[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Mini ar implementation for busybox
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| 4 | *
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| 5 | * Copyright (C) 2000 by Glenn McGrath
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| 6 | * Written by Glenn McGrath <bug1@iinet.net.au> 1 June 2000
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| 7 | *
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| 8 | * Based in part on BusyBox tar, Debian dpkg-deb and GNU ar.
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| 9 | *
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| 10 | * This program is free software; you can redistribute it and/or modify
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| 11 | * it under the terms of the GNU General Public License as published by
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| 12 | * the Free Software Foundation; either version 2 of the License, or
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| 13 | * (at your option) any later version.
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| 14 | *
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| 15 | * This program is distributed in the hope that it will be useful,
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| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 18 | * General Public License for more details.
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| 19 | *
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| 20 | * You should have received a copy of the GNU General Public License
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| 21 | * along with this program; if not, write to the Free Software
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| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 23 | *
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| 24 | * There is no single standard to adhere to so ar may not portable
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| 25 | * between different systems
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| 26 | * http://www.unix-systems.org/single_unix_specification_v2/xcu/ar.html
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| 27 | */
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| 28 |
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| 29 | #include <fcntl.h>
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| 30 | #include <stdio.h>
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| 31 | #include <stdlib.h>
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| 32 | #include <string.h>
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| 33 | #include <time.h>
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| 34 | #include <utime.h>
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| 35 | #include <unistd.h>
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| 36 |
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| 37 | #include "unarchive.h"
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| 38 | #include "busybox.h"
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| 39 |
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| 40 | static void header_verbose_list_ar(const file_header_t *file_header)
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| 41 | {
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| 42 | const char *mode = bb_mode_string(file_header->mode);
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| 43 | char *mtime;
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| 44 |
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| 45 | mtime = ctime(&file_header->mtime);
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| 46 | mtime[16] = ' ';
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| 47 | memmove(&mtime[17], &mtime[20], 4);
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| 48 | mtime[21] = '\0';
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| 49 | 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);
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| 50 | }
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| 51 |
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| 52 | #define AR_CTX_PRINT 0x01
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| 53 | #define AR_CTX_LIST 0x02
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| 54 | #define AR_CTX_EXTRACT 0x04
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| 55 | #define AR_OPT_PRESERVE_DATE 0x08
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| 56 | #define AR_OPT_VERBOSE 0x10
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| 57 | #define AR_OPT_CREATE 0x20
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| 58 | #define AR_OPT_INSERT 0x40
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| 59 |
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| 60 | int ar_main(int argc, char **argv)
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| 61 | {
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| 62 | archive_handle_t *archive_handle;
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| 63 | unsigned long opt;
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| 64 | static const char msg_unsupported_err[] =
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| 65 | "Archive %s not supported. Install binutils 'ar'.";
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| 66 | char magic[8];
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| 67 |
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| 68 | archive_handle = init_handle();
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| 69 |
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| 70 | /* Prepend '-' to the first argument if required */
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| 71 | bb_opt_complementally = "--:p:t:x:-1:?:p--tx:t--px:x--pt";
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| 72 | opt = bb_getopt_ulflags(argc, argv, "ptxovcr");
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| 73 |
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| 74 | if (opt & AR_CTX_PRINT) {
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| 75 | archive_handle->action_data = data_extract_to_stdout;
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| 76 | }
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| 77 | if (opt & AR_CTX_LIST) {
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| 78 | archive_handle->action_header = header_list;
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| 79 | }
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| 80 | if (opt & AR_CTX_EXTRACT) {
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| 81 | archive_handle->action_data = data_extract_all;
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| 82 | }
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| 83 | if (opt & AR_OPT_PRESERVE_DATE) {
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| 84 | archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
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| 85 | }
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| 86 | if (opt & AR_OPT_VERBOSE) {
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| 87 | archive_handle->action_header = header_verbose_list_ar;
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| 88 | }
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| 89 | if (opt & AR_OPT_CREATE) {
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| 90 | bb_error_msg_and_die(msg_unsupported_err, "creation");
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| 91 | }
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| 92 | if (opt & AR_OPT_INSERT) {
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| 93 | bb_error_msg_and_die(msg_unsupported_err, "insertion");
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| 94 | }
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| 95 |
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| 96 | archive_handle->src_fd = bb_xopen(argv[optind++], O_RDONLY);
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| 97 |
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| 98 | while (optind < argc) {
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| 99 | archive_handle->filter = filter_accept_list;
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| 100 | llist_add_to(&(archive_handle->accept), argv[optind++]);
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| 101 | }
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| 102 |
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| 103 | archive_xread_all(archive_handle, magic, 7);
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| 104 | if (strncmp(magic, "!<arch>", 7) != 0) {
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| 105 | bb_error_msg_and_die("Invalid ar magic");
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| 106 | }
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| 107 | archive_handle->offset += 7;
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| 108 |
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| 109 | while (get_header_ar(archive_handle) == EXIT_SUCCESS);
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| 110 |
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| 111 | return EXIT_SUCCESS;
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| 112 | }
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