mirror of
https://github.com/sheumann/hush.git
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125 lines
3.4 KiB
C
125 lines
3.4 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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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 <getopt.h>
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#include "unarchive.h"
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#include "busybox.h"
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extern 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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int opt = 0;
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#ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
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const llist_t *control_tar_llist = NULL;
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#endif
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#ifndef CONFIG_AR
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char magic[7];
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#endif
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/* a .deb file is an ar archive that contain three files,
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* data.tar.gz, control.tar.gz and debian
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*/
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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 = add_to_list(NULL, "data.tar.gz");
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# ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
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control_tar_llist = add_to_list(NULL, "control.tar.gz");
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# endif
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#endif
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#ifdef CONFIG_FEATURE_DEB_TAR_BZ2
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ar_archive->accept = add_to_list(ar_archive->accept, "data.tar.bz2");
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# ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
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control_tar_llist = add_to_list(control_tar_llist, "control.tar.bz2");
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# endif
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#endif
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#ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
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while ((opt = getopt(argc, argv, "cefXx")) != -1) {
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#else
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while ((opt = getopt(argc, argv, "x")) != -1) {
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#endif
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switch (opt) {
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#ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
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case 'c':
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tar_archive->action_header = header_verbose_list;
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break;
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case 'e':
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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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break;
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case 'f':
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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 = add_to_list(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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break;
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case 'X':
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tar_archive->action_header = header_list;
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#endif
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case 'x':
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tar_archive->action_data = data_extract_all;
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break;
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default:
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show_usage();
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}
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}
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if (optind + 2 < argc) {
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show_usage();
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}
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tar_archive->src_fd = ar_archive->src_fd = 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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mkdir(argv[optind], 0777);
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chdir(argv[optind]);
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#ifdef CONFIG_AR
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unpack_ar_archive(ar_archive);
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#else
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xread_all(ar_archive->src_fd, magic, 7);
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if (strncmp(magic, "!<arch>", 7) != 0) {
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error_msg_and_die("Invalid ar magic");
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}
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ar_archive->offset += 7;
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while (get_header_ar(ar_archive) == EXIT_SUCCESS);
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#endif
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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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