-
Notifications
You must be signed in to change notification settings - Fork 5
/
Copy pathADNS.py
71 lines (54 loc) · 2.2 KB
/
ADNS.py
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
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
#!/usr/bin/python
"""High-level interface to adns."""
import adns
from exceptions import Exception
class Error(Exception): pass
class QueryEngine:
callback_submit = None
callback_submit_reverse = None
callback_submit_reverse_any = None
def __init__(self, s=None):
self._s = s or adns.init(adns.iflags.noautosys)
self._queries = {}
def synchronous(self, qname, rr, flags=0):
return self._s.synchronous(qname, rr, flags)
def submit(self, qname, rr, flags=0, callback=None, extra=None):
callback = callback or self.callback_submit
if not callback: raise Error, "callback required"
q = self._s.submit(qname, rr, flags)
self._queries[q] = qname, rr, flags, callback, extra
def submit_reverse(self, qname, rr, flags=0, callback=None, extra=None):
callback = callback or self.callback_submit_reverse
if not callback: raise Error, "callback required"
q = self._s.submit_reverse(qname, rr, flags)
self._queries[q] = qname, rr, flags, callback, extra
def submit_reverse_any(self, qname, rr, flags=0,
callback=None, extra=None):
callback = callback or self.callback_submit_reverse_any
if not callback: raise Error, "callback required"
q = self._s.submit_reverse_any(qname, rr, flags)
self._queries[q] = qname, rr, flags, callback, extra
def cancel(self, query):
query.cancel()
try: del self._queries[query]
except KeyError: pass
def run(self, timeout=0):
for q in self._s.completed(timeout):
answer = q.check()
qname, rr, flags, callback, extra = self._queries[q]
del self._queries[q]
apply(callback, (answer, qname, rr, flags, extra))
def finished(self):
return not len(self._queries)
def finish(self):
while not self.finished():
self.run(1)
def run_max(self, max):
from time import time
quittime = time()+max
while not self.finished() and time()<=quittime:
self.run(1)
def globalsystemfailure(self):
self._s.globalsystemfailure()
self._queries.clear()
init = QueryEngine