111 lines
2.6 KiB
C++
111 lines
2.6 KiB
C++
/*
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* Copyright 2003-2018 The Music Player Daemon Project
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* http://www.musicpd.org
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "Listen.hxx"
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#include "client/Listener.hxx"
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#include "config/Param.hxx"
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#include "config/Data.hxx"
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#include "config/Option.hxx"
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#include "config/Net.hxx"
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#include "system/Error.hxx"
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#include "util/RuntimeError.hxx"
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#include "fs/AllocatedPath.hxx"
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#include <string.h>
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#include <assert.h>
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#ifdef ENABLE_SYSTEMD_DAEMON
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#include <systemd/sd-daemon.h>
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#endif
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#define DEFAULT_PORT 6600
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int listen_port;
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/**
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* Throws #std::runtime_error on error.
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*/
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static void
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listen_add_config_param(ClientListener &listener,
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unsigned int port,
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const ConfigParam *param)
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{
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assert(param != nullptr);
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ServerSocketAddGeneric(listener, param->value.c_str(), port);
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}
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#ifdef ENABLE_SYSTEMD_DAEMON
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static bool
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listen_systemd_activation(ClientListener &listener)
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{
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int n = sd_listen_fds(true);
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if (n <= 0) {
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if (n < 0)
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throw MakeErrno(-n, "sd_listen_fds() failed");
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return false;
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}
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for (int i = SD_LISTEN_FDS_START, end = SD_LISTEN_FDS_START + n;
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i != end; ++i)
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listener.AddFD(i);
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return true;
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}
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#endif
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void
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listen_global_init(const ConfigData &config, ClientListener &listener)
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{
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int port = config.GetPositive(ConfigOption::PORT, DEFAULT_PORT);
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#ifdef ENABLE_SYSTEMD_DAEMON
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if (listen_systemd_activation(listener))
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return;
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#endif
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for (const auto ¶m : config.GetParamList(ConfigOption::BIND_TO_ADDRESS)) {
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try {
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listen_add_config_param(listener, port, ¶m);
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} catch (...) {
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std::throw_with_nested(FormatRuntimeError("Failed to listen on %s (line %i)",
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param.value.c_str(),
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param.line));
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}
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}
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if (listener.IsEmpty()) {
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/* no "bind_to_address" configured, bind the
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configured port on all interfaces */
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try {
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listener.AddPort(port);
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} catch (...) {
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std::throw_with_nested(FormatRuntimeError("Failed to listen on *:%d: ", port));
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}
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}
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listener.Open();
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listen_port = port;
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}
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