185 lines
7.7 KiB
C
185 lines
7.7 KiB
C
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///////////////////////////////////////////////////////////////////////////////
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//
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// Header defining Null Modem structures and prototypes
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//
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// Copyright(c) Microsoft 1999
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//
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _NULL_MODEM_H_
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#define _NULL_MODEM_H_
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/****************************************************************************/
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/* These are valid return codes from TPhys API functions */
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/* */
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/* TPHYS_SUCCESS */
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/* The function executed properly, without error. */
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/* TPHYS_RESULT_INUSE */
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/* The TPhysInitialize() function failed because the transport */
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/* is already initialized */
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/* TPHYS_RESULT_FAIL */
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/* A general failure, such as a memory allocation error has */
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/* caused the function to fail */
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/* TPHYS_RESULT_NOT_INITIALIZED */
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/* The user is attempting to use a function even though the */
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/* TPhysInitialize() function failed. */
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/* TPHYS_RESULT_CONNECT_FAILED */
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/* The TPhysConnectRequest() function failed. */
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/* TPHYS_CONNECT_RESPONSE_FAILED */
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/* The TPhysConnectResponse() function failed. */
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/* TPHYS_RESULT_NOT_LISTENING */
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/* The transport is not currently in a listening state */
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/* TPHYS_RESULT_INVALID_CONNECTION */
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/* The disconnect references an invalid connection handle */
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/* TPHYS_RESULT_INVALID_ADDRESS */
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/* The supplied address is invalid */
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/* TPHYS_RESULT_CONNECT_REJECTED */
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/* The node controller has successfully rejected ain incoming */
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/* connection request. */
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/* TPHYS_RESULT_SUCCESS_ALTERNATE */
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/* The TPHYSICAL driver has connected, but with an alternate */
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/* ADDRESS_TYPE as indicated in the connect_info in the response */
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/****************************************************************************/
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typedef enum tagTPhysicalError
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{
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TPHYS_SUCCESS = 0,
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TPHYS_RESULT_INUSE = 100,
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TPHYS_RESULT_FAIL = 101,
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TPHYS_RESULT_NOT_INITIALIZED = 102,
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TPHYS_RESULT_CONNECT_FAILED = 103,
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TPHYS_CONNECT_RESPONSE_FAILED = 104,
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TPHYS_RESULT_NOT_LISTENING = 105,
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TPHYS_RESULT_INVALID_CONNECTION = 106,
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TPHYS_RESULT_INVALID_ADDRESS = 107,
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TPHYS_RESULT_CONNECT_REJECTED = 108,
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TPHYS_RESULT_SUCCESS_ALTERNATE = 109,
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TPHYS_RESULT_COMM_PORT_BUSY = 110,
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TPHYS_RESULT_WAITING_FOR_CONNECTION = 111,
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}
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TPhysicalError;
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/****************************************************************************/
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/* Structure TPHYS_CALLBACK_INFO */
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/* */
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/* This structure is passed back as the second parameter to */
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/* TPhysCallback for CONNECT notifications. It contains all the */
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/* information necessary for the node controller to establish a logical */
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/* connection over the physical connection */
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/* */
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/* It is the responsibility of the node controller to format and present */
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/* this information to the transport driver during the in-band portion of */
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/* the physical connection establishment. */
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/* */
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/****************************************************************************/
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#define TPHYS_MAX_ADDRESS_INFO 64
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typedef struct tphys_connect_info
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{
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UINT connectionID;
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UINT resultCode;
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}
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TPHYS_CONNECT_INFO, * PTPHYS_CONNECT_INFO;
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typedef UINT PHYSICAL_HANDLE;
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typedef void (CALLBACK *TPhysCallback) (WORD, PTPHYS_CONNECT_INFO, UINT);
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// OOB compatible
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#define WM_TPHYS_CONNECT_CONFIRM (WM_APP + 1)
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#define WM_TPHYS_CONNECT_INDICATION (WM_APP + 2)
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#define WM_TPHYS_DISCONNECT_CONFIRM (WM_APP + 3)
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#define WM_TPHYS_DISCONNECT_INDICATION (WM_APP + 4)
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#define WM_TPHYS_STATUS_INDICATION (WM_APP + 5)
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///////////////////////////////////////////////////////////////////////////////
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// Structure containing state information for each NULLMODEM line
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///////////////////////////////////////////////////////////////////////////////
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typedef enum tagCALL_STATE
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{
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CALL_STATE_IDLE = 0, // Call is idle
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CALL_STATE_MAKE = 1, // Establishing phone connection
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CALL_STATE_ANSWER = 2, // Answering a new call
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CALL_STATE_DROP = 3, // Dropping the phone connection
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CALL_STATE_CONNECTED = 4, // Phone connection established and passed onto TDD.
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}
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CALL_STATE;
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typedef struct tagLINE_INFO
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{
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HANDLE hevtCall; // handle to the call
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HANDLE hCommLink; // handle to COM device - call
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BOOL fCaller; // FALSE = incoming call
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CALL_STATE eCallState; // one of the following states
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PHYSICAL_HANDLE pstnHandle;
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TPHYS_CONNECT_INFO connInfo;
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}
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LINE_INFO;
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#define MAX_NULLMODEM_LINES 4
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class CNullModem
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{
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public:
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CNullModem(HINSTANCE);
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~CNullModem(void);
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TPhysicalError TPhysInitialize(TPhysCallback callback, UINT transport_id);
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TPhysicalError TPhysTerminate(void);
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TPhysicalError TPhysListen(void);
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TPhysicalError TPhysUnlisten(void);
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TPhysicalError TPhysConnectRequest(LPSTR pszComPort);
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TPhysicalError TPhysDisconnect(void);
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DWORD WorkerThreadProc(void);
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HWND GetHwnd(void) { return m_hwnd; }
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LRESULT TPhysProcessMessage(UINT uMsg, LPARAM lParam);
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HANDLE GetCommLink(void) { return m_Line.hCommLink; }
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void SetBuffers(void);
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void SetTimeouts(void);
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private:
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void DropCall(void);
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BOOL WaitForConnection(void);
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void SetConnectedPort(void);
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private:
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BOOL m_fInitialized;
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HINSTANCE m_hDllInst;
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TPhysCallback m_pfnCallback;
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BOOL m_fListening;
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HWND m_hwnd;
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UINT m_nTransportID; // ID required by RNC
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UINT m_nConnectionID; // next conn ID to allocate
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LINE_INFO m_Line;
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HANDLE m_hThread;
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DWORD m_dwThreadID;
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HANDLE m_hevtOverlapped;
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DWORD m_dwEventMask;
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BOOL m_fCommPortInUse;
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OVERLAPPED m_Overlapped;
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COMMTIMEOUTS m_DefaultTimeouts;
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};
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LRESULT CALLBACK TPhysWndProc(HWND, UINT, WPARAM, LPARAM);
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TPhysicalError CALLBACK TPhysDriverCallback(USHORT msg, ULONG parm, void *userData);
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#define COMM_PORT_TIMEOUT 60000 // 60 seconds
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#endif // _NULL_MODEM_H_
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