prosody
24b55f0e2db9
util/human/units.lua

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util/human/units.lua @ 12790:24b55f0e2db9 0.12

mod_http: Allow disabling CORS in the http_cors_override option and by default Fixes #1779. Due to an oversight in the logic, if the user set 'enabled' to false in an override, it would disable the item's requested CORS settings, but still apply Prosody's default CORS policy. This change ensures that 'enabled = false' will now disable CORS entirely for the requested item. Due to the new structure of the code, it was necessary to have a flag to say whether CORS is to be applied at all. Rather than hard-coding 'true' here, I chose to add a new option: 'http_default_cors_enabled'. This is a boolean that allows the operator to disable Prosody's default CORS policy entirely (the one that is used when a module or config does not override it). This makes it easier to disable CORS and then selectively enable it only on services you want it on.
author Matthew Wild <mwild1@gmail.com>
date Mon, 31 Oct 2022 14:32:02 +0000
parent 10903:c5f26f9adb31
child 12573:0f4feaf9ca64
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rev   line source
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1 local math_abs = math.abs;
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2 local math_ceil = math.ceil;
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3 local math_floor = math.floor;
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4 local math_log = math.log;
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5 local math_max = math.max;
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6 local math_min = math.min;
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7 local unpack = table.unpack or unpack; --luacheck: ignore 113
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8
10890
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9 if math_log(10, 10) ~= 1 then
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10 -- Lua 5.1 COMPAT
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11 local log10 = math.log10;
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12 function math_log(n, base)
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13 return log10(n) / log10(base);
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14 end
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15 end
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16
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17 local large = {
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18 "k", 1000,
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19 "M", 1000000,
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20 "G", 1000000000,
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21 "T", 1000000000000,
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22 "P", 1000000000000000,
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23 "E", 1000000000000000000,
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24 "Z", 1000000000000000000000,
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25 "Y", 1000000000000000000000000,
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26 }
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27 local small = {
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28 "m", 0.001,
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29 "μ", 0.000001,
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30 "n", 0.000000001,
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31 "p", 0.000000000001,
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32 "f", 0.000000000000001,
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33 "a", 0.000000000000000001,
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34 "z", 0.000000000000000000001,
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35 "y", 0.000000000000000000000001,
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36 }
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37
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38 local binary = {
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39 "Ki", 2^10,
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40 "Mi", 2^20,
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41 "Gi", 2^30,
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42 "Ti", 2^40,
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43 "Pi", 2^50,
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44 "Ei", 2^60,
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45 "Zi", 2^70,
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46 "Yi", 2^80,
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47 }
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48
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49 local function adjusted_unit(n, b)
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50 local round = math_floor;
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51 local prefixes = large;
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52 local logbase = 1000;
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53 if b == 'b' then
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54 prefixes = binary;
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55 logbase = 1024;
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56 elseif n < 1 then
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57 prefixes = small;
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58 round = math_ceil;
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59 end
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60 local m = math_max(0, math_min(8, round(math_abs(math_log(math_abs(n), logbase)))));
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61 local prefix, multiplier = unpack(prefixes, m * 2-1, m*2);
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62 return multiplier or 1, prefix;
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63 end
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64
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65 -- n: number, the number to format
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66 -- unit: string, the base unit
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67 -- b: optional enum 'b', thousands base
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68 local function format(n, unit, b) --> string
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69 local fmt = "%.3g %s%s";
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70 if n == 0 then
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71 return fmt:format(n, "", unit);
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72 end
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73 local multiplier, prefix = adjusted_unit(n, b);
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74 return fmt:format(n / multiplier, prefix or "", unit);
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75 end
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76
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77 return {
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78 adjust = adjusted_unit;
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79 format = format;
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80 };