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145 lines
4.1 KiB
C
145 lines
4.1 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini ar implementation for busybox
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*
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* Copyright (C) 2000 by Glenn McGrath
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* Written by Glenn McGrath <bug1@optushome.com.au> 1 June 2000
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*
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* Based in part on BusyBox tar, Debian dpkg-deb and GNU ar.
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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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* There is no signle standard to adhere to so ar may not portable
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* between different systems
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* http://www.unix-systems.org/single_unix_specification_v2/xcu/ar.html
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*/
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#include <sys/types.h>
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#include <fcntl.h>
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#include <fnmatch.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <utime.h>
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#include <unistd.h>
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#include <getopt.h>
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#include "unarchive.h"
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#include "busybox.h"
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static void header_verbose_list_ar(const file_header_t *file_header)
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{
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const char *mode = bb_mode_string(file_header->mode);
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char *mtime;
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mtime = ctime(&file_header->mtime);
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mtime[16] = ' ';
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memmove(&mtime[17], &mtime[20], 4);
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mtime[21] = '\0';
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printf("%s %d/%d%7d %s %s\n", &mode[1], file_header->uid, file_header->gid, (int) file_header->size, &mtime[4], file_header->name);
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}
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#if !defined CONFIG_TAR && !defined CONFIG_DPKG_DEB && !defined CONFIG_CPIO
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/* This is simpler than data_extract_all */
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static void data_extract_regular_file(archive_handle_t *archive_handle)
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{
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file_header_t *file_header;
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int dst_fd;
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file_header = archive_handle->file_header;
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dst_fd = bb_xopen(file_header->name, O_WRONLY | O_CREAT);
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bb_copyfd_size(archive_handle->src_fd, dst_fd, file_header->size);
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close(dst_fd);
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chmod(file_header->name, file_header->mode);
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chown(file_header->name, file_header->uid, file_header->gid);
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if (archive_handle->flags & ARCHIVE_PRESERVE_DATE) {
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struct utimbuf t;
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t.actime = t.modtime = file_header->mtime;
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utime(file_header->name, &t);
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}
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return;
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}
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#endif
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extern int ar_main(int argc, char **argv)
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{
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archive_handle_t *archive_handle;
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int opt;
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#if !defined CONFIG_DPKG_DEB && !defined CONFIG_DPKG
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char magic[8];
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#endif
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archive_handle = init_handle();
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while ((opt = getopt(argc, argv, "covtpxX")) != -1) {
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switch (opt) {
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case 'p': /* print */
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archive_handle->action_data = data_extract_to_stdout;
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break;
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case 't': /* list contents */
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archive_handle->action_header = header_list;
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break;
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case 'X':
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archive_handle->action_header = header_verbose_list_ar;
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case 'x': /* extract */
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#if defined CONFIG_TAR || defined CONFIG_DPKG_DEB || defined CONFIG_CPIO
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archive_handle->action_data = data_extract_all;
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#else
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archive_handle->action_data = data_extract_regular_file;
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#endif
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break;
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/* Modifiers */
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case 'o': /* preserve original dates */
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archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
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break;
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case 'v': /* verbose */
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archive_handle->action_header = header_verbose_list_ar;
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break;
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default:
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bb_show_usage();
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}
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}
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/* check the src filename was specified */
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if (optind == argc) {
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bb_show_usage();
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}
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archive_handle->src_fd = bb_xopen(argv[optind++], O_RDONLY);
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/* TODO: This is the same as in tar, seperate function ? */
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while (optind < argc) {
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archive_handle->filter = filter_accept_list;
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archive_handle->accept = llist_add_to(archive_handle->accept, argv[optind]);
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optind++;
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}
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#if defined CONFIG_DPKG_DEB || defined CONFIG_DPKG
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unpack_ar_archive(archive_handle);
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#else
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archive_xread_all(archive_handle, magic, 7);
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if (strncmp(magic, "!<arch>", 7) != 0) {
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bb_error_msg_and_die("Invalid ar magic");
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}
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archive_handle->offset += 7;
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while (get_header_ar(archive_handle) == EXIT_SUCCESS);
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#endif
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return EXIT_SUCCESS;
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}
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