mirror of
https://github.com/amnezia-vpn/OpenVPNAdapter.git
synced 2026-06-22 18:17:18 +03:00
80 lines
2.5 KiB
C++
80 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) 2012-2020 OpenVPN 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 Affero 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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero 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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#pragma once
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#include <windows.h>
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#include <openvpn/buffer/bufhex.hpp>
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#include <openvpn/win/winerr.hpp>
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namespace openvpn {
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namespace Win {
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namespace HandleComm {
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OPENVPN_EXCEPTION(handle_comm);
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// Duplicate a local handle into the address space of a
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// remote process and return as a hex string that can be
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// communicated across a process boundary.
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inline std::string send_handle(const HANDLE handle,
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const HANDLE remote_process)
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{
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HANDLE remote_handle;
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if (!::DuplicateHandle(GetCurrentProcess(),
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handle,
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remote_process,
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&remote_handle,
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0,
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FALSE,
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DUPLICATE_SAME_ACCESS))
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{
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const Win::LastError err;
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OPENVPN_THROW(handle_comm, "send_handle: DuplicateHandle failed: " << err.message());
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}
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return BufHex::render(remote_handle);
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}
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// Duplicate a remote handle (specified as a hex string) into
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// the address space of the local process.
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inline HANDLE receive_handle(const std::string& remote_handle_hex,
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const HANDLE remote_process)
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{
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const HANDLE remote_handle = BufHex::parse<HANDLE>(remote_handle_hex, "receive_handle");
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HANDLE local_handle;
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if (!::DuplicateHandle(remote_process,
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remote_handle,
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GetCurrentProcess(),
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&local_handle,
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0,
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FALSE,
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DUPLICATE_SAME_ACCESS))
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{
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const Win::LastError err;
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OPENVPN_THROW(handle_comm, "receive_handle: DuplicateHandle failed: " << err.message());
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}
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return local_handle;
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}
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}
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}
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}
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