%%% ==================================================================== %%% ``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 2006-2011, ProcessOne %%% All Rights Reserved.'' %%% This software is copyright 2006-2011, ProcessOne. %%% %%% @copyright 2006-2011 ProcessOne %%% @author Christophe Romain %%% [http://www.process-one.net/] %%% @version {@vsn}, {@date} {@time} %%% @end %%% ==================================================================== %%% @doc The module {@module} is the core of the PubSub %%% extension. It relies on PubSub plugins for a large part of its functions. %%% %%% @headerfile "pubsub.hrl" %%% %%% @reference See XEP-0060: Pubsub 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). Subscriptions and options are %%% stored in the pubsub_subscription table, with a link to them provided %%% by the subscriptions field of pubsub_state. For information on %%% subscription-options and mulit-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). -author('christophe.romain@process-one.net'). -version('1.13-0'). -behaviour(gen_server). -behaviour(gen_mod). -include("ejabberd.hrl"). -include("adhoc.hrl"). -include("jlib.hrl"). -include("pubsub.hrl"). -define(STDTREE, "tree"). -define(STDNODE, "flat"). -define(PEPNODE, "pep"). %% exports for hooks -export([presence_probe/3, caps_update/3, in_subscription/6, out_subscription/4, on_user_offline/3, remove_user/2, disco_local_identity/5, disco_local_features/5, disco_local_items/5, disco_sm_identity/5, disco_sm_features/5, disco_sm_items/5 ]). %% exported iq handlers -export([iq_sm/3 ]). %% 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/6, get_items/2, get_item/3, get_cached_item/2, get_configure/5, set_configure/5, tree_action/3, node_action/4 ]). %% general helpers for plugins -export([node_to_string/1, string_to_node/1, subscription_to_string/1, affiliation_to_string/1, string_to_subscription/1, string_to_affiliation/1, extended_error/2, extended_error/3, rename_default_nodeplugin/0 ]). %% API and gen_server callbacks -export([start_link/2, start/2, stop/1, init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3 ]). %% calls for parallel sending of last items -export([send_loop/1 ]). -define(PROCNAME, ejabberd_mod_pubsub). -define(LOOPNAME, ejabberd_mod_pubsub_loop). -define(PLUGIN_PREFIX, "node_"). -define(TREE_PREFIX, "nodetree_"). -record(state, {server_host, host, access, pep_mapping = [], ignore_pep_from_offline = true, last_item_cache = false, max_items_node = ?MAXITEMS, nodetree = ?STDTREE, plugins = [?STDNODE]}). %%==================================================================== %% API %%==================================================================== %%-------------------------------------------------------------------- %% Function: start_link() -> {ok,Pid} | ignore | {error,Error} %% Description: Starts the server %%-------------------------------------------------------------------- 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]}, transient, 1000, worker, [?MODULE]}, supervisor:start_child(ejabberd_sup, ChildSpec). stop(Host) -> Proc = gen_mod:get_module_proc(Host, ?PROCNAME), gen_server:call(Proc, stop), supervisor:delete_child(ejabberd_sup, Proc). %%==================================================================== %% gen_server callbacks %%==================================================================== %%-------------------------------------------------------------------- %% Function: init(Args) -> {ok, State} | %% {ok, State, Timeout} | %% ignore | %% {stop, Reason} %% Description: Initiates the server %%-------------------------------------------------------------------- init([ServerHost, Opts]) -> ?DEBUG("pubsub init ~p ~p",[ServerHost,Opts]), Host = gen_mod:get_opt_host(ServerHost, Opts, "pubsub.@HOST@"), Access = gen_mod:get_opt(access_createnode, Opts, all), PepOffline = gen_mod:get_opt(ignore_pep_from_offline, Opts, true), IQDisc = gen_mod:get_opt(iqdisc, Opts, one_queue), LastItemCache = gen_mod:get_opt(last_item_cache, Opts, false), MaxItemsNode = gen_mod:get_opt(max_items_node, Opts, ?MAXITEMS), pubsub_index:init(Host, ServerHost, Opts), ets:new(gen_mod:get_module_proc(Host, config), [set, named_table]), ets:new(gen_mod:get_module_proc(ServerHost, config), [set, named_table]), {Plugins, NodeTree, PepMapping} = init_plugins(Host, ServerHost, Opts), mnesia:create_table(pubsub_last_item, [{ram_copies, [node()]}, {attributes, record_info(fields, pubsub_last_item)}]), mod_disco:register_feature(ServerHost, ?NS_PUBSUB), ets:insert(gen_mod:get_module_proc(Host, config), {nodetree, NodeTree}), ets:insert(gen_mod:get_module_proc(Host, config), {plugins, Plugins}), ets:insert(gen_mod:get_module_proc(Host, config), {last_item_cache, LastItemCache}), ets:insert(gen_mod:get_module_proc(Host, config), {max_items_node, MaxItemsNode}), 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), {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}), ejabberd_hooks:add(sm_remove_connection_hook, ServerHost, ?MODULE, on_user_offline, 75), ejabberd_hooks:add(disco_local_identity, ServerHost, ?MODULE, disco_local_identity, 75), ejabberd_hooks:add(disco_local_features, ServerHost, ?MODULE, disco_local_features, 75), ejabberd_hooks:add(disco_local_items, ServerHost, ?MODULE, disco_local_items, 75), ejabberd_hooks:add(presence_probe_hook, ServerHost, ?MODULE, presence_probe, 80), ejabberd_hooks:add(roster_in_subscription, ServerHost, ?MODULE, in_subscription, 50), ejabberd_hooks:add(roster_out_subscription, ServerHost, ?MODULE, out_subscription, 50), ejabberd_hooks:add(remove_user, ServerHost, ?MODULE, remove_user, 50), ejabberd_hooks:add(anonymous_purge_hook, ServerHost, ?MODULE, remove_user, 50), case lists:member(?PEPNODE, Plugins) of true -> ejabberd_hooks:add(caps_update, ServerHost, ?MODULE, caps_update, 80), ejabberd_hooks:add(disco_sm_identity, ServerHost, ?MODULE, disco_sm_identity, 75), ejabberd_hooks:add(disco_sm_features, ServerHost, ?MODULE, disco_sm_features, 75), ejabberd_hooks:add(disco_sm_items, ServerHost, ?MODULE, disco_sm_items, 75), 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); false -> ok end, ejabberd_router:register_route(Host), update_node_database(Host, ServerHost), update_state_database(Host, ServerHost), init_nodes(Host, ServerHost, NodeTree, Plugins), 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}, init_send_loop(ServerHost, State), {ok, State}. init_send_loop(ServerHost, State) -> Proc = gen_mod:get_module_proc(ServerHost, ?LOOPNAME), SendLoop = spawn(?MODULE, send_loop, [State]), register(Proc, SendLoop), SendLoop. %% @spec (Host, ServerHost, Opts) -> Plugins %% Host = mod_pubsub:host() Opts = [{Key,Value}] %% ServerHost = host() %% Key = atom() %% Value = term() %% Plugins = [Plugin::string()] %% @doc Call the init/1 function for each plugin declared in the config file. %% The default plugin module is implicit. %%

The Erlang code for the plugin is located in a module called %% node_plugin. The 'node_' prefix is mandatory.

%%

The modules are initialized in alphetical order and the list is checked %% and sorted to ensure that each module is initialized only once.

%%

See {@link node_hometree:init/1} for an example implementation.

init_plugins(Host, ServerHost, Opts) -> TreePlugin = list_to_atom(?TREE_PREFIX ++ gen_mod:get_opt(nodetree, Opts, ?STDTREE)), ?DEBUG("** tree plugin is ~p",[TreePlugin]), TreePlugin:init(Host, ServerHost, Opts), Plugins = gen_mod:get_opt(plugins, Opts, [?STDNODE]), PepMapping = gen_mod:get_opt(pep_mapping, Opts, []), ?DEBUG("** PEP Mapping : ~p~n",[PepMapping]), PluginsOK = lists:foldl(fun(Name, Acc) -> Plugin = list_to_atom(?PLUGIN_PREFIX ++ Name), case catch apply(Plugin, init, [Host, ServerHost, Opts]) of {'EXIT', _Error} -> Acc; _ -> ?DEBUG("** init ~s plugin",[Name]), [Name | Acc] end end, [], Plugins), {lists:reverse(PluginsOK), TreePlugin, PepMapping}. terminate_plugins(Host, ServerHost, Plugins, TreePlugin) -> lists:foreach(fun(Name) -> ?DEBUG("** terminate ~s plugin",[Name]), Plugin = list_to_atom(?PLUGIN_PREFIX++Name), Plugin:terminate(Host, ServerHost) end, Plugins), TreePlugin:terminate(Host, ServerHost), ok. init_nodes(Host, ServerHost, _NodeTree, Plugins) -> %% TODO, this call should be done plugin side case lists:member("hometree", Plugins) of true -> create_node(Host, ServerHost, string_to_node("/home"), service_jid(Host), "hometree"), create_node(Host, ServerHost, string_to_node("/home/"++ServerHost), service_jid(Host), "hometree"); false -> ok end. update_node_database(Host, ServerHost) -> mnesia:del_table_index(pubsub_node, type), mnesia:del_table_index(pubsub_node, parentid), case catch mnesia:table_info(pubsub_node, attributes) of [host_node, host_parent, info] -> ?INFO_MSG("upgrade node pubsub tables",[]), F = fun() -> {Result, LastIdx} = lists:foldl( fun({pubsub_node, NodeId, ParentId, {nodeinfo, Items, Options, Entities}}, {RecList, NodeIdx}) -> ItemsList = lists:foldl( fun({item, IID, Publisher, Payload}, Acc) -> C = {unknown, Publisher}, M = {now(), Publisher}, mnesia:write( #pubsub_item{itemid = {IID, NodeIdx}, creation = C, modification = M, payload = Payload}), [{Publisher, IID} | Acc] end, [], Items), Owners = dict:fold( fun(JID, {entity, Aff, Sub}, Acc) -> UsrItems = lists:foldl( fun({P, I}, IAcc) -> case P of JID -> [I | IAcc]; _ -> IAcc end end, [], ItemsList), mnesia:write({pubsub_state, {JID, NodeIdx}, UsrItems, Aff, Sub}), case Aff of owner -> [JID | Acc]; _ -> Acc end end, [], Entities), mnesia:delete({pubsub_node, NodeId}), {[#pubsub_node{nodeid = NodeId, id = NodeIdx, parents = [element(2, ParentId)], owners = Owners, options = Options} | RecList], NodeIdx + 1} end, {[], 1}, mnesia:match_object( {pubsub_node, {Host, '_'}, '_', '_'})), mnesia:write(#pubsub_index{index = node, last = LastIdx, free = []}), Result end, {atomic, NewRecords} = mnesia:transaction(F), {atomic, ok} = mnesia:delete_table(pubsub_node), {atomic, ok} = mnesia:create_table(pubsub_node, [{disc_copies, [node()]}, {attributes, record_info(fields, pubsub_node)}]), FNew = fun() -> lists:foreach(fun(Record) -> mnesia:write(Record) end, NewRecords) end, case mnesia:transaction(FNew) of {atomic, Result} -> ?INFO_MSG("Pubsub node tables updated correctly: ~p", [Result]); {aborted, Reason} -> ?ERROR_MSG("Problem updating Pubsub node tables:~n~p", [Reason]) end; [nodeid, parentid, type, owners, options] -> F = fun({pubsub_node, NodeId, {_, Parent}, Type, Owners, Options}) -> #pubsub_node{ nodeid = NodeId, id = 0, parents = [Parent], type = Type, owners = Owners, options = Options} end, mnesia:transform_table(pubsub_node, F, [nodeid, id, parents, type, owners, options]), FNew = fun() -> LastIdx = lists:foldl(fun(#pubsub_node{nodeid = NodeId} = PubsubNode, NodeIdx) -> mnesia:write(PubsubNode#pubsub_node{id = NodeIdx}), lists:foreach(fun(#pubsub_state{stateid = StateId} = State) -> {JID, _} = StateId, mnesia:delete({pubsub_state, StateId}), mnesia:write(State#pubsub_state{stateid = {JID, NodeIdx}}) end, mnesia:match_object(#pubsub_state{stateid = {'_', NodeId}, _ = '_'})), lists:foreach(fun(#pubsub_item{itemid = ItemId} = Item) -> {IID, _} = ItemId, {M1, M2} = Item#pubsub_item.modification, {C1, C2} = Item#pubsub_item.creation, mnesia:delete({pubsub_item, ItemId}), mnesia:write(Item#pubsub_item{itemid = {IID, NodeIdx}, modification = {M2, M1}, creation = {C2, C1}}) end, mnesia:match_object(#pubsub_item{itemid = {'_', NodeId}, _ = '_'})), NodeIdx + 1 end, 1, mnesia:match_object( {pubsub_node, {Host, '_'}, '_', '_', '_', '_', '_'}) ++ mnesia:match_object( {pubsub_node, {{'_', ServerHost, '_'}, '_'}, '_', '_', '_', '_', '_'})), mnesia:write(#pubsub_index{index = node, last = LastIdx, free = []}) end, case mnesia:transaction(FNew) of {atomic, Result} -> rename_default_nodeplugin(), ?INFO_MSG("Pubsub node tables updated correctly: ~p", [Result]); {aborted, Reason} -> ?ERROR_MSG("Problem updating Pubsub node tables:~n~p", [Reason]) end; [nodeid, id, parent, type, owners, options] -> F = fun({pubsub_node, NodeId, Id, Parent, Type, Owners, Options}) -> #pubsub_node{ nodeid = NodeId, id = Id, parents = [Parent], type = Type, owners = Owners, options = Options} end, mnesia:transform_table(pubsub_node, F, [nodeid, id, parents, type, owners, options]), rename_default_nodeplugin(); _ -> ok end, mnesia:transaction(fun() -> case catch mnesia:first(pubsub_node) of {_, L} when is_list(L) -> lists:foreach( fun({H, N}) when is_list(N) -> [Node] = mnesia:read({pubsub_node, {H, N}}), Type = Node#pubsub_node.type, BN = element(2, node_call(Type, path_to_node, [N])), BP = case [element(2, node_call(Type, path_to_node, [P])) || P <- Node#pubsub_node.parents] of [<<>>] -> []; Parents -> Parents end, mnesia:write(Node#pubsub_node{nodeid={H, BN}, parents=BP}), mnesia:delete({pubsub_node, {H, N}}); (_) -> ok end, mnesia:all_keys(pubsub_node)); _ -> ok end end). rename_default_nodeplugin() -> lists:foreach(fun(Node) -> mnesia:dirty_write(Node#pubsub_node{type = "hometree"}) end, mnesia:dirty_match_object(#pubsub_node{type = "default", _ = '_'})). update_state_database(_Host, _ServerHost) -> case catch mnesia:table_info(pubsub_state, attributes) of [stateid, items, affiliation, subscription] -> ?INFO_MSG("upgrade state pubsub tables", []), F = fun ({pubsub_state, {JID, NodeID}, Items, Aff, Sub}, Acc) -> Subs = case Sub of none -> []; _ -> {result, SubID} = pubsub_subscription:subscribe_node(JID, NodeID, []), [{Sub, SubID}] end, NewState = #pubsub_state{stateid = {JID, NodeID}, items = Items, affiliation = Aff, subscriptions = Subs}, [NewState | Acc] end, {atomic, NewRecs} = mnesia:transaction(fun mnesia:foldl/3, [F, [], pubsub_state]), {atomic, ok} = mnesia:delete_table(pubsub_state), {atomic, ok} = mnesia:create_table(pubsub_state, [{disc_copies, [node()]}, {attributes, record_info(fields, pubsub_state)}]), FNew = fun () -> lists:foreach(fun mnesia:write/1, NewRecs) end, case mnesia:transaction(FNew) of {atomic, Result} -> ?INFO_MSG("Pubsub state tables updated correctly: ~p", [Result]); {aborted, Reason} -> ?ERROR_MSG("Problem updating Pubsub state tables:~n~p", [Reason]) end; _ -> ok end. send_loop(State) -> receive {presence, JID, Pid} -> Host = State#state.host, ServerHost = State#state.server_host, LJID = jlib:jid_tolower(JID), BJID = jlib:jid_remove_resource(LJID), %% for each node From is subscribed to %% and if the node is so configured, send the last published item to From lists:foreach(fun(PType) -> {result, Subscriptions} = node_action(Host, PType, get_entity_subscriptions, [Host, JID]), lists:foreach( fun({Node, subscribed, _, SubJID}) -> if (SubJID == LJID) or (SubJID == BJID) -> #pubsub_node{nodeid = {H, N}, type = Type, id = NodeId, options = Options} = Node, case get_option(Options, send_last_published_item) of on_sub_and_presence -> send_items(H, N, NodeId, Type, LJID, last); _ -> ok end; true -> % resource not concerned about that subscription ok end; (_) -> ok end, Subscriptions) end, State#state.plugins), %% and force send the last PEP events published by its offline and local contacts %% only if pubsub is explicitely configured for that. %% this is a hack in a sense that PEP should only be based on presence %% and is not able to "store" events of remote users (via s2s) %% this makes that hack only work for local domain by now if not State#state.ignore_pep_from_offline -> {User, Server, Resource} = jlib:jid_tolower(JID), case catch ejabberd_c2s:get_subscribed(Pid) of Contacts when is_list(Contacts) -> lists:foreach( fun({U, S, R}) -> case S of ServerHost -> %% local contacts case user_resources(U, S) of [] -> %% offline PeerJID = jlib:make_jid(U, S, R), self() ! {presence, User, Server, [Resource], PeerJID}; _ -> %% online % this is already handled by presence probe ok end; _ -> %% remote contacts % we can not do anything in any cases ok end end, Contacts); _ -> ok end; true -> ok end, send_loop(State); {presence, User, Server, Resources, JID} -> %% get resources caps and check if processing is needed spawn(fun() -> Host = State#state.host, Owner = jlib:jid_remove_resource(jlib:jid_tolower(JID)), lists:foreach(fun(#pubsub_node{nodeid = {_, Node}, type = Type, id = NodeId, options = Options}) -> case get_option(Options, send_last_published_item) of on_sub_and_presence -> lists:foreach( fun(Resource) -> LJID = {User, Server, Resource}, Subscribed = case get_option(Options, access_model) of open -> true; presence -> true; whitelist -> false; % subscribers are added manually authorize -> false; % likewise roster -> Grps = get_option(Options, roster_groups_allowed, []), {OU, OS, _} = Owner, element(2, get_roster_info(OU, OS, LJID, Grps)) end, if Subscribed -> send_items(Owner, Node, NodeId, Type, LJID, last); true -> ok end end, Resources); _ -> ok end end, tree_action(Host, get_nodes, [Owner, JID])) end), send_loop(State); stop -> ok end. %% ------- %% disco hooks handling functions %% disco_local_identity(Acc, _From, To, [], _Lang) -> case lists:member(?PEPNODE, plugins(To#jid.lserver)) of true -> [{xmlelement, "identity", [{"category", "pubsub"}, {"type", "pep"}], []} | Acc]; false -> Acc end; disco_local_identity(Acc, _From, _To, _Node, _Lang) -> Acc. disco_local_features(Acc, _From, To, [], _Lang) -> Host = To#jid.lserver, Feats = case Acc of {result, I} -> I; _ -> [] end, {result, Feats ++ lists:map(fun(Feature) -> ?NS_PUBSUB++"#"++Feature end, 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. disco_sm_identity(Acc, From, To, Node, Lang) when is_list(Node) -> disco_sm_identity(Acc, From, To, list_to_binary(Node), Lang); 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(jlib:jid_tolower(jlib:jid_remove_resource(To)), Node, From) ++ Acc. disco_identity(_Host, <<>>, _From) -> [{xmlelement, "identity", [{"category", "pubsub"}, {"type", "pep"}], []}]; disco_identity(Host, Node, From) -> Action = fun(#pubsub_node{id = Idx, type = Type, options = Options, owners = Owners}) -> case get_allowed_items_call(Host, Idx, From, Type, Options, Owners) of {result, _} -> {result, [{xmlelement, "identity", [{"category", "pubsub"}, {"type", "pep"}], []}, {xmlelement, "identity", [{"category", "pubsub"}, {"type", "leaf"} | case get_option(Options, title) of false -> []; [Title] -> [{"name", Title}] end], []}]}; _ -> {result, []} end end, case transaction(Host, Node, Action, sync_dirty) of {result, {_, Result}} -> Result; _ -> [] end. disco_sm_features(Acc, From, To, Node, Lang) when is_list(Node) -> disco_sm_features(Acc, From, To, list_to_binary(Node), Lang); 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(jlib:jid_tolower(jlib:jid_remove_resource(To)), Node, From)}; disco_sm_features(Acc, _From, _To, _Node, _Lang) -> Acc. disco_features(_Host, <<>>, _From) -> [?NS_PUBSUB | [?NS_PUBSUB++"#"++Feature || Feature <- features("pep")]]; disco_features(Host, Node, From) -> Action = fun(#pubsub_node{id = Idx, type = Type, options = Options, owners = Owners}) -> case get_allowed_items_call(Host, Idx, From, Type, Options, Owners) of {result, _} -> {result, [?NS_PUBSUB | [?NS_PUBSUB ++ "#" ++ Feature || Feature <- features("pep")]]}; _ -> {result, []} end end, case transaction(Host, Node, Action, sync_dirty) of {result, {_, Result}} -> Result; _ -> [] end. disco_sm_items(Acc, From, To, Node, Lang) when is_list(Node) -> disco_sm_items(Acc, From, To, list_to_binary(Node), Lang); 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(jlib:jid_tolower(jlib:jid_remove_resource(To)), Node, From))}; disco_sm_items(Acc, _From, _To, _Node, _Lang) -> Acc. disco_items(Host, <<>>, From) -> Action = fun(#pubsub_node{nodeid ={_, NodeID}, options = Options, type = Type, id = Idx, owners = Owners}, Acc) -> case get_allowed_items_call(Host, Idx, From, Type, Options, Owners) of {result, _} -> [{xmlelement, "item", [{"node", binary_to_list(NodeID)}, {"jid", case Host of {_,_,_} -> jlib:jid_to_string(Host); _Host -> Host end} | case get_option(Options, title) of false -> []; [Title] -> [{"name", Title}] end], []} | Acc]; _ -> Acc end end, case transaction(Host, Action, sync_dirty) of {result, Items} -> Items; _ -> [] end; disco_items(Host, Node, From) -> Action = fun(#pubsub_node{id = Idx, type = Type, options = Options, owners = Owners}) -> case get_allowed_items_call(Host, Idx, From, Type, Options, Owners) of {result, Items} -> {result, [{xmlelement, "item", [{"jid", case Host of {_,_,_} -> jlib:jid_to_string(Host); _Host -> Host end}, {"name", ItemID}], []} || #pubsub_item{itemid = {ItemID,_}} <- Items]}; _ -> {result, []} end end, case transaction(Host, Node, Action, sync_dirty) of {result, {_, Result}} -> Result; _ -> [] end. %% ------- %% presence hooks handling functions %% caps_update(#jid{luser = U, lserver = S, lresource = R} = From, To, _Features) -> Pid = ejabberd_sm:get_session_pid(U, S, R), presence_probe(From, To, Pid). presence_probe(#jid{luser = User, lserver = Server, lresource = Resource} = JID, JID, Pid) -> %%?DEBUG("presence probe self ~s@~s/~s ~s@~s/~s",[User,Server,Resource,element(2,JID),element(3,JID),element(4,JID)]), presence(Server, {presence, JID, Pid}), presence(Server, {presence, User, Server, [Resource], JID}); presence_probe(#jid{luser = User, lserver = Server}, #jid{luser = User, lserver = Server}, _Pid) -> %% ignore presence_probe from other ressources for the current user %% this way, we do not send duplicated last items if user already connected with other clients ok; presence_probe(#jid{luser = User, lserver = Server, lresource = Resource}, #jid{lserver = Host} = JID, _Pid) -> %%?DEBUG("presence probe peer ~s@~s/~s ~s@~s/~s",[User,Server,Resource,element(2,JID),element(3,JID),element(4,JID)]), presence(Host, {presence, User, Server, [Resource], JID}). presence(ServerHost, Presence) -> SendLoop = case whereis(gen_mod:get_module_proc(ServerHost, ?LOOPNAME)) of undefined -> % in case send_loop process died, we rebuild a minimal State record and respawn it Host = host(ServerHost), Plugins = plugins(Host), PepOffline = case catch ets:lookup(gen_mod:get_module_proc(ServerHost, config), ignore_pep_from_offline) of [{ignore_pep_from_offline, PO}] -> PO; _ -> true end, State = #state{host = Host, server_host = ServerHost, ignore_pep_from_offline = PepOffline, plugins = Plugins}, init_send_loop(ServerHost, State); Pid -> Pid end, SendLoop ! Presence. %% ------- %% subscription hooks handling functions %% out_subscription(User, Server, JID, subscribed) -> Owner = jlib:make_jid(User, Server, ""), {PUser, PServer, PResource} = jlib:jid_tolower(JID), PResources = case PResource of [] -> user_resources(PUser, PServer); _ -> [PResource] end, presence(Server, {presence, PUser, PServer, PResources, Owner}), true; out_subscription(_,_,_,_) -> true. in_subscription(_, User, Server, Owner, unsubscribed, _) -> unsubscribe_user(jlib:make_jid(User, Server, ""), Owner), true; in_subscription(_, _, _, _, _, _) -> true. unsubscribe_user(Entity, Owner) -> BJID = jlib:jid_tolower(jlib:jid_remove_resource(Owner)), Host = host(element(2, BJID)), spawn(fun() -> lists:foreach(fun(PType) -> {result, Subscriptions} = node_action(Host, PType, get_entity_subscriptions, [Host, Entity]), lists:foreach(fun ({#pubsub_node{options = Options, owners = Owners, id = NodeId}, subscribed, _, JID}) -> case get_option(Options, access_model) of presence -> case lists:member(BJID, Owners) of true -> node_action(Host, PType, unsubscribe_node, [NodeId, Entity, JID, all]); false -> {result, ok} end; _ -> {result, ok} end; (_) -> ok end, Subscriptions) end, plugins(Host)) end). %% ------- %% user remove hook handling function %% remove_user(User, Server) -> LUser = jlib:nodeprep(User), LServer = jlib:nameprep(Server), Entity = jlib:make_jid(LUser, LServer, ""), Host = host(LServer), HomeTreeBase = string_to_node("/home/"++LServer++"/"++LUser), spawn(fun() -> lists:foreach(fun(PType) -> {result, Subscriptions} = node_action(Host, PType, get_entity_subscriptions, [Host, Entity]), lists:foreach(fun ({#pubsub_node{id = NodeId}, _, _, JID}) -> node_action(Host, PType, unsubscribe_node, [NodeId, Entity, JID, all]) end, Subscriptions), {result, Affiliations} = 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 = "hometree"}, owner}) when N == HomeTreeBase -> delete_node(H, N, Entity); ({#pubsub_node{id = NodeId}, publisher}) -> node_action(Host, PType, set_affiliation, [NodeId, Entity, none]); (_) -> ok end, Affiliations) end, plugins(Host)) end). %%-------------------------------------------------------------------- %% Function: %% handle_call(Request, From, State) -> {reply, Reply, State} | %% {reply, Reply, State, Timeout} | %% {noreply, State} | %% {noreply, State, Timeout} | %% {stop, Reason, Reply, State} | %% {stop, Reason, State} %% Description: Handling call messages %%-------------------------------------------------------------------- %% @private 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({route, From, To, Packet}, #state{server_host = ServerHost, access = Access, plugins = Plugins} = State) -> case catch do_route(ServerHost, Access, Plugins, To#jid.lserver, From, To, Packet) of {'EXIT', Reason} -> ?ERROR_MSG("~p", [Reason]); _ -> ok end, {noreply, State}; 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 -> ejabberd_hooks:delete(caps_update, ServerHost, ?MODULE, caps_update, 80), ejabberd_hooks:delete(disco_sm_identity, ServerHost, ?MODULE, disco_sm_identity, 75), ejabberd_hooks:delete(disco_sm_features, ServerHost, ?MODULE, disco_sm_features, 75), ejabberd_hooks:delete(disco_sm_items, ServerHost, ?MODULE, disco_sm_items, 75), gen_iq_handler:remove_iq_handler(ejabberd_sm, ServerHost, ?NS_PUBSUB), gen_iq_handler:remove_iq_handler(ejabberd_sm, ServerHost, ?NS_PUBSUB_OWNER); false -> ok end, ejabberd_hooks:delete(sm_remove_connection_hook, ServerHost, ?MODULE, on_user_offline, 75), ejabberd_hooks:delete(disco_local_identity, ServerHost, ?MODULE, disco_local_identity, 75), ejabberd_hooks:delete(disco_local_features, ServerHost, ?MODULE, disco_local_features, 75), ejabberd_hooks:delete(disco_local_items, ServerHost, ?MODULE, disco_local_items, 75), ejabberd_hooks:delete(presence_probe_hook, ServerHost, ?MODULE, presence_probe, 80), ejabberd_hooks:delete(roster_in_subscription, ServerHost, ?MODULE, in_subscription, 50), ejabberd_hooks:delete(roster_out_subscription, ServerHost, ?MODULE, out_subscription, 50), ejabberd_hooks:delete(remove_user, ServerHost, ?MODULE, remove_user, 50), ejabberd_hooks:delete(anonymous_purge_hook, ServerHost, ?MODULE, remove_user, 50), mod_disco:unregister_feature(ServerHost, ?NS_PUBSUB), gen_mod:get_module_proc(ServerHost, ?LOOPNAME) ! stop, terminate_plugins(Host, ServerHost, Plugins, TreePlugin). %%-------------------------------------------------------------------- %% Func: code_change(OldVsn, State, Extra) -> {ok, NewState} %% Description: Convert process state when code is changed %%-------------------------------------------------------------------- %% @private code_change(_OldVsn, State, _Extra) -> {ok, State}. %%-------------------------------------------------------------------- %%% Internal functions %%-------------------------------------------------------------------- do_route(ServerHost, Access, Plugins, Host, From, To, Packet) -> {xmlelement, Name, Attrs, _Els} = Packet, case To of #jid{luser = "", lresource = ""} -> case Name of "iq" -> case jlib:iq_query_info(Packet) of #iq{type = get, xmlns = ?NS_DISCO_INFO, sub_el = SubEl, lang = Lang} = IQ -> {xmlelement, _, 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} -> jlib:iq_to_xml( IQ#iq{type = result, sub_el = [{xmlelement, "query", QAttrs, IQRes++Info}]}); {error, Error} -> jlib:make_error_reply(Packet, Error) end, ejabberd_router:route(To, From, Res); #iq{type = get, xmlns = ?NS_DISCO_ITEMS, sub_el = SubEl} = IQ -> {xmlelement, _, QAttrs, _} = SubEl, Node = xml:get_attr_s("node", QAttrs), Res = case iq_disco_items(Host, Node, From) of {result, IQRes} -> jlib:iq_to_xml( IQ#iq{type = result, sub_el = [{xmlelement, "query", QAttrs, IQRes}]}); {error, Error} -> jlib:make_error_reply(Packet, Error) end, ejabberd_router:route(To, From, Res); #iq{type = IQType, xmlns = ?NS_PUBSUB, lang = Lang, sub_el = SubEl} = IQ -> Res = case iq_pubsub(Host, ServerHost, From, IQType, SubEl, Lang, Access, Plugins) of {result, IQRes} -> jlib:iq_to_xml( IQ#iq{type = result, sub_el = IQRes}); {error, Error} -> jlib:make_error_reply(Packet, Error) end, ejabberd_router:route(To, From, Res); #iq{type = IQType, xmlns = ?NS_PUBSUB_OWNER, lang = Lang, sub_el = SubEl} = IQ -> Res = case iq_pubsub_owner(Host, ServerHost, From, IQType, SubEl, Lang) of {result, IQRes} -> jlib:iq_to_xml( IQ#iq{type = result, sub_el = IQRes}); {error, Error} -> jlib:make_error_reply(Packet, Error) end, ejabberd_router:route(To, From, Res); #iq{type = get, xmlns = ?NS_VCARD = XMLNS, lang = Lang, sub_el = _SubEl} = IQ -> Res = IQ#iq{type = result, sub_el = [{xmlelement, "vCard", [{"xmlns", XMLNS}], iq_get_vcard(Lang)}]}, ejabberd_router:route(To, From, jlib:iq_to_xml(Res)); #iq{type = set, xmlns = ?NS_COMMANDS} = IQ -> Res = case iq_command(Host, ServerHost, From, IQ, Access, Plugins) of {error, Error} -> jlib:make_error_reply(Packet, Error); {result, IQRes} -> jlib:iq_to_xml(IQ#iq{type = result, sub_el = IQRes}) end, ejabberd_router:route(To, From, Res); #iq{} -> Err = jlib:make_error_reply( Packet, ?ERR_FEATURE_NOT_IMPLEMENTED), ejabberd_router:route(To, From, Err); _ -> ok end; "message" -> case xml:get_attr_s("type", Attrs) of "error" -> ok; _ -> case find_authorization_response(Packet) of none -> ok; invalid -> ejabberd_router:route(To, From, jlib:make_error_reply(Packet, ?ERR_BAD_REQUEST)); XFields -> handle_authorization_response(Host, From, To, Packet, XFields) end end; _ -> ok end; _ -> case xml:get_attr_s("type", Attrs) of "error" -> ok; "result" -> ok; _ -> Err = jlib:make_error_reply(Packet, ?ERR_ITEM_NOT_FOUND), ejabberd_router:route(To, From, Err) end end. command_disco_info(_Host, <>, _From) -> IdentityEl = {xmlelement, "identity", [{"category", "automation"}, {"type", "command-list"}], []}, {result, [IdentityEl]}; command_disco_info(_Host, <>, _From) -> IdentityEl = {xmlelement, "identity", [{"category", "automation"}, {"type", "command-node"}], []}, FeaturesEl = {xmlelement, "feature", [{"var", ?NS_COMMANDS}], []}, {result, [IdentityEl, FeaturesEl]}. node_disco_info(Host, Node, From) -> node_disco_info(Host, Node, From, true, true). %node_disco_identity(Host, Node, From) -> % node_disco_info(Host, Node, From, true, false). %node_disco_features(Host, Node, From) -> % node_disco_info(Host, Node, From, false, true). node_disco_info(Host, Node, From, Identity, Features) -> Action = fun(#pubsub_node{type = Type, id = NodeId}) -> I = case Identity of false -> []; true -> Types = case tree_call(Host, get_subnodes, [Host, Node, From]) of [] -> ["leaf"]; %% No sub-nodes: it's a leaf node _ -> case node_call(Type, get_items, [NodeId, From]) of {result, []} -> ["collection"]; {result, _} -> ["leaf", "collection"]; _ -> [] end end, lists:map(fun(T) -> {xmlelement, "identity", [{"category", "pubsub"}, {"type", T}], []} end, Types) end, F = case Features of false -> []; true -> [{xmlelement, "feature", [{"var", ?NS_PUBSUB}], []} | lists:map(fun(T) -> {xmlelement, "feature", [{"var", ?NS_PUBSUB++"#"++T}], []} end, features(Type))] end, %% TODO: add meta-data info (spec section 5.4) {result, I ++ F} end, case transaction(Host, Node, Action, sync_dirty) of {result, {_, Result}} -> {result, Result}; Other -> Other end. iq_disco_info(Host, SNode, From, Lang) -> [RealSNode|_] = case SNode of [] -> [[]]; _ -> string:tokens(SNode, "!") end, Node = string_to_node(RealSNode), case Node of <<>> -> {result, [{xmlelement, "identity", [{"category", "pubsub"}, {"type", "service"}, {"name", translate:translate(Lang, "Publish-Subscribe")}], []}, {xmlelement, "feature", [{"var", ?NS_DISCO_INFO}], []}, {xmlelement, "feature", [{"var", ?NS_DISCO_ITEMS}], []}, {xmlelement, "feature", [{"var", ?NS_PUBSUB}], []}, {xmlelement, "feature", [{"var", ?NS_COMMANDS}], []}, {xmlelement, "feature", [{"var", ?NS_VCARD}], []}] ++ lists:map(fun(Feature) -> {xmlelement, "feature", [{"var", ?NS_PUBSUB++"#"++Feature}], []} end, features(Host, Node))}; <> -> command_disco_info(Host, Node, From); <> -> command_disco_info(Host, Node, From); _ -> node_disco_info(Host, Node, From) end. iq_disco_items(Host, [], From) -> case tree_action(Host, get_subnodes, [Host, <<>>, From]) of Nodes when is_list(Nodes) -> {result, lists:map( fun(#pubsub_node{nodeid = {_, SubNode}, options = Options}) -> Attrs = case get_option(Options, title) of false -> [{"jid", Host} |nodeAttr(SubNode)]; Title -> [{"jid", Host}, {"name", Title}|nodeAttr(SubNode)] end, {xmlelement, "item", Attrs, []} end, Nodes)}; Other -> Other end; iq_disco_items(Host, ?NS_COMMANDS, _From) -> %% TODO: support localization of this string CommandItems = [{xmlelement, "item", [{"jid", Host}, {"node", ?NS_PUBSUB_GET_PENDING}, {"name", "Get Pending"}], []}], {result, CommandItems}; iq_disco_items(_Host, ?NS_PUBSUB_GET_PENDING, _From) -> CommandItems = [], {result, CommandItems}; iq_disco_items(Host, Item, From) -> case string:tokens(Item, "!") of [_SNode, _ItemID] -> {result, []}; [SNode] -> Node = string_to_node(SNode), Action = fun(#pubsub_node{id = Idx, type = Type, options = Options, owners = Owners}) -> NodeItems = case get_allowed_items_call(Host, Idx, From, Type, Options, Owners) of {result, R} -> R; _ -> [] end, Nodes = lists:map( fun(#pubsub_node{nodeid = {_, SubNode}, options = SubOptions}) -> Attrs = case get_option(SubOptions, title) of false -> [{"jid", Host} |nodeAttr(SubNode)]; Title -> [{"jid", Host}, {"name", Title}|nodeAttr(SubNode)] end, {xmlelement, "item", Attrs, []} end, tree_call(Host, get_subnodes, [Host, Node, From])), Items = lists:map( fun(#pubsub_item{itemid = {RN, _}}) -> {result, Name} = node_call(Type, get_item_name, [Host, Node, RN]), {xmlelement, "item", [{"jid", Host}, {"name", Name}], []} end, NodeItems), {result, Nodes ++ Items} end, case transaction(Host, Node, Action, sync_dirty) of {result, {_, Result}} -> {result, Result}; Other -> Other end end. iq_sm(From, To, #iq{type = Type, sub_el = SubEl, xmlns = XMLNS, lang = Lang} = IQ) -> ServerHost = To#jid.lserver, LOwner = jlib:jid_tolower(jlib:jid_remove_resource(To)), Res = case XMLNS of ?NS_PUBSUB -> iq_pubsub(LOwner, ServerHost, From, Type, SubEl, Lang); ?NS_PUBSUB_OWNER -> iq_pubsub_owner(LOwner, ServerHost, From, Type, SubEl, Lang) end, case Res of {result, IQRes} -> IQ#iq{type = result, sub_el = IQRes}; {error, Error} -> IQ#iq{type = error, sub_el = [Error, SubEl]} end. iq_get_vcard(Lang) -> [{xmlelement, "FN", [], [{xmlcdata, "ejabberd/mod_pubsub"}]}, {xmlelement, "URL", [], [{xmlcdata, ?EJABBERD_URI}]}, {xmlelement, "DESC", [], [{xmlcdata, translate:translate(Lang, "ejabberd Publish-Subscribe module") ++ "\nCopyright (c) 2004-2011 ProcessOne"}]}]. iq_pubsub(Host, ServerHost, From, IQType, SubEl, Lang) -> iq_pubsub(Host, ServerHost, From, IQType, SubEl, Lang, all, plugins(ServerHost)). iq_pubsub(Host, ServerHost, From, IQType, SubEl, Lang, Access, Plugins) -> {xmlelement, _, _, SubEls} = SubEl, case xml:remove_cdata(SubEls) of [{xmlelement, Name, Attrs, Els} | Rest] -> Node = string_to_node(xml:get_attr_s("node", Attrs)), case {IQType, Name} of {set, "create"} -> Config = case Rest of [{xmlelement, "configure", _, C}] -> C; _ -> [] end, %% Get the type of the node Type = case xml:get_attr_s("type", Attrs) of [] -> hd(Plugins); T -> T end, %% we use Plugins list matching because we do not want to allocate %% atoms for non existing type, this prevent atom allocation overflow case lists:member(Type, Plugins) of false -> {error, extended_error( ?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "create-nodes")}; true -> create_node(Host, ServerHost, Node, From, Type, Access, Config) end; {set, "publish"} -> case xml:remove_cdata(Els) of [{xmlelement, "item", ItemAttrs, Payload}] -> ItemId = xml:get_attr_s("id", ItemAttrs), publish_item(Host, ServerHost, Node, From, ItemId, Payload); [] -> %% Publisher attempts to publish to persistent node with no item {error, extended_error(?ERR_BAD_REQUEST, "item-required")}; _ -> %% Entity attempts to publish item with multiple payload elements or namespace does not match {error, extended_error(?ERR_BAD_REQUEST, "invalid-payload")} end; {set, "retract"} -> ForceNotify = case xml:get_attr_s("notify", Attrs) of "1" -> true; "true" -> true; _ -> false end, case xml:remove_cdata(Els) of [{xmlelement, "item", ItemAttrs, _}] -> ItemId = xml:get_attr_s("id", ItemAttrs), delete_item(Host, Node, From, ItemId, ForceNotify); _ -> %% Request does not specify an item {error, extended_error(?ERR_BAD_REQUEST, "item-required")} end; {set, "subscribe"} -> Config = case Rest of [{xmlelement, "options", _, C}] -> C; _ -> [] end, JID = xml:get_attr_s("jid", Attrs), subscribe_node(Host, Node, From, JID, Config); {set, "unsubscribe"} -> JID = xml:get_attr_s("jid", Attrs), SubId = xml:get_attr_s("subid", Attrs), unsubscribe_node(Host, Node, From, JID, SubId); {get, "items"} -> MaxItems = xml:get_attr_s("max_items", Attrs), SubId = xml:get_attr_s("subid", Attrs), ItemIDs = lists:foldl(fun ({xmlelement, "item", ItemAttrs, _}, Acc) -> case xml:get_attr_s("id", ItemAttrs) of "" -> Acc; ItemID -> [ItemID|Acc] end; (_, Acc) -> Acc end, [], xml:remove_cdata(Els)), get_items(Host, Node, From, SubId, MaxItems, ItemIDs); {get, "subscriptions"} -> get_subscriptions(Host, Node, From, Plugins); {get, "affiliations"} -> get_affiliations(Host, From, Plugins); {get, "options"} -> SubID = xml:get_attr_s("subid", Attrs), JID = xml:get_attr_s("jid", Attrs), get_options(Host, Node, JID, SubID, Lang); {set, "options"} -> SubID = xml:get_attr_s("subid", Attrs), JID = xml:get_attr_s("jid", Attrs), set_options(Host, Node, JID, SubID, Els); _ -> {error, ?ERR_FEATURE_NOT_IMPLEMENTED} end; Other -> ?INFO_MSG("Too many actions: ~p", [Other]), {error, ?ERR_BAD_REQUEST} end. iq_pubsub_owner(Host, ServerHost, From, IQType, SubEl, Lang) -> {xmlelement, _, _, SubEls} = SubEl, Action = xml:remove_cdata(SubEls), case Action of [{xmlelement, Name, Attrs, Els}] -> Node = string_to_node(xml:get_attr_s("node", Attrs)), case {IQType, Name} of {get, "configure"} -> get_configure(Host, ServerHost, Node, From, Lang); {set, "configure"} -> set_configure(Host, Node, From, Els, Lang); {get, "default"} -> get_default(Host, Node, From, Lang); {set, "delete"} -> delete_node(Host, Node, From); {set, "purge"} -> purge_node(Host, Node, From); {get, "subscriptions"} -> get_subscriptions(Host, Node, From); {set, "subscriptions"} -> set_subscriptions(Host, Node, From, xml:remove_cdata(Els)); {get, "affiliations"} -> get_affiliations(Host, Node, From); {set, "affiliations"} -> set_affiliations(Host, Node, From, xml:remove_cdata(Els)); _ -> {error, ?ERR_FEATURE_NOT_IMPLEMENTED} end; _ -> ?INFO_MSG("Too many actions: ~p", [Action]), {error, ?ERR_BAD_REQUEST} end. iq_command(Host, ServerHost, From, IQ, Access, Plugins) -> case adhoc:parse_request(IQ) of Req when is_record(Req, adhoc_request) -> case adhoc_request(Host, ServerHost, From, Req, Access, Plugins) of Resp when is_record(Resp, adhoc_response) -> {result, [adhoc:produce_response(Req, Resp)]}; Error -> Error end; Err -> Err end. %% @doc

Processes an Ad Hoc Command.

adhoc_request(Host, _ServerHost, Owner, #adhoc_request{node = ?NS_PUBSUB_GET_PENDING, lang = Lang, action = "execute", xdata = false}, _Access, Plugins) -> send_pending_node_form(Host, Owner, Lang, Plugins); adhoc_request(Host, _ServerHost, Owner, #adhoc_request{node = ?NS_PUBSUB_GET_PENDING, action = "execute", xdata = XData}, _Access, _Plugins) -> ParseOptions = case XData of {xmlelement, "x", _Attrs, _SubEls} = XEl -> case jlib:parse_xdata_submit(XEl) of invalid -> {error, ?ERR_BAD_REQUEST}; XData2 -> case set_xoption(Host, XData2, []) of NewOpts when is_list(NewOpts) -> {result, NewOpts}; Err -> Err end end; _ -> ?INFO_MSG("Bad XForm: ~p", [XData]), {error, ?ERR_BAD_REQUEST} end, case ParseOptions of {result, XForm} -> case lists:keysearch(node, 1, XForm) of {value, {_, Node}} -> send_pending_auth_events(Host, Node, Owner); false -> {error, extended_error(?ERR_BAD_REQUEST, "bad-payload")} end; Error -> Error end; adhoc_request(_Host, _ServerHost, _Owner, #adhoc_request{action = "cancel"}, _Access, _Plugins) -> #adhoc_response{status = canceled}; adhoc_request(Host, ServerHost, Owner, #adhoc_request{action = []} = R, Access, Plugins) -> adhoc_request(Host, ServerHost, Owner, R#adhoc_request{action = "execute"}, Access, Plugins); adhoc_request(_Host, _ServerHost, _Owner, Other, _Access, _Plugins) -> ?DEBUG("Couldn't process ad hoc command:~n~p", [Other]), {error, ?ERR_ITEM_NOT_FOUND}. %% @spec (Host, Owner, Lang, Plugins) -> iqRes() %% @doc

Sends the process pending subscriptions XForm for Host to %% Owner.

send_pending_node_form(Host, Owner, _Lang, Plugins) -> Filter = fun (Plugin) -> lists:member("get-pending", features(Plugin)) end, case lists:filter(Filter, Plugins) of [] -> {error, ?ERR_FEATURE_NOT_IMPLEMENTED}; Ps -> XOpts = lists:map(fun (Node) -> {xmlelement, "option", [], [{xmlelement, "value", [], [{xmlcdata, node_to_string(Node)}]}]} end, get_pending_nodes(Host, Owner, Ps)), XForm = {xmlelement, "x", [{"xmlns", ?NS_XDATA}, {"type", "form"}], [{xmlelement, "field", [{"type", "list-single"}, {"var", "pubsub#node"}], lists:usort(XOpts)}]}, #adhoc_response{status = executing, defaultaction = "execute", elements = [XForm]} end. get_pending_nodes(Host, Owner, Plugins) -> Tr = fun (Type) -> case node_call(Type, get_pending_nodes, [Host, Owner]) of {result, Nodes} -> Nodes; _ -> [] end end, case transaction(fun () -> {result, lists:flatmap(Tr, Plugins)} end, sync_dirty) of {result, Res} -> Res; Err -> Err end. %% @spec (Host, Node, Owner) -> iqRes() %% @doc

Send a subscription approval form to Owner for all pending %% subscriptions on Host and Node.

send_pending_auth_events(Host, Node, Owner) -> ?DEBUG("Sending pending auth events for ~s on ~s:~s", [jlib:jid_to_string(Owner), Host, node_to_string(Node)]), Action = fun (#pubsub_node{id = NodeID, type = Type}) -> case lists:member("get-pending", features(Type)) of true -> case node_call(Type, get_affiliation, [NodeID, Owner]) of {result, owner} -> node_call(Type, get_node_subscriptions, [NodeID]); _ -> {error, ?ERR_FORBIDDEN} end; false -> {error, ?ERR_FEATURE_NOT_IMPLEMENTED} end end, case transaction(Host, Node, Action, sync_dirty) of {result, {N, Subscriptions}} -> lists:foreach(fun({J, pending, _SubID}) -> send_authorization_request(N, jlib:make_jid(J)); ({J, pending}) -> send_authorization_request(N, jlib:make_jid(J)); (_) -> ok end, Subscriptions), #adhoc_response{}; Err -> Err end. %%% authorization handling send_authorization_request(#pubsub_node{owners = Owners, nodeid = {Host, Node}}, Subscriber) -> Lang = "en", %% TODO fix Stanza = {xmlelement, "message", [], [{xmlelement, "x", [{"xmlns", ?NS_XDATA}, {"type", "form"}], [{xmlelement, "title", [], [{xmlcdata, translate:translate(Lang, "PubSub subscriber request")}]}, {xmlelement, "instructions", [], [{xmlcdata, translate:translate(Lang, "Choose whether to approve this entity's subscription.")}]}, {xmlelement, "field", [{"var", "FORM_TYPE"}, {"type", "hidden"}], [{xmlelement, "value", [], [{xmlcdata, ?NS_PUBSUB_SUB_AUTH}]}]}, {xmlelement, "field", [{"var", "pubsub#node"}, {"type", "text-single"}, {"label", translate:translate(Lang, "Node ID")}], [{xmlelement, "value", [], [{xmlcdata, node_to_string(Node)}]}]}, {xmlelement, "field", [{"var", "pubsub#subscriber_jid"}, {"type", "jid-single"}, {"label", translate:translate(Lang, "Subscriber Address")}], [{xmlelement, "value", [], [{xmlcdata, jlib:jid_to_string(Subscriber)}]}]}, {xmlelement, "field", [{"var", "pubsub#allow"}, {"type", "boolean"}, {"label", translate:translate(Lang, "Allow this Jabber ID to subscribe to this pubsub node?")}], [{xmlelement, "value", [], [{xmlcdata, "false"}]}]}]}]}, lists:foreach(fun(Owner) -> ejabberd_router:route(service_jid(Host), jlib:make_jid(Owner), Stanza) end, Owners). find_authorization_response(Packet) -> {xmlelement, _Name, _Attrs, Els} = Packet, XData1 = lists:map(fun({xmlelement, "x", XAttrs, _} = XEl) -> case xml:get_attr_s("xmlns", XAttrs) of ?NS_XDATA -> case xml:get_attr_s("type", XAttrs) of "cancel" -> none; _ -> jlib:parse_xdata_submit(XEl) end; _ -> none end; (_) -> none end, xml:remove_cdata(Els)), XData = lists:filter(fun(E) -> E /= none end, XData1), case XData of [invalid] -> invalid; [] -> none; [XFields] when is_list(XFields) -> ?DEBUG("XFields: ~p", [XFields]), case lists:keysearch("FORM_TYPE", 1, XFields) of {value, {_, [?NS_PUBSUB_SUB_AUTH]}} -> XFields; _ -> invalid end end. %% @spec (Host, JID, Node, Subscription) -> void %% Host = mod_pubsub:host() %% JID = jlib:jid() %% SNode = string() %% Subscription = atom() | {atom(), mod_pubsub:subid()} %% @doc Send a message to JID with the supplied Subscription send_authorization_approval(Host, JID, SNode, Subscription) -> SubAttrs = case Subscription of {S, SID} -> [{"subscription", subscription_to_string(S)}, {"subid", SID}]; S -> [{"subscription", subscription_to_string(S)}] end, Stanza = event_stanza( [{xmlelement, "subscription", [{"jid", jlib:jid_to_string(JID)}|nodeAttr(SNode)] ++ SubAttrs, []}]), ejabberd_router:route(service_jid(Host), JID, Stanza). handle_authorization_response(Host, From, To, Packet, XFields) -> case {lists:keysearch("pubsub#node", 1, XFields), lists:keysearch("pubsub#subscriber_jid", 1, XFields), lists:keysearch("pubsub#allow", 1, XFields)} of {{value, {_, [SNode]}}, {value, {_, [SSubscriber]}}, {value, {_, [SAllow]}}} -> Node = string_to_node(SNode), Subscriber = jlib:string_to_jid(SSubscriber), Allow = case SAllow of "1" -> true; "true" -> true; _ -> false end, Action = fun(#pubsub_node{type = Type, owners = Owners, id = NodeId}) -> IsApprover = lists:member(jlib:jid_tolower(jlib:jid_remove_resource(From)), Owners), {result, Subscriptions} = node_call(Type, get_subscriptions, [NodeId, Subscriber]), if not IsApprover -> {error, ?ERR_FORBIDDEN}; true -> update_auth(Host, SNode, Type, NodeId, Subscriber, Allow, Subscriptions) end end, case transaction(Host, Node, Action, sync_dirty) of {error, Error} -> ejabberd_router:route( To, From, jlib:make_error_reply(Packet, Error)); {result, {_, _NewSubscription}} -> %% XXX: notify about subscription state change, section 12.11 ok; _ -> ejabberd_router:route( To, From, jlib:make_error_reply(Packet, ?ERR_INTERNAL_SERVER_ERROR)) end; _ -> ejabberd_router:route( To, From, jlib:make_error_reply(Packet, ?ERR_NOT_ACCEPTABLE)) end. update_auth(Host, Node, Type, NodeId, Subscriber, Allow, Subscriptions) -> Subscription = lists:filter(fun({pending, _}) -> true; (_) -> false end, Subscriptions), case Subscription of [{pending, SubID}] -> %% TODO does not work if several pending NewSubscription = case Allow of true -> subscribed; false -> none end, node_call(Type, set_subscriptions, [NodeId, Subscriber, NewSubscription, SubID]), send_authorization_approval(Host, Subscriber, Node, NewSubscription), {result, ok}; _ -> {error, ?ERR_UNEXPECTED_REQUEST} end. -define(XFIELD(Type, Label, Var, Val), {xmlelement, "field", [{"type", Type}, {"label", translate:translate(Lang, Label)}, {"var", Var}], [{xmlelement, "value", [], [{xmlcdata, Val}]}]}). -define(BOOLXFIELD(Label, Var, Val), ?XFIELD("boolean", Label, Var, case Val of true -> "1"; _ -> "0" end)). -define(STRINGXFIELD(Label, Var, Val), ?XFIELD("text-single", Label, Var, Val)). -define(STRINGMXFIELD(Label, Var, Vals), {xmlelement, "field", [{"type", "text-multi"}, {"label", translate:translate(Lang, Label)}, {"var", Var}], [{xmlelement, "value", [], [{xmlcdata, V}]} || V <- Vals]}). -define(XFIELDOPT(Type, Label, Var, Val, Opts), {xmlelement, "field", [{"type", Type}, {"label", translate:translate(Lang, Label)}, {"var", Var}], lists:map(fun(Opt) -> {xmlelement, "option", [], [{xmlelement, "value", [], [{xmlcdata, Opt}]}]} end, Opts) ++ [{xmlelement, "value", [], [{xmlcdata, Val}]}]}). -define(LISTXFIELD(Label, Var, Val, Opts), ?XFIELDOPT("list-single", Label, Var, Val, Opts)). -define(LISTMXFIELD(Label, Var, Vals, Opts), {xmlelement, "field", [{"type", "list-multi"}, {"label", translate:translate(Lang, Label)}, {"var", Var}], lists:map(fun(Opt) -> {xmlelement, "option", [], [{xmlelement, "value", [], [{xmlcdata, Opt}]}]} end, Opts) ++ lists:map(fun(Val) -> {xmlelement, "value", [], [{xmlcdata, Val}]} end, Vals)}). %% @spec (Host::host(), ServerHost::host(), Node::pubsubNode(), Owner::jid(), NodeType::nodeType()) -> %% {error, Reason::stanzaError()} | %% {result, []} %% @doc

Create new pubsub nodes

%%

In addition to method-specific error conditions, there are several general reasons why the node creation request might fail:

%% %%

ote: node creation is a particular case, error return code is evaluated at many places:

%% create_node(Host, ServerHost, Node, Owner, Type) -> create_node(Host, ServerHost, Node, Owner, Type, all, []). create_node(Host, ServerHost, <<>>, Owner, Type, Access, Configuration) -> case lists:member("instant-nodes", features(Type)) of true -> NewNode = string_to_node(randoms:get_string()), case create_node(Host, ServerHost, NewNode, Owner, Type, Access, Configuration) of {result, []} -> {result, [{xmlelement, "pubsub", [{"xmlns", ?NS_PUBSUB}], [{xmlelement, "create", nodeAttr(NewNode), []}]}]}; Error -> Error end; false -> %% Service does not support instant nodes {error, extended_error(?ERR_NOT_ACCEPTABLE, "nodeid-required")} end; create_node(Host, ServerHost, Node, Owner, GivenType, Access, Configuration) -> Type = select_type(ServerHost, Host, Node, GivenType), %% TODO, check/set node_type = Type ParseOptions = case xml:remove_cdata(Configuration) of [] -> {result, node_options(Type)}; [{xmlelement, "x", _Attrs, _SubEls} = XEl] -> case jlib:parse_xdata_submit(XEl) of invalid -> {error, ?ERR_BAD_REQUEST}; XData -> case set_xoption(Host, XData, node_options(Type)) of NewOpts when is_list(NewOpts) -> {result, NewOpts}; Err -> Err end end; _ -> ?INFO_MSG("Node ~p; bad configuration: ~p", [Node, Configuration]), {error, ?ERR_BAD_REQUEST} end, case ParseOptions of {result, NodeOptions} -> CreateNode = fun() -> SNode = node_to_string(Node), Parent = case node_call(Type, node_to_path, [Node]) of {result, [SNode]} -> <<>>; {result, Path} -> element(2, node_call(Type, path_to_node, [lists:sublist(Path, length(Path)-1)])) end, Parents = case Parent of <<>> -> []; _ -> [Parent] end, case node_call(Type, create_node_permission, [Host, ServerHost, Node, Parent, Owner, Access]) of {result, true} -> case tree_call(Host, create_node, [Host, Node, Type, Owner, NodeOptions, Parents]) of {ok, NodeId} -> case node_call(Type, create_node, [NodeId, Owner]) of {result, Result} -> {result, {NodeId, Result}}; Error -> Error end; {error, {virtual, NodeId}} -> case node_call(Type, create_node, [NodeId, Owner]) of {result, Result} -> {result, {NodeId, [], Result}}; Error -> Error end; Error -> Error end; _ -> {error, ?ERR_FORBIDDEN} end end, Reply = [{xmlelement, "pubsub", [{"xmlns", ?NS_PUBSUB}], [{xmlelement, "create", nodeAttr(Node), []}]}], case transaction(CreateNode, transaction) of {result, {NodeId, {Result, broadcast}}} -> broadcast_created_node(Host, Node, NodeId, Type, NodeOptions), case Result of default -> {result, Reply}; _ -> {result, Result} end; {result, {_NodeId, default}} -> {result, Reply}; {result, {_NodeId, Result}} -> {result, Result}; Error -> %% in case we change transaction to sync_dirty... %% node_call(Type, delete_node, [Host, Node]), %% tree_call(Host, delete_node, [Host, Node]), Error end; Error -> Error end. %% @spec (Host, Node, Owner) -> %% {error, Reason} | {result, []} %% Host = host() %% Node = pubsubNode() %% Owner = jid() %% Reason = stanzaError() %% @doc

Delete specified node and all childs.

%%

There are several reasons why the node deletion request might fail:

%% delete_node(_Host, <<>>, _Owner) -> %% Node is the root {error, ?ERR_NOT_ALLOWED}; delete_node(Host, Node, Owner) -> Action = fun(#pubsub_node{type = Type, id = NodeId}) -> case node_call(Type, get_affiliation, [NodeId, Owner]) of {result, owner} -> Removed = tree_call(Host, delete_node, [Host, Node]), case node_call(Type, delete_node, [Removed]) of {result, Res} -> {result, Res}; Error -> Error end; _ -> %% Entity is not an owner {error, ?ERR_FORBIDDEN} end end, Reply = [], case transaction(Host, Node, Action, transaction) of {result, {_, {Result, broadcast, Removed}}} -> lists:foreach(fun({RNode, _RSubscriptions}) -> {RH, RN} = RNode#pubsub_node.nodeid, NodeId = RNode#pubsub_node.id, Type = RNode#pubsub_node.type, Options = RNode#pubsub_node.options, broadcast_removed_node(RH, RN, NodeId, Type, Options) end, Removed), case Result of default -> {result, Reply}; _ -> {result, Result} end; {result, {_, {Result, _Removed}}} -> case Result of default -> {result, Reply}; _ -> {result, Result} end; {result, {_, default}} -> {result, Reply}; {result, {_, Result}} -> {result, Result}; Error -> Error end. %% @spec (Host, Node, From, JID, Configuration) -> %% {error, Reason::stanzaError()} | %% {result, []} %% Host = host() %% Node = pubsubNode() %% From = jid() %% JID = jid() %% @see node_hometree:subscribe_node/5 %% @doc

Accepts or rejects subcription requests on a PubSub node.

%%

There are several reasons why the subscription request might fail:

%% subscribe_node(Host, Node, From, JID, Configuration) -> SubOpts = case pubsub_subscription:parse_options_xform(Configuration) of {result, GoodSubOpts} -> GoodSubOpts; _ -> invalid end, Subscriber = case jlib:string_to_jid(JID) of error -> {"", "", ""}; J -> jlib:jid_tolower(J) end, Action = fun(#pubsub_node{options = Options, owners = Owners, type = Type, id = NodeId}) -> Features = features(Type), SubscribeFeature = lists:member("subscribe", Features), OptionsFeature = lists:member("subscription-options", Features), HasOptions = not (SubOpts == []), SubscribeConfig = get_option(Options, subscribe), AccessModel = get_option(Options, access_model), SendLast = get_option(Options, send_last_published_item), AllowedGroups = get_option(Options, roster_groups_allowed, []), {PresenceSubscription, RosterGroup} = get_presence_and_roster_permissions(Host, Subscriber, Owners, AccessModel, AllowedGroups), if not SubscribeFeature -> %% Node does not support subscriptions {error, extended_error(?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "subscribe")}; not SubscribeConfig -> %% Node does not support subscriptions {error, extended_error(?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "subscribe")}; HasOptions andalso not OptionsFeature -> %% Node does not support subscription options {error, extended_error(?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "subscription-options")}; SubOpts == invalid -> %% Passed invalit options submit form {error, extended_error(?ERR_BAD_REQUEST, "invalid-options")}; true -> node_call(Type, subscribe_node, [NodeId, From, Subscriber, AccessModel, SendLast, PresenceSubscription, RosterGroup, SubOpts]) end end, Reply = fun(Subscription) -> %% TODO, this is subscription-notification, should depends on node features SubAttrs = case Subscription of {subscribed, SubId} -> [{"subscription", subscription_to_string(subscribed)}, {"subid", SubId}, {"node",Node}]; Other -> [{"subscription", subscription_to_string(Other)}, {"node", Node}] end, Fields = [{"jid", jlib:jid_to_string(Subscriber)} | SubAttrs], [{xmlelement, "pubsub", [{"xmlns", ?NS_PUBSUB}], [{xmlelement, "subscription", Fields, []}]}] end, case transaction(Host, Node, Action, sync_dirty) of {result, {TNode, {Result, subscribed, SubId, send_last}}} -> NodeId = TNode#pubsub_node.id, Type = TNode#pubsub_node.type, send_items(Host, Node, NodeId, Type, Subscriber, last), case Result of default -> {result, Reply({subscribed, SubId})}; _ -> {result, Result} end; {result, {_TNode, {default, subscribed, SubId}}} -> {result, Reply({subscribed, SubId})}; {result, {_TNode, {Result, subscribed, _SubId}}} -> {result, Result}; {result, {TNode, {default, pending, _SubId}}} -> send_authorization_request(TNode, Subscriber), {result, Reply(pending)}; {result, {TNode, {Result, pending}}} -> send_authorization_request(TNode, Subscriber), {result, Result}; {result, {_, Result}} -> %% this case should never occure anyway {result, Result}; Error -> Error end. %% @spec (Host, Noce, From, JID, SubId) -> {error, Reason} | {result, []} %% Host = host() %% Node = pubsubNode() %% From = jid() %% JID = string() %% SubId = string() %% Reason = stanzaError() %% @doc

Unsubscribe JID from the Node.

%%

There are several reasons why the unsubscribe request might fail:

%% unsubscribe_node(Host, Node, From, JID, SubId) when is_list(JID) -> Subscriber = case jlib:string_to_jid(JID) of error -> {"", "", ""}; J -> jlib:jid_tolower(J) end, unsubscribe_node(Host, Node, From, Subscriber, SubId); unsubscribe_node(Host, Node, From, Subscriber, SubId) -> Action = fun(#pubsub_node{type = Type, id = NodeId}) -> node_call(Type, unsubscribe_node, [NodeId, From, Subscriber, SubId]) end, case transaction(Host, Node, Action, sync_dirty) of {result, {_, default}} -> {result, []}; {result, {_, Result}} -> {result, Result}; Error -> Error end. %% @spec (Host::host(), ServerHost::host(), JID::jid(), Node::pubsubNode(), ItemId::string(), Payload::term()) -> %% {error, Reason::stanzaError()} | %% {result, []} %% @doc

Publish item to a PubSub node.

%%

The permission to publish an item must be verified by the plugin implementation.

%%

There are several reasons why the publish request might fail:

%% publish_item(Host, ServerHost, Node, Publisher, "", Payload) -> %% if publisher does not specify an ItemId, the service MUST generate the ItemId publish_item(Host, ServerHost, Node, Publisher, uniqid(), Payload); publish_item(Host, ServerHost, Node, Publisher, ItemId, Payload) -> Action = fun(#pubsub_node{options = Options, type = Type, id = NodeId}) -> Features = features(Type), PublishFeature = lists:member("publish", Features), PublishModel = get_option(Options, publish_model), MaxItems = max_items(Host, Options), DeliverPayloads = get_option(Options, deliver_payloads), PersistItems = get_option(Options, persist_items), PayloadCount = payload_xmlelements(Payload), PayloadSize = size(term_to_binary(Payload))-2, % size(term_to_binary([])) == 2 PayloadMaxSize = get_option(Options, max_payload_size), % pubsub#deliver_payloads true % pubsub#persist_items true -> 1 item; false -> 0 item if not PublishFeature -> %% Node does not support item publication {error, extended_error(?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "publish")}; PayloadSize > PayloadMaxSize -> %% Entity attempts to publish very large payload {error, extended_error(?ERR_NOT_ACCEPTABLE, "payload-too-big")}; (PayloadCount == 0) and (Payload == []) -> %% Publisher attempts to publish to payload node with no payload {error, extended_error(?ERR_BAD_REQUEST, "payload-required")}; (PayloadCount > 1) or (PayloadCount == 0) -> %% Entity attempts to publish item with multiple payload elements {error, extended_error(?ERR_BAD_REQUEST, "invalid-payload")}; (DeliverPayloads == 0) and (PersistItems == 0) and (PayloadSize > 0) -> %% Publisher attempts to publish to transient notification node with item {error, extended_error(?ERR_BAD_REQUEST, "item-forbidden")}; ((DeliverPayloads == 1) or (PersistItems == 1)) and (PayloadSize == 0) -> %% Publisher attempts to publish to persistent node with no item {error, extended_error(?ERR_BAD_REQUEST, "item-required")}; true -> node_call(Type, publish_item, [NodeId, Publisher, PublishModel, MaxItems, ItemId, Payload]) end end, ejabberd_hooks:run(pubsub_publish_item, ServerHost, [ServerHost, Node, Publisher, service_jid(Host), ItemId, Payload]), Reply = [{xmlelement, "pubsub", [{"xmlns", ?NS_PUBSUB}], [{xmlelement, "publish", nodeAttr(Node), [{xmlelement, "item", itemAttr(ItemId), []}]}]}], case transaction(Host, Node, Action, sync_dirty) of {result, {TNode, {Result, Broadcast, Removed}}} -> NodeId = TNode#pubsub_node.id, Type = TNode#pubsub_node.type, Options = TNode#pubsub_node.options, BrPayload = case Broadcast of broadcast -> Payload; PluginPayload -> PluginPayload end, broadcast_publish_item(Host, Node, NodeId, Type, Options, ItemId, jlib:jid_tolower(Publisher), BrPayload, Removed), set_cached_item(Host, NodeId, ItemId, Publisher, Payload), case Result of default -> {result, Reply}; _ -> {result, Result} end; {result, {TNode, {default, Removed}}} -> NodeId = TNode#pubsub_node.id, Type = TNode#pubsub_node.type, Options = TNode#pubsub_node.options, broadcast_retract_items(Host, Node, NodeId, Type, Options, Removed), set_cached_item(Host, NodeId, ItemId, Publisher, Payload), {result, Reply}; {result, {TNode, {Result, Removed}}} -> NodeId = TNode#pubsub_node.id, Type = TNode#pubsub_node.type, Options = TNode#pubsub_node.options, broadcast_retract_items(Host, Node, NodeId, Type, Options, Removed), set_cached_item(Host, NodeId, ItemId, Publisher, Payload), {result, Result}; {result, {_, default}} -> {result, Reply}; {result, {_, Result}} -> {result, Result}; {error, ?ERR_ITEM_NOT_FOUND} -> %% handles auto-create feature %% for automatic node creation. we'll take the default node type: %% first listed into the plugins configuration option, or pep Type = select_type(ServerHost, Host, Node), case lists:member("auto-create", features(Type)) of true -> case create_node(Host, ServerHost, Node, Publisher, Type) of {result, _} -> publish_item(Host, ServerHost, Node, Publisher, ItemId, Payload); _ -> {error, ?ERR_ITEM_NOT_FOUND} end; false -> {error, ?ERR_ITEM_NOT_FOUND} end; Error -> Error end. %% @spec (Host::host(), JID::jid(), Node::pubsubNode(), ItemId::string()) -> %% {error, Reason::stanzaError()} | %% {result, []} %% @doc

Delete item from a PubSub node.

%%

The permission to delete an item must be verified by the plugin implementation.

%%

There are several reasons why the item retraction request might fail:

%% delete_item(Host, Node, Publisher, ItemId) -> delete_item(Host, Node, Publisher, ItemId, false). delete_item(_, "", _, _, _) -> %% Request does not specify a node {error, extended_error(?ERR_BAD_REQUEST, "node-required")}; delete_item(Host, Node, Publisher, ItemId, ForceNotify) -> Action = fun(#pubsub_node{options = Options, type = Type, id = NodeId}) -> Features = features(Type), PersistentFeature = lists:member("persistent-items", Features), DeleteFeature = lists:member("delete-items", Features), PublishModel = get_option(Options, publish_model), if %%-> iq_pubsub just does that matchs %% %% Request does not specify an item %% {error, extended_error(?ERR_BAD_REQUEST, "item-required")}; not PersistentFeature -> %% Node does not support persistent items {error, extended_error(?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "persistent-items")}; not DeleteFeature -> %% Service does not support item deletion {error, extended_error(?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "delete-items")}; true -> node_call(Type, delete_item, [NodeId, Publisher, PublishModel, ItemId]) end end, Reply = [], case transaction(Host, Node, Action, sync_dirty) of {result, {TNode, {Result, broadcast}}} -> NodeId = TNode#pubsub_node.id, Type = TNode#pubsub_node.type, Options = TNode#pubsub_node.options, broadcast_retract_items(Host, Node, NodeId, Type, Options, [ItemId], ForceNotify), case get_cached_item(Host, NodeId) of #pubsub_item{itemid = {ItemId, NodeId}, _ = '_'} -> unset_cached_item(Host, NodeId); _ -> ok end, case Result of default -> {result, Reply}; _ -> {result, Result} end; {result, {_, default}} -> {result, Reply}; {result, {_, Result}} -> {result, Result}; Error -> Error end. %% @spec (Host, JID, Node) -> %% {error, Reason} | {result, []} %% Host = host() %% Node = pubsubNode() %% JID = jid() %% Reason = stanzaError() %% @doc

Delete all items of specified node owned by JID.

%%

There are several reasons why the node purge request might fail:

%% purge_node(Host, Node, Owner) -> Action = fun(#pubsub_node{options = Options, type = Type, id = NodeId}) -> Features = features(Type), PurgeFeature = lists:member("purge-nodes", Features), PersistentFeature = lists:member("persistent-items", Features), PersistentConfig = get_option(Options, persist_items), if not PurgeFeature -> %% Service does not support node purging {error, extended_error(?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "purge-nodes")}; not PersistentFeature -> %% Node does not support persistent items {error, extended_error(?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "persistent-items")}; not PersistentConfig -> %% Node is not configured for persistent items {error, extended_error(?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "persistent-items")}; true -> node_call(Type, purge_node, [NodeId, Owner]) end end, Reply = [], case transaction(Host, Node, Action, sync_dirty) of {result, {TNode, {Result, broadcast}}} -> NodeId = TNode#pubsub_node.id, Type = TNode#pubsub_node.type, Options = TNode#pubsub_node.options, broadcast_purge_node(Host, Node, NodeId, Type, Options), unset_cached_item(Host, NodeId), case Result of default -> {result, Reply}; _ -> {result, Result} end; {result, {_, default}} -> {result, Reply}; {result, {_, Result}} -> {result, Result}; Error -> Error end. %% @doc

Return the items of a given node.

%%

The number of items to return is limited by MaxItems.

%%

The permission are not checked in this function.

%% @todo We probably need to check that the user doing the query has the right %% to read the items. get_items(Host, Node, From, SubId, SMaxItems, ItemIDs) -> MaxItems = if SMaxItems == "" -> get_max_items_node(Host); true -> case catch list_to_integer(SMaxItems) of {'EXIT', _} -> {error, ?ERR_BAD_REQUEST}; Val -> Val end end, case MaxItems of {error, Error} -> {error, Error}; _ -> Action = fun(#pubsub_node{options = Options, type = Type, id = NodeId, owners = Owners}) -> Features = features(Type), RetreiveFeature = lists:member("retrieve-items", Features), PersistentFeature = lists:member("persistent-items", Features), AccessModel = get_option(Options, access_model), AllowedGroups = get_option(Options, roster_groups_allowed, []), {PresenceSubscription, RosterGroup} = get_presence_and_roster_permissions(Host, From, Owners, AccessModel, AllowedGroups), if not RetreiveFeature -> %% Item Retrieval Not Supported {error, extended_error(?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "retrieve-items")}; not PersistentFeature -> %% Persistent Items Not Supported {error, extended_error(?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "persistent-items")}; true -> node_call(Type, get_items, [NodeId, From, AccessModel, PresenceSubscription, RosterGroup, SubId]) end end, case transaction(Host, Node, Action, sync_dirty) of {result, {_, Items}} -> SendItems = case ItemIDs of [] -> Items; _ -> lists:filter(fun(#pubsub_item{itemid = {ItemId, _}}) -> lists:member(ItemId, ItemIDs) end, Items) end, %% Generate the XML response (Item list), limiting the %% number of items sent to MaxItems: {result, [{xmlelement, "pubsub", [{"xmlns", ?NS_PUBSUB}], [{xmlelement, "items", nodeAttr(Node), itemsEls(lists:sublist(SendItems, MaxItems))}]}]}; Error -> Error end end. get_items(Host, Node) -> Action = fun(#pubsub_node{type = Type, id = NodeId}) -> node_call(Type, get_items, [NodeId, service_jid(Host)]) end, case transaction(Host, Node, Action, sync_dirty) of {result, {_, Items}} -> Items; Error -> Error end. get_item(Host, Node, ItemId) -> Action = fun(#pubsub_node{type = Type, id = NodeId}) -> node_call(Type, get_item, [NodeId, ItemId]) end, case transaction(Host, Node, Action, sync_dirty) of {result, {_, Items}} -> Items; Error -> Error end. get_allowed_items_call(Host, NodeIdx, From, Type, Options, Owners) -> AccessModel = get_option(Options, access_model), AllowedGroups = get_option(Options, roster_groups_allowed, []), {PresenceSubscription, RosterGroup} = get_presence_and_roster_permissions(Host, From, Owners, AccessModel, AllowedGroups), node_call(Type, get_items, [NodeIdx, From, AccessModel, PresenceSubscription, RosterGroup, undefined]). %% @spec (Host, Node, NodeId, Type, LJID, Number) -> any() %% Host = pubsubHost() %% Node = pubsubNode() %% NodeId = pubsubNodeId() %% Type = pubsubNodeType() %% LJID = {U, S, []} %% Number = last | integer() %% @doc

Resend the items of a node to the user.

%% @todo use cache-last-item feature send_items(Host, Node, NodeId, Type, LJID, last) -> case get_cached_item(Host, NodeId) of undefined -> send_items(Host, Node, NodeId, Type, LJID, 1); LastItem -> {ModifNow, ModifUSR} = LastItem#pubsub_item.modification, Stanza = event_stanza_with_delay( [{xmlelement, "items", nodeAttr(Node), itemsEls([LastItem])}], ModifNow, ModifUSR), ejabberd_router:route(service_jid(Host), jlib:make_jid(LJID), Stanza) end; send_items(Host, Node, NodeId, Type, LJID, Number) -> ToSend = case node_action(Host, Type, get_items, [NodeId, LJID]) of {result, []} -> []; {result, Items} -> case Number of N when N > 0 -> lists:sublist(Items, N); _ -> Items end; _ -> [] end, Stanza = case ToSend of [LastItem] -> {ModifNow, ModifUSR} = LastItem#pubsub_item.modification, event_stanza_with_delay( [{xmlelement, "items", nodeAttr(Node), itemsEls(ToSend)}], ModifNow, ModifUSR); _ -> event_stanza( [{xmlelement, "items", nodeAttr(Node), itemsEls(ToSend)}]) end, ejabberd_router:route(service_jid(Host), jlib:make_jid(LJID), Stanza). %% @spec (Host, JID, Plugins) -> {error, Reason} | {result, Response} %% Host = host() %% JID = jid() %% Plugins = [Plugin::string()] %% Reason = stanzaError() %% Response = [pubsubIQResponse()] %% @doc

Return the list of affiliations as an XMPP response.

get_affiliations(Host, JID, Plugins) when is_list(Plugins) -> Result = lists:foldl( fun(Type, {Status, Acc}) -> Features = features(Type), RetrieveFeature = lists:member("retrieve-affiliations", Features), if not RetrieveFeature -> %% Service does not support retreive affiliatons {{error, extended_error(?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "retrieve-affiliations")}, Acc}; true -> {result, Affiliations} = node_action(Host, Type, get_entity_affiliations, [Host, JID]), {Status, [Affiliations|Acc]} end end, {ok, []}, Plugins), case Result of {ok, Affiliations} -> Entities = lists:flatmap( fun({_, none}) -> []; ({#pubsub_node{nodeid = {_, Node}}, Affiliation}) -> [{xmlelement, "affiliation", [{"affiliation", affiliation_to_string(Affiliation)}|nodeAttr(Node)], []}] end, lists:usort(lists:flatten(Affiliations))), {result, [{xmlelement, "pubsub", [{"xmlns", ?NS_PUBSUB}], [{xmlelement, "affiliations", [], Entities}]}]}; {Error, _} -> Error end; get_affiliations(Host, Node, JID) -> Action = fun(#pubsub_node{type = Type, id = NodeId}) -> Features = features(Type), RetrieveFeature = lists:member("modify-affiliations", Features), {result, Affiliation} = node_call(Type, get_affiliation, [NodeId, JID]), if not RetrieveFeature -> %% Service does not support modify affiliations {error, extended_error(?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "modify-affiliations")}; Affiliation /= owner -> %% Entity is not an owner {error, ?ERR_FORBIDDEN}; true -> node_call(Type, get_node_affiliations, [NodeId]) end end, case transaction(Host, Node, Action, sync_dirty) of {result, {_, []}} -> {error, ?ERR_ITEM_NOT_FOUND}; {result, {_, Affiliations}} -> Entities = lists:flatmap( fun({_, none}) -> []; ({AJID, Affiliation}) -> [{xmlelement, "affiliation", [{"jid", jlib:jid_to_string(AJID)}, {"affiliation", affiliation_to_string(Affiliation)}], []}] end, Affiliations), {result, [{xmlelement, "pubsub", [{"xmlns", ?NS_PUBSUB_OWNER}], [{xmlelement, "affiliations", nodeAttr(Node), Entities}]}]}; Error -> Error end. set_affiliations(Host, Node, From, EntitiesEls) -> Owner = jlib:jid_tolower(jlib:jid_remove_resource(From)), Entities = lists:foldl( fun(El, Acc) -> case Acc of error -> error; _ -> case El of {xmlelement, "affiliation", Attrs, _} -> JID = jlib:string_to_jid( xml:get_attr_s("jid", Attrs)), Affiliation = string_to_affiliation( xml:get_attr_s("affiliation", Attrs)), if (JID == error) or (Affiliation == false) -> error; true -> [{jlib:jid_tolower(JID), Affiliation} | Acc] end end end end, [], EntitiesEls), case Entities of error -> {error, ?ERR_BAD_REQUEST}; _ -> Action = fun(#pubsub_node{owners = Owners, type = Type, id = NodeId}=N) -> case lists:member(Owner, Owners) of true -> OwnerJID = jlib:make_jid(Owner), FilteredEntities = case Owners of [Owner] -> [E || E <- Entities, element(1, E) =/= OwnerJID]; _ -> Entities end, lists:foreach( fun({JID, Affiliation}) -> node_call(Type, set_affiliation, [NodeId, JID, Affiliation]), case Affiliation of owner -> NewOwner = jlib:jid_tolower(jlib:jid_remove_resource(JID)), NewOwners = [NewOwner|Owners], tree_call(Host, set_node, [N#pubsub_node{owners = NewOwners}]); none -> OldOwner = jlib:jid_tolower(jlib:jid_remove_resource(JID)), case lists:member(OldOwner, Owners) of true -> NewOwners = Owners--[OldOwner], tree_call(Host, set_node, [N#pubsub_node{owners = NewOwners}]); _ -> ok end; _ -> ok end end, FilteredEntities), {result, []}; _ -> {error, ?ERR_FORBIDDEN} end end, case transaction(Host, Node, Action, sync_dirty) of {result, {_, Result}} -> {result, Result}; Other -> Other end end. get_options(Host, Node, JID, SubID, Lang) -> Action = fun(#pubsub_node{type = Type, id = NodeID}) -> case lists:member("subscription-options", features(Type)) of true -> get_options_helper(JID, Lang, Node, NodeID, SubID, Type); false -> {error, extended_error( ?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "subscription-options")} end end, case transaction(Host, Node, Action, sync_dirty) of {result, {_Node, XForm}} -> {result, [XForm]}; Error -> Error end. get_options_helper(JID, Lang, Node, NodeID, SubID, Type) -> Subscriber = case jlib:string_to_jid(JID) of error -> {"", "", ""}; J -> jlib:jid_tolower(J) end, {result, Subs} = node_call(Type, get_subscriptions, [NodeID, Subscriber]), SubIDs = lists:foldl(fun({subscribed, SID}, Acc) -> [SID | Acc]; (_, Acc) -> Acc end, [], Subs), case {SubID, SubIDs} of {_, []} -> {error, extended_error(?ERR_NOT_ACCEPTABLE, "not-subscribed")}; {[], [SID]} -> read_sub(Subscriber, Node, NodeID, SID, Lang); {[], _} -> {error, extended_error(?ERR_NOT_ACCEPTABLE, "subid-required")}; {_, _} -> read_sub(Subscriber, Node, NodeID, SubID, Lang) end. read_sub(Subscriber, Node, NodeID, SubID, Lang) -> case pubsub_subscription:get_subscription(Subscriber, NodeID, SubID) of {error, notfound} -> {error, extended_error(?ERR_NOT_ACCEPTABLE, "invalid-subid")}; {result, #pubsub_subscription{options = Options}} -> {result, XdataEl} = pubsub_subscription:get_options_xform(Lang, Options), OptionsEl = {xmlelement, "options", [{"jid", jlib:jid_to_string(Subscriber)}, {"subid", SubID}|nodeAttr(Node)], [XdataEl]}, PubsubEl = {xmlelement, "pubsub", [{"xmlns", ?NS_PUBSUB}], [OptionsEl]}, {result, PubsubEl} end. set_options(Host, Node, JID, SubID, Configuration) -> Action = fun(#pubsub_node{type = Type, id = NodeID}) -> case lists:member("subscription-options", features(Type)) of true -> set_options_helper(Configuration, JID, NodeID, SubID, Type); false -> {error, extended_error( ?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "subscription-options")} end end, case transaction(Host, Node, Action, sync_dirty) of {result, {_Node, Result}} -> {result, Result}; Error -> Error end. set_options_helper(Configuration, JID, NodeID, SubID, Type) -> SubOpts = case pubsub_subscription:parse_options_xform(Configuration) of {result, GoodSubOpts} -> GoodSubOpts; _ -> invalid end, Subscriber = case jlib:string_to_jid(JID) of error -> {"", "", ""}; J -> jlib:jid_tolower(J) end, {result, Subs} = node_call(Type, get_subscriptions, [NodeID, Subscriber]), SubIDs = lists:foldl(fun({subscribed, SID}, Acc) -> [SID | Acc]; (_, Acc) -> Acc end, [], Subs), case {SubID, SubIDs} of {_, []} -> {error, extended_error(?ERR_NOT_ACCEPTABLE, "not-subscribed")}; {[], [SID]} -> write_sub(Subscriber, NodeID, SID, SubOpts); {[], _} -> {error, extended_error(?ERR_NOT_ACCEPTABLE, "subid-required")}; {_, _} -> write_sub(Subscriber, NodeID, SubID, SubOpts) end. write_sub(_Subscriber, _NodeID, _SubID, invalid) -> {error, extended_error(?ERR_BAD_REQUEST, "invalid-options")}; write_sub(Subscriber, NodeID, SubID, Options) -> case pubsub_subscription:set_subscription(Subscriber, NodeID, SubID, Options) of {error, notfound} -> {error, extended_error(?ERR_NOT_ACCEPTABLE, "invalid-subid")}; {result, _} -> {result, []} end. %% @spec (Host, Node, JID, Plugins) -> {error, Reason} | {result, Response} %% Host = host() %% Node = pubsubNode() %% JID = jid() %% Plugins = [Plugin::string()] %% Reason = stanzaError() %% Response = [pubsubIQResponse()] %% @doc

Return the list of subscriptions as an XMPP response.

get_subscriptions(Host, Node, JID, Plugins) when is_list(Plugins) -> Result = lists:foldl( fun(Type, {Status, Acc}) -> Features = features(Type), RetrieveFeature = lists:member("retrieve-subscriptions", Features), if not RetrieveFeature -> %% Service does not support retreive subscriptions {{error, extended_error(?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "retrieve-subscriptions")}, Acc}; true -> Subscriber = jlib:jid_remove_resource(JID), {result, Subscriptions} = node_action(Host, Type, get_entity_subscriptions, [Host, Subscriber]), {Status, [Subscriptions|Acc]} end end, {ok, []}, Plugins), case Result of {ok, Subscriptions} -> Entities = lists:flatmap( fun({_, none}) -> []; ({#pubsub_node{nodeid = {_, SubsNode}}, Subscription}) -> case Node of <<>> -> [{xmlelement, "subscription", [{"subscription", subscription_to_string(Subscription)}|nodeAttr(SubsNode)], []}]; SubsNode -> [{xmlelement, "subscription", [{"subscription", subscription_to_string(Subscription)}], []}]; _ -> [] end; ({_, none, _}) -> []; ({#pubsub_node{nodeid = {_, SubsNode}}, Subscription, SubID, SubJID}) -> case Node of <<>> -> [{xmlelement, "subscription", [{"jid", jlib:jid_to_string(SubJID)}, {"subid", SubID}, {"subscription", subscription_to_string(Subscription)}|nodeAttr(SubsNode)], []}]; SubsNode -> [{xmlelement, "subscription", [{"jid", jlib:jid_to_string(SubJID)}, {"subid", SubID}, {"subscription", subscription_to_string(Subscription)}], []}]; _ -> [] end; ({#pubsub_node{nodeid = {_, SubsNode}}, Subscription, SubJID}) -> case Node of <<>> -> [{xmlelement, "subscription", [{"jid", jlib:jid_to_string(SubJID)}, {"subscription", subscription_to_string(Subscription)}|nodeAttr(SubsNode)], []}]; SubsNode -> [{xmlelement, "subscription", [{"jid", jlib:jid_to_string(SubJID)}, {"subscription", subscription_to_string(Subscription)}], []}]; _ -> [] end end, lists:usort(lists:flatten(Subscriptions))), {result, [{xmlelement, "pubsub", [{"xmlns", ?NS_PUBSUB}], [{xmlelement, "subscriptions", [], Entities}]}]}; {Error, _} -> Error end. get_subscriptions(Host, Node, JID) -> Action = fun(#pubsub_node{type = Type, id = NodeId}) -> Features = features(Type), RetrieveFeature = lists:member("manage-subscriptions", Features), {result, Affiliation} = node_call(Type, get_affiliation, [NodeId, JID]), if not RetrieveFeature -> %% Service does not support manage subscriptions {error, extended_error(?ERR_FEATURE_NOT_IMPLEMENTED, unsupported, "manage-subscriptions")}; Affiliation /= owner -> %% Entity is not an owner {error, ?ERR_FORBIDDEN}; true -> node_call(Type, get_node_subscriptions, [NodeId]) end end, case transaction(Host, Node, Action, sync_dirty) of {result, {_, Subscriptions}} -> Entities = lists:flatmap( fun({_, none}) -> []; ({_, pending, _}) -> []; ({AJID, Subscription}) -> [{xmlelement, "subscription", [{"jid", jlib:jid_to_string(AJID)}, {"subscription", subscription_to_string(Subscription)}], []}]; ({AJID, Subscription, SubId}) -> [{xmlelement, "subscription", [{"jid", jlib:jid_to_string(AJID)}, {"subscription", subscription_to_string(Subscription)}, {"subid", SubId}], []}] end, Subscriptions), {result, [{xmlelement, "pubsub", [{"xmlns", ?NS_PUBSUB_OWNER}], [{xmlelement, "subscriptions", nodeAttr(Node), Entities}]}]}; Error -> Error end. set_subscriptions(Host, Node, From, EntitiesEls) -> Owner = jlib:jid_tolower(jlib:jid_remove_resource(From)), Entities = lists:foldl( fun(El, Acc) -> case Acc of error -> error; _ -> case El of {xmlelement, "subscription", Attrs, _} -> JID = jlib:string_to_jid( xml:get_attr_s("jid", Attrs)), Subscription = string_to_subscription( xml:get_attr_s("subscription", Attrs)), SubId = xml:get_attr_s("subid", Attrs), if (JID == error) or (Subscription == false) -> error; true -> [{jlib:jid_tolower(JID), Subscription, SubId} | Acc] end end end end, [], EntitiesEls), case Entities of error -> {error, ?ERR_BAD_REQUEST}; _ -> Notify = fun(JID, Sub, _SubId) -> Stanza = {xmlelement, "message", [], [{xmlelement, "pubsub", [{"xmlns", ?NS_PUBSUB}], [{xmlelement, "subscription", [{"jid", jlib:jid_to_string(JID)}, %{"subid", SubId}, {"subscription", subscription_to_string(Sub)} | nodeAttr(Node)], []}]}]}, ejabberd_router:route(service_jid(Host), jlib:make_jid(JID), Stanza) end, Action = fun(#pubsub_node{owners = Owners, type = Type, id = NodeId}) -> case lists:member(Owner, Owners) of true -> Result = lists:foldl(fun({JID, Subscription, SubId}, Acc) -> case node_call(Type, set_subscriptions, [NodeId, JID, Subscription, SubId]) of {error, Err} -> [{error, Err} | Acc]; _ -> Notify(JID, Subscription, SubId), Acc end end, [], Entities), case Result of [] -> {result, []}; _ -> {error, ?ERR_NOT_ACCEPTABLE} end; _ -> {error, ?ERR_FORBIDDEN} end end, case transaction(Host, Node, Action, sync_dirty) of {result, {_, Result}} -> {result, Result}; Other -> Other end end. get_presence_and_roster_permissions(Host, From, Owners, AccessModel, AllowedGroups) -> if (AccessModel == presence) or (AccessModel == roster) -> case Host of {User, Server, _} -> get_roster_info(User, Server, From, AllowedGroups); _ -> [{OUser, OServer, _}|_] = Owners, get_roster_info(OUser, OServer, From, AllowedGroups) end; true -> {true, true} end. %% @spec (OwnerUser, OwnerServer, {SubscriberUser, SubscriberServer, SubscriberResource}, AllowedGroups) %% -> {PresenceSubscription, RosterGroup} get_roster_info(_, _, {"", "", _}, _) -> {false, false}; get_roster_info(OwnerUser, OwnerServer, {SubscriberUser, SubscriberServer, _}, AllowedGroups) -> {Subscription, Groups} = ejabberd_hooks:run_fold( roster_get_jid_info, OwnerServer, {none, []}, [OwnerUser, OwnerServer, {SubscriberUser, SubscriberServer, ""}]), PresenceSubscription = (Subscription == both) orelse (Subscription == from) orelse ({OwnerUser, OwnerServer} == {SubscriberUser, SubscriberServer}), RosterGroup = lists:any(fun(Group) -> lists:member(Group, AllowedGroups) end, Groups), {PresenceSubscription, RosterGroup}; get_roster_info(OwnerUser, OwnerServer, JID, AllowedGroups) -> get_roster_info(OwnerUser, OwnerServer, jlib:jid_tolower(JID), AllowedGroups). %% @spec (AffiliationStr) -> Affiliation %% AffiliationStr = string() %% Affiliation = atom() %% @doc

Convert an affiliation type from string to atom.

string_to_affiliation("owner") -> owner; string_to_affiliation("publisher") -> publisher; string_to_affiliation("member") -> member; string_to_affiliation("outcast") -> outcast; string_to_affiliation("none") -> none; string_to_affiliation(_) -> false. %% @spec (SubscriptionStr) -> Subscription %% SubscriptionStr = string() %% Subscription = atom() %% @doc

Convert a subscription type from string to atom.

string_to_subscription("subscribed") -> subscribed; string_to_subscription("pending") -> pending; string_to_subscription("unconfigured") -> unconfigured; string_to_subscription("none") -> none; string_to_subscription(_) -> false. %% @spec (Affiliation) -> AffiliationStr %% Affiliation = atom() %% AffiliationStr = string() %% @doc

Convert an affiliation type from atom to string.

affiliation_to_string(owner) -> "owner"; affiliation_to_string(publisher) -> "publisher"; affiliation_to_string(member) -> "member"; affiliation_to_string(outcast) -> "outcast"; affiliation_to_string(_) -> "none". %% @spec (Subscription) -> SubscriptionStr %% Subscription = atom() %% SubscriptionStr = string() %% @doc

Convert a subscription type from atom to string.

subscription_to_string(subscribed) -> "subscribed"; subscription_to_string(pending) -> "pending"; subscription_to_string(unconfigured) -> "unconfigured"; subscription_to_string(_) -> "none". %% @spec (Node) -> NodeStr %% Node = pubsubNode() %% NodeStr = string() %% @doc

Convert a node type from pubsubNode to string.

node_to_string(Node) -> binary_to_list(Node). string_to_node(SNode) -> list_to_binary(SNode). %% @spec (Host) -> jid() %% Host = host() %% @doc

Generate pubsub service JID.

service_jid(Host) -> case Host of {U,S,_} -> {jid, U, S, "", U, S, ""}; _ -> {jid, "", Host, "", "", Host, ""} end. %% @spec (LJID, NotifyType, Depth, NodeOptions, SubOptions) -> boolean() %% LJID = jid() %% NotifyType = items | nodes %% Depth = integer() %% NodeOptions = [{atom(), term()}] %% SubOptions = [{atom(), term()}] %% @doc

Check if a notification must be delivered or not based on %% node and subscription options.

is_to_deliver(LJID, NotifyType, Depth, NodeOptions, SubOptions) -> sub_to_deliver(LJID, NotifyType, Depth, SubOptions) andalso node_to_deliver(LJID, NodeOptions). sub_to_deliver(_LJID, NotifyType, Depth, SubOptions) -> lists:all(fun (Option) -> sub_option_can_deliver(NotifyType, Depth, Option) end, SubOptions). node_to_deliver(LJID, NodeOptions) -> presence_can_deliver(LJID, get_option(NodeOptions, presence_based_delivery)). sub_option_can_deliver(items, _, {subscription_type, nodes}) -> false; sub_option_can_deliver(nodes, _, {subscription_type, items}) -> false; sub_option_can_deliver(_, _, {subscription_depth, all}) -> true; sub_option_can_deliver(_, Depth, {subscription_depth, D}) -> Depth =< D; sub_option_can_deliver(_, _, {deliver, false}) -> false; sub_option_can_deliver(_, _, {expire, When}) -> now() < When; sub_option_can_deliver(_, _, _) -> true. presence_can_deliver(_, false) -> true; presence_can_deliver({User, Server, Resource}, true) -> case ejabberd_sm:get_user_sessions(User, Server) of [] -> false; Ss -> lists:foldl(fun(_, true) -> true; ({session, _, _ , _, undefined, _}, _Acc) -> false; ({session, _, {_, _, R}, _, _Priority, _}, _Acc) -> case Resource of [] -> true; R -> true; _ -> false end end, false, Ss) end. state_can_deliver({U, S, R}, []) -> [{U, S, R}]; state_can_deliver({U, S, R}, SubOptions) -> %% Check SubOptions for 'show_values' case lists:keysearch('show_values', 1, SubOptions) of %% If not in suboptions, item can be delivered, case doesn't apply false -> [{U, S, R}]; %% If in a suboptions ... {_, {_, ShowValues}} -> %% Get subscriber resources Resources = case R of %% If the subscriber JID is a bare one, get all its resources [] -> user_resources(U, S); %% If the subscriber JID is a full one, use its resource R -> [R] end, %% For each resource, test if the item is allowed to be delivered %% based on resource state lists:foldl( fun(Resource, Acc) -> get_resource_state({U, S, Resource}, ShowValues, Acc) end, [], Resources) end. get_resource_state({U, S, R}, ShowValues, JIDs) -> %% Get user session PID case ejabberd_sm:get_session_pid(U, S, R) of %% If no PID, item can be delivered none -> lists:append([{U, S, R}], JIDs); %% If PID ... Pid -> %% Get user resource state %% TODO : add a catch clause Show = case ejabberd_c2s:get_presence(Pid) of {_, _, "available", _} -> "online"; {_, _, State, _} -> State end, %% Is current resource state listed in 'show-values' suboption ? case lists:member(Show, ShowValues) of %andalso Show =/= "online" of %% If yes, item can be delivered true -> lists:append([{U, S, R}], JIDs); %% If no, item can't be delivered false -> JIDs end end. %% @spec (Payload) -> int() %% Payload = term() %% @doc

Count occurence of XML elements in payload.

payload_xmlelements(Payload) -> payload_xmlelements(Payload, 0). payload_xmlelements([], Count) -> Count; payload_xmlelements([{xmlelement, _, _, _}|Tail], Count) -> payload_xmlelements(Tail, Count+1); payload_xmlelements([_|Tail], Count) -> payload_xmlelements(Tail, Count). %% @spec (Els) -> stanza() %% Els = [xmlelement()] %% @doc

Build pubsub event stanza

event_stanza(Els) -> event_stanza_withmoreels(Els, []). event_stanza_with_delay(Els, ModifNow, ModifUSR) -> DateTime = calendar:now_to_datetime(ModifNow), MoreEls = [jlib:timestamp_to_xml(DateTime, utc, ModifUSR, "")], event_stanza_withmoreels(Els, MoreEls). event_stanza_withmoreels(Els, MoreEls) -> {xmlelement, "message", [], [{xmlelement, "event", [{"xmlns", ?NS_PUBSUB_EVENT}], Els} | MoreEls]}. event_stanza(Event, EvAttr) -> event_stanza([{xmlelement, Event, EvAttr, []}]). event_stanza(Event, EvAttr, Entries) -> event_stanza([{xmlelement, Event, EvAttr, [{xmlelement, Entry, EnAttr, []} || {Entry, EnAttr} <- Entries]}]). event_stanza(Event, EvAttr, Entry, EnAttr, Payload) -> event_stanza([{xmlelement, Event, EvAttr, [{xmlelement, Entry, EnAttr, Payload}]}]). event_stanza(Event, EvAttr, Entry, EnAttr, Payload, Publisher) -> Stanza = event_stanza(Event, EvAttr, Entry, EnAttr, Payload), add_extended_headers(Stanza, extended_headers([jlib:jid_to_string(Publisher)])). %%%%%% broadcast functions broadcast_publish_item(Host, Node, NodeId, Type, NodeOptions, ItemId, Publisher, Payload, Removed) -> Publish = case get_option(NodeOptions, deliver_payloads) of true -> event_stanza("items", nodeAttr(Node), "item", itemAttr(ItemId), Payload, Publisher); false -> event_stanza("items", nodeAttr(Node), "item", itemAttr(ItemId), [], Publisher) end, case Removed of [] -> {result, broadcast(Host, Node, NodeId, Type, NodeOptions, items, true, Publish, true)}; _ -> Retract = event_stanza("items", nodeAttr(Node), [{"retract", itemAttr(Rid)} || Rid <- Removed]), Stanzas = [{true, Publish, true}, {get_option(NodeOptions, notify_retract), Retract, true}], {result, broadcast(Host, Node, NodeId, Type, NodeOptions, items, Stanzas)} end. broadcast_retract_items(Host, Node, NodeId, Type, NodeOptions, ItemIds) -> broadcast_retract_items(Host, Node, NodeId, Type, NodeOptions, ItemIds, notify_retract). broadcast_retract_items(_Host, _Node, _NodeId, _Type, _NodeOptions, [], _) -> {result, false}; broadcast_retract_items(Host, Node, NodeId, Type, NodeOptions, ItemIds, false) -> broadcast_retract_items(Host, Node, NodeId, Type, NodeOptions, ItemIds, notify_retract); broadcast_retract_items(Host, Node, NodeId, Type, NodeOptions, ItemIds, Notify) -> Stanza = event_stanza("items", nodeAttr(Node), [{"retract", itemAttr(Rid)} || Rid <- ItemIds]), {result, broadcast(Host, Node, NodeId, Type, NodeOptions, items, Notify, Stanza, true)}. broadcast_purge_node(Host, Node, NodeId, Type, NodeOptions) -> Stanza = event_stanza("purge", nodeAttr(Node)), {result, broadcast(Host, Node, NodeId, Type, NodeOptions, nodes, notify_retract, Stanza, false)}. broadcast_removed_node(Host, Node, NodeId, Type, NodeOptions) -> Stanza = event_stanza("delete", nodeAttr(Node)), {result, broadcast(Host, Node, NodeId, Type, NodeOptions, nodes, notify_delete, Stanza, false)}. broadcast_created_node(Host, Node, NodeId, Type, NodeOptions) -> Stanza = event_stanza("create", nodeAttr(Node)), {result, broadcast(Host, Node, NodeId, Type, NodeOptions, nodes, true, Stanza, true)}. broadcast_config_notification(Host, Node, NodeId, Type, NodeOptions, Lang) -> Stanza = case get_option(NodeOptions, deliver_payloads) of true -> event_stanza("configuration", nodeAttr(Node), "x", [{"xmlns", ?NS_XDATA}, {"type", "result"}], get_configure_xfields(Type, NodeOptions, Lang, [])); false -> event_stanza("configuration", nodeAttr(Node)) end, {result, broadcast(Host, Node, NodeId, Type, NodeOptions, nodes, notify_config, Stanza, false)}. broadcast(Host, Node, NodeId, Type, NodeOptions, Notify, Stanzas) -> Subs = node_subscriptions(Host, Node, NodeId, Type, NodeOptions, Notify), Result = [broadcast(Host, Node, NodeId, Type, NodeOptions, Subs, Stanza, SHIM) || {Cond, Stanza, SHIM} <- Stanzas, Cond =:= true], lists:member(true, Result). broadcast(Host, Node, NodeId, Type, NodeOptions, Notify, true, Stanza, SHIM) -> Subs = node_subscriptions(Host, Node, NodeId, Type, NodeOptions, Notify), broadcast(Host, Node, NodeId, Type, NodeOptions, Subs, Stanza, SHIM); broadcast(_Host, _Node, _NodeId, _Type, _NodeOptions, _Notify, false, _Stanza, _SHIM) -> false; broadcast(Host, Node, NodeId, Type, NodeOptions, Notify, Condition, Stanza, SHIM) -> broadcast(Host, Node, NodeId, Type, NodeOptions, Notify, get_option(NodeOptions, Condition), Stanza, SHIM). broadcast({U, S, R}, Node, NodeId, Type, NodeOptions, Subscriptions, Stanza, SHIM) -> broadcast(S, Node, NodeId, Type, NodeOptions, Subscriptions, Stanza, SHIM) or case ejabberd_sm:get_session_pid(U, S, user_resource(U, S, R)) of C2SPid when is_pid(C2SPid) -> %% set the from address on the notification to the bare JID of the account owner %% Also, add "replyto" if entity has presence subscription to the account owner %% See XEP-0163 1.1 section 4.3.1 Event = {pep_message, binary_to_list(Node)++"+notify"}, Message = case get_option(NodeOptions, notification_type, headline) of normal -> Stanza; MsgType -> add_message_type(Stanza, atom_to_list(MsgType)) end, ejabberd_c2s:broadcast(C2SPid, Event, jlib:make_jid(U, S, ""), Message), true; _ -> ?DEBUG("~p@~p has no session; can't deliver stanza: ~p", [U, S, Stanza]), false end; broadcast(_Host, _Node, _NodeId, _Type, _NodeOptions, [], _Stanza, _SHIM) -> false; broadcast(Host, _Node, _NodeId, _Type, NodeOptions, Subscriptions, Stanza, SHIM) -> From = service_jid(Host), Message = case get_option(NodeOptions, notification_type, headline) of normal -> Stanza; MsgType -> add_message_type(Stanza, atom_to_list(MsgType)) end, lists:foreach(fun({LJID, NodeName, SubIds}) -> Send = case {SHIM, SubIds} of {false, _} -> Message; {true, [_]} -> add_shim_headers(Message, collection_shim(NodeName)); {true, _} -> add_shim_headers(Message, lists:append(collection_shim(NodeName), subid_shim(SubIds))) end, ejabberd_router:route(From, jlib:make_jid(LJID), Send) end, Subscriptions), true. node_subscriptions(Host, Node, NodeId, Type, _NodeOptions, Notify) -> % TODO temporary dirty condition, should be improved using plugin or node options case Type of "flat" -> node_subscriptions_bare(Host, Node, NodeId, Type); "pep" -> node_subscriptions_bare(Host, Node, NodeId, Type); _ -> node_subscriptions_full(Host, Node, Notify) end. node_subscriptions_bare(Host, Node, NodeId, Type) -> case node_action(Host, Type, get_node_subscriptions, [NodeId]) of {result, Subs} -> SubsByJid = lists:foldl( fun({JID, subscribed, SubId}, Acc) -> case dict:is_key(JID, Acc) of true -> dict:append(JID, SubId, Acc); false -> dict:store(JID, [SubId], Acc) end; (_, Acc) -> Acc end, dict:new(), Subs), [{J, Node, S} || {J, S} <- dict:to_list(SubsByJid)]; _ -> [] end. node_subscriptions_full(Host, Node, NotifyType) -> Action = fun() -> Collection = tree_call(Host, get_parentnodes_tree, [Host, Node, service_jid(Host)]), {result, [{Depth, [{N, sub_with_options(N)} || N <- Nodes]} || {Depth, Nodes} <- Collection]} end, case transaction(Action, sync_dirty) of {result, CollSubs} -> subscribed_nodes_by_jid(NotifyType, CollSubs); _ -> [] end. subscribed_nodes_by_jid(NotifyType, SubsByDepth) -> NodesToDeliver = fun(Depth, Node, Subs, Acc) -> NodeName = case Node#pubsub_node.nodeid of {_, N} -> N; Other -> Other end, NodeOptions = Node#pubsub_node.options, lists:foldl(fun({LJID, SubID, SubOptions}, {JIDs, Recipients}) -> case is_to_deliver(LJID, NotifyType, Depth, NodeOptions, SubOptions) of true -> %% If is to deliver : case state_can_deliver(LJID, SubOptions) of [] -> {JIDs, Recipients}; JIDsToDeliver -> lists:foldl( fun(JIDToDeliver, {JIDsAcc, RecipientsAcc}) -> case lists:member(JIDToDeliver, JIDs) of %% check if the JIDs co-accumulator contains the Subscription Jid, false -> %% - if not, %% - add the Jid to JIDs list co-accumulator ; %% - create a tuple of the Jid, NodeId, and SubID (as list), %% and add the tuple to the Recipients list co-accumulator {[JIDToDeliver | JIDsAcc], [{JIDToDeliver, NodeName, [SubID]} | RecipientsAcc]}; true -> %% - if the JIDs co-accumulator contains the Jid %% get the tuple containing the Jid from the Recipient list co-accumulator {_, {JIDToDeliver, NodeName1, SubIDs}} = lists:keysearch(JIDToDeliver, 1, RecipientsAcc), %% delete the tuple from the Recipients list % v1 : Recipients1 = lists:keydelete(LJID, 1, Recipients), % v2 : Recipients1 = lists:keyreplace(LJID, 1, Recipients, {LJID, NodeId1, [SubID | SubIDs]}), %% add the SubID to the SubIDs list in the tuple, %% and add the tuple back to the Recipients list co-accumulator % v1.1 : {JIDs, lists:append(Recipients1, [{LJID, NodeId1, lists:append(SubIDs, [SubID])}])} % v1.2 : {JIDs, [{LJID, NodeId1, [SubID | SubIDs]} | Recipients1]} % v2: {JIDs, Recipients1} {JIDsAcc, lists:keyreplace(JIDToDeliver, 1, RecipientsAcc, {JIDToDeliver, NodeName1, [SubID | SubIDs]})} end end, {JIDs, Recipients}, JIDsToDeliver) end; false -> {JIDs, Recipients} end end, Acc, Subs) end, DepthsToDeliver = fun({Depth, SubsByNode}, Acc1) -> lists:foldl(fun({Node, Subs}, Acc2) -> NodesToDeliver(Depth, Node, Subs, Acc2) end, Acc1, SubsByNode) end, {_, JIDSubs} = lists:foldl(DepthsToDeliver, {[], []}, SubsByDepth), JIDSubs. sub_with_options(#pubsub_node{type = Type, id = NodeId}) -> case node_call(Type, get_node_subscriptions, [NodeId]) of {result, Subs} -> lists:foldl( fun({JID, subscribed, SubId}, Acc) -> [sub_with_options(JID, NodeId, SubId) | Acc]; (_, Acc) -> Acc end, [], Subs); _ -> [] end. sub_with_options(JID, NodeId, SubId) -> case pubsub_subscription:read_subscription(JID, NodeId, SubId) of #pubsub_subscription{options = Options} -> {JID, SubId, Options}; _ -> {JID, SubId, []} end. user_resources(User, Server) -> ejabberd_sm:get_user_resources(User, Server). user_resource(User, Server, []) -> case user_resources(User, Server) of [R|_] -> R; _ -> [] end; user_resource(_, _, Resource) -> Resource. %%%%%%% Configuration handling %%

There are several reasons why the default node configuration options request might fail:

%% get_configure(Host, ServerHost, Node, From, Lang) -> Action = fun(#pubsub_node{options = Options, type = Type, id = NodeId}) -> case node_call(Type, get_affiliation, [NodeId, From]) of {result, owner} -> Groups = ejabberd_hooks:run_fold(roster_groups, ServerHost, [], [ServerHost]), {result, [{xmlelement, "pubsub", [{"xmlns", ?NS_PUBSUB_OWNER}], [{xmlelement, "configure", nodeAttr(Node), [{xmlelement, "x", [{"xmlns", ?NS_XDATA}, {"type", "form"}], get_configure_xfields(Type, Options, Lang, Groups) }]}]}]}; _ -> {error, ?ERR_FORBIDDEN} end end, case transaction(Host, Node, Action, sync_dirty) of {result, {_, Result}} -> {result, Result}; Other -> Other end. get_default(Host, Node, _From, Lang) -> Type = select_type(Host, Host, Node), Options = node_options(Type), {result, [{xmlelement, "pubsub", [{"xmlns", ?NS_PUBSUB_OWNER}], [{xmlelement, "default", [], [{xmlelement, "x", [{"xmlns", ?NS_XDATA}, {"type", "form"}], get_configure_xfields(Type, Options, Lang, []) }]}]}]}. %% Get node option %% The result depend of the node type plugin system. get_option([], _) -> false; get_option(Options, Var) -> get_option(Options, Var, false). get_option(Options, Var, Def) -> case lists:keysearch(Var, 1, Options) of {value, {_Val, Ret}} -> Ret; _ -> Def end. %% Get default options from the module plugin. node_options(Type) -> Module = list_to_atom(?PLUGIN_PREFIX ++ Type), case catch Module:options() of {'EXIT',{undef,_}} -> DefaultModule = list_to_atom(?PLUGIN_PREFIX++?STDNODE), DefaultModule:options(); Result -> Result end. %% @spec (Host, Options) -> MaxItems %% Host = host() %% Options = [Option] %% Option = {Key::atom(), Value::term()} %% MaxItems = integer() | unlimited %% @doc

Return the maximum number of items for a given node.

%%

Unlimited means that there is no limit in the number of items that can %% be stored.

%% @todo In practice, the current data structure means that we cannot manage %% millions of items on a given node. This should be addressed in a new %% version. max_items(Host, Options) -> case get_option(Options, persist_items) of true -> case get_option(Options, max_items) of false -> unlimited; Result when (Result < 0) -> 0; Result -> Result end; false -> case get_option(Options, send_last_published_item) of never -> 0; _ -> case is_last_item_cache_enabled(Host) of true -> 0; false -> 1 end end end. -define(BOOL_CONFIG_FIELD(Label, Var), ?BOOLXFIELD(Label, "pubsub#" ++ atom_to_list(Var), get_option(Options, Var))). -define(STRING_CONFIG_FIELD(Label, Var), ?STRINGXFIELD(Label, "pubsub#" ++ atom_to_list(Var), get_option(Options, Var, ""))). -define(INTEGER_CONFIG_FIELD(Label, Var), ?STRINGXFIELD(Label, "pubsub#" ++ atom_to_list(Var), integer_to_list(get_option(Options, Var)))). -define(JLIST_CONFIG_FIELD(Label, Var, Opts), ?LISTXFIELD(Label, "pubsub#" ++ atom_to_list(Var), jlib:jid_to_string(get_option(Options, Var)), [jlib:jid_to_string(O) || O <- Opts])). -define(ALIST_CONFIG_FIELD(Label, Var, Opts), ?LISTXFIELD(Label, "pubsub#" ++ atom_to_list(Var), atom_to_list(get_option(Options, Var)), [atom_to_list(O) || O <- Opts])). -define(LISTM_CONFIG_FIELD(Label, Var, Opts), ?LISTMXFIELD(Label, "pubsub#" ++ atom_to_list(Var), get_option(Options, Var), Opts)). -define(NLIST_CONFIG_FIELD(Label, Var), ?STRINGMXFIELD(Label, "pubsub#" ++ atom_to_list(Var), [node_to_string(N) || N <- get_option(Options, Var, [])])). get_configure_xfields(_Type, Options, Lang, Groups) -> [?XFIELD("hidden", "", "FORM_TYPE", ?NS_PUBSUB_NODE_CONFIG), ?BOOL_CONFIG_FIELD("Deliver payloads with event notifications", deliver_payloads), ?BOOL_CONFIG_FIELD("Deliver event notifications", deliver_notifications), ?BOOL_CONFIG_FIELD("Notify subscribers when the node configuration changes", notify_config), ?BOOL_CONFIG_FIELD("Notify subscribers when the node is deleted", notify_delete), ?BOOL_CONFIG_FIELD("Notify subscribers when items are removed from the node", notify_retract), ?BOOL_CONFIG_FIELD("Persist items to storage", persist_items), ?STRING_CONFIG_FIELD("A friendly name for the node", title), ?INTEGER_CONFIG_FIELD("Max # of items to persist", max_items), ?BOOL_CONFIG_FIELD("Whether to allow subscriptions", subscribe), ?ALIST_CONFIG_FIELD("Specify the access model", access_model, [open, authorize, presence, roster, whitelist]), %% XXX: change to list-multi, include current roster groups as options ?LISTM_CONFIG_FIELD("Roster groups allowed to subscribe", roster_groups_allowed, Groups), ?ALIST_CONFIG_FIELD("Specify the publisher model", publish_model, [publishers, subscribers, open]), ?BOOL_CONFIG_FIELD("Purge all items when the relevant publisher goes offline", purge_offline), ?ALIST_CONFIG_FIELD("Specify the event message type", notification_type, [headline, normal]), ?INTEGER_CONFIG_FIELD("Max payload size in bytes", max_payload_size), ?ALIST_CONFIG_FIELD("When to send the last published item", send_last_published_item, [never, on_sub, on_sub_and_presence]), ?BOOL_CONFIG_FIELD("Only deliver notifications to available users", presence_based_delivery), ?NLIST_CONFIG_FIELD("The collections with which a node is affiliated", collection) ]. %%

There are several reasons why the node configuration request might fail:

%% set_configure(Host, Node, From, Els, Lang) -> case xml:remove_cdata(Els) of [{xmlelement, "x", _Attrs1, _Els1} = XEl] -> case {xml:get_tag_attr_s("xmlns", XEl), xml:get_tag_attr_s("type", XEl)} of {?NS_XDATA, "cancel"} -> {result, []}; {?NS_XDATA, "submit"} -> Action = fun(#pubsub_node{options = Options, type = Type, id = NodeId} = N) -> case node_call(Type, get_affiliation, [NodeId, From]) of {result, owner} -> case jlib:parse_xdata_submit(XEl) of invalid -> {error, ?ERR_BAD_REQUEST}; XData -> OldOpts = case Options of [] -> node_options(Type); _ -> Options end, case set_xoption(Host, XData, OldOpts) of NewOpts when is_list(NewOpts) -> case tree_call(Host, set_node, [N#pubsub_node{options = NewOpts}]) of ok -> {result, ok}; Err -> Err end; Err -> Err end end; _ -> {error, ?ERR_FORBIDDEN} end end, case transaction(Host, Node, Action, transaction) of {result, {TNode, ok}} -> NodeId = TNode#pubsub_node.id, Type = TNode#pubsub_node.type, Options = TNode#pubsub_node.options, broadcast_config_notification(Host, Node, NodeId, Type, Options, Lang), {result, []}; Other -> Other end; _ -> {error, ?ERR_BAD_REQUEST} end; _ -> {error, ?ERR_BAD_REQUEST} end. add_opt(Key, Value, Opts) -> Opts1 = lists:keydelete(Key, 1, Opts), [{Key, Value} | Opts1]. -define(SET_BOOL_XOPT(Opt, Val), BoolVal = case Val of "0" -> false; "1" -> true; "false" -> false; "true" -> true; _ -> error end, case BoolVal of error -> {error, ?ERR_NOT_ACCEPTABLE}; _ -> set_xoption(Host, Opts, add_opt(Opt, BoolVal, NewOpts)) end). -define(SET_STRING_XOPT(Opt, Val), set_xoption(Host, Opts, add_opt(Opt, Val, NewOpts))). -define(SET_INTEGER_XOPT(Opt, Val, Min, Max), case catch list_to_integer(Val) of IVal when is_integer(IVal), IVal >= Min, IVal =< Max -> set_xoption(Host, Opts, add_opt(Opt, IVal, NewOpts)); _ -> {error, ?ERR_NOT_ACCEPTABLE} end). -define(SET_ALIST_XOPT(Opt, Val, Vals), case lists:member(Val, [atom_to_list(V) || V <- Vals]) of true -> set_xoption(Host, Opts, add_opt(Opt, list_to_atom(Val), NewOpts)); false -> {error, ?ERR_NOT_ACCEPTABLE} end). -define(SET_LIST_XOPT(Opt, Val), set_xoption(Host, Opts, add_opt(Opt, Val, NewOpts))). set_xoption(_Host, [], NewOpts) -> NewOpts; set_xoption(Host, [{"FORM_TYPE", _} | Opts], NewOpts) -> set_xoption(Host, Opts, NewOpts); set_xoption(Host, [{"pubsub#roster_groups_allowed", Value} | Opts], NewOpts) -> ?SET_LIST_XOPT(roster_groups_allowed, Value); set_xoption(Host, [{"pubsub#deliver_payloads", [Val]} | Opts], NewOpts) -> ?SET_BOOL_XOPT(deliver_payloads, Val); set_xoption(Host, [{"pubsub#deliver_notifications", [Val]} | Opts], NewOpts) -> ?SET_BOOL_XOPT(deliver_notifications, Val); set_xoption(Host, [{"pubsub#notify_config", [Val]} | Opts], NewOpts) -> ?SET_BOOL_XOPT(notify_config, Val); set_xoption(Host, [{"pubsub#notify_delete", [Val]} | Opts], NewOpts) -> ?SET_BOOL_XOPT(notify_delete, Val); set_xoption(Host, [{"pubsub#notify_retract", [Val]} | Opts], NewOpts) -> ?SET_BOOL_XOPT(notify_retract, Val); set_xoption(Host, [{"pubsub#persist_items", [Val]} | Opts], NewOpts) -> ?SET_BOOL_XOPT(persist_items, Val); set_xoption(Host, [{"pubsub#max_items", [Val]} | Opts], NewOpts) -> MaxItems = get_max_items_node(Host), ?SET_INTEGER_XOPT(max_items, Val, 0, MaxItems); set_xoption(Host, [{"pubsub#subscribe", [Val]} | Opts], NewOpts) -> ?SET_BOOL_XOPT(subscribe, Val); set_xoption(Host, [{"pubsub#access_model", [Val]} | Opts], NewOpts) -> ?SET_ALIST_XOPT(access_model, Val, [open, authorize, presence, roster, whitelist]); set_xoption(Host, [{"pubsub#publish_model", [Val]} | Opts], NewOpts) -> ?SET_ALIST_XOPT(publish_model, Val, [publishers, subscribers, open]); set_xoption(Host, [{"pubsub#notification_type", [Val]} | Opts], NewOpts) -> ?SET_ALIST_XOPT(notification_type, Val, [headline, normal]); set_xoption(Host, [{"pubsub#node_type", [Val]} | Opts], NewOpts) -> ?SET_ALIST_XOPT(node_type, Val, [leaf, collection]); set_xoption(Host, [{"pubsub#max_payload_size", [Val]} | Opts], NewOpts) -> ?SET_INTEGER_XOPT(max_payload_size, Val, 0, ?MAX_PAYLOAD_SIZE); set_xoption(Host, [{"pubsub#send_last_published_item", [Val]} | Opts], NewOpts) -> ?SET_ALIST_XOPT(send_last_published_item, Val, [never, on_sub, on_sub_and_presence]); set_xoption(Host, [{"pubsub#presence_based_delivery", [Val]} | Opts], NewOpts) -> ?SET_BOOL_XOPT(presence_based_delivery, Val); set_xoption(Host, [{"pubsub#purge_offline", [Val]} | Opts], NewOpts) -> ?SET_BOOL_XOPT(purge_offline, Val); set_xoption(Host, [{"pubsub#title", Value} | Opts], NewOpts) -> ?SET_STRING_XOPT(title, Value); set_xoption(Host, [{"pubsub#type", Value} | Opts], NewOpts) -> ?SET_STRING_XOPT(type, Value); set_xoption(Host, [{"pubsub#body_xslt", Value} | Opts], NewOpts) -> ?SET_STRING_XOPT(body_xslt, Value); set_xoption(Host, [{"pubsub#collection", Value} | Opts], NewOpts) -> NewValue = [string_to_node(V) || V <- Value], ?SET_LIST_XOPT(collection, NewValue); set_xoption(Host, [{"pubsub#node", [Value]} | Opts], NewOpts) -> NewValue = string_to_node(Value), ?SET_LIST_XOPT(node, NewValue); set_xoption(Host, [_ | Opts], NewOpts) -> % skip unknown field set_xoption(Host, Opts, NewOpts). get_max_items_node({_, ServerHost, _}) -> get_max_items_node(ServerHost); get_max_items_node(Host) -> case catch ets:lookup(gen_mod:get_module_proc(Host, config), max_items_node) of [{max_items_node, Integer}] -> Integer; _ -> ?MAXITEMS end. %%%% last item cache handling is_last_item_cache_enabled({_, ServerHost, _}) -> is_last_item_cache_enabled(ServerHost); is_last_item_cache_enabled(Host) -> case catch ets:lookup(gen_mod:get_module_proc(Host, config), last_item_cache) of [{last_item_cache, true}] -> true; _ -> false end. set_cached_item({_, ServerHost, _}, NodeId, ItemId, Publisher, Payload) -> set_cached_item(ServerHost, NodeId, ItemId, Publisher, Payload); set_cached_item(Host, NodeId, ItemId, Publisher, Payload) -> case is_last_item_cache_enabled(Host) of true -> mnesia:dirty_write({pubsub_last_item, NodeId, ItemId, {now(), jlib:jid_tolower(jlib:jid_remove_resource(Publisher))}, Payload}); _ -> ok end. unset_cached_item({_, ServerHost, _}, NodeId) -> unset_cached_item(ServerHost, NodeId); unset_cached_item(Host, NodeId) -> case is_last_item_cache_enabled(Host) of true -> mnesia:dirty_delete({pubsub_last_item, NodeId}); _ -> ok end. get_cached_item({_, ServerHost, _}, NodeId) -> get_cached_item(ServerHost, NodeId); get_cached_item(Host, NodeId) -> case is_last_item_cache_enabled(Host) of true -> case mnesia:dirty_read({pubsub_last_item, NodeId}) of [{pubsub_last_item, NodeId, ItemId, Creation, Payload}] -> #pubsub_item{itemid = {ItemId, NodeId}, payload = Payload, creation = Creation, modification = Creation}; _ -> undefined end; _ -> undefined end. %%%% plugin handling host(ServerHost) -> case catch ets:lookup(gen_mod:get_module_proc(ServerHost, config), host) of [{host, Host}] -> Host; _ -> "pubsub."++ServerHost end. plugins(Host) -> case catch ets:lookup(gen_mod:get_module_proc(Host, config), plugins) of [{plugins, []}] -> [?STDNODE]; [{plugins, PL}] -> PL; _ -> [?STDNODE] end. select_type(ServerHost, Host, Node, Type)-> SelectedType = case Host of {_User, _Server, _Resource} -> case catch ets:lookup(gen_mod:get_module_proc(ServerHost, config), pep_mapping) of [{pep_mapping, PM}] -> proplists:get_value(node_to_string(Node), PM, ?PEPNODE); _ -> ?PEPNODE end; _ -> Type end, ConfiguredTypes = plugins(ServerHost), case lists:member(SelectedType, ConfiguredTypes) of true -> SelectedType; false -> hd(ConfiguredTypes) end. select_type(ServerHost, Host, Node) -> select_type(ServerHost, Host, Node, hd(plugins(ServerHost))). features() -> [ % see plugin "access-authorize", % OPTIONAL "access-open", % OPTIONAL this relates to access_model option in node_hometree "access-presence", % OPTIONAL this relates to access_model option in node_pep %TODO "access-roster", % OPTIONAL "access-whitelist", % OPTIONAL % see plugin "auto-create", % OPTIONAL % see plugin "auto-subscribe", % RECOMMENDED "collections", % RECOMMENDED "config-node", % RECOMMENDED "create-and-configure", % RECOMMENDED % see plugin "create-nodes", % RECOMMENDED % see plugin "delete-items", % RECOMMENDED % see plugin "delete-nodes", % RECOMMENDED % see plugin "filtered-notifications", % RECOMMENDED % see plugin "get-pending", % OPTIONAL % see plugin "instant-nodes", % RECOMMENDED "item-ids", % RECOMMENDED "last-published", % RECOMMENDED %TODO "cache-last-item", %TODO "leased-subscription", % OPTIONAL % see plugin "manage-subscriptions", % OPTIONAL "member-affiliation", % RECOMMENDED %TODO "meta-data", % RECOMMENDED % see plugin "modify-affiliations", % OPTIONAL % see plugin "multi-collection", % OPTIONAL % see plugin "multi-subscribe", % OPTIONAL % see plugin "outcast-affiliation", % RECOMMENDED % see plugin "persistent-items", % RECOMMENDED "presence-notifications", % OPTIONAL "presence-subscribe", % RECOMMENDED % see plugin "publish", % REQUIRED %TODO "publish-options", % OPTIONAL "publisher-affiliation", % RECOMMENDED % see plugin "purge-nodes", % OPTIONAL % see plugin "retract-items", % OPTIONAL % see plugin "retrieve-affiliations", % RECOMMENDED "retrieve-default" % RECOMMENDED % see plugin "retrieve-items", % RECOMMENDED % see plugin "retrieve-subscriptions", % RECOMMENDED %TODO "shim", % OPTIONAL % see plugin "subscribe", % REQUIRED % see plugin "subscription-options", % OPTIONAL % see plugin "subscription-notifications" % OPTIONAL ]. features(Type) -> Module = list_to_atom(?PLUGIN_PREFIX++Type), features() ++ case catch Module:features() of {'EXIT', {undef, _}} -> []; Result -> Result end. features(Host, <<>>) -> lists:usort(lists:foldl(fun(Plugin, Acc) -> Acc ++ features(Plugin) end, [], plugins(Host))); features(Host, Node) -> Action = fun(#pubsub_node{type = Type}) -> {result, features(Type)} end, case transaction(Host, Node, Action, sync_dirty) of {result, Features} -> lists:usort(features() ++ Features); _ -> features() end. %% @doc

node tree plugin call.

tree_call({_User, Server, _Resource}, Function, Args) -> tree_call(Server, Function, Args); tree_call(Host, Function, Args) -> ?DEBUG("tree_call ~p ~p ~p",[Host, Function, Args]), Module = case catch ets:lookup(gen_mod:get_module_proc(Host, config), nodetree) of [{nodetree, N}] -> N; _ -> list_to_atom(?TREE_PREFIX ++ ?STDTREE) end, catch apply(Module, Function, Args). tree_action(Host, Function, Args) -> ?DEBUG("tree_action ~p ~p ~p",[Host,Function,Args]), Fun = fun() -> tree_call(Host, Function, Args) end, catch mnesia:sync_dirty(Fun). %% @doc

node plugin call.

node_call(Type, Function, Args) -> ?DEBUG("node_call ~p ~p ~p",[Type, Function, Args]), Module = list_to_atom(?PLUGIN_PREFIX++Type), case apply(Module, Function, Args) of {result, Result} -> {result, Result}; {error, Error} -> {error, Error}; {'EXIT', {undef, Undefined}} -> case Type of ?STDNODE -> {error, {undef, Undefined}}; _ -> node_call(?STDNODE, Function, Args) end; {'EXIT', Reason} -> {error, Reason}; Result -> {result, Result} %% any other return value is forced as result end. node_action(Host, Type, Function, Args) -> ?DEBUG("node_action ~p ~p ~p ~p",[Host,Type,Function,Args]), transaction(fun() -> node_call(Type, Function, Args) end, sync_dirty). %% @doc

plugin transaction handling.

transaction(Host, Node, Action, Trans) -> transaction(fun() -> case tree_call(Host, get_node, [Host, Node]) of N when is_record(N, pubsub_node) -> case Action(N) of {result, Result} -> {result, {N, Result}}; {atomic, {result, Result}} -> {result, {N, Result}}; Other -> Other end; Error -> Error end end, Trans). transaction(Host, Action, Trans) -> transaction(fun() -> {result, lists:foldl(Action, [], tree_call(Host, get_nodes, [Host]))} end, Trans). transaction(Fun, Trans) -> case catch mnesia:Trans(Fun) of {result, Result} -> {result, Result}; {error, Error} -> {error, Error}; {atomic, {result, Result}} -> {result, Result}; {atomic, {error, Error}} -> {error, Error}; {aborted, Reason} -> ?ERROR_MSG("transaction return internal error: ~p~n", [{aborted, Reason}]), {error, ?ERR_INTERNAL_SERVER_ERROR}; {'EXIT', Reason} -> ?ERROR_MSG("transaction return internal error: ~p~n", [{'EXIT', Reason}]), {error, ?ERR_INTERNAL_SERVER_ERROR}; Other -> ?ERROR_MSG("transaction return internal error: ~p~n", [Other]), {error, ?ERR_INTERNAL_SERVER_ERROR} end. %%%% helpers %% Add pubsub-specific error element extended_error(Error, Ext) -> extended_error(Error, Ext, [{"xmlns", ?NS_PUBSUB_ERRORS}]). extended_error(Error, unsupported, Feature) -> extended_error(Error, "unsupported", [{"xmlns", ?NS_PUBSUB_ERRORS}, {"feature", Feature}]); extended_error({xmlelement, Error, Attrs, SubEls}, Ext, ExtAttrs) -> {xmlelement, Error, Attrs, lists:reverse([{xmlelement, Ext, ExtAttrs, []} | SubEls])}. %% Give a uniq identifier uniqid() -> {T1, T2, T3} = now(), lists:flatten(io_lib:fwrite("~.16B~.16B~.16B", [T1, T2, T3])). % node attributes nodeAttr(Node) when is_list(Node) -> [{"node", Node}]; nodeAttr(Node) -> [{"node", node_to_string(Node)}]. % item attributes itemAttr([]) -> []; itemAttr(ItemId) -> [{"id", ItemId}]. % build item elements from item list itemsEls(Items) -> lists:map(fun(#pubsub_item{itemid = {ItemId, _}, payload = Payload}) -> {xmlelement, "item", itemAttr(ItemId), Payload} end, Items). add_message_type({xmlelement, "message", Attrs, Els}, Type) -> {xmlelement, "message", [{"type", Type}|Attrs], Els}; add_message_type(XmlEl, _Type) -> XmlEl. %% Place of changed at the bottom of the stanza %% cf. http://xmpp.org/extensions/xep-0060.html#publisher-publish-success-subid %% %% "[SHIM Headers] SHOULD be included after the event notification information %% (i.e., as the last child of the stanza)". add_shim_headers(Stanza, HeaderEls) -> add_headers(Stanza, "headers", ?NS_SHIM, HeaderEls). add_extended_headers(Stanza, HeaderEls) -> add_headers(Stanza, "addresses", ?NS_ADDRESS, HeaderEls). add_headers({xmlelement, Name, Attrs, Els}, HeaderName, HeaderNS, HeaderEls) -> HeaderEl = {xmlelement, HeaderName, [{"xmlns", HeaderNS}], HeaderEls}, {xmlelement, Name, Attrs, lists:append(Els, [HeaderEl])}. %% Removed multiple
Foo
elements %% Didn't seem compliant, but not sure. Confirmation required. %% cf. http://xmpp.org/extensions/xep-0248.html#notify %% %% "If an item is published to a node which is also included by a collection, %% and an entity is subscribed to that collection with a subscription type of %% "items" (Is there a way to check that currently ?), then the notifications %% generated by the service MUST contain additional information. The %% element contained in the notification message MUST specify the node %% identifier of the node that generated the notification (not the collection) %% and the element MUST contain a SHIM header that specifies the node %% identifier of the collection". collection_shim(Node) -> [{xmlelement, "header", [{"name", "Collection"}], [{xmlcdata, node_to_string(Node)}]}]. subid_shim(SubIDs) -> [{xmlelement, "header", [{"name", "SubID"}], [{xmlcdata, SubID}]} || SubID <- SubIDs]. %% The argument is a list of Jids because this function could be used %% with the 'pubsub#replyto' (type=jid-multi) node configuration. extended_headers(Jids) -> [{xmlelement, "address", [{"type", "replyto"}, {"jid", Jid}], []} || Jid <- Jids]. on_user_offline(_, JID, _) -> {User, Server, Resource} = jlib:jid_tolower(JID), case user_resources(User, Server) of [] -> purge_offline({User, Server, Resource}); _ -> true end. purge_offline({User, Server, _} = LJID) -> Host = host(element(2, LJID)), Plugins = plugins(Host), Result = lists:foldl( fun(Type, {Status, Acc}) -> case lists:member("retrieve-affiliations", features(Type)) of false -> {{error, extended_error('feature-not-implemented', unsupported, "retrieve-affiliations")}, Acc}; true -> {result, Affiliations} = node_action(Host, Type, get_entity_affiliations, [Host, LJID]), {Status, [Affiliations|Acc]} end end, {ok, []}, Plugins), case Result of {ok, Affiliations} -> lists:foreach( fun({#pubsub_node{nodeid = {_, NodeId}, options = Options, type = Type}, Affiliation}) when Affiliation == 'owner' orelse Affiliation == 'publisher' -> Action = fun(#pubsub_node{type = NType, id = NodeIdx}) -> node_call(NType, get_items, [NodeIdx, service_jid(Host)]) end, case transaction(Host, NodeId, Action, sync_dirty) of {result, {_, []}} -> true; {result, {_, Items}} -> Features = features(Type), case {lists:member("retract-items", Features), lists:member("persistent-items", Features), get_option(Options, persist_items), get_option(Options, purge_offline)} of {true, true, true, true} -> ForceNotify = get_option(Options, notify_retract), lists:foreach( fun(#pubsub_item{itemid = {ItemId, _}, modification = {_, Modification}}) -> case Modification of {User, Server, _} -> delete_item(Host, NodeId, LJID, ItemId, ForceNotify); _ -> true end; (_) -> true end, Items); _ -> true end; Error -> Error end; (_) -> true end, lists:usort(lists:flatten(Affiliations))); {Error, _} -> ?DEBUG("on_user_offline ~p", [Error]) end.