/* * Copyright 2003-2018 The Music Player Daemon Project * http://www.musicpd.org * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * 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 General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "config.h" #include "Listen.hxx" #include "client/Listener.hxx" #include "config/Param.hxx" #include "config/Data.hxx" #include "config/Option.hxx" #include "config/Net.hxx" #include "net/UniqueSocketDescriptor.hxx" #include "system/Error.hxx" #include "util/RuntimeError.hxx" #include "fs/AllocatedPath.hxx" #include #include #ifdef ENABLE_SYSTEMD_DAEMON #include #endif #define DEFAULT_PORT 6600 int listen_port; #ifdef ENABLE_SYSTEMD_DAEMON static bool listen_systemd_activation(ClientListener &listener) { int n = sd_listen_fds(true); if (n <= 0) { if (n < 0) throw MakeErrno(-n, "sd_listen_fds() failed"); return false; } for (int i = SD_LISTEN_FDS_START, end = SD_LISTEN_FDS_START + n; i != end; ++i) listener.AddFD(UniqueSocketDescriptor(i)); return true; } #endif void listen_global_init(const ConfigData &config, ClientListener &listener) { int port = config.GetPositive(ConfigOption::PORT, DEFAULT_PORT); #ifdef ENABLE_SYSTEMD_DAEMON if (listen_systemd_activation(listener)) return; #endif for (const auto ¶m : config.GetParamList(ConfigOption::BIND_TO_ADDRESS)) { try { ServerSocketAddGeneric(listener, param.value.c_str(), port); } catch (...) { std::throw_with_nested(FormatRuntimeError("Failed to listen on %s (line %i)", param.value.c_str(), param.line)); } } if (listener.IsEmpty()) { /* no "bind_to_address" configured, bind the configured port on all interfaces */ try { listener.AddPort(port); } catch (...) { std::throw_with_nested(FormatRuntimeError("Failed to listen on *:%d: ", port)); } } listener.Open(); listen_port = port; }