/* 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
- *
- * 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.
+ * Written by Glenn McGrath <bug1@iinet.net.au> 1 June 2000
*
- * 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.
+ * Based in part on BusyBox tar, Debian dpkg-deb and GNU ar.
*
- * 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
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*
+ * 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 <stdlib.h>
-#include <getopt.h>
-#include <unistd.h>
+
#include "busybox.h"
+#include "unarchive.h"
-extern int ar_main(int argc, char **argv)
+static void header_verbose_list_ar(const file_header_t *file_header)
{
- 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 */
+ const char *mode = bb_mode_string(file_header->mode);
+ char *mtime;
- FILE *src_file = NULL, *dst_file = NULL;
- int funct = 0, opt=0;
+ 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
+
+int ar_main(int argc, char **argv);
+int ar_main(int argc, char **argv)
+{
+ archive_handle_t *archive_handle;
+ unsigned opt;
+ static const char msg_unsupported_err[] =
+ "Archive %s not supported. Install binutils 'ar'.";
+ char magic[8];
- ar_headers_t *head, *ar_extract_list=NULL;
+ archive_handle = init_handle();
- ar_extract_list = (ar_headers_t *) xcalloc(1, sizeof(ar_headers_t));
- head = (ar_headers_t *) xcalloc(1, sizeof(ar_headers_t));
+ /* Prepend '-' to the first argument if required */
+ opt_complementary = "--:p:t:x:-1:?:p--tx:t--px:x--pt";
+ opt = getopt32(argc, argv, "ptxovcr");
- 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();
- }
+ if (opt & AR_CTX_PRINT) {
+ archive_handle->action_data = data_extract_to_stdout;
}
-
- /* check the src filename was specified */
- if (optind == argc) {
- show_usage();
+ if (opt & AR_CTX_LIST) {
+ archive_handle->action_header = header_list;
}
-
- if ( (src_file = wfopen(argv[optind], "r")) < 0) {
- error_msg_and_die("Cannot read %s", argv[optind]);
+ if (opt & AR_CTX_EXTRACT) {
+ archive_handle->action_data = data_extract_all;
}
-
- 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 (opt & AR_OPT_PRESERVE_DATE) {
+ archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
+ }
+ 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");
+ }
+
+ archive_handle->src_fd = xopen(argv[optind++], O_RDONLY);
- /* if individual files not found extract all files */
- if (ar_extract_list->next==NULL) {
- ar_extract_list = head;
+ while (optind < argc) {
+ archive_handle->filter = filter_accept_list;
+ llist_add_to(&(archive_handle->accept), argv[optind++]);
}
- /* 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;
+ xread(archive_handle->src_fd, magic, 7);
+ if (strncmp(magic, "!<arch>", 7) != 0) {
+ bb_error_msg_and_die("invalid ar magic");
}
+ archive_handle->offset += 7;
+
+ while (get_header_ar(archive_handle) == EXIT_SUCCESS) /* repeat */;
+
return EXIT_SUCCESS;
}
projects / oweals / busybox.git / blobdiff