55 lines
1.4 KiB
JavaScript
55 lines
1.4 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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if (possibleVersions == allVersions) {
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return [];
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} else {
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return possibleVersions;
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}
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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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