prosody
27f76695f43b
plugins/mod_muc.lua

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plugins/mod_muc.lua @ 666:27f76695f43b

Initial mod_muc: XEP-0045: Multi-User Chat
author Waqas Hussain <waqas20@gmail.com>
date Wed, 31 Dec 2008 10:16:42 +0500
child 668:50072761e02d
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666
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1
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2
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3 local register_component = require "core.componentmanager".register_component;
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4 local jid_split = require "util.jid".split;
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5 local jid_bare = require "util.jid".bare;
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6 local st = require "util.stanza";
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7 local log = require "util.logger".init("mod_muc");
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8 local multitable_new = require "util.multitable".new;
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9
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10 local muc_domain = "conference."..module:get_host();
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11 local muc_name = "MUCMUCMUC!!!";
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12
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13 local rooms = multitable_new();
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14 local jid_nick = multitable_new();
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15 local rooms_info = multitable_new();
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16
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17 local component;
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18
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19 function getUsingPath(stanza, path, getText)
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20 local tag = stanza;
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21 for _, name in ipairs(path) do
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22 if type(tag) ~= 'table' then return; end
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23 tag = tag:child_with_name(name);
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24 end
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25 if tag and getText then tag = table.concat(tag); end
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26 return tag;
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27 end
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28 function getTag(stanza, path) return getUsingPath(stanza, path); end
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29 function getText(stanza, path) return getUsingPath(stanza, path, true); end
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30
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31 function get_disco_info(stanza)
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32 return st.iq({type='result', id=stanza.attr.id, from=muc_domain, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")
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33 :tag("identity", {category='conference', type='text', name=muc_name}):up()
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34 :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply
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35 end
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36 function get_disco_items(stanza)
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37 local reply = st.iq({type='result', id=stanza.attr.id, from=muc_domain, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
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38 for room in pairs(rooms_info:get()) do
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39 reply:tag("item", {jid=room, name=rooms_info:get(room, "name")}):up();
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40 end
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41 return reply; -- TODO cache disco reply
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42 end
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43 function get_room_disco_info(stanza)
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44 return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")
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45 :tag("identity", {category='conference', type='text', name=rooms_info:get(stanza.attr.to, "name")}):up()
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46 :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply
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47 end
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48 function get_room_disco_items(stanza)
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49 return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
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50 end -- TODO allow non-private rooms
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51
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52 function broadcast_presence(type, from, room, code)
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53 local data = rooms:get(room, from);
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54 local stanza = st.presence({type=type, from=from})
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55 :tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
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56 :tag("item", {affiliation=data.affiliation, role=data.role}):up();
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57 if code then
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58 stanza:tag("status", {code=code}):up();
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59 end
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60 local me;
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61 local r = rooms:get(room);
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62 if r then
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63 for occupant, o_data in pairs(r) do
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64 if occupant ~= from then
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65 stanza.attr.to = o_data.jid;
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66 core_route_stanza(component, stanza);
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67 else
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68 me = o_data.jid;
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69 end
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70 end
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71 end
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72 if me then
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73 stanza:tag("status", {code='110'});
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74 stanza.attr.to = me;
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75 core_route_stanza(component, stanza);
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76 end
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77 end
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78 function broadcast_message(from, room, subject, body)
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79 local stanza = st.message({type='groupchat', from=from});
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80 if subject then stanza:tag('subject'):text(subject):up(); end
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81 if body then stanza:tag('body'):text(body):up(); end
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82 local r = rooms:get(room);
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83 if r then
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84 for occupant, o_data in pairs(r) do
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85 stanza.attr.to = o_data.jid;
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86 core_route_stanza(component, stanza);
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87 end
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88 end
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89 end
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90
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91 function handle_to_occupant(origin, stanza) -- PM, vCards, etc
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92 local from, to = stanza.attr.from, stanza.attr.to;
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93 local room = jid_bare(to);
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94 local current_nick = jid_nick:get(from, room);
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95 local type = stanza.attr.type;
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96 if stanza.name == "presence" then
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97 if type == "error" then -- error, kick em out!
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98 local data = rooms:get(room, to);
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99 data.role = 'none';
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100 broadcast_presence('unavailable', to, room); -- TODO also add <status>This participant is kicked from the room because he sent an error presence: badformed error stanza</status>
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101 rooms:remove(room, to);
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102 jid_nick:remove(from, room);
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103 elseif type == "unavailable" then -- unavailable
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104 if current_nick == to then
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105 local data = rooms:get(room, to);
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106 data.role = 'none';
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107 broadcast_presence('unavailable', to, room);
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108 rooms:remove(room, to);
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109 jid_nick:remove(from, room);
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110 end -- TODO else do nothing?
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111 elseif not type then -- available
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112 if current_nick then
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113 if current_nick == to then -- simple presence
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114 -- TODO broadcast
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115 else -- change nick
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116 if rooms:get(room, to) then
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117 origin.send(st.error_reply(stanza, "cancel", "conflict"));
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118 else
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119 local data = rooms:get(room, current_nick);
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120 broadcast_presence('unavailable', current_nick, room, '303');
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121 rooms:remove(room, current_nick);
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122 rooms:set(room, to, data);
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123 jid_nick:set(from, room, to);
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124 broadcast_presence(nil, to, room);
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125 end
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126 end
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127 else -- enter room
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
128 if rooms:get(room, to) then
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
129 origin.send(st.error_reply(stanza, "cancel", "conflict"));
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
130 else
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
131 local data = {affiliation='none', role='participant', jid=from};
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
132 rooms:set(room, to, data);
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
133 jid_nick:set(from, room, to);
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
134 local r = rooms:get(room);
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
135 if r then
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
136 for occupant, o_data in pairs(r) do
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
137 if occupant ~= from then
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
138 local pres = st.presence({to=from, from=occupant})
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
139 :tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
140 :tag("item", {affiliation=o_data.affiliation, role=o_data.role}):up();
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
141 core_route_stanza(component, pres);
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
142 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
143 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
144 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
145 broadcast_presence(nil, to, room);
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
146 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
147 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
148 elseif type ~= 'result' then -- bad type
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
149 origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error?
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
150 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
151 elseif stanza.name == "message" and type == "groupchat" then
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
152 -- groupchat messages not allowed in PM
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
153 origin.send(st.error_reply(stanza, "modify", "bad-request"));
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
154 else
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
155 origin.send(st.error_reply(stanza, "cancel", "not-implemented", "Private stanzas not implemented")); -- TODO route private stanza
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
156 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
157 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
158
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
159 function handle_to_room(origin, stanza) -- presence changes and groupchat messages, along with disco/etc
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
160 local type = stanza.attr.type;
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
161 if stanza.name == "iq" and type == "get" then -- disco requests
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
162 local xmlns = stanza.tags[1].attr.xmlns;
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
163 if xmlns == "http://jabber.org/protocol/disco#info" then
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
164 origin.send(get_room_disco_info(stanza));
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
165 elseif xmlns == "http://jabber.org/protocol/disco#items" then
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
166 origin.send(get_room_disco_items(stanza));
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
167 else
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
168 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
169 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
170 elseif stanza.name == "message" and type == "groupchat" then
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
171 local from, to = stanza.attr.from, stanza.attr.to;
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
172 local room = jid_bare(to);
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
173 local current_nick = jid_nick:get(from, room);
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
174 if not current_nick then -- not in room
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
175 origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
176 else
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
177 broadcast_message(current_nick, room, getText(stanza, {"subject"}), getText(stanza, {"body"}));
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
178 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
179 else
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
180 if type == "error" or type == "result" then return; end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
181 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
182 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
183 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
184
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
185 function handle_to_domain(origin, stanza)
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
186 local type = stanza.attr.type;
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
187 if type == "error" or type == "result" then return; end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
188 if stanza.name == "iq" and type == "get" then
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
189 local xmlns = stanza.tags[1].attr.xmlns;
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
190 if xmlns == "http://jabber.org/protocol/disco#info" then
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
191 origin.send(get_disco_info(stanza));
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
192 elseif xmlns == "http://jabber.org/protocol/disco#items" then
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
193 origin.send(get_disco_items(stanza));
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
194 else
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
195 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
196 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
197 else
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
198 origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "The muc server doesn't deal with messages and presence directed at it"));
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
199 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
200 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
201
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
202 component = register_component(muc_domain, function(origin, stanza)
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
203 local to_node, to_host, to_resource = jid_split(stanza.attr.to);
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
204 if stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
205 if type == "error" or type == "result" then return; end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
206 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME what's appropriate?
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
207 elseif to_resource and not to_node then
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
208 if type == "error" or type == "result" then return; end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
209 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- host/resource
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
210 elseif to_resource then
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
211 handle_to_occupant(origin, stanza);
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
212 elseif to_node then
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
213 handle_to_room(origin, stanza)
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
214 else -- to the main muc domain
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
215 if type == "error" or type == "result" then return; end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
216 handle_to_domain(origin, stanza);
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
217 end
27f76695f43b Initial mod_muc: XEP-0045: Multi-User Chat
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
218 end);