prosody
a9ad287c3388
util/random.lua
Software / code / prosody
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util/random.lua @ 11821:a9ad287c3388
core.moduleapi: Filter out unrelated direct replies to module:send_iq
This is primarily something that happens with an internal query to
mod_mam, which calls origin.send() several times with results, leading
to the first such result being treated as the final response and
resolving the promise.
Now, these responses pass trough to the underlying origin.send(), where
they can be caught. Tricky but not impossible. For remote queries, it's
even trickier, you would likely need to bind a resource or similar.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Fri, 24 Sep 2021 20:12:16 +0200 |
| parent | 10016:af8c514e5cf7 |
| child | 12446:e54b8a5e35ad |
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-- Prosody IM -- Copyright (C) 2008-2014 Matthew Wild -- Copyright (C) 2008-2014 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local ok, crand = pcall(require, "util.crand"); if ok then return crand; end local urandom, urandom_err = io.open("/dev/urandom", "r"); local function bytes(n) local data, err = urandom:read(n); if not data then if err then error("Unable to retrieve data from secure random number generator (/dev/urandom): "..tostring(err)); else error("Secure random number generator (/dev/urandom) returned an end-of-file condition"); end end return data; end if not urandom then function bytes() error("Unable to obtain a secure random number generator, please see https://prosody.im/doc/random ("..urandom_err..")"); end end return { bytes = bytes; _source = "/dev/urandom"; };
