Mercurial > prosody-modules
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