re-structure SS7 code and MGW NAT code into separate modules
This repository now only contains the SS7 code
diff --git a/src/bssmap_codec.erl b/src/bssmap_codec.erl
new file mode 100644
index 0000000..61cf85e
--- /dev/null
+++ b/src/bssmap_codec.erl
@@ -0,0 +1,197 @@
+% GSM TS 08.08 / 3GPP TS 48.008 BSSMAP
+
+% (C) 2010 by Harald Welte <laforge@gnumonks.org>
+%
+% All Rights Reserved
+%
+% This program is free software; you can redistribute it and/or modify
+% it under the terms of the GNU Affero General Public License as
+% published by the Free Software Foundation; either version 3 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 Affero General Public License
+% along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+-module(bssmap_codec).
+-author('Harald Welte <laforge@gnumonks.org>').
+-include("bssmap.hrl").
+
+-export([parse_bssmap_msg/1, encode_bssmap_msg/1]).
+
+parse_bssmap_msg(<<MsgType:8, Remain/binary>>) ->
+ parse_bssmap_msgt(MsgType, Remain).
+
+parse_bssmap_msgt(MsgType, Msg) when is_integer(MsgType), is_binary(Msg) ->
+ IeList = parse_ies(Msg, []),
+ {bssmap_msg, MsgType, IeList}.
+
+parse_ies(<<>>, ParsedIeList) ->
+ ParsedIeList;
+parse_ies(Msg, ParsedIeList) when is_binary(Msg) ->
+ CurIe = binary:first(Msg),
+ % Parse current IE and append it to list of Parsed IEs
+ case is_tv_ie(CurIe) of
+ true ->
+ Res = parse_ie_tv(CurIe, Msg);
+ false ->
+ Res = parse_ie(CurIe, Msg)
+ end,
+ {ok, BytesConsumed, ParsedIe} = Res,
+ {CurIe, Payload} = ParsedIe,
+ DecodedIe = decode_ie(CurIe, Payload),
+ ParsedIeList1 = ParsedIeList ++ [DecodedIe],
+ %ParsedIeList1 = ParsedIeList ++ [ParsedIe],
+ RemainMsg = binary:part(Msg, BytesConsumed, byte_size(Msg)-BytesConsumed),
+ parse_ies(RemainMsg, ParsedIeList1).
+
+% check if this element is of TV type
+is_tv_ie(T) when
+ T == ?BSSMAP_IE_NUMBER_OF_MSS;
+ T == ?BSSMAP_IE_PERIODICITY;
+ T == ?BSSMAP_IE_EXTD_RES_IND;
+ T == ?BSSMAP_IE_INTERF_BAND_TO_USE;
+ T == ?BSSMAP_IE_RR_CAUSE;
+ T == ?BSSMAP_IE_DLCI;
+ T == ?BSSMAP_IE_DOWNLINK_DTX_FLAG;
+ T == ?BSSMAP_IE_RESPONSE_RQST;
+ T == ?BSSMAP_IE_RES_IND_METHOD;
+ T == ?BSSMAP_IE_CM_INFO_T1;
+ T == ?BSSMAP_IE_CHOSEN_CHANNEL;
+ T == ?BSSMAP_IE_CIPH_RESP_MODE;
+ T == ?BSSMAP_IE_TRACE_TYPE;
+ T == ?BSSMAP_IE_TRACE_REFERENCE;
+ T == ?BSSMAP_IE_FORWARD_INDICATOR;
+ T == ?BSSMAP_IE_CHOSEN_ENCR_ALG;
+ T == ?BSSMAP_IE_CIRCUIT_POOL;
+ T == ?BSSMAP_IE_TIME_INDICATION;
+ T == ?BSSMAP_IE_CUR_CHAN_TYPE_1;
+ T == ?BSSMAP_IE_QUEUEING_IND;
+ T == ?BSSMAP_IE_SPEECH_VERSION;
+ T == ?BSSMAP_IE_ASS_REQUIREMENT;
+ T == ?BSSMAP_IE_EMLPP_PRIORITY;
+ T == ?BSSMAP_IE_CONFIG_EVO_INDI;
+ T == ?BSSMAP_IE_LSA_ACCESS_CTRL_SUPPR ->
+ true;
+is_tv_ie(_T) ->
+ false.
+
+% Parser for any non-TLV and non-TV IEs
+parse_ie(?BSSMAP_IE_CIRC_ID_CODE, Msg) ->
+ <<?BSSMAP_IE_CIRC_ID_CODE:8, Cic:16/big>> = Msg,
+ {ok, 3, {?BSSMAP_IE_CIRC_ID_CODE, Cic}};
+parse_ie(?BSSMAP_IE_CONN_REL_RQSTED, Msg) ->
+ <<?BSSMAP_IE_CONN_REL_RQSTED:8>> = Msg,
+ {ok, 1, {?BSSMAP_IE_CONN_REL_RQSTED, 1}};
+parse_ie(?BSSMAP_IE_RES_AVAIL, Msg) ->
+ <<?BSSMAP_IE_RES_AVAIL:8, ResAvail:8/binary>> = Msg,
+ {ok, 9, {?BSSMAP_IE_RES_AVAIL, ResAvail}};
+parse_ie(?BSSMAP_IE_TOT_RES_ACCESS, Msg) ->
+ <<?BSSMAP_IE_TOT_RES_ACCESS:8, ResAvail:4/binary>> = Msg,
+ {ok, 5, {?BSSMAP_IE_TOT_RES_ACCESS, ResAvail}};
+parse_ie(?BSSMAP_IE_TALKER_FLAG, Msg) ->
+ <<?BSSMAP_IE_TALKER_FLAG:8>> = Msg,
+ {ok, 1, {?BSSMAP_IE_TALKER_FLAG, 1}};
+% Default: Parser for TLV IE
+parse_ie(MsgType, Msg) ->
+ <<MsgType:8, Length:8, Value:Length/binary, _/binary>> = Msg,
+ {ok, 2+Length, {MsgType, Value}}.
+
+% Parser for simple Tag-Value IE
+parse_ie_tv(IeType, Msg) ->
+ <<IeType:8, Par:8>> = Msg,
+ {ok, 2, {IeType, Par}}.
+
+
+% FIXME
+encode_bssmap_msg(_) ->
+ ok.
+
+
+
+
+
+decode_ie(?BSSMAP_IE_CIRC_ID_CODE, <<Pcm:11, Ts:5>>) ->
+ {circuit_id, Pcm, Ts};
+decode_ie(?BSSMAP_IE_IMSI, Remain) ->
+ {imsi, bin_bcd2str(Remain)};
+decode_ie(?BSSMAP_IE_TMSI, <<Tmsi:32>>) ->
+ {tmsi, Tmsi};
+decode_ie(?BSSMAP_IE_L3_HDR_INFO, <<Pdisc:8, Tid:8>>) ->
+ {l3_hdr_info, Pdisc, Tid};
+decode_ie(?BSSMAP_IE_ENCR_INFO, <<Algos:8, Key/binary>>) ->
+ {encr_info, Algos, Key};
+decode_ie(?BSSMAP_IE_CHANNEL_TYPE, <<_:4, Spdi:4, RateType:8, Remain/binary>>) ->
+ {chan_type, Spdi, RateType, Remain};
+decode_ie(?BSSMAP_IE_EXTD_RES_IND, Ri) ->
+ <<_:6, Sm:1, Tarr:1>> = <<Ri>>,
+ {extended_ri, Sm, Tarr};
+decode_ie(?BSSMAP_IE_TOT_RES_ACCESS, <<NumFr:16/big, NumHr:16/big>>) ->
+ {tot_res_access, NumFr, NumHr};
+decode_ie(?BSSMAP_IE_CELL_ID, <<_Spare:4, Discr:4, Remain/binary>>) ->
+ {cell_id, decode_cid_ie(Discr, Remain)};
+decode_ie(?BSSMAP_IE_PRIORITY, <<_:1, Pci:1, Prio:4, Qa:1, Pvi:1>>) ->
+ {priority, Pci, Prio, Qa, Pvi};
+decode_ie(?BSSMAP_IE_CELL_ID_LIST, <<_Spare:4, Discr:4, Remain/binary>>) ->
+ {cell_id_list, decode_cid_list(Discr, Remain, [])};
+decode_ie(?BSSMAP_IE_DIAGNOSTIC, <<ErrPtr:8, _:4, BitPtr:4, MsgRecv/binary>>) ->
+ {diagnostic, ErrPtr, BitPtr, MsgRecv};
+decode_ie(?BSSMAP_IE_CHOSEN_CHANNEL, Int) ->
+ <<Mode:4, Chan:4>> = <<Int:8>>,
+ {chosen_channel, Mode, Chan};
+decode_ie(?BSSMAP_IE_MOBILE_IDENTITY, Data) ->
+ % FIXME
+ fixme;
+% Default: don't decode
+decode_ie(IeI, Data) ->
+ {IeI, Data}.
+
+decode_cid_ie(?CELL_ID_WHOLE_GLOBAL, Remain) ->
+ <<Mcc2:4, Mcc1:4, Mnc3:4, Mcc3:4, Mnc2:4, Mnc1:4, Lac:16/big, Ci:16/big>> = Remain,
+ [{mcc, [Mcc1, Mcc2, Mcc3]}, {mnc, [Mnc1, Mnc2, Mnc3]}, {lac, Lac}, {cid, Ci}];
+decode_cid_ie(?CELL_ID_LAC_AND_CI, Remain) ->
+ <<Lac:16/big, Ci:16/big>> = Remain,
+ [{lac, Lac}, {cid, Ci}];
+decode_cid_ie(?CELL_ID_CI, Remain) ->
+ <<Ci:16/big>> = Remain,
+ [{cid, Ci}];
+decode_cid_ie(?CELL_ID_NO_CELL, _Remain) ->
+ [];
+decode_cid_ie(?CELL_ID_UTRAN_PLMN_LAC_RNC, Remain) ->
+ <<Mcc2:4, Mcc1:4, Mnc3:4, Mcc3:4, Mnc2:4, Mnc1:4, Lac:16/big, Rnc:16/big>> = Remain,
+ [{mcc, [Mcc1, Mcc2, Mcc3]}, {mnc, [Mnc1, Mnc2, Mnc3]}, {lac, Lac}, {rnc_id, Rnc}];
+decode_cid_ie(?CELL_ID_UTRAN_RNC, Remain) ->
+ <<Rnc:16/big>> = Remain,
+ [{rnc_id, Rnc}];
+decode_cid_ie(?CELL_ID_UTRAN_LAC_RNC, Remain) ->
+ <<Lac:16/big, Rnc:16/big>> = Remain,
+ [{lac, Lac}, {rnc_id, Rnc}].
+
+decode_cid_list(Discr, Data, List) ->
+ case Discr of
+ ?CELL_ID_WHOLE_GLOBAL -> Len = 7;
+ ?CELL_ID_LAC_AND_CI -> Len = 4;
+ ?CELL_ID_CI -> Len = 2;
+ ?CELL_ID_NO_CELL -> Len = 0;
+ ?CELL_ID_UTRAN_PLMN_LAC_RNC -> Len = 7;
+ ?CELL_ID_UTRAN_RNC -> Len = 2;
+ ?CELL_ID_UTRAN_LAC_RNC -> Len = 4
+ end,
+ <<Subset:Len/binary, Remain/binary>> = Data,
+ Elem = {cell_id, decode_cid_ie(Discr, Subset)},
+ decode_cid_list(Discr, Remain, List ++ [Elem]).
+
+
+
+bin_bcd2str(BcdBin) when is_binary(BcdBin) ->
+ bin_bcd2str(BcdBin, []).
+bin_bcd2str(<<>>, List) ->
+ List;
+bin_bcd2str(BcdBin, List) ->
+ <<Nibble:4, Remain/bitstring>> = BcdBin,
+ Char = "0" + Nibble,
+ bin_bcd2str(Remain, List ++ [Char]).
diff --git a/src/isup.hrl b/src/isup.hrl
deleted file mode 100644
index 55750ea..0000000
--- a/src/isup.hrl
+++ /dev/null
@@ -1,111 +0,0 @@
-% Table 1 / Q.762 - ISDN user part message acronyms
-% Table C-3 / Q.762
--define(ISUP_MSGT_ACM, 2#00000110). % Address complete
--define(ISUP_MSGT_ANM, 2#00001001). % Answer
-%-define(ISUP_MSGT_APM). % Application transport
--define(ISUP_MSGT_BLA, 2#00010101). % Blocking acknowledgement
--define(ISUP_MSGT_BLO, 2#00010011). % Blocking
--define(ISUP_MSGT_CCR, 2#00010001). % Continuity check request
--define(ISUP_MSGT_CFN, 2#00101111). % Confusion
--define(ISUP_MSGT_CGB, 2#00011000). % Circuit group blocking
--define(ISUP_MSGT_CGBA,2#00011010).% Circuit group blocking acknowledgement
--define(ISUP_MSGT_CGU, 2#00011001). % Circuit group unblocking
--define(ISUP_MSGT_CGUA,2#00011011).% Circuit group unblocking acknowledgement
--define(ISUP_MSGT_CON, 2#00000111). % Connect
--define(ISUP_MSGT_COT, 2#00000101). % Continuity
--define(ISUP_MSGT_CPG, 2#00101100). % Call progress
--define(ISUP_MSGT_CRG, 2#00110001). % Charge information
--define(ISUP_MSGT_CQM, 2#00101010). % Circuit group query
--define(ISUP_MSGT_CQR, 2#00101011). % Circuit group query response
--define(ISUP_MSGT_DRS, 2#00100111). % Delayed release (reserved – used in 1988 version)
--define(ISUP_MSGT_FAA, 2#00100000). % Facility accepted
-%-define(ISUP_MSGT_FAC). % Facility
--define(ISUP_MSGT_FAR, 2#00011111). % Facility request
--define(ISUP_MSGT_FOT, 2#00001000). % Forward transfer
--define(ISUP_MSGT_FRJ, 2#00100001). % Facility reject
--define(ISUP_MSGT_GRA, 2#00101001). % Circuit group reset acknowledgement
--define(ISUP_MSGT_GRS, 2#00010111). % Circuit group reset
--define(ISUP_MSGT_IAM, 2#00000001). % Initial address
-%-define(ISUP_MSGT_IDR). % Identification request
-%-define(ISUP_MSGT_IRS). % Identification response
--define(ISUP_MSGT_INF, 2#00000100). % Information
--define(ISUP_MSGT_INR, 2#00000011). % Information request
--define(ISUP_MSGT_LPA, 2#00100100). % Loop back acknowledgement
-%-define(ISUP_MSGT_LOP). % Loop prevention
-%-define(ISUP_MSGT_NRM). % Network resource management
--define(ISUP_MSGT_OLM, 2#00110000). % Overload
--define(ISUP_MSGT_PAM, 2#00101000). % Pass-along
-%-define(ISUP_MSGT_PRI). % Pre-release information
--define(ISUP_MSGT_REL, 2#00001100). % Release
--define(ISUP_MSGT_RES, 2#00001110). % Resume
--define(ISUP_MSGT_RLC, 2#00010000). % Release complete
--define(ISUP_MSGT_RSC, 2#00010010). % Reset circuit
--define(ISUP_MSGT_SAM, 2#00000010). % Subsequent address
-%-define(ISUP_MSGT_SDM). % Subsequent directory number
-%-define(ISUP_MSGT_SGM). % Segmentation
--define(ISUP_MSGT_SUS, 2#00001101). % Suspend
--define(ISUP_MSGT_UBL, 2#00010100). % Unblocking
--define(ISUP_MSGT_UBA, 2#00010110). % Unblocking acknowledgement
--define(ISUP_MSGT_UCIC,2#00101110).% Unequipped circuit identification code
-%-define(ISUP_MSGT_UPA). % User part available
-%-define(ISUP_MSGT_UPT). % User part test
--define(ISUP_MSGT_USR, 2#00101101). % User-to-user information
-
-
-% TABLE C-4/Q.767
--define(ISUP_PAR_ACC_TRANSP, 2#00000011). % Access transport
--define(ISUP_PAR_AUT_CONG_LVL, 2#00100111). % Automatic congestion level
--define(ISUP_PAR_BACKW_CALL_IND, 2#00010001). % Backward call indicators
--define(ISUP_PAR_CALL_MOD_IND, 2#00010111). % Call modification indicators
--define(ISUP_PAR_CALL_REF, 2#00000001). % Call reference
--define(ISUP_PAR_CALLED_P_NUM, 2#00000100). % Called party number
--define(ISUP_PAR_CALLING_P_NUM, 2#00001010). % Calling party number
--define(ISUP_PAR_CALLING_P_CAT, 2#00001001). % Calling party category
--define(ISUP_PAR_CAUSE_IND, 2#00010010). % Cause indicators
--define(ISUP_PAR_CG_SUB_MSGT_IND, 2#00010101). % Circuit group supervision message type indicator
--define(ISUP_PAR_CIRC_STATE_IND, 2#00100110). % Circuit state indicator
--define(ISUP_PAR_CLSD_U_INTERL_CODE, 2#00011010). % Closed user interlock code
--define(ISUP_PAR_CONNECTED_NUM, 2#00100001). % Connected number
--define(ISUP_PAR_CONN_REQ, 2#00001101). % Connection request
--define(ISUP_PAR_CONTINUITY_IND, 2#00010000). % Continuity idnicators
--define(ISUP_PAR_END_OF_OPT, 2#00000000). % End of optional parameters
--define(ISUP_PAR_EVENT_INFO, 2#00100100). % Event information
--define(ISUP_PAR_FACILITY_IND, 2#00011000). % Facility indicators
--define(ISUP_PAR_FW_CALL_IND, 2#00000111). % Forward call indicators
--define(ISUP_PAR_INFO_IND, 2#00001111). % Information indicators
--define(ISUP_PAR_INFO_REQ_IND, 2#00001110). % Information request indicatos
--define(ISUP_PAR_NAT_OF_CONN_IND, 2#00000110). % Nature of connection indicators
--define(ISUP_PAR_OPT_BW_CALL_IND, 2#00101001). % Optional backward call indicators
--define(ISUP_PAR_OPT_FW_CALL_IND, 2#00001000). % Optional forward call indicators
--define(ISUP_PAR_ORIG_CALLED_NUM, 2#00101000). % Original called number
--define(ISUP_PAR_RANGE_AND_STATUS, 2#00010110). % Range and status
--define(ISUP_PAR_REDIR_NUM, 2#00001011). % Redirecting number
--define(ISUP_PAR_REDIR_INFO, 2#00010011). % Redirection information
--define(ISUP_PAR_REDIRECTION_NUM, 2#00001100). % Redirection number
--define(ISUP_PAR_SIGN_POINT_CODE, 2#00011110). % Signalling point code
--define(ISUP_PAR_SUBSEQ_NUM, 2#00000101). % Subsequent number
--define(ISUP_PAR_SUSP_RES_IND, 2#00100010). % Suspend/resume indicators
--define(ISUP_PAR_XMIT_NET_SEL, 2#00100011). % Transmit network selection
--define(ISUP_PAR_TRANSM_MED_REQ, 2#00000010). % Transmission medium requirement
--define(ISUP_PAR_USER_SERV_INFO, 2#00011101). % User service information
--define(ISUP_PAR_USER_USER_IND, 2#00101010). % User-to-user indicators
--define(ISUP_PAR_USER_USER_INFO, 2#00100000). % User-to-user information
-
--define(ISUP_ADDR_NAT_NATIONAL, 2#0000011). % National (significant) number
--define(ISUP_ADDR_NAT_INTERNATIONAL, 2#0000100). % International number
-
--record(party_number, {
- nature_of_addr_ind,
- internal_net_num, % only in called party
- number_incompl_ind, % only in calling party
- numbering_plan,
- present_restrict, % only in calling party
- screening_ind, % only in calling party
- phone_number}
- ).
-
--record(isup_msg, {
- msg_type,
- cic,
- parameters
- }).
diff --git a/src/m2ua.hrl b/src/m2ua.hrl
deleted file mode 100644
index 26f10fc..0000000
--- a/src/m2ua.hrl
+++ /dev/null
@@ -1,59 +0,0 @@
-
-% RFC 3331 Section 3.1.3 Message Class
--define(M2UA_MSGC_MGMT, 0). % Management Messages [IUA/M2UA/M3UA/SUA]
--define(M2UA_MSGC_TRANSFER, 1). % Transfer Messages [M3UA]
--define(M2UA_MSGC_SSNM, 2). % SS7 Signalling Network Management [M3UA/SUA]
--define(M2UA_MSGC_ASPSM, 3). % ASP State Maintenance [IUA/M2UA/M3UA/SUA]
--define(M2UA_MSGC_ASPTM, 4). % ASP Traffic Maintenance [IUA/M2UA/M3UA/SUA]
--define(M2UA_MSGC_QPTM, 5). % Q.921/Q.931 Boundary Primitives Transport [IUA]
--define(M2UA_MSGC_MAUP, 6). % MTP2 User Adaption [M2UA]
--define(M2UA_MSGC_CONNLESS, 7). % Connectionless Messages [SUA]
--define(M2UA_MSGC_CONN, 8). % Connection oriented messages [SUA]
--define(M2UA_MSGC_RKM, 9). % Routing Key Management [M3UA]
--define(M2UA_MSGC_IIM, 10). % Interface Identifier Management (M2UA)
-
-% RFC 3331 Section 3.1.4 Message Type
--define(M2UA_MAUP_MSGT_RESERVED, 0).
--define(M2UA_MAUP_MSGT_DATA, 1).
--define(M2UA_MAUP_MSGT_EST_REQ, 2).
--define(M2UA_MAUP_MSGT_EST_CONF, 3).
--define(M2UA_MAUP_MSGT_REL_REQ, 4).
--define(M2UA_MAUP_MSGT_REL_CONF, 5).
--define(M2UA_MAUP_MSGT_REL_IND, 6).
--define(M2UA_MAUP_MSGT_STATE_REQ, 7).
--define(M2UA_MAUP_MSGT_STATE_CONF, 8).
--define(M2UA_MAUP_MSGT_STATE_IND, 9).
--define(M2UA_MAUP_MSGT_DATA_RETR_REQ, 10).
--define(M2UA_MAUP_MSGT_DATA_RETR_CONF, 11).
--define(M2UA_MAUP_MSGT_DATA_RETR_IND, 12).
--define(M2UA_MAUP_MSGT_DATA_RETR_COMPL_IND, 13).
--define(M2UA_MAUP_MSGT_CONG_IND, 14).
--define(M2UA_MAUP_MSGT_DATA_ACK, 15).
-
-
--define(M2UA_ASPSM_MSGT_UP, 0).
--define(M2UA_ASPSM_MSGT_DOWN, 1).
--define(M2UA_ASPSM_MSGT_BEAT, 2).
--define(M2UA_ASPSM_MSGT_UP_ACK, 3).
--define(M2UA_ASPSM_MSGT_DOWN_ACK, 5).
--define(M2UA_ASPSM_MSGT_BEAT_ACK, 6).
-
--define(M2UA_ASPTM_MSGT_ACTIVE, 1).
--define(M2UA_ASPTM_MSGT_INACTIVE, 2).
--define(M2UA_ASPTM_MSGT_ACTIVE_ACK, 3).
--define(M2UA_ASPTM_MSGT_INACTIVE_ACK, 4).
-
--define(M2UA_MGMT_MSGT_ERROR, 0).
--define(M2UA_MGMT_MSGT_NOTIFY, 1).
-
--define(M2UA_MGMT_IIM_REG_REQ, 1).
--define(M2UA_MGMT_IIM_REG_RSP, 2).
--define(M2UA_MGMT_IIM_DEREG_REQ, 3).
--define(M2UA_MGMT_IIM_DEREG_RSP, 4).
-
--record(m2ua_msg, {
- msg_class,
- msg_type,
- parameters
- }).
-
diff --git a/src/mgw_nat.erl b/src/mgw_nat.erl
deleted file mode 100644
index 39c8abe..0000000
--- a/src/mgw_nat.erl
+++ /dev/null
@@ -1,294 +0,0 @@
-%
-
-% (C) 2011 by Harald Welte <laforge@gnumonks.org>
-% (C) 2011 OnWaves
-%
-% All Rights Reserved
-%
-% This program is free software; you can redistribute it and/or modify
-% it under the terms of the GNU Affero General Public License as
-% published by the Free Software Foundation; either version 3 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 Affero General Public License
-% along with this program. If not, see <http://www.gnu.org/licenses/>.
-
--module(mgw_nat).
--author("Harald Welte <laforge@gnumonks.org>").
--export([mangle_rx_data/3]).
-
-%-include_lib("kernel/include/inet.hrl").
-%-include_lib("kernel/include/inet_sctp.hrl").
-
--include("m2ua.hrl").
--include("mtp3.hrl").
--include("isup.hrl").
--include("sccp.hrl").
-
-% mangle the received data
-mangle_rx_data(L, From, Data) when is_binary(Data) ->
- {ok, M2ua} = m2ua_codec:parse_m2ua_msg(Data),
- %io:format("M2UA Decode: ~p~n", [M2ua]),
- case M2ua of
- #m2ua_msg{msg_class = ?M2UA_MSGC_MAUP,
- msg_type = ?M2UA_MAUP_MSGT_DATA} ->
- M2ua_out = mangle_rx_m2ua_maup(L, From, M2ua);
- #m2ua_msg{} ->
- % simply pass it along unmodified
- M2ua_out = M2ua
- end,
- % re-encode the data
- %io:format("M2UA Encode: ~p~n", [M2ua_out]),
- m2ua_codec:encode_m2ua_msg(M2ua_out).
-
-% mangle the received M2UA
-mangle_rx_m2ua_maup(L, From, M2ua = #m2ua_msg{parameters = Params}) ->
- {_Len, M2uaPayload} = proplists:get_value(16#300, Params),
- Mtp3 = mtp3_codec:parse_mtp3_msg(M2uaPayload),
- %io:format("MTP3 Decode: ~p~n", [Mtp3]),
- Mtp3_out = mangle_rx_mtp3(L, From, Mtp3),
- %io:format("MTP3 Encode: ~p~n", [Mtp3_out]),
- Mtp3OutBin = mtp3_codec:encode_mtp3_msg(Mtp3_out),
- Params2 = proplists:delete(16#300, Params),
- ParamsNew = Params2 ++ [{16#300, {byte_size(Mtp3OutBin), Mtp3OutBin}}],
- % return mangled parsed m2ua msg
- M2ua#m2ua_msg{parameters = ParamsNew}.
-
-% mangle the MTP3 payload
-mangle_rx_mtp3(L, From, Mtp3 = #mtp3_msg{service_ind = Service}) ->
- mangle_rx_mtp3_serv(L, From, Service, Mtp3).
-
-% mangle the ISUP content
-mangle_rx_mtp3_serv(_L, From, ?MTP3_SERV_ISUP, Mtp3 = #mtp3_msg{payload = Payload}) ->
- io:format("ISUP In: ~p~n", [Payload]),
- Isup = isup_codec:parse_isup_msg(Payload),
- io:format("ISUP Decode: ~p~n", [Isup]),
- % FIXME
- IsupMangled = mangle_rx_isup(From, Isup#isup_msg.msg_type, Isup),
- if IsupMangled == Isup ->
- Mtp3;
- true ->
- io:format("ISUP Encode In: ~p~n", [IsupMangled]),
- Payload_out = isup_codec:encode_isup_msg(IsupMangled),
- io:format("ISUP Encode Out: ~p~n", [Payload_out]),
- % return modified MTP3 payload
- Mtp3#mtp3_msg{payload = Payload_out}
- end;
-% mangle the SCCP content
-mangle_rx_mtp3_serv(_L, From, ?MTP3_SERV_SCCP, Mtp3 = #mtp3_msg{payload = Payload}) ->
- io:format("SCCP In: ~p~n", [Payload]),
- {ok, Sccp} = sccp_codec:parse_sccp_msg(Payload),
- io:format("SCCP Decode: ~p~n", [Sccp]),
- SccpMangled = mangle_rx_sccp(From, Sccp#sccp_msg.msg_type, Sccp),
- SccpMasqued = sccp_masq:sccp_masq_msg(From, SccpMangled#sccp_msg.msg_type,
- SccpMangled),
- if SccpMasqued == Sccp ->
- Mtp3;
- true ->
- io:format("SCCP Encode In: ~p~n", [SccpMasqued]),
- Payload_out = sccp_codec:encode_sccp_msg(SccpMasqued),
- io:format("SCCP Encode Out: ~p~n", [Payload_out]),
- % return modified MTP3 payload
- Mtp3#mtp3_msg{payload = Payload_out}
- end;
-% default: do nothing
-mangle_rx_mtp3_serv(_L, _From, _, Mtp3) ->
- Mtp3.
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% Actual mangling of the decoded SCCP messages
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-% iterate over list of rewrite tuples and apply translation if there is a match
-do_sccp_gt_rewrite(GT, _From, []) ->
- GT;
-do_sccp_gt_rewrite(GT = #global_title{phone_number = PhoneNum}, from_stp, [Head|List]) ->
- {MscSide, StpSide, Comment} = Head,
- if PhoneNum == StpSide ->
- NewPhoneNum = MscSide,
- io:format("SCCP STP->MSC rewrite (~p) ~p -> ~p~n",
- [Comment, PhoneNum, NewPhoneNum]),
- GT#global_title{phone_number = NewPhoneNum};
- true ->
- do_sccp_gt_rewrite(GT, from_stp, List)
- end;
-do_sccp_gt_rewrite(GT = #global_title{phone_number = PhoneNum}, from_msc, [Head|List]) ->
- {MscSide, StpSide, Comment} = Head,
- if PhoneNum == MscSide ->
- NewPhoneNum = StpSide,
- io:format("SCCP MSC->STP rewrite (~p) ~p -> ~p~n",
- [Comment, PhoneNum, NewPhoneNum]),
- GT#global_title{phone_number = NewPhoneNum};
- true ->
- do_sccp_gt_rewrite(GT, from_msc, List)
- end.
-
-% mangle called address
-mangle_rx_called(from_stp, Addr = #sccp_addr{global_title = GT}) ->
- {ok, RewriteTbl} = application:get_env(sccp_rewrite_tbl),
- GTout = do_sccp_gt_rewrite(GT, from_stp, RewriteTbl),
- Addr#sccp_addr{global_title = GTout};
-mangle_rx_called(_From, Addr) ->
- Addr.
-
-% mangle calling address
-mangle_rx_calling(from_msc, Addr = #sccp_addr{global_title = GT}) ->
- {ok, RewriteTbl} = application:get_env(sccp_rewrite_tbl),
- GTout = do_sccp_gt_rewrite(GT, from_msc, RewriteTbl),
- Addr#sccp_addr{global_title = GTout};
-mangle_rx_calling(_From, Addr) ->
- Addr.
-
-mangle_rx_sccp(From, ?SCCP_MSGT_UDT, Msg = #sccp_msg{parameters = Opts}) ->
- CalledParty = proplists:get_value(called_party_addr, Opts),
- CalledPartyNew = mangle_rx_called(From, CalledParty),
- CallingParty = proplists:get_value(calling_party_addr, Opts),
- CallingPartyNew = mangle_rx_calling(From, CallingParty),
- Opts1 = lists:keyreplace(called_party_addr, 1, Opts,
- {called_party_addr, CalledPartyNew}),
- Opts2 = lists:keyreplace(calling_party_addr, 1, Opts1,
- {calling_party_addr, CallingPartyNew}),
- Msg#sccp_msg{parameters = Opts2};
-mangle_rx_sccp(_From, _MsgType, Msg) ->
- Msg.
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% Actual mangling of the decoded ISUP messages
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-% iterate over list of parameters and call mangle_rx_isup_par() for each one
-mangle_rx_isup_params(_From, _MsgType, _Msg, ParListOut, []) ->
- ParListOut;
-mangle_rx_isup_params(From, MsgType, Msg, ParListOut, [Par|ParList]) ->
- ParOut = mangle_rx_isup_par(From, MsgType, Msg, Par),
- mangle_rx_isup_params(From, MsgType, Msg, ParListOut++[ParOut], ParList).
-
-% manipulate phone numbers
-mangle_rx_isup_par(From, MsgType, _Msg, {ParType, ParBody}) when
- ParType == ?ISUP_PAR_CALLED_P_NUM;
- ParType == ?ISUP_PAR_CONNECTED_NUM;
- ParType == ?ISUP_PAR_CALLING_P_NUM ->
- NewParBody = mangle_isup_number(From, MsgType, ParType, ParBody),
- {ParType, NewParBody};
-% defauly case: do not mangle this parameter
-mangle_rx_isup_par(_From, _MsgType, _Msg, Par) ->
- Par.
-
-% mangle an incoming ISUP message
-mangle_rx_isup(From, MsgType, Msg = #isup_msg{parameters = Params}) ->
- ParamsOut = mangle_rx_isup_params(From, MsgType, Msg, [], Params),
- % return message with modified parameter list
- Msg#isup_msg{parameters = ParamsOut}.
-
-% STP->MSC: Mangle a Party Number in IAM
-mangle_isup_number(from_stp, ?ISUP_MSGT_IAM, NumType, PartyNum) ->
- case NumType of
- ?ISUP_PAR_CALLED_P_NUM ->
- % First convert to international number, if it is national
- Num1 = isup_party_internationalize(PartyNum,
- application:get_env(intern_pfx)),
- io:format("IAM MSRN rewrite (STP->MSC): "),
- isup_party_replace_prefix(Num1,
- application:get_env(msrn_pfx_stp),
- application:get_env(msrn_pfx_msc));
- _ ->
- PartyNum
- end;
-% MSC->STP: Mangle connected number in response to IAM
-mangle_isup_number(from_msc, MsgT, NumType, PartyNum) when MsgT == ?ISUP_MSGT_CON;
- MsgT == ?ISUP_MSGT_ANM ->
- case NumType of
- ?ISUP_PAR_CONNECTED_NUM ->
- io:format("CON MSRN rewrite (MSC->STP): "),
- Num1 = isup_party_replace_prefix(PartyNum,
- application:get_env(msrn_pfx_msc),
- application:get_env(msrn_pfx_stp)),
- % Second: convert to national number, if it is international
- isup_party_nationalize(Num1,
- application:get_env(intern_pfx));
- _ ->
- PartyNum
- end;
-% MAC->STP: Mangle IAM international -> national
-mangle_isup_number(from_msc, ?ISUP_MSGT_IAM, NumType, PartyNum) ->
- case NumType of
- ?ISUP_PAR_CALLED_P_NUM ->
- isup_party_nationalize(PartyNum,
- applicaiton:get_env(intern_pfx));
- _ ->
- PartyNum
- end;
-% STP->MSC: Mangle connected number in response to IAM (national->international)
-mangle_isup_number(from_stp, MsgT, NumType, PartyNum) when MsgT == ?ISUP_MSGT_CON;
- MsgT == ?ISUP_MSGT_ANM ->
- case NumType of
- ?ISUP_PAR_CONNECTED_NUM ->
- isup_party_internationalize(PartyNum,
- application:get_env(intern_pfx));
- _ ->
- PartyNum
- end;
-% default case: no rewrite
-mangle_isup_number(from_msc, _, _, PartyNum) ->
- PartyNum.
-
-% replace the prefix of PartyNum with NewPfx _if_ the current prefix matches MatchPfx
-isup_party_replace_prefix(PartyNum, MatchPfx, NewPfxInt) ->
- IntIn = PartyNum#party_number.phone_number,
- DigitsIn = osmo_util:int2digit_list(IntIn),
- NewPfx = osmo_util:int2digit_list(NewPfxInt),
- MatchPfxLen = length(MatchPfx),
- Pfx = lists:sublist(DigitsIn, 1, MatchPfxLen),
- if Pfx == MatchPfx ->
- Trailer = lists:sublist(DigitsIn, MatchPfxLen+1, length(DigitsIn)-MatchPfxLen),
- DigitsOut = NewPfx ++ Trailer,
- io:format("Prefix rewrite: ~p -> ~p~n", [DigitsIn, DigitsOut]);
- true ->
- io:format("Prefix rewrite: NO MATCH (~p != ~p)~n", [Pfx, MatchPfx]),
- DigitsOut = DigitsIn
- end,
- IntOut = osmo_util:digit_list2int(DigitsOut),
- PartyNum#party_number{phone_number = IntOut}.
-
-isup_party_internationalize(PartyNum, CountryCode) ->
- #party_number{phone_number = IntIn, nature_of_addr_ind = Nature} = PartyNum,
- DigitsIn = osmo_util:int2digit_list(IntIn),
- case Nature of
- ?ISUP_ADDR_NAT_NATIONAL ->
- DigitsOut = CountryCode ++ DigitsIn,
- NatureOut = ?ISUP_ADDR_NAT_INTERNATIONAL,
- io:format("Internationalize: ~p -> ~p~n", [DigitsIn, DigitsOut]);
- _ ->
- DigitsOut = DigitsIn,
- NatureOut = Nature
- end,
- IntOut = osmo_util:digit_list2int(DigitsOut),
- PartyNum#party_number{phone_number = IntOut, nature_of_addr_ind = NatureOut}.
-
-isup_party_nationalize(PartyNum, CountryCode) ->
- #party_number{phone_number = IntIn, nature_of_addr_ind = Nature} = PartyNum,
- DigitsIn = osmo_util:int2digit_list(IntIn),
- CountryCodeLen = length(CountryCode),
- case Nature of
- ?ISUP_ADDR_NAT_INTERNATIONAL ->
- Pfx = lists:sublist(DigitsIn, CountryCodeLen),
- if Pfx == CountryCode ->
- DigitsOut = lists:sublist(DigitsIn, CountryCodeLen+1,
- length(DigitsIn)-CountryCodeLen),
- NatureOut = ?ISUP_ADDR_NAT_NATIONAL,
- io:format("Nationalize: ~p -> ~p~n", [DigitsIn, DigitsOut]);
- true ->
- DigitsOut = DigitsIn,
- NatureOut = Nature
- end;
- _ ->
- DigitsOut = DigitsIn,
- NatureOut = Nature
- end,
- IntOut = osmo_util:digit_list2int(DigitsOut),
- PartyNum#party_number{phone_number = IntOut, nature_of_addr_ind = NatureOut}.
diff --git a/src/mgw_nat_app.erl b/src/mgw_nat_app.erl
deleted file mode 100644
index c4e32ea..0000000
--- a/src/mgw_nat_app.erl
+++ /dev/null
@@ -1,16 +0,0 @@
--module(mgw_nat_app).
--behavior(application).
--export([start/2, stop/1]).
-
--export([reload_config/0]).
-
-start(_Type, _Args) ->
- Sup = mgw_nat_sup:start_link(),
- io:format("Sup ~p~n", [Sup]),
- Sup.
-
-stop(_State) ->
- ok.
-
-reload_config() ->
- osmo_util:reload_config().
diff --git a/src/mgw_nat_sup.erl b/src/mgw_nat_sup.erl
deleted file mode 100644
index 2dfe245..0000000
--- a/src/mgw_nat_sup.erl
+++ /dev/null
@@ -1,40 +0,0 @@
-% OTP Supervisor for MGW NAT
-
-% (C) 2011 by Harald Welte <laforge@gnumonks.org>
-% (C) 2011 OnWaves
-%
-% All Rights Reserved
-%
-% This program is free software; you can redistribute it and/or modify
-% it under the terms of the GNU Affero General Public License as
-% published by the Free Software Foundation; either version 3 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 Affero General Public License
-% along with this program. If not, see <http://www.gnu.org/licenses/>.
-
--module(mgw_nat_sup).
--behavior(supervisor).
-
--export([start_link/0]).
--export([init/1]).
-
-start_link() ->
- supervisor:start_link({local, ?MODULE}, ?MODULE, []).
-
-init(_Arg) ->
- {ok, MscLocalIp} = application:get_env(msc_local_ip),
- {ok, MscLocalPort} = application:get_env(msc_local_port),
- {ok, MscRemoteIp} = application:get_env(msc_remote_ip),
- {ok, StpRemoteIp} = application:get_env(stp_remote_ip),
- {ok, StpRemotePort} = application:get_env(stp_remote_port),
- SctpHdlrArgs = [MscLocalIp, MscLocalPort, MscRemoteIp,
- StpRemoteIp, StpRemotePort],
- MgwChild = {mgw_nat_usr, {mgw_nat_usr, start_link, [SctpHdlrArgs]},
- permanent, 2000, worker, [mgw_nat_usr, sctp_handler, mgw_nat]},
- {ok,{{one_for_all,1,1}, [MgwChild]}}.
diff --git a/src/mgw_nat_usr.erl b/src/mgw_nat_usr.erl
deleted file mode 100644
index f738f7e..0000000
--- a/src/mgw_nat_usr.erl
+++ /dev/null
@@ -1,59 +0,0 @@
-% Wrapper code, wrapping sctp_handler.erl into OTP gen_server
-
-% (C) 2011 by Harald Welte <laforge@gnumonks.org>
-% (C) 2011 OnWaves
-%
-% All Rights Reserved
-%
-% This program is free software; you can redistribute it and/or modify
-% it under the terms of the GNU Affero General Public License as
-% published by the Free Software Foundation; either version 3 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 Affero General Public License
-% along with this program. If not, see <http://www.gnu.org/licenses/>.
-
--module(mgw_nat_usr).
--author("Harald Welte <laforge@gnumonks.org>").
-
--behavior(gen_server).
-
--export([start_link/1, stop/0, sccp_masq_reset/0]).
--export([init/1, handle_cast/2, handle_info/2, terminate/2]).
-
-
-start_link(Params) ->
- gen_server:start_link({local, ?MODULE}, ?MODULE, Params, []).
-
-stop() ->
- gen_server:cast(?MODULE, stop).
-
-sccp_masq_reset() ->
- gen_server:cast(?MODULE, sccp_masq_reset).
-
-
-%% Callback functions of the OTP behavior
-
-init(Params) ->
- sccp_masq:init(),
- apply(sctp_handler, init, Params).
-
-handle_cast(stop, LoopData) ->
- {stop, normal, LoopData};
-
-handle_cast(sccp_masq_reset, LoopData) ->
- sccp_masq:reset(),
- {noreply, LoopData}.
-
-terminate(_Reason, _LoopData) ->
- ok.
-
-% callback for other events like incoming SCTP message
-handle_info({sctp, Sock, Ip, Port, Data}, LoopData) ->
- NewL = sctp_handler:handle_sctp(LoopData, {sctp, Sock, Ip, Port, Data}),
- {noreply, NewL}.
diff --git a/src/mtp3.hrl b/src/mtp3.hrl
deleted file mode 100644
index 53025a7..0000000
--- a/src/mtp3.hrl
+++ /dev/null
@@ -1,21 +0,0 @@
-
--define(MTP3_SERV_MGMT, 0).
--define(MTP3_SERV_MTN, 1).
--define(MTP3_SERV_SCCP, 3).
--define(MTP3_SERV_TUP, 4).
--define(MTP3_SERV_ISUP, 5).
-
--record(mtp3_routing_label, {
- sig_link_sel,
- origin_pc,
- dest_pc
- }).
-
--record(mtp3_msg, {
- network_ind,
- service_ind,
- routing_label,
- payload
- }).
-
-
diff --git a/src/sccp.hrl b/src/sccp.hrl
deleted file mode 100644
index b445495..0000000
--- a/src/sccp.hrl
+++ /dev/null
@@ -1,103 +0,0 @@
-
-% Table 1 / Q.713 - SCCP Message Types
--define(SCCP_MSGT_CR, 1). % Connection request
--define(SCCP_MSGT_CC, 2). % Connection confirm
--define(SCCP_MSGT_CREF, 3). % Connection refused
--define(SCCP_MSGT_RLSD, 4). % Released
--define(SCCP_MSGT_RLC, 5). % Release complete
--define(SCCP_MSGT_DT1, 6). % Data form 1
--define(SCCP_MSGT_DT2, 7). % Data form 2
--define(SCCP_MSGT_AK, 8). % Data acknowledgement
--define(SCCP_MSGT_UDT, 9). % Unitdata
--define(SCCP_MSGT_UDTS, 10). % Unitdata service
--define(SCCP_MSGT_ED, 11). % Expedited data
--define(SCCP_MSGT_EA, 12). % Expedited data ack
--define(SCCP_MSGT_RSR, 13). % Reset Request
--define(SCCP_MSGT_RSC, 14). % Reset Confirmation
--define(SCCP_MSGT_ERR, 15). % Protocol data unit error
--define(SCCP_MSGT_IT, 16). % Inactivity test
--define(SCCP_MSGT_XUDT, 17). % Extended unitdata
--define(SCCP_MSGT_XUDTS, 18). % Extended unitdata service
--define(SCCP_MSGT_LUDT, 19). % Long unitdata
--define(SCCP_MSGT_LUDTS, 20). % Long unitdata service
-
-% Table 2 / Q.713 - SCCP parameter name codes
--define(SCCP_PNC_END_OF_OPTIONAL, 0).
--define(SCCP_PNC_DESTINATION_LOCAL_REFERENCE, 1).
--define(SCCP_PNC_SOURCE_LOCAL_REFERENCE, 2).
--define(SCCP_PNC_CALLED_PARTY_ADDRESS, 3).
--define(SCCP_PNC_CALLING_PARTY_ADDRESS, 4).
--define(SCCP_PNC_PROTOCOL_CLASS, 5).
--define(SCCP_PNC_SEGMENTING, 6).
--define(SCCP_PNC_RECEIVE_SEQ_NUMBER, 7).
--define(SCCP_PNC_SEQUENCING, 8).
--define(SCCP_PNC_CREDIT, 9).
--define(SCCP_PNC_RELEASE_CAUSE, 10).
--define(SCCP_PNC_RETURN_CAUSE, 11).
--define(SCCP_PNC_RESET_CAUSE, 12).
--define(SCCP_PNC_ERROR_CAUSE, 13).
--define(SCCP_PNC_REFUSAL_CAUSE, 14).
--define(SCCP_PNC_DATA, 15).
--define(SCCP_PNC_SEGMENTATION, 16).
--define(SCCP_PNC_HOP_COUNTER, 17).
--define(SCCP_PNC_IMPORTANCE, 18).
--define(SCCP_PNC_LONG_DATA, 19).
-
-% According to Q.713 Section 3.4.1
--define(SCCP_GTI_NO_GT, 2#0000).
--define(SCCP_GTI_NAT_ONLY, 2#0001).
--define(SCCP_GTI_TT_ONLY, 2#0010).
--define(SCCP_GTI_TT_NP_ENC, 2#0011).
--define(SCCP_GTI_TT_NP_ENC_NAT, 2#0100).
-
-% According to Q.731 Section 3.4.2.2
--define(SCCP_SSN_UNKNOWN, 2#000000000).
--define(SCCP_SSN_SCCP_MGMT, 2#000000001).
--define(SCCP_SSN_ITU_T, 2#000000010).
--define(SCCP_SSN_ISUP, 2#000000011).
--define(SCCP_SSN_OAM, 2#000000100).
--define(SCCP_SSN_MAP, 2#000000101).
--define(SCCP_SSN_HLR, 2#000000110).
--define(SCCP_SSN_VLR, 2#000000111).
--define(SCCP_SSN_MSC, 2#000001000).
--define(SCCP_SSN_EIR, 2#000001001).
--define(SCCP_SSN_AUC, 2#000001010).
--define(SCCP_SSN_ISDN_SS, 2#000001011).
--define(SCCP_SSN_RES_NAT, 2#000001100).
--define(SCCP_SSN_BISDN, 2#000001101).
--define(SCCP_SSN_TC_TEST, 2#000001110).
-
-
-
-% a single parsed SCCP message
--record(sccp_msg, {
- msg_type,
- parameters
- }).
-
-
-% a primitive how it is used inside the SCCP stack and to the user
--record(primitive, {
- subsystem,
- gen_name,
- spec_name,
- parameters
- }).
-
--record(global_title, {
- gti,
- nature_of_addr_ind,
- trans_type,
- encoding,
- numbering_plan,
- phone_number
- }).
-
--record(sccp_addr, {
- res_nat_use,
- route_on_ssn,
- point_code, % optional
- ssn, % optional
- global_title % optional
- }).
-
diff --git a/src/sccp_masq.erl b/src/sccp_masq.erl
deleted file mode 100644
index 2739307..0000000
--- a/src/sccp_masq.erl
+++ /dev/null
@@ -1,132 +0,0 @@
-% ITU-T Q.71x SCCP UDT stateful masquerading
-
-% (C) 2011 by Harald Welte <laforge@gnumonks.org>
-%
-% All Rights Reserved
-%
-% This program is free software; you can redistribute it and/or modify
-% it under the terms of the GNU Affero General Public License as
-% published by the Free Software Foundation; either version 3 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 Affero General Public License
-% along with this program. If not, see <http://www.gnu.org/licenses/>.
-
--module(sccp_masq).
--author('Harald Welte <laforge@gnumonks.org>').
--include("sccp.hrl").
-
--export([sccp_masq_msg/3, init/0, reset/0]).
-
--compile([export_all]).
-
--record(sccp_masq_rec, {
- digits_in, % list of GT digits
- digits_out, % list of GT digits
- last_access % timestamp of last usage
- }).
-
-% alloc + insert a new masquerade state record in our tables
-masq_alloc(DigitsOrig) ->
- {ok, Base} = application:get_env(sccp_masq_gt_base),
- {ok, Max} = application:get_env(sccp_masq_gt_max),
- masq_try_alloc(DigitsOrig, Base, Max, 0).
-masq_try_alloc(_DigitsOrig, _Base, Max, Offset) when Offset > Max ->
- undef;
-masq_try_alloc(DigitsOrig, Base, Max, Offset) ->
- Try = Base + Offset,
- EtsRet = ets:insert_new(get(sccp_masq_orig),
- #sccp_masq_rec{digits_in = DigitsOrig,
- digits_out = Try}),
- case EtsRet of
- false ->
- masq_try_alloc(DigitsOrig, Base, Max, Offset+1);
- _ ->
- ets:insert(get(sccp_masq_rev),
- #sccp_masq_rec{digits_in = Try,
- digits_out = DigitsOrig}),
- Try
- end.
-
-% lookup a masqerade state record
-lookup_masq_addr(orig, GtDigits) ->
- case ets:lookup(get(sccp_masq_orig), GtDigits) of
- [#sccp_masq_rec{digits_out = DigitsOut}] ->
- DigitsOut;
- _ ->
- % allocate a new masq GT
- masq_alloc(GtDigits)
- end;
-lookup_masq_addr(rev, GtDigits) ->
- case ets:lookup(get(sccp_masq_rev), GtDigits) of
- [#sccp_masq_rec{digits_out = DigitsOut}] ->
- DigitsOut;
- _ ->
- % we do not allocate entries in the reverse direction
- undef
- end.
-
-
-% Masquerade the CALLING address in first STP(G-MSC) -> HLR/VLR/MSC dir
-mangle_rx_calling(from_stp, Addr = #sccp_addr{global_title = GT}) ->
- GtOrig = GT#global_title.phone_number,
- GtReplace = lookup_masq_addr(orig, GtOrig),
- case GtReplace of
- undef ->
- io:format("SCCP MASQ: Unable to rewrite in original direction (out of GT addrs?)~n"),
- Addr;
- _ ->
- io:format("SCCP MASQ (STP->MSC) rewrite ~p->~p~n", [GtOrig, GtReplace]),
- GTout = GT#global_title{phone_number = GtReplace},
- Addr#sccp_addr{global_title = GTout}
- end;
-mangle_rx_calling(_From, Addr) ->
- Addr.
-
-mangle_rx_called(from_msc, Addr = #sccp_addr{global_title = GT}) ->
- GtOrig = GT#global_title.phone_number,
- GtReplace = lookup_masq_addr(rev, GtOrig),
- case GtReplace of
- undef ->
- io:format("SCCP MASQ: Unable to rewrite in original direction (unknown GT ~p)~n", [GT]),
- Addr;
- _ ->
- io:format("SCCP MASQ (MSC->STP) rewrite ~p->~p~n", [GtOrig, GtReplace]),
- GTout = GT#global_title{phone_number = GtReplace},
- Addr#sccp_addr{global_title = GTout}
- end;
-mangle_rx_called(_From, Addr) ->
- Addr.
-
-
-sccp_masq_msg(From, ?SCCP_MSGT_UDT, Msg = #sccp_msg{parameters = Opts}) ->
- CalledParty = proplists:get_value(called_party_addr, Opts),
- CalledPartyNew = mangle_rx_called(From, CalledParty),
- CallingParty = proplists:get_value(calling_party_addr, Opts),
- CallingPartyNew = mangle_rx_calling(From, CallingParty),
- Opts1 = lists:keyreplace(called_party_addr, 1, Opts,
- {called_party_addr, CalledPartyNew}),
- Opts2 = lists:keyreplace(calling_party_addr, 1, Opts1,
- {calling_party_addr, CallingPartyNew}),
- Msg#sccp_msg{parameters = Opts2};
-sccp_masq_msg(_From, _MsgType, Msg) ->
- Msg.
-
-init() ->
- Orig = ets:new(sccp_masq_orig, [ordered_set,
- {keypos, #sccp_masq_rec.digits_in}]),
- Rev = ets:new(sccp_masq_rev, [ordered_set,
- {keypos, #sccp_masq_rec.digits_in}]),
- put(sccp_masq_orig, Orig),
- put(sccp_masq_rev, Rev),
- ok.
-
-reset() ->
- io:format("SCCP MASQ: Deleting all MASQ state records~n"),
- ets:delete_all_objects(get(sccp_masq_orig)),
- ets:delete_all_objects(get(sccp_masq_rev)).
diff --git a/src/sccp_user.erl b/src/sccp_user.erl
deleted file mode 100644
index 0871b98..0000000
--- a/src/sccp_user.erl
+++ /dev/null
@@ -1,80 +0,0 @@
-
-% (C) 2010 by Harald Welte <laforge@gnumonks.org>
-%
-% All Rights Reserved
-%
-% This program is free software; you can redistribute it and/or modify
-% it under the terms of the GNU Affero General Public License as
-% published by the Free Software Foundation; either version 3 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 Affero General Public License
-% along with this program. If not, see <http://www.gnu.org/licenses/>.
-
--module(sccp_user).
--author('Harald Welte <laforge@gnumonks.org>').
--export([init/3]).
-
--include("sccp.hrl").
-
--define(IPA_STREAM_ID_SCCP, 253).
-
--record(loop_data, {
- ipa_stream_id
- }).
-
-init(TcpServerPort, IpaStreamId, Opts) ->
- ipa_proto:init(),
- % Create listening IPA socket
- ipa_proto:start_listen(TcpServerPort, 1, Opts),
- loop(#loop_data{ipa_stream_id = IpaStreamId}).
-
-% callback function to be called by IPA socket handler if it receives some data
-sccp_ipa_adapter_cb(S, IpaStreamID, DataBin, [ScrcPid]) ->
- io:format("sccp_ipa_adapter_cb (Socket ~p, Stream ~p), passing data to SCRP~n", [S, IpaStreamID]),
- % hand any incoming IPA message off into the SCCP stacks SCRC
- gen_fsm:send_event(ScrcPid, sccp_scoc:make_prim('MTP', 'TRANSFER', indication, DataBin)).
-
-% callback function to be called by SCCP if it wants to transmit some data
-sccp_to_ipa_cb(#primitive{subsystem = 'MTP', gen_name = 'TRANSFER',
- spec_name = request, parameters = DataBin}, [IpaPid, S, IpaStreamID]) ->
- %ipa_proto:send(S, IpaStreamID, DataBin).
- io:format("sccp_to_ipa_cb: Sending to ~p ~p/~p: ~p~n", [IpaPid, S,IpaStreamID, DataBin]),
- IpaPid ! {ipa_send, S, IpaStreamID, DataBin}.
-
-loop(LoopData) ->
- receive
- {ipa_tcp_accept, S} ->
- io:format("sccp_ipa_adapter: ipa_tcp_accept from ~p~n", [inet:peername(S)]),
- IpaStreamId = LoopData#loop_data.ipa_stream_id,
- % hand over the socket into the IPA stack
- {ok, IpaPid} = ipa_proto:register_socket(S),
- % Start the SCRC FSM for this virtual MTP link
- ScrcMtpCb = {callback_fn, fun sccp_to_ipa_cb/2, [IpaPid, S, IpaStreamId]},
- {ok, ScrcPid} = sccp_scrc:start_link([{mtp_tx_action, ScrcMtpCb}]),
- % Register an IPA stream for SCCP
- ipa_proto:register_stream(S, IpaStreamId,
- {callback_fn, fun sccp_ipa_adapter_cb/4, [ScrcPid]}),
- ipa_proto:unblock(S),
- loop(LoopData);
- % this code should later be moved into the actual MSC
- {sccp, Prim} ->
- io:format("sccp_user has received primitive ~p~n", [Prim]),
- handle_sccp_prim(Prim),
- loop(LoopData)
- end.
-
-
-handle_sccp_prim(#primitive{subsystem = 'N', gen_name = 'CONNECT',
- spec_name = indication, parameters = Params}) ->
- %RespPrim = Prim#primitive{spec_name = response},
- RespPrim = sccp_scoc:make_prim('N', 'CONNECT', response, []),
- ScocPid = proplists:get_value(scoc_pid, Params),
- gen_fsm:send_event(ScocPid, RespPrim);
-handle_sccp_prim(#primitive{}) ->
- ok.