51 lines
1.3 KiB
JavaScript
51 lines
1.3 KiB
JavaScript
const DB = require("electron-fingerprints");
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const fs = require("fs");
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const hasha = require('hasha');
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const allVersions = require('./versions')['all']
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function checksumFile(algorithm, path) {
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return new Promise(function (resolve, reject) {
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let fs = require('fs');
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let crypto = require('crypto');
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let hash = crypto.createHash(algorithm).setEncoding('hex');
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fs.createReadStream(path)
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.once('error', reject)
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.pipe(hash)
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.once('finish', function () {
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resolve(hash.read());
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});
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});
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}
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module.exports = {
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guessFromHashes: function(os, arch, hashList) {
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let lookupTable = DB[`${os}-${arch}`];
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let allPossibleHashes = Object.keys(lookupTable);
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const intersectingHashes = allPossibleHashes.filter((value) =>
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hashList.includes(value)
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);
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// Set it to the starting list of versions.
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let possibleVersions = allVersions;
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for (i in hashList) {
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let hash = hashList[i];
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let versions = lookupTable[hash];
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if (versions) {
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possibleVersions = possibleVersions.filter((value) =>
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versions.includes(value)
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);
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}
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}
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return possibleVersions;
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},
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getHashes: function(dir) {
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let list = fs.readdirSync(dir);
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return list.map((f) => {
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let fn = `${dir}/${f}`;
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return hasha.fromFileSync(fn, {algorithm: 'sha1'})
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})
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},
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};
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