asarfuckery/appasar/canary/app_bootstrap/windowsUtils.js
2019-01-18 18:51:44 +01:00

87 lines
No EOL
2.4 KiB
JavaScript

'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.spawn = spawn;
exports.spawnReg = spawnReg;
exports.addToRegistry = addToRegistry;
var _child_process = require('child_process');
var _child_process2 = _interopRequireDefault(_child_process);
var _path = require('path');
var _path2 = _interopRequireDefault(_path);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
const regExe = process.env.SystemRoot ? _path2.default.join(process.env.SystemRoot, 'System32', 'reg.exe') : 'reg.exe';
// Spawn a command and invoke the callback when it completes with an error
// and the output from standard out.
function spawn(command, args, callback) {
let stdout = '';
let spawnedProcess;
try {
// TODO: contrary to below, it should not throw any error
spawnedProcess = _child_process2.default.spawn(command, args);
} catch (err) {
// Spawn can throw an error
process.nextTick(() => {
if (callback != null) {
callback(err, stdout);
}
});
return;
}
// TODO: we need to specify the encoding for the data if we're going to concat it as a string
spawnedProcess.stdout.on('data', data => {
stdout += data;
});
let err = null;
// TODO: close event might not get called, we should
// callback on error https://nodejs.org/api/child_process.html#child_process_event_error
spawnedProcess.on('error', err => {
// TODO: there should always be an error
if (err != null) {
err = err;
}
});
// TODO: don't listen to close, but listen to exit instead
spawnedProcess.on('close', (code, signal) => {
if (err === null && code !== 0) {
err = new Error('Command failed: ' + (signal || code));
}
if (err != null) {
err.code = err.code || code;
err.stdout = err.stdout || stdout;
}
if (callback != null) {
callback(err, stdout);
}
});
}
// Spawn reg.exe and callback when it completes
function spawnReg(args, callback) {
return spawn(regExe, args, callback);
}
// TODO: since we're doing this one by one, we could have a more graceful way of processing the queue
// rather than mutating the array
function addToRegistry(queue, callback) {
if (queue.length === 0) {
return callback && callback();
}
const args = queue.shift();
args.unshift('add');
args.push('/f');
return spawnReg(args, () => addToRegistry(queue, callback));
}