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

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

import logging, logging.handlers

# wrapper around logging handler to make it queue records and don't stall when sending them

class SysLogHandlerQueue(logging.handlers.SysLogHandler):
	__slots__ = frozenset(['_event', '_tail', '_workers'])

	def __init__(self):
		logging.handlers.SysLogHandler.__init__(self, '/dev/log')
		self._event = gevent.event.Event()
		self._event.set()
		self._tail = gevent.queue.Queue()
		self._workers = set()

	def emit(self, record):
		# my syslog is broken and cannot into UTF-8 BOM
		record.msg = str(record.msg)
		self._tail.put(record)
		if self._tail.qsize() != 0:
			# in case queue is empty we will spawn new worker
			# all workers are logged so we can kill them on close()
			self._workers.add(gevent.spawn(self._writer))

	def _writer(self):
		# here we are locking the queue so we can be sure we are the only one
		self._event.wait()
		self._event.clear()
		while not self._tail.empty():
			logging.handlers.SysLogHandler.emit(self, self._tail.get())
		self._event.set()
		self._workers.remove(gevent.getcurrent())

	def close(self):
		for worker in self._workers:
			gevent.kill(worker)
		logging.handlers.SysLogHandler.close(self)

logger = logging.getLogger('squidTag')
logger.setLevel(logging.INFO)
handler = SysLogHandlerQueue()
handler.setFormatter(logging.Formatter(str('squidTag[%(process)s]: %(message)s')))
logger.addHandler(handler)

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

class FReadlineQueue(gevent.queue.Queue):

		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('< ' + 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)

stdin = FReadlineQueue(sys.stdin)

# wrapper against file handler that makes possible to queue some writes without stalling

class FWritelineQueue(gevent.queue.JoinableQueue):
	# storing fileno, io interface, leftover
	__slots__ = frozenset(['_fileno', '_io', '_tail'])

	def __init__(self, fd, closefd = True):
		import io

# 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 loop(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')
				self.writeline(line)

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






if config.options.dump or config.options.load or config.options.dump_conf or config.options.load_conf:
	import csv

	tagdb = tagDB()
	data_fields = ['site', 'tag', 'regexp']
	conf_fields = ['netmask', 'redirect_url', 'from_weekday', 'to_weekday', 'from_time', 'to_time', 'tag']