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/* 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 y
//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.
//applet:IF_DPKG_DEB(APPLET_ODDNAME(dpkg-deb, dpkg_deb, BB_DIR_USR_BIN, BB_SUID_DROP, dpkg_deb))
//kbuild:lib-$(CONFIG_DPKG_DEB) += dpkg_deb.o
//usage:#define dpkg_deb_trivial_usage
//usage: "[-cefxX] FILE [DIR]"
//usage:#define dpkg_deb_full_usage "\n\n"
//usage: "Perform actions on Debian packages (.deb)\n"
//usage: "\n -c List files"
//usage: "\n -f Print control fields"
//usage: "\n -e Extract control files to DIR (default: ./DEBIAN)"
//usage: "\n -x Extract files to DIR (no default)"
//usage: "\n -X Verbose -x"
//usage:
//usage:#define dpkg_deb_example_usage
//usage: "$ 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_VERBOSE 8
#define DPKG_DEB_OPT_EXTRACT 16
int dpkg_deb_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int dpkg_deb_main(int argc UNUSED_PARAM, char **argv)
{
archive_handle_t *ar_archive;
archive_handle_t *tar_archive;
llist_t *control_tar_llist = NULL;
unsigned opt;
const char *extract_dir;
/* 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;
llist_add_to(&ar_archive->accept, (char*)"data.tar");
llist_add_to(&control_tar_llist, (char*)"control.tar");
#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
#if ENABLE_FEATURE_SEAMLESS_XZ
llist_add_to(&ar_archive->accept, (char*)"data.tar.xz");
llist_add_to(&control_tar_llist, (char*)"control.tar.xz");
#endif
/* Must have 1 or 2 args */
opt_complementary = "-1:?2:c--efXx:e--cfXx:f--ceXx:X--cefx:x--cefX";
opt = getopt32(argv, "cefXx");
argv += optind;
//argc -= optind;
extract_dir = argv[1];
if (opt & DPKG_DEB_OPT_CONTENTS) { // -c
tar_archive->action_header = header_verbose_list;
if (extract_dir)
bb_show_usage();
}
if (opt & DPKG_DEB_OPT_FIELD) { // -f
/* Print the entire control file */
//TODO: standard tool accepts an optional list of fields 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 (extract_dir)
bb_show_usage();
}
if (opt & DPKG_DEB_OPT_CONTROL) { // -e
ar_archive->accept = control_tar_llist;
tar_archive->action_data = data_extract_all;
if (!extract_dir)
extract_dir = "./DEBIAN";
}
if (opt & (DPKG_DEB_OPT_EXTRACT_VERBOSE | DPKG_DEB_OPT_EXTRACT)) { // -Xx
if (opt & DPKG_DEB_OPT_EXTRACT_VERBOSE)
tar_archive->action_header = header_list;
tar_archive->action_data = data_extract_all;
if (!extract_dir)
bb_show_usage();
}
/* Standard tool supports "-" */
tar_archive->src_fd = ar_archive->src_fd = xopen_stdin(argv[0]);
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;
}
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