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 local xmlns_pubsub = "http://jabber.org/protocol/pubsub";
7 local xmlns_pubsub_errors = "http://jabber.org/protocol/pubsub#errors";
8 local xmlns_pubsub_event = "http://jabber.org/protocol/pubsub#event";
10 local autocreate_on_publish = module:get_option_boolean("autocreate_on_publish", false);
11 local autocreate_on_subscribe = module:get_option_boolean("autocreate_on_subscribe", false);
17 function handle_pubsub_iq(event)
18 local origin, stanza = event.origin, event.stanza;
19 local pubsub = stanza.tags[1];
20 local action = pubsub.tags[1];
21 local handler = handlers[stanza.attr.type.."_"..action.name];
23 handler(origin, stanza, action);
28 local pubsub_errors = {
29 ["conflict"] = { "cancel", "conflict" };
30 ["invalid-jid"] = { "modify", "bad-request", nil, "invalid-jid" };
31 ["item-not-found"] = { "cancel", "item-not-found" };
32 ["not-subscribed"] = { "modify", "unexpected-request", nil, "not-subscribed" };
33 ["forbidden"] = { "cancel", "forbidden" };
35 function pubsub_error_reply(stanza, error)
36 local e = pubsub_errors[error];
37 local reply = st.error_reply(stanza, unpack(e, 1, 3));
39 reply:tag(e[4], { xmlns = xmlns_pubsub_errors }):up();
44 function handlers.get_items(origin, stanza, items)
45 local node = items.attr.node;
46 local item = items:get_child("item");
47 local id = item and item.attr.id;
49 local ok, results = service:get_items(node, stanza.attr.from, id);
51 return origin.send(pubsub_error_reply(stanza, results));
54 local data = st.stanza("items", { node = node });
55 for _, entry in pairs(results) do
56 data:add_child(entry);
59 reply = st.reply(stanza)
60 :tag("pubsub", { xmlns = xmlns_pubsub })
63 reply = pubsub_error_reply(stanza, "item-not-found");
65 return origin.send(reply);
68 function handlers.get_subscriptions(origin, stanza, subscriptions)
69 local node = subscriptions.attr.node;
70 local ok, ret = service:get_subscriptions(node, stanza.attr.from, stanza.attr.from);
72 return origin.send(pubsub_error_reply(stanza, ret));
74 local reply = st.reply(stanza)
75 :tag("pubsub", { xmlns = xmlns_pubsub })
76 :tag("subscriptions");
77 for _, sub in ipairs(ret) do
78 reply:tag("subscription", { node = sub.node, jid = sub.jid, subscription = 'subscribed' }):up();
80 return origin.send(reply);
83 function handlers.set_create(origin, stanza, create)
84 local node = create.attr.node;
87 ok, ret = service:create(node, stanza.attr.from);
89 reply = st.reply(stanza);
91 reply = pubsub_error_reply(stanza, ret);
95 node = uuid_generate();
96 ok, ret = service:create(node, stanza.attr.from);
97 until ok or ret ~= "conflict";
99 reply = st.reply(stanza)
100 :tag("pubsub", { xmlns = xmlns_pubsub })
101 :tag("create", { node = node });
103 reply = pubsub_error_reply(stanza, ret);
106 return origin.send(reply);
109 function handlers.set_subscribe(origin, stanza, subscribe)
110 local node, jid = subscribe.attr.node, subscribe.attr.jid;
111 if jid_bare(jid) ~= jid_bare(stanza.attr.from) then
112 return origin.send(pubsub_error_reply(stanza, "invalid-jid"));
114 local ok, ret = service:add_subscription(node, stanza.attr.from, jid);
117 reply = st.reply(stanza)
118 :tag("pubsub", { xmlns = xmlns_pubsub })
119 :tag("subscription", {
122 subscription = "subscribed"
125 reply = pubsub_error_reply(stanza, ret);
127 return origin.send(reply);
130 function handlers.set_unsubscribe(origin, stanza, unsubscribe)
131 local node, jid = unsubscribe.attr.node, unsubscribe.attr.jid;
132 if jid_bare(jid) ~= jid_bare(stanza.attr.from) then
133 return origin.send(pubsub_error_reply(stanza, "invalid-jid"));
135 local ok, ret = service:remove_subscription(node, stanza.attr.from, jid);
138 reply = st.reply(stanza);
140 reply = pubsub_error_reply(stanza, ret);
142 return origin.send(reply);
145 function handlers.set_publish(origin, stanza, publish)
146 local node = publish.attr.node;
147 local item = publish:get_child("item");
148 local id = (item and item.attr.id) or uuid_generate();
149 local ok, ret = service:publish(node, stanza.attr.from, id, item);
152 reply = st.reply(stanza)
153 :tag("pubsub", { xmlns = xmlns_pubsub })
154 :tag("publish", { node = node })
155 :tag("item", { id = id });
157 reply = pubsub_error_reply(stanza, ret);
159 return origin.send(reply);
162 function handlers.set_retract(origin, stanza, retract)
163 local node, notify = retract.attr.node, retract.attr.notify;
164 notify = (notify == "1") or (notify == "true");
165 local item = retract:get_child("item");
166 local id = item and item.attr.id
167 local reply, notifier;
169 notifier = st.stanza("retract", { id = id });
171 local ok, ret = service:retract(node, stanza.attr.from, id, notifier);
173 reply = st.reply(stanza);
175 reply = pubsub_error_reply(stanza, ret);
177 return origin.send(reply);
180 function simple_broadcast(node, jids, item)
181 item = st.clone(item);
182 item.attr.xmlns = nil; -- Clear the pubsub namespace
183 local message = st.message({ from = module.host, type = "headline" })
184 :tag("event", { xmlns = xmlns_pubsub_event })
185 :tag("items", { node = node })
187 for jid in pairs(jids) do
188 module:log("debug", "Sending notification to %s", jid);
189 message.attr.to = jid;
190 core_post_stanza(hosts[module.host], message);
194 module:hook("iq/host/http://jabber.org/protocol/pubsub:pubsub", handle_pubsub_iq);
198 local feature_map = {
199 create = { "create-nodes", autocreate_on_publish and "instant-nodes", "item-ids" };
200 retract = { "delete-items", "retract-items" };
201 publish = { "publish" };
202 get_items = { "retrieve-items" };
203 add_subscription = { "subscribe" };
204 get_subscriptions = { "retrieve-subscriptions" };
207 local function add_disco_features_from_service(disco, service)
208 for method, features in pairs(feature_map) do
209 if service[method] then
210 for _, feature in ipairs(features) do
212 disco:tag("feature", { var = xmlns_pubsub.."#"..feature }):up();
217 for affiliation in pairs(service.config.capabilities) do
218 if affiliation ~= "none" and affiliation ~= "owner" then
219 disco:tag("feature", { var = xmlns_pubsub.."#"..affiliation.."-affiliation" }):up();
224 local function build_disco_info(service)
225 local disco_info = st.stanza("query", { xmlns = "http://jabber.org/protocol/disco#info" })
226 :tag("identity", { category = "pubsub", type = "service" }):up()
227 :tag("feature", { var = "http://jabber.org/protocol/pubsub" }):up();
228 add_disco_features_from_service(disco_info, service);
232 module:hook("iq-get/host/http://jabber.org/protocol/disco#info:query", function (event)
233 local origin, stanza = event.origin, event.stanza;
234 local node = stanza.tags[1].attr.node;
236 return origin.send(st.reply(stanza):add_child(disco_info));
238 local ok, ret = service:get_nodes(stanza.attr.from);
239 if ok and not ret[node] then
240 ok, ret = false, "item-not-found";
243 return origin.send(pubsub_error_reply(stanza, ret));
245 local reply = st.reply(stanza)
246 :tag("query", { xmlns = "http://jabber.org/protocol/disco#info", node = node })
247 :tag("identity", { category = "pubsub", type = "leaf" });
248 return origin.send(reply);
252 local function handle_disco_items_on_node(event)
253 local stanza, origin = event.stanza, event.origin;
254 local query = stanza.tags[1];
255 local node = query.attr.node;
256 local ok, ret = service:get_items(node, stanza.attr.from);
258 return origin.send(pubsub_error_reply(stanza, ret));
261 local reply = st.reply(stanza)
262 :tag("query", { xmlns = "http://jabber.org/protocol/disco#items", node = node });
264 for id, item in pairs(ret) do
265 reply:tag("item", { jid = module.host, name = id }):up();
268 return origin.send(reply);
272 module:hook("iq-get/host/http://jabber.org/protocol/disco#items:query", function (event)
273 if event.stanza.tags[1].attr.node then
274 return handle_disco_items_on_node(event);
276 local ok, ret = service:get_nodes(event.stanza.attr.from);
278 event.origin.send(pubsub_error_reply(stanza, ret));
280 local reply = st.reply(event.stanza)
281 :tag("query", { xmlns = "http://jabber.org/protocol/disco#items" });
282 for node, node_obj in pairs(ret) do
283 reply:tag("item", { jid = module.host, node = node, name = node_obj.config.name }):up();
285 event.origin.send(reply);
290 local admin_aff = module:get_option_string("default_admin_affiliation", "owner");
291 local function get_affiliation(jid)
292 local bare_jid = jid_bare(jid);
293 if bare_jid == module.host or usermanager.is_admin(bare_jid, module.host) then
298 function set_service(new_service)
299 service = new_service;
300 module.environment.service = service;
301 disco_info = build_disco_info(service);
304 function module.save()
305 return { service = service };
308 function module.restore(data)
309 set_service(data.service);
312 set_service(pubsub.new({
322 get_subscription = true;
323 get_subscriptions = true;
326 subscribe_other = false;
327 unsubscribe_other = false;
328 get_subscription_other = false;
329 get_subscriptions_other = false;
331 be_subscribed = true;
332 be_unsubscribed = true;
334 set_affiliation = false;
344 get_subscription = true;
345 get_subscriptions = true;
349 subscribe_other = true;
350 unsubscribe_other = true;
351 get_subscription_other = true;
352 get_subscriptions_other = true;
354 be_subscribed = true;
355 be_unsubscribed = true;
357 set_affiliation = true;
361 autocreate_on_publish = autocreate_on_publish;
362 autocreate_on_subscribe = autocreate_on_subscribe;
364 broadcaster = simple_broadcast;
365 get_affiliation = get_affiliation;
367 normalize_jid = jid_bare;