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, 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, sizeof(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, sizeof(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 buffsize, 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 snprintf(buff + i, buffsize - 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 size_t new_len = old_len + strlen(newdir) + 2; 313 bsdtar->pending_chdir = malloc(new_len); 314 if (old_pending[old_len - 1] == '/') 315 old_pending[old_len - 1] = '\0'; 316 if (bsdtar->pending_chdir != NULL) 317 snprintf(bsdtar->pending_chdir, new_len, "%s/%s", 318 old_pending, newdir); 319 free(old_pending); 320 } 321 if (bsdtar->pending_chdir == NULL) 322 lafe_errc(1, errno, "No memory"); 323 } 324 325 void 326 do_chdir(struct bsdtar *bsdtar) 327 { 328 if (bsdtar->pending_chdir == NULL) 329 return; 330 331 if (chdir(bsdtar->pending_chdir) != 0) { 332 lafe_errc(1, 0, "could not chdir to '%s'\n", 333 bsdtar->pending_chdir); 334 } 335 free(bsdtar->pending_chdir); 336 bsdtar->pending_chdir = NULL; 337 } 338 339 static const char * 340 strip_components(const char *p, int elements) 341 { 342 /* Skip as many elements as necessary. */ 343 while (elements > 0) { 344 switch (*p++) { 345 case '/': 346 #if defined(_WIN32) && !defined(__CYGWIN__) 347 case '\\': /* Support \ path sep on Windows ONLY. */ 348 #endif 349 elements--; 350 break; 351 case '\0': 352 /* Path is too short, skip it. */ 353 return (NULL); 354 } 355 } 356 357 /* Skip any / characters. This handles short paths that have 358 * additional / termination. This also handles the case where 359 * the logic above stops in the middle of a duplicate // 360 * sequence (which would otherwise get converted to an 361 * absolute path). */ 362 for (;;) { 363 switch (*p) { 364 case '/': 365 #if defined(_WIN32) && !defined(__CYGWIN__) 366 case '\\': /* Support \ path sep on Windows ONLY. */ 367 #endif 368 ++p; 369 break; 370 case '\0': 371 return (NULL); 372 default: 373 return (p); 374 } 375 } 376 } 377 378 static void 379 warn_strip_leading_char(struct bsdtar *bsdtar, const char *c) 380 { 381 if (!bsdtar->warned_lead_slash) { 382 lafe_warnc(0, 383 "Removing leading '%c' from member names", 384 c[0]); 385 bsdtar->warned_lead_slash = 1; 386 } 387 } 388 389 static void 390 warn_strip_drive_letter(struct bsdtar *bsdtar) 391 { 392 if (!bsdtar->warned_lead_slash) { 393 lafe_warnc(0, 394 "Removing leading drive letter from " 395 "member names"); 396 bsdtar->warned_lead_slash = 1; 397 } 398 } 399 400 /* 401 * Convert absolute path to non-absolute path by skipping leading 402 * absolute path prefixes. 403 */ 404 static const char* 405 strip_absolute_path(struct bsdtar *bsdtar, const char *p) 406 { 407 const char *rp; 408 409 /* Remove leading "//./" or "//?/" or "//?/UNC/" 410 * (absolute path prefixes used by Windows API) */ 411 if ((p[0] == '/' || p[0] == '\\') && 412 (p[1] == '/' || p[1] == '\\') && 413 (p[2] == '.' || p[2] == '?') && 414 (p[3] == '/' || p[3] == '\\')) 415 { 416 if (p[2] == '?' && 417 (p[4] == 'U' || p[4] == 'u') && 418 (p[5] == 'N' || p[5] == 'n') && 419 (p[6] == 'C' || p[6] == 'c') && 420 (p[7] == '/' || p[7] == '\\')) 421 p += 8; 422 else 423 p += 4; 424 warn_strip_drive_letter(bsdtar); 425 } 426 427 /* Remove multiple leading slashes and Windows drive letters. */ 428 do { 429 rp = p; 430 if (((p[0] >= 'a' && p[0] <= 'z') || 431 (p[0] >= 'A' && p[0] <= 'Z')) && 432 p[1] == ':') { 433 p += 2; 434 warn_strip_drive_letter(bsdtar); 435 } 436 437 /* Remove leading "/../", "/./", "//", etc. */ 438 while (p[0] == '/' || p[0] == '\\') { 439 if (p[1] == '.' && 440 p[2] == '.' && 441 (p[3] == '/' || p[3] == '\\')) { 442 p += 3; /* Remove "/..", leave "/" for next pass. */ 443 } else if (p[1] == '.' && 444 (p[2] == '/' || p[2] == '\\')) { 445 p += 2; /* Remove "/.", leave "/" for next pass. */ 446 } else 447 p += 1; /* Remove "/". */ 448 warn_strip_leading_char(bsdtar, rp); 449 } 450 } while (rp != p); 451 452 return (p); 453 } 454 455 /* 456 * Handle --strip-components and any future path-rewriting options. 457 * Returns non-zero if the pathname should not be extracted. 458 * 459 * Note: The rewrites are applied uniformly to pathnames and hardlink 460 * names but not to symlink bodies. This is deliberate: Symlink 461 * bodies are not necessarily filenames. Even when they are, they 462 * need to be interpreted relative to the directory containing them, 463 * so simple rewrites like this are rarely appropriate. 464 * 465 * TODO: Support pax-style regex path rewrites. 466 */ 467 int 468 edit_pathname(struct bsdtar *bsdtar, struct archive_entry *entry) 469 { 470 const char *name = archive_entry_pathname(entry); 471 const char *original_name = name; 472 const char *hardlinkname = archive_entry_hardlink(entry); 473 const char *original_hardlinkname = hardlinkname; 474 #if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H) 475 char *subst_name; 476 int r; 477 478 /* Apply user-specified substitution to pathname. */ 479 r = apply_substitution(bsdtar, name, &subst_name, 0, 0); 480 if (r == -1) { 481 lafe_warnc(0, "Invalid substitution, skipping entry"); 482 return 1; 483 } 484 if (r == 1) { 485 archive_entry_copy_pathname(entry, subst_name); 486 if (*subst_name == '\0') { 487 free(subst_name); 488 return -1; 489 } else 490 free(subst_name); 491 name = archive_entry_pathname(entry); 492 original_name = name; 493 } 494 495 /* Apply user-specified substitution to hardlink target. */ 496 if (hardlinkname != NULL) { 497 r = apply_substitution(bsdtar, hardlinkname, &subst_name, 0, 1); 498 if (r == -1) { 499 lafe_warnc(0, "Invalid substitution, skipping entry"); 500 return 1; 501 } 502 if (r == 1) { 503 archive_entry_copy_hardlink(entry, subst_name); 504 free(subst_name); 505 } 506 hardlinkname = archive_entry_hardlink(entry); 507 original_hardlinkname = hardlinkname; 508 } 509 510 /* Apply user-specified substitution to symlink body. */ 511 if (archive_entry_symlink(entry) != NULL) { 512 r = apply_substitution(bsdtar, archive_entry_symlink(entry), &subst_name, 1, 0); 513 if (r == -1) { 514 lafe_warnc(0, "Invalid substitution, skipping entry"); 515 return 1; 516 } 517 if (r == 1) { 518 archive_entry_copy_symlink(entry, subst_name); 519 free(subst_name); 520 } 521 } 522 #endif 523 524 /* Strip leading dir names as per --strip-components option. */ 525 if (bsdtar->strip_components > 0) { 526 name = strip_components(name, bsdtar->strip_components); 527 if (name == NULL) 528 return (1); 529 530 if (hardlinkname != NULL) { 531 hardlinkname = strip_components(hardlinkname, 532 bsdtar->strip_components); 533 if (hardlinkname == NULL) 534 return (1); 535 } 536 } 537 538 if ((bsdtar->flags & OPTFLAG_ABSOLUTE_PATHS) == 0) { 539 /* By default, don't write or restore absolute pathnames. */ 540 name = strip_absolute_path(bsdtar, name); 541 if (*name == '\0') 542 name = "."; 543 544 if (hardlinkname != NULL) { 545 hardlinkname = strip_absolute_path(bsdtar, hardlinkname); 546 if (*hardlinkname == '\0') 547 return (1); 548 } 549 } else { 550 /* Strip redundant leading '/' characters. */ 551 while (name[0] == '/' && name[1] == '/') 552 name++; 553 } 554 555 /* Replace name in archive_entry. */ 556 if (name != original_name) { 557 archive_entry_copy_pathname(entry, name); 558 } 559 if (hardlinkname != original_hardlinkname) { 560 archive_entry_copy_hardlink(entry, hardlinkname); 561 } 562 return (0); 563 } 564 565 /* 566 * It would be nice to just use printf() for formatting large numbers, 567 * but the compatibility problems are quite a headache. Hence the 568 * following simple utility function. 569 */ 570 const char * 571 tar_i64toa(int64_t n0) 572 { 573 static char buff[24]; 574 uint64_t n = n0 < 0 ? -n0 : n0; 575 char *p = buff + sizeof(buff); 576 577 *--p = '\0'; 578 do { 579 *--p = '0' + (int)(n % 10); 580 } while (n /= 10); 581 if (n0 < 0) 582 *--p = '-'; 583 return p; 584 } 585 586 /* 587 * Like strcmp(), but try to be a little more aware of the fact that 588 * we're comparing two paths. Right now, it just handles leading 589 * "./" and trailing '/' specially, so that "a/b/" == "./a/b" 590 * 591 * TODO: Make this better, so that "./a//b/./c/" == "a/b/c" 592 * TODO: After this works, push it down into libarchive. 593 * TODO: Publish the path normalization routines in libarchive so 594 * that bsdtar can normalize paths and use fast strcmp() instead 595 * of this. 596 * 597 * Note: This is currently only used within write.c, so should 598 * not handle \ path separators. 599 */ 600 601 int 602 pathcmp(const char *a, const char *b) 603 { 604 /* Skip leading './' */ 605 if (a[0] == '.' && a[1] == '/' && a[2] != '\0') 606 a += 2; 607 if (b[0] == '.' && b[1] == '/' && b[2] != '\0') 608 b += 2; 609 /* Find the first difference, or return (0) if none. */ 610 while (*a == *b) { 611 if (*a == '\0') 612 return (0); 613 a++; 614 b++; 615 } 616 /* 617 * If one ends in '/' and the other one doesn't, 618 * they're the same. 619 */ 620 if (a[0] == '/' && a[1] == '\0' && b[0] == '\0') 621 return (0); 622 if (a[0] == '\0' && b[0] == '/' && b[1] == '\0') 623 return (0); 624 /* They're really different, return the correct sign. */ 625 return (*(const unsigned char *)a - *(const unsigned char *)b); 626 } 627 628 #define PPBUFF_SIZE 1024 629 const char * 630 passphrase_callback(struct archive *a, void *_client_data) 631 { 632 struct bsdtar *bsdtar = (struct bsdtar *)_client_data; 633 (void)a; /* UNUSED */ 634 635 if (bsdtar->ppbuff == NULL) { 636 bsdtar->ppbuff = malloc(PPBUFF_SIZE); 637 if (bsdtar->ppbuff == NULL) 638 lafe_errc(1, errno, "Out of memory"); 639 } 640 return lafe_readpassphrase("Enter passphrase:", 641 bsdtar->ppbuff, PPBUFF_SIZE); 642 } 643 644 void 645 passphrase_free(char *ppbuff) 646 { 647 if (ppbuff != NULL) { 648 memset(ppbuff, 0, PPBUFF_SIZE); 649 free(ppbuff); 650 } 651 } 652 653 /* 654 * Display information about the current file. 655 * 656 * The format here roughly duplicates the output of 'ls -l'. 657 * This is based on SUSv2, where 'tar tv' is documented as 658 * listing additional information in an "unspecified format," 659 * and 'pax -l' is documented as using the same format as 'ls -l'. 660 */ 661 void 662 list_item_verbose(struct bsdtar *bsdtar, FILE *out, struct archive_entry *entry) 663 { 664 char tmp[100]; 665 size_t w; 666 const char *p; 667 const char *fmt; 668 time_t tim; 669 static time_t now; 670 struct tm *ltime; 671 #if defined(HAVE_LOCALTIME_R) || defined(HAVE__LOCALTIME64_S) 672 struct tm tmbuf; 673 #endif 674 #if defined(HAVE__LOCALTIME64_S) 675 errno_t terr; 676 __time64_t tmptime; 677 #endif 678 679 /* 680 * We avoid collecting the entire list in memory at once by 681 * listing things as we see them. However, that also means we can't 682 * just pre-compute the field widths. Instead, we start with guesses 683 * and just widen them as necessary. These numbers are completely 684 * arbitrary. 685 */ 686 if (!bsdtar->u_width) { 687 bsdtar->u_width = 6; 688 bsdtar->gs_width = 13; 689 } 690 if (!now) 691 time(&now); 692 fprintf(out, "%s %d ", 693 archive_entry_strmode(entry), 694 archive_entry_nlink(entry)); 695 696 /* Use uname if it's present, else uid. */ 697 p = archive_entry_uname(entry); 698 if ((p == NULL) || (*p == '\0')) { 699 snprintf(tmp, sizeof(tmp), "%lu ", 700 (unsigned long)archive_entry_uid(entry)); 701 p = tmp; 702 } 703 w = strlen(p); 704 if (w > bsdtar->u_width) 705 bsdtar->u_width = w; 706 fprintf(out, "%-*s ", (int)bsdtar->u_width, p); 707 708 /* Use gname if it's present, else gid. */ 709 p = archive_entry_gname(entry); 710 if (p != NULL && p[0] != '\0') { 711 fprintf(out, "%s", p); 712 w = strlen(p); 713 } else { 714 snprintf(tmp, sizeof(tmp), "%lu", 715 (unsigned long)archive_entry_gid(entry)); 716 w = strlen(tmp); 717 fprintf(out, "%s", tmp); 718 } 719 720 /* 721 * Print device number or file size, right-aligned so as to make 722 * total width of group and devnum/filesize fields be gs_width. 723 * If gs_width is too small, grow it. 724 */ 725 if (archive_entry_filetype(entry) == AE_IFCHR 726 || archive_entry_filetype(entry) == AE_IFBLK) { 727 snprintf(tmp, sizeof(tmp), "%lu,%lu", 728 (unsigned long)archive_entry_rdevmajor(entry), 729 (unsigned long)archive_entry_rdevminor(entry)); 730 } else { 731 strcpy(tmp, tar_i64toa(archive_entry_size(entry))); 732 } 733 if (w + strlen(tmp) >= bsdtar->gs_width) 734 bsdtar->gs_width = w+strlen(tmp)+1; 735 fprintf(out, "%*s", (int)(bsdtar->gs_width - w), tmp); 736 737 /* Format the time using 'ls -l' conventions. */ 738 tim = archive_entry_mtime(entry); 739 #define HALF_YEAR (time_t)365 * 86400 / 2 740 #if defined(_WIN32) && !defined(__CYGWIN__) 741 #define DAY_FMT "%d" /* Windows' strftime function does not support %e format. */ 742 #else 743 #define DAY_FMT "%e" /* Day number without leading zeros */ 744 #endif 745 if (tim < now - HALF_YEAR || tim > now + HALF_YEAR) 746 fmt = bsdtar->day_first ? DAY_FMT " %b %Y" : "%b " DAY_FMT " %Y"; 747 else 748 fmt = bsdtar->day_first ? DAY_FMT " %b %H:%M" : "%b " DAY_FMT " %H:%M"; 749 #if defined(HAVE_LOCALTIME_R) 750 ltime = localtime_r(&tim, &tmbuf); 751 #elif defined(HAVE__LOCALTIME64_S) 752 tmptime = tim; 753 terr = _localtime64_s(&tmbuf, &tmptime); 754 if (terr) 755 ltime = NULL; 756 else 757 ltime = &tmbuf; 758 #else 759 ltime = localtime(&tim); 760 #endif 761 strftime(tmp, sizeof(tmp), fmt, ltime); 762 fprintf(out, " %s ", tmp); 763 safe_fprintf(out, "%s", archive_entry_pathname(entry)); 764 765 /* Extra information for links. */ 766 if (archive_entry_hardlink(entry)) /* Hard link */ 767 safe_fprintf(out, " link to %s", 768 archive_entry_hardlink(entry)); 769 else if (archive_entry_symlink(entry)) /* Symbolic link */ 770 safe_fprintf(out, " -> %s", archive_entry_symlink(entry)); 771 } 772