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mod_pep: Prevent creation of services for non-existent users

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Using a dedicated service should give identical behavior, except for a
possible timing difference in the user existence lookup.
This commit is contained in:
Kim Alvefur 2021-11-04 00:55:59 +01:00
parent 4a89e829d4
commit db0e630ad7
1 changed files with 15 additions and 0 deletions
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15
plugins/mod_pep.lua
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@ -9,6 +9,7 @@ local is_contact_subscribed = require "core.rostermanager".is_contact_subscribed
local cache = require "util.cache"; local cache = require "util.cache";
local set = require "util.set"; local set = require "util.set";
local storagemanager = require "core.storagemanager"; local storagemanager = require "core.storagemanager";
local usermanager = require "core.usermanager";
local xmlns_pubsub = "http://jabber.org/protocol/pubsub"; local xmlns_pubsub = "http://jabber.org/protocol/pubsub";
local xmlns_pubsub_event = "http://jabber.org/protocol/pubsub#event"; local xmlns_pubsub_event = "http://jabber.org/protocol/pubsub#event";
@ -174,6 +175,17 @@ local function get_subscriber_filter(username)
end end
end end
local nobody_service = pubsub.new({
service = pubsub.new({
node_defaults = {
["max_items"] = 1;
["persist_items"] = false;
["access_model"] = "presence";
["send_last_published_item"] = "on_sub_and_presence";
};
});
});
function get_pep_service(username) function get_pep_service(username)
module:log("debug", "get_pep_service(%q)", username); module:log("debug", "get_pep_service(%q)", username);
local user_bare = jid_join(username, host); local user_bare = jid_join(username, host);
@ -181,6 +193,9 @@ function get_pep_service(username)
if service then if service then
return service; return service;
end end
if not usermanager.user_exists(username, host) then
return nobody_service;
end
service = pubsub.new({ service = pubsub.new({
pep_username = username; pep_username = username;
node_defaults = { node_defaults = {