctl(dev, DIOCGETALTQS, &pa)) { 1904 if (errno == ENODEV) { 1905 if (!(opts & PF_OPT_QUIET)) 1906 fprintf(stderr, "No ALTQ support in kernel\n" 1907 "ALTQ related functions disabled\n"); 1908 return (0); 1909 } else 1910 err(1, "DIOCGETALTQS"); 1911 } 1912 return (1); 1913#endif 1914} 1915 1916int 1917pfctl_show_anchors(int dev, int opts, char *anchorname) 1918{ 1919 struct pfioc_ruleset pr; 1920 u_int32_t mnr, nr; 1921 1922 memset(&pr, 0, sizeof(pr)); 1923 memcpy(pr.path, anchorname, sizeof(pr.path)); 1924 if (ioctl(dev, DIOCGETRULESETS, &pr)) { 1925 if (errno == EINVAL) 1926 fprintf(stderr, "Anchor '%s' not found.\n", 1927 anchorname); 1928 else 1929 err(1, "DIOCGETRULESETS"); 1930 return (-1); 1931 } 1932 mnr = pr.nr; 1933 for (nr = 0; nr < mnr; ++nr) { 1934 char sub[MAXPATHLEN]; 1935 1936 pr.nr = nr; 1937 if (ioctl(dev, DIOCGETRULESET, &pr)) 1938 err(1, "DIOCGETRULESET"); 1939 if (!strcmp(pr.name, PF_RESERVED_ANCHOR)) 1940 continue; 1941 sub[0] = 0; 1942 if (pr.path[0]) { 1943 strlcat(sub, pr.path, sizeof(sub)); 1944 strlcat(sub, "/", sizeof(sub)); 1945 } 1946 strlcat(sub, pr.name, sizeof(sub)); 1947 if (sub[0] != '_' || (opts & PF_OPT_VERBOSE)) 1948 printf(" %s\n", sub); 1949 if ((opts & PF_OPT_VERBOSE) && pfctl_show_anchors(dev, opts, sub)) 1950 return (-1); 1951 } 1952 return (0); 1953} 1954 1955const char * 1956pfctl_lookup_option(char *cmd, const char **list) 1957{ 1958 if (cmd != NULL && *cmd) 1959 for (; *list; list++) 1960 if (!strncmp(cmd, *list, strlen(cmd))) 1961 return (*list); 1962 return (NULL); 1963} 1964 1965int 1966main(int argc, char *argv[]) 1967{ 1968 int error = 0; 1969 int ch; 1970 int mode = O_RDONLY; 1971 int opts = 0; 1972 int optimize = 0; 1973 char anchorname[MAXPATHLEN]; 1974 char *path; 1975 FILE *fin = NULL; 1976 1977 if (argc < 2) 1978 usage(); 1979 1980 while ((ch = getopt(argc, argv, 1981 "a:AdD:eqf:F:ghi:k:K:mnNOo::p:rRs:t:T:vx:z")) != -1) { 1982 switch (ch) { 1983 case 'a': 1984 anchoropt = optarg; 1985 break; 1986 case 'd': 1987 opts |= PF_OPT_DISABLE; 1988 mode = O_RDWR; 1989 break; 1990 case 'D': 1991 if (pfctl_cmdline_symset(optarg) < 0) 1992 warnx("could not parse macro definition %s", 1993 optarg); 1994 break; 1995 case 'e': 1996 opts |= PF_OPT_ENABLE; 1997 mode = O_RDWR; 1998 break; 1999 case 'q': 2000 opts |= PF_OPT_QUIET; 2001 break; 2002 case 'F': 2003 clearopt = pfctl_lookup_option(optarg, clearopt_list); 2004 if (clearopt == NULL) { 2005 warnx("Unknown flush modifier '%s'", optarg); 2006 usage(); 2007 } 2008 mode = O_RDWR; 2009 break; 2010 case 'i': 2011 ifaceopt = optarg; 2012 break; 2013 case 'k': 2014 if (state_killers >= 2) { 2015 warnx("can only specify -k twice"); 2016 usage(); 2017 /* NOTREACHED */ 2018 } 2019 state_kill[state_killers++] = optarg; 2020 mode = O_RDWR; 2021 break; 2022 case 'K': 2023 if (src_node_killers >= 2) { 2024 warnx("can only specify -K twice"); 2025 usage(); 2026 /* NOTREACHED */ 2027 } 2028 src_node_kill[src_node_killers++] = optarg; 2029 mode = O_RDWR; 2030 break; 2031 case 'm': 2032 opts |= PF_OPT_MERGE; 2033 break; 2034 case 'n': 2035 opts |= PF_OPT_NOACTION; 2036 break; 2037 case 'N': 2038 loadopt |= PFCTL_FLAG_NAT; 2039 break; 2040 case 'r': 2041 opts |= PF_OPT_USEDNS; 2042 break; 2043 case 'f': 2044 rulesopt = optarg; 2045 mode = O_RDWR; 2046 break; 2047 case 'g': 2048 opts |= PF_OPT_DEBUG; 2049 break; 2050 case 'A': 2051 loadopt |= PFCTL_FLAG_ALTQ; 2052 break; 2053 case 'R': 2054 loadopt |= PFCTL_FLAG_FILTER; 2055 break; 2056 case 'o': 2057 if (optarg) { 2058 optiopt = pfctl_lookup_option(optarg, 2059 optiopt_list); 2060 if (optiopt == NULL) { 2061 warnx("Unknown optimization '%s'", 2062 optarg); 2063 usage(); 2064 } 2065 } 2066 if (opts & PF_OPT_OPTIMIZE) { 2067 if (optiopt != NULL) { 2068 warnx("Cannot specify -o multiple times" 2069 "with optimizer level"); 2070 usage(); 2071 } 2072 optimize |= PF_OPTIMIZE_PROFILE; 2073 } 2074 optimize |= PF_OPTIMIZE_BASIC; 2075 opts |= PF_OPT_OPTIMIZE; 2076 break; 2077 case 'O': 2078 loadopt |= PFCTL_FLAG_OPTION; 2079 break; 2080 case 'p': 2081 pf_device = optarg; 2082 break; 2083 case 's': 2084 showopt = pfctl_lookup_option(optarg, showopt_list); 2085 if (showopt == NULL) { 2086 warnx("Unknown show modifier '%s'", optarg); 2087 usage(); 2088 } 2089 break; 2090 case 't': 2091 tableopt = optarg; 2092 break; 2093 case 'T': 2094 tblcmdopt = pfctl_lookup_option(optarg, tblcmdopt_list); 2095 if (tblcmdopt == NULL) { 2096 warnx("Unknown table command '%s'", optarg); 2097 usage(); 2098 } 2099 break; 2100 case 'v': 2101 if (opts & PF_OPT_VERBOSE) 2102 opts |= PF_OPT_VERBOSE2; 2103 opts |= PF_OPT_VERBOSE; 2104 break; 2105 case 'x': 2106 debugopt = pfctl_lookup_option(optarg, debugopt_list); 2107 if (debugopt == NULL) { 2108 warnx("Unknown debug level '%s'", optarg); 2109 usage(); 2110 } 2111 mode = O_RDWR; 2112 break; 2113 case 'z': 2114 opts |= PF_OPT_CLRRULECTRS; 2115 mode = O_RDWR; 2116 break; 2117 case 'h': 2118 /* FALLTHROUGH */ 2119 default: 2120 usage(); 2121 /* NOTREACHED */ 2122 } 2123 } 2124 2125 if (tblcmdopt != NULL) { 2126 argc -= optind; 2127 argv += optind; 2128 ch = *tblcmdopt; 2129 if (ch == 'l') { 2130 loadopt |= PFCTL_FLAG_TABLE; 2131 tblcmdopt = NULL; 2132 } else 2133 mode = strchr("acdefkrz", ch) ? O_RDWR : O_RDONLY; 2134 } else if (argc != optind) { 2135 warnx("unknown command line argument: %s ...", argv[optind]); 2136 usage(); 2137 /* NOTREACHED */ 2138 } 2139 if (loadopt == 0) 2140 loadopt = ~0; 2141 2142 if ((path = calloc(1, MAXPATHLEN)) == NULL) 2143 errx(1, "pfctl: calloc"); 2144 memset(anchorname, 0, sizeof(anchorname)); 2145 if (anchoropt != NULL) { 2146 int len = strlen(anchoropt); 2147 2148 if (anchoropt[len - 1] == '*') { 2149 if (len >= 2 && anchoropt[len - 2] == '/') 2150 anchoropt[len - 2] = '\0'; 2151 else 2152 anchoropt[len - 1] = '\0'; 2153 opts |= PF_OPT_RECURSE; 2154 } 2155 if (strlcpy(anchorname, anchoropt, 2156 sizeof(anchorname)) >= sizeof(anchorname)) 2157 errx(1, "anchor name '%s' too long", 2158 anchoropt); 2159 loadopt &= PFCTL_FLAG_FILTER|PFCTL_FLAG_NAT|PFCTL_FLAG_TABLE; 2160 } 2161 2162 if ((opts & PF_OPT_NOACTION) == 0) { 2163 dev = open(pf_device, mode); 2164 if (dev == -1) 2165 err(1, "%s", pf_device); 2166 altqsupport = pfctl_test_altqsupport(dev, opts); 2167 } else { 2168 dev = open(pf_device, O_RDONLY); 2169 if (dev >= 0) 2170 opts |= PF_OPT_DUMMYACTION; 2171 /* turn off options */ 2172 opts &= ~ (PF_OPT_DISABLE | PF_OPT_ENABLE); 2173 clearopt = showopt = debugopt = NULL; 2174#if defined(__FreeBSD__) && !defined(ENABLE_ALTQ) 2175 altqsupport = 0; 2176#else 2177 altqsupport = 1; 2178#endif 2179 } 2180 2181 if (opts & PF_OPT_DISABLE) 2182 if (pfctl_disable(dev, opts)) 2183 error = 1; 2184 2185 if (showopt != NULL) { 2186 switch (*showopt) { 2187 case 'A': 2188 pfctl_show_anchors(dev, opts, anchorname); 2189 break; 2190 case 'r': 2191 pfctl_load_fingerprints(dev, opts); 2192 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_RULES, 2193 anchorname, 0); 2194 break; 2195 case 'l': 2196 pfctl_load_fingerprints(dev, opts); 2197 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_LABELS, 2198 anchorname, 0); 2199 break; 2200 case 'n': 2201 pfctl_load_fingerprints(dev, opts); 2202 pfctl_show_nat(dev, opts, anchorname); 2203 break; 2204 case 'q': 2205 pfctl_show_altq(dev, ifaceopt, opts, 2206 opts & PF_OPT_VERBOSE2); 2207 break; 2208 case 's': 2209 pfctl_show_states(dev, ifaceopt, opts); 2210 break; 2211 case 'S': 2212 pfctl_show_src_nodes(dev, opts); 2213 break; 2214 case 'i': 2215 pfctl_show_status(dev, opts); 2216 break; 2217 case 't': 2218 pfctl_show_timeouts(dev, opts); 2219 break; 2220 case 'm': 2221 pfctl_show_limits(dev, opts); 2222 break; 2223 case 'a': 2224 opts |= PF_OPT_SHOWALL; 2225 pfctl_load_fingerprints(dev, opts); 2226 2227 pfctl_show_nat(dev, opts, anchorname); 2228 pfctl_show_rules(dev, path, opts, 0, anchorname, 0); 2229 pfctl_show_altq(dev, ifaceopt, opts, 0); 2230 pfctl_show_states(dev, ifaceopt, opts); 2231 pfctl_show_src_nodes(dev, opts); 2232 pfctl_show_status(dev, opts); 2233 pfctl_show_rules(dev, path, opts, 1, anchorname, 0); 2234 pfctl_show_timeouts(dev, opts); 2235 pfctl_show_limits(dev, opts); 2236 pfctl_show_tables(anchorname, opts); 2237 pfctl_show_fingerprints(opts); 2238 break; 2239 case 'T': 2240 pfctl_show_tables(anchorname, opts); 2241 break; 2242 case 'o': 2243 pfctl_load_fingerprints(dev, opts); 2244 pfctl_show_fingerprints(opts); 2245 break; 2246 case 'I': 2247 pfctl_show_ifaces(ifaceopt, opts); 2248 break; 2249 } 2250 } 2251 2252 if ((opts & PF_OPT_CLRRULECTRS) && showopt == NULL) 2253 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_NOTHING, 2254 anchorname, 0); 2255 2256 if (clearopt != NULL) { 2257 if (anchorname[0] == '_' || strstr(anchorname, "/_") != NULL) 2258 errx(1, "anchor names beginning with '_' cannot " 2259 "be modified from the command line"); 2260 2261 switch (*clearopt) { 2262 case 'r': 2263 pfctl_clear_rules(dev, opts, anchorname); 2264 break; 2265 case 'n': 2266 pfctl_clear_nat(dev, opts, anchorname); 2267 break; 2268 case 'q': 2269 pfctl_clear_altq(dev, opts); 2270 break; 2271 case 's': 2272 pfctl_clear_states(dev, ifaceopt, opts); 2273 break; 2274 case 'S': 2275 pfctl_clear_src_nodes(dev, opts); 2276 break; 2277 case 'i': 2278 pfctl_clear_stats(dev, opts); 2279 break; 2280 case 'a': 2281 pfctl_clear_rules(dev, opts, anchorname); 2282 pfctl_clear_nat(dev, opts, anchorname); 2283 pfctl_clear_tables(anchorname, opts); 2284 if (!*anchorname) { 2285 pfctl_clear_altq(dev, opts); 2286 pfctl_clear_states(dev, ifaceopt, opts); 2287 pfctl_clear_src_nodes(dev, opts); 2288 pfctl_clear_stats(dev, opts); 2289 pfctl_clear_fingerprints(dev, opts); 2290 pfctl_clear_interface_flags(dev, opts); 2291 } 2292 break; 2293 case 'o': 2294 pfctl_clear_fingerprints(dev, opts); 2295 break; 2296 case 'T': 2297 pfctl_clear_tables(anchorname, opts); 2298 break; 2299 } 2300 } 2301 if (state_killers) 2302 pfctl_kill_states(dev, ifaceopt, opts); 2303 2304 if (src_node_killers) 2305 pfctl_kill_src_nodes(dev, ifaceopt, opts); 2306 2307 if (tblcmdopt != NULL) { 2308 error = pfctl_command_tables(argc, argv, tableopt, 2309 tblcmdopt, rulesopt, anchorname, opts); 2310 rulesopt = NULL; 2311 } 2312 if (optiopt != NULL) { 2313 switch (*optiopt) { 2314 case 'n': 2315 optimize = 0; 2316 break; 2317 case 'b': 2318 optimize |= PF_OPTIMIZE_BASIC; 2319 break; 2320 case 'o': 2321 case 'p': 2322 optimize |= PF_OPTIMIZE_PROFILE; 2323 break; 2324 } 2325 } 2326 2327 if (rulesopt != NULL) { 2328 if (strcmp(rulesopt, "-") == 0) { 2329 fin = stdin; 2330 rulesopt = "stdin"; 2331 } else { 2332 if ((fin = pfctl_fopen(rulesopt, "r")) == NULL) 2333 err(1, "%s", rulesopt); 2334 } 2335 } 2336 if ((rulesopt != NULL) && (loadopt & PFCTL_FLAG_OPTION) && 2337 !anchorname[0]) 2338 if (pfctl_clear_interface_flags(dev, opts | PF_OPT_QUIET)) 2339 error = 1; 2340 2341 if (rulesopt != NULL && !(opts & (PF_OPT_MERGE|PF_OPT_NOACTION)) && 2342 !anchorname[0] && (loadopt & PFCTL_FLAG_OPTION)) 2343 if (pfctl_file_fingerprints(dev, opts, PF_OSFP_FILE)) 2344 error = 1; 2345 2346 if (rulesopt != NULL) { 2347 if (anchorname[0] == '_' || strstr(anchorname, "/_") != NULL) 2348 errx(1, "anchor names beginning with '_' cannot " 2349 "be modified from the command line"); 2350 if (pfctl_rules(dev, rulesopt, fin, opts, optimize, 2351 anchorname, NULL)) 2352 error = 1; 2353 else if (!(opts & PF_OPT_NOACTION) && 2354 (loadopt & PFCTL_FLAG_TABLE)) 2355 warn_namespace_collision(NULL); 2356 } 2357 2358 if (opts & PF_OPT_ENABLE) 2359 if (pfctl_enable(dev, opts)) 2360 error = 1; 2361 2362 if (debugopt != NULL) { 2363 switch (*debugopt) { 2364 case 'n': 2365 pfctl_debug(dev, PF_DEBUG_NONE, opts); 2366 break; 2367 case 'u': 2368 pfctl_debug(dev, PF_DEBUG_URGENT, opts); 2369 break; 2370 case 'm': 2371 pfctl_debug(dev, PF_DEBUG_MISC, opts); 2372 break; 2373 case 'l': 2374 pfctl_debug(dev, PF_DEBUG_NOISY, opts); 2375 break; 2376 } 2377 } 2378 2379 exit(error); 2380} 2381