2 * Copyright (c) 2003-2007 Tim Kientzle
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
26 #include "bsdtar_platform.h"
27 __FBSDID("$FreeBSD$");
29 #ifdef HAVE_SYS_TYPES_H
30 #include <sys/types.h>
33 #include <sys/mkdev.h>
34 #elif defined(MAJOR_IN_SYSMACROS)
35 #include <sys/sysmacros.h>
37 #ifdef HAVE_SYS_PARAM_H
38 #include <sys/param.h>
40 #ifdef HAVE_SYS_STAT_H
72 static void list_item_verbose(struct bsdtar *, FILE *,
73 struct archive_entry *);
74 static void read_archive(struct bsdtar *bsdtar, char mode);
77 tar_mode_t(struct bsdtar *bsdtar)
79 read_archive(bsdtar, 't');
80 unmatched_inclusions_warn(bsdtar, "Not found in archive");
84 tar_mode_x(struct bsdtar *bsdtar)
86 /* We want to catch SIGINFO and SIGUSR1. */
89 read_archive(bsdtar, 'x');
91 unmatched_inclusions_warn(bsdtar, "Not found in archive");
92 /* Restore old SIGINFO + SIGUSR1 handlers. */
97 progress_func(void * cookie)
99 struct bsdtar * bsdtar = cookie;
101 siginfo_printinfo(bsdtar, 0);
105 * Handle 'x' and 't' modes.
108 read_archive(struct bsdtar *bsdtar, char mode)
112 struct archive_entry *entry;
113 const struct stat *st;
116 while (*bsdtar->argv) {
117 include(bsdtar, *bsdtar->argv);
121 if (bsdtar->names_from_file != NULL)
122 include_from_file(bsdtar, bsdtar->names_from_file);
124 a = archive_read_new();
125 if (bsdtar->compress_program != NULL)
126 archive_read_support_compression_program(a, bsdtar->compress_program);
128 archive_read_support_compression_all(a);
129 archive_read_support_format_all(a);
130 if (ARCHIVE_OK != archive_read_set_options(a, bsdtar->option_options))
131 bsdtar_errc(bsdtar, 1, 0, archive_error_string(a));
132 if (archive_read_open_file(a, bsdtar->filename,
133 bsdtar->bytes_per_block != 0 ? bsdtar->bytes_per_block :
134 DEFAULT_BYTES_PER_BLOCK))
135 bsdtar_errc(bsdtar, 1, 0, "Error opening archive: %s",
136 archive_error_string(a));
141 /* Set an extract callback so that we can handle SIGINFO. */
142 archive_read_extract_set_progress_callback(a, progress_func,
146 if (mode == 'x' && bsdtar->option_chroot) {
148 if (chroot(".") != 0)
149 bsdtar_errc(bsdtar, 1, errno, "Can't chroot to \".\"");
151 bsdtar_errc(bsdtar, 1, 0,
152 "chroot isn't supported on this platform");
157 /* Support --fast-read option */
158 if (bsdtar->option_fast_read &&
159 unmatched_inclusions(bsdtar) == 0)
162 r = archive_read_next_header(a, &entry);
163 if (r == ARCHIVE_EOF)
166 bsdtar_warnc(bsdtar, 0, "%s", archive_error_string(a));
167 if (r <= ARCHIVE_WARN)
168 bsdtar->return_value = 1;
169 if (r == ARCHIVE_RETRY) {
170 /* Retryable error: try again */
171 bsdtar_warnc(bsdtar, 0, "Retrying...");
174 if (r == ARCHIVE_FATAL)
177 if (bsdtar->option_numeric_owner) {
178 archive_entry_set_uname(entry, NULL);
179 archive_entry_set_gname(entry, NULL);
183 * Exclude entries that are too old.
185 st = archive_entry_stat(entry);
186 if (bsdtar->newer_ctime_sec > 0) {
187 if (st->st_ctime < bsdtar->newer_ctime_sec)
188 continue; /* Too old, skip it. */
189 if (st->st_ctime == bsdtar->newer_ctime_sec
190 && ARCHIVE_STAT_CTIME_NANOS(st)
191 <= bsdtar->newer_ctime_nsec)
192 continue; /* Too old, skip it. */
194 if (bsdtar->newer_mtime_sec > 0) {
195 if (st->st_mtime < bsdtar->newer_mtime_sec)
196 continue; /* Too old, skip it. */
197 if (st->st_mtime == bsdtar->newer_mtime_sec
198 && ARCHIVE_STAT_MTIME_NANOS(st)
199 <= bsdtar->newer_mtime_nsec)
200 continue; /* Too old, skip it. */
204 * Note that pattern exclusions are checked before
205 * pathname rewrites are handled. This gives more
206 * control over exclusions, since rewrites always lose
207 * information. (For example, consider a rewrite
208 * s/foo[0-9]/foo/. If we check exclusions after the
209 * rewrite, there would be no way to exclude foo1/bar
210 * while allowing foo2/bar.)
212 if (excluded(bsdtar, archive_entry_pathname(entry)))
213 continue; /* Excluded by a pattern test. */
216 /* Perversely, gtar uses -O to mean "send to stderr"
217 * when used with -t. */
218 out = bsdtar->option_stdout ? stderr : stdout;
221 * TODO: Provide some reasonable way to
222 * preview rewrites. gtar always displays
223 * the unedited path in -t output, which means
224 * you cannot easily preview rewrites.
226 if (bsdtar->verbose < 2)
227 safe_fprintf(out, "%s",
228 archive_entry_pathname(entry));
230 list_item_verbose(bsdtar, out, entry);
232 r = archive_read_data_skip(a);
233 if (r == ARCHIVE_WARN) {
235 bsdtar_warnc(bsdtar, 0, "%s",
236 archive_error_string(a));
238 if (r == ARCHIVE_RETRY) {
240 bsdtar_warnc(bsdtar, 0, "%s",
241 archive_error_string(a));
243 if (r == ARCHIVE_FATAL) {
245 bsdtar_warnc(bsdtar, 0, "%s",
246 archive_error_string(a));
247 bsdtar->return_value = 1;
252 /* Note: some rewrite failures prevent extraction. */
253 if (edit_pathname(bsdtar, entry))
254 continue; /* Excluded by a rewrite failure. */
256 if (bsdtar->option_interactive &&
257 !yes("extract '%s'", archive_entry_pathname(entry)))
261 * Format here is from SUSv2, including the
264 if (bsdtar->verbose) {
265 safe_fprintf(stderr, "x %s",
266 archive_entry_pathname(entry));
270 /* Tell the SIGINFO-handler code what we're doing. */
271 siginfo_setinfo(bsdtar, "extracting",
272 archive_entry_pathname(entry), 0);
273 siginfo_printinfo(bsdtar, 0);
275 if (bsdtar->option_stdout)
276 r = archive_read_data_into_fd(a, 1);
278 r = archive_read_extract(a, entry,
279 bsdtar->extract_flags);
280 if (r != ARCHIVE_OK) {
281 if (!bsdtar->verbose)
282 safe_fprintf(stderr, "%s",
283 archive_entry_pathname(entry));
284 safe_fprintf(stderr, ": %s",
285 archive_error_string(a));
286 if (!bsdtar->verbose)
287 fprintf(stderr, "\n");
288 bsdtar->return_value = 1;
291 fprintf(stderr, "\n");
292 if (r == ARCHIVE_FATAL)
298 r = archive_read_close(a);
300 bsdtar_warnc(bsdtar, 0, "%s", archive_error_string(a));
301 if (r <= ARCHIVE_WARN)
302 bsdtar->return_value = 1;
304 if (bsdtar->verbose > 2)
305 fprintf(stdout, "Archive Format: %s, Compression: %s\n",
306 archive_format_name(a), archive_compression_name(a));
308 archive_read_finish(a);
313 * Display information about the current file.
315 * The format here roughly duplicates the output of 'ls -l'.
316 * This is based on SUSv2, where 'tar tv' is documented as
317 * listing additional information in an "unspecified format,"
318 * and 'pax -l' is documented as using the same format as 'ls -l'.
321 list_item_verbose(struct bsdtar *bsdtar, FILE *out, struct archive_entry *entry)
323 const struct stat *st;
331 st = archive_entry_stat(entry);
334 * We avoid collecting the entire list in memory at once by
335 * listing things as we see them. However, that also means we can't
336 * just pre-compute the field widths. Instead, we start with guesses
337 * and just widen them as necessary. These numbers are completely
340 if (!bsdtar->u_width) {
342 bsdtar->gs_width = 13;
346 fprintf(out, "%s %d ",
347 archive_entry_strmode(entry),
348 (int)(st->st_nlink));
350 /* Use uname if it's present, else uid. */
351 p = archive_entry_uname(entry);
352 if ((p == NULL) || (*p == '\0')) {
353 sprintf(tmp, "%lu ", (unsigned long)st->st_uid);
357 if (w > bsdtar->u_width)
359 fprintf(out, "%-*s ", (int)bsdtar->u_width, p);
361 /* Use gname if it's present, else gid. */
362 p = archive_entry_gname(entry);
363 if (p != NULL && p[0] != '\0') {
364 fprintf(out, "%s", p);
367 sprintf(tmp, "%lu", (unsigned long)st->st_gid);
369 fprintf(out, "%s", tmp);
373 * Print device number or file size, right-aligned so as to make
374 * total width of group and devnum/filesize fields be gs_width.
375 * If gs_width is too small, grow it.
377 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) {
378 sprintf(tmp, "%lu,%lu",
379 (unsigned long)major(st->st_rdev),
380 (unsigned long)minor(st->st_rdev)); /* ls(1) also casts here. */
383 * Note the use of platform-dependent macros to format
384 * the filesize here. We need the format string and the
385 * corresponding type for the cast.
387 sprintf(tmp, BSDTAR_FILESIZE_PRINTF,
388 (BSDTAR_FILESIZE_TYPE)st->st_size);
390 if (w + strlen(tmp) >= bsdtar->gs_width)
391 bsdtar->gs_width = w+strlen(tmp)+1;
392 fprintf(out, "%*s", (int)(bsdtar->gs_width - w), tmp);
394 /* Format the time using 'ls -l' conventions. */
395 tim = (time_t)st->st_mtime;
396 #if defined(_WIN32) && !defined(__CYGWIN__)
397 /* Windows' strftime function does not support %e format. */
398 if (abs(tim - now) > (365/2)*86400)
399 fmt = bsdtar->day_first ? "%d %b %Y" : "%b %d %Y";
401 fmt = bsdtar->day_first ? "%d %b %H:%M" : "%b %d %H:%M";
403 if (abs(tim - now) > (365/2)*86400)
404 fmt = bsdtar->day_first ? "%e %b %Y" : "%b %e %Y";
406 fmt = bsdtar->day_first ? "%e %b %H:%M" : "%b %e %H:%M";
408 strftime(tmp, sizeof(tmp), fmt, localtime(&tim));
409 fprintf(out, " %s ", tmp);
410 safe_fprintf(out, "%s", archive_entry_pathname(entry));
412 /* Extra information for links. */
413 if (archive_entry_hardlink(entry)) /* Hard link */
414 safe_fprintf(out, " link to %s",
415 archive_entry_hardlink(entry));
416 else if (S_ISLNK(st->st_mode)) /* Symbolic link */
417 safe_fprintf(out, " -> %s", archive_entry_symlink(entry));