1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
#!/usr/bin/env python
#
# Given a DNS name and type, return the records in the DNS answer
# section only, excluding any RRSIG records.
#
import getdns, pprint, sys
extensions = { "dnssec_return_status" : getdns.EXTENSION_TRUE }
def get_rrtype(qtype):
try:
rrtype = eval("getdns.RRTYPE_%s" % qtype.upper())
except AttributeError:
print("Unknown DNS record type: {0}".format(qtype))
sys.exit(1)
else:
return rrtype
def print_answer(r):
pprint.pprint(r.replies_tree[0]['answer'])
return
if __name__ == '__main__':
qname, qtype = sys.argv[1:]
rrtype = get_rrtype(qtype)
ctx = getdns.Context()
try:
results = ctx.general(name=qname, request_type=rrtype,
extensions=extensions)
except getdns.error as e:
print(str(e))
sys.exit(1)
status = results.status
if status == getdns.RESPSTATUS_GOOD:
for reply in results.replies_tree:
answers = reply['answer'] # list of 1 here
for answer in answers:
if answer['type'] != getdns.RRTYPE_RRSIG:
pprint.pprint(answer)
elif status == getdns.RESPSTATUS_NO_NAME:
print("{0}, {1}: no such name".format(qname, qtype))
elif status == getdns.RESPSTATUS_ALL_TIMEOUT:
print("{0}, {1}: query timed out".format(qname, qtype))
else:
print("{0}, {1}: unknown return code: {2}".format(qname, qtype, results.status))
|
