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#! /usr/bin/env python
#
# //Reaktor/IRC/asybot.py
#
from asynchat import async_chat as asychat
from asyncore import loop
from socket import AF_INET, SOCK_STREAM,gethostname
from signal import SIGALRM, signal, alarm
from datetime import datetime as date, timedelta
from time import sleep
from sys import exit
from re import split, search, match
from textwrap import TextWrapper
import logging,logging.handlers
# s/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g -- removes color codes
class asybot(asychat):
def __init__(self, server, port, nickname, channels, realname=False, username=False, hostname=False, hammer_interval=10, alarm_timeout=300, kill_timeout=360, loglevel=logging.ERROR):
asychat.__init__(self)
#logger magic
self.log = logging.getLogger('asybot_' + nickname)
hdlr = logging.handlers.SysLogHandler(facility=logging.handlers.SysLogHandler.LOG_DAEMON)
formatter = logging.Formatter( '%(filename)s: %(levelname)s: %(message)s')
hdlr.setFormatter(formatter)
self.log.addHandler(hdlr)
logging.basicConfig(level = loglevel)
self.nickname = nickname
if realname:
self.realname = realname
else:
self.realname = nickname
if username:
self.username = username
else:
self.username = nickname
if hostname:
self.hostname = hostname
else:
self.hostname = nickname
self.retry = False
self.server = server
self.port = port
self.channels = channels
self.data = ''
self.myterminator = '\r\n'
self.set_terminator(self.myterminator.encode())
self.create_socket(AF_INET, SOCK_STREAM)
self.connect((self.server, self.port))
self.wrapper = TextWrapper(subsequent_indent=" ",width=400)
self.log.info('=> irc://%s@%s:%s/%s' % (self.nickname, self.server, self.port, self.channels))
# When we don't receive data for alarm_timeout seconds then issue a
# PING every hammer_interval seconds until kill_timeout seconds have
# passed without a message. Any incoming message will reset alarm.
self.alarm_timeout = alarm_timeout
self.hammer_interval = hammer_interval
self.kill_timeout = kill_timeout
try:
signal(SIGALRM, lambda signum, frame: self.alarm_handler())
except Exception as e:
print('asybot: ' + str(e))
self.reset_alarm()
def reset_alarm(self):
self.last_activity = date.now()
alarm(self.alarm_timeout)
def alarm_handler(self):
delta = date.now() - self.last_activity
if delta > timedelta(seconds=self.kill_timeout):
self.log.error('No data for %s. Giving up...' % delta)
self.handle_disconnect()
else:
self.log.error('No data for %s. PINGing server...' % delta)
self.push('PING :%s' % self.nickname)
alarm(self.hammer_interval)
def collect_incoming_data(self, data):
try:
self.data += data.decode()
except Exception as e:
print('error decoding message: ' + str(e));
def found_terminator(self):
self.log.debug('<< %s' % self.data)
message = self.data
self.data = ''
_, prefix, command, params, rest, _ = \
split('^(?::(\S+)\s)?(\S+)((?:\s[^:]\S*)*)(?:\s:(.*))?$', message)
params = params.split(' ')[1:]
if command == 'PING':
self.push('PONG :%s' % rest)
self.log.debug("Replying to servers PING with PONG :%s" %rest)
elif command == 'PRIVMSG':
self.on_privmsg(prefix, command, params, rest)
elif command == 'INVITE':
self.on_invite(prefix, command, params, rest)
elif command == 'KICK':
self.on_kick(prefix, command, params, rest)
elif command == '433':
# ERR_NICKNAMEINUSE, retry with another name
self.on_nickinuse(prefix, command, params, rest)
elif command == '376':
self.on_welcome(prefix, command, params, rest)
self.reset_alarm()
def push(self, message):
self.log.debug('>> %s' % message)
msg = (message + self.myterminator).encode()
self.log.debug('>> %s' % msg)
asychat.push(self, msg)
def disconnect(self):
self.push('QUIT')
self.close()
def reconnect(self):
if self.connected:
self.push('QUIT')
self.close()
self.create_socket(AF_INET, SOCK_STREAM)
self.connect((self.server, self.port))
def handle_connect(self):
self.push('NICK %s' % self.nickname)
self.push('USER %s %s %s :%s' %
(self.username, self.hostname, self.server, self.realname))
def handle_disconnect(self):
if self.retry:
self.reconnect()
else:
self.log.error('No retry set, giving up')
def PRIVMSG(self, target, text):
for line in self.wrapper.wrap(text):
msg = 'PRIVMSG %s :%s' % (','.join(target), line)
self.log.info(msg)
self.push(msg)
sleep(1)
def ME(self, target, text):
self.PRIVMSG(target, ('ACTION ' + text + ''))
def on_welcome(self, prefix, command, params, rest):
self.push('JOIN %s' % ','.join(self.channels))
def on_kick(self, prefix, command, params, rest):
self.log.debug(params)
if params[-1] == self.nickname:
for chan in params[:-1]:
self.channels.remove(chan)
def on_privmsg(self, prefix, command, params, rest):
pass
def on_invite(self, prefix, command, params, rest):
pass
def on_nickinuse(self, prefix, command, params, rest):
_, nickname, int, _ = split('^.*[^0-9]([0-9]+)$', self.nickname) \
if search('[0-9]$', self.nickname) \
else ['', self.nickname, 0, '']
self.nickname = nickname + str(int + 1)
self.handle_connect()
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