prosody
91d36a37a9ff
util/random.lua

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util/random.lua @ 7171:91d36a37a9ff

Merge 0.10->trunk
author Kim Alvefur <zash@zash.se>
date Sun, 21 Feb 2016 16:54:56 +0100
parent 7114:51cf09bb74eb
child 7187:3d2c2f0809ee
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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
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3 -- Copyright (C) 2008-2014 Waqas Hussain
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
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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
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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
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7 --
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8
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51cf09bb74eb util.random: Restore friendlier error from 0.9/util.uuid
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9 local urandom, urandom_err = io.open("/dev/urandom", "r");
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10
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ac920b0f9eae util.random: Open /dev/urandom read-only, make seed() a noop
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11 local function seed()
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12 end
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13
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14 local function bytes(n)
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15 return urandom:read(n);
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16 end
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17
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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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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 seed = seed;
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26 bytes = bytes;
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27 };