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https://github.com/alexgo-io/stacks-puppet-node.git
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85 lines
2.5 KiB
Python
85 lines
2.5 KiB
Python
#!/usr/bin/env python2
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# -*- coding: utf-8 -*-
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"""
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Blockstack Core
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~~~~~
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copyright: (c) 2014-2017 by Blockstack Inc.
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copyright: (c) 2017 by Blockstack.org
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This file is part of Blockstack Core.
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Blockstack Core is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Blockstack Core is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Blockstack Core. If not, see <http://www.gnu.org/licenses/>.
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"""
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import socket
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import dns.resolver
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DNS_SERVERS = ['8.8.8.8', '8.8.4.4'] # use a Google DNS servers as default
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DKIM_RECORD_PREFIX = 'blockchainid._domainkey.'
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ADDITIONAL_RDCLASS = 65535
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def dns_resolver(domain):
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import dns.name
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import dns.message
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import dns.query
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import dns.flags
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domain = dns.name.from_text(domain)
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if not domain.is_absolute():
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domain = domain.concatenate(dns.name.root)
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request = dns.message.make_query(domain, dns.rdatatype.TXT)
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request.flags |= dns.flags.AD
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request.find_rrset(request.additional, dns.name.root, ADDITIONAL_RDCLASS,
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dns.rdatatype.OPT, create=True, force_unique=True)
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data = dns.query.udp(request, DNS_SERVERS[0])
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return data.to_text()
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def parse_pubkey_from_data(data):
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public_key = key_type = key_curve = None
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data = data.split('\n')
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for entry in data:
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if "DKIM" in entry:
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data = entry.split(' ')
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for entry in data:
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if "p=" in entry:
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public_key = entry.split("p=")[1]
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public_key = public_key[:-1]
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if "k=" in entry:
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key_type = entry.split("k=")[1]
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key_type = key_type[:-1]
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if "n=" in entry:
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key_curve = entry.split("n=")[1]
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key_curve = key_curve[:-1]
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return {
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'public_key': public_key,
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'key_type': key_type,
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'key_curve': key_curve
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}
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if __name__ == '__main__':
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test_domain = DKIM_RECORD_PREFIX + 'onename.com'
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dns_data = dns_resolver(test_domain)
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public_key = parse_pubkey_from_data(dns_data)
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print public_key
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