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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 new_id = require "util.id".medium;
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 enable_persistence = module:get_option_boolean("experimental_pubsub_item_persistence", false);
local service;
local lib_pubsub = module:require "pubsub";
module:depends("disco");
module:add_identity("pubsub", "service", pubsub_disco_name);
module:add_feature("http://jabber.org/protocol/pubsub");
function handle_pubsub_iq(event)
return lib_pubsub.handle_pubsub_iq(event, service);
end
local node_store = module:open_store(module.name.."_nodes");
local function create_simple_itemstore(node_config, node_name)
local archive = module:open_store("pubsub_"..node_name, "archive");
return lib_pubsub.archive_itemstore(archive, node_config, nil, node_name);
end
if enable_persistence then
module:log("warn", "Item persistence is an experimental feature. Note that ownership information is lost on restart.")
else
create_simple_itemstore = nil;
end
function simple_broadcast(kind, node, jids, item, actor, node_obj)
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 id = new_id();
local msg_type = node_obj and node_obj.config.message_type or "headline";
local message = st.message({ from = module.host, type = msg_type, id = id })
:tag("event", { xmlns = xmlns_pubsub_event })
:tag(kind, { node = node })
if item then
message:add_child(item);
end
-- Compose a sensible textual representation of at least Atom payloads
if node_obj and item and node_obj.config.include_body and item.tags[1] then
local payload = item.tags[1];
if payload.attr.xmlns == "http://www.w3.org/2005/Atom" then
message:reset();
local title = payload:get_child_text("title");
local summary = payload:get_child_text("summary");
if not summary and title then
local author = payload:find("author/name#");
summary = title;
if author then
summary = author .. " posted " .. summary;
end
end
if summary then
message:body(summary);
end
end
end
module:broadcast(jids, message, pairs);
end
function is_item_stanza(item)
return st.is_stanza(item) and item.attr.xmlns == xmlns_pubsub and item.name == "item";
end
module:hook("iq/host/"..xmlns_pubsub..":pubsub", handle_pubsub_iq);
module:hook("iq/host/"..xmlns_pubsub_owner..":pubsub", handle_pubsub_iq);
local function add_disco_features_from_service(service) --luacheck: ignore 431/service
for feature in lib_pubsub.get_feature_set(service) do
module:add_feature(xmlns_pubsub.."#"..feature);
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;
nodestore = node_store;
itemstore = create_simple_itemstore;
broadcaster = simple_broadcast;
itemcheck = is_item_stanza;
get_affiliation = get_affiliation;
normalize_jid = jid_bare;
}));
end
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