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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