1 /* vi: set sw=4 ts=4: */
3 * Mini ar implementation for busybox
5 * Copyright (C) 2000 by Glenn McGrath
6 * Written by Glenn McGrath <bug1@optushome.com.au> 1 June 2000
8 * Based in part on BusyBox tar, Debian dpkg-deb and GNU ar.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 * There is no signle standard to adhere to so ar may not portable
25 * between different systems
26 * http://www.unix-systems.org/single_unix_specification_v2/xcu/ar.html
28 #include <sys/types.h>
38 #include "unarchive.h"
41 static void header_verbose_list_ar(const file_header_t *file_header)
43 const char *mode = mode_string(file_header->mode);
46 mtime = ctime(&file_header->mtime);
48 memmove(&mtime[17], &mtime[20], 4);
50 printf("%s %d/%d%7d %s %s\n", &mode[1], file_header->uid, file_header->gid, (int) file_header->size, &mtime[4], file_header->name);
53 #if defined CONFIG_TAR | defined CONFIG_DPKG_DEB | defined CONFIG_CPIO
54 /* This is simpler than data_extract_all */
55 static void data_extract_regular_file(archive_handle_t *archive_handle)
57 file_header_t *file_header;
60 file_header = archive_handle->file_header;
61 dst_fd = xopen(file_header->name, O_WRONLY | O_CREAT);
62 copy_file_chunk_fd(archive_handle->src_fd, dst_fd, file_header->size);
65 chmod(file_header->name, file_header->mode);
66 chown(file_header->name, file_header->uid, file_header->gid);
68 if (archive_handle->flags & ARCHIVE_PRESERVE_DATE) {
70 t.actime = t.modtime = file_header->mtime;
71 utime(file_header->name, &t);
78 extern int ar_main(int argc, char **argv)
80 archive_handle_t *archive_handle;
83 #ifndef CONFIG_DPKG_DEB
86 #if defined CONFIG_TAR | defined CONFIG_DPKG_DEB | defined CONFIG_CPIO
87 archive_handle = init_handle();
89 archive_handle = xcalloc(1, sizeof(archive_handle_t));
90 archive_handle->filter = filter_accept_all;
91 archive_handle->action_data = data_skip;
92 archive_handle->action_header = header_skip;
93 archive_handle->file_header =xmalloc(sizeof(file_header_t));
96 while ((opt = getopt(argc, argv, "covtpxX")) != -1) {
99 archive_handle->action_data = data_extract_to_stdout;
101 case 't': /* list contents */
102 archive_handle->action_header = header_list;
105 archive_handle->action_header = header_verbose_list_ar;
106 case 'x': /* extract */
107 #if defined CONFIG_TAR | defined CONFIG_DPKG_DEB | defined CONFIG_CPIO
108 archive_handle->action_data = data_extract_all;
110 archive_handle->action_data = data_extract_regular_file;
114 case 'o': /* preserve original dates */
115 archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
117 case 'v': /* verbose */
118 archive_handle->action_header = header_verbose_list_ar;
125 /* check the src filename was specified */
126 if (optind == argc) {
130 archive_handle->src_fd = xopen(argv[optind++], O_RDONLY);
132 /* TODO: This is the same as in tar, seperate function ? */
133 while (optind < argc) {
134 archive_handle->filter = filter_accept_list;
135 archive_handle->accept = add_to_list(archive_handle->accept, argv[optind]);
139 #if defined CONFIG_DPKG_DEB
140 unpack_ar_archive(archive_handle);
142 xread_all(archive_handle->src_fd, magic, 7);
143 if (strncmp(magic, "!<arch>", 7) != 0) {
144 error_msg_and_die("Invalid ar magic");
146 archive_handle->offset += 7;
148 while (get_header_ar(archive_handle) == EXIT_SUCCESS);