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@iinet.net.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 single 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
37 #include "unarchive.h"
40 static void header_verbose_list_ar(const file_header_t *file_header)
42 const char *mode = bb_mode_string(file_header->mode);
45 mtime = ctime(&file_header->mtime);
47 memmove(&mtime[17], &mtime[20], 4);
49 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);
52 #define AR_CTX_PRINT 0x01
53 #define AR_CTX_LIST 0x02
54 #define AR_CTX_EXTRACT 0x04
55 #define AR_OPT_PRESERVE_DATE 0x08
56 #define AR_OPT_VERBOSE 0x10
57 #define AR_OPT_CREATE 0x20
58 #define AR_OPT_INSERT 0x40
60 int ar_main(int argc, char **argv)
62 archive_handle_t *archive_handle;
64 static const char msg_unsupported_err[] =
65 "Archive %s not supported. Install binutils 'ar'.";
68 archive_handle = init_handle();
70 /* Prepend '-' to the first argument if required */
71 bb_opt_complementally = "--:p:t:x:-1:?:p--tx:t--px:x--pt";
72 opt = bb_getopt_ulflags(argc, argv, "ptxovcr");
74 if (opt & AR_CTX_PRINT) {
75 archive_handle->action_data = data_extract_to_stdout;
77 if (opt & AR_CTX_LIST) {
78 archive_handle->action_header = header_list;
80 if (opt & AR_CTX_EXTRACT) {
81 archive_handle->action_data = data_extract_all;
83 if (opt & AR_OPT_PRESERVE_DATE) {
84 archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
86 if (opt & AR_OPT_VERBOSE) {
87 archive_handle->action_header = header_verbose_list_ar;
89 if (opt & AR_OPT_CREATE) {
90 bb_error_msg_and_die(msg_unsupported_err, "creation");
92 if (opt & AR_OPT_INSERT) {
93 bb_error_msg_and_die(msg_unsupported_err, "insertion");
96 archive_handle->src_fd = bb_xopen(argv[optind++], O_RDONLY);
98 while (optind < argc) {
99 archive_handle->filter = filter_accept_list;
100 llist_add_to(&(archive_handle->accept), argv[optind++]);
103 archive_xread_all(archive_handle, magic, 7);
104 if (strncmp(magic, "!<arch>", 7) != 0) {
105 bb_error_msg_and_die("Invalid ar magic");
107 archive_handle->offset += 7;
109 while (get_header_ar(archive_handle) == EXIT_SUCCESS);