diff options
Diffstat (limited to 'usr.bin/tar/read.c')
| -rw-r--r-- | usr.bin/tar/read.c | 450 |
1 files changed, 0 insertions, 450 deletions
diff --git a/usr.bin/tar/read.c b/usr.bin/tar/read.c deleted file mode 100644 index 6b1e5ec..0000000 --- a/usr.bin/tar/read.c +++ /dev/null @@ -1,450 +0,0 @@ -/*- - * Copyright (c) 2003-2007 Tim Kientzle - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "bsdtar_platform.h" -__FBSDID("$FreeBSD$"); - -#ifdef HAVE_SYS_TYPES_H -#include <sys/types.h> -#endif -#ifdef HAVE_SYS_PARAM_H -#include <sys/param.h> -#endif -#ifdef HAVE_SYS_STAT_H -#include <sys/stat.h> -#endif - -#ifdef HAVE_ERRNO_H -#include <errno.h> -#endif -#ifdef HAVE_GRP_H -#include <grp.h> -#endif -#ifdef HAVE_LIMITS_H -#include <limits.h> -#endif -#ifdef HAVE_PWD_H -#include <pwd.h> -#endif -#ifdef HAVE_STDINT_H -#include <stdint.h> -#endif -#include <stdio.h> -#ifdef HAVE_STDLIB_H -#include <stdlib.h> -#endif -#ifdef HAVE_STRING_H -#include <string.h> -#endif -#ifdef HAVE_TIME_H -#include <time.h> -#endif -#ifdef HAVE_UNISTD_H -#include <unistd.h> -#endif - -#include "bsdtar.h" -#include "err.h" - -struct progress_data { - struct bsdtar *bsdtar; - struct archive *archive; - struct archive_entry *entry; -}; - -static void list_item_verbose(struct bsdtar *, FILE *, - struct archive_entry *); -static void read_archive(struct bsdtar *bsdtar, char mode); - -void -tar_mode_t(struct bsdtar *bsdtar) -{ - read_archive(bsdtar, 't'); - if (lafe_unmatched_inclusions_warn(bsdtar->matching, "Not found in archive") != 0) - bsdtar->return_value = 1; -} - -void -tar_mode_x(struct bsdtar *bsdtar) -{ - read_archive(bsdtar, 'x'); - - if (lafe_unmatched_inclusions_warn(bsdtar->matching, "Not found in archive") != 0) - bsdtar->return_value = 1; -} - -static void -progress_func(void *cookie) -{ - struct progress_data *progress_data = cookie; - struct bsdtar *bsdtar = progress_data->bsdtar; - struct archive *a = progress_data->archive; - struct archive_entry *entry = progress_data->entry; - uint64_t comp, uncomp; - int compression; - - if (!need_report()) - return; - - if (bsdtar->verbose) - fprintf(stderr, "\n"); - if (a != NULL) { - comp = archive_position_compressed(a); - uncomp = archive_position_uncompressed(a); - if (comp > uncomp) - compression = 0; - else - compression = (int)((uncomp - comp) * 100 / uncomp); - fprintf(stderr, - "In: %s bytes, compression %d%%;", - tar_i64toa(comp), compression); - fprintf(stderr, " Out: %d files, %s bytes\n", - archive_file_count(a), tar_i64toa(uncomp)); - } - if (entry != NULL) { - safe_fprintf(stderr, "Current: %s", - archive_entry_pathname(entry)); - fprintf(stderr, " (%s bytes)\n", - tar_i64toa(archive_entry_size(entry))); - } -} - -/* - * Handle 'x' and 't' modes. - */ -static void -read_archive(struct bsdtar *bsdtar, char mode) -{ - struct progress_data progress_data; - FILE *out; - struct archive *a; - struct archive_entry *entry; - const struct stat *st; - int r; - - while (*bsdtar->argv) { - lafe_include(&bsdtar->matching, *bsdtar->argv); - bsdtar->argv++; - } - - if (bsdtar->names_from_file != NULL) - lafe_include_from_file(&bsdtar->matching, - bsdtar->names_from_file, bsdtar->option_null); - - a = archive_read_new(); - if (bsdtar->compress_program != NULL) - archive_read_support_compression_program(a, bsdtar->compress_program); - else - archive_read_support_compression_all(a); - archive_read_support_format_all(a); - if (ARCHIVE_OK != archive_read_set_options(a, bsdtar->option_options)) - lafe_errc(1, 0, "%s", archive_error_string(a)); - if (archive_read_open_file(a, bsdtar->filename, - bsdtar->bytes_per_block != 0 ? bsdtar->bytes_per_block : - DEFAULT_BYTES_PER_BLOCK)) - lafe_errc(1, 0, "Error opening archive: %s", - archive_error_string(a)); - - do_chdir(bsdtar); - - if (mode == 'x') { - /* Set an extract callback so that we can handle SIGINFO. */ - progress_data.bsdtar = bsdtar; - progress_data.archive = a; - archive_read_extract_set_progress_callback(a, progress_func, - &progress_data); - } - - if (mode == 'x' && bsdtar->option_chroot) { -#if HAVE_CHROOT - if (chroot(".") != 0) - lafe_errc(1, errno, "Can't chroot to \".\""); -#else - lafe_errc(1, 0, - "chroot isn't supported on this platform"); -#endif - } - - for (;;) { - /* Support --fast-read option */ - if (bsdtar->option_fast_read && - lafe_unmatched_inclusions(bsdtar->matching) == 0) - break; - - r = archive_read_next_header(a, &entry); - progress_data.entry = entry; - if (r == ARCHIVE_EOF) - break; - if (r < ARCHIVE_OK) - lafe_warnc(0, "%s", archive_error_string(a)); - if (r <= ARCHIVE_WARN) - bsdtar->return_value = 1; - if (r == ARCHIVE_RETRY) { - /* Retryable error: try again */ - lafe_warnc(0, "Retrying..."); - continue; - } - if (r == ARCHIVE_FATAL) - break; - - if (bsdtar->uid >= 0) { - archive_entry_set_uid(entry, bsdtar->uid); - archive_entry_set_uname(entry, NULL); - } - if (bsdtar->gid >= 0) { - archive_entry_set_gid(entry, bsdtar->gid); - archive_entry_set_gname(entry, NULL); - } - if (bsdtar->uname) - archive_entry_set_uname(entry, bsdtar->uname); - if (bsdtar->gname) - archive_entry_set_gname(entry, bsdtar->gname); - - /* - * Exclude entries that are too old. - */ - st = archive_entry_stat(entry); - if (bsdtar->newer_ctime_sec > 0) { - if (st->st_ctime < bsdtar->newer_ctime_sec) - continue; /* Too old, skip it. */ - if (st->st_ctime == bsdtar->newer_ctime_sec - && ARCHIVE_STAT_CTIME_NANOS(st) - <= bsdtar->newer_ctime_nsec) - continue; /* Too old, skip it. */ - } - if (bsdtar->newer_mtime_sec > 0) { - if (st->st_mtime < bsdtar->newer_mtime_sec) - continue; /* Too old, skip it. */ - if (st->st_mtime == bsdtar->newer_mtime_sec - && ARCHIVE_STAT_MTIME_NANOS(st) - <= bsdtar->newer_mtime_nsec) - continue; /* Too old, skip it. */ - } - - /* - * Note that pattern exclusions are checked before - * pathname rewrites are handled. This gives more - * control over exclusions, since rewrites always lose - * information. (For example, consider a rewrite - * s/foo[0-9]/foo/. If we check exclusions after the - * rewrite, there would be no way to exclude foo1/bar - * while allowing foo2/bar.) - */ - if (lafe_excluded(bsdtar->matching, archive_entry_pathname(entry))) - continue; /* Excluded by a pattern test. */ - - if (mode == 't') { - /* Perversely, gtar uses -O to mean "send to stderr" - * when used with -t. */ - out = bsdtar->option_stdout ? stderr : stdout; - - /* - * TODO: Provide some reasonable way to - * preview rewrites. gtar always displays - * the unedited path in -t output, which means - * you cannot easily preview rewrites. - */ - if (bsdtar->verbose < 2) - safe_fprintf(out, "%s", - archive_entry_pathname(entry)); - else - list_item_verbose(bsdtar, out, entry); - fflush(out); - r = archive_read_data_skip(a); - if (r == ARCHIVE_WARN) { - fprintf(out, "\n"); - lafe_warnc(0, "%s", - archive_error_string(a)); - } - if (r == ARCHIVE_RETRY) { - fprintf(out, "\n"); - lafe_warnc(0, "%s", - archive_error_string(a)); - } - if (r == ARCHIVE_FATAL) { - fprintf(out, "\n"); - lafe_warnc(0, "%s", - archive_error_string(a)); - bsdtar->return_value = 1; - break; - } - fprintf(out, "\n"); - } else { - /* Note: some rewrite failures prevent extraction. */ - if (edit_pathname(bsdtar, entry)) - continue; /* Excluded by a rewrite failure. */ - - if (bsdtar->option_interactive && - !yes("extract '%s'", archive_entry_pathname(entry))) - continue; - - /* - * Format here is from SUSv2, including the - * deferred '\n'. - */ - if (bsdtar->verbose) { - safe_fprintf(stderr, "x %s", - archive_entry_pathname(entry)); - fflush(stderr); - } - - // TODO siginfo_printinfo(bsdtar, 0); - - if (bsdtar->option_stdout) - r = archive_read_data_into_fd(a, 1); - else - r = archive_read_extract(a, entry, - bsdtar->extract_flags); - if (r != ARCHIVE_OK) { - if (!bsdtar->verbose) - safe_fprintf(stderr, "%s", - archive_entry_pathname(entry)); - safe_fprintf(stderr, ": %s", - archive_error_string(a)); - if (!bsdtar->verbose) - fprintf(stderr, "\n"); - bsdtar->return_value = 1; - } - if (bsdtar->verbose) - fprintf(stderr, "\n"); - if (r == ARCHIVE_FATAL) - break; - } - } - - - r = archive_read_close(a); - if (r != ARCHIVE_OK) - lafe_warnc(0, "%s", archive_error_string(a)); - if (r <= ARCHIVE_WARN) - bsdtar->return_value = 1; - - if (bsdtar->verbose > 2) - fprintf(stdout, "Archive Format: %s, Compression: %s\n", - archive_format_name(a), archive_compression_name(a)); - - archive_read_finish(a); -} - - -/* - * Display information about the current file. - * - * The format here roughly duplicates the output of 'ls -l'. - * This is based on SUSv2, where 'tar tv' is documented as - * listing additional information in an "unspecified format," - * and 'pax -l' is documented as using the same format as 'ls -l'. - */ -static void -list_item_verbose(struct bsdtar *bsdtar, FILE *out, struct archive_entry *entry) -{ - char tmp[100]; - size_t w; - const char *p; - const char *fmt; - time_t tim; - static time_t now; - - /* - * We avoid collecting the entire list in memory at once by - * listing things as we see them. However, that also means we can't - * just pre-compute the field widths. Instead, we start with guesses - * and just widen them as necessary. These numbers are completely - * arbitrary. - */ - if (!bsdtar->u_width) { - bsdtar->u_width = 6; - bsdtar->gs_width = 13; - } - if (!now) - time(&now); - fprintf(out, "%s %d ", - archive_entry_strmode(entry), - archive_entry_nlink(entry)); - - /* Use uname if it's present, else uid. */ - p = archive_entry_uname(entry); - if ((p == NULL) || (*p == '\0')) { - sprintf(tmp, "%lu ", - (unsigned long)archive_entry_uid(entry)); - p = tmp; - } - w = strlen(p); - if (w > bsdtar->u_width) - bsdtar->u_width = w; - fprintf(out, "%-*s ", (int)bsdtar->u_width, p); - - /* Use gname if it's present, else gid. */ - p = archive_entry_gname(entry); - if (p != NULL && p[0] != '\0') { - fprintf(out, "%s", p); - w = strlen(p); - } else { - sprintf(tmp, "%lu", - (unsigned long)archive_entry_gid(entry)); - w = strlen(tmp); - fprintf(out, "%s", tmp); - } - - /* - * Print device number or file size, right-aligned so as to make - * total width of group and devnum/filesize fields be gs_width. - * If gs_width is too small, grow it. - */ - if (archive_entry_filetype(entry) == AE_IFCHR - || archive_entry_filetype(entry) == AE_IFBLK) { - sprintf(tmp, "%lu,%lu", - (unsigned long)archive_entry_rdevmajor(entry), - (unsigned long)archive_entry_rdevminor(entry)); - } else { - strcpy(tmp, tar_i64toa(archive_entry_size(entry))); - } - if (w + strlen(tmp) >= bsdtar->gs_width) - bsdtar->gs_width = w+strlen(tmp)+1; - fprintf(out, "%*s", (int)(bsdtar->gs_width - w), tmp); - - /* Format the time using 'ls -l' conventions. */ - tim = archive_entry_mtime(entry); -#define HALF_YEAR (time_t)365 * 86400 / 2 -#if defined(_WIN32) && !defined(__CYGWIN__) -#define DAY_FMT "%d" /* Windows' strftime function does not support %e format. */ -#else -#define DAY_FMT "%e" /* Day number without leading zeros */ -#endif - if (tim < now - HALF_YEAR || tim > now + HALF_YEAR) - fmt = bsdtar->day_first ? DAY_FMT " %b %Y" : "%b " DAY_FMT " %Y"; - else - fmt = bsdtar->day_first ? DAY_FMT " %b %H:%M" : "%b " DAY_FMT " %H:%M"; - strftime(tmp, sizeof(tmp), fmt, localtime(&tim)); - fprintf(out, " %s ", tmp); - safe_fprintf(out, "%s", archive_entry_pathname(entry)); - - /* Extra information for links. */ - if (archive_entry_hardlink(entry)) /* Hard link */ - safe_fprintf(out, " link to %s", - archive_entry_hardlink(entry)); - else if (archive_entry_symlink(entry)) /* Symbolic link */ - safe_fprintf(out, " -> %s", archive_entry_symlink(entry)); -} |
