1 local pubsub = require "util.pubsub";
2 local st = require "util.stanza";
3 local jid_bare = require "util.jid".bare;
4 local uuid_generate = require "util.uuid".generate;
6 require "core.modulemanager".load(module.host, "iq");
8 local xmlns_pubsub = "http://jabber.org/protocol/pubsub";
9 local xmlns_pubsub_errors = "http://jabber.org/protocol/pubsub#errors";
10 local xmlns_pubsub_event = "http://jabber.org/protocol/pubsub#event";
12 local autocreate_on_publish = module:get_option_boolean("autocreate_on_publish", false);
13 local autocreate_on_subscribe = module:get_option_boolean("autocreate_on_subscribe", false);
19 function handle_pubsub_iq(event)
20 local origin, stanza = event.origin, event.stanza;
21 local pubsub = stanza.tags[1];
22 local action = pubsub.tags[1];
23 local handler = handlers[stanza.attr.type.."_"..action.name];
25 handler(origin, stanza, action);
30 local pubsub_errors = {
31 ["conflict"] = { "cancel", "conflict" };
32 ["invalid-jid"] = { "modify", "bad-request", nil, "invalid-jid" };
33 ["item-not-found"] = { "cancel", "item-not-found" };
34 ["not-subscribed"] = { "modify", "unexpected-request", nil, "not-subscribed" };
35 ["forbidden"] = { "cancel", "forbidden" };
37 function pubsub_error_reply(stanza, error)
38 local e = pubsub_errors[error];
39 local reply = st.error_reply(stanza, unpack(e, 1, 3));
41 reply:tag(e[4], { xmlns = xmlns_pubsub_errors }):up();
46 function handlers.get_items(origin, stanza, items)
47 local node = items.attr.node;
48 local item = items:get_child("item");
49 local id = item and item.attr.id;
51 local ok, results = service:get_items(node, stanza.attr.from, id);
53 return origin.send(pubsub_error_reply(stanza, results));
56 local data = st.stanza("items", { node = node });
57 for _, entry in pairs(results) do
58 data:add_child(entry);
61 reply = st.reply(stanza)
62 :tag("pubsub", { xmlns = xmlns_pubsub })
65 reply = pubsub_error_reply(stanza, "item-not-found");
67 return origin.send(reply);
70 function handlers.set_create(origin, stanza, create)
71 local node = create.attr.node;
74 ok, ret = service:create(node, stanza.attr.from);
76 reply = st.reply(stanza);
78 reply = pubsub_error_reply(stanza, ret);
82 node = uuid_generate();
83 ok, ret = service:create(node, stanza.attr.from);
84 until ok or ret ~= "conflict";
86 reply = st.reply(stanza)
87 :tag("pubsub", { xmlns = xmlns_pubsub })
88 :tag("create", { node = node });
90 reply = pubsub_error_reply(stanza, ret);
93 return origin.send(reply);
96 function handlers.set_subscribe(origin, stanza, subscribe)
97 local node, jid = subscribe.attr.node, subscribe.attr.jid;
98 if jid_bare(jid) ~= jid_bare(stanza.attr.from) then
99 return origin.send(pubsub_error_reply(stanza, "invalid-jid"));
101 local ok, ret = service:add_subscription(node, stanza.attr.from, jid);
104 reply = st.reply(stanza)
105 :tag("pubsub", { xmlns = xmlns_pubsub })
106 :tag("subscription", {
109 subscription = "subscribed"
112 reply = pubsub_error_reply(stanza, ret);
114 return origin.send(reply);
117 function handlers.set_unsubscribe(origin, stanza, unsubscribe)
118 local node, jid = unsubscribe.attr.node, unsubscribe.attr.jid;
119 if jid_bare(jid) ~= jid_bare(stanza.attr.from) then
120 return origin.send(pubsub_error_reply(stanza, "invalid-jid"));
122 local ok, ret = service:remove_subscription(node, stanza.attr.from, jid);
125 reply = st.reply(stanza);
127 reply = pubsub_error_reply(stanza, ret);
129 return origin.send(reply);
132 function handlers.set_publish(origin, stanza, publish)
133 local node = publish.attr.node;
134 local item = publish:get_child("item");
135 local id = (item and item.attr.id) or uuid_generate();
136 local ok, ret = service:publish(node, stanza.attr.from, id, item);
139 reply = st.reply(stanza)
140 :tag("pubsub", { xmlns = xmlns_pubsub })
141 :tag("publish", { node = node })
142 :tag("item", { id = id });
144 reply = pubsub_error_reply(stanza, ret);
146 return origin.send(reply);
149 function handlers.set_retract(origin, stanza, retract)
150 local node, notify = retract.attr.node, retract.attr.notify;
151 notify = (notify == "1") or (notify == "true");
152 local item = retract:get_child("item");
153 local id = item and item.attr.id
154 local reply, notifier;
156 notifier = st.stanza("retract", { id = id });
158 local ok, ret = service:retract(node, stanza.attr.from, id, notifier);
160 reply = st.reply(stanza);
162 reply = pubsub_error_reply(stanza, ret);
164 return origin.send(reply);
167 function simple_broadcast(node, jids, item)
168 item = st.clone(item);
169 item.attr.xmlns = nil; -- Clear the pubsub namespace
170 local message = st.message({ from = module.host, type = "headline" })
171 :tag("event", { xmlns = xmlns_pubsub_event })
172 :tag("items", { node = node })
174 for jid in pairs(jids) do
175 module:log("debug", "Sending notification to %s", jid);
176 message.attr.to = jid;
177 core_post_stanza(hosts[module.host], message);
181 module:hook("iq/host/http://jabber.org/protocol/pubsub:pubsub", handle_pubsub_iq);
185 local feature_map = {
186 create = { "create-nodes", autocreate_on_publish and "instant-nodes", "item-ids" };
187 retract = { "delete-items", "retract-items" };
188 publish = { "publish" };
189 get_items = { "retrieve-items" };
190 add_subscription = { "subscribe" };
191 get_subscriptions = { "retrieve-subscriptions" };
194 local function add_disco_features_from_service(disco, service)
195 for method, features in pairs(feature_map) do
196 if service[method] then
197 for _, feature in ipairs(features) do
199 disco:tag("feature", { var = xmlns_pubsub.."#"..feature }):up();
204 for affiliation in pairs(service.config.capabilities) do
205 if affiliation ~= "none" and affiliation ~= "owner" then
206 disco:tag("feature", { var = xmlns_pubsub.."#"..affiliation.."-affiliation" }):up();
211 local function build_disco_info(service)
212 local disco_info = st.stanza("query", { xmlns = "http://jabber.org/protocol/disco#info" })
213 :tag("identity", { category = "pubsub", type = "service" }):up()
214 :tag("feature", { var = "http://jabber.org/protocol/pubsub" }):up();
215 add_disco_features_from_service(disco_info, service);
219 module:hook("iq-get/host/http://jabber.org/protocol/disco#info:query", function (event)
220 event.origin.send(st.reply(event.stanza):add_child(disco_info));
224 local function handle_disco_items_on_node(event)
225 local stanza, origin = event.stanza, event.origin;
226 local query = stanza.tags[1];
227 local node = query.attr.node;
228 local ok, ret = service:get_items(node, stanza.attr.from);
230 return origin.send(pubsub_error_reply(stanza, ret));
233 local reply = st.reply(stanza)
234 :tag("query", { xmlns = xmlns_disco_items });
236 for id, item in pairs(ret) do
237 reply:tag("item", { jid = module.host, name = id }):up();
240 return origin.send(reply);
244 module:hook("iq-get/host/http://jabber.org/protocol/disco#items:query", function (event)
245 if event.stanza.tags[1].attr.node then
246 return handle_disco_items_on_node(event);
248 local ok, ret = service:get_nodes(event.stanza.attr.from);
250 event.origin.send(pubsub_error_reply(stanza, ret));
252 local reply = st.reply(event.stanza)
253 :tag("query", { xmlns = "http://jabber.org/protocol/disco#items" });
254 for node, node_obj in pairs(ret) do
255 reply:tag("item", { jid = module.host, node = node, name = node_obj.config.name }):up();
257 event.origin.send(reply);
262 local admin_aff = module:get_option_string("default_admin_affiliation", "owner");
263 local function get_affiliation(jid)
264 local bare_jid = jid_bare(jid);
265 if bare_jid == module.host or usermanager.is_admin(bare_jid, module.host) then
270 function set_service(new_service)
271 service = new_service;
272 module.environment.service = service;
273 disco_info = build_disco_info(service);
276 function module.save()
277 return { service = service };
280 function module.restore(data)
281 set_service(data.service);
284 set_service(pubsub.new({
294 get_subscription = true;
297 subscribe_other = false;
298 unsubscribe_other = false;
299 get_subscription_other = false;
301 be_subscribed = true;
302 be_unsubscribed = true;
304 set_affiliation = false;
314 get_subscription = true;
318 subscribe_other = true;
319 unsubscribe_other = true;
320 get_subscription_other = true;
322 be_subscribed = true;
323 be_unsubscribed = true;
325 set_affiliation = true;
329 autocreate_on_publish = autocreate_on_publish;
330 autocreate_on_subscribe = autocreate_on_subscribe;
332 broadcaster = simple_broadcast;
333 get_affiliation = get_affiliation;
335 normalize_jid = jid_bare;