autojoin -- IRC bot to autojoin a channel and quit on a particular PRIVMSG. Does not respond to PING :/

autojoiner.py

#!/usr/bin/env python

import socket
import select

class AutoJoiner:
    def __init__(self, server, port, nick, channel, deathmsg):
        self.sock = socket.socket()
        self.sock.connect((server, port))

        self.sock.sendall('NICK {0}\r\n'.format(nick))
        self.sock.sendall('USER autojoin 0 0 :AutoJoiner\r\n')

        self.buf = ['']

        self.channel = channel
        self.deathmsg = deathmsg

    def fileno(self):
        return self.sock.fileno()

    def dorecv(self):
        recv = self.sock.recv(1024)
        if recv == '':
            return False

        self.buf[-1] += recv.replace('\r', '')

        while '\n' in self.buf[-1]:
            before, sep, after = self.buf[-1].partition('\n')
            self.buf[-1:] = [before, after]

        retval = True
        for line in self.buf[:-1]:
            retval = self.recvline(line) and retval

        self.buf = self.buf[-1:]

        return retval

    def recvline(self, line):
        s = line.split()

        splitline = line
        if line[0] == ':':
            splitline = line[1:]
        msg = splitline.split(':', 1)
        if len(msg) > 1:
            msg = msg[1]
        else:
            msg = ''

        if s[1] == '001':
            self.sock.send('JOIN {0}\r\n'.format(self.channel))
        if s[1] == 'PRIVMSG' and msg == self.deathmsg:
            self.sock.send('QUIT :vanish!\r\n')
            self.sock.close()
            return False
        return True

if __name__ == "__main__":
    serv = raw_input("Enter server name (e.g. irc.freenode.net): ")
    port = raw_input("Enter port number (probably 6667): ")
    if port == '':
        port = 6667
    else:
        port = int(port)
    fix = raw_input("Nickname prefix: ")
    count = int(raw_input("Number of joiners to spawn (no more than 5): "))
    chan = raw_input("Channel to join: ")
    deathmsg = raw_input("Enter secret quit phrase: ")

    joiners = []
    for i in range(count):
        joiners.append(AutoJoiner(serv, port, '{0}-{1}'.format(fix, i), chan, deathmsg))

    while len(joiners) > 0:
        r, w, x = select.select(joiners, [], [])
        for joiner in r:
            if not joiner.dorecv():
                joiners.remove(joiner)