view mod_secure_interfaces/mod_secure_interfaces.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 6c806a99f802
children
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local secure_interfaces = module:get_option_set("secure_interfaces", { "127.0.0.1", "::1" });

module:hook("stream-features", function (event)
	local session = event.origin;
	if session.type ~= "c2s_unauthed" then return; end
	local socket = session.conn:socket();
	if not socket.getsockname then
		module:log("debug", "Unable to determine local address of incoming connection");
		return;
	end
	local localip = socket:getsockname();
	if secure_interfaces:contains(localip) then
		module:log("debug", "Marking session from %s to %s as secure", session.ip or "[?]", localip);
		session.secure = true;
		session.conn.starttls = false;
	else
		module:log("debug", "Not marking session from %s to %s as secure", session.ip or "[?]", localip);
	end
end, 2500);