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 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
12 * There is no single standard to adhere to so ar may not portable
13 * between different systems
14 * http://www.unix-systems.org/single_unix_specification_v2/xcu/ar.html
18 #include "unarchive.h"
20 static void header_verbose_list_ar(const file_header_t *file_header)
22 const char *mode = bb_mode_string(file_header->mode);
25 mtime = ctime(&file_header->mtime);
27 memmove(&mtime[17], &mtime[20], 4);
29 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);
32 #define AR_CTX_PRINT 0x01
33 #define AR_CTX_LIST 0x02
34 #define AR_CTX_EXTRACT 0x04
35 #define AR_OPT_PRESERVE_DATE 0x08
36 #define AR_OPT_VERBOSE 0x10
37 #define AR_OPT_CREATE 0x20
38 #define AR_OPT_INSERT 0x40
40 int ar_main(int argc, char **argv)
42 archive_handle_t *archive_handle;
44 static const char msg_unsupported_err[] =
45 "Archive %s not supported. Install binutils 'ar'.";
48 archive_handle = init_handle();
50 /* Prepend '-' to the first argument if required */
51 bb_opt_complementally = "--:p:t:x:-1:?:p--tx:t--px:x--pt";
52 opt = bb_getopt_ulflags(argc, argv, "ptxovcr");
54 if (opt & AR_CTX_PRINT) {
55 archive_handle->action_data = data_extract_to_stdout;
57 if (opt & AR_CTX_LIST) {
58 archive_handle->action_header = header_list;
60 if (opt & AR_CTX_EXTRACT) {
61 archive_handle->action_data = data_extract_all;
63 if (opt & AR_OPT_PRESERVE_DATE) {
64 archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
66 if (opt & AR_OPT_VERBOSE) {
67 archive_handle->action_header = header_verbose_list_ar;
69 if (opt & AR_OPT_CREATE) {
70 bb_error_msg_and_die(msg_unsupported_err, "creation");
72 if (opt & AR_OPT_INSERT) {
73 bb_error_msg_and_die(msg_unsupported_err, "insertion");
76 archive_handle->src_fd = xopen(argv[optind++], O_RDONLY);
78 while (optind < argc) {
79 archive_handle->filter = filter_accept_list;
80 llist_add_to(&(archive_handle->accept), argv[optind++]);
83 xread(archive_handle->src_fd, magic, 7);
84 if (strncmp(magic, "!<arch>", 7) != 0) {
85 bb_error_msg_and_die("Invalid ar magic");
87 archive_handle->offset += 7;
89 while (get_header_ar(archive_handle) == EXIT_SUCCESS);