1 files changed, 562 insertions, 0 deletions
diff --git a/src/Main.cxx b/src/Main.cxx
new file mode 100644
index 000000000..8509abcfb
--- /dev/null
+++ b/src/Main.cxx
@@ -0,0 +1,562 @@
+/*
+ * 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 "Main.hxx"
+#include "Instance.hxx"
+#include "CommandLine.hxx"
+#include "PlaylistFile.hxx"
+#include "PlaylistGlobal.hxx"
+#include "UpdateGlue.hxx"
+#include "MusicChunk.hxx"
+#include "StateFile.hxx"
+#include "PlayerThread.hxx"
+#include "Mapper.hxx"
+#include "DatabaseGlue.hxx"
+#include "DatabaseSimple.hxx"
+#include "Permission.hxx"
+#include "Listen.hxx"
+#include "Client.hxx"
+#include "ClientList.hxx"
+#include "AllCommands.hxx"
+#include "Partition.hxx"
+#include "Volume.hxx"
+#include "OutputAll.hxx"
+#include "tag/TagConfig.hxx"
+#include "ReplayGainConfig.hxx"
+#include "Idle.hxx"
+#include "SignalHandlers.hxx"
+#include "Log.hxx"
+#include "LogInit.hxx"
+#include "GlobalEvents.hxx"
+#include "InputInit.hxx"
+#include "event/Loop.hxx"
+#include "IOThread.hxx"
+#include "fs/Path.hxx"
+#include "PlaylistRegistry.hxx"
+#include "ZeroconfGlue.hxx"
+#include "DecoderList.hxx"
+#include "AudioConfig.hxx"
+#include "pcm/PcmResample.hxx"
+#include "Daemon.hxx"
+#include "system/FatalError.hxx"
+#include "util/Error.hxx"
+#include "util/Domain.hxx"
+#include "ConfigGlobal.hxx"
+#include "ConfigData.hxx"
+#include "ConfigDefaults.hxx"
+#include "ConfigOption.hxx"
+#include "Stats.hxx"
+
+#ifdef ENABLE_INOTIFY
+#include "InotifyUpdate.hxx"
+#endif
+
+#ifdef ENABLE_SQLITE
+#include "StickerDatabase.hxx"
+#endif
+
+#ifdef ENABLE_ARCHIVE
+#include "ArchiveList.hxx"
+#endif
+
+#include <glib.h>
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+
+#ifdef HAVE_LOCALE_H
+#include <locale.h>
+#endif
+
+#ifdef WIN32
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#endif
+
+enum {
+	DEFAULT_BUFFER_SIZE = 2048,
+	DEFAULT_BUFFER_BEFORE_PLAY = 10,
+};
+
+static constexpr Domain main_domain("main");
+
+GThread *main_task;
+EventLoop *main_loop;
+
+Instance *instance;
+
+static StateFile *state_file;
+
+static bool
+glue_daemonize_init(const struct options *options, Error &error)
+{
+	Path pid_file = config_get_path(CONF_PID_FILE, error);
+	if (pid_file.IsNull() && error.IsDefined())
+		return false;
+
+	daemonize_init(config_get_string(CONF_USER, nullptr),
+		       config_get_string(CONF_GROUP, nullptr),
+		       std::move(pid_file));
+
+	if (options->kill)
+		daemonize_kill();
+
+	return true;
+}
+
+static bool
+glue_mapper_init(Error &error)
+{
+	Path music_dir = config_get_path(CONF_MUSIC_DIR, error);
+	if (music_dir.IsNull() && error.IsDefined())
+		return false;
+
+	Path playlist_dir = config_get_path(CONF_PLAYLIST_DIR, error);
+	if (playlist_dir.IsNull() && error.IsDefined())
+		return false;
+
+	if (music_dir.IsNull()) {
+		music_dir = Path::FromUTF8(g_get_user_special_dir(G_USER_DIRECTORY_MUSIC),
+					   error);
+		if (music_dir.IsNull())
+			return false;
+	}
+
+	mapper_init(std::move(music_dir), std::move(playlist_dir));
+	return true;
+}
+
+/**
+ * Returns the database.  If this function returns false, this has not
+ * succeeded, and the caller should create the database after the
+ * process has been daemonized.
+ */
+static bool
+glue_db_init_and_load(void)
+{
+	const struct config_param *param = config_get_param(CONF_DATABASE);
+	const struct config_param *path = config_get_param(CONF_DB_FILE);
+
+	if (param != nullptr && path != nullptr)
+		LogInfo(main_domain,
+			"Found both 'database' and 'db_file' setting - ignoring the latter");
+
+	if (!mapper_has_music_directory()) {
+		if (param != nullptr)
+			LogInfo(main_domain,
+				"Found database setting without "
+				"music_directory - disabling database");
+		if (path != nullptr)
+			LogInfo(main_domain,
+				"Found db_file setting without "
+				"music_directory - disabling database");
+		return true;
+	}
+
+	struct config_param *allocated = nullptr;
+
+	if (param == nullptr && path != nullptr) {
+		allocated = new config_param("database", path->line);
+		allocated->AddBlockParam("path", path->value, path->line);
+		param = allocated;
+	}
+
+	if (param == nullptr)
+		return true;
+
+	Error error;
+	if (!DatabaseGlobalInit(*param, error))
+		FatalError(error);
+
+	delete allocated;
+
+	if (!DatabaseGlobalOpen(error))
+		FatalError(error);
+
+	/* run database update after daemonization? */
+	return !db_is_simple() || db_exists();
+}
+
+/**
+ * Configure and initialize the sticker subsystem.
+ */
+static void
+glue_sticker_init(void)
+{
+#ifdef ENABLE_SQLITE
+	Error error;
+	Path sticker_file = config_get_path(CONF_STICKER_FILE, error);
+	if (sticker_file.IsNull() && error.IsDefined())
+		FatalError(error);
+
+	if (!sticker_global_init(std::move(sticker_file), error))
+		FatalError(error);
+#endif
+}
+
+static bool
+glue_state_file_init(Error &error)
+{
+	Path path_fs = config_get_path(CONF_STATE_FILE, error);
+	if (path_fs.IsNull())
+		return !error.IsDefined();
+
+	state_file = new StateFile(std::move(path_fs),
+				   *instance->partition, *main_loop);
+	state_file->Read();
+	return true;
+}
+
+/**
+ * Windows-only initialization of the Winsock2 library.
+ */
+static void winsock_init(void)
+{
+#ifdef WIN32
+	WSADATA sockinfo;
+	int retval;
+
+	retval = WSAStartup(MAKEWORD(2, 2), &sockinfo);
+	if(retval != 0)
+		FormatFatalError("Attempt to open Winsock2 failed; error code %d",
+				 retval);
+
+	if (LOBYTE(sockinfo.wVersion) != 2)
+		FatalError("We use Winsock2 but your version is either too new "
+			   "or old; please install Winsock 2.x");
+#endif
+}
+
+/**
+ * Initialize the decoder and player core, including the music pipe.
+ */
+static void
+initialize_decoder_and_player(void)
+{
+	const struct config_param *param;
+	char *test;
+	size_t buffer_size;
+	float perc;
+	unsigned buffered_chunks;
+	unsigned buffered_before_play;
+
+	param = config_get_param(CONF_AUDIO_BUFFER_SIZE);
+	if (param != nullptr) {
+		long tmp = strtol(param->value, &test, 10);
+		if (*test != '\0' || tmp <= 0 || tmp == LONG_MAX)
+			FormatFatalError("buffer size \"%s\" is not a "
+					 "positive integer, line %i",
+					 param->value, param->line);
+		buffer_size = tmp;
+	} else
+		buffer_size = DEFAULT_BUFFER_SIZE;
+
+	buffer_size *= 1024;
+
+	buffered_chunks = buffer_size / CHUNK_SIZE;
+
+	if (buffered_chunks >= 1 << 15)
+		FormatFatalError("buffer size \"%lu\" is too big",
+				 (unsigned long)buffer_size);
+
+	param = config_get_param(CONF_BUFFER_BEFORE_PLAY);
+	if (param != nullptr) {
+		perc = strtod(param->value, &test);
+		if (*test != '%' || perc < 0 || perc > 100) {
+			FormatFatalError("buffered before play \"%s\" is not "
+					 "a positive percentage and less "
+					 "than 100 percent, line %i",
+					 param->value, param->line);
+		}
+	} else
+		perc = DEFAULT_BUFFER_BEFORE_PLAY;
+
+	buffered_before_play = (perc / 100) * buffered_chunks;
+	if (buffered_before_play > buffered_chunks)
+		buffered_before_play = buffered_chunks;
+
+	const unsigned max_length =
+		config_get_positive(CONF_MAX_PLAYLIST_LENGTH,
+				    DEFAULT_PLAYLIST_MAX_LENGTH);
+
+	instance->partition = new Partition(*instance,
+					    max_length,
+					    buffered_chunks,
+					    buffered_before_play);
+}
+
+/**
+ * Handler for GlobalEvents::IDLE.
+ */
+static void
+idle_event_emitted(void)
+{
+	/* send "idle" notifications to all subscribed
+	   clients */
+	unsigned flags = idle_get();
+	if (flags != 0)
+		instance->client_list->IdleAdd(flags);
+
+	if (flags & (IDLE_PLAYLIST|IDLE_PLAYER|IDLE_MIXER|IDLE_OUTPUT) &&
+	    state_file != nullptr)
+		state_file->CheckModified();
+}
+
+#ifdef WIN32
+
+/**
+ * Handler for GlobalEvents::SHUTDOWN.
+ */
+static void
+shutdown_event_emitted(void)
+{
+	main_loop->Break();
+}
+
+#endif
+
+int main(int argc, char *argv[])
+{
+#ifdef WIN32
+	return win32_main(argc, argv);
+#else
+	return mpd_main(argc, argv);
+#endif
+}
+
+int mpd_main(int argc, char *argv[])
+{
+	struct options options;
+	clock_t start;
+	bool create_db;
+	Error error;
+	bool success;
+
+	daemonize_close_stdin();
+
+#ifdef HAVE_LOCALE_H
+	/* initialize locale */
+	setlocale(LC_CTYPE,"");
+#endif
+
+	g_set_application_name("Music Player Daemon");
+
+#if !GLIB_CHECK_VERSION(2,32,0)
+	/* enable GLib's thread safety code */
+	g_thread_init(nullptr);
+#endif
+
+	io_thread_init();
+	winsock_init();
+	config_global_init();
+
+	success = parse_cmdline(argc, argv, &options, error);
+	if (!success) {
+		LogError(error);
+		return EXIT_FAILURE;
+	}
+
+	if (!glue_daemonize_init(&options, error)) {
+		LogError(error);
+		return EXIT_FAILURE;
+	}
+
+	stats_global_init();
+	TagLoadConfig();
+
+	if (!log_init(options.verbose, options.log_stderr, error)) {
+		LogError(error);
+		return EXIT_FAILURE;
+	}
+
+	main_task = g_thread_self();
+	main_loop = new EventLoop(EventLoop::Default());
+
+	instance = new Instance();
+
+	const unsigned max_clients = config_get_positive(CONF_MAX_CONN, 10);
+	instance->client_list = new ClientList(max_clients);
+
+	success = listen_global_init(error);
+	if (!success) {
+		LogError(error);
+		return EXIT_FAILURE;
+	}
+
+	daemonize_set_user();
+
+	GlobalEvents::Initialize(*main_loop);
+	GlobalEvents::Register(GlobalEvents::IDLE, idle_event_emitted);
+#ifdef WIN32
+	GlobalEvents::Register(GlobalEvents::SHUTDOWN, shutdown_event_emitted);
+#endif
+
+	Path::GlobalInit();
+
+	if (!glue_mapper_init(error)) {
+		LogError(error);
+		return EXIT_FAILURE;
+	}
+
+	initPermissions();
+	playlist_global_init();
+	spl_global_init();
+#ifdef ENABLE_ARCHIVE
+	archive_plugin_init_all();
+#endif
+
+	if (!pcm_resample_global_init(error)) {
+		LogError(error);
+		return EXIT_FAILURE;
+	}
+
+	decoder_plugin_init_all();
+	update_global_init();
+
+	create_db = !glue_db_init_and_load();
+
+	glue_sticker_init();
+
+	command_init();
+	initialize_decoder_and_player();
+	volume_init();
+	initAudioConfig();
+	audio_output_all_init(&instance->partition->pc);
+	client_manager_init();
+	replay_gain_global_init();
+
+	if (!input_stream_global_init(error)) {
+		LogError(error);
+		return EXIT_FAILURE;
+	}
+
+	playlist_list_global_init();
+
+	daemonize(options.daemon);
+
+	setup_log_output(options.log_stderr);
+
+	SignalHandlersInit(*main_loop);
+
+	io_thread_start();
+
+	ZeroconfInit(*main_loop);
+
+	player_create(instance->partition->pc);
+
+	if (create_db) {
+		/* the database failed to load: recreate the
+		   database */
+		unsigned job = update_enqueue(nullptr, true);
+		if (job == 0)
+			FatalError("directory update failed");
+	}
+
+	if (!glue_state_file_init(error)) {
+		g_printerr("%s\n", error.GetMessage());
+		return EXIT_FAILURE;
+	}
+
+	audio_output_all_set_replay_gain_mode(replay_gain_get_real_mode(instance->partition->playlist.queue.random));
+
+	success = config_get_bool(CONF_AUTO_UPDATE, false);
+#ifdef ENABLE_INOTIFY
+	if (success && mapper_has_music_directory())
+		mpd_inotify_init(config_get_unsigned(CONF_AUTO_UPDATE_DEPTH,
+						     G_MAXUINT));
+#else
+	if (success)
+		FormatWarning(main_domain,
+			      "inotify: auto_update was disabled. enable during compilation phase");
+#endif
+
+	config_global_check();
+
+	/* enable all audio outputs (if not already done by
+	   playlist_state_restore() */
+	instance->partition->pc.UpdateAudio();
+
+#ifdef WIN32
+	win32_app_started();
+#endif
+
+	/* run the main loop */
+	main_loop->Run();
+
+#ifdef WIN32
+	win32_app_stopping();
+#endif
+
+	/* cleanup */
+
+#ifdef ENABLE_INOTIFY
+	mpd_inotify_finish();
+#endif
+
+	if (state_file != nullptr) {
+		state_file->Write();
+		delete state_file;
+	}
+
+	instance->partition->pc.Kill();
+	ZeroconfDeinit();
+	listen_global_finish();
+	delete instance->client_list;
+
+	start = clock();
+	DatabaseGlobalDeinit();
+	FormatDebug(main_domain,
+		    "db_finish took %f seconds",
+		    ((float)(clock()-start))/CLOCKS_PER_SEC);
+
+#ifdef ENABLE_SQLITE
+	sticker_global_finish();
+#endif
+
+	GlobalEvents::Deinitialize();
+
+	playlist_list_global_finish();
+	input_stream_global_finish();
+	audio_output_all_finish();
+	volume_finish();
+	mapper_finish();
+	delete instance->partition;
+	command_finish();
+	update_global_finish();
+	decoder_plugin_deinit_all();
+#ifdef ENABLE_ARCHIVE
+	archive_plugin_deinit_all();
+#endif
+	config_global_finish();
+	stats_global_finish();
+	io_thread_deinit();
+	SignalHandlersFinish();
+	delete instance;
+	delete main_loop;
+	daemonize_finish();
+#ifdef WIN32
+	WSACleanup();
+#endif
+
+	log_deinit();
+	return EXIT_SUCCESS;
+}