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    Contents of /trunk/mkinitrd-magellan/busybox/archival/dpkg_deb.c

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    Revision 1123 - (show annotations) (download)
    Wed Aug 18 21:56:57 2010 UTC (13 years, 8 months ago) by niro
    File MIME type: text/plain
    File size: 2955 byte(s) 
    -updated to busybox-1.17.1
    1 /* vi: set sw=4 ts=4: */
    2 /*
    3 * dpkg-deb packs, unpacks and provides information about Debian archives.
    4 *
    5 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
    6 */
    7 #include "libbb.h"
    8 #include "unarchive.h"
    9
    10 #define DPKG_DEB_OPT_CONTENTS 1
    11 #define DPKG_DEB_OPT_CONTROL 2
    12 #define DPKG_DEB_OPT_FIELD 4
    13 #define DPKG_DEB_OPT_EXTRACT 8
    14 #define DPKG_DEB_OPT_EXTRACT_VERBOSE 16
    15
    16 int dpkg_deb_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
    17 int dpkg_deb_main(int argc, char **argv)
    18 {
    19 archive_handle_t *ar_archive;
    20 archive_handle_t *tar_archive;
    21 llist_t *control_tar_llist = NULL;
    22 unsigned opt;
    23 const char *extract_dir;
    24 int need_args;
    25
    26 /* Setup the tar archive handle */
    27 tar_archive = init_handle();
    28
    29 /* Setup an ar archive handle that refers to the gzip sub archive */
    30 ar_archive = init_handle();
    31 ar_archive->dpkg__sub_archive = tar_archive;
    32 ar_archive->filter = filter_accept_list_reassign;
    33
    34 #if ENABLE_FEATURE_SEAMLESS_GZ
    35 llist_add_to(&ar_archive->accept, (char*)"data.tar.gz");
    36 llist_add_to(&control_tar_llist, (char*)"control.tar.gz");
    37 #endif
    38 #if ENABLE_FEATURE_SEAMLESS_BZ2
    39 llist_add_to(&ar_archive->accept, (char*)"data.tar.bz2");
    40 llist_add_to(&control_tar_llist, (char*)"control.tar.bz2");
    41 #endif
    42 #if ENABLE_FEATURE_SEAMLESS_LZMA
    43 llist_add_to(&ar_archive->accept, (char*)"data.tar.lzma");
    44 llist_add_to(&control_tar_llist, (char*)"control.tar.lzma");
    45 #endif
    46
    47 opt_complementary = "c--efXx:e--cfXx:f--ceXx:X--cefx:x--cefX";
    48 opt = getopt32(argv, "cefXx");
    49 argv += optind;
    50 argc -= optind;
    51
    52 if (opt & DPKG_DEB_OPT_CONTENTS) {
    53 tar_archive->action_header = header_verbose_list;
    54 }
    55 extract_dir = NULL;
    56 need_args = 1;
    57 if (opt & DPKG_DEB_OPT_CONTROL) {
    58 ar_archive->accept = control_tar_llist;
    59 tar_archive->action_data = data_extract_all;
    60 if (1 == argc) {
    61 extract_dir = "./DEBIAN";
    62 } else {
    63 need_args++;
    64 }
    65 }
    66 if (opt & DPKG_DEB_OPT_FIELD) {
    67 /* Print the entire control file
    68 * it should accept a second argument which specifies a
    69 * specific field to print */
    70 ar_archive->accept = control_tar_llist;
    71 llist_add_to(&(tar_archive->accept), (char*)"./control");
    72 tar_archive->filter = filter_accept_list;
    73 tar_archive->action_data = data_extract_to_stdout;
    74 }
    75 if (opt & DPKG_DEB_OPT_EXTRACT) {
    76 tar_archive->action_header = header_list;
    77 }
    78 if (opt & (DPKG_DEB_OPT_EXTRACT_VERBOSE | DPKG_DEB_OPT_EXTRACT)) {
    79 tar_archive->action_data = data_extract_all;
    80 need_args = 2;
    81 }
    82
    83 if (need_args != argc) {
    84 bb_show_usage();
    85 }
    86
    87 tar_archive->src_fd = ar_archive->src_fd = xopen(argv[0], O_RDONLY);
    88
    89 /* Work out where to extract the files */
    90 /* 2nd argument is a dir name */
    91 if (argv[1]) {
    92 extract_dir = argv[1];
    93 }
    94 if (extract_dir) {
    95 mkdir(extract_dir, 0777); /* bb_make_directory(extract_dir, 0777, 0) */
    96 xchdir(extract_dir);
    97 }
    98
    99 /* Do it */
    100 unpack_ar_archive(ar_archive);
    101
    102 /* Cleanup */
    103 if (ENABLE_FEATURE_CLEAN_UP)
    104 close(ar_archive->src_fd);
    105
    106 return EXIT_SUCCESS;
    107 }