Mercurial > prosody-modules
view mod_register_oob_url/mod_register_oob_url.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 | a7c2df6b2662 |
children |
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-- Register via OOB URL -- Copyright (c) 2018 Daniel Gultsch -- -- This module is MIT/X11 licensed -- local st = require "util.stanza"; local namespace = "http://jabber.org/features/iq-register" local register_stream_feature = st.stanza("register", {xmlns=namespace}):up(); local allow_registration = module:get_option_boolean("allow_registration", false); local registration_url = module:get_option_string("register_oob_url", nil) if allow_registration then module:log("info","obb registration is disabled as long as IBR is allowed. Set `allow_registration` to false") end if not registration_url then module:log("info","registration url not configured. Add `register_oob_url` to prosody.cfg") end local function on_stream_features(event) if not registration_url then return end local session, features = event.origin, event.features; if session.type == "c2s_unauthed" and not allow_registration then features:add_child(register_stream_feature); end end local function on_registration_requested(event) local session, stanza = event.origin, event.stanza if session.type ~= "c2s_unauthed" or stanza.attr.type ~= "get" then return end if not allow_registration and registration_url then local reply = st.reply(stanza) reply:query("jabber:iq:register") :tag("x", {xmlns = "jabber:x:oob"}) :tag("url"):text(registration_url); return session.send(reply) end end module:hook("stream-features", on_stream_features) module:hook("stanza/iq/jabber:iq:register:query", on_registration_requested, 1) -- vim: noexpandtab tabstop=4 shiftwidth=4