Created
July 3, 2019 03:25
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Bind9 Zone Directory Watcher
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import time | |
import os | |
import subprocess | |
import re | |
from watchdog.observers import Observer | |
from watchdog.events import FileSystemEventHandler | |
def outputCmd(cmd): | |
proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) | |
stdout,stderr = proc.communicate() | |
if stderr != None: | |
return stderr.decode('utf-8') | |
return stdout.decode('utf-8') | |
def outputLog(text): | |
logFile = '/var/log/watcher.log' | |
with open(logFile, 'a+') as f: | |
f.write(text) | |
class Watcher: | |
DIRECTORY_TO_WATCH = "/var/named/zones" | |
def __init__(self): | |
self.observer = Observer() | |
def run(self): | |
event_handler = Handler() | |
self.observer.schedule(event_handler, self.DIRECTORY_TO_WATCH, recursive=True) | |
self.observer.start() | |
try: | |
while True: | |
time.sleep(5) | |
except: | |
self.observer.stop() | |
print ("Error") | |
self.observer.join() | |
class Handler(FileSystemEventHandler): | |
@staticmethod | |
def on_any_event(event): | |
domain = os.path.basename(event.src_path).replace('.zone', '') | |
if event.is_directory: | |
return None | |
elif not re.match('^[a-zA-Z\d-]{,63}(\.[a-zA-Z\d-]{,5})$', domain): | |
return None | |
elif event.event_type == 'created': | |
outputLog('Created => ' + domain +'\n'+ outputCmd(['rndc', 'reconfig', ' ' + domain])) | |
elif event.event_type == 'deleted': | |
outputLog('Deleted => ' + domain +'\n'+ outputCmd(['rndc', 'delzone', ' ' + domain])) | |
if __name__ == '__main__': | |
w = Watcher() | |
w.run() |
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