diff options
Diffstat (limited to 'archival/libarchive/get_header_tar.c')
| -rw-r--r-- | archival/libarchive/get_header_tar.c | 35 |
1 files changed, 5 insertions, 30 deletions
diff --git a/archival/libarchive/get_header_tar.c b/archival/libarchive/get_header_tar.c index 8c699754b..80a709144 100644 --- a/archival/libarchive/get_header_tar.c +++ b/archival/libarchive/get_header_tar.c @@ -235,43 +235,18 @@ char FAST_FUNC get_header_tar(archive_handle_t *archive_handle) || memcmp(tar.magic, "\0\0\0\0", 5) != 0) ) { #if ENABLE_FEATURE_TAR_AUTODETECT - char FAST_FUNC (*get_header_ptr)(archive_handle_t *); - uint16_t magic2; - autodetect: - magic2 = *(bb__aliased_uint16_t*)tar.name; - /* tar gz/bz autodetect: check for gz/bz2 magic. - * If we see the magic, and it is the very first block, - * we can switch to get_header_tar_gz/bz2/lzma(). - * Needs seekable fd. I wish recv(MSG_PEEK) works - * on any fd... */ -# if ENABLE_FEATURE_SEAMLESS_GZ - if (magic2 == GZIP_MAGIC) { - get_header_ptr = get_header_tar_gz; - } else -# endif -# if ENABLE_FEATURE_SEAMLESS_BZ2 - if (magic2 == BZIP2_MAGIC - && tar.name[2] == 'h' && isdigit(tar.name[3]) - ) { /* bzip2 */ - get_header_ptr = get_header_tar_bz2; - } else -# endif -# if ENABLE_FEATURE_SEAMLESS_XZ - //TODO: if (magic2 == XZ_MAGIC1)... - //else -# endif - goto err; /* Two different causes for lseek() != 0: * unseekable fd (would like to support that too, but...), * or not first block (false positive, it's not .gz/.bz2!) */ if (lseek(archive_handle->src_fd, -i, SEEK_CUR) != 0) goto err; - while (get_header_ptr(archive_handle) == EXIT_SUCCESS) - continue; - return EXIT_FAILURE; + if (setup_unzip_on_fd(archive_handle->src_fd, /*fail_if_not_detected:*/ 0) != 0) err: -#endif /* FEATURE_TAR_AUTODETECT */ + bb_error_msg_and_die("invalid tar magic"); + archive_handle->offset = 0; + goto again_after_align; +#endif bb_error_msg_and_die("invalid tar magic"); } |