133 lines
4.5 KiB
Erlang
133 lines
4.5 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : mod_vcard_xupdate.erl
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%%% Author : Igor Goryachev <igor@goryachev.org>
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%%% Purpose : Add avatar hash in presence on behalf of client (XEP-0153)
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%%% Created : 9 Mar 2007 by Igor Goryachev <igor@goryachev.org>
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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_vcard_xupdate).
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-behaviour(gen_mod).
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%% gen_mod callbacks
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-export([start/2, stop/1]).
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-export([update_presence/3, vcard_set/3, export/1,
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import_info/0, import/5, import_start/2,
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mod_opt_type/1, depends/2]).
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-include("ejabberd.hrl").
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-include("logger.hrl").
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-include("xmpp.hrl").
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-callback init(binary(), gen_mod:opts()) -> any().
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-callback import(binary(), binary(), [binary()]) -> ok.
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-callback add_xupdate(binary(), binary(), binary()) -> {atomic, any()}.
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-callback get_xupdate(binary(), binary()) -> binary() | undefined.
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-callback remove_xupdate(binary(), binary()) -> {atomic, any()}.
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%%====================================================================
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%% gen_mod callbacks
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%%====================================================================
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start(Host, Opts) ->
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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(c2s_update_presence, Host, ?MODULE,
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update_presence, 100),
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ejabberd_hooks:add(vcard_set, Host, ?MODULE, vcard_set,
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100),
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ok.
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stop(Host) ->
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ejabberd_hooks:delete(c2s_update_presence, Host,
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?MODULE, update_presence, 100),
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ejabberd_hooks:delete(vcard_set, Host, ?MODULE,
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vcard_set, 100),
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ok.
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depends(_Host, _Opts) ->
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[].
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%%====================================================================
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%% Hooks
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%%====================================================================
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-spec update_presence(presence(), binary(), binary()) -> presence().
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update_presence(#presence{type = available} = Packet, User, Host) ->
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presence_with_xupdate(Packet, User, Host);
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update_presence(Packet, _User, _Host) -> Packet.
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-spec vcard_set(binary(), binary(), xmlel()) -> ok.
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vcard_set(LUser, LServer, VCARD) ->
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US = {LUser, LServer},
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case fxml:get_path_s(VCARD,
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[{elem, <<"PHOTO">>}, {elem, <<"BINVAL">>}, cdata])
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of
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<<>> -> remove_xupdate(LUser, LServer);
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BinVal ->
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add_xupdate(LUser, LServer,
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p1_sha:sha(jlib:decode_base64(BinVal)))
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end,
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ejabberd_sm:force_update_presence(US).
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%%====================================================================
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%% Storage
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%%====================================================================
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add_xupdate(LUser, LServer, Hash) ->
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Mod = gen_mod:db_mod(LServer, ?MODULE),
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Mod:add_xupdate(LUser, LServer, Hash).
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get_xupdate(LUser, LServer) ->
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Mod = gen_mod:db_mod(LServer, ?MODULE),
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Mod:get_xupdate(LUser, LServer).
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remove_xupdate(LUser, LServer) ->
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Mod = gen_mod:db_mod(LServer, ?MODULE),
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Mod:remove_xupdate(LUser, LServer).
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%%%----------------------------------------------------------------------
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%%% Presence stanza rebuilding
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%%%----------------------------------------------------------------------
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presence_with_xupdate(Presence, User, Host) ->
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Hash = get_xupdate(User, Host),
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Presence1 = xmpp:remove_subtag(Presence, #vcard_xupdate{}),
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xmpp:set_subtag(Presence1, #vcard_xupdate{hash = Hash}).
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import_info() ->
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[{<<"vcard_xupdate">>, 3}].
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import_start(LServer, DBType) ->
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Mod = gen_mod:db_mod(DBType, ?MODULE),
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Mod:init(LServer, []).
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import(LServer, {sql, _}, DBType, Tab, [LUser, Hash, TimeStamp]) ->
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Mod = gen_mod:db_mod(DBType, ?MODULE),
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Mod:import(LServer, Tab, [LUser, Hash, TimeStamp]).
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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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mod_opt_type(db_type) -> fun(T) -> ejabberd_config:v_db(?MODULE, T) end;
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mod_opt_type(_) -> [db_type].
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