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"""
Classes for validating whether asystem is configured for network booting
Michael DeHaan <mdehaan@redhat.com>
"""
import os
import sys
import re
import config
from msg import *
class BootCheck:
def __init__(self,config):
self.config = config
self.settings = config.settings()
def run(self):
"""
Returns None if there are no errors, otherwise returns a list
of things to correct prior to running application 'for real'.
(The CLI usage is "cobbler check" before "cobbler sync")
"""
status = []
self.check_name(status)
self.check_dhcpd_bin(status)
self.check_pxelinux_bin(status)
self.check_tftpd_bin(status)
self.check_tftpd_dir(status)
self.check_tftpd_conf(status)
self.check_dhcpd_conf(status)
self.check_httpd(status)
return status
def check_name(self,status):
if self.settings.server == "localhost":
status.append(m("bad_server"))
def check_httpd(self,status):
if not os.path.exists(self.settings.httpd_bin):
status.append(m("no_httpd"))
def check_dhcpd_bin(self,status):
"""
Check if dhcpd is installed
"""
if not os.path.exists(self.settings.dhcpd_bin):
status.append(m("no_dhcpd"))
def check_pxelinux_bin(self,status):
"""
Check if pxelinux (part of syslinux) is installed
"""
if not os.path.exists(self.settings.pxelinux):
status.append(m("no_pxelinux"))
def check_tftpd_bin(self,status):
"""
Check if tftpd is installed
"""
if not os.path.exists(self.settings.tftpd_bin):
status.append(m("no_tftpd"))
def check_tftpd_dir(self,status):
"""
Check if cobbler.conf's tftpboot directory exists
"""
if not os.path.exists(self.settings.tftpboot):
status.append(m("no_dir") % self.settings.tftpboot)
def check_tftpd_conf(self,status):
"""
Check that configured tftpd boot directory matches with actual
Check that tftpd is enabled to autostart
"""
if os.path.exists(self.settings.tftpd_conf):
f = open(self.settings.tftpd_conf)
re_1 = re.compile(r'default:.*off')
re_2 = re.compile(r'disable.*=.*yes')
found_bootdir = False
for line in f.readlines():
if re_1.search(line):
status.append(m("chg_attrib") % ('default','on',self.settings.tftpd_conf))
if re_2.search(line):
status.append(m("chg_attrib") % ('disable','no',self.settings.tftpd_conf))
if line.find("-s %s" % self.settings.tftpboot) != -1:
found_bootdir = True
if not found_bootdir:
status.append(m("chg_attrib") % ('server_args',"-s %s" % self.settings.tftpboot, self.settings.tftpd_conf))
else:
status.append(m("no_exist") % self.settings.tftpd_conf)
def check_dhcpd_conf(self,status):
"""
Check that dhcpd *appears* to be configured for pxe booting.
We can't assure file correctness
"""
if os.path.exists(self.settings.dhcpd_conf):
match_next = False
match_file = False
f = open(self.settings.dhcpd_conf)
for line in f.readlines():
if line.find("next-server") != -1:
match_next = True
if line.find("filename") != -1:
match_file = True
if not match_next:
status.append(m("no_line") % (self.settings.dhcpd_conf, 'next-server ip-address'))
if not match_file:
status.append(m("no_line") % (self.settings.dhcpd_conf, 'filename "%s/pxelinux.0";' % self.settings.tftpboot))
else:
status.append(m("no_exist") % self.settings.dhcpd_conf)
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