private static void ClientConnectionCallback(RemoteSessionNamedPipeServer pipeServer)
{
// Create server mediator object and begin remote session with client.
NamedPipeProcessMediator.Run(
string.Empty,
pipeServer);
}
/// <summary>
/// Creates the custom named pipe server with the given pipename.
/// </summary>
/// <param name="pipeName">The name of the pipe to create.</param>
public static void CreateCustomNamedPipeServer(string pipeName)
{
lock (s_syncObject)
{
if (_customNamedPipeServer != null && !_customNamedPipeServer.IsDisposed)
{
if (pipeName == _customNamedPipeServer.PipeName)
{
// we shouldn't recreate the server object if we're using the same pipeName
return;
}
// Dispose of the current pipe server so we can create a new one with the new pipeName
_customNamedPipeServer.Dispose();
}
if (!Platform.IsWindows)
{
int maxNameLength = (Platform.IsLinux ? _maxPipePathLengthLinux : _maxPipePathLengthMacOS) - Path.GetTempPath().Length;
if (pipeName.Length > maxNameLength)
{
throw new InvalidOperationException(
string.Format(
RemotingErrorIdStrings.CustomPipeNameTooLong,
maxNameLength,
pipeName,
pipeName.Length));
}
}
try
{
try
{
_customNamedPipeServer = new RemoteSessionNamedPipeServer(pipeName);
}
catch (IOException)
{
// Expected when named pipe server for this process already exists.
// This can happen if process has multiple AppDomains hosting PowerShell (SMA.dll).
return;
}
// Listener ended callback, used to create listening new pipe server.
_customNamedPipeServer.ListenerEnded += OnCustomNamedPipeServerEnded;
// Start the pipe server listening thread, and provide client connection callback.
_customNamedPipeServer.StartListening(ClientConnectionCallback);
}
catch (Exception)
{
_customNamedPipeServer = null;
}
}
}
private static void CreateAppDomainUnloadHandler()
{
// Subscribe to the app domain unload event.
AppDomain.CurrentDomain.DomainUnload += (sender, args) =>
{
IPCNamedPipeServerEnabled = false;
RemoteSessionNamedPipeServer namedPipeServer = IPCNamedPipeServer;
if (namedPipeServer != null)
{
try
{
// Terminate the IPC thread.
namedPipeServer.Dispose();
}
catch (ObjectDisposedException) { }
catch (Exception)
{
// Don't throw an exception on the app domain unload event thread.
}
}
};
}
/// <summary>
/// Creates the process named pipe server object singleton and
/// starts the client listening thread.
/// </summary>
internal static void CreateIPCNamedPipeServerSingleton()
{
lock (s_syncObject)
{
if (!IPCNamedPipeServerEnabled)
{
return;
}
if (IPCNamedPipeServer == null || IPCNamedPipeServer.IsDisposed)
{
try
{
try
{
IPCNamedPipeServer = CreateRemoteSessionNamedPipeServer();
}
catch (IOException)
{
// Expected when named pipe server for this process already exists.
// This can happen if process has multiple AppDomains hosting PowerShell (SMA.dll).
return;
}
// Listener ended callback, used to create listening new pipe server.
IPCNamedPipeServer.ListenerEnded += OnIPCNamedPipeServerEnded;
// Start the pipe server listening thread, and provide client connection callback.
IPCNamedPipeServer.StartListening(ClientConnectionCallback);
}
catch (Exception e)
{
CommandProcessorBase.CheckForSevereException(e);
IPCNamedPipeServer = null;
}
}
}
}
private static void CreateProcessExitHandler()
{
AppDomain.CurrentDomain.ProcessExit += (sender, args) =>
{
IPCNamedPipeServerEnabled = false;
RemoteSessionNamedPipeServer namedPipeServer = IPCNamedPipeServer;
if (namedPipeServer != null)
{
try
{
// Terminate the IPC thread.
namedPipeServer.Dispose();
}
catch (ObjectDisposedException)
{
// Ignore if object already disposed.
}
catch (Exception)
{
// Don't throw an exception on the app domain unload event thread.
}
}
};
}
private static void ClientConnectionCallback(RemoteSessionNamedPipeServer pipeServer)
{
// Create server mediator object and begin remote session with client.
NamedPipeProcessMediator.Run(
string.Empty,
pipeServer);
}
/// <summary>
/// Creates the process named pipe server object singleton and
/// starts the client listening thread.
/// </summary>
internal static void CreateIPCNamedPipeServerSingleton()
{
lock (s_syncObject)
{
if (!IPCNamedPipeServerEnabled) { return; }
if (IPCNamedPipeServer == null || IPCNamedPipeServer.IsDisposed)
{
try
{
try
{
IPCNamedPipeServer = CreateRemoteSessionNamedPipeServer();
}
catch (IOException)
{
// Expected when named pipe server for this process already exists.
// This can happen if process has multiple AppDomains hosting PowerShell (SMA.dll).
return;
}
// Listener ended callback, used to create listening new pipe server.
IPCNamedPipeServer.ListenerEnded += OnIPCNamedPipeServerEnded;
// Start the pipe server listening thread, and provide client connection callback.
IPCNamedPipeServer.StartListening(ClientConnectionCallback);
}
catch (Exception e)
{
CommandProcessorBase.CheckForSevereException(e);
IPCNamedPipeServer = null;
}
}
}
}
