archival/dpkg_deb.c

   1 /*
   2  *  This program is free software; you can redistribute it and/or modify
   3  *  it under the terms of the GNU General Public License as published by
   4  *  the Free Software Foundation; either version 2 of the License, or
   5  *  (at your option) any later version.
   6  *
   7  *  This program is distributed in the hope that it will be useful,
   8  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  *  GNU Library General Public License for more details.
  11  *
  12  *  You should have received a copy of the GNU General Public License
  13  *  along with this program; if not, write to the Free Software
  14  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  15  */
  16 #include <fcntl.h>
  17 #include <stdlib.h>
  18 #include <string.h>
  19 #include <unistd.h>
  20 #include <getopt.h>
  21 #include "unarchive.h"
  22 #include "busybox.h"
  23
  24 extern int dpkg_deb_main(int argc, char **argv)
  25 {
  26         archive_handle_t *ar_archive;
  27         archive_handle_t *tar_archive;
  28         int opt = 0;
  29 #ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
  30         const llist_t *control_tar_llist = NULL;
  31 #endif
  32
  33         /* Setup the tar archive handle */
  34         tar_archive = init_handle();
  35
  36         /* Setup an ar archive handle that refers to the gzip sub archive */
  37         ar_archive = init_handle();
  38         ar_archive->sub_archive = tar_archive;
  39         ar_archive->filter = filter_accept_list_reassign;
  40
  41 #ifdef CONFIG_FEATURE_DEB_TAR_GZ
  42         ar_archive->accept = add_to_list(NULL, "data.tar.gz");
  43 # ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
  44         control_tar_llist = add_to_list(NULL, "control.tar.gz");
  45 # endif
  46 #endif
  47
  48 #ifdef CONFIG_FEATURE_DEB_TAR_BZ2
  49         ar_archive->accept = add_to_list(ar_archive->accept, "data.tar.bz2");
  50 # ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
  51         control_tar_llist = add_to_list(control_tar_llist, "control.tar.bz2");
  52 # endif
  53 #endif
  54
  55 #ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
  56         while ((opt = getopt(argc, argv, "cefXx")) != -1) {
  57 #else
  58         while ((opt = getopt(argc, argv, "x")) != -1) {
  59 #endif
  60                 switch (opt) {
  61 #ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
  62                         case 'c':
  63                                 tar_archive->action_header = header_verbose_list;
  64                                 break;
  65                         case 'e':
  66                                 ar_archive->accept = control_tar_llist;
  67                                 tar_archive->action_data = data_extract_all;
  68                                 break;
  69                         case 'f':
  70                                 /* Print the entire control file
  71                                  * it should accept a second argument which specifies a
  72                                  * specific field to print */
  73                                 ar_archive->accept = control_tar_llist;
  74                                 tar_archive->accept = add_to_list(NULL, "./control");;
  75                                 tar_archive->filter = filter_accept_list;
  76                                 tar_archive->action_data = data_extract_to_stdout;
  77                                 break;
  78                         case 'X':
  79                                 tar_archive->action_header = header_list;
  80 #endif
  81                         case 'x':
  82                                 tar_archive->action_data = data_extract_all;
  83                                 break;
  84                         default:
  85                                 show_usage();
  86                 }
  87         }
  88
  89         if (optind + 2 < argc)  {
  90                 show_usage();
  91         }
  92
  93         tar_archive->src_fd = ar_archive->src_fd = xopen(argv[optind++], O_RDONLY);
  94
  95         /* Workout where to extract the files */
  96         /* 2nd argument is a dir name */
  97         mkdir(argv[optind], 0777);
  98         chdir(argv[optind]);
  99
 100         unpack_ar_archive(ar_archive);
 101
 102         /* Cleanup */
 103         close (ar_archive->src_fd);
 104
 105         return(EXIT_SUCCESS);
 106 }
 107