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node_flat_sql.erl
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node_flat_sql.erl
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%%%----------------------------------------------------------------------
%%% File : node_flat_sql.erl
%%% Author : Christophe Romain <christophe.romain@process-one.net>
%%% Purpose : Standard PubSub node plugin with ODBC backend
%%% Created : 1 Dec 2007 by Christophe Romain <christophe.romain@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2016 ProcessOne
%%%
%%% This program is free software; you can redistribute it and/or
%%% modify it under the terms of the GNU General Public License as
%%% published by the Free Software Foundation; either version 2 of the
%%% License, or (at your option) any later version.
%%%
%%% This program is distributed in the hope that it will be useful,
%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
%%% General Public License for more details.
%%%
%%% You should have received a copy of the GNU General Public License along
%%% with this program; if not, write to the Free Software Foundation, Inc.,
%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
%%%
%%%----------------------------------------------------------------------
%%% @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>
-module(node_flat_sql).
-behaviour(gen_pubsub_node).
-author('christophe.romain@process-one.net').
-compile([{parse_transform, ejabberd_sql_pt}]).
-include("pubsub.hrl").
-include("xmpp.hrl").
-include("ejabberd_sql_pt.hrl").
-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/7, 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_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/3, get_item/7,
get_item/2, set_item/1, get_item_name/3, node_to_path/1,
path_to_node/1,
get_entity_subscriptions_for_send_last/2, get_last_items/3]).
-export([decode_jid/1, encode_jid/1,
encode_jid_like/1,
decode_affiliation/1, decode_subscriptions/1,
encode_affiliation/1, encode_subscriptions/1,
encode_host/1,
encode_host_like/1]).
init(_Host, _ServerHost, _Opts) ->
%%pubsub_subscription_sql:init(Host, ServerHost, Opts),
ok.
terminate(_Host, _ServerHost) ->
ok.
options() ->
[{sql, true}, {rsm, true} | node_flat:options()].
features() ->
[<<"rsm">> | node_flat:features()].
create_node_permission(Host, ServerHost, Node, ParentNode, Owner, Access) ->
node_flat:create_node_permission(Host, ServerHost, Node, ParentNode, Owner, Access).
create_node(Nidx, Owner) ->
{_U, _S, _R} = OwnerKey = jid:tolower(jid:remove_resource(Owner)),
J = encode_jid(OwnerKey),
A = encode_affiliation(owner),
S = encode_subscriptions([]),
ejabberd_sql:sql_query_t(
?SQL("insert into pubsub_state("
"nodeid, jid, affiliation, subscriptions) "
"values (%(Nidx)d, %(J)s, %(A)s, %(S)s)")),
{result, {default, broadcast}}.
delete_node(Nodes) ->
Reply = lists:map(
fun(#pubsub_node{id = Nidx} = PubsubNode) ->
Subscriptions =
case ejabberd_sql:sql_query_t(
?SQL("select @(jid)s, @(subscriptions)s "
"from pubsub_state where nodeid=%(Nidx)d")) of
{selected, RItems} ->
[{decode_jid(SJID), decode_subscriptions(Subs)}
|| {SJID, Subs} <- RItems];
_ ->
[]
end,
{PubsubNode, Subscriptions}
end, Nodes),
{result, {default, broadcast, Reply}}.
subscribe_node(Nidx, Sender, Subscriber, AccessModel,
SendLast, PresenceSubscription, RosterGroup, _Options) ->
SubKey = jid:tolower(Subscriber),
GenKey = jid:remove_resource(SubKey),
Authorized = jid:tolower(jid:remove_resource(Sender)) == GenKey,
{Affiliation, Subscriptions} = select_affiliation_subscriptions(Nidx, GenKey, SubKey),
Whitelisted = lists:member(Affiliation, [member, publisher, owner]),
PendingSubscription = lists:any(fun
({pending, _}) -> true;
(_) -> false
end,
Subscriptions),
Owner = Affiliation == owner,
if not Authorized ->
{error, mod_pubsub:extended_error(
xmpp:err_bad_request(), mod_pubsub:err_invalid_jid())};
(Affiliation == outcast) or (Affiliation == publish_only) ->
{error, xmpp:err_forbidden()};
PendingSubscription ->
{error, mod_pubsub:extended_error(
xmpp:err_not_authorized(),
mod_pubsub:err_pending_subscription())};
(AccessModel == presence) and (not PresenceSubscription) and (not Owner) ->
{error, mod_pubsub:extended_error(
xmpp:err_not_authorized(),
mod_pubsub:err_presence_subscription_required())};
(AccessModel == roster) and (not RosterGroup) and (not Owner) ->
{error, mod_pubsub:extended_error(
xmpp:err_not_authorized(),
mod_pubsub:err_not_in_roster_group())};
(AccessModel == whitelist) and (not Whitelisted) and (not Owner) ->
{error, mod_pubsub:extended_error(
xmpp:err_not_allowed(), mod_pubsub:err_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_sql:subscribe_node(Subscriber, Nidx, Options),
{NewSub, SubId} = case Subscriptions of
[{subscribed, Id}|_] ->
{subscribed, Id};
[] ->
Id = pubsub_subscription_sql:make_subid(),
Sub = case AccessModel of
authorize -> pending;
_ -> subscribed
end,
update_subscription(Nidx, SubKey, [{Sub, Id} | Subscriptions]),
{Sub, Id}
end,
case {NewSub, SendLast} of
{subscribed, never} ->
{result, {default, subscribed, SubId}};
{subscribed, _} ->
{result, {default, subscribed, SubId, send_last}};
{_, _} ->
{result, {default, pending, SubId}}
end
end.
unsubscribe_node(Nidx, Sender, Subscriber, SubId) ->
SubKey = jid:tolower(Subscriber),
GenKey = jid:remove_resource(SubKey),
Authorized = jid:tolower(jid:remove_resource(Sender)) == GenKey,
{Affiliation, Subscriptions} = select_affiliation_subscriptions(Nidx, SubKey),
SubIdExists = case SubId of
<<>> -> false;
Binary when is_binary(Binary) -> true;
_ -> false
end,
if
%% Requesting entity is prohibited from unsubscribing entity
not Authorized ->
{error, xmpp: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, mod_pubsub:extended_error(
xmpp:err_unexpected_request(),
mod_pubsub:err_not_subscribed())};
%% Subid supplied, so use that.
SubIdExists ->
Sub = first_in_list(fun
({_, S}) when S == SubId -> true;
(_) -> false
end,
Subscriptions),
case Sub of
{value, S} ->
delete_subscription(SubKey, Nidx, S, Affiliation, Subscriptions),
{result, default};
false ->
{error, mod_pubsub:extended_error(
xmpp:err_unexpected_request(),
mod_pubsub:err_not_subscribed())}
end;
%% Asking to remove all subscriptions to the given node
SubId == all ->
[delete_subscription(SubKey, Nidx, S, Affiliation, Subscriptions)
|| S <- Subscriptions],
{result, default};
%% No subid supplied, but there's only one matching subscription
length(Subscriptions) == 1 ->
delete_subscription(SubKey, Nidx, hd(Subscriptions), Affiliation, Subscriptions),
{result, default};
%% No subid and more than one possible subscription match.
true ->
{error, mod_pubsub:extended_error(
xmpp:err_bad_request(), mod_pubsub:err_subid_required())}
end.
delete_subscription(SubKey, Nidx, {Subscription, SubId}, Affiliation, Subscriptions) ->
NewSubs = Subscriptions -- [{Subscription, SubId}],
%%pubsub_subscription_sql:unsubscribe_node(SubKey, Nidx, SubId),
case {Affiliation, NewSubs} of
{none, []} -> del_state(Nidx, SubKey);
_ -> update_subscription(Nidx, SubKey, NewSubs)
end.
publish_item(Nidx, Publisher, PublishModel, MaxItems, ItemId, Payload,
_PubOpts) ->
SubKey = jid:tolower(Publisher),
GenKey = jid:remove_resource(SubKey),
{Affiliation, Subscriptions} = select_affiliation_subscriptions(Nidx, GenKey, SubKey),
Subscribed = case PublishModel of
subscribers -> node_flat:is_subscribed(Subscriptions);
_ -> undefined
end,
if not ((PublishModel == open) or
(PublishModel == publishers) and
((Affiliation == owner)
or (Affiliation == publisher)
or (Affiliation == publish_only))
or (Subscribed == true)) ->
{error, xmpp:err_forbidden()};
true ->
if MaxItems > 0 ->
PubId = {p1_time_compat:timestamp(), SubKey},
set_item(#pubsub_item{itemid = {ItemId, Nidx},
creation = {p1_time_compat:timestamp(), GenKey},
modification = PubId,
payload = Payload}),
Items = [ItemId | itemids(Nidx, GenKey) -- [ItemId]],
{result, {_, OI}} = remove_extra_items(Nidx, MaxItems, Items),
{result, {default, broadcast, OI}};
true ->
{result, {default, broadcast, []}}
end
end.
remove_extra_items(_Nidx, unlimited, ItemIds) ->
{result, {ItemIds, []}};
remove_extra_items(Nidx, MaxItems, ItemIds) ->
NewItems = lists:sublist(ItemIds, MaxItems),
OldItems = lists:nthtail(length(NewItems), ItemIds),
del_items(Nidx, OldItems),
{result, {NewItems, OldItems}}.
delete_item(Nidx, Publisher, PublishModel, ItemId) ->
SubKey = jid:tolower(Publisher),
GenKey = jid:remove_resource(SubKey),
{result, Affiliation} = get_affiliation(Nidx, GenKey),
Allowed = Affiliation == publisher orelse
Affiliation == owner orelse
(PublishModel == open andalso
case get_item(Nidx, ItemId) of
{result, #pubsub_item{creation = {_, GenKey}}} -> true;
_ -> false
end),
if not Allowed ->
{error, xmpp:err_forbidden()};
true ->
case del_item(Nidx, ItemId) of
{updated, 1} -> {result, {default, broadcast}};
_ -> {error, xmpp:err_item_not_found()}
end
end.
purge_node(Nidx, Owner) ->
SubKey = jid:tolower(Owner),
GenKey = jid:remove_resource(SubKey),
GenState = get_state(Nidx, GenKey),
case GenState of
#pubsub_state{affiliation = owner} ->
{result, States} = get_states(Nidx),
lists:foreach(fun
(#pubsub_state{items = []}) -> ok;
(#pubsub_state{items = Items}) -> del_items(Nidx, Items)
end,
States),
{result, {default, broadcast}};
_ ->
{error, xmpp:err_forbidden()}
end.
get_entity_affiliations(Host, Owner) ->
SubKey = jid:tolower(Owner),
GenKey = jid:remove_resource(SubKey),
H = encode_host(Host),
J = encode_jid(GenKey),
{result,
case ejabberd_sql:sql_query_t(
?SQL("select @(node)s, @(type)s, @(i.nodeid)d, @(affiliation)s "
"from pubsub_state i, pubsub_node n where "
"i.nodeid = n.nodeid and jid=%(J)s and host=%(H)s")) of
{selected, RItems} ->
[{nodetree_tree_sql:raw_to_node(Host, {N, <<"">>, T, I}),
decode_affiliation(A)} || {N, T, I, A} <- RItems];
_ ->
[]
end}.
get_node_affiliations(Nidx) ->
{result,
case ejabberd_sql:sql_query_t(
?SQL("select @(jid)s, @(affiliation)s from pubsub_state "
"where nodeid=%(Nidx)d")) of
{selected, RItems} ->
[{decode_jid(J), decode_affiliation(A)} || {J, A} <- RItems];
_ ->
[]
end}.
get_affiliation(Nidx, Owner) ->
SubKey = jid:tolower(Owner),
GenKey = jid:remove_resource(SubKey),
J = encode_jid(GenKey),
{result,
case ejabberd_sql:sql_query_t(
?SQL("select @(affiliation)s from pubsub_state "
"where nodeid=%(Nidx)d and jid=%(J)s")) of
{selected, [{A}]} ->
decode_affiliation(A);
_ ->
none
end}.
set_affiliation(Nidx, Owner, Affiliation) ->
SubKey = jid:tolower(Owner),
GenKey = jid:remove_resource(SubKey),
{_, Subscriptions} = select_affiliation_subscriptions(Nidx, GenKey),
case {Affiliation, Subscriptions} of
{none, []} -> del_state(Nidx, GenKey);
_ -> update_affiliation(Nidx, GenKey, Affiliation)
end.
get_entity_subscriptions(Host, Owner) ->
SubKey = jid:tolower(Owner),
GenKey = jid:remove_resource(SubKey),
H = encode_host(Host),
SJ = encode_jid(SubKey),
GJ = encode_jid(GenKey),
GJLike = <<(encode_jid_like(GenKey))/binary, "/%">>,
Query =
case SubKey of
GenKey ->
?SQL("select @(node)s, @(type)s, @(i.nodeid)d,"
" @(jid)s, @(subscriptions)s "
"from pubsub_state i, pubsub_node n "
"where i.nodeid = n.nodeid and "
"(jid=%(GJ)s or jid like %(GJLike)s escape '^')"
" and host=%(H)s");
_ ->
?SQL("select @(node)s, @(type)s, @(i.nodeid)d,"
" @(jid)s, @(subscriptions)s "
"from pubsub_state i, pubsub_node n "
"where i.nodeid = n.nodeid and"
" jid in (%(SJ)s, %(GJ)s) and host=%(H)s")
end,
{result,
case ejabberd_sql:sql_query_t(Query) of
{selected, RItems} ->
lists:foldl(
fun({N, T, I, J, S}, Acc) ->
Node = nodetree_tree_sql: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}.
-spec get_entity_subscriptions_for_send_last(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 = jid:tolower(Owner),
GenKey = jid:remove_resource(SubKey),
H = encode_host(Host),
SJ = encode_jid(SubKey),
GJ = encode_jid(GenKey),
GJLike = <<(encode_jid_like(GenKey))/binary, "/%">>,
Query =
case SubKey of
GenKey ->
?SQL("select @(node)s, @(type)s, @(i.nodeid)d,"
" @(jid)s, @(subscriptions)s "
"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=%(GJ)s or jid like %(GJLike)s escape '^')"
" and host=%(H)s");
_ ->
?SQL("select @(node)s, @(type)s, @(i.nodeid)d,"
" @(jid)s, @(subscriptions)s "
"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)s, %(GJ)s) and host=%(H)s")
end,
{result,
case ejabberd_sql:sql_query_t(Query) of
{selected, RItems} ->
lists:foldl(
fun ({N, T, I, J, S}, Acc) ->
Node = nodetree_tree_sql: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}.
get_node_subscriptions(Nidx) ->
{result,
case ejabberd_sql:sql_query_t(
?SQL("select @(jid)s, @(subscriptions)s from pubsub_state "
"where nodeid=%(Nidx)d")) of
{selected, 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}.
get_subscriptions(Nidx, Owner) ->
SubKey = jid:tolower(Owner),
J = encode_jid(SubKey),
{result,
case ejabberd_sql:sql_query_t(
?SQL("select @(subscriptions)s from pubsub_state"
" where nodeid=%(Nidx)d and jid=%(J)s")) of
{selected, [{S}]} ->
decode_subscriptions(S);
_ ->
[]
end}.
set_subscriptions(Nidx, Owner, Subscription, SubId) ->
SubKey = jid:tolower(Owner),
SubState = get_state_without_itemids(Nidx, SubKey),
case {SubId, SubState#pubsub_state.subscriptions} of
{_, []} ->
case Subscription of
none ->
{error, mod_pubsub:extended_error(
xmpp:err_bad_request(),
mod_pubsub:err_not_subscribed())};
_ ->
new_subscription(Nidx, Owner, Subscription, SubState)
end;
{<<>>, [{_, SID}]} ->
case Subscription of
none -> unsub_with_subid(Nidx, SID, SubState);
_ -> replace_subscription({Subscription, SID}, SubState)
end;
{<<>>, [_ | _]} ->
{error, mod_pubsub:extended_error(
xmpp:err_bad_request(),
mod_pubsub:err_subid_required())};
_ ->
case Subscription of
none -> unsub_with_subid(Nidx, SubId, SubState);
_ -> replace_subscription({Subscription, SubId}, SubState)
end
end.
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]).
new_subscription(_Nidx, _Owner, Subscription, SubState) ->
%%{result, SubId} = pubsub_subscription_sql:subscribe_node(Owner, Nidx, []),
SubId = pubsub_subscription_sql:make_subid(),
Subscriptions = [{Subscription, SubId} | SubState#pubsub_state.subscriptions],
set_state(SubState#pubsub_state{subscriptions = Subscriptions}),
{Subscription, SubId}.
unsub_with_subid(Nidx, SubId, SubState) ->
%%pubsub_subscription_sql:unsubscribe_node(SubState#pubsub_state.stateid, Nidx, SubId),
NewSubs = [{S, Sid}
|| {S, Sid} <- SubState#pubsub_state.subscriptions,
SubId =/= Sid],
case {NewSubs, SubState#pubsub_state.affiliation} of
{[], none} -> del_state(Nidx, element(1, SubState#pubsub_state.stateid));
_ -> set_state(SubState#pubsub_state{subscriptions = NewSubs})
end.
get_pending_nodes(Host, Owner) ->
GenKey = jid:remove_resource(jid:tolower(Owner)),
States = mnesia:match_object(#pubsub_state{stateid = {GenKey, '_'},
affiliation = owner, _ = '_'}),
Nidxxs = [Nidx || #pubsub_state{stateid = {_, Nidx}} <- States],
NodeTree = mod_pubsub:tree(Host),
Reply = mnesia:foldl(fun (#pubsub_state{stateid = {_, Nidx}} = S, Acc) ->
case lists:member(Nidx, Nidxxs) 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.
get_states(Nidx) ->
case ejabberd_sql:sql_query_t(
?SQL("select @(jid)s, @(affiliation)s, @(subscriptions)s "
"from pubsub_state where nodeid=%(Nidx)d")) of
{selected, RItems} ->
{result,
lists:map(
fun({SJID, Aff, Subs}) ->
JID = decode_jid(SJID),
#pubsub_state{stateid = {JID, Nidx},
items = itemids(Nidx, JID),
affiliation = decode_affiliation(Aff),
subscriptions = decode_subscriptions(Subs)}
end, RItems)};
_ ->
{result, []}
end.
get_state(Nidx, JID) ->
State = get_state_without_itemids(Nidx, JID),
{SJID, _} = State#pubsub_state.stateid,
State#pubsub_state{items = itemids(Nidx, SJID)}.
-spec get_state_without_itemids(Nidx :: mod_pubsub:nodeIdx(), Key :: ljid()) ->
mod_pubsub:pubsubState().
get_state_without_itemids(Nidx, JID) ->
J = encode_jid(JID),
case ejabberd_sql:sql_query_t(
?SQL("select @(jid)s, @(affiliation)s, @(subscriptions)s "
"from pubsub_state "
"where nodeid=%(Nidx)d and jid=%(J)s")) of
{selected, [{SJID, Aff, Subs}]} ->
#pubsub_state{stateid = {decode_jid(SJID), Nidx},
affiliation = decode_affiliation(Aff),
subscriptions = decode_subscriptions(Subs)};
_ ->
#pubsub_state{stateid = {JID, Nidx}}
end.
set_state(State) ->
{_, Nidx} = State#pubsub_state.stateid,
set_state(Nidx, State).
set_state(Nidx, State) ->
{JID, _} = State#pubsub_state.stateid,
J = encode_jid(JID),
S = encode_subscriptions(State#pubsub_state.subscriptions),
A = encode_affiliation(State#pubsub_state.affiliation),
?SQL_UPSERT_T(
"pubsub_state",
["!nodeid=%(Nidx)d",
"!jid=%(J)s",
"affiliation=%(A)s",
"subscriptions=%(S)s"
]),
ok.
del_state(Nidx, JID) ->
J = encode_jid(JID),
catch ejabberd_sql:sql_query_t(
?SQL("delete from pubsub_state"
" where jid=%(J)s and nodeid=%(Nidx)d")),
ok.
get_items(Nidx, From, undefined) ->
MaxItems = case ejabberd_sql:sql_query_t(
?SQL("select @(val)s from pubsub_node_option "
"where nodeid=%(Nidx)d and name='max_items'")) of
{selected, [{Value}]} ->
jlib:expr_to_term(Value);
_ ->
?MAXITEMS
end,
get_items(Nidx, From, #rsm_set{max = MaxItems});
get_items(Nidx, _From, #rsm_set{max = Max, index = IncIndex,
'after' = After, before = Before}) ->
{Way, Order} = if After == <<>> -> {<<"is not">>, <<"desc">>};
After /= undefined -> {<<"<">>, <<"desc">>};
Before == <<>> -> {<<"is not">>, <<"asc">>};
Before /= undefined -> {<<">">>, <<"asc">>};
true -> {<<"is not">>, <<"desc">>}
end,
SNidx = jlib:i2l(Nidx),
I = if After /= undefined -> After;
Before /= undefined -> Before;
true -> undefined
end,
[AttrName, Id] =
case I of
undefined when IncIndex =/= undefined ->
case ejabberd_sql:sql_query_t(
[<<"select modification from pubsub_item pi "
"where exists ( select count(*) as count1 "
"from pubsub_item where nodeid='">>, SNidx,
<<"' and modification > pi.modification having count1 = ">>,
integer_to_binary(IncIndex), <<" );">>]) of
{selected, [_], [[O]]} ->
[<<"modification">>, <<"'", O/binary, "'">>];
_ ->
[<<"modification">>, <<"null">>]
end;
undefined ->
[<<"modification">>, <<"null">>];
<<>> ->
[<<"modification">>, <<"null">>];
I ->
[A, B] = str:tokens(ejabberd_sql:escape(I), <<"@">>),
[A, <<"'", B/binary, "'">>]
end,
Count = case ejabberd_sql:sql_query_t(
[<<"select count(*) from pubsub_item where nodeid='">>,
SNidx, <<"';">>]) of
{selected, [_], [[C]]} -> binary_to_integer(C);
_ -> 0
end,
Query = fun(mssql, _) ->
ejabberd_sql:sql_query_t(
[<<"select top ">>, integer_to_binary(Max),
<<" itemid, publisher, creation, modification, payload "
"from pubsub_item where nodeid='">>, SNidx,
<<"' and ">>, AttrName, <<" ">>, Way, <<" ">>, Id, <<" order by ">>,
AttrName, <<" ">>, Order, <<";">>]);
(_, _) ->
ejabberd_sql:sql_query_t(
[<<"select itemid, publisher, creation, modification, payload "
"from pubsub_item where nodeid='">>, SNidx,
<<"' and ">>, AttrName, <<" ">>, Way, <<" ">>, Id, <<" order by ">>,
AttrName, <<" ">>, Order, <<" limit ">>,
integer_to_binary(Max), <<" ;">>])
end,
case ejabberd_sql:sql_query_t(Query) of
{selected, [<<"itemid">>, <<"publisher">>, <<"creation">>,
<<"modification">>, <<"payload">>], RItems} ->
case RItems of
[[_, _, _, F, _]|_] ->
Index = case catch ejabberd_sql:sql_query_t(
[<<"select count(*) from pubsub_item "
"where nodeid='">>, SNidx, <<"' and ">>,
AttrName, <<" > '">>, F, <<"';">>]) of
{selected, [_], [[In]]} -> binary_to_integer(In);
_ -> 0
end,
[_, _, _, L, _] = lists:last(RItems),
RsmOut = #rsm_set{count = Count,
index = Index,
first = #rsm_first{
index = Index,
data = <<"modification@", F/binary>>},
last = <<"modification@", L/binary>>},
{result, {[raw_to_item(Nidx, RItem) || RItem <- RItems], RsmOut}};
[] ->
{result, {[], #rsm_set{count = Count}}}
end;
_ ->
{result, {[], undefined}}
end.
get_items(Nidx, JID, AccessModel, PresenceSubscription, RosterGroup, _SubId, RSM) ->
SubKey = jid:tolower(JID),
GenKey = jid:remove_resource(SubKey),
{Affiliation, Subscriptions} = select_affiliation_subscriptions(Nidx, GenKey, SubKey),
Whitelisted = node_flat: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) or (Affiliation == publish_only) ->
{error, xmpp:err_forbidden()};
(AccessModel == presence) and not PresenceSubscription ->
{error, mod_pubsub:extended_error(
xmpp:err_not_authorized(),
mod_pubsub:err_presence_subscription_required())};
(AccessModel == roster) and not RosterGroup ->
{error, mod_pubsub:extended_error(
xmpp:err_not_authorized(),
mod_pubsub:err_not_in_roster_group())};
(AccessModel == whitelist) and not Whitelisted ->
{error, mod_pubsub:extended_error(
xmpp:err_not_allowed(), mod_pubsub:err_closed_node())};
(AccessModel == authorize) and not Whitelisted ->
{error, xmpp:err_forbidden()};
%%MustPay ->
%% % Payment is required for a subscription
%% {error, ?ERR_PAYMENT_REQUIRED};
true ->
get_items(Nidx, JID, RSM)
end.
get_last_items(Nidx, _From, Count) ->
Limit = jlib:i2l(Count),
SNidx = jlib:i2l(Nidx),
Query = fun(mssql, _) ->
ejabberd_sql:sql_query_t(
[<<"select top ">>, Limit,
<<" itemid, publisher, creation, modification, payload "
"from pubsub_item where nodeid='">>, SNidx,
<<"' order by modification desc ;">>]);
(_, _) ->
ejabberd_sql:sql_query_t(
[<<"select itemid, publisher, creation, modification, payload "
"from pubsub_item where nodeid='">>, SNidx,
<<"' order by modification desc limit ">>, Limit, <<";">>])
end,
case catch ejabberd_sql:sql_query_t(Query) of
{selected,
[<<"itemid">>, <<"publisher">>, <<"creation">>, <<"modification">>, <<"payload">>], RItems} ->
{result, [raw_to_item(Nidx, RItem) || RItem <- RItems]};
_ ->
{result, []}
end.
get_item(Nidx, ItemId) ->
case catch ejabberd_sql:sql_query_t(
?SQL("select @(itemid)s, @(publisher)s, @(creation)s,"
" @(modification)s, @(payload)s from pubsub_item"
" where nodeid=%(Nidx)d and itemid=%(ItemId)s"))
of
{selected, [RItem]} ->
{result, raw_to_item(Nidx, RItem)};
{selected, []} ->
{error, xmpp:err_item_not_found()};
{'EXIT', _} ->
{error, xmpp:err_internal_server_error(<<"Database failure">>, ?MYLANG)}
end.
get_item(Nidx, ItemId, JID, AccessModel, PresenceSubscription, RosterGroup, _SubId) ->
SubKey = jid:tolower(JID),
GenKey = jid:remove_resource(SubKey),
{Affiliation, Subscriptions} = select_affiliation_subscriptions(Nidx, GenKey, SubKey),
Whitelisted = node_flat: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) or (Affiliation == publish_only) ->
{error, xmpp:err_forbidden()};
(AccessModel == presence) and not PresenceSubscription ->
{error, mod_pubsub:extended_error(
xmpp:err_not_authorized(),
mod_pubsub:err_presence_subscription_required())};
(AccessModel == roster) and not RosterGroup ->
{error, mod_pubsub:extended_error(
xmpp:err_not_authorized(),
mod_pubsub:err_not_in_roster_group())};
(AccessModel == whitelist) and not Whitelisted ->
{error, mod_pubsub:extended_error(
xmpp:err_not_allowed(), mod_pubsub:err_closed_node())};
(AccessModel == authorize) and not Whitelisted ->
{error, xmpp:err_forbidden()};
%%MustPay ->
%% % Payment is required for a subscription
%% {error, ?ERR_PAYMENT_REQUIRED};
true ->
get_item(Nidx, ItemId)
end.
set_item(Item) ->
{ItemId, Nidx} = Item#pubsub_item.itemid,
{C, _} = Item#pubsub_item.creation,
{M, JID} = Item#pubsub_item.modification,
P = encode_jid(JID),
Payload = Item#pubsub_item.payload,
XML = str:join([fxml: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,
SM = S(M),
SC = S(C),
?SQL_UPSERT_T(
"pubsub_item",
["!nodeid=%(Nidx)d",
"!itemid=%(ItemId)s",
"publisher=%(P)s",
"modification=%(SM)s",
"payload=%(XML)s",
"-creation=%(SC)s"
]),
ok.
del_item(Nidx, ItemId) ->
catch ejabberd_sql:sql_query_t(
?SQL("delete from pubsub_item where itemid=%(ItemId)s"
" and nodeid=%(Nidx)d")).
del_items(_, []) ->
ok;
del_items(Nidx, [ItemId]) ->
del_item(Nidx, ItemId);
del_items(Nidx, ItemIds) ->
I = str:join([[<<"'">>, ejabberd_sql:escape(X), <<"'">>] || X <- ItemIds], <<",">>),
SNidx = jlib:i2l(Nidx),
catch
ejabberd_sql:sql_query_t([<<"delete from pubsub_item where itemid in (">>,
I, <<") and nodeid='">>, SNidx, <<"';">>]).
get_item_name(_Host, _Node, Id) ->
Id.
node_to_path(Node) ->
node_flat:node_to_path(Node).
path_to_node(Path) ->
node_flat:path_to_node(Path).
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(Nidx, {_U, _S, _R} = JID) ->
SJID = encode_jid(JID),
SJIDLike = <<(encode_jid_like(JID))/binary, "/%">>,
case catch
ejabberd_sql:sql_query_t(
?SQL("select @(itemid)s from pubsub_item where "
"nodeid=%(Nidx)d and (publisher=%(SJID)s"
" or publisher like %(SJIDLike)s escape '^') "
"order by modification desc"))
of
{selected, RItems} ->
[ItemId || {ItemId} <- RItems];
_ ->
[]
end.
select_affiliation_subscriptions(Nidx, JID) ->
J = encode_jid(JID),
case catch
ejabberd_sql:sql_query_t(
?SQL("select @(affiliation)s, @(subscriptions)s from "
" pubsub_state where nodeid=%(Nidx)d and jid=%(J)s"))
of
{selected, [{A, S}]} ->
{decode_affiliation(A), decode_subscriptions(S)};
_ ->
{none, []}
end.
select_affiliation_subscriptions(Nidx, JID, JID) ->
select_affiliation_subscriptions(Nidx, JID);
select_affiliation_subscriptions(Nidx, GenKey, SubKey) ->
{result, Affiliation} = get_affiliation(Nidx, GenKey),
{result, BareJidSubs} = get_subscriptions(Nidx, GenKey),
{result, FullJidSubs} = get_subscriptions(Nidx, SubKey),
{Affiliation, BareJidSubs++FullJidSubs}.
update_affiliation(Nidx, JID, Affiliation) ->
J = encode_jid(JID),
A = encode_affiliation(Affiliation),
?SQL_UPSERT_T(
"pubsub_state",
["!nodeid=%(Nidx)d",
"!jid=%(J)s",
"affiliation=%(A)s",
"-subscriptions=''"
]).
update_subscription(Nidx, JID, Subscription) ->
J = encode_jid(JID),
S = encode_subscriptions(Subscription),
?SQL_UPSERT_T(
"pubsub_state",
["!nodeid=%(Nidx)d",
"!jid=%(J)s",
"subscriptions=%(S)s",
"-affiliation='n'"
]).
-spec decode_jid(SJID :: binary()) -> ljid().
decode_jid(SJID) ->
jid:tolower(jid:from_string(SJID)).
-spec decode_affiliation(Arg :: binary()) -> atom().
decode_affiliation(<<"o">>) -> owner;
decode_affiliation(<<"p">>) -> publisher;
decode_affiliation(<<"u">>) -> publish_only;
decode_affiliation(<<"m">>) -> member;
decode_affiliation(<<"c">>) -> outcast;
decode_affiliation(_) -> none.
-spec decode_subscription(Arg :: binary()) -> atom().
decode_subscription(<<"s">>) -> subscribed;
decode_subscription(<<"p">>) -> pending;
decode_subscription(<<"u">>) -> unconfigured;
decode_subscription(_) -> none.
-spec decode_subscriptions(Subscriptions :: binary()) -> [] | [{atom(), binary()},...].
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, <<",">>)).
-spec encode_jid(JID :: ljid()) -> binary().
encode_jid(JID) ->
jid:to_string(JID).
-spec encode_jid_like(JID :: ljid()) -> binary().
encode_jid_like(JID) ->
ejabberd_sql:escape_like_arg_circumflex(jid:to_string(JID)).
-spec encode_host(Host :: host()) -> binary().
encode_host({_U, _S, _R} = LJID) -> encode_jid(LJID);
encode_host(Host) -> Host.