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 char *deb_extract(const char *package_filename, const int function, const char *argument, const char *argument2)
40 FILE *deb_file, *uncompressed_file;
41 ar_headers_t *headers = NULL;
42 char *ared_file = NULL;
43 char *output_buffer = NULL;
48 case (extract_control):
50 ared_file = xstrdup("control.tar.gz");
53 ared_file = xstrdup("data.tar.gz");
57 /* open the debian package to be worked on */
58 deb_file = wfopen(package_filename, "r");
60 headers = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
62 /* get a linked list of all ar entries */
63 if ((headers = get_ar_headers(deb_file)) == NULL) {
64 error_msg("Couldnt get ar headers\n");
68 /* seek to the start of the .tar.gz file within the ar file*/
69 if (seek_ared_file(deb_file, headers, ared_file) == EXIT_FAILURE) {
70 error_msg("Couldnt seek to ar file");
73 /* open a stream of decompressed data */
74 uncompressed_file = fdopen(gz_open(deb_file, &gunzip_pid), "r");
76 if (function & extract_fsys_tarfile) {
77 copy_file_chunk(uncompressed_file, stdout, -1);
81 if (function & extract_contents_to_file) {
82 output = wfopen(argument, "w");
87 output_buffer = untar(uncompressed_file, output, function, argument, argument2);
88 if (output != stdout) {
94 fclose(uncompressed_file);
97 return(output_buffer);