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Change regular expression for createRegex() function

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Dorian Niemiec 2024-08-27 12:06:23 +02:00
parent fae1b661ed
commit ff66e26af0
1 changed files with 5 additions and 1 deletions
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6
src/utils/createRegex.js
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@ -1,7 +1,11 @@
const os = require("os"); const os = require("os");
function createRegex(regex, isPath) { function createRegex(regex, isPath) {
const regexStrMatch = regex.match(/^\/((?:\\.|[^/\\])*)\/([a-zA-Z0-9]*)$/); // The new regular expression supports single unescaped "/" within [], but not two unescaped "/".
// We needed to do it, because it's very hard to create the regex that matches two unescaped "/" within "[]" without ReDoS.
const regexStrMatch = regex.match(
/^\/((?:\\.|\/+(?:(?:\\.|[^\]\\/])*\])|[^/\\])*)\/([a-zA-Z0-9]*)$/,
);
if (!regexStrMatch) throw new Error("Invalid regular expression: " + regex); if (!regexStrMatch) throw new Error("Invalid regular expression: " + regex);
const searchString = regexStrMatch[1]; const searchString = regexStrMatch[1];
let modifiers = regexStrMatch[2]; let modifiers = regexStrMatch[2];