/// <summary>
/// The mediator will take actions from the StdIn stream and responds to them.
/// It will replace StdIn,StdOut and StdErr stream with TextWriter.Null. This is
/// to make sure these streams are totally used by our Mediator.
/// </summary>
/// <param name="combineErrOutStream">Redirects remoting errors to the Out stream.</param>
private StdIOProcessMediator(bool combineErrOutStream) : base(exitProcessOnError: true)
{
// Create input stream reader from Console standard input stream.
// We don't use the provided Console.In TextReader because it can have
// an incorrect encoding, e.g., Hyper-V Container console where the
// TextReader has incorrect default console encoding instead of the actual
// stream encoding. This way the stream encoding is determined by the
// stream BOM as needed.
originalStdIn = new StreamReader(Console.OpenStandardInput(), true);
// Remoting errors can optionally be written to stdErr or stdOut with
// special formatting.
originalStdOut = new OutOfProcessTextWriter(Console.Out);
if (combineErrOutStream)
{
originalStdErr = new FormattedErrorTextWriter(Console.Out);
}
else
{
originalStdErr = new OutOfProcessTextWriter(Console.Error);
}
// Replacing StdIn, StdOut, StdErr with Null so that no other app messes with the
// original streams.
Console.SetIn(TextReader.Null);
Console.SetOut(TextWriter.Null);
Console.SetError(TextWriter.Null);
}
private NamedPipeProcessMediator(
RemoteSessionNamedPipeServer namedPipeServer) : base(false)
{
if (namedPipeServer == null)
{
throw new PSArgumentNullException(nameof(namedPipeServer));
}
_namedPipeServer = namedPipeServer;
// Create transport reader/writers from named pipe.
originalStdIn = namedPipeServer.TextReader;
originalStdOut = new OutOfProcessTextWriter(namedPipeServer.TextWriter);
originalStdErr = new FormattedErrorTextWriter(namedPipeServer.TextWriter);
#if !UNIX
// Flow impersonation as needed.
Utils.TryGetWindowsImpersonatedIdentity(out _windowsIdentityToImpersonate);
#endif
}