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util/random.lua @ 12187:94253e02d47d
mod_http: Limit unencrypted http port (5280) to loopback by default
Since accessing this port directly over the wider Internet is unlikely
to intentional anymore. Most uses will likely be by reverse proxies, by
mistake or because of trouble configuring HTTPS.
Blocking mistaken uses is just a good thing, letting users send
potentially private things unencrypted tends to be Strongly Discouraged
these days.
Many reverse proxy setups operate over loopback, so listening there
instead of all interfaces is a net improvement.
Improved automatic certificate location and SNI support has mostly
eliminated the need for manual certificate configuration so HTTPS should
Just Work once certificates have been provided.
For local testing during development, connecting over loopback is likely
fine as well. When really needed, `http_interfaces` can still be set.
Suggested by Link Mauve
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 15 Jan 2022 15:13:41 +0100 |
parent | 10016:af8c514e5cf7 |
child | 12446:e54b8a5e35ad |
rev | line source |
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util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
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1 -- Prosody IM |
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util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
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2 -- Copyright (C) 2008-2014 Matthew Wild |
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util.random: Generic util lib for generating strings of random bytes
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3 -- Copyright (C) 2008-2014 Waqas Hussain |
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util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
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4 -- |
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util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
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5 -- This project is MIT/X11 licensed. Please see the |
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util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
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6 -- COPYING file in the source package for more information. |
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util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
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7 -- |
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util.random: Generic util lib for generating strings of random bytes
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8 |
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util.crand: C binding to one of OpenSSL, Linux getrandom() or OpenBSD arc4random() CSPRNG
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9 local ok, crand = pcall(require, "util.crand"); |
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10 if ok then return crand; end |
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11 |
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util.random: Restore friendlier error from 0.9/util.uuid
Kim Alvefur <zash@zash.se>
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12 local urandom, urandom_err = io.open("/dev/urandom", "r"); |
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util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
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13 |
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util.random: Generic util lib for generating strings of random bytes
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14 local function bytes(n) |
10014
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util.random: Handle unlikely read errors from /dev/urandom (see #1313)
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15 local data, err = urandom:read(n); |
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16 if not data then |
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util.random: Throw different error for EOL condition
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17 if err then |
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18 error("Unable to retrieve data from secure random number generator (/dev/urandom): "..tostring(err)); |
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19 else |
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20 error("Secure random number generator (/dev/urandom) returned an end-of-file condition"); |
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21 end |
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22 end |
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23 return data; |
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24 end |
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util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
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25 |
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util.random: Restore friendlier error from 0.9/util.uuid
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parents:
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26 if not urandom then |
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parents:
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27 function bytes() |
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28 error("Unable to obtain a secure random number generator, please see https://prosody.im/doc/random ("..urandom_err..")"); |
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29 end |
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30 end |
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31 |
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32 return { |
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33 bytes = bytes; |
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util.random: Add a _source field to match util.crand
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34 _source = "/dev/urandom"; |
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35 }; |