# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1568061121 -7200
# Node ID 64ddcbc9a328b1565609889007bb5904a9286d92
# Parent  4ef785f45aa23eceab5ee2b30e62b760dbf45c8d
core.stanza_router: Do strict jidprep on c2s

Be conservative in what you let your clients send, be liberal in what
you let in via s2s.

Being strict on s2s leads to interop problems and poor experiences, ie
users being ejected from MUCs if something invalid enters. By starting
with tightening up input into the network, we may be able to gradually
approach a point where no invalid JIDs are allowed.

diff -r 4ef785f45aa2 -r 64ddcbc9a328 core/stanza_router.lua
--- a/core/stanza_router.lua	Wed Oct 30 16:22:44 2019 +0100
+++ b/core/stanza_router.lua	Mon Sep 09 22:32:01 2019 +0200
@@ -83,7 +83,7 @@
 		if full_sessions[to] or bare_sessions[to] or hosts[to] then
 			node, host = jid_split(to); -- TODO only the host is needed, optimize
 		else
-			node, host, resource = jid_prepped_split(to);
+			node, host, resource = jid_prepped_split(to, origin.type == "c2s");
 			if not host then
 				log("warn", "Received stanza with invalid destination JID: %s", to);
 				if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then