hostnames registration application for I2P
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#!/usr/bin/python
import os
import sys
import argparse
import datetime
import configobj
import socket
import time
# parse command line options
parser = argparse.ArgumentParser(
description='Hosts checker for py-i2phosts.',
epilog='Report bugs to http://zzz.i2p/topics/733')
parser.add_argument('-d', '--debug', action='store_true',
help='set loglevel to debug and write messages to stdout'),
parser.add_argument('-v', '--verbose', action='store_true',
help='set loglevel to info and write messages to stdout'),
parser.add_argument('-c', '--config', default='/etc/py-i2phosts/checker.conf', dest='config_file',
help='config file to use')
args = parser.parse_args()
# read config
spec = '''
log_file = string(default='/var/log/py-i2phosts/master.log')
log_level = option('debug', 'info', 'warning', 'error', 'critical', default='info')
lookup_retries = integer(1, 20, default=2)
'''
spec = spec.split('\n')
config = configobj.ConfigObj(args.config_file, configspec=spec)
if 'include' in config:
config_included = configobj.ConfigObj(config['include'])
config.merge(config_included)
# django setup
DJANGO_SETTINGS_MODULE = 'pyi2phosts.settings'
if 'DJANGO_PROJECT_PATH' in config:
DJANGO_PROJECT_PATH = config['DJANGO_PROJECT_PATH']
else:
DJANGO_PROJECT_PATH = os.path.dirname(sys.argv[0]) + '/..'
sys.path.insert(1, DJANGO_PROJECT_PATH)
os.environ['DJANGO_SETTINGS_MODULE'] = DJANGO_SETTINGS_MODULE
from pyi2phosts.postkey.models import i2phost
from pyi2phosts.lib.utils import get_logger
from pyi2phosts.lib.utils import validate_config
from pyi2phosts.lib.utils import get_b32
# validate config
validate_config(config)
# configure logger
if args.debug == True:
log_level = 'debug'
log_file = None
elif args.verbose == True:
log_level = 'info'
log_file = None
else:
log_level = config['log_level']
log_file = config['log_file']
log = get_logger(filename=log_file, log_level=log_level)
# determine BOB interface address
if 'bob_addr' in config:
bob_addr = config['bob_addr']
else:
log.warning('BOB address isn\'t specified in config, falling back to localhost')
bob_addr = '127.0.0.1:2827'
# split bob_addr to ip and port
bob_ip, bob_port = bob_addr.split(':')
# connect to BOB
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
s.connect((bob_ip, int(bob_port)))
# just receive BOB's greeting
time.sleep(1)
data = s.recv(512)
# make file object
f = s.makefile('r')
except socket.error, e:
log.error('failed to connect to BOB: %s', e)
sys.exit(1)
all_hosts = i2phost.objects.all().order_by('-activated', '-last_seen')
log.info('starting check')
for host in all_hosts:
log.debug('%s: testing...', host.name)
# get b32 address from full dest key
dest = host.b64hash
b32dest = get_b32(dest)
# do name lookup query with b32 address
# it success only if host is alive
for i in range(config['lookup_retries']):
s.send('lookup %s\n' % b32dest)
data = f.readline().rstrip('\n')
if data == 'ERROR Address Not found.':
log.debug('%s: unable to resolve, try: %s', host.name, i)
elif data == 'OK ' + host.b64hash:
log.info('alive host: %s', host.name)
# update lastseen timestamp
host.last_seen = datetime.datetime.utcnow()
host.save()
break
else:
log.warning('unexpected reply: %s', data)
s.close()
log.info('check finished')