busybox/archival/dpkg_deb.c

/* vi: set sw=4 ts=4: */
/*
 * dpkg-deb packs, unpacks and provides information about Debian archives.
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */
#include "libbb.h"
#include "unarchive.h"

#define DPKG_DEB_OPT_CONTENTS	1
#define DPKG_DEB_OPT_CONTROL	2
#define DPKG_DEB_OPT_FIELD	4
#define DPKG_DEB_OPT_EXTRACT	8
#define DPKG_DEB_OPT_EXTRACT_VERBOSE	16

int dpkg_deb_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int dpkg_deb_main(int argc, char **argv)
{
	archive_handle_t *ar_archive;
	archive_handle_t *tar_archive;
	llist_t *control_tar_llist = NULL;
	unsigned opt;
	const char *extract_dir;
	int need_args;

	/* Setup the tar archive handle */
	tar_archive = init_handle();

	/* Setup an ar archive handle that refers to the gzip sub archive */
	ar_archive = init_handle();
	ar_archive->sub_archive = tar_archive;
	ar_archive->filter = filter_accept_list_reassign;

#if ENABLE_FEATURE_SEAMLESS_GZ
	llist_add_to(&(ar_archive->accept), (char*)"data.tar.gz");
	llist_add_to(&control_tar_llist, (char*)"control.tar.gz");
#endif

#if ENABLE_FEATURE_SEAMLESS_BZ2
	llist_add_to(&(ar_archive->accept), (char*)"data.tar.bz2");
	llist_add_to(&control_tar_llist, (char*)"control.tar.bz2");
#endif

	opt_complementary = "c--efXx:e--cfXx:f--ceXx:X--cefx:x--cefX";
	opt = getopt32(argv, "cefXx");
	argv += optind;
	argc -= optind;

	if (opt & DPKG_DEB_OPT_CONTENTS) {
		tar_archive->action_header = header_verbose_list;
	}
	extract_dir = NULL;
	need_args = 1;
	if (opt & DPKG_DEB_OPT_CONTROL) {
		ar_archive->accept = control_tar_llist;
		tar_archive->action_data = data_extract_all;
		if (1 == argc) {
			extract_dir = "./DEBIAN";
		} else {
			need_args++;
		}
	}
	if (opt & DPKG_DEB_OPT_FIELD) {
		/* Print the entire control file
		 * it should accept a second argument which specifies a
		 * specific field to print */
		ar_archive->accept = control_tar_llist;
		llist_add_to(&(tar_archive->accept), (char*)"./control");
		tar_archive->filter = filter_accept_list;
		tar_archive->action_data = data_extract_to_stdout;
	}
	if (opt & DPKG_DEB_OPT_EXTRACT) {
		tar_archive->action_header = header_list;
	}
	if (opt & (DPKG_DEB_OPT_EXTRACT_VERBOSE | DPKG_DEB_OPT_EXTRACT)) {
		tar_archive->action_data = data_extract_all;
		need_args = 2;
	}

	if (need_args != argc) {
		bb_show_usage();
	}

	tar_archive->src_fd = ar_archive->src_fd = xopen(argv[0], O_RDONLY);

	/* Work out where to extract the files */
	/* 2nd argument is a dir name */
	if (argv[1]) {
		extract_dir = argv[1];
	}
	if (extract_dir) {
		mkdir(extract_dir, 0777); /* bb_make_directory(extract_dir, 0777, 0) */
		xchdir(extract_dir);
	}

	/* Do it */
	unpack_ar_archive(ar_archive);

	/* Cleanup */
	if (ENABLE_FEATURE_CLEAN_UP)
		close(ar_archive->src_fd);

	return EXIT_SUCCESS;
}
1	niro	532	/* vi: set sw=4 ts=4: */
2			/*
3			* dpkg-deb packs, unpacks and provides information about Debian archives.
4			*
5			* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
6			*/
7	niro	816	#include "libbb.h"
8	niro	532	#include "unarchive.h"
9
10			#define DPKG_DEB_OPT_CONTENTS 1
11			#define DPKG_DEB_OPT_CONTROL 2
12			#define DPKG_DEB_OPT_FIELD 4
13			#define DPKG_DEB_OPT_EXTRACT 8
14			#define DPKG_DEB_OPT_EXTRACT_VERBOSE 16
15
16	niro	816	int dpkg_deb_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
17	niro	532	int dpkg_deb_main(int argc, char **argv)
18			{
19			archive_handle_t *ar_archive;
20			archive_handle_t *tar_archive;
21			llist_t *control_tar_llist = NULL;
22			unsigned opt;
23	niro	816	const char *extract_dir;
24			int need_args;
25	niro	532
26			/* Setup the tar archive handle */
27			tar_archive = init_handle();
28
29			/* Setup an ar archive handle that refers to the gzip sub archive */
30			ar_archive = init_handle();
31			ar_archive->sub_archive = tar_archive;
32			ar_archive->filter = filter_accept_list_reassign;
33
34	niro	816	#if ENABLE_FEATURE_SEAMLESS_GZ
35			llist_add_to(&(ar_archive->accept), (char*)"data.tar.gz");
36			llist_add_to(&control_tar_llist, (char*)"control.tar.gz");
37	niro	532	#endif
38
39	niro	816	#if ENABLE_FEATURE_SEAMLESS_BZ2
40			llist_add_to(&(ar_archive->accept), (char*)"data.tar.bz2");
41			llist_add_to(&control_tar_llist, (char*)"control.tar.bz2");
42	niro	532	#endif
43
44	niro	816	opt_complementary = "c--efXx:e--cfXx:f--ceXx:X--cefx:x--cefX";
45			opt = getopt32(argv, "cefXx");
46			argv += optind;
47			argc -= optind;
48	niro	532
49			if (opt & DPKG_DEB_OPT_CONTENTS) {
50			tar_archive->action_header = header_verbose_list;
51			}
52	niro	816	extract_dir = NULL;
53			need_args = 1;
54	niro	532	if (opt & DPKG_DEB_OPT_CONTROL) {
55			ar_archive->accept = control_tar_llist;
56			tar_archive->action_data = data_extract_all;
57	niro	816	if (1 == argc) {
58	niro	532	extract_dir = "./DEBIAN";
59			} else {
60	niro	816	need_args++;
61	niro	532	}
62			}
63			if (opt & DPKG_DEB_OPT_FIELD) {
64			/* Print the entire control file
65			* it should accept a second argument which specifies a
66			* specific field to print */
67			ar_archive->accept = control_tar_llist;
68	niro	816	llist_add_to(&(tar_archive->accept), (char*)"./control");
69	niro	532	tar_archive->filter = filter_accept_list;
70			tar_archive->action_data = data_extract_to_stdout;
71			}
72			if (opt & DPKG_DEB_OPT_EXTRACT) {
73			tar_archive->action_header = header_list;
74			}
75			if (opt & (DPKG_DEB_OPT_EXTRACT_VERBOSE \| DPKG_DEB_OPT_EXTRACT)) {
76			tar_archive->action_data = data_extract_all;
77	niro	816	need_args = 2;
78	niro	532	}
79
80	niro	816	if (need_args != argc) {
81	niro	532	bb_show_usage();
82			}
83
84	niro	816	tar_archive->src_fd = ar_archive->src_fd = xopen(argv[0], O_RDONLY);
85	niro	532
86	niro	816	/* Work out where to extract the files */
87	niro	532	/* 2nd argument is a dir name */
88	niro	816	if (argv[1]) {
89			extract_dir = argv[1];
90	niro	532	}
91			if (extract_dir) {
92			mkdir(extract_dir, 0777); /* bb_make_directory(extract_dir, 0777, 0) */
93			xchdir(extract_dir);
94			}
95	niro	816
96			/* Do it */
97	niro	532	unpack_ar_archive(ar_archive);
98
99			/* Cleanup */
100	niro	816	if (ENABLE_FEATURE_CLEAN_UP)
101			close(ar_archive->src_fd);
102	niro	532
103			return EXIT_SUCCESS;
104			}