mpd/src/Main.cxx

689 lines
15 KiB
C++

// SPDX-License-Identifier: GPL-2.0-or-later
// Copyright The Music Player Daemon Project
#include "config.h"
#include "Main.hxx"
#include "Instance.hxx"
#include "CommandLine.hxx"
#include "PlaylistFile.hxx"
#include "MusicChunk.hxx"
#include "StateFile.hxx"
#include "Mapper.hxx"
#include "Permission.hxx"
#include "Listen.hxx"
#include "client/Config.hxx"
#include "client/List.hxx"
#include "command/AllCommands.hxx"
#include "Partition.hxx"
#include "tag/Config.hxx"
#include "protocol/IdleFlags.hxx"
#include "Log.hxx"
#include "LogInit.hxx"
#include "input/Init.hxx"
#include "input/cache/Config.hxx"
#include "input/cache/Manager.hxx"
#include "event/Loop.hxx"
#include "event/Call.hxx"
#include "fs/AllocatedPath.hxx"
#include "fs/Config.hxx"
#include "playlist/PlaylistRegistry.hxx"
#include "zeroconf/Glue.hxx"
#include "decoder/DecoderList.hxx"
#include "pcm/Convert.hxx"
#include "unix/SignalHandlers.hxx"
#include "thread/Slack.hxx"
#include "net/Init.hxx"
#include "lib/icu/Init.hxx"
#include "config/Check.hxx"
#include "config/Data.hxx"
#include "config/Param.hxx"
#include "config/Path.hxx"
#include "config/Defaults.hxx"
#include "config/Option.hxx"
#include "config/Domain.hxx"
#include "config/Parser.hxx"
#include "config/PartitionConfig.hxx"
#include "util/ScopeExit.hxx"
#ifdef ENABLE_DAEMON
#include "unix/Daemon.hxx"
#endif
#ifdef ENABLE_DATABASE
#include "db/update/Service.hxx"
#include "db/Configured.hxx"
#include "db/DatabasePlugin.hxx"
#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
#include "sticker/Database.hxx"
#endif
#ifdef ENABLE_ARCHIVE
#include "archive/ArchiveList.hxx"
#endif
#ifdef ANDROID
#include "java/Global.hxx"
#include "java/File.hxx"
#include "android/Environment.hxx"
#include "android/Context.hxx"
#include "android/LogListener.hxx"
#include "config/File.hxx"
#include "fs/FileSystem.hxx"
#include "org_musicpd_Bridge.h"
#endif
#ifdef ENABLE_DBUS
#include "lib/dbus/Init.hxx"
#endif
#ifdef ENABLE_SYSTEMD_DAEMON
#include <systemd/sd-daemon.h>
#endif
#include <climits>
#ifndef ANDROID
#include <clocale>
#endif
#ifdef ANDROID
Context *context;
LogListener *logListener;
#endif
Instance *global_instance;
#ifdef ENABLE_DAEMON
static void
glue_daemonize_init(const CommandLineOptions &options,
const ConfigData &config)
{
auto pid_file = config.GetPath(ConfigOption::PID_FILE);
#ifdef __linux__
if (options.systemd && pid_file != nullptr) {
pid_file = nullptr;
fprintf(stderr,
"Ignoring the 'pid_file' setting in systemd mode\n");
}
#endif
daemonize_init(config.GetString(ConfigOption::USER),
config.GetString(ConfigOption::GROUP),
std::move(pid_file));
if (options.kill)
daemonize_kill();
}
#endif
static void
glue_mapper_init(const ConfigData &config)
{
auto playlist_directory = config.GetPath(ConfigOption::PLAYLIST_DIR);
#ifdef ANDROID
/* if there is no explicit configuration, store playlists in
"/sdcard/Android/data/org.musicpd/files/playlists" */
if (playlist_directory.IsNull())
playlist_directory = context->GetExternalFilesDir(Java::GetEnv(),
"playlists");
#endif
mapper_init(std::move(playlist_directory));
}
#ifdef ENABLE_DATABASE
static void
InitStorage(Instance &instance, EventLoop &event_loop,
const ConfigData &config)
{
auto storage = CreateConfiguredStorage(config, event_loop);
if (storage == nullptr)
return;
auto *composite = new CompositeStorage();
instance.storage = composite;
composite->Mount("", std::move(storage));
}
/**
* 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(Instance &instance, const ConfigData &config)
{
auto db = CreateConfiguredDatabase(config, instance.event_loop,
instance.io_thread.GetEventLoop(),
instance);
if (!db)
return true;
if (db->GetPlugin().RequireStorage()) {
InitStorage(instance, instance.io_thread.GetEventLoop(),
config);
if (instance.storage == nullptr) {
LogNotice(config_domain,
"Found database setting without "
"music_directory - disabling database");
return true;
}
} else {
if (IsStorageConfigured(config))
LogNotice(config_domain,
"Ignoring the storage configuration "
"because the database does not need it");
}
try {
db->Open();
} catch (...) {
std::throw_with_nested(std::runtime_error("Failed to open database plugin"));
}
instance.database = std::move(db);
auto *sdb = dynamic_cast<SimpleDatabase *>(instance.database.get());
if (sdb == nullptr)
return true;
instance.update = new UpdateService(config,
instance.event_loop, *sdb,
static_cast<CompositeStorage &>(*instance.storage),
instance);
/* run database update after daemonization? */
return sdb->FileExists();
}
static bool
InitDatabaseAndStorage(Instance &instance, const ConfigData &config)
{
const bool create_db = !glue_db_init_and_load(instance, config);
return create_db;
}
#endif
#ifdef ENABLE_SQLITE
/**
* Configure and initialize the sticker subsystem.
*/
static std::unique_ptr<StickerDatabase>
LoadStickerDatabase(const ConfigData &config)
{
auto sticker_file = config.GetPath(ConfigOption::STICKER_FILE);
if (sticker_file.IsNull())
return nullptr;
return std::make_unique<StickerDatabase>(std::move(sticker_file));
}
#endif
static void
glue_state_file_init(Instance &instance, const ConfigData &raw_config)
{
StateFileConfig config(raw_config);
if (!config.IsEnabled())
return;
instance.state_file = std::make_unique< StateFile>(std::move(config),
instance.partitions.front(),
instance.event_loop);
instance.state_file->Read();
}
/**
* Initialize the decoder and player core, including the music pipe.
*/
static void
initialize_decoder_and_player(Instance &instance,
const ConfigData &config,
const PartitionConfig &partition_config)
{
instance.partitions.emplace_back(instance,
"default",
partition_config);
auto &partition = instance.partitions.back();
partition.replay_gain_mode = config.With(ConfigOption::REPLAYGAIN, [](const char *s){
return s != nullptr
? FromString(s)
: ReplayGainMode::OFF;
});
}
inline void
Instance::BeginShutdownUpdate() noexcept
{
#ifdef ENABLE_DATABASE
#ifdef ENABLE_INOTIFY
inotify_update.reset();
#endif
if (update != nullptr)
update->CancelAllAsync();
#endif
}
inline void
Instance::BeginShutdownPartitions() noexcept
{
for (auto &partition : partitions) {
partition.BeginShutdown();
}
}
static inline void
MainConfigured(const CommandLineOptions &options,
const ConfigData &raw_config)
{
#ifdef ENABLE_DAEMON
daemonize_close_stdin();
#endif
#ifndef ANDROID
/* initialize locale */
std::setlocale(LC_CTYPE,"");
std::setlocale(LC_COLLATE, "");
#endif
const ScopeIcuInit icu_init;
const ScopeNetInit net_init;
#ifdef ENABLE_DBUS
const ODBus::ScopeInit dbus_init;
#endif
InitPathParser(raw_config);
const PartitionConfig partition_config{raw_config};
#ifdef ENABLE_DAEMON
glue_daemonize_init(options, raw_config);
#endif
TagLoadConfig(raw_config);
log_init(raw_config, options.verbose, options.log_stderr);
Instance instance;
global_instance = &instance;
#ifdef ENABLE_NEIGHBOR_PLUGINS
instance.neighbors = std::make_unique<NeighborGlue>();
instance.neighbors->Init(raw_config,
instance.io_thread.GetEventLoop(),
instance);
if (instance.neighbors->IsEmpty())
instance.neighbors.reset();
#endif
const unsigned max_clients =
raw_config.GetPositive(ConfigOption::MAX_CONN, 100);
instance.client_list = std::make_unique<ClientList>(max_clients);
const auto *input_cache_config = raw_config.GetBlock(ConfigBlockOption::INPUT_CACHE);
if (input_cache_config != nullptr) {
const InputCacheConfig c(*input_cache_config);
instance.input_cache = std::make_unique<InputCacheManager>(c);
}
initialize_decoder_and_player(instance,
raw_config, partition_config);
listen_global_init(raw_config, *instance.partitions.front().listener);
#ifdef ENABLE_DAEMON
daemonize_set_user();
daemonize_begin(options.daemon);
AtScopeExit() { daemonize_finish(); };
#endif
ConfigureFS(raw_config);
AtScopeExit() { DeinitFS(); };
glue_mapper_init(raw_config);
initPermissions(raw_config);
spl_global_init(raw_config);
#ifdef ENABLE_ARCHIVE
const ScopeArchivePluginsInit archive_plugins_init{raw_config};
#endif
pcm_convert_global_init(raw_config);
const ScopeDecoderPluginsInit decoder_plugins_init(raw_config);
#ifdef ENABLE_DATABASE
const bool create_db = InitDatabaseAndStorage(instance, raw_config);
#endif
#ifdef ENABLE_SQLITE
instance.sticker_database = LoadStickerDatabase(raw_config);
#endif
command_init();
for (auto &partition : instance.partitions) {
partition.outputs.Configure(instance.io_thread.GetEventLoop(),
instance.rtio_thread.GetEventLoop(),
raw_config,
partition_config.player.replay_gain);
partition.UpdateEffectiveReplayGainMode();
}
raw_config.WithEach(ConfigBlockOption::PARTITION, [&](const auto &block){
const char *name = block.GetBlockValue("name");
if (name == nullptr)
throw std::runtime_error("Missing 'name'");
instance.partitions.emplace_back(instance, name,
partition_config);
});
client_manager_init(raw_config);
const ScopeInputPluginsInit input_plugins_init(raw_config,
instance.io_thread.GetEventLoop());
const ScopePlaylistPluginsInit playlist_plugins_init(raw_config);
#ifdef ENABLE_DAEMON
daemonize_commit();
#endif
#ifndef ANDROID
setup_log_output();
const ScopeSignalHandlersInit signal_handlers_init{
instance,
options.daemon,
};
#endif
instance.io_thread.Start();
instance.rtio_thread.Start();
#ifdef ENABLE_NEIGHBOR_PLUGINS
if (instance.neighbors != nullptr)
instance.neighbors->Open();
AtScopeExit(&instance) {
if (instance.neighbors != nullptr)
instance.neighbors->Close();
};
#endif
#ifdef HAVE_ZEROCONF
std::unique_ptr<ZeroconfHelper> zeroconf;
try {
auto &event_loop = instance.io_thread.GetEventLoop();
BlockingCall(event_loop, [&](){
zeroconf = ZeroconfInit(raw_config, event_loop);
});
} catch (...) {
LogError(std::current_exception(),
"Zeroconf initialization failed");
}
AtScopeExit(&zeroconf, &instance) {
if (zeroconf) {
auto &event_loop = instance.io_thread.GetEventLoop();
BlockingCall(event_loop, [&](){
zeroconf.reset();
});
}
};
#endif
#ifdef ENABLE_DATABASE
if (create_db) {
/* the database failed to load: recreate the
database */
instance.update->Enqueue("", true);
}
#endif
glue_state_file_init(instance, raw_config);
#ifdef ENABLE_DATABASE
if (raw_config.GetBool(ConfigOption::AUTO_UPDATE, false)) {
#ifdef ENABLE_INOTIFY
if (instance.storage != nullptr &&
instance.update != nullptr) {
try {
instance.inotify_update =
mpd_inotify_init(instance.event_loop,
*instance.storage,
*instance.update,
raw_config.GetUnsigned(ConfigOption::AUTO_UPDATE_DEPTH,
INT_MAX));
} catch (...) {
LogError(std::current_exception());
}
}
#else
LogWarning(config_domain,
"inotify: auto_update was disabled. enable during compilation phase");
#endif
}
#endif
Check(raw_config);
/* enable all audio outputs (if not already done by
playlist_state_restore() */
for (auto &partition : instance.partitions)
partition.pc.LockUpdateAudio();
#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 */
SetThreadTimerSlack(std::chrono::milliseconds(100));
#ifdef ENABLE_SYSTEMD_DAEMON
sd_notify(0, "READY=1");
#endif
/* run the main loop */
instance.event_loop.Run();
#ifdef _WIN32
win32_app_stopping();
#endif
/* cleanup */
if (instance.state_file)
instance.state_file->Write();
instance.BeginShutdownUpdate();
instance.BeginShutdownPartitions();
}
#ifdef ANDROID
/**
* Wrapper for ReadConfigFile() which returns false if the file was
* not found.
*/
static bool
TryReadConfigFile(ConfigData &config, Path path)
{
if (!FileExists(path))
return false;
ReadConfigFile(config, path);
return true;
}
static void
LoadConfigFile(JNIEnv *env, ConfigData &config)
{
/* try loading mpd.conf from
"Android/data/org.musicpd/files/mpd.conf" (the app specific
data directory) first */
if (const auto dir = context->GetExternalFilesDir(env);
!dir.IsNull() &&
TryReadConfigFile(config, dir / Path::FromFS("mpd.conf")))
return;
/* if that fails, attempt to load "mpd.conf" from the root of
the SD card (pre-0.23.9, ceases to work since Android
12) */
if (const auto dir = Environment::getExternalStorageDirectory(env);
!dir.IsNull())
TryReadConfigFile(config, dir / Path::FromFS("mpd.conf"));
}
static void
AndroidMain(JNIEnv *env)
{
CommandLineOptions options;
ConfigData raw_config;
LoadConfigFile(env, raw_config);
MainConfigured(options, raw_config);
}
gcc_visibility_default
JNIEXPORT void JNICALL
Java_org_musicpd_Bridge_run(JNIEnv *env, jclass, jobject _context, jobject _logListener)
{
Java::Init(env);
Java::Object::Initialise(env);
Java::File::Initialise(env);
Environment::Initialise(env);
AtScopeExit(env) { Environment::Deinitialise(env); };
Context::Initialise(env);
context = new Context(env, _context);
AtScopeExit() { delete context; };
if (_logListener != nullptr)
logListener = new LogListener(env, _logListener);
AtScopeExit() { delete logListener; };
try {
AndroidMain(env);
} catch (...) {
LogError(std::current_exception());
}
}
gcc_visibility_default
JNIEXPORT void JNICALL
Java_org_musicpd_Bridge_shutdown(JNIEnv *, jclass)
{
if (global_instance != nullptr)
global_instance->event_loop.InjectBreak();
}
gcc_visibility_default
JNIEXPORT void JNICALL
Java_org_musicpd_Bridge_pause(JNIEnv *, jclass)
{
if (global_instance != nullptr)
for (auto &partition : global_instance->partitions)
partition.pc.LockSetPause(true);
}
gcc_visibility_default
JNIEXPORT void JNICALL
Java_org_musicpd_Bridge_playPause(JNIEnv *, jclass)
{
if (global_instance != nullptr)
for (auto &partition : global_instance->partitions)
partition.pc.LockPause();
}
gcc_visibility_default
JNIEXPORT void JNICALL
Java_org_musicpd_Bridge_playNext(JNIEnv *, jclass)
{
if (global_instance != nullptr)
BlockingCall(global_instance->event_loop, [&](){
for (auto &partition : global_instance->partitions)
if (partition.playlist.playing) {
partition.PlayNext();
}
});
}
gcc_visibility_default
JNIEXPORT void JNICALL
Java_org_musicpd_Bridge_playPrevious(JNIEnv *, jclass)
{
if (global_instance != nullptr)
BlockingCall(global_instance->event_loop, [&](){
for (auto &partition : global_instance->partitions)
if (partition.playlist.playing) {
partition.PlayPrevious();
}
});
}
#else
static inline void
MainOrThrow(int argc, char *argv[])
{
CommandLineOptions options;
ConfigData raw_config;
ParseCommandLine(argc, argv, options, raw_config);
MainConfigured(options, raw_config);
}
int
mpd_main(int argc, char *argv[])
{
MainOrThrow(argc, argv);
return EXIT_SUCCESS;
}
int
main(int argc, char *argv[]) noexcept
try {
AtScopeExit() { log_deinit(); };
#ifdef _WIN32
return win32_main(argc, argv);
#else
return mpd_main(argc, argv);
#endif
} catch (...) {
LogError(std::current_exception());
return EXIT_FAILURE;
}
#endif