mirror of
https://github.com/sheumann/hush.git
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102 lines
2.7 KiB
C
102 lines
2.7 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 tarball for details.
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*/
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "unarchive.h"
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#include "busybox.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)
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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 long opt;
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char *extract_dir = NULL;
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short argcount = 1;
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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->sub_archive = tar_archive;
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ar_archive->filter = filter_accept_list_reassign;
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#ifdef CONFIG_FEATURE_DEB_TAR_GZ
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ar_archive->accept = llist_add_to(NULL, "data.tar.gz");
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control_tar_llist = llist_add_to(NULL, "control.tar.gz");
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#endif
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#ifdef CONFIG_FEATURE_DEB_TAR_BZ2
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ar_archive->accept = llist_add_to(ar_archive->accept, "data.tar.bz2");
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control_tar_llist = llist_add_to(control_tar_llist, "control.tar.bz2");
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#endif
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bb_opt_complementally = "?c--efXx:e--cfXx:f--ceXx:X--cefx:x--cefX";
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opt = bb_getopt_ulflags(argc, argv, "cefXx");
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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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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 (optind + 1 == argc) {
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extract_dir = "./DEBIAN";
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} else {
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argcount++;
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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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tar_archive->accept = llist_add_to(NULL, "./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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argcount = 2;
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}
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if ((optind + argcount) != argc) {
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bb_show_usage();
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}
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tar_archive->src_fd = ar_archive->src_fd = bb_xopen(argv[optind++], O_RDONLY);
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/* Workout where to extract the files */
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/* 2nd argument is a dir name */
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if (argv[optind]) {
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extract_dir = argv[optind];
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}
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if (extract_dir) {
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mkdir(extract_dir, 0777);
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chdir(extract_dir); /* error check? */
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}
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unpack_ar_archive(ar_archive);
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/* Cleanup */
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close (ar_archive->src_fd);
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return(EXIT_SUCCESS);
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}
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