prosody
ddc07fb8dcd4
util/random.lua

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util/random.lua @ 9879:ddc07fb8dcd4 0.11

mod_mam: Perform message expiry based on building an index by date (backport of 39ee70fbb009 from trunk) For each day, store a set of users that have new messages. To expire messages, we collect the union of sets of users from dates that fall outside the cleanup range. The previous algoritm did not work well with many users, especially with the default settings.
author Kim Alvefur <zash@zash.se>
date Fri, 22 Mar 2019 17:32:56 +0100
parent 8243:292f61d9d30a
child 10014:5d2f7144fa12
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
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1 -- Prosody IM
bd812a7713ad 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
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
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3 -- Copyright (C) 2008-2014 Waqas Hussain
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
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4 --
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
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5 -- This project is MIT/X11 licensed. Please see the
bd812a7713ad 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.
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
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7 --
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
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8
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3d2c2f0809ee 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");
3d2c2f0809ee util.crand: C binding to one of OpenSSL, Linux getrandom() or OpenBSD arc4random() CSPRNG
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10 if ok then return crand; end
3d2c2f0809ee util.crand: C binding to one of OpenSSL, Linux getrandom() or OpenBSD arc4random() CSPRNG
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11
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51cf09bb74eb util.random: Restore friendlier error from 0.9/util.uuid
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12 local urandom, urandom_err = io.open("/dev/urandom", "r");
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13
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
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14 local function bytes(n)
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ae044691de0f util.random: Use /dev/urandom
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15 return urandom:read(n);
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16 end
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17
7114
51cf09bb74eb util.random: Restore friendlier error from 0.9/util.uuid
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parents: 7083
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18 if not urandom then
51cf09bb74eb util.random: Restore friendlier error from 0.9/util.uuid
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19 function bytes()
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20 error("Unable to obtain a secure random number generator, please see https://prosody.im/doc/random ("..urandom_err..")");
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parents: 7083
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21 end
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22 end
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23
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24 return {
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
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25 bytes = bytes;
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177873dc9cf3 util.random: Add a _source field to match util.crand
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26 _source = "/dev/urandom";
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27 };