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-rw-r--r--plugins/muc/muc.lib.lua643
1 files changed, 643 insertions, 0 deletions
diff --git a/plugins/muc/muc.lib.lua b/plugins/muc/muc.lib.lua
new file mode 100644
index 00000000..c63d579d
--- /dev/null
+++ b/plugins/muc/muc.lib.lua
@@ -0,0 +1,643 @@
+-- Prosody IM
+-- Copyright (C) 2008-2009 Matthew Wild
+-- Copyright (C) 2008-2009 Waqas Hussain
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+local datamanager = require "util.datamanager";
+local datetime = require "util.datetime";
+
+local jid_split = require "util.jid".split;
+local jid_bare = require "util.jid".bare;
+local st = require "util.stanza";
+local log = require "util.logger".init("mod_muc");
+local multitable_new = require "util.multitable".new;
+local t_insert, t_remove = table.insert, table.remove;
+local setmetatable = setmetatable;
+
+local muc_domain = nil; --module:get_host();
+local history_length = 20;
+
+------------
+local function filter_xmlns_from_array(array, filters)
+ local count = 0;
+ for i=#array,1,-1 do
+ local attr = array[i].attr;
+ if filters[attr and attr.xmlns] then
+ t_remove(array, i);
+ count = count + 1;
+ end
+ end
+ return count;
+end
+local function filter_xmlns_from_stanza(stanza, filters)
+ if filters then
+ if filter_xmlns_from_array(stanza.tags, filters) ~= 0 then
+ return stanza, filter_xmlns_from_array(stanza, filters);
+ end
+ end
+ return stanza, 0;
+end
+local presence_filters = {["http://jabber.org/protocol/muc"]=true;["http://jabber.org/protocol/muc#user"]=true};
+local function get_filtered_presence(stanza)
+ return filter_xmlns_from_stanza(st.clone(stanza), presence_filters);
+end
+local kickable_error_conditions = {
+ ["gone"] = true;
+ ["internal-server-error"] = true;
+ ["item-not-found"] = true;
+ ["jid-malformed"] = true;
+ ["recipient-unavailable"] = true;
+ ["redirect"] = true;
+ ["remote-server-not-found"] = true;
+ ["remote-server-timeout"] = true;
+ ["service-unavailable"] = true;
+};
+local function get_kickable_error(stanza)
+ for _, tag in ipairs(stanza.tags) do
+ if tag.name == "error" and tag.attr.xmlns == "jabber:client" then
+ for _, cond in ipairs(tag.tags) do
+ if cond.attr.xmlns == "urn:ietf:params:xml:ns:xmpp-stanzas" then
+ return kickable_error_conditions[cond.name] and cond.name;
+ end
+ end
+ return true; -- malformed error message
+ end
+ end
+ return true; -- malformed error message
+end
+local function getUsingPath(stanza, path, getText)
+ local tag = stanza;
+ for _, name in ipairs(path) do
+ if type(tag) ~= 'table' then return; end
+ tag = tag:child_with_name(name);
+ end
+ if tag and getText then tag = table.concat(tag); end
+ return tag;
+end
+local function getTag(stanza, path) return getUsingPath(stanza, path); end
+local function getText(stanza, path) return getUsingPath(stanza, path, true); end
+-----------
+
+--[[function get_room_disco_info(room, stanza)
+ return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")
+ :tag("identity", {category='conference', type='text', name=room._data["name"]):up()
+ :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply
+end
+function get_room_disco_items(room, stanza)
+ return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
+end -- TODO allow non-private rooms]]
+
+--
+
+local room_mt = {};
+room_mt.__index = room_mt;
+
+function room_mt:get_default_role(affiliation)
+ if affiliation == "owner" or affiliation == "admin" then
+ return "moderator";
+ elseif affiliation == "member" or not affiliation then
+ return "participant";
+ end
+end
+
+function room_mt:broadcast_presence(stanza, code, nick)
+ stanza = get_filtered_presence(stanza);
+ local data = self._occupants[stanza.attr.from];
+ stanza:tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
+ :tag("item", {affiliation=data.affiliation, role=data.role, nick=nick}):up();
+ if code then
+ stanza:tag("status", {code=code}):up();
+ end
+ local me;
+ for occupant, o_data in pairs(self._occupants) do
+ if occupant ~= stanza.attr.from then
+ for jid in pairs(o_data.sessions) do
+ stanza.attr.to = jid;
+ self:route_stanza(stanza);
+ end
+ else
+ me = o_data;
+ end
+ end
+ if me then
+ stanza:tag("status", {code='110'});
+ for jid in pairs(me.sessions) do
+ stanza.attr.to = jid;
+ self:route_stanza(stanza);
+ end
+ end
+end
+function room_mt:broadcast_message(stanza, historic)
+ for occupant, o_data in pairs(self._occupants) do
+ for jid in pairs(o_data.sessions) do
+ stanza.attr.to = jid;
+ self:route_stanza(stanza);
+ end
+ end
+ if historic then -- add to history
+ local history = self._data['history'];
+ if not history then history = {}; self._data['history'] = history; end
+ -- stanza = st.clone(stanza);
+ stanza:tag("delay", {xmlns = "urn:xmpp:delay", from = muc_domain, stamp = datetime.datetime()}):up(); -- XEP-0203
+ stanza:tag("x", {xmlns = "jabber:x:delay", from = muc_domain, stamp = datetime.legacy()}):up(); -- XEP-0091 (deprecated)
+ t_insert(history, st.clone(st.preserialize(stanza)));
+ while #history > history_length do t_remove(history, 1) end
+ end
+end
+function room_mt:broadcast_except_nick(stanza, nick)
+ for rnick, occupant in pairs(self._occupants) do
+ if rnick ~= nick then
+ for jid in pairs(occupant.sessions) do
+ stanza.attr.to = jid;
+ self:route_stanza(stanza);
+ end
+ end
+ end
+end
+
+function room_mt:send_occupant_list(to)
+ local current_nick = self._jid_nick[to];
+ for occupant, o_data in pairs(self._occupants) do
+ if occupant ~= current_nick then
+ local pres = get_filtered_presence(o_data.sessions[o_data.jid]);
+ pres.attr.to, pres.attr.from = to, occupant;
+ pres:tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
+ :tag("item", {affiliation=o_data.affiliation, role=o_data.role}):up();
+ self:route_stanza(pres);
+ end
+ end
+end
+function room_mt:send_history(to)
+ local history = self._data['history']; -- send discussion history
+ if history then
+ for _, msg in ipairs(history) do
+ msg = st.deserialize(msg);
+ msg.attr.to=to;
+ self:route_stanza(msg);
+ end
+ end
+ if self._data['subject'] then
+ self:route_stanza(st.message({type='groupchat', from=self.jid, to=to}):tag("subject"):text(self._data['subject']));
+ end
+end
+
+local function room_get_disco_info(self, stanza)
+ return st.reply(stanza):query("http://jabber.org/protocol/disco#info"):tag("identity", {category="conference", type="text"});
+end
+local function room_get_disco_items(self, stanza)
+ return st.reply(stanza):query("http://jabber.org/protocol/disco#items");
+end
+function room_mt:set_subject(current_nick, subject)
+ -- TODO check nick's authority
+ if subject == "" then subject = nil; end
+ self._data['subject'] = subject;
+ if self.save then self:save(); end
+ local msg = st.message({type='groupchat', from=current_nick})
+ :tag('subject'):text(subject):up();
+ self:broadcast_message(msg, false);
+ return true;
+end
+
+function room_mt:handle_to_occupant(origin, stanza) -- PM, vCards, etc
+ local from, to = stanza.attr.from, stanza.attr.to;
+ local room = jid_bare(to);
+ local current_nick = self._jid_nick[from];
+ local type = stanza.attr.type;
+ log("debug", "room: %s, current_nick: %s, stanza: %s", room or "nil", current_nick or "nil", stanza:top_tag());
+ if (select(2, jid_split(from)) == muc_domain) then error("Presence from the MUC itself!!!"); end
+ if stanza.name == "presence" then
+ local pr = get_filtered_presence(stanza);
+ pr.attr.from = current_nick;
+ if type == "error" then -- error, kick em out!
+ if current_nick then
+ log("debug", "kicking %s from %s", current_nick, room);
+ self:handle_to_occupant(origin, st.presence({type='unavailable', from=from, to=to})
+ :tag('status'):text('This participant is kicked from the room because he sent an error presence')); -- send unavailable
+ end
+ elseif type == "unavailable" then -- unavailable
+ if current_nick then
+ log("debug", "%s leaving %s", current_nick, room);
+ local data = self._occupants[current_nick];
+ data.role = 'none';
+ self:broadcast_presence(pr);
+ self._occupants[current_nick] = nil;
+ self._jid_nick[from] = nil;
+ end
+ elseif not type then -- available
+ if current_nick then
+ --if #pr == #stanza or current_nick ~= to then -- commented because google keeps resending directed presence
+ if current_nick == to then -- simple presence
+ log("debug", "%s broadcasted presence", current_nick);
+ self._occupants[current_nick].sessions[from] = pr;
+ self:broadcast_presence(pr);
+ else -- change nick
+ if self._occupants[to] then
+ log("debug", "%s couldn't change nick", current_nick);
+ origin.send(st.error_reply(stanza, "cancel", "conflict"):tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
+ else
+ local data = self._occupants[current_nick];
+ local to_nick = select(3, jid_split(to));
+ if to_nick then
+ log("debug", "%s (%s) changing nick to %s", current_nick, data.jid, to);
+ local p = st.presence({type='unavailable', from=current_nick});
+ self:broadcast_presence(p, '303', to_nick);
+ self._occupants[current_nick] = nil;
+ self._occupants[to] = data;
+ self._jid_nick[from] = to;
+ pr.attr.from = to;
+ self._occupants[to].sessions[from] = pr;
+ self:broadcast_presence(pr);
+ else
+ --TODO malformed-jid
+ end
+ end
+ end
+ --else -- possible rejoin
+ -- log("debug", "%s had connection replaced", current_nick);
+ -- self:handle_to_occupant(origin, st.presence({type='unavailable', from=from, to=to})
+ -- :tag('status'):text('Replaced by new connection'):up()); -- send unavailable
+ -- self:handle_to_occupant(origin, stanza); -- resend available
+ --end
+ else -- enter room
+ local new_nick = to;
+ if self._occupants[to] then
+ new_nick = nil;
+ end
+ if not new_nick then
+ log("debug", "%s couldn't join due to nick conflict: %s", from, to);
+ origin.send(st.error_reply(stanza, "cancel", "conflict"):tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
+ else
+ log("debug", "%s joining as %s", from, to);
+ if not next(self._affiliations) then -- new room, no owners
+ self._affiliations[jid_bare(from)] = "owner";
+ end
+ local affiliation = self:get_affiliation(from);
+ local role = self:get_default_role(affiliation)
+ if role then -- new occupant
+ self._occupants[to] = {affiliation=affiliation, role=role, jid=from, sessions={[from]=get_filtered_presence(stanza)}};
+ self._jid_nick[from] = to;
+ self:send_occupant_list(from);
+ pr.attr.from = to;
+ self:broadcast_presence(pr);
+ self:send_history(from);
+ else -- banned
+ origin.send(st.error_reply(stanza, "auth", "forbidden"):tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
+ end
+ end
+ end
+ elseif type ~= 'result' then -- bad type
+ origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error?
+ end
+ elseif not current_nick and type ~= "error" and type ~= "result" then -- not in room
+ origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
+ elseif stanza.name == "message" and type == "groupchat" then -- groupchat messages not allowed in PM
+ origin.send(st.error_reply(stanza, "modify", "bad-request"));
+ elseif stanza.name == "message" and type == "error" and get_kickable_error(stanza) then
+ log("debug", "%s kicked from %s for sending an error message", current_nick, room);
+ self:handle_to_occupant(origin, st.presence({type='unavailable', from=from, to=to}):tag('status'):text('This participant is kicked from the room because he sent an error message to another occupant')); -- send unavailable
+ else -- private stanza
+ local o_data = self._occupants[to];
+ if o_data then
+ log("debug", "%s sent private stanza to %s (%s)", from, to, o_data.jid);
+ local jid = o_data.jid;
+ -- TODO if stanza.name=='iq' and type=='get' and stanza.tags[1].attr.xmlns == 'vcard-temp' then jid = jid_bare(jid); end
+ stanza.attr.to, stanza.attr.from = jid, current_nick;
+ self:route_stanza(stanza);
+ elseif type ~= "error" and type ~= "result" then -- recipient not in room
+ origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Recipient not in room"));
+ end
+ end
+end
+
+function room_mt:handle_form(origin, stanza)
+ if self:get_affiliation(stanza.attr.from) ~= "owner" then origin.send(st.error_reply(stanza, "auth", "forbidden")); return; end
+ if stanza.attr.type == "get" then
+ local title = "Configuration for "..self.jid;
+ origin.send(st.reply(stanza):query("http://jabber.org/protocol/muc#owner")
+ :tag("x", {xmlns='jabber:x:data', type='form'})
+ :tag("title"):text(title):up()
+ :tag("instructions"):text(title):up()
+ :tag("field", {type='hidden', var='FORM_TYPE'}):tag("value"):text("http://jabber.org/protocol/muc#roomconfig"):up():up()
+ :tag("field", {type='boolean', label='Make Room Persistent?', var='muc#roomconfig_persistentroom'})
+ :tag("value"):text(self._data.persistent and "1" or "0"):up()
+ :up()
+ :tag("field", {type='boolean', label='Make Room Publicly Searchable?', var='muc#roomconfig_publicroom'})
+ :tag("value"):text(self._data.hidden and "0" or "1"):up()
+ :up()
+ );
+ elseif stanza.attr.type == "set" then
+ local query = stanza.tags[1];
+ local form;
+ for _, tag in ipairs(query.tags) do if tag.name == "x" and tag.attr.xmlns == "jabber:x:data" then form = tag; break; end end
+ if not form then origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); return; end
+ if form.attr.type == "cancel" then origin.send(st.reply(stanza)); return; end
+ if form.attr.type ~= "submit" then origin.send(st.error_reply(stanza, "cancel", "bad-request")); return; end
+ local fields = {};
+ for _, field in pairs(form.tags) do
+ if field.name == "field" and field.attr.var and field.tags[1].name == "value" and #field.tags[1].tags == 0 then
+ fields[field.attr.var] = field.tags[1][1] or "";
+ end
+ end
+ if fields.FORM_TYPE ~= "http://jabber.org/protocol/muc#roomconfig" then origin.send(st.error_reply(stanza, "cancel", "bad-request")); return; end
+
+ local persistent = fields['muc#roomconfig_persistentroom'];
+ if persistent == "0" or persistent == "false" then persistent = nil; elseif persistent == "1" or persistent == "true" then persistent = true;
+ else origin.send(st.error_reply(stanza, "cancel", "bad-request")); return; end
+ self._data.persistent = persistent;
+ module:log("debug", "persistent=%s", tostring(persistent));
+
+ local public = fields['muc#roomconfig_publicroom'];
+ if public == "0" or public == "false" then public = nil; elseif public == "1" or public == "true" then public = true;
+ else origin.send(st.error_reply(stanza, "cancel", "bad-request")); return; end
+ self._data.hidden = not public and true or nil;
+
+ if self.save then self:save(true); end
+ origin.send(st.reply(stanza));
+ end
+end
+
+function room_mt:handle_to_room(origin, stanza) -- presence changes and groupchat messages, along with disco/etc
+ local type = stanza.attr.type;
+ local xmlns = stanza.tags[1] and stanza.tags[1].attr.xmlns;
+ if stanza.name == "iq" then
+ if xmlns == "http://jabber.org/protocol/disco#info" and type == "get" then
+ origin.send(room_get_disco_info(self, stanza));
+ elseif xmlns == "http://jabber.org/protocol/disco#items" and type == "get" then
+ origin.send(room_get_disco_items(self, stanza));
+ elseif xmlns == "http://jabber.org/protocol/muc#admin" then
+ local actor = stanza.attr.from;
+ local affiliation = self:get_affiliation(actor);
+ local current_nick = self._jid_nick[actor];
+ local role = current_nick and self._occupants[current_nick].role or self:get_default_role(affiliation);
+ local item = stanza.tags[1].tags[1];
+ if item and item.name == "item" then
+ if type == "set" then
+ local callback = function() origin.send(st.reply(stanza)); end
+ if not item.attr.jid and item.attr.nick then -- COMPAT Workaround for Miranda sending 'nick' instead of 'jid' when changing affiliation
+ local occupant = self._occupants[self.jid.."/"..item.attr.nick];
+ if occupant then item.attr.jid = occupant.jid; end
+ end
+ if item.attr.affiliation and item.attr.jid and not item.attr.role then
+ local success, errtype, err = self:set_affiliation(actor, item.attr.jid, item.attr.affiliation, callback);
+ if not success then origin.send(st.error_reply(stanza, errtype, err)); end
+ elseif item.attr.role and item.attr.nick and not item.attr.affiliation then
+ local success, errtype, err = self:set_role(actor, self.jid.."/"..item.attr.nick, item.attr.role, callback);
+ if not success then origin.send(st.error_reply(stanza, errtype, err)); end
+ else
+ origin.send(st.error_reply(stanza, "cancel", "bad-request"));
+ end
+ elseif type == "get" then
+ local _aff = item.attr.affiliation;
+ local _rol = item.attr.role;
+ if _aff and not _rol then
+ if affiliation == "owner" or (affiliation == "admin" and _aff ~= "owner" and _aff ~= "admin") then
+ local reply = st.reply(stanza):query("http://jabber.org/protocol/muc#admin");
+ for jid, affiliation in pairs(self._affiliations) do
+ if affiliation == _aff then
+ reply:tag("item", {affiliation = _aff, jid = jid}):up();
+ end
+ end
+ origin.send(reply);
+ else
+ origin.send(st.error_reply(stanza, "auth", "forbidden"));
+ end
+ elseif _rol and not _aff then
+ if role == "moderator" then
+ -- TODO allow admins and owners not in room? Provide read-only access to everyone who can see the participants anyway?
+ if _rol == "none" then _rol = nil; end
+ local reply = st.reply(stanza):query("http://jabber.org/protocol/muc#admin");
+ for nick, occupant in pairs(self._occupants) do
+ if occupant.role == _rol then
+ reply:tag("item", {nick = nick, role = _rol or "none", affiliation = occupant.affiliation or "none", jid = occupant.jid}):up();
+ end
+ end
+ origin.send(reply);
+ else
+ origin.send(st.error_reply(stanza, "auth", "forbidden"));
+ end
+ else
+ origin.send(st.error_reply(stanza, "cancel", "bad-request"));
+ end
+ end
+ elseif type == "set" or type == "get" then
+ origin.send(st.error_reply(stanza, "cancel", "bad-request"));
+ end
+ elseif xmlns == "http://jabber.org/protocol/muc#owner" and (type == "get" or type == "set") and stanza.tags[1].name == "query" then
+ self:handle_form(origin, stanza);
+ elseif type == "set" or type == "get" then
+ origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
+ end
+ elseif stanza.name == "message" and type == "groupchat" then
+ local from, to = stanza.attr.from, stanza.attr.to;
+ local room = jid_bare(to);
+ local current_nick = self._jid_nick[from];
+ if not current_nick then -- not in room
+ origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
+ else
+ local from = stanza.attr.from;
+ stanza.attr.from = current_nick;
+ local subject = getText(stanza, {"subject"});
+ if subject then
+ self:set_subject(current_nick, subject); -- TODO use broadcast_message_stanza
+ else
+ self:broadcast_message(stanza, true);
+ end
+ end
+ elseif stanza.name == "presence" then -- hack - some buggy clients send presence updates to the room rather than their nick
+ local to = stanza.attr.to;
+ local current_nick = self._jid_nick[stanza.attr.from];
+ if current_nick then
+ stanza.attr.to = current_nick;
+ self:handle_to_occupant(origin, stanza);
+ stanza.attr.to = to;
+ elseif type ~= "error" and type ~= "result" then
+ origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
+ end
+ elseif stanza.name == "message" and not stanza.attr.type and #stanza.tags == 1 and self._jid_nick[stanza.attr.from]
+ and stanza.tags[1].name == "x" and stanza.tags[1].attr.xmlns == "http://jabber.org/protocol/muc#user" and #stanza.tags[1].tags == 1
+ and stanza.tags[1].tags[1].name == "invite" and stanza.tags[1].tags[1].attr.to then
+ local _from, _to = stanza.attr.from, stanza.attr.to;
+ local _invitee = stanza.tags[1].tags[1].attr.to;
+ stanza.attr.from, stanza.attr.to = _to, _invitee;
+ stanza.tags[1].tags[1].attr.from, stanza.tags[1].tags[1].attr.to = _from, nil;
+ self:route_stanza(stanza);
+ stanza.tags[1].tags[1].attr.from, stanza.tags[1].tags[1].attr.to = nil, _invitee;
+ stanza.attr.from, stanza.attr.to = _from, _to;
+ else
+ if type == "error" or type == "result" then return; end
+ origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
+ end
+end
+
+function room_mt:handle_stanza(origin, stanza)
+ local to_node, to_host, to_resource = jid_split(stanza.attr.to);
+ if to_resource then
+ self:handle_to_occupant(origin, stanza);
+ else
+ self:handle_to_room(origin, stanza);
+ end
+end
+
+function room_mt:route_stanza(stanza) end -- Replace with a routing function, e.g., function(room, stanza) core_route_stanza(origin, stanza); end
+
+function room_mt:get_affiliation(jid)
+ local node, host, resource = jid_split(jid);
+ local bare = node and node.."@"..host or host;
+ local result = self._affiliations[bare]; -- Affiliations are granted, revoked, and maintained based on the user's bare JID.
+ if not result and self._affiliations[host] == "outcast" then result = "outcast"; end -- host banned
+ return result;
+end
+function room_mt:set_affiliation(actor, jid, affiliation, callback)
+ jid = jid_bare(jid);
+ if affiliation == "none" then affiliation = nil; end
+ if affiliation and affiliation ~= "outcast" and affiliation ~= "owner" and affiliation ~= "admin" and affiliation ~= "member" then
+ return nil, "modify", "not-acceptable";
+ end
+ if self:get_affiliation(actor) ~= "owner" then return nil, "cancel", "not-allowed"; end
+ if jid_bare(actor) == jid then return nil, "cancel", "not-allowed"; end
+ self._affiliations[jid] = affiliation;
+ local role = self:get_default_role(affiliation);
+ local p = st.presence()
+ :tag("x", {xmlns = "http://jabber.org/protocol/muc#user"})
+ :tag("item", {affiliation=affiliation or "none", role=role or "none"}):up();
+ local x = p.tags[1];
+ local item = x.tags[1];
+ if not role then -- getting kicked
+ p.attr.type = "unavailable";
+ if affiliation == "outcast" then
+ x:tag("status", {code="301"}):up(); -- banned
+ else
+ x:tag("status", {code="321"}):up(); -- affiliation change
+ end
+ end
+ local modified_nicks = {};
+ for nick, occupant in pairs(self._occupants) do
+ if jid_bare(occupant.jid) == jid then
+ if not role then -- getting kicked
+ self._occupants[nick] = nil;
+ else
+ t_insert(modified_nicks, nick);
+ occupant.affiliation, occupant.role = affiliation, role;
+ end
+ p.attr.from = nick;
+ for jid in pairs(occupant.sessions) do -- remove for all sessions of the nick
+ if not role then self._jid_nick[jid] = nil; end
+ p.attr.to = jid;
+ self:route_stanza(p);
+ end
+ end
+ end
+ if self.save then self:save(); end
+ if callback then callback(); end
+ for _, nick in ipairs(modified_nicks) do
+ p.attr.from = nick;
+ self:broadcast_except_nick(p, nick);
+ end
+ return true;
+end
+
+function room_mt:get_role(nick)
+ local session = self._occupants[nick];
+ return session and session.role or nil;
+end
+function room_mt:set_role(actor, nick, role, callback)
+ if role == "none" then role = nil; end
+ if role and role ~= "moderator" and role ~= "participant" and role ~= "visitor" then return nil, "modify", "not-acceptable"; end
+ if self:get_affiliation(actor) ~= "owner" then return nil, "cancel", "not-allowed"; end
+ local occupant = self._occupants[nick];
+ if not occupant then return nil, "modify", "not-acceptable"; end
+ if occupant.affiliation == "owner" or occupant.affiliation == "admin" then return nil, "cancel", "not-allowed"; end
+ local p = st.presence({from = nick})
+ :tag("x", {xmlns = "http://jabber.org/protocol/muc#user"})
+ :tag("item", {affiliation=occupant.affiliation or "none", nick=nick, role=role or "none"}):up();
+ if not role then -- kick
+ p.attr.type = "unavailable";
+ self._occupants[nick] = nil;
+ for jid in pairs(occupant.sessions) do -- remove for all sessions of the nick
+ self._jid_nick[jid] = nil;
+ end
+ p:tag("status", {code = "307"}):up();
+ else
+ occupant.role = role;
+ end
+ for jid in pairs(occupant.sessions) do -- send to all sessions of the nick
+ p.attr.to = jid;
+ self:route_stanza(p);
+ end
+ if callback then callback(); end
+ self:broadcast_except_nick(p, nick);
+ return true;
+end
+
+local _M = {}; -- module "muc"
+
+function _M.new_room(jid)
+ return setmetatable({
+ jid = jid;
+ _jid_nick = {};
+ _occupants = {};
+ _data = {};
+ _affiliations = {};
+ }, room_mt);
+end
+
+return _M;
+
+--[[function get_disco_info(stanza)
+ return st.iq({type='result', id=stanza.attr.id, from=muc_domain, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")
+ :tag("identity", {category='conference', type='text', name=muc_name}):up()
+ :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply
+end
+function get_disco_items(stanza)
+ local reply = st.iq({type='result', id=stanza.attr.id, from=muc_domain, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
+ for room in pairs(rooms_info:get()) do
+ reply:tag("item", {jid=room, name=rooms_info:get(room, "name")}):up();
+ end
+ return reply; -- TODO cache disco reply
+end]]
+
+--[[function handle_to_domain(origin, stanza)
+ local type = stanza.attr.type;
+ if type == "error" or type == "result" then return; end
+ if stanza.name == "iq" and type == "get" then
+ local xmlns = stanza.tags[1].attr.xmlns;
+ if xmlns == "http://jabber.org/protocol/disco#info" then
+ origin.send(get_disco_info(stanza));
+ elseif xmlns == "http://jabber.org/protocol/disco#items" then
+ origin.send(get_disco_items(stanza));
+ else
+ origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc
+ end
+ else
+ origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "The muc server doesn't deal with messages and presence directed at it"));
+ end
+end
+
+register_component(muc_domain, function(origin, stanza)
+ local to_node, to_host, to_resource = jid_split(stanza.attr.to);
+ if to_resource and not to_node then
+ if type == "error" or type == "result" then return; end
+ origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- host/resource
+ elseif to_resource then
+ handle_to_occupant(origin, stanza);
+ elseif to_node then
+ handle_to_room(origin, stanza)
+ else -- to the main muc domain
+ if type == "error" or type == "result" then return; end
+ handle_to_domain(origin, stanza);
+ end
+end);]]
+
+--[[module.unload = function()
+ deregister_component(muc_domain);
+end
+module.save = function()
+ return {rooms = rooms.data; jid_nick = jid_nick.data; rooms_info = rooms_info.data; persist_list = persist_list};
+end
+module.restore = function(data)
+ rooms.data, jid_nick.data, rooms_info.data, persist_list =
+ data.rooms or {}, data.jid_nick or {}, data.rooms_info or {}, data.persist_list or {};
+end]]