mirror of
https://github.com/processone/ejabberd.git
synced 2024-11-24 16:23:40 +01:00
116 lines
3.6 KiB
Erlang
116 lines
3.6 KiB
Erlang
%%%----------------------------------------------------------------------
|
|
%%% File : mod_vcard_xupdate.erl
|
|
%%% Author : Igor Goryachev <igor@goryachev.org>
|
|
%%% Purpose : Add avatar hash in presence on behalf of client (XEP-0153)
|
|
%%% Created : 9 Mar 2007 by Igor Goryachev <igor@goryachev.org>
|
|
%%%----------------------------------------------------------------------
|
|
|
|
-module(mod_vcard_xupdate).
|
|
|
|
-behaviour(gen_mod).
|
|
|
|
%% gen_mod callbacks
|
|
-export([start/2,
|
|
stop/1]).
|
|
|
|
%% hooks
|
|
-export([update_presence/3,
|
|
vcard_set/3]).
|
|
|
|
-include("ejabberd.hrl").
|
|
-include_lib("exmpp/include/exmpp.hrl").
|
|
|
|
-record(vcard_xupdate, {us, hash}).
|
|
|
|
%%====================================================================
|
|
%% gen_mod callbacks
|
|
%%====================================================================
|
|
|
|
start(Host, Opts) when is_list(Host) ->
|
|
start(list_to_binary(Host), Opts);
|
|
start(HostB, _Opts) ->
|
|
mnesia:create_table(vcard_xupdate,
|
|
[{disc_copies, [node()]},
|
|
{attributes, record_info(fields, vcard_xupdate)}]),
|
|
ejabberd_hooks:add(c2s_update_presence, HostB,
|
|
?MODULE, update_presence, 100),
|
|
ejabberd_hooks:add(vcard_set, HostB,
|
|
?MODULE, vcard_set, 100),
|
|
ok.
|
|
|
|
stop(Host) ->
|
|
HostB = list_to_binary(Host),
|
|
ejabberd_hooks:delete(c2s_update_presence, HostB,
|
|
?MODULE, update_presence, 100),
|
|
ejabberd_hooks:delete(vcard_set, HostB,
|
|
?MODULE, vcard_set, 100),
|
|
ok.
|
|
|
|
%%====================================================================
|
|
%% Hooks
|
|
%%====================================================================
|
|
|
|
update_presence(Packet, User, Host) ->
|
|
case exmpp_presence:is_presence(Packet) andalso
|
|
exmpp_xml:get_attribute_as_binary(Packet, <<"type">>, undefined)
|
|
== undefined of
|
|
true ->
|
|
presence_with_xupdate(Packet, User, Host);
|
|
false ->
|
|
Packet
|
|
end.
|
|
|
|
vcard_set(User, Server, VCARD) ->
|
|
US = {User, Server},
|
|
case exmpp_xml:get_path(VCARD, [{element, "PHOTO"}, {element, "BINVAL"}, cdata_as_list]) of
|
|
[] ->
|
|
remove_xupdate(User, Server);
|
|
BinVal ->
|
|
add_xupdate(User, Server, list_to_binary(sha:sha(jlib:decode_base64(BinVal))))
|
|
end,
|
|
ejabberd_sm:force_update_presence(US).
|
|
|
|
%%====================================================================
|
|
%% Mnesia storage
|
|
%%====================================================================
|
|
|
|
add_xupdate(LUser, LServer, Hash) ->
|
|
F = fun() ->
|
|
mnesia:write(#vcard_xupdate{us = {LUser, LServer}, hash = Hash})
|
|
end,
|
|
mnesia:transaction(F).
|
|
|
|
get_xupdate(LUser, LServer) ->
|
|
case mnesia:dirty_read(vcard_xupdate, {LUser, LServer}) of
|
|
[#vcard_xupdate{hash = Hash}] ->
|
|
Hash;
|
|
_ ->
|
|
undefined
|
|
end.
|
|
|
|
remove_xupdate(LUser, LServer) ->
|
|
F = fun() ->
|
|
mnesia:delete({vcard_xupdate, {LUser, LServer}})
|
|
end,
|
|
mnesia:transaction(F).
|
|
|
|
%%%----------------------------------------------------------------------
|
|
%%% Presence stanza rebuilding
|
|
%%%----------------------------------------------------------------------
|
|
|
|
presence_with_xupdate(Stanza, User, Host) ->
|
|
XPhotoEl = build_xphotoel(User, Host),
|
|
StanzaReduced = exmpp_xml:remove_element(Stanza, ?NS_VCARD_UPDATE, x),
|
|
exmpp_xml:append_child(StanzaReduced, XPhotoEl).
|
|
|
|
build_xphotoel(User, Host) ->
|
|
Hash = get_xupdate(User, Host),
|
|
PhotoSubEls = case Hash of
|
|
Hash when is_binary(Hash) ->
|
|
[exmpp_xml:cdata(Hash)];
|
|
_ ->
|
|
[]
|
|
end,
|
|
PhotoEl = [exmpp_xml:element(?NS_VCARD_UPDATE, photo, [], PhotoSubEls)],
|
|
exmpp_xml:element(?NS_VCARD_UPDATE, x, [], PhotoEl).
|