mirror of
https://github.com/sheumann/hush.git
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122 lines
3.7 KiB
C
122 lines
3.7 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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/* From gunzip.c */
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extern int gz_open(FILE *compressed_file, int *pid);
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extern void gz_close(int gunzip_pid);
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extern int tar_unzip_init(int tarFd);
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extern int readTarFile(int tarFd, int extractFlag, int listFlag,
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int tostdoutFlag, int verboseFlag, char** extractList, char** excludeList);
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extern int deb_extract(int optflags, const char *dir_name, const char *deb_filename)
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{
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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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char **extract_list = NULL;
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ar_headers_t *ar_headers = NULL;
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char ar_filename[15];
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int extract_flag = FALSE;
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int list_flag = FALSE;
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int verbose_flag = FALSE;
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int extract_to_stdout = FALSE;
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int srcFd = 0;
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int status;
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pid_t pid;
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FILE *comp_file = NULL;
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if (dpkg_deb_contents == (dpkg_deb_contents & optflags)) {
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strcpy(ar_filename, "data.tar.gz");
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verbose_flag = TRUE;
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list_flag = TRUE;
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}
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if (dpkg_deb_list == (dpkg_deb_list & optflags)) {
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strcpy(ar_filename, "data.tar.gz");
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list_flag = TRUE;
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}
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if (dpkg_deb_control == (dpkg_deb_control & optflags)) {
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strcpy(ar_filename, "control.tar.gz");
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extract_flag = TRUE;
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}
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if (dpkg_deb_extract == (dpkg_deb_extract & optflags)) {
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strcpy(ar_filename, "data.tar.gz");
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extract_flag = TRUE;
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}
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if (dpkg_deb_verbose_extract == (dpkg_deb_verbose_extract & optflags)) {
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strcpy(ar_filename, "data.tar.gz");
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extract_flag = TRUE;
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list_flag = TRUE;
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}
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ar_headers = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
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srcFd = open(deb_filename, O_RDONLY);
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*ar_headers = get_ar_headers(srcFd);
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if (ar_headers->next == NULL) {
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error_msg_and_die("Couldnt find %s in %s", ar_filename, deb_filename);
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}
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while (ar_headers->next != NULL) {
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if (strcmp(ar_headers->name, ar_filename) == 0) {
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break;
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}
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ar_headers = ar_headers->next;
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}
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lseek(srcFd, ar_headers->offset, SEEK_SET);
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/* Uncompress the file */
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comp_file = fdopen(srcFd, "r");
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if ((srcFd = gz_open(comp_file, &pid)) == EXIT_FAILURE) {
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error_msg_and_die("Couldnt unzip file");
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}
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if ( dir_name != NULL) {
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if (is_directory(dir_name, TRUE, NULL)==FALSE) {
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mkdir(dir_name, 0755);
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}
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if (chdir(dir_name)==-1) {
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error_msg_and_die("Cannot change to dir %s", dir_name);
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}
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}
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status = readTarFile(srcFd, extract_flag, list_flag,
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extract_to_stdout, verbose_flag, NULL, extract_list);
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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(pid);
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close(srcFd);
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fclose(comp_file);
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return status;
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} |