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prosody
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plugins/mod_message.lua @ 11704:0a8671f32424
mod_s2s: Guard against missing 'to' on incoming stream
Given an incoming <stream:stream from="example.com"> this line would
have mistakenly reported the 'from' as the local host. Neither are
technically required and may be missing, especially on connections used
only for Dialback.
Outgoing connections initiated by Prosody always have 'from_host' and
'to_host', so it is safer to check it this way.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Sun, 18 Jul 2021 09:08:04 +0200 |
parent | 11482:671f6b867e0d |
child | 11797:72a2b85c0537 |
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-- Prosody IM -- Copyright (C) 2008-2010 Matthew Wild -- Copyright (C) 2008-2010 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local full_sessions = prosody.full_sessions; local bare_sessions = prosody.bare_sessions; local st = require "util.stanza"; local jid_bare = require "util.jid".bare; local jid_split = require "util.jid".split; local user_exists = require "core.usermanager".user_exists; local function process_to_bare(bare, origin, stanza) local user = bare_sessions[bare]; local t = stanza.attr.type; if t == "error" then return true; -- discard elseif t == "groupchat" then origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); elseif t == "headline" then if user and stanza.attr.to == bare then for _, session in pairs(user.sessions) do if session.presence and session.priority >= 0 then session.send(stanza); end end end -- current policy is to discard headlines if no recipient is available else -- chat or normal message if user then -- some resources are connected local recipients = user.top_resources; if recipients then local sent; for i=1,#recipients do sent = recipients[i].send(stanza) or sent; end if sent then return true; end end end -- no resources are online local node, host = jid_split(bare); local ok if user_exists(node, host) then ok = module:fire_event('message/offline/handle', { username = node; origin = origin, stanza = stanza, }); end if not ok then origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); end end return true; end module:hook("message/full", function(data) -- message to full JID received local origin, stanza = data.origin, data.stanza; local session = full_sessions[stanza.attr.to]; if session and session.send(stanza) then return true; else -- resource not online return process_to_bare(jid_bare(stanza.attr.to), origin, stanza); end end, -1); module:hook("message/bare", function(data) -- message to bare JID received local origin, stanza = data.origin, data.stanza; return process_to_bare(stanza.attr.to or (origin.username..'@'..origin.host), origin, stanza); end, -1);