67 lines
2.5 KiB
Erlang
67 lines
2.5 KiB
Erlang
% BOW-ONW specific mgw_nat actor callback functions
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% (C) 2011 by Harald Welte <laforge@gnumonks.org>
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% (C) 2011 OnWaves
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%
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% All Rights Reserved
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%
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% This program is free software; you can redistribute it and/or modify
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% it under the terms of the GNU Affero General Public License as
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% published by the Free Software Foundation; either version 3 of the
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% License, or (at your option) any later version.
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%
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% This program is distributed in the hope that it will be useful,
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% but WITHOUT ANY WARRANTY; without even the implied warranty of
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% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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% GNU General Public License for more details.
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%
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% You should have received a copy of the GNU Affero General Public License
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% along with this program. If not, see <http://www.gnu.org/licenses/>.
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%
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% Additional Permission under GNU AGPL version 3 section 7:
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%
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% If you modify this Program, or any covered work, by linking or
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% combining it with runtime libraries of Erlang/OTP as released by
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% Ericsson on http://www.erlang.org (or a modified version of these
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% libraries), containing parts covered by the terms of the Erlang Public
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% License (http://www.erlang.org/EPLICENSE), the licensors of this
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% Program grant you additional permission to convey the resulting work
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% without the need to license the runtime libraries of Erlang/OTP under
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% the GNU Affero General Public License. Corresponding Source for a
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% non-source form of such a combination shall include the source code
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% for the parts of the runtime libraries of Erlang/OTP used as well as
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% that of the covered work.
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-module(mgw_nat_act_bow_onw).
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-author("Harald Welte <laforge@gnumonks.org>").
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-export([rewrite_actor/5, reload_config/0]).
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-include_lib("osmo_ss7/include/sccp.hrl").
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% Rewrite at SCTP (root) level:
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rewrite_actor(sctp, From, Path, 2, DataBin) ->
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mgw_nat:mangle_rx_data(From, Path, DataBin, fun rewrite_actor/5);
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% Rewrite at ISUP level:
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rewrite_actor(isup, From, Path, MsgType, IsupDec) ->
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mgw_nat:mangle_rx_isup(From, Path, MsgType, IsupDec);
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% Rewrite at SCCP level: Static GT rewrite as well as dynamic masquerading
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rewrite_actor(sccp, From, Path, MsgType, SccpDec) ->
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SccpMangled = mgw_nat:mangle_rx_sccp(From, Path, MsgType, SccpDec),
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SccpMasqued = sccp_masq:sccp_masq_msg(From, SccpMangled#sccp_msg.msg_type, SccpMangled),
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SccpMasqued;
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% Rewrite at MAP level: call into map_masq module
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rewrite_actor(map, From, _Path, 0, MapDec) ->
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map_masq:mangle_map(From, MapDec);
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% Default action: no rewrite
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rewrite_actor(_Level, _From, _Path, _MsgType, Msg) ->
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Msg.
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reload_config() ->
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ok.
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