/* vi: set sw=4 ts=4: */
/*
- * Mini ar implementation for busybox
+ * Mini ar implementation for busybox
*
* Copyright (C) 2000 by Glenn McGrath
- * Written by Glenn McGrath <bug1@optushome.com.au> 1 June 2000
- *
+ * Written by Glenn McGrath <bug1@iinet.net.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
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
+ * There is no single standard to adhere to so ar may not portable
+ * between different systems
+ * http://www.unix-systems.org/single_unix_specification_v2/xcu/ar.html
*/
+
#include <fcntl.h>
+#include <stdio.h>
#include <stdlib.h>
-#include <getopt.h>
+#include <string.h>
+#include <time.h>
+#include <utime.h>
#include <unistd.h>
+
+#include "unarchive.h"
#include "busybox.h"
+static void header_verbose_list_ar(const file_header_t *file_header)
+{
+ const char *mode = bb_mode_string(file_header->mode);
+ char *mtime;
+
+ mtime = ctime(&file_header->mtime);
+ mtime[16] = ' ';
+ memmove(&mtime[17], &mtime[20], 4);
+ mtime[21] = '\0';
+ 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);
+}
+
+#define AR_CTX_PRINT 0x01
+#define AR_CTX_LIST 0x02
+#define AR_CTX_EXTRACT 0x04
+#define AR_OPT_PRESERVE_DATE 0x08
+#define AR_OPT_VERBOSE 0x10
+#define AR_OPT_CREATE 0x20
+#define AR_OPT_INSERT 0x40
+
extern int ar_main(int argc, char **argv)
{
- FILE *src_stream = NULL;
- int extract_function = 0, opt = 0;
- file_headers_t *head;
- file_headers_t *ar_extract_list = NULL;
+ archive_handle_t *archive_handle;
+ unsigned long opt;
+ static const char msg_unsupported_err[] =
+ "Archive %s not supported. Install binutils 'ar'.";
+ char magic[8];
- while ((opt = getopt(argc, argv, "ovtpx")) != -1) {
- switch (opt) {
- case 'o':
- extract_function |= extract_preserve_date;
- break;
- case 'v':
- extract_function |= extract_verbose_list;
- break;
- case 't':
- extract_function |= extract_list;
- break;
- case 'p':
- extract_function |= extract_to_stdout;
- break;
- case 'x':
- extract_function |= extract_all_to_fs;
- break;
- default:
- show_usage();
- }
+ archive_handle = init_handle();
+
+ /* Prepend '-' to the first argument if required */
+ bb_opt_complementally = "--:p:t:x:-1:?:p--tx:t--px:x--pt";
+ opt = bb_getopt_ulflags(argc, argv, "ptxovcr");
+
+ if (opt & AR_CTX_PRINT) {
+ archive_handle->action_data = data_extract_to_stdout;
+ }
+ if (opt & AR_CTX_LIST) {
+ archive_handle->action_header = header_list;
+ }
+ if (opt & AR_CTX_EXTRACT) {
+ archive_handle->action_data = data_extract_all;
+ }
+ if (opt & AR_OPT_PRESERVE_DATE) {
+ archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
}
-
- /* check the src filename was specified */
- if (optind == argc) {
- show_usage();
+ if (opt & AR_OPT_VERBOSE) {
+ archive_handle->action_header = header_verbose_list_ar;
+ }
+ if (opt & AR_OPT_CREATE) {
+ bb_error_msg_and_die(msg_unsupported_err, "creation");
+ }
+ if (opt & AR_OPT_INSERT) {
+ bb_error_msg_and_die(msg_unsupported_err, "insertion");
}
- src_stream = xfopen(argv[optind++], "r");
- head = get_ar_headers(src_stream);
+ archive_handle->src_fd = bb_xopen(argv[optind++], O_RDONLY);
- /* find files to extract or display */
- /* search through argv and build extract list */
- ar_extract_list = (file_headers_t *) xcalloc(1, sizeof(file_headers_t));
- if (optind < argc) {
- while (optind < argc) {
- ar_extract_list = add_from_archive_list(head, ar_extract_list, argv[optind]);
- optind++;
- }
- } else {
- ar_extract_list = head;
+ while (optind < argc) {
+ archive_handle->filter = filter_accept_list;
+ archive_handle->accept = llist_add_to(archive_handle->accept, argv[optind++]);
}
- /* If there isnt even one possible entry then abort */
- if (ar_extract_list->name == NULL) {
- error_msg_and_die("No files to extract");
- }
+ archive_xread_all(archive_handle, magic, 7);
+ if (strncmp(magic, "!<arch>", 7) != 0) {
+ bb_error_msg_and_die("Invalid ar magic");
+ }
+ archive_handle->offset += 7;
- fseek(src_stream, 0, SEEK_SET);
- extract_archive(src_stream, stdout, ar_extract_list, extract_function, "./");
+ while (get_header_ar(archive_handle) == EXIT_SUCCESS);
return EXIT_SUCCESS;
}