hostnames registration application for I2P
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#!/usr/bin/python
import re
import os
import os.path
import sys
import errno
import time
import urllib2
import subprocess
import argparse
import configobj
# parse command line options
parser = argparse.ArgumentParser(
description='Hosts fetcher for py-i2phosts.',
epilog='Report bugs to http://zzz.i2p/topics/733')
parser.add_argument('-d', '--debug', action='store_true',
help='write debug messages to stdout instead of log file'),
parser.add_argument('-c', '--config', default='/etc/py-i2phosts/fetcher.conf', dest='config_file',
help='config file to use')
args = parser.parse_args()
# read config
config = configobj.ConfigObj(args.config_file, file_error=True)
if 'include' in config:
config_included = configobj.ConfigObj(config['include'])
config.merge(config_included)
if 'DJANGO_PROJECT_PATH' in config:
sys.path.insert(1, config['DJANGO_PROJECT_PATH'])
else:
sys.stderr.write('"DJANGO_PROJECT_PATH" is missing in config\n')
sys.exit(1)
from web.lib.utils import get_logger
# configure logger
if args.debug == True:
log_level = 'debug'
log_file = None
else:
log_level = config['log_level']
log_file = config['log_file']
log = get_logger(filename=log_file, log_level=log_level)
# we want open urls through proxy
if 'proxyurl' in config:
proxy_handler = urllib2.ProxyHandler({'http': config['proxyurl']})
else:
log.critical('"proxyurl" is missing in config')
sys.exit(1)
opener = urllib2.build_opener(proxy_handler)
if not 'sources' in config:
log.critical('"sources" is missing in config')
sys.exit(1)
# FIXME: use as_list() here
for source in config['sources']:
# cut hostname.i2p from url
source_hostname = re.sub(r'.*//(.+?)/.+', r'\1', source)
# use separate file for each host
filename = 'hosts.txt.' + source_hostname
# build last-modified info from file mtime
try:
mtime = os.path.getmtime(filename)
except OSError, e:
if e.errno == errno.ENOENT:
pass
else:
log.critical('fatal error: %s', e)
sys.exit(1)
else:
last_modified = time.strftime('%a, %d %b %Y %H:%M:%S GMT', time.localtime(mtime))
# prevent redownloading of hosts-file by passing If-Modified-Since http header
opener.addheaders = [('If-Modified-Since', last_modified)]
try:
log.debug('fetching hosts from: %s', source_hostname)
resp = opener.open(source, timeout=60)
except urllib2.URLError, e:
if hasattr(e, 'reason'):
log.warning('failed to reach server %s, reason: %s', source_hostname, e.reason)
elif hasattr(e, 'code'):
if e.code == 304:
log.info('%s: not modified', source_hostname)
else:
log.warning('server %s can\'t finish the request, error code: %s',
source_hostname, e.code)
continue
# read data from remote and write it to local file
try:
content = resp.read()
except:
log.warning('failed to read data from %s', source_hostname)
continue
f = open(filename, 'w')
f.write(content)
f.close()
# get last-modified info from header and change file's mtime
lm = resp.headers.get('Last-Modified')
log.debug('%s Last-Modified: %s', source_hostname, lm)
if lm:
target_mtime = int(time.mktime(time.strptime(lm, '%a, %d %b %Y %H:%M:%S GMT')))
os.utime(filename, (target_mtime, target_mtime))
# form commnd-line for invoke injector
path = os.path.dirname(sys.argv[0])
log.info('adding hosts from: %s', source_hostname)
sp_args = [path + '/py-i2phosts-injector', '-s', '-a', '-f', filename, '-d',
'Auto-added from ' + source_hostname]
p = subprocess.Popen(sp_args, shell=False, stdin=None,
stdout=None, stderr=subprocess.STDOUT)
p.wait()