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Certificate common names extract library

NPM

npm npm js-standard-style npm build

This module provides API to get SSL certificate common names list.

Usage

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

LICENSE

This software is licensed under the MIT License.

Copyright Yury Popov a.k.a. PhoeniX, 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.

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