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/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
* Merge this applet into dpkg when dpkg becomes more stable
*/
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <signal.h>
#include "busybox.h"
/* From gunzip.c */
extern int gz_open(FILE *compressed_file, int *pid);
extern void gz_close(int gunzip_pid);
typedef struct ar_headers_s {
char *name;
size_t size;
uid_t uid;
gid_t gid;
mode_t mode;
time_t mtime;
off_t offset;
struct ar_headers_s *next;
} ar_headers_t;
extern ar_headers_t get_ar_headers(int srcFd);
extern int tar_unzip_init(int tarFd);
extern int readTarFile(int tarFd, int extractFlag, int listFlag,
int tostdoutFlag, int verboseFlag, char** extractList, char** excludeList);
static const int dpkg_deb_contents = 1;
static const int dpkg_deb_control = 2;
// const int dpkg_deb_info = 4;
static const int dpkg_deb_extract = 8;
static const int dpkg_deb_verbose_extract = 16;
static const int dpkg_deb_list = 32;
extern int deb_extract(int optflags, const char *dir_name, const char *deb_filename)
{
char **extract_list = NULL;
ar_headers_t *ar_headers = NULL;
char ar_filename[15];
int extract_flag = FALSE;
int list_flag = FALSE;
int verbose_flag = FALSE;
int extract_to_stdout = FALSE;
int srcFd = 0;
int status;
pid_t pid;
FILE *comp_file = NULL;
if (dpkg_deb_contents == (dpkg_deb_contents & optflags)) {
strcpy(ar_filename, "data.tar.gz");
verbose_flag = TRUE;
list_flag = TRUE;
}
if (dpkg_deb_list == (dpkg_deb_list & optflags)) {
strcpy(ar_filename, "data.tar.gz");
list_flag = TRUE;
}
if (dpkg_deb_control == (dpkg_deb_control & optflags)) {
strcpy(ar_filename, "control.tar.gz");
extract_flag = TRUE;
}
if (dpkg_deb_extract == (dpkg_deb_extract & optflags)) {
strcpy(ar_filename, "data.tar.gz");
extract_flag = TRUE;
}
if (dpkg_deb_verbose_extract == (dpkg_deb_verbose_extract & optflags)) {
strcpy(ar_filename, "data.tar.gz");
extract_flag = TRUE;
list_flag = TRUE;
}
ar_headers = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
srcFd = open(deb_filename, O_RDONLY);
*ar_headers = get_ar_headers(srcFd);
if (ar_headers->next == NULL) {
error_msg_and_die("Couldnt find %s in %s", ar_filename, deb_filename);
}
while (ar_headers->next != NULL) {
if (strcmp(ar_headers->name, ar_filename) == 0) {
break;
}
ar_headers = ar_headers->next;
}
lseek(srcFd, ar_headers->offset, SEEK_SET);
/* Uncompress the file */
comp_file = fdopen(srcFd, "r");
if ((srcFd = gz_open(comp_file, &pid)) == EXIT_FAILURE) {
error_msg_and_die("Couldnt unzip file");
}
if ( dir_name != NULL) {
if (is_directory(dir_name, TRUE, NULL)==FALSE) {
mkdir(dir_name, 0755);
}
if (chdir(dir_name)==-1) {
error_msg_and_die("Cannot change to dir %s", dir_name);
}
}
status = readTarFile(srcFd, extract_flag, list_flag,
extract_to_stdout, verbose_flag, NULL, extract_list);
/* we are deliberately terminating the child so we can safely ignore this */
signal(SIGTERM, SIG_IGN);
gz_close(pid);
close(srcFd);
fclose(comp_file);
return status;
}
extern int dpkg_deb_main(int argc, char **argv)
{
char *target_dir = NULL;
int opt = 0;
int optflag = 0;
while ((opt = getopt(argc, argv, "cexXl")) != -1) {
switch (opt) {
case 'c':
optflag |= dpkg_deb_contents;
break;
case 'e':
optflag |= dpkg_deb_control;
break;
case 'X':
optflag |= dpkg_deb_verbose_extract;
break;
case 'x':
optflag |= dpkg_deb_extract;
break;
case 'l':
optflag |= dpkg_deb_list;
break;
/* case 'I':
optflag |= dpkg_deb_info;
break;
*/
default:
show_usage();
}
}
if (((optind + 1 ) > argc) || (optflag == 0)) {
show_usage();
}
if ((optflag & dpkg_deb_control) || (optflag & dpkg_deb_extract) || (optflag & dpkg_deb_verbose_extract)) {
if ( (optind + 1) == argc ) {
target_dir = (char *) xmalloc(7);
strcpy(target_dir, "DEBIAN");
} else {
target_dir = (char *) xmalloc(strlen(argv[optind + 1]));
strcpy(target_dir, argv[optind + 1]);
}
}
deb_extract(optflag, target_dir, argv[optind]);
/* else if (optflag & dpkg_deb_info) {
extract_flag = TRUE;
extract_to_stdout = TRUE;
strcpy(ar_filename, "control.tar.gz");
extract_list = argv+optind+1;
printf("list one is [%s]\n",extract_list[0]);
}
*/
return(EXIT_SUCCESS);
}
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