mirror of
https://github.com/OpenVPN/openvpn3.git
synced 2024-09-20 20:13:05 +02:00
691a641a43
Created a lightweight abstraction layer so that another i/o reactor can be dropped in place of asio. The basic approach is to rename all references to asio::xxx types to openvpn_io::xxx and then make openvpn_io a preprocessor variable that points to the top-level namespace of the i/o reactor implementation. All of the source files that currently include <asio.hpp> now include <openvpn/io/io.hpp> instead: This gives us a lightweight abstraction layer that allows us to define openvpn_io to be something other than asio. Other changes: * Inclusion of asio by scripts/build is now optional, and is enabled by passing ASIO=1 or ASIO_DIR=<dir>. * Refactored openvpn/common/socktypes.hpp to no longer require asio. * Refactored openvpn/log/logthread.hpp to no longer require asio. * Added openvpn::get_hostname() method as alternative to calling asio directly. * openvpn/openssl/util/init.hpp will now #error if USE_ASIO is undefined. Signed-off-by: James Yonan <james@openvpn.net>
106 lines
2.7 KiB
C++
106 lines
2.7 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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// A simple class that allows an arbitrary set of posix signals to be
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// associated with an Asio handler.
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#ifndef OPENVPN_ASIO_ASIOSIGNAL_H
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#define OPENVPN_ASIO_ASIOSIGNAL_H
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#include <openvpn/io/io.hpp>
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#include <openvpn/common/platform.hpp>
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#include <openvpn/common/rc.hpp>
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namespace openvpn {
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class ASIOSignals : public RC<thread_safe_refcount>
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{
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public:
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typedef RCPtr<ASIOSignals> Ptr;
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ASIOSignals(openvpn_io::io_context& io_context)
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: halt(false), signals_(io_context) {}
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enum {
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S_SIGINT = (1<<0),
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S_SIGTERM = (1<<1),
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#ifndef OPENVPN_PLATFORM_WIN
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S_SIGQUIT = (1<<2),
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S_SIGHUP = (1<<3),
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S_SIGUSR1 = (1<<4),
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S_SIGUSR2 = (1<<5),
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#endif
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};
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template <typename SignalHandler>
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void register_signals(SignalHandler stop_handler, unsigned int sigmask = (S_SIGINT|S_SIGTERM))
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{
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if (sigmask & S_SIGINT)
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signals_.add(SIGINT);
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if (sigmask & S_SIGTERM)
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signals_.add(SIGTERM);
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#ifndef OPENVPN_PLATFORM_WIN
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if (sigmask & S_SIGQUIT)
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signals_.add(SIGQUIT);
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if (sigmask & S_SIGHUP)
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signals_.add(SIGHUP);
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if (sigmask & S_SIGUSR1)
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signals_.add(SIGUSR1);
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if (sigmask & S_SIGUSR2)
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signals_.add(SIGUSR2);
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#endif
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signals_.async_wait(stop_handler);
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}
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template <typename SignalHandler>
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void register_signals_all(SignalHandler stop_handler)
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{
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register_signals(stop_handler,
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S_SIGINT
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| S_SIGTERM
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#ifndef OPENVPN_PLATFORM_WIN
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| S_SIGQUIT
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| S_SIGHUP
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| S_SIGUSR1
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| S_SIGUSR2
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#endif
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);
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}
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void cancel()
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{
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if (!halt)
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{
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halt = true;
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signals_.cancel();
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}
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}
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private:
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bool halt;
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openvpn_io::signal_set signals_;
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};
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}
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#endif
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