Mercurial > prosody-modules
view mod_carbons_adhoc/mod_carbons_adhoc.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 | a6c51f380777 |
children |
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-- Implement a Adhoc command which will show a user -- the status of carbons generation in regard to his clients -- -- Copyright (C) 2012 Michael Holzt -- -- This file is MIT/X11 licensed. local st = require "util.stanza"; local jid_bare = require "util.jid".bare; local adhoc_new = module:require "adhoc".new; local xmlns_carbons_v2 = "urn:xmpp:carbons:2"; local xmlns_carbons_v1 = "urn:xmpp:carbons:1"; local xmlns_carbons_v0 = "urn:xmpp:carbons:0"; local bare_sessions = bare_sessions; local function adhoc_status(self, data, state) local bare_jid = jid_bare(data.from); local user_sessions = bare_sessions[bare_jid]; local result = ""; user_sessions = user_sessions and user_sessions.sessions; for _, session in pairs(user_sessions) do if session.full_jid then result = result .. session.full_jid .. ": " .. ( (session.want_carbons == xmlns_carbons_v2 and "v2" ) or (session.want_carbons == xmlns_carbons_v1 and "v1" ) or (session.want_carbons == xmlns_carbons_v0 and "v0" ) or "none" ) .. "\n"; end end return { info = result, status = "completed" }; end local status_desc = adhoc_new("Carbons: Get Status", "mod_carbons_adhoc#status", adhoc_status); module:add_item("adhoc", status_desc);