901 lines
30 KiB
C++
901 lines
30 KiB
C++
#include "mbftpch.h"
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#include "nullmdm.h"
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// #undef TRACE_OUT
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// #define TRACE_OUT WARNING_OUT
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BYTE g_szNULLMStartString[] = "NULLMDM";
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ULONG g_nConnID = 0;
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DWORD __stdcall TPhysWorkerThreadProc(void *lpv);
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CNullModem::CNullModem(HINSTANCE hDllInst)
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:
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m_fInitialized(FALSE),
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m_hDllInst(hDllInst),
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m_pfnCallback(NULL),
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m_fListening(FALSE),
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m_hwnd(NULL),
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m_nTransportID(0),
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m_nConnectionID(0),
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m_dwThreadID(0),
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m_hThread(NULL),
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m_hevtOverlapped(NULL),
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m_dwEventMask(0),
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m_fCommPortInUse(FALSE)
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{
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::ZeroMemory(&m_Line, sizeof(m_Line));
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::ZeroMemory(&m_Overlapped, sizeof(m_Overlapped));
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::ZeroMemory(&m_DefaultTimeouts, sizeof(m_DefaultTimeouts));
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m_hevtOverlapped = ::CreateEvent(NULL, TRUE, FALSE, NULL); // manual reset
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ASSERT(NULL != m_hevtOverlapped);
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}
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CNullModem::~CNullModem(void)
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{
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if (m_fInitialized)
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{
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TPhysTerminate();
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}
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if (NULL != m_hevtOverlapped)
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{
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::CloseHandle(m_hevtOverlapped);
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}
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}
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//////////////////////////////////////////////////////////////////////////////
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// TPhysInitialize
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//////////////////////////////////////////////////////////////////////////////
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TPhysicalError CNullModem::TPhysInitialize
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(
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TPhysCallback callback,
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UINT nTransportID
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)
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{
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const char *pszNULLMClassName = "COMMWndClass";
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TPhysicalError rc = TPHYS_SUCCESS;
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TRACE_OUT(("TPhysInitialize"));
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//
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// If we have already been initialized then this is a reinit call from
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// the node controller so just do nothing.
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//
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if (! m_fInitialized)
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{
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//
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// zero out the SESSION INFO structure
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//
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::ZeroMemory(&m_Line, sizeof(m_Line));
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//
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// Store control information
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//
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m_pfnCallback = callback;
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m_nTransportID = nTransportID;
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m_fInitialized = TRUE;
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m_nConnectionID = ++g_nConnID;
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//
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// Create a window so we can decouple to the node controller context
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// Register the main window class. Since it is invisible, leave
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// the wndclass structure sparse.
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//
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WNDCLASS wc;
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::ZeroMemory(&wc, sizeof(wc));
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wc.style = 0;
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wc.lpfnWndProc = TPhysWndProc;
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wc.cbClsExtra = 0;
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wc.cbWndExtra = 0;
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wc.hInstance = m_hDllInst;
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wc.hIcon = NULL;
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wc.hCursor = NULL;
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wc.hbrBackground = NULL;
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wc.lpszMenuName = NULL;
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wc.lpszClassName = pszNULLMClassName;
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::RegisterClass(&wc);
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//
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// Create the main window.
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//
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m_hwnd = ::CreateWindow(
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pszNULLMClassName, // See RegisterClass() call.
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NULL, // It's invisible!
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0, // Window style.
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0, // Default horizontal position.
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0, // Default vertical position.
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0, // Default width.
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0, // Default height.
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NULL, // No parent.
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NULL, // No menu.
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m_hDllInst, // This instance owns this window.
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NULL // Pointer not needed.
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);
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if (NULL == m_hwnd)
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{
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ERROR_OUT(( "Failed to create wnd"));
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return(TPHYS_RESULT_FAIL);
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}
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// rc = g_lpfnPTPhysicalInit(TPhysDriverCallback, NULL);
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ASSERT(TPHYS_SUCCESS == rc);
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}
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return rc;
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}
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//////////////////////////////////////////////////////////////////////////////////
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// TPhysTerminate
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//
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// The node controller is shutting down
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// Destroy our window and clean up transports.
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//////////////////////////////////////////////////////////////////////////////////
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TPhysicalError CNullModem::TPhysTerminate(void)
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{
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TRACE_OUT(("TPhysTerminate"));
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if (! m_fInitialized)
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{
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return(TPHYS_RESULT_NOT_INITIALIZED);
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}
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//
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// Clean up the PSTN transport
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//
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// g_lpfnPTPhysicalCleanup();
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//
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// Destroy the window
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//
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if (NULL != m_hwnd)
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{
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::DestroyWindow(m_hwnd);
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m_hwnd = NULL;
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}
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m_pfnCallback = NULL;
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m_nTransportID = 0;
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m_fInitialized = FALSE;
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return(TPHYS_SUCCESS);
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}
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//////////////////////////////////////////////////////////////////////////////
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// TPhysConnectRequest
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//
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// The node controller wants to place a call and has determined that it
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// first needs a physical modem connection. Make a call and flag an
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// outgoing call so that when the call comes active we can tell the modem
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// transport to begin negotiation.
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//////////////////////////////////////////////////////////////////////////////
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TPhysicalError CNullModem::TPhysConnectRequest(LPSTR pszComPort)
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{
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TPhysicalError rc = TPHYS_SUCCESS;
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HANDLE hCommLink;
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DCB dcb;
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DWORD dwWritten;
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TRACE_OUT(("TPhysConnectRequest"));
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if (! m_fInitialized)
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{
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ERROR_OUT(("NULL MODEM OOB not initialized"));
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return TPHYS_RESULT_NOT_INITIALIZED;
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}
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//
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// Select a comm port for the call.
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//
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if (CALL_STATE_IDLE == m_Line.eCallState || CALL_STATE_DROP == m_Line.eCallState)
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{
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//
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// Also prime our local copy of the conninfo structure for use in callbacks
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//
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m_Line.connInfo.resultCode = 0;
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m_Line.connInfo.connectionID = m_nConnectionID;
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}
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else
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{
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ERROR_OUT(("No comm port is available"));
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return TPHYS_RESULT_COMM_PORT_BUSY;
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}
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// lonchanc: From now on, we can bail out thru the common exit point
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// because the cleanup checks for m_fCommPortInUse.
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//
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// Only alow one at at time
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//
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// lonchanc: g_COMM_Thread_Users is starting from -1
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// why can we simply use a flag???
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if (m_fCommPortInUse)
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{
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ERROR_OUT(("TPhysConnectRequest: Waiting for a previous null mode connection"));
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rc = TPHYS_RESULT_WAITING_FOR_CONNECTION;
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goto bail;
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}
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m_fCommPortInUse = TRUE;
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//
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// Open the comm port
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//
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hCommLink = ::CreateFile(pszComPort,
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GENERIC_READ | GENERIC_WRITE,
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0, // exclusive access
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NULL, // no security attrs
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OPEN_EXISTING,
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FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, // overlapped I/O
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NULL );
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if (hCommLink == INVALID_HANDLE_VALUE)
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{
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ERROR_OUT(("TPhysConnectRequest: CreateFile failed. err=%d", ::GetLastError()));
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rc = TPHYS_RESULT_COMM_PORT_BUSY;
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goto bail;
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}
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m_Line.hCommLink = hCommLink;
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//
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// remember the default timeouts
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//
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::GetCommTimeouts(hCommLink, &m_DefaultTimeouts);
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//
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// Let the other side know that we are trying to connect
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//
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if (! ::EscapeCommFunction(hCommLink, SETDTR))
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{
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ERROR_OUT(("TPhysConnectRequest: Unable to Set DTR: err=%d", ::GetLastError()));
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}
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::ZeroMemory(&m_Overlapped, sizeof(m_Overlapped));
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m_Overlapped.hEvent = m_hevtOverlapped;
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m_dwEventMask = 0;
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::ResetEvent(m_hevtOverlapped);
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if (! ::WriteFile(hCommLink, g_szNULLMStartString, sizeof(g_szNULLMStartString),
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&dwWritten, &m_Overlapped))
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{
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DWORD dwErr = ::GetLastError();
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if (ERROR_IO_PENDING != dwErr)
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{
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ERROR_OUT(("TPhysConnectRequest: WriteFile failed. err=%d", dwErr));
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::ResetEvent(m_hevtOverlapped);
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rc = TPHYS_RESULT_COMM_PORT_BUSY;
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goto bail;
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}
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else
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{
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DWORD dwWait = ::WaitForSingleObject(m_hevtOverlapped, INFINITE);
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BOOL fRet = ::GetOverlappedResult(hCommLink, &m_Overlapped, &dwWritten, TRUE);
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ASSERT(fRet);
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ASSERT(dwWritten == sizeof(g_szNULLMStartString));
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}
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}
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else
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{
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ASSERT(dwWritten == sizeof(g_szNULLMStartString));
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}
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::ResetEvent(m_hevtOverlapped);
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//
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// Get the default dcb
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//
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::ZeroMemory(&dcb, sizeof(dcb));
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::GetCommState(hCommLink, &dcb);
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dcb.BaudRate = 19200; // Default: BaudRate
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//
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// Set our state so we can get notification in the comm port
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//
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dcb.DCBlength = sizeof(DCB);
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dcb.fBinary = 1; // binary mode, no EOF check
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dcb.fParity = 0; // enable parity checking
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dcb.fOutxCtsFlow = 1; // CTS output flow control
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dcb.fOutxDsrFlow = 0; // DSR output flow control
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dcb.fDtrControl = DTR_CONTROL_ENABLE; // DTR flow control type
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dcb.fDsrSensitivity = 0; // DSR sensitivity
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dcb.fTXContinueOnXoff = 0; // XOFF continues Tx
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dcb.fOutX = 0; // XON/XOFF out flow control
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dcb.fInX = 0; // XON/XOFF in flow control
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dcb.fErrorChar = 0; // enable error replacement
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dcb.fNull = 0; // enable null stripping
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dcb.fRtsControl = RTS_CONTROL_HANDSHAKE;// RTS flow control
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dcb.XonLim = 0; // transmit XON threshold
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dcb.XoffLim = 0; // transmit XOFF threshold
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dcb.fErrorChar = 0; // enable error replacement
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dcb.fNull = 0; // enable null stripping
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dcb.fAbortOnError = 0; // abort reads/writes on error
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::SetCommState(hCommLink, &dcb);
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::PurgeComm(hCommLink, PURGE_TXABORT | PURGE_RXABORT | PURGE_TXCLEAR | PURGE_RXCLEAR);
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m_Line.eCallState = CALL_STATE_MAKE;
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m_Line.hevtCall = m_hevtOverlapped;
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m_Line.pstnHandle = (PHYSICAL_HANDLE) hCommLink;
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m_Line.fCaller = TRUE;
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if (! ::SetCommMask(hCommLink,
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EV_RXCHAR | // Any Character received
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EV_CTS | // CTS changed state
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EV_DSR | // DSR changed state
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EV_RLSD| // RLSD changed state
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EV_RXFLAG)) // Certain character
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{
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ERROR_OUT(("TPhysConnectRequest: Unable to SetCommMask: err=%d", ::GetLastError()));
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}
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::ZeroMemory(&m_Overlapped, sizeof(m_Overlapped));
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m_Overlapped.hEvent = m_hevtOverlapped;
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m_dwEventMask = 0;
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::ResetEvent(m_hevtOverlapped);
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if (! ::WaitCommEvent(hCommLink, &m_dwEventMask, &m_Overlapped))
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{
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DWORD dwErr = ::GetLastError();
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if (ERROR_IO_PENDING != dwErr)
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{
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ERROR_OUT(("TPhysConnectRequest: WaitCommEvent failed, err=%d", dwErr));
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m_fCommPortInUse = FALSE;
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}
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}
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#if 1
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WorkerThreadProc();
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#else
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//
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// If the comm thread doesn't exist, create it now.
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//
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// lonchanc: I am not sure that the thread will exist, because
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// the while loop inside the thread will exit if m_fCommPortInUse is false.
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// If m_fCommPortInUse is true, then we should bail out already.
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//
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ASSERT(NULL == m_hThread);
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//
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// We need to create another thread that will wait on comm events.
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//
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m_hThread = ::CreateThread(NULL, 0, TPhysWorkerThreadProc, this, 0, &m_dwThreadID);
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ASSERT(NULL != m_hThread);
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#endif
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bail:
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return(rc);
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}
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//////////////////////////////////////////////////////////////////////////////
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// TPhysDisconnect
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//
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// The node controller wants us to bring the call down now. We must first
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// ask the transports to close down their physicall connection.
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//
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// Note that in the case of the PSTN transport we use a NOWAIT call which
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// completes syncronously. Because we will not get a follow on confirm
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// we simulate one from here. If we switch to using WAIT mode then
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// take the event generation code out!
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//////////////////////////////////////////////////////////////////////////////
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TPhysicalError CNullModem::TPhysDisconnect(void)
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{
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TRACE_OUT(("TPhysDisconnect"));
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if (! m_fInitialized)
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{
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ERROR_OUT(( "Not initialised"));
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return(TPHYS_RESULT_NOT_INITIALIZED);
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}
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TRACE_OUT(("Disconnect call, state %u", m_Line.eCallState));
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//
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// Otherwise it must be a pstn call in progress so end that. Note
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// that NC may still think it is MODEM, but we still need to close
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// PSTN.
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//
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// g_lpfnPTPhysicalDisconnectRequest(m_aLines[lineID].pstnHandle, TPHYSICAL_NO_WAIT);
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::PostMessage(m_hwnd, WM_TPHYS_DISCONNECT_CONFIRM, (WPARAM) this, m_Line.pstnHandle);
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//
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// close the comport
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//
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DropCall();
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return(TPHYS_SUCCESS);
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}
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//////////////////////////////////////////////////////////////////////////////
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// TPhysListen/TPhysUnlisten
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//
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// NULLMMAN does very little with listen/unlisten, just sets a state variable
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// that is interrogated to see if we should accept incoming calls.
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//
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// NOTE - This is different from the Listen/Unlisten that is used to tell
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// the PSTN transport about the presence of an incoming call.
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//////////////////////////////////////////////////////////////////////////////
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TPhysicalError CNullModem::TPhysListen(void)
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{
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TRACE_OUT(("TPhysListen"));
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if (! m_fInitialized)
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{
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ERROR_OUT(("TPhysListen: not initialized"));
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return(TPHYS_RESULT_NOT_INITIALIZED);
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}
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m_fListening = TRUE;
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return(TPHYS_SUCCESS);
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}
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TPhysicalError CNullModem::TPhysUnlisten(void)
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{
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TRACE_OUT(("TPhysUnlisten"));
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if (! m_fInitialized)
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{
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ERROR_OUT(("TPhysUnlisten: not initialized"));
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return(TPHYS_RESULT_NOT_INITIALIZED);
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}
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m_fListening = FALSE;
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return(TPHYS_SUCCESS);
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}
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//////////////////////////////////////////////////////////////////////////////
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// DropCall - close the comm port
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/////////////////////////////////////////////////////////////////////////////
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void CNullModem::DropCall(void)
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{
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TRACE_OUT(("DropCall"));
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//
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// close the device handle
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//
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if (NULL != m_Line.hCommLink)
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{
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CALL_STATE eCallState = m_Line.eCallState;
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m_Line.eCallState = CALL_STATE_IDLE;
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//
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// If this call is connected it is not using the comm thread
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//
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if (eCallState != CALL_STATE_CONNECTED)
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{
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m_fCommPortInUse = FALSE;
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}
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//
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// restore comm timeouts
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//
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SetCommTimeouts(m_Line.hCommLink, &m_DefaultTimeouts);
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TRACE_OUT(("Closing device handle %x", m_Line.hCommLink));
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::CloseHandle(m_Line.hCommLink);
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m_Line.hCommLink = NULL;
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}
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// FUNCTION: PSTNCallback
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//
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// DESCRIPTION:
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//
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// PSTN callback function, called by the PSTN driver with the resuts of
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// TPhysical operations
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//
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// See MCATTPRT.H for definitions of the parameters
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//
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//////////////////////////////////////////////////////////////////////////////
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TPhysicalError CALLBACK TPhysDriverCallback(USHORT msg, ULONG lParam, void *userData)
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{
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TRACE_OUT(("NULLM_PSTNCallback"));
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TRACE_OUT(("Hit TPhysical callback, %x %lx %lx", msg, lParam, userData));
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CNullModem *p = (CNullModem *) userData;
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BOOL fRet = ::PostMessage(p->GetHwnd(), msg, (WPARAM) p, lParam);
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ASSERT(fRet);
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return TPHYS_SUCCESS;
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// FUNCTION:TPhysWndProc
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//
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// Window procedure used to decouple callback requests
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//
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//////////////////////////////////////////////////////////////////////////////
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LRESULT CALLBACK TPhysWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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CNullModem *p = (CNullModem *) wParam;
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if (uMsg >= WM_APP)
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{
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return p->TPhysProcessMessage(uMsg, lParam);
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}
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return ::DefWindowProc(hwnd, uMsg, wParam, lParam);
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}
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LRESULT CNullModem::TPhysProcessMessage(UINT uMsg, LPARAM lParam)
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{
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USHORT rc;
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USHORT reason;
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ULONG status;
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LINE_INFO *pLine;
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if (WM_TPHYS_STATUS_INDICATION == uMsg)
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{
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return 0;
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}
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ASSERT(lParam == (LPARAM) m_Line.pstnHandle);
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switch (uMsg)
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{
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case WM_TPHYS_CONNECT_INDICATION:
|
|
TRACE_OUT(("got a WM_TPHYS_CONNECT_INDICATION"));
|
|
|
|
m_Line.connInfo.resultCode = TPHYS_RESULT_INUSE;
|
|
m_Line.eCallState = CALL_STATE_CONNECTED;
|
|
|
|
if (NULL != m_pfnCallback)
|
|
{
|
|
(*m_pfnCallback)(WM_TPHYS_CONNECT_CONFIRM, &m_Line.connInfo, m_nTransportID);
|
|
}
|
|
break;
|
|
|
|
case WM_TPHYS_CONNECT_CONFIRM:
|
|
//
|
|
// The transport has connected OK! We will take the line
|
|
// back when the transport pulls DTR down
|
|
//
|
|
TRACE_OUT(("got a WM_TPHYS_CONNECT_CONFIRM"));
|
|
m_Line.connInfo.resultCode = TPHYS_RESULT_SUCCESS_ALTERNATE;
|
|
m_Line.eCallState = CALL_STATE_CONNECTED;
|
|
|
|
if (NULL != m_pfnCallback)
|
|
{
|
|
(*m_pfnCallback)(WM_TPHYS_CONNECT_CONFIRM, &m_Line.connInfo, m_nTransportID);
|
|
}
|
|
break;
|
|
|
|
case WM_TPHYS_DISCONNECT_INDICATION:
|
|
case WM_TPHYS_DISCONNECT_CONFIRM:
|
|
//
|
|
// If the disconnect is the result of a failed connect request
|
|
// then tell the NC of the failure (Otherwise it is a
|
|
// successful disconnect)
|
|
//
|
|
if (WM_TPHYS_DISCONNECT_INDICATION == uMsg)
|
|
{
|
|
TRACE_OUT(("WM_TPHYS_DISCONNECT_INDICATION, %ld", lParam));
|
|
}
|
|
else
|
|
{
|
|
TRACE_OUT(("WM_TPHYS_DISCONNECT_CONFIRM, %ld", lParam));
|
|
}
|
|
if ((m_Line.eCallState == CALL_STATE_MAKE) ||
|
|
(m_Line.eCallState == CALL_STATE_ANSWER) ||
|
|
(m_Line.eCallState == CALL_STATE_CONNECTED))
|
|
{
|
|
TRACE_OUT(( "T120 connection attempt has failed"));
|
|
if (m_Line.fCaller)
|
|
{
|
|
m_Line.connInfo.resultCode = TPHYS_RESULT_CONNECT_FAILED;
|
|
if (NULL != m_pfnCallback)
|
|
{
|
|
(*m_pfnCallback)(WM_TPHYS_CONNECT_CONFIRM, &m_Line.connInfo, m_nTransportID);
|
|
}
|
|
}
|
|
DropCall();
|
|
}
|
|
else
|
|
{
|
|
//
|
|
// The transport has disconnected OK. We can take the line
|
|
// back as soon as the unlisten returns
|
|
//
|
|
TRACE_OUT(("T120 has disconnected - unlistening"));
|
|
if (! m_Line.fCaller)
|
|
{
|
|
// g_lpfnPTPhysicalUnlisten(m_Line.pstnHandle);
|
|
}
|
|
else
|
|
{
|
|
//
|
|
// We only drop the call for outgoing requests - leave
|
|
// incoming calls to drop when the line goes down
|
|
//
|
|
DropCall();
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// SetConnectedPort
|
|
//
|
|
// Waits for comm port changes
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
void CNullModem::SetConnectedPort(void)
|
|
{
|
|
DCB dcb;
|
|
|
|
TRACE_OUT(("SetConnectedPort"));
|
|
|
|
::ZeroMemory(&dcb, sizeof(dcb));
|
|
|
|
//
|
|
// Set comm mask and state
|
|
//
|
|
::SetCommMask(m_Line.hCommLink, 0); // RLSD changed state
|
|
|
|
::GetCommState(m_Line.hCommLink, &dcb);
|
|
dcb.DCBlength = sizeof(DCB);
|
|
dcb.fBinary = 1; // binary mode, no EOF check
|
|
dcb.fOutxDsrFlow = 0; // DSR output flow control
|
|
dcb.fDsrSensitivity = 0; // DSR sensitivity
|
|
dcb.fTXContinueOnXoff = 0; // XOFF continues Tx
|
|
dcb.fOutX = 0; // XON/XOFF out flow control
|
|
dcb.fInX = 0; // XON/XOFF in flow control
|
|
dcb.fErrorChar = 0; // enable error replacement
|
|
dcb.fNull = 0; // enable null stripping
|
|
dcb.XonLim = 0; // transmit XON threshold
|
|
dcb.XoffLim = 0; // transmit XOFF threshold
|
|
::SetCommState(m_Line.hCommLink, &dcb);
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// WaitForConnection
|
|
//
|
|
// Waits for comm port changes
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
BOOL CNullModem::WaitForConnection(void)
|
|
{
|
|
BOOL fRet = FALSE;
|
|
|
|
TRACE_OUT(("WaitForConnection"));
|
|
|
|
while (TRUE)
|
|
{
|
|
DWORD dwWait = ::WaitForSingleObject(m_hevtOverlapped, COMM_PORT_TIMEOUT);
|
|
TRACE_OUT(("WaitForConnection: WaitForSingleObject returns %d", dwWait));
|
|
|
|
::ResetEvent(m_hevtOverlapped);
|
|
|
|
if (dwWait == WAIT_ABANDONED || dwWait == WAIT_TIMEOUT || dwWait == WAIT_FAILED)
|
|
{
|
|
DropCall();
|
|
m_fCommPortInUse = FALSE;
|
|
ERROR_OUT(("WaitForConnection: Unable to WaitCommEvent: error = %d", ::GetLastError()));
|
|
goto Failure;
|
|
}
|
|
|
|
ASSERT(m_hevtOverlapped == m_Line.hevtCall);
|
|
if (CALL_STATE_MAKE != m_Line.eCallState && CALL_STATE_ANSWER != m_Line.eCallState)
|
|
{
|
|
ERROR_OUT(("WaitForConnection: Got a bad event = %d", m_hevtOverlapped));
|
|
goto Failure;
|
|
}
|
|
|
|
TRACE_OUT(("WaitForConnection: m_dwEventMask = %d", m_dwEventMask));
|
|
switch (m_Line.eCallState)
|
|
{
|
|
case CALL_STATE_MAKE:
|
|
{
|
|
//
|
|
// The other side was connected and cleared DTR
|
|
//
|
|
if (m_dwEventMask & (EV_RXCHAR))
|
|
{
|
|
::EscapeCommFunction(m_Line.hCommLink, CLRDTR);
|
|
::EscapeCommFunction(m_Line.hCommLink, SETDTR);
|
|
SetConnectedPort();
|
|
m_Line.fCaller = FALSE;
|
|
goto Success;
|
|
}
|
|
//
|
|
// The other side just connected
|
|
//
|
|
else
|
|
if(m_dwEventMask & (EV_DSR | EV_RLSD | EV_CTS))
|
|
{
|
|
//
|
|
// Change the state of this connection so we dont get here again
|
|
//
|
|
m_Line.eCallState = CALL_STATE_ANSWER;
|
|
|
|
//
|
|
// Wait sometime so the other side can transition to the wait state
|
|
//
|
|
::Sleep(2000);
|
|
|
|
//
|
|
// Tell the other side we connected before
|
|
//
|
|
::EscapeCommFunction(m_Line.hCommLink, SETBREAK);
|
|
|
|
::ZeroMemory(&m_Overlapped, sizeof(m_Overlapped));
|
|
m_Overlapped.hEvent = m_Line.hevtCall;
|
|
m_dwEventMask = 0;
|
|
|
|
::ResetEvent(m_Overlapped.hEvent);
|
|
|
|
if (! ::WaitCommEvent(m_Line.hCommLink, &m_dwEventMask, &m_Overlapped))
|
|
{
|
|
DWORD dwErr = ::GetLastError();
|
|
if (ERROR_IO_PENDING != dwErr)
|
|
{
|
|
ERROR_OUT(("TPhysConnectRequest: Unable to WaitCommEvent: error = %d", dwErr));
|
|
DropCall();
|
|
goto Failure;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case CALL_STATE_ANSWER:
|
|
{
|
|
::EscapeCommFunction(m_Line.hCommLink, CLRBREAK);
|
|
SetConnectedPort();
|
|
goto Success;
|
|
}
|
|
break;
|
|
}
|
|
} // while
|
|
|
|
Success:
|
|
|
|
fRet = TRUE;
|
|
|
|
Failure:
|
|
|
|
return fRet;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// COMMThread
|
|
//
|
|
// Waits for comm port changes
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
DWORD __stdcall TPhysWorkerThreadProc(void *lParam)
|
|
{
|
|
return ((CNullModem *) lParam)->WorkerThreadProc();
|
|
}
|
|
|
|
|
|
DWORD CNullModem::WorkerThreadProc(void)
|
|
{
|
|
ULONG rc = 0;
|
|
ULONG dwResult;
|
|
|
|
TRACE_OUT(("TPhysWorkerThreadProc"));
|
|
|
|
while (m_fCommPortInUse)
|
|
{
|
|
//
|
|
// Wait for connection to happen
|
|
//
|
|
if (WaitForConnection())
|
|
{
|
|
SetBuffers();
|
|
SetTimeouts();
|
|
|
|
//
|
|
// Call T120 physicall request
|
|
//
|
|
if (m_Line.fCaller)
|
|
{
|
|
// rc = g_lpfnPTPhysicalConnectRequest(0, // CALL_CONTROL_MANUAL
|
|
// &m_Line.hCommLink, NULL, &m_Line.pstnHandle);
|
|
}
|
|
else
|
|
{
|
|
m_Line.connInfo.connectionID = m_nConnectionID;
|
|
m_Line.connInfo.resultCode = TPHYS_SUCCESS;
|
|
|
|
if (NULL != m_pfnCallback)
|
|
{
|
|
(*m_pfnCallback)(WM_TPHYS_CONNECT_INDICATION, &m_Line.connInfo, m_nTransportID);
|
|
}
|
|
|
|
// rc = g_lpfnPTPhysicalListen(0, // CALL_CONTROL_MANUAL
|
|
// &m_Line.hCommLink, NULL, &m_Line.pstnHandle);
|
|
}
|
|
|
|
if (rc != 0)
|
|
{
|
|
TRACE_OUT(( "Failed COMM connect, rc %d",rc));
|
|
m_Line.connInfo.resultCode = TPHYS_RESULT_CONNECT_FAILED;
|
|
|
|
if (NULL != m_pfnCallback)
|
|
{
|
|
(*m_pfnCallback)(WM_TPHYS_CONNECT_CONFIRM, &m_Line.connInfo, m_nTransportID);
|
|
}
|
|
|
|
DropCall();
|
|
}
|
|
else
|
|
{
|
|
m_Line.eCallState = CALL_STATE_CONNECTED;
|
|
m_Line.connInfo.resultCode = TPHYS_SUCCESS;
|
|
|
|
//
|
|
// This comm port doesn't need the thread anymore
|
|
//
|
|
m_fCommPortInUse = FALSE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
TRACE_OUT(( "Failed COMM connect, rc %d",rc));
|
|
m_Line.connInfo.resultCode = TPHYS_RESULT_CONNECT_FAILED;
|
|
|
|
if (NULL != m_pfnCallback)
|
|
{
|
|
(*m_pfnCallback)(WM_TPHYS_CONNECT_CONFIRM, &m_Line.connInfo, m_nTransportID);
|
|
}
|
|
|
|
//
|
|
// Something went wrong in the wait, get out of the loop
|
|
//
|
|
break;
|
|
}
|
|
}
|
|
|
|
//
|
|
// We are going down.
|
|
//
|
|
if (NULL != m_hThread)
|
|
{
|
|
::CloseHandle(m_hThread);
|
|
m_hThread = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
void CNullModem::SetBuffers(void)
|
|
{
|
|
BOOL fRet = ::SetupComm(m_Line.hCommLink, /* rx */ 10240, /* tx */ 1024);
|
|
ASSERT(fRet);
|
|
}
|
|
|
|
|
|
void CNullModem::SetTimeouts(void)
|
|
{
|
|
COMMTIMEOUTS com_timeouts;
|
|
::ZeroMemory(&com_timeouts, sizeof(com_timeouts));
|
|
com_timeouts.ReadIntervalTimeout = 10;
|
|
com_timeouts.ReadTotalTimeoutMultiplier = 0;
|
|
com_timeouts.ReadTotalTimeoutConstant = 100;
|
|
com_timeouts.WriteTotalTimeoutMultiplier = 0;
|
|
com_timeouts.WriteTotalTimeoutConstant = 10000;
|
|
BOOL fRet = ::SetCommTimeouts(m_Line.hCommLink, &com_timeouts);
|
|
ASSERT(fRet);
|
|
|
|
}
|
|
|
|
|