plugins/muc/password.lib.lua

   1 -- Prosody IM
   2 -- Copyright (C) 2008-2010 Matthew Wild
   3 -- Copyright (C) 2008-2010 Waqas Hussain
   4 -- Copyright (C) 2014 Daurnimator
   5 --
   6 -- This project is MIT/X11 licensed. Please see the
   7 -- COPYING file in the source package for more information.
   8 --
   9
  10 local st = require "util.stanza";
  11
  12 local function get_password(room)
  13         return room._data.password;
  14 end
  15
  16 local function set_password(room, password)
  17         if password == "" then password = nil; end
  18         if room._data.password == password then return false; end
  19         room._data.password = password;
  20         if room.save then room:save(true); end
  21         return true;
  22 end
  23
  24 module:hook("muc-disco#info", function(event)
  25         event.reply:tag("feature", {var = get_password(event.room) and "muc_passwordprotected" or "muc_unsecured"}):up();
  26 end);
  27
  28 module:hook("muc-config-form", function(event)
  29         table.insert(event.form, {
  30                 name = "muc#roomconfig_roomsecret";
  31                 type = "text-private";
  32                 label = "Password";
  33                 value = get_password(event.room) or "";
  34         });
  35 end);
  36
  37 module:hook("muc-config-submitted", function(event)
  38         local new = event.fields["muc#roomconfig_roomsecret"];
  39         if new ~= nil and set_password(event.room, new) then
  40                 event.status_codes["104"] = true;
  41         end
  42 end);
  43
  44 -- Don't allow anyone to join room unless they provide the password
  45 module:hook("muc-occupant-pre-join", function(event)
  46         local room, stanza = event.room, event.stanza;
  47         local password = stanza:get_child("x", "http://jabber.org/protocol/muc");
  48         password = password and password:get_child_text("password", "http://jabber.org/protocol/muc");
  49         if not password or password == "" then password = nil; end
  50         if get_password(room) ~= password then
  51                 local from, to = stanza.attr.from, stanza.attr.to;
  52                 module:log("debug", "%s couldn't join due to invalid password: %s", from, to);
  53                 local reply = st.error_reply(stanza, "auth", "not-authorized"):up();
  54                 reply.tags[1].attr.code = "401";
  55                 event.origin.send(reply:tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
  56                 return true;
  57         end
  58 end, -20);
  59
  60 -- Add password to outgoing invite
  61 module:hook("muc-invite", function(event)
  62         local password = get_password(event.room);
  63         if password then
  64                 local x = event.stanza:get_child("x", "http://jabber.org/protocol/muc#user");
  65                 x:tag("password"):text(password):up();
  66         end
  67 end);
  68
  69 return {
  70         get = get_password;
  71         set = set_password;
  72 };