aboutsummaryrefslogtreecommitdiffstats
path: root/plugins/muc/mod_muc.lua
blob: 15949c1b9783977cf5a113f04d222c06028b03fd (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
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--

if module:get_host_type() ~= "component" then
	error("MUC should be loaded as a component, please see http://prosody.im/doc/components", 0);
end

local muclib = module:require "muc";
room_mt = muclib.room_mt; -- Yes, global.
local iterators = require "util.iterators";
local jid_split = require "util.jid".split;
local jid_bare = require "util.jid".bare;
local st = require "util.stanza";
local um_is_admin = require "core.usermanager".is_admin;

local rooms = module:shared "rooms";

module:depends("disco");
module:add_identity("conference", "text", module:get_option_string("name", "Prosody Chatrooms"));
module:add_feature("http://jabber.org/protocol/muc");
module:depends "muc_unique"
module:require "muc/lock";

local function is_admin(jid)
	return um_is_admin(jid, module.host);
end

do -- Monkey patch to make server admins room owners
	local _get_affiliation = room_mt.get_affiliation;
	function room_mt:get_affiliation(jid)
		if is_admin(jid) then return "owner"; end
		return _get_affiliation(self, jid);
	end

	local _set_affiliation = room_mt.set_affiliation;
	function room_mt:set_affiliation(actor, jid, ...)
		if is_admin(jid) then return nil, "modify", "not-acceptable"; end
		return _set_affiliation(self, actor, jid, ...);
	end
end

function track_room(room)
	rooms[room.jid] = room;
end

function forget_room(jid)
	rooms[jid] = nil;
end

function get_room_from_jid(room_jid)
	return rooms[room_jid]
end

function each_room()
	return iterators.values(rooms);
end

do -- Persistent rooms
	local persistent = module:require "muc/persistent";
	local persistent_rooms_storage = module:open_store("persistent");
	local persistent_rooms = persistent_rooms_storage:get() or {};
	local room_configs = module:open_store("config");

	local function room_save(room, forced)
		local node = jid_split(room.jid);
		local is_persistent = persistent.get(room);
		persistent_rooms[room.jid] = is_persistent;
		if is_persistent then
			local history = room._data.history;
			room._data.history = nil;
			local data = {
				jid = room.jid;
				_data = room._data;
				_affiliations = room._affiliations;
			};
			room_configs:set(node, data);
			room._data.history = history;
		elseif forced then
			room_configs:set(node, nil);
			if not next(room._occupants) then -- Room empty
				rooms[room.jid] = nil;
			end
		end
		if forced then persistent_rooms_storage:set(nil, persistent_rooms); end
	end

	-- When room is created, over-ride 'save' method
	module:hook("muc-room-pre-create", function(event)
		event.room.save = room_save;
	end, 1000);

	-- Automatically destroy empty non-persistent rooms
	module:hook("muc-occupant-left",function(event)
		local room = event.room
		if not room:has_occupant() and not persistent.get(room) then -- empty, non-persistent room
			module:fire_event("muc-room-destroyed", { room = room });
		end
	end);

	local persistent_errors = false;
	for jid in pairs(persistent_rooms) do
		local node = jid_split(jid);
		local data = room_configs:get(node);
		if data then
			local room = muclib.new_room(jid);
			room._data = data._data;
			room._affiliations = data._affiliations;
			track_room(room);
		else -- missing room data
			persistent_rooms[jid] = nil;
			module:log("error", "Missing data for room '%s', removing from persistent room list", jid);
			persistent_errors = true;
		end
	end
	if persistent_errors then persistent_rooms_storage:set(nil, persistent_rooms); end
end

module:hook("host-disco-items", function(event)
	local reply = event.reply;
	module:log("debug", "host-disco-items called");
	for room in each_room() do
		if not room:get_hidden() then
			reply:tag("item", {jid=room.jid, name=room:get_name()}):up();
		end
	end
end);

module:hook("muc-room-pre-create", function(event)
	track_room(event.room);
end, -1000);

module:hook("muc-room-destroyed",function(event)
	local room = event.room
	forget_room(room.jid)
end)

do
	local restrict_room_creation = module:get_option("restrict_room_creation");
	if restrict_room_creation == true then
		restrict_room_creation = "admin";
	end
	if restrict_room_creation then
		local host_suffix = module.host:gsub("^[^%.]+%.", "");
		module:hook("muc-room-pre-create", function(event)
			local origin, stanza = event.origin, event.stanza;
			local user_jid = stanza.attr.from;
			if not is_admin(user_jid) and not (
				restrict_room_creation == "local" and
				select(2, jid_split(user_jid)) == host_suffix
			) then
				origin.send(st.error_reply(stanza, "cancel", "not-allowed"));
				return true;
			end
		end);
	end
end

for event_name, method in pairs {
	-- Normal room interactions
	["iq-get/bare/http://jabber.org/protocol/disco#info:query"] = "handle_disco_info_get_query" ;
	["iq-get/bare/http://jabber.org/protocol/disco#items:query"] = "handle_disco_items_get_query" ;
	["iq-set/bare/http://jabber.org/protocol/muc#admin:query"] = "handle_admin_query_set_command" ;
	["iq-get/bare/http://jabber.org/protocol/muc#admin:query"] = "handle_admin_query_get_command" ;
	["iq-set/bare/http://jabber.org/protocol/muc#owner:query"] = "handle_owner_query_set_to_room" ;
	["iq-get/bare/http://jabber.org/protocol/muc#owner:query"] = "handle_owner_query_get_to_room" ;
	["message/bare"] = "handle_message_to_room" ;
	["presence/bare"] = "handle_presence_to_room" ;
	-- Host room
	["iq-get/host/http://jabber.org/protocol/disco#info:query"] = "handle_disco_info_get_query" ;
	["iq-get/host/http://jabber.org/protocol/disco#items:query"] = "handle_disco_items_get_query" ;
	["iq-set/host/http://jabber.org/protocol/muc#admin:query"] = "handle_admin_query_set_command" ;
	["iq-get/host/http://jabber.org/protocol/muc#admin:query"] = "handle_admin_query_get_command" ;
	["iq-set/host/http://jabber.org/protocol/muc#owner:query"] = "handle_owner_query_set_to_room" ;
	["iq-get/host/http://jabber.org/protocol/muc#owner:query"] = "handle_owner_query_get_to_room" ;
	["message/host"] = "handle_message_to_room" ;
	["presence/host"] = "handle_presence_to_room" ;
	-- Direct to occupant (normal rooms and host room)
	["presence/full"] = "handle_presence_to_occupant" ;
	["iq/full"] = "handle_iq_to_occupant" ;
	["message/full"] = "handle_message_to_occupant" ;
} do
	module:hook(event_name, function (event)
		local origin, stanza = event.origin, event.stanza;
		local room_jid = jid_bare(stanza.attr.to);
		local room = get_room_from_jid(room_jid);
		if room == nil then
			-- Watch presence to create rooms
			if stanza.attr.type == nil and stanza.name == "presence" then
				room = muclib.new_room(room_jid);
			else
				origin.send(st.error_reply(stanza, "cancel", "not-allowed"));
				return true;
			end
		end
		return room[method](room, origin, stanza);
	end, -2)
end

function shutdown_component()
	local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user"})
		:tag("status", { code = "332"}):up();
	for room in each_room() do
		room:clear(x);
	end
end
module:hook_global("server-stopping", shutdown_component);

do -- Ad-hoc commands
	module:depends "adhoc";
	local t_concat = table.concat;
	local adhoc_new = module:require "adhoc".new;
	local adhoc_initial = require "util.adhoc".new_initial_data_form;
	local array = require "util.array";
	local dataforms_new = require "util.dataforms".new;

	local destroy_rooms_layout = dataforms_new {
		title = "Destroy rooms";
		instructions = "Select the rooms to destroy";

		{ name = "FORM_TYPE", type = "hidden", value = "http://prosody.im/protocol/muc#destroy" };
		{ name = "rooms", type = "list-multi", required = true, label = "Rooms to destroy:"};
	};

	local destroy_rooms_handler = adhoc_initial(destroy_rooms_layout, function()
		return { rooms = array.collect(each_room):pluck("jid"):sort(); };
	end, function(fields, errors)
		if errors then
			local errmsg = {};
			for name, err in pairs(errors) do
				errmsg[#errmsg + 1] = name .. ": " .. err;
			end
			return { status = "completed", error = { message = t_concat(errmsg, "\n") } };
		end
		for _, room in ipairs(fields.rooms) do
			get_room_from_jid(room):destroy();
		end
		return { status = "completed", info = "The following rooms were destroyed:\n"..t_concat(fields.rooms, "\n") };
	end);
	local destroy_rooms_desc = adhoc_new("Destroy Rooms", "http://prosody.im/protocol/muc#destroy", destroy_rooms_handler, "admin");

	module:provides("adhoc", destroy_rooms_desc);
end