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plugins/mod_offline.lua @ 10092:4b3c129e96f2 0.11
mod_websocket: Clone stanza before mutating (fixes #1398)
Checking for `stanza.attr.xmlns == nil` to determine if the stanza
object is an actual stanza (`<message>`, `<presence>` or `<iq>` in the
`jabber:client` or `jabbber:server` namespace) or some other stream
element.
Since this mutation is not reverted, it may leak to other places and
cause them to mistreat stanzas as stream elements. Especially in cases
like MUC where a single stanza is broadcast to many recipients.
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 20 Jul 2019 04:19:58 +0200 |
parent | 8030:bd3527198308 |
child | 10242:7e5d2a6c9390 |
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-- 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 datetime = require "util.datetime"; local jid_split = require "util.jid".split; local offline_messages = module:open_store("offline", "archive"); module:add_feature("msgoffline"); module:hook("message/offline/handle", function(event) local origin, stanza = event.origin, event.stanza; local to = stanza.attr.to; local node; if to then node = jid_split(to) else node = origin.username; end return offline_messages:append(node, nil, stanza, os.time(), ""); end, -1); module:hook("message/offline/broadcast", function(event) local origin = event.origin; local node, host = origin.username, origin.host; local data = offline_messages:find(node); if not data then return true; end for _, stanza, when in data do stanza:tag("delay", {xmlns = "urn:xmpp:delay", from = host, stamp = datetime.datetime(when)}):up(); -- XEP-0203 origin.send(stanza); end offline_messages:delete(node); return true; end, -1);