1 /* $OpenBSD: parser.c,v 1.88 2018/12/19 15:27:29 claudio Exp $ */ 2 3 /* 4 * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> 5 * Copyright (c) 2016 Job Snijders <job@instituut.net> 6 * Copyright (c) 2016 Peter Hessler <phessler@openbsd.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21 #include <sys/types.h> 22 23 #include <err.h> 24 #include <errno.h> 25 #include <fcntl.h> 26 #include <limits.h> 27 #include <netdb.h> 28 #include <stdio.h> 29 #include <stdlib.h> 30 #include <string.h> 31 #include <unistd.h> 32 33 #include "parser.h" 34 #include "irrfilter.h" 35 36 enum token_type { 37 NOTOKEN, 38 ENDTOKEN, 39 KEYWORD, 40 ADDRESS, 41 PEERADDRESS, 42 FLAG, 43 ASNUM, 44 ASTYPE, 45 PREFIX, 46 PEERDESC, 47 RIBNAME, 48 SHUTDOWN_COMMUNICATION, 49 COMMUNITY, 50 EXTCOMMUNITY, 51 EXTCOM_SUBTYPE, 52 LARGE_COMMUNITY, 53 LOCALPREF, 54 MED, 55 NEXTHOP, 56 PFTABLE, 57 PREPNBR, 58 PREPSELF, 59 WEIGHT, 60 FAMILY, 61 GETOPT, 62 RTABLE, 63 FILENAME, 64 BULK 65 }; 66 67 enum getopts { 68 GETOPT_NONE, 69 GETOPT_IRRFILTER 70 }; 71 72 struct token { 73 enum token_type type; 74 const char *keyword; 75 int value; 76 const struct token *next; 77 }; 78 79 static const struct token t_main[]; 80 static const struct token t_show[]; 81 static const struct token t_show_summary[]; 82 static const struct token t_show_fib[]; 83 static const struct token t_show_rib[]; 84 static const struct token t_show_ovs[]; 85 static const struct token t_show_mrt[]; 86 static const struct token t_show_mrt_file[]; 87 static const struct token t_show_rib_neigh[]; 88 static const struct token t_show_mrt_neigh[]; 89 static const struct token t_show_rib_rib[]; 90 static const struct token t_show_neighbor[]; 91 static const struct token t_show_neighbor_modifiers[]; 92 static const struct token t_fib[]; 93 static const struct token t_neighbor[]; 94 static const struct token t_neighbor_modifiers[]; 95 static const struct token t_show_rib_as[]; 96 static const struct token t_show_mrt_as[]; 97 static const struct token t_show_prefix[]; 98 static const struct token t_show_ip[]; 99 static const struct token t_show_community[]; 100 static const struct token t_show_extcommunity[]; 101 static const struct token t_show_ext_subtype[]; 102 static const struct token t_show_largecommunity[]; 103 static const struct token t_network[]; 104 static const struct token t_network_show[]; 105 static const struct token t_prefix[]; 106 static const struct token t_set[]; 107 static const struct token t_community[]; 108 static const struct token t_extcommunity[]; 109 static const struct token t_ext_subtype[]; 110 static const struct token t_largecommunity[]; 111 static const struct token t_localpref[]; 112 static const struct token t_med[]; 113 static const struct token t_nexthop[]; 114 static const struct token t_pftable[]; 115 static const struct token t_prepnbr[]; 116 static const struct token t_prepself[]; 117 static const struct token t_weight[]; 118 static const struct token t_irrfilter[]; 119 static const struct token t_irrfilter_opts[]; 120 static const struct token t_log[]; 121 static const struct token t_fib_table[]; 122 static const struct token t_show_fib_table[]; 123 124 static const struct token t_main[] = { 125 { KEYWORD, "reload", RELOAD, NULL}, 126 { KEYWORD, "show", SHOW, t_show}, 127 { KEYWORD, "fib", FIB, t_fib}, 128 { KEYWORD, "neighbor", NEIGHBOR, t_neighbor}, 129 { KEYWORD, "network", NONE, t_network}, 130 { KEYWORD, "irrfilter", IRRFILTER, t_irrfilter}, 131 { KEYWORD, "log", NONE, t_log}, 132 { ENDTOKEN, "", NONE, NULL} 133 }; 134 135 static const struct token t_show[] = { 136 { NOTOKEN, "", NONE, NULL}, 137 { KEYWORD, "fib", SHOW_FIB, t_show_fib}, 138 { KEYWORD, "interfaces", SHOW_INTERFACE, NULL}, 139 { KEYWORD, "neighbor", SHOW_NEIGHBOR, t_show_neighbor}, 140 { KEYWORD, "network", NETWORK_SHOW, t_network_show}, 141 { KEYWORD, "nexthop", SHOW_NEXTHOP, NULL}, 142 { KEYWORD, "rib", SHOW_RIB, t_show_rib}, 143 { KEYWORD, "tables", SHOW_FIB_TABLES, NULL}, 144 { KEYWORD, "ip", NONE, t_show_ip}, 145 { KEYWORD, "summary", SHOW_SUMMARY, t_show_summary}, 146 { KEYWORD, "mrt", SHOW_MRT, t_show_mrt}, 147 { ENDTOKEN, "", NONE, NULL} 148 }; 149 150 static const struct token t_show_summary[] = { 151 { NOTOKEN, "", NONE, NULL}, 152 { KEYWORD, "terse", SHOW_SUMMARY_TERSE, NULL}, 153 { ENDTOKEN, "", NONE, NULL} 154 }; 155 156 static const struct token t_show_fib[] = { 157 { NOTOKEN, "", NONE, NULL}, 158 { FLAG, "connected", F_CONNECTED, t_show_fib}, 159 { FLAG, "static", F_STATIC, t_show_fib}, 160 { FLAG, "bgp", F_BGPD_INSERTED, t_show_fib}, 161 { FLAG, "nexthop", F_NEXTHOP, t_show_fib}, 162 { KEYWORD, "table", NONE, t_show_fib_table}, 163 { FAMILY, "", NONE, t_show_fib}, 164 { ADDRESS, "", NONE, NULL}, 165 { ENDTOKEN, "", NONE, NULL} 166 }; 167 168 static const struct token t_show_rib[] = { 169 { NOTOKEN, "", NONE, NULL}, 170 { ASTYPE, "as", AS_ALL, t_show_rib_as}, 171 { ASTYPE, "source-as", AS_SOURCE, t_show_rib_as}, 172 { ASTYPE, "transit-as", AS_TRANSIT, t_show_rib_as}, 173 { ASTYPE, "peer-as", AS_PEER, t_show_rib_as}, 174 { ASTYPE, "empty-as", AS_EMPTY, t_show_rib}, 175 { KEYWORD, "community", NONE, t_show_community}, 176 { KEYWORD, "ext-community", NONE, t_show_extcommunity}, 177 { KEYWORD, "large-community", NONE, t_show_largecommunity}, 178 { FLAG, "best", F_CTL_ACTIVE, t_show_rib}, 179 { FLAG, "selected", F_CTL_ACTIVE, t_show_rib}, 180 { FLAG, "detail", F_CTL_DETAIL, t_show_rib}, 181 { FLAG, "error", F_CTL_INVALID, t_show_rib}, 182 { FLAG, "ssv" , F_CTL_SSV, t_show_rib}, 183 { FLAG, "in", F_CTL_ADJ_IN, t_show_rib}, 184 { FLAG, "out", F_CTL_ADJ_OUT, t_show_rib}, 185 { KEYWORD, "neighbor", NONE, t_show_rib_neigh}, 186 { KEYWORD, "table", NONE, t_show_rib_rib}, 187 { KEYWORD, "summary", SHOW_SUMMARY, t_show_summary}, 188 { KEYWORD, "memory", SHOW_RIB_MEM, NULL}, 189 { KEYWORD, "ovs", NONE, t_show_ovs}, 190 { FAMILY, "", NONE, t_show_rib}, 191 { PREFIX, "", NONE, t_show_prefix}, 192 { ENDTOKEN, "", NONE, NULL} 193 }; 194 195 static const struct token t_show_ovs[] = { 196 { FLAG, "valid" , F_CTL_OVS_VALID, t_show_rib}, 197 { FLAG, "invalid", F_CTL_OVS_INVALID, t_show_rib}, 198 { FLAG, "not-found", F_CTL_OVS_NOTFOUND, t_show_rib}, 199 { ENDTOKEN, "", NONE, NULL} 200 }; 201 202 static const struct token t_show_mrt[] = { 203 { NOTOKEN, "", NONE, NULL}, 204 { ASTYPE, "as", AS_ALL, t_show_mrt_as}, 205 { ASTYPE, "source-as", AS_SOURCE, t_show_mrt_as}, 206 { ASTYPE, "transit-as", AS_TRANSIT, t_show_mrt_as}, 207 { ASTYPE, "peer-as", AS_PEER, t_show_mrt_as}, 208 { ASTYPE, "empty-as", AS_EMPTY, t_show_mrt}, 209 { FLAG, "detail", F_CTL_DETAIL, t_show_mrt}, 210 { FLAG, "ssv" , F_CTL_SSV, t_show_mrt}, 211 { KEYWORD, "neighbor", NONE, t_show_mrt_neigh}, 212 { KEYWORD, "file", NONE, t_show_mrt_file}, 213 { FAMILY, "", NONE, t_show_mrt}, 214 { PREFIX, "", NONE, t_show_prefix}, 215 { ENDTOKEN, "", NONE, NULL} 216 }; 217 218 static const struct token t_show_mrt_file[] = { 219 { FILENAME, "", NONE, t_show_mrt}, 220 { ENDTOKEN, "", NONE, NULL} 221 }; 222 223 static const struct token t_show_rib_neigh[] = { 224 { PEERADDRESS, "", NONE, t_show_rib}, 225 { PEERDESC, "", NONE, t_show_rib}, 226 { ENDTOKEN, "", NONE, NULL} 227 }; 228 229 static const struct token t_show_mrt_neigh[] = { 230 { PEERADDRESS, "", NONE, t_show_mrt}, 231 { ENDTOKEN, "", NONE, NULL} 232 }; 233 234 static const struct token t_show_rib_rib[] = { 235 { RIBNAME, "", NONE, t_show_rib}, 236 { ENDTOKEN, "", NONE, NULL} 237 }; 238 239 static const struct token t_show_neighbor[] = { 240 { NOTOKEN, "", NONE, NULL}, 241 { PEERADDRESS, "", NONE, t_show_neighbor_modifiers}, 242 { PEERDESC, "", NONE, t_show_neighbor_modifiers}, 243 { ENDTOKEN, "", NONE, NULL} 244 }; 245 246 static const struct token t_show_neighbor_modifiers[] = { 247 { NOTOKEN, "", NONE, NULL}, 248 { KEYWORD, "timers", SHOW_NEIGHBOR_TIMERS, NULL}, 249 { KEYWORD, "messages", SHOW_NEIGHBOR, NULL}, 250 { KEYWORD, "terse", SHOW_NEIGHBOR_TERSE, NULL}, 251 { ENDTOKEN, "", NONE, NULL} 252 }; 253 254 static const struct token t_fib[] = { 255 { KEYWORD, "couple", FIB_COUPLE, NULL}, 256 { KEYWORD, "decouple", FIB_DECOUPLE, NULL}, 257 { KEYWORD, "table", NONE, t_fib_table}, 258 { ENDTOKEN, "", NONE, NULL} 259 }; 260 261 static const struct token t_neighbor[] = { 262 { PEERADDRESS, "", NONE, t_neighbor_modifiers}, 263 { PEERDESC, "", NONE, t_neighbor_modifiers}, 264 { ENDTOKEN, "", NONE, NULL} 265 }; 266 267 static const struct token t_nei_mod_shutc[] = { 268 { NOTOKEN, "", NONE, NULL}, 269 { SHUTDOWN_COMMUNICATION, "", NONE, NULL}, 270 { ENDTOKEN, "", NONE, NULL} 271 }; 272 273 static const struct token t_neighbor_modifiers[] = { 274 { KEYWORD, "up", NEIGHBOR_UP, NULL}, 275 { KEYWORD, "down", NEIGHBOR_DOWN, t_nei_mod_shutc}, 276 { KEYWORD, "clear", NEIGHBOR_CLEAR, t_nei_mod_shutc}, 277 { KEYWORD, "refresh", NEIGHBOR_RREFRESH, NULL}, 278 { KEYWORD, "destroy", NEIGHBOR_DESTROY, NULL}, 279 { ENDTOKEN, "", NONE, NULL} 280 }; 281 282 static const struct token t_show_rib_as[] = { 283 { ASNUM, "", NONE, t_show_rib}, 284 { ENDTOKEN, "", NONE, NULL} 285 }; 286 287 static const struct token t_show_mrt_as[] = { 288 { ASNUM, "", NONE, t_show_mrt}, 289 { ENDTOKEN, "", NONE, NULL} 290 }; 291 292 static const struct token t_show_prefix[] = { 293 { NOTOKEN, "", NONE, NULL}, 294 { FLAG, "all", F_LONGER, NULL}, 295 { FLAG, "longer-prefixes", F_LONGER, NULL}, 296 { ENDTOKEN, "", NONE, NULL} 297 }; 298 299 static const struct token t_show_ip[] = { 300 { KEYWORD, "bgp", SHOW_RIB, t_show_rib}, 301 { ENDTOKEN, "", NONE, NULL} 302 }; 303 304 static const struct token t_show_community[] = { 305 { COMMUNITY, "", NONE, t_show_rib}, 306 { ENDTOKEN, "", NONE, NULL} 307 }; 308 309 static const struct token t_show_extcommunity[] = { 310 { EXTCOM_SUBTYPE, "bdc", NONE, t_show_ext_subtype}, 311 { EXTCOM_SUBTYPE, "defgw", NONE, t_show_ext_subtype}, 312 { EXTCOM_SUBTYPE, "esi-lab", NONE, t_show_ext_subtype}, 313 { EXTCOM_SUBTYPE, "esi-rt", NONE, t_show_ext_subtype}, 314 { EXTCOM_SUBTYPE, "l2vid", NONE, t_show_ext_subtype}, 315 { EXTCOM_SUBTYPE, "mac-mob", NONE, t_show_ext_subtype}, 316 { EXTCOM_SUBTYPE, "odi", NONE, t_show_ext_subtype}, 317 { EXTCOM_SUBTYPE, "ort", NONE, t_show_ext_subtype}, 318 { EXTCOM_SUBTYPE, "ori", NONE, t_show_ext_subtype}, 319 { EXTCOM_SUBTYPE, "ovs", NONE, t_show_ext_subtype}, 320 { EXTCOM_SUBTYPE, "rt", NONE, t_show_ext_subtype}, 321 { EXTCOM_SUBTYPE, "soo", NONE, t_show_ext_subtype}, 322 { EXTCOM_SUBTYPE, "srcas", NONE, t_show_ext_subtype}, 323 { EXTCOM_SUBTYPE, "vrfri", NONE, t_show_ext_subtype}, 324 { ENDTOKEN, "", NONE, NULL} 325 }; 326 327 static const struct token t_show_ext_subtype[] = { 328 { EXTCOMMUNITY, "", NONE, t_show_rib}, 329 { ENDTOKEN, "", NONE, NULL} 330 }; 331 332 static const struct token t_show_largecommunity[] = { 333 { LARGE_COMMUNITY, "", NONE, t_show_rib}, 334 { ENDTOKEN, "", NONE, NULL} 335 }; 336 337 static const struct token t_network[] = { 338 { KEYWORD, "add", NETWORK_ADD, t_prefix}, 339 { KEYWORD, "delete", NETWORK_REMOVE, t_prefix}, 340 { KEYWORD, "flush", NETWORK_FLUSH, NULL}, 341 { KEYWORD, "show", NETWORK_SHOW, t_network_show}, 342 { KEYWORD, "mrt", NETWORK_MRT, t_show_mrt}, 343 { KEYWORD, "bulk", NETWORK_BULK_ADD, t_set}, 344 { ENDTOKEN, "", NONE, NULL} 345 }; 346 347 static const struct token t_prefix[] = { 348 { PREFIX, "", NONE, t_set}, 349 { ENDTOKEN, "", NONE, NULL} 350 }; 351 352 static const struct token t_network_show[] = { 353 { NOTOKEN, "", NONE, NULL}, 354 { FAMILY, "", NONE, NULL}, 355 { ENDTOKEN, "", NONE, NULL} 356 }; 357 358 static const struct token t_set[] = { 359 { NOTOKEN, "", NONE, NULL}, 360 { KEYWORD, "community", NONE, t_community}, 361 { KEYWORD, "ext-community", NONE, t_extcommunity}, 362 { KEYWORD, "large-community", NONE, t_largecommunity}, 363 { KEYWORD, "localpref", NONE, t_localpref}, 364 { KEYWORD, "med", NONE, t_med}, 365 { KEYWORD, "metric", NONE, t_med}, 366 { KEYWORD, "nexthop", NONE, t_nexthop}, 367 { KEYWORD, "pftable", NONE, t_pftable}, 368 { KEYWORD, "prepend-neighbor", NONE, t_prepnbr}, 369 { KEYWORD, "prepend-self", NONE, t_prepself}, 370 { KEYWORD, "weight", NONE, t_weight}, 371 { KEYWORD, "add", NETWORK_BULK_ADD, NULL}, 372 { KEYWORD, "delete", NETWORK_BULK_REMOVE, NULL}, 373 { ENDTOKEN, "", NONE, NULL} 374 }; 375 376 static const struct token t_community[] = { 377 { COMMUNITY, "", NONE, t_set}, 378 { ENDTOKEN, "", NONE, NULL} 379 }; 380 381 static const struct token t_extcommunity[] = { 382 { EXTCOM_SUBTYPE, "bdc", NONE, t_ext_subtype}, 383 { EXTCOM_SUBTYPE, "defgw", NONE, t_ext_subtype}, 384 { EXTCOM_SUBTYPE, "esi-lab", NONE, t_ext_subtype}, 385 { EXTCOM_SUBTYPE, "esi-rt", NONE, t_ext_subtype}, 386 { EXTCOM_SUBTYPE, "l2vid", NONE, t_ext_subtype}, 387 { EXTCOM_SUBTYPE, "mac-mob", NONE, t_ext_subtype}, 388 { EXTCOM_SUBTYPE, "odi", NONE, t_ext_subtype}, 389 { EXTCOM_SUBTYPE, "ort", NONE, t_ext_subtype}, 390 { EXTCOM_SUBTYPE, "ori", NONE, t_ext_subtype}, 391 { EXTCOM_SUBTYPE, "ovs", NONE, t_ext_subtype}, 392 { EXTCOM_SUBTYPE, "rt", NONE, t_ext_subtype}, 393 { EXTCOM_SUBTYPE, "soo", NONE, t_ext_subtype}, 394 { EXTCOM_SUBTYPE, "srcas", NONE, t_ext_subtype}, 395 { EXTCOM_SUBTYPE, "vrfri", NONE, t_ext_subtype}, 396 { ENDTOKEN, "", NONE, NULL} 397 }; 398 399 static const struct token t_ext_subtype[] = { 400 { EXTCOMMUNITY, "", NONE, t_set}, 401 { ENDTOKEN, "", NONE, NULL} 402 }; 403 404 static const struct token t_largecommunity[] = { 405 { LARGE_COMMUNITY, "", NONE, t_set}, 406 { ENDTOKEN, "", NONE, NULL} 407 }; 408 409 static const struct token t_localpref[] = { 410 { LOCALPREF, "", NONE, t_set}, 411 { ENDTOKEN, "", NONE, NULL} 412 }; 413 414 static const struct token t_med[] = { 415 { MED, "", NONE, t_set}, 416 { ENDTOKEN, "", NONE, NULL} 417 }; 418 419 static const struct token t_nexthop[] = { 420 { NEXTHOP, "", NONE, t_set}, 421 { ENDTOKEN, "", NONE, NULL} 422 }; 423 424 static const struct token t_pftable[] = { 425 { PFTABLE, "", NONE, t_set}, 426 { ENDTOKEN, "", NONE, NULL} 427 }; 428 429 static const struct token t_prepnbr[] = { 430 { PREPNBR, "", NONE, t_set}, 431 { ENDTOKEN, "", NONE, NULL} 432 }; 433 434 static const struct token t_prepself[] = { 435 { PREPSELF, "", NONE, t_set}, 436 { ENDTOKEN, "", NONE, NULL} 437 }; 438 439 static const struct token t_weight[] = { 440 { WEIGHT, "", NONE, t_set}, 441 { ENDTOKEN, "", NONE, NULL} 442 }; 443 444 static const struct token t_irrfilter[] = { 445 { GETOPT, "", GETOPT_IRRFILTER, t_irrfilter}, 446 { ASNUM, "", NONE, t_irrfilter_opts}, 447 { ENDTOKEN, "", NONE, NULL} 448 }; 449 450 static const struct token t_irrfilter_opts[] = { 451 { NOTOKEN, "", NONE, NULL}, 452 { FLAG, "importonly", F_IMPORTONLY, t_irrfilter_opts}, 453 { ENDTOKEN, "", NONE, NULL} 454 }; 455 456 static const struct token t_log[] = { 457 { KEYWORD, "verbose", LOG_VERBOSE, NULL}, 458 { KEYWORD, "brief", LOG_BRIEF, NULL}, 459 { ENDTOKEN, "", NONE, NULL} 460 }; 461 462 static const struct token t_fib_table[] = { 463 { RTABLE, "", NONE, t_fib}, 464 { ENDTOKEN, "", NONE, NULL} 465 }; 466 467 static const struct token t_show_fib_table[] = { 468 { RTABLE, "", NONE, t_show_fib}, 469 { ENDTOKEN, "", NONE, NULL} 470 }; 471 472 static struct parse_result res; 473 474 const struct token *match_token(int *argc, char **argv[], 475 const struct token []); 476 void show_valid_args(const struct token []); 477 int parse_addr(const char *, struct bgpd_addr *); 478 int parse_asnum(const char *, size_t, u_int32_t *); 479 int parse_number(const char *, struct parse_result *, 480 enum token_type); 481 int parse_community(const char *, struct parse_result *); 482 int parsesubtype(const char *, u_int8_t *, u_int8_t *); 483 int parseextvalue(const char *, u_int32_t *); 484 u_int parseextcommunity(const char *, struct parse_result *); 485 int parse_largecommunity(const char *, 486 struct parse_result *); 487 int parse_nexthop(const char *, struct parse_result *); 488 int bgpctl_getopt(int *, char **[], int); 489 490 struct parse_result * 491 parse(int argc, char *argv[]) 492 { 493 const struct token *table = t_main; 494 const struct token *match; 495 496 bzero(&res, sizeof(res)); 497 res.rtableid = getrtable(); 498 TAILQ_INIT(&res.set); 499 if ((res.irr_outdir = getcwd(NULL, 0)) == NULL) { 500 fprintf(stderr, "getcwd failed: %s\n", strerror(errno)); 501 return (NULL); 502 } 503 504 while (argc >= 0) { 505 if ((match = match_token(&argc, &argv, table)) == NULL) { 506 fprintf(stderr, "valid commands/args:\n"); 507 show_valid_args(table); 508 return (NULL); 509 } 510 511 argc--; 512 argv++; 513 514 if (match->type == NOTOKEN || match->next == NULL) 515 break; 516 517 table = match->next; 518 } 519 520 if (argc > 0) { 521 fprintf(stderr, "superfluous argument: %s\n", argv[0]); 522 return (NULL); 523 } 524 525 return (&res); 526 } 527 528 const struct token * 529 match_token(int *argc, char **argv[], const struct token table[]) 530 { 531 u_int i, match; 532 const struct token *t = NULL; 533 struct filter_set *fs; 534 const char *word = *argv[0]; 535 size_t wordlen = 0; 536 537 match = 0; 538 if (word != NULL) 539 wordlen = strlen(word); 540 for (i = 0; table[i].type != ENDTOKEN; i++) { 541 switch (table[i].type) { 542 case NOTOKEN: 543 if (word == NULL || wordlen == 0) { 544 match++; 545 t = &table[i]; 546 } 547 break; 548 case KEYWORD: 549 if (word != NULL && strncmp(word, table[i].keyword, 550 wordlen) == 0) { 551 match++; 552 t = &table[i]; 553 if (t->value) 554 res.action = t->value; 555 } 556 break; 557 case FLAG: 558 if (word != NULL && strncmp(word, table[i].keyword, 559 wordlen) == 0) { 560 match++; 561 t = &table[i]; 562 res.flags |= t->value; 563 } 564 break; 565 case FAMILY: 566 if (word == NULL) 567 break; 568 if (!strcmp(word, "inet") || 569 !strcasecmp(word, "IPv4")) { 570 match++; 571 t = &table[i]; 572 res.aid = AID_INET; 573 } 574 if (!strcmp(word, "inet6") || 575 !strcasecmp(word, "IPv6")) { 576 match++; 577 t = &table[i]; 578 res.aid = AID_INET6; 579 } 580 if (!strcasecmp(word, "VPNv4")) { 581 match++; 582 t = &table[i]; 583 res.aid = AID_VPN_IPv4; 584 } 585 break; 586 case ADDRESS: 587 if (parse_addr(word, &res.addr)) { 588 match++; 589 t = &table[i]; 590 if (t->value) 591 res.action = t->value; 592 } 593 break; 594 case PEERADDRESS: 595 if (parse_addr(word, &res.peeraddr)) { 596 match++; 597 t = &table[i]; 598 if (t->value) 599 res.action = t->value; 600 } 601 break; 602 case PREFIX: 603 if (parse_prefix(word, wordlen, &res.addr, &res.prefixlen)) { 604 match++; 605 t = &table[i]; 606 if (t->value) 607 res.action = t->value; 608 } 609 break; 610 case ASTYPE: 611 if (word != NULL && strncmp(word, table[i].keyword, 612 wordlen) == 0) { 613 match++; 614 t = &table[i]; 615 res.as.type = t->value; 616 } 617 break; 618 case ASNUM: 619 if (parse_asnum(word, wordlen, &res.as.as_min)) { 620 res.as.as_max = res.as.as_min; 621 match++; 622 t = &table[i]; 623 } 624 break; 625 case PEERDESC: 626 if (!match && word != NULL && wordlen > 0) { 627 if (strlcpy(res.peerdesc, word, 628 sizeof(res.peerdesc)) >= 629 sizeof(res.peerdesc)) 630 errx(1, "neighbor description too " 631 "long"); 632 match++; 633 t = &table[i]; 634 } 635 break; 636 case RIBNAME: 637 if (!match && word != NULL && wordlen > 0) { 638 if (strlcpy(res.rib, word, sizeof(res.rib)) >= 639 sizeof(res.rib)) 640 errx(1, "rib name too long"); 641 match++; 642 t = &table[i]; 643 } 644 break; 645 case SHUTDOWN_COMMUNICATION: 646 if (!match && word != NULL && wordlen > 0) { 647 if (strlcpy(res.shutcomm, word, 648 sizeof(res.shutcomm)) >= 649 sizeof(res.shutcomm)) 650 errx(1, "shutdown reason too long"); 651 match++; 652 t = &table[i]; 653 } 654 break; 655 case COMMUNITY: 656 if (word != NULL && wordlen > 0 && 657 parse_community(word, &res)) { 658 match++; 659 t = &table[i]; 660 } 661 break; 662 case EXTCOM_SUBTYPE: 663 if (word != NULL && strncmp(word, table[i].keyword, 664 wordlen) == 0) { 665 if (parsesubtype(word, &res.community.c.e.type, 666 &res.community.c.e.subtype) == 0) 667 errx(1, "Bad ext-community unknown " 668 "type"); 669 match++; 670 t = &table[i]; 671 } 672 break; 673 case EXTCOMMUNITY: 674 if (word != NULL && wordlen > 0 && 675 parseextcommunity(word, &res)) { 676 match++; 677 t = &table[i]; 678 } 679 break; 680 case LARGE_COMMUNITY: 681 if (word != NULL && wordlen > 0 && 682 parse_largecommunity(word, &res)) { 683 match++; 684 t = &table[i]; 685 } 686 break; 687 case LOCALPREF: 688 case MED: 689 case PREPNBR: 690 case PREPSELF: 691 case WEIGHT: 692 case RTABLE: 693 if (word != NULL && wordlen > 0 && 694 parse_number(word, &res, table[i].type)) { 695 match++; 696 t = &table[i]; 697 } 698 break; 699 case NEXTHOP: 700 if (word != NULL && wordlen > 0 && 701 parse_nexthop(word, &res)) { 702 match++; 703 t = &table[i]; 704 } 705 break; 706 case PFTABLE: 707 if (word != NULL && wordlen > 0) { 708 if ((fs = calloc(1, 709 sizeof(struct filter_set))) == NULL) 710 err(1, NULL); 711 if (strlcpy(fs->action.pftable, word, 712 sizeof(fs->action.pftable)) >= 713 sizeof(fs->action.pftable)) 714 errx(1, "pftable name too long"); 715 TAILQ_INSERT_TAIL(&res.set, fs, entry); 716 match++; 717 t = &table[i]; 718 } 719 break; 720 case GETOPT: 721 if (bgpctl_getopt(argc, argv, table[i].value)) { 722 match++; 723 t = &table[i]; 724 } 725 break; 726 case FILENAME: 727 if (word != NULL && wordlen > 0) { 728 if ((res.mrtfd = open(word, O_RDONLY)) == -1) { 729 /* 730 * ignore error if path has no / and 731 * does not exist. In hope to print 732 * usage. 733 */ 734 if (errno == ENOENT && 735 !strchr(word, '/')) 736 break; 737 err(1, "mrt open(%s)", word); 738 } 739 match++; 740 t = &table[i]; 741 } 742 break; 743 case BULK: 744 match++; 745 t = &table[i]; 746 break; 747 case ENDTOKEN: 748 break; 749 } 750 } 751 752 if (match != 1) { 753 if (word == NULL) 754 fprintf(stderr, "missing argument:\n"); 755 else if (match > 1) 756 fprintf(stderr, "ambiguous argument: %s\n", word); 757 else if (match < 1) 758 fprintf(stderr, "unknown argument: %s\n", word); 759 return (NULL); 760 } 761 762 return (t); 763 } 764 765 void 766 show_valid_args(const struct token table[]) 767 { 768 int i; 769 770 for (i = 0; table[i].type != ENDTOKEN; i++) { 771 switch (table[i].type) { 772 case NOTOKEN: 773 fprintf(stderr, " <cr>\n"); 774 break; 775 case KEYWORD: 776 case FLAG: 777 case ASTYPE: 778 case EXTCOM_SUBTYPE: 779 fprintf(stderr, " %s\n", table[i].keyword); 780 break; 781 case ADDRESS: 782 case PEERADDRESS: 783 fprintf(stderr, " <address>\n"); 784 break; 785 case PREFIX: 786 fprintf(stderr, " <address>[/<len>]\n"); 787 break; 788 case ASNUM: 789 fprintf(stderr, " <asnum>\n"); 790 break; 791 case PEERDESC: 792 fprintf(stderr, " <neighbor description>\n"); 793 break; 794 case RIBNAME: 795 fprintf(stderr, " <rib name>\n"); 796 break; 797 case SHUTDOWN_COMMUNICATION: 798 fprintf(stderr, " <shutdown reason>\n"); 799 break; 800 case COMMUNITY: 801 fprintf(stderr, " <community>\n"); 802 break; 803 case EXTCOMMUNITY: 804 fprintf(stderr, " <extended-community>\n"); 805 break; 806 case LARGE_COMMUNITY: 807 fprintf(stderr, " <large-community>\n"); 808 break; 809 case LOCALPREF: 810 case MED: 811 case PREPNBR: 812 case PREPSELF: 813 case WEIGHT: 814 fprintf(stderr, " <number>\n"); 815 break; 816 case RTABLE: 817 fprintf(stderr, " <rtableid>\n"); 818 break; 819 case NEXTHOP: 820 fprintf(stderr, " <address>\n"); 821 break; 822 case PFTABLE: 823 fprintf(stderr, " <pftable>\n"); 824 break; 825 case FAMILY: 826 fprintf(stderr, " [ inet | inet6 | IPv4 | IPv6 | VPNv4 ]\n"); 827 break; 828 case GETOPT: 829 fprintf(stderr, " <options>\n"); 830 break; 831 case FILENAME: 832 fprintf(stderr, " <filename>\n"); 833 break; 834 case BULK: 835 case ENDTOKEN: 836 break; 837 } 838 } 839 } 840 841 int 842 parse_addr(const char *word, struct bgpd_addr *addr) 843 { 844 struct in_addr ina; 845 struct addrinfo hints, *r; 846 847 if (word == NULL) 848 return (0); 849 850 bzero(addr, sizeof(struct bgpd_addr)); 851 bzero(&ina, sizeof(ina)); 852 853 if (inet_net_pton(AF_INET, word, &ina, sizeof(ina)) != -1) { 854 addr->aid = AID_INET; 855 addr->v4 = ina; 856 return (1); 857 } 858 859 bzero(&hints, sizeof(hints)); 860 hints.ai_family = AF_INET6; 861 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 862 hints.ai_flags = AI_NUMERICHOST; 863 if (getaddrinfo(word, "0", &hints, &r) == 0) { 864 sa2addr(r->ai_addr, addr); 865 freeaddrinfo(r); 866 return (1); 867 } 868 869 return (0); 870 } 871 872 int 873 parse_prefix(const char *word, size_t wordlen, struct bgpd_addr *addr, u_int8_t *prefixlen) 874 { 875 char *p, *ps; 876 const char *errstr; 877 int mask = -1; 878 879 if (word == NULL) 880 return (0); 881 882 bzero(addr, sizeof(struct bgpd_addr)); 883 884 if ((p = strrchr(word, '/')) != NULL) { 885 size_t plen = strlen(p); 886 mask = strtonum(p + 1, 0, 128, &errstr); 887 if (errstr) 888 errx(1, "netmask %s", errstr); 889 890 if ((ps = malloc(wordlen - plen + 1)) == NULL) 891 err(1, "parse_prefix: malloc"); 892 strlcpy(ps, word, wordlen - plen + 1); 893 894 if (parse_addr(ps, addr) == 0) { 895 free(ps); 896 return (0); 897 } 898 899 free(ps); 900 } else 901 if (parse_addr(word, addr) == 0) 902 return (0); 903 904 switch (addr->aid) { 905 case AID_INET: 906 if (mask == -1) 907 mask = 32; 908 if (mask > 32) 909 errx(1, "invalid netmask: too large"); 910 addr->v4.s_addr = addr->v4.s_addr & htonl(prefixlen2mask(mask)); 911 break; 912 case AID_INET6: 913 if (mask == -1) 914 mask = 128; 915 inet6applymask(&addr->v6, &addr->v6, mask); 916 break; 917 default: 918 return (0); 919 } 920 921 *prefixlen = mask; 922 return (1); 923 } 924 925 int 926 parse_asnum(const char *word, size_t wordlen, u_int32_t *asnum) 927 { 928 const char *errstr; 929 char *dot; 930 u_int32_t uval, uvalh = 0; 931 932 if (word == NULL) 933 return (0); 934 935 if (wordlen < 1 || word[0] < '0' || word[0] > '9') 936 return (0); 937 938 if ((dot = strchr(word,'.')) != NULL) { 939 *dot++ = '\0'; 940 uvalh = strtonum(word, 0, USHRT_MAX, &errstr); 941 if (errstr) 942 errx(1, "AS number is %s: %s", errstr, word); 943 uval = strtonum(dot, 0, USHRT_MAX, &errstr); 944 if (errstr) 945 errx(1, "AS number is %s: %s", errstr, word); 946 } else { 947 uval = strtonum(word, 0, UINT_MAX, &errstr); 948 if (errstr) 949 errx(1, "AS number is %s: %s", errstr, word); 950 } 951 952 *asnum = uval | (uvalh << 16); 953 return (1); 954 } 955 956 int 957 parse_number(const char *word, struct parse_result *r, enum token_type type) 958 { 959 struct filter_set *fs; 960 const char *errstr; 961 u_int uval; 962 963 if (word == NULL) 964 return (0); 965 966 uval = strtonum(word, 0, UINT_MAX, &errstr); 967 if (errstr) 968 errx(1, "number is %s: %s", errstr, word); 969 970 /* number was parseable */ 971 if (type == RTABLE) { 972 r->rtableid = uval; 973 return (1); 974 } 975 976 if ((fs = calloc(1, sizeof(struct filter_set))) == NULL) 977 err(1, NULL); 978 switch (type) { 979 case LOCALPREF: 980 fs->type = ACTION_SET_LOCALPREF; 981 fs->action.metric = uval; 982 break; 983 case MED: 984 fs->type = ACTION_SET_MED; 985 fs->action.metric = uval; 986 break; 987 case PREPNBR: 988 if (uval > 128) { 989 free(fs); 990 return (0); 991 } 992 fs->type = ACTION_SET_PREPEND_PEER; 993 fs->action.prepend = uval; 994 break; 995 case PREPSELF: 996 if (uval > 128) { 997 free(fs); 998 return (0); 999 } 1000 fs->type = ACTION_SET_PREPEND_SELF; 1001 fs->action.prepend = uval; 1002 break; 1003 case WEIGHT: 1004 fs->type = ACTION_SET_WEIGHT; 1005 fs->action.metric = uval; 1006 break; 1007 default: 1008 errx(1, "king bula sez bad things happen"); 1009 } 1010 1011 TAILQ_INSERT_TAIL(&r->set, fs, entry); 1012 return (1); 1013 } 1014 1015 static u_int32_t 1016 getcommunity(const char *s, int large, u_int8_t *flag) 1017 { 1018 int64_t max = USHRT_MAX; 1019 const char *errstr; 1020 u_int32_t uval; 1021 1022 if (strcmp(s, "*") == 0) { 1023 *flag = COMMUNITY_ANY; 1024 return (0); 1025 } 1026 1027 if (large) 1028 max = UINT_MAX; 1029 1030 uval = strtonum(s, 0, max, &errstr); 1031 if (errstr) 1032 errx(1, "Community is %s: %s", errstr, s); 1033 1034 *flag = 0; 1035 return (uval); 1036 } 1037 1038 int 1039 parse_community(const char *word, struct parse_result *r) 1040 { 1041 struct filter_set *fs; 1042 char *p; 1043 u_int32_t as, type; 1044 u_int8_t asflag, tflag; 1045 1046 /* Well-known communities */ 1047 if (strcasecmp(word, "GRACEFUL_SHUTDOWN") == 0) { 1048 as = COMMUNITY_WELLKNOWN; 1049 type = COMMUNITY_GRACEFUL_SHUTDOWN; 1050 goto done; 1051 } else if (strcasecmp(word, "NO_EXPORT") == 0) { 1052 as = COMMUNITY_WELLKNOWN; 1053 type = COMMUNITY_NO_EXPORT; 1054 goto done; 1055 } else if (strcasecmp(word, "NO_ADVERTISE") == 0) { 1056 as = COMMUNITY_WELLKNOWN; 1057 type = COMMUNITY_NO_ADVERTISE; 1058 goto done; 1059 } else if (strcasecmp(word, "NO_EXPORT_SUBCONFED") == 0) { 1060 as = COMMUNITY_WELLKNOWN; 1061 type = COMMUNITY_NO_EXPSUBCONFED; 1062 goto done; 1063 } else if (strcasecmp(word, "NO_PEER") == 0) { 1064 as = COMMUNITY_WELLKNOWN; 1065 type = COMMUNITY_NO_PEER; 1066 goto done; 1067 } else if (strcasecmp(word, "BLACKHOLE") == 0) { 1068 as = COMMUNITY_WELLKNOWN; 1069 type = COMMUNITY_BLACKHOLE; 1070 goto done; 1071 } 1072 1073 if ((p = strchr(word, ':')) == NULL) { 1074 fprintf(stderr, "Bad community syntax\n"); 1075 return (0); 1076 } 1077 *p++ = 0; 1078 1079 as = getcommunity(word, 0, &asflag); 1080 type = getcommunity(p, 0, &tflag); 1081 1082 done: 1083 if ((fs = calloc(1, sizeof(struct filter_set))) == NULL) 1084 err(1, NULL); 1085 fs->type = ACTION_SET_COMMUNITY; 1086 fs->action.community.type = COMMUNITY_TYPE_BASIC; 1087 fs->action.community.c.b.data1 = as; 1088 fs->action.community.c.b.data2 = type; 1089 fs->action.community.dflag1 = asflag; 1090 fs->action.community.dflag2 = tflag; 1091 1092 r->community = fs->action.community; 1093 1094 TAILQ_INSERT_TAIL(&r->set, fs, entry); 1095 return (1); 1096 } 1097 1098 int 1099 parsesubtype(const char *name, u_int8_t *type, u_int8_t *subtype) 1100 { 1101 const struct ext_comm_pairs *cp; 1102 int found = 0; 1103 1104 for (cp = iana_ext_comms; cp->subname != NULL; cp++) { 1105 if (strcmp(name, cp->subname) == 0) { 1106 if (found == 0) { 1107 *type = cp->type; 1108 *subtype = cp->subtype; 1109 } 1110 found++; 1111 } 1112 } 1113 if (found > 1) 1114 *type = -1; 1115 return (found); 1116 } 1117 1118 int 1119 parseextvalue(const char *s, u_int32_t *v) 1120 { 1121 const char *errstr; 1122 char *p; 1123 struct in_addr ip; 1124 u_int32_t uvalh = 0, uval; 1125 1126 if ((p = strchr(s, '.')) == NULL) { 1127 /* AS_PLAIN number (4 or 2 byte) */ 1128 uval = strtonum(s, 0, UINT_MAX, &errstr); 1129 if (errstr) { 1130 fprintf(stderr, "Bad ext-community: %s is %s\n", s, 1131 errstr); 1132 return (-1); 1133 } 1134 *v = uval; 1135 if (uval <= USHRT_MAX) 1136 return (EXT_COMMUNITY_TRANS_TWO_AS); 1137 else 1138 return (EXT_COMMUNITY_TRANS_FOUR_AS); 1139 } else if (strchr(p + 1, '.') == NULL) { 1140 /* AS_DOT number (4-byte) */ 1141 *p++ = '\0'; 1142 uvalh = strtonum(s, 0, USHRT_MAX, &errstr); 1143 if (errstr) { 1144 fprintf(stderr, "Bad ext-community: %s is %s\n", s, 1145 errstr); 1146 return (-1); 1147 } 1148 uval = strtonum(p, 0, USHRT_MAX, &errstr); 1149 if (errstr) { 1150 fprintf(stderr, "Bad ext-community: %s is %s\n", p, 1151 errstr); 1152 return (-1); 1153 } 1154 *v = uval | (uvalh << 16); 1155 return (EXT_COMMUNITY_TRANS_FOUR_AS); 1156 } else { 1157 /* more than one dot -> IP address */ 1158 if (inet_aton(s, &ip) == 0) { 1159 fprintf(stderr, "Bad ext-community: %s not parseable\n", 1160 s); 1161 return (-1); 1162 } 1163 *v = ntohl(ip.s_addr); 1164 return (EXT_COMMUNITY_TRANS_IPV4); 1165 } 1166 return (-1); 1167 } 1168 1169 u_int 1170 parseextcommunity(const char *word, struct parse_result *r) 1171 { 1172 struct filter_set *fs; 1173 const struct ext_comm_pairs *cp; 1174 const char *errstr; 1175 u_int64_t ullval; 1176 u_int32_t uval; 1177 char *p, *ep; 1178 int type; 1179 1180 type = r->community.c.e.type; 1181 1182 switch (type) { 1183 case 0xff: 1184 if ((p = strchr(word, ':')) == NULL) { 1185 fprintf(stderr, "Bad ext-community: %s\n", word); 1186 return (0); 1187 } 1188 *p++ = '\0'; 1189 if ((type = parseextvalue(word, &uval)) == -1) 1190 return (0); 1191 switch (type) { 1192 case EXT_COMMUNITY_TRANS_TWO_AS: 1193 ullval = strtonum(p, 0, UINT_MAX, &errstr); 1194 break; 1195 case EXT_COMMUNITY_TRANS_IPV4: 1196 case EXT_COMMUNITY_TRANS_FOUR_AS: 1197 ullval = strtonum(p, 0, USHRT_MAX, &errstr); 1198 break; 1199 default: 1200 fprintf(stderr, "parseextcommunity: unexpected " 1201 "result\n"); 1202 return (0); 1203 } 1204 if (errstr) { 1205 fprintf(stderr, "Bad ext-community: %s is %s\n", p, 1206 errstr); 1207 return (0); 1208 } 1209 switch (type) { 1210 case EXT_COMMUNITY_TRANS_TWO_AS: 1211 r->community.c.e.data1 = uval; 1212 r->community.c.e.data2 = ullval; 1213 break; 1214 case EXT_COMMUNITY_TRANS_IPV4: 1215 case EXT_COMMUNITY_TRANS_FOUR_AS: 1216 r->community.c.e.data1 = uval; 1217 r->community.c.e.data2 = ullval; 1218 break; 1219 } 1220 break; 1221 case EXT_COMMUNITY_TRANS_OPAQUE: 1222 case EXT_COMMUNITY_TRANS_EVPN: 1223 errno = 0; 1224 ullval = strtoull(word, &ep, 0); 1225 if (word[0] == '\0' || *ep != '\0') { 1226 fprintf(stderr, "Bad ext-community: bad value\n"); 1227 return (0); 1228 } 1229 if (errno == ERANGE && ullval > EXT_COMMUNITY_OPAQUE_MAX) { 1230 fprintf(stderr, "Bad ext-community: too big\n"); 1231 return (0); 1232 } 1233 r->community.c.e.data2 = ullval; 1234 break; 1235 case EXT_COMMUNITY_NON_TRANS_OPAQUE: 1236 if (strcmp(word, "valid") == 0) 1237 r->community.c.e.data2 = EXT_COMMUNITY_OVS_VALID; 1238 else if (strcmp(word, "invalid") == 0) 1239 r->community.c.e.data2 = EXT_COMMUNITY_OVS_INVALID; 1240 else if (strcmp(word, "not-found") == 0) 1241 r->community.c.e.data2 = EXT_COMMUNITY_OVS_NOTFOUND; 1242 else { 1243 fprintf(stderr, "Bad ext-community value: %s\n", word); 1244 return (0); 1245 } 1246 break; 1247 } 1248 r->community.c.e.type = type; 1249 1250 /* verify type/subtype combo */ 1251 for (cp = iana_ext_comms; cp->subname != NULL; cp++) { 1252 if (cp->type == r->community.c.e.type && 1253 cp->subtype == r->community.c.e.subtype) { 1254 r->community.type = COMMUNITY_TYPE_EXT;; 1255 if ((fs = calloc(1, sizeof(struct filter_set))) == NULL) 1256 err(1, NULL); 1257 1258 fs->type = ACTION_SET_COMMUNITY; 1259 memcpy(&fs->action.community, &r->community, 1260 sizeof(struct filter_community)); 1261 1262 TAILQ_INSERT_TAIL(&r->set, fs, entry); 1263 return (1); 1264 } 1265 } 1266 1267 fprintf(stderr, "Bad ext-community: bad format for type\n"); 1268 return (0); 1269 } 1270 1271 int 1272 parse_largecommunity(const char *word, struct parse_result *r) 1273 { 1274 struct filter_set *fs; 1275 char *p, *po = strdup(word); 1276 char *array[3] = { NULL, NULL, NULL }; 1277 char *val; 1278 u_int32_t as, ld1, ld2; 1279 u_int8_t asflag, ld1flag, ld2flag; 1280 int i = 0; 1281 1282 p = po; 1283 while ((p != NULL) && (i < 3)) { 1284 val = strsep(&p, ":"); 1285 array[i++] = val; 1286 } 1287 1288 if ((p != NULL) || !(array[0] && array[1] && array[2])) 1289 errx(1, "Invalid Large-Community syntax"); 1290 1291 as = getcommunity(array[0], 1, &asflag); 1292 ld1 = getcommunity(array[1], 1, &ld1flag); 1293 ld2 = getcommunity(array[2], 1, &ld2flag); 1294 1295 free(po); 1296 1297 if ((fs = calloc(1, sizeof(struct filter_set))) == NULL) 1298 err(1, NULL); 1299 fs->type = ACTION_SET_COMMUNITY; 1300 fs->action.community.type = COMMUNITY_TYPE_LARGE; 1301 fs->action.community.c.l.data1 = as; 1302 fs->action.community.c.l.data2 = ld1; 1303 fs->action.community.c.l.data3 = ld2; 1304 fs->action.community.dflag1 = asflag; 1305 fs->action.community.dflag2 = ld1flag; 1306 fs->action.community.dflag3 = ld2flag; 1307 1308 r->community = fs->action.community; 1309 1310 TAILQ_INSERT_TAIL(&r->set, fs, entry); 1311 return (1); 1312 } 1313 1314 int 1315 parse_nexthop(const char *word, struct parse_result *r) 1316 { 1317 struct filter_set *fs; 1318 1319 if ((fs = calloc(1, sizeof(struct filter_set))) == NULL) 1320 err(1, NULL); 1321 1322 if (strcmp(word, "blackhole") == 0) 1323 fs->type = ACTION_SET_NEXTHOP_BLACKHOLE; 1324 else if (strcmp(word, "reject") == 0) 1325 fs->type = ACTION_SET_NEXTHOP_REJECT; 1326 else if (strcmp(word, "no-modify") == 0) 1327 fs->type = ACTION_SET_NEXTHOP_NOMODIFY; 1328 else if (parse_addr(word, &fs->action.nexthop)) { 1329 fs->type = ACTION_SET_NEXTHOP; 1330 } else { 1331 free(fs); 1332 return (0); 1333 } 1334 1335 TAILQ_INSERT_TAIL(&r->set, fs, entry); 1336 return (1); 1337 } 1338 1339 int 1340 bgpctl_getopt(int *argc, char **argv[], int type) 1341 { 1342 int ch; 1343 1344 optind = optreset = 1; 1345 while ((ch = getopt((*argc) + 1, (*argv) - 1, "46o:")) != -1) { 1346 switch (ch) { 1347 case '4': 1348 res.flags = (res.flags | F_IPV4) & ~F_IPV6; 1349 break; 1350 case '6': 1351 res.flags = (res.flags | F_IPV6) & ~F_IPV4; 1352 break; 1353 case 'o': 1354 res.irr_outdir = optarg; 1355 break; 1356 default: 1357 usage(); 1358 /* NOTREACHED */ 1359 } 1360 } 1361 1362 if (optind > 1) { 1363 (*argc) -= (optind - 1); 1364 (*argv) += (optind - 1); 1365 1366 /* need to move one backwards as calling code moves forward */ 1367 (*argc)++; 1368 (*argv)--; 1369 return (1); 1370 } else 1371 return (0); 1372 } 1373