125 lines
3.6 KiB
C
125 lines
3.6 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* dpkg-deb packs, unpacks and provides information about Debian archives.
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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//applet:IF_DPKG_DEB(APPLET_ODDNAME(dpkg-deb, dpkg_deb, BB_DIR_USR_BIN, BB_SUID_DROP, dpkg_deb))
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//kbuild:lib-$(CONFIG_DPKG_DEB) += dpkg_deb.o
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//usage:#define dpkg_deb_trivial_usage
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//usage: "[-cefxX] FILE [argument"
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//usage:#define dpkg_deb_full_usage "\n\n"
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//usage: "Perform actions on Debian packages (.debs)\n"
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//usage: "\n -c List contents of filesystem tree"
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//usage: "\n -e Extract control files to [argument] directory"
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//usage: "\n -f Display control field name starting with [argument]"
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//usage: "\n -x Extract packages filesystem tree to directory"
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//usage: "\n -X Verbose extract"
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//usage:
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//usage:#define dpkg_deb_example_usage
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//usage: "$ dpkg-deb -X ./busybox_0.48-1_i386.deb /tmp\n"
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#include "libbb.h"
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#include "bb_archive.h"
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#define DPKG_DEB_OPT_CONTENTS 1
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#define DPKG_DEB_OPT_CONTROL 2
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#define DPKG_DEB_OPT_FIELD 4
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#define DPKG_DEB_OPT_EXTRACT 8
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#define DPKG_DEB_OPT_EXTRACT_VERBOSE 16
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int dpkg_deb_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int dpkg_deb_main(int argc, char **argv)
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{
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archive_handle_t *ar_archive;
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archive_handle_t *tar_archive;
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llist_t *control_tar_llist = NULL;
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unsigned opt;
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const char *extract_dir;
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int need_args;
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/* Setup the tar archive handle */
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tar_archive = init_handle();
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/* Setup an ar archive handle that refers to the gzip sub archive */
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ar_archive = init_handle();
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ar_archive->dpkg__sub_archive = tar_archive;
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ar_archive->filter = filter_accept_list_reassign;
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#if ENABLE_FEATURE_SEAMLESS_GZ
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llist_add_to(&ar_archive->accept, (char*)"data.tar.gz");
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llist_add_to(&control_tar_llist, (char*)"control.tar.gz");
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#endif
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#if ENABLE_FEATURE_SEAMLESS_BZ2
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llist_add_to(&ar_archive->accept, (char*)"data.tar.bz2");
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llist_add_to(&control_tar_llist, (char*)"control.tar.bz2");
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#endif
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#if ENABLE_FEATURE_SEAMLESS_LZMA
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llist_add_to(&ar_archive->accept, (char*)"data.tar.lzma");
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llist_add_to(&control_tar_llist, (char*)"control.tar.lzma");
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#endif
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opt_complementary = "c--efXx:e--cfXx:f--ceXx:X--cefx:x--cefX";
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opt = getopt32(argv, "cefXx");
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argv += optind;
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argc -= optind;
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if (opt & DPKG_DEB_OPT_CONTENTS) {
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tar_archive->action_header = header_verbose_list;
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}
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extract_dir = NULL;
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need_args = 1;
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if (opt & DPKG_DEB_OPT_CONTROL) {
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ar_archive->accept = control_tar_llist;
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tar_archive->action_data = data_extract_all;
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if (1 == argc) {
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extract_dir = "./DEBIAN";
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} else {
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need_args++;
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}
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}
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if (opt & DPKG_DEB_OPT_FIELD) {
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/* Print the entire control file
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* it should accept a second argument which specifies a
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* specific field to print */
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ar_archive->accept = control_tar_llist;
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llist_add_to(&(tar_archive->accept), (char*)"./control");
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tar_archive->filter = filter_accept_list;
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tar_archive->action_data = data_extract_to_stdout;
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}
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if (opt & DPKG_DEB_OPT_EXTRACT) {
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tar_archive->action_header = header_list;
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}
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if (opt & (DPKG_DEB_OPT_EXTRACT_VERBOSE | DPKG_DEB_OPT_EXTRACT)) {
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tar_archive->action_data = data_extract_all;
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need_args = 2;
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}
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if (need_args != argc) {
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bb_show_usage();
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}
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tar_archive->src_fd = ar_archive->src_fd = xopen(argv[0], O_RDONLY);
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/* Work out where to extract the files */
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/* 2nd argument is a dir name */
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if (argv[1]) {
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extract_dir = argv[1];
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}
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if (extract_dir) {
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mkdir(extract_dir, 0777); /* bb_make_directory(extract_dir, 0777, 0) */
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xchdir(extract_dir);
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}
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/* Do it */
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unpack_ar_archive(ar_archive);
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/* Cleanup */
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if (ENABLE_FEATURE_CLEAN_UP)
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close(ar_archive->src_fd);
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return EXIT_SUCCESS;
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}
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