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#
# firewall.py - firewall install data and installation
#
# Bill Nottingham <notting@redhat.com>
#
# Copyright 2003 Red Hat, Inc.
#
# This software may be freely redistributed under the terms of the GNU
# library public license.
#
# You should have received a copy of the GNU Library Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
import os
import iutil
import string
from flags import flags
from rhpl.log import log
class Firewall:
def __init__ (self):
self.enabled = -1
self.ssh = 0
self.telnet = 0
self.smtp = 0
self.http = 0
self.ftp = 0
self.portlist = ""
self.ports = []
self.policy = 1
self.dhcp = 0
self.trustdevs = []
self.custom = 1
def writeKS(self, f):
f.write("firewall")
if self.enabled > 0:
for arg in self.getArgList():
f.write(" " + arg)
else:
f.write(" --disabled")
f.write("\n")
def getArgList(self):
args = []
if self.policy:
args.append ("--medium")
else:
args.append ("--high")
if self.dhcp:
args.append ("--dhcp")
if self.portlist:
ports = string.split(self.portlist,',')
for port in ports:
port = string.strip(port)
try:
if not string.index(port,':'):
port = '%s:tcp' % port
except:
pass
self.ports.append(port)
for port in self.ports:
args = args + [ "--port", port ]
if self.smtp:
args = args + [ "--port","smtp:tcp" ]
if self.http:
args = args + [ "--port","http:tcp" ]
if self.ftp:
args = args + [ "--port","ftp:tcp" ]
if self.ssh:
args = args + [ "--port","ssh:tcp" ]
if self.telnet:
args = args + [ "--port","telnet:tcp" ]
for dev in self.trustdevs:
args = args + [ "--trust", dev ]
return args
def write (self, instPath):
args = [ "/usr/sbin/lokkit", "--quiet", "--nostart" ]
if self.enabled > 0:
args = args + self.getArgList()
try:
if flags.setupFilesystems:
iutil.execWithRedirect(args[0], args, root = instPath,
stdout = None, stderr = None)
else:
log("would have run %s", args)
except RuntimeError, msg:
log ("lokkit run failed: %s", msg)
except OSError, (errno, msg):
log ("lokkit run failed: %s", msg)
else:
f = open(instPath +
'/etc/sysconfig/redhat-config-securitylevel', 'w')
f.write("# redhat-config-securitylevel config written out by anaconda\n\n")
for arg in args[3:]:
f.write("%s\n" %(arg,))
f.close()
else:
# remove /etc/sysconfig/ipchains
file = instPath + "/etc/sysconfig/ipchains"
if os.access(file, os.O_RDONLY):
os.remove(file)
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