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: src/usr.bin/tar/bsdtar.c,v 1.93 2008/11/08 04:43:24 kientzle Exp $"); 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 #if ARCHIVE_VERSION_NUMBER < 4000000 && !defined(_PATH_DEFTAPE) 74 // Libarchive 4.0 and later will NOT define _PATH_DEFTAPE 75 // but will honor it if it's set in the build. 76 // Until then, we'll continue to set it by default on certain platforms: 77 #if defined(__linux) 78 #define _PATH_DEFTAPE "/dev/st0" 79 #elif defined(_WIN32) && !defined(__CYGWIN__) 80 #define _PATH_DEFTAPE "\\\\.\\tape0" 81 #elif !defined(__APPLE__) 82 #define _PATH_DEFTAPE "/dev/tape" 83 #endif 84 #endif 85 86 #define _PATH_STDIO "-" 87 88 #ifdef __MINGW32__ 89 int _CRT_glob = 0; /* Disable broken CRT globbing. */ 90 #endif 91 92 #if defined(HAVE_SIGACTION) && (defined(SIGINFO) || defined(SIGUSR1)) 93 static volatile int siginfo_occurred; 94 95 static void 96 siginfo_handler(int sig) 97 { 98 (void)sig; /* UNUSED */ 99 siginfo_occurred = 1; 100 } 101 102 int 103 need_report(void) 104 { 105 int r = siginfo_occurred; 106 siginfo_occurred = 0; 107 return (r); 108 } 109 #else 110 int 111 need_report(void) 112 { 113 return (0); 114 } 115 #endif 116 117 static void long_help(void) __LA_DEAD; 118 static void only_mode(struct bsdtar *, const char *opt, 119 const char *valid); 120 static void set_mode(struct bsdtar *, char opt); 121 static void version(void) __LA_DEAD; 122 123 /* A basic set of security flags to request from libarchive. */ 124 #define SECURITY \ 125 (ARCHIVE_EXTRACT_SECURE_SYMLINKS \ 126 | ARCHIVE_EXTRACT_SECURE_NODOTDOT) 127 128 static char const * const vcs_files[] = { 129 /* CVS */ 130 "CVS", ".cvsignore", 131 /* RCS */ 132 "RCS", 133 /* SCCS */ 134 "SCCS", 135 /* SVN */ 136 ".svn", 137 /* git */ 138 ".git", ".gitignore", ".gitattributes", ".gitmodules", 139 /* Arch */ 140 ".arch-ids", "{arch}", "=RELEASE-ID", "=meta-update", "=update", 141 /* Bazaar */ 142 ".bzr", ".bzrignore", ".bzrtags", 143 /* Mercurial */ 144 ".hg", ".hgignore", ".hgtags", 145 /* darcs */ 146 "_darcs", 147 NULL 148 }; 149 150 int 151 main(int argc, char **argv) 152 { 153 struct bsdtar *bsdtar, bsdtar_storage; 154 int opt, t; 155 char compression, compression2; 156 const char *compression_name, *compression2_name; 157 const char *compress_program; 158 char *tptr; 159 char possible_help_request; 160 char buff[16]; 161 162 /* 163 * Use a pointer for consistency, but stack-allocated storage 164 * for ease of cleanup. 165 */ 166 bsdtar = &bsdtar_storage; 167 memset(bsdtar, 0, sizeof(*bsdtar)); 168 bsdtar->fd = -1; /* Mark as "unused" */ 169 bsdtar->gid = -1; 170 bsdtar->uid = -1; 171 bsdtar->flags = 0; 172 compression = compression2 = '\0'; 173 compression_name = compression2_name = NULL; 174 compress_program = NULL; 175 176 #if defined(HAVE_SIGACTION) 177 { /* Set up signal handling. */ 178 struct sigaction sa; 179 sa.sa_handler = siginfo_handler; 180 sigemptyset(&sa.sa_mask); 181 sa.sa_flags = 0; 182 #ifdef SIGINFO 183 if (sigaction(SIGINFO, &sa, NULL)) 184 lafe_errc(1, errno, "sigaction(SIGINFO) failed"); 185 #endif 186 #ifdef SIGUSR1 187 /* ... and treat SIGUSR1 the same way as SIGINFO. */ 188 if (sigaction(SIGUSR1, &sa, NULL)) 189 lafe_errc(1, errno, "sigaction(SIGUSR1) failed"); 190 #endif 191 #ifdef SIGPIPE 192 /* Ignore SIGPIPE signals. */ 193 sa.sa_handler = SIG_IGN; 194 sigaction(SIGPIPE, &sa, NULL); 195 #endif 196 } 197 #endif 198 199 /* Set lafe_progname before calling lafe_warnc. */ 200 lafe_setprogname(*argv, "bsdtar"); 201 202 #if HAVE_SETLOCALE 203 if (setlocale(LC_ALL, "") == NULL) 204 lafe_warnc(0, "Failed to set default locale"); 205 #endif 206 #if defined(HAVE_NL_LANGINFO) && defined(HAVE_D_MD_ORDER) 207 bsdtar->day_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 208 #endif 209 possible_help_request = 0; 210 211 /* Look up uid of current user for future reference */ 212 bsdtar->user_uid = geteuid(); 213 214 /* Default: open tape drive. */ 215 bsdtar->filename = getenv("TAPE"); 216 #if defined(_PATH_DEFTAPE) 217 if (bsdtar->filename == NULL) { 218 #if defined(_WIN32) && !defined(__CYGWIN__) 219 int tapeExists = !_access(_PATH_DEFTAPE, 0); 220 #else 221 int tapeExists = !access(_PATH_DEFTAPE, F_OK); 222 #endif 223 if (tapeExists) { 224 bsdtar->filename = _PATH_DEFTAPE; 225 } 226 } 227 #endif 228 if (bsdtar->filename == NULL) { 229 bsdtar->filename = _PATH_STDIO; 230 } 231 232 /* Default block size settings. */ 233 bsdtar->bytes_per_block = DEFAULT_BYTES_PER_BLOCK; 234 /* Allow library to default this unless user specifies -b. */ 235 bsdtar->bytes_in_last_block = -1; 236 237 /* Default: preserve mod time on extract */ 238 bsdtar->extract_flags = ARCHIVE_EXTRACT_TIME; 239 240 /* Default: Perform basic security checks. */ 241 bsdtar->extract_flags |= SECURITY; 242 243 #ifndef _WIN32 244 /* On POSIX systems, assume --same-owner and -p when run by 245 * the root user. This doesn't make any sense on Windows. */ 246 if (bsdtar->user_uid == 0) { 247 /* --same-owner */ 248 bsdtar->extract_flags |= ARCHIVE_EXTRACT_OWNER; 249 /* -p */ 250 bsdtar->extract_flags |= ARCHIVE_EXTRACT_PERM; 251 bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL; 252 bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR; 253 bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS; 254 bsdtar->extract_flags |= ARCHIVE_EXTRACT_MAC_METADATA; 255 } 256 #endif 257 258 /* 259 * Enable Mac OS "copyfile()" extension by default. 260 * This has no effect on other platforms. 261 */ 262 bsdtar->readdisk_flags |= ARCHIVE_READDISK_MAC_COPYFILE; 263 #ifdef COPYFILE_DISABLE_VAR 264 if (getenv(COPYFILE_DISABLE_VAR)) 265 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_MAC_COPYFILE; 266 #endif 267 #if defined(__APPLE__) 268 /* 269 * On Mac OS ACLs are archived with copyfile() (--mac-metadata) 270 * Translation to NFSv4 ACLs has to be requested explicitly with --acls 271 */ 272 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_ACL; 273 #endif 274 275 bsdtar->matching = archive_match_new(); 276 if (bsdtar->matching == NULL) 277 lafe_errc(1, errno, "Out of memory"); 278 bsdtar->cset = cset_new(); 279 if (bsdtar->cset == NULL) 280 lafe_errc(1, errno, "Out of memory"); 281 282 bsdtar->argv = argv; 283 bsdtar->argc = argc; 284 285 /* 286 * Comments following each option indicate where that option 287 * originated: SUSv2, POSIX, GNU tar, star, etc. If there's 288 * no such comment, then I don't know of anyone else who 289 * implements that option. 290 */ 291 while ((opt = bsdtar_getopt(bsdtar)) != -1) { 292 switch (opt) { 293 case 'a': /* GNU tar */ 294 bsdtar->flags |= OPTFLAG_AUTO_COMPRESS; 295 break; 296 case OPTION_ACLS: /* GNU tar */ 297 bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL; 298 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_NO_ACL; 299 bsdtar->flags |= OPTFLAG_ACLS; 300 break; 301 case 'B': /* GNU tar */ 302 /* libarchive doesn't need this; just ignore it. */ 303 break; 304 case 'b': /* SUSv2 */ 305 errno = 0; 306 tptr = NULL; 307 t = (int)strtol(bsdtar->argument, &tptr, 10); 308 if (errno || t <= 0 || t > 8192 || 309 *(bsdtar->argument) == '\0' || tptr == NULL || 310 *tptr != '\0') { 311 lafe_errc(1, 0, "Invalid or out of range " 312 "(1..8192) argument to -b"); 313 } 314 bsdtar->bytes_per_block = 512 * t; 315 /* Explicit -b forces last block size. */ 316 bsdtar->bytes_in_last_block = bsdtar->bytes_per_block; 317 break; 318 case OPTION_B64ENCODE: 319 if (compression2 != '\0') 320 lafe_errc(1, 0, 321 "Can't specify both --uuencode and " 322 "--b64encode"); 323 compression2 = opt; 324 compression2_name = "b64encode"; 325 break; 326 case 'C': /* GNU tar */ 327 if (strlen(bsdtar->argument) == 0) 328 lafe_errc(1, 0, 329 "Meaningless option: -C ''"); 330 331 set_chdir(bsdtar, bsdtar->argument); 332 break; 333 case 'c': /* SUSv2 */ 334 set_mode(bsdtar, opt); 335 break; 336 case OPTION_CHECK_LINKS: /* GNU tar */ 337 bsdtar->flags |= OPTFLAG_WARN_LINKS; 338 break; 339 case OPTION_CHROOT: /* NetBSD */ 340 bsdtar->flags |= OPTFLAG_CHROOT; 341 break; 342 case OPTION_CLEAR_NOCHANGE_FFLAGS: 343 bsdtar->extract_flags |= 344 ARCHIVE_EXTRACT_CLEAR_NOCHANGE_FFLAGS; 345 break; 346 case OPTION_EXCLUDE: /* GNU tar */ 347 if (archive_match_exclude_pattern( 348 bsdtar->matching, bsdtar->argument) != ARCHIVE_OK) 349 lafe_errc(1, 0, 350 "Couldn't exclude %s\n", bsdtar->argument); 351 break; 352 case OPTION_EXCLUDE_VCS: /* GNU tar */ 353 for(t=0; vcs_files[t]; t++) { 354 if (archive_match_exclude_pattern( 355 bsdtar->matching, 356 vcs_files[t]) != ARCHIVE_OK) 357 lafe_errc(1, 0, "Couldn't " 358 "exclude %s\n", vcs_files[t]); 359 } 360 break; 361 case OPTION_FFLAGS: 362 bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS; 363 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_NO_FFLAGS; 364 bsdtar->flags |= OPTFLAG_FFLAGS; 365 break; 366 case OPTION_FORMAT: /* GNU tar, others */ 367 cset_set_format(bsdtar->cset, bsdtar->argument); 368 break; 369 case 'f': /* SUSv2 */ 370 bsdtar->filename = bsdtar->argument; 371 break; 372 case OPTION_GID: /* cpio */ 373 errno = 0; 374 tptr = NULL; 375 t = (int)strtol(bsdtar->argument, &tptr, 10); 376 if (errno || t < 0 || *(bsdtar->argument) == '\0' || 377 tptr == NULL || *tptr != '\0') { 378 lafe_errc(1, 0, "Invalid argument to --gid"); 379 } 380 bsdtar->gid = t; 381 break; 382 case OPTION_GNAME: /* cpio */ 383 bsdtar->gname = bsdtar->argument; 384 break; 385 case OPTION_GRZIP: 386 if (compression != '\0') 387 lafe_errc(1, 0, 388 "Can't specify both -%c and -%c", opt, 389 compression); 390 compression = opt; 391 compression_name = "grzip"; 392 break; 393 case 'H': /* BSD convention */ 394 bsdtar->symlink_mode = 'H'; 395 break; 396 case 'h': /* Linux Standards Base, gtar; synonym for -L */ 397 bsdtar->symlink_mode = 'L'; 398 /* Hack: -h by itself is the "help" command. */ 399 possible_help_request = 1; 400 break; 401 case OPTION_HELP: /* GNU tar, others */ 402 long_help(); 403 exit(0); 404 break; 405 case OPTION_HFS_COMPRESSION: /* Mac OS X v10.6 or later */ 406 bsdtar->extract_flags |= 407 ARCHIVE_EXTRACT_HFS_COMPRESSION_FORCED; 408 break; 409 case OPTION_IGNORE_ZEROS: 410 bsdtar->flags |= OPTFLAG_IGNORE_ZEROS; 411 break; 412 case 'I': /* GNU tar */ 413 /* 414 * TODO: Allow 'names' to come from an archive, 415 * not just a text file. Design a good UI for 416 * allowing names and mode/owner to be read 417 * from an archive, with contents coming from 418 * disk. This can be used to "refresh" an 419 * archive or to design archives with special 420 * permissions without having to create those 421 * permissions on disk. 422 */ 423 bsdtar->names_from_file = bsdtar->argument; 424 break; 425 case OPTION_INCLUDE: 426 /* 427 * No one else has the @archive extension, so 428 * no one else needs this to filter entries 429 * when transforming archives. 430 */ 431 if (archive_match_include_pattern(bsdtar->matching, 432 bsdtar->argument) != ARCHIVE_OK) 433 lafe_errc(1, 0, 434 "Failed to add %s to inclusion list", 435 bsdtar->argument); 436 break; 437 case 'j': /* GNU tar */ 438 if (compression != '\0') 439 lafe_errc(1, 0, 440 "Can't specify both -%c and -%c", opt, 441 compression); 442 compression = opt; 443 compression_name = "bzip2"; 444 break; 445 case 'J': /* GNU tar 1.21 and later */ 446 if (compression != '\0') 447 lafe_errc(1, 0, 448 "Can't specify both -%c and -%c", opt, 449 compression); 450 compression = opt; 451 compression_name = "xz"; 452 break; 453 case 'k': /* GNU tar */ 454 bsdtar->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE; 455 break; 456 case OPTION_KEEP_NEWER_FILES: /* GNU tar */ 457 bsdtar->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER; 458 break; 459 case 'L': /* BSD convention */ 460 bsdtar->symlink_mode = 'L'; 461 break; 462 case 'l': /* SUSv2 and GNU tar beginning with 1.16 */ 463 /* GNU tar 1.13 used -l for --one-file-system */ 464 bsdtar->flags |= OPTFLAG_WARN_LINKS; 465 break; 466 case OPTION_LRZIP: 467 case OPTION_LZ4: 468 case OPTION_LZIP: /* GNU tar beginning with 1.23 */ 469 case OPTION_LZMA: /* GNU tar beginning with 1.20 */ 470 case OPTION_LZOP: /* GNU tar beginning with 1.21 */ 471 case OPTION_ZSTD: 472 if (compression != '\0') 473 lafe_errc(1, 0, 474 "Can't specify both -%c and -%c", opt, 475 compression); 476 compression = opt; 477 switch (opt) { 478 case OPTION_LRZIP: compression_name = "lrzip"; break; 479 case OPTION_LZ4: compression_name = "lz4"; break; 480 case OPTION_LZIP: compression_name = "lzip"; break; 481 case OPTION_LZMA: compression_name = "lzma"; break; 482 case OPTION_LZOP: compression_name = "lzop"; break; 483 case OPTION_ZSTD: compression_name = "zstd"; break; 484 } 485 break; 486 case 'm': /* SUSv2 */ 487 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_TIME; 488 break; 489 case OPTION_MAC_METADATA: /* Mac OS X */ 490 bsdtar->readdisk_flags |= ARCHIVE_READDISK_MAC_COPYFILE; 491 bsdtar->extract_flags |= ARCHIVE_EXTRACT_MAC_METADATA; 492 bsdtar->flags |= OPTFLAG_MAC_METADATA; 493 break; 494 case 'n': /* GNU tar */ 495 bsdtar->flags |= OPTFLAG_NO_SUBDIRS; 496 break; 497 /* 498 * Selecting files by time: 499 * --newer-?time='date' Only files newer than 'date' 500 * --newer-?time-than='file' Only files newer than time 501 * on specified file (useful for incremental backups) 502 */ 503 case OPTION_NEWER_CTIME: /* GNU tar */ 504 if (archive_match_include_date(bsdtar->matching, 505 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_NEWER, 506 bsdtar->argument) != ARCHIVE_OK) 507 lafe_errc(1, 0, "Error : %s", 508 archive_error_string(bsdtar->matching)); 509 break; 510 case OPTION_NEWER_CTIME_THAN: 511 if (archive_match_include_file_time(bsdtar->matching, 512 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_NEWER, 513 bsdtar->argument) != ARCHIVE_OK) 514 lafe_errc(1, 0, "Error : %s", 515 archive_error_string(bsdtar->matching)); 516 break; 517 case OPTION_NEWER_MTIME: /* GNU tar */ 518 if (archive_match_include_date(bsdtar->matching, 519 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_NEWER, 520 bsdtar->argument) != ARCHIVE_OK) 521 lafe_errc(1, 0, "Error : %s", 522 archive_error_string(bsdtar->matching)); 523 break; 524 case OPTION_NEWER_MTIME_THAN: 525 if (archive_match_include_file_time(bsdtar->matching, 526 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_NEWER, 527 bsdtar->argument) != ARCHIVE_OK) 528 lafe_errc(1, 0, "Error : %s", 529 archive_error_string(bsdtar->matching)); 530 break; 531 case OPTION_NODUMP: /* star */ 532 bsdtar->readdisk_flags |= ARCHIVE_READDISK_HONOR_NODUMP; 533 break; 534 case OPTION_NOPRESERVE_HFS_COMPRESSION: 535 /* Mac OS X v10.6 or later */ 536 bsdtar->extract_flags |= 537 ARCHIVE_EXTRACT_NO_HFS_COMPRESSION; 538 break; 539 case OPTION_NO_ACLS: /* GNU tar */ 540 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_ACL; 541 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_ACL; 542 bsdtar->flags |= OPTFLAG_NO_ACLS; 543 break; 544 case OPTION_NO_FFLAGS: 545 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_FFLAGS; 546 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_FFLAGS; 547 bsdtar->flags |= OPTFLAG_NO_FFLAGS; 548 break; 549 case OPTION_NO_MAC_METADATA: /* Mac OS X */ 550 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_MAC_COPYFILE; 551 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_MAC_METADATA; 552 bsdtar->flags |= OPTFLAG_NO_MAC_METADATA; 553 break; 554 case OPTION_NO_READ_SPARSE: 555 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_SPARSE; 556 bsdtar->flags |= OPTFLAG_NO_READ_SPARSE; 557 break; 558 case OPTION_NO_SAFE_WRITES: 559 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_SAFE_WRITES; 560 break; 561 case OPTION_NO_SAME_OWNER: /* GNU tar */ 562 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_OWNER; 563 break; 564 case OPTION_NO_SAME_PERMISSIONS: /* GNU tar */ 565 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_PERM; 566 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_ACL; 567 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_XATTR; 568 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_FFLAGS; 569 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_MAC_METADATA; 570 break; 571 case OPTION_NO_XATTRS: /* GNU tar */ 572 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_XATTR; 573 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_XATTR; 574 bsdtar->flags |= OPTFLAG_NO_XATTRS; 575 break; 576 case OPTION_NULL: /* GNU tar */ 577 bsdtar->flags |= OPTFLAG_NULL; 578 break; 579 case OPTION_NUMERIC_OWNER: /* GNU tar */ 580 bsdtar->uname = ""; 581 bsdtar->gname = ""; 582 bsdtar->flags |= OPTFLAG_NUMERIC_OWNER; 583 break; 584 case 'O': /* GNU tar */ 585 bsdtar->flags |= OPTFLAG_STDOUT; 586 break; 587 case 'o': /* SUSv2 and GNU conflict here, but not fatally */ 588 bsdtar->flags |= OPTFLAG_O; 589 break; 590 /* 591 * Selecting files by time: 592 * --older-?time='date' Only files older than 'date' 593 * --older-?time-than='file' Only files older than time 594 * on specified file 595 */ 596 case OPTION_OLDER_CTIME: 597 if (archive_match_include_date(bsdtar->matching, 598 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_OLDER, 599 bsdtar->argument) != ARCHIVE_OK) 600 lafe_errc(1, 0, "Error : %s", 601 archive_error_string(bsdtar->matching)); 602 break; 603 case OPTION_OLDER_CTIME_THAN: 604 if (archive_match_include_file_time(bsdtar->matching, 605 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_OLDER, 606 bsdtar->argument) != ARCHIVE_OK) 607 lafe_errc(1, 0, "Error : %s", 608 archive_error_string(bsdtar->matching)); 609 break; 610 case OPTION_OLDER_MTIME: 611 if (archive_match_include_date(bsdtar->matching, 612 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_OLDER, 613 bsdtar->argument) != ARCHIVE_OK) 614 lafe_errc(1, 0, "Error : %s", 615 archive_error_string(bsdtar->matching)); 616 break; 617 case OPTION_OLDER_MTIME_THAN: 618 if (archive_match_include_file_time(bsdtar->matching, 619 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_OLDER, 620 bsdtar->argument) != ARCHIVE_OK) 621 lafe_errc(1, 0, "Error : %s", 622 archive_error_string(bsdtar->matching)); 623 break; 624 case OPTION_ONE_FILE_SYSTEM: /* GNU tar */ 625 bsdtar->readdisk_flags |= 626 ARCHIVE_READDISK_NO_TRAVERSE_MOUNTS; 627 break; 628 case OPTION_OPTIONS: 629 bsdtar->option_options = bsdtar->argument; 630 break; 631 #if 0 632 /* 633 * The common BSD -P option is not necessary, since 634 * our default is to archive symlinks, not follow 635 * them. This is convenient, as -P conflicts with GNU 636 * tar anyway. 637 */ 638 case 'P': /* BSD convention */ 639 /* Default behavior, no option necessary. */ 640 break; 641 #endif 642 case 'P': /* GNU tar */ 643 bsdtar->extract_flags &= ~SECURITY; 644 bsdtar->flags |= OPTFLAG_ABSOLUTE_PATHS; 645 break; 646 case 'p': /* GNU tar, star */ 647 bsdtar->extract_flags |= ARCHIVE_EXTRACT_PERM; 648 bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL; 649 bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR; 650 bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS; 651 bsdtar->extract_flags |= ARCHIVE_EXTRACT_MAC_METADATA; 652 break; 653 case OPTION_PASSPHRASE: 654 bsdtar->passphrase = bsdtar->argument; 655 break; 656 case OPTION_POSIX: /* GNU tar */ 657 cset_set_format(bsdtar->cset, "pax"); 658 break; 659 case 'q': /* FreeBSD GNU tar --fast-read, NetBSD -q */ 660 bsdtar->flags |= OPTFLAG_FAST_READ; 661 break; 662 case 'r': /* SUSv2 */ 663 set_mode(bsdtar, opt); 664 break; 665 case OPTION_READ_SPARSE: 666 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_NO_SPARSE; 667 bsdtar->flags |= OPTFLAG_READ_SPARSE; 668 break; 669 case 'S': /* NetBSD pax-as-tar */ 670 bsdtar->extract_flags |= ARCHIVE_EXTRACT_SPARSE; 671 break; 672 case 's': /* NetBSD pax-as-tar */ 673 #if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H) 674 add_substitution(bsdtar, bsdtar->argument); 675 #else 676 lafe_warnc(0, 677 "-s is not supported by this version of bsdtar"); 678 usage(); 679 #endif 680 break; 681 case OPTION_SAFE_WRITES: 682 bsdtar->extract_flags |= ARCHIVE_EXTRACT_SAFE_WRITES; 683 break; 684 case OPTION_SAME_OWNER: /* GNU tar */ 685 bsdtar->extract_flags |= ARCHIVE_EXTRACT_OWNER; 686 break; 687 case OPTION_STRIP_COMPONENTS: /* GNU tar 1.15 */ 688 errno = 0; 689 tptr = NULL; 690 t = (int)strtol(bsdtar->argument, &tptr, 10); 691 if (errno || t < 0 || *(bsdtar->argument) == '\0' || 692 tptr == NULL || *tptr != '\0') { 693 lafe_errc(1, 0, "Invalid argument to " 694 "--strip-components"); 695 } 696 bsdtar->strip_components = t; 697 break; 698 case 'T': /* GNU tar */ 699 bsdtar->names_from_file = bsdtar->argument; 700 break; 701 case 't': /* SUSv2 */ 702 set_mode(bsdtar, opt); 703 bsdtar->verbose++; 704 break; 705 case OPTION_TOTALS: /* GNU tar */ 706 bsdtar->flags |= OPTFLAG_TOTALS; 707 break; 708 case 'U': /* GNU tar */ 709 bsdtar->extract_flags |= ARCHIVE_EXTRACT_UNLINK; 710 bsdtar->flags |= OPTFLAG_UNLINK_FIRST; 711 break; 712 case 'u': /* SUSv2 */ 713 set_mode(bsdtar, opt); 714 break; 715 case OPTION_UID: /* cpio */ 716 errno = 0; 717 tptr = NULL; 718 t = (int)strtol(bsdtar->argument, &tptr, 10); 719 if (errno || t < 0 || *(bsdtar->argument) == '\0' || 720 tptr == NULL || *tptr != '\0') { 721 lafe_errc(1, 0, "Invalid argument to --uid"); 722 } 723 bsdtar->uid = t; 724 break; 725 case OPTION_UNAME: /* cpio */ 726 bsdtar->uname = bsdtar->argument; 727 break; 728 case OPTION_UUENCODE: 729 if (compression2 != '\0') 730 lafe_errc(1, 0, 731 "Can't specify both --uuencode and " 732 "--b64encode"); 733 compression2 = opt; 734 compression2_name = "uuencode"; 735 break; 736 case 'v': /* SUSv2 */ 737 bsdtar->verbose++; 738 break; 739 case OPTION_VERSION: /* GNU convention */ 740 version(); 741 break; 742 #if 0 743 /* 744 * The -W longopt feature is handled inside of 745 * bsdtar_getopt(), so -W is not available here. 746 */ 747 case 'W': /* Obscure GNU convention. */ 748 break; 749 #endif 750 case 'w': /* SUSv2 */ 751 bsdtar->flags |= OPTFLAG_INTERACTIVE; 752 break; 753 case 'X': /* GNU tar */ 754 if (archive_match_exclude_pattern_from_file( 755 bsdtar->matching, bsdtar->argument, 0) 756 != ARCHIVE_OK) 757 lafe_errc(1, 0, "Error : %s", 758 archive_error_string(bsdtar->matching)); 759 break; 760 case 'x': /* SUSv2 */ 761 set_mode(bsdtar, opt); 762 break; 763 case OPTION_XATTRS: /* GNU tar */ 764 bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR; 765 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_NO_XATTR; 766 bsdtar->flags |= OPTFLAG_XATTRS; 767 break; 768 case 'y': /* FreeBSD version of GNU tar */ 769 if (compression != '\0') 770 lafe_errc(1, 0, 771 "Can't specify both -%c and -%c", opt, 772 compression); 773 compression = opt; 774 compression_name = "bzip2"; 775 break; 776 case 'Z': /* GNU tar */ 777 if (compression != '\0') 778 lafe_errc(1, 0, 779 "Can't specify both -%c and -%c", opt, 780 compression); 781 compression = opt; 782 compression_name = "compress"; 783 break; 784 case 'z': /* GNU tar, star, many others */ 785 if (compression != '\0') 786 lafe_errc(1, 0, 787 "Can't specify both -%c and -%c", opt, 788 compression); 789 compression = opt; 790 compression_name = "gzip"; 791 break; 792 case OPTION_USE_COMPRESS_PROGRAM: 793 compress_program = bsdtar->argument; 794 break; 795 default: 796 usage(); 797 } 798 } 799 800 /* 801 * Sanity-check options. 802 */ 803 804 /* If no "real" mode was specified, treat -h as --help. */ 805 if ((bsdtar->mode == '\0') && possible_help_request) { 806 long_help(); 807 exit(0); 808 } 809 810 /* Otherwise, a mode is required. */ 811 if (bsdtar->mode == '\0') 812 lafe_errc(1, 0, 813 "Must specify one of -c, -r, -t, -u, -x"); 814 815 /* Check boolean options only permitted in certain modes. */ 816 if (bsdtar->flags & OPTFLAG_AUTO_COMPRESS) { 817 only_mode(bsdtar, "-a", "cx"); 818 if (bsdtar->mode == 'x') { 819 bsdtar->flags &= ~OPTFLAG_AUTO_COMPRESS; 820 lafe_warnc(0, 821 "Ignoring option -a in mode -x"); 822 } 823 } 824 if (bsdtar->readdisk_flags & ARCHIVE_READDISK_NO_TRAVERSE_MOUNTS) 825 only_mode(bsdtar, "--one-file-system", "cru"); 826 if (bsdtar->flags & OPTFLAG_FAST_READ) 827 only_mode(bsdtar, "--fast-read", "xt"); 828 if (bsdtar->extract_flags & ARCHIVE_EXTRACT_HFS_COMPRESSION_FORCED) 829 only_mode(bsdtar, "--hfsCompression", "x"); 830 if (bsdtar->extract_flags & ARCHIVE_EXTRACT_NO_HFS_COMPRESSION) 831 only_mode(bsdtar, "--nopreserveHFSCompression", "x"); 832 if (bsdtar->readdisk_flags & ARCHIVE_READDISK_HONOR_NODUMP) 833 only_mode(bsdtar, "--nodump", "cru"); 834 if (bsdtar->flags & OPTFLAG_ACLS) 835 only_mode(bsdtar, "--acls", "crux"); 836 if (bsdtar->flags & OPTFLAG_NO_ACLS) 837 only_mode(bsdtar, "--no-acls", "crux"); 838 if (bsdtar->flags & OPTFLAG_XATTRS) 839 only_mode(bsdtar, "--xattrs", "crux"); 840 if (bsdtar->flags & OPTFLAG_NO_XATTRS) 841 only_mode(bsdtar, "--no-xattrs", "crux"); 842 if (bsdtar->flags & OPTFLAG_FFLAGS) 843 only_mode(bsdtar, "--fflags", "crux"); 844 if (bsdtar->flags & OPTFLAG_NO_FFLAGS) 845 only_mode(bsdtar, "--no-fflags", "crux"); 846 if (bsdtar->flags & OPTFLAG_MAC_METADATA) 847 only_mode(bsdtar, "--mac-metadata", "crux"); 848 if (bsdtar->flags & OPTFLAG_NO_MAC_METADATA) 849 only_mode(bsdtar, "--no-mac-metadata", "crux"); 850 if (bsdtar->flags & OPTFLAG_O) { 851 switch (bsdtar->mode) { 852 case 'c': 853 /* 854 * In GNU tar, -o means "old format." The 855 * "ustar" format is the closest thing 856 * supported by libarchive. 857 */ 858 cset_set_format(bsdtar->cset, "ustar"); 859 /* TODO: bsdtar->create_format = "v7"; */ 860 break; 861 case 'x': 862 /* POSIX-compatible behavior. */ 863 bsdtar->flags |= OPTFLAG_NO_OWNER; 864 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_OWNER; 865 break; 866 default: 867 only_mode(bsdtar, "-o", "xc"); 868 break; 869 } 870 } 871 if (bsdtar->flags & OPTFLAG_STDOUT) 872 only_mode(bsdtar, "-O", "xt"); 873 if (bsdtar->flags & OPTFLAG_UNLINK_FIRST) 874 only_mode(bsdtar, "-U", "x"); 875 if (bsdtar->flags & OPTFLAG_WARN_LINKS) 876 only_mode(bsdtar, "--check-links", "cr"); 877 878 if ((bsdtar->flags & OPTFLAG_AUTO_COMPRESS) && 879 cset_auto_compress(bsdtar->cset, bsdtar->filename)) { 880 /* Ignore specified compressions if auto-compress works. */ 881 compression = '\0'; 882 compression2 = '\0'; 883 } 884 /* Check other parameters only permitted in certain modes. */ 885 if (compress_program != NULL) { 886 only_mode(bsdtar, "--use-compress-program", "cxt"); 887 cset_add_filter_program(bsdtar->cset, compress_program); 888 /* Ignore specified compressions. */ 889 compression = '\0'; 890 compression2 = '\0'; 891 } 892 if (compression != '\0') { 893 switch (compression) { 894 case 'J': case 'j': case 'y': case 'Z': case 'z': 895 strcpy(buff, "-?"); 896 buff[1] = compression; 897 break; 898 default: 899 strcpy(buff, "--"); 900 strcat(buff, compression_name); 901 break; 902 } 903 only_mode(bsdtar, buff, "cxt"); 904 cset_add_filter(bsdtar->cset, compression_name); 905 } 906 if (compression2 != '\0') { 907 strcpy(buff, "--"); 908 strcat(buff, compression2_name); 909 only_mode(bsdtar, buff, "cxt"); 910 cset_add_filter(bsdtar->cset, compression2_name); 911 } 912 if (cset_get_format(bsdtar->cset) != NULL) 913 only_mode(bsdtar, "--format", "cru"); 914 if (bsdtar->symlink_mode != '\0') { 915 strcpy(buff, "-?"); 916 buff[1] = bsdtar->symlink_mode; 917 only_mode(bsdtar, buff, "cru"); 918 } 919 920 /* 921 * When creating an archive from a directory tree, the directory 922 * walking code will already avoid entering directories when 923 * recursive inclusion of directory content is disabled, therefore 924 * changing the matching behavior has no effect for creation modes. 925 * It is relevant for extraction or listing. 926 */ 927 archive_match_set_inclusion_recursion(bsdtar->matching, 928 !(bsdtar->flags & OPTFLAG_NO_SUBDIRS)); 929 930 /* Filename "-" implies stdio. */ 931 if (strcmp(bsdtar->filename, "-") == 0) 932 bsdtar->filename = NULL; 933 934 switch(bsdtar->mode) { 935 case 'c': 936 tar_mode_c(bsdtar); 937 break; 938 case 'r': 939 tar_mode_r(bsdtar); 940 break; 941 case 't': 942 tar_mode_t(bsdtar); 943 break; 944 case 'u': 945 tar_mode_u(bsdtar); 946 break; 947 case 'x': 948 tar_mode_x(bsdtar); 949 break; 950 } 951 952 archive_match_free(bsdtar->matching); 953 #if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H) 954 cleanup_substitution(bsdtar); 955 #endif 956 cset_free(bsdtar->cset); 957 passphrase_free(bsdtar->ppbuff); 958 959 if (bsdtar->return_value != 0) 960 lafe_warnc(0, 961 "Error exit delayed from previous errors."); 962 return (bsdtar->return_value); 963 } 964 965 static void 966 set_mode(struct bsdtar *bsdtar, char opt) 967 { 968 if (bsdtar->mode != '\0' && bsdtar->mode != opt) 969 lafe_errc(1, 0, 970 "Can't specify both -%c and -%c", opt, bsdtar->mode); 971 bsdtar->mode = opt; 972 } 973 974 /* 975 * Verify that the mode is correct. 976 */ 977 static void 978 only_mode(struct bsdtar *bsdtar, const char *opt, const char *valid_modes) 979 { 980 if (strchr(valid_modes, bsdtar->mode) == NULL) 981 lafe_errc(1, 0, 982 "Option %s is not permitted in mode -%c", 983 opt, bsdtar->mode); 984 } 985 986 987 void 988 usage(void) 989 { 990 const char *p; 991 992 p = lafe_getprogname(); 993 994 fprintf(stderr, "Usage:\n"); 995 fprintf(stderr, " List: %s -tf <archive-filename>\n", p); 996 fprintf(stderr, " Extract: %s -xf <archive-filename>\n", p); 997 fprintf(stderr, " Create: %s -cf <archive-filename> [filenames...]\n", p); 998 fprintf(stderr, " Help: %s --help\n", p); 999 exit(1); 1000 } 1001 1002 static void 1003 version(void) 1004 { 1005 printf("bsdtar %s - %s \n", 1006 BSDTAR_VERSION_STRING, 1007 archive_version_details()); 1008 exit(0); 1009 } 1010 1011 static const char *long_help_msg = 1012 "First option must be a mode specifier:\n" 1013 " -c Create -r Add/Replace -t List -u Update -x Extract\n" 1014 "Common Options:\n" 1015 " -b # Use # 512-byte records per I/O block\n" 1016 " -f <filename> Location of archive (default " _PATH_DEFTAPE ")\n" 1017 " -v Verbose\n" 1018 " -w Interactive\n" 1019 "Create: %p -c [options] [<file> | <dir> | @<archive> | -C <dir> ]\n" 1020 " <file>, <dir> add these items to archive\n" 1021 " -z, -j, -J, --lzma Compress archive with gzip/bzip2/xz/lzma\n" 1022 " --format {ustar|pax|cpio|shar} Select archive format\n" 1023 " --exclude <pattern> Skip files that match pattern\n" 1024 " -C <dir> Change to <dir> before processing remaining files\n" 1025 " @<archive> Add entries from <archive> to output\n" 1026 "List: %p -t [options] [<patterns>]\n" 1027 " <patterns> If specified, list only entries that match\n" 1028 "Extract: %p -x [options] [<patterns>]\n" 1029 " <patterns> If specified, extract only entries that match\n" 1030 " -k Keep (don't overwrite) existing files\n" 1031 " -m Don't restore modification times\n" 1032 " -O Write entries to stdout, don't restore to disk\n" 1033 " -p Restore permissions (including ACLs, owner, file flags)\n"; 1034 1035 1036 /* 1037 * Note that the word 'bsdtar' will always appear in the first line 1038 * of output. 1039 * 1040 * In particular, /bin/sh scripts that need to test for the presence 1041 * of bsdtar can use the following template: 1042 * 1043 * if (tar --help 2>&1 | grep bsdtar >/dev/null 2>&1 ) then \ 1044 * echo bsdtar; else echo not bsdtar; fi 1045 */ 1046 static void 1047 long_help(void) 1048 { 1049 const char *prog; 1050 const char *p; 1051 1052 prog = lafe_getprogname(); 1053 1054 fflush(stderr); 1055 1056 p = (strcmp(prog,"bsdtar") != 0) ? "(bsdtar)" : ""; 1057 printf("%s%s: manipulate archive files\n", prog, p); 1058 1059 for (p = long_help_msg; *p != '\0'; p++) { 1060 if (*p == '%') { 1061 if (p[1] == 'p') { 1062 fputs(prog, stdout); 1063 p++; 1064 } else 1065 putchar('%'); 1066 } else 1067 putchar(*p); 1068 } 1069 version(); 1070 } 1071