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