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|
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Duplicati.Server
{
public class Program
{
/// <summary>
/// The path to the directory that contains the main executable
/// </summary>
public static readonly string StartupPath = Duplicati.Library.AutoUpdater.UpdaterManager.InstalledBaseDir;
/// <summary>
/// The name of the environment variable that holds the path to the data folder used by Duplicati
/// </summary>
public static readonly string DATAFOLDER_ENV_NAME = Duplicati.Library.AutoUpdater.AutoUpdateSettings.AppName.ToUpper() + "_HOME";
/// <summary>
/// The environment variable that holdes the database key used to encrypt the SQLite database
/// </summary>
public static readonly string DB_KEY_ENV_NAME = Duplicati.Library.AutoUpdater.AutoUpdateSettings.AppName.ToUpper() + "_DB_KEY";
/// <summary>
/// Gets the folder where Duplicati data is stored
/// </summary>
public static string DATAFOLDER { get { return Library.Utility.Utility.AppendDirSeparator(Environment.ExpandEnvironmentVariables("%" + DATAFOLDER_ENV_NAME + "%").TrimStart('"').TrimEnd('"')); } }
/// <summary>
/// The single instance
/// </summary>
public static SingleInstance Instance = null;
/// <summary>
/// A flag indicating if database encryption is in use
/// </summary>
public static bool UseDatabaseEncryption;
/// <summary>
/// This is the only access to the database
/// </summary>
public static Database.Connection DataConnection;
/// <summary>
/// This is the lock to be used before manipulating the shared resources
/// </summary>
public static object MainLock = new object();
/// <summary>
/// This is the scheduling thread
/// </summary>
public static Scheduler Scheduler;
/// <summary>
/// This is the working thread
/// </summary>
public static Duplicati.Library.Utility.WorkerThread<Runner.IRunnerData> WorkThread;
/// <summary>
/// The thread running the ping-pong handler
/// </summary>
public static System.Threading.Thread PingPongThread;
/// <summary>
/// The path to the file that contains the current database
/// </summary>
public static string DatabasePath;
/// <summary>
/// The controller interface for pause/resume and throttle options
/// </summary>
public static LiveControls LiveControl;
/// <summary>
/// The application exit event
/// </summary>
public static System.Threading.ManualResetEvent ApplicationExitEvent;
/// <summary>
/// The webserver instance
/// </summary>
public static WebServer.Server WebServer;
/// <summary>
/// The update poll thread.
/// </summary>
public static UpdatePollThread UpdatePoller;
/// <summary>
/// An event that is set once the server is ready to respond to requests
/// </summary>
public static System.Threading.ManualResetEvent ServerStartedEvent = new System.Threading.ManualResetEvent(false);
/// <summary>
/// The status event signaler, used to controll long polling of status updates
/// </summary>
public static EventPollNotify StatusEventNotifyer = new EventPollNotify();
/// <summary>
/// A delegate method for creating a copy of the current progress state
/// </summary>
public static Func<Duplicati.Server.Serialization.Interface.IProgressEventData> GenerateProgressState;
/// <summary>
/// An event ID that increases whenever the database is updated
/// </summary>
public static long LastDataUpdateID = 0;
/// <summary>
/// An event ID that increases whenever a notification is updated
/// </summary>
public static long LastNotificationUpdateID = 0;
/// <summary>
/// The log redirect handler
/// </summary>
public static LogWriteHandler LogHandler = new LogWriteHandler();
private static System.Threading.Timer PurgeTempFilesTimer = null;
public static int ServerPort
{
get
{
return WebServer.Port;
}
}
public static bool IsFirstRun
{
get { return DataConnection.ApplicationSettings.IsFirstRun; }
set { DataConnection.ApplicationSettings.IsFirstRun = value; }
}
public static bool ServerPortChanged
{
get { return DataConnection.ApplicationSettings.ServerPortChanged; }
set { DataConnection.ApplicationSettings.ServerPortChanged = value; }
}
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
public static int Main(string[] args)
{
return Duplicati.Library.AutoUpdater.UpdaterManager.RunFromMostRecent(typeof(Program).GetMethod("RealMain"), args, Duplicati.Library.AutoUpdater.AutoUpdateStrategy.Never);
}
public static void RealMain(string[] args)
{
//If we are on Windows, append the bundled "win-tools" programs to the search path
//We add it last, to allow the user to override with other versions
if (!Library.Utility.Utility.IsClientLinux)
{
Environment.SetEnvironmentVariable("PATH",
Environment.GetEnvironmentVariable("PATH") +
System.IO.Path.PathSeparator.ToString() +
System.IO.Path.Combine(
System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location),
"win-tools")
);
}
//If this executable is invoked directly, write to console, otherwise throw exceptions
bool writeConsole = System.Reflection.Assembly.GetEntryAssembly() == System.Reflection.Assembly.GetExecutingAssembly();
//If we are on windows we encrypt the database by default
//We do not encrypt on Linux as most distros use a SQLite library without encryption support,
//Linux users can use an encrypted home folder, or install a SQLite library with encryption support
if (!Library.Utility.Utility.IsClientLinux && string.IsNullOrEmpty(Environment.GetEnvironmentVariable(DB_KEY_ENV_NAME)))
{
//Note that the password here is a default password and public knowledge
//
//The purpose of this is to prevent casual read of the database, as well
// as protect from harddisk string scans, not to protect from determined
// attacks.
//
//If you desire better security, start Duplicati once with the commandline option
// --unencrypted-database to decrypt the database.
//Then set the environment variable DUPLICATI_DB_KEY to the desired key,
// and run Duplicati again without the --unencrypted-database option
// to re-encrypt it with the new key
//
//If you change the key, please note that you need to supply the same
// key when restoring the setup, as the setup being backed up will
// be encrypted as well.
Environment.SetEnvironmentVariable(DB_KEY_ENV_NAME, Library.AutoUpdater.AutoUpdateSettings.AppName + "_Key_42");
}
//Find commandline options here for handling special startup cases
Dictionary<string, string> commandlineOptions = Duplicati.Library.Utility.CommandLineParser.ExtractOptions(new List<string>(args));
foreach(string s in args)
if (
s.Equals("help", StringComparison.InvariantCultureIgnoreCase) ||
s.Equals("/help", StringComparison.InvariantCultureIgnoreCase) ||
s.Equals("usage", StringComparison.InvariantCultureIgnoreCase) ||
s.Equals("/usage", StringComparison.InvariantCultureIgnoreCase))
commandlineOptions["help"] = "";
//If the commandline issues --help, just stop here
if (commandlineOptions.ContainsKey("help"))
{
if (writeConsole)
{
Console.WriteLine(Strings.Program.HelpDisplayDialog);
foreach(Library.Interface.ICommandLineArgument arg in SupportedCommands)
Console.WriteLine(Strings.Program.HelpDisplayFormat(arg.Name, arg.LongDescription));
return;
}
else
{
throw new Exception("Server invoked with --help");
}
}
#if DEBUG
//Log various information in the logfile
if (!commandlineOptions.ContainsKey("log-file"))
{
commandlineOptions["log-file"] = System.IO.Path.Combine(StartupPath, "Duplicati.debug.log");
commandlineOptions["log-level"] = Duplicati.Library.Logging.LogMessageType.Profiling.ToString();
}
#endif
//Set the %DUPLICATI_HOME% env variable, if it is not already set
if (string.IsNullOrEmpty(Environment.GetEnvironmentVariable(DATAFOLDER_ENV_NAME)))
{
#if DEBUG
//debug mode uses a lock file located in the app folder
Environment.SetEnvironmentVariable(DATAFOLDER_ENV_NAME, StartupPath);
#else
bool portableMode = commandlineOptions.ContainsKey("portable-mode") ? Library.Utility.Utility.ParseBool(commandlineOptions["portable-mode"], true) : false;
if (portableMode)
{
//Portable mode uses a data folder in the application home dir
Environment.SetEnvironmentVariable(DATAFOLDER_ENV_NAME, System.IO.Path.Combine(StartupPath, "data"));
}
else
{
//Normal release mode uses the systems "Application Data" folder
Environment.SetEnvironmentVariable(DATAFOLDER_ENV_NAME, System.IO.Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), Library.AutoUpdater.AutoUpdateSettings.AppName));
}
#endif
}
try
{
try
{
//This will also create Program.DATAFOLDER if it does not exist
Instance = new SingleInstance(Duplicati.Library.AutoUpdater.AutoUpdateSettings.AppName, Program.DATAFOLDER);
}
catch (Exception ex)
{
if (writeConsole)
{
Console.WriteLine(Strings.Program.StartupFailure(ex));
return;
}
else
{
throw new Exception(Strings.Program.StartupFailure(ex));
}
}
if (!Instance.IsFirstInstance)
{
if (writeConsole)
{
Console.WriteLine(Strings.Program.AnotherInstanceDetected);
return;
}
else
{
throw new SingleInstance.MultipleInstanceException(Strings.Program.AnotherInstanceDetected);
}
}
// Setup the log redirect
Duplicati.Library.Logging.Log.CurrentLog = Program.LogHandler;
if (commandlineOptions.ContainsKey("log-file"))
{
if (System.IO.File.Exists(commandlineOptions["log-file"]))
System.IO.File.Delete(commandlineOptions["log-file"]);
var loglevel = Duplicati.Library.Logging.LogMessageType.Error;
if (commandlineOptions.ContainsKey("log-level"))
Enum.TryParse<Duplicati.Library.Logging.LogMessageType>(commandlineOptions["log-level"], true, out loglevel);
Program.LogHandler.SetServerFile(commandlineOptions["log-file"], loglevel);
}
Version sqliteVersion = new Version((string)Duplicati.Library.SQLiteHelper.SQLiteLoader.SQLiteConnectionType.GetProperty("SQLiteVersion").GetValue(null, null));
if (sqliteVersion < new Version(3, 6, 3))
{
if (writeConsole)
{
//The official Mono SQLite provider is also broken with less than 3.6.3
Console.WriteLine(Strings.Program.WrongSQLiteVersion(sqliteVersion, "3.6.3"));
return;
}
else
{
throw new Exception(Strings.Program.WrongSQLiteVersion(sqliteVersion, "3.6.3"));
}
}
//Create the connection instance
System.Data.IDbConnection con = (System.Data.IDbConnection)Activator.CreateInstance(Duplicati.Library.SQLiteHelper.SQLiteLoader.SQLiteConnectionType);
try
{
DatabasePath = System.IO.Path.Combine(Program.DATAFOLDER, "Duplicati-server.sqlite");
if (!System.IO.Directory.Exists(System.IO.Path.GetDirectoryName(DatabasePath)))
System.IO.Directory.CreateDirectory(System.IO.Path.GetDirectoryName(DatabasePath));
#if DEBUG
//Default is to not use encryption for debugging
Program.UseDatabaseEncryption = commandlineOptions.ContainsKey("unencrypted-database") ? !Library.Utility.Utility.ParseBool(commandlineOptions["unencrypted-database"], true) : false;
#else
Program.UseDatabaseEncryption = commandlineOptions.ContainsKey("unencrypted-database") ? !Library.Utility.Utility.ParseBool(commandlineOptions["unencrypted-database"], true) : true;
#endif
con.ConnectionString = "Data Source=" + DatabasePath;
//Attempt to open the database, handling any encryption present
OpenDatabase(con);
Duplicati.Library.SQLiteHelper.DatabaseUpgrader.UpgradeDatabase(con, DatabasePath, typeof(Duplicati.Server.Database.Connection));
}
catch (Exception ex)
{
//Unwrap the reflection exceptions
if (ex is System.Reflection.TargetInvocationException && ex.InnerException != null)
ex = ex.InnerException;
if (writeConsole)
{
Console.WriteLine(Strings.Program.DatabaseOpenError(ex.Message));
return;
}
else
{
throw new Exception(Strings.Program.DatabaseOpenError(ex.Message), ex);
}
}
DataConnection = new Duplicati.Server.Database.Connection(con);
if (!DataConnection.ApplicationSettings.FixedInvalidBackupId)
DataConnection.FixInvalidBackupId();
if (commandlineOptions.ContainsKey("webservice-password"))
Program.DataConnection.ApplicationSettings.SetWebserverPassword(commandlineOptions["webservice-password"]);
ApplicationExitEvent = new System.Threading.ManualResetEvent(false);
Duplicati.Library.AutoUpdater.UpdaterManager.OnError += (Exception obj) =>
{
Program.DataConnection.LogError(null, "Error in updater", obj);
};
UpdatePoller = new UpdatePollThread();
DateTime lastPurge = new DateTime(0);
System.Threading.TimerCallback purgeTempFilesCallback = (x) => {
try
{
if (Math.Abs((DateTime.Now - lastPurge).TotalHours) < 23)
return;
lastPurge = DateTime.Now;
foreach(var e in Program.DataConnection.GetTempFiles().Where((f) => f.Expires < DateTime.Now))
{
try
{
if (System.IO.File.Exists(e.Path))
System.IO.File.Delete(e.Path);
}
catch (Exception ex)
{
Program.DataConnection.LogError(null, string.Format("Failed to delete temp file: {0}", e.Path), ex);
}
Program.DataConnection.DeleteTempFile(e.ID);
}
Duplicati.Library.Utility.TempFile.RemoveOldApplicationTempFiles((path, ex) => {
Program.DataConnection.LogError(null, string.Format("Failed to delete temp file: {0}", path), ex);
});
}
catch (Exception ex)
{
Program.DataConnection.LogError(null, "Failed during temp file cleanup", ex);
}
};
try
{
PurgeTempFilesTimer = new System.Threading.Timer(purgeTempFilesCallback, null, TimeSpan.FromHours(1), TimeSpan.FromDays(1));
}
catch (ArgumentOutOfRangeException aex)
{
//Bugfix for older Mono, slightly more resources used to avoid large values in the period field
PurgeTempFilesTimer = new System.Threading.Timer(purgeTempFilesCallback, null, TimeSpan.FromHours(1), TimeSpan.FromHours(1));
}
LiveControl = new LiveControls(DataConnection.ApplicationSettings);
LiveControl.StateChanged += new EventHandler(LiveControl_StateChanged);
LiveControl.ThreadPriorityChanged += new EventHandler(LiveControl_ThreadPriorityChanged);
LiveControl.ThrottleSpeedChanged += new EventHandler(LiveControl_ThrottleSpeedChanged);
Program.WorkThread = new Duplicati.Library.Utility.WorkerThread<Runner.IRunnerData>((x) =>
{
Runner.Run(x, true);
}, LiveControl.State == LiveControls.LiveControlState.Paused);
Program.Scheduler = new Scheduler(WorkThread);
Program.WorkThread.StartingWork += (worker, task) => { SignalNewEvent(null, null); };
Program.WorkThread.CompletedWork += (worker, task) => { SignalNewEvent(null, null); };
Program.WorkThread.WorkQueueChanged += (worker) => { SignalNewEvent(null, null); };
Program.Scheduler.NewSchedule += new EventHandler(SignalNewEvent);
Program.WorkThread.OnError += (worker, task, exception) => { Program.DataConnection.LogError(task == null ? null : task.BackupID, "Error in worker", exception); };
Program.WebServer = new WebServer.Server(commandlineOptions);
if (Program.WebServer.Port != DataConnection.ApplicationSettings.LastWebserverPort)
ServerPortChanged = true;
DataConnection.ApplicationSettings.LastWebserverPort = Program.WebServer.Port;
if (Library.Utility.Utility.ParseBoolOption(commandlineOptions, "ping-pong-keepalive"))
{
Program.PingPongThread = new System.Threading.Thread(PingPongMethod);
Program.PingPongThread.IsBackground = true;
Program.PingPongThread.Start();
}
ServerStartedEvent.Set();
ApplicationExitEvent.WaitOne();
}
catch (SingleInstance.MultipleInstanceException mex)
{
System.Diagnostics.Trace.WriteLine(Strings.Program.SeriousError(mex.ToString()));
if (writeConsole)
Console.WriteLine(Strings.Program.SeriousError(mex.ToString()));
else
throw mex;
}
catch (Exception ex)
{
System.Diagnostics.Trace.WriteLine(Strings.Program.SeriousError(ex.ToString()));
if (writeConsole)
Console.WriteLine(Strings.Program.SeriousError(ex.ToString()));
else
throw new Exception(Strings.Program.SeriousError(ex.ToString()), ex);
}
finally
{
StatusEventNotifyer.SignalNewEvent();
if (UpdatePoller != null)
UpdatePoller.Terminate();
if (Scheduler != null)
Scheduler.Terminate(true);
if (WorkThread != null)
WorkThread.Terminate(true);
if (Instance != null)
Instance.Dispose();
if (PurgeTempFilesTimer != null)
PurgeTempFilesTimer.Dispose();
if (PingPongThread != null)
try { PingPongThread.Abort(); }
catch { }
if (LogHandler != null)
LogHandler.Dispose();
}
}
private static void SignalNewEvent(object sender, EventArgs e)
{
StatusEventNotifyer.SignalNewEvent();
}
/// <summary>
/// Handles a change in the LiveControl and updates the Runner
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private static void LiveControl_ThreadPriorityChanged(object sender, EventArgs e)
{
StatusEventNotifyer.SignalNewEvent();
}
/// <summary>
/// Handles a change in the LiveControl and updates the Runner
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private static void LiveControl_ThrottleSpeedChanged(object sender, EventArgs e)
{
StatusEventNotifyer.SignalNewEvent();
}
/// <summary>
/// This event handler updates the trayicon menu with the current state of the runner.
/// </summary>
static void LiveControl_StateChanged(object sender, EventArgs e)
{
switch (LiveControl.State)
{
case LiveControls.LiveControlState.Paused:
{
WorkThread.Pause();
var t = WorkThread.CurrentTask;
if (t != null)
t.Pause();
break;
}
case LiveControls.LiveControlState.Running:
{
WorkThread.Resume();
var t = WorkThread.CurrentTask;
if (t != null)
t.Resume();
break;
}
}
StatusEventNotifyer.SignalNewEvent();
}
/// <summary>
/// Returns a localized name for a task type
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
public static string LocalizeTaskType(Duplicati.Server.Serialization.DuplicatiOperation type)
{
switch (type)
{
case Duplicati.Server.Serialization.DuplicatiOperation.Backup:
return Strings.TaskType.FullBackup;
case Duplicati.Server.Serialization.DuplicatiOperation.List:
return Strings.TaskType.IncrementalBackup;
case Duplicati.Server.Serialization.DuplicatiOperation.Remove:
return Strings.TaskType.ListActualFiles;
case Duplicati.Server.Serialization.DuplicatiOperation.Verify:
return Strings.TaskType.ListBackupEntries;
case Duplicati.Server.Serialization.DuplicatiOperation.Restore:
return Strings.TaskType.ListBackups;
default:
return type.ToString();
}
}
/// <summary>
/// Helper method with logic to handle opening a database in possibly encrypted format
/// </summary>
/// <param name="con">The SQLite connection object</param>
internal static void OpenDatabase(System.Data.IDbConnection con)
{
bool noEncryption = !Program.UseDatabaseEncryption;
string password = Environment.GetEnvironmentVariable(DB_KEY_ENV_NAME);
System.Reflection.MethodInfo setPwdMethod = con.GetType().GetMethod("SetPassword", new Type[] { typeof(string) });
string attemptedPassword;
if (noEncryption || string.IsNullOrEmpty(password))
attemptedPassword = null; //No encryption specified, attempt to open without
else
attemptedPassword = password; //Encryption specified, attempt to open with
if (setPwdMethod != null)
setPwdMethod.Invoke(con, new object[] { attemptedPassword });
try
{
//Attempt to open in preferred state
con.Open();
// Do a dummy query to make sure we have a working db
using (var cmd = con.CreateCommand())
{
cmd.CommandText = "SELECT COUNT(*) FROM SQLITE_MASTER";
cmd.ExecuteScalar();
}
}
catch
{
try
{
//We can't try anything else without a password
if (string.IsNullOrEmpty(password))
throw;
//Open failed, now try the reverse
if (attemptedPassword == null)
attemptedPassword = password;
else
attemptedPassword = null;
con.Close();
setPwdMethod.Invoke(con, new object[] { attemptedPassword });
con.Open();
// Do a dummy query to make sure we have a working db
using (var cmd = con.CreateCommand())
{
cmd.CommandText = "SELECT COUNT(*) FROM SQLITE_MASTER";
cmd.ExecuteScalar();
}
}
catch
{
try { con.Close(); }
catch { }
}
//If the db is not open now, it won't open
if (con.State != System.Data.ConnectionState.Open)
throw; //Report original error
//The open method succeeded with the non-default method, now change the password
System.Reflection.MethodInfo changePwdMethod = con.GetType().GetMethod("ChangePassword", new Type[] { typeof(string) });
changePwdMethod.Invoke(con, new object[] { noEncryption ? null : password });
}
}
private static void PingPongMethod()
{
var rd = new System.IO.StreamReader(Console.OpenStandardInput());
var wr = new System.IO.StreamWriter(Console.OpenStandardOutput());
while (rd.ReadLine() != null)
{
wr.WriteLine("pong");
wr.Flush();
}
}
/// <summary>
/// Gets a list of all supported commandline options
/// </summary>
public static Library.Interface.ICommandLineArgument[] SupportedCommands
{
get
{
return new Duplicati.Library.Interface.ICommandLineArgument[] {
new Duplicati.Library.Interface.CommandLineArgument("help", Duplicati.Library.Interface.CommandLineArgument.ArgumentType.Boolean, Strings.Program.HelpCommandDescription, Strings.Program.HelpCommandDescription),
new Duplicati.Library.Interface.CommandLineArgument("unencrypted-database", Duplicati.Library.Interface.CommandLineArgument.ArgumentType.Boolean, Strings.Program.UnencrypteddatabaseCommandDescription, Strings.Program.UnencrypteddatabaseCommandDescription),
new Duplicati.Library.Interface.CommandLineArgument("portable-mode", Duplicati.Library.Interface.CommandLineArgument.ArgumentType.Boolean, Strings.Program.PortablemodeCommandDescription, Strings.Program.PortablemodeCommandDescription),
new Duplicati.Library.Interface.CommandLineArgument("log-file", Duplicati.Library.Interface.CommandLineArgument.ArgumentType.Path, Strings.Program.LogfileCommandDescription, Strings.Program.LogfileCommandDescription),
new Duplicati.Library.Interface.CommandLineArgument("log-level", Duplicati.Library.Interface.CommandLineArgument.ArgumentType.Enumeration, Strings.Program.LoglevelCommandDescription, Strings.Program.LoglevelCommandDescription, "Warning", null, Enum.GetNames(typeof(Duplicati.Library.Logging.LogMessageType))),
new Duplicati.Library.Interface.CommandLineArgument(Duplicati.Server.WebServer.Server.OPTION_WEBROOT, Duplicati.Library.Interface.CommandLineArgument.ArgumentType.Path, Strings.Program.WebserverWebrootDescription, Strings.Program.WebserverWebrootDescription, Duplicati.Server.WebServer.Server.DEFAULT_OPTION_WEBROOT),
new Duplicati.Library.Interface.CommandLineArgument(Duplicati.Server.WebServer.Server.OPTION_PORT, Duplicati.Library.Interface.CommandLineArgument.ArgumentType.String, Strings.Program.WebserverPortDescription, Strings.Program.WebserverPortDescription, Duplicati.Server.WebServer.Server.DEFAULT_OPTION_PORT.ToString()),
new Duplicati.Library.Interface.CommandLineArgument(Duplicati.Server.WebServer.Server.OPTION_INTERFACE, Duplicati.Library.Interface.CommandLineArgument.ArgumentType.String, Strings.Program.WebserverInterfaceDescription, Strings.Program.WebserverInterfaceDescription, Duplicati.Server.WebServer.Server.DEFAULT_OPTION_INTERFACE),
new Duplicati.Library.Interface.CommandLineArgument("webservice-password", Duplicati.Library.Interface.CommandLineArgument.ArgumentType.Password, Strings.Program.WebserverPasswordDescription, Strings.Program.WebserverPasswordDescription),
new Duplicati.Library.Interface.CommandLineArgument("ping-pong-keepalive", Duplicati.Library.Interface.CommandLineArgument.ArgumentType.Boolean, Strings.Program.PingpongkeepaliveShort, Strings.Program.PingpongkeepaliveLong),
};
}
}
}
}
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