c26f2e036d6bf3e9471796bc23764002ccfc4eee
[oweals/busybox.git] / archival / libunarchive / filter_accept_list_reassign.c
1 /* vi: set sw=4 ts=4: */
2 /*
3  *  Copyright (C) 2002 by Glenn McGrath
4  *
5  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
6  */
7
8 #include <stdlib.h>
9 #include <string.h>
10 #include <unistd.h>
11
12 #include "libbb.h"
13 #include "unarchive.h"
14
15 /*
16  *      Reassign the subarchive metadata parser based on the filename extension
17  *  e.g. if its a .tar.gz modify archive_handle->sub_archive to process a .tar.gz
18  *       or if its a .tar.bz2 make archive_handle->sub_archive handle that
19  */
20 char filter_accept_list_reassign(archive_handle_t *archive_handle)
21 {
22         /* Check the file entry is in the accept list */
23         if (find_list_entry(archive_handle->accept, archive_handle->file_header->name)) {
24                 const char *name_ptr;
25
26                 /* Extract the last 2 extensions */
27                 name_ptr = strrchr(archive_handle->file_header->name, '.');
28
29                 /* Modify the subarchive handler based on the extension */
30 #ifdef CONFIG_FEATURE_DEB_TAR_GZ
31                 if (strcmp(name_ptr, ".gz") == 0) {
32                         archive_handle->action_data_subarchive = get_header_tar_gz;
33                         return(EXIT_SUCCESS);
34                 }
35 #endif
36 #ifdef CONFIG_FEATURE_DEB_TAR_BZ2
37                 if (strcmp(name_ptr, ".bz2") == 0) {
38                         archive_handle->action_data_subarchive = get_header_tar_bz2;
39                         return(EXIT_SUCCESS);
40                 }
41 #endif
42                 if (ENABLE_FEATURE_DEB_TAR_LZMA && !strcmp(name_ptr, ".lzma")) {
43                         archive_handle->action_data_subarchive = get_header_tar_lzma;
44                         return(EXIT_SUCCESS);
45                 }
46         }
47         return(EXIT_FAILURE);
48 }