pkg.c revision 287146
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: releng/10.1/usr.sbin/pkg/pkg.c 287146 2015-08-25 20:48:58Z delphij $"); 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 60struct sig_cert { 61 char *name; 62 unsigned char *sig; 63 int siglen; 64 unsigned char *cert; 65 int certlen; 66 bool trusted; 67}; 68 69typedef enum { 70 HASH_UNKNOWN, 71 HASH_SHA256, 72} hash_t; 73 74struct fingerprint { 75 hash_t type; 76 char *name; 77 char hash[BUFSIZ]; 78 STAILQ_ENTRY(fingerprint) next; 79}; 80 81STAILQ_HEAD(fingerprint_list, fingerprint); 82 83static int 84extract_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("failed to extract pkg-static: %s", 130 archive_error_string(a)); 131 132cleanup: 133 archive_read_free(a); 134 return (ret); 135 136} 137 138static int 139install_pkg_static(const char *path, const char *pkgpath, bool force) 140{ 141 int pstat; 142 pid_t pid; 143 144 switch ((pid = fork())) { 145 case -1: 146 return (-1); 147 case 0: 148 if (force) 149 execl(path, "pkg-static", "add", "-f", pkgpath, 150 (char *)NULL); 151 else 152 execl(path, "pkg-static", "add", pkgpath, 153 (char *)NULL); 154 _exit(1); 155 default: 156 break; 157 } 158 159 while (waitpid(pid, &pstat, 0) == -1) 160 if (errno != EINTR) 161 return (-1); 162 163 if (WEXITSTATUS(pstat)) 164 return (WEXITSTATUS(pstat)); 165 else if (WIFSIGNALED(pstat)) 166 return (128 & (WTERMSIG(pstat))); 167 return (pstat); 168} 169 170static int 171fetch_to_fd(const char *url, char *path) 172{ 173 struct url *u; 174 struct dns_srvinfo *mirrors, *current; 175 struct url_stat st; 176 FILE *remote; 177 /* To store _https._tcp. + hostname + \0 */ 178 int fd; 179 int retry, max_retry; 180 off_t done, r; 181 time_t now, last; 182 char buf[10240]; 183 char zone[MAXHOSTNAMELEN + 13]; 184 static const char *mirror_type = NULL; 185 186 done = 0; 187 last = 0; 188 max_retry = 3; 189 current = mirrors = NULL; 190 remote = NULL; 191 192 if (mirror_type == NULL && config_string(MIRROR_TYPE, &mirror_type) 193 != 0) { 194 warnx("No MIRROR_TYPE defined"); 195 return (-1); 196 } 197 198 if ((fd = mkstemp(path)) == -1) { 199 warn("mkstemp()"); 200 return (-1); 201 } 202 203 retry = max_retry; 204 205 u = fetchParseURL(url); 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 if (remote == NULL) 238 goto fetchfail; 239 240 while (done < st.size) { 241 if ((r = fread(buf, 1, sizeof(buf), remote)) < 1) 242 break; 243 244 if (write(fd, buf, r) != r) { 245 warn("write()"); 246 goto fetchfail; 247 } 248 249 done += r; 250 now = time(NULL); 251 if (now > last || done == st.size) 252 last = now; 253 } 254 255 if (ferror(remote)) 256 goto fetchfail; 257 258 goto cleanup; 259 260fetchfail: 261 if (fd != -1) { 262 close(fd); 263 fd = -1; 264 unlink(path); 265 } 266 267cleanup: 268 if (remote != NULL) 269 fclose(remote); 270 271 return fd; 272} 273 274static struct fingerprint * 275parse_fingerprint(ucl_object_t *obj) 276{ 277 const ucl_object_t *cur; 278 ucl_object_iter_t it = NULL; 279 const char *function, *fp, *key; 280 struct fingerprint *f; 281 hash_t fct = HASH_UNKNOWN; 282 283 function = fp = NULL; 284 285 while ((cur = ucl_iterate_object(obj, &it, true))) { 286 key = ucl_object_key(cur); 287 if (cur->type != UCL_STRING) 288 continue; 289 if (strcasecmp(key, "function") == 0) { 290 function = ucl_object_tostring(cur); 291 continue; 292 } 293 if (strcasecmp(key, "fingerprint") == 0) { 294 fp = ucl_object_tostring(cur); 295 continue; 296 } 297 } 298 299 if (fp == NULL || function == NULL) 300 return (NULL); 301 302 if (strcasecmp(function, "sha256") == 0) 303 fct = HASH_SHA256; 304 305 if (fct == HASH_UNKNOWN) { 306 warnx("Unsupported hashing function: %s", function); 307 return (NULL); 308 } 309 310 f = calloc(1, sizeof(struct fingerprint)); 311 f->type = fct; 312 strlcpy(f->hash, fp, sizeof(f->hash)); 313 314 return (f); 315} 316 317static void 318free_fingerprint_list(struct fingerprint_list* list) 319{ 320 struct fingerprint *fingerprint, *tmp; 321 322 STAILQ_FOREACH_SAFE(fingerprint, list, next, tmp) { 323 if (fingerprint->name) 324 free(fingerprint->name); 325 free(fingerprint); 326 } 327 free(list); 328} 329 330static struct fingerprint * 331load_fingerprint(const char *dir, const char *filename) 332{ 333 ucl_object_t *obj = NULL; 334 struct ucl_parser *p = NULL; 335 struct fingerprint *f; 336 char path[MAXPATHLEN]; 337 338 f = NULL; 339 340 snprintf(path, MAXPATHLEN, "%s/%s", dir, filename); 341 342 p = ucl_parser_new(0); 343 if (!ucl_parser_add_file(p, path)) { 344 warnx("%s: %s", path, ucl_parser_get_error(p)); 345 ucl_parser_free(p); 346 return (NULL); 347 } 348 349 obj = ucl_parser_get_object(p); 350 351 if (obj->type == UCL_OBJECT) 352 f = parse_fingerprint(obj); 353 354 if (f != NULL) 355 f->name = strdup(filename); 356 357 ucl_object_unref(obj); 358 ucl_parser_free(p); 359 360 return (f); 361} 362 363static struct fingerprint_list * 364load_fingerprints(const char *path, int *count) 365{ 366 DIR *d; 367 struct dirent *ent; 368 struct fingerprint *finger; 369 struct fingerprint_list *fingerprints; 370 371 *count = 0; 372 373 fingerprints = calloc(1, sizeof(struct fingerprint_list)); 374 if (fingerprints == NULL) 375 return (NULL); 376 STAILQ_INIT(fingerprints); 377 378 if ((d = opendir(path)) == NULL) 379 return (NULL); 380 381 while ((ent = readdir(d))) { 382 if (strcmp(ent->d_name, ".") == 0 || 383 strcmp(ent->d_name, "..") == 0) 384 continue; 385 finger = load_fingerprint(path, ent->d_name); 386 if (finger != NULL) { 387 STAILQ_INSERT_TAIL(fingerprints, finger, next); 388 ++(*count); 389 } 390 } 391 392 closedir(d); 393 394 return (fingerprints); 395} 396 397static void 398sha256_hash(unsigned char hash[SHA256_DIGEST_LENGTH], 399 char out[SHA256_DIGEST_LENGTH * 2 + 1]) 400{ 401 int i; 402 403 for (i = 0; i < SHA256_DIGEST_LENGTH; i++) 404 sprintf(out + (i * 2), "%02x", hash[i]); 405 406 out[SHA256_DIGEST_LENGTH * 2] = '\0'; 407} 408 409static void 410sha256_buf(char *buf, size_t len, char out[SHA256_DIGEST_LENGTH * 2 + 1]) 411{ 412 unsigned char hash[SHA256_DIGEST_LENGTH]; 413 SHA256_CTX sha256; 414 415 out[0] = '\0'; 416 417 SHA256_Init(&sha256); 418 SHA256_Update(&sha256, buf, len); 419 SHA256_Final(hash, &sha256); 420 sha256_hash(hash, out); 421} 422 423static int 424sha256_fd(int fd, char out[SHA256_DIGEST_LENGTH * 2 + 1]) 425{ 426 int my_fd; 427 FILE *fp; 428 char buffer[BUFSIZ]; 429 unsigned char hash[SHA256_DIGEST_LENGTH]; 430 size_t r; 431 int ret; 432 SHA256_CTX sha256; 433 434 my_fd = -1; 435 fp = NULL; 436 r = 0; 437 ret = 1; 438 439 out[0] = '\0'; 440 441 /* Duplicate the fd so that fclose(3) does not close it. */ 442 if ((my_fd = dup(fd)) == -1) { 443 warnx("dup"); 444 goto cleanup; 445 } 446 447 if ((fp = fdopen(my_fd, "rb")) == NULL) { 448 warnx("fdopen"); 449 goto cleanup; 450 } 451 452 SHA256_Init(&sha256); 453 454 while ((r = fread(buffer, 1, BUFSIZ, fp)) > 0) 455 SHA256_Update(&sha256, buffer, r); 456 457 if (ferror(fp) != 0) { 458 warnx("fread"); 459 goto cleanup; 460 } 461 462 SHA256_Final(hash, &sha256); 463 sha256_hash(hash, out); 464 ret = 0; 465 466cleanup: 467 if (fp != NULL) 468 fclose(fp); 469 else if (my_fd != -1) 470 close(my_fd); 471 (void)lseek(fd, 0, SEEK_SET); 472 473 return (ret); 474} 475 476static EVP_PKEY * 477load_public_key_buf(const unsigned char *cert, int certlen) 478{ 479 EVP_PKEY *pkey; 480 BIO *bp; 481 char errbuf[1024]; 482 483 bp = BIO_new_mem_buf(__DECONST(void *, cert), certlen); 484 485 if ((pkey = PEM_read_bio_PUBKEY(bp, NULL, NULL, NULL)) == NULL) 486 warnx("%s", ERR_error_string(ERR_get_error(), errbuf)); 487 488 BIO_free(bp); 489 490 return (pkey); 491} 492 493static bool 494rsa_verify_cert(int fd, const unsigned char *key, int keylen, 495 unsigned char *sig, int siglen) 496{ 497 EVP_MD_CTX *mdctx; 498 EVP_PKEY *pkey; 499 char sha256[(SHA256_DIGEST_LENGTH * 2) + 2]; 500 char errbuf[1024]; 501 bool ret; 502 503 pkey = NULL; 504 mdctx = NULL; 505 ret = false; 506 507 /* Compute SHA256 of the package. */ 508 if (lseek(fd, 0, 0) == -1) { 509 warn("lseek"); 510 goto cleanup; 511 } 512 if ((sha256_fd(fd, sha256)) == -1) { 513 warnx("Error creating SHA256 hash for package"); 514 goto cleanup; 515 } 516 517 if ((pkey = load_public_key_buf(key, keylen)) == NULL) { 518 warnx("Error reading public key"); 519 goto cleanup; 520 } 521 522 /* Verify signature of the SHA256(pkg) is valid. */ 523 if ((mdctx = EVP_MD_CTX_create()) == NULL) { 524 warnx("%s", ERR_error_string(ERR_get_error(), errbuf)); 525 goto error; 526 } 527 528 if (EVP_DigestVerifyInit(mdctx, NULL, EVP_sha256(), NULL, pkey) != 1) { 529 warnx("%s", ERR_error_string(ERR_get_error(), errbuf)); 530 goto error; 531 } 532 if (EVP_DigestVerifyUpdate(mdctx, sha256, strlen(sha256)) != 1) { 533 warnx("%s", ERR_error_string(ERR_get_error(), errbuf)); 534 goto error; 535 } 536 537 if (EVP_DigestVerifyFinal(mdctx, sig, siglen) != 1) { 538 warnx("%s", ERR_error_string(ERR_get_error(), errbuf)); 539 goto error; 540 } 541 542 ret = true; 543 printf("done\n"); 544 goto cleanup; 545 546error: 547 printf("failed\n"); 548 549cleanup: 550 if (pkey) 551 EVP_PKEY_free(pkey); 552 if (mdctx) 553 EVP_MD_CTX_destroy(mdctx); 554 ERR_free_strings(); 555 556 return (ret); 557} 558 559static struct sig_cert * 560parse_cert(int fd) { 561 int my_fd; 562 struct sig_cert *sc; 563 FILE *fp; 564 struct sbuf *buf, *sig, *cert; 565 char *line; 566 size_t linecap; 567 ssize_t linelen; 568 569 buf = NULL; 570 my_fd = -1; 571 sc = NULL; 572 line = NULL; 573 linecap = 0; 574 575 if (lseek(fd, 0, 0) == -1) { 576 warn("lseek"); 577 return (NULL); 578 } 579 580 /* Duplicate the fd so that fclose(3) does not close it. */ 581 if ((my_fd = dup(fd)) == -1) { 582 warnx("dup"); 583 return (NULL); 584 } 585 586 if ((fp = fdopen(my_fd, "rb")) == NULL) { 587 warn("fdopen"); 588 close(my_fd); 589 return (NULL); 590 } 591 592 sig = sbuf_new_auto(); 593 cert = sbuf_new_auto(); 594 595 while ((linelen = getline(&line, &linecap, fp)) > 0) { 596 if (strcmp(line, "SIGNATURE\n") == 0) { 597 buf = sig; 598 continue; 599 } else if (strcmp(line, "CERT\n") == 0) { 600 buf = cert; 601 continue; 602 } else if (strcmp(line, "END\n") == 0) { 603 break; 604 } 605 if (buf != NULL) 606 sbuf_bcat(buf, line, linelen); 607 } 608 609 fclose(fp); 610 611 /* Trim out unrelated trailing newline */ 612 sbuf_setpos(sig, sbuf_len(sig) - 1); 613 614 sbuf_finish(sig); 615 sbuf_finish(cert); 616 617 sc = calloc(1, sizeof(struct sig_cert)); 618 sc->siglen = sbuf_len(sig); 619 sc->sig = calloc(1, sc->siglen); 620 memcpy(sc->sig, sbuf_data(sig), sc->siglen); 621 622 sc->certlen = sbuf_len(cert); 623 sc->cert = strdup(sbuf_data(cert)); 624 625 sbuf_delete(sig); 626 sbuf_delete(cert); 627 628 return (sc); 629} 630 631static bool 632verify_signature(int fd_pkg, int fd_sig) 633{ 634 struct fingerprint_list *trusted, *revoked; 635 struct fingerprint *fingerprint; 636 struct sig_cert *sc; 637 bool ret; 638 int trusted_count, revoked_count; 639 const char *fingerprints; 640 char path[MAXPATHLEN]; 641 char hash[SHA256_DIGEST_LENGTH * 2 + 1]; 642 643 sc = NULL; 644 trusted = revoked = NULL; 645 ret = false; 646 647 /* Read and parse fingerprints. */ 648 if (config_string(FINGERPRINTS, &fingerprints) != 0) { 649 warnx("No CONFIG_FINGERPRINTS defined"); 650 goto cleanup; 651 } 652 653 snprintf(path, MAXPATHLEN, "%s/trusted", fingerprints); 654 if ((trusted = load_fingerprints(path, &trusted_count)) == NULL) { 655 warnx("Error loading trusted certificates"); 656 goto cleanup; 657 } 658 659 if (trusted_count == 0 || trusted == NULL) { 660 fprintf(stderr, "No trusted certificates found.\n"); 661 goto cleanup; 662 } 663 664 snprintf(path, MAXPATHLEN, "%s/revoked", fingerprints); 665 if ((revoked = load_fingerprints(path, &revoked_count)) == NULL) { 666 warnx("Error loading revoked certificates"); 667 goto cleanup; 668 } 669 670 /* Read certificate and signature in. */ 671 if ((sc = parse_cert(fd_sig)) == NULL) { 672 warnx("Error parsing certificate"); 673 goto cleanup; 674 } 675 /* Explicitly mark as non-trusted until proven otherwise. */ 676 sc->trusted = false; 677 678 /* Parse signature and pubkey out of the certificate */ 679 sha256_buf(sc->cert, sc->certlen, hash); 680 681 /* Check if this hash is revoked */ 682 if (revoked != NULL) { 683 STAILQ_FOREACH(fingerprint, revoked, next) { 684 if (strcasecmp(fingerprint->hash, hash) == 0) { 685 fprintf(stderr, "The package was signed with " 686 "revoked certificate %s\n", 687 fingerprint->name); 688 goto cleanup; 689 } 690 } 691 } 692 693 STAILQ_FOREACH(fingerprint, trusted, next) { 694 if (strcasecmp(fingerprint->hash, hash) == 0) { 695 sc->trusted = true; 696 sc->name = strdup(fingerprint->name); 697 break; 698 } 699 } 700 701 if (sc->trusted == false) { 702 fprintf(stderr, "No trusted fingerprint found matching " 703 "package's certificate\n"); 704 goto cleanup; 705 } 706 707 /* Verify the signature. */ 708 printf("Verifying signature with trusted certificate %s... ", sc->name); 709 if (rsa_verify_cert(fd_pkg, sc->cert, sc->certlen, sc->sig, 710 sc->siglen) == false) { 711 fprintf(stderr, "Signature is not valid\n"); 712 goto cleanup; 713 } 714 715 ret = true; 716 717cleanup: 718 if (trusted) 719 free_fingerprint_list(trusted); 720 if (revoked) 721 free_fingerprint_list(revoked); 722 if (sc) { 723 if (sc->cert) 724 free(sc->cert); 725 if (sc->sig) 726 free(sc->sig); 727 if (sc->name) 728 free(sc->name); 729 free(sc); 730 } 731 732 return (ret); 733} 734 735static int 736bootstrap_pkg(bool force) 737{ 738 int fd_pkg, fd_sig; 739 int ret; 740 char url[MAXPATHLEN]; 741 char tmppkg[MAXPATHLEN]; 742 char tmpsig[MAXPATHLEN]; 743 const char *packagesite; 744 const char *signature_type; 745 char pkgstatic[MAXPATHLEN]; 746 747 fd_sig = -1; 748 ret = -1; 749 750 if (config_string(PACKAGESITE, &packagesite) != 0) { 751 warnx("No PACKAGESITE defined"); 752 return (-1); 753 } 754 755 if (config_string(SIGNATURE_TYPE, &signature_type) != 0) { 756 warnx("Error looking up SIGNATURE_TYPE"); 757 return (-1); 758 } 759 760 printf("Bootstrapping pkg from %s, please wait...\n", packagesite); 761 762 /* Support pkg+http:// for PACKAGESITE which is the new format 763 in 1.2 to avoid confusion on why http://pkg.FreeBSD.org has 764 no A record. */ 765 if (strncmp(URL_SCHEME_PREFIX, packagesite, 766 strlen(URL_SCHEME_PREFIX)) == 0) 767 packagesite += strlen(URL_SCHEME_PREFIX); 768 snprintf(url, MAXPATHLEN, "%s/Latest/pkg.txz", packagesite); 769 770 snprintf(tmppkg, MAXPATHLEN, "%s/pkg.txz.XXXXXX", 771 getenv("TMPDIR") ? getenv("TMPDIR") : _PATH_TMP); 772 773 if ((fd_pkg = fetch_to_fd(url, tmppkg)) == -1) 774 goto fetchfail; 775 776 if (signature_type != NULL && 777 strcasecmp(signature_type, "NONE") != 0) { 778 if (strcasecmp(signature_type, "FINGERPRINTS") != 0) { 779 warnx("Signature type %s is not supported for " 780 "bootstrapping.", signature_type); 781 goto cleanup; 782 } 783 784 snprintf(tmpsig, MAXPATHLEN, "%s/pkg.txz.sig.XXXXXX", 785 getenv("TMPDIR") ? getenv("TMPDIR") : _PATH_TMP); 786 snprintf(url, MAXPATHLEN, "%s/Latest/pkg.txz.sig", 787 packagesite); 788 789 if ((fd_sig = fetch_to_fd(url, tmpsig)) == -1) { 790 fprintf(stderr, "Signature for pkg not available.\n"); 791 goto fetchfail; 792 } 793 794 if (verify_signature(fd_pkg, fd_sig) == false) 795 goto cleanup; 796 } 797 798 if ((ret = extract_pkg_static(fd_pkg, pkgstatic, MAXPATHLEN)) == 0) 799 ret = install_pkg_static(pkgstatic, tmppkg, force); 800 801 goto cleanup; 802 803fetchfail: 804 warnx("Error fetching %s: %s", url, fetchLastErrString); 805 fprintf(stderr, "A pre-built version of pkg could not be found for " 806 "your system.\n"); 807 fprintf(stderr, "Consider changing PACKAGESITE or installing it from " 808 "ports: 'ports-mgmt/pkg'.\n"); 809 810cleanup: 811 if (fd_sig != -1) { 812 close(fd_sig); 813 unlink(tmpsig); 814 } 815 close(fd_pkg); 816 unlink(tmppkg); 817 818 return (ret); 819} 820 821static const char confirmation_message[] = 822"The package management tool is not yet installed on your system.\n" 823"Do you want to fetch and install it now? [y/N]: "; 824 825static int 826pkg_query_yes_no(void) 827{ 828 int ret, c; 829 830 c = getchar(); 831 832 if (c == 'y' || c == 'Y') 833 ret = 1; 834 else 835 ret = 0; 836 837 while (c != '\n' && c != EOF) 838 c = getchar(); 839 840 return (ret); 841} 842 843static int 844bootstrap_pkg_local(const char *pkgpath, bool force) 845{ 846 char path[MAXPATHLEN]; 847 char pkgstatic[MAXPATHLEN]; 848 const char *signature_type; 849 int fd_pkg, fd_sig, ret; 850 851 fd_sig = -1; 852 ret = -1; 853 854 fd_pkg = open(pkgpath, O_RDONLY); 855 if (fd_pkg == -1) 856 err(EXIT_FAILURE, "Unable to open %s", pkgpath); 857 858 if (config_string(SIGNATURE_TYPE, &signature_type) != 0) { 859 warnx("Error looking up SIGNATURE_TYPE"); 860 return (-1); 861 } 862 if (signature_type != NULL && 863 strcasecmp(signature_type, "NONE") != 0) { 864 if (strcasecmp(signature_type, "FINGERPRINTS") != 0) { 865 warnx("Signature type %s is not supported for " 866 "bootstrapping.", signature_type); 867 goto cleanup; 868 } 869 870 snprintf(path, sizeof(path), "%s.sig", pkgpath); 871 872 if ((fd_sig = open(path, O_RDONLY)) == -1) { 873 fprintf(stderr, "Signature for pkg not available.\n"); 874 goto cleanup; 875 } 876 877 if (verify_signature(fd_pkg, fd_sig) == false) 878 goto cleanup; 879 } 880 881 if ((ret = extract_pkg_static(fd_pkg, pkgstatic, MAXPATHLEN)) == 0) 882 ret = install_pkg_static(pkgstatic, pkgpath, force); 883 884cleanup: 885 close(fd_pkg); 886 if (fd_sig != -1) 887 close(fd_sig); 888 889 return (ret); 890} 891 892int 893main(__unused int argc, char *argv[]) 894{ 895 char pkgpath[MAXPATHLEN]; 896 const char *pkgarg; 897 bool bootstrap_only, force, yes; 898 899 bootstrap_only = false; 900 force = false; 901 pkgarg = NULL; 902 yes = false; 903 904 snprintf(pkgpath, MAXPATHLEN, "%s/sbin/pkg", 905 getenv("LOCALBASE") ? getenv("LOCALBASE") : _LOCALBASE); 906 907 if (argc > 1 && strcmp(argv[1], "bootstrap") == 0) { 908 bootstrap_only = true; 909 if (argc == 3 && strcmp(argv[2], "-f") == 0) 910 force = true; 911 } 912 913 if ((bootstrap_only && force) || access(pkgpath, X_OK) == -1) { 914 /* 915 * To allow 'pkg -N' to be used as a reliable test for whether 916 * a system is configured to use pkg, don't bootstrap pkg 917 * when that argument is given as argv[1]. 918 */ 919 if (argv[1] != NULL && strcmp(argv[1], "-N") == 0) 920 errx(EXIT_FAILURE, "pkg is not installed"); 921 922 config_init(); 923 924 if (argc > 1 && strcmp(argv[1], "add") == 0) { 925 if (argc > 2 && strcmp(argv[2], "-f") == 0) { 926 force = true; 927 pkgarg = argv[3]; 928 } else 929 pkgarg = argv[2]; 930 if (pkgarg == NULL) { 931 fprintf(stderr, "Path to pkg.txz required\n"); 932 exit(EXIT_FAILURE); 933 } 934 if (access(pkgarg, R_OK) == -1) { 935 fprintf(stderr, "No such file: %s\n", pkgarg); 936 exit(EXIT_FAILURE); 937 } 938 if (bootstrap_pkg_local(pkgarg, force) != 0) 939 exit(EXIT_FAILURE); 940 exit(EXIT_SUCCESS); 941 } 942 /* 943 * Do not ask for confirmation if either of stdin or stdout is 944 * not tty. Check the environment to see if user has answer 945 * tucked in there already. 946 */ 947 config_bool(ASSUME_ALWAYS_YES, &yes); 948 if (!yes) { 949 printf("%s", confirmation_message); 950 if (!isatty(fileno(stdin))) 951 exit(EXIT_FAILURE); 952 953 if (pkg_query_yes_no() == 0) 954 exit(EXIT_FAILURE); 955 } 956 if (bootstrap_pkg(force) != 0) 957 exit(EXIT_FAILURE); 958 config_finish(); 959 960 if (bootstrap_only) 961 exit(EXIT_SUCCESS); 962 } else if (bootstrap_only) { 963 printf("pkg already bootstrapped at %s\n", pkgpath); 964 exit(EXIT_SUCCESS); 965 } 966 967 execv(pkgpath, argv); 968 969 /* NOT REACHED */ 970 return (EXIT_FAILURE); 971} 972