add libnt_path_converter

1 files changed, 50 insertions, 0 deletions

diff --git a/utils/libnt_path_converter/src/device.cpp b/utils/libnt_path_converter/src/device.cpp
new file mode 100644
index 0000000..7fc8c99
--- /dev/null
+++ b/utils/libnt_path_converter/src/device.cpp
@@ -0,0 +1,50 @@
+/**
+ * \file
+ * \author Egor Tensin <Egor.Tensin@gmail.com>
+ * \date 2015
+ * \copyright This file is licensed under the terms of the MIT License.
+ *            See LICENSE.txt for details.
+ */
+
+#include "libnt_path_converter/device.hpp"
+
+#include "libservice/interface.hpp"
+
+#include <Windows.h>
+
+#include <string>
+#include <vector>
+
+namespace libnt_path_converter
+{
+    namespace
+    {
+        const char* const device_path = "\\\\.\\nt_path_converter";
+        const auto control_code = CTL_CODE(0x8000, 0x800, METHOD_BUFFERED, FILE_ANY_ACCESS);
+    }
+
+    Device::Device()
+        : libservice::Device(libservice::Device::open(device_path))
+    { }
+
+    std::wstring Device::convert_nt_path(const std::wstring& src)
+    {
+        const auto in_buf = src.c_str();
+        const auto in_buf_size = (src.size() + 1) * sizeof(wchar_t);
+
+        DWORD nbreq = get_required_output_size(
+            control_code,
+            in_buf,
+            in_buf_size);
+
+        std::vector<unsigned char> output(nbreq);
+
+        send_control_code(control_code,
+                          in_buf,
+                          in_buf_size,
+                          output.data(),
+                          nbreq);
+
+        return reinterpret_cast<wchar_t*>(output.data());
+    }
+}