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mod_compat_muc_admin/mod_compat_muc_admin.lua @ 3301:f69233c3e0c0
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author | Kim Alvefur <zash@zash.se> |
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date | Sat, 08 Sep 2018 11:37:38 +0200 |
parent | 731:15a8b717597b |
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local st = require "util.stanza"; local jid_split = require "util.jid".split; local jid_bare = require "util.jid".bare; local jid_prep = require "util.jid".prep; local log = require "util.logger".init("mod_muc"); local muc_host = module:get_host(); if not hosts[muc_host].modules.muc then -- Not a MUC host module:log("error", "this module can only be used on muc hosts."); return false; end -- Constants and imported functions from muc.lib.lua local xmlns_ma, xmlns_mo = "http://jabber.org/protocol/muc#admin", "http://jabber.org/protocol/muc#owner"; 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; ["malformed error"] = true; }; local function get_error_condition(stanza) local _, condition = stanza:get_error(); return condition or "malformed error"; end local function is_kickable_error(stanza) local cond = get_error_condition(stanza); return kickable_error_conditions[cond] and cond; end local function build_unavailable_presence_from_error(stanza) local type, condition, text = stanza:get_error(); local error_message = "Kicked: "..(condition and condition:gsub("%-", " ") or "presence error"); if text then error_message = error_message..": "..text; end return st.presence({type='unavailable', from=stanza.attr.from, to=stanza.attr.to}) :tag('status'):text(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 getText(stanza, path) return getUsingPath(stanza, path, true); end -- COMPAT: iq condensed function hosts[muc_host].modules.muc.stanza_handler.muc_new_room.room_mt["compat_iq"] = function (self, origin, stanza, xmlns) 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 stanza.attr.type == "set" then local callback = function() origin.send(st.reply(stanza)); end if item.attr.jid then -- Validate provided JID item.attr.jid = jid_prep(item.attr.jid); if not item.attr.jid then origin.send(st.error_reply(stanza, "modify", "jid-malformed")); return; end 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 elseif not item.attr.nick and item.attr.jid then local nick = self._jid_nick[item.attr.jid]; if nick then item.attr.nick = select(3, jid_split(nick)); end end local reason = item.tags[1] and item.tags[1].name == "reason" and #item.tags[1] == 1 and item.tags[1][1]; 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, reason); 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, reason); 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 stanza.attr.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(xmlns); 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(xmlns); for occupant_jid, occupant in pairs(self._occupants) do if occupant.role == _rol then reply:tag("item", { nick = select(3, jid_split(occupant_jid)), 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 stanza.attr.type == "set" or stanza.attr.type == "get" then origin.send(st.error_reply(stanza, "cancel", "bad-request")); end end -- COMPAT: reworked handle_to_room function hosts[muc_host].modules.muc.stanza_handler.muc_new_room.room_mt["handle_to_room"] = function (self, origin, stanza) 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(self:get_disco_info(stanza)); elseif xmlns == "http://jabber.org/protocol/disco#items" and type == "get" then origin.send(self:get_disco_items(stanza)); elseif xmlns == xmlns_ma or xmlns == xmlns_mo then if xmlns == xmlns_ma then self:compat_iq(origin, stanza, xmlns); elseif xmlns == xmlns_mo and (type == "set" or type == "get") and stanza.tags[1].name == "query" then local owner_err = st.error_reply(stanza, "auth", "forbidden", "Only owners can configure rooms"); if #stanza.tags[1].tags == 0 and stanza.attr.type == "get" then if self:get_affiliation(stanza.attr.from) ~= "owner" then origin.send(owner_err); else self:send_form(origin, stanza); end elseif stanza.attr.type == "set" and stanza.tags[1]:get_child("x", "jabber:x:data") then if self:get_affiliation(stanza.attr.from) ~= "owner" then origin.send(owner_err); else self:process_form(origin, stanza); end elseif stanza.tags[1].tags[1].name == "destroy" then if self:get_affiliation(stanza.attr.from) == "owner" then local newjid = stanza.tags[1].tags[1].attr.jid; local reason, password; for _,tag in ipairs(stanza.tags[1].tags[1].tags) do if tag.name == "reason" then reason = #tag.tags == 0 and tag[1]; elseif tag.name == "password" then password = #tag.tags == 0 and tag[1]; end end self:destroy(newjid, reason, password); origin.send(st.reply(stanza)); else origin.send(owner_err); end else self:compat_iq(origin, stanza, xmlns); end else origin.send(st.error_reply(stanza, "modify", "bad-request")); end 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]; local occupant = self._occupants[current_nick]; if not occupant then -- not in room origin.send(st.error_reply(stanza, "cancel", "not-acceptable")); elseif occupant.role == "visitor" then origin.send(st.error_reply(stanza, "cancel", "forbidden")); else local from = stanza.attr.from; stanza.attr.from = current_nick; local subject = getText(stanza, {"subject"}); if subject then if occupant.role == "moderator" or ( self._data.changesubject and occupant.role == "participant" ) then -- and participant self:set_subject(current_nick, subject); -- TODO use broadcast_message_stanza else stanza.attr.from = from; origin.send(st.error_reply(stanza, "cancel", "forbidden")); end else self:broadcast_message(stanza, true); end stanza.attr.from = from; end elseif stanza.name == "message" and type == "error" and is_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, build_unavailable_presence_from_error(stanza)); -- 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" then local x = stanza.tags[1]; local payload = (#x.tags == 1 and x.tags[1]); if payload and payload.name == "invite" and payload.attr.to then local _from, _to = stanza.attr.from, stanza.attr.to; local _invitee = jid_prep(payload.attr.to); if _invitee then local _reason = payload.tags[1] and payload.tags[1].name == 'reason' and #payload.tags[1].tags == 0 and payload.tags[1][1]; local invite = st.message({from = _to, to = _invitee, id = stanza.attr.id}) :tag('x', {xmlns='http://jabber.org/protocol/muc#user'}) :tag('invite', {from=_from}) :tag('reason'):text(_reason or ""):up() :up(); if self:get_password() then invite:tag("password"):text(self:get_password()):up(); end invite:up() :tag('x', {xmlns="jabber:x:conference", jid=_to}) -- COMPAT: Some older clients expect this :text(_reason or "") :up() :tag('body') -- Add a plain message for clients which don't support invites :text(_from..' invited you to the room '.._to..(_reason and (' ('.._reason..')') or "")) :up(); if self:is_members_only() and not self:get_affiliation(_invitee) then log("debug", "%s invited %s into members only room %s, granting membership", _from, _invitee, _to); self:set_affiliation(_from, _invitee, "member", nil, "Invited by " .. self._jid_nick[_from]) end self:_route_stanza(invite); else origin.send(st.error_reply(stanza, "cancel", "jid-malformed")); end else origin.send(st.error_reply(stanza, "cancel", "bad-request")); end else if type == "error" or type == "result" then return; end origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); end end