1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2014-2025 Baptiste Daroussin <bapt@FreeBSD.org> 5 * Copyright (c) 2013 Bryan Drewery <bdrewery@FreeBSD.org> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/param.h> 30 #include <sys/queue.h> 31 #include <sys/utsname.h> 32 #include <sys/sysctl.h> 33 34 #include <dirent.h> 35 #include <ucl.h> 36 #include <err.h> 37 #include <errno.h> 38 #include <libutil.h> 39 #include <paths.h> 40 #include <stdbool.h> 41 #include <unistd.h> 42 #include <ctype.h> 43 44 #include "config.h" 45 46 struct config_value { 47 char *value; 48 STAILQ_ENTRY(config_value) next; 49 }; 50 51 struct config_entry { 52 uint8_t type; 53 const char *key; 54 const char *val; 55 char *value; 56 STAILQ_HEAD(, config_value) *list; 57 bool envset; 58 bool main_only; /* Only set in pkg.conf. */ 59 }; 60 61 static struct repositories repositories = STAILQ_HEAD_INITIALIZER(repositories); 62 63 static struct config_entry c[] = { 64 [PACKAGESITE] = { 65 PKG_CONFIG_STRING, 66 "PACKAGESITE", 67 URL_SCHEME_PREFIX "http://pkg.FreeBSD.org/${ABI}/latest", 68 NULL, 69 NULL, 70 false, 71 false, 72 }, 73 [ABI] = { 74 PKG_CONFIG_STRING, 75 "ABI", 76 NULL, 77 NULL, 78 NULL, 79 false, 80 true, 81 }, 82 [MIRROR_TYPE] = { 83 PKG_CONFIG_STRING, 84 "MIRROR_TYPE", 85 "SRV", 86 NULL, 87 NULL, 88 false, 89 false, 90 }, 91 [ASSUME_ALWAYS_YES] = { 92 PKG_CONFIG_BOOL, 93 "ASSUME_ALWAYS_YES", 94 "NO", 95 NULL, 96 NULL, 97 false, 98 true, 99 }, 100 [SIGNATURE_TYPE] = { 101 PKG_CONFIG_STRING, 102 "SIGNATURE_TYPE", 103 NULL, 104 NULL, 105 NULL, 106 false, 107 false, 108 }, 109 [FINGERPRINTS] = { 110 PKG_CONFIG_STRING, 111 "FINGERPRINTS", 112 NULL, 113 NULL, 114 NULL, 115 false, 116 false, 117 }, 118 [REPOS_DIR] = { 119 PKG_CONFIG_LIST, 120 "REPOS_DIR", 121 NULL, 122 NULL, 123 NULL, 124 false, 125 true, 126 }, 127 [PUBKEY] = { 128 PKG_CONFIG_STRING, 129 "PUBKEY", 130 NULL, 131 NULL, 132 NULL, 133 false, 134 false 135 }, 136 [PKG_ENV] = { 137 PKG_CONFIG_OBJECT, 138 "PKG_ENV", 139 NULL, 140 NULL, 141 NULL, 142 false, 143 false, 144 } 145 }; 146 147 static char * 148 pkg_get_myabi(void) 149 { 150 struct utsname uts; 151 char machine_arch[255]; 152 char *abi; 153 size_t len; 154 int error; 155 156 error = uname(&uts); 157 if (error) 158 return (NULL); 159 160 len = sizeof(machine_arch); 161 error = sysctlbyname("hw.machine_arch", machine_arch, &len, NULL, 0); 162 if (error) 163 return (NULL); 164 machine_arch[len] = '\0'; 165 166 /* 167 * Use __FreeBSD_version rather than kernel version (uts.release) for 168 * use in jails. This is equivalent to the value of uname -U. 169 */ 170 error = asprintf(&abi, "%s:%d:%s", uts.sysname, __FreeBSD_version/100000, 171 machine_arch); 172 if (error < 0) 173 return (NULL); 174 175 return (abi); 176 } 177 178 static void 179 subst_packagesite(const char *abi) 180 { 181 char *newval; 182 const char *variable_string; 183 const char *oldval; 184 185 if (c[PACKAGESITE].value != NULL) 186 oldval = c[PACKAGESITE].value; 187 else 188 oldval = c[PACKAGESITE].val; 189 190 if ((variable_string = strstr(oldval, "${ABI}")) == NULL) 191 return; 192 193 asprintf(&newval, "%.*s%s%s", 194 (int)(variable_string - oldval), oldval, abi, 195 variable_string + strlen("${ABI}")); 196 if (newval == NULL) 197 errx(EXIT_FAILURE, "asprintf"); 198 199 free(c[PACKAGESITE].value); 200 c[PACKAGESITE].value = newval; 201 } 202 203 static int 204 boolstr_to_bool(const char *str) 205 { 206 if (str != NULL && (strcasecmp(str, "true") == 0 || 207 strcasecmp(str, "yes") == 0 || strcasecmp(str, "on") == 0 || 208 str[0] == '1')) 209 return (true); 210 211 return (false); 212 } 213 214 static void 215 config_parse(const ucl_object_t *obj) 216 { 217 FILE *buffp; 218 char *buf = NULL; 219 size_t bufsz = 0; 220 const ucl_object_t *cur, *seq, *tmp; 221 ucl_object_iter_t it = NULL, itseq = NULL, it_obj = NULL; 222 struct config_entry *temp_config; 223 struct config_value *cv; 224 const char *key, *evkey; 225 int i; 226 size_t j; 227 228 /* Temporary config for configs that may be disabled. */ 229 temp_config = calloc(CONFIG_SIZE, sizeof(struct config_entry)); 230 buffp = open_memstream(&buf, &bufsz); 231 if (buffp == NULL) 232 err(EXIT_FAILURE, "open_memstream()"); 233 234 while ((cur = ucl_iterate_object(obj, &it, true))) { 235 key = ucl_object_key(cur); 236 if (key == NULL) 237 continue; 238 if (buf != NULL) 239 memset(buf, 0, bufsz); 240 rewind(buffp); 241 242 for (j = 0; j < strlen(key); ++j) 243 fputc(toupper(key[j]), buffp); 244 fflush(buffp); 245 246 for (i = 0; i < CONFIG_SIZE; i++) { 247 if (strcmp(buf, c[i].key) == 0) 248 break; 249 } 250 251 /* Silently skip unknown keys to be future compatible. */ 252 if (i == CONFIG_SIZE) 253 continue; 254 255 /* env has priority over config file */ 256 if (c[i].envset) 257 continue; 258 259 /* Parse sequence value ["item1", "item2"] */ 260 switch (c[i].type) { 261 case PKG_CONFIG_LIST: 262 if (cur->type != UCL_ARRAY) { 263 warnx("Skipping invalid array " 264 "value for %s.\n", c[i].key); 265 continue; 266 } 267 temp_config[i].list = 268 malloc(sizeof(*temp_config[i].list)); 269 STAILQ_INIT(temp_config[i].list); 270 271 while ((seq = ucl_iterate_object(cur, &itseq, true))) { 272 if (seq->type != UCL_STRING) 273 continue; 274 cv = malloc(sizeof(struct config_value)); 275 cv->value = 276 strdup(ucl_object_tostring(seq)); 277 STAILQ_INSERT_TAIL(temp_config[i].list, cv, 278 next); 279 } 280 break; 281 case PKG_CONFIG_BOOL: 282 temp_config[i].value = 283 strdup(ucl_object_toboolean(cur) ? "yes" : "no"); 284 break; 285 case PKG_CONFIG_OBJECT: 286 if (strcmp(c[i].key, "PKG_ENV") == 0) { 287 while ((tmp = 288 ucl_iterate_object(cur, &it_obj, true))) { 289 evkey = ucl_object_key(tmp); 290 if (evkey != NULL && *evkey != '\0') { 291 setenv(evkey, ucl_object_tostring_forced(tmp), 1); 292 } 293 } 294 } 295 break; 296 default: 297 /* Normal string value. */ 298 temp_config[i].value = strdup(ucl_object_tostring(cur)); 299 break; 300 } 301 } 302 303 /* Repo is enabled, copy over all settings from temp_config. */ 304 for (i = 0; i < CONFIG_SIZE; i++) { 305 if (c[i].envset) 306 continue; 307 /* Prevent overriding ABI, ASSUME_ALWAYS_YES, etc. */ 308 if (c[i].main_only == true) 309 continue; 310 switch (c[i].type) { 311 case PKG_CONFIG_LIST: 312 c[i].list = temp_config[i].list; 313 break; 314 default: 315 c[i].value = temp_config[i].value; 316 break; 317 } 318 } 319 320 free(temp_config); 321 fclose(buffp); 322 free(buf); 323 } 324 325 326 static void 327 parse_mirror_type(struct repository *r, const char *mt) 328 { 329 if (strcasecmp(mt, "srv") == 0) 330 r->mirror_type = MIRROR_SRV; 331 r->mirror_type = MIRROR_NONE; 332 } 333 334 static void 335 repo_free(struct repository *r) 336 { 337 free(r->name); 338 free(r->url); 339 free(r->fingerprints); 340 free(r->pubkey); 341 free(r); 342 } 343 344 static bool 345 parse_signature_type(struct repository *repo, const char *st) 346 { 347 if (strcasecmp(st, "FINGERPRINTS") == 0) 348 repo->signature_type = SIGNATURE_FINGERPRINT; 349 else if (strcasecmp(st, "PUBKEY") == 0) 350 repo->signature_type = SIGNATURE_PUBKEY; 351 else if (strcasecmp(st, "NONE") == 0) 352 repo->signature_type = SIGNATURE_NONE; 353 else { 354 warnx("Signature type %s is not supported for bootstrapping," 355 " ignoring repository %s", st, repo->name); 356 return (false); 357 } 358 return (true); 359 } 360 361 static struct repository * 362 find_repository(const char *name) 363 { 364 struct repository *repo; 365 STAILQ_FOREACH(repo, &repositories, next) { 366 if (strcmp(repo->name, name) == 0) 367 return (repo); 368 } 369 return (NULL); 370 } 371 372 static void 373 parse_repo(const ucl_object_t *o) 374 { 375 const ucl_object_t *cur; 376 const char *key, *reponame; 377 ucl_object_iter_t it = NULL; 378 bool newrepo = false; 379 struct repository *repo; 380 381 reponame = ucl_object_key(o); 382 repo = find_repository(reponame); 383 if (repo == NULL) { 384 repo = calloc(1, sizeof(struct repository)); 385 if (repo == NULL) 386 err(EXIT_FAILURE, "calloc"); 387 388 repo->name = strdup(reponame); 389 if (repo->name == NULL) 390 err(EXIT_FAILURE, "strdup"); 391 newrepo = true; 392 } 393 while ((cur = ucl_iterate_object(o, &it, true))) { 394 key = ucl_object_key(cur); 395 if (key == NULL) 396 continue; 397 if (strcasecmp(key, "url") == 0) { 398 free(repo->url); 399 repo->url = strdup(ucl_object_tostring(cur)); 400 if (repo->url == NULL) 401 err(EXIT_FAILURE, "strdup"); 402 } else if (strcasecmp(key, "mirror_type") == 0) { 403 parse_mirror_type(repo, ucl_object_tostring(cur)); 404 } else if (strcasecmp(key, "signature_type") == 0) { 405 if (!parse_signature_type(repo, ucl_object_tostring(cur))) { 406 if (newrepo) 407 repo_free(repo); 408 else 409 STAILQ_REMOVE(&repositories, repo, repository, next); 410 return; 411 } 412 } else if (strcasecmp(key, "fingerprints") == 0) { 413 free(repo->fingerprints); 414 repo->fingerprints = strdup(ucl_object_tostring(cur)); 415 if (repo->fingerprints == NULL) 416 err(EXIT_FAILURE, "strdup"); 417 } else if (strcasecmp(key, "pubkey") == 0) { 418 free(repo->pubkey); 419 repo->pubkey = strdup(ucl_object_tostring(cur)); 420 if (repo->pubkey == NULL) 421 err(EXIT_FAILURE, "strdup"); 422 } else if (strcasecmp(key, "enabled") == 0) { 423 if ((cur->type != UCL_BOOLEAN) || 424 !ucl_object_toboolean(cur)) { 425 if (newrepo) 426 repo_free(repo); 427 else 428 STAILQ_REMOVE(&repositories, repo, repository, next); 429 return; 430 } 431 } 432 } 433 /* At least we need an url */ 434 if (repo->url == NULL) { 435 repo_free(repo); 436 return; 437 } 438 if (newrepo) 439 STAILQ_INSERT_TAIL(&repositories, repo, next); 440 return; 441 } 442 443 /*- 444 * Parse new repo style configs in style: 445 * Name: 446 * URL: 447 * MIRROR_TYPE: 448 * etc... 449 */ 450 static void 451 parse_repo_file(ucl_object_t *obj, const char *requested_repo) 452 { 453 ucl_object_iter_t it = NULL; 454 const ucl_object_t *cur; 455 const char *key; 456 457 while ((cur = ucl_iterate_object(obj, &it, true))) { 458 key = ucl_object_key(cur); 459 460 if (key == NULL) 461 continue; 462 463 if (cur->type != UCL_OBJECT) 464 continue; 465 466 if (requested_repo != NULL && strcmp(requested_repo, key) != 0) 467 continue; 468 parse_repo(cur); 469 } 470 } 471 472 473 static int 474 read_conf_file(const char *confpath, const char *requested_repo, 475 pkg_conf_file_t conftype) 476 { 477 struct ucl_parser *p; 478 ucl_object_t *obj = NULL; 479 char *abi = pkg_get_myabi(), *major, *minor; 480 struct utsname uts; 481 int ret; 482 483 if (uname(&uts)) 484 err(EXIT_FAILURE, "uname"); 485 if (abi == NULL) 486 errx(EXIT_FAILURE, "Failed to determine ABI"); 487 488 p = ucl_parser_new(0); 489 asprintf(&major, "%d", __FreeBSD_version/100000); 490 if (major == NULL) 491 err(EXIT_FAILURE, "asprintf"); 492 asprintf(&minor, "%d", (__FreeBSD_version / 1000) % 100); 493 if (minor == NULL) 494 err(EXIT_FAILURE, "asprintf"); 495 ucl_parser_register_variable(p, "ABI", abi); 496 ucl_parser_register_variable(p, "OSNAME", uts.sysname); 497 ucl_parser_register_variable(p, "RELEASE", major); 498 ucl_parser_register_variable(p, "VERSION_MAJOR", major); 499 ucl_parser_register_variable(p, "VERSION_MINOR", minor); 500 501 if (!ucl_parser_add_file(p, confpath)) { 502 if (errno != ENOENT) 503 errx(EXIT_FAILURE, "Unable to parse configuration " 504 "file %s: %s", confpath, ucl_parser_get_error(p)); 505 /* no configuration present */ 506 ret = 1; 507 goto out; 508 } 509 510 obj = ucl_parser_get_object(p); 511 if (obj->type != UCL_OBJECT) 512 warnx("Invalid configuration format, ignoring the " 513 "configuration file %s", confpath); 514 else { 515 if (conftype == CONFFILE_PKG) 516 config_parse(obj); 517 else if (conftype == CONFFILE_REPO) 518 parse_repo_file(obj, requested_repo); 519 } 520 ucl_object_unref(obj); 521 522 ret = 0; 523 out: 524 ucl_parser_free(p); 525 free(abi); 526 free(major); 527 free(minor); 528 529 return (ret); 530 } 531 532 static void 533 load_repositories(const char *repodir, const char *requested_repo) 534 { 535 struct dirent *ent; 536 DIR *d; 537 char *p; 538 size_t n; 539 char path[MAXPATHLEN]; 540 541 if ((d = opendir(repodir)) == NULL) 542 return; 543 544 while ((ent = readdir(d))) { 545 /* Trim out 'repos'. */ 546 if ((n = strlen(ent->d_name)) <= 5) 547 continue; 548 p = &ent->d_name[n - 5]; 549 if (strcmp(p, ".conf") == 0) { 550 snprintf(path, sizeof(path), "%s%s%s", 551 repodir, 552 repodir[strlen(repodir) - 1] == '/' ? "" : "/", 553 ent->d_name); 554 if (access(path, F_OK) != 0) 555 continue; 556 if (read_conf_file(path, requested_repo, 557 CONFFILE_REPO)) { 558 goto cleanup; 559 } 560 } 561 } 562 563 cleanup: 564 closedir(d); 565 } 566 567 int 568 config_init(const char *requested_repo) 569 { 570 char *val; 571 int i; 572 const char *localbase; 573 char *abi, *env_list_item; 574 char confpath[MAXPATHLEN]; 575 struct config_value *cv; 576 577 for (i = 0; i < CONFIG_SIZE; i++) { 578 val = getenv(c[i].key); 579 if (val != NULL) { 580 c[i].envset = true; 581 switch (c[i].type) { 582 case PKG_CONFIG_LIST: 583 /* Split up comma-separated items from env. */ 584 c[i].list = malloc(sizeof(*c[i].list)); 585 STAILQ_INIT(c[i].list); 586 for (env_list_item = strtok(val, ","); 587 env_list_item != NULL; 588 env_list_item = strtok(NULL, ",")) { 589 cv = 590 malloc(sizeof(struct config_value)); 591 cv->value = 592 strdup(env_list_item); 593 STAILQ_INSERT_TAIL(c[i].list, cv, 594 next); 595 } 596 break; 597 default: 598 c[i].val = val; 599 break; 600 } 601 } 602 } 603 604 /* Read LOCALBASE/etc/pkg.conf first. */ 605 localbase = getlocalbase(); 606 snprintf(confpath, sizeof(confpath), "%s/etc/pkg.conf", localbase); 607 608 if (access(confpath, F_OK) == 0 && read_conf_file(confpath, NULL, 609 CONFFILE_PKG)) 610 goto finalize; 611 612 /* Then read in all repos from REPOS_DIR list of directories. */ 613 if (c[REPOS_DIR].list == NULL) { 614 c[REPOS_DIR].list = malloc(sizeof(*c[REPOS_DIR].list)); 615 STAILQ_INIT(c[REPOS_DIR].list); 616 cv = malloc(sizeof(struct config_value)); 617 cv->value = strdup("/etc/pkg"); 618 STAILQ_INSERT_TAIL(c[REPOS_DIR].list, cv, next); 619 cv = malloc(sizeof(struct config_value)); 620 if (asprintf(&cv->value, "%s/etc/pkg/repos", localbase) < 0) 621 goto finalize; 622 STAILQ_INSERT_TAIL(c[REPOS_DIR].list, cv, next); 623 } 624 625 STAILQ_FOREACH(cv, c[REPOS_DIR].list, next) 626 load_repositories(cv->value, requested_repo); 627 628 finalize: 629 if (c[ABI].val == NULL && c[ABI].value == NULL) { 630 abi = pkg_get_myabi(); 631 if (abi == NULL) 632 errx(EXIT_FAILURE, "Failed to determine the system " 633 "ABI"); 634 c[ABI].val = abi; 635 } 636 637 return (0); 638 } 639 640 int 641 config_string(pkg_config_key k, const char **val) 642 { 643 if (c[k].type != PKG_CONFIG_STRING) 644 return (-1); 645 646 if (c[k].value != NULL) 647 *val = c[k].value; 648 else 649 *val = c[k].val; 650 651 return (0); 652 } 653 654 int 655 config_bool(pkg_config_key k, bool *val) 656 { 657 const char *value; 658 659 if (c[k].type != PKG_CONFIG_BOOL) 660 return (-1); 661 662 *val = false; 663 664 if (c[k].value != NULL) 665 value = c[k].value; 666 else 667 value = c[k].val; 668 669 if (boolstr_to_bool(value)) 670 *val = true; 671 672 return (0); 673 } 674 675 struct repositories * 676 config_get_repositories(void) 677 { 678 if (STAILQ_EMPTY(&repositories)) { 679 /* Fall back to PACKAGESITE - deprecated - */ 680 struct repository *r = calloc(1, sizeof(*r)); 681 if (r == NULL) 682 err(EXIT_FAILURE, "calloc"); 683 r->name = strdup("fallback"); 684 if (r->name == NULL) 685 err(EXIT_FAILURE, "strdup"); 686 subst_packagesite(c[ABI].value != NULL ? c[ABI].value : c[ABI].val); 687 r->url = c[PACKAGESITE].value; 688 if (c[SIGNATURE_TYPE].value != NULL) 689 if (!parse_signature_type(r, c[SIGNATURE_TYPE].value)) 690 exit(EXIT_FAILURE); 691 if (c[MIRROR_TYPE].value != NULL) 692 parse_mirror_type(r, c[MIRROR_TYPE].value); 693 if (c[PUBKEY].value != NULL) 694 r->pubkey = c[PUBKEY].value; 695 if (c[FINGERPRINTS].value != NULL) 696 r->fingerprints = c[FINGERPRINTS].value; 697 STAILQ_INSERT_TAIL(&repositories, r, next); 698 } 699 return (&repositories); 700 } 701 702 void 703 config_finish(void) { 704 int i; 705 706 for (i = 0; i < CONFIG_SIZE; i++) 707 free(c[i].value); 708 } 709