Chapril/xmpp.chapril.org-ejabberd
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Experimental MIX (XEP-0369) support

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This commit is contained in:
Evgeniy Khramtsov 2016-03-08 20:04:29 +03:00
parent 6e40573c13
commit b5121a346d
6 changed files with 506 additions and 2 deletions
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7
include/ns.hrl
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@ -157,3 +157,10 @@
-define(NS_HTTP_UPLOAD_OLD, <<"eu:siacs:conversations:http:upload">>).
-define(NS_THUMBS_1, <<"urn:xmpp:thumbs:1">>).
-define(NS_NICK, <<"http://jabber.org/protocol/nick">>).
-define(NS_MIX_0, <<"urn:xmpp:mix:0">>).
-define(NS_MIX_SERVICEINFO_0, <<"urn:xmpp:mix:0#serviceinfo">>).
-define(NS_MIX_NODES_MESSAGES, <<"urn:xmpp:mix:nodes:messages">>).
-define(NS_MIX_NODES_PRESENCE, <<"urn:xmpp:mix:nodes:presence">>).
-define(NS_MIX_NODES_PARTICIPANTS, <<"urn:xmpp:mix:nodes:participants">>).
-define(NS_MIX_NODES_SUBJECT, <<"urn:xmpp:mix:nodes:subject">>).
-define(NS_MIX_NODES_CONFIG, <<"urn:xmpp:mix:nodes:config">>).

2
src/ejabberd_local.erl
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@ -32,7 +32,7 @@
%% API
-export([start_link/0]).
-export([route/3, route_iq/4, route_iq/5,
-export([route/3, route_iq/4, route_iq/5, process_iq/3,
process_iq_reply/3, register_iq_handler/4,
register_iq_handler/5, register_iq_response_handler/4,
register_iq_response_handler/5, unregister_iq_handler/2,

1
src/ejabberd_sm.erl
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@ -35,6 +35,7 @@
-export([start/0,
start_link/0,
route/3,
process_iq/3,
open_session/5,
open_session/6,
close_session/4,

329
src/mod_mix.erl Normal file
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@ -0,0 +1,329 @@
%%%-------------------------------------------------------------------
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% @copyright (C) 2016, Evgeny Khramtsov
%%% @doc
%%%
%%% @end
%%% Created : 2 Mar 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%-------------------------------------------------------------------
-module(mod_mix).
-behaviour(gen_server).
-behaviour(gen_mod).
%% API
-export([start_link/2, start/2, stop/1, process_iq/3,
disco_items/5, disco_identity/5, disco_info/5,
disco_features/5]).
%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
terminate/2, code_change/3]).
-include("logger.hrl").
-include("jlib.hrl").
-include("pubsub.hrl").
-define(PROCNAME, ejabberd_mod_mix).
-define(NODES, [?NS_MIX_NODES_MESSAGES,
?NS_MIX_NODES_PRESENCE,
?NS_MIX_NODES_PARTICIPANTS,
?NS_MIX_NODES_SUBJECT,
?NS_MIX_NODES_CONFIG]).
-record(state, {server_host :: binary(),
host :: binary()}).
%%%===================================================================
%%% API
%%%===================================================================
start_link(Host, Opts) ->
Proc = gen_mod:get_module_proc(Host, ?PROCNAME),
gen_server:start_link({local, Proc}, ?MODULE, [Host, Opts], []).
start(Host, Opts) ->
Proc = gen_mod:get_module_proc(Host, ?PROCNAME),
ChildSpec = {Proc, {?MODULE, start_link, [Host, Opts]},
temporary, 5000, worker, [?MODULE]},
supervisor:start_child(ejabberd_sup, ChildSpec).
stop(Host) ->
Proc = gen_mod:get_module_proc(Host, ?PROCNAME),
supervisor:terminate_child(ejabberd_sup, Proc),
supervisor:delete_child(ejabberd_sup, Proc),
ok.
disco_features(_Acc, _From, _To, _Node, _Lang) ->
{result, [?NS_MIX_0]}.
disco_items(_Acc, _From, To, _Node, _Lang) when To#jid.luser /= <<"">> ->
To_s = jid:to_string(jid:remove_resource(To)),
{result, [#xmlel{name = <<"item">>,
attrs = [{<<"jid">>, To_s},
{<<"node">>, Node}]} || Node <- ?NODES]};
disco_items(_Acc, _From, _To, _Node, _Lang) ->
{result, []}.
disco_identity(Acc, _From, To, _Node, _Lang) when To#jid.luser == <<"">> ->
Acc ++ [#xmlel{name = <<"identity">>,
attrs =
[{<<"category">>, <<"conference">>},
{<<"name">>, <<"MIX service">>},
{<<"type">>, <<"text">>}]}];
disco_identity(Acc, _From, _To, _Node, _Lang) ->
Acc ++ [#xmlel{name = <<"identity">>,
attrs =
[{<<"category">>, <<"conference">>},
{<<"type">>, <<"mix">>}]}].
disco_info(_Acc, _From, To, _Node, _Lang) when is_atom(To) ->
[#xmlel{name = <<"x">>,
attrs = [{<<"xmlns">>, ?NS_XDATA},
{<<"type">>, <<"result">>}],
children = [#xmlel{name = <<"field">>,
attrs = [{<<"var">>, <<"FORM_TYPE">>},
{<<"type">>, <<"hidden">>}],
children = [#xmlel{name = <<"value">>,
children = [{xmlcdata,
?NS_MIX_SERVICEINFO_0}]}]}]}];
disco_info(Acc, _From, _To, _Node, _Lang) ->
Acc.
process_iq(From, To,
#iq{type = set, sub_el = #xmlel{name = <<"join">>} = SubEl} = IQ) ->
Nodes = lists:flatmap(
fun(#xmlel{name = <<"subscribe">>, attrs = Attrs}) ->
Node = fxml:get_attr_s(<<"node">>, Attrs),
case lists:member(Node, ?NODES) of
true -> [Node];
false -> []
end;
(_) ->
[]
end, SubEl#xmlel.children),
case subscribe_nodes(From, To, Nodes) of
{result, _} ->
case publish_participant(From, To) of
{result, _} ->
LFrom_s = jid:to_string(jid:tolower(jid:remove_resource(From))),
Subscribe = [#xmlel{name = <<"subscribe">>,
attrs = [{<<"node">>, Node}]} || Node <- Nodes],
IQ#iq{type = result,
sub_el = [#xmlel{name = <<"join">>,
attrs = [{<<"jid">>, LFrom_s},
{<<"xmlns">>, ?NS_MIX_0}],
children = Subscribe}]};
{error, Err} ->
IQ#iq{type = error, sub_el = [SubEl, Err]}
end;
{error, Err} ->
IQ#iq{type = error, sub_el = [SubEl, Err]}
end;
process_iq(From, To,
#iq{type = set, sub_el = #xmlel{name = <<"leave">>} = SubEl} = IQ) ->
case delete_participant(From, To) of
{result, _} ->
case unsubscribe_nodes(From, To, ?NODES) of
{result, _} ->
IQ#iq{type = result, sub_el = []};
{error, Err} ->
IQ#iq{type = error, sub_el = [SubEl, Err]}
end;
{error, Err} ->
IQ#iq{type = error, sub_el = [SubEl, Err]}
end;
process_iq(_From, _To, #iq{sub_el = SubEl} = IQ) ->
IQ#iq{type = error, sub_el = [SubEl, ?ERR_BAD_REQUEST]}.
%%%===================================================================
%%% gen_server callbacks
%%%===================================================================
init([ServerHost, Opts]) ->
Host = gen_mod:get_opt_host(ServerHost, Opts, <<"mix.@HOST@">>),
IQDisc = gen_mod:get_opt(iqdisc, Opts, fun gen_iq_handler:check_type/1,
one_queue),
ConfigTab = gen_mod:get_module_proc(Host, config),
ets:new(ConfigTab, [named_table]),
ets:insert(ConfigTab, {plugins, [<<"mix">>]}),
ejabberd_hooks:add(disco_local_items, Host, ?MODULE, disco_items, 100),
ejabberd_hooks:add(disco_local_features, Host, ?MODULE, disco_features, 100),
ejabberd_hooks:add(disco_local_identity, Host, ?MODULE, disco_identity, 100),
ejabberd_hooks:add(disco_sm_items, Host, ?MODULE, disco_items, 100),
ejabberd_hooks:add(disco_sm_features, Host, ?MODULE, disco_features, 100),
ejabberd_hooks:add(disco_sm_identity, Host, ?MODULE, disco_identity, 100),
ejabberd_hooks:add(disco_info, Host, ?MODULE, disco_info, 100),
gen_iq_handler:add_iq_handler(ejabberd_local, Host,
?NS_DISCO_ITEMS, mod_disco,
process_local_iq_items, IQDisc),
gen_iq_handler:add_iq_handler(ejabberd_local, Host,
?NS_DISCO_INFO, mod_disco,
process_local_iq_info, IQDisc),
gen_iq_handler:add_iq_handler(ejabberd_sm, Host,
?NS_DISCO_ITEMS, mod_disco,
process_local_iq_items, IQDisc),
gen_iq_handler:add_iq_handler(ejabberd_sm, Host,
?NS_DISCO_INFO, mod_disco,
process_local_iq_info, IQDisc),
gen_iq_handler:add_iq_handler(ejabberd_sm, Host,
?NS_PUBSUB, mod_pubsub, iq_sm, IQDisc),
gen_iq_handler:add_iq_handler(ejabberd_sm, Host,
?NS_MIX_0, ?MODULE, process_iq, IQDisc),
ejabberd_router:register_route(Host),
{ok, #state{server_host = ServerHost, host = Host}}.
handle_call(_Request, _From, State) ->
Reply = ok,
{reply, Reply, State}.
handle_cast(_Msg, State) ->
{noreply, State}.
handle_info({route, From, To, Packet}, State) ->
case catch do_route(State, From, To, Packet) of
{'EXIT', _} = Err ->
try
?ERROR_MSG("failed to route packet ~p from '~s' to '~s': ~p",
[Packet, jid:to_string(From), jid:to_string(To), Err]),
ErrPkt = jlib:make_error_reply(Packet, ?ERR_INTERNAL_SERVER_ERROR),
ejabberd_router:route_error(To, From, ErrPkt, Packet)
catch _:_ ->
ok
end;
_ ->
ok
end,
{noreply, State};
handle_info(_Info, State) ->
{noreply, State}.
terminate(_Reason, _State) ->
ok.
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
%%%===================================================================
%%% Internal functions
%%%===================================================================
do_route(_State, From, To, #xmlel{name = <<"iq">>} = Packet) ->
if To#jid.luser == <<"">> ->
ejabberd_local:process_iq(From, To, Packet);
true ->
ejabberd_sm:process_iq(From, To, Packet)
end;
do_route(_State, From, To, #xmlel{name = <<"presence">>} = Packet)
when To#jid.luser /= <<"">> ->
case fxml:get_tag_attr_s(<<"type">>, Packet) of
<<"unavailable">> ->
delete_presence(From, To);
_ ->
ok
end;
do_route(_State, _From, _To, _Packet) ->
ok.
subscribe_nodes(From, To, Nodes) ->
LTo = jid:tolower(jid:remove_resource(To)),
LFrom = jid:tolower(jid:remove_resource(From)),
From_s = jid:to_string(LFrom),
lists:foldl(
fun(_Node, {error, _} = Err) ->
Err;
(Node, {result, _}) ->
case mod_pubsub:subscribe_node(LTo, Node, From, From_s, []) of
{error, _} = Err ->
case is_item_not_found(Err) of
true ->
case mod_pubsub:create_node(
LTo, To#jid.lserver, Node, LFrom, <<"mix">>) of
{result, _} ->
mod_pubsub:subscribe_node(LTo, Node, From, From_s, []);
Error ->
Error
end;
false ->
Err
end;
{result, _} = Result ->
Result
end
end, {result, []}, Nodes).
unsubscribe_nodes(From, To, Nodes) ->
LTo = jid:tolower(jid:remove_resource(To)),
LFrom = jid:tolower(jid:remove_resource(From)),
From_s = jid:to_string(LFrom),
lists:foldl(
fun(_Node, {error, _} = Err) ->
Err;
(Node, {result, _} = Result) ->
case mod_pubsub:unsubscribe_node(LTo, Node, From, From_s, <<"">>) of
{error, _} = Err ->
case is_not_subscribed(Err) of
true -> Result;
_ -> Err
end;
{result, _} = Res ->
Res
end
end, {result, []}, Nodes).
publish_participant(From, To) ->
LFrom = jid:tolower(jid:remove_resource(From)),
LTo = jid:tolower(jid:remove_resource(To)),
Participant = #xmlel{name = <<"participant">>,
attrs = [{<<"xmlns">>, ?NS_MIX_0},
{<<"jid">>, jid:to_string(LFrom)}]},
ItemID = p1_sha:sha(jid:to_string(LFrom)),
mod_pubsub:publish_item(
LTo, To#jid.lserver, ?NS_MIX_NODES_PARTICIPANTS,
From, ItemID, [Participant]).
delete_presence(From, To) ->
LFrom = jid:tolower(From),
LTo = jid:tolower(jid:remove_resource(To)),
case mod_pubsub:get_items(LTo, ?NS_MIX_NODES_PRESENCE) of
Items when is_list(Items) ->
lists:foreach(
fun(#pubsub_item{modification = {_, LJID},
itemid = {ItemID, _}}) when LJID == LFrom ->
delete_item(From, To, ?NS_MIX_NODES_PRESENCE, ItemID);
(_) ->
ok
end, Items);
_ ->
ok
end.
delete_participant(From, To) ->
LFrom = jid:tolower(jid:remove_resource(From)),
ItemID = p1_sha:sha(jid:to_string(LFrom)),
delete_presence(From, To),
delete_item(From, To, ?NS_MIX_NODES_PARTICIPANTS, ItemID).
delete_item(From, To, Node, ItemID) ->
LTo = jid:tolower(jid:remove_resource(To)),
case mod_pubsub:delete_item(
LTo, Node, From, ItemID, true) of
{result, _} = Res ->
Res;
{error, _} = Err ->
case is_item_not_found(Err) of
true -> {result, []};
false -> Err
end
end.
is_item_not_found({error, ErrEl}) ->
case fxml:get_subtag_with_xmlns(
ErrEl, <<"item-not-found">>, ?NS_STANZAS) of
#xmlel{} -> true;
_ -> false
end.
is_not_subscribed({error, ErrEl}) ->
case fxml:get_subtag_with_xmlns(
ErrEl, <<"not-subscribed">>, ?NS_PUBSUB_ERRORS) of
#xmlel{} -> true;
_ -> false
end.

2
src/mod_pubsub.erl
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@ -63,7 +63,7 @@
%% exports for console debug manual use
-export([create_node/5, create_node/7, delete_node/3,
subscribe_node/5, unsubscribe_node/5, publish_item/6,
delete_item/4, send_items/7, get_items/2, get_item/3,
delete_item/4, delete_item/5, send_items/7, get_items/2, get_item/3,
get_cached_item/2, get_configure/5, set_configure/5,
tree_action/3, node_action/4, node_call/4]).

167
src/node_mix.erl Normal file
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@ -0,0 +1,167 @@
%%%-------------------------------------------------------------------
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% @copyright (C) 2016, Evgeny Khramtsov
%%% @doc
%%%
%%% @end
%%% Created : 8 Mar 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%-------------------------------------------------------------------
-module(node_mix).
-behaviour(gen_pubsub_node).
%% API
-export([init/3, terminate/2, options/0, features/0,
create_node_permission/6, create_node/2, delete_node/1,
purge_node/2, subscribe_node/8, unsubscribe_node/4,
publish_item/6, delete_item/4, remove_extra_items/3,
get_entity_affiliations/2, get_node_affiliations/1,
get_affiliation/2, set_affiliation/3,
get_entity_subscriptions/2, get_node_subscriptions/1,
get_subscriptions/2, set_subscriptions/4,
get_pending_nodes/2, get_states/1, get_state/2,
set_state/1, get_items/7, get_items/3, get_item/7,
get_item/2, set_item/1, get_item_name/3, node_to_path/1,
path_to_node/1]).
-include("pubsub.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(Host, ServerHost, Opts) ->
node_flat:init(Host, ServerHost, Opts).
terminate(Host, ServerHost) ->
node_flat:terminate(Host, ServerHost).
options() ->
[{deliver_payloads, true},
{notify_config, false},
{notify_delete, false},
{notify_retract, true},
{purge_offline, false},
{persist_items, true},
{max_items, ?MAXITEMS},
{subscribe, true},
{access_model, open},
{roster_groups_allowed, []},
{publish_model, open},
{notification_type, headline},
{max_payload_size, ?MAX_PAYLOAD_SIZE},
{send_last_published_item, never},
{deliver_notifications, true},
{broadcast_all_resources, true},
{presence_based_delivery, false}].
features() ->
[<<"create-nodes">>,
<<"delete-nodes">>,
<<"delete-items">>,
<<"instant-nodes">>,
<<"item-ids">>,
<<"outcast-affiliation">>,
<<"persistent-items">>,
<<"publish">>,
<<"purge-nodes">>,
<<"retract-items">>,
<<"retrieve-affiliations">>,
<<"retrieve-items">>,
<<"retrieve-subscriptions">>,
<<"subscribe">>,
<<"subscription-notifications">>].
create_node_permission(Host, ServerHost, Node, ParentNode, Owner, Access) ->
node_flat:create_node_permission(Host, ServerHost, Node, ParentNode, Owner, Access).
create_node(Nidx, Owner) ->
node_flat:create_node(Nidx, Owner).
delete_node(Removed) ->
node_flat:delete_node(Removed).
subscribe_node(Nidx, Sender, Subscriber, AccessModel,
SendLast, PresenceSubscription, RosterGroup, Options) ->
node_flat:subscribe_node(Nidx, Sender, Subscriber, AccessModel, SendLast,
PresenceSubscription, RosterGroup, Options).
unsubscribe_node(Nidx, Sender, Subscriber, SubId) ->
node_flat:unsubscribe_node(Nidx, Sender, Subscriber, SubId).
publish_item(Nidx, Publisher, Model, MaxItems, ItemId, Payload) ->
node_flat:publish_item(Nidx, Publisher, Model, MaxItems, ItemId, Payload).
remove_extra_items(Nidx, MaxItems, ItemIds) ->
node_flat:remove_extra_items(Nidx, MaxItems, ItemIds).
delete_item(Nidx, Publisher, PublishModel, ItemId) ->
node_flat:delete_item(Nidx, Publisher, PublishModel, ItemId).
purge_node(Nidx, Owner) ->
node_flat:purge_node(Nidx, Owner).
get_entity_affiliations(Host, Owner) ->
node_flat:get_entity_affiliations(Host, Owner).
get_node_affiliations(Nidx) ->
node_flat:get_node_affiliations(Nidx).
get_affiliation(Nidx, Owner) ->
node_flat:get_affiliation(Nidx, Owner).
set_affiliation(Nidx, Owner, Affiliation) ->
node_flat:set_affiliation(Nidx, Owner, Affiliation).
get_entity_subscriptions(Host, Owner) ->
node_flat:get_entity_subscriptions(Host, Owner).
get_node_subscriptions(Nidx) ->
node_flat:get_node_subscriptions(Nidx).
get_subscriptions(Nidx, Owner) ->
node_flat:get_subscriptions(Nidx, Owner).
set_subscriptions(Nidx, Owner, Subscription, SubId) ->
node_flat:set_subscriptions(Nidx, Owner, Subscription, SubId).
get_pending_nodes(Host, Owner) ->
node_flat:get_pending_nodes(Host, Owner).
get_states(Nidx) ->
node_flat:get_states(Nidx).
get_state(Nidx, JID) ->
node_flat:get_state(Nidx, JID).
set_state(State) ->
node_flat:set_state(State).
get_items(Nidx, From, RSM) ->
node_flat:get_items(Nidx, From, RSM).
get_items(Nidx, JID, AccessModel, PresenceSubscription, RosterGroup, SubId, RSM) ->
node_flat:get_items(Nidx, JID, AccessModel,
PresenceSubscription, RosterGroup, SubId, RSM).
get_item(Nidx, ItemId) ->
node_flat:get_item(Nidx, ItemId).
get_item(Nidx, ItemId, JID, AccessModel, PresenceSubscription, RosterGroup, SubId) ->
node_flat:get_item(Nidx, ItemId, JID, AccessModel,
PresenceSubscription, RosterGroup, SubId).
set_item(Item) ->
node_flat:set_item(Item).
get_item_name(Host, Node, Id) ->
node_flat:get_item_name(Host, Node, Id).
node_to_path(Node) ->
node_flat:node_to_path(Node).
path_to_node(Path) ->
node_flat:path_to_node(Path).
%%%===================================================================
%%% Internal functions
%%%===================================================================