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xmpp.chapril.org-ejabberd/src/mod_version.erl

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%%%----------------------------------------------------------------------
%%% File : mod_version.erl
%%% Author : Alexey Shchepin <alexey@process-one.net>
%%% Purpose : XEP-0092: Software Version
%%% Created : 18 Jan 2003 by Alexey Shchepin <alexey@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2021 ProcessOne
%%%
%%% This program is free software; you can redistribute it and/or
%%% modify it under the terms of the GNU General Public License as
%%% published by the Free Software Foundation; either version 2 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.
%%%
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%%% You should have received a copy of the GNU General Public License along
%%% with this program; if not, write to the Free Software Foundation, Inc.,
%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
%%%
%%%----------------------------------------------------------------------
-module(mod_version).
-author('alexey@process-one.net').
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-protocol({xep, 92, '1.1'}).
-behaviour(gen_mod).
-export([start/2, stop/1, reload/3, process_local_iq/1,
mod_opt_type/1, mod_options/1, depends/2, mod_doc/0]).
-include("logger.hrl").
-include_lib("xmpp/include/xmpp.hrl").
-include("translate.hrl").
start(Host, _Opts) ->
gen_iq_handler:add_iq_handler(ejabberd_local, Host,
?NS_VERSION, ?MODULE, process_local_iq).
stop(Host) ->
gen_iq_handler:remove_iq_handler(ejabberd_local, Host,
?NS_VERSION).
reload(_Host, _NewOpts, _OldOpts) ->
ok.
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process_local_iq(#iq{type = set, lang = Lang} = IQ) ->
Txt = ?T("Value 'set' of 'type' attribute is not allowed"),
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xmpp:make_error(IQ, xmpp:err_not_allowed(Txt, Lang));
process_local_iq(#iq{type = get, to = To} = IQ) ->
Host = To#jid.lserver,
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OS = case mod_version_opt:show_os(Host) of
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true -> get_os();
false -> undefined
end,
xmpp:make_iq_result(IQ, #version{name = <<"ejabberd">>,
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ver = ejabberd_option:version(),
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os = OS}).
get_os() ->
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{Osfamily, Osname} = os:type(),
OSType = list_to_binary([atom_to_list(Osfamily), $/, atom_to_list(Osname)]),
OSVersion = case os:version() of
{Major, Minor, Release} ->
(str:format("~w.~w.~w",
[Major, Minor, Release]));
VersionString -> VersionString
end,
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<<OSType/binary, " ", OSVersion/binary>>.
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depends(_Host, _Opts) ->
[].
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mod_opt_type(show_os) ->
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econf:bool().
mod_options(_Host) ->
[{show_os, true}].
mod_doc() ->
#{desc =>
?T("This module implements "
"https://xmpp.org/extensions/xep-0092.html"
"[XEP-0092: Software Version]. Consequently, "
"it answers ejabberd's version when queried."),
opts =>
[{show_os,
#{value => "true | false",
desc =>
?T("Should the operating system be revealed or not. "
"The default value is 'true'.")}}]}.