#!/usr/bin/python -t

import os
import string
import socket
import syslog
import re

def getKickstartDesignation(listfile, hostname):
    file = open(listfile, 'r')
    contents = file.read()
    ##
    # Remove all comments, strip spaces and remove resulting blank lines,
    # and strip the trailing newline, if any.
    #
    contents = re.sub(re.compile('^#.*\n', re.M), '', contents)
    contents = re.sub('[ \t]*', '', contents)
    contents = re.sub(re.compile('^\n', re.M), '', contents)
    contents = re.sub('\n$', '', contents)
    #
    # Split lines into a dictionary
    entries = string.split(contents, '\n')
    #
    # Iterate through entries and return the first match, if any.
    # Remember _default_ if we run across it.
    defaultks = ''
    for entry in entries:
        (hostregex, kscfg) = string.split(entry, '=')
        if hostregex == '_default_':
            defaultks = kscfg
        elif re.compile('^' + hostregex).match(hostname):
            return (kscfg, hostregex)    
    return (defaultks, 'none, default used')

ipaddr = os.environ['REMOTE_ADDR']
(remotehost, aliases, ip) = socket.gethostbyaddr(ipaddr)
(ksdes, matchregex) = getKickstartDesignation('ks.list', remotehost)
pathtoks = '/srv/install/linux/ks/'
kscfg = '%s/%s' % (pathtoks, ksdes)
file = open(kscfg, 'r')

sysmsg = 'Kickstarting %s with install type %s' % (remotehost, ksdes)
syslog.openlog('kscgi')
syslog.syslog(syslog.LOG_NOTICE, sysmsg)
syslog.closelog()

print "Content-type: text/plain"
print
print "#         System: %s" % remotehost
print "# Kickstart type: %s" % ksdes
print "# Matching entry: %s" % matchregex
print "#"
print file.read()