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 28 #ifdef HAVE_SYS_PARAM_H 29 #include <sys/param.h> 30 #endif 31 #ifdef HAVE_SYS_STAT_H 32 #include <sys/stat.h> 33 #endif 34 #ifdef HAVE_COPYFILE_H 35 #include <copyfile.h> 36 #endif 37 #ifdef HAVE_ERRNO_H 38 #include <errno.h> 39 #endif 40 #ifdef HAVE_FCNTL_H 41 #include <fcntl.h> 42 #endif 43 #ifdef HAVE_LANGINFO_H 44 #include <langinfo.h> 45 #endif 46 #ifdef HAVE_LOCALE_H 47 #include <locale.h> 48 #endif 49 #ifdef HAVE_PATHS_H 50 #include <paths.h> 51 #endif 52 #ifdef HAVE_SIGNAL_H 53 #include <signal.h> 54 #endif 55 #include <stdio.h> 56 #ifdef HAVE_STDLIB_H 57 #include <stdlib.h> 58 #endif 59 #ifdef HAVE_STRING_H 60 #include <string.h> 61 #endif 62 #ifdef HAVE_TIME_H 63 #include <time.h> 64 #endif 65 #ifdef HAVE_UNISTD_H 66 #include <unistd.h> 67 #endif 68 69 #include "bsdtar.h" 70 #include "err.h" 71 72 #if ARCHIVE_VERSION_NUMBER < 4000000 && !defined(_PATH_DEFTAPE) 73 // Libarchive 4.0 and later will NOT define _PATH_DEFTAPE 74 // but will honor it if it's set in the build. 75 // Until then, we'll continue to set it by default on certain platforms: 76 #if defined(__linux) 77 #define _PATH_DEFTAPE "/dev/st0" 78 #elif defined(_WIN32) && !defined(__CYGWIN__) 79 #define _PATH_DEFTAPE "\\\\.\\tape0" 80 #elif !defined(__APPLE__) 81 #define _PATH_DEFTAPE "/dev/tape" 82 #endif 83 #endif 84 85 #define _PATH_STDIO "-" 86 87 #ifdef __MINGW32__ 88 int _CRT_glob = 0; /* Disable broken CRT globbing. */ 89 #endif 90 91 #if defined(HAVE_SIGACTION) && (defined(SIGINFO) || defined(SIGUSR1)) 92 static volatile int siginfo_occurred; 93 94 static void 95 siginfo_handler(int sig) 96 { 97 (void)sig; /* UNUSED */ 98 siginfo_occurred = 1; 99 } 100 101 int 102 need_report(void) 103 { 104 int r = siginfo_occurred; 105 siginfo_occurred = 0; 106 return (r); 107 } 108 #else 109 int 110 need_report(void) 111 { 112 return (0); 113 } 114 #endif 115 116 static __LA_NORETURN void long_help(void); 117 static void only_mode(struct bsdtar *, const char *opt, 118 const char *valid); 119 static void set_mode(struct bsdtar *, char opt); 120 static __LA_NORETURN void version(void); 121 122 /* A basic set of security flags to request from libarchive. */ 123 #define SECURITY \ 124 (ARCHIVE_EXTRACT_SECURE_SYMLINKS \ 125 | ARCHIVE_EXTRACT_SECURE_NODOTDOT) 126 127 static char const * const vcs_files[] = { 128 /* CVS */ 129 "CVS", ".cvsignore", 130 /* RCS */ 131 "RCS", 132 /* SCCS */ 133 "SCCS", 134 /* SVN */ 135 ".svn", 136 /* git */ 137 ".git", ".gitignore", ".gitattributes", ".gitmodules", 138 /* Arch */ 139 ".arch-ids", "{arch}", "=RELEASE-ID", "=meta-update", "=update", 140 /* Bazaar */ 141 ".bzr", ".bzrignore", ".bzrtags", 142 /* Mercurial */ 143 ".hg", ".hgignore", ".hgtags", 144 /* darcs */ 145 "_darcs", 146 NULL 147 }; 148 149 int 150 main(int argc, char **argv) 151 { 152 struct bsdtar *bsdtar, bsdtar_storage; 153 int opt, t; 154 char compression, compression2; 155 const char *compression_name, *compression2_name; 156 const char *compress_program; 157 char *tptr, *uptr; 158 char possible_help_request; 159 char buff[16]; 160 161 /* 162 * Use a pointer for consistency, but stack-allocated storage 163 * for ease of cleanup. 164 */ 165 bsdtar = &bsdtar_storage; 166 memset(bsdtar, 0, sizeof(*bsdtar)); 167 bsdtar->fd = -1; /* Mark as "unused" */ 168 bsdtar->gid = -1; 169 bsdtar->uid = -1; 170 bsdtar->flags = 0; 171 compression = compression2 = '\0'; 172 compression_name = compression2_name = NULL; 173 compress_program = NULL; 174 175 #if defined(HAVE_SIGACTION) 176 { /* Set up signal handling. */ 177 struct sigaction sa; 178 sa.sa_handler = siginfo_handler; 179 sigemptyset(&sa.sa_mask); 180 sa.sa_flags = 0; 181 #ifdef SIGINFO 182 if (sigaction(SIGINFO, &sa, NULL)) 183 lafe_errc(1, errno, "sigaction(SIGINFO) failed"); 184 #endif 185 #ifdef SIGUSR1 186 /* ... and treat SIGUSR1 the same way as SIGINFO. */ 187 if (sigaction(SIGUSR1, &sa, NULL)) 188 lafe_errc(1, errno, "sigaction(SIGUSR1) failed"); 189 #endif 190 #ifdef SIGPIPE 191 /* Ignore SIGPIPE signals. */ 192 sa.sa_handler = SIG_IGN; 193 sigaction(SIGPIPE, &sa, NULL); 194 #endif 195 } 196 #endif 197 198 /* Set lafe_progname before calling lafe_warnc. */ 199 lafe_setprogname(*argv, "bsdtar"); 200 201 #if HAVE_SETLOCALE 202 if (setlocale(LC_ALL, "") == NULL) 203 lafe_warnc(0, "Failed to set default locale"); 204 #endif 205 #if defined(HAVE_NL_LANGINFO) && defined(HAVE_D_MD_ORDER) 206 bsdtar->day_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 207 #endif 208 possible_help_request = 0; 209 210 /* Look up uid of current user for future reference */ 211 bsdtar->user_uid = geteuid(); 212 213 /* Default: open tape drive. */ 214 bsdtar->filename = getenv("TAPE"); 215 #if defined(_PATH_DEFTAPE) 216 if (bsdtar->filename == NULL) { 217 #if defined(_WIN32) && !defined(__CYGWIN__) 218 int tapeExists = !_access(_PATH_DEFTAPE, 0); 219 #else 220 int tapeExists = !access(_PATH_DEFTAPE, F_OK); 221 #endif 222 if (tapeExists) { 223 bsdtar->filename = _PATH_DEFTAPE; 224 } 225 } 226 #endif 227 if (bsdtar->filename == NULL) { 228 bsdtar->filename = _PATH_STDIO; 229 } 230 231 /* Default block size settings. */ 232 bsdtar->bytes_per_block = DEFAULT_BYTES_PER_BLOCK; 233 /* Allow library to default this unless user specifies -b. */ 234 bsdtar->bytes_in_last_block = -1; 235 236 /* Default: preserve mod time on extract */ 237 bsdtar->extract_flags = ARCHIVE_EXTRACT_TIME; 238 239 /* Default: Perform basic security checks. */ 240 bsdtar->extract_flags |= SECURITY; 241 242 #ifndef _WIN32 243 /* On POSIX systems, assume --same-owner and -p when run by 244 * the root user. This doesn't make any sense on Windows. */ 245 if (bsdtar->user_uid == 0) { 246 /* --same-owner */ 247 bsdtar->extract_flags |= ARCHIVE_EXTRACT_OWNER; 248 /* -p */ 249 bsdtar->extract_flags |= ARCHIVE_EXTRACT_PERM; 250 bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL; 251 bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR; 252 bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS; 253 bsdtar->extract_flags |= ARCHIVE_EXTRACT_MAC_METADATA; 254 } 255 #endif 256 257 /* 258 * Enable Mac OS "copyfile()" extension by default. 259 * This has no effect on other platforms. 260 */ 261 bsdtar->readdisk_flags |= ARCHIVE_READDISK_MAC_COPYFILE; 262 #ifdef COPYFILE_DISABLE_VAR 263 if (getenv(COPYFILE_DISABLE_VAR)) 264 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_MAC_COPYFILE; 265 #endif 266 #if defined(__APPLE__) 267 /* 268 * On Mac OS ACLs are archived with copyfile() (--mac-metadata) 269 * Translation to NFSv4 ACLs has to be requested explicitly with --acls 270 */ 271 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_ACL; 272 #endif 273 274 bsdtar->matching = archive_match_new(); 275 if (bsdtar->matching == NULL) 276 lafe_errc(1, errno, "Out of memory"); 277 bsdtar->cset = cset_new(); 278 if (bsdtar->cset == NULL) 279 lafe_errc(1, errno, "Out of memory"); 280 281 bsdtar->argv = argv; 282 bsdtar->argc = argc; 283 284 /* 285 * Comments following each option indicate where that option 286 * originated: SUSv2, POSIX, GNU tar, star, etc. If there's 287 * no such comment, then I don't know of anyone else who 288 * implements that option. 289 */ 290 while ((opt = bsdtar_getopt(bsdtar)) != -1) { 291 switch (opt) { 292 case 'a': /* GNU tar */ 293 bsdtar->flags |= OPTFLAG_AUTO_COMPRESS; 294 break; 295 case OPTION_ACLS: /* GNU tar */ 296 bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL; 297 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_NO_ACL; 298 bsdtar->flags |= OPTFLAG_ACLS; 299 break; 300 case 'B': /* GNU tar */ 301 /* libarchive doesn't need this; just ignore it. */ 302 break; 303 case 'b': /* SUSv2 */ 304 errno = 0; 305 tptr = NULL; 306 t = (int)strtol(bsdtar->argument, &tptr, 10); 307 if (errno || t <= 0 || t > 8192 || 308 *(bsdtar->argument) == '\0' || tptr == NULL || 309 *tptr != '\0') { 310 lafe_errc(1, 0, "Invalid or out of range " 311 "(1..8192) argument to -b"); 312 } 313 bsdtar->bytes_per_block = 512 * t; 314 /* Explicit -b forces last block size. */ 315 bsdtar->bytes_in_last_block = bsdtar->bytes_per_block; 316 break; 317 case OPTION_B64ENCODE: 318 if (compression2 != '\0') 319 lafe_errc(1, 0, 320 "Can't specify both --uuencode and " 321 "--b64encode"); 322 compression2 = opt; 323 compression2_name = "b64encode"; 324 break; 325 case 'C': /* GNU tar */ 326 if (strlen(bsdtar->argument) == 0) 327 lafe_errc(1, 0, 328 "Meaningless option: -C ''"); 329 330 set_chdir(bsdtar, bsdtar->argument); 331 break; 332 case 'c': /* SUSv2 */ 333 set_mode(bsdtar, opt); 334 break; 335 case OPTION_CHECK_LINKS: /* GNU tar */ 336 bsdtar->flags |= OPTFLAG_WARN_LINKS; 337 break; 338 case OPTION_CHROOT: /* NetBSD */ 339 bsdtar->flags |= OPTFLAG_CHROOT; 340 break; 341 case OPTION_CLEAR_NOCHANGE_FFLAGS: 342 bsdtar->extract_flags |= 343 ARCHIVE_EXTRACT_CLEAR_NOCHANGE_FFLAGS; 344 break; 345 case OPTION_EXCLUDE: /* GNU tar */ 346 if (archive_match_exclude_pattern( 347 bsdtar->matching, bsdtar->argument) != ARCHIVE_OK) 348 lafe_errc(1, 0, 349 "Couldn't exclude %s\n", bsdtar->argument); 350 break; 351 case OPTION_EXCLUDE_VCS: /* GNU tar */ 352 for(t=0; vcs_files[t]; t++) { 353 if (archive_match_exclude_pattern( 354 bsdtar->matching, 355 vcs_files[t]) != ARCHIVE_OK) 356 lafe_errc(1, 0, "Couldn't " 357 "exclude %s\n", vcs_files[t]); 358 } 359 break; 360 case OPTION_FFLAGS: 361 bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS; 362 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_NO_FFLAGS; 363 bsdtar->flags |= OPTFLAG_FFLAGS; 364 break; 365 case OPTION_FORMAT: /* GNU tar, others */ 366 cset_set_format(bsdtar->cset, bsdtar->argument); 367 break; 368 case 'f': /* SUSv2 */ 369 bsdtar->filename = bsdtar->argument; 370 break; 371 case OPTION_GID: /* cpio */ 372 errno = 0; 373 tptr = NULL; 374 t = (int)strtol(bsdtar->argument, &tptr, 10); 375 if (errno || t < 0 || *(bsdtar->argument) == '\0' || 376 tptr == NULL || *tptr != '\0') { 377 lafe_errc(1, 0, "Invalid argument to --gid"); 378 } 379 bsdtar->gid = t; 380 break; 381 case OPTION_GNAME: /* cpio */ 382 bsdtar->gname = bsdtar->argument; 383 break; 384 case OPTION_GROUP: /* GNU tar */ 385 errno = 0; 386 tptr = NULL; 387 388 uptr = strchr(bsdtar->argument, ':'); 389 if(uptr != NULL) { 390 if(uptr[1] == 0) { 391 lafe_errc(1, 0, "Invalid argument to --group (missing id after :)"); 392 } 393 uptr[0] = 0; 394 uptr++; 395 t = (int)strtol(uptr, &tptr, 10); 396 if (errno || t < 0 || *uptr == '\0' || 397 tptr == NULL || *tptr != '\0') { 398 lafe_errc(1, 0, "Invalid argument to --group (%s is not a number)", uptr); 399 } else { 400 bsdtar->gid = t; 401 } 402 bsdtar->gname = bsdtar->argument; 403 } else { 404 t = (int)strtol(bsdtar->argument, &tptr, 10); 405 if (errno || t < 0 || *(bsdtar->argument) == '\0' || 406 tptr == NULL || *tptr != '\0') { 407 bsdtar->gname = bsdtar->argument; 408 } else { 409 bsdtar->gid = t; 410 bsdtar->gname = ""; 411 } 412 } 413 break; 414 case OPTION_GRZIP: 415 if (compression != '\0') 416 lafe_errc(1, 0, 417 "Can't specify both -%c and -%c", opt, 418 compression); 419 compression = opt; 420 compression_name = "grzip"; 421 break; 422 case 'H': /* BSD convention */ 423 bsdtar->symlink_mode = 'H'; 424 break; 425 case 'h': /* Linux Standards Base, gtar; synonym for -L */ 426 bsdtar->symlink_mode = 'L'; 427 /* Hack: -h by itself is the "help" command. */ 428 possible_help_request = 1; 429 break; 430 case OPTION_HELP: /* GNU tar, others */ 431 long_help(); 432 /* NOTREACHED*/ 433 case OPTION_HFS_COMPRESSION: /* Mac OS X v10.6 or later */ 434 bsdtar->extract_flags |= 435 ARCHIVE_EXTRACT_HFS_COMPRESSION_FORCED; 436 break; 437 case OPTION_IGNORE_ZEROS: 438 bsdtar->flags |= OPTFLAG_IGNORE_ZEROS; 439 break; 440 case 'I': /* GNU tar */ 441 /* 442 * TODO: Allow 'names' to come from an archive, 443 * not just a text file. Design a good UI for 444 * allowing names and mode/owner to be read 445 * from an archive, with contents coming from 446 * disk. This can be used to "refresh" an 447 * archive or to design archives with special 448 * permissions without having to create those 449 * permissions on disk. 450 */ 451 bsdtar->names_from_file = bsdtar->argument; 452 break; 453 case OPTION_INCLUDE: 454 /* 455 * No one else has the @archive extension, so 456 * no one else needs this to filter entries 457 * when transforming archives. 458 */ 459 if (archive_match_include_pattern(bsdtar->matching, 460 bsdtar->argument) != ARCHIVE_OK) 461 lafe_errc(1, 0, 462 "Failed to add %s to inclusion list", 463 bsdtar->argument); 464 break; 465 case 'j': /* GNU tar */ 466 if (compression != '\0') 467 lafe_errc(1, 0, 468 "Can't specify both -%c and -%c", opt, 469 compression); 470 compression = opt; 471 compression_name = "bzip2"; 472 break; 473 case 'J': /* GNU tar 1.21 and later */ 474 if (compression != '\0') 475 lafe_errc(1, 0, 476 "Can't specify both -%c and -%c", opt, 477 compression); 478 compression = opt; 479 compression_name = "xz"; 480 break; 481 case 'k': /* GNU tar */ 482 bsdtar->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE; 483 break; 484 case OPTION_KEEP_NEWER_FILES: /* GNU tar */ 485 bsdtar->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER; 486 break; 487 case 'L': /* BSD convention */ 488 bsdtar->symlink_mode = 'L'; 489 break; 490 case 'l': /* SUSv2 and GNU tar beginning with 1.16 */ 491 /* GNU tar 1.13 used -l for --one-file-system */ 492 bsdtar->flags |= OPTFLAG_WARN_LINKS; 493 break; 494 case OPTION_LRZIP: 495 case OPTION_LZ4: 496 case OPTION_LZIP: /* GNU tar beginning with 1.23 */ 497 case OPTION_LZMA: /* GNU tar beginning with 1.20 */ 498 case OPTION_LZOP: /* GNU tar beginning with 1.21 */ 499 case OPTION_ZSTD: 500 if (compression != '\0') 501 lafe_errc(1, 0, 502 "Can't specify both -%c and -%c", opt, 503 compression); 504 compression = opt; 505 switch (opt) { 506 case OPTION_LRZIP: compression_name = "lrzip"; break; 507 case OPTION_LZ4: compression_name = "lz4"; break; 508 case OPTION_LZIP: compression_name = "lzip"; break; 509 case OPTION_LZMA: compression_name = "lzma"; break; 510 case OPTION_LZOP: compression_name = "lzop"; break; 511 case OPTION_ZSTD: compression_name = "zstd"; break; 512 } 513 break; 514 case 'm': /* SUSv2 */ 515 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_TIME; 516 break; 517 case OPTION_MAC_METADATA: /* Mac OS X */ 518 bsdtar->readdisk_flags |= ARCHIVE_READDISK_MAC_COPYFILE; 519 bsdtar->extract_flags |= ARCHIVE_EXTRACT_MAC_METADATA; 520 bsdtar->flags |= OPTFLAG_MAC_METADATA; 521 break; 522 case 'n': /* GNU tar */ 523 bsdtar->flags |= OPTFLAG_NO_SUBDIRS; 524 break; 525 /* 526 * Selecting files by time: 527 * --newer-?time='date' Only files newer than 'date' 528 * --newer-?time-than='file' Only files newer than time 529 * on specified file (useful for incremental backups) 530 */ 531 case OPTION_NEWER_CTIME: /* GNU tar */ 532 if (archive_match_include_date(bsdtar->matching, 533 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_NEWER, 534 bsdtar->argument) != ARCHIVE_OK) 535 lafe_errc(1, 0, "Error : %s", 536 archive_error_string(bsdtar->matching)); 537 break; 538 case OPTION_NEWER_CTIME_THAN: 539 if (archive_match_include_file_time(bsdtar->matching, 540 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_NEWER, 541 bsdtar->argument) != ARCHIVE_OK) 542 lafe_errc(1, 0, "Error : %s", 543 archive_error_string(bsdtar->matching)); 544 break; 545 case OPTION_NEWER_MTIME: /* GNU tar */ 546 if (archive_match_include_date(bsdtar->matching, 547 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_NEWER, 548 bsdtar->argument) != ARCHIVE_OK) 549 lafe_errc(1, 0, "Error : %s", 550 archive_error_string(bsdtar->matching)); 551 break; 552 case OPTION_NEWER_MTIME_THAN: 553 if (archive_match_include_file_time(bsdtar->matching, 554 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_NEWER, 555 bsdtar->argument) != ARCHIVE_OK) 556 lafe_errc(1, 0, "Error : %s", 557 archive_error_string(bsdtar->matching)); 558 break; 559 case OPTION_NODUMP: /* star */ 560 bsdtar->readdisk_flags |= ARCHIVE_READDISK_HONOR_NODUMP; 561 break; 562 case OPTION_NOPRESERVE_HFS_COMPRESSION: 563 /* Mac OS X v10.6 or later */ 564 bsdtar->extract_flags |= 565 ARCHIVE_EXTRACT_NO_HFS_COMPRESSION; 566 break; 567 case OPTION_NO_ACLS: /* GNU tar */ 568 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_ACL; 569 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_ACL; 570 bsdtar->flags |= OPTFLAG_NO_ACLS; 571 break; 572 case OPTION_NO_FFLAGS: 573 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_FFLAGS; 574 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_FFLAGS; 575 bsdtar->flags |= OPTFLAG_NO_FFLAGS; 576 break; 577 case OPTION_NO_MAC_METADATA: /* Mac OS X */ 578 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_MAC_COPYFILE; 579 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_MAC_METADATA; 580 bsdtar->flags |= OPTFLAG_NO_MAC_METADATA; 581 break; 582 case OPTION_NO_READ_SPARSE: 583 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_SPARSE; 584 bsdtar->flags |= OPTFLAG_NO_READ_SPARSE; 585 break; 586 case OPTION_NO_SAFE_WRITES: 587 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_SAFE_WRITES; 588 break; 589 case OPTION_NO_SAME_OWNER: /* GNU tar */ 590 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_OWNER; 591 break; 592 case OPTION_NO_SAME_PERMISSIONS: /* GNU tar */ 593 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_PERM; 594 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_ACL; 595 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_XATTR; 596 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_FFLAGS; 597 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_MAC_METADATA; 598 break; 599 case OPTION_NO_XATTRS: /* GNU tar */ 600 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_XATTR; 601 bsdtar->readdisk_flags |= ARCHIVE_READDISK_NO_XATTR; 602 bsdtar->flags |= OPTFLAG_NO_XATTRS; 603 break; 604 case OPTION_NULL: /* GNU tar */ 605 bsdtar->flags |= OPTFLAG_NULL; 606 break; 607 case OPTION_NUMERIC_OWNER: /* GNU tar */ 608 bsdtar->uname = ""; 609 bsdtar->gname = ""; 610 bsdtar->flags |= OPTFLAG_NUMERIC_OWNER; 611 break; 612 case 'O': /* GNU tar */ 613 bsdtar->flags |= OPTFLAG_STDOUT; 614 break; 615 case 'o': /* SUSv2 and GNU conflict here, but not fatally */ 616 bsdtar->flags |= OPTFLAG_O; 617 break; 618 /* 619 * Selecting files by time: 620 * --older-?time='date' Only files older than 'date' 621 * --older-?time-than='file' Only files older than time 622 * on specified file 623 */ 624 case OPTION_OLDER_CTIME: 625 if (archive_match_include_date(bsdtar->matching, 626 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_OLDER, 627 bsdtar->argument) != ARCHIVE_OK) 628 lafe_errc(1, 0, "Error : %s", 629 archive_error_string(bsdtar->matching)); 630 break; 631 case OPTION_OLDER_CTIME_THAN: 632 if (archive_match_include_file_time(bsdtar->matching, 633 ARCHIVE_MATCH_CTIME | ARCHIVE_MATCH_OLDER, 634 bsdtar->argument) != ARCHIVE_OK) 635 lafe_errc(1, 0, "Error : %s", 636 archive_error_string(bsdtar->matching)); 637 break; 638 case OPTION_OLDER_MTIME: 639 if (archive_match_include_date(bsdtar->matching, 640 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_OLDER, 641 bsdtar->argument) != ARCHIVE_OK) 642 lafe_errc(1, 0, "Error : %s", 643 archive_error_string(bsdtar->matching)); 644 break; 645 case OPTION_OLDER_MTIME_THAN: 646 if (archive_match_include_file_time(bsdtar->matching, 647 ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_OLDER, 648 bsdtar->argument) != ARCHIVE_OK) 649 lafe_errc(1, 0, "Error : %s", 650 archive_error_string(bsdtar->matching)); 651 break; 652 case OPTION_ONE_FILE_SYSTEM: /* GNU tar */ 653 bsdtar->readdisk_flags |= 654 ARCHIVE_READDISK_NO_TRAVERSE_MOUNTS; 655 break; 656 case OPTION_OPTIONS: 657 if (bsdtar->option_options != NULL) { 658 lafe_warnc(0, 659 "Ignoring previous option '%s', separate multiple options with commas", 660 bsdtar->option_options); 661 } 662 bsdtar->option_options = bsdtar->argument; 663 break; 664 case OPTION_OWNER: /* GNU tar */ 665 errno = 0; 666 tptr = NULL; 667 668 uptr = strchr(bsdtar->argument, ':'); 669 if(uptr != NULL) { 670 if(uptr[1] == 0) { 671 lafe_errc(1, 0, "Invalid argument to --owner (missing id after :)"); 672 } 673 uptr[0] = 0; 674 uptr++; 675 t = (int)strtol(uptr, &tptr, 10); 676 if (errno || t < 0 || *uptr == '\0' || 677 tptr == NULL || *tptr != '\0') { 678 lafe_errc(1, 0, "Invalid argument to --owner (%s is not a number)", uptr); 679 } else { 680 bsdtar->uid = t; 681 } 682 bsdtar->uname = bsdtar->argument; 683 } else { 684 t = (int)strtol(bsdtar->argument, &tptr, 10); 685 if (errno || t < 0 || *(bsdtar->argument) == '\0' || 686 tptr == NULL || *tptr != '\0') { 687 bsdtar->uname = bsdtar->argument; 688 } else { 689 bsdtar->uid = t; 690 bsdtar->uname = ""; 691 } 692 } 693 break; 694 #if 0 695 /* 696 * The common BSD -P option is not necessary, since 697 * our default is to archive symlinks, not follow 698 * them. This is convenient, as -P conflicts with GNU 699 * tar anyway. 700 */ 701 case 'P': /* BSD convention */ 702 /* Default behavior, no option necessary. */ 703 break; 704 #endif 705 case 'P': /* GNU tar */ 706 bsdtar->extract_flags &= ~SECURITY; 707 bsdtar->flags |= OPTFLAG_ABSOLUTE_PATHS; 708 break; 709 case 'p': /* GNU tar, star */ 710 bsdtar->extract_flags |= ARCHIVE_EXTRACT_PERM; 711 bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL; 712 bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR; 713 bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS; 714 bsdtar->extract_flags |= ARCHIVE_EXTRACT_MAC_METADATA; 715 break; 716 case OPTION_PASSPHRASE: 717 bsdtar->passphrase = bsdtar->argument; 718 break; 719 case OPTION_POSIX: /* GNU tar */ 720 cset_set_format(bsdtar->cset, "pax"); 721 break; 722 case 'q': /* FreeBSD GNU tar --fast-read, NetBSD -q */ 723 bsdtar->flags |= OPTFLAG_FAST_READ; 724 break; 725 case 'r': /* SUSv2 */ 726 set_mode(bsdtar, opt); 727 break; 728 case OPTION_READ_SPARSE: 729 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_NO_SPARSE; 730 bsdtar->flags |= OPTFLAG_READ_SPARSE; 731 break; 732 case 'S': /* NetBSD pax-as-tar */ 733 bsdtar->extract_flags |= ARCHIVE_EXTRACT_SPARSE; 734 break; 735 case 's': /* NetBSD pax-as-tar */ 736 #if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H) || defined(HAVE_PCRE2POSIX_H) 737 add_substitution(bsdtar, bsdtar->argument); 738 #else 739 lafe_warnc(0, 740 "-s is not supported by this version of bsdtar"); 741 usage(); 742 #endif 743 break; 744 case OPTION_SAFE_WRITES: 745 bsdtar->extract_flags |= ARCHIVE_EXTRACT_SAFE_WRITES; 746 break; 747 case OPTION_SAME_OWNER: /* GNU tar */ 748 bsdtar->extract_flags |= ARCHIVE_EXTRACT_OWNER; 749 break; 750 case OPTION_STRIP_COMPONENTS: /* GNU tar 1.15 */ 751 errno = 0; 752 tptr = NULL; 753 t = (int)strtol(bsdtar->argument, &tptr, 10); 754 if (errno || t < 0 || *(bsdtar->argument) == '\0' || 755 tptr == NULL || *tptr != '\0') { 756 lafe_errc(1, 0, "Invalid argument to " 757 "--strip-components"); 758 } 759 bsdtar->strip_components = t; 760 break; 761 case 'T': /* GNU tar */ 762 bsdtar->names_from_file = bsdtar->argument; 763 break; 764 case 't': /* SUSv2 */ 765 set_mode(bsdtar, opt); 766 bsdtar->verbose++; 767 break; 768 case OPTION_TOTALS: /* GNU tar */ 769 bsdtar->flags |= OPTFLAG_TOTALS; 770 break; 771 case 'U': /* GNU tar */ 772 bsdtar->extract_flags |= ARCHIVE_EXTRACT_UNLINK; 773 bsdtar->flags |= OPTFLAG_UNLINK_FIRST; 774 break; 775 case 'u': /* SUSv2 */ 776 set_mode(bsdtar, opt); 777 break; 778 case OPTION_UID: /* cpio */ 779 errno = 0; 780 tptr = NULL; 781 t = (int)strtol(bsdtar->argument, &tptr, 10); 782 if (errno || t < 0 || *(bsdtar->argument) == '\0' || 783 tptr == NULL || *tptr != '\0') { 784 lafe_errc(1, 0, "Invalid argument to --uid"); 785 } 786 bsdtar->uid = t; 787 break; 788 case OPTION_UNAME: /* cpio */ 789 bsdtar->uname = bsdtar->argument; 790 break; 791 case OPTION_UUENCODE: 792 if (compression2 != '\0') 793 lafe_errc(1, 0, 794 "Can't specify both --uuencode and " 795 "--b64encode"); 796 compression2 = opt; 797 compression2_name = "uuencode"; 798 break; 799 case 'v': /* SUSv2 */ 800 bsdtar->verbose++; 801 break; 802 case OPTION_VERSION: /* GNU convention */ 803 version(); 804 /* NOTREACHED */ 805 #if 0 806 /* 807 * The -W longopt feature is handled inside of 808 * bsdtar_getopt(), so -W is not available here. 809 */ 810 case 'W': /* Obscure GNU convention. */ 811 break; 812 #endif 813 case 'w': /* SUSv2 */ 814 bsdtar->flags |= OPTFLAG_INTERACTIVE; 815 break; 816 case 'X': /* GNU tar */ 817 if (archive_match_exclude_pattern_from_file( 818 bsdtar->matching, bsdtar->argument, 0) 819 != ARCHIVE_OK) 820 lafe_errc(1, 0, "Error : %s", 821 archive_error_string(bsdtar->matching)); 822 break; 823 case 'x': /* SUSv2 */ 824 set_mode(bsdtar, opt); 825 break; 826 case OPTION_XATTRS: /* GNU tar */ 827 bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR; 828 bsdtar->readdisk_flags &= ~ARCHIVE_READDISK_NO_XATTR; 829 bsdtar->flags |= OPTFLAG_XATTRS; 830 break; 831 case 'y': /* FreeBSD version of GNU tar */ 832 if (compression != '\0') 833 lafe_errc(1, 0, 834 "Can't specify both -%c and -%c", opt, 835 compression); 836 compression = opt; 837 compression_name = "bzip2"; 838 break; 839 case 'Z': /* GNU tar */ 840 if (compression != '\0') 841 lafe_errc(1, 0, 842 "Can't specify both -%c and -%c", opt, 843 compression); 844 compression = opt; 845 compression_name = "compress"; 846 break; 847 case 'z': /* GNU tar, star, many others */ 848 if (compression != '\0') 849 lafe_errc(1, 0, 850 "Can't specify both -%c and -%c", opt, 851 compression); 852 compression = opt; 853 compression_name = "gzip"; 854 break; 855 case OPTION_USE_COMPRESS_PROGRAM: 856 compress_program = bsdtar->argument; 857 break; 858 default: 859 usage(); 860 } 861 } 862 863 /* 864 * Sanity-check options. 865 */ 866 867 /* If no "real" mode was specified, treat -h as --help. */ 868 if ((bsdtar->mode == '\0') && possible_help_request) { 869 long_help(); 870 } 871 872 /* Otherwise, a mode is required. */ 873 if (bsdtar->mode == '\0') 874 lafe_errc(1, 0, 875 "Must specify one of -c, -r, -t, -u, -x"); 876 877 /* Check boolean options only permitted in certain modes. */ 878 if (bsdtar->flags & OPTFLAG_AUTO_COMPRESS) { 879 only_mode(bsdtar, "-a", "cx"); 880 if (bsdtar->mode == 'x') { 881 bsdtar->flags &= ~OPTFLAG_AUTO_COMPRESS; 882 lafe_warnc(0, 883 "Ignoring option -a in mode -x"); 884 } 885 } 886 if (bsdtar->readdisk_flags & ARCHIVE_READDISK_NO_TRAVERSE_MOUNTS) 887 only_mode(bsdtar, "--one-file-system", "cru"); 888 if (bsdtar->flags & OPTFLAG_FAST_READ) 889 only_mode(bsdtar, "--fast-read", "xt"); 890 if (bsdtar->extract_flags & ARCHIVE_EXTRACT_HFS_COMPRESSION_FORCED) 891 only_mode(bsdtar, "--hfsCompression", "x"); 892 if (bsdtar->extract_flags & ARCHIVE_EXTRACT_NO_HFS_COMPRESSION) 893 only_mode(bsdtar, "--nopreserveHFSCompression", "x"); 894 if (bsdtar->readdisk_flags & ARCHIVE_READDISK_HONOR_NODUMP) 895 only_mode(bsdtar, "--nodump", "cru"); 896 if (bsdtar->flags & OPTFLAG_ACLS) 897 only_mode(bsdtar, "--acls", "crux"); 898 if (bsdtar->flags & OPTFLAG_NO_ACLS) 899 only_mode(bsdtar, "--no-acls", "crux"); 900 if (bsdtar->flags & OPTFLAG_XATTRS) 901 only_mode(bsdtar, "--xattrs", "crux"); 902 if (bsdtar->flags & OPTFLAG_NO_XATTRS) 903 only_mode(bsdtar, "--no-xattrs", "crux"); 904 if (bsdtar->flags & OPTFLAG_FFLAGS) 905 only_mode(bsdtar, "--fflags", "crux"); 906 if (bsdtar->flags & OPTFLAG_NO_FFLAGS) 907 only_mode(bsdtar, "--no-fflags", "crux"); 908 if (bsdtar->flags & OPTFLAG_MAC_METADATA) 909 only_mode(bsdtar, "--mac-metadata", "crux"); 910 if (bsdtar->flags & OPTFLAG_NO_MAC_METADATA) 911 only_mode(bsdtar, "--no-mac-metadata", "crux"); 912 if (bsdtar->flags & OPTFLAG_O) { 913 switch (bsdtar->mode) { 914 case 'c': 915 /* 916 * In GNU tar, -o means "old format." The 917 * "ustar" format is the closest thing 918 * supported by libarchive. 919 */ 920 cset_set_format(bsdtar->cset, "ustar"); 921 /* TODO: bsdtar->create_format = "v7"; */ 922 break; 923 case 'x': 924 /* POSIX-compatible behavior. */ 925 bsdtar->flags |= OPTFLAG_NO_OWNER; 926 bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_OWNER; 927 break; 928 default: 929 only_mode(bsdtar, "-o", "xc"); 930 break; 931 } 932 } 933 if (bsdtar->flags & OPTFLAG_STDOUT) 934 only_mode(bsdtar, "-O", "xt"); 935 if (bsdtar->flags & OPTFLAG_UNLINK_FIRST) 936 only_mode(bsdtar, "-U", "x"); 937 if (bsdtar->flags & OPTFLAG_WARN_LINKS) 938 only_mode(bsdtar, "--check-links", "cr"); 939 940 if ((bsdtar->flags & OPTFLAG_AUTO_COMPRESS) && 941 cset_auto_compress(bsdtar->cset, bsdtar->filename)) { 942 /* Ignore specified compressions if auto-compress works. */ 943 compression = '\0'; 944 compression2 = '\0'; 945 } 946 /* Check other parameters only permitted in certain modes. */ 947 if (compress_program != NULL) { 948 only_mode(bsdtar, "--use-compress-program", "cxt"); 949 cset_add_filter_program(bsdtar->cset, compress_program); 950 /* Ignore specified compressions. */ 951 compression = '\0'; 952 compression2 = '\0'; 953 } 954 if (compression != '\0') { 955 switch (compression) { 956 case 'J': case 'j': case 'y': case 'Z': case 'z': 957 strcpy(buff, "-?"); 958 buff[1] = compression; 959 break; 960 default: 961 strcpy(buff, "--"); 962 strcat(buff, compression_name); 963 break; 964 } 965 only_mode(bsdtar, buff, "cxt"); 966 cset_add_filter(bsdtar->cset, compression_name); 967 } 968 if (compression2 != '\0') { 969 strcpy(buff, "--"); 970 strcat(buff, compression2_name); 971 only_mode(bsdtar, buff, "cxt"); 972 cset_add_filter(bsdtar->cset, compression2_name); 973 } 974 if (cset_get_format(bsdtar->cset) != NULL) 975 only_mode(bsdtar, "--format", "cru"); 976 if (bsdtar->symlink_mode != '\0') { 977 strcpy(buff, "-?"); 978 buff[1] = bsdtar->symlink_mode; 979 only_mode(bsdtar, buff, "cru"); 980 } 981 982 /* 983 * When creating an archive from a directory tree, the directory 984 * walking code will already avoid entering directories when 985 * recursive inclusion of directory content is disabled, therefore 986 * changing the matching behavior has no effect for creation modes. 987 * It is relevant for extraction or listing. 988 */ 989 archive_match_set_inclusion_recursion(bsdtar->matching, 990 !(bsdtar->flags & OPTFLAG_NO_SUBDIRS)); 991 992 /* Filename "-" implies stdio. */ 993 if (strcmp(bsdtar->filename, "-") == 0) 994 bsdtar->filename = NULL; 995 996 switch(bsdtar->mode) { 997 case 'c': 998 tar_mode_c(bsdtar); 999 break; 1000 case 'r': 1001 tar_mode_r(bsdtar); 1002 break; 1003 case 't': 1004 tar_mode_t(bsdtar); 1005 break; 1006 case 'u': 1007 tar_mode_u(bsdtar); 1008 break; 1009 case 'x': 1010 tar_mode_x(bsdtar); 1011 break; 1012 } 1013 1014 archive_match_free(bsdtar->matching); 1015 #if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H) || defined(HAVE_PCRE2POSIX_H) 1016 cleanup_substitution(bsdtar); 1017 #endif 1018 cset_free(bsdtar->cset); 1019 passphrase_free(bsdtar->ppbuff); 1020 1021 if (bsdtar->return_value != 0) 1022 lafe_warnc(0, 1023 "Error exit delayed from previous errors."); 1024 return (bsdtar->return_value); 1025 } 1026 1027 static void 1028 set_mode(struct bsdtar *bsdtar, char opt) 1029 { 1030 if (bsdtar->mode != '\0' && bsdtar->mode != opt) 1031 lafe_errc(1, 0, 1032 "Can't specify both -%c and -%c", opt, bsdtar->mode); 1033 bsdtar->mode = opt; 1034 } 1035 1036 /* 1037 * Verify that the mode is correct. 1038 */ 1039 static void 1040 only_mode(struct bsdtar *bsdtar, const char *opt, const char *valid_modes) 1041 { 1042 if (strchr(valid_modes, bsdtar->mode) == NULL) 1043 lafe_errc(1, 0, 1044 "Option %s is not permitted in mode -%c", 1045 opt, bsdtar->mode); 1046 } 1047 1048 1049 void 1050 usage(void) 1051 { 1052 const char *p; 1053 1054 p = lafe_getprogname(); 1055 1056 fprintf(stderr, "Usage:\n"); 1057 fprintf(stderr, " List: %s -tf <archive-filename>\n", p); 1058 fprintf(stderr, " Extract: %s -xf <archive-filename>\n", p); 1059 fprintf(stderr, " Create: %s -cf <archive-filename> [filenames...]\n", p); 1060 fprintf(stderr, " Help: %s --help\n", p); 1061 exit(1); 1062 } 1063 1064 static void 1065 version(void) 1066 { 1067 printf("bsdtar %s - %s \n", 1068 BSDTAR_VERSION_STRING, 1069 archive_version_details()); 1070 exit(0); 1071 } 1072 1073 static const char *long_help_msg = 1074 "First option must be a mode specifier:\n" 1075 " -c Create -r Add/Replace -t List -u Update -x Extract\n" 1076 "Common Options:\n" 1077 " -b # Use # 512-byte records per I/O block\n" 1078 " -f <filename> Location of archive (default " _PATH_DEFTAPE ")\n" 1079 " -v Verbose\n" 1080 " -w Interactive\n" 1081 "Create: %p -c [options] [<file> | <dir> | @<archive> | -C <dir> ]\n" 1082 " <file>, <dir> add these items to archive\n" 1083 " -z, -j, -J, --lzma Compress archive with gzip/bzip2/xz/lzma\n" 1084 " --format {ustar|pax|cpio|shar} Select archive format\n" 1085 " --exclude <pattern> Skip files that match pattern\n" 1086 " -C <dir> Change to <dir> before processing remaining files\n" 1087 " @<archive> Add entries from <archive> to output\n" 1088 "List: %p -t [options] [<patterns>]\n" 1089 " <patterns> If specified, list only entries that match\n" 1090 "Extract: %p -x [options] [<patterns>]\n" 1091 " <patterns> If specified, extract only entries that match\n" 1092 " -k Keep (don't overwrite) existing files\n" 1093 " -m Don't restore modification times\n" 1094 " -O Write entries to stdout, don't restore to disk\n" 1095 " -p Restore permissions (including ACLs, owner, file flags)\n"; 1096 1097 1098 /* 1099 * Note that the word 'bsdtar' will always appear in the first line 1100 * of output. 1101 * 1102 * In particular, /bin/sh scripts that need to test for the presence 1103 * of bsdtar can use the following template: 1104 * 1105 * if (tar --help 2>&1 | grep bsdtar >/dev/null 2>&1 ) then \ 1106 * echo bsdtar; else echo not bsdtar; fi 1107 */ 1108 static void 1109 long_help(void) 1110 { 1111 const char *prog; 1112 const char *p; 1113 1114 prog = lafe_getprogname(); 1115 1116 fflush(stderr); 1117 1118 p = (strcmp(prog,"bsdtar") != 0) ? "(bsdtar)" : ""; 1119 printf("%s%s: manipulate archive files\n", prog, p); 1120 1121 for (p = long_help_msg; *p != '\0'; p++) { 1122 if (*p == '%') { 1123 if (p[1] == 'p') { 1124 fputs(prog, stdout); 1125 p++; 1126 } else 1127 putchar('%'); 1128 } else 1129 putchar(*p); 1130 } 1131 version(); 1132 } 1133