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[Contribs] Add simple IRC bot for looking up error codes.
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#!/usr/bin/env python | ||
# Copyright (C) 2008 Stefan Hajnoczi <stefanha@gmail.com>. | ||
# | ||
# This program is free software; you can redistribute it and/or | ||
# modify it under the terms of the GNU General Public License as | ||
# published by the Free Software Foundation; either version 2 of the | ||
# License, or any later version. | ||
# | ||
# This program is distributed in the hope that it will be useful, but | ||
# WITHOUT ANY WARRANTY; without even the implied warranty of | ||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
# General Public License for more details. | ||
# | ||
# You should have received a copy of the GNU General Public License | ||
# along with this program; if not, write to the Free Software | ||
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
import re | ||
import socket | ||
import errcode | ||
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||
HOST = 'irc.freenode.net' | ||
PORT = 6667 | ||
NICK = 'gpxebot' | ||
CHAN = '#etherboot' | ||
NICKSERV_PASSWORD = None | ||
IDENT = 'gpxebot' | ||
REALNAME = 'gPXE bot' | ||
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ERRCODE_RE = re.compile(r'(errcode|Error)\s+((0x)?[0-9a-fA-F]{8})') | ||
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NO_ARGS = -1 | ||
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handlers = {} | ||
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def nick_from_mask(mask): | ||
return (mask.find('!') > -1 and mask.split('!', 1)[0]) or mask | ||
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def autojoin(): | ||
del handlers['376'] | ||
if NICKSERV_PASSWORD: | ||
pmsg('nickserv', 'identify %s' % NICKSERV_PASSWORD) | ||
if CHAN: | ||
cmd('JOIN %s' % CHAN) | ||
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def ping(_, arg): | ||
cmd('PONG %s' % arg) | ||
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def privmsg(_, target, msg): | ||
if target == CHAN: | ||
replyto = target | ||
if msg.find(NICK) == -1: | ||
return | ||
elif target == NICK: | ||
replyto = nick_from_mask(who) | ||
m = ERRCODE_RE.search(msg) | ||
if m: | ||
try: | ||
pmsg(replyto, str(errcode.Errcode(int(m.groups()[1], 16)))) | ||
except ValueError: | ||
pass | ||
if msg.find('help') > -1: | ||
pmsg(replyto, 'I look up gPXE error codes. Message me like this:') | ||
pmsg(replyto, 'errcode 0x12345678 OR Error 0x12345678') | ||
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def add_handler(command, handler, nargs): | ||
handlers[command] = (handler, nargs) | ||
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def cmd(msg): | ||
sock.sendall('%s\r\n' % msg) | ||
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def pmsg(target, msg): | ||
cmd('PRIVMSG %s :%s' % (target, msg)) | ||
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def dispatch(args): | ||
command = args[0] | ||
if command in handlers: | ||
h = handlers[command] | ||
if h[1] == NO_ARGS: | ||
h[0]() | ||
elif len(args) == h[1]: | ||
h[0](*args) | ||
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def parse(line): | ||
if line[0] == ':': | ||
who, line = line.split(None, 1) | ||
who = who[1:] | ||
else: | ||
who = None | ||
args = [] | ||
while line and line[0] != ':' and line.find(' ') != -1: | ||
arg, line = line.split(None, 1) | ||
args.append(arg) | ||
if line: | ||
if line[0] == ':': | ||
args.append(line[1:]) | ||
else: | ||
args.append(line) | ||
return who, args | ||
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add_handler('376', autojoin, NO_ARGS) | ||
add_handler('PING', ping, 2) | ||
add_handler('PRIVMSG', privmsg, 3) | ||
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sock = socket.socket() | ||
sock.connect((HOST, PORT)) | ||
cmd('NICK %s' % NICK) | ||
cmd('USER %s none none :%s' % (IDENT, REALNAME)) | ||
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rbuf = '' | ||
while True: | ||
r = sock.recv(4096) | ||
if not r: | ||
break | ||
rbuf += r | ||
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while rbuf.find('\r\n') != -1: | ||
line, rbuf = rbuf.split('\r\n', 1) | ||
if not line: | ||
continue | ||
who, args = parse(line) | ||
dispatch(args) |