1 /* $OpenBSD: pfctl.c,v 1.281 2009/04/06 12:05:55 henning 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/types.h> 35 #include <sys/ioctl.h> 36 #include <sys/socket.h> 37 #include <sys/stat.h> 38 39 #include <net/if.h> 40 #include <netinet/in.h> 41 #include <net/pfvar.h> 42 #include <arpa/inet.h> 43 #include <altq/altq.h> 44 #include <sys/sysctl.h> 45 46 #include <err.h> 47 #include <errno.h> 48 #include <fcntl.h> 49 #include <limits.h> 50 #include <netdb.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <unistd.h> 55 56 #include "pfctl_parser.h" 57 #include "pfctl.h" 58 59 void usage(void); 60 int pfctl_enable(int, int); 61 int pfctl_disable(int, int); 62 int pfctl_clear_stats(int, int); 63 int pfctl_clear_interface_flags(int, int); 64 int pfctl_clear_rules(int, int, char *); 65 int pfctl_clear_nat(int, int, char *); 66 int pfctl_clear_altq(int, int); 67 int pfctl_clear_src_nodes(int, int); 68 int pfctl_clear_states(int, const char *, int); 69 void pfctl_addrprefix(char *, struct pf_addr *); 70 int pfctl_kill_src_nodes(int, const char *, int); 71 int pfctl_net_kill_states(int, const char *, int); 72 int pfctl_label_kill_states(int, const char *, int); 73 int pfctl_id_kill_states(int, const char *, int); 74 void pfctl_init_options(struct pfctl *); 75 int pfctl_load_options(struct pfctl *); 76 int pfctl_load_limit(struct pfctl *, unsigned int, unsigned int); 77 int pfctl_load_timeout(struct pfctl *, unsigned int, unsigned int); 78 int pfctl_load_debug(struct pfctl *, unsigned int); 79 int pfctl_load_logif(struct pfctl *, char *); 80 int pfctl_load_hostid(struct pfctl *, unsigned int); 81 int pfctl_load_reassembly(struct pfctl *, u_int32_t); 82 int pfctl_get_pool(int, struct pf_pool *, u_int32_t, u_int32_t, int, 83 char *); 84 void pfctl_print_rule_counters(struct pf_rule *, int); 85 int pfctl_show_rules(int, char *, int, enum pfctl_show, char *, int); 86 int pfctl_show_nat(int, int, char *); 87 int pfctl_show_src_nodes(int, int); 88 int pfctl_show_states(int, const char *, int); 89 int pfctl_show_status(int, int); 90 int pfctl_show_timeouts(int, int); 91 int pfctl_show_limits(int, int); 92 void pfctl_debug(int, u_int32_t, int); 93 int pfctl_test_altqsupport(int, int); 94 int pfctl_show_anchors(int, int, char *); 95 int pfctl_ruleset_trans(struct pfctl *, char *, struct pf_anchor *); 96 int pfctl_load_ruleset(struct pfctl *, char *, 97 struct pf_ruleset *, int, int); 98 int pfctl_load_rule(struct pfctl *, char *, struct pf_rule *, int); 99 const char *pfctl_lookup_option(char *, const char **); 100 101 struct pf_anchor_global pf_anchors; 102 struct pf_anchor pf_main_anchor; 103 104 const char *clearopt; 105 char *rulesopt; 106 const char *showopt; 107 const char *debugopt; 108 char *anchoropt; 109 const char *optiopt = NULL; 110 char *pf_device = "/dev/pf"; 111 char *ifaceopt; 112 char *tableopt; 113 const char *tblcmdopt; 114 int src_node_killers; 115 char *src_node_kill[2]; 116 int state_killers; 117 char *state_kill[2]; 118 int loadopt; 119 int altqsupport; 120 121 int dev = -1; 122 int first_title = 1; 123 int labels = 0; 124 125 #define INDENT(d, o) do { \ 126 if (o) { \ 127 int i; \ 128 for (i=0; i < d; i++) \ 129 printf(" "); \ 130 } \ 131 } while (0); \ 132 133 134 static const struct { 135 const char *name; 136 int index; 137 } pf_limits[] = { 138 { "states", PF_LIMIT_STATES }, 139 { "src-nodes", PF_LIMIT_SRC_NODES }, 140 { "frags", PF_LIMIT_FRAGS }, 141 { "tables", PF_LIMIT_TABLES }, 142 { "table-entries", PF_LIMIT_TABLE_ENTRIES }, 143 { NULL, 0 } 144 }; 145 146 struct pf_hint { 147 const char *name; 148 int timeout; 149 }; 150 static const struct pf_hint pf_hint_normal[] = { 151 { "tcp.first", 2 * 60 }, 152 { "tcp.opening", 30 }, 153 { "tcp.established", 24 * 60 * 60 }, 154 { "tcp.closing", 15 * 60 }, 155 { "tcp.finwait", 45 }, 156 { "tcp.closed", 90 }, 157 { "tcp.tsdiff", 30 }, 158 { NULL, 0 } 159 }; 160 static const struct pf_hint pf_hint_satellite[] = { 161 { "tcp.first", 3 * 60 }, 162 { "tcp.opening", 30 + 5 }, 163 { "tcp.established", 24 * 60 * 60 }, 164 { "tcp.closing", 15 * 60 + 5 }, 165 { "tcp.finwait", 45 + 5 }, 166 { "tcp.closed", 90 + 5 }, 167 { "tcp.tsdiff", 60 }, 168 { NULL, 0 } 169 }; 170 static const struct pf_hint pf_hint_conservative[] = { 171 { "tcp.first", 60 * 60 }, 172 { "tcp.opening", 15 * 60 }, 173 { "tcp.established", 5 * 24 * 60 * 60 }, 174 { "tcp.closing", 60 * 60 }, 175 { "tcp.finwait", 10 * 60 }, 176 { "tcp.closed", 3 * 60 }, 177 { "tcp.tsdiff", 60 }, 178 { NULL, 0 } 179 }; 180 static const struct pf_hint pf_hint_aggressive[] = { 181 { "tcp.first", 30 }, 182 { "tcp.opening", 5 }, 183 { "tcp.established", 5 * 60 * 60 }, 184 { "tcp.closing", 60 }, 185 { "tcp.finwait", 30 }, 186 { "tcp.closed", 30 }, 187 { "tcp.tsdiff", 10 }, 188 { NULL, 0 } 189 }; 190 191 static const struct { 192 const char *name; 193 const struct pf_hint *hint; 194 } pf_hints[] = { 195 { "normal", pf_hint_normal }, 196 { "satellite", pf_hint_satellite }, 197 { "high-latency", pf_hint_satellite }, 198 { "conservative", pf_hint_conservative }, 199 { "aggressive", pf_hint_aggressive }, 200 { NULL, NULL } 201 }; 202 203 static const char *clearopt_list[] = { 204 "nat", "queue", "rules", "Sources", 205 "states", "info", "Tables", "osfp", "all", NULL 206 }; 207 208 static const char *showopt_list[] = { 209 "nat", "queue", "rules", "Anchors", "Sources", "states", "info", 210 "Interfaces", "labels", "timeouts", "memory", "Tables", "osfp", 211 "all", NULL 212 }; 213 214 static const char *tblcmdopt_list[] = { 215 "kill", "flush", "add", "delete", "load", "replace", "show", 216 "test", "zero", "expire", NULL 217 }; 218 219 static const char *debugopt_list[] = { 220 "none", "urgent", "misc", "loud", NULL 221 }; 222 223 static const char *optiopt_list[] = { 224 "none", "basic", "profile", NULL 225 }; 226 227 void 228 usage(void) 229 { 230 extern char *__progname; 231 232 fprintf(stderr, "usage: %s [-AdeghmNnOqRrvz] ", __progname); 233 fprintf(stderr, "[-a anchor] [-D macro=value] [-F modifier]\n"); 234 fprintf(stderr, "\t[-f file] [-i interface] [-K host | network]\n"); 235 fprintf(stderr, "\t[-k host | network | label | id] "); 236 fprintf(stderr, "[-o level] [-p device]\n"); 237 fprintf(stderr, "\t[-s modifier] "); 238 fprintf(stderr, "[-t table -T command [address ...]] [-x level]\n"); 239 exit(1); 240 } 241 242 int 243 pfctl_enable(int dev, int opts) 244 { 245 if (ioctl(dev, DIOCSTART)) { 246 if (errno == EEXIST) 247 errx(1, "pf already enabled"); 248 else 249 err(1, "DIOCSTART"); 250 } 251 if ((opts & PF_OPT_QUIET) == 0) 252 fprintf(stderr, "pf enabled\n"); 253 254 if (altqsupport && ioctl(dev, DIOCSTARTALTQ)) 255 if (errno != EEXIST) 256 err(1, "DIOCSTARTALTQ"); 257 258 return (0); 259 } 260 261 int 262 pfctl_disable(int dev, int opts) 263 { 264 if (ioctl(dev, DIOCSTOP)) { 265 if (errno == ENOENT) 266 errx(1, "pf not enabled"); 267 else 268 err(1, "DIOCSTOP"); 269 } 270 if ((opts & PF_OPT_QUIET) == 0) 271 fprintf(stderr, "pf disabled\n"); 272 273 if (altqsupport && ioctl(dev, DIOCSTOPALTQ)) 274 if (errno != ENOENT) 275 err(1, "DIOCSTOPALTQ"); 276 277 return (0); 278 } 279 280 int 281 pfctl_clear_stats(int dev, int opts) 282 { 283 if (ioctl(dev, DIOCCLRSTATUS)) 284 err(1, "DIOCCLRSTATUS"); 285 if ((opts & PF_OPT_QUIET) == 0) 286 fprintf(stderr, "pf: statistics cleared\n"); 287 return (0); 288 } 289 290 int 291 pfctl_clear_interface_flags(int dev, int opts) 292 { 293 struct pfioc_iface pi; 294 295 if ((opts & PF_OPT_NOACTION) == 0) { 296 bzero(&pi, sizeof(pi)); 297 pi.pfiio_flags = PFI_IFLAG_SKIP; 298 299 if (ioctl(dev, DIOCCLRIFFLAG, &pi)) 300 err(1, "DIOCCLRIFFLAG"); 301 if ((opts & PF_OPT_QUIET) == 0) 302 fprintf(stderr, "pf: interface flags reset\n"); 303 } 304 return (0); 305 } 306 307 int 308 pfctl_clear_rules(int dev, int opts, char *anchorname) 309 { 310 struct pfr_buffer t; 311 312 memset(&t, 0, sizeof(t)); 313 t.pfrb_type = PFRB_TRANS; 314 if (pfctl_add_trans(&t, PF_RULESET_FILTER, anchorname) || 315 pfctl_trans(dev, &t, DIOCXBEGIN, 0) || 316 pfctl_trans(dev, &t, DIOCXCOMMIT, 0)) 317 err(1, "pfctl_clear_rules"); 318 if ((opts & PF_OPT_QUIET) == 0) 319 fprintf(stderr, "rules cleared\n"); 320 return (0); 321 } 322 323 int 324 pfctl_clear_nat(int dev, int opts, char *anchorname) 325 { 326 struct pfr_buffer t; 327 328 memset(&t, 0, sizeof(t)); 329 t.pfrb_type = PFRB_TRANS; 330 if (pfctl_add_trans(&t, PF_RULESET_NAT, anchorname) || 331 pfctl_add_trans(&t, PF_RULESET_BINAT, anchorname) || 332 pfctl_add_trans(&t, PF_RULESET_RDR, anchorname) || 333 pfctl_trans(dev, &t, DIOCXBEGIN, 0) || 334 pfctl_trans(dev, &t, DIOCXCOMMIT, 0)) 335 err(1, "pfctl_clear_nat"); 336 if ((opts & PF_OPT_QUIET) == 0) 337 fprintf(stderr, "nat cleared\n"); 338 return (0); 339 } 340 341 int 342 pfctl_clear_altq(int dev, int opts) 343 { 344 struct pfr_buffer t; 345 346 if (!altqsupport) 347 return (-1); 348 memset(&t, 0, sizeof(t)); 349 t.pfrb_type = PFRB_TRANS; 350 if (pfctl_add_trans(&t, PF_RULESET_ALTQ, "") || 351 pfctl_trans(dev, &t, DIOCXBEGIN, 0) || 352 pfctl_trans(dev, &t, DIOCXCOMMIT, 0)) 353 err(1, "pfctl_clear_altq"); 354 if ((opts & PF_OPT_QUIET) == 0) 355 fprintf(stderr, "altq cleared\n"); 356 return (0); 357 } 358 359 int 360 pfctl_clear_src_nodes(int dev, int opts) 361 { 362 if (ioctl(dev, DIOCCLRSRCNODES)) 363 err(1, "DIOCCLRSRCNODES"); 364 if ((opts & PF_OPT_QUIET) == 0) 365 fprintf(stderr, "source tracking entries cleared\n"); 366 return (0); 367 } 368 369 int 370 pfctl_clear_states(int dev, const char *iface, int opts) 371 { 372 struct pfioc_state_kill psk; 373 374 memset(&psk, 0, sizeof(psk)); 375 if (iface != NULL && strlcpy(psk.psk_ifname, iface, 376 sizeof(psk.psk_ifname)) >= sizeof(psk.psk_ifname)) 377 errx(1, "invalid interface: %s", iface); 378 379 if (ioctl(dev, DIOCCLRSTATES, &psk)) 380 err(1, "DIOCCLRSTATES"); 381 if ((opts & PF_OPT_QUIET) == 0) 382 fprintf(stderr, "%d states cleared\n", psk.psk_killed); 383 return (0); 384 } 385 386 void 387 pfctl_addrprefix(char *addr, struct pf_addr *mask) 388 { 389 char *p; 390 const char *errstr; 391 int prefix, ret_ga, q, r; 392 struct addrinfo hints, *res; 393 394 if ((p = strchr(addr, '/')) == NULL) 395 return; 396 397 *p++ = '\0'; 398 prefix = strtonum(p, 0, 128, &errstr); 399 if (errstr) 400 errx(1, "prefix is %s: %s", errstr, p); 401 402 bzero(&hints, sizeof(hints)); 403 /* prefix only with numeric addresses */ 404 hints.ai_flags |= AI_NUMERICHOST; 405 406 if ((ret_ga = getaddrinfo(addr, NULL, &hints, &res))) { 407 errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); 408 /* NOTREACHED */ 409 } 410 411 if (res->ai_family == AF_INET && prefix > 32) 412 errx(1, "prefix too long for AF_INET"); 413 else if (res->ai_family == AF_INET6 && prefix > 128) 414 errx(1, "prefix too long for AF_INET6"); 415 416 q = prefix >> 3; 417 r = prefix & 7; 418 switch (res->ai_family) { 419 case AF_INET: 420 bzero(&mask->v4, sizeof(mask->v4)); 421 mask->v4.s_addr = htonl((u_int32_t) 422 (0xffffffffffULL << (32 - prefix))); 423 break; 424 case AF_INET6: 425 bzero(&mask->v6, sizeof(mask->v6)); 426 if (q > 0) 427 memset((void *)&mask->v6, 0xff, q); 428 if (r > 0) 429 *((u_char *)&mask->v6 + q) = 430 (0xff00 >> r) & 0xff; 431 break; 432 } 433 freeaddrinfo(res); 434 } 435 436 int 437 pfctl_kill_src_nodes(int dev, const char *iface, int opts) 438 { 439 struct pfioc_src_node_kill psnk; 440 struct addrinfo *res[2], *resp[2]; 441 struct sockaddr last_src, last_dst; 442 int killed, sources, dests; 443 int ret_ga; 444 445 killed = sources = dests = 0; 446 447 memset(&psnk, 0, sizeof(psnk)); 448 memset(&psnk.psnk_src.addr.v.a.mask, 0xff, 449 sizeof(psnk.psnk_src.addr.v.a.mask)); 450 memset(&last_src, 0xff, sizeof(last_src)); 451 memset(&last_dst, 0xff, sizeof(last_dst)); 452 453 pfctl_addrprefix(src_node_kill[0], &psnk.psnk_src.addr.v.a.mask); 454 455 if ((ret_ga = getaddrinfo(src_node_kill[0], NULL, NULL, &res[0]))) { 456 errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); 457 /* NOTREACHED */ 458 } 459 for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) { 460 if (resp[0]->ai_addr == NULL) 461 continue; 462 /* We get lots of duplicates. Catch the easy ones */ 463 if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0) 464 continue; 465 last_src = *(struct sockaddr *)resp[0]->ai_addr; 466 467 psnk.psnk_af = resp[0]->ai_family; 468 sources++; 469 470 if (psnk.psnk_af == AF_INET) 471 psnk.psnk_src.addr.v.a.addr.v4 = 472 ((struct sockaddr_in *)resp[0]->ai_addr)->sin_addr; 473 else if (psnk.psnk_af == AF_INET6) 474 psnk.psnk_src.addr.v.a.addr.v6 = 475 ((struct sockaddr_in6 *)resp[0]->ai_addr)-> 476 sin6_addr; 477 else 478 errx(1, "Unknown address family %d", psnk.psnk_af); 479 480 if (src_node_killers > 1) { 481 dests = 0; 482 memset(&psnk.psnk_dst.addr.v.a.mask, 0xff, 483 sizeof(psnk.psnk_dst.addr.v.a.mask)); 484 memset(&last_dst, 0xff, sizeof(last_dst)); 485 pfctl_addrprefix(src_node_kill[1], 486 &psnk.psnk_dst.addr.v.a.mask); 487 if ((ret_ga = getaddrinfo(src_node_kill[1], NULL, NULL, 488 &res[1]))) { 489 errx(1, "getaddrinfo: %s", 490 gai_strerror(ret_ga)); 491 /* NOTREACHED */ 492 } 493 for (resp[1] = res[1]; resp[1]; 494 resp[1] = resp[1]->ai_next) { 495 if (resp[1]->ai_addr == NULL) 496 continue; 497 if (psnk.psnk_af != resp[1]->ai_family) 498 continue; 499 500 if (memcmp(&last_dst, resp[1]->ai_addr, 501 sizeof(last_dst)) == 0) 502 continue; 503 last_dst = *(struct sockaddr *)resp[1]->ai_addr; 504 505 dests++; 506 507 if (psnk.psnk_af == AF_INET) 508 psnk.psnk_dst.addr.v.a.addr.v4 = 509 ((struct sockaddr_in *)resp[1]-> 510 ai_addr)->sin_addr; 511 else if (psnk.psnk_af == AF_INET6) 512 psnk.psnk_dst.addr.v.a.addr.v6 = 513 ((struct sockaddr_in6 *)resp[1]-> 514 ai_addr)->sin6_addr; 515 else 516 errx(1, "Unknown address family %d", 517 psnk.psnk_af); 518 519 if (ioctl(dev, DIOCKILLSRCNODES, &psnk)) 520 err(1, "DIOCKILLSRCNODES"); 521 killed += psnk.psnk_killed; 522 } 523 freeaddrinfo(res[1]); 524 } else { 525 if (ioctl(dev, DIOCKILLSRCNODES, &psnk)) 526 err(1, "DIOCKILLSRCNODES"); 527 killed += psnk.psnk_killed; 528 } 529 } 530 531 freeaddrinfo(res[0]); 532 533 if ((opts & PF_OPT_QUIET) == 0) 534 fprintf(stderr, "killed %d src nodes from %d sources and %d " 535 "destinations\n", killed, sources, dests); 536 return (0); 537 } 538 539 int 540 pfctl_net_kill_states(int dev, const char *iface, int opts) 541 { 542 struct pfioc_state_kill psk; 543 struct addrinfo *res[2], *resp[2]; 544 struct sockaddr last_src, last_dst; 545 int killed, sources, dests; 546 int ret_ga; 547 548 killed = sources = dests = 0; 549 550 memset(&psk, 0, sizeof(psk)); 551 memset(&psk.psk_src.addr.v.a.mask, 0xff, 552 sizeof(psk.psk_src.addr.v.a.mask)); 553 memset(&last_src, 0xff, sizeof(last_src)); 554 memset(&last_dst, 0xff, sizeof(last_dst)); 555 if (iface != NULL && strlcpy(psk.psk_ifname, iface, 556 sizeof(psk.psk_ifname)) >= sizeof(psk.psk_ifname)) 557 errx(1, "invalid interface: %s", iface); 558 559 pfctl_addrprefix(state_kill[0], &psk.psk_src.addr.v.a.mask); 560 561 if ((ret_ga = getaddrinfo(state_kill[0], NULL, NULL, &res[0]))) { 562 errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); 563 /* NOTREACHED */ 564 } 565 for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) { 566 if (resp[0]->ai_addr == NULL) 567 continue; 568 /* We get lots of duplicates. Catch the easy ones */ 569 if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0) 570 continue; 571 last_src = *(struct sockaddr *)resp[0]->ai_addr; 572 573 psk.psk_af = resp[0]->ai_family; 574 sources++; 575 576 if (psk.psk_af == AF_INET) 577 psk.psk_src.addr.v.a.addr.v4 = 578 ((struct sockaddr_in *)resp[0]->ai_addr)->sin_addr; 579 else if (psk.psk_af == AF_INET6) 580 psk.psk_src.addr.v.a.addr.v6 = 581 ((struct sockaddr_in6 *)resp[0]->ai_addr)-> 582 sin6_addr; 583 else 584 errx(1, "Unknown address family %d", psk.psk_af); 585 586 if (state_killers > 1) { 587 dests = 0; 588 memset(&psk.psk_dst.addr.v.a.mask, 0xff, 589 sizeof(psk.psk_dst.addr.v.a.mask)); 590 memset(&last_dst, 0xff, sizeof(last_dst)); 591 pfctl_addrprefix(state_kill[1], 592 &psk.psk_dst.addr.v.a.mask); 593 if ((ret_ga = getaddrinfo(state_kill[1], NULL, NULL, 594 &res[1]))) { 595 errx(1, "getaddrinfo: %s", 596 gai_strerror(ret_ga)); 597 /* NOTREACHED */ 598 } 599 for (resp[1] = res[1]; resp[1]; 600 resp[1] = resp[1]->ai_next) { 601 if (resp[1]->ai_addr == NULL) 602 continue; 603 if (psk.psk_af != resp[1]->ai_family) 604 continue; 605 606 if (memcmp(&last_dst, resp[1]->ai_addr, 607 sizeof(last_dst)) == 0) 608 continue; 609 last_dst = *(struct sockaddr *)resp[1]->ai_addr; 610 611 dests++; 612 613 if (psk.psk_af == AF_INET) 614 psk.psk_dst.addr.v.a.addr.v4 = 615 ((struct sockaddr_in *)resp[1]-> 616 ai_addr)->sin_addr; 617 else if (psk.psk_af == AF_INET6) 618 psk.psk_dst.addr.v.a.addr.v6 = 619 ((struct sockaddr_in6 *)resp[1]-> 620 ai_addr)->sin6_addr; 621 else 622 errx(1, "Unknown address family %d", 623 psk.psk_af); 624 625 if (ioctl(dev, DIOCKILLSTATES, &psk)) 626 err(1, "DIOCKILLSTATES"); 627 killed += psk.psk_killed; 628 } 629 freeaddrinfo(res[1]); 630 } else { 631 if (ioctl(dev, DIOCKILLSTATES, &psk)) 632 err(1, "DIOCKILLSTATES"); 633 killed += psk.psk_killed; 634 } 635 } 636 637 freeaddrinfo(res[0]); 638 639 if ((opts & PF_OPT_QUIET) == 0) 640 fprintf(stderr, "killed %d states from %d sources and %d " 641 "destinations\n", killed, sources, dests); 642 return (0); 643 } 644 645 int 646 pfctl_label_kill_states(int dev, const char *iface, int opts) 647 { 648 struct pfioc_state_kill psk; 649 650 if (state_killers != 2 || (strlen(state_kill[1]) == 0)) { 651 warnx("no label specified"); 652 usage(); 653 } 654 memset(&psk, 0, sizeof(psk)); 655 if (iface != NULL && strlcpy(psk.psk_ifname, iface, 656 sizeof(psk.psk_ifname)) >= sizeof(psk.psk_ifname)) 657 errx(1, "invalid interface: %s", iface); 658 659 if (strlcpy(psk.psk_label, state_kill[1], sizeof(psk.psk_label)) >= 660 sizeof(psk.psk_label)) 661 errx(1, "label too long: %s", state_kill[1]); 662 663 if (ioctl(dev, DIOCKILLSTATES, &psk)) 664 err(1, "DIOCKILLSTATES"); 665 666 if ((opts & PF_OPT_QUIET) == 0) 667 fprintf(stderr, "killed %d states\n", psk.psk_killed); 668 669 return (0); 670 } 671 672 int 673 pfctl_id_kill_states(int dev, const char *iface, int opts) 674 { 675 struct pfioc_state_kill psk; 676 677 if (state_killers != 2 || (strlen(state_kill[1]) == 0)) { 678 warnx("no id specified"); 679 usage(); 680 } 681 682 memset(&psk, 0, sizeof(psk)); 683 if ((sscanf(state_kill[1], "%llx/%x", 684 &psk.psk_pfcmp.id, &psk.psk_pfcmp.creatorid)) == 2) 685 HTONL(psk.psk_pfcmp.creatorid); 686 else if ((sscanf(state_kill[1], "%llx", &psk.psk_pfcmp.id)) == 1) { 687 psk.psk_pfcmp.creatorid = 0; 688 } else { 689 warnx("wrong id format specified"); 690 usage(); 691 } 692 if (psk.psk_pfcmp.id == 0) { 693 warnx("cannot kill id 0"); 694 usage(); 695 } 696 697 psk.psk_pfcmp.id = htobe64(psk.psk_pfcmp.id); 698 if (ioctl(dev, DIOCKILLSTATES, &psk)) 699 err(1, "DIOCKILLSTATES"); 700 701 if ((opts & PF_OPT_QUIET) == 0) 702 fprintf(stderr, "killed %d states\n", psk.psk_killed); 703 704 return (0); 705 } 706 707 int 708 pfctl_get_pool(int dev, struct pf_pool *pool, u_int32_t nr, 709 u_int32_t ticket, int r_action, char *anchorname) 710 { 711 struct pfioc_pooladdr pp; 712 struct pf_pooladdr *pa; 713 u_int32_t pnr, mpnr; 714 715 memset(&pp, 0, sizeof(pp)); 716 memcpy(pp.anchor, anchorname, sizeof(pp.anchor)); 717 pp.r_action = r_action; 718 pp.r_num = nr; 719 pp.ticket = ticket; 720 if (ioctl(dev, DIOCGETADDRS, &pp)) { 721 warn("DIOCGETADDRS"); 722 return (-1); 723 } 724 mpnr = pp.nr; 725 TAILQ_INIT(&pool->list); 726 for (pnr = 0; pnr < mpnr; ++pnr) { 727 pp.nr = pnr; 728 if (ioctl(dev, DIOCGETADDR, &pp)) { 729 warn("DIOCGETADDR"); 730 return (-1); 731 } 732 pa = calloc(1, sizeof(struct pf_pooladdr)); 733 if (pa == NULL) 734 err(1, "calloc"); 735 bcopy(&pp.addr, pa, sizeof(struct pf_pooladdr)); 736 TAILQ_INSERT_TAIL(&pool->list, pa, entries); 737 } 738 739 return (0); 740 } 741 742 void 743 pfctl_move_pool(struct pf_pool *src, struct pf_pool *dst) 744 { 745 struct pf_pooladdr *pa; 746 747 while ((pa = TAILQ_FIRST(&src->list)) != NULL) { 748 TAILQ_REMOVE(&src->list, pa, entries); 749 TAILQ_INSERT_TAIL(&dst->list, pa, entries); 750 } 751 } 752 753 void 754 pfctl_clear_pool(struct pf_pool *pool) 755 { 756 struct pf_pooladdr *pa; 757 758 while ((pa = TAILQ_FIRST(&pool->list)) != NULL) { 759 TAILQ_REMOVE(&pool->list, pa, entries); 760 free(pa); 761 } 762 } 763 764 void 765 pfctl_print_rule_counters(struct pf_rule *rule, int opts) 766 { 767 if (opts & PF_OPT_DEBUG) { 768 const char *t[PF_SKIP_COUNT] = { "i", "d", "f", 769 "p", "sa", "sp", "da", "dp" }; 770 int i; 771 772 printf(" [ Skip steps: "); 773 for (i = 0; i < PF_SKIP_COUNT; ++i) { 774 if (rule->skip[i].nr == rule->nr + 1) 775 continue; 776 printf("%s=", t[i]); 777 if (rule->skip[i].nr == -1) 778 printf("end "); 779 else 780 printf("%u ", rule->skip[i].nr); 781 } 782 printf("]\n"); 783 784 printf(" [ queue: qname=%s qid=%u pqname=%s pqid=%u ]\n", 785 rule->qname, rule->qid, rule->pqname, rule->pqid); 786 } 787 if (opts & PF_OPT_VERBOSE) { 788 printf(" [ Evaluations: %-8llu Packets: %-8llu " 789 "Bytes: %-10llu States: %-6u]\n", 790 (unsigned long long)rule->evaluations, 791 (unsigned long long)(rule->packets[0] + 792 rule->packets[1]), 793 (unsigned long long)(rule->bytes[0] + 794 rule->bytes[1]), rule->states_cur); 795 if (!(opts & PF_OPT_DEBUG)) 796 printf(" [ Inserted: uid %u pid %u " 797 "State Creations: %-6u]\n", 798 (unsigned)rule->cuid, (unsigned)rule->cpid, 799 rule->states_tot); 800 } 801 } 802 803 void 804 pfctl_print_title(char *title) 805 { 806 if (!first_title) 807 printf("\n"); 808 first_title = 0; 809 printf("%s\n", title); 810 } 811 812 int 813 pfctl_show_rules(int dev, char *path, int opts, enum pfctl_show format, 814 char *anchorname, int depth) 815 { 816 struct pfioc_rule pr; 817 u_int32_t nr, mnr, header = 0; 818 int rule_numbers = opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG); 819 int len = strlen(path); 820 int brace; 821 char *p; 822 823 if (path[0]) 824 snprintf(&path[len], MAXPATHLEN - len, "/%s", anchorname); 825 else 826 snprintf(&path[len], MAXPATHLEN - len, "%s", anchorname); 827 828 memset(&pr, 0, sizeof(pr)); 829 memcpy(pr.anchor, path, sizeof(pr.anchor)); 830 if (opts & PF_OPT_SHOWALL) { 831 pr.rule.action = PF_PASS; 832 if (ioctl(dev, DIOCGETRULES, &pr)) { 833 warn("DIOCGETRULES"); 834 goto error; 835 } 836 header++; 837 } 838 if (opts & PF_OPT_SHOWALL) { 839 if (format == PFCTL_SHOW_RULES && (pr.nr > 0 || header)) 840 pfctl_print_title("FILTER RULES:"); 841 else if (format == PFCTL_SHOW_LABELS && labels) 842 pfctl_print_title("LABEL COUNTERS:"); 843 } 844 if (opts & PF_OPT_CLRRULECTRS) 845 pr.action = PF_GET_CLR_CNTR; 846 847 pr.rule.action = PF_PASS; 848 if (ioctl(dev, DIOCGETRULES, &pr)) { 849 warn("DIOCGETRULES"); 850 goto error; 851 } 852 mnr = pr.nr; 853 for (nr = 0; nr < mnr; ++nr) { 854 pr.nr = nr; 855 if (ioctl(dev, DIOCGETRULE, &pr)) { 856 warn("DIOCGETRULE"); 857 goto error; 858 } 859 860 if (pfctl_get_pool(dev, &pr.rule.rpool, 861 nr, pr.ticket, PF_PASS, path) != 0) 862 goto error; 863 864 switch (format) { 865 case PFCTL_SHOW_LABELS: 866 if (pr.rule.label[0]) { 867 printf("%s %llu %llu %llu %llu" 868 " %llu %llu %llu %llu\n", 869 pr.rule.label, 870 (unsigned long long)pr.rule.evaluations, 871 (unsigned long long)(pr.rule.packets[0] + 872 pr.rule.packets[1]), 873 (unsigned long long)(pr.rule.bytes[0] + 874 pr.rule.bytes[1]), 875 (unsigned long long)pr.rule.packets[0], 876 (unsigned long long)pr.rule.bytes[0], 877 (unsigned long long)pr.rule.packets[1], 878 (unsigned long long)pr.rule.bytes[1], 879 (unsigned long long)pr.rule.states_tot); 880 } 881 break; 882 case PFCTL_SHOW_RULES: 883 brace = 0; 884 if (pr.rule.label[0] && (opts & PF_OPT_SHOWALL)) 885 labels = 1; 886 INDENT(depth, !(opts & PF_OPT_VERBOSE)); 887 if (pr.anchor_call[0] && 888 ((((p = strrchr(pr.anchor_call, '_')) != NULL) && 889 ((void *)p == (void *)pr.anchor_call || 890 *(--p) == '/')) || (opts & PF_OPT_RECURSE))) { 891 brace++; 892 if ((p = strrchr(pr.anchor_call, '/')) != 893 NULL) 894 p++; 895 else 896 p = &pr.anchor_call[0]; 897 } else 898 p = &pr.anchor_call[0]; 899 900 print_rule(&pr.rule, p, rule_numbers); 901 if (brace) 902 printf(" {\n"); 903 else 904 printf("\n"); 905 pfctl_print_rule_counters(&pr.rule, opts); 906 if (brace) { 907 pfctl_show_rules(dev, path, opts, format, 908 p, depth + 1); 909 INDENT(depth, !(opts & PF_OPT_VERBOSE)); 910 printf("}\n"); 911 } 912 break; 913 case PFCTL_SHOW_NOTHING: 914 break; 915 } 916 pfctl_clear_pool(&pr.rule.rpool); 917 } 918 path[len] = '\0'; 919 return (0); 920 921 error: 922 path[len] = '\0'; 923 return (-1); 924 } 925 926 int 927 pfctl_show_nat(int dev, int opts, char *anchorname) 928 { 929 struct pfioc_rule pr; 930 u_int32_t mnr, nr; 931 static int nattype[3] = { PF_NAT, PF_RDR, PF_BINAT }; 932 int i, dotitle = opts & PF_OPT_SHOWALL; 933 934 memset(&pr, 0, sizeof(pr)); 935 memcpy(pr.anchor, anchorname, sizeof(pr.anchor)); 936 for (i = 0; i < 3; i++) { 937 pr.rule.action = nattype[i]; 938 if (ioctl(dev, DIOCGETRULES, &pr)) { 939 warn("DIOCGETRULES"); 940 return (-1); 941 } 942 mnr = pr.nr; 943 for (nr = 0; nr < mnr; ++nr) { 944 pr.nr = nr; 945 if (ioctl(dev, DIOCGETRULE, &pr)) { 946 warn("DIOCGETRULE"); 947 return (-1); 948 } 949 if (pfctl_get_pool(dev, &pr.rule.rpool, nr, 950 pr.ticket, nattype[i], anchorname) != 0) 951 return (-1); 952 if (dotitle) { 953 pfctl_print_title("TRANSLATION RULES:"); 954 dotitle = 0; 955 } 956 print_rule(&pr.rule, pr.anchor_call, 957 opts & PF_OPT_VERBOSE2); 958 printf("\n"); 959 pfctl_print_rule_counters(&pr.rule, opts); 960 pfctl_clear_pool(&pr.rule.rpool); 961 } 962 } 963 return (0); 964 } 965 966 int 967 pfctl_show_src_nodes(int dev, int opts) 968 { 969 struct pfioc_src_nodes psn; 970 struct pf_src_node *p; 971 char *inbuf = NULL, *newinbuf = NULL; 972 unsigned int len = 0; 973 int i; 974 975 memset(&psn, 0, sizeof(psn)); 976 for (;;) { 977 psn.psn_len = len; 978 if (len) { 979 newinbuf = realloc(inbuf, len); 980 if (newinbuf == NULL) 981 err(1, "realloc"); 982 psn.psn_buf = inbuf = newinbuf; 983 } 984 if (ioctl(dev, DIOCGETSRCNODES, &psn) < 0) { 985 warn("DIOCGETSRCNODES"); 986 free(inbuf); 987 return (-1); 988 } 989 if (psn.psn_len + sizeof(struct pfioc_src_nodes) < len) 990 break; 991 if (len == 0 && psn.psn_len == 0) 992 goto done; 993 if (len == 0 && psn.psn_len != 0) 994 len = psn.psn_len; 995 if (psn.psn_len == 0) 996 goto done; /* no src_nodes */ 997 len *= 2; 998 } 999 p = psn.psn_src_nodes; 1000 if (psn.psn_len > 0 && (opts & PF_OPT_SHOWALL)) 1001 pfctl_print_title("SOURCE TRACKING NODES:"); 1002 for (i = 0; i < psn.psn_len; i += sizeof(*p)) { 1003 print_src_node(p, opts); 1004 p++; 1005 } 1006 done: 1007 free(inbuf); 1008 return (0); 1009 } 1010 1011 int 1012 pfctl_show_states(int dev, const char *iface, int opts) 1013 { 1014 struct pfioc_states ps; 1015 struct pfsync_state *p; 1016 char *inbuf = NULL, *newinbuf = NULL; 1017 unsigned int len = 0; 1018 int i, dotitle = (opts & PF_OPT_SHOWALL); 1019 1020 memset(&ps, 0, sizeof(ps)); 1021 for (;;) { 1022 ps.ps_len = len; 1023 if (len) { 1024 newinbuf = realloc(inbuf, len); 1025 if (newinbuf == NULL) 1026 err(1, "realloc"); 1027 ps.ps_buf = inbuf = newinbuf; 1028 } 1029 if (ioctl(dev, DIOCGETSTATES, &ps) < 0) { 1030 warn("DIOCGETSTATES"); 1031 free(inbuf); 1032 return (-1); 1033 } 1034 if (ps.ps_len + sizeof(struct pfioc_states) < len) 1035 break; 1036 if (len == 0 && ps.ps_len == 0) 1037 goto done; 1038 if (len == 0 && ps.ps_len != 0) 1039 len = ps.ps_len; 1040 if (ps.ps_len == 0) 1041 goto done; /* no states */ 1042 len *= 2; 1043 } 1044 p = ps.ps_states; 1045 for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) { 1046 if (iface != NULL && strcmp(p->ifname, iface)) 1047 continue; 1048 if (dotitle) { 1049 pfctl_print_title("STATES:"); 1050 dotitle = 0; 1051 } 1052 print_state(p, opts); 1053 } 1054 done: 1055 free(inbuf); 1056 return (0); 1057 } 1058 1059 int 1060 pfctl_show_status(int dev, int opts) 1061 { 1062 struct pf_status status; 1063 1064 if (ioctl(dev, DIOCGETSTATUS, &status)) { 1065 warn("DIOCGETSTATUS"); 1066 return (-1); 1067 } 1068 if (opts & PF_OPT_SHOWALL) 1069 pfctl_print_title("INFO:"); 1070 print_status(&status, opts); 1071 return (0); 1072 } 1073 1074 int 1075 pfctl_show_timeouts(int dev, int opts) 1076 { 1077 struct pfioc_tm pt; 1078 int i; 1079 1080 if (opts & PF_OPT_SHOWALL) 1081 pfctl_print_title("TIMEOUTS:"); 1082 memset(&pt, 0, sizeof(pt)); 1083 for (i = 0; pf_timeouts[i].name; i++) { 1084 pt.timeout = pf_timeouts[i].timeout; 1085 if (ioctl(dev, DIOCGETTIMEOUT, &pt)) 1086 err(1, "DIOCGETTIMEOUT"); 1087 printf("%-20s %10d", pf_timeouts[i].name, pt.seconds); 1088 if (pf_timeouts[i].timeout >= PFTM_ADAPTIVE_START && 1089 pf_timeouts[i].timeout <= PFTM_ADAPTIVE_END) 1090 printf(" states"); 1091 else 1092 printf("s"); 1093 printf("\n"); 1094 } 1095 return (0); 1096 1097 } 1098 1099 int 1100 pfctl_show_limits(int dev, int opts) 1101 { 1102 struct pfioc_limit pl; 1103 int i; 1104 1105 if (opts & PF_OPT_SHOWALL) 1106 pfctl_print_title("LIMITS:"); 1107 memset(&pl, 0, sizeof(pl)); 1108 for (i = 0; pf_limits[i].name; i++) { 1109 pl.index = pf_limits[i].index; 1110 if (ioctl(dev, DIOCGETLIMIT, &pl)) 1111 err(1, "DIOCGETLIMIT"); 1112 printf("%-13s ", pf_limits[i].name); 1113 if (pl.limit == UINT_MAX) 1114 printf("unlimited\n"); 1115 else 1116 printf("hard limit %8u\n", pl.limit); 1117 } 1118 return (0); 1119 } 1120 1121 /* callbacks for rule/nat/rdr/addr */ 1122 int 1123 pfctl_add_pool(struct pfctl *pf, struct pf_pool *p, sa_family_t af) 1124 { 1125 struct pf_pooladdr *pa; 1126 1127 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1128 if (ioctl(pf->dev, DIOCBEGINADDRS, &pf->paddr)) 1129 err(1, "DIOCBEGINADDRS"); 1130 } 1131 1132 pf->paddr.af = af; 1133 TAILQ_FOREACH(pa, &p->list, entries) { 1134 memcpy(&pf->paddr.addr, pa, sizeof(struct pf_pooladdr)); 1135 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1136 if (ioctl(pf->dev, DIOCADDADDR, &pf->paddr)) 1137 err(1, "DIOCADDADDR"); 1138 } 1139 } 1140 return (0); 1141 } 1142 1143 int 1144 pfctl_add_rule(struct pfctl *pf, struct pf_rule *r, const char *anchor_call) 1145 { 1146 u_int8_t rs_num; 1147 struct pf_rule *rule; 1148 struct pf_ruleset *rs; 1149 char *p; 1150 1151 rs_num = pf_get_ruleset_number(r->action == PF_MATCH ? PF_PASS : 1152 r->action); 1153 if (rs_num == PF_RULESET_MAX) 1154 errx(1, "Invalid rule type %d", r->action); 1155 1156 rs = &pf->anchor->ruleset; 1157 1158 if (anchor_call[0] && r->anchor == NULL) { 1159 /* 1160 * Don't make non-brace anchors part of the main anchor pool. 1161 */ 1162 if ((r->anchor = calloc(1, sizeof(*r->anchor))) == NULL) 1163 err(1, "pfctl_add_rule: calloc"); 1164 1165 pf_init_ruleset(&r->anchor->ruleset); 1166 r->anchor->ruleset.anchor = r->anchor; 1167 if (strlcpy(r->anchor->path, anchor_call, 1168 sizeof(rule->anchor->path)) >= sizeof(rule->anchor->path)) 1169 errx(1, "pfctl_add_rule: strlcpy"); 1170 if ((p = strrchr(anchor_call, '/')) != NULL) { 1171 if (!strlen(p)) 1172 err(1, "pfctl_add_rule: bad anchor name %s", 1173 anchor_call); 1174 } else 1175 p = (char *)anchor_call; 1176 if (strlcpy(r->anchor->name, p, 1177 sizeof(rule->anchor->name)) >= sizeof(rule->anchor->name)) 1178 errx(1, "pfctl_add_rule: strlcpy"); 1179 } 1180 1181 if ((rule = calloc(1, sizeof(*rule))) == NULL) 1182 err(1, "calloc"); 1183 bcopy(r, rule, sizeof(*rule)); 1184 TAILQ_INIT(&rule->rpool.list); 1185 pfctl_move_pool(&r->rpool, &rule->rpool); 1186 1187 TAILQ_INSERT_TAIL(rs->rules[rs_num].active.ptr, rule, entries); 1188 return (0); 1189 } 1190 1191 int 1192 pfctl_ruleset_trans(struct pfctl *pf, char *path, struct pf_anchor *a) 1193 { 1194 int osize = pf->trans->pfrb_size; 1195 1196 if ((pf->loadopt & PFCTL_FLAG_NAT) != 0) { 1197 if (pfctl_add_trans(pf->trans, PF_RULESET_NAT, path) || 1198 pfctl_add_trans(pf->trans, PF_RULESET_BINAT, path) || 1199 pfctl_add_trans(pf->trans, PF_RULESET_RDR, path)) 1200 return (1); 1201 } 1202 if (a == pf->astack[0] && ((altqsupport && 1203 (pf->loadopt & PFCTL_FLAG_ALTQ) != 0))) { 1204 if (pfctl_add_trans(pf->trans, PF_RULESET_ALTQ, path)) 1205 return (2); 1206 } 1207 if ((pf->loadopt & PFCTL_FLAG_FILTER) != 0) { 1208 if (pfctl_add_trans(pf->trans, PF_RULESET_FILTER, path)) 1209 return (3); 1210 } 1211 if (pf->loadopt & PFCTL_FLAG_TABLE) 1212 if (pfctl_add_trans(pf->trans, PF_RULESET_TABLE, path)) 1213 return (4); 1214 if (pfctl_trans(pf->dev, pf->trans, DIOCXBEGIN, osize)) 1215 return (5); 1216 1217 return (0); 1218 } 1219 1220 int 1221 pfctl_load_ruleset(struct pfctl *pf, char *path, struct pf_ruleset *rs, 1222 int rs_num, int depth) 1223 { 1224 struct pf_rule *r; 1225 int error, len = strlen(path); 1226 int brace = 0; 1227 1228 pf->anchor = rs->anchor; 1229 1230 if (path[0]) 1231 snprintf(&path[len], MAXPATHLEN - len, "/%s", pf->anchor->name); 1232 else 1233 snprintf(&path[len], MAXPATHLEN - len, "%s", pf->anchor->name); 1234 1235 if (depth) { 1236 if (TAILQ_FIRST(rs->rules[rs_num].active.ptr) != NULL) { 1237 brace++; 1238 if (pf->opts & PF_OPT_VERBOSE) 1239 printf(" {\n"); 1240 if ((pf->opts & PF_OPT_NOACTION) == 0 && 1241 (error = pfctl_ruleset_trans(pf, 1242 path, rs->anchor))) { 1243 printf("pfctl_load_rulesets: " 1244 "pfctl_ruleset_trans %d\n", error); 1245 goto error; 1246 } 1247 } else if (pf->opts & PF_OPT_VERBOSE) 1248 printf("\n"); 1249 1250 } 1251 1252 if (pf->optimize && rs_num == PF_RULESET_FILTER) 1253 pfctl_optimize_ruleset(pf, rs); 1254 1255 while ((r = TAILQ_FIRST(rs->rules[rs_num].active.ptr)) != NULL) { 1256 TAILQ_REMOVE(rs->rules[rs_num].active.ptr, r, entries); 1257 if ((error = pfctl_load_rule(pf, path, r, depth))) 1258 goto error; 1259 if (r->anchor) { 1260 if ((error = pfctl_load_ruleset(pf, path, 1261 &r->anchor->ruleset, rs_num, depth + 1))) 1262 goto error; 1263 } else if (pf->opts & PF_OPT_VERBOSE) 1264 printf("\n"); 1265 free(r); 1266 } 1267 if (brace && pf->opts & PF_OPT_VERBOSE) { 1268 INDENT(depth - 1, (pf->opts & PF_OPT_VERBOSE)); 1269 printf("}\n"); 1270 } 1271 path[len] = '\0'; 1272 return (0); 1273 1274 error: 1275 path[len] = '\0'; 1276 return (error); 1277 1278 } 1279 1280 int 1281 pfctl_load_rule(struct pfctl *pf, char *path, struct pf_rule *r, int depth) 1282 { 1283 u_int8_t rs_num = pf_get_ruleset_number(r->action); 1284 char *name; 1285 struct pfioc_rule pr; 1286 int len = strlen(path); 1287 1288 bzero(&pr, sizeof(pr)); 1289 /* set up anchor before adding to path for anchor_call */ 1290 if ((pf->opts & PF_OPT_NOACTION) == 0) 1291 pr.ticket = pfctl_get_ticket(pf->trans, rs_num, path); 1292 if (strlcpy(pr.anchor, path, sizeof(pr.anchor)) >= sizeof(pr.anchor)) 1293 errx(1, "pfctl_load_rule: strlcpy"); 1294 1295 if (r->anchor) { 1296 if (r->anchor->match) { 1297 if (path[0]) 1298 snprintf(&path[len], MAXPATHLEN - len, 1299 "/%s", r->anchor->name); 1300 else 1301 snprintf(&path[len], MAXPATHLEN - len, 1302 "%s", r->anchor->name); 1303 name = path; 1304 } else 1305 name = r->anchor->path; 1306 } else 1307 name = ""; 1308 1309 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1310 if (pfctl_add_pool(pf, &r->rpool, r->af)) 1311 return (1); 1312 pr.pool_ticket = pf->paddr.ticket; 1313 memcpy(&pr.rule, r, sizeof(pr.rule)); 1314 if (r->anchor && strlcpy(pr.anchor_call, name, 1315 sizeof(pr.anchor_call)) >= sizeof(pr.anchor_call)) 1316 errx(1, "pfctl_load_rule: strlcpy"); 1317 if (ioctl(pf->dev, DIOCADDRULE, &pr)) 1318 err(1, "DIOCADDRULE"); 1319 } 1320 1321 if (pf->opts & PF_OPT_VERBOSE) { 1322 INDENT(depth, !(pf->opts & PF_OPT_VERBOSE2)); 1323 print_rule(r, r->anchor ? r->anchor->name : "", 1324 pf->opts & PF_OPT_VERBOSE2); 1325 } 1326 path[len] = '\0'; 1327 pfctl_clear_pool(&r->rpool); 1328 return (0); 1329 } 1330 1331 int 1332 pfctl_add_altq(struct pfctl *pf, struct pf_altq *a) 1333 { 1334 if (altqsupport && 1335 (loadopt & PFCTL_FLAG_ALTQ) != 0) { 1336 memcpy(&pf->paltq->altq, a, sizeof(struct pf_altq)); 1337 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1338 if (ioctl(pf->dev, DIOCADDALTQ, pf->paltq)) { 1339 if (errno == ENXIO) 1340 errx(1, "qtype not configured"); 1341 else if (errno == ENODEV) 1342 errx(1, "%s: driver does not support " 1343 "altq", a->ifname); 1344 else 1345 err(1, "DIOCADDALTQ"); 1346 } 1347 } 1348 pfaltq_store(&pf->paltq->altq); 1349 } 1350 return (0); 1351 } 1352 1353 int 1354 pfctl_rules(int dev, char *filename, int opts, int optimize, 1355 char *anchorname, struct pfr_buffer *trans) 1356 { 1357 #define ERR(x) do { warn(x); goto _error; } while(0) 1358 #define ERRX(x) do { warnx(x); goto _error; } while(0) 1359 1360 struct pfr_buffer *t, buf; 1361 struct pfioc_altq pa; 1362 struct pfctl pf; 1363 struct pf_ruleset *rs; 1364 struct pfr_table trs; 1365 char *path; 1366 int osize; 1367 1368 RB_INIT(&pf_anchors); 1369 memset(&pf_main_anchor, 0, sizeof(pf_main_anchor)); 1370 pf_init_ruleset(&pf_main_anchor.ruleset); 1371 pf_main_anchor.ruleset.anchor = &pf_main_anchor; 1372 if (trans == NULL) { 1373 bzero(&buf, sizeof(buf)); 1374 buf.pfrb_type = PFRB_TRANS; 1375 t = &buf; 1376 osize = 0; 1377 } else { 1378 t = trans; 1379 osize = t->pfrb_size; 1380 } 1381 1382 memset(&pa, 0, sizeof(pa)); 1383 memset(&pf, 0, sizeof(pf)); 1384 memset(&trs, 0, sizeof(trs)); 1385 if ((path = calloc(1, MAXPATHLEN)) == NULL) 1386 ERRX("pfctl_rules: calloc"); 1387 if (strlcpy(trs.pfrt_anchor, anchorname, 1388 sizeof(trs.pfrt_anchor)) >= sizeof(trs.pfrt_anchor)) 1389 ERRX("pfctl_rules: strlcpy"); 1390 pf.dev = dev; 1391 pf.opts = opts; 1392 pf.optimize = optimize; 1393 pf.loadopt = loadopt; 1394 1395 /* non-brace anchor, create without resolving the path */ 1396 if ((pf.anchor = calloc(1, sizeof(*pf.anchor))) == NULL) 1397 ERRX("pfctl_rules: calloc"); 1398 rs = &pf.anchor->ruleset; 1399 pf_init_ruleset(rs); 1400 rs->anchor = pf.anchor; 1401 if (strlcpy(pf.anchor->path, anchorname, 1402 sizeof(pf.anchor->path)) >= sizeof(pf.anchor->path)) 1403 errx(1, "pfctl_add_rule: strlcpy"); 1404 if (strlcpy(pf.anchor->name, anchorname, 1405 sizeof(pf.anchor->name)) >= sizeof(pf.anchor->name)) 1406 errx(1, "pfctl_add_rule: strlcpy"); 1407 1408 1409 pf.astack[0] = pf.anchor; 1410 pf.asd = 0; 1411 if (anchorname[0]) 1412 pf.loadopt &= ~PFCTL_FLAG_ALTQ; 1413 pf.paltq = &pa; 1414 pf.trans = t; 1415 pfctl_init_options(&pf); 1416 1417 if ((opts & PF_OPT_NOACTION) == 0) { 1418 /* 1419 * XXX For the time being we need to open transactions for 1420 * the main ruleset before parsing, because tables are still 1421 * loaded at parse time. 1422 */ 1423 if (pfctl_ruleset_trans(&pf, anchorname, pf.anchor)) 1424 ERRX("pfctl_rules"); 1425 if (altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ)) 1426 pa.ticket = 1427 pfctl_get_ticket(t, PF_RULESET_ALTQ, anchorname); 1428 if (pf.loadopt & PFCTL_FLAG_TABLE) 1429 pf.astack[0]->ruleset.tticket = 1430 pfctl_get_ticket(t, PF_RULESET_TABLE, anchorname); 1431 } 1432 1433 if (parse_config(filename, &pf) < 0) { 1434 if ((opts & PF_OPT_NOACTION) == 0) 1435 ERRX("Syntax error in config file: " 1436 "pf rules not loaded"); 1437 else 1438 goto _error; 1439 } 1440 1441 if ((pf.loadopt & PFCTL_FLAG_NAT && 1442 (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_NAT, 0) || 1443 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_RDR, 0) || 1444 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_BINAT, 0))) || 1445 (pf.loadopt & PFCTL_FLAG_FILTER && 1446 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_FILTER, 0))) { 1447 if ((opts & PF_OPT_NOACTION) == 0) 1448 ERRX("Unable to load rules into kernel"); 1449 else 1450 goto _error; 1451 } 1452 1453 if ((altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ) != 0)) 1454 if (check_commit_altq(dev, opts) != 0) 1455 ERRX("errors in altq config"); 1456 1457 /* process "load anchor" directives */ 1458 if (!anchorname[0]) 1459 if (pfctl_load_anchors(dev, &pf, t) == -1) 1460 ERRX("load anchors"); 1461 1462 if (trans == NULL && (opts & PF_OPT_NOACTION) == 0) { 1463 if (!anchorname[0]) 1464 if (pfctl_load_options(&pf)) 1465 goto _error; 1466 if (pfctl_trans(dev, t, DIOCXCOMMIT, osize)) 1467 ERR("DIOCXCOMMIT"); 1468 } 1469 return (0); 1470 1471 _error: 1472 if (trans == NULL) { /* main ruleset */ 1473 if ((opts & PF_OPT_NOACTION) == 0) 1474 if (pfctl_trans(dev, t, DIOCXROLLBACK, osize)) 1475 err(1, "DIOCXROLLBACK"); 1476 exit(1); 1477 } else { /* sub ruleset */ 1478 return (-1); 1479 } 1480 1481 #undef ERR 1482 #undef ERRX 1483 } 1484 1485 FILE * 1486 pfctl_fopen(const char *name, const char *mode) 1487 { 1488 struct stat st; 1489 FILE *fp; 1490 1491 fp = fopen(name, mode); 1492 if (fp == NULL) 1493 return (NULL); 1494 if (fstat(fileno(fp), &st)) { 1495 fclose(fp); 1496 return (NULL); 1497 } 1498 if (S_ISDIR(st.st_mode)) { 1499 fclose(fp); 1500 errno = EISDIR; 1501 return (NULL); 1502 } 1503 return (fp); 1504 } 1505 1506 void 1507 pfctl_init_options(struct pfctl *pf) 1508 { 1509 int64_t mem; 1510 int mib[2]; 1511 size_t size; 1512 1513 pf->timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL; 1514 pf->timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL; 1515 pf->timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL; 1516 pf->timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL; 1517 pf->timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL; 1518 pf->timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL; 1519 pf->timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL; 1520 pf->timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL; 1521 pf->timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL; 1522 pf->timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL; 1523 pf->timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL; 1524 pf->timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL; 1525 pf->timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL; 1526 pf->timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL; 1527 pf->timeout[PFTM_FRAG] = PFTM_FRAG_VAL; 1528 pf->timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL; 1529 pf->timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL; 1530 pf->timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL; 1531 pf->timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START; 1532 pf->timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END; 1533 1534 pf->limit[PF_LIMIT_STATES] = PFSTATE_HIWAT; 1535 pf->limit[PF_LIMIT_FRAGS] = PFFRAG_FRENT_HIWAT; 1536 pf->limit[PF_LIMIT_SRC_NODES] = PFSNODE_HIWAT; 1537 pf->limit[PF_LIMIT_TABLES] = PFR_KTABLE_HIWAT; 1538 pf->limit[PF_LIMIT_TABLE_ENTRIES] = PFR_KENTRY_HIWAT; 1539 1540 mib[0] = CTL_HW; 1541 mib[1] = HW_PHYSMEM64; 1542 size = sizeof(mem); 1543 if (sysctl(mib, 2, &mem, &size, NULL, 0) == -1) 1544 err(1, "sysctl"); 1545 if (mem <= 100*1024*1024) 1546 pf->limit[PF_LIMIT_TABLE_ENTRIES] = PFR_KENTRY_HIWAT_SMALL; 1547 1548 pf->debug = PF_DEBUG_URGENT; 1549 } 1550 1551 int 1552 pfctl_load_options(struct pfctl *pf) 1553 { 1554 int i, error = 0; 1555 1556 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1557 return (0); 1558 1559 /* load limits */ 1560 for (i = 0; i < PF_LIMIT_MAX; i++) { 1561 if ((pf->opts & PF_OPT_MERGE) && !pf->limit_set[i]) 1562 continue; 1563 if (pfctl_load_limit(pf, i, pf->limit[i])) 1564 error = 1; 1565 } 1566 1567 /* 1568 * If we've set the limit, but haven't explicitly set adaptive 1569 * timeouts, do it now with a start of 60% and end of 120%. 1570 */ 1571 if (pf->limit_set[PF_LIMIT_STATES] && 1572 !pf->timeout_set[PFTM_ADAPTIVE_START] && 1573 !pf->timeout_set[PFTM_ADAPTIVE_END]) { 1574 pf->timeout[PFTM_ADAPTIVE_START] = 1575 (pf->limit[PF_LIMIT_STATES] / 10) * 6; 1576 pf->timeout_set[PFTM_ADAPTIVE_START] = 1; 1577 pf->timeout[PFTM_ADAPTIVE_END] = 1578 (pf->limit[PF_LIMIT_STATES] / 10) * 12; 1579 pf->timeout_set[PFTM_ADAPTIVE_END] = 1; 1580 } 1581 1582 /* load timeouts */ 1583 for (i = 0; i < PFTM_MAX; i++) { 1584 if ((pf->opts & PF_OPT_MERGE) && !pf->timeout_set[i]) 1585 continue; 1586 if (pfctl_load_timeout(pf, i, pf->timeout[i])) 1587 error = 1; 1588 } 1589 1590 /* load debug */ 1591 if (!(pf->opts & PF_OPT_MERGE) || pf->debug_set) 1592 if (pfctl_load_debug(pf, pf->debug)) 1593 error = 1; 1594 1595 /* load logif */ 1596 if (!(pf->opts & PF_OPT_MERGE) || pf->ifname_set) 1597 if (pfctl_load_logif(pf, pf->ifname)) 1598 error = 1; 1599 1600 /* load hostid */ 1601 if (!(pf->opts & PF_OPT_MERGE) || pf->hostid_set) 1602 if (pfctl_load_hostid(pf, pf->hostid)) 1603 error = 1; 1604 1605 /* load reassembly settings */ 1606 if (!(pf->opts & PF_OPT_MERGE) || pf->reass_set) 1607 if (pfctl_load_reassembly(pf, pf->reassemble)) 1608 error = 1; 1609 1610 return (error); 1611 } 1612 1613 int 1614 pfctl_set_limit(struct pfctl *pf, const char *opt, unsigned int limit) 1615 { 1616 int i; 1617 1618 1619 for (i = 0; pf_limits[i].name; i++) { 1620 if (strcasecmp(opt, pf_limits[i].name) == 0) { 1621 pf->limit[pf_limits[i].index] = limit; 1622 pf->limit_set[pf_limits[i].index] = 1; 1623 break; 1624 } 1625 } 1626 if (pf_limits[i].name == NULL) { 1627 warnx("Bad pool name."); 1628 return (1); 1629 } 1630 1631 if (pf->opts & PF_OPT_VERBOSE) 1632 printf("set limit %s %d\n", opt, limit); 1633 1634 return (0); 1635 } 1636 1637 int 1638 pfctl_load_limit(struct pfctl *pf, unsigned int index, unsigned int limit) 1639 { 1640 struct pfioc_limit pl; 1641 1642 memset(&pl, 0, sizeof(pl)); 1643 pl.index = index; 1644 pl.limit = limit; 1645 if (ioctl(pf->dev, DIOCSETLIMIT, &pl)) { 1646 if (errno == EBUSY) 1647 warnx("Current pool size exceeds requested hard limit"); 1648 else 1649 warnx("DIOCSETLIMIT"); 1650 return (1); 1651 } 1652 return (0); 1653 } 1654 1655 int 1656 pfctl_set_timeout(struct pfctl *pf, const char *opt, int seconds, int quiet) 1657 { 1658 int i; 1659 1660 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1661 return (0); 1662 1663 for (i = 0; pf_timeouts[i].name; i++) { 1664 if (strcasecmp(opt, pf_timeouts[i].name) == 0) { 1665 pf->timeout[pf_timeouts[i].timeout] = seconds; 1666 pf->timeout_set[pf_timeouts[i].timeout] = 1; 1667 break; 1668 } 1669 } 1670 1671 if (pf_timeouts[i].name == NULL) { 1672 warnx("Bad timeout name."); 1673 return (1); 1674 } 1675 1676 1677 if (pf->opts & PF_OPT_VERBOSE && ! quiet) 1678 printf("set timeout %s %d\n", opt, seconds); 1679 1680 return (0); 1681 } 1682 1683 int 1684 pfctl_load_timeout(struct pfctl *pf, unsigned int timeout, unsigned int seconds) 1685 { 1686 struct pfioc_tm pt; 1687 1688 memset(&pt, 0, sizeof(pt)); 1689 pt.timeout = timeout; 1690 pt.seconds = seconds; 1691 if (ioctl(pf->dev, DIOCSETTIMEOUT, &pt)) { 1692 warnx("DIOCSETTIMEOUT"); 1693 return (1); 1694 } 1695 return (0); 1696 } 1697 1698 int 1699 pfctl_set_reassembly(struct pfctl *pf, int on, int nodf) 1700 { 1701 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1702 return (0); 1703 1704 pf->reass_set = 1; 1705 if (on) { 1706 pf->reassemble = PF_REASS_ENABLED; 1707 if (nodf) 1708 pf->reassemble &= PF_REASS_NODF; 1709 } 1710 1711 if (pf->opts & PF_OPT_VERBOSE) 1712 printf("set reassemble %s %s\n", on ? "yes" : "no", 1713 nodf ? "no-df" : ""); 1714 1715 return (0); 1716 } 1717 1718 int 1719 pfctl_set_optimization(struct pfctl *pf, const char *opt) 1720 { 1721 const struct pf_hint *hint; 1722 int i, r; 1723 1724 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1725 return (0); 1726 1727 for (i = 0; pf_hints[i].name; i++) 1728 if (strcasecmp(opt, pf_hints[i].name) == 0) 1729 break; 1730 1731 hint = pf_hints[i].hint; 1732 if (hint == NULL) { 1733 warnx("invalid state timeouts optimization"); 1734 return (1); 1735 } 1736 1737 for (i = 0; hint[i].name; i++) 1738 if ((r = pfctl_set_timeout(pf, hint[i].name, 1739 hint[i].timeout, 1))) 1740 return (r); 1741 1742 if (pf->opts & PF_OPT_VERBOSE) 1743 printf("set optimization %s\n", opt); 1744 1745 return (0); 1746 } 1747 1748 int 1749 pfctl_set_logif(struct pfctl *pf, char *ifname) 1750 { 1751 1752 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1753 return (0); 1754 1755 if (!strcmp(ifname, "none")) { 1756 free(pf->ifname); 1757 pf->ifname = NULL; 1758 } else { 1759 pf->ifname = strdup(ifname); 1760 if (!pf->ifname) 1761 errx(1, "pfctl_set_logif: strdup"); 1762 } 1763 pf->ifname_set = 1; 1764 1765 if (pf->opts & PF_OPT_VERBOSE) 1766 printf("set loginterface %s\n", ifname); 1767 1768 return (0); 1769 } 1770 1771 int 1772 pfctl_load_logif(struct pfctl *pf, char *ifname) 1773 { 1774 struct pfioc_if pi; 1775 1776 memset(&pi, 0, sizeof(pi)); 1777 if (ifname && strlcpy(pi.ifname, ifname, 1778 sizeof(pi.ifname)) >= sizeof(pi.ifname)) { 1779 warnx("pfctl_load_logif: strlcpy"); 1780 return (1); 1781 } 1782 if (ioctl(pf->dev, DIOCSETSTATUSIF, &pi)) { 1783 warnx("DIOCSETSTATUSIF"); 1784 return (1); 1785 } 1786 return (0); 1787 } 1788 1789 int 1790 pfctl_set_hostid(struct pfctl *pf, u_int32_t hostid) 1791 { 1792 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1793 return (0); 1794 1795 HTONL(hostid); 1796 1797 pf->hostid = hostid; 1798 pf->hostid_set = 1; 1799 1800 if (pf->opts & PF_OPT_VERBOSE) 1801 printf("set hostid 0x%08x\n", ntohl(hostid)); 1802 1803 return (0); 1804 } 1805 1806 int 1807 pfctl_load_hostid(struct pfctl *pf, u_int32_t hostid) 1808 { 1809 if (ioctl(dev, DIOCSETHOSTID, &hostid)) { 1810 warnx("DIOCSETHOSTID"); 1811 return (1); 1812 } 1813 return (0); 1814 } 1815 1816 int 1817 pfctl_load_reassembly(struct pfctl *pf, u_int32_t reassembly) 1818 { 1819 if (ioctl(dev, DIOCSETREASS, &reassembly)) { 1820 warnx("DIOCSETREASS"); 1821 return (1); 1822 } 1823 return (0); 1824 } 1825 1826 int 1827 pfctl_set_debug(struct pfctl *pf, char *d) 1828 { 1829 u_int32_t level; 1830 1831 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1832 return (0); 1833 1834 if (!strcmp(d, "none")) 1835 pf->debug = PF_DEBUG_NONE; 1836 else if (!strcmp(d, "urgent")) 1837 pf->debug = PF_DEBUG_URGENT; 1838 else if (!strcmp(d, "misc")) 1839 pf->debug = PF_DEBUG_MISC; 1840 else if (!strcmp(d, "loud")) 1841 pf->debug = PF_DEBUG_NOISY; 1842 else { 1843 warnx("unknown debug level \"%s\"", d); 1844 return (-1); 1845 } 1846 1847 pf->debug_set = 1; 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_QUIET)) 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 **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:p: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 's': 2096 showopt = pfctl_lookup_option(optarg, showopt_list); 2097 if (showopt == NULL) { 2098 warnx("Unknown show modifier '%s'", optarg); 2099 usage(); 2100 } 2101 break; 2102 case 't': 2103 tableopt = optarg; 2104 break; 2105 case 'T': 2106 tblcmdopt = pfctl_lookup_option(optarg, tblcmdopt_list); 2107 if (tblcmdopt == NULL) { 2108 warnx("Unknown table command '%s'", optarg); 2109 usage(); 2110 } 2111 break; 2112 case 'v': 2113 if (opts & PF_OPT_VERBOSE) 2114 opts |= PF_OPT_VERBOSE2; 2115 opts |= PF_OPT_VERBOSE; 2116 break; 2117 case 'x': 2118 debugopt = pfctl_lookup_option(optarg, debugopt_list); 2119 if (debugopt == NULL) { 2120 warnx("Unknown debug level '%s'", optarg); 2121 usage(); 2122 } 2123 mode = O_RDWR; 2124 break; 2125 case 'z': 2126 opts |= PF_OPT_CLRRULECTRS; 2127 mode = O_RDWR; 2128 break; 2129 case 'h': 2130 /* FALLTHROUGH */ 2131 default: 2132 usage(); 2133 /* NOTREACHED */ 2134 } 2135 } 2136 2137 if (tblcmdopt != NULL) { 2138 argc -= optind; 2139 argv += optind; 2140 ch = *tblcmdopt; 2141 if (ch == 'l') { 2142 loadopt |= PFCTL_FLAG_TABLE; 2143 tblcmdopt = NULL; 2144 } else 2145 mode = strchr("acdefkrz", ch) ? O_RDWR : O_RDONLY; 2146 } else if (argc != optind) { 2147 warnx("unknown command line argument: %s ...", argv[optind]); 2148 usage(); 2149 /* NOTREACHED */ 2150 } 2151 if (loadopt == 0) 2152 loadopt = ~0; 2153 2154 if ((path = calloc(1, MAXPATHLEN)) == NULL) 2155 errx(1, "pfctl: calloc"); 2156 memset(anchorname, 0, sizeof(anchorname)); 2157 if (anchoropt != NULL) { 2158 int len = strlen(anchoropt); 2159 2160 if (anchoropt[len - 1] == '*') { 2161 if (len >= 2 && anchoropt[len - 2] == '/') 2162 anchoropt[len - 2] = '\0'; 2163 else 2164 anchoropt[len - 1] = '\0'; 2165 opts |= PF_OPT_RECURSE; 2166 } 2167 if (strlcpy(anchorname, anchoropt, 2168 sizeof(anchorname)) >= sizeof(anchorname)) 2169 errx(1, "anchor name '%s' too long", 2170 anchoropt); 2171 loadopt &= PFCTL_FLAG_FILTER|PFCTL_FLAG_NAT|PFCTL_FLAG_TABLE; 2172 } 2173 2174 if ((opts & PF_OPT_NOACTION) == 0) { 2175 dev = open(pf_device, mode); 2176 if (dev == -1) 2177 err(1, "%s", pf_device); 2178 altqsupport = pfctl_test_altqsupport(dev, opts); 2179 } else { 2180 dev = open(pf_device, O_RDONLY); 2181 if (dev >= 0) 2182 opts |= PF_OPT_DUMMYACTION; 2183 /* turn off options */ 2184 opts &= ~ (PF_OPT_DISABLE | PF_OPT_ENABLE); 2185 clearopt = showopt = debugopt = NULL; 2186 altqsupport = 1; 2187 } 2188 2189 if (opts & PF_OPT_DISABLE) 2190 if (pfctl_disable(dev, opts)) 2191 error = 1; 2192 2193 if (showopt != NULL) { 2194 switch (*showopt) { 2195 case 'A': 2196 pfctl_show_anchors(dev, opts, anchorname); 2197 break; 2198 case 'r': 2199 pfctl_load_fingerprints(dev, opts); 2200 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_RULES, 2201 anchorname, 0); 2202 break; 2203 case 'l': 2204 pfctl_load_fingerprints(dev, opts); 2205 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_LABELS, 2206 anchorname, 0); 2207 break; 2208 case 'n': 2209 pfctl_load_fingerprints(dev, opts); 2210 pfctl_show_nat(dev, opts, anchorname); 2211 break; 2212 case 'q': 2213 pfctl_show_altq(dev, ifaceopt, opts, 2214 opts & PF_OPT_VERBOSE2); 2215 break; 2216 case 's': 2217 pfctl_show_states(dev, ifaceopt, opts); 2218 break; 2219 case 'S': 2220 pfctl_show_src_nodes(dev, opts); 2221 break; 2222 case 'i': 2223 pfctl_show_status(dev, opts); 2224 break; 2225 case 't': 2226 pfctl_show_timeouts(dev, opts); 2227 break; 2228 case 'm': 2229 pfctl_show_limits(dev, opts); 2230 break; 2231 case 'a': 2232 opts |= PF_OPT_SHOWALL; 2233 pfctl_load_fingerprints(dev, opts); 2234 2235 pfctl_show_nat(dev, opts, anchorname); 2236 pfctl_show_rules(dev, path, opts, 0, anchorname, 0); 2237 pfctl_show_altq(dev, ifaceopt, opts, 0); 2238 pfctl_show_states(dev, ifaceopt, opts); 2239 pfctl_show_src_nodes(dev, opts); 2240 pfctl_show_status(dev, opts); 2241 pfctl_show_rules(dev, path, opts, 1, anchorname, 0); 2242 pfctl_show_timeouts(dev, opts); 2243 pfctl_show_limits(dev, opts); 2244 pfctl_show_tables(anchorname, opts); 2245 pfctl_show_fingerprints(opts); 2246 break; 2247 case 'T': 2248 pfctl_show_tables(anchorname, opts); 2249 break; 2250 case 'o': 2251 pfctl_load_fingerprints(dev, opts); 2252 pfctl_show_fingerprints(opts); 2253 break; 2254 case 'I': 2255 pfctl_show_ifaces(ifaceopt, opts); 2256 break; 2257 } 2258 } 2259 2260 if ((opts & PF_OPT_CLRRULECTRS) && showopt == NULL) 2261 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_NOTHING, 2262 anchorname, 0); 2263 2264 if (clearopt != NULL) { 2265 if (anchorname[0] == '_' || strstr(anchorname, "/_") != NULL) 2266 errx(1, "anchor names beginning with '_' cannot " 2267 "be modified from the command line"); 2268 2269 switch (*clearopt) { 2270 case 'r': 2271 pfctl_clear_rules(dev, opts, anchorname); 2272 break; 2273 case 'n': 2274 pfctl_clear_nat(dev, opts, anchorname); 2275 break; 2276 case 'q': 2277 pfctl_clear_altq(dev, opts); 2278 break; 2279 case 's': 2280 pfctl_clear_states(dev, ifaceopt, opts); 2281 break; 2282 case 'S': 2283 pfctl_clear_src_nodes(dev, opts); 2284 break; 2285 case 'i': 2286 pfctl_clear_stats(dev, opts); 2287 break; 2288 case 'a': 2289 pfctl_clear_rules(dev, opts, anchorname); 2290 pfctl_clear_nat(dev, opts, anchorname); 2291 pfctl_clear_tables(anchorname, opts); 2292 if (!*anchorname) { 2293 pfctl_clear_altq(dev, opts); 2294 pfctl_clear_states(dev, ifaceopt, opts); 2295 pfctl_clear_src_nodes(dev, opts); 2296 pfctl_clear_stats(dev, opts); 2297 pfctl_clear_fingerprints(dev, opts); 2298 pfctl_clear_interface_flags(dev, opts); 2299 } 2300 break; 2301 case 'o': 2302 pfctl_clear_fingerprints(dev, opts); 2303 break; 2304 case 'T': 2305 pfctl_clear_tables(anchorname, opts); 2306 break; 2307 } 2308 } 2309 if (state_killers) { 2310 if (!strcmp(state_kill[0], "label")) 2311 pfctl_label_kill_states(dev, ifaceopt, opts); 2312 else if (!strcmp(state_kill[0], "id")) 2313 pfctl_id_kill_states(dev, ifaceopt, opts); 2314 else 2315 pfctl_net_kill_states(dev, ifaceopt, opts); 2316 } 2317 2318 if (src_node_killers) 2319 pfctl_kill_src_nodes(dev, ifaceopt, opts); 2320 2321 if (tblcmdopt != NULL) { 2322 error = pfctl_command_tables(argc, argv, tableopt, 2323 tblcmdopt, rulesopt, anchorname, opts); 2324 rulesopt = NULL; 2325 } 2326 if (optiopt != NULL) { 2327 switch (*optiopt) { 2328 case 'n': 2329 optimize = 0; 2330 break; 2331 case 'b': 2332 optimize |= PF_OPTIMIZE_BASIC; 2333 break; 2334 case 'o': 2335 case 'p': 2336 optimize |= PF_OPTIMIZE_PROFILE; 2337 break; 2338 } 2339 } 2340 2341 if ((rulesopt != NULL) && (loadopt & PFCTL_FLAG_OPTION) && 2342 !anchorname[0]) 2343 if (pfctl_clear_interface_flags(dev, opts | PF_OPT_QUIET)) 2344 error = 1; 2345 2346 if (rulesopt != NULL && !(opts & (PF_OPT_MERGE|PF_OPT_NOACTION)) && 2347 !anchorname[0] && (loadopt & PFCTL_FLAG_OPTION)) 2348 if (pfctl_file_fingerprints(dev, opts, PF_OSFP_FILE)) 2349 error = 1; 2350 2351 if (rulesopt != NULL) { 2352 if (anchorname[0] == '_' || strstr(anchorname, "/_") != NULL) 2353 errx(1, "anchor names beginning with '_' cannot " 2354 "be modified from the command line"); 2355 if (pfctl_rules(dev, rulesopt, opts, optimize, 2356 anchorname, NULL)) 2357 error = 1; 2358 else if (!(opts & PF_OPT_NOACTION) && 2359 (loadopt & PFCTL_FLAG_TABLE)) 2360 warn_namespace_collision(NULL); 2361 } 2362 2363 if (opts & PF_OPT_ENABLE) 2364 if (pfctl_enable(dev, opts)) 2365 error = 1; 2366 2367 if (debugopt != NULL) { 2368 switch (*debugopt) { 2369 case 'n': 2370 pfctl_debug(dev, PF_DEBUG_NONE, opts); 2371 break; 2372 case 'u': 2373 pfctl_debug(dev, PF_DEBUG_URGENT, opts); 2374 break; 2375 case 'm': 2376 pfctl_debug(dev, PF_DEBUG_MISC, opts); 2377 break; 2378 case 'l': 2379 pfctl_debug(dev, PF_DEBUG_NOISY, opts); 2380 break; 2381 } 2382 } 2383 2384 exit(error); 2385 } 2386