mirror of
https://github.com/OpenVPN/openvpn3.git
synced 2024-09-20 04:02:15 +02:00
b2cd82a5bf
Signed-off-by: James Yonan <james@openvpn.net>
126 lines
2.6 KiB
C++
126 lines
2.6 KiB
C++
// OpenVPN -- An application to securely tunnel IP networks
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// over a single port, with support for SSL/TLS-based
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// session authentication and key exchange,
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// packet encryption, packet authentication, and
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// packet compression.
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//
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// Copyright (C) 2012-2017 OpenVPN Technologies, Inc.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License Version 3
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// as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program in the COPYING file.
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// If not, see <http://www.gnu.org/licenses/>.
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// scoped HANDLE for windows
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#ifndef OPENVPN_WIN_SCOPED_HANDLE_H
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#define OPENVPN_WIN_SCOPED_HANDLE_H
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#include <windows.h>
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#include <openvpn/common/size.hpp>
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#include <openvpn/win/handle.hpp>
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namespace openvpn {
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namespace Win {
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class ScopedHANDLE
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{
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ScopedHANDLE(const ScopedHANDLE&) = delete;
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ScopedHANDLE& operator=(const ScopedHANDLE&) = delete;
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public:
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typedef HANDLE base_type;
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ScopedHANDLE() : handle(Handle::undefined()) {}
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explicit ScopedHANDLE(HANDLE h)
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: handle(h) {}
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HANDLE release()
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{
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const HANDLE ret = handle;
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handle = nullptr;
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return ret;
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}
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bool defined() const
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{
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return Handle::defined(handle);
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}
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HANDLE operator()() const
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{
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return handle;
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}
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HANDLE* ref()
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{
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return &handle;
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}
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void reset(HANDLE h)
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{
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close();
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handle = h;
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}
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void reset()
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{
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close();
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}
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// unusual semantics: replace handle without closing it first
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void replace(HANDLE h)
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{
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handle = h;
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}
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bool close()
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{
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if (defined())
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{
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const BOOL ret = ::CloseHandle(handle);
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//OPENVPN_LOG("**** SH CLOSE hand=" << handle << " ret=" << ret);
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handle = nullptr;
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return ret != 0;
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}
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else
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return true;
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}
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~ScopedHANDLE()
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{
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close();
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}
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ScopedHANDLE(ScopedHANDLE&& other) noexcept
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{
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handle = other.handle;
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other.handle = nullptr;
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}
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ScopedHANDLE& operator=(ScopedHANDLE&& other) noexcept
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{
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close();
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handle = other.handle;
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other.handle = nullptr;
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return *this;
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}
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private:
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HANDLE handle;
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};
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}
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}
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#endif
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