1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2003 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include "defs.h" 30 #include "tables.h" 31 32 /* 33 * Parse the config file which consists of entries of the form: 34 * ifdefault [<variable> <value>]* 35 * prefixdefault [<variable> <value>]* 36 * if <ifname> [<variable> <value>]* 37 * prefix <prefix>/<length> <ifname> [<variable> <value>]* 38 * 39 * All "ifdefault" and "prefixdefault" entries must preceed any 40 * "if" and "prefix" entries. 41 * 42 * Values (such as expiry dates) which contain white space 43 * can be quoted with single or double quotes. 44 */ 45 46 /* maximum length of messages we send to syslog */ 47 #define NDPD_LOGMSGSIZE 1024 48 typedef boolean_t (*pfb_t)(char *, uint_t *); 49 50 struct configinfo { 51 char *ci_name; 52 uint_t ci_min; /* 0: no min check */ 53 uint_t ci_max; /* ~0U: no max check */ 54 uint_t ci_default; 55 uint_t ci_index; /* Into result array */ 56 pfb_t ci_parsefunc; /* Parse function returns -1 on failure */ 57 }; 58 59 enum config_type { CONFIG_IF, CONFIG_PREFIX}; 60 typedef enum config_type config_type_t; 61 62 static void set_protocol_defaults(void); 63 static void print_defaults(void); 64 static void parse_var_value(config_type_t, struct configinfo *, char *, char *, 65 struct confvar *); 66 static void parse_default(config_type_t, struct configinfo *, char **, int, 67 struct confvar *); 68 static void parse_if(struct configinfo *, char **, int); 69 static void parse_prefix(struct configinfo *, char **, int); 70 static boolean_t parse_onoff(char *, uint_t *); /* boolean */ 71 static boolean_t parse_int(char *, uint_t *); /* integer */ 72 static boolean_t parse_ms(char *, uint_t *); /* milliseconds */ 73 static boolean_t parse_s(char *, uint_t *); /* seconds */ 74 static boolean_t parse_date(char *, uint_t *); /* date format */ 75 static void conferr(char *fmt, ...); 76 static FILE *open_conffile(char *filename); 77 static int parse_line(char *line, char *argvec[], int argcount); 78 static int readline(FILE *fp, char *line, int length); 79 static int parse_addrprefix(char *strin, struct in6_addr *in6); 80 81 /* 82 * Per interface configuration variables. 83 * Min, max, and default values are from RFC 2461. 84 */ 85 static struct configinfo iflist[] = { 86 /* Name, Min, Max, Default, Index */ 87 { "DupAddrDetectTransmits", 0, 100, 1, I_DupAddrDetectTransmits, 88 parse_int }, 89 { "AdvSendAdvertisements", 0, 1, 0, I_AdvSendAdvertisements, 90 parse_onoff }, 91 { "MaxRtrAdvInterval", 4, 1800, 600, I_MaxRtrAdvInterval, parse_s }, 92 { "MinRtrAdvInterval", 3, 1350, 200, I_MinRtrAdvInterval, parse_s }, 93 /* 94 * No greater than .75 * MaxRtrAdvInterval. 95 * Default: 0.33 * MaxRtrAdvInterval 96 */ 97 { "AdvManagedFlag", 0, 1, 0, I_AdvManagedFlag, parse_onoff }, 98 { "AdvOtherConfigFlag", 0, 1, 0, I_AdvOtherConfigFlag, parse_onoff }, 99 { "AdvLinkMTU", IPV6_MIN_MTU, 65535, 0, I_AdvLinkMTU, parse_int }, 100 { "AdvReachableTime", 0, 3600000, 0, I_AdvReachableTime, parse_ms }, 101 { "AdvRetransTimer", 0, ~0U, 0, I_AdvRetransTimer, parse_ms }, 102 { "AdvCurHopLimit", 0, 255, 0, I_AdvCurHopLimit, parse_int }, 103 { "AdvDefaultLifetime", 0, 9000, 1800, I_AdvDefaultLifetime, parse_s }, 104 /* 105 * MUST be either zero or between MaxRtrAdvInterval and 9000 seconds. 106 * Default: 3 * MaxRtrAdvInterval 107 */ 108 { "StatelessAddrConf", 0, 1, 1, I_StatelessAddrConf, parse_onoff }, 109 /* 110 * Tmp* variables from RFC 3041, where defaults are defined. 111 */ 112 { "TmpAddrsEnabled", 0, 1, 0, I_TmpAddrsEnabled, parse_onoff }, 113 { "TmpValidLifetime", 0, ~0U, 604800, I_TmpValidLifetime, parse_s }, 114 { "TmpPreferredLifetime", 0, ~0U, 86400, I_TmpPreferredLifetime, 115 parse_s }, 116 { "TmpRegenAdvance", 0, 60, 5, I_TmpRegenAdvance, parse_s }, 117 { "TmpMaxDesyncFactor", 0, 600, 600, I_TmpMaxDesyncFactor, parse_s }, 118 { NULL, 0, 0, 0, 0 } 119 }; 120 121 /* 122 * Per prefix: AdvPrefixList configuration variables. 123 * Min, max, and default values are from RFC 2461. 124 */ 125 static struct configinfo prefixlist[] = { 126 /* Name, Min, Max, Default, Index */ 127 { "AdvValidLifetime", 0, ~0U, 2592000, I_AdvValidLifetime, 128 parse_s }, 129 { "AdvOnLinkFlag", 0, 1, 1, I_AdvOnLinkFlag, parse_onoff }, 130 { "AdvPreferredLifetime", 0, ~0U, 604800, I_AdvPreferredLifetime, 131 parse_s}, 132 { "AdvAutonomousFlag", 0, 1, 1, I_AdvAutonomousFlag, parse_onoff }, 133 { "AdvValidExpiration", 0, ~0U, 0, I_AdvValidExpiration, 134 parse_date }, 135 { "AdvPreferredExpiration", 0, ~0U, 0, I_AdvPreferredExpiration, 136 parse_date}, 137 { NULL, 0, 0, 0, 0 }, 138 }; 139 140 /* 141 * Data structures used to merge above protocol defaults 142 * with defaults specified in the configuration file. 143 * ifdefault is not static because new interfaces can be 144 * created outside of the configuration context. 145 */ 146 struct confvar ifdefaults[I_IFSIZE]; 147 static struct confvar prefixdefaults[I_PREFIXSIZE]; 148 149 static char conf_filename[MAXPATHLEN]; 150 static int lineno; 151 152 /* 153 * Checks for violations of section 5.5.3 (c) of RFC 2462. 154 */ 155 static void 156 check_var_consistency(struct confvar *cv, void *save, int size) 157 { 158 boolean_t rollback = _B_FALSE; 159 int prefl, prefe, valid; 160 161 prefl = cv[I_AdvPreferredLifetime].cf_value; 162 prefe = cv[I_AdvPreferredExpiration].cf_value; 163 valid = cv[I_AdvValidLifetime].cf_value; 164 165 if (prefl > valid) { 166 conferr("AdvPreferredLifetime (%u) is greater than " 167 "valid lifetime (%u)\n", prefl, valid); 168 rollback = _B_TRUE; 169 } 170 171 if (prefe > valid) { 172 conferr("AdvPreferredExpiration (%u) is greater than " 173 "valid lifetime (%u)\n", prefe, valid); 174 rollback = _B_TRUE; 175 } 176 177 if (rollback) { 178 (void) memcpy(cv, save, size); 179 } 180 } 181 182 /* 183 * Check for invalid lifetime values for RFC3041 addresses 184 */ 185 static void 186 check_if_var_consistency(struct confvar *cv, void *save, int size) 187 { 188 boolean_t rollback = _B_FALSE; 189 int tpref, tvalid, tdesync, tregen; 190 191 tpref = cv[I_TmpPreferredLifetime].cf_value; 192 tvalid = cv[I_TmpValidLifetime].cf_value; 193 tdesync = cv[I_TmpMaxDesyncFactor].cf_value; 194 tregen = cv[I_TmpRegenAdvance].cf_value; 195 196 /* 197 * Only need to do this if tmp addrs are enabled. 198 */ 199 if (cv[I_TmpAddrsEnabled].cf_value == 0) 200 return; 201 202 if (tdesync > tpref) { 203 conferr("TmpDesyncFactor (%u) is greater than " 204 "TmpPreferredLifetime (%u)\n", tdesync, tpref); 205 rollback = _B_TRUE; 206 } 207 208 if (tpref > tvalid) { 209 conferr("TmpPreferredLifetime (%u) is greater than " 210 "TmpValidLifetime (%u)\n", tpref, tvalid); 211 rollback = _B_TRUE; 212 } 213 214 if (tregen > tvalid) { 215 conferr("TmpRegenAdvance (%u) is greater than " 216 "TmpValidLifetime (%u)\n", tregen, tvalid); 217 rollback = _B_TRUE; 218 } 219 220 if (rollback) { 221 (void) memcpy(cv, save, size); 222 } 223 } 224 225 int 226 parse_config(char *config_file, boolean_t file_required) 227 { 228 FILE *fp; 229 char line[MAXLINELEN]; 230 char pline[MAXLINELEN]; 231 int argcount; 232 char *argvec[MAXARGSPERLINE]; 233 int defaultdone = 0; /* Set when first non-default command found */ 234 235 if (debug & D_CONFIG) 236 logmsg(LOG_DEBUG, "parse_config()\n"); 237 238 set_protocol_defaults(); 239 if (debug & D_DEFAULTS) 240 print_defaults(); 241 242 fp = open_conffile(config_file); 243 if (fp == NULL) { 244 if (errno == ENOENT && !file_required) 245 return (0); 246 logperror(config_file); 247 return (-1); 248 } 249 while (readline(fp, line, sizeof (line)) != 0) { 250 (void) strncpy(pline, line, sizeof (pline)); 251 pline[sizeof (pline) - 1] = '\0'; /* NULL terminate */ 252 argcount = parse_line(pline, argvec, 253 sizeof (argvec) / sizeof (argvec[0])); 254 if (debug & D_PARSE) { 255 int i; 256 257 logmsg(LOG_DEBUG, "scanned %d args\n", argcount); 258 for (i = 0; i < argcount; i++) 259 logmsg(LOG_DEBUG, "arg[%d]: %s\n", 260 i, argvec[i]); 261 } 262 if (argcount == 0) { 263 /* Empty line - or comment only line */ 264 continue; 265 } 266 if (strcmp(argvec[0], "ifdefault") == 0) { 267 char save[sizeof (ifdefaults)]; 268 269 if (defaultdone) { 270 conferr("ifdefault after non-default " 271 "command\n"); 272 continue; 273 } 274 /* 275 * Save existing values in case what we read is 276 * invalid and we need to restore previous settings. 277 */ 278 (void) memcpy(save, ifdefaults, sizeof (ifdefaults)); 279 parse_default(CONFIG_IF, iflist, argvec+1, argcount-1, 280 ifdefaults); 281 check_if_var_consistency(ifdefaults, save, 282 sizeof (save)); 283 } else if (strcmp(argvec[0], "prefixdefault") == 0) { 284 char save[sizeof (prefixdefaults)]; 285 286 if (defaultdone) { 287 conferr("prefixdefault after non-default " 288 "command\n"); 289 continue; 290 } 291 /* 292 * Save existing values in case what we read is 293 * invalid and we need to restore previous settings. 294 */ 295 (void) memcpy(save, prefixdefaults, 296 sizeof (prefixdefaults)); 297 parse_default(CONFIG_PREFIX, prefixlist, argvec+1, 298 argcount-1, prefixdefaults); 299 check_var_consistency(prefixdefaults, save, 300 sizeof (save)); 301 } else if (strcmp(argvec[0], "if") == 0) { 302 defaultdone = 1; 303 parse_if(iflist, argvec+1, argcount-1); 304 } else if (strcmp(argvec[0], "prefix") == 0) { 305 defaultdone = 1; 306 parse_prefix(prefixlist, argvec+1, argcount-1); 307 } else { 308 conferr("Unknown command: %s\n", argvec[0]); 309 } 310 } 311 (void) fclose(fp); 312 if (debug & D_DEFAULTS) 313 print_defaults(); 314 return (0); 315 } 316 317 /* 318 * Extract the defaults from the configinfo tables to initialize 319 * the ifdefaults and prefixdefaults arrays. 320 * The arrays are needed to track which defaults have been changed 321 * by the config file. 322 */ 323 static void 324 set_protocol_defaults(void) 325 { 326 struct configinfo *cip; 327 328 if (debug & D_DEFAULTS) 329 logmsg(LOG_DEBUG, "extract_protocol_defaults\n"); 330 for (cip = iflist; cip->ci_name != NULL; cip++) { 331 ifdefaults[cip->ci_index].cf_value = cip->ci_default; 332 ifdefaults[cip->ci_index].cf_notdefault = _B_FALSE; 333 } 334 for (cip = prefixlist; cip->ci_name != NULL; cip++) { 335 prefixdefaults[cip->ci_index].cf_value = cip->ci_default; 336 prefixdefaults[cip->ci_index].cf_notdefault = _B_FALSE; 337 } 338 } 339 340 void 341 print_iflist(struct confvar *confvar) 342 { 343 struct configinfo *cip; 344 345 for (cip = iflist; cip->ci_name != NULL; cip++) { 346 logmsg(LOG_DEBUG, "\t%s min %u max %u def %u value %u set %d\n", 347 cip->ci_name, cip->ci_min, cip->ci_max, cip->ci_default, 348 confvar[cip->ci_index].cf_value, 349 confvar[cip->ci_index].cf_notdefault); 350 } 351 } 352 353 void 354 print_prefixlist(struct confvar *confvar) 355 { 356 struct configinfo *cip; 357 358 for (cip = prefixlist; cip->ci_name != NULL; cip++) { 359 logmsg(LOG_DEBUG, "\t%s min %u max %u def %u value %u set %d\n", 360 cip->ci_name, cip->ci_min, cip->ci_max, cip->ci_default, 361 confvar[cip->ci_index].cf_value, 362 confvar[cip->ci_index].cf_notdefault); 363 } 364 } 365 366 367 static void 368 print_defaults(void) 369 { 370 logmsg(LOG_DEBUG, "Default interface variables:\n"); 371 print_iflist(ifdefaults); 372 logmsg(LOG_DEBUG, "Default prefix variables:\n"); 373 print_prefixlist(prefixdefaults); 374 } 375 376 /* 377 * Read from fp. Handle \ at the end of the line by joining lines together. 378 * Return 0 on EOF. 379 */ 380 static int 381 readline(FILE *fp, char *line, int length) 382 { 383 int got = 0; 384 385 retry: 386 errno = 0; 387 if (fgets(line, length, fp) == NULL) { 388 if (errno == EINTR) 389 goto retry; 390 if (got != 0) 391 return (1); 392 else 393 return (0); 394 } 395 lineno++; 396 got = strlen(line); 397 /* Look for trailing \. Note that fgets includes the linefeed. */ 398 if (got >= 2 && line[got-2] == '\\') { 399 /* Skip \ and LF */ 400 line += got - 2; 401 length -= got - 2; 402 goto retry; 403 } 404 /* Remove the trailing linefeed */ 405 if (got > 0) 406 line[got-1] = '\0'; 407 408 return (1); 409 } 410 411 /* 412 * Parse a line splitting it off at whitspace characters. 413 * Modifies the content of the string by inserting NULLs. 414 * If more arguments than fits in argvec/argcount then ignore the last. 415 * Returns argcount. 416 * Handles single quotes and double quotes. 417 */ 418 static int 419 parse_line(char *line, char *argvec[], int argcount) 420 { 421 int i = 0; 422 char *cp; 423 boolean_t insingle_quote = _B_FALSE; 424 boolean_t indouble_quote = _B_FALSE; 425 426 /* Truncate at the beginning of a comment */ 427 cp = strchr(line, '#'); 428 if (cp != NULL) 429 *cp = '\0'; 430 431 for (;;) { 432 /* Skip any whitespace */ 433 while (isspace(*line) && *line != '\0') 434 line++; 435 436 if (*line == '\'') { 437 line++; 438 if (*line == '\0') 439 return (i); 440 insingle_quote = _B_TRUE; 441 } else if (*line == '"') { 442 line++; 443 if (*line == '\0') 444 return (i); 445 indouble_quote = _B_TRUE; 446 } 447 argvec[i] = line; 448 if (*line == '\0') 449 return (i); 450 i++; 451 /* Skip until next whitespace or end of quoted text */ 452 if (insingle_quote) { 453 while (*line != '\'' && *line != '\0') 454 line++; 455 if (*line == '\'') { 456 *line = ' '; 457 } else { 458 /* Handle missing quote at end */ 459 i--; 460 conferr("Missing end quote - ignoring <%s>\n", 461 argvec[i]); 462 return (i); 463 } 464 insingle_quote = _B_FALSE; 465 } else if (indouble_quote) { 466 while (*line != '"' && *line != '\0') 467 line++; 468 if (*line == '"') { 469 *line = ' '; 470 } else { 471 /* Handle missing quote at end */ 472 i--; 473 conferr("Missing end quote - ignoring <%s>\n", 474 argvec[i]); 475 return (i); 476 } 477 indouble_quote = _B_FALSE; 478 } else { 479 while (!isspace(*line) && *line != '\0') 480 line++; 481 } 482 if (*line != '\0') { 483 /* Break off argument */ 484 *line++ = '\0'; 485 } 486 if (i > argcount) 487 return (argcount); 488 } 489 /* NOTREACHED */ 490 } 491 492 static void 493 parse_var_value(config_type_t type, struct configinfo *list, char *varstr, 494 char *valstr, struct confvar *confvar) 495 { 496 struct configinfo *cip; 497 uint_t val; 498 499 if (debug & D_CONFIG) { 500 logmsg(LOG_DEBUG, "parse_var_value(%d, %s, %s)\n", 501 (int)type, varstr, valstr); 502 } 503 504 for (cip = list; cip->ci_name != NULL; cip++) { 505 if (strcasecmp(cip->ci_name, varstr) == 0) 506 break; 507 } 508 if (cip->ci_name == NULL) { 509 conferr("Unknown variable: <%s>\n", varstr); 510 return; 511 } 512 if (!(*cip->ci_parsefunc)(valstr, &val)) { 513 conferr("Bad value: <%s>\n", valstr); 514 return; 515 } 516 if (cip->ci_min != 0 && val < cip->ci_min) { 517 conferr("Value %s is below minimum %u for %s\n", 518 valstr, cip->ci_min, varstr); 519 return; 520 } 521 if (cip->ci_max != ~0U && val > cip->ci_max) { 522 conferr("Value %s is above maximum %u for %s\n", 523 valstr, cip->ci_max, varstr); 524 return; 525 } 526 /* Check against dynamic/relative limits */ 527 if (type == CONFIG_IF) { 528 if (cip->ci_index == I_MinRtrAdvInterval && 529 confvar[I_MaxRtrAdvInterval].cf_notdefault && 530 val > confvar[I_MaxRtrAdvInterval].cf_value * 0.75) { 531 conferr("MinRtrAdvInterval exceeds .75 * " 532 "MaxRtrAdvInterval (%u)\n", 533 confvar[I_MaxRtrAdvInterval].cf_value); 534 return; 535 } 536 if (cip->ci_index == I_MaxRtrAdvInterval && 537 confvar[I_MinRtrAdvInterval].cf_notdefault && 538 confvar[I_MinRtrAdvInterval].cf_value > val * 0.75) { 539 conferr("MinRtrAdvInterval (%u) exceeds .75 * " 540 "MaxRtrAdvInterval\n", 541 confvar[I_MinRtrAdvInterval].cf_value); 542 return; 543 } 544 if (cip->ci_index == I_AdvDefaultLifetime && 545 confvar[I_MaxRtrAdvInterval].cf_notdefault && 546 val != 0 && 547 val < confvar[I_MaxRtrAdvInterval].cf_value) { 548 conferr("AdvDefaultLifetime is not between " 549 "MaxRtrAdrInterval (%u) and 9000 seconds\n", 550 confvar[I_MaxRtrAdvInterval].cf_value); 551 return; 552 } 553 if (cip->ci_index == I_MaxRtrAdvInterval && 554 confvar[I_AdvDefaultLifetime].cf_notdefault && 555 confvar[I_AdvDefaultLifetime].cf_value < val) { 556 conferr("AdvDefaultLifetime (%u) is not between " 557 "MaxRtrAdrInterval and 9000 seconds\n", 558 confvar[I_AdvDefaultLifetime].cf_value); 559 return; 560 } 561 } 562 confvar[cip->ci_index].cf_value = val; 563 confvar[cip->ci_index].cf_notdefault = _B_TRUE; 564 565 /* Derive dynamic/relative variables based on this one */ 566 if (type == CONFIG_IF) { 567 if (cip->ci_index == I_MaxRtrAdvInterval && 568 !confvar[I_MinRtrAdvInterval].cf_notdefault) 569 confvar[I_MinRtrAdvInterval].cf_value = val / 3; 570 if (cip->ci_index == I_MaxRtrAdvInterval && 571 !confvar[I_AdvDefaultLifetime].cf_notdefault) 572 confvar[I_AdvDefaultLifetime].cf_value = 3 * val; 573 } 574 } 575 576 /* 577 * Split up the line into <variable> <value> pairs 578 */ 579 static void 580 parse_default(config_type_t type, struct configinfo *list, 581 char *argvec[], int argcount, struct confvar *defaults) 582 { 583 if (debug & D_CONFIG) 584 logmsg(LOG_DEBUG, "parse_default: argc %d\n", argcount); 585 while (argcount >= 2) { 586 parse_var_value(type, list, argvec[0], argvec[1], defaults); 587 588 argcount -= 2; 589 argvec += 2; 590 } 591 if (argcount != 0) 592 conferr("Trailing text <%s> ignored\n", argvec[0]); 593 } 594 595 /* 596 * Returns true if ok; otherwise false. 597 */ 598 static void 599 parse_if(struct configinfo *list, char *argvec[], int argcount) 600 { 601 char *ifname; 602 struct phyint *pi; 603 char save[sizeof (pi->pi_config)]; 604 605 if (debug & D_CONFIG) 606 logmsg(LOG_DEBUG, "parse_if: argc %d\n", argcount); 607 608 if (argcount < 1) { 609 conferr("Missing interface name\n"); 610 return; 611 } 612 ifname = argvec[0]; 613 argvec++; 614 argcount--; 615 616 pi = phyint_lookup(ifname); 617 if (pi == NULL) { 618 /* 619 * Create the physical interface structure. 620 * Note, phyint_create() sets the interface 621 * defaults in pi_config. 622 */ 623 pi = phyint_create(ifname); 624 if (pi == NULL) { 625 conferr("Unable to use interface %s\n", ifname); 626 return; 627 } 628 } 629 630 (void) memcpy(save, pi->pi_config, sizeof (save)); 631 while (argcount >= 2) { 632 parse_var_value(CONFIG_IF, list, argvec[0], argvec[1], 633 pi->pi_config); 634 635 argcount -= 2; 636 argvec += 2; 637 } 638 if (argcount != 0) 639 logmsg(LOG_ERR, "Trailing text <%s> ignored\n", argvec[0]); 640 check_if_var_consistency(pi->pi_config, save, sizeof (save)); 641 } 642 643 static void 644 parse_prefix(struct configinfo *list, char *argvec[], int argcount) 645 { 646 char *ifname, *prefix; 647 struct phyint *pi; 648 struct adv_prefix *adv_pr; 649 struct in6_addr in6; 650 int prefixlen; 651 char save[sizeof (adv_pr->adv_pr_config)]; 652 653 if (debug & D_CONFIG) 654 logmsg(LOG_DEBUG, "parse_prefix: argc %d\n", argcount); 655 656 if (argcount < 2) { 657 conferr("Missing prefix and/or interface name\n"); 658 return; 659 } 660 prefix = argvec[0]; 661 ifname = argvec[1]; 662 argvec += 2; 663 argcount -= 2; 664 665 prefixlen = parse_addrprefix(prefix, &in6); 666 if (prefixlen == -1) { 667 conferr("Bad prefix %s\n", prefix); 668 return; 669 } 670 671 pi = phyint_lookup(ifname); 672 if (pi == NULL) { 673 /* 674 * Create the physical interface structure. 675 * Note, phyint_create() sets the interface 676 * defaults in pi_config. 677 */ 678 pi = phyint_create(ifname); 679 if (pi == NULL) { 680 conferr("Unable to use interface %s\n", ifname); 681 return; 682 } 683 } 684 adv_pr = adv_prefix_lookup(pi, in6, prefixlen); 685 if (adv_pr == NULL) { 686 int i; 687 688 adv_pr = adv_prefix_create(pi, in6, prefixlen); 689 if (adv_pr == NULL) { 690 conferr("Unable to create prefix %s\n", prefix); 691 return; 692 } 693 /* 694 * Copy the defaults from the default array. 695 */ 696 for (i = 0; i < I_PREFIXSIZE; i++) { 697 adv_pr->adv_pr_config[i].cf_value = 698 prefixdefaults[i].cf_value; 699 adv_pr->adv_pr_config[i].cf_notdefault = 700 prefixdefaults[i].cf_notdefault; 701 } 702 } 703 704 (void) memcpy(save, adv_pr->adv_pr_config, sizeof (save)); 705 while (argcount >= 2) { 706 parse_var_value(CONFIG_PREFIX, list, argvec[0], argvec[1], 707 adv_pr->adv_pr_config); 708 709 argcount -= 2; 710 argvec += 2; 711 } 712 check_var_consistency(adv_pr->adv_pr_config, save, sizeof (save)); 713 if (argcount != 0) 714 logmsg(LOG_ERR, "Trailing text <%s> ignored\n", argvec[0]); 715 } 716 717 /* 718 * Returns true if ok (and *resp updated) and false if failed. 719 */ 720 static boolean_t 721 parse_onoff(char *str, uint_t *resp) 722 { 723 if (strcasecmp(str, "on") == 0) { 724 *resp = 1; 725 return (_B_TRUE); 726 } 727 if (strcasecmp(str, "off") == 0) { 728 *resp = 0; 729 return (_B_TRUE); 730 } 731 if (strcasecmp(str, "true") == 0) { 732 *resp = 1; 733 return (_B_TRUE); 734 } 735 if (strcasecmp(str, "false") == 0) { 736 *resp = 0; 737 return (_B_TRUE); 738 } 739 if (parse_int(str, resp)) { 740 if (*resp == 0 || *resp == 1) 741 return (_B_TRUE); 742 } 743 return (_B_FALSE); 744 } 745 746 /* 747 * Returns true if ok (and *resp updated) and false if failed. 748 */ 749 static boolean_t 750 parse_int(char *str, uint_t *resp) 751 { 752 char *end; 753 int res; 754 755 res = strtoul(str, &end, 0); 756 if (end == str) 757 return (_B_FALSE); 758 *resp = res; 759 return (_B_TRUE); 760 } 761 762 /* 763 * Parse something with a unit of millseconds. 764 * Regognizes the suffixes "ms", "s", "m", "h", and "d". 765 * 766 * Returns true if ok (and *resp updated) and false if failed. 767 */ 768 static boolean_t 769 parse_ms(char *str, uint_t *resp) 770 { 771 /* Look at the last and next to last character */ 772 char *cp, *last, *nlast; 773 char str2[BUFSIZ]; /* For local modification */ 774 int multiplier = 1; 775 776 (void) strncpy(str2, str, sizeof (str2)); 777 str2[sizeof (str2) - 1] = '\0'; 778 779 last = str2; 780 nlast = NULL; 781 for (cp = str2; *cp != '\0'; cp++) { 782 nlast = last; 783 last = cp; 784 } 785 if (debug & D_PARSE) { 786 logmsg(LOG_DEBUG, "parse_ms: last <%c> nlast <%c>\n", 787 (last != NULL ? *last : ' '), 788 (nlast != NULL ? *nlast : ' ')); 789 } 790 switch (*last) { 791 case 'd': 792 multiplier *= 24; 793 /* FALLTHRU */ 794 case 'h': 795 multiplier *= 60; 796 /* FALLTHRU */ 797 case 'm': 798 multiplier *= 60; 799 *last = '\0'; 800 multiplier *= 1000; /* Convert to milliseconds */ 801 break; 802 case 's': 803 /* Could be "ms" or "s" */ 804 if (nlast != NULL && *nlast == 'm') { 805 /* "ms" */ 806 *nlast = '\0'; 807 } else { 808 *last = '\0'; 809 multiplier *= 1000; /* Convert to milliseconds */ 810 } 811 break; 812 } 813 814 if (!parse_int(str2, resp)) 815 return (_B_FALSE); 816 817 *resp *= multiplier; 818 return (_B_TRUE); 819 } 820 821 /* 822 * Parse something with a unit of seconds. 823 * Regognizes the suffixes "s", "m", "h", and "d". 824 * 825 * Returns true if ok (and *resp updated) and false if failed. 826 */ 827 static boolean_t 828 parse_s(char *str, uint_t *resp) 829 { 830 /* Look at the last character */ 831 char *cp, *last; 832 char str2[BUFSIZ]; /* For local modification */ 833 int multiplier = 1; 834 835 (void) strncpy(str2, str, sizeof (str2)); 836 str2[sizeof (str2) - 1] = '\0'; 837 838 last = str2; 839 for (cp = str2; *cp != '\0'; cp++) { 840 last = cp; 841 } 842 if (debug & D_PARSE) { 843 logmsg(LOG_DEBUG, "parse_s: last <%c>\n", 844 (last != NULL ? *last : ' ')); 845 } 846 switch (*last) { 847 case 'd': 848 multiplier *= 24; 849 /* FALLTHRU */ 850 case 'h': 851 multiplier *= 60; 852 /* FALLTHRU */ 853 case 'm': 854 multiplier *= 60; 855 /* FALLTHRU */ 856 case 's': 857 *last = '\0'; 858 break; 859 } 860 if (!parse_int(str2, resp)) 861 return (_B_FALSE); 862 863 *resp *= multiplier; 864 return (_B_TRUE); 865 } 866 867 /* 868 * Return prefixlen (0 to 128) if ok; -1 if failed. 869 */ 870 static int 871 parse_addrprefix(char *strin, struct in6_addr *in6) 872 { 873 char str[BUFSIZ]; /* Local copy for modification */ 874 int prefixlen; 875 char *cp; 876 char *end; 877 878 (void) strncpy(str, strin, sizeof (str)); 879 str[sizeof (str) - 1] = '\0'; 880 881 cp = strchr(str, '/'); 882 if (cp == NULL) 883 return (-1); 884 *cp = '\0'; 885 cp++; 886 887 prefixlen = strtol(cp, &end, 10); 888 if (cp == end) 889 return (-1); 890 891 if (prefixlen < 0 || prefixlen > IPV6_ABITS) 892 return (-1); 893 894 if (inet_pton(AF_INET6, str, in6) != 1) 895 return (-1); 896 897 return (prefixlen); 898 } 899 900 /* 901 * Parse an absolute date using a datemsk config file. 902 * Return the difference (measured in seconds) between that date/time and 903 * the current date/time. 904 * If the date has passed return zero. 905 * 906 * Returns true if ok (and *resp updated) and false if failed. 907 * XXX Due to getdate limitations can not exceed year 2038. 908 */ 909 static boolean_t 910 parse_date(char *str, uint_t *resp) 911 { 912 struct tm *tm; 913 struct timeval tvs; 914 time_t time, ntime; 915 916 if (getenv("DATEMSK") == NULL) { 917 (void) putenv("DATEMSK=/etc/inet/datemsk.ndpd"); 918 } 919 920 if (gettimeofday(&tvs, NULL) < 0) { 921 logperror("gettimeofday"); 922 return (_B_FALSE); 923 } 924 time = tvs.tv_sec; 925 tm = getdate(str); 926 if (tm == NULL) { 927 logmsg(LOG_ERR, "Bad date <%s> (error %d)\n", 928 str, getdate_err); 929 return (_B_FALSE); 930 } 931 932 ntime = mktime(tm); 933 934 if (debug & D_PARSE) { 935 char buf[BUFSIZ]; 936 937 (void) strftime(buf, sizeof (buf), "%Y-%m-%d %R %Z", tm); 938 logmsg(LOG_DEBUG, "parse_date: <%s>, delta %ld seconds\n", 939 buf, ntime - time); 940 } 941 if (ntime < time) { 942 conferr("Date in the past <%s>\n", str); 943 *resp = 0; 944 return (_B_TRUE); 945 } 946 *resp = (ntime - time); 947 return (_B_TRUE); 948 } 949 950 /* PRINTFLIKE1 */ 951 static void 952 conferr(char *fmt, ...) 953 { 954 char msg[NDPD_LOGMSGSIZE]; 955 size_t slen; 956 957 va_list ap; 958 va_start(ap, fmt); 959 960 (void) snprintf(msg, NDPD_LOGMSGSIZE, "%s line %d: ", 961 conf_filename, lineno); 962 slen = strlen(msg); 963 (void) vsnprintf(msg + slen, NDPD_LOGMSGSIZE - slen, fmt, ap); 964 965 logmsg(LOG_ERR, "%s", msg); 966 967 va_end(ap); 968 } 969 970 static FILE * 971 open_conffile(char *filename) 972 { 973 if (strlcpy(conf_filename, filename, MAXPATHLEN) >= MAXPATHLEN) { 974 logmsg(LOG_ERR, "config file pathname is too long\n"); 975 return (NULL); 976 } 977 978 lineno = 0; 979 980 return (fopen(filename, "r")); 981 982 } 983