view mod_compat_vcard/mod_compat_vcard.lua @ 4651:8231774f5bfd

mod_cloud_notify_encrypted: Ensure body substring remains valid UTF-8 The `body:sub()` call risks splitting the string in the middle of a multi-byte UTF-8 sequence. This should have been caught by util.stanza validation, but that would have caused some havoc, at the very least causing the notification to not be sent. There have been no reports of this happening. Likely because this module isn't widely deployed among users with languages that use many longer UTF-8 sequences. The util.encodings.utf8.valid() function is O(n) where only the last sequence really needs to be checked, but it's in C and expected to be fast.
author Kim Alvefur <zash@zash.se>
date Sun, 22 Aug 2021 13:22:59 +0200
parents 3df303543765
children
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-- Compatibility with clients and servers (i.e. ejabberd) that send vcard
-- requests to the full JID
--
-- https://support.process-one.net/browse/EJAB-1045

local jid_bare = require "util.jid".bare;
local st = require "util.stanza";
local core_process_stanza = prosody.core_process_stanza;

module:hook("iq/full", function(event)
	local stanza = event.stanza;
	local payload = stanza.tags[1];
	if payload and stanza.attr.type == "get" and payload.name == "vCard" and payload.attr.xmlns == "vcard-temp" then
		local fixed_stanza = st.clone(event.stanza);
		fixed_stanza.attr.to = jid_bare(stanza.attr.to);
		core_process_stanza(event.origin, fixed_stanza);
		return true;
	end
end, 1);