1 /* vi: set sw=4 ts=4: */
3 * dpkg-deb packs, unpacks and provides information about Debian archives.
5 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
7 //config:config DPKG_DEB
8 //config: bool "dpkg-deb (30 kb)"
10 //config: select FEATURE_SEAMLESS_GZ
12 //config: dpkg-deb unpacks and provides information about Debian archives.
14 //config: This implementation of dpkg-deb cannot pack archives.
16 //config: Unless you have a specific application which requires dpkg-deb,
19 //applet:IF_DPKG_DEB(APPLET_ODDNAME(dpkg-deb, dpkg_deb, BB_DIR_USR_BIN, BB_SUID_DROP, dpkg_deb))
21 //kbuild:lib-$(CONFIG_DPKG_DEB) += dpkg_deb.o
23 //usage:#define dpkg_deb_trivial_usage
24 //usage: "[-cefxX] FILE [DIR]"
25 //usage:#define dpkg_deb_full_usage "\n\n"
26 //usage: "Perform actions on Debian packages (.deb)\n"
27 //usage: "\n -c List files"
28 //usage: "\n -f Print control fields"
29 //usage: "\n -e Extract control files to DIR (default: ./DEBIAN)"
30 //usage: "\n -x Extract files to DIR (no default)"
31 //usage: "\n -X Verbose -x"
33 //usage:#define dpkg_deb_example_usage
34 //usage: "$ dpkg-deb -X ./busybox_0.48-1_i386.deb /tmp\n"
37 #include "bb_archive.h"
39 #define DPKG_DEB_OPT_CONTENTS 1
40 #define DPKG_DEB_OPT_CONTROL 2
41 #define DPKG_DEB_OPT_FIELD 4
42 #define DPKG_DEB_OPT_EXTRACT_VERBOSE 8
43 #define DPKG_DEB_OPT_EXTRACT 16
45 int dpkg_deb_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
46 int dpkg_deb_main(int argc UNUSED_PARAM, char **argv)
48 archive_handle_t *ar_archive;
49 archive_handle_t *tar_archive;
50 llist_t *control_tar_llist = NULL;
52 const char *extract_dir;
54 /* Setup the tar archive handle */
55 tar_archive = init_handle();
57 /* Setup an ar archive handle that refers to the gzip sub archive */
58 ar_archive = init_handle();
59 ar_archive->dpkg__sub_archive = tar_archive;
60 ar_archive->filter = filter_accept_list_reassign;
62 llist_add_to(&ar_archive->accept, (char*)"data.tar");
63 llist_add_to(&control_tar_llist, (char*)"control.tar");
64 #if ENABLE_FEATURE_SEAMLESS_GZ
65 llist_add_to(&ar_archive->accept, (char*)"data.tar.gz");
66 llist_add_to(&control_tar_llist, (char*)"control.tar.gz");
68 #if ENABLE_FEATURE_SEAMLESS_BZ2
69 llist_add_to(&ar_archive->accept, (char*)"data.tar.bz2");
70 llist_add_to(&control_tar_llist, (char*)"control.tar.bz2");
72 #if ENABLE_FEATURE_SEAMLESS_LZMA
73 llist_add_to(&ar_archive->accept, (char*)"data.tar.lzma");
74 llist_add_to(&control_tar_llist, (char*)"control.tar.lzma");
76 #if ENABLE_FEATURE_SEAMLESS_XZ
77 llist_add_to(&ar_archive->accept, (char*)"data.tar.xz");
78 llist_add_to(&control_tar_llist, (char*)"control.tar.xz");
81 /* Must have 1 or 2 args */
82 opt = getopt32(argv, "^" "cefXx"
83 "\0" "-1:?2:c--efXx:e--cfXx:f--ceXx:X--cefx:x--cefX"
88 extract_dir = argv[1];
89 if (opt & DPKG_DEB_OPT_CONTENTS) { // -c
90 tar_archive->action_header = header_verbose_list;
94 if (opt & DPKG_DEB_OPT_FIELD) { // -f
95 /* Print the entire control file */
96 //TODO: standard tool accepts an optional list of fields to print
97 ar_archive->accept = control_tar_llist;
98 llist_add_to(&(tar_archive->accept), (char*)"./control");
99 tar_archive->filter = filter_accept_list;
100 tar_archive->action_data = data_extract_to_stdout;
104 if (opt & DPKG_DEB_OPT_CONTROL) { // -e
105 ar_archive->accept = control_tar_llist;
106 tar_archive->action_data = data_extract_all;
108 extract_dir = "./DEBIAN";
110 if (opt & (DPKG_DEB_OPT_EXTRACT_VERBOSE | DPKG_DEB_OPT_EXTRACT)) { // -Xx
111 if (opt & DPKG_DEB_OPT_EXTRACT_VERBOSE)
112 tar_archive->action_header = header_list;
113 tar_archive->action_data = data_extract_all;
118 /* Standard tool supports "-" */
119 tar_archive->src_fd = ar_archive->src_fd = xopen_stdin(argv[0]);
122 mkdir(extract_dir, 0777); /* bb_make_directory(extract_dir, 0777, 0) */
127 unpack_ar_archive(ar_archive);
130 if (ENABLE_FEATURE_CLEAN_UP)
131 close(ar_archive->src_fd);