1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2015-2019 Yandex LLC 5 * Copyright (c) 2015-2016 Alexander V. Chernikov <melifaro@FreeBSD.org> 6 * Copyright (c) 2015-2019 Andrey V. Elsukov <ae@FreeBSD.org> 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 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/types.h> 34 #include <sys/socket.h> 35 36 #include "ipfw2.h" 37 38 #include <ctype.h> 39 #include <err.h> 40 #include <errno.h> 41 #include <inttypes.h> 42 #include <netdb.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <sysexits.h> 47 48 #include <net/if.h> 49 #include <netinet/in.h> 50 #include <netinet/ip_fw.h> 51 #include <netinet6/ip_fw_nat64.h> 52 #include <arpa/inet.h> 53 54 static void nat64lsn_fill_ntlv(ipfw_obj_ntlv *ntlv, const char *name, 55 uint8_t set); 56 typedef int (nat64lsn_cb_t)(ipfw_nat64lsn_cfg *cfg, const char *name, 57 uint8_t set); 58 static int nat64lsn_foreach(nat64lsn_cb_t *f, const char *name, uint8_t set, 59 int sort); 60 61 static void nat64lsn_create(const char *name, uint8_t set, int ac, char **av); 62 static void nat64lsn_config(const char *name, uint8_t set, int ac, char **av); 63 static void nat64lsn_destroy(const char *name, uint8_t set); 64 static void nat64lsn_stats(const char *name, uint8_t set); 65 static void nat64lsn_reset_stats(const char *name, uint8_t set); 66 static int nat64lsn_show_cb(ipfw_nat64lsn_cfg *cfg, const char *name, 67 uint8_t set); 68 static int nat64lsn_destroy_cb(ipfw_nat64lsn_cfg *cfg, const char *name, 69 uint8_t set); 70 static int nat64lsn_states_cb(ipfw_nat64lsn_cfg *cfg, const char *name, 71 uint8_t set); 72 73 static struct _s_x nat64cmds[] = { 74 { "create", TOK_CREATE }, 75 { "config", TOK_CONFIG }, 76 { "destroy", TOK_DESTROY }, 77 { "list", TOK_LIST }, 78 { "show", TOK_LIST }, 79 { "stats", TOK_STATS }, 80 { NULL, 0 } 81 }; 82 83 static uint64_t 84 nat64lsn_print_states(void *buf) 85 { 86 char s[INET6_ADDRSTRLEN], a[INET_ADDRSTRLEN], f[INET_ADDRSTRLEN]; 87 const char *proto; 88 char sflags[4], *sf; 89 ipfw_obj_header *oh; 90 ipfw_obj_data *od; 91 ipfw_nat64lsn_stg_v1 *stg; 92 ipfw_nat64lsn_state_v1 *ste; 93 uint64_t next_idx; 94 uint32_t i; 95 int sz; 96 97 oh = (ipfw_obj_header *)buf; 98 od = (ipfw_obj_data *)(oh + 1); 99 stg = (ipfw_nat64lsn_stg_v1 *)(od + 1); 100 sz = od->head.length - sizeof(*od); 101 next_idx = 0; 102 proto = NULL; 103 while (sz > 0 && next_idx != 0xFF) { 104 next_idx = stg->next.index; 105 sz -= sizeof(*stg); 106 if (stg->count == 0) { 107 stg++; 108 continue; 109 } 110 /* 111 * NOTE: addresses are in network byte order, 112 * ports are in host byte order. 113 */ 114 inet_ntop(AF_INET, &stg->alias4, a, sizeof(a)); 115 ste = (ipfw_nat64lsn_state_v1 *)(stg + 1); 116 for (i = 0; i < stg->count && sz > 0; i++) { 117 sf = sflags; 118 inet_ntop(AF_INET6, &ste->host6, s, sizeof(s)); 119 inet_ntop(AF_INET, &ste->daddr, f, sizeof(f)); 120 switch (ste->proto) { 121 case IPPROTO_TCP: 122 proto = "TCP"; 123 if (ste->flags & 0x02) 124 *sf++ = 'S'; 125 if (ste->flags & 0x04) 126 *sf++ = 'E'; 127 if (ste->flags & 0x01) 128 *sf++ = 'F'; 129 break; 130 case IPPROTO_UDP: 131 proto = "UDP"; 132 break; 133 case IPPROTO_ICMP: 134 proto = "ICMPv6"; 135 break; 136 } 137 *sf = '\0'; 138 switch (ste->proto) { 139 case IPPROTO_TCP: 140 case IPPROTO_UDP: 141 printf("%s:%d\t%s:%d\t%s\t%s\t%d\t%s:%d\n", 142 s, ste->sport, a, ste->aport, proto, 143 sflags, ste->idle, f, ste->dport); 144 break; 145 case IPPROTO_ICMP: 146 printf("%s\t%s\t%s\t\t%d\t%s\n", 147 s, a, proto, ste->idle, f); 148 break; 149 default: 150 printf("%s\t%s\t%d\t\t%d\t%s\n", 151 s, a, ste->proto, ste->idle, f); 152 } 153 ste++; 154 sz -= sizeof(*ste); 155 } 156 stg = (ipfw_nat64lsn_stg_v1 *)ste; 157 } 158 return (next_idx); 159 } 160 161 static int 162 nat64lsn_states_cb(ipfw_nat64lsn_cfg *cfg, const char *name, uint8_t set) 163 { 164 ipfw_obj_header *oh; 165 ipfw_obj_data *od; 166 void *buf; 167 uint64_t next_idx; 168 size_t sz; 169 170 if (name != NULL && strcmp(cfg->name, name) != 0) 171 return (ESRCH); 172 173 if (set != 0 && cfg->set != set) 174 return (ESRCH); 175 176 next_idx = 0; 177 sz = 4096; 178 if ((buf = calloc(1, sz)) == NULL) 179 err(EX_OSERR, NULL); 180 do { 181 oh = (ipfw_obj_header *)buf; 182 oh->opheader.version = 1; /* Force using ov new API */ 183 od = (ipfw_obj_data *)(oh + 1); 184 nat64lsn_fill_ntlv(&oh->ntlv, cfg->name, set); 185 od->head.type = IPFW_TLV_OBJDATA; 186 od->head.length = sizeof(*od) + sizeof(next_idx); 187 *((uint64_t *)(od + 1)) = next_idx; 188 if (do_get3(IP_FW_NAT64LSN_LIST_STATES, &oh->opheader, &sz)) 189 err(EX_OSERR, "Error reading nat64lsn states"); 190 next_idx = nat64lsn_print_states(buf); 191 sz = 4096; 192 memset(buf, 0, sz); 193 } while (next_idx != 0xFF); 194 195 free(buf); 196 return (0); 197 } 198 199 static struct _s_x nat64statscmds[] = { 200 { "reset", TOK_RESET }, 201 { NULL, 0 } 202 }; 203 204 static void 205 ipfw_nat64lsn_stats_handler(const char *name, uint8_t set, int ac, char *av[]) 206 { 207 int tcmd; 208 209 if (ac == 0) { 210 nat64lsn_stats(name, set); 211 return; 212 } 213 NEED1("nat64lsn stats needs command"); 214 tcmd = get_token(nat64statscmds, *av, "nat64lsn stats command"); 215 switch (tcmd) { 216 case TOK_RESET: 217 nat64lsn_reset_stats(name, set); 218 } 219 } 220 221 static struct _s_x nat64listcmds[] = { 222 { "states", TOK_STATES }, 223 { "config", TOK_CONFIG }, 224 { NULL, 0 } 225 }; 226 227 static void 228 ipfw_nat64lsn_list_handler(const char *name, uint8_t set, int ac, char *av[]) 229 { 230 int tcmd; 231 232 if (ac == 0) { 233 nat64lsn_foreach(nat64lsn_show_cb, name, set, 1); 234 return; 235 } 236 NEED1("nat64lsn list needs command"); 237 tcmd = get_token(nat64listcmds, *av, "nat64lsn list command"); 238 switch (tcmd) { 239 case TOK_STATES: 240 nat64lsn_foreach(nat64lsn_states_cb, name, set, 1); 241 break; 242 case TOK_CONFIG: 243 nat64lsn_foreach(nat64lsn_show_cb, name, set, 1); 244 } 245 } 246 247 /* 248 * This one handles all nat64lsn-related commands 249 * ipfw [set N] nat64lsn NAME {create | config} ... 250 * ipfw [set N] nat64lsn NAME stats 251 * ipfw [set N] nat64lsn {NAME | all} destroy 252 * ipfw [set N] nat64lsn {NAME | all} {list | show} [config | states] 253 */ 254 #define nat64lsn_check_name table_check_name 255 void 256 ipfw_nat64lsn_handler(int ac, char *av[]) 257 { 258 const char *name; 259 int tcmd; 260 uint8_t set; 261 262 if (g_co.use_set != 0) 263 set = g_co.use_set - 1; 264 else 265 set = 0; 266 ac--; av++; 267 268 NEED1("nat64lsn needs instance name"); 269 name = *av; 270 if (nat64lsn_check_name(name) != 0) { 271 if (strcmp(name, "all") == 0) 272 name = NULL; 273 else 274 errx(EX_USAGE, "nat64lsn instance name %s is invalid", 275 name); 276 } 277 ac--; av++; 278 NEED1("nat64lsn needs command"); 279 280 tcmd = get_token(nat64cmds, *av, "nat64lsn command"); 281 if (name == NULL && tcmd != TOK_DESTROY && tcmd != TOK_LIST) 282 errx(EX_USAGE, "nat64lsn instance name required"); 283 switch (tcmd) { 284 case TOK_CREATE: 285 ac--; av++; 286 nat64lsn_create(name, set, ac, av); 287 break; 288 case TOK_CONFIG: 289 ac--; av++; 290 nat64lsn_config(name, set, ac, av); 291 break; 292 case TOK_LIST: 293 ac--; av++; 294 ipfw_nat64lsn_list_handler(name, set, ac, av); 295 break; 296 case TOK_DESTROY: 297 if (name == NULL) 298 nat64lsn_foreach(nat64lsn_destroy_cb, NULL, set, 0); 299 else 300 nat64lsn_destroy(name, set); 301 break; 302 case TOK_STATS: 303 ac--; av++; 304 ipfw_nat64lsn_stats_handler(name, set, ac, av); 305 } 306 } 307 308 static void 309 nat64lsn_fill_ntlv(ipfw_obj_ntlv *ntlv, const char *name, uint8_t set) 310 { 311 312 ntlv->head.type = IPFW_TLV_EACTION_NAME(1); /* it doesn't matter */ 313 ntlv->head.length = sizeof(ipfw_obj_ntlv); 314 ntlv->idx = 1; 315 ntlv->set = set; 316 strlcpy(ntlv->name, name, sizeof(ntlv->name)); 317 } 318 319 static void 320 nat64lsn_apply_mask(int af, void *prefix, uint16_t plen) 321 { 322 struct in6_addr mask6, *p6; 323 struct in_addr mask4, *p4; 324 325 if (af == AF_INET) { 326 p4 = (struct in_addr *)prefix; 327 mask4.s_addr = htonl(~((1 << (32 - plen)) - 1)); 328 p4->s_addr &= mask4.s_addr; 329 } else if (af == AF_INET6) { 330 p6 = (struct in6_addr *)prefix; 331 n2mask(&mask6, plen); 332 APPLY_MASK(p6, &mask6); 333 } 334 } 335 336 static void 337 nat64lsn_parse_prefix(const char *arg, int af, void *prefix, uint16_t *plen) 338 { 339 char *p, *l; 340 341 p = strdup(arg); 342 if (p == NULL) 343 err(EX_OSERR, NULL); 344 if ((l = strchr(p, '/')) != NULL) 345 *l++ = '\0'; 346 if (l == NULL) 347 errx(EX_USAGE, "Prefix length required"); 348 if (inet_pton(af, p, prefix) != 1) 349 errx(EX_USAGE, "Bad prefix: %s", p); 350 *plen = (uint16_t)strtol(l, &l, 10); 351 if (*l != '\0' || *plen == 0 || (af == AF_INET && *plen > 32) || 352 (af == AF_INET6 && *plen > 96)) 353 errx(EX_USAGE, "Bad prefix length: %s", arg); 354 nat64lsn_apply_mask(af, prefix, *plen); 355 free(p); 356 } 357 358 static uint32_t 359 nat64lsn_parse_int(const char *arg, const char *desc) 360 { 361 char *p; 362 uint32_t val; 363 364 val = (uint32_t)strtol(arg, &p, 10); 365 if (*p != '\0') 366 errx(EX_USAGE, "Invalid %s value: %s\n", desc, arg); 367 return (val); 368 } 369 370 static struct _s_x nat64newcmds[] = { 371 { "prefix6", TOK_PREFIX6 }, 372 { "jmaxlen", TOK_JMAXLEN }, 373 { "prefix4", TOK_PREFIX4 }, 374 { "host_del_age", TOK_HOST_DEL_AGE }, 375 { "pg_del_age", TOK_PG_DEL_AGE }, 376 { "tcp_syn_age", TOK_TCP_SYN_AGE }, 377 { "tcp_close_age",TOK_TCP_CLOSE_AGE }, 378 { "tcp_est_age", TOK_TCP_EST_AGE }, 379 { "udp_age", TOK_UDP_AGE }, 380 { "icmp_age", TOK_ICMP_AGE }, 381 { "states_chunks",TOK_STATES_CHUNKS }, 382 { "log", TOK_LOG }, 383 { "-log", TOK_LOGOFF }, 384 { "allow_private", TOK_PRIVATE }, 385 { "-allow_private", TOK_PRIVATEOFF }, 386 /* for compatibility with old configurations */ 387 { "max_ports", TOK_MAX_PORTS }, /* unused */ 388 { NULL, 0 } 389 }; 390 391 /* 392 * Creates new nat64lsn instance 393 * ipfw nat64lsn <NAME> create 394 * [ max_ports <N> ] 395 * Request: [ ipfw_obj_lheader ipfw_nat64lsn_cfg ] 396 */ 397 #define NAT64LSN_HAS_PREFIX4 0x01 398 #define NAT64LSN_HAS_PREFIX6 0x02 399 static void 400 nat64lsn_create(const char *name, uint8_t set, int ac, char **av) 401 { 402 char buf[sizeof(ipfw_obj_lheader) + sizeof(ipfw_nat64lsn_cfg)]; 403 ipfw_nat64lsn_cfg *cfg; 404 ipfw_obj_lheader *olh; 405 int tcmd, flags; 406 char *opt; 407 408 memset(&buf, 0, sizeof(buf)); 409 olh = (ipfw_obj_lheader *)buf; 410 cfg = (ipfw_nat64lsn_cfg *)(olh + 1); 411 412 /* Some reasonable defaults */ 413 inet_pton(AF_INET6, "64:ff9b::", &cfg->prefix6); 414 cfg->plen6 = 96; 415 cfg->set = set; 416 cfg->max_ports = NAT64LSN_MAX_PORTS; 417 cfg->jmaxlen = NAT64LSN_JMAXLEN; 418 cfg->nh_delete_delay = NAT64LSN_HOST_AGE; 419 cfg->pg_delete_delay = NAT64LSN_PG_AGE; 420 cfg->st_syn_ttl = NAT64LSN_TCP_SYN_AGE; 421 cfg->st_estab_ttl = NAT64LSN_TCP_EST_AGE; 422 cfg->st_close_ttl = NAT64LSN_TCP_FIN_AGE; 423 cfg->st_udp_ttl = NAT64LSN_UDP_AGE; 424 cfg->st_icmp_ttl = NAT64LSN_ICMP_AGE; 425 flags = NAT64LSN_HAS_PREFIX6; 426 while (ac > 0) { 427 tcmd = get_token(nat64newcmds, *av, "option"); 428 opt = *av; 429 ac--; av++; 430 431 switch (tcmd) { 432 case TOK_PREFIX4: 433 NEED1("IPv4 prefix required"); 434 nat64lsn_parse_prefix(*av, AF_INET, &cfg->prefix4, 435 &cfg->plen4); 436 flags |= NAT64LSN_HAS_PREFIX4; 437 ac--; av++; 438 break; 439 case TOK_PREFIX6: 440 NEED1("IPv6 prefix required"); 441 nat64lsn_parse_prefix(*av, AF_INET6, &cfg->prefix6, 442 &cfg->plen6); 443 if (ipfw_check_nat64prefix(&cfg->prefix6, 444 cfg->plen6) != 0 && 445 !IN6_IS_ADDR_UNSPECIFIED(&cfg->prefix6)) 446 errx(EX_USAGE, "Bad prefix6 %s", *av); 447 448 ac--; av++; 449 break; 450 case TOK_JMAXLEN: 451 NEED1("job queue length required"); 452 cfg->jmaxlen = nat64lsn_parse_int(*av, opt); 453 ac--; av++; 454 break; 455 case TOK_MAX_PORTS: 456 NEED1("Max per-user ports required"); 457 cfg->max_ports = nat64lsn_parse_int(*av, opt); 458 ac--; av++; 459 break; 460 case TOK_HOST_DEL_AGE: 461 NEED1("host delete delay required"); 462 cfg->nh_delete_delay = (uint16_t)nat64lsn_parse_int( 463 *av, opt); 464 ac--; av++; 465 break; 466 case TOK_PG_DEL_AGE: 467 NEED1("portgroup delete delay required"); 468 cfg->pg_delete_delay = (uint16_t)nat64lsn_parse_int( 469 *av, opt); 470 ac--; av++; 471 break; 472 case TOK_TCP_SYN_AGE: 473 NEED1("tcp syn age required"); 474 cfg->st_syn_ttl = (uint16_t)nat64lsn_parse_int( 475 *av, opt); 476 ac--; av++; 477 break; 478 case TOK_TCP_CLOSE_AGE: 479 NEED1("tcp close age required"); 480 cfg->st_close_ttl = (uint16_t)nat64lsn_parse_int( 481 *av, opt); 482 ac--; av++; 483 break; 484 case TOK_TCP_EST_AGE: 485 NEED1("tcp est age required"); 486 cfg->st_estab_ttl = (uint16_t)nat64lsn_parse_int( 487 *av, opt); 488 ac--; av++; 489 break; 490 case TOK_UDP_AGE: 491 NEED1("udp age required"); 492 cfg->st_udp_ttl = (uint16_t)nat64lsn_parse_int( 493 *av, opt); 494 ac--; av++; 495 break; 496 case TOK_ICMP_AGE: 497 NEED1("icmp age required"); 498 cfg->st_icmp_ttl = (uint16_t)nat64lsn_parse_int( 499 *av, opt); 500 ac--; av++; 501 break; 502 case TOK_STATES_CHUNKS: 503 NEED1("number of chunks required"); 504 cfg->states_chunks = (uint8_t)nat64lsn_parse_int( 505 *av, opt); 506 ac--; av++; 507 break; 508 case TOK_LOG: 509 cfg->flags |= NAT64_LOG; 510 break; 511 case TOK_LOGOFF: 512 cfg->flags &= ~NAT64_LOG; 513 break; 514 case TOK_PRIVATE: 515 cfg->flags |= NAT64_ALLOW_PRIVATE; 516 break; 517 case TOK_PRIVATEOFF: 518 cfg->flags &= ~NAT64_ALLOW_PRIVATE; 519 break; 520 } 521 } 522 523 /* Check validness */ 524 if ((flags & NAT64LSN_HAS_PREFIX4) != NAT64LSN_HAS_PREFIX4) 525 errx(EX_USAGE, "prefix4 required"); 526 527 olh->count = 1; 528 olh->objsize = sizeof(*cfg); 529 olh->size = sizeof(buf); 530 strlcpy(cfg->name, name, sizeof(cfg->name)); 531 if (do_set3(IP_FW_NAT64LSN_CREATE, &olh->opheader, sizeof(buf)) != 0) 532 err(EX_OSERR, "nat64lsn instance creation failed"); 533 } 534 535 /* 536 * Configures existing nat64lsn instance 537 * ipfw nat64lsn <NAME> config <options> 538 * Request: [ ipfw_obj_header ipfw_nat64lsn_cfg ] 539 */ 540 static void 541 nat64lsn_config(const char *name, uint8_t set, int ac, char **av) 542 { 543 char buf[sizeof(ipfw_obj_header) + sizeof(ipfw_nat64lsn_cfg)]; 544 ipfw_nat64lsn_cfg *cfg; 545 ipfw_obj_header *oh; 546 size_t sz; 547 char *opt; 548 int tcmd; 549 550 if (ac == 0) 551 errx(EX_USAGE, "config options required"); 552 memset(&buf, 0, sizeof(buf)); 553 oh = (ipfw_obj_header *)buf; 554 cfg = (ipfw_nat64lsn_cfg *)(oh + 1); 555 sz = sizeof(buf); 556 557 nat64lsn_fill_ntlv(&oh->ntlv, name, set); 558 if (do_get3(IP_FW_NAT64LSN_CONFIG, &oh->opheader, &sz) != 0) 559 err(EX_OSERR, "failed to get config for instance %s", name); 560 561 while (ac > 0) { 562 tcmd = get_token(nat64newcmds, *av, "option"); 563 opt = *av; 564 ac--; av++; 565 566 switch (tcmd) { 567 case TOK_MAX_PORTS: 568 NEED1("Max per-user ports required"); 569 cfg->max_ports = nat64lsn_parse_int(*av, opt); 570 ac--; av++; 571 break; 572 case TOK_JMAXLEN: 573 NEED1("job queue length required"); 574 cfg->jmaxlen = nat64lsn_parse_int(*av, opt); 575 ac--; av++; 576 break; 577 case TOK_HOST_DEL_AGE: 578 NEED1("host delete delay required"); 579 cfg->nh_delete_delay = (uint16_t)nat64lsn_parse_int( 580 *av, opt); 581 ac--; av++; 582 break; 583 case TOK_PG_DEL_AGE: 584 NEED1("portgroup delete delay required"); 585 cfg->pg_delete_delay = (uint16_t)nat64lsn_parse_int( 586 *av, opt); 587 ac--; av++; 588 break; 589 case TOK_TCP_SYN_AGE: 590 NEED1("tcp syn age required"); 591 cfg->st_syn_ttl = (uint16_t)nat64lsn_parse_int( 592 *av, opt); 593 ac--; av++; 594 break; 595 case TOK_TCP_CLOSE_AGE: 596 NEED1("tcp close age required"); 597 cfg->st_close_ttl = (uint16_t)nat64lsn_parse_int( 598 *av, opt); 599 ac--; av++; 600 break; 601 case TOK_TCP_EST_AGE: 602 NEED1("tcp est age required"); 603 cfg->st_estab_ttl = (uint16_t)nat64lsn_parse_int( 604 *av, opt); 605 ac--; av++; 606 break; 607 case TOK_UDP_AGE: 608 NEED1("udp age required"); 609 cfg->st_udp_ttl = (uint16_t)nat64lsn_parse_int( 610 *av, opt); 611 ac--; av++; 612 break; 613 case TOK_ICMP_AGE: 614 NEED1("icmp age required"); 615 cfg->st_icmp_ttl = (uint16_t)nat64lsn_parse_int( 616 *av, opt); 617 ac--; av++; 618 break; 619 case TOK_STATES_CHUNKS: 620 NEED1("number of chunks required"); 621 cfg->states_chunks = (uint8_t)nat64lsn_parse_int( 622 *av, opt); 623 ac--; av++; 624 break; 625 case TOK_LOG: 626 cfg->flags |= NAT64_LOG; 627 break; 628 case TOK_LOGOFF: 629 cfg->flags &= ~NAT64_LOG; 630 break; 631 case TOK_PRIVATE: 632 cfg->flags |= NAT64_ALLOW_PRIVATE; 633 break; 634 case TOK_PRIVATEOFF: 635 cfg->flags &= ~NAT64_ALLOW_PRIVATE; 636 break; 637 default: 638 errx(EX_USAGE, "Can't change %s option", opt); 639 } 640 } 641 642 if (do_set3(IP_FW_NAT64LSN_CONFIG, &oh->opheader, sizeof(buf)) != 0) 643 err(EX_OSERR, "nat64lsn instance configuration failed"); 644 } 645 646 /* 647 * Reset nat64lsn instance statistics specified by @oh->ntlv. 648 * Request: [ ipfw_obj_header ] 649 */ 650 static void 651 nat64lsn_reset_stats(const char *name, uint8_t set) 652 { 653 ipfw_obj_header oh; 654 655 memset(&oh, 0, sizeof(oh)); 656 nat64lsn_fill_ntlv(&oh.ntlv, name, set); 657 if (do_set3(IP_FW_NAT64LSN_RESET_STATS, &oh.opheader, sizeof(oh)) != 0) 658 err(EX_OSERR, "failed to reset stats for instance %s", name); 659 } 660 661 /* 662 * Destroys nat64lsn instance specified by @oh->ntlv. 663 * Request: [ ipfw_obj_header ] 664 */ 665 static void 666 nat64lsn_destroy(const char *name, uint8_t set) 667 { 668 ipfw_obj_header oh; 669 670 memset(&oh, 0, sizeof(oh)); 671 nat64lsn_fill_ntlv(&oh.ntlv, name, set); 672 if (do_set3(IP_FW_NAT64LSN_DESTROY, &oh.opheader, sizeof(oh)) != 0) 673 err(EX_OSERR, "failed to destroy nat instance %s", name); 674 } 675 676 /* 677 * Get nat64lsn instance statistics. 678 * Request: [ ipfw_obj_header ] 679 * Reply: [ ipfw_obj_header ipfw_obj_ctlv [ uint64_t x N ] ] 680 */ 681 static int 682 nat64lsn_get_stats(const char *name, uint8_t set, 683 struct ipfw_nat64lsn_stats *stats) 684 { 685 ipfw_obj_header *oh; 686 ipfw_obj_ctlv *oc; 687 size_t sz; 688 689 sz = sizeof(*oh) + sizeof(*oc) + sizeof(*stats); 690 oh = calloc(1, sz); 691 nat64lsn_fill_ntlv(&oh->ntlv, name, set); 692 if (do_get3(IP_FW_NAT64LSN_STATS, &oh->opheader, &sz) == 0) { 693 oc = (ipfw_obj_ctlv *)(oh + 1); 694 memcpy(stats, oc + 1, sizeof(*stats)); 695 free(oh); 696 return (0); 697 } 698 free(oh); 699 return (-1); 700 } 701 702 static void 703 nat64lsn_stats(const char *name, uint8_t set) 704 { 705 struct ipfw_nat64lsn_stats stats; 706 707 if (nat64lsn_get_stats(name, set, &stats) != 0) 708 err(EX_OSERR, "Error retrieving stats"); 709 710 if (g_co.use_set != 0 || set != 0) 711 printf("set %u ", set); 712 printf("nat64lsn %s\n", name); 713 printf("\t%ju packets translated from IPv6 to IPv4\n", 714 (uintmax_t)stats.opcnt64); 715 printf("\t%ju packets translated from IPv4 to IPv6\n", 716 (uintmax_t)stats.opcnt46); 717 printf("\t%ju IPv6 fragments created\n", 718 (uintmax_t)stats.ofrags); 719 printf("\t%ju IPv4 fragments received\n", 720 (uintmax_t)stats.ifrags); 721 printf("\t%ju output packets dropped due to no bufs, etc.\n", 722 (uintmax_t)stats.oerrors); 723 printf("\t%ju output packets discarded due to no IPv4 route\n", 724 (uintmax_t)stats.noroute4); 725 printf("\t%ju output packets discarded due to no IPv6 route\n", 726 (uintmax_t)stats.noroute6); 727 printf("\t%ju packets discarded due to unsupported protocol\n", 728 (uintmax_t)stats.noproto); 729 printf("\t%ju packets discarded due to memory allocation problems\n", 730 (uintmax_t)stats.nomem); 731 printf("\t%ju packets discarded due to some errors\n", 732 (uintmax_t)stats.dropped); 733 printf("\t%ju packets not matched with IPv4 prefix\n", 734 (uintmax_t)stats.nomatch4); 735 736 printf("\t%ju mbufs queued for post processing\n", 737 (uintmax_t)stats.jreinjected); 738 printf("\t%ju times the job queue was processed\n", 739 (uintmax_t)stats.jcalls); 740 printf("\t%ju job requests queued\n", 741 (uintmax_t)stats.jrequests); 742 printf("\t%ju job requests queue limit reached\n", 743 (uintmax_t)stats.jmaxlen); 744 printf("\t%ju job requests failed due to memory allocation problems\n", 745 (uintmax_t)stats.jnomem); 746 747 printf("\t%ju hosts allocated\n", (uintmax_t)stats.hostcount); 748 printf("\t%ju hosts requested\n", (uintmax_t)stats.jhostsreq); 749 printf("\t%ju host requests failed\n", (uintmax_t)stats.jhostfails); 750 751 printf("\t%ju portgroups requested\n", (uintmax_t)stats.jportreq); 752 printf("\t%ju portgroups allocated\n", (uintmax_t)stats.spgcreated); 753 printf("\t%ju portgroups deleted\n", (uintmax_t)stats.spgdeleted); 754 printf("\t%ju portgroup requests failed\n", 755 (uintmax_t)stats.jportfails); 756 printf("\t%ju portgroups allocated for TCP\n", 757 (uintmax_t)stats.tcpchunks); 758 printf("\t%ju portgroups allocated for UDP\n", 759 (uintmax_t)stats.udpchunks); 760 printf("\t%ju portgroups allocated for ICMP\n", 761 (uintmax_t)stats.icmpchunks); 762 763 printf("\t%ju states created\n", (uintmax_t)stats.screated); 764 printf("\t%ju states deleted\n", (uintmax_t)stats.sdeleted); 765 } 766 767 static int 768 nat64lsn_show_cb(ipfw_nat64lsn_cfg *cfg, const char *name, uint8_t set) 769 { 770 char abuf[INET6_ADDRSTRLEN]; 771 772 if (name != NULL && strcmp(cfg->name, name) != 0) 773 return (ESRCH); 774 775 if (g_co.use_set != 0 && cfg->set != set) 776 return (ESRCH); 777 778 if (g_co.use_set != 0 || cfg->set != 0) 779 printf("set %u ", cfg->set); 780 inet_ntop(AF_INET, &cfg->prefix4, abuf, sizeof(abuf)); 781 printf("nat64lsn %s prefix4 %s/%u", cfg->name, abuf, cfg->plen4); 782 inet_ntop(AF_INET6, &cfg->prefix6, abuf, sizeof(abuf)); 783 printf(" prefix6 %s/%u", abuf, cfg->plen6); 784 if (g_co.verbose || cfg->states_chunks > 1) 785 printf(" states_chunks %u", cfg->states_chunks); 786 if (g_co.verbose || cfg->nh_delete_delay != NAT64LSN_HOST_AGE) 787 printf(" host_del_age %u", cfg->nh_delete_delay); 788 if (g_co.verbose || cfg->pg_delete_delay != NAT64LSN_PG_AGE) 789 printf(" pg_del_age %u", cfg->pg_delete_delay); 790 if (g_co.verbose || cfg->st_syn_ttl != NAT64LSN_TCP_SYN_AGE) 791 printf(" tcp_syn_age %u", cfg->st_syn_ttl); 792 if (g_co.verbose || cfg->st_close_ttl != NAT64LSN_TCP_FIN_AGE) 793 printf(" tcp_close_age %u", cfg->st_close_ttl); 794 if (g_co.verbose || cfg->st_estab_ttl != NAT64LSN_TCP_EST_AGE) 795 printf(" tcp_est_age %u", cfg->st_estab_ttl); 796 if (g_co.verbose || cfg->st_udp_ttl != NAT64LSN_UDP_AGE) 797 printf(" udp_age %u", cfg->st_udp_ttl); 798 if (g_co.verbose || cfg->st_icmp_ttl != NAT64LSN_ICMP_AGE) 799 printf(" icmp_age %u", cfg->st_icmp_ttl); 800 if (g_co.verbose || cfg->jmaxlen != NAT64LSN_JMAXLEN) 801 printf(" jmaxlen %u", cfg->jmaxlen); 802 if (cfg->flags & NAT64_LOG) 803 printf(" log"); 804 if (cfg->flags & NAT64_ALLOW_PRIVATE) 805 printf(" allow_private"); 806 printf("\n"); 807 return (0); 808 } 809 810 static int 811 nat64lsn_destroy_cb(ipfw_nat64lsn_cfg *cfg, const char *name __unused, 812 uint8_t set) 813 { 814 815 if (g_co.use_set != 0 && cfg->set != set) 816 return (ESRCH); 817 818 nat64lsn_destroy(cfg->name, cfg->set); 819 return (0); 820 } 821 822 823 /* 824 * Compare nat64lsn instances names. 825 * Honor number comparison. 826 */ 827 static int 828 nat64name_cmp(const void *a, const void *b) 829 { 830 const ipfw_nat64lsn_cfg *ca, *cb; 831 832 ca = (const ipfw_nat64lsn_cfg *)a; 833 cb = (const ipfw_nat64lsn_cfg *)b; 834 835 if (ca->set > cb->set) 836 return (1); 837 else if (ca->set < cb->set) 838 return (-1); 839 return (stringnum_cmp(ca->name, cb->name)); 840 } 841 842 /* 843 * Retrieves nat64lsn instance list from kernel, 844 * optionally sorts it and calls requested function for each instance. 845 * 846 * Request: [ ipfw_obj_lheader ] 847 * Reply: [ ipfw_obj_lheader ipfw_nat64lsn_cfg x N ] 848 */ 849 static int 850 nat64lsn_foreach(nat64lsn_cb_t *f, const char *name, uint8_t set, int sort) 851 { 852 ipfw_obj_lheader *olh; 853 ipfw_nat64lsn_cfg *cfg; 854 size_t sz; 855 uint32_t i; 856 int error; 857 858 /* Start with reasonable default */ 859 sz = sizeof(*olh) + 16 * sizeof(ipfw_nat64lsn_cfg); 860 861 for (;;) { 862 if ((olh = calloc(1, sz)) == NULL) 863 return (ENOMEM); 864 865 olh->size = sz; 866 if (do_get3(IP_FW_NAT64LSN_LIST, &olh->opheader, &sz) != 0) { 867 sz = olh->size; 868 free(olh); 869 if (errno != ENOMEM) 870 return (errno); 871 continue; 872 } 873 874 if (sort != 0) 875 qsort(olh + 1, olh->count, olh->objsize, 876 nat64name_cmp); 877 878 cfg = (ipfw_nat64lsn_cfg *)(olh + 1); 879 for (i = 0; i < olh->count; i++) { 880 error = f(cfg, name, set); /* Ignore errors for now */ 881 cfg = (ipfw_nat64lsn_cfg *)((caddr_t)cfg + 882 olh->objsize); 883 } 884 free(olh); 885 break; 886 } 887 return (0); 888 } 889 890