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