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-rw-r--r--plugins/mod_pubsub/mod_pubsub.lua229
1 files changed, 229 insertions, 0 deletions
diff --git a/plugins/mod_pubsub/mod_pubsub.lua b/plugins/mod_pubsub/mod_pubsub.lua
new file mode 100644
index 00000000..81a66f8b
--- /dev/null
+++ b/plugins/mod_pubsub/mod_pubsub.lua
@@ -0,0 +1,229 @@
+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("name");
+if type(pubsub_disco_name) ~= "string" then pubsub_disco_name = "Prosody PubSub Service"; end
+
+local service;
+
+local lib_pubsub = module:require "pubsub";
+local handlers = lib_pubsub.handlers;
+local pubsub_error_reply = lib_pubsub.pubsub_error_reply;
+
+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 = stanza.tags[1];
+ local action = pubsub.tags[1];
+ if not action then
+ return origin.send(st.error_reply(stanza, "cancel", "bad-request"));
+ 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)
+ if item then
+ item = st.clone(item);
+ item.attr.xmlns = nil; -- Clear the pubsub namespace
+ 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" };
+};
+
+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, origin, reply, node = event.stanza, event.origin, event.reply, event.node;
+ local ok, ret = service:get_nodes(stanza.attr.from);
+ if ok and not ret[node] then
+ return;
+ end
+ if not ok then
+ return origin.send(pubsub_error_reply(stanza, ret));
+ end
+ event.exists = true;
+ reply:tag("identity", { category = "pubsub", type = "leaf" });
+end);
+
+module:hook("host-disco-items-node", function (event)
+ local stanza, origin, reply, node = event.stanza, event.origin, event.reply, event.node;
+ local ok, ret = service:get_items(node, stanza.attr.from);
+ if not ok then
+ return origin.send(pubsub_error_reply(stanza, ret));
+ end
+
+ for id, item in pairs(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, origin, reply = event.stanza, event.origin, event.reply;
+ local ok, ret = service:get_nodes(event.stanza.attr.from);
+ if not ok then
+ return origin.send(pubsub_error_reply(event.stanza, ret));
+ 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;
+
+ 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