1 /*- 2 * Copyright (c) 2012-2014 Baptiste Daroussin <bapt@FreeBSD.org> 3 * Copyright (c) 2013 Bryan Drewery <bdrewery@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/queue.h> 33 #include <sys/types.h> 34 #include <sys/sbuf.h> 35 #include <sys/wait.h> 36 37 #define _WITH_GETLINE 38 #include <archive.h> 39 #include <archive_entry.h> 40 #include <dirent.h> 41 #include <err.h> 42 #include <errno.h> 43 #include <fcntl.h> 44 #include <fetch.h> 45 #include <paths.h> 46 #include <stdbool.h> 47 #include <stdlib.h> 48 #include <stdio.h> 49 #include <string.h> 50 #include <unistd.h> 51 #include <ucl.h> 52 53 #include <openssl/err.h> 54 #include <openssl/ssl.h> 55 56 #include "dns_utils.h" 57 #include "config.h" 58 59 struct sig_cert { 60 char *name; 61 unsigned char *sig; 62 int siglen; 63 unsigned char *cert; 64 int certlen; 65 bool trusted; 66 }; 67 68 typedef enum { 69 HASH_UNKNOWN, 70 HASH_SHA256, 71 } hash_t; 72 73 struct fingerprint { 74 hash_t type; 75 char *name; 76 char hash[BUFSIZ]; 77 STAILQ_ENTRY(fingerprint) next; 78 }; 79 80 STAILQ_HEAD(fingerprint_list, fingerprint); 81 82 static int 83 extract_pkg_static(int fd, char *p, int sz) 84 { 85 struct archive *a; 86 struct archive_entry *ae; 87 char *end; 88 int ret, r; 89 90 ret = -1; 91 a = archive_read_new(); 92 if (a == NULL) { 93 warn("archive_read_new"); 94 return (ret); 95 } 96 archive_read_support_filter_all(a); 97 archive_read_support_format_tar(a); 98 99 if (lseek(fd, 0, 0) == -1) { 100 warn("lseek"); 101 goto cleanup; 102 } 103 104 if (archive_read_open_fd(a, fd, 4096) != ARCHIVE_OK) { 105 warnx("archive_read_open_fd: %s", archive_error_string(a)); 106 goto cleanup; 107 } 108 109 ae = NULL; 110 while ((r = archive_read_next_header(a, &ae)) == ARCHIVE_OK) { 111 end = strrchr(archive_entry_pathname(ae), '/'); 112 if (end == NULL) 113 continue; 114 115 if (strcmp(end, "/pkg-static") == 0) { 116 r = archive_read_extract(a, ae, 117 ARCHIVE_EXTRACT_OWNER | ARCHIVE_EXTRACT_PERM | 118 ARCHIVE_EXTRACT_TIME | ARCHIVE_EXTRACT_ACL | 119 ARCHIVE_EXTRACT_FFLAGS | ARCHIVE_EXTRACT_XATTR); 120 strlcpy(p, archive_entry_pathname(ae), sz); 121 break; 122 } 123 } 124 125 if (r == ARCHIVE_OK) 126 ret = 0; 127 else 128 warnx("failed to extract pkg-static: %s", 129 archive_error_string(a)); 130 131 cleanup: 132 archive_read_free(a); 133 return (ret); 134 135 } 136 137 static int 138 install_pkg_static(const char *path, const char *pkgpath, bool force) 139 { 140 int pstat; 141 pid_t pid; 142 143 switch ((pid = fork())) { 144 case -1: 145 return (-1); 146 case 0: 147 if (force) 148 execl(path, "pkg-static", "add", "-f", pkgpath, 149 (char *)NULL); 150 else 151 execl(path, "pkg-static", "add", pkgpath, 152 (char *)NULL); 153 _exit(1); 154 default: 155 break; 156 } 157 158 while (waitpid(pid, &pstat, 0) == -1) 159 if (errno != EINTR) 160 return (-1); 161 162 if (WEXITSTATUS(pstat)) 163 return (WEXITSTATUS(pstat)); 164 else if (WIFSIGNALED(pstat)) 165 return (128 & (WTERMSIG(pstat))); 166 return (pstat); 167 } 168 169 static int 170 fetch_to_fd(const char *url, char *path) 171 { 172 struct url *u; 173 struct dns_srvinfo *mirrors, *current; 174 struct url_stat st; 175 FILE *remote; 176 /* To store _https._tcp. + hostname + \0 */ 177 int fd; 178 int retry, max_retry; 179 ssize_t r; 180 char buf[10240]; 181 char zone[MAXHOSTNAMELEN + 13]; 182 static const char *mirror_type = NULL; 183 184 max_retry = 3; 185 current = mirrors = NULL; 186 remote = NULL; 187 188 if (mirror_type == NULL && config_string(MIRROR_TYPE, &mirror_type) 189 != 0) { 190 warnx("No MIRROR_TYPE defined"); 191 return (-1); 192 } 193 194 if ((fd = mkstemp(path)) == -1) { 195 warn("mkstemp()"); 196 return (-1); 197 } 198 199 retry = max_retry; 200 201 if ((u = fetchParseURL(url)) == NULL) { 202 warn("fetchParseURL('%s')", url); 203 return (-1); 204 } 205 206 while (remote == NULL) { 207 if (retry == max_retry) { 208 if (strcmp(u->scheme, "file") != 0 && 209 strcasecmp(mirror_type, "srv") == 0) { 210 snprintf(zone, sizeof(zone), 211 "_%s._tcp.%s", u->scheme, u->host); 212 mirrors = dns_getsrvinfo(zone); 213 current = mirrors; 214 } 215 } 216 217 if (mirrors != NULL) { 218 strlcpy(u->host, current->host, sizeof(u->host)); 219 u->port = current->port; 220 } 221 222 remote = fetchXGet(u, &st, ""); 223 if (remote == NULL) { 224 --retry; 225 if (retry <= 0) 226 goto fetchfail; 227 if (mirrors == NULL) { 228 sleep(1); 229 } else { 230 current = current->next; 231 if (current == NULL) 232 current = mirrors; 233 } 234 } 235 } 236 237 while ((r = fread(buf, 1, sizeof(buf), remote)) > 0) { 238 if (write(fd, buf, r) != r) { 239 warn("write()"); 240 goto fetchfail; 241 } 242 } 243 244 if (r != 0) { 245 warn("An error occurred while fetching pkg(8)"); 246 goto fetchfail; 247 } 248 249 if (ferror(remote)) 250 goto fetchfail; 251 252 goto cleanup; 253 254 fetchfail: 255 if (fd != -1) { 256 close(fd); 257 fd = -1; 258 unlink(path); 259 } 260 261 cleanup: 262 if (remote != NULL) 263 fclose(remote); 264 265 return fd; 266 } 267 268 static struct fingerprint * 269 parse_fingerprint(ucl_object_t *obj) 270 { 271 const ucl_object_t *cur; 272 ucl_object_iter_t it = NULL; 273 const char *function, *fp, *key; 274 struct fingerprint *f; 275 hash_t fct = HASH_UNKNOWN; 276 277 function = fp = NULL; 278 279 while ((cur = ucl_iterate_object(obj, &it, true))) { 280 key = ucl_object_key(cur); 281 if (cur->type != UCL_STRING) 282 continue; 283 if (strcasecmp(key, "function") == 0) { 284 function = ucl_object_tostring(cur); 285 continue; 286 } 287 if (strcasecmp(key, "fingerprint") == 0) { 288 fp = ucl_object_tostring(cur); 289 continue; 290 } 291 } 292 293 if (fp == NULL || function == NULL) 294 return (NULL); 295 296 if (strcasecmp(function, "sha256") == 0) 297 fct = HASH_SHA256; 298 299 if (fct == HASH_UNKNOWN) { 300 warnx("Unsupported hashing function: %s", function); 301 return (NULL); 302 } 303 304 f = calloc(1, sizeof(struct fingerprint)); 305 f->type = fct; 306 strlcpy(f->hash, fp, sizeof(f->hash)); 307 308 return (f); 309 } 310 311 static void 312 free_fingerprint_list(struct fingerprint_list* list) 313 { 314 struct fingerprint *fingerprint, *tmp; 315 316 STAILQ_FOREACH_SAFE(fingerprint, list, next, tmp) { 317 free(fingerprint->name); 318 free(fingerprint); 319 } 320 free(list); 321 } 322 323 static struct fingerprint * 324 load_fingerprint(const char *dir, const char *filename) 325 { 326 ucl_object_t *obj = NULL; 327 struct ucl_parser *p = NULL; 328 struct fingerprint *f; 329 char path[MAXPATHLEN]; 330 331 f = NULL; 332 333 snprintf(path, MAXPATHLEN, "%s/%s", dir, filename); 334 335 p = ucl_parser_new(0); 336 if (!ucl_parser_add_file(p, path)) { 337 warnx("%s: %s", path, ucl_parser_get_error(p)); 338 ucl_parser_free(p); 339 return (NULL); 340 } 341 342 obj = ucl_parser_get_object(p); 343 344 if (obj->type == UCL_OBJECT) 345 f = parse_fingerprint(obj); 346 347 if (f != NULL) 348 f->name = strdup(filename); 349 350 ucl_object_unref(obj); 351 ucl_parser_free(p); 352 353 return (f); 354 } 355 356 static struct fingerprint_list * 357 load_fingerprints(const char *path, int *count) 358 { 359 DIR *d; 360 struct dirent *ent; 361 struct fingerprint *finger; 362 struct fingerprint_list *fingerprints; 363 364 *count = 0; 365 366 fingerprints = calloc(1, sizeof(struct fingerprint_list)); 367 if (fingerprints == NULL) 368 return (NULL); 369 STAILQ_INIT(fingerprints); 370 371 if ((d = opendir(path)) == NULL) { 372 free(fingerprints); 373 374 return (NULL); 375 } 376 377 while ((ent = readdir(d))) { 378 if (strcmp(ent->d_name, ".") == 0 || 379 strcmp(ent->d_name, "..") == 0) 380 continue; 381 finger = load_fingerprint(path, ent->d_name); 382 if (finger != NULL) { 383 STAILQ_INSERT_TAIL(fingerprints, finger, next); 384 ++(*count); 385 } 386 } 387 388 closedir(d); 389 390 return (fingerprints); 391 } 392 393 static void 394 sha256_hash(unsigned char hash[SHA256_DIGEST_LENGTH], 395 char out[SHA256_DIGEST_LENGTH * 2 + 1]) 396 { 397 int i; 398 399 for (i = 0; i < SHA256_DIGEST_LENGTH; i++) 400 sprintf(out + (i * 2), "%02x", hash[i]); 401 402 out[SHA256_DIGEST_LENGTH * 2] = '\0'; 403 } 404 405 static void 406 sha256_buf(char *buf, size_t len, char out[SHA256_DIGEST_LENGTH * 2 + 1]) 407 { 408 unsigned char hash[SHA256_DIGEST_LENGTH]; 409 SHA256_CTX sha256; 410 411 out[0] = '\0'; 412 413 SHA256_Init(&sha256); 414 SHA256_Update(&sha256, buf, len); 415 SHA256_Final(hash, &sha256); 416 sha256_hash(hash, out); 417 } 418 419 static int 420 sha256_fd(int fd, char out[SHA256_DIGEST_LENGTH * 2 + 1]) 421 { 422 int my_fd; 423 FILE *fp; 424 char buffer[BUFSIZ]; 425 unsigned char hash[SHA256_DIGEST_LENGTH]; 426 size_t r; 427 int ret; 428 SHA256_CTX sha256; 429 430 my_fd = -1; 431 fp = NULL; 432 r = 0; 433 ret = 1; 434 435 out[0] = '\0'; 436 437 /* Duplicate the fd so that fclose(3) does not close it. */ 438 if ((my_fd = dup(fd)) == -1) { 439 warnx("dup"); 440 goto cleanup; 441 } 442 443 if ((fp = fdopen(my_fd, "rb")) == NULL) { 444 warnx("fdopen"); 445 goto cleanup; 446 } 447 448 SHA256_Init(&sha256); 449 450 while ((r = fread(buffer, 1, BUFSIZ, fp)) > 0) 451 SHA256_Update(&sha256, buffer, r); 452 453 if (ferror(fp) != 0) { 454 warnx("fread"); 455 goto cleanup; 456 } 457 458 SHA256_Final(hash, &sha256); 459 sha256_hash(hash, out); 460 ret = 0; 461 462 cleanup: 463 if (fp != NULL) 464 fclose(fp); 465 else if (my_fd != -1) 466 close(my_fd); 467 (void)lseek(fd, 0, SEEK_SET); 468 469 return (ret); 470 } 471 472 static EVP_PKEY * 473 load_public_key_buf(const unsigned char *cert, int certlen) 474 { 475 EVP_PKEY *pkey; 476 BIO *bp; 477 char errbuf[1024]; 478 479 bp = BIO_new_mem_buf(__DECONST(void *, cert), certlen); 480 481 if ((pkey = PEM_read_bio_PUBKEY(bp, NULL, NULL, NULL)) == NULL) 482 warnx("%s", ERR_error_string(ERR_get_error(), errbuf)); 483 484 BIO_free(bp); 485 486 return (pkey); 487 } 488 489 static bool 490 rsa_verify_cert(int fd, const unsigned char *key, int keylen, 491 unsigned char *sig, int siglen) 492 { 493 EVP_MD_CTX *mdctx; 494 EVP_PKEY *pkey; 495 char sha256[(SHA256_DIGEST_LENGTH * 2) + 2]; 496 char errbuf[1024]; 497 bool ret; 498 499 pkey = NULL; 500 mdctx = NULL; 501 ret = false; 502 503 /* Compute SHA256 of the package. */ 504 if (lseek(fd, 0, 0) == -1) { 505 warn("lseek"); 506 goto cleanup; 507 } 508 if ((sha256_fd(fd, sha256)) == -1) { 509 warnx("Error creating SHA256 hash for package"); 510 goto cleanup; 511 } 512 513 if ((pkey = load_public_key_buf(key, keylen)) == NULL) { 514 warnx("Error reading public key"); 515 goto cleanup; 516 } 517 518 /* Verify signature of the SHA256(pkg) is valid. */ 519 if ((mdctx = EVP_MD_CTX_create()) == NULL) { 520 warnx("%s", ERR_error_string(ERR_get_error(), errbuf)); 521 goto error; 522 } 523 524 if (EVP_DigestVerifyInit(mdctx, NULL, EVP_sha256(), NULL, pkey) != 1) { 525 warnx("%s", ERR_error_string(ERR_get_error(), errbuf)); 526 goto error; 527 } 528 if (EVP_DigestVerifyUpdate(mdctx, sha256, strlen(sha256)) != 1) { 529 warnx("%s", ERR_error_string(ERR_get_error(), errbuf)); 530 goto error; 531 } 532 533 if (EVP_DigestVerifyFinal(mdctx, sig, siglen) != 1) { 534 warnx("%s", ERR_error_string(ERR_get_error(), errbuf)); 535 goto error; 536 } 537 538 ret = true; 539 printf("done\n"); 540 goto cleanup; 541 542 error: 543 printf("failed\n"); 544 545 cleanup: 546 if (pkey) 547 EVP_PKEY_free(pkey); 548 if (mdctx) 549 EVP_MD_CTX_destroy(mdctx); 550 ERR_free_strings(); 551 552 return (ret); 553 } 554 555 static struct sig_cert * 556 parse_cert(int fd) { 557 int my_fd; 558 struct sig_cert *sc; 559 FILE *fp; 560 struct sbuf *buf, *sig, *cert; 561 char *line; 562 size_t linecap; 563 ssize_t linelen; 564 565 buf = NULL; 566 my_fd = -1; 567 sc = NULL; 568 line = NULL; 569 linecap = 0; 570 571 if (lseek(fd, 0, 0) == -1) { 572 warn("lseek"); 573 return (NULL); 574 } 575 576 /* Duplicate the fd so that fclose(3) does not close it. */ 577 if ((my_fd = dup(fd)) == -1) { 578 warnx("dup"); 579 return (NULL); 580 } 581 582 if ((fp = fdopen(my_fd, "rb")) == NULL) { 583 warn("fdopen"); 584 close(my_fd); 585 return (NULL); 586 } 587 588 sig = sbuf_new_auto(); 589 cert = sbuf_new_auto(); 590 591 while ((linelen = getline(&line, &linecap, fp)) > 0) { 592 if (strcmp(line, "SIGNATURE\n") == 0) { 593 buf = sig; 594 continue; 595 } else if (strcmp(line, "CERT\n") == 0) { 596 buf = cert; 597 continue; 598 } else if (strcmp(line, "END\n") == 0) { 599 break; 600 } 601 if (buf != NULL) 602 sbuf_bcat(buf, line, linelen); 603 } 604 605 fclose(fp); 606 607 /* Trim out unrelated trailing newline */ 608 sbuf_setpos(sig, sbuf_len(sig) - 1); 609 610 sbuf_finish(sig); 611 sbuf_finish(cert); 612 613 sc = calloc(1, sizeof(struct sig_cert)); 614 sc->siglen = sbuf_len(sig); 615 sc->sig = calloc(1, sc->siglen); 616 memcpy(sc->sig, sbuf_data(sig), sc->siglen); 617 618 sc->certlen = sbuf_len(cert); 619 sc->cert = strdup(sbuf_data(cert)); 620 621 sbuf_delete(sig); 622 sbuf_delete(cert); 623 624 return (sc); 625 } 626 627 static bool 628 verify_signature(int fd_pkg, int fd_sig) 629 { 630 struct fingerprint_list *trusted, *revoked; 631 struct fingerprint *fingerprint; 632 struct sig_cert *sc; 633 bool ret; 634 int trusted_count, revoked_count; 635 const char *fingerprints; 636 char path[MAXPATHLEN]; 637 char hash[SHA256_DIGEST_LENGTH * 2 + 1]; 638 639 sc = NULL; 640 trusted = revoked = NULL; 641 ret = false; 642 643 /* Read and parse fingerprints. */ 644 if (config_string(FINGERPRINTS, &fingerprints) != 0) { 645 warnx("No CONFIG_FINGERPRINTS defined"); 646 goto cleanup; 647 } 648 649 snprintf(path, MAXPATHLEN, "%s/trusted", fingerprints); 650 if ((trusted = load_fingerprints(path, &trusted_count)) == NULL) { 651 warnx("Error loading trusted certificates"); 652 goto cleanup; 653 } 654 655 if (trusted_count == 0 || trusted == NULL) { 656 fprintf(stderr, "No trusted certificates found.\n"); 657 goto cleanup; 658 } 659 660 snprintf(path, MAXPATHLEN, "%s/revoked", fingerprints); 661 if ((revoked = load_fingerprints(path, &revoked_count)) == NULL) { 662 warnx("Error loading revoked certificates"); 663 goto cleanup; 664 } 665 666 /* Read certificate and signature in. */ 667 if ((sc = parse_cert(fd_sig)) == NULL) { 668 warnx("Error parsing certificate"); 669 goto cleanup; 670 } 671 /* Explicitly mark as non-trusted until proven otherwise. */ 672 sc->trusted = false; 673 674 /* Parse signature and pubkey out of the certificate */ 675 sha256_buf(sc->cert, sc->certlen, hash); 676 677 /* Check if this hash is revoked */ 678 if (revoked != NULL) { 679 STAILQ_FOREACH(fingerprint, revoked, next) { 680 if (strcasecmp(fingerprint->hash, hash) == 0) { 681 fprintf(stderr, "The package was signed with " 682 "revoked certificate %s\n", 683 fingerprint->name); 684 goto cleanup; 685 } 686 } 687 } 688 689 STAILQ_FOREACH(fingerprint, trusted, next) { 690 if (strcasecmp(fingerprint->hash, hash) == 0) { 691 sc->trusted = true; 692 sc->name = strdup(fingerprint->name); 693 break; 694 } 695 } 696 697 if (sc->trusted == false) { 698 fprintf(stderr, "No trusted fingerprint found matching " 699 "package's certificate\n"); 700 goto cleanup; 701 } 702 703 /* Verify the signature. */ 704 printf("Verifying signature with trusted certificate %s... ", sc->name); 705 if (rsa_verify_cert(fd_pkg, sc->cert, sc->certlen, sc->sig, 706 sc->siglen) == false) { 707 fprintf(stderr, "Signature is not valid\n"); 708 goto cleanup; 709 } 710 711 ret = true; 712 713 cleanup: 714 if (trusted) 715 free_fingerprint_list(trusted); 716 if (revoked) 717 free_fingerprint_list(revoked); 718 if (sc) { 719 free(sc->cert); 720 free(sc->sig); 721 free(sc->name); 722 free(sc); 723 } 724 725 return (ret); 726 } 727 728 static int 729 bootstrap_pkg(bool force) 730 { 731 int fd_pkg, fd_sig; 732 int ret; 733 char url[MAXPATHLEN]; 734 char tmppkg[MAXPATHLEN]; 735 char tmpsig[MAXPATHLEN]; 736 const char *packagesite; 737 const char *signature_type; 738 char pkgstatic[MAXPATHLEN]; 739 740 fd_sig = -1; 741 ret = -1; 742 743 if (config_string(PACKAGESITE, &packagesite) != 0) { 744 warnx("No PACKAGESITE defined"); 745 return (-1); 746 } 747 748 if (config_string(SIGNATURE_TYPE, &signature_type) != 0) { 749 warnx("Error looking up SIGNATURE_TYPE"); 750 return (-1); 751 } 752 753 printf("Bootstrapping pkg from %s, please wait...\n", packagesite); 754 755 /* Support pkg+http:// for PACKAGESITE which is the new format 756 in 1.2 to avoid confusion on why http://pkg.FreeBSD.org has 757 no A record. */ 758 if (strncmp(URL_SCHEME_PREFIX, packagesite, 759 strlen(URL_SCHEME_PREFIX)) == 0) 760 packagesite += strlen(URL_SCHEME_PREFIX); 761 snprintf(url, MAXPATHLEN, "%s/Latest/pkg.txz", packagesite); 762 763 snprintf(tmppkg, MAXPATHLEN, "%s/pkg.txz.XXXXXX", 764 getenv("TMPDIR") ? getenv("TMPDIR") : _PATH_TMP); 765 766 if ((fd_pkg = fetch_to_fd(url, tmppkg)) == -1) 767 goto fetchfail; 768 769 if (signature_type != NULL && 770 strcasecmp(signature_type, "FINGERPRINTS") == 0) { 771 snprintf(tmpsig, MAXPATHLEN, "%s/pkg.txz.sig.XXXXXX", 772 getenv("TMPDIR") ? getenv("TMPDIR") : _PATH_TMP); 773 snprintf(url, MAXPATHLEN, "%s/Latest/pkg.txz.sig", 774 packagesite); 775 776 if ((fd_sig = fetch_to_fd(url, tmpsig)) == -1) { 777 fprintf(stderr, "Signature for pkg not available.\n"); 778 goto fetchfail; 779 } 780 781 if (verify_signature(fd_pkg, fd_sig) == false) 782 goto cleanup; 783 } 784 785 if ((ret = extract_pkg_static(fd_pkg, pkgstatic, MAXPATHLEN)) == 0) 786 ret = install_pkg_static(pkgstatic, tmppkg, force); 787 788 goto cleanup; 789 790 fetchfail: 791 warnx("Error fetching %s: %s", url, fetchLastErrString); 792 fprintf(stderr, "A pre-built version of pkg could not be found for " 793 "your system.\n"); 794 fprintf(stderr, "Consider changing PACKAGESITE or installing it from " 795 "ports: 'ports-mgmt/pkg'.\n"); 796 797 cleanup: 798 if (fd_sig != -1) { 799 close(fd_sig); 800 unlink(tmpsig); 801 } 802 803 if (fd_pkg != -1) { 804 close(fd_pkg); 805 unlink(tmppkg); 806 } 807 808 return (ret); 809 } 810 811 static const char confirmation_message[] = 812 "The package management tool is not yet installed on your system.\n" 813 "Do you want to fetch and install it now? [y/N]: "; 814 815 static const char non_interactive_message[] = 816 "The package management tool is not yet installed on your system.\n" 817 "Please set ASSUME_ALWAYS_YES=yes environment variable to be able to bootstrap " 818 "in non-interactive (stdin not being a tty)\n"; 819 820 static int 821 pkg_query_yes_no(void) 822 { 823 int ret, c; 824 825 c = getchar(); 826 827 if (c == 'y' || c == 'Y') 828 ret = 1; 829 else 830 ret = 0; 831 832 while (c != '\n' && c != EOF) 833 c = getchar(); 834 835 return (ret); 836 } 837 838 static int 839 bootstrap_pkg_local(const char *pkgpath, bool force) 840 { 841 char path[MAXPATHLEN]; 842 char pkgstatic[MAXPATHLEN]; 843 const char *signature_type; 844 int fd_pkg, fd_sig, ret; 845 846 fd_sig = -1; 847 ret = -1; 848 849 fd_pkg = open(pkgpath, O_RDONLY); 850 if (fd_pkg == -1) 851 err(EXIT_FAILURE, "Unable to open %s", pkgpath); 852 853 if (config_string(SIGNATURE_TYPE, &signature_type) != 0) { 854 warnx("Error looking up SIGNATURE_TYPE"); 855 goto cleanup; 856 } 857 if (signature_type != NULL && 858 strcasecmp(signature_type, "FINGERPRINTS") == 0) { 859 snprintf(path, sizeof(path), "%s.sig", pkgpath); 860 861 if ((fd_sig = open(path, O_RDONLY)) == -1) { 862 fprintf(stderr, "Signature for pkg not available.\n"); 863 goto cleanup; 864 } 865 866 if (verify_signature(fd_pkg, fd_sig) == false) 867 goto cleanup; 868 } 869 870 if ((ret = extract_pkg_static(fd_pkg, pkgstatic, MAXPATHLEN)) == 0) 871 ret = install_pkg_static(pkgstatic, pkgpath, force); 872 873 cleanup: 874 close(fd_pkg); 875 if (fd_sig != -1) 876 close(fd_sig); 877 878 return (ret); 879 } 880 881 int 882 main(int argc, char *argv[]) 883 { 884 char pkgpath[MAXPATHLEN]; 885 const char *pkgarg; 886 bool bootstrap_only, force, yes; 887 888 bootstrap_only = false; 889 force = false; 890 pkgarg = NULL; 891 yes = false; 892 893 snprintf(pkgpath, MAXPATHLEN, "%s/sbin/pkg", 894 getenv("LOCALBASE") ? getenv("LOCALBASE") : _LOCALBASE); 895 896 if (argc > 1 && strcmp(argv[1], "bootstrap") == 0) { 897 bootstrap_only = true; 898 if (argc == 3 && strcmp(argv[2], "-f") == 0) 899 force = true; 900 } 901 902 if ((bootstrap_only && force) || access(pkgpath, X_OK) == -1) { 903 /* 904 * To allow 'pkg -N' to be used as a reliable test for whether 905 * a system is configured to use pkg, don't bootstrap pkg 906 * when that argument is given as argv[1]. 907 */ 908 if (argv[1] != NULL && strcmp(argv[1], "-N") == 0) 909 errx(EXIT_FAILURE, "pkg is not installed"); 910 911 config_init(); 912 913 if (argc > 1 && strcmp(argv[1], "add") == 0) { 914 if (argc > 2 && strcmp(argv[2], "-f") == 0) { 915 force = true; 916 pkgarg = argv[3]; 917 } else 918 pkgarg = argv[2]; 919 if (pkgarg == NULL) { 920 fprintf(stderr, "Path to pkg.txz required\n"); 921 exit(EXIT_FAILURE); 922 } 923 if (access(pkgarg, R_OK) == -1) { 924 fprintf(stderr, "No such file: %s\n", pkgarg); 925 exit(EXIT_FAILURE); 926 } 927 if (bootstrap_pkg_local(pkgarg, force) != 0) 928 exit(EXIT_FAILURE); 929 exit(EXIT_SUCCESS); 930 } 931 /* 932 * Do not ask for confirmation if either of stdin or stdout is 933 * not tty. Check the environment to see if user has answer 934 * tucked in there already. 935 */ 936 config_bool(ASSUME_ALWAYS_YES, &yes); 937 if (!yes) { 938 if (!isatty(fileno(stdin))) { 939 fprintf(stderr, non_interactive_message); 940 exit(EXIT_FAILURE); 941 } 942 943 printf("%s", confirmation_message); 944 if (pkg_query_yes_no() == 0) 945 exit(EXIT_FAILURE); 946 } 947 if (bootstrap_pkg(force) != 0) 948 exit(EXIT_FAILURE); 949 config_finish(); 950 951 if (bootstrap_only) 952 exit(EXIT_SUCCESS); 953 } else if (bootstrap_only) { 954 printf("pkg already bootstrapped at %s\n", pkgpath); 955 exit(EXIT_SUCCESS); 956 } 957 958 execv(pkgpath, argv); 959 960 /* NOT REACHED */ 961 return (EXIT_FAILURE); 962 } 963