mpd/src/Main.cxx

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/*
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* Copyright (C) 2003-2014 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"
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#include "Main.hxx"
#include "Instance.hxx"
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#include "CommandLine.hxx"
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#include "PlaylistFile.hxx"
#include "PlaylistGlobal.hxx"
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#include "MusicChunk.hxx"
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#include "StateFile.hxx"
#include "PlayerThread.hxx"
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#include "Mapper.hxx"
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#include "Permission.hxx"
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#include "Listen.hxx"
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#include "client/Client.hxx"
#include "client/ClientList.hxx"
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#include "command/AllCommands.hxx"
#include "Partition.hxx"
#include "tag/TagConfig.hxx"
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#include "ReplayGainConfig.hxx"
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#include "Idle.hxx"
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#include "Log.hxx"
#include "LogInit.hxx"
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#include "GlobalEvents.hxx"
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#include "input/Init.hxx"
#include "event/Loop.hxx"
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#include "IOThread.hxx"
#include "fs/AllocatedPath.hxx"
#include "fs/Config.hxx"
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#include "playlist/PlaylistRegistry.hxx"
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#include "zeroconf/ZeroconfGlue.hxx"
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#include "decoder/DecoderList.hxx"
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#include "AudioConfig.hxx"
#include "pcm/PcmConvert.hxx"
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#include "unix/SignalHandlers.hxx"
#include "unix/Daemon.hxx"
#include "system/FatalError.hxx"
#include "util/UriUtil.hxx"
#include "util/Error.hxx"
#include "util/Domain.hxx"
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#include "thread/Id.hxx"
#include "thread/Slack.hxx"
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#include "lib/icu/Init.hxx"
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#include "config/ConfigGlobal.hxx"
#include "config/ConfigData.hxx"
#include "config/ConfigDefaults.hxx"
#include "config/ConfigOption.hxx"
#include "config/ConfigError.hxx"
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#include "Stats.hxx"
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#ifdef ENABLE_DATABASE
#include "db/update/Service.hxx"
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#include "db/Configured.hxx"
#include "db/DatabasePlugin.hxx"
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#include "db/plugins/simple/SimpleDatabasePlugin.hxx"
#include "storage/Configured.hxx"
#include "storage/CompositeStorage.hxx"
#ifdef ENABLE_INOTIFY
#include "db/update/InotifyUpdate.hxx"
#endif
#endif
#ifdef ENABLE_NEIGHBOR_PLUGINS
#include "neighbor/Glue.hxx"
#endif
#ifdef ENABLE_SQLITE
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#include "sticker/StickerDatabase.hxx"
#endif
#ifdef ENABLE_ARCHIVE
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#include "archive/ArchiveList.hxx"
#endif
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#ifdef ANDROID
#include "java/Global.hxx"
#include "java/File.hxx"
#include "android/Environment.hxx"
#include "android/Context.hxx"
#include "fs/StandardDirectory.hxx"
#include "fs/FileSystem.hxx"
#include "org_musicpd_Bridge.h"
#endif
#ifdef HAVE_GLIB
#include <glib.h>
#endif
#include <stdlib.h>
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
#ifdef WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#include <limits.h>
static constexpr unsigned DEFAULT_BUFFER_SIZE = 4096;
static constexpr unsigned DEFAULT_BUFFER_BEFORE_PLAY = 10;
static constexpr Domain main_domain("main");
#ifdef ANDROID
Context *context;
#endif
Instance *instance;
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static StateFile *state_file;
#ifndef ANDROID
static bool
glue_daemonize_init(const struct options *options, Error &error)
{
auto pid_file = config_get_path(CONF_PID_FILE, error);
if (pid_file.IsNull() && error.IsDefined())
return false;
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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;
}
#endif
static bool
glue_mapper_init(Error &error)
{
auto playlist_dir = config_get_path(CONF_PLAYLIST_DIR, error);
if (playlist_dir.IsNull() && error.IsDefined())
return false;
mapper_init(std::move(playlist_dir));
return true;
}
#ifdef ENABLE_DATABASE
static bool
InitStorage(Error &error)
{
Storage *storage = CreateConfiguredStorage(error);
if (storage == nullptr)
return !error.IsDefined();
assert(!error.IsDefined());
CompositeStorage *composite = new CompositeStorage();
instance->storage = composite;
composite->Mount("", storage);
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)
{
Error error;
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instance->database =
CreateConfiguredDatabase(*instance->event_loop, *instance,
error);
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if (instance->database == nullptr) {
if (error.IsDefined())
FatalError(error);
else
return true;
}
if (instance->database->GetPlugin().flags & DatabasePlugin::FLAG_REQUIRE_STORAGE) {
if (!InitStorage(error))
FatalError(error);
if (instance->storage == nullptr) {
delete instance->database;
instance->database = nullptr;
LogDefault(config_domain,
"Found database setting without "
"music_directory - disabling database");
return true;
}
} else {
if (IsStorageConfigured())
LogDefault(config_domain,
"Ignoring the storage configuration "
"because the database does not need it");
}
if (!instance->database->Open(error))
FatalError(error);
if (!instance->database->IsPlugin(simple_db_plugin))
return true;
SimpleDatabase &db = *(SimpleDatabase *)instance->database;
instance->update = new UpdateService(*instance->event_loop, db,
static_cast<CompositeStorage &>(*instance->storage),
*instance);
/* run database update after daemonization? */
return db.FileExists();
}
static bool
InitDatabaseAndStorage()
{
const bool create_db = !glue_db_init_and_load();
return create_db;
}
#endif
/**
* Configure and initialize the sticker subsystem.
*/
static void
glue_sticker_init(void)
{
#ifdef ENABLE_SQLITE
Error error;
auto sticker_file = config_get_path(CONF_STICKER_FILE, error);
if (sticker_file.IsNull()) {
if (error.IsDefined())
FatalError(error);
return;
}
if (!sticker_global_init(std::move(sticker_file), error))
FatalError(error);
#endif
}
static bool
glue_state_file_init(Error &error)
{
auto path_fs = config_get_path(CONF_STATE_FILE, error);
if (path_fs.IsNull()) {
if (error.IsDefined())
return false;
#ifdef ANDROID
const auto cache_dir = GetUserCacheDir();
if (cache_dir.IsNull())
return true;
path_fs = AllocatedPath::Build(cache_dir, "state");
#else
return true;
#endif
}
state_file = new StateFile(std::move(path_fs),
*instance->partition,
*instance->event_loop);
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state_file->Read();
return true;
}
/**
* Windows-only initialization of the Winsock2 library.
*/
static void winsock_init(void)
{
#ifdef WIN32
WSADATA sockinfo;
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int 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;
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size_t buffer_size;
param = config_get_param(CONF_AUDIO_BUFFER_SIZE);
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if (param != nullptr) {
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char *test;
long tmp = strtol(param->value.c_str(), &test, 10);
if (*test != '\0' || tmp <= 0 || tmp == LONG_MAX)
FormatFatalError("buffer size \"%s\" is not a "
"positive integer, line %i",
param->value.c_str(), param->line);
buffer_size = tmp;
} else
buffer_size = DEFAULT_BUFFER_SIZE;
buffer_size *= 1024;
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const unsigned buffered_chunks = buffer_size / CHUNK_SIZE;
if (buffered_chunks >= 1 << 15)
FormatFatalError("buffer size \"%lu\" is too big",
(unsigned long)buffer_size);
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float perc;
param = config_get_param(CONF_BUFFER_BEFORE_PLAY);
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if (param != nullptr) {
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char *test;
perc = strtod(param->value.c_str(), &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.c_str(), param->line);
}
} else
perc = DEFAULT_BUFFER_BEFORE_PLAY;
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unsigned 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);
}
/**
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* Handler for GlobalEvents::IDLE.
*/
static void
idle_event_emitted(void)
{
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/* 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
/**
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* Handler for GlobalEvents::SHUTDOWN.
*/
static void
shutdown_event_emitted(void)
{
instance->event_loop->Break();
}
#endif
#ifndef ANDROID
int main(int argc, char *argv[])
{
#ifdef WIN32
return win32_main(argc, argv);
#else
return mpd_main(argc, argv);
#endif
}
#endif
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#ifdef ANDROID
static inline
#endif
int mpd_main(int argc, char *argv[])
{
struct options options;
Error error;
#ifndef ANDROID
daemonize_close_stdin();
#ifdef HAVE_LOCALE_H
/* initialize locale */
setlocale(LC_CTYPE,"");
#endif
#ifdef HAVE_GLIB
g_set_application_name("Music Player Daemon");
#if !GLIB_CHECK_VERSION(2,32,0)
/* enable GLib's thread safety code */
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g_thread_init(nullptr);
#endif
#endif
#endif
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if (!IcuInit(error)) {
LogError(error);
return EXIT_FAILURE;
}
winsock_init();
io_thread_init();
config_global_init();
#ifdef ANDROID
(void)argc;
(void)argv;
{
const auto sdcard = Environment::getExternalStorageDirectory();
if (!sdcard.IsNull()) {
const auto config_path =
AllocatedPath::Build(sdcard, "mpd.conf");
if (FileExists(config_path) &&
!ReadConfigFile(config_path, error)) {
LogError(error);
return EXIT_FAILURE;
}
}
}
#else
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if (!parse_cmdline(argc, argv, &options, error)) {
LogError(error);
return EXIT_FAILURE;
}
if (!glue_daemonize_init(&options, error)) {
LogError(error);
return EXIT_FAILURE;
}
#endif
stats_global_init();
TagLoadConfig();
if (!log_init(options.verbose, options.log_stderr, error)) {
LogError(error);
return EXIT_FAILURE;
}
instance = new Instance();
instance->event_loop = new EventLoop();
#ifdef ENABLE_NEIGHBOR_PLUGINS
instance->neighbors = new NeighborGlue();
if (!instance->neighbors->Init(io_thread_get(), *instance, error)) {
LogError(error);
return EXIT_FAILURE;
}
if (instance->neighbors->IsEmpty()) {
delete instance->neighbors;
instance->neighbors = nullptr;
}
#endif
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const unsigned max_clients = config_get_positive(CONF_MAX_CONN, 10);
instance->client_list = new ClientList(max_clients);
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initialize_decoder_and_player();
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if (!listen_global_init(*instance->event_loop, *instance->partition,
error)) {
LogError(error);
return EXIT_FAILURE;
}
#ifndef ANDROID
daemonize_set_user();
daemonize_begin(options.daemon);
#endif
GlobalEvents::Initialize(*instance->event_loop);
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GlobalEvents::Register(GlobalEvents::IDLE, idle_event_emitted);
#ifdef WIN32
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GlobalEvents::Register(GlobalEvents::SHUTDOWN, shutdown_event_emitted);
#endif
ConfigureFS();
if (!glue_mapper_init(error)) {
LogError(error);
return EXIT_FAILURE;
}
initPermissions();
playlist_global_init();
spl_global_init();
#ifdef ENABLE_ARCHIVE
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archive_plugin_init_all();
#endif
if (!pcm_convert_global_init(error)) {
LogError(error);
return EXIT_FAILURE;
}
decoder_plugin_init_all();
#ifdef ENABLE_DATABASE
const bool create_db = InitDatabaseAndStorage();
#endif
glue_sticker_init();
command_init();
initAudioConfig();
instance->partition->outputs.Configure(*instance->event_loop,
instance->partition->pc);
client_manager_init();
replay_gain_global_init();
if (!input_stream_global_init(error)) {
LogError(error);
return EXIT_FAILURE;
}
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playlist_list_global_init();
#ifndef ANDROID
daemonize_commit();
setup_log_output(options.log_stderr);
SignalHandlersInit(*instance->event_loop);
#endif
io_thread_start();
#ifdef ENABLE_NEIGHBOR_PLUGINS
if (instance->neighbors != nullptr &&
!instance->neighbors->Open(error))
FatalError(error);
#endif
ZeroconfInit(*instance->event_loop);
StartPlayerThread(instance->partition->pc);
#ifdef ENABLE_DATABASE
if (create_db) {
/* the database failed to load: recreate the
database */
unsigned job = instance->update->Enqueue("", true);
if (job == 0)
FatalError("directory update failed");
}
#endif
if (!glue_state_file_init(error)) {
LogError(error);
return EXIT_FAILURE;
}
instance->partition->outputs.SetReplayGainMode(replay_gain_get_real_mode(instance->partition->playlist.queue.random));
#ifdef ENABLE_DATABASE
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if (config_get_bool(CONF_AUTO_UPDATE, false)) {
#ifdef ENABLE_INOTIFY
if (instance->storage != nullptr &&
instance->update != nullptr)
mpd_inotify_init(*instance->event_loop,
*instance->storage,
*instance->update,
config_get_unsigned(CONF_AUTO_UPDATE_DEPTH,
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INT_MAX));
#else
FormatWarning(main_domain,
"inotify: auto_update was disabled. enable during compilation phase");
#endif
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}
#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
/* the MPD frontend does not care about timer slack; set it to
a huge value to allow the kernel to reduce CPU wakeups */
SetThreadTimerSlackMS(100);
/* run the main loop */
instance->event_loop->Run();
#ifdef WIN32
win32_app_stopping();
#endif
/* cleanup */
#if defined(ENABLE_DATABASE) && defined(ENABLE_INOTIFY)
mpd_inotify_finish();
if (instance->update != nullptr)
instance->update->CancelAllAsync();
#endif
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if (state_file != nullptr) {
state_file->Write();
delete state_file;
}
instance->partition->pc.Kill();
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ZeroconfDeinit();
listen_global_finish();
delete instance->client_list;
#ifdef ENABLE_NEIGHBOR_PLUGINS
if (instance->neighbors != nullptr) {
instance->neighbors->Close();
delete instance->neighbors;
}
#endif
#ifdef ENABLE_DATABASE
delete instance->update;
if (instance->database != nullptr) {
instance->database->Close();
delete instance->database;
}
delete instance->storage;
#endif
#ifdef ENABLE_SQLITE
sticker_global_finish();
#endif
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GlobalEvents::Deinitialize();
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playlist_list_global_finish();
input_stream_global_finish();
#ifdef ENABLE_DATABASE
mapper_finish();
#endif
delete instance->partition;
command_finish();
decoder_plugin_deinit_all();
#ifdef ENABLE_ARCHIVE
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archive_plugin_deinit_all();
#endif
config_global_finish();
io_thread_deinit();
#ifndef ANDROID
SignalHandlersFinish();
#endif
delete instance->event_loop;
delete instance;
#ifndef ANDROID
daemonize_finish();
#endif
#ifdef WIN32
WSACleanup();
#endif
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IcuFinish();
log_deinit();
return EXIT_SUCCESS;
}
#ifdef ANDROID
gcc_visibility_default
JNIEXPORT void JNICALL
Java_org_musicpd_Bridge_run(JNIEnv *env, jclass, jobject _context)
{
Java::Init(env);
Java::File::Initialise(env);
Environment::Initialise(env);
context = new Context(env, _context);
mpd_main(0, nullptr);
delete context;
Environment::Deinitialise(env);
}
#endif