コード例 #1
0
        internal static SECURITY_ATTRIBUTES GetSecurityAttributes(GCHandle securityDescriptorPinnedHandle, bool inheritHandle = false)
        {
            SECURITY_ATTRIBUTES securityAttributes = new NamedPipeNative.SECURITY_ATTRIBUTES();

            securityAttributes.InheritHandle        = inheritHandle;
            securityAttributes.NLength              = (int)Marshal.SizeOf(securityAttributes);
            securityAttributes.LPSecurityDescriptor = securityDescriptorPinnedHandle.AddrOfPinnedObject();
            return(securityAttributes);
        }
コード例 #2
0
        /// <summary>
        /// Helper method to create a PowerShell transport named pipe via native API, along
        /// with a returned .Net NamedPipeServerStream object wrapping the named pipe.
        /// </summary>
        /// <param name="pipeName">Named pipe core name.</param>
        /// <param name="securityDesc"></param>
        /// <returns>NamedPipeServerStream</returns>
        internal static NamedPipeServerStream CreateNamedPipe(
            string serverName,
            string namespaceName,
            string pipeName,
            PipeSecurity pipeSecurity)

        {
            if (serverName == null)
            {
                throw new ArgumentNullException("serverName");
            }
            if (namespaceName == null)
            {
                throw new ArgumentNullException("namespaceName");
            }
            if (pipeName == null)
            {
                throw new ArgumentNullException("pipeName");
            }


            string fullPipeName = @"\\" + serverName + @"\" + namespaceName + @"\" + pipeName;

            CommonSecurityDescriptor securityDesc = new CommonSecurityDescriptor(false, false, pipeSecurity.GetSecurityDescriptorBinaryForm(), 0);

            // Create optional security attributes based on provided PipeSecurity.
            NamedPipeNative.SECURITY_ATTRIBUTES securityAttributes = null;
            GCHandle?securityDescHandle = null;

            if (securityDesc != null)
            {
                byte[] securityDescBuffer = new byte[securityDesc.BinaryLength];
                securityDesc.GetBinaryForm(securityDescBuffer, 0);

                securityDescHandle = GCHandle.Alloc(securityDescBuffer, GCHandleType.Pinned);
                securityAttributes = NamedPipeNative.GetSecurityAttributes(securityDescHandle.Value);
            }

            if (!NamedPipeNative.WaitNamedPipe(fullPipeName, System.Threading.Timeout.Infinite))
            {
                int errorCode = Marshal.GetLastWin32Error();
                if (errorCode != ERROR_FILE_NOT_FOUND)
                {
                    throw new InvalidOperationException();
                }
            }

            // Create named pipe.
            SafePipeHandle pipeHandle = NamedPipeNative.CreateNamedPipe(
                fullPipeName,
                NamedPipeNative.PIPE_ACCESS_DUPLEX | NamedPipeNative.FILE_FLAG_OVERLAPPED,
                NamedPipeNative.PIPE_TYPE_BYTE | NamedPipeNative.PIPE_READMODE_BYTE,
                255,
                65536,
                65536,
                0,
                securityAttributes);

            int lastError = Marshal.GetLastWin32Error();

            if (securityDescHandle != null)
            {
                securityDescHandle.Value.Free();
            }

            if (pipeHandle.IsInvalid)
            {
                throw new InvalidOperationException();
            }
            // Create the .Net NamedPipeServerStream wrapper.
            try
            {
                return(new NamedPipeServerStream(
                           PipeDirection.InOut,
                           true,               // IsAsync
                           true,               // IsConnected
                           pipeHandle));
            }
            catch (Exception)
            {
                pipeHandle.Dispose();
                throw;
            }
        }