source: trip-planner-front/node_modules/getpass/lib/index.js@ e29cc2e

Last change on this file since e29cc2e was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 3.2 KB
Line 
1/*
2 * Copyright 2016, Joyent, Inc. All rights reserved.
3 * Author: Alex Wilson <alex.wilson@joyent.com>
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to
7 * deal in the Software without restriction, including without limitation the
8 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
9 * sell copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22*/
23
24module.exports = {
25 getPass: getPass
26};
27
28const mod_tty = require('tty');
29const mod_fs = require('fs');
30const mod_assert = require('assert-plus');
31
32var BACKSPACE = String.fromCharCode(127);
33var CTRLC = '\u0003';
34var CTRLD = '\u0004';
35
36function getPass(opts, cb) {
37 if (typeof (opts) === 'function' && cb === undefined) {
38 cb = opts;
39 opts = {};
40 }
41 mod_assert.object(opts, 'options');
42 mod_assert.func(cb, 'callback');
43
44 mod_assert.optionalString(opts.prompt, 'options.prompt');
45 if (opts.prompt === undefined)
46 opts.prompt = 'Password';
47
48 openTTY(function (err, rfd, wfd, rtty, wtty) {
49 if (err) {
50 cb(err);
51 return;
52 }
53
54 wtty.write(opts.prompt + ':');
55 rtty.resume();
56 rtty.setRawMode(true);
57 rtty.resume();
58 rtty.setEncoding('utf8');
59
60 var pw = '';
61 rtty.on('data', onData);
62
63 function onData(data) {
64 var str = data.toString('utf8');
65 for (var i = 0; i < str.length; ++i) {
66 var ch = str[i];
67 switch (ch) {
68 case '\r':
69 case '\n':
70 case CTRLD:
71 cleanup();
72 cb(null, pw);
73 return;
74 case CTRLC:
75 cleanup();
76 cb(new Error('Aborted'));
77 return;
78 case BACKSPACE:
79 pw = pw.slice(0, pw.length - 1);
80 break;
81 default:
82 pw += ch;
83 break;
84 }
85 }
86 }
87
88 function cleanup() {
89 wtty.write('\r\n');
90 rtty.setRawMode(false);
91 rtty.pause();
92 rtty.removeListener('data', onData);
93 if (wfd !== undefined && wfd !== rfd) {
94 wtty.end();
95 mod_fs.closeSync(wfd);
96 }
97 if (rfd !== undefined) {
98 rtty.end();
99 mod_fs.closeSync(rfd);
100 }
101 }
102 });
103}
104
105function openTTY(cb) {
106 mod_fs.open('/dev/tty', 'r+', function (err, rttyfd) {
107 if ((err && (err.code === 'ENOENT' || err.code === 'EACCES')) ||
108 (process.version.match(/^v0[.][0-8][.]/))) {
109 cb(null, undefined, undefined, process.stdin,
110 process.stdout);
111 return;
112 }
113 var rtty = new mod_tty.ReadStream(rttyfd);
114 mod_fs.open('/dev/tty', 'w+', function (err3, wttyfd) {
115 var wtty = new mod_tty.WriteStream(wttyfd);
116 if (err3) {
117 cb(err3);
118 return;
119 }
120 cb(null, rttyfd, wttyfd, rtty, wtty);
121 });
122 });
123}
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