aboutsummaryrefslogtreecommitdiffstats
path: root/plugins/mod_pubsub/mod_pubsub.lua
blob: 80b1dbaea296e8a450d6b26263d18c7df677bb2a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
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)
	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 message = st.message({ from = module.host, type = "headline", id = id })
		:tag("event", { xmlns = xmlns_pubsub_event })
			:tag(kind, { node = node })
				:add_child(item);
	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