osmo_map/test/map_codec_tests.erl

126 lines
5.1 KiB
Erlang

-module(map_codec_tests).
-author('Harald Welte <laforge@gnumonks.org>').
-include_lib("eunit/include/eunit.hrl").
-include("map.hrl").
-include_lib("osmo_ss7/include/isup.hrl").
-include_lib("osmo_ss7/include/m2ua.hrl").
-include_lib("osmo_ss7/include/mtp3.hrl").
-include_lib("osmo_ss7/include/sccp.hrl").
% modified version of assertEqual()
-define(assertEqualArgs(Expect, Expr, Args),
((fun (__X) ->
case (Expr) of
__X -> ok;
__V -> ?debugFmt("Expected: ~w~nValue: ~w~n", [__X, __V]),
.erlang:error({assertEqual_failed,
[{module, ?MODULE},
{line, ?LINE},
{expression, (??Expr)},
{expected, __X},
{value, __V}] ++ Args})
end
end)(Expect))).
-define(_assertEqualArgs(Expect, Expr, Args), ?_test(?assertEqual(Expect, Expr, Args))).
-define(TCAP_MSG_BIN, <<100,65,73,4,81,1,2,200,107,42,40,40,6,7,0,17,134,5,1,1,1,160,29,97,27,128,2,7,128,161,9,6,7,4,0,0,1,0,1,3,162,3,2,1,0,163,5,161,3,2,1,0,108,13,163,11,2,1,64,2,1,8,48,3,10,1,0>>).
-define(TCAP_MSG_DEC, {'end',{'MapSpecificPDUs_end',[81,1,2,200],{'EXTERNAL',{0,0,17,773,1,1,1},asn1_NOVALUE,asn1_NOVALUE, {'single-ASN1-type', [97,27,128,2,7,128,161,9,6,7,4,0,0,1,0,1,3,162,3,2,1,0,163,5,161,3,2,1,0]}},[{basicROS,{returnError,{'MapSpecificPDUs_end_components_SEQOF_basicROS_returnError',{present,64},{local,8},{'RoamingNotAllowedParam',plmnRoamingNotAllowed,asn1_NOVALUE,asn1_NOVALUE}}}}]}}).
parse_test() ->
?assertEqual(?TCAP_MSG_DEC, map_codec:parse_tcap_msg(?TCAP_MSG_BIN)).
encode_test() ->
?assertEqual(?TCAP_MSG_BIN, map_codec:encode_tcap_msg(?TCAP_MSG_DEC)).
-define(ADDR_DEC, #party_number{nature_of_addr_ind = ?ISUP_ADDR_NAT_INTERNATIONAL,
internal_net_num = undefined,
number_incompl_ind = undefined,
numbering_plan = 0,
present_restrict = undefined,
screening_ind = undefined,
phone_number = [1,2,3,4,5,6,7,8,9,0]}).
-define(ADDR_LIST, [144,33,67,101,135,9]).
encode_addr_list_test() ->
?assertEqual(?ADDR_LIST, map_codec:encode_addr_string(?ADDR_DEC)).
encode_addr_int_test() ->
AddrDec = ?ADDR_DEC,
?assertEqual(?ADDR_LIST, map_codec:encode_addr_string(AddrDec#party_number{phone_number=1234567890})).
decode_addr_list_test() ->
?assertEqual(?ADDR_DEC, map_codec:parse_addr_string(?ADDR_LIST)).
decode_addr_bin_test() ->
?assertEqual(?ADDR_DEC, map_codec:parse_addr_string(list_to_binary(?ADDR_LIST))).
pcap_parse_test_() ->
{ timeout, 5*60, [ fun pcap_parse_t/0 ] }.
% parser test for real-world MAP/TCAP data
pcap_parse_t() ->
Args = [{rewrite_fn, fun pcap_cb/5}],
File = "../priv/map.pcap",
case file:read_file_info(File) of
{ok, _Info} ->
{ok, NrPkts} = ?debugTime("PCAP", osmo_ss7_pcap:pcap_apply(File, "", Args)),
?debugFmt("Parsed ~p PCAP packets~n", [NrPkts]);
{error, _Reason} ->
?debugFmt("Skipping PCAP based tests as no ~p could be found~n",
[File])
end.
pcap_cb(sctp, _From, Path, 2, DataBin) ->
M2ua = m2ua_codec:parse_m2ua_msg(DataBin),
M2uaReenc = m2ua_codec:encode_m2ua_msg(M2ua),
?assertEqualArgs(DataBin, M2uaReenc, [{layer, m2ua}, {path, Path}]),
handle_m2ua(M2ua, Path),
DataBin.
handle_m2ua(M2ua = #m2ua_msg{msg_class = ?M2UA_MSGC_MAUP,
msg_type = ?M2UA_MAUP_MSGT_DATA,
parameters = Params}, Path) ->
{_Len, M2uaPayload} = proplists:get_value(16#300, Params),
Mtp3 = mtp3_codec:parse_mtp3_msg(M2uaPayload),
Mtp3Reenc = mtp3_codec:encode_mtp3_msg(Mtp3),
?assertEqualArgs(M2uaPayload, Mtp3Reenc, [{layer, mtp3}, {path, Path}]),
handle_mtp3(Mtp3, Path ++ [M2ua]);
handle_m2ua(M2ua = #m2ua_msg{}, _Path) ->
M2ua.
handle_mtp3(Mtp3 = #mtp3_msg{service_ind = ?MTP3_SERV_SCCP,
payload = Payload}, Path) ->
{ok, SccpDec} = sccp_codec:parse_sccp_msg(Payload),
SccpReenc = sccp_codec:encode_sccp_msg(SccpDec),
% We cannot assume that the data is equal due to SCCP allowing
% different encodings of the same data. instead we re-decode
{ok, SccpReencDec} = sccp_codec:parse_sccp_msg(SccpReenc),
?assertEqualArgs(SccpDec, SccpReencDec, [{layer, sccp}, {path, Path}]),
handle_sccp(SccpDec, Path ++ [Mtp3]);
handle_mtp3(Mtp3 = #mtp3_msg{}, _Path) ->
Mtp3.
handle_sccp(S = #sccp_msg{msg_type = ?SCCP_MSGT_UDT, parameters = Params}, Path) ->
UserData = proplists:get_value(user_data, Params),
PathOut = Path ++ [S],
case map_codec:parse_tcap_msg(UserData) of
{error, Error} ->
ErrTuple = {Error, erlang:get_stacktrace(), []},
?debugFmt("Path: ~p~nMAP Decode Error: ~w~n", [PathOut, ErrTuple]),
erlang:error(ErrTuple);
MapDec ->
%?debugFmt("~w~n", [MapDec]),
case map_codec:encode_tcap_msg(MapDec) of
{error, Error} ->
ErrTuple = {Error, erlang:get_stacktrace(), [{map_dec, MapDec}]},
?debugFmt("Path: ~p~nMAP Encode Error: ~w~n", [PathOut, ErrTuple]),
erlang:error(ErrTuple);
MapReenc ->
%?assertEqualArgs(UserData, MapReenc, [{layer, map}, {path, Path}]),
MapReencDec = map_codec:parse_tcap_msg(MapReenc),
?assertEqualArgs(MapDec, MapReencDec, [{layer, map}, {path, Path}])
end
end,
S;
handle_sccp(S = #sccp_msg{}, _Path) ->
S.