diff options
Diffstat (limited to 'plugins/mod_pubsub/mod_pubsub.lua')
| -rw-r--r-- | plugins/mod_pubsub/mod_pubsub.lua | 238 |
1 files changed, 238 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..e93a5238 --- /dev/null +++ b/plugins/mod_pubsub/mod_pubsub.lua @@ -0,0 +1,238 @@ +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 expose_publisher = module:get_option_boolean("expose_publisher", false) + +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 + 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, origin, reply, node = event.stanza, event.origin, 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, 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; + 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, origin, reply = event.stanza, event.origin, event.reply; + local ok, ret = service:get_nodes(event.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 unowned_aff = module:get_option_string("default_unowned_affiliation"); +local function get_affiliation(jid, node) + local bare_jid = jid_bare(jid); + if bare_jid == module.host or usermanager.is_admin(bare_jid, module.host) then + return admin_aff; + end + if not node then + return unowned_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 |