110 lines
4.1 KiB
Erlang
110 lines
4.1 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : mod_sic.erl
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%%% Author : Karim Gemayel <karim.gemayel@process-one.net>
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%%% Purpose : XEP-0279 Server IP Check
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%%% Created : 6 Mar 2010 by Karim Gemayel <karim.gemayel@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2020 ProcessOne
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%%%
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%%% This program is free software; you can redistribute it and/or
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%%% modify it under the terms of the GNU General Public License as
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%%% published by the Free Software Foundation; either version 2 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 GNU
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%%% General Public License for more details.
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%%%
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%%% You should have received a copy of the GNU General Public License along
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%%% with this program; if not, write to the Free Software Foundation, Inc.,
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%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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%%%
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%%%----------------------------------------------------------------------
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-module(mod_sic).
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-protocol({xep, 279, '0.2'}).
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-author('karim.gemayel@process-one.net').
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-behaviour(gen_mod).
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-export([start/2, stop/1, reload/3, process_local_iq/1,
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process_sm_iq/1, mod_options/1, depends/2, mod_doc/0]).
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-include("logger.hrl").
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-include_lib("xmpp/include/xmpp.hrl").
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-include("translate.hrl").
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start(Host, _Opts) ->
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gen_iq_handler:add_iq_handler(ejabberd_local, Host, ?NS_SIC_0,
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?MODULE, process_local_iq),
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gen_iq_handler:add_iq_handler(ejabberd_sm, Host, ?NS_SIC_0,
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?MODULE, process_sm_iq),
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gen_iq_handler:add_iq_handler(ejabberd_local, Host, ?NS_SIC_1,
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?MODULE, process_local_iq),
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gen_iq_handler:add_iq_handler(ejabberd_sm, Host, ?NS_SIC_1,
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?MODULE, process_sm_iq).
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stop(Host) ->
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gen_iq_handler:remove_iq_handler(ejabberd_local, Host, ?NS_SIC_0),
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gen_iq_handler:remove_iq_handler(ejabberd_sm, Host, ?NS_SIC_0),
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gen_iq_handler:remove_iq_handler(ejabberd_local, Host, ?NS_SIC_1),
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gen_iq_handler:remove_iq_handler(ejabberd_sm, Host, ?NS_SIC_1).
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reload(_Host, _NewOpts, _OldOpts) ->
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ok.
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depends(_Host, _Opts) ->
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[].
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process_local_iq(#iq{from = #jid{user = User, server = Server,
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resource = Resource},
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type = get} = IQ) ->
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get_ip({User, Server, Resource}, IQ);
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process_local_iq(#iq{type = set, lang = Lang} = IQ) ->
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Txt = ?T("Value 'set' of 'type' attribute is not allowed"),
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xmpp:make_error(IQ, xmpp:err_not_allowed(Txt, Lang)).
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process_sm_iq(#iq{from = #jid{user = User, server = Server,
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resource = Resource},
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to = #jid{user = User, server = Server},
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type = get} = IQ) ->
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get_ip({User, Server, Resource}, IQ);
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process_sm_iq(#iq{type = get, lang = Lang} = IQ) ->
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Txt = ?T("Query to another users is forbidden"),
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xmpp:make_error(IQ, xmpp:err_forbidden(Txt, Lang));
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process_sm_iq(#iq{type = set, lang = Lang} = IQ) ->
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Txt = ?T("Value 'set' of 'type' attribute is not allowed"),
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xmpp:make_error(IQ, xmpp:err_not_allowed(Txt, Lang)).
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get_ip({User, Server, Resource},
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#iq{lang = Lang, sub_els = [#sic{xmlns = NS}]} = IQ) ->
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case ejabberd_sm:get_user_ip(User, Server, Resource) of
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{IP, Port} when is_tuple(IP) ->
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Result = case NS of
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?NS_SIC_0 -> #sic{ip = IP, xmlns = NS};
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?NS_SIC_1 -> #sic{ip = IP, port = Port, xmlns = NS}
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end,
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xmpp:make_iq_result(IQ, Result);
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_ ->
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Txt = ?T("User session not found"),
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xmpp:make_error(IQ, xmpp:err_item_not_found(Txt, Lang))
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end.
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mod_options(_Host) ->
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[].
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mod_doc() ->
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#{desc =>
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[?T("This module adds support for "
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"https://xmpp.org/extensions/xep-0279.html"
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"[XEP-0279: Server IP Check]. This protocol enables "
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"a client to discover its external IP address."), "",
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?T("WARNING: The protocol extension is deferred and seems "
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"like there are no clients supporting it, so using this "
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"module is not recommended and, furthermore, the module "
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"might be removed in the future.")]}.
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