diff options
Diffstat (limited to 'plugins/muc/muc.lib.lua')
| -rw-r--r-- | plugins/muc/muc.lib.lua | 625 |
1 files changed, 625 insertions, 0 deletions
diff --git a/plugins/muc/muc.lib.lua b/plugins/muc/muc.lib.lua new file mode 100644 index 00000000..6917b21a --- /dev/null +++ b/plugins/muc/muc.lib.lua @@ -0,0 +1,625 @@ +-- 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 base64 = require "util.encodings".base64; +local md5 = require "util.hashes".md5; + +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"}):up() + :tag("feature", {var="http://jabber.org/protocol/muc"}); +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); + local reply = st.error_reply(stanza, "cancel", "conflict"):up(); + reply.tags[1].attr.code = "409"; + origin.send(reply: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); + local reply = st.error_reply(stanza, "cancel", "conflict"):up(); + reply.tags[1].attr.code = "409"; + origin.send(reply: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 + local reply = st.error_reply(stanza, "auth", "forbidden"):up(); + reply.tags[1].attr.code = "403"; + origin.send(reply: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 then -- not in room + if type == "error" or type == "result" then + local id = stanza.name == "iq" and stanza.attr.id and base64.decode(stanza.attr.id); + local _nick, _id, _hash = (id or ""):match("^(.+)%z(.*)%z(.+)$"); + local occupant = self._occupants[stanza.attr.to]; + if occupant and _nick and self._jid_nick[_nick] and _id and _hash then + local id, _to = stanza.attr.id; + for jid in pairs(occupant.sessions) do + if md5(jid) == _hash then + _to = jid; + break; + end + end + if _to then + stanza.attr.to, stanza.attr.from, stanza.attr.id = _to, self._jid_nick[_nick], _id; + self:route_stanza(stanza); + stanza.attr.to, stanza.attr.from, stanza.attr.id = to, from, id; + end + end + else + origin.send(st.error_reply(stanza, "cancel", "not-acceptable")); + end + elseif stanza.name == "message" and type == "groupchat" then -- groupchat messages not allowed in PM + origin.send(st.error_reply(stanza, "modify", "bad-request")); + 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; + local bare = jid_bare(jid); + stanza.attr.to, stanza.attr.from = jid, current_nick; + local id = stanza.attr.id; + if stanza.name=='iq' and type=='get' and stanza.tags[1].attr.xmlns == 'vcard-temp' and bare ~= jid then + stanza.attr.to = bare; + stanza.attr.id = base64.encode(jid.."\0"..id.."\0"..md5(from)); + end + self:route_stanza(stanza); + stanza.attr.to, stanza.attr.from, stanza.attr.id = to, from, id; + 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 == "message" and type == "error" and get_kickable_error(stanza) then + local current_nick = self._jid_nick[stanza.attr.from]; + log("debug", "%s kicked from %s for sending an error message", current_nick, self.jid); + self:handle_to_occupant(origin, st.presence({type='unavailable', from=stanza.attr.from, to=stanza.attr.to}) + :tag('status'):text('This participant is kicked from the room because he sent an error message to another occupant')); -- send unavailable + 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; |