1 files changed, 41 insertions, 0 deletions
diff --git a/api/registry.h b/api/registry.h
new file mode 100644
index 0000000..82d0b42
--- /dev/null
+++ b/api/registry.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2018-2020 WireGuard LLC. All Rights Reserved.
+ */
+
+#pragma once
+
+#include "api.h"
+
+#define MAX_REG_PATH \
+    256 /* Maximum registry path length \
+           https://support.microsoft.com/en-us/help/256986/windows-registry-information-for-advanced-users */
+
+WINTUN_STATUS
+RegistryOpenKeyWait(
+    _In_ HKEY Key,
+    _In_z_count_c_(MAX_REG_PATH) const WCHAR *Path,
+    _In_ DWORD Access,
+    _In_ DWORD Timeout,
+    _Out_ HKEY *KeyOut);
+
+WINTUN_STATUS
+RegistryWaitForKey(_In_ HKEY Key, _In_z_count_c_(MAX_REG_PATH) const WCHAR *Path, _In_ DWORD Timeout);
+
+WINTUN_STATUS
+RegistryGetString(_Inout_ WCHAR **Buf, _In_ DWORD Len, _In_ DWORD ValueType);
+
+WINTUN_STATUS
+RegistryGetMultiString(_Inout_ WCHAR **Buf, _In_ DWORD Len, _In_ DWORD ValueType);
+
+WINTUN_STATUS
+RegistryQueryString(_In_ HKEY Key, _In_opt_z_ const WCHAR *Name, _Out_ WCHAR **Value);
+
+WINTUN_STATUS
+RegistryQueryStringWait(_In_ HKEY Key, _In_opt_z_ const WCHAR *Name, _In_ DWORD Timeout, _Out_ WCHAR **Value);
+
+WINTUN_STATUS
+RegistryQueryDWORD(_In_ HKEY Key, _In_opt_z_ const WCHAR *Name, _Out_ DWORD *Value);
+
+WINTUN_STATUS
+RegistryQueryDWORDWait(_In_ HKEY Key, _In_opt_z_ const WCHAR *Name, _In_ DWORD Timeout, _Out_ DWORD *Value);