443 lines
13 KiB
C
443 lines
13 KiB
C
/***********************************************************************
|
||
* *
|
||
* Filename: mrse.c *
|
||
* Module: H245 Finite State Machine Subsystem *
|
||
* *
|
||
***********************************************************************
|
||
* INTEL Corporation Proprietary Information *
|
||
* *
|
||
* This listing is supplied under the terms of a license agreement *
|
||
* with INTEL Corporation and may not be copied nor disclosed except *
|
||
* in accordance with the terms of that agreement. *
|
||
* *
|
||
* Copyright (c) 1996 Intel Corporation. All rights reserved. *
|
||
***********************************************************************
|
||
* *
|
||
* $Workfile: mrse.c $
|
||
* $Revision: 1.5 $
|
||
* $Modtime: 13 Feb 1997 19:25:48 $
|
||
* $Log: S:/STURGEON/SRC/H245/SRC/VCS/mrse.c_v $
|
||
*
|
||
* Rev 1.5 13 Feb 1997 19:31:20 MANDREWS
|
||
* Fixed bug in generation of request mode ack and request mode reject;
|
||
* the sequence number was not being copied into the pdu.
|
||
*
|
||
* Rev 1.4 09 Dec 1996 13:34:46 EHOWARDX
|
||
* Updated copyright notice.
|
||
*
|
||
* Rev 1.3 04 Jun 1996 14:01:06 EHOWARDX
|
||
* Fixed Release build warnings.
|
||
*
|
||
* Rev 1.2 30 May 1996 23:39:16 EHOWARDX
|
||
* Cleanup.
|
||
*
|
||
* Rev 1.1 28 May 1996 14:25:44 EHOWARDX
|
||
* Tel Aviv update.
|
||
*
|
||
* Rev 1.0 09 May 1996 21:06:32 EHOWARDX
|
||
* Initial revision.
|
||
*
|
||
* Rev 1.1 09 May 1996 19:48:08 EHOWARDX
|
||
* Change TimerExpiryF function arguements.
|
||
*
|
||
* Rev 1.0 15 Apr 1996 10:44:52 EHOWARDX
|
||
* Initial revision.
|
||
* *
|
||
***********************************************************************/
|
||
|
||
#include "precomp.h"
|
||
|
||
#include "h245api.h"
|
||
#include "h245com.h"
|
||
#include "h245fsm.h"
|
||
#include "mrse.h"
|
||
|
||
|
||
|
||
// Out-going/In-coming MRSE states
|
||
#define MRSE_IDLE 0 // IDLE
|
||
#define MRSE_WAIT 1 // AWAITING_RESPONSE
|
||
|
||
|
||
|
||
extern unsigned int uT109;
|
||
|
||
/***********************************************************************
|
||
*
|
||
* LOCAL FUNCTIONS
|
||
*
|
||
***********************************************************************/
|
||
|
||
/*
|
||
* NAME
|
||
* T109ExpiryF - Callback function called by the timer
|
||
*
|
||
*
|
||
* PARAMETERS
|
||
* INPUT dwInst current instance of H245
|
||
* INPUT id timer id
|
||
* INPUT pObject pointer to a State Entity
|
||
*
|
||
*
|
||
* RETURN VALUE
|
||
* OK
|
||
*/
|
||
|
||
int T109ExpiryF(struct InstanceStruct *pInstance, DWORD_PTR dwTimerId, void *pObject)
|
||
{
|
||
return FsmTimerEvent(pInstance, dwTimerId, pObject, T109Expiry);
|
||
} // T109ExpiryF()
|
||
|
||
|
||
|
||
/***********************************************************************
|
||
*
|
||
* OUT-GOING FINITE STATE MACHINE FUNCTIONS
|
||
*
|
||
***********************************************************************/
|
||
|
||
/*
|
||
* NAME
|
||
* MRSE0_TRANSFER_requestF - TRANSFER.request from API in IDLE state
|
||
*
|
||
*
|
||
* PARAMETERS
|
||
* INPUT pObject pointer to State Entity
|
||
* INPUT pPdu pointer to PDU
|
||
*
|
||
* RETURN VALUE
|
||
* Error return codes defined in h245com.h
|
||
*/
|
||
|
||
HRESULT MRSE0_TRANSFER_requestF (Object_t *pObject, PDU_t *pPdu)
|
||
{
|
||
HRESULT lError;
|
||
|
||
ASSERT(pObject->Entity == MRSE_OUT);
|
||
ASSERT(pObject->State == MRSE_IDLE);
|
||
H245TRACE(pObject->dwInst, 2, "MRSE0_TRANSFER_request:%d", pObject->Key);
|
||
|
||
pObject->pInstance->StateMachine.byMrseOutSequence++;
|
||
pPdu->u.MltmdSystmCntrlMssg_rqst.u.requestMode.sequenceNumber =
|
||
pObject->pInstance->StateMachine.byMrseOutSequence;
|
||
|
||
// Send Request Mode PDU to remote
|
||
lError = sendPDU(pObject->pInstance, pPdu);
|
||
|
||
// Set timer T109
|
||
pObject->State = MRSE_WAIT;
|
||
FsmStartTimer(pObject, T109ExpiryF, uT109);
|
||
|
||
return lError;
|
||
} // MRSE0_TRANSFER_request
|
||
|
||
|
||
|
||
/*
|
||
* NAME
|
||
* MRSE1_TRANSFER_requestF - TRANSFER.request from API in AWAITING RESPONSE state
|
||
*
|
||
*
|
||
* PARAMETERS
|
||
* INPUT pObject pointer to State Entity
|
||
* INPUT pPdu pointer to PDU
|
||
*
|
||
* RETURN VALUE
|
||
* Error return codes defined in h245com.h
|
||
*/
|
||
|
||
HRESULT MRSE1_TRANSFER_requestF (Object_t *pObject, PDU_t *pPdu)
|
||
{
|
||
HRESULT lError;
|
||
|
||
ASSERT(pObject->Entity == MRSE_OUT);
|
||
ASSERT(pObject->State == MRSE_WAIT);
|
||
H245TRACE(pObject->dwInst, 2, "MRSE1_TRANSFER_request:%d", pObject->Key);
|
||
|
||
// Reset timer T109
|
||
FsmStopTimer(pObject);
|
||
|
||
pObject->pInstance->StateMachine.byMrseOutSequence++;
|
||
pPdu->u.MltmdSystmCntrlMssg_rqst.u.requestMode.sequenceNumber =
|
||
pObject->pInstance->StateMachine.byMrseOutSequence;
|
||
|
||
// Send Request Mode PDU to remote
|
||
lError = sendPDU(pObject->pInstance, pPdu);
|
||
|
||
// Set timer T109
|
||
FsmStartTimer(pObject, T109ExpiryF, uT109);
|
||
|
||
return lError;
|
||
} // MRSE1_TRANSFER_request
|
||
|
||
|
||
|
||
/*
|
||
* NAME
|
||
* MRSE1_RequestModeAckF - RequestModeAck in AWAITING RESPONSE state
|
||
*
|
||
*
|
||
* PARAMETERS
|
||
* INPUT pObject pointer to State Entity
|
||
* INPUT pPdu pointer to PDU
|
||
*
|
||
* RETURN VALUE
|
||
* Error return codes defined in h245com.h
|
||
*/
|
||
|
||
HRESULT MRSE1_RequestModeAckF (Object_t *pObject, PDU_t *pPdu)
|
||
{
|
||
ASSERT(pObject->Entity == MRSE_OUT);
|
||
ASSERT(pObject->State == MRSE_WAIT);
|
||
H245TRACE(pObject->dwInst, 2, "MRSE1_RequestModeAck:%d", pObject->Key);
|
||
|
||
if (pPdu->u.MSCMg_rspns.u.requestModeAck.sequenceNumber ==
|
||
pObject->pInstance->StateMachine.byMrseOutSequence)
|
||
{
|
||
// Reset timer T109
|
||
FsmStopTimer(pObject);
|
||
|
||
// Send TRANSFER.confirm to H.245 user
|
||
pObject->State = MRSE_IDLE;
|
||
H245FsmConfirm(pPdu, H245_CONF_MRSE, pObject->pInstance, pObject->dwTransId, FSM_OK);
|
||
}
|
||
|
||
return 0;
|
||
} // MRSE1_RequestModeAck
|
||
|
||
|
||
|
||
/*
|
||
* NAME
|
||
* MRSE1_RequestModeRejF - RequestModeReject in AWAITING RESPONSE state
|
||
*
|
||
*
|
||
* PARAMETERS
|
||
* INPUT pObject pointer to State Entity
|
||
* INPUT pPdu pointer to PDU
|
||
*
|
||
* RETURN VALUE
|
||
* Error return codes defined in h245com.h
|
||
*/
|
||
|
||
HRESULT MRSE1_RequestModeRejF (Object_t *pObject, PDU_t *pPdu)
|
||
{
|
||
ASSERT(pObject->Entity == MRSE_OUT);
|
||
ASSERT(pObject->State == MRSE_WAIT);
|
||
H245TRACE(pObject->dwInst, 2, "MRSE0_RequestModeRej:%d", pObject->Key);
|
||
|
||
if (pPdu->u.MSCMg_rspns.u.requestModeReject.sequenceNumber ==
|
||
pObject->pInstance->StateMachine.byMrseOutSequence)
|
||
{
|
||
// Reset timer T109
|
||
FsmStopTimer(pObject);
|
||
|
||
// Send REJECT.indication to H.245 user
|
||
// CAUSE = RequestModeReject.cause
|
||
pObject->State = MRSE_IDLE;
|
||
H245FsmConfirm(pPdu, H245_CONF_MRSE_REJECT, pObject->pInstance, pObject->dwTransId, FSM_OK);
|
||
}
|
||
|
||
return 0;
|
||
} // MRSE1_RequestModeRej
|
||
|
||
|
||
|
||
/*
|
||
* NAME
|
||
* MRSE1_T109ExpiryF - timer T109 Expiry
|
||
*
|
||
*
|
||
* PARAMETERS
|
||
* INPUT pObject pointer to State Entity
|
||
* INPUT pPdu pointer to PDU
|
||
*
|
||
* RETURN VALUE
|
||
* Error return codes defined in h245com.h
|
||
*/
|
||
|
||
HRESULT MRSE1_T109ExpiryF (Object_t *pObject, PDU_t *pPdu)
|
||
{
|
||
HRESULT lError;
|
||
PDU_t * pOut;
|
||
unsigned short wNumber = (unsigned short) pObject->Key;
|
||
|
||
ASSERT(pObject->Entity == MRSE_OUT);
|
||
ASSERT(pObject->State == MRSE_WAIT);
|
||
ASSERT(pPdu == NULL);
|
||
H245TRACE(pObject->dwInst, 2, "MRSE1_T109Expiry:%d", pObject->Key);
|
||
|
||
// Send RequestModeRelease PDU to remote peer
|
||
pOut = MemAlloc(sizeof(*pOut));
|
||
if (pOut == NULL)
|
||
{
|
||
H245TRACE(pObject->dwInst, 2,
|
||
"MRSE1_T109ExpiryF: memory allocation failed");
|
||
return H245_ERROR_NOMEM;
|
||
}
|
||
pOut->choice = indication_chosen;
|
||
pOut->u.indication.choice = requestModeRelease_chosen;
|
||
lError = sendPDU(pObject->pInstance, pOut);
|
||
MemFree(pOut);
|
||
|
||
// Send REJECT.indication to H.245 user
|
||
// SOURCE := PROTOCOL
|
||
pObject->State = MRSE_IDLE;
|
||
H245FsmConfirm(NULL, H245_CONF_MRSE_EXPIRED, pObject->pInstance, pObject->dwTransId, FSM_OK);
|
||
|
||
return lError;
|
||
} // MRSE1_T109Expiry
|
||
|
||
/***********************************************************************
|
||
*
|
||
* IN-COMING FINITE STATE MACHINE FUNCTIONS
|
||
*
|
||
***********************************************************************/
|
||
|
||
/*
|
||
* NAME
|
||
* MRSE0_RequestModeF - RequestMode received in IDLE state
|
||
*
|
||
*
|
||
* PARAMETERS
|
||
* INPUT pObject pointer to State Entity
|
||
* INPUT pPdu pointer to PDU
|
||
*
|
||
* RETURN VALUE
|
||
* Error return codes defined in h245com.h
|
||
*/
|
||
|
||
HRESULT MRSE0_RequestModeF (Object_t *pObject, PDU_t *pPdu)
|
||
{
|
||
ASSERT(pObject->Entity == MRSE_IN);
|
||
ASSERT(pObject->State == MRSE_IDLE);
|
||
H245TRACE(pObject->dwInst, 2, "MRSE0_RequestMode:%d", pObject->Key);
|
||
|
||
pObject->byInSequence = (unsigned char)
|
||
pPdu->u.MltmdSystmCntrlMssg_rqst.u.requestMode.sequenceNumber;
|
||
|
||
// Send TRANSFER.indication to H.245 user
|
||
pObject->State = MRSE_WAIT;
|
||
H245FsmIndication(pPdu, H245_IND_MRSE, pObject->pInstance, pObject->dwTransId, FSM_OK);
|
||
|
||
return 0;
|
||
} // MRSE0_RequestMode
|
||
|
||
|
||
|
||
/*
|
||
* NAME
|
||
* MRSE1_RequestModeF - RequestMode received in AWAITING RESPONSE state
|
||
*
|
||
*
|
||
* PARAMETERS
|
||
* INPUT pObject pointer to State Entity
|
||
* INPUT pPdu pointer to PDU
|
||
*
|
||
* RETURN VALUE
|
||
* Error return codes defined in h245com.h
|
||
*/
|
||
|
||
HRESULT MRSE1_RequestModeF (Object_t *pObject, PDU_t *pPdu)
|
||
{
|
||
ASSERT(pObject->Entity == MRSE_IN);
|
||
ASSERT(pObject->State == MRSE_WAIT);
|
||
H245TRACE(pObject->dwInst, 2, "MRSE1_RequestMode:%d", pObject->Key);
|
||
|
||
pObject->byInSequence = (unsigned char)
|
||
pPdu->u.MltmdSystmCntrlMssg_rqst.u.requestMode.sequenceNumber;
|
||
|
||
#if defined(SDL_COMPLIANT)
|
||
// Send REJECT.indication to H.245 user
|
||
H245FsmIndication(pPdu, H245_IND_MRSE_RELEASE, pObject->pInstance, pObject->dwTransId, FSM_OK);
|
||
#endif
|
||
|
||
// Send TRANSFER.indication to H.245 user
|
||
H245FsmIndication(pPdu, H245_IND_MRSE, pObject->pInstance, pObject->dwTransId, FSM_OK);
|
||
|
||
return 0;
|
||
} // MRSE1_RequestMode
|
||
|
||
|
||
|
||
/*
|
||
* NAME
|
||
* MRSE1_RequestModeReleaseF - RequestModeRelease received in AWAITING RESPONSE state
|
||
*
|
||
*
|
||
* PARAMETERS
|
||
* INPUT pObject pointer to State Entity
|
||
* INPUT pPdu pointer to PDU
|
||
*
|
||
* RETURN VALUE
|
||
* Error return codes defined in h245com.h
|
||
*/
|
||
|
||
HRESULT MRSE1_RequestModeReleaseF (Object_t *pObject, PDU_t *pPdu)
|
||
{
|
||
ASSERT(pObject->Entity == MRSE_IN);
|
||
ASSERT(pObject->State == MRSE_WAIT);
|
||
H245TRACE(pObject->dwInst, 2, "MRSE1_RequestModeRelease:%d", pObject->Key);
|
||
|
||
// Send REJECT.indication to H.245 user
|
||
// SOURCE:=PROTOCOL
|
||
pObject->State = MRSE_IDLE;
|
||
H245FsmIndication(pPdu, H245_IND_MRSE_RELEASE, pObject->pInstance, pObject->dwTransId, FSM_OK);
|
||
|
||
return 0;
|
||
} // MRSE1_RequestModeRelease
|
||
|
||
|
||
|
||
/*
|
||
* NAME
|
||
* MRSE1_TRANSFER_responseF - TRANSFER.response from API in AWAITING RESPONSE state
|
||
*
|
||
*
|
||
* PARAMETERS
|
||
* INPUT pObject pointer to State Entity
|
||
* INPUT pPdu pointer to PDU
|
||
*
|
||
* RETURN VALUE
|
||
* Error return codes defined in h245com.h
|
||
*/
|
||
|
||
HRESULT MRSE1_TRANSFER_responseF (Object_t *pObject, PDU_t *pPdu)
|
||
{
|
||
ASSERT(pObject->Entity == MRSE_IN);
|
||
ASSERT(pObject->State == MRSE_WAIT);
|
||
H245TRACE(pObject->dwInst, 2, "MRSE1_TRANSFER_response:%d", pObject->Key);
|
||
|
||
// Send RequestModeAck PDU to remote peer
|
||
pObject->State = MRSE_IDLE;
|
||
pPdu->u.MSCMg_rspns.u.requestModeAck.sequenceNumber = pObject->byInSequence;
|
||
return sendPDU(pObject->pInstance, pPdu);
|
||
} // MRSE1_TRANSFER_response
|
||
|
||
|
||
|
||
/*
|
||
* NAME
|
||
* MRSE1_REJECT_requestF - REJECT.request from API in AWAITING RESPONSE state
|
||
*
|
||
*
|
||
* PARAMETERS
|
||
* INPUT pObject pointer to State Entity
|
||
* INPUT pPdu pointer to PDU
|
||
*
|
||
* RETURN VALUE
|
||
* Error return codes defined in h245com.h
|
||
*/
|
||
|
||
HRESULT MRSE1_REJECT_requestF (Object_t *pObject, PDU_t *pPdu)
|
||
{
|
||
ASSERT(pObject->Entity == MRSE_IN);
|
||
ASSERT(pObject->State == MRSE_WAIT);
|
||
H245TRACE(pObject->dwInst, 2, "MRSE1_REJECT_request:%d", pObject->Key);
|
||
|
||
// Send RequestModeReject PDU to remote
|
||
pObject->State = MRSE_IDLE;
|
||
pPdu->u.MSCMg_rspns.u.requestModeReject.sequenceNumber = pObject->byInSequence;
|
||
return sendPDU(pObject->pInstance, pPdu);
|
||
} // MRSE1_REJECT_request
|
||
|