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