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Diffstat (limited to 'src/Listen.cxx')
| -rw-r--r-- | src/Listen.cxx | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/src/Listen.cxx b/src/Listen.cxx new file mode 100644 index 000000000..0dcd6fddf --- /dev/null +++ b/src/Listen.cxx @@ -0,0 +1,161 @@ +/* + * Copyright (C) 2003-2013 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 "Main.hxx" +#include "Instance.hxx" +#include "Client.hxx" +#include "ConfigData.hxx" +#include "ConfigGlobal.hxx" +#include "ConfigOption.hxx" +#include "event/ServerSocket.hxx" +#include "util/Error.hxx" +#include "fs/Path.hxx" + +#include <string.h> +#include <assert.h> + +#ifdef ENABLE_SYSTEMD_DAEMON +#include <systemd/sd-daemon.h> +#endif + +#undef G_LOG_DOMAIN +#define G_LOG_DOMAIN "listen" + +#define DEFAULT_PORT 6600 + +class ClientListener final : public ServerSocket { +public: + ClientListener():ServerSocket(*main_loop) {} + +private: + virtual void OnAccept(int fd, const sockaddr &address, + size_t address_length, int uid) { + client_new(*main_loop, *instance->partition, + fd, &address, address_length, uid); + } +}; + +static ClientListener *listen_socket; +int listen_port; + +static bool +listen_add_config_param(unsigned int port, + const struct config_param *param, + Error &error_r) +{ + assert(param != NULL); + + if (0 == strcmp(param->value, "any")) { + return listen_socket->AddPort(port, error_r); + } else if (param->value[0] == '/' || param->value[0] == '~') { + Path path = config_parse_path(param, error_r); + return !path.IsNull() && listen_socket->AddPath(path.c_str(), error_r); + } else { + return listen_socket->AddHost(param->value, port, error_r); + } +} + +static bool +listen_systemd_activation(Error &error_r) +{ +#ifdef ENABLE_SYSTEMD_DAEMON + int n = sd_listen_fds(true); + if (n <= 0) { + if (n < 0) + g_warning("sd_listen_fds() failed: %s", + g_strerror(-n)); + return false; + } + + for (int i = SD_LISTEN_FDS_START, end = SD_LISTEN_FDS_START + n; + i != end; ++i) + if (!listen_socket->AddFD(i, error_r)) + return false; + + return true; +#else + (void)error_r; + return false; +#endif +} + +bool +listen_global_init(Error &error) +{ + assert(main_loop != nullptr); + + int port = config_get_positive(CONF_PORT, DEFAULT_PORT); + const struct config_param *param = + config_get_next_param(CONF_BIND_TO_ADDRESS, NULL); + bool success; + + listen_socket = new ClientListener(); + + if (listen_systemd_activation(error)) + return true; + + if (error.IsDefined()) + return false; + + if (param != NULL) { + /* "bind_to_address" is configured, create listeners + for all values */ + + do { + if (!listen_add_config_param(port, param, error)) { + delete listen_socket; + error.FormatPrefix("Failed to listen on %s (line %i): ", + param->value, param->line); + return false; + } + + param = config_get_next_param(CONF_BIND_TO_ADDRESS, + param); + } while (param != NULL); + } else { + /* no "bind_to_address" configured, bind the + configured port on all interfaces */ + + success = listen_socket->AddPort(port, error); + if (!success) { + delete listen_socket; + error.FormatPrefix("Failed to listen on *:%d: ", port); + return false; + } + } + + if (!listen_socket->Open(error)) { + delete listen_socket; + return false; + } + + listen_port = port; + return true; +} + +void listen_global_finish(void) +{ + g_debug("listen_global_finish called"); + + assert(listen_socket != NULL); + + delete listen_socket; +} |