1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2003-2008 Tim Kientzle 5 * All rights reserved. 6 */ 7 8 #include "bsdtar_platform.h" 9 10 #ifdef HAVE_SYS_PARAM_H 11 #include <sys/param.h> 12 #endif 13 #ifdef HAVE_SYS_STAT_H 14 #include <sys/stat.h> 15 #endif 16 #ifdef HAVE_COPYFILE_H 17 #include <copyfile.h> 18 #endif 19 #ifdef HAVE_ERRNO_H 20 #include <errno.h> 21 #endif 22 #ifdef HAVE_FCNTL_H 23 #include <fcntl.h> 24 #endif 25 #ifdef HAVE_LANGINFO_H 26 #include <langinfo.h> 27 #endif 28 #ifdef HAVE_LIMITS_H 29 #include <limits.h> 30 #endif 31 #ifdef HAVE_LOCALE_H 32 #include <locale.h> 33 #endif 34 #ifdef HAVE_PATHS_H 35 #include <paths.h> 36 #endif 37 #ifdef HAVE_SIGNAL_H 38 #include <signal.h> 39 #endif 40 #include <stdio.h> 41 #ifdef HAVE_STDLIB_H 42 #include <stdlib.h> 43 #endif 44 #ifdef HAVE_STRING_H 45 #include <string.h> 46 #endif 47 #ifdef HAVE_TIME_H 48 #include <time.h> 49 #endif 50 #ifdef HAVE_UNISTD_H 51 #include <unistd.h> 52 #endif 53 54 #include "bsdtar.h" 55 #include "err.h" 56 57 #if ARCHIVE_VERSION_NUMBER < 4000000 && !defined(_PATH_DEFTAPE) 58 // Libarchive 4.0 and later will NOT define _PATH_DEFTAPE 59 // but will honor it if it's set in the build. 60 // Until then, we'll continue to set it by default on certain platforms: 61 #if defined(__linux) 62 #define _PATH_DEFTAPE "/dev/st0" 63 #elif defined(_WIN32) && !defined(__CYGWIN__) 64 #define _PATH_DEFTAPE "\\\\.\\tape0" 65 #elif !defined(__APPLE__) 66 #define _PATH_DEFTAPE "/dev/tape" 67 #endif 68 #endif 69 70 #define _PATH_STDIO "-" 71 72 #ifdef __MINGW32__ 73 int _CRT_glob = 0; /* Disable broken CRT globbing. */ 74 #endif 75 76 #if defined(HAVE_SIGACTION) && (defined(SIGINFO) || defined(SIGUSR1)) 77 static volatile int siginfo_occurred; 78 79 static void 80 siginfo_handler(int sig) 81 { 82 (void)sig; /* UNUSED */ 83 siginfo_occurred = 1; 84 } 85 86 int 87 need_report(void) 88 { 89 int r = siginfo_occurred; 90 siginfo_occurred = 0; 91 return (r); 92 } 93 #else 94 int 95 need_report(void) 96 { 97 return (0); 98 } 99 #endif 100 101 static __LA_NORETURN void long_help(void); 102 static void only_mode(struct bsdtar *, const char *opt, 103 const char *valid); 104 static void set_mode(struct bsdtar *, char opt); 105 static __LA_NORETURN void version(void); 106 107 /* A basic set of security flags to request from libarchive. */ 108 #define SECURITY \ 109 (ARCHIVE_EXTRACT_SECURE_SYMLINKS \ 110 | ARCHIVE_EXTRACT_SECURE_NODOTDOT) 111 112 static char const * const vcs_files[] = { 113 /* CVS */ 114 "CVS", ".cvsignore", 115 /* RCS */ 116 "RCS", 117 /* SCCS */ 118 "SCCS", 119 /* SVN */ 120 ".svn", 121 /* git */ 122 ".git", ".gitignore", ".gitattributes", ".gitmodules", 123 /* Arch */ 124 ".arch-ids", "{arch}", "=RELEASE-ID", "=meta-update", "=update", 125 /* Bazaar */ 126 ".bzr", ".bzrignore", ".bzrtags", 127 /* Mercurial */ 128 ".hg", ".hgignore", ".hgtags", 129 /* darcs */ 130 "_darcs", 131 NULL 132 }; 133 134 int 135 main(int argc, char **argv) 136 { 137 struct bsdtar *bsdtar, bsdtar_storage; 138 int opt, t; 139 char compression, compression2; 140 const char *compression_name, *compression2_name; 141 const char *compress_program; 142 char *tptr, *uptr; 143 char possible_help_request; 144 char buff[16]; 145 long l; 146 147 /* 148 * Use a pointer for consistency, but stack-allocated storage 149 * for ease of cleanup. 150 */ 151 bsdtar = &bsdtar_storage; 152 memset(bsdtar, 0, sizeof(*bsdtar)); 153 bsdtar->fd = -1; /* Mark as "unused" */ 154 bsdtar->gid = -1; 155 bsdtar->uid = -1; 156 bsdtar->flags = 0; 157 compression = compression2 = '\0'; 158 compression_name = compression2_name = NULL; 159 compress_program = NULL; 160 161 #if defined(HAVE_SIGACTION) 162 { /* Set up signal handling. */ 163 struct sigaction sa; 164 sa.sa_handler = siginfo_handler; 165 sigemptyset(&sa.sa_mask); 166 sa.sa_flags = 0; 167 #ifdef SIGINFO 168 if (sigaction(SIGINFO, &sa, NULL)) 169 lafe_errc(1, errno, "sigaction(SIGINFO) failed"); 170 #endif 171 #ifdef SIGUSR1 172 /* ... and treat SIGUSR1 the same way as SIGINFO. */ 173 if (sigaction(SIGUSR1, &sa, NULL)) 174 lafe_errc(1, errno, "sigaction(SIGUSR1) failed"); 175 #endif 176 #ifdef SIGPIPE 177 /* Ignore SIGPIPE signals. */ 178 sa.sa_handler = SIG_IGN; 179 sigaction(SIGPIPE, &sa, NULL); 180 #endif 181 } 182 #endif 183 184 /* Set lafe_progname before calling lafe_warnc. */ 185 lafe_setprogname(*argv, "bsdtar"); 186 187 #if HAVE_SETLOCALE 188 if (setlocale(LC_ALL, "") == NULL) 189 lafe_warnc(0, "Failed to set default locale"); 190 #endif 191 #if defined(HAVE_NL_LANGINFO) && defined(HAVE_D_MD_ORDER) 192 bsdtar->day_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 193 #endif 194 possible_help_request = 0; 195 196 /* Look up uid of current user for future reference */ 197 bsdtar->user_uid = geteuid(); 198 199 /* Default: open tape drive. */ 200 bsdtar->filename = getenv("TAPE"); 201 #if defined(_PATH_DEFTAPE) 202 if (bsdtar->filename == NULL) { 203 #if defined(_WIN32) && !defined(__CYGWIN__) 204 int tapeExists = !_access(_PATH_DEFTAPE, 0); 205 #else 206 int tapeExists = !access(_PATH_DEFTAPE, F_OK); 207 #endif 208 if (tapeExists) { 209 bsdtar->filename = _PATH_DEFTAPE; 210 } 211 } 212 #endif 213 if (bsdtar->filename == NULL) { 214 bsdtar->filename = _PATH_STDIO; 215 } 216 217 /* Default block size settings. */ 218 bsdtar->bytes_per_block = DEFAULT_BYTES_PER_BLOCK; 219 /* Allow library to default this unless user specifies -b. */ 220 bsdtar->bytes_in_last_block = -1; 221 222 /* Default: preserve mod time on extract */ 223 bsdtar->extract_flags = ARCHIVE_EXTRACT_TIME; 224 225 /* Default: Perform basic security checks. */ 226 bsdtar->extract_flags |= SECURITY; 227 228 #ifndef _WIN32 229 /* On POSIX systems, assume --same-owner and -p when run by 230 * the root user. This doesn't make any sense on Windows. */ 231 if (bsdtar->user_uid == 0) { 232 /* --same-owner */ 233 bsdtar->extract_flags |= ARCHIVE_EXTRACT_OWNER; 234 /* -p */ 235 bsdtar->extract_flags |= ARCHIVE_EXTRACT_PERM; 236 bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL; 237 bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR; 238 bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS; 239 bsdtar->extract_flags |= ARCHIVE_EXTRACT_MAC_METADATA; 240 } 241 #endif 242 243 /* 244 * Enable Mac OS "copyfile()" extension by default. 245 * This has no effect on other platforms. 246 */ 247 bsdtar->readdisk_flags |= ARCHIVE_READDISK_MAC_COPYFILE; 248 #ifdef COPYFILE_DISABLE_VAR 249 if (getenv(COPYFILE_DISABLE_VAR)) 250 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_MAC_COPYFILE; 251 #endif 252 #if defined(__APPLE__) 253 /* 254 * On Mac OS ACLs are archived with copyfile() (--mac-metadata) 255 * Translation to NFSv4 ACLs has to be requested explicitly with --acls 256 */ 257 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_ACL; 258 #endif 259 260 bsdtar->matching = archive_match_new(); 261 if (bsdtar->matching == NULL) 262 lafe_errc(1, errno, "Out of memory"); 263 bsdtar->cset = cset_new(); 264 if (bsdtar->cset == NULL) 265 lafe_errc(1, errno, "Out of memory"); 266 267 bsdtar->argv = argv; 268 bsdtar->argc = argc; 269 270 /* 271 * Comments following each option indicate where that option 272 * originated: SUSv2, POSIX, GNU tar, star, etc. If there's 273 * no such comment, then I don't know of anyone else who 274 * implements that option. 275 */ 276 while ((opt = bsdtar_getopt(bsdtar)) != -1) { 277 switch (opt) { 278 case 'a': /* GNU tar */ 279 bsdtar->flags |= OPTFLAG_AUTO_COMPRESS; 280 break; 281 case OPTION_ACLS: /* GNU tar */ 282 bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL; 283 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_NO_ACL; 284 bsdtar->flags |= OPTFLAG_ACLS; 285 break; 286 case 'B': /* GNU tar */ 287 /* libarchive doesn't need this; just ignore it. */ 288 break; 289 case 'b': /* SUSv2 */ 290 tptr = NULL; 291 l = strtol(bsdtar->argument, &tptr, 10); 292 if (l <= 0 || l > 8192L || 293 *(bsdtar->argument) == '\0' || tptr == NULL || 294 *tptr != '\0') { 295 lafe_errc(1, 0, "Invalid or out of range " 296 "(1..8192) argument to -b"); 297 } 298 bsdtar->bytes_per_block = 512 * (int)l; 299 /* Explicit -b forces last block size. */ 300 bsdtar->bytes_in_last_block = bsdtar->bytes_per_block; 301 break; 302 case OPTION_B64ENCODE: 303 if (compression2 != '\0') 304 lafe_errc(1, 0, 305 "Can't specify both --uuencode and " 306 "--b64encode"); 307 compression2 = opt; 308 compression2_name = "b64encode"; 309 break; 310 case 'C': /* GNU tar */ 311 if (strlen(bsdtar->argument) == 0) 312 lafe_errc(1, 0, 313 "Meaningless option: -C ''"); 314 315 set_chdir(bsdtar, bsdtar->argument); 316 break; 317 case 'c': /* SUSv2 */ 318 set_mode(bsdtar, opt); 319 break; 320 case OPTION_CHECK_LINKS: /* GNU tar */ 321 bsdtar->flags |= OPTFLAG_WARN_LINKS; 322 break; 323 case OPTION_CHROOT: /* NetBSD */ 324 bsdtar->flags |= OPTFLAG_CHROOT; 325 break; 326 case OPTION_CLEAR_NOCHANGE_FFLAGS: 327 bsdtar->extract_flags |= 328 ARCHIVE_EXTRACT_CLEAR_NOCHANGE_FFLAGS; 329 break; 330 case OPTION_EXCLUDE: /* GNU tar */ 331 if (archive_match_exclude_pattern( 332 bsdtar->matching, bsdtar->argument) != ARCHIVE_OK) 333 lafe_errc(1, 0, 334 "Couldn't exclude %s\n", bsdtar->argument); 335 break; 336 case OPTION_EXCLUDE_VCS: /* GNU tar */ 337 for(t=0; vcs_files[t]; t++) { 338 if (archive_match_exclude_pattern( 339 bsdtar->matching, 340 vcs_files[t]) != ARCHIVE_OK) 341 lafe_errc(1, 0, "Couldn't " 342 "exclude %s\n", vcs_files[t]); 343 } 344 break; 345 case OPTION_FFLAGS: 346 bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS; 347 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_NO_FFLAGS; 348 bsdtar->flags |= OPTFLAG_FFLAGS; 349 break; 350 case OPTION_FORMAT: /* GNU tar, others */ 351 cset_set_format(bsdtar->cset, bsdtar->argument); 352 break; 353 case 'f': /* SUSv2 */ 354 bsdtar->filename = bsdtar->argument; 355 break; 356 case OPTION_GID: /* cpio */ 357 tptr = NULL; 358 l = strtol(bsdtar->argument, &tptr, 10); 359 if (l < 0 || l >= INT_MAX || *(bsdtar->argument) == '\0' || 360 tptr == NULL || *tptr != '\0') { 361 lafe_errc(1, 0, "Invalid argument to --gid"); 362 } 363 bsdtar->gid = (int)l; 364 break; 365 case OPTION_GNAME: /* cpio */ 366 bsdtar->gname = bsdtar->argument; 367 break; 368 case OPTION_GROUP: /* GNU tar */ 369 tptr = NULL; 370 371 uptr = strchr(bsdtar->argument, ':'); 372 if (uptr != NULL) { 373 if (uptr[1] == '\0') { 374 lafe_errc(1, 0, "Invalid argument to --group (missing id after :)"); 375 } 376 uptr[0] = 0; 377 uptr++; 378 l = strtol(uptr, &tptr, 10); 379 if (l < 0 || l >= INT_MAX || *uptr == '\0' || 380 tptr == NULL || *tptr != '\0') { 381 lafe_errc(1, 0, "Invalid argument to --group (%s is not a number)", uptr); 382 } else { 383 bsdtar->gid = (int)l; 384 } 385 bsdtar->gname = bsdtar->argument; 386 } else { 387 l = strtol(bsdtar->argument, &tptr, 10); 388 if (l < 0 || l >= INT_MAX || *(bsdtar->argument) == '\0' || 389 tptr == NULL || *tptr != '\0') { 390 bsdtar->gname = bsdtar->argument; 391 } else { 392 bsdtar->gid = (int)l; 393 bsdtar->gname = ""; 394 } 395 } 396 break; 397 case OPTION_GRZIP: 398 if (compression != '\0') 399 lafe_errc(1, 0, 400 "Can't specify both -%c and -%c", opt, 401 compression); 402 compression = opt; 403 compression_name = "grzip"; 404 break; 405 case 'H': /* BSD convention */ 406 bsdtar->symlink_mode = 'H'; 407 break; 408 case 'h': /* Linux Standards Base, gtar; synonym for -L */ 409 bsdtar->symlink_mode = 'L'; 410 /* Hack: -h by itself is the "help" command. */ 411 possible_help_request = 1; 412 break; 413 case OPTION_HELP: /* GNU tar, others */ 414 long_help(); 415 /* NOTREACHED*/ 416 case OPTION_HFS_COMPRESSION: /* Mac OS X v10.6 or later */ 417 bsdtar->extract_flags |= 418 ARCHIVE_EXTRACT_HFS_COMPRESSION_FORCED; 419 break; 420 case OPTION_IGNORE_ZEROS: 421 bsdtar->flags |= OPTFLAG_IGNORE_ZEROS; 422 break; 423 case 'I': /* GNU tar */ 424 /* 425 * TODO: Allow 'names' to come from an archive, 426 * not just a text file. Design a good UI for 427 * allowing names and mode/owner to be read 428 * from an archive, with contents coming from 429 * disk. This can be used to "refresh" an 430 * archive or to design archives with special 431 * permissions without having to create those 432 * permissions on disk. 433 */ 434 bsdtar->names_from_file = bsdtar->argument; 435 break; 436 case OPTION_INCLUDE: 437 /* 438 * No one else has the @archive extension, so 439 * no one else needs this to filter entries 440 * when transforming archives. 441 */ 442 if (archive_match_include_pattern(bsdtar->matching, 443 bsdtar->argument) != ARCHIVE_OK) 444 lafe_errc(1, 0, 445 "Failed to add %s to inclusion list", 446 bsdtar->argument); 447 break; 448 case 'j': /* GNU tar */ 449 if (compression != '\0') 450 lafe_errc(1, 0, 451 "Can't specify both -%c and -%c", opt, 452 compression); 453 compression = opt; 454 compression_name = "bzip2"; 455 break; 456 case 'J': /* GNU tar 1.21 and later */ 457 if (compression != '\0') 458 lafe_errc(1, 0, 459 "Can't specify both -%c and -%c", opt, 460 compression); 461 compression = opt; 462 compression_name = "xz"; 463 break; 464 case 'k': /* GNU tar */ 465 bsdtar->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE; 466 break; 467 case OPTION_KEEP_NEWER_FILES: /* GNU tar */ 468 bsdtar->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER; 469 break; 470 case 'L': /* BSD convention */ 471 bsdtar->symlink_mode = 'L'; 472 break; 473 case 'l': /* SUSv2 and GNU tar beginning with 1.16 */ 474 /* GNU tar 1.13 used -l for --one-file-system */ 475 bsdtar->flags |= OPTFLAG_WARN_LINKS; 476 break; 477 case OPTION_LRZIP: 478 case OPTION_LZ4: 479 case OPTION_LZIP: /* GNU tar beginning with 1.23 */ 480 case OPTION_LZMA: /* GNU tar beginning with 1.20 */ 481 case OPTION_LZOP: /* GNU tar beginning with 1.21 */ 482 case OPTION_ZSTD: 483 if (compression != '\0') 484 lafe_errc(1, 0, 485 "Can't specify both -%c and -%c", opt, 486 compression); 487 compression = opt; 488 switch (opt) { 489 case OPTION_LRZIP: compression_name = "lrzip"; break; 490 case OPTION_LZ4: compression_name = "lz4"; break; 491 case OPTION_LZIP: compression_name = "lzip"; break; 492 case OPTION_LZMA: compression_name = "lzma"; break; 493 case OPTION_LZOP: compression_name = "lzop"; break; 494 case OPTION_ZSTD: compression_name = "zstd"; break; 495 } 496 break; 497 case 'm': /* SUSv2 */ 498 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_TIME; 499 break; 500 case OPTION_MAC_METADATA: /* Mac OS X */ 501 bsdtar->readdisk_flags |= ARCHIVE_READDISK_MAC_COPYFILE; 502 bsdtar->extract_flags |= ARCHIVE_EXTRACT_MAC_METADATA; 503 bsdtar->flags |= OPTFLAG_MAC_METADATA; 504 break; 505 case 'n': /* GNU tar */ 506 bsdtar->flags |= OPTFLAG_NO_SUBDIRS; 507 break; 508 /* 509 * Selecting files by time: 510 * --newer-?time='date' Only files newer than 'date' 511 * --newer-?time-than='file' Only files newer than time 512 * on specified file (useful for incremental backups) 513 */ 514 case OPTION_NEWER_CTIME: /* GNU tar */ 515 if (archive_match_include_date(bsdtar->matching, 516 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_NEWER, 517 bsdtar->argument) != ARCHIVE_OK) 518 lafe_errc(1, 0, "Error : %s", 519 archive_error_string(bsdtar->matching)); 520 break; 521 case OPTION_NEWER_CTIME_THAN: 522 if (archive_match_include_file_time(bsdtar->matching, 523 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_NEWER, 524 bsdtar->argument) != ARCHIVE_OK) 525 lafe_errc(1, 0, "Error : %s", 526 archive_error_string(bsdtar->matching)); 527 break; 528 case OPTION_NEWER_MTIME: /* GNU tar */ 529 if (archive_match_include_date(bsdtar->matching, 530 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_NEWER, 531 bsdtar->argument) != ARCHIVE_OK) 532 lafe_errc(1, 0, "Error : %s", 533 archive_error_string(bsdtar->matching)); 534 break; 535 case OPTION_NEWER_MTIME_THAN: 536 if (archive_match_include_file_time(bsdtar->matching, 537 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_NEWER, 538 bsdtar->argument) != ARCHIVE_OK) 539 lafe_errc(1, 0, "Error : %s", 540 archive_error_string(bsdtar->matching)); 541 break; 542 case OPTION_NODUMP: /* star */ 543 bsdtar->readdisk_flags |= ARCHIVE_READDISK_HONOR_NODUMP; 544 break; 545 case OPTION_NOPRESERVE_HFS_COMPRESSION: 546 /* Mac OS X v10.6 or later */ 547 bsdtar->extract_flags |= 548 ARCHIVE_EXTRACT_NO_HFS_COMPRESSION; 549 break; 550 case OPTION_NO_ACLS: /* GNU tar */ 551 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_ACL; 552 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_ACL; 553 bsdtar->flags |= OPTFLAG_NO_ACLS; 554 break; 555 case OPTION_NO_FFLAGS: 556 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_FFLAGS; 557 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_FFLAGS; 558 bsdtar->flags |= OPTFLAG_NO_FFLAGS; 559 break; 560 case OPTION_NO_MAC_METADATA: /* Mac OS X */ 561 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_MAC_COPYFILE; 562 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_MAC_METADATA; 563 bsdtar->flags |= OPTFLAG_NO_MAC_METADATA; 564 break; 565 case OPTION_NO_READ_SPARSE: 566 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_SPARSE; 567 bsdtar->flags |= OPTFLAG_NO_READ_SPARSE; 568 break; 569 case OPTION_NO_SAFE_WRITES: 570 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_SAFE_WRITES; 571 break; 572 case OPTION_NO_SAME_OWNER: /* GNU tar */ 573 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_OWNER; 574 break; 575 case OPTION_NO_SAME_PERMISSIONS: /* GNU tar */ 576 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_PERM; 577 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_ACL; 578 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_XATTR; 579 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_FFLAGS; 580 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_MAC_METADATA; 581 break; 582 case OPTION_NO_XATTRS: /* GNU tar */ 583 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_XATTR; 584 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_XATTR; 585 bsdtar->flags |= OPTFLAG_NO_XATTRS; 586 break; 587 case OPTION_NULL: /* GNU tar */ 588 bsdtar->flags |= OPTFLAG_NULL; 589 break; 590 case OPTION_NUMERIC_OWNER: /* GNU tar */ 591 bsdtar->uname = ""; 592 bsdtar->gname = ""; 593 bsdtar->flags |= OPTFLAG_NUMERIC_OWNER; 594 break; 595 case 'O': /* GNU tar */ 596 bsdtar->flags |= OPTFLAG_STDOUT; 597 break; 598 case 'o': /* SUSv2 and GNU conflict here, but not fatally */ 599 bsdtar->flags |= OPTFLAG_O; 600 break; 601 /* 602 * Selecting files by time: 603 * --older-?time='date' Only files older than 'date' 604 * --older-?time-than='file' Only files older than time 605 * on specified file 606 */ 607 case OPTION_OLDER_CTIME: 608 if (archive_match_include_date(bsdtar->matching, 609 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_OLDER, 610 bsdtar->argument) != ARCHIVE_OK) 611 lafe_errc(1, 0, "Error : %s", 612 archive_error_string(bsdtar->matching)); 613 break; 614 case OPTION_OLDER_CTIME_THAN: 615 if (archive_match_include_file_time(bsdtar->matching, 616 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_OLDER, 617 bsdtar->argument) != ARCHIVE_OK) 618 lafe_errc(1, 0, "Error : %s", 619 archive_error_string(bsdtar->matching)); 620 break; 621 case OPTION_OLDER_MTIME: 622 if (archive_match_include_date(bsdtar->matching, 623 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_OLDER, 624 bsdtar->argument) != ARCHIVE_OK) 625 lafe_errc(1, 0, "Error : %s", 626 archive_error_string(bsdtar->matching)); 627 break; 628 case OPTION_OLDER_MTIME_THAN: 629 if (archive_match_include_file_time(bsdtar->matching, 630 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_OLDER, 631 bsdtar->argument) != ARCHIVE_OK) 632 lafe_errc(1, 0, "Error : %s", 633 archive_error_string(bsdtar->matching)); 634 break; 635 case OPTION_ONE_FILE_SYSTEM: /* GNU tar */ 636 bsdtar->readdisk_flags |= 637 ARCHIVE_READDISK_NO_TRAVERSE_MOUNTS; 638 break; 639 case OPTION_OPTIONS: 640 if (bsdtar->option_options != NULL) { 641 lafe_warnc(0, 642 "Ignoring previous option '%s', separate multiple options with commas", 643 bsdtar->option_options); 644 } 645 bsdtar->option_options = bsdtar->argument; 646 break; 647 case OPTION_OWNER: /* GNU tar */ 648 tptr = NULL; 649 650 uptr = strchr(bsdtar->argument, ':'); 651 if (uptr != NULL) { 652 if (uptr[1] == 0) { 653 lafe_errc(1, 0, "Invalid argument to --owner (missing id after :)"); 654 } 655 uptr[0] = 0; 656 uptr++; 657 l = strtol(uptr, &tptr, 10); 658 if (l < 0 || l >= INT_MAX || *uptr == '\0' || 659 tptr == NULL || *tptr != '\0') { 660 lafe_errc(1, 0, "Invalid argument to --owner (%s is not a number)", uptr); 661 } else { 662 bsdtar->uid = (int)l; 663 } 664 bsdtar->uname = bsdtar->argument; 665 } else { 666 l = strtol(bsdtar->argument, &tptr, 10); 667 if (l < 0 || l >= INT_MAX || *(bsdtar->argument) == '\0' || 668 tptr == NULL || *tptr != '\0') { 669 bsdtar->uname = bsdtar->argument; 670 } else { 671 bsdtar->uid = (int)l; 672 bsdtar->uname = ""; 673 } 674 } 675 break; 676 #if 0 677 /* 678 * The common BSD -P option is not necessary, since 679 * our default is to archive symlinks, not follow 680 * them. This is convenient, as -P conflicts with GNU 681 * tar anyway. 682 */ 683 case 'P': /* BSD convention */ 684 /* Default behavior, no option necessary. */ 685 break; 686 #endif 687 case 'P': /* GNU tar */ 688 bsdtar->extract_flags &= ~SECURITY; 689 bsdtar->flags |= OPTFLAG_ABSOLUTE_PATHS; 690 break; 691 case 'p': /* GNU tar, star */ 692 bsdtar->extract_flags |= ARCHIVE_EXTRACT_PERM; 693 bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL; 694 bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR; 695 bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS; 696 bsdtar->extract_flags |= ARCHIVE_EXTRACT_MAC_METADATA; 697 break; 698 case OPTION_PASSPHRASE: 699 bsdtar->passphrase = bsdtar->argument; 700 break; 701 case OPTION_POSIX: /* GNU tar */ 702 cset_set_format(bsdtar->cset, "pax"); 703 break; 704 case 'q': /* FreeBSD GNU tar --fast-read, NetBSD -q */ 705 bsdtar->flags |= OPTFLAG_FAST_READ; 706 break; 707 case 'r': /* SUSv2 */ 708 set_mode(bsdtar, opt); 709 break; 710 case OPTION_READ_SPARSE: 711 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_NO_SPARSE; 712 bsdtar->flags |= OPTFLAG_READ_SPARSE; 713 break; 714 case 'S': /* NetBSD pax-as-tar */ 715 bsdtar->extract_flags |= ARCHIVE_EXTRACT_SPARSE; 716 break; 717 case 's': /* NetBSD pax-as-tar */ 718 #if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H) || defined(HAVE_PCRE2POSIX_H) 719 add_substitution(bsdtar, bsdtar->argument); 720 #else 721 lafe_warnc(0, 722 "-s is not supported by this version of bsdtar"); 723 usage(); 724 #endif 725 break; 726 case OPTION_SAFE_WRITES: 727 bsdtar->extract_flags |= ARCHIVE_EXTRACT_SAFE_WRITES; 728 break; 729 case OPTION_SAME_OWNER: /* GNU tar */ 730 bsdtar->extract_flags |= ARCHIVE_EXTRACT_OWNER; 731 break; 732 case OPTION_STRIP_COMPONENTS: /* GNU tar 1.15 */ 733 tptr = NULL; 734 l = strtol(bsdtar->argument, &tptr, 10); 735 if (l < 0 || l > 100000L || *(bsdtar->argument) == '\0' || 736 tptr == NULL || *tptr != '\0') { 737 lafe_errc(1, 0, "Invalid argument to " 738 "--strip-components"); 739 } 740 bsdtar->strip_components = (int)l; 741 break; 742 case 'T': /* GNU tar */ 743 bsdtar->names_from_file = bsdtar->argument; 744 break; 745 case 't': /* SUSv2 */ 746 set_mode(bsdtar, opt); 747 bsdtar->verbose++; 748 break; 749 case OPTION_TOTALS: /* GNU tar */ 750 bsdtar->flags |= OPTFLAG_TOTALS; 751 break; 752 case 'U': /* GNU tar */ 753 bsdtar->extract_flags |= ARCHIVE_EXTRACT_UNLINK; 754 bsdtar->flags |= OPTFLAG_UNLINK_FIRST; 755 break; 756 case 'u': /* SUSv2 */ 757 set_mode(bsdtar, opt); 758 break; 759 case OPTION_UID: /* cpio */ 760 tptr = NULL; 761 l = strtol(bsdtar->argument, &tptr, 10); 762 if (l < 0 || l >= INT_MAX || *(bsdtar->argument) == '\0' || 763 tptr == NULL || *tptr != '\0') { 764 lafe_errc(1, 0, "Invalid argument to --uid"); 765 } 766 bsdtar->uid = (int)l; 767 break; 768 case OPTION_UNAME: /* cpio */ 769 bsdtar->uname = bsdtar->argument; 770 break; 771 case OPTION_UUENCODE: 772 if (compression2 != '\0') 773 lafe_errc(1, 0, 774 "Can't specify both --uuencode and " 775 "--b64encode"); 776 compression2 = opt; 777 compression2_name = "uuencode"; 778 break; 779 case 'v': /* SUSv2 */ 780 bsdtar->verbose++; 781 break; 782 case OPTION_VERSION: /* GNU convention */ 783 version(); 784 /* NOTREACHED */ 785 #if 0 786 /* 787 * The -W longopt feature is handled inside of 788 * bsdtar_getopt(), so -W is not available here. 789 */ 790 case 'W': /* Obscure GNU convention. */ 791 break; 792 #endif 793 case 'w': /* SUSv2 */ 794 bsdtar->flags |= OPTFLAG_INTERACTIVE; 795 break; 796 case 'X': /* GNU tar */ 797 if (archive_match_exclude_pattern_from_file( 798 bsdtar->matching, bsdtar->argument, 0) 799 != ARCHIVE_OK) 800 lafe_errc(1, 0, "Error : %s", 801 archive_error_string(bsdtar->matching)); 802 break; 803 case 'x': /* SUSv2 */ 804 set_mode(bsdtar, opt); 805 break; 806 case OPTION_XATTRS: /* GNU tar */ 807 bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR; 808 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_NO_XATTR; 809 bsdtar->flags |= OPTFLAG_XATTRS; 810 break; 811 case 'y': /* FreeBSD version of GNU tar */ 812 if (compression != '\0') 813 lafe_errc(1, 0, 814 "Can't specify both -%c and -%c", opt, 815 compression); 816 compression = opt; 817 compression_name = "bzip2"; 818 break; 819 case 'Z': /* GNU tar */ 820 if (compression != '\0') 821 lafe_errc(1, 0, 822 "Can't specify both -%c and -%c", opt, 823 compression); 824 compression = opt; 825 compression_name = "compress"; 826 break; 827 case 'z': /* GNU tar, star, many others */ 828 if (compression != '\0') 829 lafe_errc(1, 0, 830 "Can't specify both -%c and -%c", opt, 831 compression); 832 compression = opt; 833 compression_name = "gzip"; 834 break; 835 case OPTION_USE_COMPRESS_PROGRAM: 836 compress_program = bsdtar->argument; 837 break; 838 default: 839 usage(); 840 } 841 } 842 843 /* 844 * Sanity-check options. 845 */ 846 847 /* If no "real" mode was specified, treat -h as --help. */ 848 if ((bsdtar->mode == '\0') && possible_help_request) { 849 long_help(); 850 } 851 852 /* Otherwise, a mode is required. */ 853 if (bsdtar->mode == '\0') 854 lafe_errc(1, 0, 855 "Must specify one of -c, -r, -t, -u, -x"); 856 857 /* Check boolean options only permitted in certain modes. */ 858 if (bsdtar->flags & OPTFLAG_AUTO_COMPRESS) { 859 only_mode(bsdtar, "-a", "cx"); 860 if (bsdtar->mode == 'x') { 861 bsdtar->flags &= ~OPTFLAG_AUTO_COMPRESS; 862 lafe_warnc(0, 863 "Ignoring option -a in mode -x"); 864 } 865 } 866 if (bsdtar->readdisk_flags & ARCHIVE_READDISK_NO_TRAVERSE_MOUNTS) 867 only_mode(bsdtar, "--one-file-system", "cru"); 868 if (bsdtar->flags & OPTFLAG_FAST_READ) 869 only_mode(bsdtar, "--fast-read", "xt"); 870 if (bsdtar->extract_flags & ARCHIVE_EXTRACT_HFS_COMPRESSION_FORCED) 871 only_mode(bsdtar, "--hfsCompression", "x"); 872 if (bsdtar->extract_flags & ARCHIVE_EXTRACT_NO_HFS_COMPRESSION) 873 only_mode(bsdtar, "--nopreserveHFSCompression", "x"); 874 if (bsdtar->readdisk_flags & ARCHIVE_READDISK_HONOR_NODUMP) 875 only_mode(bsdtar, "--nodump", "cru"); 876 if (bsdtar->flags & OPTFLAG_ACLS) 877 only_mode(bsdtar, "--acls", "crux"); 878 if (bsdtar->flags & OPTFLAG_NO_ACLS) 879 only_mode(bsdtar, "--no-acls", "crux"); 880 if (bsdtar->flags & OPTFLAG_XATTRS) 881 only_mode(bsdtar, "--xattrs", "crux"); 882 if (bsdtar->flags & OPTFLAG_NO_XATTRS) 883 only_mode(bsdtar, "--no-xattrs", "crux"); 884 if (bsdtar->flags & OPTFLAG_FFLAGS) 885 only_mode(bsdtar, "--fflags", "crux"); 886 if (bsdtar->flags & OPTFLAG_NO_FFLAGS) 887 only_mode(bsdtar, "--no-fflags", "crux"); 888 if (bsdtar->flags & OPTFLAG_MAC_METADATA) 889 only_mode(bsdtar, "--mac-metadata", "crux"); 890 if (bsdtar->flags & OPTFLAG_NO_MAC_METADATA) 891 only_mode(bsdtar, "--no-mac-metadata", "crux"); 892 if (bsdtar->flags & OPTFLAG_O) { 893 switch (bsdtar->mode) { 894 case 'c': 895 /* 896 * In GNU tar, -o means "old format." The 897 * "ustar" format is the closest thing 898 * supported by libarchive. 899 */ 900 cset_set_format(bsdtar->cset, "ustar"); 901 /* TODO: bsdtar->create_format = "v7"; */ 902 break; 903 case 'x': 904 /* POSIX-compatible behavior. */ 905 bsdtar->flags |= OPTFLAG_NO_OWNER; 906 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_OWNER; 907 break; 908 default: 909 only_mode(bsdtar, "-o", "xc"); 910 break; 911 } 912 } 913 if (bsdtar->flags & OPTFLAG_STDOUT) 914 only_mode(bsdtar, "-O", "xt"); 915 if (bsdtar->flags & OPTFLAG_UNLINK_FIRST) 916 only_mode(bsdtar, "-U", "x"); 917 if (bsdtar->flags & OPTFLAG_WARN_LINKS) 918 only_mode(bsdtar, "--check-links", "cr"); 919 920 if ((bsdtar->flags & OPTFLAG_AUTO_COMPRESS) && 921 cset_auto_compress(bsdtar->cset, bsdtar->filename)) { 922 /* Ignore specified compressions if auto-compress works. */ 923 compression = '\0'; 924 compression2 = '\0'; 925 } 926 /* Check other parameters only permitted in certain modes. */ 927 if (compress_program != NULL) { 928 only_mode(bsdtar, "--use-compress-program", "cxt"); 929 cset_add_filter_program(bsdtar->cset, compress_program); 930 /* Ignore specified compressions. */ 931 compression = '\0'; 932 compression2 = '\0'; 933 } 934 if (compression != '\0') { 935 switch (compression) { 936 case 'J': case 'j': case 'y': case 'Z': case 'z': 937 strcpy(buff, "-?"); 938 buff[1] = compression; 939 break; 940 default: 941 strcpy(buff, "--"); 942 strcat(buff, compression_name); 943 break; 944 } 945 only_mode(bsdtar, buff, "cxt"); 946 cset_add_filter(bsdtar->cset, compression_name); 947 } 948 if (compression2 != '\0') { 949 strcpy(buff, "--"); 950 strcat(buff, compression2_name); 951 only_mode(bsdtar, buff, "cxt"); 952 cset_add_filter(bsdtar->cset, compression2_name); 953 } 954 if (cset_get_format(bsdtar->cset) != NULL) 955 only_mode(bsdtar, "--format", "cru"); 956 if (bsdtar->symlink_mode != '\0') { 957 strcpy(buff, "-?"); 958 buff[1] = bsdtar->symlink_mode; 959 only_mode(bsdtar, buff, "cru"); 960 } 961 962 /* 963 * When creating an archive from a directory tree, the directory 964 * walking code will already avoid entering directories when 965 * recursive inclusion of directory content is disabled, therefore 966 * changing the matching behavior has no effect for creation modes. 967 * It is relevant for extraction or listing. 968 */ 969 archive_match_set_inclusion_recursion(bsdtar->matching, 970 !(bsdtar->flags & OPTFLAG_NO_SUBDIRS)); 971 972 /* Filename "-" implies stdio. */ 973 if (strcmp(bsdtar->filename, "-") == 0) 974 bsdtar->filename = NULL; 975 976 switch(bsdtar->mode) { 977 case 'c': 978 tar_mode_c(bsdtar); 979 break; 980 case 'r': 981 tar_mode_r(bsdtar); 982 break; 983 case 't': 984 tar_mode_t(bsdtar); 985 break; 986 case 'u': 987 tar_mode_u(bsdtar); 988 break; 989 case 'x': 990 tar_mode_x(bsdtar); 991 break; 992 } 993 994 archive_match_free(bsdtar->matching); 995 #if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H) || defined(HAVE_PCRE2POSIX_H) 996 cleanup_substitution(bsdtar); 997 #endif 998 cset_free(bsdtar->cset); 999 passphrase_free(bsdtar->ppbuff); 1000 1001 if (bsdtar->return_value != 0) 1002 lafe_warnc(0, 1003 "Error exit delayed from previous errors."); 1004 return (bsdtar->return_value); 1005 } 1006 1007 static void 1008 set_mode(struct bsdtar *bsdtar, char opt) 1009 { 1010 if (bsdtar->mode != '\0' && bsdtar->mode != opt) 1011 lafe_errc(1, 0, 1012 "Can't specify both -%c and -%c", opt, bsdtar->mode); 1013 bsdtar->mode = opt; 1014 } 1015 1016 /* 1017 * Verify that the mode is correct. 1018 */ 1019 static void 1020 only_mode(struct bsdtar *bsdtar, const char *opt, const char *valid_modes) 1021 { 1022 if (strchr(valid_modes, bsdtar->mode) == NULL) 1023 lafe_errc(1, 0, 1024 "Option %s is not permitted in mode -%c", 1025 opt, bsdtar->mode); 1026 } 1027 1028 1029 void 1030 usage(void) 1031 { 1032 const char *p; 1033 1034 p = lafe_getprogname(); 1035 1036 fprintf(stderr, "Usage:\n"); 1037 fprintf(stderr, " List: %s -tf <archive-filename>\n", p); 1038 fprintf(stderr, " Extract: %s -xf <archive-filename>\n", p); 1039 fprintf(stderr, " Create: %s -cf <archive-filename> [filenames...]\n", p); 1040 fprintf(stderr, " Help: %s --help\n", p); 1041 exit(1); 1042 } 1043 1044 static void 1045 version(void) 1046 { 1047 printf("bsdtar %s - %s \n", 1048 BSDTAR_VERSION_STRING, 1049 archive_version_details()); 1050 exit(0); 1051 } 1052 1053 static const char *long_help_msg = 1054 "First option must be a mode specifier:\n" 1055 " -c Create -r Add/Replace -t List -u Update -x Extract\n" 1056 "Common Options:\n" 1057 " -b # Use # 512-byte records per I/O block\n" 1058 " -f <filename> Location of archive (default " _PATH_DEFTAPE ")\n" 1059 " -v Verbose\n" 1060 " -w Interactive\n" 1061 "Create: %p -c [options] [<file> | <dir> | @<archive> | -C <dir> ]\n" 1062 " <file>, <dir> add these items to archive\n" 1063 " -z, -j, -J, --lzma Compress archive with gzip/bzip2/xz/lzma\n" 1064 " --format {ustar|pax|cpio|shar} Select archive format\n" 1065 " --exclude <pattern> Skip files that match pattern\n" 1066 " -C <dir> Change to <dir> before processing remaining files\n" 1067 " @<archive> Add entries from <archive> to output\n" 1068 "List: %p -t [options] [<patterns>]\n" 1069 " <patterns> If specified, list only entries that match\n" 1070 "Extract: %p -x [options] [<patterns>]\n" 1071 " <patterns> If specified, extract only entries that match\n" 1072 " -k Keep (don't overwrite) existing files\n" 1073 " -m Don't restore modification times\n" 1074 " -O Write entries to stdout, don't restore to disk\n" 1075 " -p Restore permissions (including ACLs, owner, file flags)\n"; 1076 1077 1078 /* 1079 * Note that the word 'bsdtar' will always appear in the first line 1080 * of output. 1081 * 1082 * In particular, /bin/sh scripts that need to test for the presence 1083 * of bsdtar can use the following template: 1084 * 1085 * if (tar --help 2>&1 | grep bsdtar >/dev/null 2>&1 ) then \ 1086 * echo bsdtar; else echo not bsdtar; fi 1087 */ 1088 static void 1089 long_help(void) 1090 { 1091 const char *prog; 1092 const char *p; 1093 1094 prog = lafe_getprogname(); 1095 1096 fflush(stderr); 1097 1098 p = (strcmp(prog,"bsdtar") != 0) ? "(bsdtar)" : ""; 1099 printf("%s%s: manipulate archive files\n", prog, p); 1100 1101 for (p = long_help_msg; *p != '\0'; p++) { 1102 if (*p == '%') { 1103 if (p[1] == 'p') { 1104 fputs(prog, stdout); 1105 p++; 1106 } else 1107 putchar('%'); 1108 } else 1109 putchar(*p); 1110 } 1111 version(); 1112 } 1113