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-rw-r--r--archival/dpkg_deb.c139
1 files changed, 60 insertions, 79 deletions
diff --git a/archival/dpkg_deb.c b/archival/dpkg_deb.c
index 29692f7..06a810c 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);
}
+