%%%----------------------------------------------------------------------
%%% 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) 2002-2017 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.
%%%
%%% 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').
-protocol({xep, 92, '1.1'}).
-behaviour(gen_mod).
-export([start/2, stop/1, reload/3, process_local_iq/1,
mod_opt_type/1, depends/2]).
-include("ejabberd.hrl").
-include("logger.hrl").
-include("xmpp.hrl").
start(Host, Opts) ->
IQDisc = gen_mod:get_opt(iqdisc, Opts, gen_iq_handler:iqdisc(Host)),
gen_iq_handler:add_iq_handler(ejabberd_local, Host,
?NS_VERSION, ?MODULE, process_local_iq,
IQDisc).
stop(Host) ->
gen_iq_handler:remove_iq_handler(ejabberd_local, Host,
?NS_VERSION).
reload(Host, NewOpts, OldOpts) ->
case gen_mod:is_equal_opt(iqdisc, NewOpts, OldOpts, gen_iq_handler:iqdisc(Host)) of
{false, IQDisc, _} ->
gen_iq_handler:add_iq_handler(ejabberd_local, Host, ?NS_VERSION,
?MODULE, process_local_iq, IQDisc);
true ->
ok
end.
process_local_iq(#iq{type = set, lang = Lang} = IQ) ->
Txt = <<"Value 'set' of 'type' attribute is not allowed">>,
xmpp:make_error(IQ, xmpp:err_not_allowed(Txt, Lang));
process_local_iq(#iq{type = get, to = To} = IQ) ->
Host = To#jid.lserver,
OS = case gen_mod:get_module_opt(Host, ?MODULE, show_os, true) of
true -> get_os();
false -> undefined
end,
xmpp:make_iq_result(IQ, #version{name = <<"ejabberd">>,
ver = ?VERSION,
os = OS}).
get_os() ->
{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,
<<OSType/binary, " ", OSVersion/binary>>.
depends(_Host, _Opts) ->
[].
mod_opt_type(iqdisc) -> fun gen_iq_handler:check_type/1;
mod_opt_type(show_os) ->
fun (B) when is_boolean(B) -> B end;
mod_opt_type(_) -> [iqdisc, show_os].
