forked from erlang/signerl
TCO: make sure transaciton IDs are always converted from binary to int
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@ -179,6 +179,7 @@ behaviour_info(Other) ->
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gen_server:behaviour_info(Other).
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-include("TCAPMessages.hrl").
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%-include("TR.hrl").
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-include("tcap.hrl").
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-include("sccp.hrl").
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@ -268,87 +269,83 @@ handle_call(Request, From, State) ->
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% reference: Figure A.3/Q.774 (sheet 1 of 4)
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handle_cast({'N', 'UNITDATA', indication, UdataParams}, State)
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when is_record(UdataParams, 'N-UNITDATA') ->
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DecRes = 'TR':decode('TCMessage', UdataParams#'N-UNITDATA'.userData),
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io:format("Decoded TCMessage: ~p~n", [DecRes]),
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case DecRes of
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{ok, {unidirectional, TPDU}} ->
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case 'TR':decode('Unidirectional', TPDU) of
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{ok, Unidirectional} ->
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% Create a Dialogue Handler (DHA)
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DialogueID = new_tid(),
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StartFunc = get_start(dialogue, DialogueID, State),
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ChildSpec = {DialogueID, StartFunc, temporary, 4000, worker, [tcap_dha_fsm]},
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{ok, DHA} = supervisor:start_child(State#state.supervisor, ChildSpec),
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% TR-UNI indication CSL <- TSL
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UserData = #'TR-user-data'{dialoguePortion = Unidirectional#'Unidirectional'.dialoguePortion,
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componentPortion = Unidirectional#'Unidirectional'.components},
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TrParams = #'TR-UNI'{qos =
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destAddress = UdataParams#'N-UNITDATA'.calledAddress,
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origAddress = UdataParams#'N-UNITDATA'.callingAddress,
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userData = UserData},
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gen_fsm:send_event(DHA, {'TR', 'UNI', indication, TrParams}),
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{noreply, State};
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{error, Reason} ->
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% Discard received message
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% reference: Figure A.3/Q/774 (sheet 4 of 4) label (3)
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error_logger:error_report(["Syntax error in received N-UNI", {error, Reason},
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{ok, {Tag, ActRes}} = 'TR':decode('TCMessage', UdataParams#'N-UNITDATA'.userData),
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PpRes = {Tag, postproc_tcmessage(ActRes)},
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io:format("Decoded TCMessage: ~p~n", [PpRes]),
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case PpRes of
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{unidirectional, Unidirectional = #'Unidirectional'{}} ->
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% Create a Dialogue Handler (DHA)
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DialogueID = new_tid(),
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StartFunc = get_start(dialogue, DialogueID, State),
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ChildSpec = {DialogueID, StartFunc, temporary, 4000, worker, [tcap_dha_fsm]},
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{ok, DHA} = supervisor:start_child(State#state.supervisor, ChildSpec),
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% TR-UNI indication CSL <- TSL
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UserData = #'TR-user-data'{dialoguePortion = Unidirectional#'Unidirectional'.dialoguePortion,
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componentPortion = Unidirectional#'Unidirectional'.components},
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TrParams = #'TR-UNI'{qos =
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destAddress = UdataParams#'N-UNITDATA'.calledAddress,
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origAddress = UdataParams#'N-UNITDATA'.callingAddress,
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userData = UserData},
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gen_fsm:send_event(DHA, {'TR', 'UNI', indication, TrParams}),
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{noreply, State};
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% {error, Reason} ->
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% % Discard received message
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% % reference: Figure A.3/Q/774 (sheet 4 of 4) label (3)
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% error_logger:error_report(["Syntax error in received N-UNI", {error, Reason},
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% {caller, UdataParams#'N-UNITDATA'.callingAddress},
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% {called, UdataParams#'N-UNITDATA'.calledAddress}]),
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% {noreply, State}
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% end;
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{'begin', TPDU = #'Begin'{}} ->
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% Assign local transaction ID
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TransactionID = new_tid(),
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StartFunc = get_start(in_transaction, TransactionID, State),
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ChildSpec = {TransactionID, StartFunc, temporary, infinity, supervisor, [tcap_tsm_fsm]},
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% Is TID = no TID?
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% Note: The assignment of the ID above just gets the next available
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% value and doesn't ensure that it is not in use (unlikely)
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% or that there are enough resources available. The real
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% test is in whether the start succeeds.
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case supervisor:start_child(State#state.supervisor, ChildSpec) of
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% FIXME: the entire mobile-termianted
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% transaction handling needs to reflect tcap_transaction_sup
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{ok, TSM} ->
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% Created a Transaction State Machine (TSM)
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TsmParams = UdataParams#'N-UNITDATA'{userData = TPDU},
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% BEGIN received TSM <- TCO
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gen_fsm:send_event(TSM, {'BEGIN', received, TsmParams});
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_Other ->
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% TID = no TID
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% Build ABORT message (P-Abort Cause = Resource Limitation)
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Abort = {abort, #'Abort'{dtid = TPDU#'Begin'.otid,
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reason = {'p-abortCause', resourceLimitation}}},
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NewTPDU = list_to_binary('TCMessage':encode('TCMessage', Abort)),
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SccpParams = #'N-UNITDATA'{calledAddress = UdataParams#'N-UNITDATA'.callingAddress,
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callingAddress = UdataParams#'N-UNITDATA'.calledAddress,
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sequenceControl = false, returnOption = false, importance = none,
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userData = NewTPDU},
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% TR-UNI request TSL -> SCCP
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Module = State#state.module,
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Module:send_primitive({'N', 'UNITDATA', request, SccpParams}, State#state.ext_state),
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error_logger:error_report(["Unable to create TSM for received N-BEGIN",
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{caller, UdataParams#'N-UNITDATA'.callingAddress},
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{called, UdataParams#'N-UNITDATA'.calledAddress}]),
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{noreply, State}
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end;
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{ok, {'begin', TPDU}} ->
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case 'TR':decode('Begin', TPDU) of
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{ok, Begin} ->
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% Assign local transaction ID
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TransactionID = new_tid(),
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StartFunc = get_start(in_transaction, TransactionID, State),
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ChildSpec = {TransactionID, StartFunc, temporary, infinity, supervisor, [tcap_tsm_fsm]},
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% Is TID = no TID?
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% Note: The assignment of the ID above just gets the next available
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% value and doesn't ensure that it is not in use (unlikely)
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% or that there are enough resources available. The real
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% test is in whether the start succeeds.
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case supervisor:start_child(State#state.supervisor, ChildSpec) of
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% FIXME: the entire mobile-termianted
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% transaction handling needs to reflect tcap_transaction_sup
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{ok, TSM} ->
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% Created a Transaction State Machine (TSM)
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TsmParams = UdataParams#'N-UNITDATA'{userData = Begin},
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% BEGIN received TSM <- TCO
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gen_fsm:send_event(TSM, {'BEGIN', received, TsmParams});
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_Other ->
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% TID = no TID
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% Build ABORT message (P-Abort Cause = Resource Limitation)
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Abort = {abort, #'Abort'{dtid = TPDU#'Begin'.otid,
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reason = {'p-abortCause', resourceLimitation}}},
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NewTPDU = list_to_binary('TCMessage':encode('TCMessage', Abort)),
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SccpParams = #'N-UNITDATA'{calledAddress = UdataParams#'N-UNITDATA'.callingAddress,
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callingAddress = UdataParams#'N-UNITDATA'.calledAddress,
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sequenceControl = false, returnOption = false, importance = none,
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userData = NewTPDU},
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% TR-UNI request TSL -> SCCP
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Module = State#state.module,
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Module:send_primitive({'N', 'UNITDATA', request, SccpParams}, State#state.ext_state),
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error_logger:error_report(["Unable to create TSM for received N-BEGIN",
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{caller, UdataParams#'N-UNITDATA'.callingAddress},
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{called, UdataParams#'N-UNITDATA'.calledAddress}])
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end,
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{noreply, State};
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{error, Reason} ->
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{called, UdataParams#'N-UNITDATA'.calledAddress}])
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end,
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{noreply, State};
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% {error, Reason} ->
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% TODO
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% is OTID derivable?
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% Build ABORT message with appropraite P-Abort Cause value
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% N-UNITDATA request TSL -> SCCP
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% Discard received message
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% reference: Figure A.3/Q/774 (sheet 4 of 4) label (4)
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error_logger:error_report(["Syntax error in received N-BEGIN", {error, Reason},
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{caller, UdataParams#'N-UNITDATA'.callingAddress},
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{called, UdataParams#'N-UNITDATA'.calledAddress}]),
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{noreply, State}
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end;
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{ok, {continue, TPDU = #'Continue'{dtid = Dtid}}} ->
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% % is OTID derivable?
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% % Build ABORT message with appropraite P-Abort Cause value
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% % N-UNITDATA request TSL -> SCCP
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% % Discard received message
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% % reference: Figure A.3/Q/774 (sheet 4 of 4) label (4)
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% error_logger:error_report(["Syntax error in received N-BEGIN", {error, Reason},
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% {caller, UdataParams#'N-UNITDATA'.callingAddress},
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% {called, UdataParams#'N-UNITDATA'.calledAddress}]),
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% {noreply, State}
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{continue, TPDU = #'Continue'{dtid = Dtid}} ->
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% DTID assigned?
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case ets:lookup_element(tcap_transaction, decode_tid(Dtid), 2) of
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case ets:lookup_element(tcap_transaction, Dtid, 2) of
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{error, _Reason} ->
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error_logger:error_report(["DTID not found in received N-CONTINUE",
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{dtid, Dtid},
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@ -380,9 +377,9 @@ handle_cast({'N', 'UNITDATA', indication, UdataParams}, State)
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% {called, UdataParams#'N-UNITDATA'.calledAddress}]),
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% {noreply, State}
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% end;
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{ok, {'end', TPDU = #'End'{dtid = Dtid}}} ->
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{'end', TPDU = #'End'{dtid = Dtid}} ->
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% DTID assigned?
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case ets:lookup_element(tcap_transaction, decode_tid(Dtid), 2) of
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case ets:lookup_element(tcap_transaction, Dtid, 2) of
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{error, _Reason} ->
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error_logger:error_report(["DTID not found in received N-END",
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{dtid, Dtid},
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@ -408,37 +405,35 @@ handle_cast({'N', 'UNITDATA', indication, UdataParams}, State)
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% {called, UdataParams#'N-UNITDATA'.calledAddress}]),
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% {noreply, State}
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% end;
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{ok, {abort, TPDU}} ->
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case 'TR':decode('Abort', TPDU) of
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{ok, Abort} ->
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% DTID assigned?
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case catch ets:lookup(tcap_transaction, TPDU#'Abort'.dtid, 2) of
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{error, _Reason} ->
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error_logger:error_report(["DTID not found in received N-ABORT",
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{dtid, TPDU#'Abort'.dtid},
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{caller, UdataParams#'N-UNITDATA'.callingAddress},
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{called, UdataParams#'N-UNITDATA'.calledAddress}]),
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% Discard received message
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% reference: Figure A.3/Q/774 (sheet 4 of 4) label (3)
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{noreply, State};
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TSM ->
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TsmParams = UdataParams#'N-UNITDATA'{userData = Abort},
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% Abort received TSM <- TCO
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gen_fsm:send_event(TSM, {'ABORT', received, TsmParams}),
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{noreply, State}
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end;
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{error, Reason} ->
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% TODO
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% DTID assigned?
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% Local Abort TSM <- TCO
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% Discard received message
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% reference: Figure A.3/Q/774 (sheet 4 of 4) label (5)
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error_logger:error_report(["Syntax error in received N-ABORT", {error, Reason},
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{abort, TPDU = #'Abort'{}} ->
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% DTID assigned?
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case catch ets:lookup(tcap_transaction, TPDU#'Abort'.dtid, 2) of
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{error, _Reason} ->
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error_logger:error_report(["DTID not found in received N-ABORT",
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{dtid, TPDU#'Abort'.dtid},
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{caller, UdataParams#'N-UNITDATA'.callingAddress},
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{called, UdataParams#'N-UNITDATA'.calledAddress}]),
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% Discard received message
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% reference: Figure A.3/Q/774 (sheet 4 of 4) label (3)
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{noreply, State};
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TSM ->
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TsmParams = UdataParams#'N-UNITDATA'{userData = TPDU},
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% Abort received TSM <- TCO
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gen_fsm:send_event(TSM, {'ABORT', received, TsmParams}),
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{noreply, State}
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end;
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{ok, {error, Reason}} ->
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% {error, Reason} ->
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% TODO
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% % DTID assigned?
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% % Local Abort TSM <- TCO
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% % Discard received message
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% % reference: Figure A.3/Q/774 (sheet 4 of 4) label (5)
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% error_logger:error_report(["Syntax error in received N-ABORT", {error, Reason},
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% {caller, UdataParams#'N-UNITDATA'.callingAddress},
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% {called, UdataParams#'N-UNITDATA'.calledAddress}]),
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% {noreply, State}
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% end;
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{error, Reason} ->
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% TODO
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% Message type unknown
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% OTID derivable?
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@ -739,3 +734,11 @@ decode_tid(Bin) when is_binary(Bin) ->
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binary:decode_unsigned(Bin);
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decode_tid(List) when is_list(List) ->
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decode_tid(list_to_binary(List)).
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postproc_tcmessage(C=#'Continue'{otid = Otid, dtid = Dtid}) ->
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C#'Continue'{otid = decode_tid(Otid), dtid = decode_tid(Dtid)};
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postproc_tcmessage(E=#'End'{dtid = Dtid}) ->
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E#'End'{dtid = decode_tid(Dtid)};
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postproc_tcmessage(B=#'Begin'{otid = Otid}) ->
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B#'Begin'{otid = decode_tid(Otid)}.
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