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#ifndef _RAS_H_
#define _RAS_H_
#define REG_RETRY_MAX 3
#define URQ_RETRY_MAX 2
#define ARQ_RETRY_MAX 3
#define DRQ_RETRY_MAX 3
#define RASIO_SEND_BUFFER_LIST_MAX 10
#define REG_EXPIRE_TIME 4000
#define ARQ_EXPIRE_TIME 4000
#define NOT_RESEND_SEQ_NUM -1
//(127.0.0.1 in network byte order)
#define NET_LOCAL_IP_ADDR_INTERFACE 0x0100007F
//(127.0.0.1 in host byte order)
#define HOST_LOCAL_IP_ADDR_INTERFACE 0x7F000001
extern const ASN1objectidentifier_s _OID_H225ProtocolIdentifierV1 [];extern const ASN1objectidentifier_s _OID_H225ProtocolIdentifierV2 [];
#define OID_H225ProtocolIdentifierV1 const_cast<ASN1objectidentifier_s *> (_OID_H225ProtocolIdentifierV1);
#define OID_H225ProtocolIdentifierV2 const_cast<ASN1objectidentifier_s *> (_OID_H225ProtocolIdentifierV2);
#undef OID_ELEMENT
#define OID_RasProtocolIdentifierV2 (ASN1objectidentifier_s *)_OID_RasProtocolIdentifierV2
class RAS_CLIENT;
struct EXPIRE_CONTEXT{ WORD seqNumber; union { HDRVCALL DriverCallHandle; RAS_CLIENT * RasClient; };};
typedef struct _ALIASCHANGE_REQUEST{ LIST_ENTRY listEntry; ENDPOINT_ID rasEndpointID; WORD wRequestSeqNum; PH323_ALIASNAMES pAliasList;
} ALIASCHANGE_REQUEST, *PALIASCHANGE_REQUEST;
#define REG_TTL_MARGIN 2
enum RAS_CLIENT_STATE{ RAS_CLIENT_STATE_NONE = 0, RAS_CLIENT_STATE_INITIALIZED};
//If the app wants to send an URQ but the TSP ihasn't received RCF yet then we
//the information in this struct and send URQ when we get RCF.
typedef struct _PENDINGURQ{ WORD RRQSeqNumber;} PENDINGURQ;
enum RAS_REGISTER_STATE{ RAS_REGISTER_STATE_IDLE = 0, RAS_REGISTER_STATE_RRQSENT, RAS_REGISTER_STATE_RRQEXPIRED, RAS_REGISTER_STATE_REGISTERED, RAS_REGISTER_STATE_URQSENT, RAS_REGISTER_STATE_URQEXPIRED, RAS_REGISTER_STATE_UNREGISTERED, RAS_REGISTER_STATE_RRJ, RAS_REGISTER_STATE_URQRECVD,};
class RAS_CLIENT{
private: HANDLE m_hRegTimer; HANDLE m_hUnRegTimer; HANDLE m_hRegTTLTimer; PH323_ALIASNAMES m_pAliasList;//list of all the aliases registered with this list
SOCKET m_Socket; CRITICAL_SECTION m_CriticalSection; RAS_REGISTER_STATE m_RegisterState; DWORD m_IoRefCount; RAS_CLIENT_STATE m_dwState; LIST_ENTRY m_sendFreeList; LIST_ENTRY m_sendPendingList; DWORD m_dwSendFreeLen; SOCKADDR_IN m_GKAddress; SOCKADDR_IN m_sockAddr; TransportAddress m_transportAddress; RAS_RECV_CONTEXT m_recvOverlapped; WORD m_lastRegisterSeqNum; WORD m_wTTLSeqNumber; WORD m_UnRegisterSeqNum; WORD m_wRASSeqNum; DWORD m_dwRegRetryCount; DWORD m_dwUnRegRetryCount; DWORD m_dwCallsInProgress; ENDPOINT_ID m_RASEndpointID; ASN1_CODER_INFO m_ASNCoderInfo; PENDINGURQ m_PendingURQ; DWORD m_dwRegTimeToLive; EXPIRE_CONTEXT* m_pRRQExpireContext; EXPIRE_CONTEXT* m_pURQExpireContext; LIST_ENTRY m_aliasChangeRequestList;
RAS_SEND_CONTEXT *AllocSendBuffer(); void FreeSendBuffer( RAS_SEND_CONTEXT * pBuffer ); void OnInfoRequest( InfoRequest * IRQ ); void ProcessRasMessage(IN RasMessage *rasMessage ); void OnUnregistrationConfirm( IN UnregistrationConfirm *UCF ); void OnUnregistrationReject( IN UnregistrationReject *URJ ); void OnRegistrationReject( IN RegistrationReject * RRJ ); void OnRegistrationConfirm( IN RegistrationConfirm * RCF ); BOOL InitializeIo(); BOOL IssueRecv(); int TermASNCoder(void); int InitASNCoder(void); BOOL SendUCF( WORD seqNumber ); BOOL SendURJ( WORD seqNumber, DWORD dwReason ); void OnUnregistrationRequest( IN UnregistrationRequest *URQ ); BOOL FreeSendList( PLIST_ENTRY pListHead ); BOOL InitializeTTLTimer( IN RegistrationConfirm * RCF );
HRESULT SendInfoRequestResponse( IN SOCKADDR_IN * RasAddress, IN USHORT SequenceNumber, IN InfoRequestResponse_perCallInfo * CallInfoList);
HRESULT EncodeSendMessage( IN RasMessage * rasMessage );
public: RAS_CLIENT(); ~RAS_CLIENT();
void Lock() { H323DBG((DEBUG_LEVEL_TRACE, "wait on RAS client lock:%p.", this )); EnterCriticalSection( &m_CriticalSection ); H323DBG((DEBUG_LEVEL_TRACE, "RAS client locked: %p.", this )); }
void Unlock() { LeaveCriticalSection( &m_CriticalSection ); H323DBG((DEBUG_LEVEL_TRACE, "RAS client unlocked: %p.", this )); } WORD GetNextSeqNum() { WORD wSeqNum; Lock(); wSeqNum = ++m_wRASSeqNum; if( wSeqNum == 0 ) wSeqNum = ++m_wRASSeqNum; Unlock(); return wSeqNum; }
RAS_REGISTER_STATE GetRegState() { return m_RegisterState; }
HRESULT GetEndpointID ( OUT ASN1char16string_t * ReturnEndpointID);
HRESULT GetLocalAddress ( OUT SOCKADDR_IN * ReturnSocketAddress) { HRESULT hr;
Lock();
if (m_RegisterState == RAS_REGISTER_STATE_REGISTERED) { *ReturnSocketAddress = m_sockAddr; hr = S_OK; } else { hr = E_FAIL; }
Unlock();
return hr; }
PH323_ALIASNAMES GetRegisteredAliasList() { return m_pAliasList; } BOOL Initialize( SOCKADDR_IN* psaGKAddr ); void Shutdown(); static void NTAPI RegExpiredCallback( PVOID dwParam1, BOOLEAN bTimer ); static void NTAPI UnregExpiredCallback( PVOID dwParam1, BOOLEAN bTimer ); static void NTAPI TTLExpiredCallback( IN PVOID dwParam1, IN BOOLEAN bTimer );
BOOL SendRRQ( IN long seqNumber, IN PALIASCHANGE_REQUEST pAliasList ); BOOL SendURQ( long seqNumber, EndpointIdentifier * pEndpointID );
void RegExpired( WORD seqNumber ); void UnregExpired( WORD seqNumber ); void TTLExpired(); static void NTAPI IoCompletionCallback(IN DWORD dwStatus, IN DWORD cbTransferred, IN LPOVERLAPPED pOverlapped ); void OnSendComplete( IN DWORD dwStatus, RAS_SEND_CONTEXT *pOverlappedSend ); void OnRecvComplete( IN DWORD dwStatus, RAS_RECV_CONTEXT * pOverlappedRecv );
void HandleRegistryChange();
BOOL IssueSend( RasMessage * pRasMessage ) { return EncodeSendMessage (pRasMessage) == S_OK; }};
void HandleRASCallMessage( IN RasMessage *pRasMessage);
HRESULT RasStart (void);
void RasStop (void);
HRESULT RasSetAliasList ( IN AliasAddress * AliasArray, IN DWORD Count);
BOOL RasIsRegistered (void);
HRESULT RasGetLocalAddress ( OUT SOCKADDR_IN * ReturnLocalAddress);
USHORT RasAllocSequenceNumber (void);
HRESULT RasGetEndpointID ( OUT EndpointIdentifier * ReturnEndpointID);
HRESULT RasEncodeSendMessage ( IN RasMessage * RasMessage);
PH323_ALIASNAMES RASGetRegisteredAliasList();void RasHandleRegistryChange();
#endif //_RAS_H_
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