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96 lines
2.5 KiB
C
96 lines
2.5 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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*
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* Based in part on BusyBox tar, Debian dpkg-deb and GNU ar.
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*
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* There is no single 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 "libbb.h"
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#include "unarchive.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,
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(int) file_header->size, &mtime[4], file_header->name);
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}
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#define AR_CTX_PRINT 0x01
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#define AR_CTX_LIST 0x02
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#define AR_CTX_EXTRACT 0x04
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#define AR_OPT_PRESERVE_DATE 0x08
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#define AR_OPT_VERBOSE 0x10
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#define AR_OPT_CREATE 0x20
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#define AR_OPT_INSERT 0x40
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int ar_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int ar_main(int argc, char **argv)
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{
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static const char msg_unsupported_err[] ALIGN1 =
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"archive %s is not supported";
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archive_handle_t *archive_handle;
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unsigned opt;
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char magic[8];
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archive_handle = init_handle();
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/* Prepend '-' to the first argument if required */
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opt_complementary = "--:p:t:x:-1:p--tx:t--px:x--pt";
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opt = getopt32(argv, "ptxovcr");
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if (opt & AR_CTX_PRINT) {
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archive_handle->action_data = data_extract_to_stdout;
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}
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if (opt & AR_CTX_LIST) {
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archive_handle->action_header = header_list;
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}
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if (opt & AR_CTX_EXTRACT) {
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archive_handle->action_data = data_extract_all;
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}
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if (opt & AR_OPT_PRESERVE_DATE) {
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archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
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}
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if (opt & AR_OPT_VERBOSE) {
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archive_handle->action_header = header_verbose_list_ar;
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}
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if (opt & AR_OPT_CREATE) {
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bb_error_msg_and_die(msg_unsupported_err, "creation");
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}
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if (opt & AR_OPT_INSERT) {
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bb_error_msg_and_die(msg_unsupported_err, "insertion");
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}
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archive_handle->src_fd = xopen(argv[optind++], O_RDONLY);
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while (optind < argc) {
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archive_handle->filter = filter_accept_list;
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llist_add_to(&(archive_handle->accept), argv[optind++]);
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}
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xread(archive_handle->src_fd, 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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continue;
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return EXIT_SUCCESS;
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}
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