busybox/archival/ar.c

/* vi: set sw=4 ts=4: */
/*
 * Mini ar implementation for busybox
 *
 * Copyright (C) 2000 by Glenn McGrath
 * Written by Glenn McGrath <bug1@iinet.net.au> 1 June 2000
 *
 * Based in part on BusyBox tar, Debian dpkg-deb and GNU ar.
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 *
 * There is no single standard to adhere to so ar may not portable
 * between different systems
 * http://www.unix-systems.org/single_unix_specification_v2/xcu/ar.html
 */

#include "busybox.h"
#include "unarchive.h"

static void header_verbose_list_ar(const file_header_t *file_header)
{
	const char *mode = bb_mode_string(file_header->mode);
	char *mtime;

	mtime = ctime(&file_header->mtime);
	mtime[16] = ' ';
	memmove(&mtime[17], &mtime[20], 4);
	mtime[21] = '\0';
	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);
}

#define AR_CTX_PRINT		0x01
#define AR_CTX_LIST		0x02
#define AR_CTX_EXTRACT		0x04
#define AR_OPT_PRESERVE_DATE	0x08
#define AR_OPT_VERBOSE		0x10
#define AR_OPT_CREATE		0x20
#define AR_OPT_INSERT		0x40

int ar_main(int argc, char **argv)
{
	archive_handle_t *archive_handle;
	unsigned opt;
	static const char msg_unsupported_err[] =
			"Archive %s not supported.  Install binutils 'ar'.";
	char magic[8];

	archive_handle = init_handle();

	/* Prepend '-' to the first argument if required */
	opt_complementary = "--:p:t:x:-1:?:p--tx:t--px:x--pt";
	opt = getopt32(argc, argv, "ptxovcr");

	if (opt & AR_CTX_PRINT) {
		archive_handle->action_data = data_extract_to_stdout;
	}
	if (opt & AR_CTX_LIST) {
		archive_handle->action_header = header_list;
	}
	if (opt & AR_CTX_EXTRACT) {
		archive_handle->action_data = data_extract_all;
	}
	if (opt & AR_OPT_PRESERVE_DATE) {
		archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
	}
	if (opt & AR_OPT_VERBOSE) {
		archive_handle->action_header = header_verbose_list_ar;
	}
	if (opt & AR_OPT_CREATE) {
		bb_error_msg_and_die(msg_unsupported_err, "creation");
	}
	if (opt & AR_OPT_INSERT) {
		bb_error_msg_and_die(msg_unsupported_err, "insertion");
	}

	archive_handle->src_fd = xopen(argv[optind++], O_RDONLY);

	while (optind < argc) {
		archive_handle->filter = filter_accept_list;
		llist_add_to(&(archive_handle->accept), argv[optind++]);
	}

	xread(archive_handle->src_fd, magic, 7);
	if (strncmp(magic, "!<arch>", 7) != 0) {
		bb_error_msg_and_die("invalid ar magic");
	}
	archive_handle->offset += 7;

	while (get_header_ar(archive_handle) == EXIT_SUCCESS) /* repeat */;

	return EXIT_SUCCESS;
}
1	/* vi: set sw=4 ts=4: */
2	/*
3	* Mini ar implementation for busybox
4	*
5	* Copyright (C) 2000 by Glenn McGrath
6	* Written by Glenn McGrath <bug1@iinet.net.au> 1 June 2000
7	*
8	* Based in part on BusyBox tar, Debian dpkg-deb and GNU ar.
9	*
10	* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
11	*
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
15	*/
16
17	#include "busybox.h"
18	#include "unarchive.h"
19
20	static void header_verbose_list_ar(const file_header_t *file_header)
21	{
22	const char *mode = bb_mode_string(file_header->mode);
23	char *mtime;
24
25	mtime = ctime(&file_header->mtime);
26	mtime[16] = ' ';
27	memmove(&mtime[17], &mtime[20], 4);
28	mtime[21] = '\0';
29	printf("%s %d/%d%7d %s %s\n", &mode[1], file_header->uid, file_header->gid,
30	(int) file_header->size, &mtime[4], file_header->name);
31	}
32
33	#define AR_CTX_PRINT 0x01
34	#define AR_CTX_LIST 0x02
35	#define AR_CTX_EXTRACT 0x04
36	#define AR_OPT_PRESERVE_DATE 0x08
37	#define AR_OPT_VERBOSE 0x10
38	#define AR_OPT_CREATE 0x20
39	#define AR_OPT_INSERT 0x40
40
41	int ar_main(int argc, char **argv)
42	{
43	archive_handle_t *archive_handle;
44	unsigned opt;
45	static const char msg_unsupported_err[] =
46	"Archive %s not supported. Install binutils 'ar'.";
47	char magic[8];
48
49	archive_handle = init_handle();
50
51	/* Prepend '-' to the first argument if required */
52	opt_complementary = "--:p:t:x:-1:?:p--tx:t--px:x--pt";
53	opt = getopt32(argc, argv, "ptxovcr");
54
55	if (opt & AR_CTX_PRINT) {
56	archive_handle->action_data = data_extract_to_stdout;
57	}
58	if (opt & AR_CTX_LIST) {
59	archive_handle->action_header = header_list;
60	}
61	if (opt & AR_CTX_EXTRACT) {
62	archive_handle->action_data = data_extract_all;
63	}
64	if (opt & AR_OPT_PRESERVE_DATE) {
65	archive_handle->flags \|= ARCHIVE_PRESERVE_DATE;
66	}
67	if (opt & AR_OPT_VERBOSE) {
68	archive_handle->action_header = header_verbose_list_ar;
69	}
70	if (opt & AR_OPT_CREATE) {
71	bb_error_msg_and_die(msg_unsupported_err, "creation");
72	}
73	if (opt & AR_OPT_INSERT) {
74	bb_error_msg_and_die(msg_unsupported_err, "insertion");
75	}
76
77	archive_handle->src_fd = xopen(argv[optind++], O_RDONLY);
78
79	while (optind < argc) {
80	archive_handle->filter = filter_accept_list;
81	llist_add_to(&(archive_handle->accept), argv[optind++]);
82	}
83
84	xread(archive_handle->src_fd, magic, 7);
85	if (strncmp(magic, "!<arch>", 7) != 0) {
86	bb_error_msg_and_die("invalid ar magic");
87	}
88	archive_handle->offset += 7;
89
90	while (get_header_ar(archive_handle) == EXIT_SUCCESS) /* repeat */;
91
92	return EXIT_SUCCESS;
93	}