81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Copyright (C) tons of folks. Tracking down who wrote what
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* isn't something I'm going to worry about... If you wrote something
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* here, please feel free to acknowledge your work.
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*
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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 GNU
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* 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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* Based in part on code from sash, Copyright (c) 1999 by David I. Bell
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* Permission has been granted to redistribute this code under the GPL.
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*
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*/
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <signal.h>
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#include "libbb.h"
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const int dpkg_deb_contents = 1;
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const int dpkg_deb_control = 2;
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const int dpkg_deb_info = 4;
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const int dpkg_deb_extract = 8;
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const int dpkg_deb_verbose_extract = 16;
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const int dpkg_deb_list = 32;
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extern int deb_extract(const char *package_filename, const int function, char *target_dir)
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{
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FILE *deb_file, *uncompressed_file;
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ar_headers_t *headers = NULL;
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char *ared_file;
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int gunzip_pid;
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if ((function == dpkg_deb_info) || (function == dpkg_deb_control)) {
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ared_file = xstrdup("control.tar.gz");
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} else {
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ared_file = xstrdup("data.tar.gz");
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}
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/* open the debian package to be worked on */
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deb_file = wfopen(package_filename, "r");
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headers = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
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/* get a linked list of all ar entries */
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if ((headers = get_ar_headers(deb_file)) == NULL) {
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error_msg("Couldnt get ar headers\n");
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return(EXIT_FAILURE);
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}
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/* seek to the start of the .tar.gz file within the ar file*/
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if (seek_ared_file(deb_file, headers, ared_file) == EXIT_FAILURE) {
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error_msg("Couldnt seek to ar file");
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}
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/* open a stream of decompressed data */
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uncompressed_file = fdopen(gz_open(deb_file, &gunzip_pid), "r");
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/* get a list of all tar headers inside the .gz file */
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untar(uncompressed_file, dpkg_deb_extract, target_dir);
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/* we are deliberately terminating the child so we can safely ignore this */
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signal(SIGTERM, SIG_IGN);
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gz_close(gunzip_pid);
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fclose(deb_file);
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fclose(uncompressed_file);
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return(EXIT_SUCCESS);
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} |