[xchat IRC plugin] QuakeNet Q challenge-response auth

# to autoload, put into the xchat directory, for example as ~/.xchat2/qauth.py
# commands:
#  /QAUTH <password> auth to Q via challenge-response on QuakeNet
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation
#
# have fun !

[code]
__module_name__ = "qauth"
__module_version__ = "0.1"
__module_description__ = "Q challenge-response authentication"

import xchat
from md5 import md5

pw = ''

def qauth_cb(word, word_eol, udata):
    if len(word) < 2:
        print 'You must give a password.'
    elif 'quakenet' not in xchat.get_info('server').lower():
        print 'You do not seam to be on QuakeNet.'
    else:
        global pw
        pw = word[1]
        xchat.command('MSG Q@CServe.quakenet.org CHALLENGE')
    return xchat.EAT_ALL

def notice_cb(word, word_eol, udata):
    if word[0] == ':Q!TheQBot@CServe.quakenet.org' and word[3] == ":CHALLENGE":
        if word[4] != "MD5":
            print "Q wants me to use the unknown hashing algorithm %s."
            print "You may want to update qauth.py."
        else:
            global pw
            xchat.command('MSG Q@CServe.quakenet.org CHALLENGEAUTH %s %s'
                % (word[2], md5(pw+' '+word[5]).hexdigest()))
            pw = ''


xchat.hook_command('QAUTH', qauth_cb,
    help='/QAUTH <passwd> auth to Q via challenge-response on QuakeNet')
xchat.hook_server('NOTICE', notice_cb)