Mercurial > prosody-modules

annotate mod_muc_rai/mod_muc_rai.lua @ 5564:731ba9400c10

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mod_muc_limits: Raise cost for multi-line messages
author Kim Alvefur <zash@zash.se>
date Sat, 24 Jun 2023 23:51:31 +0200
parents 9377b5593cc7
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 local cache = require "util.cache";
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2 local jid = require "util.jid";
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3 local st = require "util.stanza";
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4
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5 local max_subscribers = module:get_option_number("muc_rai_max_subscribers", 1024);
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6
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7 local muc_affiliation_store = module:open_store("config", "map");
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8 local muc_archive = module:open_store("muc_log", "archive");
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9
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10 local xmlns_rai = "urn:xmpp:rai:0";
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11
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12 local muc_markers = module:depends("muc_markers");
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13
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14 -- subscriber_jid -> { [room_jid] = interested }
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15 local subscribed_users = cache.new(max_subscribers, false);
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16 -- room_jid -> { [user_jid] = interested }
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17 local interested_users = {};
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18 -- room_jid -> last_id
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19 local room_activity_cache = cache.new(1024);
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20
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21 -- Send a single notification for a room, updating data structures as needed
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22 local function send_single_notification(user_jid, room_jid)
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23 local notification = st.message({ to = user_jid, from = module.host })
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24 :tag("rai", { xmlns = xmlns_rai })
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25 :text_tag("activity", room_jid)
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26 :up();
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27 local interested_room_users = interested_users[room_jid];
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28 if interested_room_users then
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29 interested_room_users[user_jid] = nil;
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30 end
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31 local interested_rooms = subscribed_users:get(user_jid);
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32 if interested_rooms then
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33 interested_rooms[room_jid] = nil;
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34 end
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35 module:log("debug", "Sending notification from %s to %s", room_jid, user_jid);
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36 return module:send(notification);
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37 end
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38
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39 local function subscribe_room(user_jid, room_jid)
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40 local interested_rooms = subscribed_users:get(user_jid);
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41 if not interested_rooms then
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42 return nil, "not-subscribed";
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43 end
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44 module:log("debug", "Subscribed %s to %s", user_jid, room_jid);
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45 interested_rooms[room_jid] = true;
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46
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47 local interested_room_users = interested_users[room_jid];
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48 if not interested_room_users then
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49 interested_room_users = {};
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50 interested_users[room_jid] = interested_room_users;
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51 end
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52 interested_room_users[user_jid] = true;
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53 return true;
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54 end
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55
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56 local function unsubscribe_room(user_jid, room_jid)
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57 local interested_rooms = subscribed_users:get(user_jid);
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58 if not interested_rooms then
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59 return nil, "not-subscribed";
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60 end
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61 interested_rooms[room_jid] = nil;
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62
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63 local interested_room_users = interested_users[room_jid];
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64 if not interested_room_users then
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65 return true;
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66 end
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67 interested_room_users[user_jid] = nil;
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68 return true;
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69 end
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70
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71 local function notify_interested_users(room_jid)
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72 module:log("warn", "NOTIFYING FOR %s", room_jid)
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73 local interested_room_users = interested_users[room_jid];
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74 if not interested_room_users then
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75 module:log("debug", "Nobody interested in %s", room_jid);
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76 return;
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77 end
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78 for user_jid in pairs(interested_room_users) do
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79 send_single_notification(user_jid, room_jid);
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80 end
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81 return true;
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82 end
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83
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84 local function unsubscribe_user_from_all_rooms(user_jid)
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85 local interested_rooms = subscribed_users:get(user_jid);
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86 if not interested_rooms then
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87 return nil, "not-subscribed";
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88 end
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89 for room_jid in pairs(interested_rooms) do
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90 unsubscribe_room(user_jid, room_jid);
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91 end
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92 return true;
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93 end
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94
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95 local function get_last_room_message_id(room_jid)
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96 local last_room_message_id = room_activity_cache:get(room_jid);
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97 if last_room_message_id then
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98 module:log("debug", "Last room message: %s (cached)", last_room_message_id);
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99 return last_room_message_id;
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100 end
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101
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102 -- Load all the data!
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103 local query = {
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104 limit = 1;
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105 reverse = true;
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106 with = "message<groupchat";
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107 }
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108 local data, err = muc_archive:find(jid.node(room_jid), query);
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109
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110 if not data then
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111 module:log("error", "Could not fetch history: %s", err);
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112 return nil;
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113 end
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114
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115 local id = data();
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116 room_activity_cache:set(room_jid, id);
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117 module:log("debug", "Last room message: %s (queried)", id);
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118 return id;
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119 end
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120
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121 local function update_room_activity(room_jid, last_id)
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122 room_activity_cache:set(room_jid, last_id);
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123 end
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124
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125 local function get_last_user_read_id(user_jid, room_jid)
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126 return muc_markers.get_user_read_marker(jid.bare(user_jid), room_jid);
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127 end
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128
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129 local function has_new_activity(room_jid, user_jid)
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130 local last_room_message_id = get_last_room_message_id(room_jid);
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131 local last_user_read_id = get_last_user_read_id(user_jid, room_jid);
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132 module:log("debug", "Checking activity in <%s> (%s) for <%s> (%s): %s",
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diff changeset
133 room_jid, last_room_message_id,
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parents: 4059
diff changeset
134 user_jid, last_user_read_id,
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parents: 4059
diff changeset
135 tostring(last_room_message_id ~= last_user_read_id)
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diff changeset
136 );
3974
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diff changeset
137 return last_room_message_id ~= last_user_read_id;
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
138 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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diff changeset
139
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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140 -- Returns a set of rooms that a user is interested in
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
141 local function get_interested_rooms(user_jid)
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142 -- Use affiliation as an indication of interest, return
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diff changeset
143 -- all rooms a user is affiliated
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diff changeset
144 return muc_affiliation_store:get_all(jid.bare(user_jid));
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
145 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
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diff changeset
146
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diff changeset
147 local function is_subscribed(user_jid)
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diff changeset
148 return not not subscribed_users:get(user_jid);
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diff changeset
149 end
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diff changeset
150
3974
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151 -- Subscribes to all rooms that the user has an interest in
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152 -- Returns a set of room JIDs that have already had activity (thus no subscription)
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153 local function subscribe_all_rooms(user_jid)
3998
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diff changeset
154 if is_subscribed(user_jid) then
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diff changeset
155 return nil;
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parents: 3997
diff changeset
156 end
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parents: 3997
diff changeset
157
3974
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158 -- Send activity notifications for all relevant rooms
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diff changeset
159 local interested_rooms, err = get_interested_rooms(user_jid);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
160
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
161 if not interested_rooms then
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parents:
diff changeset
162 if err then
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parents:
diff changeset
163 return nil, "internal-server-error";
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
164 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
165 interested_rooms = {};
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parents:
diff changeset
166 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
167
4058
cf9a1c7d558d mod_muc_rai: Don't store/modify existing table to track rooms
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parents: 4057
diff changeset
168 if not subscribed_users:set(user_jid, {}) then
3974
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diff changeset
169 module:log("warn", "Subscriber limit (%d) reached, rejecting subscription from %s", max_subscribers, user_jid);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
170 return nil, "resource-constraint";
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
171 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
172
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parents:
diff changeset
173 local rooms_with_activity;
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parents:
diff changeset
174 for room_name in pairs(interested_rooms) do
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diff changeset
175 local room_jid = room_name.."@"..module.host;
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
176 if has_new_activity(room_jid, user_jid) then
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parents:
diff changeset
177 -- There has already been activity, include this room
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
178 -- in the response
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
179 if not rooms_with_activity then
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parents:
diff changeset
180 rooms_with_activity = {};
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parents:
diff changeset
181 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
182 rooms_with_activity[room_jid] = true;
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
183 else
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
184 -- Subscribe to any future activity
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
185 subscribe_room(user_jid, room_jid);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
186 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
187 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
188 return rooms_with_activity;
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
189 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
190
4510
6690586826e8 mod_muc_rai: Switch to low-priority pre-* events, which should suffice for per-session tracking
Matthew Wild <mwild1@gmail.com>
parents: 4335
diff changeset
191 module:hook("muc-occupant-pre-join", function(event)
4277
10dc4527574f mod_muc_rai: Subscribe/unsubscribe users when leaving/joining
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parents: 4074
diff changeset
192 local room_jid, user_jid = event.room.jid, event.stanza.attr.from;
4297
4a5c4a352b78 mod_muc_rai: Use xmlns from XEP-0437
JC Brand <jc@opkode.com>
parents: 4281
diff changeset
193 local ok, _ = unsubscribe_room(user_jid, room_jid);
4277
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parents: 4074
diff changeset
194 if ok then
4281
3c80e46e26f2 mod_muc_rai: Use log systems string formatting facilities
Kim Alvefur <zash@zash.se>
parents: 4277
diff changeset
195 module:log("debug", "Unsubscribed %s to %s Reason: muc-occupant-joined", user_jid, room_jid)
4277
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Seve Ferrer <seve@delape.net>
parents: 4074
diff changeset
196 end
4510
6690586826e8 mod_muc_rai: Switch to low-priority pre-* events, which should suffice for per-session tracking
Matthew Wild <mwild1@gmail.com>
parents: 4335
diff changeset
197 end, -500);
4277
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parents: 4074
diff changeset
198
4510
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parents: 4335
diff changeset
199 module:hook("muc-occupant-pre-leave", function(event)
6690586826e8 mod_muc_rai: Switch to low-priority pre-* events, which should suffice for per-session tracking
Matthew Wild <mwild1@gmail.com>
parents: 4335
diff changeset
200 local room_jid, user_jid = event.room.jid, event.stanza.attr.from;
4297
4a5c4a352b78 mod_muc_rai: Use xmlns from XEP-0437
JC Brand <jc@opkode.com>
parents: 4281
diff changeset
201 local ok, _ = subscribe_room(user_jid, room_jid);
4277
10dc4527574f mod_muc_rai: Subscribe/unsubscribe users when leaving/joining
Seve Ferrer <seve@delape.net>
parents: 4074
diff changeset
202 if ok then
4281
3c80e46e26f2 mod_muc_rai: Use log systems string formatting facilities
Kim Alvefur <zash@zash.se>
parents: 4277
diff changeset
203 module:log("debug", "Subscribed %s to %s Reason: muc-occupant-left", user_jid, room_jid)
4277
10dc4527574f mod_muc_rai: Subscribe/unsubscribe users when leaving/joining
Seve Ferrer <seve@delape.net>
parents: 4074
diff changeset
204 end
4510
6690586826e8 mod_muc_rai: Switch to low-priority pre-* events, which should suffice for per-session tracking
Matthew Wild <mwild1@gmail.com>
parents: 4335
diff changeset
205 end, -500);
4277
10dc4527574f mod_muc_rai: Subscribe/unsubscribe users when leaving/joining
Seve Ferrer <seve@delape.net>
parents: 4074
diff changeset
206
3974
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parents:
diff changeset
207 module:hook("presence/host", function (event)
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
208 local origin, stanza = event.origin, event.stanza;
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
209 local user_jid = stanza.attr.from;
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
210
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
211 if stanza.attr.type == "unavailable" then -- User going offline
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
212 unsubscribe_user_from_all_rooms(user_jid);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
213 return true;
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
214 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
215
4074
4b84beb48ba0 mod_muc_rai: Ignore presence to host that doesn't contain the <rai/> element
Matthew Wild <mwild1@gmail.com>
parents: 4060
diff changeset
216 if not stanza:get_child("rai", xmlns_rai) then
4b84beb48ba0 mod_muc_rai: Ignore presence to host that doesn't contain the <rai/> element
Matthew Wild <mwild1@gmail.com>
parents: 4060
diff changeset
217 return; -- Ignore, no <rai/> tag
4b84beb48ba0 mod_muc_rai: Ignore presence to host that doesn't contain the <rai/> element
Matthew Wild <mwild1@gmail.com>
parents: 4060
diff changeset
218 end
4b84beb48ba0 mod_muc_rai: Ignore presence to host that doesn't contain the <rai/> element
Matthew Wild <mwild1@gmail.com>
parents: 4060
diff changeset
219
3974
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parents:
diff changeset
220 local rooms_with_activity, err = subscribe_all_rooms(user_jid);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
221
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
222 if not rooms_with_activity then
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
223 if not err then
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
224 module:log("debug", "No activity to notify");
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
225 return true;
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
226 else
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
227 return origin.send(st.error_reply(stanza, "wait", "resource-constraint"));
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
228 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
229 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
230
3997
0e72dd70afff mod_muc_rai: Use correct stanza kind (message) for initial notification
Matthew Wild <mwild1@gmail.com>
parents: 3974
diff changeset
231 local reply = st.message({ to = stanza.attr.from, from = module.host })
3974
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
232 :tag("rai", { xmlns = xmlns_rai });
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
233 for room_jid in pairs(rooms_with_activity) do
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
234 reply:text_tag("activity", room_jid);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
235 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
236 return origin.send(reply);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
237 end);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
238
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
239 module:hook("muc-broadcast-message", function (event)
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
240 local room, stanza = event.room, event.stanza;
4059
072366857d79 mod_muc_rai: Fix to correctly extract the archive id
Matthew Wild <mwild1@gmail.com>
parents: 4058
diff changeset
241 local archive_id = stanza:get_child("stanza-id", "urn:xmpp:sid:0");
072366857d79 mod_muc_rai: Fix to correctly extract the archive id
Matthew Wild <mwild1@gmail.com>
parents: 4058
diff changeset
242 if archive_id and archive_id.attr.id then
3974
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
243 -- Remember the id of the last message so we can compare it
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
244 -- to the per-user marker (managed by mod_muc_markers)
4059
072366857d79 mod_muc_rai: Fix to correctly extract the archive id
Matthew Wild <mwild1@gmail.com>
parents: 4058
diff changeset
245 update_room_activity(room.jid, archive_id.attr.id);
3974
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
246 -- Notify any users that need to be notified
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
247 notify_interested_users(room.jid);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
248 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
249 end, -1);