else:
				self._config.set(self._section, name, None)
		return(self._config.get(self._section, name))

# initializing and reading in config file
config = Config()

# wrapper around syslog, can be muted
class Logger(object):
	__slots__ = frozenset(['_syslog'])

	def __init__(self):
		config.section('log')
		if config['silent'] == 'yes':
			self._syslog = None
		else:
			import syslog
			self._syslog = syslog
			self._syslog.openlog(str('squidTag'))

	def info(self, message):
		if self._syslog != None:
			self._syslog.syslog(self._syslog.LOG_INFO, message)

	def notice(self, message):
		if self._syslog != None:
			self._syslog.syslog(self._syslog.LOG_NOTICE, message)

logger = Logger()

# tiny wrapper around a file to make reads from it geventable
# or should i move this somewhere?

class FReadlineQueue(gevent.queue.Queue):
	# storing file descriptor, leftover
	__slots__ = frozenset(['_fd', '_tail'])

		if len(self._tail) > 0:
			rows[0] = self._tail + rows[0]
		# popping out last (incomplete) element
		self._tail = rows.pop(-1)
		# dropping all complete elements to the queue
		for row in rows:
			self.put_nowait(row)
			logger.info('request: ' + row)
		if len(buf) > 0:
			# no EOF, reinstalling event handler
			gevent.core.read_event(self._fd.fileno(), self._wait_helper)
		else:
			# EOF found, sending EOF to queue
			self.put_nowait(None)

# abstract class with basic checking functionality
class Checker(object):
	__slots__ = frozenset(['_db', '_log', '_queue', '_request', '_stdout'])

	def __init__(self, queue, logger):
		self._db = tagDB()
		self._log = logger
		self._log.info('started')
		self._request = re.compile('^([0-9]+)\ (http|ftp):\/\/([-\w.:]+)\/([^ ]*)\ ([0-9.]+)\/(-|[\w\.]+)\ (-|\w+)\ (-|GET|HEAD|POST).*$')
		self._queue = queue
		self._stdout = FWritelineQueue(sys.stdout, False)

	def process(self, id, site, ip_address, url_path, line = None):
		#self._log.info('trying {}'.format(site))
		result = self._db.check(site, ip_address)
		reply = None
		#self._log.info('got {} lines from database'.format(len(result)))
		for row in result:
			if row != None and row[0] != None:
				if row[1] != None:
					self._log.info('trying regexp "{}" versus "{}"'.format(row[1], url_path))
					try:
						if re.compile(row[1]).match(url_path):
							reply = row[0].format(url_path)
						else:
							continue
					except:
						self._log.info("can't compile regexp")
				else:
					reply = row[0].format(url_path)
			if reply != None:
				self.writeline('{} {}'.format(id, reply))
				return(True)
		self.writeline('{}'.format(id))

	def check(self):
		while True:
			line = self._queue.get()
			if line == None:
				break
			#self._log.info('request: ' + line)
			request = self._request.match(line)
			if request:
				id = request.group(1)
				#proto = request.group(2)
				site = request.group(3)
				url_path = request.group(4)
				ip_address = request.group(5)
				self.process(id, site, ip_address, url_path, line)
			else:
				self._log.info('bad request\n')
				self.writeline(line)

	def writeline(self, string):
		self._log.info('sending: ' + string)
		self._stdout.put(string)

	def loop(self):
		pool = gevent.pool.Pool()
		pool.spawn(self.check)
		pool.join()