57 lines
2.1 KiB
Python
57 lines
2.1 KiB
Python
#!/usr/bin/python
|
|
'''
|
|
async-lookup.py : This example shows how to use asynchronous lookups
|
|
|
|
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 unbound
|
|
import time
|
|
|
|
ctx = unbound.ub_ctx()
|
|
ctx.resolvconf("/etc/resolv.conf")
|
|
|
|
def call_back(my_data,status,result):
|
|
print("Call_back:", my_data)
|
|
if status == 0 and result.havedata:
|
|
print("Result:", result.data.address_list)
|
|
my_data['done_flag'] = True
|
|
|
|
|
|
my_data = {'done_flag':False,'arbitrary':"object"}
|
|
status, async_id = ctx.resolve_async("www.nic.cz", my_data, call_back, unbound.RR_TYPE_A, unbound.RR_CLASS_IN)
|
|
|
|
while (status == 0) and (not my_data['done_flag']):
|
|
status = ctx.process()
|
|
time.sleep(0.1)
|
|
|
|
if (status != 0):
|
|
print("Resolve error:", unbound.ub_strerror(status))
|