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xmpp.chapril.org-ejabberd/src/node_hometree_odbc.erl
Christophe Romain 0266207e9d fix pubsub unsubscription without SubId on odbc
2013-07-04 15:13:21 +02:00

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%%% ====================================================================
%%% ``The contents of this file are subject to the Erlang Public License,
%%% Version 1.1, (the "License"); you may not use this file except in
%%% compliance with the License. You should have received a copy of the
%%% Erlang Public License along with this software. If not, it can be
%%% retrieved via the world wide web at http://www.erlang.org/.
%%%
%%%
%%% Software distributed under the License is distributed on an "AS IS"
%%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%%% the License for the specific language governing rights and limitations
%%% under the License.
%%%
%%%
%%% The Initial Developer of the Original Code is ProcessOne.
%%% Portions created by ProcessOne are Copyright 2006-2013, ProcessOne
%%% All Rights Reserved.''
%%% This software is copyright 2006-2013, ProcessOne.
%%%
%%%
%%% @copyright 2006-2013 ProcessOne
%%% @author Christophe Romain <christophe.romain@process-one.net>
%%% [http://www.process-one.net/]
%%% @version {@vsn}, {@date} {@time}
%%% @end
%%% ====================================================================
%%% @todo The item table should be handled by the plugin, but plugin that do
%%% not want to manage it should be able to use the default behaviour.
%%% @todo Plugin modules should be able to register to receive presence update
%%% send to pubsub.
%%% @doc The module <strong>{@module}</strong> is the default PubSub plugin.
%%% <p>It is used as a default for all unknown PubSub node type. It can serve
%%% as a developer basis and reference to build its own custom pubsub node
%%% types.</p>
%%% <p>PubSub plugin nodes are using the {@link gen_node} behaviour.</p>
%%% <p><strong>The API isn't stabilized yet</strong>. The pubsub plugin
%%% development is still a work in progress. However, the system is already
%%% useable and useful as is. Please, send us comments, feedback and
%%% improvements.</p>
-module(node_hometree_odbc).
-author('christophe.romain@process-one.net').
-include("pubsub.hrl").
-include("jlib.hrl").
-define(PUBSUB, mod_pubsub_odbc).
-behaviour(gen_pubsub_node).
%% API definition
-export([init/3, terminate/2, options/0, features/0,
create_node_permission/6, create_node/2, delete_node/1,
purge_node/2, subscribe_node/8, unsubscribe_node/4,
publish_item/6, delete_item/4, remove_extra_items/3,
get_entity_affiliations/2, get_node_affiliations/1,
get_affiliation/2, set_affiliation/3,
get_entity_subscriptions/2,
get_entity_subscriptions_for_send_last/2,
get_node_subscriptions/1, get_subscriptions/2,
set_subscriptions/4, get_pending_nodes/2, get_states/1,
get_state/2, set_state/1, get_items/7, get_items/6,
get_items/3, get_items/2, get_item/7, get_item/2,
set_item/1, get_item_name/3, get_last_items/3,
path_to_node/1, node_to_path/1]).
-export([decode_jid/1,
decode_affiliation/1, decode_subscriptions/1,
encode_jid/1, encode_affiliation/1,
encode_subscriptions/1]).
%% ================
%% API definition
%% ================
%% @spec (Host, ServerHost, Opts) -> any()
%% Host = mod_pubsub:host()
%% ServerHost = mod_pubsub:host()
%% Opts = list()
%% @doc <p>Called during pubsub modules initialisation. Any pubsub plugin must
%% implement this function. It can return anything.</p>
%% <p>This function is mainly used to trigger the setup task necessary for the
%% plugin. It can be used for example by the developer to create the specific
%% module database schema if it does not exists yet.</p>
init(_Host, _ServerHost, _Opts) ->
pubsub_subscription_odbc:init(), ok.
%% @spec (Host, ServerHost) -> any()
%% Host = mod_pubsub:host()
%% ServerHost = host()
%% @doc <p>Called during pubsub modules termination. Any pubsub plugin must
%% implement this function. It can return anything.</p>
terminate(_Host, _ServerHost) -> ok.
%% @spec () -> [Option]
%% Option = mod_pubsub:nodeOption()
%% @doc Returns the default pubsub node options.
%% <p>Example of function return value:</p>
%% ```
%% [{deliver_payloads, true},
%% {notify_config, false},
%% {notify_delete, false},
%% {notify_retract, true},
%% {persist_items, true},
%% {max_items, 10},
%% {subscribe, true},
%% {access_model, open},
%% {publish_model, publishers},
%% {max_payload_size, 100000},
%% {send_last_published_item, never},
%% {presence_based_delivery, false}]'''
-spec(options/0 :: () -> NodeOptions::mod_pubsub:nodeOptions()).
options() ->
[{deliver_payloads, true}, {notify_config, false},
{notify_delete, false}, {notify_retract, true},
{purge_offline, false}, {persist_items, true},
{max_items, ?MAXITEMS}, {subscribe, true},
{access_model, open}, {roster_groups_allowed, []},
{publish_model, publishers},
{notification_type, headline},
{max_payload_size, ?MAX_PAYLOAD_SIZE},
{send_last_published_item, on_sub_and_presence},
{deliver_notifications, true},
{presence_based_delivery, false}, {odbc, true},
{rsm, true}].
%% @spec () -> []
%% @doc Returns the node features
-spec(features/0 :: () -> Features::[Feature::binary(),...]).
features() ->
[<<"create-nodes">>, <<"auto-create">>,
<<"access-authorize">>, <<"delete-nodes">>,
<<"delete-items">>, <<"get-pending">>,
<<"instant-nodes">>, <<"manage-subscriptions">>,
<<"modify-affiliations">>, <<"multi-subscribe">>,
<<"outcast-affiliation">>, <<"persistent-items">>,
<<"publish">>, <<"purge-nodes">>, <<"retract-items">>,
<<"retrieve-affiliations">>, <<"retrieve-items">>,
<<"retrieve-subscriptions">>, <<"subscribe">>,
<<"subscription-notifications">>,
<<"subscription-options">>, <<"rsm">>].
%% @spec (Host, ServerHost, Node, ParentNode, Owner, Access) -> bool()
%% Host = mod_pubsub:host()
%% ServerHost = mod_pubsub:host()
%% Node = mod_pubsub:pubsubNode()
%% ParentNode = mod_pubsub:pubsubNode()
%% Owner = mod_pubsub:jid()
%% Access = all | atom()
%% @doc Checks if the current user has the permission to create the requested node
%% <p>In {@link node_default}, the permission is decided by the place in the
%% hierarchy where the user is creating the node. The access parameter is also
%% checked in the default module. This parameter depends on the value of the
%% <tt>access_createnode</tt> ACL value in ejabberd config file.</p>
%% <p>This function also check that node can be created a a children of its
%% parent node</p>
%% <p>PubSub plugins can redefine the PubSub node creation rights as they
%% which. They can simply delegate this check to the {@link node_default}
%% module by implementing this function like this:
%% ```check_create_user_permission(Host, ServerHost, Node, ParentNode, Owner, Access) ->
%% node_default:check_create_user_permission(Host, ServerHost, Node, ParentNode, Owner, Access).'''</p>
-spec(create_node_permission/6 ::
(
Host :: mod_pubsub:host(),
ServerHost :: binary(),
Node :: mod_pubsub:nodeId(),
_ParentNode :: _,
Owner :: jid(),
Access :: atom())
-> {result, boolean()}
).
create_node_permission(Host, ServerHost, Node, _ParentNode, Owner, Access) ->
LOwner = jlib:jid_tolower(Owner),
{User, Server, _Resource} = LOwner,
Allowed = case LOwner of
{<<"">>, Host, <<"">>} ->
true; % pubsub service always allowed
_ ->
case acl:match_rule(ServerHost, Access, LOwner) of
allow ->
case node_to_path(Node) of
[<<"home">>, Server, User | _] -> true;
_ -> false
end;
_ -> false
end
end,
{result, Allowed}.
%% @spec (NodeId, Owner) ->
%% {result, Result} | exit
%% NodeId = mod_pubsub:pubsubNodeId()
%% Owner = mod_pubsub:jid()
%% @doc <p></p>
-spec(create_node/2 ::
(
NodeIdx :: mod_pubsub:nodeIdx(),
Owner :: jid())
-> {result, {default, broadcast}}
).
create_node(NodeIdx, Owner) ->
OwnerKey = jlib:jid_tolower(jlib:jid_remove_resource(Owner)),
State = #pubsub_state{stateid = {OwnerKey, NodeIdx}, affiliation = owner},
catch
ejabberd_odbc:sql_query_t([<<"insert into pubsub_state(nodeid, jid, "
"affiliation, subscriptions) values(">>,
state_to_raw(NodeIdx, State), <<");">>]),
{result, {default, broadcast}}.
%% @spec (Removed) -> ok
%% Removed = [mod_pubsub:pubsubNode()]
%% @doc <p>purge items of deleted nodes after effective deletion.</p>
-spec(delete_node/1 ::
(
Removed :: [mod_pubsub:pubsubNode(),...])
-> {result, {default, broadcast, _}}
).
delete_node(Removed) ->
Reply = lists:map(fun (#pubsub_node{id = NodeId} =
PubsubNode) ->
Subscriptions = case catch
ejabberd_odbc:sql_query_t([<<"select jid, subscriptions from pubsub_state "
"where nodeid='">>,
NodeId,
<<"';">>])
of
{selected,
[<<"jid">>,
<<"subscriptions">>],
RItems} ->
lists:map(fun ([SJID,
Subscriptions]) ->
{decode_jid(SJID),
decode_subscriptions(Subscriptions)}
end,
RItems);
_ -> []
end,
{PubsubNode, Subscriptions}
end,
Removed),
{result, {default, broadcast, Reply}}.
%% @spec (NodeId, Sender, Subscriber, AccessModel, SendLast, PresenceSubscription, RosterGroup, Options) ->
%% {error, Reason} | {result, Result}
%% @doc <p>Accepts or rejects subcription requests on a PubSub node.</p>
%% <p>The mechanism works as follow:
%% <ul>
%% <li>The main PubSub module prepares the subscription and passes the
%% result of the preparation as a record.</li>
%% <li>This function gets the prepared record and several other parameters and
%% can decide to:<ul>
%% <li>reject the subscription;</li>
%% <li>allow it as is, letting the main module perform the database
%% persistance;</li>
%% <li>allow it, modifying the record. The main module will store the
%% modified record;</li>
%% <li>allow it, but perform the needed persistance operations.</li></ul>
%% </li></ul></p>
%% <p>The selected behaviour depends on the return parameter:
%% <ul>
%% <li><tt>{error, Reason}</tt>: an IQ error result will be returned. No
%% subscription will actually be performed.</li>
%% <li><tt>true</tt>: Subscribe operation is allowed, based on the
%% unmodified record passed in parameter <tt>SubscribeResult</tt>. If this
%% parameter contains an error, no subscription will be performed.</li>
%% <li><tt>{true, PubsubState}</tt>: Subscribe operation is allowed, but
%% the {@link mod_pubsub:pubsubState()} record returned replaces the value
%% passed in parameter <tt>SubscribeResult</tt>.</li>
%% <li><tt>{true, done}</tt>: Subscribe operation is allowed, but the
%% {@link mod_pubsub:pubsubState()} will be considered as already stored and
%% no further persistance operation will be performed. This case is used,
%% when the plugin module is doing the persistance by itself or when it want
%% to completly disable persistance.</li></ul>
%% </p>
%% <p>In the default plugin module, the record is unchanged.</p>
-spec(subscribe_node/8 ::
(
NodeIdx :: mod_pubsub:nodeIdx(),
Sender :: jid(),
Subscriber :: ljid(),
AccessModel :: mod_pubsub:accessModel(),
SendLast :: 'never' | 'on_sub' | 'on_sub_and_presence',
PresenceSubscription :: boolean(),
RosterGroup :: boolean(),
Options :: mod_pubsub:subOptions())
-> {result, {default, subscribed, mod_pubsub:subId()}}
| {result, {default, subscribed, mod_pubsub:subId(), send_last}}
| {result, {default, pending, mod_pubsub:subId()}}
%%%
| {error, _}
| {error, _, binary()}
).
subscribe_node(NodeId, Sender, Subscriber, AccessModel,
SendLast, PresenceSubscription, RosterGroup, Options) ->
SubKey = jlib:jid_tolower(Subscriber),
GenKey = jlib:jid_remove_resource(SubKey),
Authorized =
jlib:jid_tolower(jlib:jid_remove_resource(Sender)) ==
GenKey,
{Affiliation, Subscriptions} =
select_affiliation_subscriptions(NodeId, GenKey,
SubKey),
Whitelisted = lists:member(Affiliation,
[member, publisher, owner]),
PendingSubscription = lists:any(fun ({pending, _}) ->
true;
(_) -> false
end,
Subscriptions),
if not Authorized ->
{error,
?ERR_EXTENDED((?ERR_BAD_REQUEST), <<"invalid-jid">>)};
Affiliation == outcast -> {error, ?ERR_FORBIDDEN};
PendingSubscription ->
{error,
?ERR_EXTENDED((?ERR_NOT_AUTHORIZED),
<<"pending-subscription">>)};
(AccessModel == presence) and
not PresenceSubscription ->
{error,
?ERR_EXTENDED((?ERR_NOT_AUTHORIZED),
<<"presence-subscription-required">>)};
(AccessModel == roster) and not RosterGroup ->
{error,
?ERR_EXTENDED((?ERR_NOT_AUTHORIZED),
<<"not-in-roster-group">>)};
(AccessModel == whitelist) and not Whitelisted ->
{error,
?ERR_EXTENDED((?ERR_NOT_ALLOWED), <<"closed-node">>)};
%%MustPay ->
%% % Payment is required for a subscription
%% {error, ?ERR_PAYMENT_REQUIRED};
%%ForbiddenAnonymous ->
%% % Requesting entity is anonymous
%% {error, ?ERR_FORBIDDEN};
true ->
{result, SubId} = pubsub_subscription_odbc:subscribe_node(Subscriber, NodeId, Options),
NewSub = case AccessModel of
authorize -> pending;
_ -> subscribed
end,
update_subscription(NodeId, SubKey,
[{NewSub, SubId} | Subscriptions]),
case {NewSub, SendLast} of
{subscribed, never} ->
{result, {default, subscribed, SubId}};
{subscribed, _} ->
{result, {default, subscribed, SubId, send_last}};
{_, _} -> {result, {default, pending, SubId}}
end
end.
%% @spec (NodeId, Sender, Subscriber, SubId) ->
%% {error, Reason} | {result, []}
%% NodeId = mod_pubsub:pubsubNodeId()
%% Sender = mod_pubsub:jid()
%% Subscriber = mod_pubsub:jid()
%% SubId = mod_pubsub:subid()
%% Reason = mod_pubsub:stanzaError()
%% @doc <p>Unsubscribe the <tt>Subscriber</tt> from the <tt>Node</tt>.</p>
-spec(unsubscribe_node/4 ::
(
NodeIdx :: mod_pubsub:nodeIdx(),
Sender :: jid(),
Subscriber :: jid(),
SubId :: subId())
-> {result, default}
%
| {error, _}
| {error, _, binary()}
).
unsubscribe_node(NodeId, Sender, Subscriber, SubId) ->
SubKey = jlib:jid_tolower(Subscriber),
GenKey = jlib:jid_remove_resource(SubKey),
Authorized =
jlib:jid_tolower(jlib:jid_remove_resource(Sender)) ==
GenKey,
{Affiliation, Subscriptions} =
select_affiliation_subscriptions(NodeId, SubKey),
SubIdExists = case SubId of
<<>> -> false;
List when is_binary(List) -> true;
_ -> false
end,
if
%% Requesting entity is prohibited from unsubscribing entity
not Authorized -> {error, ?ERR_FORBIDDEN};
%% Entity did not specify SubId
%%SubId == "", ?? ->
%% {error, ?ERR_EXTENDED(?ERR_BAD_REQUEST, "subid-required")};
%% Invalid subscription identifier
%%InvalidSubId ->
%% {error, ?ERR_EXTENDED(?ERR_NOT_ACCEPTABLE, "invalid-subid")};
%% Requesting entity is not a subscriber
Subscriptions == [] ->
{error,
?ERR_EXTENDED((?ERR_UNEXPECTED_REQUEST_CANCEL),
<<"not-subscribed">>)};
%% Subid supplied, so use that.
SubIdExists ->
Sub = first_in_list(fun (S) ->
case S of
{_Sub, SubId} -> true;
_ -> false
end
end,
Subscriptions),
case Sub of
{value, S} ->
delete_subscription(SubKey, NodeId, S, Affiliation,
Subscriptions),
{result, default};
false ->
{error,
?ERR_EXTENDED((?ERR_UNEXPECTED_REQUEST_CANCEL),
<<"not-subscribed">>)}
end;
%% Asking to remove all subscriptions to the given node
SubId == all ->
[delete_subscription(SubKey, NodeId, S, Affiliation,
Subscriptions)
|| S <- Subscriptions],
{result, default};
%% No subid supplied, but there's only one matching
%% subscription, so use that.
length(Subscriptions) == 1 ->
delete_subscription(SubKey, NodeId, hd(Subscriptions),
Affiliation, Subscriptions),
{result, default};
%% No subid and more than one possible subscription match.
true ->
{error,
?ERR_EXTENDED((?ERR_BAD_REQUEST), <<"subid-required">>)}
end.
%-spec(delete_subscriptions/5 ::
%(
% SubKey :: ljid(),
% NodeIdx :: mod_pubsub:nodeIdx(),
% _ :: {mod_pubsub:subscription(), mod_pubsub:subId()},
% SubState :: mod_pubsub:pubsubState(),
% Subscriptions :: [{mod_pubsub:subscription(), mod_pubsub:subId()}])
% -> ok
%).
delete_subscription(SubKey, NodeIdx,
{Subscription, SubId}, Affiliation, Subscriptions) ->
NewSubs = Subscriptions -- [{Subscription, SubId}],
pubsub_subscription_odbc:unsubscribe_node(SubKey, NodeIdx, SubId),
case {Affiliation, NewSubs} of
{none, []} -> del_state(NodeIdx, SubKey);
_ -> update_subscription(NodeIdx, SubKey, NewSubs)
end.
%% @spec (NodeId, Publisher, PublishModel, MaxItems, ItemId, Payload) ->
%% {true, PubsubItem} | {result, Reply}
%% NodeId = mod_pubsub:pubsubNodeId()
%% Publisher = mod_pubsub:jid()
%% PublishModel = atom()
%% MaxItems = integer()
%% ItemId = string()
%% Payload = term()
%% @doc <p>Publishes the item passed as parameter.</p>
%% <p>The mechanism works as follow:
%% <ul>
%% <li>The main PubSub module prepares the item to publish and passes the
%% result of the preparation as a {@link mod_pubsub:pubsubItem()} record.</li>
%% <li>This function gets the prepared record and several other parameters and can decide to:<ul>
%% <li>reject the publication;</li>
%% <li>allow the publication as is, letting the main module perform the database persistance;</li>
%% <li>allow the publication, modifying the record. The main module will store the modified record;</li>
%% <li>allow it, but perform the needed persistance operations.</li></ul>
%% </li></ul></p>
%% <p>The selected behaviour depends on the return parameter:
%% <ul>
%% <li><tt>{error, Reason}</tt>: an iq error result will be return. No
%% publication is actually performed.</li>
%% <li><tt>true</tt>: Publication operation is allowed, based on the
%% unmodified record passed in parameter <tt>Item</tt>. If the <tt>Item</tt>
%% parameter contains an error, no subscription will actually be
%% performed.</li>
%% <li><tt>{true, Item}</tt>: Publication operation is allowed, but the
%% {@link mod_pubsub:pubsubItem()} record returned replaces the value passed
%% in parameter <tt>Item</tt>. The persistance will be performed by the main
%% module.</li>
%% <li><tt>{true, done}</tt>: Publication operation is allowed, but the
%% {@link mod_pubsub:pubsubItem()} will be considered as already stored and
%% no further persistance operation will be performed. This case is used,
%% when the plugin module is doing the persistance by itself or when it want
%% to completly disable persistance.</li></ul>
%% </p>
%% <p>In the default plugin module, the record is unchanged.</p>
-spec(publish_item/6 ::
(
NodeIdx :: mod_pubsub:nodeIdx(),
Publisher :: jid(),
PublishModel :: mod_pubsub:publishModel(),
Max_Items :: non_neg_integer(),
ItemId :: <<>> | mod_pubsub:itemId(),
Payload :: mod_pubsub:payload())
-> {result, {default, broadcast, [mod_pubsub:itemId()]}}
%%%
| {error, _}
).
publish_item(NodeIdx, Publisher, PublishModel, MaxItems, ItemId, Payload) ->
SubKey = jlib:jid_tolower(Publisher),
GenKey = jlib:jid_remove_resource(SubKey),
{Affiliation, Subscriptions} =
select_affiliation_subscriptions(NodeIdx, GenKey, SubKey),
Subscribed = case PublishModel of
subscribers -> is_subscribed(Subscriptions);
_ -> undefined
end,
if not
((PublishModel == open) or
(PublishModel == publishers) and
((Affiliation == owner) or (Affiliation == publisher))
or (Subscribed == true)) ->
{error, ?ERR_FORBIDDEN};
true ->
if MaxItems > 0 ->
PubId = {now(), SubKey},
set_item(#pubsub_item{itemid = {ItemId, NodeIdx},
creation = {now(), GenKey},
modification = PubId,
payload = Payload}),
Items = [ItemId | itemids(NodeIdx, GenKey) -- [ItemId]],
{result, {_, OI}} = remove_extra_items(NodeIdx, MaxItems, Items),
{result, {default, broadcast, OI}};
true -> {result, {default, broadcast, []}}
end
end.
%% @spec (NodeId, MaxItems, ItemIds) -> {NewItemIds,OldItemIds}
%% NodeId = mod_pubsub:pubsubNodeId()
%% MaxItems = integer() | unlimited
%% ItemIds = [ItemId::string()]
%% NewItemIds = [ItemId::string()]
%% @doc <p>This function is used to remove extra items, most notably when the
%% maximum number of items has been reached.</p>
%% <p>This function is used internally by the core PubSub module, as no
%% permission check is performed.</p>
%% <p>In the default plugin module, the oldest items are removed, but other
%% rules can be used.</p>
%% <p>If another PubSub plugin wants to delegate the item removal (and if the
%% plugin is using the default pubsub storage), it can implements this function like this:
%% ```remove_extra_items(NodeId, MaxItems, ItemIds) ->
%% node_default:remove_extra_items(NodeId, MaxItems, ItemIds).'''</p>
remove_extra_items(_NodeId, unlimited, ItemIds) ->
{result, {ItemIds, []}};
remove_extra_items(NodeId, MaxItems, ItemIds) ->
NewItems = lists:sublist(ItemIds, MaxItems),
OldItems = lists:nthtail(length(NewItems), ItemIds),
del_items(NodeId, OldItems),
{result, {NewItems, OldItems}}.
%% @spec (NodeId, Publisher, PublishModel, ItemId) ->
%% {error, Reason::stanzaError()} |
%% {result, []}
%% NodeId = mod_pubsub:pubsubNodeId()
%% Publisher = mod_pubsub:jid()
%% PublishModel = atom()
%% ItemId = string()
%% @doc <p>Triggers item deletion.</p>
%% <p>Default plugin: The user performing the deletion must be the node owner
%% or a publisher.</p>
-spec(delete_item/4 ::
(
NodeIdx :: mod_pubsub:nodeIdx(),
Publisher :: jid(),
PublishModel :: mod_pubsub:publishModel(),
ItemId :: <<>> | mod_pubsub:itemId())
-> {result, {default, broadcast}}
%%%
| {error, _}
).
delete_item(NodeIdx, Publisher, PublishModel, ItemId) ->
SubKey = jlib:jid_tolower(Publisher),
GenKey = jlib:jid_remove_resource(SubKey),
{result, Affiliation} = get_affiliation(NodeIdx, GenKey),
Allowed = Affiliation == publisher orelse
Affiliation == owner orelse
PublishModel == open orelse
case get_item(NodeIdx, ItemId) of
{result, #pubsub_item{creation = {_, GenKey}}} -> true;
_ -> false
end,
if not Allowed -> {error, ?ERR_FORBIDDEN};
true ->
case del_item(NodeIdx, ItemId) of
{updated, 1} -> {result, {default, broadcast}};
_ -> {error, ?ERR_ITEM_NOT_FOUND}
end
end.
%% @spec (NodeId, Owner) ->
%% {error, Reason::stanzaError()} |
%% {result, {default, broadcast}}
%% NodeId = mod_pubsub:pubsubNodeId()
%% Owner = mod_pubsub:jid()
-spec(purge_node/2 ::
(
NodeIdx :: mod_pubsub:nodeIdx(),
Owner :: jid())
-> {result, {default, broadcast}}
| {error, _}
).
purge_node(NodeIdx, Owner) ->
SubKey = jlib:jid_tolower(Owner),
GenKey = jlib:jid_remove_resource(SubKey),
GenState = get_state(NodeIdx, GenKey),
case GenState of
#pubsub_state{affiliation = owner} ->
{result, States} = get_states(NodeIdx),
lists:foreach(fun (#pubsub_state{items = []}) -> ok;
(#pubsub_state{items = Items}) ->
del_items(NodeIdx, Items)
end,
States),
{result, {default, broadcast}};
_ -> {error, ?ERR_FORBIDDEN}
end.
%% @spec (Host, JID) -> [{Node,Affiliation}]
%% Host = host()
%% JID = mod_pubsub:jid()
%% @doc <p>Return the current affiliations for the given user</p>
%% <p>The default module reads affiliations in the main Mnesia
%% <tt>pubsub_state</tt> table. If a plugin stores its data in the same
%% table, it should return an empty list, as the affiliation will be read by
%% the default PubSub module. Otherwise, it should return its own affiliation,
%% that will be added to the affiliation stored in the main
%% <tt>pubsub_state</tt> table.</p>
-spec(get_entity_affiliations/2 ::
(
Host :: mod_pubsub:hostPubsub(),
Owner :: jid())
-> {result, [{mod_pubsub:pubsubNode(), mod_pubsub:affiliation()}]}
).
get_entity_affiliations(Host, Owner) ->
SubKey = jlib:jid_tolower(Owner),
GenKey = jlib:jid_remove_resource(SubKey),
H = (?PUBSUB):escape(Host),
J = encode_jid(GenKey),
Reply = case catch
ejabberd_odbc:sql_query_t([<<"select node, type, i.nodeid, affiliation "
"from pubsub_state i, pubsub_node n where "
"i.nodeid = n.nodeid and jid='">>,
J, <<"' and host='">>, H,
<<"';">>])
of
{selected,
[<<"node">>, <<"type">>, <<"nodeid">>,
<<"affiliation">>],
RItems} ->
lists:map(fun ([N, T, I, A]) ->
Node = nodetree_tree_odbc:raw_to_node(Host,
[N,
<<"">>,
T,
I]),
{Node, decode_affiliation(A)}
end,
RItems);
_ -> []
end,
{result, Reply}.
-spec(get_node_affiliations/1 ::
(
NodeIdx::mod_pubsub:nodeIdx())
-> {result, [{ljid(), mod_pubsub:affiliation()}]}
).
get_node_affiliations(NodeIdx) ->
Reply = case catch
ejabberd_odbc:sql_query_t([<<"select jid, affiliation from pubsub_state "
"where nodeid='">>,
NodeIdx, <<"';">>])
of
{selected, [<<"jid">>, <<"affiliation">>], RItems} ->
lists:map(fun ([J, A]) ->
{decode_jid(J), decode_affiliation(A)}
end,
RItems);
_ -> []
end,
{result, Reply}.
-spec(get_affiliation/2 ::
(
NodeIdx :: mod_pubsub:nodeIdx(),
Owner :: ljid())
-> {result, mod_pubsub:affiliation()}
).
get_affiliation(NodeIdx, Owner) ->
SubKey = jlib:jid_tolower(Owner),
GenKey = jlib:jid_remove_resource(SubKey),
J = encode_jid(GenKey),
Reply = case catch
ejabberd_odbc:sql_query_t([<<"select affiliation from pubsub_state "
"where nodeid='">>,
NodeIdx, <<"' and jid='">>, J,
<<"';">>])
of
{selected, [<<"affiliation">>], [[A]]} ->
decode_affiliation(A);
_ -> none
end,
{result, Reply}.
-spec(set_affiliation/3 ::
(
NodeIdx :: mod_pubsub:nodeIdx(),
Owner :: ljid(),
Affiliation :: mod_pubsub:affiliation())
-> ok
).
set_affiliation(NodeIdx, Owner, Affiliation) ->
SubKey = jlib:jid_tolower(Owner),
GenKey = jlib:jid_remove_resource(SubKey),
{_, Subscriptions} = select_affiliation_subscriptions(NodeIdx, GenKey),
case {Affiliation, Subscriptions} of
{none, none} -> del_state(NodeIdx, GenKey);
_ -> update_affiliation(NodeIdx, GenKey, Affiliation)
end.
%% @spec (Host, Owner) -> [{Node,Subscription}]
%% Host = host()
%% Owner = mod_pubsub:jid()
%% @doc <p>Return the current subscriptions for the given user</p>
%% <p>The default module reads subscriptions in the main Mnesia
%% <tt>pubsub_state</tt> table. If a plugin stores its data in the same
%% table, it should return an empty list, as the affiliation will be read by
%% the default PubSub module. Otherwise, it should return its own affiliation,
%% that will be added to the affiliation stored in the main
%% <tt>pubsub_state</tt> table.</p>
-spec(get_entity_subscriptions/2 ::
(
Host :: mod_pubsub:host(),
Owner :: jid())
-> {result,
[{mod_pubsub:pubsubNode(),
mod_pubsub:subscription(),
mod_pubsub:subId(),
ljid()}]
}
).
get_entity_subscriptions(Host, Owner) ->
SubKey = jlib:jid_tolower(Owner),
GenKey = jlib:jid_remove_resource(SubKey),
H = (?PUBSUB):escape(Host),
SJ = encode_jid(SubKey),
GJ = encode_jid(GenKey),
Query = case SubKey of
GenKey ->
[<<"select node, type, i.nodeid, jid, subscriptio"
"ns from pubsub_state i, pubsub_node "
"n where i.nodeid = n.nodeid and jid "
"like '">>,
GJ, <<"%' and host='">>, H, <<"';">>];
_ ->
[<<"select node, type, i.nodeid, jid, subscriptio"
"ns from pubsub_state i, pubsub_node "
"n where i.nodeid = n.nodeid and jid "
"in ('">>,
SJ, <<"', '">>, GJ, <<"') and host='">>, H, <<"';">>]
end,
Reply = case catch ejabberd_odbc:sql_query_t(Query) of
{selected,
[<<"node">>, <<"type">>, <<"nodeid">>, <<"jid">>,
<<"subscriptions">>],
RItems} ->
lists:foldl(fun ([N, T, I, J, S], Acc) ->
Node =
nodetree_tree_odbc:raw_to_node(Host,
[N,
<<"">>,
T,
I]),
Jid = decode_jid(J),
case decode_subscriptions(S) of
[] -> [{Node, none, Jid} | Acc];
Subs ->
lists:foldl(fun ({Sub, SubId},
Acc2) ->
[{Node, Sub,
SubId, Jid}
| Acc2];
(Sub, Acc2) ->
[{Node, Sub,
Jid}
| Acc2]
end,
Acc, Subs)
end
end,
[], RItems);
_ -> []
end,
{result, Reply}.
%% do the same as get_entity_subscriptions but filter result only to
%% nodes having send_last_published_item=on_sub_and_presence
%% as this call avoid seeking node, it must return node and type as well
-spec(get_entity_subscriptions_for_send_last/2 ::
(
Host :: mod_pubsub:hostPubsub(),
Owner :: jid())
-> {result,
[{mod_pubsub:pubsubNode(),
mod_pubsub:subscription(),
mod_pubsub:subId(),
ljid()}]
}
).
get_entity_subscriptions_for_send_last(Host, Owner) ->
SubKey = jlib:jid_tolower(Owner),
GenKey = jlib:jid_remove_resource(SubKey),
H = (?PUBSUB):escape(Host),
SJ = encode_jid(SubKey),
GJ = encode_jid(GenKey),
Query = case SubKey of
GenKey ->
[<<"select node, type, i.nodeid, jid, subscriptio"
"ns from pubsub_state i, pubsub_node "
"n, pubsub_node_option o where i.nodeid "
"= n.nodeid and n.nodeid = o.nodeid and "
"name='send_last_published_item' and "
"val='on_sub_and_presence' and jid like "
"'">>,
GJ, <<"%' and host='">>, H, <<"';">>];
_ ->
[<<"select node, type, i.nodeid, jid, subscriptio"
"ns from pubsub_state i, pubsub_node "
"n, pubsub_node_option o where i.nodeid "
"= n.nodeid and n.nodeid = o.nodeid and "
"name='send_last_published_item' and "
"val='on_sub_and_presence' and jid in "
"('">>,
SJ, <<"', '">>, GJ, <<"') and host='">>, H, <<"';">>]
end,
Reply = case catch ejabberd_odbc:sql_query_t(Query) of
{selected,
[<<"node">>, <<"type">>, <<"nodeid">>, <<"jid">>,
<<"subscriptions">>],
RItems} ->
lists:foldl(fun ([N, T, I, J, S], Acc) ->
Node =
nodetree_tree_odbc:raw_to_node(Host,
[N,
<<"">>,
T,
I]),
Jid = decode_jid(J),
case decode_subscriptions(S) of
[] -> [{Node, none, Jid} | Acc];
Subs ->
lists:foldl(fun ({Sub, SubId}, Acc2) ->
[{Node, Sub, SubId, Jid}| Acc2]
end,
Acc, Subs)
end
end,
[], RItems);
_ -> []
end,
{result, Reply}.
-spec(get_node_subscriptions/1 ::
(
NodeIdx::mod_pubsub:nodeIdx())
-> {result, [{ljid(), mod_pubsub:subscription(), mod_pubsub:subId()}]}
).
get_node_subscriptions(NodeIdx) ->
Reply = case catch
ejabberd_odbc:sql_query_t([<<"select jid, subscriptions from pubsub_state "
"where nodeid='">>,
NodeIdx, <<"';">>])
of
{selected, [<<"jid">>, <<"subscriptions">>], RItems} ->
lists:foldl(fun ([J, S], Acc) ->
Jid = decode_jid(J),
case decode_subscriptions(S) of
[] -> [{Jid, none} | Acc];
Subs ->
lists:foldl(fun ({Sub, SubId}, Acc2) ->
[{Jid, Sub, SubId} | Acc2]
end,
Acc, Subs)
end
end,
[], RItems);
_ -> []
end,
{result, Reply}.
-spec(get_subscriptions/2 ::
(
NodeIdx :: mod_pubsub:nodeIdx(),
Owner :: ljid())
-> {result, [{mod_pubsub:subscription(), mod_pubsub:subId()}]}
).
get_subscriptions(NodeIdx, Owner) ->
SubKey = jlib:jid_tolower(Owner),
J = encode_jid(SubKey),
Reply = case catch
ejabberd_odbc:sql_query_t([<<"select subscriptions from pubsub_state "
"where nodeid='">>,
NodeIdx, <<"' and jid='">>, J,
<<"';">>])
of
{selected, [<<"subscriptions">>], [[S]]} ->
decode_subscriptions(S);
_ -> []
end,
{result, Reply}.
-spec(set_subscriptions/4 ::
(
NodeIdx :: mod_pubsub:nodeIdx(),
Owner :: jid(),
Subscription :: mod_pubsub:subscription(),
SubId :: mod_pubsub:subId())
-> _
%%%
| {error, xmlel()}
).
set_subscriptions(NodeIdx, Owner, Subscription, SubId) ->
SubKey = jlib:jid_tolower(Owner),
SubState = get_state_without_itemids(NodeIdx, SubKey),
case {SubId, SubState#pubsub_state.subscriptions} of
{_, []} ->
case Subscription of
none ->
{error,
?ERR_EXTENDED((?ERR_BAD_REQUEST),
<<"not-subscribed">>)};
_ ->
new_subscription(NodeIdx, Owner, Subscription, SubState)
end;
{<<"">>, [{_, SID}]} ->
case Subscription of
none -> unsub_with_subid(NodeIdx, SID, SubState);
_ -> replace_subscription({Subscription, SID}, SubState)
end;
{<<"">>, [_ | _]} ->
{error,
?ERR_EXTENDED((?ERR_BAD_REQUEST),
<<"subid-required">>)};
_ ->
case Subscription of
none -> unsub_with_subid(NodeIdx, SubId, SubState);
_ ->
replace_subscription({Subscription, SubId}, SubState)
end
end.
-spec(replace_subscription/2 ::
(
NewSub :: {mod_pubsub:subscription(), mod_pubsub:subId()},
SubState :: mod_pubsub:pubsubState())
-> {result, []}
).
replace_subscription(NewSub, SubState) ->
NewSubs = replace_subscription(NewSub, SubState#pubsub_state.subscriptions, []),
set_state(SubState#pubsub_state{subscriptions = NewSubs}).
replace_subscription(_, [], Acc) -> Acc;
replace_subscription({Sub, SubId}, [{_, SubID} | T], Acc) ->
replace_subscription({Sub, SubId}, T, [{Sub, SubID} | Acc]).
-spec(new_subscription/4 ::
(
NodeIdx :: mod_pubsub:nodeIdx(),
Owner :: jid(),
Subscription :: mod_pubsub:subscription(),
SubState :: mod_pubsub:pubsubState())
-> {mod_pubsub:subscription(), mod_pubsub:subId()}
%%%
| {error, xmlel()}
).
new_subscription(NodeIdx, Owner, Subscription, SubState) ->
case pubsub_subscription_odbc:subscribe_node(Owner, NodeIdx, []) of
{result, SubId} ->
Subscriptions = SubState#pubsub_state.subscriptions,
set_state(SubState#pubsub_state{subscriptions =
[{Subscription, SubId} | Subscriptions]}),
{Subscription, SubId};
_ -> {error, ?ERR_INTERNAL_SERVER_ERROR}
end.
-spec(unsub_with_subid/3 ::
(
NodeIdx :: mod_pubsub:nodeIdx(),
SubId :: mod_pubsub:subId(),
SubState :: mod_pubsub:pubsubState())
-> ok
).
unsub_with_subid(NodeIdx, SubId, SubState) ->
pubsub_subscription_odbc:unsubscribe_node(SubState#pubsub_state.stateid,
NodeIdx, SubId),
NewSubs = lists:filter(fun ({_, SID}) -> SubId =/= SID
end,
SubState#pubsub_state.subscriptions),
case {NewSubs, SubState#pubsub_state.affiliation} of
{[], none} ->
del_state(NodeIdx,
element(1, SubState#pubsub_state.stateid));
_ ->
set_state(SubState#pubsub_state{subscriptions = NewSubs})
end.
%% @spec (Host, Owner) -> {result, [Node]} | {error, Reason}
%% Host = host()
%% Owner = jid()
%% Node = pubsubNode()
%% @doc <p>Returns a list of Owner's nodes on Host with pending
%% subscriptions.</p>
-spec(get_pending_nodes/2 ::
(
Host :: mod_pubsub:hostPubsub(),
Owner :: jid())
-> {result, [mod_pubsub:nodeId()]}
).
get_pending_nodes(Host, Owner) ->
GenKey = jlib:jid_remove_resource(jlib:jid_tolower(Owner)),
States = mnesia:match_object(#pubsub_state{stateid =
{GenKey, '_'},
affiliation = owner, _ = '_'}),
NodeIDs = [ID
|| #pubsub_state{stateid = {_, ID}} <- States],
NodeTree = case catch
ets:lookup(gen_mod:get_module_proc(Host, config),
nodetree)
of
[{nodetree, N}] -> N;
_ -> nodetree_tree_odbc
end,
Reply = mnesia:foldl(fun (#pubsub_state{stateid =
{_, NID}} =
S,
Acc) ->
case lists:member(NID, NodeIDs) of
true ->
case get_nodes_helper(NodeTree, S) of
{value, Node} -> [Node | Acc];
false -> Acc
end;
false -> Acc
end
end,
[], pubsub_state),
{result, Reply}.
get_nodes_helper(NodeTree,
#pubsub_state{stateid = {_, N},
subscriptions = Subs}) ->
HasPending = fun ({pending, _}) -> true;
(pending) -> true;
(_) -> false
end,
case lists:any(HasPending, Subs) of
true ->
case NodeTree:get_node(N) of
#pubsub_node{nodeid = {_, Node}} -> {value, Node};
_ -> false
end;
false -> false
end.
%% @spec (NodeId) -> [States] | []
%% NodeId = mod_pubsub:pubsubNodeId()
%% @doc Returns the list of stored states for a given node.
%% <p>For the default PubSub module, states are stored in Mnesia database.</p>
%% <p>We can consider that the pubsub_state table have been created by the main
%% mod_pubsub module.</p>
%% <p>PubSub plugins can store the states where they wants (for example in a
%% relational database).</p>
%% <p>If a PubSub plugin wants to delegate the states storage to the default node,
%% they can implement this function like this:
%% ```get_states(NodeId) ->
%% node_default:get_states(NodeId).'''</p>
-spec(get_states/1 ::
(
NodeIdx::mod_pubsub:nodeIdx())
-> {result, [mod_pubsub:pubsubState()]}
).
get_states(NodeIdx) ->
case catch
ejabberd_odbc:sql_query_t([<<"select jid, affiliation, subscriptions "
"from pubsub_state where nodeid='">>,
NodeIdx, <<"';">>])
of
{selected,
[<<"jid">>, <<"affiliation">>, <<"subscriptions">>],
RItems} ->
{result,
lists:map(fun ([SJID, Affiliation, Subscriptions]) ->
#pubsub_state{stateid = {decode_jid(SJID), NodeIdx},
items = itemids(NodeIdx, SJID),
affiliation = decode_affiliation(Affiliation),
subscriptions = decode_subscriptions(Subscriptions)}
end,
RItems)};
_ -> {result, []}
end.
%% @spec (NodeId, JID) -> [State] | []
%% NodeId = mod_pubsub:pubsubNodeId()
%% JID = mod_pubsub:jid()
%% State = mod_pubsub:pubsubItems()
%% @doc <p>Returns a state (one state list), given its reference.</p>
-spec(get_state/2 ::
(
NodeIdx :: mod_pubsub:nodeIdx(),
JID :: ljid())
-> mod_pubsub:pubsubState()
).
get_state(NodeIdx, JID) ->
State = get_state_without_itemids(NodeIdx, JID),
{SJID, _} = State#pubsub_state.stateid,
State#pubsub_state{items = itemids(NodeIdx, SJID)}.
-spec(get_state_without_itemids/2 ::
(
NodeIdx :: mod_pubsub:nodeIdx(),
JID :: jid())
-> mod_pubsub:pubsubState()
).
get_state_without_itemids(NodeIdx, JID) ->
J = encode_jid(JID),
case catch
ejabberd_odbc:sql_query_t([<<"select jid, affiliation, subscriptions "
"from pubsub_state where jid='">>,
J, <<"' and nodeid='">>, NodeIdx,
<<"';">>])
of
{selected,
[<<"jid">>, <<"affiliation">>, <<"subscriptions">>],
[[SJID, Affiliation, Subscriptions]]} ->
#pubsub_state{stateid = {decode_jid(SJID), NodeIdx},
affiliation = decode_affiliation(Affiliation),
subscriptions = decode_subscriptions(Subscriptions)};
_ -> #pubsub_state{stateid = {JID, NodeIdx}}
end.
%% @spec (State) -> ok | {error, Reason::stanzaError()}
%% State = mod_pubsub:pubsubStates()
%% @doc <p>Write a state into database.</p>
-spec(set_state/1 ::
(
State :: mod_pubsub:pubsubState())
-> {result, []}
).
set_state(State) ->
{_, NodeIdx} = State#pubsub_state.stateid,
set_state(NodeIdx, State).
-spec(set_state/2 ::
(
NodeIdx :: mod_pubsub:nodeIdx(),
State :: mod_pubsub:pubsubState())
-> {result, []}
).
set_state(NodeIdx, State) ->
{JID, _} = State#pubsub_state.stateid,
J = encode_jid(JID),
S = encode_subscriptions(State#pubsub_state.subscriptions),
A = encode_affiliation(State#pubsub_state.affiliation),
case catch
ejabberd_odbc:sql_query_t([<<"update pubsub_state set subscriptions='">>,
S, <<"', affiliation='">>, A,
<<"' where nodeid='">>, NodeIdx,
<<"' and jid='">>, J, <<"';">>])
of
{updated, 1} -> ok;
_ ->
catch
ejabberd_odbc:sql_query_t([<<"insert into pubsub_state(nodeid, jid, "
"affiliation, subscriptions) values('">>,
NodeIdx, <<"', '">>, J, <<"', '">>, A,
<<"', '">>, S, <<"');">>])
end,
{result, []}.
%% @spec (NodeId, JID) -> ok | {error, Reason::stanzaError()}
%% NodeId = mod_pubsub:pubsubNodeId()
%% JID = mod_pubsub:jid()
%% @doc <p>Delete a state from database.</p>
del_state(NodeId, JID) ->
J = encode_jid(JID),
catch
ejabberd_odbc:sql_query_t([<<"delete from pubsub_state where jid='">>,
J, <<"' and nodeid='">>, NodeId, <<"';">>]),
ok.
%% @spec (NodeId, From) -> {[Items],RsmOut} | []
%% NodeId = mod_pubsub:pubsubNodeId()
%% Items = mod_pubsub:pubsubItems()
%% @doc Returns the list of stored items for a given node.
%% <p>For the default PubSub module, items are stored in Mnesia database.</p>
%% <p>We can consider that the pubsub_item table have been created by the main
%% mod_pubsub module.</p>
%% <p>PubSub plugins can store the items where they wants (for example in a
%% relational database), or they can even decide not to persist any items.</p>
%% <p>If a PubSub plugin wants to delegate the item storage to the default node,
%% they can implement this function like this:
%% ```get_items(NodeId, From) ->
%% node_default:get_items(NodeId, From).'''</p>
get_items(NodeId, _From) ->
case catch
ejabberd_odbc:sql_query_t([<<"select itemid, publisher, creation, "
"modification, payload from pubsub_item "
"where nodeid='">>,
NodeId,
<<"' order by modification desc;">>])
of
{selected,
[<<"itemid">>, <<"publisher">>, <<"creation">>,
<<"modification">>, <<"payload">>],
RItems} ->
{result,
lists:map(fun (RItem) -> raw_to_item(NodeId, RItem) end,
RItems)};
_ -> {result, []}
end.
get_items(NodeId, From, none) ->
MaxItems = case catch
ejabberd_odbc:sql_query_t([<<"select val from pubsub_node_option where "
"nodeid='">>,
NodeId,
<<"' and name='max_items';">>])
of
{selected, [<<"val">>], [[Value]]} ->
Tokens = element(2,
erl_scan:string(binary_to_list(<<Value/binary, ".">>))),
element(2, erl_parse:parse_term(Tokens));
_ -> ?MAXITEMS
end,
get_items(NodeId, From, #rsm_in{max = MaxItems});
get_items(NodeId, _From,
#rsm_in{max = M, direction = Direction, id = I,
index = IncIndex}) ->
Max = (?PUBSUB):escape(jlib:i2l(M)),
{Way, Order} = case Direction of
aft -> {<<"<">>, <<"desc">>};
before when I == <<>> -> {<<"is not">>, <<"asc">>};
before -> {<<">">>, <<"asc">>};
_ when IncIndex =/= undefined ->
{<<"<">>, <<"desc">>}; % using index
_ -> {<<"is not">>, <<"desc">>}% Can be better
end,
[AttrName, Id] = case I of
undefined when IncIndex =/= undefined ->
case catch
ejabberd_odbc:sql_query_t([<<"select modification from pubsub_item "
"pi where exists ( select count(*) as "
"count1 from pubsub_item where nodeid='">>,
NodeId,
<<"' and modification > pi.modification "
"having count1 = ">>,
(?PUBSUB):escape(jlib:i2l(IncIndex)),
<<" );">>])
of
{selected, [_], [[O]]} ->
[<<"modification">>, <<"'", O/binary, "'">>];
_ -> [<<"modification">>, <<"null">>]
end;
undefined -> [<<"modification">>, <<"null">>];
<<>> -> [<<"modification">>, <<"null">>];
I ->
[A, B] = str:tokens((?PUBSUB):escape(jlib:i2l(I)),
<<"@">>),
[A, <<"'", B/binary, "'">>]
end,
Count = case catch
ejabberd_odbc:sql_query_t([<<"select count(*) from pubsub_item where "
"nodeid='">>,
NodeId, <<"';">>])
of
{selected, [_], [[C]]} -> C;
_ -> <<"0">>
end,
case catch
ejabberd_odbc:sql_query_t([<<"select itemid, publisher, creation, "
"modification, payload from pubsub_item "
"where nodeid='">>,
NodeId, <<"' and ">>, AttrName, <<" ">>,
Way, <<" ">>, Id, <<" order by ">>,
AttrName, <<" ">>, Order, <<" limit ">>,
jlib:i2l(Max), <<" ;">>])
of
{selected,
[<<"itemid">>, <<"publisher">>, <<"creation">>,
<<"modification">>, <<"payload">>],
RItems} ->
case RItems of
[[_, _, _, F, _]|_] ->
Index = case catch
ejabberd_odbc:sql_query_t([<<"select count(*) from pubsub_item where "
"nodeid='">>,
NodeId, <<"' and ">>,
AttrName, <<" > '">>,
F, <<"';">>])
of
%{selected, [_], [{C}, {In}]} -> [string:strip(C, both, $"), string:strip(In, both, $")];
{selected, [_], [[In]]} -> In;
_ -> <<"0">>
end,
[_, _, _, L, _] = lists:last(RItems),
RsmOut = #rsm_out{count = Count, index = Index,
first = <<"modification@", F/binary>>,
last = <<"modification@", (jlib:i2l(L))/binary>>},
{result, {[raw_to_item(NodeId, RItem) || RItem <- RItems], RsmOut}};
0 -> {result, {[], #rsm_out{count = Count}}}
end;
_ -> {result, {[], none}}
end.
get_items(NodeId, JID, AccessModel,
PresenceSubscription, RosterGroup, SubId) ->
get_items(NodeId, JID, AccessModel,
PresenceSubscription, RosterGroup, SubId, none).
get_items(NodeId, JID, AccessModel,
PresenceSubscription, RosterGroup, _SubId, RSM) ->
SubKey = jlib:jid_tolower(JID),
GenKey = jlib:jid_remove_resource(SubKey),
{Affiliation, Subscriptions} =
select_affiliation_subscriptions(NodeId, GenKey,
SubKey),
Whitelisted = can_fetch_item(Affiliation,
Subscriptions),
if %%SubId == "", ?? ->
%% Entity has multiple subscriptions to the node but does not specify a subscription ID
%{error, ?ERR_EXTENDED(?ERR_BAD_REQUEST, "subid-required")};
%%InvalidSubId ->
%% Entity is subscribed but specifies an invalid subscription ID
%{error, ?ERR_EXTENDED(?ERR_NOT_ACCEPTABLE, "invalid-subid")};
Affiliation == outcast -> {error, ?ERR_FORBIDDEN};
(AccessModel == presence) and
not PresenceSubscription ->
{error,
?ERR_EXTENDED((?ERR_NOT_AUTHORIZED),
<<"presence-subscription-required">>)};
(AccessModel == roster) and not RosterGroup ->
{error,
?ERR_EXTENDED((?ERR_NOT_AUTHORIZED),
<<"not-in-roster-group">>)};
(AccessModel == whitelist) and not Whitelisted ->
{error,
?ERR_EXTENDED((?ERR_NOT_ALLOWED), <<"closed-node">>)};
(AccessModel == authorize) and not Whitelisted ->
{error, ?ERR_FORBIDDEN};
%%MustPay ->
%% % Payment is required for a subscription
%% {error, ?ERR_PAYMENT_REQUIRED};
true -> get_items(NodeId, JID, RSM)
end.
get_last_items(NodeId, _From, Count) ->
case catch
ejabberd_odbc:sql_query_t([<<"select itemid, publisher, creation, "
"modification, payload from pubsub_item "
"where nodeid='">>,
NodeId,
<<"' order by modification desc limit ">>,
jlib:i2l(Count), <<";">>])
of
{selected,
[<<"itemid">>, <<"publisher">>, <<"creation">>,
<<"modification">>, <<"payload">>],
RItems} ->
{result,
lists:map(fun (RItem) -> raw_to_item(NodeId, RItem) end,
RItems)};
_ -> {result, []}
end.
%% @spec (NodeId, ItemId) -> [Item] | []
%% NodeId = mod_pubsub:pubsubNodeId()
%% ItemId = string()
%% Item = mod_pubsub:pubsubItems()
%% @doc <p>Returns an item (one item list), given its reference.</p>
get_item(NodeId, ItemId) ->
I = (?PUBSUB):escape(ItemId),
case catch
ejabberd_odbc:sql_query_t([<<"select itemid, publisher, creation, "
"modification, payload from pubsub_item "
"where nodeid='">>,
NodeId, <<"' and itemid='">>, I,
<<"';">>])
of
{selected,
[<<"itemid">>, <<"publisher">>, <<"creation">>,
<<"modification">>, <<"payload">>],
[RItem]} ->
{result, raw_to_item(NodeId, RItem)};
_ -> {error, ?ERR_ITEM_NOT_FOUND}
end.
get_item(NodeId, ItemId, JID, AccessModel,
PresenceSubscription, RosterGroup, _SubId) ->
SubKey = jlib:jid_tolower(JID),
GenKey = jlib:jid_remove_resource(SubKey),
{Affiliation, Subscriptions} =
select_affiliation_subscriptions(NodeId, GenKey,
SubKey),
Whitelisted = can_fetch_item(Affiliation,
Subscriptions),
if %%SubId == "", ?? ->
%% Entity has multiple subscriptions to the node but does not specify a subscription ID
%{error, ?ERR_EXTENDED(?ERR_BAD_REQUEST, "subid-required")};
%%InvalidSubId ->
%% Entity is subscribed but specifies an invalid subscription ID
%{error, ?ERR_EXTENDED(?ERR_NOT_ACCEPTABLE, "invalid-subid")};
Affiliation == outcast -> {error, ?ERR_FORBIDDEN};
(AccessModel == presence) and
not PresenceSubscription ->
{error,
?ERR_EXTENDED((?ERR_NOT_AUTHORIZED),
<<"presence-subscription-required">>)};
(AccessModel == roster) and not RosterGroup ->
{error,
?ERR_EXTENDED((?ERR_NOT_AUTHORIZED),
<<"not-in-roster-group">>)};
(AccessModel == whitelist) and not Whitelisted ->
{error,
?ERR_EXTENDED((?ERR_NOT_ALLOWED), <<"closed-node">>)};
(AccessModel == authorize) and not Whitelisted ->
{error, ?ERR_FORBIDDEN};
%%MustPay ->
%% % Payment is required for a subscription
%% {error, ?ERR_PAYMENT_REQUIRED};
true -> get_item(NodeId, ItemId)
end.
%% @spec (Item) -> ok | {error, Reason::stanzaError()}
%% Item = mod_pubsub:pubsubItems()
%% @doc <p>Write an item into database.</p>
set_item(Item) ->
{ItemId, NodeId} = Item#pubsub_item.itemid,
I = (?PUBSUB):escape(ItemId),
{C, _} = Item#pubsub_item.creation,
{M, JID} = Item#pubsub_item.modification,
P = encode_jid(JID),
Payload = Item#pubsub_item.payload,
XML = (?PUBSUB):escape(str:join([xml:element_to_binary(X) || X<-Payload], <<>>)),
S = fun ({T1, T2, T3}) ->
str:join([jlib:i2l(T1, 6), jlib:i2l(T2, 6), jlib:i2l(T3, 6)], <<":">>)
end,
case catch
ejabberd_odbc:sql_query_t([<<"update pubsub_item set publisher='">>,
P, <<"', modification='">>, S(M),
<<"', payload='">>, XML,
<<"' where nodeid='">>, NodeId,
<<"' and itemid='">>, I, <<"';">>])
of
{updated, 1} -> ok;
_ ->
catch
ejabberd_odbc:sql_query_t([<<"insert into pubsub_item (nodeid, itemid, "
"publisher, creation, modification, payload) "
"values('">>,
NodeId, <<"', '">>, I, <<"', '">>, P,
<<"', '">>, S(C), <<"', '">>, S(M),
<<"', '">>, XML, <<"');">>])
end,
{result, []}.
%% @spec (NodeId, ItemId) -> ok | {error, Reason::stanzaError()}
%% NodeId = mod_pubsub:pubsubNodeId()
%% ItemId = string()
%% @doc <p>Delete an item from database.</p>
del_item(NodeId, ItemId) ->
I = (?PUBSUB):escape(ItemId),
catch
ejabberd_odbc:sql_query_t([<<"delete from pubsub_item where itemid='">>,
I, <<"' and nodeid='">>, NodeId, <<"';">>]).
del_items(_, []) -> ok;
del_items(NodeId, [ItemId]) -> del_item(NodeId, ItemId);
del_items(NodeId, ItemIds) ->
I = str:join([[<<"'">>, (?PUBSUB):escape(X), <<"'">>]
|| X <- ItemIds],
<<",">>),
catch
ejabberd_odbc:sql_query_t([<<"delete from pubsub_item where itemid "
"in (">>,
I, <<") and nodeid='">>, NodeId, <<"';">>]).
get_item_name(_Host, _Node, Id) -> Id.
node_to_path(Node) -> str:tokens((Node), <<"/">>).
path_to_node([]) -> <<>>;
path_to_node(Path) ->
iolist_to_binary(str:join([<<"">> | Path], <<"/">>)).
%% @spec (Affiliation, Subscription) -> true | false
%% Affiliation = owner | member | publisher | outcast | none
%% Subscription = subscribed | none
%% @doc Determines if the combination of Affiliation and Subscribed
%% are allowed to get items from a node.
can_fetch_item(owner, _) -> true;
can_fetch_item(member, _) -> true;
can_fetch_item(publisher, _) -> true;
can_fetch_item(outcast, _) -> false;
can_fetch_item(none, Subscriptions) -> is_subscribed(Subscriptions).
is_subscribed(Subscriptions) ->
lists:any(fun ({subscribed, _SubId}) -> true;
(_) -> false
end,
Subscriptions).
%% Returns the first item where Pred() is true in List
first_in_list(_Pred, []) -> false;
first_in_list(Pred, [H | T]) ->
case Pred(H) of
true -> {value, H};
_ -> first_in_list(Pred, T)
end.
itemids(NodeId, {U, S, R}) ->
itemids(NodeId, encode_jid({U, S, R}));
itemids(NodeId, SJID) ->
case catch
ejabberd_odbc:sql_query_t([<<"select itemid from pubsub_item where "
"nodeid='">>,
NodeId, <<"' and publisher like '">>,
SJID,
<<"%' order by modification desc;">>])
of
{selected, [<<"itemid">>], RItems} ->
lists:map(fun ([ItemId]) -> ItemId end, RItems);
_ -> []
end.
select_affiliation_subscriptions(NodeId, JID) ->
J = encode_jid(JID),
case catch
ejabberd_odbc:sql_query_t([<<"select affiliation,subscriptions from "
"pubsub_state where nodeid='">>,
NodeId, <<"' and jid='">>, J, <<"';">>])
of
{selected, [<<"affiliation">>, <<"subscriptions">>],
[[A, S]]} ->
{decode_affiliation(A), decode_subscriptions(S)};
_ -> {none, []}
end.
select_affiliation_subscriptions(NodeId, JID, JID) ->
select_affiliation_subscriptions(NodeId, JID);
select_affiliation_subscriptions(NodeId, GenKey,
SubKey) ->
{result, Affiliation} = get_affiliation(NodeId, GenKey),
{result, Subscriptions} = get_subscriptions(NodeId,
SubKey),
{Affiliation, Subscriptions}.
update_affiliation(NodeId, JID, Affiliation) ->
J = encode_jid(JID),
A = encode_affiliation(Affiliation),
case catch
ejabberd_odbc:sql_query_t([<<"update pubsub_state set affiliation='">>,
A, <<"' where nodeid='">>, NodeId,
<<"' and jid='">>, J, <<"';">>])
of
{updated, 1} -> ok;
_ ->
catch
ejabberd_odbc:sql_query_t([<<"insert into pubsub_state(nodeid, jid, "
"affiliation, subscriptions) values('">>,
NodeId, <<"', '">>, J, <<"', '">>, A,
<<"', '');">>])
end.
update_subscription(NodeId, JID, Subscription) ->
J = encode_jid(JID),
S = encode_subscriptions(Subscription),
case catch
ejabberd_odbc:sql_query_t([<<"update pubsub_state set subscriptions='">>,
S, <<"' where nodeid='">>, NodeId,
<<"' and jid='">>, J, <<"';">>])
of
{updated, 1} -> ok;
_ ->
catch
ejabberd_odbc:sql_query_t([<<"insert into pubsub_state(nodeid, jid, "
"affiliation, subscriptions) values('">>,
NodeId, <<"', '">>, J, <<"', 'n', '">>,
S, <<"');">>])
end.
decode_jid(JID) ->
jlib:jid_tolower(jlib:string_to_jid(JID)).
decode_affiliation(<<"o">>) -> owner;
decode_affiliation(<<"p">>) -> publisher;
decode_affiliation(<<"m">>) -> member;
decode_affiliation(<<"c">>) -> outcast;
decode_affiliation(_) -> none.
decode_subscription(<<"s">>) -> subscribed;
decode_subscription(<<"p">>) -> pending;
decode_subscription(<<"u">>) -> unconfigured;
decode_subscription(_) -> none.
decode_subscriptions(Subscriptions) ->
lists:foldl(fun (Subscription, Acc) ->
case str:tokens(Subscription, <<":">>) of
[S, SubId] -> [{decode_subscription(S), SubId} | Acc];
_ -> Acc
end
end,
[], str:tokens(Subscriptions, <<",">>)).
encode_jid(JID) ->
(?PUBSUB):escape(JID).
encode_affiliation(owner) -> <<"o">>;
encode_affiliation(publisher) -> <<"p">>;
encode_affiliation(member) -> <<"m">>;
encode_affiliation(outcast) -> <<"c">>;
encode_affiliation(_) -> <<"n">>.
encode_subscription(subscribed) -> <<"s">>;
encode_subscription(pending) -> <<"p">>;
encode_subscription(unconfigured) -> <<"u">>;
encode_subscription(_) -> <<"n">>.
encode_subscriptions(Subscriptions) ->
str:join(lists:map(fun ({S, SubId}) ->
<<(encode_subscription(S))/binary, ":",
SubId/binary>>
end,
Subscriptions),
<<",">>).
%%% record getter/setter
state_to_raw(NodeId, State) ->
{JID, _} = State#pubsub_state.stateid,
J = encode_jid(JID),
A = encode_affiliation(State#pubsub_state.affiliation),
S =
encode_subscriptions(State#pubsub_state.subscriptions),
[<<"'">>, NodeId, <<"', '">>, J, <<"', '">>, A,
<<"', '">>, S, <<"'">>].
raw_to_item(NodeId,
[ItemId, SJID, Creation, Modification, XML]) ->
JID = decode_jid(SJID),
ToTime = fun (Str) ->
[T1, T2, T3] = str:tokens(Str, <<":">>),
{jlib:l2i(T1), jlib:l2i(T2), jlib:l2i(T3)}
end,
Payload = case xml_stream:parse_element(XML) of
{error, _Reason} -> [];
El -> [El]
end,
#pubsub_item{itemid = {ItemId, NodeId},
creation = {ToTime(Creation), JID},
modification = {ToTime(Modification), JID},
payload = Payload}.
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