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Add encoding/hash signature to JS files

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Reviewed By: tadeuzagallo

Differential Revision: D3241028

fb-gh-sync-id: 737ae64cf3a3f4f121076dbfe933d5fe71e07817
fbshipit-source-id: 737ae64cf3a3f4f121076dbfe933d5fe71e07817
This commit is contained in:
David Aurelio 2016-04-30 09:43:08 -07:00 committed by Facebook Github Bot 9
parent 8d3d8b3440
commit 34dd17cae5
2 changed files with 37 additions and 2 deletions
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6
local-cli/bundle/output/bundle.js
View File

@ -9,7 +9,7 @@
'use strict';
const Promise = require('promise');
const sign = require('../sign');
const hash = require('./hash');
const writeFile = require('./writeFile');
function buildBundle(packagerClient, requestOptions) {
@ -36,7 +36,9 @@ function saveBundleAndMap(bundle, options, log) {
log('finish');
log('Writing bundle output to:', bundleOutput);
const writeBundle = writeFile(bundleOutput, sign(codeWithMap.code), encoding);
const code = hash.appendToString(codeWithMap.code, encoding);
const writeBundle = writeFile(bundleOutput, code, encoding);
writeBundle.then(() => log('Done writing bundle output'));
if (sourcemapOutput) {

33
local-cli/bundle/output/hash.js Normal file
View File

@ -0,0 +1,33 @@
/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
'use strict';
const crypto = require('crypto');
const createHash = () => crypto.createHash('sha1');
const isUTF8 = encoding => /^utf-?8$/i.test(encoding);
exports.appendToString = (string, encoding) => {
const hash = createHash();
hash.update(string, encoding);
encoding = tryAsciiPromotion(string, encoding);
return string + formatSignature(encoding, hash);
};
function tryAsciiPromotion(string, encoding) {
if (!isUTF8(encoding)) { return encoding; }
for (let i = 0, n = string.length; i < n; i++) {
if (string.charCodeAt(i) > 0x7f) { return encoding; }
}
return 'ascii';
}
function formatSignature(encoding, hash) {
return `/*${encoding}:${hash.digest('hex')}*/`;
}