source: branches/3.2/mindi-busybox/archival/dpkg_deb.c @ 3232

Last change on this file since 3232 was 3232, checked in by bruno, 5 years ago
  • Update mindi-busybox to 1.21.1
File size: 3.5 KB
Line 
1/* 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 source tree.
6 */
7
8//usage:#define dpkg_deb_trivial_usage
9//usage:       "[-cefxX] FILE [argument"
10//usage:#define dpkg_deb_full_usage "\n\n"
11//usage:       "Perform actions on Debian packages (.debs)\n"
12//usage:     "\n    -c  List contents of filesystem tree"
13//usage:     "\n    -e  Extract control files to [argument] directory"
14//usage:     "\n    -f  Display control field name starting with [argument]"
15//usage:     "\n    -x  Extract packages filesystem tree to directory"
16//usage:     "\n    -X  Verbose extract"
17//usage:
18//usage:#define dpkg_deb_example_usage
19//usage:       "$ dpkg-deb -X ./busybox_0.48-1_i386.deb /tmp\n"
20
21#include "libbb.h"
22#include "bb_archive.h"
23
24#define DPKG_DEB_OPT_CONTENTS         1
25#define DPKG_DEB_OPT_CONTROL          2
26#define DPKG_DEB_OPT_FIELD            4
27#define DPKG_DEB_OPT_EXTRACT          8
28#define DPKG_DEB_OPT_EXTRACT_VERBOSE 16
29
30int dpkg_deb_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
31int dpkg_deb_main(int argc, char **argv)
32{
33    archive_handle_t *ar_archive;
34    archive_handle_t *tar_archive;
35    llist_t *control_tar_llist = NULL;
36    unsigned opt;
37    const char *extract_dir;
38    int need_args;
39
40    /* Setup the tar archive handle */
41    tar_archive = init_handle();
42
43    /* Setup an ar archive handle that refers to the gzip sub archive */
44    ar_archive = init_handle();
45    ar_archive->dpkg__sub_archive = tar_archive;
46    ar_archive->filter = filter_accept_list_reassign;
47
48#if ENABLE_FEATURE_SEAMLESS_GZ
49    llist_add_to(&ar_archive->accept, (char*)"data.tar.gz");
50    llist_add_to(&control_tar_llist, (char*)"control.tar.gz");
51#endif
52#if ENABLE_FEATURE_SEAMLESS_BZ2
53    llist_add_to(&ar_archive->accept, (char*)"data.tar.bz2");
54    llist_add_to(&control_tar_llist, (char*)"control.tar.bz2");
55#endif
56#if ENABLE_FEATURE_SEAMLESS_LZMA
57    llist_add_to(&ar_archive->accept, (char*)"data.tar.lzma");
58    llist_add_to(&control_tar_llist, (char*)"control.tar.lzma");
59#endif
60
61    opt_complementary = "c--efXx:e--cfXx:f--ceXx:X--cefx:x--cefX";
62    opt = getopt32(argv, "cefXx");
63    argv += optind;
64    argc -= optind;
65
66    if (opt & DPKG_DEB_OPT_CONTENTS) {
67        tar_archive->action_header = header_verbose_list;
68    }
69    extract_dir = NULL;
70    need_args = 1;
71    if (opt & DPKG_DEB_OPT_CONTROL) {
72        ar_archive->accept = control_tar_llist;
73        tar_archive->action_data = data_extract_all;
74        if (1 == argc) {
75            extract_dir = "./DEBIAN";
76        } else {
77            need_args++;
78        }
79    }
80    if (opt & DPKG_DEB_OPT_FIELD) {
81        /* Print the entire control file
82         * it should accept a second argument which specifies a
83         * specific field to print */
84        ar_archive->accept = control_tar_llist;
85        llist_add_to(&(tar_archive->accept), (char*)"./control");
86        tar_archive->filter = filter_accept_list;
87        tar_archive->action_data = data_extract_to_stdout;
88    }
89    if (opt & DPKG_DEB_OPT_EXTRACT) {
90        tar_archive->action_header = header_list;
91    }
92    if (opt & (DPKG_DEB_OPT_EXTRACT_VERBOSE | DPKG_DEB_OPT_EXTRACT)) {
93        tar_archive->action_data = data_extract_all;
94        need_args = 2;
95    }
96
97    if (need_args != argc) {
98        bb_show_usage();
99    }
100
101    tar_archive->src_fd = ar_archive->src_fd = xopen(argv[0], O_RDONLY);
102
103    /* Work out where to extract the files */
104    /* 2nd argument is a dir name */
105    if (argv[1]) {
106        extract_dir = argv[1];
107    }
108    if (extract_dir) {
109        mkdir(extract_dir, 0777); /* bb_make_directory(extract_dir, 0777, 0) */
110        xchdir(extract_dir);
111    }
112
113    /* Do it */
114    unpack_ar_archive(ar_archive);
115
116    /* Cleanup */
117    if (ENABLE_FEATURE_CLEAN_UP)
118        close(ar_archive->src_fd);
119
120    return EXIT_SUCCESS;
121}
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