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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 = logging.handlers.SysLogHandler('/dev/log')
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):
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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(str('< ' + 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
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# 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(str('started'))
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(str('trying {}'.format(site)))
#self._log.info('trying {}'.format(site))
result = self._db.check(site, ip_address)
reply = None
#self._log.info(str('got {} lines from database'.format(len(result))))
#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(str('trying regexp "{}" versus "{}"'.format(row[1], url_path)))
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(str("can't compile regexp"))
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):
def loop(self):
while True:
line = self._queue.get()
if line == None:
break
#self._log.info(str('request: ' + line))
#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(str('bad request'))
self._log.info('bad request')
self.writeline(line)
def writeline(self, string):
self._log.info(str('> ' + string))
self._log.info('> ' + string)
self._stdout.put(string)
def loop(self):
pool = gevent.pool.Pool()
pool.spawn(self.check)
pool.join()
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