mirror of
https://github.com/processone/ejabberd.git
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182 lines
5.9 KiB
Erlang
182 lines
5.9 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : mod_private.erl
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%%% Author : Alexey Shchepin <alexey@process-one.net>
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%%% Purpose : Support for private storage.
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%%% Created : 16 Jan 2003 by Alexey Shchepin <alexey@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2016 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_private).
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-author('alexey@process-one.net').
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-protocol({xep, 49, '1.2'}).
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-behaviour(gen_mod).
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-export([start/2, stop/1, process_sm_iq/3, import/3,
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remove_user/2, get_data/2, export/1, import/1,
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mod_opt_type/1, set_data/3, depends/2]).
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-include("ejabberd.hrl").
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-include("logger.hrl").
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-include("jlib.hrl").
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-include("mod_private.hrl").
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-callback init(binary(), gen_mod:opts()) -> any().
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-callback import(binary(), #private_storage{}) -> ok | pass.
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-callback set_data(binary(), binary(), [{binary(), xmlel()}]) -> {atomic, any()}.
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-callback get_data(binary(), binary(), binary()) -> {ok, xmlel()} | error.
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-callback get_all_data(binary(), binary()) -> [xmlel()].
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-define(Xmlel_Query(Attrs, Children),
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#xmlel{name = <<"query">>, attrs = Attrs,
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children = Children}).
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start(Host, Opts) ->
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IQDisc = gen_mod:get_opt(iqdisc, Opts, fun gen_iq_handler:check_type/1,
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one_queue),
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Mod = gen_mod:db_mod(Host, Opts, ?MODULE),
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Mod:init(Host, Opts),
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ejabberd_hooks:add(remove_user, Host, ?MODULE,
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remove_user, 50),
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gen_iq_handler:add_iq_handler(ejabberd_sm, Host,
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?NS_PRIVATE, ?MODULE, process_sm_iq, IQDisc).
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stop(Host) ->
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ejabberd_hooks:delete(remove_user, Host, ?MODULE,
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remove_user, 50),
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gen_iq_handler:remove_iq_handler(ejabberd_sm, Host,
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?NS_PRIVATE).
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process_sm_iq(#jid{luser = LUser, lserver = LServer},
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#jid{luser = LUser, lserver = LServer}, #iq{lang = Lang} = IQ)
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when IQ#iq.type == set ->
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case IQ#iq.sub_el of
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#xmlel{name = <<"query">>, children = Xmlels} ->
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case filter_xmlels(Xmlels) of
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[] ->
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Txt = <<"No private data found in this query">>,
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IQ#iq{type = error,
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sub_el = [IQ#iq.sub_el, ?ERRT_NOT_ACCEPTABLE(Lang, Txt)]};
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Data ->
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set_data(LUser, LServer, Data),
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IQ#iq{type = result, sub_el = []}
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end;
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_ ->
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Txt = <<"No query found">>,
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IQ#iq{type = error,
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sub_el = [IQ#iq.sub_el, ?ERRT_NOT_ACCEPTABLE(Lang, Txt)]}
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end;
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%%
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process_sm_iq(#jid{luser = LUser, lserver = LServer},
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#jid{luser = LUser, lserver = LServer}, #iq{lang = Lang} = IQ)
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when IQ#iq.type == get ->
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case IQ#iq.sub_el of
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#xmlel{name = <<"query">>, attrs = Attrs,
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children = Xmlels} ->
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case filter_xmlels(Xmlels) of
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[] ->
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Txt = <<"No private data found in this query">>,
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IQ#iq{type = error,
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sub_el = [IQ#iq.sub_el, ?ERRT_BAD_FORMAT(Lang, Txt)]};
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Data ->
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case catch get_data(LUser, LServer, Data) of
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{'EXIT', _Reason} ->
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Txt = <<"Database failure">>,
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IQ#iq{type = error,
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sub_el =
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[IQ#iq.sub_el, ?ERRT_INTERNAL_SERVER_ERROR(Lang, Txt)]};
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Storage_Xmlels ->
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IQ#iq{type = result,
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sub_el = [?Xmlel_Query(Attrs, Storage_Xmlels)]}
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end
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end;
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_ ->
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Txt = <<"No query found">>,
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IQ#iq{type = error,
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sub_el = [IQ#iq.sub_el, ?ERRT_BAD_FORMAT(Lang, Txt)]}
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end;
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%%
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process_sm_iq(_From, _To, #iq{lang = Lang} = IQ) ->
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Txt = <<"Query to another users is forbidden">>,
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IQ#iq{type = error,
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sub_el = [IQ#iq.sub_el, ?ERRT_FORBIDDEN(Lang, Txt)]}.
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filter_xmlels(Xmlels) -> filter_xmlels(Xmlels, []).
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filter_xmlels([], Data) -> lists:reverse(Data);
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filter_xmlels([#xmlel{attrs = Attrs} = Xmlel | Xmlels],
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Data) ->
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case fxml:get_attr_s(<<"xmlns">>, Attrs) of
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<<"">> -> [];
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XmlNS -> filter_xmlels(Xmlels, [{XmlNS, Xmlel} | Data])
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end;
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filter_xmlels([_ | Xmlels], Data) ->
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filter_xmlels(Xmlels, Data).
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set_data(LUser, LServer, Data) ->
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Mod = gen_mod:db_mod(LServer, ?MODULE),
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Mod:set_data(LUser, LServer, Data).
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get_data(LUser, LServer, Data) ->
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Mod = gen_mod:db_mod(LServer, ?MODULE),
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get_data(LUser, LServer, Data, Mod, []).
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get_data(_LUser, _LServer, [], _Mod, Storage_Xmlels) ->
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lists:reverse(Storage_Xmlels);
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get_data(LUser, LServer, [{XmlNS, Xmlel} | Data], Mod, Storage_Xmlels) ->
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case Mod:get_data(LUser, LServer, XmlNS) of
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{ok, Storage_Xmlel} ->
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get_data(LUser, LServer, Data, Mod, [Storage_Xmlel | Storage_Xmlels]);
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error ->
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get_data(LUser, LServer, Data, Mod, [Xmlel | Storage_Xmlels])
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end.
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get_data(LUser, LServer) ->
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Mod = gen_mod:db_mod(LServer, ?MODULE),
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Mod:get_all_data(LUser, LServer).
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remove_user(User, Server) ->
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LUser = jid:nodeprep(User),
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LServer = jid:nameprep(Server),
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Mod = gen_mod:db_mod(Server, ?MODULE),
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Mod:remove_user(LUser, LServer).
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export(LServer) ->
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Mod = gen_mod:db_mod(LServer, ?MODULE),
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Mod:export(LServer).
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import(LServer) ->
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Mod = gen_mod:db_mod(LServer, ?MODULE),
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Mod:import(LServer).
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import(LServer, DBType, PD) ->
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Mod = gen_mod:db_mod(DBType, ?MODULE),
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Mod:import(LServer, PD).
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depends(_Host, _Opts) ->
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[].
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mod_opt_type(db_type) -> fun(T) -> ejabberd_config:v_db(?MODULE, T) end;
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mod_opt_type(iqdisc) -> fun gen_iq_handler:check_type/1;
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mod_opt_type(_) -> [db_type, iqdisc].
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