Add MAP codec PCAP based testing

You need to provide your own ./priv/map.pcap file to run the test.

Results from a real SIGTRAN link:
test/map_codec_tests.erl:49: PCAP: 191.795 s
test/map_codec_tests.erl:50: Parsed 807605 PCAP packets
master
Harald Welte 12 years ago
parent c60e8405a5
commit 49525f8af8
  1. 0
      priv/.empty
  2. 53
      test/map_codec_tests.erl

@ -5,14 +5,18 @@
-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").
-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',{syntax,{0,0,17,773,1,1,1}},asn1_NOVALUE,[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}}}}]}}).
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)).
% BER allows for different binary encodings of each message, the test below is not valid
%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,
@ -32,3 +36,48 @@ 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) ->
{ok, M2ua} = m2ua_codec:parse_m2ua_msg(DataBin),
handle_m2ua(M2ua).
handle_m2ua(#m2ua_msg{msg_class = ?M2UA_MSGC_MAUP,
msg_type = ?M2UA_MAUP_MSGT_DATA,
parameters = Params}) ->
{_Len, M2uaPayload} = proplists:get_value(16#300, Params),
Mtp3 = mtp3_codec:parse_mtp3_msg(M2uaPayload),
handle_mtp3(Mtp3);
handle_m2ua(M2ua = #m2ua_msg{}) ->
M2ua.
handle_mtp3(#mtp3_msg{service_ind = ?MTP3_SERV_SCCP,
payload = Payload}) ->
{ok, SccpDec} = sccp_codec:parse_sccp_msg(Payload),
SccpEnc = handle_sccp(SccpDec);
handle_mtp3(Mtp3 = #mtp3_msg{}) ->
Mtp3.
handle_sccp(S = #sccp_msg{msg_type = ?SCCP_MSGT_UDT, parameters = Params}) ->
UserData = proplists:get_value(user_data, Params),
MapDec = map_codec:parse_tcap_msg(UserData),
MapReEnc = map_codec:encode_tcap_msg(MapDec),
S;
handle_sccp(S = #sccp_msg{}) ->
S.

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