147 lines
4.4 KiB
C
147 lines
4.4 KiB
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 source tree.
|
|
*/
|
|
|
|
//config:config DPKG_DEB
|
|
//config: bool "dpkg_deb"
|
|
//config: default n
|
|
//config: select FEATURE_SEAMLESS_GZ
|
|
//config: help
|
|
//config: dpkg-deb unpacks and provides information about Debian archives.
|
|
//config:
|
|
//config: This implementation of dpkg-deb cannot pack archives.
|
|
//config:
|
|
//config: Unless you have a specific application which requires dpkg-deb,
|
|
//config: say N here.
|
|
//config:
|
|
//config:config FEATURE_DPKG_DEB_EXTRACT_ONLY
|
|
//config: bool "Extract only (-x)"
|
|
//config: default n
|
|
//config: depends on DPKG_DEB
|
|
//config: help
|
|
//config: This reduces dpkg-deb to the equivalent of
|
|
//config: "ar -p <deb> data.tar.gz | tar -zx". However it saves space as none
|
|
//config: of the extra dpkg-deb, ar or tar options are needed, they are linked
|
|
//config: to internally.
|
|
|
|
//applet:IF_DPKG_DEB(APPLET_ODDNAME(dpkg-deb, dpkg_deb, BB_DIR_USR_BIN, BB_SUID_DROP, dpkg_deb))
|
|
//kbuild:lib-$(CONFIG_DPKG_DEB) += dpkg_deb.o
|
|
|
|
//usage:#define dpkg_deb_trivial_usage
|
|
//usage: "[-cefxX] FILE [argument"
|
|
//usage:#define dpkg_deb_full_usage "\n\n"
|
|
//usage: "Perform actions on Debian packages (.debs)\n"
|
|
//usage: "\n -c List contents of filesystem tree"
|
|
//usage: "\n -e Extract control files to [argument] directory"
|
|
//usage: "\n -f Display control field name starting with [argument]"
|
|
//usage: "\n -x Extract packages filesystem tree to directory"
|
|
//usage: "\n -X Verbose extract"
|
|
//usage:
|
|
//usage:#define dpkg_deb_example_usage
|
|
//usage: "$ dpkg-deb -X ./busybox_0.48-1_i386.deb /tmp\n"
|
|
|
|
#include "libbb.h"
|
|
#include "bb_archive.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->dpkg__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
|
|
#if ENABLE_FEATURE_SEAMLESS_LZMA
|
|
llist_add_to(&ar_archive->accept, (char*)"data.tar.lzma");
|
|
llist_add_to(&control_tar_llist, (char*)"control.tar.lzma");
|
|
#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;
|
|
}
|