1.. _example_examine:
2
3==============================
4DNSSEC validator
5==============================
6
7This example program performs DNSSEC validation of a DNS lookup.
8
9::
10
11	#!/usr/bin/python
12	import os
13	from unbound import ub_ctx,RR_TYPE_A,RR_CLASS_IN
14	
15	ctx = ub_ctx()
16	ctx.resolvconf("/etc/resolv.conf")
17	if (os.path.isfile("keys")):
18		ctx.add_ta_file("keys") #read public keys for DNSSEC verification
19	
20	status, result = ctx.resolve("www.nic.cz", RR_TYPE_A, RR_CLASS_IN)
21	if status == 0 and result.havedata:
22	
23	    print "Result:", result.data.address_list
24	
25	    if result.secure:
26	        print "Result is secure"
27	    elif result.bogus:
28	        print "Result is bogus"
29	    else:
30	        print "Result is insecure"
31
32More detailed informations can be seen in libUnbound DNSSEC tutorial `here`_.
33
34.. _here: http://www.unbound.net/documentation/libunbound-tutorial-6.html
35