1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * dpkg-deb packs, unpacks and provides information about Debian archives.
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4 | *
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5 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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6 | */
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7 |
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8 | //usage:#define dpkg_deb_trivial_usage
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9 | //usage: "[-cefxX] FILE [argument"
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10 | //usage:#define dpkg_deb_full_usage "\n\n"
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11 | //usage: "Perform actions on Debian packages (.debs)\n"
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12 | //usage: "\n -c List contents of filesystem tree"
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13 | //usage: "\n -e Extract control files to [argument] directory"
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14 | //usage: "\n -f Display control field name starting with [argument]"
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15 | //usage: "\n -x Extract packages filesystem tree to directory"
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16 | //usage: "\n -X Verbose extract"
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17 | //usage:
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18 | //usage:#define dpkg_deb_example_usage
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19 | //usage: "$ dpkg-deb -X ./busybox_0.48-1_i386.deb /tmp\n"
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20 |
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21 | #include "libbb.h"
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22 | #include "bb_archive.h"
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23 |
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24 | #define DPKG_DEB_OPT_CONTENTS 1
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25 | #define DPKG_DEB_OPT_CONTROL 2
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26 | #define DPKG_DEB_OPT_FIELD 4
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27 | #define DPKG_DEB_OPT_EXTRACT 8
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28 | #define DPKG_DEB_OPT_EXTRACT_VERBOSE 16
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29 |
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30 | int dpkg_deb_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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31 | int dpkg_deb_main(int argc, char **argv)
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32 | {
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33 | archive_handle_t *ar_archive;
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34 | archive_handle_t *tar_archive;
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35 | llist_t *control_tar_llist = NULL;
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36 | unsigned opt;
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37 | const char *extract_dir;
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38 | int need_args;
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39 |
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40 | /* Setup the tar archive handle */
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41 | tar_archive = init_handle();
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42 |
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43 | /* Setup an ar archive handle that refers to the gzip sub archive */
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44 | ar_archive = init_handle();
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45 | ar_archive->dpkg__sub_archive = tar_archive;
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46 | ar_archive->filter = filter_accept_list_reassign;
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47 |
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48 | #if ENABLE_FEATURE_SEAMLESS_GZ
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49 | llist_add_to(&ar_archive->accept, (char*)"data.tar.gz");
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50 | llist_add_to(&control_tar_llist, (char*)"control.tar.gz");
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51 | #endif
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52 | #if ENABLE_FEATURE_SEAMLESS_BZ2
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53 | llist_add_to(&ar_archive->accept, (char*)"data.tar.bz2");
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54 | llist_add_to(&control_tar_llist, (char*)"control.tar.bz2");
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55 | #endif
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56 | #if ENABLE_FEATURE_SEAMLESS_LZMA
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57 | llist_add_to(&ar_archive->accept, (char*)"data.tar.lzma");
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58 | llist_add_to(&control_tar_llist, (char*)"control.tar.lzma");
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59 | #endif
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60 |
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61 | opt_complementary = "c--efXx:e--cfXx:f--ceXx:X--cefx:x--cefX";
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62 | opt = getopt32(argv, "cefXx");
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63 | argv += optind;
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64 | argc -= optind;
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65 |
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66 | if (opt & DPKG_DEB_OPT_CONTENTS) {
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67 | tar_archive->action_header = header_verbose_list;
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68 | }
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69 | extract_dir = NULL;
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70 | need_args = 1;
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71 | if (opt & DPKG_DEB_OPT_CONTROL) {
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72 | ar_archive->accept = control_tar_llist;
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73 | tar_archive->action_data = data_extract_all;
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74 | if (1 == argc) {
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75 | extract_dir = "./DEBIAN";
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76 | } else {
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77 | need_args++;
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78 | }
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79 | }
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80 | if (opt & DPKG_DEB_OPT_FIELD) {
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81 | /* Print the entire control file
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82 | * it should accept a second argument which specifies a
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83 | * specific field to print */
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84 | ar_archive->accept = control_tar_llist;
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85 | llist_add_to(&(tar_archive->accept), (char*)"./control");
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86 | tar_archive->filter = filter_accept_list;
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87 | tar_archive->action_data = data_extract_to_stdout;
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88 | }
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89 | if (opt & DPKG_DEB_OPT_EXTRACT) {
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90 | tar_archive->action_header = header_list;
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91 | }
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92 | if (opt & (DPKG_DEB_OPT_EXTRACT_VERBOSE | DPKG_DEB_OPT_EXTRACT)) {
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93 | tar_archive->action_data = data_extract_all;
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94 | need_args = 2;
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95 | }
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96 |
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97 | if (need_args != argc) {
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98 | bb_show_usage();
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99 | }
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100 |
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101 | tar_archive->src_fd = ar_archive->src_fd = xopen(argv[0], O_RDONLY);
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102 |
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103 | /* Work out where to extract the files */
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104 | /* 2nd argument is a dir name */
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105 | if (argv[1]) {
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106 | extract_dir = argv[1];
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107 | }
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108 | if (extract_dir) {
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109 | mkdir(extract_dir, 0777); /* bb_make_directory(extract_dir, 0777, 0) */
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110 | xchdir(extract_dir);
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111 | }
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112 |
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113 | /* Do it */
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114 | unpack_ar_archive(ar_archive);
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115 |
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116 | /* Cleanup */
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117 | if (ENABLE_FEATURE_CLEAN_UP)
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118 | close(ar_archive->src_fd);
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119 |
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120 | return EXIT_SUCCESS;
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121 | }
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