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local pubsub = require "util.pubsub";
local st = require "util.stanza";
local jid_bare = require "util.jid".bare;
local usermanager = require "core.usermanager";
local xmlns_pubsub = "http://jabber.org/protocol/pubsub";
local xmlns_pubsub_event = "http://jabber.org/protocol/pubsub#event";
local xmlns_pubsub_owner = "http://jabber.org/protocol/pubsub#owner";
local autocreate_on_publish = module:get_option_boolean("autocreate_on_publish", false);
local autocreate_on_subscribe = module:get_option_boolean("autocreate_on_subscribe", false);
local pubsub_disco_name = module:get_option_string("name", "Prosody PubSub Service");
local expose_publisher = module:get_option_boolean("expose_publisher", false)
local service;
local lib_pubsub = module:require "pubsub";
local handlers = lib_pubsub.handlers;
module:depends("disco");
module:add_identity("pubsub", "service", pubsub_disco_name);
module:add_feature("http://jabber.org/protocol/pubsub");
function handle_pubsub_iq(event)
local origin, stanza = event.origin, event.stanza;
local pubsub_tag = stanza.tags[1];
local action = pubsub_tag.tags[1];
if not action then
origin.send(st.error_reply(stanza, "cancel", "bad-request"));
return true;
end
local handler = handlers[stanza.attr.type.."_"..action.name];
if handler then
handler(origin, stanza, action, service);
return true;
end
end
function simple_broadcast(kind, node, jids, item, actor)
if item then
item = st.clone(item);
item.attr.xmlns = nil; -- Clear the pubsub namespace
if expose_publisher and actor then
item.attr.publisher = actor
end
end
local message = st.message({ from = module.host, type = "headline" })
:tag("event", { xmlns = xmlns_pubsub_event })
:tag(kind, { node = node })
:add_child(item);
for jid in pairs(jids) do
module:log("debug", "Sending notification to %s", jid);
message.attr.to = jid;
module:send(message);
end
end
module:hook("iq/host/"..xmlns_pubsub..":pubsub", handle_pubsub_iq);
module:hook("iq/host/"..xmlns_pubsub_owner..":pubsub", handle_pubsub_iq);
local feature_map = {
create = { "create-nodes", "instant-nodes", "item-ids" };
retract = { "delete-items", "retract-items" };
purge = { "purge-nodes" };
publish = { "publish", autocreate_on_publish and "auto-create" };
delete = { "delete-nodes" };
get_items = { "retrieve-items" };
add_subscription = { "subscribe" };
get_subscriptions = { "retrieve-subscriptions" };
set_configure = { "config-node" };
get_default = { "retrieve-default" };
};
local function add_disco_features_from_service(service)
for method, features in pairs(feature_map) do
if service[method] then
for _, feature in ipairs(features) do
if feature then
module:add_feature(xmlns_pubsub.."#"..feature);
end
end
end
end
for affiliation in pairs(service.config.capabilities) do
if affiliation ~= "none" and affiliation ~= "owner" then
module:add_feature(xmlns_pubsub.."#"..affiliation.."-affiliation");
end
end
end
module:hook("host-disco-info-node", function (event)
local stanza, reply, node = event.stanza, event.reply, event.node;
local ok, ret = service:get_nodes(stanza.attr.from);
if not ok or not ret[node] then
return;
end
event.exists = true;
reply:tag("identity", { category = "pubsub", type = "leaf" });
end);
module:hook("host-disco-items-node", function (event)
local stanza, reply, node = event.stanza, event.reply, event.node;
local ok, ret = service:get_items(node, stanza.attr.from);
if not ok then
return;
end
for _, id in ipairs(ret) do
reply:tag("item", { jid = module.host, name = id }):up();
end
event.exists = true;
end);
module:hook("host-disco-items", function (event)
local stanza, reply = event.stanza, event.reply;
local ok, ret = service:get_nodes(stanza.attr.from);
if not ok then
return;
end
for node, node_obj in pairs(ret) do
reply:tag("item", { jid = module.host, node = node, name = node_obj.config.name }):up();
end
end);
local admin_aff = module:get_option_string("default_admin_affiliation", "owner");
local function get_affiliation(jid)
local bare_jid = jid_bare(jid);
if bare_jid == module.host or usermanager.is_admin(bare_jid, module.host) then
return admin_aff;
end
end
function set_service(new_service)
service = new_service;
module.environment.service = service;
add_disco_features_from_service(service);
end
function module.save()
return { service = service };
end
function module.restore(data)
set_service(data.service);
end
function module.load()
if module.reloading then return; end
set_service(pubsub.new({
capabilities = {
none = {
create = false;
publish = false;
retract = false;
get_nodes = true;
subscribe = true;
unsubscribe = true;
get_subscription = true;
get_subscriptions = true;
get_items = true;
subscribe_other = false;
unsubscribe_other = false;
get_subscription_other = false;
get_subscriptions_other = false;
be_subscribed = true;
be_unsubscribed = true;
set_affiliation = false;
};
publisher = {
create = false;
publish = true;
retract = true;
get_nodes = true;
subscribe = true;
unsubscribe = true;
get_subscription = true;
get_subscriptions = true;
get_items = true;
subscribe_other = false;
unsubscribe_other = false;
get_subscription_other = false;
get_subscriptions_other = false;
be_subscribed = true;
be_unsubscribed = true;
set_affiliation = false;
};
owner = {
create = true;
publish = true;
retract = true;
delete = true;
get_nodes = true;
configure = true;
subscribe = true;
unsubscribe = true;
get_subscription = true;
get_subscriptions = true;
get_items = true;
subscribe_other = true;
unsubscribe_other = true;
get_subscription_other = true;
get_subscriptions_other = true;
be_subscribed = true;
be_unsubscribed = true;
set_affiliation = true;
};
};
autocreate_on_publish = autocreate_on_publish;
autocreate_on_subscribe = autocreate_on_subscribe;
broadcaster = simple_broadcast;
get_affiliation = get_affiliation;
normalize_jid = jid_bare;
}));
end
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