/
mod_pubsub.erl
4540 lines (4195 loc) · 197 KB
/
mod_pubsub.erl
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%%% ====================================================================
%%% ``The contents of this file are subject to the Erlang Public License,
%%% Version 1.1, (the "License"); you may not use this file except in
%%% compliance with the License. You should have received a copy of the
%%% Erlang Public License along with this software. If not, it can be
%%% retrieved via the world wide web at http://www.erlang.org/.
%%%
%%%
%%% Software distributed under the License is distributed on an "AS IS"
%%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%%% the License for the specific language governing rights and limitations
%%% under the License.
%%%
%%%
%%% The Initial Developer of the Original Code is ProcessOne.
%%% Portions created by ProcessOne are Copyright 2006-2015, ProcessOne
%%% All Rights Reserved.''
%%% This software is copyright 2006-2015, ProcessOne.
%%%
%%% @copyright 2006-2015 ProcessOne
%%% @author Christophe Romain <christophe.romain@process-one.net>
%%% [http://www.process-one.net/]
%%% @version {@vsn}, {@date} {@time}
%%% @end
%%% ====================================================================
%%% @doc The module <strong>{@module}</strong> is the core of the PubSub
%%% extension. It relies on PubSub plugins for a large part of its functions.
%%%
%%% @headerfile "pubsub.hrl"
%%%
%%% @reference See <a href="http://www.xmpp.org/extensions/xep-0060.html">XEP-0060: Pubsub</a> for
%%% the latest version of the PubSub specification.
%%% This module uses version 1.12 of the specification as a base.
%%% Most of the specification is implemented.
%%% Functions concerning configuration should be rewritten.
%%%
%%% Support for subscription-options and multi-subscribe features was
%%% added by Brian Cully (bjc AT kublai.com). For information on
%%% subscription-options and multi-subscribe see XEP-0060 sections 6.1.6,
%%% 6.2.3.1, 6.2.3.5, and 6.3. For information on subscription leases see
%%% XEP-0060 section 12.18.
-module(mod_pubsub).
-behaviour(gen_mod).
-behaviour(gen_server).
-behaviour(gdpr).
-behaviour(mongoose_packet_handler).
-author('christophe.romain@process-one.net').
-xep([{xep, 60}, {version, "1.13-1"}]).
-xep([{xep, 163}, {version, "1.2"}]).
-xep([{xep, 248}, {version, "0.2"}]).
-xep([{xep, 277}, {version, "0.6.1"}]).
-include("mongoose.hrl").
-include("adhoc.hrl").
-include("jlib.hrl").
-include("pubsub.hrl").
-define(STDTREE, <<"tree">>).
-define(STDNODE, <<"flat">>).
-define(STDNODE_MODULE, node_flat).
-define(PEPNODE, <<"pep">>).
-define(PUSHNODE, <<"push">>).
%% exports for hooks
-export([presence_probe/4, caps_recognised/4,
in_subscription/6, out_subscription/5,
on_user_offline/5, remove_user/2, remove_user/3,
disco_local_identity/5, disco_local_features/5,
disco_local_items/5, disco_sm_identity/5,
disco_sm_features/5, disco_sm_items/5, handle_pep_authorization_response/1]).
%% exported iq handlers
-export([iq_sm/4]).
%% 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,
get_cached_item/2,
tree_action/3, node_action/4, node_call/4]).
%% general helpers for plugins
-export([subscription_to_string/1, affiliation_to_string/1,
string_to_subscription/1, string_to_affiliation/1,
extended_error/2, extended_error/3, service_jid/1,
tree/1, tree/2, plugin/2, plugins/1, config/3,
host/1, serverhost/1]).
%% API and gen_server callbacks
-export([start_link/2, start/2, stop/1, deps/2, init/1,
handle_call/3, handle_cast/2, handle_info/2,
terminate/2, code_change/3]).
-export([default_host/0]).
-export([get_personal_data/2]).
%% packet handler export
-export([process_packet/5]).
-export([send_loop/1]).
-define(PROCNAME, ejabberd_mod_pubsub).
-define(LOOPNAME, ejabberd_mod_pubsub_loop).
%%====================================================================
%% API
%%====================================================================
%%--------------------------------------------------------------------
%% Function: start_link() -> {ok, Pid} | ignore | {error, Error}
%% Description: Starts the server
%%--------------------------------------------------------------------
-export_type([
host/0,
hostPubsub/0,
hostPEP/0,
%%
nodeIdx/0,
nodeId/0,
itemId/0,
subId/0,
payload/0,
%%
nodeOption/0,
nodeOptions/0,
subOption/0,
subOptions/0,
%%
affiliation/0,
subscription/0,
accessModel/0,
publishModel/0
]).
%% -type payload() defined here because the -type exml:element() is not accessible
%% from pubsub.hrl
-type(payload() :: [] | [exml:element(), ...]).
-type(publishOptions() :: undefined | exml:element()).
-export_type([
pubsubNode/0,
pubsubState/0,
pubsubItem/0,
pubsubLastItem/0,
publishOptions/0
]).
-type(pubsubNode() ::
#pubsub_node{
nodeid :: {Host::mod_pubsub:host(), Node::mod_pubsub:nodeId()},
id :: Nidx::mod_pubsub:nodeIdx(),
parents :: [Node::mod_pubsub:nodeId()],
type :: Type::binary(),
owners :: [Owner::jid:ljid(), ...],
options :: Opts::mod_pubsub:nodeOptions()
}
).
-type(pubsubState() ::
#pubsub_state{
stateid :: {Entity::jid:ljid(), Nidx::mod_pubsub:nodeIdx()},
items :: [ItemId::mod_pubsub:itemId()],
affiliation :: Affs::mod_pubsub:affiliation(),
subscriptions :: [{Sub::mod_pubsub:subscription(), SubId::mod_pubsub:subId()}]
}
).
-type(pubsubItem() ::
#pubsub_item{
itemid :: {ItemId::mod_pubsub:itemId(), Nidx::mod_pubsub:nodeIdx()},
creation :: {erlang:timestamp(), jid:ljid()},
modification :: {erlang:timestamp(), jid:ljid()},
payload :: mod_pubsub:payload()
}
).
-type(pubsubLastItem() ::
#pubsub_last_item{
nodeid :: mod_pubsub:nodeIdx(),
itemid :: mod_pubsub:itemId(),
creation :: {erlang:timestamp(), jid:ljid()},
payload :: mod_pubsub:payload()
}
).
-record(state,
{
server_host,
host,
access,
pep_mapping = [],
ignore_pep_from_offline = true,
last_item_cache = false,
max_items_node = ?MAXITEMS,
max_subscriptions_node = undefined,
default_node_config = [],
nodetree = <<"nodetree_", (?STDTREE)/binary>>,
plugins = [?STDNODE]
}).
-type(state() ::
#state{
server_host :: binary(),
host :: mod_pubsub:hostPubsub(),
access :: atom(),
pep_mapping :: [{binary(), binary()}],
ignore_pep_from_offline :: boolean(),
last_item_cache :: mnesia | rdbms | false,
max_items_node :: non_neg_integer(),
max_subscriptions_node :: non_neg_integer()|undefined,
default_node_config :: [{atom(), binary()|boolean()|integer()|atom()}],
nodetree :: binary(),
plugins :: [binary(), ...]
}
).
start_link(Host, Opts) ->
Proc = gen_mod:get_module_proc(Host, ?PROCNAME),
gen_server:start_link({local, Proc}, ?MODULE, [Host, Opts], []).
deps(_Host, _Opts) ->
[{mod_caps, optional}].
start(Host, Opts) ->
Proc = gen_mod:get_module_proc(Host, ?PROCNAME),
ChildSpec = {Proc, {?MODULE, start_link, [Host, Opts]},
transient, 1000, worker, [?MODULE]},
ensure_metrics(Host),
ejabberd_sup:start_child(ChildSpec).
stop(Host) ->
Proc = gen_mod:get_module_proc(Host, ?PROCNAME),
gen_server:call(Proc, stop),
ejabberd_sup:stop_child(Proc).
-spec default_host() -> binary().
default_host() ->
<<"pubsub.@HOST@">>.
%% State is an extra data, required for processing
-spec process_packet(Acc :: mongoose_acc:t(), From ::jid:jid(), To ::jid:jid(), El :: exml:element(),
State :: #state{}) -> any().
process_packet(Acc, From, To, El, #state{server_host = ServerHost, access = Access, plugins = Plugins}) ->
Acc2 = mongoose_acc:strip(#{ lserver => From#jid.lserver,
from_jid => From,
to_jid => To,
element => El }, Acc),
Packet = mongoose_acc:element(Acc2),
do_route(ServerHost, Access, Plugins, To#jid.lserver, From, To, Packet).
%%====================================================================
%% GDPR callback
%%====================================================================
-spec get_personal_data(Username :: jid:user(), Server :: jid:server()) ->
[{gdpr:data_group(), gdpr:schema(), gdpr:entries()}].
get_personal_data(Username, Server) ->
LUser = jid:nodeprep(Username),
LServer = jid:nodeprep(Server),
Backends = mongoose_lib:find_behaviour_implementations(mod_pubsub_db),
Payloads = get_personal_data_group(LUser, LServer, Backends, get_user_payloads),
Nodes = get_personal_data_group(LUser, LServer, Backends, get_user_nodes),
Subscriptions = get_personal_data_group(LUser, LServer, Backends, get_user_subscriptions),
[{pubsub_payloads, ["node_name", "item_id", "payload"], Payloads},
{pubsub_nodes, ["node_name", "type"], Nodes},
{pubsub_subscriptions, ["node_name"], Subscriptions}].
get_personal_data_group(LUser, LServer, Backends, FunctionName) ->
lists:flatmap(fun(B) -> try B:FunctionName(LUser, LServer) of
Result when is_list(Result) -> Result;
_ -> []
catch
_:_ -> []
end
end, Backends).
%%====================================================================
%% gen_server callbacks
%%====================================================================
%%--------------------------------------------------------------------
%% Function: init(Args) -> {ok, State} |
%% {ok, State, Timeout} |
%% ignore |
%% {stop, Reason}
%% Description: Initiates the server
%%--------------------------------------------------------------------
-spec init(
[binary() | [{_, _}], ...])
-> {'ok', state()}.
init([ServerHost, Opts]) ->
?DEBUG("pubsub init ~p ~p", [ServerHost, Opts]),
Host = gen_mod:get_opt_subhost(ServerHost, Opts, default_host()),
init_backend(ServerHost, Opts),
ets:new(gen_mod:get_module_proc(ServerHost, config), [set, named_table, public]),
{Plugins, NodeTree, PepMapping} = init_plugins(Host, ServerHost, Opts),
mod_disco:register_feature(ServerHost, ?NS_PUBSUB),
store_config_in_ets(Host, ServerHost, Opts, Plugins, NodeTree, PepMapping),
add_hooks(ServerHost, hooks()),
case lists:member(?PEPNODE, Plugins) of
true ->
add_hooks(ServerHost, pep_hooks()),
add_pep_iq_handlers(ServerHost, Opts);
false ->
ok
end,
{_, State} = init_send_loop(ServerHost),
%% Pass State as extra into ?MODULE:process_packet/5 function
ejabberd_router:register_route(Host, mongoose_packet_handler:new(?MODULE, State)),
{ok, State}.
init_backend(ServerHost, Opts) ->
TrackedDBFuns = [create_node, del_node, get_state, get_states,
get_states_by_lus, get_states_by_bare,
get_states_by_full, get_own_nodes_states,
get_items, get_item, set_item, add_item,
del_item, del_items,
set_node, find_node_by_id, find_nodes_by_key,
find_node_by_name, delete_node, get_subnodes,
get_subnodes_tree, get_parentnodes_tree
],
gen_mod:start_backend_module(mod_pubsub_db, Opts, TrackedDBFuns),
mod_pubsub_db_backend:start(),
maybe_start_cache_module(ServerHost, Opts).
store_config_in_ets(Host, ServerHost, Opts, Plugins, NodeTree, PepMapping) ->
Access = gen_mod:get_opt(access_createnode, Opts, fun(A) when is_atom(A) -> A end, all),
PepOffline = gen_mod:get_opt(ignore_pep_from_offline, Opts,
fun(A) when is_boolean(A) -> A end, true),
LastItemCache = gen_mod:get_opt(last_item_cache, Opts,
fun(A) when A == rdbms orelse A == mnesia -> A end, false),
MaxItemsNode = gen_mod:get_opt(max_items_node, Opts,
fun(A) when is_integer(A) andalso A >= 0 -> A end, ?MAXITEMS),
MaxSubsNode = gen_mod:get_opt(max_subscriptions_node, Opts,
fun(A) when is_integer(A) andalso A >= 0 -> A end, undefined),
DefaultNodeCfg = gen_mod:get_opt(default_node_config, Opts,
fun(A) when is_list(A) -> filter_node_options(A) end, []),
ItemPublisher = gen_mod:get_opt(item_publisher, Opts,
fun(A) when is_boolean(A) -> A end, false),
ets:insert(gen_mod:get_module_proc(ServerHost, config), {nodetree, NodeTree}),
ets:insert(gen_mod:get_module_proc(ServerHost, config), {plugins, Plugins}),
ets:insert(gen_mod:get_module_proc(ServerHost, config), {last_item_cache, LastItemCache}),
ets:insert(gen_mod:get_module_proc(ServerHost, config), {max_items_node, MaxItemsNode}),
ets:insert(gen_mod:get_module_proc(ServerHost, config), {max_subscriptions_node, MaxSubsNode}),
ets:insert(gen_mod:get_module_proc(ServerHost, config), {default_node_config, DefaultNodeCfg}),
ets:insert(gen_mod:get_module_proc(ServerHost, config), {pep_mapping, PepMapping}),
ets:insert(gen_mod:get_module_proc(ServerHost, config), {ignore_pep_from_offline, PepOffline}),
ets:insert(gen_mod:get_module_proc(ServerHost, config), {host, Host}),
ets:insert(gen_mod:get_module_proc(ServerHost, config), {access, Access}),
ets:insert(gen_mod:get_module_proc(ServerHost, config), {item_publisher, ItemPublisher}).
add_hooks(ServerHost, Hooks) ->
[ ejabberd_hooks:add(Hook, ServerHost, ?MODULE, F, Seq) || {Hook, F, Seq} <- Hooks ].
delete_hooks(ServerHost, Hooks) ->
[ ejabberd_hooks:delete(Hook, ServerHost, ?MODULE, F, Seq) || {Hook, F, Seq} <- Hooks ].
hooks() ->
[
{sm_remove_connection_hook, on_user_offline, 75},
{disco_local_identity, disco_local_identity, 75},
{disco_local_features, disco_local_features, 75},
{disco_local_items, disco_local_items, 75},
{presence_probe_hook, presence_probe, 80},
{roster_in_subscription, in_subscription, 50},
{roster_out_subscription, out_subscription, 50},
{remove_user, remove_user, 50},
{anonymous_purge_hook, remove_user, 50}
].
pep_hooks() ->
[
{caps_recognised, caps_recognised, 80},
{disco_sm_identity, disco_sm_identity, 75},
{disco_sm_features, disco_sm_features, 75},
{disco_sm_items, disco_sm_items, 75},
{filter_local_packet, handle_pep_authorization_response, 1}
].
add_pep_iq_handlers(ServerHost, Opts) ->
IQDisc = gen_mod:get_opt(iqdisc, Opts, fun gen_iq_handler:check_type/1, one_queue),
gen_iq_handler:add_iq_handler(ejabberd_sm, ServerHost, ?NS_PUBSUB, ?MODULE, iq_sm, IQDisc),
gen_iq_handler:add_iq_handler(ejabberd_sm, ServerHost, ?NS_PUBSUB_OWNER,
?MODULE, iq_sm, IQDisc).
delete_pep_iq_handlers(ServerHost) ->
gen_iq_handler:remove_iq_handler(ejabberd_sm, ServerHost, ?NS_PUBSUB),
gen_iq_handler:remove_iq_handler(ejabberd_sm, ServerHost, ?NS_PUBSUB_OWNER).
init_send_loop(ServerHost) ->
NodeTree = config(ServerHost, nodetree),
Plugins = config(ServerHost, plugins),
LastItemCache = config(ServerHost, last_item_cache),
MaxItemsNode = config(ServerHost, max_items_node),
PepMapping = config(ServerHost, pep_mapping),
PepOffline = config(ServerHost, ignore_pep_from_offline),
Host = config(ServerHost, host),
Access = config(ServerHost, access),
State = #state{host = Host, server_host = ServerHost,
access = Access, pep_mapping = PepMapping,
ignore_pep_from_offline = PepOffline,
last_item_cache = LastItemCache,
max_items_node = MaxItemsNode, nodetree = NodeTree,
plugins = Plugins },
Proc = gen_mod:get_module_proc(ServerHost, ?LOOPNAME),
Pid = case whereis(Proc) of
undefined ->
SendLoop = spawn(?MODULE, send_loop, [State]),
register(Proc, SendLoop),
SendLoop;
Loop ->
Loop
end,
{Pid, State}.
%% @doc Call the init/1 function for each plugin declared in the config file.
%% The default plugin module is implicit.
%% <p>The Erlang code for the plugin is located in a module called
%% <em>node_plugin</em>. The 'node_' prefix is mandatory.</p>
%% <p>The modules are initialized in alphetical order and the list is checked
%% and sorted to ensure that each module is initialized only once.</p>
%% <p>See {@link node_hometree:init/1} for an example implementation.</p>
init_plugins(Host, ServerHost, Opts) ->
TreePlugin = tree(Host, gen_mod:get_opt(nodetree, Opts,
fun(A) when is_binary(A) -> A end,
?STDTREE)),
?DEBUG("** tree plugin is ~p", [TreePlugin]),
gen_pubsub_nodetree:init(TreePlugin, Host, ServerHost, Opts),
Plugins = gen_mod:get_opt(plugins, Opts,
fun(A) when is_list(A) -> A end, [?STDNODE]),
PepMapping = gen_mod:get_opt(pep_mapping, Opts,
fun(A) when is_list(A) -> A end, []),
?DEBUG("** PEP Mapping : ~p~n", [PepMapping]),
PluginsOK = lists:foldl(pa:bind(fun init_plugin/5, Host, ServerHost, Opts), [], Plugins),
{lists:reverse(PluginsOK), TreePlugin, PepMapping}.
init_plugin(Host, ServerHost, Opts, Name, Acc) ->
Plugin = plugin(Host, Name),
case catch apply(Plugin, init, [Host, ServerHost, Opts]) of
{'EXIT', _Error} ->
?ERROR_MSG("event=pubsub_plugin_init_failed,plugin=~p,host=~s,pubsub_host=~s,opts=~p",
[Plugin, ServerHost, Host, Opts]),
Acc;
_ ->
?DEBUG("** init ~s plugin", [Name]),
[Name | Acc]
end.
terminate_plugins(Host, ServerHost, Plugins, TreePlugin) ->
lists:foreach(
fun (Name) ->
?DEBUG("** terminate ~s plugin", [Name]),
Plugin = plugin(Host, Name),
gen_pubsub_node:terminate(Plugin, Host, ServerHost)
end,
Plugins),
gen_pubsub_nodetree:terminate(TreePlugin, Host, ServerHost),
ok.
send_loop(State) ->
receive
{send_last_pubsub_items, Recipient} ->
send_last_pubsub_items(Recipient, State),
send_loop(State);
{send_last_pep_items, Recipient, Pid} ->
send_last_pep_items(Recipient, Pid, State),
send_loop(State);
{send_last_items_from_owner, NodeOwner, Recipient} ->
send_last_items_from_owner(State#state.host, NodeOwner, Recipient),
send_loop(State);
stop ->
ok
end.
send_last_pubsub_items(Recipient, #state{host = Host, plugins = Plugins})
when is_list(Plugins) ->
lists:foreach(
fun(PluginType) ->
send_last_pubsub_items_for_plugin(Host, PluginType, Recipient)
end,
Plugins).
send_last_pubsub_items_for_plugin(Host, PluginType, Recipient) ->
JIDs = [Recipient, jid:to_lower(Recipient), jid:to_bare(Recipient)],
Subs = get_subscriptions_for_send_last(Host, PluginType, JIDs),
lists:foreach(
fun({#pubsub_node{nodeid={_, Node}, id=Nidx, options=Options}, _, _, SubJID}) ->
send_items(Host, Node, Nidx, PluginType, Options, SubJID, last)
end,
lists:usort(Subs)).
send_last_pep_items(RecipientJID, RecipientPid,
#state{host = Host, ignore_pep_from_offline = IgnorePepFromOffline}) ->
RecipientLJID = jid:to_lower(RecipientJID),
[send_last_item_to_jid(NodeOwnerJID, Node, RecipientLJID) ||
NodeOwnerJID <- get_contacts_for_sending_last_item(RecipientPid, IgnorePepFromOffline),
Node <- get_nodes_for_sending_last_item(Host, NodeOwnerJID)],
ok.
get_contacts_for_sending_last_item(RecipientPid, IgnorePepFromOffline) ->
case catch ejabberd_c2s:get_subscribed(RecipientPid) of
Contacts when is_list(Contacts) ->
[jid:make(Contact) ||
Contact = {U, S, _R} <- Contacts,
user_resources(U, S) /= [] orelse not IgnorePepFromOffline];
_ ->
[]
end.
send_last_items_from_owner(Host, NodeOwner, _Recipient = {U, S, Resources}) ->
[send_last_item_to_jid(NodeOwner, Node, {U, S, R}) ||
Node <- get_nodes_for_sending_last_item(Host, NodeOwner),
R <- Resources],
ok.
get_nodes_for_sending_last_item(Host, NodeOwnerJID) ->
lists:filter(fun(#pubsub_node{options = Options}) ->
match_option(Options, send_last_published_item, on_sub_and_presence)
end,
get_nodes_owned_by(Host, NodeOwnerJID)).
get_nodes_owned_by(Host, OwnerJID) ->
OwnerBLJID = jid:to_bare(jid:to_lower(OwnerJID)),
tree_action(Host, get_nodes, [OwnerBLJID, OwnerJID]).
send_last_item_to_jid(NodeOwner, #pubsub_node{nodeid = {_, Node}, type = NodeType,
id = Nidx, options = NodeOptions}, RecipientJID) ->
NodeOwnerBLJID = jid:to_bare(jid:to_lower(NodeOwner)),
case is_subscribed(RecipientJID, NodeOwnerBLJID, NodeOptions) of
true -> send_items(NodeOwnerBLJID, Node, Nidx, NodeType, NodeOptions, RecipientJID, last);
false -> ok
end.
is_subscribed(Recipient, NodeOwner, NodeOptions) ->
case get_option(NodeOptions, access_model) of
open -> true;
presence -> true;
whitelist -> false; % subscribers are added manually
authorize -> false; % likewise
roster ->
Grps = get_option(NodeOptions, roster_groups_allowed, []),
{OU, OS, _} = NodeOwner,
element(2, get_roster_info(OU, OS, Recipient, Grps))
end.
%% -------
%% disco hooks handling functions
%%
-spec disco_local_identity(
Acc :: [exml:element()],
_From ::jid:jid(),
To ::jid:jid(),
Node :: <<>> | mod_pubsub:nodeId(),
Lang :: binary())
-> [exml:element()].
disco_local_identity(Acc, _From, To, Node, Lang) ->
LServer = To#jid.lserver,
disco_local_identity(Acc, LServer, Node, Lang).
disco_local_identity(Acc, Host, <<>>, _Lang) ->
PepIdentity =
#xmlel{name = <<"identity">>,
attrs = [{<<"category">>, <<"pubsub">>},
{<<"type">>, ?PEPNODE}]},
PushIdentity =
#xmlel{name = <<"identity">>,
attrs = [{<<"category">>, <<"pubsub">>},
{<<"type">>, ?PUSHNODE}]},
HasPep = lists:member(?PEPNODE, plugins(Host)),
HasPush = lists:member(?PUSHNODE, plugins(Host)),
Plugins = [{HasPep, PepIdentity}, {HasPush, PushIdentity}],
lists:foldl(
fun
({true, El}, AccIn) ->
[El | AccIn];
({false, _}, AccIn) ->
AccIn
end, Acc, Plugins);
disco_local_identity(Acc, _Host, _Node, _Lang) ->
Acc.
-spec disco_local_features(
Acc :: [exml:element()],
_From ::jid:jid(),
To ::jid:jid(),
Node :: <<>> | mod_pubsub:nodeId(),
Lang :: binary())
-> [binary(), ...].
disco_local_features(Acc, _From, To, <<>>, _Lang) ->
Host = To#jid.lserver,
Feats = case Acc of
{result, I} -> I;
_ -> []
end,
{result, Feats ++ [feature(F) || F <- features(Host, <<>>)]};
disco_local_features(Acc, _From, _To, _Node, _Lang) ->
Acc.
disco_local_items(Acc, _From, _To, <<>>, _Lang) -> Acc;
disco_local_items(Acc, _From, _To, _Node, _Lang) -> Acc.
-spec disco_sm_identity(
Acc :: empty | [exml:element()],
From ::jid:jid(),
To ::jid:jid(),
Node :: mod_pubsub:nodeId(),
Lang :: binary())
-> [exml:element()].
disco_sm_identity(empty, From, To, Node, Lang) ->
disco_sm_identity([], From, To, Node, Lang);
disco_sm_identity(Acc, From, To, Node, _Lang) ->
disco_identity(jid:to_lower(jid:to_bare(To)), Node, From)
++ Acc.
disco_identity(error, _Node, _From) ->
[];
disco_identity(_Host, <<>>, _From) ->
[#xmlel{name = <<"identity">>,
attrs = [{<<"category">>, <<"pubsub">>},
{<<"type">>, <<"pep">>}]}];
disco_identity(Host, Node, From) ->
Action = fun (#pubsub_node{id = Nidx, type = Type, options = Options, owners = O}) ->
Owners = node_owners_call(Host, Type, Nidx, O),
case get_allowed_items_call(Host, Nidx, From, Type, Options, Owners) of
{result, _} ->
{result, [#xmlel{name = <<"identity">>,
attrs = [{<<"category">>, <<"pubsub">>},
{<<"type">>, <<"pep">>}]},
#xmlel{name = <<"identity">>,
attrs = [{<<"category">>, <<"pubsub">>},
{<<"type">>, <<"leaf">>}
| case get_option(Options, title) of
false -> [];
[Title] -> [{<<"name">>, Title}]
end]}]};
_ ->
{result, []}
end
end,
case dirty(Host, Node, Action, ?FUNCTION_NAME) of
{result, {_, Result}} -> Result;
_ -> []
end.
-spec disco_sm_features(
Acc :: empty | {result, Features::[Feature::binary()]},
From ::jid:jid(),
To ::jid:jid(),
Node :: mod_pubsub:nodeId(),
Lang :: binary())
-> {result, Features::[Feature::binary()]}.
disco_sm_features(empty, From, To, Node, Lang) ->
disco_sm_features({result, []}, From, To, Node, Lang);
disco_sm_features({result, OtherFeatures} = _Acc, From, To, Node, _Lang) ->
{result,
OtherFeatures ++
disco_features(jid:to_lower(jid:to_bare(To)), Node, From)};
disco_sm_features(Acc, _From, _To, _Node, _Lang) -> Acc.
disco_features(error, _Node, _From) ->
[];
disco_features(Host, <<>>, _From) ->
[?NS_PUBSUB | [feature(F) || F <- plugin_features(Host, <<"pep">>)]];
disco_features(Host, Node, From) ->
Action = fun (#pubsub_node{id = Nidx, type = Type, options = Options, owners = O}) ->
Owners = node_owners_call(Host, Type, Nidx, O),
case get_allowed_items_call(Host, Nidx, From, Type, Options, Owners) of
{result, _} ->
{result, [?NS_PUBSUB | [feature(F)
|| F <- plugin_features(Host, <<"pep">>)]]};
_ ->
{result, []}
end
end,
case dirty(Host, Node, Action, ?FUNCTION_NAME) of
{result, {_, Result}} -> Result;
_ -> []
end.
-spec disco_sm_items(Acc :: empty | {result, [exml:element()]},
From ::jid:jid(),
To ::jid:jid(),
Node :: mod_pubsub:nodeId(),
Lang :: binary()) -> {result, [exml:element()]}.
disco_sm_items(empty, From, To, Node, Lang) ->
disco_sm_items({result, []}, From, To, Node, Lang);
disco_sm_items({result, OtherItems}, From, To, Node, _Lang) ->
{result, lists:usort(OtherItems ++
disco_items(jid:to_lower(jid:to_bare(To)), Node, From))};
disco_sm_items(Acc, _From, _To, _Node, _Lang) -> Acc.
-spec disco_items(
Host :: mod_pubsub:host(),
Node :: mod_pubsub:nodeId(),
From :: jid:jid())
-> [exml:element()].
disco_items(Host, <<>>, From) ->
Action = fun (#pubsub_node{nodeid = {_, Node},
options = Options, type = Type, id = Nidx, owners = O},
Acc) ->
Owners = node_owners_call(Host, Type, Nidx, O),
case get_allowed_items_call(Host, Nidx, From, Type, Options, Owners) of
{result, _} ->
[#xmlel{name = <<"item">>,
attrs = [{<<"node">>, (Node)},
{<<"jid">>, jid:to_binary(Host)}
| case get_option(Options, title) of
false -> [];
[Title] -> [{<<"name">>, Title}]
end]}
| Acc];
_ ->
Acc
end
end,
NodeBloc = fun() ->
{result,
lists:foldl(Action, [], tree_call(Host, get_nodes, [Host]))}
end,
ErrorDebug = #{
action => disco_items,
pubsub_host => Host,
from => From
},
case mod_pubsub_db_backend:dirty(NodeBloc, ErrorDebug) of
{result, Items} -> Items;
_ -> []
end;
disco_items(Host, Node, From) ->
Action = fun (#pubsub_node{id = Nidx, type = Type, options = Options, owners = O}) ->
Owners = node_owners_call(Host, Type, Nidx, O),
case get_allowed_items_call(Host, Nidx, From, Type, Options, Owners) of
{result, Items} ->
{result, [#xmlel{name = <<"item">>,
attrs = [{<<"jid">>, jid:to_binary(Host)},
{<<"name">>, ItemId}]}
|| #pubsub_item{itemid = {ItemId, _}} <- Items]};
_ ->
{result, []}
end
end,
case dirty(Host, Node, Action, ?FUNCTION_NAME) of
{result, {_, Result}} -> Result;
_ -> []
end.
%% -------
%% callback that prevents routing subscribe authorizations back to the sender
%%
handle_pep_authorization_response({From, To, Acc, #xmlel{ name = Name } = Packet}) ->
Type = mongoose_acc:stanza_type(Acc),
handle_pep_authorization_response(Name, Type, From, To, Acc, Packet).
handle_pep_authorization_response(_, <<"error">>, From, To, Acc, Packet) ->
{From, To, Acc, Packet};
handle_pep_authorization_response(<<"message">>, _, From, To, Acc, Packet)
when From#jid.luser == To#jid.luser, From#jid.lserver == To#jid.lserver ->
case find_authorization_response(Packet) of
none -> {From, To, Acc, Packet};
invalid -> {From, To, Acc, Packet};
XFields ->
handle_authorization_response(jid:to_lower(To), From, To, Packet, XFields),
drop
end;
handle_pep_authorization_response(_, _, From, To, Acc, Packet) ->
{From, To, Acc, Packet}.
%% -------
%% presence hooks handling functions
%%
caps_recognised(Acc, #jid{ lserver = S } = JID, Pid, _Features) ->
notify_send_loop(S, {send_last_pep_items, JID, Pid}),
Acc.
presence_probe(Acc, #jid{luser = _U, lserver = S, lresource = _R} = JID, JID, _Pid) ->
notify_send_loop(S, {send_last_pubsub_items, _Recipient = JID}),
Acc;
presence_probe(Acc, _Host, _JID, _Pid) ->
Acc.
notify_send_loop(ServerHost, Action) ->
{SendLoop, _} = case whereis(gen_mod:get_module_proc(ServerHost, ?LOOPNAME)) of
undefined -> init_send_loop(ServerHost);
Pid -> {Pid, undefined}
end,
SendLoop ! Action.
%% -------
%% subscription hooks handling functions
%%
-spec out_subscription(Acc:: mongoose_acc:t(),
User :: binary(),
Server :: binary(),
JID ::jid:jid(),
Type :: mod_roster:sub_presence()) ->
mongoose_acc:t().
out_subscription(Acc, User, Server, JID, subscribed) ->
Owner = jid:make(User, Server, <<>>),
{PUser, PServer, PResource} = jid:to_lower(JID),
PResources = case PResource of
<<>> -> user_resources(PUser, PServer);
_ -> [PResource]
end,
notify_send_loop(Server, {send_last_items_from_owner, Owner, {PUser, PServer, PResources}}),
Acc;
out_subscription(Acc, _, _, _, _) ->
Acc.
-spec in_subscription(Acc:: mongoose_acc:t(),
User :: binary(),
Server :: binary(),
JID ::jid:jid(),
Type :: mod_roster:sub_presence(),
_:: any()) ->
mongoose_acc:t().
in_subscription(Acc, User, Server, Owner, unsubscribed, _) ->
unsubscribe_user(jid:make(User, Server, <<>>), Owner),
Acc;
in_subscription(Acc, _, _, _, _, _) ->
Acc.
unsubscribe_user(Entity, Owner) ->
ServerHosts = lists:usort(lists:foldl(
fun(UserHost, Acc) ->
case gen_mod:is_loaded(UserHost, mod_pubsub) of
true -> [UserHost|Acc];
false -> Acc
end
end, [], [Entity#jid.lserver, Owner#jid.lserver])),
spawn(fun() -> [unsubscribe_user(ServerHost, Entity, Owner) || ServerHost <- ServerHosts] end).
unsubscribe_user(Host, Entity, Owner) ->
BJID = jid:to_lower(jid:to_bare(Owner)),
lists:foreach(fun (PType) ->
unsubscribe_user_per_plugin(Host, Entity, BJID, PType)
end, plugins(Host)).
unsubscribe_user_per_plugin(Host, Entity, BJID, PType) ->
{result, Subs} = node_action(Host, PType, get_entity_subscriptions, [Host, Entity]),
lists:foreach(fun({#pubsub_node{options = Options, owners = O, id = Nidx},
subscribed, _, JID}) ->
Unsubscribe = match_option(Options, access_model, presence)
andalso lists:member(BJID, node_owners_action(Host, PType, Nidx, O)),
case Unsubscribe of
true ->
node_action(Host, PType,
unsubscribe_node, [Nidx, Entity, JID, all]);
false ->
ok
end;
(_) ->
ok
end, Subs).
%% -------
%% user remove hook handling function
%%
remove_user(Acc, User, Server) ->
remove_user(User, Server),
Acc.
remove_user(User, Server) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
Entity = jid:make(LUser, LServer, <<>>),
Host = host(LServer),
HomeTreeBase = <<"/home/", LServer/binary, "/", LUser/binary>>,
spawn(fun() -> lists:foreach(
fun(PType) ->
catch remove_user_per_plugin(PType, Host, Entity, HomeTreeBase)
end, plugins(Host)) end).
remove_user_per_plugin(PType, Host, Entity, HomeTreeBase) ->
{result, Subs} = node_action(Host, PType, get_entity_subscriptions, [Host, Entity]),
lists:foreach(fun({#pubsub_node{id = Nidx}, _, _, JID}) ->
node_action(Host, PType, unsubscribe_node, [Nidx, Entity, JID, all]);
(_) ->
ok
end, Subs),
{result, Affs} = node_action(Host, PType, get_entity_affiliations, [Host, Entity]),
lists:foreach(fun({#pubsub_node{nodeid = {H, N}, parents = []}, owner}) ->
delete_node(H, N, Entity);
({#pubsub_node{nodeid = {H, N}, type = Type}, owner})
when N == HomeTreeBase, Type == <<"hometree">> ->
delete_node(H, N, Entity);
({#pubsub_node{id = Nidx}, publisher}) ->
node_action(Host, PType,
set_affiliation,
[Nidx, Entity, none]);
(_) ->
ok
end, Affs).
handle_call(server_host, _From, State) ->
{reply, State#state.server_host, State};
handle_call(plugins, _From, State) ->
{reply, State#state.plugins, State};
handle_call(pep_mapping, _From, State) ->
{reply, State#state.pep_mapping, State};
handle_call(nodetree, _From, State) ->
{reply, State#state.nodetree, State};
handle_call(stop, _From, State) ->
{stop, normal, ok, State}.
%%--------------------------------------------------------------------
%% Function: handle_cast(Msg, State) -> {noreply, State} |
%% {noreply, State, Timeout} |
%% {stop, Reason, State}
%% Description: Handling cast messages
%%--------------------------------------------------------------------
%% @private
handle_cast(_Msg, State) -> {noreply, State}.
%%--------------------------------------------------------------------
%% Function: handle_info(Info, State) -> {noreply, State} |
%% {noreply, State, Timeout} |
%% {stop, Reason, State}
%% Description: Handling all non call/cast messages
%%--------------------------------------------------------------------
%% @private
handle_info(_Info, State) ->
{noreply, State}.
%%--------------------------------------------------------------------
%% Function: terminate(Reason, State) -> void()
%% Description: This function is called by a gen_server when it is about to
%% terminate. It should be the opposite of Module:init/1 and do any necessary
%% cleaning up. When it returns, the gen_server terminates with Reason.
%% The return value is ignored.
%%--------------------------------------------------------------------
%% @private
terminate(_Reason, #state{host = Host, server_host = ServerHost,
nodetree = TreePlugin, plugins = Plugins}) ->
ejabberd_router:unregister_route(Host),
case lists:member(?PEPNODE, Plugins) of
true ->
delete_hooks(ServerHost, pep_hooks()),
delete_pep_iq_handlers(ServerHost);
false -> ok
end,
delete_hooks(ServerHost, hooks()),
mod_disco:unregister_feature(ServerHost, ?NS_PUBSUB),
case whereis(gen_mod:get_module_proc(ServerHost, ?LOOPNAME)) of
undefined ->
?ERROR_MSG("~s process is dead, pubsub was broken", [?LOOPNAME]);
Pid ->
Pid ! stop
end,
terminate_plugins(Host, ServerHost, Plugins, TreePlugin),
mod_pubsub_db_backend:stop().
%%--------------------------------------------------------------------
%% Func: code_change(OldVsn, State, Extra) -> {ok, NewState}
%% Description: Convert process state when code is changed
%%--------------------------------------------------------------------
%% @private
code_change(_OldVsn, State, _Extra) -> {ok, State}.
-spec do_route(
ServerHost :: binary(),
Access :: atom(),
Plugins :: [binary(), ...],
Host :: mod_pubsub:hostPubsub(),
From ::jid:jid(),
To ::jid:jid(),
Packet :: exml:element())
-> ok.
%%--------------------------------------------------------------------
%%% Internal functions
%%--------------------------------------------------------------------
do_route(ServerHost, Access, Plugins, Host, From,
#jid{luser = <<>>, lresource = <<>>} = To,
#xmlel{ name = <<"iq">> } = Packet) ->
case jlib:iq_query_info(Packet) of
#iq{type = get, xmlns = ?NS_DISCO_INFO, sub_el = SubEl, lang = Lang} = IQ ->
#xmlel{attrs = QAttrs} = SubEl,
Node = xml:get_attr_s(<<"node">>, QAttrs),
Info = ejabberd_hooks:run_fold(disco_info, ServerHost,
[],
[ServerHost, ?MODULE, <<>>, <<>>]),
Res = case iq_disco_info(Host, Node, From, Lang) of
{result, IQRes} ->