1 /*- 2 * Copyright (c) 2012-2013 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 <yaml.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(yaml_document_t *doc, yaml_node_t *node) 272 { 273 yaml_node_pair_t *pair; 274 yaml_char_t *function, *fp; 275 struct fingerprint *f; 276 hash_t fct = HASH_UNKNOWN; 277 278 function = fp = NULL; 279 280 pair = node->data.mapping.pairs.start; 281 while (pair < node->data.mapping.pairs.top) { 282 yaml_node_t *key = yaml_document_get_node(doc, pair->key); 283 yaml_node_t *val = yaml_document_get_node(doc, pair->value); 284 285 if (key->data.scalar.length <= 0) { 286 ++pair; 287 continue; 288 } 289 290 if (val->type != YAML_SCALAR_NODE) { 291 ++pair; 292 continue; 293 } 294 295 if (strcasecmp(key->data.scalar.value, "function") == 0) 296 function = val->data.scalar.value; 297 else if (strcasecmp(key->data.scalar.value, "fingerprint") 298 == 0) 299 fp = val->data.scalar.value; 300 301 ++pair; 302 continue; 303 } 304 305 if (fp == NULL || function == NULL) 306 return (NULL); 307 308 if (strcasecmp(function, "sha256") == 0) 309 fct = HASH_SHA256; 310 311 if (fct == HASH_UNKNOWN) { 312 fprintf(stderr, "Unsupported hashing function: %s\n", function); 313 return (NULL); 314 } 315 316 f = calloc(1, sizeof(struct fingerprint)); 317 f->type = fct; 318 strlcpy(f->hash, fp, sizeof(f->hash)); 319 320 return (f); 321 } 322 323 static void 324 free_fingerprint_list(struct fingerprint_list* list) 325 { 326 struct fingerprint* fingerprint; 327 328 STAILQ_FOREACH(fingerprint, list, next) { 329 if (fingerprint->name) 330 free(fingerprint->name); 331 free(fingerprint); 332 } 333 free(list); 334 } 335 336 static struct fingerprint * 337 load_fingerprint(const char *dir, const char *filename) 338 { 339 yaml_parser_t parser; 340 yaml_document_t doc; 341 yaml_node_t *node; 342 FILE *fp; 343 struct fingerprint *f; 344 char path[MAXPATHLEN]; 345 346 f = NULL; 347 348 snprintf(path, MAXPATHLEN, "%s/%s", dir, filename); 349 350 if ((fp = fopen(path, "r")) == NULL) 351 return (NULL); 352 353 yaml_parser_initialize(&parser); 354 yaml_parser_set_input_file(&parser, fp); 355 yaml_parser_load(&parser, &doc); 356 357 node = yaml_document_get_root_node(&doc); 358 if (node == NULL || node->type != YAML_MAPPING_NODE) 359 goto out; 360 361 f = parse_fingerprint(&doc, node); 362 f->name = strdup(filename); 363 364 out: 365 yaml_document_delete(&doc); 366 yaml_parser_delete(&parser); 367 fclose(fp); 368 369 return (f); 370 } 371 372 static struct fingerprint_list * 373 load_fingerprints(const char *path, int *count) 374 { 375 DIR *d; 376 struct dirent *ent; 377 struct fingerprint *finger; 378 struct fingerprint_list *fingerprints; 379 380 *count = 0; 381 382 fingerprints = calloc(1, sizeof(struct fingerprint_list)); 383 if (fingerprints == NULL) 384 return (NULL); 385 STAILQ_INIT(fingerprints); 386 387 if ((d = opendir(path)) == NULL) 388 return (NULL); 389 390 while ((ent = readdir(d))) { 391 if (strcmp(ent->d_name, ".") == 0 || 392 strcmp(ent->d_name, "..") == 0) 393 continue; 394 finger = load_fingerprint(path, ent->d_name); 395 if (finger != NULL) { 396 STAILQ_INSERT_TAIL(fingerprints, finger, next); 397 ++(*count); 398 } 399 } 400 401 closedir(d); 402 403 return (fingerprints); 404 } 405 406 static void 407 sha256_hash(unsigned char hash[SHA256_DIGEST_LENGTH], 408 char out[SHA256_DIGEST_LENGTH * 2 + 1]) 409 { 410 int i; 411 412 for (i = 0; i < SHA256_DIGEST_LENGTH; i++) 413 sprintf(out + (i * 2), "%02x", hash[i]); 414 415 out[SHA256_DIGEST_LENGTH * 2] = '\0'; 416 } 417 418 static void 419 sha256_buf(char *buf, size_t len, char out[SHA256_DIGEST_LENGTH * 2 + 1]) 420 { 421 unsigned char hash[SHA256_DIGEST_LENGTH]; 422 SHA256_CTX sha256; 423 424 out[0] = '\0'; 425 426 SHA256_Init(&sha256); 427 SHA256_Update(&sha256, buf, len); 428 SHA256_Final(hash, &sha256); 429 sha256_hash(hash, out); 430 } 431 432 static int 433 sha256_fd(int fd, char out[SHA256_DIGEST_LENGTH * 2 + 1]) 434 { 435 int my_fd; 436 FILE *fp; 437 char buffer[BUFSIZ]; 438 unsigned char hash[SHA256_DIGEST_LENGTH]; 439 size_t r; 440 int ret; 441 SHA256_CTX sha256; 442 443 my_fd = -1; 444 fp = NULL; 445 r = 0; 446 ret = 1; 447 448 out[0] = '\0'; 449 450 /* Duplicate the fd so that fclose(3) does not close it. */ 451 if ((my_fd = dup(fd)) == -1) { 452 warnx("dup"); 453 goto cleanup; 454 } 455 456 if ((fp = fdopen(my_fd, "rb")) == NULL) { 457 warnx("fdopen"); 458 goto cleanup; 459 } 460 461 SHA256_Init(&sha256); 462 463 while ((r = fread(buffer, 1, BUFSIZ, fp)) > 0) 464 SHA256_Update(&sha256, buffer, r); 465 466 if (ferror(fp) != 0) { 467 warnx("fread"); 468 goto cleanup; 469 } 470 471 SHA256_Final(hash, &sha256); 472 sha256_hash(hash, out); 473 ret = 0; 474 475 cleanup: 476 if (fp != NULL) 477 fclose(fp); 478 else if (my_fd != -1) 479 close(my_fd); 480 (void)lseek(fd, 0, SEEK_SET); 481 482 return (ret); 483 } 484 485 static EVP_PKEY * 486 load_public_key_buf(const unsigned char *cert, int certlen) 487 { 488 EVP_PKEY *pkey; 489 BIO *bp; 490 char errbuf[1024]; 491 492 bp = BIO_new_mem_buf(__DECONST(void *, cert), certlen); 493 494 if ((pkey = PEM_read_bio_PUBKEY(bp, NULL, NULL, NULL)) == NULL) 495 warnx("%s", ERR_error_string(ERR_get_error(), errbuf)); 496 497 BIO_free(bp); 498 499 return (pkey); 500 } 501 502 static bool 503 rsa_verify_cert(int fd, const unsigned char *key, int keylen, 504 unsigned char *sig, int siglen) 505 { 506 EVP_MD_CTX *mdctx; 507 EVP_PKEY *pkey; 508 char sha256[(SHA256_DIGEST_LENGTH * 2) + 2]; 509 char errbuf[1024]; 510 bool ret; 511 512 pkey = NULL; 513 mdctx = NULL; 514 ret = false; 515 516 /* Compute SHA256 of the package. */ 517 if (lseek(fd, 0, 0) == -1) { 518 warn("lseek"); 519 goto cleanup; 520 } 521 if ((sha256_fd(fd, sha256)) == -1) { 522 warnx("Error creating SHA256 hash for package"); 523 goto cleanup; 524 } 525 526 if ((pkey = load_public_key_buf(key, keylen)) == NULL) { 527 warnx("Error reading public key"); 528 goto cleanup; 529 } 530 531 /* Verify signature of the SHA256(pkg) is valid. */ 532 if ((mdctx = EVP_MD_CTX_create()) == NULL) { 533 warnx("%s", ERR_error_string(ERR_get_error(), errbuf)); 534 goto error; 535 } 536 537 if (EVP_DigestVerifyInit(mdctx, NULL, EVP_sha256(), NULL, pkey) != 1) { 538 warnx("%s", ERR_error_string(ERR_get_error(), errbuf)); 539 goto error; 540 } 541 if (EVP_DigestVerifyUpdate(mdctx, sha256, strlen(sha256)) != 1) { 542 warnx("%s", ERR_error_string(ERR_get_error(), errbuf)); 543 goto error; 544 } 545 546 if (EVP_DigestVerifyFinal(mdctx, sig, siglen) != 1) { 547 warnx("%s", ERR_error_string(ERR_get_error(), errbuf)); 548 goto error; 549 } 550 551 ret = true; 552 printf("done\n"); 553 goto cleanup; 554 555 error: 556 printf("failed\n"); 557 558 cleanup: 559 if (pkey) 560 EVP_PKEY_free(pkey); 561 if (mdctx) 562 EVP_MD_CTX_destroy(mdctx); 563 ERR_free_strings(); 564 565 return (ret); 566 } 567 568 static struct sig_cert * 569 parse_cert(int fd) { 570 int my_fd; 571 struct sig_cert *sc; 572 FILE *fp; 573 struct sbuf *buf, *sig, *cert; 574 char *line; 575 size_t linecap; 576 ssize_t linelen; 577 578 buf = NULL; 579 my_fd = -1; 580 sc = NULL; 581 line = NULL; 582 linecap = 0; 583 584 if (lseek(fd, 0, 0) == -1) { 585 warn("lseek"); 586 return (NULL); 587 } 588 589 /* Duplicate the fd so that fclose(3) does not close it. */ 590 if ((my_fd = dup(fd)) == -1) { 591 warnx("dup"); 592 return (NULL); 593 } 594 595 if ((fp = fdopen(my_fd, "rb")) == NULL) { 596 warn("fdopen"); 597 close(my_fd); 598 return (NULL); 599 } 600 601 sig = sbuf_new_auto(); 602 cert = sbuf_new_auto(); 603 604 while ((linelen = getline(&line, &linecap, fp)) > 0) { 605 if (strcmp(line, "SIGNATURE\n") == 0) { 606 buf = sig; 607 continue; 608 } else if (strcmp(line, "CERT\n") == 0) { 609 buf = cert; 610 continue; 611 } else if (strcmp(line, "END\n") == 0) { 612 break; 613 } 614 if (buf != NULL) 615 sbuf_bcat(buf, line, linelen); 616 } 617 618 fclose(fp); 619 620 /* Trim out unrelated trailing newline */ 621 sbuf_setpos(sig, sbuf_len(sig) - 1); 622 623 sbuf_finish(sig); 624 sbuf_finish(cert); 625 626 sc = calloc(1, sizeof(struct sig_cert)); 627 sc->siglen = sbuf_len(sig); 628 sc->sig = calloc(1, sc->siglen); 629 memcpy(sc->sig, sbuf_data(sig), sc->siglen); 630 631 sc->certlen = sbuf_len(cert); 632 sc->cert = strdup(sbuf_data(cert)); 633 634 sbuf_delete(sig); 635 sbuf_delete(cert); 636 637 return (sc); 638 } 639 640 static bool 641 verify_signature(int fd_pkg, int fd_sig) 642 { 643 struct fingerprint_list *trusted, *revoked; 644 struct fingerprint *fingerprint; 645 struct sig_cert *sc; 646 bool ret; 647 int trusted_count, revoked_count; 648 const char *fingerprints; 649 char path[MAXPATHLEN]; 650 char hash[SHA256_DIGEST_LENGTH * 2 + 1]; 651 652 sc = NULL; 653 trusted = revoked = NULL; 654 ret = false; 655 656 /* Read and parse fingerprints. */ 657 if (config_string(FINGERPRINTS, &fingerprints) != 0) { 658 warnx("No CONFIG_FINGERPRINTS defined"); 659 goto cleanup; 660 } 661 662 snprintf(path, MAXPATHLEN, "%s/trusted", fingerprints); 663 if ((trusted = load_fingerprints(path, &trusted_count)) == NULL) { 664 warnx("Error loading trusted certificates"); 665 goto cleanup; 666 } 667 668 if (trusted_count == 0 || trusted == NULL) { 669 fprintf(stderr, "No trusted certificates found.\n"); 670 goto cleanup; 671 } 672 673 snprintf(path, MAXPATHLEN, "%s/revoked", fingerprints); 674 if ((revoked = load_fingerprints(path, &revoked_count)) == NULL) { 675 warnx("Error loading revoked certificates"); 676 goto cleanup; 677 } 678 679 /* Read certificate and signature in. */ 680 if ((sc = parse_cert(fd_sig)) == NULL) { 681 warnx("Error parsing certificate"); 682 goto cleanup; 683 } 684 /* Explicitly mark as non-trusted until proven otherwise. */ 685 sc->trusted = false; 686 687 /* Parse signature and pubkey out of the certificate */ 688 sha256_buf(sc->cert, sc->certlen, hash); 689 690 /* Check if this hash is revoked */ 691 if (revoked != NULL) { 692 STAILQ_FOREACH(fingerprint, revoked, next) { 693 if (strcasecmp(fingerprint->hash, hash) == 0) { 694 fprintf(stderr, "The package was signed with " 695 "revoked certificate %s\n", 696 fingerprint->name); 697 goto cleanup; 698 } 699 } 700 } 701 702 STAILQ_FOREACH(fingerprint, trusted, next) { 703 if (strcasecmp(fingerprint->hash, hash) == 0) { 704 sc->trusted = true; 705 sc->name = strdup(fingerprint->name); 706 break; 707 } 708 } 709 710 if (sc->trusted == false) { 711 fprintf(stderr, "No trusted fingerprint found matching " 712 "package's certificate\n"); 713 goto cleanup; 714 } 715 716 /* Verify the signature. */ 717 printf("Verifying signature with trusted certificate %s... ", sc->name); 718 if (rsa_verify_cert(fd_pkg, sc->cert, sc->certlen, sc->sig, 719 sc->siglen) == false) { 720 fprintf(stderr, "Signature is not valid\n"); 721 goto cleanup; 722 } 723 724 ret = true; 725 726 cleanup: 727 if (trusted) 728 free_fingerprint_list(trusted); 729 if (revoked) 730 free_fingerprint_list(revoked); 731 if (sc) { 732 if (sc->cert) 733 free(sc->cert); 734 if (sc->sig) 735 free(sc->sig); 736 if (sc->name) 737 free(sc->name); 738 free(sc); 739 } 740 741 return (ret); 742 } 743 744 static int 745 bootstrap_pkg(bool force) 746 { 747 FILE *config; 748 int fd_pkg, fd_sig; 749 int ret; 750 char *site; 751 char url[MAXPATHLEN]; 752 char conf[MAXPATHLEN]; 753 char tmppkg[MAXPATHLEN]; 754 char tmpsig[MAXPATHLEN]; 755 const char *packagesite; 756 const char *signature_type; 757 char pkgstatic[MAXPATHLEN]; 758 759 fd_sig = -1; 760 ret = -1; 761 config = NULL; 762 763 if (config_string(PACKAGESITE, &packagesite) != 0) { 764 warnx("No PACKAGESITE defined"); 765 return (-1); 766 } 767 768 if (config_string(SIGNATURE_TYPE, &signature_type) != 0) { 769 warnx("Error looking up SIGNATURE_TYPE"); 770 return (-1); 771 } 772 773 printf("Bootstrapping pkg from %s, please wait...\n", packagesite); 774 775 /* Support pkg+http:// for PACKAGESITE which is the new format 776 in 1.2 to avoid confusion on why http://pkg.FreeBSD.org has 777 no A record. */ 778 if (strncmp(URL_SCHEME_PREFIX, packagesite, 779 strlen(URL_SCHEME_PREFIX)) == 0) 780 packagesite += strlen(URL_SCHEME_PREFIX); 781 snprintf(url, MAXPATHLEN, "%s/Latest/pkg.txz", packagesite); 782 783 snprintf(tmppkg, MAXPATHLEN, "%s/pkg.txz.XXXXXX", 784 getenv("TMPDIR") ? getenv("TMPDIR") : _PATH_TMP); 785 786 if ((fd_pkg = fetch_to_fd(url, tmppkg)) == -1) 787 goto fetchfail; 788 789 if (signature_type != NULL && 790 strcasecmp(signature_type, "FINGERPRINTS") == 0) { 791 snprintf(tmpsig, MAXPATHLEN, "%s/pkg.txz.sig.XXXXXX", 792 getenv("TMPDIR") ? getenv("TMPDIR") : _PATH_TMP); 793 snprintf(url, MAXPATHLEN, "%s/Latest/pkg.txz.sig", 794 packagesite); 795 796 if ((fd_sig = fetch_to_fd(url, tmpsig)) == -1) { 797 fprintf(stderr, "Signature for pkg not available.\n"); 798 goto fetchfail; 799 } 800 801 if (verify_signature(fd_pkg, fd_sig) == false) 802 goto cleanup; 803 } 804 805 if ((ret = extract_pkg_static(fd_pkg, pkgstatic, MAXPATHLEN)) == 0) 806 ret = install_pkg_static(pkgstatic, tmppkg, force); 807 808 snprintf(conf, MAXPATHLEN, "%s/etc/pkg.conf", 809 getenv("LOCALBASE") ? getenv("LOCALBASE") : _LOCALBASE); 810 811 if (access(conf, R_OK) == -1) { 812 site = strrchr(url, '/'); 813 if (site == NULL) 814 goto cleanup; 815 site[0] = '\0'; 816 site = strrchr(url, '/'); 817 if (site == NULL) 818 goto cleanup; 819 site[0] = '\0'; 820 821 config = fopen(conf, "w+"); 822 if (config == NULL) 823 goto cleanup; 824 fprintf(config, "packagesite: %s\n", url); 825 fclose(config); 826 } 827 828 goto cleanup; 829 830 fetchfail: 831 warnx("Error fetching %s: %s", url, fetchLastErrString); 832 fprintf(stderr, "A pre-built version of pkg could not be found for " 833 "your system.\n"); 834 fprintf(stderr, "Consider changing PACKAGESITE or installing it from " 835 "ports: 'ports-mgmt/pkg'.\n"); 836 837 cleanup: 838 if (fd_sig != -1) { 839 close(fd_sig); 840 unlink(tmpsig); 841 } 842 close(fd_pkg); 843 unlink(tmppkg); 844 845 return (ret); 846 } 847 848 static const char confirmation_message[] = 849 "The package management tool is not yet installed on your system.\n" 850 "Do you want to fetch and install it now? [y/N]: "; 851 852 static int 853 pkg_query_yes_no(void) 854 { 855 int ret, c; 856 857 c = getchar(); 858 859 if (c == 'y' || c == 'Y') 860 ret = 1; 861 else 862 ret = 0; 863 864 while (c != '\n' && c != EOF) 865 c = getchar(); 866 867 return (ret); 868 } 869 870 static int 871 bootstrap_pkg_local(const char *pkgpath, bool force) 872 { 873 char path[MAXPATHLEN]; 874 char pkgstatic[MAXPATHLEN]; 875 const char *signature_type; 876 int fd_pkg, fd_sig, ret; 877 878 fd_sig = -1; 879 ret = -1; 880 881 fd_pkg = open(pkgpath, O_RDONLY); 882 if (fd_pkg == -1) 883 err(EXIT_FAILURE, "Unable to open %s", pkgpath); 884 885 if (config_string(SIGNATURE_TYPE, &signature_type) != 0) { 886 warnx("Error looking up SIGNATURE_TYPE"); 887 return (-1); 888 } 889 if (signature_type != NULL && 890 strcasecmp(signature_type, "FINGERPRINTS") == 0) { 891 snprintf(path, sizeof(path), "%s.sig", pkgpath); 892 893 if ((fd_sig = open(path, O_RDONLY)) == -1) { 894 fprintf(stderr, "Signature for pkg not available.\n"); 895 goto cleanup; 896 } 897 898 if (verify_signature(fd_pkg, fd_sig) == false) 899 goto cleanup; 900 } 901 902 if ((ret = extract_pkg_static(fd_pkg, pkgstatic, MAXPATHLEN)) == 0) 903 ret = install_pkg_static(pkgstatic, pkgpath, force); 904 905 cleanup: 906 close(fd_pkg); 907 if (fd_sig != -1) 908 close(fd_sig); 909 910 return (ret); 911 } 912 913 int 914 main(__unused int argc, char *argv[]) 915 { 916 char pkgpath[MAXPATHLEN]; 917 const char *pkgarg; 918 bool bootstrap_only, force, yes; 919 920 bootstrap_only = false; 921 force = false; 922 pkgarg = NULL; 923 yes = false; 924 925 snprintf(pkgpath, MAXPATHLEN, "%s/sbin/pkg", 926 getenv("LOCALBASE") ? getenv("LOCALBASE") : _LOCALBASE); 927 928 if (argc > 1 && strcmp(argv[1], "bootstrap") == 0) { 929 bootstrap_only = true; 930 if (argc == 3 && strcmp(argv[2], "-f") == 0) 931 force = true; 932 } 933 934 if ((bootstrap_only && force) || access(pkgpath, X_OK) == -1) { 935 /* 936 * To allow 'pkg -N' to be used as a reliable test for whether 937 * a system is configured to use pkg, don't bootstrap pkg 938 * when that argument is given as argv[1]. 939 */ 940 if (argv[1] != NULL && strcmp(argv[1], "-N") == 0) 941 errx(EXIT_FAILURE, "pkg is not installed"); 942 943 config_init(); 944 945 if (argc > 1 && strcmp(argv[1], "add") == 0) { 946 if (argc > 2 && strcmp(argv[2], "-f") == 0) { 947 force = true; 948 pkgarg = argv[3]; 949 } else 950 pkgarg = argv[2]; 951 if (pkgarg == NULL) { 952 fprintf(stderr, "Path to pkg.txz required\n"); 953 exit(EXIT_FAILURE); 954 } 955 if (access(pkgarg, R_OK) == -1) { 956 fprintf(stderr, "No such file: %s\n", pkgarg); 957 exit(EXIT_FAILURE); 958 } 959 if (bootstrap_pkg_local(pkgarg, force) != 0) 960 exit(EXIT_FAILURE); 961 exit(EXIT_SUCCESS); 962 } 963 /* 964 * Do not ask for confirmation if either of stdin or stdout is 965 * not tty. Check the environment to see if user has answer 966 * tucked in there already. 967 */ 968 config_bool(ASSUME_ALWAYS_YES, &yes); 969 if (!yes) { 970 printf("%s", confirmation_message); 971 if (!isatty(fileno(stdin))) 972 exit(EXIT_FAILURE); 973 974 if (pkg_query_yes_no() == 0) 975 exit(EXIT_FAILURE); 976 } 977 if (bootstrap_pkg(force) != 0) 978 exit(EXIT_FAILURE); 979 config_finish(); 980 981 if (bootstrap_only) 982 exit(EXIT_SUCCESS); 983 } else if (bootstrap_only) { 984 printf("pkg already bootstrapped at %s\n", pkgpath); 985 exit(EXIT_SUCCESS); 986 } 987 988 execv(pkgpath, argv); 989 990 /* NOT REACHED */ 991 return (EXIT_FAILURE); 992 } 993