1 /* vi: set sw=4 ts=4: */
3 * Copyright (C) tons of folks. Tracking down who wrote what
4 * isn't something I'm going to worry about... If you wrote something
5 * here, please feel free to acknowledge your work.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
22 * Permission has been granted to redistribute this code under the GPL.
34 * The contents of argument depend on the value of function.
35 * It is either a dir name or a control file or field name(see dpkg_deb.c)
37 extern int deb_extract(const char *package_filename, int function, char *argument)
40 FILE *deb_file, *uncompressed_file;
41 ar_headers_t *headers = NULL;
42 char *ared_file = NULL;
47 case (extract_control):
49 ared_file = xstrdup("control.tar.gz");
52 ared_file = xstrdup("data.tar.gz");
56 /* open the debian package to be worked on */
57 deb_file = wfopen(package_filename, "r");
59 headers = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
61 /* get a linked list of all ar entries */
62 if ((headers = get_ar_headers(deb_file)) == NULL) {
63 error_msg("Couldnt get ar headers\n");
67 /* seek to the start of the .tar.gz file within the ar file*/
68 if (seek_ared_file(deb_file, headers, ared_file) == EXIT_FAILURE) {
69 error_msg("Couldnt seek to ar file");
72 /* open a stream of decompressed data */
73 uncompressed_file = fdopen(gz_open(deb_file, &gunzip_pid), "r");
75 if (function & extract_fsys_tarfile) {
76 copy_file_chunk(uncompressed_file, stdout, -1);
78 untar(uncompressed_file, function, argument);
80 /* we are deliberately terminating the child so we can safely ignore this */
84 fclose(uncompressed_file);