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#!/usr/bin/python
'''
dnssec-valid.py: DNSSEC validation
Authors: Zdenek Vasicek (vasicek AT fit.vutbr.cz)
Marek Vavrusa (xvavru00 AT stud.fit.vutbr.cz)
Copyright (c) 2008. All rights reserved.
This software is open source.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
'''
import os
from unbound import ub_ctx,RR_TYPE_A,RR_CLASS_IN
ctx = ub_ctx()
ctx.resolvconf("/etc/resolv.conf")
fw = open("dnssec-valid.txt","wb")
ctx.debugout(fw)
ctx.debuglevel(2)
if os.path.isfile("keys"):
ctx.add_ta_file("keys") #read public keys for DNSSEC verificatio
status, result = ctx.resolve("www.nic.cz", RR_TYPE_A, RR_CLASS_IN)
if status == 0 and result.havedata:
print("Result:", result.data.address_list)
if result.secure:
print("Result is secure")
elif result.bogus:
print("Result is bogus")
else:
print("Result is insecure")
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