diff options
author | Glenn L McGrath <bug1@ihug.co.nz> | 2002-09-25 06:47:48 +0400 |
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committer | Glenn L McGrath <bug1@ihug.co.nz> | 2002-09-25 06:47:48 +0400 |
commit | 7ca04f328e22fcbee4659d73f9a72dfdf1dd6a23 (patch) | |
tree | f38c7ef4317eea28c6abdb0adbbb286fe041711e /archival/dpkg_deb.c | |
parent | ecfa290cfd4953598e6d91989bd66ac16e135f84 (diff) |
New common unarchive code.
Diffstat (limited to 'archival/dpkg_deb.c')
-rw-r--r-- | archival/dpkg_deb.c | 139 |
1 files changed, 60 insertions, 79 deletions
diff --git a/archival/dpkg_deb.c b/archival/dpkg_deb.c index 29692f7d7..06a810cc1 100644 --- a/archival/dpkg_deb.c +++ b/archival/dpkg_deb.c @@ -13,119 +13,100 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - +#include <fcntl.h> #include <stdlib.h> #include <string.h> +#include <unistd.h> #include <getopt.h> #include "unarchive.h" #include "busybox.h" extern int dpkg_deb_main(int argc, char **argv) { - char *prefix = NULL; - char *filename = NULL; - char *output_buffer = NULL; + archive_handle_t *ar_archive; + archive_handle_t *tar_gz_archive; int opt = 0; - int arg_type = 0; - int deb_extract_funct = extract_create_leading_dirs | extract_unconditional; +#ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY + const llist_t *control_tar_gz_llist = add_to_list(NULL, "control.tar.gz"); +#endif +#ifndef CONFIG_AR + char magic[7]; +#endif + + /* a .deb file is an ar archive that contain three files, + * data.tar.gz, control.tar.gz and debian + */ - const int arg_type_prefix = 1; - const int arg_type_field = 2; - const int arg_type_filename = 4; -// const int arg_type_un_ar_gz = 8; + /* Setup the tar archive handle */ + tar_gz_archive = init_handle(); - while ((opt = getopt(argc, argv, "ceftXxI")) != -1) { + /* Setup an ar archive handle that refers to the gzip sub archive */ + ar_archive = init_handle(); + ar_archive->action_data_subarchive = get_header_tar_gz; + ar_archive->sub_archive = tar_gz_archive; + ar_archive->filter = filter_accept_list; + ar_archive->accept = add_to_list(NULL, "data.tar.gz"); + +#ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY + while ((opt = getopt(argc, argv, "cefXx")) != -1) { +#else + while ((opt = getopt(argc, argv, "x")) != -1) { +#endif switch (opt) { +#ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY case 'c': - deb_extract_funct |= extract_data_tar_gz; - deb_extract_funct |= extract_verbose_list; + tar_gz_archive->action_header = header_verbose_list; break; case 'e': - arg_type = arg_type_prefix; - deb_extract_funct |= extract_control_tar_gz; - deb_extract_funct |= extract_all_to_fs; + ar_archive->accept = control_tar_gz_llist; + tar_gz_archive->action_data = data_extract_all; break; case 'f': - arg_type = arg_type_field; - deb_extract_funct |= extract_control_tar_gz; - deb_extract_funct |= extract_one_to_buffer; - filename = xstrdup("./control"); - break; - case 't': /* --fsys-tarfile, i just made up this short name */ - /* Integrate the functionality needed with some code from ar.c */ - error_msg_and_die("Option disabled"); -// arg_type = arg_type_un_ar_gz; + /* Print the entire control file + * it should accept a second argument which specifies a + * specific field to print */ + ar_archive->accept = control_tar_gz_llist; + tar_gz_archive->accept = add_to_list(NULL, "./control");; + tar_gz_archive->filter = filter_accept_list; + tar_gz_archive->action_data = data_extract_to_stdout; break; case 'X': - arg_type = arg_type_prefix; - deb_extract_funct |= extract_data_tar_gz; - deb_extract_funct |= extract_all_to_fs; - deb_extract_funct |= extract_list; + tar_gz_archive->action_header = header_list; +#endif case 'x': - arg_type = arg_type_prefix; - deb_extract_funct |= extract_data_tar_gz; - deb_extract_funct |= extract_all_to_fs; - break; - case 'I': - arg_type = arg_type_filename; - deb_extract_funct |= extract_control_tar_gz; - deb_extract_funct |= extract_one_to_buffer; + tar_gz_archive->action_data = data_extract_all; break; default: show_usage(); } } - if (optind == argc) { + if (optind + 2 < argc) { show_usage(); } + tar_gz_archive->src_fd = ar_archive->src_fd = xopen(argv[optind++], O_RDONLY); + /* Workout where to extract the files */ - if (arg_type == arg_type_prefix) { - /* argument is a dir name */ - if ((optind + 1) == argc ) { - prefix = xstrdup("./DEBIAN/"); - } else { - prefix = (char *) xmalloc(strlen(argv[optind + 1]) + 2); - strcpy(prefix, argv[optind + 1]); - /* Make sure the directory has a trailing '/' */ - if (last_char_is(prefix, '/') == NULL) { - strcat(prefix, "/"); - } - } - mkdir(prefix, 0777); - } + /* 2nd argument is a dir name */ + mkdir(argv[optind], 0777); + chdir(argv[optind]); - if (arg_type == arg_type_filename) { - if ((optind + 1) != argc) { - filename = xstrdup(argv[optind + 1]); - } else { - error_msg_and_die("-I currently requires a filename to be specified"); - } +#ifdef CONFIG_AR + unpack_ar_archive(ar_archive); +#else + xread_all(ar_archive->src_fd, magic, 7); + if (strncmp(magic, "!<arch>", 7) != 0) { + error_msg_and_die("Invalid ar magic"); } + ar_archive->offset += 7; - output_buffer = deb_extract(argv[optind], stdout, deb_extract_funct, prefix, filename); + while (get_header_ar(ar_archive) == EXIT_SUCCESS); +#endif - if ((arg_type == arg_type_filename) && (output_buffer != NULL)) { - puts(output_buffer); - } - else if (arg_type == arg_type_field) { - char *field = NULL; - char *name; - char *value; - int field_start = 0; - - while (1) { - field_start += read_package_field(&output_buffer[field_start], &name, &value); - if (name == NULL) { - break; - } - if (strcmp(name, argv[optind + 1]) == 0) { - puts(value); - } - free(field); - } - } + /* Cleanup */ + close (ar_archive->src_fd); return(EXIT_SUCCESS); } + |