[821] | 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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[2725] | 5 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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[821] | 6 | */
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[3232] | 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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[1765] | 21 | #include "libbb.h"
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[3232] | 22 | #include "bb_archive.h"
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[821] | 23 |
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[2725] | 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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[821] | 29 |
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[2725] | 30 | int dpkg_deb_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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[821] | 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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[1765] | 36 | unsigned opt;
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[2725] | 37 | const char *extract_dir;
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| 38 | int need_args;
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[821] | 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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[2725] | 45 | ar_archive->dpkg__sub_archive = tar_archive;
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[821] | 46 | ar_archive->filter = filter_accept_list_reassign;
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| 47 |
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[2725] | 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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[1765] | 50 | llist_add_to(&control_tar_llist, (char*)"control.tar.gz");
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[821] | 51 | #endif
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[2725] | 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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[1765] | 54 | llist_add_to(&control_tar_llist, (char*)"control.tar.bz2");
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[821] | 55 | #endif
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[2725] | 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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[821] | 60 |
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[2725] | 61 | opt_complementary = "c--efXx:e--cfXx:f--ceXx:X--cefx:x--cefX";
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[1765] | 62 | opt = getopt32(argv, "cefXx");
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[2725] | 63 | argv += optind;
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| 64 | argc -= optind;
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[821] | 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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[2725] | 69 | extract_dir = NULL;
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| 70 | need_args = 1;
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[821] | 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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[2725] | 74 | if (1 == argc) {
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[821] | 75 | extract_dir = "./DEBIAN";
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| 76 | } else {
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[2725] | 77 | need_args++;
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[821] | 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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[1765] | 85 | llist_add_to(&(tar_archive->accept), (char*)"./control");
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[821] | 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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[2725] | 94 | need_args = 2;
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[821] | 95 | }
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| 96 |
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[2725] | 97 | if (need_args != argc) {
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[821] | 98 | bb_show_usage();
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| 99 | }
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| 100 |
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[2725] | 101 | tar_archive->src_fd = ar_archive->src_fd = xopen(argv[0], O_RDONLY);
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[821] | 102 |
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[2725] | 103 | /* Work out where to extract the files */
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[821] | 104 | /* 2nd argument is a dir name */
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[2725] | 105 | if (argv[1]) {
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| 106 | extract_dir = argv[1];
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[821] | 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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[1765] | 110 | xchdir(extract_dir);
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[821] | 111 | }
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[2725] | 112 |
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| 113 | /* Do it */
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[821] | 114 | unpack_ar_archive(ar_archive);
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| 115 |
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| 116 | /* Cleanup */
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[2725] | 117 | if (ENABLE_FEATURE_CLEAN_UP)
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| 118 | close(ar_archive->src_fd);
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[821] | 119 |
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[1765] | 120 | return EXIT_SUCCESS;
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[821] | 121 | }
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