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mod_stanza_counter/mod_stanza_counter.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> |
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date | Sun, 22 Aug 2021 13:22:59 +0200 |
parent | 1343:7dbde05b48a9 |
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-- (C) 2011, Marco Cirillo (LW.Org) -- General Stanzas' Counter. local jid_bare = require "util.jid".bare -- Setup, Init functions. -- initialize function counter table on the global object on start local function init_counter() prosody.stanza_counter = { iq = { incoming=0, outgoing=0 }, message = { incoming=0, outgoing=0 }, presence = { incoming=0, outgoing=0 } } end -- Setup on server start local function setup() init_counter() end -- Basic Stanzas' Counters local function iq_callback(check) return function(self) local origin, stanza = self.origin, self.stanza if not prosody.stanza_counter then init_counter() end if check then if not stanza.attr.to or hosts[jid_bare(stanza.attr.to)] then return nil else prosody.stanza_counter.iq["outgoing"] = prosody.stanza_counter.iq["outgoing"] + 1 end else prosody.stanza_counter.iq["incoming"] = prosody.stanza_counter.iq["incoming"] + 1 end end end local function mes_callback(check) return function(self) local origin, stanza = self.origin, self.stanza if not prosody.stanza_counter then init_counter() end if check then if not stanza.attr.to or hosts[jid_bare(stanza.attr.to)] then return nil else prosody.stanza_counter.message["outgoing"] = prosody.stanza_counter.message["outgoing"] + 1 end else prosody.stanza_counter.message["incoming"] = prosody.stanza_counter.message["incoming"] + 1 end end end local function pre_callback(check) return function(self) local origin, stanza = self.origin, self.stanza if not prosody.stanza_counter then init_counter() end if check then if not stanza.attr.to or hosts[jid_bare(stanza.attr.to)] then return nil else prosody.stanza_counter.presence["outgoing"] = prosody.stanza_counter.presence["outgoing"] + 1 end else prosody.stanza_counter.presence["incoming"] = prosody.stanza_counter.presence["incoming"] + 1 end end end -- Hook all pre-stanza events. module:hook("pre-iq/bare", iq_callback(true), 140) module:hook("pre-iq/full", iq_callback(true), 140) module:hook("pre-iq/host", iq_callback(true), 140) module:hook("pre-message/bare", mes_callback(true), 140) module:hook("pre-message/full", mes_callback(true), 140) module:hook("pre-message/host", mes_callback(true), 140) module:hook("pre-presence/bare", pre_callback(true), 140) module:hook("pre-presence/full", pre_callback(true), 140) module:hook("pre-presence/host", pre_callback(true), 140) -- Hook all stanza events. module:hook("iq/bare", iq_callback(false), 140) module:hook("iq/full", iq_callback(false), 140) module:hook("iq/host", iq_callback(false), 140) module:hook("message/bare", mes_callback(false), 140) module:hook("message/full", mes_callback(false), 140) module:hook("message/host", mes_callback(false), 140) module:hook("presence/bare", pre_callback(false), 140) module:hook("presence/full", pre_callback(false), 140) module:hook("presence/host", pre_callback(false), 140) -- Hook server start to initialize the counter. module:hook("server-started", setup)