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-rw-r--r--src/mod_last_odbc.erl204
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diff --git a/src/mod_last_odbc.erl b/src/mod_last_odbc.erl
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--- a/src/mod_last_odbc.erl
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-%%%----------------------------------------------------------------------
-%%% File : mod_last_odbc.erl
-%%% Author : Alexey Shchepin <alexey@process-one.net>
-%%% Purpose : jabber:iq:last support (XEP-0012)
-%%% Created : 24 Oct 2003 by Alexey Shchepin <alexey@process-one.net>
-%%%
-%%%
-%%% ejabberd, Copyright (C) 2002-2012 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., 59 Temple Place, Suite 330, Boston, MA
-%%% 02111-1307 USA
-%%%
-%%%----------------------------------------------------------------------
-
--module(mod_last_odbc).
--author('alexey@process-one.net').
-
--behaviour(gen_mod).
-
--export([start/2,
- stop/1,
- process_local_iq/3,
- process_sm_iq/3,
- on_presence_update/4,
- store_last_info/4,
- get_last_info/2,
- remove_user/2]).
-
--include("ejabberd.hrl").
--include("jlib.hrl").
--include("mod_privacy.hrl").
-
-start(Host, Opts) ->
- IQDisc = gen_mod:get_opt(iqdisc, Opts, one_queue),
- gen_iq_handler:add_iq_handler(ejabberd_local, Host, ?NS_LAST,
- ?MODULE, process_local_iq, IQDisc),
- gen_iq_handler:add_iq_handler(ejabberd_sm, Host, ?NS_LAST,
- ?MODULE, process_sm_iq, IQDisc),
- ejabberd_hooks:add(remove_user, Host,
- ?MODULE, remove_user, 50),
- ejabberd_hooks:add(unset_presence_hook, Host,
- ?MODULE, on_presence_update, 50).
-
-stop(Host) ->
- ejabberd_hooks:delete(remove_user, Host,
- ?MODULE, remove_user, 50),
- ejabberd_hooks:delete(unset_presence_hook, Host,
- ?MODULE, on_presence_update, 50),
- gen_iq_handler:remove_iq_handler(ejabberd_local, Host, ?NS_LAST),
- gen_iq_handler:remove_iq_handler(ejabberd_sm, Host, ?NS_LAST).
-
-%%%
-%%% Uptime of ejabberd node
-%%%
-
-process_local_iq(_From, _To, #iq{type = Type, sub_el = SubEl} = IQ) ->
- case Type of
- set ->
- IQ#iq{type = error, sub_el = [SubEl, ?ERR_NOT_ALLOWED]};
- get ->
- Sec = get_node_uptime(),
- IQ#iq{type = result,
- sub_el = [{xmlelement, "query",
- [{"xmlns", ?NS_LAST},
- {"seconds", integer_to_list(Sec)}],
- []}]}
- end.
-
-%% @spec () -> integer()
-%% @doc Get the uptime of the ejabberd node, expressed in seconds.
-%% When ejabberd is starting, ejabberd_config:start/0 stores the datetime.
-get_node_uptime() ->
- case ejabberd_config:get_local_option(node_start) of
- {_, _, _} = StartNow ->
- now_to_seconds(now()) - now_to_seconds(StartNow);
- _undefined ->
- trunc(element(1, erlang:statistics(wall_clock))/1000)
- end.
-
-now_to_seconds({MegaSecs, Secs, _MicroSecs}) ->
- MegaSecs * 1000000 + Secs.
-
-
-%%%
-%%% Serve queries about user last online
-%%%
-process_sm_iq(From, To, #iq{type = Type, sub_el = SubEl} = IQ) ->
- case Type of
- set ->
- IQ#iq{type = error, sub_el = [SubEl, ?ERR_NOT_ALLOWED]};
- get ->
- User = To#jid.luser,
- Server = To#jid.lserver,
- {Subscription, _Groups} =
- ejabberd_hooks:run_fold(
- roster_get_jid_info, Server,
- {none, []}, [User, Server, From]),
- if
- (Subscription == both) or (Subscription == from) ->
- UserListRecord = ejabberd_hooks:run_fold(
- privacy_get_user_list, Server,
- #userlist{},
- [User, Server]),
- case ejabberd_hooks:run_fold(
- privacy_check_packet, Server,
- allow,
- [User, Server, UserListRecord,
- {To, From,
- {xmlelement, "presence", [], []}},
- out]) of
- allow ->
- get_last_iq(IQ, SubEl, User, Server);
- deny ->
- IQ#iq{type = error,
- sub_el = [SubEl, ?ERR_FORBIDDEN]}
- end;
- true ->
- IQ#iq{type = error,
- sub_el = [SubEl, ?ERR_FORBIDDEN]}
- end
- end.
-
-%% @spec (LUser::string(), LServer::string()) ->
-%% {ok, TimeStamp::integer(), Status::string()} | not_found | {error, Reason}
-get_last(LUser, LServer) ->
- Username = ejabberd_odbc:escape(LUser),
- case catch odbc_queries:get_last(LServer, Username) of
- {selected, ["seconds","state"], []} ->
- not_found;
- {selected, ["seconds","state"], [{STimeStamp, Status}]} ->
- case catch list_to_integer(STimeStamp) of
- TimeStamp when is_integer(TimeStamp) ->
- {ok, TimeStamp, Status};
- Reason ->
- {error, {invalid_timestamp, Reason}}
- end;
- Reason ->
- {error, {invalid_result, Reason}}
- end.
-
-get_last_iq(IQ, SubEl, LUser, LServer) ->
- case ejabberd_sm:get_user_resources(LUser, LServer) of
- [] ->
- case get_last(LUser, LServer) of
- {error, _Reason} ->
- IQ#iq{type = error, sub_el = [SubEl, ?ERR_INTERNAL_SERVER_ERROR]};
- not_found ->
- IQ#iq{type = error, sub_el = [SubEl, ?ERR_SERVICE_UNAVAILABLE]};
- {ok, TimeStamp, Status} ->
- TimeStamp2 = now_to_seconds(now()),
- Sec = TimeStamp2 - TimeStamp,
- IQ#iq{type = result,
- sub_el = [{xmlelement, "query",
- [{"xmlns", ?NS_LAST},
- {"seconds", integer_to_list(Sec)}],
- [{xmlcdata, Status}]}]}
- end;
- _ ->
- IQ#iq{type = result,
- sub_el = [{xmlelement, "query",
- [{"xmlns", ?NS_LAST},
- {"seconds", "0"}],
- []}]}
- end.
-
-on_presence_update(User, Server, _Resource, Status) ->
- TimeStamp = now_to_seconds(now()),
- store_last_info(User, Server, TimeStamp, Status).
-
-store_last_info(User, Server, TimeStamp, Status) ->
- LUser = jlib:nodeprep(User),
- LServer = jlib:nameprep(Server),
- Username = ejabberd_odbc:escape(LUser),
- Seconds = ejabberd_odbc:escape(integer_to_list(TimeStamp)),
- State = ejabberd_odbc:escape(Status),
- odbc_queries:set_last_t(LServer, Username, Seconds, State).
-
-%% @spec (LUser::string(), LServer::string()) ->
-%% {ok, TimeStamp::integer(), Status::string()} | not_found
-get_last_info(LUser, LServer) ->
- case get_last(LUser, LServer) of
- {error, _Reason} ->
- not_found;
- Res ->
- Res
- end.
-
-remove_user(User, Server) ->
- LUser = jlib:nodeprep(User),
- LServer = jlib:nameprep(Server),
- Username = ejabberd_odbc:escape(LUser),
- odbc_queries:del_last(LServer, Username).
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