| % BOW-ONW specific mgw_nat actor callback functions |
| |
| % (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_act_bow_onw). |
| -author("Harald Welte <laforge@gnumonks.org>"). |
| |
| -export([rewrite_actor/5, reload_config/0]). |
| |
| -include_lib("osmo_ss7/include/sccp.hrl"). |
| |
| % Rewrite at SCTP (root) level: |
| rewrite_actor(sctp, From, Path, 2, DataBin) -> |
| try mgw_nat:mangle_rx_data(From, Path, DataBin, fun rewrite_actor/5) of |
| Val -> |
| Val |
| catch error:Error -> |
| % some parser error, simply forward msg unmodified |
| io:format("MGW NAT mangling Error: ~p~n", [Error]), |
| DataBin |
| end; |
| |
| % Rewrite at ISUP level: |
| rewrite_actor(isup, From, Path, MsgType, IsupDec) -> |
| mgw_nat:mangle_rx_isup(From, Path, MsgType, IsupDec); |
| |
| % Rewrite at SCCP level: Static GT rewrite as well as dynamic masquerading |
| rewrite_actor(sccp, From, Path, MsgType, SccpDec) -> |
| SccpMangled = mgw_nat:mangle_rx_sccp(From, Path, MsgType, SccpDec), |
| SccpMasqued = sccp_masq:sccp_masq_msg(From, SccpMangled#sccp_msg.msg_type, SccpMangled), |
| SccpMasqued; |
| |
| % Rewrite at MAP level: call into map_masq module |
| rewrite_actor(map, From, _Path, 0, MapDec) -> |
| map_masq:mangle_map(From, MapDec); |
| |
| % Default action: no rewrite |
| rewrite_actor(_Level, _From, _Path, _MsgType, Msg) -> |
| Msg. |
| |
| reload_config() -> |
| ok. |