Commit 34a90b72 authored by PhoeniX's avatar PhoeniX

Initial commit

parents
The MIT License (MIT)
=====================
Copyright © 2016 Yury Popov
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.
# Certificate common names extract library
[![NPM version](https://badge.fury.io/js/certnames.svg)](https://www.npmjs.com/package/certnames)
[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](http://standardjs.com/)
This module provides API to get SSL certificate common names list.
## Usage
```javascript
const certnames = require('certnames')
const tls = require('tls')
const host = 'comodo.com'
const sock = tls.connect(443, host)
sock.on('secureConnect', () => {
const cert = sock.getPeerCertificate().raw
const names = certnames.getCommonNames(cert)
console.log('Common names: %j', names)
// Common names: ["ssl383141.cloudflaressl.com","*.comodo.com","comodo.com"]
const regex = certnames.toRegEx(names)
console.log('Regex: %s', regex)
// Regex: /^((ssl383141\.cloudflaressl\.com)|(([^\.]+\.)?(comodo\.com)))$/gm
})
```
## API
### getCommonNames(buffer[, encoding])
Extracts common names (with "alternative" if present) from buffer. Both `der` and `pem` encodings supported.
### toRegEx(names)
Generates regular expression that match any of common name extracted before. Supports RegEx simplification, so wildcard and non-wildcard domains are grouped into single expression.
## Thanks to
* [Fedor Indutny](https://github.com/indutny)<br>
For powerful ASN.1 parser library
## LICENSE
This software is licensed under the MIT License.
Copyright Yury Popov _a.k.a. [PhoeniX](https://phoenix.dj)_, 2016.
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.
\ No newline at end of file
'use strict'
const asn1 = require('asn1.js')
const asn1Cert = require('asn1.js-rfc3280')
const ASNStr = asn1.define('ASNStr', function () {
this.choice({
bit: this.bitstr(),
bmp: this.bmpstr(),
chr: this.charstr(),
gen: this.genstr(),
grp: this.graphstr(),
ia5: this.ia5str(),
iso: this.iso646str(),
num: this.numstr(),
oct: this.octstr(),
prt: this.printstr(),
t61: this.t61str(),
uni: this.unistr(),
utf: this.utf8str(),
vid: this.videostr()
})
})
function getCommonNames (buffer, encoding) {
if (encoding === undefined) {
encoding = (/^\s*-----\s*BEGIN/.test(buffer.toString())) ? 'pem' : 'der'
}
const cert = asn1Cert.Certificate.decode(buffer, encoding, {label: 'CERTIFICATE'})
var names = []
cert.tbsCertificate.subject.value.forEach((e) => {
if (e[0].type.join('.') !== '2.5.4.3') return
names.push(ASNStr.decode(e[0].value).value)
})
cert.tbsCertificate.extensions.forEach((e) => {
if (e.extnID.join('.') !== '2.5.29.17') return
names.push.apply(names, asn1Cert.GeneralNames.decode(e.extnValue).map((e) => {
switch (e.type) {
case 'dNSName':
return e.value
case 'iPAddress':
return [e.value[0], e.value[1], e.value[2], e.value[3]].join('.')
default:
console.log('Unknown type: %s', e.type)
return null
}
}))
})
return names.filter((e, i, s) => {
if (e === null) return false
return s.indexOf(e) === i
})
}
function toRegEx (names) {
const domains = { wc: [], single: [], both: [] }
names.forEach((e) => {
var wc = false
if (e[0] === '*') {
wc = true
e = e.split('.').splice(1).join('.')
}
e = e.replace(/\./g, '\\.')
if (wc) domains.wc.push(e)
else domains.single.push(e)
})
domains.wc = domains.wc.filter((e) => {
const idx = domains.single.indexOf(e)
if (idx === -1) return true
domains.single.splice(idx, 1)
domains.both.push(e)
return false
})
const entries = []
if (domains.single.length > 0) {
entries.push(domains.single.join('|'))
}
if (domains.wc.length > 0) {
entries.push('[^\\.]+\\.(' + domains.wc.join('|') + ')')
}
if (domains.both.length > 0) {
entries.push('([^\\.]+\\.)?(' + domains.both.join('|') + ')')
}
return new RegExp('^((' + entries.join(')|(') + '))$', 'gm')
}
exports.getCommonNames = getCommonNames
exports.toRegEx = toRegEx
{
"name": "certnames",
"version": "1.0.0",
"description": "Export certificate common names from buffer",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"repository": {
"type": "git",
"url": "https://git.phoenix.dj/phoenix/node-certnames.git"
},
"keywords": [
"x509",
"certificate",
"asn1"
],
"author": "PhoeniX",
"license": "MIT",
"dependencies": {
"asn1.js": "^4.6.2",
"asn1.js-rfc3280": "^4.0.0"
}
}
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment