1 /*- 2 * Copyright (c) 2003-2007 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_STAT_H 30 #include <sys/stat.h> 31 #endif 32 #ifdef HAVE_SYS_TYPES_H 33 #include <sys/types.h> /* Linux doesn't define mode_t, etc. in sys/stat.h. */ 34 #endif 35 #include <ctype.h> 36 #ifdef HAVE_ERRNO_H 37 #include <errno.h> 38 #endif 39 #ifdef HAVE_IO_H 40 #include <io.h> 41 #endif 42 #ifdef HAVE_STDARG_H 43 #include <stdarg.h> 44 #endif 45 #ifdef HAVE_STDINT_H 46 #include <stdint.h> 47 #endif 48 #include <stdio.h> 49 #ifdef HAVE_STDLIB_H 50 #include <stdlib.h> 51 #endif 52 #ifdef HAVE_STRING_H 53 #include <string.h> 54 #endif 55 #ifdef HAVE_WCTYPE_H 56 #include <wctype.h> 57 #else 58 /* If we don't have wctype, we need to hack up some version of iswprint(). */ 59 #define iswprint isprint 60 #endif 61 62 #include "bsdtar.h" 63 #include "err.h" 64 #include "passphrase.h" 65 66 static size_t bsdtar_expand_char(char *, size_t, char); 67 static const char *strip_components(const char *path, int elements); 68 69 #if defined(_WIN32) && !defined(__CYGWIN__) 70 #define read _read 71 #endif 72 73 /* TODO: Hack up a version of mbtowc for platforms with no wide 74 * character support at all. I think the following might suffice, 75 * but it needs careful testing. 76 * #if !HAVE_MBTOWC 77 * #define mbtowc(wcp, p, n) ((*wcp = *p), 1) 78 * #endif 79 */ 80 81 /* 82 * Print a string, taking care with any non-printable characters. 83 * 84 * Note that we use a stack-allocated buffer to receive the formatted 85 * string if we can. This is partly performance (avoiding a call to 86 * malloc()), partly out of expedience (we have to call vsnprintf() 87 * before malloc() anyway to find out how big a buffer we need; we may 88 * as well point that first call at a small local buffer in case it 89 * works), but mostly for safety (so we can use this to print messages 90 * about out-of-memory conditions). 91 */ 92 93 void 94 safe_fprintf(FILE *f, const char *fmt, ...) 95 { 96 char fmtbuff_stack[256]; /* Place to format the printf() string. */ 97 char outbuff[256]; /* Buffer for outgoing characters. */ 98 char *fmtbuff_heap; /* If fmtbuff_stack is too small, we use malloc */ 99 char *fmtbuff; /* Pointer to fmtbuff_stack or fmtbuff_heap. */ 100 int fmtbuff_length; 101 int length, n; 102 va_list ap; 103 const char *p; 104 unsigned i; 105 wchar_t wc; 106 char try_wc; 107 108 /* Use a stack-allocated buffer if we can, for speed and safety. */ 109 fmtbuff_heap = NULL; 110 fmtbuff_length = sizeof(fmtbuff_stack); 111 fmtbuff = fmtbuff_stack; 112 113 /* Try formatting into the stack buffer. */ 114 va_start(ap, fmt); 115 length = vsnprintf(fmtbuff, fmtbuff_length, fmt, ap); 116 va_end(ap); 117 118 /* If the result was too large, allocate a buffer on the heap. */ 119 while (length < 0 || length >= fmtbuff_length) { 120 if (length >= fmtbuff_length) 121 fmtbuff_length = length+1; 122 else if (fmtbuff_length < 8192) 123 fmtbuff_length *= 2; 124 else if (fmtbuff_length < 1000000) 125 fmtbuff_length += fmtbuff_length / 4; 126 else { 127 length = fmtbuff_length; 128 fmtbuff_heap[length-1] = '\0'; 129 break; 130 } 131 free(fmtbuff_heap); 132 fmtbuff_heap = malloc(fmtbuff_length); 133 134 /* Reformat the result into the heap buffer if we can. */ 135 if (fmtbuff_heap != NULL) { 136 fmtbuff = fmtbuff_heap; 137 va_start(ap, fmt); 138 length = vsnprintf(fmtbuff, fmtbuff_length, fmt, ap); 139 va_end(ap); 140 } else { 141 /* Leave fmtbuff pointing to the truncated 142 * string in fmtbuff_stack. */ 143 fmtbuff = fmtbuff_stack; 144 length = sizeof(fmtbuff_stack) - 1; 145 break; 146 } 147 } 148 149 /* Note: mbrtowc() has a cleaner API, but mbtowc() seems a bit 150 * more portable, so we use that here instead. */ 151 if (mbtowc(NULL, NULL, 1) == -1) { /* Reset the shift state. */ 152 /* mbtowc() should never fail in practice, but 153 * handle the theoretical error anyway. */ 154 free(fmtbuff_heap); 155 return; 156 } 157 158 /* Write data, expanding unprintable characters. */ 159 p = fmtbuff; 160 i = 0; 161 try_wc = 1; 162 while (*p != '\0') { 163 164 /* Convert to wide char, test if the wide 165 * char is printable in the current locale. */ 166 if (try_wc && (n = mbtowc(&wc, p, length)) != -1) { 167 length -= n; 168 if (iswprint(wc) && wc != L'\\') { 169 /* Printable, copy the bytes through. */ 170 while (n-- > 0) 171 outbuff[i++] = *p++; 172 } else { 173 /* Not printable, format the bytes. */ 174 while (n-- > 0) 175 i += (unsigned)bsdtar_expand_char( 176 outbuff, i, *p++); 177 } 178 } else { 179 /* After any conversion failure, don't bother 180 * trying to convert the rest. */ 181 i += (unsigned)bsdtar_expand_char(outbuff, i, *p++); 182 try_wc = 0; 183 } 184 185 /* If our output buffer is full, dump it and keep going. */ 186 if (i > (sizeof(outbuff) - 128)) { 187 outbuff[i] = '\0'; 188 fprintf(f, "%s", outbuff); 189 i = 0; 190 } 191 } 192 outbuff[i] = '\0'; 193 fprintf(f, "%s", outbuff); 194 195 /* If we allocated a heap-based formatting buffer, free it now. */ 196 free(fmtbuff_heap); 197 } 198 199 /* 200 * Render an arbitrary sequence of bytes into printable ASCII characters. 201 */ 202 static size_t 203 bsdtar_expand_char(char *buff, size_t offset, char c) 204 { 205 size_t i = offset; 206 207 if (isprint((unsigned char)c) && c != '\\') 208 buff[i++] = c; 209 else { 210 buff[i++] = '\\'; 211 switch (c) { 212 case '\a': buff[i++] = 'a'; break; 213 case '\b': buff[i++] = 'b'; break; 214 case '\f': buff[i++] = 'f'; break; 215 case '\n': buff[i++] = 'n'; break; 216 #if '\r' != '\n' 217 /* On some platforms, \n and \r are the same. */ 218 case '\r': buff[i++] = 'r'; break; 219 #endif 220 case '\t': buff[i++] = 't'; break; 221 case '\v': buff[i++] = 'v'; break; 222 case '\\': buff[i++] = '\\'; break; 223 default: 224 sprintf(buff + i, "%03o", 0xFF & (int)c); 225 i += 3; 226 } 227 } 228 229 return (i - offset); 230 } 231 232 int 233 yes(const char *fmt, ...) 234 { 235 char buff[32]; 236 char *p; 237 ssize_t l; 238 239 va_list ap; 240 va_start(ap, fmt); 241 vfprintf(stderr, fmt, ap); 242 va_end(ap); 243 fprintf(stderr, " (y/N)? "); 244 fflush(stderr); 245 246 l = read(2, buff, sizeof(buff) - 1); 247 if (l < 0) { 248 fprintf(stderr, "Keyboard read failed\n"); 249 exit(1); 250 } 251 if (l == 0) 252 return (0); 253 buff[l] = 0; 254 255 for (p = buff; *p != '\0'; p++) { 256 if (isspace((unsigned char)*p)) 257 continue; 258 switch(*p) { 259 case 'y': case 'Y': 260 return (1); 261 case 'n': case 'N': 262 return (0); 263 default: 264 return (0); 265 } 266 } 267 268 return (0); 269 } 270 271 /*- 272 * The logic here for -C <dir> attempts to avoid 273 * chdir() as long as possible. For example: 274 * "-C /foo -C /bar file" needs chdir("/bar") but not chdir("/foo") 275 * "-C /foo -C bar file" needs chdir("/foo/bar") 276 * "-C /foo -C bar /file1" does not need chdir() 277 * "-C /foo -C bar /file1 file2" needs chdir("/foo/bar") before file2 278 * 279 * The only correct way to handle this is to record a "pending" chdir 280 * request and combine multiple requests intelligently until we 281 * need to process a non-absolute file. set_chdir() adds the new dir 282 * to the pending list; do_chdir() actually executes any pending chdir. 283 * 284 * This way, programs that build tar command lines don't have to worry 285 * about -C with non-existent directories; such requests will only 286 * fail if the directory must be accessed. 287 * 288 */ 289 void 290 set_chdir(struct bsdtar *bsdtar, const char *newdir) 291 { 292 #if defined(_WIN32) && !defined(__CYGWIN__) 293 if (newdir[0] == '/' || newdir[0] == '\\' || 294 /* Detect this type, for example, "C:\" or "C:/" */ 295 (((newdir[0] >= 'a' && newdir[0] <= 'z') || 296 (newdir[0] >= 'A' && newdir[0] <= 'Z')) && 297 newdir[1] == ':' && (newdir[2] == '/' || newdir[2] == '\\'))) { 298 #else 299 if (newdir[0] == '/') { 300 #endif 301 /* The -C /foo -C /bar case; dump first one. */ 302 free(bsdtar->pending_chdir); 303 bsdtar->pending_chdir = NULL; 304 } 305 if (bsdtar->pending_chdir == NULL) 306 /* Easy case: no previously-saved dir. */ 307 bsdtar->pending_chdir = strdup(newdir); 308 else { 309 /* The -C /foo -C bar case; concatenate */ 310 char *old_pending = bsdtar->pending_chdir; 311 size_t old_len = strlen(old_pending); 312 bsdtar->pending_chdir = malloc(old_len + strlen(newdir) + 2); 313 if (old_pending[old_len - 1] == '/') 314 old_pending[old_len - 1] = '\0'; 315 if (bsdtar->pending_chdir != NULL) 316 sprintf(bsdtar->pending_chdir, "%s/%s", 317 old_pending, newdir); 318 free(old_pending); 319 } 320 if (bsdtar->pending_chdir == NULL) 321 lafe_errc(1, errno, "No memory"); 322 } 323 324 void 325 do_chdir(struct bsdtar *bsdtar) 326 { 327 if (bsdtar->pending_chdir == NULL) 328 return; 329 330 if (chdir(bsdtar->pending_chdir) != 0) { 331 lafe_errc(1, 0, "could not chdir to '%s'\n", 332 bsdtar->pending_chdir); 333 } 334 free(bsdtar->pending_chdir); 335 bsdtar->pending_chdir = NULL; 336 } 337 338 static const char * 339 strip_components(const char *p, int elements) 340 { 341 /* Skip as many elements as necessary. */ 342 while (elements > 0) { 343 switch (*p++) { 344 case '/': 345 #if defined(_WIN32) && !defined(__CYGWIN__) 346 case '\\': /* Support \ path sep on Windows ONLY. */ 347 #endif 348 elements--; 349 break; 350 case '\0': 351 /* Path is too short, skip it. */ 352 return (NULL); 353 } 354 } 355 356 /* Skip any / characters. This handles short paths that have 357 * additional / termination. This also handles the case where 358 * the logic above stops in the middle of a duplicate // 359 * sequence (which would otherwise get converted to an 360 * absolute path). */ 361 for (;;) { 362 switch (*p) { 363 case '/': 364 #if defined(_WIN32) && !defined(__CYGWIN__) 365 case '\\': /* Support \ path sep on Windows ONLY. */ 366 #endif 367 ++p; 368 break; 369 case '\0': 370 return (NULL); 371 default: 372 return (p); 373 } 374 } 375 } 376 377 static void 378 warn_strip_leading_char(struct bsdtar *bsdtar, const char *c) 379 { 380 if (!bsdtar->warned_lead_slash) { 381 lafe_warnc(0, 382 "Removing leading '%c' from member names", 383 c[0]); 384 bsdtar->warned_lead_slash = 1; 385 } 386 } 387 388 static void 389 warn_strip_drive_letter(struct bsdtar *bsdtar) 390 { 391 if (!bsdtar->warned_lead_slash) { 392 lafe_warnc(0, 393 "Removing leading drive letter from " 394 "member names"); 395 bsdtar->warned_lead_slash = 1; 396 } 397 } 398 399 /* 400 * Convert absolute path to non-absolute path by skipping leading 401 * absolute path prefixes. 402 */ 403 static const char* 404 strip_absolute_path(struct bsdtar *bsdtar, const char *p) 405 { 406 const char *rp; 407 408 /* Remove leading "//./" or "//?/" or "//?/UNC/" 409 * (absolute path prefixes used by Windows API) */ 410 if ((p[0] == '/' || p[0] == '\\') && 411 (p[1] == '/' || p[1] == '\\') && 412 (p[2] == '.' || p[2] == '?') && 413 (p[3] == '/' || p[3] == '\\')) 414 { 415 if (p[2] == '?' && 416 (p[4] == 'U' || p[4] == 'u') && 417 (p[5] == 'N' || p[5] == 'n') && 418 (p[6] == 'C' || p[6] == 'c') && 419 (p[7] == '/' || p[7] == '\\')) 420 p += 8; 421 else 422 p += 4; 423 warn_strip_drive_letter(bsdtar); 424 } 425 426 /* Remove multiple leading slashes and Windows drive letters. */ 427 do { 428 rp = p; 429 if (((p[0] >= 'a' && p[0] <= 'z') || 430 (p[0] >= 'A' && p[0] <= 'Z')) && 431 p[1] == ':') { 432 p += 2; 433 warn_strip_drive_letter(bsdtar); 434 } 435 436 /* Remove leading "/../", "/./", "//", etc. */ 437 while (p[0] == '/' || p[0] == '\\') { 438 if (p[1] == '.' && 439 p[2] == '.' && 440 (p[3] == '/' || p[3] == '\\')) { 441 p += 3; /* Remove "/..", leave "/" for next pass. */ 442 } else if (p[1] == '.' && 443 (p[2] == '/' || p[2] == '\\')) { 444 p += 2; /* Remove "/.", leave "/" for next pass. */ 445 } else 446 p += 1; /* Remove "/". */ 447 warn_strip_leading_char(bsdtar, rp); 448 } 449 } while (rp != p); 450 451 return (p); 452 } 453 454 /* 455 * Handle --strip-components and any future path-rewriting options. 456 * Returns non-zero if the pathname should not be extracted. 457 * 458 * Note: The rewrites are applied uniformly to pathnames and hardlink 459 * names but not to symlink bodies. This is deliberate: Symlink 460 * bodies are not necessarily filenames. Even when they are, they 461 * need to be interpreted relative to the directory containing them, 462 * so simple rewrites like this are rarely appropriate. 463 * 464 * TODO: Support pax-style regex path rewrites. 465 */ 466 int 467 edit_pathname(struct bsdtar *bsdtar, struct archive_entry *entry) 468 { 469 const char *name = archive_entry_pathname(entry); 470 const char *original_name = name; 471 const char *hardlinkname = archive_entry_hardlink(entry); 472 const char *original_hardlinkname = hardlinkname; 473 #if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H) 474 char *subst_name; 475 int r; 476 477 /* Apply user-specified substitution to pathname. */ 478 r = apply_substitution(bsdtar, name, &subst_name, 0, 0); 479 if (r == -1) { 480 lafe_warnc(0, "Invalid substitution, skipping entry"); 481 return 1; 482 } 483 if (r == 1) { 484 archive_entry_copy_pathname(entry, subst_name); 485 if (*subst_name == '\0') { 486 free(subst_name); 487 return -1; 488 } else 489 free(subst_name); 490 name = archive_entry_pathname(entry); 491 original_name = name; 492 } 493 494 /* Apply user-specified substitution to hardlink target. */ 495 if (hardlinkname != NULL) { 496 r = apply_substitution(bsdtar, hardlinkname, &subst_name, 0, 1); 497 if (r == -1) { 498 lafe_warnc(0, "Invalid substitution, skipping entry"); 499 return 1; 500 } 501 if (r == 1) { 502 archive_entry_copy_hardlink(entry, subst_name); 503 free(subst_name); 504 } 505 hardlinkname = archive_entry_hardlink(entry); 506 original_hardlinkname = hardlinkname; 507 } 508 509 /* Apply user-specified substitution to symlink body. */ 510 if (archive_entry_symlink(entry) != NULL) { 511 r = apply_substitution(bsdtar, archive_entry_symlink(entry), &subst_name, 1, 0); 512 if (r == -1) { 513 lafe_warnc(0, "Invalid substitution, skipping entry"); 514 return 1; 515 } 516 if (r == 1) { 517 archive_entry_copy_symlink(entry, subst_name); 518 free(subst_name); 519 } 520 } 521 #endif 522 523 /* Strip leading dir names as per --strip-components option. */ 524 if (bsdtar->strip_components > 0) { 525 name = strip_components(name, bsdtar->strip_components); 526 if (name == NULL) 527 return (1); 528 529 if (hardlinkname != NULL) { 530 hardlinkname = strip_components(hardlinkname, 531 bsdtar->strip_components); 532 if (hardlinkname == NULL) 533 return (1); 534 } 535 } 536 537 if ((bsdtar->flags & OPTFLAG_ABSOLUTE_PATHS) == 0) { 538 /* By default, don't write or restore absolute pathnames. */ 539 name = strip_absolute_path(bsdtar, name); 540 if (*name == '\0') 541 name = "."; 542 543 if (hardlinkname != NULL) { 544 hardlinkname = strip_absolute_path(bsdtar, hardlinkname); 545 if (*hardlinkname == '\0') 546 return (1); 547 } 548 } else { 549 /* Strip redundant leading '/' characters. */ 550 while (name[0] == '/' && name[1] == '/') 551 name++; 552 } 553 554 /* Replace name in archive_entry. */ 555 if (name != original_name) { 556 archive_entry_copy_pathname(entry, name); 557 } 558 if (hardlinkname != original_hardlinkname) { 559 archive_entry_copy_hardlink(entry, hardlinkname); 560 } 561 return (0); 562 } 563 564 /* 565 * It would be nice to just use printf() for formatting large numbers, 566 * but the compatibility problems are quite a headache. Hence the 567 * following simple utility function. 568 */ 569 const char * 570 tar_i64toa(int64_t n0) 571 { 572 static char buff[24]; 573 uint64_t n = n0 < 0 ? -n0 : n0; 574 char *p = buff + sizeof(buff); 575 576 *--p = '\0'; 577 do { 578 *--p = '0' + (int)(n % 10); 579 } while (n /= 10); 580 if (n0 < 0) 581 *--p = '-'; 582 return p; 583 } 584 585 /* 586 * Like strcmp(), but try to be a little more aware of the fact that 587 * we're comparing two paths. Right now, it just handles leading 588 * "./" and trailing '/' specially, so that "a/b/" == "./a/b" 589 * 590 * TODO: Make this better, so that "./a//b/./c/" == "a/b/c" 591 * TODO: After this works, push it down into libarchive. 592 * TODO: Publish the path normalization routines in libarchive so 593 * that bsdtar can normalize paths and use fast strcmp() instead 594 * of this. 595 * 596 * Note: This is currently only used within write.c, so should 597 * not handle \ path separators. 598 */ 599 600 int 601 pathcmp(const char *a, const char *b) 602 { 603 /* Skip leading './' */ 604 if (a[0] == '.' && a[1] == '/' && a[2] != '\0') 605 a += 2; 606 if (b[0] == '.' && b[1] == '/' && b[2] != '\0') 607 b += 2; 608 /* Find the first difference, or return (0) if none. */ 609 while (*a == *b) { 610 if (*a == '\0') 611 return (0); 612 a++; 613 b++; 614 } 615 /* 616 * If one ends in '/' and the other one doesn't, 617 * they're the same. 618 */ 619 if (a[0] == '/' && a[1] == '\0' && b[0] == '\0') 620 return (0); 621 if (a[0] == '\0' && b[0] == '/' && b[1] == '\0') 622 return (0); 623 /* They're really different, return the correct sign. */ 624 return (*(const unsigned char *)a - *(const unsigned char *)b); 625 } 626 627 #define PPBUFF_SIZE 1024 628 const char * 629 passphrase_callback(struct archive *a, void *_client_data) 630 { 631 struct bsdtar *bsdtar = (struct bsdtar *)_client_data; 632 (void)a; /* UNUSED */ 633 634 if (bsdtar->ppbuff == NULL) { 635 bsdtar->ppbuff = malloc(PPBUFF_SIZE); 636 if (bsdtar->ppbuff == NULL) 637 lafe_errc(1, errno, "Out of memory"); 638 } 639 return lafe_readpassphrase("Enter passphrase:", 640 bsdtar->ppbuff, PPBUFF_SIZE); 641 } 642 643 void 644 passphrase_free(char *ppbuff) 645 { 646 if (ppbuff != NULL) { 647 memset(ppbuff, 0, PPBUFF_SIZE); 648 free(ppbuff); 649 } 650 } 651 652 /* 653 * Display information about the current file. 654 * 655 * The format here roughly duplicates the output of 'ls -l'. 656 * This is based on SUSv2, where 'tar tv' is documented as 657 * listing additional information in an "unspecified format," 658 * and 'pax -l' is documented as using the same format as 'ls -l'. 659 */ 660 void 661 list_item_verbose(struct bsdtar *bsdtar, FILE *out, struct archive_entry *entry) 662 { 663 char tmp[100]; 664 size_t w; 665 const char *p; 666 const char *fmt; 667 time_t tim; 668 static time_t now; 669 670 /* 671 * We avoid collecting the entire list in memory at once by 672 * listing things as we see them. However, that also means we can't 673 * just pre-compute the field widths. Instead, we start with guesses 674 * and just widen them as necessary. These numbers are completely 675 * arbitrary. 676 */ 677 if (!bsdtar->u_width) { 678 bsdtar->u_width = 6; 679 bsdtar->gs_width = 13; 680 } 681 if (!now) 682 time(&now); 683 fprintf(out, "%s %d ", 684 archive_entry_strmode(entry), 685 archive_entry_nlink(entry)); 686 687 /* Use uname if it's present, else uid. */ 688 p = archive_entry_uname(entry); 689 if ((p == NULL) || (*p == '\0')) { 690 sprintf(tmp, "%lu ", 691 (unsigned long)archive_entry_uid(entry)); 692 p = tmp; 693 } 694 w = strlen(p); 695 if (w > bsdtar->u_width) 696 bsdtar->u_width = w; 697 fprintf(out, "%-*s ", (int)bsdtar->u_width, p); 698 699 /* Use gname if it's present, else gid. */ 700 p = archive_entry_gname(entry); 701 if (p != NULL && p[0] != '\0') { 702 fprintf(out, "%s", p); 703 w = strlen(p); 704 } else { 705 sprintf(tmp, "%lu", 706 (unsigned long)archive_entry_gid(entry)); 707 w = strlen(tmp); 708 fprintf(out, "%s", tmp); 709 } 710 711 /* 712 * Print device number or file size, right-aligned so as to make 713 * total width of group and devnum/filesize fields be gs_width. 714 * If gs_width is too small, grow it. 715 */ 716 if (archive_entry_filetype(entry) == AE_IFCHR 717 || archive_entry_filetype(entry) == AE_IFBLK) { 718 sprintf(tmp, "%lu,%lu", 719 (unsigned long)archive_entry_rdevmajor(entry), 720 (unsigned long)archive_entry_rdevminor(entry)); 721 } else { 722 strcpy(tmp, tar_i64toa(archive_entry_size(entry))); 723 } 724 if (w + strlen(tmp) >= bsdtar->gs_width) 725 bsdtar->gs_width = w+strlen(tmp)+1; 726 fprintf(out, "%*s", (int)(bsdtar->gs_width - w), tmp); 727 728 /* Format the time using 'ls -l' conventions. */ 729 tim = archive_entry_mtime(entry); 730 #define HALF_YEAR (time_t)365 * 86400 / 2 731 #if defined(_WIN32) && !defined(__CYGWIN__) 732 #define DAY_FMT "%d" /* Windows' strftime function does not support %e format. */ 733 #else 734 #define DAY_FMT "%e" /* Day number without leading zeros */ 735 #endif 736 if (tim < now - HALF_YEAR || tim > now + HALF_YEAR) 737 fmt = bsdtar->day_first ? DAY_FMT " %b %Y" : "%b " DAY_FMT " %Y"; 738 else 739 fmt = bsdtar->day_first ? DAY_FMT " %b %H:%M" : "%b " DAY_FMT " %H:%M"; 740 strftime(tmp, sizeof(tmp), fmt, localtime(&tim)); 741 fprintf(out, " %s ", tmp); 742 safe_fprintf(out, "%s", archive_entry_pathname(entry)); 743 744 /* Extra information for links. */ 745 if (archive_entry_hardlink(entry)) /* Hard link */ 746 safe_fprintf(out, " link to %s", 747 archive_entry_hardlink(entry)); 748 else if (archive_entry_symlink(entry)) /* Symbolic link */ 749 safe_fprintf(out, " -> %s", archive_entry_symlink(entry)); 750 } 751