1 /*- 2 * Copyright (c) 2003-2008 Tim Kientzle 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "bsdtar_platform.h" 27 __FBSDID("$FreeBSD$"); 28 29 #ifdef HAVE_SYS_PARAM_H 30 #include <sys/param.h> 31 #endif 32 #ifdef HAVE_SYS_STAT_H 33 #include <sys/stat.h> 34 #endif 35 #ifdef HAVE_COPYFILE_H 36 #include <copyfile.h> 37 #endif 38 #ifdef HAVE_ERRNO_H 39 #include <errno.h> 40 #endif 41 #ifdef HAVE_FCNTL_H 42 #include <fcntl.h> 43 #endif 44 #ifdef HAVE_LANGINFO_H 45 #include <langinfo.h> 46 #endif 47 #ifdef HAVE_LOCALE_H 48 #include <locale.h> 49 #endif 50 #ifdef HAVE_PATHS_H 51 #include <paths.h> 52 #endif 53 #ifdef HAVE_SIGNAL_H 54 #include <signal.h> 55 #endif 56 #include <stdio.h> 57 #ifdef HAVE_STDLIB_H 58 #include <stdlib.h> 59 #endif 60 #ifdef HAVE_STRING_H 61 #include <string.h> 62 #endif 63 #ifdef HAVE_TIME_H 64 #include <time.h> 65 #endif 66 #ifdef HAVE_UNISTD_H 67 #include <unistd.h> 68 #endif 69 70 #include "bsdtar.h" 71 #include "err.h" 72 73 /* 74 * Per POSIX.1-1988, tar defaults to reading/writing archives to/from 75 * the default tape device for the system. Pick something reasonable here. 76 */ 77 #ifdef __linux 78 #define _PATH_DEFTAPE "/dev/st0" 79 #endif 80 #if defined(_WIN32) && !defined(__CYGWIN__) 81 #define _PATH_DEFTAPE "\\\\.\\tape0" 82 #endif 83 #if defined(__APPLE__) 84 #undef _PATH_DEFTAPE 85 #define _PATH_DEFTAPE "-" /* Mac OS has no tape support, default to stdio. */ 86 #endif 87 88 #ifndef _PATH_DEFTAPE 89 #define _PATH_DEFTAPE "/dev/tape" 90 #endif 91 92 #ifdef __MINGW32__ 93 int _CRT_glob = 0; /* Disable broken CRT globbing. */ 94 #endif 95 96 #if defined(HAVE_SIGACTION) && (defined(SIGINFO) || defined(SIGUSR1)) 97 static volatile int siginfo_occurred; 98 99 static void 100 siginfo_handler(int sig) 101 { 102 (void)sig; /* UNUSED */ 103 siginfo_occurred = 1; 104 } 105 106 int 107 need_report(void) 108 { 109 int r = siginfo_occurred; 110 siginfo_occurred = 0; 111 return (r); 112 } 113 #else 114 int 115 need_report(void) 116 { 117 return (0); 118 } 119 #endif 120 121 static void long_help(void) __LA_DEAD; 122 static void only_mode(struct bsdtar *, const char *opt, 123 const char *valid); 124 static void set_mode(struct bsdtar *, char opt); 125 static void version(void) __LA_DEAD; 126 127 /* A basic set of security flags to request from libarchive. */ 128 #define SECURITY \ 129 (ARCHIVE_EXTRACT_SECURE_SYMLINKS \ 130 | ARCHIVE_EXTRACT_SECURE_NODOTDOT) 131 132 static char const * const vcs_files[] = { 133 /* CVS */ 134 "CVS", ".cvsignore", 135 /* RCS */ 136 "RCS", 137 /* SCCS */ 138 "SCCS", 139 /* SVN */ 140 ".svn", 141 /* git */ 142 ".git", ".gitignore", ".gitattributes", ".gitmodules", 143 /* Arch */ 144 ".arch-ids", "{arch}", "=RELEASE-ID", "=meta-update", "=update", 145 /* Bazaar */ 146 ".bzr", ".bzrignore", ".bzrtags", 147 /* Mercurial */ 148 ".hg", ".hgignore", ".hgtags", 149 /* darcs */ 150 "_darcs", 151 NULL 152 }; 153 154 int 155 main(int argc, char **argv) 156 { 157 struct bsdtar *bsdtar, bsdtar_storage; 158 int opt, t; 159 char compression, compression2; 160 const char *compression_name, *compression2_name; 161 const char *compress_program; 162 char *tptr; 163 char possible_help_request; 164 char buff[16]; 165 166 /* 167 * Use a pointer for consistency, but stack-allocated storage 168 * for ease of cleanup. 169 */ 170 bsdtar = &bsdtar_storage; 171 memset(bsdtar, 0, sizeof(*bsdtar)); 172 bsdtar->fd = -1; /* Mark as "unused" */ 173 bsdtar->gid = -1; 174 bsdtar->uid = -1; 175 bsdtar->flags = 0; 176 compression = compression2 = '\0'; 177 compression_name = compression2_name = NULL; 178 compress_program = NULL; 179 180 #if defined(HAVE_SIGACTION) 181 { /* Set up signal handling. */ 182 struct sigaction sa; 183 sa.sa_handler = siginfo_handler; 184 sigemptyset(&sa.sa_mask); 185 sa.sa_flags = 0; 186 #ifdef SIGINFO 187 if (sigaction(SIGINFO, &sa, NULL)) 188 lafe_errc(1, errno, "sigaction(SIGINFO) failed"); 189 #endif 190 #ifdef SIGUSR1 191 /* ... and treat SIGUSR1 the same way as SIGINFO. */ 192 if (sigaction(SIGUSR1, &sa, NULL)) 193 lafe_errc(1, errno, "sigaction(SIGUSR1) failed"); 194 #endif 195 #ifdef SIGPIPE 196 /* Ignore SIGPIPE signals. */ 197 sa.sa_handler = SIG_IGN; 198 sigaction(SIGPIPE, &sa, NULL); 199 #endif 200 } 201 #endif 202 203 /* Set lafe_progname before calling lafe_warnc. */ 204 lafe_setprogname(*argv, "bsdtar"); 205 206 #if HAVE_SETLOCALE 207 if (setlocale(LC_ALL, "") == NULL) 208 lafe_warnc(0, "Failed to set default locale"); 209 #endif 210 #if defined(HAVE_NL_LANGINFO) && defined(HAVE_D_MD_ORDER) 211 bsdtar->day_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 212 #endif 213 possible_help_request = 0; 214 215 /* Look up uid of current user for future reference */ 216 bsdtar->user_uid = geteuid(); 217 218 /* Default: open tape drive. */ 219 bsdtar->filename = getenv("TAPE"); 220 if (bsdtar->filename == NULL) 221 bsdtar->filename = _PATH_DEFTAPE; 222 223 /* Default block size settings. */ 224 bsdtar->bytes_per_block = DEFAULT_BYTES_PER_BLOCK; 225 /* Allow library to default this unless user specifies -b. */ 226 bsdtar->bytes_in_last_block = -1; 227 228 /* Default: preserve mod time on extract */ 229 bsdtar->extract_flags = ARCHIVE_EXTRACT_TIME; 230 231 /* Default: Perform basic security checks. */ 232 bsdtar->extract_flags |= SECURITY; 233 234 #ifndef _WIN32 235 /* On POSIX systems, assume --same-owner and -p when run by 236 * the root user. This doesn't make any sense on Windows. */ 237 if (bsdtar->user_uid == 0) { 238 /* --same-owner */ 239 bsdtar->extract_flags |= ARCHIVE_EXTRACT_OWNER; 240 /* -p */ 241 bsdtar->extract_flags |= ARCHIVE_EXTRACT_PERM; 242 bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL; 243 bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR; 244 bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS; 245 bsdtar->extract_flags |= ARCHIVE_EXTRACT_MAC_METADATA; 246 } 247 #endif 248 249 /* 250 * Enable Mac OS "copyfile()" extension by default. 251 * This has no effect on other platforms. 252 */ 253 bsdtar->readdisk_flags |= ARCHIVE_READDISK_MAC_COPYFILE; 254 #ifdef COPYFILE_DISABLE_VAR 255 if (getenv(COPYFILE_DISABLE_VAR)) 256 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_MAC_COPYFILE; 257 #endif 258 #if defined(__APPLE__) 259 /* 260 * On Mac OS ACLs are archived with copyfile() (--mac-metadata) 261 * Translation to NFSv4 ACLs has to be requested explicitly with --acls 262 */ 263 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_ACL; 264 #endif 265 266 bsdtar->matching = archive_match_new(); 267 if (bsdtar->matching == NULL) 268 lafe_errc(1, errno, "Out of memory"); 269 bsdtar->cset = cset_new(); 270 if (bsdtar->cset == NULL) 271 lafe_errc(1, errno, "Out of memory"); 272 273 bsdtar->argv = argv; 274 bsdtar->argc = argc; 275 276 /* 277 * Comments following each option indicate where that option 278 * originated: SUSv2, POSIX, GNU tar, star, etc. If there's 279 * no such comment, then I don't know of anyone else who 280 * implements that option. 281 */ 282 while ((opt = bsdtar_getopt(bsdtar)) != -1) { 283 switch (opt) { 284 case 'a': /* GNU tar */ 285 bsdtar->flags |= OPTFLAG_AUTO_COMPRESS; 286 break; 287 case OPTION_ACLS: /* GNU tar */ 288 bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL; 289 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_NO_ACL; 290 bsdtar->flags |= OPTFLAG_ACLS; 291 break; 292 case 'B': /* GNU tar */ 293 /* libarchive doesn't need this; just ignore it. */ 294 break; 295 case 'b': /* SUSv2 */ 296 errno = 0; 297 tptr = NULL; 298 t = (int)strtol(bsdtar->argument, &tptr, 10); 299 if (errno || t <= 0 || t > 8192 || 300 *(bsdtar->argument) == '\0' || tptr == NULL || 301 *tptr != '\0') { 302 lafe_errc(1, 0, "Invalid or out of range " 303 "(1..8192) argument to -b"); 304 } 305 bsdtar->bytes_per_block = 512 * t; 306 /* Explicit -b forces last block size. */ 307 bsdtar->bytes_in_last_block = bsdtar->bytes_per_block; 308 break; 309 case OPTION_B64ENCODE: 310 if (compression2 != '\0') 311 lafe_errc(1, 0, 312 "Can't specify both --uuencode and " 313 "--b64encode"); 314 compression2 = opt; 315 compression2_name = "b64encode"; 316 break; 317 case 'C': /* GNU tar */ 318 if (strlen(bsdtar->argument) == 0) 319 lafe_errc(1, 0, 320 "Meaningless option: -C ''"); 321 322 set_chdir(bsdtar, bsdtar->argument); 323 break; 324 case 'c': /* SUSv2 */ 325 set_mode(bsdtar, opt); 326 break; 327 case OPTION_CHECK_LINKS: /* GNU tar */ 328 bsdtar->flags |= OPTFLAG_WARN_LINKS; 329 break; 330 case OPTION_CHROOT: /* NetBSD */ 331 bsdtar->flags |= OPTFLAG_CHROOT; 332 break; 333 case OPTION_CLEAR_NOCHANGE_FFLAGS: 334 bsdtar->extract_flags |= 335 ARCHIVE_EXTRACT_CLEAR_NOCHANGE_FFLAGS; 336 break; 337 case OPTION_EXCLUDE: /* GNU tar */ 338 if (archive_match_exclude_pattern( 339 bsdtar->matching, bsdtar->argument) != ARCHIVE_OK) 340 lafe_errc(1, 0, 341 "Couldn't exclude %s\n", bsdtar->argument); 342 break; 343 case OPTION_EXCLUDE_VCS: /* GNU tar */ 344 for(t=0; vcs_files[t]; t++) { 345 if (archive_match_exclude_pattern( 346 bsdtar->matching, 347 vcs_files[t]) != ARCHIVE_OK) 348 lafe_errc(1, 0, "Couldn't " 349 "exclude %s\n", vcs_files[t]); 350 } 351 break; 352 case OPTION_FFLAGS: 353 bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS; 354 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_NO_FFLAGS; 355 bsdtar->flags |= OPTFLAG_FFLAGS; 356 break; 357 case OPTION_FORMAT: /* GNU tar, others */ 358 cset_set_format(bsdtar->cset, bsdtar->argument); 359 break; 360 case 'f': /* SUSv2 */ 361 bsdtar->filename = bsdtar->argument; 362 break; 363 case OPTION_GID: /* cpio */ 364 errno = 0; 365 tptr = NULL; 366 t = (int)strtol(bsdtar->argument, &tptr, 10); 367 if (errno || t < 0 || *(bsdtar->argument) == '\0' || 368 tptr == NULL || *tptr != '\0') { 369 lafe_errc(1, 0, "Invalid argument to --gid"); 370 } 371 bsdtar->gid = t; 372 break; 373 case OPTION_GNAME: /* cpio */ 374 bsdtar->gname = bsdtar->argument; 375 break; 376 case OPTION_GRZIP: 377 if (compression != '\0') 378 lafe_errc(1, 0, 379 "Can't specify both -%c and -%c", opt, 380 compression); 381 compression = opt; 382 compression_name = "grzip"; 383 break; 384 case 'H': /* BSD convention */ 385 bsdtar->symlink_mode = 'H'; 386 break; 387 case 'h': /* Linux Standards Base, gtar; synonym for -L */ 388 bsdtar->symlink_mode = 'L'; 389 /* Hack: -h by itself is the "help" command. */ 390 possible_help_request = 1; 391 break; 392 case OPTION_HELP: /* GNU tar, others */ 393 long_help(); 394 exit(0); 395 break; 396 case OPTION_HFS_COMPRESSION: /* Mac OS X v10.6 or later */ 397 bsdtar->extract_flags |= 398 ARCHIVE_EXTRACT_HFS_COMPRESSION_FORCED; 399 break; 400 case OPTION_IGNORE_ZEROS: 401 bsdtar->flags |= OPTFLAG_IGNORE_ZEROS; 402 break; 403 case 'I': /* GNU tar */ 404 /* 405 * TODO: Allow 'names' to come from an archive, 406 * not just a text file. Design a good UI for 407 * allowing names and mode/owner to be read 408 * from an archive, with contents coming from 409 * disk. This can be used to "refresh" an 410 * archive or to design archives with special 411 * permissions without having to create those 412 * permissions on disk. 413 */ 414 bsdtar->names_from_file = bsdtar->argument; 415 break; 416 case OPTION_INCLUDE: 417 /* 418 * No one else has the @archive extension, so 419 * no one else needs this to filter entries 420 * when transforming archives. 421 */ 422 if (archive_match_include_pattern(bsdtar->matching, 423 bsdtar->argument) != ARCHIVE_OK) 424 lafe_errc(1, 0, 425 "Failed to add %s to inclusion list", 426 bsdtar->argument); 427 break; 428 case 'j': /* GNU tar */ 429 if (compression != '\0') 430 lafe_errc(1, 0, 431 "Can't specify both -%c and -%c", opt, 432 compression); 433 compression = opt; 434 compression_name = "bzip2"; 435 break; 436 case 'J': /* GNU tar 1.21 and later */ 437 if (compression != '\0') 438 lafe_errc(1, 0, 439 "Can't specify both -%c and -%c", opt, 440 compression); 441 compression = opt; 442 compression_name = "xz"; 443 break; 444 case 'k': /* GNU tar */ 445 bsdtar->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE; 446 break; 447 case OPTION_KEEP_NEWER_FILES: /* GNU tar */ 448 bsdtar->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER; 449 break; 450 case 'L': /* BSD convention */ 451 bsdtar->symlink_mode = 'L'; 452 break; 453 case 'l': /* SUSv2 and GNU tar beginning with 1.16 */ 454 /* GNU tar 1.13 used -l for --one-file-system */ 455 bsdtar->flags |= OPTFLAG_WARN_LINKS; 456 break; 457 case OPTION_LRZIP: 458 case OPTION_LZ4: 459 case OPTION_LZIP: /* GNU tar beginning with 1.23 */ 460 case OPTION_LZMA: /* GNU tar beginning with 1.20 */ 461 case OPTION_LZOP: /* GNU tar beginning with 1.21 */ 462 case OPTION_ZSTD: 463 if (compression != '\0') 464 lafe_errc(1, 0, 465 "Can't specify both -%c and -%c", opt, 466 compression); 467 compression = opt; 468 switch (opt) { 469 case OPTION_LRZIP: compression_name = "lrzip"; break; 470 case OPTION_LZ4: compression_name = "lz4"; break; 471 case OPTION_LZIP: compression_name = "lzip"; break; 472 case OPTION_LZMA: compression_name = "lzma"; break; 473 case OPTION_LZOP: compression_name = "lzop"; break; 474 case OPTION_ZSTD: compression_name = "zstd"; break; 475 } 476 break; 477 case 'm': /* SUSv2 */ 478 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_TIME; 479 break; 480 case OPTION_MAC_METADATA: /* Mac OS X */ 481 bsdtar->readdisk_flags |= ARCHIVE_READDISK_MAC_COPYFILE; 482 bsdtar->extract_flags |= ARCHIVE_EXTRACT_MAC_METADATA; 483 bsdtar->flags |= OPTFLAG_MAC_METADATA; 484 break; 485 case 'n': /* GNU tar */ 486 bsdtar->flags |= OPTFLAG_NO_SUBDIRS; 487 break; 488 /* 489 * Selecting files by time: 490 * --newer-?time='date' Only files newer than 'date' 491 * --newer-?time-than='file' Only files newer than time 492 * on specified file (useful for incremental backups) 493 */ 494 case OPTION_NEWER_CTIME: /* GNU tar */ 495 if (archive_match_include_date(bsdtar->matching, 496 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_NEWER, 497 bsdtar->argument) != ARCHIVE_OK) 498 lafe_errc(1, 0, "Error : %s", 499 archive_error_string(bsdtar->matching)); 500 break; 501 case OPTION_NEWER_CTIME_THAN: 502 if (archive_match_include_file_time(bsdtar->matching, 503 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_NEWER, 504 bsdtar->argument) != ARCHIVE_OK) 505 lafe_errc(1, 0, "Error : %s", 506 archive_error_string(bsdtar->matching)); 507 break; 508 case OPTION_NEWER_MTIME: /* GNU tar */ 509 if (archive_match_include_date(bsdtar->matching, 510 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_NEWER, 511 bsdtar->argument) != ARCHIVE_OK) 512 lafe_errc(1, 0, "Error : %s", 513 archive_error_string(bsdtar->matching)); 514 break; 515 case OPTION_NEWER_MTIME_THAN: 516 if (archive_match_include_file_time(bsdtar->matching, 517 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_NEWER, 518 bsdtar->argument) != ARCHIVE_OK) 519 lafe_errc(1, 0, "Error : %s", 520 archive_error_string(bsdtar->matching)); 521 break; 522 case OPTION_NODUMP: /* star */ 523 bsdtar->readdisk_flags |= ARCHIVE_READDISK_HONOR_NODUMP; 524 break; 525 case OPTION_NOPRESERVE_HFS_COMPRESSION: 526 /* Mac OS X v10.6 or later */ 527 bsdtar->extract_flags |= 528 ARCHIVE_EXTRACT_NO_HFS_COMPRESSION; 529 break; 530 case OPTION_NO_ACLS: /* GNU tar */ 531 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_ACL; 532 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_ACL; 533 bsdtar->flags |= OPTFLAG_NO_ACLS; 534 break; 535 case OPTION_NO_FFLAGS: 536 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_FFLAGS; 537 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_FFLAGS; 538 bsdtar->flags |= OPTFLAG_NO_FFLAGS; 539 break; 540 case OPTION_NO_MAC_METADATA: /* Mac OS X */ 541 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_MAC_COPYFILE; 542 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_MAC_METADATA; 543 bsdtar->flags |= OPTFLAG_NO_MAC_METADATA; 544 break; 545 case OPTION_NO_SAME_OWNER: /* GNU tar */ 546 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_OWNER; 547 break; 548 case OPTION_NO_SAME_PERMISSIONS: /* GNU tar */ 549 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_PERM; 550 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_ACL; 551 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_XATTR; 552 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_FFLAGS; 553 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_MAC_METADATA; 554 break; 555 case OPTION_NO_XATTRS: /* GNU tar */ 556 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_XATTR; 557 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_XATTR; 558 bsdtar->flags |= OPTFLAG_NO_XATTRS; 559 break; 560 case OPTION_NULL: /* GNU tar */ 561 bsdtar->flags |= OPTFLAG_NULL; 562 break; 563 case OPTION_NUMERIC_OWNER: /* GNU tar */ 564 bsdtar->uname = ""; 565 bsdtar->gname = ""; 566 bsdtar->flags |= OPTFLAG_NUMERIC_OWNER; 567 break; 568 case 'O': /* GNU tar */ 569 bsdtar->flags |= OPTFLAG_STDOUT; 570 break; 571 case 'o': /* SUSv2 and GNU conflict here, but not fatally */ 572 bsdtar->flags |= OPTFLAG_O; 573 break; 574 /* 575 * Selecting files by time: 576 * --older-?time='date' Only files older than 'date' 577 * --older-?time-than='file' Only files older than time 578 * on specified file 579 */ 580 case OPTION_OLDER_CTIME: 581 if (archive_match_include_date(bsdtar->matching, 582 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_OLDER, 583 bsdtar->argument) != ARCHIVE_OK) 584 lafe_errc(1, 0, "Error : %s", 585 archive_error_string(bsdtar->matching)); 586 break; 587 case OPTION_OLDER_CTIME_THAN: 588 if (archive_match_include_file_time(bsdtar->matching, 589 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_OLDER, 590 bsdtar->argument) != ARCHIVE_OK) 591 lafe_errc(1, 0, "Error : %s", 592 archive_error_string(bsdtar->matching)); 593 break; 594 case OPTION_OLDER_MTIME: 595 if (archive_match_include_date(bsdtar->matching, 596 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_OLDER, 597 bsdtar->argument) != ARCHIVE_OK) 598 lafe_errc(1, 0, "Error : %s", 599 archive_error_string(bsdtar->matching)); 600 break; 601 case OPTION_OLDER_MTIME_THAN: 602 if (archive_match_include_file_time(bsdtar->matching, 603 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_OLDER, 604 bsdtar->argument) != ARCHIVE_OK) 605 lafe_errc(1, 0, "Error : %s", 606 archive_error_string(bsdtar->matching)); 607 break; 608 case OPTION_ONE_FILE_SYSTEM: /* GNU tar */ 609 bsdtar->readdisk_flags |= 610 ARCHIVE_READDISK_NO_TRAVERSE_MOUNTS; 611 break; 612 case OPTION_OPTIONS: 613 bsdtar->option_options = bsdtar->argument; 614 break; 615 #if 0 616 /* 617 * The common BSD -P option is not necessary, since 618 * our default is to archive symlinks, not follow 619 * them. This is convenient, as -P conflicts with GNU 620 * tar anyway. 621 */ 622 case 'P': /* BSD convention */ 623 /* Default behavior, no option necessary. */ 624 break; 625 #endif 626 case 'P': /* GNU tar */ 627 bsdtar->extract_flags &= ~SECURITY; 628 bsdtar->flags |= OPTFLAG_ABSOLUTE_PATHS; 629 break; 630 case 'p': /* GNU tar, star */ 631 bsdtar->extract_flags |= ARCHIVE_EXTRACT_PERM; 632 bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL; 633 bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR; 634 bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS; 635 bsdtar->extract_flags |= ARCHIVE_EXTRACT_MAC_METADATA; 636 break; 637 case OPTION_PASSPHRASE: 638 bsdtar->passphrase = bsdtar->argument; 639 break; 640 case OPTION_POSIX: /* GNU tar */ 641 cset_set_format(bsdtar->cset, "pax"); 642 break; 643 case 'q': /* FreeBSD GNU tar --fast-read, NetBSD -q */ 644 bsdtar->flags |= OPTFLAG_FAST_READ; 645 break; 646 case 'r': /* SUSv2 */ 647 set_mode(bsdtar, opt); 648 break; 649 case 'S': /* NetBSD pax-as-tar */ 650 bsdtar->extract_flags |= ARCHIVE_EXTRACT_SPARSE; 651 break; 652 case 's': /* NetBSD pax-as-tar */ 653 #if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H) 654 add_substitution(bsdtar, bsdtar->argument); 655 #else 656 lafe_warnc(0, 657 "-s is not supported by this version of bsdtar"); 658 usage(); 659 #endif 660 break; 661 case OPTION_SAME_OWNER: /* GNU tar */ 662 bsdtar->extract_flags |= ARCHIVE_EXTRACT_OWNER; 663 break; 664 case OPTION_STRIP_COMPONENTS: /* GNU tar 1.15 */ 665 errno = 0; 666 tptr = NULL; 667 t = (int)strtol(bsdtar->argument, &tptr, 10); 668 if (errno || t < 0 || *(bsdtar->argument) == '\0' || 669 tptr == NULL || *tptr != '\0') { 670 lafe_errc(1, 0, "Invalid argument to " 671 "--strip-components"); 672 } 673 bsdtar->strip_components = t; 674 break; 675 case 'T': /* GNU tar */ 676 bsdtar->names_from_file = bsdtar->argument; 677 break; 678 case 't': /* SUSv2 */ 679 set_mode(bsdtar, opt); 680 bsdtar->verbose++; 681 break; 682 case OPTION_TOTALS: /* GNU tar */ 683 bsdtar->flags |= OPTFLAG_TOTALS; 684 break; 685 case 'U': /* GNU tar */ 686 bsdtar->extract_flags |= ARCHIVE_EXTRACT_UNLINK; 687 bsdtar->flags |= OPTFLAG_UNLINK_FIRST; 688 break; 689 case 'u': /* SUSv2 */ 690 set_mode(bsdtar, opt); 691 break; 692 case OPTION_UID: /* cpio */ 693 errno = 0; 694 tptr = NULL; 695 t = (int)strtol(bsdtar->argument, &tptr, 10); 696 if (errno || t < 0 || *(bsdtar->argument) == '\0' || 697 tptr == NULL || *tptr != '\0') { 698 lafe_errc(1, 0, "Invalid argument to --uid"); 699 } 700 bsdtar->uid = t; 701 break; 702 case OPTION_UNAME: /* cpio */ 703 bsdtar->uname = bsdtar->argument; 704 break; 705 case OPTION_UUENCODE: 706 if (compression2 != '\0') 707 lafe_errc(1, 0, 708 "Can't specify both --uuencode and " 709 "--b64encode"); 710 compression2 = opt; 711 compression2_name = "uuencode"; 712 break; 713 case 'v': /* SUSv2 */ 714 bsdtar->verbose++; 715 break; 716 case OPTION_VERSION: /* GNU convention */ 717 version(); 718 break; 719 #if 0 720 /* 721 * The -W longopt feature is handled inside of 722 * bsdtar_getopt(), so -W is not available here. 723 */ 724 case 'W': /* Obscure GNU convention. */ 725 break; 726 #endif 727 case 'w': /* SUSv2 */ 728 bsdtar->flags |= OPTFLAG_INTERACTIVE; 729 break; 730 case 'X': /* GNU tar */ 731 if (archive_match_exclude_pattern_from_file( 732 bsdtar->matching, bsdtar->argument, 0) 733 != ARCHIVE_OK) 734 lafe_errc(1, 0, "Error : %s", 735 archive_error_string(bsdtar->matching)); 736 break; 737 case 'x': /* SUSv2 */ 738 set_mode(bsdtar, opt); 739 break; 740 case OPTION_XATTRS: /* GNU tar */ 741 bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR; 742 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_NO_XATTR; 743 bsdtar->flags |= OPTFLAG_XATTRS; 744 break; 745 case 'y': /* FreeBSD version of GNU tar */ 746 if (compression != '\0') 747 lafe_errc(1, 0, 748 "Can't specify both -%c and -%c", opt, 749 compression); 750 compression = opt; 751 compression_name = "bzip2"; 752 break; 753 case 'Z': /* GNU tar */ 754 if (compression != '\0') 755 lafe_errc(1, 0, 756 "Can't specify both -%c and -%c", opt, 757 compression); 758 compression = opt; 759 compression_name = "compress"; 760 break; 761 case 'z': /* GNU tar, star, many others */ 762 if (compression != '\0') 763 lafe_errc(1, 0, 764 "Can't specify both -%c and -%c", opt, 765 compression); 766 compression = opt; 767 compression_name = "gzip"; 768 break; 769 case OPTION_USE_COMPRESS_PROGRAM: 770 compress_program = bsdtar->argument; 771 break; 772 default: 773 usage(); 774 } 775 } 776 777 /* 778 * Sanity-check options. 779 */ 780 781 /* If no "real" mode was specified, treat -h as --help. */ 782 if ((bsdtar->mode == '\0') && possible_help_request) { 783 long_help(); 784 exit(0); 785 } 786 787 /* Otherwise, a mode is required. */ 788 if (bsdtar->mode == '\0') 789 lafe_errc(1, 0, 790 "Must specify one of -c, -r, -t, -u, -x"); 791 792 /* Check boolean options only permitted in certain modes. */ 793 if (bsdtar->flags & OPTFLAG_AUTO_COMPRESS) 794 only_mode(bsdtar, "-a", "c"); 795 if (bsdtar->readdisk_flags & ARCHIVE_READDISK_NO_TRAVERSE_MOUNTS) 796 only_mode(bsdtar, "--one-file-system", "cru"); 797 if (bsdtar->flags & OPTFLAG_FAST_READ) 798 only_mode(bsdtar, "--fast-read", "xt"); 799 if (bsdtar->extract_flags & ARCHIVE_EXTRACT_HFS_COMPRESSION_FORCED) 800 only_mode(bsdtar, "--hfsCompression", "x"); 801 if (bsdtar->extract_flags & ARCHIVE_EXTRACT_NO_HFS_COMPRESSION) 802 only_mode(bsdtar, "--nopreserveHFSCompression", "x"); 803 if (bsdtar->readdisk_flags & ARCHIVE_READDISK_HONOR_NODUMP) 804 only_mode(bsdtar, "--nodump", "cru"); 805 if (bsdtar->flags & OPTFLAG_ACLS) 806 only_mode(bsdtar, "--acls", "crux"); 807 if (bsdtar->flags & OPTFLAG_NO_ACLS) 808 only_mode(bsdtar, "--no-acls", "crux"); 809 if (bsdtar->flags & OPTFLAG_XATTRS) 810 only_mode(bsdtar, "--xattrs", "crux"); 811 if (bsdtar->flags & OPTFLAG_NO_XATTRS) 812 only_mode(bsdtar, "--no-xattrs", "crux"); 813 if (bsdtar->flags & OPTFLAG_FFLAGS) 814 only_mode(bsdtar, "--fflags", "crux"); 815 if (bsdtar->flags & OPTFLAG_NO_FFLAGS) 816 only_mode(bsdtar, "--no-fflags", "crux"); 817 if (bsdtar->flags & OPTFLAG_MAC_METADATA) 818 only_mode(bsdtar, "--mac-metadata", "crux"); 819 if (bsdtar->flags & OPTFLAG_NO_MAC_METADATA) 820 only_mode(bsdtar, "--no-mac-metadata", "crux"); 821 if (bsdtar->flags & OPTFLAG_O) { 822 switch (bsdtar->mode) { 823 case 'c': 824 /* 825 * In GNU tar, -o means "old format." The 826 * "ustar" format is the closest thing 827 * supported by libarchive. 828 */ 829 cset_set_format(bsdtar->cset, "ustar"); 830 /* TODO: bsdtar->create_format = "v7"; */ 831 break; 832 case 'x': 833 /* POSIX-compatible behavior. */ 834 bsdtar->flags |= OPTFLAG_NO_OWNER; 835 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_OWNER; 836 break; 837 default: 838 only_mode(bsdtar, "-o", "xc"); 839 break; 840 } 841 } 842 if (bsdtar->flags & OPTFLAG_STDOUT) 843 only_mode(bsdtar, "-O", "xt"); 844 if (bsdtar->flags & OPTFLAG_UNLINK_FIRST) 845 only_mode(bsdtar, "-U", "x"); 846 if (bsdtar->flags & OPTFLAG_WARN_LINKS) 847 only_mode(bsdtar, "--check-links", "cr"); 848 849 if ((bsdtar->flags & OPTFLAG_AUTO_COMPRESS) && 850 cset_auto_compress(bsdtar->cset, bsdtar->filename)) { 851 /* Ignore specified compressions if auto-compress works. */ 852 compression = '\0'; 853 compression2 = '\0'; 854 } 855 /* Check other parameters only permitted in certain modes. */ 856 if (compress_program != NULL) { 857 only_mode(bsdtar, "--use-compress-program", "cxt"); 858 cset_add_filter_program(bsdtar->cset, compress_program); 859 /* Ignore specified compressions. */ 860 compression = '\0'; 861 compression2 = '\0'; 862 } 863 if (compression != '\0') { 864 switch (compression) { 865 case 'J': case 'j': case 'y': case 'Z': case 'z': 866 strcpy(buff, "-?"); 867 buff[1] = compression; 868 break; 869 default: 870 strcpy(buff, "--"); 871 strcat(buff, compression_name); 872 break; 873 } 874 only_mode(bsdtar, buff, "cxt"); 875 cset_add_filter(bsdtar->cset, compression_name); 876 } 877 if (compression2 != '\0') { 878 strcpy(buff, "--"); 879 strcat(buff, compression2_name); 880 only_mode(bsdtar, buff, "cxt"); 881 cset_add_filter(bsdtar->cset, compression2_name); 882 } 883 if (cset_get_format(bsdtar->cset) != NULL) 884 only_mode(bsdtar, "--format", "cru"); 885 if (bsdtar->symlink_mode != '\0') { 886 strcpy(buff, "-?"); 887 buff[1] = bsdtar->symlink_mode; 888 only_mode(bsdtar, buff, "cru"); 889 } 890 891 /* 892 * When creating an archive from a directory tree, the directory 893 * walking code will already avoid entering directories when 894 * recursive inclusion of directory content is disabled, therefore 895 * changing the matching behavior has no effect for creation modes. 896 * It is relevant for extraction or listing. 897 */ 898 archive_match_set_inclusion_recursion(bsdtar->matching, 899 !(bsdtar->flags & OPTFLAG_NO_SUBDIRS)); 900 901 /* Filename "-" implies stdio. */ 902 if (strcmp(bsdtar->filename, "-") == 0) 903 bsdtar->filename = NULL; 904 905 switch(bsdtar->mode) { 906 case 'c': 907 tar_mode_c(bsdtar); 908 break; 909 case 'r': 910 tar_mode_r(bsdtar); 911 break; 912 case 't': 913 tar_mode_t(bsdtar); 914 break; 915 case 'u': 916 tar_mode_u(bsdtar); 917 break; 918 case 'x': 919 tar_mode_x(bsdtar); 920 break; 921 } 922 923 archive_match_free(bsdtar->matching); 924 #if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H) 925 cleanup_substitution(bsdtar); 926 #endif 927 cset_free(bsdtar->cset); 928 passphrase_free(bsdtar->ppbuff); 929 930 if (bsdtar->return_value != 0) 931 lafe_warnc(0, 932 "Error exit delayed from previous errors."); 933 return (bsdtar->return_value); 934 } 935 936 static void 937 set_mode(struct bsdtar *bsdtar, char opt) 938 { 939 if (bsdtar->mode != '\0' && bsdtar->mode != opt) 940 lafe_errc(1, 0, 941 "Can't specify both -%c and -%c", opt, bsdtar->mode); 942 bsdtar->mode = opt; 943 } 944 945 /* 946 * Verify that the mode is correct. 947 */ 948 static void 949 only_mode(struct bsdtar *bsdtar, const char *opt, const char *valid_modes) 950 { 951 if (strchr(valid_modes, bsdtar->mode) == NULL) 952 lafe_errc(1, 0, 953 "Option %s is not permitted in mode -%c", 954 opt, bsdtar->mode); 955 } 956 957 958 void 959 usage(void) 960 { 961 const char *p; 962 963 p = lafe_getprogname(); 964 965 fprintf(stderr, "Usage:\n"); 966 fprintf(stderr, " List: %s -tf <archive-filename>\n", p); 967 fprintf(stderr, " Extract: %s -xf <archive-filename>\n", p); 968 fprintf(stderr, " Create: %s -cf <archive-filename> [filenames...]\n", p); 969 fprintf(stderr, " Help: %s --help\n", p); 970 exit(1); 971 } 972 973 static void 974 version(void) 975 { 976 printf("bsdtar %s - %s \n", 977 BSDTAR_VERSION_STRING, 978 archive_version_details()); 979 exit(0); 980 } 981 982 static const char *long_help_msg = 983 "First option must be a mode specifier:\n" 984 " -c Create -r Add/Replace -t List -u Update -x Extract\n" 985 "Common Options:\n" 986 " -b # Use # 512-byte records per I/O block\n" 987 " -f <filename> Location of archive (default " _PATH_DEFTAPE ")\n" 988 " -v Verbose\n" 989 " -w Interactive\n" 990 "Create: %p -c [options] [<file> | <dir> | @<archive> | -C <dir> ]\n" 991 " <file>, <dir> add these items to archive\n" 992 " -z, -j, -J, --lzma Compress archive with gzip/bzip2/xz/lzma\n" 993 " --format {ustar|pax|cpio|shar} Select archive format\n" 994 " --exclude <pattern> Skip files that match pattern\n" 995 " -C <dir> Change to <dir> before processing remaining files\n" 996 " @<archive> Add entries from <archive> to output\n" 997 "List: %p -t [options] [<patterns>]\n" 998 " <patterns> If specified, list only entries that match\n" 999 "Extract: %p -x [options] [<patterns>]\n" 1000 " <patterns> If specified, extract only entries that match\n" 1001 " -k Keep (don't overwrite) existing files\n" 1002 " -m Don't restore modification times\n" 1003 " -O Write entries to stdout, don't restore to disk\n" 1004 " -p Restore permissions (including ACLs, owner, file flags)\n"; 1005 1006 1007 /* 1008 * Note that the word 'bsdtar' will always appear in the first line 1009 * of output. 1010 * 1011 * In particular, /bin/sh scripts that need to test for the presence 1012 * of bsdtar can use the following template: 1013 * 1014 * if (tar --help 2>&1 | grep bsdtar >/dev/null 2>&1 ) then \ 1015 * echo bsdtar; else echo not bsdtar; fi 1016 */ 1017 static void 1018 long_help(void) 1019 { 1020 const char *prog; 1021 const char *p; 1022 1023 prog = lafe_getprogname(); 1024 1025 fflush(stderr); 1026 1027 p = (strcmp(prog,"bsdtar") != 0) ? "(bsdtar)" : ""; 1028 printf("%s%s: manipulate archive files\n", prog, p); 1029 1030 for (p = long_help_msg; *p != '\0'; p++) { 1031 if (*p == '%') { 1032 if (p[1] == 'p') { 1033 fputs(prog, stdout); 1034 p++; 1035 } else 1036 putchar('%'); 1037 } else 1038 putchar(*p); 1039 } 1040 version(); 1041 } 1042