diff options
Diffstat (limited to 'archival/dpkg_deb.c')
-rw-r--r-- | archival/dpkg_deb.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/archival/dpkg_deb.c b/archival/dpkg_deb.c new file mode 100644 index 0000000..f94c90c --- /dev/null +++ b/archival/dpkg_deb.c @@ -0,0 +1,104 @@ +/* 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 tarball for details. + */ +#include "libbb.h" +#include "unarchive.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->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 + + 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; +} |