diff options
Diffstat (limited to 'archival/ar.c')
-rw-r--r-- | archival/ar.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/archival/ar.c b/archival/ar.c new file mode 100644 index 000000000..521e03799 --- /dev/null +++ b/archival/ar.c @@ -0,0 +1,93 @@ +/* vi: set sw=4 ts=4: */ +/* + * Mini ar implementation for busybox + * + * Copyright (C) 2000 by Glenn McGrath + * Written by Glenn McGrath <bug1@iinet.net.au> 1 June 2000 + * + * 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 "busybox.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) +{ + archive_handle_t *archive_handle; + unsigned opt; + static const char msg_unsupported_err[] = + "Archive %s not supported. Install binutils 'ar'."; + 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(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; + } + 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); + + return EXIT_SUCCESS; +} |