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1b68e9394b
See: https://github.com/resin-io/etcher/pull/1262#discussion_r110541438 Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>
70 lines
2.0 KiB
JavaScript
70 lines
2.0 KiB
JavaScript
/*
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* Copyright 2016 resin.io
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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const os = require('os');
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const Bluebird = require('bluebird');
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const childProcess = Bluebird.promisifyAll(require('child_process'));
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const _ = require('lodash');
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/**
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* @summary The user id of the UNIX "superuser"
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* @constant
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* @type {Number}
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*/
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const UNIX_SUPERUSER_USER_ID = 0;
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/**
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* @summary Check if the current process is running with elevated permissions
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* @function
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* @public
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*
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* @description
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* This function has been adapted from https://github.com/sindresorhus/is-elevated,
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* which was originally licensed under MIT.
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*
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* We're not using such module directly given that it
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* contains dependencies with dynamic undeclared dependencies,
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* causing a mess when trying to concatenate the code.
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*
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* @fulfil {Boolean} - whether the current process has elevated permissions
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* @returns {Promise}
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*
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* @example
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* permissions.isElevated().then((isElevated) => {
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* if (isElevated) {
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* console.log('This process has elevated permissions');
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* }
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* });
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*/
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exports.isElevated = () => {
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if (process.platform === 'win32') {
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// `fltmc` is available on WinPE, XP, Vista, 7, 8, and 10
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// Works even when the "Server" service is disabled
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// See http://stackoverflow.com/a/28268802
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return childProcess.execAsync('fltmc')
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.then(_.constant(true))
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.catch({
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code: os.constants.errno.EPERM
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}, _.constant(false));
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}
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return Bluebird.resolve(process.geteuid() === UNIX_SUPERUSER_USER_ID);
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};
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