prosody
87dd8639f08f
util/hex.lua

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util/hex.lua @ 13843:87dd8639f08f 13.0

mod_invites_register: Stricter validation of registration events This fixes two problems: 1) Account invites that were created with a specific username were not in fact restricted to that username. 2) Password reset invites were not restricted to resetting passwords, but could be used to create an arbitrary new account if the client or registration frontend (e.g. mod_invites_register_web) doesn't handle/enforce the username. This new validation ensures that registrations and resets are always for the username specified in the invitation.
author Matthew Wild <mwild1@gmail.com>
date Thu, 10 Apr 2025 16:07:32 +0100
parent 12355:a0ff5c438e9d
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76d8907d5301 util.hex: Small util lib for converting to/from hex strings
Matthew Wild <mwild1@gmail.com>
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1 local s_char = string.char;
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ec566d7cd518 util.hex: Pedantic optimization, 1 table lookup per byte instead of 3 function calls makes it go faster
Kim Alvefur <zash@zash.se>
parents: 6384
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2 local s_format = string.format;
ec566d7cd518 util.hex: Pedantic optimization, 1 table lookup per byte instead of 3 function calls makes it go faster
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3 local s_gsub = string.gsub;
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442019e955dc util.hex: Normalize hex to lowercase and discard non-hex input
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4 local s_lower = string.lower;
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5
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6 local char_to_hex = {};
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7 local hex_to_char = {};
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76d8907d5301 util.hex: Small util lib for converting to/from hex strings
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8
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ec566d7cd518 util.hex: Pedantic optimization, 1 table lookup per byte instead of 3 function calls makes it go faster
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parents: 6384
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9 do
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10 local char, hex;
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11 for i = 0,255 do
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12 char, hex = s_char(i), s_format("%02x", i);
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13 char_to_hex[char] = hex;
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14 hex_to_char[hex] = char;
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15 end
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76d8907d5301 util.hex: Small util lib for converting to/from hex strings
Matthew Wild <mwild1@gmail.com>
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16 end
76d8907d5301 util.hex: Small util lib for converting to/from hex strings
Matthew Wild <mwild1@gmail.com>
parents:
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17
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3f4809d01783 util.hex: Use locals!
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18 local function to(s)
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19 return (s_gsub(s, ".", char_to_hex));
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20 end
76d8907d5301 util.hex: Small util lib for converting to/from hex strings
Matthew Wild <mwild1@gmail.com>
parents:
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21
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22 local function from(s)
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23 return (s_gsub(s_lower(s), "%X*(%x%x)%X*", hex_to_char));
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24 end
76d8907d5301 util.hex: Small util lib for converting to/from hex strings
Matthew Wild <mwild1@gmail.com>
parents:
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25
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parents: 6802
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26 return {
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27 encode = to, decode = from;
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parents: 6802
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28 -- COMPAT w/pre-0.12:
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29 to = to, from = from;
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parents: 6802
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30 };