mirror of
https://github.com/deneraraujo/OpenVPNAdapter.git
synced 2026-04-24 00:00:05 +08:00
Sergey Abramchuk
f65d76170b
git-subtree-dir: OpenVPN Adapter/Vendors/openvpn git-subtree-split: da99df69492256d7a18bbea303ae98457782a4bf
82 lines
2.5 KiB
C++
82 lines
2.5 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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#ifndef OPENVPN_TUN_PERSIST_TUNWRAPASIO_H
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#define OPENVPN_TUN_PERSIST_TUNWRAPASIO_H
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namespace openvpn {
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// This object supports that subset of the Asio stream
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// interface required by TunIO, and is intended to wrap
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// a ScopedAsioStream embedded in a TunWrap object.
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// It is used primarily on Windows to wrap the TAP
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// interface HANDLE in way that plays well with Windows
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// I/O completion ports (once a HANDLE is bound to an
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// I/O completion port it cannot be unbound).
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template <typename TunWrap>
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class TunWrapAsioStream
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{
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public:
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TunWrapAsioStream(const typename TunWrap::Ptr& tun_wrap_arg)
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: tun_wrap(tun_wrap_arg) {}
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void release()
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{
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tun_wrap.reset();
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}
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// Delegate STREAM methods (only need to support the
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// subset of methods used by TunIO).
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// Prototypes from asio/windows/basic_stream_handle.hpp
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template <typename MutableBufferSequence, typename ReadHandler>
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ASIO_INITFN_RESULT_TYPE(ReadHandler,
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void (openvpn_io::error_code, std::size_t))
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async_read_some(const MutableBufferSequence& buffers,
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ASIO_MOVE_ARG(ReadHandler) handler)
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{
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return tun_wrap->obj()->async_read_some(buffers, handler);
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}
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template <typename ConstBufferSequence>
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std::size_t write_some(const ConstBufferSequence& buffers)
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{
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return tun_wrap->obj()->write_some(buffers);
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}
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void cancel()
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{
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tun_wrap->obj()->cancel();
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}
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void close()
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{
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tun_wrap->obj()->close();
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}
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private:
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typename TunWrap::Ptr tun_wrap;
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};
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}
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#endif
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