Improve handling of PEP sent to external contacts (EJAB-825)

SVN Revision: 1751

ChangeLog

@@ -1,3 +1,9 @@
+2008-12-23  Christophe Romain <christophe.romain@process-one.net>
+
+	* src/mod_pubsub/mod_pubsub.erl: Improve handling of PEP sent to
+	external contacts (EJAB-825)
+	* src/mod_caps.erl: Likewise
+
 2008-12-19  Christophe Romain <christophe.romain@process-one.net>
 
 	* src/mod_pubsub/mod_pubsub.erl: Fix send_last_published_item issue

src/mod_caps.erl

@@ -35,6 +35,7 @@
 	 note_caps/3,
 	 clear_caps/1,
 	 get_features/2,
+	 get_user_resource/2,
 	 handle_disco_response/3]).
 
 %% gen_mod callbacks
@@ -61,6 +62,7 @@
 -record(caps, {node, version, exts}).
 -record(caps_features, {node_pair, features}).
 -record(user_caps, {jid, caps}).
+-record(user_caps_default, {uid, resource}).
 -record(state, {host,
 		disco_requests = ?DICT:new(),
 		feature_queries = []}).
@@ -84,8 +86,9 @@ read_caps([], Result) ->
     Result.
 
 %% get_caps reads user caps from database
-get_caps(JID) ->
+get_caps({U, S, R}) ->
-    case catch mnesia:dirty_read({user_caps, list_to_binary(exmpp_jid:jid_to_list(JID))}) of
+    BJID = exmpp_jlib:jid_to_binary(U, S, R),
+    case catch mnesia:dirty_read({user_caps, BJID}) of
 	[#user_caps{caps=Caps}] -> 
 	    Caps;
 	_ -> 
@@ -93,8 +96,26 @@ get_caps(JID) ->
     end.
 
 %% clear_caps removes user caps from database
-clear_caps(JID) ->
+clear_caps({U, S, R}) ->
-    catch mnesia:dirty_delete({user_caps, list_to_binary(exmpp_jid:jid_to_list(JID))}).
+    BJID = exmpp_jlib:jid_to_binary(U, S, R),
+    BUID = exmpp_jlib:jid_to_binary(U, S),
+    catch mnesia:dirty_delete({user_caps, BJID}),
+    case catch mnesia:dirty_read({user_caps_default, BUID}) of
+	[#user_caps_default{resource=R}] ->
+	    catch mnesia:dirty_delete({user_caps_default, BUID});
+	_ ->
+	    ok
+    end.
+  
+%% give default user resource
+get_user_resource(U, S) ->
+    BUID = exmpp_jlib:bare_jid_to_binary(U, S),
+    case catch mnesia:dirty_read({user_caps_default, BUID}) of
+	[#user_caps_default{resource=R}] ->
+	    R;
+	_ ->
+	    []
+    end.
 
 %% note_caps should be called to make the module request disco
 %% information.  Host is the host that asks, From is the full JID that
@@ -113,7 +134,8 @@ note_caps(Host, From, Caps) ->
 %% timeout error.
 get_features(Host, Caps) ->
     case Caps of
-	nothing -> [];
+	nothing -> 
+	    [];
 	#caps{} ->
 	    Proc = gen_mod:get_module_proc(Host, ?PROCNAME),
 	    gen_server:call(Proc, {get_features, Caps})
@@ -149,6 +171,9 @@ init([Host, _Opts]) ->
     mnesia:create_table(user_caps,
 			[{disc_copies, [node()]},
 			 {attributes, record_info(fields, user_caps)}]),
+    mnesia:create_table(user_caps_default,
+			[{disc_copies, [node()]},
+			 {attributes, record_info(fields, user_caps_default)}]),
     {ok, #state{host = Host}}.
 
 maybe_get_features(#caps{node = Node, version = Version, exts = Exts}) ->
@@ -200,8 +225,17 @@ handle_cast({note_caps, From,
 	    #state{host = Host, disco_requests = Requests} = State) ->
     %% XXX: this leads to race conditions where ejabberd will send
     %% lots of caps disco requests.
-    mnesia:dirty_write(#user_caps{jid = list_to_binary(exmpp_jid:jid_to_list(From)),
+    #jid{node = U, domain = S, resource = R} = From,
-				  caps = Caps}),
+    BJID = exmpp_jlib:jid_to_binary(From),
+    mnesia:dirty_write(#user_caps{jid = BJID, caps = Caps}),
+    case ejabberd_sm:get_user_resources(U, S) of
+	[] ->
+	    ok;
+	_ -> 
+	    % only store default resource of external contacts
+	    BUID = exmpp_jlib:bare_jid_to_binary(From),
+	    mnesia:dirty_write(#user_caps_default{uid = BUID, resource = R})
+    end,
     SubNodes = [Version | Exts],
     %% Now, find which of these are not already in the database.
     Fun = fun() ->

src/mod_pubsub/mod_pubsub.erl

@@ -2389,20 +2389,15 @@ broadcast_by_caps({LUser, LServer, LResource}, Node, _Type, Stanza) ->
 	    %%ReplyTo = jlib:make_jid(LUser, LServer, SenderResource),  % This has to be used
 	    case catch ejabberd_c2s:get_subscribed(C2SPid) of
 		Contacts when is_list(Contacts) ->
-		    Online = lists:foldl(fun({U, S, R}, Acc) ->
-				case user_resource(U, S, R) of
-				    [] -> Acc;
-				    OR -> [{U, S, OR}|Acc]
-				end
-			    end, [], Contacts),
 		    lists:foreach(fun({U, S, R}) ->
-			case is_caps_notify(LServer, Node, {U, S, R}) of
+			OR = user_resource(U, S, R), 
+			case is_caps_notify(LServer, Node, {U, S, OR}) of
 			    true ->
-				ejabberd_router ! {route, Sender, exmpp_jid:make_jid(U, S, R), Stanza};
+				ejabberd_router ! {route, Sender, exmpp_jid:make_jid(U, S, OR), Stanza};
 			    false ->
 				ok
 			end
-		    end, Online);
+		    end, Contacts);
 		_ ->
 		    ok
 	    end,
@@ -2414,20 +2409,27 @@ broadcast_by_caps({LUser, LServer, LResource}, Node, _Type, Stanza) ->
 broadcast_by_caps(_, _, _, _) ->
     ok.
   
-user_resource(LUser, LServer, []) ->
 %% If we don't know the resource, just pick first if any
+%% If no resource available, check if caps anyway (remote online)
+user_resource(LUser, LServer, []) ->
     case ejabberd_sm:get_user_resources(LUser, LServer) of
-	[R|_] -> R;
+	[R|_] -> 
-	[] -> []
+	    R;
+	[] -> 
+	    mod_caps:get_user_resource(LUser, LServer)
     end;
 user_resource(_, _, LResource) ->
     LResource.
 
 is_caps_notify(Host, Node, LJID) ->
-    Caps = mod_caps:get_caps(LJID),
+    case mod_caps:get_caps(LJID) of
+	nothing -> 
+	    false;
+	Caps ->
 	    case catch mod_caps:get_features(Host, Caps) of
 		Features when is_list(Features) -> lists:member(Node ++ "+notify", Features);
 		_ -> false
+	    end
     end.
 
 %%%%%%% Configuration handling