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112cc7c275
This changes the primordials to expose built-in prototypes with their methods already uncurried. The uncurryThis function is therefore moved to the primordials. All uses of uncurryThis on built-ins are changed to import the relevant prototypes from primordials. All uses of Function.call.bind are also changed to use primordials. PR-URL: https://github.com/nodejs/node/pull/27096 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
68 lines
1.8 KiB
JavaScript
68 lines
1.8 KiB
JavaScript
'use strict';
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// Value of https://w3c.github.io/webappsec-subresource-integrity/#the-integrity-attribute
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const {
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Object,
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RegExpPrototype,
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StringPrototype
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} = primordials;
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// Returns [{algorithm, value (in base64 string), options,}]
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const {
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ERR_SRI_PARSE
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} = require('internal/errors').codes;
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const kWSP = '[\\x20\\x09]';
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const kVCHAR = '[\\x21-\\x7E]';
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const kHASH_ALGO = 'sha256|sha384|sha512';
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// Base64
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const kHASH_VALUE = '[A-Za-z0-9+/]+[=]{0,2}';
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const kHASH_EXPRESSION = `(${kHASH_ALGO})-(${kHASH_VALUE})`;
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const kOPTION_EXPRESSION = `(${kVCHAR}*)`;
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const kHASH_WITH_OPTIONS = `${kHASH_EXPRESSION}(?:[?](${kOPTION_EXPRESSION}))?`;
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const kSRIPattern = new RegExp(`(${kWSP}*)(?:${kHASH_WITH_OPTIONS})`, 'g');
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const { freeze } = Object;
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Object.seal(kSRIPattern);
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const kAllWSP = new RegExp(`^${kWSP}*$`);
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Object.seal(kAllWSP);
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const BufferFrom = require('buffer').Buffer.from;
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const parse = (str) => {
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kSRIPattern.lastIndex = 0;
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let prevIndex = 0;
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let match;
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const entries = [];
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while (match = RegExpPrototype.exec(kSRIPattern, str)) {
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if (match.index !== prevIndex) {
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throw new ERR_SRI_PARSE(str, prevIndex);
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}
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if (entries.length > 0 && match[1] === '') {
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throw new ERR_SRI_PARSE(str, prevIndex);
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}
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// Avoid setters being fired
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Object.defineProperty(entries, entries.length, {
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enumerable: true,
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configurable: true,
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value: freeze({
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__proto__: null,
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algorithm: match[2],
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value: BufferFrom(match[3], 'base64'),
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options: match[4] === undefined ? null : match[4],
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})
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});
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prevIndex = prevIndex + match[0].length;
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}
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if (prevIndex !== str.length) {
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if (!RegExpPrototype.test(kAllWSP, StringPrototype.slice(str, prevIndex))) {
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throw new ERR_SRI_PARSE(str, prevIndex);
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}
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}
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return entries;
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};
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module.exports = {
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parse,
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};
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