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