1 files changed, 51 insertions, 0 deletions
diff --git a/archival/libunarchive/filter_accept_list_reassign.c b/archival/libunarchive/filter_accept_list_reassign.c
new file mode 100644
index 0000000..f1de4e8
--- /dev/null
+++ b/archival/libunarchive/filter_accept_list_reassign.c
@@ -0,0 +1,51 @@
+/* vi: set sw=4 ts=4: */
+/*
+ *  Copyright (C) 2002 by Glenn McGrath
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include "libbb.h"
+#include "unarchive.h"
+
+/* Built and used only if ENABLE_DPKG || ENABLE_DPKG_DEB */
+
+/*
+ * Reassign the subarchive metadata parser based on the filename extension
+ * e.g. if its a .tar.gz modify archive_handle->sub_archive to process a .tar.gz
+ * or if its a .tar.bz2 make archive_handle->sub_archive handle that
+ */
+char FAST_FUNC filter_accept_list_reassign(archive_handle_t *archive_handle)
+{
+	/* Check the file entry is in the accept list */
+	if (find_list_entry(archive_handle->accept, archive_handle->file_header->name)) {
+		const char *name_ptr;
+
+		/* Find extension */
+		name_ptr = strrchr(archive_handle->file_header->name, '.');
+		if (!name_ptr)
+			return EXIT_FAILURE;
+		name_ptr++;
+
+		/* Modify the subarchive handler based on the extension */
+		if (ENABLE_FEATURE_SEAMLESS_GZ
+		 && strcmp(name_ptr, "gz") == 0
+		) {
+			archive_handle->action_data_subarchive = get_header_tar_gz;
+			return EXIT_SUCCESS;
+		}
+		if (ENABLE_FEATURE_SEAMLESS_BZ2
+		 && strcmp(name_ptr, "bz2") == 0
+		) {
+			archive_handle->action_data_subarchive = get_header_tar_bz2;
+			return EXIT_SUCCESS;
+		}
+		if (ENABLE_FEATURE_SEAMLESS_LZMA
+		 && strcmp(name_ptr, "lzma") == 0
+		) {
+			archive_handle->action_data_subarchive = get_header_tar_lzma;
+			return EXIT_SUCCESS;
+		}
+	}
+	return EXIT_FAILURE;
+}