| 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 | #include "libbb.h"
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| 8 | #include "archive.h"
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| 9 |
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| 10 | #define DPKG_DEB_OPT_CONTENTS 1
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| 11 | #define DPKG_DEB_OPT_CONTROL 2
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| 12 | #define DPKG_DEB_OPT_FIELD 4
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| 13 | #define DPKG_DEB_OPT_EXTRACT 8
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| 14 | #define DPKG_DEB_OPT_EXTRACT_VERBOSE 16
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| 15 |
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| 16 | int dpkg_deb_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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| 17 | int dpkg_deb_main(int argc, char **argv)
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| 18 | {
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| 19 | archive_handle_t *ar_archive;
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| 20 | archive_handle_t *tar_archive;
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| 21 | llist_t *control_tar_llist = NULL;
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| 22 | unsigned opt;
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| 23 | const char *extract_dir;
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| 24 | int need_args;
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| 25 |
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| 26 | /* Setup the tar archive handle */
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| 27 | tar_archive = init_handle();
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| 28 |
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| 29 | /* Setup an ar archive handle that refers to the gzip sub archive */
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| 30 | ar_archive = init_handle();
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| 31 | ar_archive->dpkg__sub_archive = tar_archive;
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| 32 | ar_archive->filter = filter_accept_list_reassign;
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| 33 |
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| 34 | #if ENABLE_FEATURE_SEAMLESS_GZ
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| 35 | llist_add_to(&ar_archive->accept, (char*)"data.tar.gz");
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| 36 | llist_add_to(&control_tar_llist, (char*)"control.tar.gz");
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| 37 | #endif
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| 38 | #if ENABLE_FEATURE_SEAMLESS_BZ2
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| 39 | llist_add_to(&ar_archive->accept, (char*)"data.tar.bz2");
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| 40 | llist_add_to(&control_tar_llist, (char*)"control.tar.bz2");
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| 41 | #endif
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| 42 | #if ENABLE_FEATURE_SEAMLESS_LZMA
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| 43 | llist_add_to(&ar_archive->accept, (char*)"data.tar.lzma");
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| 44 | llist_add_to(&control_tar_llist, (char*)"control.tar.lzma");
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| 45 | #endif
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| 46 |
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| 47 | opt_complementary = "c--efXx:e--cfXx:f--ceXx:X--cefx:x--cefX";
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| 48 | opt = getopt32(argv, "cefXx");
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| 49 | argv += optind;
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| 50 | argc -= optind;
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| 51 |
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| 52 | if (opt & DPKG_DEB_OPT_CONTENTS) {
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| 53 | tar_archive->action_header = header_verbose_list;
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| 54 | }
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| 55 | extract_dir = NULL;
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| 56 | need_args = 1;
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| 57 | if (opt & DPKG_DEB_OPT_CONTROL) {
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| 58 | ar_archive->accept = control_tar_llist;
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| 59 | tar_archive->action_data = data_extract_all;
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| 60 | if (1 == argc) {
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| 61 | extract_dir = "./DEBIAN";
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| 62 | } else {
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| 63 | need_args++;
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| 64 | }
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| 65 | }
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| 66 | if (opt & DPKG_DEB_OPT_FIELD) {
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| 67 | /* Print the entire control file
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| 68 | * it should accept a second argument which specifies a
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| 69 | * specific field to print */
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| 70 | ar_archive->accept = control_tar_llist;
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| 71 | llist_add_to(&(tar_archive->accept), (char*)"./control");
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| 72 | tar_archive->filter = filter_accept_list;
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| 73 | tar_archive->action_data = data_extract_to_stdout;
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| 74 | }
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| 75 | if (opt & DPKG_DEB_OPT_EXTRACT) {
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| 76 | tar_archive->action_header = header_list;
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| 77 | }
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| 78 | if (opt & (DPKG_DEB_OPT_EXTRACT_VERBOSE | DPKG_DEB_OPT_EXTRACT)) {
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| 79 | tar_archive->action_data = data_extract_all;
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| 80 | need_args = 2;
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| 81 | }
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| 82 |
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| 83 | if (need_args != argc) {
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| 84 | bb_show_usage();
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| 85 | }
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| 86 |
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| 87 | tar_archive->src_fd = ar_archive->src_fd = xopen(argv[0], O_RDONLY);
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| 88 |
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| 89 | /* Work out where to extract the files */
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| 90 | /* 2nd argument is a dir name */
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| 91 | if (argv[1]) {
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| 92 | extract_dir = argv[1];
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| 93 | }
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| 94 | if (extract_dir) {
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| 95 | mkdir(extract_dir, 0777); /* bb_make_directory(extract_dir, 0777, 0) */
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| 96 | xchdir(extract_dir);
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| 97 | }
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| 98 |
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| 99 | /* Do it */
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| 100 | unpack_ar_archive(ar_archive);
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| 101 |
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| 102 | /* Cleanup */
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| 103 | if (ENABLE_FEATURE_CLEAN_UP)
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| 104 | close(ar_archive->src_fd);
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| 105 |
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| 106 | return EXIT_SUCCESS;
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| 107 | }
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