Mercurial > prosody-modules
view mod_measure_client_identities/mod_measure_client_identities.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 | fdbf7c2aed7b |
children |
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module:set_global(); local measure = require"core.statsmanager".measure; local counters = { unknown = measure("amount", "client_identities.unknown"), }; module:hook("stats-update", function () local buckets = { unknown = 0, }; for _, session in pairs(prosody.full_sessions) do if session.caps_cache ~= nil then local node_string = session.caps_cache.attr.node; local node = node_string:match("([^#]+)"); if buckets[node] == nil then buckets[node] = 0; end buckets[node] = buckets[node] + 1; else buckets.unknown = buckets.unknown + 1; end end local visited = {}; for bucket, count in pairs(buckets) do if counters[bucket] == nil then counters[bucket] = measure("amount", "client_identities."..bucket); end counters[bucket](count); visited[bucket] = true; end for bucket, counter in pairs(counters) do if not visited[bucket] then counter(0); end end end)