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path: root/archival/libunarchive/check_header_gzip.c
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Diffstat (limited to 'archival/libunarchive/check_header_gzip.c')
-rw-r--r--archival/libunarchive/check_header_gzip.c59
1 files changed, 0 insertions, 59 deletions
diff --git a/archival/libunarchive/check_header_gzip.c b/archival/libunarchive/check_header_gzip.c
deleted file mode 100644
index 66aa574..0000000
--- a/archival/libunarchive/check_header_gzip.c
+++ /dev/null
@@ -1,59 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
- */
-
-#include "libbb.h"
-#include "unarchive.h" /* for external decl of check_header_gzip_or_die */
-
-void check_header_gzip_or_die(int src_fd)
-{
- union {
- unsigned char raw[8];
- struct {
- unsigned char method;
- unsigned char flags;
- unsigned int mtime;
- unsigned char xtra_flags;
- unsigned char os_flags;
- } formatted;
- } header;
-
- xread(src_fd, header.raw, 8);
-
- /* Check the compression method */
- if (header.formatted.method != 8) {
- bb_error_msg_and_die("unknown compression method %d",
- header.formatted.method);
- }
-
- if (header.formatted.flags & 0x04) {
- /* bit 2 set: extra field present */
- unsigned extra_short;
-
- extra_short = xread_char(src_fd) + (xread_char(src_fd) << 8);
- while (extra_short > 0) {
- /* Ignore extra field */
- xread_char(src_fd);
- extra_short--;
- }
- }
-
- /* Discard original name if any */
- if (header.formatted.flags & 0x08) {
- /* bit 3 set: original file name present */
- while (xread_char(src_fd) != 0);
- }
-
- /* Discard file comment if any */
- if (header.formatted.flags & 0x10) {
- /* bit 4 set: file comment present */
- while (xread_char(src_fd) != 0);
- }
-
- /* Read the header checksum */
- if (header.formatted.flags & 0x02) {
- xread_char(src_fd);
- xread_char(src_fd);
- }
-}