| /* |
| * Copyright 2016, Joyent, Inc. All rights reserved. |
| * Author: Alex Wilson <alex.wilson@joyent.com> |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| module.exports = { |
| getPass: getPass |
| }; |
| |
| const mod_tty = require('tty'); |
| const mod_fs = require('fs'); |
| const mod_assert = require('assert-plus'); |
| |
| var BACKSPACE = String.fromCharCode(127); |
| var CTRLC = '\u0003'; |
| var CTRLD = '\u0004'; |
| |
| function getPass(opts, cb) { |
| if (typeof (opts) === 'function' && cb === undefined) { |
| cb = opts; |
| opts = {}; |
| } |
| mod_assert.object(opts, 'options'); |
| mod_assert.func(cb, 'callback'); |
| |
| mod_assert.optionalString(opts.prompt, 'options.prompt'); |
| if (opts.prompt === undefined) |
| opts.prompt = 'Password'; |
| |
| openTTY(function (err, rfd, wfd, rtty, wtty) { |
| if (err) { |
| cb(err); |
| return; |
| } |
| |
| wtty.write(opts.prompt + ':'); |
| rtty.resume(); |
| rtty.setRawMode(true); |
| rtty.resume(); |
| rtty.setEncoding('utf8'); |
| |
| var pw = ''; |
| rtty.on('data', onData); |
| |
| function onData(data) { |
| var str = data.toString('utf8'); |
| for (var i = 0; i < str.length; ++i) { |
| var ch = str[i]; |
| switch (ch) { |
| case '\r': |
| case '\n': |
| case CTRLD: |
| cleanup(); |
| cb(null, pw); |
| return; |
| case CTRLC: |
| cleanup(); |
| cb(new Error('Aborted')); |
| return; |
| case BACKSPACE: |
| pw = pw.slice(0, pw.length - 1); |
| break; |
| default: |
| pw += ch; |
| break; |
| } |
| } |
| } |
| |
| function cleanup() { |
| wtty.write('\r\n'); |
| rtty.setRawMode(false); |
| rtty.pause(); |
| rtty.removeListener('data', onData); |
| if (wfd !== undefined && wfd !== rfd) { |
| wtty.end(); |
| mod_fs.closeSync(wfd); |
| } |
| if (rfd !== undefined) { |
| rtty.end(); |
| mod_fs.closeSync(rfd); |
| } |
| } |
| }); |
| } |
| |
| function openTTY(cb) { |
| mod_fs.open('/dev/tty', 'r+', function (err, rttyfd) { |
| if ((err && (err.code === 'ENOENT' || err.code === 'EACCES')) || |
| (process.version.match(/^v0[.][0-8][.]/))) { |
| cb(null, undefined, undefined, process.stdin, |
| process.stdout); |
| return; |
| } |
| var rtty = new mod_tty.ReadStream(rttyfd); |
| mod_fs.open('/dev/tty', 'w+', function (err3, wttyfd) { |
| var wtty = new mod_tty.WriteStream(wttyfd); |
| if (err3) { |
| cb(err3); |
| return; |
| } |
| cb(null, rttyfd, wttyfd, rtty, wtty); |
| }); |
| }); |
| } |