Merge commit '86cc97e55fe346502462284d2e636a2b3708163e' as 'Sources/OpenVPN3'

Sources/OpenVPN3/openvpn/win/unicode.hpp

@@ -0,0 +1,96 @@
+//    OpenVPN -- An application to securely tunnel IP networks
+//               over a single port, with support for SSL/TLS-based
+//               session authentication and key exchange,
+//               packet encryption, packet authentication, and
+//               packet compression.
+//
+//    Copyright (C) 2012-2017 OpenVPN Inc.
+//
+//    This program is free software: you can redistribute it and/or modify
+//    it under the terms of the GNU Affero General Public License Version 3
+//    as published by the Free Software Foundation.
+//
+//    This program is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//    GNU Affero General Public License for more details.
+//
+//    You should have received a copy of the GNU Affero General Public License
+//    along with this program in the COPYING file.
+//    If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef OPENVPN_WIN_UNICODE_H
+#define OPENVPN_WIN_UNICODE_H
+
+#include <windows.h>
+
+#include <string>
+#include <memory>
+
+#include <openvpn/common/size.hpp>
+#include <openvpn/common/exception.hpp>
+
+namespace openvpn {
+  namespace Win {
+    typedef std::unique_ptr<wchar_t[]> UTF16;
+    typedef std::unique_ptr<char[]> UTF8;
+
+    OPENVPN_SIMPLE_EXCEPTION(win_utf16);
+
+    inline wchar_t* utf16(const std::string& str, int cp=CP_UTF8)
+    {
+      // first get output length (return value includes space for trailing nul)
+      const int len = ::MultiByteToWideChar(cp,
+					    0,
+					    str.c_str(),
+					    -1,
+					    nullptr,
+					    0);
+      if (len <= 0)
+	throw win_utf16();
+      UTF16 ret(new wchar_t[len]);
+      const int len2 = ::MultiByteToWideChar(cp,
+					     0,
+					     str.c_str(),
+					     -1,
+					     ret.get(),
+					     len);
+      if (len != len2)
+	throw win_utf16();
+      return ret.release();
+    }
+
+    inline size_t utf16_strlen(const wchar_t *str)
+    {
+      return ::wcslen(str);
+    }
+
+    inline char* utf8(wchar_t* str)
+    {
+      // first get output length (return value includes space for trailing nul)
+      const int len = ::WideCharToMultiByte(CP_UTF8,
+					    0,
+					    str,
+					    -1,
+					    NULL,
+					    0,
+					    NULL,
+					    NULL);
+      if (len <= 0)
+	throw win_utf16();
+      UTF8 ret(new char[len]);
+      const int len2 = ::WideCharToMultiByte(CP_UTF8,
+					     0,
+					     str,
+					     -1,
+					     ret.get(),
+					     len,
+					     NULL,
+					     NULL);
+      if (len != len2)
+	throw win_utf16();
+      return ret.release();
+    }
+  }
+}
+#endif