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mirror of https://github.com/OpenVPN/openvpn3.git synced 2024-09-20 04:02:15 +02:00
openvpn3/openvpn/win/handlecomm.hpp
David Sommerseth dde1574596
Reformatting source code to new coding style
This is the result after running 'clang-format -i' on all C++ files and
headers, with the defined formatting rules in .clang-format.

Only the openvpn/common/unicode-impl.hpp has been excluded, as that is
mostly a copy of an external project.

Signed-off-by: David Sommerseth <davids@openvpn.net>
2023-01-18 19:24:15 +01:00

80 lines
2.8 KiB
C++

// 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) 2012-2022 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/>.
#pragma once
#include <windows.h>
#include <openvpn/buffer/bufhex.hpp>
#include <openvpn/win/winerr.hpp>
namespace openvpn {
namespace Win {
namespace HandleComm {
OPENVPN_EXCEPTION(handle_comm);
// Duplicate a local handle into the address space of a
// remote process and return as a hex string that can be
// communicated across a process boundary.
inline std::string send_handle(const HANDLE handle,
const HANDLE remote_process)
{
HANDLE remote_handle;
if (!::DuplicateHandle(GetCurrentProcess(),
handle,
remote_process,
&remote_handle,
0,
FALSE,
DUPLICATE_SAME_ACCESS))
{
const Win::LastError err;
OPENVPN_THROW(handle_comm, "send_handle: DuplicateHandle failed: " << err.message());
}
return BufHex::render(remote_handle);
}
// Duplicate a remote handle (specified as a hex string) into
// the address space of the local process.
inline HANDLE receive_handle(const std::string &remote_handle_hex,
const HANDLE remote_process)
{
const HANDLE remote_handle = BufHex::parse<HANDLE>(remote_handle_hex, "receive_handle");
HANDLE local_handle;
if (!::DuplicateHandle(remote_process,
remote_handle,
GetCurrentProcess(),
&local_handle,
0,
FALSE,
DUPLICATE_SAME_ACCESS))
{
const Win::LastError err;
OPENVPN_THROW(handle_comm, "receive_handle: DuplicateHandle failed: " << err.message());
}
return local_handle;
}
} // namespace HandleComm
} // namespace Win
} // namespace openvpn