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freeswitch/libs/openzap/src/isdn/DMSStateTE.c

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/*****************************************************************************
FileName: DMSStateTE.c
Contents: DMS-100 ISDN State Engine for TE (User Mode).
The controlling state engine for Q.931 is the state engine
on the NT side. The state engine on the TE side is a slave
of this. The TE side maintain it's own states as described in
ITU-T Q931, but will in raise conditions be overridden by
the NT side.
This reference implementation uses a process per message,
meaning that each message must check call states. This
is easier for dialect maintenance as each message proc
can be replaced individually. A new TE variant only
need to copy the Q931CreateTE and replace those procs or
need to override.
License/Copyright:
Copyright (c) 2007, Jan Vidar Berger, Case Labs, Ltd. All rights reserved.
email:janvb@caselaboratories.com
Copyright (c) 2007, Michael Jerris. All rights reserved.
email:mike@jerris.com
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the name of the Case Labs, Ltd nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
#include "DMS.h"
extern L3INT Q931L4HeaderSpace;
/*****************************************************************************
Function: DMSCreateTE
Description: Will create the National TE as a Dialect in the stack. The first
bulk set up the message handlers, the second bulk the IE
encoders/coders, and the last bulk set up the state table.
Parameters: i Dialect index
*****************************************************************************/
void DMSCreateTE(L3UCHAR i)
{
Q931SetMesProc(Q931mes_ALERTING, i, Q931ProcAlertingTE, Q931Umes_Alerting, Q931Pmes_Alerting);
Q931SetMesProc(Q931mes_CALL_PROCEEDING, i, Q931ProcCallProceedingTE, Q931Umes_CallProceeding, Q931Pmes_CallProceeding);
Q931SetMesProc(Q931mes_CONNECT, i, DMSProc0x07TE, DMSUmes_0x07, DMSPmes_0x07);
Q931SetMesProc(Q931mes_CONNECT_ACKNOWLEDGE, i, DMSProc0x0fTE, DMSUmes_0x0f, DMSPmes_0x0f);
Q931SetMesProc(Q931mes_PROGRESS, i, Q931ProcProgressTE, Q931Umes_Progress, Q931Pmes_Progress);
Q931SetMesProc(Q931mes_SETUP, i, Q931ProcSetupTE, DMSUmes_Setup, DMSPmes_Setup);
Q931SetMesProc(Q931mes_SETUP_ACKNOWLEDGE, i, Q931ProcSetupAckTE, Q931Umes_SetupAck, Q931Pmes_SetupAck);
Q931SetMesProc(Q931mes_RESUME, i, Q931ProcResumeTE, Q931Umes_Resume, Q931Pmes_Resume);
Q931SetMesProc(Q931mes_RESUME_ACKNOWLEDGE, i, Q931ProcResumeAckTE, Q931Umes_ResumeAck, Q931Pmes_ResumeAck);
Q931SetMesProc(Q931mes_RESUME_REJECT, i, Q931ProcResumeRejectTE, Q931Umes_ResumeReject, Q931Pmes_ResumeReject);
Q931SetMesProc(Q931mes_SUSPEND, i, Q931ProcSuspendTE, Q931Umes_Suspend, Q931Pmes_Suspend);
Q931SetMesProc(Q931mes_SUSPEND_ACKNOWLEDGE, i, Q931ProcSuspendAckTE, Q931Umes_SuspendAck, Q931Pmes_SuspendAck);
Q931SetMesProc(Q931mes_SUSPEND_REJECT, i, Q931ProcSuspendRejectTE, Q931Umes_SuspendReject, Q931Pmes_SuspendReject);
Q931SetMesProc(Q931mes_USER_INFORMATION, i, Q931ProcUserInformationTE, Q931Umes_UserInformation, Q931Pmes_UserInformation);
Q931SetMesProc(Q931mes_DISCONNECT, i, Q931ProcDisconnectTE, Q931Umes_Disconnect, Q931Pmes_Disconnect);
Q931SetMesProc(Q931mes_RELEASE, i, Q931ProcReleaseTE, Q931Umes_Release, Q931Pmes_Release);
Q931SetMesProc(Q931mes_RELEASE_COMPLETE, i, Q931ProcReleaseCompleteTE, Q931Umes_ReleaseComplete, Q931Pmes_ReleaseComplete);
Q931SetMesProc(Q931mes_RESTART, i, Q931ProcRestartTE, Q931Umes_Restart, Q931Pmes_Restart);
Q931SetMesProc(Q931mes_RESTART_ACKNOWLEDGE, i, Q931ProcRestartAckTE, Q931Umes_RestartAck, Q931Pmes_RestartAck);
Q931SetMesProc(Q931mes_CONGESTION_CONTROL, i, Q931ProcCongestionControlTE, Q931Umes_CongestionControl, Q931Pmes_CongestionControl);
Q931SetMesProc(Q931mes_INFORMATION, i, Q931ProcInformationTE, Q931Umes_Information, Q931Pmes_Information);
Q931SetMesProc(Q931mes_NOTIFY, i, Q931ProcNotifyTE, Q931Umes_Notify, Q931Pmes_Notify);
Q931SetMesProc(Q931mes_STATUS, i, Q931ProcStatusTE, Q931Umes_Status, Q931Pmes_Status);
Q931SetMesProc(Q931mes_STATUS_ENQUIRY, i, Q931ProcStatusEnquiryTE, Q931Umes_StatusEnquiry, Q931Pmes_StatusEnquiry);
Q931SetMesProc(Q931mes_SEGMENT, i, Q931ProcSegmentTE, Q931Umes_Segment, Q931Pmes_Segment);
Q931SetMesProc(Q932mes_FACILITY, i, Q932ProcFacilityTE, Q932Umes_Facility, Q932Pmes_Facility);
Q931SetMesProc(Q932mes_HOLD, i, Q932ProcHoldTE, Q932Umes_Hold, Q932Pmes_Hold);
Q931SetMesProc(Q932mes_HOLD_ACKNOWLEDGE, i, Q932ProcHoldAckTE, Q932Umes_HoldAck, Q932Pmes_HoldAck);
Q931SetMesProc(Q932mes_HOLD_REJECT, i, Q932ProcHoldRejectTE, Q932Umes_HoldReject, Q932Pmes_HoldReject);
Q931SetMesProc(Q932mes_REGISTER, i, Q932ProcRegisterTE, Q932Umes_Register, Q932Pmes_Register);
Q931SetMesProc(Q932mes_RETRIEVE, i, Q932ProcRetrieveTE, Q932Umes_Retrieve, Q932Pmes_Retrieve);
Q931SetMesProc(Q932mes_RETRIEVE_ACKNOWLEDGE, i, Q932ProcRetrieveAckTE, Q932Umes_RetrieveAck, Q932Pmes_RetrieveAck);
Q931SetMesProc(Q932mes_RETRIEVE_REJECT, i, Q932ProcRetrieveRejectTE, Q932Umes_RetrieveReject, Q932Pmes_RetrieveReject);
/* Set up the IE encoder/decoder handle table.*/
Q931SetIEProc(Q931ie_SEGMENTED_MESSAGE, i, Q931Pie_Segment, Q931Uie_Segment);
Q931SetIEProc(Q931ie_BEARER_CAPABILITY, i, Q931Pie_BearerCap, Q931Uie_BearerCap);
Q931SetIEProc(Q931ie_CAUSE, i, Q931Pie_Cause, Q931Uie_Cause);
Q931SetIEProc(Q931ie_CALL_IDENTITY, i, Q931Pie_CallID, Q931Uie_CallID);
Q931SetIEProc(Q931ie_CALL_STATE, i, Q931Pie_CallState, Q931Uie_CallState);
Q931SetIEProc(Q931ie_CHANGE_STATUS, i, Q931Pie_ChangeStatus, Q931Uie_ChangeStatus);
Q931SetIEProc(Q931ie_CHANNEL_IDENTIFICATION, i, Q931Pie_ChanID, Q931Uie_ChanID);
Q931SetIEProc(Q931ie_PROGRESS_INDICATOR, i, Q931Pie_ProgInd, Q931Uie_ProgInd);
Q931SetIEProc(Q931ie_NETWORK_SPECIFIC_FACILITIES, i, Q931Pie_NetFac, Q931Uie_NetFac);
Q931SetIEProc(Q931ie_NOTIFICATION_INDICATOR, i, Q931Pie_NotifInd, Q931Uie_NotifInd);
Q931SetIEProc(Q931ie_DISPLAY, i, Q931Pie_Display, Q931Uie_Display);
Q931SetIEProc(Q931ie_DATETIME, i, Q931Pie_DateTime, Q931Uie_DateTime);
Q931SetIEProc(Q931ie_KEYPAD_FACILITY, i, Q931Pie_KeypadFac, Q931Uie_KeypadFac);
Q931SetIEProc(Q931ie_SIGNAL, i, Q931Pie_Signal, Q931Uie_Signal);
Q931SetIEProc(Q931ie_TRANSIT_DELAY_SELECTION_AND_IND, i, Q931Pie_TransNetSel, Q931Uie_TransNetSel);
Q931SetIEProc(Q931ie_CALLING_PARTY_NUMBER, i, Q931Pie_CallingNum, Q931Uie_CallingNum);
Q931SetIEProc(Q931ie_CALLING_PARTY_SUBADDRESS, i, Q931Pie_CallingSub, Q931Uie_CallingSub);
Q931SetIEProc(Q931ie_CALLED_PARTY_NUMBER, i, Q931Pie_CalledNum, Q931Uie_CalledNum);
Q931SetIEProc(Q931ie_CALLED_PARTY_SUBADDRESS, i, Q931Pie_CalledSub, Q931Uie_CalledSub);
Q931SetIEProc(Q931ie_TRANSIT_NETWORK_SELECTION, i, Q931Pie_TransNetSel, Q931Uie_TransNetSel);
Q931SetIEProc(Q931ie_RESTART_INDICATOR, i, Q931Pie_RestartInd, Q931Uie_RestartInd);
Q931SetIEProc(Q931ie_LOW_LAYER_COMPATIBILITY, i, Q931Pie_LLComp, Q931Uie_LLComp);
Q931SetIEProc(Q931ie_HIGH_LAYER_COMPATIBILITY, i, Q931Pie_HLComp, Q931Uie_HLComp);
Q931SetIEProc(Q931ie_USER_USER, i, Q931Pie_UserUser, Q931Uie_UserUser);
Q931SetIEProc(Q931ie_GENERIC_DIGITS, i, Q931Pie_GenericDigits, Q931Uie_GenericDigits);
/* The following define a state machine. The point is that the Message */
/* procs can when search this to find out if the message/state */
/* combination is legale. If not, the proc for unexpected message apply.*/
/* State 0 Idle */
Q931AddStateEntry(i, Q931_U0, Q931mes_RESUME, 2);
Q931AddStateEntry(i, Q931_U0, Q931mes_SETUP, 4);
Q931AddStateEntry(i, Q931_U0, Q931mes_SETUP, 2);
Q931AddStateEntry(i, Q931_U0, Q931mes_STATUS, 4);
Q931AddStateEntry(i, Q931_U0, Q931mes_RELEASE, 4);
Q931AddStateEntry(i, Q931_U0, Q931mes_RELEASE_COMPLETE, 4);
/* State 1 Call Initiating */
Q931AddStateEntry(i, Q931_U1, Q931mes_DISCONNECT, 2);
Q931AddStateEntry(i, Q931_U1, Q931mes_SETUP_ACKNOWLEDGE, 4);
Q931AddStateEntry(i, Q931_U1, Q931mes_RELEASE_COMPLETE, 4);
Q931AddStateEntry(i, Q931_U1, Q931mes_CALL_PROCEEDING, 4);
Q931AddStateEntry(i, Q931_U1, Q931mes_ALERTING, 4);
Q931AddStateEntry(i, Q931_U1, Q931mes_CONNECT, 4);
/* State 2 Overlap Sending */
Q931AddStateEntry(i, Q931_U2, Q931mes_INFORMATION, 2);
Q931AddStateEntry(i, Q931_U2, Q931mes_CALL_PROCEEDING, 4);
Q931AddStateEntry(i, Q931_U2, Q931mes_ALERTING, 4);
Q931AddStateEntry(i, Q931_U2, Q931mes_PROGRESS, 4);
Q931AddStateEntry(i, Q931_U2, Q931mes_CONNECT, 4);
Q931AddStateEntry(i, Q931_U2, Q931mes_RELEASE, 2);
/* State 3 Outgoing Call Proceeding */
Q931AddStateEntry(i, Q931_U3, Q931mes_PROGRESS, 4);
Q931AddStateEntry(i, Q931_U3, Q931mes_ALERTING, 4);
Q931AddStateEntry(i, Q931_U3, Q931mes_CONNECT, 4);
Q931AddStateEntry(i, Q931_U3, Q931mes_RELEASE, 2);
/* State 4 Call Delivered */
Q931AddStateEntry(i, Q931_U4, Q931mes_CONNECT, 4);
/* State 6 Call Precent */
Q931AddStateEntry(i, Q931_U6, Q931mes_INFORMATION, 2);
Q931AddStateEntry(i, Q931_U6, Q931mes_ALERTING, 2);
Q931AddStateEntry(i, Q931_U6, Q931mes_CALL_PROCEEDING, 2);
Q931AddStateEntry(i, Q931_U6, Q931mes_CONNECT, 2);
Q931AddStateEntry(i, Q931_U6, Q931mes_RELEASE_COMPLETE, 2);
Q931AddStateEntry(i, Q931_U6, Q931mes_RELEASE, 4);
Q931AddStateEntry(i, Q931_U6, Q931mes_DISCONNECT, 4);
/* State 7 Call Received */
Q931AddStateEntry(i, Q931_U7, Q931mes_CONNECT, 2);
/* State 8 Connect request */
Q931AddStateEntry(i, Q931_U8, Q931mes_CONNECT_ACKNOWLEDGE, 4);
/* State 9 Incoming Call Proceeding */
Q931AddStateEntry(i, Q931_U9, Q931mes_CONNECT, 2);
Q931AddStateEntry(i, Q931_U9, Q931mes_ALERTING, 2);
Q931AddStateEntry(i, Q931_U9, Q931mes_PROGRESS, 2);
/* State 10 Active */
Q931AddStateEntry(i, Q931_U10, Q931mes_SUSPEND, 2);
Q931AddStateEntry(i, Q931_U10, Q931mes_NOTIFY, 4);
Q931AddStateEntry(i, Q931_U10, Q931mes_NOTIFY, 2);
/* State 11 Disconnect Request */
Q931AddStateEntry(i, Q931_U11, Q931mes_RELEASE, 4);
Q931AddStateEntry(i, Q931_U11, Q931mes_DISCONNECT, 4);
Q931AddStateEntry(i, Q931_U11, Q931mes_NOTIFY, 4);
/* State 12 Disconnect Ind */
Q931AddStateEntry(i, Q931_U12, Q931mes_RELEASE, 4);
Q931AddStateEntry(i, Q931_U12, Q931mes_RELEASE, 2);
/* State 15 Suspend Request */
Q931AddStateEntry(i, Q931_U15, Q931mes_SUSPEND_ACKNOWLEDGE, 4);
Q931AddStateEntry(i, Q931_U15, Q931mes_SUSPEND_REJECT, 4);
Q931AddStateEntry(i, Q931_U15, Q931mes_DISCONNECT, 4);
Q931AddStateEntry(i, Q931_U15, Q931mes_RELEASE, 4);
/* TODO
Q931AddStateEntry(i, Q931_U17,
Q931AddStateEntry(i, Q931_U19,
Q931AddStateEntry(i, Q931_U25,
*/
}
/*****************************************************************************
Function: DMSProc0x0fTE
*****************************************************************************/
L3INT DMSProc0x0fTE(Q931_TrunkInfo_t *pTrunk, L3UCHAR * buf, L3INT iFrom)
{
Q931mes_Header *pMes = (Q931mes_Header *)&buf[Q931L4HeaderSpace];
L3INT callIndex;
L3INT ret = Q931E_NO_ERROR;
if (pMes->ProtDisc == 8) {
/* Find the call using CRV */
ret = Q931FindCRV(pTrunk, pMes->CRV, &callIndex);
if (ret != Q931E_NO_ERROR)
return ret;
/* TODO chack against state table for illegal or unexpected message here*/
/* TODO - Set correct timer here */
Q931StartTimer(pTrunk, callIndex, Q931_TIMER_T303);
}
if (iFrom == 4) {
/* TODO Add proc here*/
ret = Q931Tx32Data(pTrunk, 0, buf, pMes->Size);
}
else if (iFrom == 2) {
/* TODO Add proc here*/
ret = Q931Tx34(pTrunk, buf, pMes->Size);
if (pMes->ProtDisc == 3 && pTrunk->autoServiceAck) {
Q931AckService(pTrunk, buf);
}
}
return ret;
}
/*****************************************************************************
Function: DMSProc0x07TE
*****************************************************************************/
L3INT DMSProc0x07TE(Q931_TrunkInfo_t *pTrunk, L3UCHAR * buf, L3INT iFrom)
{
Q931mes_Header *pMes = (Q931mes_Header *)&buf[Q931L4HeaderSpace];
L3INT callIndex;
L3INT ret = Q931E_NO_ERROR;
if (pMes->ProtDisc == 8) {
/* Find the call using CRV */
ret = Q931FindCRV(pTrunk, pMes->CRV, &callIndex);
if (ret != Q931E_NO_ERROR)
return ret;
/* TODO chack against state table for illegal or unexpected message here*/
/* TODO - Set correct timer here */
Q931StartTimer(pTrunk, callIndex, Q931_TIMER_T303);
}
if (iFrom == 4) {
/* TODO Add proc here*/
ret = Q931Tx32Data(pTrunk, 0, buf, pMes->Size);
}
else if (iFrom == 2) {
/* TODO Add proc here*/
ret = Q931Tx34(pTrunk, buf, pMes->Size);
}
return ret;
}
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