mirror of
https://github.com/sheumann/hush.git
synced 2024-12-22 14:30:31 +00:00
128 lines
3.6 KiB
C
128 lines
3.6 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Mini ar implementation for busybox
|
|
*
|
|
* Copyright (C) 2000 by Glenn McGrath
|
|
* Written by Glenn McGrath <bug1@optushome.com.au> 1 June 2000
|
|
*
|
|
* Based in part on BusyBox tar, Debian dpkg-deb and GNU ar.
|
|
*
|
|
* 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
|
|
* 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
|
|
*
|
|
*/
|
|
#include <fcntl.h>
|
|
#include <stdlib.h>
|
|
#include <getopt.h>
|
|
#include <unistd.h>
|
|
#include "busybox.h"
|
|
|
|
extern int ar_main(int argc, char **argv)
|
|
{
|
|
const int preserve_date = 1; /* preserve original dates */
|
|
const int verbose = 2; /* be verbose */
|
|
const int display = 4; /* display contents */
|
|
const int extract_to_file = 8; /* extract contents of archive */
|
|
const int extract_to_stdout = 16; /* extract to stdout */
|
|
|
|
FILE *src_file = NULL, *dst_file = NULL;
|
|
int funct = 0, opt=0;
|
|
|
|
ar_headers_t *head, *ar_extract_list=NULL;
|
|
|
|
ar_extract_list = (ar_headers_t *) xcalloc(1, sizeof(ar_headers_t));
|
|
head = (ar_headers_t *) xcalloc(1, sizeof(ar_headers_t));
|
|
|
|
while ((opt = getopt(argc, argv, "ovtpx")) != -1) {
|
|
switch (opt) {
|
|
case 'o':
|
|
funct |= preserve_date;
|
|
break;
|
|
case 'v':
|
|
funct |= verbose;
|
|
break;
|
|
case 't':
|
|
funct |= display;
|
|
break;
|
|
case 'p':
|
|
funct |= extract_to_stdout;
|
|
break;
|
|
case 'x':
|
|
funct |= extract_to_file;
|
|
break;
|
|
default:
|
|
show_usage();
|
|
}
|
|
}
|
|
|
|
/* check the src filename was specified */
|
|
if (optind == argc) {
|
|
show_usage();
|
|
}
|
|
|
|
if ( (src_file = wfopen(argv[optind], "r")) < 0) {
|
|
error_msg_and_die("Cannot read %s", argv[optind]);
|
|
}
|
|
|
|
optind++;
|
|
head = get_ar_headers(src_file);
|
|
/* find files to extract or display */
|
|
/* search through argv and build extract list */
|
|
for (;optind < argc; optind++) {
|
|
ar_headers_t *ar_entry;
|
|
ar_entry = (ar_headers_t *) xcalloc(1, sizeof(ar_headers_t));
|
|
ar_entry = head;
|
|
while (ar_entry->next != NULL) {
|
|
if (strcmp(argv[optind], ar_entry->name) == 0) {
|
|
ar_headers_t *tmp;
|
|
tmp = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
|
|
*tmp = *ar_extract_list;
|
|
*ar_extract_list = *ar_entry;
|
|
ar_extract_list->next = tmp;
|
|
break;
|
|
}
|
|
ar_entry=ar_entry->next;
|
|
}
|
|
}
|
|
|
|
/* if individual files not found extract all files */
|
|
if (ar_extract_list->next==NULL) {
|
|
ar_extract_list = head;
|
|
}
|
|
|
|
/* find files to extract or display */
|
|
while (ar_extract_list->next != NULL) {
|
|
if (funct & extract_to_file) {
|
|
dst_file = wfopen(ar_extract_list->name, "w");
|
|
}
|
|
else if (funct & extract_to_stdout) {
|
|
dst_file = stdout;
|
|
}
|
|
if ((funct & extract_to_file) || (funct & extract_to_stdout)) {
|
|
fseek(src_file, ar_extract_list->offset, SEEK_SET);
|
|
copy_file_chunk(src_file, dst_file, ar_extract_list->size);
|
|
}
|
|
if (funct & verbose) {
|
|
printf("%s %d/%d %8d %s ", mode_string(ar_extract_list->mode),
|
|
ar_extract_list->uid, ar_extract_list->gid,
|
|
(int) ar_extract_list->size, time_string(ar_extract_list->mtime));
|
|
}
|
|
if ((funct & display) || (funct & verbose)){
|
|
printf("%s\n", ar_extract_list->name);
|
|
}
|
|
ar_extract_list = ar_extract_list->next;
|
|
}
|
|
return EXIT_SUCCESS;
|
|
}
|