prosody-modules
a0937b5cfdcb
mod_muc_rai/mod_muc_rai.lua

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mod_muc_rai/mod_muc_rai.lua @ 4210:a0937b5cfdcb

mod_invites_page: Remove preauth URI button This button is incompatible with the majority of XMPP clients around, yet based on feedback from users, many are drawn to click it when they have any XMPP client installed already. In the case where the user already has software installed, we would prefer them to select it from the software list so they can follow the setup process suited to their specific client (we already track which software supports preauth URIs). If their client is not listed, they can still use the manual registration link instead.
author Matthew Wild <mwild1@gmail.com>
date Fri, 16 Oct 2020 11:03:38 +0100
parent 4074:4b84beb48ba0
child 4277:10dc4527574f
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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 = "xmpp:prosody.im/protocol/rai";
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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 return last_room_message_id;
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99 end
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100
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101 -- Load all the data!
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102 local query = {
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103 limit = 1;
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104 reverse = true;
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105 with = "message<groupchat";
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106 }
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107 local data, err = muc_archive:find(jid.node(room_jid), query);
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108
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109 if not data then
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110 module:log("error", "Could not fetch history: %s", err);
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111 return nil;
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112 end
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113
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114 local id = data();
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115 room_activity_cache:set(room_jid, id);
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116 return id;
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117 end
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118
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119 local function update_room_activity(room_jid, last_id)
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120 room_activity_cache:set(room_jid, last_id);
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121 end
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122
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123 local function get_last_user_read_id(user_jid, room_jid)
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124 return muc_markers.get_user_read_marker(jid.bare(user_jid), room_jid);
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125 end
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126
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127 local function has_new_activity(room_jid, user_jid)
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128 local last_room_message_id = get_last_room_message_id(room_jid);
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129 local last_user_read_id = get_last_user_read_id(user_jid, room_jid);
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130 module:log("debug", "Checking activity in <%s> (%s) for <%s> (%s): %s",
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131 room_jid, last_room_message_id,
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132 user_jid, last_user_read_id,
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133 tostring(last_room_message_id ~= last_user_read_id)
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diff changeset
134 );
3974
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135 return last_room_message_id ~= last_user_read_id;
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parents:
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136 end
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137
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138 -- Returns a set of rooms that a user is interested in
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139 local function get_interested_rooms(user_jid)
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140 -- Use affiliation as an indication of interest, return
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141 -- all rooms a user is affiliated
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142 return muc_affiliation_store:get_all(jid.bare(user_jid));
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143 end
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144
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145 local function is_subscribed(user_jid)
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146 return not not subscribed_users:get(user_jid);
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147 end
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148
3974
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149 -- Subscribes to all rooms that the user has an interest in
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150 -- Returns a set of room JIDs that have already had activity (thus no subscription)
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151 local function subscribe_all_rooms(user_jid)
3998
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152 if is_subscribed(user_jid) then
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153 return nil;
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154 end
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155
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156 -- Send activity notifications for all relevant rooms
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157 local interested_rooms, err = get_interested_rooms(user_jid);
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158
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159 if not interested_rooms then
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160 if err then
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161 return nil, "internal-server-error";
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162 end
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163 interested_rooms = {};
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164 end
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165
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166 if not subscribed_users:set(user_jid, {}) then
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167 module:log("warn", "Subscriber limit (%d) reached, rejecting subscription from %s", max_subscribers, user_jid);
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168 return nil, "resource-constraint";
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169 end
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parents:
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170
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171 local rooms_with_activity;
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172 for room_name in pairs(interested_rooms) do
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173 local room_jid = room_name.."@"..module.host;
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174 if has_new_activity(room_jid, user_jid) then
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175 -- There has already been activity, include this room
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176 -- in the response
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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177 if not rooms_with_activity then
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178 rooms_with_activity = {};
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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179 end
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180 rooms_with_activity[room_jid] = true;
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181 else
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182 -- Subscribe to any future activity
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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diff changeset
183 subscribe_room(user_jid, room_jid);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
184 end
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parents:
diff changeset
185 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
186 return rooms_with_activity;
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
187 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
188
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
189 module:hook("presence/host", function (event)
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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190 local origin, stanza = event.origin, event.stanza;
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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diff changeset
191 local user_jid = stanza.attr.from;
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
192
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
193 if stanza.attr.type == "unavailable" then -- User going offline
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
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194 unsubscribe_user_from_all_rooms(user_jid);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
195 return true;
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
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196 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
197
4074
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parents: 4060
diff changeset
198 if not stanza:get_child("rai", xmlns_rai) then
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parents: 4060
diff changeset
199 return; -- Ignore, no <rai/> tag
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diff changeset
200 end
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parents: 4060
diff changeset
201
3974
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202 local rooms_with_activity, err = subscribe_all_rooms(user_jid);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
203
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
204 if not rooms_with_activity then
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
205 if not err then
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
206 module:log("debug", "No activity to notify");
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
207 return true;
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
208 else
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
209 return origin.send(st.error_reply(stanza, "wait", "resource-constraint"));
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
210 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
211 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
212
3997
0e72dd70afff mod_muc_rai: Use correct stanza kind (message) for initial notification
Matthew Wild <mwild1@gmail.com>
parents: 3974
diff changeset
213 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
214 :tag("rai", { xmlns = xmlns_rai });
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
215 for room_jid in pairs(rooms_with_activity) do
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
216 reply:text_tag("activity", room_jid);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
217 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
218 return origin.send(reply);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
219 end);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
220
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
221 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
222 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
223 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
224 if archive_id and archive_id.attr.id then
3974
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
225 -- 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
226 -- 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
227 update_room_activity(room.jid, archive_id.attr.id);
3974
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
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parents:
diff changeset
228 -- 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
229 notify_interested_users(room.jid);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
230 end
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
231 end, -1);
f14c862598a9 mod_muc_rai: New module to implement Room Activity Indicators
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
232