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DHA: properly implement differences of ACTIVE and INIT SENT state

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When we are in initiation_sent state, the logic regarding the neccessity
and treatment of the dialogueInfo is different than active state.

However, it is reasonably similar so that we can use the same function
'is_or_active()' to implement the handling of TR-{CONTINUE,END}.ind
in one function, respectively rather than copy+paste code.
master
Harald Welte 10 years ago
parent 4eef43beee
commit 38c579aca9
1 changed files with 142 additions and 146 deletions
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  1. 288
      TCAP/src/ITU/tcap_dha_fsm.erl

288
TCAP/src/ITU/tcap_dha_fsm.erl
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@ -332,7 +332,8 @@ initiation_received({'TC', 'U-ABORT', request, AbortParms}, State) when is_recor
'application-context-name' = AbortParms#'TC-U-ABORT'.appContextName,
result = 'reject-permanent',
'result-source-diagnostic' = {'dialogue-service-user', 'application-context-name-not-supported'}}),
UserData = #'TR-user-data'{dialoguePortion = dialogue_ext(AARE)};
UserData = #'TR-user-data'{dialoguePortion = dialogue_ext(AARE),
componentPortion = asn1_NOVALUE};
_AppContextName when AbortParms#'TC-U-ABORT'.abortReason == dialogueRefused ->
%% Set protocol version = 1
%% Build AARE-pdu (rejected)
@ -347,7 +348,8 @@ initiation_received({'TC', 'U-ABORT', request, AbortParms}, State) when is_recor
ABRT = 'DialoguePDUs':encode('ABRT-apdu',
#'ABRT-apdu'{'abort-source' = 'dialogue-service-user',
'user-information' = AbortParms#'TC-U-ABORT'.userInfo}),
UserData = #'TR-user-data'{dialoguePortion = dialogue_ext(ABRT)}
UserData = #'TR-user-data'{dialoguePortion = dialogue_ext(ABRT),
componentPortion = asn1_NOVALUE}
end,
%% TR-U-ABORT request to TSL
TrParms = #'TR-U-ABORT'{qos = AbortParms#'TC-U-ABORT'.qos,
@ -387,58 +389,8 @@ initiation_sent({'TC', 'U-ABORT', request, AbortParms}, State) when is_record(Ab
%% reference: Figure A.5/Q.774 (sheet 7 of 11)
%%% TR-END indication from TSL
initiation_sent({'TR', 'END', indication, EndParms}, State) when is_record(EndParms, 'TR-END') ->
if
is_record(EndParms#'TR-END'.userData, 'TR-user-data'),
(EndParms#'TR-END'.userData)#'TR-user-data'.componentPortion /= asn1_NOVALUE ->
case 'TC':decode('Components', (EndParms#'TR-END'.userData)#'TR-user-data'.componentPortion) of
{ok, [] = Components} -> ComponentsPresent = false;
{ok, Components} -> ComponentsPresent = true
end;
true ->
Components = undefined,
ComponentsPresent = false
end,
%% Dialogue portion included?
%% AC Mode set?
%% Extract dialogue portion
%% Dialogue portion correct?
case extract_dialogue_portion(EndParms#'TR-END'.userData, State#state.appContextMode) of
abort ->
%% Discard components
%% TC-P-ABORT indication to TCU
TcParms = #'TC-P-ABORT'{qos = EndParms#'TR-END'.qos,
dialogueID = State#state.did,
pAbort = abnormalDialogue},
NewState = State#state{parms = EndParms},
gen_fsm:send_event(NewState#state.usap, {'TC', 'P-ABORT', indication, TcParms}),
%% Dialogue terminated to CHA
gen_server:cast(NewState#state.cco, 'dialogue-terminated'),
%% Free dialogue ID
{stop, normal, NewState};
AARE ->
%% TC-END indication to TCU
TcParms = #'TC-END'{qos = EndParms#'TR-END'.qos,
dialogueID = State#state.did,
appContextName = State#state.appContextMode,
componentsPresent = ComponentsPresent,
userInfo = AARE,
termination = EndParms#'TR-END'.termination},
NewState = State#state{parms = EndParms},
gen_fsm:send_event(NewState#state.usap, {'TC', 'END', indication, TcParms}),
%% Any components?
case ComponentsPresent of
true ->
%% Components to CHA
gen_server:cast(NewState#state.cco, {components, Components});
false ->
ok
end,
%% Dialogue terminated to CHA
gen_server:cast(NewState#state.cco, 'dialogue-terminated'),
%% Free dialogue ID
{stop, normal, NewState}
end;
initiation_sent(W={'TR', 'END', indication, _EndParms}, State) ->
is_or_active(initiation_sent, W, State);
%% reference: Figure A.5/Q.774 (sheet 7 of 11)
%% NOTE: currently the TCO short circuits this function and sends directly to TCU
@ -454,66 +406,9 @@ initiation_sent({'TR', 'NOTICE', indication, NoticeParms}, State) when is_record
%% reference: Figure A.5/Q.774 (sheet 8 of 11)
%% TR-CONTINUE indication from TSL
initiation_sent({'TR', 'CONTINUE', indication, ContParms}, State) when is_record(ContParms, 'TR-CONTINUE') ->
if
is_record(ContParms#'TR-CONTINUE'.userData, 'TR-user-data'),
(ContParms#'TR-CONTINUE'.userData)#'TR-user-data'.componentPortion /= asn1_NOVALUE ->
case 'TC':decode('Components', (ContParms#'TR-CONTINUE'.userData)#'TR-user-data'.componentPortion) of
{ok, [] = Components} -> ComponentsPresent = false;
{ok, Components} -> ComponentsPresent = true
end;
true ->
Components = undefined,
ComponentsPresent = false
end,
%% Dialogue portion included?
%% AC Mode set?
%% Extract dialogue portion
%% Dialogue portion correct?
io:format("Components: ~p\n", [Components]),
io:format("Dialogue: ~p\n", [(ContParms#'TR-CONTINUE'.userData)#'TR-user-data'.dialoguePortion]),
case extract_dialogue_portion(ContParms#'TR-CONTINUE'.userData, State#state.appContextMode) of
abort ->
%% Discard components
%% TC-P-ABORT indication to TCU
TcParms = #'TC-P-ABORT'{qos = ContParms#'TR-CONTINUE'.qos,
dialogueID = State#state.did,
pAbort = abnormalDialogue},
NewState = State#state{parms = ContParms},
gen_fsm:send_event(NewState#state.usap, {'TC', 'P-ABORT', indication, TcParms}),
%% Build ABRT apdu
ABRT = 'DialoguePDUs':encode('ABRT-apdu',
#'ABRT-apdu'{'abort-source' = 'dialogue-service-provider'}),
UserData = #'TR-user-data'{dialoguePortion = dialogue_ext(ABRT)},
%% TR-U-ABORT request to TSL
TrParms = #'TR-U-ABORT'{qos = ContParms#'TR-CONTINUE'.qos,
transactionID = NewState#state.otid, userData = UserData},
LastState = State#state{parms = ContParms},
gen_server:cast(LastState#state.tco, {'TR', 'U-ABORT', request, TrParms}),
%% Dialogue terminated to CHA
gen_server:cast(LastState#state.cco, 'dialogue-terminated'),
%% Free dialogue ID
{stop, normal, LastState};
AARE ->
%% TC-CONTINUE indication to TCU
TcParms = #'TC-CONTINUE'{qos = ContParms#'TR-CONTINUE'.qos,
origAddress = ContParms#'TR-CONTINUE'.origAddress,
appContextName = State#state.appContextMode,
dialogueID = State#state.did,
userInfo = AARE,
componentsPresent = ComponentsPresent},
NewState = State#state{parms = ContParms},
gen_fsm:send_event(NewState#state.usap, {'TC', 'CONTINUE', indication, TcParms}),
%% Any components?
case ComponentsPresent of
true ->
%% Components to CHA
gen_server:cast(NewState#state.cco, {components, Components});
false ->
ok
end,
{next_state, active, NewState}
end;
initiation_sent(W={'TR', 'CONTINUE', indication, _ContParms}, State) ->
is_or_active(initiation_sent, W, State);
%% reference: Figure A.5/Q.774 (sheet 8 of 11)
%% TR-U-ABORT indication from TSL
@ -646,47 +541,140 @@ active({'TC', 'END', request, EndParms}, State) when is_record(EndParms, 'TC-END
%% reference: Figuer A.5/Q774 (sheet 10 of 11)
%% TR-END indication from TSL
active({'TR', 'END', indication, EndParms}, State) when is_record(EndParms, 'TR-END') ->
UserData = EndParms#'TR-END'.userData,
active(W={'TR', 'END', indication, _EndParms}, State) ->
is_or_active(active, W, State);
%% reference: Figure A.5/Q.774 (sheet 11 of 11)
%% TR-CONTINUE indication from TSL
active(W={'TR', 'CONTINUE', indication, _ContParms}, State) ->
is_or_active(active, W, State);
%% TR-U-ABORT indication from TSL
active({'TR', 'U-ABORT', indication, AbortParms}, State) when is_record(AbortParms, 'TR-U-ABORT') ->
initiation_sent({'TR', 'U-ABORT', indication, AbortParms}, State);
%% TR-P-ABORT indication from TSL
active({'TR', 'P-ABORT', indication, AbortParms}, State) when is_record(AbortParms, 'TR-P-ABORT') ->
initiation_sent({'TR', 'P-ABORT', indication, AbortParms}, State).
%% reference: Figure A.5/Q.774 (sheet 8 of 11)
%% reference: Figure A.5/Q.774 (sheet 11 of 11)
%% TR-CONTINUE indication from TSL
is_or_active(StateName, {'TR', 'CONTINUE', indication, ContParms}, State)
when is_record(ContParms, 'TR-CONTINUE') ->
if
UserData#'TR-user-data'.dialoguePortion /= asn1_NOVALUE ->
% discard components
% TC-P-ABORT.ind to TCU
ok;
is_record(ContParms#'TR-CONTINUE'.userData, 'TR-user-data'),
(ContParms#'TR-CONTINUE'.userData)#'TR-user-data'.componentPortion /= asn1_NOVALUE ->
case 'TC':decode('Components', (ContParms#'TR-CONTINUE'.userData)#'TR-user-data'.componentPortion) of
{ok, [] = Components} -> ComponentsPresent = false;
{ok, Components} -> ComponentsPresent = true
end;
true ->
ComponentPortion = UserData#'TR-user-data'.componentPortion,
if
ComponentPortion /= asn1_NOVALUE ->
case 'TC':decode('Components', ComponentPortion) of
{ok, [] = Components} -> ComponentsPresent = false;
{ok, Components} -> ComponentsPresent = true
end;
Components = undefined,
ComponentsPresent = false
end,
%% Dialogue portion included?
%% AC Mode set?
%% Extract dialogue portion
%% Dialogue portion correct?
io:format("Components: ~p\n", [Components]),
io:format("Dialogue: ~p\n", [(ContParms#'TR-CONTINUE'.userData)#'TR-user-data'.dialoguePortion]),
case extract_dialogue_portion(ContParms#'TR-CONTINUE'.userData, State#state.appContextMode, StateName) of
abort ->
%% Discard components
%% TC-P-ABORT indication to TCU
TcAParms = #'TC-P-ABORT'{qos = ContParms#'TR-CONTINUE'.qos,
dialogueID = State#state.did,
pAbort = abnormalDialogue},
NewState = State#state{parms = ContParms},
gen_fsm:send_event(NewState#state.usap, {'TC', 'P-ABORT', indication, TcAParms}),
%% Build ABRT apdu
ABRT = 'DialoguePDUs':encode('ABRT-apdu',
#'ABRT-apdu'{'abort-source' = 'dialogue-service-provider'}),
UserData = #'TR-user-data'{dialoguePortion = dialogue_ext(ABRT),
componentPortion = asn1_NOVALUE},
%% TR-U-ABORT request to TSL
TrParms = #'TR-U-ABORT'{qos = ContParms#'TR-CONTINUE'.qos,
transactionID = ContParms#'TR-CONTINUE'.transactionID,
userData = UserData},
LastState = State#state{parms = ContParms},
gen_server:cast(LastState#state.tco, {'TR', 'U-ABORT', request, TrParms}),
%% Dialogue terminated to CHA
gen_server:cast(LastState#state.cco, 'dialogue-terminated'),
%% Free dialogue ID
{stop, normal, LastState};
AARE ->
%% TC-CONTINUE indication to TCU
TcParms = #'TC-CONTINUE'{qos = ContParms#'TR-CONTINUE'.qos,
origAddress = ContParms#'TR-CONTINUE'.origAddress,
appContextName = State#state.appContextMode,
dialogueID = State#state.did,
userInfo = AARE,
componentsPresent = ComponentsPresent},
NewState = State#state{parms = ContParms},
gen_fsm:send_event(NewState#state.usap, {'TC', 'CONTINUE', indication, TcParms}),
%% Any components?
case ComponentsPresent of
true ->
Components = undefined,
ComponentsPresent = false
%% Components to CHA
gen_server:cast(NewState#state.cco, {components, Components});
false ->
ok
end,
{next_state, active, NewState}
end;
%% reference: Figure A.5/Q.774 (sheet 7 of 11)
%%% TR-END indication from TSL
is_or_active(StateName, {'TR', 'END', indication, EndParms}, State) when is_record(EndParms, 'TR-END') ->
if
is_record(EndParms#'TR-END'.userData, 'TR-user-data'),
(EndParms#'TR-END'.userData)#'TR-user-data'.componentPortion /= asn1_NOVALUE ->
case 'TC':decode('Components', (EndParms#'TR-END'.userData)#'TR-user-data'.componentPortion) of
{ok, [] = Components} -> ComponentsPresent = false;
{ok, Components} -> ComponentsPresent = true
end;
true ->
Components = undefined,
ComponentsPresent = false
end,
%% Dialogue portion included?
%% AC Mode set?
%% Extract dialogue portion
%% Dialogue portion correct?
case extract_dialogue_portion(EndParms#'TR-END'.userData, State#state.appContextMode, StateName) of
abort ->
%% Discard components
%% TC-P-ABORT indication to TCU
TcParms = #'TC-P-ABORT'{qos = EndParms#'TR-END'.qos,
dialogueID = State#state.did,
pAbort = abnormalDialogue},
NewState = State#state{parms = EndParms},
gen_fsm:send_event(NewState#state.usap, {'TC', 'P-ABORT', indication, TcParms}),
%% Dialogue terminated to CHA
gen_server:cast(NewState#state.cco, 'dialogue-terminated'),
%% Free dialogue ID
{stop, normal, NewState};
AARE ->
%% TC-END indication to TCU
TcParms = #'TC-END'{qos = EndParms#'TR-END'.qos,
dialogueID = State#state.did,
appContextName = State#state.appContextMode,
componentsPresent = ComponentsPresent,
userInfo = AARE,
termination = EndParms#'TR-END'.termination},
NewState = State#state{parms = EndParms},
%% Components To CHA
gen_fsm:send_event(NewState#state.usap, {'TC', 'END', indication, TcParms}),
%% Any components?
case ComponentsPresent of
true ->
gen_server:cast(State#state.cco, {components, Components});
_ ->
%% Components to CHA
gen_server:cast(NewState#state.cco, {components, Components});
false ->
ok
end
end,
%% Dialogue terminated to CHA
gen_server:cast(State#state.cco, 'dialogue-terminated'),
%% Free dialogue ID
{stop, normal, State}.
end,
%% Dialogue terminated to CHA
gen_server:cast(NewState#state.cco, 'dialogue-terminated'),
%% Free dialogue ID
{stop, normal, NewState}
end.
%% reference: Figure A.5 bis/Q.774
@ -830,20 +818,28 @@ extract_begin_dialogue_portion(UserData) when is_record(UserData, 'TR-user-data'
extract_begin_dialogue_portion(_DialoguePortion) ->
#'TC-BEGIN'{}.
% if AC is undefined and dialogue portion present -> abort
extract_dialogue_portion(UserData, undefined) when is_record(UserData, 'TR-user-data') and
% ANY: if AC is undefined and dialogue portion present -> abort
extract_dialogue_portion(UserData, undefined, _Any) when is_record(UserData, 'TR-user-data') and
(UserData#'TR-user-data'.dialoguePortion /= undefined) and
(UserData#'TR-user-data'.dialoguePortion /= asn1_NOVALUE) ->
%% Dialogue portion included? (yes) AC mode set? (no)
abort;
% if dialogue portion is not present but App context name is set -> abort
extract_dialogue_portion(UserData, _AppContextName) when not is_record(UserData, 'TR-user-data') or
% IS: if dialogue portion is not present but App context name is set -> abort
extract_dialogue_portion(UserData, _AppContextName, initiation_sent)
when not is_record(UserData, 'TR-user-data') or
(UserData#'TR-user-data'.dialoguePortion == undefined) or
(UserData#'TR-user-data'.dialoguePortion == asn1_NOVALUE) ->
%% Dialogue portion included? (no) AC mode set? (yes)
abort;
% if dialogue portion is present and AppContext name is set -> decode dialogue and proceed
extract_dialogue_portion(UserData, _AppContextName) when is_record(UserData, 'TR-user-data') and
% ACTIVE: if dialogue portion is not present but App context name is set -> empty
extract_dialogue_portion(UserData, _AppContextName, active)
when not is_record(UserData, 'TR-user-data') or
(UserData#'TR-user-data'.dialoguePortion == undefined) or
(UserData#'TR-user-data'.dialoguePortion == asn1_NOVALUE) ->
%% Dialogue portion included? (no) AC mode set? (yes)
undefined;
% ANY: if dialogue portion is present and AppContext name is set -> decode dialogue and proceed
extract_dialogue_portion(UserData, _AppContextName, _Any) when is_record(UserData, 'TR-user-data') and
(UserData#'TR-user-data'.dialoguePortion /= undefined) and
(UserData#'TR-user-data'.dialoguePortion /= asn1_NOVALUE) ->
%% Extract dialogue portion

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