Mercurial > prosody-modules

annotate mod_muc_rai/mod_muc_rai.lua @ 4646:072d078be095

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mod_storage_xmlarchive: Advertise capabilities (none atm) Both 'total' and 'quota' would be prohibitively expensive for the kind of archives this module targets as it would require counting items across the entire archive.
author Kim Alvefur <zash@zash.se>
date Fri, 13 Aug 2021 01:18:32 +0200
parents 9377b5593cc7
children
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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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parents: 4059
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
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
139
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
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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parents:
diff changeset
142 -- Use affiliation as an indication of interest, return
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parents:
diff changeset
143 -- all rooms a user is affiliated
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
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>
parents:
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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parents:
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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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parents:
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
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
162 if err then
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
163 return nil, "internal-server-error";
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
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 = {};
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
166 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
167
4058
cf9a1c7d558d mod_muc_rai: Don't store/modify existing table to track rooms
Matthew Wild <mwild1@gmail.com>
parents: 4057
diff changeset
168 if not subscribed_users:set(user_jid, {}) then
3974
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parents:
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
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
173 local rooms_with_activity;
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
174 for room_name in pairs(interested_rooms) do
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
175 local room_jid = room_name.."@"..module.host;
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
176 if has_new_activity(room_jid, user_jid) then
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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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
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
180 rooms_with_activity = {};
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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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
Matthew Wild <mwild1@gmail.com>
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
Seve Ferrer <seve@delape.net>
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
10dc4527574f mod_muc_rai: Subscribe/unsubscribe users when leaving/joining
Seve Ferrer <seve@delape.net>
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
10dc4527574f mod_muc_rai: Subscribe/unsubscribe users when leaving/joining
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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Seve Ferrer <seve@delape.net>
parents: 4074
diff changeset
198
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
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
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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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
Matthew Wild <mwild1@gmail.com>
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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Matthew Wild <mwild1@gmail.com>
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);