mirror of
https://github.com/OpenVPN/openvpn3.git
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78 lines
2.3 KiB
C++
78 lines
2.3 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) 2012-2015 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 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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#ifndef OPENVPN_COMMON_DAEMON_H
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#define OPENVPN_COMMON_DAEMON_H
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#include <sys/types.h>
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#include <unistd.h>
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#include <string>
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#include <openvpn/common/size.hpp>
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#include <openvpn/common/exception.hpp>
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#include <openvpn/common/format.hpp>
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#include <openvpn/common/file.hpp>
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#include <openvpn/common/logrotate.hpp>
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#include <openvpn/common/redir.hpp>
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namespace openvpn {
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OPENVPN_EXCEPTION(daemon_err);
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inline void log_setup(const std::string& log_fn,
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const bool log_append,
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const int log_versions,
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const bool stdin_to_dev_null,
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const bool combine_out_err)
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{
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if (!log_append && log_versions >= 1)
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log_rotate(log_fn, log_versions);
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RedirectStd redir(stdin_to_dev_null ? "/dev/null" : "",
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log_fn,
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log_append ? RedirectStd::FLAGS_APPEND : RedirectStd::FLAGS_OVERWRITE,
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RedirectStd::MODE_USER_GROUP,
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combine_out_err);
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redir.redirect();
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}
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inline void daemonize()
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{
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if (daemon(1, 1) < 0)
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throw daemon_err("daemon() failed");
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}
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inline void daemonize(const std::string& log_fn,
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const bool log_append,
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const int log_versions)
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{
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log_setup(log_fn, log_append, log_versions, true, true);
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daemonize();
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}
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inline void write_pid(const std::string& fn)
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{
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write_string(fn, to_string(::getpid()) + '\n');
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}
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}
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#endif
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