259 lines
8.3 KiB
Python
259 lines
8.3 KiB
Python
import re
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import socket
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import time
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import thread
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import Queue
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from ssl import wrap_socket, CERT_NONE, CERT_REQUIRED, SSLError
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def decode(txt):
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for codec in ('utf-8', 'iso-8859-1', 'shift_jis', 'cp1252'):
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try:
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return txt.decode(codec)
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except UnicodeDecodeError:
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continue
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return txt.decode('utf-8', 'ignore')
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def censor(text):
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text = text.replace('\n', '').replace('\r', '')
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replacement = '[censored]'
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if 'censored_strings' in bot.config:
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words = map(re.escape, bot.config['censored_strings'])
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regex = re.compile('(%s)' % "|".join(words))
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text = regex.sub(replacement, text)
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return text
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class crlf_tcp(object):
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"Handles tcp connections that consist of utf-8 lines ending with crlf"
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def __init__(self, host, port, timeout=300):
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self.ibuffer = ""
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self.obuffer = ""
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self.oqueue = Queue.Queue() # lines to be sent out
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self.iqueue = Queue.Queue() # lines that were received
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self.socket = self.create_socket()
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self.host = host
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self.port = port
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self.timeout = timeout
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def create_socket(self):
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return socket.socket(socket.AF_INET, socket.TCP_NODELAY)
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def run(self):
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self.socket.connect((self.host, self.port))
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thread.start_new_thread(self.recv_loop, ())
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thread.start_new_thread(self.send_loop, ())
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def recv_from_socket(self, nbytes):
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return self.socket.recv(nbytes)
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def get_timeout_exception_type(self):
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return socket.timeout
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def handle_receive_exception(self, error, last_timestamp):
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if time.time() - last_timestamp > self.timeout:
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self.iqueue.put(StopIteration)
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self.socket.close()
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return True
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return False
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def recv_loop(self):
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last_timestamp = time.time()
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while True:
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try:
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data = self.recv_from_socket(4096)
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self.ibuffer += data
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if data:
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last_timestamp = time.time()
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else:
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if time.time() - last_timestamp > self.timeout:
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self.iqueue.put(StopIteration)
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self.socket.close()
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return
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time.sleep(1)
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except (self.get_timeout_exception_type(), socket.error) as e:
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if self.handle_receive_exception(e, last_timestamp):
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return
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continue
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while '\r\n' in self.ibuffer:
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line, self.ibuffer = self.ibuffer.split('\r\n', 1)
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self.iqueue.put(decode(line))
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def send_loop(self):
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while True:
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line = self.oqueue.get().splitlines()[0][:500]
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print ">>> %r" % line
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self.obuffer += line.encode('utf-8', 'replace') + '\r\n'
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while self.obuffer:
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sent = self.socket.send(self.obuffer)
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self.obuffer = self.obuffer[sent:]
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class crlf_ssl_tcp(crlf_tcp):
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"Handles ssl tcp connetions that consist of utf-8 lines ending with crlf"
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def __init__(self, host, port, ignore_cert_errors, timeout=300):
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self.ignore_cert_errors = ignore_cert_errors
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crlf_tcp.__init__(self, host, port, timeout)
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def create_socket(self):
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return wrap_socket(crlf_tcp.create_socket(self), server_side=False,
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cert_reqs=CERT_NONE if self.ignore_cert_errors else
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CERT_REQUIRED)
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def recv_from_socket(self, nbytes):
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return self.socket.read(nbytes)
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def get_timeout_exception_type(self):
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return SSLError
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def handle_receive_exception(self, error, last_timestamp):
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# this is terrible
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if not "timed out" in error.args[0]:
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raise
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return crlf_tcp.handle_receive_exception(self, error, last_timestamp)
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irc_prefix_rem = re.compile(r'(.*?) (.*?) (.*)').match
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irc_noprefix_rem = re.compile(r'()(.*?) (.*)').match
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irc_netmask_rem = re.compile(r':?([^!@]*)!?([^@]*)@?(.*)').match
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irc_param_ref = re.compile(r'(?:^|(?<= ))(:.*|[^ ]+)').findall
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class IRC(object):
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"handles the IRC protocol"
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# see the docs/ folder for more information on the protocol
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def __init__(self, server, nick, port=6667, channels=[], conf={}):
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self.channels = channels
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self.conf = conf
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self.server = server
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self.port = port
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self.nick = nick
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self.out = Queue.Queue() # responses from the server are placed here
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# format: [rawline, prefix, command, params,
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# nick, user, host, paramlist, msg]
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self.connect()
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thread.start_new_thread(self.parse_loop, ())
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def create_connection(self):
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return crlf_tcp(self.server, self.port)
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def connect(self):
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self.conn = self.create_connection()
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thread.start_new_thread(self.conn.run, ())
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self.set_pass(self.conf.get('server_password'))
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self.set_nick(self.nick)
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self.cmd("USER",
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[conf.get('user', 'skybot'), "3", "*", conf.get('realname',
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'Python bot - http://github.com/rmmh/skybot')])
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def parse_loop(self):
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while True:
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msg = self.conn.iqueue.get()
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if msg == StopIteration:
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self.connect()
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continue
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if msg.startswith(":"): # has a prefix
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prefix, command, params = irc_prefix_rem(msg).groups()
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else:
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prefix, command, params = irc_noprefix_rem(msg).groups()
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nick, user, host = irc_netmask_rem(prefix).groups()
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paramlist = irc_param_ref(params)
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lastparam = ""
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if paramlist:
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if paramlist[-1].startswith(':'):
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paramlist[-1] = paramlist[-1][1:]
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lastparam = paramlist[-1]
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self.out.put([msg, prefix, command, params, nick, user, host,
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paramlist, lastparam])
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if command == "PING":
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self.cmd("PONG", paramlist)
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def set_pass(self, password):
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if password:
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self.cmd("PASS", [password])
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def set_nick(self, nick):
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self.cmd("NICK", [nick])
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def join(self, channel):
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self.cmd("JOIN", channel.split(" ")) # [chan, password]
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def msg(self, target, text):
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self.cmd("PRIVMSG", [target, text])
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def cmd(self, command, params=None):
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if params:
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params[-1] = ':' + params[-1]
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self.send(command + ' ' + ' '.join(map(censor, params)))
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else:
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self.send(command)
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def send(self, str):
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self.conn.oqueue.put(str)
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class FakeIRC(IRC):
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def __init__(self, server, nick, port=6667, channels=[], conf={}, fn=""):
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self.channels = channels
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self.conf = conf
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self.server = server
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self.port = port
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self.nick = nick
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self.out = Queue.Queue() # responses from the server are placed here
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self.f = open(fn, 'rb')
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thread.start_new_thread(self.parse_loop, ())
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def parse_loop(self):
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while True:
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msg = decode(self.f.readline()[9:])
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if msg == '':
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print "!!!!DONE READING FILE!!!!"
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return
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if msg.startswith(":"): # has a prefix
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prefix, command, params = irc_prefix_rem(msg).groups()
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else:
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prefix, command, params = irc_noprefix_rem(msg).groups()
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nick, user, host = irc_netmask_rem(prefix).groups()
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paramlist = irc_param_ref(params)
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lastparam = ""
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if paramlist:
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if paramlist[-1].startswith(':'):
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paramlist[-1] = paramlist[-1][1:]
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lastparam = paramlist[-1]
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self.out.put([msg, prefix, command, params, nick, user, host,
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paramlist, lastparam])
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if command == "PING":
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self.cmd("PONG", [params])
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def cmd(self, command, params=None):
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pass
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class SSLIRC(IRC):
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def __init__(self, server, nick, port=6667, channels=[], conf={},
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ignore_certificate_errors=True):
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self.ignore_cert_errors = ignore_certificate_errors
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IRC.__init__(self, server, nick, port, channels, conf)
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def create_connection(self):
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return crlf_ssl_tcp(self.server, self.port, self.ignore_cert_errors)
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