390 lines
9.7 KiB
C
390 lines
9.7 KiB
C
|
#ifndef __pxsvc_q931_h
|
||
|
|
#define __pxsvc_q931_h
|
||
|
|
|
||
|
|
#include "q931msg.h"
|
||
|
|
#include "ovioctx.h"
|
||
|
|
#include "crv.h"
|
||
|
|
|
||
|
|
/*---------------------------------------------------
|
||
|
|
Copyright (c) 1998, Microsoft Corporation
|
||
|
|
File: q931.h
|
||
|
|
|
||
|
|
Purpose:
|
||
|
|
|
||
|
|
Contains declarations specific to q931 processing that need
|
||
|
|
not be present in cbridge.h.
|
||
|
|
|
||
|
|
History:
|
||
|
|
|
||
|
|
1. created
|
||
|
|
Byrisetty Rajeev (rajeevb) 26-Aug-1998
|
||
|
|
|
||
|
|
---------------------------------------------------*/
|
||
|
|
|
||
|
|
// The H.225 spec calls for a 2 byte call reference value
|
||
|
|
typedef WORD CALL_REF_TYPE;
|
||
|
|
|
||
|
|
// Q931 source side states
|
||
|
|
enum Q931_SOURCE_STATE
|
||
|
|
{
|
||
|
|
Q931_SOURCE_STATE_NOT_INIT = 0,
|
||
|
|
Q931_SOURCE_STATE_INIT,
|
||
|
|
Q931_SOURCE_STATE_CON_ESTD,
|
||
|
|
Q931_SOURCE_STATE_SETUP_RCVD,
|
||
|
|
Q931_SOURCE_STATE_REL_COMP_RCVD
|
||
|
|
};
|
||
|
|
|
||
|
|
// Q931 destination side states
|
||
|
|
enum Q931_DEST_STATE
|
||
|
|
{
|
||
|
|
Q931_DEST_STATE_NOT_INIT = 0,
|
||
|
|
Q931_DEST_STATE_INIT,
|
||
|
|
Q931_DEST_STATE_CON_ESTD,
|
||
|
|
Q931_DEST_STATE_CALL_PROC_RCVD,
|
||
|
|
Q931_DEST_STATE_ALERTING_RCVD,
|
||
|
|
Q931_DEST_STATE_CONNECT_RCVD,
|
||
|
|
Q931_DEST_STATE_REL_COMP_RCVD
|
||
|
|
};
|
||
|
|
|
||
|
|
#ifdef DBG
|
||
|
|
// CODEWORK: Define a static array of strings to use in dbg printfs
|
||
|
|
// where the array can be indexed by the state.
|
||
|
|
|
||
|
|
#endif DBG
|
||
|
|
|
||
|
|
// Q931_INFO
|
||
|
|
|
||
|
|
|
||
|
|
class Q931_INFO :
|
||
|
|
public OVERLAPPED_PROCESSOR,
|
||
|
|
public TIMER_PROCESSOR
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
|
||
|
|
inline Q931_INFO();
|
||
|
|
|
||
|
|
inline void Init(
|
||
|
|
IN H323_STATE &H323State
|
||
|
|
);
|
||
|
|
|
||
|
|
inline CALL_REF_TYPE GetCallRefVal();
|
||
|
|
|
||
|
|
virtual HRESULT SendCallback(
|
||
|
|
IN HRESULT CallbackHResult
|
||
|
|
);
|
||
|
|
|
||
|
|
virtual HRESULT ReceiveCallback(
|
||
|
|
IN HRESULT CallbackHResult,
|
||
|
|
IN BYTE *pBuf,
|
||
|
|
IN DWORD BufLen
|
||
|
|
);
|
||
|
|
|
||
|
|
// Implementation is provided by SOURCE_Q931_INFO and DEST_Q931_INFO
|
||
|
|
virtual HRESULT ReceiveCallback(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
) = 0;
|
||
|
|
|
||
|
|
HRESULT CreateTimer(DWORD TimeoutValue);
|
||
|
|
|
||
|
|
virtual void TimerCallback();
|
||
|
|
|
||
|
|
HRESULT SendReleaseCompletePdu();
|
||
|
|
|
||
|
|
HRESULT QueueSend(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
// queue an asynchronous receive call back
|
||
|
|
HRESULT QueueReceive();
|
||
|
|
|
||
|
|
void IncrementLifetimeCounter (void);
|
||
|
|
void DecrementLifetimeCounter (void);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
|
||
|
|
// call reference value for this call (Q931 portion)
|
||
|
|
// A Call Reference Value is generated for each outbound call.
|
||
|
|
// The CRV in PDUs corresponding to outbound calls needs to be
|
||
|
|
// replaced because the external H.323 endpoint sees the call
|
||
|
|
// as coming from the proxy. No CRV replacement is required for inbound
|
||
|
|
// calls. But we need to store the CRV so that we can send the
|
||
|
|
// CallProceeding/ReleaseComplete PDUs.
|
||
|
|
// This variable is initialized when we process the Setup PDU.
|
||
|
|
// Note that the Call Reference Value also includes the Call Reference Flag
|
||
|
|
// which indicates whether the PDU is sent by the originator (0) or
|
||
|
|
// destination (1) of the call.
|
||
|
|
// m_CallRefVal always stores the Call Reference Value that we send in
|
||
|
|
// the PDUs. So, SOURCE_Q931_INFO CRV will have the CRV flag set (since
|
||
|
|
// it sends to the source) and the DEST_Q931_INFO CRV will have this flag
|
||
|
|
// zeroed (since it is the source from the destination's point of view.
|
||
|
|
CALL_REF_TYPE m_CallRefVal;
|
||
|
|
};
|
||
|
|
|
||
|
|
inline
|
||
|
|
Q931_INFO::Q931_INFO(
|
||
|
|
)
|
||
|
|
: m_CallRefVal(0)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void
|
||
|
|
Q931_INFO::Init(
|
||
|
|
IN H323_STATE &H323State
|
||
|
|
)
|
||
|
|
{
|
||
|
|
// initialize the overlaped processor
|
||
|
|
OVERLAPPED_PROCESSOR::Init(OPT_Q931, H323State);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
class SOURCE_Q931_INFO :
|
||
|
|
public Q931_INFO
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
|
||
|
|
inline SOURCE_Q931_INFO();
|
||
|
|
|
||
|
|
inline void Init(
|
||
|
|
IN SOURCE_H323_STATE &SourceH323State
|
||
|
|
);
|
||
|
|
|
||
|
|
inline HRESULT SetIncomingSocket(
|
||
|
|
IN SOCKET IncomingSocket,
|
||
|
|
IN SOCKADDR_IN * LocalAddress,
|
||
|
|
IN SOCKADDR_IN * RemoteAddress);
|
||
|
|
|
||
|
|
inline DEST_Q931_INFO &GetDestQ931Info();
|
||
|
|
|
||
|
|
inline SOURCE_H245_INFO &GetSourceH245Info();
|
||
|
|
|
||
|
|
// TimerValue contains the timer value in seconds, for a timer event
|
||
|
|
// to be created when a queued send completes
|
||
|
|
HRESULT ProcessDestPDU(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
virtual ~SOURCE_Q931_INFO();
|
||
|
|
|
||
|
|
protected:
|
||
|
|
|
||
|
|
Q931_SOURCE_STATE m_Q931SourceState;
|
||
|
|
|
||
|
|
// this should never be called
|
||
|
|
virtual HRESULT AcceptCallback(
|
||
|
|
IN DWORD Status,
|
||
|
|
IN SOCKET Socket,
|
||
|
|
IN SOCKADDR_IN * LocalAddress,
|
||
|
|
IN SOCKADDR_IN * RemoteAddress);
|
||
|
|
|
||
|
|
virtual HRESULT ReceiveCallback(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
private:
|
||
|
|
|
||
|
|
// processes PDUs when in Q931_SRC_CON_EST state
|
||
|
|
HRESULT HandleStateSrcConEstd(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
// handles the release complete PDU - sends it to the
|
||
|
|
// destination q931 instance, performs state transition and
|
||
|
|
// initiates cleanup
|
||
|
|
HRESULT HandleReleaseCompletePDU(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
// processes CONNECT PDU forwarded by the dest instance
|
||
|
|
HRESULT ProcessConnectPDU(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
inline
|
||
|
|
SOURCE_Q931_INFO::SOURCE_Q931_INFO(
|
||
|
|
)
|
||
|
|
: m_Q931SourceState(Q931_SOURCE_STATE_NOT_INIT)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void
|
||
|
|
SOURCE_Q931_INFO::Init(
|
||
|
|
IN SOURCE_H323_STATE &SourceH323State
|
||
|
|
)
|
||
|
|
{
|
||
|
|
m_Q931SourceState = Q931_SOURCE_STATE_INIT;
|
||
|
|
Q931_INFO::Init((H323_STATE &)SourceH323State);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
class DEST_Q931_INFO :
|
||
|
|
public Q931_INFO
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
|
||
|
|
inline DEST_Q931_INFO();
|
||
|
|
|
||
|
|
inline HRESULT Init(
|
||
|
|
IN DEST_H323_STATE &DestH323State
|
||
|
|
);
|
||
|
|
|
||
|
|
inline SOURCE_Q931_INFO &GetSourceQ931Info();
|
||
|
|
|
||
|
|
inline DEST_H245_INFO &GetDestH245Info();
|
||
|
|
|
||
|
|
// processes PDUs received from the source Q931 instance
|
||
|
|
// and directs them to the method for processing the
|
||
|
|
// specific PDU
|
||
|
|
HRESULT ProcessSourcePDU(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
virtual ~DEST_Q931_INFO();
|
||
|
|
|
||
|
|
protected:
|
||
|
|
|
||
|
|
// state for the dest instance
|
||
|
|
Q931_DEST_STATE m_Q931DestState;
|
||
|
|
|
||
|
|
// this method should never be called
|
||
|
|
virtual HRESULT AcceptCallback(
|
||
|
|
IN DWORD Status,
|
||
|
|
IN SOCKET Socket,
|
||
|
|
IN SOCKADDR_IN * LocalAddress,
|
||
|
|
IN SOCKADDR_IN * RemoteAddress);
|
||
|
|
|
||
|
|
virtual HRESULT ReceiveCallback (
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
private:
|
||
|
|
|
||
|
|
// the following methods handle PDUs when the instance
|
||
|
|
// is in a certain Q931 state
|
||
|
|
|
||
|
|
HRESULT HandleStateDestConEstd(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT HandleStateDestCallProcRcvd(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT HandleStateDestAlertingRcvd(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT HandleStateDestConnectRcvd(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
// the following methods handle a specific PDU for
|
||
|
|
// any state of the Q931 instance. These are typically
|
||
|
|
// called after the PDU has gone through one of the
|
||
|
|
// HandleState* methods
|
||
|
|
|
||
|
|
HRESULT HandleCallProceedingPDU(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT HandleAlertingPDU(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT HandleConnectPDU(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
// handles the release complete PDU - sends it to the
|
||
|
|
// source q931 instance, performs state transition and
|
||
|
|
// initiates cleanup
|
||
|
|
HRESULT HandleReleaseCompletePDU(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
// the following methods process PDUs received from
|
||
|
|
// the source Q931 instance
|
||
|
|
|
||
|
|
// processes source Q.931 instance setup PDU
|
||
|
|
HRESULT ProcessSourceSetupPDU(
|
||
|
|
IN Q931_MESSAGE *pQ931Message,
|
||
|
|
IN H323_UserInformation *pH323UserInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
// other helper methods
|
||
|
|
|
||
|
|
HRESULT ConnectToH323Endpoint(
|
||
|
|
IN SOCKADDR_IN * DestinationAddress);
|
||
|
|
|
||
|
|
HRESULT LookupDefaultDestination (
|
||
|
|
OUT DWORD * ReturnAddress); // host order
|
||
|
|
|
||
|
|
// if necessary, bring up the demand-dial interface
|
||
|
|
HRESULT ConnectDemandDialInterface (void);
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
inline
|
||
|
|
DEST_Q931_INFO::DEST_Q931_INFO(
|
||
|
|
)
|
||
|
|
: m_Q931DestState(Q931_DEST_STATE_NOT_INIT)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
inline HRESULT
|
||
|
|
DEST_Q931_INFO::Init(
|
||
|
|
IN DEST_H323_STATE &DestH323State
|
||
|
|
)
|
||
|
|
{
|
||
|
|
m_Q931DestState = Q931_DEST_STATE_INIT;
|
||
|
|
Q931_INFO::Init((H323_STATE &)DestH323State);
|
||
|
|
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
Q931AsyncAcceptFunction (
|
||
|
|
IN PVOID Context,
|
||
|
|
IN SOCKET Socket,
|
||
|
|
IN SOCKADDR_IN * LocalAddress,
|
||
|
|
IN SOCKADDR_IN * RemoteAddress);
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
Q931CreateBindSocket (
|
||
|
|
void);
|
||
|
|
|
||
|
|
void Q931CloseSocket (
|
||
|
|
void);
|
||
|
|
|
||
|
|
HRESULT Q931StartLoopbackRedirect (
|
||
|
|
void);
|
||
|
|
|
||
|
|
void Q931StopLoopbackRedirect (
|
||
|
|
void);
|
||
|
|
|
||
|
|
extern SYNC_COUNTER Q931SyncCounter;
|
||
|
|
extern ASYNC_ACCEPT Q931AsyncAccept;
|
||
|
|
extern SOCKADDR_IN Q931ListenSocketAddress;
|
||
|
|
extern HANDLE Q931LoopbackRedirectHandle;
|
||
|
|
|
||
|
|
#endif // __pxsvc_q931_h
|