From 43c90fc4001b6a8b509e5312a80054dca6bd956f Mon Sep 17 00:00:00 2001
From: Egor Tensin <Egor.Tensin@gmail.com>
Date: Mon, 11 May 2015 13:33:34 +0300
Subject: add libnt_path_converter

---
 utils/libnt_path_converter/src/device.cpp | 50 +++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 utils/libnt_path_converter/src/device.cpp

(limited to 'utils/libnt_path_converter/src')

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());
+    }
+}
-- 
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