/// <summary>
/// 보안 특성 구하기
/// </summary>
/// <returns>보안 특성</returns>
private static SECURITY_ATTRIBUTE GetSecurityAttribute()
{
RawSecurityDescriptor descriptor = new RawSecurityDescriptor(ControlFlags.DiscretionaryAclPresent, null, null, null, null);
SECURITY_ATTRIBUTE securityAttribute = new SECURITY_ATTRIBUTE();
securityAttribute.Length = (uint)Marshal.SizeOf(typeof(SECURITY_ATTRIBUTE));
securityAttribute.InheritHandle = false;
byte[] byteArray = new byte[descriptor.BinaryLength];
descriptor.GetBinaryForm(byteArray, 0);
securityAttribute.SecurityDescriptor = Marshal.AllocHGlobal(byteArray.Length);
Marshal.Copy(byteArray, 0, securityAttribute.SecurityDescriptor, byteArray.Length);
return(securityAttribute);
}
private static extern SafeFileHandle CreateNamedPipe(string pipeName, uint openMode, uint pipeMode, uint maximumInstanceCount, uint outBufferSize, uint inBufferSize, uint defaultTimeOut, ref SECURITY_ATTRIBUTE securityAttribute);
////////////////////////////////////////////////////////////////////////////////////////// Instance
//////////////////////////////////////////////////////////////////////////////// Public
#region 연결 대기하기 - WaitForConnection()
/// <summary>
/// 연결 대기하기
/// </summary>
/// <returns>자식 파이프</returns>
public NamedPipe WaitForConnection()
{
if (string.IsNullOrEmpty(this.pipeName) == true || this.exitEventHandle == null)
{
Trace.WriteLine("파이프 서비스 종료");
return(null);
}
NamedPipe clientPipe = new NamedPipe();
clientPipe.pipeName = this.pipeName;
clientPipe.pipeDirection = this.pipeDirection;
SECURITY_ATTRIBUTE securityAttribute = GetSecurityAttribute();
clientPipe.pipeHandle = CreateNamedPipe
(
clientPipe.pipeName,
(uint)(this.pipeDirection | PipeDirection.FILE_FLAG_OVERLAPPED),
PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE | PIPE_WAIT,
255,
BUFFER_SIZE,
BUFFER_SIZE,
0,
ref securityAttribute
);
Marshal.FreeHGlobal(securityAttribute.SecurityDescriptor);
if (clientPipe.pipeHandle.IsInvalid)
{
Trace.WriteLine("무효한 파이프 연결");
clientPipe.Dispose();
return(null);
}
NativeOverlapped nativeOverlapped = new NativeOverlapped();
SecurityIdentifier securityIdentifier = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
EventWaitHandleSecurity eventHandleSecurity = new EventWaitHandleSecurity();
bool created;
eventHandleSecurity.AddAccessRule(new EventWaitHandleAccessRule(securityIdentifier, EventWaitHandleRights.FullControl, AccessControlType.Allow));
eventHandleSecurity.AddAccessRule(new EventWaitHandleAccessRule(securityIdentifier, EventWaitHandleRights.ChangePermissions, AccessControlType.Deny));
using (EventWaitHandle eventHandle = new EventWaitHandle(false, EventResetMode.ManualReset, null, out created, eventHandleSecurity))
{
nativeOverlapped.EventHandle = eventHandle.SafeWaitHandle.DangerousGetHandle();
ConnectNamedPipe(clientPipe.pipeHandle, ref nativeOverlapped);
int lastError = Marshal.GetLastWin32Error();
if (lastError == 997)
{
int completeCode = 0;
IntPtr[] waitHandleArray = new IntPtr[]
{
eventHandle.SafeWaitHandle.DangerousGetHandle(),
this.exitEventHandle.SafeWaitHandle.DangerousGetHandle()
};
completeCode = WaitForMultipleObjects(waitHandleArray.Length, waitHandleArray, false, -1);
if (completeCode == 0)
{
}
else if (completeCode == 1)
{
Trace.WriteLine("파이프 서비스 종료 (리소스 해제)");
clientPipe.Dispose();
return(null);
}
}
else if (lastError != 535)
{
Trace.WriteLine("파이프 연결 에러 : " + lastError);
clientPipe.Dispose();
return(null);
}
else
{
Debug.WriteLine("연결되었습니다.");
}
}
clientPipe.needToDisconnect = true;
FileAccess fileAccess = GetFileAccess(clientPipe.pipeDirection);
clientPipe.pipeStream = new FileStream(clientPipe.pipeHandle, fileAccess, (int)BUFFER_SIZE, true);
if (clientPipe.pipeStream == null)
{
Trace.WriteLine("파이프 파일 스트림이 null 입니다.");
clientPipe.Dispose();
return(null);
}
return(clientPipe);
}
