introcue new MAP translation code

master
Harald Welte 12 years ago
parent 0aa140b166
commit 6ef56d0a73
  1. 290
      src/map_masq.erl

@ -0,0 +1,290 @@
% MAP masquerading application
% (C) 2010-2011 by Harald Welte <laforge@gnumonks.org>
% (C) 2010-2011 by On-Waves
%
% All Rights Reserved
%
% This program is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 2 of the License, or
% (at your option) any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License along
% with this program; if not, write to the Free Software Foundation, Inc.,
% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-module(map_masq).
-author('Harald Welte <laforge@gnumonks.org>').
%-compile(export_all).
-export([mangle_map/1]).
-define(PATCH_HLR_NUMBER, [1]).
-define(PATCH_SGSN_NUMBER, [2]).
-define(PATCH_SGSN_ADDRESS, [3]).
-define(PATCH_VMSC_ADDRESS, [4]).
-define(PATCH_GSMSCF_ADDRESS, [5]).
-include_lib("osmo_map/include/map.hrl").
mangle_msisdn(from_stp, _Opcode, AddrIn) ->
{ok, IntPfx} = application:get_env(intern_pfx),
mgw_nat:isup_party_internationalize(AddrIn, IntPfx).
patch(#'SendRoutingInfoArg'{msisdn = Msisdn} = P) ->
AddrInDec = map_codec:parse_addr_string(Msisdn),
io:format("MSISDN IN = ~p~n", [AddrInDec]),
AddrOutDec = mangle_msisdn(from_stp, 22, AddrInDec),
io:format("MSISDN OUT = ~p~n", [AddrOutDec]),
AddrOutBin = map_codec:encode_addr_string(AddrOutDec),
P#'SendRoutingInfoArg'{msisdn = AddrOutBin};
% patch a UpdateGprsLocationArg and replace SGSN number and SGSN address
% !!! TESTING ONLY !!!
patch(#'UpdateGprsLocationArg'{} = P) ->
P#'UpdateGprsLocationArg'{'sgsn-Number'= ?PATCH_SGSN_NUMBER,
'sgsn-Address' = ?PATCH_SGSN_ADDRESS};
% Some other SGSN is sendingu us a GPRS location update. In the response,
% we indicate teh HLR number, which we need to masquerade
patch(#'UpdateGprsLocationRes'{} = P) ->
P#'UpdateGprsLocationRes'{'hlr-Number' = ?PATCH_HLR_NUMBER};
% Some other MSC/VLR is sendingu us a GSM location update. In the response,
% we indicate teh HLR number, which we need to masquerade
patch(#'UpdateLocationRes'{} = P) ->
P#'UpdateLocationRes'{'hlr-Number' = ?PATCH_HLR_NUMBER};
% HLR responds to VLR's MAP_RESTORE_REQ (i.e. it has lost information)
patch(#'RestoreDataRes'{} = P) ->
P#'RestoreDataRes'{'hlr-Number' = ?PATCH_HLR_NUMBER};
% HLR sends subscriber data to VLR/SGSN, including CAMEL info
patch(#'InsertSubscriberDataArg'{'vlrCamelSubscriptionInfo'=VlrCamel,
'sgsn-CAMEL-SubscriptionInfo'=SgsnCamel} = Arg) ->
Arg#'InsertSubscriberDataArg'{'vlrCamelSubscriptionInfo'=patch(VlrCamel),
'sgsn-CAMEL-SubscriptionInfo'=patch(SgsnCamel)};
% HLR sends subscriber data to gsmSCF
patch(#'AnyTimeSubscriptionInterrogationRes'{'camel-SubscriptionInfo'=Csi} = P) ->
P#'AnyTimeSubscriptionInterrogationRes'{'camel-SubscriptionInfo'=patch(Csi)};
patch(asn1_NOVALUE) ->
asn1_NOVALUE;
% CAMEL related parsing
% this is part of the InsertSubscriberData HLR -> VLR
patch(#'VlrCamelSubscriptionInfo'{'o-CSI'=Ocsi, 'mo-sms-CSI'=MoSmsCsi,
'mt-sms-CSI'=MtSmsCsi, 'ss-CSI'=SsCsi} = P) ->
P#'VlrCamelSubscriptionInfo'{'o-CSI'=patch(Ocsi),
'mo-sms-CSI'=patch(MoSmsCsi),
'mt-sms-CSI'=patch(MtSmsCsi),
'ss-CSI'=patch(SsCsi)};
% this is part of the InsertSubscriberData HLR -> SGSN
patch(#'SGSN-CAMEL-SubscriptionInfo'{'gprs-CSI'=GprsCsi,
'mo-sms-CSI'=MoSmsCsi,
'mt-sms-CSI'=MtSmsCsi} = P) ->
P#'SGSN-CAMEL-SubscriptionInfo'{'gprs-CSI'=patch(GprsCsi),
'mo-sms-CSI'=patch(MoSmsCsi),
'mt-sms-CSI'=patch(MtSmsCsi)};
% this is part of the Anytime Subscription Interrogation Result HLR->gsmSCF
patch(#'CAMEL-SubscriptionInfo'{'o-CSI'=Ocsi,
'd-CSI'=Dcsi,
't-CSI'=Tcsi,
'vt-CSI'=Vtcsi,
%'tif-CSI'=Tifcsi,
'gprs-CSI'=GprsCsi,
'mo-sms-CSI'=MoSmsCsi,
'ss-CSI'=SsCsi,
'm-CSI'=Mcsi,
'mt-sms-CSI'=MtSmsCsi,
'mg-csi'=MgCsi,
'o-IM-CSI'=OimCsi,
'd-IM-CSI'=DimCsi,
'vt-IM-CSI'=VtImCsi} = P) ->
P#'CAMEL-SubscriptionInfo'{'o-CSI'=patch(Ocsi),
'd-CSI'=patch(Dcsi),
't-CSI'=patch(Tcsi),
'vt-CSI'=patch(Vtcsi),
'gprs-CSI'=patch(GprsCsi),
'mo-sms-CSI'=patch(MoSmsCsi),
'ss-CSI'=patch(SsCsi),
'm-CSI'=patch(Mcsi),
'mt-sms-CSI'=patch(MtSmsCsi),
'mg-csi'=patch(MgCsi),
'o-IM-CSI'=patch(OimCsi),
'd-IM-CSI'=patch(DimCsi),
'vt-IM-CSI'=patch(VtImCsi)};
patch(#'T-CSI'{'t-BcsmCamelTDPDataList'=TdpList} = P) ->
P#'T-CSI'{'t-BcsmCamelTDPDataList'=patch_tBcsmCamelTDPDataList(TdpList)};
patch(#'M-CSI'{'gsmSCF-Address'=GsmScfAddr} = P) ->
P#'M-CSI'{'gsmSCF-Address'=?PATCH_GSMSCF_ADDRESS};
patch(#'MG-CSI'{'gsmSCF-Address'=GsmScfAddr} = P) ->
P#'MG-CSI'{'gsmSCF-Address'=?PATCH_GSMSCF_ADDRESS};
patch(#'O-CSI'{'o-BcsmCamelTDPDataList'=TdpList} = P) ->
P#'O-CSI'{'o-BcsmCamelTDPDataList'=patch_oBcsmCamelTDPDataList(TdpList)};
patch(#'D-CSI'{'dp-AnalysedInfoCriteriaList'=List} = P) ->
P#'D-CSI'{'dp-AnalysedInfoCriteriaList'=patch_AnInfoCritList(List)};
patch(#'SMS-CSI'{'sms-CAMEL-TDP-DataList'=TdpList} = P) ->
P#'SMS-CSI'{'sms-CAMEL-TDP-DataList'=patch_SmsCamelTDPDataList(TdpList)};
patch(#'SS-CSI'{'ss-CamelData'=Sscd} = P) ->
P#'SS-CSI'{'ss-CamelData'=patch(Sscd)};
patch(#'GPRS-CSI'{'gprs-CamelTDPDataList'=TdpList} = P) ->
P#'GPRS-CSI'{'gprs-CamelTDPDataList'=patch_GprsCamelTDPDataList(TdpList)};
patch(#'SS-CamelData'{'gsmSCF-Address'=GsmScfAddr} = P) ->
P#'SS-CamelData'{'gsmSCF-Address'=?PATCH_GSMSCF_ADDRESS};
patch(#'O-BcsmCamelTDPData'{'gsmSCF-Address'=GsmScfAddr} = P) ->
P#'O-BcsmCamelTDPData'{'gsmSCF-Address'=?PATCH_GSMSCF_ADDRESS};
patch(#'SMS-CAMEL-TDP-Data'{'gsmSCF-Address'=GsmScfAddr} = P) ->
P#'SMS-CAMEL-TDP-Data'{'gsmSCF-Address'=?PATCH_GSMSCF_ADDRESS};
patch(#'GPRS-CamelTDPData'{'gsmSCF-Address'=GsmScfAddr} = P) ->
P#'GPRS-CamelTDPData'{'gsmSCF-Address'=?PATCH_GSMSCF_ADDRESS};
patch(#'DP-AnalysedInfoCriterium'{'gsmSCF-Address'=GsmScfAddr} = P) ->
P#'DP-AnalysedInfoCriterium'{'gsmSCF-Address'=?PATCH_GSMSCF_ADDRESS}.
patch_oBcsmCamelTDPDataList(List) ->
% we reverse the origianl list, as the tail recursive _acc function
% will invert the order of components again
patch_oBcsmCamelTDPDataList_acc(lists:reverse(List), []).
patch_oBcsmCamelTDPDataList_acc([], NewList) -> NewList;
patch_oBcsmCamelTDPDataList_acc([TdpData|Tail], NewList) ->
NewTdpData = patch(TdpData#'O-BcsmCamelTDPData'{}),
patch_oBcsmCamelTDPDataList_acc(Tail, [NewTdpData|NewList]).
patch_tBcsmCamelTDPDataList(List) ->
% we reverse the origianl list, as the tail recursive _acc function
% will invert the order of components again
patch_tBcsmCamelTDPDataList_acc(lists:reverse(List), []).
patch_tBcsmCamelTDPDataList_acc([], NewList) -> NewList;
patch_tBcsmCamelTDPDataList_acc([TdpData|Tail], NewList) ->
NewTdpData = patch(TdpData#'T-BcsmCamelTDPData'{}),
patch_tBcsmCamelTDPDataList_acc(Tail, [NewTdpData|NewList]).
patch_AnInfoCritList(List) ->
% we reverse the origianl list, as the tail recursive _acc function
% will invert the order of components again
patch_AnInfoCritList_acc(lists:reverse(List), []).
patch_AnInfoCritList_acc([], NewList) -> NewList;
patch_AnInfoCritList_acc([Crit|Tail], NewList) ->
NewCrit = patch(Crit#'DP-AnalysedInfoCriterium'{}),
patch_AnInfoCritList_acc(Tail, [NewCrit|NewList]).
patch_GprsCamelTDPDataList(List) ->
% we reverse the origianl list, as the tail recursive _acc function
% will invert the order of components again
patch_GprsCamelTDPDataList_acc(lists:reverse(List), []).
patch_GprsCamelTDPDataList_acc([], NewList) -> NewList;
patch_GprsCamelTDPDataList_acc([TdpData|Tail], NewList) ->
NewTdpData = patch(TdpData#'GPRS-CamelTDPData'{}),
patch_GprsCamelTDPDataList_acc(Tail, [NewTdpData|NewList]).
patch_SmsCamelTDPDataList(List) ->
% we reverse the origianl list, as the tail recursive _acc function
% will invert the order of components again
patch_SmsCamelTDPDataList_acc(lists:reverse(List), []).
patch_SmsCamelTDPDataList_acc([], NewList) -> NewList;
patch_SmsCamelTDPDataList_acc([TdpData|Tail], NewList) ->
NewTdpData = patch(TdpData#'SMS-CAMEL-TDP-Data'{}),
patch_GprsCamelTDPDataList_acc(Tail, [NewTdpData|NewList]).
% process the Argument of a particular MAP invocation
process_component_arg(OpCode, Arg) ->
case Arg of
asn1_NOVALUE -> Arg;
_ -> patch(Arg)
end.
% recurse over all components
handle_tcap_components(List) ->
% we reverse the origianl list, as the tail recursive _acc function
% will invert the order of components again
handle_tcap_components_acc(lists:reverse(List), []).
handle_tcap_components_acc([], NewComponents) -> NewComponents;
handle_tcap_components_acc([Component|Tail], NewComponents) ->
case Component of
{basicROS, {Primitive, Body}} ->
io:format("handle component ~p primitive ~n", [Component]),
case Body of
% BEGIN
#'MapSpecificPDUs_begin_components_SEQOF_basicROS_invoke'{opcode={local, OpCode},
argument=Arg} ->
NewArg = process_component_arg(OpCode, Arg),
NewBody = Body#'MapSpecificPDUs_begin_components_SEQOF_basicROS_invoke'{argument=NewArg};
#'MapSpecificPDUs_begin_components_SEQOF_basicROS_returnResult'{result=#'MapSpecificPDUs_begin_components_SEQOF_basicROS_returnResult_result'{opcode={local, OpCode}, result=Arg}} ->
NewArg = process_component_arg(OpCode, Arg),
NewBody = Body#'MapSpecificPDUs_begin_components_SEQOF_basicROS_returnResult'{result=#'MapSpecificPDUs_begin_components_SEQOF_basicROS_returnResult_result'{result=NewArg}};
#'MapSpecificPDUs_begin_components_SEQOF_returnResultNotLast'{result=#'MapSpecificPDUs_begin_components_SEQOF_returnResultNotLast_result'{opcode={local, OpCode}, result=Arg}} ->
NewArg = process_component_arg(OpCode, Arg),
NewBody = Body#'MapSpecificPDUs_begin_components_SEQOF_returnResultNotLast'{result=#'MapSpecificPDUs_begin_components_SEQOF_returnResultNotLast_result'{result=NewArg}};
% END
#'MapSpecificPDUs_end_components_SEQOF_basicROS_invoke'{opcode={local, OpCode},
argument=Arg} ->
NewArg = process_component_arg(OpCode, Arg),
NewBody = Body#'MapSpecificPDUs_end_components_SEQOF_basicROS_invoke'{argument=NewArg};
#'MapSpecificPDUs_end_components_SEQOF_basicROS_returnResult'{result=#'MapSpecificPDUs_end_components_SEQOF_basicROS_returnResult_result'{opcode={local, OpCode}, result=Arg}} ->
NewArg = process_component_arg(OpCode, Arg),
NewBody = Body#'MapSpecificPDUs_end_components_SEQOF_basicROS_returnResult'{result=#'MapSpecificPDUs_end_components_SEQOF_basicROS_returnResult_result'{result=NewArg}};
#'MapSpecificPDUs_end_components_SEQOF_returnResultNotLast'{result=#'MapSpecificPDUs_end_components_SEQOF_returnResultNotLast_result'{opcode={local, OpCode}, result=Arg}} ->
NewArg = process_component_arg(OpCode, Arg),
NewBody = Body#'MapSpecificPDUs_end_components_SEQOF_returnResultNotLast'{result=#'MapSpecificPDUs_end_components_SEQOF_returnResultNotLast_result'{result=NewArg}};
% CONTINUE
#'MapSpecificPDUs_continue_components_SEQOF_basicROS_invoke'{opcode={local, OpCode},
argument=Arg} ->
NewArg = process_component_arg(OpCode, Arg),
NewBody = Body#'MapSpecificPDUs_continue_components_SEQOF_basicROS_invoke'{argument=NewArg};
#'MapSpecificPDUs_continue_components_SEQOF_basicROS_returnResult'{result=#'MapSpecificPDUs_continue_components_SEQOF_basicROS_returnResult_result'{opcode={local, OpCode}, result=Arg}} ->
NewArg = process_component_arg(OpCode, Arg),
NewBody = Body#'MapSpecificPDUs_end_components_SEQOF_basicROS_returnResult'{result=#'MapSpecificPDUs_end_components_SEQOF_basicROS_returnResult_result'{result=NewArg}};
#'MapSpecificPDUs_continue_components_SEQOF_returnResultNotLast'{result=#'MapSpecificPDUs_continue_components_SEQOF_returnResultNotLast_result'{opcode={local, OpCode}, result=Arg}} ->
NewArg = process_component_arg(OpCode, Arg),
NewBody = Body#'MapSpecificPDUs_continue_components_SEQOF_returnResultNotLast'{result=#'MapSpecificPDUs_continue_components_SEQOF_returnResultNotLast_result'{result=NewArg}};
_ ->
NewBody = Body
end,
%NewBody = setelement(5, Body, NewArg)
NewComponent = {basicROS, {Primitive, NewBody}};
_ ->
NewComponent = Component
end,
io:format("=> modified component ~p~n", [NewComponent]),
handle_tcap_components_acc(Tail, [NewComponent|NewComponents]).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Actual mangling of the decoded MAP messages
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
mangle_map({Type, TcapMsgDec}) ->
case {Type, TcapMsgDec} of
{'unidirectional', #'MapSpecificPDUs_unidirectional'{dialoguePortion=Dialg,
components=Components}} ->
NewComponents = handle_tcap_components(Components),
NewTcapMsgDec = TcapMsgDec#'MapSpecificPDUs_unidirectional'{components=NewComponents};
{'begin', #'MapSpecificPDUs_begin'{components=Components}} ->
NewComponents = handle_tcap_components(Components),
NewTcapMsgDec = TcapMsgDec#'MapSpecificPDUs_begin'{components=NewComponents};
{'continue', #'MapSpecificPDUs_continue'{dialoguePortion=Dialg, components=Components}} ->
NewComponents = handle_tcap_components(Components),
NewTcapMsgDec = TcapMsgDec#'MapSpecificPDUs_continue'{components=NewComponents};
{'end', #'MapSpecificPDUs_end'{components=Components}} ->
NewComponents = handle_tcap_components(Components),
NewTcapMsgDec = TcapMsgDec#'MapSpecificPDUs_end'{components=NewComponents};
_ ->
NewTcapMsgDec = TcapMsgDec
end,
io:format("new TcapMsgDec ~p~n", [NewTcapMsgDec]),
{Type, NewTcapMsgDec}.
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