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