1 /* $OpenBSD: pfctl.c,v 1.278 2008/08/31 20:18:17 jmc Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c) 2001 Daniel Hartmeier 7 * Copyright (c) 2002,2003 Henning Brauer 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 14 * - Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * - Redistributions in binary form must reproduce the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer in the documentation and/or other materials provided 19 * with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 * 34 */ 35 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 39 #define PFIOC_USE_LATEST 40 41 #include <sys/types.h> 42 #include <sys/ioctl.h> 43 #include <sys/nv.h> 44 #include <sys/socket.h> 45 #include <sys/stat.h> 46 #include <sys/endian.h> 47 48 #include <net/if.h> 49 #include <netinet/in.h> 50 #include <net/pfvar.h> 51 #include <arpa/inet.h> 52 #include <net/altq/altq.h> 53 #include <sys/sysctl.h> 54 55 #include <err.h> 56 #include <errno.h> 57 #include <fcntl.h> 58 #include <libpfctl.h> 59 #include <limits.h> 60 #include <netdb.h> 61 #include <stdint.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <unistd.h> 66 67 #include "pfctl_parser.h" 68 #include "pfctl.h" 69 70 void usage(void); 71 int pfctl_enable(int, int); 72 int pfctl_disable(int, int); 73 int pfctl_clear_stats(int, int); 74 int pfctl_get_skip_ifaces(void); 75 int pfctl_check_skip_ifaces(char *); 76 int pfctl_adjust_skip_ifaces(struct pfctl *); 77 int pfctl_clear_interface_flags(int, int); 78 int pfctl_clear_rules(int, int, char *); 79 int pfctl_clear_nat(int, int, char *); 80 int pfctl_clear_altq(int, int); 81 int pfctl_clear_src_nodes(int, int); 82 int pfctl_clear_states(int, const char *, int); 83 void pfctl_addrprefix(char *, struct pf_addr *); 84 int pfctl_kill_src_nodes(int, const char *, int); 85 int pfctl_net_kill_states(int, const char *, int); 86 int pfctl_label_kill_states(int, const char *, int); 87 int pfctl_id_kill_states(int, const char *, int); 88 void pfctl_init_options(struct pfctl *); 89 int pfctl_load_options(struct pfctl *); 90 int pfctl_load_limit(struct pfctl *, unsigned int, unsigned int); 91 int pfctl_load_timeout(struct pfctl *, unsigned int, unsigned int); 92 int pfctl_load_debug(struct pfctl *, unsigned int); 93 int pfctl_load_logif(struct pfctl *, char *); 94 int pfctl_load_hostid(struct pfctl *, u_int32_t); 95 int pfctl_get_pool(int, struct pfctl_pool *, u_int32_t, u_int32_t, int, 96 char *); 97 void pfctl_print_rule_counters(struct pfctl_rule *, int); 98 int pfctl_show_rules(int, char *, int, enum pfctl_show, char *, int); 99 int pfctl_show_nat(int, int, char *); 100 int pfctl_show_src_nodes(int, int); 101 int pfctl_show_states(int, const char *, int); 102 int pfctl_show_status(int, int); 103 int pfctl_show_running(int); 104 int pfctl_show_timeouts(int, int); 105 int pfctl_show_limits(int, int); 106 void pfctl_debug(int, u_int32_t, int); 107 int pfctl_test_altqsupport(int, int); 108 int pfctl_show_anchors(int, int, char *); 109 int pfctl_ruleset_trans(struct pfctl *, char *, struct pfctl_anchor *); 110 int pfctl_load_ruleset(struct pfctl *, char *, 111 struct pfctl_ruleset *, int, int); 112 int pfctl_load_rule(struct pfctl *, char *, struct pfctl_rule *, int); 113 const char *pfctl_lookup_option(char *, const char * const *); 114 115 static struct pfctl_anchor_global pf_anchors; 116 static struct pfctl_anchor pf_main_anchor; 117 static struct pfr_buffer skip_b; 118 119 static const char *clearopt; 120 static char *rulesopt; 121 static const char *showopt; 122 static const char *debugopt; 123 static char *anchoropt; 124 static const char *optiopt = NULL; 125 static const char *pf_device = "/dev/pf"; 126 static char *ifaceopt; 127 static char *tableopt; 128 static const char *tblcmdopt; 129 static int src_node_killers; 130 static char *src_node_kill[2]; 131 static int state_killers; 132 static char *state_kill[2]; 133 int loadopt; 134 int altqsupport; 135 136 int dev = -1; 137 static int first_title = 1; 138 static int labels = 0; 139 140 #define INDENT(d, o) do { \ 141 if (o) { \ 142 int i; \ 143 for (i=0; i < d; i++) \ 144 printf(" "); \ 145 } \ 146 } while (0); \ 147 148 149 static const struct { 150 const char *name; 151 int index; 152 } pf_limits[] = { 153 { "states", PF_LIMIT_STATES }, 154 { "src-nodes", PF_LIMIT_SRC_NODES }, 155 { "frags", PF_LIMIT_FRAGS }, 156 { "table-entries", PF_LIMIT_TABLE_ENTRIES }, 157 { NULL, 0 } 158 }; 159 160 struct pf_hint { 161 const char *name; 162 int timeout; 163 }; 164 static const struct pf_hint pf_hint_normal[] = { 165 { "tcp.first", 2 * 60 }, 166 { "tcp.opening", 30 }, 167 { "tcp.established", 24 * 60 * 60 }, 168 { "tcp.closing", 15 * 60 }, 169 { "tcp.finwait", 45 }, 170 { "tcp.closed", 90 }, 171 { "tcp.tsdiff", 30 }, 172 { NULL, 0 } 173 }; 174 static const struct pf_hint pf_hint_satellite[] = { 175 { "tcp.first", 3 * 60 }, 176 { "tcp.opening", 30 + 5 }, 177 { "tcp.established", 24 * 60 * 60 }, 178 { "tcp.closing", 15 * 60 + 5 }, 179 { "tcp.finwait", 45 + 5 }, 180 { "tcp.closed", 90 + 5 }, 181 { "tcp.tsdiff", 60 }, 182 { NULL, 0 } 183 }; 184 static const struct pf_hint pf_hint_conservative[] = { 185 { "tcp.first", 60 * 60 }, 186 { "tcp.opening", 15 * 60 }, 187 { "tcp.established", 5 * 24 * 60 * 60 }, 188 { "tcp.closing", 60 * 60 }, 189 { "tcp.finwait", 10 * 60 }, 190 { "tcp.closed", 3 * 60 }, 191 { "tcp.tsdiff", 60 }, 192 { NULL, 0 } 193 }; 194 static const struct pf_hint pf_hint_aggressive[] = { 195 { "tcp.first", 30 }, 196 { "tcp.opening", 5 }, 197 { "tcp.established", 5 * 60 * 60 }, 198 { "tcp.closing", 60 }, 199 { "tcp.finwait", 30 }, 200 { "tcp.closed", 30 }, 201 { "tcp.tsdiff", 10 }, 202 { NULL, 0 } 203 }; 204 205 static const struct { 206 const char *name; 207 const struct pf_hint *hint; 208 } pf_hints[] = { 209 { "normal", pf_hint_normal }, 210 { "satellite", pf_hint_satellite }, 211 { "high-latency", pf_hint_satellite }, 212 { "conservative", pf_hint_conservative }, 213 { "aggressive", pf_hint_aggressive }, 214 { NULL, NULL } 215 }; 216 217 static const char * const clearopt_list[] = { 218 "nat", "queue", "rules", "Sources", 219 "states", "info", "Tables", "osfp", "all", NULL 220 }; 221 222 static const char * const showopt_list[] = { 223 "nat", "queue", "rules", "Anchors", "Sources", "states", "info", 224 "Interfaces", "labels", "timeouts", "memory", "Tables", "osfp", 225 "Running", "all", NULL 226 }; 227 228 static const char * const tblcmdopt_list[] = { 229 "kill", "flush", "add", "delete", "load", "replace", "show", 230 "test", "zero", "expire", NULL 231 }; 232 233 static const char * const debugopt_list[] = { 234 "none", "urgent", "misc", "loud", NULL 235 }; 236 237 static const char * const optiopt_list[] = { 238 "none", "basic", "profile", NULL 239 }; 240 241 void 242 usage(void) 243 { 244 extern char *__progname; 245 246 fprintf(stderr, 247 "usage: %s [-AdeghmNnOPqRrvz] [-a anchor] [-D macro=value] [-F modifier]\n" 248 "\t[-f file] [-i interface] [-K host | network]\n" 249 "\t[-k host | network | label | id] [-o level] [-p device]\n" 250 "\t[-s modifier] [-t table -T command [address ...]] [-x level]\n", 251 __progname); 252 253 exit(1); 254 } 255 256 int 257 pfctl_enable(int dev, int opts) 258 { 259 if (ioctl(dev, DIOCSTART)) { 260 if (errno == EEXIST) 261 errx(1, "pf already enabled"); 262 else if (errno == ESRCH) 263 errx(1, "pfil registeration failed"); 264 else 265 err(1, "DIOCSTART"); 266 } 267 if ((opts & PF_OPT_QUIET) == 0) 268 fprintf(stderr, "pf enabled\n"); 269 270 if (altqsupport && ioctl(dev, DIOCSTARTALTQ)) 271 if (errno != EEXIST) 272 err(1, "DIOCSTARTALTQ"); 273 274 return (0); 275 } 276 277 int 278 pfctl_disable(int dev, int opts) 279 { 280 if (ioctl(dev, DIOCSTOP)) { 281 if (errno == ENOENT) 282 errx(1, "pf not enabled"); 283 else 284 err(1, "DIOCSTOP"); 285 } 286 if ((opts & PF_OPT_QUIET) == 0) 287 fprintf(stderr, "pf disabled\n"); 288 289 if (altqsupport && ioctl(dev, DIOCSTOPALTQ)) 290 if (errno != ENOENT) 291 err(1, "DIOCSTOPALTQ"); 292 293 return (0); 294 } 295 296 int 297 pfctl_clear_stats(int dev, int opts) 298 { 299 if (ioctl(dev, DIOCCLRSTATUS)) 300 err(1, "DIOCCLRSTATUS"); 301 if ((opts & PF_OPT_QUIET) == 0) 302 fprintf(stderr, "pf: statistics cleared\n"); 303 return (0); 304 } 305 306 int 307 pfctl_get_skip_ifaces(void) 308 { 309 bzero(&skip_b, sizeof(skip_b)); 310 skip_b.pfrb_type = PFRB_IFACES; 311 for (;;) { 312 pfr_buf_grow(&skip_b, skip_b.pfrb_size); 313 skip_b.pfrb_size = skip_b.pfrb_msize; 314 if (pfi_get_ifaces(NULL, skip_b.pfrb_caddr, &skip_b.pfrb_size)) 315 err(1, "pfi_get_ifaces"); 316 if (skip_b.pfrb_size <= skip_b.pfrb_msize) 317 break; 318 } 319 return (0); 320 } 321 322 int 323 pfctl_check_skip_ifaces(char *ifname) 324 { 325 struct pfi_kif *p; 326 struct node_host *h = NULL, *n = NULL; 327 328 PFRB_FOREACH(p, &skip_b) { 329 if (!strcmp(ifname, p->pfik_name) && 330 (p->pfik_flags & PFI_IFLAG_SKIP)) 331 p->pfik_flags &= ~PFI_IFLAG_SKIP; 332 if (!strcmp(ifname, p->pfik_name) && p->pfik_group != NULL) { 333 if ((h = ifa_grouplookup(p->pfik_name, 0)) == NULL) 334 continue; 335 336 for (n = h; n != NULL; n = n->next) { 337 if (p->pfik_ifp == NULL) 338 continue; 339 if (strncmp(p->pfik_name, ifname, IFNAMSIZ)) 340 continue; 341 342 p->pfik_flags &= ~PFI_IFLAG_SKIP; 343 } 344 } 345 } 346 return (0); 347 } 348 349 int 350 pfctl_adjust_skip_ifaces(struct pfctl *pf) 351 { 352 struct pfi_kif *p, *pp; 353 struct node_host *h = NULL, *n = NULL; 354 355 PFRB_FOREACH(p, &skip_b) { 356 if (p->pfik_group == NULL || !(p->pfik_flags & PFI_IFLAG_SKIP)) 357 continue; 358 359 pfctl_set_interface_flags(pf, p->pfik_name, PFI_IFLAG_SKIP, 0); 360 if ((h = ifa_grouplookup(p->pfik_name, 0)) == NULL) 361 continue; 362 363 for (n = h; n != NULL; n = n->next) 364 PFRB_FOREACH(pp, &skip_b) { 365 if (pp->pfik_ifp == NULL) 366 continue; 367 368 if (strncmp(pp->pfik_name, n->ifname, IFNAMSIZ)) 369 continue; 370 371 if (!(pp->pfik_flags & PFI_IFLAG_SKIP)) 372 pfctl_set_interface_flags(pf, 373 pp->pfik_name, PFI_IFLAG_SKIP, 1); 374 if (pp->pfik_flags & PFI_IFLAG_SKIP) 375 pp->pfik_flags &= ~PFI_IFLAG_SKIP; 376 } 377 } 378 379 PFRB_FOREACH(p, &skip_b) { 380 if (p->pfik_ifp == NULL || ! (p->pfik_flags & PFI_IFLAG_SKIP)) 381 continue; 382 383 pfctl_set_interface_flags(pf, p->pfik_name, PFI_IFLAG_SKIP, 0); 384 } 385 386 return (0); 387 } 388 389 int 390 pfctl_clear_interface_flags(int dev, int opts) 391 { 392 struct pfioc_iface pi; 393 394 if ((opts & PF_OPT_NOACTION) == 0) { 395 bzero(&pi, sizeof(pi)); 396 pi.pfiio_flags = PFI_IFLAG_SKIP; 397 398 if (ioctl(dev, DIOCCLRIFFLAG, &pi)) 399 err(1, "DIOCCLRIFFLAG"); 400 if ((opts & PF_OPT_QUIET) == 0) 401 fprintf(stderr, "pf: interface flags reset\n"); 402 } 403 return (0); 404 } 405 406 int 407 pfctl_clear_rules(int dev, int opts, char *anchorname) 408 { 409 struct pfr_buffer t; 410 411 memset(&t, 0, sizeof(t)); 412 t.pfrb_type = PFRB_TRANS; 413 if (pfctl_add_trans(&t, PF_RULESET_SCRUB, anchorname) || 414 pfctl_add_trans(&t, PF_RULESET_FILTER, anchorname) || 415 pfctl_trans(dev, &t, DIOCXBEGIN, 0) || 416 pfctl_trans(dev, &t, DIOCXCOMMIT, 0)) 417 err(1, "pfctl_clear_rules"); 418 if ((opts & PF_OPT_QUIET) == 0) 419 fprintf(stderr, "rules cleared\n"); 420 return (0); 421 } 422 423 int 424 pfctl_clear_nat(int dev, int opts, char *anchorname) 425 { 426 struct pfr_buffer t; 427 428 memset(&t, 0, sizeof(t)); 429 t.pfrb_type = PFRB_TRANS; 430 if (pfctl_add_trans(&t, PF_RULESET_NAT, anchorname) || 431 pfctl_add_trans(&t, PF_RULESET_BINAT, anchorname) || 432 pfctl_add_trans(&t, PF_RULESET_RDR, anchorname) || 433 pfctl_trans(dev, &t, DIOCXBEGIN, 0) || 434 pfctl_trans(dev, &t, DIOCXCOMMIT, 0)) 435 err(1, "pfctl_clear_nat"); 436 if ((opts & PF_OPT_QUIET) == 0) 437 fprintf(stderr, "nat cleared\n"); 438 return (0); 439 } 440 441 int 442 pfctl_clear_altq(int dev, int opts) 443 { 444 struct pfr_buffer t; 445 446 if (!altqsupport) 447 return (-1); 448 memset(&t, 0, sizeof(t)); 449 t.pfrb_type = PFRB_TRANS; 450 if (pfctl_add_trans(&t, PF_RULESET_ALTQ, "") || 451 pfctl_trans(dev, &t, DIOCXBEGIN, 0) || 452 pfctl_trans(dev, &t, DIOCXCOMMIT, 0)) 453 err(1, "pfctl_clear_altq"); 454 if ((opts & PF_OPT_QUIET) == 0) 455 fprintf(stderr, "altq cleared\n"); 456 return (0); 457 } 458 459 int 460 pfctl_clear_src_nodes(int dev, int opts) 461 { 462 if (ioctl(dev, DIOCCLRSRCNODES)) 463 err(1, "DIOCCLRSRCNODES"); 464 if ((opts & PF_OPT_QUIET) == 0) 465 fprintf(stderr, "source tracking entries cleared\n"); 466 return (0); 467 } 468 469 int 470 pfctl_clear_states(int dev, const char *iface, int opts) 471 { 472 struct pfioc_state_kill psk; 473 474 memset(&psk, 0, sizeof(psk)); 475 if (iface != NULL && strlcpy(psk.psk_ifname, iface, 476 sizeof(psk.psk_ifname)) >= sizeof(psk.psk_ifname)) 477 errx(1, "invalid interface: %s", iface); 478 479 if (ioctl(dev, DIOCCLRSTATES, &psk)) 480 err(1, "DIOCCLRSTATES"); 481 if ((opts & PF_OPT_QUIET) == 0) 482 fprintf(stderr, "%d states cleared\n", psk.psk_killed); 483 return (0); 484 } 485 486 void 487 pfctl_addrprefix(char *addr, struct pf_addr *mask) 488 { 489 char *p; 490 const char *errstr; 491 int prefix, ret_ga, q, r; 492 struct addrinfo hints, *res; 493 494 if ((p = strchr(addr, '/')) == NULL) 495 return; 496 497 *p++ = '\0'; 498 prefix = strtonum(p, 0, 128, &errstr); 499 if (errstr) 500 errx(1, "prefix is %s: %s", errstr, p); 501 502 bzero(&hints, sizeof(hints)); 503 /* prefix only with numeric addresses */ 504 hints.ai_flags |= AI_NUMERICHOST; 505 506 if ((ret_ga = getaddrinfo(addr, NULL, &hints, &res))) { 507 errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); 508 /* NOTREACHED */ 509 } 510 511 if (res->ai_family == AF_INET && prefix > 32) 512 errx(1, "prefix too long for AF_INET"); 513 else if (res->ai_family == AF_INET6 && prefix > 128) 514 errx(1, "prefix too long for AF_INET6"); 515 516 q = prefix >> 3; 517 r = prefix & 7; 518 switch (res->ai_family) { 519 case AF_INET: 520 bzero(&mask->v4, sizeof(mask->v4)); 521 mask->v4.s_addr = htonl((u_int32_t) 522 (0xffffffffffULL << (32 - prefix))); 523 break; 524 case AF_INET6: 525 bzero(&mask->v6, sizeof(mask->v6)); 526 if (q > 0) 527 memset((void *)&mask->v6, 0xff, q); 528 if (r > 0) 529 *((u_char *)&mask->v6 + q) = 530 (0xff00 >> r) & 0xff; 531 break; 532 } 533 freeaddrinfo(res); 534 } 535 536 int 537 pfctl_kill_src_nodes(int dev, const char *iface, int opts) 538 { 539 struct pfioc_src_node_kill psnk; 540 struct addrinfo *res[2], *resp[2]; 541 struct sockaddr last_src, last_dst; 542 int killed, sources, dests; 543 int ret_ga; 544 545 killed = sources = dests = 0; 546 547 memset(&psnk, 0, sizeof(psnk)); 548 memset(&psnk.psnk_src.addr.v.a.mask, 0xff, 549 sizeof(psnk.psnk_src.addr.v.a.mask)); 550 memset(&last_src, 0xff, sizeof(last_src)); 551 memset(&last_dst, 0xff, sizeof(last_dst)); 552 553 pfctl_addrprefix(src_node_kill[0], &psnk.psnk_src.addr.v.a.mask); 554 555 if ((ret_ga = getaddrinfo(src_node_kill[0], NULL, NULL, &res[0]))) { 556 errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); 557 /* NOTREACHED */ 558 } 559 for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) { 560 if (resp[0]->ai_addr == NULL) 561 continue; 562 /* We get lots of duplicates. Catch the easy ones */ 563 if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0) 564 continue; 565 last_src = *(struct sockaddr *)resp[0]->ai_addr; 566 567 psnk.psnk_af = resp[0]->ai_family; 568 sources++; 569 570 if (psnk.psnk_af == AF_INET) 571 psnk.psnk_src.addr.v.a.addr.v4 = 572 ((struct sockaddr_in *)resp[0]->ai_addr)->sin_addr; 573 else if (psnk.psnk_af == AF_INET6) 574 psnk.psnk_src.addr.v.a.addr.v6 = 575 ((struct sockaddr_in6 *)resp[0]->ai_addr)-> 576 sin6_addr; 577 else 578 errx(1, "Unknown address family %d", psnk.psnk_af); 579 580 if (src_node_killers > 1) { 581 dests = 0; 582 memset(&psnk.psnk_dst.addr.v.a.mask, 0xff, 583 sizeof(psnk.psnk_dst.addr.v.a.mask)); 584 memset(&last_dst, 0xff, sizeof(last_dst)); 585 pfctl_addrprefix(src_node_kill[1], 586 &psnk.psnk_dst.addr.v.a.mask); 587 if ((ret_ga = getaddrinfo(src_node_kill[1], NULL, NULL, 588 &res[1]))) { 589 errx(1, "getaddrinfo: %s", 590 gai_strerror(ret_ga)); 591 /* NOTREACHED */ 592 } 593 for (resp[1] = res[1]; resp[1]; 594 resp[1] = resp[1]->ai_next) { 595 if (resp[1]->ai_addr == NULL) 596 continue; 597 if (psnk.psnk_af != resp[1]->ai_family) 598 continue; 599 600 if (memcmp(&last_dst, resp[1]->ai_addr, 601 sizeof(last_dst)) == 0) 602 continue; 603 last_dst = *(struct sockaddr *)resp[1]->ai_addr; 604 605 dests++; 606 607 if (psnk.psnk_af == AF_INET) 608 psnk.psnk_dst.addr.v.a.addr.v4 = 609 ((struct sockaddr_in *)resp[1]-> 610 ai_addr)->sin_addr; 611 else if (psnk.psnk_af == AF_INET6) 612 psnk.psnk_dst.addr.v.a.addr.v6 = 613 ((struct sockaddr_in6 *)resp[1]-> 614 ai_addr)->sin6_addr; 615 else 616 errx(1, "Unknown address family %d", 617 psnk.psnk_af); 618 619 if (ioctl(dev, DIOCKILLSRCNODES, &psnk)) 620 err(1, "DIOCKILLSRCNODES"); 621 killed += psnk.psnk_killed; 622 } 623 freeaddrinfo(res[1]); 624 } else { 625 if (ioctl(dev, DIOCKILLSRCNODES, &psnk)) 626 err(1, "DIOCKILLSRCNODES"); 627 killed += psnk.psnk_killed; 628 } 629 } 630 631 freeaddrinfo(res[0]); 632 633 if ((opts & PF_OPT_QUIET) == 0) 634 fprintf(stderr, "killed %d src nodes from %d sources and %d " 635 "destinations\n", killed, sources, dests); 636 return (0); 637 } 638 639 int 640 pfctl_net_kill_states(int dev, const char *iface, int opts) 641 { 642 struct pfioc_state_kill psk; 643 struct addrinfo *res[2], *resp[2]; 644 struct sockaddr last_src, last_dst; 645 int killed, sources, dests; 646 int ret_ga; 647 648 killed = sources = dests = 0; 649 650 memset(&psk, 0, sizeof(psk)); 651 memset(&psk.psk_src.addr.v.a.mask, 0xff, 652 sizeof(psk.psk_src.addr.v.a.mask)); 653 memset(&last_src, 0xff, sizeof(last_src)); 654 memset(&last_dst, 0xff, sizeof(last_dst)); 655 if (iface != NULL && strlcpy(psk.psk_ifname, iface, 656 sizeof(psk.psk_ifname)) >= sizeof(psk.psk_ifname)) 657 errx(1, "invalid interface: %s", iface); 658 659 pfctl_addrprefix(state_kill[0], &psk.psk_src.addr.v.a.mask); 660 661 if ((ret_ga = getaddrinfo(state_kill[0], NULL, NULL, &res[0]))) { 662 errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); 663 /* NOTREACHED */ 664 } 665 for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) { 666 if (resp[0]->ai_addr == NULL) 667 continue; 668 /* We get lots of duplicates. Catch the easy ones */ 669 if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0) 670 continue; 671 last_src = *(struct sockaddr *)resp[0]->ai_addr; 672 673 psk.psk_af = resp[0]->ai_family; 674 sources++; 675 676 if (psk.psk_af == AF_INET) 677 psk.psk_src.addr.v.a.addr.v4 = 678 ((struct sockaddr_in *)resp[0]->ai_addr)->sin_addr; 679 else if (psk.psk_af == AF_INET6) 680 psk.psk_src.addr.v.a.addr.v6 = 681 ((struct sockaddr_in6 *)resp[0]->ai_addr)-> 682 sin6_addr; 683 else 684 errx(1, "Unknown address family %d", psk.psk_af); 685 686 if (state_killers > 1) { 687 dests = 0; 688 memset(&psk.psk_dst.addr.v.a.mask, 0xff, 689 sizeof(psk.psk_dst.addr.v.a.mask)); 690 memset(&last_dst, 0xff, sizeof(last_dst)); 691 pfctl_addrprefix(state_kill[1], 692 &psk.psk_dst.addr.v.a.mask); 693 if ((ret_ga = getaddrinfo(state_kill[1], NULL, NULL, 694 &res[1]))) { 695 errx(1, "getaddrinfo: %s", 696 gai_strerror(ret_ga)); 697 /* NOTREACHED */ 698 } 699 for (resp[1] = res[1]; resp[1]; 700 resp[1] = resp[1]->ai_next) { 701 if (resp[1]->ai_addr == NULL) 702 continue; 703 if (psk.psk_af != resp[1]->ai_family) 704 continue; 705 706 if (memcmp(&last_dst, resp[1]->ai_addr, 707 sizeof(last_dst)) == 0) 708 continue; 709 last_dst = *(struct sockaddr *)resp[1]->ai_addr; 710 711 dests++; 712 713 if (psk.psk_af == AF_INET) 714 psk.psk_dst.addr.v.a.addr.v4 = 715 ((struct sockaddr_in *)resp[1]-> 716 ai_addr)->sin_addr; 717 else if (psk.psk_af == AF_INET6) 718 psk.psk_dst.addr.v.a.addr.v6 = 719 ((struct sockaddr_in6 *)resp[1]-> 720 ai_addr)->sin6_addr; 721 else 722 errx(1, "Unknown address family %d", 723 psk.psk_af); 724 725 if (ioctl(dev, DIOCKILLSTATES, &psk)) 726 err(1, "DIOCKILLSTATES"); 727 killed += psk.psk_killed; 728 } 729 freeaddrinfo(res[1]); 730 } else { 731 if (ioctl(dev, DIOCKILLSTATES, &psk)) 732 err(1, "DIOCKILLSTATES"); 733 killed += psk.psk_killed; 734 } 735 } 736 737 freeaddrinfo(res[0]); 738 739 if ((opts & PF_OPT_QUIET) == 0) 740 fprintf(stderr, "killed %d states from %d sources and %d " 741 "destinations\n", killed, sources, dests); 742 return (0); 743 } 744 745 int 746 pfctl_label_kill_states(int dev, const char *iface, int opts) 747 { 748 struct pfioc_state_kill psk; 749 750 if (state_killers != 2 || (strlen(state_kill[1]) == 0)) { 751 warnx("no label specified"); 752 usage(); 753 } 754 memset(&psk, 0, sizeof(psk)); 755 if (iface != NULL && strlcpy(psk.psk_ifname, iface, 756 sizeof(psk.psk_ifname)) >= sizeof(psk.psk_ifname)) 757 errx(1, "invalid interface: %s", iface); 758 759 if (strlcpy(psk.psk_label, state_kill[1], sizeof(psk.psk_label)) >= 760 sizeof(psk.psk_label)) 761 errx(1, "label too long: %s", state_kill[1]); 762 763 if (ioctl(dev, DIOCKILLSTATES, &psk)) 764 err(1, "DIOCKILLSTATES"); 765 766 if ((opts & PF_OPT_QUIET) == 0) 767 fprintf(stderr, "killed %d states\n", psk.psk_killed); 768 769 return (0); 770 } 771 772 int 773 pfctl_id_kill_states(int dev, const char *iface, int opts) 774 { 775 struct pfioc_state_kill psk; 776 777 if (state_killers != 2 || (strlen(state_kill[1]) == 0)) { 778 warnx("no id specified"); 779 usage(); 780 } 781 782 memset(&psk, 0, sizeof(psk)); 783 if ((sscanf(state_kill[1], "%jx/%x", 784 &psk.psk_pfcmp.id, &psk.psk_pfcmp.creatorid)) == 2) 785 HTONL(psk.psk_pfcmp.creatorid); 786 else if ((sscanf(state_kill[1], "%jx", &psk.psk_pfcmp.id)) == 1) { 787 psk.psk_pfcmp.creatorid = 0; 788 } else { 789 warnx("wrong id format specified"); 790 usage(); 791 } 792 if (psk.psk_pfcmp.id == 0) { 793 warnx("cannot kill id 0"); 794 usage(); 795 } 796 797 psk.psk_pfcmp.id = htobe64(psk.psk_pfcmp.id); 798 if (ioctl(dev, DIOCKILLSTATES, &psk)) 799 err(1, "DIOCKILLSTATES"); 800 801 if ((opts & PF_OPT_QUIET) == 0) 802 fprintf(stderr, "killed %d states\n", psk.psk_killed); 803 804 return (0); 805 } 806 807 int 808 pfctl_get_pool(int dev, struct pfctl_pool *pool, u_int32_t nr, 809 u_int32_t ticket, int r_action, char *anchorname) 810 { 811 struct pfioc_pooladdr pp; 812 struct pf_pooladdr *pa; 813 u_int32_t pnr, mpnr; 814 815 memset(&pp, 0, sizeof(pp)); 816 memcpy(pp.anchor, anchorname, sizeof(pp.anchor)); 817 pp.r_action = r_action; 818 pp.r_num = nr; 819 pp.ticket = ticket; 820 if (ioctl(dev, DIOCGETADDRS, &pp)) { 821 warn("DIOCGETADDRS"); 822 return (-1); 823 } 824 mpnr = pp.nr; 825 TAILQ_INIT(&pool->list); 826 for (pnr = 0; pnr < mpnr; ++pnr) { 827 pp.nr = pnr; 828 if (ioctl(dev, DIOCGETADDR, &pp)) { 829 warn("DIOCGETADDR"); 830 return (-1); 831 } 832 pa = calloc(1, sizeof(struct pf_pooladdr)); 833 if (pa == NULL) 834 err(1, "calloc"); 835 bcopy(&pp.addr, pa, sizeof(struct pf_pooladdr)); 836 TAILQ_INSERT_TAIL(&pool->list, pa, entries); 837 } 838 839 return (0); 840 } 841 842 void 843 pfctl_move_pool(struct pfctl_pool *src, struct pfctl_pool *dst) 844 { 845 struct pf_pooladdr *pa; 846 847 while ((pa = TAILQ_FIRST(&src->list)) != NULL) { 848 TAILQ_REMOVE(&src->list, pa, entries); 849 TAILQ_INSERT_TAIL(&dst->list, pa, entries); 850 } 851 } 852 853 void 854 pfctl_clear_pool(struct pfctl_pool *pool) 855 { 856 struct pf_pooladdr *pa; 857 858 while ((pa = TAILQ_FIRST(&pool->list)) != NULL) { 859 TAILQ_REMOVE(&pool->list, pa, entries); 860 free(pa); 861 } 862 } 863 864 void 865 pfctl_print_rule_counters(struct pfctl_rule *rule, int opts) 866 { 867 if (opts & PF_OPT_DEBUG) { 868 const char *t[PF_SKIP_COUNT] = { "i", "d", "f", 869 "p", "sa", "sp", "da", "dp" }; 870 int i; 871 872 printf(" [ Skip steps: "); 873 for (i = 0; i < PF_SKIP_COUNT; ++i) { 874 if (rule->skip[i].nr == rule->nr + 1) 875 continue; 876 printf("%s=", t[i]); 877 if (rule->skip[i].nr == -1) 878 printf("end "); 879 else 880 printf("%u ", rule->skip[i].nr); 881 } 882 printf("]\n"); 883 884 printf(" [ queue: qname=%s qid=%u pqname=%s pqid=%u ]\n", 885 rule->qname, rule->qid, rule->pqname, rule->pqid); 886 } 887 if (opts & PF_OPT_VERBOSE) { 888 printf(" [ Evaluations: %-8llu Packets: %-8llu " 889 "Bytes: %-10llu States: %-6ju]\n", 890 (unsigned long long)rule->evaluations, 891 (unsigned long long)(rule->packets[0] + 892 rule->packets[1]), 893 (unsigned long long)(rule->bytes[0] + 894 rule->bytes[1]), (uintmax_t)rule->states_cur); 895 if (!(opts & PF_OPT_DEBUG)) 896 printf(" [ Inserted: uid %u pid %u " 897 "State Creations: %-6ju]\n", 898 (unsigned)rule->cuid, (unsigned)rule->cpid, 899 (uintmax_t)rule->states_tot); 900 } 901 } 902 903 void 904 pfctl_print_title(char *title) 905 { 906 if (!first_title) 907 printf("\n"); 908 first_title = 0; 909 printf("%s\n", title); 910 } 911 912 int 913 pfctl_show_rules(int dev, char *path, int opts, enum pfctl_show format, 914 char *anchorname, int depth) 915 { 916 struct pfioc_rule pr; 917 struct pfctl_rule rule; 918 u_int32_t nr, mnr, header = 0; 919 int rule_numbers = opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG); 920 int numeric = opts & PF_OPT_NUMERIC; 921 int len = strlen(path); 922 int brace; 923 char *p; 924 925 if (path[0]) 926 snprintf(&path[len], MAXPATHLEN - len, "/%s", anchorname); 927 else 928 snprintf(&path[len], MAXPATHLEN - len, "%s", anchorname); 929 930 memset(&pr, 0, sizeof(pr)); 931 memcpy(pr.anchor, path, sizeof(pr.anchor)); 932 if (opts & PF_OPT_SHOWALL) { 933 pr.rule.action = PF_PASS; 934 if (ioctl(dev, DIOCGETRULES, &pr)) { 935 warn("DIOCGETRULES"); 936 goto error; 937 } 938 header++; 939 } 940 pr.rule.action = PF_SCRUB; 941 if (ioctl(dev, DIOCGETRULES, &pr)) { 942 warn("DIOCGETRULES"); 943 goto error; 944 } 945 if (opts & PF_OPT_SHOWALL) { 946 if (format == PFCTL_SHOW_RULES && (pr.nr > 0 || header)) 947 pfctl_print_title("FILTER RULES:"); 948 else if (format == PFCTL_SHOW_LABELS && labels) 949 pfctl_print_title("LABEL COUNTERS:"); 950 } 951 mnr = pr.nr; 952 if (opts & PF_OPT_CLRRULECTRS) 953 pr.action = PF_GET_CLR_CNTR; 954 955 for (nr = 0; nr < mnr; ++nr) { 956 pr.nr = nr; 957 if (pfctl_get_rule(dev, nr, pr.ticket, path, PF_SCRUB, 958 &rule, pr.anchor_call)) { 959 warn("DIOCGETRULENV"); 960 goto error; 961 } 962 963 if (pfctl_get_pool(dev, &rule.rpool, 964 nr, pr.ticket, PF_SCRUB, path) != 0) 965 goto error; 966 967 switch (format) { 968 case PFCTL_SHOW_LABELS: 969 break; 970 case PFCTL_SHOW_RULES: 971 if (rule.label[0] && (opts & PF_OPT_SHOWALL)) 972 labels = 1; 973 print_rule(&rule, pr.anchor_call, rule_numbers, numeric); 974 printf("\n"); 975 pfctl_print_rule_counters(&rule, opts); 976 break; 977 case PFCTL_SHOW_NOTHING: 978 break; 979 } 980 pfctl_clear_pool(&rule.rpool); 981 } 982 pr.rule.action = PF_PASS; 983 if (ioctl(dev, DIOCGETRULES, &pr)) { 984 warn("DIOCGETRULES"); 985 goto error; 986 } 987 mnr = pr.nr; 988 for (nr = 0; nr < mnr; ++nr) { 989 pr.nr = nr; 990 if (pfctl_get_rule(dev, nr, pr.ticket, path, PF_PASS, 991 &rule, pr.anchor_call)) { 992 warn("DIOCGETRULE"); 993 goto error; 994 } 995 996 if (pfctl_get_pool(dev, &rule.rpool, 997 nr, pr.ticket, PF_PASS, path) != 0) 998 goto error; 999 1000 switch (format) { 1001 case PFCTL_SHOW_LABELS: 1002 if (rule.label[0]) { 1003 printf("%s %llu %llu %llu %llu" 1004 " %llu %llu %llu %ju\n", 1005 rule.label, 1006 (unsigned long long)rule.evaluations, 1007 (unsigned long long)(rule.packets[0] + 1008 rule.packets[1]), 1009 (unsigned long long)(rule.bytes[0] + 1010 rule.bytes[1]), 1011 (unsigned long long)rule.packets[0], 1012 (unsigned long long)rule.bytes[0], 1013 (unsigned long long)rule.packets[1], 1014 (unsigned long long)rule.bytes[1], 1015 (uintmax_t)rule.states_tot); 1016 } 1017 break; 1018 case PFCTL_SHOW_RULES: 1019 brace = 0; 1020 if (rule.label[0] && (opts & PF_OPT_SHOWALL)) 1021 labels = 1; 1022 INDENT(depth, !(opts & PF_OPT_VERBOSE)); 1023 if (pr.anchor_call[0] && 1024 ((((p = strrchr(pr.anchor_call, '_')) != NULL) && 1025 ((void *)p == (void *)pr.anchor_call || 1026 *(--p) == '/')) || (opts & PF_OPT_RECURSE))) { 1027 brace++; 1028 if ((p = strrchr(pr.anchor_call, '/')) != 1029 NULL) 1030 p++; 1031 else 1032 p = &pr.anchor_call[0]; 1033 } else 1034 p = &pr.anchor_call[0]; 1035 1036 print_rule(&rule, p, rule_numbers, numeric); 1037 if (brace) 1038 printf(" {\n"); 1039 else 1040 printf("\n"); 1041 pfctl_print_rule_counters(&rule, opts); 1042 if (brace) { 1043 pfctl_show_rules(dev, path, opts, format, 1044 p, depth + 1); 1045 INDENT(depth, !(opts & PF_OPT_VERBOSE)); 1046 printf("}\n"); 1047 } 1048 break; 1049 case PFCTL_SHOW_NOTHING: 1050 break; 1051 } 1052 pfctl_clear_pool(&rule.rpool); 1053 } 1054 path[len] = '\0'; 1055 return (0); 1056 1057 error: 1058 path[len] = '\0'; 1059 return (-1); 1060 } 1061 1062 int 1063 pfctl_show_nat(int dev, int opts, char *anchorname) 1064 { 1065 struct pfioc_rule pr; 1066 struct pfctl_rule rule; 1067 u_int32_t mnr, nr; 1068 static int nattype[3] = { PF_NAT, PF_RDR, PF_BINAT }; 1069 int i, dotitle = opts & PF_OPT_SHOWALL; 1070 1071 memset(&pr, 0, sizeof(pr)); 1072 memcpy(pr.anchor, anchorname, sizeof(pr.anchor)); 1073 for (i = 0; i < 3; i++) { 1074 pr.rule.action = nattype[i]; 1075 if (ioctl(dev, DIOCGETRULES, &pr)) { 1076 warn("DIOCGETRULES"); 1077 return (-1); 1078 } 1079 mnr = pr.nr; 1080 for (nr = 0; nr < mnr; ++nr) { 1081 pr.nr = nr; 1082 if (pfctl_get_rule(dev, nr, pr.ticket, anchorname, 1083 nattype[i], &rule, pr.anchor_call)) { 1084 warn("DIOCGETRULE"); 1085 return (-1); 1086 } 1087 if (pfctl_get_pool(dev, &rule.rpool, nr, 1088 pr.ticket, nattype[i], anchorname) != 0) 1089 return (-1); 1090 if (dotitle) { 1091 pfctl_print_title("TRANSLATION RULES:"); 1092 dotitle = 0; 1093 } 1094 print_rule(&rule, pr.anchor_call, 1095 opts & PF_OPT_VERBOSE2, opts & PF_OPT_NUMERIC); 1096 printf("\n"); 1097 pfctl_print_rule_counters(&rule, opts); 1098 pfctl_clear_pool(&rule.rpool); 1099 } 1100 } 1101 return (0); 1102 } 1103 1104 int 1105 pfctl_show_src_nodes(int dev, int opts) 1106 { 1107 struct pfioc_src_nodes psn; 1108 struct pf_src_node *p; 1109 char *inbuf = NULL, *newinbuf = NULL; 1110 unsigned int len = 0; 1111 int i; 1112 1113 memset(&psn, 0, sizeof(psn)); 1114 for (;;) { 1115 psn.psn_len = len; 1116 if (len) { 1117 newinbuf = realloc(inbuf, len); 1118 if (newinbuf == NULL) 1119 err(1, "realloc"); 1120 psn.psn_buf = inbuf = newinbuf; 1121 } 1122 if (ioctl(dev, DIOCGETSRCNODES, &psn) < 0) { 1123 warn("DIOCGETSRCNODES"); 1124 free(inbuf); 1125 return (-1); 1126 } 1127 if (psn.psn_len + sizeof(struct pfioc_src_nodes) < len) 1128 break; 1129 if (len == 0 && psn.psn_len == 0) 1130 goto done; 1131 if (len == 0 && psn.psn_len != 0) 1132 len = psn.psn_len; 1133 if (psn.psn_len == 0) 1134 goto done; /* no src_nodes */ 1135 len *= 2; 1136 } 1137 p = psn.psn_src_nodes; 1138 if (psn.psn_len > 0 && (opts & PF_OPT_SHOWALL)) 1139 pfctl_print_title("SOURCE TRACKING NODES:"); 1140 for (i = 0; i < psn.psn_len; i += sizeof(*p)) { 1141 print_src_node(p, opts); 1142 p++; 1143 } 1144 done: 1145 free(inbuf); 1146 return (0); 1147 } 1148 1149 int 1150 pfctl_show_states(int dev, const char *iface, int opts) 1151 { 1152 struct pfioc_states ps; 1153 struct pfsync_state *p; 1154 char *inbuf = NULL, *newinbuf = NULL; 1155 unsigned int len = 0; 1156 int i, dotitle = (opts & PF_OPT_SHOWALL); 1157 1158 memset(&ps, 0, sizeof(ps)); 1159 for (;;) { 1160 ps.ps_len = len; 1161 if (len) { 1162 newinbuf = realloc(inbuf, len); 1163 if (newinbuf == NULL) 1164 err(1, "realloc"); 1165 ps.ps_buf = inbuf = newinbuf; 1166 } 1167 if (ioctl(dev, DIOCGETSTATES, &ps) < 0) { 1168 warn("DIOCGETSTATES"); 1169 free(inbuf); 1170 return (-1); 1171 } 1172 if (ps.ps_len + sizeof(struct pfioc_states) < len) 1173 break; 1174 if (len == 0 && ps.ps_len == 0) 1175 goto done; 1176 if (len == 0 && ps.ps_len != 0) 1177 len = ps.ps_len; 1178 if (ps.ps_len == 0) 1179 goto done; /* no states */ 1180 len *= 2; 1181 } 1182 p = ps.ps_states; 1183 for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) { 1184 if (iface != NULL && strcmp(p->ifname, iface)) 1185 continue; 1186 if (dotitle) { 1187 pfctl_print_title("STATES:"); 1188 dotitle = 0; 1189 } 1190 print_state(p, opts); 1191 } 1192 done: 1193 free(inbuf); 1194 return (0); 1195 } 1196 1197 int 1198 pfctl_show_status(int dev, int opts) 1199 { 1200 struct pf_status status; 1201 1202 if (ioctl(dev, DIOCGETSTATUS, &status)) { 1203 warn("DIOCGETSTATUS"); 1204 return (-1); 1205 } 1206 if (opts & PF_OPT_SHOWALL) 1207 pfctl_print_title("INFO:"); 1208 print_status(&status, opts); 1209 return (0); 1210 } 1211 1212 int 1213 pfctl_show_running(int dev) 1214 { 1215 struct pf_status status; 1216 1217 if (ioctl(dev, DIOCGETSTATUS, &status)) { 1218 warn("DIOCGETSTATUS"); 1219 return (-1); 1220 } 1221 1222 print_running(&status); 1223 return (!status.running); 1224 } 1225 1226 int 1227 pfctl_show_timeouts(int dev, int opts) 1228 { 1229 struct pfioc_tm pt; 1230 int i; 1231 1232 if (opts & PF_OPT_SHOWALL) 1233 pfctl_print_title("TIMEOUTS:"); 1234 memset(&pt, 0, sizeof(pt)); 1235 for (i = 0; pf_timeouts[i].name; i++) { 1236 pt.timeout = pf_timeouts[i].timeout; 1237 if (ioctl(dev, DIOCGETTIMEOUT, &pt)) 1238 err(1, "DIOCGETTIMEOUT"); 1239 printf("%-20s %10d", pf_timeouts[i].name, pt.seconds); 1240 if (pf_timeouts[i].timeout >= PFTM_ADAPTIVE_START && 1241 pf_timeouts[i].timeout <= PFTM_ADAPTIVE_END) 1242 printf(" states"); 1243 else 1244 printf("s"); 1245 printf("\n"); 1246 } 1247 return (0); 1248 1249 } 1250 1251 int 1252 pfctl_show_limits(int dev, int opts) 1253 { 1254 struct pfioc_limit pl; 1255 int i; 1256 1257 if (opts & PF_OPT_SHOWALL) 1258 pfctl_print_title("LIMITS:"); 1259 memset(&pl, 0, sizeof(pl)); 1260 for (i = 0; pf_limits[i].name; i++) { 1261 pl.index = pf_limits[i].index; 1262 if (ioctl(dev, DIOCGETLIMIT, &pl)) 1263 err(1, "DIOCGETLIMIT"); 1264 printf("%-13s ", pf_limits[i].name); 1265 if (pl.limit == UINT_MAX) 1266 printf("unlimited\n"); 1267 else 1268 printf("hard limit %8u\n", pl.limit); 1269 } 1270 return (0); 1271 } 1272 1273 /* callbacks for rule/nat/rdr/addr */ 1274 int 1275 pfctl_add_pool(struct pfctl *pf, struct pfctl_pool *p, sa_family_t af) 1276 { 1277 struct pf_pooladdr *pa; 1278 1279 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1280 if (ioctl(pf->dev, DIOCBEGINADDRS, &pf->paddr)) 1281 err(1, "DIOCBEGINADDRS"); 1282 } 1283 1284 pf->paddr.af = af; 1285 TAILQ_FOREACH(pa, &p->list, entries) { 1286 memcpy(&pf->paddr.addr, pa, sizeof(struct pf_pooladdr)); 1287 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1288 if (ioctl(pf->dev, DIOCADDADDR, &pf->paddr)) 1289 err(1, "DIOCADDADDR"); 1290 } 1291 } 1292 return (0); 1293 } 1294 1295 int 1296 pfctl_append_rule(struct pfctl *pf, struct pfctl_rule *r, 1297 const char *anchor_call) 1298 { 1299 u_int8_t rs_num; 1300 struct pfctl_rule *rule; 1301 struct pfctl_ruleset *rs; 1302 char *p; 1303 1304 rs_num = pf_get_ruleset_number(r->action); 1305 if (rs_num == PF_RULESET_MAX) 1306 errx(1, "Invalid rule type %d", r->action); 1307 1308 rs = &pf->anchor->ruleset; 1309 1310 if (anchor_call[0] && r->anchor == NULL) { 1311 /* 1312 * Don't make non-brace anchors part of the main anchor pool. 1313 */ 1314 if ((r->anchor = calloc(1, sizeof(*r->anchor))) == NULL) 1315 err(1, "pfctl_append_rule: calloc"); 1316 1317 pf_init_ruleset(&r->anchor->ruleset); 1318 r->anchor->ruleset.anchor = r->anchor; 1319 if (strlcpy(r->anchor->path, anchor_call, 1320 sizeof(rule->anchor->path)) >= sizeof(rule->anchor->path)) 1321 errx(1, "pfctl_append_rule: strlcpy"); 1322 if ((p = strrchr(anchor_call, '/')) != NULL) { 1323 if (!strlen(p)) 1324 err(1, "pfctl_append_rule: bad anchor name %s", 1325 anchor_call); 1326 } else 1327 p = (char *)anchor_call; 1328 if (strlcpy(r->anchor->name, p, 1329 sizeof(rule->anchor->name)) >= sizeof(rule->anchor->name)) 1330 errx(1, "pfctl_append_rule: strlcpy"); 1331 } 1332 1333 if ((rule = calloc(1, sizeof(*rule))) == NULL) 1334 err(1, "calloc"); 1335 bcopy(r, rule, sizeof(*rule)); 1336 TAILQ_INIT(&rule->rpool.list); 1337 pfctl_move_pool(&r->rpool, &rule->rpool); 1338 1339 TAILQ_INSERT_TAIL(rs->rules[rs_num].active.ptr, rule, entries); 1340 return (0); 1341 } 1342 1343 int 1344 pfctl_ruleset_trans(struct pfctl *pf, char *path, struct pfctl_anchor *a) 1345 { 1346 int osize = pf->trans->pfrb_size; 1347 1348 if ((pf->loadopt & PFCTL_FLAG_NAT) != 0) { 1349 if (pfctl_add_trans(pf->trans, PF_RULESET_NAT, path) || 1350 pfctl_add_trans(pf->trans, PF_RULESET_BINAT, path) || 1351 pfctl_add_trans(pf->trans, PF_RULESET_RDR, path)) 1352 return (1); 1353 } 1354 if (a == pf->astack[0] && ((altqsupport && 1355 (pf->loadopt & PFCTL_FLAG_ALTQ) != 0))) { 1356 if (pfctl_add_trans(pf->trans, PF_RULESET_ALTQ, path)) 1357 return (2); 1358 } 1359 if ((pf->loadopt & PFCTL_FLAG_FILTER) != 0) { 1360 if (pfctl_add_trans(pf->trans, PF_RULESET_SCRUB, path) || 1361 pfctl_add_trans(pf->trans, PF_RULESET_FILTER, path)) 1362 return (3); 1363 } 1364 if (pf->loadopt & PFCTL_FLAG_TABLE) 1365 if (pfctl_add_trans(pf->trans, PF_RULESET_TABLE, path)) 1366 return (4); 1367 if (pfctl_trans(pf->dev, pf->trans, DIOCXBEGIN, osize)) 1368 return (5); 1369 1370 return (0); 1371 } 1372 1373 int 1374 pfctl_load_ruleset(struct pfctl *pf, char *path, struct pfctl_ruleset *rs, 1375 int rs_num, int depth) 1376 { 1377 struct pfctl_rule *r; 1378 int error, len = strlen(path); 1379 int brace = 0; 1380 1381 pf->anchor = rs->anchor; 1382 1383 if (path[0]) 1384 snprintf(&path[len], MAXPATHLEN - len, "/%s", pf->anchor->name); 1385 else 1386 snprintf(&path[len], MAXPATHLEN - len, "%s", pf->anchor->name); 1387 1388 if (depth) { 1389 if (TAILQ_FIRST(rs->rules[rs_num].active.ptr) != NULL) { 1390 brace++; 1391 if (pf->opts & PF_OPT_VERBOSE) 1392 printf(" {\n"); 1393 if ((pf->opts & PF_OPT_NOACTION) == 0 && 1394 (error = pfctl_ruleset_trans(pf, 1395 path, rs->anchor))) { 1396 printf("pfctl_load_rulesets: " 1397 "pfctl_ruleset_trans %d\n", error); 1398 goto error; 1399 } 1400 } else if (pf->opts & PF_OPT_VERBOSE) 1401 printf("\n"); 1402 1403 } 1404 1405 if (pf->optimize && rs_num == PF_RULESET_FILTER) 1406 pfctl_optimize_ruleset(pf, rs); 1407 1408 while ((r = TAILQ_FIRST(rs->rules[rs_num].active.ptr)) != NULL) { 1409 TAILQ_REMOVE(rs->rules[rs_num].active.ptr, r, entries); 1410 if ((error = pfctl_load_rule(pf, path, r, depth))) 1411 goto error; 1412 if (r->anchor) { 1413 if ((error = pfctl_load_ruleset(pf, path, 1414 &r->anchor->ruleset, rs_num, depth + 1))) 1415 goto error; 1416 } else if (pf->opts & PF_OPT_VERBOSE) 1417 printf("\n"); 1418 free(r); 1419 } 1420 if (brace && pf->opts & PF_OPT_VERBOSE) { 1421 INDENT(depth - 1, (pf->opts & PF_OPT_VERBOSE)); 1422 printf("}\n"); 1423 } 1424 path[len] = '\0'; 1425 return (0); 1426 1427 error: 1428 path[len] = '\0'; 1429 return (error); 1430 1431 } 1432 1433 int 1434 pfctl_load_rule(struct pfctl *pf, char *path, struct pfctl_rule *r, int depth) 1435 { 1436 u_int8_t rs_num = pf_get_ruleset_number(r->action); 1437 char *name; 1438 u_int32_t ticket; 1439 char anchor[PF_ANCHOR_NAME_SIZE]; 1440 int len = strlen(path); 1441 1442 /* set up anchor before adding to path for anchor_call */ 1443 if ((pf->opts & PF_OPT_NOACTION) == 0) 1444 ticket = pfctl_get_ticket(pf->trans, rs_num, path); 1445 if (strlcpy(anchor, path, sizeof(anchor)) >= sizeof(anchor)) 1446 errx(1, "pfctl_load_rule: strlcpy"); 1447 1448 if (r->anchor) { 1449 if (r->anchor->match) { 1450 if (path[0]) 1451 snprintf(&path[len], MAXPATHLEN - len, 1452 "/%s", r->anchor->name); 1453 else 1454 snprintf(&path[len], MAXPATHLEN - len, 1455 "%s", r->anchor->name); 1456 name = r->anchor->name; 1457 } else 1458 name = r->anchor->path; 1459 } else 1460 name = ""; 1461 1462 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1463 if (pfctl_add_pool(pf, &r->rpool, r->af)) 1464 return (1); 1465 if (pfctl_add_rule(pf->dev, r, anchor, name, ticket, 1466 pf->paddr.ticket)) 1467 err(1, "DIOCADDRULENV"); 1468 } 1469 1470 if (pf->opts & PF_OPT_VERBOSE) { 1471 INDENT(depth, !(pf->opts & PF_OPT_VERBOSE2)); 1472 print_rule(r, r->anchor ? r->anchor->name : "", 1473 pf->opts & PF_OPT_VERBOSE2, 1474 pf->opts & PF_OPT_NUMERIC); 1475 } 1476 path[len] = '\0'; 1477 pfctl_clear_pool(&r->rpool); 1478 return (0); 1479 } 1480 1481 int 1482 pfctl_add_altq(struct pfctl *pf, struct pf_altq *a) 1483 { 1484 if (altqsupport && 1485 (loadopt & PFCTL_FLAG_ALTQ) != 0) { 1486 memcpy(&pf->paltq->altq, a, sizeof(struct pf_altq)); 1487 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1488 if (ioctl(pf->dev, DIOCADDALTQ, pf->paltq)) { 1489 if (errno == ENXIO) 1490 errx(1, "qtype not configured"); 1491 else if (errno == ENODEV) 1492 errx(1, "%s: driver does not support " 1493 "altq", a->ifname); 1494 else 1495 err(1, "DIOCADDALTQ"); 1496 } 1497 } 1498 pfaltq_store(&pf->paltq->altq); 1499 } 1500 return (0); 1501 } 1502 1503 int 1504 pfctl_rules(int dev, char *filename, int opts, int optimize, 1505 char *anchorname, struct pfr_buffer *trans) 1506 { 1507 #define ERR(x) do { warn(x); goto _error; } while(0) 1508 #define ERRX(x) do { warnx(x); goto _error; } while(0) 1509 1510 struct pfr_buffer *t, buf; 1511 struct pfioc_altq pa; 1512 struct pfctl pf; 1513 struct pfctl_ruleset *rs; 1514 struct pfr_table trs; 1515 char *path; 1516 int osize; 1517 1518 RB_INIT(&pf_anchors); 1519 memset(&pf_main_anchor, 0, sizeof(pf_main_anchor)); 1520 pf_init_ruleset(&pf_main_anchor.ruleset); 1521 pf_main_anchor.ruleset.anchor = &pf_main_anchor; 1522 if (trans == NULL) { 1523 bzero(&buf, sizeof(buf)); 1524 buf.pfrb_type = PFRB_TRANS; 1525 t = &buf; 1526 osize = 0; 1527 } else { 1528 t = trans; 1529 osize = t->pfrb_size; 1530 } 1531 1532 memset(&pa, 0, sizeof(pa)); 1533 pa.version = PFIOC_ALTQ_VERSION; 1534 memset(&pf, 0, sizeof(pf)); 1535 memset(&trs, 0, sizeof(trs)); 1536 if ((path = calloc(1, MAXPATHLEN)) == NULL) 1537 ERRX("pfctl_rules: calloc"); 1538 if (strlcpy(trs.pfrt_anchor, anchorname, 1539 sizeof(trs.pfrt_anchor)) >= sizeof(trs.pfrt_anchor)) 1540 ERRX("pfctl_rules: strlcpy"); 1541 pf.dev = dev; 1542 pf.opts = opts; 1543 pf.optimize = optimize; 1544 pf.loadopt = loadopt; 1545 1546 /* non-brace anchor, create without resolving the path */ 1547 if ((pf.anchor = calloc(1, sizeof(*pf.anchor))) == NULL) 1548 ERRX("pfctl_rules: calloc"); 1549 rs = &pf.anchor->ruleset; 1550 pf_init_ruleset(rs); 1551 rs->anchor = pf.anchor; 1552 if (strlcpy(pf.anchor->path, anchorname, 1553 sizeof(pf.anchor->path)) >= sizeof(pf.anchor->path)) 1554 errx(1, "pfctl_add_rule: strlcpy"); 1555 if (strlcpy(pf.anchor->name, anchorname, 1556 sizeof(pf.anchor->name)) >= sizeof(pf.anchor->name)) 1557 errx(1, "pfctl_add_rule: strlcpy"); 1558 1559 1560 pf.astack[0] = pf.anchor; 1561 pf.asd = 0; 1562 if (anchorname[0]) 1563 pf.loadopt &= ~PFCTL_FLAG_ALTQ; 1564 pf.paltq = &pa; 1565 pf.trans = t; 1566 pfctl_init_options(&pf); 1567 1568 if ((opts & PF_OPT_NOACTION) == 0) { 1569 /* 1570 * XXX For the time being we need to open transactions for 1571 * the main ruleset before parsing, because tables are still 1572 * loaded at parse time. 1573 */ 1574 if (pfctl_ruleset_trans(&pf, anchorname, pf.anchor)) 1575 ERRX("pfctl_rules"); 1576 if (altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ)) 1577 pa.ticket = 1578 pfctl_get_ticket(t, PF_RULESET_ALTQ, anchorname); 1579 if (pf.loadopt & PFCTL_FLAG_TABLE) 1580 pf.astack[0]->ruleset.tticket = 1581 pfctl_get_ticket(t, PF_RULESET_TABLE, anchorname); 1582 } 1583 1584 if (parse_config(filename, &pf) < 0) { 1585 if ((opts & PF_OPT_NOACTION) == 0) 1586 ERRX("Syntax error in config file: " 1587 "pf rules not loaded"); 1588 else 1589 goto _error; 1590 } 1591 if (loadopt & PFCTL_FLAG_OPTION) 1592 pfctl_adjust_skip_ifaces(&pf); 1593 1594 if ((pf.loadopt & PFCTL_FLAG_FILTER && 1595 (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_SCRUB, 0))) || 1596 (pf.loadopt & PFCTL_FLAG_NAT && 1597 (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_NAT, 0) || 1598 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_RDR, 0) || 1599 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_BINAT, 0))) || 1600 (pf.loadopt & PFCTL_FLAG_FILTER && 1601 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_FILTER, 0))) { 1602 if ((opts & PF_OPT_NOACTION) == 0) 1603 ERRX("Unable to load rules into kernel"); 1604 else 1605 goto _error; 1606 } 1607 1608 if ((altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ) != 0)) 1609 if (check_commit_altq(dev, opts) != 0) 1610 ERRX("errors in altq config"); 1611 1612 /* process "load anchor" directives */ 1613 if (!anchorname[0]) 1614 if (pfctl_load_anchors(dev, &pf, t) == -1) 1615 ERRX("load anchors"); 1616 1617 if (trans == NULL && (opts & PF_OPT_NOACTION) == 0) { 1618 if (!anchorname[0]) 1619 if (pfctl_load_options(&pf)) 1620 goto _error; 1621 if (pfctl_trans(dev, t, DIOCXCOMMIT, osize)) 1622 ERR("DIOCXCOMMIT"); 1623 } 1624 free(path); 1625 return (0); 1626 1627 _error: 1628 if (trans == NULL) { /* main ruleset */ 1629 if ((opts & PF_OPT_NOACTION) == 0) 1630 if (pfctl_trans(dev, t, DIOCXROLLBACK, osize)) 1631 err(1, "DIOCXROLLBACK"); 1632 exit(1); 1633 } else { /* sub ruleset */ 1634 free(path); 1635 return (-1); 1636 } 1637 1638 #undef ERR 1639 #undef ERRX 1640 } 1641 1642 FILE * 1643 pfctl_fopen(const char *name, const char *mode) 1644 { 1645 struct stat st; 1646 FILE *fp; 1647 1648 fp = fopen(name, mode); 1649 if (fp == NULL) 1650 return (NULL); 1651 if (fstat(fileno(fp), &st)) { 1652 fclose(fp); 1653 return (NULL); 1654 } 1655 if (S_ISDIR(st.st_mode)) { 1656 fclose(fp); 1657 errno = EISDIR; 1658 return (NULL); 1659 } 1660 return (fp); 1661 } 1662 1663 void 1664 pfctl_init_options(struct pfctl *pf) 1665 { 1666 1667 pf->timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL; 1668 pf->timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL; 1669 pf->timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL; 1670 pf->timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL; 1671 pf->timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL; 1672 pf->timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL; 1673 pf->timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL; 1674 pf->timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL; 1675 pf->timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL; 1676 pf->timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL; 1677 pf->timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL; 1678 pf->timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL; 1679 pf->timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL; 1680 pf->timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL; 1681 pf->timeout[PFTM_FRAG] = PFTM_FRAG_VAL; 1682 pf->timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL; 1683 pf->timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL; 1684 pf->timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL; 1685 pf->timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START; 1686 pf->timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END; 1687 1688 pf->limit[PF_LIMIT_STATES] = PFSTATE_HIWAT; 1689 pf->limit[PF_LIMIT_FRAGS] = PFFRAG_FRENT_HIWAT; 1690 pf->limit[PF_LIMIT_SRC_NODES] = PFSNODE_HIWAT; 1691 pf->limit[PF_LIMIT_TABLE_ENTRIES] = PFR_KENTRY_HIWAT; 1692 1693 pf->debug = PF_DEBUG_URGENT; 1694 } 1695 1696 int 1697 pfctl_load_options(struct pfctl *pf) 1698 { 1699 int i, error = 0; 1700 1701 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1702 return (0); 1703 1704 /* load limits */ 1705 for (i = 0; i < PF_LIMIT_MAX; i++) { 1706 if ((pf->opts & PF_OPT_MERGE) && !pf->limit_set[i]) 1707 continue; 1708 if (pfctl_load_limit(pf, i, pf->limit[i])) 1709 error = 1; 1710 } 1711 1712 /* 1713 * If we've set the limit, but haven't explicitly set adaptive 1714 * timeouts, do it now with a start of 60% and end of 120%. 1715 */ 1716 if (pf->limit_set[PF_LIMIT_STATES] && 1717 !pf->timeout_set[PFTM_ADAPTIVE_START] && 1718 !pf->timeout_set[PFTM_ADAPTIVE_END]) { 1719 pf->timeout[PFTM_ADAPTIVE_START] = 1720 (pf->limit[PF_LIMIT_STATES] / 10) * 6; 1721 pf->timeout_set[PFTM_ADAPTIVE_START] = 1; 1722 pf->timeout[PFTM_ADAPTIVE_END] = 1723 (pf->limit[PF_LIMIT_STATES] / 10) * 12; 1724 pf->timeout_set[PFTM_ADAPTIVE_END] = 1; 1725 } 1726 1727 /* load timeouts */ 1728 for (i = 0; i < PFTM_MAX; i++) { 1729 if ((pf->opts & PF_OPT_MERGE) && !pf->timeout_set[i]) 1730 continue; 1731 if (pfctl_load_timeout(pf, i, pf->timeout[i])) 1732 error = 1; 1733 } 1734 1735 /* load debug */ 1736 if (!(pf->opts & PF_OPT_MERGE) || pf->debug_set) 1737 if (pfctl_load_debug(pf, pf->debug)) 1738 error = 1; 1739 1740 /* load logif */ 1741 if (!(pf->opts & PF_OPT_MERGE) || pf->ifname_set) 1742 if (pfctl_load_logif(pf, pf->ifname)) 1743 error = 1; 1744 1745 /* load hostid */ 1746 if (!(pf->opts & PF_OPT_MERGE) || pf->hostid_set) 1747 if (pfctl_load_hostid(pf, pf->hostid)) 1748 error = 1; 1749 1750 return (error); 1751 } 1752 1753 int 1754 pfctl_set_limit(struct pfctl *pf, const char *opt, unsigned int limit) 1755 { 1756 int i; 1757 1758 1759 for (i = 0; pf_limits[i].name; i++) { 1760 if (strcasecmp(opt, pf_limits[i].name) == 0) { 1761 pf->limit[pf_limits[i].index] = limit; 1762 pf->limit_set[pf_limits[i].index] = 1; 1763 break; 1764 } 1765 } 1766 if (pf_limits[i].name == NULL) { 1767 warnx("Bad pool name."); 1768 return (1); 1769 } 1770 1771 if (pf->opts & PF_OPT_VERBOSE) 1772 printf("set limit %s %d\n", opt, limit); 1773 1774 return (0); 1775 } 1776 1777 int 1778 pfctl_load_limit(struct pfctl *pf, unsigned int index, unsigned int limit) 1779 { 1780 struct pfioc_limit pl; 1781 1782 memset(&pl, 0, sizeof(pl)); 1783 pl.index = index; 1784 pl.limit = limit; 1785 if (ioctl(pf->dev, DIOCSETLIMIT, &pl)) { 1786 if (errno == EBUSY) 1787 warnx("Current pool size exceeds requested hard limit"); 1788 else 1789 warnx("DIOCSETLIMIT"); 1790 return (1); 1791 } 1792 return (0); 1793 } 1794 1795 int 1796 pfctl_set_timeout(struct pfctl *pf, const char *opt, int seconds, int quiet) 1797 { 1798 int i; 1799 1800 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1801 return (0); 1802 1803 for (i = 0; pf_timeouts[i].name; i++) { 1804 if (strcasecmp(opt, pf_timeouts[i].name) == 0) { 1805 pf->timeout[pf_timeouts[i].timeout] = seconds; 1806 pf->timeout_set[pf_timeouts[i].timeout] = 1; 1807 break; 1808 } 1809 } 1810 1811 if (pf_timeouts[i].name == NULL) { 1812 warnx("Bad timeout name."); 1813 return (1); 1814 } 1815 1816 1817 if (pf->opts & PF_OPT_VERBOSE && ! quiet) 1818 printf("set timeout %s %d\n", opt, seconds); 1819 1820 return (0); 1821 } 1822 1823 int 1824 pfctl_load_timeout(struct pfctl *pf, unsigned int timeout, unsigned int seconds) 1825 { 1826 struct pfioc_tm pt; 1827 1828 memset(&pt, 0, sizeof(pt)); 1829 pt.timeout = timeout; 1830 pt.seconds = seconds; 1831 if (ioctl(pf->dev, DIOCSETTIMEOUT, &pt)) { 1832 warnx("DIOCSETTIMEOUT"); 1833 return (1); 1834 } 1835 return (0); 1836 } 1837 1838 int 1839 pfctl_set_optimization(struct pfctl *pf, const char *opt) 1840 { 1841 const struct pf_hint *hint; 1842 int i, r; 1843 1844 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1845 return (0); 1846 1847 for (i = 0; pf_hints[i].name; i++) 1848 if (strcasecmp(opt, pf_hints[i].name) == 0) 1849 break; 1850 1851 hint = pf_hints[i].hint; 1852 if (hint == NULL) { 1853 warnx("invalid state timeouts optimization"); 1854 return (1); 1855 } 1856 1857 for (i = 0; hint[i].name; i++) 1858 if ((r = pfctl_set_timeout(pf, hint[i].name, 1859 hint[i].timeout, 1))) 1860 return (r); 1861 1862 if (pf->opts & PF_OPT_VERBOSE) 1863 printf("set optimization %s\n", opt); 1864 1865 return (0); 1866 } 1867 1868 int 1869 pfctl_set_logif(struct pfctl *pf, char *ifname) 1870 { 1871 1872 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1873 return (0); 1874 1875 if (!strcmp(ifname, "none")) { 1876 free(pf->ifname); 1877 pf->ifname = NULL; 1878 } else { 1879 pf->ifname = strdup(ifname); 1880 if (!pf->ifname) 1881 errx(1, "pfctl_set_logif: strdup"); 1882 } 1883 pf->ifname_set = 1; 1884 1885 if (pf->opts & PF_OPT_VERBOSE) 1886 printf("set loginterface %s\n", ifname); 1887 1888 return (0); 1889 } 1890 1891 int 1892 pfctl_load_logif(struct pfctl *pf, char *ifname) 1893 { 1894 struct pfioc_if pi; 1895 1896 memset(&pi, 0, sizeof(pi)); 1897 if (ifname && strlcpy(pi.ifname, ifname, 1898 sizeof(pi.ifname)) >= sizeof(pi.ifname)) { 1899 warnx("pfctl_load_logif: strlcpy"); 1900 return (1); 1901 } 1902 if (ioctl(pf->dev, DIOCSETSTATUSIF, &pi)) { 1903 warnx("DIOCSETSTATUSIF"); 1904 return (1); 1905 } 1906 return (0); 1907 } 1908 1909 int 1910 pfctl_set_hostid(struct pfctl *pf, u_int32_t hostid) 1911 { 1912 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1913 return (0); 1914 1915 HTONL(hostid); 1916 1917 pf->hostid = hostid; 1918 pf->hostid_set = 1; 1919 1920 if (pf->opts & PF_OPT_VERBOSE) 1921 printf("set hostid 0x%08x\n", ntohl(hostid)); 1922 1923 return (0); 1924 } 1925 1926 int 1927 pfctl_load_hostid(struct pfctl *pf, u_int32_t hostid) 1928 { 1929 if (ioctl(dev, DIOCSETHOSTID, &hostid)) { 1930 warnx("DIOCSETHOSTID"); 1931 return (1); 1932 } 1933 return (0); 1934 } 1935 1936 int 1937 pfctl_set_debug(struct pfctl *pf, char *d) 1938 { 1939 u_int32_t level; 1940 1941 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1942 return (0); 1943 1944 if (!strcmp(d, "none")) 1945 pf->debug = PF_DEBUG_NONE; 1946 else if (!strcmp(d, "urgent")) 1947 pf->debug = PF_DEBUG_URGENT; 1948 else if (!strcmp(d, "misc")) 1949 pf->debug = PF_DEBUG_MISC; 1950 else if (!strcmp(d, "loud")) 1951 pf->debug = PF_DEBUG_NOISY; 1952 else { 1953 warnx("unknown debug level \"%s\"", d); 1954 return (-1); 1955 } 1956 1957 pf->debug_set = 1; 1958 level = pf->debug; 1959 1960 if ((pf->opts & PF_OPT_NOACTION) == 0) 1961 if (ioctl(dev, DIOCSETDEBUG, &level)) 1962 err(1, "DIOCSETDEBUG"); 1963 1964 if (pf->opts & PF_OPT_VERBOSE) 1965 printf("set debug %s\n", d); 1966 1967 return (0); 1968 } 1969 1970 int 1971 pfctl_load_debug(struct pfctl *pf, unsigned int level) 1972 { 1973 if (ioctl(pf->dev, DIOCSETDEBUG, &level)) { 1974 warnx("DIOCSETDEBUG"); 1975 return (1); 1976 } 1977 return (0); 1978 } 1979 1980 int 1981 pfctl_set_interface_flags(struct pfctl *pf, char *ifname, int flags, int how) 1982 { 1983 struct pfioc_iface pi; 1984 struct node_host *h = NULL, *n = NULL; 1985 1986 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1987 return (0); 1988 1989 bzero(&pi, sizeof(pi)); 1990 1991 pi.pfiio_flags = flags; 1992 1993 /* Make sure our cache matches the kernel. If we set or clear the flag 1994 * for a group this applies to all members. */ 1995 h = ifa_grouplookup(ifname, 0); 1996 for (n = h; n != NULL; n = n->next) 1997 pfctl_set_interface_flags(pf, n->ifname, flags, how); 1998 1999 if (strlcpy(pi.pfiio_name, ifname, sizeof(pi.pfiio_name)) >= 2000 sizeof(pi.pfiio_name)) 2001 errx(1, "pfctl_set_interface_flags: strlcpy"); 2002 2003 if ((pf->opts & PF_OPT_NOACTION) == 0) { 2004 if (how == 0) { 2005 if (ioctl(pf->dev, DIOCCLRIFFLAG, &pi)) 2006 err(1, "DIOCCLRIFFLAG"); 2007 } else { 2008 if (ioctl(pf->dev, DIOCSETIFFLAG, &pi)) 2009 err(1, "DIOCSETIFFLAG"); 2010 pfctl_check_skip_ifaces(ifname); 2011 } 2012 } 2013 return (0); 2014 } 2015 2016 void 2017 pfctl_debug(int dev, u_int32_t level, int opts) 2018 { 2019 if (ioctl(dev, DIOCSETDEBUG, &level)) 2020 err(1, "DIOCSETDEBUG"); 2021 if ((opts & PF_OPT_QUIET) == 0) { 2022 fprintf(stderr, "debug level set to '"); 2023 switch (level) { 2024 case PF_DEBUG_NONE: 2025 fprintf(stderr, "none"); 2026 break; 2027 case PF_DEBUG_URGENT: 2028 fprintf(stderr, "urgent"); 2029 break; 2030 case PF_DEBUG_MISC: 2031 fprintf(stderr, "misc"); 2032 break; 2033 case PF_DEBUG_NOISY: 2034 fprintf(stderr, "loud"); 2035 break; 2036 default: 2037 fprintf(stderr, "<invalid>"); 2038 break; 2039 } 2040 fprintf(stderr, "'\n"); 2041 } 2042 } 2043 2044 int 2045 pfctl_test_altqsupport(int dev, int opts) 2046 { 2047 struct pfioc_altq pa; 2048 2049 pa.version = PFIOC_ALTQ_VERSION; 2050 if (ioctl(dev, DIOCGETALTQS, &pa)) { 2051 if (errno == ENODEV) { 2052 if (opts & PF_OPT_VERBOSE) 2053 fprintf(stderr, "No ALTQ support in kernel\n" 2054 "ALTQ related functions disabled\n"); 2055 return (0); 2056 } else 2057 err(1, "DIOCGETALTQS"); 2058 } 2059 return (1); 2060 } 2061 2062 int 2063 pfctl_show_anchors(int dev, int opts, char *anchorname) 2064 { 2065 struct pfioc_ruleset pr; 2066 u_int32_t mnr, nr; 2067 2068 memset(&pr, 0, sizeof(pr)); 2069 memcpy(pr.path, anchorname, sizeof(pr.path)); 2070 if (ioctl(dev, DIOCGETRULESETS, &pr)) { 2071 if (errno == EINVAL) 2072 fprintf(stderr, "Anchor '%s' not found.\n", 2073 anchorname); 2074 else 2075 err(1, "DIOCGETRULESETS"); 2076 return (-1); 2077 } 2078 mnr = pr.nr; 2079 for (nr = 0; nr < mnr; ++nr) { 2080 char sub[MAXPATHLEN]; 2081 2082 pr.nr = nr; 2083 if (ioctl(dev, DIOCGETRULESET, &pr)) 2084 err(1, "DIOCGETRULESET"); 2085 if (!strcmp(pr.name, PF_RESERVED_ANCHOR)) 2086 continue; 2087 sub[0] = 0; 2088 if (pr.path[0]) { 2089 strlcat(sub, pr.path, sizeof(sub)); 2090 strlcat(sub, "/", sizeof(sub)); 2091 } 2092 strlcat(sub, pr.name, sizeof(sub)); 2093 if (sub[0] != '_' || (opts & PF_OPT_VERBOSE)) 2094 printf(" %s\n", sub); 2095 if ((opts & PF_OPT_VERBOSE) && pfctl_show_anchors(dev, opts, sub)) 2096 return (-1); 2097 } 2098 return (0); 2099 } 2100 2101 const char * 2102 pfctl_lookup_option(char *cmd, const char * const *list) 2103 { 2104 if (cmd != NULL && *cmd) 2105 for (; *list; list++) 2106 if (!strncmp(cmd, *list, strlen(cmd))) 2107 return (*list); 2108 return (NULL); 2109 } 2110 2111 int 2112 main(int argc, char *argv[]) 2113 { 2114 int error = 0; 2115 int ch; 2116 int mode = O_RDONLY; 2117 int opts = 0; 2118 int optimize = PF_OPTIMIZE_BASIC; 2119 char anchorname[MAXPATHLEN]; 2120 char *path; 2121 2122 if (argc < 2) 2123 usage(); 2124 2125 while ((ch = getopt(argc, argv, 2126 "a:AdD:eqf:F:ghi:k:K:mnNOo:Pp:rRs:t:T:vx:z")) != -1) { 2127 switch (ch) { 2128 case 'a': 2129 anchoropt = optarg; 2130 break; 2131 case 'd': 2132 opts |= PF_OPT_DISABLE; 2133 mode = O_RDWR; 2134 break; 2135 case 'D': 2136 if (pfctl_cmdline_symset(optarg) < 0) 2137 warnx("could not parse macro definition %s", 2138 optarg); 2139 break; 2140 case 'e': 2141 opts |= PF_OPT_ENABLE; 2142 mode = O_RDWR; 2143 break; 2144 case 'q': 2145 opts |= PF_OPT_QUIET; 2146 break; 2147 case 'F': 2148 clearopt = pfctl_lookup_option(optarg, clearopt_list); 2149 if (clearopt == NULL) { 2150 warnx("Unknown flush modifier '%s'", optarg); 2151 usage(); 2152 } 2153 mode = O_RDWR; 2154 break; 2155 case 'i': 2156 ifaceopt = optarg; 2157 break; 2158 case 'k': 2159 if (state_killers >= 2) { 2160 warnx("can only specify -k twice"); 2161 usage(); 2162 /* NOTREACHED */ 2163 } 2164 state_kill[state_killers++] = optarg; 2165 mode = O_RDWR; 2166 break; 2167 case 'K': 2168 if (src_node_killers >= 2) { 2169 warnx("can only specify -K twice"); 2170 usage(); 2171 /* NOTREACHED */ 2172 } 2173 src_node_kill[src_node_killers++] = optarg; 2174 mode = O_RDWR; 2175 break; 2176 case 'm': 2177 opts |= PF_OPT_MERGE; 2178 break; 2179 case 'n': 2180 opts |= PF_OPT_NOACTION; 2181 break; 2182 case 'N': 2183 loadopt |= PFCTL_FLAG_NAT; 2184 break; 2185 case 'r': 2186 opts |= PF_OPT_USEDNS; 2187 break; 2188 case 'f': 2189 rulesopt = optarg; 2190 mode = O_RDWR; 2191 break; 2192 case 'g': 2193 opts |= PF_OPT_DEBUG; 2194 break; 2195 case 'A': 2196 loadopt |= PFCTL_FLAG_ALTQ; 2197 break; 2198 case 'R': 2199 loadopt |= PFCTL_FLAG_FILTER; 2200 break; 2201 case 'o': 2202 optiopt = pfctl_lookup_option(optarg, optiopt_list); 2203 if (optiopt == NULL) { 2204 warnx("Unknown optimization '%s'", optarg); 2205 usage(); 2206 } 2207 opts |= PF_OPT_OPTIMIZE; 2208 break; 2209 case 'O': 2210 loadopt |= PFCTL_FLAG_OPTION; 2211 break; 2212 case 'p': 2213 pf_device = optarg; 2214 break; 2215 case 'P': 2216 opts |= PF_OPT_NUMERIC; 2217 break; 2218 case 's': 2219 showopt = pfctl_lookup_option(optarg, showopt_list); 2220 if (showopt == NULL) { 2221 warnx("Unknown show modifier '%s'", optarg); 2222 usage(); 2223 } 2224 break; 2225 case 't': 2226 tableopt = optarg; 2227 break; 2228 case 'T': 2229 tblcmdopt = pfctl_lookup_option(optarg, tblcmdopt_list); 2230 if (tblcmdopt == NULL) { 2231 warnx("Unknown table command '%s'", optarg); 2232 usage(); 2233 } 2234 break; 2235 case 'v': 2236 if (opts & PF_OPT_VERBOSE) 2237 opts |= PF_OPT_VERBOSE2; 2238 opts |= PF_OPT_VERBOSE; 2239 break; 2240 case 'x': 2241 debugopt = pfctl_lookup_option(optarg, debugopt_list); 2242 if (debugopt == NULL) { 2243 warnx("Unknown debug level '%s'", optarg); 2244 usage(); 2245 } 2246 mode = O_RDWR; 2247 break; 2248 case 'z': 2249 opts |= PF_OPT_CLRRULECTRS; 2250 mode = O_RDWR; 2251 break; 2252 case 'h': 2253 /* FALLTHROUGH */ 2254 default: 2255 usage(); 2256 /* NOTREACHED */ 2257 } 2258 } 2259 2260 if (tblcmdopt != NULL) { 2261 argc -= optind; 2262 argv += optind; 2263 ch = *tblcmdopt; 2264 if (ch == 'l') { 2265 loadopt |= PFCTL_FLAG_TABLE; 2266 tblcmdopt = NULL; 2267 } else 2268 mode = strchr("acdefkrz", ch) ? O_RDWR : O_RDONLY; 2269 } else if (argc != optind) { 2270 warnx("unknown command line argument: %s ...", argv[optind]); 2271 usage(); 2272 /* NOTREACHED */ 2273 } 2274 if (loadopt == 0) 2275 loadopt = ~0; 2276 2277 if ((path = calloc(1, MAXPATHLEN)) == NULL) 2278 errx(1, "pfctl: calloc"); 2279 memset(anchorname, 0, sizeof(anchorname)); 2280 if (anchoropt != NULL) { 2281 int len = strlen(anchoropt); 2282 2283 if (anchoropt[len - 1] == '*') { 2284 if (len >= 2 && anchoropt[len - 2] == '/') 2285 anchoropt[len - 2] = '\0'; 2286 else 2287 anchoropt[len - 1] = '\0'; 2288 opts |= PF_OPT_RECURSE; 2289 } 2290 if (strlcpy(anchorname, anchoropt, 2291 sizeof(anchorname)) >= sizeof(anchorname)) 2292 errx(1, "anchor name '%s' too long", 2293 anchoropt); 2294 loadopt &= PFCTL_FLAG_FILTER|PFCTL_FLAG_NAT|PFCTL_FLAG_TABLE; 2295 } 2296 2297 if ((opts & PF_OPT_NOACTION) == 0) { 2298 dev = open(pf_device, mode); 2299 if (dev == -1) 2300 err(1, "%s", pf_device); 2301 altqsupport = pfctl_test_altqsupport(dev, opts); 2302 } else { 2303 dev = open(pf_device, O_RDONLY); 2304 if (dev >= 0) 2305 opts |= PF_OPT_DUMMYACTION; 2306 /* turn off options */ 2307 opts &= ~ (PF_OPT_DISABLE | PF_OPT_ENABLE); 2308 clearopt = showopt = debugopt = NULL; 2309 #if !defined(ENABLE_ALTQ) 2310 altqsupport = 0; 2311 #else 2312 altqsupport = 1; 2313 #endif 2314 } 2315 2316 if (opts & PF_OPT_DISABLE) 2317 if (pfctl_disable(dev, opts)) 2318 error = 1; 2319 2320 if (showopt != NULL) { 2321 switch (*showopt) { 2322 case 'A': 2323 pfctl_show_anchors(dev, opts, anchorname); 2324 break; 2325 case 'r': 2326 pfctl_load_fingerprints(dev, opts); 2327 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_RULES, 2328 anchorname, 0); 2329 break; 2330 case 'l': 2331 pfctl_load_fingerprints(dev, opts); 2332 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_LABELS, 2333 anchorname, 0); 2334 break; 2335 case 'n': 2336 pfctl_load_fingerprints(dev, opts); 2337 pfctl_show_nat(dev, opts, anchorname); 2338 break; 2339 case 'q': 2340 pfctl_show_altq(dev, ifaceopt, opts, 2341 opts & PF_OPT_VERBOSE2); 2342 break; 2343 case 's': 2344 pfctl_show_states(dev, ifaceopt, opts); 2345 break; 2346 case 'S': 2347 pfctl_show_src_nodes(dev, opts); 2348 break; 2349 case 'i': 2350 pfctl_show_status(dev, opts); 2351 break; 2352 case 'R': 2353 error = pfctl_show_running(dev); 2354 break; 2355 case 't': 2356 pfctl_show_timeouts(dev, opts); 2357 break; 2358 case 'm': 2359 pfctl_show_limits(dev, opts); 2360 break; 2361 case 'a': 2362 opts |= PF_OPT_SHOWALL; 2363 pfctl_load_fingerprints(dev, opts); 2364 2365 pfctl_show_nat(dev, opts, anchorname); 2366 pfctl_show_rules(dev, path, opts, 0, anchorname, 0); 2367 pfctl_show_altq(dev, ifaceopt, opts, 0); 2368 pfctl_show_states(dev, ifaceopt, opts); 2369 pfctl_show_src_nodes(dev, opts); 2370 pfctl_show_status(dev, opts); 2371 pfctl_show_rules(dev, path, opts, 1, anchorname, 0); 2372 pfctl_show_timeouts(dev, opts); 2373 pfctl_show_limits(dev, opts); 2374 pfctl_show_tables(anchorname, opts); 2375 pfctl_show_fingerprints(opts); 2376 break; 2377 case 'T': 2378 pfctl_show_tables(anchorname, opts); 2379 break; 2380 case 'o': 2381 pfctl_load_fingerprints(dev, opts); 2382 pfctl_show_fingerprints(opts); 2383 break; 2384 case 'I': 2385 pfctl_show_ifaces(ifaceopt, opts); 2386 break; 2387 } 2388 } 2389 2390 if ((opts & PF_OPT_CLRRULECTRS) && showopt == NULL) 2391 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_NOTHING, 2392 anchorname, 0); 2393 2394 if (clearopt != NULL) { 2395 if (anchorname[0] == '_' || strstr(anchorname, "/_") != NULL) 2396 errx(1, "anchor names beginning with '_' cannot " 2397 "be modified from the command line"); 2398 2399 switch (*clearopt) { 2400 case 'r': 2401 pfctl_clear_rules(dev, opts, anchorname); 2402 break; 2403 case 'n': 2404 pfctl_clear_nat(dev, opts, anchorname); 2405 break; 2406 case 'q': 2407 pfctl_clear_altq(dev, opts); 2408 break; 2409 case 's': 2410 pfctl_clear_states(dev, ifaceopt, opts); 2411 break; 2412 case 'S': 2413 pfctl_clear_src_nodes(dev, opts); 2414 break; 2415 case 'i': 2416 pfctl_clear_stats(dev, opts); 2417 break; 2418 case 'a': 2419 pfctl_clear_rules(dev, opts, anchorname); 2420 pfctl_clear_nat(dev, opts, anchorname); 2421 pfctl_clear_tables(anchorname, opts); 2422 if (!*anchorname) { 2423 pfctl_clear_altq(dev, opts); 2424 pfctl_clear_states(dev, ifaceopt, opts); 2425 pfctl_clear_src_nodes(dev, opts); 2426 pfctl_clear_stats(dev, opts); 2427 pfctl_clear_fingerprints(dev, opts); 2428 pfctl_clear_interface_flags(dev, opts); 2429 } 2430 break; 2431 case 'o': 2432 pfctl_clear_fingerprints(dev, opts); 2433 break; 2434 case 'T': 2435 pfctl_clear_tables(anchorname, opts); 2436 break; 2437 } 2438 } 2439 if (state_killers) { 2440 if (!strcmp(state_kill[0], "label")) 2441 pfctl_label_kill_states(dev, ifaceopt, opts); 2442 else if (!strcmp(state_kill[0], "id")) 2443 pfctl_id_kill_states(dev, ifaceopt, opts); 2444 else 2445 pfctl_net_kill_states(dev, ifaceopt, opts); 2446 } 2447 2448 if (src_node_killers) 2449 pfctl_kill_src_nodes(dev, ifaceopt, opts); 2450 2451 if (tblcmdopt != NULL) { 2452 error = pfctl_command_tables(argc, argv, tableopt, 2453 tblcmdopt, rulesopt, anchorname, opts); 2454 rulesopt = NULL; 2455 } 2456 if (optiopt != NULL) { 2457 switch (*optiopt) { 2458 case 'n': 2459 optimize = 0; 2460 break; 2461 case 'b': 2462 optimize |= PF_OPTIMIZE_BASIC; 2463 break; 2464 case 'o': 2465 case 'p': 2466 optimize |= PF_OPTIMIZE_PROFILE; 2467 break; 2468 } 2469 } 2470 2471 if ((rulesopt != NULL) && (loadopt & PFCTL_FLAG_OPTION) && 2472 !anchorname[0] && !(opts & PF_OPT_NOACTION)) 2473 if (pfctl_get_skip_ifaces()) 2474 error = 1; 2475 2476 if (rulesopt != NULL && !(opts & (PF_OPT_MERGE|PF_OPT_NOACTION)) && 2477 !anchorname[0] && (loadopt & PFCTL_FLAG_OPTION)) 2478 if (pfctl_file_fingerprints(dev, opts, PF_OSFP_FILE)) 2479 error = 1; 2480 2481 if (rulesopt != NULL) { 2482 if (anchorname[0] == '_' || strstr(anchorname, "/_") != NULL) 2483 errx(1, "anchor names beginning with '_' cannot " 2484 "be modified from the command line"); 2485 if (pfctl_rules(dev, rulesopt, opts, optimize, 2486 anchorname, NULL)) 2487 error = 1; 2488 else if (!(opts & PF_OPT_NOACTION) && 2489 (loadopt & PFCTL_FLAG_TABLE)) 2490 warn_namespace_collision(NULL); 2491 } 2492 2493 if (opts & PF_OPT_ENABLE) 2494 if (pfctl_enable(dev, opts)) 2495 error = 1; 2496 2497 if (debugopt != NULL) { 2498 switch (*debugopt) { 2499 case 'n': 2500 pfctl_debug(dev, PF_DEBUG_NONE, opts); 2501 break; 2502 case 'u': 2503 pfctl_debug(dev, PF_DEBUG_URGENT, opts); 2504 break; 2505 case 'm': 2506 pfctl_debug(dev, PF_DEBUG_MISC, opts); 2507 break; 2508 case 'l': 2509 pfctl_debug(dev, PF_DEBUG_NOISY, opts); 2510 break; 2511 } 2512 } 2513 2514 exit(error); 2515 } 2516