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mod_push: Optionally include message sender/body
Add 'include_sender' and 'include_body' options. If one or both of them are set to 'true', a urn:xmpp:push:summary form with the enabled field(s) is included in push notifications that are generated for messages with a body. The 'include_body' option can instead be set to a static text. In this case, the specified text will be included in place of the actual message body. This can be useful to signal the push service whether the notification was triggered by a message with body (as opposed to other types of traffic) without leaking actual message contents.
This commit is contained in:
Holger Weiss
parent
48c5ab59f1
commit
de7dc4affa
@ -25,7 +25,7 @@
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{fast_tls, ".*", {git, "https://github.com/processone/fast_tls", "a166f0e"}},
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{stringprep, ".*", {git, "https://github.com/processone/stringprep", {tag, "1.0.11"}}},
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{fast_xml, ".*", {git, "https://github.com/processone/fast_xml", {tag, "1.1.29"}}},
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{xmpp, ".*", {git, "https://github.com/processone/xmpp", "bb88d59"}},
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{xmpp, ".*", {git, "https://github.com/processone/xmpp", "626a28e"}},
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{fast_yaml, ".*", {git, "https://github.com/processone/fast_yaml", {tag, "1.0.13"}}},
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{jiffy, ".*", {git, "https://github.com/davisp/jiffy", {tag, "0.14.8"}}},
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{p1_oauth2, ".*", {git, "https://github.com/processone/p1_oauth2", {tag, "0.6.2"}}},
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113
src/mod_push.erl
113
src/mod_push.erl
@ -44,7 +44,7 @@
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-export([get_commands_spec/0, delete_old_sessions/1]).
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%% API (used by mod_push_keepalive).
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-export([notify/1, notify/3, notify/5]).
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-export([notify/2, notify/4, notify/6]).
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%% For IQ callbacks
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-export([delete_session/3]).
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@ -125,6 +125,12 @@ depends(_Host, _Opts) ->
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[].
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-spec mod_opt_type(atom()) -> fun((term()) -> term()) | [atom()].
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mod_opt_type(include_sender) ->
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fun (B) when is_boolean(B) -> B end;
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mod_opt_type(include_body) ->
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fun (B) when is_boolean(B) -> B;
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(S) -> iolist_to_binary(S)
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end;
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mod_opt_type(db_type) ->
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fun(T) -> ejabberd_config:v_db(?MODULE, T) end;
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mod_opt_type(O) when O == cache_life_time; O == cache_size ->
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@ -136,7 +142,9 @@ mod_opt_type(O) when O == use_cache; O == cache_missed ->
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-spec mod_options(binary()) -> [{atom(), any()}].
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mod_options(Host) ->
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[{db_type, ejabberd_config:default_db(Host, ?MODULE)},
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[{include_sender, false},
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{include_body, false},
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{db_type, ejabberd_config:default_db(Host, ?MODULE)},
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{use_cache, ejabberd_config:use_cache(Host)},
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{cache_size, ejabberd_config:cache_size(Host)},
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{cache_missed, ejabberd_config:cache_missed(Host)},
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@ -336,9 +344,9 @@ disable(#jid{luser = LUser, lserver = LServer, lresource = LResource} = JID,
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c2s_stanza(State, #stream_error{}, _SendResult) ->
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State;
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c2s_stanza(#{push_enabled := true, mgmt_state := pending} = State,
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_Pkt, _SendResult) ->
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Pkt, _SendResult) ->
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?DEBUG("Notifying client of stanza", []),
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notify(State),
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notify(State, Pkt),
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State;
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c2s_stanza(State, _Pkt, _SendResult) ->
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State.
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@ -351,7 +359,7 @@ mam_message(#message{} = Pkt, LUser, LServer, _Peer, chat, _Dir) ->
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case drop_online_sessions(LUser, LServer, Clients) of
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[_|_] = Clients1 ->
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?DEBUG("Notifying ~s@~s of MAM message", [LUser, LServer]),
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notify(LUser, LServer, Clients1);
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notify(LUser, LServer, Clients1, Pkt);
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[] ->
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ok
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end;
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@ -369,7 +377,7 @@ offline_message(#message{to = #jid{luser = LUser, lserver = LServer}} = Pkt) ->
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case lookup_sessions(LUser, LServer) of
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{ok, [_|_] = Clients} ->
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?DEBUG("Notifying ~s@~s of offline message", [LUser, LServer]),
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notify(LUser, LServer, Clients);
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notify(LUser, LServer, Clients, Pkt);
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_ ->
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ok
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end,
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@ -380,7 +388,8 @@ c2s_session_pending(#{push_enabled := true, mgmt_queue := Queue} = State) ->
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case p1_queue:len(Queue) of
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Len when Len > 0 ->
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?DEBUG("Notifying client of unacknowledged stanza(s)", []),
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notify(State),
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Pkt = queue_find(fun is_message_with_body/1, Queue),
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notify(State, Pkt),
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State;
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0 ->
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State
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@ -412,17 +421,18 @@ remove_user(LUser, LServer) ->
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%%--------------------------------------------------------------------
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%% Generate push notifications.
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%%--------------------------------------------------------------------
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-spec notify(c2s_state()) -> ok.
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notify(#{jid := #jid{luser = LUser, lserver = LServer}, sid := {TS, _}}) ->
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-spec notify(c2s_state(), xmpp_element() | xmlel() | none) -> ok.
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notify(#{jid := #jid{luser = LUser, lserver = LServer}, sid := {TS, _}}, Pkt) ->
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case lookup_session(LUser, LServer, TS) of
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{ok, Client} ->
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notify(LUser, LServer, [Client]);
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notify(LUser, LServer, [Client], Pkt);
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_Err ->
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ok
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end.
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-spec notify(binary(), binary(), [push_session()]) -> ok.
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notify(LUser, LServer, Clients) ->
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-spec notify(binary(), binary(), [push_session()],
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xmpp_element() | xmlel() | none) -> ok.
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notify(LUser, LServer, Clients, Pkt) ->
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lists:foreach(
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fun({TS, PushLJID, Node, XData}) ->
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HandleResponse = fun(#iq{type = result}) ->
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@ -433,14 +443,16 @@ notify(LUser, LServer, Clients) ->
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(timeout) ->
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ok % Hmm.
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end,
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notify(LServer, PushLJID, Node, XData, HandleResponse)
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notify(LServer, PushLJID, Node, XData, Pkt, HandleResponse)
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end, Clients).
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-spec notify(binary(), ljid(), binary(), xdata(),
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xmpp_element() | xmlel() | none,
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fun((iq() | timeout) -> any())) -> ok.
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notify(LServer, PushLJID, Node, XData, HandleResponse) ->
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notify(LServer, PushLJID, Node, XData, Pkt, HandleResponse) ->
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From = jid:make(LServer),
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Item = #ps_item{sub_els = [#push_notification{}]},
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Summary = make_summary(LServer, Pkt),
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Item = #ps_item{sub_els = [#push_notification{xdata = Summary}]},
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PubSub = #pubsub{publish = #ps_publish{node = Node, items = [Item]},
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publish_options = XData},
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IQ = #iq{type = set,
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@ -571,6 +583,77 @@ drop_online_sessions(LUser, LServer, Clients) ->
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[Client || {TS, _, _, _} = Client <- Clients,
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lists:keyfind(TS, 1, SessIDs) == false].
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-spec queue_find(fun((stanza()) -> boolean()), p1_queue:queue())
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-> stanza() | none.
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queue_find(Pred, Queue) ->
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case p1_queue:out(Queue) of
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{{value, {_, _, Pkt}}, Queue1} ->
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case Pred(Pkt) of
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true ->
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Pkt;
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false ->
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queue_find(Pred, Queue1)
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end;
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{empty, _Queue1} ->
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none
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end.
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-spec make_summary(binary(), xmpp_element() | xmlel() | none)
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-> xdata() | undefined.
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make_summary(Host, #message{from = From} = Pkt) ->
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case {gen_mod:get_module_opt(Host, ?MODULE, include_sender),
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gen_mod:get_module_opt(Host, ?MODULE, include_body)} of
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{false, false} ->
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undefined;
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{IncludeSender, IncludeBody} ->
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case get_body_text(Pkt) of
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none ->
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undefined;
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Text ->
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Fields1 = case IncludeBody of
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StaticText when is_binary(StaticText) ->
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[{'last-message-body', StaticText}];
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true ->
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[{'last-message-body', Text}];
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false ->
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[]
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end,
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Fields2 = case IncludeSender of
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true ->
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[{'last-message-sender', From} | Fields1];
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false ->
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Fields1
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end,
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#xdata{type = submit, fields = push_summary:encode(Fields2)}
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end
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end;
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make_summary(_Host, _Pkt) ->
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undefined.
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-spec is_message_with_body(stanza()) -> boolean().
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is_message_with_body(#message{} = Msg) ->
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get_body_text(Msg) /= none;
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is_message_with_body(_Stanza) ->
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false.
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-spec get_body_text(message()) -> binary() | none.
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get_body_text(#message{body = Body} = Msg) ->
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case xmpp:get_text(Body) of
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Text when byte_size(Text) > 0 ->
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Text;
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<<>> ->
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case body_is_encrypted(Msg) of
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true ->
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<<"(encrypted)">>;
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false ->
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none
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end
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end.
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-spec body_is_encrypted(message()) -> boolean().
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body_is_encrypted(#message{sub_els = SubEls}) ->
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lists:keyfind(<<"encrypted">>, #xmlel.name, SubEls) /= false.
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%%--------------------------------------------------------------------
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%% Caching.
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%%--------------------------------------------------------------------
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@ -184,7 +184,7 @@ c2s_handle_cast(State, _Msg) ->
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c2s_handle_info(#{push_enabled := true, mgmt_state := pending,
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jid := JID} = State, {timeout, _, push_keepalive}) ->
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?INFO_MSG("Waking ~s before session times out", [jid:encode(JID)]),
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mod_push:notify(State),
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mod_push:notify(State, none),
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{stop, State};
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c2s_handle_info(State, _) ->
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State.
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@ -229,7 +229,7 @@ wake_all(LServer) ->
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IgnoreResponse = fun(_) -> ok end,
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lists:foreach(fun({_, PushLJID, Node, XData}) ->
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mod_push:notify(LServer, PushLJID, Node,
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XData, IgnoreResponse)
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XData, none, IgnoreResponse)
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end, Sessions);
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error ->
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error
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