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/* vi: set sw=4 ts=4: */
/*
* Mini ar implementation for busybox
*
* Copyright (C) 2000 by Glenn McGrath
*
* Based in part on BusyBox tar, Debian dpkg-deb and GNU ar.
*
* 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 "libbb.h"
#include "unarchive.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
int ar_main(int argc, char **argv);
int ar_main(int argc, char **argv)
{
static const char msg_unsupported_err[] ALIGN1 =
"archive %s is not supported";
archive_handle_t *archive_handle;
unsigned opt;
char magic[8];
archive_handle = init_handle();
/* Prepend '-' to the first argument if required */
opt_complementary = "--:p:t:x:-1:p--tx:t--px:x--pt";
opt = getopt32(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;
}
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);
while (optind < argc) {
archive_handle->filter = filter_accept_list;
llist_add_to(&(archive_handle->accept), argv[optind++]);
}
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)
continue;
return EXIT_SUCCESS;
}
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