keyed object directory interfaces: added ntapi_tt_keyed_object_to_key().

1 files changed, 33 insertions, 0 deletions

diff --git a/src/object/ntapi_tt_keyed_object_directory.c b/src/object/ntapi_tt_keyed_object_directory.c
index 705eec9..988ed00 100644
--- a/src/object/ntapi_tt_keyed_object_directory.c
+++ b/src/object/ntapi_tt_keyed_object_directory.c
@@ -388,3 +388,36 @@ int32_t __stdcall __ntapi_tt_create_keyed_object_directory_entry(
 		hentry,desired_access,
 		hdir,htarget,target_name,key);
 }
+
+int32_t __stdcall __ntapi_tt_keyed_object_to_key(
+	__in	void *			hentry,
+	__out	uint32_t *		key,
+	__out	void *			buffer,
+	__in	size_t			buflen)
+{
+	int32_t			status;
+	wchar16_t *		pidname;
+	nt_unicode_string *	dirname;
+
+	if ((status = __ntapi->zw_query_object(
+			hentry,
+			NT_OBJECT_NAME_INFORMATION,
+			buffer,buflen,
+			&(uint32_t){0})))
+		return status;
+
+	dirname = (nt_unicode_string *)buffer;
+	pidname = dirname->buffer;
+
+	if (dirname->strlen <= 8 * sizeof(wchar16_t))
+		return NT_STATUS_INTERNAL_ERROR;
+
+	pidname += dirname->strlen / sizeof(wchar16_t);
+	pidname -= 8;
+
+	if (pidname[-1] != '\\')
+		return NT_STATUS_INVALID_PARAMETER;
+
+	return __ntapi->tt_hex_utf16_to_uint32(
+		pidname,key);
+}