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
219
220
221
|
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 storagemanager = require "core.storagemanager";
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 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
-- An itemstore supports the following methods:
-- items(): iterator over (id, item)
-- get(id): return item with id
-- set(id, item): set id to item
-- clear(): clear all items
-- resize(n): set new limit and trim oldest items
-- tail(): return the latest item
-- A nodestore supports the following methods:
-- set(node_name, node_data)
-- get(node_name)
-- users(): iterator over (node_name)
local max_max_items = module:get_option_number("pubsub_max_items", 256);
local function tonumber_max_items(n)
if n == "max" then
return max_max_items;
end
return tonumber(n);
end
local node_store = module:open_store(module.name.."_nodes");
local function create_simple_itemstore(node_config, node_name) --> util.cache like object
local driver = storagemanager.get_driver(module.host, "pubsub_data");
local archive = driver:open("pubsub_"..node_name, "archive");
local max_items = tonumber_max_items(node_config["max_items"]);
return lib_pubsub.archive_itemstore(archive, max_items, nil, node_name);
end
function simple_broadcast(kind, node, jids, item, actor, node_obj, service) --luacheck: ignore 431/service
if node_obj then
if node_obj.config["notify_"..kind] == false then
return;
end
end
if kind == "retract" then
kind = "items"; -- XEP-0060 signals retraction in an <items> container
end
if item then
item = st.clone(item);
item.attr.xmlns = nil; -- Clear the pubsub namespace
if kind == "items" then
if node_obj and node_obj.config.include_payload == false then
item:maptags(function () return nil; end);
end
if not expose_publisher then
item.attr.publisher = nil;
elseif not item.attr.publisher then
item.attr.publisher = service.config.normalize_jid(actor);
end
end
end
local id = new_id();
local msg_type = node_obj and node_obj.config.notification_type or "headline";
local message = st.message({ from = module.host, type = msg_type, id = id })
:tag("event", { xmlns = xmlns_pubsub_event })
:tag(kind, { node = node });
if item then
message:add_child(item);
end
local summary;
if item and item.tags[1] then
local payload = item.tags[1];
summary = module:fire_event("pubsub-summary/"..payload.attr.xmlns, {
kind = kind, node = node, jids = jids, actor = actor, item = item, payload = payload,
});
end
for jid, options in pairs(jids) do
local new_stanza = st.clone(message);
if summary and type(options) == "table" and options["pubsub#include_body"] then
new_stanza:body(summary);
end
new_stanza.attr.to = jid;
module:send(new_stanza);
end
end
function check_node_config(node, actor, new_config) -- luacheck: ignore 212/node 212/actor
if (tonumber_max_items(new_config["max_items"]) or 1) > max_max_items then
return false;
end
if new_config["access_model"] ~= "whitelist"
and new_config["access_model"] ~= "open" then
return false;
end
return true;
end
function is_item_stanza(item)
return st.is_stanza(item) and item.attr.xmlns == xmlns_pubsub and item.name == "item" and #item.tags == 1;
end
-- Compose a textual representation of Atom payloads
module:hook("pubsub-summary/http://www.w3.org/2005/Atom", function (event)
local payload = event.payload;
local title = payload:get_child_text("title");
local summary = payload:get_child_text("summary");
if not summary and title then
local author = payload:find("author/name#");
summary = title;
if author then
summary = author .. " posted " .. summary;
end
end
return summary;
end, -1);
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)
return lib_pubsub.handle_disco_info_node(event, service);
end);
module:hook("host-disco-items-node", function (event)
return lib_pubsub.handle_disco_items_node(event, service);
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.title }):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 get_service()
return service;
end
function set_service(new_service)
service = new_service;
service.config.autocreate_on_publish = autocreate_on_publish;
service.config.autocreate_on_subscribe = autocreate_on_subscribe;
service.config.expose_publisher = expose_publisher;
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({
autocreate_on_publish = autocreate_on_publish;
autocreate_on_subscribe = autocreate_on_subscribe;
expose_publisher = expose_publisher;
node_defaults = {
["persist_items"] = true;
};
nodestore = node_store;
itemstore = create_simple_itemstore;
broadcaster = simple_broadcast;
itemcheck = is_item_stanza;
check_node_config = check_node_config;
get_affiliation = get_affiliation;
normalize_jid = jid_bare;
}));
end
|
