mirror of
https://github.com/sheumann/hush.git
synced 2024-08-15 02:29:00 +00:00
37 lines
955 B
C
37 lines
955 B
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
|
*/
|
|
|
|
#include "libbb.h"
|
|
#include "bb_archive.h"
|
|
|
|
char FAST_FUNC get_header_tar_gz(archive_handle_t *archive_handle)
|
|
{
|
|
#if BB_MMU
|
|
uint16_t magic;
|
|
#endif
|
|
|
|
/* Can't lseek over pipes */
|
|
archive_handle->seek = seek_by_read;
|
|
|
|
/* Check gzip magic only if open_transformer will invoke unpack_gz_stream (MMU case).
|
|
* Otherwise, it will invoke an external helper "gunzip -cf" (NOMMU case) which will
|
|
* need the header. */
|
|
#if BB_MMU
|
|
xread(archive_handle->src_fd, &magic, 2);
|
|
/* Can skip this check, but error message will be less clear */
|
|
if (magic != GZIP_MAGIC) {
|
|
bb_error_msg_and_die("invalid gzip magic");
|
|
}
|
|
#endif
|
|
|
|
open_transformer(archive_handle->src_fd, unpack_gz_stream, "gunzip");
|
|
archive_handle->offset = 0;
|
|
while (get_header_tar(archive_handle) == EXIT_SUCCESS)
|
|
continue;
|
|
|
|
/* Can only do one file at a time */
|
|
return EXIT_FAILURE;
|
|
}
|