Mercurial > prosody-hg

annotate util/id.lua @ 10801:2b97aac0ea3c

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mod_csi_simple: Don't consider presence errors as important A large share of `<presence type=error>` appears to be noise from large public channels and failed presence probes. The later at least should count as presence updates, which are currently considered unimportant. See also 8cecb85e4bc4 which is partly reverted here. The intent there was probably mostly about message (delivery) errors, which should be considered important.
author Kim Alvefur <zash@zash.se>
date Tue, 05 May 2020 23:08:47 +0200
parents 9546c629289b
children b5b799a2a10c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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9546c629289b util.id: New util for producing random identifiers of varying sizes
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2017 Matthew Wild
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3 -- Copyright (C) 2008-2017 Waqas Hussain
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4 -- Copyright (C) 2008-2017 Kim Alvefur
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5 --
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6 -- This project is MIT/X11 licensed. Please see the
9546c629289b util.id: New util for producing random identifiers of varying sizes
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7 -- COPYING file in the source package for more information.
9546c629289b util.id: New util for producing random identifiers of varying sizes
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8 --
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9
9546c629289b util.id: New util for producing random identifiers of varying sizes
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10 local s_gsub = string.gsub;
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11 local random_bytes = require "util.random".bytes;
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12 local base64_encode = require "util.encodings".base64.encode;
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13
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14 local b64url = { ["+"] = "-", ["/"] = "_", ["="] = "" };
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15 local function b64url_random(len)
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16 return (s_gsub(base64_encode(random_bytes(len)), "[+/=]", b64url));
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17 end
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18
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19 return {
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20 short = function () return b64url_random(6); end;
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21 medium = function () return b64url_random(12); end;
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22 long = function () return b64url_random(24); end;
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23 custom = function (size)
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24 return function () return b64url_random(size); end;
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25 end;
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26 }