view mod_telnet_tlsinfo/mod_telnet_tlsinfo.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 832235cc1910
children
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-- mod_telnet_tlsinfo.lua

module:set_global();
module:depends("admin_telnet");

local console_env = module:shared("/*/admin_telnet/env");
local c2s_sessions = module:shared("/*/c2s/sessions");
local s2s_sessions = module:shared("/*/s2s/sessions");

local function print_tlsinfo(print, session)
	if session.secure then
		local sock = session.conn:socket()
		for k,v in pairs(sock:info()) do
			print(("%20s: %s"):format(k, tostring(v)))
		end
	else
		print(("%20s: %s"):format("protocol", "TCP"))
	end
end

function console_env.c2s:showtls(pat)
	local print = self.session.print;
	for _, session in pairs(c2s_sessions) do
		if not pat or session.full_jid and session.full_jid:find(pat, nil, true) then
			print(session.full_jid or "unauthenticated")
			print_tlsinfo(print, session);
			print""
		end
	end
end

function console_env.s2s:showtls(pat)
	local print = self.session.print;
	for _, session in pairs(s2s_sessions) do
		if not pat or session.from_host == pat or session.to_host == pat then
			if session.direction == "outgoing" then
				print(session.from_host, "->", session.to_host)
			else
				print(session.to_host, "<-", session.from_host)
			end
			print_tlsinfo(print, session);
			print""
		end
	end
end