Mercurial > prosody-modules

annotate mod_muc_limits/mod_muc_limits.lua @ 4168:7191d4638393

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_rest: Add packaging metadata to include jsonmap lib and examples
author Kim Alvefur <zash@zash.se>
date Mon, 05 Oct 2020 21:56:04 +0200
parents 2b10e51d85a6
children 731ba9400c10
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1057
0b41122b19f9 mod_muc_limits: Abort loading on non-MUC hosts (thanks Ge0rG)
Matthew Wild <mwild1@gmail.com>
parents: 1042
diff changeset
1
1768
163967467308 mod_muc_limits: Update to work with both the new and the old MUC API
Kim Alvefur <zash@zash.se>
parents: 1428
diff changeset
2 local mod_muc = module:depends"muc";
163967467308 mod_muc_limits: Update to work with both the new and the old MUC API
Kim Alvefur <zash@zash.se>
parents: 1428
diff changeset
3 local rooms = rawget(mod_muc, "rooms"); -- Old MUC API
554
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
4
1042
5fd0860c86cd mod_muc_limits: Allow stanzas from affiliated users even if they are not in the room
Matthew Wild <mwild1@gmail.com>
parents: 1040
diff changeset
5 local jid_split, jid_bare = require "util.jid".split, require "util.jid".bare;
554
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
6 local st = require "util.stanza";
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
7 local new_throttle = require "util.throttle".create;
1038
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
8 local t_insert, t_concat = table.insert, table.concat;
554
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
9
557
14f39769c9e0 mod_muc_limits: Echo any MUC <x> or <body> in the error reply (required to make Gajim display the error)
Matthew Wild <mwild1@gmail.com>
parents: 556
diff changeset
10 local xmlns_muc = "http://jabber.org/protocol/muc";
14f39769c9e0 mod_muc_limits: Echo any MUC <x> or <body> in the error reply (required to make Gajim display the error)
Matthew Wild <mwild1@gmail.com>
parents: 556
diff changeset
11
554
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
12 local period = math.max(module:get_option_number("muc_event_rate", 0.5), 0);
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
13 local burst = math.max(module:get_option_number("muc_burst_factor", 6), 1);
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
14
1036
a44e755f7579 mod_muc_limits: Add muc_max_nick_length option, defaulting to 23 (bytes)
Matthew Wild <mwild1@gmail.com>
parents: 1035
diff changeset
15 local max_nick_length = module:get_option_number("muc_max_nick_length", 23); -- Default chosen through scientific methods
3965
2b10e51d85a6 mod_muc_limits: Add config option to limit to join stanzas only
Matthew Wild <mwild1@gmail.com>
parents: 3964
diff changeset
16 local join_only = module:get_option_boolean("muc_limit_joins_only", false);
1038
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
17 local dropped_count = 0;
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
18 local dropped_jids;
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
19
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
20 local function log_dropped()
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
21 module:log("warn", "Dropped %d stanzas from %d JIDs: %s", dropped_count, #dropped_jids, t_concat(dropped_jids, ", "));
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
22 dropped_count = 0;
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
23 dropped_jids = nil;
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
24 end
1036
a44e755f7579 mod_muc_limits: Add muc_max_nick_length option, defaulting to 23 (bytes)
Matthew Wild <mwild1@gmail.com>
parents: 1035
diff changeset
25
554
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
26 local function handle_stanza(event)
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
27 local origin, stanza = event.origin, event.stanza;
555
2356ad05fdb6 mod_muc_limits: Don't limit room leaving
Matthew Wild <mwild1@gmail.com>
parents: 554
diff changeset
28 if stanza.name == "presence" and stanza.attr.type == "unavailable" then -- Don't limit room leaving
2356ad05fdb6 mod_muc_limits: Don't limit room leaving
Matthew Wild <mwild1@gmail.com>
parents: 554
diff changeset
29 return;
2356ad05fdb6 mod_muc_limits: Don't limit room leaving
Matthew Wild <mwild1@gmail.com>
parents: 554
diff changeset
30 end
1042
5fd0860c86cd mod_muc_limits: Allow stanzas from affiliated users even if they are not in the room
Matthew Wild <mwild1@gmail.com>
parents: 1040
diff changeset
31 local dest_room, dest_host, dest_nick = jid_split(stanza.attr.to);
3417
1534d0715d35 mod_muc_limits: Add support for new MUC API in Prosody 0.11
Kim Alvefur <zash@zash.se>
parents: 3402
diff changeset
32 local room = event.room or rooms[dest_room.."@"..dest_host];
554
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
33 if not room then return; end
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
34 local from_jid = stanza.attr.from;
3418
9be9dd434813 mod_muc_limits: Simplify bypass for affiliated users
Kim Alvefur <zash@zash.se>
parents: 3417
diff changeset
35 if room:get_affiliation(jid_bare(from_jid)) then
554
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
36 module:log("debug", "Skipping stanza from affiliated user...");
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
37 return;
1058
1255de347dd4 mod_muc_limits: Fix traceback on presence sent to the room's bare JID
Matthew Wild <mwild1@gmail.com>
parents: 1057
diff changeset
38 elseif dest_nick and max_nick_length and stanza.name == "presence" and not room._occupants[stanza.attr.to] and #dest_nick > max_nick_length then
1036
a44e755f7579 mod_muc_limits: Add muc_max_nick_length option, defaulting to 23 (bytes)
Matthew Wild <mwild1@gmail.com>
parents: 1035
diff changeset
39 module:log("debug", "Forbidding long (%d bytes) nick in %s", #dest_nick, dest_room)
a44e755f7579 mod_muc_limits: Add muc_max_nick_length option, defaulting to 23 (bytes)
Matthew Wild <mwild1@gmail.com>
parents: 1035
diff changeset
40 origin.send(st.error_reply(stanza, "modify", "policy-violation", "Your nick name is too long, please use a shorter one")
a44e755f7579 mod_muc_limits: Add muc_max_nick_length option, defaulting to 23 (bytes)
Matthew Wild <mwild1@gmail.com>
parents: 1035
diff changeset
41 :up():tag("x", { xmlns = xmlns_muc }));
a44e755f7579 mod_muc_limits: Add muc_max_nick_length option, defaulting to 23 (bytes)
Matthew Wild <mwild1@gmail.com>
parents: 1035
diff changeset
42 return true;
554
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
43 end
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
44 local throttle = room.throttle;
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
45 if not room.throttle then
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
46 throttle = new_throttle(period*burst, burst);
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
47 room.throttle = throttle;
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
48 end
3188
5c3f3f5a4377 Backed out parts of changeset a81456a13797
Kim Alvefur <zash@zash.se>
parents: 3098
diff changeset
49 if not throttle:poll(1) then
1038
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
50 module:log("debug", "Dropping stanza for %s@%s from %s, over rate limit", dest_room, dest_host, from_jid);
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
51 if not dropped_jids then
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
52 dropped_jids = { [from_jid] = true, from_jid };
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
53 module:add_timer(5, log_dropped);
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
54 elseif not dropped_jids[from_jid] then
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
55 dropped_jids[from_jid] = true;
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
56 t_insert(dropped_jids, from_jid);
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
57 end
edb06824a5a4 mod_muc_limits: Condense multiple dropped stanzas into a single log message every 5 seconds
Matthew Wild <mwild1@gmail.com>
parents: 1036
diff changeset
58 dropped_count = dropped_count + 1;
1205
7d2d440e2fa5 mod_muc_limits: Just drop error stanzas instead of bouncing them with more error stanzas
Kim Alvefur <zash@zash.se>
parents: 1058
diff changeset
59 if stanza.attr.type == "error" then -- We don't want to bounce errors
7d2d440e2fa5 mod_muc_limits: Just drop error stanzas instead of bouncing them with more error stanzas
Kim Alvefur <zash@zash.se>
parents: 1058
diff changeset
60 return true;
7d2d440e2fa5 mod_muc_limits: Just drop error stanzas instead of bouncing them with more error stanzas
Kim Alvefur <zash@zash.se>
parents: 1058
diff changeset
61 end
557
14f39769c9e0 mod_muc_limits: Echo any MUC <x> or <body> in the error reply (required to make Gajim display the error)
Matthew Wild <mwild1@gmail.com>
parents: 556
diff changeset
62 local reply = st.error_reply(stanza, "wait", "policy-violation", "The room is currently overactive, please try again later");
14f39769c9e0 mod_muc_limits: Echo any MUC <x> or <body> in the error reply (required to make Gajim display the error)
Matthew Wild <mwild1@gmail.com>
parents: 556
diff changeset
63 local body = stanza:get_child_text("body");
14f39769c9e0 mod_muc_limits: Echo any MUC <x> or <body> in the error reply (required to make Gajim display the error)
Matthew Wild <mwild1@gmail.com>
parents: 556
diff changeset
64 if body then
14f39769c9e0 mod_muc_limits: Echo any MUC <x> or <body> in the error reply (required to make Gajim display the error)
Matthew Wild <mwild1@gmail.com>
parents: 556
diff changeset
65 reply:up():tag("body"):text(body):up();
14f39769c9e0 mod_muc_limits: Echo any MUC <x> or <body> in the error reply (required to make Gajim display the error)
Matthew Wild <mwild1@gmail.com>
parents: 556
diff changeset
66 end
14f39769c9e0 mod_muc_limits: Echo any MUC <x> or <body> in the error reply (required to make Gajim display the error)
Matthew Wild <mwild1@gmail.com>
parents: 556
diff changeset
67 local x = stanza:get_child("x", xmlns_muc);
14f39769c9e0 mod_muc_limits: Echo any MUC <x> or <body> in the error reply (required to make Gajim display the error)
Matthew Wild <mwild1@gmail.com>
parents: 556
diff changeset
68 if x then
14f39769c9e0 mod_muc_limits: Echo any MUC <x> or <body> in the error reply (required to make Gajim display the error)
Matthew Wild <mwild1@gmail.com>
parents: 556
diff changeset
69 reply:add_child(st.clone(x));
14f39769c9e0 mod_muc_limits: Echo any MUC <x> or <body> in the error reply (required to make Gajim display the error)
Matthew Wild <mwild1@gmail.com>
parents: 556
diff changeset
70 end
14f39769c9e0 mod_muc_limits: Echo any MUC <x> or <body> in the error reply (required to make Gajim display the error)
Matthew Wild <mwild1@gmail.com>
parents: 556
diff changeset
71 origin.send(reply);
554
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
72 return true;
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
73 end
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
74 end
a2b0174b5c48 mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
75
3449
5e91a34b1e71 mod_muc_limits: Fix being unload on trunk
Kim Alvefur <zash@zash.se>
parents: 3418
diff changeset
76 if rooms then
5e91a34b1e71 mod_muc_limits: Fix being unload on trunk
Kim Alvefur <zash@zash.se>
parents: 3418
diff changeset
77 function module.unload()
3964
15355caf4553 mod_muc_limits: Add [luacheck] annotation to silence unused loop variable warning
Matthew Wild <mwild1@gmail.com>
parents: 3449
diff changeset
78 for room_jid, room in pairs(rooms) do --luacheck: ignore 213/room_jid
3449
5e91a34b1e71 mod_muc_limits: Fix being unload on trunk
Kim Alvefur <zash@zash.se>
parents: 3418
diff changeset
79 room.throttle = nil;
5e91a34b1e71 mod_muc_limits: Fix being unload on trunk
Kim Alvefur <zash@zash.se>
parents: 3418
diff changeset
80 end
556
e50bdbaa7802 mod_muc_limits: Remove throttle object from all rooms on unload (to make sure new settings are applied on reload)
Matthew Wild <mwild1@gmail.com>
parents: 555
diff changeset
81 end
e50bdbaa7802 mod_muc_limits: Remove throttle object from all rooms on unload (to make sure new settings are applied on reload)
Matthew Wild <mwild1@gmail.com>
parents: 555
diff changeset
82
3417
1534d0715d35 mod_muc_limits: Add support for new MUC API in Prosody 0.11
Kim Alvefur <zash@zash.se>
parents: 3402
diff changeset
83 module:hook("presence/full", handle_stanza, 501);
3965
2b10e51d85a6 mod_muc_limits: Add config option to limit to join stanzas only
Matthew Wild <mwild1@gmail.com>
parents: 3964
diff changeset
84 if not join_only then
2b10e51d85a6 mod_muc_limits: Add config option to limit to join stanzas only
Matthew Wild <mwild1@gmail.com>
parents: 3964
diff changeset
85 module:hook("message/bare", handle_stanza, 501);
2b10e51d85a6 mod_muc_limits: Add config option to limit to join stanzas only
Matthew Wild <mwild1@gmail.com>
parents: 3964
diff changeset
86 module:hook("message/full", handle_stanza, 501);
2b10e51d85a6 mod_muc_limits: Add config option to limit to join stanzas only
Matthew Wild <mwild1@gmail.com>
parents: 3964
diff changeset
87 module:hook("presence/bare", handle_stanza, 501);
2b10e51d85a6 mod_muc_limits: Add config option to limit to join stanzas only
Matthew Wild <mwild1@gmail.com>
parents: 3964
diff changeset
88 end
3417
1534d0715d35 mod_muc_limits: Add support for new MUC API in Prosody 0.11
Kim Alvefur <zash@zash.se>
parents: 3402
diff changeset
89 else
1534d0715d35 mod_muc_limits: Add support for new MUC API in Prosody 0.11
Kim Alvefur <zash@zash.se>
parents: 3402
diff changeset
90 module:hook("muc-occupant-pre-join", handle_stanza);
3965
2b10e51d85a6 mod_muc_limits: Add config option to limit to join stanzas only
Matthew Wild <mwild1@gmail.com>
parents: 3964
diff changeset
91 if not join_only then
2b10e51d85a6 mod_muc_limits: Add config option to limit to join stanzas only
Matthew Wild <mwild1@gmail.com>
parents: 3964
diff changeset
92 module:hook("muc-occupant-pre-change", handle_stanza);
2b10e51d85a6 mod_muc_limits: Add config option to limit to join stanzas only
Matthew Wild <mwild1@gmail.com>
parents: 3964
diff changeset
93 module:hook("muc-occupant-groupchat", handle_stanza);
2b10e51d85a6 mod_muc_limits: Add config option to limit to join stanzas only
Matthew Wild <mwild1@gmail.com>
parents: 3964
diff changeset
94 end
3417
1534d0715d35 mod_muc_limits: Add support for new MUC API in Prosody 0.11
Kim Alvefur <zash@zash.se>
parents: 3402
diff changeset
95 end